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rl2: return meaningful error codes.
[FFMpeg-mirror/mplayer-patches.git] / avconv_opt.c
blobce32df6b6bd5672120d1645803be48b5fd4b6525
1 /*
2 * avconv option parsing
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <stdint.h>
22
23 #include "avconv.h"
24 #include "cmdutils.h"
25
26 #include "libavformat/avformat.h"
27
28 #include "libavcodec/avcodec.h"
29
30 #include "libavfilter/avfilter.h"
31 #include "libavfilter/avfiltergraph.h"
32
33 #include "libavutil/avassert.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/avutil.h"
36 #include "libavutil/channel_layout.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/fifo.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/pixfmt.h"
44
45 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
46 {\
47 int i, ret;\
48 for (i = 0; i < o->nb_ ## name; i++) {\
49 char *spec = o->name[i].specifier;\
50 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
51 outvar = o->name[i].u.type;\
52 else if (ret < 0)\
53 exit(1);\
54 }\
55 }
56
57 char *vstats_filename;
58
59 float audio_drift_threshold = 0.1;
60 float dts_delta_threshold = 10;
61
62 int audio_volume = 256;
63 int audio_sync_method = 0;
64 int video_sync_method = VSYNC_AUTO;
65 int do_deinterlace = 0;
66 int do_benchmark = 0;
67 int do_hex_dump = 0;
68 int do_pkt_dump = 0;
69 int copy_ts = 0;
70 int copy_tb = 1;
71 int exit_on_error = 0;
72 int print_stats = 1;
73 int qp_hist = 0;
74
75 static int file_overwrite = 0;
76 static int video_discard = 0;
77 static int intra_dc_precision = 8;
78 static int using_stdin = 0;
79 static int input_sync;
80
81 static void uninit_options(OptionsContext *o)
82 {
83 const OptionDef *po = options;
84 int i;
85
86 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
87 while (po->name) {
88 void *dst = (uint8_t*)o + po->u.off;
89
90 if (po->flags & OPT_SPEC) {
91 SpecifierOpt **so = dst;
92 int i, *count = (int*)(so + 1);
93 for (i = 0; i < *count; i++) {
94 av_freep(&(*so)[i].specifier);
95 if (po->flags & OPT_STRING)
96 av_freep(&(*so)[i].u.str);
97 }
98 av_freep(so);
99 *count = 0;
100 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
101 av_freep(dst);
102 po++;
103 }
104
105 for (i = 0; i < o->nb_stream_maps; i++)
106 av_freep(&o->stream_maps[i].linklabel);
107 av_freep(&o->stream_maps);
108 av_freep(&o->meta_data_maps);
109 av_freep(&o->streamid_map);
110 }
111
112 static void init_options(OptionsContext *o)
113 {
114 memset(o, 0, sizeof(*o));
115
116 o->mux_max_delay = 0.7;
117 o->recording_time = INT64_MAX;
118 o->limit_filesize = UINT64_MAX;
119 o->chapters_input_file = INT_MAX;
120 }
121
122 static double parse_frame_aspect_ratio(const char *arg)
123 {
124 int x = 0, y = 0;
125 double ar = 0;
126 const char *p;
127 char *end;
128
129 p = strchr(arg, ':');
130 if (p) {
131 x = strtol(arg, &end, 10);
132 if (end == p)
133 y = strtol(end + 1, &end, 10);
134 if (x > 0 && y > 0)
135 ar = (double)x / (double)y;
136 } else
137 ar = strtod(arg, NULL);
138
139 if (!ar) {
140 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
141 exit(1);
142 }
143 return ar;
144 }
145
146 static int opt_audio_codec(void *optctx, const char *opt, const char *arg)
147 {
148 OptionsContext *o = optctx;
149 return parse_option(o, "codec:a", arg, options);
150 }
151
152 static int opt_video_codec(void *optctx, const char *opt, const char *arg)
153 {
154 OptionsContext *o = optctx;
155 return parse_option(o, "codec:v", arg, options);
156 }
157
158 static int opt_subtitle_codec(void *optctx, const char *opt, const char *arg)
159 {
160 OptionsContext *o = optctx;
161 return parse_option(o, "codec:s", arg, options);
162 }
163
164 static int opt_data_codec(void *optctx, const char *opt, const char *arg)
165 {
166 OptionsContext *o = optctx;
167 return parse_option(o, "codec:d", arg, options);
168 }
169
170 static int opt_map(void *optctx, const char *opt, const char *arg)
171 {
172 OptionsContext *o = optctx;
173 StreamMap *m = NULL;
174 int i, negative = 0, file_idx;
175 int sync_file_idx = -1, sync_stream_idx;
176 char *p, *sync;
177 char *map;
178
179 if (*arg == '-') {
180 negative = 1;
181 arg++;
182 }
183 map = av_strdup(arg);
184
185 /* parse sync stream first, just pick first matching stream */
186 if (sync = strchr(map, ',')) {
187 *sync = 0;
188 sync_file_idx = strtol(sync + 1, &sync, 0);
189 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
190 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
191 exit(1);
192 }
193 if (*sync)
194 sync++;
195 for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
196 if (check_stream_specifier(input_files[sync_file_idx]->ctx,
197 input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
198 sync_stream_idx = i;
199 break;
200 }
201 if (i == input_files[sync_file_idx]->nb_streams) {
202 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
203 "match any streams.\n", arg);
204 exit(1);
205 }
206 }
207
208
209 if (map[0] == '[') {
210 /* this mapping refers to lavfi output */
211 const char *c = map + 1;
212 GROW_ARRAY(o->stream_maps, o->nb_stream_maps);
213 m = &o->stream_maps[o->nb_stream_maps - 1];
214 m->linklabel = av_get_token(&c, "]");
215 if (!m->linklabel) {
216 av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
217 exit(1);
218 }
219 } else {
220 file_idx = strtol(map, &p, 0);
221 if (file_idx >= nb_input_files || file_idx < 0) {
222 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
223 exit(1);
224 }
225 if (negative)
226 /* disable some already defined maps */
227 for (i = 0; i < o->nb_stream_maps; i++) {
228 m = &o->stream_maps[i];
229 if (file_idx == m->file_index &&
230 check_stream_specifier(input_files[m->file_index]->ctx,
231 input_files[m->file_index]->ctx->streams[m->stream_index],
232 *p == ':' ? p + 1 : p) > 0)
233 m->disabled = 1;
234 }
235 else
236 for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
237 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
238 *p == ':' ? p + 1 : p) <= 0)
239 continue;
240 GROW_ARRAY(o->stream_maps, o->nb_stream_maps);
241 m = &o->stream_maps[o->nb_stream_maps - 1];
242
243 m->file_index = file_idx;
244 m->stream_index = i;
245
246 if (sync_file_idx >= 0) {
247 m->sync_file_index = sync_file_idx;
248 m->sync_stream_index = sync_stream_idx;
249 } else {
250 m->sync_file_index = file_idx;
251 m->sync_stream_index = i;
252 }
253 }
254 }
255
256 if (!m) {
257 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
258 exit(1);
259 }
260
261 av_freep(&map);
262 return 0;
263 }
264
265 static int opt_attach(void *optctx, const char *opt, const char *arg)
266 {
267 OptionsContext *o = optctx;
268 GROW_ARRAY(o->attachments, o->nb_attachments);
269 o->attachments[o->nb_attachments - 1] = arg;
270 return 0;
271 }
272
273 /**
274 * Parse a metadata specifier passed as 'arg' parameter.
275 * @param arg metadata string to parse
276 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
277 * @param index for type c/p, chapter/program index is written here
278 * @param stream_spec for type s, the stream specifier is written here
279 */
280 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
281 {
282 if (*arg) {
283 *type = *arg;
284 switch (*arg) {
285 case 'g':
286 break;
287 case 's':
288 if (*(++arg) && *arg != ':') {
289 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
290 exit(1);
291 }
292 *stream_spec = *arg == ':' ? arg + 1 : "";
293 break;
294 case 'c':
295 case 'p':
296 if (*(++arg) == ':')
297 *index = strtol(++arg, NULL, 0);
298 break;
299 default:
300 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
301 exit(1);
302 }
303 } else
304 *type = 'g';
305 }
306
307 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
308 {
309 AVDictionary **meta_in = NULL;
310 AVDictionary **meta_out;
311 int i, ret = 0;
312 char type_in, type_out;
313 const char *istream_spec = NULL, *ostream_spec = NULL;
314 int idx_in = 0, idx_out = 0;
315
316 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
317 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
318
319 if (type_in == 'g' || type_out == 'g')
320 o->metadata_global_manual = 1;
321 if (type_in == 's' || type_out == 's')
322 o->metadata_streams_manual = 1;
323 if (type_in == 'c' || type_out == 'c')
324 o->metadata_chapters_manual = 1;
325
326 /* ic is NULL when just disabling automatic mappings */
327 if (!ic)
328 return 0;
329
330 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
331 if ((index) < 0 || (index) >= (nb_elems)) {\
332 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
333 (desc), (index));\
334 exit(1);\
335 }
336
337 #define SET_DICT(type, meta, context, index)\
338 switch (type) {\
339 case 'g':\
340 meta = &context->metadata;\
341 break;\
342 case 'c':\
343 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
344 meta = &context->chapters[index]->metadata;\
345 break;\
346 case 'p':\
347 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
348 meta = &context->programs[index]->metadata;\
349 break;\
350 case 's':\
351 break; /* handled separately below */ \
352 default: av_assert0(0);\
353 }\
354
355 SET_DICT(type_in, meta_in, ic, idx_in);
356 SET_DICT(type_out, meta_out, oc, idx_out);
357
358 /* for input streams choose first matching stream */
359 if (type_in == 's') {
360 for (i = 0; i < ic->nb_streams; i++) {
361 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
362 meta_in = &ic->streams[i]->metadata;
363 break;
364 } else if (ret < 0)
365 exit(1);
366 }
367 if (!meta_in) {
368 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
369 exit(1);
370 }
371 }
372
373 if (type_out == 's') {
374 for (i = 0; i < oc->nb_streams; i++) {
375 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
376 meta_out = &oc->streams[i]->metadata;
377 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
378 } else if (ret < 0)
379 exit(1);
380 }
381 } else
382 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
383
384 return 0;
385 }
386
387 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
388 {
389 const AVCodecDescriptor *desc;
390 const char *codec_string = encoder ? "encoder" : "decoder";
391 AVCodec *codec;
392
393 codec = encoder ?
394 avcodec_find_encoder_by_name(name) :
395 avcodec_find_decoder_by_name(name);
396
397 if (!codec && (desc = avcodec_descriptor_get_by_name(name))) {
398 codec = encoder ? avcodec_find_encoder(desc->id) :
399 avcodec_find_decoder(desc->id);
400 if (codec)
401 av_log(NULL, AV_LOG_VERBOSE, "Matched %s '%s' for codec '%s'.\n",
402 codec_string, codec->name, desc->name);
403 }
404
405 if (!codec) {
406 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
407 exit(1);
408 }
409 if (codec->type != type) {
410 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
411 exit(1);
412 }
413 return codec;
414 }
415
416 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
417 {
418 char *codec_name = NULL;
419
420 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
421 if (codec_name) {
422 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
423 st->codec->codec_id = codec->id;
424 return codec;
425 } else
426 return avcodec_find_decoder(st->codec->codec_id);
427 }
428
429 /* Add all the streams from the given input file to the global
430 * list of input streams. */
431 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
432 {
433 int i;
434
435 for (i = 0; i < ic->nb_streams; i++) {
436 AVStream *st = ic->streams[i];
437 AVCodecContext *dec = st->codec;
438 InputStream *ist = av_mallocz(sizeof(*ist));
439 char *framerate = NULL;
440
441 if (!ist)
442 exit(1);
443
444 GROW_ARRAY(input_streams, nb_input_streams);
445 input_streams[nb_input_streams - 1] = ist;
446
447 ist->st = st;
448 ist->file_index = nb_input_files;
449 ist->discard = 1;
450 st->discard = AVDISCARD_ALL;
451
452 ist->ts_scale = 1.0;
453 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
454
455 ist->dec = choose_decoder(o, ic, st);
456 ist->opts = filter_codec_opts(o->g->codec_opts, ist->st->codec->codec_id, ic, st, ist->dec);
457
458 switch (dec->codec_type) {
459 case AVMEDIA_TYPE_VIDEO:
460 ist->resample_height = dec->height;
461 ist->resample_width = dec->width;
462 ist->resample_pix_fmt = dec->pix_fmt;
463
464 MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
465 if (framerate && av_parse_video_rate(&ist->framerate,
466 framerate) < 0) {
467 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
468 framerate);
469 exit(1);
470 }
471
472 break;
473 case AVMEDIA_TYPE_AUDIO:
474 guess_input_channel_layout(ist);
475
476 ist->resample_sample_fmt = dec->sample_fmt;
477 ist->resample_sample_rate = dec->sample_rate;
478 ist->resample_channels = dec->channels;
479 ist->resample_channel_layout = dec->channel_layout;
480
481 break;
482 case AVMEDIA_TYPE_DATA:
483 case AVMEDIA_TYPE_SUBTITLE:
484 case AVMEDIA_TYPE_ATTACHMENT:
485 case AVMEDIA_TYPE_UNKNOWN:
486 break;
487 default:
488 abort();
489 }
490 }
491 }
492
493 static void assert_file_overwrite(const char *filename)
494 {
495 if (!file_overwrite &&
496 (strchr(filename, ':') == NULL || filename[1] == ':' ||
497 av_strstart(filename, "file:", NULL))) {
498 if (avio_check(filename, 0) == 0) {
499 if (!using_stdin) {
500 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
501 fflush(stderr);
502 if (!read_yesno()) {
503 fprintf(stderr, "Not overwriting - exiting\n");
504 exit(1);
505 }
506 }
507 else {
508 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
509 exit(1);
510 }
511 }
512 }
513 }
514
515 static void dump_attachment(AVStream *st, const char *filename)
516 {
517 int ret;
518 AVIOContext *out = NULL;
519 AVDictionaryEntry *e;
520
521 if (!st->codec->extradata_size) {
522 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
523 nb_input_files - 1, st->index);
524 return;
525 }
526 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
527 filename = e->value;
528 if (!*filename) {
529 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
530 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
531 exit(1);
532 }
533
534 assert_file_overwrite(filename);
535
536 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
537 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
538 filename);
539 exit(1);
540 }
541
542 avio_write(out, st->codec->extradata, st->codec->extradata_size);
543 avio_flush(out);
544 avio_close(out);
545 }
546
547 static int open_input_file(OptionsContext *o, const char *filename)
548 {
549 AVFormatContext *ic;
550 AVInputFormat *file_iformat = NULL;
551 int err, i, ret;
552 int64_t timestamp;
553 uint8_t buf[128];
554 AVDictionary **opts;
555 int orig_nb_streams; // number of streams before avformat_find_stream_info
556
557 if (o->format) {
558 if (!(file_iformat = av_find_input_format(o->format))) {
559 av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
560 exit(1);
561 }
562 }
563
564 if (!strcmp(filename, "-"))
565 filename = "pipe:";
566
567 using_stdin |= !strncmp(filename, "pipe:", 5) ||
568 !strcmp(filename, "/dev/stdin");
569
570 /* get default parameters from command line */
571 ic = avformat_alloc_context();
572 if (!ic) {
573 print_error(filename, AVERROR(ENOMEM));
574 exit(1);
575 }
576 if (o->nb_audio_sample_rate) {
577 snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
578 av_dict_set(&o->g->format_opts, "sample_rate", buf, 0);
579 }
580 if (o->nb_audio_channels) {
581 /* because we set audio_channels based on both the "ac" and
582 * "channel_layout" options, we need to check that the specified
583 * demuxer actually has the "channels" option before setting it */
584 if (file_iformat && file_iformat->priv_class &&
585 av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
586 AV_OPT_SEARCH_FAKE_OBJ)) {
587 snprintf(buf, sizeof(buf), "%d",
588 o->audio_channels[o->nb_audio_channels - 1].u.i);
589 av_dict_set(&o->g->format_opts, "channels", buf, 0);
590 }
591 }
592 if (o->nb_frame_rates) {
593 /* set the format-level framerate option;
594 * this is important for video grabbers, e.g. x11 */
595 if (file_iformat && file_iformat->priv_class &&
596 av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
597 AV_OPT_SEARCH_FAKE_OBJ)) {
598 av_dict_set(&o->g->format_opts, "framerate",
599 o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
600 }
601 }
602 if (o->nb_frame_sizes) {
603 av_dict_set(&o->g->format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
604 }
605 if (o->nb_frame_pix_fmts)
606 av_dict_set(&o->g->format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
607
608 ic->flags |= AVFMT_FLAG_NONBLOCK;
609 ic->interrupt_callback = int_cb;
610
611 /* open the input file with generic libav function */
612 err = avformat_open_input(&ic, filename, file_iformat, &o->g->format_opts);
613 if (err < 0) {
614 print_error(filename, err);
615 exit(1);
616 }
617 assert_avoptions(o->g->format_opts);
618
619 /* apply forced codec ids */
620 for (i = 0; i < ic->nb_streams; i++)
621 choose_decoder(o, ic, ic->streams[i]);
622
623 /* Set AVCodecContext options for avformat_find_stream_info */
624 opts = setup_find_stream_info_opts(ic, o->g->codec_opts);
625 orig_nb_streams = ic->nb_streams;
626
627 /* If not enough info to get the stream parameters, we decode the
628 first frames to get it. (used in mpeg case for example) */
629 ret = avformat_find_stream_info(ic, opts);
630 if (ret < 0) {
631 av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
632 avformat_close_input(&ic);
633 exit(1);
634 }
635
636 timestamp = o->start_time;
637 /* add the stream start time */
638 if (ic->start_time != AV_NOPTS_VALUE)
639 timestamp += ic->start_time;
640
641 /* if seeking requested, we execute it */
642 if (o->start_time != 0) {
643 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
644 if (ret < 0) {
645 av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
646 filename, (double)timestamp / AV_TIME_BASE);
647 }
648 }
649
650 /* update the current parameters so that they match the one of the input stream */
651 add_input_streams(o, ic);
652
653 /* dump the file content */
654 av_dump_format(ic, nb_input_files, filename, 0);
655
656 GROW_ARRAY(input_files, nb_input_files);
657 if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
658 exit(1);
659
660 input_files[nb_input_files - 1]->ctx = ic;
661 input_files[nb_input_files - 1]->ist_index = nb_input_streams - ic->nb_streams;
662 input_files[nb_input_files - 1]->ts_offset = o->input_ts_offset - (copy_ts ? 0 : timestamp);
663 input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
664 input_files[nb_input_files - 1]->rate_emu = o->rate_emu;
665
666 for (i = 0; i < o->nb_dump_attachment; i++) {
667 int j;
668
669 for (j = 0; j < ic->nb_streams; j++) {
670 AVStream *st = ic->streams[j];
671
672 if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
673 dump_attachment(st, o->dump_attachment[i].u.str);
674 }
675 }
676
677 for (i = 0; i < orig_nb_streams; i++)
678 av_dict_free(&opts[i]);
679 av_freep(&opts);
680
681 return 0;
682 }
683
684 static uint8_t *get_line(AVIOContext *s)
685 {
686 AVIOContext *line;
687 uint8_t *buf;
688 char c;
689
690 if (avio_open_dyn_buf(&line) < 0) {
691 av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
692 exit(1);
693 }
694
695 while ((c = avio_r8(s)) && c != '\n')
696 avio_w8(line, c);
697 avio_w8(line, 0);
698 avio_close_dyn_buf(line, &buf);
699
700 return buf;
701 }
702
703 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
704 {
705 int i, ret = 1;
706 char filename[1000];
707 const char *base[3] = { getenv("AVCONV_DATADIR"),
708 getenv("HOME"),
709 AVCONV_DATADIR,
710 };
711
712 for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
713 if (!base[i])
714 continue;
715 if (codec_name) {
716 snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
717 i != 1 ? "" : "/.avconv", codec_name, preset_name);
718 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
719 }
720 if (ret) {
721 snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
722 i != 1 ? "" : "/.avconv", preset_name);
723 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
724 }
725 }
726 return ret;
727 }
728
729 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
730 {
731 char *codec_name = NULL;
732
733 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
734 if (!codec_name) {
735 ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
736 NULL, ost->st->codec->codec_type);
737 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
738 } else if (!strcmp(codec_name, "copy"))
739 ost->stream_copy = 1;
740 else {
741 ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
742 ost->st->codec->codec_id = ost->enc->id;
743 }
744 }
745
746 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
747 {
748 OutputStream *ost;
749 AVStream *st = avformat_new_stream(oc, NULL);
750 int idx = oc->nb_streams - 1, ret = 0;
751 char *bsf = NULL, *next, *codec_tag = NULL;
752 AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
753 double qscale = -1;
754
755 if (!st) {
756 av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
757 exit(1);
758 }
759
760 if (oc->nb_streams - 1 < o->nb_streamid_map)
761 st->id = o->streamid_map[oc->nb_streams - 1];
762
763 GROW_ARRAY(output_streams, nb_output_streams);
764 if (!(ost = av_mallocz(sizeof(*ost))))
765 exit(1);
766 output_streams[nb_output_streams - 1] = ost;
767
768 ost->file_index = nb_output_files;
769 ost->index = idx;
770 ost->st = st;
771 st->codec->codec_type = type;
772 choose_encoder(o, oc, ost);
773 if (ost->enc) {
774 AVIOContext *s = NULL;
775 char *buf = NULL, *arg = NULL, *preset = NULL;
776
777 ost->opts = filter_codec_opts(o->g->codec_opts, ost->enc->id, oc, st, ost->enc);
778
779 MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
780 if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
781 do {
782 buf = get_line(s);
783 if (!buf[0] || buf[0] == '#') {
784 av_free(buf);
785 continue;
786 }
787 if (!(arg = strchr(buf, '='))) {
788 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
789 exit(1);
790 }
791 *arg++ = 0;
792 av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
793 av_free(buf);
794 } while (!s->eof_reached);
795 avio_close(s);
796 }
797 if (ret) {
798 av_log(NULL, AV_LOG_FATAL,
799 "Preset %s specified for stream %d:%d, but could not be opened.\n",
800 preset, ost->file_index, ost->index);
801 exit(1);
802 }
803 }
804
805 avcodec_get_context_defaults3(st->codec, ost->enc);
806 st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
807
808 ost->max_frames = INT64_MAX;
809 MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
810
811 MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
812 while (bsf) {
813 if (next = strchr(bsf, ','))
814 *next++ = 0;
815 if (!(bsfc = av_bitstream_filter_init(bsf))) {
816 av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
817 exit(1);
818 }
819 if (bsfc_prev)
820 bsfc_prev->next = bsfc;
821 else
822 ost->bitstream_filters = bsfc;
823
824 bsfc_prev = bsfc;
825 bsf = next;
826 }
827
828 MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
829 if (codec_tag) {
830 uint32_t tag = strtol(codec_tag, &next, 0);
831 if (*next)
832 tag = AV_RL32(codec_tag);
833 st->codec->codec_tag = tag;
834 }
835
836 MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
837 if (qscale >= 0) {
838 st->codec->flags |= CODEC_FLAG_QSCALE;
839 st->codec->global_quality = FF_QP2LAMBDA * qscale;
840 }
841
842 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
843 st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
844
845 av_opt_get_int(o->g->sws_opts, "sws_flags", 0, &ost->sws_flags);
846
847 ost->pix_fmts[0] = ost->pix_fmts[1] = AV_PIX_FMT_NONE;
848
849 return ost;
850 }
851
852 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
853 {
854 int i;
855 const char *p = str;
856 for (i = 0;; i++) {
857 dest[i] = atoi(p);
858 if (i == 63)
859 break;
860 p = strchr(p, ',');
861 if (!p) {
862 av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
863 exit(1);
864 }
865 p++;
866 }
867 }
868
869 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
870 {
871 AVStream *st;
872 OutputStream *ost;
873 AVCodecContext *video_enc;
874
875 ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
876 st = ost->st;
877 video_enc = st->codec;
878
879 if (!ost->stream_copy) {
880 const char *p = NULL;
881 char *frame_rate = NULL, *frame_size = NULL;
882 char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
883 char *intra_matrix = NULL, *inter_matrix = NULL;
884 const char *filters = "null";
885 int do_pass = 0;
886 int i;
887
888 MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
889 if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
890 av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
891 exit(1);
892 }
893
894 MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
895 if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
896 av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
897 exit(1);
898 }
899
900 MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
901 if (frame_aspect_ratio)
902 ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
903
904 MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
905 if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == AV_PIX_FMT_NONE) {
906 av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
907 exit(1);
908 }
909 st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
910
911 MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
912 if (intra_matrix) {
913 if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
914 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
915 exit(1);
916 }
917 parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
918 }
919 MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
920 if (inter_matrix) {
921 if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
922 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
923 exit(1);
924 }
925 parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
926 }
927
928 MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
929 for (i = 0; p; i++) {
930 int start, end, q;
931 int e = sscanf(p, "%d,%d,%d", &start, &end, &q);
932 if (e != 3) {
933 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
934 exit(1);
935 }
936 video_enc->rc_override =
937 av_realloc(video_enc->rc_override,
938 sizeof(RcOverride) * (i + 1));
939 video_enc->rc_override[i].start_frame = start;
940 video_enc->rc_override[i].end_frame = end;
941 if (q > 0) {
942 video_enc->rc_override[i].qscale = q;
943 video_enc->rc_override[i].quality_factor = 1.0;
944 }
945 else {
946 video_enc->rc_override[i].qscale = 0;
947 video_enc->rc_override[i].quality_factor = -q/100.0;
948 }
949 p = strchr(p, '/');
950 if (p) p++;
951 }
952 video_enc->rc_override_count = i;
953 if (!video_enc->rc_initial_buffer_occupancy)
954 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size * 3 / 4;
955 video_enc->intra_dc_precision = intra_dc_precision - 8;
956
957 /* two pass mode */
958 MATCH_PER_STREAM_OPT(pass, i, do_pass, oc, st);
959 if (do_pass) {
960 if (do_pass == 1) {
961 video_enc->flags |= CODEC_FLAG_PASS1;
962 } else {
963 video_enc->flags |= CODEC_FLAG_PASS2;
964 }
965 }
966
967 MATCH_PER_STREAM_OPT(passlogfiles, str, ost->logfile_prefix, oc, st);
968 if (ost->logfile_prefix &&
969 !(ost->logfile_prefix = av_strdup(ost->logfile_prefix)))
970 exit(1);
971
972 MATCH_PER_STREAM_OPT(forced_key_frames, str, ost->forced_keyframes, oc, st);
973 if (ost->forced_keyframes)
974 ost->forced_keyframes = av_strdup(ost->forced_keyframes);
975
976 MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
977
978 ost->top_field_first = -1;
979 MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
980
981 MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
982 ost->avfilter = av_strdup(filters);
983 } else {
984 MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
985 }
986
987 return ost;
988 }
989
990 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
991 {
992 AVStream *st;
993 OutputStream *ost;
994 AVCodecContext *audio_enc;
995
996 ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
997 st = ost->st;
998
999 audio_enc = st->codec;
1000 audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
1001
1002 if (!ost->stream_copy) {
1003 char *sample_fmt = NULL;
1004 const char *filters = "anull";
1005
1006 MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
1007
1008 MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
1009 if (sample_fmt &&
1010 (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
1011 av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
1012 exit(1);
1013 }
1014
1015 MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
1016
1017 MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
1018 ost->avfilter = av_strdup(filters);
1019 }
1020
1021 return ost;
1022 }
1023
1024 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
1025 {
1026 OutputStream *ost;
1027
1028 ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
1029 if (!ost->stream_copy) {
1030 av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
1031 exit(1);
1032 }
1033
1034 return ost;
1035 }
1036
1037 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
1038 {
1039 OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
1040 ost->stream_copy = 1;
1041 return ost;
1042 }
1043
1044 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
1045 {
1046 AVStream *st;
1047 OutputStream *ost;
1048 AVCodecContext *subtitle_enc;
1049
1050 ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
1051 st = ost->st;
1052 subtitle_enc = st->codec;
1053
1054 subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
1055
1056 return ost;
1057 }
1058
1059 /* arg format is "output-stream-index:streamid-value". */
1060 static int opt_streamid(void *optctx, const char *opt, const char *arg)
1061 {
1062 OptionsContext *o = optctx;
1063 int idx;
1064 char *p;
1065 char idx_str[16];
1066
1067 av_strlcpy(idx_str, arg, sizeof(idx_str));
1068 p = strchr(idx_str, ':');
1069 if (!p) {
1070 av_log(NULL, AV_LOG_FATAL,
1071 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
1072 arg, opt);
1073 exit(1);
1074 }
1075 *p++ = '\0';
1076 idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
1077 o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
1078 o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
1079 return 0;
1080 }
1081
1082 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
1083 {
1084 AVFormatContext *is = ifile->ctx;
1085 AVFormatContext *os = ofile->ctx;
1086 AVChapter **tmp;
1087 int i;
1088
1089 tmp = av_realloc(os->chapters, sizeof(*os->chapters) * (is->nb_chapters + os->nb_chapters));
1090 if (!tmp)
1091 return AVERROR(ENOMEM);
1092 os->chapters = tmp;
1093
1094 for (i = 0; i < is->nb_chapters; i++) {
1095 AVChapter *in_ch = is->chapters[i], *out_ch;
1096 int64_t ts_off = av_rescale_q(ofile->start_time - ifile->ts_offset,
1097 AV_TIME_BASE_Q, in_ch->time_base);
1098 int64_t rt = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
1099 av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1100
1101
1102 if (in_ch->end < ts_off)
1103 continue;
1104 if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1105 break;
1106
1107 out_ch = av_mallocz(sizeof(AVChapter));
1108 if (!out_ch)
1109 return AVERROR(ENOMEM);
1110
1111 out_ch->id = in_ch->id;
1112 out_ch->time_base = in_ch->time_base;
1113 out_ch->start = FFMAX(0, in_ch->start - ts_off);
1114 out_ch->end = FFMIN(rt, in_ch->end - ts_off);
1115
1116 if (copy_metadata)
1117 av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
1118
1119 os->chapters[os->nb_chapters++] = out_ch;
1120 }
1121 return 0;
1122 }
1123
1124 static void init_output_filter(OutputFilter *ofilter, OptionsContext *o,
1125 AVFormatContext *oc)
1126 {
1127 OutputStream *ost;
1128
1129 switch (avfilter_pad_get_type(ofilter->out_tmp->filter_ctx->output_pads,
1130 ofilter->out_tmp->pad_idx)) {
1131 case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc); break;
1132 case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc); break;
1133 default:
1134 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters are supported "
1135 "currently.\n");
1136 exit(1);
1137 }
1138
1139 ost->source_index = -1;
1140 ost->filter = ofilter;
1141
1142 ofilter->ost = ost;
1143
1144 if (ost->stream_copy) {
1145 av_log(NULL, AV_LOG_ERROR, "Streamcopy requested for output stream %d:%d, "
1146 "which is fed from a complex filtergraph. Filtering and streamcopy "
1147 "cannot be used together.\n", ost->file_index, ost->index);
1148 exit(1);
1149 }
1150
1151 if (configure_output_filter(ofilter->graph, ofilter, ofilter->out_tmp) < 0) {
1152 av_log(NULL, AV_LOG_FATAL, "Error configuring filter.\n");
1153 exit(1);
1154 }
1155 avfilter_inout_free(&ofilter->out_tmp);
1156 }
1157
1158 static int configure_complex_filters(void)
1159 {
1160 int i, ret = 0;
1161
1162 for (i = 0; i < nb_filtergraphs; i++)
1163 if (!filtergraphs[i]->graph &&
1164 (ret = configure_filtergraph(filtergraphs[i])) < 0)
1165 return ret;
1166 return 0;
1167 }
1168
1169 static int open_output_file(OptionsContext *o, const char *filename)
1170 {
1171 AVFormatContext *oc;
1172 int i, j, err;
1173 AVOutputFormat *file_oformat;
1174 OutputStream *ost;
1175 InputStream *ist;
1176
1177 if (configure_complex_filters() < 0) {
1178 av_log(NULL, AV_LOG_FATAL, "Error configuring filters.\n");
1179 exit(1);
1180 }
1181
1182 if (!strcmp(filename, "-"))
1183 filename = "pipe:";
1184
1185 oc = avformat_alloc_context();
1186 if (!oc) {
1187 print_error(filename, AVERROR(ENOMEM));
1188 exit(1);
1189 }
1190
1191 if (o->format) {
1192 file_oformat = av_guess_format(o->format, NULL, NULL);
1193 if (!file_oformat) {
1194 av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
1195 exit(1);
1196 }
1197 } else {
1198 file_oformat = av_guess_format(NULL, filename, NULL);
1199 if (!file_oformat) {
1200 av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
1201 filename);
1202 exit(1);
1203 }
1204 }
1205
1206 oc->oformat = file_oformat;
1207 oc->interrupt_callback = int_cb;
1208 av_strlcpy(oc->filename, filename, sizeof(oc->filename));
1209
1210 /* create streams for all unlabeled output pads */
1211 for (i = 0; i < nb_filtergraphs; i++) {
1212 FilterGraph *fg = filtergraphs[i];
1213 for (j = 0; j < fg->nb_outputs; j++) {
1214 OutputFilter *ofilter = fg->outputs[j];
1215
1216 if (!ofilter->out_tmp || ofilter->out_tmp->name)
1217 continue;
1218
1219 switch (avfilter_pad_get_type(ofilter->out_tmp->filter_ctx->output_pads,
1220 ofilter->out_tmp->pad_idx)) {
1221 case AVMEDIA_TYPE_VIDEO: o->video_disable = 1; break;
1222 case AVMEDIA_TYPE_AUDIO: o->audio_disable = 1; break;
1223 case AVMEDIA_TYPE_SUBTITLE: o->subtitle_disable = 1; break;
1224 }
1225 init_output_filter(ofilter, o, oc);
1226 }
1227 }
1228
1229 if (!o->nb_stream_maps) {
1230 /* pick the "best" stream of each type */
1231 #define NEW_STREAM(type, index)\
1232 if (index >= 0) {\
1233 ost = new_ ## type ## _stream(o, oc);\
1234 ost->source_index = index;\
1235 ost->sync_ist = input_streams[index];\
1236 input_streams[index]->discard = 0;\
1237 input_streams[index]->st->discard = AVDISCARD_NONE;\
1238 }
1239
1240 /* video: highest resolution */
1241 if (!o->video_disable && oc->oformat->video_codec != AV_CODEC_ID_NONE) {
1242 int area = 0, idx = -1;
1243 for (i = 0; i < nb_input_streams; i++) {
1244 ist = input_streams[i];
1245 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1246 ist->st->codec->width * ist->st->codec->height > area) {
1247 area = ist->st->codec->width * ist->st->codec->height;
1248 idx = i;
1249 }
1250 }
1251 NEW_STREAM(video, idx);
1252 }
1253
1254 /* audio: most channels */
1255 if (!o->audio_disable && oc->oformat->audio_codec != AV_CODEC_ID_NONE) {
1256 int channels = 0, idx = -1;
1257 for (i = 0; i < nb_input_streams; i++) {
1258 ist = input_streams[i];
1259 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1260 ist->st->codec->channels > channels) {
1261 channels = ist->st->codec->channels;
1262 idx = i;
1263 }
1264 }
1265 NEW_STREAM(audio, idx);
1266 }
1267
1268 /* subtitles: pick first */
1269 if (!o->subtitle_disable && oc->oformat->subtitle_codec != AV_CODEC_ID_NONE) {
1270 for (i = 0; i < nb_input_streams; i++)
1271 if (input_streams[i]->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1272 NEW_STREAM(subtitle, i);
1273 break;
1274 }
1275 }
1276 /* do something with data? */
1277 } else {
1278 for (i = 0; i < o->nb_stream_maps; i++) {
1279 StreamMap *map = &o->stream_maps[i];
1280
1281 if (map->disabled)
1282 continue;
1283
1284 if (map->linklabel) {
1285 FilterGraph *fg;
1286 OutputFilter *ofilter = NULL;
1287 int j, k;
1288
1289 for (j = 0; j < nb_filtergraphs; j++) {
1290 fg = filtergraphs[j];
1291 for (k = 0; k < fg->nb_outputs; k++) {
1292 AVFilterInOut *out = fg->outputs[k]->out_tmp;
1293 if (out && !strcmp(out->name, map->linklabel)) {
1294 ofilter = fg->outputs[k];
1295 goto loop_end;
1296 }
1297 }
1298 }
1299 loop_end:
1300 if (!ofilter) {
1301 av_log(NULL, AV_LOG_FATAL, "Output with label '%s' does not exist "
1302 "in any defined filter graph.\n", map->linklabel);
1303 exit(1);
1304 }
1305 init_output_filter(ofilter, o, oc);
1306 } else {
1307 ist = input_streams[input_files[map->file_index]->ist_index + map->stream_index];
1308 switch (ist->st->codec->codec_type) {
1309 case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc); break;
1310 case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc); break;
1311 case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
1312 case AVMEDIA_TYPE_DATA: ost = new_data_stream(o, oc); break;
1313 case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
1314 default:
1315 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
1316 map->file_index, map->stream_index);
1317 exit(1);
1318 }
1319
1320 ost->source_index = input_files[map->file_index]->ist_index + map->stream_index;
1321 ost->sync_ist = input_streams[input_files[map->sync_file_index]->ist_index +
1322 map->sync_stream_index];
1323 ist->discard = 0;
1324 ist->st->discard = AVDISCARD_NONE;
1325 }
1326 }
1327 }
1328
1329 /* handle attached files */
1330 for (i = 0; i < o->nb_attachments; i++) {
1331 AVIOContext *pb;
1332 uint8_t *attachment;
1333 const char *p;
1334 int64_t len;
1335
1336 if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
1337 av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
1338 o->attachments[i]);
1339 exit(1);
1340 }
1341 if ((len = avio_size(pb)) <= 0) {
1342 av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
1343 o->attachments[i]);
1344 exit(1);
1345 }
1346 if (!(attachment = av_malloc(len))) {
1347 av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
1348 o->attachments[i]);
1349 exit(1);
1350 }
1351 avio_read(pb, attachment, len);
1352
1353 ost = new_attachment_stream(o, oc);
1354 ost->stream_copy = 0;
1355 ost->source_index = -1;
1356 ost->attachment_filename = o->attachments[i];
1357 ost->st->codec->extradata = attachment;
1358 ost->st->codec->extradata_size = len;
1359
1360 p = strrchr(o->attachments[i], '/');
1361 av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
1362 avio_close(pb);
1363 }
1364
1365 GROW_ARRAY(output_files, nb_output_files);
1366 if (!(output_files[nb_output_files - 1] = av_mallocz(sizeof(*output_files[0]))))
1367 exit(1);
1368
1369 output_files[nb_output_files - 1]->ctx = oc;
1370 output_files[nb_output_files - 1]->ost_index = nb_output_streams - oc->nb_streams;
1371 output_files[nb_output_files - 1]->recording_time = o->recording_time;
1372 if (o->recording_time != INT64_MAX)
1373 oc->duration = o->recording_time;
1374 output_files[nb_output_files - 1]->start_time = o->start_time;
1375 output_files[nb_output_files - 1]->limit_filesize = o->limit_filesize;
1376 output_files[nb_output_files - 1]->shortest = o->shortest;
1377 av_dict_copy(&output_files[nb_output_files - 1]->opts, o->g->format_opts, 0);
1378
1379 /* check filename in case of an image number is expected */
1380 if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
1381 if (!av_filename_number_test(oc->filename)) {
1382 print_error(oc->filename, AVERROR(EINVAL));
1383 exit(1);
1384 }
1385 }
1386
1387 if (!(oc->oformat->flags & AVFMT_NOFILE)) {
1388 /* test if it already exists to avoid losing precious files */
1389 assert_file_overwrite(filename);
1390
1391 /* open the file */
1392 if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
1393 &oc->interrupt_callback,
1394 &output_files[nb_output_files - 1]->opts)) < 0) {
1395 print_error(filename, err);
1396 exit(1);
1397 }
1398 }
1399
1400 if (o->mux_preload) {
1401 uint8_t buf[64];
1402 snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
1403 av_dict_set(&output_files[nb_output_files - 1]->opts, "preload", buf, 0);
1404 }
1405 oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
1406 oc->flags |= AVFMT_FLAG_NONBLOCK;
1407
1408 /* copy metadata */
1409 for (i = 0; i < o->nb_metadata_map; i++) {
1410 char *p;
1411 int in_file_index = strtol(o->metadata_map[i].u.str, &p, 0);
1412
1413 if (in_file_index >= nb_input_files) {
1414 av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d while processing metadata maps\n", in_file_index);
1415 exit(1);
1416 }
1417 copy_metadata(o->metadata_map[i].specifier, *p ? p + 1 : p, oc,
1418 in_file_index >= 0 ?
1419 input_files[in_file_index]->ctx : NULL, o);
1420 }
1421
1422 /* copy chapters */
1423 if (o->chapters_input_file >= nb_input_files) {
1424 if (o->chapters_input_file == INT_MAX) {
1425 /* copy chapters from the first input file that has them*/
1426 o->chapters_input_file = -1;
1427 for (i = 0; i < nb_input_files; i++)
1428 if (input_files[i]->ctx->nb_chapters) {
1429 o->chapters_input_file = i;
1430 break;
1431 }
1432 } else {
1433 av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
1434 o->chapters_input_file);
1435 exit(1);
1436 }
1437 }
1438 if (o->chapters_input_file >= 0)
1439 copy_chapters(input_files[o->chapters_input_file], output_files[nb_output_files - 1],
1440 !o->metadata_chapters_manual);
1441
1442 /* copy global metadata by default */
1443 if (!o->metadata_global_manual && nb_input_files)
1444 av_dict_copy(&oc->metadata, input_files[0]->ctx->metadata,
1445 AV_DICT_DONT_OVERWRITE);
1446 if (!o->metadata_streams_manual)
1447 for (i = output_files[nb_output_files - 1]->ost_index; i < nb_output_streams; i++) {
1448 InputStream *ist;
1449 if (output_streams[i]->source_index < 0) /* this is true e.g. for attached files */
1450 continue;
1451 ist = input_streams[output_streams[i]->source_index];
1452 av_dict_copy(&output_streams[i]->st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
1453 }
1454
1455 /* process manually set metadata */
1456 for (i = 0; i < o->nb_metadata; i++) {
1457 AVDictionary **m;
1458 char type, *val;
1459 const char *stream_spec;
1460 int index = 0, j, ret;
1461
1462 val = strchr(o->metadata[i].u.str, '=');
1463 if (!val) {
1464 av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
1465 o->metadata[i].u.str);
1466 exit(1);
1467 }
1468 *val++ = 0;
1469
1470 parse_meta_type(o->metadata[i].specifier, &type, &index, &stream_spec);
1471 if (type == 's') {
1472 for (j = 0; j < oc->nb_streams; j++) {
1473 if ((ret = check_stream_specifier(oc, oc->streams[j], stream_spec)) > 0) {
1474 av_dict_set(&oc->streams[j]->metadata, o->metadata[i].u.str, *val ? val : NULL, 0);
1475 } else if (ret < 0)
1476 exit(1);
1477 }
1478 }
1479 else {
1480 switch (type) {
1481 case 'g':
1482 m = &oc->metadata;
1483 break;
1484 case 'c':
1485 if (index < 0 || index >= oc->nb_chapters) {
1486 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
1487 exit(1);
1488 }
1489 m = &oc->chapters[index]->metadata;
1490 break;
1491 default:
1492 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
1493 exit(1);
1494 }
1495 av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
1496 }
1497 }
1498
1499 return 0;
1500 }
1501
1502 static int opt_target(void *optctx, const char *opt, const char *arg)
1503 {
1504 OptionsContext *o = optctx;
1505 enum { PAL, NTSC, FILM, UNKNOWN } norm = UNKNOWN;
1506 static const char *const frame_rates[] = { "25", "30000/1001", "24000/1001" };
1507
1508 if (!strncmp(arg, "pal-", 4)) {
1509 norm = PAL;
1510 arg += 4;
1511 } else if (!strncmp(arg, "ntsc-", 5)) {
1512 norm = NTSC;
1513 arg += 5;
1514 } else if (!strncmp(arg, "film-", 5)) {
1515 norm = FILM;
1516 arg += 5;
1517 } else {
1518 /* Try to determine PAL/NTSC by peeking in the input files */
1519 if (nb_input_files) {
1520 int i, j, fr;
1521 for (j = 0; j < nb_input_files; j++) {
1522 for (i = 0; i < input_files[j]->nb_streams; i++) {
1523 AVCodecContext *c = input_files[j]->ctx->streams[i]->codec;
1524 if (c->codec_type != AVMEDIA_TYPE_VIDEO)
1525 continue;
1526 fr = c->time_base.den * 1000 / c->time_base.num;
1527 if (fr == 25000) {
1528 norm = PAL;
1529 break;
1530 } else if ((fr == 29970) || (fr == 23976)) {
1531 norm = NTSC;
1532 break;
1533 }
1534 }
1535 if (norm != UNKNOWN)
1536 break;
1537 }
1538 }
1539 if (norm != UNKNOWN)
1540 av_log(NULL, AV_LOG_INFO, "Assuming %s for target.\n", norm == PAL ? "PAL" : "NTSC");
1541 }
1542
1543 if (norm == UNKNOWN) {
1544 av_log(NULL, AV_LOG_FATAL, "Could not determine norm (PAL/NTSC/NTSC-Film) for target.\n");
1545 av_log(NULL, AV_LOG_FATAL, "Please prefix target with \"pal-\", \"ntsc-\" or \"film-\",\n");
1546 av_log(NULL, AV_LOG_FATAL, "or set a framerate with \"-r xxx\".\n");
1547 exit(1);
1548 }
1549
1550 if (!strcmp(arg, "vcd")) {
1551 opt_video_codec(o, "c:v", "mpeg1video");
1552 opt_audio_codec(o, "c:a", "mp2");
1553 parse_option(o, "f", "vcd", options);
1554
1555 parse_option(o, "s", norm == PAL ? "352x288" : "352x240", options);
1556 parse_option(o, "r", frame_rates[norm], options);
1557 opt_default(NULL, "g", norm == PAL ? "15" : "18");
1558
1559 opt_default(NULL, "b", "1150000");
1560 opt_default(NULL, "maxrate", "1150000");
1561 opt_default(NULL, "minrate", "1150000");
1562 opt_default(NULL, "bufsize", "327680"); // 40*1024*8;
1563
1564 opt_default(NULL, "b:a", "224000");
1565 parse_option(o, "ar", "44100", options);
1566 parse_option(o, "ac", "2", options);
1567
1568 opt_default(NULL, "packetsize", "2324");
1569 opt_default(NULL, "muxrate", "1411200"); // 2352 * 75 * 8;
1570
1571 /* We have to offset the PTS, so that it is consistent with the SCR.
1572 SCR starts at 36000, but the first two packs contain only padding
1573 and the first pack from the other stream, respectively, may also have
1574 been written before.
1575 So the real data starts at SCR 36000+3*1200. */
1576 o->mux_preload = (36000 + 3 * 1200) / 90000.0; // 0.44
1577 } else if (!strcmp(arg, "svcd")) {
1578
1579 opt_video_codec(o, "c:v", "mpeg2video");
1580 opt_audio_codec(o, "c:a", "mp2");
1581 parse_option(o, "f", "svcd", options);
1582
1583 parse_option(o, "s", norm == PAL ? "480x576" : "480x480", options);
1584 parse_option(o, "r", frame_rates[norm], options);
1585 opt_default(NULL, "g", norm == PAL ? "15" : "18");
1586
1587 opt_default(NULL, "b", "2040000");
1588 opt_default(NULL, "maxrate", "2516000");
1589 opt_default(NULL, "minrate", "0"); // 1145000;
1590 opt_default(NULL, "bufsize", "1835008"); // 224*1024*8;
1591 opt_default(NULL, "flags", "+scan_offset");
1592
1593
1594 opt_default(NULL, "b:a", "224000");
1595 parse_option(o, "ar", "44100", options);
1596
1597 opt_default(NULL, "packetsize", "2324");
1598
1599 } else if (!strcmp(arg, "dvd")) {
1600
1601 opt_video_codec(o, "c:v", "mpeg2video");
1602 opt_audio_codec(o, "c:a", "ac3");
1603 parse_option(o, "f", "dvd", options);
1604
1605 parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
1606 parse_option(o, "r", frame_rates[norm], options);
1607 opt_default(NULL, "g", norm == PAL ? "15" : "18");
1608
1609 opt_default(NULL, "b", "6000000");
1610 opt_default(NULL, "maxrate", "9000000");
1611 opt_default(NULL, "minrate", "0"); // 1500000;
1612 opt_default(NULL, "bufsize", "1835008"); // 224*1024*8;
1613
1614 opt_default(NULL, "packetsize", "2048"); // from www.mpucoder.com: DVD sectors contain 2048 bytes of data, this is also the size of one pack.
1615 opt_default(NULL, "muxrate", "10080000"); // from mplex project: data_rate = 1260000. mux_rate = data_rate * 8
1616
1617 opt_default(NULL, "b:a", "448000");
1618 parse_option(o, "ar", "48000", options);
1619
1620 } else if (!strncmp(arg, "dv", 2)) {
1621
1622 parse_option(o, "f", "dv", options);
1623
1624 parse_option(o, "s", norm == PAL ? "720x576" : "720x480", options);
1625 parse_option(o, "pix_fmt", !strncmp(arg, "dv50", 4) ? "yuv422p" :
1626 norm == PAL ? "yuv420p" : "yuv411p", options);
1627 parse_option(o, "r", frame_rates[norm], options);
1628
1629 parse_option(o, "ar", "48000", options);
1630 parse_option(o, "ac", "2", options);
1631
1632 } else {
1633 av_log(NULL, AV_LOG_ERROR, "Unknown target: %s\n", arg);
1634 return AVERROR(EINVAL);
1635 }
1636 return 0;
1637 }
1638
1639 static int opt_vstats_file(void *optctx, const char *opt, const char *arg)
1640 {
1641 av_free (vstats_filename);
1642 vstats_filename = av_strdup (arg);
1643 return 0;
1644 }
1645
1646 static int opt_vstats(void *optctx, const char *opt, const char *arg)
1647 {
1648 char filename[40];
1649 time_t today2 = time(NULL);
1650 struct tm *today = localtime(&today2);
1651
1652 snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour, today->tm_min,
1653 today->tm_sec);
1654 return opt_vstats_file(NULL, opt, filename);
1655 }
1656
1657 static int opt_video_frames(void *optctx, const char *opt, const char *arg)
1658 {
1659 OptionsContext *o = optctx;
1660 return parse_option(o, "frames:v", arg, options);
1661 }
1662
1663 static int opt_audio_frames(void *optctx, const char *opt, const char *arg)
1664 {
1665 OptionsContext *o = optctx;
1666 return parse_option(o, "frames:a", arg, options);
1667 }
1668
1669 static int opt_data_frames(void *optctx, const char *opt, const char *arg)
1670 {
1671 OptionsContext *o = optctx;
1672 return parse_option(o, "frames:d", arg, options);
1673 }
1674
1675 static int opt_video_tag(void *optctx, const char *opt, const char *arg)
1676 {
1677 OptionsContext *o = optctx;
1678 return parse_option(o, "tag:v", arg, options);
1679 }
1680
1681 static int opt_audio_tag(void *optctx, const char *opt, const char *arg)
1682 {
1683 OptionsContext *o = optctx;
1684 return parse_option(o, "tag:a", arg, options);
1685 }
1686
1687 static int opt_subtitle_tag(void *optctx, const char *opt, const char *arg)
1688 {
1689 OptionsContext *o = optctx;
1690 return parse_option(o, "tag:s", arg, options);
1691 }
1692
1693 static int opt_video_filters(void *optctx, const char *opt, const char *arg)
1694 {
1695 OptionsContext *o = optctx;
1696 return parse_option(o, "filter:v", arg, options);
1697 }
1698
1699 static int opt_audio_filters(void *optctx, const char *opt, const char *arg)
1700 {
1701 OptionsContext *o = optctx;
1702 return parse_option(o, "filter:a", arg, options);
1703 }
1704
1705 static int opt_vsync(void *optctx, const char *opt, const char *arg)
1706 {
1707 if (!av_strcasecmp(arg, "cfr")) video_sync_method = VSYNC_CFR;
1708 else if (!av_strcasecmp(arg, "vfr")) video_sync_method = VSYNC_VFR;
1709 else if (!av_strcasecmp(arg, "passthrough")) video_sync_method = VSYNC_PASSTHROUGH;
1710
1711 if (video_sync_method == VSYNC_AUTO)
1712 video_sync_method = parse_number_or_die("vsync", arg, OPT_INT, VSYNC_AUTO, VSYNC_VFR);
1713 return 0;
1714 }
1715
1716 static int opt_deinterlace(void *optctx, const char *opt, const char *arg)
1717 {
1718 av_log(NULL, AV_LOG_WARNING, "-%s is deprecated, use -filter:v yadif instead\n", opt);
1719 do_deinterlace = 1;
1720 return 0;
1721 }
1722
1723 int opt_cpuflags(void *optctx, const char *opt, const char *arg)
1724 {
1725 int flags = av_parse_cpu_flags(arg);
1726
1727 if (flags < 0)
1728 return flags;
1729
1730 av_set_cpu_flags_mask(flags);
1731 return 0;
1732 }
1733
1734 static int opt_channel_layout(void *optctx, const char *opt, const char *arg)
1735 {
1736 OptionsContext *o = optctx;
1737 char layout_str[32];
1738 char *stream_str;
1739 char *ac_str;
1740 int ret, channels, ac_str_size;
1741 uint64_t layout;
1742
1743 layout = av_get_channel_layout(arg);
1744 if (!layout) {
1745 av_log(NULL, AV_LOG_ERROR, "Unknown channel layout: %s\n", arg);
1746 return AVERROR(EINVAL);
1747 }
1748 snprintf(layout_str, sizeof(layout_str), "%"PRIu64, layout);
1749 ret = opt_default(NULL, opt, layout_str);
1750 if (ret < 0)
1751 return ret;
1752
1753 /* set 'ac' option based on channel layout */
1754 channels = av_get_channel_layout_nb_channels(layout);
1755 snprintf(layout_str, sizeof(layout_str), "%d", channels);
1756 stream_str = strchr(opt, ':');
1757 ac_str_size = 3 + (stream_str ? strlen(stream_str) : 0);
1758 ac_str = av_mallocz(ac_str_size);
1759 if (!ac_str)
1760 return AVERROR(ENOMEM);
1761 av_strlcpy(ac_str, "ac", 3);
1762 if (stream_str)
1763 av_strlcat(ac_str, stream_str, ac_str_size);
1764 ret = parse_option(o, ac_str, layout_str, options);
1765 av_free(ac_str);
1766
1767 return ret;
1768 }
1769
1770 static int opt_audio_qscale(void *optctx, const char *opt, const char *arg)
1771 {
1772 OptionsContext *o = optctx;
1773 return parse_option(o, "q:a", arg, options);
1774 }
1775
1776 static int opt_filter_complex(void *optctx, const char *opt, const char *arg)
1777 {
1778 GROW_ARRAY(filtergraphs, nb_filtergraphs);
1779 if (!(filtergraphs[nb_filtergraphs - 1] = av_mallocz(sizeof(*filtergraphs[0]))))
1780 return AVERROR(ENOMEM);
1781 filtergraphs[nb_filtergraphs - 1]->index = nb_filtergraphs - 1;
1782 filtergraphs[nb_filtergraphs - 1]->graph_desc = arg;
1783 return 0;
1784 }
1785
1786 void show_help_default(const char *opt, const char *arg)
1787 {
1788 /* per-file options have at least one of those set */
1789 const int per_file = OPT_SPEC | OPT_OFFSET | OPT_PERFILE;
1790 int show_advanced = 0, show_avoptions = 0;
1791
1792 if (opt && *opt) {
1793 if (!strcmp(opt, "long"))
1794 show_advanced = 1;
1795 else if (!strcmp(opt, "full"))
1796 show_advanced = show_avoptions = 1;
1797 else
1798 av_log(NULL, AV_LOG_ERROR, "Unknown help option '%s'.\n", opt);
1799 }
1800
1801 show_usage();
1802
1803 printf("Getting help:\n"
1804 " -h -- print basic options\n"
1805 " -h long -- print more options\n"
1806 " -h full -- print all options (including all format and codec specific options, very long)\n"
1807 " See man %s for detailed description of the options.\n"
1808 "\n", program_name);
1809
1810 show_help_options(options, "Print help / information / capabilities:",
1811 OPT_EXIT, 0, 0);
1812
1813 show_help_options(options, "Global options (affect whole program "
1814 "instead of just one file:",
1815 0, per_file | OPT_EXIT | OPT_EXPERT, 0);
1816 if (show_advanced)
1817 show_help_options(options, "Advanced global options:", OPT_EXPERT,
1818 per_file | OPT_EXIT, 0);
1819
1820 show_help_options(options, "Per-file main options:", 0,
1821 OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE |
1822 OPT_EXIT, per_file);
1823 if (show_advanced)
1824 show_help_options(options, "Advanced per-file options:",
1825 OPT_EXPERT, OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE, per_file);
1826
1827 show_help_options(options, "Video options:",
1828 OPT_VIDEO, OPT_EXPERT | OPT_AUDIO, 0);
1829 if (show_advanced)
1830 show_help_options(options, "Advanced Video options:",
1831 OPT_EXPERT | OPT_VIDEO, OPT_AUDIO, 0);
1832
1833 show_help_options(options, "Audio options:",
1834 OPT_AUDIO, OPT_EXPERT | OPT_VIDEO, 0);
1835 if (show_advanced)
1836 show_help_options(options, "Advanced Audio options:",
1837 OPT_EXPERT | OPT_AUDIO, OPT_VIDEO, 0);
1838 show_help_options(options, "Subtitle options:",
1839 OPT_SUBTITLE, 0, 0);
1840 printf("\n");
1841
1842 if (show_avoptions) {
1843 int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM;
1844 show_help_children(avcodec_get_class(), flags);
1845 show_help_children(avformat_get_class(), flags);
1846 show_help_children(sws_get_class(), flags);
1847 }
1848 }
1849
1850 void show_usage(void)
1851 {
1852 printf("Hyper fast Audio and Video encoder\n");
1853 printf("usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
1854 printf("\n");
1855 }
1856
1857 enum OptGroup {
1858 GROUP_OUTFILE,
1859 GROUP_INFILE,
1860 };
1861
1862 static const OptionGroupDef groups[] = {
1863 [GROUP_OUTFILE] = { "output file", NULL },
1864 [GROUP_INFILE] = { "input file", "i" },
1865 };
1866
1867 static int open_files(OptionGroupList *l, const char *inout,
1868 int (*open_file)(OptionsContext*, const char*))
1869 {
1870 int i, ret;
1871
1872 for (i = 0; i < l->nb_groups; i++) {
1873 OptionGroup *g = &l->groups[i];
1874 OptionsContext o;
1875
1876 init_options(&o);
1877 o.g = g;
1878
1879 ret = parse_optgroup(&o, g);
1880 if (ret < 0) {
1881 av_log(NULL, AV_LOG_ERROR, "Error parsing options for %s file "
1882 "%s.\n", inout, g->arg);
1883 return ret;
1884 }
1885
1886 av_log(NULL, AV_LOG_DEBUG, "Opening an %s file: %s.\n", inout, g->arg);
1887 ret = open_file(&o, g->arg);
1888 uninit_options(&o);
1889 if (ret < 0) {
1890 av_log(NULL, AV_LOG_ERROR, "Error opening %s file %s.\n",
1891 inout, g->arg);
1892 return ret;
1893 }
1894 av_log(NULL, AV_LOG_DEBUG, "Successfully openened the file.\n");
1895 }
1896
1897 return 0;
1898 }
1899
1900 int avconv_parse_options(int argc, char **argv)
1901 {
1902 OptionParseContext octx;
1903 uint8_t error[128];
1904 int ret;
1905
1906 memset(&octx, 0, sizeof(octx));
1907
1908 /* split the commandline into an internal representation */
1909 ret = split_commandline(&octx, argc, argv, options, groups,
1910 FF_ARRAY_ELEMS(groups));
1911 if (ret < 0) {
1912 av_log(NULL, AV_LOG_FATAL, "Error splitting the argument list: ");
1913 goto fail;
1914 }
1915
1916 /* apply global options */
1917 ret = parse_optgroup(NULL, &octx.global_opts);
1918 if (ret < 0) {
1919 av_log(NULL, AV_LOG_FATAL, "Error parsing global options: ");
1920 goto fail;
1921 }
1922
1923 /* open input files */
1924 ret = open_files(&octx.groups[GROUP_INFILE], "input", open_input_file);
1925 if (ret < 0) {
1926 av_log(NULL, AV_LOG_FATAL, "Error opening input files: ");
1927 goto fail;
1928 }
1929
1930 /* open output files */
1931 ret = open_files(&octx.groups[GROUP_OUTFILE], "output", open_output_file);
1932 if (ret < 0) {
1933 av_log(NULL, AV_LOG_FATAL, "Error opening output files: ");
1934 goto fail;
1935 }
1936
1937 fail:
1938 uninit_parse_context(&octx);
1939 if (ret < 0) {
1940 av_strerror(ret, error, sizeof(error));
1941 av_log(NULL, AV_LOG_FATAL, "%s\n", error);
1942 }
1943 return ret;
1944 }
1945
1946 #define OFFSET(x) offsetof(OptionsContext, x)
1947 const OptionDef options[] = {
1948 /* main options */
1949 #include "cmdutils_common_opts.h"
1950 { "f", HAS_ARG | OPT_STRING | OPT_OFFSET, { .off = OFFSET(format) },
1951 "force format", "fmt" },
1952 { "y", OPT_BOOL, { &file_overwrite },
1953 "overwrite output files" },
1954 { "c", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(codec_names) },
1955 "codec name", "codec" },
1956 { "codec", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(codec_names) },
1957 "codec name", "codec" },
1958 { "pre", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(presets) },
1959 "preset name", "preset" },
1960 { "map", HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_map },
1961 "set input stream mapping",
1962 "[-]input_file_id[:stream_specifier][,sync_file_id[:stream_specifier]]" },
1963 { "map_metadata", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(metadata_map) },
1964 "set metadata information of outfile from infile",
1965 "outfile[,metadata]:infile[,metadata]" },
1966 { "map_chapters", HAS_ARG | OPT_INT | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(chapters_input_file) },
1967 "set chapters mapping", "input_file_index" },
1968 { "t", HAS_ARG | OPT_TIME | OPT_OFFSET, { .off = OFFSET(recording_time) },
1969 "record or transcode \"duration\" seconds of audio/video",
1970 "duration" },
1971 { "fs", HAS_ARG | OPT_INT64 | OPT_OFFSET, { .off = OFFSET(limit_filesize) },
1972 "set the limit file size in bytes", "limit_size" },
1973 { "ss", HAS_ARG | OPT_TIME | OPT_OFFSET, { .off = OFFSET(start_time) },
1974 "set the start time offset", "time_off" },
1975 { "itsoffset", HAS_ARG | OPT_TIME | OPT_OFFSET | OPT_EXPERT,{ .off = OFFSET(input_ts_offset) },
1976 "set the input ts offset", "time_off" },
1977 { "itsscale", HAS_ARG | OPT_DOUBLE | OPT_SPEC | OPT_EXPERT,{ .off = OFFSET(ts_scale) },
1978 "set the input ts scale", "scale" },
1979 { "metadata", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(metadata) },
1980 "add metadata", "string=string" },
1981 { "dframes", HAS_ARG | OPT_PERFILE | OPT_EXPERT, { .func_arg = opt_data_frames },
1982 "set the number of data frames to record", "number" },
1983 { "benchmark", OPT_BOOL | OPT_EXPERT, { &do_benchmark },
1984 "add timings for benchmarking" },
1985 { "timelimit", HAS_ARG | OPT_EXPERT, { .func_arg = opt_timelimit },
1986 "set max runtime in seconds", "limit" },
1987 { "dump", OPT_BOOL | OPT_EXPERT, { &do_pkt_dump },
1988 "dump each input packet" },
1989 { "hex", OPT_BOOL | OPT_EXPERT, { &do_hex_dump },
1990 "when dumping packets, also dump the payload" },
1991 { "re", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(rate_emu) },
1992 "read input at native frame rate", "" },
1993 { "target", HAS_ARG | OPT_PERFILE, { .func_arg = opt_target },
1994 "specify target file type (\"vcd\", \"svcd\", \"dvd\","
1995 " \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
1996 { "vsync", HAS_ARG | OPT_EXPERT, { opt_vsync },
1997 "video sync method", "" },
1998 { "async", HAS_ARG | OPT_INT | OPT_EXPERT, { &audio_sync_method },
1999 "audio sync method", "" },
2000 { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, { &audio_drift_threshold },
2001 "audio drift threshold", "threshold" },
2002 { "copyts", OPT_BOOL | OPT_EXPERT, { &copy_ts },
2003 "copy timestamps" },
2004 { "copytb", OPT_BOOL | OPT_EXPERT, { &copy_tb },
2005 "copy input stream time base when stream copying" },
2006 { "shortest", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(shortest) },
2007 "finish encoding within shortest input" },
2008 { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, { &dts_delta_threshold },
2009 "timestamp discontinuity delta threshold", "threshold" },
2010 { "xerror", OPT_BOOL | OPT_EXPERT, { &exit_on_error },
2011 "exit on error", "error" },
2012 { "copyinkf", OPT_BOOL | OPT_EXPERT | OPT_SPEC, { .off = OFFSET(copy_initial_nonkeyframes) },
2013 "copy initial non-keyframes" },
2014 { "frames", OPT_INT64 | HAS_ARG | OPT_SPEC, { .off = OFFSET(max_frames) },
2015 "set the number of frames to record", "number" },
2016 { "tag", OPT_STRING | HAS_ARG | OPT_SPEC | OPT_EXPERT,{ .off = OFFSET(codec_tags) },
2017 "force codec tag/fourcc", "fourcc/tag" },
2018 { "q", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC,{ .off = OFFSET(qscale) },
2019 "use fixed quality scale (VBR)", "q" },
2020 { "qscale", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC,{ .off = OFFSET(qscale) },
2021 "use fixed quality scale (VBR)", "q" },
2022 { "filter", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(filters) },
2023 "set stream filterchain", "filter_list" },
2024 { "filter_complex", HAS_ARG | OPT_EXPERT, { .func_arg = opt_filter_complex },
2025 "create a complex filtergraph", "graph_description" },
2026 { "stats", OPT_BOOL, { &print_stats },
2027 "print progress report during encoding", },
2028 { "attach", HAS_ARG | OPT_PERFILE | OPT_EXPERT, { .func_arg = opt_attach },
2029 "add an attachment to the output file", "filename" },
2030 { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC |OPT_EXPERT,{ .off = OFFSET(dump_attachment) },
2031 "extract an attachment into a file", "filename" },
2032 { "cpuflags", HAS_ARG | OPT_EXPERT, { .func_arg = opt_cpuflags },
2033 "set CPU flags mask", "mask" },
2034
2035 /* video options */
2036 { "vframes", OPT_VIDEO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_video_frames },
2037 "set the number of video frames to record", "number" },
2038 { "r", OPT_VIDEO | HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(frame_rates) },
2039 "set frame rate (Hz value, fraction or abbreviation)", "rate" },
2040 { "s", OPT_VIDEO | HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(frame_sizes) },
2041 "set frame size (WxH or abbreviation)", "size" },
2042 { "aspect", OPT_VIDEO | HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(frame_aspect_ratios) },
2043 "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
2044 { "pix_fmt", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_STRING | OPT_SPEC, { .off = OFFSET(frame_pix_fmts) },
2045 "set pixel format", "format" },
2046 { "vn", OPT_VIDEO | OPT_BOOL | OPT_OFFSET, { .off = OFFSET(video_disable) },
2047 "disable video" },
2048 { "vdt", OPT_VIDEO | OPT_INT | HAS_ARG | OPT_EXPERT , { &video_discard },
2049 "discard threshold", "n" },
2050 { "rc_override", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_STRING | OPT_SPEC, { .off = OFFSET(rc_overrides) },
2051 "rate control override for specific intervals", "override" },
2052 { "vcodec", OPT_VIDEO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_video_codec },
2053 "force video codec ('copy' to copy stream)", "codec" },
2054 { "pass", OPT_VIDEO | HAS_ARG | OPT_SPEC | OPT_INT, { .off = OFFSET(pass) },
2055 "select the pass number (1 or 2)", "n" },
2056 { "passlogfile", OPT_VIDEO | HAS_ARG | OPT_STRING | OPT_EXPERT | OPT_SPEC, { .off = OFFSET(passlogfiles) },
2057 "select two pass log file name prefix", "prefix" },
2058 { "deinterlace", OPT_VIDEO | OPT_EXPERT , { .func_arg = opt_deinterlace },
2059 "this option is deprecated, use the yadif filter instead" },
2060 { "vstats", OPT_VIDEO | OPT_EXPERT , { &opt_vstats },
2061 "dump video coding statistics to file" },
2062 { "vstats_file", OPT_VIDEO | HAS_ARG | OPT_EXPERT , { opt_vstats_file },
2063 "dump video coding statistics to file", "file" },
2064 { "vf", OPT_VIDEO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_video_filters },
2065 "video filters", "filter list" },
2066 { "intra_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_STRING | OPT_SPEC, { .off = OFFSET(intra_matrices) },
2067 "specify intra matrix coeffs", "matrix" },
2068 { "inter_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_STRING | OPT_SPEC, { .off = OFFSET(inter_matrices) },
2069 "specify inter matrix coeffs", "matrix" },
2070 { "top", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_INT| OPT_SPEC, { .off = OFFSET(top_field_first) },
2071 "top=1/bottom=0/auto=-1 field first", "" },
2072 { "dc", OPT_VIDEO | OPT_INT | HAS_ARG | OPT_EXPERT , { &intra_dc_precision },
2073 "intra_dc_precision", "precision" },
2074 { "vtag", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_video_tag },
2075 "force video tag/fourcc", "fourcc/tag" },
2076 { "qphist", OPT_VIDEO | OPT_BOOL | OPT_EXPERT , { &qp_hist },
2077 "show QP histogram" },
2078 { "force_fps", OPT_VIDEO | OPT_BOOL | OPT_EXPERT | OPT_SPEC, { .off = OFFSET(force_fps) },
2079 "force the selected framerate, disable the best supported framerate selection" },
2080 { "streamid", OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_streamid },
2081 "set the value of an outfile streamid", "streamIndex:value" },
2082 { "force_key_frames", OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT | OPT_SPEC,
2083 { .off = OFFSET(forced_key_frames) }, "force key frames at specified timestamps", "timestamps" },
2084
2085 /* audio options */
2086 { "aframes", OPT_AUDIO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_audio_frames },
2087 "set the number of audio frames to record", "number" },
2088 { "aq", OPT_AUDIO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_audio_qscale },
2089 "set audio quality (codec-specific)", "quality", },
2090 { "ar", OPT_AUDIO | HAS_ARG | OPT_INT | OPT_SPEC, { .off = OFFSET(audio_sample_rate) },
2091 "set audio sampling rate (in Hz)", "rate" },
2092 { "ac", OPT_AUDIO | HAS_ARG | OPT_INT | OPT_SPEC, { .off = OFFSET(audio_channels) },
2093 "set number of audio channels", "channels" },
2094 { "an", OPT_AUDIO | OPT_BOOL | OPT_OFFSET, { .off = OFFSET(audio_disable) },
2095 "disable audio" },
2096 { "acodec", OPT_AUDIO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_audio_codec },
2097 "force audio codec ('copy' to copy stream)", "codec" },
2098 { "atag", OPT_AUDIO | HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_audio_tag },
2099 "force audio tag/fourcc", "fourcc/tag" },
2100 { "vol", OPT_AUDIO | HAS_ARG | OPT_INT, { &audio_volume },
2101 "change audio volume (256=normal)" , "volume" },
2102 { "sample_fmt", OPT_AUDIO | HAS_ARG | OPT_EXPERT | OPT_SPEC | OPT_STRING, { .off = OFFSET(sample_fmts) },
2103 "set sample format", "format" },
2104 { "channel_layout", OPT_AUDIO | HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_channel_layout },
2105 "set channel layout", "layout" },
2106 { "af", OPT_AUDIO | HAS_ARG | OPT_PERFILE, { .func_arg = opt_audio_filters },
2107 "audio filters", "filter list" },
2108
2109 /* subtitle options */
2110 { "sn", OPT_SUBTITLE | OPT_BOOL | OPT_OFFSET, { .off = OFFSET(subtitle_disable) },
2111 "disable subtitle" },
2112 { "scodec", OPT_SUBTITLE | HAS_ARG | OPT_PERFILE, { .func_arg = opt_subtitle_codec },
2113 "force subtitle codec ('copy' to copy stream)", "codec" },
2114 { "stag", OPT_SUBTITLE | HAS_ARG | OPT_EXPERT | OPT_PERFILE, { .func_arg = opt_subtitle_tag }
2115 , "force subtitle tag/fourcc", "fourcc/tag" },
2116
2117 /* grab options */
2118 { "isync", OPT_BOOL | OPT_EXPERT, { &input_sync }, "this option is deprecated and does nothing", "" },
2119
2120 /* muxer options */
2121 { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_max_delay) },
2122 "set the maximum demux-decode delay", "seconds" },
2123 { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_preload) },
2124 "set the initial demux-decode delay", "seconds" },
2125
2126 { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC | OPT_EXPERT, { .off = OFFSET(bitstream_filters) },
2127 "A comma-separated list of bitstream filters", "bitstream_filters" },
2128
2129 /* data codec support */
2130 { "dcodec", HAS_ARG | OPT_DATA | OPT_PERFILE | OPT_EXPERT, { .func_arg = opt_data_codec },
2131 "force data codec ('copy' to copy stream)", "codec" },
2132
2133 { NULL, },
2134 };
A couple of patches to make building with MPlayer easier