Mercurial > hg
annotate contrib/python-zstandard/c-ext/decompressor.c @ 37139:aa55c5354b8f
alias: reject non-ascii characters in user help/doc strings
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ASCII. Otherwise, UnicodeError would be raised.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Wed, 28 Mar 2018 22:04:45 +0900 |
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1 /** |
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2 * Copyright (c) 2016-present, Gregory Szorc |
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3 * All rights reserved. |
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4 * |
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5 * This software may be modified and distributed under the terms |
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6 * of the BSD license. See the LICENSE file for details. |
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7 */ |
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8 |
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9 #include "python-zstandard.h" |
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10 #include "pool.h" |
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11 |
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12 extern PyObject* ZstdError; |
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13 |
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14 /** |
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15 * Ensure the ZSTD_DStream on a ZstdDecompressor is initialized and reset. |
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16 * |
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17 * This should be called before starting a decompression operation with a |
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18 * ZSTD_DStream on a ZstdDecompressor. |
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19 */ |
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20 int init_dstream(ZstdDecompressor* decompressor) { |
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21 void* dictData = NULL; |
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22 size_t dictSize = 0; |
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23 size_t zresult; |
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24 |
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25 /* Simple case of dstream already exists. Just reset it. */ |
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26 if (decompressor->dstream) { |
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27 zresult = ZSTD_resetDStream(decompressor->dstream); |
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28 if (ZSTD_isError(zresult)) { |
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29 PyErr_Format(ZstdError, "could not reset DStream: %s", |
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30 ZSTD_getErrorName(zresult)); |
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31 return -1; |
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32 } |
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33 |
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34 return 0; |
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35 } |
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36 |
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37 decompressor->dstream = ZSTD_createDStream(); |
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38 if (!decompressor->dstream) { |
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39 PyErr_SetString(ZstdError, "could not create DStream"); |
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40 return -1; |
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41 } |
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42 |
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43 if (decompressor->dict) { |
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44 dictData = decompressor->dict->dictData; |
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45 dictSize = decompressor->dict->dictSize; |
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46 } |
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47 |
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48 if (dictData) { |
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49 zresult = ZSTD_initDStream_usingDict(decompressor->dstream, dictData, dictSize); |
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50 } |
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51 else { |
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52 zresult = ZSTD_initDStream(decompressor->dstream); |
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53 } |
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54 |
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55 if (ZSTD_isError(zresult)) { |
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56 /* Don't leave a reference to an invalid object. */ |
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57 ZSTD_freeDStream(decompressor->dstream); |
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58 decompressor->dstream = NULL; |
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59 |
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60 PyErr_Format(ZstdError, "could not initialize DStream: %s", |
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61 ZSTD_getErrorName(zresult)); |
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62 return -1; |
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63 } |
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64 |
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65 return 0; |
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66 } |
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67 |
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68 PyDoc_STRVAR(Decompressor__doc__, |
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69 "ZstdDecompressor(dict_data=None)\n" |
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70 "\n" |
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71 "Create an object used to perform Zstandard decompression.\n" |
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72 "\n" |
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73 "An instance can perform multiple decompression operations." |
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74 ); |
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75 |
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76 static int Decompressor_init(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
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77 static char* kwlist[] = { |
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78 "dict_data", |
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79 NULL |
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80 }; |
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81 |
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82 ZstdCompressionDict* dict = NULL; |
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83 |
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84 self->dctx = NULL; |
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85 self->dict = NULL; |
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86 self->ddict = NULL; |
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87 |
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88 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|O!:ZstdDecompressor", kwlist, |
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89 &ZstdCompressionDictType, &dict)) { |
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90 return -1; |
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91 } |
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92 |
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93 /* TODO lazily initialize the reference ZSTD_DCtx on first use since |
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94 not instances of ZstdDecompressor will use a ZSTD_DCtx. */ |
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95 self->dctx = ZSTD_createDCtx(); |
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96 if (!self->dctx) { |
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97 PyErr_NoMemory(); |
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98 goto except; |
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99 } |
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100 |
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101 if (dict) { |
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102 self->dict = dict; |
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103 Py_INCREF(dict); |
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104 } |
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105 |
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106 return 0; |
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107 |
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108 except: |
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109 if (self->dctx) { |
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110 ZSTD_freeDCtx(self->dctx); |
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111 self->dctx = NULL; |
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112 } |
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113 |
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114 return -1; |
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115 } |
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116 |
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117 static void Decompressor_dealloc(ZstdDecompressor* self) { |
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118 Py_CLEAR(self->dict); |
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|
119 |
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Gregory Szorc <gregory.szorc@gmail.com>
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120 if (self->ddict) { |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
121 ZSTD_freeDDict(self->ddict); |
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122 self->ddict = NULL; |
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parents:
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|
123 } |
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parents:
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|
124 |
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125 if (self->dstream) { |
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|
126 ZSTD_freeDStream(self->dstream); |
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|
127 self->dstream = NULL; |
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|
128 } |
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129 |
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|
130 if (self->dctx) { |
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|
131 ZSTD_freeDCtx(self->dctx); |
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132 self->dctx = NULL; |
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|
133 } |
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|
134 |
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|
135 PyObject_Del(self); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
136 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
137 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
138 PyDoc_STRVAR(Decompressor_copy_stream__doc__, |
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Gregory Szorc <gregory.szorc@gmail.com>
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139 "copy_stream(ifh, ofh[, read_size=default, write_size=default]) -- decompress data between streams\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
140 "\n" |
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parents:
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|
141 "Compressed data will be read from ``ifh``, decompressed, and written to\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
142 "``ofh``. ``ifh`` must have a ``read(size)`` method. ``ofh`` must have a\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
143 "``write(data)`` method.\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
144 "\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
145 "The optional ``read_size`` and ``write_size`` arguments control the chunk\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
146 "size of data that is ``read()`` and ``write()`` between streams. They default\n" |
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|
147 "to the default input and output sizes of zstd decompressor streams.\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
148 ); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
149 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
150 static PyObject* Decompressor_copy_stream(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
151 static char* kwlist[] = { |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
152 "ifh", |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
153 "ofh", |
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|
154 "read_size", |
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|
155 "write_size", |
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parents:
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|
156 NULL |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
157 }; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
158 |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
159 PyObject* source; |
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|
160 PyObject* dest; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
161 size_t inSize = ZSTD_DStreamInSize(); |
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|
162 size_t outSize = ZSTD_DStreamOutSize(); |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
163 ZSTD_inBuffer input; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
164 ZSTD_outBuffer output; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
165 Py_ssize_t totalRead = 0; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
166 Py_ssize_t totalWrite = 0; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
167 char* readBuffer; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
168 Py_ssize_t readSize; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
169 PyObject* readResult; |
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|
170 PyObject* res = NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
171 size_t zresult = 0; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
172 PyObject* writeResult; |
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Gregory Szorc <gregory.szorc@gmail.com>
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|
173 PyObject* totalReadPy; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
174 PyObject* totalWritePy; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
175 |
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Gregory Szorc <gregory.szorc@gmail.com>
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30830
diff
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|
176 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|kk:copy_stream", kwlist, |
c32454d69b85
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Gregory Szorc <gregory.szorc@gmail.com>
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|
177 &source, &dest, &inSize, &outSize)) { |
30435
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|
178 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
179 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
180 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
181 if (!PyObject_HasAttrString(source, "read")) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
182 PyErr_SetString(PyExc_ValueError, "first argument must have a read() method"); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
183 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
184 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
185 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
186 if (!PyObject_HasAttrString(dest, "write")) { |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
187 PyErr_SetString(PyExc_ValueError, "second argument must have a write() method"); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
188 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
189 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
190 |
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zstd: prevent potential free() of uninitialized memory
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
191 /* Prevent free on uninitialized memory in finally. */ |
08fa3a76a080
zstd: prevent potential free() of uninitialized memory
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30435
diff
changeset
|
192 output.dst = NULL; |
08fa3a76a080
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Gregory Szorc <gregory.szorc@gmail.com>
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diff
changeset
|
193 |
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diff
changeset
|
194 if (0 != init_dstream(self)) { |
30435
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Gregory Szorc <gregory.szorc@gmail.com>
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|
195 res = NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
196 goto finally; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
197 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
198 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
199 output.dst = PyMem_Malloc(outSize); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
200 if (!output.dst) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
201 PyErr_NoMemory(); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
202 res = NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
203 goto finally; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
204 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
205 output.size = outSize; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
206 output.pos = 0; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
207 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
208 /* Read source stream until EOF */ |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
209 while (1) { |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
210 readResult = PyObject_CallMethod(source, "read", "n", inSize); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
211 if (!readResult) { |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
212 PyErr_SetString(ZstdError, "could not read() from source"); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
213 goto finally; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
214 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
215 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
216 PyBytes_AsStringAndSize(readResult, &readBuffer, &readSize); |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
217 |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
218 /* If no data was read, we're at EOF. */ |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
219 if (0 == readSize) { |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
220 break; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
221 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
222 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
223 totalRead += readSize; |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
224 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
225 /* Send data to decompressor */ |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
226 input.src = readBuffer; |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
227 input.size = readSize; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
228 input.pos = 0; |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
229 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
230 while (input.pos < input.size) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
231 Py_BEGIN_ALLOW_THREADS |
31796
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zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
232 zresult = ZSTD_decompressStream(self->dstream, &output, &input); |
30435
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
233 Py_END_ALLOW_THREADS |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
234 |
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
235 if (ZSTD_isError(zresult)) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
236 PyErr_Format(ZstdError, "zstd decompressor error: %s", |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
237 ZSTD_getErrorName(zresult)); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
238 res = NULL; |
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239 goto finally; |
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240 } |
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241 |
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242 if (output.pos) { |
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243 #if PY_MAJOR_VERSION >= 3 |
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244 writeResult = PyObject_CallMethod(dest, "write", "y#", |
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245 #else |
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246 writeResult = PyObject_CallMethod(dest, "write", "s#", |
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247 #endif |
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248 output.dst, output.pos); |
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249 |
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250 Py_XDECREF(writeResult); |
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251 totalWrite += output.pos; |
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252 output.pos = 0; |
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253 } |
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254 } |
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255 } |
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256 |
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257 /* Source stream is exhausted. Finish up. */ |
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258 |
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259 totalReadPy = PyLong_FromSsize_t(totalRead); |
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260 totalWritePy = PyLong_FromSsize_t(totalWrite); |
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261 res = PyTuple_Pack(2, totalReadPy, totalWritePy); |
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262 Py_DECREF(totalReadPy); |
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263 Py_DECREF(totalWritePy); |
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264 |
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265 finally: |
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266 if (output.dst) { |
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267 PyMem_Free(output.dst); |
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268 } |
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269 |
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270 return res; |
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271 } |
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272 |
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273 PyDoc_STRVAR(Decompressor_decompress__doc__, |
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274 "decompress(data[, max_output_size=None]) -- Decompress data in its entirety\n" |
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275 "\n" |
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276 "This method will decompress the entirety of the argument and return the\n" |
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277 "result.\n" |
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278 "\n" |
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279 "The input bytes are expected to contain a full Zstandard frame (something\n" |
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280 "compressed with ``ZstdCompressor.compress()`` or similar). If the input does\n" |
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281 "not contain a full frame, an exception will be raised.\n" |
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282 "\n" |
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283 "If the frame header of the compressed data does not contain the content size\n" |
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284 "``max_output_size`` must be specified or ``ZstdError`` will be raised. An\n" |
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285 "allocation of size ``max_output_size`` will be performed and an attempt will\n" |
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286 "be made to perform decompression into that buffer. If the buffer is too\n" |
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287 "small or cannot be allocated, ``ZstdError`` will be raised. The buffer will\n" |
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288 "be resized if it is too large.\n" |
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289 "\n" |
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290 "Uncompressed data could be much larger than compressed data. As a result,\n" |
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291 "calling this function could result in a very large memory allocation being\n" |
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292 "performed to hold the uncompressed data. Therefore it is **highly**\n" |
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293 "recommended to use a streaming decompression method instead of this one.\n" |
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294 ); |
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295 |
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296 PyObject* Decompressor_decompress(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
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297 static char* kwlist[] = { |
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298 "data", |
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299 "max_output_size", |
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|
300 NULL |
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|
301 }; |
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|
302 |
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|
303 const char* source; |
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|
304 Py_ssize_t sourceSize; |
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|
305 Py_ssize_t maxOutputSize = 0; |
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|
306 unsigned long long decompressedSize; |
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|
307 size_t destCapacity; |
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|
308 PyObject* result = NULL; |
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|
309 void* dictData = NULL; |
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|
310 size_t dictSize = 0; |
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|
311 size_t zresult; |
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|
312 |
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parents:
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|
313 #if PY_MAJOR_VERSION >= 3 |
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314 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y#|n:decompress", |
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|
315 #else |
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316 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#|n:decompress", |
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|
317 #endif |
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|
318 kwlist, &source, &sourceSize, &maxOutputSize)) { |
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|
319 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
320 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
321 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
322 if (self->dict) { |
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|
323 dictData = self->dict->dictData; |
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|
324 dictSize = self->dict->dictSize; |
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parents:
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|
325 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
326 |
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parents:
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|
327 if (dictData && !self->ddict) { |
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parents:
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|
328 Py_BEGIN_ALLOW_THREADS |
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329 self->ddict = ZSTD_createDDict_byReference(dictData, dictSize); |
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|
330 Py_END_ALLOW_THREADS |
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|
331 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
332 if (!self->ddict) { |
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parents:
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|
333 PyErr_SetString(ZstdError, "could not create decompression dict"); |
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|
334 return NULL; |
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|
335 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
336 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
337 |
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|
338 decompressedSize = ZSTD_getDecompressedSize(source, sourceSize); |
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|
339 /* 0 returned if content size not in the zstd frame header */ |
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|
340 if (0 == decompressedSize) { |
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parents:
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|
341 if (0 == maxOutputSize) { |
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parents:
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|
342 PyErr_SetString(ZstdError, "input data invalid or missing content size " |
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parents:
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|
343 "in frame header"); |
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344 return NULL; |
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|
345 } |
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parents:
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|
346 else { |
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parents:
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|
347 result = PyBytes_FromStringAndSize(NULL, maxOutputSize); |
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|
348 destCapacity = maxOutputSize; |
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|
349 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
350 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
351 else { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
352 result = PyBytes_FromStringAndSize(NULL, decompressedSize); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
353 destCapacity = decompressedSize; |
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parents:
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|
354 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
355 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
356 if (!result) { |
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357 return NULL; |
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|
358 } |
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parents:
diff
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|
359 |
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parents:
diff
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|
360 Py_BEGIN_ALLOW_THREADS |
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parents:
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|
361 if (self->ddict) { |
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|
362 zresult = ZSTD_decompress_usingDDict(self->dctx, |
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parents:
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|
363 PyBytes_AsString(result), destCapacity, |
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parents:
diff
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|
364 source, sourceSize, self->ddict); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
365 } |
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parents:
diff
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|
366 else { |
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367 zresult = ZSTD_decompressDCtx(self->dctx, |
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|
368 PyBytes_AsString(result), destCapacity, source, sourceSize); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
369 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
370 Py_END_ALLOW_THREADS |
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parents:
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|
371 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
372 if (ZSTD_isError(zresult)) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
373 PyErr_Format(ZstdError, "decompression error: %s", ZSTD_getErrorName(zresult)); |
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parents:
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|
374 Py_DECREF(result); |
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|
375 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
376 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
377 else if (decompressedSize && zresult != decompressedSize) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
378 PyErr_Format(ZstdError, "decompression error: decompressed %zu bytes; expected %llu", |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
379 zresult, decompressedSize); |
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parents:
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|
380 Py_DECREF(result); |
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parents:
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|
381 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
382 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
383 else if (zresult < destCapacity) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
384 if (_PyBytes_Resize(&result, zresult)) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
385 Py_DECREF(result); |
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parents:
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|
386 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
387 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
388 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
389 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
390 return result; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
391 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
392 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
393 PyDoc_STRVAR(Decompressor_decompressobj__doc__, |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
394 "decompressobj()\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
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|
395 "\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
396 "Incrementally feed data into a decompressor.\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
397 "\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
398 "The returned object exposes a ``decompress(data)`` method. This makes it\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
399 "compatible with ``zlib.decompressobj`` and ``bz2.BZ2Decompressor`` so that\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
400 "callers can swap in the zstd decompressor while using the same API.\n" |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
401 ); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
402 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
403 static ZstdDecompressionObj* Decompressor_decompressobj(ZstdDecompressor* self) { |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
404 ZstdDecompressionObj* result = (ZstdDecompressionObj*)PyObject_CallObject((PyObject*)&ZstdDecompressionObjType, NULL); |
30435
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
405 if (!result) { |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
406 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
407 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
408 |
31796
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
409 if (0 != init_dstream(self)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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changeset
|
410 Py_DECREF(result); |
30435
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parents:
diff
changeset
|
411 return NULL; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
412 } |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
413 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
414 result->decompressor = self; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
415 Py_INCREF(result->decompressor); |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
416 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
417 return result; |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
418 } |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
419 |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
420 PyDoc_STRVAR(Decompressor_read_from__doc__, |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
421 "read_from(reader[, read_size=default, write_size=default, skip_bytes=0])\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
422 "Read compressed data and return an iterator\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
423 "\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
424 "Returns an iterator of decompressed data chunks produced from reading from\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
425 "the ``reader``.\n" |
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
426 "\n" |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
427 "Compressed data will be obtained from ``reader`` by calling the\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
428 "``read(size)`` method of it. The source data will be streamed into a\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
429 "decompressor. As decompressed data is available, it will be exposed to the\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
430 "returned iterator.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
431 "\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
432 "Data is ``read()`` in chunks of size ``read_size`` and exposed to the\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
433 "iterator in chunks of size ``write_size``. The default values are the input\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
434 "and output sizes for a zstd streaming decompressor.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
435 "\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
436 "There is also support for skipping the first ``skip_bytes`` of data from\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
437 "the source.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
438 ); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
439 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
440 static ZstdDecompressorIterator* Decompressor_read_from(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
441 static char* kwlist[] = { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
442 "reader", |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
443 "read_size", |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
444 "write_size", |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
445 "skip_bytes", |
b86a448a2965
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
446 NULL |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
447 }; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
448 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
449 PyObject* reader; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
450 size_t inSize = ZSTD_DStreamInSize(); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
451 size_t outSize = ZSTD_DStreamOutSize(); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
452 ZstdDecompressorIterator* result; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
453 size_t skipBytes = 0; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
454 |
30895
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
455 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|kkk:read_from", kwlist, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
456 &reader, &inSize, &outSize, &skipBytes)) { |
30435
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zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
457 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
458 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
459 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
460 if (skipBytes >= inSize) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
461 PyErr_SetString(PyExc_ValueError, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
462 "skip_bytes must be smaller than read_size"); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
463 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
464 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
465 |
31796
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zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
466 result = (ZstdDecompressorIterator*)PyObject_CallObject((PyObject*)&ZstdDecompressorIteratorType, NULL); |
30435
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
467 if (!result) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
468 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
469 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
470 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
471 if (PyObject_HasAttrString(reader, "read")) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
472 result->reader = reader; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
473 Py_INCREF(result->reader); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
474 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
475 else if (1 == PyObject_CheckBuffer(reader)) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
476 /* Object claims it is a buffer. Try to get a handle to it. */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
477 result->buffer = PyMem_Malloc(sizeof(Py_buffer)); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
478 if (!result->buffer) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
479 goto except; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
480 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
481 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
482 memset(result->buffer, 0, sizeof(Py_buffer)); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
483 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
484 if (0 != PyObject_GetBuffer(reader, result->buffer, PyBUF_CONTIG_RO)) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
485 goto except; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
486 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
487 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
488 else { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
489 PyErr_SetString(PyExc_ValueError, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
490 "must pass an object with a read() method or conforms to buffer protocol"); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
491 goto except; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
492 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
493 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
494 result->decompressor = self; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
495 Py_INCREF(result->decompressor); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
496 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
497 result->inSize = inSize; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
498 result->outSize = outSize; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
499 result->skipBytes = skipBytes; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
500 |
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
501 if (0 != init_dstream(self)) { |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
502 goto except; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
503 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
504 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
505 result->input.src = PyMem_Malloc(inSize); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
506 if (!result->input.src) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
507 PyErr_NoMemory(); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
508 goto except; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
509 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
510 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
511 goto finally; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
512 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
513 except: |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
514 Py_CLEAR(result->reader); |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
515 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
516 if (result->buffer) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
517 PyBuffer_Release(result->buffer); |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
518 Py_CLEAR(result->buffer); |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
519 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
520 |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
521 Py_CLEAR(result); |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
522 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
523 finally: |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
524 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
525 return result; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
526 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
527 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
528 PyDoc_STRVAR(Decompressor_write_to__doc__, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
529 "Create a context manager to write decompressed data to an object.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
530 "\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
531 "The passed object must have a ``write()`` method.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
532 "\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
533 "The caller feeds intput data to the object by calling ``write(data)``.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
534 "Decompressed data is written to the argument given as it is decompressed.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
535 "\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
536 "An optional ``write_size`` argument defines the size of chunks to\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
537 "``write()`` to the writer. It defaults to the default output size for a zstd\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
538 "streaming decompressor.\n" |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
539 ); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
540 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
541 static ZstdDecompressionWriter* Decompressor_write_to(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
542 static char* kwlist[] = { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
543 "writer", |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
544 "write_size", |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
545 NULL |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
546 }; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
547 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
548 PyObject* writer; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
549 size_t outSize = ZSTD_DStreamOutSize(); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
550 ZstdDecompressionWriter* result; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
551 |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
552 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|k:write_to", kwlist, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
553 &writer, &outSize)) { |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
554 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
555 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
556 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
557 if (!PyObject_HasAttrString(writer, "write")) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
558 PyErr_SetString(PyExc_ValueError, "must pass an object with a write() method"); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
559 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
560 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
561 |
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
562 result = (ZstdDecompressionWriter*)PyObject_CallObject((PyObject*)&ZstdDecompressionWriterType, NULL); |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
563 if (!result) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
564 return NULL; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
565 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
566 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
567 result->decompressor = self; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
568 Py_INCREF(result->decompressor); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
569 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
570 result->writer = writer; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
571 Py_INCREF(result->writer); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
572 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
573 result->outSize = outSize; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
574 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
575 return result; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
576 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
577 |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
578 PyDoc_STRVAR(Decompressor_decompress_content_dict_chain__doc__, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
579 "Decompress a series of chunks using the content dictionary chaining technique\n" |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
580 ); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
581 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
582 static PyObject* Decompressor_decompress_content_dict_chain(PyObject* self, PyObject* args, PyObject* kwargs) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
583 static char* kwlist[] = { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
584 "frames", |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
585 NULL |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
586 }; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
587 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
588 PyObject* chunks; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
589 Py_ssize_t chunksLen; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
590 Py_ssize_t chunkIndex; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
591 char parity = 0; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
592 PyObject* chunk; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
593 char* chunkData; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
594 Py_ssize_t chunkSize; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
595 ZSTD_DCtx* dctx = NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
596 size_t zresult; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
597 ZSTD_frameParams frameParams; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
598 void* buffer1 = NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
599 size_t buffer1Size = 0; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
600 size_t buffer1ContentSize = 0; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
601 void* buffer2 = NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
602 size_t buffer2Size = 0; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
603 size_t buffer2ContentSize = 0; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
604 void* destBuffer = NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
605 PyObject* result = NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
606 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
607 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!:decompress_content_dict_chain", |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
608 kwlist, &PyList_Type, &chunks)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
609 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
610 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
611 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
612 chunksLen = PyList_Size(chunks); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
613 if (!chunksLen) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
614 PyErr_SetString(PyExc_ValueError, "empty input chain"); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
615 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
616 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
617 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
618 /* The first chunk should not be using a dictionary. We handle it specially. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
619 chunk = PyList_GetItem(chunks, 0); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
620 if (!PyBytes_Check(chunk)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
621 PyErr_SetString(PyExc_ValueError, "chunk 0 must be bytes"); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
622 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
623 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
624 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
625 /* We require that all chunks be zstd frames and that they have content size set. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
626 PyBytes_AsStringAndSize(chunk, &chunkData, &chunkSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
627 zresult = ZSTD_getFrameParams(&frameParams, (void*)chunkData, chunkSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
628 if (ZSTD_isError(zresult)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
629 PyErr_SetString(PyExc_ValueError, "chunk 0 is not a valid zstd frame"); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
630 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
631 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
632 else if (zresult) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
633 PyErr_SetString(PyExc_ValueError, "chunk 0 is too small to contain a zstd frame"); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
634 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
635 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
636 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
637 if (0 == frameParams.frameContentSize) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
638 PyErr_SetString(PyExc_ValueError, "chunk 0 missing content size in frame"); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
639 return NULL; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
640 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
641 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
642 dctx = ZSTD_createDCtx(); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
643 if (!dctx) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
644 PyErr_NoMemory(); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
645 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
646 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
647 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
648 buffer1Size = frameParams.frameContentSize; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
649 buffer1 = PyMem_Malloc(buffer1Size); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
650 if (!buffer1) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
651 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
652 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
653 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
654 Py_BEGIN_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
655 zresult = ZSTD_decompressDCtx(dctx, buffer1, buffer1Size, chunkData, chunkSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
656 Py_END_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
657 if (ZSTD_isError(zresult)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
658 PyErr_Format(ZstdError, "could not decompress chunk 0: %s", ZSTD_getErrorName(zresult)); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
659 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
660 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
661 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
662 buffer1ContentSize = zresult; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
663 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
664 /* Special case of a simple chain. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
665 if (1 == chunksLen) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
666 result = PyBytes_FromStringAndSize(buffer1, buffer1Size); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
667 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
668 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
669 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
670 /* This should ideally look at next chunk. But this is slightly simpler. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
671 buffer2Size = frameParams.frameContentSize; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
672 buffer2 = PyMem_Malloc(buffer2Size); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
673 if (!buffer2) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
674 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
675 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
676 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
677 /* For each subsequent chunk, use the previous fulltext as a content dictionary. |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
678 Our strategy is to have 2 buffers. One holds the previous fulltext (to be |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
679 used as a content dictionary) and the other holds the new fulltext. The |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
680 buffers grow when needed but never decrease in size. This limits the |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
681 memory allocator overhead. |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
682 */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
683 for (chunkIndex = 1; chunkIndex < chunksLen; chunkIndex++) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
684 chunk = PyList_GetItem(chunks, chunkIndex); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
685 if (!PyBytes_Check(chunk)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
686 PyErr_Format(PyExc_ValueError, "chunk %zd must be bytes", chunkIndex); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
687 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
688 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
689 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
690 PyBytes_AsStringAndSize(chunk, &chunkData, &chunkSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
691 zresult = ZSTD_getFrameParams(&frameParams, (void*)chunkData, chunkSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
692 if (ZSTD_isError(zresult)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
693 PyErr_Format(PyExc_ValueError, "chunk %zd is not a valid zstd frame", chunkIndex); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
694 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
695 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
696 else if (zresult) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
697 PyErr_Format(PyExc_ValueError, "chunk %zd is too small to contain a zstd frame", chunkIndex); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
698 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
699 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
700 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
701 if (0 == frameParams.frameContentSize) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
702 PyErr_Format(PyExc_ValueError, "chunk %zd missing content size in frame", chunkIndex); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
703 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
704 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
705 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
706 parity = chunkIndex % 2; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
707 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
708 /* This could definitely be abstracted to reduce code duplication. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
709 if (parity) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
710 /* Resize destination buffer to hold larger content. */ |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
711 if (buffer2Size < frameParams.frameContentSize) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
712 buffer2Size = frameParams.frameContentSize; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
713 destBuffer = PyMem_Realloc(buffer2, buffer2Size); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
714 if (!destBuffer) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
715 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
716 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
717 buffer2 = destBuffer; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
718 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
719 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
720 Py_BEGIN_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
721 zresult = ZSTD_decompress_usingDict(dctx, buffer2, buffer2Size, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
722 chunkData, chunkSize, buffer1, buffer1ContentSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
723 Py_END_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
724 if (ZSTD_isError(zresult)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
725 PyErr_Format(ZstdError, "could not decompress chunk %zd: %s", |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
726 chunkIndex, ZSTD_getErrorName(zresult)); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
727 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
728 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
729 buffer2ContentSize = zresult; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
730 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
731 else { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
732 if (buffer1Size < frameParams.frameContentSize) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
733 buffer1Size = frameParams.frameContentSize; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
734 destBuffer = PyMem_Realloc(buffer1, buffer1Size); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
735 if (!destBuffer) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
736 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
737 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
738 buffer1 = destBuffer; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
739 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
740 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
741 Py_BEGIN_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
742 zresult = ZSTD_decompress_usingDict(dctx, buffer1, buffer1Size, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
743 chunkData, chunkSize, buffer2, buffer2ContentSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
744 Py_END_ALLOW_THREADS |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
745 if (ZSTD_isError(zresult)) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
746 PyErr_Format(ZstdError, "could not decompress chunk %zd: %s", |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
747 chunkIndex, ZSTD_getErrorName(zresult)); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
748 goto finally; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
749 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
750 buffer1ContentSize = zresult; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
751 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
752 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
753 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
754 result = PyBytes_FromStringAndSize(parity ? buffer2 : buffer1, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
755 parity ? buffer2ContentSize : buffer1ContentSize); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
756 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
757 finally: |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
758 if (buffer2) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
759 PyMem_Free(buffer2); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
760 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
761 if (buffer1) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
762 PyMem_Free(buffer1); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
763 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
764 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
765 if (dctx) { |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
766 ZSTD_freeDCtx(dctx); |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
767 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
768 |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
769 return result; |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
770 } |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
771 |
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
772 typedef struct { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
773 void* sourceData; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
774 size_t sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
775 unsigned long long destSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
776 } FramePointer; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
777 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
778 typedef struct { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
779 FramePointer* frames; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
780 Py_ssize_t framesSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
781 unsigned long long compressedSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
782 } FrameSources; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
783 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
784 typedef struct { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
785 void* dest; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
786 Py_ssize_t destSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
787 BufferSegment* segments; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
788 Py_ssize_t segmentsSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
789 } DestBuffer; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
790 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
791 typedef enum { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
792 WorkerError_none = 0, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
793 WorkerError_zstd = 1, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
794 WorkerError_memory = 2, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
795 WorkerError_sizeMismatch = 3, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
796 WorkerError_unknownSize = 4, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
797 } WorkerError; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
798 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
799 typedef struct { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
800 /* Source records and length */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
801 FramePointer* framePointers; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
802 /* Which records to process. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
803 Py_ssize_t startOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
804 Py_ssize_t endOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
805 unsigned long long totalSourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
806 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
807 /* Compression state and settings. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
808 ZSTD_DCtx* dctx; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
809 ZSTD_DDict* ddict; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
810 int requireOutputSizes; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
811 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
812 /* Output storage. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
813 DestBuffer* destBuffers; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
814 Py_ssize_t destCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
815 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
816 /* Item that error occurred on. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
817 Py_ssize_t errorOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
818 /* If an error occurred. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
819 WorkerError error; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
820 /* result from zstd decompression operation */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
821 size_t zresult; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
822 } WorkerState; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
823 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
824 static void decompress_worker(WorkerState* state) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
825 size_t allocationSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
826 DestBuffer* destBuffer; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
827 Py_ssize_t frameIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
828 Py_ssize_t localOffset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
829 Py_ssize_t currentBufferStartIndex = state->startOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
830 Py_ssize_t remainingItems = state->endOffset - state->startOffset + 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
831 void* tmpBuf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
832 Py_ssize_t destOffset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
833 FramePointer* framePointers = state->framePointers; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
834 size_t zresult; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
835 unsigned long long totalOutputSize = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
836 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
837 assert(NULL == state->destBuffers); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
838 assert(0 == state->destCount); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
839 assert(state->endOffset - state->startOffset >= 0); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
840 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
841 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
842 * We need to allocate a buffer to hold decompressed data. How we do this |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
843 * depends on what we know about the output. The following scenarios are |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
844 * possible: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
845 * |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
846 * 1. All structs defining frames declare the output size. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
847 * 2. The decompressed size is embedded within the zstd frame. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
848 * 3. The decompressed size is not stored anywhere. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
849 * |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
850 * For now, we only support #1 and #2. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
851 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
852 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
853 /* Resolve ouput segments. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
854 for (frameIndex = state->startOffset; frameIndex <= state->endOffset; frameIndex++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
855 FramePointer* fp = &framePointers[frameIndex]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
856 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
857 if (0 == fp->destSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
858 fp->destSize = ZSTD_getDecompressedSize(fp->sourceData, fp->sourceSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
859 if (0 == fp->destSize && state->requireOutputSizes) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
860 state->error = WorkerError_unknownSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
861 state->errorOffset = frameIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
862 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
863 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
864 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
865 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
866 totalOutputSize += fp->destSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
867 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
868 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
869 state->destBuffers = calloc(1, sizeof(DestBuffer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
870 if (NULL == state->destBuffers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
871 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
872 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
873 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
874 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
875 state->destCount = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
876 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
877 destBuffer = &state->destBuffers[state->destCount - 1]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
878 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
879 assert(framePointers[state->startOffset].destSize > 0); /* For now. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
880 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
881 allocationSize = roundpow2(state->totalSourceSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
882 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
883 if (framePointers[state->startOffset].destSize > allocationSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
884 allocationSize = roundpow2(framePointers[state->startOffset].destSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
885 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
886 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
887 destBuffer->dest = malloc(allocationSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
888 if (NULL == destBuffer->dest) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
889 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
890 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
891 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
892 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
893 destBuffer->destSize = allocationSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
894 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
895 destBuffer->segments = calloc(remainingItems, sizeof(BufferSegment)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
896 if (NULL == destBuffer->segments) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
897 /* Caller will free state->dest as part of cleanup. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
898 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
899 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
900 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
901 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
902 destBuffer->segmentsSize = remainingItems; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
903 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
904 for (frameIndex = state->startOffset; frameIndex <= state->endOffset; frameIndex++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
905 const void* source = framePointers[frameIndex].sourceData; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
906 const size_t sourceSize = framePointers[frameIndex].sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
907 void* dest; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
908 const size_t decompressedSize = framePointers[frameIndex].destSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
909 size_t destAvailable = destBuffer->destSize - destOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
910 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
911 assert(decompressedSize > 0); /* For now. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
912 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
913 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
914 * Not enough space in current buffer. Finish current before and allocate and |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
915 * switch to a new one. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
916 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
917 if (decompressedSize > destAvailable) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
918 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
919 * Shrinking the destination buffer is optional. But it should be cheap, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
920 * so we just do it. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
921 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
922 if (destAvailable) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
923 tmpBuf = realloc(destBuffer->dest, destOffset); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
924 if (NULL == tmpBuf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
925 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
926 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
927 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
928 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
929 destBuffer->dest = tmpBuf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
930 destBuffer->destSize = destOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
931 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
932 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
933 /* Truncate segments buffer. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
934 tmpBuf = realloc(destBuffer->segments, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
935 (frameIndex - currentBufferStartIndex) * sizeof(BufferSegment)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
936 if (NULL == tmpBuf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
937 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
938 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
939 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
940 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
941 destBuffer->segments = tmpBuf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
942 destBuffer->segmentsSize = frameIndex - currentBufferStartIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
943 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
944 /* Grow space for new DestBuffer. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
945 tmpBuf = realloc(state->destBuffers, (state->destCount + 1) * sizeof(DestBuffer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
946 if (NULL == tmpBuf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
947 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
948 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
949 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
950 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
951 state->destBuffers = tmpBuf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
952 state->destCount++; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
953 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
954 destBuffer = &state->destBuffers[state->destCount - 1]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
955 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
956 /* Don't take any chances will non-NULL pointers. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
957 memset(destBuffer, 0, sizeof(DestBuffer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
958 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
959 allocationSize = roundpow2(state->totalSourceSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
960 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
961 if (decompressedSize > allocationSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
962 allocationSize = roundpow2(decompressedSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
963 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
964 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
965 destBuffer->dest = malloc(allocationSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
966 if (NULL == destBuffer->dest) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
967 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
968 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
969 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
970 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
971 destBuffer->destSize = allocationSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
972 destAvailable = allocationSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
973 destOffset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
974 localOffset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
975 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
976 destBuffer->segments = calloc(remainingItems, sizeof(BufferSegment)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
977 if (NULL == destBuffer->segments) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
978 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
979 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
980 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
981 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
982 destBuffer->segmentsSize = remainingItems; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
983 currentBufferStartIndex = frameIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
984 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
985 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
986 dest = (char*)destBuffer->dest + destOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
987 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
988 if (state->ddict) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
989 zresult = ZSTD_decompress_usingDDict(state->dctx, dest, decompressedSize, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
990 source, sourceSize, state->ddict); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
991 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
992 else { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
993 zresult = ZSTD_decompressDCtx(state->dctx, dest, decompressedSize, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
994 source, sourceSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
995 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
996 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
997 if (ZSTD_isError(zresult)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
998 state->error = WorkerError_zstd; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
999 state->zresult = zresult; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1000 state->errorOffset = frameIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1001 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1002 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1003 else if (zresult != decompressedSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1004 state->error = WorkerError_sizeMismatch; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1005 state->zresult = zresult; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1006 state->errorOffset = frameIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1007 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1008 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1009 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1010 destBuffer->segments[localOffset].offset = destOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1011 destBuffer->segments[localOffset].length = decompressedSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1012 destOffset += zresult; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1013 localOffset++; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1014 remainingItems--; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1015 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1016 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1017 if (destBuffer->destSize > destOffset) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1018 tmpBuf = realloc(destBuffer->dest, destOffset); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1019 if (NULL == tmpBuf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1020 state->error = WorkerError_memory; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1021 return; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1022 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1023 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1024 destBuffer->dest = tmpBuf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1025 destBuffer->destSize = destOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1026 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1027 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1028 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1029 ZstdBufferWithSegmentsCollection* decompress_from_framesources(ZstdDecompressor* decompressor, FrameSources* frames, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1030 unsigned int threadCount) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1031 void* dictData = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1032 size_t dictSize = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1033 Py_ssize_t i = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1034 int errored = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1035 Py_ssize_t segmentsCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1036 ZstdBufferWithSegments* bws = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1037 PyObject* resultArg = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1038 Py_ssize_t resultIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1039 ZstdBufferWithSegmentsCollection* result = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1040 FramePointer* framePointers = frames->frames; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1041 unsigned long long workerBytes = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1042 int currentThread = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1043 Py_ssize_t workerStartOffset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1044 POOL_ctx* pool = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1045 WorkerState* workerStates = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1046 unsigned long long bytesPerWorker; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1047 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1048 /* Caller should normalize 0 and negative values to 1 or larger. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1049 assert(threadCount >= 1); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1050 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1051 /* More threads than inputs makes no sense under any conditions. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1052 threadCount = frames->framesSize < threadCount ? (unsigned int)frames->framesSize |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1053 : threadCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1054 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1055 /* TODO lower thread count if input size is too small and threads would just |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1056 add overhead. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1057 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1058 if (decompressor->dict) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1059 dictData = decompressor->dict->dictData; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1060 dictSize = decompressor->dict->dictSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1061 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1062 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1063 if (dictData && !decompressor->ddict) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1064 Py_BEGIN_ALLOW_THREADS |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1065 decompressor->ddict = ZSTD_createDDict_byReference(dictData, dictSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1066 Py_END_ALLOW_THREADS |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1067 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1068 if (!decompressor->ddict) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1069 PyErr_SetString(ZstdError, "could not create decompression dict"); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1070 return NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1071 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1072 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1073 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1074 /* If threadCount==1, we don't start a thread pool. But we do leverage the |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1075 same API for dispatching work. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1076 workerStates = PyMem_Malloc(threadCount * sizeof(WorkerState)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1077 if (NULL == workerStates) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1078 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1079 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1080 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1081 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1082 memset(workerStates, 0, threadCount * sizeof(WorkerState)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1083 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1084 if (threadCount > 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1085 pool = POOL_create(threadCount, 1); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1086 if (NULL == pool) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1087 PyErr_SetString(ZstdError, "could not initialize zstd thread pool"); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1088 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1089 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1090 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1091 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1092 bytesPerWorker = frames->compressedSize / threadCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1093 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1094 for (i = 0; i < threadCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1095 workerStates[i].dctx = ZSTD_createDCtx(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1096 if (NULL == workerStates[i].dctx) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1097 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1098 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1099 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1100 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1101 ZSTD_copyDCtx(workerStates[i].dctx, decompressor->dctx); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1102 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1103 workerStates[i].ddict = decompressor->ddict; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1104 workerStates[i].framePointers = framePointers; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1105 workerStates[i].requireOutputSizes = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1106 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1107 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1108 Py_BEGIN_ALLOW_THREADS |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1109 /* There are many ways to split work among workers. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1110 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1111 For now, we take a simple approach of splitting work so each worker |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1112 gets roughly the same number of input bytes. This will result in more |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1113 starvation than running N>threadCount jobs. But it avoids complications |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1114 around state tracking, which could involve extra locking. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1115 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1116 for (i = 0; i < frames->framesSize; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1117 workerBytes += frames->frames[i].sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1118 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1119 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1120 * The last worker/thread needs to handle all remaining work. Don't |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1121 * trigger it prematurely. Defer to the block outside of the loop. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1122 * (But still process this loop so workerBytes is correct. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1123 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1124 if (currentThread == threadCount - 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1125 continue; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1126 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1127 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1128 if (workerBytes >= bytesPerWorker) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1129 workerStates[currentThread].startOffset = workerStartOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1130 workerStates[currentThread].endOffset = i; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1131 workerStates[currentThread].totalSourceSize = workerBytes; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1132 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1133 if (threadCount > 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1134 POOL_add(pool, (POOL_function)decompress_worker, &workerStates[currentThread]); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1135 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1136 else { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1137 decompress_worker(&workerStates[currentThread]); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1138 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1139 currentThread++; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1140 workerStartOffset = i + 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1141 workerBytes = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1142 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1143 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1144 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1145 if (workerBytes) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1146 workerStates[currentThread].startOffset = workerStartOffset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1147 workerStates[currentThread].endOffset = frames->framesSize - 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1148 workerStates[currentThread].totalSourceSize = workerBytes; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1149 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1150 if (threadCount > 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1151 POOL_add(pool, (POOL_function)decompress_worker, &workerStates[currentThread]); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1152 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1153 else { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1154 decompress_worker(&workerStates[currentThread]); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1155 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1156 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1157 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1158 if (threadCount > 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1159 POOL_free(pool); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1160 pool = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1161 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1162 Py_END_ALLOW_THREADS |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1163 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1164 for (i = 0; i < threadCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1165 switch (workerStates[i].error) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1166 case WorkerError_none: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1167 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1168 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1169 case WorkerError_zstd: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1170 PyErr_Format(ZstdError, "error decompressing item %zd: %s", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1171 workerStates[i].errorOffset, ZSTD_getErrorName(workerStates[i].zresult)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1172 errored = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1173 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1174 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1175 case WorkerError_memory: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1176 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1177 errored = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1178 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1179 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1180 case WorkerError_sizeMismatch: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1181 PyErr_Format(ZstdError, "error decompressing item %zd: decompressed %zu bytes; expected %llu", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1182 workerStates[i].errorOffset, workerStates[i].zresult, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1183 framePointers[workerStates[i].errorOffset].destSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1184 errored = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1185 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1186 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1187 case WorkerError_unknownSize: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1188 PyErr_Format(PyExc_ValueError, "could not determine decompressed size of item %zd", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1189 workerStates[i].errorOffset); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1190 errored = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1191 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1192 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1193 default: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1194 PyErr_Format(ZstdError, "unhandled error type: %d; this is a bug", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1195 workerStates[i].error); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1196 errored = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1197 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1198 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1199 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1200 if (errored) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1201 break; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1202 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1203 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1204 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1205 if (errored) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1206 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1207 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1208 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1209 segmentsCount = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1210 for (i = 0; i < threadCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1211 segmentsCount += workerStates[i].destCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1212 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1213 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1214 resultArg = PyTuple_New(segmentsCount); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1215 if (NULL == resultArg) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1216 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1217 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1218 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1219 resultIndex = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1220 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1221 for (i = 0; i < threadCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1222 Py_ssize_t bufferIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1223 WorkerState* state = &workerStates[i]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1224 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1225 for (bufferIndex = 0; bufferIndex < state->destCount; bufferIndex++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1226 DestBuffer* destBuffer = &state->destBuffers[bufferIndex]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1227 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1228 bws = BufferWithSegments_FromMemory(destBuffer->dest, destBuffer->destSize, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1229 destBuffer->segments, destBuffer->segmentsSize); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1230 if (NULL == bws) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1231 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1232 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1233 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1234 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1235 * Memory for buffer and segments was allocated using malloc() in worker |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1236 * and the memory is transferred to the BufferWithSegments instance. So |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1237 * tell instance to use free() and NULL the reference in the state struct |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1238 * so it isn't freed below. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1239 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1240 bws->useFree = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1241 destBuffer->dest = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1242 destBuffer->segments = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1243 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1244 PyTuple_SET_ITEM(resultArg, resultIndex++, (PyObject*)bws); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1245 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1246 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1247 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1248 result = (ZstdBufferWithSegmentsCollection*)PyObject_CallObject( |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1249 (PyObject*)&ZstdBufferWithSegmentsCollectionType, resultArg); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1250 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1251 finally: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1252 Py_CLEAR(resultArg); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1253 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1254 if (workerStates) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1255 for (i = 0; i < threadCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1256 Py_ssize_t bufferIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1257 WorkerState* state = &workerStates[i]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1258 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1259 if (state->dctx) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1260 ZSTD_freeDCtx(state->dctx); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1261 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1262 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1263 for (bufferIndex = 0; bufferIndex < state->destCount; bufferIndex++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1264 if (state->destBuffers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1265 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1266 * Will be NULL if memory transfered to a BufferWithSegments. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1267 * Otherwise it is left over after an error occurred. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1268 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1269 free(state->destBuffers[bufferIndex].dest); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1270 free(state->destBuffers[bufferIndex].segments); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1271 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1272 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1273 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1274 free(state->destBuffers); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1275 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1276 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1277 PyMem_Free(workerStates); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1278 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1279 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1280 POOL_free(pool); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1281 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1282 return result; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1283 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1284 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1285 PyDoc_STRVAR(Decompressor_multi_decompress_to_buffer__doc__, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1286 "Decompress multiple frames to output buffers\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1287 "\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1288 "Receives a ``BufferWithSegments``, a ``BufferWithSegmentsCollection`` or a\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1289 "list of bytes-like objects. Each item in the passed collection should be a\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1290 "compressed zstd frame.\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1291 "\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1292 "Unless ``decompressed_sizes`` is specified, the content size *must* be\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1293 "written into the zstd frame header. If ``decompressed_sizes`` is specified,\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1294 "it is an object conforming to the buffer protocol that represents an array\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1295 "of 64-bit unsigned integers in the machine's native format. Specifying\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1296 "``decompressed_sizes`` avoids a pre-scan of each frame to determine its\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1297 "output size.\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1298 "\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1299 "Returns a ``BufferWithSegmentsCollection`` containing the decompressed\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1300 "data. All decompressed data is allocated in a single memory buffer. The\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1301 "``BufferWithSegments`` instance tracks which objects are at which offsets\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1302 "and their respective lengths.\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1303 "\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1304 "The ``threads`` argument controls how many threads to use for operations.\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1305 "Negative values will use the same number of threads as logical CPUs on the\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1306 "machine.\n" |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1307 ); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1308 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1309 static ZstdBufferWithSegmentsCollection* Decompressor_multi_decompress_to_buffer(ZstdDecompressor* self, PyObject* args, PyObject* kwargs) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1310 static char* kwlist[] = { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1311 "frames", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1312 "decompressed_sizes", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1313 "threads", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1314 NULL |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1315 }; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1316 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1317 PyObject* frames; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1318 Py_buffer frameSizes; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1319 int threads = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1320 Py_ssize_t frameCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1321 Py_buffer* frameBuffers = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1322 FramePointer* framePointers = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1323 unsigned long long* frameSizesP = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1324 unsigned long long totalInputSize = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1325 FrameSources frameSources; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1326 ZstdBufferWithSegmentsCollection* result = NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1327 Py_ssize_t i; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1328 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1329 memset(&frameSizes, 0, sizeof(frameSizes)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1330 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1331 #if PY_MAJOR_VERSION >= 3 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1332 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|y*i:multi_decompress_to_buffer", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1333 #else |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1334 if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|s*i:multi_decompress_to_buffer", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1335 #endif |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1336 kwlist, &frames, &frameSizes, &threads)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1337 return NULL; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1338 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1339 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1340 if (frameSizes.buf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1341 if (!PyBuffer_IsContiguous(&frameSizes, 'C') || frameSizes.ndim > 1) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1342 PyErr_SetString(PyExc_ValueError, "decompressed_sizes buffer should be contiguous and have a single dimension"); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1343 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1344 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1345 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1346 frameSizesP = (unsigned long long*)frameSizes.buf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1347 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1348 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1349 if (threads < 0) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1350 threads = cpu_count(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1351 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1352 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1353 if (threads < 2) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1354 threads = 1; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1355 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1356 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1357 if (PyObject_TypeCheck(frames, &ZstdBufferWithSegmentsType)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1358 ZstdBufferWithSegments* buffer = (ZstdBufferWithSegments*)frames; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1359 frameCount = buffer->segmentCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1360 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1361 if (frameSizes.buf && frameSizes.len != frameCount * (Py_ssize_t)sizeof(unsigned long long)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1362 PyErr_Format(PyExc_ValueError, "decompressed_sizes size mismatch; expected %zd, got %zd", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1363 frameCount * sizeof(unsigned long long), frameSizes.len); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1364 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1365 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1366 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1367 framePointers = PyMem_Malloc(frameCount * sizeof(FramePointer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1368 if (!framePointers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1369 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1370 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1371 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1372 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1373 for (i = 0; i < frameCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1374 void* sourceData; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1375 unsigned long long sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1376 unsigned long long decompressedSize = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1377 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1378 if (buffer->segments[i].offset + buffer->segments[i].length > buffer->dataSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1379 PyErr_Format(PyExc_ValueError, "item %zd has offset outside memory area", i); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1380 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1381 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1382 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1383 sourceData = (char*)buffer->data + buffer->segments[i].offset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1384 sourceSize = buffer->segments[i].length; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1385 totalInputSize += sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1386 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1387 if (frameSizesP) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1388 decompressedSize = frameSizesP[i]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1389 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1390 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1391 framePointers[i].sourceData = sourceData; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1392 framePointers[i].sourceSize = sourceSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1393 framePointers[i].destSize = decompressedSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1394 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1395 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1396 else if (PyObject_TypeCheck(frames, &ZstdBufferWithSegmentsCollectionType)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1397 Py_ssize_t offset = 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1398 ZstdBufferWithSegments* buffer; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1399 ZstdBufferWithSegmentsCollection* collection = (ZstdBufferWithSegmentsCollection*)frames; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1400 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1401 frameCount = BufferWithSegmentsCollection_length(collection); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1402 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1403 if (frameSizes.buf && frameSizes.len != frameCount) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1404 PyErr_Format(PyExc_ValueError, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1405 "decompressed_sizes size mismatch; expected %zd; got %zd", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1406 frameCount * sizeof(unsigned long long), frameSizes.len); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1407 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1408 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1409 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1410 framePointers = PyMem_Malloc(frameCount * sizeof(FramePointer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1411 if (NULL == framePointers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1412 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1413 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1414 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1415 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1416 /* Iterate the data structure directly because it is faster. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1417 for (i = 0; i < collection->bufferCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1418 Py_ssize_t segmentIndex; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1419 buffer = collection->buffers[i]; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1420 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1421 for (segmentIndex = 0; segmentIndex < buffer->segmentCount; segmentIndex++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1422 if (buffer->segments[segmentIndex].offset + buffer->segments[segmentIndex].length > buffer->dataSize) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1423 PyErr_Format(PyExc_ValueError, "item %zd has offset outside memory area", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1424 offset); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1425 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1426 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1427 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1428 totalInputSize += buffer->segments[segmentIndex].length; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1429 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1430 framePointers[offset].sourceData = (char*)buffer->data + buffer->segments[segmentIndex].offset; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1431 framePointers[offset].sourceSize = buffer->segments[segmentIndex].length; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1432 framePointers[offset].destSize = frameSizesP ? frameSizesP[offset] : 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1433 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1434 offset++; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1435 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1436 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1437 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1438 else if (PyList_Check(frames)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1439 frameCount = PyList_GET_SIZE(frames); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1440 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1441 if (frameSizes.buf && frameSizes.len != frameCount * (Py_ssize_t)sizeof(unsigned long long)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1442 PyErr_Format(PyExc_ValueError, "decompressed_sizes size mismatch; expected %zd, got %zd", |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1443 frameCount * sizeof(unsigned long long), frameSizes.len); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1444 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1445 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1446 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1447 framePointers = PyMem_Malloc(frameCount * sizeof(FramePointer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1448 if (!framePointers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1449 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1450 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1451 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1452 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1453 /* |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1454 * It is not clear whether Py_buffer.buf is still valid after |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1455 * PyBuffer_Release. So, we hold a reference to all Py_buffer instances |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1456 * for the duration of the operation. |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1457 */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1458 frameBuffers = PyMem_Malloc(frameCount * sizeof(Py_buffer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1459 if (NULL == frameBuffers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1460 PyErr_NoMemory(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1461 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1462 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1463 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1464 memset(frameBuffers, 0, frameCount * sizeof(Py_buffer)); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1465 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1466 /* Do a pass to assemble info about our input buffers and output sizes. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1467 for (i = 0; i < frameCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1468 if (0 != PyObject_GetBuffer(PyList_GET_ITEM(frames, i), |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1469 &frameBuffers[i], PyBUF_CONTIG_RO)) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1470 PyErr_Clear(); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1471 PyErr_Format(PyExc_TypeError, "item %zd not a bytes like object", i); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1472 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1473 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1474 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1475 totalInputSize += frameBuffers[i].len; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1476 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1477 framePointers[i].sourceData = frameBuffers[i].buf; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1478 framePointers[i].sourceSize = frameBuffers[i].len; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1479 framePointers[i].destSize = frameSizesP ? frameSizesP[i] : 0; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1480 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1481 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1482 else { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1483 PyErr_SetString(PyExc_TypeError, "argument must be list or BufferWithSegments"); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1484 goto finally; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1485 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1486 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1487 /* We now have an array with info about our inputs and outputs. Feed it into |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1488 our generic decompression function. */ |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1489 frameSources.frames = framePointers; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1490 frameSources.framesSize = frameCount; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1491 frameSources.compressedSize = totalInputSize; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1492 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1493 result = decompress_from_framesources(self, &frameSources, threads); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1494 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1495 finally: |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1496 if (frameSizes.buf) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1497 PyBuffer_Release(&frameSizes); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1498 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1499 PyMem_Free(framePointers); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1500 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1501 if (frameBuffers) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1502 for (i = 0; i < frameCount; i++) { |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1503 PyBuffer_Release(&frameBuffers[i]); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1504 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1505 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1506 PyMem_Free(frameBuffers); |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1507 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1508 |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1509 return result; |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1510 } |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1511 |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1512 static PyMethodDef Decompressor_methods[] = { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1513 { "copy_stream", (PyCFunction)Decompressor_copy_stream, METH_VARARGS | METH_KEYWORDS, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1514 Decompressor_copy_stream__doc__ }, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1515 { "decompress", (PyCFunction)Decompressor_decompress, METH_VARARGS | METH_KEYWORDS, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1516 Decompressor_decompress__doc__ }, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1517 { "decompressobj", (PyCFunction)Decompressor_decompressobj, METH_NOARGS, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1518 Decompressor_decompressobj__doc__ }, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1519 { "read_from", (PyCFunction)Decompressor_read_from, METH_VARARGS | METH_KEYWORDS, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1520 Decompressor_read_from__doc__ }, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1521 { "write_to", (PyCFunction)Decompressor_write_to, METH_VARARGS | METH_KEYWORDS, |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1522 Decompressor_write_to__doc__ }, |
30895
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
1523 { "decompress_content_dict_chain", (PyCFunction)Decompressor_decompress_content_dict_chain, |
c32454d69b85
zstd: vendor python-zstandard 0.7.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30830
diff
changeset
|
1524 METH_VARARGS | METH_KEYWORDS, Decompressor_decompress_content_dict_chain__doc__ }, |
31796
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1525 { "multi_decompress_to_buffer", (PyCFunction)Decompressor_multi_decompress_to_buffer, |
e0dc40530c5a
zstd: vendor python-zstandard 0.8.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30895
diff
changeset
|
1526 METH_VARARGS | METH_KEYWORDS, Decompressor_multi_decompress_to_buffer__doc__ }, |
30435
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1527 { NULL, NULL } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1528 }; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1529 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1530 PyTypeObject ZstdDecompressorType = { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1531 PyVarObject_HEAD_INIT(NULL, 0) |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1532 "zstd.ZstdDecompressor", /* tp_name */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1533 sizeof(ZstdDecompressor), /* tp_basicsize */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1534 0, /* tp_itemsize */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1535 (destructor)Decompressor_dealloc, /* tp_dealloc */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1536 0, /* tp_print */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1537 0, /* tp_getattr */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1538 0, /* tp_setattr */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1539 0, /* tp_compare */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1540 0, /* tp_repr */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1541 0, /* tp_as_number */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1542 0, /* tp_as_sequence */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1543 0, /* tp_as_mapping */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1544 0, /* tp_hash */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1545 0, /* tp_call */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1546 0, /* tp_str */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1547 0, /* tp_getattro */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1548 0, /* tp_setattro */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1549 0, /* tp_as_buffer */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1550 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1551 Decompressor__doc__, /* tp_doc */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1552 0, /* tp_traverse */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1553 0, /* tp_clear */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1554 0, /* tp_richcompare */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1555 0, /* tp_weaklistoffset */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1556 0, /* tp_iter */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1557 0, /* tp_iternext */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1558 Decompressor_methods, /* tp_methods */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1559 0, /* tp_members */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1560 0, /* tp_getset */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1561 0, /* tp_base */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1562 0, /* tp_dict */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1563 0, /* tp_descr_get */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1564 0, /* tp_descr_set */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1565 0, /* tp_dictoffset */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1566 (initproc)Decompressor_init, /* tp_init */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1567 0, /* tp_alloc */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1568 PyType_GenericNew, /* tp_new */ |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1569 }; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1570 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1571 void decompressor_module_init(PyObject* mod) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1572 Py_TYPE(&ZstdDecompressorType) = &PyType_Type; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1573 if (PyType_Ready(&ZstdDecompressorType) < 0) { |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1574 return; |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1575 } |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1576 |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1577 Py_INCREF((PyObject*)&ZstdDecompressorType); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1578 PyModule_AddObject(mod, "ZstdDecompressor", |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1579 (PyObject*)&ZstdDecompressorType); |
b86a448a2965
zstd: vendor python-zstandard 0.5.0
Gregory Szorc <gregory.szorc@gmail.com>
parents:
diff
changeset
|
1580 } |