DECODING_STATE CWelsDecoder::DecodeParser (const unsigned char* kpSrc,
const int kiSrcLen,
SParserBsInfo* pDstInfo) {
if (CheckBsBuffer (m_pDecContext, kiSrcLen)) {
return dsOutOfMemory;
}
if (kiSrcLen > 0 && kpSrc != NULL) {
#ifdef OUTPUT_BITSTREAM
if (m_pFBS) {
WelsFwrite (kpSrc, sizeof (unsigned char), kiSrcLen, m_pFBS);
WelsFflush (m_pFBS);
}
#endif//OUTPUT_BIT_STREAM
m_pDecContext->bEndOfStreamFlag = false;
} else {
//For application MODE, the error detection should be added for safe.
//But for CONSOLE MODE, when decoding LAST AU, kiSrcLen==0 && kpSrc==NULL.
m_pDecContext->bEndOfStreamFlag = true;
m_pDecContext->bInstantDecFlag = true;
}
m_pDecContext->iErrorCode = dsErrorFree; //initialize at the starting of AU decoding.
m_pDecContext->eErrorConMethod = ERROR_CON_DISABLE; //add protection to disable EC here.
if (!m_pDecContext->bFramePending) { //frame complete
m_pDecContext->pParserBsInfo->iNalNum = 0;
memset (m_pDecContext->pParserBsInfo->iNalLenInByte, 0, MAX_NAL_UNITS_IN_LAYER);
}
pDstInfo->iNalNum = 0;
pDstInfo->iSpsWidthInPixel = pDstInfo->iSpsHeightInPixel = 0;
if (pDstInfo) {
m_pDecContext->uiTimeStamp = pDstInfo->uiInBsTimeStamp;
pDstInfo->uiOutBsTimeStamp = 0;
} else {
m_pDecContext->uiTimeStamp = 0;
}
WelsDecodeBs (m_pDecContext, kpSrc, kiSrcLen, NULL, NULL, pDstInfo);
if (!m_pDecContext->bFramePending && m_pDecContext->pParserBsInfo->iNalNum) {
memcpy (pDstInfo, m_pDecContext->pParserBsInfo, sizeof (SParserBsInfo));
}
m_pDecContext->bInstantDecFlag = false; //reset no-delay flag
return (DECODING_STATE) m_pDecContext->iErrorCode;
}
DECODING_STATE CWelsDecoder::DecodeFrame2 (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo) {
if (CheckBsBuffer (m_pDecContext, kiSrcLen)) {
return dsOutOfMemory;
}
if (kiSrcLen > 0 && kpSrc != NULL) {
#ifdef OUTPUT_BIT_STREAM
if (m_pFBS) {
WelsFwrite (kpSrc, sizeof (unsigned char), kiSrcLen, m_pFBS);
WelsFflush (m_pFBS);
}
if (m_pFBSSize) {
WelsFwrite (&kiSrcLen, sizeof (int), 1, m_pFBSSize);
WelsFflush (m_pFBSSize);
}
#endif//OUTPUT_BIT_STREAM
m_pDecContext->bEndOfStreamFlag = false;
} else {
//For application MODE, the error detection should be added for safe.
//But for CONSOLE MODE, when decoding LAST AU, kiSrcLen==0 && kpSrc==NULL.
m_pDecContext->bEndOfStreamFlag = true;
m_pDecContext->bInstantDecFlag = true;
}
int64_t iStart, iEnd;
iStart = WelsTime();
ppDst[0] = ppDst[1] = ppDst[2] = NULL;
m_pDecContext->iErrorCode = dsErrorFree; //initialize at the starting of AU decoding.
m_pDecContext->iFeedbackVclNalInAu = FEEDBACK_UNKNOWN_NAL; //initialize
unsigned long long uiInBsTimeStamp = pDstInfo->uiInBsTimeStamp;
memset (pDstInfo, 0, sizeof (SBufferInfo));
pDstInfo->uiInBsTimeStamp = uiInBsTimeStamp;
#ifdef LONG_TERM_REF
m_pDecContext->bReferenceLostAtT0Flag = false; //initialize for LTR
m_pDecContext->bCurAuContainLtrMarkSeFlag = false;
m_pDecContext->iFrameNumOfAuMarkedLtr = 0;
m_pDecContext->iFrameNum = -1; //initialize
#endif
m_pDecContext->iFeedbackTidInAu = -1; //initialize
if (pDstInfo) {
pDstInfo->uiOutYuvTimeStamp = 0;
m_pDecContext->uiTimeStamp = pDstInfo->uiInBsTimeStamp;
} else {
m_pDecContext->uiTimeStamp = 0;
}
WelsDecodeBs (m_pDecContext, kpSrc, kiSrcLen, ppDst,
pDstInfo, NULL); //iErrorCode has been modified in this function
m_pDecContext->bInstantDecFlag = false; //reset no-delay flag
if (m_pDecContext->iErrorCode) {
EWelsNalUnitType eNalType =
NAL_UNIT_UNSPEC_0; //for NBR, IDR frames are expected to decode as followed if error decoding an IDR currently
eNalType = m_pDecContext->sCurNalHead.eNalUnitType;
if (m_pDecContext->iErrorCode & dsOutOfMemory) {
ResetDecoder();
}
//for AVC bitstream (excluding AVC with temporal scalability, including TP), as long as error occur, SHOULD notify upper layer key frame loss.
if ((IS_PARAM_SETS_NALS (eNalType) || NAL_UNIT_CODED_SLICE_IDR == eNalType) ||
(VIDEO_BITSTREAM_AVC == m_pDecContext->eVideoType)) {
if (m_pDecContext->eErrorConMethod == ERROR_CON_DISABLE) {
#ifdef LONG_TERM_REF
m_pDecContext->bParamSetsLostFlag = true;
#else
m_pDecContext->bReferenceLostAtT0Flag = true;
#endif
}
}
if (m_pDecContext->bPrintFrameErrorTraceFlag) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "decode failed, failure type:%d \n",
m_pDecContext->iErrorCode);
m_pDecContext->bPrintFrameErrorTraceFlag = false;
} else {
m_pDecContext->iIgnoredErrorInfoPacketCount ++;
if (m_pDecContext->iIgnoredErrorInfoPacketCount == INT_MAX) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_WARNING, "continuous error reached INT_MAX! Restart as 0.");
m_pDecContext->iIgnoredErrorInfoPacketCount = 0;
}
}
if ((m_pDecContext->eErrorConMethod != ERROR_CON_DISABLE) && (pDstInfo->iBufferStatus == 1)) {
//TODO after dec status updated
m_pDecContext->iErrorCode |= dsDataErrorConcealed;
//
if ((m_pDecContext->sDecoderStatistics.uiWidth != (unsigned int) pDstInfo->UsrData.sSystemBuffer.iWidth)
|| (m_pDecContext->sDecoderStatistics.uiHeight != (unsigned int) pDstInfo->UsrData.sSystemBuffer.iHeight)) {
m_pDecContext->sDecoderStatistics.uiResolutionChangeTimes++;
m_pDecContext->sDecoderStatistics.uiWidth = pDstInfo->UsrData.sSystemBuffer.iWidth;
m_pDecContext->sDecoderStatistics.uiHeight = pDstInfo->UsrData.sSystemBuffer.iHeight;
}
m_pDecContext->sDecoderStatistics.uiDecodedFrameCount++;
if (m_pDecContext->sDecoderStatistics.uiDecodedFrameCount == 0) { //exceed max value of uint32_t
ResetDecStatNums (&m_pDecContext->sDecoderStatistics);
m_pDecContext->sDecoderStatistics.uiDecodedFrameCount++;
}
int32_t iMbConcealedNum = m_pDecContext->iMbEcedNum + m_pDecContext->iMbEcedPropNum;
m_pDecContext->sDecoderStatistics.uiAvgEcRatio = m_pDecContext->iMbNum == 0 ?
(m_pDecContext->sDecoderStatistics.uiAvgEcRatio * m_pDecContext->sDecoderStatistics.uiEcFrameNum) : ((
m_pDecContext->sDecoderStatistics.uiAvgEcRatio * m_pDecContext->sDecoderStatistics.uiEcFrameNum) + ((
iMbConcealedNum * 100) / m_pDecContext->iMbNum));
m_pDecContext->sDecoderStatistics.uiAvgEcPropRatio = m_pDecContext->iMbNum == 0 ?
(m_pDecContext->sDecoderStatistics.uiAvgEcPropRatio * m_pDecContext->sDecoderStatistics.uiEcFrameNum) : ((
m_pDecContext->sDecoderStatistics.uiAvgEcPropRatio * m_pDecContext->sDecoderStatistics.uiEcFrameNum) + ((
m_pDecContext->iMbEcedPropNum * 100) / m_pDecContext->iMbNum));
m_pDecContext->sDecoderStatistics.uiEcFrameNum += (iMbConcealedNum == 0 ? 0 : 1);
m_pDecContext->sDecoderStatistics.uiAvgEcRatio = m_pDecContext->sDecoderStatistics.uiEcFrameNum == 0 ? 0 :
m_pDecContext->sDecoderStatistics.uiAvgEcRatio / m_pDecContext->sDecoderStatistics.uiEcFrameNum;
m_pDecContext->sDecoderStatistics.uiAvgEcPropRatio = m_pDecContext->sDecoderStatistics.uiEcFrameNum == 0 ? 0 :
m_pDecContext->sDecoderStatistics.uiAvgEcPropRatio / m_pDecContext->sDecoderStatistics.uiEcFrameNum;
}
iEnd = WelsTime();
m_pDecContext->dDecTime += (iEnd - iStart) / 1e3;
return (DECODING_STATE) m_pDecContext->iErrorCode;
}
// else Error free, the current codec works well
if (pDstInfo->iBufferStatus == 1) {
m_pDecContext->sDecoderStatistics.uiDecodedFrameCount++;
if (m_pDecContext->sDecoderStatistics.uiDecodedFrameCount == 0) { //exceed max value of uint32_t
ResetDecStatNums (&m_pDecContext->sDecoderStatistics);
m_pDecContext->sDecoderStatistics.uiDecodedFrameCount++;
}
if ((m_pDecContext->sDecoderStatistics.uiWidth != (unsigned int) pDstInfo->UsrData.sSystemBuffer.iWidth)
|| (m_pDecContext->sDecoderStatistics.uiHeight != (unsigned int) pDstInfo->UsrData.sSystemBuffer.iHeight)) {
m_pDecContext->sDecoderStatistics.uiResolutionChangeTimes++;
m_pDecContext->sDecoderStatistics.uiWidth = pDstInfo->UsrData.sSystemBuffer.iWidth;
m_pDecContext->sDecoderStatistics.uiHeight = pDstInfo->UsrData.sSystemBuffer.iHeight;
}
}
iEnd = WelsTime();
m_pDecContext->dDecTime += (iEnd - iStart) / 1e3;
return dsErrorFree;
}
DECODING_STATE CWelsDecoder::DecodeFrame2 (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,
SBufferInfo* pDstInfo) {
if (CheckBsBuffer (m_pDecContext, kiSrcLen)) {
return dsOutOfMemory;
}
if (kiSrcLen > 0 && kpSrc != NULL) {
#ifdef OUTPUT_BIT_STREAM
if (m_pFBS) {
WelsFwrite (kpSrc, sizeof (unsigned char), kiSrcLen, m_pFBS);
WelsFflush (m_pFBS);
}
if (m_pFBSSize) {
WelsFwrite (&kiSrcLen, sizeof (int), 1, m_pFBSSize);
WelsFflush (m_pFBSSize);
}
#endif//OUTPUT_BIT_STREAM
m_pDecContext->bEndOfStreamFlag = false;
} else {
//For application MODE, the error detection should be added for safe.
//But for CONSOLE MODE, when decoding LAST AU, kiSrcLen==0 && kpSrc==NULL.
m_pDecContext->bEndOfStreamFlag = true;
m_pDecContext->bInstantDecFlag = true;
}
ppDst[0] = ppDst[1] = ppDst[2] = NULL;
m_pDecContext->iErrorCode = dsErrorFree; //initialize at the starting of AU decoding.
m_pDecContext->iFeedbackVclNalInAu = FEEDBACK_UNKNOWN_NAL; //initialize
memset (pDstInfo, 0, sizeof (SBufferInfo));
#ifdef LONG_TERM_REF
m_pDecContext->bReferenceLostAtT0Flag = false; //initialize for LTR
m_pDecContext->bCurAuContainLtrMarkSeFlag = false;
m_pDecContext->iFrameNumOfAuMarkedLtr = 0;
m_pDecContext->iFrameNum = -1; //initialize
#endif
m_pDecContext->iFeedbackTidInAu = -1; //initialize
WelsDecodeBs (m_pDecContext, kpSrc, kiSrcLen, ppDst,
pDstInfo); //iErrorCode has been modified in this function
m_pDecContext->bInstantDecFlag = false; //reset no-delay flag
if (m_pDecContext->iErrorCode) {
EWelsNalUnitType eNalType =
NAL_UNIT_UNSPEC_0; //for NBR, IDR frames are expected to decode as followed if error decoding an IDR currently
eNalType = m_pDecContext->sCurNalHead.eNalUnitType;
//for AVC bitstream (excluding AVC with temporal scalability, including TP), as long as error occur, SHOULD notify upper layer key frame loss.
if ((IS_PARAM_SETS_NALS (eNalType) || NAL_UNIT_CODED_SLICE_IDR == eNalType) ||
(VIDEO_BITSTREAM_AVC == m_pDecContext->eVideoType)) {
if (m_pDecContext->iErrorConMethod == ERROR_CON_DISABLE) {
#ifdef LONG_TERM_REF
m_pDecContext->bParamSetsLostFlag = true;
#else
m_pDecContext->bReferenceLostAtT0Flag = true;
#endif
ResetParameterSetsState (m_pDecContext); //initial SPS&PPS ready flag
}
}
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "decode failed, failure type:%d \n",
m_pDecContext->iErrorCode);
return (DECODING_STATE)m_pDecContext->iErrorCode;
}
return dsErrorFree;
}