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* * |
* * |
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* Revision history: * |
* Revision history: * |
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* * |
* * |
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* 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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/* not really MB related, but VLCs are only available here */ |
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void bs_put_spritetrajectory(Bitstream * bs, const int val) |
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{ |
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const int code = sprite_trajectory_code[val+16384].code; |
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const int len = sprite_trajectory_code[val+16384].len; |
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const int code2 = sprite_trajectory_len[len].code; |
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const int len2 = sprite_trajectory_len[len].len; |
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// printf("GMC=%d Code/Len = %d / %d ",val, code,len); |
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// printf("Code2 / Len2 = %d / %d \n",code2,len2); |
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BitstreamPutBits(bs, code2, len2); |
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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) |
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{ |
{ |
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DCT3D[0] = DCT3Dinter; |
DCT3D[0] = DCT3Dinter; |
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DCT3D[1] = DCT3Dintra; |
DCT3D[1] = DCT3Dintra; |
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/* init sprite_trajectory tables */ |
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/* even if GMC is not specified (it might be used later...) */ |
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sprite_trajectory_code[0+16384].code = 0; |
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sprite_trajectory_code[0+16384].len = 0; |
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for (k=0;k<14;k++) |
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{ |
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int limit = (1<<k); |
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for (i=-(2*limit-1); i<= -limit; i++) |
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{ |
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sprite_trajectory_code[i+16384].code = (2*limit-1)+i; |
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sprite_trajectory_code[i+16384].len = k+1; |
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} |
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for (i=limit; i<= 2*limit-1; i++) |
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{ |
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sprite_trajectory_code[i+16384].code = i; |
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sprite_trajectory_code[i+16384].len = k+1; |
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} |
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} |
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} |
} |
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static __inline void |
static __inline void |
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static __inline void |
static __inline void |
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CodeBlockIntra(const FRAMEINFO * frame, |
CodeBlockIntra(const FRAMEINFO * const frame, |
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const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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static void |
static void |
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CodeBlockInter(const FRAMEINFO * frame, |
CodeBlockInter(const FRAMEINFO * const frame, |
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const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
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mcbpc_inter_tab[mcbpc].len); |
mcbpc_inter_tab[mcbpc].len); |
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if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
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{ |
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/* decision on GMC is done in encoder.c now */ |
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BitstreamPutBit(bs, pMB->mcsel); // mcsel: '0'=local motion, '1'=GMC |
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} |
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// write cbpy |
// write cbpy |
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BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
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if (frame->global_flags & XVID_INTERLACING) { |
if (frame->global_flags & XVID_INTERLACING) { |
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if (pMB->cbp) { |
if (pMB->cbp) { |
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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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} |
} |
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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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} |
} |
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// code motion vector(s) |
// code motion vector(s) if motion is local |
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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++) { |
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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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bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
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pStat->iTextBits += bits; |
pStat->iTextBits += bits; |
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} |
} |
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void |
void |
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MBCoding(const FRAMEINFO * frame, |
MBCoding(const FRAMEINFO * const frame, |
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MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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Statistics * pStat) |
Statistics * pStat) |
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{ |
{ |
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if (frame->coding_type != I_VOP) |
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if (frame->coding_type == P_VOP) { |
BitstreamPutBit(bs, 0); // not_coded |
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BitstreamPutBit(bs, 0); // coded |
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} |
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if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
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CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
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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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do { |
do { |
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level = get_coeff(bs, &run, &last, 1, 0); |
level = get_coeff(bs, &run, &last, 1, 0); |
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if (run == -1) { |
if (run == -1) { |
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DEBUG("fatal: invalid run"); |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
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break; |
break; |
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} |
} |
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coeff += run; |
coeff += run; |
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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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if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
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DEBUG1("warning: intra_overflow", level); |
DPRINTF(DPRINTF_ERROR,"warning: intra_overflow %i", level); |
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} |
} |
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coeff++; |
coeff++; |
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} while (!last); |
} while (!last); |
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do { |
do { |
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level = get_coeff(bs, &run, &last, 0, 0); |
level = get_coeff(bs, &run, &last, 0, 0); |
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if (run == -1) { |
if (run == -1) { |
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DEBUG("fatal: invalid run"); |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
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break; |
break; |
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} |
} |
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p += run; |
p += run; |
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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)); |
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if (level < -127 || level > 127) { |
if (level < -2047 || level > 2047) { |
869 |
DEBUG1("warning: inter_overflow", level); |
DPRINTF(DPRINTF_ERROR,"warning: inter overflow %i", level); |
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} |
} |
871 |
p++; |
p++; |
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} while (!last); |
} while (!last); |