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winamp/Src/mpeg4dec/mp4decvops.c

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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 S-VOPs
//
*/
#include "mp4def.h"
#include "mp4dec.h"
/*
// decode MPEG-4 SVOP
*/
mp4_Status mp4_DecodeVOP_S(mp4_Info* pInfo)
{
__ALIGN16(int16_t, coeffMB, 64*6);
int32_t quant, quantPred, i, j, dcVLC, nmb, dx, dy, pat;
int32_t stepYr, stepYc, stepCbr, stepCbc, stepCrr, stepCrc, mbPerRow, mbPerCol;
int32_t mbCurr, mbInVideoPacket, colNum, rowNum, stepF[6];
uint8_t *pYc, *pCbc, *pCrc, *pYr, *pCbr, *pCrr, *pF[6];
int32_t mb_not_coded, mb_type, cbpc, cbpy, ac_pred_flag, cbpyPrev, mcsel;
int32_t scan, obmc_disable, rt, quarter_sample, interlaced, fcode_forward;
IppiRect limitRectL, limitRectC;
IppMotionVector mvCur[4], mvPrev[4], mvTmp[4], mvCbCr;
mp4_MacroBlock *pMBinfo;
IppiRect spriteRect, vopRect;
mp4_Status sts;
if (!pInfo->VisualObject.cFrame)
pInfo->VisualObject.cFrame = CreateFrame(&pInfo->VisualObject);
mbPerRow = pInfo->VisualObject.VideoObject.MacroBlockPerRow;
mbPerCol = pInfo->VisualObject.VideoObject.MacroBlockPerCol;
stepYc = pInfo->VisualObject.cFrame->stepY;
stepYr = pInfo->VisualObject.rFrame->stepY;
stepCbc = pInfo->VisualObject.cFrame->stepCb;
stepCbr = pInfo->VisualObject.rFrame->stepCb;
stepCrc = pInfo->VisualObject.cFrame->stepCr;
stepCrr = pInfo->VisualObject.rFrame->stepCr;
pYc = pInfo->VisualObject.cFrame->pY;
pCbc = pInfo->VisualObject.cFrame->pCb;
pCrc = pInfo->VisualObject.cFrame->pCr;
pYr = pInfo->VisualObject.rFrame->pY;
pCbr = pInfo->VisualObject.rFrame->pCb;
pCrr = pInfo->VisualObject.rFrame->pCr;
stepF[0] = stepF[1] = stepF[2] = stepF[3] = stepYc; stepF[4] = stepCbc; stepF[5] = stepCrc;
// Bounding rectangle 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;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo;
rt = pInfo->VisualObject.VideoObject.VideoObjectPlane.rounding_type;
quarter_sample = pInfo->VisualObject.VideoObject.quarter_sample;
obmc_disable = pInfo->VisualObject.VideoObject.obmc_disable;
interlaced = pInfo->VisualObject.VideoObject.interlaced;
scan = pInfo->VisualObject.VideoObject.VideoObjectPlane.alternate_vertical_scan_flag ? IPPVC_SCAN_VERTICAL : IPPVC_SCAN_ZIGZAG;
nmb = pInfo->VisualObject.VideoObject.MacroBlockPerVOP;
quant = quantPred = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant;
mbCurr = colNum = rowNum = 0;
cbpc = 0;
// init WarpSpec for Sprites or GMC
vopRect.x = 0;
vopRect.y = 0;
vopRect.width = pInfo->VisualObject.VideoObject.width;
vopRect.height = pInfo->VisualObject.VideoObject.height;
if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_STATIC) {
spriteRect.x = pInfo->VisualObject.VideoObject.sprite_left_coordinate;
spriteRect.y = pInfo->VisualObject.VideoObject.sprite_top_coordinate;
spriteRect.width = pInfo->VisualObject.VideoObject.sprite_width;
spriteRect.height = pInfo->VisualObject.VideoObject.sprite_height;
fcode_forward = 1;
} else {
spriteRect = vopRect; // for shapes they may be different !!!!!!
fcode_forward = pInfo->VisualObject.VideoObject.VideoObjectPlane.fcode_forward;
}
ippiWarpInit_MPEG4(pInfo->VisualObject.VideoObject.WarpSpec,
pInfo->VisualObject.VideoObject.VideoObjectPlane.warping_mv_code_du,
pInfo->VisualObject.VideoObject.VideoObjectPlane.warping_mv_code_dv,
pInfo->VisualObject.VideoObject.sprite_warping_points,
pInfo->VisualObject.VideoObject.sprite_enable,
pInfo->VisualObject.VideoObject.sprite_warping_accuracy,
rt, quarter_sample, fcode_forward,
&spriteRect, &vopRect);
// decode basic sprites
if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_STATIC)
{
//if (pInfo->VisualObject.VideoObject.shape != MP4_SHAPE_TYPE_RECTANGULAR) {
// if (mp4_InitVOPShape(pInfo) != MP4_STATUS_OK)
// return MP4_STATUS_ERROR;
//}
ippiWarpLuma_MPEG4_8u_C1R(pInfo->VisualObject.sFrame->pY, pInfo->VisualObject.sFrame->stepY,
pYc, stepYc, &vopRect, pInfo->VisualObject.VideoObject.WarpSpec);
if (pInfo->VisualObject.VideoObject.sprite_brightness_change)
ippiChangeSpriteBrightness_MPEG4_8u_C1IR(pYc, stepYc, vopRect.width, vopRect.height, pInfo->VisualObject.VideoObject.VideoObjectPlane.brightness_change_factor);
vopRect.width >>= 1; vopRect.height >>= 1;
ippiWarpChroma_MPEG4_8u_P2R(pInfo->VisualObject.sFrame->pCb, pInfo->VisualObject.sFrame->stepCb,
pInfo->VisualObject.sFrame->pCr, pInfo->VisualObject.sFrame->stepCr,
pCbc, stepCbc, pCrc, stepCrc, &vopRect, pInfo->VisualObject.VideoObject.WarpSpec);
return MP4_STATUS_OK;
}
sts = MP4_STATUS_OK;
// decode data_partitioned S(GMC)-VOP
if (pInfo->VisualObject.VideoObject.data_partitioned) {
for (;;) {
mp4_DataPartMacroBlock *pMBdp;
int32_t x, y;
x = colNum;
y = rowNum;
// reset Intra prediction buffer on new Video_packet
mp4_ResetIntraPredBuffer(pInfo);
pMBdp = &pInfo->VisualObject.VideoObject.DataPartBuff[mbCurr];
pMBinfo = &pInfo->VisualObject.VideoObject.MBinfo[mbCurr];
mbInVideoPacket = 0;
// decode not_coded/mcsel/mb_type/cbpc/MV part
for (;;) {
mb_not_coded = mp4_GetBit(pInfo);
if (mb_not_coded) {
mb_type = IPPVC_MBTYPE_INTER;
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
} else {
if (mp4_DecodeMCBPC_P(pInfo, &mb_type, &cbpc, 1) != MP4_STATUS_OK)
goto Err_2;
}
if (mb_type != IPPVC_MB_STUFFING) {
if (mbInVideoPacket == nmb - mbCurr) {
mp4_Error("DC Marker missed");
goto Err_2;
}
pMBinfo->validPred = 1;
if (mb_type < IPPVC_MBTYPE_INTER4V && !mb_not_coded)
mcsel = mp4_GetBit(pInfo);
else
mcsel = mb_not_coded;
if (!mcsel) {
if (mb_type <= IPPVC_MBTYPE_INTER4V) {
if (mb_type != IPPVC_MBTYPE_INTER4V) {
if (mp4_PredictDecode1MV(pInfo, pMBinfo, y, x) != MP4_STATUS_OK)
goto Err_2;
pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
} else {
if (mp4_PredictDecode4MV(pInfo, pMBinfo, y, x) != MP4_STATUS_OK)
goto Err_2;
}
} else {
mp4_Zero4MV(pMBinfo->mv);
}
} else {
ippiCalcGlobalMV_MPEG4(x << 4, y << 4, pMBinfo->mv, pInfo->VisualObject.VideoObject.WarpSpec);
pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
}
pMBinfo->not_coded = (uint8_t)mb_not_coded;
pMBinfo->type = (uint8_t)mb_type;
pMBinfo ++;
pMBdp->pat = (uint8_t)cbpc;
pMBdp->mcsel = (uint8_t)mcsel;
pMBdp ++;
mbInVideoPacket ++;
x ++;
if (x == mbPerRow) {
x = 0;
y ++;
}
}
if (mp4_ShowBits(pInfo, 17) == MP4_MV_MARKER) {
mp4_GetBits(pInfo, 17);
break;
}
}
pMBdp = &pInfo->VisualObject.VideoObject.DataPartBuff[mbCurr];
pMBinfo = &pInfo->VisualObject.VideoObject.MBinfo[mbCurr];
// decode ac_pred_flag/cbpy/dquant/IntraDC part
for (i = 0; i < mbInVideoPacket; i ++) {
if (!pMBinfo->not_coded) {
mb_type = pMBinfo->type;
if (mb_type >= IPPVC_MBTYPE_INTRA)
pMBdp->ac_pred_flag = (uint8_t)mp4_GetBit(pInfo);
if (mp4_DecodeCBPY_P(pInfo, &cbpy, mb_type) != MP4_STATUS_OK)
goto Err_2;
pMBdp->pat = (uint8_t)((cbpy << 2) + pMBdp->pat);
quantPred = quant;
if (mb_type == IPPVC_MBTYPE_INTER_Q || mb_type == IPPVC_MBTYPE_INTRA_Q)
mp4_UpdateQuant(pInfo, quant);
pMBdp->quant = (uint8_t)quant;
if (i == 0)
quantPred = quant;
// decode DC coefficient of Intra blocks
dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
if ((mb_type >= IPPVC_MBTYPE_INTRA) && dcVLC) {
for (j = 0; j < 6; j ++) {
if (ippiDecodeDCIntra_MPEG4_1u16s(&pInfo->bufptr, &pInfo->bitoff, &pMBdp->dct_dc[j], j < 4 ? IPPVC_BLOCK_LUMA : IPPVC_BLOCK_CHROMA) != ippStsNoErr)
goto Err_2;
}
}
} else
pMBdp->pat = 0;
pMBinfo->not_coded = 0; // for B-VOP all MB have MVs
if (pMBdp->mcsel)
pMBinfo->type = IPPVC_MBTYPE_INTRA; // for OBMC MVs
pMBdp ++;
pMBinfo ++;
}
if (mbCurr + mbInVideoPacket < nmb)
pMBinfo->type = IPPVC_MBTYPE_INTRA; // for OBMC set first MB of the next videopacket as invalid for right MV
pMBdp = &pInfo->VisualObject.VideoObject.DataPartBuff[mbCurr];
pMBinfo = &pInfo->VisualObject.VideoObject.MBinfo[mbCurr];
// decode coeffs and reconstruct macroblocks
for (i = 0; i < mbInVideoPacket; i ++) {
if (colNum == 0) {
// reset B-prediction blocks on new row
mp4_ResetIntraPredBblock(pInfo);
}
quant = pMBdp->quant;
mb_type = pMBinfo->type;
mcsel = pMBdp->mcsel;
if (!mcsel && (mb_type >= IPPVC_MBTYPE_INTRA)) {
quantPred = (i == 0) ? quant : pMBdp[-1].quant;
dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
pF[0] = pYc; pF[1] = pYc + 8; pF[2] = pYc + 8 * stepYc; pF[3] = pYc + 8 * stepYc + 8; pF[4] = pCbc; pF[5] = pCrc;
if (mp4_DecodeIntraMB_DP(pInfo, pMBdp->dct_dc, colNum, pMBdp->pat, quant, dcVLC, pMBdp->ac_pred_flag, pF, stepF) != MP4_STATUS_OK)
goto Err_2;
} else {
mp4_UpdateIntraPredBuffInvalid(pInfo, colNum);
dx = colNum * 16;
dy = rowNum * 16;
pat = pMBdp->pat;
cbpy = pat >> 2;
cbpc = pat & 3;
if (pat)
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, pat, scan) != MP4_STATUS_OK)
goto Err_2;
if (!mcsel) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
if (quarter_sample) {
mp4_Limit4MVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(pMBinfo->mv, &mvCbCr);
} else {
mp4_Limit4MV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(pMBinfo->mv, &mvCbCr);
}
mp4_LimitMV(&mvCbCr, &mvCbCr, &limitRectC, dx >> 1, dy >> 1, 8);
} else {
if (quarter_sample) {
mp4_LimitMVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(mvCur, &mvCbCr);
} else {
mp4_LimitMV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(mvCur, &mvCbCr);
}
mvCur[1] = mvCur[2] = mvCur[3] = mvCur[0];
}
if (obmc_disable) {
if (quarter_sample) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8QP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8QP_8u(pYr+8*stepYr, stepYr, pYc+8*stepYc, stepYc, &mvCur[2], rt);
mp4_Copy8x8QP_8u(pYr+8*stepYr+8, stepYr, pYc+8*stepYc+8, stepYc, &mvCur[3], rt);
} else
mp4_Copy16x16QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
} else {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8HP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8HP_8u(pYr+8*stepYr, stepYr, pYc+8*stepYc, stepYc, &mvCur[2], rt);
mp4_Copy8x8HP_8u(pYr+8*stepYr+8, stepYr, pYc+8*stepYc+8, stepYc, &mvCur[3], rt);
} else
mp4_Copy16x16HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
}
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_OBMC(pInfo, pMBinfo, mvCur, colNum, rowNum, limitRectL, pYc, stepYc, pYr, stepYr, cbpy, coeffMB, 0);
}
mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
} else {
IppiRect mbRect;
mbRect.x = dx; mbRect.y = dy; mbRect.width = mbRect.height = 16;
ippiWarpLuma_MPEG4_8u_C1R(pInfo->VisualObject.rFrame->pY, stepYr, pYc, stepYc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
mbRect.x >>= 1; mbRect.y >>= 1; mbRect.width = mbRect.height = 8;
ippiWarpChroma_MPEG4_8u_P2R(pInfo->VisualObject.rFrame->pCb, stepCbr, pInfo->VisualObject.rFrame->pCr, stepCrr, pCbc, stepCbc, pCrc, stepCrc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
if (pat) {
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
}
}
}
pMBinfo ++;
pMBdp ++;
colNum ++;
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;
pYr += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYr << 4) - stepYr;
pCbr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbr << 3) - stepCbr;
pCrr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrr << 3) - stepCrr;
}
else
{
pYc += 16; pCrc += 8; pCbc += 8;
pYr += 16; pCrr += 8; pCbr += 8;
}
}
//mbCurr += mbInVideoPacket;
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;
mbInVideoPacket = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num - mbCurr;
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;
pYr = pInfo->VisualObject.rFrame->pY + (rowNum * stepYr + colNum) * 16; pCbr = pInfo->VisualObject.rFrame->pCb + (rowNum * stepCbr + colNum) * 8; pCrr = pInfo->VisualObject.rFrame->pCr + (rowNum * stepCrr + colNum) * 8;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
} else
goto Err_2;
} else
goto Err_2;
}
// mark MBs the previous videopacket as invalid for prediction
for (i = 1; i <= IPP_MIN(mbInVideoPacket, mbPerRow + 1); i ++)
pMBinfo[-i].validPred = 0;
}
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;
}
// decode not data_partitioned S-VOP
{
int32_t stepY, pYoff23, field_prediction, dct_type, dct_typePrev, mb_ftfr, mb_fbfr;
IppMotionVector mvCbCrT, mvCbCrB, *mvField = pInfo->VisualObject.VideoObject.FieldMV;
// warning "variable may be used without having been initialized"
dx = dy = ac_pred_flag = cbpy = cbpyPrev = field_prediction = dct_type = dct_typePrev = mb_ftfr = mb_fbfr = 0;
mvCbCr.dx = mvCbCr.dy = mvCbCrT.dx = mvCbCrT.dy = mvCbCrB.dx = mvCbCrB.dy = 0;
for (;;) {
// reset Intra prediction buffer on new Video_packet
mp4_ResetIntraPredBuffer(pInfo);
mbInVideoPacket = 0;
// decode blocks
for (;;) {
if (colNum == 0) {
// reset B-prediction blocks on new row
mp4_ResetIntraPredBblock(pInfo);
}
mb_not_coded = mp4_GetBit(pInfo);
mb_type = IPPVC_MBTYPE_INTER;
if (!mb_not_coded) {
if (mp4_DecodeMCBPC_P(pInfo, &mb_type, &cbpc, 1) != MP4_STATUS_OK)
goto Err_3;
}
if (mb_type != IPPVC_MB_STUFFING) {
if (!mb_not_coded) {
mcsel = (mb_type < IPPVC_MBTYPE_INTER4V) ? mp4_GetBit(pInfo) : 0;
if (mb_type >= IPPVC_MBTYPE_INTRA)
ac_pred_flag = mp4_GetBit(pInfo);
if (mp4_DecodeCBPY_P(pInfo, &cbpy, mb_type) != MP4_STATUS_OK)
goto Err_3;
quantPred = quant;
if (mb_type == IPPVC_MBTYPE_INTER_Q || mb_type == IPPVC_MBTYPE_INTRA_Q)
mp4_UpdateQuant(pInfo, quant);
if (interlaced) {
dct_type = 0;
field_prediction = 0;
if (mb_type >= IPPVC_MBTYPE_INTRA || (cbpy + cbpc) != 0)
dct_type = mp4_GetBit(pInfo);
if ((mb_type == IPPVC_MBTYPE_INTER || mb_type == IPPVC_MBTYPE_INTER_Q) && !mcsel) {
field_prediction = mp4_GetBit(pInfo);
if (field_prediction) {
mb_ftfr = mp4_GetBit(pInfo);
mb_fbfr = mp4_GetBit(pInfo);
}
}
}
} else {
mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
mcsel = 1;
field_prediction = 0;
}
pMBinfo->validPred = 1;
pMBinfo->not_coded = 0; // for B-VOP all MB have MVs
pMBinfo->type = (uint8_t)(mcsel ? IPPVC_MBTYPE_INTRA : mb_type); // for OBMC MVs
pMBinfo->field_info = (uint8_t)(field_prediction + (mb_ftfr << 1) + (mb_fbfr << 2));
if (mb_type >= IPPVC_MBTYPE_INTRA) {
if (mbInVideoPacket == 0)
quantPred = quant;
dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
if (dct_type) {
stepY = stepYc * 2;
pYoff23 = stepYc;
} else {
stepY = stepYc;
pYoff23 = 8 * stepYc;
}
stepF[0] = stepF[1] = stepF[2] = stepF[3] = stepY;
pF[0] = pYc; pF[1] = pYc + 8; pF[2] = pYc + pYoff23; pF[3] = pYc + pYoff23 + 8; pF[4] = pCbc; pF[5] = pCrc;
if (mp4_DecodeIntraMB(pInfo, colNum, (cbpy << 2) + cbpc, quant, dcVLC, ac_pred_flag, pF, stepF) != MP4_STATUS_OK)
goto Err_3;
mp4_Zero4MV(pMBinfo->mv);
} else {
mp4_UpdateIntraPredBuffInvalid(pInfo, colNum);
dx = colNum * 16;
dy = rowNum * 16;
if (!mcsel) {
if (!field_prediction) {
if (mb_type != IPPVC_MBTYPE_INTER4V) {
if (mp4_PredictDecode1MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK)
goto Err_3;
pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
if (quarter_sample) {
mp4_LimitMVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMVQ(mvCur, &mvCbCr);
} else {
mp4_LimitMV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(mvCur, &mvCbCr);
}
mvCur[1] = mvCur[2] = mvCur[3] = mvCur[0];
} else {
if (mp4_PredictDecode4MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK)
goto Err_3;
if (quarter_sample) {
mp4_Limit4MVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(pMBinfo->mv, &mvCbCr);
} else {
mp4_Limit4MV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(pMBinfo->mv, &mvCbCr);
}
mp4_LimitMV(&mvCbCr, &mvCbCr, &limitRectC, dx >> 1, dy >> 1, 8);
}
} else {
IppMotionVector mvFT, mvFB;
if (mp4_PredictDecodeFMV(pInfo, pMBinfo, rowNum, colNum, &mvFT, &mvFB) != MP4_STATUS_OK)
goto Err_3;
mvField[0] = mvFT; mvField[1] = mvFB;
if (quarter_sample) {
mp4_LimitFMVQ(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
mp4_LimitFMVQ(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
mvTmp[0].dx = (int16_t)mp4_Div2(mvCur[0].dx);
mvTmp[0].dy = (int16_t)(mp4_Div2(mvCur[0].dy << 1) >> 1);
mvTmp[2].dx = (int16_t)mp4_Div2(mvCur[2].dx);
mvTmp[2].dy = (int16_t)(mp4_Div2(mvCur[2].dy << 1) >> 1);
mp4_ComputeChromaMV(&mvTmp[0], &mvCbCrT);
mp4_ComputeChromaMV(&mvTmp[2], &mvCbCrB);
} else {
mp4_LimitFMV(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
mp4_LimitFMV(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvCur[0], &mvCbCrT);
mp4_ComputeChromaMV(&mvCur[2], &mvCbCrB);
}
}
} else {
ippiCalcGlobalMV_MPEG4(dx, dy, pMBinfo->mv, pInfo->VisualObject.VideoObject.WarpSpec);
pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
}
}
if (!obmc_disable) {
// OBMC for previous MB
if (colNum > 0)
if (pMBinfo[-1].type < IPPVC_MBTYPE_INTRA && !(pMBinfo[-1].field_info & 1)) // previous is marked as INTRA if it was mcsel
mp4_OBMC(pInfo, pMBinfo - 1, mvPrev, colNum - 1, rowNum, limitRectL, pYc - 16, stepYc, pYr - 16, stepYr, cbpyPrev, coeffMB, dct_typePrev);
if (mb_type < IPPVC_MBTYPE_INTRA && !field_prediction && !mcsel) {
cbpyPrev = cbpy;
dct_typePrev = dct_type;
mvPrev[0] = mvCur[0]; mvPrev[1] = mvCur[1]; mvPrev[2] = mvCur[2]; mvPrev[3] = mvCur[3];
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, (cbpy << 2) + cbpc, scan) != MP4_STATUS_OK)
goto Err_3;
mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
// OBMC current MB if it is the last in the row
if (colNum == mbPerRow - 1)
mp4_OBMC(pInfo, pMBinfo, mvPrev, colNum, rowNum, limitRectL, pYc, stepYc, pYr, stepYr, cbpyPrev, coeffMB, dct_typePrev);
}
}
if (mb_type < IPPVC_MBTYPE_INTRA && (obmc_disable || field_prediction || mcsel)) {
pat = mb_not_coded ? 0 : ((cbpy << 2) + cbpc);
if (pat)
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, pat, scan) != MP4_STATUS_OK)
goto Err_3;
if (!mcsel) {
if (quarter_sample) {
if (!field_prediction) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8QP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8QP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
mp4_Copy8x8QP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
} else {
mp4_Copy16x16QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
}
} else {
mp4_Copy16x8QP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
mp4_Copy16x8QP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
}
} else {
if (!field_prediction) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8HP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8HP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
mp4_Copy8x8HP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
} else {
mp4_Copy16x16HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
}
} else {
mp4_Copy16x8HP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
mp4_Copy16x8HP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
}
}
if (!dct_type) {
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpy & 8, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
} else {
mp4_Copy8x4HP_8u(pCbr+(mb_ftfr ? stepCbr : 0), stepCbr*2, pCbc, stepCbc*2, &mvCbCrT, rt);
mp4_Copy8x4HP_8u(pCrr+(mb_ftfr ? stepCrr : 0), stepCrr*2, pCrc, stepCrc*2, &mvCbCrT, rt);
mp4_Copy8x4HP_8u(pCbr+(mb_fbfr ? stepCbr : 0), stepCbr*2, pCbc+stepCbc, stepCbc*2, &mvCbCrB, rt);
mp4_Copy8x4HP_8u(pCrr+(mb_fbfr ? stepCrr : 0), stepCrr*2, pCrc+stepCrc, stepCrc*2, &mvCbCrB, rt);
mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
}
} else {
IppiRect mbRect;
mbRect.x = dx; mbRect.y = dy; mbRect.width = mbRect.height = 16;
ippiWarpLuma_MPEG4_8u_C1R(pInfo->VisualObject.rFrame->pY, stepYr, pYc, stepYc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
mbRect.x >>= 1; mbRect.y >>= 1; mbRect.width = mbRect.height = 8;
ippiWarpChroma_MPEG4_8u_P2R(pInfo->VisualObject.rFrame->pCb, stepCbr, pInfo->VisualObject.rFrame->pCr, stepCrr, pCbc, stepCbc, pCrc, stepCrc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
if (pat) {
if (!dct_type) {
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpy & 8, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
}
}
}
pMBinfo ++;
mvField += 2;
mbInVideoPacket ++;
colNum ++;
if (colNum == mbPerRow) {
colNum = 0;
rowNum ++;
if (rowNum == mbPerCol) {
// skip stuffing
while (mp4_ShowBits(pInfo, 10) == 1)
mp4_FlushBits(pInfo, 10);
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;
pYr += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYr << 4) - stepYr;
pCbr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbr << 3) - stepCbr;
pCrr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrr << 3) - stepCrr;
} else {
pYc += 16; pCrc += 8; pCbc += 8;
pYr += 16; pCrr += 8; pCbr += 8;
}
}
if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
int32_t found;
ErrRet_3:
if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK) {
if (found) {
mbInVideoPacket = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num - mbCurr;
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;
pYr = pInfo->VisualObject.rFrame->pY + (rowNum * stepYr + colNum) * 16; pCbr = pInfo->VisualObject.rFrame->pCb + (rowNum * stepCbr + colNum) * 8; pCrr = pInfo->VisualObject.rFrame->pCr + (rowNum * stepCrr + colNum) * 8;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
mvField = pInfo->VisualObject.VideoObject.FieldMV + 2 * mbCurr;
break;
}
} else
goto Err_3;
}
}
// mark MBs the previous videopacket as invalid for prediction
for (i = 1; i <= IPP_MIN(mbInVideoPacket, mbPerRow + 1); i ++) {
pMBinfo[-i].validPred = 0;
}
}
Err_3:
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_3;
}
}
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