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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 : Isibaar 1.49.2.28 * $Id: decoder.c,v 1.49.2.27 2003/12/20 11:54:27 Isibaar Exp $
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 : edgomez 1.49.2.20 #include "quant/quant_matrix.h"
45 : Isibaar 1.1 #include "dct/idct.h"
46 :     #include "dct/fdct.h"
47 :     #include "utils/mem_transfer.h"
48 :     #include "image/interpolate8x8.h"
49 : edgomez 1.47 #include "image/reduced.h"
50 :     #include "image/font.h"
51 : Isibaar 1.1
52 :     #include "bitstream/mbcoding.h"
53 :     #include "prediction/mbprediction.h"
54 :     #include "utils/timer.h"
55 :     #include "utils/emms.h"
56 : edgomez 1.47 #include "motion/motion.h"
57 : chl 1.49.2.9 #include "motion/gmc.h"
58 : Isibaar 1.1
59 :     #include "image/image.h"
60 :     #include "image/colorspace.h"
61 : edgomez 1.49.2.24 #include "image/postprocessing.h"
62 : Isibaar 1.3 #include "utils/mem_align.h"
63 : Isibaar 1.1
64 : syskin 1.49.2.17 static int
65 : edgomez 1.47 decoder_resize(DECODER * dec)
66 : Isibaar 1.1 {
67 : edgomez 1.47 /* free existing */
68 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
69 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
70 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
71 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
72 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
73 :    
74 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
75 : Isibaar 1.1
76 : edgomez 1.49.2.13 if (dec->last_mbs)
77 : edgomez 1.47 xvid_free(dec->last_mbs);
78 :     if (dec->mbs)
79 :     xvid_free(dec->mbs);
80 : Isibaar 1.1
81 : edgomez 1.47 /* realloc */
82 : Isibaar 1.1 dec->mb_width = (dec->width + 15) / 16;
83 :     dec->mb_height = (dec->height + 15) / 16;
84 :    
85 :     dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE;
86 :     dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE;
87 : edgomez 1.19
88 :     if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) {
89 : Isibaar 1.3 xvid_free(dec);
90 : Isibaar 1.1 return XVID_ERR_MEMORY;
91 :     }
92 :    
93 : edgomez 1.19 if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) {
94 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
95 : Isibaar 1.3 xvid_free(dec);
96 : Isibaar 1.1 return XVID_ERR_MEMORY;
97 :     }
98 : edgomez 1.47
99 : edgomez 1.48 /* Support B-frame to reference last 2 frame */
100 : edgomez 1.19 if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) {
101 : chenm001 1.11 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
102 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
103 :     xvid_free(dec);
104 :     return XVID_ERR_MEMORY;
105 :     }
106 : edgomez 1.47 if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) {
107 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
108 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
109 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
110 :     xvid_free(dec);
111 :     return XVID_ERR_MEMORY;
112 :     }
113 :    
114 :     if (image_create(&dec->qtmp, dec->edged_width, dec->edged_height)) {
115 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
116 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
117 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
118 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
119 :     xvid_free(dec);
120 :     return XVID_ERR_MEMORY;
121 :     }
122 :    
123 :     if (image_create(&dec->gmc, dec->edged_width, dec->edged_height)) {
124 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
125 : chenm001 1.14 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
126 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
127 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
128 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
129 : chenm001 1.14 xvid_free(dec);
130 :     return XVID_ERR_MEMORY;
131 :     }
132 : Isibaar 1.1
133 : edgomez 1.19 dec->mbs =
134 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
135 :     CACHE_LINE);
136 :     if (dec->mbs == NULL) {
137 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
138 : chenm001 1.14 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
139 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
140 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
141 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
142 : chenm001 1.14 xvid_free(dec);
143 :     return XVID_ERR_MEMORY;
144 :     }
145 : Isibaar 1.20 memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
146 :    
147 : edgomez 1.48 /* For skip MB flag */
148 : edgomez 1.19 dec->last_mbs =
149 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
150 :     CACHE_LINE);
151 :     if (dec->last_mbs == NULL) {
152 : chenm001 1.14 xvid_free(dec->mbs);
153 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
154 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
155 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
156 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
157 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
158 : Isibaar 1.3 xvid_free(dec);
159 : Isibaar 1.1 return XVID_ERR_MEMORY;
160 :     }
161 : Isibaar 1.20
162 :     memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
163 : Isibaar 1.1
164 : suxen_drol 1.49.2.1 return 0;
165 : edgomez 1.47 }
166 :    
167 :    
168 :     int
169 : suxen_drol 1.49.2.1 decoder_create(xvid_dec_create_t * create)
170 : edgomez 1.47 {
171 :     DECODER *dec;
172 :    
173 : edgomez 1.49.2.10 if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */
174 : suxen_drol 1.49.2.1 return XVID_ERR_VERSION;
175 :    
176 : edgomez 1.47 dec = xvid_malloc(sizeof(DECODER), CACHE_LINE);
177 :     if (dec == NULL) {
178 :     return XVID_ERR_MEMORY;
179 :     }
180 : edgomez 1.49.2.20
181 : edgomez 1.47 memset(dec, 0, sizeof(DECODER));
182 :    
183 : edgomez 1.49.2.20 dec->mpeg_quant_matrices = xvid_malloc(sizeof(uint16_t) * 64 * 8, CACHE_LINE);
184 :     if (dec->mpeg_quant_matrices == NULL) {
185 :     xvid_free(dec);
186 :     return XVID_ERR_MEMORY;
187 :     }
188 :    
189 : suxen_drol 1.49.2.1 create->handle = dec;
190 : edgomez 1.47
191 : suxen_drol 1.49.2.1 dec->width = create->width;
192 :     dec->height = create->height;
193 : edgomez 1.47
194 :     image_null(&dec->cur);
195 :     image_null(&dec->refn[0]);
196 :     image_null(&dec->refn[1]);
197 :     image_null(&dec->tmp);
198 :     image_null(&dec->qtmp);
199 :    
200 : edgomez 1.48 /* image based GMC */
201 : edgomez 1.47 image_null(&dec->gmc);
202 :    
203 :    
204 :     dec->mbs = NULL;
205 :     dec->last_mbs = NULL;
206 :    
207 : Isibaar 1.1 init_timer();
208 : Isibaar 1.49.2.28 init_postproc(&dec->postproc);
209 : edgomez 1.49.2.20 init_mpeg_matrix(dec->mpeg_quant_matrices);
210 : Isibaar 1.1
211 : edgomez 1.48 /* For B-frame support (used to save reference frame's time */
212 : edgomez 1.47 dec->frames = 0;
213 : chenm001 1.14 dec->time = dec->time_base = dec->last_time_base = 0;
214 : edgomez 1.47 dec->low_delay = 0;
215 :     dec->packed_mode = 0;
216 :    
217 :     dec->fixed_dimensions = (dec->width > 0 && dec->height > 0);
218 : edgomez 1.19
219 : edgomez 1.47 if (dec->fixed_dimensions)
220 :     return decoder_resize(dec);
221 :     else
222 : edgomez 1.49.2.13 return 0;
223 : Isibaar 1.1 }
224 :    
225 :    
226 : edgomez 1.19 int
227 :     decoder_destroy(DECODER * dec)
228 : Isibaar 1.1 {
229 : chenm001 1.14 xvid_free(dec->last_mbs);
230 : Isibaar 1.3 xvid_free(dec->mbs);
231 : edgomez 1.47
232 : edgomez 1.48 /* image based GMC */
233 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
234 : edgomez 1.47
235 : chenm001 1.11 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
236 : chenm001 1.14 image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
237 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
238 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
239 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
240 : edgomez 1.49.2.20 xvid_free(dec->mpeg_quant_matrices);
241 : Isibaar 1.3 xvid_free(dec);
242 : Isibaar 1.1
243 :     write_timer();
244 : suxen_drol 1.49.2.1 return 0;
245 : Isibaar 1.1 }
246 :    
247 : edgomez 1.19 static const int32_t dquant_table[4] = {
248 : Isibaar 1.1 -1, -2, 1, 2
249 :     };
250 :    
251 : edgomez 1.48 /* decode an intra macroblock */
252 : syskin 1.49.2.17 static void
253 : edgomez 1.19 decoder_mbintra(DECODER * dec,
254 :     MACROBLOCK * pMB,
255 :     const uint32_t x_pos,
256 :     const uint32_t y_pos,
257 :     const uint32_t acpred_flag,
258 :     const uint32_t cbp,
259 :     Bitstream * bs,
260 :     const uint32_t quant,
261 : chenm001 1.26 const uint32_t intra_dc_threshold,
262 : edgomez 1.47 const unsigned int bound,
263 :     const int reduced_resolution)
264 : Isibaar 1.1 {
265 : edgomez 1.7
266 :     DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE);
267 : edgomez 1.19 DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
268 : edgomez 1.7
269 : h 1.8 uint32_t stride = dec->edged_width;
270 :     uint32_t stride2 = stride / 2;
271 :     uint32_t next_block = stride * 8;
272 : h 1.5 uint32_t i;
273 :     uint32_t iQuant = pMB->quant;
274 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
275 :    
276 : edgomez 1.47 if (reduced_resolution) {
277 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
278 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
279 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
280 :     }else{
281 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
282 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
283 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
284 :     }
285 : edgomez 1.7
286 : edgomez 1.48 memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */
287 : h 1.5
288 : edgomez 1.19 for (i = 0; i < 6; i++) {
289 : h 1.5 uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4);
290 : Isibaar 1.1 int16_t predictors[8];
291 :     int start_coeff;
292 :    
293 :     start_timer();
294 : edgomez 1.19 predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64],
295 : chenm001 1.26 iQuant, iDcScaler, predictors, bound);
296 : edgomez 1.19 if (!acpred_flag) {
297 : h 1.5 pMB->acpred_directions[i] = 0;
298 : Isibaar 1.1 }
299 :     stop_prediction_timer();
300 :    
301 : edgomez 1.19 if (quant < intra_dc_threshold) {
302 : Isibaar 1.1 int dc_size;
303 :     int dc_dif;
304 :    
305 : edgomez 1.19 dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs);
306 :     dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0;
307 : Isibaar 1.1
308 : edgomez 1.19 if (dc_size > 8) {
309 : edgomez 1.48 BitstreamSkip(bs, 1); /* marker */
310 : Isibaar 1.1 }
311 : edgomez 1.19
312 :     block[i * 64 + 0] = dc_dif;
313 : Isibaar 1.1 start_coeff = 1;
314 : chenm001 1.26
315 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif);
316 : edgomez 1.19 } else {
317 : Isibaar 1.1 start_coeff = 0;
318 :     }
319 :    
320 :     start_timer();
321 : edgomez 1.48 if (cbp & (1 << (5 - i))) /* coded */
322 : Isibaar 1.1 {
323 : edgomez 1.47 int direction = dec->alternate_vertical_scan ?
324 :     2 : pMB->acpred_directions[i];
325 :    
326 :     get_intra_block(bs, &block[i * 64], direction, start_coeff);
327 : Isibaar 1.1 }
328 :     stop_coding_timer();
329 :    
330 :     start_timer();
331 : edgomez 1.19 add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors);
332 : Isibaar 1.1 stop_prediction_timer();
333 :    
334 :     start_timer();
335 : edgomez 1.19 if (dec->quant_type == 0) {
336 : edgomez 1.49.2.20 dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
337 : edgomez 1.19 } else {
338 : edgomez 1.49.2.20 dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
339 : Isibaar 1.1 }
340 :     stop_iquant_timer();
341 :    
342 :     start_timer();
343 : edgomez 1.19 idct(&data[i * 64]);
344 : Isibaar 1.1 stop_idct_timer();
345 : edgomez 1.47
346 : h 1.5 }
347 : Isibaar 1.1
348 : edgomez 1.19 if (dec->interlacing && pMB->field_dct) {
349 : h 1.8 next_block = stride;
350 :     stride *= 2;
351 : Isibaar 1.1 }
352 : h 1.5
353 :     start_timer();
354 : edgomez 1.47
355 :     if (reduced_resolution)
356 :     {
357 :     next_block*=2;
358 :     copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
359 :     copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
360 :     copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
361 :     copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
362 :     copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
363 :     copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
364 :     }else{
365 :     transfer_16to8copy(pY_Cur, &data[0 * 64], stride);
366 :     transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride);
367 :     transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride);
368 :     transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride);
369 :     transfer_16to8copy(pU_Cur, &data[4 * 64], stride2);
370 :     transfer_16to8copy(pV_Cur, &data[5 * 64], stride2);
371 :     }
372 : h 1.5 stop_transfer_timer();
373 : Isibaar 1.1 }
374 :    
375 : syskin 1.49.2.17 static void
376 :     decoder_mb_decode(DECODER * dec,
377 :     const uint32_t cbp,
378 :     Bitstream * bs,
379 :     uint8_t * pY_Cur,
380 :     uint8_t * pU_Cur,
381 :     uint8_t * pV_Cur,
382 :     const int reduced_resolution,
383 :     const MACROBLOCK * pMB)
384 :     {
385 :     DECLARE_ALIGNED_MATRIX(block, 1, 64, int16_t, CACHE_LINE);
386 :     DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
387 : Isibaar 1.1
388 : edgomez 1.49.2.18 int stride = dec->edged_width;
389 :     int next_block = stride * (reduced_resolution ? 16 : 8);
390 : syskin 1.49.2.17 const int stride2 = stride/2;
391 :     int i;
392 :     const uint32_t iQuant = pMB->quant;
393 :     const int direction = dec->alternate_vertical_scan ? 2 : 0;
394 :     const quant_interFuncPtr dequant = dec->quant_type == 0 ? dequant_h263_inter : dequant_mpeg_inter;
395 : Isibaar 1.1
396 : syskin 1.49.2.17 for (i = 0; i < 6; i++) {
397 :    
398 :     if (cbp & (1 << (5 - i))) { /* coded */
399 :    
400 :     memset(block, 0, 64 * sizeof(int16_t)); /* clear */
401 :    
402 :     start_timer();
403 :     get_inter_block(bs, block, direction);
404 :     stop_coding_timer();
405 :    
406 :     start_timer();
407 : edgomez 1.49.2.20 dequant(&data[i * 64], block, iQuant, dec->mpeg_quant_matrices);
408 : syskin 1.49.2.17 stop_iquant_timer();
409 :    
410 :     start_timer();
411 :     idct(&data[i * 64]);
412 :     stop_idct_timer();
413 :     }
414 :     }
415 :    
416 :     if (dec->interlacing && pMB->field_dct) {
417 :     next_block = stride;
418 :     stride *= 2;
419 :     }
420 :    
421 :     start_timer();
422 :     if (reduced_resolution) {
423 :     if (cbp & 32)
424 :     add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
425 :     if (cbp & 16)
426 :     add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
427 :     if (cbp & 8)
428 :     add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
429 :     if (cbp & 4)
430 :     add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
431 :     if (cbp & 2)
432 :     add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
433 :     if (cbp & 1)
434 :     add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
435 :     } else {
436 :     if (cbp & 32)
437 :     transfer_16to8add(pY_Cur, &data[0 * 64], stride);
438 :     if (cbp & 16)
439 :     transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride);
440 :     if (cbp & 8)
441 :     transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride);
442 :     if (cbp & 4)
443 :     transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride);
444 :     if (cbp & 2)
445 :     transfer_16to8add(pU_Cur, &data[4 * 64], stride2);
446 :     if (cbp & 1)
447 :     transfer_16to8add(pV_Cur, &data[5 * 64], stride2);
448 :     }
449 :     stop_transfer_timer();
450 :     }
451 : Isibaar 1.1
452 : edgomez 1.48 /* decode an inter macroblock */
453 : syskin 1.49.2.17 static void
454 : edgomez 1.19 decoder_mbinter(DECODER * dec,
455 :     const MACROBLOCK * pMB,
456 :     const uint32_t x_pos,
457 :     const uint32_t y_pos,
458 :     const uint32_t cbp,
459 :     Bitstream * bs,
460 : edgomez 1.47 const uint32_t rounding,
461 : syskin 1.49.2.17 const int reduced_resolution,
462 :     const int ref)
463 : Isibaar 1.1 {
464 : h 1.8 uint32_t stride = dec->edged_width;
465 :     uint32_t stride2 = stride / 2;
466 : edgomez 1.7 uint32_t i;
467 : syskin 1.49.2.17
468 : h 1.5 uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
469 : edgomez 1.47
470 : Isibaar 1.1 int uv_dx, uv_dy;
471 : edgomez 1.47 VECTOR mv[4]; /* local copy of mvs */
472 :    
473 :     if (reduced_resolution) {
474 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
475 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
476 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
477 :     for (i = 0; i < 4; i++) {
478 :     mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x);
479 :     mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y);
480 :     }
481 :     } else {
482 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
483 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
484 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
485 :     for (i = 0; i < 4; i++)
486 :     mv[i] = pMB->mvs[i];
487 :     }
488 : edgomez 1.49.2.13
489 : syskin 1.49.2.17 start_timer();
490 : edgomez 1.47
491 : syskin 1.49.2.17 if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */
492 : edgomez 1.49.2.13
493 : syskin 1.49.2.17 uv_dx = mv[0].x;
494 :     uv_dy = mv[0].y;
495 :     if (dec->quarterpel) {
496 :     uv_dx /= 2;
497 :     uv_dy /= 2;
498 :     }
499 : edgomez 1.47 uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
500 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
501 :    
502 :     if (reduced_resolution)
503 :     interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
504 : syskin 1.49.2.17 mv[0].x, mv[0].y, stride, rounding);
505 :     else if (dec->quarterpel)
506 :     interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64,
507 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
508 : edgomez 1.47 mv[0].x, mv[0].y, stride, rounding);
509 :     else
510 : syskin 1.49.2.17 interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos,
511 :     mv[0].x, mv[0].y, stride, rounding);
512 : edgomez 1.47
513 : syskin 1.49.2.17 } else { /* MODE_INTER4V */
514 : edgomez 1.47
515 : syskin 1.49.2.17 if(dec->quarterpel) {
516 :     uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2);
517 :     uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2);
518 :     } else {
519 :     uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x;
520 :     uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y;
521 :     }
522 : edgomez 1.47
523 : syskin 1.49.2.17 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
524 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
525 : edgomez 1.47
526 : syskin 1.49.2.17 if (reduced_resolution) {
527 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
528 : syskin 1.49.2.17 mv[0].x, mv[0].y, stride, rounding);
529 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos,
530 : syskin 1.49.2.17 mv[1].x, mv[1].y, stride, rounding);
531 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos, 32*y_pos + 16,
532 : syskin 1.49.2.17 mv[2].x, mv[2].y, stride, rounding);
533 : edgomez 1.49.2.13 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos + 16,
534 : syskin 1.49.2.17 mv[3].x, mv[3].y, stride, rounding);
535 : edgomez 1.47 interpolate16x16_switch(dec->cur.u, dec->refn[0].u , 16 * x_pos, 16 * y_pos,
536 : syskin 1.49.2.17 uv_dx, uv_dy, stride2, rounding);
537 : edgomez 1.47 interpolate16x16_switch(dec->cur.v, dec->refn[0].v , 16 * x_pos, 16 * y_pos,
538 : syskin 1.49.2.17 uv_dx, uv_dy, stride2, rounding);
539 : edgomez 1.47
540 : syskin 1.49.2.17 } else if (dec->quarterpel) {
541 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
542 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
543 :     mv[0].x, mv[0].y, stride, rounding);
544 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
545 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
546 :     mv[1].x, mv[1].y, stride, rounding);
547 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
548 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
549 :     mv[2].x, mv[2].y, stride, rounding);
550 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
551 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
552 :     mv[3].x, mv[3].y, stride, rounding);
553 :     } else {
554 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos,
555 :     mv[0].x, mv[0].y, stride, rounding);
556 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos,
557 :     mv[1].x, mv[1].y, stride, rounding);
558 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8,
559 :     mv[2].x, mv[2].y, stride, rounding);
560 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8,
561 :     mv[3].x, mv[3].y, stride, rounding);
562 : edgomez 1.47 }
563 :     }
564 :    
565 : syskin 1.49.2.17 /* chroma */
566 :     if (reduced_resolution) {
567 :     interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos,
568 :     uv_dx, uv_dy, stride2, rounding);
569 :     interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos,
570 :     uv_dx, uv_dy, stride2, rounding);
571 :     } else {
572 :     interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos,
573 :     uv_dx, uv_dy, stride2, rounding);
574 :     interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos,
575 :     uv_dx, uv_dy, stride2, rounding);
576 : edgomez 1.47 }
577 : Isibaar 1.1
578 : syskin 1.49.2.17 stop_comp_timer();
579 : Isibaar 1.34
580 : syskin 1.49.2.17 if (cbp)
581 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur,
582 :     reduced_resolution, pMB);
583 : edgomez 1.47 }
584 :    
585 :     static void
586 :     decoder_mbgmc(DECODER * dec,
587 :     MACROBLOCK * const pMB,
588 :     const uint32_t x_pos,
589 :     const uint32_t y_pos,
590 :     const uint32_t fcode,
591 :     const uint32_t cbp,
592 :     Bitstream * bs,
593 : syskin 1.49.2.17 const uint32_t rounding)
594 : edgomez 1.47 {
595 :     const uint32_t stride = dec->edged_width;
596 :     const uint32_t stride2 = stride / 2;
597 : syskin 1.49.2.17
598 : edgomez 1.47 uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
599 :     uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
600 :     uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
601 :    
602 : syskin 1.49.2.17 NEW_GMC_DATA * gmc_data = &dec->new_gmc_data;
603 :    
604 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
605 : Isibaar 1.1
606 :     start_timer();
607 : edgomez 1.49.2.13
608 : edgomez 1.47 /* this is where the calculations are done */
609 : edgomez 1.49.2.13
610 : syskin 1.49.2.17 gmc_data->predict_16x16(gmc_data,
611 :     dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y,
612 :     stride, stride, x_pos, y_pos, rounding);
613 :    
614 :     gmc_data->predict_8x8(gmc_data,
615 :     dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u,
616 :     dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v,
617 :     stride2, stride2, x_pos, y_pos, rounding);
618 : chl 1.49.2.9
619 : syskin 1.49.2.17 gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel);
620 : chl 1.49.2.9
621 : syskin 1.49.2.17 pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode);
622 :     pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode);
623 : chl 1.49.2.9
624 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
625 : edgomez 1.49.2.13
626 : edgomez 1.47 stop_transfer_timer();
627 : edgomez 1.49.2.13
628 : syskin 1.49.2.17 if (cbp)
629 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
630 : Isibaar 1.1
631 :     }
632 :    
633 :    
634 : syskin 1.49.2.17 static void
635 : edgomez 1.19 decoder_iframe(DECODER * dec,
636 : syskin 1.49.2.17 Bitstream * bs,
637 :     int reduced_resolution,
638 :     int quant,
639 :     int intra_dc_threshold)
640 : Isibaar 1.1 {
641 : chenm001 1.26 uint32_t bound;
642 :     uint32_t x, y;
643 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
644 :     uint32_t mb_height = dec->mb_height;
645 : edgomez 1.49.2.13
646 : syskin 1.49.2.17 if (reduced_resolution) {
647 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
648 :     mb_height = (dec->height + 31) / 32;
649 :     }
650 : chenm001 1.25
651 : chenm001 1.26 bound = 0;
652 : edgomez 1.7
653 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
654 :     for (x = 0; x < mb_width; x++) {
655 : chenm001 1.26 MACROBLOCK *mb;
656 : Isibaar 1.1 uint32_t mcbpc;
657 :     uint32_t cbpc;
658 :     uint32_t acpred_flag;
659 :     uint32_t cbpy;
660 :     uint32_t cbp;
661 :    
662 : chenm001 1.26 while (BitstreamShowBits(bs, 9) == 1)
663 :     BitstreamSkip(bs, 9);
664 :    
665 :     if (check_resync_marker(bs, 0))
666 :     {
667 : edgomez 1.49.2.13 bound = read_video_packet_header(bs, dec, 0,
668 : edgomez 1.47 &quant, NULL, NULL, &intra_dc_threshold);
669 :     x = bound % mb_width;
670 :     y = bound / mb_width;
671 : chenm001 1.26 }
672 :     mb = &dec->mbs[y * dec->mb_width + x];
673 :    
674 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
675 : chenm001 1.26
676 : Isibaar 1.1 mcbpc = get_mcbpc_intra(bs);
677 :     mb->mode = mcbpc & 7;
678 :     cbpc = (mcbpc >> 4);
679 :    
680 :     acpred_flag = BitstreamGetBit(bs);
681 :    
682 :     cbpy = get_cbpy(bs, 1);
683 :     cbp = (cbpy << 2) | cbpc;
684 :    
685 : edgomez 1.19 if (mb->mode == MODE_INTRA_Q) {
686 :     quant += dquant_table[BitstreamGetBits(bs, 2)];
687 :     if (quant > 31) {
688 : Isibaar 1.1 quant = 31;
689 : edgomez 1.19 } else if (quant < 1) {
690 : Isibaar 1.1 quant = 1;
691 :     }
692 :     }
693 :     mb->quant = quant;
694 : chenm001 1.30 mb->mvs[0].x = mb->mvs[0].y =
695 :     mb->mvs[1].x = mb->mvs[1].y =
696 :     mb->mvs[2].x = mb->mvs[2].y =
697 :     mb->mvs[3].x = mb->mvs[3].y =0;
698 : h 1.5
699 : edgomez 1.19 if (dec->interlacing) {
700 : h 1.5 mb->field_dct = BitstreamGetBit(bs);
701 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct);
702 : h 1.5 }
703 : Isibaar 1.1
704 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
705 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
706 :    
707 : Isibaar 1.1 }
708 : albeu 1.32 if(dec->out_frm)
709 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width);
710 : Isibaar 1.1 }
711 : edgomez 1.7
712 : Isibaar 1.1 }
713 :    
714 :    
715 : syskin 1.49.2.17 static void
716 : edgomez 1.19 get_motion_vector(DECODER * dec,
717 : syskin 1.49.2.17 Bitstream * bs,
718 :     int x,
719 :     int y,
720 :     int k,
721 :     VECTOR * ret_mv,
722 :     int fcode,
723 :     const int bound)
724 : Isibaar 1.1 {
725 : edgomez 1.7
726 : syskin 1.49.2.17 const int scale_fac = 1 << (fcode - 1);
727 :     const int high = (32 * scale_fac) - 1;
728 :     const int low = ((-32) * scale_fac);
729 :     const int range = (64 * scale_fac);
730 : Isibaar 1.1
731 : syskin 1.49.2.17 const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k);
732 : edgomez 1.47 VECTOR mv;
733 : Isibaar 1.1
734 : edgomez 1.47 mv.x = get_mv(bs, fcode);
735 :     mv.y = get_mv(bs, fcode);
736 : edgomez 1.19
737 : 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);
738 : chenm001 1.26
739 : edgomez 1.47 mv.x += pmv.x;
740 :     mv.y += pmv.y;
741 : Isibaar 1.1
742 : edgomez 1.47 if (mv.x < low) {
743 :     mv.x += range;
744 :     } else if (mv.x > high) {
745 :     mv.x -= range;
746 : Isibaar 1.1 }
747 :    
748 : edgomez 1.47 if (mv.y < low) {
749 :     mv.y += range;
750 :     } else if (mv.y > high) {
751 :     mv.y -= range;
752 : Isibaar 1.1 }
753 :    
754 : edgomez 1.47 ret_mv->x = mv.x;
755 :     ret_mv->y = mv.y;
756 :     }
757 :    
758 :     /* for P_VOP set gmc_warp to NULL */
759 : syskin 1.49.2.17 static void
760 : edgomez 1.19 decoder_pframe(DECODER * dec,
761 : syskin 1.49.2.17 Bitstream * bs,
762 :     int rounding,
763 :     int reduced_resolution,
764 :     int quant,
765 :     int fcode,
766 :     int intra_dc_threshold,
767 :     const WARPPOINTS *const gmc_warp)
768 : Isibaar 1.1 {
769 :     uint32_t x, y;
770 : chenm001 1.26 uint32_t bound;
771 : albeu 1.32 int cp_mb, st_mb;
772 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
773 :     uint32_t mb_height = dec->mb_height;
774 : edgomez 1.49.2.13
775 : syskin 1.49.2.17 if (reduced_resolution) {
776 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
777 :     mb_height = (dec->height + 31) / 32;
778 :     }
779 : Isibaar 1.1
780 :     start_timer();
781 : edgomez 1.19 image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
782 : syskin 1.49.2.17 dec->width, dec->height);
783 : Isibaar 1.1 stop_edges_timer();
784 :    
785 : syskin 1.49.2.17 if (gmc_warp) {
786 :     /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
787 : edgomez 1.49.2.13 generate_GMCparameters( dec->sprite_warping_points,
788 :     dec->sprite_warping_accuracy, gmc_warp,
789 : chl 1.49.2.9 dec->width, dec->height, &dec->new_gmc_data);
790 : edgomez 1.47
791 : syskin 1.49.2.17 /* image warping is done block-based in decoder_mbgmc(), now */
792 : edgomez 1.47 }
793 :    
794 : chenm001 1.26 bound = 0;
795 :    
796 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
797 : albeu 1.32 cp_mb = st_mb = 0;
798 : edgomez 1.47 for (x = 0; x < mb_width; x++) {
799 : chenm001 1.26 MACROBLOCK *mb;
800 :    
801 : edgomez 1.48 /* skip stuffing */
802 : chenm001 1.26 while (BitstreamShowBits(bs, 10) == 1)
803 :     BitstreamSkip(bs, 10);
804 :    
805 : syskin 1.49.2.17 if (check_resync_marker(bs, fcode - 1)) {
806 : edgomez 1.49.2.13 bound = read_video_packet_header(bs, dec, fcode - 1,
807 : edgomez 1.47 &quant, &fcode, NULL, &intra_dc_threshold);
808 :     x = bound % mb_width;
809 :     y = bound / mb_width;
810 : chenm001 1.26 }
811 :     mb = &dec->mbs[y * dec->mb_width + x];
812 :    
813 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
814 : suxen_drol 1.23
815 : syskin 1.49.2.17 if (!(BitstreamGetBit(bs))) { /* block _is_ coded */
816 :     uint32_t mcbpc, cbpc, cbpy, cbp;
817 :     uint32_t intra, acpred_flag = 0;
818 : edgomez 1.48 int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */
819 : Isibaar 1.1
820 : albeu 1.32 cp_mb++;
821 : Isibaar 1.1 mcbpc = get_mcbpc_inter(bs);
822 :     mb->mode = mcbpc & 7;
823 :     cbpc = (mcbpc >> 4);
824 : edgomez 1.49.2.13
825 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode);
826 :     DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc);
827 : Isibaar 1.1
828 :     intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q);
829 : edgomez 1.19
830 : edgomez 1.47 if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q))
831 :     mcsel = BitstreamGetBit(bs);
832 : syskin 1.49.2.17 else if (intra)
833 : edgomez 1.49.2.12 acpred_flag = BitstreamGetBit(bs);
834 : edgomez 1.47
835 : chenm001 1.26 cbpy = get_cbpy(bs, intra);
836 : syskin 1.49.2.17 DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel);
837 : chenm001 1.25
838 : Isibaar 1.1 cbp = (cbpy << 2) | cbpc;
839 :    
840 : edgomez 1.19 if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) {
841 : chenm001 1.26 int dquant = dquant_table[BitstreamGetBits(bs, 2)];
842 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant);
843 : chenm001 1.26 quant += dquant;
844 : edgomez 1.19 if (quant > 31) {
845 : Isibaar 1.1 quant = 31;
846 : chenm001 1.26 } else if (quant < 1) {
847 : Isibaar 1.1 quant = 1;
848 :     }
849 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant);
850 : Isibaar 1.1 }
851 :     mb->quant = quant;
852 : h 1.5
853 : edgomez 1.19 if (dec->interlacing) {
854 : syskin 1.49.2.14 if ((cbp || intra) && !mcsel) {
855 : h 1.37 mb->field_dct = BitstreamGetBit(bs);
856 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
857 : h 1.37 }
858 : h 1.5
859 : edgomez 1.19 if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
860 : h 1.5 mb->field_pred = BitstreamGetBit(bs);
861 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
862 : h 1.5
863 : edgomez 1.19 if (mb->field_pred) {
864 : h 1.5 mb->field_for_top = BitstreamGetBit(bs);
865 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
866 : h 1.5 mb->field_for_bot = BitstreamGetBit(bs);
867 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
868 : h 1.5 }
869 :     }
870 :     }
871 : edgomez 1.49.2.13
872 : edgomez 1.47 if (mcsel) {
873 : syskin 1.49.2.17 decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding);
874 : edgomez 1.47 continue;
875 :    
876 :     } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
877 : h 1.5
878 : edgomez 1.19 if (dec->interlacing && mb->field_pred) {
879 : syskin 1.49.2.17 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
880 :     get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound);
881 : edgomez 1.19 } else {
882 : syskin 1.49.2.17 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
883 : edgomez 1.47 mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
884 : h 1.5 }
885 : chl 1.35 } else if (mb->mode == MODE_INTER4V ) {
886 : chenm001 1.26 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
887 :     get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound);
888 :     get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound);
889 :     get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound);
890 : syskin 1.49.2.17 } else { /* MODE_INTRA, MODE_INTRA_Q */
891 :     mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
892 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
893 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
894 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
895 : Isibaar 1.1 continue;
896 :     }
897 :    
898 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, cbp, bs,
899 :     rounding, reduced_resolution, 0);
900 : edgomez 1.47
901 : syskin 1.49.2.17 } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */
902 : edgomez 1.47 mb->mode = MODE_NOT_CODED_GMC;
903 : syskin 1.49.2.17 decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding);
904 : edgomez 1.39
905 : edgomez 1.47 if(dec->out_frm && cp_mb > 0) {
906 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
907 :     cp_mb = 0;
908 : edgomez 1.47 }
909 :     st_mb = x+1;
910 : syskin 1.49.2.17 } else { /* not coded P_VOP macroblock */
911 : chenm001 1.14 mb->mode = MODE_NOT_CODED;
912 : edgomez 1.47
913 : Isibaar 1.1 mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
914 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
915 : edgomez 1.49.2.13
916 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, 0, bs,
917 :     rounding, reduced_resolution, 0);
918 : edgomez 1.47
919 : albeu 1.32 if(dec->out_frm && cp_mb > 0) {
920 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
921 :     cp_mb = 0;
922 : albeu 1.32 }
923 :     st_mb = x+1;
924 : Isibaar 1.1 }
925 :     }
926 : syskin 1.49.2.17
927 : albeu 1.32 if(dec->out_frm && cp_mb > 0)
928 : syskin 1.49.2.17 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
929 : Isibaar 1.1 }
930 :     }
931 :    
932 : edgomez 1.47
933 : edgomez 1.48 /* decode B-frame motion vector */
934 : syskin 1.49.2.17 static void
935 :     get_b_motion_vector(Bitstream * bs,
936 : edgomez 1.47 VECTOR * mv,
937 :     int fcode,
938 :     const VECTOR pmv)
939 : chenm001 1.14 {
940 : syskin 1.49.2.17 const int scale_fac = 1 << (fcode - 1);
941 :     const int high = (32 * scale_fac) - 1;
942 :     const int low = ((-32) * scale_fac);
943 :     const int range = (64 * scale_fac);
944 : edgomez 1.7
945 : syskin 1.49.2.17 int mv_x = get_mv(bs, fcode);
946 :     int mv_y = get_mv(bs, fcode);
947 : Isibaar 1.1
948 : syskin 1.49.2.17 mv_x += pmv.x;
949 :     mv_y += pmv.y;
950 : albeu 1.32
951 : syskin 1.49.2.17 if (mv_x < low)
952 : edgomez 1.47 mv_x += range;
953 : syskin 1.49.2.17 else if (mv_x > high)
954 : edgomez 1.47 mv_x -= range;
955 :    
956 : syskin 1.49.2.17 if (mv_y < low)
957 : edgomez 1.47 mv_y += range;
958 : syskin 1.49.2.17 else if (mv_y > high)
959 : edgomez 1.47 mv_y -= range;
960 :    
961 :     mv->x = mv_x;
962 :     mv->y = mv_y;
963 :     }
964 :    
965 : syskin 1.49.2.16 /* decode an B-frame direct & interpolate macroblock */
966 : syskin 1.49.2.17 static void
967 : edgomez 1.47 decoder_bf_interpolate_mbinter(DECODER * dec,
968 : syskin 1.49.2.17 IMAGE forward,
969 :     IMAGE backward,
970 :     const MACROBLOCK * pMB,
971 :     const uint32_t x_pos,
972 :     const uint32_t y_pos,
973 :     Bitstream * bs,
974 :     const int direct)
975 : edgomez 1.47 {
976 :     uint32_t stride = dec->edged_width;
977 :     uint32_t stride2 = stride / 2;
978 :     int uv_dx, uv_dy;
979 :     int b_uv_dx, b_uv_dy;
980 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
981 : syskin 1.49.2.17 const uint32_t cbp = pMB->cbp;
982 : edgomez 1.47
983 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
984 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
985 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
986 :    
987 : syskin 1.49.2.16 if (!direct) {
988 : edgomez 1.47 uv_dx = pMB->mvs[0].x;
989 :     uv_dy = pMB->mvs[0].y;
990 :    
991 :     b_uv_dx = pMB->b_mvs[0].x;
992 :     b_uv_dy = pMB->b_mvs[0].y;
993 :    
994 : syskin 1.49.2.17 if (dec->quarterpel) {
995 : edgomez 1.47 uv_dx /= 2;
996 :     uv_dy /= 2;
997 :     b_uv_dx /= 2;
998 :     b_uv_dy /= 2;
999 :     }
1000 :    
1001 :     uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
1002 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
1003 :    
1004 :     b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3];
1005 :     b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3];
1006 :    
1007 : syskin 1.49.2.17 } else {
1008 :     if(dec->quarterpel) {
1009 :     uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2);
1010 :     uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2);
1011 :     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);
1012 :     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);
1013 :     } else {
1014 :     uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x;
1015 :     uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y;
1016 :     b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x;
1017 :     b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y;
1018 :     }
1019 : edgomez 1.47
1020 : syskin 1.49.2.17 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
1021 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
1022 :     b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf];
1023 :     b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf];
1024 : edgomez 1.47 }
1025 :    
1026 :     start_timer();
1027 :     if(dec->quarterpel) {
1028 : syskin 1.49.2.17 if(!direct) {
1029 : edgomez 1.47 interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1030 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1031 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1032 :     } else {
1033 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1034 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1035 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1036 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1037 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1038 :     pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1039 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1040 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1041 :     pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1042 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1043 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1044 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1045 : edgomez 1.47 }
1046 : syskin 1.49.2.17 } else {
1047 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos,
1048 : syskin 1.49.2.17 pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1049 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos,
1050 : syskin 1.49.2.17 pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1051 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8,
1052 : syskin 1.49.2.17 pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1053 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8,
1054 : syskin 1.49.2.17 16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1055 : edgomez 1.47 }
1056 :    
1057 :     interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx,
1058 : syskin 1.49.2.17 uv_dy, stride2, 0);
1059 : edgomez 1.47 interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx,
1060 : syskin 1.49.2.17 uv_dy, stride2, 0);
1061 : edgomez 1.47
1062 :    
1063 :     if(dec->quarterpel) {
1064 : syskin 1.49.2.17 if(!direct) {
1065 : edgomez 1.47 interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1066 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1067 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1068 :     } else {
1069 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1070 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1071 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1072 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1073 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1074 :     pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1075 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1076 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1077 :     pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1078 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1079 : syskin 1.49.2.17 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1080 :     pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1081 : edgomez 1.47 }
1082 : syskin 1.49.2.17 } else {
1083 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos,
1084 : syskin 1.49.2.17 pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1085 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1086 : syskin 1.49.2.17 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1087 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos,
1088 : syskin 1.49.2.17 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1089 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1090 : syskin 1.49.2.17 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1091 : edgomez 1.47 }
1092 :    
1093 :     interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos,
1094 : syskin 1.49.2.17 b_uv_dx, b_uv_dy, stride2, 0);
1095 : edgomez 1.47 interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos,
1096 : syskin 1.49.2.17 b_uv_dx, b_uv_dy, stride2, 0);
1097 : edgomez 1.47
1098 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1099 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1100 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos,
1101 :     stride, 1, 8);
1102 :    
1103 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1104 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1105 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1106 :     stride, 1, 8);
1107 :    
1108 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1109 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1110 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1111 :     stride, 1, 8);
1112 :    
1113 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1114 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1115 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1116 :     stride, 1, 8);
1117 :    
1118 :     interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1119 :     dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1120 :     dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos,
1121 :     stride2, 1, 8);
1122 :    
1123 :     interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1124 :     dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1125 :     dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos,
1126 :     stride2, 1, 8);
1127 :    
1128 :     stop_comp_timer();
1129 :    
1130 : syskin 1.49.2.17 if (cbp)
1131 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
1132 : edgomez 1.47 }
1133 :    
1134 : edgomez 1.48 /* for decode B-frame dbquant */
1135 : syskin 1.49.2.17 static __inline int32_t
1136 : edgomez 1.47 get_dbquant(Bitstream * bs)
1137 :     {
1138 : syskin 1.49.2.17 if (!BitstreamGetBit(bs)) /* '0' */
1139 : edgomez 1.47 return (0);
1140 : syskin 1.49.2.17 else if (!BitstreamGetBit(bs)) /* '10' */
1141 : edgomez 1.47 return (-2);
1142 : syskin 1.49.2.17 else /* '11' */
1143 : edgomez 1.48 return (2);
1144 : edgomez 1.47 }
1145 :    
1146 : edgomez 1.48 /*
1147 : syskin 1.49.2.17 * decode B-frame mb_type
1148 :     * bit ret_value
1149 :     * 1 0
1150 :     * 01 1
1151 :     * 001 2
1152 :     * 0001 3
1153 : edgomez 1.48 */
1154 : syskin 1.49.2.17 static int32_t __inline
1155 : edgomez 1.47 get_mbtype(Bitstream * bs)
1156 :     {
1157 :     int32_t mb_type;
1158 :    
1159 : syskin 1.49.2.17 for (mb_type = 0; mb_type <= 3; mb_type++)
1160 : edgomez 1.47 if (BitstreamGetBit(bs))
1161 : syskin 1.49.2.17 return (mb_type);
1162 : edgomez 1.47
1163 : syskin 1.49.2.17 return -1;
1164 : edgomez 1.47 }
1165 :    
1166 : syskin 1.49.2.17 static void
1167 : edgomez 1.47 decoder_bframe(DECODER * dec,
1168 : syskin 1.49.2.17 Bitstream * bs,
1169 :     int quant,
1170 :     int fcode_forward,
1171 :     int fcode_backward)
1172 : edgomez 1.47 {
1173 :     uint32_t x, y;
1174 :     VECTOR mv;
1175 :     const VECTOR zeromv = {0,0};
1176 : syskin 1.49.2.17 const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp;
1177 :     int i;
1178 :    
1179 : edgomez 1.47 start_timer();
1180 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
1181 : syskin 1.49.2.17 dec->width, dec->height);
1182 : edgomez 1.47 image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height,
1183 : syskin 1.49.2.17 dec->width, dec->height);
1184 : edgomez 1.47 stop_edges_timer();
1185 :    
1186 :     for (y = 0; y < dec->mb_height; y++) {
1187 : edgomez 1.48 /* Initialize Pred Motion Vector */
1188 : edgomez 1.47 dec->p_fmv = dec->p_bmv = zeromv;
1189 :     for (x = 0; x < dec->mb_width; x++) {
1190 :     MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x];
1191 :     MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x];
1192 : edgomez 1.49.2.19 const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward;
1193 :     uint32_t intra_dc_threshold; /* fake variable */
1194 :    
1195 :     if (check_resync_marker(bs, fcode_max - 1)) {
1196 :     int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant,
1197 :     &fcode_forward, &fcode_backward, &intra_dc_threshold);
1198 :     x = bound % dec->mb_width;
1199 :     y = bound / dec->mb_width;
1200 :     /* reset predicted macroblocks */
1201 :     dec->p_fmv = dec->p_bmv = zeromv;
1202 :     }
1203 : edgomez 1.47
1204 :     mv =
1205 :     mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] =
1206 :     mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv;
1207 : syskin 1.49.2.17 mb->quant = quant;
1208 : edgomez 1.47
1209 : edgomez 1.48 /*
1210 : edgomez 1.49.2.13 * skip if the co-located P_VOP macroblock is not coded
1211 : edgomez 1.48 * if not codec in co-located S_VOP macroblock is _not_
1212 :     * automatically skipped
1213 :     */
1214 : edgomez 1.47
1215 :     if (last_mb->mode == MODE_NOT_CODED) {
1216 :     mb->cbp = 0;
1217 : syskin 1.49.2.16 mb->mode = MODE_FORWARD;
1218 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1219 : edgomez 1.47 continue;
1220 :     }
1221 :    
1222 : edgomez 1.48 if (!BitstreamGetBit(bs)) { /* modb=='0' */
1223 : edgomez 1.47 const uint8_t modb2 = BitstreamGetBit(bs);
1224 :    
1225 : syskin 1.49.2.16 mb->mode = get_mbtype(bs);
1226 : edgomez 1.47
1227 : syskin 1.49.2.17 if (!modb2) /* modb=='00' */
1228 : edgomez 1.47 mb->cbp = BitstreamGetBits(bs, 6);
1229 : syskin 1.49.2.17 else
1230 : edgomez 1.47 mb->cbp = 0;
1231 : syskin 1.49.2.17
1232 : syskin 1.49.2.16 if (mb->mode && mb->cbp) {
1233 : edgomez 1.47 quant += get_dbquant(bs);
1234 : syskin 1.49.2.17 if (quant > 31)
1235 : edgomez 1.47 quant = 31;
1236 : syskin 1.49.2.17 else if (quant < 1)
1237 : edgomez 1.47 quant = 1;
1238 :     }
1239 : syskin 1.49.2.17 mb->quant = quant;
1240 : syskin 1.49.2.14
1241 :     if (dec->interlacing) {
1242 :     if (mb->cbp) {
1243 :     mb->field_dct = BitstreamGetBit(bs);
1244 :     DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
1245 :     }
1246 :    
1247 : syskin 1.49.2.16 if (mb->mode) {
1248 : syskin 1.49.2.14 mb->field_pred = BitstreamGetBit(bs);
1249 :     DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
1250 :    
1251 :     if (mb->field_pred) {
1252 :     mb->field_for_top = BitstreamGetBit(bs);
1253 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
1254 :     mb->field_for_bot = BitstreamGetBit(bs);
1255 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
1256 :     }
1257 :     }
1258 :     }
1259 :    
1260 : edgomez 1.47 } else {
1261 : syskin 1.49.2.16 mb->mode = MODE_DIRECT_NONE_MV;
1262 : edgomez 1.47 mb->cbp = 0;
1263 :     }
1264 :    
1265 : syskin 1.49.2.16 switch (mb->mode) {
1266 : edgomez 1.47 case MODE_DIRECT:
1267 : syskin 1.49.2.17 get_b_motion_vector(bs, &mv, 1, zeromv);
1268 : edgomez 1.47
1269 :     case MODE_DIRECT_NONE_MV:
1270 : syskin 1.49.2.17 for (i = 0; i < 4; i++) {
1271 :     mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) / TRD + mv.x);
1272 :     mb->b_mvs[i].x = (int32_t) ((mv.x == 0)
1273 :     ? ((TRB - TRD) * last_mb->mvs[i].x) / TRD
1274 :     : mb->mvs[i].x - last_mb->mvs[i].x);
1275 :     mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) / TRD + mv.y);
1276 :     mb->b_mvs[i].y = (int32_t) ((mv.y == 0)
1277 :     ? ((TRB - TRD) * last_mb->mvs[i].y) / TRD
1278 :     : mb->mvs[i].y - last_mb->mvs[i].y);
1279 : edgomez 1.47 }
1280 : syskin 1.49.2.17
1281 : edgomez 1.47 decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1282 : syskin 1.49.2.17 mb, x, y, bs, 1);
1283 : edgomez 1.47 break;
1284 :    
1285 :     case MODE_INTERPOLATE:
1286 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv);
1287 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1288 :    
1289 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv);
1290 :     dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0];
1291 : edgomez 1.47
1292 :     decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1293 : syskin 1.49.2.17 mb, x, y, bs, 0);
1294 : edgomez 1.47 break;
1295 :    
1296 :     case MODE_BACKWARD:
1297 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv);
1298 : edgomez 1.47 dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1299 :    
1300 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0);
1301 : edgomez 1.47 break;
1302 :    
1303 :     case MODE_FORWARD:
1304 : syskin 1.49.2.17 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv);
1305 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1306 :    
1307 : syskin 1.49.2.17 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1308 : edgomez 1.47 break;
1309 :    
1310 :     default:
1311 : syskin 1.49.2.16 DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode);
1312 : edgomez 1.47 }
1313 : edgomez 1.48 } /* End of for */
1314 :     }
1315 : edgomez 1.47 }
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 : Isibaar 1.49.2.28 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats,
1320 :     int coding_type, int quant)
1321 : edgomez 1.47 {
1322 : Isibaar 1.49.2.27 if (dec->cartoon_mode)
1323 :     frame->general &= ~XVID_FILMEFFECT;
1324 :    
1325 :     if (frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) && mbs != NULL) /* post process */
1326 : Isibaar 1.49.2.22 {
1327 :     /* note: image is stored to tmp */
1328 :     image_copy(&dec->tmp, img, dec->edged_width, dec->height);
1329 : Isibaar 1.49.2.28 image_postproc(&dec->postproc, &dec->tmp, dec->edged_width,
1330 : Isibaar 1.49.2.26 mbs, dec->mb_width, dec->mb_height, dec->mb_width,
1331 : Isibaar 1.49.2.28 frame->general, dec->frames, (coding_type == B_VOP));
1332 : Isibaar 1.49.2.22 img = &dec->tmp;
1333 :     }
1334 :    
1335 : edgomez 1.47 image_output(img, dec->width, dec->height,
1336 : suxen_drol 1.49.2.1 dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride,
1337 :     frame->output.csp, dec->interlacing);
1338 :    
1339 : syskin 1.49.2.17 if (stats) {
1340 : suxen_drol 1.49.2.1 stats->type = coding2type(coding_type);
1341 :     stats->data.vop.time_base = (int)dec->time_base;
1342 : edgomez 1.49.2.6 stats->data.vop.time_increment = 0; /* XXX: todo */
1343 : suxen_drol 1.49.2.1 }
1344 : edgomez 1.47 }
1345 :    
1346 :    
1347 :     int
1348 :     decoder_decode(DECODER * dec,
1349 : syskin 1.49.2.17 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats)
1350 : edgomez 1.47 {
1351 :    
1352 :     Bitstream bs;
1353 :     uint32_t rounding;
1354 :     uint32_t reduced_resolution;
1355 :     uint32_t quant;
1356 :     uint32_t fcode_forward;
1357 :     uint32_t fcode_backward;
1358 :     uint32_t intra_dc_threshold;
1359 :     WARPPOINTS gmc_warp;
1360 : suxen_drol 1.49.2.1 int coding_type;
1361 :     int success, output, seen_something;
1362 : edgomez 1.47
1363 : edgomez 1.49.2.10 if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */
1364 : suxen_drol 1.49.2.1 return XVID_ERR_VERSION;
1365 : edgomez 1.47
1366 : suxen_drol 1.49.2.1 start_global_timer();
1367 : edgomez 1.47
1368 : suxen_drol 1.49.2.1 dec->low_delay_default = (frame->general & XVID_LOWDELAY);
1369 :     if ((frame->general & XVID_DISCONTINUITY))
1370 : edgomez 1.47 dec->frames = 0;
1371 : suxen_drol 1.49.2.1 dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL;
1372 : edgomez 1.47
1373 : syskin 1.49.2.17 if (frame->length < 0) { /* decoder flush */
1374 :     int ret;
1375 :     /* if not decoding "low_delay/packed", and this isn't low_delay and
1376 :     we have a reference frame, then outout the reference frame */
1377 : suxen_drol 1.49.2.3 if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) {
1378 : Isibaar 1.49.2.28 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1379 : syskin 1.49.2.17 dec->frames = 0;
1380 :     ret = 0;
1381 :     } else {
1382 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1383 :     ret = XVID_ERR_END;
1384 :     }
1385 : edgomez 1.47
1386 :     emms();
1387 :     stop_global_timer();
1388 : suxen_drol 1.49.2.3 return ret;
1389 : edgomez 1.47 }
1390 : edgomez 1.19
1391 : Isibaar 1.1 BitstreamInit(&bs, frame->bitstream, frame->length);
1392 :    
1393 : edgomez 1.48 /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */
1394 : edgomez 1.47 if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f)
1395 :     {
1396 :     image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width,
1397 : suxen_drol 1.49.2.1 (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing);
1398 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1399 : edgomez 1.47 emms();
1400 : syskin 1.49.2.17 return 1; /* one byte consumed */
1401 : edgomez 1.47 }
1402 :    
1403 : suxen_drol 1.49.2.1 success = 0;
1404 :     output = 0;
1405 :     seen_something = 0;
1406 :    
1407 : edgomez 1.47 repeat:
1408 :    
1409 : syskin 1.49.2.17 coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution,
1410 : edgomez 1.47 &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp);
1411 :    
1412 : edgomez 1.49.2.13 DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n",
1413 : suxen_drol 1.49.2.1 coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp);
1414 : Isibaar 1.1
1415 : syskin 1.49.2.17 if (coding_type == -1) { /* nothing */
1416 : edgomez 1.47 if (success) goto done;
1417 : syskin 1.49.2.17 if (stats) stats->type = XVID_TYPE_NOTHING;
1418 : edgomez 1.47 emms();
1419 : syskin 1.49.2.17 return BitstreamPos(&bs)/8;
1420 : Isibaar 1.1 }
1421 :    
1422 : syskin 1.49.2.17 if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */
1423 :    
1424 : suxen_drol 1.49.2.1 if (coding_type == -3)
1425 : edgomez 1.47 decoder_resize(dec);
1426 : edgomez 1.49.2.13
1427 : syskin 1.49.2.17 if (stats) {
1428 : suxen_drol 1.49.2.1 stats->type = XVID_TYPE_VOL;
1429 : edgomez 1.47 stats->data.vol.general = 0;
1430 : suxen_drol 1.49.2.1 /*XXX: if (dec->interlacing)
1431 :     stats->data.vol.general |= ++INTERLACING; */
1432 : edgomez 1.47 stats->data.vol.width = dec->width;
1433 :     stats->data.vol.height = dec->height;
1434 : suxen_drol 1.49.2.1 stats->data.vol.par = dec->aspect_ratio;
1435 : edgomez 1.47 stats->data.vol.par_width = dec->par_width;
1436 :     stats->data.vol.par_height = dec->par_height;
1437 :     emms();
1438 : suxen_drol 1.49.2.1 return BitstreamPos(&bs)/8; /* number of bytes consumed */
1439 : edgomez 1.47 }
1440 :     goto repeat;
1441 : edgomez 1.49.2.13 }
1442 : edgomez 1.47
1443 : 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 */
1444 : edgomez 1.47
1445 :     /* packed_mode: special-N_VOP treament */
1446 : syskin 1.49.2.17 if (dec->packed_mode && coding_type == N_VOP) {
1447 :     if (dec->low_delay_default && dec->frames > 0) {
1448 : Isibaar 1.49.2.28 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1449 : edgomez 1.47 output = 1;
1450 :     }
1451 :     /* ignore otherwise */
1452 : syskin 1.49.2.17 } else if (coding_type != B_VOP) {
1453 :     switch(coding_type) {
1454 : edgomez 1.47 case I_VOP :
1455 :     decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold);
1456 :     break;
1457 :     case P_VOP :
1458 : edgomez 1.49.2.13 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1459 : edgomez 1.47 fcode_forward, intra_dc_threshold, NULL);
1460 :     break;
1461 :     case S_VOP :
1462 : edgomez 1.49.2.13 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1463 : edgomez 1.47 fcode_forward, intra_dc_threshold, &gmc_warp);
1464 :     break;
1465 :     case N_VOP :
1466 : edgomez 1.49.2.6 /* XXX: not_coded vops are not used for forward prediction */
1467 :     /* we should not swap(last_mbs,mbs) */
1468 : edgomez 1.47 image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height);
1469 : syskin 1.49.2.23 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */
1470 : edgomez 1.47 break;
1471 :     }
1472 :    
1473 : syskin 1.49.2.17 if (reduced_resolution) {
1474 : edgomez 1.47 image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs,
1475 :     (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width,
1476 : suxen_drol 1.49.2.1 16, 0);
1477 : edgomez 1.47 }
1478 : Isibaar 1.1
1479 : edgomez 1.47 /* note: for packed_mode, output is performed when the special-N_VOP is decoded */
1480 : syskin 1.49.2.17 if (!(dec->low_delay_default && dec->packed_mode)) {
1481 :     if (dec->low_delay) {
1482 : Isibaar 1.49.2.28 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1483 : edgomez 1.47 output = 1;
1484 : syskin 1.49.2.17 } else if (dec->frames > 0) { /* is the reference frame valid? */
1485 : edgomez 1.47 /* output the reference frame */
1486 : Isibaar 1.49.2.28 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1487 : edgomez 1.47 output = 1;
1488 :     }
1489 :     }
1490 : Isibaar 1.18
1491 : chenm001 1.14 image_swap(&dec->refn[0], &dec->refn[1]);
1492 :     image_swap(&dec->cur, &dec->refn[0]);
1493 : syskin 1.49.2.17 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs);
1494 : edgomez 1.47 dec->last_reduced_resolution = reduced_resolution;
1495 : syskin 1.49.2.17 dec->last_coding_type = coding_type;
1496 : edgomez 1.47
1497 :     dec->frames++;
1498 :     seen_something = 1;
1499 : chenm001 1.31
1500 : syskin 1.49.2.17 } else { /* B_VOP */
1501 : edgomez 1.47
1502 : syskin 1.49.2.17 if (dec->low_delay) {
1503 : edgomez 1.49.2.5 DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n");
1504 : edgomez 1.47 dec->low_delay = 1;
1505 :     }
1506 :    
1507 : syskin 1.49.2.17 if (dec->frames < 2) {
1508 : edgomez 1.47 /* attemping to decode a bvop without atleast 2 reference frames */
1509 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1510 :     "broken b-frame, mising ref frames");
1511 : syskin 1.49.2.21 stats->type = XVID_TYPE_NOTHING;
1512 : syskin 1.49.2.17 } else if (dec->time_pp <= dec->time_bp) {
1513 : edgomez 1.49.2.13 /* this occurs when dx50_bvop_compatibility==0 sequences are
1514 : edgomez 1.47 decoded in vfw. */
1515 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1516 :     "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp);
1517 : syskin 1.49.2.21 stats->type = XVID_TYPE_NOTHING;
1518 : syskin 1.49.2.17 } else {
1519 : edgomez 1.47 decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward);
1520 : Isibaar 1.49.2.28 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1521 : edgomez 1.47 }
1522 :    
1523 :     output = 1;
1524 :     dec->frames++;
1525 : chenm001 1.14 }
1526 :    
1527 : edgomez 1.47 BitstreamByteAlign(&bs);
1528 :    
1529 :     /* low_delay_default mode: repeat in packed_mode */
1530 : syskin 1.49.2.17 if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) {
1531 : edgomez 1.47 success = 1;
1532 :     goto repeat;
1533 :     }
1534 :    
1535 :     done :
1536 :    
1537 :     /* low_delay_default mode: if we've gotten here without outputting anything,
1538 :     then output the recently decoded frame, or print an error message */
1539 : syskin 1.49.2.17 if (dec->low_delay_default && output == 0) {
1540 :     if (dec->packed_mode && seen_something) {
1541 : edgomez 1.47 /* output the recently decoded frame */
1542 : Isibaar 1.49.2.28 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1543 : syskin 1.49.2.17 } else {
1544 : edgomez 1.47 image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128);
1545 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1546 :     "warning: nothing to output");
1547 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64,
1548 :     "bframe decoder lag");
1549 :    
1550 : Isibaar 1.49.2.28 decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP, quant);
1551 : suxen_drol 1.49.2.1 if (stats) stats->type = XVID_TYPE_NOTHING;
1552 : edgomez 1.47 }
1553 :     }
1554 :    
1555 : Isibaar 1.1 emms();
1556 :     stop_global_timer();
1557 :    
1558 : suxen_drol 1.49.2.1 return BitstreamPos(&bs) / 8; /* number of bytes consumed */
1559 : Isibaar 1.1 }
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