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Revision 1.49.2.18 - (view) (download)

1 : edgomez 1.48 /*****************************************************************************
2 : Isibaar 1.1 *
3 : edgomez 1.12 * XVID MPEG-4 VIDEO CODEC
4 : edgomez 1.48 * - Decoder Module -
5 : Isibaar 1.1 *
6 : edgomez 1.49.2.7 * Copyright(C) 2002 MinChen <chenm001@163.com>
7 :     * 2002-2003 Peter Ross <pross@xvid.org>
8 : edgomez 1.42 *
9 : edgomez 1.49.2.7 * This program is free software ; you can redistribute it and/or modify
10 : edgomez 1.47 * it under the terms of the GNU General Public License as published by
11 : edgomez 1.49.2.7 * the Free Software Foundation ; either version 2 of the License, or
12 : edgomez 1.12 * (at your option) any later version.
13 :     *
14 :     * This program is distributed in the hope that it will be useful,
15 : edgomez 1.49.2.7 * but WITHOUT ANY WARRANTY ; without even the implied warranty of
16 : edgomez 1.12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 :     * GNU General Public License for more details.
18 :     *
19 :     * You should have received a copy of the GNU General Public License
20 : edgomez 1.49.2.7 * along with this program ; if not, write to the Free Software
21 : edgomez 1.12 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 : Isibaar 1.1 *
23 : edgomez 1.49.2.18 * $Id$
24 : edgomez 1.43 *
25 : edgomez 1.48 ****************************************************************************/
26 : Isibaar 1.1
27 : edgomez 1.47 #include <stdio.h>
28 : Isibaar 1.1 #include <stdlib.h>
29 : edgomez 1.12 #include <string.h>
30 : Isibaar 1.1
31 : chenm001 1.27 #ifdef BFRAMES_DEC_DEBUG
32 :     #define BFRAMES_DEC
33 :     #endif
34 :    
35 : Isibaar 1.1 #include "xvid.h"
36 :     #include "portab.h"
37 : edgomez 1.47 #include "global.h"
38 : Isibaar 1.1
39 :     #include "decoder.h"
40 :     #include "bitstream/bitstream.h"
41 :     #include "bitstream/mbcoding.h"
42 :    
43 : edgomez 1.49.2.15 #include "quant/quant.h"
44 : Isibaar 1.1 #include "dct/idct.h"
45 :     #include "dct/fdct.h"
46 :     #include "utils/mem_transfer.h"
47 :     #include "image/interpolate8x8.h"
48 : edgomez 1.47 #include "image/reduced.h"
49 :     #include "image/font.h"
50 : Isibaar 1.1
51 :     #include "bitstream/mbcoding.h"
52 :     #include "prediction/mbprediction.h"
53 :     #include "utils/timer.h"
54 :     #include "utils/emms.h"
55 : edgomez 1.47 #include "motion/motion.h"
56 : chl 1.49.2.9 #include "motion/gmc.h"
57 : Isibaar 1.1
58 :     #include "image/image.h"
59 :     #include "image/colorspace.h"
60 : Isibaar 1.3 #include "utils/mem_align.h"
61 : Isibaar 1.1
62 : syskin 1.49.2.17 static int
63 : edgomez 1.47 decoder_resize(DECODER * dec)
64 : Isibaar 1.1 {
65 : edgomez 1.47 /* free existing */
66 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
67 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
68 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
69 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
70 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
71 :    
72 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
73 : Isibaar 1.1
74 : edgomez 1.49.2.13 if (dec->last_mbs)
75 : edgomez 1.47 xvid_free(dec->last_mbs);
76 :     if (dec->mbs)
77 :     xvid_free(dec->mbs);
78 : Isibaar 1.1
79 : edgomez 1.47 /* realloc */
80 : Isibaar 1.1 dec->mb_width = (dec->width + 15) / 16;
81 :     dec->mb_height = (dec->height + 15) / 16;
82 :    
83 :     dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE;
84 :     dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE;
85 : edgomez 1.19
86 :     if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) {
87 : Isibaar 1.3 xvid_free(dec);
88 : Isibaar 1.1 return XVID_ERR_MEMORY;
89 :     }
90 :    
91 : edgomez 1.19 if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) {
92 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
93 : Isibaar 1.3 xvid_free(dec);
94 : Isibaar 1.1 return XVID_ERR_MEMORY;
95 :     }
96 : edgomez 1.47
97 : edgomez 1.48 /* Support B-frame to reference last 2 frame */
98 : edgomez 1.19 if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) {
99 : chenm001 1.11 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
100 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
101 :     xvid_free(dec);
102 :     return XVID_ERR_MEMORY;
103 :     }
104 : edgomez 1.47 if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) {
105 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
106 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
107 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
108 :     xvid_free(dec);
109 :     return XVID_ERR_MEMORY;
110 :     }
111 :    
112 :     if (image_create(&dec->qtmp, dec->edged_width, dec->edged_height)) {
113 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
114 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
115 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
116 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
117 :     xvid_free(dec);
118 :     return XVID_ERR_MEMORY;
119 :     }
120 :    
121 :     if (image_create(&dec->gmc, dec->edged_width, dec->edged_height)) {
122 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
123 : chenm001 1.14 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
124 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
125 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
126 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
127 : chenm001 1.14 xvid_free(dec);
128 :     return XVID_ERR_MEMORY;
129 :     }
130 : Isibaar 1.1
131 : edgomez 1.19 dec->mbs =
132 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
133 :     CACHE_LINE);
134 :     if (dec->mbs == NULL) {
135 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
136 : chenm001 1.14 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
137 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
138 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
139 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
140 : chenm001 1.14 xvid_free(dec);
141 :     return XVID_ERR_MEMORY;
142 :     }
143 : Isibaar 1.20 memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
144 :    
145 : edgomez 1.48 /* For skip MB flag */
146 : edgomez 1.19 dec->last_mbs =
147 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
148 :     CACHE_LINE);
149 :     if (dec->last_mbs == NULL) {
150 : chenm001 1.14 xvid_free(dec->mbs);
151 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
152 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
153 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
154 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
155 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
156 : Isibaar 1.3 xvid_free(dec);
157 : Isibaar 1.1 return XVID_ERR_MEMORY;
158 :     }
159 : Isibaar 1.20
160 :     memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
161 : Isibaar 1.1
162 : suxen_drol 1.49.2.1 return 0;
163 : edgomez 1.47 }
164 :    
165 :    
166 :     int
167 : suxen_drol 1.49.2.1 decoder_create(xvid_dec_create_t * create)
168 : edgomez 1.47 {
169 :     DECODER *dec;
170 :    
171 : edgomez 1.49.2.10 if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */
172 : suxen_drol 1.49.2.1 return XVID_ERR_VERSION;
173 :    
174 : edgomez 1.47 dec = xvid_malloc(sizeof(DECODER), CACHE_LINE);
175 :     if (dec == NULL) {
176 :     return XVID_ERR_MEMORY;
177 :     }
178 :     memset(dec, 0, sizeof(DECODER));
179 :    
180 : suxen_drol 1.49.2.1 create->handle = dec;
181 : edgomez 1.47
182 : suxen_drol 1.49.2.1 dec->width = create->width;
183 :     dec->height = create->height;
184 : edgomez 1.47
185 :     image_null(&dec->cur);
186 :     image_null(&dec->refn[0]);
187 :     image_null(&dec->refn[1]);
188 :     image_null(&dec->tmp);
189 :     image_null(&dec->qtmp);
190 :    
191 : edgomez 1.48 /* image based GMC */
192 : edgomez 1.47 image_null(&dec->gmc);
193 :    
194 :    
195 :     dec->mbs = NULL;
196 :     dec->last_mbs = NULL;
197 :    
198 : Isibaar 1.1 init_timer();
199 :    
200 : edgomez 1.48 /* For B-frame support (used to save reference frame's time */
201 : edgomez 1.47 dec->frames = 0;
202 : chenm001 1.14 dec->time = dec->time_base = dec->last_time_base = 0;
203 : edgomez 1.47 dec->low_delay = 0;
204 :     dec->packed_mode = 0;
205 :    
206 :     dec->fixed_dimensions = (dec->width > 0 && dec->height > 0);
207 : edgomez 1.19
208 : edgomez 1.47 if (dec->fixed_dimensions)
209 :     return decoder_resize(dec);
210 :     else
211 : edgomez 1.49.2.13 return 0;
212 : Isibaar 1.1 }
213 :    
214 :    
215 : edgomez 1.19 int
216 :     decoder_destroy(DECODER * dec)
217 : Isibaar 1.1 {
218 : chenm001 1.14 xvid_free(dec->last_mbs);
219 : Isibaar 1.3 xvid_free(dec->mbs);
220 : edgomez 1.47
221 : edgomez 1.48 /* image based GMC */
222 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
223 : edgomez 1.47
224 : chenm001 1.11 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
225 : chenm001 1.14 image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
226 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
227 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
228 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
229 : Isibaar 1.3 xvid_free(dec);
230 : Isibaar 1.1
231 :     write_timer();
232 : suxen_drol 1.49.2.1 return 0;
233 : Isibaar 1.1 }
234 :    
235 : edgomez 1.19 static const int32_t dquant_table[4] = {
236 : Isibaar 1.1 -1, -2, 1, 2
237 :     };
238 :    
239 : edgomez 1.48 /* decode an intra macroblock */
240 : syskin 1.49.2.17 static void
241 : edgomez 1.19 decoder_mbintra(DECODER * dec,
242 :     MACROBLOCK * pMB,
243 :     const uint32_t x_pos,
244 :     const uint32_t y_pos,
245 :     const uint32_t acpred_flag,
246 :     const uint32_t cbp,
247 :     Bitstream * bs,
248 :     const uint32_t quant,
249 : chenm001 1.26 const uint32_t intra_dc_threshold,
250 : edgomez 1.47 const unsigned int bound,
251 :     const int reduced_resolution)
252 : Isibaar 1.1 {
253 : edgomez 1.7
254 :     DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE);
255 : edgomez 1.19 DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
256 : edgomez 1.7
257 : h 1.8 uint32_t stride = dec->edged_width;
258 :     uint32_t stride2 = stride / 2;
259 :     uint32_t next_block = stride * 8;
260 : h 1.5 uint32_t i;
261 :     uint32_t iQuant = pMB->quant;
262 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
263 :    
264 : edgomez 1.47 if (reduced_resolution) {
265 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
266 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
267 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
268 :     }else{
269 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
270 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
271 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
272 :     }
273 : edgomez 1.7
274 : edgomez 1.48 memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */
275 : h 1.5
276 : edgomez 1.19 for (i = 0; i < 6; i++) {
277 : h 1.5 uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4);
278 : Isibaar 1.1 int16_t predictors[8];
279 :     int start_coeff;
280 :    
281 :     start_timer();
282 : edgomez 1.19 predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64],
283 : chenm001 1.26 iQuant, iDcScaler, predictors, bound);
284 : edgomez 1.19 if (!acpred_flag) {
285 : h 1.5 pMB->acpred_directions[i] = 0;
286 : Isibaar 1.1 }
287 :     stop_prediction_timer();
288 :    
289 : edgomez 1.19 if (quant < intra_dc_threshold) {
290 : Isibaar 1.1 int dc_size;
291 :     int dc_dif;
292 :    
293 : edgomez 1.19 dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs);
294 :     dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0;
295 : Isibaar 1.1
296 : edgomez 1.19 if (dc_size > 8) {
297 : edgomez 1.48 BitstreamSkip(bs, 1); /* marker */
298 : Isibaar 1.1 }
299 : edgomez 1.19
300 :     block[i * 64 + 0] = dc_dif;
301 : Isibaar 1.1 start_coeff = 1;
302 : chenm001 1.26
303 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif);
304 : edgomez 1.19 } else {
305 : Isibaar 1.1 start_coeff = 0;
306 :     }
307 :    
308 :     start_timer();
309 : edgomez 1.48 if (cbp & (1 << (5 - i))) /* coded */
310 : Isibaar 1.1 {
311 : edgomez 1.47 int direction = dec->alternate_vertical_scan ?
312 :     2 : pMB->acpred_directions[i];
313 :    
314 :     get_intra_block(bs, &block[i * 64], direction, start_coeff);
315 : Isibaar 1.1 }
316 :     stop_coding_timer();
317 :    
318 :     start_timer();
319 : edgomez 1.19 add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors);
320 : Isibaar 1.1 stop_prediction_timer();
321 :    
322 :     start_timer();
323 : edgomez 1.19 if (dec->quant_type == 0) {
324 : edgomez 1.49.2.15 dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler);
325 : edgomez 1.19 } else {
326 : edgomez 1.49.2.15 dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler);
327 : Isibaar 1.1 }
328 :     stop_iquant_timer();
329 :    
330 :     start_timer();
331 : edgomez 1.19 idct(&data[i * 64]);
332 : Isibaar 1.1 stop_idct_timer();
333 : edgomez 1.47
334 : h 1.5 }
335 : Isibaar 1.1
336 : edgomez 1.19 if (dec->interlacing && pMB->field_dct) {
337 : h 1.8 next_block = stride;
338 :     stride *= 2;
339 : Isibaar 1.1 }
340 : h 1.5
341 :     start_timer();
342 : edgomez 1.47
343 :     if (reduced_resolution)
344 :     {
345 :     next_block*=2;
346 :     copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
347 :     copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
348 :     copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
349 :     copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
350 :     copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
351 :     copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
352 :     }else{
353 :     transfer_16to8copy(pY_Cur, &data[0 * 64], stride);
354 :     transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride);
355 :     transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride);
356 :     transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride);
357 :     transfer_16to8copy(pU_Cur, &data[4 * 64], stride2);
358 :     transfer_16to8copy(pV_Cur, &data[5 * 64], stride2);
359 :     }
360 : h 1.5 stop_transfer_timer();
361 : Isibaar 1.1 }
362 :    
363 : syskin 1.49.2.17 static void
364 :     decoder_mb_decode(DECODER * dec,
365 :     const uint32_t cbp,
366 :     Bitstream * bs,
367 :     uint8_t * pY_Cur,
368 :     uint8_t * pU_Cur,
369 :     uint8_t * pV_Cur,
370 :     const int reduced_resolution,
371 :     const MACROBLOCK * pMB)
372 :     {
373 :     DECLARE_ALIGNED_MATRIX(block, 1, 64, int16_t, CACHE_LINE);
374 :     DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
375 : Isibaar 1.1
376 : edgomez 1.49.2.18 int stride = dec->edged_width;
377 :     int next_block = stride * (reduced_resolution ? 16 : 8);
378 : syskin 1.49.2.17 const int stride2 = stride/2;
379 :     int i;
380 :     const uint32_t iQuant = pMB->quant;
381 :     const int direction = dec->alternate_vertical_scan ? 2 : 0;
382 :     const quant_interFuncPtr dequant = dec->quant_type == 0 ? dequant_h263_inter : dequant_mpeg_inter;
383 : Isibaar 1.1
384 : syskin 1.49.2.17 for (i = 0; i < 6; i++) {
385 :    
386 :     if (cbp & (1 << (5 - i))) { /* coded */
387 :    
388 :     memset(block, 0, 64 * sizeof(int16_t)); /* clear */
389 :    
390 :     start_timer();
391 :     get_inter_block(bs, block, direction);
392 :     stop_coding_timer();
393 :    
394 :     start_timer();
395 :     dequant(&data[i * 64], block, iQuant);
396 :     stop_iquant_timer();
397 :    
398 :     start_timer();
399 :     idct(&data[i * 64]);
400 :     stop_idct_timer();
401 :     }
402 :     }
403 :    
404 :     if (dec->interlacing && pMB->field_dct) {
405 :     next_block = stride;
406 :     stride *= 2;
407 :     }
408 :    
409 :     start_timer();
410 :     if (reduced_resolution) {
411 :     if (cbp & 32)
412 :     add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
413 :     if (cbp & 16)
414 :     add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
415 :     if (cbp & 8)
416 :     add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
417 :     if (cbp & 4)
418 :     add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
419 :     if (cbp & 2)
420 :     add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
421 :     if (cbp & 1)
422 :     add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
423 :     } else {
424 :     if (cbp & 32)
425 :     transfer_16to8add(pY_Cur, &data[0 * 64], stride);
426 :     if (cbp & 16)
427 :     transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride);
428 :     if (cbp & 8)
429 :     transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride);
430 :     if (cbp & 4)
431 :     transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride);
432 :     if (cbp & 2)
433 :     transfer_16to8add(pU_Cur, &data[4 * 64], stride2);
434 :     if (cbp & 1)
435 :     transfer_16to8add(pV_Cur, &data[5 * 64], stride2);
436 :     }
437 :     stop_transfer_timer();
438 :     }
439 : Isibaar 1.1
440 : edgomez 1.48 /* decode an inter macroblock */
441 : syskin 1.49.2.17 static void
442 : edgomez 1.19 decoder_mbinter(DECODER * dec,
443 :     const MACROBLOCK * pMB,
444 :     const uint32_t x_pos,
445 :     const uint32_t y_pos,
446 :     const uint32_t cbp,
447 :     Bitstream * bs,
448 : edgomez 1.47 const uint32_t rounding,
449 : syskin 1.49.2.17 const int reduced_resolution,
450 :     const int ref)
451 : Isibaar 1.1 {
452 : h 1.8 uint32_t stride = dec->edged_width;
453 :     uint32_t stride2 = stride / 2;
454 : edgomez 1.7 uint32_t i;
455 : syskin 1.49.2.17
456 : h 1.5 uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
457 : edgomez 1.47
458 : Isibaar 1.1 int uv_dx, uv_dy;
459 : edgomez 1.47 VECTOR mv[4]; /* local copy of mvs */
460 :    
461 :     if (reduced_resolution) {
462 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
463 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
464 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
465 :     for (i = 0; i < 4; i++) {
466 :     mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x);
467 :     mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y);
468 :     }
469 :     } else {
470 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
471 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
472 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
473 :     for (i = 0; i < 4; i++)
474 :     mv[i] = pMB->mvs[i];
475 :     }
476 : edgomez 1.49.2.13
477 : syskin 1.49.2.17 start_timer();
478 : edgomez 1.47
479 : syskin 1.49.2.17 if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */
480 : edgomez 1.49.2.13
481 : syskin 1.49.2.17 uv_dx = mv[0].x;
482 :     uv_dy = mv[0].y;
483 :     if (dec->quarterpel) {
484 :     uv_dx /= 2;
485 :     uv_dy /= 2;
486 :     }
487 : edgomez 1.47 uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
488 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
489 :    
490 :     if (reduced_resolution)
491 :     interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
492 : syskin 1.49.2.17 mv[0].x, mv[0].y, stride, rounding);
493 :     else if (dec->quarterpel)
494 :     interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64,
495 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
496 : edgomez 1.47 mv[0].x, mv[0].y, stride, rounding);
497 :     else
498 : syskin 1.49.2.17 interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos,
499 :     mv[0].x, mv[0].y, stride, rounding);
500 : edgomez 1.47
501 : syskin 1.49.2.17 } else { /* MODE_INTER4V */
502 : edgomez 1.47
503 : syskin 1.49.2.17 if(dec->quarterpel) {
504 :     uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2);
505 :     uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2);
506 :     } else {
507 :     uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x;
508 :     uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y;
509 :     }
510 : edgomez 1.47
511 : syskin 1.49.2.17 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
512 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
513 : edgomez 1.47
514 : syskin 1.49.2.17 if (reduced_resolution) {
515 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
516 : syskin 1.49.2.17 mv[0].x, mv[0].y, stride, rounding);
517 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos,
518 : syskin 1.49.2.17 mv[1].x, mv[1].y, stride, rounding);
519 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos, 32*y_pos + 16,
520 : syskin 1.49.2.17 mv[2].x, mv[2].y, stride, rounding);
521 : edgomez 1.49.2.13 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos + 16,
522 : syskin 1.49.2.17 mv[3].x, mv[3].y, stride, rounding);
523 : edgomez 1.47 interpolate16x16_switch(dec->cur.u, dec->refn[0].u , 16 * x_pos, 16 * y_pos,
524 : syskin 1.49.2.17 uv_dx, uv_dy, stride2, rounding);
525 : edgomez 1.47 interpolate16x16_switch(dec->cur.v, dec->refn[0].v , 16 * x_pos, 16 * y_pos,
526 : syskin 1.49.2.17 uv_dx, uv_dy, stride2, rounding);
527 : edgomez 1.47
528 : syskin 1.49.2.17 } else if (dec->quarterpel) {
529 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
530 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
531 :     mv[0].x, mv[0].y, stride, rounding);
532 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
533 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
534 :     mv[1].x, mv[1].y, stride, rounding);
535 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
536 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
537 :     mv[2].x, mv[2].y, stride, rounding);
538 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
539 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
540 :     mv[3].x, mv[3].y, stride, rounding);
541 :     } else {
542 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos,
543 :     mv[0].x, mv[0].y, stride, rounding);
544 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos,
545 :     mv[1].x, mv[1].y, stride, rounding);
546 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8,
547 :     mv[2].x, mv[2].y, stride, rounding);
548 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8,
549 :     mv[3].x, mv[3].y, stride, rounding);
550 : edgomez 1.47 }
551 :     }
552 :    
553 : syskin 1.49.2.17 /* chroma */
554 :     if (reduced_resolution) {
555 :     interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos,
556 :     uv_dx, uv_dy, stride2, rounding);
557 :     interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos,
558 :     uv_dx, uv_dy, stride2, rounding);
559 :     } else {
560 :     interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos,
561 :     uv_dx, uv_dy, stride2, rounding);
562 :     interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos,
563 :     uv_dx, uv_dy, stride2, rounding);
564 : edgomez 1.47 }
565 : Isibaar 1.1
566 : syskin 1.49.2.17 stop_comp_timer();
567 : Isibaar 1.34
568 : syskin 1.49.2.17 if (cbp)
569 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur,
570 :     reduced_resolution, pMB);
571 : edgomez 1.47 }
572 :    
573 :     static void
574 :     decoder_mbgmc(DECODER * dec,
575 :     MACROBLOCK * const pMB,
576 :     const uint32_t x_pos,
577 :     const uint32_t y_pos,
578 :     const uint32_t fcode,
579 :     const uint32_t cbp,
580 :     Bitstream * bs,
581 : syskin 1.49.2.17 const uint32_t rounding)
582 : edgomez 1.47 {
583 :     const uint32_t stride = dec->edged_width;
584 :     const uint32_t stride2 = stride / 2;
585 : syskin 1.49.2.17
586 : edgomez 1.47 uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
587 :     uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
588 :     uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
589 :    
590 : syskin 1.49.2.17 NEW_GMC_DATA * gmc_data = &dec->new_gmc_data;
591 :    
592 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
593 : Isibaar 1.1
594 :     start_timer();
595 : edgomez 1.49.2.13
596 : edgomez 1.47 /* this is where the calculations are done */
597 : edgomez 1.49.2.13
598 : syskin 1.49.2.17 gmc_data->predict_16x16(gmc_data,
599 :     dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y,
600 :     stride, stride, x_pos, y_pos, rounding);
601 :    
602 :     gmc_data->predict_8x8(gmc_data,
603 :     dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u,
604 :     dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v,
605 :     stride2, stride2, x_pos, y_pos, rounding);
606 : chl 1.49.2.9
607 : syskin 1.49.2.17 gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel);
608 : chl 1.49.2.9
609 : syskin 1.49.2.17 pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode);
610 :     pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode);
611 : chl 1.49.2.9
612 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
613 : edgomez 1.49.2.13
614 : edgomez 1.47 stop_transfer_timer();
615 : edgomez 1.49.2.13
616 : syskin 1.49.2.17 if (cbp)
617 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
618 : Isibaar 1.1
619 :     }
620 :    
621 :    
622 : syskin 1.49.2.17 static void
623 : edgomez 1.19 decoder_iframe(DECODER * dec,
624 : syskin 1.49.2.17 Bitstream * bs,
625 :     int reduced_resolution,
626 :     int quant,
627 :     int intra_dc_threshold)
628 : Isibaar 1.1 {
629 : chenm001 1.26 uint32_t bound;
630 :     uint32_t x, y;
631 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
632 :     uint32_t mb_height = dec->mb_height;
633 : edgomez 1.49.2.13
634 : syskin 1.49.2.17 if (reduced_resolution) {
635 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
636 :     mb_height = (dec->height + 31) / 32;
637 :     }
638 : chenm001 1.25
639 : chenm001 1.26 bound = 0;
640 : edgomez 1.7
641 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
642 :     for (x = 0; x < mb_width; x++) {
643 : chenm001 1.26 MACROBLOCK *mb;
644 : Isibaar 1.1 uint32_t mcbpc;
645 :     uint32_t cbpc;
646 :     uint32_t acpred_flag;
647 :     uint32_t cbpy;
648 :     uint32_t cbp;
649 :    
650 : chenm001 1.26 while (BitstreamShowBits(bs, 9) == 1)
651 :     BitstreamSkip(bs, 9);
652 :    
653 :     if (check_resync_marker(bs, 0))
654 :     {
655 : edgomez 1.49.2.13 bound = read_video_packet_header(bs, dec, 0,
656 : edgomez 1.47 &quant, NULL, NULL, &intra_dc_threshold);
657 :     x = bound % mb_width;
658 :     y = bound / mb_width;
659 : chenm001 1.26 }
660 :     mb = &dec->mbs[y * dec->mb_width + x];
661 :    
662 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
663 : chenm001 1.26
664 : Isibaar 1.1 mcbpc = get_mcbpc_intra(bs);
665 :     mb->mode = mcbpc & 7;
666 :     cbpc = (mcbpc >> 4);
667 :    
668 :     acpred_flag = BitstreamGetBit(bs);
669 :    
670 :     cbpy = get_cbpy(bs, 1);
671 :     cbp = (cbpy << 2) | cbpc;
672 :    
673 : edgomez 1.19 if (mb->mode == MODE_INTRA_Q) {
674 :     quant += dquant_table[BitstreamGetBits(bs, 2)];
675 :     if (quant > 31) {
676 : Isibaar 1.1 quant = 31;
677 : edgomez 1.19 } else if (quant < 1) {
678 : Isibaar 1.1 quant = 1;
679 :     }
680 :     }
681 :     mb->quant = quant;
682 : chenm001 1.30 mb->mvs[0].x = mb->mvs[0].y =
683 :     mb->mvs[1].x = mb->mvs[1].y =
684 :     mb->mvs[2].x = mb->mvs[2].y =
685 :     mb->mvs[3].x = mb->mvs[3].y =0;
686 : h 1.5
687 : edgomez 1.19 if (dec->interlacing) {
688 : h 1.5 mb->field_dct = BitstreamGetBit(bs);
689 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct);
690 : h 1.5 }
691 : Isibaar 1.1
692 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
693 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
694 :    
695 : Isibaar 1.1 }
696 : albeu 1.32 if(dec->out_frm)
697 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width);
698 : Isibaar 1.1 }
699 : edgomez 1.7
700 : Isibaar 1.1 }
701 :    
702 :    
703 : syskin 1.49.2.17 static void
704 : edgomez 1.19 get_motion_vector(DECODER * dec,
705 : syskin 1.49.2.17 Bitstream * bs,
706 :     int x,
707 :     int y,
708 :     int k,
709 :     VECTOR * ret_mv,
710 :     int fcode,
711 :     const int bound)
712 : Isibaar 1.1 {
713 : edgomez 1.7
714 : syskin 1.49.2.17 const int scale_fac = 1 << (fcode - 1);
715 :     const int high = (32 * scale_fac) - 1;
716 :     const int low = ((-32) * scale_fac);
717 :     const int range = (64 * scale_fac);
718 : Isibaar 1.1
719 : syskin 1.49.2.17 const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k);
720 : edgomez 1.47 VECTOR mv;
721 : Isibaar 1.1
722 : edgomez 1.47 mv.x = get_mv(bs, fcode);
723 :     mv.y = get_mv(bs, fcode);
724 : edgomez 1.19
725 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MV,"mv_diff (%i,%i) pred (%i,%i) result (%i,%i)\n", mv.x, mv.y, pmv.x, pmv.y, mv.x+pmv.x, mv.y+pmv.y);
726 : chenm001 1.26
727 : edgomez 1.47 mv.x += pmv.x;
728 :     mv.y += pmv.y;
729 : Isibaar 1.1
730 : edgomez 1.47 if (mv.x < low) {
731 :     mv.x += range;
732 :     } else if (mv.x > high) {
733 :     mv.x -= range;
734 : Isibaar 1.1 }
735 :    
736 : edgomez 1.47 if (mv.y < low) {
737 :     mv.y += range;
738 :     } else if (mv.y > high) {
739 :     mv.y -= range;
740 : Isibaar 1.1 }
741 :    
742 : edgomez 1.47 ret_mv->x = mv.x;
743 :     ret_mv->y = mv.y;
744 :     }
745 :    
746 :     /* for P_VOP set gmc_warp to NULL */
747 : syskin 1.49.2.17 static void
748 : edgomez 1.19 decoder_pframe(DECODER * dec,
749 : syskin 1.49.2.17 Bitstream * bs,
750 :     int rounding,
751 :     int reduced_resolution,
752 :     int quant,
753 :     int fcode,
754 :     int intra_dc_threshold,
755 :     const WARPPOINTS *const gmc_warp)
756 : Isibaar 1.1 {
757 :     uint32_t x, y;
758 : chenm001 1.26 uint32_t bound;
759 : albeu 1.32 int cp_mb, st_mb;
760 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
761 :     uint32_t mb_height = dec->mb_height;
762 : edgomez 1.49.2.13
763 : syskin 1.49.2.17 if (reduced_resolution) {
764 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
765 :     mb_height = (dec->height + 31) / 32;
766 :     }
767 : Isibaar 1.1
768 :     start_timer();
769 : edgomez 1.19 image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
770 : syskin 1.49.2.17 dec->width, dec->height);
771 : Isibaar 1.1 stop_edges_timer();
772 :    
773 : syskin 1.49.2.17 if (gmc_warp) {
774 :     /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
775 : edgomez 1.49.2.13 generate_GMCparameters( dec->sprite_warping_points,
776 :     dec->sprite_warping_accuracy, gmc_warp,
777 : chl 1.49.2.9 dec->width, dec->height, &dec->new_gmc_data);
778 : edgomez 1.47
779 : syskin 1.49.2.17 /* image warping is done block-based in decoder_mbgmc(), now */
780 : edgomez 1.47 }
781 :    
782 : chenm001 1.26 bound = 0;
783 :    
784 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
785 : albeu 1.32 cp_mb = st_mb = 0;
786 : edgomez 1.47 for (x = 0; x < mb_width; x++) {
787 : chenm001 1.26 MACROBLOCK *mb;
788 :    
789 : edgomez 1.48 /* skip stuffing */
790 : chenm001 1.26 while (BitstreamShowBits(bs, 10) == 1)
791 :     BitstreamSkip(bs, 10);
792 :    
793 : syskin 1.49.2.17 if (check_resync_marker(bs, fcode - 1)) {
794 : edgomez 1.49.2.13 bound = read_video_packet_header(bs, dec, fcode - 1,
795 : edgomez 1.47 &quant, &fcode, NULL, &intra_dc_threshold);
796 :     x = bound % mb_width;
797 :     y = bound / mb_width;
798 : chenm001 1.26 }
799 :     mb = &dec->mbs[y * dec->mb_width + x];
800 :    
801 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
802 : suxen_drol 1.23
803 : syskin 1.49.2.17 if (!(BitstreamGetBit(bs))) { /* block _is_ coded */
804 :     uint32_t mcbpc, cbpc, cbpy, cbp;
805 :     uint32_t intra, acpred_flag = 0;
806 : edgomez 1.48 int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */
807 : Isibaar 1.1
808 : albeu 1.32 cp_mb++;
809 : Isibaar 1.1 mcbpc = get_mcbpc_inter(bs);
810 :     mb->mode = mcbpc & 7;
811 :     cbpc = (mcbpc >> 4);
812 : edgomez 1.49.2.13
813 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode);
814 :     DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc);
815 : Isibaar 1.1
816 :     intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q);
817 : edgomez 1.19
818 : edgomez 1.47 if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q))
819 :     mcsel = BitstreamGetBit(bs);
820 : syskin 1.49.2.17 else if (intra)
821 : edgomez 1.49.2.12 acpred_flag = BitstreamGetBit(bs);
822 : edgomez 1.47
823 : chenm001 1.26 cbpy = get_cbpy(bs, intra);
824 : syskin 1.49.2.17 DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel);
825 : chenm001 1.25
826 : Isibaar 1.1 cbp = (cbpy << 2) | cbpc;
827 :    
828 : edgomez 1.19 if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) {
829 : chenm001 1.26 int dquant = dquant_table[BitstreamGetBits(bs, 2)];
830 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant);
831 : chenm001 1.26 quant += dquant;
832 : edgomez 1.19 if (quant > 31) {
833 : Isibaar 1.1 quant = 31;
834 : chenm001 1.26 } else if (quant < 1) {
835 : Isibaar 1.1 quant = 1;
836 :     }
837 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant);
838 : Isibaar 1.1 }
839 :     mb->quant = quant;
840 : h 1.5
841 : edgomez 1.19 if (dec->interlacing) {
842 : syskin 1.49.2.14 if ((cbp || intra) && !mcsel) {
843 : h 1.37 mb->field_dct = BitstreamGetBit(bs);
844 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
845 : h 1.37 }
846 : h 1.5
847 : edgomez 1.19 if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
848 : h 1.5 mb->field_pred = BitstreamGetBit(bs);
849 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
850 : h 1.5
851 : edgomez 1.19 if (mb->field_pred) {
852 : h 1.5 mb->field_for_top = BitstreamGetBit(bs);
853 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
854 : h 1.5 mb->field_for_bot = BitstreamGetBit(bs);
855 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
856 : h 1.5 }
857 :     }
858 :     }
859 : edgomez 1.49.2.13
860 : edgomez 1.47 if (mcsel) {
861 : syskin 1.49.2.17 decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding);
862 : edgomez 1.47 continue;
863 :    
864 :     } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
865 : h 1.5
866 : edgomez 1.19 if (dec->interlacing && mb->field_pred) {
867 : syskin 1.49.2.17 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
868 :     get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound);
869 : edgomez 1.19 } else {
870 : syskin 1.49.2.17 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
871 : edgomez 1.47 mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
872 : h 1.5 }
873 : chl 1.35 } else if (mb->mode == MODE_INTER4V ) {
874 : chenm001 1.26 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
875 :     get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound);
876 :     get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound);
877 :     get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound);
878 : syskin 1.49.2.17 } else { /* MODE_INTRA, MODE_INTRA_Q */
879 :     mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
880 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
881 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
882 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
883 : Isibaar 1.1 continue;
884 :     }
885 :    
886 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, cbp, bs,
887 :     rounding, reduced_resolution, 0);
888 : edgomez 1.47
889 : syskin 1.49.2.17 } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */
890 : edgomez 1.47 mb->mode = MODE_NOT_CODED_GMC;
891 : syskin 1.49.2.17 decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding);
892 : edgomez 1.39
893 : edgomez 1.47 if(dec->out_frm && cp_mb > 0) {
894 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
895 :     cp_mb = 0;
896 : edgomez 1.47 }
897 :     st_mb = x+1;
898 : syskin 1.49.2.17 } else { /* not coded P_VOP macroblock */
899 : chenm001 1.14 mb->mode = MODE_NOT_CODED;
900 : edgomez 1.47
901 : Isibaar 1.1 mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
902 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
903 : edgomez 1.49.2.13
904 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, 0, bs,
905 :     rounding, reduced_resolution, 0);
906 : edgomez 1.47
907 : albeu 1.32 if(dec->out_frm && cp_mb > 0) {
908 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
909 :     cp_mb = 0;
910 : albeu 1.32 }
911 :     st_mb = x+1;
912 : Isibaar 1.1 }
913 :     }
914 : syskin 1.49.2.17
915 : albeu 1.32 if(dec->out_frm && cp_mb > 0)
916 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
917 : Isibaar 1.1 }
918 :     }
919 :    
920 : edgomez 1.47
921 : edgomez 1.48 /* decode B-frame motion vector */
922 : syskin 1.49.2.17 static void
923 :     get_b_motion_vector(Bitstream * bs,
924 : edgomez 1.47 VECTOR * mv,
925 :     int fcode,
926 :     const VECTOR pmv)
927 : chenm001 1.14 {
928 : syskin 1.49.2.17 const int scale_fac = 1 << (fcode - 1);
929 :     const int high = (32 * scale_fac) - 1;
930 :     const int low = ((-32) * scale_fac);
931 :     const int range = (64 * scale_fac);
932 : edgomez 1.7
933 : syskin 1.49.2.17 int mv_x = get_mv(bs, fcode);
934 :     int mv_y = get_mv(bs, fcode);
935 : Isibaar 1.1
936 : syskin 1.49.2.17 mv_x += pmv.x;
937 :     mv_y += pmv.y;
938 : albeu 1.32
939 : syskin 1.49.2.17 if (mv_x < low)
940 : edgomez 1.47 mv_x += range;
941 : syskin 1.49.2.17 else if (mv_x > high)
942 : edgomez 1.47 mv_x -= range;
943 :    
944 : syskin 1.49.2.17 if (mv_y < low)
945 : edgomez 1.47 mv_y += range;
946 : syskin 1.49.2.17 else if (mv_y > high)
947 : edgomez 1.47 mv_y -= range;
948 :    
949 :     mv->x = mv_x;
950 :     mv->y = mv_y;
951 :     }
952 :    
953 : syskin 1.49.2.16 /* decode an B-frame direct & interpolate macroblock */
954 : syskin 1.49.2.17 static void
955 : edgomez 1.47 decoder_bf_interpolate_mbinter(DECODER * dec,
956 : syskin 1.49.2.17 IMAGE forward,
957 :     IMAGE backward,
958 :     const MACROBLOCK * pMB,
959 :     const uint32_t x_pos,
960 :     const uint32_t y_pos,
961 :     Bitstream * bs,
962 :     const int direct)
963 : edgomez 1.47 {
964 :     uint32_t stride = dec->edged_width;
965 :     uint32_t stride2 = stride / 2;
966 :     int uv_dx, uv_dy;
967 :     int b_uv_dx, b_uv_dy;
968 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
969 : syskin 1.49.2.17 const uint32_t cbp = pMB->cbp;
970 : edgomez 1.47
971 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
972 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
973 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
974 :    
975 : syskin 1.49.2.16 if (!direct) {
976 : edgomez 1.47 uv_dx = pMB->mvs[0].x;
977 :     uv_dy = pMB->mvs[0].y;
978 :    
979 :     b_uv_dx = pMB->b_mvs[0].x;
980 :     b_uv_dy = pMB->b_mvs[0].y;
981 :    
982 : syskin 1.49.2.17 if (dec->quarterpel) {
983 : edgomez 1.47 uv_dx /= 2;
984 :     uv_dy /= 2;
985 :     b_uv_dx /= 2;
986 :     b_uv_dy /= 2;
987 :     }
988 :    
989 :     uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
990 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
991 :    
992 :     b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3];
993 :     b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3];
994 :    
995 : syskin 1.49.2.17 } else {
996 :     if(dec->quarterpel) {
997 :     uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2);
998 :     uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2);
999 :     b_uv_dx = (pMB->b_mvs[0].x / 2) + (pMB->b_mvs[1].x / 2) + (pMB->b_mvs[2].x / 2) + (pMB->b_mvs[3].x / 2);
1000 :     b_uv_dy = (pMB->b_mvs[0].y / 2) + (pMB->b_mvs[1].y / 2) + (pMB->b_mvs[2].y / 2) + (pMB->b_mvs[3].y / 2);
1001 :     } else {
1002 :     uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x;
1003 :     uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y;
1004 :     b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x;
1005 :     b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y;
1006 :     }
1007 : edgomez 1.47
1008 : syskin 1.49.2.17 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
1009 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
1010 :     b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf];
1011 :     b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf];
1012 : edgomez 1.47 }
1013 :    
1014 :     start_timer();
1015 :     if(dec->quarterpel) {
1016 : syskin 1.49.2.17 if(!direct) {
1017 : edgomez 1.47 interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1018 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1019 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1020 :     } else {
1021 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1022 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1023 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1024 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1025 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1026 :     pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1027 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1028 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1029 :     pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1030 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1031 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1032 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1033 : edgomez 1.47 }
1034 : syskin 1.49.2.17 } else {
1035 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos,
1036 : syskin 1.49.2.17 pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1037 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos,
1038 : syskin 1.49.2.17 pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1039 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8,
1040 : syskin 1.49.2.17 pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1041 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8,
1042 : syskin 1.49.2.17 16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1043 : edgomez 1.47 }
1044 :    
1045 :     interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx,
1046 : syskin 1.49.2.17 uv_dy, stride2, 0);
1047 : edgomez 1.47 interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx,
1048 : syskin 1.49.2.17 uv_dy, stride2, 0);
1049 : edgomez 1.47
1050 :    
1051 :     if(dec->quarterpel) {
1052 : syskin 1.49.2.17 if(!direct) {
1053 : edgomez 1.47 interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1054 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1055 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1056 :     } else {
1057 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1058 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1059 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1060 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1061 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1062 :     pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1063 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1064 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1065 :     pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1066 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1067 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1068 :     pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1069 : edgomez 1.47 }
1070 : syskin 1.49.2.17 } else {
1071 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos,
1072 : syskin 1.49.2.17 pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1073 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1074 : syskin 1.49.2.17 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1075 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos,
1076 : syskin 1.49.2.17 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1077 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1078 : syskin 1.49.2.17 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1079 : edgomez 1.47 }
1080 :    
1081 :     interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos,
1082 : syskin 1.49.2.17 b_uv_dx, b_uv_dy, stride2, 0);
1083 : edgomez 1.47 interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos,
1084 : syskin 1.49.2.17 b_uv_dx, b_uv_dy, stride2, 0);
1085 : edgomez 1.47
1086 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1087 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1088 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos,
1089 :     stride, 1, 8);
1090 :    
1091 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1092 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1093 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1094 :     stride, 1, 8);
1095 :    
1096 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1097 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1098 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1099 :     stride, 1, 8);
1100 :    
1101 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1102 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1103 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1104 :     stride, 1, 8);
1105 :    
1106 :     interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1107 :     dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1108 :     dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos,
1109 :     stride2, 1, 8);
1110 :    
1111 :     interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1112 :     dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1113 :     dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos,
1114 :     stride2, 1, 8);
1115 :    
1116 :     stop_comp_timer();
1117 :    
1118 : syskin 1.49.2.17 if (cbp)
1119 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
1120 : edgomez 1.47 }
1121 :    
1122 : edgomez 1.48 /* for decode B-frame dbquant */
1123 : syskin 1.49.2.17 static __inline int32_t
1124 : edgomez 1.47 get_dbquant(Bitstream * bs)
1125 :     {
1126 : syskin 1.49.2.17 if (!BitstreamGetBit(bs)) /* '0' */
1127 : edgomez 1.47 return (0);
1128 : syskin 1.49.2.17 else if (!BitstreamGetBit(bs)) /* '10' */
1129 : edgomez 1.47 return (-2);
1130 : syskin 1.49.2.17 else /* '11' */
1131 : edgomez 1.48 return (2);
1132 : edgomez 1.47 }
1133 :    
1134 : edgomez 1.48 /*
1135 : syskin 1.49.2.17 * decode B-frame mb_type
1136 :     * bit ret_value
1137 :     * 1 0
1138 :     * 01 1
1139 :     * 001 2
1140 :     * 0001 3
1141 : edgomez 1.48 */
1142 : syskin 1.49.2.17 static int32_t __inline
1143 : edgomez 1.47 get_mbtype(Bitstream * bs)
1144 :     {
1145 :     int32_t mb_type;
1146 :    
1147 : syskin 1.49.2.17 for (mb_type = 0; mb_type <= 3; mb_type++)
1148 : edgomez 1.47 if (BitstreamGetBit(bs))
1149 : syskin 1.49.2.17 return (mb_type);
1150 : edgomez 1.47
1151 : syskin 1.49.2.17 return -1;
1152 : edgomez 1.47 }
1153 :    
1154 : syskin 1.49.2.17 static void
1155 : edgomez 1.47 decoder_bframe(DECODER * dec,
1156 : syskin 1.49.2.17 Bitstream * bs,
1157 :     int quant,
1158 :     int fcode_forward,
1159 :     int fcode_backward)
1160 : edgomez 1.47 {
1161 :     uint32_t x, y;
1162 :     VECTOR mv;
1163 :     const VECTOR zeromv = {0,0};
1164 : syskin 1.49.2.17 const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp;
1165 :     int i;
1166 :    
1167 : edgomez 1.47 #ifdef BFRAMES_DEC_DEBUG
1168 :     FILE *fp;
1169 :     static char first=0;
1170 : syskin 1.49.2.17 #define BFRAME_DEBUG
1171 :     if (!first && fp) { \
1172 : syskin 1.49.2.16 fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mode,mb->cbp); \
1173 : edgomez 1.47 }
1174 :     #endif
1175 :    
1176 :     start_timer();
1177 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
1178 : syskin 1.49.2.17 dec->width, dec->height);
1179 : edgomez 1.47 image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height,
1180 : syskin 1.49.2.17 dec->width, dec->height);
1181 : edgomez 1.47 stop_edges_timer();
1182 :    
1183 :     #ifdef BFRAMES_DEC_DEBUG
1184 :     if (!first){
1185 :     fp=fopen("C:\\XVIDDBG.TXT","w");
1186 :     }
1187 :     #endif
1188 :    
1189 :     for (y = 0; y < dec->mb_height; y++) {
1190 : edgomez 1.48 /* Initialize Pred Motion Vector */
1191 : edgomez 1.47 dec->p_fmv = dec->p_bmv = zeromv;
1192 :     for (x = 0; x < dec->mb_width; x++) {
1193 :     MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x];
1194 :     MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x];
1195 :    
1196 :     mv =
1197 :     mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] =
1198 :     mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv;
1199 : syskin 1.49.2.17 mb->quant = quant;
1200 : edgomez 1.47
1201 : edgomez 1.48 /*
1202 : edgomez 1.49.2.13 * skip if the co-located P_VOP macroblock is not coded
1203 : edgomez 1.48 * if not codec in co-located S_VOP macroblock is _not_
1204 :     * automatically skipped
1205 :     */
1206 : edgomez 1.47
1207 :     if (last_mb->mode == MODE_NOT_CODED) {
1208 :     mb->cbp = 0;
1209 : syskin 1.49.2.16 mb->mode = MODE_FORWARD;
1210 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1211 : edgomez 1.47 continue;
1212 :     }
1213 :    
1214 : edgomez 1.48 if (!BitstreamGetBit(bs)) { /* modb=='0' */
1215 : edgomez 1.47 const uint8_t modb2 = BitstreamGetBit(bs);
1216 :    
1217 : syskin 1.49.2.16 mb->mode = get_mbtype(bs);
1218 : edgomez 1.47
1219 : syskin 1.49.2.17 if (!modb2) /* modb=='00' */
1220 : edgomez 1.47 mb->cbp = BitstreamGetBits(bs, 6);
1221 : syskin 1.49.2.17 else
1222 : edgomez 1.47 mb->cbp = 0;
1223 : syskin 1.49.2.17
1224 : syskin 1.49.2.16 if (mb->mode && mb->cbp) {
1225 : edgomez 1.47 quant += get_dbquant(bs);
1226 : syskin 1.49.2.17 if (quant > 31)
1227 : edgomez 1.47 quant = 31;
1228 : syskin 1.49.2.17 else if (quant < 1)
1229 : edgomez 1.47 quant = 1;
1230 :     }
1231 : syskin 1.49.2.17 mb->quant = quant;
1232 : syskin 1.49.2.14
1233 :     if (dec->interlacing) {
1234 :     if (mb->cbp) {
1235 :     mb->field_dct = BitstreamGetBit(bs);
1236 :     DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
1237 :     }
1238 :    
1239 : syskin 1.49.2.16 if (mb->mode) {
1240 : syskin 1.49.2.14 mb->field_pred = BitstreamGetBit(bs);
1241 :     DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
1242 :    
1243 :     if (mb->field_pred) {
1244 :     mb->field_for_top = BitstreamGetBit(bs);
1245 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
1246 :     mb->field_for_bot = BitstreamGetBit(bs);
1247 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
1248 :     }
1249 :     }
1250 :     }
1251 :    
1252 : edgomez 1.47 } else {
1253 : syskin 1.49.2.16 mb->mode = MODE_DIRECT_NONE_MV;
1254 : edgomez 1.47 mb->cbp = 0;
1255 :     }
1256 :    
1257 : syskin 1.49.2.16 switch (mb->mode) {
1258 : edgomez 1.47 case MODE_DIRECT:
1259 : syskin 1.49.2.17 get_b_motion_vector(bs, &mv, 1, zeromv);
1260 : edgomez 1.47
1261 :     case MODE_DIRECT_NONE_MV:
1262 : syskin 1.49.2.17 for (i = 0; i < 4; i++) {
1263 :     mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) / TRD + mv.x);
1264 :     mb->b_mvs[i].x = (int32_t) ((mv.x == 0)
1265 :     ? ((TRB - TRD) * last_mb->mvs[i].x) / TRD
1266 :     : mb->mvs[i].x - last_mb->mvs[i].x);
1267 :     mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) / TRD + mv.y);
1268 :     mb->b_mvs[i].y = (int32_t) ((mv.y == 0)
1269 :     ? ((TRB - TRD) * last_mb->mvs[i].y) / TRD
1270 :     : mb->mvs[i].y - last_mb->mvs[i].y);
1271 : edgomez 1.47 }
1272 : syskin 1.49.2.17
1273 : edgomez 1.47 decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1274 : syskin 1.49.2.17 mb, x, y, bs, 1);
1275 : edgomez 1.47 break;
1276 :    
1277 :     case MODE_INTERPOLATE:
1278 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv);
1279 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1280 :    
1281 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv);
1282 :     dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0];
1283 : edgomez 1.47
1284 :     decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1285 : syskin 1.49.2.17 mb, x, y, bs, 0);
1286 : edgomez 1.47 break;
1287 :    
1288 :     case MODE_BACKWARD:
1289 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv);
1290 : edgomez 1.47 dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1291 :    
1292 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0);
1293 : edgomez 1.47 break;
1294 :    
1295 :     case MODE_FORWARD:
1296 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv);
1297 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1298 :    
1299 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1300 : edgomez 1.47 break;
1301 :    
1302 :     default:
1303 : syskin 1.49.2.16 DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode);
1304 : edgomez 1.47 }
1305 : edgomez 1.48 } /* End of for */
1306 :     }
1307 : edgomez 1.47
1308 :     #ifdef BFRAMES_DEC_DEBUG
1309 :     if (!first){
1310 :     first=1;
1311 :     if (fp)
1312 :     fclose(fp);
1313 :     }
1314 :     #endif
1315 :     }
1316 :    
1317 :     /* perform post processing if necessary, and output the image */
1318 : edgomez 1.49.2.13 void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs,
1319 : suxen_drol 1.49.2.1 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats, int coding_type)
1320 : edgomez 1.47 {
1321 :     image_output(img, dec->width, dec->height,
1322 : suxen_drol 1.49.2.1 dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride,
1323 :     frame->output.csp, dec->interlacing);
1324 :    
1325 : syskin 1.49.2.17 if (stats) {
1326 : suxen_drol 1.49.2.1 stats->type = coding2type(coding_type);
1327 :     stats->data.vop.time_base = (int)dec->time_base;
1328 : edgomez 1.49.2.6 stats->data.vop.time_increment = 0; /* XXX: todo */
1329 : suxen_drol 1.49.2.1 }
1330 : edgomez 1.47 }
1331 :    
1332 :    
1333 :     int
1334 :     decoder_decode(DECODER * dec,
1335 : syskin 1.49.2.17 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats)
1336 : edgomez 1.47 {
1337 :    
1338 :     Bitstream bs;
1339 :     uint32_t rounding;
1340 :     uint32_t reduced_resolution;
1341 :     uint32_t quant;
1342 :     uint32_t fcode_forward;
1343 :     uint32_t fcode_backward;
1344 :     uint32_t intra_dc_threshold;
1345 :     WARPPOINTS gmc_warp;
1346 : suxen_drol 1.49.2.1 int coding_type;
1347 :     int success, output, seen_something;
1348 : edgomez 1.47
1349 : edgomez 1.49.2.10 if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */
1350 : suxen_drol 1.49.2.1 return XVID_ERR_VERSION;
1351 : edgomez 1.47
1352 : suxen_drol 1.49.2.1 start_global_timer();
1353 : edgomez 1.47
1354 : suxen_drol 1.49.2.1 dec->low_delay_default = (frame->general & XVID_LOWDELAY);
1355 :     if ((frame->general & XVID_DISCONTINUITY))
1356 : edgomez 1.47 dec->frames = 0;
1357 : suxen_drol 1.49.2.1 dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL;
1358 : edgomez 1.47
1359 : syskin 1.49.2.17 if (frame->length < 0) { /* decoder flush */
1360 :     int ret;
1361 :     /* if not decoding "low_delay/packed", and this isn't low_delay and
1362 :     we have a reference frame, then outout the reference frame */
1363 : suxen_drol 1.49.2.3 if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) {
1364 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type);
1365 : syskin 1.49.2.17 dec->frames = 0;
1366 :     ret = 0;
1367 :     } else {
1368 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1369 :     ret = XVID_ERR_END;
1370 :     }
1371 : edgomez 1.47
1372 :     emms();
1373 :     stop_global_timer();
1374 : suxen_drol 1.49.2.3 return ret;
1375 : edgomez 1.47 }
1376 : edgomez 1.19
1377 : Isibaar 1.1 BitstreamInit(&bs, frame->bitstream, frame->length);
1378 :    
1379 : edgomez 1.48 /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */
1380 : edgomez 1.47 if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f)
1381 :     {
1382 :     image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width,
1383 : suxen_drol 1.49.2.1 (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing);
1384 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1385 : edgomez 1.47 emms();
1386 : syskin 1.49.2.17 return 1; /* one byte consumed */
1387 : edgomez 1.47 }
1388 :    
1389 : suxen_drol 1.49.2.1 success = 0;
1390 :     output = 0;
1391 :     seen_something = 0;
1392 :    
1393 : edgomez 1.47 repeat:
1394 :    
1395 : syskin 1.49.2.17 coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution,
1396 : edgomez 1.47 &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp);
1397 :    
1398 : edgomez 1.49.2.13 DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n",
1399 : suxen_drol 1.49.2.1 coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp);
1400 : Isibaar 1.1
1401 : syskin 1.49.2.17 if (coding_type == -1) { /* nothing */
1402 : edgomez 1.47 if (success) goto done;
1403 : syskin 1.49.2.17 if (stats) stats->type = XVID_TYPE_NOTHING;
1404 : edgomez 1.47 emms();
1405 : syskin 1.49.2.17 return BitstreamPos(&bs)/8;
1406 : Isibaar 1.1 }
1407 :    
1408 : syskin 1.49.2.17 if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */
1409 :    
1410 : suxen_drol 1.49.2.1 if (coding_type == -3)
1411 : edgomez 1.47 decoder_resize(dec);
1412 : edgomez 1.49.2.13
1413 : syskin 1.49.2.17 if (stats) {
1414 : suxen_drol 1.49.2.1 stats->type = XVID_TYPE_VOL;
1415 : edgomez 1.47 stats->data.vol.general = 0;
1416 : suxen_drol 1.49.2.1 /*XXX: if (dec->interlacing)
1417 :     stats->data.vol.general |= ++INTERLACING; */
1418 : edgomez 1.47 stats->data.vol.width = dec->width;
1419 :     stats->data.vol.height = dec->height;
1420 : suxen_drol 1.49.2.1 stats->data.vol.par = dec->aspect_ratio;
1421 : edgomez 1.47 stats->data.vol.par_width = dec->par_width;
1422 :     stats->data.vol.par_height = dec->par_height;
1423 :     emms();
1424 : suxen_drol 1.49.2.1 return BitstreamPos(&bs)/8; /* number of bytes consumed */
1425 : edgomez 1.47 }
1426 :     goto repeat;
1427 : edgomez 1.49.2.13 }
1428 : edgomez 1.47
1429 : edgomez 1.48 dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; /* init pred vector to 0 */
1430 : edgomez 1.47
1431 :     /* packed_mode: special-N_VOP treament */
1432 : syskin 1.49.2.17 if (dec->packed_mode && coding_type == N_VOP) {
1433 :     if (dec->low_delay_default && dec->frames > 0) {
1434 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type);
1435 : edgomez 1.47 output = 1;
1436 :     }
1437 :     /* ignore otherwise */
1438 : syskin 1.49.2.17 } else if (coding_type != B_VOP) {
1439 :     switch(coding_type) {
1440 : edgomez 1.47 case I_VOP :
1441 :     decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold);
1442 :     break;
1443 :     case P_VOP :
1444 : edgomez 1.49.2.13 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1445 : edgomez 1.47 fcode_forward, intra_dc_threshold, NULL);
1446 :     break;
1447 :     case S_VOP :
1448 : edgomez 1.49.2.13 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1449 : edgomez 1.47 fcode_forward, intra_dc_threshold, &gmc_warp);
1450 :     break;
1451 :     case N_VOP :
1452 : edgomez 1.49.2.6 /* XXX: not_coded vops are not used for forward prediction */
1453 :     /* we should not swap(last_mbs,mbs) */
1454 : edgomez 1.47 image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height);
1455 :     break;
1456 :     }
1457 :    
1458 : syskin 1.49.2.17 if (reduced_resolution) {
1459 : edgomez 1.47 image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs,
1460 :     (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width,
1461 : suxen_drol 1.49.2.1 16, 0);
1462 : edgomez 1.47 }
1463 : Isibaar 1.1
1464 : edgomez 1.47 /* note: for packed_mode, output is performed when the special-N_VOP is decoded */
1465 : syskin 1.49.2.17 if (!(dec->low_delay_default && dec->packed_mode)) {
1466 :     if (dec->low_delay) {
1467 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type);
1468 : edgomez 1.47 output = 1;
1469 : syskin 1.49.2.17 } else if (dec->frames > 0) { /* is the reference frame valid? */
1470 : edgomez 1.47 /* output the reference frame */
1471 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type);
1472 : edgomez 1.47 output = 1;
1473 :     }
1474 :     }
1475 : Isibaar 1.18
1476 : chenm001 1.14 image_swap(&dec->refn[0], &dec->refn[1]);
1477 :     image_swap(&dec->cur, &dec->refn[0]);
1478 : syskin 1.49.2.17 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs);
1479 : edgomez 1.47 dec->last_reduced_resolution = reduced_resolution;
1480 : syskin 1.49.2.17 dec->last_coding_type = coding_type;
1481 : edgomez 1.47
1482 :     dec->frames++;
1483 :     seen_something = 1;
1484 : chenm001 1.31
1485 : syskin 1.49.2.17 } else { /* B_VOP */
1486 : edgomez 1.47
1487 : syskin 1.49.2.17 if (dec->low_delay) {
1488 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n");
1489 : edgomez 1.47 dec->low_delay = 1;
1490 :     }
1491 :    
1492 : syskin 1.49.2.17 if (dec->frames < 2) {
1493 : edgomez 1.47 /* attemping to decode a bvop without atleast 2 reference frames */
1494 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1495 :     "broken b-frame, mising ref frames");
1496 : syskin 1.49.2.17 } else if (dec->time_pp <= dec->time_bp) {
1497 : edgomez 1.49.2.13 /* this occurs when dx50_bvop_compatibility==0 sequences are
1498 : edgomez 1.47 decoded in vfw. */
1499 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1500 :     "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp);
1501 : syskin 1.49.2.17 } else {
1502 : edgomez 1.47 decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward);
1503 :     }
1504 :    
1505 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type);
1506 : edgomez 1.47 output = 1;
1507 :     dec->frames++;
1508 : chenm001 1.14 }
1509 :    
1510 : edgomez 1.47 BitstreamByteAlign(&bs);
1511 :    
1512 :     /* low_delay_default mode: repeat in packed_mode */
1513 : syskin 1.49.2.17 if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) {
1514 : edgomez 1.47 success = 1;
1515 :     goto repeat;
1516 :     }
1517 :    
1518 :     done :
1519 :    
1520 :     /* low_delay_default mode: if we've gotten here without outputting anything,
1521 :     then output the recently decoded frame, or print an error message */
1522 : syskin 1.49.2.17 if (dec->low_delay_default && output == 0) {
1523 :     if (dec->packed_mode && seen_something) {
1524 : edgomez 1.47 /* output the recently decoded frame */
1525 : suxen_drol 1.49.2.1 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type);
1526 : syskin 1.49.2.17 } else {
1527 : edgomez 1.47 image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128);
1528 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1529 :     "warning: nothing to output");
1530 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64,
1531 :     "bframe decoder lag");
1532 :    
1533 : edgomez 1.49.2.13 decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP);
1534 : suxen_drol 1.49.2.1 if (stats) stats->type = XVID_TYPE_NOTHING;
1535 : edgomez 1.47 }
1536 :     }
1537 :    
1538 : Isibaar 1.1 emms();
1539 :     stop_global_timer();
1540 :    
1541 : suxen_drol 1.49.2.1 return BitstreamPos(&bs) / 8; /* number of bytes consumed */
1542 : Isibaar 1.1 }

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