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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 1.51 * Copyright(C) 2002 MinChen <chenm001@163.com>
7 : suxen_drol 1.52 * 2002-2004 Peter Ross <pross@xvid.org>
8 : edgomez 1.42 *
9 : edgomez 1.51 * 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 1.51 * 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 1.51 * 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 1.51 * 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 1.61 * $Id$
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 1.51 #include "quant/quant.h"
44 :     #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 : edgomez 1.62 #include "image/qpel.h"
52 : Isibaar 1.1
53 :     #include "bitstream/mbcoding.h"
54 :     #include "prediction/mbprediction.h"
55 :     #include "utils/timer.h"
56 :     #include "utils/emms.h"
57 : edgomez 1.47 #include "motion/motion.h"
58 : edgomez 1.51 #include "motion/gmc.h"
59 : Isibaar 1.1
60 :     #include "image/image.h"
61 :     #include "image/colorspace.h"
62 : edgomez 1.51 #include "image/postprocessing.h"
63 : Isibaar 1.3 #include "utils/mem_align.h"
64 : Isibaar 1.1
65 : edgomez 1.51 static int
66 : edgomez 1.47 decoder_resize(DECODER * dec)
67 : Isibaar 1.1 {
68 : edgomez 1.47 /* free existing */
69 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
70 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
71 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
72 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
73 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
74 :    
75 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
76 : Isibaar 1.1
77 : edgomez 1.51 if (dec->last_mbs)
78 : edgomez 1.47 xvid_free(dec->last_mbs);
79 :     if (dec->mbs)
80 :     xvid_free(dec->mbs);
81 : edgomez 1.51 if (dec->qscale)
82 :     xvid_free(dec->qscale);
83 : Isibaar 1.1
84 : edgomez 1.47 /* realloc */
85 : Isibaar 1.1 dec->mb_width = (dec->width + 15) / 16;
86 :     dec->mb_height = (dec->height + 15) / 16;
87 :    
88 :     dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE;
89 :     dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE;
90 : edgomez 1.19
91 :     if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) {
92 : Isibaar 1.3 xvid_free(dec);
93 : Isibaar 1.1 return XVID_ERR_MEMORY;
94 :     }
95 :    
96 : edgomez 1.19 if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) {
97 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
98 : Isibaar 1.3 xvid_free(dec);
99 : Isibaar 1.1 return XVID_ERR_MEMORY;
100 :     }
101 : edgomez 1.47
102 : edgomez 1.48 /* Support B-frame to reference last 2 frame */
103 : edgomez 1.19 if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) {
104 : chenm001 1.11 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
105 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
106 :     xvid_free(dec);
107 :     return XVID_ERR_MEMORY;
108 :     }
109 : edgomez 1.47 if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) {
110 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
111 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
112 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
113 :     xvid_free(dec);
114 :     return XVID_ERR_MEMORY;
115 :     }
116 :    
117 :     if (image_create(&dec->qtmp, dec->edged_width, dec->edged_height)) {
118 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
119 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
120 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
121 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
122 :     xvid_free(dec);
123 :     return XVID_ERR_MEMORY;
124 :     }
125 :    
126 :     if (image_create(&dec->gmc, dec->edged_width, dec->edged_height)) {
127 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
128 : chenm001 1.14 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
129 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
130 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
131 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
132 : chenm001 1.14 xvid_free(dec);
133 :     return XVID_ERR_MEMORY;
134 :     }
135 : Isibaar 1.1
136 : edgomez 1.19 dec->mbs =
137 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
138 :     CACHE_LINE);
139 :     if (dec->mbs == NULL) {
140 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
141 : chenm001 1.14 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
142 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
143 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
144 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
145 : chenm001 1.14 xvid_free(dec);
146 :     return XVID_ERR_MEMORY;
147 :     }
148 : Isibaar 1.20 memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
149 :    
150 : edgomez 1.48 /* For skip MB flag */
151 : edgomez 1.19 dec->last_mbs =
152 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
153 :     CACHE_LINE);
154 :     if (dec->last_mbs == NULL) {
155 : chenm001 1.14 xvid_free(dec->mbs);
156 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
157 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
158 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
159 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
160 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
161 : Isibaar 1.3 xvid_free(dec);
162 : Isibaar 1.1 return XVID_ERR_MEMORY;
163 :     }
164 : Isibaar 1.20
165 :     memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
166 : Isibaar 1.1
167 : edgomez 1.51 /* nothing happens if that fails */
168 :     dec->qscale =
169 :     xvid_malloc(sizeof(int) * dec->mb_width * dec->mb_height, CACHE_LINE);
170 :    
171 :     if (dec->qscale)
172 :     memset(dec->qscale, 0, sizeof(int) * dec->mb_width * dec->mb_height);
173 :    
174 :     return 0;
175 : edgomez 1.47 }
176 :    
177 :    
178 :     int
179 : edgomez 1.51 decoder_create(xvid_dec_create_t * create)
180 : edgomez 1.47 {
181 :     DECODER *dec;
182 :    
183 : edgomez 1.51 if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */
184 :     return XVID_ERR_VERSION;
185 :    
186 : edgomez 1.47 dec = xvid_malloc(sizeof(DECODER), CACHE_LINE);
187 :     if (dec == NULL) {
188 :     return XVID_ERR_MEMORY;
189 :     }
190 : edgomez 1.51
191 : edgomez 1.47 memset(dec, 0, sizeof(DECODER));
192 :    
193 : edgomez 1.51 dec->mpeg_quant_matrices = xvid_malloc(sizeof(uint16_t) * 64 * 8, CACHE_LINE);
194 :     if (dec->mpeg_quant_matrices == NULL) {
195 :     xvid_free(dec);
196 :     return XVID_ERR_MEMORY;
197 :     }
198 :    
199 :     create->handle = dec;
200 : edgomez 1.47
201 : edgomez 1.51 dec->width = create->width;
202 :     dec->height = create->height;
203 : edgomez 1.47
204 :     image_null(&dec->cur);
205 :     image_null(&dec->refn[0]);
206 :     image_null(&dec->refn[1]);
207 :     image_null(&dec->tmp);
208 :     image_null(&dec->qtmp);
209 :    
210 : edgomez 1.48 /* image based GMC */
211 : edgomez 1.47 image_null(&dec->gmc);
212 :    
213 :     dec->mbs = NULL;
214 :     dec->last_mbs = NULL;
215 : edgomez 1.51 dec->qscale = NULL;
216 : edgomez 1.47
217 : Isibaar 1.1 init_timer();
218 : edgomez 1.51 init_postproc(&dec->postproc);
219 :     init_mpeg_matrix(dec->mpeg_quant_matrices);
220 : Isibaar 1.1
221 : edgomez 1.48 /* For B-frame support (used to save reference frame's time */
222 : edgomez 1.47 dec->frames = 0;
223 : chenm001 1.14 dec->time = dec->time_base = dec->last_time_base = 0;
224 : edgomez 1.47 dec->low_delay = 0;
225 :     dec->packed_mode = 0;
226 : syskin 1.56 dec->time_inc_resolution = 1; /* until VOL header says otherwise */
227 : edgomez 1.47
228 :     dec->fixed_dimensions = (dec->width > 0 && dec->height > 0);
229 : edgomez 1.19
230 : edgomez 1.47 if (dec->fixed_dimensions)
231 :     return decoder_resize(dec);
232 :     else
233 : edgomez 1.51 return 0;
234 : Isibaar 1.1 }
235 :    
236 :    
237 : edgomez 1.19 int
238 :     decoder_destroy(DECODER * dec)
239 : Isibaar 1.1 {
240 : chenm001 1.14 xvid_free(dec->last_mbs);
241 : Isibaar 1.3 xvid_free(dec->mbs);
242 : edgomez 1.51 xvid_free(dec->qscale);
243 : edgomez 1.47
244 : edgomez 1.48 /* image based GMC */
245 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
246 : edgomez 1.47
247 : chenm001 1.11 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
248 : chenm001 1.14 image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
249 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
250 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
251 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
252 : edgomez 1.51 xvid_free(dec->mpeg_quant_matrices);
253 : Isibaar 1.3 xvid_free(dec);
254 : Isibaar 1.1
255 :     write_timer();
256 : edgomez 1.51 return 0;
257 : Isibaar 1.1 }
258 :    
259 : edgomez 1.19 static const int32_t dquant_table[4] = {
260 : Isibaar 1.1 -1, -2, 1, 2
261 :     };
262 :    
263 : edgomez 1.48 /* decode an intra macroblock */
264 : edgomez 1.51 static void
265 : edgomez 1.19 decoder_mbintra(DECODER * dec,
266 :     MACROBLOCK * pMB,
267 :     const uint32_t x_pos,
268 :     const uint32_t y_pos,
269 :     const uint32_t acpred_flag,
270 :     const uint32_t cbp,
271 :     Bitstream * bs,
272 :     const uint32_t quant,
273 : chenm001 1.26 const uint32_t intra_dc_threshold,
274 : edgomez 1.47 const unsigned int bound,
275 :     const int reduced_resolution)
276 : Isibaar 1.1 {
277 : edgomez 1.7
278 :     DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE);
279 : edgomez 1.19 DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
280 : edgomez 1.7
281 : h 1.8 uint32_t stride = dec->edged_width;
282 :     uint32_t stride2 = stride / 2;
283 :     uint32_t next_block = stride * 8;
284 : h 1.5 uint32_t i;
285 :     uint32_t iQuant = pMB->quant;
286 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
287 :    
288 : edgomez 1.47 if (reduced_resolution) {
289 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
290 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
291 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
292 :     }else{
293 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
294 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
295 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
296 :     }
297 : edgomez 1.7
298 : edgomez 1.48 memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */
299 : h 1.5
300 : edgomez 1.19 for (i = 0; i < 6; i++) {
301 : h 1.5 uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4);
302 : Isibaar 1.1 int16_t predictors[8];
303 :     int start_coeff;
304 :    
305 :     start_timer();
306 : edgomez 1.19 predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64],
307 : edgomez 1.59 iQuant, iDcScaler, predictors, bound);
308 : edgomez 1.19 if (!acpred_flag) {
309 : h 1.5 pMB->acpred_directions[i] = 0;
310 : Isibaar 1.1 }
311 :     stop_prediction_timer();
312 :    
313 : edgomez 1.19 if (quant < intra_dc_threshold) {
314 : Isibaar 1.1 int dc_size;
315 :     int dc_dif;
316 :    
317 : edgomez 1.19 dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs);
318 :     dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0;
319 : Isibaar 1.1
320 : edgomez 1.19 if (dc_size > 8) {
321 : edgomez 1.48 BitstreamSkip(bs, 1); /* marker */
322 : Isibaar 1.1 }
323 : edgomez 1.19
324 :     block[i * 64 + 0] = dc_dif;
325 : Isibaar 1.1 start_coeff = 1;
326 : chenm001 1.26
327 : edgomez 1.51 DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif);
328 : edgomez 1.19 } else {
329 : Isibaar 1.1 start_coeff = 0;
330 :     }
331 :    
332 :     start_timer();
333 : edgomez 1.48 if (cbp & (1 << (5 - i))) /* coded */
334 : Isibaar 1.1 {
335 : edgomez 1.47 int direction = dec->alternate_vertical_scan ?
336 :     2 : pMB->acpred_directions[i];
337 :    
338 :     get_intra_block(bs, &block[i * 64], direction, start_coeff);
339 : Isibaar 1.1 }
340 :     stop_coding_timer();
341 :    
342 :     start_timer();
343 : edgomez 1.59 add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors, dec->bs_version);
344 : Isibaar 1.1 stop_prediction_timer();
345 :    
346 :     start_timer();
347 : edgomez 1.19 if (dec->quant_type == 0) {
348 : edgomez 1.51 dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
349 : edgomez 1.19 } else {
350 : edgomez 1.51 dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
351 : Isibaar 1.1 }
352 :     stop_iquant_timer();
353 :    
354 :     start_timer();
355 : edgomez 1.19 idct(&data[i * 64]);
356 : Isibaar 1.1 stop_idct_timer();
357 : edgomez 1.47
358 : h 1.5 }
359 : Isibaar 1.1
360 : edgomez 1.19 if (dec->interlacing && pMB->field_dct) {
361 : h 1.8 next_block = stride;
362 :     stride *= 2;
363 : Isibaar 1.1 }
364 : h 1.5
365 :     start_timer();
366 : edgomez 1.47
367 :     if (reduced_resolution)
368 :     {
369 :     next_block*=2;
370 :     copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
371 :     copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
372 :     copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
373 :     copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
374 :     copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
375 :     copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
376 :     }else{
377 :     transfer_16to8copy(pY_Cur, &data[0 * 64], stride);
378 :     transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride);
379 :     transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride);
380 :     transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride);
381 :     transfer_16to8copy(pU_Cur, &data[4 * 64], stride2);
382 :     transfer_16to8copy(pV_Cur, &data[5 * 64], stride2);
383 :     }
384 : h 1.5 stop_transfer_timer();
385 : Isibaar 1.1 }
386 :    
387 : edgomez 1.51 static void
388 :     decoder_mb_decode(DECODER * dec,
389 :     const uint32_t cbp,
390 :     Bitstream * bs,
391 :     uint8_t * pY_Cur,
392 :     uint8_t * pU_Cur,
393 :     uint8_t * pV_Cur,
394 : edgomez 1.64 int reduced_resolution,
395 : edgomez 1.51 const MACROBLOCK * pMB)
396 :     {
397 : edgomez 1.64 DECLARE_ALIGNED_MATRIX(data, 1, 64, int16_t, CACHE_LINE);
398 : edgomez 1.51
399 :     int stride = dec->edged_width;
400 :     int next_block = stride * (reduced_resolution ? 16 : 8);
401 :     int i;
402 :     const uint32_t iQuant = pMB->quant;
403 :     const int direction = dec->alternate_vertical_scan ? 2 : 0;
404 : edgomez 1.61 typedef void (*get_inter_block_function_t)(
405 :     Bitstream * bs,
406 :     int16_t * block,
407 :     int direction,
408 :     const int quant,
409 :     const uint16_t *matrix);
410 : edgomez 1.64 typedef void (*add_residual_function_t)(
411 :     uint8_t *predicted_block,
412 :     const int16_t *residual,
413 :     int stride);
414 : edgomez 1.61
415 :     const get_inter_block_function_t get_inter_block = (dec->quant_type == 0)
416 : edgomez 1.64 ? (get_inter_block_function_t)get_inter_block_h263
417 :     : (get_inter_block_function_t)get_inter_block_mpeg;
418 :    
419 :     const add_residual_function_t add_residual = (reduced_resolution)
420 :     ? (add_residual_function_t)add_upsampled_8x8_16to8
421 :     : (add_residual_function_t)transfer_16to8add;
422 :    
423 :     uint8_t *dst[6];
424 :     int strides[6];
425 : edgomez 1.61
426 : edgomez 1.51
427 : edgomez 1.64 if (dec->interlacing && pMB->field_dct) {
428 :     next_block = stride;
429 :     stride *= 2;
430 :     }
431 :    
432 :     reduced_resolution = !!reduced_resolution;
433 :     dst[0] = pY_Cur;
434 :     dst[2] = pY_Cur + next_block;
435 :     dst[1] = dst[0] + (8<<reduced_resolution);
436 :     dst[3] = dst[2] + (8<<reduced_resolution);
437 :     dst[4] = pU_Cur;
438 :     dst[5] = pV_Cur;
439 :     strides[0] = strides[1] = strides[2] = strides[3] = stride;
440 :     strides[4] = stride/2;
441 :     strides[5] = stride/2;
442 :    
443 : edgomez 1.51 for (i = 0; i < 6; i++) {
444 : edgomez 1.64 /* Process only coded blocks */
445 :     if (cbp & (1 << (5 - i))) {
446 : edgomez 1.51
447 : edgomez 1.64 /* Clear the block */
448 :     memset(&data[0], 0, 64*sizeof(int16_t));
449 : edgomez 1.51
450 : edgomez 1.61 /* Decode coeffs and dequantize on the fly */
451 : edgomez 1.51 start_timer();
452 : edgomez 1.64 get_inter_block(bs, &data[0], direction, iQuant, get_inter_matrix(dec->mpeg_quant_matrices));
453 : edgomez 1.51 stop_coding_timer();
454 :    
455 : edgomez 1.64 /* iDCT */
456 : edgomez 1.51 start_timer();
457 : edgomez 1.64 idct(&data[0]);
458 : edgomez 1.51 stop_idct_timer();
459 : edgomez 1.64
460 :     /* Add this residual to the predicted block */
461 :     start_timer();
462 :     add_residual(dst[i], &data[0], strides[i]);
463 :     stop_transfer_timer();
464 : edgomez 1.51 }
465 :     }
466 :     }
467 : Isibaar 1.1
468 : edgomez 1.48 /* decode an inter macroblock */
469 : edgomez 1.51 static void
470 : edgomez 1.19 decoder_mbinter(DECODER * dec,
471 :     const MACROBLOCK * pMB,
472 :     const uint32_t x_pos,
473 :     const uint32_t y_pos,
474 :     const uint32_t cbp,
475 :     Bitstream * bs,
476 : edgomez 1.47 const uint32_t rounding,
477 : edgomez 1.51 const int reduced_resolution,
478 :     const int ref)
479 : Isibaar 1.1 {
480 : h 1.8 uint32_t stride = dec->edged_width;
481 :     uint32_t stride2 = stride / 2;
482 : edgomez 1.7 uint32_t i;
483 : edgomez 1.51
484 : h 1.5 uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
485 : edgomez 1.47
486 : Isibaar 1.1 int uv_dx, uv_dy;
487 : edgomez 1.47 VECTOR mv[4]; /* local copy of mvs */
488 :    
489 :     if (reduced_resolution) {
490 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
491 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
492 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
493 :     for (i = 0; i < 4; i++) {
494 :     mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x);
495 :     mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y);
496 :     }
497 :     } else {
498 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
499 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
500 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
501 :     for (i = 0; i < 4; i++)
502 :     mv[i] = pMB->mvs[i];
503 :     }
504 :    
505 : syskin 1.54 for (i = 0; i < 4; i++) {
506 :     /* clip to valid range */
507 :     int border = (int)(dec->mb_width - x_pos) << (5 + dec->quarterpel);
508 :     if (mv[i].x > border) {
509 :     DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
510 :     mv[i].x = border;
511 :     } else {
512 :     border = (-(int)x_pos-1) << (5 + dec->quarterpel);
513 :     if (mv[i].x < border) {
514 :     DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
515 :     mv[i].x = border;
516 :     }
517 :     }
518 :    
519 :     border = (int)(dec->mb_height - y_pos) << (5 + dec->quarterpel);
520 :     if (mv[i].y > border) {
521 :     DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
522 :     mv[i].y = border;
523 :     } else {
524 :     border = (-(int)y_pos-1) << (5 + dec->quarterpel);
525 :     if (mv[i].y < border) {
526 :     DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
527 :     mv[i].y = border;
528 :     }
529 :     }
530 :     }
531 :    
532 : edgomez 1.51 start_timer();
533 :    
534 :     if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */
535 :    
536 :     uv_dx = mv[0].x;
537 :     uv_dy = mv[0].y;
538 :     if (dec->quarterpel) {
539 :     uv_dx /= 2;
540 :     uv_dy /= 2;
541 :     }
542 : edgomez 1.47 uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
543 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
544 :    
545 :     if (reduced_resolution)
546 :     interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
547 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
548 :     else if (dec->quarterpel)
549 :     interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64,
550 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
551 :     mv[0].x, mv[0].y, stride, rounding);
552 : edgomez 1.47 else
553 : edgomez 1.51 interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos,
554 :     mv[0].x, mv[0].y, stride, rounding);
555 : Isibaar 1.1
556 : edgomez 1.47 } else { /* MODE_INTER4V */
557 :    
558 : edgomez 1.51 if(dec->quarterpel) {
559 :     uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2);
560 :     uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2);
561 :     } else {
562 :     uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x;
563 :     uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y;
564 :     }
565 : edgomez 1.47
566 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
567 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
568 : edgomez 1.47
569 : edgomez 1.51 if (reduced_resolution) {
570 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
571 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
572 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos,
573 : edgomez 1.51 mv[1].x, mv[1].y, stride, rounding);
574 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos, 32*y_pos + 16,
575 : edgomez 1.51 mv[2].x, mv[2].y, stride, rounding);
576 :     interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos + 16,
577 :     mv[3].x, mv[3].y, stride, rounding);
578 : edgomez 1.47 interpolate16x16_switch(dec->cur.u, dec->refn[0].u , 16 * x_pos, 16 * y_pos,
579 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
580 : edgomez 1.47 interpolate16x16_switch(dec->cur.v, dec->refn[0].v , 16 * x_pos, 16 * y_pos,
581 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
582 : edgomez 1.47
583 : edgomez 1.51 } else if (dec->quarterpel) {
584 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
585 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
586 :     mv[0].x, mv[0].y, stride, rounding);
587 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
588 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
589 :     mv[1].x, mv[1].y, stride, rounding);
590 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
591 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
592 :     mv[2].x, mv[2].y, stride, rounding);
593 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
594 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
595 :     mv[3].x, mv[3].y, stride, rounding);
596 :     } else {
597 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos,
598 :     mv[0].x, mv[0].y, stride, rounding);
599 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos,
600 :     mv[1].x, mv[1].y, stride, rounding);
601 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8,
602 :     mv[2].x, mv[2].y, stride, rounding);
603 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8,
604 :     mv[3].x, mv[3].y, stride, rounding);
605 : edgomez 1.47 }
606 :     }
607 :    
608 : edgomez 1.51 /* chroma */
609 :     if (reduced_resolution) {
610 :     interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos,
611 :     uv_dx, uv_dy, stride2, rounding);
612 :     interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos,
613 :     uv_dx, uv_dy, stride2, rounding);
614 :     } else {
615 :     interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos,
616 :     uv_dx, uv_dy, stride2, rounding);
617 :     interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos,
618 :     uv_dx, uv_dy, stride2, rounding);
619 : edgomez 1.47 }
620 : Isibaar 1.1
621 : edgomez 1.51 stop_comp_timer();
622 : edgomez 1.47
623 : edgomez 1.51 if (cbp)
624 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur,
625 :     reduced_resolution, pMB);
626 : edgomez 1.47 }
627 :    
628 :     static void
629 :     decoder_mbgmc(DECODER * dec,
630 :     MACROBLOCK * const pMB,
631 :     const uint32_t x_pos,
632 :     const uint32_t y_pos,
633 :     const uint32_t fcode,
634 :     const uint32_t cbp,
635 :     Bitstream * bs,
636 : edgomez 1.51 const uint32_t rounding)
637 : edgomez 1.47 {
638 :     const uint32_t stride = dec->edged_width;
639 :     const uint32_t stride2 = stride / 2;
640 : edgomez 1.51
641 : edgomez 1.47 uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
642 :     uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
643 :     uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
644 :    
645 : edgomez 1.51 NEW_GMC_DATA * gmc_data = &dec->new_gmc_data;
646 :    
647 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
648 : Isibaar 1.1
649 :     start_timer();
650 : edgomez 1.51
651 : edgomez 1.47 /* this is where the calculations are done */
652 :    
653 : edgomez 1.51 gmc_data->predict_16x16(gmc_data,
654 :     dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y,
655 :     stride, stride, x_pos, y_pos, rounding);
656 :    
657 :     gmc_data->predict_8x8(gmc_data,
658 :     dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u,
659 :     dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v,
660 :     stride2, stride2, x_pos, y_pos, rounding);
661 : edgomez 1.47
662 : edgomez 1.51 gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel);
663 : Isibaar 1.1
664 : edgomez 1.51 pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode);
665 :     pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode);
666 : edgomez 1.47
667 : edgomez 1.51 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
668 : Isibaar 1.1
669 : edgomez 1.51 stop_transfer_timer();
670 : Isibaar 1.1
671 : edgomez 1.51 if (cbp)
672 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
673 : Isibaar 1.1
674 :     }
675 :    
676 :    
677 : edgomez 1.51 static void
678 : edgomez 1.19 decoder_iframe(DECODER * dec,
679 : edgomez 1.51 Bitstream * bs,
680 :     int reduced_resolution,
681 :     int quant,
682 :     int intra_dc_threshold)
683 : Isibaar 1.1 {
684 : chenm001 1.26 uint32_t bound;
685 :     uint32_t x, y;
686 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
687 :     uint32_t mb_height = dec->mb_height;
688 : edgomez 1.51
689 :     if (reduced_resolution) {
690 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
691 :     mb_height = (dec->height + 31) / 32;
692 :     }
693 : chenm001 1.25
694 : chenm001 1.26 bound = 0;
695 : edgomez 1.7
696 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
697 :     for (x = 0; x < mb_width; x++) {
698 : chenm001 1.26 MACROBLOCK *mb;
699 : Isibaar 1.1 uint32_t mcbpc;
700 :     uint32_t cbpc;
701 :     uint32_t acpred_flag;
702 :     uint32_t cbpy;
703 :     uint32_t cbp;
704 :    
705 : chenm001 1.26 while (BitstreamShowBits(bs, 9) == 1)
706 :     BitstreamSkip(bs, 9);
707 :    
708 :     if (check_resync_marker(bs, 0))
709 :     {
710 : edgomez 1.51 bound = read_video_packet_header(bs, dec, 0,
711 : edgomez 1.47 &quant, NULL, NULL, &intra_dc_threshold);
712 :     x = bound % mb_width;
713 :     y = bound / mb_width;
714 : chenm001 1.26 }
715 :     mb = &dec->mbs[y * dec->mb_width + x];
716 :    
717 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
718 : chenm001 1.26
719 : Isibaar 1.1 mcbpc = get_mcbpc_intra(bs);
720 :     mb->mode = mcbpc & 7;
721 :     cbpc = (mcbpc >> 4);
722 :    
723 :     acpred_flag = BitstreamGetBit(bs);
724 :    
725 :     cbpy = get_cbpy(bs, 1);
726 :     cbp = (cbpy << 2) | cbpc;
727 :    
728 : edgomez 1.19 if (mb->mode == MODE_INTRA_Q) {
729 :     quant += dquant_table[BitstreamGetBits(bs, 2)];
730 :     if (quant > 31) {
731 : Isibaar 1.1 quant = 31;
732 : edgomez 1.19 } else if (quant < 1) {
733 : Isibaar 1.1 quant = 1;
734 :     }
735 :     }
736 :     mb->quant = quant;
737 : chenm001 1.30 mb->mvs[0].x = mb->mvs[0].y =
738 :     mb->mvs[1].x = mb->mvs[1].y =
739 :     mb->mvs[2].x = mb->mvs[2].y =
740 :     mb->mvs[3].x = mb->mvs[3].y =0;
741 : h 1.5
742 : edgomez 1.19 if (dec->interlacing) {
743 : h 1.5 mb->field_dct = BitstreamGetBit(bs);
744 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct);
745 : h 1.5 }
746 : Isibaar 1.1
747 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
748 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
749 :    
750 : Isibaar 1.1 }
751 : albeu 1.32 if(dec->out_frm)
752 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width);
753 : Isibaar 1.1 }
754 : edgomez 1.7
755 : Isibaar 1.1 }
756 :    
757 :    
758 : edgomez 1.51 static void
759 : edgomez 1.19 get_motion_vector(DECODER * dec,
760 : edgomez 1.51 Bitstream * bs,
761 :     int x,
762 :     int y,
763 :     int k,
764 :     VECTOR * ret_mv,
765 :     int fcode,
766 :     const int bound)
767 : Isibaar 1.1 {
768 : edgomez 1.7
769 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
770 :     const int high = (32 * scale_fac) - 1;
771 :     const int low = ((-32) * scale_fac);
772 :     const int range = (64 * scale_fac);
773 : Isibaar 1.1
774 : edgomez 1.51 const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k);
775 : edgomez 1.47 VECTOR mv;
776 : Isibaar 1.1
777 : edgomez 1.47 mv.x = get_mv(bs, fcode);
778 :     mv.y = get_mv(bs, fcode);
779 : edgomez 1.19
780 : edgomez 1.51 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);
781 : chenm001 1.26
782 : edgomez 1.47 mv.x += pmv.x;
783 :     mv.y += pmv.y;
784 : Isibaar 1.1
785 : edgomez 1.47 if (mv.x < low) {
786 :     mv.x += range;
787 :     } else if (mv.x > high) {
788 :     mv.x -= range;
789 : Isibaar 1.1 }
790 :    
791 : edgomez 1.47 if (mv.y < low) {
792 :     mv.y += range;
793 :     } else if (mv.y > high) {
794 :     mv.y -= range;
795 : Isibaar 1.1 }
796 :    
797 : edgomez 1.51 ret_mv->x = mv.x;
798 :     ret_mv->y = mv.y;
799 :     }
800 : Isibaar 1.1
801 : edgomez 1.47 /* for P_VOP set gmc_warp to NULL */
802 : edgomez 1.51 static void
803 : edgomez 1.19 decoder_pframe(DECODER * dec,
804 : edgomez 1.51 Bitstream * bs,
805 :     int rounding,
806 :     int reduced_resolution,
807 :     int quant,
808 :     int fcode,
809 :     int intra_dc_threshold,
810 :     const WARPPOINTS *const gmc_warp)
811 : Isibaar 1.1 {
812 :     uint32_t x, y;
813 : chenm001 1.26 uint32_t bound;
814 : albeu 1.32 int cp_mb, st_mb;
815 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
816 :     uint32_t mb_height = dec->mb_height;
817 : edgomez 1.51
818 :     if (reduced_resolution) {
819 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
820 :     mb_height = (dec->height + 31) / 32;
821 :     }
822 : Isibaar 1.1
823 : edgomez 1.57 if (!dec->is_edged[0]) {
824 :     start_timer();
825 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
826 :     dec->width, dec->height, dec->bs_version);
827 :     dec->is_edged[0] = 1;
828 :     stop_edges_timer();
829 :     }
830 : Isibaar 1.1
831 : edgomez 1.51 if (gmc_warp) {
832 :     /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
833 :     generate_GMCparameters( dec->sprite_warping_points,
834 :     dec->sprite_warping_accuracy, gmc_warp,
835 :     dec->width, dec->height, &dec->new_gmc_data);
836 : edgomez 1.47
837 : edgomez 1.51 /* image warping is done block-based in decoder_mbgmc(), now */
838 : edgomez 1.47 }
839 :    
840 : chenm001 1.26 bound = 0;
841 :    
842 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
843 : albeu 1.32 cp_mb = st_mb = 0;
844 : edgomez 1.47 for (x = 0; x < mb_width; x++) {
845 : chenm001 1.26 MACROBLOCK *mb;
846 :    
847 : edgomez 1.48 /* skip stuffing */
848 : chenm001 1.26 while (BitstreamShowBits(bs, 10) == 1)
849 :     BitstreamSkip(bs, 10);
850 :    
851 : edgomez 1.51 if (check_resync_marker(bs, fcode - 1)) {
852 :     bound = read_video_packet_header(bs, dec, fcode - 1,
853 : edgomez 1.47 &quant, &fcode, NULL, &intra_dc_threshold);
854 :     x = bound % mb_width;
855 :     y = bound / mb_width;
856 : chenm001 1.26 }
857 :     mb = &dec->mbs[y * dec->mb_width + x];
858 :    
859 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
860 : suxen_drol 1.23
861 : edgomez 1.51 if (!(BitstreamGetBit(bs))) { /* block _is_ coded */
862 :     uint32_t mcbpc, cbpc, cbpy, cbp;
863 :     uint32_t intra, acpred_flag = 0;
864 : edgomez 1.48 int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */
865 : Isibaar 1.1
866 : albeu 1.32 cp_mb++;
867 : Isibaar 1.1 mcbpc = get_mcbpc_inter(bs);
868 :     mb->mode = mcbpc & 7;
869 :     cbpc = (mcbpc >> 4);
870 : edgomez 1.51
871 :     DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode);
872 :     DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc);
873 : Isibaar 1.1
874 :     intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q);
875 : edgomez 1.19
876 : edgomez 1.47 if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q))
877 :     mcsel = BitstreamGetBit(bs);
878 : edgomez 1.51 else if (intra)
879 :     acpred_flag = BitstreamGetBit(bs);
880 : edgomez 1.47
881 : chenm001 1.26 cbpy = get_cbpy(bs, intra);
882 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel);
883 : chenm001 1.25
884 : Isibaar 1.1 cbp = (cbpy << 2) | cbpc;
885 :    
886 : edgomez 1.19 if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) {
887 : chenm001 1.26 int dquant = dquant_table[BitstreamGetBits(bs, 2)];
888 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant);
889 : chenm001 1.26 quant += dquant;
890 : edgomez 1.19 if (quant > 31) {
891 : Isibaar 1.1 quant = 31;
892 : chenm001 1.26 } else if (quant < 1) {
893 : Isibaar 1.1 quant = 1;
894 :     }
895 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant);
896 : Isibaar 1.1 }
897 :     mb->quant = quant;
898 : h 1.5
899 : edgomez 1.19 if (dec->interlacing) {
900 : h 1.37 if (cbp || intra) {
901 :     mb->field_dct = BitstreamGetBit(bs);
902 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
903 : h 1.37 }
904 : h 1.5
905 : edgomez 1.51 if ((mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) && !mcsel) {
906 : h 1.5 mb->field_pred = BitstreamGetBit(bs);
907 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
908 : h 1.5
909 : edgomez 1.19 if (mb->field_pred) {
910 : h 1.5 mb->field_for_top = BitstreamGetBit(bs);
911 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
912 : h 1.5 mb->field_for_bot = BitstreamGetBit(bs);
913 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
914 : h 1.5 }
915 :     }
916 :     }
917 : edgomez 1.51
918 : edgomez 1.47 if (mcsel) {
919 : edgomez 1.51 decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding);
920 : edgomez 1.47 continue;
921 :    
922 :     } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
923 : h 1.5
924 : edgomez 1.19 if (dec->interlacing && mb->field_pred) {
925 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
926 :     get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound);
927 : edgomez 1.19 } else {
928 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
929 : edgomez 1.47 mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
930 : h 1.5 }
931 : chl 1.35 } else if (mb->mode == MODE_INTER4V ) {
932 : chenm001 1.26 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
933 :     get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound);
934 :     get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound);
935 :     get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound);
936 : edgomez 1.51 } else { /* MODE_INTRA, MODE_INTRA_Q */
937 :     mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
938 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
939 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
940 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
941 : Isibaar 1.1 continue;
942 :     }
943 :    
944 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, cbp, bs,
945 :     rounding, reduced_resolution, 0);
946 : edgomez 1.47
947 : edgomez 1.51 } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */
948 : edgomez 1.47 mb->mode = MODE_NOT_CODED_GMC;
949 : edgomez 1.51 mb->quant = quant;
950 :     decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding);
951 : edgomez 1.39
952 : edgomez 1.47 if(dec->out_frm && cp_mb > 0) {
953 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
954 :     cp_mb = 0;
955 : edgomez 1.47 }
956 :     st_mb = x+1;
957 : edgomez 1.51 } else { /* not coded P_VOP macroblock */
958 : chenm001 1.14 mb->mode = MODE_NOT_CODED;
959 : edgomez 1.51 mb->quant = quant;
960 : edgomez 1.47
961 : Isibaar 1.1 mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
962 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
963 :    
964 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, 0, bs,
965 :     rounding, reduced_resolution, 0);
966 : edgomez 1.47
967 : albeu 1.32 if(dec->out_frm && cp_mb > 0) {
968 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
969 :     cp_mb = 0;
970 : albeu 1.32 }
971 :     st_mb = x+1;
972 : Isibaar 1.1 }
973 :     }
974 : edgomez 1.51
975 : albeu 1.32 if(dec->out_frm && cp_mb > 0)
976 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
977 : Isibaar 1.1 }
978 :     }
979 :    
980 : edgomez 1.47
981 : edgomez 1.48 /* decode B-frame motion vector */
982 : edgomez 1.51 static void
983 :     get_b_motion_vector(Bitstream * bs,
984 : edgomez 1.47 VECTOR * mv,
985 :     int fcode,
986 : edgomez 1.51 const VECTOR pmv,
987 :     const DECODER * const dec,
988 :     const int x, const int y)
989 : chenm001 1.14 {
990 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
991 :     const int high = (32 * scale_fac) - 1;
992 :     const int low = ((-32) * scale_fac);
993 :     const int range = (64 * scale_fac);
994 : edgomez 1.7
995 : edgomez 1.51 int mv_x = get_mv(bs, fcode);
996 :     int mv_y = get_mv(bs, fcode);
997 : Isibaar 1.1
998 : edgomez 1.51 mv_x += pmv.x;
999 :     mv_y += pmv.y;
1000 : albeu 1.32
1001 : edgomez 1.51 if (mv_x < low)
1002 : edgomez 1.47 mv_x += range;
1003 : edgomez 1.51 else if (mv_x > high)
1004 : edgomez 1.47 mv_x -= range;
1005 :    
1006 : edgomez 1.51 if (mv_y < low)
1007 : edgomez 1.47 mv_y += range;
1008 : edgomez 1.51 else if (mv_y > high)
1009 : edgomez 1.47 mv_y -= range;
1010 :    
1011 : edgomez 1.51 mv->x = mv_x;
1012 :     mv->y = mv_y;
1013 : edgomez 1.47 }
1014 :    
1015 : edgomez 1.51 /* decode an B-frame direct & interpolate macroblock */
1016 :     static void
1017 : edgomez 1.47 decoder_bf_interpolate_mbinter(DECODER * dec,
1018 : edgomez 1.51 IMAGE forward,
1019 :     IMAGE backward,
1020 :     const MACROBLOCK * pMB,
1021 :     const uint32_t x_pos,
1022 :     const uint32_t y_pos,
1023 :     Bitstream * bs,
1024 :     const int direct)
1025 : edgomez 1.47 {
1026 :     uint32_t stride = dec->edged_width;
1027 :     uint32_t stride2 = stride / 2;
1028 :     int uv_dx, uv_dy;
1029 :     int b_uv_dx, b_uv_dy;
1030 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
1031 : edgomez 1.51 const uint32_t cbp = pMB->cbp;
1032 : edgomez 1.47
1033 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
1034 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
1035 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
1036 :    
1037 : edgomez 1.51 if (!direct) {
1038 : edgomez 1.47 uv_dx = pMB->mvs[0].x;
1039 :     uv_dy = pMB->mvs[0].y;
1040 :     b_uv_dx = pMB->b_mvs[0].x;
1041 :     b_uv_dy = pMB->b_mvs[0].y;
1042 :    
1043 : edgomez 1.51 if (dec->quarterpel) {
1044 : edgomez 1.47 uv_dx /= 2;
1045 :     uv_dy /= 2;
1046 :     b_uv_dx /= 2;
1047 :     b_uv_dy /= 2;
1048 :     }
1049 :    
1050 :     uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
1051 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
1052 :     b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3];
1053 :     b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3];
1054 : edgomez 1.51
1055 : edgomez 1.47 } else {
1056 : edgomez 1.62 uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x;
1057 :     uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y;
1058 :     b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x;
1059 :     b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y;
1060 :    
1061 :     if (dec->quarterpel) {
1062 :     uv_dx /= 2;
1063 :     uv_dy /= 2;
1064 :     b_uv_dx /= 2;
1065 :     b_uv_dy /= 2;
1066 : edgomez 1.51 }
1067 : edgomez 1.47
1068 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
1069 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
1070 :     b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf];
1071 :     b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf];
1072 : edgomez 1.47 }
1073 :    
1074 :     start_timer();
1075 :     if(dec->quarterpel) {
1076 : edgomez 1.51 if(!direct) {
1077 : edgomez 1.47 interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1078 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1079 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1080 :     } else {
1081 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1082 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1083 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1084 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1085 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1086 :     pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1087 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1088 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1089 :     pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1090 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1091 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1092 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1093 : edgomez 1.47 }
1094 : edgomez 1.51 } else {
1095 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos,
1096 : edgomez 1.51 pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1097 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos,
1098 : edgomez 1.51 pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1099 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8,
1100 : edgomez 1.51 pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1101 :     interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos + 8,
1102 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1103 : edgomez 1.47 }
1104 :    
1105 :     interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx,
1106 : edgomez 1.51 uv_dy, stride2, 0);
1107 : edgomez 1.47 interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx,
1108 : edgomez 1.51 uv_dy, stride2, 0);
1109 : edgomez 1.47
1110 :    
1111 :     if(dec->quarterpel) {
1112 : edgomez 1.51 if(!direct) {
1113 : edgomez 1.65 interpolate16x16_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1114 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1115 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1116 : edgomez 1.51 } else {
1117 : edgomez 1.65 interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1118 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1119 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1120 :     interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1121 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1122 :     pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1123 :     interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1124 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1125 :     pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1126 :     interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1127 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1128 :     pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1129 : edgomez 1.47 }
1130 : edgomez 1.51 } else {
1131 : edgomez 1.65 interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos, 16 * y_pos,
1132 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1133 :     interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos + 8,
1134 :     16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1135 :     interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos,
1136 :     16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1137 :     interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos + 8,
1138 :     16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1139 :     }
1140 :    
1141 :     interpolate8x8_add_switch(dec->cur.u, backward.u, 8 * x_pos, 8 * y_pos,
1142 :     b_uv_dx, b_uv_dy, stride2, 0);
1143 :     interpolate8x8_add_switch(dec->cur.v, backward.v, 8 * x_pos, 8 * y_pos,
1144 :     b_uv_dx, b_uv_dy, stride2, 0);
1145 : edgomez 1.47
1146 :     stop_comp_timer();
1147 :    
1148 : edgomez 1.51 if (cbp)
1149 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
1150 : edgomez 1.47 }
1151 :    
1152 : edgomez 1.48 /* for decode B-frame dbquant */
1153 : edgomez 1.51 static __inline int32_t
1154 : edgomez 1.47 get_dbquant(Bitstream * bs)
1155 :     {
1156 : edgomez 1.51 if (!BitstreamGetBit(bs)) /* '0' */
1157 : edgomez 1.47 return (0);
1158 : edgomez 1.51 else if (!BitstreamGetBit(bs)) /* '10' */
1159 : edgomez 1.47 return (-2);
1160 : edgomez 1.51 else /* '11' */
1161 : edgomez 1.48 return (2);
1162 : edgomez 1.47 }
1163 :    
1164 : edgomez 1.48 /*
1165 : edgomez 1.51 * decode B-frame mb_type
1166 :     * bit ret_value
1167 :     * 1 0
1168 :     * 01 1
1169 :     * 001 2
1170 :     * 0001 3
1171 : edgomez 1.48 */
1172 : edgomez 1.51 static int32_t __inline
1173 : edgomez 1.47 get_mbtype(Bitstream * bs)
1174 :     {
1175 :     int32_t mb_type;
1176 :    
1177 : edgomez 1.51 for (mb_type = 0; mb_type <= 3; mb_type++)
1178 : edgomez 1.47 if (BitstreamGetBit(bs))
1179 : edgomez 1.51 return (mb_type);
1180 : edgomez 1.47
1181 : edgomez 1.51 return -1;
1182 : edgomez 1.47 }
1183 :    
1184 : edgomez 1.51 static void
1185 : edgomez 1.47 decoder_bframe(DECODER * dec,
1186 : edgomez 1.51 Bitstream * bs,
1187 :     int quant,
1188 :     int fcode_forward,
1189 :     int fcode_backward)
1190 : edgomez 1.47 {
1191 :     uint32_t x, y;
1192 :     VECTOR mv;
1193 :     const VECTOR zeromv = {0,0};
1194 : edgomez 1.51 int i;
1195 : edgomez 1.47
1196 : edgomez 1.57 if (!dec->is_edged[0]) {
1197 :     start_timer();
1198 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
1199 :     dec->width, dec->height, dec->bs_version);
1200 :     dec->is_edged[0] = 1;
1201 :     stop_edges_timer();
1202 :     }
1203 :    
1204 :     if (!dec->is_edged[1]) {
1205 :     start_timer();
1206 :     image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height,
1207 :     dec->width, dec->height, dec->bs_version);
1208 :     dec->is_edged[1] = 1;
1209 :     stop_edges_timer();
1210 :     }
1211 : edgomez 1.47
1212 :     for (y = 0; y < dec->mb_height; y++) {
1213 : edgomez 1.48 /* Initialize Pred Motion Vector */
1214 : edgomez 1.47 dec->p_fmv = dec->p_bmv = zeromv;
1215 :     for (x = 0; x < dec->mb_width; x++) {
1216 :     MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x];
1217 :     MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x];
1218 : edgomez 1.51 const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward;
1219 :     uint32_t intra_dc_threshold; /* fake variable */
1220 :    
1221 :     if (check_resync_marker(bs, fcode_max - 1)) {
1222 :     int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant,
1223 :     &fcode_forward, &fcode_backward, &intra_dc_threshold);
1224 :     x = bound % dec->mb_width;
1225 :     y = bound / dec->mb_width;
1226 :     /* reset predicted macroblocks */
1227 :     dec->p_fmv = dec->p_bmv = zeromv;
1228 :     }
1229 : edgomez 1.47
1230 :     mv =
1231 :     mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] =
1232 :     mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv;
1233 : edgomez 1.51 mb->quant = quant;
1234 : edgomez 1.47
1235 : edgomez 1.48 /*
1236 : edgomez 1.51 * skip if the co-located P_VOP macroblock is not coded
1237 : edgomez 1.48 * if not codec in co-located S_VOP macroblock is _not_
1238 :     * automatically skipped
1239 :     */
1240 : edgomez 1.47
1241 :     if (last_mb->mode == MODE_NOT_CODED) {
1242 :     mb->cbp = 0;
1243 : edgomez 1.51 mb->mode = MODE_FORWARD;
1244 :     decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1245 : edgomez 1.47 continue;
1246 :     }
1247 :    
1248 : edgomez 1.48 if (!BitstreamGetBit(bs)) { /* modb=='0' */
1249 : edgomez 1.47 const uint8_t modb2 = BitstreamGetBit(bs);
1250 :    
1251 : edgomez 1.51 mb->mode = get_mbtype(bs);
1252 : edgomez 1.47
1253 : edgomez 1.51 if (!modb2) /* modb=='00' */
1254 : edgomez 1.47 mb->cbp = BitstreamGetBits(bs, 6);
1255 : edgomez 1.51 else
1256 : edgomez 1.47 mb->cbp = 0;
1257 : edgomez 1.51
1258 :     if (mb->mode && mb->cbp) {
1259 : edgomez 1.47 quant += get_dbquant(bs);
1260 : edgomez 1.51 if (quant > 31)
1261 : edgomez 1.47 quant = 31;
1262 : edgomez 1.51 else if (quant < 1)
1263 : edgomez 1.47 quant = 1;
1264 : edgomez 1.51 }
1265 :     mb->quant = quant;
1266 :    
1267 :     if (dec->interlacing) {
1268 :     if (mb->cbp) {
1269 :     mb->field_dct = BitstreamGetBit(bs);
1270 :     DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
1271 :     }
1272 :    
1273 :     if (mb->mode) {
1274 :     mb->field_pred = BitstreamGetBit(bs);
1275 :     DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
1276 :    
1277 :     if (mb->field_pred) {
1278 :     mb->field_for_top = BitstreamGetBit(bs);
1279 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
1280 :     mb->field_for_bot = BitstreamGetBit(bs);
1281 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
1282 :     }
1283 : edgomez 1.47 }
1284 :     }
1285 : edgomez 1.51
1286 : edgomez 1.47 } else {
1287 : edgomez 1.51 mb->mode = MODE_DIRECT_NONE_MV;
1288 : edgomez 1.47 mb->cbp = 0;
1289 :     }
1290 :    
1291 : edgomez 1.51 switch (mb->mode) {
1292 : edgomez 1.47 case MODE_DIRECT:
1293 : edgomez 1.51 get_b_motion_vector(bs, &mv, 1, zeromv, dec, x, y);
1294 : edgomez 1.47
1295 :     case MODE_DIRECT_NONE_MV:
1296 : edgomez 1.51 for (i = 0; i < 4; i++) {
1297 : edgomez 1.58 mb->mvs[i].x = last_mb->mvs[i].x*dec->time_bp/dec->time_pp + mv.x;
1298 :     mb->mvs[i].y = last_mb->mvs[i].y*dec->time_bp/dec->time_pp + mv.y;
1299 :    
1300 :     mb->b_mvs[i].x = (mv.x)
1301 :     ? mb->mvs[i].x - last_mb->mvs[i].x
1302 :     : last_mb->mvs[i].x*(dec->time_bp - dec->time_pp)/dec->time_pp;
1303 :     mb->b_mvs[i].y = (mv.y)
1304 :     ? mb->mvs[i].y - last_mb->mvs[i].y
1305 :     : last_mb->mvs[i].y*(dec->time_bp - dec->time_pp)/dec->time_pp;
1306 : edgomez 1.47 }
1307 : edgomez 1.51
1308 : edgomez 1.47 decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1309 : edgomez 1.51 mb, x, y, bs, 1);
1310 : edgomez 1.47 break;
1311 :    
1312 :     case MODE_INTERPOLATE:
1313 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1314 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1315 :    
1316 : edgomez 1.51 get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1317 :     dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0];
1318 : edgomez 1.47
1319 :     decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1320 : edgomez 1.51 mb, x, y, bs, 0);
1321 : edgomez 1.47 break;
1322 :    
1323 :     case MODE_BACKWARD:
1324 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1325 : edgomez 1.47 dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1326 :    
1327 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0);
1328 : edgomez 1.47 break;
1329 :    
1330 :     case MODE_FORWARD:
1331 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1332 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1333 :    
1334 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1335 : edgomez 1.47 break;
1336 :    
1337 :     default:
1338 : edgomez 1.51 DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode);
1339 : edgomez 1.47 }
1340 : edgomez 1.48 } /* End of for */
1341 :     }
1342 : edgomez 1.47 }
1343 :    
1344 :     /* perform post processing if necessary, and output the image */
1345 : edgomez 1.51 void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs,
1346 :     xvid_dec_frame_t * frame, xvid_dec_stats_t * stats,
1347 :     int coding_type, int quant)
1348 : edgomez 1.47 {
1349 : suxen_drol 1.55 const int brightness = XVID_VERSION_MINOR(frame->version) >= 1 ? frame->brightness : 0;
1350 :    
1351 : edgomez 1.51 if (dec->cartoon_mode)
1352 :     frame->general &= ~XVID_FILMEFFECT;
1353 : edgomez 1.47
1354 : suxen_drol 1.55 if ((frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) || brightness!=0)
1355 : suxen_drol 1.52 && mbs != NULL) /* post process */
1356 : edgomez 1.47 {
1357 :     /* note: image is stored to tmp */
1358 :     image_copy(&dec->tmp, img, dec->edged_width, dec->height);
1359 : edgomez 1.51 image_postproc(&dec->postproc, &dec->tmp, dec->edged_width,
1360 :     mbs, dec->mb_width, dec->mb_height, dec->mb_width,
1361 : suxen_drol 1.55 frame->general, brightness, dec->frames, (coding_type == B_VOP));
1362 : edgomez 1.47 img = &dec->tmp;
1363 :     }
1364 :    
1365 :     image_output(img, dec->width, dec->height,
1366 : edgomez 1.51 dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride,
1367 :     frame->output.csp, dec->interlacing);
1368 :    
1369 :     if (stats) {
1370 :     stats->type = coding2type(coding_type);
1371 :     stats->data.vop.time_base = (int)dec->time_base;
1372 :     stats->data.vop.time_increment = 0; /* XXX: todo */
1373 :     stats->data.vop.qscale_stride = dec->mb_width;
1374 :     stats->data.vop.qscale = dec->qscale;
1375 :     if (stats->data.vop.qscale != NULL && mbs != NULL) {
1376 :     int i;
1377 :     for (i = 0; i < dec->mb_width*dec->mb_height; i++)
1378 :     stats->data.vop.qscale[i] = mbs[i].quant;
1379 :     } else
1380 :     stats->data.vop.qscale = NULL;
1381 :     }
1382 : edgomez 1.47 }
1383 :    
1384 :    
1385 :     int
1386 :     decoder_decode(DECODER * dec,
1387 : edgomez 1.51 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats)
1388 : edgomez 1.47 {
1389 :    
1390 :     Bitstream bs;
1391 :     uint32_t rounding;
1392 :     uint32_t reduced_resolution;
1393 : edgomez 1.51 uint32_t quant = 2;
1394 : edgomez 1.47 uint32_t fcode_forward;
1395 :     uint32_t fcode_backward;
1396 :     uint32_t intra_dc_threshold;
1397 :     WARPPOINTS gmc_warp;
1398 : edgomez 1.51 int coding_type;
1399 :     int success, output, seen_something;
1400 :    
1401 :     if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */
1402 :     return XVID_ERR_VERSION;
1403 : edgomez 1.47
1404 :     start_global_timer();
1405 :    
1406 : edgomez 1.51 dec->low_delay_default = (frame->general & XVID_LOWDELAY);
1407 :     if ((frame->general & XVID_DISCONTINUITY))
1408 : edgomez 1.47 dec->frames = 0;
1409 : edgomez 1.51 dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL;
1410 : edgomez 1.47
1411 : edgomez 1.51 if (frame->length < 0) { /* decoder flush */
1412 :     int ret;
1413 :     /* if not decoding "low_delay/packed", and this isn't low_delay and
1414 :     we have a reference frame, then outout the reference frame */
1415 :     if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) {
1416 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1417 :     dec->frames = 0;
1418 :     ret = 0;
1419 :     } else {
1420 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1421 :     ret = XVID_ERR_END;
1422 : edgomez 1.47 }
1423 :    
1424 :     emms();
1425 :     stop_global_timer();
1426 : edgomez 1.51 return ret;
1427 : edgomez 1.47 }
1428 : edgomez 1.19
1429 : Isibaar 1.1 BitstreamInit(&bs, frame->bitstream, frame->length);
1430 :    
1431 : edgomez 1.48 /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */
1432 : edgomez 1.47 if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f)
1433 :     {
1434 :     image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width,
1435 : edgomez 1.51 (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing);
1436 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1437 : edgomez 1.47 emms();
1438 : edgomez 1.51 return 1; /* one byte consumed */
1439 : edgomez 1.47 }
1440 :    
1441 : edgomez 1.51 success = 0;
1442 :     output = 0;
1443 :     seen_something = 0;
1444 :    
1445 : edgomez 1.47 repeat:
1446 :    
1447 : edgomez 1.51 coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution,
1448 : edgomez 1.47 &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp);
1449 :    
1450 : edgomez 1.51 DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n",
1451 :     coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp);
1452 : Isibaar 1.1
1453 : edgomez 1.51 if (coding_type == -1) { /* nothing */
1454 : edgomez 1.47 if (success) goto done;
1455 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1456 : edgomez 1.47 emms();
1457 : edgomez 1.51 return BitstreamPos(&bs)/8;
1458 : Isibaar 1.1 }
1459 :    
1460 : edgomez 1.51 if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */
1461 :    
1462 :     if (coding_type == -3)
1463 : edgomez 1.47 decoder_resize(dec);
1464 : edgomez 1.51
1465 :     if (stats) {
1466 :     stats->type = XVID_TYPE_VOL;
1467 : edgomez 1.47 stats->data.vol.general = 0;
1468 : edgomez 1.51 /*XXX: if (dec->interlacing)
1469 :     stats->data.vol.general |= ++INTERLACING; */
1470 : edgomez 1.47 stats->data.vol.width = dec->width;
1471 :     stats->data.vol.height = dec->height;
1472 : edgomez 1.51 stats->data.vol.par = dec->aspect_ratio;
1473 : edgomez 1.47 stats->data.vol.par_width = dec->par_width;
1474 :     stats->data.vol.par_height = dec->par_height;
1475 :     emms();
1476 : edgomez 1.51 return BitstreamPos(&bs)/8; /* number of bytes consumed */
1477 : edgomez 1.47 }
1478 : syskin 1.56 goto repeat;
1479 :     }
1480 :    
1481 :     if(dec->frames == 0 && coding_type != I_VOP) {
1482 :     /* 1st frame is not an i-vop */
1483 : edgomez 1.47 goto repeat;
1484 : edgomez 1.51 }
1485 : edgomez 1.47
1486 : 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 */
1487 : edgomez 1.47
1488 :     /* packed_mode: special-N_VOP treament */
1489 : edgomez 1.51 if (dec->packed_mode && coding_type == N_VOP) {
1490 :     if (dec->low_delay_default && dec->frames > 0) {
1491 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1492 : edgomez 1.47 output = 1;
1493 :     }
1494 :     /* ignore otherwise */
1495 : edgomez 1.51 } else if (coding_type != B_VOP) {
1496 :     switch(coding_type) {
1497 : edgomez 1.47 case I_VOP :
1498 :     decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold);
1499 :     break;
1500 :     case P_VOP :
1501 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1502 : edgomez 1.47 fcode_forward, intra_dc_threshold, NULL);
1503 :     break;
1504 :     case S_VOP :
1505 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1506 : edgomez 1.47 fcode_forward, intra_dc_threshold, &gmc_warp);
1507 :     break;
1508 :     case N_VOP :
1509 : edgomez 1.51 /* XXX: not_coded vops are not used for forward prediction */
1510 :     /* we should not swap(last_mbs,mbs) */
1511 : edgomez 1.47 image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height);
1512 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */
1513 : edgomez 1.47 break;
1514 :     }
1515 :    
1516 : edgomez 1.51 if (reduced_resolution) {
1517 : edgomez 1.47 image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs,
1518 :     (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width,
1519 : edgomez 1.51 16, 0);
1520 : edgomez 1.47 }
1521 : Isibaar 1.1
1522 : edgomez 1.47 /* note: for packed_mode, output is performed when the special-N_VOP is decoded */
1523 : edgomez 1.51 if (!(dec->low_delay_default && dec->packed_mode)) {
1524 :     if (dec->low_delay) {
1525 :     decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1526 : edgomez 1.47 output = 1;
1527 : edgomez 1.51 } else if (dec->frames > 0) { /* is the reference frame valid? */
1528 : edgomez 1.47 /* output the reference frame */
1529 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1530 : edgomez 1.47 output = 1;
1531 :     }
1532 :     }
1533 : Isibaar 1.18
1534 : chenm001 1.14 image_swap(&dec->refn[0], &dec->refn[1]);
1535 : edgomez 1.57 dec->is_edged[1] = dec->is_edged[0];
1536 : chenm001 1.14 image_swap(&dec->cur, &dec->refn[0]);
1537 : edgomez 1.57 dec->is_edged[0] = 0;
1538 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs);
1539 : edgomez 1.47 dec->last_reduced_resolution = reduced_resolution;
1540 : edgomez 1.51 dec->last_coding_type = coding_type;
1541 : edgomez 1.47
1542 :     dec->frames++;
1543 :     seen_something = 1;
1544 : chenm001 1.31
1545 : edgomez 1.51 } else { /* B_VOP */
1546 : edgomez 1.47
1547 : edgomez 1.51 if (dec->low_delay) {
1548 :     DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n");
1549 : syskin 1.60 dec->low_delay = 0;
1550 : edgomez 1.47 }
1551 :    
1552 : edgomez 1.51 if (dec->frames < 2) {
1553 : edgomez 1.47 /* attemping to decode a bvop without atleast 2 reference frames */
1554 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1555 :     "broken b-frame, mising ref frames");
1556 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1557 :     } else if (dec->time_pp <= dec->time_bp) {
1558 :     /* this occurs when dx50_bvop_compatibility==0 sequences are
1559 : edgomez 1.47 decoded in vfw. */
1560 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1561 :     "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp);
1562 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1563 :     } else {
1564 : edgomez 1.47 decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward);
1565 : edgomez 1.51 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1566 : edgomez 1.47 }
1567 :    
1568 :     output = 1;
1569 :     dec->frames++;
1570 : chenm001 1.14 }
1571 :    
1572 : edgomez 1.51 #if 0 /* Avoids to read to much data because of 32bit reads in our BS functions */
1573 :     BitstreamByteAlign(&bs);
1574 :     #endif
1575 : edgomez 1.47
1576 :     /* low_delay_default mode: repeat in packed_mode */
1577 : edgomez 1.51 if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) {
1578 : edgomez 1.47 success = 1;
1579 :     goto repeat;
1580 :     }
1581 :    
1582 :     done :
1583 :    
1584 :     /* low_delay_default mode: if we've gotten here without outputting anything,
1585 :     then output the recently decoded frame, or print an error message */
1586 : edgomez 1.51 if (dec->low_delay_default && output == 0) {
1587 :     if (dec->packed_mode && seen_something) {
1588 : edgomez 1.47 /* output the recently decoded frame */
1589 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1590 :     } else {
1591 : edgomez 1.47 image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128);
1592 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1593 :     "warning: nothing to output");
1594 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64,
1595 :     "bframe decoder lag");
1596 :    
1597 : edgomez 1.51 decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP, quant);
1598 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1599 : edgomez 1.47 }
1600 :     }
1601 : Isibaar 1.50
1602 : Isibaar 1.1 emms();
1603 :     stop_global_timer();
1604 :    
1605 : edgomez 1.51 return (BitstreamPos(&bs) + 7) / 8; /* number of bytes consumed */
1606 : Isibaar 1.1 }

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