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https://github.com/WinampDesktop/winamp.git
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409 lines
18 KiB
C
409 lines
18 KiB
C
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/* ///////////////////////////////////////////////////////////////////////
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//
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// INTEL CORPORATION PROPRIETARY INFORMATION
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// This software is supplied under the terms of a license agreement or
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// nondisclosure agreement with Intel Corporation and may not be copied
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// or disclosed except in accordance with the terms of that agreement.
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// Copyright (c) 2001-2007 Intel Corporation. All Rights Reserved.
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//
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// Description: Decodes I-VOPs
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//
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*/
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#include "mp4def.h"
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#include "mp4dec.h"
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/*
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// decode mcbpc and set MBtype and ChromaPattern
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*/
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/*static*/ mp4_Status mp4_DecodeMCBPC_I(mp4_Info* pInfo, int32_t *mbType, int32_t *mbPattern)
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{
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uint32_t code;
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int32_t type, pattern, fb;
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code = mp4_ShowBits9(pInfo, 9);
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if (code == 1) {
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type = IPPVC_MB_STUFFING;
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pattern = 0;
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fb = 9;
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} else if (code >= 64) {
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type = IPPVC_MBTYPE_INTRA;
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pattern = code >> 6;
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if (pattern >= 4) {
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pattern = 0;
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fb = 1;
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} else
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fb = 3;
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} else {
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type = IPPVC_MBTYPE_INTRA_Q;
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pattern = code >> 3;
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if (pattern >= 4) {
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pattern = 0;
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fb = 4;
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} else if (code >= 8) {
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fb = 6;
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} else {
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mp4_Error("Error: decoding MCBPC");
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return MP4_STATUS_ERROR;
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}
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}
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mp4_FlushBits(pInfo, fb);
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*mbType = type;
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*mbPattern = pattern;
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if (type == IPPVC_MBTYPE_INTRA)
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mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_INTRA);
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else if (type == IPPVC_MBTYPE_INTRA_Q)
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mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_INTRA_Q);
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return MP4_STATUS_OK;
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}
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/*
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// decode IVOP
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*/
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mp4_Status mp4_DecodeVOP_I(mp4_Info* pInfo)
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{
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int32_t quant, quantPred, dcVLC, mb_type, cbpc, cbpy, ac_pred_flag;
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int32_t i, j, nmb, nmbgob, stepYc, stepCbc, stepCrc, stepFc[6], mbCurr, mbInVideoPacket, colNum, rowNum, mbPerRow, mbPerCol;
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uint8_t *pFc[6];
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mp4_Status sts;
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if (pInfo->VisualObject.cFrame)
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{
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DebugBreak();
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}
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pInfo->VisualObject.cFrame = CreateFrame(&pInfo->VisualObject);
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stepYc = pInfo->VisualObject.cFrame->stepY;
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stepCbc = pInfo->VisualObject.cFrame->stepCb;
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stepCrc = pInfo->VisualObject.cFrame->stepCr;
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mbPerRow = pInfo->VisualObject.VideoObject.MacroBlockPerRow;
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mbPerCol = pInfo->VisualObject.VideoObject.MacroBlockPerCol;
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stepFc[0] = stepFc[1] = stepFc[2] = stepFc[3] = stepYc; stepFc[4] = stepCbc; stepFc[5] = stepCrc;
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pFc[0] = pInfo->VisualObject.cFrame->pY; pFc[1] = pInfo->VisualObject.cFrame->pY + 8;
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pFc[2] = pInfo->VisualObject.cFrame->pY + 8 * stepYc; pFc[3] = pInfo->VisualObject.cFrame->pY + 8 * stepYc + 8;
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pFc[4] = pInfo->VisualObject.cFrame->pCb; pFc[5] = pInfo->VisualObject.cFrame->pCr;
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nmb = pInfo->VisualObject.VideoObject.MacroBlockPerVOP;
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mbCurr = colNum = rowNum = 0;
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sts = MP4_STATUS_OK;
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// decode short_video_header I-VOP
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if (pInfo->VisualObject.VideoObject.short_video_header)
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{
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quant = pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.vop_quant;
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nmbgob = 0;
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pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.gob_number = 0;
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for (;;)
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{
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do
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{
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if (mp4_DecodeMCBPC_I(pInfo, &mb_type, &cbpc) != MP4_STATUS_OK)
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goto Err_1;
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} while (mb_type == IPPVC_MB_STUFFING);
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if (mp4_DecodeCBPY_I(pInfo, &cbpy) != MP4_STATUS_OK)
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goto Err_1;
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if (mb_type == IPPVC_MBTYPE_INTRA_Q)
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mp4_UpdateQuant(pInfo, quant);
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if (mp4_DecodeIntraMB_SVH(pInfo, (cbpy << 2) + cbpc, quant, pFc, stepFc) != MP4_STATUS_OK)
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goto Err_1;
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colNum ++;
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if (colNum == mbPerRow) {
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colNum = 0;
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rowNum ++;
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if (rowNum == mbPerCol)
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break;
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pFc[0] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[1] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[2] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[3] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[4] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
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pFc[5] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
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}
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else
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{
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pFc[0] += 16; pFc[1] += 16; pFc[2] += 16; pFc[3] += 16; pFc[4] += 8; pFc[5] += 8;
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}
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nmbgob ++;
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if (nmbgob == pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.num_macroblocks_in_gob && pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.gob_number < (pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.num_gobs_in_vop - 1)) {
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ErrRet_1:
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if (mp4_CheckDecodeGOB_SVH(pInfo) != MP4_STATUS_OK)
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goto Err_1;
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if (!pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.gob_header_empty)
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{
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quant = pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.quant_scale;
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i = pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.gob_number * pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.num_rows_in_gob;
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mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, (i - rowNum) * mbPerRow - colNum);
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rowNum = i;
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colNum = 0;
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pFc[0] = pInfo->VisualObject.cFrame->pY + i * stepYc * 16; pFc[1] = pFc[0] + 8; pFc[2] = pFc[0] + 8 * stepYc; pFc[3] = pFc[2] + 8;
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pFc[4] = pInfo->VisualObject.cFrame->pCb + i * stepCbc * 8; pFc[5] = pInfo->VisualObject.cFrame->pCr + i * stepCrc * 8;
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}
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nmbgob = 0;
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}
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}
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mp4_AlignBits(pInfo);
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return sts;
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Err_1:
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sts = MP4_STATUS_ERROR;
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if (pInfo->stopOnErr)
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return sts;
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if (!mp4_SeekGOBMarker(pInfo))
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{
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mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, pInfo->VisualObject.VideoObject.MacroBlockPerVOP - rowNum * mbPerRow - colNum);
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return sts;
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}
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goto ErrRet_1;
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}
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quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant;
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if (pInfo->VisualObject.VideoObject.sprite_enable != MP4_SPRITE_STATIC)
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ippsZero_8u((uint8_t*)pInfo->VisualObject.VideoObject.MBinfo, nmb * sizeof(mp4_MacroBlock));
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// decode data_partitioned I-VOP
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if (pInfo->VisualObject.VideoObject.data_partitioned)
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{
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mp4_DataPartMacroBlock *pMBdp;
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for (;;)
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{
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// reset Intra prediction buffer on new Video_packet
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mp4_ResetIntraPredBuffer(pInfo);
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mbInVideoPacket = 0;
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pMBdp = &pInfo->VisualObject.VideoObject.DataPartBuff[mbCurr];
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// decode mb_type/cbpc/dquant/DC part
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for (;;)
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{
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if (mp4_DecodeMCBPC_I(pInfo, &mb_type, &cbpc) != MP4_STATUS_OK)
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goto Err_2;
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if (mb_type != IPPVC_MB_STUFFING)
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{
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if (mbInVideoPacket == nmb - mbCurr)
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{
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mp4_Error("DC Marker missed");
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goto Err_2;
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}
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quantPred = quant;
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if (mb_type == IPPVC_MBTYPE_INTRA_Q)
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mp4_UpdateQuant(pInfo, quant);
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if (mbInVideoPacket == 0)
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quantPred = quant;
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dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
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if (dcVLC) {
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for (i = 0; i < 6; i ++) {
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if (ippiDecodeDCIntra_MPEG4_1u16s(&pInfo->bufptr, &pInfo->bitoff, &pMBdp->dct_dc[i], (i < 4) ? IPPVC_BLOCK_LUMA : IPPVC_BLOCK_CHROMA) != ippStsNoErr)
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goto Err_2;
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}
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}
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pMBdp->quant = (uint8_t)quant;
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pMBdp->type = (uint8_t)mb_type;
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pMBdp->pat = (uint8_t)cbpc;
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pMBdp ++;
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mbInVideoPacket ++;
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}
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if (mp4_ShowBits(pInfo, 19) == MP4_DC_MARKER)
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{
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mp4_GetBits(pInfo, 19);
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break;
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}
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}
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pMBdp = &pInfo->VisualObject.VideoObject.DataPartBuff[mbCurr];
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// decode ac_pred_flag/cbpy part
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for (i = 0; i < mbInVideoPacket; i ++)
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{
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pMBdp[i].ac_pred_flag = (uint8_t)mp4_GetBit(pInfo);
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if (mp4_DecodeCBPY_I(pInfo, &cbpy) != MP4_STATUS_OK)
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{
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if (pInfo->stopOnErr)
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goto Err_2;
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for (j = i + 1; j < mbInVideoPacket; j ++)
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pMBdp[j].ac_pred_flag = 1;
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break;
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}
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pMBdp[i].pat = (uint8_t)((cbpy << 2) + pMBdp[i].pat);
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}
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// decode AC part and reconstruct macroblocks
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for (i = 0; i < mbInVideoPacket; i ++) {
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if (colNum == 0) {
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// reset B-prediction blocks on new row
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mp4_ResetIntraPredBblock(pInfo);
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}
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quant = pMBdp[i].quant;
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quantPred = (i == 0) ? quant : pMBdp[i-1].quant;
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dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
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ac_pred_flag = pMBdp[i].ac_pred_flag;
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if (mp4_DecodeIntraMB_DP(pInfo, pMBdp[i].dct_dc, colNum, pMBdp[i].pat, quant, dcVLC, ac_pred_flag, pFc, stepFc) != MP4_STATUS_OK)
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//if (!pInfo->VisualObject.VideoObject.reversible_vlc)
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goto Err_2;
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//else
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// goto Err_RVLC;
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colNum ++;
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if (colNum == mbPerRow)
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{
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colNum = 0;
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rowNum ++;
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if (rowNum == mbPerCol)
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return sts;
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pFc[0] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[1] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[2] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[3] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
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pFc[4] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
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pFc[5] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
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}
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else
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{
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pFc[0] += 16; pFc[1] += 16; pFc[2] += 16; pFc[3] += 16; pFc[4] += 8; pFc[5] += 8;
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}
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}
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mbCurr += mbInVideoPacket;
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if (!pInfo->VisualObject.VideoObject.resync_marker_disable)
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{
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int32_t found;
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ErrRet_2:
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if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK)
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{
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if (found)
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{
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quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant_scale;
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mbCurr = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num;
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mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, mbCurr - rowNum * mbPerRow - colNum);
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rowNum = mbCurr / mbPerRow;
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colNum = mbCurr % mbPerRow;
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pFc[0] = pInfo->VisualObject.cFrame->pY + (rowNum * stepYc + colNum) * 16; pFc[1] = pFc[0] + 8; pFc[2] = pFc[0] + stepYc * 8; pFc[3] = pFc[2] + 8;
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pFc[4] = pInfo->VisualObject.cFrame->pCb + (rowNum * stepCbc + colNum) * 8; pFc[5] = pInfo->VisualObject.cFrame->pCr + (rowNum * stepCrc + colNum) * 8;
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}
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else
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goto Err_2;
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}
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else
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goto Err_2;
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}
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}
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Err_2:
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sts = MP4_STATUS_ERROR;
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if (pInfo->stopOnErr)
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return sts;
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if (pInfo->VisualObject.VideoObject.resync_marker_disable || !mp4_SeekResyncMarker(pInfo))
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{
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mp4_CopyMacroBlocks(pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, pInfo->VisualObject.VideoObject.MacroBlockPerVOP - rowNum * mbPerRow - colNum);
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return sts;
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}
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goto ErrRet_2;
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#if 0
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Err_RVLC:
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{
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uint8_t *sBufptr = pInfo->bufptr;
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int32_t sBitoff = pInfo->bitoff;
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pInfo->bitoff --;
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if (pInfo->bitoff == -1) {
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pInfo->bitoff = 7;
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pInfo->bufptr --;
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}
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// decode AC part and reconstruct macroblocks
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for (j = mbInVideoPacket - 1; j >= i; j --) {
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int32_t lnz, quantPred, dcVLC;
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|
|
quantPred = ((j == 0) ? pMBdp[j].quant : pMBdp[j-1].quant);
|
||
|
|
dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
|
||
|
|
if (ippiDecodeCoeffsIntraRVLCBack_MPEG4_1u16s(&pInfo->bufptr, &pInfo->bitoff, pDCTdp[j*64*6], &lnz, dcVLC) != ippStsNoErr)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
pInfo->bufptr = sBufptr;
|
||
|
|
pInfo->bitoff = sBitoff;
|
||
|
|
}
|
||
|
|
goto ErrRet_2;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
// decode not data partitioned I-VOP
|
||
|
|
else {
|
||
|
|
int32_t stepY = stepYc, dct_type = 0, pYoff23 = 8 * stepYc;
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
if (mp4_DecodeMCBPC_I(pInfo, &mb_type, &cbpc) != MP4_STATUS_OK)
|
||
|
|
goto Err_3;
|
||
|
|
if (mb_type != IPPVC_MB_STUFFING) {
|
||
|
|
ac_pred_flag = mp4_GetBit(pInfo);
|
||
|
|
if (mp4_DecodeCBPY_I(pInfo, &cbpy) != MP4_STATUS_OK)
|
||
|
|
goto Err_3;
|
||
|
|
quantPred = quant;
|
||
|
|
if (mb_type == IPPVC_MBTYPE_INTRA_Q)
|
||
|
|
mp4_UpdateQuant(pInfo, quant);
|
||
|
|
if (mbInVideoPacket == 0)
|
||
|
|
quantPred = quant;
|
||
|
|
dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
|
||
|
|
if (pInfo->VisualObject.VideoObject.interlaced) {
|
||
|
|
dct_type = mp4_GetBit(pInfo);
|
||
|
|
if (dct_type) {
|
||
|
|
stepY = stepYc * 2;
|
||
|
|
pYoff23 = stepYc;
|
||
|
|
} else {
|
||
|
|
stepY = stepYc;
|
||
|
|
pYoff23 = 8 * stepYc;
|
||
|
|
}
|
||
|
|
stepFc[0] = stepFc[1] = stepFc[2] = stepFc[3] = stepY;
|
||
|
|
}
|
||
|
|
pFc[2] = pFc[0] + pYoff23; pFc[3] = pFc[1] + pYoff23;
|
||
|
|
if (mp4_DecodeIntraMB(pInfo, colNum, (cbpy << 2) + cbpc, quant, dcVLC, ac_pred_flag, pFc, stepFc) != MP4_STATUS_OK)
|
||
|
|
goto Err_3;
|
||
|
|
mbInVideoPacket ++;
|
||
|
|
colNum ++;
|
||
|
|
if (colNum == mbPerRow) {
|
||
|
|
colNum = 0;
|
||
|
|
rowNum ++;
|
||
|
|
if (rowNum == mbPerCol) {
|
||
|
|
// skip stuffing
|
||
|
|
while (mp4_ShowBits9(pInfo, 9) == 1)
|
||
|
|
mp4_FlushBits(pInfo, 9);
|
||
|
|
return sts;
|
||
|
|
}
|
||
|
|
pFc[0] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
|
||
|
|
pFc[1] += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
|
||
|
|
pFc[4] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
|
||
|
|
pFc[5] += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
|
||
|
|
} else {
|
||
|
|
pFc[0] += 16; pFc[1] += 16; pFc[4] += 8; pFc[5] += 8;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!pInfo->VisualObject.VideoObject.resync_marker_disable)
|
||
|
|
{
|
||
|
|
int32_t found;
|
||
|
|
ErrRet_3:
|
||
|
|
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;
|
||
|
|
pFc[0] = pInfo->VisualObject.cFrame->pY + (rowNum * stepYc + colNum) * 16; pFc[1] = pFc[0] + 8;
|
||
|
|
pFc[4] = pInfo->VisualObject.cFrame->pCb + (rowNum * stepCbc + colNum) * 8; pFc[5] = pInfo->VisualObject.cFrame->pCr + (rowNum * stepCrc + colNum) * 8;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
goto Err_3;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|