PV_STATUS EncodeVop_NoME(VideoEncData *video) { Vop *currVop = video->currVop; Vol *currVol = video->vol[video->currLayer]; BitstreamEncVideo *stream = video->bitstream1; Int time = 0; /* follows EncodeVop value */ PV_STATUS status = PV_SUCCESS; if (currVol->shortVideoHeader) /* Short Video Header = 1 */ { status = EncodeShortHeader(stream, currVop); /* Encode Short Header */ video->header_bits = BitstreamGetPos(stream); /* Header Bits */ status = EncodeFrameCombinedMode(video); } #ifndef H263_ONLY else /* Short Video Header = 0 */ { if (currVol->GOVStart) status = EncodeGOVHeader(stream, time); /* Encode GOV Header */ status = EncodeVOPHeader(stream, currVol, currVop); /* Encode VOP Header */ video->header_bits = BitstreamGetPos(stream); /* Header Bits */ if (currVop->vopCoded) { if (!currVol->scalability) { if (currVol->dataPartitioning) { status = EncodeFrameDataPartMode(video); /* Encode Data Partitioning Mode VOP */ } else { status = EncodeFrameCombinedMode(video); /* Encode Combined Mode VOP */ } } else status = EncodeFrameCombinedMode(video); /* Encode Combined Mode VOP */ } else /* Vop Not coded */ { return status; } } #endif /* H263_ONLY */ return status; }
/* ======================================================================== */ PV_STATUS EncodeFrameCombinedMode(VideoEncData *video) { PV_STATUS status = PV_SUCCESS; Vol *currVol = video->vol[video->currLayer]; Vop *currVop = video->currVop; VideoEncParams *encParams = video->encParams; Int width = currVop->width; /* has to be Vop, for multiple of 16 */ Int lx = currVop->pitch; /* with padding */ Int offset = 0; Int ind_x, ind_y; Int start_packet_header = 0; UChar *QPMB = video->QPMB; Int QP; Int mbnum = 0, slice_counter = 0, curr_slice_counter = 0; Int num_bits, packet_size = encParams->ResyncPacketsize; Int GOB_Header_Interval = encParams->GOB_Header_Interval; BitstreamEncVideo *bs1 = video->bitstream1; Int numHeaderBits; approxDCT fastDCTfunction; Int ncoefblck[6] = {64, 64, 64, 64, 64, 64}; /* for FastCodeMB, 5/18/2001 */ PV_STATUS(*CodeMB)(VideoEncData *, approxDCT *, Int, Int[]); void (*MBVlcEncode)(VideoEncData*, Int[], void *); void (*BlockCodeCoeff)(RunLevelBlock*, BitstreamEncVideo*, Int, Int, UChar); /* for H263 GOB changes */ //MP4RateControlType rc_type = encParams->RC_Type; video->QP_prev = currVop->quantizer; numHeaderBits = BitstreamGetPos(bs1); /* determine type of quantization */ #ifndef NO_MPEG_QUANT if (currVol->quantType == 0) CodeMB = &CodeMB_H263; else CodeMB = &CodeMB_MPEG; #else CodeMB = &CodeMB_H263; #endif /* determine which functions to be used, in MB-level */ if (currVop->predictionType == P_VOP) MBVlcEncode = &MBVlcEncodeCombined_P_VOP; else if (currVop->predictionType == I_VOP) MBVlcEncode = &MBVlcEncodeCombined_I_VOP; else /* B_VOP not implemented yet */ return PV_FAIL; /* determine which VLC table to be used */ #ifndef H263_ONLY if (currVol->shortVideoHeader) BlockCodeCoeff = &BlockCodeCoeff_ShortHeader; #ifndef NO_RVLC else if (currVol->useReverseVLC) BlockCodeCoeff = &BlockCodeCoeff_RVLC; #endif else BlockCodeCoeff = &BlockCodeCoeff_Normal; #else BlockCodeCoeff = &BlockCodeCoeff_ShortHeader; #endif /* gob_frame_id is the same for different vop types - the reason should be SCD */ if (currVol->shortVideoHeader && currVop->gobFrameID != currVop->predictionType) currVop->gobFrameID = currVop->predictionType; video->usePrevQP = 0; for (ind_y = 0; ind_y < currVol->nMBPerCol; ind_y++) /* Col MB Loop */ { video->outputMB->mb_y = ind_y; /* 5/28/01 */ if (currVol->shortVideoHeader) /* ShortVideoHeader Mode */ { if (slice_counter && GOB_Header_Interval && (ind_y % GOB_Header_Interval == 0)) /* Encode GOB Header */ { QP = QPMB[mbnum]; /* Get quant_scale */ video->header_bits -= BitstreamGetPos(currVol->stream); /* Header Bits */ status = EncodeGOBHeader(video, slice_counter, QP, 0); //ind_y /* Encode GOB Header */ video->header_bits += BitstreamGetPos(currVol->stream); /* Header Bits */ curr_slice_counter = slice_counter; } } for (ind_x = 0; ind_x < currVol->nMBPerRow; ind_x++) /* Row MB Loop */ { video->outputMB->mb_x = ind_x; /* 5/28/01 */ video->mbnum = mbnum; QP = QPMB[mbnum]; /* always read new QP */ if (GOB_Header_Interval) video->sliceNo[mbnum] = curr_slice_counter; /* Update MB slice number */ else video->sliceNo[mbnum] = slice_counter; /****************************************************************************************/ /* MB Prediction:Put into MC macroblock, substract from currVop, put in predMB */ /****************************************************************************************/ getMotionCompensatedMB(video, ind_x, ind_y, offset); #ifndef H263_ONLY if (start_packet_header) { slice_counter++; /* Increment slice counter */ video->sliceNo[mbnum] = slice_counter; /* Update MB slice number*/ video->header_bits -= BitstreamGetPos(bs1); /* Header Bits */ video->QP_prev = currVop->quantizer; status = EncodeVideoPacketHeader(video, mbnum, video->QP_prev, 0); video->header_bits += BitstreamGetPos(bs1); /* Header Bits */ numHeaderBits = BitstreamGetPos(bs1); start_packet_header = 0; video->usePrevQP = 0; } #endif /***********************************************/ /* Code_MB: DCT, Q, Q^(-1), IDCT, Motion Comp */ /***********************************************/ status = (*CodeMB)(video, &fastDCTfunction, (offset << 5) + QP, ncoefblck); /************************************/ /* MB VLC Encode: VLC Encode MB */ /************************************/ (*MBVlcEncode)(video, ncoefblck, (void*)BlockCodeCoeff); /*************************************************************/ /* Assemble Packets: Assemble the MB VLC codes into Packets */ /*************************************************************/ /* Assemble_Packet(video) */ #ifndef H263_ONLY if (!currVol->shortVideoHeader) /* Not in ShortVideoHeader mode */ { if (!currVol->ResyncMarkerDisable) /* RESYNC MARKER MODE */ { num_bits = BitstreamGetPos(bs1) - numHeaderBits; if (num_bits > packet_size) { video->header_bits += BitstreamMpeg4ByteAlignStuffing(bs1); /* Byte align Packet */ status = BitstreamAppendPacket(currVol->stream, bs1); /* Put Packet to Buffer */ /* continue even if status == PV_END_OF_BUF, to get the stats */ BitstreamEncReset(bs1); start_packet_header = 1; } } else /* NO RESYNC MARKER MODE */ { status = BitstreamAppendEnc(currVol->stream, bs1); /* Initialize to 0 */ /* continue even if status == PV_END_OF_BUF, to get the stats */ BitstreamEncReset(bs1); } } else #endif /* H263_ONLY */ { /* ShortVideoHeader Mode */ status = BitstreamAppendEnc(currVol->stream, bs1); /* Initialize to 0 */ /* continue even if status == PV_END_OF_BUF, to get the stats */ BitstreamEncReset(bs1); } mbnum++; offset += 16; } /* End of For ind_x */ offset += (lx << 4) - width; if (currVol->shortVideoHeader) /* ShortVideoHeader = 1 */ { if (GOB_Header_Interval) slice_counter++; } } /* End of For ind_y */ if (currVol->shortVideoHeader) /* ShortVideoHeader = 1 */ { video->header_bits += BitstreamShortHeaderByteAlignStuffing(currVol->stream); /* Byte Align */ } #ifndef H263_ONLY else /* Combined Mode*/ { if (!currVol->ResyncMarkerDisable) /* Resync Markers */ { if (!start_packet_header) { video->header_bits += BitstreamMpeg4ByteAlignStuffing(bs1);/* Byte Align */ status = BitstreamAppendPacket(currVol->stream, bs1); /* Put Packet to Buffer */ /* continue even if status == PV_END_OF_BUF, to get the stats */ BitstreamEncReset(bs1); } } else /* No Resync Markers */ { video->header_bits += BitstreamMpeg4ByteAlignStuffing(currVol->stream); /* Byte Align */ } } #endif /* H263_ONLY */ return status; /* if status == PV_END_OF_BUF, this frame will be pre-skipped */ }
/* ======================================================================== */ PV_STATUS EncodeSliceCombinedMode(VideoEncData *video) { PV_STATUS status = PV_SUCCESS; Vol *currVol = video->vol[video->currLayer]; Vop *currVop = video->currVop; UChar mode = MODE_INTRA; UChar *Mode = video->headerInfo.Mode; VideoEncParams *encParams = video->encParams; Int nTotalMB = currVol->nTotalMB; Int width = currVop->width; /* has to be Vop, for multiple of 16 */ Int lx = currVop->pitch; /* , with padding */ // rateControl *rc = encParams->rc[video->currLayer]; UChar *QPMB = video->QPMB; Int QP; Int ind_x = video->outputMB->mb_x, ind_y = video->outputMB->mb_y; Int offset = video->offset; /* get current MB location */ Int mbnum = video->mbnum, slice_counter = video->sliceNo[mbnum]; /* get current MB location */ Int firstMB = mbnum; Int start_packet_header = 0; Int num_bits = 0; Int packet_size = encParams->ResyncPacketsize - 1; Int resync_marker = ((!currVol->shortVideoHeader) && (!currVol->ResyncMarkerDisable)); BitstreamEncVideo *bs1 = video->bitstream1; Int byteCount = 0, byteCount1 = 0, bitCount = 0; Int numHeaderBits = 0; approxDCT fastDCTfunction; Int ncoefblck[6] = {64, 64, 64, 64, 64, 64}; /* for FastCodeMB, 5/18/2001 */ UChar CBP = 0; Short outputMB[6][64]; Int k; PV_STATUS(*CodeMB)(VideoEncData *, approxDCT *, Int, Int[]); void (*MBVlcEncode)(VideoEncData*, Int[], void *); void (*BlockCodeCoeff)(RunLevelBlock*, BitstreamEncVideo*, Int, Int, UChar); video->QP_prev = 31; #define H263_GOB_CHANGES if (video->end_of_buf) /* left-over from previous run */ { status = BitstreamAppendPacketNoOffset(currVol->stream, bs1); if (status != PV_END_OF_BUF) { BitstreamEncReset(bs1); video->end_of_buf = 0; } return status; } if (mbnum == 0) /* only do this at the start of a frame */ { QPMB[0] = video->QP_prev = QP = currVop->quantizer; video->usePrevQP = 0; numHeaderBits = BitstreamGetPos(bs1); } /* Re-assign fast functions on every slice, don't have to put it in the memory */ QP = QPMB[mbnum]; if (mbnum > 0) video->QP_prev = QPMB[mbnum-1]; /* determine type of quantization */ #ifndef NO_MPEG_QUANT if (currVol->quantType == 0) CodeMB = &CodeMB_H263; else CodeMB = &CodeMB_MPEG; #else CodeMB = &CodeMB_H263; #endif /* determine which functions to be used, in MB-level */ if (currVop->predictionType == P_VOP) MBVlcEncode = &MBVlcEncodeCombined_P_VOP; else if (currVop->predictionType == I_VOP) MBVlcEncode = &MBVlcEncodeCombined_I_VOP; else /* B_VOP not implemented yet */ return PV_FAIL; /* determine which VLC table to be used */ #ifndef H263_ONLY if (currVol->shortVideoHeader) BlockCodeCoeff = &BlockCodeCoeff_ShortHeader; #ifndef NO_RVLC else if (currVol->useReverseVLC) BlockCodeCoeff = &BlockCodeCoeff_RVLC; #endif else BlockCodeCoeff = &BlockCodeCoeff_Normal; #else BlockCodeCoeff = &BlockCodeCoeff_ShortHeader; #endif /* (gob_frame_id is the same for different vop types) The reason should be SCD */ if (currVol->shortVideoHeader && currVop->gobFrameID != currVop->predictionType) currVop->gobFrameID = currVop->predictionType; if (mbnum != 0) { if (currVol->shortVideoHeader) { /* Encode GOB Header */ bitCount = BitstreamGetPos(bs1); byteCount1 = byteCount = bitCount >> 3; /* save the position before GOB header */ bitCount = bitCount & 0x7; #ifdef H263_GOB_CHANGES video->header_bits -= BitstreamGetPos(bs1); /* Header Bits */ status = EncodeGOBHeader(video, slice_counter, QP, 1); //ind_y /* Encode GOB Header */ video->header_bits += BitstreamGetPos(bs1); /* Header Bits */ #endif goto JUMP_IN_SH; } else if (currVol->ResyncMarkerDisable)
PV_STATUS EncodeSlice(VideoEncData *video) { Vop *currVop = video->currVop; Int currLayer = video->currLayer; Vol *currVol = video->vol[currLayer]; BitstreamEncVideo *stream = video->bitstream1; /* different from frame-based */ Int time = 0; /* follows EncodeVop value */ PV_STATUS status = PV_SUCCESS; rateControl **rc = video->rc; if (currVol->shortVideoHeader) /* Short Video Header = 1 */ { if (video->mbnum == 0) { status = EncodeShortHeader(stream, currVop); /* Encode Short Header */ video->header_bits = BitstreamGetPos(stream); /* Header Bits */ } status = EncodeSliceCombinedMode(video); } #ifndef H263_ONLY else /* Short Video Header = 0 */ { if (video->mbnum == 0) { if (currVol->GOVStart) status = EncodeGOVHeader(stream, time); /* Encode GOV Header */ status = EncodeVOPHeader(stream, currVol, currVop); /* Encode VOP Header */ video->header_bits = BitstreamGetPos(stream); /* Header Bits */ } if (currVop->vopCoded) { if (!currVol->scalability) { if (currVol->dataPartitioning) { status = EncodeSliceDataPartMode(video); /* Encode Data Partitioning Mode VOP */ } else { status = EncodeSliceCombinedMode(video); /* Encode Combined Mode VOP */ } } else status = EncodeSliceCombinedMode(video); /* Encode Combined Mode VOP */ } else /* Vop Not coded */ { return status; } } #endif /* H263_ONLY */ if (video->mbnum >= currVol->nTotalMB && status != PV_END_OF_BUF) /* end of Vop */ { /******************************/ /* rate control (update stat) */ /* 6/2/01 separate function */ /******************************/ status = RC_VopUpdateStat(video, rc[currLayer]); } return status; }