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Copy pathLzma2Enc.c
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807 lines (650 loc) · 18.6 KB
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/* Lzma2Enc.c -- LZMA2 Encoder
: Igor Pavlov : Public domain */
#include "Precomp.h"
#include <string.h>
/* #define Z7_ST */
#include "Lzma2Enc.h"
#ifndef Z7_ST
#include "MtCoder.h"
#else
#define MTCODER_THREADS_MAX 1
#endif
#define LZMA2_CONTROL_LZMA (1 << 7)
#define LZMA2_CONTROL_COPY_NO_RESET 2
#define LZMA2_CONTROL_COPY_RESET_DIC 1
#define LZMA2_CONTROL_EOF 0
#define LZMA2_LCLP_MAX 4
#define LZMA2_DIC_SIZE_FROM_PROP(p) (((UInt32)2 | ((p) & 1)) << ((p) / 2 + 11))
#define LZMA2_PACK_SIZE_MAX (1 << 16)
#define LZMA2_COPY_CHUNK_SIZE LZMA2_PACK_SIZE_MAX
#define LZMA2_UNPACK_SIZE_MAX (1 << 21)
#define LZMA2_KEEP_WINDOW_SIZE LZMA2_UNPACK_SIZE_MAX
#define LZMA2_CHUNK_SIZE_COMPRESSED_MAX ((1 << 16) + 16)
#define PRF(x) /* x */
/* ---------- CLimitedSeqInStream ---------- */
typedef struct
{
ISeqInStream vt;
ISeqInStreamPtr realStream;
UInt64 limit;
UInt64 processed;
int finished;
} CLimitedSeqInStream;
static void LimitedSeqInStream_Init(CLimitedSeqInStream *p)
{
p->limit = (UInt64)(Int64)-1;
p->processed = 0;
p->finished = 0;
}
static SRes LimitedSeqInStream_Read(ISeqInStreamPtr pp, void *data, size_t *size)
{
Z7_CONTAINER_FROM_VTBL_TO_DECL_VAR_pp_vt_p(CLimitedSeqInStream)
size_t size2 = *size;
SRes res = SZ_OK;
if (p->limit != (UInt64)(Int64)-1)
{
const UInt64 rem = p->limit - p->processed;
if (size2 > rem)
size2 = (size_t)rem;
}
if (size2 != 0)
{
res = ISeqInStream_Read(p->realStream, data, &size2);
p->finished = (size2 == 0 ? 1 : 0);
p->processed += size2;
}
*size = size2;
return res;
}
/* ---------- CLzma2EncInt ---------- */
typedef struct
{
CLzmaEncHandle enc;
Byte propsAreSet;
Byte propsByte;
Byte needInitState;
Byte needInitProp;
UInt64 srcPos;
} CLzma2EncInt;
static SRes Lzma2EncInt_InitStream(CLzma2EncInt *p, const CLzma2EncProps *props)
{
if (!p->propsAreSet)
{
SizeT propsSize = LZMA_PROPS_SIZE;
Byte propsEncoded[LZMA_PROPS_SIZE];
RINOK(LzmaEnc_SetProps(p->enc, &props->lzmaProps))
RINOK(LzmaEnc_WriteProperties(p->enc, propsEncoded, &propsSize))
p->propsByte = propsEncoded[0];
p->propsAreSet = True;
}
return SZ_OK;
}
static void Lzma2EncInt_InitBlock(CLzma2EncInt *p)
{
p->srcPos = 0;
p->needInitState = True;
p->needInitProp = True;
}
SRes LzmaEnc_PrepareForLzma2(CLzmaEncHandle p, ISeqInStreamPtr inStream, UInt32 keepWindowSize,
ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_MemPrepare(CLzmaEncHandle p, const Byte *src, SizeT srcLen,
UInt32 keepWindowSize, ISzAllocPtr alloc, ISzAllocPtr allocBig);
SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle p, BoolInt reInit,
Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize);
const Byte *LzmaEnc_GetCurBuf(CLzmaEncHandle p);
void LzmaEnc_Finish(CLzmaEncHandle p);
void LzmaEnc_SaveState(CLzmaEncHandle p);
void LzmaEnc_RestoreState(CLzmaEncHandle p);
/*
UInt32 LzmaEnc_GetNumAvailableBytes(CLzmaEncHandle p);
*/
static SRes Lzma2EncInt_EncodeSubblock(CLzma2EncInt *p, Byte *outBuf,
size_t *packSizeRes, ISeqOutStreamPtr outStream)
{
size_t packSizeLimit = *packSizeRes;
size_t packSize = packSizeLimit;
UInt32 unpackSize = LZMA2_UNPACK_SIZE_MAX;
unsigned lzHeaderSize = 5 + (p->needInitProp ? 1 : 0);
BoolInt useCopyBlock;
SRes res;
*packSizeRes = 0;
if (packSize < lzHeaderSize)
return SZ_ERROR_OUTPUT_EOF;
packSize -= lzHeaderSize;
LzmaEnc_SaveState(p->enc);
res = LzmaEnc_CodeOneMemBlock(p->enc, p->needInitState,
outBuf + lzHeaderSize, &packSize, LZMA2_PACK_SIZE_MAX, &unpackSize);
PRF(printf("\npackSize = %7d unpackSize = %7d ", packSize, unpackSize));
if (unpackSize == 0)
return res;
if (res == SZ_OK)
useCopyBlock = (packSize + 2 >= unpackSize || packSize > (1 << 16));
else
{
if (res != SZ_ERROR_OUTPUT_EOF)
return res;
res = SZ_OK;
useCopyBlock = True;
}
if (useCopyBlock)
{
size_t destPos = 0;
PRF(printf("################# COPY "));
while (unpackSize > 0)
{
const UInt32 u = (unpackSize < LZMA2_COPY_CHUNK_SIZE) ? unpackSize : LZMA2_COPY_CHUNK_SIZE;
if (packSizeLimit - destPos < u + 3)
return SZ_ERROR_OUTPUT_EOF;
outBuf[destPos++] = (Byte)(p->srcPos == 0 ? LZMA2_CONTROL_COPY_RESET_DIC : LZMA2_CONTROL_COPY_NO_RESET);
outBuf[destPos++] = (Byte)((u - 1) >> 8);
outBuf[destPos++] = (Byte)(u - 1);
memcpy(outBuf + destPos, LzmaEnc_GetCurBuf(p->enc) - unpackSize, u);
unpackSize -= u;
destPos += u;
p->srcPos += u;
if (outStream)
{
*packSizeRes += destPos;
if (ISeqOutStream_Write(outStream, outBuf, destPos) != destPos)
return SZ_ERROR_WRITE;
destPos = 0;
}
else
*packSizeRes = destPos;
/* needInitState = True; */
}
LzmaEnc_RestoreState(p->enc);
return SZ_OK;
}
{
size_t destPos = 0;
const UInt32 u = unpackSize - 1;
const UInt32 pm = (UInt32)(packSize - 1);
const unsigned mode = (p->srcPos == 0) ? 3 : (p->needInitState ? (p->needInitProp ? 2 : 1) : 0);
PRF(printf(" "));
outBuf[destPos++] = (Byte)(LZMA2_CONTROL_LZMA | (mode << 5) | ((u >> 16) & 0x1F));
outBuf[destPos++] = (Byte)(u >> 8);
outBuf[destPos++] = (Byte)u;
outBuf[destPos++] = (Byte)(pm >> 8);
outBuf[destPos++] = (Byte)pm;
if (p->needInitProp)
outBuf[destPos++] = p->propsByte;
p->needInitProp = False;
p->needInitState = False;
destPos += packSize;
p->srcPos += unpackSize;
if (outStream)
if (ISeqOutStream_Write(outStream, outBuf, destPos) != destPos)
return SZ_ERROR_WRITE;
*packSizeRes = destPos;
return SZ_OK;
}
}
/* ---------- Lzma2 Props ---------- */
void Lzma2EncProps_Init(CLzma2EncProps *p)
{
LzmaEncProps_Init(&p->lzmaProps);
p->blockSize = LZMA2_ENC_PROPS_BLOCK_SIZE_AUTO;
p->numBlockThreads_Reduced = -1;
p->numBlockThreads_Max = -1;
p->numTotalThreads = -1;
p->numThreadGroups = 0;
}
void Lzma2EncProps_Normalize(CLzma2EncProps *p)
{
UInt64 fileSize;
int t1, t1n, t2, t2r, t3;
{
CLzmaEncProps lzmaProps = p->lzmaProps;
LzmaEncProps_Normalize(&lzmaProps);
t1n = lzmaProps.numThreads;
}
t1 = p->lzmaProps.numThreads;
t2 = p->numBlockThreads_Max;
t3 = p->numTotalThreads;
if (t2 > MTCODER_THREADS_MAX)
t2 = MTCODER_THREADS_MAX;
if (t3 <= 0)
{
if (t2 <= 0)
t2 = 1;
t3 = t1n * t2;
}
else if (t2 <= 0)
{
t2 = t3 / t1n;
if (t2 == 0)
{
t1 = 1;
t2 = t3;
}
if (t2 > MTCODER_THREADS_MAX)
t2 = MTCODER_THREADS_MAX;
}
else if (t1 <= 0)
{
t1 = t3 / t2;
if (t1 == 0)
t1 = 1;
}
else
t3 = t1n * t2;
p->lzmaProps.numThreads = t1;
t2r = t2;
fileSize = p->lzmaProps.reduceSize;
if ( p->blockSize != LZMA2_ENC_PROPS_BLOCK_SIZE_SOLID
&& p->blockSize != LZMA2_ENC_PROPS_BLOCK_SIZE_AUTO
&& (p->blockSize < fileSize || fileSize == (UInt64)(Int64)-1))
p->lzmaProps.reduceSize = p->blockSize;
LzmaEncProps_Normalize(&p->lzmaProps);
p->lzmaProps.reduceSize = fileSize;
t1 = p->lzmaProps.numThreads;
if (p->blockSize == LZMA2_ENC_PROPS_BLOCK_SIZE_SOLID)
{
t2r = t2 = 1;
t3 = t1;
}
else if (p->blockSize == LZMA2_ENC_PROPS_BLOCK_SIZE_AUTO && t2 <= 1)
{
/* if there is no block multi-threading, we use SOLID block */
p->blockSize = LZMA2_ENC_PROPS_BLOCK_SIZE_SOLID;
}
else
{
if (p->blockSize == LZMA2_ENC_PROPS_BLOCK_SIZE_AUTO)
{
const UInt32 kMinSize = (UInt32)1 << 20;
const UInt32 kMaxSize = (UInt32)1 << 28;
const UInt32 dictSize = p->lzmaProps.dictSize;
UInt64 blockSize = (UInt64)dictSize << 2;
if (blockSize < kMinSize) blockSize = kMinSize;
if (blockSize > kMaxSize) blockSize = kMaxSize;
if (blockSize < dictSize) blockSize = dictSize;
blockSize += (kMinSize - 1);
blockSize &= ~(UInt64)(kMinSize - 1);
p->blockSize = blockSize;
}
if (t2 > 1 && fileSize != (UInt64)(Int64)-1)
{
UInt64 numBlocks = fileSize / p->blockSize;
if (numBlocks * p->blockSize != fileSize)
numBlocks++;
if (numBlocks < (unsigned)t2)
{
t2r = (int)numBlocks;
if (t2r == 0)
t2r = 1;
t3 = t1 * t2r;
}
}
}
p->numBlockThreads_Max = t2;
p->numBlockThreads_Reduced = t2r;
p->numTotalThreads = t3;
}
static SRes Progress(ICompressProgressPtr p, UInt64 inSize, UInt64 outSize)
{
return (p && ICompressProgress_Progress(p, inSize, outSize) != SZ_OK) ? SZ_ERROR_PROGRESS : SZ_OK;
}
/* ---------- Lzma2 ---------- */
struct CLzma2Enc
{
Byte propEncoded;
CLzma2EncProps props;
UInt64 expectedDataSize;
Byte *tempBufLzma;
ISzAllocPtr alloc;
ISzAllocPtr allocBig;
CLzma2EncInt coders[MTCODER_THREADS_MAX];
#ifndef Z7_ST
ISeqOutStreamPtr outStream;
Byte *outBuf;
size_t outBuf_Rem; /* remainder in outBuf */
size_t outBufSize; /* size of allocated outBufs[i] */
size_t outBufsDataSizes[MTCODER_BLOCKS_MAX];
BoolInt mtCoder_WasConstructed;
CMtCoder mtCoder;
Byte *outBufs[MTCODER_BLOCKS_MAX];
#endif
};
CLzma2EncHandle Lzma2Enc_Create(ISzAllocPtr alloc, ISzAllocPtr allocBig)
{
CLzma2Enc *p = (CLzma2Enc *)ISzAlloc_Alloc(alloc, sizeof(CLzma2Enc));
if (!p)
return NULL;
Lzma2EncProps_Init(&p->props);
Lzma2EncProps_Normalize(&p->props);
p->expectedDataSize = (UInt64)(Int64)-1;
p->tempBufLzma = NULL;
p->alloc = alloc;
p->allocBig = allocBig;
{
unsigned i;
for (i = 0; i < MTCODER_THREADS_MAX; i++)
p->coders[i].enc = NULL;
}
#ifndef Z7_ST
p->mtCoder_WasConstructed = False;
{
unsigned i;
for (i = 0; i < MTCODER_BLOCKS_MAX; i++)
p->outBufs[i] = NULL;
p->outBufSize = 0;
}
#endif
return (CLzma2EncHandle)p;
}
#ifndef Z7_ST
static void Lzma2Enc_FreeOutBufs(CLzma2Enc *p)
{
unsigned i;
for (i = 0; i < MTCODER_BLOCKS_MAX; i++)
if (p->outBufs[i])
{
ISzAlloc_Free(p->alloc, p->outBufs[i]);
p->outBufs[i] = NULL;
}
p->outBufSize = 0;
}
#endif
// #define GET_CLzma2Enc_p CLzma2Enc *p = (CLzma2Enc *)(void *)p;
void Lzma2Enc_Destroy(CLzma2EncHandle p)
{
// GET_CLzma2Enc_p
unsigned i;
for (i = 0; i < MTCODER_THREADS_MAX; i++)
{
CLzma2EncInt *t = &p->coders[i];
if (t->enc)
{
LzmaEnc_Destroy(t->enc, p->alloc, p->allocBig);
t->enc = NULL;
}
}
#ifndef Z7_ST
if (p->mtCoder_WasConstructed)
{
MtCoder_Destruct(&p->mtCoder);
p->mtCoder_WasConstructed = False;
}
Lzma2Enc_FreeOutBufs(p);
#endif
ISzAlloc_Free(p->alloc, p->tempBufLzma);
p->tempBufLzma = NULL;
ISzAlloc_Free(p->alloc, p);
}
SRes Lzma2Enc_SetProps(CLzma2EncHandle p, const CLzma2EncProps *props)
{
// GET_CLzma2Enc_p
CLzmaEncProps lzmaProps = props->lzmaProps;
LzmaEncProps_Normalize(&lzmaProps);
if (lzmaProps.lc + lzmaProps.lp > LZMA2_LCLP_MAX)
return SZ_ERROR_PARAM;
p->props = *props;
Lzma2EncProps_Normalize(&p->props);
return SZ_OK;
}
void Lzma2Enc_SetDataSize(CLzma2EncHandle p, UInt64 expectedDataSiize)
{
// GET_CLzma2Enc_p
p->expectedDataSize = expectedDataSiize;
}
Byte Lzma2Enc_WriteProperties(CLzma2EncHandle p)
{
// GET_CLzma2Enc_p
unsigned i;
UInt32 dicSize = LzmaEncProps_GetDictSize(&p->props.lzmaProps);
for (i = 0; i < 40; i++)
if (dicSize <= LZMA2_DIC_SIZE_FROM_PROP(i))
break;
return (Byte)i;
}
static SRes Lzma2Enc_EncodeMt1(
CLzma2Enc *me,
CLzma2EncInt *p,
ISeqOutStreamPtr outStream,
Byte *outBuf, size_t *outBufSize,
ISeqInStreamPtr inStream,
const Byte *inData, size_t inDataSize,
int finished,
ICompressProgressPtr progress)
{
UInt64 unpackTotal = 0;
UInt64 packTotal = 0;
size_t outLim = 0;
CLimitedSeqInStream limitedInStream;
if (outBuf)
{
outLim = *outBufSize;
*outBufSize = 0;
}
if (!p->enc)
{
p->propsAreSet = False;
p->enc = LzmaEnc_Create(me->alloc);
if (!p->enc)
return SZ_ERROR_MEM;
}
limitedInStream.realStream = inStream;
if (inStream)
{
limitedInStream.vt.Read = LimitedSeqInStream_Read;
}
if (!outBuf)
{
// outStream version works only in one thread. So we use CLzma2Enc::tempBufLzma
if (!me->tempBufLzma)
{
me->tempBufLzma = (Byte *)ISzAlloc_Alloc(me->alloc, LZMA2_CHUNK_SIZE_COMPRESSED_MAX);
if (!me->tempBufLzma)
return SZ_ERROR_MEM;
}
}
RINOK(Lzma2EncInt_InitStream(p, &me->props))
for (;;)
{
SRes res = SZ_OK;
SizeT inSizeCur = 0;
Lzma2EncInt_InitBlock(p);
LimitedSeqInStream_Init(&limitedInStream);
limitedInStream.limit = me->props.blockSize;
if (inStream)
{
UInt64 expected = (UInt64)(Int64)-1;
// inStream version works only in one thread. So we use CLzma2Enc::expectedDataSize
if (me->expectedDataSize != (UInt64)(Int64)-1
&& me->expectedDataSize >= unpackTotal)
expected = me->expectedDataSize - unpackTotal;
if (me->props.blockSize != LZMA2_ENC_PROPS_BLOCK_SIZE_SOLID
&& expected > me->props.blockSize)
expected = (size_t)me->props.blockSize;
LzmaEnc_SetDataSize(p->enc, expected);
RINOK(LzmaEnc_PrepareForLzma2(p->enc,
&limitedInStream.vt,
LZMA2_KEEP_WINDOW_SIZE,
me->alloc,
me->allocBig))
}
else
{
inSizeCur = (SizeT)(inDataSize - (size_t)unpackTotal);
if (me->props.blockSize != LZMA2_ENC_PROPS_BLOCK_SIZE_SOLID
&& inSizeCur > me->props.blockSize)
inSizeCur = (SizeT)(size_t)me->props.blockSize;
// LzmaEnc_SetDataSize(p->enc, inSizeCur);
RINOK(LzmaEnc_MemPrepare(p->enc,
inData + (size_t)unpackTotal, inSizeCur,
LZMA2_KEEP_WINDOW_SIZE,
me->alloc,
me->allocBig))
}
for (;;)
{
size_t packSize = LZMA2_CHUNK_SIZE_COMPRESSED_MAX;
if (outBuf)
packSize = outLim - (size_t)packTotal;
res = Lzma2EncInt_EncodeSubblock(p,
outBuf ? outBuf + (size_t)packTotal : me->tempBufLzma, &packSize,
outBuf ? NULL : outStream);
if (res != SZ_OK)
break;
packTotal += packSize;
if (outBuf)
*outBufSize = (size_t)packTotal;
res = Progress(progress, unpackTotal + p->srcPos, packTotal);
if (res != SZ_OK)
break;
/*
if (LzmaEnc_GetNumAvailableBytes(p->enc) == 0)
break;
*/
if (packSize == 0)
break;
}
LzmaEnc_Finish(p->enc);
unpackTotal += p->srcPos;
RINOK(res)
if (p->srcPos != (inStream ? limitedInStream.processed : inSizeCur))
return SZ_ERROR_FAIL;
if (inStream ? limitedInStream.finished : (unpackTotal == inDataSize))
{
if (finished)
{
if (outBuf)
{
const size_t destPos = *outBufSize;
if (destPos >= outLim)
return SZ_ERROR_OUTPUT_EOF;
outBuf[destPos] = LZMA2_CONTROL_EOF; // 0
*outBufSize = destPos + 1;
}
else
{
const Byte b = LZMA2_CONTROL_EOF; // 0;
if (ISeqOutStream_Write(outStream, &b, 1) != 1)
return SZ_ERROR_WRITE;
}
}
return SZ_OK;
}
}
}
#ifndef Z7_ST
static SRes Lzma2Enc_MtCallback_Code(void *p, unsigned coderIndex, unsigned outBufIndex,
const Byte *src, size_t srcSize, int finished)
{
CLzma2Enc *me = (CLzma2Enc *)p;
size_t destSize = me->outBufSize;
SRes res;
CMtProgressThunk progressThunk;
Byte *dest = me->outBufs[outBufIndex];
me->outBufsDataSizes[outBufIndex] = 0;
if (!dest)
{
dest = (Byte *)ISzAlloc_Alloc(me->alloc, me->outBufSize);
if (!dest)
return SZ_ERROR_MEM;
me->outBufs[outBufIndex] = dest;
}
MtProgressThunk_CreateVTable(&progressThunk);
progressThunk.mtProgress = &me->mtCoder.mtProgress;
progressThunk.inSize = 0;
progressThunk.outSize = 0;
res = Lzma2Enc_EncodeMt1(me,
&me->coders[coderIndex],
NULL, dest, &destSize,
NULL, src, srcSize,
finished,
&progressThunk.vt);
me->outBufsDataSizes[outBufIndex] = destSize;
return res;
}
static SRes Lzma2Enc_MtCallback_Write(void *p, unsigned outBufIndex)
{
CLzma2Enc *me = (CLzma2Enc *)p;
size_t size = me->outBufsDataSizes[outBufIndex];
const Byte *data = me->outBufs[outBufIndex];
if (me->outStream)
return ISeqOutStream_Write(me->outStream, data, size) == size ? SZ_OK : SZ_ERROR_WRITE;
if (size > me->outBuf_Rem)
return SZ_ERROR_OUTPUT_EOF;
memcpy(me->outBuf, data, size);
me->outBuf_Rem -= size;
me->outBuf += size;
return SZ_OK;
}
#endif
SRes Lzma2Enc_Encode2(CLzma2EncHandle p,
ISeqOutStreamPtr outStream,
Byte *outBuf, size_t *outBufSize,
ISeqInStreamPtr inStream,
const Byte *inData, size_t inDataSize,
ICompressProgressPtr progress)
{
// GET_CLzma2Enc_p
if (inStream && inData)
return SZ_ERROR_PARAM;
if (outStream && outBuf)
return SZ_ERROR_PARAM;
{
unsigned i;
for (i = 0; i < MTCODER_THREADS_MAX; i++)
p->coders[i].propsAreSet = False;
}
#ifndef Z7_ST
if (p->props.numBlockThreads_Reduced > 1)
{
IMtCoderCallback2 vt;
if (!p->mtCoder_WasConstructed)
{
p->mtCoder_WasConstructed = True;
MtCoder_Construct(&p->mtCoder);
}
vt.Code = Lzma2Enc_MtCallback_Code;
vt.Write = Lzma2Enc_MtCallback_Write;
p->outStream = outStream;
p->outBuf = NULL;
p->outBuf_Rem = 0;
if (!outStream)
{
p->outBuf = outBuf;
p->outBuf_Rem = *outBufSize;
*outBufSize = 0;
}
p->mtCoder.allocBig = p->allocBig;
p->mtCoder.progress = progress;
p->mtCoder.inStream = inStream;
p->mtCoder.inData = inData;
p->mtCoder.inDataSize = inDataSize;
p->mtCoder.mtCallback = &vt;
p->mtCoder.mtCallbackObject = p;
p->mtCoder.blockSize = (size_t)p->props.blockSize;
if (p->mtCoder.blockSize != p->props.blockSize)
return SZ_ERROR_PARAM; /* SZ_ERROR_MEM */
{
const size_t destBlockSize = p->mtCoder.blockSize + (p->mtCoder.blockSize >> 10) + 16;
if (destBlockSize < p->mtCoder.blockSize)
return SZ_ERROR_PARAM;
if (p->outBufSize != destBlockSize)
Lzma2Enc_FreeOutBufs(p);
p->outBufSize = destBlockSize;
}
p->mtCoder.numThreadsMax = (unsigned)p->props.numBlockThreads_Max;
p->mtCoder.numThreadGroups = p->props.numThreadGroups;
p->mtCoder.expectedDataSize = p->expectedDataSize;
{
const SRes res = MtCoder_Code(&p->mtCoder);
if (!outStream)
*outBufSize = (size_t)(p->outBuf - outBuf);
return res;
}
}
#endif
return Lzma2Enc_EncodeMt1(p,
&p->coders[0],
outStream, outBuf, outBufSize,
inStream, inData, inDataSize,
True, /* finished */
progress);
}
#undef PRF