32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 10.07.2002 added BFRAMES_DEC_DEBUG support |
36 |
|
* Fix a little bug for low_delay flage |
37 |
|
* MinChen <chenm001@163.com> |
38 |
|
* 28.06.2002 added basic resync support to iframe/pframe_decode() |
39 |
|
* 22.06.2002 added primative N_VOP support |
40 |
|
* #define BFRAMES_DEC now enables Minchen's bframe decoder |
41 |
* 08.05.2002 add low_delay support for B_VOP decode |
* 08.05.2002 add low_delay support for B_VOP decode |
42 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
43 |
* 05.05.2002 fix some B-frame decode problem |
* 05.05.2002 fix some B-frame decode problem |
53 |
* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
54 |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
55 |
* |
* |
56 |
* $Id: decoder.c,v 1.17 2002-05-09 00:15:51 chenm001 Exp $ |
* $Id: decoder.c,v 1.28 2002-07-12 00:49:59 chenm001 Exp $ |
57 |
* |
* |
58 |
*************************************************************************/ |
*************************************************************************/ |
59 |
|
|
60 |
#include <stdlib.h> |
#include <stdlib.h> |
61 |
#include <string.h> |
#include <string.h> |
62 |
|
|
63 |
|
#ifdef BFRAMES_DEC_DEBUG |
64 |
|
#define BFRAMES_DEC |
65 |
|
#endif |
66 |
|
|
67 |
#include "xvid.h" |
#include "xvid.h" |
68 |
#include "portab.h" |
#include "portab.h" |
69 |
|
|
87 |
#include "image/colorspace.h" |
#include "image/colorspace.h" |
88 |
#include "utils/mem_align.h" |
#include "utils/mem_align.h" |
89 |
|
|
90 |
int decoder_create(XVID_DEC_PARAM * param) |
int |
91 |
|
decoder_create(XVID_DEC_PARAM * param) |
92 |
{ |
{ |
93 |
DECODER * dec; |
DECODER * dec; |
94 |
|
|
95 |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
96 |
if (dec == NULL) |
if (dec == NULL) { |
|
{ |
|
97 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
98 |
} |
} |
99 |
param->handle = dec; |
param->handle = dec; |
106 |
|
|
107 |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
108 |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
109 |
|
dec->low_delay = 0; |
110 |
|
|
111 |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
|
{ |
|
112 |
xvid_free(dec); |
xvid_free(dec); |
113 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
114 |
} |
} |
115 |
|
|
116 |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
|
{ |
|
117 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
118 |
xvid_free(dec); |
xvid_free(dec); |
119 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
120 |
} |
} |
121 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
122 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
123 |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
|
{ |
|
124 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
125 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
126 |
xvid_free(dec); |
xvid_free(dec); |
127 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
128 |
} |
} |
129 |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
|
{ |
|
130 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
131 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
132 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
134 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
135 |
} |
} |
136 |
|
|
137 |
dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->mbs = |
138 |
if (dec->mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
139 |
{ |
CACHE_LINE); |
140 |
|
if (dec->mbs == NULL) { |
141 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
142 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
143 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
145 |
xvid_free(dec); |
xvid_free(dec); |
146 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
147 |
} |
} |
148 |
|
|
149 |
|
memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
150 |
|
|
151 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
152 |
// for skip MB flag |
// for skip MB flag |
153 |
dec->last_mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->last_mbs = |
154 |
if (dec->last_mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
155 |
{ |
CACHE_LINE); |
156 |
|
if (dec->last_mbs == NULL) { |
157 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
158 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
159 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
163 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
164 |
} |
} |
165 |
|
|
166 |
|
memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
167 |
|
|
168 |
init_timer(); |
init_timer(); |
169 |
|
|
170 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
176 |
} |
} |
177 |
|
|
178 |
|
|
179 |
int decoder_destroy(DECODER * dec) |
int |
180 |
|
decoder_destroy(DECODER * dec) |
181 |
{ |
{ |
182 |
xvid_free(dec->last_mbs); |
xvid_free(dec->last_mbs); |
183 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
193 |
|
|
194 |
|
|
195 |
|
|
196 |
static const int32_t dquant_table[4] = |
static const int32_t dquant_table[4] = { |
|
{ |
|
197 |
-1, -2, 1, 2 |
-1, -2, 1, 2 |
198 |
}; |
}; |
199 |
|
|
202 |
|
|
203 |
// decode an intra macroblock |
// decode an intra macroblock |
204 |
|
|
205 |
void decoder_mbintra(DECODER * dec, |
void |
206 |
|
decoder_mbintra(DECODER * dec, |
207 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
208 |
const uint32_t x_pos, |
const uint32_t x_pos, |
209 |
const uint32_t y_pos, |
const uint32_t y_pos, |
211 |
const uint32_t cbp, |
const uint32_t cbp, |
212 |
Bitstream * bs, |
Bitstream * bs, |
213 |
const uint32_t quant, |
const uint32_t quant, |
214 |
const uint32_t intra_dc_threshold) |
const uint32_t intra_dc_threshold, |
215 |
|
const unsigned int bound) |
216 |
{ |
{ |
217 |
|
|
218 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
231 |
|
|
232 |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
233 |
|
|
234 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
235 |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
236 |
int16_t predictors[8]; |
int16_t predictors[8]; |
237 |
int start_coeff; |
int start_coeff; |
238 |
|
|
239 |
start_timer(); |
start_timer(); |
240 |
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], |
241 |
if (!acpred_flag) |
iQuant, iDcScaler, predictors, bound); |
242 |
{ |
if (!acpred_flag) { |
243 |
pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
244 |
} |
} |
245 |
stop_prediction_timer(); |
stop_prediction_timer(); |
246 |
|
|
247 |
if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) { |
|
{ |
|
248 |
int dc_size; |
int dc_size; |
249 |
int dc_dif; |
int dc_dif; |
250 |
|
|
251 |
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); |
252 |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
253 |
|
|
254 |
if (dc_size > 8) |
if (dc_size > 8) { |
|
{ |
|
255 |
BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
256 |
} |
} |
257 |
|
|
258 |
block[i*64 + 0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
259 |
start_coeff = 1; |
start_coeff = 1; |
260 |
} |
|
261 |
else |
DPRINTF(DPRINTF_COEFF,"block[0] %i", dc_dif); |
262 |
{ |
} else { |
263 |
start_coeff = 0; |
start_coeff = 0; |
264 |
} |
} |
265 |
|
|
266 |
start_timer(); |
start_timer(); |
267 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
268 |
{ |
{ |
269 |
get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
270 |
|
start_coeff); |
271 |
} |
} |
272 |
stop_coding_timer(); |
stop_coding_timer(); |
273 |
|
|
276 |
stop_prediction_timer(); |
stop_prediction_timer(); |
277 |
|
|
278 |
start_timer(); |
start_timer(); |
279 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
280 |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
281 |
} |
} else { |
|
else |
|
|
{ |
|
282 |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
283 |
} |
} |
284 |
stop_iquant_timer(); |
stop_iquant_timer(); |
288 |
stop_idct_timer(); |
stop_idct_timer(); |
289 |
} |
} |
290 |
|
|
291 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
292 |
next_block = stride; |
next_block = stride; |
293 |
stride *= 2; |
stride *= 2; |
294 |
} |
} |
315 |
|
|
316 |
// decode an inter macroblock |
// decode an inter macroblock |
317 |
|
|
318 |
void decoder_mbinter(DECODER * dec, |
void |
319 |
|
decoder_mbinter(DECODER * dec, |
320 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
321 |
const uint32_t x_pos, |
const uint32_t x_pos, |
322 |
const uint32_t y_pos, |
const uint32_t y_pos, |
342 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
343 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
344 |
|
|
345 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
|
{ |
|
346 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
347 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
348 |
|
|
349 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
350 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
351 |
} |
} else { |
|
else |
|
|
{ |
|
352 |
int sum; |
int sum; |
353 |
|
|
354 |
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; |
355 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
356 |
|
(sum == |
357 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
358 |
|
(ABS(sum) / 16) * 2)); |
359 |
|
|
360 |
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; |
361 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
362 |
|
(sum == |
363 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
364 |
|
(ABS(sum) / 16) * 2)); |
365 |
} |
} |
366 |
|
|
367 |
start_timer(); |
start_timer(); |
368 |
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, |
369 |
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); |
370 |
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, |
371 |
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, |
372 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
373 |
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, |
374 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
375 |
|
rounding); |
376 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
377 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
378 |
|
rounding); |
379 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
380 |
|
uv_dx, uv_dy, stride2, rounding); |
381 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
382 |
|
uv_dx, uv_dy, stride2, rounding); |
383 |
stop_comp_timer(); |
stop_comp_timer(); |
384 |
|
|
385 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
386 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
387 |
{ |
{ |
388 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
392 |
stop_coding_timer(); |
stop_coding_timer(); |
393 |
|
|
394 |
start_timer(); |
start_timer(); |
395 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
396 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
397 |
} |
} else { |
|
else |
|
|
{ |
|
398 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
399 |
} |
} |
400 |
stop_iquant_timer(); |
stop_iquant_timer(); |
405 |
} |
} |
406 |
} |
} |
407 |
|
|
408 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
409 |
next_block = stride; |
next_block = stride; |
410 |
stride *= 2; |
stride *= 2; |
411 |
} |
} |
427 |
} |
} |
428 |
|
|
429 |
|
|
430 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
431 |
|
decoder_iframe(DECODER * dec, |
432 |
|
Bitstream * bs, |
433 |
|
int quant, |
434 |
|
int intra_dc_threshold) |
435 |
{ |
{ |
436 |
|
uint32_t bound; |
437 |
uint32_t x, y; |
uint32_t x, y; |
438 |
|
|
439 |
for (y = 0; y < dec->mb_height; y++) |
bound = 0; |
|
{ |
|
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
|
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
|
440 |
|
|
441 |
|
for (y = 0; y < dec->mb_height; y++) { |
442 |
|
for (x = 0; x < dec->mb_width; x++) { |
443 |
|
MACROBLOCK *mb; |
444 |
uint32_t mcbpc; |
uint32_t mcbpc; |
445 |
uint32_t cbpc; |
uint32_t cbpc; |
446 |
uint32_t acpred_flag; |
uint32_t acpred_flag; |
447 |
uint32_t cbpy; |
uint32_t cbpy; |
448 |
uint32_t cbp; |
uint32_t cbp; |
449 |
|
|
450 |
|
while (BitstreamShowBits(bs, 9) == 1) |
451 |
|
BitstreamSkip(bs, 9); |
452 |
|
|
453 |
|
if (check_resync_marker(bs, 0)) |
454 |
|
{ |
455 |
|
bound = read_video_packet_header(bs, 0, &quant); |
456 |
|
x = bound % dec->mb_width; |
457 |
|
y = bound / dec->mb_width; |
458 |
|
} |
459 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
460 |
|
|
461 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
462 |
|
|
463 |
mcbpc = get_mcbpc_intra(bs); |
mcbpc = get_mcbpc_intra(bs); |
464 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
465 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
466 |
|
|
467 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
468 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
469 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
470 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
471 |
|
|
472 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
473 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
474 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
475 |
quant = 31; |
quant = 31; |
476 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
477 |
quant = 1; |
quant = 1; |
478 |
} |
} |
479 |
} |
} |
480 |
mb->quant = quant; |
mb->quant = quant; |
481 |
|
|
482 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
483 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
484 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
485 |
} |
} |
486 |
|
|
487 |
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, |
488 |
|
intra_dc_threshold, bound); |
489 |
} |
} |
490 |
} |
} |
491 |
|
|
492 |
} |
} |
493 |
|
|
494 |
|
|
495 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
496 |
|
get_motion_vector(DECODER * dec, |
497 |
|
Bitstream * bs, |
498 |
|
int x, |
499 |
|
int y, |
500 |
|
int k, |
501 |
|
VECTOR * mv, |
502 |
|
int fcode, |
503 |
|
const int bound) |
504 |
{ |
{ |
505 |
|
|
506 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
508 |
int low = ((-32) * scale_fac); |
int low = ((-32) * scale_fac); |
509 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
510 |
|
|
511 |
VECTOR pmv[4]; |
VECTOR pmv; |
|
int32_t psad[4]; |
|
|
|
|
512 |
int mv_x, mv_y; |
int mv_x, mv_y; |
|
int pmv_x, pmv_y; |
|
|
|
|
513 |
|
|
514 |
get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); |
pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
|
|
|
|
pmv_x = pmv[0].x; |
|
|
pmv_y = pmv[0].y; |
|
515 |
|
|
516 |
mv_x = get_mv(bs, fcode); |
mv_x = get_mv(bs, fcode); |
517 |
mv_y = get_mv(bs, fcode); |
mv_y = get_mv(bs, fcode); |
518 |
|
|
519 |
mv_x += pmv_x; |
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv.x, pmv.y); |
|
mv_y += pmv_y; |
|
520 |
|
|
521 |
if (mv_x < low) |
mv_x += pmv.x; |
522 |
{ |
mv_y += pmv.y; |
523 |
|
|
524 |
|
if (mv_x < low) { |
525 |
mv_x += range; |
mv_x += range; |
526 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
527 |
mv_x -= range; |
mv_x -= range; |
528 |
} |
} |
529 |
|
|
530 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
531 |
mv_y += range; |
mv_y += range; |
532 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
533 |
mv_y -= range; |
mv_y -= range; |
534 |
} |
} |
535 |
|
|
539 |
} |
} |
540 |
|
|
541 |
|
|
542 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
543 |
|
decoder_pframe(DECODER * dec, |
544 |
|
Bitstream * bs, |
545 |
|
int rounding, |
546 |
|
int quant, |
547 |
|
int fcode, |
548 |
|
int intra_dc_threshold) |
549 |
{ |
{ |
550 |
|
|
551 |
uint32_t x, y; |
uint32_t x, y; |
552 |
|
uint32_t bound; |
553 |
|
|
554 |
start_timer(); |
start_timer(); |
555 |
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, |
556 |
|
dec->width, dec->height, dec->interlacing); |
557 |
stop_edges_timer(); |
stop_edges_timer(); |
558 |
|
|
559 |
for (y = 0; y < dec->mb_height; y++) |
bound = 0; |
560 |
{ |
|
561 |
for (x = 0; x < dec->mb_width; x++) |
for (y = 0; y < dec->mb_height; y++) { |
562 |
|
for (x = 0; x < dec->mb_width; x++) { |
563 |
|
MACROBLOCK *mb; |
564 |
|
|
565 |
|
// skip stuffing |
566 |
|
while (BitstreamShowBits(bs, 10) == 1) |
567 |
|
BitstreamSkip(bs, 10); |
568 |
|
|
569 |
|
if (check_resync_marker(bs, fcode - 1)) |
570 |
{ |
{ |
571 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
bound = read_video_packet_header(bs, fcode - 1, &quant); |
572 |
|
x = bound % dec->mb_width; |
573 |
|
y = bound / dec->mb_width; |
574 |
|
} |
575 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
576 |
|
|
577 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
578 |
|
|
579 |
//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 |
580 |
if (!(BitstreamGetBit(bs))) // not_coded |
if (!(BitstreamGetBit(bs))) // not_coded |
589 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
590 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
591 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
592 |
|
|
593 |
|
DPRINTF(DPRINTF_MB, "mode %i", mb->mode); |
594 |
|
DPRINTF(DPRINTF_MB, "cbpc %i", cbpc); |
595 |
acpred_flag = 0; |
acpred_flag = 0; |
596 |
|
|
597 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
598 |
|
|
599 |
if (intra) |
if (intra) { |
|
{ |
|
600 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
601 |
} |
} |
602 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
603 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
604 |
|
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
605 |
|
|
606 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
607 |
|
|
608 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
609 |
{ |
int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
610 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
DPRINTF(DPRINTF_MB, "dquant %i", dquant); |
611 |
if (quant > 31) |
quant += dquant; |
612 |
{ |
if (quant > 31) { |
613 |
quant = 31; |
quant = 31; |
614 |
} |
} else if (quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
615 |
quant = 1; |
quant = 1; |
616 |
} |
} |
617 |
|
DPRINTF(DPRINTF_MB, "quant %i", quant); |
618 |
} |
} |
619 |
mb->quant = quant; |
mb->quant = quant; |
620 |
|
|
621 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
622 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
623 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
624 |
|
|
625 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
626 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
627 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
628 |
|
|
629 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
630 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
631 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
632 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
635 |
} |
} |
636 |
} |
} |
637 |
|
|
638 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
639 |
{ |
if (dec->interlacing && mb->field_pred) { |
640 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
641 |
{ |
fcode, bound); |
642 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
643 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
fcode, bound); |
644 |
} |
} else { |
645 |
else |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
646 |
{ |
fcode, bound); |
647 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
648 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[0].x; |
649 |
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 = |
650 |
} |
mb->mvs[0].y; |
651 |
} |
} |
652 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
} else if (mb->mode == |
653 |
{ |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
654 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
655 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
656 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
657 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
658 |
} |
} else // MODE_INTRA, MODE_INTRA_Q |
659 |
else // MODE_INTRA, MODE_INTRA_Q |
{ |
660 |
{ |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
661 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
0; |
662 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
663 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
0; |
664 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
665 |
|
intra_dc_threshold, bound); |
666 |
continue; |
continue; |
667 |
} |
} |
668 |
|
|
669 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
670 |
} |
rounding); |
671 |
else // not coded |
} else // not coded |
672 |
{ |
{ |
673 |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
674 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
679 |
|
|
680 |
start_timer(); |
start_timer(); |
681 |
|
|
682 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
683 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
684 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
685 |
|
(16 * x), dec->edged_width); |
686 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
687 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
688 |
dec->edged_width); |
(16 * x + 8), |
689 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
690 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
691 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), |
|
692 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
693 |
|
(16 * x), |
694 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
695 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
696 |
dec->edged_width); |
(16 * x), dec->edged_width); |
697 |
|
|
698 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
699 |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
700 |
|
dec->refn[0].y + (16 * y + |
701 |
|
8) * dec->edged_width + |
702 |
|
(16 * x + 8), dec->edged_width); |
703 |
|
|
704 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
705 |
|
(8 * x), |
706 |
|
dec->refn[0].u + |
707 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
708 |
dec->edged_width/2); |
dec->edged_width/2); |
709 |
|
|
710 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
711 |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
712 |
|
dec->refn[0].v + |
713 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
714 |
dec->edged_width/2); |
dec->edged_width/2); |
715 |
|
|
716 |
stop_transfer_timer(); |
stop_transfer_timer(); |
722 |
|
|
723 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
724 |
// decode B-frame motion vector |
// decode B-frame motion vector |
725 |
void get_b_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, VECTOR * mv, int fcode, const VECTOR pmv) |
void |
726 |
|
get_b_motion_vector(DECODER * dec, |
727 |
|
Bitstream * bs, |
728 |
|
int x, |
729 |
|
int y, |
730 |
|
VECTOR * mv, |
731 |
|
int fcode, |
732 |
|
const VECTOR pmv) |
733 |
{ |
{ |
734 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
735 |
int high = (32 * scale_fac) - 1; |
int high = (32 * scale_fac) - 1; |
748 |
mv_x += pmv_x; |
mv_x += pmv_x; |
749 |
mv_y += pmv_y; |
mv_y += pmv_y; |
750 |
|
|
751 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
752 |
mv_x += range; |
mv_x += range; |
753 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
754 |
mv_x -= range; |
mv_x -= range; |
755 |
} |
} |
756 |
|
|
757 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
758 |
mv_y += range; |
mv_y += range; |
759 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
760 |
mv_y -= range; |
mv_y -= range; |
761 |
} |
} |
762 |
|
|
767 |
|
|
768 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
769 |
// decode an B-frame forward & backward inter macroblock |
// decode an B-frame forward & backward inter macroblock |
770 |
void decoder_bf_mbinter(DECODER * dec, |
void |
771 |
|
decoder_bf_mbinter(DECODER * dec, |
772 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
773 |
const uint32_t x_pos, |
const uint32_t x_pos, |
774 |
const uint32_t y_pos, |
const uint32_t y_pos, |
793 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
794 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
795 |
|
|
796 |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
797 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
798 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
799 |
|
|
800 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
801 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
802 |
} |
} else { |
|
else |
|
|
{ |
|
803 |
int sum; |
int sum; |
804 |
|
|
805 |
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; |
806 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
807 |
|
(sum == |
808 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
809 |
|
(ABS(sum) / 16) * 2)); |
810 |
|
|
811 |
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; |
812 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
813 |
|
(sum == |
814 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
815 |
|
(ABS(sum) / 16) * 2)); |
816 |
} |
} |
817 |
|
|
818 |
start_timer(); |
start_timer(); |
819 |
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, |
820 |
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); |
821 |
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, |
822 |
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); |
823 |
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, |
824 |
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, |
825 |
|
0); |
826 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
827 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
828 |
|
0); |
829 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
830 |
|
uv_dx, uv_dy, stride2, 0); |
831 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
832 |
|
uv_dx, uv_dy, stride2, 0); |
833 |
stop_comp_timer(); |
stop_comp_timer(); |
834 |
|
|
835 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
836 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
837 |
{ |
{ |
838 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
842 |
stop_coding_timer(); |
stop_coding_timer(); |
843 |
|
|
844 |
start_timer(); |
start_timer(); |
845 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
846 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
847 |
} |
} else { |
|
else |
|
|
{ |
|
848 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
849 |
} |
} |
850 |
stop_iquant_timer(); |
stop_iquant_timer(); |
855 |
} |
} |
856 |
} |
} |
857 |
|
|
858 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
859 |
next_block = stride; |
next_block = stride; |
860 |
stride *= 2; |
stride *= 2; |
861 |
} |
} |
879 |
|
|
880 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
881 |
// decode an B-frame direct & inter macroblock |
// decode an B-frame direct & inter macroblock |
882 |
void decoder_bf_interpolate_mbinter(DECODER * dec, |
void |
883 |
IMAGE forward, IMAGE backward, |
decoder_bf_interpolate_mbinter(DECODER * dec, |
884 |
|
IMAGE forward, |
885 |
|
IMAGE backward, |
886 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
887 |
const uint32_t x_pos, |
const uint32_t x_pos, |
888 |
const uint32_t y_pos, |
const uint32_t y_pos, |
906 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
907 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
908 |
|
|
909 |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
910 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
911 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
912 |
|
|
918 |
|
|
919 |
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; |
920 |
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; |
921 |
} |
} else { |
|
else |
|
|
{ |
|
922 |
int sum; |
int sum; |
923 |
|
|
924 |
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; |
925 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
926 |
|
(sum == |
927 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
928 |
|
(ABS(sum) / 16) * 2)); |
929 |
|
|
930 |
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; |
931 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
932 |
|
(sum == |
933 |
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] + |
934 |
b_uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
(ABS(sum) / 16) * 2)); |
935 |
|
|
936 |
sum = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
sum = |
937 |
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 + |
938 |
} |
pMB->b_mvs[3].x; |
939 |
|
b_uv_dx = |
940 |
|
(sum == |
941 |
start_timer(); |
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
942 |
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)); |
943 |
interpolate8x8_switch(dec->cur.y, forward.y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
944 |
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 = |
945 |
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 + |
946 |
interpolate8x8_switch(dec->cur.u, forward.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
pMB->b_mvs[3].y; |
947 |
interpolate8x8_switch(dec->cur.v, forward.v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
b_uv_dy = |
948 |
|
(sum == |
949 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
950 |
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)); |
951 |
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); |
} |
952 |
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); |
|
953 |
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); |
|
954 |
interpolate8x8_switch(dec->refn[2].u, backward.u, 8*x_pos, 8*y_pos, b_uv_dx, b_uv_dy, stride2, 0); |
start_timer(); |
955 |
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, |
956 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
957 |
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, |
958 |
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); |
959 |
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, |
960 |
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); |
961 |
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, |
962 |
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, |
963 |
|
0); |
964 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
965 |
|
uv_dy, stride2, 0); |
966 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
967 |
|
uv_dy, stride2, 0); |
968 |
|
|
969 |
|
|
970 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
971 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
972 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
973 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
974 |
|
0); |
975 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
976 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
977 |
|
stride, 0); |
978 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
979 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
980 |
|
stride, 0); |
981 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
982 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
983 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
984 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
985 |
|
|
986 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
987 |
|
stride); |
988 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
989 |
|
stride); |
990 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
991 |
|
stride); |
992 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
993 |
|
16 * y_pos + 8, stride); |
994 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
995 |
|
stride2); |
996 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
997 |
|
stride2); |
998 |
|
|
999 |
stop_comp_timer(); |
stop_comp_timer(); |
1000 |
|
|
1001 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
1002 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
1003 |
{ |
{ |
1004 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
1008 |
stop_coding_timer(); |
stop_coding_timer(); |
1009 |
|
|
1010 |
start_timer(); |
start_timer(); |
1011 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
1012 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
1013 |
} |
} else { |
|
else |
|
|
{ |
|
1014 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
1015 |
} |
} |
1016 |
stop_iquant_timer(); |
stop_iquant_timer(); |
1021 |
} |
} |
1022 |
} |
} |
1023 |
|
|
1024 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
1025 |
next_block = stride; |
next_block = stride; |
1026 |
stride *= 2; |
stride *= 2; |
1027 |
} |
} |
1045 |
|
|
1046 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
1047 |
// for decode B-frame dbquant |
// for decode B-frame dbquant |
1048 |
int32_t __inline get_dbquant(Bitstream * bs) |
int32_t __inline |
1049 |
|
get_dbquant(Bitstream * bs) |
1050 |
{ |
{ |
1051 |
if (!BitstreamGetBit(bs)) // '0' |
if (!BitstreamGetBit(bs)) // '0' |
1052 |
return(0); |
return(0); |
1063 |
// 01 1 |
// 01 1 |
1064 |
// 001 2 |
// 001 2 |
1065 |
// 0001 3 |
// 0001 3 |
1066 |
int32_t __inline get_mbtype(Bitstream * bs) |
int32_t __inline |
1067 |
|
get_mbtype(Bitstream * bs) |
1068 |
{ |
{ |
1069 |
int32_t mb_type; |
int32_t mb_type; |
1070 |
|
|
1071 |
for(mb_type=0;mb_type<=3;mb_type++){ |
for(mb_type=0;mb_type<=3;mb_type++){ |
1072 |
if (BitstreamGetBit(bs)) |
if (BitstreamGetBit(bs)) |
1073 |
break; |
break; |
1079 |
return(-1); |
return(-1); |
1080 |
} |
} |
1081 |
|
|
1082 |
void decoder_bframe(DECODER * dec, Bitstream * bs, int quant, int fcode_forward, int fcode_backward) |
void |
1083 |
|
decoder_bframe(DECODER * dec, |
1084 |
|
Bitstream * bs, |
1085 |
|
int quant, |
1086 |
|
int fcode_forward, |
1087 |
|
int fcode_backward) |
1088 |
{ |
{ |
1089 |
|
|
1090 |
uint32_t x, y; |
uint32_t x, y; |
1091 |
VECTOR mv, zeromv; |
VECTOR mv, zeromv; |
1092 |
|
#ifdef BFRAMES_DEC_DEBUG |
1093 |
|
FILE *fp; |
1094 |
|
static char first=0; |
1095 |
|
#define BFRAME_DEBUG if (!first && fp){ \ |
1096 |
|
fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
1097 |
|
} |
1098 |
|
#endif |
1099 |
|
|
1100 |
start_timer(); |
start_timer(); |
1101 |
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, |
1102 |
|
dec->width, dec->height, dec->interlacing); |
1103 |
//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); |
1104 |
stop_edges_timer(); |
stop_edges_timer(); |
1105 |
|
|
1106 |
|
#ifdef BFRAMES_DEC_DEBUG |
1107 |
|
if (!first){ |
1108 |
|
fp=fopen("C:\\XVIDDBG.TXT","w"); |
1109 |
|
} |
1110 |
|
#endif |
1111 |
|
|
1112 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
|
{ |
|
1113 |
// Initialize Pred Motion Vector |
// Initialize Pred Motion Vector |
1114 |
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; |
1115 |
for (x = 0; x < dec->mb_width; x++) |
for (x = 0; x < dec->mb_width; x++) { |
|
{ |
|
1116 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
1117 |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
1118 |
|
|
1121 |
// the last P_VOP is skip macroblock ? |
// the last P_VOP is skip macroblock ? |
1122 |
if (last_mb->mode == MODE_NOT_CODED){ |
if (last_mb->mode == MODE_NOT_CODED){ |
1123 |
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
1124 |
mb->mb_type = MODE_FORWARD; |
mb->mb_type = MODE_NOT_CODED; |
1125 |
mb->cbp = 0; |
mb->cbp = 0; |
1126 |
|
#ifdef BFRAMES_DEC_DEBUG |
1127 |
|
BFRAME_DEBUG |
1128 |
|
#endif |
1129 |
|
mb->mb_type = MODE_FORWARD; |
1130 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1131 |
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 = mb->mvs[0].y; |
1132 |
mb->quant = 8; |
mb->quant = 8; |
1134 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1135 |
continue; |
continue; |
1136 |
} |
} |
|
|
|
1137 |
//t=BitstreamShowBits(bs,32); |
//t=BitstreamShowBits(bs,32); |
1138 |
|
|
1139 |
if (!BitstreamGetBit(bs)){ // modb=='0' |
if (!BitstreamGetBit(bs)){ // modb=='0' |
1149 |
if (mb->mb_type && mb->cbp){ |
if (mb->mb_type && mb->cbp){ |
1150 |
quant += get_dbquant(bs); |
quant += get_dbquant(bs); |
1151 |
|
|
1152 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
1153 |
quant = 31; |
quant = 31; |
1154 |
} |
} else if (quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
1155 |
quant = 1; |
quant = 1; |
1156 |
} |
} |
1157 |
} else { |
} else { |
1166 |
mb->mode = MODE_INTER; |
mb->mode = MODE_INTER; |
1167 |
//DEBUG1("Switch bm_type=",mb->mb_type); |
//DEBUG1("Switch bm_type=",mb->mb_type); |
1168 |
|
|
1169 |
switch(mb->mb_type) |
#ifdef BFRAMES_DEC_DEBUG |
1170 |
{ |
BFRAME_DEBUG |
1171 |
|
#endif |
1172 |
|
switch (mb->mb_type) { |
1173 |
case MODE_DIRECT: |
case MODE_DIRECT: |
1174 |
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); |
1175 |
|
|
1176 |
case MODE_DIRECT_NONE_MV: |
case MODE_DIRECT_NONE_MV: |
1177 |
{ // 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 |
1178 |
const int64_t TRB=dec->time_pp-dec->time_bp, |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1179 |
TRD=dec->time_pp; |
dec->time_pp; |
1180 |
int i; |
int i; |
1181 |
|
|
1182 |
for(i=0;i<4;i++){ |
for(i=0;i<4;i++){ |
1183 |
mb->mvs[i].x = (int32_t)((TRB * last_mb->mvs[i].x)/TRD+mb->mvs[0].x); |
mb->mvs[i].x = |
1184 |
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 + |
1185 |
mb->mvs[i].y = (int32_t)((TRB * last_mb->mvs[i].y)/TRD+mb->mvs[0].y); |
mb->mvs[0].x); |
1186 |
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 = |
1187 |
|
(int32_t) ((mb->mvs[0].x == |
1188 |
|
0) ? ((TRB - |
1189 |
|
TRD) * last_mb->mvs[i].x) / |
1190 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1191 |
|
mb->mvs[i].y = |
1192 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1193 |
|
mb->mvs[0].y); |
1194 |
|
mb->b_mvs[i].y = |
1195 |
|
(int32_t) ((mb->mvs[0].y == |
1196 |
|
0) ? ((TRB - |
1197 |
|
TRD) * last_mb->mvs[i].y) / |
1198 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1199 |
} |
} |
1200 |
//DEBUG("B-frame Direct!\n"); |
//DEBUG("B-frame Direct!\n"); |
1201 |
} |
} |
1202 |
mb->mode = MODE_INTER4V; |
mb->mode = MODE_INTER4V; |
1203 |
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], |
1204 |
|
mb, x, y, mb->cbp, bs); |
1205 |
break; |
break; |
1206 |
|
|
1207 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
1208 |
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, |
1209 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1210 |
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 = |
1211 |
|
mb->mvs[0].x; |
1212 |
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 = |
1213 |
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; |
1214 |
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = mb->b_mvs[3].y = mb->b_mvs[0].y; |
|
1215 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1216 |
|
fcode_backward, dec->p_bmv); |
1217 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1218 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1219 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1220 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1221 |
|
|
1222 |
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], |
1223 |
|
mb, x, y, mb->cbp, bs); |
1224 |
//DEBUG("B-frame Bidir!\n"); |
//DEBUG("B-frame Bidir!\n"); |
1225 |
break; |
break; |
1226 |
|
|
1227 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
1228 |
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, |
1229 |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_bmv); |
1230 |
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 = |
1231 |
|
mb->mvs[0].x; |
1232 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1233 |
|
mb->mvs[0].y; |
1234 |
|
|
1235 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1236 |
//DEBUG("B-frame Backward!\n"); |
//DEBUG("B-frame Backward!\n"); |
1237 |
break; |
break; |
1238 |
|
|
1239 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1240 |
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, |
1241 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1242 |
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 = |
1243 |
|
mb->mvs[0].x; |
1244 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1245 |
|
mb->mvs[0].y; |
1246 |
|
|
1247 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1248 |
//DEBUG("B-frame Forward!\n"); |
//DEBUG("B-frame Forward!\n"); |
1249 |
break; |
break; |
1250 |
|
|
1251 |
default: |
default: |
1252 |
DEBUG1("Not support B-frame mb_type =",mb->mb_type); |
//DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
1253 |
|
; |
1254 |
} |
} |
1255 |
|
|
1256 |
} // end of FOR |
} // end of FOR |
1257 |
} |
} |
1258 |
|
#ifdef BFRAMES_DEC_DEBUG |
1259 |
|
if (!first){ |
1260 |
|
first=1; |
1261 |
|
if (fp) |
1262 |
|
fclose(fp); |
1263 |
|
} |
1264 |
|
#endif |
1265 |
} |
} |
1266 |
|
|
1267 |
// swap two MACROBLOCK array |
// swap two MACROBLOCK array |
1268 |
void mb_swap(MACROBLOCK **mb1, MACROBLOCK **mb2) |
void |
1269 |
|
mb_swap(MACROBLOCK ** mb1, |
1270 |
|
MACROBLOCK ** mb2) |
1271 |
{ |
{ |
1272 |
MACROBLOCK *temp=*mb1; |
MACROBLOCK *temp=*mb1; |
1273 |
|
|
1274 |
*mb1=*mb2; |
*mb1=*mb2; |
1275 |
*mb2=temp; |
*mb2=temp; |
1276 |
} |
} |
1277 |
|
|
1278 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
int |
1279 |
|
decoder_decode(DECODER * dec, |
1280 |
|
XVID_DEC_FRAME * frame) |
1281 |
{ |
{ |
1282 |
|
|
1283 |
Bitstream bs; |
Bitstream bs; |
1295 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1296 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
1297 |
dec->frames ++; |
dec->frames ++; |
1298 |
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold); |
vop_type = |
1299 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1300 |
|
&fcode_backward, &intra_dc_threshold); |
1301 |
|
|
1302 |
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 |
1303 |
switch (vop_type) |
|
1304 |
{ |
switch (vop_type) { |
1305 |
case P_VOP : |
case P_VOP : |
1306 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1307 |
|
intra_dc_threshold); |
1308 |
|
#ifdef BFRAMES_DEC |
1309 |
DEBUG1("P_VOP Time=",dec->time); |
DEBUG1("P_VOP Time=",dec->time); |
1310 |
|
#endif |
1311 |
break; |
break; |
1312 |
|
|
1313 |
case I_VOP : |
case I_VOP : |
1314 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1315 |
|
#ifdef BFRAMES_DEC |
1316 |
DEBUG1("I_VOP Time=",dec->time); |
DEBUG1("I_VOP Time=",dec->time); |
1317 |
|
#endif |
1318 |
break; |
break; |
1319 |
|
|
1320 |
case B_VOP : |
case B_VOP : |
1321 |
|
#ifdef BFRAMES_DEC |
1322 |
if (dec->time_pp > dec->time_bp){ |
if (dec->time_pp > dec->time_bp){ |
1323 |
DEBUG1("B_VOP Time=",dec->time); |
DEBUG1("B_VOP Time=",dec->time); |
1324 |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1325 |
} else { |
} else { |
1326 |
DEBUG("broken B-frame!"); |
DEBUG("broken B-frame!"); |
1327 |
} |
} |
1328 |
|
#else |
1329 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1330 |
|
#endif |
1331 |
break; |
break; |
1332 |
|
|
1333 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1334 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1335 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1336 |
break; |
break; |
1337 |
|
|
1338 |
default : |
default : |
1339 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
1340 |
} |
} |
1341 |
|
|
1342 |
|
#ifdef BFRAMES_DEC_DEBUG |
1343 |
|
if (frame->length != BitstreamPos(&bs) / 8){ |
1344 |
|
DEBUG2("InLen/UseLen",frame->length, BitstreamPos(&bs) / 8); |
1345 |
|
} |
1346 |
|
#endif |
1347 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1348 |
|
|
1349 |
|
|
1350 |
|
#ifdef BFRAMES_DEC |
1351 |
// test if no B_VOP |
// test if no B_VOP |
1352 |
if (dec->low_delay){ |
if (dec->low_delay){ |
1353 |
|
#endif |
1354 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1355 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1356 |
|
|
1357 |
|
#ifdef BFRAMES_DEC |
1358 |
} else { |
} else { |
1359 |
if (dec->frames >= 1){ |
if (dec->frames >= 0) { |
1360 |
start_timer(); |
start_timer(); |
1361 |
if ((vop_type == I_VOP || vop_type == P_VOP)) |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1362 |
{ |
image_output(&dec->refn[0], dec->width, dec->height, |
1363 |
image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, |
dec->edged_width, frame->image, frame->stride, |
1364 |
frame->image, frame->stride, frame->colorspace); |
frame->colorspace); |
1365 |
} else if (vop_type == B_VOP) { |
} else if (vop_type == B_VOP) { |
1366 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, |
1367 |
frame->image, frame->stride, frame->colorspace); |
dec->edged_width, frame->image, frame->stride, |
1368 |
|
frame->colorspace); |
1369 |
} |
} |
1370 |
stop_conv_timer(); |
stop_conv_timer(); |
1371 |
} |
} |
1372 |
} |
} |
1373 |
|
#endif |
1374 |
|
|
1375 |
if (vop_type==I_VOP || vop_type==P_VOP){ |
if (vop_type==I_VOP || vop_type==P_VOP){ |
1376 |
image_swap(&dec->refn[0], &dec->refn[1]); |
image_swap(&dec->refn[0], &dec->refn[1]); |
1377 |
image_swap(&dec->cur, &dec->refn[0]); |
image_swap(&dec->cur, &dec->refn[0]); |
1378 |
// swap MACROBLOCK |
// swap MACROBLOCK |
1379 |
if (dec->low_delay && vop_type==P_VOP) |
if (!dec->low_delay && vop_type == P_VOP) |
1380 |
mb_swap(&dec->mbs, &dec->last_mbs); |
mb_swap(&dec->mbs, &dec->last_mbs); |
1381 |
} |
} |
1382 |
|
|