465 |
} |
} |
466 |
} |
} |
467 |
|
|
468 |
|
static void |
469 |
|
validate_vector(VECTOR * mv, unsigned int x_pos, unsigned int y_pos, const DECODER * dec) |
470 |
|
{ |
471 |
|
/* clip a vector to valid range |
472 |
|
prevents crashes if bitstream is broken |
473 |
|
*/ |
474 |
|
int i; |
475 |
|
|
476 |
|
for (i = 0; i < 4; i++) { |
477 |
|
|
478 |
|
int border = (int)(dec->mb_width - x_pos) << (5 + dec->quarterpel); |
479 |
|
if (mv[i].x > border) { |
480 |
|
DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", mv[i].x, border, x_pos, y_pos); |
481 |
|
mv[i].x = border; |
482 |
|
} else { |
483 |
|
border = (-(int)x_pos-1) << (5 + dec->quarterpel); |
484 |
|
if (mv[i].x < border) { |
485 |
|
DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", mv[i].x, border, x_pos, y_pos); |
486 |
|
mv[i].x = border; |
487 |
|
} |
488 |
|
} |
489 |
|
|
490 |
|
border = (int)(dec->mb_height - y_pos) << (5 + dec->quarterpel); |
491 |
|
if (mv[i].y > border) { |
492 |
|
DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", mv[i].y, border, x_pos, y_pos); |
493 |
|
mv[i].y = border; |
494 |
|
} else { |
495 |
|
border = (-(int)y_pos-1) << (5 + dec->quarterpel); |
496 |
|
if (mv[i].y < border) { |
497 |
|
DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", mv[i].y, border, x_pos, y_pos); |
498 |
|
mv[i].y = border; |
499 |
|
} |
500 |
|
} |
501 |
|
} |
502 |
|
} |
503 |
|
|
504 |
/* decode an inter macroblock */ |
/* decode an inter macroblock */ |
505 |
static void |
static void |
506 |
decoder_mbinter(DECODER * dec, |
decoder_mbinter(DECODER * dec, |
538 |
mv[i] = pMB->mvs[i]; |
mv[i] = pMB->mvs[i]; |
539 |
} |
} |
540 |
|
|
541 |
for (i = 0; i < 4; i++) { |
validate_vector(mv, x_pos, y_pos, dec); |
|
/* clip to valid range */ |
|
|
int border = (int)(dec->mb_width - x_pos) << (5 + dec->quarterpel); |
|
|
if (mv[i].x > border) { |
|
|
DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", mv[i].x, border, x_pos, y_pos); |
|
|
mv[i].x = border; |
|
|
} else { |
|
|
border = (-(int)x_pos-1) << (5 + dec->quarterpel); |
|
|
if (mv[i].x < border) { |
|
|
DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", mv[i].x, border, x_pos, y_pos); |
|
|
mv[i].x = border; |
|
|
} |
|
|
} |
|
|
|
|
|
border = (int)(dec->mb_height - y_pos) << (5 + dec->quarterpel); |
|
|
if (mv[i].y > border) { |
|
|
DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", mv[i].y, border, x_pos, y_pos); |
|
|
mv[i].y = border; |
|
|
} else { |
|
|
border = (-(int)y_pos-1) << (5 + dec->quarterpel); |
|
|
if (mv[i].y < border) { |
|
|
DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", mv[i].y, border, x_pos, y_pos); |
|
|
mv[i].y = border; |
|
|
} |
|
|
} |
|
|
} |
|
542 |
|
|
543 |
start_timer(); |
start_timer(); |
544 |
|
|
1028 |
decoder_bf_interpolate_mbinter(DECODER * dec, |
decoder_bf_interpolate_mbinter(DECODER * dec, |
1029 |
IMAGE forward, |
IMAGE forward, |
1030 |
IMAGE backward, |
IMAGE backward, |
1031 |
const MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
1032 |
const uint32_t x_pos, |
const uint32_t x_pos, |
1033 |
const uint32_t y_pos, |
const uint32_t y_pos, |
1034 |
Bitstream * bs, |
Bitstream * bs, |
1045 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
1046 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
1047 |
|
|
1048 |
|
validate_vector(pMB->mvs, x_pos, y_pos, dec); |
1049 |
|
validate_vector(pMB->b_mvs, x_pos, y_pos, dec); |
1050 |
|
|
1051 |
if (!direct) { |
if (!direct) { |
1052 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
1053 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
1395 |
} |
} |
1396 |
} |
} |
1397 |
|
|
|
|
|
1398 |
int |
int |
1399 |
decoder_decode(DECODER * dec, |
decoder_decode(DECODER * dec, |
1400 |
xvid_dec_frame_t * frame, xvid_dec_stats_t * stats) |
xvid_dec_frame_t * frame, xvid_dec_stats_t * stats) |