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2ba45a60 DM |
1 | /* |
2 | * GXF muxer. | |
3 | * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include "libavutil/avassert.h" | |
23 | #include "libavutil/intfloat.h" | |
24 | #include "libavutil/opt.h" | |
25 | #include "libavutil/mathematics.h" | |
26 | #include "libavutil/timecode.h" | |
27 | #include "avformat.h" | |
28 | #include "internal.h" | |
29 | #include "gxf.h" | |
30 | #include "audiointerleave.h" | |
31 | ||
32 | #define GXF_AUDIO_PACKET_SIZE 65536 | |
33 | ||
34 | #define GXF_TIMECODE(c, d, h, m, s, f) \ | |
35 | ((c) << 30 | (d) << 29 | (h) << 24 | (m) << 16 | (s) << 8 | (f)) | |
36 | ||
37 | typedef struct GXFTimecode{ | |
38 | int hh; | |
39 | int mm; | |
40 | int ss; | |
41 | int ff; | |
42 | int color; | |
43 | int drop; | |
44 | } GXFTimecode; | |
45 | ||
46 | typedef struct GXFStreamContext { | |
47 | AudioInterleaveContext aic; | |
48 | uint32_t track_type; | |
49 | uint32_t sample_size; | |
50 | uint32_t sample_rate; | |
51 | uint16_t media_type; | |
52 | uint16_t media_info; | |
53 | int frame_rate_index; | |
54 | int lines_index; | |
55 | int fields; | |
56 | int iframes; | |
57 | int pframes; | |
58 | int bframes; | |
59 | int p_per_gop; | |
60 | int b_per_i_or_p; ///< number of B frames per I frame or P frame | |
61 | int first_gop_closed; | |
62 | unsigned order; ///< interleaving order | |
63 | } GXFStreamContext; | |
64 | ||
65 | typedef struct GXFContext { | |
66 | AVClass *av_class; | |
67 | uint32_t nb_fields; | |
68 | uint16_t audio_tracks; | |
69 | uint16_t mpeg_tracks; | |
70 | int64_t creation_time; | |
71 | uint32_t umf_start_offset; | |
72 | uint32_t umf_track_offset; | |
73 | uint32_t umf_media_offset; | |
74 | uint32_t umf_length; | |
75 | uint16_t umf_track_size; | |
76 | uint16_t umf_media_size; | |
77 | AVRational time_base; | |
78 | int flags; | |
79 | GXFStreamContext timecode_track; | |
80 | unsigned *flt_entries; ///< offsets of packets /1024, starts after 2nd video field | |
81 | unsigned flt_entries_nb; | |
82 | uint64_t *map_offsets; ///< offset of map packets | |
83 | unsigned map_offsets_nb; | |
84 | unsigned packet_count; | |
85 | GXFTimecode tc; | |
86 | } GXFContext; | |
87 | ||
88 | static const struct { | |
89 | int height, index; | |
90 | } gxf_lines_tab[] = { | |
91 | { 480, 1 }, /* NTSC */ | |
92 | { 512, 1 }, /* NTSC + VBI */ | |
93 | { 576, 2 }, /* PAL */ | |
94 | { 608, 2 }, /* PAL + VBI */ | |
95 | { 1080, 4 }, | |
96 | { 720, 6 }, | |
97 | }; | |
98 | ||
99 | static const AVCodecTag gxf_media_types[] = { | |
100 | { AV_CODEC_ID_MJPEG , 3 }, /* NTSC */ | |
101 | { AV_CODEC_ID_MJPEG , 4 }, /* PAL */ | |
102 | { AV_CODEC_ID_PCM_S24LE , 9 }, | |
103 | { AV_CODEC_ID_PCM_S16LE , 10 }, | |
104 | { AV_CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */ | |
105 | { AV_CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */ | |
106 | { AV_CODEC_ID_DVVIDEO , 13 }, /* NTSC */ | |
107 | { AV_CODEC_ID_DVVIDEO , 14 }, /* PAL */ | |
108 | { AV_CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */ | |
109 | { AV_CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */ | |
110 | { AV_CODEC_ID_AC3 , 17 }, | |
111 | //{ AV_CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */ | |
112 | { AV_CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */ | |
113 | { AV_CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */ | |
114 | { AV_CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */ | |
115 | { AV_CODEC_ID_NONE, 0 }, | |
116 | }; | |
117 | ||
118 | #define SERVER_PATH "EXT:/PDR/default/" | |
119 | #define ES_NAME_PATTERN "EXT:/PDR/default/ES." | |
120 | ||
121 | static int gxf_find_lines_index(AVStream *st) | |
122 | { | |
123 | GXFStreamContext *sc = st->priv_data; | |
124 | int i; | |
125 | ||
126 | for (i = 0; i < 6; ++i) { | |
127 | if (st->codec->height == gxf_lines_tab[i].height) { | |
128 | sc->lines_index = gxf_lines_tab[i].index; | |
129 | return 0; | |
130 | } | |
131 | } | |
132 | return -1; | |
133 | } | |
134 | ||
135 | static void gxf_write_padding(AVIOContext *pb, int64_t to_pad) | |
136 | { | |
137 | for (; to_pad > 0; to_pad--) { | |
138 | avio_w8(pb, 0); | |
139 | } | |
140 | } | |
141 | ||
142 | static int64_t updatePacketSize(AVIOContext *pb, int64_t pos) | |
143 | { | |
144 | int64_t curpos; | |
145 | int size; | |
146 | ||
147 | size = avio_tell(pb) - pos; | |
148 | if (size % 4) { | |
149 | gxf_write_padding(pb, 4 - size % 4); | |
150 | size = avio_tell(pb) - pos; | |
151 | } | |
152 | curpos = avio_tell(pb); | |
153 | avio_seek(pb, pos + 6, SEEK_SET); | |
154 | avio_wb32(pb, size); | |
155 | avio_seek(pb, curpos, SEEK_SET); | |
156 | return curpos - pos; | |
157 | } | |
158 | ||
159 | static int64_t updateSize(AVIOContext *pb, int64_t pos) | |
160 | { | |
161 | int64_t curpos; | |
162 | ||
163 | curpos = avio_tell(pb); | |
164 | avio_seek(pb, pos, SEEK_SET); | |
165 | avio_wb16(pb, curpos - pos - 2); | |
166 | avio_seek(pb, curpos, SEEK_SET); | |
167 | return curpos - pos; | |
168 | } | |
169 | ||
170 | static void gxf_write_packet_header(AVIOContext *pb, GXFPktType type) | |
171 | { | |
172 | avio_wb32(pb, 0); /* packet leader for synchro */ | |
173 | avio_w8(pb, 1); | |
174 | avio_w8(pb, type); /* map packet */ | |
175 | avio_wb32(pb, 0); /* size */ | |
176 | avio_wb32(pb, 0); /* reserved */ | |
177 | avio_w8(pb, 0xE1); /* trailer 1 */ | |
178 | avio_w8(pb, 0xE2); /* trailer 2 */ | |
179 | } | |
180 | ||
181 | static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st) | |
182 | { | |
183 | GXFStreamContext *sc = st->priv_data; | |
184 | char buffer[1024]; | |
185 | int size, starting_line; | |
186 | ||
187 | if (sc->iframes) { | |
188 | sc->p_per_gop = sc->pframes / sc->iframes; | |
189 | if (sc->pframes % sc->iframes) | |
190 | sc->p_per_gop++; | |
191 | if (sc->pframes) { | |
192 | sc->b_per_i_or_p = sc->bframes / sc->pframes; | |
193 | if (sc->bframes % sc->pframes) | |
194 | sc->b_per_i_or_p++; | |
195 | } | |
196 | if (sc->p_per_gop > 9) | |
197 | sc->p_per_gop = 9; /* ensure value won't take more than one char */ | |
198 | if (sc->b_per_i_or_p > 9) | |
199 | sc->b_per_i_or_p = 9; /* ensure value won't take more than one char */ | |
200 | } | |
201 | if (st->codec->height == 512 || st->codec->height == 608) | |
202 | starting_line = 7; // VBI | |
203 | else if (st->codec->height == 480) | |
204 | starting_line = 20; | |
205 | else | |
206 | starting_line = 23; // default PAL | |
207 | ||
208 | size = snprintf(buffer, sizeof(buffer), "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n" | |
209 | "Pix 0\nCf %d\nCg %d\nSl %d\nnl16 %d\nVi 1\nf1 1\n", | |
210 | (float)st->codec->bit_rate, sc->p_per_gop, sc->b_per_i_or_p, | |
211 | st->codec->pix_fmt == AV_PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1, | |
212 | starting_line, (st->codec->height + 15) / 16); | |
213 | av_assert0(size < sizeof(buffer)); | |
214 | avio_w8(pb, TRACK_MPG_AUX); | |
215 | avio_w8(pb, size + 1); | |
216 | avio_write(pb, (uint8_t *)buffer, size + 1); | |
217 | return size + 3; | |
218 | } | |
219 | ||
220 | static int gxf_write_dv_auxiliary(AVIOContext *pb, AVStream *st) | |
221 | { | |
222 | int64_t track_aux_data = 0; | |
223 | ||
224 | avio_w8(pb, TRACK_AUX); | |
225 | avio_w8(pb, 8); | |
226 | if (st->codec->pix_fmt == AV_PIX_FMT_YUV420P) | |
227 | track_aux_data |= 0x01; /* marks stream as DVCAM instead of DVPRO */ | |
228 | track_aux_data |= 0x40000000; /* aux data is valid */ | |
229 | avio_wl64(pb, track_aux_data); | |
230 | return 8; | |
231 | } | |
232 | ||
233 | static int gxf_write_timecode_auxiliary(AVIOContext *pb, GXFContext *gxf) | |
234 | { | |
235 | uint32_t timecode = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop, | |
236 | gxf->tc.hh, gxf->tc.mm, | |
237 | gxf->tc.ss, gxf->tc.ff); | |
238 | ||
239 | avio_w8(pb, TRACK_AUX); | |
240 | avio_w8(pb, 8); | |
241 | avio_wl32(pb, timecode); | |
242 | /* reserved */ | |
243 | avio_wl32(pb, 0); | |
244 | return 8; | |
245 | } | |
246 | ||
247 | static int gxf_write_track_description(AVFormatContext *s, GXFStreamContext *sc, int index) | |
248 | { | |
249 | GXFContext *gxf = s->priv_data; | |
250 | AVIOContext *pb = s->pb; | |
251 | int64_t pos; | |
252 | ||
253 | /* track description section */ | |
254 | avio_w8(pb, sc->media_type + 0x80); | |
255 | avio_w8(pb, index + 0xC0); | |
256 | ||
257 | pos = avio_tell(pb); | |
258 | avio_wb16(pb, 0); /* size */ | |
259 | ||
260 | /* media file name */ | |
261 | avio_w8(pb, TRACK_NAME); | |
262 | avio_w8(pb, strlen(ES_NAME_PATTERN) + 3); | |
263 | avio_write(pb, ES_NAME_PATTERN, sizeof(ES_NAME_PATTERN) - 1); | |
264 | avio_wb16(pb, sc->media_info); | |
265 | avio_w8(pb, 0); | |
266 | ||
267 | switch (sc->track_type) { | |
268 | case 3: /* timecode */ | |
269 | gxf_write_timecode_auxiliary(pb, gxf); | |
270 | break; | |
271 | case 4: /* MPEG2 */ | |
272 | case 9: /* MPEG1 */ | |
273 | gxf_write_mpeg_auxiliary(pb, s->streams[index]); | |
274 | break; | |
275 | case 5: /* DV25 */ | |
276 | case 6: /* DV50 */ | |
277 | gxf_write_dv_auxiliary(pb, s->streams[index]); | |
278 | break; | |
279 | default: | |
280 | avio_w8(pb, TRACK_AUX); | |
281 | avio_w8(pb, 8); | |
282 | avio_wl64(pb, 0); | |
283 | } | |
284 | ||
285 | /* file system version */ | |
286 | avio_w8(pb, TRACK_VER); | |
287 | avio_w8(pb, 4); | |
288 | avio_wb32(pb, 0); | |
289 | ||
290 | /* frame rate */ | |
291 | avio_w8(pb, TRACK_FPS); | |
292 | avio_w8(pb, 4); | |
293 | avio_wb32(pb, sc->frame_rate_index); | |
294 | ||
295 | /* lines per frame */ | |
296 | avio_w8(pb, TRACK_LINES); | |
297 | avio_w8(pb, 4); | |
298 | avio_wb32(pb, sc->lines_index); | |
299 | ||
300 | /* fields per frame */ | |
301 | avio_w8(pb, TRACK_FPF); | |
302 | avio_w8(pb, 4); | |
303 | avio_wb32(pb, sc->fields); | |
304 | ||
305 | return updateSize(pb, pos); | |
306 | } | |
307 | ||
308 | static int gxf_write_material_data_section(AVFormatContext *s) | |
309 | { | |
310 | GXFContext *gxf = s->priv_data; | |
311 | AVIOContext *pb = s->pb; | |
312 | int64_t pos; | |
313 | int len; | |
314 | const char *filename = strrchr(s->filename, '/'); | |
315 | ||
316 | pos = avio_tell(pb); | |
317 | avio_wb16(pb, 0); /* size */ | |
318 | ||
319 | /* name */ | |
320 | if (filename) | |
321 | filename++; | |
322 | else | |
323 | filename = s->filename; | |
324 | len = strlen(filename); | |
325 | ||
326 | avio_w8(pb, MAT_NAME); | |
327 | avio_w8(pb, strlen(SERVER_PATH) + len + 1); | |
328 | avio_write(pb, SERVER_PATH, sizeof(SERVER_PATH) - 1); | |
329 | avio_write(pb, filename, len); | |
330 | avio_w8(pb, 0); | |
331 | ||
332 | /* first field */ | |
333 | avio_w8(pb, MAT_FIRST_FIELD); | |
334 | avio_w8(pb, 4); | |
335 | avio_wb32(pb, 0); | |
336 | ||
337 | /* last field */ | |
338 | avio_w8(pb, MAT_LAST_FIELD); | |
339 | avio_w8(pb, 4); | |
340 | avio_wb32(pb, gxf->nb_fields); | |
341 | ||
342 | /* reserved */ | |
343 | avio_w8(pb, MAT_MARK_IN); | |
344 | avio_w8(pb, 4); | |
345 | avio_wb32(pb, 0); | |
346 | ||
347 | avio_w8(pb, MAT_MARK_OUT); | |
348 | avio_w8(pb, 4); | |
349 | avio_wb32(pb, gxf->nb_fields); | |
350 | ||
351 | /* estimated size */ | |
352 | avio_w8(pb, MAT_SIZE); | |
353 | avio_w8(pb, 4); | |
354 | avio_wb32(pb, avio_size(pb) / 1024); | |
355 | ||
356 | return updateSize(pb, pos); | |
357 | } | |
358 | ||
359 | static int gxf_write_track_description_section(AVFormatContext *s) | |
360 | { | |
361 | GXFContext *gxf = s->priv_data; | |
362 | AVIOContext *pb = s->pb; | |
363 | int64_t pos; | |
364 | int i; | |
365 | ||
366 | pos = avio_tell(pb); | |
367 | avio_wb16(pb, 0); /* size */ | |
368 | for (i = 0; i < s->nb_streams; ++i) | |
369 | gxf_write_track_description(s, s->streams[i]->priv_data, i); | |
370 | ||
371 | gxf_write_track_description(s, &gxf->timecode_track, s->nb_streams); | |
372 | ||
373 | return updateSize(pb, pos); | |
374 | } | |
375 | ||
376 | static int gxf_write_map_packet(AVFormatContext *s, int rewrite) | |
377 | { | |
378 | GXFContext *gxf = s->priv_data; | |
379 | AVIOContext *pb = s->pb; | |
380 | int64_t pos = avio_tell(pb); | |
381 | ||
382 | if (!rewrite) { | |
383 | if (!(gxf->map_offsets_nb % 30)) { | |
384 | int err; | |
385 | if ((err = av_reallocp_array(&gxf->map_offsets, | |
386 | gxf->map_offsets_nb + 30, | |
387 | sizeof(*gxf->map_offsets))) < 0) { | |
388 | gxf->map_offsets_nb = 0; | |
389 | av_log(s, AV_LOG_ERROR, "could not realloc map offsets\n"); | |
390 | return err; | |
391 | } | |
392 | } | |
393 | gxf->map_offsets[gxf->map_offsets_nb++] = pos; // do not increment here | |
394 | } | |
395 | ||
396 | gxf_write_packet_header(pb, PKT_MAP); | |
397 | ||
398 | /* preamble */ | |
399 | avio_w8(pb, 0xE0); /* version */ | |
400 | avio_w8(pb, 0xFF); /* reserved */ | |
401 | ||
402 | gxf_write_material_data_section(s); | |
403 | gxf_write_track_description_section(s); | |
404 | ||
405 | return updatePacketSize(pb, pos); | |
406 | } | |
407 | ||
408 | static int gxf_write_flt_packet(AVFormatContext *s) | |
409 | { | |
410 | GXFContext *gxf = s->priv_data; | |
411 | AVIOContext *pb = s->pb; | |
412 | int64_t pos = avio_tell(pb); | |
413 | int fields_per_flt = (gxf->nb_fields+1) / 1000 + 1; | |
414 | int flt_entries = gxf->nb_fields / fields_per_flt; | |
415 | int i = 0; | |
416 | ||
417 | gxf_write_packet_header(pb, PKT_FLT); | |
418 | ||
419 | avio_wl32(pb, fields_per_flt); /* number of fields */ | |
420 | avio_wl32(pb, flt_entries); /* number of active flt entries */ | |
421 | ||
422 | if (gxf->flt_entries) { | |
423 | for (i = 0; i < flt_entries; i++) | |
424 | avio_wl32(pb, gxf->flt_entries[(i*fields_per_flt)>>1]); | |
425 | } | |
426 | ||
427 | for (; i < 1000; i++) | |
428 | avio_wl32(pb, 0); | |
429 | ||
430 | return updatePacketSize(pb, pos); | |
431 | } | |
432 | ||
433 | static int gxf_write_umf_material_description(AVFormatContext *s) | |
434 | { | |
435 | GXFContext *gxf = s->priv_data; | |
436 | AVIOContext *pb = s->pb; | |
437 | int timecode_base = gxf->time_base.den == 60000 ? 60 : 50; | |
438 | int64_t timestamp = 0; | |
439 | AVDictionaryEntry *t; | |
440 | uint64_t nb_fields; | |
441 | uint32_t timecode_in; // timecode at mark in | |
442 | uint32_t timecode_out; // timecode at mark out | |
443 | ||
444 | if (t = av_dict_get(s->metadata, "creation_time", NULL, 0)) | |
445 | timestamp = ff_iso8601_to_unix_time(t->value); | |
446 | ||
447 | timecode_in = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop, | |
448 | gxf->tc.hh, gxf->tc.mm, | |
449 | gxf->tc.ss, gxf->tc.ff); | |
450 | ||
451 | nb_fields = gxf->nb_fields + | |
452 | gxf->tc.hh * (timecode_base * 3600) + | |
453 | gxf->tc.mm * (timecode_base * 60) + | |
454 | gxf->tc.ss * timecode_base + | |
455 | gxf->tc.ff; | |
456 | ||
457 | timecode_out = GXF_TIMECODE(gxf->tc.color, gxf->tc.drop, | |
458 | nb_fields / (timecode_base * 3600) % 24, | |
459 | nb_fields / (timecode_base * 60) % 60, | |
460 | nb_fields / timecode_base % 60, | |
461 | nb_fields % timecode_base); | |
462 | ||
463 | avio_wl32(pb, gxf->flags); | |
464 | avio_wl32(pb, gxf->nb_fields); /* length of the longest track */ | |
465 | avio_wl32(pb, gxf->nb_fields); /* length of the shortest track */ | |
466 | avio_wl32(pb, 0); /* mark in */ | |
467 | avio_wl32(pb, gxf->nb_fields); /* mark out */ | |
468 | avio_wl32(pb, timecode_in); /* timecode mark in */ | |
469 | avio_wl32(pb, timecode_out); /* timecode mark out */ | |
470 | avio_wl64(pb, timestamp); /* modification time */ | |
471 | avio_wl64(pb, timestamp); /* creation time */ | |
472 | avio_wl16(pb, 0); /* reserved */ | |
473 | avio_wl16(pb, 0); /* reserved */ | |
474 | avio_wl16(pb, gxf->audio_tracks); | |
475 | avio_wl16(pb, 1); /* timecode track count */ | |
476 | avio_wl16(pb, 0); /* reserved */ | |
477 | avio_wl16(pb, gxf->mpeg_tracks); | |
478 | return 48; | |
479 | } | |
480 | ||
481 | static int gxf_write_umf_payload(AVFormatContext *s) | |
482 | { | |
483 | GXFContext *gxf = s->priv_data; | |
484 | AVIOContext *pb = s->pb; | |
485 | ||
486 | avio_wl32(pb, gxf->umf_length); /* total length of the umf data */ | |
487 | avio_wl32(pb, 3); /* version */ | |
488 | avio_wl32(pb, s->nb_streams+1); | |
489 | avio_wl32(pb, gxf->umf_track_offset); /* umf track section offset */ | |
490 | avio_wl32(pb, gxf->umf_track_size); | |
491 | avio_wl32(pb, s->nb_streams+1); | |
492 | avio_wl32(pb, gxf->umf_media_offset); | |
493 | avio_wl32(pb, gxf->umf_media_size); | |
494 | avio_wl32(pb, gxf->umf_length); /* user data offset */ | |
495 | avio_wl32(pb, 0); /* user data size */ | |
496 | avio_wl32(pb, 0); /* reserved */ | |
497 | avio_wl32(pb, 0); /* reserved */ | |
498 | return 48; | |
499 | } | |
500 | ||
501 | static int gxf_write_umf_track_description(AVFormatContext *s) | |
502 | { | |
503 | AVIOContext *pb = s->pb; | |
504 | GXFContext *gxf = s->priv_data; | |
505 | int64_t pos = avio_tell(pb); | |
506 | int i; | |
507 | ||
508 | gxf->umf_track_offset = pos - gxf->umf_start_offset; | |
509 | for (i = 0; i < s->nb_streams; ++i) { | |
510 | GXFStreamContext *sc = s->streams[i]->priv_data; | |
511 | avio_wl16(pb, sc->media_info); | |
512 | avio_wl16(pb, 1); | |
513 | } | |
514 | ||
515 | avio_wl16(pb, gxf->timecode_track.media_info); | |
516 | avio_wl16(pb, 1); | |
517 | ||
518 | return avio_tell(pb) - pos; | |
519 | } | |
520 | ||
521 | static int gxf_write_umf_media_mpeg(AVIOContext *pb, AVStream *st) | |
522 | { | |
523 | GXFStreamContext *sc = st->priv_data; | |
524 | ||
525 | if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P) | |
526 | avio_wl32(pb, 2); | |
527 | else | |
528 | avio_wl32(pb, 1); /* default to 420 */ | |
529 | avio_wl32(pb, sc->first_gop_closed == 1); /* closed = 1, open = 0, unknown = 255 */ | |
530 | avio_wl32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */ | |
531 | avio_wl32(pb, 1); /* I picture per GOP */ | |
532 | avio_wl32(pb, sc->p_per_gop); | |
533 | avio_wl32(pb, sc->b_per_i_or_p); | |
534 | if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) | |
535 | avio_wl32(pb, 2); | |
536 | else if (st->codec->codec_id == AV_CODEC_ID_MPEG1VIDEO) | |
537 | avio_wl32(pb, 1); | |
538 | else | |
539 | avio_wl32(pb, 0); | |
540 | avio_wl32(pb, 0); /* reserved */ | |
541 | return 32; | |
542 | } | |
543 | ||
544 | static int gxf_write_umf_media_timecode(AVIOContext *pb, int drop) | |
545 | { | |
546 | avio_wl32(pb, drop); /* drop frame */ | |
547 | avio_wl32(pb, 0); /* reserved */ | |
548 | avio_wl32(pb, 0); /* reserved */ | |
549 | avio_wl32(pb, 0); /* reserved */ | |
550 | avio_wl32(pb, 0); /* reserved */ | |
551 | avio_wl32(pb, 0); /* reserved */ | |
552 | avio_wl32(pb, 0); /* reserved */ | |
553 | avio_wl32(pb, 0); /* reserved */ | |
554 | return 32; | |
555 | } | |
556 | ||
557 | static int gxf_write_umf_media_dv(AVIOContext *pb, GXFStreamContext *sc, AVStream *st) | |
558 | { | |
559 | int dv_umf_data = 0; | |
560 | ||
561 | if (st->codec->pix_fmt == AV_PIX_FMT_YUV420P) | |
562 | dv_umf_data |= 0x20; /* marks as DVCAM instead of DVPRO */ | |
563 | avio_wl32(pb, dv_umf_data); | |
564 | avio_wl32(pb, 0); | |
565 | avio_wl32(pb, 0); | |
566 | avio_wl32(pb, 0); | |
567 | avio_wl32(pb, 0); | |
568 | avio_wl32(pb, 0); | |
569 | avio_wl32(pb, 0); | |
570 | avio_wl32(pb, 0); | |
571 | return 32; | |
572 | } | |
573 | ||
574 | static int gxf_write_umf_media_audio(AVIOContext *pb, GXFStreamContext *sc) | |
575 | { | |
576 | avio_wl64(pb, av_double2int(1)); /* sound level to begin to */ | |
577 | avio_wl64(pb, av_double2int(1)); /* sound level to begin to */ | |
578 | avio_wl32(pb, 0); /* number of fields over which to ramp up sound level */ | |
579 | avio_wl32(pb, 0); /* number of fields over which to ramp down sound level */ | |
580 | avio_wl32(pb, 0); /* reserved */ | |
581 | avio_wl32(pb, 0); /* reserved */ | |
582 | return 32; | |
583 | } | |
584 | ||
585 | static int gxf_write_umf_media_description(AVFormatContext *s) | |
586 | { | |
587 | GXFContext *gxf = s->priv_data; | |
588 | AVIOContext *pb = s->pb; | |
589 | int64_t pos; | |
590 | int i, j; | |
591 | ||
592 | pos = avio_tell(pb); | |
593 | gxf->umf_media_offset = pos - gxf->umf_start_offset; | |
594 | for (i = 0; i <= s->nb_streams; ++i) { | |
595 | GXFStreamContext *sc; | |
596 | int64_t startpos, curpos; | |
597 | ||
598 | if (i == s->nb_streams) | |
599 | sc = &gxf->timecode_track; | |
600 | else | |
601 | sc = s->streams[i]->priv_data; | |
602 | ||
603 | startpos = avio_tell(pb); | |
604 | avio_wl16(pb, 0); /* length */ | |
605 | avio_wl16(pb, sc->media_info); | |
606 | avio_wl16(pb, 0); /* reserved */ | |
607 | avio_wl16(pb, 0); /* reserved */ | |
608 | avio_wl32(pb, gxf->nb_fields); | |
609 | avio_wl32(pb, 0); /* attributes rw, ro */ | |
610 | avio_wl32(pb, 0); /* mark in */ | |
611 | avio_wl32(pb, gxf->nb_fields); /* mark out */ | |
612 | avio_write(pb, ES_NAME_PATTERN, strlen(ES_NAME_PATTERN)); | |
613 | avio_wb16(pb, sc->media_info); | |
614 | for (j = strlen(ES_NAME_PATTERN)+2; j < 88; j++) | |
615 | avio_w8(pb, 0); | |
616 | avio_wl32(pb, sc->track_type); | |
617 | avio_wl32(pb, sc->sample_rate); | |
618 | avio_wl32(pb, sc->sample_size); | |
619 | avio_wl32(pb, 0); /* reserved */ | |
620 | ||
621 | if (sc == &gxf->timecode_track) | |
622 | gxf_write_umf_media_timecode(pb, gxf->tc.drop); | |
623 | else { | |
624 | AVStream *st = s->streams[i]; | |
625 | switch (st->codec->codec_id) { | |
626 | case AV_CODEC_ID_MPEG1VIDEO: | |
627 | case AV_CODEC_ID_MPEG2VIDEO: | |
628 | gxf_write_umf_media_mpeg(pb, st); | |
629 | break; | |
630 | case AV_CODEC_ID_PCM_S16LE: | |
631 | gxf_write_umf_media_audio(pb, sc); | |
632 | break; | |
633 | case AV_CODEC_ID_DVVIDEO: | |
634 | gxf_write_umf_media_dv(pb, sc, st); | |
635 | break; | |
636 | } | |
637 | } | |
638 | ||
639 | curpos = avio_tell(pb); | |
640 | avio_seek(pb, startpos, SEEK_SET); | |
641 | avio_wl16(pb, curpos - startpos); | |
642 | avio_seek(pb, curpos, SEEK_SET); | |
643 | } | |
644 | return avio_tell(pb) - pos; | |
645 | } | |
646 | ||
647 | static int gxf_write_umf_packet(AVFormatContext *s) | |
648 | { | |
649 | GXFContext *gxf = s->priv_data; | |
650 | AVIOContext *pb = s->pb; | |
651 | int64_t pos = avio_tell(pb); | |
652 | ||
653 | gxf_write_packet_header(pb, PKT_UMF); | |
654 | ||
655 | /* preamble */ | |
656 | avio_w8(pb, 3); /* first and last (only) packet */ | |
657 | avio_wb32(pb, gxf->umf_length); /* data length */ | |
658 | ||
659 | gxf->umf_start_offset = avio_tell(pb); | |
660 | gxf_write_umf_payload(s); | |
661 | gxf_write_umf_material_description(s); | |
662 | gxf->umf_track_size = gxf_write_umf_track_description(s); | |
663 | gxf->umf_media_size = gxf_write_umf_media_description(s); | |
664 | gxf->umf_length = avio_tell(pb) - gxf->umf_start_offset; | |
665 | return updatePacketSize(pb, pos); | |
666 | } | |
667 | ||
668 | static const int GXF_samples_per_frame[] = { 32768, 0 }; | |
669 | ||
670 | static void gxf_init_timecode_track(GXFStreamContext *sc, GXFStreamContext *vsc) | |
671 | { | |
672 | if (!vsc) | |
673 | return; | |
674 | ||
675 | sc->media_type = vsc->sample_rate == 60 ? 7 : 8; | |
676 | sc->sample_rate = vsc->sample_rate; | |
677 | sc->media_info = ('T'<<8) | '0'; | |
678 | sc->track_type = 3; | |
679 | sc->frame_rate_index = vsc->frame_rate_index; | |
680 | sc->lines_index = vsc->lines_index; | |
681 | sc->sample_size = 16; | |
682 | sc->fields = vsc->fields; | |
683 | } | |
684 | ||
685 | static int gxf_init_timecode(AVFormatContext *s, GXFTimecode *tc, const char *tcstr, int fields) | |
686 | { | |
687 | char c; | |
688 | ||
689 | if (sscanf(tcstr, "%d:%d:%d%c%d", &tc->hh, &tc->mm, &tc->ss, &c, &tc->ff) != 5) { | |
690 | av_log(s, AV_LOG_ERROR, "unable to parse timecode, " | |
691 | "syntax: hh:mm:ss[:;.]ff\n"); | |
692 | return -1; | |
693 | } | |
694 | ||
695 | tc->color = 0; | |
696 | tc->drop = c != ':'; | |
697 | ||
698 | if (fields == 2) | |
699 | tc->ff = tc->ff * 2; | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | static int gxf_write_header(AVFormatContext *s) | |
705 | { | |
706 | AVIOContext *pb = s->pb; | |
707 | GXFContext *gxf = s->priv_data; | |
708 | GXFStreamContext *vsc = NULL; | |
709 | uint8_t tracks[255] = {0}; | |
710 | int i, media_info = 0; | |
711 | int ret; | |
712 | AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0); | |
713 | ||
714 | if (!pb->seekable) { | |
715 | av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome\n"); | |
716 | return -1; | |
717 | } | |
718 | ||
719 | gxf->flags |= 0x00080000; /* material is simple clip */ | |
720 | for (i = 0; i < s->nb_streams; ++i) { | |
721 | AVStream *st = s->streams[i]; | |
722 | GXFStreamContext *sc = av_mallocz(sizeof(*sc)); | |
723 | if (!sc) | |
724 | return AVERROR(ENOMEM); | |
725 | st->priv_data = sc; | |
726 | ||
727 | sc->media_type = ff_codec_get_tag(gxf_media_types, st->codec->codec_id); | |
728 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
729 | if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE) { | |
730 | av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n"); | |
731 | return -1; | |
732 | } | |
733 | if (st->codec->sample_rate != 48000) { | |
734 | av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n"); | |
735 | return -1; | |
736 | } | |
737 | if (st->codec->channels != 1) { | |
738 | av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n"); | |
739 | return -1; | |
740 | } | |
741 | sc->track_type = 2; | |
742 | sc->sample_rate = st->codec->sample_rate; | |
743 | avpriv_set_pts_info(st, 64, 1, sc->sample_rate); | |
744 | sc->sample_size = 16; | |
745 | sc->frame_rate_index = -2; | |
746 | sc->lines_index = -2; | |
747 | sc->fields = -2; | |
748 | gxf->audio_tracks++; | |
749 | gxf->flags |= 0x04000000; /* audio is 16 bit pcm */ | |
750 | media_info = 'A'; | |
751 | } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
752 | if (i != 0) { | |
753 | av_log(s, AV_LOG_ERROR, "video stream must be the first track\n"); | |
754 | return -1; | |
755 | } | |
756 | /* FIXME check from time_base ? */ | |
757 | if (st->codec->height == 480 || st->codec->height == 512) { /* NTSC or NTSC+VBI */ | |
758 | sc->frame_rate_index = 5; | |
759 | sc->sample_rate = 60; | |
760 | gxf->flags |= 0x00000080; | |
761 | gxf->time_base = (AVRational){ 1001, 60000 }; | |
762 | } else if (st->codec->height == 576 || st->codec->height == 608) { /* PAL or PAL+VBI */ | |
763 | sc->frame_rate_index = 6; | |
764 | sc->media_type++; | |
765 | sc->sample_rate = 50; | |
766 | gxf->flags |= 0x00000040; | |
767 | gxf->time_base = (AVRational){ 1, 50 }; | |
768 | } else { | |
769 | av_log(s, AV_LOG_ERROR, "unsupported video resolution, " | |
770 | "gxf muxer only accepts PAL or NTSC resolutions currently\n"); | |
771 | return -1; | |
772 | } | |
773 | if (!tcr) | |
774 | tcr = av_dict_get(st->metadata, "timecode", NULL, 0); | |
775 | avpriv_set_pts_info(st, 64, gxf->time_base.num, gxf->time_base.den); | |
776 | if (gxf_find_lines_index(st) < 0) | |
777 | sc->lines_index = -1; | |
778 | sc->sample_size = st->codec->bit_rate; | |
779 | sc->fields = 2; /* interlaced */ | |
780 | ||
781 | vsc = sc; | |
782 | ||
783 | switch (st->codec->codec_id) { | |
784 | case AV_CODEC_ID_MJPEG: | |
785 | sc->track_type = 1; | |
786 | gxf->flags |= 0x00004000; | |
787 | media_info = 'J'; | |
788 | break; | |
789 | case AV_CODEC_ID_MPEG1VIDEO: | |
790 | sc->track_type = 9; | |
791 | gxf->mpeg_tracks++; | |
792 | media_info = 'L'; | |
793 | break; | |
794 | case AV_CODEC_ID_MPEG2VIDEO: | |
795 | sc->first_gop_closed = -1; | |
796 | sc->track_type = 4; | |
797 | gxf->mpeg_tracks++; | |
798 | gxf->flags |= 0x00008000; | |
799 | media_info = 'M'; | |
800 | break; | |
801 | case AV_CODEC_ID_DVVIDEO: | |
802 | if (st->codec->pix_fmt == AV_PIX_FMT_YUV422P) { | |
803 | sc->media_type += 2; | |
804 | sc->track_type = 6; | |
805 | gxf->flags |= 0x00002000; | |
806 | media_info = 'E'; | |
807 | } else { | |
808 | sc->track_type = 5; | |
809 | gxf->flags |= 0x00001000; | |
810 | media_info = 'D'; | |
811 | } | |
812 | break; | |
813 | default: | |
814 | av_log(s, AV_LOG_ERROR, "video codec not supported\n"); | |
815 | return -1; | |
816 | } | |
817 | } | |
818 | /* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */ | |
819 | sc->media_info = media_info<<8 | ('0'+tracks[media_info]++); | |
820 | sc->order = s->nb_streams - st->index; | |
821 | } | |
822 | ||
823 | if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0) | |
824 | return -1; | |
825 | ||
826 | if (tcr && vsc) | |
827 | gxf_init_timecode(s, &gxf->tc, tcr->value, vsc->fields); | |
828 | ||
829 | gxf_init_timecode_track(&gxf->timecode_track, vsc); | |
830 | gxf->flags |= 0x200000; // time code track is non-drop frame | |
831 | ||
832 | if ((ret = gxf_write_map_packet(s, 0)) < 0) | |
833 | return ret; | |
834 | gxf_write_flt_packet(s); | |
835 | gxf_write_umf_packet(s); | |
836 | ||
837 | gxf->packet_count = 3; | |
838 | ||
839 | avio_flush(pb); | |
840 | return 0; | |
841 | } | |
842 | ||
843 | static int gxf_write_eos_packet(AVIOContext *pb) | |
844 | { | |
845 | int64_t pos = avio_tell(pb); | |
846 | ||
847 | gxf_write_packet_header(pb, PKT_EOS); | |
848 | return updatePacketSize(pb, pos); | |
849 | } | |
850 | ||
851 | static int gxf_write_trailer(AVFormatContext *s) | |
852 | { | |
853 | GXFContext *gxf = s->priv_data; | |
854 | AVIOContext *pb = s->pb; | |
855 | int64_t end; | |
856 | int i; | |
857 | int ret; | |
858 | ||
859 | ff_audio_interleave_close(s); | |
860 | ||
861 | gxf_write_eos_packet(pb); | |
862 | end = avio_tell(pb); | |
863 | avio_seek(pb, 0, SEEK_SET); | |
864 | /* overwrite map, flt and umf packets with new values */ | |
865 | if ((ret = gxf_write_map_packet(s, 1)) < 0) | |
866 | return ret; | |
867 | gxf_write_flt_packet(s); | |
868 | gxf_write_umf_packet(s); | |
869 | avio_flush(pb); | |
870 | /* update duration in all map packets */ | |
871 | for (i = 1; i < gxf->map_offsets_nb; i++) { | |
872 | avio_seek(pb, gxf->map_offsets[i], SEEK_SET); | |
873 | if ((ret = gxf_write_map_packet(s, 1)) < 0) | |
874 | return ret; | |
875 | avio_flush(pb); | |
876 | } | |
877 | ||
878 | avio_seek(pb, end, SEEK_SET); | |
879 | ||
880 | av_freep(&gxf->flt_entries); | |
881 | av_freep(&gxf->map_offsets); | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | static int gxf_parse_mpeg_frame(GXFStreamContext *sc, const uint8_t *buf, int size) | |
887 | { | |
888 | uint32_t c=-1; | |
889 | int i; | |
890 | for(i=0; i<size-4 && c!=0x100; i++){ | |
891 | c = (c<<8) + buf[i]; | |
892 | if(c == 0x1B8 && sc->first_gop_closed == -1) /* GOP start code */ | |
893 | sc->first_gop_closed= (buf[i+4]>>6)&1; | |
894 | } | |
895 | return (buf[i+1]>>3)&7; | |
896 | } | |
897 | ||
898 | static int gxf_write_media_preamble(AVFormatContext *s, AVPacket *pkt, int size) | |
899 | { | |
900 | GXFContext *gxf = s->priv_data; | |
901 | AVIOContext *pb = s->pb; | |
902 | AVStream *st = s->streams[pkt->stream_index]; | |
903 | GXFStreamContext *sc = st->priv_data; | |
904 | unsigned field_nb; | |
905 | /* If the video is frame-encoded, the frame numbers shall be represented by | |
906 | * even field numbers. | |
907 | * see SMPTE360M-2004 6.4.2.1.3 Media field number */ | |
908 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
909 | field_nb = gxf->nb_fields; | |
910 | } else { | |
911 | field_nb = av_rescale_rnd(pkt->dts, gxf->time_base.den, | |
912 | (int64_t)48000*gxf->time_base.num, AV_ROUND_UP); | |
913 | } | |
914 | ||
915 | avio_w8(pb, sc->media_type); | |
916 | avio_w8(pb, st->index); | |
917 | avio_wb32(pb, field_nb); | |
918 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
919 | avio_wb16(pb, 0); | |
920 | avio_wb16(pb, size / 2); | |
921 | } else if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) { | |
922 | int frame_type = gxf_parse_mpeg_frame(sc, pkt->data, pkt->size); | |
923 | if (frame_type == AV_PICTURE_TYPE_I) { | |
924 | avio_w8(pb, 0x0d); | |
925 | sc->iframes++; | |
926 | } else if (frame_type == AV_PICTURE_TYPE_B) { | |
927 | avio_w8(pb, 0x0f); | |
928 | sc->bframes++; | |
929 | } else { | |
930 | avio_w8(pb, 0x0e); | |
931 | sc->pframes++; | |
932 | } | |
933 | avio_wb24(pb, size); | |
934 | } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) { | |
935 | avio_w8(pb, size / 4096); | |
936 | avio_wb24(pb, 0); | |
937 | } else | |
938 | avio_wb32(pb, size); | |
939 | avio_wb32(pb, field_nb); | |
940 | avio_w8(pb, 1); /* flags */ | |
941 | avio_w8(pb, 0); /* reserved */ | |
942 | return 16; | |
943 | } | |
944 | ||
945 | static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt) | |
946 | { | |
947 | GXFContext *gxf = s->priv_data; | |
948 | AVIOContext *pb = s->pb; | |
949 | AVStream *st = s->streams[pkt->stream_index]; | |
950 | int64_t pos = avio_tell(pb); | |
951 | int padding = 0; | |
952 | unsigned packet_start_offset = avio_tell(pb) / 1024; | |
953 | int ret; | |
954 | ||
955 | gxf_write_packet_header(pb, PKT_MEDIA); | |
956 | if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */ | |
957 | padding = 4 - pkt->size % 4; | |
958 | else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) | |
959 | padding = GXF_AUDIO_PACKET_SIZE - pkt->size; | |
960 | gxf_write_media_preamble(s, pkt, pkt->size + padding); | |
961 | avio_write(pb, pkt->data, pkt->size); | |
962 | gxf_write_padding(pb, padding); | |
963 | ||
964 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
965 | if (!(gxf->flt_entries_nb % 500)) { | |
966 | int err; | |
967 | if ((err = av_reallocp_array(&gxf->flt_entries, | |
968 | gxf->flt_entries_nb + 500, | |
969 | sizeof(*gxf->flt_entries))) < 0) { | |
970 | gxf->flt_entries_nb = 0; | |
971 | gxf->nb_fields = 0; | |
972 | av_log(s, AV_LOG_ERROR, "could not reallocate flt entries\n"); | |
973 | return err; | |
974 | } | |
975 | } | |
976 | gxf->flt_entries[gxf->flt_entries_nb++] = packet_start_offset; | |
977 | gxf->nb_fields += 2; // count fields | |
978 | } | |
979 | ||
980 | updatePacketSize(pb, pos); | |
981 | ||
982 | gxf->packet_count++; | |
983 | if (gxf->packet_count == 100) { | |
984 | if ((ret = gxf_write_map_packet(s, 0)) < 0) | |
985 | return ret; | |
986 | gxf->packet_count = 0; | |
987 | } | |
988 | ||
989 | return 0; | |
990 | } | |
991 | ||
992 | static int gxf_compare_field_nb(AVFormatContext *s, AVPacket *next, AVPacket *cur) | |
993 | { | |
994 | GXFContext *gxf = s->priv_data; | |
995 | AVPacket *pkt[2] = { cur, next }; | |
996 | int i, field_nb[2]; | |
997 | GXFStreamContext *sc[2]; | |
998 | ||
999 | for (i = 0; i < 2; i++) { | |
1000 | AVStream *st = s->streams[pkt[i]->stream_index]; | |
1001 | sc[i] = st->priv_data; | |
1002 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { | |
1003 | field_nb[i] = av_rescale_rnd(pkt[i]->dts, gxf->time_base.den, | |
1004 | (int64_t)48000*gxf->time_base.num, AV_ROUND_UP); | |
1005 | field_nb[i] &= ~1; // compare against even field number because audio must be before video | |
1006 | } else | |
1007 | field_nb[i] = pkt[i]->dts; // dts are field based | |
1008 | } | |
1009 | ||
1010 | return field_nb[1] > field_nb[0] || | |
1011 | (field_nb[1] == field_nb[0] && sc[1]->order > sc[0]->order); | |
1012 | } | |
1013 | ||
1014 | static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush) | |
1015 | { | |
1016 | if (pkt && s->streams[pkt->stream_index]->codec->codec_type == AVMEDIA_TYPE_VIDEO) | |
1017 | pkt->duration = 2; // enforce 2 fields | |
1018 | return ff_audio_rechunk_interleave(s, out, pkt, flush, | |
1019 | ff_interleave_packet_per_dts, gxf_compare_field_nb); | |
1020 | } | |
1021 | ||
1022 | AVOutputFormat ff_gxf_muxer = { | |
1023 | .name = "gxf", | |
1024 | .long_name = NULL_IF_CONFIG_SMALL("GXF (General eXchange Format)"), | |
1025 | .extensions = "gxf", | |
1026 | .priv_data_size = sizeof(GXFContext), | |
1027 | .audio_codec = AV_CODEC_ID_PCM_S16LE, | |
1028 | .video_codec = AV_CODEC_ID_MPEG2VIDEO, | |
1029 | .write_header = gxf_write_header, | |
1030 | .write_packet = gxf_write_packet, | |
1031 | .write_trailer = gxf_write_trailer, | |
1032 | .interleave_packet = gxf_interleave_packet, | |
1033 | }; |