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ZSTD_decompress now handles multiple frames

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This commit is contained in:
Sean Purcell
2017-02-07 16:16:55 -08:00
parent 4e709712e1
commit ba2ad9f25c
3 changed files with 137 additions and 25 deletions
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40
tests/fuzzer.c
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@ -167,6 +167,46 @@ static int basicUnitTests(U32 seed, double compressibility)
if (ZSTD_getErrorCode(r) != ZSTD_error_srcSize_wrong) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
/* Simple API multiframe test */
DISPLAYLEVEL(4, "test%3i : compress multiple frames : ", testNb++);
{ size_t off = 0;
int i;
int const segs = 4;
/* only use the first half so we don't push against size limit of compressedBuffer */
size_t const segSize = (CNBuffSize / 2) / segs;
for (i = 0; i < segs; i++) {
CHECK_V(r,
ZSTD_compress(
(BYTE *)compressedBuffer + off, CNBuffSize - off,
(BYTE *)CNBuffer + segSize * i,
segSize, 5));
off += r;
if (i == segs/2) {
/* insert skippable frame */
const U32 skipLen = 128 KB;
MEM_writeLE32((BYTE*)compressedBuffer + off, ZSTD_MAGIC_SKIPPABLE_START);
MEM_writeLE32((BYTE*)compressedBuffer + off + 4, skipLen);
off += skipLen + ZSTD_skippableHeaderSize;
}
}
cSize = off;
}
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : get decompressed size of multiple frames : ", testNb++);
{ unsigned long long const r = ZSTD_findDecompressedSize(compressedBuffer, cSize);
if (r != CNBuffSize / 2) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : decompress multiple frames : ", testNb++);
{ CHECK_V(r, ZSTD_decompress(decodedBuffer, CNBuffSize, compressedBuffer, cSize));
if (r != CNBuffSize / 2) goto _output_error; }
DISPLAYLEVEL(4, "OK \n");
DISPLAYLEVEL(4, "test%3i : check decompressed result : ", testNb++);
if (memcmp(decodedBuffer, CNBuffer, CNBuffSize / 2) != 0) goto _output_error;
DISPLAYLEVEL(4, "OK \n");
/* Dictionary and CCtx Duplication tests */
{ ZSTD_CCtx* const ctxOrig = ZSTD_createCCtx();
ZSTD_CCtx* const ctxDuplicated = ZSTD_createCCtx();