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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 : 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 : edgomez 1.51 #include "motion/gmc.h"
58 : Isibaar 1.1
59 :     #include "image/image.h"
60 :     #include "image/colorspace.h"
61 : edgomez 1.51 #include "image/postprocessing.h"
62 : Isibaar 1.3 #include "utils/mem_align.h"
63 : Isibaar 1.1
64 : edgomez 1.51 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 1.51 if (dec->last_mbs)
77 : edgomez 1.47 xvid_free(dec->last_mbs);
78 :     if (dec->mbs)
79 :     xvid_free(dec->mbs);
80 : edgomez 1.51 if (dec->qscale)
81 :     xvid_free(dec->qscale);
82 : Isibaar 1.1
83 : edgomez 1.47 /* realloc */
84 : Isibaar 1.1 dec->mb_width = (dec->width + 15) / 16;
85 :     dec->mb_height = (dec->height + 15) / 16;
86 :    
87 :     dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE;
88 :     dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE;
89 : edgomez 1.19
90 :     if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) {
91 : Isibaar 1.3 xvid_free(dec);
92 : Isibaar 1.1 return XVID_ERR_MEMORY;
93 :     }
94 :    
95 : edgomez 1.19 if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) {
96 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
97 : Isibaar 1.3 xvid_free(dec);
98 : Isibaar 1.1 return XVID_ERR_MEMORY;
99 :     }
100 : edgomez 1.47
101 : edgomez 1.48 /* Support B-frame to reference last 2 frame */
102 : edgomez 1.19 if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) {
103 : chenm001 1.11 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
104 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
105 :     xvid_free(dec);
106 :     return XVID_ERR_MEMORY;
107 :     }
108 : edgomez 1.47 if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) {
109 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
110 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
111 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
112 :     xvid_free(dec);
113 :     return XVID_ERR_MEMORY;
114 :     }
115 :    
116 :     if (image_create(&dec->qtmp, dec->edged_width, dec->edged_height)) {
117 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
118 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
119 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
120 :     image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
121 :     xvid_free(dec);
122 :     return XVID_ERR_MEMORY;
123 :     }
124 :    
125 :     if (image_create(&dec->gmc, dec->edged_width, dec->edged_height)) {
126 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
127 : chenm001 1.14 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
128 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
129 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
130 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
131 : chenm001 1.14 xvid_free(dec);
132 :     return XVID_ERR_MEMORY;
133 :     }
134 : Isibaar 1.1
135 : edgomez 1.19 dec->mbs =
136 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
137 :     CACHE_LINE);
138 :     if (dec->mbs == NULL) {
139 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
140 : chenm001 1.14 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
141 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
142 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
143 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
144 : chenm001 1.14 xvid_free(dec);
145 :     return XVID_ERR_MEMORY;
146 :     }
147 : Isibaar 1.20 memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
148 :    
149 : edgomez 1.48 /* For skip MB flag */
150 : edgomez 1.19 dec->last_mbs =
151 :     xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height,
152 :     CACHE_LINE);
153 :     if (dec->last_mbs == NULL) {
154 : chenm001 1.14 xvid_free(dec->mbs);
155 :     image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
156 :     image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
157 :     image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
158 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
159 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
160 : Isibaar 1.3 xvid_free(dec);
161 : Isibaar 1.1 return XVID_ERR_MEMORY;
162 :     }
163 : Isibaar 1.20
164 :     memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height);
165 : Isibaar 1.1
166 : edgomez 1.51 /* nothing happens if that fails */
167 :     dec->qscale =
168 :     xvid_malloc(sizeof(int) * dec->mb_width * dec->mb_height, CACHE_LINE);
169 :    
170 :     if (dec->qscale)
171 :     memset(dec->qscale, 0, sizeof(int) * dec->mb_width * dec->mb_height);
172 :    
173 :     return 0;
174 : edgomez 1.47 }
175 :    
176 :    
177 :     int
178 : edgomez 1.51 decoder_create(xvid_dec_create_t * create)
179 : edgomez 1.47 {
180 :     DECODER *dec;
181 :    
182 : edgomez 1.51 if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */
183 :     return XVID_ERR_VERSION;
184 :    
185 : edgomez 1.47 dec = xvid_malloc(sizeof(DECODER), CACHE_LINE);
186 :     if (dec == NULL) {
187 :     return XVID_ERR_MEMORY;
188 :     }
189 : edgomez 1.51
190 : edgomez 1.47 memset(dec, 0, sizeof(DECODER));
191 :    
192 : edgomez 1.51 dec->mpeg_quant_matrices = xvid_malloc(sizeof(uint16_t) * 64 * 8, CACHE_LINE);
193 :     if (dec->mpeg_quant_matrices == NULL) {
194 :     xvid_free(dec);
195 :     return XVID_ERR_MEMORY;
196 :     }
197 :    
198 :     create->handle = dec;
199 : edgomez 1.47
200 : edgomez 1.51 dec->width = create->width;
201 :     dec->height = create->height;
202 : edgomez 1.47
203 :     image_null(&dec->cur);
204 :     image_null(&dec->refn[0]);
205 :     image_null(&dec->refn[1]);
206 :     image_null(&dec->tmp);
207 :     image_null(&dec->qtmp);
208 :    
209 : edgomez 1.48 /* image based GMC */
210 : edgomez 1.47 image_null(&dec->gmc);
211 :    
212 :     dec->mbs = NULL;
213 :     dec->last_mbs = NULL;
214 : edgomez 1.51 dec->qscale = NULL;
215 : edgomez 1.47
216 : Isibaar 1.1 init_timer();
217 : edgomez 1.51 init_postproc(&dec->postproc);
218 :     init_mpeg_matrix(dec->mpeg_quant_matrices);
219 : Isibaar 1.1
220 : edgomez 1.48 /* For B-frame support (used to save reference frame's time */
221 : edgomez 1.47 dec->frames = 0;
222 : chenm001 1.14 dec->time = dec->time_base = dec->last_time_base = 0;
223 : edgomez 1.47 dec->low_delay = 0;
224 :     dec->packed_mode = 0;
225 : syskin 1.56 dec->time_inc_resolution = 1; /* until VOL header says otherwise */
226 : edgomez 1.47
227 :     dec->fixed_dimensions = (dec->width > 0 && dec->height > 0);
228 : edgomez 1.19
229 : edgomez 1.47 if (dec->fixed_dimensions)
230 :     return decoder_resize(dec);
231 :     else
232 : edgomez 1.51 return 0;
233 : Isibaar 1.1 }
234 :    
235 :    
236 : edgomez 1.19 int
237 :     decoder_destroy(DECODER * dec)
238 : Isibaar 1.1 {
239 : chenm001 1.14 xvid_free(dec->last_mbs);
240 : Isibaar 1.3 xvid_free(dec->mbs);
241 : edgomez 1.51 xvid_free(dec->qscale);
242 : edgomez 1.47
243 : edgomez 1.48 /* image based GMC */
244 :     image_destroy(&dec->gmc, dec->edged_width, dec->edged_height);
245 : edgomez 1.47
246 : chenm001 1.11 image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height);
247 : chenm001 1.14 image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height);
248 : edgomez 1.47 image_destroy(&dec->tmp, dec->edged_width, dec->edged_height);
249 :     image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height);
250 : Isibaar 1.1 image_destroy(&dec->cur, dec->edged_width, dec->edged_height);
251 : edgomez 1.51 xvid_free(dec->mpeg_quant_matrices);
252 : Isibaar 1.3 xvid_free(dec);
253 : Isibaar 1.1
254 :     write_timer();
255 : edgomez 1.51 return 0;
256 : Isibaar 1.1 }
257 :    
258 : edgomez 1.19 static const int32_t dquant_table[4] = {
259 : Isibaar 1.1 -1, -2, 1, 2
260 :     };
261 :    
262 : edgomez 1.48 /* decode an intra macroblock */
263 : edgomez 1.51 static void
264 : edgomez 1.19 decoder_mbintra(DECODER * dec,
265 :     MACROBLOCK * pMB,
266 :     const uint32_t x_pos,
267 :     const uint32_t y_pos,
268 :     const uint32_t acpred_flag,
269 :     const uint32_t cbp,
270 :     Bitstream * bs,
271 :     const uint32_t quant,
272 : chenm001 1.26 const uint32_t intra_dc_threshold,
273 : edgomez 1.47 const unsigned int bound,
274 :     const int reduced_resolution)
275 : Isibaar 1.1 {
276 : edgomez 1.7
277 :     DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE);
278 : edgomez 1.19 DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
279 : edgomez 1.7
280 : h 1.8 uint32_t stride = dec->edged_width;
281 :     uint32_t stride2 = stride / 2;
282 :     uint32_t next_block = stride * 8;
283 : h 1.5 uint32_t i;
284 :     uint32_t iQuant = pMB->quant;
285 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
286 :    
287 : edgomez 1.47 if (reduced_resolution) {
288 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
289 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
290 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
291 :     }else{
292 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
293 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
294 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
295 :     }
296 : edgomez 1.7
297 : edgomez 1.48 memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */
298 : h 1.5
299 : edgomez 1.19 for (i = 0; i < 6; i++) {
300 : h 1.5 uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4);
301 : Isibaar 1.1 int16_t predictors[8];
302 :     int start_coeff;
303 :    
304 :     start_timer();
305 : edgomez 1.19 predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64],
306 : edgomez 1.59 iQuant, iDcScaler, predictors, bound);
307 : edgomez 1.19 if (!acpred_flag) {
308 : h 1.5 pMB->acpred_directions[i] = 0;
309 : Isibaar 1.1 }
310 :     stop_prediction_timer();
311 :    
312 : edgomez 1.19 if (quant < intra_dc_threshold) {
313 : Isibaar 1.1 int dc_size;
314 :     int dc_dif;
315 :    
316 : edgomez 1.19 dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs);
317 :     dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0;
318 : Isibaar 1.1
319 : edgomez 1.19 if (dc_size > 8) {
320 : edgomez 1.48 BitstreamSkip(bs, 1); /* marker */
321 : Isibaar 1.1 }
322 : edgomez 1.19
323 :     block[i * 64 + 0] = dc_dif;
324 : Isibaar 1.1 start_coeff = 1;
325 : chenm001 1.26
326 : edgomez 1.51 DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif);
327 : edgomez 1.19 } else {
328 : Isibaar 1.1 start_coeff = 0;
329 :     }
330 :    
331 :     start_timer();
332 : edgomez 1.48 if (cbp & (1 << (5 - i))) /* coded */
333 : Isibaar 1.1 {
334 : edgomez 1.47 int direction = dec->alternate_vertical_scan ?
335 :     2 : pMB->acpred_directions[i];
336 :    
337 :     get_intra_block(bs, &block[i * 64], direction, start_coeff);
338 : Isibaar 1.1 }
339 :     stop_coding_timer();
340 :    
341 :     start_timer();
342 : edgomez 1.59 add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors, dec->bs_version);
343 : Isibaar 1.1 stop_prediction_timer();
344 :    
345 :     start_timer();
346 : edgomez 1.19 if (dec->quant_type == 0) {
347 : edgomez 1.51 dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
348 : edgomez 1.19 } else {
349 : edgomez 1.51 dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices);
350 : Isibaar 1.1 }
351 :     stop_iquant_timer();
352 :    
353 :     start_timer();
354 : edgomez 1.19 idct(&data[i * 64]);
355 : Isibaar 1.1 stop_idct_timer();
356 : edgomez 1.47
357 : h 1.5 }
358 : Isibaar 1.1
359 : edgomez 1.19 if (dec->interlacing && pMB->field_dct) {
360 : h 1.8 next_block = stride;
361 :     stride *= 2;
362 : Isibaar 1.1 }
363 : h 1.5
364 :     start_timer();
365 : edgomez 1.47
366 :     if (reduced_resolution)
367 :     {
368 :     next_block*=2;
369 :     copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
370 :     copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
371 :     copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
372 :     copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
373 :     copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
374 :     copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
375 :     }else{
376 :     transfer_16to8copy(pY_Cur, &data[0 * 64], stride);
377 :     transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride);
378 :     transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride);
379 :     transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride);
380 :     transfer_16to8copy(pU_Cur, &data[4 * 64], stride2);
381 :     transfer_16to8copy(pV_Cur, &data[5 * 64], stride2);
382 :     }
383 : h 1.5 stop_transfer_timer();
384 : Isibaar 1.1 }
385 :    
386 : edgomez 1.51 static void
387 :     decoder_mb_decode(DECODER * dec,
388 :     const uint32_t cbp,
389 :     Bitstream * bs,
390 :     uint8_t * pY_Cur,
391 :     uint8_t * pU_Cur,
392 :     uint8_t * pV_Cur,
393 :     const int reduced_resolution,
394 :     const MACROBLOCK * pMB)
395 :     {
396 :     DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
397 :    
398 :     int stride = dec->edged_width;
399 :     int next_block = stride * (reduced_resolution ? 16 : 8);
400 :     const int stride2 = stride/2;
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 :    
411 :     const get_inter_block_function_t get_inter_block = (dec->quant_type == 0)
412 :     ? get_inter_block_h263
413 :     : get_inter_block_mpeg;
414 :    
415 :     memset(&data[0], 0, 6*64*sizeof(int16_t)); /* clear */
416 : edgomez 1.51
417 :     for (i = 0; i < 6; i++) {
418 :    
419 :     if (cbp & (1 << (5 - i))) { /* coded */
420 :    
421 :    
422 : edgomez 1.61 /* Decode coeffs and dequantize on the fly */
423 : edgomez 1.51 start_timer();
424 : edgomez 1.61 get_inter_block(bs, &data[i*64], direction, iQuant, get_inter_matrix(dec->mpeg_quant_matrices));
425 : edgomez 1.51 stop_coding_timer();
426 :    
427 :     start_timer();
428 :     idct(&data[i * 64]);
429 :     stop_idct_timer();
430 :     }
431 :     }
432 : Isibaar 1.1
433 : edgomez 1.51 if (dec->interlacing && pMB->field_dct) {
434 :     next_block = stride;
435 :     stride *= 2;
436 :     }
437 : Isibaar 1.1
438 : edgomez 1.51 start_timer();
439 :     if (reduced_resolution) {
440 :     if (cbp & 32)
441 :     add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
442 :     if (cbp & 16)
443 :     add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
444 :     if (cbp & 8)
445 :     add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
446 :     if (cbp & 4)
447 :     add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
448 :     if (cbp & 2)
449 :     add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
450 :     if (cbp & 1)
451 :     add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
452 :     } else {
453 :     if (cbp & 32)
454 :     transfer_16to8add(pY_Cur, &data[0 * 64], stride);
455 :     if (cbp & 16)
456 :     transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride);
457 :     if (cbp & 8)
458 :     transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride);
459 :     if (cbp & 4)
460 :     transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride);
461 :     if (cbp & 2)
462 :     transfer_16to8add(pU_Cur, &data[4 * 64], stride2);
463 :     if (cbp & 1)
464 :     transfer_16to8add(pV_Cur, &data[5 * 64], stride2);
465 :     }
466 :     stop_transfer_timer();
467 :     }
468 : Isibaar 1.1
469 : edgomez 1.48 /* decode an inter macroblock */
470 : edgomez 1.51 static void
471 : edgomez 1.19 decoder_mbinter(DECODER * dec,
472 :     const MACROBLOCK * pMB,
473 :     const uint32_t x_pos,
474 :     const uint32_t y_pos,
475 :     const uint32_t cbp,
476 :     Bitstream * bs,
477 : edgomez 1.47 const uint32_t rounding,
478 : edgomez 1.51 const int reduced_resolution,
479 :     const int ref)
480 : Isibaar 1.1 {
481 : h 1.8 uint32_t stride = dec->edged_width;
482 :     uint32_t stride2 = stride / 2;
483 : edgomez 1.7 uint32_t i;
484 : edgomez 1.51
485 : h 1.5 uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
486 : edgomez 1.47
487 : Isibaar 1.1 int uv_dx, uv_dy;
488 : edgomez 1.47 VECTOR mv[4]; /* local copy of mvs */
489 :    
490 :     if (reduced_resolution) {
491 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
492 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
493 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
494 :     for (i = 0; i < 4; i++) {
495 :     mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x);
496 :     mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y);
497 :     }
498 :     } else {
499 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
500 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
501 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
502 :     for (i = 0; i < 4; i++)
503 :     mv[i] = pMB->mvs[i];
504 :     }
505 :    
506 : syskin 1.54 for (i = 0; i < 4; i++) {
507 :     /* clip to valid range */
508 :     int border = (int)(dec->mb_width - x_pos) << (5 + dec->quarterpel);
509 :     if (mv[i].x > border) {
510 :     DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
511 :     mv[i].x = border;
512 :     } else {
513 :     border = (-(int)x_pos-1) << (5 + dec->quarterpel);
514 :     if (mv[i].x < border) {
515 :     DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
516 :     mv[i].x = border;
517 :     }
518 :     }
519 :    
520 :     border = (int)(dec->mb_height - y_pos) << (5 + dec->quarterpel);
521 :     if (mv[i].y > border) {
522 :     DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
523 :     mv[i].y = border;
524 :     } else {
525 :     border = (-(int)y_pos-1) << (5 + dec->quarterpel);
526 :     if (mv[i].y < border) {
527 :     DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
528 :     mv[i].y = border;
529 :     }
530 :     }
531 :     }
532 :    
533 : edgomez 1.51 start_timer();
534 :    
535 :     if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */
536 :    
537 :     uv_dx = mv[0].x;
538 :     uv_dy = mv[0].y;
539 :     if (dec->quarterpel) {
540 :     uv_dx /= 2;
541 :     uv_dy /= 2;
542 :     }
543 : edgomez 1.47 uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
544 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
545 :    
546 :     if (reduced_resolution)
547 :     interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
548 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
549 :     else if (dec->quarterpel)
550 :     interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64,
551 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
552 :     mv[0].x, mv[0].y, stride, rounding);
553 : edgomez 1.47 else
554 : edgomez 1.51 interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos,
555 :     mv[0].x, mv[0].y, stride, rounding);
556 : Isibaar 1.1
557 : edgomez 1.47 } else { /* MODE_INTER4V */
558 :    
559 : edgomez 1.51 if(dec->quarterpel) {
560 :     uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2);
561 :     uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2);
562 :     } else {
563 :     uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x;
564 :     uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y;
565 :     }
566 : edgomez 1.47
567 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
568 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
569 : edgomez 1.47
570 : edgomez 1.51 if (reduced_resolution) {
571 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
572 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
573 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos,
574 : edgomez 1.51 mv[1].x, mv[1].y, stride, rounding);
575 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos, 32*y_pos + 16,
576 : edgomez 1.51 mv[2].x, mv[2].y, stride, rounding);
577 :     interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos + 16,
578 :     mv[3].x, mv[3].y, stride, rounding);
579 : edgomez 1.47 interpolate16x16_switch(dec->cur.u, dec->refn[0].u , 16 * x_pos, 16 * y_pos,
580 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
581 : edgomez 1.47 interpolate16x16_switch(dec->cur.v, dec->refn[0].v , 16 * x_pos, 16 * y_pos,
582 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
583 : edgomez 1.47
584 : edgomez 1.51 } else if (dec->quarterpel) {
585 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
586 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
587 :     mv[0].x, mv[0].y, stride, rounding);
588 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
589 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
590 :     mv[1].x, mv[1].y, stride, rounding);
591 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
592 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
593 :     mv[2].x, mv[2].y, stride, rounding);
594 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
595 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
596 :     mv[3].x, mv[3].y, stride, rounding);
597 :     } else {
598 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos,
599 :     mv[0].x, mv[0].y, stride, rounding);
600 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos,
601 :     mv[1].x, mv[1].y, stride, rounding);
602 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8,
603 :     mv[2].x, mv[2].y, stride, rounding);
604 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8,
605 :     mv[3].x, mv[3].y, stride, rounding);
606 : edgomez 1.47 }
607 :     }
608 :    
609 : edgomez 1.51 /* chroma */
610 :     if (reduced_resolution) {
611 :     interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos,
612 :     uv_dx, uv_dy, stride2, rounding);
613 :     interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos,
614 :     uv_dx, uv_dy, stride2, rounding);
615 :     } else {
616 :     interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos,
617 :     uv_dx, uv_dy, stride2, rounding);
618 :     interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos,
619 :     uv_dx, uv_dy, stride2, rounding);
620 : edgomez 1.47 }
621 : Isibaar 1.1
622 : edgomez 1.51 stop_comp_timer();
623 : edgomez 1.47
624 : edgomez 1.51 if (cbp)
625 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur,
626 :     reduced_resolution, pMB);
627 : edgomez 1.47 }
628 :    
629 :     static void
630 :     decoder_mbgmc(DECODER * dec,
631 :     MACROBLOCK * const pMB,
632 :     const uint32_t x_pos,
633 :     const uint32_t y_pos,
634 :     const uint32_t fcode,
635 :     const uint32_t cbp,
636 :     Bitstream * bs,
637 : edgomez 1.51 const uint32_t rounding)
638 : edgomez 1.47 {
639 :     const uint32_t stride = dec->edged_width;
640 :     const uint32_t stride2 = stride / 2;
641 : edgomez 1.51
642 : edgomez 1.47 uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
643 :     uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
644 :     uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
645 :    
646 : edgomez 1.51 NEW_GMC_DATA * gmc_data = &dec->new_gmc_data;
647 :    
648 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
649 : Isibaar 1.1
650 :     start_timer();
651 : edgomez 1.51
652 : edgomez 1.47 /* this is where the calculations are done */
653 :    
654 : edgomez 1.51 gmc_data->predict_16x16(gmc_data,
655 :     dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y,
656 :     stride, stride, x_pos, y_pos, rounding);
657 :    
658 :     gmc_data->predict_8x8(gmc_data,
659 :     dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u,
660 :     dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v,
661 :     stride2, stride2, x_pos, y_pos, rounding);
662 : edgomez 1.47
663 : edgomez 1.51 gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel);
664 : Isibaar 1.1
665 : edgomez 1.51 pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode);
666 :     pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode);
667 : edgomez 1.47
668 : edgomez 1.51 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
669 : Isibaar 1.1
670 : edgomez 1.51 stop_transfer_timer();
671 : Isibaar 1.1
672 : edgomez 1.51 if (cbp)
673 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
674 : Isibaar 1.1
675 :     }
676 :    
677 :    
678 : edgomez 1.51 static void
679 : edgomez 1.19 decoder_iframe(DECODER * dec,
680 : edgomez 1.51 Bitstream * bs,
681 :     int reduced_resolution,
682 :     int quant,
683 :     int intra_dc_threshold)
684 : Isibaar 1.1 {
685 : chenm001 1.26 uint32_t bound;
686 :     uint32_t x, y;
687 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
688 :     uint32_t mb_height = dec->mb_height;
689 : edgomez 1.51
690 :     if (reduced_resolution) {
691 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
692 :     mb_height = (dec->height + 31) / 32;
693 :     }
694 : chenm001 1.25
695 : chenm001 1.26 bound = 0;
696 : edgomez 1.7
697 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
698 :     for (x = 0; x < mb_width; x++) {
699 : chenm001 1.26 MACROBLOCK *mb;
700 : Isibaar 1.1 uint32_t mcbpc;
701 :     uint32_t cbpc;
702 :     uint32_t acpred_flag;
703 :     uint32_t cbpy;
704 :     uint32_t cbp;
705 :    
706 : chenm001 1.26 while (BitstreamShowBits(bs, 9) == 1)
707 :     BitstreamSkip(bs, 9);
708 :    
709 :     if (check_resync_marker(bs, 0))
710 :     {
711 : edgomez 1.51 bound = read_video_packet_header(bs, dec, 0,
712 : edgomez 1.47 &quant, NULL, NULL, &intra_dc_threshold);
713 :     x = bound % mb_width;
714 :     y = bound / mb_width;
715 : chenm001 1.26 }
716 :     mb = &dec->mbs[y * dec->mb_width + x];
717 :    
718 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
719 : chenm001 1.26
720 : Isibaar 1.1 mcbpc = get_mcbpc_intra(bs);
721 :     mb->mode = mcbpc & 7;
722 :     cbpc = (mcbpc >> 4);
723 :    
724 :     acpred_flag = BitstreamGetBit(bs);
725 :    
726 :     cbpy = get_cbpy(bs, 1);
727 :     cbp = (cbpy << 2) | cbpc;
728 :    
729 : edgomez 1.19 if (mb->mode == MODE_INTRA_Q) {
730 :     quant += dquant_table[BitstreamGetBits(bs, 2)];
731 :     if (quant > 31) {
732 : Isibaar 1.1 quant = 31;
733 : edgomez 1.19 } else if (quant < 1) {
734 : Isibaar 1.1 quant = 1;
735 :     }
736 :     }
737 :     mb->quant = quant;
738 : chenm001 1.30 mb->mvs[0].x = mb->mvs[0].y =
739 :     mb->mvs[1].x = mb->mvs[1].y =
740 :     mb->mvs[2].x = mb->mvs[2].y =
741 :     mb->mvs[3].x = mb->mvs[3].y =0;
742 : h 1.5
743 : edgomez 1.19 if (dec->interlacing) {
744 : h 1.5 mb->field_dct = BitstreamGetBit(bs);
745 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct);
746 : h 1.5 }
747 : Isibaar 1.1
748 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
749 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
750 :    
751 : Isibaar 1.1 }
752 : albeu 1.32 if(dec->out_frm)
753 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width);
754 : Isibaar 1.1 }
755 : edgomez 1.7
756 : Isibaar 1.1 }
757 :    
758 :    
759 : edgomez 1.51 static void
760 : edgomez 1.19 get_motion_vector(DECODER * dec,
761 : edgomez 1.51 Bitstream * bs,
762 :     int x,
763 :     int y,
764 :     int k,
765 :     VECTOR * ret_mv,
766 :     int fcode,
767 :     const int bound)
768 : Isibaar 1.1 {
769 : edgomez 1.7
770 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
771 :     const int high = (32 * scale_fac) - 1;
772 :     const int low = ((-32) * scale_fac);
773 :     const int range = (64 * scale_fac);
774 : Isibaar 1.1
775 : edgomez 1.51 const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k);
776 : edgomez 1.47 VECTOR mv;
777 : Isibaar 1.1
778 : edgomez 1.47 mv.x = get_mv(bs, fcode);
779 :     mv.y = get_mv(bs, fcode);
780 : edgomez 1.19
781 : 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);
782 : chenm001 1.26
783 : edgomez 1.47 mv.x += pmv.x;
784 :     mv.y += pmv.y;
785 : Isibaar 1.1
786 : edgomez 1.47 if (mv.x < low) {
787 :     mv.x += range;
788 :     } else if (mv.x > high) {
789 :     mv.x -= range;
790 : Isibaar 1.1 }
791 :    
792 : edgomez 1.47 if (mv.y < low) {
793 :     mv.y += range;
794 :     } else if (mv.y > high) {
795 :     mv.y -= range;
796 : Isibaar 1.1 }
797 :    
798 : edgomez 1.51 ret_mv->x = mv.x;
799 :     ret_mv->y = mv.y;
800 :     }
801 : Isibaar 1.1
802 : edgomez 1.47 /* for P_VOP set gmc_warp to NULL */
803 : edgomez 1.51 static void
804 : edgomez 1.19 decoder_pframe(DECODER * dec,
805 : edgomez 1.51 Bitstream * bs,
806 :     int rounding,
807 :     int reduced_resolution,
808 :     int quant,
809 :     int fcode,
810 :     int intra_dc_threshold,
811 :     const WARPPOINTS *const gmc_warp)
812 : Isibaar 1.1 {
813 :     uint32_t x, y;
814 : chenm001 1.26 uint32_t bound;
815 : albeu 1.32 int cp_mb, st_mb;
816 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
817 :     uint32_t mb_height = dec->mb_height;
818 : edgomez 1.51
819 :     if (reduced_resolution) {
820 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
821 :     mb_height = (dec->height + 31) / 32;
822 :     }
823 : Isibaar 1.1
824 : edgomez 1.57 if (!dec->is_edged[0]) {
825 :     start_timer();
826 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
827 :     dec->width, dec->height, dec->bs_version);
828 :     dec->is_edged[0] = 1;
829 :     stop_edges_timer();
830 :     }
831 : Isibaar 1.1
832 : edgomez 1.51 if (gmc_warp) {
833 :     /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
834 :     generate_GMCparameters( dec->sprite_warping_points,
835 :     dec->sprite_warping_accuracy, gmc_warp,
836 :     dec->width, dec->height, &dec->new_gmc_data);
837 : edgomez 1.47
838 : edgomez 1.51 /* image warping is done block-based in decoder_mbgmc(), now */
839 : edgomez 1.47 }
840 :    
841 : chenm001 1.26 bound = 0;
842 :    
843 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
844 : albeu 1.32 cp_mb = st_mb = 0;
845 : edgomez 1.47 for (x = 0; x < mb_width; x++) {
846 : chenm001 1.26 MACROBLOCK *mb;
847 :    
848 : edgomez 1.48 /* skip stuffing */
849 : chenm001 1.26 while (BitstreamShowBits(bs, 10) == 1)
850 :     BitstreamSkip(bs, 10);
851 :    
852 : edgomez 1.51 if (check_resync_marker(bs, fcode - 1)) {
853 :     bound = read_video_packet_header(bs, dec, fcode - 1,
854 : edgomez 1.47 &quant, &fcode, NULL, &intra_dc_threshold);
855 :     x = bound % mb_width;
856 :     y = bound / mb_width;
857 : chenm001 1.26 }
858 :     mb = &dec->mbs[y * dec->mb_width + x];
859 :    
860 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
861 : suxen_drol 1.23
862 : edgomez 1.51 if (!(BitstreamGetBit(bs))) { /* block _is_ coded */
863 :     uint32_t mcbpc, cbpc, cbpy, cbp;
864 :     uint32_t intra, acpred_flag = 0;
865 : edgomez 1.48 int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */
866 : Isibaar 1.1
867 : albeu 1.32 cp_mb++;
868 : Isibaar 1.1 mcbpc = get_mcbpc_inter(bs);
869 :     mb->mode = mcbpc & 7;
870 :     cbpc = (mcbpc >> 4);
871 : edgomez 1.51
872 :     DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode);
873 :     DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc);
874 : Isibaar 1.1
875 :     intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q);
876 : edgomez 1.19
877 : edgomez 1.47 if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q))
878 :     mcsel = BitstreamGetBit(bs);
879 : edgomez 1.51 else if (intra)
880 :     acpred_flag = BitstreamGetBit(bs);
881 : edgomez 1.47
882 : chenm001 1.26 cbpy = get_cbpy(bs, intra);
883 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel);
884 : chenm001 1.25
885 : Isibaar 1.1 cbp = (cbpy << 2) | cbpc;
886 :    
887 : edgomez 1.19 if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) {
888 : chenm001 1.26 int dquant = dquant_table[BitstreamGetBits(bs, 2)];
889 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant);
890 : chenm001 1.26 quant += dquant;
891 : edgomez 1.19 if (quant > 31) {
892 : Isibaar 1.1 quant = 31;
893 : chenm001 1.26 } else if (quant < 1) {
894 : Isibaar 1.1 quant = 1;
895 :     }
896 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant);
897 : Isibaar 1.1 }
898 :     mb->quant = quant;
899 : h 1.5
900 : edgomez 1.19 if (dec->interlacing) {
901 : h 1.37 if (cbp || intra) {
902 :     mb->field_dct = BitstreamGetBit(bs);
903 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
904 : h 1.37 }
905 : h 1.5
906 : edgomez 1.51 if ((mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) && !mcsel) {
907 : h 1.5 mb->field_pred = BitstreamGetBit(bs);
908 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
909 : h 1.5
910 : edgomez 1.19 if (mb->field_pred) {
911 : h 1.5 mb->field_for_top = BitstreamGetBit(bs);
912 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
913 : h 1.5 mb->field_for_bot = BitstreamGetBit(bs);
914 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
915 : h 1.5 }
916 :     }
917 :     }
918 : edgomez 1.51
919 : edgomez 1.47 if (mcsel) {
920 : edgomez 1.51 decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding);
921 : edgomez 1.47 continue;
922 :    
923 :     } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
924 : h 1.5
925 : edgomez 1.19 if (dec->interlacing && mb->field_pred) {
926 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
927 :     get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound);
928 : edgomez 1.19 } else {
929 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
930 : edgomez 1.47 mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
931 : h 1.5 }
932 : chl 1.35 } else if (mb->mode == MODE_INTER4V ) {
933 : chenm001 1.26 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
934 :     get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound);
935 :     get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound);
936 :     get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound);
937 : edgomez 1.51 } else { /* MODE_INTRA, MODE_INTRA_Q */
938 :     mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
939 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
940 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
941 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
942 : Isibaar 1.1 continue;
943 :     }
944 :    
945 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, cbp, bs,
946 :     rounding, reduced_resolution, 0);
947 : edgomez 1.47
948 : edgomez 1.51 } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */
949 : edgomez 1.47 mb->mode = MODE_NOT_CODED_GMC;
950 : edgomez 1.51 mb->quant = quant;
951 :     decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding);
952 : edgomez 1.39
953 : edgomez 1.47 if(dec->out_frm && cp_mb > 0) {
954 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
955 :     cp_mb = 0;
956 : edgomez 1.47 }
957 :     st_mb = x+1;
958 : edgomez 1.51 } else { /* not coded P_VOP macroblock */
959 : chenm001 1.14 mb->mode = MODE_NOT_CODED;
960 : edgomez 1.51 mb->quant = quant;
961 : edgomez 1.47
962 : Isibaar 1.1 mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
963 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
964 :    
965 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, 0, bs,
966 :     rounding, reduced_resolution, 0);
967 : edgomez 1.47
968 : albeu 1.32 if(dec->out_frm && cp_mb > 0) {
969 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
970 :     cp_mb = 0;
971 : albeu 1.32 }
972 :     st_mb = x+1;
973 : Isibaar 1.1 }
974 :     }
975 : edgomez 1.51
976 : albeu 1.32 if(dec->out_frm && cp_mb > 0)
977 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
978 : Isibaar 1.1 }
979 :     }
980 :    
981 : edgomez 1.47
982 : edgomez 1.48 /* decode B-frame motion vector */
983 : edgomez 1.51 static void
984 :     get_b_motion_vector(Bitstream * bs,
985 : edgomez 1.47 VECTOR * mv,
986 :     int fcode,
987 : edgomez 1.51 const VECTOR pmv,
988 :     const DECODER * const dec,
989 :     const int x, const int y)
990 : chenm001 1.14 {
991 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
992 :     const int high = (32 * scale_fac) - 1;
993 :     const int low = ((-32) * scale_fac);
994 :     const int range = (64 * scale_fac);
995 : edgomez 1.7
996 : edgomez 1.51 int mv_x = get_mv(bs, fcode);
997 :     int mv_y = get_mv(bs, fcode);
998 : Isibaar 1.1
999 : edgomez 1.51 mv_x += pmv.x;
1000 :     mv_y += pmv.y;
1001 : albeu 1.32
1002 : edgomez 1.51 if (mv_x < low)
1003 : edgomez 1.47 mv_x += range;
1004 : edgomez 1.51 else if (mv_x > high)
1005 : edgomez 1.47 mv_x -= range;
1006 :    
1007 : edgomez 1.51 if (mv_y < low)
1008 : edgomez 1.47 mv_y += range;
1009 : edgomez 1.51 else if (mv_y > high)
1010 : edgomez 1.47 mv_y -= range;
1011 :    
1012 : edgomez 1.51 mv->x = mv_x;
1013 :     mv->y = mv_y;
1014 : edgomez 1.47 }
1015 :    
1016 : edgomez 1.51 /* decode an B-frame direct & interpolate macroblock */
1017 :     static void
1018 : edgomez 1.47 decoder_bf_interpolate_mbinter(DECODER * dec,
1019 : edgomez 1.51 IMAGE forward,
1020 :     IMAGE backward,
1021 :     const MACROBLOCK * pMB,
1022 :     const uint32_t x_pos,
1023 :     const uint32_t y_pos,
1024 :     Bitstream * bs,
1025 :     const int direct)
1026 : edgomez 1.47 {
1027 :     uint32_t stride = dec->edged_width;
1028 :     uint32_t stride2 = stride / 2;
1029 :     int uv_dx, uv_dy;
1030 :     int b_uv_dx, b_uv_dy;
1031 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
1032 : edgomez 1.51 const uint32_t cbp = pMB->cbp;
1033 : edgomez 1.47
1034 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
1035 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
1036 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
1037 :    
1038 : edgomez 1.51 if (!direct) {
1039 : edgomez 1.47 uv_dx = pMB->mvs[0].x;
1040 :     uv_dy = pMB->mvs[0].y;
1041 :    
1042 :     b_uv_dx = pMB->b_mvs[0].x;
1043 :     b_uv_dy = pMB->b_mvs[0].y;
1044 :    
1045 : edgomez 1.51 if (dec->quarterpel) {
1046 : edgomez 1.47 uv_dx /= 2;
1047 :     uv_dy /= 2;
1048 :     b_uv_dx /= 2;
1049 :     b_uv_dy /= 2;
1050 :     }
1051 :    
1052 :     uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
1053 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
1054 :    
1055 :     b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3];
1056 :     b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3];
1057 : edgomez 1.51
1058 : edgomez 1.47 } else {
1059 : edgomez 1.51 if(dec->quarterpel) {
1060 :     uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2);
1061 :     uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2);
1062 :     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);
1063 :     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);
1064 :     } else {
1065 :     uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x;
1066 :     uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y;
1067 :     b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x;
1068 :     b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y;
1069 :     }
1070 : edgomez 1.47
1071 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
1072 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
1073 :     b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf];
1074 :     b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf];
1075 : edgomez 1.47 }
1076 :    
1077 :     start_timer();
1078 :     if(dec->quarterpel) {
1079 : edgomez 1.51 if(!direct) {
1080 : edgomez 1.47 interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1081 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1082 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1083 :     } else {
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, 16*y_pos,
1086 :     pMB->mvs[0].x, pMB->mvs[0].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 + 8, 16*y_pos,
1089 :     pMB->mvs[1].x, pMB->mvs[1].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, 16*y_pos + 8,
1092 :     pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1093 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1094 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1095 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1096 : edgomez 1.47 }
1097 : edgomez 1.51 } else {
1098 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos,
1099 : edgomez 1.51 pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1100 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos,
1101 : edgomez 1.51 pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1102 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8,
1103 : edgomez 1.51 pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1104 :     interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos + 8,
1105 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1106 : edgomez 1.47 }
1107 :    
1108 :     interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx,
1109 : edgomez 1.51 uv_dy, stride2, 0);
1110 : edgomez 1.47 interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx,
1111 : edgomez 1.51 uv_dy, stride2, 0);
1112 : edgomez 1.47
1113 :    
1114 :     if(dec->quarterpel) {
1115 : edgomez 1.51 if(!direct) {
1116 : edgomez 1.47 interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1117 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1118 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1119 :     } else {
1120 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1121 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1122 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1123 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1124 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1125 :     pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1126 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1127 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8,
1128 :     pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1129 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1130 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8,
1131 :     pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1132 : edgomez 1.47 }
1133 : edgomez 1.51 } else {
1134 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos,
1135 : edgomez 1.51 pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1136 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1137 : edgomez 1.51 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1138 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos,
1139 : edgomez 1.51 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1140 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1141 : edgomez 1.51 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1142 : edgomez 1.47 }
1143 :    
1144 :     interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos,
1145 : edgomez 1.51 b_uv_dx, b_uv_dy, stride2, 0);
1146 : edgomez 1.47 interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos,
1147 : edgomez 1.51 b_uv_dx, b_uv_dy, stride2, 0);
1148 : edgomez 1.47
1149 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1150 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1151 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos,
1152 :     stride, 1, 8);
1153 :    
1154 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1155 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1156 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1157 :     stride, 1, 8);
1158 :    
1159 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1160 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1161 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1162 :     stride, 1, 8);
1163 :    
1164 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1165 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1166 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1167 :     stride, 1, 8);
1168 :    
1169 :     interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1170 :     dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1171 :     dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos,
1172 :     stride2, 1, 8);
1173 :    
1174 :     interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1175 :     dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1176 :     dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos,
1177 :     stride2, 1, 8);
1178 :    
1179 :     stop_comp_timer();
1180 :    
1181 : edgomez 1.51 if (cbp)
1182 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
1183 : edgomez 1.47 }
1184 :    
1185 : edgomez 1.48 /* for decode B-frame dbquant */
1186 : edgomez 1.51 static __inline int32_t
1187 : edgomez 1.47 get_dbquant(Bitstream * bs)
1188 :     {
1189 : edgomez 1.51 if (!BitstreamGetBit(bs)) /* '0' */
1190 : edgomez 1.47 return (0);
1191 : edgomez 1.51 else if (!BitstreamGetBit(bs)) /* '10' */
1192 : edgomez 1.47 return (-2);
1193 : edgomez 1.51 else /* '11' */
1194 : edgomez 1.48 return (2);
1195 : edgomez 1.47 }
1196 :    
1197 : edgomez 1.48 /*
1198 : edgomez 1.51 * decode B-frame mb_type
1199 :     * bit ret_value
1200 :     * 1 0
1201 :     * 01 1
1202 :     * 001 2
1203 :     * 0001 3
1204 : edgomez 1.48 */
1205 : edgomez 1.51 static int32_t __inline
1206 : edgomez 1.47 get_mbtype(Bitstream * bs)
1207 :     {
1208 :     int32_t mb_type;
1209 :    
1210 : edgomez 1.51 for (mb_type = 0; mb_type <= 3; mb_type++)
1211 : edgomez 1.47 if (BitstreamGetBit(bs))
1212 : edgomez 1.51 return (mb_type);
1213 : edgomez 1.47
1214 : edgomez 1.51 return -1;
1215 : edgomez 1.47 }
1216 :    
1217 : edgomez 1.51 static void
1218 : edgomez 1.47 decoder_bframe(DECODER * dec,
1219 : edgomez 1.51 Bitstream * bs,
1220 :     int quant,
1221 :     int fcode_forward,
1222 :     int fcode_backward)
1223 : edgomez 1.47 {
1224 :     uint32_t x, y;
1225 :     VECTOR mv;
1226 :     const VECTOR zeromv = {0,0};
1227 : edgomez 1.51 int i;
1228 : edgomez 1.47
1229 : edgomez 1.57 if (!dec->is_edged[0]) {
1230 :     start_timer();
1231 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
1232 :     dec->width, dec->height, dec->bs_version);
1233 :     dec->is_edged[0] = 1;
1234 :     stop_edges_timer();
1235 :     }
1236 :    
1237 :     if (!dec->is_edged[1]) {
1238 :     start_timer();
1239 :     image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height,
1240 :     dec->width, dec->height, dec->bs_version);
1241 :     dec->is_edged[1] = 1;
1242 :     stop_edges_timer();
1243 :     }
1244 : edgomez 1.47
1245 :     for (y = 0; y < dec->mb_height; y++) {
1246 : edgomez 1.48 /* Initialize Pred Motion Vector */
1247 : edgomez 1.47 dec->p_fmv = dec->p_bmv = zeromv;
1248 :     for (x = 0; x < dec->mb_width; x++) {
1249 :     MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x];
1250 :     MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x];
1251 : edgomez 1.51 const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward;
1252 :     uint32_t intra_dc_threshold; /* fake variable */
1253 :    
1254 :     if (check_resync_marker(bs, fcode_max - 1)) {
1255 :     int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant,
1256 :     &fcode_forward, &fcode_backward, &intra_dc_threshold);
1257 :     x = bound % dec->mb_width;
1258 :     y = bound / dec->mb_width;
1259 :     /* reset predicted macroblocks */
1260 :     dec->p_fmv = dec->p_bmv = zeromv;
1261 :     }
1262 : edgomez 1.47
1263 :     mv =
1264 :     mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] =
1265 :     mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv;
1266 : edgomez 1.51 mb->quant = quant;
1267 : edgomez 1.47
1268 : edgomez 1.48 /*
1269 : edgomez 1.51 * skip if the co-located P_VOP macroblock is not coded
1270 : edgomez 1.48 * if not codec in co-located S_VOP macroblock is _not_
1271 :     * automatically skipped
1272 :     */
1273 : edgomez 1.47
1274 :     if (last_mb->mode == MODE_NOT_CODED) {
1275 :     mb->cbp = 0;
1276 : edgomez 1.51 mb->mode = MODE_FORWARD;
1277 :     decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1278 : edgomez 1.47 continue;
1279 :     }
1280 :    
1281 : edgomez 1.48 if (!BitstreamGetBit(bs)) { /* modb=='0' */
1282 : edgomez 1.47 const uint8_t modb2 = BitstreamGetBit(bs);
1283 :    
1284 : edgomez 1.51 mb->mode = get_mbtype(bs);
1285 : edgomez 1.47
1286 : edgomez 1.51 if (!modb2) /* modb=='00' */
1287 : edgomez 1.47 mb->cbp = BitstreamGetBits(bs, 6);
1288 : edgomez 1.51 else
1289 : edgomez 1.47 mb->cbp = 0;
1290 : edgomez 1.51
1291 :     if (mb->mode && mb->cbp) {
1292 : edgomez 1.47 quant += get_dbquant(bs);
1293 : edgomez 1.51 if (quant > 31)
1294 : edgomez 1.47 quant = 31;
1295 : edgomez 1.51 else if (quant < 1)
1296 : edgomez 1.47 quant = 1;
1297 : edgomez 1.51 }
1298 :     mb->quant = quant;
1299 :    
1300 :     if (dec->interlacing) {
1301 :     if (mb->cbp) {
1302 :     mb->field_dct = BitstreamGetBit(bs);
1303 :     DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
1304 :     }
1305 :    
1306 :     if (mb->mode) {
1307 :     mb->field_pred = BitstreamGetBit(bs);
1308 :     DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
1309 :    
1310 :     if (mb->field_pred) {
1311 :     mb->field_for_top = BitstreamGetBit(bs);
1312 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
1313 :     mb->field_for_bot = BitstreamGetBit(bs);
1314 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
1315 :     }
1316 : edgomez 1.47 }
1317 :     }
1318 : edgomez 1.51
1319 : edgomez 1.47 } else {
1320 : edgomez 1.51 mb->mode = MODE_DIRECT_NONE_MV;
1321 : edgomez 1.47 mb->cbp = 0;
1322 :     }
1323 :    
1324 : edgomez 1.51 switch (mb->mode) {
1325 : edgomez 1.47 case MODE_DIRECT:
1326 : edgomez 1.51 get_b_motion_vector(bs, &mv, 1, zeromv, dec, x, y);
1327 : edgomez 1.47
1328 :     case MODE_DIRECT_NONE_MV:
1329 : edgomez 1.51 for (i = 0; i < 4; i++) {
1330 : edgomez 1.58 mb->mvs[i].x = last_mb->mvs[i].x*dec->time_bp/dec->time_pp + mv.x;
1331 :     mb->mvs[i].y = last_mb->mvs[i].y*dec->time_bp/dec->time_pp + mv.y;
1332 :    
1333 :     mb->b_mvs[i].x = (mv.x)
1334 :     ? mb->mvs[i].x - last_mb->mvs[i].x
1335 :     : last_mb->mvs[i].x*(dec->time_bp - dec->time_pp)/dec->time_pp;
1336 :     mb->b_mvs[i].y = (mv.y)
1337 :     ? mb->mvs[i].y - last_mb->mvs[i].y
1338 :     : last_mb->mvs[i].y*(dec->time_bp - dec->time_pp)/dec->time_pp;
1339 : edgomez 1.47 }
1340 : edgomez 1.51
1341 : edgomez 1.47 decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1342 : edgomez 1.51 mb, x, y, bs, 1);
1343 : edgomez 1.47 break;
1344 :    
1345 :     case MODE_INTERPOLATE:
1346 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1347 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1348 :    
1349 : edgomez 1.51 get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1350 :     dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0];
1351 : edgomez 1.47
1352 :     decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1353 : edgomez 1.51 mb, x, y, bs, 0);
1354 : edgomez 1.47 break;
1355 :    
1356 :     case MODE_BACKWARD:
1357 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1358 : edgomez 1.47 dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1359 :    
1360 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0);
1361 : edgomez 1.47 break;
1362 :    
1363 :     case MODE_FORWARD:
1364 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1365 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1366 :    
1367 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1368 : edgomez 1.47 break;
1369 :    
1370 :     default:
1371 : edgomez 1.51 DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode);
1372 : edgomez 1.47 }
1373 : edgomez 1.48 } /* End of for */
1374 :     }
1375 : edgomez 1.47 }
1376 :    
1377 :     /* perform post processing if necessary, and output the image */
1378 : edgomez 1.51 void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs,
1379 :     xvid_dec_frame_t * frame, xvid_dec_stats_t * stats,
1380 :     int coding_type, int quant)
1381 : edgomez 1.47 {
1382 : suxen_drol 1.55 const int brightness = XVID_VERSION_MINOR(frame->version) >= 1 ? frame->brightness : 0;
1383 :    
1384 : edgomez 1.51 if (dec->cartoon_mode)
1385 :     frame->general &= ~XVID_FILMEFFECT;
1386 : edgomez 1.47
1387 : suxen_drol 1.55 if ((frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) || brightness!=0)
1388 : suxen_drol 1.52 && mbs != NULL) /* post process */
1389 : edgomez 1.47 {
1390 :     /* note: image is stored to tmp */
1391 :     image_copy(&dec->tmp, img, dec->edged_width, dec->height);
1392 : edgomez 1.51 image_postproc(&dec->postproc, &dec->tmp, dec->edged_width,
1393 :     mbs, dec->mb_width, dec->mb_height, dec->mb_width,
1394 : suxen_drol 1.55 frame->general, brightness, dec->frames, (coding_type == B_VOP));
1395 : edgomez 1.47 img = &dec->tmp;
1396 :     }
1397 :    
1398 :     image_output(img, dec->width, dec->height,
1399 : edgomez 1.51 dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride,
1400 :     frame->output.csp, dec->interlacing);
1401 :    
1402 :     if (stats) {
1403 :     stats->type = coding2type(coding_type);
1404 :     stats->data.vop.time_base = (int)dec->time_base;
1405 :     stats->data.vop.time_increment = 0; /* XXX: todo */
1406 :     stats->data.vop.qscale_stride = dec->mb_width;
1407 :     stats->data.vop.qscale = dec->qscale;
1408 :     if (stats->data.vop.qscale != NULL && mbs != NULL) {
1409 :     int i;
1410 :     for (i = 0; i < dec->mb_width*dec->mb_height; i++)
1411 :     stats->data.vop.qscale[i] = mbs[i].quant;
1412 :     } else
1413 :     stats->data.vop.qscale = NULL;
1414 :     }
1415 : edgomez 1.47 }
1416 :    
1417 :    
1418 :     int
1419 :     decoder_decode(DECODER * dec,
1420 : edgomez 1.51 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats)
1421 : edgomez 1.47 {
1422 :    
1423 :     Bitstream bs;
1424 :     uint32_t rounding;
1425 :     uint32_t reduced_resolution;
1426 : edgomez 1.51 uint32_t quant = 2;
1427 : edgomez 1.47 uint32_t fcode_forward;
1428 :     uint32_t fcode_backward;
1429 :     uint32_t intra_dc_threshold;
1430 :     WARPPOINTS gmc_warp;
1431 : edgomez 1.51 int coding_type;
1432 :     int success, output, seen_something;
1433 :    
1434 :     if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */
1435 :     return XVID_ERR_VERSION;
1436 : edgomez 1.47
1437 :     start_global_timer();
1438 :    
1439 : edgomez 1.51 dec->low_delay_default = (frame->general & XVID_LOWDELAY);
1440 :     if ((frame->general & XVID_DISCONTINUITY))
1441 : edgomez 1.47 dec->frames = 0;
1442 : edgomez 1.51 dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL;
1443 : edgomez 1.47
1444 : edgomez 1.51 if (frame->length < 0) { /* decoder flush */
1445 :     int ret;
1446 :     /* if not decoding "low_delay/packed", and this isn't low_delay and
1447 :     we have a reference frame, then outout the reference frame */
1448 :     if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) {
1449 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1450 :     dec->frames = 0;
1451 :     ret = 0;
1452 :     } else {
1453 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1454 :     ret = XVID_ERR_END;
1455 : edgomez 1.47 }
1456 :    
1457 :     emms();
1458 :     stop_global_timer();
1459 : edgomez 1.51 return ret;
1460 : edgomez 1.47 }
1461 : edgomez 1.19
1462 : Isibaar 1.1 BitstreamInit(&bs, frame->bitstream, frame->length);
1463 :    
1464 : edgomez 1.48 /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */
1465 : edgomez 1.47 if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f)
1466 :     {
1467 :     image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width,
1468 : edgomez 1.51 (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing);
1469 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1470 : edgomez 1.47 emms();
1471 : edgomez 1.51 return 1; /* one byte consumed */
1472 : edgomez 1.47 }
1473 :    
1474 : edgomez 1.51 success = 0;
1475 :     output = 0;
1476 :     seen_something = 0;
1477 :    
1478 : edgomez 1.47 repeat:
1479 :    
1480 : edgomez 1.51 coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution,
1481 : edgomez 1.47 &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp);
1482 :    
1483 : edgomez 1.51 DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n",
1484 :     coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp);
1485 : Isibaar 1.1
1486 : edgomez 1.51 if (coding_type == -1) { /* nothing */
1487 : edgomez 1.47 if (success) goto done;
1488 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1489 : edgomez 1.47 emms();
1490 : edgomez 1.51 return BitstreamPos(&bs)/8;
1491 : Isibaar 1.1 }
1492 :    
1493 : edgomez 1.51 if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */
1494 :    
1495 :     if (coding_type == -3)
1496 : edgomez 1.47 decoder_resize(dec);
1497 : edgomez 1.51
1498 :     if (stats) {
1499 :     stats->type = XVID_TYPE_VOL;
1500 : edgomez 1.47 stats->data.vol.general = 0;
1501 : edgomez 1.51 /*XXX: if (dec->interlacing)
1502 :     stats->data.vol.general |= ++INTERLACING; */
1503 : edgomez 1.47 stats->data.vol.width = dec->width;
1504 :     stats->data.vol.height = dec->height;
1505 : edgomez 1.51 stats->data.vol.par = dec->aspect_ratio;
1506 : edgomez 1.47 stats->data.vol.par_width = dec->par_width;
1507 :     stats->data.vol.par_height = dec->par_height;
1508 :     emms();
1509 : edgomez 1.51 return BitstreamPos(&bs)/8; /* number of bytes consumed */
1510 : edgomez 1.47 }
1511 : syskin 1.56 goto repeat;
1512 :     }
1513 :    
1514 :     if(dec->frames == 0 && coding_type != I_VOP) {
1515 :     /* 1st frame is not an i-vop */
1516 : edgomez 1.47 goto repeat;
1517 : edgomez 1.51 }
1518 : edgomez 1.47
1519 : 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 */
1520 : edgomez 1.47
1521 :     /* packed_mode: special-N_VOP treament */
1522 : edgomez 1.51 if (dec->packed_mode && coding_type == N_VOP) {
1523 :     if (dec->low_delay_default && dec->frames > 0) {
1524 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1525 : edgomez 1.47 output = 1;
1526 :     }
1527 :     /* ignore otherwise */
1528 : edgomez 1.51 } else if (coding_type != B_VOP) {
1529 :     switch(coding_type) {
1530 : edgomez 1.47 case I_VOP :
1531 :     decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold);
1532 :     break;
1533 :     case P_VOP :
1534 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1535 : edgomez 1.47 fcode_forward, intra_dc_threshold, NULL);
1536 :     break;
1537 :     case S_VOP :
1538 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1539 : edgomez 1.47 fcode_forward, intra_dc_threshold, &gmc_warp);
1540 :     break;
1541 :     case N_VOP :
1542 : edgomez 1.51 /* XXX: not_coded vops are not used for forward prediction */
1543 :     /* we should not swap(last_mbs,mbs) */
1544 : edgomez 1.47 image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height);
1545 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */
1546 : edgomez 1.47 break;
1547 :     }
1548 :    
1549 : edgomez 1.51 if (reduced_resolution) {
1550 : edgomez 1.47 image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs,
1551 :     (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width,
1552 : edgomez 1.51 16, 0);
1553 : edgomez 1.47 }
1554 : Isibaar 1.1
1555 : edgomez 1.47 /* note: for packed_mode, output is performed when the special-N_VOP is decoded */
1556 : edgomez 1.51 if (!(dec->low_delay_default && dec->packed_mode)) {
1557 :     if (dec->low_delay) {
1558 :     decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1559 : edgomez 1.47 output = 1;
1560 : edgomez 1.51 } else if (dec->frames > 0) { /* is the reference frame valid? */
1561 : edgomez 1.47 /* output the reference frame */
1562 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1563 : edgomez 1.47 output = 1;
1564 :     }
1565 :     }
1566 : Isibaar 1.18
1567 : chenm001 1.14 image_swap(&dec->refn[0], &dec->refn[1]);
1568 : edgomez 1.57 dec->is_edged[1] = dec->is_edged[0];
1569 : chenm001 1.14 image_swap(&dec->cur, &dec->refn[0]);
1570 : edgomez 1.57 dec->is_edged[0] = 0;
1571 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs);
1572 : edgomez 1.47 dec->last_reduced_resolution = reduced_resolution;
1573 : edgomez 1.51 dec->last_coding_type = coding_type;
1574 : edgomez 1.47
1575 :     dec->frames++;
1576 :     seen_something = 1;
1577 : chenm001 1.31
1578 : edgomez 1.51 } else { /* B_VOP */
1579 : edgomez 1.47
1580 : edgomez 1.51 if (dec->low_delay) {
1581 :     DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n");
1582 : syskin 1.60 dec->low_delay = 0;
1583 : edgomez 1.47 }
1584 :    
1585 : edgomez 1.51 if (dec->frames < 2) {
1586 : edgomez 1.47 /* attemping to decode a bvop without atleast 2 reference frames */
1587 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1588 :     "broken b-frame, mising ref frames");
1589 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1590 :     } else if (dec->time_pp <= dec->time_bp) {
1591 :     /* this occurs when dx50_bvop_compatibility==0 sequences are
1592 : edgomez 1.47 decoded in vfw. */
1593 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1594 :     "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp);
1595 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1596 :     } else {
1597 : edgomez 1.47 decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward);
1598 : edgomez 1.51 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1599 : edgomez 1.47 }
1600 :    
1601 :     output = 1;
1602 :     dec->frames++;
1603 : chenm001 1.14 }
1604 :    
1605 : edgomez 1.51 #if 0 /* Avoids to read to much data because of 32bit reads in our BS functions */
1606 :     BitstreamByteAlign(&bs);
1607 :     #endif
1608 : edgomez 1.47
1609 :     /* low_delay_default mode: repeat in packed_mode */
1610 : edgomez 1.51 if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) {
1611 : edgomez 1.47 success = 1;
1612 :     goto repeat;
1613 :     }
1614 :    
1615 :     done :
1616 :    
1617 :     /* low_delay_default mode: if we've gotten here without outputting anything,
1618 :     then output the recently decoded frame, or print an error message */
1619 : edgomez 1.51 if (dec->low_delay_default && output == 0) {
1620 :     if (dec->packed_mode && seen_something) {
1621 : edgomez 1.47 /* output the recently decoded frame */
1622 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1623 :     } else {
1624 : edgomez 1.47 image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128);
1625 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1626 :     "warning: nothing to output");
1627 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64,
1628 :     "bframe decoder lag");
1629 :    
1630 : edgomez 1.51 decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP, quant);
1631 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1632 : edgomez 1.47 }
1633 :     }
1634 : Isibaar 1.50
1635 : Isibaar 1.1 emms();
1636 :     stop_global_timer();
1637 :    
1638 : edgomez 1.51 return (BitstreamPos(&bs) + 7) / 8; /* number of bytes consumed */
1639 : Isibaar 1.1 }

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