Directory: | ../../../ffmpeg/ |
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File: | src/libavcodec/vp56.c |
Date: | 2022-07-04 00:18:54 |
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Lines: | 473 | 509 | 92.9% |
Branches: | 247 | 283 | 87.3% |
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1 | /* | ||
2 | * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org> | ||
3 | * | ||
4 | * This file is part of FFmpeg. | ||
5 | * | ||
6 | * FFmpeg is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU Lesser General Public | ||
8 | * License as published by the Free Software Foundation; either | ||
9 | * version 2.1 of the License, or (at your option) any later version. | ||
10 | * | ||
11 | * FFmpeg is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
14 | * Lesser General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU Lesser General Public | ||
17 | * License along with FFmpeg; if not, write to the Free Software | ||
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file | ||
23 | * VP5 and VP6 compatible video decoder (common features) | ||
24 | */ | ||
25 | |||
26 | #include "avcodec.h" | ||
27 | #include "bytestream.h" | ||
28 | #include "internal.h" | ||
29 | #include "h264chroma.h" | ||
30 | #include "vp56.h" | ||
31 | #include "vp56data.h" | ||
32 | |||
33 | |||
34 | 960 | void ff_vp56_init_dequant(VP56Context *s, int quantizer) | |
35 | { | ||
36 |
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960 | if (s->quantizer != quantizer) |
37 | 408 | ff_vp3dsp_set_bounding_values(s->bounding_values_array, ff_vp56_filter_threshold[quantizer]); | |
38 | 960 | s->quantizer = quantizer; | |
39 | 960 | s->dequant_dc = ff_vp56_dc_dequant[quantizer] << 2; | |
40 | 960 | s->dequant_ac = ff_vp56_ac_dequant[quantizer] << 2; | |
41 | 960 | } | |
42 | |||
43 | 238195 | static int vp56_get_vectors_predictors(VP56Context *s, int row, int col, | |
44 | VP56Frame ref_frame) | ||
45 | { | ||
46 | 238195 | int nb_pred = 0; | |
47 | 238195 | VP56mv vect[2] = {{0,0}, {0,0}}; | |
48 | int pos, offset; | ||
49 | VP56mv mvp; | ||
50 | |||
51 |
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2438878 | for (pos=0; pos<12; pos++) { |
52 | 2277692 | mvp.x = col + ff_vp56_candidate_predictor_pos[pos][0]; | |
53 | 2277692 | mvp.y = row + ff_vp56_candidate_predictor_pos[pos][1]; | |
54 |
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2277692 | if (mvp.x < 0 || mvp.x >= s->mb_width || |
55 |
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2130422 | mvp.y < 0 || mvp.y >= s->mb_height) |
56 | 362660 | continue; | |
57 | 1915032 | offset = mvp.x + s->mb_width*mvp.y; | |
58 | |||
59 |
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1915032 | if (ff_vp56_reference_frame[s->macroblocks[offset].type] != ref_frame) |
60 | 331615 | continue; | |
61 |
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1583417 | if ((s->macroblocks[offset].mv.x == vect[0].x && |
62 |
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1292994 | s->macroblocks[offset].mv.y == vect[0].y) || |
63 |
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366371 | (s->macroblocks[offset].mv.x == 0 && |
64 |
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207738 | s->macroblocks[offset].mv.y == 0)) |
65 | 1394073 | continue; | |
66 | |||
67 | 189344 | vect[nb_pred++] = s->macroblocks[offset].mv; | |
68 |
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189344 | if (nb_pred > 1) { |
69 | 77009 | nb_pred = -1; | |
70 | 77009 | break; | |
71 | } | ||
72 | 112335 | s->vector_candidate_pos = pos; | |
73 | } | ||
74 | |||
75 | 238195 | s->vector_candidate[0] = vect[0]; | |
76 | 238195 | s->vector_candidate[1] = vect[1]; | |
77 | |||
78 | 238195 | return nb_pred+1; | |
79 | } | ||
80 | |||
81 | 916 | static void vp56_parse_mb_type_models(VP56Context *s) | |
82 | { | ||
83 | 916 | VP56RangeCoder *c = &s->c; | |
84 | 916 | VP56Model *model = s->modelp; | |
85 | int i, ctx, type; | ||
86 | |||
87 |
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3664 | for (ctx=0; ctx<3; ctx++) { |
88 |
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2748 | if (vp56_rac_get_prob_branchy(c, 174)) { |
89 | 730 | int idx = vp56_rac_gets(c, 4); | |
90 | 730 | memcpy(model->mb_types_stats[ctx], | |
91 | 730 | ff_vp56_pre_def_mb_type_stats[idx][ctx], | |
92 | sizeof(model->mb_types_stats[ctx])); | ||
93 | } | ||
94 |
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2748 | if (vp56_rac_get_prob_branchy(c, 254)) { |
95 |
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1287 | for (type=0; type<10; type++) { |
96 |
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3510 | for(i=0; i<2; i++) { |
97 |
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2340 | if (vp56_rac_get_prob_branchy(c, 205)) { |
98 | 915 | int delta, sign = vp56_rac_get(c); | |
99 | |||
100 | 915 | delta = vp56_rac_get_tree(c, ff_vp56_pmbtm_tree, | |
101 | ff_vp56_mb_type_model_model); | ||
102 |
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915 | if (!delta) |
103 | 139 | delta = 4 * vp56_rac_gets(c, 7); | |
104 | 915 | model->mb_types_stats[ctx][type][i] += (delta ^ -sign) + sign; | |
105 | } | ||
106 | } | ||
107 | } | ||
108 | } | ||
109 | } | ||
110 | |||
111 | /* compute MB type probability tables based on previous MB type */ | ||
112 |
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3664 | for (ctx=0; ctx<3; ctx++) { |
113 | int p[10]; | ||
114 | |||
115 |
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30228 | for (type=0; type<10; type++) |
116 | 27480 | p[type] = 100 * model->mb_types_stats[ctx][type][1]; | |
117 | |||
118 |
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30228 | for (type=0; type<10; type++) { |
119 | int p02, p34, p0234, p17, p56, p89, p5689, p156789; | ||
120 | |||
121 | /* conservative MB type probability */ | ||
122 | 27480 | model->mb_type[ctx][type][0] = 255 - (255 * model->mb_types_stats[ctx][type][0]) / (1 + model->mb_types_stats[ctx][type][0] + model->mb_types_stats[ctx][type][1]); | |
123 | |||
124 | 27480 | p[type] = 0; /* same MB type => weight is null */ | |
125 | |||
126 | /* binary tree parsing probabilities */ | ||
127 | 27480 | p02 = p[0] + p[2]; | |
128 | 27480 | p34 = p[3] + p[4]; | |
129 | 27480 | p0234 = p02 + p34; | |
130 | 27480 | p17 = p[1] + p[7]; | |
131 | 27480 | p56 = p[5] + p[6]; | |
132 | 27480 | p89 = p[8] + p[9]; | |
133 | 27480 | p5689 = p56 + p89; | |
134 | 27480 | p156789 = p17 + p5689; | |
135 | |||
136 | 27480 | model->mb_type[ctx][type][1] = 1 + 255 * p0234/(1+p0234+p156789); | |
137 | 27480 | model->mb_type[ctx][type][2] = 1 + 255 * p02 / (1+p0234); | |
138 | 27480 | model->mb_type[ctx][type][3] = 1 + 255 * p17 / (1+p156789); | |
139 | 27480 | model->mb_type[ctx][type][4] = 1 + 255 * p[0] / (1+p02); | |
140 | 27480 | model->mb_type[ctx][type][5] = 1 + 255 * p[3] / (1+p34); | |
141 | 27480 | model->mb_type[ctx][type][6] = 1 + 255 * p[1] / (1+p17); | |
142 | 27480 | model->mb_type[ctx][type][7] = 1 + 255 * p56 / (1+p5689); | |
143 | 27480 | model->mb_type[ctx][type][8] = 1 + 255 * p[5] / (1+p56); | |
144 | 27480 | model->mb_type[ctx][type][9] = 1 + 255 * p[8] / (1+p89); | |
145 | |||
146 | /* restore initial value */ | ||
147 | 27480 | p[type] = 100 * model->mb_types_stats[ctx][type][1]; | |
148 | } | ||
149 | } | ||
150 | 916 | } | |
151 | |||
152 | 235558 | static VP56mb vp56_parse_mb_type(VP56Context *s, | |
153 | VP56mb prev_type, int ctx) | ||
154 | { | ||
155 | 235558 | uint8_t *mb_type_model = s->modelp->mb_type[ctx][prev_type]; | |
156 | 235558 | VP56RangeCoder *c = &s->c; | |
157 | |||
158 |
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235558 | if (vp56_rac_get_prob_branchy(c, mb_type_model[0])) |
159 | 178882 | return prev_type; | |
160 | else | ||
161 | 56676 | return vp56_rac_get_tree(c, ff_vp56_pmbt_tree, mb_type_model); | |
162 | } | ||
163 | |||
164 | 10512 | static void vp56_decode_4mv(VP56Context *s, int row, int col) | |
165 | { | ||
166 | 10512 | VP56mv mv = {0,0}; | |
167 | int type[4]; | ||
168 | int b; | ||
169 | |||
170 | /* parse each block type */ | ||
171 |
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52560 | for (b=0; b<4; b++) { |
172 | 42048 | type[b] = vp56_rac_gets(&s->c, 2); | |
173 |
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42048 | if (type[b]) |
174 | 33489 | type[b]++; /* only returns 0, 2, 3 or 4 (all INTER_PF) */ | |
175 | } | ||
176 | |||
177 | /* get vectors */ | ||
178 |
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52560 | for (b=0; b<4; b++) { |
179 |
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42048 | switch (type[b]) { |
180 | 8559 | case VP56_MB_INTER_NOVEC_PF: | |
181 | 8559 | s->mv[b] = (VP56mv) {0,0}; | |
182 | 8559 | break; | |
183 | 12581 | case VP56_MB_INTER_DELTA_PF: | |
184 | 12581 | s->parse_vector_adjustment(s, &s->mv[b]); | |
185 | 12581 | break; | |
186 | 12468 | case VP56_MB_INTER_V1_PF: | |
187 | 12468 | s->mv[b] = s->vector_candidate[0]; | |
188 | 12468 | break; | |
189 | 8440 | case VP56_MB_INTER_V2_PF: | |
190 | 8440 | s->mv[b] = s->vector_candidate[1]; | |
191 | 8440 | break; | |
192 | } | ||
193 | 42048 | mv.x += s->mv[b].x; | |
194 | 42048 | mv.y += s->mv[b].y; | |
195 | } | ||
196 | |||
197 | /* this is the one selected for the whole MB for prediction */ | ||
198 | 10512 | s->macroblocks[row * s->mb_width + col].mv = s->mv[3]; | |
199 | |||
200 | /* chroma vectors are average luma vectors */ | ||
201 |
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10512 | s->mv[4].x = s->mv[5].x = RSHIFT(mv.x,2); |
202 |
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10512 | s->mv[4].y = s->mv[5].y = RSHIFT(mv.y,2); |
203 | 10512 | } | |
204 | |||
205 | 235558 | static VP56mb vp56_decode_mv(VP56Context *s, int row, int col) | |
206 | { | ||
207 | 235558 | VP56mv *mv, vect = {0,0}; | |
208 | int ctx, b; | ||
209 | |||
210 | 235558 | ctx = vp56_get_vectors_predictors(s, row, col, VP56_FRAME_PREVIOUS); | |
211 | 235558 | s->mb_type = vp56_parse_mb_type(s, s->mb_type, ctx); | |
212 | 235558 | s->macroblocks[row * s->mb_width + col].type = s->mb_type; | |
213 | |||
214 |
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235558 | switch (s->mb_type) { |
215 | 36874 | case VP56_MB_INTER_V1_PF: | |
216 | 36874 | mv = &s->vector_candidate[0]; | |
217 | 36874 | break; | |
218 | |||
219 | 11522 | case VP56_MB_INTER_V2_PF: | |
220 | 11522 | mv = &s->vector_candidate[1]; | |
221 | 11522 | break; | |
222 | |||
223 | 1037 | case VP56_MB_INTER_V1_GF: | |
224 | 1037 | vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN); | |
225 | 1037 | mv = &s->vector_candidate[0]; | |
226 | 1037 | break; | |
227 | |||
228 | 160 | case VP56_MB_INTER_V2_GF: | |
229 | 160 | vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN); | |
230 | 160 | mv = &s->vector_candidate[1]; | |
231 | 160 | break; | |
232 | |||
233 | 14426 | case VP56_MB_INTER_DELTA_PF: | |
234 | 14426 | s->parse_vector_adjustment(s, &vect); | |
235 | 14426 | mv = &vect; | |
236 | 14426 | break; | |
237 | |||
238 | 1440 | case VP56_MB_INTER_DELTA_GF: | |
239 | 1440 | vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN); | |
240 | 1440 | s->parse_vector_adjustment(s, &vect); | |
241 | 1440 | mv = &vect; | |
242 | 1440 | break; | |
243 | |||
244 | 10512 | case VP56_MB_INTER_4V: | |
245 | 10512 | vp56_decode_4mv(s, row, col); | |
246 | 10512 | return s->mb_type; | |
247 | |||
248 | 159587 | default: | |
249 | 159587 | mv = &vect; | |
250 | 159587 | break; | |
251 | } | ||
252 | |||
253 | 225046 | s->macroblocks[row*s->mb_width + col].mv = *mv; | |
254 | |||
255 | /* same vector for all blocks */ | ||
256 |
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1575322 | for (b=0; b<6; b++) |
257 | 1350276 | s->mv[b] = *mv; | |
258 | |||
259 | 225046 | return s->mb_type; | |
260 | } | ||
261 | |||
262 | 363 | static VP56mb vp56_conceal_mv(VP56Context *s, int row, int col) | |
263 | { | ||
264 | 363 | VP56mv *mv, vect = {0,0}; | |
265 | int b; | ||
266 | |||
267 | 363 | s->mb_type = VP56_MB_INTER_NOVEC_PF; | |
268 | 363 | s->macroblocks[row * s->mb_width + col].type = s->mb_type; | |
269 | |||
270 | 363 | mv = &vect; | |
271 | |||
272 | 363 | s->macroblocks[row*s->mb_width + col].mv = *mv; | |
273 | |||
274 | /* same vector for all blocks */ | ||
275 |
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2541 | for (b=0; b<6; b++) |
276 | 2178 | s->mv[b] = *mv; | |
277 | |||
278 | 363 | return s->mb_type; | |
279 | } | ||
280 | |||
281 | 245731 | static void vp56_add_predictors_dc(VP56Context *s, VP56Frame ref_frame) | |
282 | { | ||
283 | 245731 | int idx = s->idct_scantable[0]; | |
284 | int b; | ||
285 | |||
286 |
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1720117 | for (b=0; b<6; b++) { |
287 | 1474386 | VP56RefDc *ab = &s->above_blocks[s->above_block_idx[b]]; | |
288 | 1474386 | VP56RefDc *lb = &s->left_block[ff_vp56_b6to4[b]]; | |
289 | 1474386 | int count = 0; | |
290 | 1474386 | int dc = 0; | |
291 | int i; | ||
292 | |||
293 |
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1474386 | if (ref_frame == lb->ref_frame) { |
294 | 1388770 | dc += lb->dc_coeff; | |
295 | 1388770 | count++; | |
296 | } | ||
297 |
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1474386 | if (ref_frame == ab->ref_frame) { |
298 | 1357234 | dc += ab->dc_coeff; | |
299 | 1357234 | count++; | |
300 | } | ||
301 |
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1474386 | if (s->avctx->codec->id == AV_CODEC_ID_VP5) |
302 |
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303 |
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1802112 | if (count < 2 && ref_frame == ab[-1+2*i].ref_frame) { |
304 | 72112 | dc += ab[-1+2*i].dc_coeff; | |
305 | 72112 | count++; | |
306 | } | ||
307 |
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1474386 | if (count == 0) |
308 | 18280 | dc = s->prev_dc[ff_vp56_b2p[b]][ref_frame]; | |
309 |
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1456106 | else if (count == 2) |
310 | 1362010 | dc /= 2; | |
311 | |||
312 | 1474386 | s->block_coeff[b][idx] += dc; | |
313 | 1474386 | s->prev_dc[ff_vp56_b2p[b]][ref_frame] = s->block_coeff[b][idx]; | |
314 | 1474386 | ab->dc_coeff = s->block_coeff[b][idx]; | |
315 | 1474386 | ab->ref_frame = ref_frame; | |
316 | 1474386 | lb->dc_coeff = s->block_coeff[b][idx]; | |
317 | 1474386 | lb->ref_frame = ref_frame; | |
318 | 1474386 | s->block_coeff[b][idx] *= s->dequant_dc; | |
319 | } | ||
320 | 245731 | } | |
321 | |||
322 | 423238 | static void vp56_deblock_filter(VP56Context *s, uint8_t *yuv, | |
323 | ptrdiff_t stride, int dx, int dy) | ||
324 | { | ||
325 |
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423238 | if (s->avctx->codec->id == AV_CODEC_ID_VP5) { |
326 | 249618 | int t = ff_vp56_filter_threshold[s->quantizer]; | |
327 |
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249618 | if (dx) s->vp56dsp.edge_filter_hor(yuv + 10-dx , stride, t); |
328 |
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249618 | if (dy) s->vp56dsp.edge_filter_ver(yuv + stride*(10-dy), stride, t); |
329 | } else { | ||
330 | 173620 | int * bounding_values = s->bounding_values_array + 127; | |
331 |
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173620 | if (dx) |
332 | 66268 | ff_vp3dsp_h_loop_filter_12(yuv + 10-dx, stride, bounding_values); | |
333 |
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173620 | if (dy) |
334 | 63282 | ff_vp3dsp_v_loop_filter_12(yuv + stride*(10-dy), stride, bounding_values); | |
335 | } | ||
336 | 423238 | } | |
337 | |||
338 | 443512 | static void vp56_mc(VP56Context *s, int b, int plane, uint8_t *src, | |
339 | ptrdiff_t stride, int x, int y) | ||
340 | { | ||
341 | 443512 | uint8_t *dst = s->frames[VP56_FRAME_CURRENT]->data[plane] + s->block_offset[b]; | |
342 | uint8_t *src_block; | ||
343 | int src_offset; | ||
344 | 443512 | int overlap_offset = 0; | |
345 | 443512 | int mask = s->vp56_coord_div[b] - 1; | |
346 | 443512 | int deblock_filtering = s->deblock_filtering; | |
347 | int dx; | ||
348 | int dy; | ||
349 | |||
350 |
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443512 | if (s->avctx->skip_loop_filter >= AVDISCARD_ALL || |
351 |
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443512 | (s->avctx->skip_loop_filter >= AVDISCARD_NONKEY |
352 | ✗ | && !s->frames[VP56_FRAME_CURRENT]->key_frame)) | |
353 | ✗ | deblock_filtering = 0; | |
354 | |||
355 | 443512 | dx = s->mv[b].x / s->vp56_coord_div[b]; | |
356 | 443512 | dy = s->mv[b].y / s->vp56_coord_div[b]; | |
357 | |||
358 |
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443512 | if (b >= 4) { |
359 | 139632 | x /= 2; | |
360 | 139632 | y /= 2; | |
361 | } | ||
362 | 443512 | x += dx - 2; | |
363 | 443512 | y += dy - 2; | |
364 | |||
365 |
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443512 | if (x<0 || x+12>=s->plane_width[plane] || |
366 |
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413084 | y<0 || y+12>=s->plane_height[plane]) { |
367 | 49836 | s->vdsp.emulated_edge_mc(s->edge_emu_buffer, | |
368 | 49836 | src + s->block_offset[b] + (dy-2)*stride + (dx-2), | |
369 | stride, stride, | ||
370 | 12, 12, x, y, | ||
371 | s->plane_width[plane], | ||
372 | s->plane_height[plane]); | ||
373 | 49836 | src_block = s->edge_emu_buffer; | |
374 | 49836 | src_offset = 2 + 2*stride; | |
375 |
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393676 | } else if (deblock_filtering) { |
376 | /* only need a 12x12 block, but there is no such dsp function, */ | ||
377 | /* so copy a 16x12 block */ | ||
378 | 375220 | s->hdsp.put_pixels_tab[0][0](s->edge_emu_buffer, | |
379 | 375220 | src + s->block_offset[b] + (dy-2)*stride + (dx-2), | |
380 | stride, 12); | ||
381 | 375220 | src_block = s->edge_emu_buffer; | |
382 | 375220 | src_offset = 2 + 2*stride; | |
383 | } else { | ||
384 | 18456 | src_block = src; | |
385 | 18456 | src_offset = s->block_offset[b] + dy*stride + dx; | |
386 | } | ||
387 | |||
388 |
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443512 | if (deblock_filtering) |
389 | 423238 | vp56_deblock_filter(s, src_block, stride, dx&7, dy&7); | |
390 | |||
391 |
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443512 | if (s->mv[b].x & mask) |
392 |
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282743 | overlap_offset += (s->mv[b].x > 0) ? 1 : -1; |
393 |
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443512 | if (s->mv[b].y & mask) |
394 |
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277774 | overlap_offset += (s->mv[b].y > 0) ? stride : -stride; |
395 | |||
396 |
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443512 | if (overlap_offset) { |
397 |
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387371 | if (s->filter) |
398 | 171252 | s->filter(s, dst, src_block, src_offset, src_offset+overlap_offset, | |
399 | stride, s->mv[b], mask, s->filter_selection, b<4); | ||
400 | else | ||
401 | 216119 | s->vp3dsp.put_no_rnd_pixels_l2(dst, src_block+src_offset, | |
402 | 216119 | src_block+src_offset+overlap_offset, | |
403 | stride, 8); | ||
404 | } else { | ||
405 | 56141 | s->hdsp.put_pixels_tab[1][0](dst, src_block+src_offset, stride, 8); | |
406 | } | ||
407 | 443512 | } | |
408 | |||
409 | 197664 | static void vp56_idct_put(VP56Context *s, uint8_t * dest, ptrdiff_t stride, int16_t *block, int selector) | |
410 | { | ||
411 |
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197664 | if (selector > 10 || selector == 1) |
412 | 162720 | s->vp3dsp.idct_put(dest, stride, block); | |
413 | else | ||
414 | 34944 | ff_vp3dsp_idct10_put(dest, stride, block); | |
415 | 197664 | } | |
416 | |||
417 | 1234314 | static void vp56_idct_add(VP56Context *s, uint8_t * dest, ptrdiff_t stride, int16_t *block, int selector) | |
418 | { | ||
419 |
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1234314 | if (selector > 10) |
420 | 865208 | s->vp3dsp.idct_add(dest, stride, block); | |
421 |
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369106 | else if (selector > 1) |
422 | 369106 | ff_vp3dsp_idct10_add(dest, stride, block); | |
423 | else | ||
424 | ✗ | s->vp3dsp.idct_dc_add(dest, stride, block); | |
425 | 1234314 | } | |
426 | |||
427 | 245731 | static av_always_inline void vp56_render_mb(VP56Context *s, int row, int col, int is_alpha, VP56mb mb_type) | |
428 | { | ||
429 | int b, ab, b_max, plane, off; | ||
430 | AVFrame *frame_current, *frame_ref; | ||
431 | 245731 | VP56Frame ref_frame = ff_vp56_reference_frame[mb_type]; | |
432 | |||
433 | 245731 | vp56_add_predictors_dc(s, ref_frame); | |
434 | |||
435 | 245731 | frame_current = s->frames[VP56_FRAME_CURRENT]; | |
436 | 245731 | frame_ref = s->frames[ref_frame]; | |
437 |
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245731 | if (mb_type != VP56_MB_INTRA && !frame_ref->data[0]) |
438 | ✗ | return; | |
439 | |||
440 | 245731 | ab = 6*is_alpha; | |
441 | 245731 | b_max = 6 - 2*is_alpha; | |
442 | |||
443 |
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245731 | switch (mb_type) { |
444 | 33512 | case VP56_MB_INTRA: | |
445 |
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231176 | for (b=0; b<b_max; b++) { |
446 | 197664 | plane = ff_vp56_b2p[b+ab]; | |
447 | 197664 | vp56_idct_put(s, frame_current->data[plane] + s->block_offset[b], | |
448 | 197664 | s->stride[plane], s->block_coeff[b], s->idct_selector[b]); | |
449 | } | ||
450 | 33512 | break; | |
451 | |||
452 | 136249 | case VP56_MB_INTER_NOVEC_PF: | |
453 | case VP56_MB_INTER_NOVEC_GF: | ||
454 |
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927051 | for (b=0; b<b_max; b++) { |
455 | 790802 | plane = ff_vp56_b2p[b+ab]; | |
456 | 790802 | off = s->block_offset[b]; | |
457 | 790802 | s->hdsp.put_pixels_tab[1][0](frame_current->data[plane] + off, | |
458 | 790802 | frame_ref->data[plane] + off, | |
459 | s->stride[plane], 8); | ||
460 | 790802 | vp56_idct_add(s, frame_current->data[plane] + off, | |
461 | 790802 | s->stride[plane], s->block_coeff[b], s->idct_selector[b]); | |
462 | } | ||
463 | 136249 | break; | |
464 | |||
465 | 75970 | case VP56_MB_INTER_DELTA_PF: | |
466 | case VP56_MB_INTER_V1_PF: | ||
467 | case VP56_MB_INTER_V2_PF: | ||
468 | case VP56_MB_INTER_DELTA_GF: | ||
469 | case VP56_MB_INTER_4V: | ||
470 | case VP56_MB_INTER_V1_GF: | ||
471 | case VP56_MB_INTER_V2_GF: | ||
472 |
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519482 | for (b=0; b<b_max; b++) { |
473 |
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443512 | int x_off = b==1 || b==3 ? 8 : 0; |
474 |
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443512 | int y_off = b==2 || b==3 ? 8 : 0; |
475 | 443512 | plane = ff_vp56_b2p[b+ab]; | |
476 | 443512 | vp56_mc(s, b, plane, frame_ref->data[plane], s->stride[plane], | |
477 | 443512 | 16*col+x_off, 16*row+y_off); | |
478 | 443512 | vp56_idct_add(s, frame_current->data[plane] + s->block_offset[b], | |
479 | 443512 | s->stride[plane], s->block_coeff[b], s->idct_selector[b]); | |
480 | } | ||
481 | 75970 | break; | |
482 | } | ||
483 | |||
484 |
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245731 | if (is_alpha) { |
485 | 21204 | s->block_coeff[4][0] = 0; | |
486 | 21204 | s->block_coeff[5][0] = 0; | |
487 | } | ||
488 | } | ||
489 | |||
490 | 245369 | static int vp56_decode_mb(VP56Context *s, int row, int col, int is_alpha) | |
491 | { | ||
492 | VP56mb mb_type; | ||
493 | int ret; | ||
494 | |||
495 |
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245369 | if (s->frames[VP56_FRAME_CURRENT]->key_frame) |
496 | 9811 | mb_type = VP56_MB_INTRA; | |
497 | else | ||
498 | 235558 | mb_type = vp56_decode_mv(s, row, col); | |
499 | |||
500 | 245369 | ret = s->parse_coeff(s); | |
501 |
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245369 | if (ret < 0) |
502 | 1 | return ret; | |
503 | |||
504 | 245368 | vp56_render_mb(s, row, col, is_alpha, mb_type); | |
505 | |||
506 | 245368 | return 0; | |
507 | } | ||
508 | |||
509 | 363 | static int vp56_conceal_mb(VP56Context *s, int row, int col, int is_alpha) | |
510 | { | ||
511 | VP56mb mb_type; | ||
512 | |||
513 |
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363 | if (s->frames[VP56_FRAME_CURRENT]->key_frame) |
514 | ✗ | mb_type = VP56_MB_INTRA; | |
515 | else | ||
516 | 363 | mb_type = vp56_conceal_mv(s, row, col); | |
517 | |||
518 | 363 | vp56_render_mb(s, row, col, is_alpha, mb_type); | |
519 | |||
520 | 363 | return 0; | |
521 | } | ||
522 | |||
523 | 14 | static int vp56_size_changed(VP56Context *s) | |
524 | { | ||
525 | 14 | AVCodecContext *avctx = s->avctx; | |
526 | 14 | int stride = s->frames[VP56_FRAME_CURRENT]->linesize[0]; | |
527 | int i; | ||
528 | |||
529 | 14 | s->plane_width[0] = s->plane_width[3] = avctx->coded_width; | |
530 | 14 | s->plane_width[1] = s->plane_width[2] = avctx->coded_width/2; | |
531 | 14 | s->plane_height[0] = s->plane_height[3] = avctx->coded_height; | |
532 | 14 | s->plane_height[1] = s->plane_height[2] = avctx->coded_height/2; | |
533 | |||
534 | 14 | s->have_undamaged_frame = 0; | |
535 | |||
536 |
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70 | for (i=0; i<4; i++) |
537 | 56 | s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT]->linesize[i]; | |
538 | |||
539 | 14 | s->mb_width = (avctx->coded_width +15) / 16; | |
540 | 14 | s->mb_height = (avctx->coded_height+15) / 16; | |
541 | |||
542 |
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14 | if (s->mb_width > 1000 || s->mb_height > 1000) { |
543 | ✗ | ff_set_dimensions(avctx, 0, 0); | |
544 | ✗ | av_log(avctx, AV_LOG_ERROR, "picture too big\n"); | |
545 | ✗ | return AVERROR_INVALIDDATA; | |
546 | } | ||
547 | |||
548 | 14 | av_reallocp_array(&s->above_blocks, 4*s->mb_width+6, | |
549 | sizeof(*s->above_blocks)); | ||
550 | 14 | av_reallocp_array(&s->macroblocks, s->mb_width*s->mb_height, | |
551 | sizeof(*s->macroblocks)); | ||
552 | 14 | av_free(s->edge_emu_buffer_alloc); | |
553 | 14 | s->edge_emu_buffer_alloc = av_malloc(16*stride); | |
554 | 14 | s->edge_emu_buffer = s->edge_emu_buffer_alloc; | |
555 |
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14 | if (!s->above_blocks || !s->macroblocks || !s->edge_emu_buffer_alloc) |
556 | ✗ | return AVERROR(ENOMEM); | |
557 |
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14 | if (s->flip < 0) |
558 | 8 | s->edge_emu_buffer += 15 * stride; | |
559 | |||
560 |
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14 | if (s->alpha_context) |
561 | 2 | return vp56_size_changed(s->alpha_context); | |
562 | |||
563 | 12 | return 0; | |
564 | } | ||
565 | |||
566 | static int ff_vp56_decode_mbs(AVCodecContext *avctx, void *, int, int); | ||
567 | |||
568 | 867 | int ff_vp56_decode_frame(AVCodecContext *avctx, AVFrame *rframe, | |
569 | int *got_frame, AVPacket *avpkt) | ||
570 | { | ||
571 | 867 | const uint8_t *buf = avpkt->data; | |
572 | 867 | VP56Context *s = avctx->priv_data; | |
573 | 867 | AVFrame *const p = s->frames[VP56_FRAME_CURRENT]; | |
574 | 867 | int remaining_buf_size = avpkt->size; | |
575 | 867 | int alpha_offset = remaining_buf_size; | |
576 | int i, res; | ||
577 | int ret; | ||
578 | |||
579 |
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867 | if (s->has_alpha) { |
580 |
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186 | if (remaining_buf_size < 3) |
581 | ✗ | return AVERROR_INVALIDDATA; | |
582 | 186 | alpha_offset = bytestream_get_be24(&buf); | |
583 | 186 | remaining_buf_size -= 3; | |
584 |
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186 | if (remaining_buf_size < alpha_offset) |
585 | ✗ | return AVERROR_INVALIDDATA; | |
586 | } | ||
587 | |||
588 | 867 | res = s->parse_header(s, buf, alpha_offset); | |
589 |
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867 | if (res < 0) |
590 | ✗ | return res; | |
591 | |||
592 |
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867 | if (res == VP56_SIZE_CHANGE) { |
593 |
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60 | for (i = 0; i < 4; i++) { |
594 | 48 | av_frame_unref(s->frames[i]); | |
595 |
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48 | if (s->alpha_context) |
596 | 8 | av_frame_unref(s->alpha_context->frames[i]); | |
597 | } | ||
598 | } | ||
599 | |||
600 | 867 | ret = ff_get_buffer(avctx, p, AV_GET_BUFFER_FLAG_REF); | |
601 |
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867 | if (ret < 0) { |
602 | ✗ | if (res == VP56_SIZE_CHANGE) | |
603 | ✗ | ff_set_dimensions(avctx, 0, 0); | |
604 | ✗ | return ret; | |
605 | } | ||
606 | |||
607 |
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867 | if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) { |
608 | 93 | av_frame_unref(s->alpha_context->frames[VP56_FRAME_CURRENT]); | |
609 |
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93 | if ((ret = av_frame_ref(s->alpha_context->frames[VP56_FRAME_CURRENT], p)) < 0) { |
610 | ✗ | av_frame_unref(p); | |
611 | ✗ | if (res == VP56_SIZE_CHANGE) | |
612 | ✗ | ff_set_dimensions(avctx, 0, 0); | |
613 | ✗ | return ret; | |
614 | } | ||
615 | } | ||
616 | |||
617 |
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867 | if (res == VP56_SIZE_CHANGE) { |
618 |
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12 | if (vp56_size_changed(s)) { |
619 | ✗ | av_frame_unref(p); | |
620 | ✗ | return AVERROR_INVALIDDATA; | |
621 | } | ||
622 | } | ||
623 | |||
624 |
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867 | if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) { |
625 | 93 | int bak_w = avctx->width; | |
626 | 93 | int bak_h = avctx->height; | |
627 | 93 | int bak_cw = avctx->coded_width; | |
628 | 93 | int bak_ch = avctx->coded_height; | |
629 | 93 | buf += alpha_offset; | |
630 | 93 | remaining_buf_size -= alpha_offset; | |
631 | |||
632 | 93 | res = s->alpha_context->parse_header(s->alpha_context, buf, remaining_buf_size); | |
633 |
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93 | if (res != 0) { |
634 | ✗ | if(res==VP56_SIZE_CHANGE) { | |
635 | ✗ | av_log(avctx, AV_LOG_ERROR, "Alpha reconfiguration\n"); | |
636 | ✗ | avctx->width = bak_w; | |
637 | ✗ | avctx->height = bak_h; | |
638 | ✗ | avctx->coded_width = bak_cw; | |
639 | ✗ | avctx->coded_height = bak_ch; | |
640 | } | ||
641 | ✗ | av_frame_unref(p); | |
642 | ✗ | return AVERROR_INVALIDDATA; | |
643 | } | ||
644 | } | ||
645 | |||
646 | 867 | s->discard_frame = 0; | |
647 |
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867 | avctx->execute2(avctx, ff_vp56_decode_mbs, 0, 0, (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) + 1); |
648 | |||
649 |
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867 | if (s->discard_frame) |
650 | ✗ | return AVERROR_INVALIDDATA; | |
651 | |||
652 |
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867 | if ((res = av_frame_ref(rframe, p)) < 0) |
653 | ✗ | return res; | |
654 | 867 | *got_frame = 1; | |
655 | |||
656 | 867 | return avpkt->size; | |
657 | } | ||
658 | |||
659 | 960 | static int ff_vp56_decode_mbs(AVCodecContext *avctx, void *data, | |
660 | int jobnr, int threadnr) | ||
661 | { | ||
662 | 960 | VP56Context *s0 = avctx->priv_data; | |
663 | 960 | int is_alpha = (jobnr == 1); | |
664 |
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960 | VP56Context *s = is_alpha ? s0->alpha_context : s0; |
665 | 960 | AVFrame *const p = s->frames[VP56_FRAME_CURRENT]; | |
666 | 960 | int mb_row, mb_col, mb_row_flip, mb_offset = 0; | |
667 | int block, y, uv; | ||
668 | ptrdiff_t stride_y, stride_uv; | ||
669 | int res; | ||
670 | 960 | int damaged = 0; | |
671 | |||
672 |
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960 | if (p->key_frame) { |
673 | 44 | p->pict_type = AV_PICTURE_TYPE_I; | |
674 | 44 | s->default_models_init(s); | |
675 |
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9855 | for (block=0; block<s->mb_height*s->mb_width; block++) |
676 | 9811 | s->macroblocks[block].type = VP56_MB_INTRA; | |
677 | } else { | ||
678 | 916 | p->pict_type = AV_PICTURE_TYPE_P; | |
679 | 916 | vp56_parse_mb_type_models(s); | |
680 | 916 | s->parse_vector_models(s); | |
681 | 916 | s->mb_type = VP56_MB_INTER_NOVEC_PF; | |
682 | } | ||
683 | |||
684 |
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960 | if (s->parse_coeff_models(s)) |
685 | ✗ | goto next; | |
686 | |||
687 | 960 | memset(s->prev_dc, 0, sizeof(s->prev_dc)); | |
688 | 960 | s->prev_dc[1][VP56_FRAME_CURRENT] = 128; | |
689 | 960 | s->prev_dc[2][VP56_FRAME_CURRENT] = 128; | |
690 | |||
691 |
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74448 | for (block=0; block < 4*s->mb_width+6; block++) { |
692 | 73488 | s->above_blocks[block].ref_frame = VP56_FRAME_NONE; | |
693 | 73488 | s->above_blocks[block].dc_coeff = 0; | |
694 | 73488 | s->above_blocks[block].not_null_dc = 0; | |
695 | } | ||
696 | 960 | s->above_blocks[2*s->mb_width + 2].ref_frame = VP56_FRAME_CURRENT; | |
697 | 960 | s->above_blocks[3*s->mb_width + 4].ref_frame = VP56_FRAME_CURRENT; | |
698 | |||
699 | 960 | stride_y = p->linesize[0]; | |
700 | 960 | stride_uv = p->linesize[1]; | |
701 | |||
702 |
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960 | if (s->flip < 0) |
703 | 506 | mb_offset = 7; | |
704 | |||
705 | /* main macroblocks loop */ | ||
706 |
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12362 | for (mb_row=0; mb_row<s->mb_height; mb_row++) { |
707 |
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11402 | if (s->flip < 0) |
708 | 7179 | mb_row_flip = s->mb_height - mb_row - 1; | |
709 | else | ||
710 | 4223 | mb_row_flip = mb_row; | |
711 | |||
712 |
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57010 | for (block=0; block<4; block++) { |
713 | 45608 | s->left_block[block].ref_frame = VP56_FRAME_NONE; | |
714 | 45608 | s->left_block[block].dc_coeff = 0; | |
715 | 45608 | s->left_block[block].not_null_dc = 0; | |
716 | } | ||
717 | 11402 | memset(s->coeff_ctx, 0, sizeof(s->coeff_ctx)); | |
718 | 11402 | memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last)); | |
719 | |||
720 | 11402 | s->above_block_idx[0] = 1; | |
721 | 11402 | s->above_block_idx[1] = 2; | |
722 | 11402 | s->above_block_idx[2] = 1; | |
723 | 11402 | s->above_block_idx[3] = 2; | |
724 | 11402 | s->above_block_idx[4] = 2*s->mb_width + 2 + 1; | |
725 | 11402 | s->above_block_idx[5] = 3*s->mb_width + 4 + 1; | |
726 | |||
727 | 11402 | s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y; | |
728 | 11402 | s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y; | |
729 | 11402 | s->block_offset[1] = s->block_offset[0] + 8; | |
730 | 11402 | s->block_offset[3] = s->block_offset[2] + 8; | |
731 | 11402 | s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv; | |
732 | 11402 | s->block_offset[5] = s->block_offset[4]; | |
733 | |||
734 |
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257133 | for (mb_col=0; mb_col<s->mb_width; mb_col++) { |
735 |
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245731 | if (!damaged) { |
736 | 245369 | int ret = vp56_decode_mb(s, mb_row, mb_col, is_alpha); | |
737 |
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245369 | if (ret < 0) { |
738 | 1 | damaged = 1; | |
739 |
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1 | if (!s->have_undamaged_frame || !avctx->error_concealment) { |
740 | ✗ | s->discard_frame = 1; | |
741 | ✗ | return AVERROR_INVALIDDATA; | |
742 | } | ||
743 | } | ||
744 | } | ||
745 |
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245731 | if (damaged) |
746 | 363 | vp56_conceal_mb(s, mb_row, mb_col, is_alpha); | |
747 | |||
748 |
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1228655 | for (y=0; y<4; y++) { |
749 | 982924 | s->above_block_idx[y] += 2; | |
750 | 982924 | s->block_offset[y] += 16; | |
751 | } | ||
752 | |||
753 |
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737193 | for (uv=4; uv<6; uv++) { |
754 | 491462 | s->above_block_idx[uv] += 1; | |
755 | 491462 | s->block_offset[uv] += 8; | |
756 | } | ||
757 | } | ||
758 | } | ||
759 | |||
760 |
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960 | if (!damaged) |
761 | 959 | s->have_undamaged_frame = 1; | |
762 | |||
763 | 1 | next: | |
764 |
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960 | if (p->key_frame || s->golden_frame) { |
765 | 77 | av_frame_unref(s->frames[VP56_FRAME_GOLDEN]); | |
766 |
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77 | if ((res = av_frame_ref(s->frames[VP56_FRAME_GOLDEN], p)) < 0) |
767 | ✗ | return res; | |
768 | } | ||
769 | |||
770 | 960 | av_frame_unref(s->frames[VP56_FRAME_PREVIOUS]); | |
771 | 960 | FFSWAP(AVFrame *, s->frames[VP56_FRAME_CURRENT], | |
772 | s->frames[VP56_FRAME_PREVIOUS]); | ||
773 | 960 | return 0; | |
774 | } | ||
775 | |||
776 | 21 | av_cold int ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s, | |
777 | int flip, int has_alpha) | ||
778 | { | ||
779 | int i; | ||
780 | |||
781 | 21 | s->avctx = avctx; | |
782 |
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21 | avctx->pix_fmt = has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P; |
783 |
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21 | if (avctx->skip_alpha) avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
784 | |||
785 | 21 | ff_h264chroma_init(&s->h264chroma, 8); | |
786 | 21 | ff_hpeldsp_init(&s->hdsp, avctx->flags); | |
787 | 21 | ff_videodsp_init(&s->vdsp, 8); | |
788 | 21 | ff_vp3dsp_init(&s->vp3dsp, avctx->flags); | |
789 |
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1365 | for (i = 0; i < 64; i++) { |
790 | #define TRANSPOSE(x) (((x) >> 3) | (((x) & 7) << 3)) | ||
791 | 1344 | s->idct_scantable[i] = TRANSPOSE(ff_zigzag_direct[i]); | |
792 | #undef TRANSPOSE | ||
793 | } | ||
794 | |||
795 |
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105 | for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) { |
796 | 84 | s->frames[i] = av_frame_alloc(); | |
797 |
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84 | if (!s->frames[i]) |
798 | ✗ | return AVERROR(ENOMEM); | |
799 | } | ||
800 | 21 | s->edge_emu_buffer_alloc = NULL; | |
801 | |||
802 | 21 | s->above_blocks = NULL; | |
803 | 21 | s->macroblocks = NULL; | |
804 | 21 | s->quantizer = -1; | |
805 | 21 | s->deblock_filtering = 1; | |
806 | 21 | s->golden_frame = 0; | |
807 | |||
808 | 21 | s->filter = NULL; | |
809 | |||
810 | 21 | s->has_alpha = has_alpha; | |
811 | |||
812 | 21 | s->modelp = &s->model; | |
813 | |||
814 |
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21 | if (flip) { |
815 | 11 | s->flip = -1; | |
816 | 11 | s->frbi = 2; | |
817 | 11 | s->srbi = 0; | |
818 | } else { | ||
819 | 10 | s->flip = 1; | |
820 | 10 | s->frbi = 0; | |
821 | 10 | s->srbi = 2; | |
822 | } | ||
823 | |||
824 | 21 | return 0; | |
825 | } | ||
826 | |||
827 | 21 | av_cold int ff_vp56_free_context(VP56Context *s) | |
828 | { | ||
829 | int i; | ||
830 | |||
831 | 21 | av_freep(&s->above_blocks); | |
832 | 21 | av_freep(&s->macroblocks); | |
833 | 21 | av_freep(&s->edge_emu_buffer_alloc); | |
834 | |||
835 |
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105 | for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) |
836 | 84 | av_frame_free(&s->frames[i]); | |
837 | |||
838 | 21 | return 0; | |
839 | } | ||
840 |