ref: e307cbb6a1c426e2dbb23054d02d6ebdaaa559c7
dir: /codec/decoder/core/src/decoder_core.cpp/
/*!
* \copy
* Copyright (c) 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.
*
* decoder_core.c: Wels decoder framework core implementation
*/
#include <string.h>
#include "codec_def.h"
#include "decoder_core.h"
#include "typedefs.h"
#include "wels_const.h"
#include "wels_common_basis.h"
#include "codec_app_def.h"
#include "decoder_context.h"
#include "dec_golomb.h"
#include "bit_stream.h"
#include "error_code.h"
#include "parameter_sets.h"
#include "fmo.h"
#include "utils.h"
#include "memmgr_nal_unit.h"
#include "dec_frame.h"
#include "au_parser.h"
#include "pic_queue.h"
#include "ls_defines.h"
#include "decode_slice.h"
#include "manage_dec_ref.h"
#include "expand_pic.h"
#include "decoder.h"
#include "decode_mb_aux.h"
#include "mem_align.h"
namespace WelsDec {
static inline int32_t DecodeFrameConstruction (PWelsDecoderContext pCtx, uint8_t** ppDst, int32_t* pDstLen,
int32_t* pWidth, int32_t* pHeight, SBufferInfo* pDstInfo) {
PDqLayer pCurDq = pCtx->pCurDqLayer;
PPicture pPic = pCtx->pDec;
const int32_t kiWidth = pCurDq->iMbWidth << 4;
const int32_t kiHeight = pCurDq->iMbHeight << 4;
const int32_t kiTotalNumMbInCurLayer = pCurDq->iMbWidth * pCurDq->iMbHeight;
if (pPic->iTotalNumMbRec != kiTotalNumMbInCurLayer) {
WelsLog (pCtx, WELS_LOG_WARNING,
"DecodeFrameConstruction():::iTotalNumMbRec:%d, total_num_mb_sps:%d, cur_layer_mb_width:%d, cur_layer_mb_height:%d \n",
pPic->iTotalNumMbRec, kiTotalNumMbInCurLayer, pCurDq->iMbWidth, pCurDq->iMbHeight);
return -1;
}
#ifdef NO_WAITING_AU
pPic->iTotalNumMbRec = 0;
#endif
if (I_SLICE == pCurDq->sLayerInfo.sSliceInLayer.eSliceType) {
memcpy (& (pCtx->sFrameCrop), & (pCurDq->sLayerInfo.sSliceInLayer.sSliceHeaderExt.sSliceHeader.pSps->sFrameCrop),
sizeof (SPosOffset)); //confirmed_safe_unsafe_usage
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = false;
#else
pCtx->bReferenceLostAtT0Flag = false; // need initialize it due I_SLICE, 6/4/2010
#endif //LONG_TERM_REF
WelsLog (pCtx, WELS_LOG_INFO,
"DecodeFrameConstruction()::::output good I frame, %d x %d, crop_left:%d, crop_right:%d, crop_top:%d, crop_bottom:%d.\n",
kiWidth, kiHeight, pCtx->sFrameCrop.iLeftOffset, pCtx->sFrameCrop.iRightOffset, pCtx->sFrameCrop.iTopOffset,
pCtx->sFrameCrop.iBottomOffset);
WelsLog (pCtx, WELS_LOG_INFO, "After decoding, set_mode:[%s], eWorkMode:[%s], eBufferProperty:[%s]\n",
DECODER_MODE_NAME (pCtx->iSetMode), DECODER_MODE_NAME (pCtx->iDecoderMode),
OUTPUT_PROPERTY_NAME (pDstInfo->eBufferProperty));
}
//////output:::normal path
ppDst[0] = pPic->pData[0];
ppDst[1] = pPic->pData[1];
ppDst[2] = pPic->pData[2];
*pDstLen = pPic->iLinesize[0];
* (pDstLen + 1) = pPic->iLinesize[1];
*pWidth = kiWidth;
*pHeight = kiHeight;
pDstInfo->UsrData.sSystemBuffer.iFormat = videoFormatI420;
pDstInfo->UsrData.sSystemBuffer.iWidth = kiWidth - (pCtx->sFrameCrop.iLeftOffset + pCtx->sFrameCrop.iRightOffset) * 2;
pDstInfo->UsrData.sSystemBuffer.iHeight = kiHeight - (pCtx->sFrameCrop.iTopOffset + pCtx->sFrameCrop.iBottomOffset) * 2;
pDstInfo->UsrData.sSystemBuffer.iStride[0] = pPic->iLinesize[0];
pDstInfo->UsrData.sSystemBuffer.iStride[1] = pPic->iLinesize[1];
ppDst[0] = ppDst[0] + pCtx->sFrameCrop.iTopOffset * 2 * pPic->iLinesize[0] + pCtx->sFrameCrop.iLeftOffset * 2;
ppDst[1] = ppDst[1] + pCtx->sFrameCrop.iTopOffset * pPic->iLinesize[1] + pCtx->sFrameCrop.iLeftOffset;
ppDst[2] = ppDst[2] + pCtx->sFrameCrop.iTopOffset * pPic->iLinesize[1] + pCtx->sFrameCrop.iLeftOffset;
pDstInfo->eBufferProperty = BUFFER_HOST;
pDstInfo->iBufferStatus = 1;
return 0;
}
inline BOOL_T CheckSliceNeedReconstruct (int16_t iCurDid, int16_t iCurQid, bool_t bStoreRefBasePicFlag,
uint8_t uiDidMax, uint8_t uiLayerDqId, uint8_t uiTargetDqId) {
return ((iCurDid == uiDidMax) && (iCurQid == BASE_QUALITY_ID) && (bStoreRefBasePicFlag)) // store base
|| (uiLayerDqId == uiTargetDqId); // target layer
}
inline uint8_t GetTargetDqId (uint8_t uiTargetDqId, SDecodingParam* psParam) {
uint8_t uiRequiredDqId = psParam ? psParam->uiTargetDqLayer : (uint8_t)255;
return WELS_MIN (uiTargetDqId, uiRequiredDqId);
}
inline void_t HandleReferenceLostL0 (PWelsDecoderContext pCtx, PNalUnit pCurNal) {
if (0 == pCurNal->sNalHeaderExt.uiTemporalId) {
pCtx->bReferenceLostAtT0Flag = true;
}
#ifndef LONG_TERM_REF
if (pCtx->bReferenceLostAtT0Flag) {
ResetParameterSetsState (pCtx);
}
#endif
pCtx->iErrorCode |= dsBitstreamError;
}
inline void_t HandleReferenceLost (PWelsDecoderContext pCtx, PNalUnit pCurNal) {
if ((0 == pCurNal->sNalHeaderExt.uiTemporalId) || (1 == pCurNal->sNalHeaderExt.uiTemporalId)) {
pCtx->bReferenceLostAtT0Flag = true;
}
#ifndef LONG_TERM_REF
if (pCtx->bReferenceLostAtT0Flag) {
ResetParameterSetsState (pCtx);
}
#endif
pCtx->iErrorCode |= dsRefLost;
}
inline int32_t WelsDecodeConstructSlice (PWelsDecoderContext pCtx, PNalUnit pCurNal) {
int32_t iRet = WelsTargetSliceConstruction (pCtx);
if (iRet) {
HandleReferenceLostL0 (pCtx, pCurNal);
}
return iRet;
}
/*
* Predeclared function routines ..
*/
int32_t ParseRefPicListReordering (PBitStringAux pBs, PSliceHeader pSh) {
int32_t iList = 0;
const ESliceType keSt = pSh->eSliceType;
PRefPicListReorderSyn pRefPicListReordering = &pSh->pRefPicListReordering;
if (keSt == I_SLICE || keSt == SI_SLICE)
return ERR_NONE;
// Common syntaxs for P or B slices: list0, list1 followed if B slices used.
do {
pRefPicListReordering->bRefPicListReorderingFlag[iList] = !!BsGetOneBit (pBs);
if (pRefPicListReordering->bRefPicListReorderingFlag[iList]) {
int32_t iIdx = 0;
do {
const uint8_t kuiIdc = BsGetUe (pBs);
//Fixed the referrence list reordering crash issue.(fault kIdc value > 3 case)---
if ((iIdx >= MAX_REF_PIC_COUNT) || (kuiIdc > 3)) {
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_REF_REORDERING);
}
pRefPicListReordering->sReorderingSyn[iList][iIdx].uiReorderingOfPicNumsIdc = kuiIdc;
if (kuiIdc == 3)
break;
if (iIdx >= pSh->uiRefCount[iList] || iIdx >= MAX_REF_PIC_COUNT)
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_REF_REORDERING);
if (kuiIdc == 0 || kuiIdc == 1) {
pRefPicListReordering->sReorderingSyn[iList][iIdx].uiAbsDiffPicNumMinus1 = BsGetUe (pBs); // uiAbsDiffPicNumMinus1
} else if (kuiIdc == 2) {
pRefPicListReordering->sReorderingSyn[iList][iIdx].uiLongTermPicNum = BsGetUe (pBs);
}
++ iIdx;
} while (true);
}
if (keSt != B_SLICE)
break;
++ iList;
} while (iList < LIST_A);
return ERR_NONE;
}
int32_t ParseDecRefPicMarking (PWelsDecoderContext pCtx, PBitStringAux pBs, PSliceHeader pSh, PSps pSps,
const bool_t kbIdrFlag) {
PRefPicMarking const kpRefMarking = &pSh->sRefMarking;
if (kbIdrFlag) {
kpRefMarking->bNoOutputOfPriorPicsFlag = !!BsGetOneBit (pBs);
kpRefMarking->bLongTermRefFlag = !!BsGetOneBit (pBs);
} else {
kpRefMarking->bAdaptiveRefPicMarkingModeFlag = !!BsGetOneBit (pBs);
if (kpRefMarking->bAdaptiveRefPicMarkingModeFlag) {
int32_t iIdx = 0;
do {
const int32_t kiMmco = BsGetUe (pBs);
kpRefMarking->sMmcoRef[iIdx].uiMmcoType = kiMmco;
if (kiMmco == MMCO_END)
break;
if (kiMmco == MMCO_SHORT2UNUSED || kiMmco == MMCO_SHORT2LONG) {
kpRefMarking->sMmcoRef[iIdx].iDiffOfPicNum = 1 + BsGetUe (pBs);
kpRefMarking->sMmcoRef[iIdx].iShortFrameNum = (pSh->iFrameNum - kpRefMarking->sMmcoRef[iIdx].iDiffOfPicNum) & ((
1 << pSps->uiLog2MaxFrameNum) - 1);
} else if (kiMmco == MMCO_LONG2UNUSED)
kpRefMarking->sMmcoRef[iIdx].uiLongTermPicNum = BsGetUe (pBs);
if (kiMmco == MMCO_SHORT2LONG || kiMmco == MMCO_LONG) {
kpRefMarking->sMmcoRef[iIdx].iLongTermFrameIdx = BsGetUe (pBs);
} else if (kiMmco == MMCO_SET_MAX_LONG)
kpRefMarking->sMmcoRef[iIdx].iMaxLongTermFrameIdx = -1 + BsGetUe (pBs);
++ iIdx;
} while (iIdx < MAX_MMCO_COUNT);
}
}
return ERR_NONE;
}
bool_t FillDefaultSliceHeaderExt (PSliceHeaderExt pShExt, PNalUnitHeaderExt pNalExt) {
if (pShExt == NULL || pNalExt == NULL)
return false;
if (pNalExt->iNoInterLayerPredFlag || pNalExt->uiQualityId > 0)
pShExt->bBasePredWeightTableFlag = false;
else
pShExt->bBasePredWeightTableFlag = true;
pShExt->uiRefLayerDqId = (uint8_t) - 1;
pShExt->uiDisableInterLayerDeblockingFilterIdc = 0;
pShExt->iInterLayerSliceAlphaC0Offset = 0;
pShExt->iInterLayerSliceBetaOffset = 0;
pShExt->bConstrainedIntraResamplingFlag = false;
pShExt->uiRefLayerChromaPhaseXPlus1Flag = 0;
pShExt->uiRefLayerChromaPhaseYPlus1 = 1;
//memset(&pShExt->sScaledRefLayer, 0, sizeof(SPosOffset));
pShExt->iScaledRefLayerPicWidthInSampleLuma = pShExt->sSliceHeader.iMbWidth << 4;
pShExt->iScaledRefLayerPicHeightInSampleLuma = pShExt->sSliceHeader.iMbHeight << 4;
pShExt->bSliceSkipFlag = false;
pShExt->bAdaptiveBaseModeFlag = false;
pShExt->bDefaultBaseModeFlag = false;
pShExt->bAdaptiveMotionPredFlag = false;
pShExt->bDefaultMotionPredFlag = false;
pShExt->bAdaptiveResidualPredFlag = false;
pShExt->bDefaultResidualPredFlag = false;
pShExt->bTCoeffLevelPredFlag = false;
pShExt->uiScanIdxStart = 0;
pShExt->uiScanIdxEnd = 15;
return true;
}
/*
* WelsInitMemory
* Memory request for new introduced data
* Especially for:
* rbsp_au_buffer, cur_dq_layer_ptr and ref_dq_layer_ptr in MB info cache.
* return:
* 0 - success; otherwise returned error_no defined in error_no.h.
*/
int32_t WelsInitMemory (PWelsDecoderContext pCtx) {
if (pCtx == NULL) {
return ERR_INFO_INVALID_PTR;
}
if (MemInitNalList (&pCtx->pAccessUnitList, MAX_NAL_UNIT_NUM_IN_AU) != 0)
return ERR_INFO_OUT_OF_MEMORY;
if ((pCtx->sRawData.pHead = static_cast<uint8_t*> (WelsMalloc (MAX_ACCESS_UINT_CAPACITY,
"pCtx->sRawData->pHead"))) == NULL) {
return ERR_INFO_OUT_OF_MEMORY;
}
pCtx->sRawData.pStartPos =
pCtx->sRawData.pCurPos = pCtx->sRawData.pHead;
pCtx->sRawData.pEnd = pCtx->sRawData.pHead + MAX_ACCESS_UINT_CAPACITY;
pCtx->uiTargetDqId = (uint8_t) - 1;
pCtx->bEndOfStreamFlag = false;
pCtx->iImgWidthInPixel = 0;
pCtx->iImgHeightInPixel = 0;
return ERR_NONE;
}
/*
* WelsFreeMemory
* Free memory introduced in WelsInitMemory at destruction of decoder.
*
*/
void_t WelsFreeMemory (PWelsDecoderContext pCtx) {
if (pCtx == NULL)
return;
if (NULL != pCtx->pParam) {
WelsFree (pCtx->pParam, "pCtx->pParam");
pCtx->pParam = NULL;
}
MemFreeNalList (&pCtx->pAccessUnitList);
if (pCtx->sRawData.pHead) {
WelsFree (pCtx->sRawData.pHead, "pCtx->sRawData->pHead");
}
pCtx->sRawData.pHead = NULL;
pCtx->sRawData.pEnd = NULL;
pCtx->sRawData.pStartPos = NULL;
pCtx->sRawData.pCurPos = NULL;
}
/*
* DecodeNalHeaderExt
* Trigger condition: NAL_UNIT_TYPE = NAL_UNIT_PREFIX or NAL_UNIT_CODED_SLICE_EXT
* Parameter:
* pNal: target NALUnit ptr
* pSrc: NAL Unit bitstream
*/
void_t DecodeNalHeaderExt (PNalUnit pNal, uint8_t* pSrc) {
PNalUnitHeaderExt pHeaderExt = &pNal->sNalHeaderExt;
uint8_t uiCurByte = *pSrc;
pHeaderExt->bIdrFlag = !! (uiCurByte & 0x40);
pHeaderExt->uiPriorityId = uiCurByte & 0x3F;
uiCurByte = * (++pSrc);
pHeaderExt->iNoInterLayerPredFlag = uiCurByte >> 7;
pHeaderExt->uiDependencyId = (uiCurByte & 0x70) >> 4;
pHeaderExt->uiQualityId = uiCurByte & 0x0F;
uiCurByte = * (++pSrc);
pHeaderExt->uiTemporalId = uiCurByte >> 5;
pHeaderExt->bUseRefBasePicFlag = !! (uiCurByte & 0x10);
pHeaderExt->bDiscardableFlag = !! (uiCurByte & 0x08);
pHeaderExt->bOutputFlag = !! (uiCurByte & 0x04);
pHeaderExt->uiReservedThree2Bits = uiCurByte & 0x03;
pHeaderExt->uiLayerDqId = (pHeaderExt->uiDependencyId << 4) | pHeaderExt->uiQualityId;
}
#ifdef MOSAIC_AVOID_BASED_ON_SPS_PPS_ID
int32_t CheckPpsId (PWelsDecoderContext pCtx, PPps* ppPps, uint32_t uiPpsId) {
PPps pPpsList = pCtx->sPpsBuffer;
int32_t iPpsNum = pCtx->iPpsTotalNum;
int32_t i = 0;
if (iPpsNum <= 0) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckPpsId():::::PPS list is empty...NO PPS!!!\n");
return dsNoParamSets;
}
while (i < iPpsNum) {
if (uiPpsId == pPpsList[i].iPpsId) {
*ppPps = &pPpsList[i];
break;
} else {
++i;
}
}
if (i == iPpsNum) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckPpsId()::::::CAN NOT find the matching from the PPS List. iPpsId:%d\n",
uiPpsId);
return dsNoParamSets;
}
return 0;
}
int32_t CheckSpsId (PWelsDecoderContext pCtx, PSubsetSps* ppSubsetSps, PSps* ppSps, int32_t iSpsId,
bool_t bExtensionFlag) {
PSps pSpsList = pCtx->sSpsBuffer;
PSubsetSps pSubspsList = pCtx->sSubsetSpsBuffer;
int32_t iSpsNum = pCtx->iSpsTotalNum;
int32_t iSubspsNum = pCtx->iSubspsTotalNum;
int32_t i = 0;
if (bExtensionFlag) {
if (iSubspsNum <= 0) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckSpsId()::::SUBSPS list is empty....NO SUBSPS\n");
return dsNoParamSets;
}
while (i < iSubspsNum) {
if (iSpsId == pSubspsList[i].sSps.iSpsId) {
*ppSubsetSps = &pSubspsList[i];
*ppSps = &pSubspsList[i].sSps;
break;
} else {
++i;
}
}
if (i == iSubspsNum) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckSpsId()::::::CAN NOT find the matching from the SUBSPS List. iSpsId:%d\n",
iSpsId);
return dsNoParamSets;
}
} else {
if (iSpsNum <= 0) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckSpsId()::::SPS list is empty....NO SPS\n");
return dsNoParamSets;
}
while (i < iSpsNum) {
if (iSpsId == pSpsList[i].iSpsId) {
*ppSubsetSps = NULL;
*ppSps = &pSpsList[i];
break;
} else {
++i;
}
}
if (i == iSpsNum) {
pCtx->iErrorCode |= dsNoParamSets;
WelsLog (pCtx, WELS_LOG_WARNING, "CheckSpsId()::::::CAN NOT find the matching from the SPS List. iSpsId:%d\n", iSpsId);
return dsNoParamSets;
}
}
return 0;
}
#endif
/*
* decode_slice_header_avc
* Parse slice header of bitstream in avc for storing data structure
*/
int32_t ParseSliceHeaderSyntaxs (PWelsDecoderContext pCtx, PBitStringAux pBs, const bool_t kbExtensionFlag) {
PNalUnit const kpCurNal = pCtx->pAccessUnitList->pNalUnitsList[pCtx->pAccessUnitList->uiAvailUnitsNum - 1];
PNalUnitHeaderExt pNalHeaderExt = NULL;
PSliceHeader pSliceHead = NULL;
PSliceHeaderExt pSliceHeadExt = NULL;
PSubsetSps pSubsetSps = NULL;
PSps pSps = NULL;
PPps pPps = NULL;
ENalUnitType eNalType = static_cast<ENalUnitType> (0);
int32_t iPpsId = 0;
int32_t iRet = ERR_NONE;
uint8_t uiSliceType = 0;
uint8_t uiQualityId = BASE_QUALITY_ID;
bool_t bIdrFlag = false;
bool_t bSgChangeCycleInvolved = false; // involved slice group change cycle ?
if (kpCurNal == NULL) {
return ERR_INFO_OUT_OF_MEMORY;
}
pNalHeaderExt = &kpCurNal->sNalHeaderExt;
pSliceHead = &kpCurNal->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader;
eNalType = pNalHeaderExt->sNalUnitHeader.eNalUnitType;
pSliceHeadExt = &kpCurNal->sNalData.sVclNal.sSliceHeaderExt;
if (pSliceHeadExt) {
SRefBasePicMarking sBaseMarking;
const bool_t kbStoreRefBaseFlag = pSliceHeadExt->bStoreRefBasePicFlag;
memcpy (&sBaseMarking, &pSliceHeadExt->sRefBasePicMarking, sizeof (SRefBasePicMarking)); //confirmed_safe_unsafe_usage
memset (pSliceHeadExt, 0, sizeof (SSliceHeaderExt));
pSliceHeadExt->bStoreRefBasePicFlag = kbStoreRefBaseFlag;
memcpy (&pSliceHeadExt->sRefBasePicMarking, &sBaseMarking, sizeof (SRefBasePicMarking)); //confirmed_safe_unsafe_usage
}
kpCurNal->sNalData.sVclNal.bSliceHeaderExtFlag = kbExtensionFlag;
pSliceHead->iFirstMbInSlice = BsGetUe (pBs);
uiSliceType = BsGetUe (pBs);
if (uiSliceType > 9) {
WelsLog (pCtx, WELS_LOG_WARNING, "slice type too large (%d) at first_mb(%d)\n", uiSliceType,
pSliceHead->iFirstMbInSlice);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_SLICE_TYPE);
}
if (uiSliceType > 4)
uiSliceType -= 5;
if (kbExtensionFlag) {
if (uiSliceType > 2) {
WelsLog (pCtx, WELS_LOG_WARNING, "Invalid slice type(%d).\n", uiSliceType);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_SLICE_TYPE);
}
}
pSliceHead->eSliceType = static_cast <ESliceType> (uiSliceType);
iPpsId = BsGetUe (pBs);
if (iPpsId >= MAX_PPS_COUNT) {
WelsLog (pCtx, WELS_LOG_WARNING, "iPpsId out of range\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_PPS_ID_OVERFLOW);
}
#ifdef MOSAIC_AVOID_BASED_ON_SPS_PPS_ID
if (CheckPpsId (pCtx, &pPps, iPpsId)) {
return dsNoParamSets;
}
#else
pPps = &pCtx->sPpsBuffer[iPpsId];
#endif //MOSAIC_AVOID_BASED_ON_SPS_PPS_ID
if (pPps->uiNumSliceGroups == 0) {
WelsLog (pCtx, WELS_LOG_WARNING, "non existing PPS referenced\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_NO_PARAM_SETS);
}
if (pPps->iSpsId >= MAX_SPS_COUNT) {
WelsLog (pCtx, WELS_LOG_WARNING, "iSpsId out of range\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_SPS_ID_OVERFLOW);
}
#ifdef MOSAIC_AVOID_BASED_ON_SPS_PPS_ID
if (CheckSpsId (pCtx, &pSubsetSps, &pSps, pPps->iSpsId, kExtensionFlag)) {
return dsNoParamSets;
}
#else
if (kbExtensionFlag) {
pSubsetSps = &pCtx->sSubsetSpsBuffer[pPps->iSpsId];
pSps = &pSubsetSps->sSps;
} else {
pSps = &pCtx->sSpsBuffer[pPps->iSpsId];
}
pCtx->pSps = pSps;
#endif //MOSAIC_AVOID_BASED_ON_SPS_PPS_ID
pSliceHead->iPpsId = iPpsId;
pSliceHead->iSpsId = pPps->iSpsId;
pSliceHead->pPps = pPps;
pSliceHead->pSps = pSps;
pSliceHeadExt->pSubsetSps = pSubsetSps;
bIdrFlag = (!kbExtensionFlag && eNalType == NAL_UNIT_CODED_SLICE_IDR) || (kbExtensionFlag && pNalHeaderExt->bIdrFlag);
if (pSps->uiLog2MaxFrameNum == 0) {
WelsLog (pCtx, WELS_LOG_WARNING, "non existing SPS referenced\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_NO_PARAM_SETS);
}
pSliceHead->iFrameNum = BsGetBits (pBs, pSps->uiLog2MaxFrameNum);
pSliceHead->bFieldPicFlag = false;
pSliceHead->bBottomFiledFlag = false;
if (!pSps->bFrameMbsOnlyFlag) {
WelsLog (pCtx, WELS_LOG_WARNING, "ParseSliceHeaderSyntaxs(): frame_mbs_only_flag = %d not supported. \n",
pSps->bFrameMbsOnlyFlag);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_MBAFF);
}
pSliceHead->iMbWidth = pSps->iMbWidth;
pSliceHead->iMbHeight = pSps->iMbHeight / (1 + pSliceHead->bFieldPicFlag);
if (bIdrFlag) {
if (pSliceHead->iFrameNum != 0) {
WelsLog (pCtx, WELS_LOG_WARNING, "ParseSliceHeaderSyntaxs(), invaild frame number: %d due to IDR frame introduced!\n",
pSliceHead->iFrameNum);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_FRAME_NUM);
}
pSliceHead->uiIdrPicId = BsGetUe (pBs); /* uiIdrPicId */
#ifdef LONG_TERM_REF
pCtx->uiCurIdrPicId = pSliceHead->uiIdrPicId;
#endif
}
pSliceHead->iDeltaPicOrderCntBottom = 0;
pSliceHead->iDeltaPicOrderCnt[0] =
pSliceHead->iDeltaPicOrderCnt[1] = 0;
if (pSps->uiPocType == 0) {
pSliceHead->iPicOrderCntLsb = BsGetBits (pBs, pSps->iLog2MaxPocLsb);
if (pPps->bPicOrderPresentFlag && !pSliceHead->bFieldPicFlag) {
pSliceHead->iDeltaPicOrderCntBottom = BsGetSe (pBs);
}
} else if (pSps->uiPocType == 1 && !pSps->bDeltaPicOrderAlwaysZeroFlag) {
pSliceHead->iDeltaPicOrderCnt[0] = BsGetSe (pBs);
if (pPps->bPicOrderPresentFlag && !pSliceHead->bFieldPicFlag)
pSliceHead->iDeltaPicOrderCnt[1] = BsGetSe (pBs);
}
pSliceHead->iRedundantPicCnt = 0;
if (pPps->bRedundantPicCntPresentFlag) {
pSliceHead->iRedundantPicCnt = BsGetUe (pBs);
}
//set defaults, might be overriden a few line later
pSliceHead->uiRefCount[0] = pPps->uiNumRefIdxL0Active;
pSliceHead->uiRefCount[1] = pPps->uiNumRefIdxL1Active;
if (kbExtensionFlag) {
uiQualityId = pNalHeaderExt->uiQualityId;
if (BASE_QUALITY_ID == uiQualityId && (EP_SLICE == uiSliceType || EB_SLICE == uiSliceType)) {
const bool_t kbBipredFlag = (EB_SLICE == uiSliceType);
if (kbBipredFlag) {
WelsLog (pCtx, WELS_LOG_WARNING, "ParseSliceHeaderSyntaxs(): kbBipredFlag = 1 not supported.\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_BIPRED);
}
pSliceHead->bNumRefIdxActiveOverrideFlag = !!BsGetOneBit (pBs);
if (pSliceHead->bNumRefIdxActiveOverrideFlag) {
pSliceHead->uiRefCount[0] = 1 + BsGetUe (pBs);
}
}
} else if (uiSliceType == P_SLICE || uiSliceType == SP_SLICE || uiSliceType == B_SLICE) {
const bool_t kbBipredFlag = (B_SLICE == uiSliceType);
if (kbBipredFlag) {
WelsLog (pCtx, WELS_LOG_WARNING, "ParseSliceHeaderSyntaxs(): kbBipredFlag = 1 not supported.\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_BIPRED);
}
pSliceHead->bNumRefIdxActiveOverrideFlag = !!BsGetOneBit (pBs);
if (pSliceHead->bNumRefIdxActiveOverrideFlag) {
pSliceHead->uiRefCount[0] = 1 + BsGetUe (pBs);
}
}
if (pSliceHead->uiRefCount[0] > MAX_REF_PIC_COUNT || pSliceHead->uiRefCount[1] > MAX_REF_PIC_COUNT) {
WelsLog (pCtx, WELS_LOG_WARNING, "reference overflow\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_REF_COUNT_OVERFLOW);
}
if (BASE_QUALITY_ID == uiQualityId) {
iRet = ParseRefPicListReordering (pBs, pSliceHead);
if (iRet != ERR_NONE) {
WelsLog (pCtx, WELS_LOG_WARNING, "invalid ref pPic list reordering syntaxs!\n");
return iRet;
}
if (kbExtensionFlag) {
if (pNalHeaderExt->iNoInterLayerPredFlag || pNalHeaderExt->uiQualityId > 0)
pSliceHeadExt->bBasePredWeightTableFlag = false;
else
pSliceHeadExt->bBasePredWeightTableFlag = true;
}
if (kpCurNal->sNalHeaderExt.sNalUnitHeader.uiNalRefIdc != 0) {
iRet = ParseDecRefPicMarking (pCtx, pBs, pSliceHead, pSps, bIdrFlag);
if (iRet != ERR_NONE) {
return iRet;
}
if (kbExtensionFlag && !pSubsetSps->sSpsSvcExt.bSliceHeaderRestrictionFlag) {
pSliceHeadExt->bStoreRefBasePicFlag = !!BsGetOneBit (pBs);
if ((pNalHeaderExt->bUseRefBasePicFlag || pSliceHeadExt->bStoreRefBasePicFlag) && !bIdrFlag) {
WelsLog (pCtx, WELS_LOG_WARNING,
"ParseSliceHeaderSyntaxs(): bUseRefBasePicFlag or bStoreRefBasePicFlag = 1 not supported.\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_ILP);
}
}
}
}
if (pPps->bEntropyCodingModeFlag) {
WelsLog (pCtx, WELS_LOG_WARNING, "ParseSliceHeaderSyntaxs(): CABAC in Enhancement layer not supported.\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_CABAC_EL);
}
pSliceHead->iSliceQpDelta = BsGetSe (pBs);
pSliceHead->iSliceQp = pPps->iPicInitQp + pSliceHead->iSliceQpDelta;
if (pSliceHead->iSliceQp < 0 || pSliceHead->iSliceQp > 51) {
WelsLog (pCtx, WELS_LOG_WARNING, "QP %d out of range\n", pSliceHead->iSliceQp);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_INVALID_QP);
}
//FIXME qscale / qp ... stuff
if (!kbExtensionFlag) {
if (uiSliceType == SP_SLICE || uiSliceType == SI_SLICE) {
WelsLog (pCtx, WELS_LOG_WARNING, "SP/SI not supported\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_SPSI);
}
}
pSliceHead->uiDisableDeblockingFilterIdc = 0;
pSliceHead->iSliceAlphaC0Offset = 0;
pSliceHead->iSliceBetaOffset = 0;
if (pPps->bDeblockingFilterControlPresentFlag) {
pSliceHead->uiDisableDeblockingFilterIdc = BsGetUe (pBs);
//refer to JVT-X201wcm1.doc G.7.4.3.4--2010.4.20
if (pSliceHead->uiDisableDeblockingFilterIdc > 6) {
WelsLog (pCtx, WELS_LOG_WARNING, "disable_deblock_filter_idc (%d) out of range [0, 6]\n",
pSliceHead->uiDisableDeblockingFilterIdc);
return ERR_INFO_INVALID_DBLOCKING_IDC;
}
if (pSliceHead->uiDisableDeblockingFilterIdc != 1) {
pSliceHead->iSliceAlphaC0Offset = BsGetSe (pBs) << 1; // slice_alpha_c0_offset_div2
pSliceHead->iSliceBetaOffset = BsGetSe (pBs) << 1; // iSliceBetaOffset
}
}
bSgChangeCycleInvolved = (pPps->uiNumSliceGroups > 1 && pPps->uiSliceGroupMapType >= 3
&& pPps->uiSliceGroupMapType <= 5);
if (kbExtensionFlag && bSgChangeCycleInvolved)
bSgChangeCycleInvolved = (bSgChangeCycleInvolved && (uiQualityId == BASE_QUALITY_ID));
if (bSgChangeCycleInvolved) {
if (pPps->uiSliceGroupChangeRate > 0) {
const int32_t kiNumBits = (int32_t)WELS_CEIL (log (static_cast<double> (1 + pPps->uiPicSizeInMapUnits /
pPps->uiSliceGroupChangeRate)));
pSliceHead->iSliceGroupChangeCycle = BsGetBits (pBs, kiNumBits); // For FMO extra types
} else
pSliceHead->iSliceGroupChangeCycle = 0;
}
if (!kbExtensionFlag) {
FillDefaultSliceHeaderExt (pSliceHeadExt, pNalHeaderExt);
} else {
/* Extra syntax elements newly introduced */
pSliceHeadExt->pSubsetSps = pSubsetSps;
if (!pNalHeaderExt->iNoInterLayerPredFlag && BASE_QUALITY_ID == uiQualityId) {
//the following should be deleted for CODE_CLEAN
pSliceHeadExt->uiRefLayerDqId = BsGetUe (pBs);
if (pSubsetSps->sSpsSvcExt.bInterLayerDeblockingFilterCtrlPresentFlag) {
pSliceHeadExt->uiDisableInterLayerDeblockingFilterIdc = BsGetUe (pBs);
//refer to JVT-X201wcm1.doc G.7.4.3.4--2010.4.20
if (pSliceHeadExt->uiDisableInterLayerDeblockingFilterIdc > 6) {
WelsLog (pCtx, WELS_LOG_WARNING, "disable_inter_layer_deblock_filter_idc (%d) out of range [0, 6]\n",
pSliceHeadExt->uiDisableInterLayerDeblockingFilterIdc);
return ERR_INFO_INVALID_DBLOCKING_IDC;
}
if (pSliceHeadExt->uiDisableInterLayerDeblockingFilterIdc != 1) {
pSliceHeadExt->iInterLayerSliceAlphaC0Offset = BsGetSe (pBs) << 1;
pSliceHeadExt->iInterLayerSliceBetaOffset = BsGetSe (pBs) << 1;
}
}
pSliceHeadExt->uiRefLayerChromaPhaseXPlus1Flag = pSubsetSps->sSpsSvcExt.uiSeqRefLayerChromaPhaseXPlus1Flag;
pSliceHeadExt->uiRefLayerChromaPhaseYPlus1 = pSubsetSps->sSpsSvcExt.uiSeqRefLayerChromaPhaseYPlus1;
pSliceHeadExt->bConstrainedIntraResamplingFlag = !!BsGetOneBit (pBs);
{
SPosOffset pos;
pos.iLeftOffset = pSubsetSps->sSpsSvcExt.sSeqScaledRefLayer.iLeftOffset;
pos.iTopOffset = pSubsetSps->sSpsSvcExt.sSeqScaledRefLayer.iTopOffset * (2 - pSps->bFrameMbsOnlyFlag);
pos.iRightOffset = pSubsetSps->sSpsSvcExt.sSeqScaledRefLayer.iRightOffset;
pos.iBottomOffset = pSubsetSps->sSpsSvcExt.sSeqScaledRefLayer.iBottomOffset * (2 - pSps->bFrameMbsOnlyFlag);
//memcpy(&pSliceHeadExt->sScaledRefLayer, &pos, sizeof(SPosOffset));//confirmed_safe_unsafe_usage
pSliceHeadExt->iScaledRefLayerPicWidthInSampleLuma = (pSliceHead->iMbWidth << 4) - (pos.iLeftOffset + pos.iRightOffset);
pSliceHeadExt->iScaledRefLayerPicHeightInSampleLuma = (pSliceHead->iMbHeight << 4) -
(pos.iTopOffset + pos.iBottomOffset) / (1 + pSliceHead->bFieldPicFlag);
}
} else if (uiQualityId > BASE_QUALITY_ID) {
WelsLog (pCtx, WELS_LOG_WARNING, "MGS not supported.\n");
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_MGS);
pSliceHeadExt->uiRefLayerDqId = pNalHeaderExt->uiLayerDqId - 1;
} else {
pSliceHeadExt->uiRefLayerDqId = (uint8_t) - 1;
}
pSliceHeadExt->bSliceSkipFlag = false;
pSliceHeadExt->bAdaptiveBaseModeFlag = false;
pSliceHeadExt->bDefaultBaseModeFlag = false;
pSliceHeadExt->bAdaptiveMotionPredFlag = false;
pSliceHeadExt->bDefaultMotionPredFlag = false;
pSliceHeadExt->bAdaptiveResidualPredFlag = false;
pSliceHeadExt->bDefaultResidualPredFlag = false;
if (pNalHeaderExt->iNoInterLayerPredFlag)
pSliceHeadExt->bTCoeffLevelPredFlag = false;
else
pSliceHeadExt->bTCoeffLevelPredFlag = pSubsetSps->sSpsSvcExt.bSeqTCoeffLevelPredFlag;
if (!pNalHeaderExt->iNoInterLayerPredFlag) {
pSliceHeadExt->bSliceSkipFlag = !!BsGetOneBit (pBs);
if (pSliceHeadExt->bSliceSkipFlag) {
pSliceHeadExt->uiNumMbsInSlice = 1 + BsGetUe (pBs);
} else {
pSliceHeadExt->bAdaptiveBaseModeFlag = !!BsGetOneBit (pBs);
if (!pSliceHeadExt->bAdaptiveBaseModeFlag) {
pSliceHeadExt->bDefaultBaseModeFlag = !!BsGetOneBit (pBs);
}
if (!pSliceHeadExt->bDefaultBaseModeFlag) {
pSliceHeadExt->bAdaptiveMotionPredFlag = !!BsGetOneBit (pBs);
if (!pSliceHeadExt->bAdaptiveMotionPredFlag)
pSliceHeadExt->bDefaultMotionPredFlag = !!BsGetOneBit (pBs);
}
pSliceHeadExt->bAdaptiveResidualPredFlag = !!BsGetOneBit (pBs);
if (!pSliceHeadExt->bAdaptiveResidualPredFlag) {
pSliceHeadExt->bDefaultResidualPredFlag = !!BsGetOneBit (pBs);
}
}
if (pSubsetSps->sSpsSvcExt.bAdaptiveTCoeffLevelPredFlag)
pSliceHeadExt->bTCoeffLevelPredFlag = !!BsGetOneBit (pBs);
}
if (!pSubsetSps->sSpsSvcExt.bSliceHeaderRestrictionFlag) {
pSliceHeadExt->uiScanIdxStart = BsGetBits (pBs, 4);
pSliceHeadExt->uiScanIdxEnd = BsGetBits (pBs, 4);
if (pSliceHeadExt->uiScanIdxStart != 0 || pSliceHeadExt->uiScanIdxEnd != 15) {
WelsLog (pCtx, WELS_LOG_WARNING, "uiScanIdxStart (%d) != 0 and uiScanIdxEnd (%d) !=15 not supported here\n",
pSliceHeadExt->uiScanIdxStart, pSliceHeadExt->uiScanIdxEnd);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_UNSUPPORTED_MGS);
}
} else {
pSliceHeadExt->uiScanIdxStart = 0;
pSliceHeadExt->uiScanIdxEnd = 15;
}
}
return ERR_NONE;
}
/*
* Copy relative syntax elements of NALUnitHeaderExt, sRefPicBaseMarking and bStoreRefBasePicFlag in prefix nal unit.
* pSrc: mark as decoded prefix NAL
* ppDst: succeeded VCL NAL based AVC (I/P Slice)
*/
bool_t PrefetchNalHeaderExtSyntax (PWelsDecoderContext pCtx, PNalUnit const kppDst, PNalUnit const kpSrc) {
PNalUnitHeaderExt pNalHdrExtD = NULL, pNalHdrExtS = NULL;
PSliceHeaderExt pShExtD = NULL;
PPrefixNalUnit pPrefixS = NULL;
PSps pSps = NULL;
int32_t iIdx = 0;
if (kppDst == NULL || kpSrc == NULL)
return false;
pNalHdrExtD = &kppDst->sNalHeaderExt;
pNalHdrExtS = &kpSrc->sNalHeaderExt;
pShExtD = &kppDst->sNalData.sVclNal.sSliceHeaderExt;
pPrefixS = &kpSrc->sNalData.sPrefixNal;
pSps = &pCtx->sSpsBuffer[pCtx->sPpsBuffer[pShExtD->sSliceHeader.iPpsId].iSpsId];
pNalHdrExtD->uiDependencyId = pNalHdrExtS->uiDependencyId;
pNalHdrExtD->uiQualityId = pNalHdrExtS->uiQualityId;
pNalHdrExtD->uiTemporalId = pNalHdrExtS->uiTemporalId;
pNalHdrExtD->uiPriorityId = pNalHdrExtS->uiPriorityId;
pNalHdrExtD->bIdrFlag = pNalHdrExtS->bIdrFlag;
pNalHdrExtD->iNoInterLayerPredFlag = pNalHdrExtS->iNoInterLayerPredFlag;
pNalHdrExtD->bDiscardableFlag = pNalHdrExtS->bDiscardableFlag;
pNalHdrExtD->bOutputFlag = pNalHdrExtS->bOutputFlag;
pNalHdrExtD->bUseRefBasePicFlag = pNalHdrExtS->bUseRefBasePicFlag;
pNalHdrExtD->uiLayerDqId = pNalHdrExtS->uiLayerDqId;
pShExtD->bStoreRefBasePicFlag = pPrefixS->bStoreRefBasePicFlag;
memcpy (&pShExtD->sRefBasePicMarking, &pPrefixS->sRefPicBaseMarking,
sizeof (SRefBasePicMarking)); //confirmed_safe_unsafe_usage
if (pShExtD->sRefBasePicMarking.bAdaptiveRefBasePicMarkingModeFlag) {
PRefBasePicMarking pRefBasePicMarking = &pShExtD->sRefBasePicMarking;
iIdx = 0;
do {
if (pRefBasePicMarking->mmco_base[iIdx].uiMmcoType == MMCO_END)
break;
if (pRefBasePicMarking->mmco_base[iIdx].uiMmcoType == MMCO_SHORT2UNUSED)
pRefBasePicMarking->mmco_base[iIdx].iShortFrameNum = (pShExtD->sSliceHeader.iFrameNum -
pRefBasePicMarking->mmco_base[iIdx].uiDiffOfPicNums) & ((1 << pSps->uiLog2MaxFrameNum) - 1);
++ iIdx;
} while (iIdx < MAX_MMCO_COUNT);
}
return true;
}
int32_t UpdateAccessUnit (PWelsDecoderContext pCtx) {
PAccessUnit pCurAu = pCtx->pAccessUnitList;
int32_t iIdx = pCurAu->uiEndPos;
// Conversed iterator
pCtx->uiTargetDqId = pCurAu->pNalUnitsList[iIdx]->sNalHeaderExt.uiLayerDqId;
pCurAu->uiActualUnitsNum = iIdx + 1;
pCurAu->bCompletedAuFlag = true;
// Added for mosaic avoidance, 11/19/2009
#ifdef LONG_TERM_REF
if (pCtx->bParamSetsLostFlag)
#else
if (pCtx->bReferenceLostAtT0Flag)
#endif
{
uint32_t uiActualIdx = 0;
while (uiActualIdx < pCurAu->uiActualUnitsNum) {
PNalUnit nal = pCurAu->pNalUnitsList[uiActualIdx];
if (nal->sNalHeaderExt.sNalUnitHeader.eNalUnitType == NAL_UNIT_CODED_SLICE_IDR || nal->sNalHeaderExt.bIdrFlag) {
break;
}
++ uiActualIdx;
}
if (uiActualIdx ==
pCurAu->uiActualUnitsNum) { // no found IDR nal within incoming AU, need exit to avoid mosaic issue, 11/19/2009
WelsLog (pCtx, WELS_LOG_WARNING, "UpdateAccessUnit():::::Key frame lost.....CAN NOT find IDR from current AU.\n");
#ifdef LONG_TERM_REF
pCtx->iErrorCode |= dsNoParamSets;
return dsNoParamSets;
#else
pCtx->iErrorCode |= dsRefLost;
return ERR_INFO_REFERENCE_PIC_LOST;
#endif
}
}
return ERR_NONE;
}
int32_t InitialDqLayersContext (PWelsDecoderContext pCtx, const int32_t kiMaxWidth, const int32_t kiMaxHeight) {
const int32_t kiPicStride = ((kiMaxWidth + 15) & 0xfffff0) + (PADDING_LENGTH << 1);
const int32_t kiPicLines = ((kiMaxHeight + 15) & 0xfffff0);
int32_t i = 0;
WELS_VERIFY_RETURN_IF (ERR_INFO_INVALID_PARAM, (NULL == pCtx || kiMaxWidth <= 0 || kiMaxHeight <= 0))
pCtx->sMb.iMbWidth = (kiMaxWidth + 15) >> 4;
pCtx->sMb.iMbHeight = (kiMaxHeight + 15) >> 4;
if (pCtx->bInitialDqLayersMem && kiMaxWidth <= pCtx->iPicWidthReq
&& kiMaxHeight <= pCtx->iPicHeightReq) // have same dimension memory, skipped
return ERR_NONE;
UninitialDqLayersContext (pCtx);
do {
PDqLayer pDq = (PDqLayer)WelsMalloc (sizeof (SDqLayer), "PDqLayer");
int32_t iPlaneIdx = 0;
if (pDq == NULL)
return ERR_INFO_OUT_OF_MEMORY;
memset (pDq, 0, sizeof (SDqLayer));
if (pCtx->iDecoderMode == SW_MODE) {
do {
const int32_t kiHshift = iPlaneIdx ? 1 : 0;
const int32_t kiVshift = kiHshift;
const int32_t kiStride = WELS_ALIGN ((kiPicStride >> kiHshift), (16 << (1 - kiHshift)));
const int32_t kiLine = (kiPicLines + (PADDING_LENGTH << 1)) >> kiVshift;
const int32_t kiSize = kiStride * kiLine;
pCtx->pCsListXchg[i][iPlaneIdx] = (uint8_t*)WelsMalloc (kiSize * sizeof (uint8_t), "pCtx->pCsListXchg[][]");
WELS_VERIFY_RETURN_IF (ERR_INFO_OUT_OF_MEMORY, (NULL == pCtx->pCsListXchg[i][iPlaneIdx]))
pCtx->iCsStride[iPlaneIdx] = kiStride;
pCtx->pRsListXchg[i][iPlaneIdx] = (int16_t*)WelsMalloc (kiSize * sizeof (int16_t), "pCtx->pRsListXchg[][]");
WELS_VERIFY_RETURN_IF (ERR_INFO_OUT_OF_MEMORY , (NULL == pCtx->pRsListXchg[i][iPlaneIdx]))
pCtx->iRsStride[iPlaneIdx] = kiStride;
++ iPlaneIdx;
} while (iPlaneIdx < 3);
pCtx->sMb.pMbType[i] = (int8_t*)WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pMbType[]");
pCtx->sMb.pMv[i][0] = (int16_t (*)[16][2])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (
int16_t) * MV_A * MB_BLOCK4x4_NUM, "pCtx->sMb.pMv[][]");
pCtx->sMb.pRefIndex[i][0] = (int8_t (*)[MB_BLOCK4x4_NUM])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (
int8_t) * MB_BLOCK4x4_NUM, "pCtx->sMb.pRefIndex[][]");
pCtx->sMb.pLumaQp[i] = (int8_t*)WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pLumaQp[]");
pCtx->sMb.pChromaQp[i] = (int8_t*)WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pChromaQp[]");
pCtx->sMb.pNzc[i] = (int8_t (*)[24])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t) * 24,
"pCtx->sMb.pNzc[]");
pCtx->sMb.pNzcRs[i] = (int8_t (*)[24])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t) * 24,
"pCtx->sMb.pNzcRs[]");
pCtx->sMb.pScaledTCoeff[i] = (int16_t (*)[MB_COEFF_LIST_SIZE])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight *
sizeof (int16_t) * MB_COEFF_LIST_SIZE, "pCtx->sMb.pScaledTCoeff[]");
pCtx->sMb.pIntraPredMode[i] = (int8_t (*)[8])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t) * 8,
"pCtx->sMb.pIntraPredMode[]");
pCtx->sMb.pIntra4x4FinalMode[i] = (int8_t (*)[MB_BLOCK4x4_NUM])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight *
sizeof (int8_t) * MB_BLOCK4x4_NUM, "pCtx->sMb.pIntra4x4FinalMode[]");
pCtx->sMb.pChromaPredMode[i] = (int8_t*)WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pChromaPredMode[]");
pCtx->sMb.pCbp[i] = (int8_t*)WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pCbp[]");
pCtx->sMb.pSubMbType[i] = (int8_t (*)[MB_PARTITION_SIZE])WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (
int8_t) * MB_PARTITION_SIZE, "pCtx->sMb.pSubMbType[]");
pCtx->sMb.pSliceIdc[i] = (int32_t*) WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int32_t),
"pCtx->sMb.pSliceIdc[]"); // using int32_t for slice_idc, 4/21/2010
if (pCtx->sMb.pSliceIdc[i] != NULL)
memset (pCtx->sMb.pSliceIdc[i], 0xff, (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int32_t)));
pCtx->sMb.pResidualPredFlag[i] = (int8_t*) WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int8_t),
"pCtx->sMb.pResidualPredFlag[]");
//pCtx->sMb.pMotionPredFlag[i] = (uint8_t *) WelsMalloc(pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof(uint8_t), "pCtx->sMb.pMotionPredFlag[]");
pCtx->sMb.pInterPredictionDoneFlag[i] = (int8_t*) WelsMalloc (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (
int8_t), "pCtx->sMb.pInterPredictionDoneFlag[]");
// check memory block valid due above allocated..
WELS_VERIFY_RETURN_IF (ERR_INFO_OUT_OF_MEMORY,
((NULL == pCtx->sMb.pMbType[i]) ||
(NULL == pCtx->sMb.pMv[i][0]) ||
(NULL == pCtx->sMb.pRefIndex[i][0]) ||
(NULL == pCtx->sMb.pLumaQp[i]) ||
(NULL == pCtx->sMb.pChromaQp[i]) ||
(NULL == pCtx->sMb.pNzc[i]) ||
(NULL == pCtx->sMb.pNzcRs[i]) ||
(NULL == pCtx->sMb.pScaledTCoeff[i]) ||
(NULL == pCtx->sMb.pIntraPredMode[i]) ||
(NULL == pCtx->sMb.pIntra4x4FinalMode[i]) ||
(NULL == pCtx->sMb.pChromaPredMode[i]) ||
(NULL == pCtx->sMb.pCbp[i]) ||
(NULL == pCtx->sMb.pSubMbType[i]) ||
(NULL == pCtx->sMb.pSliceIdc[i]) ||
(NULL == pCtx->sMb.pResidualPredFlag[i]) ||
(NULL == pCtx->sMb.pInterPredictionDoneFlag[i])
)
)
} // end of if(pCtx->iDecoderMode == SW_MODE)
pCtx->pDqLayersList[i] = pDq;
++ i;
} while (i < LAYER_NUM_EXCHANGEABLE);
pCtx->bInitialDqLayersMem = true;
pCtx->iPicWidthReq = kiMaxWidth;
pCtx->iPicHeightReq = kiMaxHeight;
return ERR_NONE;
}
void_t UninitialDqLayersContext (PWelsDecoderContext pCtx) {
int32_t i = 0;
int32_t j = 0;
do {
PDqLayer pDq = pCtx->pDqLayersList[i];
if (pDq == NULL) {
++ i;
continue;
}
if (pCtx->pCsListXchg[i]) { // cs picture
j = 0;
do {
if (NULL != pCtx->pCsListXchg[i][j]) {
WelsFree (pCtx->pCsListXchg[i][j], "pCtx->pCsListXchg[][]");
pCtx->pCsListXchg[i][j] = NULL;
}
pCtx->iCsStride[j] = 0;
++ j;
} while (j < 3);
pDq->pCsData[i] = NULL; // for safe
pDq->iCsStride[i] = 0;
}
if (pCtx->pRsListXchg[i]) {
j = 0;
do {
if (NULL != pCtx->pRsListXchg[i][j]) {
WelsFree (pCtx->pRsListXchg[i][j], "pCtx->pRsListXchg[][]");
pCtx->pRsListXchg[i][j] = NULL;
}
pCtx->iRsStride[j] = 0;
++ j;
} while (j < 3);
}
if (pCtx->sMb.pMbType[i]) {
WelsFree (pCtx->sMb.pMbType[i], "pCtx->sMb.pMbType[]");
pCtx->sMb.pMbType[i] = NULL;
}
if (pCtx->sMb.pMv[i][0]) {
WelsFree (pCtx->sMb.pMv[i][0], "pCtx->sMb.pMv[][]");
pCtx->sMb.pMv[i][0] = NULL;
}
if (pCtx->sMb.pRefIndex[i][0]) {
WelsFree (pCtx->sMb.pRefIndex[i][0], "pCtx->sMb.pRefIndex[][]");
pCtx->sMb.pRefIndex[i][0] = NULL;
}
if (pCtx->sMb.pLumaQp[i]) {
WelsFree (pCtx->sMb.pLumaQp[i], "pCtx->sMb.pLumaQp[]");
pCtx->sMb.pLumaQp[i] = NULL;
}
if (pCtx->sMb.pChromaQp[i]) {
WelsFree (pCtx->sMb.pChromaQp[i], "pCtx->sMb.pChromaQp[]");
pCtx->sMb.pChromaQp[i] = NULL;
}
if (pCtx->sMb.pNzc[i]) {
WelsFree (pCtx->sMb.pNzc[i], "pCtx->sMb.pNzc[]");
pCtx->sMb.pNzc[i] = NULL;
}
if (pCtx->sMb.pNzcRs[i]) {
WelsFree (pCtx->sMb.pNzcRs[i], "pCtx->sMb.pNzcRs[]");
pCtx->sMb.pNzcRs[i] = NULL;
}
if (pCtx->sMb.pScaledTCoeff[i]) {
WelsFree (pCtx->sMb.pScaledTCoeff[i], "pCtx->sMb.pScaledTCoeff[]");
pCtx->sMb.pScaledTCoeff[i] = NULL;
}
if (pCtx->sMb.pIntraPredMode[i]) {
WelsFree (pCtx->sMb.pIntraPredMode[i], "pCtx->sMb.pIntraPredMode[]");
pCtx->sMb.pIntraPredMode[i] = NULL;
}
if (pCtx->sMb.pIntra4x4FinalMode[i]) {
WelsFree (pCtx->sMb.pIntra4x4FinalMode[i], "pCtx->sMb.pIntra4x4FinalMode[]");
pCtx->sMb.pIntra4x4FinalMode[i] = NULL;
}
if (pCtx->sMb.pChromaPredMode[i]) {
WelsFree (pCtx->sMb.pChromaPredMode[i], "pCtx->sMb.pChromaPredMode[]");
pCtx->sMb.pChromaPredMode[i] = NULL;
}
if (pCtx->sMb.pCbp[i]) {
WelsFree (pCtx->sMb.pCbp[i], "pCtx->sMb.pCbp[]");
pCtx->sMb.pCbp[i] = NULL;
}
// if (pCtx->sMb.pMotionPredFlag[i])
//{
// WelsFree( pCtx->sMb.pMotionPredFlag[i], "pCtx->sMb.pMotionPredFlag[]" );
// pCtx->sMb.pMotionPredFlag[i] = NULL;
//}
if (pCtx->sMb.pSubMbType[i]) {
WelsFree (pCtx->sMb.pSubMbType[i], "pCtx->sMb.pSubMbType[]");
pCtx->sMb.pSubMbType[i] = NULL;
}
if (pCtx->sMb.pSliceIdc[i]) {
WelsFree (pCtx->sMb.pSliceIdc[i], "pCtx->sMb.pSliceIdc[]");
pCtx->sMb.pSliceIdc[i] = NULL;
}
if (pCtx->sMb.pResidualPredFlag[i]) {
WelsFree (pCtx->sMb.pResidualPredFlag[i], "pCtx->sMb.pResidualPredFlag[]");
pCtx->sMb.pResidualPredFlag[i] = NULL;
}
if (pCtx->sMb.pInterPredictionDoneFlag[i]) {
WelsFree (pCtx->sMb.pInterPredictionDoneFlag[i], "pCtx->sMb.pInterPredictionDoneFlag[]");
pCtx->sMb.pInterPredictionDoneFlag[i] = NULL;
}
WelsFree (pDq, "pDq");
pDq = NULL;
pCtx->pDqLayersList[i] = NULL;
++ i;
} while (i < LAYER_NUM_EXCHANGEABLE);
pCtx->iPicWidthReq = 0;
pCtx->iPicHeightReq = 0;
pCtx->bInitialDqLayersMem = false;
}
void_t ResetCurrentAccessUnit (PWelsDecoderContext pCtx) {
PAccessUnit pCurAu = pCtx->pAccessUnitList;
pCurAu->uiEndPos = 0;
pCurAu->bCompletedAuFlag = false;
if (pCurAu->uiActualUnitsNum > 0) {
uint32_t iIdx = 0;
const uint32_t kuiActualNum = pCurAu->uiActualUnitsNum;
// a more simpler method to do nal units list management prefered here
const uint32_t kuiAvailNum = pCurAu->uiAvailUnitsNum;
const uint32_t kuiLeftNum = kuiAvailNum - kuiActualNum;
// Swapping active nal unit nodes of succeeding AU with leading of list
while (iIdx < kuiLeftNum) {
PNalUnit t = pCurAu->pNalUnitsList[kuiActualNum + iIdx];
pCurAu->pNalUnitsList[kuiActualNum + iIdx] = pCurAu->pNalUnitsList[iIdx];
pCurAu->pNalUnitsList[iIdx] = t;
++ iIdx;
}
pCurAu->uiActualUnitsNum = pCurAu->uiAvailUnitsNum = kuiLeftNum;
}
}
/*!
* \brief Force reset current Acess Unit Nal list in case error parsing/decoding in current AU
* \author
* \history 11/16/2009
*/
void_t ForceResetCurrentAccessUnit (PAccessUnit pAu) {
uint32_t uiSucAuIdx = pAu->uiEndPos + 1;
uint32_t uiCurAuIdx = 0;
// swap the succeeding AU's nal units to the front
while (uiSucAuIdx < pAu->uiAvailUnitsNum) {
PNalUnit t = pAu->pNalUnitsList[uiSucAuIdx];
pAu->pNalUnitsList[uiSucAuIdx] = pAu->pNalUnitsList[uiCurAuIdx];
pAu->pNalUnitsList[uiCurAuIdx] = t;
++ uiSucAuIdx;
++ uiCurAuIdx;
}
// Update avail/actual units num accordingly for next AU parsing
if (pAu->uiAvailUnitsNum > pAu->uiEndPos)
pAu->uiAvailUnitsNum -= (pAu->uiEndPos + 1);
else
pAu->uiAvailUnitsNum = 0;
pAu->uiActualUnitsNum = 0;
pAu->uiEndPos = 0;
pAu->bCompletedAuFlag = false;
}
//clear current corrupted NAL from pNalUnitsList
void_t ForceClearCurrentNal (PAccessUnit pAu) {
if (pAu->uiAvailUnitsNum > 0)
-- pAu->uiAvailUnitsNum;
}
void_t CheckAvailNalUnitsListContinuity (PWelsDecoderContext pCtx, int32_t iStartIdx, int32_t iEndIdx) {
PAccessUnit pCurAu = pCtx->pAccessUnitList;
uint8_t uiLastNuDependencyId, uiLastNuLayerDqId;
uint8_t uiCurNuDependencyId, uiCurNuQualityId, uiCurNuLayerDqId, uiCurNuRefLayerDqId;
int32_t iCurNalUnitIdx = 0;
//check the continuity of pNalUnitsList forwards (from pIdxNoInterLayerPred to end_postion)
uiLastNuDependencyId = pCurAu->pNalUnitsList[iStartIdx]->sNalHeaderExt.uiDependencyId;//starting nal unit
uiLastNuLayerDqId = pCurAu->pNalUnitsList[iStartIdx]->sNalHeaderExt.uiLayerDqId;//starting nal unit
iCurNalUnitIdx = iStartIdx + 1;//current nal unit
while (iCurNalUnitIdx <= iEndIdx) {
uiCurNuDependencyId = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalHeaderExt.uiDependencyId;
uiCurNuQualityId = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalHeaderExt.uiQualityId;
uiCurNuLayerDqId = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalHeaderExt.uiLayerDqId;
uiCurNuRefLayerDqId = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalData.sVclNal.sSliceHeaderExt.uiRefLayerDqId;
if (uiCurNuDependencyId == uiLastNuDependencyId) {
uiLastNuLayerDqId = uiCurNuLayerDqId;
++ iCurNalUnitIdx;
} else { //uiCurNuDependencyId != uiLastNuDependencyId, new dependency arrive
if (uiCurNuQualityId == 0) {
uiLastNuDependencyId = uiCurNuDependencyId;
if (uiCurNuRefLayerDqId == uiLastNuLayerDqId) {
uiLastNuLayerDqId = uiCurNuLayerDqId;
++ iCurNalUnitIdx;
} else { //cur_nu_layer_id != next_nu_ref_layer_dq_id, the chain is broken at this point
break;
}
} else { //new dependency arrive, but no base quality layer, so we must stop in this point
break;
}
}
}
-- iCurNalUnitIdx;
pCurAu->uiEndPos = iCurNalUnitIdx;
pCtx->uiTargetDqId = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalHeaderExt.uiLayerDqId;
}
//main purpose: to support multi-slice and to include all slice which have the same uiDependencyId, uiQualityId and frame_num
//for single slice, pIdxNoInterLayerPred SHOULD NOT be modified
void_t RefineIdxNoInterLayerPred (PAccessUnit pCurAu, int32_t* pIdxNoInterLayerPred) {
int32_t iLastNalDependId = pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalHeaderExt.uiDependencyId;
int32_t iLastNalQualityId = pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalHeaderExt.uiQualityId;
uint8_t uiLastNalTId = pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalHeaderExt.uiTemporalId;
int32_t iLastNalFrameNum =
pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iFrameNum;
int32_t iLastNalPoc =
pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iPicOrderCntLsb;
int32_t iLastNalFirstMb =
pCurAu->pNalUnitsList[*pIdxNoInterLayerPred]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iFirstMbInSlice;
int32_t iCurNalDependId, iCurNalQualityId, iCurNalTId, iCurNalFrameNum, iCurNalPoc, iCurNalFirstMb, iCurIdx,
iFinalIdxNoInterLayerPred;
bool_t bMultiSliceFind = false;
iFinalIdxNoInterLayerPred = 0;
iCurIdx = *pIdxNoInterLayerPred - 1;
while (iCurIdx >= 0) {
if (pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.iNoInterLayerPredFlag) {
iCurNalDependId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiDependencyId;
iCurNalQualityId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiQualityId;
iCurNalTId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiTemporalId;
iCurNalFrameNum = pCurAu->pNalUnitsList[iCurIdx]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iFrameNum;
iCurNalPoc = pCurAu->pNalUnitsList[iCurIdx]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iPicOrderCntLsb;
iCurNalFirstMb = pCurAu->pNalUnitsList[iCurIdx]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iFirstMbInSlice;
if (iCurNalDependId == iLastNalDependId &&
iCurNalQualityId == iLastNalQualityId &&
iCurNalTId == uiLastNalTId &&
iCurNalFrameNum == iLastNalFrameNum &&
iCurNalPoc == iLastNalPoc &&
iCurNalFirstMb != iLastNalFirstMb) {
bMultiSliceFind = true;
iFinalIdxNoInterLayerPred = iCurIdx;
--iCurIdx;
continue;
} else {
break;
}
}
--iCurIdx;
}
if (bMultiSliceFind && *pIdxNoInterLayerPred != iFinalIdxNoInterLayerPred) {
*pIdxNoInterLayerPred = iFinalIdxNoInterLayerPred;
}
}
bool_t CheckPocOfCurValidNalUnits (PAccessUnit pCurAu, int32_t pIdxNoInterLayerPred) {
int32_t iEndIdx = pCurAu->uiEndPos;
int32_t iCurAuPoc =
pCurAu->pNalUnitsList[pIdxNoInterLayerPred]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iPicOrderCntLsb;
int32_t iTmpPoc, i;
for (i = pIdxNoInterLayerPred + 1; i < iEndIdx; i++) {
iTmpPoc = pCurAu->pNalUnitsList[i]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iPicOrderCntLsb;
if (iTmpPoc != iCurAuPoc) {
return false;
}
}
return true;
}
bool_t CheckIntegrityNalUnitsList (PWelsDecoderContext pCtx) {
PAccessUnit pCurAu = pCtx->pAccessUnitList;
const int32_t kiEndPos = pCurAu->uiEndPos;
int32_t iIdxNoInterLayerPred = 0;
int32_t iCurNalUnitIdx = kiEndPos;
ESliceType eSliceType = static_cast<ESliceType> (0);//EC 2009.11.12
if (!pCurAu->bCompletedAuFlag)
return false;
eSliceType = pCurAu->pNalUnitsList[iCurNalUnitIdx]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.eSliceType;
if (I_SLICE == eSliceType) {
pCurAu->uiStartPos = 0;
//step1: search the pNalUnit whose iNoInterLayerPredFlag equal to 1 backwards (from uiEndPos to 0)
iIdxNoInterLayerPred = kiEndPos;
while (iIdxNoInterLayerPred >= 0) {
if (pCurAu->pNalUnitsList[iIdxNoInterLayerPred]->sNalHeaderExt.iNoInterLayerPredFlag) {
break;
}
--iIdxNoInterLayerPred;
}
if (iIdxNoInterLayerPred < 0) {
//can not find the Nal Unit whose no_inter_pred_falg equal to 1, MUST STOP decode
return false;
}
//step2: support multi-slice, to include all base layer slice
RefineIdxNoInterLayerPred (pCurAu, &iIdxNoInterLayerPred);
pCurAu->uiStartPos = iIdxNoInterLayerPred;
CheckAvailNalUnitsListContinuity (pCtx, iIdxNoInterLayerPred, kiEndPos);
if (!CheckPocOfCurValidNalUnits (pCurAu, iIdxNoInterLayerPred)) {
return false;
}
pCtx->iCurSeqIntervalTargetDependId = pCurAu->pNalUnitsList[pCurAu->uiEndPos]->sNalHeaderExt.uiDependencyId;
pCtx->iCurSeqIntervalMaxPicWidth =
pCurAu->pNalUnitsList[pCurAu->uiEndPos]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iMbWidth << 4;
pCtx->iCurSeqIntervalMaxPicHeight =
pCurAu->pNalUnitsList[pCurAu->uiEndPos]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.iMbHeight << 4;
} else { //P_SLICE
//step 1: search uiDependencyId equal to pCtx->cur_seq_interval_target_dependency_id
bool_t bGetDependId = false;
int32_t iIdxDependId = 0;
iIdxDependId = kiEndPos;
while (iIdxDependId >= 0) {
if (pCtx->iCurSeqIntervalTargetDependId == pCurAu->pNalUnitsList[iIdxDependId]->sNalHeaderExt.uiDependencyId) {
bGetDependId = true;
break;
} else {
--iIdxDependId;
}
}
//step 2: switch according to whether or not find the index of pNalUnit whose uiDependencyId equal to iCurSeqIntervalTargetDependId
if (bGetDependId) { //get the index of pNalUnit whose uiDependencyId equal to iCurSeqIntervalTargetDependId
bool_t bGetNoInterPredFront = false;
//step 2a: search iNoInterLayerPredFlag [0....iIdxDependId]
iIdxNoInterLayerPred = iIdxDependId;
while (iIdxNoInterLayerPred >= 0) {
if (pCurAu->pNalUnitsList[iIdxNoInterLayerPred]->sNalHeaderExt.iNoInterLayerPredFlag) {
bGetNoInterPredFront = true;
break;
}
--iIdxNoInterLayerPred;
}
//step 2b: switch, whether or not find the NAL unit whose no_inter_pred_flag equal to 1 among [0....iIdxDependId]
if (bGetNoInterPredFront) { //YES
RefineIdxNoInterLayerPred (pCurAu, &iIdxNoInterLayerPred);
pCurAu->uiStartPos = iIdxNoInterLayerPred;
CheckAvailNalUnitsListContinuity (pCtx, iIdxNoInterLayerPred, iIdxDependId);
if (!CheckPocOfCurValidNalUnits (pCurAu, iIdxNoInterLayerPred)) {
return false;
}
} else { //NO, should find the NAL unit whose no_inter_pred_flag equal to 1 among [iIdxDependId....uiEndPos]
iIdxNoInterLayerPred = iIdxDependId;
while (iIdxNoInterLayerPred <= kiEndPos) {
if (pCurAu->pNalUnitsList[iIdxNoInterLayerPred]->sNalHeaderExt.iNoInterLayerPredFlag) {
break;
}
++iIdxNoInterLayerPred;
}
if (iIdxNoInterLayerPred > kiEndPos) {
return false; //cann't find the index of pNalUnit whose no_inter_pred_flag = 1
}
RefineIdxNoInterLayerPred (pCurAu, &iIdxNoInterLayerPred);
pCurAu->uiStartPos = iIdxNoInterLayerPred;
CheckAvailNalUnitsListContinuity (pCtx, iIdxNoInterLayerPred, kiEndPos);
if (!CheckPocOfCurValidNalUnits (pCurAu, iIdxNoInterLayerPred)) {
return false;
}
}
} else { //without the index of pNalUnit, should process this AU as common case
iIdxNoInterLayerPred = kiEndPos;
while (iIdxNoInterLayerPred >= 0) {
if (pCurAu->pNalUnitsList[iIdxNoInterLayerPred]->sNalHeaderExt.iNoInterLayerPredFlag) {
break;
}
--iIdxNoInterLayerPred;
}
if (iIdxNoInterLayerPred < 0) {
return false; //cann't find the index of pNalUnit whose iNoInterLayerPredFlag = 1
}
RefineIdxNoInterLayerPred (pCurAu, &iIdxNoInterLayerPred);
pCurAu->uiStartPos = iIdxNoInterLayerPred;
CheckAvailNalUnitsListContinuity (pCtx, iIdxNoInterLayerPred, kiEndPos);
if (!CheckPocOfCurValidNalUnits (pCurAu, iIdxNoInterLayerPred)) {
return false;
}
}
}
return true;
}
void_t CheckOnlyOneLayerInAu (PWelsDecoderContext pCtx) {
PAccessUnit pCurAu = pCtx->pAccessUnitList;
int32_t iEndIdx = pCurAu->uiEndPos;
int32_t iCurIdx = pCurAu->uiStartPos;
uint8_t uiDId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiDependencyId;
uint8_t uiQId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiQualityId;
uint8_t uiTId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiTemporalId;
uint8_t uiCurDId, uiCurQId, uiCurTId;
pCtx->bOnlyOneLayerInCurAuFlag = true;
if (iEndIdx == iCurIdx) { //only one NAL in pNalUnitsList
return;
}
++iCurIdx;
while (iCurIdx <= iEndIdx) {
uiCurDId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiDependencyId;
uiCurQId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiQualityId;
uiCurTId = pCurAu->pNalUnitsList[iCurIdx]->sNalHeaderExt.uiTemporalId;
if (uiDId != uiCurDId || uiQId != uiCurQId || uiTId != uiCurTId) {
pCtx->bOnlyOneLayerInCurAuFlag = false;
return;
}
++iCurIdx;
}
}
int32_t WelsDecodeAccessUnitStart (PWelsDecoderContext pCtx) {
// Roll back NAL units not being belong to current access unit list for proceeded access unit
int32_t iRet = UpdateAccessUnit (pCtx);
if (iRet != ERR_NONE)
return iRet;
pCtx->pAccessUnitList->uiStartPos = 0;
if (!pCtx->bAvcBasedFlag && !CheckIntegrityNalUnitsList (pCtx)) {
pCtx->iErrorCode |= dsBitstreamError;
return dsBitstreamError;
}
//check current AU has only one layer or not
//If YES, can use deblocking based on AVC
if (!pCtx->bAvcBasedFlag) {
CheckOnlyOneLayerInAu (pCtx);
}
return ERR_NONE;
}
void_t WelsDecodeAccessUnitEnd (PWelsDecoderContext pCtx) {
// uninitialize context of current access unit and rbsp buffer clean
ResetCurrentAccessUnit (pCtx);
}
int32_t CheckBSBound (int32_t iWidth, int32_t iHeight, int32_t sliceNum, int32_t ppsId) {
int32_t iRet = 0;
#if defined(_WIN32)
iRet = ((iWidth == 80) && (iHeight = 45) && (sliceNum < 60));
#elif defined(MACOS)
iRet = ((iWidth == 80) && (iHeight = 45) && (ppsId < 57));
#elif defined(ANDROID)
iRet = ((iWidth == 40) && (iHeight = 22));
#endif
return iRet;
}
/*
* ConstructAccessUnit
* construct an access unit for given input bitstream, maybe partial NAL Unit, one or more Units are involved to
* joint a collective access unit.
* parameter\
* buf: bitstream data buffer
* bit_len: size in bit length of data
* buf_len: size in byte length of data
* coded_au: mark an Access Unit decoding finished
* return:
* 0 - success; otherwise returned error_no defined in error_no.h
*/
int32_t ConstructAccessUnit (PWelsDecoderContext pCtx, uint8_t** ppDst, SBufferInfo* pDstInfo) {
int32_t iErr;
int32_t iWidth;
int32_t iHeight;
int32_t iStride[2] = { 0 };
PAccessUnit pCurAu = pCtx->pAccessUnitList;
pCtx->bAuReadyFlag = false;
pCtx->bLastHasMmco5 = false;
iErr = WelsDecodeAccessUnitStart (pCtx);
GetVclNalTemporalId (pCtx);
if (ERR_NONE != iErr) {
ForceResetCurrentAccessUnit (pCtx->pAccessUnitList);
pDstInfo->iBufferStatus = 0;
return iErr;
}
pCtx->pSps = pCurAu->pNalUnitsList[pCurAu->uiStartPos]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.pSps;
pCtx->pPps = pCurAu->pNalUnitsList[pCurAu->uiStartPos]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader.pPps;
//try to allocate or relocate DPB memory only when IDR arrival.
if (NAL_UNIT_CODED_SLICE_IDR == pCurAu->pNalUnitsList[pCurAu->uiStartPos]->sNalHeaderExt.sNalUnitHeader.eNalUnitType ||
pCurAu->pNalUnitsList[pCurAu->uiStartPos]->sNalHeaderExt.bIdrFlag) {
WelsResetRefPic (pCtx); //clear ref pPic when IDR NAL
iErr = SyncPictureResolutionExt (pCtx, (pCtx->iMaxWidthInSps + 15) >> 4, (pCtx->iMaxHeightInSps + 15) >> 4);
if (ERR_NONE != iErr) {
WelsLog (pCtx, WELS_LOG_WARNING, "sync picture resolution ext failed, the error is %d", iErr);
return iErr;
}
}
pDstInfo->eBufferProperty = (EBufferProperty)pCtx->iDecoderOutputProperty;
iErr = DecodeCurrentAccessUnit (pCtx, ppDst, iStride, &iWidth, &iHeight, pDstInfo);
WelsDecodeAccessUnitEnd (pCtx);
if (ERR_NONE != iErr) {
WelsLog (pCtx, WELS_LOG_INFO, "returned error from decoding:[0x%x]\n", iErr);
pDstInfo->iBufferStatus = 0;
return iErr;
}
return 0;
}
static inline void_t InitDqLayerInfo (PDqLayer pDqLayer, PLayerInfo pLayerInfo, PNalUnit pNalUnit, PPicture pPicDec) {
PNalUnitHeaderExt pNalHdrExt = &pNalUnit->sNalHeaderExt;
PSliceHeaderExt pShExt = &pNalUnit->sNalData.sVclNal.sSliceHeaderExt;
PSliceHeader pSh = &pShExt->sSliceHeader;
const uint8_t kuiQualityId = pNalHdrExt->uiQualityId;
memcpy (&pDqLayer->sLayerInfo, pLayerInfo, sizeof (SLayerInfo)); //confirmed_safe_unsafe_usage
pDqLayer->pDec = pPicDec;
pDqLayer->iMbWidth = pSh->iMbWidth; // MB width of this picture
pDqLayer->iMbHeight = pSh->iMbHeight;// MB height of this picture
pDqLayer->iSliceIdcBackup = (pSh->iFirstMbInSlice << 7) | (pNalHdrExt->uiDependencyId << 4) | (pNalHdrExt->uiQualityId);
/* Common syntax elements across all slices of a DQLayer */
pDqLayer->uiPpsId = pLayerInfo->pPps->iPpsId;
pDqLayer->uiDisableInterLayerDeblockingFilterIdc = pShExt->uiDisableInterLayerDeblockingFilterIdc;
pDqLayer->iInterLayerSliceAlphaC0Offset = pShExt->iInterLayerSliceAlphaC0Offset;
pDqLayer->iInterLayerSliceBetaOffset = pShExt->iInterLayerSliceBetaOffset;
pDqLayer->iSliceGroupChangeCycle = pSh->iSliceGroupChangeCycle;
pDqLayer->bStoreRefBasePicFlag = pShExt->bStoreRefBasePicFlag;
pDqLayer->bTCoeffLevelPredFlag = pShExt->bTCoeffLevelPredFlag;
pDqLayer->bConstrainedIntraResamplingFlag = pShExt->bConstrainedIntraResamplingFlag;
pDqLayer->uiRefLayerDqId = pShExt->uiRefLayerDqId;
pDqLayer->uiRefLayerChromaPhaseXPlus1Flag = pShExt->uiRefLayerChromaPhaseXPlus1Flag;
pDqLayer->uiRefLayerChromaPhaseYPlus1 = pShExt->uiRefLayerChromaPhaseYPlus1;
//memcpy(&pDqLayer->sScaledRefLayer, &pShExt->sScaledRefLayer, sizeof(SPosOffset));//confirmed_safe_unsafe_usage
if (kuiQualityId == BASE_QUALITY_ID) {
pDqLayer->pRefPicListReordering = &pSh->pRefPicListReordering;
pDqLayer->pRefPicMarking = &pSh->sRefMarking;
pDqLayer->pRefPicBaseMarking = &pShExt->sRefBasePicMarking;
}
pDqLayer->uiLayerDqId = pNalHdrExt->uiLayerDqId; // dq_id of current layer
pDqLayer->bUseRefBasePicFlag = pNalHdrExt->bUseRefBasePicFlag;
}
void_t WelsDqLayerDecodeStart (PWelsDecoderContext pCtx, PNalUnit pCurNal, PSps pSps, PPps pPps) {
SNalUnitHeader* pNalHdr = &pCurNal->sNalHeaderExt.sNalUnitHeader;
PSliceHeader pSh = &pCurNal->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader;
pCtx->eSliceType = pSh->eSliceType;
pCtx->pSliceHeader = pSh;
pCtx->iFrameNum = pSh->iFrameNum;
if ((pNalHdr->eNalUnitType == NAL_UNIT_CODED_SLICE_IDR ||
(pCurNal->sNalHeaderExt.uiQualityId == BASE_QUALITY_ID && pCurNal->sNalHeaderExt.bIdrFlag)) &&
pSh->iFrameNum == 0) { //pSh->iFrameNum == 0 this condition can deleted??????
WelsResetRefPic (pCtx); // Reset decoded picture buffer lists due to an IDR frame incomes
}
}
int32_t InitRefPicList (PWelsDecoderContext pCtx, const uint8_t kuiNRi, const bool_t kbFirstSlice, int32_t iPoc) {
int32_t iRet = ERR_NONE;
if (kbFirstSlice)
iRet = WelsInitRefList (pCtx, iPoc);
if ((pCtx->eSliceType != I_SLICE && pCtx->eSliceType != SI_SLICE) && kbFirstSlice) {
iRet = WelsReorderRefList (pCtx);
}
return iRet;
}
void_t InitCurDqLayerData (PWelsDecoderContext pCtx, PDqLayer pCurDq) {
if (NULL != pCtx && NULL != pCurDq) {
pCurDq->pCsData[0] = pCtx->pCsListXchg[0][0];
pCurDq->pCsData[1] = pCtx->pCsListXchg[0][1];
pCurDq->pCsData[2] = pCtx->pCsListXchg[0][2];
pCurDq->iCsStride[0] = pCtx->iCsStride[0];
pCurDq->iCsStride[1] = pCtx->iCsStride[1];
pCurDq->iCsStride[2] = pCtx->iCsStride[2];
pCurDq->pMbType = pCtx->sMb.pMbType[0];
pCurDq->pSliceIdc = pCtx->sMb.pSliceIdc[0];
pCurDq->pMv[0] = pCtx->sMb.pMv[0][0];
pCurDq->pRefIndex[0] = pCtx->sMb.pRefIndex[0][0];
pCurDq->pLumaQp = pCtx->sMb.pLumaQp[0];
pCurDq->pChromaQp = pCtx->sMb.pChromaQp[0];
pCurDq->pNzc = pCtx->sMb.pNzc[0];
pCurDq->pNzcRs = pCtx->sMb.pNzcRs[0];
pCurDq->pScaledTCoeff = pCtx->sMb.pScaledTCoeff[0];
pCurDq->pIntraPredMode = pCtx->sMb.pIntraPredMode[0];
pCurDq->pIntra4x4FinalMode = pCtx->sMb.pIntra4x4FinalMode[0];
pCurDq->pChromaPredMode = pCtx->sMb.pChromaPredMode[0];
pCurDq->pCbp = pCtx->sMb.pCbp[0];
pCurDq->pSubMbType = pCtx->sMb.pSubMbType[0];
pCurDq->pInterPredictionDoneFlag = pCtx->sMb.pInterPredictionDoneFlag[0];
pCurDq->pResidualPredFlag = pCtx->sMb.pResidualPredFlag[0];
}
}
// added to reset state of parameter sets to waiting successive incoming IDR, 6/4/2010
// It will be called in case packets lost/ broken and decoded failed at temporal level 0
void_t ResetParameterSetsState (PWelsDecoderContext pCtx) {
pCtx->bSpsExistAheadFlag = false;
pCtx->bSubspsExistAheadFlag = false;
pCtx->bPpsExistAheadFlag = false;
}
/*
* DecodeCurrentAccessUnit
* Decode current access unit when current AU is completed.
*/
int32_t DecodeCurrentAccessUnit (PWelsDecoderContext pCtx, uint8_t** ppDst, int32_t* pDstLen, int32_t* pWidth,
int32_t* pHeight, SBufferInfo* pDstInfo) {
int32_t iRefCount[LIST_A];
PNalUnit pNalCur = NULL;
PAccessUnit pCurAu = pCtx->pAccessUnitList;
int32_t iIdx = pCurAu->uiStartPos;
int32_t iEndIdx = pCurAu->uiEndPos;
int32_t iPpsId = 0;
int32_t iRet = ERR_NONE;
const uint8_t kuiTargetLayerDqId = GetTargetDqId (pCtx->uiTargetDqId, pCtx->pParam);
const uint8_t kuiDependencyIdMax = (kuiTargetLayerDqId & 0x7F) >> 4;
int16_t iLastIdD = -1, iLastIdQ = -1;
int16_t iCurrIdD = 0, iCurrIdQ = 0;
uint8_t uiNalRefIdc = 0;
bool_t bFreshSliceAvailable =
true; // Another fresh slice comingup for given dq layer, for multiple slices in case of header parts of slices sometimes loss over error-prone channels, 8/14/2008
PPicture pStoreBasePic = NULL;
//update pCurDqLayer at the starting of AU decoding
if (pCtx->bInitialDqLayersMem) {
pCtx->pCurDqLayer = pCtx->pDqLayersList[0];
}
InitCurDqLayerData (pCtx, pCtx->pCurDqLayer);
pNalCur = pCurAu->pNalUnitsList[iIdx];
while (iIdx <= iEndIdx) {
PDqLayer dq_cur = pCtx->pCurDqLayer;
SLayerInfo pLayerInfo;
PSliceHeaderExt pShExt = NULL;
PSliceHeader pSh = NULL;
if (pCtx->pDec == NULL) {
pCtx->pDec = PrefetchPic (pCtx->pPicBuff[0]);
if (NULL == pCtx->pDec) {
WelsLog (pCtx, WELS_LOG_ERROR, "DecodeCurrentAccessUnit()::::::PrefetchPic ERROR, pSps->iNumRefFrames:%d.\n",
pCtx->pSps->iNumRefFrames);
pCtx->iErrorCode |= dsOutOfMemory;
return ERR_INFO_REF_COUNT_OVERFLOW;
}
}
#ifdef NO_WAITING_AU
//For fixing the nal lossing issue
if ((pCtx->pDec->iTotalNumMbRec != 0) &&
(CheckAccessUnitBoundaryExt (&pCtx->sLastNalHdrExt, &pNalCur->sNalHeaderExt, &pCtx->sLastSliceHeader,
&pNalCur->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader))) {
pCtx->pDec->iTotalNumMbRec = 0;
}
#else
//initialize at the starting of AU.
pCtx->pDec->iTotalNumMbRec = 0;
#endif
if (pCtx->pDec->iTotalNumMbRec == 0) { //Picture start to decode
for (int32_t i = 0; i < LAYER_NUM_EXCHANGEABLE; ++ i)
memset (pCtx->sMb.pSliceIdc[i], 0xff, (pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight * sizeof (int32_t)));
}
GetI4LumaIChromaAddrTable (pCtx->iDecBlockOffsetArray, pCtx->pDec->iLinesize[0], pCtx->pDec->iLinesize[1]);
if (pNalCur->sNalHeaderExt.uiLayerDqId > kuiTargetLayerDqId) {
break; // Per formance it need not to decode the remaining bits any more due to given uiLayerDqId required, 9/2/2009
}
memset (&pLayerInfo, 0, sizeof (SLayerInfo));
/*
* Loop decoding for slices (even FMO and/ multiple slices) within a dq layer
*/
while (iIdx <= iEndIdx) {
BOOL_T bReconstructSlice;
iCurrIdQ = pNalCur->sNalHeaderExt.uiQualityId;
iCurrIdD = pNalCur->sNalHeaderExt.uiDependencyId;
pSh = &pNalCur->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader;
pShExt = &pNalCur->sNalData.sVclNal.sSliceHeaderExt;
bReconstructSlice = CheckSliceNeedReconstruct (iCurrIdD, iCurrIdQ, pShExt->bStoreRefBasePicFlag,
kuiDependencyIdMax, pNalCur->sNalHeaderExt.uiLayerDqId, kuiTargetLayerDqId);
memcpy (&pLayerInfo.sNalHeaderExt, &pNalCur->sNalHeaderExt, sizeof (SNalUnitHeaderExt)); //confirmed_safe_unsafe_usage
pCtx->pDec->iFrameNum = pSh->iFrameNum;
memcpy (&pLayerInfo.sSliceInLayer.sSliceHeaderExt, pShExt, sizeof (SSliceHeaderExt)); //confirmed_safe_unsafe_usage
pLayerInfo.sSliceInLayer.bSliceHeaderExtFlag = pNalCur->sNalData.sVclNal.bSliceHeaderExtFlag;
pLayerInfo.sSliceInLayer.eSliceType = pSh->eSliceType;
pLayerInfo.sSliceInLayer.iLastMbQp = pSh->iSliceQp;
dq_cur->pBitStringAux = &pNalCur->sNalData.sVclNal.sSliceBitsRead;
uiNalRefIdc = pNalCur->sNalHeaderExt.sNalUnitHeader.uiNalRefIdc;
iPpsId = pSh->iPpsId;
pLayerInfo.pPps = pSh->pPps;
pLayerInfo.pSps = pSh->pSps;
pLayerInfo.pSubsetSps = pShExt->pSubsetSps;
pCtx->pFmo = &pCtx->sFmoList[iPpsId];
if (!FmoParamUpdate (pCtx->pFmo, pLayerInfo.pSps, pLayerInfo.pPps, &pCtx->iActiveFmoNum)) {
pCtx->iErrorCode |= dsBitstreamError;
WelsLog (pCtx, WELS_LOG_WARNING, "DecodeCurrentAccessUnit(), FmoParamUpdate failed, eSliceType: %d.\n",
pSh->eSliceType);
return GENERATE_ERROR_NO (ERR_LEVEL_SLICE_HEADER, ERR_INFO_FMO_INIT_FAIL);
}
bFreshSliceAvailable = (iCurrIdD != iLastIdD
|| iCurrIdQ != iLastIdQ); // do not need condition of (first_mb == 0) due multiple slices might be disorder
WelsDqLayerDecodeStart (pCtx, pNalCur, pLayerInfo.pSps, pLayerInfo.pPps);
if (iCurrIdQ == BASE_QUALITY_ID) {
ST64 (iRefCount, LD64 (pLayerInfo.sSliceInLayer.sSliceHeaderExt.sSliceHeader.uiRefCount));
}
if ((iLastIdD < 0) || //case 1: first layer
(iLastIdD == iCurrIdD)) { //case 2: same uiDId
InitDqLayerInfo (dq_cur, &pLayerInfo, pNalCur, pCtx->pDec);
if (!dq_cur->sLayerInfo.pSps->bGapsInFrameNumValueAllowedFlag) {
const bool_t kbIdrFlag = dq_cur->sLayerInfo.sNalHeaderExt.bIdrFlag
|| (dq_cur->sLayerInfo.sNalHeaderExt.sNalUnitHeader.eNalUnitType == NAL_UNIT_CODED_SLICE_IDR);
// Subclause 8.2.5.2 Decoding process for gaps in frame_num
if (!kbIdrFlag &&
pSh->iFrameNum != pCtx->iPrevFrameNum &&
pSh->iFrameNum != ((pCtx->iPrevFrameNum + 1) & ((1 << dq_cur->sLayerInfo.pSps->uiLog2MaxFrameNum) - 1))) {
WelsLog (pCtx, WELS_LOG_WARNING,
"referencing pictures lost due frame gaps exist, prev_frame_num: %d, curr_frame_num: %d\n", pCtx->iPrevFrameNum,
pSh->iFrameNum);
#ifdef LONG_TERM_REF
pCtx->bParamSetsLostFlag = true;
#else
pCtx->bReferenceLostAtT0Flag = true;
#endif
ResetParameterSetsState (pCtx);
pCtx->iErrorCode |= dsRefLost;
return ERR_INFO_REFERENCE_PIC_LOST;
}
}
if (iCurrIdD == kuiDependencyIdMax && iCurrIdQ == BASE_QUALITY_ID) {
iRet = InitRefPicList (pCtx, uiNalRefIdc, bFreshSliceAvailable, pSh->iPicOrderCntLsb);
if (iRet) {
HandleReferenceLost (pCtx, pNalCur);
WelsLog (pCtx, WELS_LOG_WARNING, "reference picture introduced by this frame is lost during transmission! uiTId: %d\n",
pNalCur->sNalHeaderExt.uiTemporalId);
return iRet;
}
}
iRet = WelsDecodeSlice (pCtx, bFreshSliceAvailable, pNalCur);
//Output good store_base reconstruction when enhancement quality layer occurred error for MGS key picture case
if (iRet != ERR_NONE) {
WelsLog (pCtx, WELS_LOG_WARNING, "DecodeCurrentAccessUnit() failed (%d) in frame: %d uiDId: %d uiQId: %d\n",
iRet, pSh->iFrameNum, iCurrIdD, iCurrIdQ);
HandleReferenceLostL0 (pCtx, pNalCur);
return iRet;
}
if (bReconstructSlice) {
if (WelsDecodeConstructSlice (pCtx, pNalCur)) {
return -1;
}
}
}
#if defined (_DEBUG) && !defined (CODEC_FOR_TESTBED)
fprintf (stderr, "cur_frame : %d iCurrIdD : %d\n ",
dq_cur->sLayerInfo.sSliceInLayer.sSliceHeaderExt.sSliceHeader.iFrameNum, iCurrIdD);
#endif//#if !CODEC_FOR_TESTBED
iLastIdD = iCurrIdD;
iLastIdQ = iCurrIdQ;
//pNalUnitsList overflow.
++ iIdx;
if (iIdx <= iEndIdx) {
pNalCur = pCurAu->pNalUnitsList[iIdx];
} else {
pNalCur = NULL;
}
if (pNalCur == NULL ||
iLastIdD != pNalCur->sNalHeaderExt.uiDependencyId ||
iLastIdQ != pNalCur->sNalHeaderExt.uiQualityId)
break;
}
// A dq layer decoded here
#if defined (_DEBUG) && !defined (CODEC_FOR_TESTBED)
#undef fprintf
fprintf (stderr, "POC: #%d, FRAME: #%d, D: %d, Q: %d, T: %d, P: %d, %d\n",
pSh->iPicOrderCntLsb, pSh->iFrameNum, iCurrIdD, iCurrIdQ, dq_cur->sLayerInfo.sNalHeaderExt.uiTemporalId,
dq_cur->sLayerInfo.sNalHeaderExt.uiPriorityId, dq_cur->sLayerInfo.sSliceInLayer.sSliceHeaderExt.sSliceHeader.iSliceQp);
#endif//#if !CODEC_FOR_TESTBED
if (dq_cur->uiLayerDqId == kuiTargetLayerDqId) {
if (DecodeFrameConstruction (pCtx, ppDst, pDstLen, pWidth, pHeight, pDstInfo)) {
#ifdef NO_WAITING_AU
memcpy (&pCtx->sLastNalHdrExt, &pCurAu->pNalUnitsList[iIdx - 1]->sNalHeaderExt, sizeof (SNalUnitHeaderExt));
memcpy (&pCtx->sLastSliceHeader, &pCurAu->pNalUnitsList[iIdx - 1]->sNalData.sVclNal.sSliceHeaderExt.sSliceHeader,
sizeof (SSliceHeader));
return ERR_NONE;
#else
pCtx->iErrorCode |= dsBitstreamError;
return -1;
#endif
}
if ((uiNalRefIdc > 0) && (iCurrIdQ || (!dq_cur->bStoreRefBasePicFlag))) {
WelsMarkAsRef (pCtx, false);
ExpandReferencingPicture (pCtx->pDec, pCtx->sExpandPicFunc.pExpandLumaPicture,
pCtx->sExpandPicFunc.pExpandChromaPicture);
pCtx->pDec = NULL;
}
}
if ((iCurrIdD == kuiDependencyIdMax) && (iCurrIdQ == BASE_QUALITY_ID) && (dq_cur->bStoreRefBasePicFlag)) {
pStoreBasePic = pCtx->pDec;
if (uiNalRefIdc > 0) {
WelsMarkAsRef (pCtx, true);
ExpandReferencingPicture (pCtx->pDec, pCtx->sExpandPicFunc.pExpandLumaPicture,
pCtx->sExpandPicFunc.pExpandChromaPicture);
pCtx->pDec = NULL;
}
}
// need update frame_num due current frame is well decoded
pCtx->iPrevFrameNum = pSh->iFrameNum;
if (pCtx->bLastHasMmco5)
pCtx->iPrevFrameNum = 0;
}
return ERR_NONE;
}
} // namespace WelsDec