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* * |
* * |
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* Revision history: * |
* Revision history: * |
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* * |
* * |
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* 26.03.2002 interlacing support |
* 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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60 |
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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; |
66 |
while (value) |
while (value) |
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{ |
{ |
69 |
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 |
78 |
} |
} |
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|
80 |
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600 |
write vol header |
write vol header |
601 |
*/ |
*/ |
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void BitstreamWriteVolHeader(Bitstream * const bs, |
void BitstreamWriteVolHeader(Bitstream * const bs, |
603 |
const MBParam * pParam) |
const MBParam * pParam, const FRAMEINFO * frame) |
604 |
{ |
{ |
605 |
// video object_start_code & vo_id |
// video object_start_code & vo_id |
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BitstreamPad(bs); |
BitstreamPad(bs); |
641 |
BitstreamPutBits(bs, pParam->height, 13); // height |
BitstreamPutBits(bs, pParam->height, 13); // height |
642 |
WRITE_MARKER(); |
WRITE_MARKER(); |
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|
|
644 |
BitstreamPutBit(bs, pParam->global_flags & XVID_INTERLACING); // interlace |
BitstreamPutBit(bs, frame->global_flags & XVID_INTERLACING); // interlace |
645 |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
BitstreamPutBit(bs, 1); // obmc_disable (overlapped block motion compensation) |
646 |
BitstreamPutBit(bs, 0); // sprite_enable |
BitstreamPutBit(bs, 0); // sprite_enable |
647 |
BitstreamPutBit(bs, 0); // not_in_bit |
BitstreamPutBit(bs, 0); // not_in_bit |
648 |
|
|
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// quant_type 0=h.263 1=mpeg4(quantizer tables) |
// quant_type 0=h.263 1=mpeg4(quantizer tables) |
650 |
BitstreamPutBit(bs, pParam->quant_type); |
BitstreamPutBit(bs, pParam->m_quant_type); |
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|
|
652 |
if (pParam->quant_type) |
if (pParam->m_quant_type) |
653 |
{ |
{ |
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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) |
682 |
*/ |
*/ |
683 |
void BitstreamWriteVopHeader(Bitstream * const bs, |
void BitstreamWriteVopHeader(Bitstream * const bs, |
684 |
const MBParam * pParam) |
const MBParam * pParam, |
685 |
|
const FRAMEINFO * frame) |
686 |
{ |
{ |
687 |
|
#ifdef BFRAMES |
688 |
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uint32_t i; |
689 |
|
#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, pParam->coding_type, 2); |
BitstreamPutBits(bs, frame->coding_type, 2); |
694 |
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|
695 |
// 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(); |
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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); |
711 |
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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 |
|
#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 (pParam->coding_type != I_VOP) |
if (frame->coding_type != I_VOP) |
721 |
BitstreamPutBits(bs, pParam->rounding_type, 1); |
BitstreamPutBits(bs, frame->rounding_type, 1); |
722 |
|
|
723 |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
BitstreamPutBits(bs, 0, 3); // intra_dc_vlc_threshold |
724 |
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|
725 |
if (pParam->global_flags & XVID_INTERLACING) |
if (frame->global_flags & XVID_INTERLACING) |
726 |
{ |
{ |
727 |
BitstreamPutBit(bs, 1); // top field first |
BitstreamPutBit(bs, 1); // top field first |
728 |
BitstreamPutBit(bs, 0); // alternate vertical scan |
BitstreamPutBit(bs, 0); // alternate vertical scan |
729 |
} |
} |
730 |
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|
731 |
BitstreamPutBits(bs, pParam->quant, 5); // quantizer |
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) |
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BitstreamPutBits(bs, frame->bcode, 3); // backward_fixed_code |
738 |
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if (pParam->coding_type != I_VOP) |
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BitstreamPutBits(bs, pParam->fixed_code, 3); // fixed_code = [1,4] |
|
739 |
} |
} |