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* * |
* * |
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* Revision history: * |
* Revision history: * |
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* * |
* * |
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* 28.10.2002 GMC support - gruel * |
* 04.01.2003 GMC support - gruel * |
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* 28.06.2002 added check_resync_marker() * |
* 28.06.2002 added check_resync_marker() * |
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* 14.04.2002 bframe encoding * |
* 14.04.2002 bframe encoding * |
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* 08.03.2002 initial version; isibaar * |
* 08.03.2002 initial version; isibaar * |
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******************************************************************************/ |
******************************************************************************/ |
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#include <stdio.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include "../portab.h" |
#include "../portab.h" |
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#include "../global.h" |
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#include "bitstream.h" |
#include "bitstream.h" |
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#include "zigzag.h" |
#include "zigzag.h" |
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#include "vlc_codes.h" |
#include "vlc_codes.h" |
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#include "../utils/mbfunctions.h" |
#include "../utils/mbfunctions.h" |
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#define ABS(X) (((X)>0)?(X):-(X)) |
VLC intra_table[4*2048*64]; |
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#define CLIP(X,A) (X > A) ? (A) : (X) |
VLC inter_table[4*2048*64]; |
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VLC intra_table[524032]; |
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VLC inter_table[524032]; |
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VLC DCT3Dintra[4096]; |
VLC DCT3Dintra[4096]; |
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VLC DCT3Dinter[4096]; |
VLC DCT3Dinter[4096]; |
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if (len) BitstreamPutBits(bs, code, len); |
if (len) BitstreamPutBits(bs, code, len); |
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} |
} |
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int bs_get_spritetrajectory(Bitstream * bs) |
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{ |
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int i; |
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for (i = 0; i < 12; i++) |
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{ |
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if (BitstreamShowBits(bs, sprite_trajectory_len[i].len) == sprite_trajectory_len[i].code) |
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{ |
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BitstreamSkip(bs, sprite_trajectory_len[i].len); |
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return i; |
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} |
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} |
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return -1; |
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} |
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void |
void |
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init_vlc_tables(void) |
init_vlc_tables(void) |
406 |
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407 |
int32_t i; |
int32_t i; |
408 |
uint32_t bits, mcbpc, cbpy; |
uint32_t bits, mcbpc, cbpy; |
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int mcsel=0; |
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409 |
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410 |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
411 |
cbpy = 15 - (pMB->cbp >> 2); |
cbpy = 15 - (pMB->cbp >> 2); |
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if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
418 |
{ |
{ |
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if (frame->quarterpel) { |
/* decision on GMC is done in encoder.c now */ |
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if ( (pMB->qmvs[0].x == frame->GMC_MV.x) && (pMB->qmvs[0].y == frame->GMC_MV.y) ) |
BitstreamPutBit(bs, pMB->mcsel); // mcsel: '0'=local motion, '1'=GMC |
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mcsel=1; |
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} else { |
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if ( (pMB->mvs[0].x == frame->GMC_MV.x) && (pMB->mvs[0].y == frame->GMC_MV.y) ) |
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mcsel=1; |
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} |
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BitstreamPutBit(bs, mcsel); // mcsel: '0'=local motion, '1'=GMC |
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421 |
} |
} |
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// write cbpy |
// write cbpy |
431 |
if (frame->global_flags & XVID_INTERLACING) { |
if (frame->global_flags & XVID_INTERLACING) { |
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if (pMB->cbp) { |
if (pMB->cbp) { |
433 |
BitstreamPutBit(bs, pMB->field_dct); |
BitstreamPutBit(bs, pMB->field_dct); |
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DEBUG1("codep: field_dct: ", pMB->field_dct); |
DPRINTF(DPRINTF_MB,"codep: field_dct: %i", pMB->field_dct); |
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} |
} |
436 |
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// if inter block, write field ME flag |
// if inter block, write field ME flag |
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if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
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BitstreamPutBit(bs, pMB->field_pred); |
BitstreamPutBit(bs, pMB->field_pred); |
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DEBUG1("codep: field_pred: ", pMB->field_pred); |
DPRINTF(DPRINTF_MB,"codep: field_pred: %i", pMB->field_pred); |
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// write field prediction references |
// write field prediction references |
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if (pMB->field_pred) { |
if (pMB->field_pred) { |
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} |
} |
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} |
} |
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// code motion vector(s) if motion is local |
// code motion vector(s) if motion is local |
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if (mcsel==0) |
if (!pMB->mcsel) |
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for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
452 |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
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CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
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675 |
uint32_t index; |
uint32_t index; |
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index = CLIP(BitstreamShowBits(bs, 9), 256); |
index = MIN(BitstreamShowBits(bs, 9), 256); |
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BitstreamSkip(bs, mcbpc_inter_table[index].len); |
BitstreamSkip(bs, mcbpc_inter_table[index].len); |
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822 |
do { |
do { |
823 |
level = get_coeff(bs, &run, &last, 1, 0); |
level = get_coeff(bs, &run, &last, 1, 0); |
824 |
if (run == -1) { |
if (run == -1) { |
825 |
DEBUG("fatal: invalid run"); |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
826 |
break; |
break; |
827 |
} |
} |
828 |
coeff += run; |
coeff += run; |
831 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
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//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
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834 |
if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
835 |
DEBUG1("warning: intra_overflow", level); |
DPRINTF(DPRINTF_ERROR,"warning: intra_overflow %i", level); |
836 |
} |
} |
837 |
coeff++; |
coeff++; |
838 |
} while (!last); |
} while (!last); |
855 |
do { |
do { |
856 |
level = get_coeff(bs, &run, &last, 0, 0); |
level = get_coeff(bs, &run, &last, 0, 0); |
857 |
if (run == -1) { |
if (run == -1) { |
858 |
DEBUG("fatal: invalid run"); |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
859 |
break; |
break; |
860 |
} |
} |
861 |
p += run; |
p += run; |
865 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
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// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
867 |
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868 |
if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
869 |
DEBUG1("warning: inter_overflow", level); |
DPRINTF(DPRINTF_ERROR,"warning: inter overflow %i", level); |
870 |
} |
} |
871 |
p++; |
p++; |
872 |
} while (!last); |
} while (!last); |