PV_STATUS EncodeVopNotCoded(VideoEncData *video, UChar *bstream, Int *size, ULong modTime)
{
PV_STATUS status;
Vol *currVol = video->vol[0];
Vop *currVop = video->currVop;
BitstreamEncVideo *stream = currVol->stream;
UInt frameTick;
Int timeInc;
stream->bitstreamBuffer = bstream;
stream->bufferSize = *size;
BitstreamEncReset(stream);
status = BitstreamPutGT16Bits(stream, 32, VOP_START_CODE); /*Start Code for VOP*/
status = BitstreamPutBits(stream, 2, P_VOP);/* VOP Coding Type*/
modTime += video->wrapModTime; /* wrapModTime is non zero after wrap-around */
frameTick = (Int)(((double)(modTime - video->modTimeRef) * currVol->timeIncrementResolution + 500) / 1000);
timeInc = frameTick - video->refTick[0];
while (timeInc >= currVol->timeIncrementResolution)
{
timeInc -= currVol->timeIncrementResolution;
status = BitstreamPut1Bits(stream, 1);
/* do not update refTick and modTimeRef yet, do it after encoding!! */
}
status = BitstreamPut1Bits(stream, 0);
status = BitstreamPut1Bits(stream, 1); /* marker bit */
status = BitstreamPutBits(stream, currVol->nbitsTimeIncRes, timeInc); /* vop_time_increment */
status = BitstreamPut1Bits(stream, 1); /* marker bit */
status = BitstreamPut1Bits(stream, 0); /* vop_coded bit */
BitstreamMpeg4ByteAlignStuffing(stream);
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 EncodeVideoPacketHeader(VideoEncData *video, int MB_number,
int quant_scale, Int insert)
{
// PV_STATUS status=PV_SUCCESS;
int fcode;
Vop *currVop = video->currVop;
Vol *currVol = video->vol[video->currLayer];
BitstreamEncVideo *bs, tmp;
UChar buffer[30];
if (insert) /* insert packet header to the beginning of bs1 */
{
tmp.bitstreamBuffer = buffer; /* use temporary buffer */
tmp.bufferSize = 30;
BitstreamEncReset(&tmp);
bs = &tmp;
}
else
bs = video->bitstream1;
if (currVop->predictionType == I_VOP)
BitstreamPutGT16Bits(bs, 17, 1); /* resync_marker I_VOP */
else if (currVop->predictionType == P_VOP)
{
fcode = currVop->fcodeForward;
BitstreamPutGT16Bits(bs, 16 + fcode, 1); /* resync_marker P_VOP */
}
else
{
fcode = currVop->fcodeForward;
if (currVop->fcodeBackward > fcode)
fcode = currVop->fcodeBackward;
BitstreamPutGT16Bits(bs, 16 + fcode, 1); /* resync_marker B_VOP */
}
BitstreamPutBits(bs, currVol->nBitsForMBID, MB_number); /* resync_marker */
BitstreamPutBits(bs, 5, quant_scale); /* quant_scale */
BitstreamPut1Bits(bs, 0); /* header_extension_code = 0 */
if (0) /* header_extension_code = 1 */
{
/* NEED modulo_time_base code here ... default 0x01 belo*/
/*status =*/ BitstreamPut1Bits(bs, 1);
/*status = */
BitstreamPut1Bits(bs, 0);
/*status = */
BitstreamPut1Bits(bs, 1); /* marker bit */
/*status = */
BitstreamPutBits(bs, currVol->nbitsTimeIncRes, currVop->timeInc); /* vop_time_increment */
/*status = */
BitstreamPut1Bits(bs, 1); /* marker bit */
/*status = */
BitstreamPutBits(bs, 2, currVop->predictionType);/* VOP Coding Type*/
/*status = */
BitstreamPutBits(bs, 3, currVop->intraDCVlcThr); /* intra_dc_vlc_thr */
if (currVop->predictionType != I_VOP)
/*status = */ BitstreamPutBits(bs, 3, currVop->fcodeForward);
if (currVop->predictionType == B_VOP)
/*status = */ BitstreamPutBits(bs, 3, currVop->fcodeBackward);
}
#ifndef NO_SLICE_ENCODE
if (insert)
BitstreamPrependPacket(video->bitstream1, bs);
#endif
return PV_SUCCESS;
}
