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1 | /* | ||
2 | * DHAV demuxer | ||
3 | * | ||
4 | * Copyright (c) 2018 Paul B Mahol | ||
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 | #include <time.h> | ||
24 | |||
25 | #include "libavutil/mem.h" | ||
26 | #include "libavutil/parseutils.h" | ||
27 | #include "avio_internal.h" | ||
28 | #include "avformat.h" | ||
29 | #include "demux.h" | ||
30 | #include "internal.h" | ||
31 | |||
32 | typedef struct DHAVContext { | ||
33 | unsigned type; | ||
34 | unsigned subtype; | ||
35 | unsigned channel; | ||
36 | unsigned frame_subnumber; | ||
37 | unsigned frame_number; | ||
38 | unsigned date; | ||
39 | unsigned timestamp; | ||
40 | int width, height; | ||
41 | int video_codec; | ||
42 | int frame_rate; | ||
43 | int audio_channels; | ||
44 | int audio_codec; | ||
45 | int sample_rate; | ||
46 | int64_t last_good_pos; | ||
47 | int64_t duration; | ||
48 | |||
49 | int video_stream_index; | ||
50 | int audio_stream_index; | ||
51 | } DHAVContext; | ||
52 | |||
53 | typedef struct DHAVStream { | ||
54 | int64_t last_frame_number; | ||
55 | int64_t last_timestamp; | ||
56 | int64_t last_time; | ||
57 | int64_t pts; | ||
58 | } DHAVStream; | ||
59 | |||
60 | 7162 | static int dhav_probe(const AVProbeData *p) | |
61 | { | ||
62 |
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7162 | if (!memcmp(p->buf, "DAHUA", 5)) |
63 | ✗ | return AVPROBE_SCORE_MAX; | |
64 | |||
65 |
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7162 | if (memcmp(p->buf, "DHAV", 4)) |
66 | 7162 | return 0; | |
67 | |||
68 | ✗ | if (p->buf[4] == 0xf0 || | |
69 | ✗ | p->buf[4] == 0xf1 || | |
70 | ✗ | p->buf[4] == 0xfc || | |
71 | ✗ | p->buf[4] == 0xfd) | |
72 | ✗ | return AVPROBE_SCORE_MAX; | |
73 | ✗ | return 0; | |
74 | } | ||
75 | |||
76 | static const uint32_t sample_rates[] = { | ||
77 | 8000, 4000, 8000, 11025, 16000, | ||
78 | 20000, 22050, 32000, 44100, 48000, | ||
79 | 96000, 192000, 64000, | ||
80 | }; | ||
81 | |||
82 | ✗ | static int parse_ext(AVFormatContext *s, int length) | |
83 | { | ||
84 | ✗ | DHAVContext *dhav = s->priv_data; | |
85 | ✗ | int64_t ret = 0; | |
86 | |||
87 | ✗ | while (length > 0) { | |
88 | ✗ | int type = avio_r8(s->pb); | |
89 | int index; | ||
90 | |||
91 | ✗ | switch (type) { | |
92 | ✗ | case 0x80: | |
93 | ✗ | ret = avio_skip(s->pb, 1); | |
94 | ✗ | dhav->width = 8 * avio_r8(s->pb); | |
95 | ✗ | dhav->height = 8 * avio_r8(s->pb); | |
96 | ✗ | length -= 4; | |
97 | ✗ | break; | |
98 | ✗ | case 0x81: | |
99 | ✗ | ret = avio_skip(s->pb, 1); | |
100 | ✗ | dhav->video_codec = avio_r8(s->pb); | |
101 | ✗ | dhav->frame_rate = avio_r8(s->pb); | |
102 | ✗ | length -= 4; | |
103 | ✗ | break; | |
104 | ✗ | case 0x82: | |
105 | ✗ | ret = avio_skip(s->pb, 3); | |
106 | ✗ | dhav->width = avio_rl16(s->pb); | |
107 | ✗ | dhav->height = avio_rl16(s->pb); | |
108 | ✗ | length -= 8; | |
109 | ✗ | break; | |
110 | ✗ | case 0x83: | |
111 | ✗ | dhav->audio_channels = avio_r8(s->pb); | |
112 | ✗ | dhav->audio_codec = avio_r8(s->pb); | |
113 | ✗ | index = avio_r8(s->pb); | |
114 | ✗ | if (index < FF_ARRAY_ELEMS(sample_rates)) { | |
115 | ✗ | dhav->sample_rate = sample_rates[index]; | |
116 | } else { | ||
117 | ✗ | dhav->sample_rate = 8000; | |
118 | } | ||
119 | ✗ | length -= 4; | |
120 | ✗ | break; | |
121 | ✗ | case 0x88: | |
122 | ✗ | ret = avio_skip(s->pb, 7); | |
123 | ✗ | length -= 8; | |
124 | ✗ | break; | |
125 | ✗ | case 0x8c: | |
126 | ✗ | ret = avio_skip(s->pb, 1); | |
127 | ✗ | dhav->audio_channels = avio_r8(s->pb); | |
128 | ✗ | dhav->audio_codec = avio_r8(s->pb); | |
129 | ✗ | index = avio_r8(s->pb); | |
130 | ✗ | if (index < FF_ARRAY_ELEMS(sample_rates)) { | |
131 | ✗ | dhav->sample_rate = sample_rates[index]; | |
132 | } else { | ||
133 | ✗ | dhav->sample_rate = 8000; | |
134 | } | ||
135 | ✗ | ret = avio_skip(s->pb, 3); | |
136 | ✗ | length -= 8; | |
137 | ✗ | break; | |
138 | ✗ | case 0x91: | |
139 | case 0x92: | ||
140 | case 0x93: | ||
141 | case 0x95: | ||
142 | case 0x9a: | ||
143 | case 0x9b: // sample aspect ratio | ||
144 | case 0xb3: | ||
145 | ✗ | ret = avio_skip(s->pb, 7); | |
146 | ✗ | length -= 8; | |
147 | ✗ | break; | |
148 | ✗ | case 0x84: | |
149 | case 0x85: | ||
150 | case 0x8b: | ||
151 | case 0x94: | ||
152 | case 0x96: | ||
153 | case 0xa0: | ||
154 | case 0xb2: | ||
155 | case 0xb4: | ||
156 | ✗ | ret = avio_skip(s->pb, 3); | |
157 | ✗ | length -= 4; | |
158 | ✗ | break; | |
159 | ✗ | default: | |
160 | ✗ | av_log(s, AV_LOG_INFO, "Unknown type: %X, skipping rest of header.\n", type); | |
161 | ✗ | ret = avio_skip(s->pb, length - 1); | |
162 | ✗ | length = 0; | |
163 | } | ||
164 | |||
165 | ✗ | if (ret < 0) | |
166 | ✗ | return ret; | |
167 | } | ||
168 | |||
169 | ✗ | return 0; | |
170 | } | ||
171 | |||
172 | ✗ | static int read_chunk(AVFormatContext *s) | |
173 | { | ||
174 | ✗ | DHAVContext *dhav = s->priv_data; | |
175 | int frame_length, ext_length; | ||
176 | int64_t start, end, ret; | ||
177 | |||
178 | ✗ | if (avio_feof(s->pb)) | |
179 | ✗ | return AVERROR_EOF; | |
180 | |||
181 | ✗ | while (avio_r8(s->pb) != 'D' || avio_r8(s->pb) != 'H' || avio_r8(s->pb) != 'A' || avio_r8(s->pb) != 'V') { | |
182 | ✗ | if (avio_feof(s->pb)) | |
183 | ✗ | return AVERROR_EOF; | |
184 | } | ||
185 | |||
186 | ✗ | start = avio_tell(s->pb) - 4; | |
187 | ✗ | dhav->last_good_pos = start; | |
188 | ✗ | dhav->type = avio_r8(s->pb); | |
189 | ✗ | dhav->subtype = avio_r8(s->pb); | |
190 | ✗ | dhav->channel = avio_r8(s->pb); | |
191 | ✗ | dhav->frame_subnumber = avio_r8(s->pb); | |
192 | ✗ | dhav->frame_number = avio_rl32(s->pb); | |
193 | ✗ | frame_length = avio_rl32(s->pb); | |
194 | ✗ | dhav->date = avio_rl32(s->pb); | |
195 | |||
196 | ✗ | if (frame_length < 24) | |
197 | ✗ | return AVERROR_INVALIDDATA; | |
198 | ✗ | if (dhav->type == 0xf1) { | |
199 | ✗ | ret = avio_skip(s->pb, frame_length - 20); | |
200 | ✗ | return ret < 0 ? ret : 0; | |
201 | } | ||
202 | |||
203 | ✗ | dhav->timestamp = avio_rl16(s->pb); | |
204 | ✗ | ext_length = avio_r8(s->pb); | |
205 | ✗ | avio_skip(s->pb, 1); // checksum | |
206 | |||
207 | ✗ | ret = parse_ext(s, ext_length); | |
208 | ✗ | if (ret < 0) | |
209 | ✗ | return ret; | |
210 | |||
211 | ✗ | end = avio_tell(s->pb); | |
212 | |||
213 | ✗ | return frame_length - 8 - (end - start); | |
214 | } | ||
215 | |||
216 | ✗ | static void get_timeinfo(unsigned date, struct tm *timeinfo) | |
217 | { | ||
218 | int year, month, day, hour, min, sec; | ||
219 | |||
220 | ✗ | sec = date & 0x3F; | |
221 | ✗ | min = (date >> 6) & 0x3F; | |
222 | ✗ | hour = (date >> 12) & 0x1F; | |
223 | ✗ | day = (date >> 17) & 0x1F; | |
224 | ✗ | month = (date >> 22) & 0x0F; | |
225 | ✗ | year = ((date >> 26) & 0x3F) + 2000; | |
226 | |||
227 | ✗ | timeinfo->tm_year = year - 1900; | |
228 | ✗ | timeinfo->tm_mon = month - 1; | |
229 | ✗ | timeinfo->tm_mday = day; | |
230 | ✗ | timeinfo->tm_hour = hour; | |
231 | ✗ | timeinfo->tm_min = min; | |
232 | ✗ | timeinfo->tm_sec = sec; | |
233 | ✗ | } | |
234 | |||
235 | ✗ | static int64_t get_duration(AVFormatContext *s) | |
236 | { | ||
237 | ✗ | DHAVContext *dhav = s->priv_data; | |
238 | ✗ | int64_t start_pos = avio_tell(s->pb); | |
239 | ✗ | int64_t start = 0, end = 0; | |
240 | struct tm timeinfo; | ||
241 | ✗ | int max_interations = 100000; | |
242 | |||
243 | ✗ | if (!s->pb->seekable) | |
244 | ✗ | return 0; | |
245 | |||
246 | ✗ | avio_seek(s->pb, avio_size(s->pb) - 8, SEEK_SET); | |
247 | ✗ | while (avio_tell(s->pb) > 12 && max_interations--) { | |
248 | ✗ | if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) { | |
249 | ✗ | int64_t seek_back = avio_rl32(s->pb); | |
250 | |||
251 | ✗ | avio_seek(s->pb, -seek_back, SEEK_CUR); | |
252 | ✗ | read_chunk(s); | |
253 | ✗ | get_timeinfo(dhav->date, &timeinfo); | |
254 | ✗ | end = av_timegm(&timeinfo) * 1000LL; | |
255 | ✗ | break; | |
256 | } else { | ||
257 | ✗ | avio_seek(s->pb, -12, SEEK_CUR); | |
258 | } | ||
259 | } | ||
260 | |||
261 | ✗ | avio_seek(s->pb, start_pos, SEEK_SET); | |
262 | |||
263 | ✗ | read_chunk(s); | |
264 | ✗ | get_timeinfo(dhav->date, &timeinfo); | |
265 | ✗ | start = av_timegm(&timeinfo) * 1000LL; | |
266 | |||
267 | ✗ | avio_seek(s->pb, start_pos, SEEK_SET); | |
268 | |||
269 | ✗ | return end - start; | |
270 | } | ||
271 | |||
272 | ✗ | static int dhav_read_header(AVFormatContext *s) | |
273 | { | ||
274 | ✗ | DHAVContext *dhav = s->priv_data; | |
275 | uint8_t signature[5]; | ||
276 | ✗ | int ret = ffio_ensure_seekback(s->pb, 5); | |
277 | |||
278 | ✗ | if (ret < 0) | |
279 | ✗ | return ret; | |
280 | |||
281 | ✗ | ret = ffio_read_size(s->pb, signature, sizeof(signature)); | |
282 | ✗ | if (ret < 0) | |
283 | ✗ | return ret; | |
284 | ✗ | if (!memcmp(signature, "DAHUA", 5)) { | |
285 | ✗ | avio_skip(s->pb, 0x400 - 5); | |
286 | ✗ | dhav->last_good_pos = avio_tell(s->pb); | |
287 | } else { | ||
288 | ✗ | if (!memcmp(signature, "DHAV", 4)) { | |
289 | ✗ | avio_seek(s->pb, -5, SEEK_CUR); | |
290 | ✗ | dhav->last_good_pos = avio_tell(s->pb); | |
291 | ✗ | } else if (s->pb->seekable) { | |
292 | ✗ | avio_seek(s->pb, avio_size(s->pb) - 8, SEEK_SET); | |
293 | ✗ | while (avio_rl32(s->pb) == MKTAG('d','h','a','v')) { | |
294 | int seek_back; | ||
295 | |||
296 | ✗ | seek_back = avio_rl32(s->pb) + 8; | |
297 | ✗ | if (seek_back < 9) | |
298 | ✗ | break; | |
299 | ✗ | dhav->last_good_pos = avio_tell(s->pb); | |
300 | ✗ | avio_seek(s->pb, -seek_back, SEEK_CUR); | |
301 | } | ||
302 | ✗ | avio_seek(s->pb, dhav->last_good_pos, SEEK_SET); | |
303 | } | ||
304 | } | ||
305 | |||
306 | ✗ | dhav->duration = get_duration(s); | |
307 | ✗ | dhav->last_good_pos = avio_tell(s->pb); | |
308 | ✗ | s->ctx_flags |= AVFMTCTX_NOHEADER; | |
309 | ✗ | dhav->video_stream_index = -1; | |
310 | ✗ | dhav->audio_stream_index = -1; | |
311 | |||
312 | ✗ | return 0; | |
313 | } | ||
314 | |||
315 | ✗ | static int64_t get_pts(AVFormatContext *s, int stream_index) | |
316 | { | ||
317 | ✗ | DHAVStream *dst = s->streams[stream_index]->priv_data; | |
318 | ✗ | DHAVContext *dhav = s->priv_data; | |
319 | struct tm timeinfo; | ||
320 | time_t t; | ||
321 | |||
322 | ✗ | get_timeinfo(dhav->date, &timeinfo); | |
323 | |||
324 | ✗ | t = av_timegm(&timeinfo); | |
325 | ✗ | if (dst->last_time == t) { | |
326 | ✗ | int64_t diff = dhav->timestamp - dst->last_timestamp; | |
327 | |||
328 | ✗ | if (diff < 0) | |
329 | ✗ | diff += 65535; | |
330 | ✗ | if (diff == 0 && dhav->frame_rate) | |
331 | ✗ | diff = av_rescale(dhav->frame_number - dst->last_frame_number, 1000, dhav->frame_rate); | |
332 | ✗ | dst->pts += diff; | |
333 | } else { | ||
334 | ✗ | dst->pts = t * 1000LL; | |
335 | } | ||
336 | |||
337 | ✗ | dst->last_time = t; | |
338 | ✗ | dst->last_timestamp = dhav->timestamp; | |
339 | ✗ | dst->last_frame_number = dhav->frame_number; | |
340 | |||
341 | ✗ | return dst->pts; | |
342 | } | ||
343 | |||
344 | ✗ | static int dhav_read_packet(AVFormatContext *s, AVPacket *pkt) | |
345 | { | ||
346 | ✗ | DHAVContext *dhav = s->priv_data; | |
347 | int size, ret, stream_index; | ||
348 | |||
349 | ✗ | retry: | |
350 | ✗ | while ((ret = read_chunk(s)) == 0) | |
351 | ; | ||
352 | |||
353 | ✗ | if (ret < 0) | |
354 | ✗ | return ret; | |
355 | |||
356 | ✗ | if (dhav->type == 0xfd && dhav->video_stream_index == -1) { | |
357 | ✗ | AVStream *st = avformat_new_stream(s, NULL); | |
358 | DHAVStream *dst; | ||
359 | |||
360 | ✗ | if (!st) | |
361 | ✗ | return AVERROR(ENOMEM); | |
362 | |||
363 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
364 | ✗ | switch (dhav->video_codec) { | |
365 | ✗ | case 0x1: st->codecpar->codec_id = AV_CODEC_ID_MPEG4; break; | |
366 | ✗ | case 0x3: st->codecpar->codec_id = AV_CODEC_ID_MJPEG; break; | |
367 | ✗ | case 0x2: | |
368 | case 0x4: | ||
369 | ✗ | case 0x8: st->codecpar->codec_id = AV_CODEC_ID_H264; break; | |
370 | ✗ | case 0xc: st->codecpar->codec_id = AV_CODEC_ID_HEVC; break; | |
371 | ✗ | default: avpriv_request_sample(s, "Unknown video codec %X", dhav->video_codec); | |
372 | } | ||
373 | ✗ | st->duration = dhav->duration; | |
374 | ✗ | st->codecpar->width = dhav->width; | |
375 | ✗ | st->codecpar->height = dhav->height; | |
376 | ✗ | st->avg_frame_rate.num = dhav->frame_rate; | |
377 | ✗ | st->avg_frame_rate.den = 1; | |
378 | ✗ | st->priv_data = dst = av_mallocz(sizeof(DHAVStream)); | |
379 | ✗ | if (!st->priv_data) | |
380 | ✗ | return AVERROR(ENOMEM); | |
381 | ✗ | dst->last_time = AV_NOPTS_VALUE; | |
382 | ✗ | dhav->video_stream_index = st->index; | |
383 | |||
384 | ✗ | avpriv_set_pts_info(st, 64, 1, 1000); | |
385 | ✗ | } else if (dhav->type == 0xf0 && dhav->audio_stream_index == -1) { | |
386 | ✗ | AVStream *st = avformat_new_stream(s, NULL); | |
387 | DHAVStream *dst; | ||
388 | |||
389 | ✗ | if (!st) | |
390 | ✗ | return AVERROR(ENOMEM); | |
391 | |||
392 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; | |
393 | ✗ | switch (dhav->audio_codec) { | |
394 | ✗ | case 0x07: st->codecpar->codec_id = AV_CODEC_ID_PCM_S8; break; | |
395 | ✗ | case 0x0c: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; break; | |
396 | ✗ | case 0x10: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; break; | |
397 | ✗ | case 0x0a: st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW; break; | |
398 | ✗ | case 0x16: st->codecpar->codec_id = AV_CODEC_ID_PCM_MULAW; break; | |
399 | ✗ | case 0x0e: st->codecpar->codec_id = AV_CODEC_ID_PCM_ALAW; break; | |
400 | ✗ | case 0x1a: st->codecpar->codec_id = AV_CODEC_ID_AAC; break; | |
401 | ✗ | case 0x1f: st->codecpar->codec_id = AV_CODEC_ID_MP2; break; | |
402 | ✗ | case 0x21: st->codecpar->codec_id = AV_CODEC_ID_MP3; break; | |
403 | ✗ | case 0x0d: st->codecpar->codec_id = AV_CODEC_ID_ADPCM_MS; break; | |
404 | ✗ | default: avpriv_request_sample(s, "Unknown audio codec %X", dhav->audio_codec); | |
405 | } | ||
406 | ✗ | st->duration = dhav->duration; | |
407 | ✗ | st->codecpar->ch_layout.nb_channels = dhav->audio_channels; | |
408 | ✗ | st->codecpar->sample_rate = dhav->sample_rate; | |
409 | ✗ | st->priv_data = dst = av_mallocz(sizeof(DHAVStream)); | |
410 | ✗ | if (!st->priv_data) | |
411 | ✗ | return AVERROR(ENOMEM); | |
412 | ✗ | dst->last_time = AV_NOPTS_VALUE; | |
413 | ✗ | dhav->audio_stream_index = st->index; | |
414 | |||
415 | ✗ | avpriv_set_pts_info(st, 64, 1, 1000); | |
416 | } | ||
417 | |||
418 | ✗ | stream_index = dhav->type == 0xf0 ? dhav->audio_stream_index : dhav->video_stream_index; | |
419 | ✗ | if (stream_index < 0) { | |
420 | ✗ | avio_skip(s->pb, ret); | |
421 | ✗ | if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) | |
422 | ✗ | avio_skip(s->pb, 4); | |
423 | ✗ | goto retry; | |
424 | } | ||
425 | |||
426 | ✗ | size = ret; | |
427 | ✗ | ret = av_get_packet(s->pb, pkt, size); | |
428 | ✗ | if (ret < 0) | |
429 | ✗ | return ret; | |
430 | ✗ | pkt->stream_index = stream_index; | |
431 | ✗ | if (dhav->type != 0xfc) | |
432 | ✗ | pkt->flags |= AV_PKT_FLAG_KEY; | |
433 | ✗ | pkt->duration = 1; | |
434 | ✗ | if (pkt->stream_index >= 0) | |
435 | ✗ | pkt->pts = get_pts(s, pkt->stream_index); | |
436 | ✗ | pkt->pos = dhav->last_good_pos; | |
437 | ✗ | if (avio_rl32(s->pb) == MKTAG('d','h','a','v')) | |
438 | ✗ | avio_skip(s->pb, 4); | |
439 | |||
440 | ✗ | return ret; | |
441 | } | ||
442 | |||
443 | ✗ | static int dhav_read_seek(AVFormatContext *s, int stream_index, | |
444 | int64_t timestamp, int flags) | ||
445 | { | ||
446 | ✗ | DHAVContext *dhav = s->priv_data; | |
447 | ✗ | AVStream *st = s->streams[stream_index]; | |
448 | ✗ | FFStream *const sti = ffstream(st); | |
449 | ✗ | int index = av_index_search_timestamp(st, timestamp, flags); | |
450 | int64_t pts; | ||
451 | |||
452 | ✗ | if (index < 0) | |
453 | ✗ | return -1; | |
454 | ✗ | pts = sti->index_entries[index].timestamp; | |
455 | ✗ | if (pts < timestamp) | |
456 | ✗ | return AVERROR(EAGAIN); | |
457 | ✗ | if (avio_seek(s->pb, sti->index_entries[index].pos, SEEK_SET) < 0) | |
458 | ✗ | return -1; | |
459 | |||
460 | ✗ | for (int n = 0; n < s->nb_streams; n++) { | |
461 | ✗ | AVStream *st = s->streams[n]; | |
462 | ✗ | DHAVStream *dst = st->priv_data; | |
463 | |||
464 | ✗ | dst->pts = pts; | |
465 | ✗ | dst->last_time = AV_NOPTS_VALUE; | |
466 | } | ||
467 | ✗ | dhav->last_good_pos = avio_tell(s->pb); | |
468 | |||
469 | ✗ | return 0; | |
470 | } | ||
471 | |||
472 | const FFInputFormat ff_dhav_demuxer = { | ||
473 | .p.name = "dhav", | ||
474 | .p.long_name = NULL_IF_CONFIG_SMALL("Video DAV"), | ||
475 | .p.extensions = "dav", | ||
476 | .p.flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK | AVFMT_TS_DISCONT | AVFMT_TS_NONSTRICT | AVFMT_SEEK_TO_PTS, | ||
477 | .priv_data_size = sizeof(DHAVContext), | ||
478 | .read_probe = dhav_probe, | ||
479 | .read_header = dhav_read_header, | ||
480 | .read_packet = dhav_read_packet, | ||
481 | .read_seek = dhav_read_seek, | ||
482 | }; | ||
483 |