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winamp/Src/mpeg4dec/mp4decvopb.c
Jef 20d28e80a5 Initial community commit
2024-09-24 14:54:57 +02:00

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/* ///////////////////////////////////////////////////////////////////////
//
// INTEL CORPORATION PROPRIETARY INFORMATION
// This software is supplied under the terms of a license agreement or
// nondisclosure agreement with Intel Corporation and may not be copied
// or disclosed except in accordance with the terms of that agreement.
// Copyright (c) 2001-2007 Intel Corporation. All Rights Reserved.
//
// Description: Decodes B-VOPs
//
*/
#include "mp4def.h"
#include "mp4dec.h"
/*
// Purpose: decode MPEG-4 BVOP
*/
mp4_Status mp4_DecodeVOP_B(mp4_Info* pInfo)
{
__ALIGN16(int16_t, coeffMB, 64*6);
__ALIGN16(uint8_t, tmpMB, 64*4);
uint32_t code;
uint8_t *pYc, *pCbc, *pCrc, *pYp, *pCbp, *pCrp, *pYn, *pCbn, *pCrn, *pc, *pr, *pn;
int32_t stepYp, stepYc, stepYn, stepCbp, stepCbc, stepCbn, stepCrp, stepCrc, stepCrn, mbPerRow, mbPerCol;
int32_t dx, dy, TRB, TRD, quant, mbCurr, mbInVideoPacket, colNum, rowNum;
IppiRect limitRectL, limitRectC;
int32_t quarter_sample, modb, mb_type, cbpb, dct_type, field_prediction, rvlc = 0, scan;
int32_t mb_ftfr, mb_fbfr, mb_btfr, mb_bbfr, fcode_forward, fcode_backward;
mp4_MacroBlock *pMBinfo;
mp4_Status sts;
sts = MP4_STATUS_OK;
if (!pInfo->VisualObject.cFrame)
pInfo->VisualObject.cFrame = CreateFrame(&pInfo->VisualObject);
stepYc = pInfo->VisualObject.cFrame->stepY;
stepYp = pInfo->VisualObject.rFrame->stepY;
stepYn = pInfo->VisualObject.nFrame->stepY;
stepCbc = pInfo->VisualObject.cFrame->stepCb;
stepCbp = pInfo->VisualObject.rFrame->stepCb;
stepCbn = pInfo->VisualObject.nFrame->stepCb;
stepCrc = pInfo->VisualObject.cFrame->stepCr;
stepCrp = pInfo->VisualObject.rFrame->stepCr;
stepCrn = pInfo->VisualObject.nFrame->stepCr;
pYc = pInfo->VisualObject.cFrame->pY;
pCbc = pInfo->VisualObject.cFrame->pCb;
pCrc = pInfo->VisualObject.cFrame->pCr;
pYp = pInfo->VisualObject.rFrame->pY;
pCbp = pInfo->VisualObject.rFrame->pCb;
pCrp = pInfo->VisualObject.rFrame->pCr;
pYn = pInfo->VisualObject.nFrame->pY;
pCbn = pInfo->VisualObject.nFrame->pCb;
pCrn = pInfo->VisualObject.nFrame->pCr;
quarter_sample = pInfo->VisualObject.VideoObject.quarter_sample;
scan = pInfo->VisualObject.VideoObject.VideoObjectPlane.alternate_vertical_scan_flag ? IPPVC_SCAN_VERTICAL : IPPVC_SCAN_ZIGZAG;
fcode_forward = pInfo->VisualObject.VideoObject.VideoObjectPlane.fcode_forward;
fcode_backward = pInfo->VisualObject.VideoObject.VideoObjectPlane.fcode_backward;
// Bounding rectangles for MV limitation
limitRectL.x = - 16 * MP4_NUM_EXT_MB;
limitRectL.y = - 16 * MP4_NUM_EXT_MB;
limitRectL.width = pInfo->VisualObject.VideoObject.width + 16 * 2 * MP4_NUM_EXT_MB;
limitRectL.height = pInfo->VisualObject.VideoObject.height + 16 * 2 * MP4_NUM_EXT_MB;
limitRectC.x = -8 * MP4_NUM_EXT_MB;
limitRectC.y = -8 * MP4_NUM_EXT_MB;
limitRectC.width = (pInfo->VisualObject.VideoObject.width >> 1) + 8 * 2 * MP4_NUM_EXT_MB;
limitRectC.height = (pInfo->VisualObject.VideoObject.height >> 1) + 8 * 2 * MP4_NUM_EXT_MB;
quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant;
mbPerRow = pInfo->VisualObject.VideoObject.MacroBlockPerRow;
mbPerCol = pInfo->VisualObject.VideoObject.MacroBlockPerCol;
mbCurr = colNum = rowNum = 0;
TRD = pInfo->VisualObject.VideoObject.TRD;
TRB = pInfo->VisualObject.VideoObject.TRB;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo;
// decode interlaced B-VOP
if (pInfo->VisualObject.VideoObject.interlaced) {
IppMotionVector mvCbCrF, mvCbCrB, mvForwT, mvBackT, mvForwB, mvBackB, mvForw[4], mvBack[4], mvCbCrFFT, mvCbCrFFB, mvCbCrBFT, mvCbCrBFB, *mvField = pInfo->VisualObject.VideoObject.FieldMV;
// warning "variable may be used without having been initialized"
mvCbCrF.dx = mvCbCrF.dy = mvCbCrB.dx = mvCbCrB.dy = mvCbCrFFT.dx = mvCbCrFFT.dy = mvCbCrFFB.dx = mvCbCrFFB.dy = mvCbCrBFT.dx = mvCbCrBFT.dy = mvCbCrBFB.dx = mvCbCrBFB.dy = 0;
mb_ftfr = mb_fbfr = mb_btfr = mb_bbfr = 0;
for (;;) {
mbInVideoPacket = 0;
// reset MV predictors at new VideoPacket
mvForwT.dx = mvForwT.dy = mvBackT.dx = mvBackT.dy = mvForwB.dx = mvForwB.dy = mvBackB.dx = mvBackB.dy = 0;
// decode B-VOP macroblocks
for (;;) {
if (pMBinfo->not_coded) {
ippiCopy16x16_8u_C1R(pYp, stepYp, pYc, stepYc);
ippiCopy8x8_8u_C1R(pCbp, stepCbp, pCbc, stepCbc);
ippiCopy8x8_8u_C1R(pCrp, stepCrp, pCrc, stepCrc);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
} else {
cbpb = 0;
if (mp4_GetBit(pInfo)) {
modb = 2;
mb_type = IPPVC_MBTYPE_DIRECT;
} else {
modb = mp4_GetBit(pInfo);
// decode mb_type
code = mp4_ShowBits9(pInfo, 4);
if (code != 0) {
mb_type = mp4_BVOPmb_type[code].code;
mp4_FlushBits(pInfo, mp4_BVOPmb_type[code].len);
} else {
mp4_Error("Error when decode mb_type of B-VOP macroblock");
goto Err_1;
}
if (modb == 0)
cbpb = mp4_GetBits9(pInfo, 6);
if (mb_type != IPPVC_MBTYPE_DIRECT && cbpb != 0)
mp4_UpdateQuant_B(pInfo, quant);
}
dct_type = 0;
field_prediction = 0;
if (cbpb != 0)
dct_type = mp4_GetBit(pInfo);
if (mb_type != IPPVC_MBTYPE_DIRECT) {
field_prediction = mp4_GetBit(pInfo);
if (field_prediction) {
if (mb_type != IPPVC_MBTYPE_BACKWARD) {
mb_ftfr = mp4_GetBit(pInfo);
mb_fbfr = mp4_GetBit(pInfo);
}
if (mb_type != IPPVC_MBTYPE_FORWARD) {
mb_btfr = mp4_GetBit(pInfo);
mb_bbfr = mp4_GetBit(pInfo);
}
}
}
// coordinates of current MB for limitation
dx = colNum * 16;
dy = rowNum * 16;
if (mb_type == IPPVC_MBTYPE_FORWARD) {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_FORWARD);
if (!field_prediction) {
if (mp4_DecodeMV(pInfo, &mvForwT, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitMVQ(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvForw[0], &mvCbCrF);
mp4_Copy16x16QP_8u(pYp, stepYp, pYc, stepYc, &mvForw[0], 0);
} else {
mp4_LimitMV(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvForw[0], &mvCbCrF);
mp4_Copy16x16HP_8u(pYp, stepYp, pYc, stepYc, &mvForw[0], 0);
}
//mvForw[1] = mvForw[2] = mvForw[3] = mvForw[0];
mvForwB = mvForwT;
} else {
mvForwT.dy = (int16_t)mp4_Div2(mvForwT.dy);
if (mp4_DecodeMV(pInfo, &mvForwT, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
mvForwB.dy = (int16_t)mp4_Div2(mvForwB.dy);
if (mp4_DecodeMV(pInfo, &mvForwB, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitFMVQ(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mvForw[0].dx = (int16_t)mp4_Div2(mvForw[0].dx);
mvForw[0].dy = (int16_t)(mp4_Div2(mvForw[0].dy*2) >> 1);
mp4_LimitFMVQ(&mvForwB, &mvForw[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
mvForw[2].dx = (int16_t)mp4_Div2(mvForw[2].dx);
mvForw[2].dy = (int16_t)(mp4_Div2(mvForw[2].dy*2) >> 1);
} else {
mp4_LimitFMV(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mp4_LimitFMV(&mvForwB, &mvForw[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
}
mvForwT.dy <<= 1;
mvForwB.dy <<= 1;
//mvForw[1] = mvForw[0];
//mvForw[3] = mvForw[2];
mp4_ComputeChromaMV(&mvForw[0], &mvCbCrFFT);
mp4_ComputeChromaMV(&mvForw[2], &mvCbCrFFB);
}
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, cbpb, scan) != MP4_STATUS_OK)
goto Err_1;
if (!dct_type) {
mp4_AddResidual(cbpb & 32, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpb & 32, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_MC_HP(cbpb & 2, pCbp, stepCbp, pCbc, stepCbc, coeffMB+256, &mvCbCrF, 0);
mp4_MC_HP(cbpb & 1, pCrp, stepCrp, pCrc, stepCrc, coeffMB+320, &mvCbCrF, 0);
} else {
mp4_Copy8x4HP_8u(pCbp+(mb_ftfr ? stepCbp : 0), stepCbp*2, pCbc, stepCbc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_ftfr ? stepCrp : 0), stepCrp*2, pCrc, stepCrc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCbp+(mb_fbfr ? stepCbp : 0), stepCbp*2, pCbc+stepCbc, stepCbc*2, &mvCbCrFFB, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_fbfr ? stepCrp : 0), stepCrp*2, pCrc+stepCrc, stepCrc*2, &mvCbCrFFB, 0);
mp4_AddResidual(cbpb & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpb & 1, pCrc, stepCrc, coeffMB+320);
}
} else if (mb_type == IPPVC_MBTYPE_BACKWARD) {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_BACKWARD);
if (!field_prediction) {
if (mp4_DecodeMV(pInfo, &mvBackT, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitMVQ(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvBack[0], &mvCbCrB);
mp4_Copy16x16QP_8u(pYn, stepYn, pYc, stepYc, &mvBack[0], 0);
} else {
mp4_LimitMV(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvBack[0], &mvCbCrB);
mp4_Copy16x16HP_8u(pYn, stepYn, pYc, stepYc, &mvBack[0], 0);
}
//mvBack[1] = mvBack[2] = mvBack[3] = mvBack[0];
mvBackB = mvBackT;
} else {
mvBackT.dy = (int16_t)mp4_Div2(mvBackT.dy);
if (mp4_DecodeMV(pInfo, &mvBackT, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
mvBackB.dy = (int16_t)mp4_Div2(mvBackB.dy);
if (mp4_DecodeMV(pInfo, &mvBackB, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitFMVQ(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYn+(mb_btfr ? stepYn : 0), stepYn*2, pYc, stepYc*2, &mvBack[0], 0);
mvBack[0].dx = (int16_t)mp4_Div2(mvBack[0].dx);
mvBack[0].dy = (int16_t)(mp4_Div2(mvBack[0].dy*2) >> 1);
mp4_LimitFMVQ(&mvBackB, &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYn+(mb_bbfr ? stepYn : 0), stepYn*2, pYc+stepYc, stepYc*2, &mvBack[2], 0);
mvBack[2].dx = (int16_t)mp4_Div2(mvBack[2].dx);
mvBack[2].dy = (int16_t)(mp4_Div2(mvBack[2].dy*2) >> 1);
} else {
mp4_LimitFMV(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYn+(mb_btfr ? stepYn : 0), stepYn*2, pYc, stepYc*2, &mvBack[0], 0);
mp4_LimitFMV(&mvBackB, &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYn+(mb_bbfr ? stepYn : 0), stepYn*2, pYc+stepYc, stepYc*2, &mvBack[2], 0);
}
mvBackT.dy <<= 1;
mvBackB.dy <<= 1;
//mvBack[1] = mvBack[0];
//mvBack[3] = mvBack[2];
mp4_ComputeChromaMV(&mvBack[0], &mvCbCrBFT);
mp4_ComputeChromaMV(&mvBack[2], &mvCbCrBFB);
}
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, cbpb, scan) != MP4_STATUS_OK)
goto Err_1;
if (!dct_type) {
mp4_AddResidual(cbpb & 32, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpb & 32, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_MC_HP(cbpb & 2, pCbn, stepCbn, pCbc, stepCbc, coeffMB+256, &mvCbCrB, 0);
mp4_MC_HP(cbpb & 1, pCrn, stepCrn, pCrc, stepCrc, coeffMB+320, &mvCbCrB, 0);
} else {
mp4_Copy8x4HP_8u(pCbn+(mb_btfr ? stepCbn : 0), stepCbn*2, pCbc, stepCbc*2, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCrn+(mb_btfr ? stepCrn : 0), stepCrn*2, pCrc, stepCrc*2, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCbn+(mb_bbfr ? stepCbn : 0), stepCbn*2, pCbc+stepCbc, stepCbc*2, &mvCbCrBFB, 0);
mp4_Copy8x4HP_8u(pCrn+(mb_bbfr ? stepCrn : 0), stepCrn*2, pCrc+stepCrc, stepCrc*2, &mvCbCrBFB, 0);
mp4_AddResidual(cbpb & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpb & 1, pCrc, stepCrc, coeffMB+320);
}
} else if (mb_type == IPPVC_MBTYPE_INTERPOLATE) {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_INTERPOLATE);
if (!field_prediction) {
if (mp4_DecodeMV(pInfo, &mvForwT, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
if (mp4_DecodeMV(pInfo, &mvBackT, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitMVQ(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvForw[0], &mvCbCrF);
mp4_Copy16x16QP_8u(pYp, stepYp, pYc, stepYc, &mvForw[0], 0);
mp4_LimitMVQ(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvBack[0], &mvCbCrB);
mp4_Copy16x16QP_8u(pYn, stepYn, tmpMB, 16, &mvBack[0], 0);
} else {
mp4_LimitMV(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvForw[0], &mvCbCrF);
mp4_Copy16x16HP_8u(pYp, stepYp, pYc, stepYc, &mvForw[0], 0);
mp4_LimitMV(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvBack[0], &mvCbCrB);
mp4_Copy16x16HP_8u(pYn, stepYn, tmpMB, 16, &mvBack[0], 0);
}
//mvForw[1] = mvForw[2] = mvForw[3] = mvForw[0];
mvForwB = mvForwT;
//mvBack[1] = mvBack[2] = mvBack[3] = mvBack[0];
mvBackB = mvBackT;
} else {
mvForwT.dy = (int16_t)mp4_Div2(mvForwT.dy);
if (mp4_DecodeMV(pInfo, &mvForwT, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
mvForwB.dy = (int16_t)mp4_Div2(mvForwB.dy);
if (mp4_DecodeMV(pInfo, &mvForwB, fcode_forward) != MP4_STATUS_OK)
goto Err_1;
mvBackT.dy = (int16_t)mp4_Div2(mvBackT.dy);
if (mp4_DecodeMV(pInfo, &mvBackT, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
mvBackB.dy = (int16_t)mp4_Div2(mvBackB.dy);
if (mp4_DecodeMV(pInfo, &mvBackB, fcode_backward) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitFMVQ(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mvForw[0].dx = (int16_t)mp4_Div2(mvForw[0].dx);
mvForw[0].dy = (int16_t)(mp4_Div2(mvForw[0].dy*2) >> 1);
mp4_LimitFMVQ(&mvForwB, &mvForw[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
mvForw[2].dx = (int16_t)mp4_Div2(mvForw[2].dx);
mvForw[2].dy = (int16_t)(mp4_Div2(mvForw[2].dy*2) >> 1);
mp4_LimitFMVQ(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYn+(mb_btfr ? stepYn : 0), stepYn*2, tmpMB, 32, &mvBack[0], 0);
mvBack[0].dx = (int16_t)mp4_Div2(mvBack[0].dx);
mvBack[0].dy = (int16_t)(mp4_Div2(mvBack[0].dy*2) >> 1);
mp4_LimitFMVQ(&mvBackB, &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYn+(mb_bbfr ? stepYn : 0), stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
mvBack[2].dx = (int16_t)mp4_Div2(mvBack[2].dx);
mvBack[2].dy = (int16_t)(mp4_Div2(mvBack[2].dy*2) >> 1);
} else {
mp4_LimitFMV(&mvForwT, &mvForw[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mp4_LimitFMV(&mvForwB, &mvForw[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
mp4_LimitFMV(&mvBackT, &mvBack[0], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYn+(mb_btfr ? stepYn : 0), stepYn*2, tmpMB, 32, &mvBack[0], 0);
mp4_LimitFMV(&mvBackB, &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYn+(mb_bbfr ? stepYn : 0), stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
}
mvForwT.dy <<= 1;
mvForwB.dy <<= 1;
mvBackT.dy <<= 1;
mvBackB.dy <<= 1;
//mvForw[1] = mvForw[0];
//mvForw[3] = mvForw[2];
//mvBack[1] = mvBack[0];
//mvBack[3] = mvBack[2];
mp4_ComputeChromaMV(&mvForw[0], &mvCbCrFFT);
mp4_ComputeChromaMV(&mvForw[2], &mvCbCrFFB);
mp4_ComputeChromaMV(&mvBack[0], &mvCbCrBFT);
mp4_ComputeChromaMV(&mvBack[2], &mvCbCrBFB);
}
ippiAverage16x16_8u_C1IR(tmpMB, 16, pYc, stepYc);
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, cbpb, scan) != MP4_STATUS_OK)
goto Err_1;
if (!dct_type) {
mp4_AddResidual(cbpb & 32, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpb & 32, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_Copy8x8HP_8u(pCbp, stepCbp, pCbc, stepCbc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCrp, stepCrp, pCrc, stepCrc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCbn, stepCbn, tmpMB, 8, &mvCbCrB, 0);
mp4_Copy8x8HP_8u(pCrn, stepCrn, tmpMB+64, 8, &mvCbCrB, 0);
} else {
mp4_Copy8x4HP_8u(pCbp+(mb_ftfr ? stepCbp : 0), stepCbp*2, pCbc, stepCbc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_ftfr ? stepCrp : 0), stepCrp*2, pCrc, stepCrc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCbp+(mb_fbfr ? stepCbp : 0), stepCbp*2, pCbc+stepCbc, stepCbc*2, &mvCbCrFFB, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_fbfr ? stepCrp : 0), stepCrp*2, pCrc+stepCrc, stepCrc*2, &mvCbCrFFB, 0);
mp4_Copy8x4HP_8u(pCbn+(mb_btfr ? stepCbn : 0), stepCbn*2, tmpMB, 16, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCrn+(mb_btfr ? stepCrn : 0), stepCrn*2, tmpMB+64, 16, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCbn+(mb_bbfr ? stepCbn : 0), stepCbn*2, tmpMB+8, 16, &mvCbCrBFB, 0);
mp4_Copy8x4HP_8u(pCrn+(mb_bbfr ? stepCrn : 0), stepCrn*2, tmpMB+64+8, 16, &mvCbCrBFB, 0);
}
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCbc, stepCbc);
ippiAverage8x8_8u_C1IR(tmpMB+64, 8, pCrc, stepCrc);
mp4_AddResidual(cbpb & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpb & 1, pCrc, stepCrc, coeffMB+320);
} else { // IPPVC_MBTYPE_DIRECT
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_DIRECT);
field_prediction = pMBinfo->field_info & 1;
if (!field_prediction) {
// frame direct mode
if (mp4_DecodeMV_Direct(pInfo, pMBinfo->mv, mvForw, mvBack, TRB, TRD, modb, pMBinfo->type) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_ComputeChroma4MVQ(mvForw, &mvCbCrF);
mp4_Limit4MVQ(mvForw, mvForw, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(mvBack, &mvCbCrB);
mp4_Limit4MVQ(mvBack, mvBack, &limitRectL, dx, dy, 8);
pc = pYc;
pr = pYp;
pn = pYn;
mp4_Copy8x8QP_8u(pr, stepYp, pc, stepYc, &mvForw[0], 0);
mp4_Copy8x8QP_8u(pn, stepYn, tmpMB, 16, &mvBack[0], 0);
mp4_Copy8x8QP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[1], 0);
mp4_Copy8x8QP_8u(pn+8, stepYn, tmpMB+8, 16, &mvBack[1], 0);
pc = pYc + stepYc * 8;
pr = pYp + stepYp * 8;
pn = pYn + stepYn * 8;
mp4_Copy8x8QP_8u(pr, stepYp, pc, stepYc, &mvForw[2], 0);
mp4_Copy8x8QP_8u(pn, stepYn, tmpMB+128, 16, &mvBack[2], 0);
mp4_Copy8x8QP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[3], 0);
mp4_Copy8x8QP_8u(pn+8, stepYn, tmpMB+136, 16, &mvBack[3], 0);
} else {
mp4_ComputeChroma4MV(mvForw, &mvCbCrF);
mp4_Limit4MV(mvForw, mvForw, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(mvBack, &mvCbCrB);
mp4_Limit4MV(mvBack, mvBack, &limitRectL, dx, dy, 8);
pc = pYc;
pr = pYp;
pn = pYn;
mp4_Copy8x8HP_8u(pr, stepYp, pc, stepYc, &mvForw[0], 0);
mp4_Copy8x8HP_8u(pn, stepYn, tmpMB, 16, &mvBack[0], 0);
mp4_Copy8x8HP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[1], 0);
mp4_Copy8x8HP_8u(pn+8, stepYn, tmpMB+8, 16, &mvBack[1], 0);
pc = pYc + stepYc * 8;
pr = pYp + stepYp * 8;
pn = pYn + stepYn * 8;
mp4_Copy8x8HP_8u(pr, stepYp, pc, stepYc, &mvForw[2], 0);
mp4_Copy8x8HP_8u(pn, stepYn, tmpMB+128, 16, &mvBack[2], 0);
mp4_Copy8x8HP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[3], 0);
mp4_Copy8x8HP_8u(pn+8, stepYn, tmpMB+136, 16, &mvBack[3], 0);
}
mp4_LimitMV(&mvCbCrF, &mvCbCrF, &limitRectC, dx >> 1, dy >> 1, 8);
mp4_LimitMV(&mvCbCrB, &mvCbCrB, &limitRectC, dx >> 1, dy >> 1, 8);
} else {
mb_ftfr = (pMBinfo->field_info >> 1) & 1;
mb_fbfr = (pMBinfo->field_info >> 2) & 1;
if (mp4_DecodeMV_DirectField(pInfo, mb_ftfr, mb_fbfr, &mvField[0], &mvField[1], &mvForw[0], &mvForw[2], &mvBack[0], &mvBack[2], TRB, TRD, modb) != MP4_STATUS_OK)
goto Err_1;
if (quarter_sample) {
mp4_LimitFMVQ(&mvForw[0], &mvForw[0], &limitRectL, dx, dy, 16);
mp4_LimitFMVQ(&mvForw[2], &mvForw[2], &limitRectL, dx, dy, 16);
mp4_LimitFMVQ(&mvBack[0], &mvBack[0], &limitRectL, dx, dy, 16);
mp4_LimitFMVQ(&mvBack[2], &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8QP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mp4_Copy16x8QP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
mp4_Copy16x8QP_8u(pYn/*+stepYn*mb_btfr*/, stepYn*2, tmpMB, 32, &mvBack[0], 0);
mp4_Copy16x8QP_8u(pYn+stepYn/**mb_bbfr*/, stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
mvForw[0].dx = (int16_t)mp4_Div2(mvForw[0].dx);
mvForw[0].dy = (int16_t)(mp4_Div2(mvForw[0].dy*2) >> 1);
mvForw[2].dx = (int16_t)mp4_Div2(mvForw[2].dx);
mvForw[2].dy = (int16_t)(mp4_Div2(mvForw[2].dy*2) >> 1);
mvBack[0].dx = (int16_t)mp4_Div2(mvBack[0].dx);
mvBack[0].dy = (int16_t)(mp4_Div2(mvBack[0].dy*2) >> 1);
mvBack[2].dx = (int16_t)mp4_Div2(mvBack[2].dx);
mvBack[2].dy = (int16_t)(mp4_Div2(mvBack[2].dy*2) >> 1);
} else {
mp4_LimitFMV(&mvForw[0], &mvForw[0], &limitRectL, dx, dy, 16);
mp4_LimitFMV(&mvForw[2], &mvForw[2], &limitRectL, dx, dy, 16);
mp4_LimitFMV(&mvBack[0], &mvBack[0], &limitRectL, dx, dy, 16);
mp4_LimitFMV(&mvBack[2], &mvBack[2], &limitRectL, dx, dy, 16);
mp4_Copy16x8HP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
mp4_Copy16x8HP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
mp4_Copy16x8HP_8u(pYn/*+stepYn*mb_btfr*/, stepYn*2, tmpMB, 32, &mvBack[0], 0);
mp4_Copy16x8HP_8u(pYn+stepYn/**mb_bbfr*/, stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
}
mp4_ComputeChromaMV(&mvForw[0], &mvCbCrFFT);
mp4_ComputeChromaMV(&mvForw[2], &mvCbCrFFB);
mp4_ComputeChromaMV(&mvBack[0], &mvCbCrBFT);
mp4_ComputeChromaMV(&mvBack[2], &mvCbCrBFB);
}
ippiAverage16x16_8u_C1IR(tmpMB, 16, pYc, stepYc);
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, cbpb, scan) != MP4_STATUS_OK)
goto Err_1;
if (!dct_type) {
mp4_AddResidual(cbpb & 32, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpb & 32, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpb & 16, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpb & 8, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpb & 4, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_Copy8x8HP_8u(pCbp, stepCbp, pCbc, stepCbc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCrp, stepCrp, pCrc, stepCrc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCbn, stepCbn, tmpMB, 8, &mvCbCrB, 0);
mp4_Copy8x8HP_8u(pCrn, stepCrn, tmpMB+64, 8, &mvCbCrB, 0);
} else {
mp4_Copy8x4HP_8u(pCbp+(mb_ftfr ? stepCbp : 0), stepCbp*2, pCbc, stepCbc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_ftfr ? stepCrp : 0), stepCrp*2, pCrc, stepCrc*2, &mvCbCrFFT, 0);
mp4_Copy8x4HP_8u(pCbp+(mb_fbfr ? stepCbp : 0), stepCbp*2, pCbc+stepCbc, stepCbc*2, &mvCbCrFFB, 0);
mp4_Copy8x4HP_8u(pCrp+(mb_fbfr ? stepCrp : 0), stepCrp*2, pCrc+stepCrc, stepCrc*2, &mvCbCrFFB, 0);
mp4_Copy8x4HP_8u(pCbn/*+(mb_btfr ? stepCbn : 0)*/, stepCbn*2, tmpMB, 16, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCrn/*+(mb_btfr ? stepCrn : 0)*/, stepCrn*2, tmpMB+64, 16, &mvCbCrBFT, 0);
mp4_Copy8x4HP_8u(pCbn+/*(mb_bbfr ? */stepCbn/* : 0)*/, stepCbn*2, tmpMB+8, 16, &mvCbCrBFB, 0);
mp4_Copy8x4HP_8u(pCrn+/*(mb_bbfr ? */stepCrn/* : 0)*/, stepCrn*2, tmpMB+64+8, 16, &mvCbCrBFB, 0);
}
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCbc, stepCbc);
ippiAverage8x8_8u_C1IR(tmpMB+64, 8, pCrc, stepCrc);
mp4_AddResidual(cbpb & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpb & 1, pCrc, stepCrc, coeffMB+320);
}
}
//mbCurr ++;
mbInVideoPacket ++;
colNum ++;
pMBinfo ++;
mvField += 2;
if (colNum == mbPerRow) {
colNum = 0;
rowNum ++;
if (rowNum == mbPerCol)
return sts;
pYc += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
pCbc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
pCrc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
pYp += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYp << 4) - stepYp;
pCbp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbp << 3) - stepCbp;
pCrp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrp << 3) - stepCrp;
pYn += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYn << 4) - stepYn;
pCbn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbn << 3) - stepCbn;
pCrn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrn << 3) - stepCrn;
// reset MV predictors at new row
mvForwT.dx = mvForwT.dy = mvBackT.dx = mvBackT.dy = mvForwB.dx = mvForwB.dy = mvBackB.dx = mvBackB.dy = 0;
} else {
pYc += 16; pCrc += 8; pCbc += 8;
pYp += 16; pCrp += 8; pCbp += 8;
pYn += 16; pCrn += 8; pCbn += 8;
}
if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
int32_t found;
ErrRet_1:
if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK) {
if (found) {
quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant_scale;
mbCurr = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num;
mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, mbCurr - rowNum * mbPerRow - colNum);
rowNum = mbCurr / mbPerRow;
colNum = mbCurr % mbPerRow;
pYc = pInfo->VisualObject.cFrame->pY + (rowNum * stepYc + colNum) * 16; pCbc = pInfo->VisualObject.cFrame->pCb + (rowNum * stepCbc + colNum) * 8; pCrc = pInfo->VisualObject.cFrame->pCr + (rowNum * stepCrc + colNum) * 8;
pYp = pInfo->VisualObject.rFrame->pY + (rowNum * stepYp + colNum) * 16; pCbp = pInfo->VisualObject.rFrame->pCb + (rowNum * stepCbp + colNum) * 8; pCrp = pInfo->VisualObject.rFrame->pCr + (rowNum * stepCrp + colNum) * 8;
pYn = pInfo->VisualObject.nFrame->pY + (rowNum * stepYn + colNum) * 16; pCbn = pInfo->VisualObject.nFrame->pCb + (rowNum * stepCbn + colNum) * 8; pCrn = pInfo->VisualObject.nFrame->pCr + (rowNum * stepCrn + colNum) * 8;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
break;
}
} else
goto Err_1;
}
}
}
Err_1:
sts = MP4_STATUS_ERROR;
if (pInfo->stopOnErr)
return sts;
if (pInfo->VisualObject.VideoObject.resync_marker_disable || !mp4_SeekResyncMarker(pInfo))
{
mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, pInfo->VisualObject.VideoObject.MacroBlockPerVOP - rowNum * mbPerRow - colNum);
return sts;
}
goto ErrRet_1;
}
// decode usual B-VOP
for (;;) {
IppMotionVector mvCbCrF, mvCbCrB, mvForw, mvBack, mvForwLim, mvBackLim;
mbInVideoPacket = 0;
// reset MV predictors at new VideoPacket
mvForw.dx = mvForw.dy = mvBack.dx = mvBack.dy = 0;
// decode B-VOP macroblocks
for (;;) {
if (pMBinfo->not_coded) {
ippiCopy16x16_8u_C1R(pYp, stepYp, pYc, stepYc);
ippiCopy8x8_8u_C1R(pCbp, stepCbp, pCbc, stepCbc);
ippiCopy8x8_8u_C1R(pCrp, stepCrp, pCrc, stepCrc);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
} else {
cbpb = 0;
if (mp4_GetBit(pInfo)) {
modb = 2;
mb_type = IPPVC_MBTYPE_DIRECT;
} else {
modb = mp4_GetBit(pInfo);
// decode mb_type
code = mp4_ShowBits9(pInfo, 4);
if (code != 0) {
mb_type = mp4_BVOPmb_type[code].code;
mp4_FlushBits(pInfo, mp4_BVOPmb_type[code].len);
} else {
mp4_Error("Error when decode mb_type of B-VOP macroblock");
goto Err_2;
}
if (modb == 0)
cbpb = mp4_GetBits9(pInfo, 6);
if (mb_type != IPPVC_MBTYPE_DIRECT && cbpb != 0)
mp4_UpdateQuant_B(pInfo, quant);
}
// coordinates of current MB for limitation
dx = colNum * 16;
dy = rowNum * 16;
if (mb_type == IPPVC_MBTYPE_FORWARD) {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_FORWARD);
if (mp4_DecodeMV(pInfo, &mvForw, fcode_forward) != MP4_STATUS_OK)
goto Err_2;
if (quarter_sample) {
mp4_LimitMVQ(&mvForw, &mvForwLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvForwLim, &mvCbCrF);
mp4_Copy16x16QP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim, 0);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 32, pYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 16, pYc+8, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 8, pYc+8*stepYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 4, pYc+8*stepYc+8, stepYc, Err_2);
} else {
mp4_LimitMV(&mvForw, &mvForwLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvForwLim, &mvCbCrF);
if (cbpb & 60) {
mp4_DecodeMCBlockInter_MPEG4(cbpb & 32, pYp, stepYp, pYc, stepYc, mvForwLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 16, pYp+8, stepYp, pYc+8, stepYc, mvForwLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 8, pYp+8*stepYp, stepYp, pYc+8*stepYc, stepYc, mvForwLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 4, pYp+8*stepYp+8, stepYp, pYc+8*stepYc+8, stepYc, mvForwLim, 0, Err_2);
} else {
mp4_Copy16x16HP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim, 0);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
}
}
mp4_DecodeMCBlockInter_MPEG4(cbpb & 2, pCbp, stepCbp, pCbc, stepCbc, mvCbCrF, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 1, pCrp, stepCrp, pCrc, stepCrc, mvCbCrF, 0, Err_2);
} else if (mb_type == IPPVC_MBTYPE_BACKWARD) {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_BACKWARD);
if (mp4_DecodeMV(pInfo, &mvBack, fcode_backward) != MP4_STATUS_OK)
goto Err_2;
if (quarter_sample) {
mp4_LimitMVQ(&mvBack, &mvBackLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvBackLim, &mvCbCrB);
mp4_Copy16x16QP_8u(pYn, stepYn, pYc, stepYc, &mvBackLim, 0);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 32, pYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 16, pYc+8, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 8, pYc+8*stepYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 4, pYc+8*stepYc+8, stepYc, Err_2);
} else {
mp4_LimitMV(&mvBack, &mvBackLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvBackLim, &mvCbCrB);
if (cbpb & 60) {
mp4_DecodeMCBlockInter_MPEG4(cbpb & 32, pYn, stepYn, pYc, stepYc, mvBackLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 16, pYn+8, stepYn, pYc+8, stepYc, mvBackLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 8, pYn+8*stepYn, stepYp, pYc+8*stepYc, stepYc, mvBackLim, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 4, pYn+8*stepYn+8, stepYp, pYc+8*stepYc+8, stepYc, mvBackLim, 0, Err_2);
} else {
mp4_Copy16x16HP_8u(pYn, stepYn, pYc, stepYc, &mvBackLim, 0);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);
}
}
mp4_DecodeMCBlockInter_MPEG4(cbpb & 2, pCbn, stepCbn, pCbc, stepCbc, mvCbCrB, 0, Err_2);
mp4_DecodeMCBlockInter_MPEG4(cbpb & 1, pCrn, stepCrn, pCrc, stepCrc, mvCbCrB, 0, Err_2);
}
else if (mb_type == IPPVC_MBTYPE_INTERPOLATE)
{
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_INTERPOLATE);
if (mp4_DecodeMV(pInfo, &mvForw, fcode_forward) != MP4_STATUS_OK)
goto Err_2;
if (mp4_DecodeMV(pInfo, &mvBack, fcode_backward) != MP4_STATUS_OK)
goto Err_2;
if (quarter_sample)
{
mp4_LimitMVQ(&mvForw, &mvForwLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvForwLim, &mvCbCrF);
mp4_Copy16x16QP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim, 0);
mp4_LimitMVQ(&mvBack, &mvBackLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(&mvBackLim, &mvCbCrB);
mp4_Copy16x16QP_8u(pYn, stepYn, tmpMB, 16, &mvBackLim, 0);
}
else
{
mp4_LimitMV(&mvForw, &mvForwLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvForwLim, &mvCbCrF);
mp4_Copy16x16HP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim, 0);
mp4_LimitMV(&mvBack, &mvBackLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvBackLim, &mvCbCrB);
mp4_Copy16x16HP_8u(pYn, stepYn, tmpMB, 16, &mvBackLim, 0);
}
ippiAverage16x16_8u_C1IR(tmpMB, 16, pYc, stepYc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 32, pYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 16, pYc+8, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 8, pYc+8*stepYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 4, pYc+8*stepYc+8, stepYc, Err_2);
mp4_Copy8x8HP_8u(pCbp, stepCbp, pCbc, stepCbc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCbn, stepCbn, tmpMB, 8, &mvCbCrB, 0);
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCbc, stepCbc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 2, pCbc, stepCbc, Err_2);
mp4_Copy8x8HP_8u(pCrp, stepCrp, pCrc, stepCrc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCrn, stepCrn, tmpMB, 8, &mvCbCrB, 0);
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCrc, stepCrc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 1, pCrc, stepCrc, Err_2);
}
else
{ // IPPVC_MBTYPE_DIRECT
IppMotionVector mvForw[4], mvBack[4], mvForwLim[4], mvBackLim[4];
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_DIRECT);
//f MVs of collocated block of recently decoded I or P frame used in Direct mode
if (mp4_DecodeMV_Direct(pInfo, pMBinfo->mv, mvForw, mvBack, TRB, TRD, modb, pMBinfo->type) != MP4_STATUS_OK)
goto Err_2;
if (quarter_sample)
{
mp4_Limit4MVQ(mvForw, mvForwLim, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(mvForw, &mvCbCrF);
mp4_Limit4MVQ(mvBack, mvBackLim, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(mvBack, &mvCbCrB);
mp4_Copy8x8QP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim[0], 0);
mp4_Copy8x8QP_8u(pYn, stepYn, tmpMB, 16, &mvBackLim[0], 0);
mp4_Copy8x8QP_8u(pYp+8, stepYp, pYc+8, stepYc, &mvForwLim[1], 0);
mp4_Copy8x8QP_8u(pYn+8, stepYn, tmpMB+8, 16, &mvBackLim[1], 0);
mp4_Copy8x8QP_8u(pYp+8*stepYp, stepYp, pYc+8*stepYc, stepYc, &mvForwLim[2], 0);
mp4_Copy8x8QP_8u(pYn+8*stepYn, stepYn, tmpMB+8*16, 16, &mvBackLim[2], 0);
mp4_Copy8x8QP_8u(pYp+8*stepYp+8, stepYp, pYc+8*stepYc+8, stepYc, &mvForwLim[3], 0);
mp4_Copy8x8QP_8u(pYn+8*stepYn+8, stepYn, tmpMB+8*16+8, 16, &mvBackLim[3], 0);
}
else
{
if (pMBinfo->type == IPPVC_MBTYPE_INTER4V) {
mp4_Limit4MV(mvForw, mvForwLim, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(mvForw, &mvCbCrF);
mp4_Limit4MV(mvBack, mvBackLim, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(mvBack, &mvCbCrB);
mp4_Copy8x8HP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim[0], 0);
mp4_Copy8x8HP_8u(pYn, stepYn, tmpMB, 16, &mvBackLim[0], 0);
mp4_Copy8x8HP_8u(pYp+8, stepYp, pYc+8, stepYc, &mvForwLim[1], 0);
mp4_Copy8x8HP_8u(pYn+8, stepYn, tmpMB+8, 16, &mvBackLim[1], 0);
mp4_Copy8x8HP_8u(pYp+8*stepYp, stepYp, pYc+8*stepYc, stepYc, &mvForwLim[2], 0);
mp4_Copy8x8HP_8u(pYn+8*stepYn, stepYn, tmpMB+8*16, 16, &mvBackLim[2], 0);
mp4_Copy8x8HP_8u(pYp+8*stepYp+8, stepYp, pYc+8*stepYc+8, stepYc, &mvForwLim[3], 0);
mp4_Copy8x8HP_8u(pYn+8*stepYn+8, stepYn, tmpMB+8*16+8, 16, &mvBackLim[3], 0);
}
else
{
mp4_LimitMV(mvForw, mvForwLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(mvForwLim, &mvCbCrF);
mp4_LimitMV(mvBack, mvBackLim, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(mvBackLim, &mvCbCrB);
mp4_Copy16x16HP_8u(pYp, stepYp, pYc, stepYc, &mvForwLim[0], 0);
mp4_Copy16x16HP_8u(pYn, stepYn, tmpMB, 16, &mvBackLim[0], 0);
}
}
ippiAverage16x16_8u_C1IR(tmpMB, 16, pYc, stepYc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 32, pYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 16, pYc+8, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 8, pYc+8*stepYc, stepYc, Err_2);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 4, pYc+8*stepYc+8, stepYc, Err_2);
mp4_LimitMV(&mvCbCrF, &mvCbCrF, &limitRectC, dx >> 1, dy >> 1, 8);
mp4_LimitMV(&mvCbCrB, &mvCbCrB, &limitRectC, dx >> 1, dy >> 1, 8);
mp4_Copy8x8HP_8u(pCbp, stepCbp, pCbc, stepCbc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCbn, stepCbn, tmpMB, 8, &mvCbCrB, 0);
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCbc, stepCbc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 2, pCbc, stepCbc, Err_2);
mp4_Copy8x8HP_8u(pCrp, stepCrp, pCrc, stepCrc, &mvCbCrF, 0);
mp4_Copy8x8HP_8u(pCrn, stepCrn, tmpMB, 8, &mvCbCrB, 0);
ippiAverage8x8_8u_C1IR(tmpMB, 8, pCrc, stepCrc);
mp4_DecodeReconBlockInter_MPEG4(cbpb & 1, pCrc, stepCrc, Err_2);
}
}
//mbCurr ++;
mbInVideoPacket ++;
colNum ++;
pMBinfo ++;
if (colNum == mbPerRow)
{
colNum = 0;
rowNum ++;
if (rowNum == mbPerCol)
return sts;
pYc += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
pCbc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
pCrc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
pYp += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYp << 4) - stepYp;
pCbp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbp << 3) - stepCbp;
pCrp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrp << 3) - stepCrp;
pYn += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYn << 4) - stepYn;
pCbn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbn << 3) - stepCbn;
pCrn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrn << 3) - stepCrn;
// reset MV predictors at new row
mvForw.dx = mvForw.dy = mvBack.dx = mvBack.dy = 0;
}
else
{
pYc += 16; pCrc += 8; pCbc += 8;
pYp += 16; pCrp += 8; pCbp += 8;
pYn += 16; pCrn += 8; pCbn += 8;
}
if (!pInfo->VisualObject.VideoObject.resync_marker_disable)
{
int32_t found;
ErrRet_2:
if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK)
{
if (found)
{
quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant_scale;
mbCurr = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num;
mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, mbCurr - rowNum * mbPerRow - colNum);
rowNum = mbCurr / mbPerRow;
colNum = mbCurr % mbPerRow;
pYc = pInfo->VisualObject.cFrame->pY + (rowNum * stepYc + colNum) * 16; pCbc = pInfo->VisualObject.cFrame->pCb + (rowNum * stepCbc + colNum) * 8; pCrc = pInfo->VisualObject.cFrame->pCr + (rowNum * stepCrc + colNum) * 8;
pYp = pInfo->VisualObject.rFrame->pY + (rowNum * stepYp + colNum) * 16; pCbp = pInfo->VisualObject.rFrame->pCb + (rowNum * stepCbp + colNum) * 8; pCrp = pInfo->VisualObject.rFrame->pCr + (rowNum * stepCrp + colNum) * 8;
pYn = pInfo->VisualObject.nFrame->pY + (rowNum * stepYn + colNum) * 16; pCbn = pInfo->VisualObject.nFrame->pCb + (rowNum * stepCbn + colNum) * 8; pCrn = pInfo->VisualObject.nFrame->pCr + (rowNum * stepCrn + colNum) * 8;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
break;
}
}
else
goto Err_2;
}
}
}
Err_2:
sts = MP4_STATUS_ERROR;
if (pInfo->stopOnErr)
return sts;
if (pInfo->VisualObject.VideoObject.resync_marker_disable || !mp4_SeekResyncMarker(pInfo))
{
mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, pInfo->VisualObject.VideoObject.MacroBlockPerVOP - rowNum * mbPerRow - colNum);
return sts;
}
goto ErrRet_2;
}
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