7abf10d7b0eb42e1e0caada41e1a02771daf61c3
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavresample/avresample.h"
35 #include "libavutil/opt.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/buffersrc.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/vsrc_buffer.h"
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #if HAVE_PTHREADS
72 #include <pthread.h>
73 #endif
74
75 #include <time.h>
76
77 #include "cmdutils.h"
78
79 #include "libavutil/avassert.h"
80
81 #define VSYNC_AUTO -1
82 #define VSYNC_PASSTHROUGH 0
83 #define VSYNC_CFR 1
84 #define VSYNC_VFR 2
85
86 const char program_name[] = "avconv";
87 const int program_birth_year = 2000;
88
89 /* select an input stream for an output stream */
90 typedef struct StreamMap {
91 int disabled; /** 1 is this mapping is disabled by a negative map */
92 int file_index;
93 int stream_index;
94 int sync_file_index;
95 int sync_stream_index;
96 char *linklabel; /** name of an output link, for mapping lavfi outputs */
97 } StreamMap;
98
99 /**
100 * select an input file for an output file
101 */
102 typedef struct MetadataMap {
103 int file; ///< file index
104 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
105 int index; ///< stream/chapter/program number
106 } MetadataMap;
107
108 static const OptionDef options[];
109
110 static int video_discard = 0;
111 static int same_quant = 0;
112 static int do_deinterlace = 0;
113 static int intra_dc_precision = 8;
114 static int qp_hist = 0;
115
116 static int file_overwrite = 0;
117 static int do_benchmark = 0;
118 static int do_hex_dump = 0;
119 static int do_pkt_dump = 0;
120 static int do_pass = 0;
121 static char *pass_logfilename_prefix = NULL;
122 static int video_sync_method = VSYNC_AUTO;
123 static int audio_sync_method = 0;
124 static float audio_drift_threshold = 0.1;
125 static int copy_ts = 0;
126 static int copy_tb = 1;
127 static int opt_shortest = 0;
128 static char *vstats_filename;
129 static FILE *vstats_file;
130
131 static int audio_volume = 256;
132
133 static int exit_on_error = 0;
134 static int using_stdin = 0;
135 static int64_t video_size = 0;
136 static int64_t audio_size = 0;
137 static int64_t extra_size = 0;
138 static int nb_frames_dup = 0;
139 static int nb_frames_drop = 0;
140 static int input_sync;
141
142 static float dts_delta_threshold = 10;
143
144 static int print_stats = 1;
145
146 #if HAVE_PTHREADS
147 /* signal to input threads that they should exit; set by the main thread */
148 static int transcoding_finished;
149 #endif
150
151 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
152
153 typedef struct InputFilter {
154 AVFilterContext *filter;
155 struct InputStream *ist;
156 struct FilterGraph *graph;
157 uint8_t *name;
158 } InputFilter;
159
160 typedef struct OutputFilter {
161 AVFilterContext *filter;
162 struct OutputStream *ost;
163 struct FilterGraph *graph;
164 uint8_t *name;
165
166 /* temporary storage until stream maps are processed */
167 AVFilterInOut *out_tmp;
168 } OutputFilter;
169
170 typedef struct FilterGraph {
171 int index;
172 const char *graph_desc;
173
174 AVFilterGraph *graph;
175
176 InputFilter **inputs;
177 int nb_inputs;
178 OutputFilter **outputs;
179 int nb_outputs;
180 } FilterGraph;
181
182 typedef struct InputStream {
183 int file_index;
184 AVStream *st;
185 int discard; /* true if stream data should be discarded */
186 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
187 AVCodec *dec;
188 AVFrame *decoded_frame;
189
190 int64_t start; /* time when read started */
191 /* predicted dts of the next packet read for this stream or (when there are
192 * several frames in a packet) of the next frame in current packet */
193 int64_t next_dts;
194 /* dts of the last packet read for this stream */
195 int64_t last_dts;
196 PtsCorrectionContext pts_ctx;
197 double ts_scale;
198 int is_start; /* is 1 at the start and after a discontinuity */
199 int showed_multi_packet_warning;
200 AVDictionary *opts;
201 AVRational framerate; /* framerate forced with -r */
202
203 int resample_height;
204 int resample_width;
205 int resample_pix_fmt;
206
207 int resample_sample_fmt;
208 int resample_sample_rate;
209 int resample_channels;
210 uint64_t resample_channel_layout;
211
212 /* a pool of free buffers for decoded data */
213 FrameBuffer *buffer_pool;
214
215 /* decoded data from this stream goes into all those filters
216 * currently video and audio only */
217 InputFilter **filters;
218 int nb_filters;
219 } InputStream;
220
221 typedef struct InputFile {
222 AVFormatContext *ctx;
223 int eof_reached; /* true if eof reached */
224 int ist_index; /* index of first stream in ist_table */
225 int buffer_size; /* current total buffer size */
226 int64_t ts_offset;
227 int nb_streams; /* number of stream that avconv is aware of; may be different
228 from ctx.nb_streams if new streams appear during av_read_frame() */
229 int rate_emu;
230
231 #if HAVE_PTHREADS
232 pthread_t thread; /* thread reading from this file */
233 int finished; /* the thread has exited */
234 int joined; /* the thread has been joined */
235 pthread_mutex_t fifo_lock; /* lock for access to fifo */
236 pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */
237 AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */
238 #endif
239 } InputFile;
240
241 typedef struct OutputStream {
242 int file_index; /* file index */
243 int index; /* stream index in the output file */
244 int source_index; /* InputStream index */
245 AVStream *st; /* stream in the output file */
246 int encoding_needed; /* true if encoding needed for this stream */
247 int frame_number;
248 /* input pts and corresponding output pts
249 for A/V sync */
250 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
251 struct InputStream *sync_ist; /* input stream to sync against */
252 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
253 /* pts of the first frame encoded for this stream, used for limiting
254 * recording time */
255 int64_t first_pts;
256 AVBitStreamFilterContext *bitstream_filters;
257 AVCodec *enc;
258 int64_t max_frames;
259 AVFrame *filtered_frame;
260
261 /* video only */
262 AVRational frame_rate;
263 int force_fps;
264 int top_field_first;
265
266 float frame_aspect_ratio;
267 float last_quality;
268
269 /* forced key frames */
270 int64_t *forced_kf_pts;
271 int forced_kf_count;
272 int forced_kf_index;
273
274 FILE *logfile;
275
276 OutputFilter *filter;
277 char *avfilter;
278
279 int64_t sws_flags;
280 AVDictionary *opts;
281 int is_past_recording_time;
282 int stream_copy;
283 const char *attachment_filename;
284 int copy_initial_nonkeyframes;
285
286 enum PixelFormat pix_fmts[2];
287 } OutputStream;
288
289
290 typedef struct OutputFile {
291 AVFormatContext *ctx;
292 AVDictionary *opts;
293 int ost_index; /* index of the first stream in output_streams */
294 int64_t recording_time; /* desired length of the resulting file in microseconds */
295 int64_t start_time; /* start time in microseconds */
296 uint64_t limit_filesize;
297 } OutputFile;
298
299 static InputStream **input_streams = NULL;
300 static int nb_input_streams = 0;
301 static InputFile **input_files = NULL;
302 static int nb_input_files = 0;
303
304 static OutputStream **output_streams = NULL;
305 static int nb_output_streams = 0;
306 static OutputFile **output_files = NULL;
307 static int nb_output_files = 0;
308
309 static FilterGraph **filtergraphs;
310 int nb_filtergraphs;
311
312 typedef struct OptionsContext {
313 /* input/output options */
314 int64_t start_time;
315 const char *format;
316
317 SpecifierOpt *codec_names;
318 int nb_codec_names;
319 SpecifierOpt *audio_channels;
320 int nb_audio_channels;
321 SpecifierOpt *audio_sample_rate;
322 int nb_audio_sample_rate;
323 SpecifierOpt *frame_rates;
324 int nb_frame_rates;
325 SpecifierOpt *frame_sizes;
326 int nb_frame_sizes;
327 SpecifierOpt *frame_pix_fmts;
328 int nb_frame_pix_fmts;
329
330 /* input options */
331 int64_t input_ts_offset;
332 int rate_emu;
333
334 SpecifierOpt *ts_scale;
335 int nb_ts_scale;
336 SpecifierOpt *dump_attachment;
337 int nb_dump_attachment;
338
339 /* output options */
340 StreamMap *stream_maps;
341 int nb_stream_maps;
342 /* first item specifies output metadata, second is input */
343 MetadataMap (*meta_data_maps)[2];
344 int nb_meta_data_maps;
345 int metadata_global_manual;
346 int metadata_streams_manual;
347 int metadata_chapters_manual;
348 const char **attachments;
349 int nb_attachments;
350
351 int chapters_input_file;
352
353 int64_t recording_time;
354 uint64_t limit_filesize;
355 float mux_preload;
356 float mux_max_delay;
357
358 int video_disable;
359 int audio_disable;
360 int subtitle_disable;
361 int data_disable;
362
363 /* indexed by output file stream index */
364 int *streamid_map;
365 int nb_streamid_map;
366
367 SpecifierOpt *metadata;
368 int nb_metadata;
369 SpecifierOpt *max_frames;
370 int nb_max_frames;
371 SpecifierOpt *bitstream_filters;
372 int nb_bitstream_filters;
373 SpecifierOpt *codec_tags;
374 int nb_codec_tags;
375 SpecifierOpt *sample_fmts;
376 int nb_sample_fmts;
377 SpecifierOpt *qscale;
378 int nb_qscale;
379 SpecifierOpt *forced_key_frames;
380 int nb_forced_key_frames;
381 SpecifierOpt *force_fps;
382 int nb_force_fps;
383 SpecifierOpt *frame_aspect_ratios;
384 int nb_frame_aspect_ratios;
385 SpecifierOpt *rc_overrides;
386 int nb_rc_overrides;
387 SpecifierOpt *intra_matrices;
388 int nb_intra_matrices;
389 SpecifierOpt *inter_matrices;
390 int nb_inter_matrices;
391 SpecifierOpt *top_field_first;
392 int nb_top_field_first;
393 SpecifierOpt *metadata_map;
394 int nb_metadata_map;
395 SpecifierOpt *presets;
396 int nb_presets;
397 SpecifierOpt *copy_initial_nonkeyframes;
398 int nb_copy_initial_nonkeyframes;
399 SpecifierOpt *filters;
400 int nb_filters;
401 } OptionsContext;
402
403 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
404 {\
405 int i, ret;\
406 for (i = 0; i < o->nb_ ## name; i++) {\
407 char *spec = o->name[i].specifier;\
408 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
409 outvar = o->name[i].u.type;\
410 else if (ret < 0)\
411 exit_program(1);\
412 }\
413 }
414
415 static void reset_options(OptionsContext *o)
416 {
417 const OptionDef *po = options;
418 int i;
419
420 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
421 while (po->name) {
422 void *dst = (uint8_t*)o + po->u.off;
423
424 if (po->flags & OPT_SPEC) {
425 SpecifierOpt **so = dst;
426 int i, *count = (int*)(so + 1);
427 for (i = 0; i < *count; i++) {
428 av_freep(&(*so)[i].specifier);
429 if (po->flags & OPT_STRING)
430 av_freep(&(*so)[i].u.str);
431 }
432 av_freep(so);
433 *count = 0;
434 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
435 av_freep(dst);
436 po++;
437 }
438
439 for (i = 0; i < o->nb_stream_maps; i++)
440 av_freep(&o->stream_maps[i].linklabel);
441 av_freep(&o->stream_maps);
442 av_freep(&o->meta_data_maps);
443 av_freep(&o->streamid_map);
444
445 memset(o, 0, sizeof(*o));
446
447 o->mux_max_delay = 0.7;
448 o->recording_time = INT64_MAX;
449 o->limit_filesize = UINT64_MAX;
450 o->chapters_input_file = INT_MAX;
451
452 uninit_opts();
453 init_opts();
454 }
455
456 /**
457 * Define a function for building a string containing a list of
458 * allowed formats,
459 */
460 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
461 static char *choose_ ## var ## s(OutputStream *ost) \
462 { \
463 if (ost->st->codec->var != none) { \
464 get_name(ost->st->codec->var); \
465 return av_strdup(name); \
466 } else if (ost->enc->supported_list) { \
467 const type *p; \
468 AVIOContext *s = NULL; \
469 uint8_t *ret; \
470 int len; \
471 \
472 if (avio_open_dyn_buf(&s) < 0) \
473 exit_program(1); \
474 \
475 for (p = ost->enc->supported_list; *p != none; p++) { \
476 get_name(*p); \
477 avio_printf(s, "%s" separator, name); \
478 } \
479 len = avio_close_dyn_buf(s, &ret); \
480 ret[len - 1] = 0; \
481 return ret; \
482 } else \
483 return NULL; \
484 }
485
486 #define GET_PIX_FMT_NAME(pix_fmt)\
487 const char *name = av_get_pix_fmt_name(pix_fmt);
488
489 DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
490 GET_PIX_FMT_NAME, ":")
491
492 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
493 const char *name = av_get_sample_fmt_name(sample_fmt)
494
495 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
496 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
497
498 #define GET_SAMPLE_RATE_NAME(rate)\
499 char name[16];\
500 snprintf(name, sizeof(name), "%d", rate);
501
502 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
503 GET_SAMPLE_RATE_NAME, ",")
504
505 #define GET_CH_LAYOUT_NAME(ch_layout)\
506 char name[16];\
507 snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
508
509 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
510 GET_CH_LAYOUT_NAME, ",")
511
512 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
513 {
514 FilterGraph *fg = av_mallocz(sizeof(*fg));
515
516 if (!fg)
517 exit_program(1);
518 fg->index = nb_filtergraphs;
519
520 fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
521 fg->nb_outputs + 1);
522 if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
523 exit_program(1);
524 fg->outputs[0]->ost = ost;
525 fg->outputs[0]->graph = fg;
526
527 ost->filter = fg->outputs[0];
528
529 fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
530 fg->nb_inputs + 1);
531 if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
532 exit_program(1);
533 fg->inputs[0]->ist = ist;
534 fg->inputs[0]->graph = fg;
535
536 ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
537 &ist->nb_filters, ist->nb_filters + 1);
538 ist->filters[ist->nb_filters - 1] = fg->inputs[0];
539
540 filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
541 &nb_filtergraphs, nb_filtergraphs + 1);
542 filtergraphs[nb_filtergraphs - 1] = fg;
543
544 return fg;
545 }
546
547 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
548 {
549 InputStream *ist;
550 enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
551 int i;
552
553 // TODO: support other filter types
554 if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
555 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
556 "currently.\n");
557 exit_program(1);
558 }
559
560 if (in->name) {
561 AVFormatContext *s;
562 AVStream *st = NULL;
563 char *p;
564 int file_idx = strtol(in->name, &p, 0);
565
566 if (file_idx < 0 || file_idx >= nb_input_files) {
567 av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
568 file_idx, fg->graph_desc);
569 exit_program(1);
570 }
571 s = input_files[file_idx]->ctx;
572
573 for (i = 0; i < s->nb_streams; i++) {
574 if (s->streams[i]->codec->codec_type != type)
575 continue;
576 if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
577 st = s->streams[i];
578 break;
579 }
580 }
581 if (!st) {
582 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
583 "matches no streams.\n", p, fg->graph_desc);
584 exit_program(1);
585 }
586 ist = input_streams[input_files[file_idx]->ist_index + st->index];
587 } else {
588 /* find the first unused stream of corresponding type */
589 for (i = 0; i < nb_input_streams; i++) {
590 ist = input_streams[i];
591 if (ist->st->codec->codec_type == type && ist->discard)
592 break;
593 }
594 if (i == nb_input_streams) {
595 av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
596 "unlabeled input pad %d on filter %s", in->pad_idx,
597 in->filter_ctx->name);
598 exit_program(1);
599 }
600 }
601 ist->discard = 0;
602 ist->decoding_needed = 1;
603 ist->st->discard = AVDISCARD_NONE;
604
605 fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
606 &fg->nb_inputs, fg->nb_inputs + 1);
607 if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
608 exit_program(1);
609 fg->inputs[fg->nb_inputs - 1]->ist = ist;
610 fg->inputs[fg->nb_inputs - 1]->graph = fg;
611
612 ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
613 &ist->nb_filters, ist->nb_filters + 1);
614 ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
615 }
616
617 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
618 {
619 char *pix_fmts;
620 OutputStream *ost = ofilter->ost;
621 AVCodecContext *codec = ost->st->codec;
622 AVFilterContext *last_filter = out->filter_ctx;
623 int pad_idx = out->pad_idx;
624 int ret;
625
626
627 ret = avfilter_graph_create_filter(&ofilter->filter,
628 avfilter_get_by_name("buffersink"),
629 "out", NULL, pix_fmts, fg->graph);
630 if (ret < 0)
631 return ret;
632
633 if (codec->width || codec->height) {
634 char args[255];
635 AVFilterContext *filter;
636
637 snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
638 codec->width,
639 codec->height,
640 (unsigned)ost->sws_flags);
641 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
642 NULL, args, NULL, fg->graph)) < 0)
643 return ret;
644 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
645 return ret;
646
647 last_filter = filter;
648 pad_idx = 0;
649 }
650
651 if ((pix_fmts = choose_pix_fmts(ost))) {
652 AVFilterContext *filter;
653 if ((ret = avfilter_graph_create_filter(&filter,
654 avfilter_get_by_name("format"),
655 "format", pix_fmts, NULL,
656 fg->graph)) < 0)
657 return ret;
658 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
659 return ret;
660
661 last_filter = filter;
662 pad_idx = 0;
663 av_freep(&pix_fmts);
664 }
665
666 if (ost->frame_rate.num) {
667 AVFilterContext *fps;
668 char args[255];
669
670 snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
671 ost->frame_rate.den);
672 ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
673 "fps", args, NULL, fg->graph);
674 if (ret < 0)
675 return ret;
676
677 ret = avfilter_link(last_filter, pad_idx, fps, 0);
678 if (ret < 0)
679 return ret;
680 last_filter = fps;
681 pad_idx = 0;
682 }
683
684 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
685 return ret;
686
687 return 0;
688 }
689
690 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
691 {
692 OutputStream *ost = ofilter->ost;
693 AVCodecContext *codec = ost->st->codec;
694 AVFilterContext *last_filter = out->filter_ctx;
695 int pad_idx = out->pad_idx;
696 char *sample_fmts, *sample_rates, *channel_layouts;
697 int ret;
698
699 ret = avfilter_graph_create_filter(&ofilter->filter,
700 avfilter_get_by_name("abuffersink"),
701 "out", NULL, NULL, fg->graph);
702 if (ret < 0)
703 return ret;
704
705 if (codec->channels && !codec->channel_layout)
706 codec->channel_layout = av_get_default_channel_layout(codec->channels);
707
708 sample_fmts = choose_sample_fmts(ost);
709 sample_rates = choose_sample_rates(ost);
710 channel_layouts = choose_channel_layouts(ost);
711 if (sample_fmts || sample_rates || channel_layouts) {
712 AVFilterContext *format;
713 char args[256];
714 int len = 0;
715
716 if (sample_fmts)
717 len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
718 sample_fmts);
719 if (sample_rates)
720 len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
721 sample_rates);
722 if (channel_layouts)
723 len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
724 channel_layouts);
725 args[len - 1] = 0;
726
727 av_freep(&sample_fmts);
728 av_freep(&sample_rates);
729 av_freep(&channel_layouts);
730
731 ret = avfilter_graph_create_filter(&format,
732 avfilter_get_by_name("aformat"),
733 "aformat", args, NULL, fg->graph);
734 if (ret < 0)
735 return ret;
736
737 ret = avfilter_link(last_filter, pad_idx, format, 0);
738 if (ret < 0)
739 return ret;
740
741 last_filter = format;
742 pad_idx = 0;
743 }
744
745 if (audio_sync_method > 0) {
746 AVFilterContext *async;
747 char args[256];
748 int len = 0;
749
750 av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
751 "asyncts audio filter instead.\n");
752
753 if (audio_sync_method > 1)
754 len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
755 "max_comp=%d:", audio_sync_method);
756 snprintf(args + len, sizeof(args) - len, "min_delta=%f",
757 audio_drift_threshold);
758
759 ret = avfilter_graph_create_filter(&async,
760 avfilter_get_by_name("asyncts"),
761 "async", args, NULL, fg->graph);
762 if (ret < 0)
763 return ret;
764
765 ret = avfilter_link(last_filter, pad_idx, async, 0);
766 if (ret < 0)
767 return ret;
768
769 last_filter = async;
770 pad_idx = 0;
771 }
772
773 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
774 return ret;
775
776 return 0;
777 }
778
779 #define DESCRIBE_FILTER_LINK(f, inout, in) \
780 { \
781 AVFilterContext *ctx = inout->filter_ctx; \
782 AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \
783 int nb_pads = in ? ctx->input_count : ctx->output_count; \
784 AVIOContext *pb; \
785 \
786 if (avio_open_dyn_buf(&pb) < 0) \
787 exit_program(1); \
788 \
789 avio_printf(pb, "%s", ctx->filter->name); \
790 if (nb_pads > 1) \
791 avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
792 avio_w8(pb, 0); \
793 avio_close_dyn_buf(pb, &f->name); \
794 }
795
796 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
797 {
798 av_freep(&ofilter->name);
799 DESCRIBE_FILTER_LINK(ofilter, out, 0);
800
801 switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
802 case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
803 case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
804 default: av_assert0(0);
805 }
806 }
807
808 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
809 AVFilterInOut *in)
810 {
811 AVFilterContext *first_filter = in->filter_ctx;
812 AVFilter *filter = avfilter_get_by_name("buffer");
813 InputStream *ist = ifilter->ist;
814 AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
815 ist->framerate.num} :
816 ist->st->time_base;
817 AVRational sar;
818 char args[255];
819 int pad_idx = in->pad_idx;
820 int ret;
821
822 sar = ist->st->sample_aspect_ratio.num ?
823 ist->st->sample_aspect_ratio :
824 ist->st->codec->sample_aspect_ratio;
825 snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
826 ist->st->codec->height, ist->st->codec->pix_fmt,
827 tb.num, tb.den, sar.num, sar.den);
828
829 if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
830 args, NULL, fg->graph)) < 0)
831 return ret;
832
833 if (ist->framerate.num) {
834 AVFilterContext *setpts;
835
836 if ((ret = avfilter_graph_create_filter(&setpts,
837 avfilter_get_by_name("setpts"),
838 "setpts", "N", NULL,
839 fg->graph)) < 0)
840 return ret;
841
842 if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
843 return ret;
844
845 first_filter = setpts;
846 pad_idx = 0;
847 }
848
849 if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
850 return ret;
851 return 0;
852 }
853
854 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
855 AVFilterInOut *in)
856 {
857 AVFilterContext *first_filter = in->filter_ctx;
858 AVFilter *filter = avfilter_get_by_name("abuffer");
859 InputStream *ist = ifilter->ist;
860 int pad_idx = in->pad_idx;
861 char args[255];
862 int ret;
863
864 snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
865 ":channel_layout=0x%"PRIx64,
866 ist->st->time_base.num, ist->st->time_base.den,
867 ist->st->codec->sample_rate,
868 av_get_sample_fmt_name(ist->st->codec->sample_fmt),
869 ist->st->codec->channel_layout);
870
871 if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
872 in->name, args, NULL,
873 fg->graph)) < 0)
874 return ret;
875
876 if (audio_sync_method > 0) {
877 AVFilterContext *async;
878 char args[256];
879 int len = 0;
880
881 av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
882 "asyncts audio filter instead.\n");
883
884 if (audio_sync_method > 1)
885 len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
886 "max_comp=%d:", audio_sync_method);
887 snprintf(args + len, sizeof(args) - len, "min_delta=%f",
888 audio_drift_threshold);
889
890 ret = avfilter_graph_create_filter(&async,
891 avfilter_get_by_name("asyncts"),
892 "async", args, NULL, fg->graph);
893 if (ret < 0)
894 return ret;
895
896 ret = avfilter_link(async, 0, first_filter, pad_idx);
897 if (ret < 0)
898 return ret;
899
900 first_filter = async;
901 pad_idx = 0;
902 }
903 if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
904 return ret;
905
906 return 0;
907 }
908
909 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
910 AVFilterInOut *in)
911 {
912 av_freep(&ifilter->name);
913 DESCRIBE_FILTER_LINK(ifilter, in, 1);
914
915 switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
916 case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
917 case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
918 default: av_assert0(0);
919 }
920 }
921
922 static int configure_filtergraph(FilterGraph *fg)
923 {
924 AVFilterInOut *inputs, *outputs, *cur;
925 int ret, i, init = !fg->graph, simple = !fg->graph_desc;
926 const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
927 fg->graph_desc;
928
929 avfilter_graph_free(&fg->graph);
930 if (!(fg->graph = avfilter_graph_alloc()))
931 return AVERROR(ENOMEM);
932
933 if (simple) {
934 OutputStream *ost = fg->outputs[0]->ost;
935 char args[255];
936 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
937 fg->graph->scale_sws_opts = av_strdup(args);
938 }
939
940 if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
941 return ret;
942
943 if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
944 av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
945 "exactly one input and output.\n", graph_desc);
946 return AVERROR(EINVAL);
947 }
948
949 for (cur = inputs; !simple && init && cur; cur = cur->next)
950 init_input_filter(fg, cur);
951
952 for (cur = inputs, i = 0; cur; cur = cur->next, i++)
953 if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
954 return ret;
955 avfilter_inout_free(&inputs);
956
957 if (!init || simple) {
958 /* we already know the mappings between lavfi outputs and output streams,
959 * so we can finish the setup */
960 for (cur = outputs, i = 0; cur; cur = cur->next, i++)
961 configure_output_filter(fg, fg->outputs[i], cur);
962 avfilter_inout_free(&outputs);
963
964 if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
965 return ret;
966 } else {
967 /* wait until output mappings are processed */
968 for (cur = outputs; cur;) {
969 fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
970 &fg->nb_outputs, fg->nb_outputs + 1);
971 if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
972 exit_program(1);
973 fg->outputs[fg->nb_outputs - 1]->graph = fg;
974 fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
975 cur = cur->next;
976 fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
977 }
978 }
979
980 return 0;
981 }
982
983 static int configure_complex_filters(void)
984 {
985 int i, ret = 0;
986
987 for (i = 0; i < nb_filtergraphs; i++)
988 if (!filtergraphs[i]->graph &&
989 (ret = configure_filtergraph(filtergraphs[i])) < 0)
990 return ret;
991 return 0;
992 }
993
994 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
995 {
996 int i;
997 for (i = 0; i < fg->nb_inputs; i++)
998 if (fg->inputs[i]->ist == ist)
999 return 1;
1000 return 0;
1001 }
1002
1003 static void term_exit(void)
1004 {
1005 av_log(NULL, AV_LOG_QUIET, "");
1006 }
1007
1008 static volatile int received_sigterm = 0;
1009 static volatile int received_nb_signals = 0;
1010
1011 static void
1012 sigterm_handler(int sig)
1013 {
1014 received_sigterm = sig;
1015 received_nb_signals++;
1016 term_exit();
1017 }
1018
1019 static void term_init(void)
1020 {
1021 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
1022 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
1023 #ifdef SIGXCPU
1024 signal(SIGXCPU, sigterm_handler);
1025 #endif
1026 }
1027
1028 static int decode_interrupt_cb(void *ctx)
1029 {
1030 return received_nb_signals > 1;
1031 }
1032
1033 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1034
1035 void exit_program(int ret)
1036 {
1037 int i, j;
1038
1039 for (i = 0; i < nb_filtergraphs; i++) {
1040 avfilter_graph_free(&filtergraphs[i]->graph);
1041 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1042 av_freep(&filtergraphs[i]->inputs[j]->name);
1043 av_freep(&filtergraphs[i]->inputs[j]);
1044 }
1045 av_freep(&filtergraphs[i]->inputs);
1046 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1047 av_freep(&filtergraphs[i]->outputs[j]->name);
1048 av_freep(&filtergraphs[i]->outputs[j]);
1049 }
1050 av_freep(&filtergraphs[i]->outputs);
1051 av_freep(&filtergraphs[i]);
1052 }
1053 av_freep(&filtergraphs);
1054
1055 /* close files */
1056 for (i = 0; i < nb_output_files; i++) {
1057 AVFormatContext *s = output_files[i]->ctx;
1058 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1059 avio_close(s->pb);
1060 avformat_free_context(s);
1061 av_dict_free(&output_files[i]->opts);
1062 av_freep(&output_files[i]);
1063 }
1064 for (i = 0; i < nb_output_streams; i++) {
1065 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1066 while (bsfc) {
1067 AVBitStreamFilterContext *next = bsfc->next;
1068 av_bitstream_filter_close(bsfc);
1069 bsfc = next;
1070 }
1071 output_streams[i]->bitstream_filters = NULL;
1072
1073 av_freep(&output_streams[i]->avfilter);
1074 av_freep(&output_streams[i]->filtered_frame);
1075 av_freep(&output_streams[i]);
1076 }
1077 for (i = 0; i < nb_input_files; i++) {
1078 avformat_close_input(&input_files[i]->ctx);
1079 av_freep(&input_files[i]);
1080 }
1081 for (i = 0; i < nb_input_streams; i++) {
1082 av_freep(&input_streams[i]->decoded_frame);
1083 av_dict_free(&input_streams[i]->opts);
1084 free_buffer_pool(&input_streams[i]->buffer_pool);
1085 av_freep(&input_streams[i]->filters);
1086 av_freep(&input_streams[i]);
1087 }
1088
1089 if (vstats_file)
1090 fclose(vstats_file);
1091 av_free(vstats_filename);
1092
1093 av_freep(&input_streams);
1094 av_freep(&input_files);
1095 av_freep(&output_streams);
1096 av_freep(&output_files);
1097
1098 uninit_opts();
1099
1100 avfilter_uninit();
1101 avformat_network_deinit();
1102
1103 if (received_sigterm) {
1104 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1105 (int) received_sigterm);
1106 exit (255);
1107 }
1108
1109 exit(ret);
1110 }
1111
1112 static void assert_avoptions(AVDictionary *m)
1113 {
1114 AVDictionaryEntry *t;
1115 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1116 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1117 exit_program(1);
1118 }
1119 }
1120
1121 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1122 {
1123 const char *codec_string = encoder ? "encoder" : "decoder";
1124 AVCodec *codec;
1125 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1126 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1127 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1128 "results.\nAdd '-strict experimental' if you want to use it.\n",
1129 codec_string, c->codec->name);
1130 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1131 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1132 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1133 codec_string, codec->name);
1134 exit_program(1);
1135 }
1136 }
1137
1138 /**
1139 * Update the requested input sample format based on the output sample format.
1140 * This is currently only used to request float output from decoders which
1141 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
1142 * Ideally this will be removed in the future when decoders do not do format
1143 * conversion and only output in their native format.
1144 */
1145 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
1146 AVCodecContext *enc)
1147 {
1148 /* if sample formats match or a decoder sample format has already been
1149 requested, just return */
1150 if (enc->sample_fmt == dec->sample_fmt ||
1151 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
1152 return;
1153
1154 /* if decoder supports more than one output format */
1155 if (dec_codec && dec_codec->sample_fmts &&
1156 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
1157 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
1158 const enum AVSampleFormat *p;
1159 int min_dec = -1, min_inc = -1;
1160
1161 /* find a matching sample format in the encoder */
1162 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
1163 if (*p == enc->sample_fmt) {
1164 dec->request_sample_fmt = *p;
1165 return;
1166 } else if (*p > enc->sample_fmt) {
1167 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
1168 } else
1169 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
1170 }
1171
1172 /* if none match, provide the one that matches quality closest */
1173 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
1174 enc->sample_fmt - min_dec;
1175 }
1176 }
1177
1178 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1179 {
1180 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1181 AVCodecContext *avctx = ost->st->codec;
1182 int ret;
1183
1184 /*
1185 * Audio encoders may split the packets -- #frames in != #packets out.
1186 * But there is no reordering, so we can limit the number of output packets
1187 * by simply dropping them here.
1188 * Counting encoded video frames needs to be done separately because of
1189 * reordering, see do_video_out()
1190 */
1191 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1192 if (ost->frame_number >= ost->max_frames) {
1193 av_free_packet(pkt);
1194 return;
1195 }
1196 ost->frame_number++;
1197 }
1198
1199 while (bsfc) {
1200 AVPacket new_pkt = *pkt;
1201 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1202 &new_pkt.data, &new_pkt.size,
1203 pkt->data, pkt->size,
1204 pkt->flags & AV_PKT_FLAG_KEY);
1205 if (a > 0) {
1206 av_free_packet(pkt);
1207 new_pkt.destruct = av_destruct_packet;
1208 } else if (a < 0) {
1209 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
1210 bsfc->filter->name, pkt->stream_index,
1211 avctx->codec ? avctx->codec->name : "copy");
1212 print_error("", a);
1213 if (exit_on_error)
1214 exit_program(1);
1215 }
1216 *pkt = new_pkt;
1217
1218 bsfc = bsfc->next;
1219 }
1220
1221 pkt->stream_index = ost->index;
1222 ret = av_interleaved_write_frame(s, pkt);
1223 if (ret < 0) {
1224 print_error("av_interleaved_write_frame()", ret);
1225 exit_program(1);
1226 }
1227 }
1228
1229 static int check_recording_time(OutputStream *ost)
1230 {
1231 OutputFile *of = output_files[ost->file_index];
1232
1233 if (of->recording_time != INT64_MAX &&
1234 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1235 AV_TIME_BASE_Q) >= 0) {
1236 ost->is_past_recording_time = 1;
1237 return 0;
1238 }
1239 return 1;
1240 }
1241
1242 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1243 AVFrame *frame)
1244 {
1245 AVCodecContext *enc = ost->st->codec;
1246 AVPacket pkt;
1247 int got_packet = 0;
1248
1249 av_init_packet(&pkt);
1250 pkt.data = NULL;
1251 pkt.size = 0;
1252
1253 if (!check_recording_time(ost))
1254 return;
1255
1256 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1257 frame->pts = ost->sync_opts;
1258 ost->sync_opts = frame->pts + frame->nb_samples;
1259
1260 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1261 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1262 exit_program(1);
1263 }
1264
1265 if (got_packet) {
1266 if (pkt.pts != AV_NOPTS_VALUE)
1267 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1268 if (pkt.dts != AV_NOPTS_VALUE)
1269 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1270 if (pkt.duration > 0)
1271 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1272
1273 write_frame(s, &pkt, ost);
1274
1275 audio_size += pkt.size;
1276 }
1277 }
1278
1279 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1280 {
1281 AVCodecContext *dec;
1282 AVPicture *picture2;
1283 AVPicture picture_tmp;
1284 uint8_t *buf = 0;
1285
1286 dec = ist->st->codec;
1287
1288 /* deinterlace : must be done before any resize */
1289 if (do_deinterlace) {
1290 int size;
1291
1292 /* create temporary picture */
1293 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1294 buf = av_malloc(size);
1295 if (!buf)
1296 return;
1297
1298 picture2 = &picture_tmp;
1299 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1300
1301 if (avpicture_deinterlace(picture2, picture,
1302 dec->pix_fmt, dec->width, dec->height) < 0) {
1303 /* if error, do not deinterlace */
1304 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1305 av_free(buf);
1306 buf = NULL;
1307 picture2 = picture;
1308 }
1309 } else {
1310 picture2 = picture;
1311 }
1312
1313 if (picture != picture2)
1314 *picture = *picture2;
1315 *bufp = buf;
1316 }
1317
1318 static void do_subtitle_out(AVFormatContext *s,
1319 OutputStream *ost,
1320 InputStream *ist,
1321 AVSubtitle *sub,
1322 int64_t pts)
1323 {
1324 static uint8_t *subtitle_out = NULL;
1325 int subtitle_out_max_size = 1024 * 1024;
1326 int subtitle_out_size, nb, i;
1327 AVCodecContext *enc;
1328 AVPacket pkt;
1329
1330 if (pts == AV_NOPTS_VALUE) {
1331 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1332 if (exit_on_error)
1333 exit_program(1);
1334 return;
1335 }
1336
1337 enc = ost->st->codec;
1338
1339 if (!subtitle_out) {
1340 subtitle_out = av_malloc(subtitle_out_max_size);
1341 }
1342
1343 /* Note: DVB subtitle need one packet to draw them and one other
1344 packet to clear them */
1345 /* XXX: signal it in the codec context ? */
1346 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1347 nb = 2;
1348 else
1349 nb = 1;
1350
1351 for (i = 0; i < nb; i++) {
1352 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1353 if (!check_recording_time(ost))
1354 return;
1355
1356 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1357 // start_display_time is required to be 0
1358 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1359 sub->end_display_time -= sub->start_display_time;
1360 sub->start_display_time = 0;
1361 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1362 subtitle_out_max_size, sub);
1363 if (subtitle_out_size < 0) {
1364 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1365 exit_program(1);
1366 }
1367
1368 av_init_packet(&pkt);
1369 pkt.data = subtitle_out;
1370 pkt.size = subtitle_out_size;
1371 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1372 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1373 /* XXX: the pts correction is handled here. Maybe handling
1374 it in the codec would be better */
1375 if (i == 0)
1376 pkt.pts += 90 * sub->start_display_time;
1377 else
1378 pkt.pts += 90 * sub->end_display_time;
1379 }
1380 write_frame(s, &pkt, ost);
1381 }
1382 }
1383
1384 static void do_video_out(AVFormatContext *s,
1385 OutputStream *ost,
1386 AVFrame *in_picture,
1387 int *frame_size, float quality)
1388 {
1389 int ret, format_video_sync;
1390 AVPacket pkt;
1391 AVCodecContext *enc = ost->st->codec;
1392
1393 *frame_size = 0;
1394
1395 format_video_sync = video_sync_method;
1396 if (format_video_sync == VSYNC_AUTO)
1397 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
1398 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
1399 if (format_video_sync != VSYNC_PASSTHROUGH &&
1400 ost->frame_number &&
1401 in_picture->pts != AV_NOPTS_VALUE &&
1402 in_picture->pts < ost->sync_opts) {
1403 nb_frames_drop++;
1404 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1405 return;
1406 }
1407
1408 if (in_picture->pts == AV_NOPTS_VALUE)
1409 in_picture->pts = ost->sync_opts;
1410 ost->sync_opts = in_picture->pts;
1411
1412
1413 if (!ost->frame_number)
1414 ost->first_pts = in_picture->pts;
1415
1416 av_init_packet(&pkt);
1417 pkt.data = NULL;
1418 pkt.size = 0;
1419
1420 if (!check_recording_time(ost) ||
1421 ost->frame_number >= ost->max_frames)
1422 return;
1423
1424 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1425 enc->codec->id == CODEC_ID_RAWVIDEO) {
1426 /* raw pictures are written as AVPicture structure to
1427 avoid any copies. We support temporarily the older
1428 method. */
1429 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1430 enc->coded_frame->top_field_first = in_picture->top_field_first;
1431 pkt.data = (uint8_t *)in_picture;
1432 pkt.size = sizeof(AVPicture);
1433 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1434 pkt.flags |= AV_PKT_FLAG_KEY;
1435
1436 write_frame(s, &pkt, ost);
1437 } else {
1438 int got_packet;
1439 AVFrame big_picture;
1440
1441 big_picture = *in_picture;
1442 /* better than nothing: use input picture interlaced
1443 settings */
1444 big_picture.interlaced_frame = in_picture->interlaced_frame;
1445 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1446 if (ost->top_field_first == -1)
1447 big_picture.top_field_first = in_picture->top_field_first;
1448 else
1449 big_picture.top_field_first = !!ost->top_field_first;
1450 }
1451
1452 /* handles same_quant here. This is not correct because it may
1453 not be a global option */
1454 big_picture.quality = quality;
1455 if (!enc->me_threshold)
1456 big_picture.pict_type = 0;
1457 if (ost->forced_kf_index < ost->forced_kf_count &&
1458 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1459 big_picture.pict_type = AV_PICTURE_TYPE_I;
1460 ost->forced_kf_index++;
1461 }
1462 ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1463 if (ret < 0) {
1464 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1465 exit_program(1);
1466 }
1467
1468 if (got_packet) {
1469 if (pkt.pts != AV_NOPTS_VALUE)
1470 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1471 if (pkt.dts != AV_NOPTS_VALUE)
1472 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1473
1474 write_frame(s, &pkt, ost);
1475 *frame_size = pkt.size;
1476 video_size += pkt.size;
1477
1478 /* if two pass, output log */
1479 if (ost->logfile && enc->stats_out) {
1480 fprintf(ost->logfile, "%s", enc->stats_out);
1481 }
1482 }
1483 }
1484 ost->sync_opts++;
1485 /*
1486 * For video, number of frames in == number of packets out.
1487 * But there may be reordering, so we can't throw away frames on encoder
1488 * flush, we need to limit them here, before they go into encoder.
1489 */
1490 ost->frame_number++;
1491 }
1492
1493 static double psnr(double d)
1494 {
1495 return -10.0 * log(d) / log(10.0);
1496 }
1497
1498 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1499 int frame_size)
1500 {
1501 AVCodecContext *enc;
1502 int frame_number;
1503 double ti1, bitrate, avg_bitrate;
1504
1505 /* this is executed just the first time do_video_stats is called */
1506 if (!vstats_file) {
1507 vstats_file = fopen(vstats_filename, "w");
1508 if (!vstats_file) {
1509 perror("fopen");
1510 exit_program(1);
1511 }
1512 }
1513
1514 enc = ost->st->codec;
1515 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1516 frame_number = ost->frame_number;
1517 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1518 if (enc->flags&CODEC_FLAG_PSNR)
1519 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1520
1521 fprintf(vstats_file,"f_size= %6d ", frame_size);
1522 /* compute pts value */
1523 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1524 if (ti1 < 0.01)
1525 ti1 = 0.01;
1526
1527 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1528 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1529 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1530 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1531 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1532 }
1533 }
1534
1535 /* check for new output on any of the filtergraphs */
1536 static int poll_filters(void)
1537 {
1538 AVFilterBufferRef *picref;
1539 AVFrame *filtered_frame = NULL;
1540 int i, frame_size;
1541
1542 for (i = 0; i < nb_output_streams; i++) {
1543 OutputStream *ost = output_streams[i];
1544 OutputFile *of = output_files[ost->file_index];
1545 int ret = 0;
1546
1547 if (!ost->filter)
1548 continue;
1549
1550 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1551 return AVERROR(ENOMEM);
1552 } else
1553 avcodec_get_frame_defaults(ost->filtered_frame);
1554 filtered_frame = ost->filtered_frame;
1555
1556 while (ret >= 0 && !ost->is_past_recording_time) {
1557 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1558 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1559 ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1560 ost->st->codec->frame_size);
1561 else
1562 ret = av_buffersink_read(ost->filter->filter, &picref);
1563
1564 if (ret < 0)
1565 break;
1566
1567 avfilter_copy_buf_props(filtered_frame, picref);
1568 if (picref->pts != AV_NOPTS_VALUE)
1569 filtered_frame->pts = av_rescale_q(picref->pts,
1570 ost->filter->filter->inputs[0]->time_base,
1571 ost->st->codec->time_base) -
1572 av_rescale_q(of->start_time,
1573 AV_TIME_BASE_Q,
1574 ost->st->codec->time_base);
1575
1576 if (of->start_time && filtered_frame->pts < of->start_time) {
1577 avfilter_unref_buffer(picref);
1578 continue;
1579 }
1580
1581 switch (ost->filter->filter->inputs[0]->type) {
1582 case AVMEDIA_TYPE_VIDEO:
1583 if (!ost->frame_aspect_ratio)
1584 ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect;
1585
1586 do_video_out(of->ctx, ost, filtered_frame, &frame_size,
1587 same_quant ? ost->last_quality :
1588 ost->st->codec->global_quality);
1589 if (vstats_filename && frame_size)
1590 do_video_stats(of->ctx, ost, frame_size);
1591 break;
1592 case AVMEDIA_TYPE_AUDIO:
1593 do_audio_out(of->ctx, ost, filtered_frame);
1594 break;
1595 default:
1596 // TODO support subtitle filters
1597 av_assert0(0);
1598 }
1599
1600 avfilter_unref_buffer(picref);
1601 }
1602 }
1603 return 0;
1604 }
1605
1606 static void print_report(int is_last_report, int64_t timer_start)
1607 {
1608 char buf[1024];
1609 OutputStream *ost;
1610 AVFormatContext *oc;
1611 int64_t total_size;
1612 AVCodecContext *enc;
1613 int frame_number, vid, i;
1614 double bitrate, ti1, pts;
1615 static int64_t last_time = -1;
1616 static int qp_histogram[52];
1617
1618 if (!print_stats && !is_last_report)
1619 return;
1620
1621 if (!is_last_report) {
1622 int64_t cur_time;
1623 /* display the report every 0.5 seconds */
1624 cur_time = av_gettime();
1625 if (last_time == -1) {
1626 last_time = cur_time;
1627 return;
1628 }
1629 if ((cur_time - last_time) < 500000)
1630 return;
1631 last_time = cur_time;
1632 }
1633
1634
1635 oc = output_files[0]->ctx;
1636
1637 total_size = avio_size(oc->pb);
1638 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1639 total_size = avio_tell(oc->pb);
1640
1641 buf[0] = '\0';
1642 ti1 = 1e10;
1643 vid = 0;
1644 for (i = 0; i < nb_output_streams; i++) {
1645 float q = -1;
1646 ost = output_streams[i];
1647 enc = ost->st->codec;
1648 if (!ost->stream_copy && enc->coded_frame)
1649 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1650 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1651 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1652 }
1653 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1654 float t = (av_gettime() - timer_start) / 1000000.0;
1655
1656 frame_number = ost->frame_number;
1657 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1658 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1659 if (is_last_report)
1660 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1661 if (qp_hist) {
1662 int j;
1663 int qp = lrintf(q);
1664 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1665 qp_histogram[qp]++;
1666 for (j = 0; j < 32; j++)
1667 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1668 }
1669 if (enc->flags&CODEC_FLAG_PSNR) {
1670 int j;
1671 double error, error_sum = 0;
1672 double scale, scale_sum = 0;
1673 char type[3] = { 'Y','U','V' };
1674 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1675 for (j = 0; j < 3; j++) {
1676 if (is_last_report) {
1677 error = enc->error[j];
1678 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1679 } else {
1680 error = enc->coded_frame->error[j];
1681 scale = enc->width * enc->height * 255.0 * 255.0;
1682 }
1683 if (j)
1684 scale /= 4;
1685 error_sum += error;
1686 scale_sum += scale;
1687 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1688 }
1689 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1690 }
1691 vid = 1;
1692 }
1693 /* compute min output value */
1694 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1695 if ((pts < ti1) && (pts > 0))
1696 ti1 = pts;
1697 }
1698 if (ti1 < 0.01)
1699 ti1 = 0.01;
1700
1701 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1702
1703 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1704 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1705 (double)total_size / 1024, ti1, bitrate);
1706
1707 if (nb_frames_dup || nb_frames_drop)
1708 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1709 nb_frames_dup, nb_frames_drop);
1710
1711 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1712
1713 fflush(stderr);
1714
1715 if (is_last_report) {
1716 int64_t raw= audio_size + video_size + extra_size;
1717 av_log(NULL, AV_LOG_INFO, "\n");
1718 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1719 video_size / 1024.0,
1720 audio_size / 1024.0,
1721 extra_size / 1024.0,
1722 100.0 * (total_size - raw) / raw
1723 );
1724 }
1725 }
1726
1727 static void flush_encoders(void)
1728 {
1729 int i, ret;
1730
1731 for (i = 0; i < nb_output_streams; i++) {
1732 OutputStream *ost = output_streams[i];
1733 AVCodecContext *enc = ost->st->codec;
1734 AVFormatContext *os = output_files[ost->file_index]->ctx;
1735 int stop_encoding = 0;
1736
1737 if (!ost->encoding_needed)
1738 continue;
1739
1740 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1741 continue;
1742 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1743 continue;
1744
1745 for (;;) {
1746 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1747 const char *desc;
1748 int64_t *size;
1749
1750 switch (ost->st->codec->codec_type) {
1751 case AVMEDIA_TYPE_AUDIO:
1752 encode = avcodec_encode_audio2;
1753 desc = "Audio";
1754 size = &audio_size;
1755 break;
1756 case AVMEDIA_TYPE_VIDEO:
1757 encode = avcodec_encode_video2;
1758 desc = "Video";
1759 size = &video_size;
1760 break;
1761 default:
1762 stop_encoding = 1;
1763 }
1764
1765 if (encode) {
1766 AVPacket pkt;
1767 int got_packet;
1768 av_init_packet(&pkt);
1769 pkt.data = NULL;
1770 pkt.size = 0;
1771
1772 ret = encode(enc, &pkt, NULL, &got_packet);
1773 if (ret < 0) {
1774 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1775 exit_program(1);
1776 }
1777 *size += ret;
1778 if (ost->logfile && enc->stats_out) {
1779 fprintf(ost->logfile, "%s", enc->stats_out);
1780 }
1781 if (!got_packet) {
1782 stop_encoding = 1;
1783 break;
1784 }
1785 if (pkt.pts != AV_NOPTS_VALUE)
1786 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1787 if (pkt.dts != AV_NOPTS_VALUE)
1788 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1789 write_frame(os, &pkt, ost);
1790 }
1791
1792 if (stop_encoding)
1793 break;
1794 }
1795 }
1796 }
1797
1798 /*
1799 * Check whether a packet from ist should be written into ost at this time
1800 */
1801 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1802 {
1803 OutputFile *of = output_files[ost->file_index];
1804 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1805
1806 if (ost->source_index != ist_index)
1807 return 0;
1808
1809 if (of->start_time && ist->last_dts < of->start_time)
1810 return 0;
1811
1812 return 1;
1813 }
1814
1815 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1816 {
1817 OutputFile *of = output_files[ost->file_index];
1818 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1819 AVPacket opkt;
1820
1821 av_init_packet(&opkt);
1822
1823 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1824 !ost->copy_initial_nonkeyframes)
1825 return;
1826
1827 if (of->recording_time != INT64_MAX &&
1828 ist->last_dts >= of->recording_time + of->start_time) {
1829 ost->is_past_recording_time = 1;
1830 return;
1831 }
1832
1833 /* force the input stream PTS */
1834 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1835 audio_size += pkt->size;
1836 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1837 video_size += pkt->size;
1838 ost->sync_opts++;
1839 }
1840
1841 if (pkt->pts != AV_NOPTS_VALUE)
1842 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1843 else
1844 opkt.pts = AV_NOPTS_VALUE;
1845
1846 if (pkt->dts == AV_NOPTS_VALUE)
1847 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1848 else
1849 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1850 opkt.dts -= ost_tb_start_time;
1851
1852 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1853 opkt.flags = pkt->flags;
1854
1855 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1856 if ( ost->st->codec->codec_id != CODEC_ID_H264
1857 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1858 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1859 && ost->st->codec->codec_id != CODEC_ID_VC1
1860 ) {
1861 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1862 opkt.destruct = av_destruct_packet;
1863 } else {
1864 opkt.data = pkt->data;
1865 opkt.size = pkt->size;
1866 }
1867
1868 write_frame(of->ctx, &opkt, ost);
1869 ost->st->codec->frame_number++;
1870 av_free_packet(&opkt);
1871 }
1872
1873 static void rate_emu_sleep(InputStream *ist)
1874 {
1875 if (input_files[ist->file_index]->rate_emu) {
1876 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
1877 int64_t now = av_gettime() - ist->start;
1878 if (pts > now)
1879 usleep(pts - now);
1880 }
1881 }
1882
1883 static int guess_input_channel_layout(InputStream *ist)
1884 {
1885 AVCodecContext *dec = ist->st->codec;
1886
1887 if (!dec->channel_layout) {
1888 char layout_name[256];
1889
1890 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1891 if (!dec->channel_layout)
1892 return 0;
1893 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1894 dec->channels, dec->channel_layout);
1895 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1896 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1897 }
1898 return 1;
1899 }
1900
1901 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1902 {
1903 AVFrame *decoded_frame;
1904 AVCodecContext *avctx = ist->st->codec;
1905 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1906 int i, ret, resample_changed;
1907
1908 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1909 return AVERROR(ENOMEM);
1910 else
1911 avcodec_get_frame_defaults(ist->decoded_frame);
1912 decoded_frame = ist->decoded_frame;
1913
1914 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1915 if (ret < 0) {
1916 return ret;
1917 }
1918
1919 if (!*got_output) {
1920 /* no audio frame */
1921 if (!pkt->size)
1922 for (i = 0; i < ist->nb_filters; i++)
1923 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1924 return ret;
1925 }
1926
1927 /* if the decoder provides a pts, use it instead of the last packet pts.
1928 the decoder could be delaying output by a packet or more. */
1929 if (decoded_frame->pts != AV_NOPTS_VALUE)
1930 ist->next_dts = decoded_frame->pts;
1931 else if (pkt->pts != AV_NOPTS_VALUE) {
1932 decoded_frame->pts = pkt->pts;
1933 pkt->pts = AV_NOPTS_VALUE;
1934 }
1935
1936 // preprocess audio (volume)
1937 if (audio_volume != 256) {
1938 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1939 void *samples = decoded_frame->data[0];
1940 switch (avctx->sample_fmt) {
1941 case AV_SAMPLE_FMT_U8:
1942 {
1943 uint8_t *volp = samples;
1944 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1945 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1946 *volp++ = av_clip_uint8(v);
1947 }
1948 break;
1949 }
1950 case AV_SAMPLE_FMT_S16:
1951 {
1952 int16_t *volp = samples;
1953 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1954 int v = ((*volp) * audio_volume + 128) >> 8;
1955 *volp++ = av_clip_int16(v);
1956 }
1957 break;
1958 }
1959 case AV_SAMPLE_FMT_S32:
1960 {
1961 int32_t *volp = samples;
1962 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1963 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1964 *volp++ = av_clipl_int32(v);
1965 }
1966 break;
1967 }
1968 case AV_SAMPLE_FMT_FLT:
1969 {
1970 float *volp = samples;
1971 float scale = audio_volume / 256.f;
1972 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1973 *volp++ *= scale;
1974 }
1975 break;
1976 }
1977 case AV_SAMPLE_FMT_DBL:
1978 {
1979 double *volp = samples;
1980 double scale = audio_volume / 256.;
1981 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1982 *volp++ *= scale;
1983 }
1984 break;
1985 }
1986 default:
1987 av_log(NULL, AV_LOG_FATAL,
1988 "Audio volume adjustment on sample format %s is not supported.\n",
1989 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1990 exit_program(1);
1991 }
1992 }
1993
1994 rate_emu_sleep(ist);
1995
1996 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1997 ist->resample_channels != avctx->channels ||
1998 ist->resample_channel_layout != decoded_frame->channel_layout ||
1999 ist->resample_sample_rate != decoded_frame->sample_rate;
2000 if (resample_changed) {
2001 char layout1[64], layout2[64];
2002
2003 if (!guess_input_channel_layout(ist)) {
2004 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2005 "layout for Input Stream #%d.%d\n", ist->file_index,
2006 ist->st->index);
2007 exit_program(1);
2008 }
2009 decoded_frame->channel_layout = avctx->channel_layout;
2010
2011 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2012 ist->resample_channel_layout);
2013 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2014 decoded_frame->channel_layout);
2015
2016 av_log(NULL, AV_LOG_INFO,
2017 "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
2018 ist->file_index, ist->st->index,
2019 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
2020 ist->resample_channels, layout1,
2021 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2022 avctx->channels, layout2);
2023
2024 ist->resample_sample_fmt = decoded_frame->format;
2025 ist->resample_sample_rate = decoded_frame->sample_rate;
2026 ist->resample_channel_layout = decoded_frame->channel_layout;
2027 ist->resample_channels = avctx->channels;
2028
2029 for (i = 0; i < nb_filtergraphs; i++)
2030 if (ist_in_filtergraph(filtergraphs[i], ist) &&
2031 configure_filtergraph(filtergraphs[i]) < 0) {
2032 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2033 exit_program(1);
2034 }
2035 }
2036
2037 for (i = 0; i < ist->nb_filters; i++)
2038 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
2039
2040 return ret;
2041 }
2042
2043 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2044 {
2045 AVFrame *decoded_frame;
2046 void *buffer_to_free = NULL;
2047 int i, ret = 0, resample_changed;
2048 float quality;
2049
2050 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2051 return AVERROR(ENOMEM);
2052 else
2053 avcodec_get_frame_defaults(ist->decoded_frame);
2054 decoded_frame = ist->decoded_frame;
2055
2056 ret = avcodec_decode_video2(ist->st->codec,
2057 decoded_frame, got_output, pkt);
2058 if (ret < 0)
2059 return ret;
2060
2061 quality = same_quant ? decoded_frame->quality : 0;
2062 if (!*got_output) {
2063 /* no picture yet */
2064 if (!pkt->size)
2065 for (i = 0; i < ist->nb_filters; i++)
2066 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2067 return ret;
2068 }
2069 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
2070 decoded_frame->pkt_dts);
2071 pkt->size = 0;
2072 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2073
2074 rate_emu_sleep(ist);
2075
2076 if (ist->st->sample_aspect_ratio.num)
2077 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2078
2079 resample_changed = ist->resample_width != decoded_frame->width ||
2080 ist->resample_height != decoded_frame->height ||
2081 ist->resample_pix_fmt != decoded_frame->format;
2082 if (resample_changed) {
2083 av_log(NULL, AV_LOG_INFO,
2084 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2085 ist->file_index, ist->st->index,
2086 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
2087 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2088
2089 ist->resample_width = decoded_frame->width;
2090 ist->resample_height = decoded_frame->height;
2091 ist->resample_pix_fmt = decoded_frame->format;
2092
2093 for (i = 0; i < nb_filtergraphs; i++)
2094 if (ist_in_filtergraph(filtergraphs[i], ist) &&
2095 configure_filtergraph(filtergraphs[i]) < 0) {
2096 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2097 exit_program(1);
2098 }
2099 }
2100
2101 for (i = 0; i < ist->nb_filters; i++) {
2102 // XXX what an ugly hack
2103 if (ist->filters[i]->graph->nb_outputs == 1)
2104 ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2105
2106 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
2107 FrameBuffer *buf = decoded_frame->opaque;
2108 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2109 decoded_frame->data, decoded_frame->linesize,
2110 AV_PERM_READ | AV_PERM_PRESERVE,
2111 ist->st->codec->width, ist->st->codec->height,
2112 ist->st->codec->pix_fmt);
2113
2114 avfilter_copy_frame_props(fb, decoded_frame);
2115 fb->buf->priv = buf;
2116 fb->buf->free = filter_release_buffer;
2117
2118 buf->refcount++;
2119 av_buffersrc_buffer(ist->filters[i]->filter, fb);
2120 } else
2121 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
2122 }
2123
2124 av_free(buffer_to_free);
2125 return ret;
2126 }
2127
2128 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2129 {
2130 AVSubtitle subtitle;
2131 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2132 &subtitle, got_output, pkt);
2133 if (ret < 0)
2134 return ret;
2135 if (!*got_output)
2136 return ret;
2137
2138 rate_emu_sleep(ist);
2139
2140 for (i = 0; i < nb_output_streams; i++) {
2141 OutputStream *ost = output_streams[i];
2142
2143 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2144 continue;
2145
2146 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2147 }
2148
2149 avsubtitle_free(&subtitle);
2150 return ret;
2151 }
2152
2153 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2154 static int output_packet(InputStream *ist, const AVPacket *pkt)
2155 {
2156 int i;
2157 int got_output;
2158 AVPacket avpkt;
2159
2160 if (ist->next_dts == AV_NOPTS_VALUE)
2161 ist->next_dts = ist->last_dts;
2162
2163 if (pkt == NULL) {
2164 /* EOF handling */
2165 av_init_packet(&avpkt);
2166 avpkt.data = NULL;
2167 avpkt.size = 0;
2168 goto handle_eof;
2169 } else {
2170 avpkt = *pkt;
2171 }
2172
2173 if (pkt->dts != AV_NOPTS_VALUE)
2174 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2175
2176 // while we have more to decode or while the decoder did output something on EOF
2177 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2178 int ret = 0;
2179 handle_eof:
2180
2181 ist->last_dts = ist->next_dts;
2182
2183 if (avpkt.size && avpkt.size != pkt->size) {
2184 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2185 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2186 ist->showed_multi_packet_warning = 1;
2187 }
2188
2189 switch (ist->st->codec->codec_type) {
2190 case AVMEDIA_TYPE_AUDIO:
2191 ret = decode_audio (ist, &avpkt, &got_output);
2192 break;
2193 case AVMEDIA_TYPE_VIDEO:
2194 ret = decode_video (ist, &avpkt, &got_output);
2195 if (avpkt.duration)
2196 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2197 else if (ist->st->r_frame_rate.num)
2198 ist->next_dts += av_rescale_q(1, (AVRational){ist->st->r_frame_rate.den,
2199 ist->st->r_frame_rate.num},
2200 AV_TIME_BASE_Q);
2201 else if (ist->st->codec->time_base.num != 0) {
2202 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
2203 ist->st->codec->ticks_per_frame;
2204 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
2205 }
2206 break;
2207 case AVMEDIA_TYPE_SUBTITLE:
2208 ret = transcode_subtitles(ist, &avpkt, &got_output);
2209 break;
2210 default:
2211 return -1;
2212 }
2213
2214 if (ret < 0)
2215 return ret;
2216 // touch data and size only if not EOF
2217 if (pkt) {
2218 avpkt.data += ret;
2219 avpkt.size -= ret;
2220 }
2221 if (!got_output) {
2222 continue;
2223 }
2224 }
2225
2226 /* handle stream copy */
2227 if (!ist->decoding_needed) {
2228 rate_emu_sleep(ist);
2229 ist->last_dts = ist->next_dts;
2230 switch (ist->st->codec->codec_type) {
2231 case AVMEDIA_TYPE_AUDIO:
2232 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2233 ist->st->codec->sample_rate;
2234 break;
2235 case AVMEDIA_TYPE_VIDEO:
2236 if (ist->st->codec->time_base.num != 0) {
2237 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2238 ist->next_dts += ((int64_t)AV_TIME_BASE *
2239 ist->st->codec->time_base.num * ticks) /
2240 ist->st->codec->time_base.den;
2241 }
2242 break;
2243 }
2244 }
2245 for (i = 0; pkt && i < nb_output_streams; i++) {
2246 OutputStream *ost = output_streams[i];
2247
2248 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2249 continue;
2250
2251 do_streamcopy(ist, ost, pkt);
2252 }
2253
2254 return 0;
2255 }
2256
2257 static void print_sdp(void)
2258 {
2259 char sdp[2048];
2260 int i;
2261 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2262
2263 if (!avc)
2264 exit_program(1);
2265 for (i = 0; i < nb_output_files; i++)
2266 avc[i] = output_files[i]->ctx;
2267
2268 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2269 printf("SDP:\n%s\n", sdp);
2270 fflush(stdout);
2271 av_freep(&avc);
2272 }
2273
2274 static int init_input_stream(int ist_index, char *error, int error_len)
2275 {
2276 int i;
2277 InputStream *ist = input_streams[ist_index];
2278 if (ist->decoding_needed) {
2279 AVCodec *codec = ist->dec;
2280 if (!codec) {
2281 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2282 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2283 return AVERROR(EINVAL);
2284 }
2285
2286 /* update requested sample format for the decoder based on the
2287 corresponding encoder sample format */
2288 for (i = 0; i < nb_output_streams; i++) {
2289 OutputStream *ost = output_streams[i];
2290 if (ost->source_index == ist_index) {
2291 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2292 break;
2293 }
2294 }
2295
2296 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2297 ist->st->codec->get_buffer = codec_get_buffer;
2298 ist->st->codec->release_buffer = codec_release_buffer;
2299 ist->st->codec->opaque = &ist->buffer_pool;
2300 }
2301
2302 if (!av_dict_get(ist->opts, "threads", NULL, 0))
2303 av_dict_set(&ist->opts, "threads", "auto", 0);
2304 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2305 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2306 ist->file_index, ist->st->index);
2307 return AVERROR(EINVAL);
2308 }
2309 assert_codec_experimental(ist->st->codec, 0);
2310 assert_avoptions(ist->opts);
2311 }
2312
2313 ist->last_dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2314 ist->next_dts = AV_NOPTS_VALUE;
2315 init_pts_correction(&ist->pts_ctx);
2316 ist->is_start = 1;
2317
2318 return 0;
2319 }
2320
2321 static InputStream *get_input_stream(OutputStream *ost)
2322 {
2323 if (ost->source_index >= 0)
2324 return input_streams[ost->source_index];
2325
2326 if (ost->filter) {
2327 FilterGraph *fg = ost->filter->graph;
2328 int i;
2329
2330 for (i = 0; i < fg->nb_inputs; i++)
2331 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2332 return fg->inputs[i]->ist;
2333 }
2334
2335 return NULL;
2336 }
2337
2338 static int transcode_init(void)
2339 {
2340 int ret = 0, i, j, k;
2341 AVFormatContext *oc;
2342 AVCodecContext *codec, *icodec;
2343 OutputStream *ost;
2344 InputStream *ist;
2345 char error[1024];
2346 int want_sdp = 1;
2347
2348 /* init framerate emulation */
2349 for (i = 0; i < nb_input_files; i++) {
2350 InputFile *ifile = input_files[i];
2351 if (ifile->rate_emu)
2352 for (j = 0; j < ifile->nb_streams; j++)
2353 input_streams[j + ifile->ist_index]->start = av_gettime();
2354 }
2355
2356 /* output stream init */
2357 for (i = 0; i < nb_output_files; i++) {
2358 oc = output_files[i]->ctx;
2359 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2360 av_dump_format(oc, i, oc->filename, 1);
2361 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2362 return AVERROR(EINVAL);
2363 }
2364 }
2365
2366 /* init complex filtergraphs */
2367 for (i = 0; i < nb_filtergraphs; i++)
2368 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2369 return ret;
2370
2371 /* for each output stream, we compute the right encoding parameters */
2372 for (i = 0; i < nb_output_streams; i++) {
2373 ost = output_streams[i];
2374 oc = output_files[ost->file_index]->ctx;
2375 ist = get_input_stream(ost);
2376
2377 if (ost->attachment_filename)
2378 continue;
2379
2380 codec = ost->st->codec;
2381
2382 if (ist) {
2383 icodec = ist->st->codec;
2384
2385 ost->st->disposition = ist->st->disposition;
2386 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2387 codec->chroma_sample_location = icodec->chroma_sample_location;
2388 }
2389
2390 if (ost->stream_copy) {
2391 uint64_t extra_size;
2392
2393 av_assert0(ist && !ost->filter);
2394
2395 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2396
2397 if (extra_size > INT_MAX) {
2398 return AVERROR(EINVAL);
2399 }
2400
2401 /* if stream_copy is selected, no need to decode or encode */
2402 codec->codec_id = icodec->codec_id;
2403 codec->codec_type = icodec->codec_type;
2404
2405 if (!codec->codec_tag) {
2406 if (!oc->oformat->codec_tag ||
2407 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2408 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2409 codec->codec_tag = icodec->codec_tag;
2410 }
2411
2412 codec->bit_rate = icodec->bit_rate;
2413 codec->rc_max_rate = icodec->rc_max_rate;
2414 codec->rc_buffer_size = icodec->rc_buffer_size;
2415 codec->field_order = icodec->field_order;
2416 codec->extradata = av_mallocz(extra_size);
2417 if (!codec->extradata) {
2418 return AVERROR(ENOMEM);
2419 }
2420 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2421 codec->extradata_size = icodec->extradata_size;
2422 if (!copy_tb) {
2423 codec->time_base = icodec->time_base;
2424 codec->time_base.num *= icodec->ticks_per_frame;
2425 av_reduce(&codec->time_base.num, &codec->time_base.den,
2426 codec->time_base.num, codec->time_base.den, INT_MAX);
2427 } else
2428 codec->time_base = ist->st->time_base;
2429
2430 switch (codec->codec_type) {
2431 case AVMEDIA_TYPE_AUDIO:
2432 if (audio_volume != 256) {
2433 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2434 exit_program(1);
2435 }
2436 codec->channel_layout = icodec->channel_layout;
2437 codec->sample_rate = icodec->sample_rate;
2438 codec->channels = icodec->channels;
2439 codec->frame_size = icodec->frame_size;
2440 codec->audio_service_type = icodec->audio_service_type;
2441 codec->block_align = icodec->block_align;
2442 break;
2443 case AVMEDIA_TYPE_VIDEO:
2444 codec->pix_fmt = icodec->pix_fmt;
2445 codec->width = icodec->width;
2446 codec->height = icodec->height;
2447 codec->has_b_frames = icodec->has_b_frames;
2448 if (!codec->sample_aspect_ratio.num) {
2449 codec->sample_aspect_ratio =
2450 ost->st->sample_aspect_ratio =
2451 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2452 ist->st->codec->sample_aspect_ratio.num ?
2453 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2454 }
2455 break;
2456 case AVMEDIA_TYPE_SUBTITLE:
2457 codec->width = icodec->width;
2458 codec->height = icodec->height;
2459 break;
2460 case AVMEDIA_TYPE_DATA:
2461 case AVMEDIA_TYPE_ATTACHMENT:
2462 break;
2463 default:
2464 abort();
2465 }
2466 } else {
2467 if (!ost->enc) {
2468 /* should only happen when a default codec is not present. */
2469 snprintf(error, sizeof(error), "Automatic encoder selection "
2470 "failed for output stream #%d:%d. Default encoder for "
2471 "format %s is probably disabled. Please choose an "
2472 "encoder manually.\n", ost->file_index, ost->index,
2473 oc->oformat->name);
2474 ret = AVERROR(EINVAL);
2475 goto dump_format;
2476 }
2477
2478 if (ist)
2479 ist->decoding_needed = 1;
2480 ost->encoding_needed = 1;
2481
2482 /*
2483 * We want CFR output if and only if one of those is true:
2484 * 1) user specified output framerate with -r
2485 * 2) user specified -vsync cfr
2486 * 3) output format is CFR and the user didn't force vsync to
2487 * something else than CFR
2488 *
2489 * in such a case, set ost->frame_rate
2490 */
2491 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
2492 !ost->frame_rate.num && ist &&
2493 (video_sync_method == VSYNC_CFR ||
2494 (video_sync_method == VSYNC_AUTO &&
2495 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
2496 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2497 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2498 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2499 ost->frame_rate = ost->enc->supported_framerates[idx];
2500 }
2501 }
2502
2503 if (!ost->filter &&
2504 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2505 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2506 FilterGraph *fg;
2507 fg = init_simple_filtergraph(ist, ost);
2508 if (configure_filtergraph(fg)) {
2509 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2510 exit(1);
2511 }
2512 }
2513
2514 switch (codec->codec_type) {
2515 case AVMEDIA_TYPE_AUDIO:
2516 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
2517 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
2518 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2519 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
2520 codec->time_base = (AVRational){ 1, codec->sample_rate };
2521 break;
2522 case AVMEDIA_TYPE_VIDEO:
2523 codec->time_base = ost->filter->filter->inputs[0]->time_base;
2524
2525 codec->width = ost->filter->filter->inputs[0]->w;
2526 codec->height = ost->filter->filter->inputs[0]->h;
2527 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2528 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2529 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2530 ost->filter->filter->inputs[0]->sample_aspect_ratio;
2531 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2532
2533 if (codec->width != icodec->width ||
2534 codec->height != icodec->height ||
2535 codec->pix_fmt != icodec->pix_fmt) {
2536 codec->bits_per_raw_sample = 0;
2537 }
2538
2539 break;
2540 case AVMEDIA_TYPE_SUBTITLE:
2541 codec->time_base = (AVRational){1, 1000};
2542 break;
2543 default:
2544 abort();
2545 break;
2546 }
2547 /* two pass mode */
2548 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2549 char logfilename[1024];
2550 FILE *f;
2551
2552 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2553 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2554 i);
2555 if (!strcmp(ost->enc->name, "libx264")) {
2556 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2557 } else {
2558 if (codec->flags & CODEC_FLAG_PASS1) {
2559 f = fopen(logfilename, "wb");
2560 if (!f) {
2561 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2562 logfilename, strerror(errno));
2563 exit_program(1);
2564 }
2565 ost->logfile = f;
2566 } else {
2567 char *logbuffer;
2568 size_t logbuffer_size;
2569 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2570 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2571 logfilename);
2572 exit_program(1);
2573 }
2574 codec->stats_in = logbuffer;
2575 }
2576 }
2577 }
2578 }
2579 }
2580
2581 /* open each encoder */
2582 for (i = 0; i < nb_output_streams; i++) {
2583 ost = output_streams[i];
2584 if (ost->encoding_needed) {
2585 AVCodec *codec = ost->enc;
2586 AVCodecContext *dec = NULL;
2587
2588 if ((ist = get_input_stream(ost)))
2589 dec = ist->st->codec;
2590 if (dec && dec->subtitle_header) {
2591 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2592 if (!ost->st->codec->subtitle_header) {
2593 ret = AVERROR(ENOMEM);
2594 goto dump_format;
2595 }
2596 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2597 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2598 }
2599 if (!av_dict_get(ost->opts, "threads", NULL, 0))
2600 av_dict_set(&ost->opts, "threads", "auto", 0);
2601 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2602 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2603 ost->file_index, ost->index);
2604 ret = AVERROR(EINVAL);
2605 goto dump_format;
2606 }
2607 assert_codec_experimental(ost->st->codec, 1);
2608 assert_avoptions(ost->opts);
2609 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2610 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2611 "It takes bits/s as argument, not kbits/s\n");
2612 extra_size += ost->st->codec->extradata_size;
2613
2614 if (ost->st->codec->me_threshold)
2615 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2616 }
2617 }
2618
2619 /* init input streams */
2620 for (i = 0; i < nb_input_streams; i++)
2621 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2622 goto dump_format;
2623
2624 /* discard unused programs */
2625 for (i = 0; i < nb_input_files; i++) {
2626 InputFile *ifile = input_files[i];
2627 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2628 AVProgram *p = ifile->ctx->programs[j];
2629 int discard = AVDISCARD_ALL;
2630
2631 for (k = 0; k < p->nb_stream_indexes; k++)
2632 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2633 discard = AVDISCARD_DEFAULT;
2634 break;
2635 }
2636 p->discard = discard;
2637 }
2638 }
2639
2640 /* open files and write file headers */
2641 for (i = 0; i < nb_output_files; i++) {
2642 oc = output_files[i]->ctx;
2643 oc->interrupt_callback = int_cb;
2644 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2645 char errbuf[128];
2646 const char *errbuf_ptr = errbuf;
2647 if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2648 errbuf_ptr = strerror(AVUNERROR(ret));
2649 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2650 ret = AVERROR(EINVAL);
2651 goto dump_format;
2652 }
2653 assert_avoptions(output_files[i]->opts);
2654 if (strcmp(oc->oformat->name, "rtp")) {
2655 want_sdp = 0;
2656 }
2657 }
2658
2659 dump_format:
2660 /* dump the file output parameters - cannot be done before in case
2661 of stream copy */
2662 for (i = 0; i < nb_output_files; i++) {
2663 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2664 }
2665
2666 /* dump the stream mapping */
2667 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2668 for (i = 0; i < nb_input_streams; i++) {
2669 ist = input_streams[i];
2670
2671 for (j = 0; j < ist->nb_filters; j++) {
2672 if (ist->filters[j]->graph->graph_desc) {
2673 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2674 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2675 ist->filters[j]->name);
2676 if (nb_filtergraphs > 1)
2677 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2678 av_log(NULL, AV_LOG_INFO, "\n");
2679 }
2680 }
2681 }
2682
2683 for (i = 0; i < nb_output_streams; i++) {
2684 ost = output_streams[i];
2685
2686 if (ost->attachment_filename) {
2687 /* an attached file */
2688 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2689 ost->attachment_filename, ost->file_index, ost->index);
2690 continue;
2691 }
2692
2693 if (ost->filter && ost->filter->graph->graph_desc) {
2694 /* output from a complex graph */
2695 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2696 if (nb_filtergraphs > 1)
2697 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2698
2699 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2700 ost->index, ost->enc ? ost->enc->name : "?");
2701 continue;
2702 }
2703
2704 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2705 input_streams[ost->source_index]->file_index,
2706 input_streams[ost->source_index]->st->index,
2707 ost->file_index,
2708 ost->index);
2709 if (ost->sync_ist != input_streams[ost->source_index])
2710 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2711 ost->sync_ist->file_index,
2712 ost->sync_ist->st->index);
2713 if (ost->stream_copy)
2714 av_log(NULL, AV_LOG_INFO, " (copy)");
2715 else
2716 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2717 input_streams[ost->source_index]->dec->name : "?",
2718 ost->enc ? ost->enc->name : "?");
2719 av_log(NULL, AV_LOG_INFO, "\n");
2720 }
2721
2722 if (ret) {
2723 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2724 return ret;
2725 }
2726
2727 if (want_sdp) {
2728 print_sdp();
2729 }
2730
2731 return 0;
2732 }
2733
2734 /**
2735 * @return 1 if there are still streams where more output is wanted,
2736 * 0 otherwise
2737 */
2738 static int need_output(void)
2739 {
2740 int i;
2741
2742 for (i = 0; i < nb_output_streams; i++) {
2743 OutputStream *ost = output_streams[i];
2744 OutputFile *of = output_files[ost->file_index];
2745 AVFormatContext *os = output_files[ost->file_index]->ctx;
2746
2747 if (ost->is_past_recording_time ||
2748 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2749 continue;
2750 if (ost->frame_number >= ost->max_frames) {
2751 int j;
2752 for (j = 0; j < of->ctx->nb_streams; j++)
2753 output_streams[of->ost_index + j]->is_past_recording_time = 1;
2754 continue;
2755 }
2756
2757 return 1;
2758 }
2759
2760 return 0;
2761 }
2762
2763 static int select_input_file(uint8_t *no_packet)
2764 {
2765 int64_t ipts_min = INT64_MAX;
2766 int i, file_index = -1;
2767
2768 for (i = 0; i < nb_input_streams; i++) {
2769 InputStream *ist = input_streams[i];
2770 int64_t ipts = ist->last_dts;
2771
2772 if (ist->discard || no_packet[ist->file_index])
2773 continue;
2774 if (!input_files[ist->file_index]->eof_reached) {
2775 if (ipts < ipts_min) {
2776 ipts_min = ipts;
2777 file_index = ist->file_index;
2778 }
2779 }
2780 }
2781
2782 return file_index;
2783 }
2784
2785 #if HAVE_PTHREADS
2786 static void *input_thread(void *arg)
2787 {
2788 InputFile *f = arg;
2789 int ret = 0;
2790
2791 while (!transcoding_finished && ret >= 0) {
2792 AVPacket pkt;
2793 ret = av_read_frame(f->ctx, &pkt);
2794
2795 if (ret == AVERROR(EAGAIN)) {
2796 usleep(10000);
2797 ret = 0;
2798 continue;
2799 } else if (ret < 0)
2800 break;
2801
2802 pthread_mutex_lock(&f->fifo_lock);
2803 while (!av_fifo_space(f->fifo))
2804 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2805
2806 av_dup_packet(&pkt);
2807 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2808
2809 pthread_mutex_unlock(&f->fifo_lock);
2810 }
2811
2812 f->finished = 1;
2813 return NULL;
2814 }
2815
2816 static void free_input_threads(void)
2817 {
2818 int i;
2819
2820 if (nb_input_files == 1)
2821 return;
2822
2823 transcoding_finished = 1;
2824
2825 for (i = 0; i < nb_input_files; i++) {
2826 InputFile *f = input_files[i];
2827 AVPacket pkt;
2828
2829 if (!f->fifo || f->joined)
2830 continue;
2831
2832 pthread_mutex_lock(&f->fifo_lock);
2833 while (av_fifo_size(f->fifo)) {
2834 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2835 av_free_packet(&pkt);
2836 }
2837 pthread_cond_signal(&f->fifo_cond);
2838 pthread_mutex_unlock(&f->fifo_lock);
2839
2840 pthread_join(f->thread, NULL);
2841 f->joined = 1;
2842
2843 while (av_fifo_size(f->fifo)) {
2844 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2845 av_free_packet(&pkt);
2846 }
2847 av_fifo_free(f->fifo);
2848 }
2849 }
2850
2851 static int init_input_threads(void)
2852 {
2853 int i, ret;
2854
2855 if (nb_input_files == 1)
2856 return 0;
2857
2858 for (i = 0; i < nb_input_files; i++) {
2859 InputFile *f = input_files[i];
2860
2861 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2862 return AVERROR(ENOMEM);
2863
2864 pthread_mutex_init(&f->fifo_lock, NULL);
2865 pthread_cond_init (&f->fifo_cond, NULL);
2866
2867 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2868 return AVERROR(ret);
2869 }
2870 return 0;
2871 }
2872
2873 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2874 {
2875 int ret = 0;
2876
2877 pthread_mutex_lock(&f->fifo_lock);
2878
2879 if (av_fifo_size(f->fifo)) {
2880 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2881 pthread_cond_signal(&f->fifo_cond);
2882 } else {
2883 if (f->finished)
2884 ret = AVERROR_EOF;
2885 else
2886 ret = AVERROR(EAGAIN);
2887 }
2888
2889 pthread_mutex_unlock(&f->fifo_lock);
2890
2891 return ret;
2892 }
2893 #endif
2894
2895 static int get_input_packet(InputFile *f, AVPacket *pkt)
2896 {
2897 #if HAVE_PTHREADS
2898 if (nb_input_files > 1)
2899 return get_input_packet_mt(f, pkt);
2900 #endif
2901 return av_read_frame(f->ctx, pkt);
2902 }
2903
2904 /*
2905 * The following code is the main loop of the file converter
2906 */
2907 static int transcode(void)
2908 {
2909 int ret, i;
2910 AVFormatContext *is, *os;
2911 OutputStream *ost;
2912 InputStream *ist;
2913 uint8_t *no_packet;
2914 int no_packet_count = 0;
2915 int64_t timer_start;
2916
2917 if (!(no_packet = av_mallocz(nb_input_files)))
2918 exit_program(1);
2919
2920 ret = transcode_init();
2921 if (ret < 0)
2922 goto fail;
2923
2924 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2925 term_init();
2926
2927 timer_start = av_gettime();
2928
2929 #if HAVE_PTHREADS
2930 if ((ret = init_input_threads()) < 0)
2931 goto fail;
2932 #endif
2933
2934 for (; received_sigterm == 0;) {
2935 int file_index, ist_index;
2936 AVPacket pkt;
2937
2938 /* check if there's any stream where output is still needed */
2939 if (!need_output()) {
2940 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2941 break;
2942 }
2943
2944 /* select the stream that we must read now */
2945 file_index = select_input_file(no_packet);
2946 /* if none, if is finished */
2947 if (file_index < 0) {
2948 if (no_packet_count) {
2949 no_packet_count = 0;
2950 memset(no_packet, 0, nb_input_files);
2951 usleep(10000);
2952 continue;
2953 }
2954 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2955 break;
2956 }
2957
2958 is = input_files[file_index]->ctx;
2959 ret = get_input_packet(input_files[file_index], &pkt);
2960
2961 if (ret == AVERROR(EAGAIN)) {
2962 no_packet[file_index] = 1;
2963 no_packet_count++;
2964 continue;
2965 }
2966 if (ret < 0) {
2967 input_files[file_index]->eof_reached = 1;
2968
2969 for (i = 0; i < input_files[file_index]->nb_streams; i++) {
2970 ist = input_streams[input_files[file_index]->ist_index + i];
2971 if (ist->decoding_needed)
2972 output_packet(ist, NULL);
2973 }
2974
2975 if (opt_shortest)
2976 break;
2977 else
2978 continue;
2979 }
2980
2981 no_packet_count = 0;
2982 memset(no_packet, 0, nb_input_files);
2983
2984 if (do_pkt_dump) {
2985 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2986 is->streams[pkt.stream_index]);
2987 }
2988 /* the following test is needed in case new streams appear
2989 dynamically in stream : we ignore them */
2990 if (pkt.stream_index >= input_files[file_index]->nb_streams)
2991 goto discard_packet;
2992 ist_index = input_files[file_index]->ist_index + pkt.stream_index;
2993 ist = input_streams[ist_index];
2994 if (ist->discard)
2995 goto discard_packet;
2996
2997 if (pkt.dts != AV_NOPTS_VALUE)
2998 pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2999 if (pkt.pts != AV_NOPTS_VALUE)
3000 pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3001
3002 if (pkt.pts != AV_NOPTS_VALUE)
3003 pkt.pts *= ist->ts_scale;
3004 if (pkt.dts != AV_NOPTS_VALUE)
3005 pkt.dts *= ist->ts_scale;
3006
3007 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
3008 // ist->next_dts,
3009 // pkt.dts, input_files[ist->file_index].ts_offset,
3010 // ist->st->codec->codec_type);
3011 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE
3012 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3013 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3014 int64_t delta = pkt_dts - ist->next_dts;
3015 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
3016 input_files[ist->file_index]->ts_offset -= delta;
3017 av_log(NULL, AV_LOG_DEBUG,
3018 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3019 delta, input_files[ist->file_index]->ts_offset);
3020 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3021 if (pkt.pts != AV_NOPTS_VALUE)
3022 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3023 }
3024 }
3025
3026 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3027 if (output_packet(ist, &pkt) < 0 || poll_filters() < 0) {
3028 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3029 ist->file_index, ist->st->index);
3030 if (exit_on_error)
3031 exit_program(1);
3032 av_free_packet(&pkt);
3033 continue;
3034 }
3035
3036 discard_packet:
3037 av_free_packet(&pkt);
3038
3039 /* dump report by using the output first video and audio streams */
3040 print_report(0, timer_start);
3041 }
3042 #if HAVE_PTHREADS
3043 free_input_threads();
3044 #endif
3045
3046 /* at the end of stream, we must flush the decoder buffers */
3047 for (i = 0; i < nb_input_streams; i++) {
3048 ist = input_streams[i];
3049 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3050 output_packet(ist, NULL);
3051 }
3052 }
3053 poll_filters();
3054 flush_encoders();
3055
3056 term_exit();
3057
3058 /* write the trailer if needed and close file */
3059 for (i = 0; i < nb_output_files; i++) {
3060 os = output_files[i]->ctx;
3061 av_write_trailer(os);
3062 }
3063
3064 /* dump report by using the first video and audio streams */
3065 print_report(1, timer_start);
3066
3067 /* close each encoder */
3068 for (i = 0; i < nb_output_streams; i++) {
3069 ost = output_streams[i];
3070 if (ost->encoding_needed) {
3071 av_freep(&ost->st->codec->stats_in);
3072 avcodec_close(ost->st->codec);
3073 }
3074 }
3075
3076 /* close each decoder */
3077 for (i = 0; i < nb_input_streams; i++) {
3078 ist = input_streams[i];
3079 if (ist->decoding_needed) {
3080 avcodec_close(ist->st->codec);
3081 }
3082 }
3083
3084 /* finished ! */
3085 ret = 0;
3086
3087 fail:
3088 av_freep(&no_packet);
3089 #if HAVE_PTHREADS
3090 free_input_threads();
3091 #endif
3092
3093 if (output_streams) {
3094 for (i = 0; i < nb_output_streams; i++) {
3095 ost = output_streams[i];
3096 if (ost) {
3097 if (ost->stream_copy)
3098 av_freep(&ost->st->codec->extradata);
3099 if (ost->logfile) {
3100 fclose(ost->logfile);
3101 ost->logfile = NULL;
3102 }
3103 av_freep(&ost->st->codec->subtitle_header);
3104 av_free(ost->forced_kf_pts);
3105 av_dict_free(&ost->opts);
3106 }
3107 }
3108 }
3109 return ret;
3110 }
3111
3112 static double parse_frame_aspect_ratio(const char *arg)
3113 {
3114 int x = 0, y = 0;
3115 double ar = 0;
3116 const char *p;
3117 char *end;
3118
3119 p = strchr(arg, ':');
3120 if (p) {
3121 x = strtol(arg, &end, 10);
3122 if (end == p)
3123 y = strtol(end + 1, &end, 10);
3124 if (x > 0 && y > 0)
3125 ar = (double)x / (double)y;
3126 } else
3127 ar = strtod(arg, NULL);
3128
3129 if (!ar) {
3130 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
3131 exit_program(1);
3132 }
3133 return ar;
3134 }
3135
3136 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3137 {
3138 return parse_option(o, "codec:a", arg, options);
3139 }
3140
3141 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3142 {
3143 return parse_option(o, "codec:v", arg, options);
3144 }
3145
3146 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3147 {
3148 return parse_option(o, "codec:s", arg, options);
3149 }
3150
3151 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3152 {
3153 return parse_option(o, "codec:d", arg, options);
3154 }
3155
3156 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3157 {
3158 StreamMap *m = NULL;
3159 int i, negative = 0, file_idx;
3160 int sync_file_idx = -1, sync_stream_idx;
3161 char *p, *sync;
3162 char *map;
3163
3164 if (*arg == '-') {
3165 negative = 1;
3166 arg++;
3167 }
3168 map = av_strdup(arg);
3169
3170 /* parse sync stream first, just pick first matching stream */
3171 if (sync = strchr(map, ',')) {
3172 *sync = 0;
3173 sync_file_idx = strtol(sync + 1, &sync, 0);
3174 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3175 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3176 exit_program(1);
3177 }
3178 if (*sync)
3179 sync++;
3180 for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3181 if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3182 input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3183 sync_stream_idx = i;
3184 break;
3185 }
3186 if (i == input_files[sync_file_idx]->nb_streams) {
3187 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3188 "match any streams.\n", arg);
3189 exit_program(1);
3190 }
3191 }
3192
3193
3194 if (map[0] == '[') {
3195 /* this mapping refers to lavfi output */
3196 const char *c = map + 1;
3197 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3198 &o->nb_stream_maps, o->nb_stream_maps + 1);
3199 m = &o->stream_maps[o->nb_stream_maps - 1];
3200 m->linklabel = av_get_token(&c, "]");
3201 if (!m->linklabel) {
3202 av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3203 exit_program(1);
3204 }
3205 } else {
3206 file_idx = strtol(map, &p, 0);
3207 if (file_idx >= nb_input_files || file_idx < 0) {
3208 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3209 exit_program(1);
3210 }
3211 if (negative)
3212 /* disable some already defined maps */
3213 for (i = 0; i < o->nb_stream_maps; i++) {
3214 m = &o->stream_maps[i];
3215 if (file_idx == m->file_index &&
3216 check_stream_specifier(input_files[m->file_index]->ctx,
3217 input_files[m->file_index]->ctx->streams[m->stream_index],
3218 *p == ':' ? p + 1 : p) > 0)
3219 m->disabled = 1;
3220 }
3221 else
3222 for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3223 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3224 *p == ':' ? p + 1 : p) <= 0)
3225 continue;
3226 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3227 &o->nb_stream_maps, o->nb_stream_maps + 1);
3228 m = &o->stream_maps[o->nb_stream_maps - 1];
3229
3230 m->file_index = file_idx;
3231 m->stream_index = i;
3232
3233 if (sync_file_idx >= 0) {
3234 m->sync_file_index = sync_file_idx;
3235 m->sync_stream_index = sync_stream_idx;
3236 } else {
3237 m->sync_file_index = file_idx;
3238 m->sync_stream_index = i;
3239 }
3240 }
3241 }
3242
3243 if (!m) {
3244 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3245 exit_program(1);
3246 }
3247
3248 av_freep(&map);
3249 return 0;
3250 }
3251
3252 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3253 {
3254 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3255 &o->nb_attachments, o->nb_attachments + 1);
3256 o->attachments[o->nb_attachments - 1] = arg;
3257 return 0;
3258 }
3259
3260 /**
3261 * Parse a metadata specifier in arg.
3262 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3263 * @param index for type c/p, chapter/program index is written here
3264 * @param stream_spec for type s, the stream specifier is written here
3265 */
3266 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3267 {
3268 if (*arg) {
3269 *type = *arg;
3270 switch (*arg) {
3271 case 'g':
3272 break;
3273 case 's':
3274 if (*(++arg) && *arg != ':') {
3275 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3276 exit_program(1);
3277 }
3278 *stream_spec = *arg == ':' ? arg + 1 : "";
3279 break;
3280 case 'c':
3281 case 'p':
3282 if (*(++arg) == ':')
3283 *index = strtol(++arg, NULL, 0);
3284 break;
3285 default:
3286 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3287 exit_program(1);
3288 }
3289 } else
3290 *type = 'g';
3291 }
3292
3293 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3294 {
3295 AVDictionary **meta_in = NULL;
3296 AVDictionary **meta_out;
3297 int i, ret = 0;
3298 char type_in, type_out;
3299 const char *istream_spec = NULL, *ostream_spec = NULL;
3300 int idx_in = 0, idx_out = 0;
3301
3302 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
3303 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3304
3305 if (type_in == 'g' || type_out == 'g')
3306 o->metadata_global_manual = 1;
3307 if (type_in == 's' || type_out == 's')
3308 o->metadata_streams_manual = 1;
3309 if (type_in == 'c' || type_out == 'c')
3310 o->metadata_chapters_manual = 1;
3311
3312 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3313 if ((index) < 0 || (index) >= (nb_elems)) {\
3314 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3315 (desc), (index));\
3316 exit_program(1);\
3317 }
3318
3319 #define SET_DICT(type, meta, context, index)\
3320 switch (type) {\
3321 case 'g':\
3322 meta = &context->metadata;\
3323 break;\
3324 case 'c':\
3325 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3326 meta = &context->chapters[index]->metadata;\
3327 break;\
3328 case 'p':\
3329 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3330 meta = &context->programs[index]->metadata;\
3331 break;\
3332 }\
3333
3334 SET_DICT(type_in, meta_in, ic, idx_in);
3335 SET_DICT(type_out, meta_out, oc, idx_out);
3336
3337 /* for input streams choose first matching stream */
3338 if (type_in == 's') {
3339 for (i = 0; i < ic->nb_streams; i++) {
3340 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3341 meta_in = &ic->streams[i]->metadata;
3342 break;
3343 } else if (ret < 0)
3344 exit_program(1);
3345 }
3346 if (!meta_in) {
3347 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3348 exit_program(1);
3349 }
3350 }
3351
3352 if (type_out == 's') {
3353 for (i = 0; i < oc->nb_streams; i++) {
3354 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3355 meta_out = &oc->streams[i]->metadata;
3356 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3357 } else if (ret < 0)
3358 exit_program(1);
3359 }
3360 } else
3361 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3362
3363 return 0;
3364 }
3365
3366 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3367 {
3368 const char *codec_string = encoder ? "encoder" : "decoder";
3369 AVCodec *codec;
3370
3371 codec = encoder ?
3372 avcodec_find_encoder_by_name(name) :
3373 avcodec_find_decoder_by_name(name);
3374 if (!codec) {
3375 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3376 exit_program(1);
3377 }
3378 if (codec->type != type) {
3379 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3380 exit_program(1);
3381 }
3382 return codec;
3383 }
3384
3385 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3386 {
3387 char *codec_name = NULL;
3388
3389 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3390 if (codec_name) {
3391 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3392 st->codec->codec_id = codec->id;
3393 return codec;
3394 } else
3395 return avcodec_find_decoder(st->codec->codec_id);
3396 }
3397
3398 /**
3399 * Add all the streams from the given input file to the global
3400 * list of input streams.
3401 */
3402 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3403 {
3404 int i;
3405
3406 for (i = 0; i < ic->nb_streams; i++) {
3407 AVStream *st = ic->streams[i];
3408 AVCodecContext *dec = st->codec;
3409 InputStream *ist = av_mallocz(sizeof(*ist));
3410 char *framerate = NULL;
3411
3412 if (!ist)
3413 exit_program(1);
3414
3415 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3416 input_streams[nb_input_streams - 1] = ist;
3417
3418 ist->st = st;
3419 ist->file_index = nb_input_files;
3420 ist->discard = 1;
3421 st->discard = AVDISCARD_ALL;
3422 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3423
3424 ist->ts_scale = 1.0;
3425 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3426
3427 ist->dec = choose_decoder(o, ic, st);
3428
3429 switch (dec->codec_type) {
3430 case AVMEDIA_TYPE_VIDEO:
3431 ist->resample_height = dec->height;
3432 ist->resample_width = dec->width;
3433 ist->resample_pix_fmt = dec->pix_fmt;
3434
3435 MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
3436 if (framerate && av_parse_video_rate(&ist->framerate,
3437 framerate) < 0) {
3438 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
3439 framerate);
3440 exit_program(1);
3441 }
3442
3443 break;
3444 case AVMEDIA_TYPE_AUDIO:
3445 guess_input_channel_layout(ist);
3446
3447 ist->resample_sample_fmt = dec->sample_fmt;
3448 ist->resample_sample_rate = dec->sample_rate;
3449 ist->resample_channels = dec->channels;
3450 ist->resample_channel_layout = dec->channel_layout;
3451
3452 break;
3453 case AVMEDIA_TYPE_DATA:
3454 case AVMEDIA_TYPE_SUBTITLE:
3455 case AVMEDIA_TYPE_ATTACHMENT:
3456 case AVMEDIA_TYPE_UNKNOWN:
3457 break;
3458 default:
3459 abort();
3460 }
3461 }
3462 }
3463
3464 static void assert_file_overwrite(const char *filename)
3465 {
3466 if (!file_overwrite &&
3467 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3468 av_strstart(filename, "file:", NULL))) {
3469 if (avio_check(filename, 0) == 0) {
3470 if (!using_stdin) {
3471 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3472 fflush(stderr);
3473 if (!read_yesno()) {
3474 fprintf(stderr, "Not overwriting - exiting\n");
3475 exit_program(1);
3476 }
3477 }
3478 else {
3479 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3480 exit_program(1);
3481 }
3482 }
3483 }
3484 }
3485
3486 static void dump_attachment(AVStream *st, const char *filename)
3487 {
3488 int ret;
3489 AVIOContext *out = NULL;
3490 AVDictionaryEntry *e;
3491
3492 if (!st->codec->extradata_size) {
3493 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3494 nb_input_files - 1, st->index);
3495 return;
3496 }
3497 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3498 filename = e->value;
3499 if (!*filename) {
3500 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3501 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3502 exit_program(1);
3503 }
3504
3505 assert_file_overwrite(filename);
3506
3507 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3508 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3509 filename);
3510 exit_program(1);
3511 }
3512
3513 avio_write(out, st->codec->extradata, st->codec->extradata_size);
3514 avio_flush(out);
3515 avio_close(out);
3516 }
3517
3518 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3519 {
3520 AVFormatContext *ic;
3521 AVInputFormat *file_iformat = NULL;
3522 int err, i, ret;
3523 int64_t timestamp;
3524 uint8_t buf[128];
3525 AVDictionary **opts;
3526 int orig_nb_streams; // number of streams before avformat_find_stream_info
3527
3528 if (o->format) {
3529 if (!(file_iformat = av_find_input_format(o->format))) {
3530 av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3531 exit_program(1);
3532 }
3533 }
3534
3535 if (!strcmp(filename, "-"))
3536 filename = "pipe:";
3537
3538 using_stdin |= !strncmp(filename, "pipe:", 5) ||
3539 !strcmp(filename, "/dev/stdin");
3540
3541 /* get default parameters from command line */
3542 ic = avformat_alloc_context();
3543 if (!ic) {
3544 print_error(filename, AVERROR(ENOMEM));
3545 exit_program(1);
3546 }
3547 if (o->nb_audio_sample_rate) {
3548 snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3549 av_dict_set(&format_opts, "sample_rate", buf, 0);
3550 }
3551 if (o->nb_audio_channels) {
3552 /* because we set audio_channels based on both the "ac" and
3553 * "channel_layout" options, we need to check that the specified
3554 * demuxer actually has the "channels" option before setting it */
3555 if (file_iformat && file_iformat->priv_class &&
3556 av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
3557 AV_OPT_SEARCH_FAKE_OBJ)) {
3558 snprintf(buf, sizeof(buf), "%d",
3559 o->audio_channels[o->nb_audio_channels - 1].u.i);
3560 av_dict_set(&format_opts, "channels", buf, 0);
3561 }
3562 }
3563 if (o->nb_frame_rates) {
3564 /* set the format-level framerate option;
3565 * this is important for video grabbers, e.g. x11 */
3566 if (file_iformat && file_iformat->priv_class &&
3567 av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
3568 AV_OPT_SEARCH_FAKE_OBJ)) {
3569 av_dict_set(&format_opts, "framerate",
3570 o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3571 }
3572 }
3573 if (o->nb_frame_sizes) {
3574 av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3575 }
3576 if (o->nb_frame_pix_fmts)
3577 av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3578
3579 ic->flags |= AVFMT_FLAG_NONBLOCK;
3580 ic->interrupt_callback = int_cb;
3581
3582 /* open the input file with generic libav function */
3583 err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3584 if (err < 0) {
3585 print_error(filename, err);
3586 exit_program(1);
3587 }
3588 assert_avoptions(format_opts);
3589
3590 /* apply forced codec ids */
3591 for (i = 0; i < ic->nb_streams; i++)
3592 choose_decoder(o, ic, ic->streams[i]);
3593
3594 /* Set AVCodecContext options for avformat_find_stream_info */
3595 opts = setup_find_stream_info_opts(ic, codec_opts);
3596 orig_nb_streams = ic->nb_streams;
3597
3598 /* If not enough info to get the stream parameters, we decode the
3599 first frames to get it. (used in mpeg case for example) */
3600 ret = avformat_find_stream_info(ic, opts);
3601 if (ret < 0) {
3602 av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3603 avformat_close_input(&ic);
3604 exit_program(1);
3605 }
3606
3607 timestamp = o->start_time;
3608 /* add the stream start time */
3609 if (ic->start_time != AV_NOPTS_VALUE)
3610 timestamp += ic->start_time;
3611
3612 /* if seeking requested, we execute it */
3613 if (o->start_time != 0) {
3614 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3615 if (ret < 0) {
3616 av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3617 filename, (double)timestamp / AV_TIME_BASE);
3618 }
3619 }
3620
3621 /* update the current parameters so that they match the one of the input stream */
3622 add_input_streams(o, ic);
3623
3624 /* dump the file content */
3625 av_dump_format(ic, nb_input_files, filename, 0);
3626
3627 input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3628 if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
3629 exit_program(1);
3630
3631 input_files[nb_input_files - 1]->ctx = ic;
3632 input_files[nb_input_files - 1]->ist_index = nb_input_streams - ic->nb_streams;
3633 input_files[nb_input_files - 1]->ts_offset = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3634 input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
3635 input_files[nb_input_files - 1]->rate_emu = o->rate_emu;
3636
3637 for (i = 0; i < o->nb_dump_attachment; i++) {
3638 int j;
3639
3640 for (j = 0; j < ic->nb_streams; j++) {
3641 AVStream *st = ic->streams[j];
3642
3643 if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3644 dump_attachment(st, o->dump_attachment[i].u.str);
3645 }
3646 }
3647
3648 for (i = 0; i < orig_nb_streams; i++)
3649 av_dict_free(&opts[i]);
3650 av_freep(&opts);
3651
3652 reset_options(o);
3653 return 0;
3654 }
3655
3656 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3657 AVCodecContext *avctx)
3658 {
3659 char *p;
3660 int n = 1, i;
3661 int64_t t;
3662
3663 for (p = kf; *p; p++)
3664 if (*p == ',')
3665 n++;
3666 ost->forced_kf_count = n;
3667 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3668 if (!ost->forced_kf_pts) {
3669 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3670 exit_program(1);
3671 }
3672 for (i = 0; i < n; i++) {
3673 p = i ? strchr(p, ',') + 1 : kf;
3674 t = parse_time_or_die("force_key_frames", p, 1);
3675 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3676 }
3677 }
3678
3679 static uint8_t *get_line(AVIOContext *s)
3680 {
3681 AVIOContext *line;
3682 uint8_t *buf;
3683 char c;
3684
3685 if (avio_open_dyn_buf(&line) < 0) {
3686 av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3687 exit_program(1);
3688 }
3689
3690 while ((c = avio_r8(s)) && c != '\n')
3691 avio_w8(line, c);
3692 avio_w8(line, 0);
3693 avio_close_dyn_buf(line, &buf);
3694
3695 return buf;
3696 }
3697
3698 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3699 {
3700 int i, ret = 1;
3701 char filename[1000];
3702 const char *base[3] = { getenv("AVCONV_DATADIR"),
3703 getenv("HOME"),
3704 AVCONV_DATADIR,
3705 };
3706
3707 for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3708 if (!base[i])
3709 continue;
3710 if (codec_name) {
3711 snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3712 i != 1 ? "" : "/.avconv", codec_name, preset_name);
3713 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3714 }
3715 if (ret) {
3716 snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3717 i != 1 ? "" : "/.avconv", preset_name);
3718 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3719 }
3720 }
3721 return ret;
3722 }
3723
3724 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3725 {
3726 char *codec_name = NULL;
3727
3728 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3729 if (!codec_name) {
3730 ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,