FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/vp56.c
Date: 2025-07-28 20:30:09
Exec Total Coverage
Lines: 497 532 93.4%
Functions: 20 20 100.0%
Branches: 272 307 88.6%
Line Branch Exec Source
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 "libavutil/mem.h"
27 #include "avcodec.h"
28 #include "bytestream.h"
29 #include "decode.h"
30 #include "h264chroma.h"
31 #include "vp56.h"
32 #include "vp56data.h"
33 #include "vpx_rac.h"
34
35
36 1264 void ff_vp56_init_dequant(VP56Context *s, int quantizer)
37 {
38
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 1264 if (s->quantizer != quantizer)
39 410 ff_vp3dsp_set_bounding_values(s->bounding_values_array, ff_vp56_filter_threshold[quantizer]);
40 1264 s->quantizer = quantizer;
41 1264 s->dequant_dc = ff_vp56_dc_dequant[quantizer] << 2;
42 1264 s->dequant_ac = ff_vp56_ac_dequant[quantizer] << 2;
43 1264 }
44
45 240114 static int vp56_get_vectors_predictors(VP56Context *s, int row, int col,
46 VP56Frame ref_frame)
47 {
48 240114 int nb_pred = 0;
49 240114 VP56mv vect[2] = {{0,0}, {0,0}};
50 int pos, offset;
51 VP56mv mvp;
52
53
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 2458943 for (pos=0; pos<12; pos++) {
54 2296366 mvp.x = col + ff_vp56_candidate_predictor_pos[pos][0];
55 2296366 mvp.y = row + ff_vp56_candidate_predictor_pos[pos][1];
56
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 2296366 if (mvp.x < 0 || mvp.x >= s->mb_width ||
57
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 2138631 mvp.y < 0 || mvp.y >= s->mb_height)
58 376460 continue;
59 1919906 offset = mvp.x + s->mb_width*mvp.y;
60
61
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 1919906 if (ff_vp56_reference_frame[s->macroblocks[offset].type] != ref_frame)
62 332000 continue;
63
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 1587906 if ((s->macroblocks[offset].mv.x == vect[0].x &&
64
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 1295926 s->macroblocks[offset].mv.y == vect[0].y) ||
65
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 368334 (s->macroblocks[offset].mv.x == 0 &&
66
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 208346 s->macroblocks[offset].mv.y == 0))
67 1396960 continue;
68
69 190946 vect[nb_pred++] = s->macroblocks[offset].mv;
70
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 190946 if (nb_pred > 1) {
71 77537 nb_pred = -1;
72 77537 break;
73 }
74 113409 s->vector_candidate_pos = pos;
75 }
76
77 240114 s->vector_candidate[0] = vect[0];
78 240114 s->vector_candidate[1] = vect[1];
79
80 240114 return nb_pred+1;
81 }
82
83 1218 static void vp56_parse_mb_type_models(VP56Context *s)
84 {
85 1218 VPXRangeCoder *c = &s->c;
86 1218 VP56Model *model = s->modelp;
87 int i, ctx, type;
88
89
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 4872 for (ctx=0; ctx<3; ctx++) {
90
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 3654 if (vpx_rac_get_prob_branchy(c, 174)) {
91 730 int idx = vp56_rac_gets(c, 4);
92 730 memcpy(model->mb_types_stats[ctx],
93 730 ff_vp56_pre_def_mb_type_stats[idx][ctx],
94 sizeof(model->mb_types_stats[ctx]));
95 }
96
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 3654 if (vpx_rac_get_prob_branchy(c, 254)) {
97
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 1287 for (type=0; type<10; type++) {
98
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 3510 for(i=0; i<2; i++) {
99
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 2340 if (vpx_rac_get_prob_branchy(c, 205)) {
100 915 int delta, sign = vpx_rac_get(c);
101
102 915 delta = vp56_rac_get_tree(c, ff_vp56_pmbtm_tree,
103 ff_vp56_mb_type_model_model);
104
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 915 if (!delta)
105 139 delta = 4 * vp56_rac_gets(c, 7);
106 915 model->mb_types_stats[ctx][type][i] += (delta ^ -sign) + sign;
107 }
108 }
109 }
110 }
111 }
112
113 /* compute MB type probability tables based on previous MB type */
114
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 4872 for (ctx=0; ctx<3; ctx++) {
115 int p[10];
116
117
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 40194 for (type=0; type<10; type++)
118 36540 p[type] = 100 * model->mb_types_stats[ctx][type][1];
119
120
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 40194 for (type=0; type<10; type++) {
121 int p02, p34, p0234, p17, p56, p89, p5689, p156789;
122
123 /* conservative MB type probability */
124 36540 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]);
125
126 36540 p[type] = 0; /* same MB type => weight is null */
127
128 /* binary tree parsing probabilities */
129 36540 p02 = p[0] + p[2];
130 36540 p34 = p[3] + p[4];
131 36540 p0234 = p02 + p34;
132 36540 p17 = p[1] + p[7];
133 36540 p56 = p[5] + p[6];
134 36540 p89 = p[8] + p[9];
135 36540 p5689 = p56 + p89;
136 36540 p156789 = p17 + p5689;
137
138 36540 model->mb_type[ctx][type][1] = 1 + 255 * p0234/(1+p0234+p156789);
139 36540 model->mb_type[ctx][type][2] = 1 + 255 * p02 / (1+p0234);
140 36540 model->mb_type[ctx][type][3] = 1 + 255 * p17 / (1+p156789);
141 36540 model->mb_type[ctx][type][4] = 1 + 255 * p[0] / (1+p02);
142 36540 model->mb_type[ctx][type][5] = 1 + 255 * p[3] / (1+p34);
143 36540 model->mb_type[ctx][type][6] = 1 + 255 * p[1] / (1+p17);
144 36540 model->mb_type[ctx][type][7] = 1 + 255 * p56 / (1+p5689);
145 36540 model->mb_type[ctx][type][8] = 1 + 255 * p[5] / (1+p56);
146 36540 model->mb_type[ctx][type][9] = 1 + 255 * p[8] / (1+p89);
147
148 /* restore initial value */
149 36540 p[type] = 100 * model->mb_types_stats[ctx][type][1];
150 }
151 }
152 1218 }
153
154 237456 static VP56mb vp56_parse_mb_type(VP56Context *s,
155 VP56mb prev_type, int ctx)
156 {
157 237456 uint8_t *mb_type_model = s->modelp->mb_type[ctx][prev_type];
158 237456 VPXRangeCoder *c = &s->c;
159
160
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 237456 if (vpx_rac_get_prob_branchy(c, mb_type_model[0]))
161 179903 return prev_type;
162 else
163 57553 return vp56_rac_get_tree(c, ff_vp56_pmbt_tree, mb_type_model);
164 }
165
166 11044 static void vp56_decode_4mv(VP56Context *s, int row, int col)
167 {
168 11044 VP56mv mv = {0,0};
169 int type[4];
170 int b;
171
172 /* parse each block type */
173
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 55220 for (b=0; b<4; b++) {
174 44176 type[b] = vp56_rac_gets(&s->c, 2);
175
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 44176 if (type[b])
176 34983 type[b]++; /* only returns 0, 2, 3 or 4 (all INTER_PF) */
177 }
178
179 /* get vectors */
180
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 55220 for (b=0; b<4; b++) {
181
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 44176 switch (type[b]) {
182 9193 case VP56_MB_INTER_NOVEC_PF:
183 9193 s->mv[b] = (VP56mv) {0,0};
184 9193 break;
185 13235 case VP56_MB_INTER_DELTA_PF:
186 13235 s->parse_vector_adjustment(s, &s->mv[b]);
187 13235 break;
188 13066 case VP56_MB_INTER_V1_PF:
189 13066 s->mv[b] = s->vector_candidate[0];
190 13066 break;
191 8682 case VP56_MB_INTER_V2_PF:
192 8682 s->mv[b] = s->vector_candidate[1];
193 8682 break;
194 }
195 44176 mv.x += s->mv[b].x;
196 44176 mv.y += s->mv[b].y;
197 }
198
199 /* this is the one selected for the whole MB for prediction */
200 11044 s->macroblocks[row * s->mb_width + col].mv = s->mv[3];
201
202 /* chroma vectors are average luma vectors */
203
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 11044 s->mv[4].x = s->mv[5].x = RSHIFT(mv.x,2);
204
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 11044 s->mv[4].y = s->mv[5].y = RSHIFT(mv.y,2);
205 11044 }
206
207 237456 static VP56mb vp56_decode_mv(VP56Context *s, int row, int col)
208 {
209 237456 VP56mv *mv, vect = {0,0};
210 int ctx, b;
211
212 237456 ctx = vp56_get_vectors_predictors(s, row, col, VP56_FRAME_PREVIOUS);
213 237456 s->mb_type = vp56_parse_mb_type(s, s->mb_type, ctx);
214 237456 s->macroblocks[row * s->mb_width + col].type = s->mb_type;
215
216
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 237456 switch (s->mb_type) {
217 37072 case VP56_MB_INTER_V1_PF:
218 37072 mv = &s->vector_candidate[0];
219 37072 break;
220
221 11549 case VP56_MB_INTER_V2_PF:
222 11549 mv = &s->vector_candidate[1];
223 11549 break;
224
225 1054 case VP56_MB_INTER_V1_GF:
226 1054 vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN);
227 1054 mv = &s->vector_candidate[0];
228 1054 break;
229
230 160 case VP56_MB_INTER_V2_GF:
231 160 vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN);
232 160 mv = &s->vector_candidate[1];
233 160 break;
234
235 14864 case VP56_MB_INTER_DELTA_PF:
236 14864 s->parse_vector_adjustment(s, &vect);
237 14864 mv = &vect;
238 14864 break;
239
240 1444 case VP56_MB_INTER_DELTA_GF:
241 1444 vp56_get_vectors_predictors(s, row, col, VP56_FRAME_GOLDEN);
242 1444 s->parse_vector_adjustment(s, &vect);
243 1444 mv = &vect;
244 1444 break;
245
246 11044 case VP56_MB_INTER_4V:
247 11044 vp56_decode_4mv(s, row, col);
248 11044 return s->mb_type;
249
250 160269 default:
251 160269 mv = &vect;
252 160269 break;
253 }
254
255 226412 s->macroblocks[row*s->mb_width + col].mv = *mv;
256
257 /* same vector for all blocks */
258
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 1584884 for (b=0; b<6; b++)
259 1358472 s->mv[b] = *mv;
260
261 226412 return s->mb_type;
262 }
263
264 363 static VP56mb vp56_conceal_mv(VP56Context *s, int row, int col)
265 {
266 363 VP56mv *mv, vect = {0,0};
267 int b;
268
269 363 s->mb_type = VP56_MB_INTER_NOVEC_PF;
270 363 s->macroblocks[row * s->mb_width + col].type = s->mb_type;
271
272 363 mv = &vect;
273
274 363 s->macroblocks[row*s->mb_width + col].mv = *mv;
275
276 /* same vector for all blocks */
277
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 2541 for (b=0; b<6; b++)
278 2178 s->mv[b] = *mv;
279
280 363 return s->mb_type;
281 }
282
283 247641 static void vp56_add_predictors_dc(VP56Context *s, VP56Frame ref_frame)
284 {
285 247641 int idx = s->idct_scantable[0];
286 int b;
287
288
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 1733487 for (b=0; b<6; b++) {
289 1485846 VP56RefDc *ab = &s->above_blocks[s->above_block_idx[b]];
290 1485846 VP56RefDc *lb = &s->left_block[ff_vp56_b6to4[b]];
291 1485846 int count = 0;
292 1485846 int dc = 0;
293 int i;
294
295
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 1485846 if (ref_frame == lb->ref_frame) {
296 1396446 dc += lb->dc_coeff;
297 1396446 count++;
298 }
299
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 1485846 if (ref_frame == ab->ref_frame) {
300 1366006 dc += ab->dc_coeff;
301 1366006 count++;
302 }
303
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 1485846 if (s->avctx->codec->id == AV_CODEC_ID_VP5)
304
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 2703168 for (i=0; i<2; i++)
305
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 1802112 if (count < 2 && ref_frame == ab[-1+2*i].ref_frame) {
306 72112 dc += ab[-1+2*i].dc_coeff;
307 72112 count++;
308 }
309
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 1485846 if (count == 0)
310 19285 dc = s->prev_dc[ff_vp56_b2p[b]][ref_frame];
311
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 1466561 else if (count == 2)
312 1368003 dc /= 2;
313
314 1485846 s->block_coeff[b][idx] += dc;
315 1485846 s->prev_dc[ff_vp56_b2p[b]][ref_frame] = s->block_coeff[b][idx];
316 1485846 ab->dc_coeff = s->block_coeff[b][idx];
317 1485846 ab->ref_frame = ref_frame;
318 1485846 lb->dc_coeff = s->block_coeff[b][idx];
319 1485846 lb->ref_frame = ref_frame;
320 1485846 s->block_coeff[b][idx] *= s->dequant_dc;
321 }
322 247641 }
323
324 423610 static void vp56_deblock_filter(VP56Context *s, uint8_t *yuv,
325 ptrdiff_t stride, int dx, int dy)
326 {
327
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 423610 if (s->avctx->codec->id == AV_CODEC_ID_VP5) {
328 249618 int t = ff_vp56_filter_threshold[s->quantizer];
329
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 249618 if (dx) s->vp56dsp.edge_filter_hor(yuv + 10-dx , stride, t);
330
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 249618 if (dy) s->vp56dsp.edge_filter_ver(yuv + stride*(10-dy), stride, t);
331 } else {
332 173992 int * bounding_values = s->bounding_values_array + 127;
333
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 173992 if (dx)
334 66268 ff_vp3dsp_h_loop_filter_12(yuv + 10-dx, stride, bounding_values);
335
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 173992 if (dy)
336 63282 ff_vp3dsp_v_loop_filter_12(yuv + stride*(10-dy), stride, bounding_values);
337 }
338 423610 }
339
340 450808 static void vp56_mc(VP56Context *s, int b, int plane, uint8_t *src,
341 ptrdiff_t stride, int x, int y, ptrdiff_t ref_stride)
342 {
343 450808 uint8_t *dst = s->frames[VP56_FRAME_CURRENT]->data[plane] + s->block_offset[b];
344 uint8_t *src_block;
345 int src_offset;
346 450808 int overlap_offset = 0;
347 450808 int mask = s->vp56_coord_div[b] - 1;
348 450808 int deblock_filtering = s->deblock_filtering;
349 int dx;
350 int dy;
351
352
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 450808 if (s->avctx->skip_loop_filter >= AVDISCARD_ALL ||
353
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 450808 (s->avctx->skip_loop_filter >= AVDISCARD_NONKEY
354 ✗ && !(s->frames[VP56_FRAME_CURRENT]->flags & AV_FRAME_FLAG_KEY)))
355 ✗ deblock_filtering = 0;
356
357 450808 dx = s->mv[b].x / s->vp56_coord_div[b];
358 450808 dy = s->mv[b].y / s->vp56_coord_div[b];
359
360
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 450808 if (b >= 4) {
361 142064 x /= 2;
362 142064 y /= 2;
363 }
364 450808 x += dx - 2;
365 450808 y += dy - 2;
366
367
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 450808 if (s->interlaced && s->il_block) {
368 /* extract 12*(4+16+4) block from frame (containing both fields), then treat src_block as specific field */
369 282 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
370 282 src + s->block_offset[b] + (dy-4)*ref_stride + (dx-2),
371 ref_stride, ref_stride,
372 12, 24, x, y - 2,
373 s->plane_width[plane],
374 s->plane_height[plane]);
375 282 src_block = s->edge_emu_buffer;
376 282 src_offset = 2 + 4*ref_stride;
377
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 450526 } else if (x<0 || x+12>=s->plane_width[plane] ||
378
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 415217 y<0 || y+12>=s->plane_height[plane]) {
379 55107 s->vdsp.emulated_edge_mc(s->edge_emu_buffer,
380 55107 src + s->block_offset[b] + (dy-2)*stride + (dx-2),
381 stride, stride,
382 12, 12, x, y,
383 s->plane_width[plane],
384 s->plane_height[plane]);
385 55107 src_block = s->edge_emu_buffer;
386 55107 src_offset = 2 + 2*stride;
387
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 395419 } else if (deblock_filtering) {
388 /* only need a 12x12 block, but there is no such dsp function, */
389 /* so copy a 16x12 block */
390 375490 s->hdsp.put_pixels_tab[0][0](s->edge_emu_buffer,
391 375490 src + s->block_offset[b] + (dy-2)*stride + (dx-2),
392 stride, 12);
393 375490 src_block = s->edge_emu_buffer;
394 375490 src_offset = 2 + 2*stride;
395 } else {
396 19929 src_block = src;
397 19929 src_offset = s->block_offset[b] + dy*stride + dx;
398 }
399
400
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 450808 if (deblock_filtering)
401 423610 vp56_deblock_filter(s, src_block, stride, dx&7, dy&7);
402
403
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 450808 if (s->mv[b].x & mask)
404
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 288380 overlap_offset += (s->mv[b].x > 0) ? 1 : -1;
405
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 450808 if (s->mv[b].y & mask)
406
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 281078 overlap_offset += (s->mv[b].y > 0) ? stride : -stride;
407
408
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 450808 if (overlap_offset) {
409
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 393915 if (s->filter)
410 177796 s->filter(s, dst, src_block, src_offset, src_offset+overlap_offset,
411 stride, s->mv[b], mask, s->filter_selection, b<4);
412 else
413 216119 s->vp3dsp.put_no_rnd_pixels_l2(dst, src_block+src_offset,
414 216119 src_block+src_offset+overlap_offset,
415 stride, 8);
416 } else {
417 56893 s->hdsp.put_pixels_tab[1][0](dst, src_block+src_offset, stride, 8);
418 }
419 450808 }
420
421 197838 static void vp56_idct_put(VP56Context *s, uint8_t * dest, ptrdiff_t stride, int16_t *block, int selector)
422 {
423
3/4
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 197838 if (selector > 10 || selector == 1)
424 162845 s->vp3dsp.idct_put(dest, stride, block);
425 else
426 34993 ff_vp3dsp_idct10_put(dest, stride, block);
427 197838 }
428
429 1245600 static void vp56_idct_add(VP56Context *s, uint8_t * dest, ptrdiff_t stride, int16_t *block, int selector)
430 {
431
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 1245600 if (selector > 10)
432 874239 s->vp3dsp.idct_add(dest, stride, block);
433
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 371361 else if (selector > 1)
434 370942 ff_vp3dsp_idct10_add(dest, stride, block);
435 else
436 419 s->vp3dsp.idct_dc_add(dest, stride, block);
437 1245600 }
438
439 247641 static av_always_inline void vp56_render_mb(VP56Context *s, int row, int col, int is_alpha, VP56mb mb_type)
440 {
441 int b, ab, b_max, plane, off;
442 AVFrame *frame_current, *frame_ref;
443 247641 VP56Frame ref_frame = ff_vp56_reference_frame[mb_type];
444 ptrdiff_t ref_stride[4];
445
446 247641 vp56_add_predictors_dc(s, ref_frame);
447
448 247641 frame_current = s->frames[VP56_FRAME_CURRENT];
449 247641 frame_ref = s->frames[ref_frame];
450
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 247641 if (mb_type != VP56_MB_INTRA && !frame_ref->data[0])
451 ✗ return;
452
453 247641 memcpy(ref_stride, s->stride, sizeof(s->stride));
454
4/4
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 247641 if (s->interlaced && s->il_block) {
455 76 s->block_offset[2] -= s->stride[0] * 7;
456 76 s->block_offset[3] -= s->stride[0] * 7;
457 76 s->stride[0] *= 2;
458 }
459
460 247641 ab = 6*is_alpha;
461 247641 b_max = 6 - 2*is_alpha;
462
463
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 247641 switch (mb_type) {
464 33541 case VP56_MB_INTRA:
465
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 231379 for (b=0; b<b_max; b++) {
466 197838 plane = ff_vp56_b2p[b+ab];
467 197838 vp56_idct_put(s, frame_current->data[plane] + s->block_offset[b],
468 197838 s->stride[plane], s->block_coeff[b], s->idct_selector[b]);
469 }
470 33541 break;
471
472 136914 case VP56_MB_INTER_NOVEC_PF:
473 case VP56_MB_INTER_NOVEC_GF:
474
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 931706 for (b=0; b<b_max; b++) {
475 794792 plane = ff_vp56_b2p[b+ab];
476 794792 off = s->block_offset[b];
477 794792 s->hdsp.put_pixels_tab[1][0](frame_current->data[plane] + off,
478 794792 frame_ref->data[plane] + off,
479 s->stride[plane], 8);
480 794792 vp56_idct_add(s, frame_current->data[plane] + off,
481 794792 s->stride[plane], s->block_coeff[b], s->idct_selector[b]);
482 }
483 136914 break;
484
485 77186 case VP56_MB_INTER_DELTA_PF:
486 case VP56_MB_INTER_V1_PF:
487 case VP56_MB_INTER_V2_PF:
488 case VP56_MB_INTER_DELTA_GF:
489 case VP56_MB_INTER_4V:
490 case VP56_MB_INTER_V1_GF:
491 case VP56_MB_INTER_V2_GF:
492
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 527994 for (b=0; b<b_max; b++) {
493
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 450808 int x_off = b==1 || b==3 ? 8 : 0;
494
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✓ Branch 6 taken 94 times.
✓ Branch 7 taken 2214 times.
 450808 int y_off = b==2 || b==3 ? (s->interlaced && s->il_block ? 1 : 8) : 0;
495 450808 plane = ff_vp56_b2p[b+ab];
496 450808 vp56_mc(s, b, plane, frame_ref->data[plane], s->stride[plane],
497 450808 16*col+x_off, 16*row+y_off, ref_stride[plane]);
498 450808 vp56_idct_add(s, frame_current->data[plane] + s->block_offset[b],
499 450808 s->stride[plane], s->block_coeff[b], s->idct_selector[b]);
500 }
501 77186 break;
502 }
503
504
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 247641 if (is_alpha) {
505 21204 s->block_coeff[4][0] = 0;
506 21204 s->block_coeff[5][0] = 0;
507 }
508
509
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 247641 if (s->interlaced && s->il_block) {
510 76 s->stride[0] /= 2;
511 76 s->block_offset[2] += s->stride[0] * 7;
512 76 s->block_offset[3] += s->stride[0] * 7;
513 }
514 }
515
516 247279 static int vp56_decode_mb(VP56Context *s, int row, int col, int is_alpha)
517 {
518 VP56mb mb_type;
519 int ret;
520
521
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 247279 if (s->interlaced) {
522 1812 int prob = s->il_prob;
523
524
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✓ Branch 1 taken 906 times.
 1812 if (col > 0) {
525
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 906 if (s->il_block)
526 26 prob -= prob >> 1;
527 else
528 880 prob += (256 - prob) >> 1; /* can be simplified/combined */
529 }
530
531 1812 s->il_block = vpx_rac_get_prob(&s->c, prob);
532 }
533
534
2/2
✓ Branch 0 taken 9823 times.
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 247279 if (s->frames[VP56_FRAME_CURRENT]->flags & AV_FRAME_FLAG_KEY)
535 9823 mb_type = VP56_MB_INTRA;
536 else
537 237456 mb_type = vp56_decode_mv(s, row, col);
538
539 247279 ret = s->parse_coeff(s);
540
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 247279 if (ret < 0)
541 1 return ret;
542
543 247278 vp56_render_mb(s, row, col, is_alpha, mb_type);
544
545 247278 return 0;
546 }
547
548 363 static int vp56_conceal_mb(VP56Context *s, int row, int col, int is_alpha)
549 {
550 VP56mb mb_type;
551
552
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 363 if (s->frames[VP56_FRAME_CURRENT]->flags & AV_FRAME_FLAG_KEY)
553 ✗ mb_type = VP56_MB_INTRA;
554 else
555 363 mb_type = vp56_conceal_mv(s, row, col);
556
557 363 vp56_render_mb(s, row, col, is_alpha, mb_type);
558
559 363 return 0;
560 }
561
562 16 static int vp56_size_changed(VP56Context *s)
563 {
564 16 AVCodecContext *avctx = s->avctx;
565 16 int stride = s->frames[VP56_FRAME_CURRENT]->linesize[0];
566 int i;
567
568 16 s->plane_width[0] = s->plane_width[3] = avctx->coded_width;
569 16 s->plane_width[1] = s->plane_width[2] = avctx->coded_width/2;
570 16 s->plane_height[0] = s->plane_height[3] = avctx->coded_height;
571 16 s->plane_height[1] = s->plane_height[2] = avctx->coded_height/2;
572
573 16 s->have_undamaged_frame = 0;
574
575
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 80 for (i=0; i<4; i++)
576 64 s->stride[i] = s->flip * s->frames[VP56_FRAME_CURRENT]->linesize[i];
577
578 16 s->mb_width = (avctx->coded_width +15) / 16;
579 16 s->mb_height = (avctx->coded_height+15) / 16;
580
581
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 16 if (s->mb_width > 1000 || s->mb_height > 1000) {
582 ✗ ff_set_dimensions(avctx, 0, 0);
583 ✗ av_log(avctx, AV_LOG_ERROR, "picture too big\n");
584 ✗ return AVERROR_INVALIDDATA;
585 }
586
587 16 av_reallocp_array(&s->above_blocks, 4*s->mb_width+6,
588 sizeof(*s->above_blocks));
589 16 av_reallocp_array(&s->macroblocks, s->mb_width*s->mb_height,
590 sizeof(*s->macroblocks));
591 16 av_free(s->edge_emu_buffer_alloc);
592 16 s->edge_emu_buffer_alloc = av_malloc(16*stride*2);
593 16 s->edge_emu_buffer = s->edge_emu_buffer_alloc;
594
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 16 if (!s->above_blocks || !s->macroblocks || !s->edge_emu_buffer_alloc)
595 ✗ return AVERROR(ENOMEM);
596
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 16 if (s->flip < 0)
597 10 s->edge_emu_buffer += 15 * stride * 2;
598
599
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 16 if (s->alpha_context)
600 2 return vp56_size_changed(s->alpha_context);
601
602 14 return 0;
603 }
604
605 static int ff_vp56_decode_mbs(AVCodecContext *avctx, void *, int, int);
606
607 1171 int ff_vp56_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
608 int *got_frame, AVPacket *avpkt)
609 {
610 1171 const uint8_t *buf = avpkt->data;
611 1171 VP56Context *s = avctx->priv_data;
612 1171 AVFrame *const p = s->frames[VP56_FRAME_CURRENT];
613 1171 int remaining_buf_size = avpkt->size;
614 1171 int alpha_offset = remaining_buf_size;
615 int i, res;
616 int ret;
617
618
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 1171 if (s->has_alpha) {
619
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 186 if (remaining_buf_size < 3)
620 ✗ return AVERROR_INVALIDDATA;
621 186 alpha_offset = bytestream_get_be24(&buf);
622 186 remaining_buf_size -= 3;
623
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 186 if (remaining_buf_size < alpha_offset)
624 ✗ return AVERROR_INVALIDDATA;
625 }
626
627 1171 res = s->parse_header(s, buf, alpha_offset);
628
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 1171 if (res < 0)
629 ✗ return res;
630
631
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 1171 if (res == VP56_SIZE_CHANGE) {
632
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 70 for (i = 0; i < 4; i++) {
633 56 av_frame_unref(s->frames[i]);
634
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 56 if (s->alpha_context)
635 8 av_frame_unref(s->alpha_context->frames[i]);
636 }
637 14 s->frames[VP56_FRAME_CURRENT]->flags |= AV_FRAME_FLAG_KEY; //FIXME
638 }
639
640 1171 ret = ff_get_buffer(avctx, p, AV_GET_BUFFER_FLAG_REF);
641
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 1171 if (ret < 0) {
642 ✗ if (res == VP56_SIZE_CHANGE)
643 ✗ ff_set_dimensions(avctx, 0, 0);
644 ✗ return ret;
645 }
646
647
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 1171 if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) {
648
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 93 if ((ret = av_frame_replace(s->alpha_context->frames[VP56_FRAME_CURRENT], p)) < 0) {
649 ✗ av_frame_unref(p);
650 ✗ if (res == VP56_SIZE_CHANGE)
651 ✗ ff_set_dimensions(avctx, 0, 0);
652 ✗ return ret;
653 }
654 }
655
656
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 1171 if (res == VP56_SIZE_CHANGE) {
657
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 14 if (vp56_size_changed(s)) {
658 ✗ av_frame_unref(p);
659 ✗ return AVERROR_INVALIDDATA;
660 }
661 }
662
663
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 1171 if (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) {
664 93 int bak_w = avctx->width;
665 93 int bak_h = avctx->height;
666 93 int bak_cw = avctx->coded_width;
667 93 int bak_ch = avctx->coded_height;
668 93 buf += alpha_offset;
669 93 remaining_buf_size -= alpha_offset;
670
671 93 res = s->alpha_context->parse_header(s->alpha_context, buf, remaining_buf_size);
672
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 93 if (res != 0) {
673 ✗ if(res==VP56_SIZE_CHANGE) {
674 ✗ av_log(avctx, AV_LOG_ERROR, "Alpha reconfiguration\n");
675 ✗ avctx->width = bak_w;
676 ✗ avctx->height = bak_h;
677 ✗ avctx->coded_width = bak_cw;
678 ✗ avctx->coded_height = bak_ch;
679 }
680 ✗ av_frame_unref(p);
681 ✗ return AVERROR_INVALIDDATA;
682 }
683 }
684
685 1171 s->discard_frame = 0;
686
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 1171 avctx->execute2(avctx, ff_vp56_decode_mbs, 0, 0, (avctx->pix_fmt == AV_PIX_FMT_YUVA420P) + 1);
687
688
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 1171 if (s->discard_frame)
689 ✗ return AVERROR_INVALIDDATA;
690
691
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 1171 if ((res = av_frame_ref(rframe, p)) < 0)
692 ✗ return res;
693 1171 *got_frame = 1;
694
695 1171 return avpkt->size;
696 }
697
698 1264 static int ff_vp56_decode_mbs(AVCodecContext *avctx, void *data,
699 int jobnr, int threadnr)
700 {
701 1264 VP56Context *s0 = avctx->priv_data;
702 1264 int is_alpha = (jobnr == 1);
703
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 1264 VP56Context *s = is_alpha ? s0->alpha_context : s0;
704 1264 AVFrame *const p = s->frames[VP56_FRAME_CURRENT];
705 1264 int mb_row, mb_col, mb_row_flip, mb_offset = 0;
706 int block, y, uv;
707 ptrdiff_t stride_y, stride_uv;
708 int res;
709 1264 int damaged = 0;
710
711
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 1264 if (p->flags & AV_FRAME_FLAG_KEY) {
712 46 p->pict_type = AV_PICTURE_TYPE_I;
713 46 s->default_models_init(s);
714
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 9869 for (block=0; block<s->mb_height*s->mb_width; block++)
715 9823 s->macroblocks[block].type = VP56_MB_INTRA;
716 } else {
717 1218 p->pict_type = AV_PICTURE_TYPE_P;
718 1218 vp56_parse_mb_type_models(s);
719 1218 s->parse_vector_models(s);
720 1218 s->mb_type = VP56_MB_INTER_NOVEC_PF;
721 }
722
723
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✓ Branch 2 taken 1264 times.
 1264 if (s->parse_coeff_models(s))
724 ✗ goto next;
725
726
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 1264 if (s->interlaced) {
727 302 s->frames[VP56_FRAME_CURRENT]->flags |= AV_FRAME_FLAG_INTERLACED;
728 302 s->il_prob = vp56_rac_gets(&s->c, 8);
729 }
730
731 1264 memset(s->prev_dc, 0, sizeof(s->prev_dc));
732 1264 s->prev_dc[1][VP56_FRAME_CURRENT] = 128;
733 1264 s->prev_dc[2][VP56_FRAME_CURRENT] = 128;
734
735
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 79048 for (block=0; block < 4*s->mb_width+6; block++) {
736 77784 s->above_blocks[block].ref_frame = VP56_FRAME_NONE;
737 77784 s->above_blocks[block].dc_coeff = 0;
738 77784 s->above_blocks[block].not_null_dc = 0;
739 }
740 1264 s->above_blocks[2*s->mb_width + 2].ref_frame = VP56_FRAME_CURRENT;
741 1264 s->above_blocks[3*s->mb_width + 4].ref_frame = VP56_FRAME_CURRENT;
742
743 1264 stride_y = p->linesize[0];
744 1264 stride_uv = p->linesize[1];
745
746
2/2
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✓ Branch 1 taken 454 times.
 1264 if (s->flip < 0)
747 810 mb_offset = 7;
748
749 /* main macroblocks loop */
750
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 13586 for (mb_row=0; mb_row<s->mb_height; mb_row++) {
751
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✓ Branch 1 taken 4223 times.
 12322 if (s->flip < 0)
752 8099 mb_row_flip = s->mb_height - mb_row - 1;
753 else
754 4223 mb_row_flip = mb_row;
755
756
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✓ Branch 1 taken 12322 times.
 61610 for (block=0; block<4; block++) {
757 49288 s->left_block[block].ref_frame = VP56_FRAME_NONE;
758 49288 s->left_block[block].dc_coeff = 0;
759 49288 s->left_block[block].not_null_dc = 0;
760 }
761 12322 memset(s->coeff_ctx, 0, sizeof(s->coeff_ctx));
762 12322 memset(s->coeff_ctx_last, 24, sizeof(s->coeff_ctx_last));
763
764 12322 s->above_block_idx[0] = 1;
765 12322 s->above_block_idx[1] = 2;
766 12322 s->above_block_idx[2] = 1;
767 12322 s->above_block_idx[3] = 2;
768 12322 s->above_block_idx[4] = 2*s->mb_width + 2 + 1;
769 12322 s->above_block_idx[5] = 3*s->mb_width + 4 + 1;
770
771 12322 s->block_offset[s->frbi] = (mb_row_flip*16 + mb_offset) * stride_y;
772 12322 s->block_offset[s->srbi] = s->block_offset[s->frbi] + 8*stride_y;
773 12322 s->block_offset[1] = s->block_offset[0] + 8;
774 12322 s->block_offset[3] = s->block_offset[2] + 8;
775 12322 s->block_offset[4] = (mb_row_flip*8 + mb_offset) * stride_uv;
776 12322 s->block_offset[5] = s->block_offset[4];
777
778
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 259963 for (mb_col=0; mb_col<s->mb_width; mb_col++) {
779
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 247641 if (!damaged) {
780 247279 int ret = vp56_decode_mb(s, mb_row, mb_col, is_alpha);
781
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 247279 if (ret < 0) {
782 1 damaged = 1;
783
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✓ Branch 3 taken 1 times.
 1 if (!s->have_undamaged_frame || !avctx->error_concealment) {
784 ✗ s->discard_frame = 1;
785 ✗ return AVERROR_INVALIDDATA;
786 }
787 }
788 }
789
2/2
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✓ Branch 1 taken 247278 times.
 247641 if (damaged)
790 363 vp56_conceal_mb(s, mb_row, mb_col, is_alpha);
791
792
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 1238205 for (y=0; y<4; y++) {
793 990564 s->above_block_idx[y] += 2;
794 990564 s->block_offset[y] += 16;
795 }
796
797
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 742923 for (uv=4; uv<6; uv++) {
798 495282 s->above_block_idx[uv] += 1;
799 495282 s->block_offset[uv] += 8;
800 }
801 }
802 }
803
804
2/2
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 1264 if (!damaged)
805 1263 s->have_undamaged_frame = 1;
806
807 1 next:
808
4/4
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✓ Branch 3 taken 1185 times.
 1264 if ((p->flags & AV_FRAME_FLAG_KEY) || s->golden_frame) {
809
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✓ Branch 2 taken 79 times.
 79 if ((res = av_frame_replace(s->frames[VP56_FRAME_GOLDEN], p)) < 0)
810 ✗ return res;
811 }
812
813 1264 av_frame_unref(s->frames[VP56_FRAME_PREVIOUS]);
814 1264 FFSWAP(AVFrame *, s->frames[VP56_FRAME_CURRENT],
815 s->frames[VP56_FRAME_PREVIOUS]);
816 1264 return 0;
817 }
818
819 25 av_cold int ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s,
820 int flip, int has_alpha)
821 {
822 int i;
823
824 25 s->avctx = avctx;
825
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 25 avctx->pix_fmt = has_alpha ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
826
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 25 if (avctx->skip_alpha) avctx->pix_fmt = AV_PIX_FMT_YUV420P;
827
828 25 ff_h264chroma_init(&s->h264chroma, 8);
829 25 ff_hpeldsp_init(&s->hdsp, avctx->flags);
830 25 ff_videodsp_init(&s->vdsp, 8);
831 25 ff_vp3dsp_init(&s->vp3dsp, avctx->flags);
832
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 1625 for (i = 0; i < 64; i++) {
833 #define TRANSPOSE(x) (((x) >> 3) | (((x) & 7) << 3))
834 1600 s->idct_scantable[i] = TRANSPOSE(ff_zigzag_direct[i]);
835 #undef TRANSPOSE
836 }
837
838
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 125 for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++) {
839 100 s->frames[i] = av_frame_alloc();
840
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 100 if (!s->frames[i])
841 ✗ return AVERROR(ENOMEM);
842 }
843 25 s->edge_emu_buffer_alloc = NULL;
844
845 25 s->above_blocks = NULL;
846 25 s->macroblocks = NULL;
847 25 s->quantizer = -1;
848 25 s->deblock_filtering = 1;
849 25 s->golden_frame = 0;
850
851 25 s->filter = NULL;
852
853 25 s->has_alpha = has_alpha;
854
855 25 s->modelp = &s->model;
856
857
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 25 if (flip) {
858 15 s->flip = -1;
859 15 s->frbi = 2;
860 15 s->srbi = 0;
861 } else {
862 10 s->flip = 1;
863 10 s->frbi = 0;
864 10 s->srbi = 2;
865 }
866
867 25 return 0;
868 }
869
870 25 av_cold int ff_vp56_free_context(VP56Context *s)
871 {
872 int i;
873
874 25 av_freep(&s->above_blocks);
875 25 av_freep(&s->macroblocks);
876 25 av_freep(&s->edge_emu_buffer_alloc);
877
878
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 125 for (i = 0; i < FF_ARRAY_ELEMS(s->frames); i++)
879 100 av_frame_free(&s->frames[i]);
880
881 25 return 0;
882 }
883