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* along with this program ; if not, write to the Free Software |
* along with this program ; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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* $Id: decoder.c,v 1.63 2004-07-24 11:46:08 edgomez Exp $ |
* $Id: decoder.c,v 1.64 2004-07-26 19:32:28 edgomez Exp $ |
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* |
* |
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****************************************************************************/ |
****************************************************************************/ |
26 |
|
|
396 |
uint8_t * pY_Cur, |
uint8_t * pY_Cur, |
397 |
uint8_t * pU_Cur, |
uint8_t * pU_Cur, |
398 |
uint8_t * pV_Cur, |
uint8_t * pV_Cur, |
399 |
const int reduced_resolution, |
int reduced_resolution, |
400 |
const MACROBLOCK * pMB) |
const MACROBLOCK * pMB) |
401 |
{ |
{ |
402 |
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(data, 1, 64, int16_t, CACHE_LINE); |
403 |
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|
404 |
int stride = dec->edged_width; |
int stride = dec->edged_width; |
405 |
int next_block = stride * (reduced_resolution ? 16 : 8); |
int next_block = stride * (reduced_resolution ? 16 : 8); |
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const int stride2 = stride/2; |
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406 |
int i; |
int i; |
407 |
const uint32_t iQuant = pMB->quant; |
const uint32_t iQuant = pMB->quant; |
408 |
const int direction = dec->alternate_vertical_scan ? 2 : 0; |
const int direction = dec->alternate_vertical_scan ? 2 : 0; |
412 |
int direction, |
int direction, |
413 |
const int quant, |
const int quant, |
414 |
const uint16_t *matrix); |
const uint16_t *matrix); |
415 |
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typedef void (*add_residual_function_t)( |
416 |
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uint8_t *predicted_block, |
417 |
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const int16_t *residual, |
418 |
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int stride); |
419 |
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const get_inter_block_function_t get_inter_block = (dec->quant_type == 0) |
const get_inter_block_function_t get_inter_block = (dec->quant_type == 0) |
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? get_inter_block_h263 |
? (get_inter_block_function_t)get_inter_block_h263 |
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: get_inter_block_mpeg; |
: (get_inter_block_function_t)get_inter_block_mpeg; |
423 |
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|
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memset(&data[0], 0, 6*64*sizeof(int16_t)); /* clear */ |
const add_residual_function_t add_residual = (reduced_resolution) |
425 |
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? (add_residual_function_t)add_upsampled_8x8_16to8 |
426 |
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: (add_residual_function_t)transfer_16to8add; |
427 |
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for (i = 0; i < 6; i++) { |
uint8_t *dst[6]; |
429 |
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int strides[6]; |
430 |
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if (cbp & (1 << (5 - i))) { /* coded */ |
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431 |
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432 |
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if (dec->interlacing && pMB->field_dct) { |
433 |
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next_block = stride; |
434 |
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stride *= 2; |
435 |
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} |
436 |
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437 |
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reduced_resolution = !!reduced_resolution; |
438 |
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dst[0] = pY_Cur; |
439 |
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dst[2] = pY_Cur + next_block; |
440 |
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dst[1] = dst[0] + (8<<reduced_resolution); |
441 |
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dst[3] = dst[2] + (8<<reduced_resolution); |
442 |
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dst[4] = pU_Cur; |
443 |
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dst[5] = pV_Cur; |
444 |
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strides[0] = strides[1] = strides[2] = strides[3] = stride; |
445 |
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strides[4] = stride/2; |
446 |
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strides[5] = stride/2; |
447 |
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448 |
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for (i = 0; i < 6; i++) { |
449 |
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/* Process only coded blocks */ |
450 |
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if (cbp & (1 << (5 - i))) { |
451 |
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452 |
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/* Clear the block */ |
453 |
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memset(&data[0], 0, 64*sizeof(int16_t)); |
454 |
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|
455 |
/* Decode coeffs and dequantize on the fly */ |
/* Decode coeffs and dequantize on the fly */ |
456 |
start_timer(); |
start_timer(); |
457 |
get_inter_block(bs, &data[i*64], direction, iQuant, get_inter_matrix(dec->mpeg_quant_matrices)); |
get_inter_block(bs, &data[0], direction, iQuant, get_inter_matrix(dec->mpeg_quant_matrices)); |
458 |
stop_coding_timer(); |
stop_coding_timer(); |
459 |
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|
460 |
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/* iDCT */ |
461 |
start_timer(); |
start_timer(); |
462 |
idct(&data[i * 64]); |
idct(&data[0]); |
463 |
stop_idct_timer(); |
stop_idct_timer(); |
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} |
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} |
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if (dec->interlacing && pMB->field_dct) { |
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next_block = stride; |
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stride *= 2; |
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} |
|
464 |
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465 |
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/* Add this residual to the predicted block */ |
466 |
start_timer(); |
start_timer(); |
467 |
if (reduced_resolution) { |
add_residual(dst[i], &data[0], strides[i]); |
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if (cbp & 32) |
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add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); |
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if (cbp & 16) |
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add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); |
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if (cbp & 8) |
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add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); |
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if (cbp & 4) |
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add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); |
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if (cbp & 2) |
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add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); |
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if (cbp & 1) |
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add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); |
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} else { |
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if (cbp & 32) |
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transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
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if (cbp & 16) |
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transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
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if (cbp & 8) |
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transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
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if (cbp & 4) |
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transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
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if (cbp & 2) |
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transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
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if (cbp & 1) |
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transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
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} |
|
468 |
stop_transfer_timer(); |
stop_transfer_timer(); |
469 |
} |
} |
470 |
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} |
471 |
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} |
472 |
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|
473 |
/* decode an inter macroblock */ |
/* decode an inter macroblock */ |
474 |
static void |
static void |