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new frame format, allowing custom window size

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This commit is contained in:
Yann Collet
2016-06-06 00:26:38 +02:00
parent 89703d20fb
commit 673f0d7cdc
9 changed files with 146 additions and 99 deletions
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lib/decompress/zbuff_decompress.c
+3 -3
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@@ -191,10 +191,10 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
if (ZSTD_isError(h2Result)) return h2Result;
} }
if (zbd->fParams.windowLog < ZSTD_WINDOWLOG_ABSOLUTEMIN) zbd->fParams.windowLog = ZSTD_WINDOWLOG_ABSOLUTEMIN; /* required for buffer allocation */
zbd->fParams.windowSize = MAX(zbd->fParams.windowSize, 1U << ZSTD_WINDOWLOG_ABSOLUTEMIN);
/* Frame header instruct buffer sizes */
{ size_t const blockSize = MIN(1 << zbd->fParams.windowLog, ZSTD_BLOCKSIZE_MAX);
{ size_t const blockSize = MIN(zbd->fParams.windowSize, ZSTD_BLOCKSIZE_MAX);
zbd->blockSize = blockSize;
if (zbd->inBuffSize < blockSize) {
zbd->customMem.customFree(zbd->customMem.opaque, zbd->inBuff);
@@ -202,7 +202,7 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
zbd->inBuff = (char*)zbd->customMem.customAlloc(zbd->customMem.opaque, blockSize);
if (zbd->inBuff == NULL) return ERROR(memory_allocation);
}
{ size_t const neededOutSize = ((size_t)1 << zbd->fParams.windowLog) + blockSize;
{ size_t const neededOutSize = zbd->fParams.windowSize + blockSize;
if (zbd->outBuffSize < neededOutSize) {
zbd->customMem.customFree(zbd->customMem.opaque, zbd->outBuff);
zbd->outBuffSize = neededOutSize;