72 |
|
|
73 |
#ifdef BIGLUT |
#ifdef BIGLUT |
74 |
static VLC coeff_VLC[2][2][4096][64]; |
static VLC coeff_VLC[2][2][4096][64]; |
75 |
static VLC *intra_table, *inter_table; |
VLC *intra_table; |
76 |
|
static VLC *inter_table; |
77 |
#else |
#else |
78 |
static VLC coeff_VLC[2][2][64][64]; |
static VLC coeff_VLC[2][2][64][64]; |
79 |
#endif |
#endif |
110 |
void |
void |
111 |
init_vlc_tables(void) |
init_vlc_tables(void) |
112 |
{ |
{ |
113 |
ptr_t i, j, k, intra, last, run, run_esc, level, level_esc, escape, escape_len, offset; |
uint32_t i, j, k, intra, last, run, run_esc, level, level_esc, escape, escape_len, offset; |
114 |
int32_t l; |
int32_t l; |
115 |
|
|
116 |
#ifdef BIGLUT |
#ifdef BIGLUT |
127 |
for (last = 0; last < 2; last++) |
for (last = 0; last < 2; last++) |
128 |
{ |
{ |
129 |
for (run = 0; run < 63 + last; run++) |
for (run = 0; run < 63 + last; run++) |
130 |
for (level = 0; level < 32 << intra; level++) |
for (level = 0; level < (uint32_t)(32 << intra); level++) |
131 |
{ |
{ |
132 |
#ifdef BIGLUT |
#ifdef BIGLUT |
133 |
offset = LEVELOFFSET; |
offset = LEVELOFFSET; |
146 |
#else |
#else |
147 |
offset = !intra * LEVELOFFSET; |
offset = !intra * LEVELOFFSET; |
148 |
#endif |
#endif |
149 |
for (j = 0; j < 1 << (12 - coeff_tab[intra][i].vlc.len); j++) |
for (j = 0; j < (uint32_t)(1 << (12 - coeff_tab[intra][i].vlc.len)); j++) |
150 |
{ |
{ |
151 |
DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].len = coeff_tab[intra][i].vlc.len; |
DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].len = coeff_tab[intra][i].vlc.len; |
152 |
DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].event = coeff_tab[intra][i].event; |
DCT3D[intra][(coeff_tab[intra][i].vlc.code << (12 - coeff_tab[intra][i].vlc.len)) | j].event = coeff_tab[intra][i].event; |
171 |
for (last = 0; last < 2; last++) |
for (last = 0; last < 2; last++) |
172 |
for (run = 0; run < 63 + last; run++) |
for (run = 0; run < 63 + last; run++) |
173 |
{ |
{ |
174 |
for (level = 1; level < 32 << intra; level++) |
for (level = 1; level < (uint32_t)(32 << intra); level++) |
175 |
{ |
{ |
176 |
if (level <= max_level[intra][last][run] && run <= max_run[intra][last][level]) |
if (level <= max_level[intra][last][run] && run <= max_run[intra][last][level]) |
177 |
continue; |
continue; |
196 |
} |
} |
197 |
else |
else |
198 |
{ |
{ |
199 |
if (level <= max_level[intra][last][run_esc] && run_esc <= max_run[intra][last][level]) |
if (run_esc <= max_run[intra][last][level] && level <= max_level[intra][last][run_esc]) |
200 |
{ |
{ |
201 |
escape = ESCAPE2; |
escape = ESCAPE2; |
202 |
escape_len = 7 + 2; |
escape_len = 7 + 2; |
374 |
|
|
375 |
} |
} |
376 |
|
|
377 |
|
|
378 |
|
|
379 |
|
/* returns the number of bits required to encode qcoeff */ |
380 |
|
int |
381 |
|
CodeCoeff_CalcBits(const int16_t qcoeff[64], |
382 |
|
VLC * table, |
383 |
|
const uint16_t * zigzag, |
384 |
|
uint16_t intra) |
385 |
|
{ |
386 |
|
int bits = 0; |
387 |
|
uint32_t j, last; |
388 |
|
short v; |
389 |
|
VLC *vlc; |
390 |
|
|
391 |
|
j = intra; |
392 |
|
last = intra; |
393 |
|
|
394 |
|
while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) |
395 |
|
j++; |
396 |
|
|
397 |
|
if (j >= 64) return 0; /* empty block */ |
398 |
|
|
399 |
|
do { |
400 |
|
vlc = table + 64 * 2048 + (v << 6) + j - last; |
401 |
|
last = ++j; |
402 |
|
|
403 |
|
/* count zeroes */ |
404 |
|
while (j < 64 && (v = qcoeff[zigzag[j]]) == 0) |
405 |
|
j++; |
406 |
|
|
407 |
|
/* write code */ |
408 |
|
if (j != 64) { |
409 |
|
bits += vlc->len; |
410 |
|
} else { |
411 |
|
vlc += 64 * 4096; |
412 |
|
bits += vlc->len; |
413 |
|
break; |
414 |
|
} |
415 |
|
} while (1); |
416 |
|
|
417 |
|
return bits; |
418 |
|
} |
419 |
|
|
420 |
|
|
421 |
#else |
#else |
422 |
|
|
423 |
static __inline void |
static __inline void |
487 |
i = 1; |
i = 1; |
488 |
run = 0; |
run = 0; |
489 |
|
|
490 |
while (!(level = qcoeff[zigzag[i++]])) |
while (i<64 && !(level = qcoeff[zigzag[i++]])) |
491 |
run++; |
run++; |
492 |
|
|
493 |
prev_level = level; |
prev_level = level; |
532 |
BitstreamPutBits(bs, code, len); |
BitstreamPutBits(bs, code, len); |
533 |
} |
} |
534 |
|
|
535 |
|
|
536 |
|
|
537 |
|
/* returns the number of bits required to encode qcoeff */ |
538 |
|
|
539 |
|
int |
540 |
|
CodeCoeffIntra_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag) |
541 |
|
{ |
542 |
|
int bits = 0; |
543 |
|
uint32_t i, abs_level, run, prev_run, len; |
544 |
|
int32_t level, prev_level; |
545 |
|
|
546 |
|
i = 1; |
547 |
|
run = 0; |
548 |
|
|
549 |
|
while (i<64 && !(level = qcoeff[zigzag[i++]])) |
550 |
|
run++; |
551 |
|
|
552 |
|
if (i >= 64) return 0; /* empty block */ |
553 |
|
|
554 |
|
prev_level = level; |
555 |
|
prev_run = run; |
556 |
|
run = 0; |
557 |
|
|
558 |
|
while (i < 64) |
559 |
|
{ |
560 |
|
if ((level = qcoeff[zigzag[i++]]) != 0) |
561 |
|
{ |
562 |
|
abs_level = ABS(prev_level); |
563 |
|
abs_level = abs_level < 64 ? abs_level : 0; |
564 |
|
len = coeff_VLC[1][0][abs_level][prev_run].len; |
565 |
|
bits += len!=128 ? len : 30; |
566 |
|
|
567 |
|
prev_level = level; |
568 |
|
prev_run = run; |
569 |
|
run = 0; |
570 |
|
} |
571 |
|
else |
572 |
|
run++; |
573 |
|
} |
574 |
|
|
575 |
|
abs_level = ABS(prev_level); |
576 |
|
abs_level = abs_level < 64 ? abs_level : 0; |
577 |
|
len = coeff_VLC[1][1][abs_level][prev_run].len; |
578 |
|
bits += len!=128 ? len : 30; |
579 |
|
|
580 |
|
return bits; |
581 |
|
} |
582 |
|
|
583 |
|
int |
584 |
|
CodeCoeffInter_CalcBits(const int16_t qcoeff[64], const uint16_t * zigzag) |
585 |
|
{ |
586 |
|
uint32_t i, run, prev_run, len; |
587 |
|
int32_t level, prev_level, level_shifted; |
588 |
|
int bits = 0; |
589 |
|
|
590 |
|
i = 0; |
591 |
|
run = 0; |
592 |
|
|
593 |
|
while (!(level = qcoeff[zigzag[i++]])) |
594 |
|
run++; |
595 |
|
|
596 |
|
prev_level = level; |
597 |
|
prev_run = run; |
598 |
|
run = 0; |
599 |
|
|
600 |
|
while (i < 64) { |
601 |
|
if ((level = qcoeff[zigzag[i++]]) != 0) { |
602 |
|
level_shifted = prev_level + 32; |
603 |
|
if (!(level_shifted & -64)) |
604 |
|
len = coeff_VLC[0][0][level_shifted][prev_run].len; |
605 |
|
else |
606 |
|
len = 30; |
607 |
|
|
608 |
|
bits += len; |
609 |
|
prev_level = level; |
610 |
|
prev_run = run; |
611 |
|
run = 0; |
612 |
|
} |
613 |
|
else |
614 |
|
run++; |
615 |
|
} |
616 |
|
|
617 |
|
level_shifted = prev_level + 32; |
618 |
|
if (!(level_shifted & -64)) |
619 |
|
len = coeff_VLC[0][1][level_shifted][prev_run].len; |
620 |
|
else |
621 |
|
len = 30; |
622 |
|
bits += len; |
623 |
|
|
624 |
|
return bits; |
625 |
|
} |
626 |
|
|
627 |
|
|
628 |
#endif |
#endif |
629 |
|
|
630 |
static __inline void |
static __inline void |