32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 08.05.2002 add low_delay support for B_VOP decode |
36 |
|
* MinChen <chenm001@163.com> |
37 |
|
* 05.05.2002 fix some B-frame decode problem |
38 |
* 02.05.2002 add B-frame decode support(have some problem); |
* 02.05.2002 add B-frame decode support(have some problem); |
39 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
40 |
* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
47 |
* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
48 |
* 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> |
49 |
* |
* |
50 |
* $Id: decoder.c,v 1.15 2002-05-06 03:51:43 chenm001 Exp $ |
* $Id: decoder.c,v 1.20 2002-06-14 13:21:13 Isibaar Exp $ |
51 |
* |
* |
52 |
*************************************************************************/ |
*************************************************************************/ |
53 |
|
|
77 |
#include "image/colorspace.h" |
#include "image/colorspace.h" |
78 |
#include "utils/mem_align.h" |
#include "utils/mem_align.h" |
79 |
|
|
80 |
int decoder_create(XVID_DEC_PARAM * param) |
int |
81 |
|
decoder_create(XVID_DEC_PARAM * param) |
82 |
{ |
{ |
83 |
DECODER * dec; |
DECODER * dec; |
84 |
|
|
85 |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
86 |
if (dec == NULL) |
if (dec == NULL) { |
|
{ |
|
87 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
88 |
} |
} |
89 |
param->handle = dec; |
param->handle = dec; |
96 |
|
|
97 |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
98 |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
99 |
|
dec->low_delay = 0; |
100 |
|
|
101 |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
|
{ |
|
102 |
xvid_free(dec); |
xvid_free(dec); |
103 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
104 |
} |
} |
105 |
|
|
106 |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
|
{ |
|
107 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
108 |
xvid_free(dec); |
xvid_free(dec); |
109 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
110 |
} |
} |
111 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
112 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
113 |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
|
{ |
|
114 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
115 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
116 |
xvid_free(dec); |
xvid_free(dec); |
117 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
118 |
} |
} |
119 |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
|
{ |
|
120 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
121 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
122 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
124 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
125 |
} |
} |
126 |
|
|
127 |
dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->mbs = |
128 |
if (dec->mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
129 |
{ |
CACHE_LINE); |
130 |
|
if (dec->mbs == NULL) { |
131 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
132 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
133 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
135 |
xvid_free(dec); |
xvid_free(dec); |
136 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
137 |
} |
} |
138 |
|
|
139 |
|
memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
140 |
|
|
141 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
142 |
// for skip MB flag |
// for skip MB flag |
143 |
dec->last_mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->last_mbs = |
144 |
if (dec->last_mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
145 |
{ |
CACHE_LINE); |
146 |
|
if (dec->last_mbs == NULL) { |
147 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
148 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
149 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
153 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
154 |
} |
} |
155 |
|
|
156 |
|
memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
157 |
|
|
158 |
init_timer(); |
init_timer(); |
159 |
|
|
160 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
166 |
} |
} |
167 |
|
|
168 |
|
|
169 |
int decoder_destroy(DECODER * dec) |
int |
170 |
|
decoder_destroy(DECODER * dec) |
171 |
{ |
{ |
172 |
xvid_free(dec->last_mbs); |
xvid_free(dec->last_mbs); |
173 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
183 |
|
|
184 |
|
|
185 |
|
|
186 |
static const int32_t dquant_table[4] = |
static const int32_t dquant_table[4] = { |
|
{ |
|
187 |
-1, -2, 1, 2 |
-1, -2, 1, 2 |
188 |
}; |
}; |
189 |
|
|
192 |
|
|
193 |
// decode an intra macroblock |
// decode an intra macroblock |
194 |
|
|
195 |
void decoder_mbintra(DECODER * dec, |
void |
196 |
|
decoder_mbintra(DECODER * dec, |
197 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
198 |
const uint32_t x_pos, |
const uint32_t x_pos, |
199 |
const uint32_t y_pos, |
const uint32_t y_pos, |
220 |
|
|
221 |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
222 |
|
|
223 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
224 |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
225 |
int16_t predictors[8]; |
int16_t predictors[8]; |
226 |
int start_coeff; |
int start_coeff; |
227 |
|
|
228 |
start_timer(); |
start_timer(); |
229 |
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], |
230 |
if (!acpred_flag) |
iQuant, iDcScaler, predictors); |
231 |
{ |
if (!acpred_flag) { |
232 |
pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
233 |
} |
} |
234 |
stop_prediction_timer(); |
stop_prediction_timer(); |
235 |
|
|
236 |
if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) { |
|
{ |
|
237 |
int dc_size; |
int dc_size; |
238 |
int dc_dif; |
int dc_dif; |
239 |
|
|
240 |
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); |
241 |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
242 |
|
|
243 |
if (dc_size > 8) |
if (dc_size > 8) { |
|
{ |
|
244 |
BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
245 |
} |
} |
246 |
|
|
247 |
block[i*64 + 0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
248 |
start_coeff = 1; |
start_coeff = 1; |
249 |
} |
} else { |
|
else |
|
|
{ |
|
250 |
start_coeff = 0; |
start_coeff = 0; |
251 |
} |
} |
252 |
|
|
253 |
start_timer(); |
start_timer(); |
254 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
255 |
{ |
{ |
256 |
get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
257 |
|
start_coeff); |
258 |
} |
} |
259 |
stop_coding_timer(); |
stop_coding_timer(); |
260 |
|
|
263 |
stop_prediction_timer(); |
stop_prediction_timer(); |
264 |
|
|
265 |
start_timer(); |
start_timer(); |
266 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
267 |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
268 |
} |
} else { |
|
else |
|
|
{ |
|
269 |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
270 |
} |
} |
271 |
stop_iquant_timer(); |
stop_iquant_timer(); |
275 |
stop_idct_timer(); |
stop_idct_timer(); |
276 |
} |
} |
277 |
|
|
278 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
279 |
next_block = stride; |
next_block = stride; |
280 |
stride *= 2; |
stride *= 2; |
281 |
} |
} |
302 |
|
|
303 |
// decode an inter macroblock |
// decode an inter macroblock |
304 |
|
|
305 |
void decoder_mbinter(DECODER * dec, |
void |
306 |
|
decoder_mbinter(DECODER * dec, |
307 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
308 |
const uint32_t x_pos, |
const uint32_t x_pos, |
309 |
const uint32_t y_pos, |
const uint32_t y_pos, |
329 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
330 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
331 |
|
|
332 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
|
{ |
|
333 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
334 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
335 |
|
|
336 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
337 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
338 |
} |
} else { |
|
else |
|
|
{ |
|
339 |
int sum; |
int sum; |
340 |
|
|
341 |
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; |
342 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
343 |
|
(sum == |
344 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
345 |
|
(ABS(sum) / 16) * 2)); |
346 |
|
|
347 |
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; |
348 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
349 |
|
(sum == |
350 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
351 |
|
(ABS(sum) / 16) * 2)); |
352 |
} |
} |
353 |
|
|
354 |
start_timer(); |
start_timer(); |
355 |
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, |
356 |
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); |
357 |
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, |
358 |
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, |
359 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
360 |
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, |
361 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
362 |
|
rounding); |
363 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
364 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
365 |
|
rounding); |
366 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
367 |
|
uv_dx, uv_dy, stride2, rounding); |
368 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
369 |
|
uv_dx, uv_dy, stride2, rounding); |
370 |
stop_comp_timer(); |
stop_comp_timer(); |
371 |
|
|
372 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
373 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
374 |
{ |
{ |
375 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
379 |
stop_coding_timer(); |
stop_coding_timer(); |
380 |
|
|
381 |
start_timer(); |
start_timer(); |
382 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
383 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
384 |
} |
} else { |
|
else |
|
|
{ |
|
385 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
386 |
} |
} |
387 |
stop_iquant_timer(); |
stop_iquant_timer(); |
392 |
} |
} |
393 |
} |
} |
394 |
|
|
395 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
396 |
next_block = stride; |
next_block = stride; |
397 |
stride *= 2; |
stride *= 2; |
398 |
} |
} |
414 |
} |
} |
415 |
|
|
416 |
|
|
417 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
418 |
|
decoder_iframe(DECODER * dec, |
419 |
|
Bitstream * bs, |
420 |
|
int quant, |
421 |
|
int intra_dc_threshold) |
422 |
{ |
{ |
423 |
|
|
424 |
uint32_t x, y; |
uint32_t x, y; |
425 |
|
|
426 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
427 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
428 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
429 |
|
|
430 |
uint32_t mcbpc; |
uint32_t mcbpc; |
439 |
|
|
440 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
441 |
|
|
442 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
443 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
444 |
continue; |
continue; |
445 |
} |
} |
447 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
448 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
449 |
|
|
450 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
451 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
452 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
453 |
quant = 31; |
quant = 31; |
454 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
455 |
quant = 1; |
quant = 1; |
456 |
} |
} |
457 |
} |
} |
458 |
mb->quant = quant; |
mb->quant = quant; |
459 |
|
|
460 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
461 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
462 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
463 |
} |
} |
464 |
|
|
465 |
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, |
466 |
|
intra_dc_threshold); |
467 |
} |
} |
468 |
} |
} |
469 |
|
|
470 |
} |
} |
471 |
|
|
472 |
|
|
473 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
474 |
|
get_motion_vector(DECODER * dec, |
475 |
|
Bitstream * bs, |
476 |
|
int x, |
477 |
|
int y, |
478 |
|
int k, |
479 |
|
VECTOR * mv, |
480 |
|
int fcode) |
481 |
{ |
{ |
482 |
|
|
483 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
503 |
mv_x += pmv_x; |
mv_x += pmv_x; |
504 |
mv_y += pmv_y; |
mv_y += pmv_y; |
505 |
|
|
506 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
507 |
mv_x += range; |
mv_x += range; |
508 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
509 |
mv_x -= range; |
mv_x -= range; |
510 |
} |
} |
511 |
|
|
512 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
513 |
mv_y += range; |
mv_y += range; |
514 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
515 |
mv_y -= range; |
mv_y -= range; |
516 |
} |
} |
517 |
|
|
521 |
} |
} |
522 |
|
|
523 |
|
|
524 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
525 |
|
decoder_pframe(DECODER * dec, |
526 |
|
Bitstream * bs, |
527 |
|
int rounding, |
528 |
|
int quant, |
529 |
|
int fcode, |
530 |
|
int intra_dc_threshold) |
531 |
{ |
{ |
532 |
|
|
533 |
uint32_t x, y; |
uint32_t x, y; |
534 |
|
|
535 |
start_timer(); |
start_timer(); |
536 |
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, |
537 |
|
dec->width, dec->height, dec->interlacing); |
538 |
stop_edges_timer(); |
stop_edges_timer(); |
539 |
|
|
540 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
541 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
542 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
543 |
|
|
544 |
//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 |
558 |
|
|
559 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
560 |
|
|
561 |
if (intra) |
if (intra) { |
|
{ |
|
562 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
563 |
} |
} |
564 |
|
|
565 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
566 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
567 |
continue; |
continue; |
568 |
} |
} |
570 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
571 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
572 |
|
|
573 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
|
{ |
|
574 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
575 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
576 |
quant = 31; |
quant = 31; |
577 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
578 |
quant = 1; |
quant = 1; |
579 |
} |
} |
580 |
} |
} |
581 |
mb->quant = quant; |
mb->quant = quant; |
582 |
|
|
583 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
584 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
585 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
586 |
|
|
587 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
588 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
589 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
590 |
|
|
591 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
592 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
593 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
594 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
597 |
} |
} |
598 |
} |
} |
599 |
|
|
600 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
601 |
{ |
if (dec->interlacing && mb->field_pred) { |
602 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
603 |
{ |
fcode); |
604 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
605 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
fcode); |
606 |
} |
} else { |
607 |
else |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
608 |
{ |
fcode); |
609 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
610 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[0].x; |
611 |
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 = |
612 |
} |
mb->mvs[0].y; |
613 |
} |
} |
614 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
} else if (mb->mode == |
615 |
{ |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
616 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
617 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
618 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
619 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
620 |
} |
} else // MODE_INTRA, MODE_INTRA_Q |
|
else // MODE_INTRA, MODE_INTRA_Q |
|
621 |
{ |
{ |
622 |
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 = |
623 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
0; |
624 |
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 = |
625 |
|
0; |
626 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
627 |
|
intra_dc_threshold); |
628 |
continue; |
continue; |
629 |
} |
} |
630 |
|
|
631 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
632 |
} |
rounding); |
633 |
else // not coded |
} else // not coded |
634 |
{ |
{ |
635 |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
636 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
641 |
|
|
642 |
start_timer(); |
start_timer(); |
643 |
|
|
644 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
645 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
646 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
647 |
|
(16 * x), dec->edged_width); |
648 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
649 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
650 |
dec->edged_width); |
(16 * x + 8), |
651 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
652 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
653 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), |
|
654 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
655 |
|
(16 * x), |
656 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
657 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
658 |
dec->edged_width); |
(16 * x), dec->edged_width); |
659 |
|
|
660 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
661 |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
662 |
|
dec->refn[0].y + (16 * y + |
663 |
|
8) * dec->edged_width + |
664 |
|
(16 * x + 8), dec->edged_width); |
665 |
|
|
666 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
667 |
|
(8 * x), |
668 |
|
dec->refn[0].u + |
669 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
670 |
dec->edged_width/2); |
dec->edged_width/2); |
671 |
|
|
672 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
673 |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
674 |
|
dec->refn[0].v + |
675 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
676 |
dec->edged_width/2); |
dec->edged_width/2); |
677 |
|
|
678 |
stop_transfer_timer(); |
stop_transfer_timer(); |
684 |
|
|
685 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
686 |
// decode B-frame motion vector |
// decode B-frame motion vector |
687 |
void get_b_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, VECTOR * mv, int fcode, const VECTOR pmv) |
void |
688 |
|
get_b_motion_vector(DECODER * dec, |
689 |
|
Bitstream * bs, |
690 |
|
int x, |
691 |
|
int y, |
692 |
|
VECTOR * mv, |
693 |
|
int fcode, |
694 |
|
const VECTOR pmv) |
695 |
{ |
{ |
696 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
697 |
int high = (32 * scale_fac) - 1; |
int high = (32 * scale_fac) - 1; |
710 |
mv_x += pmv_x; |
mv_x += pmv_x; |
711 |
mv_y += pmv_y; |
mv_y += pmv_y; |
712 |
|
|
713 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
714 |
mv_x += range; |
mv_x += range; |
715 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
716 |
mv_x -= range; |
mv_x -= range; |
717 |
} |
} |
718 |
|
|
719 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
720 |
mv_y += range; |
mv_y += range; |
721 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
722 |
mv_y -= range; |
mv_y -= range; |
723 |
} |
} |
724 |
|
|
729 |
|
|
730 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
731 |
// decode an B-frame forward & backward inter macroblock |
// decode an B-frame forward & backward inter macroblock |
732 |
void decoder_bf_mbinter(DECODER * dec, |
void |
733 |
|
decoder_bf_mbinter(DECODER * dec, |
734 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
735 |
const uint32_t x_pos, |
const uint32_t x_pos, |
736 |
const uint32_t y_pos, |
const uint32_t y_pos, |
755 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
756 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
757 |
|
|
758 |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
759 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
760 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
761 |
|
|
762 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
763 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
764 |
} |
} else { |
|
else |
|
|
{ |
|
765 |
int sum; |
int sum; |
766 |
|
|
767 |
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; |
768 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
769 |
|
(sum == |
770 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
771 |
|
(ABS(sum) / 16) * 2)); |
772 |
|
|
773 |
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; |
774 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
775 |
|
(sum == |
776 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
777 |
|
(ABS(sum) / 16) * 2)); |
778 |
} |
} |
779 |
|
|
780 |
start_timer(); |
start_timer(); |
781 |
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, |
782 |
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); |
783 |
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, |
784 |
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); |
785 |
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, |
786 |
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, |
787 |
|
0); |
788 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
789 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
790 |
|
0); |
791 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
792 |
|
uv_dx, uv_dy, stride2, 0); |
793 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
794 |
|
uv_dx, uv_dy, stride2, 0); |
795 |
stop_comp_timer(); |
stop_comp_timer(); |
796 |
|
|
797 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
798 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
799 |
{ |
{ |
800 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
804 |
stop_coding_timer(); |
stop_coding_timer(); |
805 |
|
|
806 |
start_timer(); |
start_timer(); |
807 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
808 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
809 |
} |
} else { |
|
else |
|
|
{ |
|
810 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
811 |
} |
} |
812 |
stop_iquant_timer(); |
stop_iquant_timer(); |
813 |
|
|
|
data[0]=10; |
|
814 |
start_timer(); |
start_timer(); |
815 |
idct(&data[i*64]); |
idct(&data[i*64]); |
816 |
stop_idct_timer(); |
stop_idct_timer(); |
817 |
} |
} |
818 |
} |
} |
819 |
|
|
820 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
821 |
next_block = stride; |
next_block = stride; |
822 |
stride *= 2; |
stride *= 2; |
823 |
} |
} |
841 |
|
|
842 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
843 |
// decode an B-frame direct & inter macroblock |
// decode an B-frame direct & inter macroblock |
844 |
void decoder_bf_interpolate_mbinter(DECODER * dec, |
void |
845 |
IMAGE forward, IMAGE backward, |
decoder_bf_interpolate_mbinter(DECODER * dec, |
846 |
|
IMAGE forward, |
847 |
|
IMAGE backward, |
848 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
849 |
const uint32_t x_pos, |
const uint32_t x_pos, |
850 |
const uint32_t y_pos, |
const uint32_t y_pos, |
868 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
869 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
870 |
|
|
871 |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
{ |
|
872 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
873 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
874 |
|
|
880 |
|
|
881 |
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; |
882 |
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; |
883 |
} |
} else { |
|
else |
|
|
{ |
|
884 |
int sum; |
int sum; |
885 |
|
|
886 |
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; |
887 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
888 |
|
(sum == |
889 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
890 |
|
(ABS(sum) / 16) * 2)); |
891 |
|
|
892 |
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; |
893 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
894 |
|
(sum == |
895 |
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] + |
896 |
b_uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
(ABS(sum) / 16) * 2)); |
897 |
|
|
898 |
sum = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
sum = |
899 |
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 + |
900 |
} |
pMB->b_mvs[3].x; |
901 |
|
b_uv_dx = |
902 |
|
(sum == |
903 |
start_timer(); |
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
904 |
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)); |
905 |
interpolate8x8_switch(dec->cur.y, forward.y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
906 |
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 = |
907 |
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 + |
908 |
interpolate8x8_switch(dec->cur.u, forward.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
pMB->b_mvs[3].y; |
909 |
interpolate8x8_switch(dec->cur.v, forward.v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, 0); |
b_uv_dy = |
910 |
|
(sum == |
911 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
912 |
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)); |
913 |
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); |
} |
914 |
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); |
|
915 |
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); |
|
916 |
interpolate8x8_switch(dec->refn[2].u, backward.u, 8*x_pos, 8*y_pos, b_uv_dx, b_uv_dy, stride2, 0); |
start_timer(); |
917 |
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, |
918 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
919 |
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, |
920 |
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); |
921 |
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, |
922 |
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); |
923 |
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, |
924 |
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, |
925 |
|
0); |
926 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
927 |
|
uv_dy, stride2, 0); |
928 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
929 |
|
uv_dy, stride2, 0); |
930 |
|
|
931 |
|
|
932 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
933 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
934 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
935 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
936 |
|
0); |
937 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
938 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
939 |
|
stride, 0); |
940 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
941 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
942 |
|
stride, 0); |
943 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
944 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
945 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
946 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
947 |
|
|
948 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
949 |
|
stride); |
950 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
951 |
|
stride); |
952 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
953 |
|
stride); |
954 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
955 |
|
16 * y_pos + 8, stride); |
956 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
957 |
|
stride2); |
958 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
959 |
|
stride2); |
960 |
|
|
961 |
stop_comp_timer(); |
stop_comp_timer(); |
962 |
|
|
963 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
964 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
965 |
{ |
{ |
966 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
970 |
stop_coding_timer(); |
stop_coding_timer(); |
971 |
|
|
972 |
start_timer(); |
start_timer(); |
973 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
974 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
975 |
} |
} else { |
|
else |
|
|
{ |
|
976 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
977 |
} |
} |
978 |
stop_iquant_timer(); |
stop_iquant_timer(); |
983 |
} |
} |
984 |
} |
} |
985 |
|
|
986 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
987 |
next_block = stride; |
next_block = stride; |
988 |
stride *= 2; |
stride *= 2; |
989 |
} |
} |
1007 |
|
|
1008 |
// add by MinChen <chenm001@163.com> |
// add by MinChen <chenm001@163.com> |
1009 |
// for decode B-frame dbquant |
// for decode B-frame dbquant |
1010 |
int32_t __inline get_dbquant(Bitstream * bs) |
int32_t __inline |
1011 |
|
get_dbquant(Bitstream * bs) |
1012 |
{ |
{ |
1013 |
if (!BitstreamGetBit(bs)) // '0' |
if (!BitstreamGetBit(bs)) // '0' |
1014 |
return(0); |
return(0); |
1025 |
// 01 1 |
// 01 1 |
1026 |
// 001 2 |
// 001 2 |
1027 |
// 0001 3 |
// 0001 3 |
1028 |
int32_t __inline get_mbtype(Bitstream * bs) |
int32_t __inline |
1029 |
|
get_mbtype(Bitstream * bs) |
1030 |
{ |
{ |
1031 |
int32_t mb_type; |
int32_t mb_type; |
1032 |
|
|
1033 |
for(mb_type=0;mb_type<=3;mb_type++){ |
for(mb_type=0;mb_type<=3;mb_type++){ |
1034 |
if (BitstreamGetBit(bs)) |
if (BitstreamGetBit(bs)) |
1035 |
break; |
break; |
1041 |
return(-1); |
return(-1); |
1042 |
} |
} |
1043 |
|
|
1044 |
void decoder_bframe(DECODER * dec, Bitstream * bs, int quant, int fcode_forward, int fcode_backward) |
void |
1045 |
|
decoder_bframe(DECODER * dec, |
1046 |
|
Bitstream * bs, |
1047 |
|
int quant, |
1048 |
|
int fcode_forward, |
1049 |
|
int fcode_backward) |
1050 |
{ |
{ |
1051 |
|
|
1052 |
uint32_t x, y; |
uint32_t x, y; |
1053 |
VECTOR mv, zeromv; |
VECTOR mv, zeromv; |
1054 |
|
|
1055 |
start_timer(); |
start_timer(); |
1056 |
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, |
1057 |
|
dec->width, dec->height, dec->interlacing); |
1058 |
//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); |
1059 |
stop_edges_timer(); |
stop_edges_timer(); |
1060 |
|
|
1061 |
|
|
1062 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
|
{ |
|
1063 |
// Initialize Pred Motion Vector |
// Initialize Pred Motion Vector |
1064 |
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; |
1065 |
for (x = 0; x < dec->mb_width; x++) |
for (x = 0; x < dec->mb_width; x++) { |
|
{ |
|
1066 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
1067 |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
1068 |
|
|
1069 |
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 = |
1070 |
|
0; |
1071 |
|
|
1072 |
// the last P_VOP is skip macroblock ? |
// the last P_VOP is skip macroblock ? |
1073 |
if (last_mb->mode == MODE_NOT_CODED){ |
if (last_mb->mode == MODE_NOT_CODED){ |
1081 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1082 |
continue; |
continue; |
1083 |
} |
} |
|
|
|
1084 |
//t=BitstreamShowBits(bs,32); |
//t=BitstreamShowBits(bs,32); |
1085 |
|
|
1086 |
if (!BitstreamGetBit(bs)){ // modb=='0' |
if (!BitstreamGetBit(bs)){ // modb=='0' |
1096 |
if (mb->mb_type && mb->cbp){ |
if (mb->mb_type && mb->cbp){ |
1097 |
quant += get_dbquant(bs); |
quant += get_dbquant(bs); |
1098 |
|
|
1099 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
1100 |
quant = 31; |
quant = 31; |
1101 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
1102 |
quant = 1; |
quant = 1; |
1103 |
} |
} |
1104 |
} else { |
} else { |
1113 |
mb->mode = MODE_INTER; |
mb->mode = MODE_INTER; |
1114 |
//DEBUG1("Switch bm_type=",mb->mb_type); |
//DEBUG1("Switch bm_type=",mb->mb_type); |
1115 |
|
|
1116 |
switch(mb->mb_type) |
switch (mb->mb_type) { |
|
{ |
|
1117 |
case MODE_DIRECT: |
case MODE_DIRECT: |
1118 |
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); |
1119 |
|
|
1120 |
case MODE_DIRECT_NONE_MV: |
case MODE_DIRECT_NONE_MV: |
1121 |
{ // 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 |
1122 |
const int64_t TRB=dec->time_pp-dec->time_bp, |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1123 |
TRD=dec->time_pp; |
dec->time_pp; |
1124 |
int i; |
int i; |
1125 |
|
|
1126 |
for(i=0;i<4;i++){ |
for(i=0;i<4;i++){ |
1127 |
mb->mvs[i].x = (int32_t)((TRB * last_mb->mvs[i].x)/TRD+mb->mvs[0].x); |
mb->mvs[i].x = |
1128 |
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 + |
1129 |
mb->mvs[i].y = (int32_t)((TRB * last_mb->mvs[i].y)/TRD+mb->mvs[0].y); |
mb->mvs[0].x); |
1130 |
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 = |
1131 |
|
(int32_t) ((mb->mvs[0].x == |
1132 |
|
0) ? ((TRB - |
1133 |
|
TRD) * last_mb->mvs[i].x) / |
1134 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1135 |
|
mb->mvs[i].y = |
1136 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1137 |
|
mb->mvs[0].y); |
1138 |
|
mb->b_mvs[i].y = |
1139 |
|
(int32_t) ((mb->mvs[0].y == |
1140 |
|
0) ? ((TRB - |
1141 |
|
TRD) * last_mb->mvs[i].y) / |
1142 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1143 |
} |
} |
1144 |
//DEBUG("B-frame Direct!\n"); |
//DEBUG("B-frame Direct!\n"); |
1145 |
} |
} |
1146 |
mb->mode = MODE_INTER4V; |
mb->mode = MODE_INTER4V; |
1147 |
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], |
1148 |
|
mb, x, y, mb->cbp, bs); |
1149 |
break; |
break; |
1150 |
|
|
1151 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
1152 |
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, |
1153 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1154 |
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 = |
1155 |
|
mb->mvs[0].x; |
1156 |
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 = |
1157 |
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; |
1158 |
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = mb->b_mvs[3].y = mb->b_mvs[0].y; |
|
1159 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1160 |
|
fcode_backward, dec->p_bmv); |
1161 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1162 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1163 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1164 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1165 |
|
|
1166 |
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], |
1167 |
|
mb, x, y, mb->cbp, bs); |
1168 |
//DEBUG("B-frame Bidir!\n"); |
//DEBUG("B-frame Bidir!\n"); |
1169 |
break; |
break; |
1170 |
|
|
1171 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
1172 |
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, |
1173 |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_bmv); |
1174 |
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 = |
1175 |
|
mb->mvs[0].x; |
1176 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1177 |
|
mb->mvs[0].y; |
1178 |
|
|
1179 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1180 |
//DEBUG("B-frame Backward!\n"); |
//DEBUG("B-frame Backward!\n"); |
1181 |
break; |
break; |
1182 |
|
|
1183 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1184 |
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, |
1185 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1186 |
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 = |
1187 |
|
mb->mvs[0].x; |
1188 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1189 |
|
mb->mvs[0].y; |
1190 |
|
|
1191 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1192 |
//DEBUG("B-frame Forward!\n"); |
//DEBUG("B-frame Forward!\n"); |
1201 |
} |
} |
1202 |
|
|
1203 |
// swap two MACROBLOCK array |
// swap two MACROBLOCK array |
1204 |
void mb_swap(MACROBLOCK **mb1, MACROBLOCK **mb2) |
void |
1205 |
|
mb_swap(MACROBLOCK ** mb1, |
1206 |
|
MACROBLOCK ** mb2) |
1207 |
{ |
{ |
1208 |
MACROBLOCK *temp=*mb1; |
MACROBLOCK *temp=*mb1; |
1209 |
|
|
1210 |
*mb1=*mb2; |
*mb1=*mb2; |
1211 |
*mb2=temp; |
*mb2=temp; |
1212 |
} |
} |
1213 |
|
|
1214 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
int |
1215 |
|
decoder_decode(DECODER * dec, |
1216 |
|
XVID_DEC_FRAME * frame) |
1217 |
{ |
{ |
1218 |
|
|
1219 |
Bitstream bs; |
Bitstream bs; |
1231 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1232 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
1233 |
dec->frames ++; |
dec->frames ++; |
1234 |
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold); |
vop_type = |
1235 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1236 |
|
&fcode_backward, &intra_dc_threshold); |
1237 |
|
|
1238 |
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 |
1239 |
switch (vop_type) |
|
1240 |
{ |
switch (vop_type) { |
1241 |
case P_VOP : |
case P_VOP : |
1242 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1243 |
|
intra_dc_threshold); |
1244 |
DEBUG1("P_VOP Time=",dec->time); |
DEBUG1("P_VOP Time=",dec->time); |
1245 |
break; |
break; |
1246 |
|
|
1250 |
break; |
break; |
1251 |
|
|
1252 |
case B_VOP : |
case B_VOP : |
1253 |
|
#ifdef BFRAMES |
1254 |
if (dec->time_pp > dec->time_bp){ |
if (dec->time_pp > dec->time_bp){ |
1255 |
DEBUG1("B_VOP Time=",dec->time); |
DEBUG1("B_VOP Time=",dec->time); |
1256 |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1257 |
} else { |
} else { |
1258 |
DEBUG("broken B-frame!"); |
DEBUG("broken B-frame!"); |
1259 |
} |
} |
1260 |
|
#endif |
1261 |
break; |
break; |
1262 |
|
|
1263 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1269 |
|
|
1270 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1271 |
|
|
1272 |
|
#ifdef BFRAMES |
1273 |
|
// test if no B_VOP |
1274 |
|
if (dec->low_delay) { |
1275 |
|
#endif |
1276 |
|
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1277 |
|
frame->image, frame->stride, frame->colorspace); |
1278 |
|
#ifdef BFRAMES |
1279 |
|
} else { |
1280 |
if (dec->frames >= 1){ |
if (dec->frames >= 1){ |
1281 |
start_timer(); |
start_timer(); |
1282 |
if ((vop_type == I_VOP || vop_type == P_VOP)) |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1283 |
{ |
image_output(&dec->refn[0], dec->width, dec->height, |
1284 |
image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, |
dec->edged_width, frame->image, frame->stride, |
1285 |
frame->image, frame->stride, frame->colorspace); |
frame->colorspace); |
1286 |
} else if (vop_type == B_VOP) { |
} else if (vop_type == B_VOP) { |
1287 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, |
1288 |
frame->image, frame->stride, frame->colorspace); |
dec->edged_width, frame->image, frame->stride, |
1289 |
|
frame->colorspace); |
1290 |
} |
} |
1291 |
stop_conv_timer(); |
stop_conv_timer(); |
1292 |
} |
} |
1293 |
|
} |
1294 |
|
#endif |
1295 |
|
|
1296 |
if (vop_type==I_VOP || vop_type==P_VOP){ |
if (vop_type==I_VOP || vop_type==P_VOP){ |
1297 |
image_swap(&dec->refn[0], &dec->refn[1]); |
image_swap(&dec->refn[0], &dec->refn[1]); |
1298 |
image_swap(&dec->cur, &dec->refn[0]); |
image_swap(&dec->cur, &dec->refn[0]); |
1299 |
// swap MACROBLOCK |
// swap MACROBLOCK |
1300 |
if (vop_type==P_VOP) |
if (dec->low_delay && vop_type == P_VOP) |
1301 |
mb_swap(&dec->mbs, &dec->last_mbs); |
mb_swap(&dec->mbs, &dec->last_mbs); |
1302 |
} |
} |
1303 |
|
|