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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 : | Isibaar | 1.72 | * $Id: decoder.c,v 1.71 2005/05/23 09:29:43 Skal 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/font.h" |
50 : | edgomez | 1.62 | #include "image/qpel.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 : | Skal | 1.70 | image_null(&dec->cur); |
77 : | image_null(&dec->refn[0]); | ||
78 : | image_null(&dec->refn[1]); | ||
79 : | image_null(&dec->tmp); | ||
80 : | image_null(&dec->qtmp); | ||
81 : | image_null(&dec->gmc); | ||
82 : | |||
83 : | |||
84 : | xvid_free(dec->last_mbs); | ||
85 : | xvid_free(dec->mbs); | ||
86 : | xvid_free(dec->qscale); | ||
87 : | dec->last_mbs = NULL; | ||
88 : | dec->mbs = NULL; | ||
89 : | dec->qscale = NULL; | ||
90 : | Isibaar | 1.1 | |
91 : | edgomez | 1.47 | /* realloc */ |
92 : | Isibaar | 1.1 | dec->mb_width = (dec->width + 15) / 16; |
93 : | dec->mb_height = (dec->height + 15) / 16; | ||
94 : | |||
95 : | dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; | ||
96 : | dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; | ||
97 : | edgomez | 1.19 | |
98 : | Skal | 1.70 | if ( image_create(&dec->cur, dec->edged_width, dec->edged_height) |
99 : | || image_create(&dec->refn[0], dec->edged_width, dec->edged_height) | ||
100 : | || image_create(&dec->refn[1], dec->edged_width, dec->edged_height) /* Support B-frame to reference last 2 frame */ | ||
101 : | || image_create(&dec->tmp, dec->edged_width, dec->edged_height) | ||
102 : | || image_create(&dec->qtmp, dec->edged_width, dec->edged_height) | ||
103 : | || image_create(&dec->gmc, dec->edged_width, dec->edged_height) ) | ||
104 : | goto memory_error; | ||
105 : | Isibaar | 1.1 | |
106 : | edgomez | 1.19 | dec->mbs = |
107 : | xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, | ||
108 : | CACHE_LINE); | ||
109 : | Skal | 1.70 | if (dec->mbs == NULL) |
110 : | goto memory_error; | ||
111 : | Isibaar | 1.20 | memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
112 : | |||
113 : | edgomez | 1.48 | /* For skip MB flag */ |
114 : | edgomez | 1.19 | dec->last_mbs = |
115 : | xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, | ||
116 : | CACHE_LINE); | ||
117 : | Skal | 1.70 | if (dec->last_mbs == NULL) |
118 : | goto memory_error; | ||
119 : | Isibaar | 1.20 | memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
120 : | Isibaar | 1.1 | |
121 : | edgomez | 1.51 | /* nothing happens if that fails */ |
122 : | dec->qscale = | ||
123 : | xvid_malloc(sizeof(int) * dec->mb_width * dec->mb_height, CACHE_LINE); | ||
124 : | |||
125 : | if (dec->qscale) | ||
126 : | memset(dec->qscale, 0, sizeof(int) * dec->mb_width * dec->mb_height); | ||
127 : | |||
128 : | return 0; | ||
129 : | Skal | 1.70 | |
130 : | memory_error: | ||
131 : | /* Most structures were deallocated / nullifieded, so it should be safe */ | ||
132 : | /* decoder_destroy(dec) minus the write_timer */ | ||
133 : | xvid_free(dec->mbs); | ||
134 : | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); | ||
135 : | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); | ||
136 : | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); | ||
137 : | image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); | ||
138 : | image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); | ||
139 : | |||
140 : | xvid_free(dec); | ||
141 : | return XVID_ERR_MEMORY; | ||
142 : | edgomez | 1.47 | } |
143 : | |||
144 : | |||
145 : | int | ||
146 : | edgomez | 1.51 | decoder_create(xvid_dec_create_t * create) |
147 : | edgomez | 1.47 | { |
148 : | DECODER *dec; | ||
149 : | |||
150 : | edgomez | 1.51 | if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */ |
151 : | return XVID_ERR_VERSION; | ||
152 : | |||
153 : | edgomez | 1.47 | dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
154 : | if (dec == NULL) { | ||
155 : | return XVID_ERR_MEMORY; | ||
156 : | } | ||
157 : | edgomez | 1.51 | |
158 : | edgomez | 1.47 | memset(dec, 0, sizeof(DECODER)); |
159 : | |||
160 : | edgomez | 1.51 | dec->mpeg_quant_matrices = xvid_malloc(sizeof(uint16_t) * 64 * 8, CACHE_LINE); |
161 : | if (dec->mpeg_quant_matrices == NULL) { | ||
162 : | xvid_free(dec); | ||
163 : | return XVID_ERR_MEMORY; | ||
164 : | } | ||
165 : | |||
166 : | create->handle = dec; | ||
167 : | edgomez | 1.47 | |
168 : | edgomez | 1.51 | dec->width = create->width; |
169 : | dec->height = create->height; | ||
170 : | edgomez | 1.47 | |
171 : | image_null(&dec->cur); | ||
172 : | image_null(&dec->refn[0]); | ||
173 : | image_null(&dec->refn[1]); | ||
174 : | image_null(&dec->tmp); | ||
175 : | image_null(&dec->qtmp); | ||
176 : | |||
177 : | edgomez | 1.48 | /* image based GMC */ |
178 : | edgomez | 1.47 | image_null(&dec->gmc); |
179 : | |||
180 : | dec->mbs = NULL; | ||
181 : | dec->last_mbs = NULL; | ||
182 : | edgomez | 1.51 | dec->qscale = NULL; |
183 : | edgomez | 1.47 | |
184 : | Isibaar | 1.1 | init_timer(); |
185 : | edgomez | 1.51 | init_postproc(&dec->postproc); |
186 : | init_mpeg_matrix(dec->mpeg_quant_matrices); | ||
187 : | Isibaar | 1.1 | |
188 : | edgomez | 1.48 | /* For B-frame support (used to save reference frame's time */ |
189 : | edgomez | 1.47 | dec->frames = 0; |
190 : | chenm001 | 1.14 | dec->time = dec->time_base = dec->last_time_base = 0; |
191 : | edgomez | 1.47 | dec->low_delay = 0; |
192 : | dec->packed_mode = 0; | ||
193 : | syskin | 1.56 | dec->time_inc_resolution = 1; /* until VOL header says otherwise */ |
194 : | edgomez | 1.47 | |
195 : | dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); | ||
196 : | edgomez | 1.19 | |
197 : | edgomez | 1.47 | if (dec->fixed_dimensions) |
198 : | return decoder_resize(dec); | ||
199 : | else | ||
200 : | edgomez | 1.51 | return 0; |
201 : | Isibaar | 1.1 | } |
202 : | |||
203 : | |||
204 : | edgomez | 1.19 | int |
205 : | decoder_destroy(DECODER * dec) | ||
206 : | Isibaar | 1.1 | { |
207 : | chenm001 | 1.14 | xvid_free(dec->last_mbs); |
208 : | Isibaar | 1.3 | xvid_free(dec->mbs); |
209 : | edgomez | 1.51 | xvid_free(dec->qscale); |
210 : | edgomez | 1.47 | |
211 : | edgomez | 1.48 | /* image based GMC */ |
212 : | image_destroy(&dec->gmc, dec->edged_width, dec->edged_height); | ||
213 : | edgomez | 1.47 | |
214 : | chenm001 | 1.11 | image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
215 : | chenm001 | 1.14 | image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
216 : | edgomez | 1.47 | image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
217 : | image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); | ||
218 : | Isibaar | 1.1 | image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
219 : | edgomez | 1.51 | xvid_free(dec->mpeg_quant_matrices); |
220 : | Isibaar | 1.3 | xvid_free(dec); |
221 : | Isibaar | 1.1 | |
222 : | write_timer(); | ||
223 : | edgomez | 1.51 | return 0; |
224 : | Isibaar | 1.1 | } |
225 : | |||
226 : | edgomez | 1.19 | static const int32_t dquant_table[4] = { |
227 : | Isibaar | 1.1 | -1, -2, 1, 2 |
228 : | }; | ||
229 : | |||
230 : | edgomez | 1.48 | /* decode an intra macroblock */ |
231 : | edgomez | 1.51 | static void |
232 : | edgomez | 1.19 | decoder_mbintra(DECODER * dec, |
233 : | MACROBLOCK * pMB, | ||
234 : | const uint32_t x_pos, | ||
235 : | const uint32_t y_pos, | ||
236 : | const uint32_t acpred_flag, | ||
237 : | const uint32_t cbp, | ||
238 : | Bitstream * bs, | ||
239 : | const uint32_t quant, | ||
240 : | chenm001 | 1.26 | const uint32_t intra_dc_threshold, |
241 : | syskin | 1.68 | const unsigned int bound) |
242 : | Isibaar | 1.1 | { |
243 : | edgomez | 1.7 | |
244 : | DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); | ||
245 : | edgomez | 1.19 | DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
246 : | edgomez | 1.7 | |
247 : | h | 1.8 | uint32_t stride = dec->edged_width; |
248 : | uint32_t stride2 = stride / 2; | ||
249 : | uint32_t next_block = stride * 8; | ||
250 : | h | 1.5 | uint32_t i; |
251 : | uint32_t iQuant = pMB->quant; | ||
252 : | uint8_t *pY_Cur, *pU_Cur, *pV_Cur; | ||
253 : | |||
254 : | syskin | 1.68 | pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
255 : | pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); | ||
256 : | pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
257 : | edgomez | 1.7 | |
258 : | edgomez | 1.48 | memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */ |
259 : | h | 1.5 | |
260 : | edgomez | 1.19 | for (i = 0; i < 6; i++) { |
261 : | h | 1.5 | uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
262 : | Isibaar | 1.1 | int16_t predictors[8]; |
263 : | int start_coeff; | ||
264 : | |||
265 : | start_timer(); | ||
266 : | edgomez | 1.19 | predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
267 : | edgomez | 1.59 | iQuant, iDcScaler, predictors, bound); |
268 : | edgomez | 1.19 | if (!acpred_flag) { |
269 : | h | 1.5 | pMB->acpred_directions[i] = 0; |
270 : | Isibaar | 1.1 | } |
271 : | stop_prediction_timer(); | ||
272 : | |||
273 : | edgomez | 1.19 | if (quant < intra_dc_threshold) { |
274 : | Isibaar | 1.1 | int dc_size; |
275 : | int dc_dif; | ||
276 : | |||
277 : | edgomez | 1.19 | dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
278 : | dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; | ||
279 : | Isibaar | 1.1 | |
280 : | edgomez | 1.19 | if (dc_size > 8) { |
281 : | edgomez | 1.48 | BitstreamSkip(bs, 1); /* marker */ |
282 : | Isibaar | 1.1 | } |
283 : | edgomez | 1.19 | |
284 : | block[i * 64 + 0] = dc_dif; | ||
285 : | Isibaar | 1.1 | start_coeff = 1; |
286 : | chenm001 | 1.26 | |
287 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif); |
288 : | edgomez | 1.19 | } else { |
289 : | Isibaar | 1.1 | start_coeff = 0; |
290 : | } | ||
291 : | |||
292 : | start_timer(); | ||
293 : | edgomez | 1.48 | if (cbp & (1 << (5 - i))) /* coded */ |
294 : | Isibaar | 1.1 | { |
295 : | edgomez | 1.47 | int direction = dec->alternate_vertical_scan ? |
296 : | 2 : pMB->acpred_directions[i]; | ||
297 : | |||
298 : | get_intra_block(bs, &block[i * 64], direction, start_coeff); | ||
299 : | Isibaar | 1.1 | } |
300 : | stop_coding_timer(); | ||
301 : | |||
302 : | start_timer(); | ||
303 : | edgomez | 1.59 | add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors, dec->bs_version); |
304 : | Isibaar | 1.1 | stop_prediction_timer(); |
305 : | |||
306 : | start_timer(); | ||
307 : | edgomez | 1.19 | if (dec->quant_type == 0) { |
308 : | edgomez | 1.51 | dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices); |
309 : | edgomez | 1.19 | } else { |
310 : | edgomez | 1.51 | dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices); |
311 : | Isibaar | 1.1 | } |
312 : | stop_iquant_timer(); | ||
313 : | |||
314 : | start_timer(); | ||
315 : | edgomez | 1.19 | idct(&data[i * 64]); |
316 : | Isibaar | 1.1 | stop_idct_timer(); |
317 : | edgomez | 1.47 | |
318 : | h | 1.5 | } |
319 : | Isibaar | 1.1 | |
320 : | edgomez | 1.19 | if (dec->interlacing && pMB->field_dct) { |
321 : | h | 1.8 | next_block = stride; |
322 : | stride *= 2; | ||
323 : | Isibaar | 1.1 | } |
324 : | h | 1.5 | |
325 : | start_timer(); | ||
326 : | syskin | 1.68 | transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
327 : | transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); | ||
328 : | transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); | ||
329 : | transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); | ||
330 : | transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); | ||
331 : | transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); | ||
332 : | h | 1.5 | stop_transfer_timer(); |
333 : | Isibaar | 1.1 | } |
334 : | |||
335 : | edgomez | 1.51 | static void |
336 : | decoder_mb_decode(DECODER * dec, | ||
337 : | const uint32_t cbp, | ||
338 : | Bitstream * bs, | ||
339 : | uint8_t * pY_Cur, | ||
340 : | uint8_t * pU_Cur, | ||
341 : | uint8_t * pV_Cur, | ||
342 : | const MACROBLOCK * pMB) | ||
343 : | { | ||
344 : | edgomez | 1.64 | DECLARE_ALIGNED_MATRIX(data, 1, 64, int16_t, CACHE_LINE); |
345 : | edgomez | 1.51 | |
346 : | int stride = dec->edged_width; | ||
347 : | syskin | 1.68 | int next_block = stride * 8; |
348 : | edgomez | 1.51 | int i; |
349 : | const uint32_t iQuant = pMB->quant; | ||
350 : | const int direction = dec->alternate_vertical_scan ? 2 : 0; | ||
351 : | edgomez | 1.61 | typedef void (*get_inter_block_function_t)( |
352 : | Bitstream * bs, | ||
353 : | int16_t * block, | ||
354 : | int direction, | ||
355 : | const int quant, | ||
356 : | const uint16_t *matrix); | ||
357 : | edgomez | 1.64 | typedef void (*add_residual_function_t)( |
358 : | uint8_t *predicted_block, | ||
359 : | const int16_t *residual, | ||
360 : | int stride); | ||
361 : | edgomez | 1.61 | |
362 : | const get_inter_block_function_t get_inter_block = (dec->quant_type == 0) | ||
363 : | edgomez | 1.64 | ? (get_inter_block_function_t)get_inter_block_h263 |
364 : | : (get_inter_block_function_t)get_inter_block_mpeg; | ||
365 : | |||
366 : | uint8_t *dst[6]; | ||
367 : | int strides[6]; | ||
368 : | edgomez | 1.61 | |
369 : | edgomez | 1.51 | |
370 : | edgomez | 1.64 | if (dec->interlacing && pMB->field_dct) { |
371 : | next_block = stride; | ||
372 : | stride *= 2; | ||
373 : | } | ||
374 : | |||
375 : | dst[0] = pY_Cur; | ||
376 : | dst[2] = pY_Cur + next_block; | ||
377 : | syskin | 1.68 | dst[1] = dst[0] + 8; |
378 : | dst[3] = dst[2] + 8; | ||
379 : | edgomez | 1.64 | dst[4] = pU_Cur; |
380 : | dst[5] = pV_Cur; | ||
381 : | strides[0] = strides[1] = strides[2] = strides[3] = stride; | ||
382 : | strides[4] = stride/2; | ||
383 : | strides[5] = stride/2; | ||
384 : | |||
385 : | edgomez | 1.51 | for (i = 0; i < 6; i++) { |
386 : | edgomez | 1.64 | /* Process only coded blocks */ |
387 : | if (cbp & (1 << (5 - i))) { | ||
388 : | edgomez | 1.51 | |
389 : | edgomez | 1.64 | /* Clear the block */ |
390 : | memset(&data[0], 0, 64*sizeof(int16_t)); | ||
391 : | edgomez | 1.51 | |
392 : | edgomez | 1.61 | /* Decode coeffs and dequantize on the fly */ |
393 : | edgomez | 1.51 | start_timer(); |
394 : | edgomez | 1.64 | get_inter_block(bs, &data[0], direction, iQuant, get_inter_matrix(dec->mpeg_quant_matrices)); |
395 : | edgomez | 1.51 | stop_coding_timer(); |
396 : | |||
397 : | edgomez | 1.64 | /* iDCT */ |
398 : | edgomez | 1.51 | start_timer(); |
399 : | edgomez | 1.64 | idct(&data[0]); |
400 : | edgomez | 1.51 | stop_idct_timer(); |
401 : | edgomez | 1.64 | |
402 : | /* Add this residual to the predicted block */ | ||
403 : | start_timer(); | ||
404 : | syskin | 1.68 | transfer_16to8add(dst[i], &data[0], strides[i]); |
405 : | edgomez | 1.64 | stop_transfer_timer(); |
406 : | edgomez | 1.51 | } |
407 : | } | ||
408 : | } | ||
409 : | Isibaar | 1.1 | |
410 : | edgomez | 1.67 | static void __inline |
411 : | syskin | 1.66 | validate_vector(VECTOR * mv, unsigned int x_pos, unsigned int y_pos, const DECODER * dec) |
412 : | { | ||
413 : | /* clip a vector to valid range | ||
414 : | prevents crashes if bitstream is broken | ||
415 : | */ | ||
416 : | edgomez | 1.67 | int shift = 5 + dec->quarterpel; |
417 : | int xborder_high = (int)(dec->mb_width - x_pos) << shift; | ||
418 : | int xborder_low = (-(int)x_pos-1) << shift; | ||
419 : | int yborder_high = (int)(dec->mb_height - y_pos) << shift; | ||
420 : | int yborder_low = (-(int)y_pos-1) << shift; | ||
421 : | |||
422 : | #define CHECK_MV(mv) \ | ||
423 : | do { \ | ||
424 : | if ((mv).x > xborder_high) { \ | ||
425 : | DPRINTF(XVID_DEBUG_MV, "mv.x > max -- %d > %d, MB %d, %d", (mv).x, xborder_high, x_pos, y_pos); \ | ||
426 : | (mv).x = xborder_high; \ | ||
427 : | } else if ((mv).x < xborder_low) { \ | ||
428 : | DPRINTF(XVID_DEBUG_MV, "mv.x < min -- %d < %d, MB %d, %d", (mv).x, xborder_low, x_pos, y_pos); \ | ||
429 : | (mv).x = xborder_low; \ | ||
430 : | } \ | ||
431 : | if ((mv).y > yborder_high) { \ | ||
432 : | DPRINTF(XVID_DEBUG_MV, "mv.y > max -- %d > %d, MB %d, %d", (mv).y, yborder_high, x_pos, y_pos); \ | ||
433 : | (mv).y = yborder_high; \ | ||
434 : | } else if ((mv).y < yborder_low) { \ | ||
435 : | DPRINTF(XVID_DEBUG_MV, "mv.y < min -- %d < %d, MB %d, %d", (mv).y, yborder_low, x_pos, y_pos); \ | ||
436 : | (mv).y = yborder_low; \ | ||
437 : | } \ | ||
438 : | } while (0) | ||
439 : | |||
440 : | CHECK_MV(mv[0]); | ||
441 : | CHECK_MV(mv[1]); | ||
442 : | CHECK_MV(mv[2]); | ||
443 : | CHECK_MV(mv[3]); | ||
444 : | syskin | 1.66 | } |
445 : | |||
446 : | Isibaar | 1.72 | /* Up to this version, chroma rounding was wrong with qpel. |
447 : | * So we try to be backward compatible to avoid artifacts */ | ||
448 : | #define BS_VERSION_BUGGY_CHROMA_ROUNDING 1 | ||
449 : | |||
450 : | edgomez | 1.48 | /* decode an inter macroblock */ |
451 : | edgomez | 1.51 | static void |
452 : | edgomez | 1.19 | decoder_mbinter(DECODER * dec, |
453 : | const MACROBLOCK * pMB, | ||
454 : | const uint32_t x_pos, | ||
455 : | const uint32_t y_pos, | ||
456 : | const uint32_t cbp, | ||
457 : | Bitstream * bs, | ||
458 : | edgomez | 1.47 | const uint32_t rounding, |
459 : | edgomez | 1.51 | const int ref) |
460 : | Isibaar | 1.1 | { |
461 : | h | 1.8 | uint32_t stride = dec->edged_width; |
462 : | uint32_t stride2 = stride / 2; | ||
463 : | edgomez | 1.7 | uint32_t i; |
464 : | edgomez | 1.51 | |
465 : | h | 1.5 | uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
466 : | edgomez | 1.47 | |
467 : | Isibaar | 1.1 | int uv_dx, uv_dy; |
468 : | edgomez | 1.47 | VECTOR mv[4]; /* local copy of mvs */ |
469 : | |||
470 : | syskin | 1.68 | pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
471 : | pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); | ||
472 : | pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
473 : | for (i = 0; i < 4; i++) | ||
474 : | mv[i] = pMB->mvs[i]; | ||
475 : | edgomez | 1.47 | |
476 : | syskin | 1.66 | validate_vector(mv, x_pos, y_pos, dec); |
477 : | syskin | 1.54 | |
478 : | edgomez | 1.51 | start_timer(); |
479 : | |||
480 : | if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ | ||
481 : | |||
482 : | uv_dx = mv[0].x; | ||
483 : | uv_dy = mv[0].y; | ||
484 : | if (dec->quarterpel) { | ||
485 : | Isibaar | 1.72 | if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
486 : | uv_dx = (uv_dx>>1) | (uv_dx&1); | ||
487 : | uv_dy = (uv_dy>>1) | (uv_dy&1); | ||
488 : | } | ||
489 : | else { | ||
490 : | uv_dx /= 2; | ||
491 : | uv_dy /= 2; | ||
492 : | } | ||
493 : | edgomez | 1.51 | } |
494 : | edgomez | 1.47 | uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; |
495 : | uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; | ||
496 : | |||
497 : | syskin | 1.68 | if (dec->quarterpel) |
498 : | edgomez | 1.51 | interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64, |
499 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, | ||
500 : | mv[0].x, mv[0].y, stride, rounding); | ||
501 : | edgomez | 1.47 | else |
502 : | edgomez | 1.51 | interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos, |
503 : | mv[0].x, mv[0].y, stride, rounding); | ||
504 : | Isibaar | 1.1 | |
505 : | edgomez | 1.47 | } else { /* MODE_INTER4V */ |
506 : | |||
507 : | edgomez | 1.51 | if(dec->quarterpel) { |
508 : | Isibaar | 1.72 | if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
509 : | int z; | ||
510 : | uv_dx = 0; uv_dy = 0; | ||
511 : | for (z = 0; z < 4; z++) { | ||
512 : | uv_dx += ((mv[z].x>>1) | (mv[z].x&1)); | ||
513 : | uv_dy += ((mv[z].y>>1) | (mv[z].y&1)); | ||
514 : | } | ||
515 : | } | ||
516 : | else { | ||
517 : | uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2); | ||
518 : | uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2); | ||
519 : | } | ||
520 : | edgomez | 1.51 | } else { |
521 : | uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x; | ||
522 : | uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y; | ||
523 : | } | ||
524 : | edgomez | 1.47 | |
525 : | edgomez | 1.51 | uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; |
526 : | uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf]; | ||
527 : | edgomez | 1.47 | |
528 : | syskin | 1.68 | if (dec->quarterpel) { |
529 : | edgomez | 1.51 | interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64, |
530 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, | ||
531 : | mv[0].x, mv[0].y, stride, rounding); | ||
532 : | interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64, | ||
533 : | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, | ||
534 : | mv[1].x, mv[1].y, stride, rounding); | ||
535 : | interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64, | ||
536 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, | ||
537 : | mv[2].x, mv[2].y, stride, rounding); | ||
538 : | interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y , dec->qtmp.y, dec->qtmp.y + 64, | ||
539 : | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, | ||
540 : | mv[3].x, mv[3].y, stride, rounding); | ||
541 : | } else { | ||
542 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos, | ||
543 : | mv[0].x, mv[0].y, stride, rounding); | ||
544 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos, | ||
545 : | mv[1].x, mv[1].y, stride, rounding); | ||
546 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos, 16*y_pos + 8, | ||
547 : | mv[2].x, mv[2].y, stride, rounding); | ||
548 : | interpolate8x8_switch(dec->cur.y, dec->refn[0].y , 16*x_pos + 8, 16*y_pos + 8, | ||
549 : | mv[3].x, mv[3].y, stride, rounding); | ||
550 : | edgomez | 1.47 | } |
551 : | } | ||
552 : | |||
553 : | edgomez | 1.51 | /* chroma */ |
554 : | syskin | 1.68 | interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
555 : | uv_dx, uv_dy, stride2, rounding); | ||
556 : | interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, | ||
557 : | uv_dx, uv_dy, stride2, rounding); | ||
558 : | Isibaar | 1.1 | |
559 : | edgomez | 1.51 | stop_comp_timer(); |
560 : | edgomez | 1.47 | |
561 : | edgomez | 1.51 | if (cbp) |
562 : | syskin | 1.68 | decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, pMB); |
563 : | edgomez | 1.47 | } |
564 : | |||
565 : | static void | ||
566 : | decoder_mbgmc(DECODER * dec, | ||
567 : | MACROBLOCK * const pMB, | ||
568 : | const uint32_t x_pos, | ||
569 : | const uint32_t y_pos, | ||
570 : | const uint32_t fcode, | ||
571 : | const uint32_t cbp, | ||
572 : | Bitstream * bs, | ||
573 : | edgomez | 1.51 | const uint32_t rounding) |
574 : | edgomez | 1.47 | { |
575 : | const uint32_t stride = dec->edged_width; | ||
576 : | const uint32_t stride2 = stride / 2; | ||
577 : | edgomez | 1.51 | |
578 : | edgomez | 1.47 | uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
579 : | uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); | ||
580 : | uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
581 : | |||
582 : | edgomez | 1.51 | NEW_GMC_DATA * gmc_data = &dec->new_gmc_data; |
583 : | |||
584 : | edgomez | 1.47 | pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv; |
585 : | Isibaar | 1.1 | |
586 : | start_timer(); | ||
587 : | edgomez | 1.51 | |
588 : | edgomez | 1.47 | /* this is where the calculations are done */ |
589 : | |||
590 : | edgomez | 1.51 | gmc_data->predict_16x16(gmc_data, |
591 : | dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y, | ||
592 : | stride, stride, x_pos, y_pos, rounding); | ||
593 : | |||
594 : | gmc_data->predict_8x8(gmc_data, | ||
595 : | dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u, | ||
596 : | dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v, | ||
597 : | stride2, stride2, x_pos, y_pos, rounding); | ||
598 : | edgomez | 1.47 | |
599 : | edgomez | 1.51 | gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel); |
600 : | Isibaar | 1.1 | |
601 : | edgomez | 1.51 | pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode); |
602 : | pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode); | ||
603 : | edgomez | 1.47 | |
604 : | edgomez | 1.51 | pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv; |
605 : | Isibaar | 1.1 | |
606 : | edgomez | 1.51 | stop_transfer_timer(); |
607 : | Isibaar | 1.1 | |
608 : | edgomez | 1.51 | if (cbp) |
609 : | syskin | 1.68 | decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, pMB); |
610 : | Isibaar | 1.1 | |
611 : | } | ||
612 : | |||
613 : | |||
614 : | edgomez | 1.51 | static void |
615 : | edgomez | 1.19 | decoder_iframe(DECODER * dec, |
616 : | edgomez | 1.51 | Bitstream * bs, |
617 : | int quant, | ||
618 : | int intra_dc_threshold) | ||
619 : | Isibaar | 1.1 | { |
620 : | chenm001 | 1.26 | uint32_t bound; |
621 : | uint32_t x, y; | ||
622 : | syskin | 1.68 | const uint32_t mb_width = dec->mb_width; |
623 : | const uint32_t mb_height = dec->mb_height; | ||
624 : | chenm001 | 1.25 | |
625 : | chenm001 | 1.26 | bound = 0; |
626 : | edgomez | 1.7 | |
627 : | edgomez | 1.47 | for (y = 0; y < mb_height; y++) { |
628 : | for (x = 0; x < mb_width; x++) { | ||
629 : | chenm001 | 1.26 | MACROBLOCK *mb; |
630 : | Isibaar | 1.1 | uint32_t mcbpc; |
631 : | uint32_t cbpc; | ||
632 : | uint32_t acpred_flag; | ||
633 : | uint32_t cbpy; | ||
634 : | uint32_t cbp; | ||
635 : | |||
636 : | chenm001 | 1.26 | while (BitstreamShowBits(bs, 9) == 1) |
637 : | BitstreamSkip(bs, 9); | ||
638 : | |||
639 : | if (check_resync_marker(bs, 0)) | ||
640 : | { | ||
641 : | edgomez | 1.51 | bound = read_video_packet_header(bs, dec, 0, |
642 : | edgomez | 1.47 | &quant, NULL, NULL, &intra_dc_threshold); |
643 : | x = bound % mb_width; | ||
644 : | y = bound / mb_width; | ||
645 : | chenm001 | 1.26 | } |
646 : | mb = &dec->mbs[y * dec->mb_width + x]; | ||
647 : | |||
648 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32)); |
649 : | chenm001 | 1.26 | |
650 : | Isibaar | 1.1 | mcbpc = get_mcbpc_intra(bs); |
651 : | mb->mode = mcbpc & 7; | ||
652 : | cbpc = (mcbpc >> 4); | ||
653 : | |||
654 : | acpred_flag = BitstreamGetBit(bs); | ||
655 : | |||
656 : | cbpy = get_cbpy(bs, 1); | ||
657 : | cbp = (cbpy << 2) | cbpc; | ||
658 : | |||
659 : | edgomez | 1.19 | if (mb->mode == MODE_INTRA_Q) { |
660 : | quant += dquant_table[BitstreamGetBits(bs, 2)]; | ||
661 : | if (quant > 31) { | ||
662 : | Isibaar | 1.1 | quant = 31; |
663 : | edgomez | 1.19 | } else if (quant < 1) { |
664 : | Isibaar | 1.1 | quant = 1; |
665 : | } | ||
666 : | } | ||
667 : | mb->quant = quant; | ||
668 : | chenm001 | 1.30 | mb->mvs[0].x = mb->mvs[0].y = |
669 : | mb->mvs[1].x = mb->mvs[1].y = | ||
670 : | mb->mvs[2].x = mb->mvs[2].y = | ||
671 : | mb->mvs[3].x = mb->mvs[3].y =0; | ||
672 : | h | 1.5 | |
673 : | edgomez | 1.19 | if (dec->interlacing) { |
674 : | h | 1.5 | mb->field_dct = BitstreamGetBit(bs); |
675 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct); |
676 : | h | 1.5 | } |
677 : | Isibaar | 1.1 | |
678 : | edgomez | 1.19 | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
679 : | syskin | 1.68 | intra_dc_threshold, bound); |
680 : | edgomez | 1.47 | |
681 : | Isibaar | 1.1 | } |
682 : | albeu | 1.32 | if(dec->out_frm) |
683 : | edgomez | 1.51 | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width); |
684 : | Isibaar | 1.1 | } |
685 : | edgomez | 1.7 | |
686 : | Isibaar | 1.1 | } |
687 : | |||
688 : | |||
689 : | edgomez | 1.51 | static void |
690 : | edgomez | 1.19 | get_motion_vector(DECODER * dec, |
691 : | edgomez | 1.51 | Bitstream * bs, |
692 : | int x, | ||
693 : | int y, | ||
694 : | int k, | ||
695 : | VECTOR * ret_mv, | ||
696 : | int fcode, | ||
697 : | const int bound) | ||
698 : | Isibaar | 1.1 | { |
699 : | edgomez | 1.7 | |
700 : | edgomez | 1.51 | const int scale_fac = 1 << (fcode - 1); |
701 : | const int high = (32 * scale_fac) - 1; | ||
702 : | const int low = ((-32) * scale_fac); | ||
703 : | const int range = (64 * scale_fac); | ||
704 : | Isibaar | 1.1 | |
705 : | edgomez | 1.51 | const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
706 : | edgomez | 1.47 | VECTOR mv; |
707 : | Isibaar | 1.1 | |
708 : | edgomez | 1.47 | mv.x = get_mv(bs, fcode); |
709 : | mv.y = get_mv(bs, fcode); | ||
710 : | edgomez | 1.19 | |
711 : | 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); |
712 : | chenm001 | 1.26 | |
713 : | edgomez | 1.47 | mv.x += pmv.x; |
714 : | mv.y += pmv.y; | ||
715 : | Isibaar | 1.1 | |
716 : | edgomez | 1.47 | if (mv.x < low) { |
717 : | mv.x += range; | ||
718 : | } else if (mv.x > high) { | ||
719 : | mv.x -= range; | ||
720 : | Isibaar | 1.1 | } |
721 : | |||
722 : | edgomez | 1.47 | if (mv.y < low) { |
723 : | mv.y += range; | ||
724 : | } else if (mv.y > high) { | ||
725 : | mv.y -= range; | ||
726 : | Isibaar | 1.1 | } |
727 : | |||
728 : | edgomez | 1.51 | ret_mv->x = mv.x; |
729 : | ret_mv->y = mv.y; | ||
730 : | } | ||
731 : | Isibaar | 1.1 | |
732 : | edgomez | 1.47 | /* for P_VOP set gmc_warp to NULL */ |
733 : | edgomez | 1.51 | static void |
734 : | edgomez | 1.19 | decoder_pframe(DECODER * dec, |
735 : | edgomez | 1.51 | Bitstream * bs, |
736 : | int rounding, | ||
737 : | int quant, | ||
738 : | int fcode, | ||
739 : | int intra_dc_threshold, | ||
740 : | const WARPPOINTS *const gmc_warp) | ||
741 : | Isibaar | 1.1 | { |
742 : | uint32_t x, y; | ||
743 : | chenm001 | 1.26 | uint32_t bound; |
744 : | albeu | 1.32 | int cp_mb, st_mb; |
745 : | syskin | 1.68 | const uint32_t mb_width = dec->mb_width; |
746 : | const uint32_t mb_height = dec->mb_height; | ||
747 : | Isibaar | 1.1 | |
748 : | edgomez | 1.57 | if (!dec->is_edged[0]) { |
749 : | start_timer(); | ||
750 : | image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, | ||
751 : | dec->width, dec->height, dec->bs_version); | ||
752 : | dec->is_edged[0] = 1; | ||
753 : | stop_edges_timer(); | ||
754 : | } | ||
755 : | Isibaar | 1.1 | |
756 : | edgomez | 1.51 | if (gmc_warp) { |
757 : | /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ | ||
758 : | generate_GMCparameters( dec->sprite_warping_points, | ||
759 : | dec->sprite_warping_accuracy, gmc_warp, | ||
760 : | dec->width, dec->height, &dec->new_gmc_data); | ||
761 : | edgomez | 1.47 | |
762 : | edgomez | 1.51 | /* image warping is done block-based in decoder_mbgmc(), now */ |
763 : | edgomez | 1.47 | } |
764 : | |||
765 : | chenm001 | 1.26 | bound = 0; |
766 : | |||
767 : | edgomez | 1.47 | for (y = 0; y < mb_height; y++) { |
768 : | albeu | 1.32 | cp_mb = st_mb = 0; |
769 : | edgomez | 1.47 | for (x = 0; x < mb_width; x++) { |
770 : | chenm001 | 1.26 | MACROBLOCK *mb; |
771 : | |||
772 : | edgomez | 1.48 | /* skip stuffing */ |
773 : | chenm001 | 1.26 | while (BitstreamShowBits(bs, 10) == 1) |
774 : | BitstreamSkip(bs, 10); | ||
775 : | |||
776 : | edgomez | 1.51 | if (check_resync_marker(bs, fcode - 1)) { |
777 : | bound = read_video_packet_header(bs, dec, fcode - 1, | ||
778 : | edgomez | 1.47 | &quant, &fcode, NULL, &intra_dc_threshold); |
779 : | x = bound % mb_width; | ||
780 : | y = bound / mb_width; | ||
781 : | chenm001 | 1.26 | } |
782 : | mb = &dec->mbs[y * dec->mb_width + x]; | ||
783 : | |||
784 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32)); |
785 : | suxen_drol | 1.23 | |
786 : | edgomez | 1.51 | if (!(BitstreamGetBit(bs))) { /* block _is_ coded */ |
787 : | uint32_t mcbpc, cbpc, cbpy, cbp; | ||
788 : | uint32_t intra, acpred_flag = 0; | ||
789 : | edgomez | 1.48 | int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */ |
790 : | Isibaar | 1.1 | |
791 : | albeu | 1.32 | cp_mb++; |
792 : | Isibaar | 1.1 | mcbpc = get_mcbpc_inter(bs); |
793 : | mb->mode = mcbpc & 7; | ||
794 : | cbpc = (mcbpc >> 4); | ||
795 : | edgomez | 1.51 | |
796 : | DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode); | ||
797 : | DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc); | ||
798 : | Isibaar | 1.1 | |
799 : | intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); | ||
800 : | edgomez | 1.19 | |
801 : | edgomez | 1.47 | if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q)) |
802 : | mcsel = BitstreamGetBit(bs); | ||
803 : | edgomez | 1.51 | else if (intra) |
804 : | acpred_flag = BitstreamGetBit(bs); | ||
805 : | edgomez | 1.47 | |
806 : | chenm001 | 1.26 | cbpy = get_cbpy(bs, intra); |
807 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel); |
808 : | chenm001 | 1.25 | |
809 : | Isibaar | 1.1 | cbp = (cbpy << 2) | cbpc; |
810 : | |||
811 : | edgomez | 1.19 | if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
812 : | chenm001 | 1.26 | int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
813 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant); |
814 : | chenm001 | 1.26 | quant += dquant; |
815 : | edgomez | 1.19 | if (quant > 31) { |
816 : | Isibaar | 1.1 | quant = 31; |
817 : | chenm001 | 1.26 | } else if (quant < 1) { |
818 : | Isibaar | 1.1 | quant = 1; |
819 : | } | ||
820 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant); |
821 : | Isibaar | 1.1 | } |
822 : | mb->quant = quant; | ||
823 : | h | 1.5 | |
824 : | edgomez | 1.19 | if (dec->interlacing) { |
825 : | h | 1.37 | if (cbp || intra) { |
826 : | mb->field_dct = BitstreamGetBit(bs); | ||
827 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct); |
828 : | h | 1.37 | } |
829 : | h | 1.5 | |
830 : | edgomez | 1.51 | if ((mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) && !mcsel) { |
831 : | h | 1.5 | mb->field_pred = BitstreamGetBit(bs); |
832 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred); |
833 : | h | 1.5 | |
834 : | edgomez | 1.19 | if (mb->field_pred) { |
835 : | h | 1.5 | mb->field_for_top = BitstreamGetBit(bs); |
836 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top); |
837 : | h | 1.5 | mb->field_for_bot = BitstreamGetBit(bs); |
838 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot); |
839 : | h | 1.5 | } |
840 : | } | ||
841 : | } | ||
842 : | edgomez | 1.51 | |
843 : | edgomez | 1.47 | if (mcsel) { |
844 : | edgomez | 1.51 | decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding); |
845 : | edgomez | 1.47 | continue; |
846 : | |||
847 : | } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { | ||
848 : | h | 1.5 | |
849 : | edgomez | 1.19 | if (dec->interlacing && mb->field_pred) { |
850 : | edgomez | 1.51 | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
851 : | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode, bound); | ||
852 : | edgomez | 1.19 | } else { |
853 : | edgomez | 1.51 | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
854 : | edgomez | 1.47 | mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
855 : | h | 1.5 | } |
856 : | chl | 1.35 | } else if (mb->mode == MODE_INTER4V ) { |
857 : | chenm001 | 1.26 | get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
858 : | get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); | ||
859 : | get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); | ||
860 : | get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); | ||
861 : | edgomez | 1.51 | } else { /* MODE_INTRA, MODE_INTRA_Q */ |
862 : | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; | ||
863 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; | ||
864 : | edgomez | 1.19 | decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
865 : | syskin | 1.68 | intra_dc_threshold, bound); |
866 : | Isibaar | 1.1 | continue; |
867 : | } | ||
868 : | |||
869 : | syskin | 1.68 | decoder_mbinter(dec, mb, x, y, cbp, bs, rounding, 0); |
870 : | edgomez | 1.47 | |
871 : | edgomez | 1.51 | } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */ |
872 : | edgomez | 1.47 | mb->mode = MODE_NOT_CODED_GMC; |
873 : | edgomez | 1.51 | mb->quant = quant; |
874 : | decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding); | ||
875 : | edgomez | 1.39 | |
876 : | edgomez | 1.47 | if(dec->out_frm && cp_mb > 0) { |
877 : | edgomez | 1.51 | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
878 : | cp_mb = 0; | ||
879 : | edgomez | 1.47 | } |
880 : | st_mb = x+1; | ||
881 : | edgomez | 1.51 | } else { /* not coded P_VOP macroblock */ |
882 : | chenm001 | 1.14 | mb->mode = MODE_NOT_CODED; |
883 : | edgomez | 1.51 | mb->quant = quant; |
884 : | edgomez | 1.47 | |
885 : | Isibaar | 1.1 | mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
886 : | mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; | ||
887 : | |||
888 : | edgomez | 1.51 | decoder_mbinter(dec, mb, x, y, 0, bs, |
889 : | syskin | 1.68 | rounding, 0); |
890 : | edgomez | 1.47 | |
891 : | albeu | 1.32 | if(dec->out_frm && cp_mb > 0) { |
892 : | edgomez | 1.51 | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
893 : | cp_mb = 0; | ||
894 : | albeu | 1.32 | } |
895 : | st_mb = x+1; | ||
896 : | Isibaar | 1.1 | } |
897 : | } | ||
898 : | edgomez | 1.51 | |
899 : | albeu | 1.32 | if(dec->out_frm && cp_mb > 0) |
900 : | edgomez | 1.51 | output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
901 : | Isibaar | 1.1 | } |
902 : | } | ||
903 : | |||
904 : | edgomez | 1.47 | |
905 : | edgomez | 1.48 | /* decode B-frame motion vector */ |
906 : | edgomez | 1.51 | static void |
907 : | get_b_motion_vector(Bitstream * bs, | ||
908 : | edgomez | 1.47 | VECTOR * mv, |
909 : | int fcode, | ||
910 : | edgomez | 1.51 | const VECTOR pmv, |
911 : | const DECODER * const dec, | ||
912 : | const int x, const int y) | ||
913 : | chenm001 | 1.14 | { |
914 : | edgomez | 1.51 | const int scale_fac = 1 << (fcode - 1); |
915 : | const int high = (32 * scale_fac) - 1; | ||
916 : | const int low = ((-32) * scale_fac); | ||
917 : | const int range = (64 * scale_fac); | ||
918 : | edgomez | 1.7 | |
919 : | edgomez | 1.51 | int mv_x = get_mv(bs, fcode); |
920 : | int mv_y = get_mv(bs, fcode); | ||
921 : | Isibaar | 1.1 | |
922 : | edgomez | 1.51 | mv_x += pmv.x; |
923 : | mv_y += pmv.y; | ||
924 : | albeu | 1.32 | |
925 : | edgomez | 1.51 | if (mv_x < low) |
926 : | edgomez | 1.47 | mv_x += range; |
927 : | edgomez | 1.51 | else if (mv_x > high) |
928 : | edgomez | 1.47 | mv_x -= range; |
929 : | |||
930 : | edgomez | 1.51 | if (mv_y < low) |
931 : | edgomez | 1.47 | mv_y += range; |
932 : | edgomez | 1.51 | else if (mv_y > high) |
933 : | edgomez | 1.47 | mv_y -= range; |
934 : | |||
935 : | edgomez | 1.51 | mv->x = mv_x; |
936 : | mv->y = mv_y; | ||
937 : | edgomez | 1.47 | } |
938 : | |||
939 : | edgomez | 1.51 | /* decode an B-frame direct & interpolate macroblock */ |
940 : | static void | ||
941 : | edgomez | 1.47 | decoder_bf_interpolate_mbinter(DECODER * dec, |
942 : | edgomez | 1.51 | IMAGE forward, |
943 : | IMAGE backward, | ||
944 : | syskin | 1.66 | MACROBLOCK * pMB, |
945 : | edgomez | 1.51 | const uint32_t x_pos, |
946 : | const uint32_t y_pos, | ||
947 : | Bitstream * bs, | ||
948 : | const int direct) | ||
949 : | edgomez | 1.47 | { |
950 : | uint32_t stride = dec->edged_width; | ||
951 : | uint32_t stride2 = stride / 2; | ||
952 : | int uv_dx, uv_dy; | ||
953 : | int b_uv_dx, b_uv_dy; | ||
954 : | uint8_t *pY_Cur, *pU_Cur, *pV_Cur; | ||
955 : | edgomez | 1.51 | const uint32_t cbp = pMB->cbp; |
956 : | edgomez | 1.47 | |
957 : | pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); | ||
958 : | pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); | ||
959 : | pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); | ||
960 : | |||
961 : | syskin | 1.66 | validate_vector(pMB->mvs, x_pos, y_pos, dec); |
962 : | validate_vector(pMB->b_mvs, x_pos, y_pos, dec); | ||
963 : | |||
964 : | edgomez | 1.51 | if (!direct) { |
965 : | edgomez | 1.47 | uv_dx = pMB->mvs[0].x; |
966 : | uv_dy = pMB->mvs[0].y; | ||
967 : | b_uv_dx = pMB->b_mvs[0].x; | ||
968 : | b_uv_dy = pMB->b_mvs[0].y; | ||
969 : | |||
970 : | edgomez | 1.51 | if (dec->quarterpel) { |
971 : | Isibaar | 1.72 | if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
972 : | uv_dx = (uv_dx>>1) | (uv_dx&1); | ||
973 : | uv_dy = (uv_dy>>1) | (uv_dy&1); | ||
974 : | b_uv_dx = (b_uv_dx>>1) | (b_uv_dx&1); | ||
975 : | b_uv_dy = (b_uv_dy>>1) | (b_uv_dy&1); | ||
976 : | } | ||
977 : | else { | ||
978 : | uv_dx /= 2; | ||
979 : | uv_dy /= 2; | ||
980 : | b_uv_dx /= 2; | ||
981 : | b_uv_dy /= 2; | ||
982 : | } | ||
983 : | edgomez | 1.47 | } |
984 : | |||
985 : | uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; | ||
986 : | uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; | ||
987 : | b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3]; | ||
988 : | b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3]; | ||
989 : | edgomez | 1.51 | |
990 : | edgomez | 1.47 | } else { |
991 : | edgomez | 1.62 | uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
992 : | uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; | ||
993 : | b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; | ||
994 : | b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; | ||
995 : | |||
996 : | if (dec->quarterpel) { | ||
997 : | Isibaar | 1.72 | if (dec->bs_version <= BS_VERSION_BUGGY_CHROMA_ROUNDING) { |
998 : | uv_dx = (uv_dx>>1) | (uv_dx&1); | ||
999 : | uv_dy = (uv_dy>>1) | (uv_dy&1); | ||
1000 : | b_uv_dx = (b_uv_dx>>1) | (b_uv_dx&1); | ||
1001 : | b_uv_dy = (b_uv_dy>>1) | (b_uv_dy&1); | ||
1002 : | } | ||
1003 : | else { | ||
1004 : | uv_dx /= 2; | ||
1005 : | uv_dy /= 2; | ||
1006 : | b_uv_dx /= 2; | ||
1007 : | b_uv_dy /= 2; | ||
1008 : | } | ||
1009 : | edgomez | 1.51 | } |
1010 : | edgomez | 1.47 | |
1011 : | edgomez | 1.51 | uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; |
1012 : | uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf]; | ||
1013 : | b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf]; | ||
1014 : | b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf]; | ||
1015 : | edgomez | 1.47 | } |
1016 : | |||
1017 : | start_timer(); | ||
1018 : | if(dec->quarterpel) { | ||
1019 : | edgomez | 1.51 | if(!direct) { |
1020 : | edgomez | 1.47 | interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1021 : | edgomez | 1.51 | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
1022 : | pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); | ||
1023 : | } else { | ||
1024 : | edgomez | 1.47 | interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1025 : | edgomez | 1.51 | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
1026 : | pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); | ||
1027 : | edgomez | 1.47 | interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1028 : | edgomez | 1.51 | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, |
1029 : | pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); | ||
1030 : | edgomez | 1.47 | interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1031 : | edgomez | 1.51 | dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, |
1032 : | pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); | ||
1033 : | edgomez | 1.47 | interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1034 : | edgomez | 1.51 | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, |
1035 : | pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); | ||
1036 : | edgomez | 1.47 | } |
1037 : | edgomez | 1.51 | } else { |
1038 : | edgomez | 1.47 | interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
1039 : | edgomez | 1.51 | pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
1040 : | edgomez | 1.47 | interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
1041 : | edgomez | 1.51 | pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
1042 : | edgomez | 1.47 | interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
1043 : | edgomez | 1.51 | pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
1044 : | interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos + 8, | ||
1045 : | pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); | ||
1046 : | edgomez | 1.47 | } |
1047 : | |||
1048 : | interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, | ||
1049 : | edgomez | 1.51 | uv_dy, stride2, 0); |
1050 : | edgomez | 1.47 | interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
1051 : | edgomez | 1.51 | uv_dy, stride2, 0); |
1052 : | edgomez | 1.47 | |
1053 : | |||
1054 : | if(dec->quarterpel) { | ||
1055 : | edgomez | 1.51 | if(!direct) { |
1056 : | edgomez | 1.65 | interpolate16x16_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1057 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, | ||
1058 : | pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); | ||
1059 : | edgomez | 1.51 | } else { |
1060 : | edgomez | 1.65 | interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
1061 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos, | ||
1062 : | pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); | ||
1063 : | interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, | ||
1064 : | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, | ||
1065 : | pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0); | ||
1066 : | interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, | ||
1067 : | dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, | ||
1068 : | pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0); | ||
1069 : | interpolate8x8_add_quarterpel(dec->cur.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, | ||
1070 : | dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, | ||
1071 : | pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0); | ||
1072 : | edgomez | 1.47 | } |
1073 : | edgomez | 1.51 | } else { |
1074 : | edgomez | 1.65 | interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos, 16 * y_pos, |
1075 : | pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); | ||
1076 : | interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos + 8, | ||
1077 : | 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0); | ||
1078 : | interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos, | ||
1079 : | 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0); | ||
1080 : | interpolate8x8_add_switch(dec->cur.y, backward.y, 16 * x_pos + 8, | ||
1081 : | 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0); | ||
1082 : | } | ||
1083 : | |||
1084 : | interpolate8x8_add_switch(dec->cur.u, backward.u, 8 * x_pos, 8 * y_pos, | ||
1085 : | b_uv_dx, b_uv_dy, stride2, 0); | ||
1086 : | interpolate8x8_add_switch(dec->cur.v, backward.v, 8 * x_pos, 8 * y_pos, | ||
1087 : | b_uv_dx, b_uv_dy, stride2, 0); | ||
1088 : | edgomez | 1.47 | |
1089 : | stop_comp_timer(); | ||
1090 : | |||
1091 : | edgomez | 1.51 | if (cbp) |
1092 : | syskin | 1.68 | decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, pMB); |
1093 : | edgomez | 1.47 | } |
1094 : | |||
1095 : | edgomez | 1.48 | /* for decode B-frame dbquant */ |
1096 : | edgomez | 1.51 | static __inline int32_t |
1097 : | edgomez | 1.47 | get_dbquant(Bitstream * bs) |
1098 : | { | ||
1099 : | edgomez | 1.51 | if (!BitstreamGetBit(bs)) /* '0' */ |
1100 : | edgomez | 1.47 | return (0); |
1101 : | edgomez | 1.51 | else if (!BitstreamGetBit(bs)) /* '10' */ |
1102 : | edgomez | 1.47 | return (-2); |
1103 : | edgomez | 1.51 | else /* '11' */ |
1104 : | edgomez | 1.48 | return (2); |
1105 : | edgomez | 1.47 | } |
1106 : | |||
1107 : | edgomez | 1.48 | /* |
1108 : | edgomez | 1.51 | * decode B-frame mb_type |
1109 : | * bit ret_value | ||
1110 : | * 1 0 | ||
1111 : | * 01 1 | ||
1112 : | * 001 2 | ||
1113 : | * 0001 3 | ||
1114 : | edgomez | 1.48 | */ |
1115 : | edgomez | 1.51 | static int32_t __inline |
1116 : | edgomez | 1.47 | get_mbtype(Bitstream * bs) |
1117 : | { | ||
1118 : | int32_t mb_type; | ||
1119 : | |||
1120 : | edgomez | 1.51 | for (mb_type = 0; mb_type <= 3; mb_type++) |
1121 : | edgomez | 1.47 | if (BitstreamGetBit(bs)) |
1122 : | edgomez | 1.51 | return (mb_type); |
1123 : | edgomez | 1.47 | |
1124 : | edgomez | 1.51 | return -1; |
1125 : | edgomez | 1.47 | } |
1126 : | |||
1127 : | edgomez | 1.51 | static void |
1128 : | edgomez | 1.47 | decoder_bframe(DECODER * dec, |
1129 : | edgomez | 1.51 | Bitstream * bs, |
1130 : | int quant, | ||
1131 : | int fcode_forward, | ||
1132 : | int fcode_backward) | ||
1133 : | edgomez | 1.47 | { |
1134 : | uint32_t x, y; | ||
1135 : | VECTOR mv; | ||
1136 : | const VECTOR zeromv = {0,0}; | ||
1137 : | edgomez | 1.51 | int i; |
1138 : | edgomez | 1.47 | |
1139 : | edgomez | 1.57 | if (!dec->is_edged[0]) { |
1140 : | start_timer(); | ||
1141 : | image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, | ||
1142 : | dec->width, dec->height, dec->bs_version); | ||
1143 : | dec->is_edged[0] = 1; | ||
1144 : | stop_edges_timer(); | ||
1145 : | } | ||
1146 : | |||
1147 : | if (!dec->is_edged[1]) { | ||
1148 : | start_timer(); | ||
1149 : | image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, | ||
1150 : | dec->width, dec->height, dec->bs_version); | ||
1151 : | dec->is_edged[1] = 1; | ||
1152 : | stop_edges_timer(); | ||
1153 : | } | ||
1154 : | edgomez | 1.47 | |
1155 : | for (y = 0; y < dec->mb_height; y++) { | ||
1156 : | edgomez | 1.48 | /* Initialize Pred Motion Vector */ |
1157 : | edgomez | 1.47 | dec->p_fmv = dec->p_bmv = zeromv; |
1158 : | for (x = 0; x < dec->mb_width; x++) { | ||
1159 : | MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; | ||
1160 : | MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; | ||
1161 : | edgomez | 1.51 | const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward; |
1162 : | Skal | 1.71 | int32_t intra_dc_threshold; /* fake variable */ |
1163 : | edgomez | 1.51 | |
1164 : | if (check_resync_marker(bs, fcode_max - 1)) { | ||
1165 : | int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant, | ||
1166 : | &fcode_forward, &fcode_backward, &intra_dc_threshold); | ||
1167 : | x = bound % dec->mb_width; | ||
1168 : | y = bound / dec->mb_width; | ||
1169 : | /* reset predicted macroblocks */ | ||
1170 : | dec->p_fmv = dec->p_bmv = zeromv; | ||
1171 : | } | ||
1172 : | edgomez | 1.47 | |
1173 : | mv = | ||
1174 : | mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = | ||
1175 : | mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; | ||
1176 : | edgomez | 1.51 | mb->quant = quant; |
1177 : | edgomez | 1.47 | |
1178 : | edgomez | 1.48 | /* |
1179 : | edgomez | 1.51 | * skip if the co-located P_VOP macroblock is not coded |
1180 : | edgomez | 1.48 | * if not codec in co-located S_VOP macroblock is _not_ |
1181 : | * automatically skipped | ||
1182 : | */ | ||
1183 : | edgomez | 1.47 | |
1184 : | if (last_mb->mode == MODE_NOT_CODED) { | ||
1185 : | mb->cbp = 0; | ||
1186 : | edgomez | 1.51 | mb->mode = MODE_FORWARD; |
1187 : | syskin | 1.68 | decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1); |
1188 : | edgomez | 1.47 | continue; |
1189 : | } | ||
1190 : | |||
1191 : | edgomez | 1.48 | if (!BitstreamGetBit(bs)) { /* modb=='0' */ |
1192 : | edgomez | 1.47 | const uint8_t modb2 = BitstreamGetBit(bs); |
1193 : | |||
1194 : | edgomez | 1.51 | mb->mode = get_mbtype(bs); |
1195 : | edgomez | 1.47 | |
1196 : | edgomez | 1.51 | if (!modb2) /* modb=='00' */ |
1197 : | edgomez | 1.47 | mb->cbp = BitstreamGetBits(bs, 6); |
1198 : | edgomez | 1.51 | else |
1199 : | edgomez | 1.47 | mb->cbp = 0; |
1200 : | edgomez | 1.51 | |
1201 : | if (mb->mode && mb->cbp) { | ||
1202 : | edgomez | 1.47 | quant += get_dbquant(bs); |
1203 : | edgomez | 1.51 | if (quant > 31) |
1204 : | edgomez | 1.47 | quant = 31; |
1205 : | edgomez | 1.51 | else if (quant < 1) |
1206 : | edgomez | 1.47 | quant = 1; |
1207 : | edgomez | 1.51 | } |
1208 : | mb->quant = quant; | ||
1209 : | |||
1210 : | if (dec->interlacing) { | ||
1211 : | if (mb->cbp) { | ||
1212 : | mb->field_dct = BitstreamGetBit(bs); | ||
1213 : | DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct); | ||
1214 : | } | ||
1215 : | |||
1216 : | if (mb->mode) { | ||
1217 : | mb->field_pred = BitstreamGetBit(bs); | ||
1218 : | DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred); | ||
1219 : | |||
1220 : | if (mb->field_pred) { | ||
1221 : | mb->field_for_top = BitstreamGetBit(bs); | ||
1222 : | DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top); | ||
1223 : | mb->field_for_bot = BitstreamGetBit(bs); | ||
1224 : | DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot); | ||
1225 : | } | ||
1226 : | edgomez | 1.47 | } |
1227 : | } | ||
1228 : | edgomez | 1.51 | |
1229 : | edgomez | 1.47 | } else { |
1230 : | edgomez | 1.51 | mb->mode = MODE_DIRECT_NONE_MV; |
1231 : | edgomez | 1.47 | mb->cbp = 0; |
1232 : | } | ||
1233 : | |||
1234 : | edgomez | 1.51 | switch (mb->mode) { |
1235 : | edgomez | 1.47 | case MODE_DIRECT: |
1236 : | edgomez | 1.51 | get_b_motion_vector(bs, &mv, 1, zeromv, dec, x, y); |
1237 : | edgomez | 1.47 | |
1238 : | case MODE_DIRECT_NONE_MV: | ||
1239 : | edgomez | 1.51 | for (i = 0; i < 4; i++) { |
1240 : | edgomez | 1.58 | mb->mvs[i].x = last_mb->mvs[i].x*dec->time_bp/dec->time_pp + mv.x; |
1241 : | mb->mvs[i].y = last_mb->mvs[i].y*dec->time_bp/dec->time_pp + mv.y; | ||
1242 : | |||
1243 : | mb->b_mvs[i].x = (mv.x) | ||
1244 : | ? mb->mvs[i].x - last_mb->mvs[i].x | ||
1245 : | : last_mb->mvs[i].x*(dec->time_bp - dec->time_pp)/dec->time_pp; | ||
1246 : | mb->b_mvs[i].y = (mv.y) | ||
1247 : | ? mb->mvs[i].y - last_mb->mvs[i].y | ||
1248 : | : last_mb->mvs[i].y*(dec->time_bp - dec->time_pp)/dec->time_pp; | ||
1249 : | edgomez | 1.47 | } |
1250 : | edgomez | 1.51 | |
1251 : | edgomez | 1.47 | decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1252 : | edgomez | 1.51 | mb, x, y, bs, 1); |
1253 : | edgomez | 1.47 | break; |
1254 : | |||
1255 : | case MODE_INTERPOLATE: | ||
1256 : | edgomez | 1.51 | get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y); |
1257 : | edgomez | 1.47 | dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1258 : | |||
1259 : | edgomez | 1.51 | get_b_motion_vector(bs, &mb->b_mvs[0], fcode_backward, dec->p_bmv, dec, x, y); |
1260 : | dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = mb->b_mvs[0]; | ||
1261 : | edgomez | 1.47 | |
1262 : | decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], | ||
1263 : | edgomez | 1.51 | mb, x, y, bs, 0); |
1264 : | edgomez | 1.47 | break; |
1265 : | |||
1266 : | case MODE_BACKWARD: | ||
1267 : | edgomez | 1.51 | get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv, dec, x, y); |
1268 : | edgomez | 1.47 | dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1269 : | |||
1270 : | syskin | 1.68 | decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0); |
1271 : | edgomez | 1.47 | break; |
1272 : | |||
1273 : | case MODE_FORWARD: | ||
1274 : | edgomez | 1.51 | get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv, dec, x, y); |
1275 : | edgomez | 1.47 | dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1276 : | |||
1277 : | syskin | 1.68 | decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 1); |
1278 : | edgomez | 1.47 | break; |
1279 : | |||
1280 : | default: | ||
1281 : | edgomez | 1.51 | DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode); |
1282 : | edgomez | 1.47 | } |
1283 : | edgomez | 1.48 | } /* End of for */ |
1284 : | } | ||
1285 : | edgomez | 1.47 | } |
1286 : | |||
1287 : | /* perform post processing if necessary, and output the image */ | ||
1288 : | edgomez | 1.51 | void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, |
1289 : | xvid_dec_frame_t * frame, xvid_dec_stats_t * stats, | ||
1290 : | int coding_type, int quant) | ||
1291 : | edgomez | 1.47 | { |
1292 : | suxen_drol | 1.55 | const int brightness = XVID_VERSION_MINOR(frame->version) >= 1 ? frame->brightness : 0; |
1293 : | |||
1294 : | edgomez | 1.51 | if (dec->cartoon_mode) |
1295 : | frame->general &= ~XVID_FILMEFFECT; | ||
1296 : | edgomez | 1.47 | |
1297 : | suxen_drol | 1.55 | if ((frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) || brightness!=0) |
1298 : | suxen_drol | 1.52 | && mbs != NULL) /* post process */ |
1299 : | edgomez | 1.47 | { |
1300 : | /* note: image is stored to tmp */ | ||
1301 : | image_copy(&dec->tmp, img, dec->edged_width, dec->height); | ||
1302 : | edgomez | 1.51 | image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, |
1303 : | mbs, dec->mb_width, dec->mb_height, dec->mb_width, | ||
1304 : | suxen_drol | 1.55 | frame->general, brightness, dec->frames, (coding_type == B_VOP)); |
1305 : | edgomez | 1.47 | img = &dec->tmp; |
1306 : | } | ||
1307 : | |||
1308 : | image_output(img, dec->width, dec->height, | ||
1309 : | edgomez | 1.51 | dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride, |
1310 : | frame->output.csp, dec->interlacing); | ||
1311 : | |||
1312 : | if (stats) { | ||
1313 : | stats->type = coding2type(coding_type); | ||
1314 : | stats->data.vop.time_base = (int)dec->time_base; | ||
1315 : | stats->data.vop.time_increment = 0; /* XXX: todo */ | ||
1316 : | stats->data.vop.qscale_stride = dec->mb_width; | ||
1317 : | stats->data.vop.qscale = dec->qscale; | ||
1318 : | if (stats->data.vop.qscale != NULL && mbs != NULL) { | ||
1319 : | int i; | ||
1320 : | for (i = 0; i < dec->mb_width*dec->mb_height; i++) | ||
1321 : | stats->data.vop.qscale[i] = mbs[i].quant; | ||
1322 : | } else | ||
1323 : | stats->data.vop.qscale = NULL; | ||
1324 : | } | ||
1325 : | edgomez | 1.47 | } |
1326 : | |||
1327 : | int | ||
1328 : | decoder_decode(DECODER * dec, | ||
1329 : | edgomez | 1.51 | xvid_dec_frame_t * frame, xvid_dec_stats_t * stats) |
1330 : | edgomez | 1.47 | { |
1331 : | |||
1332 : | Bitstream bs; | ||
1333 : | uint32_t rounding; | ||
1334 : | edgomez | 1.51 | uint32_t quant = 2; |
1335 : | edgomez | 1.47 | uint32_t fcode_forward; |
1336 : | uint32_t fcode_backward; | ||
1337 : | uint32_t intra_dc_threshold; | ||
1338 : | WARPPOINTS gmc_warp; | ||
1339 : | edgomez | 1.51 | int coding_type; |
1340 : | int success, output, seen_something; | ||
1341 : | |||
1342 : | if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */ | ||
1343 : | return XVID_ERR_VERSION; | ||
1344 : | edgomez | 1.47 | |
1345 : | start_global_timer(); | ||
1346 : | |||
1347 : | edgomez | 1.51 | dec->low_delay_default = (frame->general & XVID_LOWDELAY); |
1348 : | if ((frame->general & XVID_DISCONTINUITY)) | ||
1349 : | edgomez | 1.47 | dec->frames = 0; |
1350 : | edgomez | 1.51 | dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL; |
1351 : | edgomez | 1.47 | |
1352 : | edgomez | 1.51 | if (frame->length < 0) { /* decoder flush */ |
1353 : | int ret; | ||
1354 : | /* if not decoding "low_delay/packed", and this isn't low_delay and | ||
1355 : | we have a reference frame, then outout the reference frame */ | ||
1356 : | if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) { | ||
1357 : | decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant); | ||
1358 : | dec->frames = 0; | ||
1359 : | ret = 0; | ||
1360 : | } else { | ||
1361 : | if (stats) stats->type = XVID_TYPE_NOTHING; | ||
1362 : | ret = XVID_ERR_END; | ||
1363 : | edgomez | 1.47 | } |
1364 : | |||
1365 : | emms(); | ||
1366 : | stop_global_timer(); | ||
1367 : | edgomez | 1.51 | return ret; |
1368 : | edgomez | 1.47 | } |
1369 : | edgomez | 1.19 | |
1370 : | Isibaar | 1.1 | BitstreamInit(&bs, frame->bitstream, frame->length); |
1371 : | |||
1372 : | edgomez | 1.48 | /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */ |
1373 : | edgomez | 1.47 | if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f) |
1374 : | { | ||
1375 : | image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, | ||
1376 : | edgomez | 1.51 | (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing); |
1377 : | if (stats) stats->type = XVID_TYPE_NOTHING; | ||
1378 : | edgomez | 1.47 | emms(); |
1379 : | edgomez | 1.51 | return 1; /* one byte consumed */ |
1380 : | edgomez | 1.47 | } |
1381 : | |||
1382 : | edgomez | 1.51 | success = 0; |
1383 : | output = 0; | ||
1384 : | seen_something = 0; | ||
1385 : | |||
1386 : | edgomez | 1.47 | repeat: |
1387 : | |||
1388 : | syskin | 1.68 | coding_type = BitstreamReadHeaders(&bs, dec, &rounding, |
1389 : | edgomez | 1.47 | &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp); |
1390 : | |||
1391 : | suxen_drol | 1.69 | DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%" |
1392 : | #if defined(_MSC_VER) | ||
1393 : | "I64" | ||
1394 : | #else | ||
1395 : | "ll" | ||
1396 : | #endif | ||
1397 : | "i, time_pp=%i, time_bp=%i\n", | ||
1398 : | edgomez | 1.51 | coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp); |
1399 : | Isibaar | 1.1 | |
1400 : | edgomez | 1.51 | if (coding_type == -1) { /* nothing */ |
1401 : | edgomez | 1.47 | if (success) goto done; |
1402 : | edgomez | 1.51 | if (stats) stats->type = XVID_TYPE_NOTHING; |
1403 : | edgomez | 1.47 | emms(); |
1404 : | edgomez | 1.51 | return BitstreamPos(&bs)/8; |
1405 : | Isibaar | 1.1 | } |
1406 : | |||
1407 : | edgomez | 1.51 | if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */ |
1408 : | |||
1409 : | if (coding_type == -3) | ||
1410 : | edgomez | 1.47 | decoder_resize(dec); |
1411 : | edgomez | 1.51 | |
1412 : | if (stats) { | ||
1413 : | stats->type = XVID_TYPE_VOL; | ||
1414 : | edgomez | 1.47 | stats->data.vol.general = 0; |
1415 : | edgomez | 1.51 | /*XXX: if (dec->interlacing) |
1416 : | stats->data.vol.general |= ++INTERLACING; */ | ||
1417 : | edgomez | 1.47 | stats->data.vol.width = dec->width; |
1418 : | stats->data.vol.height = dec->height; | ||
1419 : | edgomez | 1.51 | stats->data.vol.par = dec->aspect_ratio; |
1420 : | edgomez | 1.47 | stats->data.vol.par_width = dec->par_width; |
1421 : | stats->data.vol.par_height = dec->par_height; | ||
1422 : | emms(); | ||
1423 : | edgomez | 1.51 | return BitstreamPos(&bs)/8; /* number of bytes consumed */ |
1424 : | edgomez | 1.47 | } |
1425 : | syskin | 1.56 | goto repeat; |
1426 : | } | ||
1427 : | |||
1428 : | if(dec->frames == 0 && coding_type != I_VOP) { | ||
1429 : | /* 1st frame is not an i-vop */ | ||
1430 : | edgomez | 1.47 | goto repeat; |
1431 : | edgomez | 1.51 | } |
1432 : | edgomez | 1.47 | |
1433 : | 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 */ |
1434 : | edgomez | 1.47 | |
1435 : | /* packed_mode: special-N_VOP treament */ | ||
1436 : | edgomez | 1.51 | if (dec->packed_mode && coding_type == N_VOP) { |
1437 : | if (dec->low_delay_default && dec->frames > 0) { | ||
1438 : | decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant); | ||
1439 : | edgomez | 1.47 | output = 1; |
1440 : | } | ||
1441 : | /* ignore otherwise */ | ||
1442 : | edgomez | 1.51 | } else if (coding_type != B_VOP) { |
1443 : | switch(coding_type) { | ||
1444 : | edgomez | 1.47 | case I_VOP : |
1445 : | syskin | 1.68 | decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1446 : | edgomez | 1.47 | break; |
1447 : | case P_VOP : | ||
1448 : | syskin | 1.68 | decoder_pframe(dec, &bs, rounding, quant, |
1449 : | edgomez | 1.47 | fcode_forward, intra_dc_threshold, NULL); |
1450 : | break; | ||
1451 : | case S_VOP : | ||
1452 : | syskin | 1.68 | decoder_pframe(dec, &bs, rounding, quant, |
1453 : | edgomez | 1.47 | fcode_forward, intra_dc_threshold, &gmc_warp); |
1454 : | break; | ||
1455 : | case N_VOP : | ||
1456 : | edgomez | 1.51 | /* XXX: not_coded vops are not used for forward prediction */ |
1457 : | /* we should not swap(last_mbs,mbs) */ | ||
1458 : | edgomez | 1.47 | image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1459 : | edgomez | 1.51 | SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */ |
1460 : | edgomez | 1.47 | break; |
1461 : | } | ||
1462 : | |||
1463 : | /* note: for packed_mode, output is performed when the special-N_VOP is decoded */ | ||
1464 : | edgomez | 1.51 | if (!(dec->low_delay_default && dec->packed_mode)) { |
1465 : | if (dec->low_delay) { | ||
1466 : | decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant); | ||
1467 : | edgomez | 1.47 | output = 1; |
1468 : | edgomez | 1.51 | } else if (dec->frames > 0) { /* is the reference frame valid? */ |
1469 : | edgomez | 1.47 | /* output the reference frame */ |
1470 : | edgomez | 1.51 | decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant); |
1471 : | edgomez | 1.47 | output = 1; |
1472 : | } | ||
1473 : | } | ||
1474 : | Isibaar | 1.18 | |
1475 : | chenm001 | 1.14 | image_swap(&dec->refn[0], &dec->refn[1]); |
1476 : | edgomez | 1.57 | dec->is_edged[1] = dec->is_edged[0]; |
1477 : | chenm001 | 1.14 | image_swap(&dec->cur, &dec->refn[0]); |
1478 : | edgomez | 1.57 | dec->is_edged[0] = 0; |
1479 : | edgomez | 1.51 | SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); |
1480 : | dec->last_coding_type = coding_type; | ||
1481 : | edgomez | 1.47 | |
1482 : | dec->frames++; | ||
1483 : | seen_something = 1; | ||
1484 : | chenm001 | 1.31 | |
1485 : | edgomez | 1.51 | } else { /* B_VOP */ |
1486 : | edgomez | 1.47 | |
1487 : | edgomez | 1.51 | if (dec->low_delay) { |
1488 : | DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n"); | ||
1489 : | syskin | 1.60 | dec->low_delay = 0; |
1490 : | edgomez | 1.47 | } |
1491 : | |||
1492 : | edgomez | 1.51 | if (dec->frames < 2) { |
1493 : | edgomez | 1.47 | /* attemping to decode a bvop without atleast 2 reference frames */ |
1494 : | image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, | ||
1495 : | "broken b-frame, mising ref frames"); | ||
1496 : | edgomez | 1.51 | if (stats) stats->type = XVID_TYPE_NOTHING; |
1497 : | } else if (dec->time_pp <= dec->time_bp) { | ||
1498 : | /* this occurs when dx50_bvop_compatibility==0 sequences are | ||
1499 : | edgomez | 1.47 | decoded in vfw. */ |
1500 : | image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, | ||
1501 : | "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp); | ||
1502 : | edgomez | 1.51 | if (stats) stats->type = XVID_TYPE_NOTHING; |
1503 : | } else { | ||
1504 : | edgomez | 1.47 | decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1505 : | edgomez | 1.51 | decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant); |
1506 : | edgomez | 1.47 | } |
1507 : | |||
1508 : | output = 1; | ||
1509 : | dec->frames++; | ||
1510 : | chenm001 | 1.14 | } |
1511 : | |||
1512 : | edgomez | 1.51 | #if 0 /* Avoids to read to much data because of 32bit reads in our BS functions */ |
1513 : | BitstreamByteAlign(&bs); | ||
1514 : | #endif | ||
1515 : | edgomez | 1.47 | |
1516 : | /* low_delay_default mode: repeat in packed_mode */ | ||
1517 : | edgomez | 1.51 | if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) { |
1518 : | edgomez | 1.47 | success = 1; |
1519 : | goto repeat; | ||
1520 : | } | ||
1521 : | |||
1522 : | done : | ||
1523 : | |||
1524 : | suxen_drol | 1.69 | /* if we reach here without outputing anything _and_ |
1525 : | the calling application has specified low_delay_default, | ||
1526 : | we *must* output something. | ||
1527 : | this always occurs on the first call to decode() call | ||
1528 : | when bframes are present in the bitstream. it may also | ||
1529 : | occur if no vops were seen in the bitstream | ||
1530 : | |||
1531 : | if packed_mode is enabled, then we output the recently | ||
1532 : | decoded frame (the very first ivop). otherwise we have | ||
1533 : | nothing to display, and therefore output a black screen. | ||
1534 : | */ | ||
1535 : | if (dec->low_delay_default && output == 0) { | ||
1536 : | if (dec->packed_mode && seen_something) { | ||
1537 : | edgomez | 1.51 | decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant); |
1538 : | suxen_drol | 1.69 | } else { |
1539 : | edgomez | 1.47 | image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128); |
1540 : | edgomez | 1.51 | decoder_output(dec, &dec->cur, NULL, frame, stats, P_VOP, quant); |
1541 : | if (stats) stats->type = XVID_TYPE_NOTHING; | ||
1542 : | edgomez | 1.47 | } |
1543 : | } | ||
1544 : | Isibaar | 1.50 | |
1545 : | Isibaar | 1.1 | emms(); |
1546 : | stop_global_timer(); | ||
1547 : | |||
1548 : | edgomez | 1.51 | return (BitstreamPos(&bs) + 7) / 8; /* number of bytes consumed */ |
1549 : | Isibaar | 1.1 | } |
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