ref: 6050bf89f6410722f78a80dcc92963f9041182d2
dir: /codec/decoder/core/src/decoder.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.
*
*
* \file decoder.c
*
* \brief Interfaces implementation introduced in decoder system architecture
*
* \date 03/10/2009 Created
*
*************************************************************************************
*/
#include "codec_def.h"
#include "decoder.h"
#include "cpu.h"
#include "au_parser.h"
#include "get_intra_predictor.h"
#include "rec_mb.h"
#include "mc.h"
#include "decode_mb_aux.h"
#include "manage_dec_ref.h"
#include "decoder_core.h"
#include "deblocking.h"
#include "expand_pic.h"
#include "decode_slice.h"
#include "error_concealment.h"
#include "mem_align.h"
namespace WelsDec {
extern PPicture AllocPicture (PWelsDecoderContext pCtx, const int32_t kiPicWidth, const int32_t kiPicHeight);
extern void FreePicture (PPicture pPic);
static int32_t CreatePicBuff (PWelsDecoderContext pCtx, PPicBuff* ppPicBuf, const int32_t kiSize,
const int32_t kiPicWidth, const int32_t kiPicHeight) {
PPicBuff pPicBuf = NULL;
int32_t iPicIdx = 0;
if (kiSize <= 0 || kiPicWidth <= 0 || kiPicHeight <= 0) {
return 1;
}
pPicBuf = (PPicBuff)WelsMalloc (sizeof (SPicBuff), "PPicBuff");
if (NULL == pPicBuf) {
return 1;
}
pPicBuf->ppPic = (PPicture*)WelsMalloc (kiSize * sizeof (PPicture), "PPicture*");
if (NULL == pPicBuf->ppPic) {
pPicBuf->iCapacity = 0;
DestroyPicBuff (&pPicBuf);
return 1;
}
for (iPicIdx = 0; iPicIdx < kiSize; ++ iPicIdx) {
PPicture pPic = AllocPicture (pCtx, kiPicWidth, kiPicHeight);
if (NULL == pPic) {
// init capacity first for free memory
pPicBuf->iCapacity = iPicIdx;
DestroyPicBuff (&pPicBuf);
return 1;
}
pPicBuf->ppPic[iPicIdx] = pPic;
}
// initialize context in queue
pPicBuf->iCapacity = kiSize;
pPicBuf->iCurrentIdx = 0;
* ppPicBuf = pPicBuf;
return 0;
}
static int32_t IncreasePicBuff (PWelsDecoderContext pCtx, PPicBuff* ppPicBuf, const int32_t kiOldSize,
const int32_t kiPicWidth, const int32_t kiPicHeight, const int32_t kiNewSize) {
PPicBuff pPicOldBuf = *ppPicBuf;
PPicBuff pPicNewBuf = NULL;
int32_t iPicIdx = 0;
if (kiOldSize <= 0 || kiNewSize <= 0 || kiPicWidth <= 0 || kiPicHeight <= 0) {
return 1;
}
pPicNewBuf = (PPicBuff)WelsMalloc (sizeof (SPicBuff), "PPicBuff");
if (NULL == pPicNewBuf) {
return 1;
}
pPicNewBuf->ppPic = (PPicture*)WelsMalloc (kiNewSize * sizeof (PPicture), "PPicture*");
if (NULL == pPicNewBuf->ppPic) {
pPicNewBuf->iCapacity = 0;
DestroyPicBuff (&pPicNewBuf);
return 1;
}
// increase new PicBuf
for (iPicIdx = kiOldSize; iPicIdx < kiNewSize; ++ iPicIdx) {
PPicture pPic = AllocPicture (pCtx, kiPicWidth, kiPicHeight);
if (NULL == pPic) {
// Set maximum capacity as the new malloc memory at the tail
pPicNewBuf->iCapacity = iPicIdx;
DestroyPicBuff (&pPicNewBuf);
return 1;
}
pPicNewBuf->ppPic[iPicIdx] = pPic;
}
// copy old PicBuf to new PicBuf
memcpy (pPicNewBuf->ppPic, pPicOldBuf->ppPic, kiOldSize * sizeof (PPicture));
// initialize context in queue
pPicNewBuf->iCapacity = kiNewSize;
pPicNewBuf->iCurrentIdx = pPicOldBuf->iCurrentIdx;
* ppPicBuf = pPicNewBuf;
for (int32_t i = 0; i < pPicNewBuf->iCapacity; i++) {
pPicNewBuf->ppPic[i]->bUsedAsRef = false;
pPicNewBuf->ppPic[i]->bIsLongRef = false;
pPicNewBuf->ppPic[i]->uiRefCount = 0;
pPicNewBuf->ppPic[i]->bAvailableFlag = true;
pPicNewBuf->ppPic[i]->bIsComplete = false;
}
// remove old PicBuf
if (pPicOldBuf->ppPic != NULL) {
WelsFree (pPicOldBuf->ppPic, "pPicOldBuf->queue");
pPicOldBuf->ppPic = NULL;
}
pPicOldBuf->iCapacity = 0;
pPicOldBuf->iCurrentIdx = 0;
WelsFree (pPicOldBuf, "pPicOldBuf");
pPicOldBuf = NULL;
return 0;
}
static int32_t DecreasePicBuff (PWelsDecoderContext pCtx, PPicBuff* ppPicBuf, const int32_t kiOldSize,
const int32_t kiPicWidth, const int32_t kiPicHeight, const int32_t kiNewSize) {
PPicBuff pPicOldBuf = *ppPicBuf;
PPicBuff pPicNewBuf = NULL;
int32_t iPicIdx = 0;
if (kiOldSize <= 0 || kiNewSize <= 0 || kiPicWidth <= 0 || kiPicHeight <= 0) {
return 1;
}
pPicNewBuf = (PPicBuff)WelsMalloc (sizeof (SPicBuff), "PPicBuff");
if (NULL == pPicNewBuf) {
return 1;
}
pPicNewBuf->ppPic = (PPicture*)WelsMalloc (kiNewSize * sizeof (PPicture), "PPicture*");
if (NULL == pPicNewBuf->ppPic) {
pPicNewBuf->iCapacity = 0;
DestroyPicBuff (&pPicNewBuf);
return 1;
}
int32_t iPrevPicIdx = -1;
for (iPrevPicIdx = 0; iPrevPicIdx < kiOldSize; ++iPrevPicIdx) {
if (pCtx->pPreviousDecodedPictureInDpb == pPicOldBuf->ppPic[iPrevPicIdx]) {
break;
}
}
int32_t iDelIdx;
if (iPrevPicIdx < kiOldSize && iPrevPicIdx >= kiNewSize) {
// found pPreviousDecodedPictureInDpb,
pPicNewBuf->ppPic[0] = pPicOldBuf->ppPic[iPrevPicIdx];
pPicNewBuf->iCurrentIdx = 0;
memcpy (pPicNewBuf->ppPic + 1, pPicOldBuf->ppPic, (kiNewSize - 1) * sizeof (PPicture));
iDelIdx = kiNewSize - 1;
} else {
memcpy (pPicNewBuf->ppPic, pPicOldBuf->ppPic, kiNewSize * sizeof (PPicture));
pPicNewBuf->iCurrentIdx = iPrevPicIdx < kiNewSize ? iPrevPicIdx : 0;
iDelIdx = kiNewSize;
}
for (iPicIdx = iDelIdx; iPicIdx < kiOldSize; iPicIdx++) {
if (iPrevPicIdx != iPicIdx) {
if (pPicOldBuf->ppPic[iPicIdx] != NULL) {
FreePicture (pPicOldBuf->ppPic[iPicIdx]);
pPicOldBuf->ppPic[iPicIdx] = NULL;
}
}
}
// initialize context in queue
pPicNewBuf->iCapacity = kiNewSize;
*ppPicBuf = pPicNewBuf;
for (int32_t i = 0; i < pPicNewBuf->iCapacity; i++) {
pPicNewBuf->ppPic[i]->bUsedAsRef = false;
pPicNewBuf->ppPic[i]->bIsLongRef = false;
pPicNewBuf->ppPic[i]->uiRefCount = 0;
pPicNewBuf->ppPic[i]->bAvailableFlag = true;
pPicNewBuf->ppPic[i]->bIsComplete = false;
}
// remove old PicBuf
if (pPicOldBuf->ppPic != NULL) {
WelsFree (pPicOldBuf->ppPic, "pPicOldBuf->queue");
pPicOldBuf->ppPic = NULL;
}
pPicOldBuf->iCapacity = 0;
pPicOldBuf->iCurrentIdx = 0;
WelsFree (pPicOldBuf, "pPicOldBuf");
pPicOldBuf = NULL;
return 0;
}
void DestroyPicBuff (PPicBuff* ppPicBuf) {
PPicBuff pPicBuf = NULL;
if (NULL == ppPicBuf || NULL == *ppPicBuf)
return;
pPicBuf = *ppPicBuf;
while (pPicBuf->ppPic != NULL) {
int32_t iPicIdx = 0;
while (iPicIdx < pPicBuf->iCapacity) {
PPicture pPic = pPicBuf->ppPic[iPicIdx];
if (pPic != NULL) {
FreePicture (pPic);
}
pPic = NULL;
++ iPicIdx;
}
WelsFree (pPicBuf->ppPic, "pPicBuf->queue");
pPicBuf->ppPic = NULL;
}
pPicBuf->iCapacity = 0;
pPicBuf->iCurrentIdx = 0;
WelsFree (pPicBuf, "pPicBuf");
pPicBuf = NULL;
*ppPicBuf = NULL;
}
/*
* fill data fields in default for decoder context
*/
void WelsDecoderDefaults (PWelsDecoderContext pCtx, SLogContext* pLogCtx) {
int32_t iCpuCores = 1;
memset (pCtx, 0, sizeof (SWelsDecoderContext)); // fill zero first
pCtx->sLogCtx = *pLogCtx;
pCtx->pArgDec = NULL;
pCtx->eOutputColorFormat = videoFormatI420; // yuv in default
pCtx->bHaveGotMemory = false; // not ever request memory blocks for decoder context related
pCtx->uiCpuFlag = 0;
pCtx->bAuReadyFlag = 0; // au data is not ready
pCtx->bCabacInited = false;
pCtx->uiCpuFlag = WelsCPUFeatureDetect (&iCpuCores);
pCtx->iImgWidthInPixel = 0;
pCtx->iImgHeightInPixel = 0; // alloc picture data when picture size is available
pCtx->iLastImgWidthInPixel = 0;
pCtx->iLastImgHeightInPixel = 0;
pCtx->bFreezeOutput = true;
pCtx->iFrameNum = -1;
pCtx->iPrevFrameNum = -1;
pCtx->iErrorCode = ERR_NONE;
pCtx->pDec = NULL;
WelsResetRefPic (pCtx);
pCtx->iActiveFmoNum = 0;
pCtx->pPicBuff[LIST_0] = NULL;
pCtx->pPicBuff[LIST_1] = NULL;
pCtx->bAvcBasedFlag = true;
pCtx->eErrorConMethod = ERROR_CON_SLICE_COPY_CROSS_IDR_FREEZE_RES_CHANGE;
pCtx->pPreviousDecodedPictureInDpb = NULL;
pCtx->sDecoderStatistics.iAvgLumaQp = -1;
pCtx->bSpsLatePps = false;
pCtx->bUseScalingList = false;
}
/*
* destory_mb_blocks
*/
/*
* get size of reference picture list in target layer incoming, = (iNumRefFrames
*/
static inline int32_t GetTargetRefListSize (PWelsDecoderContext pCtx) {
int32_t iNumRefFrames = 0;
// +2 for EC MV Copy buffer exchange
if ((pCtx == NULL) || (pCtx->pSps == NULL)) {
iNumRefFrames = MAX_REF_PIC_COUNT + 2;
} else {
iNumRefFrames = pCtx->pSps->iNumRefFrames + 2;
}
#ifdef LONG_TERM_REF
//pic_queue size minimum set 2
if (iNumRefFrames < 2) {
iNumRefFrames = 2;
}
#endif
return iNumRefFrames;
}
/*
* request memory blocks for decoder avc part
*/
int32_t WelsRequestMem (PWelsDecoderContext pCtx, const int32_t kiMbWidth, const int32_t kiMbHeight) {
const int32_t kiPicWidth = kiMbWidth << 4;
const int32_t kiPicHeight = kiMbHeight << 4;
int32_t iErr = ERR_NONE;
int32_t iListIdx = 0; //, mb_blocks = 0;
int32_t iPicQueueSize = 0; // adaptive size of picture queue, = (pSps->iNumRefFrames x 2)
bool bNeedChangePicQueue = true;
WELS_VERIFY_RETURN_IF (ERR_INFO_INVALID_PARAM, (NULL == pCtx || kiPicWidth <= 0 || kiPicHeight <= 0))
// Fixed the issue about different gop size over last, 5/17/2010
// get picture queue size currently
iPicQueueSize = GetTargetRefListSize (pCtx); // adaptive size of picture queue, = (pSps->iNumRefFrames x 2)
pCtx->iPicQueueNumber = iPicQueueSize;
if (pCtx->pPicBuff[LIST_0] != NULL
&& pCtx->pPicBuff[LIST_0]->iCapacity ==
iPicQueueSize) // comparing current picture queue size requested and previous allocation picture queue
bNeedChangePicQueue = false;
// HD based pic buffer need consider memory size consumed when switch from 720p to other lower size
WELS_VERIFY_RETURN_IF (ERR_NONE, pCtx->bHaveGotMemory && (kiPicWidth == pCtx->iImgWidthInPixel
&& kiPicHeight == pCtx->iImgHeightInPixel) && (!bNeedChangePicQueue)) // have same scaled buffer
// sync update pRefList
WelsResetRefPic (pCtx); // added to sync update ref list due to pictures are free
if (pCtx->bHaveGotMemory && (kiPicWidth == pCtx->iImgWidthInPixel && kiPicHeight == pCtx->iImgHeightInPixel)
&& pCtx->pPicBuff[LIST_0] != NULL && pCtx->pPicBuff[LIST_0]->iCapacity != iPicQueueSize) {
// currently only active for LIST_0 due to have no B frames
WelsLog (& (pCtx->sLogCtx), WELS_LOG_INFO,
"WelsRequestMem(): memory re-alloc for no resolution change (size = %d * %d), ref list size change from %d to %d",
kiPicWidth, kiPicHeight, pCtx->pPicBuff[LIST_0]->iCapacity, iPicQueueSize);
if (pCtx->pPicBuff[LIST_0]->iCapacity < iPicQueueSize) {
iErr = IncreasePicBuff (pCtx, &pCtx->pPicBuff[LIST_0], pCtx->pPicBuff[LIST_0]->iCapacity, kiPicWidth, kiPicHeight,
iPicQueueSize);
} else {
iErr = DecreasePicBuff (pCtx, &pCtx->pPicBuff[LIST_0], pCtx->pPicBuff[LIST_0]->iCapacity, kiPicWidth, kiPicHeight,
iPicQueueSize);
}
} else {
if (pCtx->bHaveGotMemory)
WelsLog (& (pCtx->sLogCtx), WELS_LOG_INFO,
"WelsRequestMem(): memory re-alloc for resolution change, size change from %d * %d to %d * %d, ref list size change from %d to %d",
pCtx->iImgWidthInPixel, pCtx->iImgHeightInPixel, kiPicWidth, kiPicHeight, pCtx->pPicBuff[LIST_0]->iCapacity,
iPicQueueSize);
else
WelsLog (& (pCtx->sLogCtx), WELS_LOG_INFO, "WelsRequestMem(): memory alloc size = %d * %d, ref list size = %d",
kiPicWidth, kiPicHeight, iPicQueueSize);
// for Recycled_Pic_Queue
for (iListIdx = LIST_0; iListIdx < LIST_A; ++ iListIdx) {
PPicBuff* ppPic = &pCtx->pPicBuff[iListIdx];
if (NULL != ppPic && NULL != *ppPic) {
DestroyPicBuff (ppPic);
}
}
pCtx->pPreviousDecodedPictureInDpb = NULL;
// currently only active for LIST_0 due to have no B frames
iErr = CreatePicBuff (pCtx, &pCtx->pPicBuff[LIST_0], iPicQueueSize, kiPicWidth, kiPicHeight);
}
if (iErr != ERR_NONE)
return iErr;
pCtx->iImgWidthInPixel = kiPicWidth; // target width of image to be reconstruted while decoding
pCtx->iImgHeightInPixel = kiPicHeight; // target height of image to be reconstruted while decoding
pCtx->bHaveGotMemory = true; // global memory for decoder context related is requested
pCtx->pDec = NULL; // need prefetch a new pic due to spatial size changed
if (pCtx->pCabacDecEngine == NULL)
pCtx->pCabacDecEngine = (SWelsCabacDecEngine*) WelsMalloc (sizeof (SWelsCabacDecEngine), "pCtx->pCabacDecEngine");
return ERR_NONE;
}
/*
* free memory blocks in avc
*/
void WelsFreeMem (PWelsDecoderContext pCtx) {
int32_t iListIdx = 0;
/* TODO: free memory blocks introduced in avc */
ResetFmoList (pCtx);
WelsResetRefPic (pCtx);
// for sPicBuff
for (iListIdx = LIST_0; iListIdx < LIST_A; ++ iListIdx) {
PPicBuff* pPicBuff = &pCtx->pPicBuff[iListIdx];
if (NULL != pPicBuff && NULL != *pPicBuff) {
DestroyPicBuff (pPicBuff);
}
}
// added for safe memory
pCtx->iImgWidthInPixel = 0;
pCtx->iImgHeightInPixel = 0;
pCtx->iLastImgWidthInPixel = 0;
pCtx->iLastImgHeightInPixel = 0;
pCtx->bFreezeOutput = true;
pCtx->bHaveGotMemory = false;
WelsFree (pCtx->pCabacDecEngine, "pCtx->pCabacDecEngine");
}
/*!
* \brief Open decoder
*/
int32_t WelsOpenDecoder (PWelsDecoderContext pCtx) {
// function pointers
//initial MC function pointer--
int iRet = ERR_NONE;
InitMcFunc (& (pCtx->sMcFunc), pCtx->uiCpuFlag);
InitErrorCon (pCtx);
InitExpandPictureFunc (& (pCtx->sExpandPicFunc), pCtx->uiCpuFlag);
AssignFuncPointerForRec (pCtx);
// vlc tables
InitVlcTable (&pCtx->sVlcTable);
// startup memory
iRet = WelsInitMemory (pCtx);
if (ERR_NONE != iRet)
return iRet;
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true; // should be true to waiting IDR at incoming AU bits following, 6/4/2010
#endif //LONG_TERM_REF
pCtx->bNewSeqBegin = true;
pCtx->bPrintFrameErrorTraceFlag = true;
pCtx->iIgnoredErrorInfoPacketCount = 0;
return iRet;
}
/*!
* \brief Close decoder
*/
void WelsCloseDecoder (PWelsDecoderContext pCtx) {
WelsFreeMem (pCtx);
WelsFreeMemory (pCtx);
UninitialDqLayersContext (pCtx);
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = false;
#else
pCtx->bReferenceLostAtT0Flag = false;
#endif
pCtx->bNewSeqBegin = false;
pCtx->bPrintFrameErrorTraceFlag = false;
}
/*!
* \brief configure decoder parameters
*/
int32_t DecoderConfigParam (PWelsDecoderContext pCtx, const SDecodingParam* kpParam) {
if (NULL == pCtx || NULL == kpParam)
return 1;
pCtx->pParam = (SDecodingParam*)WelsMalloc (sizeof (SDecodingParam), "SDecodingParam");
if (NULL == pCtx->pParam)
return 1;
memcpy (pCtx->pParam, kpParam, sizeof (SDecodingParam));
pCtx->eOutputColorFormat = pCtx->pParam->eOutputColorFormat;
int32_t iRet = DecoderSetCsp (pCtx, pCtx->pParam->eOutputColorFormat);
if (iRet)
return iRet;
pCtx->eErrorConMethod = pCtx->pParam->eEcActiveIdc;
if (pCtx->bParseOnly) //parse only, disable EC method
pCtx->eErrorConMethod = ERROR_CON_DISABLE;
if (VIDEO_BITSTREAM_SVC == pCtx->pParam->sVideoProperty.eVideoBsType ||
VIDEO_BITSTREAM_AVC == pCtx->pParam->sVideoProperty.eVideoBsType) {
pCtx->eVideoType = pCtx->pParam->sVideoProperty.eVideoBsType;
} else {
pCtx->eVideoType = VIDEO_BITSTREAM_DEFAULT;
}
WelsLog (& (pCtx->sLogCtx), WELS_LOG_INFO, "eVideoType: %d", pCtx->eVideoType);
return 0;
}
/*!
*************************************************************************************
* \brief Initialize Wels decoder parameters and memory
*
* \param pCtx input context to be initialized at first stage
*
* \return 0 - successed
* \return 1 - failed
*
* \note N/A
*************************************************************************************
*/
int32_t WelsInitDecoder (PWelsDecoderContext pCtx, const bool bParseOnly, SLogContext* pLogCtx) {
if (pCtx == NULL) {
return ERR_INFO_INVALID_PTR;
}
// default
WelsDecoderDefaults (pCtx, pLogCtx);
pCtx->bParseOnly = bParseOnly;
// open decoder
return WelsOpenDecoder (pCtx);
}
/*!
*************************************************************************************
* \brief Uninitialize Wels decoder parameters and memory
*
* \param pCtx input context to be uninitialized at release stage
*
* \return NONE
*
* \note N/A
*************************************************************************************
*/
void WelsEndDecoder (PWelsDecoderContext pCtx) {
// close decoder
WelsCloseDecoder (pCtx);
}
void GetVclNalTemporalId (PWelsDecoderContext pCtx) {
PAccessUnit pAccessUnit = pCtx->pAccessUnitList;
int32_t idx = pAccessUnit->uiStartPos;
pCtx->iFeedbackVclNalInAu = FEEDBACK_VCL_NAL;
pCtx->iFeedbackTidInAu = pAccessUnit->pNalUnitsList[idx]->sNalHeaderExt.uiTemporalId;
}
/*!
*************************************************************************************
* \brief First entrance to decoding core interface.
*
* \param pCtx decoder context
* \param pBufBs bit streaming buffer
* \param kBsLen size in bytes length of bit streaming buffer input
* \param ppDst picture payload data to be output
* \param pDstBufInfo buf information of ouput data
*
* \return 0 - successed
* \return 1 - failed
*
* \note N/A
*************************************************************************************
*/
int32_t WelsDecodeBs (PWelsDecoderContext pCtx, const uint8_t* kpBsBuf, const int32_t kiBsLen,
uint8_t** ppDst, SBufferInfo* pDstBufInfo, SParserBsInfo* pDstBsInfo) {
if (!pCtx->bEndOfStreamFlag) {
SDataBuffer* pRawData = &pCtx->sRawData;
SDataBuffer* pSavedData = NULL;
int32_t iSrcIdx = 0; //the index of source bit-stream till now after parsing one or more NALs
int32_t iSrcConsumed = 0; // consumed bit count of source bs
int32_t iDstIdx = 0; //the size of current NAL after 0x03 removal and 00 00 01 removal
int32_t iSrcLength = 0; //the total size of current AU or NAL
int32_t iRet = 0;
int32_t iConsumedBytes = 0;
int32_t iOffset = 0;
uint8_t* pSrcNal = NULL;
uint8_t* pDstNal = NULL;
uint8_t* pNalPayload = NULL;
if (NULL == DetectStartCodePrefix (kpBsBuf, &iOffset,
kiBsLen)) { //CAN'T find the 00 00 01 start prefix from the source buffer
pCtx->iErrorCode |= dsBitstreamError;
return dsBitstreamError;
}
pSrcNal = const_cast<uint8_t*> (kpBsBuf) + iOffset;
iSrcLength = kiBsLen - iOffset;
if ((kiBsLen + 4) > (pRawData->pEnd - pRawData->pCurPos)) {
pRawData->pCurPos = pRawData->pHead;
}
if (pCtx->bParseOnly) {
pSavedData = &pCtx->sSavedData;
if ((kiBsLen + 4) > (pSavedData->pEnd - pSavedData->pCurPos)) {
pSavedData->pCurPos = pSavedData->pHead;
}
}
//copy raw data from source buffer (application) to raw data buffer (codec inside)
//0x03 removal and extract all of NAL Unit from current raw data
pDstNal = pRawData->pCurPos;
while (iSrcConsumed < iSrcLength) {
if ((2 + iSrcConsumed < iSrcLength) &&
(0 == LD16 (pSrcNal + iSrcIdx)) &&
((pSrcNal[2 + iSrcIdx] == 0x03) || (pSrcNal[2 + iSrcIdx] == 0x01))) {
if (pSrcNal[2 + iSrcIdx] == 0x03) {
ST16 (pDstNal + iDstIdx, 0);
iDstIdx += 2;
iSrcIdx += 3;
iSrcConsumed += 3;
} else {
iConsumedBytes = 0;
pDstNal[iDstIdx] = pDstNal[iDstIdx + 1] = pDstNal[iDstIdx + 2] = pDstNal[iDstIdx + 3] =
0; // set 4 reserved bytes to zero
pNalPayload = ParseNalHeader (pCtx, &pCtx->sCurNalHead, pDstNal, iDstIdx, pSrcNal - 3, iSrcIdx + 3, &iConsumedBytes);
if (pNalPayload) { //parse correct
if (IS_VCL_NAL (pCtx->sCurNalHead.eNalUnitType, 1)) {
CheckAndFinishLastPic (pCtx, ppDst, pDstBufInfo);
}
if (IS_PARAM_SETS_NALS (pCtx->sCurNalHead.eNalUnitType)) {
iRet = ParseNonVclNal (pCtx, pNalPayload, iDstIdx - iConsumedBytes, pSrcNal - 3, iSrcIdx + 3);
}
if (pCtx->bAuReadyFlag) {
ConstructAccessUnit (pCtx, ppDst, pDstBufInfo);
if ((dsOutOfMemory | dsNoParamSets) & pCtx->iErrorCode) {
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
if (dsOutOfMemory & pCtx->iErrorCode) {
return pCtx->iErrorCode;
}
}
}
}
if (iRet) {
iRet = 0;
if (dsNoParamSets & pCtx->iErrorCode) {
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
}
return pCtx->iErrorCode;
}
pDstNal += (iDstIdx + 4); //init, increase 4 reserved zero bytes, used to store the next NAL
if ((iSrcLength - iSrcConsumed + 4) > (pRawData->pEnd - pDstNal)) {
pDstNal = pRawData->pCurPos = pRawData->pHead;
} else {
pRawData->pCurPos = pDstNal;
}
pSrcNal += iSrcIdx + 3;
iSrcConsumed += 3;
iSrcIdx = 0;
iDstIdx = 0; //reset 0, used to statistic the length of next NAL
}
continue;
}
pDstNal[iDstIdx++] = pSrcNal[iSrcIdx++];
iSrcConsumed++;
}
//last NAL decoding
iConsumedBytes = 0;
pDstNal[iDstIdx] = pDstNal[iDstIdx + 1] = pDstNal[iDstIdx + 2] = pDstNal[iDstIdx + 3] =
0; // set 4 reserved bytes to zero
pNalPayload = ParseNalHeader (pCtx, &pCtx->sCurNalHead, pDstNal, iDstIdx, pSrcNal - 3, iSrcIdx + 3, &iConsumedBytes);
if (pNalPayload) { //parse correct
if (IS_VCL_NAL (pCtx->sCurNalHead.eNalUnitType, 1)) {
CheckAndFinishLastPic (pCtx, ppDst, pDstBufInfo);
}
if (IS_PARAM_SETS_NALS (pCtx->sCurNalHead.eNalUnitType)) {
iRet = ParseNonVclNal (pCtx, pNalPayload, iDstIdx - iConsumedBytes, pSrcNal - 3, iSrcIdx + 3);
}
if (pCtx->bAuReadyFlag) {
ConstructAccessUnit (pCtx, ppDst, pDstBufInfo);
if ((dsOutOfMemory | dsNoParamSets) & pCtx->iErrorCode) {
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
return pCtx->iErrorCode;
}
}
}
if (iRet) {
iRet = 0;
if (dsNoParamSets & pCtx->iErrorCode) {
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
}
return pCtx->iErrorCode;
}
pRawData->pCurPos = pDstNal + iDstIdx + 4; //init, increase 4 reserved zero bytes, used to store the next NAL
} else { /* no supplementary picture payload input, but stored a picture */
PAccessUnit pCurAu =
pCtx->pAccessUnitList; // current access unit, it will never point to NULL after decode's successful initialization
if (pCurAu->uiAvailUnitsNum == 0) {
return pCtx->iErrorCode;
} else {
pCtx->pAccessUnitList->uiEndPos = pCtx->pAccessUnitList->uiAvailUnitsNum - 1;
ConstructAccessUnit (pCtx, ppDst, pDstBufInfo);
if ((dsOutOfMemory | dsNoParamSets) & pCtx->iErrorCode) {
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
return pCtx->iErrorCode;
}
}
}
return pCtx->iErrorCode;
}
/*
* set colorspace format in decoder
*/
int32_t DecoderSetCsp (PWelsDecoderContext pCtx, const int32_t kiColorFormat) {
WELS_VERIFY_RETURN_IF (1, (NULL == pCtx));
pCtx->eOutputColorFormat = (EVideoFormatType) kiColorFormat;
if (pCtx->pParam != NULL) {
pCtx->pParam->eOutputColorFormat = (EVideoFormatType) kiColorFormat;
}
//For now, support only videoFormatI420!
if (kiColorFormat == (int32_t) videoFormatInternal) {
pCtx->pParam->eOutputColorFormat = pCtx->eOutputColorFormat = videoFormatI420;
} else if (kiColorFormat != (int32_t) videoFormatI420) {
WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING, "Support I420 output only for now! Change to I420...");
pCtx->pParam->eOutputColorFormat = pCtx->eOutputColorFormat = videoFormatI420;
return cmUnsupportedData;
}
return 0;
}
/*!
* \brief make sure synchonozization picture resolution (get from slice header) among different parts (i.e, memory related and so on)
* over decoder internal
* ( MB coordinate and parts of data within decoder context structure )
* \param pCtx Wels decoder context
* \param iMbWidth MB width
* \pram iMbHeight MB height
* \return 0 - successful; none 0 - something wrong
*/
int32_t SyncPictureResolutionExt (PWelsDecoderContext pCtx, const int32_t kiMbWidth, const int32_t kiMbHeight) {
int32_t iErr = ERR_NONE;
const int32_t kiPicWidth = kiMbWidth << 4;
const int32_t kiPicHeight = kiMbHeight << 4;
iErr = WelsRequestMem (pCtx, kiMbWidth, kiMbHeight); // common memory used
if (ERR_NONE != iErr) {
WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING,
"SyncPictureResolutionExt()::WelsRequestMem--buffer allocated failure.");
pCtx->iErrorCode = dsOutOfMemory;
return iErr;
}
iErr = InitialDqLayersContext (pCtx, kiPicWidth, kiPicHeight);
if (ERR_NONE != iErr) {
WelsLog (& (pCtx->sLogCtx), WELS_LOG_WARNING,
"SyncPictureResolutionExt()::InitialDqLayersContext--buffer allocated failure.");
pCtx->iErrorCode = dsOutOfMemory;
}
return iErr;
}
void AssignFuncPointerForRec (PWelsDecoderContext pCtx) {
pCtx->pGetI16x16LumaPredFunc[I16_PRED_V ] = WelsI16x16LumaPredV_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_H ] = WelsI16x16LumaPredH_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC ] = WelsI16x16LumaPredDc_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_P ] = WelsI16x16LumaPredPlane_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_L ] = WelsI16x16LumaPredDcLeft_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_T ] = WelsI16x16LumaPredDcTop_c;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_128] = WelsI16x16LumaPredDcNA_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_V ] = WelsI4x4LumaPredV_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_H ] = WelsI4x4LumaPredH_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC ] = WelsI4x4LumaPredDc_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC_L ] = WelsI4x4LumaPredDcLeft_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC_T ] = WelsI4x4LumaPredDcTop_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC_128] = WelsI4x4LumaPredDcNA_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL ] = WelsI4x4LumaPredDDL_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL_TOP] = WelsI4x4LumaPredDDLTop_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDR ] = WelsI4x4LumaPredDDR_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL ] = WelsI4x4LumaPredVL_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL_TOP] = WelsI4x4LumaPredVLTop_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VR ] = WelsI4x4LumaPredVR_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HU ] = WelsI4x4LumaPredHU_c;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HD ] = WelsI4x4LumaPredHD_c;
pCtx->pGetIChromaPredFunc[C_PRED_DC ] = WelsIChromaPredDc_c;
pCtx->pGetIChromaPredFunc[C_PRED_H ] = WelsIChromaPredH_c;
pCtx->pGetIChromaPredFunc[C_PRED_V ] = WelsIChromaPredV_c;
pCtx->pGetIChromaPredFunc[C_PRED_P ] = WelsIChromaPredPlane_c;
pCtx->pGetIChromaPredFunc[C_PRED_DC_L ] = WelsIChromaPredDcLeft_c;
pCtx->pGetIChromaPredFunc[C_PRED_DC_T ] = WelsIChromaPredDcTop_c;
pCtx->pGetIChromaPredFunc[C_PRED_DC_128] = WelsIChromaPredDcNA_c;
pCtx->pIdctResAddPredFunc = IdctResAddPred_c;
#if defined(HAVE_NEON)
if (pCtx->uiCpuFlag & WELS_CPU_NEON) {
pCtx->pIdctResAddPredFunc = IdctResAddPred_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC] = WelsDecoderI16x16LumaPredDc_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_P] = WelsDecoderI16x16LumaPredPlane_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_H] = WelsDecoderI16x16LumaPredH_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_V] = WelsDecoderI16x16LumaPredV_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_V ] = WelsDecoderI4x4LumaPredV_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_H ] = WelsDecoderI4x4LumaPredH_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL ] = WelsDecoderI4x4LumaPredDDL_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDR ] = WelsDecoderI4x4LumaPredDDR_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL ] = WelsDecoderI4x4LumaPredVL_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VR ] = WelsDecoderI4x4LumaPredVR_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HU ] = WelsDecoderI4x4LumaPredHU_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HD ] = WelsDecoderI4x4LumaPredHD_neon;
pCtx->pGetIChromaPredFunc[C_PRED_H] = WelsDecoderIChromaPredH_neon;
pCtx->pGetIChromaPredFunc[C_PRED_V] = WelsDecoderIChromaPredV_neon;
pCtx->pGetIChromaPredFunc[C_PRED_P ] = WelsDecoderIChromaPredPlane_neon;
pCtx->pGetIChromaPredFunc[C_PRED_DC] = WelsDecoderIChromaPredDc_neon;
}
#endif//HAVE_NEON
#if defined(HAVE_NEON_AARCH64)
if (pCtx->uiCpuFlag & WELS_CPU_NEON) {
pCtx->pIdctResAddPredFunc = IdctResAddPred_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC] = WelsDecoderI16x16LumaPredDc_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_P] = WelsDecoderI16x16LumaPredPlane_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_H] = WelsDecoderI16x16LumaPredH_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_V] = WelsDecoderI16x16LumaPredV_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_L] = WelsDecoderI16x16LumaPredDcLeft_AArch64_neon;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_T] = WelsDecoderI16x16LumaPredDcTop_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_H ] = WelsDecoderI4x4LumaPredH_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL ] = WelsDecoderI4x4LumaPredDDL_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL_TOP] = WelsDecoderI4x4LumaPredDDLTop_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL ] = WelsDecoderI4x4LumaPredVL_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL_TOP ] = WelsDecoderI4x4LumaPredVLTop_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VR ] = WelsDecoderI4x4LumaPredVR_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HU ] = WelsDecoderI4x4LumaPredHU_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HD ] = WelsDecoderI4x4LumaPredHD_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC ] = WelsDecoderI4x4LumaPredDc_AArch64_neon;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DC_T ] = WelsDecoderI4x4LumaPredDcTop_AArch64_neon;
pCtx->pGetIChromaPredFunc[C_PRED_H] = WelsDecoderIChromaPredH_AArch64_neon;
pCtx->pGetIChromaPredFunc[C_PRED_V] = WelsDecoderIChromaPredV_AArch64_neon;
pCtx->pGetIChromaPredFunc[C_PRED_P ] = WelsDecoderIChromaPredPlane_AArch64_neon;
pCtx->pGetIChromaPredFunc[C_PRED_DC] = WelsDecoderIChromaPredDc_AArch64_neon;
pCtx->pGetIChromaPredFunc[C_PRED_DC_T] = WelsDecoderIChromaPredDcTop_AArch64_neon;
}
#endif//HAVE_NEON_AARCH64
#if defined(X86_ASM)
if (pCtx->uiCpuFlag & WELS_CPU_MMXEXT) {
pCtx->pIdctResAddPredFunc = IdctResAddPred_mmx;
/////////mmx code opt---
pCtx->pGetIChromaPredFunc[C_PRED_H] = WelsDecoderIChromaPredH_mmx;
pCtx->pGetIChromaPredFunc[C_PRED_V] = WelsDecoderIChromaPredV_mmx;
pCtx->pGetIChromaPredFunc[C_PRED_DC_L ] = WelsDecoderIChromaPredDcLeft_mmx;
pCtx->pGetIChromaPredFunc[C_PRED_DC_128] = WelsDecoderIChromaPredDcNA_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDR] = WelsDecoderI4x4LumaPredDDR_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HD ] = WelsDecoderI4x4LumaPredHD_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_HU ] = WelsDecoderI4x4LumaPredHU_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VR ] = WelsDecoderI4x4LumaPredVR_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_DDL] = WelsDecoderI4x4LumaPredDDL_mmx;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_VL ] = WelsDecoderI4x4LumaPredVL_mmx;
}
if (pCtx->uiCpuFlag & WELS_CPU_SSE2) {
/////////sse2 code opt---
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC] = WelsDecoderI16x16LumaPredDc_sse2;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_P] = WelsDecoderI16x16LumaPredPlane_sse2;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_H] = WelsDecoderI16x16LumaPredH_sse2;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_V] = WelsDecoderI16x16LumaPredV_sse2;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_T ] = WelsDecoderI16x16LumaPredDcTop_sse2;
pCtx->pGetI16x16LumaPredFunc[I16_PRED_DC_128] = WelsDecoderI16x16LumaPredDcNA_sse2;
pCtx->pGetIChromaPredFunc[C_PRED_P ] = WelsDecoderIChromaPredPlane_sse2;
pCtx->pGetIChromaPredFunc[C_PRED_DC] = WelsDecoderIChromaPredDc_sse2;
pCtx->pGetIChromaPredFunc[C_PRED_DC_T] = WelsDecoderIChromaPredDcTop_sse2;
pCtx->pGetI4x4LumaPredFunc[I4_PRED_H] = WelsDecoderI4x4LumaPredH_sse2;
}
#endif
DeblockingInit (&pCtx->sDeblockingFunc, pCtx->uiCpuFlag);
WelsBlockFuncInit (&pCtx->sBlockFunc, pCtx->uiCpuFlag);
}
//reset decoder number related statistics info
void ResetDecStatNums (SDecoderStatistics* pDecStat) {
uint32_t uiWidth = pDecStat->uiWidth;
uint32_t uiHeight = pDecStat->uiHeight;
int32_t iAvgLumaQp = pDecStat->iAvgLumaQp;
memset (pDecStat, 0, sizeof (SDecoderStatistics));
pDecStat->uiWidth = uiWidth;
pDecStat->uiHeight = uiHeight;
pDecStat->iAvgLumaQp = iAvgLumaQp;
}
//update information when freezing occurs, including IDR/non-IDR number
void UpdateDecStatFreezingInfo (const bool kbIdrFlag, SDecoderStatistics* pDecStat) {
if (kbIdrFlag)
pDecStat->uiFreezingIDRNum++;
else
pDecStat->uiFreezingNonIDRNum++;
}
//update information when no freezing occurs, including QP, correct IDR number, ECed IDR number
void UpdateDecStatNoFreezingInfo (PWelsDecoderContext pCtx) {
PDqLayer pCurDq = pCtx->pCurDqLayer;
PPicture pPic = pCtx->pDec;
SDecoderStatistics* pDecStat = &pCtx->sDecoderStatistics;
if (pDecStat->iAvgLumaQp == -1) //first correct frame received
pDecStat->iAvgLumaQp = 0;
//update QP info
int32_t iTotalQp = 0;
const int32_t kiMbNum = pCurDq->iMbWidth * pCurDq->iMbHeight;
for (int32_t iMb = 0; iMb < kiMbNum; ++iMb) {
iTotalQp += pCurDq->pLumaQp[iMb] * pCurDq->pMbCorrectlyDecodedFlag[iMb];
}
iTotalQp /= kiMbNum;
if (pDecStat->uiDecodedFrameCount + 1 == 0) { //maximum uint32_t reached
ResetDecStatNums (pDecStat);
pDecStat->iAvgLumaQp = iTotalQp;
} else
pDecStat->iAvgLumaQp = (uint64_t) (pDecStat->iAvgLumaQp * pDecStat->uiDecodedFrameCount + iTotalQp) /
(pDecStat->uiDecodedFrameCount + 1);
//update IDR number
if (pCurDq->sLayerInfo.sNalHeaderExt.bIdrFlag) {
pDecStat->uiIDRCorrectNum += (pPic->bIsComplete);
pDecStat->uiEcIDRNum += (!pPic->bIsComplete);
}
}
//update decoder statistics information
void UpdateDecStat (PWelsDecoderContext pCtx, const bool kbOutput) {
if (pCtx->bFreezeOutput)
UpdateDecStatFreezingInfo (pCtx->pCurDqLayer->sLayerInfo.sNalHeaderExt.bIdrFlag, &pCtx->sDecoderStatistics);
else if (kbOutput)
UpdateDecStatNoFreezingInfo (pCtx);
}
} // namespace WelsDec