51 |
* exception also makes it possible to release a modified version which |
* exception also makes it possible to release a modified version which |
52 |
* carries forward this exception. |
* carries forward this exception. |
53 |
* |
* |
54 |
* $Id: decoder.c,v 1.45 2002-12-15 01:21:12 edgomez Exp $ |
* $Id: decoder.c,v 1.46 2003-02-11 21:56:31 edgomez Exp $ |
55 |
* |
* |
56 |
*************************************************************************/ |
*************************************************************************/ |
57 |
|
|
344 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
345 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
346 |
|
|
|
if (dec->quarterpel) |
|
|
{ |
|
|
uv_dx = (uv_dx >> 1) | (uv_dx & 1); |
|
|
uv_dy = (uv_dy >> 1) | (uv_dy & 1); |
|
|
} |
|
|
|
|
347 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
348 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
349 |
} else { |
} else { |
350 |
int sum; |
int sum; |
351 |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
352 |
|
|
|
if (dec->quarterpel) |
|
|
{ |
|
|
sum /= 2; |
|
|
} |
|
|
|
|
353 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
354 |
|
|
355 |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
356 |
|
|
|
if (dec->quarterpel) |
|
|
{ |
|
|
sum /= 2; |
|
|
} |
|
|
|
|
357 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
358 |
} |
} |
359 |
|
|
360 |
start_timer(); |
start_timer(); |
|
if(dec->quarterpel) { |
|
|
DPRINTF(DPRINTF_DEBUG, "QUARTERPEL\n"); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
|
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, |
|
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
|
|
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
|
|
} |
|
|
else { |
|
361 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
362 |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
363 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
366 |
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
367 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
368 |
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
|
} |
|
|
|
|
369 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
370 |
uv_dx, uv_dy, stride2, rounding); |
uv_dx, uv_dy, stride2, rounding); |
371 |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
728 |
} |
} |
729 |
} |
} |
730 |
|
|
|
|
|
|
/* add by MinChen <chenm001@163.com> */ |
|
|
/* decode B-frame motion vector */ |
|
|
void |
|
|
get_b_motion_vector(DECODER * dec, |
|
|
Bitstream * bs, |
|
|
int x, |
|
|
int y, |
|
|
VECTOR * mv, |
|
|
int fcode, |
|
|
const VECTOR pmv) |
|
|
{ |
|
|
int scale_fac = 1 << (fcode - 1); |
|
|
int high = (32 * scale_fac) - 1; |
|
|
int low = ((-32) * scale_fac); |
|
|
int range = (64 * scale_fac); |
|
|
|
|
|
int mv_x, mv_y; |
|
|
int pmv_x, pmv_y; |
|
|
|
|
|
pmv_x = pmv.x; |
|
|
pmv_y = pmv.y; |
|
|
|
|
|
mv_x = get_mv(bs, fcode); |
|
|
mv_y = get_mv(bs, fcode); |
|
|
|
|
|
mv_x += pmv_x; |
|
|
mv_y += pmv_y; |
|
|
|
|
|
if (mv_x < low) { |
|
|
mv_x += range; |
|
|
} else if (mv_x > high) { |
|
|
mv_x -= range; |
|
|
} |
|
|
|
|
|
if (mv_y < low) { |
|
|
mv_y += range; |
|
|
} else if (mv_y > high) { |
|
|
mv_y -= range; |
|
|
} |
|
|
|
|
|
mv->x = mv_x; |
|
|
mv->y = mv_y; |
|
|
} |
|
|
|
|
|
|
|
|
/* add by MinChen <chenm001@163.com> */ |
|
|
/* decode an B-frame forward & backward inter macroblock */ |
|
|
void |
|
|
decoder_bf_mbinter(DECODER * dec, |
|
|
const MACROBLOCK * pMB, |
|
|
const uint32_t x_pos, |
|
|
const uint32_t y_pos, |
|
|
const uint32_t cbp, |
|
|
Bitstream * bs, |
|
|
const uint32_t quant, |
|
|
const uint8_t ref) |
|
|
{ |
|
|
|
|
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
|
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
|
|
|
|
|
uint32_t stride = dec->edged_width; |
|
|
uint32_t stride2 = stride / 2; |
|
|
uint32_t next_block = stride * 8; |
|
|
uint32_t i; |
|
|
uint32_t iQuant = pMB->quant; |
|
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
int uv_dx, uv_dy; |
|
|
|
|
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
|
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
|
|
|
|
|
|
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
|
uv_dx = pMB->mvs[0].x; |
|
|
uv_dy = pMB->mvs[0].y; |
|
|
|
|
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
|
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
|
|
} else { |
|
|
int sum; |
|
|
|
|
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
|
|
uv_dx = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
|
|
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
|
|
uv_dy = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, 16 * y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
|
|
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, |
|
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
|
|
0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
|
|
0); |
|
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
|
|
uv_dx, uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
|
|
uv_dx, uv_dy, stride2, 0); |
|
|
stop_comp_timer(); |
|
|
|
|
|
for (i = 0; i < 6; i++) { |
|
|
if (cbp & (1 << (5 - i))) /* coded */ |
|
|
{ |
|
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); /* clear */ |
|
|
|
|
|
start_timer(); |
|
|
get_inter_block(bs, &block[i * 64]); |
|
|
stop_coding_timer(); |
|
|
|
|
|
start_timer(); |
|
|
if (dec->quant_type == 0) { |
|
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} else { |
|
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} |
|
|
stop_iquant_timer(); |
|
|
|
|
|
start_timer(); |
|
|
idct(&data[i * 64]); |
|
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
|
|
|
|
if (dec->interlacing && pMB->field_dct) { |
|
|
next_block = stride; |
|
|
stride *= 2; |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
if (cbp & 32) |
|
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
|
stop_transfer_timer(); |
|
|
} |
|
|
|
|
|
|
|
|
/* add by MinChen <chenm001@163.com> */ |
|
|
/* decode an B-frame direct & inter macroblock */ |
|
|
void |
|
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
|
|
IMAGE forward, |
|
|
IMAGE backward, |
|
|
const MACROBLOCK * pMB, |
|
|
const uint32_t x_pos, |
|
|
const uint32_t y_pos, |
|
|
Bitstream * bs) |
|
|
{ |
|
|
|
|
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
|
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
|
|
|
|
|
uint32_t stride = dec->edged_width; |
|
|
uint32_t stride2 = stride / 2; |
|
|
uint32_t next_block = stride * 8; |
|
|
uint32_t iQuant = pMB->quant; |
|
|
int uv_dx, uv_dy; |
|
|
int b_uv_dx, b_uv_dy; |
|
|
uint32_t i; |
|
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
const uint32_t cbp = pMB->cbp; |
|
|
|
|
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
|
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
|
|
|
|
|
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
|
uv_dx = pMB->mvs[0].x; |
|
|
uv_dy = pMB->mvs[0].y; |
|
|
|
|
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
|
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
|
|
|
|
|
b_uv_dx = pMB->b_mvs[0].x; |
|
|
b_uv_dy = pMB->b_mvs[0].y; |
|
|
|
|
|
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
|
|
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
|
|
} else { |
|
|
int sum; |
|
|
|
|
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
|
|
uv_dx = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
|
|
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
|
|
uv_dy = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
|
|
|
sum = |
|
|
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
|
|
pMB->b_mvs[3].x; |
|
|
b_uv_dx = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
|
|
|
sum = |
|
|
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
|
|
pMB->b_mvs[3].y; |
|
|
b_uv_dy = |
|
|
(sum == |
|
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
|
|
(ABS(sum) / 16) * 2)); |
|
|
} |
|
|
|
|
|
|
|
|
start_timer(); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
|
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
|
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
|
|
0); |
|
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
|
|
uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
|
|
uv_dy, stride2, 0); |
|
|
|
|
|
|
|
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
|
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
|
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
|
|
0); |
|
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
|
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
|
|
stride, 0); |
|
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
|
|
stride, 0); |
|
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
|
|
b_uv_dx, b_uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
|
|
b_uv_dx, b_uv_dy, stride2, 0); |
|
|
|
|
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
|
|
stride); |
|
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
|
|
stride); |
|
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
|
|
stride); |
|
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, stride); |
|
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
|
|
stride2); |
|
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
|
|
stride2); |
|
|
stop_comp_timer(); |
|
|
|
|
|
for (i = 0; i < 6; i++) { |
|
|
if (cbp & (1 << (5 - i))) /* coded */ |
|
|
{ |
|
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); /* clear */ |
|
|
|
|
|
start_timer(); |
|
|
get_inter_block(bs, &block[i * 64]); |
|
|
stop_coding_timer(); |
|
|
|
|
|
start_timer(); |
|
|
if (dec->quant_type == 0) { |
|
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} else { |
|
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} |
|
|
stop_iquant_timer(); |
|
|
|
|
|
start_timer(); |
|
|
idct(&data[i * 64]); |
|
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
|
|
|
|
if (dec->interlacing && pMB->field_dct) { |
|
|
next_block = stride; |
|
|
stride *= 2; |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
if (cbp & 32) |
|
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
|
stop_transfer_timer(); |
|
|
} |
|
|
|
|
|
|
|
|
/* add by MinChen <chenm001@163.com> */ |
|
|
/* for decode B-frame dbquant */ |
|
|
int32_t __inline |
|
|
get_dbquant(Bitstream * bs) |
|
|
{ |
|
|
if (!BitstreamGetBit(bs)) /* '0' */ |
|
|
return (0); |
|
|
else if (!BitstreamGetBit(bs)) /* '10' */ |
|
|
return (-2); |
|
|
else |
|
|
return (2); /* '11' */ |
|
|
} |
|
|
|
|
|
/* add by MinChen <chenm001@163.com> */ |
|
|
/* for decode B-frame mb_type */ |
|
|
/* bit ret_value */ |
|
|
/* 1 0 */ |
|
|
/* 01 1 */ |
|
|
/* 001 2 */ |
|
|
/* 0001 3 */ |
|
|
int32_t __inline |
|
|
get_mbtype(Bitstream * bs) |
|
|
{ |
|
|
int32_t mb_type; |
|
|
|
|
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
|
|
if (BitstreamGetBit(bs)) |
|
|
break; |
|
|
} |
|
|
|
|
|
if (mb_type <= 3) |
|
|
return (mb_type); |
|
|
else |
|
|
return (-1); |
|
|
} |
|
|
|
|
|
void |
|
|
decoder_bframe(DECODER * dec, |
|
|
Bitstream * bs, |
|
|
int quant, |
|
|
int fcode_forward, |
|
|
int fcode_backward) |
|
|
{ |
|
|
uint32_t x, y; |
|
|
VECTOR mv; |
|
|
const VECTOR zeromv = {0,0}; |
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
FILE *fp; |
|
|
static char first=0; |
|
|
#define BFRAME_DEBUG if (!first && fp){ \ |
|
|
fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
|
|
} |
|
|
#endif |
|
|
|
|
|
start_timer(); |
|
|
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
|
|
dec->width, dec->height); |
|
|
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
|
|
dec->width, dec->height); |
|
|
stop_edges_timer(); |
|
|
|
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
if (!first){ |
|
|
fp=fopen("C:\\XVIDDBG.TXT","w"); |
|
|
} |
|
|
#endif |
|
|
|
|
|
for (y = 0; y < dec->mb_height; y++) { |
|
|
/* Initialize Pred Motion Vector */ |
|
|
dec->p_fmv = dec->p_bmv = zeromv; |
|
|
for (x = 0; x < dec->mb_width; x++) { |
|
|
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
|
|
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
|
|
|
|
|
mv = |
|
|
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
|
|
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
|
|
|
|
|
/* the last P_VOP is skip macroblock ? */ |
|
|
if (last_mb->mode == MODE_NOT_CODED) { |
|
|
/*DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); */ |
|
|
mb->cbp = 0; |
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
mb->mb_type = MODE_NOT_CODED; |
|
|
BFRAME_DEBUG |
|
|
#endif |
|
|
mb->mb_type = MODE_FORWARD; |
|
|
mb->quant = last_mb->quant; |
|
|
/*mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; */ |
|
|
/*mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; */ |
|
|
|
|
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); |
|
|
continue; |
|
|
} |
|
|
|
|
|
if (!BitstreamGetBit(bs)) { /* modb=='0' */ |
|
|
const uint8_t modb2 = (uint8_t)BitstreamGetBit(bs); |
|
|
|
|
|
mb->mb_type = get_mbtype(bs); |
|
|
|
|
|
if (!modb2) { /* modb=='00' */ |
|
|
mb->cbp = BitstreamGetBits(bs, 6); |
|
|
} else { |
|
|
mb->cbp = 0; |
|
|
} |
|
|
if (mb->mb_type && mb->cbp) { |
|
|
quant += get_dbquant(bs); |
|
|
|
|
|
if (quant > 31) { |
|
|
quant = 31; |
|
|
} else if (quant < 1) { |
|
|
quant = 1; |
|
|
} |
|
|
} |
|
|
} else { |
|
|
mb->mb_type = MODE_DIRECT_NONE_MV; |
|
|
mb->cbp = 0; |
|
|
} |
|
|
|
|
|
mb->quant = quant; |
|
|
mb->mode = MODE_INTER4V; |
|
|
/*DEBUG1("Switch bm_type=",mb->mb_type); */ |
|
|
|
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
BFRAME_DEBUG |
|
|
#endif |
|
|
|
|
|
switch (mb->mb_type) { |
|
|
case MODE_DIRECT: |
|
|
get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); |
|
|
|
|
|
case MODE_DIRECT_NONE_MV: |
|
|
{ |
|
|
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; |
|
|
int i; |
|
|
|
|
|
for (i = 0; i < 4; i++) { |
|
|
mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) |
|
|
/ TRD + mv.x); |
|
|
mb->b_mvs[i].x = (int32_t) ((mv.x == 0) |
|
|
? ((TRB - TRD) * last_mb->mvs[i].x) |
|
|
/ TRD |
|
|
: mb->mvs[i].x - last_mb->mvs[i].x); |
|
|
mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) |
|
|
/ TRD + mv.y); |
|
|
mb->b_mvs[i].y = (int32_t) ((mv.y == 0) |
|
|
? ((TRB - TRD) * last_mb->mvs[i].y) |
|
|
/ TRD |
|
|
: mb->mvs[i].y - last_mb->mvs[i].y); |
|
|
} |
|
|
/*DEBUG("B-frame Direct!\n"); */ |
|
|
} |
|
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
|
|
mb, x, y, bs); |
|
|
break; |
|
|
|
|
|
case MODE_INTERPOLATE: |
|
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
|
|
dec->p_fmv); |
|
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
|
|
|
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
|
|
fcode_backward, dec->p_bmv); |
|
|
dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = |
|
|
mb->b_mvs[3] = mb->b_mvs[0]; |
|
|
|
|
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
|
|
mb, x, y, bs); |
|
|
/*DEBUG("B-frame Bidir!\n"); */ |
|
|
break; |
|
|
|
|
|
case MODE_BACKWARD: |
|
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
|
|
dec->p_bmv); |
|
|
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
|
|
|
|
mb->mode = MODE_INTER; |
|
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
|
|
/*DEBUG("B-frame Backward!\n"); */ |
|
|
break; |
|
|
|
|
|
case MODE_FORWARD: |
|
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
|
|
dec->p_fmv); |
|
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
|
|
|
|
mb->mode = MODE_INTER; |
|
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
|
|
/*DEBUG("B-frame Forward!\n"); */ |
|
|
break; |
|
|
|
|
|
default: |
|
|
DPRINTF(DPRINTF_ERROR, "Not support B-frame mb_type = %d", mb->mb_type); |
|
|
} |
|
|
|
|
|
} /* end of FOR */ |
|
|
} |
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
if (!first){ |
|
|
first=1; |
|
|
if (fp) |
|
|
fclose(fp); |
|
|
} |
|
|
#endif |
|
|
} |
|
|
|
|
731 |
/* swap two MACROBLOCK array */ |
/* swap two MACROBLOCK array */ |
732 |
void |
void |
733 |
mb_swap(MACROBLOCK ** mb1, |
mb_swap(MACROBLOCK ** mb1, |
771 |
case P_VOP: |
case P_VOP: |
772 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
773 |
intra_dc_threshold); |
intra_dc_threshold); |
|
#ifdef BFRAMES_DEC |
|
|
DPRINTF(DPRINTF_DEBUG, "P_VOP Time=%d", dec->time); |
|
|
#endif |
|
774 |
break; |
break; |
775 |
|
|
776 |
case I_VOP: |
case I_VOP: |
777 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
|
#ifdef BFRAMES_DEC |
|
|
DPRINTF(DPRINTF_DEBUG, "I_VOP Time=%d", dec->time); |
|
|
#endif |
|
778 |
break; |
break; |
|
|
|
779 |
case B_VOP: |
case B_VOP: |
|
#ifdef BFRAMES_DEC |
|
|
if (dec->time_pp > dec->time_bp) { |
|
|
DPRINTF(DPRINTF_DEBUG, "B_VOP Time=%d", dec->time); |
|
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
|
|
} else { |
|
|
DPRINTF(DPRINTF_DEBUG, "Broken B_VOP"); |
|
|
} |
|
|
#else |
|
780 |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
|
#endif |
|
781 |
break; |
break; |
782 |
|
case N_VOP: |
|
case N_VOP: /* vop not coded */ |
|
783 |
/* when low_delay==0, N_VOP's should interpolate between the past and future frames */ |
/* when low_delay==0, N_VOP's should interpolate between the past and future frames */ |
784 |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
785 |
break; |
break; |
788 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
789 |
} |
} |
790 |
|
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
|
if (frame->length != BitstreamPos(&bs) / 8){ |
|
|
DPRINTF(DPRINTF_DEBUG, "InLen: %d / UseLen: %d", frame->length, BitstreamPos(&bs) / 8); |
|
|
} |
|
|
#endif |
|
791 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
792 |
|
|
|
|
|
|
#ifdef BFRAMES_DEC |
|
|
/* test if no B_VOP */ |
|
|
if (dec->low_delay || dec->frames == 0) { |
|
|
#endif |
|
793 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
794 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
795 |
|
|
|
#ifdef BFRAMES_DEC |
|
|
} else { |
|
|
if (dec->frames >= 1) { |
|
|
start_timer(); |
|
|
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
|
|
image_output(&dec->refn[0], dec->width, dec->height, |
|
|
dec->edged_width, frame->image, frame->stride, |
|
|
frame->colorspace); |
|
|
} else if (vop_type == B_VOP) { |
|
|
image_output(&dec->cur, dec->width, dec->height, |
|
|
dec->edged_width, frame->image, frame->stride, |
|
|
frame->colorspace); |
|
|
} |
|
|
stop_conv_timer(); |
|
|
} |
|
|
} |
|
|
#endif |
|
|
|
|
796 |
if (vop_type == I_VOP || vop_type == P_VOP) { |
if (vop_type == I_VOP || vop_type == P_VOP) { |
797 |
image_swap(&dec->refn[0], &dec->refn[1]); |
image_swap(&dec->refn[0], &dec->refn[1]); |
798 |
image_swap(&dec->cur, &dec->refn[0]); |
image_swap(&dec->cur, &dec->refn[0]); |