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1 | /* | ||
2 | * MPEG-1/2 decoder | ||
3 | * Copyright (c) 2000, 2001 Fabrice Bellard | ||
4 | * Copyright (c) 2002-2013 Michael Niedermayer <michaelni@gmx.at> | ||
5 | * | ||
6 | * This file is part of FFmpeg. | ||
7 | * | ||
8 | * FFmpeg is free software; you can redistribute it and/or | ||
9 | * modify it under the terms of the GNU Lesser General Public | ||
10 | * License as published by the Free Software Foundation; either | ||
11 | * version 2.1 of the License, or (at your option) any later version. | ||
12 | * | ||
13 | * FFmpeg is distributed in the hope that it will be useful, | ||
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
16 | * Lesser General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU Lesser General Public | ||
19 | * License along with FFmpeg; if not, write to the Free Software | ||
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
21 | */ | ||
22 | |||
23 | /** | ||
24 | * @file | ||
25 | * MPEG-1/2 decoder | ||
26 | */ | ||
27 | |||
28 | #include "config_components.h" | ||
29 | |||
30 | #define UNCHECKED_BITSTREAM_READER 1 | ||
31 | #include <inttypes.h> | ||
32 | #include <stdatomic.h> | ||
33 | |||
34 | #include "libavutil/attributes.h" | ||
35 | #include "libavutil/emms.h" | ||
36 | #include "libavutil/imgutils.h" | ||
37 | #include "libavutil/internal.h" | ||
38 | #include "libavutil/mem_internal.h" | ||
39 | #include "libavutil/reverse.h" | ||
40 | #include "libavutil/stereo3d.h" | ||
41 | #include "libavutil/timecode.h" | ||
42 | |||
43 | #include "avcodec.h" | ||
44 | #include "codec_internal.h" | ||
45 | #include "decode.h" | ||
46 | #include "error_resilience.h" | ||
47 | #include "get_bits.h" | ||
48 | #include "hwaccel_internal.h" | ||
49 | #include "hwconfig.h" | ||
50 | #include "idctdsp.h" | ||
51 | #include "mpeg_er.h" | ||
52 | #include "mpeg12.h" | ||
53 | #include "mpeg12codecs.h" | ||
54 | #include "mpeg12data.h" | ||
55 | #include "mpeg12dec.h" | ||
56 | #include "mpegutils.h" | ||
57 | #include "mpegvideo.h" | ||
58 | #include "mpegvideodata.h" | ||
59 | #include "mpegvideodec.h" | ||
60 | #include "profiles.h" | ||
61 | #include "startcode.h" | ||
62 | |||
63 | #define A53_MAX_CC_COUNT 2000 | ||
64 | |||
65 | enum Mpeg2ClosedCaptionsFormat { | ||
66 | CC_FORMAT_AUTO, | ||
67 | CC_FORMAT_A53_PART4, | ||
68 | CC_FORMAT_SCTE20, | ||
69 | CC_FORMAT_DVD, | ||
70 | CC_FORMAT_DISH | ||
71 | }; | ||
72 | |||
73 | typedef struct Mpeg12SliceContext { | ||
74 | MPVContext c; | ||
75 | GetBitContext gb; | ||
76 | |||
77 | DECLARE_ALIGNED_32(int16_t, block)[12][64]; | ||
78 | } Mpeg12SliceContext; | ||
79 | |||
80 | typedef struct Mpeg1Context { | ||
81 | Mpeg12SliceContext slice; | ||
82 | AVPanScan pan_scan; /* some temporary storage for the panscan */ | ||
83 | enum AVStereo3DType stereo3d_type; | ||
84 | int has_stereo3d; | ||
85 | AVBufferRef *a53_buf_ref; | ||
86 | enum Mpeg2ClosedCaptionsFormat cc_format; | ||
87 | uint8_t afd; | ||
88 | int has_afd; | ||
89 | int slice_count; | ||
90 | unsigned aspect_ratio_info; | ||
91 | int save_progressive_seq, save_chroma_format; | ||
92 | AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */ | ||
93 | unsigned frame_rate_index; | ||
94 | int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */ | ||
95 | int closed_gop; | ||
96 | int tmpgexs; | ||
97 | int first_slice; | ||
98 | int extradata_decoded; | ||
99 | int vbv_delay; | ||
100 | int64_t bit_rate; | ||
101 | int64_t timecode_frame_start; /*< GOP timecode frame start number, in non drop frame format */ | ||
102 | } Mpeg1Context; | ||
103 | |||
104 | /* as H.263, but only 17 codes */ | ||
105 | 5373206 | static int mpeg_decode_motion(Mpeg12SliceContext *const s, int fcode, int pred) | |
106 | { | ||
107 | int code, sign, val, shift; | ||
108 | |||
109 | 5373206 | code = get_vlc2(&s->gb, ff_mv_vlc, MV_VLC_BITS, 2); | |
110 |
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5373206 | if (code == 0) |
111 | 1998838 | return pred; | |
112 |
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3374368 | if (code < 0) |
113 | ✗ | return 0xffff; | |
114 | |||
115 | 3374368 | sign = get_bits1(&s->gb); | |
116 | 3374368 | shift = fcode - 1; | |
117 | 3374368 | val = code; | |
118 |
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3374368 | if (shift) { |
119 | 3034708 | val = (val - 1) << shift; | |
120 | 3034708 | val |= get_bits(&s->gb, shift); | |
121 | 3034708 | val++; | |
122 | } | ||
123 |
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3374368 | if (sign) |
124 | 1744312 | val = -val; | |
125 | 3374368 | val += pred; | |
126 | |||
127 | /* modulo decoding */ | ||
128 | 3374368 | return sign_extend(val, 5 + shift); | |
129 | } | ||
130 | |||
131 | #define MAX_INDEX (64 - 1) | ||
132 | #define check_scantable_index(ctx, x) \ | ||
133 | do { \ | ||
134 | if ((x) > MAX_INDEX) { \ | ||
135 | av_log(ctx->c.avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", \ | ||
136 | ctx->c.mb_x, ctx->c.mb_y); \ | ||
137 | return AVERROR_INVALIDDATA; \ | ||
138 | } \ | ||
139 | } while (0) | ||
140 | |||
141 | 403182 | static inline int mpeg1_decode_block_inter(Mpeg12SliceContext *const s, | |
142 | int16_t *block, int n) | ||
143 | { | ||
144 | int level, i, j, run; | ||
145 | 403182 | const uint8_t *const scantable = s->c.intra_scantable.permutated; | |
146 | 403182 | const uint16_t *quant_matrix = s->c.inter_matrix; | |
147 | 403182 | const int qscale = s->c.qscale; | |
148 | |||
149 | { | ||
150 | 403182 | OPEN_READER(re, &s->gb); | |
151 | 403182 | i = -1; | |
152 | // special case for first coefficient, no need to add second VLC table | ||
153 | 403182 | UPDATE_CACHE(re, &s->gb); | |
154 |
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403182 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
155 | 101925 | level = (3 * qscale * quant_matrix[0]) >> 5; | |
156 | 101925 | level = (level - 1) | 1; | |
157 |
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101925 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
158 | 57008 | level = -level; | |
159 | 101925 | block[0] = level; | |
160 | 101925 | i++; | |
161 | 101925 | SKIP_BITS(re, &s->gb, 2); | |
162 |
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101925 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
163 | 34409 | goto end; | |
164 | } | ||
165 | /* now quantify & encode AC coefficients */ | ||
166 | for (;;) { | ||
167 |
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2920654 | GET_RL_VLC(level, run, re, &s->gb, ff_mpeg1_rl_vlc, |
168 | TEX_VLC_BITS, 2, 0); | ||
169 | |||
170 |
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2920654 | if (level != 0) { |
171 | 2841520 | i += run; | |
172 |
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2841520 | if (i > MAX_INDEX) |
173 | ✗ | break; | |
174 | 2841520 | j = scantable[i]; | |
175 | 2841520 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
176 | 2841520 | level = (level - 1) | 1; | |
177 | 2841520 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - | |
178 | 2841520 | SHOW_SBITS(re, &s->gb, 1); | |
179 | 2841520 | SKIP_BITS(re, &s->gb, 1); | |
180 | } else { | ||
181 | /* escape */ | ||
182 | 79134 | run = SHOW_UBITS(re, &s->gb, 6) + 1; | |
183 | 79134 | LAST_SKIP_BITS(re, &s->gb, 6); | |
184 | 79134 | UPDATE_CACHE(re, &s->gb); | |
185 | 79134 | level = SHOW_SBITS(re, &s->gb, 8); | |
186 | 79134 | SKIP_BITS(re, &s->gb, 8); | |
187 |
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79134 | if (level == -128) { |
188 | ✗ | level = SHOW_UBITS(re, &s->gb, 8) - 256; | |
189 | ✗ | SKIP_BITS(re, &s->gb, 8); | |
190 |
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79134 | } else if (level == 0) { |
191 | ✗ | level = SHOW_UBITS(re, &s->gb, 8); | |
192 | ✗ | SKIP_BITS(re, &s->gb, 8); | |
193 | } | ||
194 | 79134 | i += run; | |
195 |
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79134 | if (i > MAX_INDEX) |
196 | ✗ | break; | |
197 | 79134 | j = scantable[i]; | |
198 |
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79134 | if (level < 0) { |
199 | 38931 | level = -level; | |
200 | 38931 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
201 | 38931 | level = (level - 1) | 1; | |
202 | 38931 | level = -level; | |
203 | } else { | ||
204 | 40203 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
205 | 40203 | level = (level - 1) | 1; | |
206 | } | ||
207 | } | ||
208 | |||
209 | 2920654 | block[j] = level; | |
210 |
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2920654 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
211 | 368773 | break; | |
212 | 2551881 | UPDATE_CACHE(re, &s->gb); | |
213 | } | ||
214 | 403182 | end: | |
215 | 403182 | LAST_SKIP_BITS(re, &s->gb, 2); | |
216 | 403182 | CLOSE_READER(re, &s->gb); | |
217 | } | ||
218 | |||
219 |
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403182 | check_scantable_index(s, i); |
220 | |||
221 | 403182 | s->c.block_last_index[n] = i; | |
222 | 403182 | return 0; | |
223 | } | ||
224 | |||
225 | 5104903 | static inline int mpeg2_decode_block_non_intra(Mpeg12SliceContext *const s, | |
226 | int16_t *block, int n) | ||
227 | { | ||
228 | int level, i, j, run; | ||
229 | 5104903 | const uint8_t *const scantable = s->c.intra_scantable.permutated; | |
230 | const uint16_t *quant_matrix; | ||
231 | 5104903 | const int qscale = s->c.qscale; | |
232 | int mismatch; | ||
233 | |||
234 | 5104903 | mismatch = 1; | |
235 | |||
236 | { | ||
237 | 5104903 | OPEN_READER(re, &s->gb); | |
238 | 5104903 | i = -1; | |
239 |
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5104903 | if (n < 4) |
240 | 3817688 | quant_matrix = s->c.inter_matrix; | |
241 | else | ||
242 | 1287215 | quant_matrix = s->c.chroma_inter_matrix; | |
243 | |||
244 | // Special case for first coefficient, no need to add second VLC table. | ||
245 | 5104903 | UPDATE_CACHE(re, &s->gb); | |
246 |
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5104903 | if (((int32_t) GET_CACHE(re, &s->gb)) < 0) { |
247 | 1867226 | level = (3 * qscale * quant_matrix[0]) >> 5; | |
248 |
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1867226 | if (GET_CACHE(re, &s->gb) & 0x40000000) |
249 | 1180352 | level = -level; | |
250 | 1867226 | block[0] = level; | |
251 | 1867226 | mismatch ^= level; | |
252 | 1867226 | i++; | |
253 | 1867226 | SKIP_BITS(re, &s->gb, 2); | |
254 |
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1867226 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
255 | 889331 | goto end; | |
256 | } | ||
257 | |||
258 | /* now quantify & encode AC coefficients */ | ||
259 | for (;;) { | ||
260 |
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18245517 | GET_RL_VLC(level, run, re, &s->gb, ff_mpeg1_rl_vlc, |
261 | TEX_VLC_BITS, 2, 0); | ||
262 | |||
263 |
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18245517 | if (level != 0) { |
264 | 17973791 | i += run; | |
265 |
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17973791 | if (i > MAX_INDEX) |
266 | ✗ | break; | |
267 | 17973791 | j = scantable[i]; | |
268 | 17973791 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
269 | 17973791 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - | |
270 | 17973791 | SHOW_SBITS(re, &s->gb, 1); | |
271 | 17973791 | SKIP_BITS(re, &s->gb, 1); | |
272 | } else { | ||
273 | /* escape */ | ||
274 | 271726 | run = SHOW_UBITS(re, &s->gb, 6) + 1; | |
275 | 271726 | LAST_SKIP_BITS(re, &s->gb, 6); | |
276 | 271726 | UPDATE_CACHE(re, &s->gb); | |
277 | 271726 | level = SHOW_SBITS(re, &s->gb, 12); | |
278 | 271726 | SKIP_BITS(re, &s->gb, 12); | |
279 | |||
280 | 271726 | i += run; | |
281 |
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271726 | if (i > MAX_INDEX) |
282 | ✗ | break; | |
283 | 271726 | j = scantable[i]; | |
284 |
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271726 | if (level < 0) { |
285 | 131787 | level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
286 | 131787 | level = -level; | |
287 | } else { | ||
288 | 139939 | level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5; | |
289 | } | ||
290 | } | ||
291 | |||
292 | 18245517 | mismatch ^= level; | |
293 | 18245517 | block[j] = level; | |
294 |
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18245517 | if (((int32_t) GET_CACHE(re, &s->gb)) <= (int32_t) 0xBFFFFFFF) |
295 | 4215572 | break; | |
296 | 14029945 | UPDATE_CACHE(re, &s->gb); | |
297 | } | ||
298 | 5104903 | end: | |
299 | 5104903 | LAST_SKIP_BITS(re, &s->gb, 2); | |
300 | 5104903 | CLOSE_READER(re, &s->gb); | |
301 | } | ||
302 | 5104903 | block[63] ^= (mismatch & 1); | |
303 | |||
304 |
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5104903 | check_scantable_index(s, i); |
305 | |||
306 | 5104903 | s->c.block_last_index[n] = i; | |
307 | 5104903 | return 0; | |
308 | } | ||
309 | |||
310 | 1911794 | static inline int mpeg2_decode_block_intra(Mpeg12SliceContext *const s, | |
311 | int16_t *block, int n) | ||
312 | { | ||
313 | int level, dc, diff, i, j, run; | ||
314 | int component; | ||
315 | const RL_VLC_ELEM *rl_vlc; | ||
316 | 1911794 | const uint8_t *const scantable = s->c.intra_scantable.permutated; | |
317 | const uint16_t *quant_matrix; | ||
318 | 1911794 | const int qscale = s->c.qscale; | |
319 | int mismatch; | ||
320 | |||
321 | /* DC coefficient */ | ||
322 |
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1911794 | if (n < 4) { |
323 | 1202324 | quant_matrix = s->c.intra_matrix; | |
324 | 1202324 | component = 0; | |
325 | } else { | ||
326 | 709470 | quant_matrix = s->c.chroma_intra_matrix; | |
327 | 709470 | component = (n & 1) + 1; | |
328 | } | ||
329 | 1911794 | diff = decode_dc(&s->gb, component); | |
330 | 1911794 | dc = s->c.last_dc[component]; | |
331 | 1911794 | dc += diff; | |
332 | 1911794 | s->c.last_dc[component] = dc; | |
333 | 1911794 | block[0] = dc * (1 << (3 - s->c.intra_dc_precision)); | |
334 | ff_tlog(s->c.avctx, "dc=%d\n", block[0]); | ||
335 | 1911794 | mismatch = block[0] ^ 1; | |
336 | 1911794 | i = 0; | |
337 |
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1911794 | if (s->c.intra_vlc_format) |
338 | 1329248 | rl_vlc = ff_mpeg2_rl_vlc; | |
339 | else | ||
340 | 582546 | rl_vlc = ff_mpeg1_rl_vlc; | |
341 | |||
342 | { | ||
343 | 1911794 | OPEN_READER(re, &s->gb); | |
344 | /* now quantify & encode AC coefficients */ | ||
345 | for (;;) { | ||
346 | 26546080 | UPDATE_CACHE(re, &s->gb); | |
347 |
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14228937 | GET_RL_VLC(level, run, re, &s->gb, rl_vlc, |
348 | TEX_VLC_BITS, 2, 0); | ||
349 | |||
350 |
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14228937 | if (level == 127) { |
351 | 1911784 | break; | |
352 |
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12317153 | } else if (level != 0) { |
353 | 12182709 | i += run; | |
354 |
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12182709 | if (i > MAX_INDEX) |
355 | 10 | break; | |
356 | 12182699 | j = scantable[i]; | |
357 | 12182699 | level = (level * qscale * quant_matrix[j]) >> 4; | |
358 | 12182699 | level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - | |
359 | 12182699 | SHOW_SBITS(re, &s->gb, 1); | |
360 | 12182699 | LAST_SKIP_BITS(re, &s->gb, 1); | |
361 | } else { | ||
362 | /* escape */ | ||
363 | 134444 | run = SHOW_UBITS(re, &s->gb, 6) + 1; | |
364 | 134444 | SKIP_BITS(re, &s->gb, 6); | |
365 | 134444 | level = SHOW_SBITS(re, &s->gb, 12); | |
366 | 134444 | LAST_SKIP_BITS(re, &s->gb, 12); | |
367 | 134444 | i += run; | |
368 |
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134444 | if (i > MAX_INDEX) |
369 | ✗ | break; | |
370 | 134444 | j = scantable[i]; | |
371 |
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134444 | if (level < 0) { |
372 | 59977 | level = (-level * qscale * quant_matrix[j]) >> 4; | |
373 | 59977 | level = -level; | |
374 | } else { | ||
375 | 74467 | level = (level * qscale * quant_matrix[j]) >> 4; | |
376 | } | ||
377 | } | ||
378 | |||
379 | 12317143 | mismatch ^= level; | |
380 | 12317143 | block[j] = level; | |
381 | } | ||
382 | 1911794 | CLOSE_READER(re, &s->gb); | |
383 | } | ||
384 | 1911794 | block[63] ^= mismatch & 1; | |
385 | |||
386 |
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1911794 | check_scantable_index(s, i); |
387 | |||
388 | 1911784 | return 0; | |
389 | } | ||
390 | |||
391 | 42416 | static inline int get_dmv(Mpeg12SliceContext *const s) | |
392 | { | ||
393 |
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42416 | if (get_bits1(&s->gb)) |
394 | 39530 | return 1 - (get_bits1(&s->gb) << 1); | |
395 | else | ||
396 | 2886 | return 0; | |
397 | } | ||
398 | |||
399 | /* motion type (for MPEG-2) */ | ||
400 | #define MT_FIELD 1 | ||
401 | #define MT_FRAME 2 | ||
402 | #define MT_16X8 2 | ||
403 | #define MT_DMV 3 | ||
404 | |||
405 | 2599678 | static int mpeg_decode_mb(Mpeg12SliceContext *const s, int *mb_skip_run) | |
406 | { | ||
407 | int i, j, k, cbp, val, mb_type, motion_type; | ||
408 | 2599678 | const int mb_block_count = 4 + (1 << s->c.chroma_format); | |
409 | int ret; | ||
410 | |||
411 | ff_tlog(s->c.avctx, "decode_mb: x=%d y=%d\n", s->c.mb_x, s->c.mb_y); | ||
412 | |||
413 | av_assert2(s->c.mb_skipped == 0); | ||
414 | |||
415 |
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2599678 | if ((*mb_skip_run)-- != 0) { |
416 |
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165489 | if (s->c.pict_type == AV_PICTURE_TYPE_P) { |
417 | 57324 | s->c.mb_skipped = 1; | |
418 | 57324 | s->c.cur_pic.mb_type[s->c.mb_x + s->c.mb_y * s->c.mb_stride] = | |
419 | MB_TYPE_SKIP | MB_TYPE_FORWARD_MV | MB_TYPE_16x16; | ||
420 | } else { | ||
421 | int mb_type; | ||
422 | |||
423 |
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108165 | if (s->c.mb_x) |
424 | 108165 | mb_type = s->c.cur_pic.mb_type[s->c.mb_x + s->c.mb_y * s->c.mb_stride - 1]; | |
425 | else | ||
426 | // FIXME not sure if this is allowed in MPEG at all | ||
427 | ✗ | mb_type = s->c.cur_pic.mb_type[s->c.mb_width + (s->c.mb_y - 1) * s->c.mb_stride - 1]; | |
428 |
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108165 | if (IS_INTRA(mb_type)) { |
429 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "skip with previntra\n"); | |
430 | ✗ | return AVERROR_INVALIDDATA; | |
431 | } | ||
432 | 108165 | s->c.cur_pic.mb_type[s->c.mb_x + s->c.mb_y * s->c.mb_stride] = | |
433 | 108165 | mb_type | MB_TYPE_SKIP; | |
434 | |||
435 |
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108165 | if ((s->c.mv[0][0][0] | s->c.mv[0][0][1] | s->c.mv[1][0][0] | s->c.mv[1][0][1]) == 0) |
436 | 75614 | s->c.mb_skipped = 1; | |
437 | } | ||
438 | |||
439 | 165489 | return 0; | |
440 | } | ||
441 | |||
442 |
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2434189 | switch (s->c.pict_type) { |
443 | 239208 | default: | |
444 | case AV_PICTURE_TYPE_I: | ||
445 |
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239208 | if (get_bits1(&s->gb) == 0) { |
446 |
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17897 | if (get_bits1(&s->gb) == 0) { |
447 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
448 | "Invalid mb type in I-frame at %d %d\n", | ||
449 | s->c.mb_x, s->c.mb_y); | ||
450 | ✗ | return AVERROR_INVALIDDATA; | |
451 | } | ||
452 | 17897 | mb_type = MB_TYPE_QUANT | MB_TYPE_INTRA; | |
453 | } else { | ||
454 | 221311 | mb_type = MB_TYPE_INTRA; | |
455 | } | ||
456 | 239208 | break; | |
457 | 1332562 | case AV_PICTURE_TYPE_P: | |
458 | 1332562 | mb_type = get_vlc2(&s->gb, ff_mb_ptype_vlc, MB_PTYPE_VLC_BITS, 1); | |
459 |
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1332562 | if (mb_type < 0) { |
460 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
461 | "Invalid mb type in P-frame at %d %d\n", s->c.mb_x, s->c.mb_y); | ||
462 | ✗ | return AVERROR_INVALIDDATA; | |
463 | } | ||
464 | 1332562 | break; | |
465 | 862419 | case AV_PICTURE_TYPE_B: | |
466 | 862419 | mb_type = get_vlc2(&s->gb, ff_mb_btype_vlc, MB_BTYPE_VLC_BITS, 1); | |
467 |
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862419 | if (mb_type < 0) { |
468 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
469 | "Invalid mb type in B-frame at %d %d\n", s->c.mb_x, s->c.mb_y); | ||
470 | ✗ | return AVERROR_INVALIDDATA; | |
471 | } | ||
472 | 862419 | break; | |
473 | } | ||
474 | ff_tlog(s->c.avctx, "mb_type=%x\n", mb_type); | ||
475 | // motion_type = 0; /* avoid warning */ | ||
476 |
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2434189 | if (IS_INTRA(mb_type)) { |
477 | 321590 | s->c.bdsp.clear_blocks(s->block[0]); | |
478 | |||
479 |
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|
321590 | if (!s->c.chroma_y_shift) |
480 | 54159 | s->c.bdsp.clear_blocks(s->block[6]); | |
481 | |||
482 | /* compute DCT type */ | ||
483 | // FIXME: add an interlaced_dct coded var? | ||
484 |
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321590 | if (s->c.picture_structure == PICT_FRAME && |
485 |
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264101 | !s->c.frame_pred_frame_dct) |
486 | 120800 | s->c.interlaced_dct = get_bits1(&s->gb); | |
487 | |||
488 |
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|
321590 | if (IS_QUANT(mb_type)) |
489 | 25930 | s->c.qscale = mpeg_get_qscale(&s->gb, s->c.q_scale_type); | |
490 | |||
491 |
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|
321590 | if (s->c.concealment_motion_vectors) { |
492 | /* just parse them */ | ||
493 |
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1356 | if (s->c.picture_structure != PICT_FRAME) |
494 | 1350 | skip_bits1(&s->gb); /* field select */ | |
495 | |||
496 | 1356 | s->c.mv[0][0][0] = | |
497 | 1356 | s->c.last_mv[0][0][0] = | |
498 | 1356 | s->c.last_mv[0][1][0] = mpeg_decode_motion(s, s->c.mpeg_f_code[0][0], | |
499 | s->c.last_mv[0][0][0]); | ||
500 | 1356 | s->c.mv[0][0][1] = | |
501 | 1356 | s->c.last_mv[0][0][1] = | |
502 | 1356 | s->c.last_mv[0][1][1] = mpeg_decode_motion(s, s->c.mpeg_f_code[0][1], | |
503 | s->c.last_mv[0][0][1]); | ||
504 | |||
505 | 1356 | check_marker(s->c.avctx, &s->gb, "after concealment_motion_vectors"); | |
506 | } else { | ||
507 | /* reset mv prediction */ | ||
508 | 320234 | memset(s->c.last_mv, 0, sizeof(s->c.last_mv)); | |
509 | } | ||
510 | 321590 | s->c.mb_intra = 1; | |
511 | |||
512 |
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|
321590 | if (s->c.codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
513 |
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|
2212370 | for (i = 0; i < mb_block_count; i++) |
514 |
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1911794 | if ((ret = mpeg2_decode_block_intra(s, s->block[i], i)) < 0) |
515 | 10 | return ret; | |
516 | } else { | ||
517 |
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147028 | for (i = 0; i < 6; i++) { |
518 | 126024 | ret = ff_mpeg1_decode_block_intra(&s->gb, | |
519 | 126024 | s->c.intra_matrix, | |
520 | 126024 | s->c.intra_scantable.permutated, | |
521 | 126024 | s->c.last_dc, s->block[i], | |
522 | i, s->c.qscale); | ||
523 |
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126024 | if (ret < 0) { |
524 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", | |
525 | s->c.mb_x, s->c.mb_y); | ||
526 | ✗ | return ret; | |
527 | } | ||
528 | } | ||
529 | } | ||
530 | } else { | ||
531 |
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|
2112599 | if (mb_type & MB_TYPE_ZERO_MV) { |
532 | av_assert2(mb_type & MB_TYPE_CBP); | ||
533 | |||
534 | 211402 | s->c.mv_dir = MV_DIR_FORWARD; | |
535 |
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211402 | if (s->c.picture_structure == PICT_FRAME) { |
536 |
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88137 | if (s->c.picture_structure == PICT_FRAME |
537 |
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88137 | && !s->c.frame_pred_frame_dct) |
538 | 53569 | s->c.interlaced_dct = get_bits1(&s->gb); | |
539 | 88137 | s->c.mv_type = MV_TYPE_16X16; | |
540 | } else { | ||
541 | 123265 | s->c.mv_type = MV_TYPE_FIELD; | |
542 | 123265 | mb_type |= MB_TYPE_INTERLACED; | |
543 | 123265 | s->c.field_select[0][0] = s->c.picture_structure - 1; | |
544 | } | ||
545 | |||
546 |
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|
211402 | if (IS_QUANT(mb_type)) |
547 | 51453 | s->c.qscale = mpeg_get_qscale(&s->gb, s->c.q_scale_type); | |
548 | |||
549 | 211402 | s->c.last_mv[0][0][0] = 0; | |
550 | 211402 | s->c.last_mv[0][0][1] = 0; | |
551 | 211402 | s->c.last_mv[0][1][0] = 0; | |
552 | 211402 | s->c.last_mv[0][1][1] = 0; | |
553 | 211402 | s->c.mv[0][0][0] = 0; | |
554 | 211402 | s->c.mv[0][0][1] = 0; | |
555 | } else { | ||
556 | av_assert2(mb_type & MB_TYPE_BIDIR_MV); | ||
557 | // FIXME decide if MBs in field pictures are MB_TYPE_INTERLACED | ||
558 | /* get additional motion vector type */ | ||
559 |
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1901197 | if (s->c.picture_structure == PICT_FRAME && s->c.frame_pred_frame_dct) { |
560 | 700747 | motion_type = MT_FRAME; | |
561 | } else { | ||
562 | 1200450 | motion_type = get_bits(&s->gb, 2); | |
563 |
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|
1200450 | if (s->c.picture_structure == PICT_FRAME && HAS_CBP(mb_type)) |
564 | 517484 | s->c.interlaced_dct = get_bits1(&s->gb); | |
565 | } | ||
566 | |||
567 |
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1901197 | if (IS_QUANT(mb_type)) |
568 | 172852 | s->c.qscale = mpeg_get_qscale(&s->gb, s->c.q_scale_type); | |
569 | |||
570 | /* motion vectors */ | ||
571 | 1901197 | s->c.mv_dir = MB_TYPE_MV_2_MV_DIR(mb_type); | |
572 | ff_tlog(s->c.avctx, "motion_type=%d\n", motion_type); | ||
573 |
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1901197 | switch (motion_type) { |
574 | 1619099 | case MT_FRAME: /* or MT_16X8 */ | |
575 |
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1619099 | if (s->c.picture_structure == PICT_FRAME) { |
576 | 1334163 | mb_type |= MB_TYPE_16x16; | |
577 | 1334163 | s->c.mv_type = MV_TYPE_16X16; | |
578 |
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4002489 | for (i = 0; i < 2; i++) { |
579 |
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2668326 | if (HAS_MV(mb_type, i)) { |
580 | /* MT_FRAME */ | ||
581 | 1718958 | s->c.mv[i][0][0] = | |
582 | 1718958 | s->c.last_mv[i][0][0] = | |
583 | 1718958 | s->c.last_mv[i][1][0] = | |
584 | 1718958 | mpeg_decode_motion(s, s->c.mpeg_f_code[i][0], | |
585 | s->c.last_mv[i][0][0]); | ||
586 | 1718958 | s->c.mv[i][0][1] = | |
587 | 1718958 | s->c.last_mv[i][0][1] = | |
588 | 1718958 | s->c.last_mv[i][1][1] = | |
589 | 1718958 | mpeg_decode_motion(s, s->c.mpeg_f_code[i][1], | |
590 | s->c.last_mv[i][0][1]); | ||
591 | /* full_pel: only for MPEG-1 */ | ||
592 |
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1718958 | if (s->c.full_pel[i]) { |
593 | ✗ | s->c.mv[i][0][0] *= 2; | |
594 | ✗ | s->c.mv[i][0][1] *= 2; | |
595 | } | ||
596 | } | ||
597 | } | ||
598 | } else { | ||
599 | 284936 | mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; | |
600 | 284936 | s->c.mv_type = MV_TYPE_16X8; | |
601 |
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854808 | for (i = 0; i < 2; i++) { |
602 |
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569872 | if (HAS_MV(mb_type, i)) { |
603 | /* MT_16X8 */ | ||
604 |
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858894 | for (j = 0; j < 2; j++) { |
605 | 572596 | s->c.field_select[i][j] = get_bits1(&s->gb); | |
606 |
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1717788 | for (k = 0; k < 2; k++) { |
607 | 1145192 | val = mpeg_decode_motion(s, s->c.mpeg_f_code[i][k], | |
608 | s->c.last_mv[i][j][k]); | ||
609 | 1145192 | s->c.last_mv[i][j][k] = val; | |
610 | 1145192 | s->c.mv[i][j][k] = val; | |
611 | } | ||
612 | } | ||
613 | } | ||
614 | } | ||
615 | } | ||
616 | 1619099 | break; | |
617 | 260890 | case MT_FIELD: | |
618 | 260890 | s->c.mv_type = MV_TYPE_FIELD; | |
619 |
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260890 | if (s->c.picture_structure == PICT_FRAME) { |
620 | 70591 | mb_type |= MB_TYPE_16x8 | MB_TYPE_INTERLACED; | |
621 |
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211773 | for (i = 0; i < 2; i++) { |
622 |
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141182 | if (HAS_MV(mb_type, i)) { |
623 |
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266268 | for (j = 0; j < 2; j++) { |
624 | 177512 | s->c.field_select[i][j] = get_bits1(&s->gb); | |
625 | 177512 | val = mpeg_decode_motion(s, s->c.mpeg_f_code[i][0], | |
626 | s->c.last_mv[i][j][0]); | ||
627 | 177512 | s->c.last_mv[i][j][0] = val; | |
628 | 177512 | s->c.mv[i][j][0] = val; | |
629 | ff_tlog(s->c.avctx, "fmx=%d\n", val); | ||
630 | 177512 | val = mpeg_decode_motion(s, s->c.mpeg_f_code[i][1], | |
631 | 177512 | s->c.last_mv[i][j][1] >> 1); | |
632 | 177512 | s->c.last_mv[i][j][1] = 2 * val; | |
633 | 177512 | s->c.mv[i][j][1] = val; | |
634 | ff_tlog(s->c.avctx, "fmy=%d\n", val); | ||
635 | } | ||
636 | } | ||
637 | } | ||
638 | } else { | ||
639 |
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190299 | av_assert0(!s->c.progressive_sequence); |
640 | 190299 | mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; | |
641 |
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570897 | for (i = 0; i < 2; i++) { |
642 |
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380598 | if (HAS_MV(mb_type, i)) { |
643 | 194973 | s->c.field_select[i][0] = get_bits1(&s->gb); | |
644 |
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584919 | for (k = 0; k < 2; k++) { |
645 | 389946 | val = mpeg_decode_motion(s, s->c.mpeg_f_code[i][k], | |
646 | s->c.last_mv[i][0][k]); | ||
647 | 389946 | s->c.last_mv[i][0][k] = val; | |
648 | 389946 | s->c.last_mv[i][1][k] = val; | |
649 | 389946 | s->c.mv[i][0][k] = val; | |
650 | } | ||
651 | } | ||
652 | } | ||
653 | } | ||
654 | 260890 | break; | |
655 | 21208 | case MT_DMV: | |
656 |
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21208 | if (s->c.progressive_sequence){ |
657 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "MT_DMV in progressive_sequence\n"); | |
658 | ✗ | return AVERROR_INVALIDDATA; | |
659 | } | ||
660 | 21208 | s->c.mv_type = MV_TYPE_DMV; | |
661 |
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63624 | for (i = 0; i < 2; i++) { |
662 |
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42416 | if (HAS_MV(mb_type, i)) { |
663 | int dmx, dmy, mx, my, m; | ||
664 | 21208 | const int my_shift = s->c.picture_structure == PICT_FRAME; | |
665 | |||
666 | 21208 | mx = mpeg_decode_motion(s, s->c.mpeg_f_code[i][0], | |
667 | s->c.last_mv[i][0][0]); | ||
668 | 21208 | s->c.last_mv[i][0][0] = mx; | |
669 | 21208 | s->c.last_mv[i][1][0] = mx; | |
670 | 21208 | dmx = get_dmv(s); | |
671 | 21208 | my = mpeg_decode_motion(s, s->c.mpeg_f_code[i][1], | |
672 | 21208 | s->c.last_mv[i][0][1] >> my_shift); | |
673 | 21208 | dmy = get_dmv(s); | |
674 | |||
675 | |||
676 | 21208 | s->c.last_mv[i][0][1] = my * (1 << my_shift); | |
677 | 21208 | s->c.last_mv[i][1][1] = my * (1 << my_shift); | |
678 | |||
679 | 21208 | s->c.mv[i][0][0] = mx; | |
680 | 21208 | s->c.mv[i][0][1] = my; | |
681 | 21208 | s->c.mv[i][1][0] = mx; // not used | |
682 | 21208 | s->c.mv[i][1][1] = my; // not used | |
683 | |||
684 |
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21208 | if (s->c.picture_structure == PICT_FRAME) { |
685 | ✗ | mb_type |= MB_TYPE_16x16 | MB_TYPE_INTERLACED; | |
686 | |||
687 | // m = 1 + 2 * s->c.top_field_first; | ||
688 | ✗ | m = s->c.top_field_first ? 1 : 3; | |
689 | |||
690 | /* top -> top pred */ | ||
691 | ✗ | s->c.mv[i][2][0] = ((mx * m + (mx > 0)) >> 1) + dmx; | |
692 | ✗ | s->c.mv[i][2][1] = ((my * m + (my > 0)) >> 1) + dmy - 1; | |
693 | ✗ | m = 4 - m; | |
694 | ✗ | s->c.mv[i][3][0] = ((mx * m + (mx > 0)) >> 1) + dmx; | |
695 | ✗ | s->c.mv[i][3][1] = ((my * m + (my > 0)) >> 1) + dmy + 1; | |
696 | } else { | ||
697 | 21208 | mb_type |= MB_TYPE_16x16; | |
698 | |||
699 | 21208 | s->c.mv[i][2][0] = ((mx + (mx > 0)) >> 1) + dmx; | |
700 | 21208 | s->c.mv[i][2][1] = ((my + (my > 0)) >> 1) + dmy; | |
701 |
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21208 | if (s->c.picture_structure == PICT_TOP_FIELD) |
702 | 18148 | s->c.mv[i][2][1]--; | |
703 | else | ||
704 | 3060 | s->c.mv[i][2][1]++; | |
705 | } | ||
706 | } | ||
707 | } | ||
708 | 21208 | break; | |
709 | ✗ | default: | |
710 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
711 | "00 motion_type at %d %d\n", s->c.mb_x, s->c.mb_y); | ||
712 | ✗ | return AVERROR_INVALIDDATA; | |
713 | } | ||
714 | } | ||
715 | |||
716 | 2112599 | s->c.mb_intra = 0; | |
717 | 2112599 | s->c.last_dc[0] = s->c.last_dc[1] = s->c.last_dc[2] = 128 << s->c.intra_dc_precision; | |
718 |
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2112599 | if (HAS_CBP(mb_type)) { |
719 | 1691670 | s->c.bdsp.clear_blocks(s->block[0]); | |
720 | |||
721 | 1691670 | cbp = get_vlc2(&s->gb, ff_mb_pat_vlc, MB_PAT_VLC_BITS, 1); | |
722 |
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|
1691670 | if (mb_block_count > 6) { |
723 | 43689 | cbp *= 1 << mb_block_count - 6; | |
724 | 43689 | cbp |= get_bits(&s->gb, mb_block_count - 6); | |
725 | 43689 | s->c.bdsp.clear_blocks(s->block[6]); | |
726 | } | ||
727 |
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1691670 | if (cbp <= 0) { |
728 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
729 | "invalid cbp %d at %d %d\n", cbp, s->c.mb_x, s->c.mb_y); | ||
730 | ✗ | return AVERROR_INVALIDDATA; | |
731 | } | ||
732 | |||
733 |
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1691670 | if (s->c.codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
734 | 1579934 | cbp <<= 12 - mb_block_count; | |
735 | |||
736 |
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11146916 | for (i = 0; i < mb_block_count; i++) { |
737 |
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9566982 | if (cbp & (1 << 11)) { |
738 |
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5104903 | if ((ret = mpeg2_decode_block_non_intra(s, s->block[i], i)) < 0) |
739 | ✗ | return ret; | |
740 | } else { | ||
741 | 4462079 | s->c.block_last_index[i] = -1; | |
742 | } | ||
743 | 9566982 | cbp += cbp; | |
744 | } | ||
745 | } else { | ||
746 |
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782152 | for (i = 0; i < 6; i++) { |
747 |
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670416 | if (cbp & 32) { |
748 |
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403182 | if ((ret = mpeg1_decode_block_inter(s, s->block[i], i)) < 0) |
749 | ✗ | return ret; | |
750 | } else { | ||
751 | 267234 | s->c.block_last_index[i] = -1; | |
752 | } | ||
753 | 670416 | cbp += cbp; | |
754 | } | ||
755 | } | ||
756 | } else { | ||
757 |
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5472077 | for (i = 0; i < 12; i++) |
758 | 5051148 | s->c.block_last_index[i] = -1; | |
759 | } | ||
760 | } | ||
761 | |||
762 | 2434179 | s->c.cur_pic.mb_type[s->c.mb_x + s->c.mb_y * s->c.mb_stride] = mb_type; | |
763 | |||
764 | 2434179 | return 0; | |
765 | } | ||
766 | |||
767 | 288 | static av_cold int mpeg_decode_init(AVCodecContext *avctx) | |
768 | { | ||
769 | 288 | Mpeg1Context *s = avctx->priv_data; | |
770 | 288 | MPVContext *const s2 = &s->slice.c; | |
771 | int ret; | ||
772 | |||
773 | 288 | s2->slice_ctx_size = sizeof(s->slice); | |
774 | 288 | s2->out_format = FMT_MPEG1; | |
775 | |||
776 |
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288 | if ( avctx->codec_tag != AV_RL32("VCR2") |
777 |
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286 | && avctx->codec_tag != AV_RL32("BW10")) |
778 | 286 | avctx->coded_width = avctx->coded_height = 0; // do not trust dimensions from input | |
779 | 288 | ret = ff_mpv_decode_init(s2, avctx); | |
780 |
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288 | if (ret < 0) |
781 | ✗ | return ret; | |
782 | |||
783 | 288 | ff_mpeg12_init_vlcs(); | |
784 | |||
785 | 288 | s2->chroma_format = CHROMA_420; | |
786 | 288 | avctx->color_range = AVCOL_RANGE_MPEG; | |
787 | 288 | return 0; | |
788 | } | ||
789 | |||
790 | static const enum AVPixelFormat mpeg1_hwaccel_pixfmt_list_420[] = { | ||
791 | #if CONFIG_MPEG1_NVDEC_HWACCEL | ||
792 | AV_PIX_FMT_CUDA, | ||
793 | #endif | ||
794 | #if CONFIG_MPEG1_VDPAU_HWACCEL | ||
795 | AV_PIX_FMT_VDPAU, | ||
796 | #endif | ||
797 | AV_PIX_FMT_YUV420P, | ||
798 | AV_PIX_FMT_NONE | ||
799 | }; | ||
800 | |||
801 | static const enum AVPixelFormat mpeg2_hwaccel_pixfmt_list_420[] = { | ||
802 | #if CONFIG_MPEG2_NVDEC_HWACCEL | ||
803 | AV_PIX_FMT_CUDA, | ||
804 | #endif | ||
805 | #if CONFIG_MPEG2_VDPAU_HWACCEL | ||
806 | AV_PIX_FMT_VDPAU, | ||
807 | #endif | ||
808 | #if CONFIG_MPEG2_DXVA2_HWACCEL | ||
809 | AV_PIX_FMT_DXVA2_VLD, | ||
810 | #endif | ||
811 | #if CONFIG_MPEG2_D3D11VA_HWACCEL | ||
812 | AV_PIX_FMT_D3D11VA_VLD, | ||
813 | AV_PIX_FMT_D3D11, | ||
814 | #endif | ||
815 | #if CONFIG_MPEG2_D3D12VA_HWACCEL | ||
816 | AV_PIX_FMT_D3D12, | ||
817 | #endif | ||
818 | #if CONFIG_MPEG2_VAAPI_HWACCEL | ||
819 | AV_PIX_FMT_VAAPI, | ||
820 | #endif | ||
821 | #if CONFIG_MPEG2_VIDEOTOOLBOX_HWACCEL | ||
822 | AV_PIX_FMT_VIDEOTOOLBOX, | ||
823 | #endif | ||
824 | AV_PIX_FMT_YUV420P, | ||
825 | AV_PIX_FMT_NONE | ||
826 | }; | ||
827 | |||
828 | static const enum AVPixelFormat mpeg12_pixfmt_list_422[] = { | ||
829 | AV_PIX_FMT_YUV422P, | ||
830 | AV_PIX_FMT_NONE | ||
831 | }; | ||
832 | |||
833 | static const enum AVPixelFormat mpeg12_pixfmt_list_444[] = { | ||
834 | AV_PIX_FMT_YUV444P, | ||
835 | AV_PIX_FMT_NONE | ||
836 | }; | ||
837 | |||
838 | 261 | static enum AVPixelFormat mpeg_get_pixelformat(AVCodecContext *avctx) | |
839 | { | ||
840 | 261 | Mpeg1Context *s1 = avctx->priv_data; | |
841 | 261 | MPVContext *const s = &s1->slice.c; | |
842 | const enum AVPixelFormat *pix_fmts; | ||
843 | |||
844 | if (CONFIG_GRAY && (avctx->flags & AV_CODEC_FLAG_GRAY)) | ||
845 | return AV_PIX_FMT_GRAY8; | ||
846 | |||
847 |
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261 | if (s->chroma_format < CHROMA_422) |
848 | 200 | pix_fmts = avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO ? | |
849 |
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200 | mpeg1_hwaccel_pixfmt_list_420 : |
850 | mpeg2_hwaccel_pixfmt_list_420; | ||
851 |
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61 | else if (s->chroma_format == CHROMA_422) |
852 | 61 | pix_fmts = mpeg12_pixfmt_list_422; | |
853 | else | ||
854 | ✗ | pix_fmts = mpeg12_pixfmt_list_444; | |
855 | |||
856 | 261 | return ff_get_format(avctx, pix_fmts); | |
857 | } | ||
858 | |||
859 | /* Call this function when we know all parameters. | ||
860 | * It may be called in different places for MPEG-1 and MPEG-2. */ | ||
861 | 5050 | static int mpeg_decode_postinit(AVCodecContext *avctx) | |
862 | { | ||
863 | 5050 | Mpeg1Context *s1 = avctx->priv_data; | |
864 | 5050 | MPVContext *const s = &s1->slice.c; | |
865 | int ret; | ||
866 | |||
867 |
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5050 | if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) { |
868 | // MPEG-1 aspect | ||
869 | 494 | AVRational aspect_inv = av_d2q(ff_mpeg1_aspect[s1->aspect_ratio_info], 255); | |
870 | 494 | avctx->sample_aspect_ratio = (AVRational) { aspect_inv.den, aspect_inv.num }; | |
871 | } else { // MPEG-2 | ||
872 | // MPEG-2 aspect | ||
873 |
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4556 | if (s1->aspect_ratio_info > 1) { |
874 | AVRational dar = | ||
875 | 2516 | av_mul_q(av_div_q(ff_mpeg2_aspect[s1->aspect_ratio_info], | |
876 | 2516 | (AVRational) { s1->pan_scan.width, | |
877 | 2516 | s1->pan_scan.height }), | |
878 | 2516 | (AVRational) { s->width, s->height }); | |
879 | |||
880 | /* We ignore the spec here and guess a bit as reality does not | ||
881 | * match the spec, see for example res_change_ffmpeg_aspect.ts | ||
882 | * and sequence-display-aspect.mpg. | ||
883 | * issue1613, 621, 562 */ | ||
884 |
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3099 | if ((s1->pan_scan.width == 0) || (s1->pan_scan.height == 0) || |
885 |
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610 | (av_cmp_q(dar, (AVRational) { 4, 3 }) && |
886 | 27 | av_cmp_q(dar, (AVRational) { 16, 9 }))) { | |
887 | 1959 | s->avctx->sample_aspect_ratio = | |
888 | 1959 | av_div_q(ff_mpeg2_aspect[s1->aspect_ratio_info], | |
889 | 1959 | (AVRational) { s->width, s->height }); | |
890 | } else { | ||
891 | 557 | s->avctx->sample_aspect_ratio = | |
892 | 557 | av_div_q(ff_mpeg2_aspect[s1->aspect_ratio_info], | |
893 | 557 | (AVRational) { s1->pan_scan.width, s1->pan_scan.height }); | |
894 | // issue1613 4/3 16/9 -> 16/9 | ||
895 | // res_change_ffmpeg_aspect.ts 4/3 225/44 ->4/3 | ||
896 | // widescreen-issue562.mpg 4/3 16/9 -> 16/9 | ||
897 | // s->avctx->sample_aspect_ratio = av_mul_q(s->avctx->sample_aspect_ratio, (AVRational) {s->width, s->height}); | ||
898 | ff_dlog(avctx, "aspect A %d/%d\n", | ||
899 | ff_mpeg2_aspect[s1->aspect_ratio_info].num, | ||
900 | ff_mpeg2_aspect[s1->aspect_ratio_info].den); | ||
901 | ff_dlog(avctx, "aspect B %d/%d\n", s->avctx->sample_aspect_ratio.num, | ||
902 | s->avctx->sample_aspect_ratio.den); | ||
903 | } | ||
904 | } else { | ||
905 | 2040 | s->avctx->sample_aspect_ratio = | |
906 | 2040 | ff_mpeg2_aspect[s1->aspect_ratio_info]; | |
907 | } | ||
908 | } // MPEG-2 | ||
909 | |||
910 |
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5050 | if (av_image_check_sar(s->width, s->height, |
911 | avctx->sample_aspect_ratio) < 0) { | ||
912 | ✗ | av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", | |
913 | avctx->sample_aspect_ratio.num, | ||
914 | avctx->sample_aspect_ratio.den); | ||
915 | ✗ | avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; | |
916 | } | ||
917 | |||
918 |
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5050 | if (!s->context_initialized || |
919 |
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4791 | avctx->coded_width != s->width || |
920 |
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4791 | avctx->coded_height != s->height || |
921 |
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4791 | s1->save_chroma_format != s->chroma_format || |
922 |
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4791 | (s1->save_progressive_seq != s->progressive_sequence && FFALIGN(s->height, 16) != FFALIGN(s->height, 32)) || |
923 | 0) { | ||
924 |
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259 | if (s->context_initialized) |
925 | ✗ | ff_mpv_common_end(s); | |
926 | |||
927 | 259 | ret = ff_set_dimensions(avctx, s->width, s->height); | |
928 |
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259 | if (ret < 0) |
929 | ✗ | return ret; | |
930 | |||
931 |
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259 | if (avctx->codec_id == AV_CODEC_ID_MPEG2VIDEO && s1->bit_rate && |
932 |
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234 | (s1->bit_rate != 0x3FFFF*400)) { |
933 | 99 | avctx->rc_max_rate = s1->bit_rate; | |
934 |
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160 | } else if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO && s1->bit_rate && |
935 |
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25 | (s1->bit_rate != 0x3FFFF*400 || s1->vbv_delay != 0xFFFF)) { |
936 | 25 | avctx->bit_rate = s1->bit_rate; | |
937 | } | ||
938 | 259 | s1->save_progressive_seq = s->progressive_sequence; | |
939 | 259 | s1->save_chroma_format = s->chroma_format; | |
940 | |||
941 | /* low_delay may be forced, in this case we will have B-frames | ||
942 | * that behave like P-frames. */ | ||
943 | 259 | avctx->has_b_frames = !s->low_delay; | |
944 | |||
945 |
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259 | if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) { |
946 | // MPEG-1 fps | ||
947 | 25 | avctx->framerate = ff_mpeg12_frame_rate_tab[s1->frame_rate_index]; | |
948 | 25 | avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; | |
949 | } else { // MPEG-2 | ||
950 | // MPEG-2 fps | ||
951 | 234 | av_reduce(&s->avctx->framerate.num, | |
952 | 234 | &s->avctx->framerate.den, | |
953 | 234 | ff_mpeg12_frame_rate_tab[s1->frame_rate_index].num * s1->frame_rate_ext.num, | |
954 | 234 | ff_mpeg12_frame_rate_tab[s1->frame_rate_index].den * s1->frame_rate_ext.den, | |
955 | 1 << 30); | ||
956 | |||
957 |
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234 | switch (s->chroma_format) { |
958 | 173 | case CHROMA_420: avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; break; | |
959 | 61 | case CHROMA_422: | |
960 | 61 | case CHROMA_444: avctx->chroma_sample_location = AVCHROMA_LOC_TOPLEFT; break; | |
961 | ✗ | default: av_assert0(0); | |
962 | } | ||
963 | } // MPEG-2 | ||
964 | |||
965 | 259 | avctx->pix_fmt = mpeg_get_pixelformat(avctx); | |
966 | |||
967 |
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259 | if ((ret = ff_mpv_common_init(s)) < 0) |
968 | ✗ | return ret; | |
969 |
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259 | if (!s->avctx->lowres) |
970 |
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558 | for (int i = 0; i < s->slice_context_count; i++) |
971 | 299 | ff_mpv_framesize_disable(&s->thread_context[i]->sc); | |
972 | } | ||
973 | 5050 | return 0; | |
974 | } | ||
975 | |||
976 | 5050 | static int mpeg1_decode_picture(AVCodecContext *avctx, const uint8_t *buf, | |
977 | int buf_size) | ||
978 | { | ||
979 | 5050 | Mpeg1Context *s1 = avctx->priv_data; | |
980 | 5050 | MPVContext *const s = &s1->slice.c; | |
981 | 5050 | GetBitContext gb0, *const gb = &gb0; | |
982 | int ref, f_code, vbv_delay, ret; | ||
983 | |||
984 | 5050 | ret = init_get_bits8(gb, buf, buf_size); | |
985 |
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5050 | if (ret < 0) |
986 | ✗ | return ret; | |
987 | |||
988 | 5050 | ref = get_bits(gb, 10); /* temporal ref */ | |
989 | 5050 | s->pict_type = get_bits(gb, 3); | |
990 |
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5050 | if (s->pict_type == 0 || s->pict_type > 3) |
991 | ✗ | return AVERROR_INVALIDDATA; | |
992 | |||
993 | 5050 | vbv_delay = get_bits(gb, 16); | |
994 | 5050 | s1->vbv_delay = vbv_delay; | |
995 |
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5050 | if (s->pict_type == AV_PICTURE_TYPE_P || |
996 |
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2330 | s->pict_type == AV_PICTURE_TYPE_B) { |
997 | 4339 | s->full_pel[0] = get_bits1(gb); | |
998 | 4339 | f_code = get_bits(gb, 3); | |
999 |
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4339 | if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) |
1000 | ✗ | return AVERROR_INVALIDDATA; | |
1001 | 4339 | f_code += !f_code; | |
1002 | 4339 | s->mpeg_f_code[0][0] = f_code; | |
1003 | 4339 | s->mpeg_f_code[0][1] = f_code; | |
1004 | } | ||
1005 |
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5050 | if (s->pict_type == AV_PICTURE_TYPE_B) { |
1006 | 1619 | s->full_pel[1] = get_bits1(gb); | |
1007 | 1619 | f_code = get_bits(gb, 3); | |
1008 |
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1619 | if (f_code == 0 && (avctx->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))) |
1009 | ✗ | return AVERROR_INVALIDDATA; | |
1010 | 1619 | f_code += !f_code; | |
1011 | 1619 | s->mpeg_f_code[1][0] = f_code; | |
1012 | 1619 | s->mpeg_f_code[1][1] = f_code; | |
1013 | } | ||
1014 | |||
1015 |
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5050 | if (avctx->debug & FF_DEBUG_PICT_INFO) |
1016 | ✗ | av_log(avctx, AV_LOG_DEBUG, | |
1017 | "vbv_delay %d, ref %d type:%d\n", vbv_delay, ref, s->pict_type); | ||
1018 | |||
1019 | 5050 | return 0; | |
1020 | } | ||
1021 | |||
1022 | 717 | static void mpeg_decode_sequence_extension(Mpeg1Context *const s1, | |
1023 | GetBitContext *const gb) | ||
1024 | { | ||
1025 | 717 | MPVContext *const s = &s1->slice.c; | |
1026 | int horiz_size_ext, vert_size_ext; | ||
1027 | int bit_rate_ext; | ||
1028 | |||
1029 | 717 | skip_bits(gb, 1); /* profile and level esc*/ | |
1030 | 717 | s->avctx->profile = get_bits(gb, 3); | |
1031 | 717 | s->avctx->level = get_bits(gb, 4); | |
1032 | 717 | s->progressive_sequence = get_bits1(gb); /* progressive_sequence */ | |
1033 | 717 | s->chroma_format = get_bits(gb, 2); /* chroma_format 1=420, 2=422, 3=444 */ | |
1034 | |||
1035 |
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717 | if (!s->chroma_format) { |
1036 | ✗ | s->chroma_format = CHROMA_420; | |
1037 | ✗ | av_log(s->avctx, AV_LOG_WARNING, "Chroma format invalid\n"); | |
1038 | } | ||
1039 | |||
1040 | 717 | horiz_size_ext = get_bits(gb, 2); | |
1041 | 717 | vert_size_ext = get_bits(gb, 2); | |
1042 | 717 | s->width |= (horiz_size_ext << 12); | |
1043 | 717 | s->height |= (vert_size_ext << 12); | |
1044 | 717 | bit_rate_ext = get_bits(gb, 12); /* XXX: handle it */ | |
1045 | 717 | s1->bit_rate += (bit_rate_ext << 18) * 400LL; | |
1046 | 717 | check_marker(s->avctx, gb, "after bit rate extension"); | |
1047 | 717 | s->avctx->rc_buffer_size += get_bits(gb, 8) * 1024 * 16 << 10; | |
1048 | |||
1049 | 717 | s->low_delay = get_bits1(gb); | |
1050 |
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717 | if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY) |
1051 | ✗ | s->low_delay = 1; | |
1052 | |||
1053 | 717 | s1->frame_rate_ext.num = get_bits(gb, 2) + 1; | |
1054 | 717 | s1->frame_rate_ext.den = get_bits(gb, 5) + 1; | |
1055 | |||
1056 | ff_dlog(s->avctx, "sequence extension\n"); | ||
1057 | 717 | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; | |
1058 | |||
1059 |
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717 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
1060 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
1061 | "profile: %d, level: %d ps: %d cf:%d vbv buffer: %d, bitrate:%"PRId64"\n", | ||
1062 | ✗ | s->avctx->profile, s->avctx->level, s->progressive_sequence, s->chroma_format, | |
1063 | ✗ | s->avctx->rc_buffer_size, s1->bit_rate); | |
1064 | 717 | } | |
1065 | |||
1066 | 95 | static void mpeg_decode_sequence_display_extension(Mpeg1Context *const s1, | |
1067 | GetBitContext *const gb) | ||
1068 | { | ||
1069 | 95 | MPVContext *const s = &s1->slice.c; | |
1070 | int color_description, w, h; | ||
1071 | |||
1072 | 95 | skip_bits(gb, 3); /* video format */ | |
1073 | 95 | color_description = get_bits1(gb); | |
1074 |
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95 | if (color_description) { |
1075 | 33 | s->avctx->color_primaries = get_bits(gb, 8); | |
1076 | 33 | s->avctx->color_trc = get_bits(gb, 8); | |
1077 | 33 | s->avctx->colorspace = get_bits(gb, 8); | |
1078 | } | ||
1079 | 95 | w = get_bits(gb, 14); | |
1080 | 95 | skip_bits(gb, 1); // marker | |
1081 | 95 | h = get_bits(gb, 14); | |
1082 | // remaining 3 bits are zero padding | ||
1083 | |||
1084 | 95 | s1->pan_scan.width = 16 * w; | |
1085 | 95 | s1->pan_scan.height = 16 * h; | |
1086 | |||
1087 |
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95 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
1088 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, "sde w:%d, h:%d\n", w, h); | |
1089 | 95 | } | |
1090 | |||
1091 | 27 | static void mpeg_decode_picture_display_extension(Mpeg1Context *const s1, | |
1092 | GetBitContext *const gb) | ||
1093 | { | ||
1094 | 27 | MPVContext *const s = &s1->slice.c; | |
1095 | int i, nofco; | ||
1096 | |||
1097 | 27 | nofco = 1; | |
1098 |
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27 | if (s->progressive_sequence) { |
1099 | ✗ | if (s->repeat_first_field) { | |
1100 | ✗ | nofco++; | |
1101 | ✗ | if (s->top_field_first) | |
1102 | ✗ | nofco++; | |
1103 | } | ||
1104 | } else { | ||
1105 |
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27 | if (s->picture_structure == PICT_FRAME) { |
1106 | 9 | nofco++; | |
1107 |
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9 | if (s->repeat_first_field) |
1108 | 6 | nofco++; | |
1109 | } | ||
1110 | } | ||
1111 |
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69 | for (i = 0; i < nofco; i++) { |
1112 | 42 | s1->pan_scan.position[i][0] = get_sbits(gb, 16); | |
1113 | 42 | skip_bits(gb, 1); // marker | |
1114 | 42 | s1->pan_scan.position[i][1] = get_sbits(gb, 16); | |
1115 | 42 | skip_bits(gb, 1); // marker | |
1116 | } | ||
1117 | |||
1118 |
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27 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
1119 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
1120 | "pde (%"PRId16",%"PRId16") (%"PRId16",%"PRId16") (%"PRId16",%"PRId16")\n", | ||
1121 | ✗ | s1->pan_scan.position[0][0], s1->pan_scan.position[0][1], | |
1122 | ✗ | s1->pan_scan.position[1][0], s1->pan_scan.position[1][1], | |
1123 | ✗ | s1->pan_scan.position[2][0], s1->pan_scan.position[2][1]); | |
1124 | 27 | } | |
1125 | |||
1126 | 223 | static int load_matrix(MPVContext *const s, GetBitContext *const gb, | |
1127 | uint16_t matrix0[64], uint16_t matrix1[64], int intra) | ||
1128 | { | ||
1129 | int i; | ||
1130 | |||
1131 |
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14495 | for (i = 0; i < 64; i++) { |
1132 | 14272 | int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; | |
1133 | 14272 | int v = get_bits(gb, 8); | |
1134 |
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14272 | if (v == 0) { |
1135 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "matrix damaged\n"); | |
1136 | ✗ | return AVERROR_INVALIDDATA; | |
1137 | } | ||
1138 |
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14272 | if (intra && i == 0 && v != 8) { |
1139 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, "intra matrix specifies invalid DC quantizer %d, ignoring\n", v); | |
1140 | ✗ | v = 8; // needed by pink.mpg / issue1046 | |
1141 | } | ||
1142 | 14272 | matrix0[j] = v; | |
1143 |
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14272 | if (matrix1) |
1144 | 13632 | matrix1[j] = v; | |
1145 | } | ||
1146 | 223 | return 0; | |
1147 | } | ||
1148 | |||
1149 | 971 | static void mpeg_decode_quant_matrix_extension(MPVContext *const s, | |
1150 | GetBitContext *const gb) | ||
1151 | { | ||
1152 | ff_dlog(s->avctx, "matrix extension\n"); | ||
1153 | |||
1154 |
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|
971 | if (get_bits1(gb)) |
1155 | 34 | load_matrix(s, gb, s->chroma_intra_matrix, s->intra_matrix, 1); | |
1156 |
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971 | if (get_bits1(gb)) |
1157 | 73 | load_matrix(s, gb, s->chroma_inter_matrix, s->inter_matrix, 0); | |
1158 |
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971 | if (get_bits1(gb)) |
1159 | 9 | load_matrix(s, gb, s->chroma_intra_matrix, NULL, 1); | |
1160 |
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971 | if (get_bits1(gb)) |
1161 | 1 | load_matrix(s, gb, s->chroma_inter_matrix, NULL, 0); | |
1162 | 971 | } | |
1163 | |||
1164 | 4556 | static int mpeg_decode_picture_coding_extension(Mpeg1Context *const s1, | |
1165 | GetBitContext *const gb) | ||
1166 | { | ||
1167 | 4556 | MPVContext *const s = &s1->slice.c; | |
1168 | |||
1169 | 4556 | s->full_pel[0] = s->full_pel[1] = 0; | |
1170 | 4556 | s->mpeg_f_code[0][0] = get_bits(gb, 4); | |
1171 | 4556 | s->mpeg_f_code[0][1] = get_bits(gb, 4); | |
1172 | 4556 | s->mpeg_f_code[1][0] = get_bits(gb, 4); | |
1173 | 4556 | s->mpeg_f_code[1][1] = get_bits(gb, 4); | |
1174 | 4556 | s->mpeg_f_code[0][0] += !s->mpeg_f_code[0][0]; | |
1175 | 4556 | s->mpeg_f_code[0][1] += !s->mpeg_f_code[0][1]; | |
1176 | 4556 | s->mpeg_f_code[1][0] += !s->mpeg_f_code[1][0]; | |
1177 | 4556 | s->mpeg_f_code[1][1] += !s->mpeg_f_code[1][1]; | |
1178 |
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4556 | if (!s->pict_type && s->context_initialized) { |
1179 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "Missing picture start code\n"); | |
1180 | ✗ | if (s->avctx->err_recognition & AV_EF_EXPLODE) | |
1181 | ✗ | return AVERROR_INVALIDDATA; | |
1182 | ✗ | av_log(s->avctx, AV_LOG_WARNING, "Guessing pict_type from mpeg_f_code\n"); | |
1183 | ✗ | if (s->mpeg_f_code[1][0] == 15 && s->mpeg_f_code[1][1] == 15) { | |
1184 | ✗ | if (s->mpeg_f_code[0][0] == 15 && s->mpeg_f_code[0][1] == 15) | |
1185 | ✗ | s->pict_type = AV_PICTURE_TYPE_I; | |
1186 | else | ||
1187 | ✗ | s->pict_type = AV_PICTURE_TYPE_P; | |
1188 | } else | ||
1189 | ✗ | s->pict_type = AV_PICTURE_TYPE_B; | |
1190 | } | ||
1191 | |||
1192 | 4556 | s->intra_dc_precision = get_bits(gb, 2); | |
1193 | 4556 | s->picture_structure = get_bits(gb, 2); | |
1194 | 4556 | s->top_field_first = get_bits1(gb); | |
1195 | 4556 | s->frame_pred_frame_dct = get_bits1(gb); | |
1196 | 4556 | s->concealment_motion_vectors = get_bits1(gb); | |
1197 | 4556 | s->q_scale_type = get_bits1(gb); | |
1198 | 4556 | s->intra_vlc_format = get_bits1(gb); | |
1199 | 4556 | s->alternate_scan = get_bits1(gb); | |
1200 | 4556 | s->repeat_first_field = get_bits1(gb); | |
1201 | 4556 | s->chroma_420_type = get_bits1(gb); | |
1202 | 4556 | s->progressive_frame = get_bits1(gb); | |
1203 | |||
1204 | // We only initialize intra_scantable.permutated, as this is all we use. | ||
1205 | 4556 | ff_permute_scantable(s->intra_scantable.permutated, | |
1206 | 4556 | s->alternate_scan ? ff_alternate_vertical_scan : ff_zigzag_direct, | |
1207 |
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4556 | s->idsp.idct_permutation); |
1208 | |||
1209 | /* composite display not parsed */ | ||
1210 | ff_dlog(s->avctx, "intra_dc_precision=%d\n", s->intra_dc_precision); | ||
1211 | ff_dlog(s->avctx, "picture_structure=%d\n", s->picture_structure); | ||
1212 | ff_dlog(s->avctx, "top field first=%d\n", s->top_field_first); | ||
1213 | ff_dlog(s->avctx, "repeat first field=%d\n", s->repeat_first_field); | ||
1214 | ff_dlog(s->avctx, "conceal=%d\n", s->concealment_motion_vectors); | ||
1215 | ff_dlog(s->avctx, "intra_vlc_format=%d\n", s->intra_vlc_format); | ||
1216 | ff_dlog(s->avctx, "alternate_scan=%d\n", s->alternate_scan); | ||
1217 | ff_dlog(s->avctx, "frame_pred_frame_dct=%d\n", s->frame_pred_frame_dct); | ||
1218 | ff_dlog(s->avctx, "progressive_frame=%d\n", s->progressive_frame); | ||
1219 | |||
1220 | 4556 | return 0; | |
1221 | } | ||
1222 | |||
1223 | 4605 | static int mpeg_field_start(Mpeg1Context *s1, const uint8_t *buf, int buf_size) | |
1224 | { | ||
1225 | 4605 | MPVContext *const s = &s1->slice.c; | |
1226 | 4605 | AVCodecContext *avctx = s->avctx; | |
1227 | 4605 | int second_field = 0; | |
1228 | int ret; | ||
1229 | |||
1230 |
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4605 | if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) { |
1231 |
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4605 | if (s->mb_width * s->mb_height * 11LL / (33 * 2 * 8) > buf_size) |
1232 | ✗ | return AVERROR_INVALIDDATA; | |
1233 | } | ||
1234 | |||
1235 | /* start frame decoding */ | ||
1236 |
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8503 | if (s->first_field || s->picture_structure == PICT_FRAME) { |
1237 | AVFrameSideData *pan_scan; | ||
1238 | |||
1239 |
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3898 | if ((ret = ff_mpv_frame_start(s, avctx)) < 0) |
1240 | ✗ | return ret; | |
1241 | |||
1242 |
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3898 | if (s->picture_structure != PICT_FRAME) { |
1243 | 707 | s->cur_pic.ptr->f->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST * | |
1244 |
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707 | (s->picture_structure == PICT_TOP_FIELD); |
1245 | |||
1246 |
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2828 | for (int i = 0; i < 3; i++) { |
1247 |
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2121 | if (s->picture_structure == PICT_BOTTOM_FIELD) { |
1248 |
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2115 | s->cur_pic.data[i] = FF_PTR_ADD(s->cur_pic.data[i], |
1249 | s->cur_pic.linesize[i]); | ||
1250 | } | ||
1251 | 2121 | s->cur_pic.linesize[i] *= 2; | |
1252 | } | ||
1253 | } | ||
1254 | |||
1255 | 3898 | ff_mpeg_er_frame_start(s); | |
1256 | |||
1257 | /* first check if we must repeat the frame */ | ||
1258 | 3898 | s->cur_pic.ptr->f->repeat_pict = 0; | |
1259 |
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3898 | if (s->repeat_first_field) { |
1260 |
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6 | if (s->progressive_sequence) { |
1261 | ✗ | if (s->top_field_first) | |
1262 | ✗ | s->cur_pic.ptr->f->repeat_pict = 4; | |
1263 | else | ||
1264 | ✗ | s->cur_pic.ptr->f->repeat_pict = 2; | |
1265 |
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6 | } else if (s->progressive_frame) { |
1266 | 6 | s->cur_pic.ptr->f->repeat_pict = 1; | |
1267 | } | ||
1268 | } | ||
1269 | |||
1270 | 3898 | ret = ff_frame_new_side_data(s->avctx, s->cur_pic.ptr->f, | |
1271 | AV_FRAME_DATA_PANSCAN, sizeof(s1->pan_scan), | ||
1272 | &pan_scan); | ||
1273 |
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3898 | if (ret < 0) |
1274 | ✗ | return ret; | |
1275 |
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3898 | if (pan_scan) |
1276 | 3898 | memcpy(pan_scan->data, &s1->pan_scan, sizeof(s1->pan_scan)); | |
1277 | |||
1278 |
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3898 | if (s1->a53_buf_ref) { |
1279 | 742 | ret = ff_frame_new_side_data_from_buf( | |
1280 | 742 | s->avctx, s->cur_pic.ptr->f, AV_FRAME_DATA_A53_CC, | |
1281 | &s1->a53_buf_ref); | ||
1282 |
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742 | if (ret < 0) |
1283 | ✗ | return ret; | |
1284 | } | ||
1285 | |||
1286 |
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3898 | if (s1->has_stereo3d) { |
1287 | ✗ | AVStereo3D *stereo = av_stereo3d_create_side_data(s->cur_pic.ptr->f); | |
1288 | ✗ | if (!stereo) | |
1289 | ✗ | return AVERROR(ENOMEM); | |
1290 | |||
1291 | ✗ | stereo->type = s1->stereo3d_type; | |
1292 | ✗ | s1->has_stereo3d = 0; | |
1293 | } | ||
1294 | |||
1295 |
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3898 | if (s1->has_afd) { |
1296 | AVFrameSideData *sd; | ||
1297 | 202 | ret = ff_frame_new_side_data(s->avctx, s->cur_pic.ptr->f, | |
1298 | AV_FRAME_DATA_AFD, 1, &sd); | ||
1299 |
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202 | if (ret < 0) |
1300 | ✗ | return ret; | |
1301 |
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202 | if (sd) |
1302 | 202 | *sd->data = s1->afd; | |
1303 | 202 | s1->has_afd = 0; | |
1304 | } | ||
1305 | } else { // second field | ||
1306 | 707 | second_field = 1; | |
1307 |
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707 | if (!s->cur_pic.ptr) { |
1308 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "first field missing\n"); | |
1309 | ✗ | return AVERROR_INVALIDDATA; | |
1310 | } | ||
1311 | |||
1312 |
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707 | if (s->avctx->hwaccel) { |
1313 | ✗ | if ((ret = FF_HW_SIMPLE_CALL(s->avctx, end_frame)) < 0) { | |
1314 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
1315 | "hardware accelerator failed to decode first field\n"); | ||
1316 | ✗ | return ret; | |
1317 | } | ||
1318 | } | ||
1319 | 707 | ret = ff_mpv_alloc_dummy_frames(s); | |
1320 |
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707 | if (ret < 0) |
1321 | ✗ | return ret; | |
1322 | |||
1323 |
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2828 | for (int i = 0; i < 3; i++) { |
1324 | 2121 | s->cur_pic.data[i] = s->cur_pic.ptr->f->data[i]; | |
1325 |
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2121 | if (s->picture_structure == PICT_BOTTOM_FIELD) |
1326 | 6 | s->cur_pic.data[i] += | |
1327 | 6 | s->cur_pic.ptr->f->linesize[i]; | |
1328 | } | ||
1329 | } | ||
1330 | |||
1331 |
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4605 | if (avctx->hwaccel) { |
1332 | ✗ | if ((ret = FF_HW_CALL(avctx, start_frame, NULL, buf, buf_size)) < 0) | |
1333 | ✗ | return ret; | |
1334 |
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4605 | } else if (s->codec_tag == MKTAG('V', 'C', 'R', '2')) { |
1335 | // Exchange UV | ||
1336 | 157 | FFSWAP(uint8_t*, s->cur_pic.data[1], s->cur_pic.data[2]); | |
1337 | 157 | FFSWAP(ptrdiff_t, s->cur_pic.linesize[1], s->cur_pic.linesize[2]); | |
1338 |
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157 | if (!second_field) { |
1339 | 157 | FFSWAP(uint8_t*, s->next_pic.data[1], s->next_pic.data[2]); | |
1340 | 157 | FFSWAP(ptrdiff_t, s->next_pic.linesize[1], s->next_pic.linesize[2]); | |
1341 | 157 | FFSWAP(uint8_t*, s->last_pic.data[1], s->last_pic.data[2]); | |
1342 | 157 | FFSWAP(ptrdiff_t, s->last_pic.linesize[1], s->last_pic.linesize[2]); | |
1343 | } | ||
1344 | } | ||
1345 | |||
1346 | 4605 | return 0; | |
1347 | } | ||
1348 | |||
1349 | #define DECODE_SLICE_ERROR -1 | ||
1350 | #define DECODE_SLICE_OK 0 | ||
1351 | |||
1352 | /** | ||
1353 | * Decode a slice. | ||
1354 | * Mpeg12SliceContext.c.mb_y must be set to the MB row from the startcode. | ||
1355 | * @return DECODE_SLICE_ERROR if the slice is damaged, | ||
1356 | * DECODE_SLICE_OK if this slice is OK | ||
1357 | */ | ||
1358 | 127071 | static int mpeg_decode_slice(Mpeg12SliceContext *const s, int mb_y, | |
1359 | const uint8_t **buf, int buf_size) | ||
1360 | { | ||
1361 | 127071 | AVCodecContext *avctx = s->c.avctx; | |
1362 | 127071 | const int lowres = s->c.avctx->lowres; | |
1363 | 127071 | const int field_pic = s->c.picture_structure != PICT_FRAME; | |
1364 | int ret; | ||
1365 | |||
1366 | 127071 | s->c.resync_mb_x = | |
1367 | 127071 | s->c.resync_mb_y = -1; | |
1368 | |||
1369 |
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127071 | av_assert0(mb_y < s->c.mb_height); |
1370 | |||
1371 | 127071 | ret = init_get_bits8(&s->gb, *buf, buf_size); | |
1372 |
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127071 | if (ret < 0) |
1373 | ✗ | return ret; | |
1374 | |||
1375 |
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127071 | if (s->c.codec_id != AV_CODEC_ID_MPEG1VIDEO && s->c.mb_height > 2800/16) |
1376 | ✗ | skip_bits(&s->gb, 3); | |
1377 | |||
1378 | 127071 | ff_mpeg1_clean_buffers(&s->c); | |
1379 | 127071 | s->c.interlaced_dct = 0; | |
1380 | |||
1381 | 127071 | s->c.qscale = mpeg_get_qscale(&s->gb, s->c.q_scale_type); | |
1382 | |||
1383 |
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127071 | if (s->c.qscale == 0) { |
1384 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "qscale == 0\n"); | |
1385 | ✗ | return AVERROR_INVALIDDATA; | |
1386 | } | ||
1387 | |||
1388 | /* extra slice info */ | ||
1389 |
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127071 | if (skip_1stop_8data_bits(&s->gb) < 0) |
1390 | ✗ | return AVERROR_INVALIDDATA; | |
1391 | |||
1392 | 127071 | s->c.mb_x = 0; | |
1393 | |||
1394 |
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127071 | if (mb_y == 0 && s->c.codec_tag == AV_RL32("SLIF")) { |
1395 | ✗ | skip_bits1(&s->gb); | |
1396 | } else { | ||
1397 |
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|
267140 | while (get_bits_left(&s->gb) > 0) { |
1398 | 140069 | int code = get_vlc2(&s->gb, ff_mbincr_vlc, | |
1399 | MBINCR_VLC_BITS, 2); | ||
1400 |
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|
140069 | if (code < 0) { |
1401 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "first mb_incr damaged\n"); | |
1402 | ✗ | return AVERROR_INVALIDDATA; | |
1403 | } | ||
1404 |
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|
140069 | if (code >= 33) { |
1405 |
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|
12998 | if (code == 33) |
1406 | 12998 | s->c.mb_x += 33; | |
1407 | /* otherwise, stuffing, nothing to do */ | ||
1408 | } else { | ||
1409 | 127071 | s->c.mb_x += code; | |
1410 | 127071 | break; | |
1411 | } | ||
1412 | } | ||
1413 | } | ||
1414 | |||
1415 |
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|
127071 | if (s->c.mb_x >= (unsigned) s->c.mb_width) { |
1416 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "initial skip overflow\n"); | |
1417 | ✗ | return AVERROR_INVALIDDATA; | |
1418 | } | ||
1419 | |||
1420 |
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|
127071 | if (avctx->hwaccel) { |
1421 | ✗ | const uint8_t *buf_end, *buf_start = *buf - 4; /* include start_code */ | |
1422 | ✗ | int start_code = -1; | |
1423 | ✗ | buf_end = avpriv_find_start_code(buf_start + 2, *buf + buf_size, &start_code); | |
1424 | ✗ | if (buf_end < *buf + buf_size) | |
1425 | ✗ | buf_end -= 4; | |
1426 | ✗ | s->c.mb_y = mb_y; | |
1427 | ✗ | if (FF_HW_CALL(avctx, decode_slice, buf_start, buf_end - buf_start) < 0) | |
1428 | ✗ | return DECODE_SLICE_ERROR; | |
1429 | ✗ | *buf = buf_end; | |
1430 | ✗ | return DECODE_SLICE_OK; | |
1431 | } | ||
1432 | |||
1433 | 127071 | s->c.resync_mb_x = s->c.mb_x; | |
1434 | 127071 | s->c.resync_mb_y = s->c.mb_y = mb_y; | |
1435 | 127071 | ff_init_block_index(&s->c); | |
1436 | |||
1437 |
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✓ Branch 7 taken 705 times.
|
127071 | if (s->c.mb_y == 0 && s->c.mb_x == 0 && (s->c.first_field || s->c.picture_structure == PICT_FRAME)) { |
1438 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 3193 times.
|
3193 | if (s->c.avctx->debug & FF_DEBUG_PICT_INFO) { |
1439 | ✗ | av_log(s->c.avctx, AV_LOG_DEBUG, | |
1440 | "qp:%d fc:%2d%2d%2d%2d %c %s %s %s %s dc:%d pstruct:%d fdct:%d cmv:%d qtype:%d ivlc:%d rff:%d %s\n", | ||
1441 | s->c.qscale, | ||
1442 | s->c.mpeg_f_code[0][0], s->c.mpeg_f_code[0][1], | ||
1443 | s->c.mpeg_f_code[1][0], s->c.mpeg_f_code[1][1], | ||
1444 | ✗ | s->c.pict_type == AV_PICTURE_TYPE_I ? 'I' : | |
1445 | ✗ | (s->c.pict_type == AV_PICTURE_TYPE_P ? 'P' : | |
1446 | ✗ | (s->c.pict_type == AV_PICTURE_TYPE_B ? 'B' : 'S')), | |
1447 | ✗ | s->c.progressive_sequence ? "ps" : "", | |
1448 | ✗ | s->c.progressive_frame ? "pf" : "", | |
1449 | ✗ | s->c.alternate_scan ? "alt" : "", | |
1450 | ✗ | s->c.top_field_first ? "top" : "", | |
1451 | s->c.intra_dc_precision, s->c.picture_structure, | ||
1452 | s->c.frame_pred_frame_dct, s->c.concealment_motion_vectors, | ||
1453 | s->c.q_scale_type, s->c.intra_vlc_format, | ||
1454 | ✗ | s->c.repeat_first_field, s->c.chroma_420_type ? "420" : ""); | |
1455 | } | ||
1456 | } | ||
1457 | |||
1458 | 127071 | for (int mb_skip_run = 0;;) { | |
1459 | 2599678 | ret = mpeg_decode_mb(s, &mb_skip_run); | |
1460 |
2/2✓ Branch 0 taken 10 times.
✓ Branch 1 taken 2599668 times.
|
2599678 | if (ret < 0) |
1461 | 10 | return ret; | |
1462 | |||
1463 | // Note motion_val is normally NULL unless we want to extract the MVs. | ||
1464 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2599668 times.
|
2599668 | if (s->c.cur_pic.motion_val[0]) { |
1465 | ✗ | const int wrap = s->c.b8_stride; | |
1466 | ✗ | int xy = s->c.mb_x * 2 + s->c.mb_y * 2 * wrap; | |
1467 | ✗ | int b8_xy = 4 * (s->c.mb_x + s->c.mb_y * s->c.mb_stride); | |
1468 | int motion_x, motion_y, dir, i; | ||
1469 | |||
1470 | ✗ | for (i = 0; i < 2; i++) { | |
1471 | ✗ | for (dir = 0; dir < 2; dir++) { | |
1472 | ✗ | if (s->c.mb_intra || | |
1473 | ✗ | (dir == 1 && s->c.pict_type != AV_PICTURE_TYPE_B)) { | |
1474 | ✗ | motion_x = motion_y = 0; | |
1475 | ✗ | } else if (s->c.mv_type == MV_TYPE_16X16 || | |
1476 | ✗ | (s->c.mv_type == MV_TYPE_FIELD && field_pic)) { | |
1477 | ✗ | motion_x = s->c.mv[dir][0][0]; | |
1478 | ✗ | motion_y = s->c.mv[dir][0][1]; | |
1479 | } else { /* if ((s->c.mv_type == MV_TYPE_FIELD) || (s->c.mv_type == MV_TYPE_16X8)) */ | ||
1480 | ✗ | motion_x = s->c.mv[dir][i][0]; | |
1481 | ✗ | motion_y = s->c.mv[dir][i][1]; | |
1482 | } | ||
1483 | |||
1484 | ✗ | s->c.cur_pic.motion_val[dir][xy][0] = motion_x; | |
1485 | ✗ | s->c.cur_pic.motion_val[dir][xy][1] = motion_y; | |
1486 | ✗ | s->c.cur_pic.motion_val[dir][xy + 1][0] = motion_x; | |
1487 | ✗ | s->c.cur_pic.motion_val[dir][xy + 1][1] = motion_y; | |
1488 | ✗ | s->c.cur_pic.ref_index [dir][b8_xy] = | |
1489 | ✗ | s->c.cur_pic.ref_index [dir][b8_xy + 1] = s->c.field_select[dir][i]; | |
1490 | av_assert2(s->c.field_select[dir][i] == 0 || | ||
1491 | s->c.field_select[dir][i] == 1); | ||
1492 | } | ||
1493 | ✗ | xy += wrap; | |
1494 | ✗ | b8_xy += 2; | |
1495 | } | ||
1496 | } | ||
1497 | |||
1498 | 2599668 | s->c.dest[0] += 16 >> lowres; | |
1499 | 2599668 | s->c.dest[1] +=(16 >> lowres) >> s->c.chroma_x_shift; | |
1500 | 2599668 | s->c.dest[2] +=(16 >> lowres) >> s->c.chroma_x_shift; | |
1501 | |||
1502 | 2599668 | ff_mpv_reconstruct_mb(&s->c, s->block); | |
1503 | |||
1504 |
2/2✓ Branch 0 taken 79160 times.
✓ Branch 1 taken 2520508 times.
|
2599668 | if (++s->c.mb_x >= s->c.mb_width) { |
1505 | 79160 | const int mb_size = 16 >> s->c.avctx->lowres; | |
1506 | int left; | ||
1507 | |||
1508 | 79160 | ff_mpeg_draw_horiz_band(&s->c, mb_size * (s->c.mb_y >> field_pic), mb_size); | |
1509 | |||
1510 | 79160 | s->c.mb_x = 0; | |
1511 | 79160 | s->c.mb_y += 1 << field_pic; | |
1512 | |||
1513 |
2/2✓ Branch 0 taken 4595 times.
✓ Branch 1 taken 74565 times.
|
79160 | if (s->c.mb_y >= s->c.mb_height) { |
1514 | 4595 | int left = get_bits_left(&s->gb); | |
1515 | 9451 | int is_d10 = s->c.chroma_format == CHROMA_422 && | |
1516 |
2/2✓ Branch 0 taken 49 times.
✓ Branch 1 taken 212 times.
|
261 | s->c.pict_type == AV_PICTURE_TYPE_I && |
1517 |
2/4✓ Branch 0 taken 49 times.
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|
49 | avctx->profile == 0 && avctx->level == 5 && |
1518 |
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✓ Branch 1 taken 24 times.
|
49 | s->c.intra_dc_precision == 2 && |
1519 |
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|
4881 | s->c.q_scale_type == 1 && s->c.alternate_scan == 0 && |
1520 |
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✗ Branch 1 not taken.
|
25 | s->c.progressive_frame == 0 |
1521 | /* vbv_delay == 0xBBB || 0xE10 */; | ||
1522 | |||
1523 |
4/4✓ Branch 0 taken 1461 times.
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✓ Branch 2 taken 1436 times.
✓ Branch 3 taken 25 times.
|
4595 | if (left >= 32 && !is_d10) { |
1524 | 1436 | GetBitContext gb = s->gb; | |
1525 | 1436 | align_get_bits(&gb); | |
1526 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 1436 times.
|
1436 | if (show_bits(&gb, 24) == 0x060E2B) { |
1527 | ✗ | av_log(avctx, AV_LOG_DEBUG, "Invalid MXF data found in video stream\n"); | |
1528 | ✗ | is_d10 = 1; | |
1529 | } | ||
1530 |
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|
1436 | if (left > 32 && show_bits_long(&gb, 32) == 0x201) { |
1531 | ✗ | av_log(avctx, AV_LOG_DEBUG, "skipping m704 alpha (unsupported)\n"); | |
1532 | ✗ | goto eos; | |
1533 | } | ||
1534 | } | ||
1535 | |||
1536 |
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|
4595 | if (left < 0 || |
1537 |
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|
4293 | (left && show_bits(&s->gb, FFMIN(left, 23)) && !is_d10) || |
1538 |
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|
4595 | ((avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_AGGRESSIVE)) && left > 8)) { |
1539 | ✗ | av_log(avctx, AV_LOG_ERROR, "end mismatch left=%d %0X at %d %d\n", | |
1540 | ✗ | left, left>0 ? show_bits(&s->gb, FFMIN(left, 23)) : 0, s->c.mb_x, s->c.mb_y); | |
1541 | ✗ | return AVERROR_INVALIDDATA; | |
1542 | } else | ||
1543 | 4595 | goto eos; | |
1544 | } | ||
1545 | // There are some files out there which are missing the last slice | ||
1546 | // in cases where the slice is completely outside the visible | ||
1547 | // area, we detect this here instead of running into the end expecting | ||
1548 | // more data | ||
1549 | 74565 | left = get_bits_left(&s->gb); | |
1550 |
2/2✓ Branch 0 taken 250 times.
✓ Branch 1 taken 74315 times.
|
74565 | if (s->c.mb_y >= ((s->c.height + 15) >> 4) && |
1551 |
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✗ Branch 1 not taken.
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✓ Branch 3 taken 250 times.
|
250 | !s->c.progressive_sequence && |
1552 | ✗ | left <= 25 && | |
1553 | ✗ | left >= 0 && | |
1554 | ✗ | mb_skip_run == -1 && | |
1555 | ✗ | (!left || show_bits(&s->gb, left) == 0)) | |
1556 | ✗ | goto eos; | |
1557 | |||
1558 | 74565 | ff_init_block_index(&s->c); | |
1559 | } | ||
1560 | |||
1561 | /* skip mb handling */ | ||
1562 |
2/2✓ Branch 0 taken 2429584 times.
✓ Branch 1 taken 165489 times.
|
2595073 | if (mb_skip_run == -1) { |
1563 | /* read increment again */ | ||
1564 | 2429584 | mb_skip_run = 0; | |
1565 | 1230 | for (;;) { | |
1566 | 2430814 | int code = get_vlc2(&s->gb, ff_mbincr_vlc, | |
1567 | MBINCR_VLC_BITS, 2); | ||
1568 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 2430814 times.
|
2430814 | if (code < 0) { |
1569 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "mb incr damaged\n"); | |
1570 | ✗ | return AVERROR_INVALIDDATA; | |
1571 | } | ||
1572 |
2/2✓ Branch 0 taken 123696 times.
✓ Branch 1 taken 2307118 times.
|
2430814 | if (code >= 33) { |
1573 |
2/2✓ Branch 0 taken 1230 times.
✓ Branch 1 taken 122466 times.
|
123696 | if (code == 33) { |
1574 | 1230 | mb_skip_run += 33; | |
1575 |
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|
122466 | } else if (code == 35) { |
1576 |
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|
122466 | if (mb_skip_run != 0 || show_bits(&s->gb, 15) != 0) { |
1577 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "slice mismatch\n"); | |
1578 | ✗ | return AVERROR_INVALIDDATA; | |
1579 | } | ||
1580 | 122466 | goto eos; /* end of slice */ | |
1581 | } | ||
1582 | /* otherwise, stuffing, nothing to do */ | ||
1583 | } else { | ||
1584 | 2307118 | mb_skip_run += code; | |
1585 | 2307118 | break; | |
1586 | } | ||
1587 | } | ||
1588 |
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✓ Branch 1 taken 2245144 times.
|
2307118 | if (mb_skip_run) { |
1589 | int i; | ||
1590 |
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✓ Branch 1 taken 61974 times.
|
61974 | if (s->c.pict_type == AV_PICTURE_TYPE_I) { |
1591 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, | |
1592 | "skipped MB in I-frame at %d %d\n", s->c.mb_x, s->c.mb_y); | ||
1593 | ✗ | return AVERROR_INVALIDDATA; | |
1594 | } | ||
1595 | |||
1596 | /* skip mb */ | ||
1597 | 61974 | s->c.mb_intra = 0; | |
1598 |
2/2✓ Branch 0 taken 743688 times.
✓ Branch 1 taken 61974 times.
|
805662 | for (i = 0; i < 12; i++) |
1599 | 743688 | s->c.block_last_index[i] = -1; | |
1600 | 61974 | s->c.last_dc[0] = s->c.last_dc[1] = s->c.last_dc[2] = 128 << s->c.intra_dc_precision; | |
1601 |
2/2✓ Branch 0 taken 42299 times.
✓ Branch 1 taken 19675 times.
|
61974 | if (s->c.picture_structure == PICT_FRAME) |
1602 | 42299 | s->c.mv_type = MV_TYPE_16X16; | |
1603 | else | ||
1604 | 19675 | s->c.mv_type = MV_TYPE_FIELD; | |
1605 |
2/2✓ Branch 0 taken 23719 times.
✓ Branch 1 taken 38255 times.
|
61974 | if (s->c.pict_type == AV_PICTURE_TYPE_P) { |
1606 | /* if P type, zero motion vector is implied */ | ||
1607 | 23719 | s->c.mv_dir = MV_DIR_FORWARD; | |
1608 | 23719 | s->c.mv[0][0][0] = s->c.mv[0][0][1] = 0; | |
1609 | 23719 | s->c.last_mv[0][0][0] = s->c.last_mv[0][0][1] = 0; | |
1610 | 23719 | s->c.last_mv[0][1][0] = s->c.last_mv[0][1][1] = 0; | |
1611 | 23719 | s->c.field_select[0][0] = (s->c.picture_structure - 1) & 1; | |
1612 | } else { | ||
1613 | /* if B type, reuse previous vectors and directions */ | ||
1614 | 38255 | s->c.mv[0][0][0] = s->c.last_mv[0][0][0]; | |
1615 | 38255 | s->c.mv[0][0][1] = s->c.last_mv[0][0][1]; | |
1616 | 38255 | s->c.mv[1][0][0] = s->c.last_mv[1][0][0]; | |
1617 | 38255 | s->c.mv[1][0][1] = s->c.last_mv[1][0][1]; | |
1618 | 38255 | s->c.field_select[0][0] = (s->c.picture_structure - 1) & 1; | |
1619 | 38255 | s->c.field_select[1][0] = (s->c.picture_structure - 1) & 1; | |
1620 | } | ||
1621 | } | ||
1622 | } | ||
1623 | } | ||
1624 | 127061 | eos: // end of slice | |
1625 |
1/2✗ Branch 1 not taken.
✓ Branch 2 taken 127061 times.
|
127061 | if (get_bits_left(&s->gb) < 0) { |
1626 | ✗ | av_log(s->c.avctx, AV_LOG_ERROR, "overread %d\n", -get_bits_left(&s->gb)); | |
1627 | ✗ | return AVERROR_INVALIDDATA; | |
1628 | } | ||
1629 | 127061 | *buf += (get_bits_count(&s->gb) - 1) / 8; | |
1630 | ff_dlog(s->c.avctx, "Slice start:%d %d end:%d %d\n", s->c.resync_mb_x, s->c.resync_mb_y, s->c.mb_x, s->c.mb_y); | ||
1631 | 127061 | return 0; | |
1632 | } | ||
1633 | |||
1634 | 6678 | static int slice_decode_thread(AVCodecContext *c, void *arg) | |
1635 | { | ||
1636 | 6678 | Mpeg12SliceContext *const s = *(void **) arg; | |
1637 | 6678 | const uint8_t *buf = s->gb.buffer; | |
1638 | 6678 | const uint8_t *end = buf + get_bits_bytesize(&s->gb, 0); | |
1639 | 6678 | int mb_y = s->c.start_mb_y; | |
1640 | 6678 | const int field_pic = s->c.picture_structure != PICT_FRAME; | |
1641 | |||
1642 | 6678 | s->c.er.error_count = (3 * (s->c.end_mb_y - s->c.start_mb_y) * s->c.mb_width) >> field_pic; | |
1643 | |||
1644 | 15582 | for (;;) { | |
1645 | uint32_t start_code; | ||
1646 | int ret; | ||
1647 | |||
1648 | 22260 | ret = mpeg_decode_slice(s, mb_y, &buf, end - buf); | |
1649 | 22260 | emms_c(); | |
1650 | ff_dlog(c, "ret:%d resync:%d/%d mb:%d/%d ts:%d/%d ec:%d\n", | ||
1651 | ret, s->c.resync_mb_x, s->c.resync_mb_y, s->c.mb_x, s->c.mb_y, | ||
1652 | s->c.start_mb_y, s->c.end_mb_y, s->c.er.error_count); | ||
1653 |
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✓ Branch 1 taken 22260 times.
|
22260 | if (ret < 0) { |
1654 | ✗ | if (c->err_recognition & AV_EF_EXPLODE) | |
1655 | 6678 | return ret; | |
1656 | ✗ | if (s->c.resync_mb_x >= 0 && s->c.resync_mb_y >= 0) | |
1657 | ✗ | ff_er_add_slice(&s->c.er, s->c.resync_mb_x, s->c.resync_mb_y, | |
1658 | s->c.mb_x, s->c.mb_y, | ||
1659 | ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); | ||
1660 | } else { | ||
1661 | 22260 | ff_er_add_slice(&s->c.er, s->c.resync_mb_x, s->c.resync_mb_y, | |
1662 | 22260 | s->c.mb_x - 1, s->c.mb_y, | |
1663 | ER_AC_END | ER_DC_END | ER_MV_END); | ||
1664 | } | ||
1665 | |||
1666 |
2/2✓ Branch 0 taken 6678 times.
✓ Branch 1 taken 15582 times.
|
22260 | if (s->c.mb_y == s->c.end_mb_y) |
1667 | 6678 | return 0; | |
1668 | |||
1669 | 15582 | start_code = -1; | |
1670 | 15582 | buf = avpriv_find_start_code(buf, end, &start_code); | |
1671 |
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✗ Branch 1 not taken.
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|
15582 | if (start_code < SLICE_MIN_START_CODE || start_code > SLICE_MAX_START_CODE) |
1672 | ✗ | return AVERROR_INVALIDDATA; | |
1673 | 15582 | mb_y = start_code - SLICE_MIN_START_CODE; | |
1674 |
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|
15582 | if (s->c.codec_id != AV_CODEC_ID_MPEG1VIDEO && s->c.mb_height > 2800/16) |
1675 | ✗ | mb_y += (*buf&0xE0)<<2; | |
1676 | 15582 | mb_y <<= field_pic; | |
1677 |
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✓ Branch 1 taken 15582 times.
|
15582 | if (s->c.picture_structure == PICT_BOTTOM_FIELD) |
1678 | ✗ | mb_y++; | |
1679 |
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✓ Branch 1 taken 15582 times.
|
15582 | if (mb_y >= s->c.end_mb_y) |
1680 | ✗ | return AVERROR_INVALIDDATA; | |
1681 | } | ||
1682 | } | ||
1683 | |||
1684 | /** | ||
1685 | * Handle slice ends. | ||
1686 | * @return 1 if it seems to be the last slice | ||
1687 | */ | ||
1688 | 4185 | static int slice_end(AVCodecContext *avctx, AVFrame *pict, int *got_output) | |
1689 | { | ||
1690 | 4185 | Mpeg1Context *s1 = avctx->priv_data; | |
1691 | 4185 | MPVContext *const s = &s1->slice.c; | |
1692 | |||
1693 |
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4185 | if (!s->context_initialized || !s->cur_pic.ptr) |
1694 | 286 | return 0; | |
1695 | |||
1696 |
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3899 | if (s->avctx->hwaccel) { |
1697 | ✗ | int ret = FF_HW_SIMPLE_CALL(s->avctx, end_frame); | |
1698 | ✗ | if (ret < 0) { | |
1699 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
1700 | "hardware accelerator failed to decode picture\n"); | ||
1701 | ✗ | return ret; | |
1702 | } | ||
1703 | } | ||
1704 | |||
1705 | /* end of slice reached */ | ||
1706 |
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3899 | if (/* s->mb_y << field_pic == s->mb_height && */ !s->first_field && !s1->first_slice) { |
1707 | /* end of image */ | ||
1708 | |||
1709 | 3898 | ff_er_frame_end(&s->er, NULL); | |
1710 | |||
1711 | 3898 | ff_mpv_frame_end(s); | |
1712 | |||
1713 |
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3898 | if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { |
1714 | 1949 | int ret = av_frame_ref(pict, s->cur_pic.ptr->f); | |
1715 |
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|
1949 | if (ret < 0) |
1716 | ✗ | return ret; | |
1717 | 1949 | ff_print_debug_info(s, s->cur_pic.ptr, pict); | |
1718 | 1949 | ff_mpv_export_qp_table(s, pict, s->cur_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG2); | |
1719 | 1949 | *got_output = 1; | |
1720 | } else { | ||
1721 | /* latency of 1 frame for I- and P-frames */ | ||
1722 |
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1949 | if (s->last_pic.ptr && !s->last_pic.ptr->dummy) { |
1723 | 1887 | int ret = av_frame_ref(pict, s->last_pic.ptr->f); | |
1724 |
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|
1887 | if (ret < 0) |
1725 | ✗ | return ret; | |
1726 | 1887 | ff_print_debug_info(s, s->last_pic.ptr, pict); | |
1727 | 1887 | ff_mpv_export_qp_table(s, pict, s->last_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG2); | |
1728 | 1887 | *got_output = 1; | |
1729 | } | ||
1730 | } | ||
1731 | |||
1732 | 3898 | return 1; | |
1733 | } else { | ||
1734 | 1 | return 0; | |
1735 | } | ||
1736 | } | ||
1737 | |||
1738 | 809 | static int mpeg1_decode_sequence(AVCodecContext *avctx, | |
1739 | const uint8_t *buf, int buf_size) | ||
1740 | { | ||
1741 | 809 | Mpeg1Context *s1 = avctx->priv_data; | |
1742 | 809 | MPVContext *const s = &s1->slice.c; | |
1743 | 809 | GetBitContext gb0, *const gb = &gb0; | |
1744 | int width, height; | ||
1745 | int i, v, j; | ||
1746 | |||
1747 | 809 | int ret = init_get_bits8(gb, buf, buf_size); | |
1748 |
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809 | if (ret < 0) |
1749 | ✗ | return ret; | |
1750 | |||
1751 | 809 | width = get_bits(gb, 12); | |
1752 | 809 | height = get_bits(gb, 12); | |
1753 |
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809 | if (width == 0 || height == 0) { |
1754 | ✗ | av_log(avctx, AV_LOG_WARNING, | |
1755 | "Invalid horizontal or vertical size value.\n"); | ||
1756 | ✗ | if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) | |
1757 | ✗ | return AVERROR_INVALIDDATA; | |
1758 | } | ||
1759 | 809 | s1->aspect_ratio_info = get_bits(gb, 4); | |
1760 |
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809 | if (s1->aspect_ratio_info == 0) { |
1761 | ✗ | av_log(avctx, AV_LOG_ERROR, "aspect ratio has forbidden 0 value\n"); | |
1762 | ✗ | if (avctx->err_recognition & (AV_EF_BITSTREAM | AV_EF_COMPLIANT)) | |
1763 | ✗ | return AVERROR_INVALIDDATA; | |
1764 | } | ||
1765 | 809 | s1->frame_rate_index = get_bits(gb, 4); | |
1766 |
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809 | if (s1->frame_rate_index == 0 || s1->frame_rate_index > 13) { |
1767 | ✗ | av_log(avctx, AV_LOG_WARNING, | |
1768 | "frame_rate_index %d is invalid\n", s1->frame_rate_index); | ||
1769 | ✗ | s1->frame_rate_index = 1; | |
1770 | } | ||
1771 | 809 | s1->bit_rate = get_bits(gb, 18) * 400; | |
1772 |
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809 | if (check_marker(s->avctx, gb, "in sequence header") == 0) { |
1773 | ✗ | return AVERROR_INVALIDDATA; | |
1774 | } | ||
1775 | |||
1776 | 809 | s->avctx->rc_buffer_size = get_bits(gb, 10) * 1024 * 16; | |
1777 | 809 | skip_bits(gb, 1); | |
1778 | |||
1779 | /* get matrix */ | ||
1780 |
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809 | if (get_bits1(gb)) { |
1781 | 22 | load_matrix(s, gb, s->chroma_intra_matrix, s->intra_matrix, 1); | |
1782 | } else { | ||
1783 |
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51155 | for (i = 0; i < 64; i++) { |
1784 | 50368 | j = s->idsp.idct_permutation[i]; | |
1785 | 50368 | v = ff_mpeg1_default_intra_matrix[i]; | |
1786 | 50368 | s->intra_matrix[j] = v; | |
1787 | 50368 | s->chroma_intra_matrix[j] = v; | |
1788 | } | ||
1789 | } | ||
1790 |
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809 | if (get_bits1(gb)) { |
1791 | 84 | load_matrix(s, gb, s->chroma_inter_matrix, s->inter_matrix, 0); | |
1792 | } else { | ||
1793 |
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47125 | for (i = 0; i < 64; i++) { |
1794 | 46400 | int j = s->idsp.idct_permutation[i]; | |
1795 | 46400 | v = ff_mpeg1_default_non_intra_matrix[i]; | |
1796 | 46400 | s->inter_matrix[j] = v; | |
1797 | 46400 | s->chroma_inter_matrix[j] = v; | |
1798 | } | ||
1799 | } | ||
1800 | |||
1801 |
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809 | if (show_bits(gb, 23) != 0) { |
1802 | ✗ | av_log(s->avctx, AV_LOG_ERROR, "sequence header damaged\n"); | |
1803 | ✗ | return AVERROR_INVALIDDATA; | |
1804 | } | ||
1805 | |||
1806 | 809 | s->width = width; | |
1807 | 809 | s->height = height; | |
1808 | |||
1809 | /* We set MPEG-2 parameters so that it emulates MPEG-1. */ | ||
1810 | 809 | s->progressive_sequence = 1; | |
1811 | 809 | s->progressive_frame = 1; | |
1812 | 809 | s->picture_structure = PICT_FRAME; | |
1813 | 809 | s->first_field = 0; | |
1814 | 809 | s->frame_pred_frame_dct = 1; | |
1815 | 809 | s->chroma_format = CHROMA_420; | |
1816 | 809 | s->codec_id = | |
1817 | 809 | s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; | |
1818 |
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809 | if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY) |
1819 | ✗ | s->low_delay = 1; | |
1820 | |||
1821 |
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809 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
1822 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%"PRId64", aspect_ratio_info: %d \n", | |
1823 | ✗ | s->avctx->rc_buffer_size, s1->bit_rate, s1->aspect_ratio_info); | |
1824 | |||
1825 | 809 | return 0; | |
1826 | } | ||
1827 | |||
1828 | 2 | static int vcr2_init_sequence(AVCodecContext *avctx) | |
1829 | { | ||
1830 | 2 | Mpeg1Context *s1 = avctx->priv_data; | |
1831 | 2 | MPVContext *const s = &s1->slice.c; | |
1832 | int i, v, ret; | ||
1833 | |||
1834 | /* start new MPEG-1 context decoding */ | ||
1835 |
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2 | if (s->context_initialized) |
1836 | ✗ | ff_mpv_common_end(s); | |
1837 | |||
1838 | 2 | s->width = avctx->coded_width; | |
1839 | 2 | s->height = avctx->coded_height; | |
1840 | 2 | avctx->has_b_frames = 0; // true? | |
1841 | 2 | s->low_delay = 1; | |
1842 | |||
1843 | 2 | avctx->pix_fmt = mpeg_get_pixelformat(avctx); | |
1844 | |||
1845 |
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2 | if ((ret = ff_mpv_common_init(s)) < 0) |
1846 | ✗ | return ret; | |
1847 |
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2 | if (!s->avctx->lowres) |
1848 |
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4 | for (int i = 0; i < s->slice_context_count; i++) |
1849 | 2 | ff_mpv_framesize_disable(&s->thread_context[i]->sc); | |
1850 | |||
1851 |
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130 | for (i = 0; i < 64; i++) { |
1852 | 128 | int j = s->idsp.idct_permutation[i]; | |
1853 | 128 | v = ff_mpeg1_default_intra_matrix[i]; | |
1854 | 128 | s->intra_matrix[j] = v; | |
1855 | 128 | s->chroma_intra_matrix[j] = v; | |
1856 | |||
1857 | 128 | v = ff_mpeg1_default_non_intra_matrix[i]; | |
1858 | 128 | s->inter_matrix[j] = v; | |
1859 | 128 | s->chroma_inter_matrix[j] = v; | |
1860 | } | ||
1861 | |||
1862 | 2 | s->progressive_sequence = 1; | |
1863 | 2 | s->progressive_frame = 1; | |
1864 | 2 | s->picture_structure = PICT_FRAME; | |
1865 | 2 | s->first_field = 0; | |
1866 | 2 | s->frame_pred_frame_dct = 1; | |
1867 | 2 | s->chroma_format = CHROMA_420; | |
1868 |
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2 | if (s->codec_tag == AV_RL32("BW10")) { |
1869 | ✗ | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG1VIDEO; | |
1870 | } else { | ||
1871 | 2 | s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO; | |
1872 | } | ||
1873 | 2 | s1->save_progressive_seq = s->progressive_sequence; | |
1874 | 2 | s1->save_chroma_format = s->chroma_format; | |
1875 | 2 | return 0; | |
1876 | } | ||
1877 | |||
1878 | 758 | static void mpeg_set_cc_format(AVCodecContext *avctx, enum Mpeg2ClosedCaptionsFormat format, | |
1879 | const char *label) | ||
1880 | { | ||
1881 | 758 | Mpeg1Context *s1 = avctx->priv_data; | |
1882 | |||
1883 | av_assert2(format != CC_FORMAT_AUTO); | ||
1884 | |||
1885 |
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758 | if (!s1->cc_format) { |
1886 | 11 | s1->cc_format = format; | |
1887 | |||
1888 | 11 | av_log(avctx, AV_LOG_DEBUG, "CC: first seen substream is %s format\n", label); | |
1889 | } | ||
1890 | |||
1891 | #if FF_API_CODEC_PROPS | ||
1892 | FF_DISABLE_DEPRECATION_WARNINGS | ||
1893 | 758 | avctx->properties |= FF_CODEC_PROPERTY_CLOSED_CAPTIONS; | |
1894 | FF_ENABLE_DEPRECATION_WARNINGS | ||
1895 | #endif | ||
1896 | 758 | } | |
1897 | |||
1898 | 830 | static int mpeg_decode_a53_cc(AVCodecContext *avctx, | |
1899 | const uint8_t *p, int buf_size) | ||
1900 | { | ||
1901 | 830 | Mpeg1Context *s1 = avctx->priv_data; | |
1902 | |||
1903 |
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830 | if ((!s1->cc_format || s1->cc_format == CC_FORMAT_A53_PART4) && |
1904 | 627 | buf_size >= 6 && | |
1905 |
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627 | p[0] == 'G' && p[1] == 'A' && p[2] == '9' && p[3] == '4' && |
1906 |
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553 | p[4] == 3 && (p[5] & 0x40)) { |
1907 | /* extract A53 Part 4 CC data */ | ||
1908 | 553 | int cc_count = p[5] & 0x1f; | |
1909 |
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553 | if (cc_count > 0 && buf_size >= 7 + cc_count * 3) { |
1910 |
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553 | int old_size = s1->a53_buf_ref ? s1->a53_buf_ref->size : 0; |
1911 | 553 | const uint64_t new_size = (old_size + cc_count | |
1912 | 553 | * UINT64_C(3)); | |
1913 | int ret; | ||
1914 | |||
1915 |
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553 | if (new_size > 3*A53_MAX_CC_COUNT) |
1916 | ✗ | return AVERROR(EINVAL); | |
1917 | |||
1918 | 553 | ret = av_buffer_realloc(&s1->a53_buf_ref, new_size); | |
1919 |
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553 | if (ret >= 0) |
1920 | 553 | memcpy(s1->a53_buf_ref->data + old_size, p + 7, cc_count * UINT64_C(3)); | |
1921 | |||
1922 | 553 | mpeg_set_cc_format(avctx, CC_FORMAT_A53_PART4, "A/53 Part 4"); | |
1923 | } | ||
1924 | 553 | return 1; | |
1925 |
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277 | } else if ((!s1->cc_format || s1->cc_format == CC_FORMAT_SCTE20) && |
1926 | 277 | buf_size >= 2 && | |
1927 |
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277 | p[0] == 0x03 && (p[1]&0x7f) == 0x01) { |
1928 | /* extract SCTE-20 CC data */ | ||
1929 | GetBitContext gb; | ||
1930 | 205 | int cc_count = 0; | |
1931 | int i, ret; | ||
1932 | |||
1933 | 205 | ret = init_get_bits8(&gb, p + 2, buf_size - 2); | |
1934 |
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205 | if (ret < 0) |
1935 | ✗ | return ret; | |
1936 | 205 | cc_count = get_bits(&gb, 5); | |
1937 |
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205 | if (cc_count > 0) { |
1938 |
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205 | int old_size = s1->a53_buf_ref ? s1->a53_buf_ref->size : 0; |
1939 | 205 | const uint64_t new_size = (old_size + cc_count | |
1940 | 205 | * UINT64_C(3)); | |
1941 |
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205 | if (new_size > 3*A53_MAX_CC_COUNT) |
1942 | ✗ | return AVERROR(EINVAL); | |
1943 | |||
1944 | 205 | ret = av_buffer_realloc(&s1->a53_buf_ref, new_size); | |
1945 |
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205 | if (ret >= 0) { |
1946 | uint8_t field, cc1, cc2; | ||
1947 | 205 | uint8_t *cap = s1->a53_buf_ref->data + old_size; | |
1948 | |||
1949 | 205 | memset(cap, 0, cc_count * 3); | |
1950 |
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615 | for (i = 0; i < cc_count && get_bits_left(&gb) >= 26; i++) { |
1951 | 410 | skip_bits(&gb, 2); // priority | |
1952 | 410 | field = get_bits(&gb, 2); | |
1953 | 410 | skip_bits(&gb, 5); // line_offset | |
1954 | 410 | cc1 = get_bits(&gb, 8); | |
1955 | 410 | cc2 = get_bits(&gb, 8); | |
1956 | 410 | skip_bits(&gb, 1); // marker | |
1957 | |||
1958 |
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410 | if (!field) { // forbidden |
1959 | ✗ | cap[0] = cap[1] = cap[2] = 0x00; | |
1960 | } else { | ||
1961 | 410 | field = (field == 2 ? 1 : 0); | |
1962 |
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410 | if (!s1->slice.c.top_field_first) field = !field; |
1963 | 410 | cap[0] = 0x04 | field; | |
1964 | 410 | cap[1] = ff_reverse[cc1]; | |
1965 | 410 | cap[2] = ff_reverse[cc2]; | |
1966 | } | ||
1967 | 410 | cap += 3; | |
1968 | } | ||
1969 | } | ||
1970 | |||
1971 | 205 | mpeg_set_cc_format(avctx, CC_FORMAT_SCTE20, "SCTE-20"); | |
1972 | } | ||
1973 | 205 | return 1; | |
1974 |
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72 | } else if ((!s1->cc_format || s1->cc_format == CC_FORMAT_DVD) && |
1975 | 72 | buf_size >= 11 && | |
1976 |
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72 | p[0] == 'C' && p[1] == 'C' && p[2] == 0x01 && p[3] == 0xf8) { |
1977 | /* extract DVD CC data | ||
1978 | * | ||
1979 | * uint32_t user_data_start_code 0x000001B2 (big endian) | ||
1980 | * uint16_t user_identifier 0x4343 "CC" | ||
1981 | * uint8_t user_data_type_code 0x01 | ||
1982 | * uint8_t caption_block_size 0xF8 | ||
1983 | * uint8_t | ||
1984 | * bit 7 caption_odd_field_first 1=odd field (CC1/CC2) first 0=even field (CC3/CC4) first | ||
1985 | * bit 6 caption_filler 0 | ||
1986 | * bit 5:1 caption_block_count number of caption blocks (pairs of caption words = frames). Most DVDs use 15 per start of GOP. | ||
1987 | * bit 0 caption_extra_field_added 1=one additional caption word | ||
1988 | * | ||
1989 | * struct caption_field_block { | ||
1990 | * uint8_t | ||
1991 | * bit 7:1 caption_filler 0x7F (all 1s) | ||
1992 | * bit 0 caption_field_odd 1=odd field (this is CC1/CC2) 0=even field (this is CC3/CC4) | ||
1993 | * uint8_t caption_first_byte | ||
1994 | * uint8_t caption_second_byte | ||
1995 | * } caption_block[(caption_block_count * 2) + caption_extra_field_added]; | ||
1996 | * | ||
1997 | * Some DVDs encode caption data for both fields with caption_field_odd=1. The only way to decode the fields | ||
1998 | * correctly is to start on the field indicated by caption_odd_field_first and count between odd/even fields. | ||
1999 | * Don't assume that the first caption word is the odd field. There do exist MPEG files in the wild that start | ||
2000 | * on the even field. There also exist DVDs in the wild that encode an odd field count and the | ||
2001 | * caption_extra_field_added/caption_odd_field_first bits change per packet to allow that. */ | ||
2002 | ✗ | int cc_count = 0; | |
2003 | int i, ret; | ||
2004 | // There is a caption count field in the data, but it is often | ||
2005 | // incorrect. So count the number of captions present. | ||
2006 | ✗ | for (i = 5; i + 6 <= buf_size && ((p[i] & 0xfe) == 0xfe); i += 6) | |
2007 | ✗ | cc_count++; | |
2008 | // Transform the DVD format into A53 Part 4 format | ||
2009 | ✗ | if (cc_count > 0) { | |
2010 | ✗ | int old_size = s1->a53_buf_ref ? s1->a53_buf_ref->size : 0; | |
2011 | ✗ | const uint64_t new_size = (old_size + cc_count | |
2012 | ✗ | * UINT64_C(6)); | |
2013 | ✗ | if (new_size > 3*A53_MAX_CC_COUNT) | |
2014 | ✗ | return AVERROR(EINVAL); | |
2015 | |||
2016 | ✗ | ret = av_buffer_realloc(&s1->a53_buf_ref, new_size); | |
2017 | ✗ | if (ret >= 0) { | |
2018 | ✗ | uint8_t field1 = !!(p[4] & 0x80); | |
2019 | ✗ | uint8_t *cap = s1->a53_buf_ref->data + old_size; | |
2020 | ✗ | p += 5; | |
2021 | ✗ | for (i = 0; i < cc_count; i++) { | |
2022 | ✗ | cap[0] = (p[0] == 0xff && field1) ? 0xfc : 0xfd; | |
2023 | ✗ | cap[1] = p[1]; | |
2024 | ✗ | cap[2] = p[2]; | |
2025 | ✗ | cap[3] = (p[3] == 0xff && !field1) ? 0xfc : 0xfd; | |
2026 | ✗ | cap[4] = p[4]; | |
2027 | ✗ | cap[5] = p[5]; | |
2028 | ✗ | cap += 6; | |
2029 | ✗ | p += 6; | |
2030 | } | ||
2031 | } | ||
2032 | |||
2033 | ✗ | mpeg_set_cc_format(avctx, CC_FORMAT_DVD, "DVD"); | |
2034 | } | ||
2035 | ✗ | return 1; | |
2036 |
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72 | } else if ((!s1->cc_format || s1->cc_format == CC_FORMAT_DISH) && |
2037 | 72 | buf_size >= 12 && | |
2038 |
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72 | p[0] == 0x05 && p[1] == 0x02) { |
2039 | /* extract Dish Network CC data */ | ||
2040 | ✗ | const uint8_t cc_header = 0xf8 | 0x04 /* valid */ | 0x00 /* line 21 field 1 */; | |
2041 | ✗ | uint8_t cc_data[4] = {0}; | |
2042 | ✗ | int cc_count = 0; | |
2043 | ✗ | uint8_t cc_type = p[7]; | |
2044 | ✗ | p += 8; | |
2045 | ✗ | buf_size -= 8; | |
2046 | |||
2047 | ✗ | if (cc_type == 0x05 && buf_size >= 7) { | |
2048 | ✗ | cc_type = p[6]; | |
2049 | ✗ | p += 7; | |
2050 | ✗ | buf_size -= 7; | |
2051 | } | ||
2052 | |||
2053 | ✗ | if (cc_type == 0x02 && buf_size >= 4) { /* 2-byte caption, can be repeated */ | |
2054 | ✗ | cc_count = 1; | |
2055 | ✗ | cc_data[0] = p[1]; | |
2056 | ✗ | cc_data[1] = p[2]; | |
2057 | ✗ | cc_type = p[3]; | |
2058 | |||
2059 | /* Only repeat characters when the next type flag | ||
2060 | * is 0x04 and the characters are repeatable (i.e., less than | ||
2061 | * 32 with the parity stripped). | ||
2062 | */ | ||
2063 | ✗ | if (cc_type == 0x04 && (cc_data[0] & 0x7f) < 32) { | |
2064 | ✗ | cc_count = 2; | |
2065 | ✗ | cc_data[2] = cc_data[0]; | |
2066 | ✗ | cc_data[3] = cc_data[1]; | |
2067 | } | ||
2068 | ✗ | } else if (cc_type == 0x04 && buf_size >= 5) { /* 4-byte caption, not repeated */ | |
2069 | ✗ | cc_count = 2; | |
2070 | ✗ | cc_data[0] = p[1]; | |
2071 | ✗ | cc_data[1] = p[2]; | |
2072 | ✗ | cc_data[2] = p[3]; | |
2073 | ✗ | cc_data[3] = p[4]; | |
2074 | } | ||
2075 | |||
2076 | ✗ | if (cc_count > 0) { | |
2077 | int ret; | ||
2078 | ✗ | int old_size = s1->a53_buf_ref ? s1->a53_buf_ref->size : 0; | |
2079 | ✗ | const uint64_t new_size = (old_size + cc_count * UINT64_C(3)); | |
2080 | ✗ | if (new_size > 3 * A53_MAX_CC_COUNT) | |
2081 | ✗ | return AVERROR(EINVAL); | |
2082 | |||
2083 | ✗ | ret = av_buffer_realloc(&s1->a53_buf_ref, new_size); | |
2084 | ✗ | if (ret >= 0) { | |
2085 | ✗ | uint8_t *cap = s1->a53_buf_ref->data + old_size; | |
2086 | ✗ | cap[0] = cc_header; | |
2087 | ✗ | cap[1] = cc_data[0]; | |
2088 | ✗ | cap[2] = cc_data[1]; | |
2089 | ✗ | if (cc_count == 2) { | |
2090 | ✗ | cap[3] = cc_header; | |
2091 | ✗ | cap[4] = cc_data[2]; | |
2092 | ✗ | cap[5] = cc_data[3]; | |
2093 | } | ||
2094 | } | ||
2095 | |||
2096 | ✗ | mpeg_set_cc_format(avctx, CC_FORMAT_DISH, "Dish Network"); | |
2097 | } | ||
2098 | ✗ | return 1; | |
2099 | } | ||
2100 | 72 | return 0; | |
2101 | } | ||
2102 | |||
2103 | 1037 | static void mpeg_decode_user_data(AVCodecContext *avctx, | |
2104 | const uint8_t *p, int buf_size) | ||
2105 | { | ||
2106 | 1037 | const uint8_t *buf_end = p + buf_size; | |
2107 | 1037 | Mpeg1Context *s1 = avctx->priv_data; | |
2108 | |||
2109 | #if 0 | ||
2110 | int i; | ||
2111 | for(i=0; !(!p[i-2] && !p[i-1] && p[i]==1) && i<buf_size; i++){ | ||
2112 | av_log(avctx, AV_LOG_ERROR, "%c", p[i]); | ||
2113 | } | ||
2114 | av_log(avctx, AV_LOG_ERROR, "\n"); | ||
2115 | #endif | ||
2116 | |||
2117 |
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1037 | if (buf_size > 29){ |
2118 | int i; | ||
2119 |
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21777 | for(i=0; i<20; i++) |
2120 |
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20740 | if (!memcmp(p+i, "\0TMPGEXS\0", 9)){ |
2121 | ✗ | s1->tmpgexs = 1; | |
2122 | } | ||
2123 | } | ||
2124 | /* we parse the DTG active format information */ | ||
2125 |
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1037 | if (buf_end - p >= 5 && |
2126 |
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|
1244 | p[0] == 'D' && p[1] == 'T' && p[2] == 'G' && p[3] == '1') { |
2127 | 207 | int flags = p[4]; | |
2128 | 207 | p += 5; | |
2129 |
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207 | if (flags & 0x80) { |
2130 | /* skip event id */ | ||
2131 | ✗ | p += 2; | |
2132 | } | ||
2133 |
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207 | if (flags & 0x40) { |
2134 |
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207 | if (buf_end - p < 1) |
2135 | ✗ | return; | |
2136 | 207 | s1->has_afd = 1; | |
2137 | 207 | s1->afd = p[0] & 0x0f; | |
2138 | } | ||
2139 |
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830 | } else if (buf_end - p >= 6 && |
2140 |
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|
830 | p[0] == 'J' && p[1] == 'P' && p[2] == '3' && p[3] == 'D' && |
2141 | ✗ | p[4] == 0x03) { // S3D_video_format_length | |
2142 | // the 0x7F mask ignores the reserved_bit value | ||
2143 | ✗ | const uint8_t S3D_video_format_type = p[5] & 0x7F; | |
2144 | |||
2145 | ✗ | if (S3D_video_format_type == 0x03 || | |
2146 | ✗ | S3D_video_format_type == 0x04 || | |
2147 | ✗ | S3D_video_format_type == 0x08 || | |
2148 | S3D_video_format_type == 0x23) { | ||
2149 | |||
2150 | ✗ | s1->has_stereo3d = 1; | |
2151 | |||
2152 | ✗ | switch (S3D_video_format_type) { | |
2153 | ✗ | case 0x03: | |
2154 | ✗ | s1->stereo3d_type = AV_STEREO3D_SIDEBYSIDE; | |
2155 | ✗ | break; | |
2156 | ✗ | case 0x04: | |
2157 | ✗ | s1->stereo3d_type = AV_STEREO3D_TOPBOTTOM; | |
2158 | ✗ | break; | |
2159 | ✗ | case 0x08: | |
2160 | ✗ | s1->stereo3d_type = AV_STEREO3D_2D; | |
2161 | ✗ | break; | |
2162 | ✗ | case 0x23: | |
2163 | ✗ | s1->stereo3d_type = AV_STEREO3D_SIDEBYSIDE_QUINCUNX; | |
2164 | ✗ | break; | |
2165 | } | ||
2166 | } | ||
2167 |
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830 | } else if (mpeg_decode_a53_cc(avctx, p, buf_size)) { |
2168 | 758 | return; | |
2169 | } | ||
2170 | } | ||
2171 | |||
2172 | 560 | static int mpeg_decode_gop(AVCodecContext *avctx, | |
2173 | const uint8_t *buf, int buf_size) | ||
2174 | { | ||
2175 | 560 | Mpeg1Context *s1 = avctx->priv_data; | |
2176 | 560 | MPVContext *const s = &s1->slice.c; | |
2177 | 560 | GetBitContext gb0, *const gb = &gb0; | |
2178 | int broken_link; | ||
2179 | int64_t tc; | ||
2180 | |||
2181 | 560 | int ret = init_get_bits8(gb, buf, buf_size); | |
2182 |
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560 | if (ret < 0) |
2183 | ✗ | return ret; | |
2184 | |||
2185 | 560 | tc = s1->timecode_frame_start = get_bits(gb, 25); | |
2186 | |||
2187 | 560 | s1->closed_gop = get_bits1(gb); | |
2188 | /* broken_link indicates that after editing the | ||
2189 | * reference frames of the first B-Frames after GOP I-Frame | ||
2190 | * are missing (open gop) */ | ||
2191 | 560 | broken_link = get_bits1(gb); | |
2192 | |||
2193 |
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560 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) { |
2194 | char tcbuf[AV_TIMECODE_STR_SIZE]; | ||
2195 | ✗ | av_timecode_make_mpeg_tc_string(tcbuf, tc); | |
2196 | ✗ | av_log(s->avctx, AV_LOG_DEBUG, | |
2197 | "GOP (%s) closed_gop=%d broken_link=%d\n", | ||
2198 | tcbuf, s1->closed_gop, broken_link); | ||
2199 | } | ||
2200 | |||
2201 | 560 | return 0; | |
2202 | } | ||
2203 | |||
2204 | 4185 | static void mpeg12_execute_slice_threads(AVCodecContext *avctx, | |
2205 | Mpeg1Context *const s) | ||
2206 | { | ||
2207 |
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4185 | if (HAVE_THREADS && (avctx->active_thread_type & FF_THREAD_SLICE) && |
2208 |
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747 | !avctx->hwaccel) { |
2209 | 747 | MPVContext *const s2 = &s->slice.c; | |
2210 | 747 | int error_count = 0; | |
2211 | |||
2212 | 747 | avctx->execute(avctx, slice_decode_thread, | |
2213 | 747 | s2->mpeg12_contexts, NULL, | |
2214 | s->slice_count, sizeof(s2->mpeg12_contexts[0])); | ||
2215 | |||
2216 |
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7425 | for (int i = 0; i < s->slice_count; i++) { |
2217 | 6678 | MpegEncContext *const slice = s2->thread_context[i]; | |
2218 | 6678 | int slice_err = atomic_load_explicit(&slice->er.error_count, | |
2219 | memory_order_relaxed); | ||
2220 | // error_count can get set to INT_MAX on serious errors. | ||
2221 | // So use saturated addition. | ||
2222 |
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6678 | if ((unsigned)slice_err > INT_MAX - error_count) { |
2223 | ✗ | error_count = INT_MAX; | |
2224 | ✗ | break; | |
2225 | } | ||
2226 | 6678 | error_count += slice_err; | |
2227 | } | ||
2228 | 747 | atomic_store_explicit(&s2->er.error_count, error_count, | |
2229 | memory_order_relaxed); | ||
2230 | } | ||
2231 | 4185 | } | |
2232 | |||
2233 | 4674 | static int decode_chunks(AVCodecContext *avctx, AVFrame *picture, | |
2234 | int *got_output, const uint8_t *buf, int buf_size) | ||
2235 | { | ||
2236 | 4674 | Mpeg1Context *s = avctx->priv_data; | |
2237 | 4674 | MPVContext *const s2 = &s->slice.c; | |
2238 | 4674 | const uint8_t *buf_ptr = buf; | |
2239 | 4674 | const uint8_t *buf_end = buf + buf_size; | |
2240 | int ret, input_size; | ||
2241 | 4674 | int last_code = 0, skip_frame = 0; | |
2242 | 4674 | int picture_start_code_seen = 0; | |
2243 | |||
2244 | 224217 | for (;;) { | |
2245 | /* find next start code */ | ||
2246 | 228891 | uint32_t start_code = -1; | |
2247 | 228891 | buf_ptr = avpriv_find_start_code(buf_ptr, buf_end, &start_code); | |
2248 |
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228891 | if (start_code > 0x1ff) { |
2249 |
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|
4504 | if (!skip_frame) { |
2250 | 4185 | mpeg12_execute_slice_threads(avctx, s); | |
2251 | |||
2252 | 4185 | ret = slice_end(avctx, picture, got_output); | |
2253 |
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4185 | if (ret < 0) |
2254 | 4674 | return ret; | |
2255 | } | ||
2256 | 4504 | s2->pict_type = 0; | |
2257 | |||
2258 |
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4504 | if (avctx->err_recognition & AV_EF_EXPLODE && s2->er.error_count) |
2259 | ✗ | return AVERROR_INVALIDDATA; | |
2260 | |||
2261 | 4504 | return FFMAX(0, buf_ptr - buf); | |
2262 | } | ||
2263 | |||
2264 | 224387 | input_size = buf_end - buf_ptr; | |
2265 | |||
2266 |
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224387 | if (avctx->debug & FF_DEBUG_STARTCODE) |
2267 | ✗ | av_log(avctx, AV_LOG_DEBUG, "%3"PRIX32" at %"PTRDIFF_SPECIFIER" left %d\n", | |
2268 | start_code, buf_ptr - buf, input_size); | ||
2269 | |||
2270 | /* prepare data for next start code */ | ||
2271 |
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224387 | switch (start_code) { |
2272 | 809 | case SEQ_START_CODE: | |
2273 |
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809 | if (last_code == 0) { |
2274 | 809 | mpeg1_decode_sequence(avctx, buf_ptr, input_size); | |
2275 |
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809 | if (buf != avctx->extradata) |
2276 | 551 | s->sync = 1; | |
2277 | } else { | ||
2278 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2279 | "ignoring SEQ_START_CODE after %X\n", last_code); | ||
2280 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2281 | ✗ | return AVERROR_INVALIDDATA; | |
2282 | } | ||
2283 | 809 | break; | |
2284 | |||
2285 | 5220 | case PICTURE_START_CODE: | |
2286 |
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5220 | if (picture_start_code_seen && s2->picture_structure == PICT_FRAME) { |
2287 | /* If it's a frame picture, there can't be more than one picture header. | ||
2288 | Yet, it does happen and we need to handle it. */ | ||
2289 | ✗ | av_log(avctx, AV_LOG_WARNING, "ignoring extra picture following a frame-picture\n"); | |
2290 | ✗ | break; | |
2291 | } | ||
2292 | 5220 | picture_start_code_seen = 1; | |
2293 | |||
2294 |
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5220 | if (buf == avctx->extradata && avctx->codec_tag == AV_RL32("AVmp")) { |
2295 | ✗ | av_log(avctx, AV_LOG_WARNING, "ignoring picture start code in AVmp extradata\n"); | |
2296 | ✗ | break; | |
2297 | } | ||
2298 | |||
2299 |
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5220 | if (s2->width <= 0 || s2->height <= 0) { |
2300 | 170 | av_log(avctx, AV_LOG_ERROR, "Invalid frame dimensions %dx%d.\n", | |
2301 | s2->width, s2->height); | ||
2302 | 170 | return AVERROR_INVALIDDATA; | |
2303 | } | ||
2304 | |||
2305 |
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5050 | if (s->tmpgexs){ |
2306 | ✗ | s2->intra_dc_precision= 3; | |
2307 | ✗ | s2->intra_matrix[0]= 1; | |
2308 | } | ||
2309 |
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5050 | if (s->slice_count) { |
2310 | ✗ | mpeg12_execute_slice_threads(avctx, s); | |
2311 | ✗ | s->slice_count = 0; | |
2312 | } | ||
2313 |
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5050 | if (last_code == 0 || last_code == SLICE_MIN_START_CODE) { |
2314 | 5050 | ret = mpeg_decode_postinit(avctx); | |
2315 |
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5050 | if (ret < 0) { |
2316 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2317 | "mpeg_decode_postinit() failure\n"); | ||
2318 | ✗ | return ret; | |
2319 | } | ||
2320 | |||
2321 | /* We have a complete image: we try to decompress it. */ | ||
2322 |
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5050 | if (mpeg1_decode_picture(avctx, buf_ptr, input_size) < 0) |
2323 | ✗ | s2->pict_type = 0; | |
2324 | 5050 | s->first_slice = 1; | |
2325 | 5050 | last_code = PICTURE_START_CODE; | |
2326 | } else { | ||
2327 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2328 | "ignoring pic after %X\n", last_code); | ||
2329 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2330 | ✗ | return AVERROR_INVALIDDATA; | |
2331 | } | ||
2332 | 5050 | break; | |
2333 | 6366 | case EXT_START_CODE: { | |
2334 | 6366 | GetBitContext gb0, *const gb = &gb0; | |
2335 | |||
2336 | 6366 | ret = init_get_bits8(gb, buf_ptr, input_size); | |
2337 |
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6366 | if (ret < 0) |
2338 | ✗ | return ret; | |
2339 | |||
2340 |
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6366 | switch (get_bits(gb, 4)) { |
2341 | 717 | case 0x1: | |
2342 |
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717 | if (last_code == 0) { |
2343 | 717 | mpeg_decode_sequence_extension(s, gb); | |
2344 | } else { | ||
2345 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2346 | "ignoring seq ext after %X\n", last_code); | ||
2347 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2348 | ✗ | return AVERROR_INVALIDDATA; | |
2349 | } | ||
2350 | 717 | break; | |
2351 | 95 | case 0x2: | |
2352 | 95 | mpeg_decode_sequence_display_extension(s, gb); | |
2353 | 95 | break; | |
2354 | 971 | case 0x3: | |
2355 | 971 | mpeg_decode_quant_matrix_extension(s2, gb); | |
2356 | 971 | break; | |
2357 | 27 | case 0x7: | |
2358 | 27 | mpeg_decode_picture_display_extension(s, gb); | |
2359 | 27 | break; | |
2360 | 4556 | case 0x8: | |
2361 |
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|
4556 | if (last_code == PICTURE_START_CODE) { |
2362 | 4556 | int ret = mpeg_decode_picture_coding_extension(s, gb); | |
2363 |
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|
4556 | if (ret < 0) |
2364 | ✗ | return ret; | |
2365 | } else { | ||
2366 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2367 | "ignoring pic cod ext after %X\n", last_code); | ||
2368 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2369 | ✗ | return AVERROR_INVALIDDATA; | |
2370 | } | ||
2371 | 4556 | break; | |
2372 | } | ||
2373 | 6366 | break; | |
2374 | } | ||
2375 | 1037 | case USER_START_CODE: | |
2376 | 1037 | mpeg_decode_user_data(avctx, buf_ptr, input_size); | |
2377 | 1037 | break; | |
2378 | 560 | case GOP_START_CODE: | |
2379 |
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560 | if (last_code == 0) { |
2380 | 560 | s2->first_field = 0; | |
2381 | 560 | ret = mpeg_decode_gop(avctx, buf_ptr, input_size); | |
2382 |
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560 | if (ret < 0) |
2383 | ✗ | return ret; | |
2384 | 560 | s->sync = 1; | |
2385 | } else { | ||
2386 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2387 | "ignoring GOP_START_CODE after %X\n", last_code); | ||
2388 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2389 | ✗ | return AVERROR_INVALIDDATA; | |
2390 | } | ||
2391 | 560 | break; | |
2392 | 210395 | default: | |
2393 |
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210395 | if (start_code >= SLICE_MIN_START_CODE && |
2394 |
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|
209495 | start_code <= SLICE_MAX_START_CODE && last_code == PICTURE_START_CODE) { |
2395 |
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|
5050 | if (s2->progressive_sequence && !s2->progressive_frame) { |
2396 | ✗ | s2->progressive_frame = 1; | |
2397 | ✗ | av_log(s2->avctx, AV_LOG_ERROR, | |
2398 | "interlaced frame in progressive sequence, ignoring\n"); | ||
2399 | } | ||
2400 | |||
2401 |
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5050 | if (s2->picture_structure == 0 || |
2402 |
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|
5050 | (s2->progressive_frame && s2->picture_structure != PICT_FRAME)) { |
2403 | ✗ | av_log(s2->avctx, AV_LOG_ERROR, | |
2404 | "picture_structure %d invalid, ignoring\n", | ||
2405 | s2->picture_structure); | ||
2406 | ✗ | s2->picture_structure = PICT_FRAME; | |
2407 | } | ||
2408 | |||
2409 |
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|
5050 | if (s2->progressive_sequence && !s2->frame_pred_frame_dct) |
2410 | ✗ | av_log(s2->avctx, AV_LOG_WARNING, "invalid frame_pred_frame_dct\n"); | |
2411 | |||
2412 |
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5050 | if (s2->picture_structure == PICT_FRAME) { |
2413 | 3384 | s2->first_field = 0; | |
2414 | 3384 | s2->v_edge_pos = 16 * s2->mb_height; | |
2415 | } else { | ||
2416 | 1666 | s2->first_field ^= 1; | |
2417 | 1666 | s2->v_edge_pos = 8 * s2->mb_height; | |
2418 | 1666 | memset(s2->mbskip_table, 0, s2->mb_stride * s2->mb_height); | |
2419 | } | ||
2420 | } | ||
2421 |
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210395 | if (start_code >= SLICE_MIN_START_CODE && |
2422 |
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|
209495 | start_code <= SLICE_MAX_START_CODE && last_code != 0) { |
2423 | 209320 | const int field_pic = s2->picture_structure != PICT_FRAME; | |
2424 | 209320 | int mb_y = start_code - SLICE_MIN_START_CODE; | |
2425 | 209320 | last_code = SLICE_MIN_START_CODE; | |
2426 |
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|
209320 | if (s2->codec_id != AV_CODEC_ID_MPEG1VIDEO && s2->mb_height > 2800/16) |
2427 | ✗ | mb_y += (*buf_ptr&0xE0)<<2; | |
2428 | |||
2429 | 209320 | mb_y <<= field_pic; | |
2430 |
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209320 | if (s2->picture_structure == PICT_BOTTOM_FIELD) |
2431 | 13619 | mb_y++; | |
2432 | |||
2433 |
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209320 | if (buf_end - buf_ptr < 2) { |
2434 | ✗ | av_log(s2->avctx, AV_LOG_ERROR, "slice too small\n"); | |
2435 | ✗ | return AVERROR_INVALIDDATA; | |
2436 | } | ||
2437 | |||
2438 |
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209320 | if (mb_y >= s2->mb_height) { |
2439 | ✗ | av_log(s2->avctx, AV_LOG_ERROR, | |
2440 | "slice below image (%d >= %d)\n", mb_y, s2->mb_height); | ||
2441 | ✗ | return AVERROR_INVALIDDATA; | |
2442 | } | ||
2443 | |||
2444 |
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209320 | if (!s2->last_pic.ptr) { |
2445 | /* Skip B-frames if we do not have reference frames and | ||
2446 | * GOP is not closed. */ | ||
2447 |
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85820 | if (s2->pict_type == AV_PICTURE_TYPE_B) { |
2448 |
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|
732 | if (!s->closed_gop) { |
2449 | 732 | skip_frame = 1; | |
2450 | 732 | av_log(s2->avctx, AV_LOG_DEBUG, | |
2451 | "Skipping B slice due to open GOP\n"); | ||
2452 | 732 | break; | |
2453 | } | ||
2454 | } | ||
2455 | } | ||
2456 |
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|
208588 | if (s2->pict_type == AV_PICTURE_TYPE_I || (s2->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL)) |
2457 | 127721 | s->sync = 1; | |
2458 |
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208588 | if (!s2->next_pic.ptr) { |
2459 | /* Skip P-frames if we do not have a reference frame or | ||
2460 | * we have an invalid header. */ | ||
2461 |
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|
81593 | if (s2->pict_type == AV_PICTURE_TYPE_P && !s->sync) { |
2462 | 4032 | skip_frame = 1; | |
2463 | 4032 | av_log(s2->avctx, AV_LOG_DEBUG, | |
2464 | "Skipping P slice due to !sync\n"); | ||
2465 | 4032 | break; | |
2466 | } | ||
2467 | } | ||
2468 |
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|
204556 | if ((avctx->skip_frame >= AVDISCARD_NONREF && |
2469 |
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|
77485 | s2->pict_type == AV_PICTURE_TYPE_B) || |
2470 |
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204556 | (avctx->skip_frame >= AVDISCARD_NONKEY && |
2471 |
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|
77485 | s2->pict_type != AV_PICTURE_TYPE_I) || |
2472 |
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|
203644 | avctx->skip_frame >= AVDISCARD_ALL) { |
2473 | 77485 | skip_frame = 1; | |
2474 | 77485 | break; | |
2475 | } | ||
2476 | |||
2477 |
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127071 | if (!s2->context_initialized) |
2478 | ✗ | break; | |
2479 | |||
2480 |
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127071 | if (s2->codec_id == AV_CODEC_ID_MPEG2VIDEO) { |
2481 |
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119798 | if (mb_y < avctx->skip_top || |
2482 |
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|
119798 | mb_y >= s2->mb_height - avctx->skip_bottom) |
2483 | break; | ||
2484 | } | ||
2485 | |||
2486 |
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127071 | if (!s2->pict_type) { |
2487 | ✗ | av_log(avctx, AV_LOG_ERROR, "Missing picture start code\n"); | |
2488 | ✗ | if (avctx->err_recognition & AV_EF_EXPLODE) | |
2489 | ✗ | return AVERROR_INVALIDDATA; | |
2490 | ✗ | break; | |
2491 | } | ||
2492 | |||
2493 |
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127071 | if (s->first_slice) { |
2494 | 4605 | skip_frame = 0; | |
2495 | 4605 | s->first_slice = 0; | |
2496 |
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4605 | if ((ret = mpeg_field_start(s, buf, buf_size)) < 0) |
2497 | ✗ | return ret; | |
2498 | } | ||
2499 |
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127071 | if (!s2->cur_pic.ptr) { |
2500 | ✗ | av_log(avctx, AV_LOG_ERROR, | |
2501 | "current_picture not initialized\n"); | ||
2502 | ✗ | return AVERROR_INVALIDDATA; | |
2503 | } | ||
2504 | |||
2505 | 127071 | if (HAVE_THREADS && | |
2506 |
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127071 | (avctx->active_thread_type & FF_THREAD_SLICE) && |
2507 |
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22260 | !avctx->hwaccel) { |
2508 | 22260 | int threshold = (s2->mb_height * s->slice_count + | |
2509 | 22260 | s2->slice_context_count / 2) / | |
2510 | 22260 | s2->slice_context_count; | |
2511 |
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22260 | if (threshold <= mb_y) { |
2512 | 6678 | Mpeg12SliceContext *const thread_context = s2->mpeg12_contexts[s->slice_count]; | |
2513 | |||
2514 | 6678 | thread_context->c.start_mb_y = mb_y; | |
2515 | 6678 | thread_context->c.end_mb_y = s2->mb_height; | |
2516 |
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6678 | if (s->slice_count) { |
2517 | 5936 | s2->thread_context[s->slice_count - 1]->end_mb_y = mb_y; | |
2518 | 5936 | ret = ff_update_duplicate_context(&thread_context->c, s2); | |
2519 |
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|
5936 | if (ret < 0) |
2520 | ✗ | return ret; | |
2521 | } | ||
2522 | 6678 | ret = init_get_bits8(&thread_context->gb, buf_ptr, input_size); | |
2523 |
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6678 | if (ret < 0) |
2524 | ✗ | return ret; | |
2525 | 6678 | s->slice_count++; | |
2526 | } | ||
2527 | 22260 | buf_ptr += 2; // FIXME add minimum number of bytes per slice | |
2528 | } else { | ||
2529 | 104811 | ret = mpeg_decode_slice(&s->slice, mb_y, &buf_ptr, input_size); | |
2530 | 104811 | emms_c(); | |
2531 | |||
2532 |
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|
104811 | if (ret < 0) { |
2533 |
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|
10 | if (avctx->err_recognition & AV_EF_EXPLODE) |
2534 | ✗ | return ret; | |
2535 |
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|
10 | if (s2->resync_mb_x >= 0 && s2->resync_mb_y >= 0) |
2536 | 10 | ff_er_add_slice(&s2->er, s2->resync_mb_x, | |
2537 | s2->resync_mb_y, s2->mb_x, s2->mb_y, | ||
2538 | ER_AC_ERROR | ER_DC_ERROR | ER_MV_ERROR); | ||
2539 | } else { | ||
2540 | 104801 | ff_er_add_slice(&s2->er, s2->resync_mb_x, | |
2541 | 104801 | s2->resync_mb_y, s2->mb_x - 1, s2->mb_y, | |
2542 | ER_AC_END | ER_DC_END | ER_MV_END); | ||
2543 | } | ||
2544 | } | ||
2545 | } | ||
2546 | 128146 | break; | |
2547 | } | ||
2548 | } | ||
2549 | } | ||
2550 | |||
2551 | 4557 | static int mpeg_decode_frame(AVCodecContext *avctx, AVFrame *picture, | |
2552 | int *got_output, AVPacket *avpkt) | ||
2553 | { | ||
2554 | 4557 | const uint8_t *buf = avpkt->data; | |
2555 | int ret; | ||
2556 | 4557 | int buf_size = avpkt->size; | |
2557 | 4557 | Mpeg1Context *s = avctx->priv_data; | |
2558 | 4557 | MPVContext *const s2 = &s->slice.c; | |
2559 | |||
2560 |
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|
4557 | if (buf_size == 0 || (buf_size == 4 && AV_RB32(buf) == SEQ_END_CODE)) { |
2561 | /* special case for last picture */ | ||
2562 |
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|
141 | if (s2->low_delay == 0 && s2->next_pic.ptr) { |
2563 | 61 | int ret = av_frame_ref(picture, s2->next_pic.ptr->f); | |
2564 |
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|
61 | if (ret < 0) |
2565 | ✗ | return ret; | |
2566 | |||
2567 | 61 | ff_mpv_unref_picture(&s2->next_pic); | |
2568 | |||
2569 | 61 | *got_output = 1; | |
2570 | } | ||
2571 | 141 | return buf_size; | |
2572 | } | ||
2573 | |||
2574 |
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|
4416 | if (!s2->context_initialized && |
2575 |
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|
459 | (s2->codec_tag == AV_RL32("VCR2") || s2->codec_tag == AV_RL32("BW10"))) |
2576 | 2 | vcr2_init_sequence(avctx); | |
2577 | |||
2578 | 4416 | s->slice_count = 0; | |
2579 | |||
2580 |
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|
4416 | if (avctx->extradata && !s->extradata_decoded) { |
2581 | 258 | ret = decode_chunks(avctx, picture, got_output, | |
2582 | 258 | avctx->extradata, avctx->extradata_size); | |
2583 |
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|
258 | if (*got_output) { |
2584 | ✗ | av_log(avctx, AV_LOG_ERROR, "picture in extradata\n"); | |
2585 | ✗ | av_frame_unref(picture); | |
2586 | ✗ | *got_output = 0; | |
2587 | } | ||
2588 | 258 | s->extradata_decoded = 1; | |
2589 |
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258 | if (ret < 0 && (avctx->err_recognition & AV_EF_EXPLODE)) { |
2590 | ✗ | ff_mpv_unref_picture(&s2->cur_pic); | |
2591 | ✗ | return ret; | |
2592 | } | ||
2593 | } | ||
2594 | |||
2595 | 4416 | ret = decode_chunks(avctx, picture, got_output, buf, buf_size); | |
2596 |
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|
4416 | if (ret<0 || *got_output) { |
2597 | 4006 | ff_mpv_unref_picture(&s2->cur_pic); | |
2598 | |||
2599 |
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|
4006 | if (s->timecode_frame_start != -1 && *got_output) { |
2600 | char tcbuf[AV_TIMECODE_STR_SIZE]; | ||
2601 | 374 | AVFrameSideData *tcside = av_frame_new_side_data(picture, | |
2602 | AV_FRAME_DATA_GOP_TIMECODE, | ||
2603 | sizeof(int64_t)); | ||
2604 |
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|
374 | if (!tcside) |
2605 | ✗ | return AVERROR(ENOMEM); | |
2606 | 374 | memcpy(tcside->data, &s->timecode_frame_start, sizeof(int64_t)); | |
2607 | |||
2608 | 374 | av_timecode_make_mpeg_tc_string(tcbuf, s->timecode_frame_start); | |
2609 | 374 | av_dict_set(&picture->metadata, "timecode", tcbuf, 0); | |
2610 | |||
2611 | 374 | s->timecode_frame_start = -1; | |
2612 | } | ||
2613 | } | ||
2614 | |||
2615 | 4416 | return ret; | |
2616 | } | ||
2617 | |||
2618 | ✗ | static av_cold void flush(AVCodecContext *avctx) | |
2619 | { | ||
2620 | ✗ | Mpeg1Context *s = avctx->priv_data; | |
2621 | |||
2622 | ✗ | s->sync = 0; | |
2623 | ✗ | s->closed_gop = 0; | |
2624 | |||
2625 | ✗ | av_buffer_unref(&s->a53_buf_ref); | |
2626 | ✗ | ff_mpeg_flush(avctx); | |
2627 | ✗ | } | |
2628 | |||
2629 | 288 | static av_cold int mpeg_decode_end(AVCodecContext *avctx) | |
2630 | { | ||
2631 | 288 | Mpeg1Context *s = avctx->priv_data; | |
2632 | |||
2633 | 288 | av_buffer_unref(&s->a53_buf_ref); | |
2634 | 288 | return ff_mpv_decode_close(avctx); | |
2635 | } | ||
2636 | |||
2637 | const FFCodec ff_mpeg1video_decoder = { | ||
2638 | .p.name = "mpeg1video", | ||
2639 | CODEC_LONG_NAME("MPEG-1 video"), | ||
2640 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
2641 | .p.id = AV_CODEC_ID_MPEG1VIDEO, | ||
2642 | .priv_data_size = sizeof(Mpeg1Context), | ||
2643 | .init = mpeg_decode_init, | ||
2644 | .close = mpeg_decode_end, | ||
2645 | FF_CODEC_DECODE_CB(mpeg_decode_frame), | ||
2646 | .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 | | ||
2647 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, | ||
2648 | .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM, | ||
2649 | .flush = flush, | ||
2650 | .p.max_lowres = 3, | ||
2651 | .hw_configs = (const AVCodecHWConfigInternal *const []) { | ||
2652 | #if CONFIG_MPEG1_NVDEC_HWACCEL | ||
2653 | HWACCEL_NVDEC(mpeg1), | ||
2654 | #endif | ||
2655 | #if CONFIG_MPEG1_VDPAU_HWACCEL | ||
2656 | HWACCEL_VDPAU(mpeg1), | ||
2657 | #endif | ||
2658 | #if CONFIG_MPEG1_VIDEOTOOLBOX_HWACCEL | ||
2659 | HWACCEL_VIDEOTOOLBOX(mpeg1), | ||
2660 | #endif | ||
2661 | NULL | ||
2662 | }, | ||
2663 | }; | ||
2664 | |||
2665 | #define M2V_OFFSET(x) offsetof(Mpeg1Context, x) | ||
2666 | #define M2V_PARAM AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM | ||
2667 | |||
2668 | static const AVOption mpeg2video_options[] = { | ||
2669 | { "cc_format", "extract a specific Closed Captions format", | ||
2670 | M2V_OFFSET(cc_format), AV_OPT_TYPE_INT, { .i64 = CC_FORMAT_AUTO }, | ||
2671 | CC_FORMAT_AUTO, CC_FORMAT_DISH, M2V_PARAM, .unit = "cc_format" }, | ||
2672 | |||
2673 | { "auto", "pick first seen CC substream", 0, AV_OPT_TYPE_CONST, | ||
2674 | { .i64 = CC_FORMAT_AUTO }, .flags = M2V_PARAM, .unit = "cc_format" }, | ||
2675 | { "a53", "pick A/53 Part 4 CC substream", 0, AV_OPT_TYPE_CONST, | ||
2676 | { .i64 = CC_FORMAT_A53_PART4 }, .flags = M2V_PARAM, .unit = "cc_format" }, | ||
2677 | { "scte20", "pick SCTE-20 CC substream", 0, AV_OPT_TYPE_CONST, | ||
2678 | { .i64 = CC_FORMAT_SCTE20 }, .flags = M2V_PARAM, .unit = "cc_format" }, | ||
2679 | { "dvd", "pick DVD CC substream", 0, AV_OPT_TYPE_CONST, | ||
2680 | { .i64 = CC_FORMAT_DVD }, .flags = M2V_PARAM, .unit = "cc_format" }, | ||
2681 | { "dish", "pick Dish Network CC substream", 0, AV_OPT_TYPE_CONST, | ||
2682 | { .i64 = CC_FORMAT_DISH }, .flags = M2V_PARAM, .unit = "cc_format" }, | ||
2683 | { NULL } | ||
2684 | }; | ||
2685 | |||
2686 | static const AVClass mpeg2video_class = { | ||
2687 | .class_name = "MPEG-2 video", | ||
2688 | .item_name = av_default_item_name, | ||
2689 | .option = mpeg2video_options, | ||
2690 | .version = LIBAVUTIL_VERSION_INT, | ||
2691 | .category = AV_CLASS_CATEGORY_DECODER, | ||
2692 | }; | ||
2693 | |||
2694 | const FFCodec ff_mpeg2video_decoder = { | ||
2695 | .p.name = "mpeg2video", | ||
2696 | CODEC_LONG_NAME("MPEG-2 video"), | ||
2697 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
2698 | .p.id = AV_CODEC_ID_MPEG2VIDEO, | ||
2699 | .p.priv_class = &mpeg2video_class, | ||
2700 | .priv_data_size = sizeof(Mpeg1Context), | ||
2701 | .init = mpeg_decode_init, | ||
2702 | .close = mpeg_decode_end, | ||
2703 | FF_CODEC_DECODE_CB(mpeg_decode_frame), | ||
2704 | .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 | | ||
2705 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, | ||
2706 | .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM, | ||
2707 | .flush = flush, | ||
2708 | .p.max_lowres = 3, | ||
2709 | .p.profiles = NULL_IF_CONFIG_SMALL(ff_mpeg2_video_profiles), | ||
2710 | .hw_configs = (const AVCodecHWConfigInternal *const []) { | ||
2711 | #if CONFIG_MPEG2_DXVA2_HWACCEL | ||
2712 | HWACCEL_DXVA2(mpeg2), | ||
2713 | #endif | ||
2714 | #if CONFIG_MPEG2_D3D11VA_HWACCEL | ||
2715 | HWACCEL_D3D11VA(mpeg2), | ||
2716 | #endif | ||
2717 | #if CONFIG_MPEG2_D3D11VA2_HWACCEL | ||
2718 | HWACCEL_D3D11VA2(mpeg2), | ||
2719 | #endif | ||
2720 | #if CONFIG_MPEG2_D3D12VA_HWACCEL | ||
2721 | HWACCEL_D3D12VA(mpeg2), | ||
2722 | #endif | ||
2723 | #if CONFIG_MPEG2_NVDEC_HWACCEL | ||
2724 | HWACCEL_NVDEC(mpeg2), | ||
2725 | #endif | ||
2726 | #if CONFIG_MPEG2_VAAPI_HWACCEL | ||
2727 | HWACCEL_VAAPI(mpeg2), | ||
2728 | #endif | ||
2729 | #if CONFIG_MPEG2_VDPAU_HWACCEL | ||
2730 | HWACCEL_VDPAU(mpeg2), | ||
2731 | #endif | ||
2732 | #if CONFIG_MPEG2_VIDEOTOOLBOX_HWACCEL | ||
2733 | HWACCEL_VIDEOTOOLBOX(mpeg2), | ||
2734 | #endif | ||
2735 | NULL | ||
2736 | }, | ||
2737 | }; | ||
2738 | |||
2739 | //legacy decoder | ||
2740 | const FFCodec ff_mpegvideo_decoder = { | ||
2741 | .p.name = "mpegvideo", | ||
2742 | CODEC_LONG_NAME("MPEG-1 video"), | ||
2743 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
2744 | .p.id = AV_CODEC_ID_MPEG2VIDEO, | ||
2745 | .priv_data_size = sizeof(Mpeg1Context), | ||
2746 | .init = mpeg_decode_init, | ||
2747 | .close = mpeg_decode_end, | ||
2748 | FF_CODEC_DECODE_CB(mpeg_decode_frame), | ||
2749 | .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND | AV_CODEC_CAP_DR1 | | ||
2750 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS, | ||
2751 | .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM, | ||
2752 | .flush = flush, | ||
2753 | .p.max_lowres = 3, | ||
2754 | }; | ||
2755 | |||
2756 | typedef struct IPUContext { | ||
2757 | Mpeg12SliceContext m; | ||
2758 | |||
2759 | int flags; | ||
2760 | } IPUContext; | ||
2761 | |||
2762 | ✗ | static int ipu_decode_frame(AVCodecContext *avctx, AVFrame *frame, | |
2763 | int *got_frame, AVPacket *avpkt) | ||
2764 | { | ||
2765 | ✗ | IPUContext *s = avctx->priv_data; | |
2766 | ✗ | MPVContext *const m = &s->m.c; | |
2767 | ✗ | GetBitContext *const gb = &s->m.gb; | |
2768 | ✗ | int16_t (*const block)[64] = s->m.block; | |
2769 | int ret; | ||
2770 | |||
2771 | // Check for minimal intra MB size (considering mb header, luma & chroma dc VLC, ac EOB VLC) | ||
2772 | ✗ | if (avpkt->size*8LL < (avctx->width+15)/16 * ((avctx->height+15)/16) * (2LL + 3*4 + 2*2 + 2*6)) | |
2773 | ✗ | return AVERROR_INVALIDDATA; | |
2774 | |||
2775 | ✗ | ret = ff_get_buffer(avctx, frame, 0); | |
2776 | ✗ | if (ret < 0) | |
2777 | ✗ | return ret; | |
2778 | |||
2779 | ✗ | ret = init_get_bits8(gb, avpkt->data, avpkt->size); | |
2780 | ✗ | if (ret < 0) | |
2781 | ✗ | return ret; | |
2782 | |||
2783 | ✗ | s->flags = get_bits(gb, 8); | |
2784 | ✗ | m->intra_dc_precision = s->flags & 3; | |
2785 | ✗ | m->q_scale_type = !!(s->flags & 0x40); | |
2786 | ✗ | m->intra_vlc_format = !!(s->flags & 0x20); | |
2787 | ✗ | m->alternate_scan = !!(s->flags & 0x10); | |
2788 | |||
2789 | ✗ | ff_permute_scantable(m->intra_scantable.permutated, | |
2790 | ✗ | s->flags & 0x10 ? ff_alternate_vertical_scan : ff_zigzag_direct, | |
2791 | ✗ | m->idsp.idct_permutation); | |
2792 | |||
2793 | ✗ | m->last_dc[0] = m->last_dc[1] = m->last_dc[2] = 1 << (7 + (s->flags & 3)); | |
2794 | ✗ | m->qscale = 1; | |
2795 | |||
2796 | ✗ | for (int y = 0; y < avctx->height; y += 16) { | |
2797 | int intraquant; | ||
2798 | |||
2799 | ✗ | for (int x = 0; x < avctx->width; x += 16) { | |
2800 | ✗ | if (x || y) { | |
2801 | ✗ | if (!get_bits1(gb)) | |
2802 | ✗ | return AVERROR_INVALIDDATA; | |
2803 | } | ||
2804 | ✗ | if (get_bits1(gb)) { | |
2805 | ✗ | intraquant = 0; | |
2806 | } else { | ||
2807 | ✗ | if (!get_bits1(gb)) | |
2808 | ✗ | return AVERROR_INVALIDDATA; | |
2809 | ✗ | intraquant = 1; | |
2810 | } | ||
2811 | |||
2812 | ✗ | if (s->flags & 4) | |
2813 | ✗ | skip_bits1(gb); | |
2814 | |||
2815 | ✗ | if (intraquant) | |
2816 | ✗ | m->qscale = mpeg_get_qscale(gb, m->q_scale_type); | |
2817 | |||
2818 | ✗ | memset(block, 0, 6 * sizeof(*block)); | |
2819 | |||
2820 | ✗ | for (int n = 0; n < 6; n++) { | |
2821 | ✗ | if (s->flags & 0x80) { | |
2822 | ✗ | ret = ff_mpeg1_decode_block_intra(gb, | |
2823 | ✗ | m->intra_matrix, | |
2824 | ✗ | m->intra_scantable.permutated, | |
2825 | ✗ | m->last_dc, block[n], | |
2826 | n, m->qscale); | ||
2827 | } else { | ||
2828 | ✗ | ret = mpeg2_decode_block_intra(&s->m, block[n], n); | |
2829 | } | ||
2830 | |||
2831 | ✗ | if (ret < 0) | |
2832 | ✗ | return ret; | |
2833 | } | ||
2834 | |||
2835 | ✗ | m->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x, | |
2836 | ✗ | frame->linesize[0], block[0]); | |
2837 | ✗ | m->idsp.idct_put(frame->data[0] + y * frame->linesize[0] + x + 8, | |
2838 | ✗ | frame->linesize[0], block[1]); | |
2839 | ✗ | m->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x, | |
2840 | ✗ | frame->linesize[0], block[2]); | |
2841 | ✗ | m->idsp.idct_put(frame->data[0] + (y + 8) * frame->linesize[0] + x + 8, | |
2842 | ✗ | frame->linesize[0], block[3]); | |
2843 | ✗ | m->idsp.idct_put(frame->data[1] + (y >> 1) * frame->linesize[1] + (x >> 1), | |
2844 | ✗ | frame->linesize[1], block[4]); | |
2845 | ✗ | m->idsp.idct_put(frame->data[2] + (y >> 1) * frame->linesize[2] + (x >> 1), | |
2846 | ✗ | frame->linesize[2], block[5]); | |
2847 | } | ||
2848 | } | ||
2849 | |||
2850 | ✗ | align_get_bits(gb); | |
2851 | ✗ | if (get_bits_left(gb) != 32) | |
2852 | ✗ | return AVERROR_INVALIDDATA; | |
2853 | |||
2854 | ✗ | *got_frame = 1; | |
2855 | |||
2856 | ✗ | return avpkt->size; | |
2857 | } | ||
2858 | |||
2859 | ✗ | static av_cold int ipu_decode_init(AVCodecContext *avctx) | |
2860 | { | ||
2861 | ✗ | IPUContext *s = avctx->priv_data; | |
2862 | ✗ | MPVContext *const m = &s->m.c; | |
2863 | |||
2864 | ✗ | avctx->pix_fmt = AV_PIX_FMT_YUV420P; | |
2865 | ✗ | m->avctx = avctx; | |
2866 | |||
2867 | ✗ | ff_idctdsp_init(&m->idsp, avctx); | |
2868 | ✗ | ff_mpeg12_init_vlcs(); | |
2869 | |||
2870 | ✗ | for (int i = 0; i < 64; i++) { | |
2871 | ✗ | int j = m->idsp.idct_permutation[i]; | |
2872 | ✗ | int v = ff_mpeg1_default_intra_matrix[i]; | |
2873 | ✗ | m->intra_matrix[j] = v; | |
2874 | ✗ | m->chroma_intra_matrix[j] = v; | |
2875 | } | ||
2876 | |||
2877 | ✗ | return 0; | |
2878 | } | ||
2879 | |||
2880 | const FFCodec ff_ipu_decoder = { | ||
2881 | .p.name = "ipu", | ||
2882 | CODEC_LONG_NAME("IPU Video"), | ||
2883 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
2884 | .p.id = AV_CODEC_ID_IPU, | ||
2885 | .priv_data_size = sizeof(IPUContext), | ||
2886 | .init = ipu_decode_init, | ||
2887 | FF_CODEC_DECODE_CB(ipu_decode_frame), | ||
2888 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
2889 | }; | ||
2890 |