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Merge pull request #205 from inikep/dev

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legacy decoder for v0.6
This commit is contained in:
Yann Collet
2016-06-10 17:13:07 +02:00
committed by GitHub
parent 0974f681a4 2c0932a89b
commit 1869f7966e
8 changed files with 4951 additions and 71 deletions
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117
programs/legacy/fileio_legacy.c
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@@ -473,35 +473,118 @@ unsigned long long FIOv05_decompressFrame(dRessv05_t ress,
}
/*===== v0.6.x =====*/
typedef struct {
void* srcBuffer;
size_t srcBufferSize;
void* dstBuffer;
size_t dstBufferSize;
const void* dictBuffer;
size_t dictBufferSize;
ZBUFFv06_DCtx* dctx;
} dRessv06_t;
static dRessv06_t FIOv06_createDResources(void)
{
dRessv06_t ress;
/* init */
ress.dctx = ZBUFFv06_createDCtx();
if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZBUFF decompression context");
ress.dictBuffer = NULL; ress.dictBufferSize=0;
/* Allocate Memory */
ress.srcBufferSize = ZBUFFv06_recommendedDInSize();
ress.srcBuffer = malloc(ress.srcBufferSize);
ress.dstBufferSize = ZBUFFv06_recommendedDOutSize();
ress.dstBuffer = malloc(ress.dstBufferSize);
if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory");
return ress;
}
static void FIOv06_freeDResources(dRessv06_t ress)
{
size_t const errorCode = ZBUFFv06_freeDCtx(ress.dctx);
if (ZBUFFv06_isError(errorCode)) EXM_THROW(69, "Error : can't free ZBUFF context resource : %s", ZBUFFv06_getErrorName(errorCode));
free(ress.srcBuffer);
free(ress.dstBuffer);
}
unsigned long long FIOv06_decompressFrame(dRessv06_t ress,
FILE* foutput, FILE* finput)
{
U64 frameSize = 0;
size_t readSize = 4;
MEM_writeLE32(ress.srcBuffer, ZSTDv06_MAGICNUMBER);
ZBUFFv06_decompressInitDictionary(ress.dctx, ress.dictBuffer, ress.dictBufferSize);
while (1) {
/* Decode */
size_t inSize=readSize, decodedSize=ress.dstBufferSize;
size_t toRead = ZBUFFv06_decompressContinue(ress.dctx, ress.dstBuffer, &decodedSize, ress.srcBuffer, &inSize);
if (ZBUFFv06_isError(toRead)) EXM_THROW(36, "Decoding error : %s", ZBUFFv06_getErrorName(toRead));
readSize -= inSize;
/* Write block */
{ size_t const sizeCheck = fwrite(ress.dstBuffer, 1, decodedSize, foutput);
if (sizeCheck != decodedSize) EXM_THROW(37, "Write error : unable to write data block to destination file"); }
frameSize += decodedSize;
DISPLAYUPDATE(2, "\rDecoded : %u MB... ", (U32)(frameSize>>20) );
if (toRead == 0) break;
if (readSize) EXM_THROW(38, "Decoding error : should consume entire input");
/* Fill input buffer */
if (toRead > ress.srcBufferSize) EXM_THROW(34, "too large block");
readSize = fread(ress.srcBuffer, 1, toRead, finput);
if (readSize != toRead) EXM_THROW(35, "Read error");
}
return frameSize;
}
/*===== General legacy dispatcher =====*/
unsigned long long FIO_decompressLegacyFrame(FILE* foutput, FILE* finput,
const void* dictBuffer, size_t dictSize,
U32 magicNumberLE)
{
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE :
return FIOv01_decompressFrame(foutput, finput);
case ZSTDv02_magicNumber :
return FIOv02_decompressFrame(foutput, finput);
case ZSTDv03_magicNumber :
return FIOv03_decompressFrame(foutput, finput);
case ZSTDv04_magicNumber :
{ dRessv04_t r = FIOv04_createDResources();
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE :
return FIOv01_decompressFrame(foutput, finput);
case ZSTDv02_magicNumber :
return FIOv02_decompressFrame(foutput, finput);
case ZSTDv03_magicNumber :
return FIOv03_decompressFrame(foutput, finput);
case ZSTDv04_magicNumber :
{ dRessv04_t r = FIOv04_createDResources();
unsigned long long const s = FIOv04_decompressFrame(r, foutput, finput);
FIOv04_freeDResources(r);
return s;
}
case ZSTDv05_MAGICNUMBER :
{ dRessv05_t r = FIOv05_createDResources();
}
case ZSTDv05_MAGICNUMBER :
{ dRessv05_t r = FIOv05_createDResources();
r.dictBuffer = dictBuffer;
r.dictBufferSize = dictSize;
{ unsigned long long const s = FIOv05_decompressFrame(r, foutput, finput);
FIOv05_freeDResources(r);
return s;
} }
default :
return ERROR(prefix_unknown);
}
} }
case ZSTDv06_MAGICNUMBER :
{ dRessv06_t r = FIOv06_createDResources();
r.dictBuffer = dictBuffer;
r.dictBufferSize = dictSize;
{ unsigned long long const s = FIOv06_decompressFrame(r, foutput, finput);
FIOv06_freeDResources(r);
return s;
} }
default :
return ERROR(prefix_unknown);
}
}