32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 28.06.2002 added basic resync support to iframe/pframe_decode() |
36 |
|
* 22.06.2002 added primative N_VOP support |
37 |
|
* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
38 |
* 08.05.2002 add low_delay support for B_VOP decode |
* 08.05.2002 add low_delay support for B_VOP decode |
39 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
40 |
* 05.05.2002 fix some B-frame decode problem |
* 05.05.2002 fix some B-frame decode problem |
50 |
* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
51 |
* 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> |
52 |
* |
* |
53 |
* $Id: decoder.c,v 1.18 2002-05-20 17:12:53 Isibaar Exp $ |
* $Id: decoder.c,v 1.23 2002-06-30 10:46:29 suxen_drol Exp $ |
54 |
* |
* |
55 |
*************************************************************************/ |
*************************************************************************/ |
56 |
|
|
80 |
#include "image/colorspace.h" |
#include "image/colorspace.h" |
81 |
#include "utils/mem_align.h" |
#include "utils/mem_align.h" |
82 |
|
|
83 |
int decoder_create(XVID_DEC_PARAM * param) |
int |
84 |
|
decoder_create(XVID_DEC_PARAM * param) |
85 |
{ |
{ |
86 |
DECODER * dec; |
DECODER * dec; |
87 |
|
|
88 |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
89 |
if (dec == NULL) |
if (dec == NULL) { |
|
{ |
|
90 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
91 |
} |
} |
92 |
param->handle = dec; |
param->handle = dec; |
99 |
|
|
100 |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
101 |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
102 |
|
dec->low_delay = 0; |
103 |
|
|
104 |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
|
{ |
|
105 |
xvid_free(dec); |
xvid_free(dec); |
106 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
107 |
} |
} |
108 |
|
|
109 |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
|
{ |
|
110 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
111 |
xvid_free(dec); |
xvid_free(dec); |
112 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
113 |
} |
} |
114 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
115 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
116 |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[1], 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 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
119 |
xvid_free(dec); |
xvid_free(dec); |
120 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
121 |
} |
} |
122 |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
|
{ |
|
123 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
124 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
125 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
127 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
128 |
} |
} |
129 |
|
|
130 |
dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->mbs = |
131 |
if (dec->mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
132 |
{ |
CACHE_LINE); |
133 |
|
if (dec->mbs == NULL) { |
134 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
135 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
136 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
138 |
xvid_free(dec); |
xvid_free(dec); |
139 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
140 |
} |
} |
141 |
|
|
142 |
|
memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
143 |
|
|
144 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
145 |
// for skip MB flag |
// for skip MB flag |
146 |
dec->last_mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->last_mbs = |
147 |
if (dec->last_mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
148 |
{ |
CACHE_LINE); |
149 |
|
if (dec->last_mbs == NULL) { |
150 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
151 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
152 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
156 |
return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
157 |
} |
} |
158 |
|
|
159 |
|
memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
160 |
|
|
161 |
init_timer(); |
init_timer(); |
162 |
|
|
163 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
169 |
} |
} |
170 |
|
|
171 |
|
|
172 |
int decoder_destroy(DECODER * dec) |
int |
173 |
|
decoder_destroy(DECODER * dec) |
174 |
{ |
{ |
175 |
xvid_free(dec->last_mbs); |
xvid_free(dec->last_mbs); |
176 |
xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
186 |
|
|
187 |
|
|
188 |
|
|
189 |
static const int32_t dquant_table[4] = |
static const int32_t dquant_table[4] = { |
|
{ |
|
190 |
-1, -2, 1, 2 |
-1, -2, 1, 2 |
191 |
}; |
}; |
192 |
|
|
195 |
|
|
196 |
// decode an intra macroblock |
// decode an intra macroblock |
197 |
|
|
198 |
void decoder_mbintra(DECODER * dec, |
void |
199 |
|
decoder_mbintra(DECODER * dec, |
200 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
201 |
const uint32_t x_pos, |
const uint32_t x_pos, |
202 |
const uint32_t y_pos, |
const uint32_t y_pos, |
204 |
const uint32_t cbp, |
const uint32_t cbp, |
205 |
Bitstream * bs, |
Bitstream * bs, |
206 |
const uint32_t quant, |
const uint32_t quant, |
207 |
const uint32_t intra_dc_threshold) |
const uint32_t intra_dc_threshold, |
208 |
|
const unsigned int bound) |
209 |
{ |
{ |
210 |
|
|
211 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
224 |
|
|
225 |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
226 |
|
|
227 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
228 |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
229 |
int16_t predictors[8]; |
int16_t predictors[8]; |
230 |
int start_coeff; |
int start_coeff; |
231 |
|
|
232 |
start_timer(); |
start_timer(); |
233 |
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], |
234 |
if (!acpred_flag) |
iQuant, iDcScaler, predictors, bound); |
235 |
{ |
if (!acpred_flag) { |
236 |
pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
237 |
} |
} |
238 |
stop_prediction_timer(); |
stop_prediction_timer(); |
239 |
|
|
240 |
if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) { |
|
{ |
|
241 |
int dc_size; |
int dc_size; |
242 |
int dc_dif; |
int dc_dif; |
243 |
|
|
244 |
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); |
245 |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
246 |
|
|
247 |
if (dc_size > 8) |
if (dc_size > 8) { |
|
{ |
|
248 |
BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
249 |
} |
} |
250 |
|
|
251 |
block[i*64 + 0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
252 |
start_coeff = 1; |
start_coeff = 1; |
253 |
} |
|
254 |
else |
DPRINTF(DPRINTF_COEFF,"block[0] %i", dc_dif); |
255 |
{ |
} else { |
256 |
start_coeff = 0; |
start_coeff = 0; |
257 |
} |
} |
258 |
|
|
259 |
start_timer(); |
start_timer(); |
260 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
261 |
{ |
{ |
262 |
get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
263 |
|
start_coeff); |
264 |
} |
} |
265 |
stop_coding_timer(); |
stop_coding_timer(); |
266 |
|
|
269 |
stop_prediction_timer(); |
stop_prediction_timer(); |
270 |
|
|
271 |
start_timer(); |
start_timer(); |
272 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
273 |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
274 |
} |
} else { |
|
else |
|
|
{ |
|
275 |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
276 |
} |
} |
277 |
stop_iquant_timer(); |
stop_iquant_timer(); |
281 |
stop_idct_timer(); |
stop_idct_timer(); |
282 |
} |
} |
283 |
|
|
284 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
285 |
next_block = stride; |
next_block = stride; |
286 |
stride *= 2; |
stride *= 2; |
287 |
} |
} |
308 |
|
|
309 |
// decode an inter macroblock |
// decode an inter macroblock |
310 |
|
|
311 |
void decoder_mbinter(DECODER * dec, |
void |
312 |
|
decoder_mbinter(DECODER * dec, |
313 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
314 |
const uint32_t x_pos, |
const uint32_t x_pos, |
315 |
const uint32_t y_pos, |
const uint32_t y_pos, |
335 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
336 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
337 |
|
|
338 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
|
{ |
|
339 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
340 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
341 |
|
|
342 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
343 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
344 |
} |
} else { |
|
else |
|
|
{ |
|
345 |
int sum; |
int sum; |
346 |
|
|
347 |
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; |
348 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
349 |
|
(sum == |
350 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
351 |
|
(ABS(sum) / 16) * 2)); |
352 |
|
|
353 |
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; |
354 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
355 |
|
(sum == |
356 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
357 |
|
(ABS(sum) / 16) * 2)); |
358 |
} |
} |
359 |
|
|
360 |
start_timer(); |
start_timer(); |
361 |
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, |
362 |
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); |
363 |
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, |
364 |
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, |
365 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
366 |
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, |
367 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
368 |
|
rounding); |
369 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
370 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
371 |
|
rounding); |
372 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
373 |
|
uv_dx, uv_dy, stride2, rounding); |
374 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
375 |
|
uv_dx, uv_dy, stride2, rounding); |
376 |
stop_comp_timer(); |
stop_comp_timer(); |
377 |
|
|
378 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
379 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
380 |
{ |
{ |
381 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
385 |
stop_coding_timer(); |
stop_coding_timer(); |
386 |
|
|
387 |
start_timer(); |
start_timer(); |
388 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
389 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
390 |
} |
} else { |
|
else |
|
|
{ |
|
391 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
392 |
} |
} |
393 |
stop_iquant_timer(); |
stop_iquant_timer(); |
398 |
} |
} |
399 |
} |
} |
400 |
|
|
401 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
402 |
next_block = stride; |
next_block = stride; |
403 |
stride *= 2; |
stride *= 2; |
404 |
} |
} |
420 |
} |
} |
421 |
|
|
422 |
|
|
423 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
424 |
|
decoder_iframe(DECODER * dec, |
425 |
|
Bitstream * bs, |
426 |
|
int quant, |
427 |
|
int intra_dc_threshold) |
428 |
{ |
{ |
429 |
|
uint32_t bound; |
430 |
uint32_t x, y; |
uint32_t x, y; |
431 |
|
|
432 |
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]; |
|
433 |
|
|
434 |
|
for (y = 0; y < dec->mb_height; y++) { |
435 |
|
for (x = 0; x < dec->mb_width; x++) { |
436 |
|
MACROBLOCK *mb; |
437 |
uint32_t mcbpc; |
uint32_t mcbpc; |
438 |
uint32_t cbpc; |
uint32_t cbpc; |
439 |
uint32_t acpred_flag; |
uint32_t acpred_flag; |
440 |
uint32_t cbpy; |
uint32_t cbpy; |
441 |
uint32_t cbp; |
uint32_t cbp; |
442 |
|
|
443 |
|
while (BitstreamShowBits(bs, 9) == 1) |
444 |
|
BitstreamSkip(bs, 9); |
445 |
|
|
446 |
|
if (check_resync_marker(bs, 0)) |
447 |
|
{ |
448 |
|
bound = read_video_packet_header(bs, 0, &quant); |
449 |
|
x = bound % dec->mb_width; |
450 |
|
y = bound / dec->mb_width; |
451 |
|
} |
452 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
453 |
|
|
454 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
455 |
|
|
456 |
mcbpc = get_mcbpc_intra(bs); |
mcbpc = get_mcbpc_intra(bs); |
457 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
458 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
459 |
|
|
460 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
461 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
462 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
463 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
464 |
|
|
465 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
466 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
467 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
468 |
quant = 31; |
quant = 31; |
469 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
470 |
quant = 1; |
quant = 1; |
471 |
} |
} |
472 |
} |
} |
473 |
mb->quant = quant; |
mb->quant = quant; |
474 |
|
|
475 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
476 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
477 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
478 |
} |
} |
479 |
|
|
480 |
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, |
481 |
|
intra_dc_threshold, bound); |
482 |
} |
} |
483 |
} |
} |
484 |
|
|
485 |
} |
} |
486 |
|
|
487 |
|
|
488 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
489 |
|
get_motion_vector(DECODER * dec, |
490 |
|
Bitstream * bs, |
491 |
|
int x, |
492 |
|
int y, |
493 |
|
int k, |
494 |
|
VECTOR * mv, |
495 |
|
int fcode, |
496 |
|
const int bound) |
497 |
{ |
{ |
498 |
|
|
499 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
508 |
int pmv_x, pmv_y; |
int pmv_x, pmv_y; |
509 |
|
|
510 |
|
|
511 |
get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); |
get_pmvdata2(dec->mbs, x, y, dec->mb_width, k, pmv, psad, bound); |
512 |
|
|
513 |
pmv_x = pmv[0].x; |
pmv_x = pmv[0].x; |
514 |
pmv_y = pmv[0].y; |
pmv_y = pmv[0].y; |
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 |
|
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv_x, pmv_y); |
520 |
|
|
521 |
mv_x += pmv_x; |
mv_x += pmv_x; |
522 |
mv_y += pmv_y; |
mv_y += pmv_y; |
523 |
|
|
524 |
if (mv_x < low) |
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 |
|
|
1093 |
start_timer(); |
start_timer(); |
1094 |
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, |
1095 |
|
dec->width, dec->height, dec->interlacing); |
1096 |
//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); |
1097 |
stop_edges_timer(); |
stop_edges_timer(); |
1098 |
|
|
1099 |
|
|
1100 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
|
{ |
|
1101 |
// Initialize Pred Motion Vector |
// Initialize Pred Motion Vector |
1102 |
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; |
1103 |
for (x = 0; x < dec->mb_width; x++) |
for (x = 0; x < dec->mb_width; x++) { |
|
{ |
|
1104 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
1105 |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
MACROBLOCK * last_mb = &dec->last_mbs[y*dec->mb_width + x]; |
1106 |
|
|
1107 |
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 = |
1108 |
|
0; |
1109 |
|
|
1110 |
// the last P_VOP is skip macroblock ? |
// the last P_VOP is skip macroblock ? |
1111 |
if (last_mb->mode == MODE_NOT_CODED){ |
if (last_mb->mode == MODE_NOT_CODED){ |
1119 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1120 |
continue; |
continue; |
1121 |
} |
} |
|
|
|
1122 |
//t=BitstreamShowBits(bs,32); |
//t=BitstreamShowBits(bs,32); |
1123 |
|
|
1124 |
if (!BitstreamGetBit(bs)){ // modb=='0' |
if (!BitstreamGetBit(bs)){ // modb=='0' |
1134 |
if (mb->mb_type && mb->cbp){ |
if (mb->mb_type && mb->cbp){ |
1135 |
quant += get_dbquant(bs); |
quant += get_dbquant(bs); |
1136 |
|
|
1137 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
1138 |
quant = 31; |
quant = 31; |
1139 |
} |
} else if (quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
1140 |
quant = 1; |
quant = 1; |
1141 |
} |
} |
1142 |
} else { |
} else { |
1151 |
mb->mode = MODE_INTER; |
mb->mode = MODE_INTER; |
1152 |
//DEBUG1("Switch bm_type=",mb->mb_type); |
//DEBUG1("Switch bm_type=",mb->mb_type); |
1153 |
|
|
1154 |
switch(mb->mb_type) |
switch (mb->mb_type) { |
|
{ |
|
1155 |
case MODE_DIRECT: |
case MODE_DIRECT: |
1156 |
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); |
1157 |
|
|
1158 |
case MODE_DIRECT_NONE_MV: |
case MODE_DIRECT_NONE_MV: |
1159 |
{ // 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 |
1160 |
const int64_t TRB=dec->time_pp-dec->time_bp, |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1161 |
TRD=dec->time_pp; |
dec->time_pp; |
1162 |
int i; |
int i; |
1163 |
|
|
1164 |
for(i=0;i<4;i++){ |
for(i=0;i<4;i++){ |
1165 |
mb->mvs[i].x = (int32_t)((TRB * last_mb->mvs[i].x)/TRD+mb->mvs[0].x); |
mb->mvs[i].x = |
1166 |
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 + |
1167 |
mb->mvs[i].y = (int32_t)((TRB * last_mb->mvs[i].y)/TRD+mb->mvs[0].y); |
mb->mvs[0].x); |
1168 |
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 = |
1169 |
|
(int32_t) ((mb->mvs[0].x == |
1170 |
|
0) ? ((TRB - |
1171 |
|
TRD) * last_mb->mvs[i].x) / |
1172 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1173 |
|
mb->mvs[i].y = |
1174 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1175 |
|
mb->mvs[0].y); |
1176 |
|
mb->b_mvs[i].y = |
1177 |
|
(int32_t) ((mb->mvs[0].y == |
1178 |
|
0) ? ((TRB - |
1179 |
|
TRD) * last_mb->mvs[i].y) / |
1180 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1181 |
} |
} |
1182 |
//DEBUG("B-frame Direct!\n"); |
//DEBUG("B-frame Direct!\n"); |
1183 |
} |
} |
1184 |
mb->mode = MODE_INTER4V; |
mb->mode = MODE_INTER4V; |
1185 |
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], |
1186 |
|
mb, x, y, mb->cbp, bs); |
1187 |
break; |
break; |
1188 |
|
|
1189 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
1190 |
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, |
1191 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1192 |
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 = |
1193 |
|
mb->mvs[0].x; |
1194 |
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 = |
1195 |
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; |
1196 |
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = mb->b_mvs[3].y = mb->b_mvs[0].y; |
|
1197 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1198 |
|
fcode_backward, dec->p_bmv); |
1199 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1200 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1201 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1202 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1203 |
|
|
1204 |
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], |
1205 |
|
mb, x, y, mb->cbp, bs); |
1206 |
//DEBUG("B-frame Bidir!\n"); |
//DEBUG("B-frame Bidir!\n"); |
1207 |
break; |
break; |
1208 |
|
|
1209 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
1210 |
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, |
1211 |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_bmv); |
1212 |
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 = |
1213 |
|
mb->mvs[0].x; |
1214 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1215 |
|
mb->mvs[0].y; |
1216 |
|
|
1217 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1218 |
//DEBUG("B-frame Backward!\n"); |
//DEBUG("B-frame Backward!\n"); |
1219 |
break; |
break; |
1220 |
|
|
1221 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1222 |
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, |
1223 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
dec->p_fmv); |
1224 |
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 = |
1225 |
|
mb->mvs[0].x; |
1226 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1227 |
|
mb->mvs[0].y; |
1228 |
|
|
1229 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1230 |
//DEBUG("B-frame Forward!\n"); |
//DEBUG("B-frame Forward!\n"); |
1239 |
} |
} |
1240 |
|
|
1241 |
// swap two MACROBLOCK array |
// swap two MACROBLOCK array |
1242 |
void mb_swap(MACROBLOCK **mb1, MACROBLOCK **mb2) |
void |
1243 |
|
mb_swap(MACROBLOCK ** mb1, |
1244 |
|
MACROBLOCK ** mb2) |
1245 |
{ |
{ |
1246 |
MACROBLOCK *temp=*mb1; |
MACROBLOCK *temp=*mb1; |
1247 |
|
|
1248 |
*mb1=*mb2; |
*mb1=*mb2; |
1249 |
*mb2=temp; |
*mb2=temp; |
1250 |
} |
} |
1251 |
|
|
1252 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
int |
1253 |
|
decoder_decode(DECODER * dec, |
1254 |
|
XVID_DEC_FRAME * frame) |
1255 |
{ |
{ |
1256 |
|
|
1257 |
Bitstream bs; |
Bitstream bs; |
1269 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1270 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
1271 |
dec->frames++; |
dec->frames++; |
1272 |
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold); |
vop_type = |
1273 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1274 |
|
&fcode_backward, &intra_dc_threshold); |
1275 |
|
|
1276 |
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 |
1277 |
|
|
1278 |
switch (vop_type) |
switch (vop_type) { |
|
{ |
|
1279 |
case P_VOP : |
case P_VOP : |
1280 |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1281 |
|
intra_dc_threshold); |
1282 |
|
#ifdef BFRAMES_DEC |
1283 |
DEBUG1("P_VOP Time=",dec->time); |
DEBUG1("P_VOP Time=",dec->time); |
1284 |
|
#endif |
1285 |
break; |
break; |
1286 |
|
|
1287 |
case I_VOP : |
case I_VOP : |
1288 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1289 |
|
#ifdef BFRAMES_DEC |
1290 |
DEBUG1("I_VOP Time=",dec->time); |
DEBUG1("I_VOP Time=",dec->time); |
1291 |
|
#endif |
1292 |
break; |
break; |
1293 |
|
|
1294 |
case B_VOP : |
case B_VOP : |
1295 |
#ifdef BFRAMES |
#ifdef BFRAMES_DEC |
1296 |
if (dec->time_pp > dec->time_bp){ |
if (dec->time_pp > dec->time_bp){ |
1297 |
DEBUG1("B_VOP Time=",dec->time); |
DEBUG1("B_VOP Time=",dec->time); |
1298 |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1299 |
} else { |
} else { |
1300 |
DEBUG("broken B-frame!"); |
DEBUG("broken B-frame!"); |
1301 |
} |
} |
1302 |
|
#else |
1303 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1304 |
#endif |
#endif |
1305 |
break; |
break; |
1306 |
|
|
1307 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1308 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1309 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1310 |
break; |
break; |
1311 |
|
|
1312 |
default : |
default : |
1315 |
|
|
1316 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1317 |
|
|
1318 |
#ifdef BFRAMES |
#ifdef BFRAMES_DEC |
1319 |
// test if no B_VOP |
// test if no B_VOP |
1320 |
if (dec->low_delay){ |
if (dec->low_delay){ |
1321 |
#endif |
#endif |
1322 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1323 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1324 |
#ifdef BFRAMES |
#ifdef BFRAMES_DEC |
1325 |
} else { |
} else { |
1326 |
if (dec->frames >= 1){ |
if (dec->frames >= 1){ |
1327 |
start_timer(); |
start_timer(); |
1328 |
if ((vop_type == I_VOP || vop_type == P_VOP)) |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1329 |
{ |
image_output(&dec->refn[0], dec->width, dec->height, |
1330 |
image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, |
dec->edged_width, frame->image, frame->stride, |
1331 |
frame->image, frame->stride, frame->colorspace); |
frame->colorspace); |
1332 |
} else if (vop_type == B_VOP) { |
} else if (vop_type == B_VOP) { |
1333 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, |
1334 |
frame->image, frame->stride, frame->colorspace); |
dec->edged_width, frame->image, frame->stride, |
1335 |
|
frame->colorspace); |
1336 |
} |
} |
1337 |
stop_conv_timer(); |
stop_conv_timer(); |
1338 |
} |
} |