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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 : syskin 1.60 * $Id: decoder.c,v 1.59 2004/06/12 13:02:12 edgomez Exp $
24 : edgomez 1.43 *
25 : edgomez 1.48 ****************************************************************************/
26 : Isibaar 1.1
27 : edgomez 1.47 #include <stdio.h>
28 : Isibaar 1.1 #include <stdlib.h>
29 : edgomez 1.12 #include <string.h>
30 : Isibaar 1.1
31 : chenm001 1.27 #ifdef BFRAMES_DEC_DEBUG
32 :     #define BFRAMES_DEC
33 :     #endif
34 :    
35 : Isibaar 1.1 #include "xvid.h"
36 :     #include "portab.h"
37 : edgomez 1.47 #include "global.h"
38 : Isibaar 1.1
39 :     #include "decoder.h"
40 :     #include "bitstream/bitstream.h"
41 :     #include "bitstream/mbcoding.h"
42 :    
43 : edgomez 1.51 #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(block, 1, 64, int16_t, CACHE_LINE);
397 :     DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE);
398 :    
399 :     int stride = dec->edged_width;
400 :     int next_block = stride * (reduced_resolution ? 16 : 8);
401 :     const int stride2 = stride/2;
402 :     int i;
403 :     const uint32_t iQuant = pMB->quant;
404 :     const int direction = dec->alternate_vertical_scan ? 2 : 0;
405 :     const quant_interFuncPtr dequant = dec->quant_type == 0 ? dequant_h263_inter : dequant_mpeg_inter;
406 :    
407 :     for (i = 0; i < 6; i++) {
408 :    
409 :     if (cbp & (1 << (5 - i))) { /* coded */
410 :    
411 :     memset(block, 0, 64 * sizeof(int16_t)); /* clear */
412 :    
413 :     start_timer();
414 :     get_inter_block(bs, block, direction);
415 :     stop_coding_timer();
416 :    
417 :     start_timer();
418 :     dequant(&data[i * 64], block, iQuant, dec->mpeg_quant_matrices);
419 :     stop_iquant_timer();
420 :    
421 :     start_timer();
422 :     idct(&data[i * 64]);
423 :     stop_idct_timer();
424 :     }
425 :     }
426 : Isibaar 1.1
427 : edgomez 1.51 if (dec->interlacing && pMB->field_dct) {
428 :     next_block = stride;
429 :     stride *= 2;
430 :     }
431 : Isibaar 1.1
432 : edgomez 1.51 start_timer();
433 :     if (reduced_resolution) {
434 :     if (cbp & 32)
435 :     add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride);
436 :     if (cbp & 16)
437 :     add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride);
438 :     if (cbp & 8)
439 :     add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride);
440 :     if (cbp & 4)
441 :     add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride);
442 :     if (cbp & 2)
443 :     add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2);
444 :     if (cbp & 1)
445 :     add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2);
446 :     } else {
447 :     if (cbp & 32)
448 :     transfer_16to8add(pY_Cur, &data[0 * 64], stride);
449 :     if (cbp & 16)
450 :     transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride);
451 :     if (cbp & 8)
452 :     transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride);
453 :     if (cbp & 4)
454 :     transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride);
455 :     if (cbp & 2)
456 :     transfer_16to8add(pU_Cur, &data[4 * 64], stride2);
457 :     if (cbp & 1)
458 :     transfer_16to8add(pV_Cur, &data[5 * 64], stride2);
459 :     }
460 :     stop_transfer_timer();
461 :     }
462 : Isibaar 1.1
463 : edgomez 1.48 /* decode an inter macroblock */
464 : edgomez 1.51 static void
465 : edgomez 1.19 decoder_mbinter(DECODER * dec,
466 :     const MACROBLOCK * pMB,
467 :     const uint32_t x_pos,
468 :     const uint32_t y_pos,
469 :     const uint32_t cbp,
470 :     Bitstream * bs,
471 : edgomez 1.47 const uint32_t rounding,
472 : edgomez 1.51 const int reduced_resolution,
473 :     const int ref)
474 : Isibaar 1.1 {
475 : h 1.8 uint32_t stride = dec->edged_width;
476 :     uint32_t stride2 = stride / 2;
477 : edgomez 1.7 uint32_t i;
478 : edgomez 1.51
479 : h 1.5 uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
480 : edgomez 1.47
481 : Isibaar 1.1 int uv_dx, uv_dy;
482 : edgomez 1.47 VECTOR mv[4]; /* local copy of mvs */
483 :    
484 :     if (reduced_resolution) {
485 :     pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5);
486 :     pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4);
487 :     pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4);
488 :     for (i = 0; i < 4; i++) {
489 :     mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x);
490 :     mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y);
491 :     }
492 :     } else {
493 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
494 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
495 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
496 :     for (i = 0; i < 4; i++)
497 :     mv[i] = pMB->mvs[i];
498 :     }
499 :    
500 : syskin 1.54 for (i = 0; i < 4; i++) {
501 :     /* clip to valid range */
502 :     int border = (int)(dec->mb_width - x_pos) << (5 + dec->quarterpel);
503 :     if (mv[i].x > border) {
504 :     DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
505 :     mv[i].x = border;
506 :     } else {
507 :     border = (-(int)x_pos-1) << (5 + dec->quarterpel);
508 :     if (mv[i].x < border) {
509 :     DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", mv[i].x, border, x_pos, y_pos);
510 :     mv[i].x = border;
511 :     }
512 :     }
513 :    
514 :     border = (int)(dec->mb_height - y_pos) << (5 + dec->quarterpel);
515 :     if (mv[i].y > border) {
516 :     DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
517 :     mv[i].y = border;
518 :     } else {
519 :     border = (-(int)y_pos-1) << (5 + dec->quarterpel);
520 :     if (mv[i].y < border) {
521 :     DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", mv[i].y, border, x_pos, y_pos);
522 :     mv[i].y = border;
523 :     }
524 :     }
525 :     }
526 :    
527 : edgomez 1.51 start_timer();
528 :    
529 :     if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */
530 :    
531 :     uv_dx = mv[0].x;
532 :     uv_dy = mv[0].y;
533 :     if (dec->quarterpel) {
534 :     uv_dx /= 2;
535 :     uv_dy /= 2;
536 :     }
537 : edgomez 1.47 uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
538 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
539 :    
540 :     if (reduced_resolution)
541 :     interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
542 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
543 :     else if (dec->quarterpel)
544 :     interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64,
545 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
546 :     mv[0].x, mv[0].y, stride, rounding);
547 : edgomez 1.47 else
548 : edgomez 1.51 interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos,
549 :     mv[0].x, mv[0].y, stride, rounding);
550 : Isibaar 1.1
551 : edgomez 1.47 } else { /* MODE_INTER4V */
552 :    
553 : edgomez 1.51 if(dec->quarterpel) {
554 :     uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2);
555 :     uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2);
556 :     } else {
557 :     uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x;
558 :     uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y;
559 :     }
560 : edgomez 1.47
561 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
562 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
563 : edgomez 1.47
564 : edgomez 1.51 if (reduced_resolution) {
565 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos,
566 : edgomez 1.51 mv[0].x, mv[0].y, stride, rounding);
567 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos,
568 : edgomez 1.51 mv[1].x, mv[1].y, stride, rounding);
569 : edgomez 1.47 interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos, 32*y_pos + 16,
570 : edgomez 1.51 mv[2].x, mv[2].y, stride, rounding);
571 :     interpolate16x16_switch(dec->cur.y, dec->refn[0].y , 32*x_pos + 16, 32*y_pos + 16,
572 :     mv[3].x, mv[3].y, stride, rounding);
573 : edgomez 1.47 interpolate16x16_switch(dec->cur.u, dec->refn[0].u , 16 * x_pos, 16 * y_pos,
574 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
575 : edgomez 1.47 interpolate16x16_switch(dec->cur.v, dec->refn[0].v , 16 * x_pos, 16 * y_pos,
576 : edgomez 1.51 uv_dx, uv_dy, stride2, rounding);
577 : edgomez 1.47
578 : edgomez 1.51 } else if (dec->quarterpel) {
579 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
580 :     dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
581 :     mv[0].x, mv[0].y, stride, rounding);
582 :     interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64,
583 :     dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
584 :     mv[1].x, mv[1].y, stride, rounding);
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 + 8,
587 :     mv[2].x, mv[2].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 + 8,
590 :     mv[3].x, mv[3].y, stride, rounding);
591 :     } else {
592 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos,
593 :     mv[0].x, mv[0].y, stride, rounding);
594 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos,
595 :     mv[1].x, mv[1].y, stride, rounding);
596 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8,
597 :     mv[2].x, mv[2].y, stride, rounding);
598 :     interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8,
599 :     mv[3].x, mv[3].y, stride, rounding);
600 : edgomez 1.47 }
601 :     }
602 :    
603 : edgomez 1.51 /* chroma */
604 :     if (reduced_resolution) {
605 :     interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos,
606 :     uv_dx, uv_dy, stride2, rounding);
607 :     interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos,
608 :     uv_dx, uv_dy, stride2, rounding);
609 :     } else {
610 :     interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos,
611 :     uv_dx, uv_dy, stride2, rounding);
612 :     interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos,
613 :     uv_dx, uv_dy, stride2, rounding);
614 : edgomez 1.47 }
615 : Isibaar 1.1
616 : edgomez 1.51 stop_comp_timer();
617 : edgomez 1.47
618 : edgomez 1.51 if (cbp)
619 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur,
620 :     reduced_resolution, pMB);
621 : edgomez 1.47 }
622 :    
623 :     static void
624 :     decoder_mbgmc(DECODER * dec,
625 :     MACROBLOCK * const pMB,
626 :     const uint32_t x_pos,
627 :     const uint32_t y_pos,
628 :     const uint32_t fcode,
629 :     const uint32_t cbp,
630 :     Bitstream * bs,
631 : edgomez 1.51 const uint32_t rounding)
632 : edgomez 1.47 {
633 :     const uint32_t stride = dec->edged_width;
634 :     const uint32_t stride2 = stride / 2;
635 : edgomez 1.51
636 : edgomez 1.47 uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
637 :     uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
638 :     uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
639 :    
640 : edgomez 1.51 NEW_GMC_DATA * gmc_data = &dec->new_gmc_data;
641 :    
642 : edgomez 1.47 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
643 : Isibaar 1.1
644 :     start_timer();
645 : edgomez 1.51
646 : edgomez 1.47 /* this is where the calculations are done */
647 :    
648 : edgomez 1.51 gmc_data->predict_16x16(gmc_data,
649 :     dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y,
650 :     stride, stride, x_pos, y_pos, rounding);
651 :    
652 :     gmc_data->predict_8x8(gmc_data,
653 :     dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u,
654 :     dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v,
655 :     stride2, stride2, x_pos, y_pos, rounding);
656 : edgomez 1.47
657 : edgomez 1.51 gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel);
658 : Isibaar 1.1
659 : edgomez 1.51 pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode);
660 :     pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode);
661 : edgomez 1.47
662 : edgomez 1.51 pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv;
663 : Isibaar 1.1
664 : edgomez 1.51 stop_transfer_timer();
665 : Isibaar 1.1
666 : edgomez 1.51 if (cbp)
667 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
668 : Isibaar 1.1
669 :     }
670 :    
671 :    
672 : edgomez 1.51 static void
673 : edgomez 1.19 decoder_iframe(DECODER * dec,
674 : edgomez 1.51 Bitstream * bs,
675 :     int reduced_resolution,
676 :     int quant,
677 :     int intra_dc_threshold)
678 : Isibaar 1.1 {
679 : chenm001 1.26 uint32_t bound;
680 :     uint32_t x, y;
681 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
682 :     uint32_t mb_height = dec->mb_height;
683 : edgomez 1.51
684 :     if (reduced_resolution) {
685 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
686 :     mb_height = (dec->height + 31) / 32;
687 :     }
688 : chenm001 1.25
689 : chenm001 1.26 bound = 0;
690 : edgomez 1.7
691 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
692 :     for (x = 0; x < mb_width; x++) {
693 : chenm001 1.26 MACROBLOCK *mb;
694 : Isibaar 1.1 uint32_t mcbpc;
695 :     uint32_t cbpc;
696 :     uint32_t acpred_flag;
697 :     uint32_t cbpy;
698 :     uint32_t cbp;
699 :    
700 : chenm001 1.26 while (BitstreamShowBits(bs, 9) == 1)
701 :     BitstreamSkip(bs, 9);
702 :    
703 :     if (check_resync_marker(bs, 0))
704 :     {
705 : edgomez 1.51 bound = read_video_packet_header(bs, dec, 0,
706 : edgomez 1.47 &quant, NULL, NULL, &intra_dc_threshold);
707 :     x = bound % mb_width;
708 :     y = bound / mb_width;
709 : chenm001 1.26 }
710 :     mb = &dec->mbs[y * dec->mb_width + x];
711 :    
712 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
713 : chenm001 1.26
714 : Isibaar 1.1 mcbpc = get_mcbpc_intra(bs);
715 :     mb->mode = mcbpc & 7;
716 :     cbpc = (mcbpc >> 4);
717 :    
718 :     acpred_flag = BitstreamGetBit(bs);
719 :    
720 :     cbpy = get_cbpy(bs, 1);
721 :     cbp = (cbpy << 2) | cbpc;
722 :    
723 : edgomez 1.19 if (mb->mode == MODE_INTRA_Q) {
724 :     quant += dquant_table[BitstreamGetBits(bs, 2)];
725 :     if (quant > 31) {
726 : Isibaar 1.1 quant = 31;
727 : edgomez 1.19 } else if (quant < 1) {
728 : Isibaar 1.1 quant = 1;
729 :     }
730 :     }
731 :     mb->quant = quant;
732 : chenm001 1.30 mb->mvs[0].x = mb->mvs[0].y =
733 :     mb->mvs[1].x = mb->mvs[1].y =
734 :     mb->mvs[2].x = mb->mvs[2].y =
735 :     mb->mvs[3].x = mb->mvs[3].y =0;
736 : h 1.5
737 : edgomez 1.19 if (dec->interlacing) {
738 : h 1.5 mb->field_dct = BitstreamGetBit(bs);
739 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct);
740 : h 1.5 }
741 : Isibaar 1.1
742 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
743 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
744 :    
745 : Isibaar 1.1 }
746 : albeu 1.32 if(dec->out_frm)
747 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width);
748 : Isibaar 1.1 }
749 : edgomez 1.7
750 : Isibaar 1.1 }
751 :    
752 :    
753 : edgomez 1.51 static void
754 : edgomez 1.19 get_motion_vector(DECODER * dec,
755 : edgomez 1.51 Bitstream * bs,
756 :     int x,
757 :     int y,
758 :     int k,
759 :     VECTOR * ret_mv,
760 :     int fcode,
761 :     const int bound)
762 : Isibaar 1.1 {
763 : edgomez 1.7
764 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
765 :     const int high = (32 * scale_fac) - 1;
766 :     const int low = ((-32) * scale_fac);
767 :     const int range = (64 * scale_fac);
768 : Isibaar 1.1
769 : edgomez 1.51 const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k);
770 : edgomez 1.47 VECTOR mv;
771 : Isibaar 1.1
772 : edgomez 1.47 mv.x = get_mv(bs, fcode);
773 :     mv.y = get_mv(bs, fcode);
774 : edgomez 1.19
775 : 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);
776 : chenm001 1.26
777 : edgomez 1.47 mv.x += pmv.x;
778 :     mv.y += pmv.y;
779 : Isibaar 1.1
780 : edgomez 1.47 if (mv.x < low) {
781 :     mv.x += range;
782 :     } else if (mv.x > high) {
783 :     mv.x -= range;
784 : Isibaar 1.1 }
785 :    
786 : edgomez 1.47 if (mv.y < low) {
787 :     mv.y += range;
788 :     } else if (mv.y > high) {
789 :     mv.y -= range;
790 : Isibaar 1.1 }
791 :    
792 : edgomez 1.51 ret_mv->x = mv.x;
793 :     ret_mv->y = mv.y;
794 :     }
795 : Isibaar 1.1
796 : edgomez 1.47 /* for P_VOP set gmc_warp to NULL */
797 : edgomez 1.51 static void
798 : edgomez 1.19 decoder_pframe(DECODER * dec,
799 : edgomez 1.51 Bitstream * bs,
800 :     int rounding,
801 :     int reduced_resolution,
802 :     int quant,
803 :     int fcode,
804 :     int intra_dc_threshold,
805 :     const WARPPOINTS *const gmc_warp)
806 : Isibaar 1.1 {
807 :     uint32_t x, y;
808 : chenm001 1.26 uint32_t bound;
809 : albeu 1.32 int cp_mb, st_mb;
810 : edgomez 1.47 uint32_t mb_width = dec->mb_width;
811 :     uint32_t mb_height = dec->mb_height;
812 : edgomez 1.51
813 :     if (reduced_resolution) {
814 : edgomez 1.47 mb_width = (dec->width + 31) / 32;
815 :     mb_height = (dec->height + 31) / 32;
816 :     }
817 : Isibaar 1.1
818 : edgomez 1.57 if (!dec->is_edged[0]) {
819 :     start_timer();
820 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
821 :     dec->width, dec->height, dec->bs_version);
822 :     dec->is_edged[0] = 1;
823 :     stop_edges_timer();
824 :     }
825 : Isibaar 1.1
826 : edgomez 1.51 if (gmc_warp) {
827 :     /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */
828 :     generate_GMCparameters( dec->sprite_warping_points,
829 :     dec->sprite_warping_accuracy, gmc_warp,
830 :     dec->width, dec->height, &dec->new_gmc_data);
831 : edgomez 1.47
832 : edgomez 1.51 /* image warping is done block-based in decoder_mbgmc(), now */
833 : edgomez 1.47 }
834 :    
835 : chenm001 1.26 bound = 0;
836 :    
837 : edgomez 1.47 for (y = 0; y < mb_height; y++) {
838 : albeu 1.32 cp_mb = st_mb = 0;
839 : edgomez 1.47 for (x = 0; x < mb_width; x++) {
840 : chenm001 1.26 MACROBLOCK *mb;
841 :    
842 : edgomez 1.48 /* skip stuffing */
843 : chenm001 1.26 while (BitstreamShowBits(bs, 10) == 1)
844 :     BitstreamSkip(bs, 10);
845 :    
846 : edgomez 1.51 if (check_resync_marker(bs, fcode - 1)) {
847 :     bound = read_video_packet_header(bs, dec, fcode - 1,
848 : edgomez 1.47 &quant, &fcode, NULL, &intra_dc_threshold);
849 :     x = bound % mb_width;
850 :     y = bound / mb_width;
851 : chenm001 1.26 }
852 :     mb = &dec->mbs[y * dec->mb_width + x];
853 :    
854 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32));
855 : suxen_drol 1.23
856 : edgomez 1.51 if (!(BitstreamGetBit(bs))) { /* block _is_ coded */
857 :     uint32_t mcbpc, cbpc, cbpy, cbp;
858 :     uint32_t intra, acpred_flag = 0;
859 : edgomez 1.48 int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */
860 : Isibaar 1.1
861 : albeu 1.32 cp_mb++;
862 : Isibaar 1.1 mcbpc = get_mcbpc_inter(bs);
863 :     mb->mode = mcbpc & 7;
864 :     cbpc = (mcbpc >> 4);
865 : edgomez 1.51
866 :     DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode);
867 :     DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc);
868 : Isibaar 1.1
869 :     intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q);
870 : edgomez 1.19
871 : edgomez 1.47 if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q))
872 :     mcsel = BitstreamGetBit(bs);
873 : edgomez 1.51 else if (intra)
874 :     acpred_flag = BitstreamGetBit(bs);
875 : edgomez 1.47
876 : chenm001 1.26 cbpy = get_cbpy(bs, intra);
877 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel);
878 : chenm001 1.25
879 : Isibaar 1.1 cbp = (cbpy << 2) | cbpc;
880 :    
881 : edgomez 1.19 if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) {
882 : chenm001 1.26 int dquant = dquant_table[BitstreamGetBits(bs, 2)];
883 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant);
884 : chenm001 1.26 quant += dquant;
885 : edgomez 1.19 if (quant > 31) {
886 : Isibaar 1.1 quant = 31;
887 : chenm001 1.26 } else if (quant < 1) {
888 : Isibaar 1.1 quant = 1;
889 :     }
890 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant);
891 : Isibaar 1.1 }
892 :     mb->quant = quant;
893 : h 1.5
894 : edgomez 1.19 if (dec->interlacing) {
895 : h 1.37 if (cbp || intra) {
896 :     mb->field_dct = BitstreamGetBit(bs);
897 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
898 : h 1.37 }
899 : h 1.5
900 : edgomez 1.51 if ((mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) && !mcsel) {
901 : h 1.5 mb->field_pred = BitstreamGetBit(bs);
902 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
903 : h 1.5
904 : edgomez 1.19 if (mb->field_pred) {
905 : h 1.5 mb->field_for_top = BitstreamGetBit(bs);
906 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
907 : h 1.5 mb->field_for_bot = BitstreamGetBit(bs);
908 : edgomez 1.51 DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
909 : h 1.5 }
910 :     }
911 :     }
912 : edgomez 1.51
913 : edgomez 1.47 if (mcsel) {
914 : edgomez 1.51 decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding);
915 : edgomez 1.47 continue;
916 :    
917 :     } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) {
918 : h 1.5
919 : edgomez 1.19 if (dec->interlacing && mb->field_pred) {
920 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
921 :     get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound);
922 : edgomez 1.19 } else {
923 : edgomez 1.51 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
924 : edgomez 1.47 mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
925 : h 1.5 }
926 : chl 1.35 } else if (mb->mode == MODE_INTER4V ) {
927 : chenm001 1.26 get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound);
928 :     get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound);
929 :     get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound);
930 :     get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound);
931 : edgomez 1.51 } else { /* MODE_INTRA, MODE_INTRA_Q */
932 :     mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
933 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
934 : edgomez 1.19 decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant,
935 : edgomez 1.47 intra_dc_threshold, bound, reduced_resolution);
936 : Isibaar 1.1 continue;
937 :     }
938 :    
939 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, cbp, bs,
940 :     rounding, reduced_resolution, 0);
941 : edgomez 1.47
942 : edgomez 1.51 } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */
943 : edgomez 1.47 mb->mode = MODE_NOT_CODED_GMC;
944 : edgomez 1.51 mb->quant = quant;
945 :     decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding);
946 : edgomez 1.39
947 : edgomez 1.47 if(dec->out_frm && cp_mb > 0) {
948 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
949 :     cp_mb = 0;
950 : edgomez 1.47 }
951 :     st_mb = x+1;
952 : edgomez 1.51 } else { /* not coded P_VOP macroblock */
953 : chenm001 1.14 mb->mode = MODE_NOT_CODED;
954 : edgomez 1.51 mb->quant = quant;
955 : edgomez 1.47
956 : Isibaar 1.1 mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0;
957 :     mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0;
958 :    
959 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, 0, bs,
960 :     rounding, reduced_resolution, 0);
961 : edgomez 1.47
962 : albeu 1.32 if(dec->out_frm && cp_mb > 0) {
963 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
964 :     cp_mb = 0;
965 : albeu 1.32 }
966 :     st_mb = x+1;
967 : Isibaar 1.1 }
968 :     }
969 : edgomez 1.51
970 : albeu 1.32 if(dec->out_frm && cp_mb > 0)
971 : edgomez 1.51 output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb);
972 : Isibaar 1.1 }
973 :     }
974 :    
975 : edgomez 1.47
976 : edgomez 1.48 /* decode B-frame motion vector */
977 : edgomez 1.51 static void
978 :     get_b_motion_vector(Bitstream * bs,
979 : edgomez 1.47 VECTOR * mv,
980 :     int fcode,
981 : edgomez 1.51 const VECTOR pmv,
982 :     const DECODER * const dec,
983 :     const int x, const int y)
984 : chenm001 1.14 {
985 : edgomez 1.51 const int scale_fac = 1 << (fcode - 1);
986 :     const int high = (32 * scale_fac) - 1;
987 :     const int low = ((-32) * scale_fac);
988 :     const int range = (64 * scale_fac);
989 : edgomez 1.7
990 : edgomez 1.51 int mv_x = get_mv(bs, fcode);
991 :     int mv_y = get_mv(bs, fcode);
992 : Isibaar 1.1
993 : edgomez 1.51 mv_x += pmv.x;
994 :     mv_y += pmv.y;
995 : albeu 1.32
996 : edgomez 1.51 if (mv_x < low)
997 : edgomez 1.47 mv_x += range;
998 : edgomez 1.51 else if (mv_x > high)
999 : edgomez 1.47 mv_x -= range;
1000 :    
1001 : edgomez 1.51 if (mv_y < low)
1002 : edgomez 1.47 mv_y += range;
1003 : edgomez 1.51 else if (mv_y > high)
1004 : edgomez 1.47 mv_y -= range;
1005 :    
1006 : edgomez 1.51 mv->x = mv_x;
1007 :     mv->y = mv_y;
1008 : edgomez 1.47 }
1009 :    
1010 : edgomez 1.51 /* decode an B-frame direct & interpolate macroblock */
1011 :     static void
1012 : edgomez 1.47 decoder_bf_interpolate_mbinter(DECODER * dec,
1013 : edgomez 1.51 IMAGE forward,
1014 :     IMAGE backward,
1015 :     const MACROBLOCK * pMB,
1016 :     const uint32_t x_pos,
1017 :     const uint32_t y_pos,
1018 :     Bitstream * bs,
1019 :     const int direct)
1020 : edgomez 1.47 {
1021 :     uint32_t stride = dec->edged_width;
1022 :     uint32_t stride2 = stride / 2;
1023 :     int uv_dx, uv_dy;
1024 :     int b_uv_dx, b_uv_dy;
1025 :     uint8_t *pY_Cur, *pU_Cur, *pV_Cur;
1026 : edgomez 1.51 const uint32_t cbp = pMB->cbp;
1027 : edgomez 1.47
1028 :     pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4);
1029 :     pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3);
1030 :     pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3);
1031 :    
1032 : edgomez 1.51 if (!direct) {
1033 : edgomez 1.47 uv_dx = pMB->mvs[0].x;
1034 :     uv_dy = pMB->mvs[0].y;
1035 :    
1036 :     b_uv_dx = pMB->b_mvs[0].x;
1037 :     b_uv_dy = pMB->b_mvs[0].y;
1038 :    
1039 : edgomez 1.51 if (dec->quarterpel) {
1040 : edgomez 1.47 uv_dx /= 2;
1041 :     uv_dy /= 2;
1042 :     b_uv_dx /= 2;
1043 :     b_uv_dy /= 2;
1044 :     }
1045 :    
1046 :     uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3];
1047 :     uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3];
1048 :    
1049 :     b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3];
1050 :     b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3];
1051 : edgomez 1.51
1052 : edgomez 1.47 } else {
1053 : edgomez 1.51 if(dec->quarterpel) {
1054 :     uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2);
1055 :     uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2);
1056 :     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);
1057 :     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);
1058 :     } else {
1059 :     uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x;
1060 :     uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y;
1061 :     b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x;
1062 :     b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y;
1063 :     }
1064 : edgomez 1.47
1065 : edgomez 1.51 uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf];
1066 :     uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf];
1067 :     b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf];
1068 :     b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf];
1069 : edgomez 1.47 }
1070 :    
1071 :     start_timer();
1072 :     if(dec->quarterpel) {
1073 : edgomez 1.51 if(!direct) {
1074 : edgomez 1.47 interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1075 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1076 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1077 :     } else {
1078 : edgomez 1.47 interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64,
1079 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1080 :     pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
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 + 8, 16*y_pos,
1083 :     pMB->mvs[1].x, pMB->mvs[1].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, 16*y_pos + 8,
1086 :     pMB->mvs[2].x, pMB->mvs[2].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 + 8,
1089 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1090 : edgomez 1.47 }
1091 : edgomez 1.51 } else {
1092 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos,
1093 : edgomez 1.51 pMB->mvs[0].x, pMB->mvs[0].y, stride, 0);
1094 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos,
1095 : edgomez 1.51 pMB->mvs[1].x, pMB->mvs[1].y, stride, 0);
1096 : edgomez 1.47 interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8,
1097 : edgomez 1.51 pMB->mvs[2].x, pMB->mvs[2].y, stride, 0);
1098 :     interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos + 8,
1099 :     pMB->mvs[3].x, pMB->mvs[3].y, stride, 0);
1100 : edgomez 1.47 }
1101 :    
1102 :     interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx,
1103 : edgomez 1.51 uv_dy, stride2, 0);
1104 : edgomez 1.47 interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx,
1105 : edgomez 1.51 uv_dy, stride2, 0);
1106 : edgomez 1.47
1107 :    
1108 :     if(dec->quarterpel) {
1109 : edgomez 1.51 if(!direct) {
1110 : edgomez 1.47 interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1111 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1112 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1113 :     } else {
1114 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1115 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos, 16*y_pos,
1116 :     pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1117 : edgomez 1.47 interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64,
1118 : edgomez 1.51 dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos,
1119 :     pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
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 + 8,
1122 :     pMB->b_mvs[2].x, pMB->b_mvs[2].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 + 8,
1125 :     pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1126 : edgomez 1.47 }
1127 : edgomez 1.51 } else {
1128 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos,
1129 : edgomez 1.51 pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0);
1130 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1131 : edgomez 1.51 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0);
1132 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos,
1133 : edgomez 1.51 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0);
1134 : edgomez 1.47 interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8,
1135 : edgomez 1.51 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0);
1136 : edgomez 1.47 }
1137 :    
1138 :     interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos,
1139 : edgomez 1.51 b_uv_dx, b_uv_dy, stride2, 0);
1140 : edgomez 1.47 interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos,
1141 : edgomez 1.51 b_uv_dx, b_uv_dy, stride2, 0);
1142 : edgomez 1.47
1143 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1144 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos,
1145 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos,
1146 :     stride, 1, 8);
1147 :    
1148 :     interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1149 :     dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1150 :     dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8,
1151 :     stride, 1, 8);
1152 :    
1153 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1154 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1155 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos,
1156 :     stride, 1, 8);
1157 :    
1158 :     interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1159 :     dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1160 :     dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8,
1161 :     stride, 1, 8);
1162 :    
1163 :     interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1164 :     dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos,
1165 :     dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos,
1166 :     stride2, 1, 8);
1167 :    
1168 :     interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1169 :     dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos,
1170 :     dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos,
1171 :     stride2, 1, 8);
1172 :    
1173 :     stop_comp_timer();
1174 :    
1175 : edgomez 1.51 if (cbp)
1176 :     decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB);
1177 : edgomez 1.47 }
1178 :    
1179 : edgomez 1.48 /* for decode B-frame dbquant */
1180 : edgomez 1.51 static __inline int32_t
1181 : edgomez 1.47 get_dbquant(Bitstream * bs)
1182 :     {
1183 : edgomez 1.51 if (!BitstreamGetBit(bs)) /* '0' */
1184 : edgomez 1.47 return (0);
1185 : edgomez 1.51 else if (!BitstreamGetBit(bs)) /* '10' */
1186 : edgomez 1.47 return (-2);
1187 : edgomez 1.51 else /* '11' */
1188 : edgomez 1.48 return (2);
1189 : edgomez 1.47 }
1190 :    
1191 : edgomez 1.48 /*
1192 : edgomez 1.51 * decode B-frame mb_type
1193 :     * bit ret_value
1194 :     * 1 0
1195 :     * 01 1
1196 :     * 001 2
1197 :     * 0001 3
1198 : edgomez 1.48 */
1199 : edgomez 1.51 static int32_t __inline
1200 : edgomez 1.47 get_mbtype(Bitstream * bs)
1201 :     {
1202 :     int32_t mb_type;
1203 :    
1204 : edgomez 1.51 for (mb_type = 0; mb_type <= 3; mb_type++)
1205 : edgomez 1.47 if (BitstreamGetBit(bs))
1206 : edgomez 1.51 return (mb_type);
1207 : edgomez 1.47
1208 : edgomez 1.51 return -1;
1209 : edgomez 1.47 }
1210 :    
1211 : edgomez 1.51 static void
1212 : edgomez 1.47 decoder_bframe(DECODER * dec,
1213 : edgomez 1.51 Bitstream * bs,
1214 :     int quant,
1215 :     int fcode_forward,
1216 :     int fcode_backward)
1217 : edgomez 1.47 {
1218 :     uint32_t x, y;
1219 :     VECTOR mv;
1220 :     const VECTOR zeromv = {0,0};
1221 : edgomez 1.51 int i;
1222 : edgomez 1.47
1223 : edgomez 1.57 if (!dec->is_edged[0]) {
1224 :     start_timer();
1225 :     image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height,
1226 :     dec->width, dec->height, dec->bs_version);
1227 :     dec->is_edged[0] = 1;
1228 :     stop_edges_timer();
1229 :     }
1230 :    
1231 :     if (!dec->is_edged[1]) {
1232 :     start_timer();
1233 :     image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height,
1234 :     dec->width, dec->height, dec->bs_version);
1235 :     dec->is_edged[1] = 1;
1236 :     stop_edges_timer();
1237 :     }
1238 : edgomez 1.47
1239 :     for (y = 0; y < dec->mb_height; y++) {
1240 : edgomez 1.48 /* Initialize Pred Motion Vector */
1241 : edgomez 1.47 dec->p_fmv = dec->p_bmv = zeromv;
1242 :     for (x = 0; x < dec->mb_width; x++) {
1243 :     MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x];
1244 :     MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x];
1245 : edgomez 1.51 const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward;
1246 :     uint32_t intra_dc_threshold; /* fake variable */
1247 :    
1248 :     if (check_resync_marker(bs, fcode_max - 1)) {
1249 :     int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant,
1250 :     &fcode_forward, &fcode_backward, &intra_dc_threshold);
1251 :     x = bound % dec->mb_width;
1252 :     y = bound / dec->mb_width;
1253 :     /* reset predicted macroblocks */
1254 :     dec->p_fmv = dec->p_bmv = zeromv;
1255 :     }
1256 : edgomez 1.47
1257 :     mv =
1258 :     mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] =
1259 :     mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv;
1260 : edgomez 1.51 mb->quant = quant;
1261 : edgomez 1.47
1262 : edgomez 1.48 /*
1263 : edgomez 1.51 * skip if the co-located P_VOP macroblock is not coded
1264 : edgomez 1.48 * if not codec in co-located S_VOP macroblock is _not_
1265 :     * automatically skipped
1266 :     */
1267 : edgomez 1.47
1268 :     if (last_mb->mode == MODE_NOT_CODED) {
1269 :     mb->cbp = 0;
1270 : edgomez 1.51 mb->mode = MODE_FORWARD;
1271 :     decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1272 : edgomez 1.47 continue;
1273 :     }
1274 :    
1275 : edgomez 1.48 if (!BitstreamGetBit(bs)) { /* modb=='0' */
1276 : edgomez 1.47 const uint8_t modb2 = BitstreamGetBit(bs);
1277 :    
1278 : edgomez 1.51 mb->mode = get_mbtype(bs);
1279 : edgomez 1.47
1280 : edgomez 1.51 if (!modb2) /* modb=='00' */
1281 : edgomez 1.47 mb->cbp = BitstreamGetBits(bs, 6);
1282 : edgomez 1.51 else
1283 : edgomez 1.47 mb->cbp = 0;
1284 : edgomez 1.51
1285 :     if (mb->mode && mb->cbp) {
1286 : edgomez 1.47 quant += get_dbquant(bs);
1287 : edgomez 1.51 if (quant > 31)
1288 : edgomez 1.47 quant = 31;
1289 : edgomez 1.51 else if (quant < 1)
1290 : edgomez 1.47 quant = 1;
1291 : edgomez 1.51 }
1292 :     mb->quant = quant;
1293 :    
1294 :     if (dec->interlacing) {
1295 :     if (mb->cbp) {
1296 :     mb->field_dct = BitstreamGetBit(bs);
1297 :     DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct);
1298 :     }
1299 :    
1300 :     if (mb->mode) {
1301 :     mb->field_pred = BitstreamGetBit(bs);
1302 :     DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred);
1303 :    
1304 :     if (mb->field_pred) {
1305 :     mb->field_for_top = BitstreamGetBit(bs);
1306 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top);
1307 :     mb->field_for_bot = BitstreamGetBit(bs);
1308 :     DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot);
1309 :     }
1310 : edgomez 1.47 }
1311 :     }
1312 : edgomez 1.51
1313 : edgomez 1.47 } else {
1314 : edgomez 1.51 mb->mode = MODE_DIRECT_NONE_MV;
1315 : edgomez 1.47 mb->cbp = 0;
1316 :     }
1317 :    
1318 : edgomez 1.51 switch (mb->mode) {
1319 : edgomez 1.47 case MODE_DIRECT:
1320 : edgomez 1.51 get_b_motion_vector(bs, &mv, 1, zeromv, dec, x, y);
1321 : edgomez 1.47
1322 :     case MODE_DIRECT_NONE_MV:
1323 : edgomez 1.51 for (i = 0; i < 4; i++) {
1324 : edgomez 1.58 mb->mvs[i].x = last_mb->mvs[i].x*dec->time_bp/dec->time_pp + mv.x;
1325 :     mb->mvs[i].y = last_mb->mvs[i].y*dec->time_bp/dec->time_pp + mv.y;
1326 :    
1327 :     mb->b_mvs[i].x = (mv.x)
1328 :     ? mb->mvs[i].x - last_mb->mvs[i].x
1329 :     : last_mb->mvs[i].x*(dec->time_bp - dec->time_pp)/dec->time_pp;
1330 :     mb->b_mvs[i].y = (mv.y)
1331 :     ? mb->mvs[i].y - last_mb->mvs[i].y
1332 :     : last_mb->mvs[i].y*(dec->time_bp - dec->time_pp)/dec->time_pp;
1333 : edgomez 1.47 }
1334 : edgomez 1.51
1335 : edgomez 1.47 decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1336 : edgomez 1.51 mb, x, y, bs, 1);
1337 : edgomez 1.47 break;
1338 :    
1339 :     case MODE_INTERPOLATE:
1340 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1341 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1342 :    
1343 : edgomez 1.51 get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1344 :     dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0];
1345 : edgomez 1.47
1346 :     decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0],
1347 : edgomez 1.51 mb, x, y, bs, 0);
1348 : edgomez 1.47 break;
1349 :    
1350 :     case MODE_BACKWARD:
1351 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y);
1352 : edgomez 1.47 dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1353 :    
1354 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0);
1355 : edgomez 1.47 break;
1356 :    
1357 :     case MODE_FORWARD:
1358 : edgomez 1.51 get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y);
1359 : edgomez 1.47 dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0];
1360 :    
1361 : edgomez 1.51 decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1);
1362 : edgomez 1.47 break;
1363 :    
1364 :     default:
1365 : edgomez 1.51 DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode);
1366 : edgomez 1.47 }
1367 : edgomez 1.48 } /* End of for */
1368 :     }
1369 : edgomez 1.47 }
1370 :    
1371 :     /* perform post processing if necessary, and output the image */
1372 : edgomez 1.51 void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs,
1373 :     xvid_dec_frame_t * frame, xvid_dec_stats_t * stats,
1374 :     int coding_type, int quant)
1375 : edgomez 1.47 {
1376 : suxen_drol 1.55 const int brightness = XVID_VERSION_MINOR(frame->version) >= 1 ? frame->brightness : 0;
1377 :    
1378 : edgomez 1.51 if (dec->cartoon_mode)
1379 :     frame->general &= ~XVID_FILMEFFECT;
1380 : edgomez 1.47
1381 : suxen_drol 1.55 if ((frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) || brightness!=0)
1382 : suxen_drol 1.52 && mbs != NULL) /* post process */
1383 : edgomez 1.47 {
1384 :     /* note: image is stored to tmp */
1385 :     image_copy(&dec->tmp, img, dec->edged_width, dec->height);
1386 : edgomez 1.51 image_postproc(&dec->postproc, &dec->tmp, dec->edged_width,
1387 :     mbs, dec->mb_width, dec->mb_height, dec->mb_width,
1388 : suxen_drol 1.55 frame->general, brightness, dec->frames, (coding_type == B_VOP));
1389 : edgomez 1.47 img = &dec->tmp;
1390 :     }
1391 :    
1392 :     image_output(img, dec->width, dec->height,
1393 : edgomez 1.51 dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride,
1394 :     frame->output.csp, dec->interlacing);
1395 :    
1396 :     if (stats) {
1397 :     stats->type = coding2type(coding_type);
1398 :     stats->data.vop.time_base = (int)dec->time_base;
1399 :     stats->data.vop.time_increment = 0; /* XXX: todo */
1400 :     stats->data.vop.qscale_stride = dec->mb_width;
1401 :     stats->data.vop.qscale = dec->qscale;
1402 :     if (stats->data.vop.qscale != NULL && mbs != NULL) {
1403 :     int i;
1404 :     for (i = 0; i < dec->mb_width*dec->mb_height; i++)
1405 :     stats->data.vop.qscale[i] = mbs[i].quant;
1406 :     } else
1407 :     stats->data.vop.qscale = NULL;
1408 :     }
1409 : edgomez 1.47 }
1410 :    
1411 :    
1412 :     int
1413 :     decoder_decode(DECODER * dec,
1414 : edgomez 1.51 xvid_dec_frame_t * frame, xvid_dec_stats_t * stats)
1415 : edgomez 1.47 {
1416 :    
1417 :     Bitstream bs;
1418 :     uint32_t rounding;
1419 :     uint32_t reduced_resolution;
1420 : edgomez 1.51 uint32_t quant = 2;
1421 : edgomez 1.47 uint32_t fcode_forward;
1422 :     uint32_t fcode_backward;
1423 :     uint32_t intra_dc_threshold;
1424 :     WARPPOINTS gmc_warp;
1425 : edgomez 1.51 int coding_type;
1426 :     int success, output, seen_something;
1427 :    
1428 :     if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */
1429 :     return XVID_ERR_VERSION;
1430 : edgomez 1.47
1431 :     start_global_timer();
1432 :    
1433 : edgomez 1.51 dec->low_delay_default = (frame->general & XVID_LOWDELAY);
1434 :     if ((frame->general & XVID_DISCONTINUITY))
1435 : edgomez 1.47 dec->frames = 0;
1436 : edgomez 1.51 dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL;
1437 : edgomez 1.47
1438 : edgomez 1.51 if (frame->length < 0) { /* decoder flush */
1439 :     int ret;
1440 :     /* if not decoding "low_delay/packed", and this isn't low_delay and
1441 :     we have a reference frame, then outout the reference frame */
1442 :     if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) {
1443 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1444 :     dec->frames = 0;
1445 :     ret = 0;
1446 :     } else {
1447 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1448 :     ret = XVID_ERR_END;
1449 : edgomez 1.47 }
1450 :    
1451 :     emms();
1452 :     stop_global_timer();
1453 : edgomez 1.51 return ret;
1454 : edgomez 1.47 }
1455 : edgomez 1.19
1456 : Isibaar 1.1 BitstreamInit(&bs, frame->bitstream, frame->length);
1457 :    
1458 : edgomez 1.48 /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */
1459 : edgomez 1.47 if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f)
1460 :     {
1461 :     image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width,
1462 : edgomez 1.51 (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing);
1463 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1464 : edgomez 1.47 emms();
1465 : edgomez 1.51 return 1; /* one byte consumed */
1466 : edgomez 1.47 }
1467 :    
1468 : edgomez 1.51 success = 0;
1469 :     output = 0;
1470 :     seen_something = 0;
1471 :    
1472 : edgomez 1.47 repeat:
1473 :    
1474 : edgomez 1.51 coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution,
1475 : edgomez 1.47 &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp);
1476 :    
1477 : edgomez 1.51 DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n",
1478 :     coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp);
1479 : Isibaar 1.1
1480 : edgomez 1.51 if (coding_type == -1) { /* nothing */
1481 : edgomez 1.47 if (success) goto done;
1482 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1483 : edgomez 1.47 emms();
1484 : edgomez 1.51 return BitstreamPos(&bs)/8;
1485 : Isibaar 1.1 }
1486 :    
1487 : edgomez 1.51 if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */
1488 :    
1489 :     if (coding_type == -3)
1490 : edgomez 1.47 decoder_resize(dec);
1491 : edgomez 1.51
1492 :     if (stats) {
1493 :     stats->type = XVID_TYPE_VOL;
1494 : edgomez 1.47 stats->data.vol.general = 0;
1495 : edgomez 1.51 /*XXX: if (dec->interlacing)
1496 :     stats->data.vol.general |= ++INTERLACING; */
1497 : edgomez 1.47 stats->data.vol.width = dec->width;
1498 :     stats->data.vol.height = dec->height;
1499 : edgomez 1.51 stats->data.vol.par = dec->aspect_ratio;
1500 : edgomez 1.47 stats->data.vol.par_width = dec->par_width;
1501 :     stats->data.vol.par_height = dec->par_height;
1502 :     emms();
1503 : edgomez 1.51 return BitstreamPos(&bs)/8; /* number of bytes consumed */
1504 : edgomez 1.47 }
1505 : syskin 1.56 goto repeat;
1506 :     }
1507 :    
1508 :     if(dec->frames == 0 && coding_type != I_VOP) {
1509 :     /* 1st frame is not an i-vop */
1510 : edgomez 1.47 goto repeat;
1511 : edgomez 1.51 }
1512 : edgomez 1.47
1513 : 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 */
1514 : edgomez 1.47
1515 :     /* packed_mode: special-N_VOP treament */
1516 : edgomez 1.51 if (dec->packed_mode && coding_type == N_VOP) {
1517 :     if (dec->low_delay_default && dec->frames > 0) {
1518 :     decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1519 : edgomez 1.47 output = 1;
1520 :     }
1521 :     /* ignore otherwise */
1522 : edgomez 1.51 } else if (coding_type != B_VOP) {
1523 :     switch(coding_type) {
1524 : edgomez 1.47 case I_VOP :
1525 :     decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold);
1526 :     break;
1527 :     case P_VOP :
1528 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1529 : edgomez 1.47 fcode_forward, intra_dc_threshold, NULL);
1530 :     break;
1531 :     case S_VOP :
1532 : edgomez 1.51 decoder_pframe(dec, &bs, rounding, reduced_resolution, quant,
1533 : edgomez 1.47 fcode_forward, intra_dc_threshold, &gmc_warp);
1534 :     break;
1535 :     case N_VOP :
1536 : edgomez 1.51 /* XXX: not_coded vops are not used for forward prediction */
1537 :     /* we should not swap(last_mbs,mbs) */
1538 : edgomez 1.47 image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height);
1539 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */
1540 : edgomez 1.47 break;
1541 :     }
1542 :    
1543 : edgomez 1.51 if (reduced_resolution) {
1544 : edgomez 1.47 image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs,
1545 :     (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width,
1546 : edgomez 1.51 16, 0);
1547 : edgomez 1.47 }
1548 : Isibaar 1.1
1549 : edgomez 1.47 /* note: for packed_mode, output is performed when the special-N_VOP is decoded */
1550 : edgomez 1.51 if (!(dec->low_delay_default && dec->packed_mode)) {
1551 :     if (dec->low_delay) {
1552 :     decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1553 : edgomez 1.47 output = 1;
1554 : edgomez 1.51 } else if (dec->frames > 0) { /* is the reference frame valid? */
1555 : edgomez 1.47 /* output the reference frame */
1556 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1557 : edgomez 1.47 output = 1;
1558 :     }
1559 :     }
1560 : Isibaar 1.18
1561 : chenm001 1.14 image_swap(&dec->refn[0], &dec->refn[1]);
1562 : edgomez 1.57 dec->is_edged[1] = dec->is_edged[0];
1563 : chenm001 1.14 image_swap(&dec->cur, &dec->refn[0]);
1564 : edgomez 1.57 dec->is_edged[0] = 0;
1565 : edgomez 1.51 SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs);
1566 : edgomez 1.47 dec->last_reduced_resolution = reduced_resolution;
1567 : edgomez 1.51 dec->last_coding_type = coding_type;
1568 : edgomez 1.47
1569 :     dec->frames++;
1570 :     seen_something = 1;
1571 : chenm001 1.31
1572 : edgomez 1.51 } else { /* B_VOP */
1573 : edgomez 1.47
1574 : edgomez 1.51 if (dec->low_delay) {
1575 :     DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n");
1576 : syskin 1.60 dec->low_delay = 0;
1577 : edgomez 1.47 }
1578 :    
1579 : edgomez 1.51 if (dec->frames < 2) {
1580 : edgomez 1.47 /* attemping to decode a bvop without atleast 2 reference frames */
1581 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1582 :     "broken b-frame, mising ref frames");
1583 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1584 :     } else if (dec->time_pp <= dec->time_bp) {
1585 :     /* this occurs when dx50_bvop_compatibility==0 sequences are
1586 : edgomez 1.47 decoded in vfw. */
1587 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1588 :     "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp);
1589 : edgomez 1.51 if (stats) stats->type = XVID_TYPE_NOTHING;
1590 :     } else {
1591 : edgomez 1.47 decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward);
1592 : edgomez 1.51 decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant);
1593 : edgomez 1.47 }
1594 :    
1595 :     output = 1;
1596 :     dec->frames++;
1597 : chenm001 1.14 }
1598 :    
1599 : edgomez 1.51 #if 0 /* Avoids to read to much data because of 32bit reads in our BS functions */
1600 :     BitstreamByteAlign(&bs);
1601 :     #endif
1602 : edgomez 1.47
1603 :     /* low_delay_default mode: repeat in packed_mode */
1604 : edgomez 1.51 if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) {
1605 : edgomez 1.47 success = 1;
1606 :     goto repeat;
1607 :     }
1608 :    
1609 :     done :
1610 :    
1611 :     /* low_delay_default mode: if we've gotten here without outputting anything,
1612 :     then output the recently decoded frame, or print an error message */
1613 : edgomez 1.51 if (dec->low_delay_default && output == 0) {
1614 :     if (dec->packed_mode && seen_something) {
1615 : edgomez 1.47 /* output the recently decoded frame */
1616 : edgomez 1.51 decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant);
1617 :     } else {
1618 : edgomez 1.47 image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128);
1619 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16,
1620 :     "warning: nothing to output");
1621 :     image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64,
1622 :     "bframe decoder lag");
1623 :    
1624 : edgomez 1.51 decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP, quant);
1625 :     if (stats) stats->type = XVID_TYPE_NOTHING;
1626 : edgomez 1.47 }
1627 :     }
1628 : Isibaar 1.50
1629 : Isibaar 1.1 emms();
1630 :     stop_global_timer();
1631 :    
1632 : edgomez 1.51 return (BitstreamPos(&bs) + 7) / 8; /* number of bytes consumed */
1633 : Isibaar 1.1 }

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