Commit 10b32404 authored by Ilya.Kirillov's avatar Ilya.Kirillov Committed by Alexander Trofimov

Добавлены исходники чтения и записи Jpeg2000, сделано, если формат явно...

Добавлены исходники чтения и записи Jpeg2000, сделано, если формат явно указан, то чтение идет через данную библиотеку.

git-svn-id: svn://fileserver/activex/AVS/Sources/TeamlabOffice/trunk/ServerComponents@62514 954022d7-b5bf-4e40-9824-e11837661b57
parent f993d2a6
......@@ -7269,6 +7269,7 @@ DesktopEditor/mac_build/raster/raster.xcodeproj/xcuserdata svnc_tsvn_003alogmins
DesktopEditor/mac_build/raster/raster.xcodeproj/xcuserdata/alexey.musinov.xcuserdatad svnc_tsvn_003alogminsize=5
DesktopEditor/mac_build/raster/raster.xcodeproj/xcuserdata/alexey.musinov.xcuserdatad/xcschemes svnc_tsvn_003alogminsize=5
DesktopEditor/raster svn_global_002dignores=*%0A*.ncb%0A*.user%0A
DesktopEditor/raster/Jp2 svnc_tsvn_003alogminsize=5
DesktopEditor/raster/Metafile svnc_tsvn_003alogminsize=5 svn_global_002dignores
DesktopEditor/raster/Metafile/Common svnc_tsvn_003alogminsize=5
DesktopEditor/raster/Metafile/Emf svnc_tsvn_003alogminsize=5
#include "BgraFrame.h"
#include "../common/File.h"
#include "../cximage/CxImage/ximage.h"
#include "Jp2/J2kFile.h"
bool CBgraFrame::OpenFile(const std::wstring& strFileName, unsigned int nFileType)
{
if (CXIMAGE_FORMAT_JP2 == nFileType)
{
Jpeg2000::CJ2kFile oJ2;
return oJ2.Open(this, strFileName, std::wstring(L""));
}
else
{
NSFile::CFileBinary oFile;
if (!oFile.OpenFile(strFileName))
return false;
CxImage img;
if( !img.Decode( oFile.GetFileNative(), nFileType ) )
if (!img.Decode(oFile.GetFileNative(), nFileType))
return false;
CxImageToMediaFrame( img );
CxImageToMediaFrame(img);
return true;
}
}
bool CBgraFrame::SaveFile(const std::wstring& strFileName, unsigned int nFileType)
......@@ -35,7 +44,7 @@ bool CBgraFrame::SaveFile(const std::wstring& strFileName, unsigned int nFileTyp
if (!img.CreateFromArray(m_pData, m_lWidth, m_lHeight, lBitsPerPixel * 8, lStride, (m_lStride >= 0) ? true : false))
return false;
if (!img.Encode( oFile.GetFileNative(), nFileType ))
if (!img.Encode(oFile.GetFileNative(), nFileType))
return false;
oFile.CloseFile();
......
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#pragma once
#include "Types.h"
#include "Utils.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
// Image
//-------------------------------------------------------------------------------------------------------------------------------
Image* Image_CreateEmpty()
{
Image *pImage = (Image*)Malloc(sizeof(Image));
return pImage;
}
void Image_Destroy(Image *pImage)
{
if (pImage)
{
if (pImage->pComponents)
{
for (int nIndex = 0; nIndex < pImage->nCsiz; nIndex++)
{
ImageComponent *pImageComp = &pImage->pComponents[nIndex];
Free(pImageComp->pData);
}
Free(pImage->pComponents);
}
Free(pImage);
}
}
Image* Image_Create(int nComponentsCount, ImageComponentParams *pCompParams, ColorSpace eColorSpace)
{
Image *pImage = NULL;
pImage = (Image*)Malloc(sizeof(Image));
if (pImage)
{
pImage->eColorSpace = eColorSpace;
pImage->nCsiz = nComponentsCount;
//
pImage->pComponents = (ImageComponent*)Malloc(pImage->nCsiz * sizeof(ImageComponent));
if (!pImage->pComponents)
{
Image_Destroy(pImage);
return NULL;
}
for (int nCurComponent = 0; nCurComponent < nComponentsCount; nCurComponent++)
{
ImageComponent *pComponent = &pImage->pComponents[nCurComponent];
pComponent->nXRsiz = pCompParams[nCurComponent].nXRsiz;
pComponent->nYRsiz = pCompParams[nCurComponent].nYRsiz;
pComponent->nWidth = pCompParams[nCurComponent].nWidth;
pComponent->nHeight = pCompParams[nCurComponent].nHeight;
pComponent->nXOsiz = pCompParams[nCurComponent].nXoffset;
pComponent->nYOsiz = pCompParams[nCurComponent].nYoffset;
pComponent->nPrecision = pCompParams[nCurComponent].nPrecision;
pComponent->nBPP = pCompParams[nCurComponent].nBPP;
pComponent->nSigned = pCompParams[nCurComponent].nSigned;
pComponent->pData = (int*)Malloc(pComponent->nWidth * pComponent->nHeight * sizeof(int));
if (!pComponent->pData)
{
Image_Destroy(pImage);
return NULL;
}
}
}
else
{
// TO DO:
}
return pImage;
}
}
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#pragma once
#include "Types.h"
#include "ArithmeticCoder.h"
#include "DWT.h"
#include "JpgEvent.h"
#include "Image.h"
#include "J2k.h"
#include "Jp2.h"
#include "Jpt.h"
#include "Mj2.h"
#include "PacketIterator.h"
#include "Raw.h"
#include "Reader.h"
#include "TagTree.h"
#include "Tile.h"
#include "Tier1.h"
#include "Tier2.h"
#include "Utils.h"
#include <string>
#include "../../common/File.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
// Jpeg2000 -> Image
//-------------------------------------------------------------------------------------------------------------------------------
Image* Jp2ToImage(const std::wstring& wsFileName, DecoderParams* pDecoderParams)
{
DInfo *pDInfo = (DInfo*)Malloc(sizeof(DInfo));
if (!pDInfo)
return NULL;
pDInfo->bIsDecompressor = true;
pDInfo->pJp2 = (void*)Jp2_CreateDecompress((PCommon)pDInfo);
if (!pDInfo->pJp2)
{
Free(pDInfo);
return NULL;
}
pDInfo->pJ2k = NULL;
pDInfo->eCodecFormat = codecJP2;
Jp2_SetupDecoder((Jp2Stream*)pDInfo->pJp2, pDecoderParams);
if (JP2_ERROR_NO_ERROR != pDInfo->nErrorCode)
{
Jp2_DestroyDecompress((Jp2Stream*)pDInfo->pJp2);
Free(pDInfo);
return NULL;
}
CReader *pStream = (CReader *)new CReaderFile(wsFileName, 1);
if (!pStream)
{
Jp2_DestroyDecompress((Jp2Stream*)pDInfo->pJp2);
Free(pDInfo);
return NULL;
}
Image *pImage = Jp2_Decode((Jp2Stream*)pDInfo->pJp2, pStream); // pImage = NULL
delete (pStream);
Jp2_DestroyDecompress((Jp2Stream*)pDInfo->pJp2);
Free(pDInfo);
return pImage;
}
Image* J2kToImage(const std::wstring& wsFileName, DecoderParams* pDecoderParams)
{
DInfo *pDInfo = (DInfo*)Malloc(sizeof(DInfo));
if (!pDInfo)
return NULL;
pDInfo->bIsDecompressor = true;
pDInfo->pJ2k = (void*)J2k_CreateDecompress((PCommon)pDInfo);
if (!pDInfo->pJ2k)
{
Free(pDInfo);
return NULL;
}
pDInfo->pJp2 = NULL;
pDInfo->eCodecFormat = codecJ2K;
J2k_SetupDecoder((J2kCodestream*)pDInfo->pJ2k, pDecoderParams);
if (JP2_ERROR_NO_ERROR != pDInfo->nErrorCode)
{
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return NULL;
}
CReader *pStream = (CReader *)new CReaderFile(wsFileName, 1);
if (!pStream)
{
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return NULL;
}
Image *pImage = J2k_Decode((J2kCodestream*)pDInfo->pJ2k, pStream); // pImage = NULL
delete (pStream);
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return pImage;
}
Image* JptToImage(const std::wstring& wsFileName, DecoderParams* pDecoderParams)
{
DInfo *pDInfo = (DInfo*)Malloc(sizeof(DInfo));
if (!pDInfo)
return NULL;
pDInfo->bIsDecompressor = true;
pDInfo->pJ2k = (void*)J2k_CreateDecompress((PCommon)pDInfo);
if (!pDInfo->pJ2k)
{
Free(pDInfo);
return NULL;
}
pDInfo->pJp2 = NULL;
pDInfo->eCodecFormat = codecJPT;
J2k_SetupDecoder((J2kCodestream*)pDInfo->pJ2k, pDecoderParams);
if (JP2_ERROR_NO_ERROR != pDInfo->nErrorCode)
{
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return NULL;
}
CReader *pStream = (CReader *)new CReaderFile(wsFileName, 1);
if (!pStream)
{
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return NULL;
}
Image *pImage = J2k_DecodeJptStream((J2kCodestream*)pDInfo->pJ2k, pStream); // pImage = NULL
delete (pStream);
J2k_DestroyDecompress((J2kCodestream*)pDInfo->pJ2k);
Free(pDInfo);
return NULL;
}
Image* Mj2ToImage(const std::wstring& wsFileName, DecoderParams* pDecoderParams)
{
DInfo *pDInfo = (DInfo*)Malloc(sizeof(DInfo));
if (!pDInfo)
return NULL;
pDInfo->bIsDecompressor = true;
pDInfo->pMj2 = (void*)Mj2_CreateDecompress((PCommon)pDInfo);
if (!pDInfo->pMj2)
{
Free(pDInfo);
return NULL;
}
pDInfo->pJ2k = ((Mj2_Movie*)pDInfo->pMj2)->pJ2k;
pDInfo->eCodecFormat = codecMj2;
Mj2_SetupDecoder((Mj2_Movie*)pDInfo->pMj2, pDecoderParams);
if (JP2_ERROR_NO_ERROR != pDInfo->nErrorCode)
{
Mj2_DestroyDecompress((Mj2_Movie*)pDInfo->pMj2);
Free(pDInfo);
return NULL;
}
CReader *pStream = (CReader *)new CReaderFile(wsFileName, 1);
if (!pStream)
{
Mj2_DestroyDecompress((Mj2_Movie*)pDInfo->pMj2);
Free(pDInfo);
return NULL;
}
Image *pImage = Mj2_Decode((Mj2_Movie*)pDInfo->pMj2, pStream); // pImage = NULL
delete (pStream);
Mj2_DestroyDecompress((Mj2_Movie*)pDInfo->pMj2);
Free(pDInfo);
return pImage;
}
//-------------------------------------------------------------------------------------------------------------------------------
// Image -> Jpeg2000
//-------------------------------------------------------------------------------------------------------------------------------
bool ImageToJ2k(Image *pImage, const std::wstring& wsFilePath, EncoderParams* pEncoderParams)
{
int nCodeStreamLen = 0;
CReader *pStream = NULL;
CInfo *pCInfo = (CInfo*)Malloc(sizeof(CInfo));
if (!pCInfo)
return false;
pCInfo->pJ2k = (void*)J2k_CreateCompress((PCommon)pCInfo);
if (!pCInfo->pJ2k)
{
Free(pCInfo);
return false;
}
pCInfo->pJp2 = NULL;
pCInfo->eCodecFormat = codecJ2K;
pCInfo->bIsDecompressor = false;
J2k_SetupEncoder((J2kCodestream*)pCInfo->pJ2k, pEncoderParams, pImage);
if (JP2_ERROR_NO_ERROR != pCInfo->nErrorCode)
{
J2k_DestroyCompress((J2kCodestream*)pCInfo->pJ2k);
Free(pCInfo);
return false;
}
pStream = (CReader *)new CReaderFile(wsFilePath, 0);
if (!pStream)
{
J2k_DestroyCompress((J2kCodestream*)pCInfo->pJ2k);
Free(pCInfo);
return false;
}
bool bSuccess = J2k_Encode((J2kCodestream*)pCInfo->pJ2k, pStream, pImage, NULL);
if (!bSuccess)
{
delete (pStream);
J2k_DestroyCompress((J2kCodestream*)pCInfo->pJ2k);
Free(pCInfo);
return false;
}
nCodeStreamLen = pStream->Tell();
//if (!oFile.CreateFileW(wsFilePath))
//{
// delete (pStream);
// J2k_DestroyCompress((J2kCodestream*)pCInfo->pJ2k);
// Free(pCInfo);
// return false;
//}
//FILE* pFile = oFile.GetFileNative();
//fwrite(pStream->GetOwner(), 1, nCodeStreamLen, pFile);
//fclose(pFile);
delete (pStream);
J2k_DestroyCompress((J2kCodestream*)pCInfo->pJ2k);
Free(pCInfo);
return true;
}
bool ImageToJ2p(Image *pImage, const std::wstring& wsFilePath, EncoderParams* pEncoderParams)
{
int nCodeStreamLen = 0;
CReader *pStream = NULL;
CInfo *pCInfo = (CInfo*)Malloc(sizeof(CInfo));
if (!pCInfo)
return false;
pCInfo->pJp2 = (void*)Jp2_CreateCompress((PCommon)pCInfo);
if (!pCInfo->pJp2)
{
Free(pCInfo);
return false;
}
pCInfo->pJ2k = NULL;
pCInfo->eCodecFormat = codecJP2;
pCInfo->bIsDecompressor = false;
Jp2_SetupEncoder((Jp2Stream*)pCInfo->pJp2, pEncoderParams, pImage);
if (JP2_ERROR_NO_ERROR != pCInfo->nErrorCode)
{
Jp2_DestroyCompress((Jp2Stream*)pCInfo->pJp2);
Free(pCInfo);
return false;
}
pStream =(CReader *) new CReaderStream(NULL, 0);
if (!pStream)
{
Jp2_DestroyCompress((Jp2Stream*)pCInfo->pJp2);
Free(pCInfo);
return false;
}
bool bSuccess = Jp2_Encode((Jp2Stream*)pCInfo->pJp2, pStream, pImage, NULL);
if (!bSuccess)
{
delete (pStream);
Jp2_DestroyCompress((Jp2Stream*)pCInfo->pJp2);
Free(pCInfo);
return false;
}
nCodeStreamLen = pStream->Tell();
NSFile::CFileBinary oFile;
if (!oFile.CreateFileW(wsFilePath))
{
delete (pStream);
Jp2_DestroyCompress((Jp2Stream*)pCInfo->pJp2);
Free(pCInfo);
return false;
}
FILE* pFile = oFile.GetFileNative();
fwrite(pStream->GetOwner(), 1, nCodeStreamLen, pFile);
fclose(pFile);
delete (pStream);
Jp2_DestroyCompress((Jp2Stream*)pCInfo->pJp2);
Free(pCInfo);
return true;
}
}
\ No newline at end of file
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#pragma once
#include "Types.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
// Events
//-------------------------------------------------------------------------------------------------------------------------------
bool Event_Message(int nEventType, const char *sFormatString, ...)
{
if (sFormatString != NULL)
{
char sMessage[MSG_SIZE]={};
va_list sArg;
memset(sMessage, 0, MSG_SIZE);
va_start(sArg, sFormatString);
int nLength = (strlen(sFormatString) > MSG_SIZE) ? MSG_SIZE : strlen(sFormatString);
vsprintf(sMessage, sFormatString, sArg);
va_end(sArg);
// TODO: print sMessage/*, pCodecInfo->pClientData*/
}
return true;
}
}
\ No newline at end of file
#pragma once
#include "Types.h"
#include "Reader.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
//
//-------------------------------------------------------------------------------------------------------------------------------
static unsigned int JPT_ReadVBASInfo(CReader *pStream, unsigned int nValue)
{
unsigned char nElement = pStream->Read(1);
while ((nElement >> 7) == 1)
{
nValue = (nValue << 7);
nValue |= (nElement & 0x7f);
nElement = pStream->Read(1);
}
nValue = (nValue << 7);
nValue |= (nElement & 0x7f);
return nValue;
}
static void JPT_ReInitMessageHeader(JPTMessageHeader *pHeader)
{
pHeader->nId = 0;
pHeader->nLastByte = 0;
pHeader->nMessageOffset = 0;
pHeader->nMessageLength = 0;
}
//-------------------------------------------------------------------------------------------------------------------------------
//
//-------------------------------------------------------------------------------------------------------------------------------
void JPT_InitMessageHeader(JPTMessageHeader *pHeader)
{
pHeader->nId = 0;
pHeader->nLastByte = 0;
pHeader->nClassId = 0;
pHeader->nCSnId = 0;
pHeader->nMessageOffset = 0;
pHeader->nMessageLength = 0;
pHeader->nLayerNB = 0;
}
void JPT_ReadMessageHeader(PCommon pInfo, CReader *pStream, JPTMessageHeader *pHeader)
{
JPT_ReInitMessageHeader(pHeader);
// VBAS : Bin-ID
unsigned char nElement = pStream->Read(1);
// See for Class and CSn
unsigned char nClass = 0, nCSn = 0;
switch ((nElement >> 5) & 0x03)
{
case 0:
Event_Message(EVT_ERROR, "Forbidden value encounter in message header !!\n");
break;
case 1:
nClass = 0;
nCSn = 0;
break;
case 2:
nClass = 1;
nCSn = 0;
break;
case 3:
nClass = 1;
nCSn = 1;
break;
default:
break;
}
// [A.2.1 ISO/IEC FCD 15444-9]
if (((nElement >> 4) & 0x01) == 1)
pHeader->nLastByte = 1;
// In-class identifier
pHeader->nId |= (nElement & 0x0f);
if ((nElement >> 7) == 1)
pHeader->nId = JPT_ReadVBASInfo(pStream, pHeader->nId);
// VBAS : Class
if (nClass == 1)
{
pHeader->nClassId = 0;
pHeader->nClassId = JPT_ReadVBASInfo(pStream, pHeader->nClassId);
}
// VBAS : CSn
if (nCSn == 1)
{
pHeader->nCSnId = 0;
pHeader->nCSnId = JPT_ReadVBASInfo(pStream, pHeader->nCSnId);
}
// VBAS : Msg_offset
pHeader->nMessageOffset = JPT_ReadVBASInfo(pStream, pHeader->nMessageOffset);
// VBAS : Msg_length
pHeader->nMessageLength = JPT_ReadVBASInfo(pStream, pHeader->nMessageLength);
// VBAS : Aux
if ((pHeader->nClassId & 0x01) == 1)
{
pHeader->nLayerNB = 0;
pHeader->nLayerNB = JPT_ReadVBASInfo(pStream, pHeader->nLayerNB);
}
}
}
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#pragma once
#include "Types.h"
#include "Utils.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
Raw* Raw_Create()
{
Raw *pRaw = (Raw*)Malloc(sizeof(Raw));
return pRaw;
}
void Raw_Destroy(Raw *pRaw)
{
Free(pRaw);
}
int Raw_BytesCount(Raw *pRaw)
{
return pRaw->pBufferPointer - pRaw->pBufferStart;
}
void Raw_InitDecoder(Raw *pRaw, unsigned char *pBuffer, int nLen)
{
pRaw->pBufferStart = pBuffer;
pRaw->nMaxLen = nLen;
pRaw->nLen = 0;
pRaw->nBuffer = 0;
pRaw->nFreeBitsCount = 0;
}
int Raw_Decode(Raw *pRaw)
{
if (pRaw->nFreeBitsCount == 0)
{
pRaw->nFreeBitsCount = 8;
if (pRaw->nLen == pRaw->nMaxLen)
{
pRaw->nBuffer = 0xff;
}
else
{
if (pRaw->nBuffer == 0xff)
{
pRaw->nFreeBitsCount = 7;
}
pRaw->nBuffer = *(pRaw->pBufferStart + pRaw->nLen);
pRaw->nLen++;
}
}
pRaw->nFreeBitsCount--;
int nResult = (pRaw->nBuffer >> pRaw->nFreeBitsCount) & 0x01;
return nResult;
}
}
\ No newline at end of file
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#pragma once
#include "../../common/File.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
// Byte input-output (Stream IO)
//-------------------------------------------------------------------------------------------------------------------------------
#define STREAM_READ 0x0001 //
#define STREAM_WRITE 0x0002 //
typedef struct TByteIO
{
int nMode; // ( STREAM_READ OPJ_STREAM_WRITE )
unsigned char *pBuffer; //
int nLength; //
unsigned char *pStart; //
unsigned char *pEnd; //
unsigned char *pCurPos; //
} ByteIO;
class CReader
{
public:
virtual ~CReader(void){}
virtual bool Open(void* sStream, int nSizeStream){ return false; }
virtual void Close(){}
virtual void Read(BYTE* pData, int nSize){}
virtual unsigned int Read(int nSize){ return 0; }
virtual void Skip(int nSize){}
virtual void Seek(int nPosition){}
virtual unsigned int Write(unsigned int nValue, int nLen){ return 0; }
virtual int Tell(){ return 0; }
virtual int GetLeftSize(){ return 0; }
virtual void* GetOwner(){ return NULL; }
};
class CReaderStream : CReader
{
public:
CReaderStream(void);
CReaderStream(void* sStream, int nSizeStream);
virtual ~CReaderStream(void);
bool Open(void* sStream, int nSizeStream);
void Close();
void Read(BYTE* pData, int nSize);
unsigned int Read(int nSize);
void Skip(int nSize);
void Seek(int nPosition);
unsigned int Write(unsigned int nValue, int nLen);
int Tell();
int GetLeftSize();
void* GetOwner();
protected:
ByteIO* m_pStream;
int m_nPosition;
int m_nSkiped;
int m_nSize;
};
class CReaderFile : CReader
{
public:
CReaderFile(void);
CReaderFile(const std::wstring& wsFileName, long lMode);
virtual ~CReaderFile(void);
bool Open(const std::wstring& wsFileName, int nSizeStream);
void Close();
void Read(BYTE* pData, int nSize);
unsigned int Read(int nSize);
void Skip(int nSize);
void Seek(int nPosition);
unsigned int Write(unsigned int nValue, int nLen);
int Tell();
int GetLeftSize();
void* GetOwner();
protected:
NSFile::CFileBinary m_oFile;
FILE* m_pFile;
int m_nPosition;
int m_nSkiped;
int m_nSize;
};
}
\ No newline at end of file
#pragma once
#include "Types.h"
#include "JpgEvent.h"
#include "Utils.h"
namespace Jpeg2000
{
//-------------------------------------------------------------------------------------------------------------------------------
// Bit input-output stream (BitIO)
//-------------------------------------------------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------------------------------------------------
//
//-------------------------------------------------------------------------------------------------------------------------------
static int BitIO_ByteOut(BitIO *pBIO)
{
pBIO->nBuffer = (pBIO->nBuffer << 8) & 0xffff;
pBIO->nValidBitsCount = pBIO->nBuffer == 0xff00 ? 7 : 8;
if (pBIO->pCurPos >= pBIO->pEnd)
{
return 1;
}
*pBIO->pCurPos++ = pBIO->nBuffer >> 8;
return 0;
}
static int BitIO_ByteIn(BitIO *pBIO)
{
pBIO->nBuffer = (pBIO->nBuffer << 8) & 0xffff;
pBIO->nValidBitsCount = pBIO->nBuffer == 0xff00 ? 7 : 8;
if (pBIO->pCurPos >= pBIO->pEnd)
{
return 1;
}
pBIO->nBuffer |= *pBIO->pCurPos++;
return 0;
}
static void BitIO_PutBit(BitIO *pBIO, int nBit)
{
if (0 == pBIO->nValidBitsCount)
{
BitIO_ByteOut(pBIO);
}
pBIO->nValidBitsCount--;
pBIO->nBuffer |= nBit << pBIO->nValidBitsCount;
}
static int BitIO_GetBit(BitIO *pBIO)
{
if (0 == pBIO->nValidBitsCount)
{
BitIO_ByteIn(pBIO);
}
pBIO->nValidBitsCount--;
return (pBIO->nBuffer >> pBIO->nValidBitsCount) & 1;
}
//-------------------------------------------------------------------------------------------------------------------------------
//
//-------------------------------------------------------------------------------------------------------------------------------
BitIO* BitIO_Create()
{
BitIO *pBIO = (BitIO*)Malloc(sizeof(BitIO));
return pBIO;
}
void BitIO_Destroy(BitIO *pBIO)
{
Free(pBIO);
}
int BitIO_WrittenBytesCount(BitIO *pBIO)
{
return (pBIO->pCurPos - pBIO->pStart);
}
void BitIO_InitEncoder(BitIO *pBIO, unsigned char *pBuffer, int nLen)
{
pBIO->pStart = pBuffer;
pBIO->pEnd = pBuffer + nLen;
pBIO->pCurPos = pBuffer;
pBIO->nBuffer = 0;
pBIO->nValidBitsCount = 8;
}
void BitIO_InitDecoder(BitIO *pBIO, unsigned char *pBuffer, int nLen)
{
pBIO->pStart = pBuffer;
pBIO->pEnd = pBuffer + nLen;
pBIO->pCurPos = pBuffer;
pBIO->nBuffer = 0;
pBIO->nValidBitsCount = 0;
}
void BitIO_Write(BitIO *pBIO, int nValue, int nLen)
{
for (int nIndex = nLen - 1; nIndex >= 0; nIndex--)
{
BitIO_PutBit(pBIO, (nValue >> nIndex) & 1);
}
}
int BitIO_Read(BitIO *pBIO, int nLen)
{
int nResult = 0;
for (int nIndex = nLen - 1; nIndex >= 0; nIndex--)
{
nResult += BitIO_GetBit(pBIO) << nIndex;
}
return nResult;
}
int BitIO_Flush(BitIO *pBIO)
{
pBIO->nValidBitsCount = 0;
if (BitIO_ByteOut(pBIO))
{
return 1;
}
if (7 == pBIO->nValidBitsCount)
{
pBIO->nValidBitsCount = 0;
if (BitIO_ByteOut(pBIO))
{
return 1;
}
}
return 0;
}
int BitIO_InAlign(BitIO *pBIO)
{
pBIO->nValidBitsCount = 0;
if ((pBIO->nBuffer & 0xff) == 0xff)
{
if (BitIO_ByteIn(pBIO))
{
return 1;
}
pBIO->nValidBitsCount = 0;
}
return 0;
}
}
\ No newline at end of file
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