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* * |
* * |
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* Revision history: * |
* Revision history: * |
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* * |
* * |
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* 01.05.2002 added BVOP support to BitstreamWriteVopHeader |
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* 15.04.2002 rewrite log2bin use asm386 By MinChen <chenm001@163.com> * |
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* 26.03.2002 interlacing support * |
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* 03.03.2002 qmatrix writing * |
* 03.03.2002 qmatrix writing * |
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* 03.03.2002 merged BITREADER and BITWRITER * |
* 03.03.2002 merged BITREADER and BITWRITER * |
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* 30.02.2002 intra_dc_threshold support * |
* 30.02.2002 intra_dc_threshold support * |
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#include "zigzag.h" |
#include "zigzag.h" |
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#include "../quant/quant_matrix.h" |
#include "../quant/quant_matrix.h" |
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61 |
static int __inline log2bin(int value) |
static int __inline log2bin(int value) |
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{ |
{ |
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/* Changed by Chenm001 */ |
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#ifndef WIN32 |
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int n = 0; |
int n = 0; |
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while (value) |
while (value) |
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{ |
{ |
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n++; |
n++; |
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} |
} |
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return n; |
return n; |
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#else |
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__asm{ |
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bsr eax,value |
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inc eax |
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} |
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#endif |
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} |
} |
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295 |
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296 |
} |
} |
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298 |
if (BitstreamGetBit(bs)) // interlaced |
if ((dec->interlacing = BitstreamGetBit(bs))) |
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{ |
{ |
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DEBUG("TODO: interlaced"); |
DEBUG("vol: interlacing"); |
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// TODO |
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return -1; |
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301 |
} |
} |
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if (!BitstreamGetBit(bs)) // obmc_disable |
if (!BitstreamGetBit(bs)) // obmc_disable |
527 |
// intra_dc_vlc_threshold |
// intra_dc_vlc_threshold |
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*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
*intra_dc_threshold = intra_dc_threshold_table[ BitstreamGetBits(bs,3) ]; |
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530 |
/* if (interlaced) |
if (dec->interlacing) |
531 |
{ |
{ |
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BitstreamSkip(bs, 1); // top_field_first |
if ((dec->top_field_first = BitstreamGetBit(bs))) |
533 |
BitstreamSkip(bs, 1); // alternative_vertical_scan_flag |
{ |
534 |
*/ |
DEBUG("vop: top_field_first"); |
535 |
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} |
536 |
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if ((dec->alternate_vertical_scan = BitstreamGetBit(bs))) |
537 |
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{ |
538 |
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DEBUG("vop: alternate_vertical_scan"); |
539 |
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} |
540 |
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} |
541 |
} |
} |
542 |
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543 |
*quant = BitstreamGetBits(bs, dec->quant_bits); // vop_quant |
*quant = BitstreamGetBits(bs, dec->quant_bits); // vop_quant |
600 |
write vol header |
write vol header |
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*/ |
*/ |
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void BitstreamWriteVolHeader(Bitstream * const bs, |
void BitstreamWriteVolHeader(Bitstream * const bs, |
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const int width, |
const MBParam * pParam, const FRAMEINFO * frame) |
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const int height, |
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const int quant_type) |
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{ |
{ |
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// video object_start_code & vo_id |
// video object_start_code & vo_id |
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BitstreamPad(bs); |
BitstreamPad(bs); |
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// BitstreamPutBits(bs, 0, 15); |
// BitstreamPutBits(bs, 0, 15); |
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638 |
WRITE_MARKER(); |
WRITE_MARKER(); |
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BitstreamPutBits(bs, width, 13); // width |
BitstreamPutBits(bs, pParam->width, 13); // width |
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WRITE_MARKER(); |
WRITE_MARKER(); |
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BitstreamPutBits(bs, height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); // height |
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WRITE_MARKER(); |
WRITE_MARKER(); |
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BitstreamPutBit(bs, 0); // interlace |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
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BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
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BitstreamPutBit(bs, 0); // sprite_enable |
BitstreamPutBit(bs, 0); // sprite_enable |
647 |
BitstreamPutBit(bs, 0); // not_in_bit |
BitstreamPutBit(bs, 0); // not_in_bit |
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// quant_type 0=h.263 1=mpeg4(quantizer tables) |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
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BitstreamPutBit(bs, quant_type); |
BitstreamPutBit(bs, pParam->m_quant_type); |
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if (quant_type) |
if (pParam->m_quant_type) |
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{ |
{ |
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BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
BitstreamPutBit(bs, get_intra_matrix_status()); // load_intra_quant_mat |
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if (get_intra_matrix_status()) |
if (get_intra_matrix_status()) |
681 |
(decoder uses these values to determine precise time since last resync) |
(decoder uses these values to determine precise time since last resync) |
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*/ |
*/ |
683 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void BitstreamWriteVopHeader(Bitstream * const bs, |
684 |
VOP_TYPE prediction_type, |
const MBParam * pParam, |
685 |
const int rounding_type, |
const FRAMEINFO * frame) |
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const uint32_t quant, |
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const uint32_t fcode) |
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686 |
{ |
{ |
687 |
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#ifdef BFRAMES |
688 |
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uint32_t i; |
689 |
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#endif |
690 |
BitstreamPad(bs); |
BitstreamPad(bs); |
691 |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
BitstreamPutBits(bs, VOP_START_CODE, 32); |
692 |
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693 |
BitstreamPutBits(bs, prediction_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
694 |
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// time_base = 0 write n x PutBit(1), PutBit(0) |
// time_base = 0 write n x PutBit(1), PutBit(0) |
696 |
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#ifdef BFRAMES |
697 |
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for (i = 0; i < frame->seconds; i++) |
698 |
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{ |
699 |
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BitstreamPutBit(bs, 1); |
700 |
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} |
701 |
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BitstreamPutBit(bs, 0); |
702 |
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#else |
703 |
BitstreamPutBits(bs, 0, 1); |
BitstreamPutBits(bs, 0, 1); |
704 |
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#endif |
705 |
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706 |
WRITE_MARKER(); |
WRITE_MARKER(); |
707 |
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708 |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
// time_increment: value=nth_of_sec, nbits = log2(resolution) |
709 |
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#ifdef BFRAMES |
710 |
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BitstreamPutBits(bs, frame->ticks, 5); |
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dprintf("[%i:%i] %c\n", frame->seconds, frame->ticks, frame->coding_type == I_VOP ? 'I' : frame->coding_type == P_VOP ? 'P' : 'B'); |
712 |
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#else |
713 |
BitstreamPutBits(bs, 1, 1); |
BitstreamPutBits(bs, 1, 1); |
714 |
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#endif |
715 |
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716 |
WRITE_MARKER(); |
WRITE_MARKER(); |
717 |
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718 |
BitstreamPutBits(bs, 1, 1); // vop_coded |
BitstreamPutBits(bs, 1, 1); // vop_coded |
719 |
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720 |
if (prediction_type != I_VOP) |
if (frame->coding_type != I_VOP) |
721 |
BitstreamPutBits(bs, rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
722 |
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723 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
724 |
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725 |
BitstreamPutBits(bs, quant, 5); // quantizer |
if (frame->global_flags & XVID_INTERLACING) |
726 |
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{ |
727 |
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BitstreamPutBit(bs, 1); // top field first |
728 |
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BitstreamPutBit(bs, 0); // alternate vertical scan |
729 |
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} |
730 |
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731 |
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BitstreamPutBits(bs, frame->quant, 5); // quantizer |
732 |
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733 |
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if (frame->coding_type != I_VOP) |
734 |
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BitstreamPutBits(bs, frame->fcode, 3); // forward_fixed_code |
735 |
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736 |
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if (frame->coding_type == B_VOP) |
737 |
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BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
738 |
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if (prediction_type != I_VOP) |
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BitstreamPutBits(bs, fcode, 3); // fixed_code = [1,4] |
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739 |
} |
} |