ref: 1ff9de36ceebaf4fae51ebba0e780cb986f5fe9c
dir: /codec/decoder/plus/src/welsDecoderExt.cpp/
/*!
* \copy
* Copyright (c) 2009-2013, Cisco Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*
* welsDecoderExt.cpp
*
* Abstract
* Cisco OpenH264 decoder extension utilization
*
* History
* 3/12/2009 Created
*
*
************************************************************************/
//#include <assert.h>
#include "welsDecoderExt.h"
#include "welsCodecTrace.h"
#include "codec_def.h"
#include "typedefs.h"
#include "mem_align.h"
#include "utils.h"
#include "version.h"
//#include "macros.h"
#include "decoder.h"
#include "decoder_core.h"
#include "error_concealment.h"
#include "measure_time.h"
extern "C" {
#include "decoder_core.h"
#include "manage_dec_ref.h"
}
#include "error_code.h"
#include "crt_util_safe_x.h" // Safe CRT routines like util for cross platforms
#include <time.h>
#if defined(_WIN32) /*&& defined(_DEBUG)*/
#include <windows.h>
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#else
#include <sys/time.h>
#endif
namespace WelsDec {
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
/***************************************************************************
* Description:
* class CWelsDecoder constructor function, do initialization and
* alloc memory required
*
* Input parameters: none
*
* return: none
***************************************************************************/
CWelsDecoder::CWelsDecoder (void)
: m_pDecContext (NULL),
m_pWelsTrace (NULL) {
#ifdef OUTPUT_BIT_STREAM
char chFileName[1024] = { 0 }; //for .264
int iBufUsed = 0;
int iBufLeft = 1023;
int iCurUsed;
char chFileNameSize[1024] = { 0 }; //for .len
int iBufUsedSize = 0;
int iBufLeftSize = 1023;
int iCurUsedSize;
#endif//OUTPUT_BIT_STREAM
m_pWelsTrace = new welsCodecTrace();
if (m_pWelsTrace != NULL) {
m_pWelsTrace->SetTraceLevel (WELS_LOG_ERROR);
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "CWelsDecoder::CWelsDecoder() entry");
}
#ifdef OUTPUT_BIT_STREAM
SWelsTime sCurTime;
WelsGetTimeOfDay (&sCurTime);
iCurUsed = WelsSnprintf (chFileName, iBufLeft, "bs_0x%p_", (void*)this);
iCurUsedSize = WelsSnprintf (chFileNameSize, iBufLeftSize, "size_0x%p_", (void*)this);
iBufUsed += iCurUsed;
iBufLeft -= iCurUsed;
if (iBufLeft > 0) {
iCurUsed = WelsStrftime (&chFileName[iBufUsed], iBufLeft, "%y%m%d%H%M%S", &sCurTime);
iBufUsed += iCurUsed;
iBufLeft -= iCurUsed;
}
iBufUsedSize += iCurUsedSize;
iBufLeftSize -= iCurUsedSize;
if (iBufLeftSize > 0) {
iCurUsedSize = WelsStrftime (&chFileNameSize[iBufUsedSize], iBufLeftSize, "%y%m%d%H%M%S", &sCurTime);
iBufUsedSize += iCurUsedSize;
iBufLeftSize -= iCurUsedSize;
}
if (iBufLeft > 0) {
iCurUsed = WelsSnprintf (&chFileName[iBufUsed], iBufLeft, ".%03.3u.264", WelsGetMillisecond (&sCurTime));
iBufUsed += iCurUsed;
iBufLeft -= iCurUsed;
}
if (iBufLeftSize > 0) {
iCurUsedSize = WelsSnprintf (&chFileNameSize[iBufUsedSize], iBufLeftSize, ".%03.3u.len",
WelsGetMillisecond (&sCurTime));
iBufUsedSize += iCurUsedSize;
iBufLeftSize -= iCurUsedSize;
}
m_pFBS = WelsFopen (chFileName, "wb");
m_pFBSSize = WelsFopen (chFileNameSize, "wb");
#endif//OUTPUT_BIT_STREAM
}
/***************************************************************************
* Description:
* class CWelsDecoder destructor function, destroy allocced memory
*
* Input parameters: none
*
* return: none
***************************************************************************/
CWelsDecoder::~CWelsDecoder() {
if (m_pWelsTrace != NULL) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "CWelsDecoder::~CWelsDecoder()");
}
UninitDecoder();
#ifdef OUTPUT_BIT_STREAM
if (m_pFBS) {
WelsFclose (m_pFBS);
m_pFBS = NULL;
}
if (m_pFBSSize) {
WelsFclose (m_pFBSSize);
m_pFBSSize = NULL;
}
#endif//OUTPUT_BIT_STREAM
if (m_pWelsTrace != NULL) {
delete m_pWelsTrace;
m_pWelsTrace = NULL;
}
}
long CWelsDecoder::Initialize (const SDecodingParam* pParam) {
int iRet = ERR_NONE;
if (m_pWelsTrace == NULL) {
return cmMallocMemeError;
}
if (pParam == NULL) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_ERROR, "CWelsDecoder::Initialize(), invalid input argument.");
return cmInitParaError;
}
// H.264 decoder initialization,including memory allocation,then open it ready to decode
iRet = InitDecoder (pParam->bParseOnly);
if (iRet)
return iRet;
iRet = DecoderConfigParam (m_pDecContext, pParam);
if (iRet)
return iRet;
return cmResultSuccess;
}
long CWelsDecoder::Uninitialize() {
UninitDecoder();
return ERR_NONE;
}
void CWelsDecoder::UninitDecoder (void) {
if (NULL == m_pDecContext)
return;
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "CWelsDecoder::uninit_decoder(), openh264 codec version = %s.",
VERSION_NUMBER);
WelsEndDecoder (m_pDecContext);
if (NULL != m_pDecContext) {
WelsFree (m_pDecContext, "m_pDecContext");
m_pDecContext = NULL;
}
}
// the return value of this function is not suitable, it need report failure info to upper layer.
int32_t CWelsDecoder::InitDecoder (const bool bParseOnly) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "CWelsDecoder::init_decoder(), openh264 codec version = %s",
VERSION_NUMBER);
if (m_pDecContext) //free
UninitDecoder();
m_pDecContext = (PWelsDecoderContext)WelsMalloc (sizeof (SWelsDecoderContext), "m_pDecContext");
if (NULL == m_pDecContext)
return cmMallocMemeError;
return WelsInitDecoder (m_pDecContext, bParseOnly, &m_pWelsTrace->m_sLogCtx);
}
/*
* Set Option
*/
long CWelsDecoder::SetOption (DECODER_OPTION eOptID, void* pOption) {
int iVal = 0;
if (m_pDecContext == NULL && eOptID != DECODER_OPTION_TRACE_LEVEL &&
eOptID != DECODER_OPTION_TRACE_CALLBACK && eOptID != DECODER_OPTION_TRACE_CALLBACK_CONTEXT)
return dsInitialOptExpected;
if (eOptID == DECODER_OPTION_DATAFORMAT) { // Set color space of decoding output frame
if (pOption == NULL)
return cmInitParaError;
iVal = * ((int*)pOption); // is_rgb
return DecoderSetCsp (m_pDecContext, iVal);
} else if (eOptID == DECODER_OPTION_END_OF_STREAM) { // Indicate bit-stream of the final frame to be decoded
if (pOption == NULL)
return cmInitParaError;
iVal = * ((int*)pOption); // boolean value for whether enabled End Of Stream flag
m_pDecContext->bEndOfStreamFlag = iVal ? true : false;
return cmResultSuccess;
} else if (eOptID == DECODER_OPTION_ERROR_CON_IDC) { // Indicate error concealment status
if (pOption == NULL)
return cmInitParaError;
iVal = * ((int*)pOption); // int value for error concealment idc
iVal = WELS_CLIP3 (iVal, (int32_t) ERROR_CON_DISABLE, (int32_t) ERROR_CON_SLICE_MV_COPY_CROSS_IDR_FREEZE_RES_CHANGE);
m_pDecContext->eErrorConMethod = (ERROR_CON_IDC) iVal;
InitErrorCon (m_pDecContext);
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO,
"CWelsDecoder::SetOption for ERROR_CON_IDC = %d.", iVal);
return cmResultSuccess;
} else if (eOptID == DECODER_OPTION_TRACE_LEVEL) {
if (m_pWelsTrace) {
uint32_t level = * ((uint32_t*)pOption);
m_pWelsTrace->SetTraceLevel (level);
}
return cmResultSuccess;
} else if (eOptID == DECODER_OPTION_TRACE_CALLBACK) {
if (m_pWelsTrace) {
WelsTraceCallback callback = * ((WelsTraceCallback*)pOption);
m_pWelsTrace->SetTraceCallback (callback);
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_INFO, "CWelsDecoder::SetOption(), openh264 codec version = %s.",
VERSION_NUMBER);
}
return cmResultSuccess;
} else if (eOptID == DECODER_OPTION_TRACE_CALLBACK_CONTEXT) {
if (m_pWelsTrace) {
void* ctx = * ((void**)pOption);
m_pWelsTrace->SetTraceCallbackContext (ctx);
}
return cmResultSuccess;
} else if (eOptID == DECODER_OPTION_GET_STATISTICS) {
WelsLog (&m_pWelsTrace->m_sLogCtx, WELS_LOG_WARNING,
"CWelsDecoder::SetOption():DECODER_OPTION_GET_STATISTICS: this option is get-only!");
return cmInitParaError;
}
return cmInitParaError;
}
/*
* Get Option
*/
long CWelsDecoder::GetOption (DECODER_OPTION eOptID, void* pOption) {
int iVal = 0;
if (m_pDecContext == NULL)
return cmInitExpected;
if (pOption == NULL)
return cmInitParaError;
if (DECODER_OPTION_DATAFORMAT == eOptID) {
iVal = (int32_t) m_pDecContext->eOutputColorFormat;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_END_OF_STREAM == eOptID) {
iVal = m_pDecContext->bEndOfStreamFlag;
* ((int*)pOption) = iVal;
return cmResultSuccess;
}
#ifdef LONG_TERM_REF
else if (DECODER_OPTION_IDR_PIC_ID == eOptID) {
iVal = m_pDecContext->uiCurIdrPicId;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_FRAME_NUM == eOptID) {
iVal = m_pDecContext->iFrameNum;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_LTR_MARKING_FLAG == eOptID) {
iVal = m_pDecContext->bCurAuContainLtrMarkSeFlag;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_LTR_MARKED_FRAME_NUM == eOptID) {
iVal = m_pDecContext->iFrameNumOfAuMarkedLtr;
* ((int*)pOption) = iVal;
return cmResultSuccess;
}
#endif
else if (DECODER_OPTION_VCL_NAL == eOptID) { //feedback whether or not have VCL NAL in current AU
iVal = m_pDecContext->iFeedbackVclNalInAu;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_TEMPORAL_ID == eOptID) { //if have VCL NAL in current AU, then feedback the temporal ID
iVal = m_pDecContext->iFeedbackTidInAu;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_ERROR_CON_IDC == eOptID) {
iVal = (int) m_pDecContext->eErrorConMethod;
* ((int*)pOption) = iVal;
return cmResultSuccess;
} else if (DECODER_OPTION_GET_STATISTICS == eOptID) { // get decoder statistics info for real time debugging
SDecoderStatistics* pDecoderStatistics = (static_cast<SDecoderStatistics*> (pOption));
memcpy (pDecoderStatistics, &m_pDecContext->sDecoderStatistics, sizeof (SDecoderStatistics));
pDecoderStatistics->fAverageFrameSpeedInMs = (float) (m_pDecContext->dDecTime) /
(m_pDecContext->sDecoderStatistics.uiDecodedFrameCount);
memset (&m_pDecContext->sDecoderStatistics, 0, sizeof (SDecoderStatistics));
m_pDecContext->dDecTime = 0;
return cmResultSuccess;
}
return cmInitParaError;
}
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
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, 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;
//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
ResetParameterSetsState (m_pDecContext); //initial SPS&PPS ready flag
}
}
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->eErrorConMethod == ERROR_CON_FRAME_COPY)
m_pDecContext->sDecoderStatistics.uiAvgEcRatio = (m_pDecContext->sDecoderStatistics.uiAvgEcRatio *
m_pDecContext->sDecoderStatistics.uiEcFrameNum) + 100;
//
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++;
m_pDecContext->sDecoderStatistics.uiEcFrameNum++;
m_pDecContext->sDecoderStatistics.uiAvgEcRatio = m_pDecContext->sDecoderStatistics.uiAvgEcRatio /
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) {
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++;
}
iEnd = WelsTime();
m_pDecContext->dDecTime += (iEnd - iStart) / 1e3;
return dsErrorFree;
}
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->pParserBsInfo = pDstInfo;
pDstInfo->iNalNum = 0;
pDstInfo->iSpsWidthInPixel = pDstInfo->iSpsHeightInPixel = 0;
WelsDecodeBs (m_pDecContext, kpSrc, kiSrcLen, NULL, NULL, pDstInfo);
return (DECODING_STATE) m_pDecContext->iErrorCode;
}
DECODING_STATE CWelsDecoder::DecodeFrame (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char** ppDst,
int* pStride,
int& iWidth,
int& iHeight) {
DECODING_STATE eDecState = dsErrorFree;
SBufferInfo DstInfo;
memset (&DstInfo, 0, sizeof (SBufferInfo));
DstInfo.UsrData.sSystemBuffer.iStride[0] = pStride[0];
DstInfo.UsrData.sSystemBuffer.iStride[1] = pStride[1];
DstInfo.UsrData.sSystemBuffer.iWidth = iWidth;
DstInfo.UsrData.sSystemBuffer.iHeight = iHeight;
eDecState = DecodeFrame2 (kpSrc, kiSrcLen, ppDst, &DstInfo);
if (eDecState == dsErrorFree) {
pStride[0] = DstInfo.UsrData.sSystemBuffer.iStride[0];
pStride[1] = DstInfo.UsrData.sSystemBuffer.iStride[1];
iWidth = DstInfo.UsrData.sSystemBuffer.iWidth;
iHeight = DstInfo.UsrData.sSystemBuffer.iHeight;
}
return eDecState;
}
DECODING_STATE CWelsDecoder::DecodeFrameEx (const unsigned char* kpSrc,
const int kiSrcLen,
unsigned char* pDst,
int iDstStride,
int& iDstLen,
int& iWidth,
int& iHeight,
int& iColorFormat) {
DECODING_STATE state = dsErrorFree;
return state;
}
} // namespace WelsDec
using namespace WelsDec;
/*
* WelsGetDecoderCapability
* @return: DecCapability information
*/
int WelsGetDecoderCapability (SDecoderCapability* pDecCapability) {
memset (pDecCapability, 0, sizeof (SDecoderCapability));
pDecCapability->iProfileIdc = 66; //Baseline
pDecCapability->iProfileIop = 0xE0; //11100000b
pDecCapability->iLevelIdc = 32; //level_idc = 3.2
pDecCapability->iMaxMbps = 216000; //from level_idc = 3.2
pDecCapability->iMaxFs = 5120; //from level_idc = 3.2
pDecCapability->iMaxCpb = 20000; //from level_idc = 3.2
pDecCapability->iMaxDpb = 20480; //from level_idc = 3.2
pDecCapability->iMaxBr = 20000; //from level_idc = 3.2
pDecCapability->bRedPicCap = 0; //not support redundant pic
return ERR_NONE;
}
/* WINAPI is indeed in prefix due to sync to application layer callings!! */
/*
* WelsCreateDecoder
* @return: success in return 0, otherwise failed.
*/
long WelsCreateDecoder (ISVCDecoder** ppDecoder) {
if (NULL == ppDecoder) {
return ERR_INVALID_PARAMETERS;
}
*ppDecoder = new CWelsDecoder();
if (NULL == *ppDecoder) {
return ERR_MALLOC_FAILED;
}
return ERR_NONE;
}
/*
* WelsDestroyDecoder
*/
void WelsDestroyDecoder (ISVCDecoder* pDecoder) {
if (NULL != pDecoder) {
delete (CWelsDecoder*)pDecoder;
}
}