32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 22.06.2002 added primative N_VOP support |
36 |
|
* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
37 |
* 08.05.2002 add low_delay support for B_VOP decode |
* 08.05.2002 add low_delay support for B_VOP decode |
38 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
39 |
* 05.05.2002 fix some B-frame decode problem |
* 05.05.2002 fix some B-frame decode problem |
79 |
#include "image/colorspace.h" |
#include "image/colorspace.h" |
80 |
#include "utils/mem_align.h" |
#include "utils/mem_align.h" |
81 |
|
|
82 |
int decoder_create(XVID_DEC_PARAM * param) |
int |
83 |
|
decoder_create(XVID_DEC_PARAM * param) |
84 |
{ |
{ |
85 |
DECODER * dec; |
DECODER * dec; |
86 |
|
|
87 |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
88 |
if (dec == NULL) |
if (dec == NULL) { |
|
{ |
|
89 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
90 |
} |
} |
91 |
param->handle = dec; |
param->handle = dec; |
98 |
|
|
99 |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
100 |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
101 |
|
dec->low_delay = 0; |
102 |
|
|
103 |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
|
{ |
|
104 |
xvid_free(dec); |
xvid_free(dec); |
105 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
106 |
} |
} |
107 |
|
|
108 |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
|
{ |
|
109 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
110 |
xvid_free(dec); |
xvid_free(dec); |
111 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
112 |
} |
} |
113 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
114 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
115 |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
|
{ |
|
116 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
117 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
118 |
xvid_free(dec); |
xvid_free(dec); |
119 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
120 |
} |
} |
121 |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
|
{ |
|
122 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
123 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
124 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
126 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
127 |
} |
} |
128 |
|
|
129 |
dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->mbs = |
130 |
if (dec->mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
131 |
{ |
CACHE_LINE); |
132 |
|
if (dec->mbs == NULL) { |
133 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
134 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
135 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
137 |
xvid_free(dec); |
xvid_free(dec); |
138 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
139 |
} |
} |
140 |
|
|
141 |
|
memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
142 |
|
|
143 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
144 |
// for skip MB flag |
// for skip MB flag |
145 |
dec->last_mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->last_mbs = |
146 |
if (dec->last_mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
147 |
{ |
CACHE_LINE); |
148 |
|
if (dec->last_mbs == NULL) { |
149 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
150 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
151 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
155 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
156 |
} |
} |
157 |
|
|
158 |
|
memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
159 |
|
|
160 |
init_timer(); |
init_timer(); |
161 |
|
|
162 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
168 |
} |
} |
169 |
|
|
170 |
|
|
171 |
int decoder_destroy(DECODER * dec) |
int |
172 |
|
decoder_destroy(DECODER * dec) |
173 |
{ |
{ |
174 |
xvid_free(dec->last_mbs); |
xvid_free(dec->last_mbs); |
175 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
185 |
|
|
186 |
|
|
187 |
|
|
188 |
static const int32_t dquant_table[4] = |
static const int32_t dquant_table[4] = { |
|
{ |
|
189 |
-1, -2, 1, 2 |
-1, -2, 1, 2 |
190 |
}; |
}; |
191 |
|
|
194 |
|
|
195 |
// decode an intra macroblock |
// decode an intra macroblock |
196 |
|
|
197 |
void decoder_mbintra(DECODER * dec, |
void |
198 |
|
decoder_mbintra(DECODER * dec, |
199 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
200 |
const uint32_t x_pos, |
const uint32_t x_pos, |
201 |
const uint32_t y_pos, |
const uint32_t y_pos, |
222 |
|
|
223 |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
224 |
|
|
225 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
226 |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
227 |
int16_t predictors[8]; |
int16_t predictors[8]; |
228 |
int start_coeff; |
int start_coeff; |
229 |
|
|
230 |
start_timer(); |
start_timer(); |
231 |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i*64], iQuant, iDcScaler, predictors); |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
232 |
if (!acpred_flag) |
iQuant, iDcScaler, predictors); |
233 |
{ |
if (!acpred_flag) { |
234 |
pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
235 |
} |
} |
236 |
stop_prediction_timer(); |
stop_prediction_timer(); |
237 |
|
|
238 |
if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) { |
|
{ |
|
239 |
int dc_size; |
int dc_size; |
240 |
int dc_dif; |
int dc_dif; |
241 |
|
|
242 |
dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
243 |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
244 |
|
|
245 |
if (dc_size > 8) |
if (dc_size > 8) { |
|
{ |
|
246 |
BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
247 |
} |
} |
248 |
|
|
249 |
block[i*64 + 0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
250 |
start_coeff = 1; |
start_coeff = 1; |
251 |
} |
} else { |
|
else |
|
|
{ |
|
252 |
start_coeff = 0; |
start_coeff = 0; |
253 |
} |
} |
254 |
|
|
255 |
start_timer(); |
start_timer(); |
256 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
257 |
{ |
{ |
258 |
get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
259 |
|
start_coeff); |
260 |
} |
} |
261 |
stop_coding_timer(); |
stop_coding_timer(); |
262 |
|
|
265 |
stop_prediction_timer(); |
stop_prediction_timer(); |
266 |
|
|
267 |
start_timer(); |
start_timer(); |
268 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
269 |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
270 |
} |
} else { |
|
else |
|
|
{ |
|
271 |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
272 |
} |
} |
273 |
stop_iquant_timer(); |
stop_iquant_timer(); |
277 |
stop_idct_timer(); |
stop_idct_timer(); |
278 |
} |
} |
279 |
|
|
280 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
281 |
next_block = stride; |
next_block = stride; |
282 |
stride *= 2; |
stride *= 2; |
283 |
} |
} |
304 |
|
|
305 |
// decode an inter macroblock |
// decode an inter macroblock |
306 |
|
|
307 |
void decoder_mbinter(DECODER * dec, |
void |
308 |
|
decoder_mbinter(DECODER * dec, |
309 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
310 |
const uint32_t x_pos, |
const uint32_t x_pos, |
311 |
const uint32_t y_pos, |
const uint32_t y_pos, |
331 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
332 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
333 |
|
|
334 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
|
{ |
|
335 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
336 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
337 |
|
|
338 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
339 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
340 |
} |
} else { |
|
else |
|
|
{ |
|
341 |
int sum; |
int sum; |
342 |
|
|
343 |
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; |
344 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
345 |
|
(sum == |
346 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
347 |
|
(ABS(sum) / 16) * 2)); |
348 |
|
|
349 |
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; |
350 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
351 |
|
(sum == |
352 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
353 |
|
(ABS(sum) / 16) * 2)); |
354 |
} |
} |
355 |
|
|
356 |
start_timer(); |
start_timer(); |
357 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos, 16 * y_pos, |
358 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
359 |
interpolate8x8_switch(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_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
360 |
interpolate8x8_switch(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); |
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, |
361 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
362 |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos, |
363 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
364 |
|
rounding); |
365 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
366 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
367 |
|
rounding); |
368 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
369 |
|
uv_dx, uv_dy, stride2, rounding); |
370 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
371 |
|
uv_dx, uv_dy, stride2, rounding); |
372 |
stop_comp_timer(); |
stop_comp_timer(); |
373 |
|
|
374 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
375 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
376 |
{ |
{ |
377 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
381 |
stop_coding_timer(); |
stop_coding_timer(); |
382 |
|
|
383 |
start_timer(); |
start_timer(); |
384 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
385 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
386 |
} |
} else { |
|
else |
|
|
{ |
|
387 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
388 |
} |
} |
389 |
stop_iquant_timer(); |
stop_iquant_timer(); |
394 |
} |
} |
395 |
} |
} |
396 |
|
|
397 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
398 |
next_block = stride; |
next_block = stride; |
399 |
stride *= 2; |
stride *= 2; |
400 |
} |
} |
416 |
} |
} |
417 |
|
|
418 |
|
|
419 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
420 |
|
decoder_iframe(DECODER * dec, |
421 |
|
Bitstream * bs, |
422 |
|
int quant, |
423 |
|
int intra_dc_threshold) |
424 |
{ |
{ |
425 |
|
|
426 |
uint32_t x, y; |
uint32_t x, y; |
427 |
|
|
428 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
429 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
430 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
431 |
|
|
432 |
uint32_t mcbpc; |
uint32_t mcbpc; |
441 |
|
|
442 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
443 |
|
|
444 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
445 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
446 |
continue; |
continue; |
447 |
} |
} |
449 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
450 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
451 |
|
|
452 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
453 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
454 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
455 |
quant = 31; |
quant = 31; |
456 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
457 |
quant = 1; |
quant = 1; |
458 |
} |
} |
459 |
} |
} |
460 |
mb->quant = quant; |
mb->quant = quant; |
461 |
|
|
462 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
463 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
464 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
465 |
} |
} |
466 |
|
|
467 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
468 |
|
intra_dc_threshold); |
469 |
} |
} |
470 |
} |
} |
471 |
|
|
472 |
} |
} |
473 |
|
|
474 |
|
|
475 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
476 |
|
get_motion_vector(DECODER * dec, |
477 |
|
Bitstream * bs, |
478 |
|
int x, |
479 |
|
int y, |
480 |
|
int k, |
481 |
|
VECTOR * mv, |
482 |
|
int fcode) |
483 |
{ |
{ |
484 |
|
|
485 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
505 |
mv_x += pmv_x; |
mv_x += pmv_x; |
506 |
mv_y += pmv_y; |
mv_y += pmv_y; |
507 |
|
|
508 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
509 |
mv_x += range; |
mv_x += range; |
510 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
511 |
mv_x -= range; |
mv_x -= range; |
512 |
} |
} |
513 |
|
|
514 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
515 |
mv_y += range; |
mv_y += range; |
516 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
517 |
mv_y -= range; |
mv_y -= range; |
518 |
} |
} |
519 |
|
|
523 |
} |
} |
524 |
|
|
525 |
|
|
526 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
527 |
|
decoder_pframe(DECODER * dec, |
528 |
|
Bitstream * bs, |
529 |
|
int rounding, |
530 |
|
int quant, |
531 |
|
int fcode, |
532 |
|
int intra_dc_threshold) |
533 |
{ |
{ |
534 |
|
|
535 |
uint32_t x, y; |
uint32_t x, y; |
536 |
|
|
537 |
start_timer(); |
start_timer(); |
538 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
539 |
|
dec->width, dec->height, dec->interlacing); |
540 |
stop_edges_timer(); |
stop_edges_timer(); |
541 |
|
|
542 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
543 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
544 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
545 |
|
|
546 |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
560 |
|
|
561 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
562 |
|
|
563 |
if (intra) |
if (intra) { |
|
{ |
|
564 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
565 |
} |
} |
566 |
|
|
567 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
568 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
569 |
continue; |
continue; |
570 |
} |
} |
572 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
573 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
574 |
|
|
575 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
|
{ |
|
576 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
577 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
578 |
quant = 31; |
quant = 31; |
579 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
580 |
quant = 1; |
quant = 1; |
581 |
} |
} |
582 |
} |
} |
583 |
mb->quant = quant; |
mb->quant = quant; |
584 |
|
|
585 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
586 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
587 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
588 |
|
|
589 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
590 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
591 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
592 |
|
|
593 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
594 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
595 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
596 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
599 |
} |
} |
600 |
} |
} |
601 |
|
|
602 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
603 |
{ |
if (dec->interlacing && mb->field_pred) { |
604 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
605 |
{ |
fcode); |
606 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
607 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
fcode); |
608 |
} |
} else { |
609 |
else |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
610 |
{ |
fcode); |
611 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
612 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[0].x; |
613 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
614 |
} |
mb->mvs[0].y; |
615 |
} |
} |
616 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
} else if (mb->mode == |
617 |
{ |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
618 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
619 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
620 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
621 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
622 |
} |
} else // MODE_INTRA, MODE_INTRA_Q |
|
else // MODE_INTRA, MODE_INTRA_Q |
|
623 |
{ |
{ |
624 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
625 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
0; |
626 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
627 |
|
0; |
628 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
629 |
|
intra_dc_threshold); |
630 |
continue; |
continue; |
631 |
} |
} |
632 |
|
|
633 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
634 |
} |
rounding); |
635 |
else // not coded |
} else // not coded |
636 |
{ |
{ |
637 |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
638 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
643 |
|
|
644 |
start_timer(); |
start_timer(); |
645 |
|
|
646 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
647 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
648 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
649 |
|
(16 * x), dec->edged_width); |
650 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
651 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
652 |
dec->edged_width); |
(16 * x + 8), |
653 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
654 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
655 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), |
|
656 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
657 |
|
(16 * x), |
658 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
659 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
660 |
dec->edged_width); |
(16 * x), dec->edged_width); |
661 |
|
|
662 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
663 |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
664 |
|
dec->refn[0].y + (16 * y + |
665 |
|
8) * dec->edged_width + |
666 |
|
(16 * x + 8), dec->edged_width); |
667 |
|
|
668 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
669 |
|
(8 * x), |
670 |
|
dec->refn[0].u + |
671 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
672 |
dec->edged_width/2); |
dec->edged_width/2); |
673 |
|
|
674 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
675 |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
676 |
|
dec->refn[0].v + |
677 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
678 |
dec->edged_width/2); |
dec->edged_width/2); |
679 |
|
|
680 |
stop_transfer_timer(); |
stop_transfer_timer(); |
686 |
|
|
687 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
688 |
// decode B-frame motion vector |
// decode B-frame motion vector |
689 |
void get_b_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, VECTOR * mv, int fcode, const VECTOR pmv) |
void |
690 |
|
get_b_motion_vector(DECODER * dec, |
691 |
|
Bitstream * bs, |
692 |
|
int x, |
693 |
|
int y, |
694 |
|
VECTOR * mv, |
695 |
|
int fcode, |
696 |
|
const VECTOR pmv) |
697 |
{ |
{ |
698 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
699 |
int high = (32 * scale_fac) - 1; |
int high = (32 * scale_fac) - 1; |
712 |
mv_x += pmv_x; |
mv_x += pmv_x; |
713 |
mv_y += pmv_y; |
mv_y += pmv_y; |
714 |
|
|
715 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
716 |
mv_x += range; |
mv_x += range; |
717 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
718 |
mv_x -= range; |
mv_x -= range; |
719 |
} |
} |
720 |
|
|
721 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
722 |
mv_y += range; |
mv_y += range; |
723 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
724 |
mv_y -= range; |
mv_y -= range; |
725 |
} |
} |
726 |
|
|
731 |
|
|
732 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
733 |
// decode an B-frame forward & backward inter macroblock |
// decode an B-frame forward & backward inter macroblock |
734 |
void decoder_bf_mbinter(DECODER * dec, |
void |
735 |
|
decoder_bf_mbinter(DECODER * dec, |
736 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
737 |
const uint32_t x_pos, |
const uint32_t x_pos, |
738 |
const uint32_t y_pos, |
const uint32_t y_pos, |
757 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
758 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
759 |
|
|
760 |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
761 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
762 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
763 |
|
|
764 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
765 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
766 |
} |
} else { |
|
else |
|
|
{ |
|
767 |
int sum; |
int sum; |
768 |
|
|
769 |
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; |
770 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
771 |
|
(sum == |
772 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
773 |
|
(ABS(sum) / 16) * 2)); |
774 |
|
|
775 |
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; |
776 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
777 |
|
(sum == |
778 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
779 |
|
(ABS(sum) / 16) * 2)); |
780 |
} |
} |
781 |
|
|
782 |
start_timer(); |
start_timer(); |
783 |
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, 16 * y_pos, |
784 |
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); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
785 |
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, |
786 |
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); |
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
787 |
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.y, dec->refn[ref].y, 16 * x_pos, |
788 |
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
789 |
|
0); |
790 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
791 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
792 |
|
0); |
793 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
794 |
|
uv_dx, uv_dy, stride2, 0); |
795 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
796 |
|
uv_dx, uv_dy, stride2, 0); |
797 |
stop_comp_timer(); |
stop_comp_timer(); |
798 |
|
|
799 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
800 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
801 |
{ |
{ |
802 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
806 |
stop_coding_timer(); |
stop_coding_timer(); |
807 |
|
|
808 |
start_timer(); |
start_timer(); |
809 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
810 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
811 |
} |
} else { |
|
else |
|
|
{ |
|
812 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
813 |
} |
} |
814 |
stop_iquant_timer(); |
stop_iquant_timer(); |
819 |
} |
} |
820 |
} |
} |
821 |
|
|
822 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
823 |
next_block = stride; |
next_block = stride; |
824 |
stride *= 2; |
stride *= 2; |
825 |
} |
} |
843 |
|
|
844 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
845 |
// decode an B-frame direct & inter macroblock |
// decode an B-frame direct & inter macroblock |
846 |
void decoder_bf_interpolate_mbinter(DECODER * dec, |
void |
847 |
IMAGE forward, IMAGE backward, |
decoder_bf_interpolate_mbinter(DECODER * dec, |
848 |
|
IMAGE forward, |
849 |
|
IMAGE backward, |
850 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
851 |
const uint32_t x_pos, |
const uint32_t x_pos, |
852 |
const uint32_t y_pos, |
const uint32_t y_pos, |
870 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
871 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
872 |
|
|
873 |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
874 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
875 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
876 |
|
|
882 |
|
|
883 |
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
884 |
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
885 |
} |
} else { |
|
else |
|
|
{ |
|
886 |
int sum; |
int sum; |
887 |
|
|
888 |
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; |
889 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
890 |
|
(sum == |
891 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
892 |
|
(ABS(sum) / 16) * 2)); |
893 |
|
|
894 |
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; |
895 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
896 |
|
(sum == |
897 |
sum = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; |
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
898 |
b_uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
(ABS(sum) / 16) * 2)); |
899 |
|
|
900 |
sum = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
sum = |
901 |
b_uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
902 |
} |
pMB->b_mvs[3].x; |
903 |
|
b_uv_dx = |
904 |
|
(sum == |
905 |
start_timer(); |
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
906 |
interpolate8x8_switch(dec->cur.y, forward.y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
(ABS(sum) / 16) * 2)); |
907 |
interpolate8x8_switch(dec->cur.y, forward.y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
908 |
interpolate8x8_switch(dec->cur.y, forward.y, 16*x_pos, 16*y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
sum = |
909 |
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); |
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
910 |
interpolate8x8_switch(dec->cur.u, forward.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
pMB->b_mvs[3].y; |
911 |
interpolate8x8_switch(dec->cur.v, forward.v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
b_uv_dy = |
912 |
|
(sum == |
913 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
914 |
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); |
(ABS(sum) / 16) * 2)); |
915 |
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); |
} |
916 |
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); |
|
917 |
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); |
|
918 |
interpolate8x8_switch(dec->refn[2].u, backward.u, 8*x_pos, 8*y_pos, b_uv_dx, b_uv_dy, stride2, 0); |
start_timer(); |
919 |
interpolate8x8_switch(dec->refn[2].v, backward.v, 8*x_pos, 8*y_pos, b_uv_dx, b_uv_dy, stride2, 0); |
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
920 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
921 |
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16*x_pos, 16*y_pos , stride); |
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
922 |
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16*x_pos + 8, 16*y_pos , stride); |
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
923 |
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16*x_pos, 16*y_pos + 8, stride); |
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
924 |
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16*x_pos + 8, 16*y_pos + 8, stride); |
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
925 |
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8*x_pos, 8*y_pos, stride2); |
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
926 |
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8*x_pos, 8*y_pos, stride2); |
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
927 |
|
0); |
928 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
929 |
|
uv_dy, stride2, 0); |
930 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
931 |
|
uv_dy, stride2, 0); |
932 |
|
|
933 |
|
|
934 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
935 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
936 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
937 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
938 |
|
0); |
939 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
940 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
941 |
|
stride, 0); |
942 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
943 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
944 |
|
stride, 0); |
945 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
946 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
947 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
948 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
949 |
|
|
950 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
951 |
|
stride); |
952 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
953 |
|
stride); |
954 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
955 |
|
stride); |
956 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
957 |
|
16 * y_pos + 8, stride); |
958 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
959 |
|
stride2); |
960 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
961 |
|
stride2); |
962 |
|
|
963 |
stop_comp_timer(); |
stop_comp_timer(); |
964 |
|
|
965 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
966 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
967 |
{ |
{ |
968 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
972 |
stop_coding_timer(); |
stop_coding_timer(); |
973 |
|
|
974 |
start_timer(); |
start_timer(); |
975 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
976 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
977 |
} |
} else { |
|
else |
|
|
{ |
|
978 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
979 |
} |
} |
980 |
stop_iquant_timer(); |
stop_iquant_timer(); |
985 |
} |
} |
986 |
} |
} |
987 |
|
|
988 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
989 |
next_block = stride; |
next_block = stride; |
990 |
stride *= 2; |
stride *= 2; |
991 |
} |
} |
1009 |
|
|
1010 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
1011 |
// for decode B-frame dbquant |
// for decode B-frame dbquant |
1012 |
int32_t __inline get_dbquant(Bitstream * bs) |
int32_t __inline |
1013 |
|
get_dbquant(Bitstream * bs) |
1014 |
{ |
{ |
1015 |
if (!BitstreamGetBit(bs)) // '0' |
if (!BitstreamGetBit(bs)) // '0' |
1016 |
return(0); |
return(0); |
1027 |
// 01 1 |
// 01 1 |
1028 |
// 001 2 |
// 001 2 |
1029 |
// 0001 3 |
// 0001 3 |
1030 |
int32_t __inline get_mbtype(Bitstream * bs) |
int32_t __inline |
1031 |
|
get_mbtype(Bitstream * bs) |
1032 |
{ |
{ |
1033 |
int32_t mb_type; |
int32_t mb_type; |
1034 |
|
|
1035 |
for(mb_type=0;mb_type<=3;mb_type++){ |
for(mb_type=0;mb_type<=3;mb_type++){ |
1036 |
if (BitstreamGetBit(bs)) |
if (BitstreamGetBit(bs)) |
1037 |
break; |
break; |
1043 |
return(-1); |
return(-1); |
1044 |
} |
} |
1045 |
|
|
1046 |
void decoder_bframe(DECODER * dec, Bitstream * bs, int quant, int fcode_forward, int fcode_backward) |
void |
1047 |
|
decoder_bframe(DECODER * dec, |
1048 |
|
Bitstream * bs, |
1049 |
|
int quant, |
1050 |
|
int fcode_forward, |
1051 |
|
int fcode_backward) |
1052 |
{ |
{ |
1053 |
|
|
1054 |
uint32_t x, y; |
uint32_t x, y; |
1055 |
VECTOR mv, zeromv; |
VECTOR mv, zeromv; |
1056 |
|
|
1057 |
start_timer(); |
start_timer(); |
1058 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1059 |
|
dec->width, dec->height, dec->interlacing); |
1060 |
//image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
//image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
1061 |
stop_edges_timer(); |
stop_edges_timer(); |
1062 |
|
|
1063 |
|
|
1064 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
|
{ |
|
1065 |
// Initialize Pred Motion Vector |
// Initialize Pred Motion Vector |
1066 |
dec->p_fmv.x = dec->p_fmv.y = dec->p_bmv.x = dec->p_bmv.y = 0; |
dec->p_fmv.x = dec->p_fmv.y = dec->p_bmv.x = dec->p_bmv.y = 0; |
1067 |
for (x = 0; x < dec->mb_width; x++) |
for (x = 0; x < dec->mb_width; x++) { |
|
{ |
|
1068 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
1069 |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
1070 |
|
|
1071 |
mb->mvs[0].x=mb->mvs[0].y=zeromv.x = zeromv.y = mv.x = mv.y = 0; |
mb->mvs[0].x = mb->mvs[0].y = zeromv.x = zeromv.y = mv.x = mv.y = |
1072 |
|
0; |
1073 |
|
|
1074 |
// the last P_VOP is skip macroblock ? |
// the last P_VOP is skip macroblock ? |
1075 |
if (last_mb->mode == MODE_NOT_CODED){ |
if (last_mb->mode == MODE_NOT_CODED){ |
1083 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1084 |
continue; |
continue; |
1085 |
} |
} |
|
|
|
1086 |
//t=BitstreamShowBits(bs,32); |
//t=BitstreamShowBits(bs,32); |
1087 |
|
|
1088 |
if (!BitstreamGetBit(bs)){ // modb=='0' |
if (!BitstreamGetBit(bs)){ // modb=='0' |
1098 |
if (mb->mb_type && mb->cbp){ |
if (mb->mb_type && mb->cbp){ |
1099 |
quant += get_dbquant(bs); |
quant += get_dbquant(bs); |
1100 |
|
|
1101 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
1102 |
quant = 31; |
quant = 31; |
1103 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
1104 |
quant = 1; |
quant = 1; |
1105 |
} |
} |
1106 |
} else { |
} else { |
1115 |
mb->mode = MODE_INTER; |
mb->mode = MODE_INTER; |
1116 |
//DEBUG1("Switch bm_type=",mb->mb_type); |
//DEBUG1("Switch bm_type=",mb->mb_type); |
1117 |
|
|
1118 |
switch(mb->mb_type) |
switch (mb->mb_type) { |
|
{ |
|
1119 |
case MODE_DIRECT: |
case MODE_DIRECT: |
1120 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], 1, zeromv); |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], 1, zeromv); |
1121 |
|
|
1122 |
case MODE_DIRECT_NONE_MV: |
case MODE_DIRECT_NONE_MV: |
1123 |
{ // Because this file is a C file not C++ so I use '{' to define var |
{ // Because this file is a C file not C++ so I use '{' to define var |
1124 |
const int64_t TRB=dec->time_pp-dec->time_bp, |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1125 |
TRD=dec->time_pp; |
dec->time_pp; |
1126 |
int i; |
int i; |
1127 |
|
|
1128 |
for(i=0;i<4;i++){ |
for(i=0;i<4;i++){ |
1129 |
mb->mvs[i].x = (int32_t)((TRB * last_mb->mvs[i].x)/TRD+mb->mvs[0].x); |
mb->mvs[i].x = |
1130 |
mb->b_mvs[i].x = (int32_t)((mb->mvs[0].x==0)?((TRB-TRD)*last_mb->mvs[i].x)/TRD:mb->mvs[i].x-last_mb->mvs[i].x); |
(int32_t) ((TRB * last_mb->mvs[i].x) / TRD + |
1131 |
mb->mvs[i].y = (int32_t)((TRB * last_mb->mvs[i].y)/TRD+mb->mvs[0].y); |
mb->mvs[0].x); |
1132 |
mb->b_mvs[i].y = (int32_t)((mb->mvs[0].y==0)?((TRB-TRD)*last_mb->mvs[i].y)/TRD:mb->mvs[i].y-last_mb->mvs[i].y); |
mb->b_mvs[i].x = |
1133 |
|
(int32_t) ((mb->mvs[0].x == |
1134 |
|
0) ? ((TRB - |
1135 |
|
TRD) * last_mb->mvs[i].x) / |
1136 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1137 |
|
mb->mvs[i].y = |
1138 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1139 |
|
mb->mvs[0].y); |
1140 |
|
mb->b_mvs[i].y = |
1141 |
|
(int32_t) ((mb->mvs[0].y == |
1142 |
|
0) ? ((TRB - |
1143 |
|
TRD) * last_mb->mvs[i].y) / |
1144 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1145 |
} |
} |
1146 |
//DEBUG("B-frame Direct!\n"); |
//DEBUG("B-frame Direct!\n"); |
1147 |
} |
} |
1148 |
mb->mode = MODE_INTER4V; |
mb->mode = MODE_INTER4V; |
1149 |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], mb, x, y, mb->cbp, bs); |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1150 |
|
mb, x, y, mb->cbp, bs); |
1151 |
break; |
break; |
1152 |
|
|
1153 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
1154 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, dec->p_fmv); |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1155 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1156 |
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1157 |
|
mb->mvs[0].x; |
1158 |
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], fcode_backward, dec->p_bmv); |
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1159 |
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = mb->b_mvs[3].x = mb->b_mvs[0].x; |
mb->mvs[0].y; |
1160 |
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = mb->b_mvs[3].y = mb->b_mvs[0].y; |
|
1161 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1162 |
|
fcode_backward, dec->p_bmv); |
1163 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1164 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1165 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1166 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1167 |
|
|
1168 |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], mb, x, y, mb->cbp, bs); |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1169 |
|
mb, x, y, mb->cbp, bs); |
1170 |
//DEBUG("B-frame Bidir!\n"); |
//DEBUG("B-frame Bidir!\n"); |
1171 |
break; |
break; |
1172 |
|
|
1173 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
1174 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, dec->p_bmv); |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1175 |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_bmv); |
1176 |
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1177 |
|
mb->mvs[0].x; |
1178 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1179 |
|
mb->mvs[0].y; |
1180 |
|
|
1181 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1182 |
//DEBUG("B-frame Backward!\n"); |
//DEBUG("B-frame Backward!\n"); |
1183 |
break; |
break; |
1184 |
|
|
1185 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1186 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, dec->p_fmv); |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1187 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1188 |
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1189 |
|
mb->mvs[0].x; |
1190 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1191 |
|
mb->mvs[0].y; |
1192 |
|
|
1193 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1194 |
//DEBUG("B-frame Forward!\n"); |
//DEBUG("B-frame Forward!\n"); |
1203 |
} |
} |
1204 |
|
|
1205 |
// swap two MACROBLOCK array |
// swap two MACROBLOCK array |
1206 |
void mb_swap(MACROBLOCK **mb1, MACROBLOCK **mb2) |
void |
1207 |
|
mb_swap(MACROBLOCK ** mb1, |
1208 |
|
MACROBLOCK ** mb2) |
1209 |
{ |
{ |
1210 |
MACROBLOCK *temp=*mb1; |
MACROBLOCK *temp=*mb1; |
1211 |
|
|
1212 |
*mb1=*mb2; |
*mb1=*mb2; |
1213 |
*mb2=temp; |
*mb2=temp; |
1214 |
} |
} |
1215 |
|
|
1216 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
int |
1217 |
|
decoder_decode(DECODER * dec, |
1218 |
|
XVID_DEC_FRAME * frame) |
1219 |
{ |
{ |
1220 |
|
|
1221 |
Bitstream bs; |
Bitstream bs; |
1233 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1234 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
1235 |
dec->frames ++; |
dec->frames ++; |
1236 |
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold); |
vop_type = |
1237 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1238 |
|
&fcode_backward, &intra_dc_threshold); |
1239 |
|
|
1240 |
dec->p_bmv.x=dec->p_bmv.y=dec->p_fmv.y=dec->p_fmv.y=0; // init pred vector to 0 |
dec->p_bmv.x=dec->p_bmv.y=dec->p_fmv.y=dec->p_fmv.y=0; // init pred vector to 0 |
1241 |
switch (vop_type) |
|
1242 |
{ |
switch (vop_type) { |
1243 |
case P_VOP : |
case P_VOP : |
1244 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1245 |
|
intra_dc_threshold); |
1246 |
DEBUG1("P_VOP Time=",dec->time); |
DEBUG1("P_VOP Time=",dec->time); |
1247 |
break; |
break; |
1248 |
|
|
1252 |
break; |
break; |
1253 |
|
|
1254 |
case B_VOP : |
case B_VOP : |
1255 |
|
#ifdef BFRAMES_DEC |
1256 |
if (dec->time_pp > dec->time_bp){ |
if (dec->time_pp > dec->time_bp){ |
1257 |
DEBUG1("B_VOP Time=",dec->time); |
DEBUG1("B_VOP Time=",dec->time); |
1258 |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1259 |
} else { |
} else { |
1260 |
DEBUG("broken B-frame!"); |
DEBUG("broken B-frame!"); |
1261 |
} |
} |
1262 |
|
#else |
1263 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1264 |
|
#endif |
1265 |
break; |
break; |
1266 |
|
|
1267 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1268 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1269 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1270 |
break; |
break; |
1271 |
|
|
1272 |
default : |
default : |
1275 |
|
|
1276 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1277 |
|
|
1278 |
|
#ifdef BFRAMES_DEC |
1279 |
// test if no B_VOP |
// test if no B_VOP |
1280 |
if (dec->low_delay){ |
if (dec->low_delay){ |
1281 |
|
#endif |
1282 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1283 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1284 |
|
#ifdef BFRAMES_DEC |
1285 |
} else { |
} else { |
1286 |
if (dec->frames >= 1){ |
if (dec->frames >= 1){ |
1287 |
start_timer(); |
start_timer(); |
1288 |
if ((vop_type == I_VOP || vop_type == P_VOP)) |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1289 |
{ |
image_output(&dec->refn[0], dec->width, dec->height, |
1290 |
image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, |
dec->edged_width, frame->image, frame->stride, |
1291 |
frame->image, frame->stride, frame->colorspace); |
frame->colorspace); |
1292 |
} else if (vop_type == B_VOP) { |
} else if (vop_type == B_VOP) { |
1293 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, |
1294 |
frame->image, frame->stride, frame->colorspace); |
dec->edged_width, frame->image, frame->stride, |
1295 |
|
frame->colorspace); |
1296 |
} |
} |
1297 |
stop_conv_timer(); |
stop_conv_timer(); |
1298 |
} |
} |
1299 |
} |
} |
1300 |
|
#endif |
1301 |
|
|
1302 |
if (vop_type==I_VOP || vop_type==P_VOP){ |
if (vop_type==I_VOP || vop_type==P_VOP){ |
1303 |
image_swap(&dec->refn[0], &dec->refn[1]); |
image_swap(&dec->refn[0], &dec->refn[1]); |
1304 |
image_swap(&dec->cur, &dec->refn[0]); |
image_swap(&dec->cur, &dec->refn[0]); |