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add new API as DecodeFrameNoDelay for immediate decoding, which will be recommended decoding method for h.264 bitstream

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This commit is contained in:
huili2 2014-12-29 23:15:57 -08:00
parent d2d4ab8c67
commit e3e5208509
6 changed files with 96 additions and 65 deletions
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29
codec/api/svc/codec_api.h
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@ -114,6 +114,8 @@ typedef unsigned char bool;
* this can be done in a loop until data ends
* @code
* //for Decoding only
* iRet = DecodeFrameNoDelay(pBuf, iSize, pData, &sDstBufInfo);
* //or
* iRet = DecodeFrame2(pBuf, iSize, pData, &sDstBufInfo);
* //for Parsing only
* iRet = DecodeParser(pBuf, iSize, &sDstParseInfo);
@ -126,10 +128,11 @@ typedef unsigned char bool;
* output pData[0], pData[1], pData[2];
* }
* //for Parsing only, sDstParseInfo can be used for, e.g., HW decoding
* if (sDstBufInfo.iBufferStatus==1){
* if (sDstBufInfo.iNalNum > 0){
* Hardware decoding sDstParseInfo;
* }
* //no-delay decoding can be realized by directly calling decoder again with NULL input, as in the following. In this case, decoder would immediately reconstruct the input data. This can also be used similarly for Parsing only. Consequent decoding error and output indication should also be considered as above.
* //no-delay decoding can be realized by directly calling DecodeFrameNoDelay(), which is the recommended usage.
* //no-delay decoding can also be realized by directly calling DecodeFrame2() again with NULL input, as in the following. In this case, decoder would immediately reconstruct the input data. This can also be used similarly for Parsing only. Consequent decoding error and output indication should also be considered as above.
* iRet = DecodeFrame2(NULL, 0, pData, &sDstBufInfo);
* judge iRet, sDstBufInfo.iBufferStatus ...
* @endcode
@ -369,6 +372,23 @@ class ISVCDecoder {
int& iWidth,
int& iHeight) = 0;
/**
* @brief For slice level DecodeFrameNoDelay() (4 parameters input),
* whatever the function return value is, the output data
* of I420 format will only be available when pDstInfo->iBufferStatus == 1,.
* This function will parse and reconstruct the input frame immediately if it is complete
* It is recommended as the main decoding function for H.264/AVC format input
* @param pSrc the h264 stream to be decoded
* @param iSrcLen the length of h264 stream
* @param ppDst buffer pointer of decoded data (YUV)
* @param pDstInfo information provided to API(width, height, etc.)
* @return 0 - success; otherwise -failed;
*/
virtual DECODING_STATE EXTAPI DecodeFrameNoDelay (const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo) = 0;
/**
* @brief For slice level DecodeFrame2() (4 parameters input),
* whatever the function return value is, the output data
@ -472,6 +492,11 @@ DECODING_STATE (*DecodeFrame) (ISVCDecoder*, const unsigned char* pSrc,
int* iWidth,
int* iHeight);
DECODING_STATE (*DecodeFrameNoDelay) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo);
DECODING_STATE (*DecodeFrame2) (ISVCDecoder*, const unsigned char* pSrc,
const int iSrcLen,
unsigned char** ppDst,

39
codec/console/dec/src/h264dec.cpp
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@ -183,6 +183,11 @@ void H264DecodeInstance (ISVCDecoder* pDecoder, const char* kpH264FileName, cons
iSliceSize = i;
#endif
if (iSliceSize < 4) { //too small size, no effective data, ignore
iBufPos += iSliceSize;
continue;
}
//for coverage test purpose
int32_t iOutputColorFormat;
pDecoder->GetOption (DECODER_OPTION_DATAFORMAT, &iOutputColorFormat);
@ -211,7 +216,11 @@ void H264DecodeInstance (ISVCDecoder* pDecoder, const char* kpH264FileName, cons
uiTimeStamp ++;
memset (&sDstBufInfo, 0, sizeof (SBufferInfo));
sDstBufInfo.uiInBsTimeStamp = uiTimeStamp;
#ifndef NO_DELAY_DECODING
pDecoder->DecodeFrameNoDelay (pBuf + iBufPos, iSliceSize, pData, &sDstBufInfo);
#else
pDecoder->DecodeFrame2 (pBuf + iBufPos, iSliceSize, pData, &sDstBufInfo);
#endif
if (sDstBufInfo.iBufferStatus == 1) {
pDst[0] = pData[0];
@ -273,36 +282,6 @@ void H264DecodeInstance (ISVCDecoder* pDecoder, const char* kpH264FileName, cons
++ iSliceIndex;
}
// Get pending last frame
pData[0] = NULL;
pData[1] = NULL;
pData[2] = NULL;
memset (&sDstBufInfo, 0, sizeof (SBufferInfo));
pDecoder->DecodeFrame2 (NULL, 0, pData, &sDstBufInfo);
if (sDstBufInfo.iBufferStatus == 1) {
pDst[0] = pData[0];
pDst[1] = pData[1];
pDst[2] = pData[2];
}
if (sDstBufInfo.iBufferStatus == 1) {
cOutputModule.Process ((void**)pDst, &sDstBufInfo, pYuvFile);
iWidth = sDstBufInfo.UsrData.sSystemBuffer.iWidth;
iHeight = sDstBufInfo.UsrData.sSystemBuffer.iHeight;
if (pOptionFile != NULL) {
/* Anyway, we need write in case of final frame decoding */
fwrite (&iFrameCount, sizeof (iFrameCount), 1, pOptionFile);
fwrite (&iWidth , sizeof (iWidth) , 1, pOptionFile);
fwrite (&iHeight, sizeof (iHeight), 1, pOptionFile);
iLastWidth = iWidth;
iLastHeight = iHeight;
}
++ iFrameCount;
}
#if defined ( STICK_STREAM_SIZE )
if (fpTrack) {
fclose (fpTrack);

5
codec/decoder/plus/inc/welsDecoderExt.h
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@ -81,6 +81,11 @@ virtual DECODING_STATE EXTAPI DecodeFrame (const unsigned char* kpSrc,
int& iWidth,
int& iHeight);
virtual DECODING_STATE EXTAPI DecodeFrameNoDelay (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo);
virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,

16
codec/decoder/plus/src/welsDecoderExt.cpp
View File

@ -383,6 +383,22 @@ long CWelsDecoder::GetOption (DECODER_OPTION eOptID, void* pOption) {
return cmInitParaError;
}
DECODING_STATE CWelsDecoder::DecodeFrameNoDelay (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo) {
int iRet;
SBufferInfo sTmpBufferInfo;
iRet = (int) DecodeFrame2 (kpSrc, kiSrcLen, ppDst, pDstInfo);
memcpy (&sTmpBufferInfo, pDstInfo, sizeof (SBufferInfo));
iRet |= DecodeFrame2 (NULL, 0, ppDst, pDstInfo);
if ((pDstInfo->iBufferStatus == 0) && (sTmpBufferInfo.iBufferStatus == 1)) {
memcpy (pDstInfo, &sTmpBufferInfo, sizeof (SBufferInfo));
}
return (DECODING_STATE) iRet;
}
DECODING_STATE CWelsDecoder::DecodeFrame2 (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,

11
test/api/c_interface_test.c
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@ -25,11 +25,12 @@ void CheckDecoderInterface(ISVCDecoder* p, CheckFunc check) {
CHECK (1, p, Initialize);
CHECK (2, p, Uninitialize);
CHECK (3, p, DecodeFrame);
CHECK(4, p, DecodeFrame2);
CHECK(5, p, DecodeFrameEx);
CHECK(6, p, DecodeParser);
CHECK(7, p, SetOption);
CHECK(8, p, GetOption);
CHECK (4, p, DecodeFrameNoDelay);
CHECK (5, p, DecodeFrame2);
CHECK (6, p, DecodeFrameEx);
CHECK (7, p, DecodeParser);
CHECK (8, p, SetOption);
CHECK (9, p, GetOption);
}
struct bool_test_struct {

15
test/api/cpp_interface_test.cpp
View File

@ -77,29 +77,34 @@ struct SVCDecoderImpl : public ISVCDecoder {
EXPECT_TRUE (gThis == this);
return static_cast<DECODING_STATE> (3);
}
virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* pSrc,
virtual DECODING_STATE EXTAPI DecodeFrameNoDelay (const unsigned char* pSrc,
const int iSrcLen, unsigned char** ppDst, SBufferInfo* pDstInfo) {
EXPECT_TRUE (gThis == this);
return static_cast<DECODING_STATE> (4);
}
virtual DECODING_STATE EXTAPI DecodeFrame2 (const unsigned char* pSrc,
const int iSrcLen, unsigned char** ppDst, SBufferInfo* pDstInfo) {
EXPECT_TRUE (gThis == this);
return static_cast<DECODING_STATE> (5);
}
virtual DECODING_STATE EXTAPI DecodeFrameEx (const unsigned char* pSrc,
const int iSrcLen, unsigned char* pDst, int iDstStride,
int& iDstLen, int& iWidth, int& iHeight, int& iColorFormat) {
EXPECT_TRUE (gThis == this);
return static_cast<DECODING_STATE> (5);
return static_cast<DECODING_STATE> (6);
}
virtual DECODING_STATE EXTAPI DecodeParser (const unsigned char* pSrc,
const int iSrcLen, SParserBsInfo* pDstInfo) {
EXPECT_TRUE (gThis == this);
return static_cast<DECODING_STATE> (6);
return static_cast<DECODING_STATE> (7);
}
virtual long EXTAPI SetOption (DECODER_OPTION eOptionId, void* pOption) {
EXPECT_TRUE (gThis == this);
return 7;
return static_cast<DECODING_STATE> (8);
}
virtual long EXTAPI GetOption (DECODER_OPTION eOptionId, void* pOption) {
EXPECT_TRUE (gThis == this);
return 8;
return static_cast<DECODING_STATE> (9);
}
};