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11fdf7f2 | 1 | /* |
f67539c2 | 2 | * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc. |
7c673cae FG |
3 | * All rights reserved. |
4 | * | |
11fdf7f2 TL |
5 | * This source code is licensed under both the BSD-style license (found in the |
6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found | |
7 | * in the COPYING file in the root directory of this source tree). | |
8 | * You may select, at your option, one of the above-listed licenses. | |
7c673cae FG |
9 | */ |
10 | ||
11 | ||
12 | ||
13 | /* ************************************* | |
14 | * Dependencies | |
15 | ***************************************/ | |
16 | #define ZBUFF_STATIC_LINKING_ONLY | |
17 | #include "zbuff.h" | |
18 | ||
19 | ||
20 | ZBUFF_DCtx* ZBUFF_createDCtx(void) | |
21 | { | |
22 | return ZSTD_createDStream(); | |
23 | } | |
24 | ||
25 | ZBUFF_DCtx* ZBUFF_createDCtx_advanced(ZSTD_customMem customMem) | |
26 | { | |
27 | return ZSTD_createDStream_advanced(customMem); | |
28 | } | |
29 | ||
30 | size_t ZBUFF_freeDCtx(ZBUFF_DCtx* zbd) | |
31 | { | |
32 | return ZSTD_freeDStream(zbd); | |
33 | } | |
34 | ||
35 | ||
36 | /* *** Initialization *** */ | |
37 | ||
38 | size_t ZBUFF_decompressInitDictionary(ZBUFF_DCtx* zbd, const void* dict, size_t dictSize) | |
39 | { | |
40 | return ZSTD_initDStream_usingDict(zbd, dict, dictSize); | |
41 | } | |
42 | ||
43 | size_t ZBUFF_decompressInit(ZBUFF_DCtx* zbd) | |
44 | { | |
45 | return ZSTD_initDStream(zbd); | |
46 | } | |
47 | ||
48 | ||
49 | /* *** Decompression *** */ | |
50 | ||
51 | size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd, | |
52 | void* dst, size_t* dstCapacityPtr, | |
53 | const void* src, size_t* srcSizePtr) | |
54 | { | |
55 | ZSTD_outBuffer outBuff; | |
56 | ZSTD_inBuffer inBuff; | |
57 | size_t result; | |
58 | outBuff.dst = dst; | |
59 | outBuff.pos = 0; | |
60 | outBuff.size = *dstCapacityPtr; | |
61 | inBuff.src = src; | |
62 | inBuff.pos = 0; | |
63 | inBuff.size = *srcSizePtr; | |
64 | result = ZSTD_decompressStream(zbd, &outBuff, &inBuff); | |
65 | *dstCapacityPtr = outBuff.pos; | |
66 | *srcSizePtr = inBuff.pos; | |
67 | return result; | |
68 | } | |
69 | ||
70 | ||
71 | /* ************************************* | |
72 | * Tool functions | |
73 | ***************************************/ | |
74 | size_t ZBUFF_recommendedDInSize(void) { return ZSTD_DStreamInSize(); } | |
75 | size_t ZBUFF_recommendedDOutSize(void) { return ZSTD_DStreamOutSize(); } |