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1 : | Isibaar | 1.1 | /************************************************************************** |
2 : | * | ||
3 : | edgomez | 1.12 | * XVID MPEG-4 VIDEO CODEC |
4 : | * - Decoder main module - | ||
5 : | Isibaar | 1.1 | * |
6 : | edgomez | 1.42 | * Copyright(C) 2002 MinChen <chenm001@163.com> |
7 : | * 2002 Peter Ross <pross@xvid.org> | ||
8 : | * | ||
9 : | edgomez | 1.43 | * This file is part of XviD, a free MPEG-4 video encoder/decoder |
10 : | edgomez | 1.12 | * |
11 : | edgomez | 1.43 | * XviD is free software; you can redistribute it and/or modify it |
12 : | * under the terms of the GNU General Public License as published by | ||
13 : | edgomez | 1.12 | * the Free Software Foundation; either version 2 of the License, or |
14 : | * (at your option) any later version. | ||
15 : | * | ||
16 : | * This program is distributed in the hope that it will be useful, | ||
17 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
18 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
19 : | * GNU General Public License for more details. | ||
20 : | * | ||
21 : | * You should have received a copy of the GNU General Public License | ||
22 : | * along with this program; if not, write to the Free Software | ||
23 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
24 : | Isibaar | 1.1 | * |
25 : | edgomez | 1.43 | * Under section 8 of the GNU General Public License, the copyright |
26 : | * holders of XVID explicitly forbid distribution in the following | ||
27 : | * countries: | ||
28 : | * | ||
29 : | * - Japan | ||
30 : | * - United States of America | ||
31 : | * | ||
32 : | * Linking XviD statically or dynamically with other modules is making a | ||
33 : | * combined work based on XviD. Thus, the terms and conditions of the | ||
34 : | * GNU General Public License cover the whole combination. | ||
35 : | * | ||
36 : | * As a special exception, the copyright holders of XviD give you | ||
37 : | * permission to link XviD with independent modules that communicate with | ||
38 : | * XviD solely through the VFW1.1 and DShow interfaces, regardless of the | ||
39 : | * license terms of these independent modules, and to copy and distribute | ||
40 : | * the resulting combined work under terms of your choice, provided that | ||
41 : | * every copy of the combined work is accompanied by a complete copy of | ||
42 : | * the source code of XviD (the version of XviD used to produce the | ||
43 : | * combined work), being distributed under the terms of the GNU General | ||
44 : | * Public License plus this exception. An independent module is a module | ||
45 : | * which is not derived from or based on XviD. | ||
46 : | * | ||
47 : | * Note that people who make modified versions of XviD are not obligated | ||
48 : | * to grant this special exception for their modified versions; it is | ||
49 : | * their choice whether to do so. The GNU General Public License gives | ||
50 : | * permission to release a modified version without this exception; this | ||
51 : | * exception also makes it possible to release a modified version which | ||
52 : | * carries forward this exception. | ||
53 : | edgomez | 1.12 | * |
54 : | edgomez | 1.46 | * $Id: decoder.c,v 1.45 2002/12/15 01:21:12 edgomez Exp $ |
55 : | Isibaar | 1.1 | * |
56 : | *************************************************************************/ | ||
57 : | |||
58 : | #include <stdlib.h> | ||
59 : | edgomez | 1.12 | #include <string.h> |
60 : | Isibaar | 1.1 | |
61 : | chenm001 | 1.27 | #ifdef BFRAMES_DEC_DEBUG |
62 : | #define BFRAMES_DEC | ||
63 : | #endif | ||
64 : | |||
65 : | Isibaar | 1.1 | #include "xvid.h" |
66 : | #include "portab.h" | ||
67 : | |||
68 : | #include "decoder.h" | ||
69 : | #include "bitstream/bitstream.h" | ||
70 : | #include "bitstream/mbcoding.h" | ||
71 : | |||
72 : | #include "quant/quant_h263.h" | ||
73 : | #include "quant/quant_mpeg4.h" | ||
74 : | #include "dct/idct.h" | ||
75 : | #include "dct/fdct.h" | ||
76 : | #include "utils/mem_transfer.h" | ||
77 : | #include "image/interpolate8x8.h" | ||
78 : | |||
79 : | #include "bitstream/mbcoding.h" | ||
80 : | #include "prediction/mbprediction.h" | ||
81 : | #include "utils/timer.h" | ||
82 : | #include "utils/emms.h" | ||
83 : | |||
84 : | #include "image/image.h" | ||
85 : | #include "image/colorspace.h" | ||
86 : | Isibaar | 1.3 | #include "utils/mem_align.h" |
87 : | Isibaar | 1.1 | |
88 : | edgomez | 1.19 | int |
89 : | decoder_create(XVID_DEC_PARAM * param) | ||
90 : | Isibaar | 1.1 | { |
91 : | edgomez | 1.19 | DECODER *dec; |
92 : | Isibaar | 1.1 | |
93 : | Isibaar | 1.4 | dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
94 : | edgomez | 1.19 | if (dec == NULL) { |
95 : | Isibaar | 1.1 | return XVID_ERR_MEMORY; |
96 : | } | ||
97 : | param->handle = dec; | ||
98 : | |||
99 : | dec->width = param->width; | ||
100 : | dec->height = param->height; | ||
101 : | |||
102 : | dec->mb_width = (dec->width + 15) / 16; | ||
103 : | dec->mb_height = (dec->height + 15) / 16; | ||
104 : | |||
105 : | dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; | ||
106 : | dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; | ||
107 : | Isibaar | 1.20 | dec->low_delay = 0; |
108 : | edgomez | 1.19 | |
109 : | if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { | ||
110 : | Isibaar | 1.3 | xvid_free(dec); |
111 : | Isibaar | 1.1 | return XVID_ERR_MEMORY; |
112 : | } | ||
113 : | |||
114 : | edgomez | 1.19 | if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
115 : | Isibaar | 1.1 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
116 : | Isibaar | 1.3 | xvid_free(dec); |
117 : | Isibaar | 1.1 | return XVID_ERR_MEMORY; |
118 : | } | ||
119 : | edgomez | 1.44 | /* add by chenm001 <chenm001@163.com> */ |
120 : | /* for support B-frame to reference last 2 frame */ | ||
121 : | edgomez | 1.19 | if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
122 : | chenm001 | 1.11 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
123 : | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); | ||
124 : | xvid_free(dec); | ||
125 : | return XVID_ERR_MEMORY; | ||
126 : | } | ||
127 : | edgomez | 1.19 | if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
128 : | chenm001 | 1.14 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
129 : | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); | ||
130 : | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); | ||
131 : | xvid_free(dec); | ||
132 : | return XVID_ERR_MEMORY; | ||
133 : | } | ||
134 : | Isibaar | 1.1 | |
135 : | edgomez | 1.19 | dec->mbs = |
136 : | xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, | ||
137 : | CACHE_LINE); | ||
138 : | if (dec->mbs == NULL) { | ||
139 : | Isibaar | 1.1 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
140 : | chenm001 | 1.14 | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
141 : | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); | ||
142 : | image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); | ||
143 : | xvid_free(dec); | ||
144 : | return XVID_ERR_MEMORY; | ||
145 : | } | ||
146 : | Isibaar | 1.20 | |
147 : | memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); | ||
148 : | |||
149 : | edgomez | 1.44 | /* add by chenm001 <chenm001@163.com> */ |
150 : | /* for skip MB flag */ | ||
151 : | edgomez | 1.19 | dec->last_mbs = |
152 : | xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, | ||
153 : | CACHE_LINE); | ||
154 : | if (dec->last_mbs == NULL) { | ||
155 : | chenm001 | 1.14 | xvid_free(dec->mbs); |
156 : | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); | ||
157 : | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); | ||
158 : | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); | ||
159 : | image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); | ||
160 : | Isibaar | 1.3 | xvid_free(dec); |
161 : | Isibaar | 1.1 | return XVID_ERR_MEMORY; |
162 : | } | ||
163 : | Isibaar | 1.20 | |
164 : | memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); | ||
165 : | Isibaar | 1.1 | |
166 : | init_timer(); | ||
167 : | |||
168 : | edgomez | 1.44 | /* add by chenm001 <chenm001@163.com> */ |
169 : | /* for support B-frame to save reference frame's time */ | ||
170 : | chenm001 | 1.14 | dec->frames = -1; |
171 : | dec->time = dec->time_base = dec->last_time_base = 0; | ||
172 : | edgomez | 1.19 | |
173 : | Isibaar | 1.1 | return XVID_ERR_OK; |
174 : | } | ||
175 : | |||
176 : | |||
177 : | edgomez | 1.19 | int |
178 : | decoder_destroy(DECODER * dec) | ||
179 : | Isibaar | 1.1 | { |
180 : | chenm001 | 1.14 | xvid_free(dec->last_mbs); |
181 : | Isibaar | 1.3 | xvid_free(dec->mbs); |
182 : | chenm001 | 1.11 | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
183 : | chenm001 | 1.14 | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
184 : | image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); | ||
185 : | Isibaar | 1.1 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
186 : | Isibaar | 1.3 | xvid_free(dec); |
187 : | Isibaar | 1.1 | |
188 : | write_timer(); | ||
189 : | return XVID_ERR_OK; | ||
190 : | } | ||
191 : | |||
192 : | |||
193 : | |||
194 : | edgomez | 1.19 | static const int32_t dquant_table[4] = { |
195 : | Isibaar | 1.1 | -1, -2, 1, 2 |
196 : | }; | ||
197 : | |||
198 : | |||
199 : | chenm001 | 1.14 | |
200 : | |||
201 : | edgomez | 1.44 | /* decode an intra macroblock */ |
202 : | Isibaar | 1.1 | |
203 : | edgomez | 1.19 | void |
204 : | decoder_mbintra(DECODER * dec, | ||
205 : | MACROBLOCK * pMB, | ||
206 : | const uint32_t x_pos, | ||
207 : | const uint32_t y_pos, | ||
208 : | const uint32_t acpred_flag, | ||
209 : | const uint32_t cbp, | ||
210 : | Bitstream * bs, | ||
211 : | const uint32_t quant, | ||
212 : | chenm001 | 1.26 | const uint32_t intra_dc_threshold, |
213 : | const unsigned int bound) | ||
214 : | Isibaar | 1.1 | { |
215 : | edgomez | 1.7 | |
216 : | DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); | ||
217 : | edgomez | 1.19 | DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
218 : | edgomez | 1.7 | |
219 : | h | 1.8 | uint32_t stride = dec->edged_width; |
220 : | uint32_t stride2 = stride / 2; | ||
221 : | uint32_t next_block = stride * 8; | ||
222 : | h | 1.5 | uint32_t i; |
223 : | uint32_t iQuant = pMB->quant; | ||
224 : | uint8_t *pY_Cur, *pU_Cur, *pV_Cur; | ||
225 : | |||
226 : | edgomez | 1.7 | pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
227 : | h | 1.8 | pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
228 : | pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
229 : | edgomez | 1.7 | |
230 : | edgomez | 1.44 | memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */ |
231 : | h | 1.5 | |
232 : | edgomez | 1.19 | for (i = 0; i < 6; i++) { |
233 : | h | 1.5 | uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
234 : | Isibaar | 1.1 | int16_t predictors[8]; |
235 : | int start_coeff; | ||
236 : | |||
237 : | start_timer(); | ||
238 : | edgomez | 1.19 | predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
239 : | chenm001 | 1.26 | iQuant, iDcScaler, predictors, bound); |
240 : | edgomez | 1.19 | if (!acpred_flag) { |
241 : | h | 1.5 | pMB->acpred_directions[i] = 0; |
242 : | Isibaar | 1.1 | } |
243 : | stop_prediction_timer(); | ||
244 : | |||
245 : | edgomez | 1.19 | if (quant < intra_dc_threshold) { |
246 : | Isibaar | 1.1 | int dc_size; |
247 : | int dc_dif; | ||
248 : | |||
249 : | edgomez | 1.19 | dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
250 : | dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; | ||
251 : | Isibaar | 1.1 | |
252 : | edgomez | 1.19 | if (dc_size > 8) { |
253 : | edgomez | 1.44 | BitstreamSkip(bs, 1); /* marker */ |
254 : | Isibaar | 1.1 | } |
255 : | edgomez | 1.19 | |
256 : | block[i * 64 + 0] = dc_dif; | ||
257 : | Isibaar | 1.1 | start_coeff = 1; |
258 : | chenm001 | 1.26 | |
259 : | DPRINTF(DPRINTF_COEFF,"block[0] %i", dc_dif); | ||
260 : | edgomez | 1.19 | } else { |
261 : | Isibaar | 1.1 | start_coeff = 0; |
262 : | } | ||
263 : | |||
264 : | start_timer(); | ||
265 : | edgomez | 1.44 | if (cbp & (1 << (5 - i))) /* coded */ |
266 : | Isibaar | 1.1 | { |
267 : | edgomez | 1.19 | get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
268 : | start_coeff); | ||
269 : | Isibaar | 1.1 | } |
270 : | stop_coding_timer(); | ||
271 : | |||
272 : | start_timer(); | ||
273 : | edgomez | 1.19 | add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors); |
274 : | Isibaar | 1.1 | stop_prediction_timer(); |
275 : | |||
276 : | start_timer(); | ||
277 : | edgomez | 1.19 | if (dec->quant_type == 0) { |
278 : | dequant_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler); | ||
279 : | } else { | ||
280 : | dequant4_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler); | ||
281 : | Isibaar | 1.1 | } |
282 : | stop_iquant_timer(); | ||
283 : | |||
284 : | start_timer(); | ||
285 : | edgomez | 1.19 | idct(&data[i * 64]); |
286 : | Isibaar | 1.1 | stop_idct_timer(); |
287 : | h | 1.5 | } |
288 : | Isibaar | 1.1 | |
289 : | edgomez | 1.19 | if (dec->interlacing && pMB->field_dct) { |
290 : | h | 1.8 | next_block = stride; |
291 : | stride *= 2; | ||
292 : | Isibaar | 1.1 | } |
293 : | h | 1.5 | |
294 : | start_timer(); | ||
295 : | edgomez | 1.19 | transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
296 : | transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); | ||
297 : | transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); | ||
298 : | transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); | ||
299 : | transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); | ||
300 : | transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); | ||
301 : | h | 1.5 | stop_transfer_timer(); |
302 : | Isibaar | 1.1 | } |
303 : | |||
304 : | |||
305 : | |||
306 : | |||
307 : | |||
308 : | #define SIGN(X) (((X)>0)?1:-1) | ||
309 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
310 : | static const uint32_t roundtab[16] = | ||
311 : | edgomez | 1.19 | { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }; |
312 : | Isibaar | 1.1 | |
313 : | |||
314 : | edgomez | 1.44 | /* decode an inter macroblock */ |
315 : | Isibaar | 1.1 | |
316 : | edgomez | 1.19 | void |
317 : | decoder_mbinter(DECODER * dec, | ||
318 : | const MACROBLOCK * pMB, | ||
319 : | const uint32_t x_pos, | ||
320 : | const uint32_t y_pos, | ||
321 : | const uint32_t acpred_flag, | ||
322 : | const uint32_t cbp, | ||
323 : | Bitstream * bs, | ||
324 : | const uint32_t quant, | ||
325 : | const uint32_t rounding) | ||
326 : | Isibaar | 1.1 | { |
327 : | edgomez | 1.7 | |
328 : | edgomez | 1.19 | DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
329 : | edgomez | 1.7 | DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
330 : | h | 1.5 | |
331 : | h | 1.8 | uint32_t stride = dec->edged_width; |
332 : | uint32_t stride2 = stride / 2; | ||
333 : | uint32_t next_block = stride * 8; | ||
334 : | edgomez | 1.7 | uint32_t i; |
335 : | uint32_t iQuant = pMB->quant; | ||
336 : | h | 1.5 | uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
337 : | Isibaar | 1.1 | int uv_dx, uv_dy; |
338 : | |||
339 : | edgomez | 1.7 | pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
340 : | h | 1.8 | pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
341 : | pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
342 : | h | 1.5 | |
343 : | edgomez | 1.19 | if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
344 : | h | 1.5 | uv_dx = pMB->mvs[0].x; |
345 : | uv_dy = pMB->mvs[0].y; | ||
346 : | Isibaar | 1.1 | |
347 : | uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; | ||
348 : | uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; | ||
349 : | edgomez | 1.19 | } else { |
350 : | Isibaar | 1.1 | int sum; |
351 : | Isibaar | 1.34 | sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
352 : | edgomez | 1.19 | |
353 : | Isibaar | 1.34 | uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
354 : | Isibaar | 1.1 | |
355 : | h | 1.5 | sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
356 : | Isibaar | 1.34 | |
357 : | uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); | ||
358 : | Isibaar | 1.1 | } |
359 : | |||
360 : | start_timer(); | ||
361 : | edgomez | 1.46 | interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
362 : | pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); | ||
363 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, | ||
364 : | pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); | ||
365 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, | ||
366 : | pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); | ||
367 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, | ||
368 : | pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); | ||
369 : | edgomez | 1.19 | interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
370 : | uv_dx, uv_dy, stride2, rounding); | ||
371 : | interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, | ||
372 : | uv_dx, uv_dy, stride2, rounding); | ||
373 : | Isibaar | 1.1 | stop_comp_timer(); |
374 : | |||
375 : | edgomez | 1.19 | for (i = 0; i < 6; i++) { |
376 : | edgomez | 1.44 | if (cbp & (1 << (5 - i))) /* coded */ |
377 : | Isibaar | 1.1 | { |
378 : | edgomez | 1.44 | memset(&block[i * 64], 0, 64 * sizeof(int16_t)); /* clear */ |
379 : | Isibaar | 1.1 | |
380 : | start_timer(); | ||
381 : | edgomez | 1.19 | get_inter_block(bs, &block[i * 64]); |
382 : | Isibaar | 1.1 | stop_coding_timer(); |
383 : | |||
384 : | start_timer(); | ||
385 : | edgomez | 1.19 | if (dec->quant_type == 0) { |
386 : | dequant_inter(&data[i * 64], &block[i * 64], iQuant); | ||
387 : | } else { | ||
388 : | dequant4_inter(&data[i * 64], &block[i * 64], iQuant); | ||
389 : | Isibaar | 1.1 | } |
390 : | stop_iquant_timer(); | ||
391 : | |||
392 : | start_timer(); | ||
393 : | edgomez | 1.19 | idct(&data[i * 64]); |
394 : | Isibaar | 1.1 | stop_idct_timer(); |
395 : | h | 1.5 | } |
396 : | } | ||
397 : | Isibaar | 1.1 | |
398 : | edgomez | 1.19 | if (dec->interlacing && pMB->field_dct) { |
399 : | h | 1.8 | next_block = stride; |
400 : | stride *= 2; | ||
401 : | Isibaar | 1.1 | } |
402 : | h | 1.5 | |
403 : | start_timer(); | ||
404 : | if (cbp & 32) | ||
405 : | edgomez | 1.19 | transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
406 : | h | 1.5 | if (cbp & 16) |
407 : | edgomez | 1.19 | transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
408 : | h | 1.5 | if (cbp & 8) |
409 : | edgomez | 1.19 | transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
410 : | h | 1.5 | if (cbp & 4) |
411 : | edgomez | 1.19 | transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
412 : | h | 1.5 | if (cbp & 2) |
413 : | edgomez | 1.19 | transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
414 : | h | 1.5 | if (cbp & 1) |
415 : | edgomez | 1.19 | transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
416 : | h | 1.5 | stop_transfer_timer(); |
417 : | Isibaar | 1.1 | } |
418 : | |||
419 : | |||
420 : | edgomez | 1.19 | void |
421 : | decoder_iframe(DECODER * dec, | ||
422 : | Bitstream * bs, | ||
423 : | int quant, | ||
424 : | int intra_dc_threshold) | ||
425 : | Isibaar | 1.1 | { |
426 : | chenm001 | 1.26 | uint32_t bound; |
427 : | uint32_t x, y; | ||
428 : | chenm001 | 1.25 | |
429 : | chenm001 | 1.26 | bound = 0; |
430 : | edgomez | 1.7 | |
431 : | edgomez | 1.19 | for (y = 0; y < dec->mb_height; y++) { |
432 : | for (x = 0; x < dec->mb_width; x++) { | ||
433 : | chenm001 | 1.26 | MACROBLOCK *mb; |
434 : | Isibaar | 1.1 | uint32_t mcbpc; |
435 : | uint32_t cbpc; | ||
436 : | uint32_t acpred_flag; | ||
437 : | uint32_t cbpy; | ||
438 : | uint32_t cbp; | ||
439 : | |||
440 : | chenm001 | 1.26 | while (BitstreamShowBits(bs, 9) == 1) |
441 : | BitstreamSkip(bs, 9); | ||
442 : | |||
443 : | if (check_resync_marker(bs, 0)) | ||
444 : | { | ||
445 : | bound = read_video_packet_header(bs, 0, &quant); | ||
446 : | x = bound % dec->mb_width; | ||
447 : | y = bound / dec->mb_width; | ||
448 : | } | ||
449 : | mb = &dec->mbs[y * dec->mb_width + x]; | ||
450 : | |||
451 : | DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); | ||
452 : | |||
453 : | Isibaar | 1.1 | mcbpc = get_mcbpc_intra(bs); |
454 : | mb->mode = mcbpc & 7; | ||
455 : | cbpc = (mcbpc >> 4); | ||
456 : | |||
457 : | acpred_flag = BitstreamGetBit(bs); | ||
458 : | |||
459 : | cbpy = get_cbpy(bs, 1); | ||
460 : | cbp = (cbpy << 2) | cbpc; | ||
461 : | |||
462 : | edgomez | 1.19 | if (mb->mode == MODE_INTRA_Q) { |
463 : | quant += dquant_table[BitstreamGetBits(bs, 2)]; | ||
464 : | if (quant > 31) { | ||
465 : | Isibaar | 1.1 | quant = 31; |
466 : | edgomez | 1.19 | } else if (quant < 1) { |
467 : | Isibaar | 1.1 | quant = 1; |
468 : | } | ||
469 : | } | ||
470 : | mb->quant = quant; | ||
471 : | chenm001 | 1.30 | mb->mvs[0].x = mb->mvs[0].y = |
472 : | mb->mvs[1].x = mb->mvs[1].y = | ||
473 : | mb->mvs[2].x = mb->mvs[2].y = | ||
474 : | mb->mvs[3].x = mb->mvs[3].y =0; | ||
475 : | h | 1.5 | |
476 : | edgomez | 1.19 | if (dec->interlacing) { |
477 : | h | 1.5 | mb->field_dct = BitstreamGetBit(bs); |
478 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "deci: field_dct: %d", mb->field_dct); |
479 : | h | 1.5 | } |
480 : | Isibaar | 1.1 | |
481 : | edgomez | 1.19 | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
482 : | chenm001 | 1.26 | intra_dc_threshold, bound); |
483 : | Isibaar | 1.1 | } |
484 : | albeu | 1.32 | if(dec->out_frm) |
485 : | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); | ||
486 : | |||
487 : | Isibaar | 1.1 | } |
488 : | edgomez | 1.7 | |
489 : | Isibaar | 1.1 | } |
490 : | |||
491 : | |||
492 : | edgomez | 1.19 | void |
493 : | get_motion_vector(DECODER * dec, | ||
494 : | Bitstream * bs, | ||
495 : | int x, | ||
496 : | int y, | ||
497 : | int k, | ||
498 : | VECTOR * mv, | ||
499 : | chenm001 | 1.26 | int fcode, |
500 : | const int bound) | ||
501 : | Isibaar | 1.1 | { |
502 : | edgomez | 1.7 | |
503 : | Isibaar | 1.1 | int scale_fac = 1 << (fcode - 1); |
504 : | int high = (32 * scale_fac) - 1; | ||
505 : | int low = ((-32) * scale_fac); | ||
506 : | int range = (64 * scale_fac); | ||
507 : | |||
508 : | chenm001 | 1.26 | VECTOR pmv; |
509 : | Isibaar | 1.1 | int mv_x, mv_y; |
510 : | |||
511 : | chenm001 | 1.26 | pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
512 : | Isibaar | 1.1 | |
513 : | mv_x = get_mv(bs, fcode); | ||
514 : | mv_y = get_mv(bs, fcode); | ||
515 : | edgomez | 1.19 | |
516 : | chenm001 | 1.26 | DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv.x, pmv.y); |
517 : | |||
518 : | mv_x += pmv.x; | ||
519 : | mv_y += pmv.y; | ||
520 : | Isibaar | 1.1 | |
521 : | edgomez | 1.19 | if (mv_x < low) { |
522 : | Isibaar | 1.1 | mv_x += range; |
523 : | edgomez | 1.19 | } else if (mv_x > high) { |
524 : | Isibaar | 1.1 | mv_x -= range; |
525 : | } | ||
526 : | |||
527 : | edgomez | 1.19 | if (mv_y < low) { |
528 : | Isibaar | 1.1 | mv_y += range; |
529 : | edgomez | 1.19 | } else if (mv_y > high) { |
530 : | Isibaar | 1.1 | mv_y -= range; |
531 : | } | ||
532 : | |||
533 : | mv->x = mv_x; | ||
534 : | mv->y = mv_y; | ||
535 : | |||
536 : | } | ||
537 : | |||
538 : | |||
539 : | edgomez | 1.19 | void |
540 : | decoder_pframe(DECODER * dec, | ||
541 : | Bitstream * bs, | ||
542 : | int rounding, | ||
543 : | int quant, | ||
544 : | int fcode, | ||
545 : | int intra_dc_threshold) | ||
546 : | Isibaar | 1.1 | { |
547 : | edgomez | 1.7 | |
548 : | Isibaar | 1.1 | uint32_t x, y; |
549 : | chenm001 | 1.26 | uint32_t bound; |
550 : | albeu | 1.32 | int cp_mb, st_mb; |
551 : | Isibaar | 1.1 | |
552 : | start_timer(); | ||
553 : | edgomez | 1.19 | image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
554 : | h | 1.41 | dec->width, dec->height); |
555 : | Isibaar | 1.1 | stop_edges_timer(); |
556 : | |||
557 : | chenm001 | 1.26 | bound = 0; |
558 : | |||
559 : | edgomez | 1.19 | for (y = 0; y < dec->mb_height; y++) { |
560 : | albeu | 1.32 | cp_mb = st_mb = 0; |
561 : | edgomez | 1.19 | for (x = 0; x < dec->mb_width; x++) { |
562 : | chenm001 | 1.26 | MACROBLOCK *mb; |
563 : | |||
564 : | edgomez | 1.44 | /* skip stuffing */ |
565 : | chenm001 | 1.26 | while (BitstreamShowBits(bs, 10) == 1) |
566 : | BitstreamSkip(bs, 10); | ||
567 : | |||
568 : | if (check_resync_marker(bs, fcode - 1)) | ||
569 : | { | ||
570 : | bound = read_video_packet_header(bs, fcode - 1, &quant); | ||
571 : | x = bound % dec->mb_width; | ||
572 : | y = bound / dec->mb_width; | ||
573 : | } | ||
574 : | mb = &dec->mbs[y * dec->mb_width + x]; | ||
575 : | |||
576 : | DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); | ||
577 : | suxen_drol | 1.23 | |
578 : | edgomez | 1.44 | /*if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) not_coded */ |
579 : | if (!(BitstreamGetBit(bs))) /* not_coded */ | ||
580 : | Isibaar | 1.1 | { |
581 : | uint32_t mcbpc; | ||
582 : | uint32_t cbpc; | ||
583 : | uint32_t acpred_flag; | ||
584 : | uint32_t cbpy; | ||
585 : | uint32_t cbp; | ||
586 : | uint32_t intra; | ||
587 : | |||
588 : | albeu | 1.32 | cp_mb++; |
589 : | Isibaar | 1.1 | mcbpc = get_mcbpc_inter(bs); |
590 : | mb->mode = mcbpc & 7; | ||
591 : | cbpc = (mcbpc >> 4); | ||
592 : | chenm001 | 1.26 | |
593 : | DPRINTF(DPRINTF_MB, "mode %i", mb->mode); | ||
594 : | DPRINTF(DPRINTF_MB, "cbpc %i", cbpc); | ||
595 : | edgomez | 1.2 | acpred_flag = 0; |
596 : | Isibaar | 1.1 | |
597 : | intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); | ||
598 : | edgomez | 1.19 | |
599 : | if (intra) { | ||
600 : | Isibaar | 1.1 | acpred_flag = BitstreamGetBit(bs); |
601 : | } | ||
602 : | |||
603 : | chenm001 | 1.26 | cbpy = get_cbpy(bs, intra); |
604 : | DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); | ||
605 : | chenm001 | 1.25 | |
606 : | Isibaar | 1.1 | cbp = (cbpy << 2) | cbpc; |
607 : | |||
608 : | edgomez | 1.19 | if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
609 : | chenm001 | 1.26 | int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
610 : | DPRINTF(DPRINTF_MB, "dquant %i", dquant); | ||
611 : | quant += dquant; | ||
612 : | edgomez | 1.19 | if (quant > 31) { |
613 : | Isibaar | 1.1 | quant = 31; |
614 : | chenm001 | 1.26 | } else if (quant < 1) { |
615 : | Isibaar | 1.1 | quant = 1; |
616 : | } | ||
617 : | chenm001 | 1.26 | DPRINTF(DPRINTF_MB, "quant %i", quant); |
618 : | Isibaar | 1.1 | } |
619 : | mb->quant = quant; | ||
620 : | h | 1.5 | |
621 : | edgomez | 1.19 | if (dec->interlacing) { |
622 : | h | 1.37 | if (cbp || intra) { |
623 : | mb->field_dct = BitstreamGetBit(bs); | ||
624 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "decp: field_dct: %d", mb->field_dct); |
625 : | h | 1.37 | } |
626 : | h | 1.5 | |
627 : | edgomez | 1.19 | if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
628 : | h | 1.5 | mb->field_pred = BitstreamGetBit(bs); |
629 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); |
630 : | h | 1.5 | |
631 : | edgomez | 1.19 | if (mb->field_pred) { |
632 : | h | 1.5 | mb->field_for_top = BitstreamGetBit(bs); |
633 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "decp: field_for_top: %d", mb->field_for_top); |
634 : | h | 1.5 | mb->field_for_bot = BitstreamGetBit(bs); |
635 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); |
636 : | h | 1.5 | } |
637 : | } | ||
638 : | } | ||
639 : | |||
640 : | edgomez | 1.19 | if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
641 : | if (dec->interlacing && mb->field_pred) { | ||
642 : | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], | ||
643 : | chenm001 | 1.26 | fcode, bound); |
644 : | edgomez | 1.19 | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
645 : | chenm001 | 1.26 | fcode, bound); |
646 : | edgomez | 1.19 | } else { |
647 : | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], | ||
648 : | chenm001 | 1.26 | fcode, bound); |
649 : | edgomez | 1.19 | mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
650 : | mb->mvs[0].x; | ||
651 : | mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = | ||
652 : | mb->mvs[0].y; | ||
653 : | h | 1.5 | } |
654 : | chl | 1.35 | } else if (mb->mode == MODE_INTER4V ) { |
655 : | |||
656 : | chenm001 | 1.26 | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
657 : | get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); | ||
658 : | get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); | ||
659 : | get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); | ||
660 : | edgomez | 1.44 | } else /* MODE_INTRA, MODE_INTRA_Q */ |
661 : | Isibaar | 1.1 | { |
662 : | edgomez | 1.19 | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
663 : | 0; | ||
664 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = | ||
665 : | 0; | ||
666 : | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, | ||
667 : | chenm001 | 1.26 | intra_dc_threshold, bound); |
668 : | Isibaar | 1.1 | continue; |
669 : | } | ||
670 : | |||
671 : | edgomez | 1.19 | decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
672 : | rounding); | ||
673 : | edgomez | 1.44 | } else /* not coded */ |
674 : | Isibaar | 1.1 | { |
675 : | edgomez | 1.39 | DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); |
676 : | |||
677 : | chenm001 | 1.14 | mb->mode = MODE_NOT_CODED; |
678 : | Isibaar | 1.1 | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
679 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; | ||
680 : | edgomez | 1.19 | |
681 : | edgomez | 1.44 | /* copy macroblock directly from ref to cur */ |
682 : | Isibaar | 1.1 | |
683 : | start_timer(); | ||
684 : | |||
685 : | edgomez | 1.19 | transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
686 : | (16 * x), | ||
687 : | dec->refn[0].y + (16 * y) * dec->edged_width + | ||
688 : | (16 * x), dec->edged_width); | ||
689 : | |||
690 : | transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + | ||
691 : | (16 * x + 8), | ||
692 : | dec->refn[0].y + (16 * y) * dec->edged_width + | ||
693 : | (16 * x + 8), dec->edged_width); | ||
694 : | |||
695 : | transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + | ||
696 : | (16 * x), | ||
697 : | dec->refn[0].y + (16 * y + | ||
698 : | 8) * dec->edged_width + | ||
699 : | (16 * x), dec->edged_width); | ||
700 : | |||
701 : | transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + | ||
702 : | (16 * x + 8), | ||
703 : | dec->refn[0].y + (16 * y + | ||
704 : | 8) * dec->edged_width + | ||
705 : | (16 * x + 8), dec->edged_width); | ||
706 : | |||
707 : | transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + | ||
708 : | (8 * x), | ||
709 : | dec->refn[0].u + | ||
710 : | (8 * y) * dec->edged_width / 2 + (8 * x), | ||
711 : | dec->edged_width / 2); | ||
712 : | |||
713 : | transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + | ||
714 : | (8 * x), | ||
715 : | dec->refn[0].v + | ||
716 : | (8 * y) * dec->edged_width / 2 + (8 * x), | ||
717 : | dec->edged_width / 2); | ||
718 : | Isibaar | 1.1 | stop_transfer_timer(); |
719 : | albeu | 1.32 | if(dec->out_frm && cp_mb > 0) { |
720 : | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); | ||
721 : | cp_mb = 0; | ||
722 : | } | ||
723 : | st_mb = x+1; | ||
724 : | Isibaar | 1.1 | } |
725 : | } | ||
726 : | albeu | 1.32 | if(dec->out_frm && cp_mb > 0) |
727 : | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); | ||
728 : | Isibaar | 1.1 | } |
729 : | } | ||
730 : | |||
731 : | edgomez | 1.44 | /* swap two MACROBLOCK array */ |
732 : | edgomez | 1.19 | void |
733 : | mb_swap(MACROBLOCK ** mb1, | ||
734 : | MACROBLOCK ** mb2) | ||
735 : | chenm001 | 1.14 | { |
736 : | edgomez | 1.19 | MACROBLOCK *temp = *mb1; |
737 : | |||
738 : | *mb1 = *mb2; | ||
739 : | *mb2 = temp; | ||
740 : | chenm001 | 1.14 | } |
741 : | |||
742 : | edgomez | 1.19 | int |
743 : | decoder_decode(DECODER * dec, | ||
744 : | XVID_DEC_FRAME * frame) | ||
745 : | Isibaar | 1.1 | { |
746 : | edgomez | 1.7 | |
747 : | Isibaar | 1.1 | Bitstream bs; |
748 : | uint32_t rounding; | ||
749 : | uint32_t quant; | ||
750 : | chenm001 | 1.14 | uint32_t fcode_forward; |
751 : | uint32_t fcode_backward; | ||
752 : | Isibaar | 1.1 | uint32_t intra_dc_threshold; |
753 : | chenm001 | 1.11 | uint32_t vop_type; |
754 : | Isibaar | 1.1 | |
755 : | start_global_timer(); | ||
756 : | albeu | 1.32 | |
757 : | dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; | ||
758 : | edgomez | 1.19 | |
759 : | Isibaar | 1.1 | BitstreamInit(&bs, frame->bitstream, frame->length); |
760 : | |||
761 : | edgomez | 1.44 | /* add by chenm001 <chenm001@163.com> */ |
762 : | /* for support B-frame to reference last 2 frame */ | ||
763 : | Isibaar | 1.18 | dec->frames++; |
764 : | edgomez | 1.19 | vop_type = |
765 : | BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, | ||
766 : | &fcode_backward, &intra_dc_threshold); | ||
767 : | |||
768 : | edgomez | 1.44 | dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; /* init pred vector to 0 */ |
769 : | edgomez | 1.19 | |
770 : | switch (vop_type) { | ||
771 : | case P_VOP: | ||
772 : | decoder_pframe(dec, &bs, rounding, quant, fcode_forward, | ||
773 : | intra_dc_threshold); | ||
774 : | Isibaar | 1.1 | break; |
775 : | |||
776 : | edgomez | 1.19 | case I_VOP: |
777 : | Isibaar | 1.1 | decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
778 : | break; | ||
779 : | edgomez | 1.19 | case B_VOP: |
780 : | suxen_drol | 1.21 | image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
781 : | Isibaar | 1.1 | break; |
782 : | edgomez | 1.46 | case N_VOP: |
783 : | edgomez | 1.44 | /* when low_delay==0, N_VOP's should interpolate between the past and future frames */ |
784 : | suxen_drol | 1.21 | image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
785 : | Isibaar | 1.1 | break; |
786 : | |||
787 : | edgomez | 1.19 | default: |
788 : | Isibaar | 1.1 | return XVID_ERR_FAIL; |
789 : | } | ||
790 : | |||
791 : | frame->length = BitstreamPos(&bs) / 8; | ||
792 : | |||
793 : | chenm001 | 1.27 | image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
794 : | edgomez | 1.19 | frame->image, frame->stride, frame->colorspace); |
795 : | Isibaar | 1.18 | |
796 : | edgomez | 1.19 | if (vop_type == I_VOP || vop_type == P_VOP) { |
797 : | chenm001 | 1.14 | image_swap(&dec->refn[0], &dec->refn[1]); |
798 : | image_swap(&dec->cur, &dec->refn[0]); | ||
799 : | chenm001 | 1.31 | |
800 : | edgomez | 1.44 | /* swap MACROBLOCK */ |
801 : | /* the Divx will not set the low_delay flage some times */ | ||
802 : | /* so follow code will wrong to not swap at that time */ | ||
803 : | /* this will broken bitstream! so I'm change it, */ | ||
804 : | /* But that is not the best way! can anyone tell me how */ | ||
805 : | /* to do another way? */ | ||
806 : | /* 18-07-2002 MinChen<chenm001@163.com> */ | ||
807 : | /*if (!dec->low_delay && vop_type == P_VOP) */ | ||
808 : | chenm001 | 1.31 | if (vop_type == P_VOP) |
809 : | chenm001 | 1.15 | mb_swap(&dec->mbs, &dec->last_mbs); |
810 : | chenm001 | 1.14 | } |
811 : | |||
812 : | Isibaar | 1.1 | emms(); |
813 : | |||
814 : | stop_global_timer(); | ||
815 : | |||
816 : | return XVID_ERR_OK; | ||
817 : | } |
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