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Original Path: trunk/xvidcore/src/decoder.c
1 : | Isibaar | 3 | /************************************************************************** |
2 : | * | ||
3 : | * XVID MPEG-4 VIDEO CODEC | ||
4 : | * decoder main | ||
5 : | * | ||
6 : | * This program is an implementation of a part of one or more MPEG-4 | ||
7 : | * Video tools as specified in ISO/IEC 14496-2 standard. Those intending | ||
8 : | * to use this software module in hardware or software products are | ||
9 : | * advised that its use may infringe existing patents or copyrights, and | ||
10 : | * any such use would be at such party's own risk. The original | ||
11 : | * developer of this software module and his/her company, and subsequent | ||
12 : | * editors and their companies, will have no liability for use of this | ||
13 : | * software or modifications or derivatives thereof. | ||
14 : | * | ||
15 : | Isibaar | 41 | * This program is xvid_free software; you can redistribute it and/or modify |
16 : | Isibaar | 3 | * it under the terms of the GNU General Public License as published by |
17 : | Isibaar | 41 | * the xvid_free Software Foundation; either version 2 of the License, or |
18 : | Isibaar | 3 | * (at your option) any later version. |
19 : | * | ||
20 : | * This program is distributed in the hope that it will be useful, | ||
21 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
22 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
23 : | * GNU General Public License for more details. | ||
24 : | * | ||
25 : | * You should have received a copy of the GNU General Public License | ||
26 : | Isibaar | 41 | * along with this program; if not, write to the xvid_free Software |
27 : | Isibaar | 3 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
28 : | * | ||
29 : | *************************************************************************/ | ||
30 : | |||
31 : | /************************************************************************** | ||
32 : | * | ||
33 : | * History: | ||
34 : | * | ||
35 : | * 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block | ||
36 : | * 22.12.2001 block based interpolation | ||
37 : | * 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> | ||
38 : | * | ||
39 : | *************************************************************************/ | ||
40 : | |||
41 : | #include <stdlib.h> | ||
42 : | #include <string.h> // memset | ||
43 : | |||
44 : | #include "xvid.h" | ||
45 : | #include "portab.h" | ||
46 : | |||
47 : | #include "decoder.h" | ||
48 : | #include "bitstream/bitstream.h" | ||
49 : | #include "bitstream/mbcoding.h" | ||
50 : | |||
51 : | #include "quant/quant_h263.h" | ||
52 : | #include "quant/quant_mpeg4.h" | ||
53 : | #include "dct/idct.h" | ||
54 : | #include "dct/fdct.h" | ||
55 : | #include "utils/mem_transfer.h" | ||
56 : | #include "image/interpolate8x8.h" | ||
57 : | |||
58 : | #include "bitstream/mbcoding.h" | ||
59 : | #include "prediction/mbprediction.h" | ||
60 : | #include "utils/timer.h" | ||
61 : | #include "utils/emms.h" | ||
62 : | |||
63 : | #include "image/image.h" | ||
64 : | #include "image/colorspace.h" | ||
65 : | Isibaar | 41 | #include "utils/mem_align.h" |
66 : | Isibaar | 3 | |
67 : | int decoder_create(XVID_DEC_PARAM * param) | ||
68 : | { | ||
69 : | DECODER * dec; | ||
70 : | |||
71 : | Isibaar | 42 | dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
72 : | Isibaar | 3 | if (dec == NULL) |
73 : | { | ||
74 : | return XVID_ERR_MEMORY; | ||
75 : | } | ||
76 : | param->handle = dec; | ||
77 : | |||
78 : | dec->width = param->width; | ||
79 : | dec->height = param->height; | ||
80 : | |||
81 : | dec->mb_width = (dec->width + 15) / 16; | ||
82 : | dec->mb_height = (dec->height + 15) / 16; | ||
83 : | |||
84 : | dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; | ||
85 : | dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; | ||
86 : | |||
87 : | if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) | ||
88 : | { | ||
89 : | Isibaar | 41 | xvid_free(dec); |
90 : | Isibaar | 3 | return XVID_ERR_MEMORY; |
91 : | } | ||
92 : | |||
93 : | if (image_create(&dec->refn, dec->edged_width, dec->edged_height)) | ||
94 : | { | ||
95 : | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); | ||
96 : | Isibaar | 41 | xvid_free(dec); |
97 : | Isibaar | 3 | return XVID_ERR_MEMORY; |
98 : | } | ||
99 : | |||
100 : | Isibaar | 42 | dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
101 : | Isibaar | 3 | if (dec->mbs == NULL) |
102 : | { | ||
103 : | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); | ||
104 : | Isibaar | 41 | xvid_free(dec); |
105 : | Isibaar | 3 | return XVID_ERR_MEMORY; |
106 : | } | ||
107 : | |||
108 : | init_timer(); | ||
109 : | create_vlc_tables(); | ||
110 : | |||
111 : | return XVID_ERR_OK; | ||
112 : | } | ||
113 : | |||
114 : | |||
115 : | int decoder_destroy(DECODER * dec) | ||
116 : | { | ||
117 : | Isibaar | 41 | xvid_free(dec->mbs); |
118 : | Isibaar | 3 | image_destroy(&dec->refn, dec->edged_width, dec->edged_height); |
119 : | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); | ||
120 : | Isibaar | 41 | xvid_free(dec); |
121 : | Isibaar | 3 | |
122 : | destroy_vlc_tables(); | ||
123 : | |||
124 : | write_timer(); | ||
125 : | return XVID_ERR_OK; | ||
126 : | } | ||
127 : | |||
128 : | |||
129 : | |||
130 : | static const int32_t dquant_table[4] = | ||
131 : | { | ||
132 : | -1, -2, 1, 2 | ||
133 : | }; | ||
134 : | |||
135 : | |||
136 : | // decode an intra macroblock | ||
137 : | |||
138 : | void decoder_mbintra(DECODER * dec, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int intra_dc_threshold) | ||
139 : | { | ||
140 : | uint32_t k; | ||
141 : | |||
142 : | for (k = 0; k < 6; k++) | ||
143 : | { | ||
144 : | uint32_t dcscalar; | ||
145 : | Isibaar | 42 | CACHE_ALIGN int16_t block[64]; |
146 : | CACHE_ALIGN int16_t data[64]; | ||
147 : | Isibaar | 3 | int16_t predictors[8]; |
148 : | int start_coeff; | ||
149 : | |||
150 : | dcscalar = get_dc_scaler(mb->quant, k < 4); | ||
151 : | |||
152 : | start_timer(); | ||
153 : | predict_acdc(dec->mbs, x, y, dec->mb_width, k, block, mb->quant, dcscalar, predictors); | ||
154 : | if (!acpred_flag) | ||
155 : | { | ||
156 : | mb->acpred_directions[k] = 0; | ||
157 : | } | ||
158 : | stop_prediction_timer(); | ||
159 : | |||
160 : | memset(block, 0, 64*sizeof(int16_t)); // clear | ||
161 : | |||
162 : | if (quant < intra_dc_threshold) | ||
163 : | { | ||
164 : | int dc_size; | ||
165 : | int dc_dif; | ||
166 : | |||
167 : | dc_size = k < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); | ||
168 : | dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; | ||
169 : | |||
170 : | if (dc_size > 8) | ||
171 : | { | ||
172 : | BitstreamSkip(bs, 1); // marker | ||
173 : | } | ||
174 : | |||
175 : | block[0] = dc_dif; | ||
176 : | start_coeff = 1; | ||
177 : | } | ||
178 : | else | ||
179 : | { | ||
180 : | start_coeff = 0; | ||
181 : | } | ||
182 : | |||
183 : | start_timer(); | ||
184 : | if (cbp & (1 << (5-k))) // coded | ||
185 : | { | ||
186 : | get_intra_block(bs, block, mb->acpred_directions[k], start_coeff); | ||
187 : | } | ||
188 : | stop_coding_timer(); | ||
189 : | |||
190 : | start_timer(); | ||
191 : | add_acdc(mb, k, block, dcscalar, predictors); | ||
192 : | stop_prediction_timer(); | ||
193 : | |||
194 : | start_timer(); | ||
195 : | if (dec->quant_type == 0) | ||
196 : | { | ||
197 : | dequant_intra(data, block, mb->quant, dcscalar); | ||
198 : | } | ||
199 : | else | ||
200 : | { | ||
201 : | dequant4_intra(data, block, mb->quant, dcscalar); | ||
202 : | } | ||
203 : | stop_iquant_timer(); | ||
204 : | |||
205 : | start_timer(); | ||
206 : | idct(data); | ||
207 : | stop_idct_timer(); | ||
208 : | |||
209 : | start_timer(); | ||
210 : | if (k < 4) | ||
211 : | { | ||
212 : | transfer_16to8copy(dec->cur.y + (16*y*dec->edged_width) + 16*x + (4*(k&2)*dec->edged_width) + 8*(k&1), data, dec->edged_width); | ||
213 : | } | ||
214 : | else if (k == 4) | ||
215 : | { | ||
216 : | transfer_16to8copy(dec->cur.u+ 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); | ||
217 : | } | ||
218 : | else // if (k == 5) | ||
219 : | { | ||
220 : | transfer_16to8copy(dec->cur.v + 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); | ||
221 : | } | ||
222 : | stop_transfer_timer(); | ||
223 : | } | ||
224 : | } | ||
225 : | |||
226 : | |||
227 : | |||
228 : | |||
229 : | |||
230 : | #define SIGN(X) (((X)>0)?1:-1) | ||
231 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
232 : | static const uint32_t roundtab[16] = | ||
233 : | { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }; | ||
234 : | |||
235 : | |||
236 : | // decode an inter macroblock | ||
237 : | |||
238 : | void decoder_mbinter(DECODER * dec, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int rounding) | ||
239 : | { | ||
240 : | const uint32_t stride = dec->edged_width; | ||
241 : | const uint32_t stride2 = dec->edged_width / 2; | ||
242 : | int uv_dx, uv_dy; | ||
243 : | uint32_t k; | ||
244 : | |||
245 : | if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) | ||
246 : | { | ||
247 : | uv_dx = mb->mvs[0].x; | ||
248 : | uv_dy = mb->mvs[0].y; | ||
249 : | |||
250 : | uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; | ||
251 : | uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; | ||
252 : | } | ||
253 : | else | ||
254 : | { | ||
255 : | int sum; | ||
256 : | sum = mb->mvs[0].x + mb->mvs[1].x + mb->mvs[2].x + mb->mvs[3].x; | ||
257 : | uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); | ||
258 : | |||
259 : | sum = mb->mvs[0].y + mb->mvs[1].y + mb->mvs[2].y + mb->mvs[3].y; | ||
260 : | uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); | ||
261 : | } | ||
262 : | |||
263 : | start_timer(); | ||
264 : | interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y , mb->mvs[0].x, mb->mvs[0].y, stride, rounding); | ||
265 : | interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y , mb->mvs[1].x, mb->mvs[1].y, stride, rounding); | ||
266 : | interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y + 8, mb->mvs[2].x, mb->mvs[2].y, stride, rounding); | ||
267 : | interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y + 8, mb->mvs[3].x, mb->mvs[3].y, stride, rounding); | ||
268 : | interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); | ||
269 : | interpolate8x8_switch(dec->cur.v, dec->refn.v, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); | ||
270 : | stop_comp_timer(); | ||
271 : | |||
272 : | |||
273 : | for (k = 0; k < 6; k++) | ||
274 : | { | ||
275 : | Isibaar | 42 | CACHE_ALIGN int16_t block[64]; |
276 : | CACHE_ALIGN int16_t data[64]; | ||
277 : | Isibaar | 3 | |
278 : | if (cbp & (1 << (5-k))) // coded | ||
279 : | { | ||
280 : | memset(block, 0, 64 * sizeof(int16_t)); // clear | ||
281 : | |||
282 : | start_timer(); | ||
283 : | get_inter_block(bs, block); | ||
284 : | stop_coding_timer(); | ||
285 : | |||
286 : | start_timer(); | ||
287 : | if (dec->quant_type == 0) | ||
288 : | { | ||
289 : | dequant_inter(data, block, mb->quant); | ||
290 : | } | ||
291 : | else | ||
292 : | { | ||
293 : | dequant4_inter(data, block, mb->quant); | ||
294 : | } | ||
295 : | stop_iquant_timer(); | ||
296 : | |||
297 : | start_timer(); | ||
298 : | idct(data); | ||
299 : | stop_idct_timer(); | ||
300 : | |||
301 : | start_timer(); | ||
302 : | if (k < 4) | ||
303 : | { | ||
304 : | transfer_16to8add(dec->cur.y + (16*y + 4*(k&2))*stride + 16*x + 8*(k&1), data, stride); | ||
305 : | } | ||
306 : | else if (k == 4) | ||
307 : | { | ||
308 : | transfer_16to8add(dec->cur.u + 8*y*stride2 + 8*x, data, stride2); | ||
309 : | } | ||
310 : | else // k == 5 | ||
311 : | { | ||
312 : | transfer_16to8add(dec->cur.v + 8*y*stride2 + 8*x, data, stride2); | ||
313 : | } | ||
314 : | stop_transfer_timer(); | ||
315 : | } | ||
316 : | } | ||
317 : | } | ||
318 : | |||
319 : | |||
320 : | |||
321 : | void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) | ||
322 : | { | ||
323 : | uint32_t x, y; | ||
324 : | |||
325 : | for (y = 0; y < dec->mb_height; y++) | ||
326 : | { | ||
327 : | for (x = 0; x < dec->mb_width; x++) | ||
328 : | { | ||
329 : | MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; | ||
330 : | |||
331 : | uint32_t mcbpc; | ||
332 : | uint32_t cbpc; | ||
333 : | uint32_t acpred_flag; | ||
334 : | uint32_t cbpy; | ||
335 : | uint32_t cbp; | ||
336 : | |||
337 : | mcbpc = get_mcbpc_intra(bs); | ||
338 : | mb->mode = mcbpc & 7; | ||
339 : | cbpc = (mcbpc >> 4); | ||
340 : | |||
341 : | acpred_flag = BitstreamGetBit(bs); | ||
342 : | |||
343 : | if (mb->mode == MODE_STUFFING) | ||
344 : | { | ||
345 : | DEBUG("-- STUFFING ?"); | ||
346 : | continue; | ||
347 : | } | ||
348 : | |||
349 : | cbpy = get_cbpy(bs, 1); | ||
350 : | cbp = (cbpy << 2) | cbpc; | ||
351 : | |||
352 : | if (mb->mode == MODE_INTRA_Q) | ||
353 : | { | ||
354 : | quant += dquant_table[BitstreamGetBits(bs,2)]; | ||
355 : | if (quant > 31) | ||
356 : | { | ||
357 : | quant = 31; | ||
358 : | } | ||
359 : | else if (quant < 1) | ||
360 : | { | ||
361 : | quant = 1; | ||
362 : | } | ||
363 : | } | ||
364 : | mb->quant = quant; | ||
365 : | |||
366 : | |||
367 : | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); | ||
368 : | } | ||
369 : | } | ||
370 : | } | ||
371 : | |||
372 : | |||
373 : | void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) | ||
374 : | { | ||
375 : | int scale_fac = 1 << (fcode - 1); | ||
376 : | int high = (32 * scale_fac) - 1; | ||
377 : | int low = ((-32) * scale_fac); | ||
378 : | int range = (64 * scale_fac); | ||
379 : | |||
380 : | VECTOR pmv[4]; | ||
381 : | uint32_t psad[4]; | ||
382 : | |||
383 : | int mv_x, mv_y; | ||
384 : | int pmv_x, pmv_y; | ||
385 : | |||
386 : | |||
387 : | get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); | ||
388 : | |||
389 : | pmv_x = pmv[0].x; | ||
390 : | pmv_y = pmv[0].y; | ||
391 : | |||
392 : | mv_x = get_mv(bs, fcode); | ||
393 : | mv_y = get_mv(bs, fcode); | ||
394 : | |||
395 : | mv_x += pmv_x; | ||
396 : | mv_y += pmv_y; | ||
397 : | |||
398 : | if (mv_x < low) | ||
399 : | { | ||
400 : | mv_x += range; | ||
401 : | } | ||
402 : | else if (mv_x > high) | ||
403 : | { | ||
404 : | mv_x -= range; | ||
405 : | } | ||
406 : | |||
407 : | if (mv_y < low) | ||
408 : | { | ||
409 : | mv_y += range; | ||
410 : | } | ||
411 : | else if (mv_y > high) | ||
412 : | { | ||
413 : | mv_y -= range; | ||
414 : | } | ||
415 : | |||
416 : | mv->x = mv_x; | ||
417 : | mv->y = mv_y; | ||
418 : | |||
419 : | } | ||
420 : | |||
421 : | |||
422 : | void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) | ||
423 : | { | ||
424 : | uint32_t x, y; | ||
425 : | |||
426 : | image_swap(&dec->cur, &dec->refn); | ||
427 : | |||
428 : | start_timer(); | ||
429 : | image_setedges(&dec->refn, dec->edged_width, dec->edged_height, dec->width, dec->height); | ||
430 : | stop_edges_timer(); | ||
431 : | |||
432 : | for (y = 0; y < dec->mb_height; y++) | ||
433 : | { | ||
434 : | for (x = 0; x < dec->mb_width; x++) | ||
435 : | { | ||
436 : | MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; | ||
437 : | |||
438 : | if (!BitstreamGetBit(bs)) // not_coded | ||
439 : | { | ||
440 : | uint32_t mcbpc; | ||
441 : | uint32_t cbpc; | ||
442 : | uint32_t acpred_flag; | ||
443 : | uint32_t cbpy; | ||
444 : | uint32_t cbp; | ||
445 : | uint32_t intra; | ||
446 : | |||
447 : | mcbpc = get_mcbpc_inter(bs); | ||
448 : | mb->mode = mcbpc & 7; | ||
449 : | cbpc = (mcbpc >> 4); | ||
450 : | edgomez | 12 | acpred_flag = 0; |
451 : | Isibaar | 3 | |
452 : | intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); | ||
453 : | |||
454 : | if (intra) | ||
455 : | { | ||
456 : | acpred_flag = BitstreamGetBit(bs); | ||
457 : | } | ||
458 : | |||
459 : | if (mb->mode == MODE_STUFFING) | ||
460 : | { | ||
461 : | DEBUG("-- STUFFING ?"); | ||
462 : | continue; | ||
463 : | } | ||
464 : | |||
465 : | cbpy = get_cbpy(bs, intra); | ||
466 : | cbp = (cbpy << 2) | cbpc; | ||
467 : | |||
468 : | if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) | ||
469 : | { | ||
470 : | quant += dquant_table[BitstreamGetBits(bs,2)]; | ||
471 : | if (quant > 31) | ||
472 : | { | ||
473 : | quant = 31; | ||
474 : | } | ||
475 : | else if (mb->quant < 1) | ||
476 : | { | ||
477 : | quant = 1; | ||
478 : | } | ||
479 : | } | ||
480 : | mb->quant = quant; | ||
481 : | |||
482 : | if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) | ||
483 : | { | ||
484 : | |||
485 : | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); | ||
486 : | mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; | ||
487 : | mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; | ||
488 : | } | ||
489 : | else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) | ||
490 : | { | ||
491 : | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); | ||
492 : | get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); | ||
493 : | get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); | ||
494 : | get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); | ||
495 : | } | ||
496 : | else // MODE_INTRA, MODE_INTRA_Q | ||
497 : | { | ||
498 : | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; | ||
499 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; | ||
500 : | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); | ||
501 : | continue; | ||
502 : | } | ||
503 : | |||
504 : | decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); | ||
505 : | } | ||
506 : | else // not coded | ||
507 : | { | ||
508 : | |||
509 : | mb->mode = MODE_NOT_CODED; | ||
510 : | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; | ||
511 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; | ||
512 : | |||
513 : | // copy macroblock directly from ref to cur | ||
514 : | |||
515 : | start_timer(); | ||
516 : | |||
517 : | transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), | ||
518 : | dec->refn.y + (16*y)*dec->edged_width + (16*x), | ||
519 : | dec->edged_width); | ||
520 : | |||
521 : | transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), | ||
522 : | dec->refn.y + (16*y)*dec->edged_width + (16*x+8), | ||
523 : | dec->edged_width); | ||
524 : | |||
525 : | transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), | ||
526 : | dec->refn.y + (16*y+8)*dec->edged_width + (16*x), | ||
527 : | dec->edged_width); | ||
528 : | |||
529 : | transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), | ||
530 : | dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), | ||
531 : | dec->edged_width); | ||
532 : | |||
533 : | transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), | ||
534 : | dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), | ||
535 : | dec->edged_width/2); | ||
536 : | |||
537 : | transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), | ||
538 : | dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), | ||
539 : | dec->edged_width/2); | ||
540 : | |||
541 : | stop_transfer_timer(); | ||
542 : | } | ||
543 : | } | ||
544 : | } | ||
545 : | } | ||
546 : | |||
547 : | int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) | ||
548 : | { | ||
549 : | Bitstream bs; | ||
550 : | uint32_t rounding; | ||
551 : | uint32_t quant; | ||
552 : | uint32_t fcode; | ||
553 : | uint32_t intra_dc_threshold; | ||
554 : | |||
555 : | start_global_timer(); | ||
556 : | |||
557 : | BitstreamInit(&bs, frame->bitstream, frame->length); | ||
558 : | |||
559 : | switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) | ||
560 : | { | ||
561 : | case P_VOP : | ||
562 : | decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); | ||
563 : | break; | ||
564 : | |||
565 : | case I_VOP : | ||
566 : | //DEBUG1("",intra_dc_threshold); | ||
567 : | decoder_iframe(dec, &bs, quant, intra_dc_threshold); | ||
568 : | break; | ||
569 : | |||
570 : | case B_VOP : // ignore | ||
571 : | break; | ||
572 : | |||
573 : | case N_VOP : // vop not coded | ||
574 : | break; | ||
575 : | |||
576 : | default : | ||
577 : | return XVID_ERR_FAIL; | ||
578 : | } | ||
579 : | |||
580 : | frame->length = BitstreamPos(&bs) / 8; | ||
581 : | |||
582 : | start_timer(); | ||
583 : | image_output(&dec->cur, dec->width, dec->height, dec->edged_width, | ||
584 : | frame->image, frame->stride, frame->colorspace); | ||
585 : | stop_conv_timer(); | ||
586 : | |||
587 : | emms(); | ||
588 : | |||
589 : | stop_global_timer(); | ||
590 : | |||
591 : | return XVID_ERR_OK; | ||
592 : | } |
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