41 |
* * |
* * |
42 |
* Revision history: * |
* Revision history: * |
43 |
* * |
* * |
44 |
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* 28.10.2002 GMC support - gruel * |
45 |
* 28.06.2002 added check_resync_marker() * |
* 28.06.2002 added check_resync_marker() * |
46 |
* 14.04.2002 bframe encoding * |
* 14.04.2002 bframe encoding * |
47 |
* 08.03.2002 initial version; isibaar * |
* 08.03.2002 initial version; isibaar * |
68 |
VLC DCT3Dintra[4096]; |
VLC DCT3Dintra[4096]; |
69 |
VLC DCT3Dinter[4096]; |
VLC DCT3Dinter[4096]; |
70 |
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71 |
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/* not really MB related, but VLCs are only available here */ |
72 |
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void inline bs_put_spritetrajectory(Bitstream * bs, |
73 |
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const int val) |
74 |
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{ |
75 |
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const int code = sprite_trajectory_code[val+16384].code; |
76 |
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const int len = sprite_trajectory_code[val+16384].len; |
77 |
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const int code2 = sprite_trajectory_len[len].code; |
78 |
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const int len2 = sprite_trajectory_len[len].len; |
79 |
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80 |
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// printf("GMC=%d Code/Len = %d / %d ",val, code,len); |
81 |
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// printf("Code2 / Len2 = %d / %d \n",code2,len2); |
82 |
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83 |
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BitstreamPutBits(bs, code2, len2); |
84 |
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if (len) BitstreamPutBits(bs, code, len); |
85 |
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} |
86 |
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87 |
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88 |
void |
void |
89 |
init_vlc_tables(void) |
init_vlc_tables(void) |
90 |
{ |
{ |
201 |
DCT3D[0] = DCT3Dinter; |
DCT3D[0] = DCT3Dinter; |
202 |
DCT3D[1] = DCT3Dintra; |
DCT3D[1] = DCT3Dintra; |
203 |
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204 |
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205 |
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/* init sprite_trajectory tables */ |
206 |
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/* even if GMC is not specified (it might be used later...) */ |
207 |
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208 |
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sprite_trajectory_code[0+16384].code = 0; |
209 |
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sprite_trajectory_code[0+16384].len = 0; |
210 |
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for (k=0;k<14;k++) |
211 |
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{ |
212 |
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int limit = (1<<k); |
213 |
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214 |
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for (i=-(2*limit-1); i<= -limit; i++) |
215 |
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{ |
216 |
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sprite_trajectory_code[i+16384].code = (2*limit-1)+i; |
217 |
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sprite_trajectory_code[i+16384].len = k+1; |
218 |
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} |
219 |
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220 |
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for (i=limit; i<= 2*limit-1; i++) |
221 |
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{ |
222 |
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sprite_trajectory_code[i+16384].code = i; |
223 |
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sprite_trajectory_code[i+16384].len = k+1; |
224 |
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} |
225 |
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} |
226 |
} |
} |
227 |
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228 |
static __inline void |
static __inline void |
321 |
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322 |
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323 |
static __inline void |
static __inline void |
324 |
CodeBlockIntra(const FRAMEINFO * frame, |
CodeBlockIntra(const FRAMEINFO * const frame, |
325 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
326 |
int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
327 |
Bitstream * bs, |
Bitstream * bs, |
387 |
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388 |
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389 |
static void |
static void |
390 |
CodeBlockInter(const FRAMEINFO * frame, |
CodeBlockInter(const FRAMEINFO * const frame, |
391 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
392 |
int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
393 |
Bitstream * bs, |
Bitstream * bs, |
396 |
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|
397 |
int32_t i; |
int32_t i; |
398 |
uint32_t bits, mcbpc, cbpy; |
uint32_t bits, mcbpc, cbpy; |
399 |
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int mcsel=0; |
400 |
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401 |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
mcbpc = (pMB->mode & 7) | ((pMB->cbp & 3) << 3); |
402 |
cbpy = 15 - (pMB->cbp >> 2); |
cbpy = 15 - (pMB->cbp >> 2); |
405 |
BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
406 |
mcbpc_inter_tab[mcbpc].len); |
mcbpc_inter_tab[mcbpc].len); |
407 |
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408 |
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if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
409 |
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{ |
410 |
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if (frame->quarterpel) { |
411 |
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if ( (pMB->qmvs[0].x == frame->GMC_MV.x) && (pMB->qmvs[0].y == frame->GMC_MV.y) ) |
412 |
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mcsel=1; |
413 |
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} else { |
414 |
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if ( (pMB->mvs[0].x == frame->GMC_MV.x) && (pMB->mvs[0].y == frame->GMC_MV.y) ) |
415 |
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mcsel=1; |
416 |
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} |
417 |
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BitstreamPutBit(bs, mcsel); // mcsel: '0'=local motion, '1'=GMC |
418 |
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} |
419 |
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420 |
// write cbpy |
// write cbpy |
421 |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
422 |
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443 |
} |
} |
444 |
} |
} |
445 |
} |
} |
446 |
// code motion vector(s) |
// code motion vector(s) if motion is local |
447 |
|
if (mcsel==0) |
448 |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
449 |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
450 |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
465 |
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466 |
bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
467 |
pStat->iTextBits += bits; |
pStat->iTextBits += bits; |
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468 |
} |
} |
469 |
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470 |
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471 |
void |
void |
472 |
MBCoding(const FRAMEINFO * frame, |
MBCoding(const FRAMEINFO * const frame, |
473 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
474 |
int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
475 |
Bitstream * bs, |
Bitstream * bs, |
476 |
Statistics * pStat) |
Statistics * pStat) |
477 |
{ |
{ |
478 |
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if (frame->coding_type != I_VOP) |
479 |
if (frame->coding_type == P_VOP) { |
BitstreamPutBit(bs, 0); // not_coded |
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BitstreamPutBit(bs, 0); // coded |
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} |
|
480 |
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481 |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
482 |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |