avconv: reduce overloading for InputStream.pts.
[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 "libavutil/opt.h"
35 #include "libavcodec/audioconvert.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 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/vsrc_buffer.h"
55 #endif
56
57 #if HAVE_SYS_RESOURCE_H
58 #include <sys/types.h>
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #elif HAVE_GETPROCESSTIMES
62 #include <windows.h>
63 #endif
64 #if HAVE_GETPROCESSMEMORYINFO
65 #include <windows.h>
66 #include <psapi.h>
67 #endif
68
69 #if HAVE_SYS_SELECT_H
70 #include <sys/select.h>
71 #endif
72
73 #include <time.h>
74
75 #include "cmdutils.h"
76
77 #include "libavutil/avassert.h"
78
79 #define VSYNC_AUTO -1
80 #define VSYNC_PASSTHROUGH 0
81 #define VSYNC_CFR 1
82 #define VSYNC_VFR 2
83
84 const char program_name[] = "avconv";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct StreamMap {
89 int disabled; /** 1 is this mapping is disabled by a negative map */
90 int file_index;
91 int stream_index;
92 int sync_file_index;
93 int sync_stream_index;
94 } StreamMap;
95
96 /**
97 * select an input file for an output file
98 */
99 typedef struct MetadataMap {
100 int file; ///< file index
101 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
102 int index; ///< stream/chapter/program number
103 } MetadataMap;
104
105 static const OptionDef options[];
106
107 static int video_discard = 0;
108 static int same_quant = 0;
109 static int do_deinterlace = 0;
110 static int intra_dc_precision = 8;
111 static int qp_hist = 0;
112
113 static int file_overwrite = 0;
114 static int do_benchmark = 0;
115 static int do_hex_dump = 0;
116 static int do_pkt_dump = 0;
117 static int do_pass = 0;
118 static char *pass_logfilename_prefix = NULL;
119 static int video_sync_method = VSYNC_AUTO;
120 static int audio_sync_method = 0;
121 static float audio_drift_threshold = 0.1;
122 static int copy_ts = 0;
123 static int copy_tb = 1;
124 static int opt_shortest = 0;
125 static char *vstats_filename;
126 static FILE *vstats_file;
127
128 static int audio_volume = 256;
129
130 static int exit_on_error = 0;
131 static int using_stdin = 0;
132 static int64_t video_size = 0;
133 static int64_t audio_size = 0;
134 static int64_t extra_size = 0;
135 static int nb_frames_dup = 0;
136 static int nb_frames_drop = 0;
137 static int input_sync;
138
139 static float dts_delta_threshold = 10;
140
141 static int print_stats = 1;
142
143 static uint8_t *audio_buf;
144 static unsigned int allocated_audio_buf_size;
145
146 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
147
148 typedef struct FrameBuffer {
149 uint8_t *base[4];
150 uint8_t *data[4];
151 int linesize[4];
152
153 int h, w;
154 enum PixelFormat pix_fmt;
155
156 int refcount;
157 struct InputStream *ist;
158 struct FrameBuffer *next;
159 } FrameBuffer;
160
161 typedef struct InputStream {
162 int file_index;
163 AVStream *st;
164 int discard; /* true if stream data should be discarded */
165 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
166 AVCodec *dec;
167 AVFrame *decoded_frame;
168 AVFrame *filtered_frame;
169
170 int64_t start; /* time when read started */
171 /* predicted dts of the next packet read for this stream or (when there are
172 * several frames in a packet) of the next frame in current packet */
173 int64_t next_dts;
174 int64_t pts; /* current pts */
175 PtsCorrectionContext pts_ctx;
176 double ts_scale;
177 int is_start; /* is 1 at the start and after a discontinuity */
178 int showed_multi_packet_warning;
179 AVDictionary *opts;
180
181 /* a pool of free buffers for decoded data */
182 FrameBuffer *buffer_pool;
183 } InputStream;
184
185 typedef struct InputFile {
186 AVFormatContext *ctx;
187 int eof_reached; /* true if eof reached */
188 int ist_index; /* index of first stream in ist_table */
189 int buffer_size; /* current total buffer size */
190 int64_t ts_offset;
191 int nb_streams; /* number of stream that avconv is aware of; may be different
192 from ctx.nb_streams if new streams appear during av_read_frame() */
193 int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197 int file_index; /* file index */
198 int index; /* stream index in the output file */
199 int source_index; /* InputStream index */
200 AVStream *st; /* stream in the output file */
201 int encoding_needed; /* true if encoding needed for this stream */
202 int frame_number;
203 /* input pts and corresponding output pts
204 for A/V sync */
205 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
206 struct InputStream *sync_ist; /* input stream to sync against */
207 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
208 /* pts of the first frame encoded for this stream, used for limiting
209 * recording time */
210 int64_t first_pts;
211 AVBitStreamFilterContext *bitstream_filters;
212 AVCodec *enc;
213 int64_t max_frames;
214 AVFrame *output_frame;
215
216 /* video only */
217 int video_resample;
218 AVFrame pict_tmp; /* temporary image for resampling */
219 struct SwsContext *img_resample_ctx; /* for image resampling */
220 int resample_height;
221 int resample_width;
222 int resample_pix_fmt;
223 AVRational frame_rate;
224 int force_fps;
225 int top_field_first;
226
227 float frame_aspect_ratio;
228
229 /* forced key frames */
230 int64_t *forced_kf_pts;
231 int forced_kf_count;
232 int forced_kf_index;
233
234 /* audio only */
235 int audio_resample;
236 ReSampleContext *resample; /* for audio resampling */
237 int resample_sample_fmt;
238 int resample_channels;
239 int resample_sample_rate;
240 int reformat_pair;
241 AVAudioConvert *reformat_ctx;
242 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
243 FILE *logfile;
244
245 #if CONFIG_AVFILTER
246 AVFilterContext *output_video_filter;
247 AVFilterContext *input_video_filter;
248 AVFilterBufferRef *picref;
249 char *avfilter;
250 AVFilterGraph *graph;
251 #endif
252
253 int64_t sws_flags;
254 AVDictionary *opts;
255 int is_past_recording_time;
256 int stream_copy;
257 const char *attachment_filename;
258 int copy_initial_nonkeyframes;
259 } OutputStream;
260
261
262 typedef struct OutputFile {
263 AVFormatContext *ctx;
264 AVDictionary *opts;
265 int ost_index; /* index of the first stream in output_streams */
266 int64_t recording_time; /* desired length of the resulting file in microseconds */
267 int64_t start_time; /* start time in microseconds */
268 uint64_t limit_filesize;
269 } OutputFile;
270
271 static InputStream *input_streams = NULL;
272 static int nb_input_streams = 0;
273 static InputFile *input_files = NULL;
274 static int nb_input_files = 0;
275
276 static OutputStream *output_streams = NULL;
277 static int nb_output_streams = 0;
278 static OutputFile *output_files = NULL;
279 static int nb_output_files = 0;
280
281 typedef struct OptionsContext {
282 /* input/output options */
283 int64_t start_time;
284 const char *format;
285
286 SpecifierOpt *codec_names;
287 int nb_codec_names;
288 SpecifierOpt *audio_channels;
289 int nb_audio_channels;
290 SpecifierOpt *audio_sample_rate;
291 int nb_audio_sample_rate;
292 SpecifierOpt *frame_rates;
293 int nb_frame_rates;
294 SpecifierOpt *frame_sizes;
295 int nb_frame_sizes;
296 SpecifierOpt *frame_pix_fmts;
297 int nb_frame_pix_fmts;
298
299 /* input options */
300 int64_t input_ts_offset;
301 int rate_emu;
302
303 SpecifierOpt *ts_scale;
304 int nb_ts_scale;
305 SpecifierOpt *dump_attachment;
306 int nb_dump_attachment;
307
308 /* output options */
309 StreamMap *stream_maps;
310 int nb_stream_maps;
311 /* first item specifies output metadata, second is input */
312 MetadataMap (*meta_data_maps)[2];
313 int nb_meta_data_maps;
314 int metadata_global_manual;
315 int metadata_streams_manual;
316 int metadata_chapters_manual;
317 const char **attachments;
318 int nb_attachments;
319
320 int chapters_input_file;
321
322 int64_t recording_time;
323 uint64_t limit_filesize;
324 float mux_preload;
325 float mux_max_delay;
326
327 int video_disable;
328 int audio_disable;
329 int subtitle_disable;
330 int data_disable;
331
332 /* indexed by output file stream index */
333 int *streamid_map;
334 int nb_streamid_map;
335
336 SpecifierOpt *metadata;
337 int nb_metadata;
338 SpecifierOpt *max_frames;
339 int nb_max_frames;
340 SpecifierOpt *bitstream_filters;
341 int nb_bitstream_filters;
342 SpecifierOpt *codec_tags;
343 int nb_codec_tags;
344 SpecifierOpt *sample_fmts;
345 int nb_sample_fmts;
346 SpecifierOpt *qscale;
347 int nb_qscale;
348 SpecifierOpt *forced_key_frames;
349 int nb_forced_key_frames;
350 SpecifierOpt *force_fps;
351 int nb_force_fps;
352 SpecifierOpt *frame_aspect_ratios;
353 int nb_frame_aspect_ratios;
354 SpecifierOpt *rc_overrides;
355 int nb_rc_overrides;
356 SpecifierOpt *intra_matrices;
357 int nb_intra_matrices;
358 SpecifierOpt *inter_matrices;
359 int nb_inter_matrices;
360 SpecifierOpt *top_field_first;
361 int nb_top_field_first;
362 SpecifierOpt *metadata_map;
363 int nb_metadata_map;
364 SpecifierOpt *presets;
365 int nb_presets;
366 SpecifierOpt *copy_initial_nonkeyframes;
367 int nb_copy_initial_nonkeyframes;
368 #if CONFIG_AVFILTER
369 SpecifierOpt *filters;
370 int nb_filters;
371 #endif
372 } OptionsContext;
373
374 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
375 {\
376 int i, ret;\
377 for (i = 0; i < o->nb_ ## name; i++) {\
378 char *spec = o->name[i].specifier;\
379 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
380 outvar = o->name[i].u.type;\
381 else if (ret < 0)\
382 exit_program(1);\
383 }\
384 }
385
386 static void reset_options(OptionsContext *o)
387 {
388 const OptionDef *po = options;
389
390 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
391 while (po->name) {
392 void *dst = (uint8_t*)o + po->u.off;
393
394 if (po->flags & OPT_SPEC) {
395 SpecifierOpt **so = dst;
396 int i, *count = (int*)(so + 1);
397 for (i = 0; i < *count; i++) {
398 av_freep(&(*so)[i].specifier);
399 if (po->flags & OPT_STRING)
400 av_freep(&(*so)[i].u.str);
401 }
402 av_freep(so);
403 *count = 0;
404 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
405 av_freep(dst);
406 po++;
407 }
408
409 av_freep(&o->stream_maps);
410 av_freep(&o->meta_data_maps);
411 av_freep(&o->streamid_map);
412
413 memset(o, 0, sizeof(*o));
414
415 o->mux_max_delay = 0.7;
416 o->recording_time = INT64_MAX;
417 o->limit_filesize = UINT64_MAX;
418 o->chapters_input_file = INT_MAX;
419
420 uninit_opts();
421 init_opts();
422 }
423
424 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
425 {
426 AVCodecContext *s = ist->st->codec;
427 FrameBuffer *buf = av_mallocz(sizeof(*buf));
428 int i, ret;
429 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
430 int h_chroma_shift, v_chroma_shift;
431 int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
432 int w = s->width, h = s->height;
433
434 if (!buf)
435 return AVERROR(ENOMEM);
436
437 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
438 w += 2*edge;
439 h += 2*edge;
440 }
441
442 avcodec_align_dimensions(s, &w, &h);
443 if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
444 s->pix_fmt, 32)) < 0) {
445 av_freep(&buf);
446 return ret;
447 }
448 /* XXX this shouldn't be needed, but some tests break without this line
449 * those decoders are buggy and need to be fixed.
450 * the following tests fail:
451 * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
452 */
453 memset(buf->base[0], 128, ret);
454
455 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
456 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
457 const int h_shift = i==0 ? 0 : h_chroma_shift;
458 const int v_shift = i==0 ? 0 : v_chroma_shift;
459 if (s->flags & CODEC_FLAG_EMU_EDGE)
460 buf->data[i] = buf->base[i];
461 else
462 buf->data[i] = buf->base[i] +
463 FFALIGN((buf->linesize[i]*edge >> v_shift) +
464 (pixel_size*edge >> h_shift), 32);
465 }
466 buf->w = s->width;
467 buf->h = s->height;
468 buf->pix_fmt = s->pix_fmt;
469 buf->ist = ist;
470
471 *pbuf = buf;
472 return 0;
473 }
474
475 static void free_buffer_pool(InputStream *ist)
476 {
477 FrameBuffer *buf = ist->buffer_pool;
478 while (buf) {
479 ist->buffer_pool = buf->next;
480 av_freep(&buf->base[0]);
481 av_free(buf);
482 buf = ist->buffer_pool;
483 }
484 }
485
486 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
487 {
488 av_assert0(buf->refcount);
489 buf->refcount--;
490 if (!buf->refcount) {
491 buf->next = ist->buffer_pool;
492 ist->buffer_pool = buf;
493 }
494 }
495
496 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
497 {
498 InputStream *ist = s->opaque;
499 FrameBuffer *buf;
500 int ret, i;
501
502 if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
503 return ret;
504
505 buf = ist->buffer_pool;
506 ist->buffer_pool = buf->next;
507 buf->next = NULL;
508 if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
509 av_freep(&buf->base[0]);
510 av_free(buf);
511 if ((ret = alloc_buffer(ist, &buf)) < 0)
512 return ret;
513 }
514 buf->refcount++;
515
516 frame->opaque = buf;
517 frame->type = FF_BUFFER_TYPE_USER;
518 frame->extended_data = frame->data;
519 frame->pkt_pts = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
520
521 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
522 frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
523 frame->data[i] = buf->data[i];
524 frame->linesize[i] = buf->linesize[i];
525 }
526
527 return 0;
528 }
529
530 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
531 {
532 InputStream *ist = s->opaque;
533 FrameBuffer *buf = frame->opaque;
534 int i;
535
536 for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
537 frame->data[i] = NULL;
538
539 unref_buffer(ist, buf);
540 }
541
542 static void filter_release_buffer(AVFilterBuffer *fb)
543 {
544 FrameBuffer *buf = fb->priv;
545 av_free(fb);
546 unref_buffer(buf->ist, buf);
547 }
548
549 #if CONFIG_AVFILTER
550
551 static int configure_video_filters(InputStream *ist, OutputStream *ost)
552 {
553 AVFilterContext *last_filter, *filter;
554 /** filter graph containing all filters including input & output */
555 AVCodecContext *codec = ost->st->codec;
556 AVCodecContext *icodec = ist->st->codec;
557 SinkContext sink_ctx = { .pix_fmt = codec->pix_fmt };
558 AVRational sample_aspect_ratio;
559 char args[255];
560 int ret;
561
562 ost->graph = avfilter_graph_alloc();
563
564 if (ist->st->sample_aspect_ratio.num) {
565 sample_aspect_ratio = ist->st->sample_aspect_ratio;
566 } else
567 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
568
569 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
570 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
571 sample_aspect_ratio.num, sample_aspect_ratio.den);
572
573 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
574 "src", args, NULL, ost->graph);
575 if (ret < 0)
576 return ret;
577 ret = avfilter_graph_create_filter(&ost->output_video_filter, &sink,
578 "out", NULL, &sink_ctx, ost->graph);
579 if (ret < 0)
580 return ret;
581 last_filter = ost->input_video_filter;
582
583 if (codec->width != icodec->width || codec->height != icodec->height) {
584 snprintf(args, 255, "%d:%d:flags=0x%X",
585 codec->width,
586 codec->height,
587 (unsigned)ost->sws_flags);
588 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
589 NULL, args, NULL, ost->graph)) < 0)
590 return ret;
591 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
592 return ret;
593 last_filter = filter;
594 }
595
596 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
597 ost->graph->scale_sws_opts = av_strdup(args);
598
599 if (ost->avfilter) {
600 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
601 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
602
603 outputs->name = av_strdup("in");
604 outputs->filter_ctx = last_filter;
605 outputs->pad_idx = 0;
606 outputs->next = NULL;
607
608 inputs->name = av_strdup("out");
609 inputs->filter_ctx = ost->output_video_filter;
610 inputs->pad_idx = 0;
611 inputs->next = NULL;
612
613 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
614 return ret;
615 } else {
616 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
617 return ret;
618 }
619
620 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
621 return ret;
622
623 codec->width = ost->output_video_filter->inputs[0]->w;
624 codec->height = ost->output_video_filter->inputs[0]->h;
625 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
626 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
627 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
628 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
629
630 return 0;
631 }
632 #endif /* CONFIG_AVFILTER */
633
634 static void term_exit(void)
635 {
636 av_log(NULL, AV_LOG_QUIET, "");
637 }
638
639 static volatile int received_sigterm = 0;
640 static volatile int received_nb_signals = 0;
641
642 static void
643 sigterm_handler(int sig)
644 {
645 received_sigterm = sig;
646 received_nb_signals++;
647 term_exit();
648 }
649
650 static void term_init(void)
651 {
652 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
653 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
654 #ifdef SIGXCPU
655 signal(SIGXCPU, sigterm_handler);
656 #endif
657 }
658
659 static int decode_interrupt_cb(void *ctx)
660 {
661 return received_nb_signals > 1;
662 }
663
664 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
665
666 void exit_program(int ret)
667 {
668 int i;
669
670 /* close files */
671 for (i = 0; i < nb_output_files; i++) {
672 AVFormatContext *s = output_files[i].ctx;
673 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
674 avio_close(s->pb);
675 avformat_free_context(s);
676 av_dict_free(&output_files[i].opts);
677 }
678 for (i = 0; i < nb_output_streams; i++) {
679 AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
680 while (bsfc) {
681 AVBitStreamFilterContext *next = bsfc->next;
682 av_bitstream_filter_close(bsfc);
683 bsfc = next;
684 }
685 output_streams[i].bitstream_filters = NULL;
686
687 if (output_streams[i].output_frame) {
688 AVFrame *frame = output_streams[i].output_frame;
689 if (frame->extended_data != frame->data)
690 av_freep(&frame->extended_data);
691 av_freep(&frame);
692 }
693
694 #if CONFIG_AVFILTER
695 av_freep(&output_streams[i].avfilter);
696 #endif
697 }
698 for (i = 0; i < nb_input_files; i++) {
699 avformat_close_input(&input_files[i].ctx);
700 }
701 for (i = 0; i < nb_input_streams; i++) {
702 av_freep(&input_streams[i].decoded_frame);
703 av_freep(&input_streams[i].filtered_frame);
704 av_dict_free(&input_streams[i].opts);
705 free_buffer_pool(&input_streams[i]);
706 }
707
708 if (vstats_file)
709 fclose(vstats_file);
710 av_free(vstats_filename);
711
712 av_freep(&input_streams);
713 av_freep(&input_files);
714 av_freep(&output_streams);
715 av_freep(&output_files);
716
717 uninit_opts();
718 av_free(audio_buf);
719 allocated_audio_buf_size = 0;
720
721 #if CONFIG_AVFILTER
722 avfilter_uninit();
723 #endif
724 avformat_network_deinit();
725
726 if (received_sigterm) {
727 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
728 (int) received_sigterm);
729 exit (255);
730 }
731
732 exit(ret);
733 }
734
735 static void assert_avoptions(AVDictionary *m)
736 {
737 AVDictionaryEntry *t;
738 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
739 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
740 exit_program(1);
741 }
742 }
743
744 static void assert_codec_experimental(AVCodecContext *c, int encoder)
745 {
746 const char *codec_string = encoder ? "encoder" : "decoder";
747 AVCodec *codec;
748 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
749 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
750 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
751 "results.\nAdd '-strict experimental' if you want to use it.\n",
752 codec_string, c->codec->name);
753 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
754 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
755 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
756 codec_string, codec->name);
757 exit_program(1);
758 }
759 }
760
761 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
762 {
763 if (codec && codec->sample_fmts) {
764 const enum AVSampleFormat *p = codec->sample_fmts;
765 for (; *p != -1; p++) {
766 if (*p == st->codec->sample_fmt)
767 break;
768 }
769 if (*p == -1) {
770 av_log(NULL, AV_LOG_WARNING,
771 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
772 av_get_sample_fmt_name(st->codec->sample_fmt),
773 codec->name,
774 av_get_sample_fmt_name(codec->sample_fmts[0]));
775 st->codec->sample_fmt = codec->sample_fmts[0];
776 }
777 }
778 }
779
780 /**
781 * Update the requested input sample format based on the output sample format.
782 * This is currently only used to request float output from decoders which
783 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
784 * Ideally this will be removed in the future when decoders do not do format
785 * conversion and only output in their native format.
786 */
787 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
788 AVCodecContext *enc)
789 {
790 /* if sample formats match or a decoder sample format has already been
791 requested, just return */
792 if (enc->sample_fmt == dec->sample_fmt ||
793 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
794 return;
795
796 /* if decoder supports more than one output format */
797 if (dec_codec && dec_codec->sample_fmts &&
798 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
799 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
800 const enum AVSampleFormat *p;
801 int min_dec = -1, min_inc = -1;
802
803 /* find a matching sample format in the encoder */
804 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
805 if (*p == enc->sample_fmt) {
806 dec->request_sample_fmt = *p;
807 return;
808 } else if (*p > enc->sample_fmt) {
809 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
810 } else
811 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
812 }
813
814 /* if none match, provide the one that matches quality closest */
815 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
816 enc->sample_fmt - min_dec;
817 }
818 }
819
820 static void choose_sample_rate(AVStream *st, AVCodec *codec)
821 {
822 if (codec && codec->supported_samplerates) {
823 const int *p = codec->supported_samplerates;
824 int best = 0;
825 int best_dist = INT_MAX;
826 for (; *p; p++) {
827 int dist = abs(st->codec->sample_rate - *p);
828 if (dist < best_dist) {
829 best_dist = dist;
830 best = *p;
831 }
832 }
833 if (best_dist) {
834 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
835 }
836 st->codec->sample_rate = best;
837 }
838 }
839
840 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
841 {
842 if (codec && codec->pix_fmts) {
843 const enum PixelFormat *p = codec->pix_fmts;
844 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
845 if (st->codec->codec_id == CODEC_ID_MJPEG) {
846 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
847 } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
848 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
849 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
850 }
851 }
852 for (; *p != PIX_FMT_NONE; p++) {
853 if (*p == st->codec->pix_fmt)
854 break;
855 }
856 if (*p == PIX_FMT_NONE) {
857 if (st->codec->pix_fmt != PIX_FMT_NONE)
858 av_log(NULL, AV_LOG_WARNING,
859 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
860 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
861 codec->name,
862 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
863 st->codec->pix_fmt = codec->pix_fmts[0];
864 }
865 }
866 }
867
868 static double
869 get_sync_ipts(const OutputStream *ost, int64_t pts)
870 {
871 OutputFile *of = &output_files[ost->file_index];
872 return (double)(pts - of->start_time) / AV_TIME_BASE;
873 }
874
875 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
876 {
877 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
878 AVCodecContext *avctx = ost->st->codec;
879 int ret;
880
881 /*
882 * Audio encoders may split the packets -- #frames in != #packets out.
883 * But there is no reordering, so we can limit the number of output packets
884 * by simply dropping them here.
885 * Counting encoded video frames needs to be done separately because of
886 * reordering, see do_video_out()
887 */
888 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
889 if (ost->frame_number >= ost->max_frames)
890 return;
891 ost->frame_number++;
892 }
893
894 while (bsfc) {
895 AVPacket new_pkt = *pkt;
896 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
897 &new_pkt.data, &new_pkt.size,
898 pkt->data, pkt->size,
899 pkt->flags & AV_PKT_FLAG_KEY);
900 if (a > 0) {
901 av_free_packet(pkt);
902 new_pkt.destruct = av_destruct_packet;
903 } else if (a < 0) {
904 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
905 bsfc->filter->name, pkt->stream_index,
906 avctx->codec ? avctx->codec->name : "copy");
907 print_error("", a);
908 if (exit_on_error)
909 exit_program(1);
910 }
911 *pkt = new_pkt;
912
913 bsfc = bsfc->next;
914 }
915
916 pkt->stream_index = ost->index;
917 ret = av_interleaved_write_frame(s, pkt);
918 if (ret < 0) {
919 print_error("av_interleaved_write_frame()", ret);
920 exit_program(1);
921 }
922 }
923
924 static int check_recording_time(OutputStream *ost)
925 {
926 OutputFile *of = &output_files[ost->file_index];
927
928 if (of->recording_time != INT64_MAX &&
929 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
930 AV_TIME_BASE_Q) >= 0) {
931 ost->is_past_recording_time = 1;
932 return 0;
933 }
934 return 1;
935 }
936
937 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
938 {
939 int fill_char = 0x00;
940 if (sample_fmt == AV_SAMPLE_FMT_U8)
941 fill_char = 0x80;
942 memset(buf, fill_char, size);
943 }
944
945 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
946 const uint8_t *buf, int buf_size)
947 {
948 AVCodecContext *enc = ost->st->codec;
949 AVFrame *frame = NULL;
950 AVPacket pkt;
951 int ret, got_packet;
952
953 av_init_packet(&pkt);
954 pkt.data = NULL;
955 pkt.size = 0;
956
957 if (buf) {
958 if (!ost->output_frame) {
959 ost->output_frame = avcodec_alloc_frame();
960 if (!ost->output_frame) {
961 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
962 exit_program(1);
963 }
964 }
965 frame = ost->output_frame;
966 if (frame->extended_data != frame->data)
967 av_freep(&frame->extended_data);
968 avcodec_get_frame_defaults(frame);
969
970 frame->nb_samples = buf_size /
971 (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
972 if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
973 buf, buf_size, 1)) < 0) {
974 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
975 exit_program(1);
976 }
977
978 if (!check_recording_time(ost))
979 return 0;
980
981 ost->sync_opts += frame->nb_samples;
982 }
983
984 got_packet = 0;
985 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
986 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
987 exit_program(1);
988 }
989
990 if (got_packet) {
991 if (pkt.pts != AV_NOPTS_VALUE)
992 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
993 if (pkt.duration > 0)
994 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
995
996 write_frame(s, &pkt, ost);
997
998 audio_size += pkt.size;
999 }
1000
1001 return pkt.size;
1002 }
1003
1004 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1005 InputStream *ist, AVFrame *decoded_frame)
1006 {
1007 uint8_t *buftmp;
1008 int64_t audio_buf_size;
1009
1010 int size_out, frame_bytes, resample_changed;
1011 AVCodecContext *enc = ost->st->codec;
1012 AVCodecContext *dec = ist->st->codec;
1013 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1014 int isize = av_get_bytes_per_sample(dec->sample_fmt);
1015 uint8_t *buf = decoded_frame->data[0];
1016 int size = decoded_frame->nb_samples * dec->channels * isize;
1017 int64_t allocated_for_size = size;
1018
1019 need_realloc:
1020 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
1021 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
1022 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
1023 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
1024 audio_buf_size *= osize * enc->channels;
1025
1026 if (audio_buf_size > INT_MAX) {
1027 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
1028 exit_program(1);
1029 }
1030
1031 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1032 if (!audio_buf) {
1033 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1034 exit_program(1);
1035 }
1036
1037 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
1038 ost->audio_resample = 1;
1039
1040 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
1041 ost->resample_channels != dec->channels ||
1042 ost->resample_sample_rate != dec->sample_rate;
1043
1044 if ((ost->audio_resample && !ost->resample) || resample_changed) {
1045 if (resample_changed) {
1046 av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
1047 ist->file_index, ist->st->index,
1048 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1049 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1050 ost->resample_sample_fmt = dec->sample_fmt;
1051 ost->resample_channels = dec->channels;
1052 ost->resample_sample_rate = dec->sample_rate;
1053 if (ost->resample)
1054 audio_resample_close(ost->resample);
1055 }
1056 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1057 if (audio_sync_method <= 1 &&
1058 ost->resample_sample_fmt == enc->sample_fmt &&
1059 ost->resample_channels == enc->channels &&
1060 ost->resample_sample_rate == enc->sample_rate) {
1061 ost->resample = NULL;
1062 ost->audio_resample = 0;
1063 } else if (ost->audio_resample) {
1064 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
1065 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
1066 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
1067 enc->sample_rate, dec->sample_rate,
1068 enc->sample_fmt, dec->sample_fmt,
1069 16, 10, 0, 0.8);
1070 if (!ost->resample) {
1071 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1072 dec->channels, dec->sample_rate,
1073 enc->channels, enc->sample_rate);
1074 exit_program(1);
1075 }
1076 }
1077 }
1078
1079 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
1080 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
1081 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
1082 if (ost->reformat_ctx)
1083 av_audio_convert_free(ost->reformat_ctx);
1084 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
1085 dec->sample_fmt, 1, NULL, 0);
1086 if (!ost->reformat_ctx) {
1087 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
1088 av_get_sample_fmt_name(dec->sample_fmt),
1089 av_get_sample_fmt_name(enc->sample_fmt));
1090 exit_program(1);
1091 }
1092 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
1093 }
1094
1095 if (audio_sync_method) {
1096 double delta = get_sync_ipts(ost, ist->pts) * enc->sample_rate - ost->sync_opts -
1097 av_fifo_size(ost->fifo) / (enc->channels * osize);
1098 int idelta = delta * dec->sample_rate / enc->sample_rate;
1099 int byte_delta = idelta * isize * dec->channels;
1100
1101 // FIXME resample delay
1102 if (fabs(delta) > 50) {
1103 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1104 if (byte_delta < 0) {
1105 byte_delta = FFMAX(byte_delta, -size);
1106 size += byte_delta;
1107 buf -= byte_delta;
1108 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1109 -byte_delta / (isize * dec->channels));
1110 if (!size)
1111 return;
1112 ist->is_start = 0;
1113 } else {
1114 static uint8_t *input_tmp = NULL;
1115 input_tmp = av_realloc(input_tmp, byte_delta + size);
1116
1117 if (byte_delta > allocated_for_size - size) {
1118 allocated_for_size = byte_delta + (int64_t)size;
1119 goto need_realloc;
1120 }
1121 ist->is_start = 0;
1122
1123 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1124 memcpy(input_tmp + byte_delta, buf, size);
1125 buf = input_tmp;
1126 size += byte_delta;
1127 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1128 }
1129 } else if (audio_sync_method > 1) {
1130 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1131 av_assert0(ost->audio_resample);
1132 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1133 delta, comp, enc->sample_rate);
1134 // fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
1135 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1136 }
1137 }
1138 } else
1139 ost->sync_opts = lrintf(get_sync_ipts(ost, ist->pts) * enc->sample_rate) -
1140 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1141
1142 if (ost->audio_resample) {
1143 buftmp = audio_buf;
1144 size_out = audio_resample(ost->resample,
1145 (short *)buftmp, (short *)buf,
1146 size / (dec->channels * isize));
1147 size_out = size_out * enc->channels * osize;
1148 } else {
1149 buftmp = buf;
1150 size_out = size;
1151 }
1152
1153 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1154 const void *ibuf[6] = { buftmp };
1155 void *obuf[6] = { audio_buf };
1156 int istride[6] = { isize };
1157 int ostride[6] = { osize };
1158 int len = size_out / istride[0];
1159 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1160 printf("av_audio_convert() failed\n");
1161 if (exit_on_error)
1162 exit_program(1);
1163 return;
1164 }
1165 buftmp = audio_buf;
1166 size_out = len * osize;
1167 }
1168
1169 /* now encode as many frames as possible */
1170 if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1171 /* output resampled raw samples */
1172 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1173 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1174 exit_program(1);
1175 }
1176 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1177
1178 frame_bytes = enc->frame_size * osize * enc->channels;
1179
1180 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1181 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1182 encode_audio_frame(s, ost, audio_buf, frame_bytes);
1183 }
1184 } else {
1185 encode_audio_frame(s, ost, buftmp, size_out);
1186 }
1187 }
1188
1189 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1190 {
1191 AVCodecContext *dec;
1192 AVPicture *picture2;
1193 AVPicture picture_tmp;
1194 uint8_t *buf = 0;
1195
1196 dec = ist->st->codec;
1197
1198 /* deinterlace : must be done before any resize */
1199 if (do_deinterlace) {
1200 int size;
1201
1202 /* create temporary picture */
1203 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1204 buf = av_malloc(size);
1205 if (!buf)
1206 return;
1207
1208 picture2 = &picture_tmp;
1209 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1210
1211 if (avpicture_deinterlace(picture2, picture,
1212 dec->pix_fmt, dec->width, dec->height) < 0) {
1213 /* if error, do not deinterlace */
1214 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1215 av_free(buf);
1216 buf = NULL;
1217 picture2 = picture;
1218 }
1219 } else {
1220 picture2 = picture;
1221 }
1222
1223 if (picture != picture2)
1224 *picture = *picture2;
1225 *bufp = buf;
1226 }
1227
1228 static void do_subtitle_out(AVFormatContext *s,
1229 OutputStream *ost,
1230 InputStream *ist,
1231 AVSubtitle *sub,
1232 int64_t pts)
1233 {
1234 static uint8_t *subtitle_out = NULL;
1235 int subtitle_out_max_size = 1024 * 1024;
1236 int subtitle_out_size, nb, i;
1237 AVCodecContext *enc;
1238 AVPacket pkt;
1239
1240 if (pts == AV_NOPTS_VALUE) {
1241 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1242 if (exit_on_error)
1243 exit_program(1);
1244 return;
1245 }
1246
1247 enc = ost->st->codec;
1248
1249 if (!subtitle_out) {
1250 subtitle_out = av_malloc(subtitle_out_max_size);
1251 }
1252
1253 /* Note: DVB subtitle need one packet to draw them and one other
1254 packet to clear them */
1255 /* XXX: signal it in the codec context ? */
1256 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1257 nb = 2;
1258 else
1259 nb = 1;
1260
1261 for (i = 0; i < nb; i++) {
1262 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1263 if (!check_recording_time(ost))
1264 return;
1265
1266 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1267 // start_display_time is required to be 0
1268 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1269 sub->end_display_time -= sub->start_display_time;
1270 sub->start_display_time = 0;
1271 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1272 subtitle_out_max_size, sub);
1273 if (subtitle_out_size < 0) {
1274 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1275 exit_program(1);
1276 }
1277
1278 av_init_packet(&pkt);
1279 pkt.data = subtitle_out;
1280 pkt.size = subtitle_out_size;
1281 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1282 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1283 /* XXX: the pts correction is handled here. Maybe handling
1284 it in the codec would be better */
1285 if (i == 0)
1286 pkt.pts += 90 * sub->start_display_time;
1287 else
1288 pkt.pts += 90 * sub->end_display_time;
1289 }
1290 write_frame(s, &pkt, ost);
1291 }
1292 }
1293
1294 static int bit_buffer_size = 1024 * 256;
1295 static uint8_t *bit_buffer = NULL;
1296
1297 #if !CONFIG_AVFILTER
1298 static void do_video_resample(OutputStream *ost,
1299 InputStream *ist,
1300 AVFrame *in_picture,
1301 AVFrame **out_picture)
1302 {
1303 int resample_changed = 0;
1304 *out_picture = in_picture;
1305
1306 resample_changed = ost->resample_width != in_picture->width ||
1307 ost->resample_height != in_picture->height ||
1308 ost->resample_pix_fmt != in_picture->format;
1309
1310 if (resample_changed) {
1311 av_log(NULL, AV_LOG_INFO,
1312 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1313 ist->file_index, ist->st->index,
1314 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1315 in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
1316 if (!ost->video_resample)
1317 ost->video_resample = 1;
1318 }
1319
1320 if (ost->video_resample) {
1321 *out_picture = &ost->pict_tmp;
1322 if (resample_changed) {
1323 /* initialize a new scaler context */
1324 sws_freeContext(ost->img_resample_ctx);
1325 ost->img_resample_ctx = sws_getContext(
1326 ist->st->codec->width,
1327 ist->st->codec->height,
1328 ist->st->codec->pix_fmt,
1329 ost->st->codec->width,
1330 ost->st->codec->height,
1331 ost->st->codec->pix_fmt,
1332 ost->sws_flags, NULL, NULL, NULL);
1333 if (ost->img_resample_ctx == NULL) {
1334 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1335 exit_program(1);
1336 }
1337 }
1338 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1339 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1340 }
1341 if (resample_changed) {
1342 ost->resample_width = in_picture->width;
1343 ost->resample_height = in_picture->height;
1344 ost->resample_pix_fmt = in_picture->format;
1345 }
1346 }
1347 #endif
1348
1349
1350 static void do_video_out(AVFormatContext *s,
1351 OutputStream *ost,
1352 InputStream *ist,
1353 AVFrame *in_picture,
1354 int *frame_size, float quality)
1355 {
1356 int nb_frames, i, ret, format_video_sync;
1357 AVFrame *final_picture;
1358 AVCodecContext *enc;
1359 double sync_ipts;
1360
1361 enc = ost->st->codec;
1362
1363 sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1364
1365 /* by default, we output a single frame */
1366 nb_frames = 1;
1367
1368 *frame_size = 0;
1369
1370 format_video_sync = video_sync_method;
1371 if (format_video_sync == VSYNC_AUTO)
1372 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
1373 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
1374
1375 if (format_video_sync != VSYNC_PASSTHROUGH) {
1376 double vdelta = sync_ipts - ost->sync_opts;
1377 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1378 if (vdelta < -1.1)
1379 nb_frames = 0;
1380 else if (format_video_sync == VSYNC_VFR) {
1381 if (vdelta <= -0.6) {
1382 nb_frames = 0;
1383 } else if (vdelta > 0.6)
1384 ost->sync_opts = lrintf(sync_ipts);
1385 } else if (vdelta > 1.1)
1386 nb_frames = lrintf(vdelta);
1387 if (nb_frames == 0) {
1388 ++nb_frames_drop;
1389 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1390 } else if (nb_frames > 1) {
1391 nb_frames_dup += nb_frames - 1;
1392 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1393 }
1394 } else
1395 ost->sync_opts = lrintf(sync_ipts);
1396
1397 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1398 if (nb_frames <= 0)
1399 return;
1400
1401 #if !CONFIG_AVFILTER
1402 do_video_resample(ost, ist, in_picture, &final_picture);
1403 #else
1404 final_picture = in_picture;
1405 #endif
1406
1407 if (!ost->frame_number)
1408 ost->first_pts = ost->sync_opts;
1409
1410 /* duplicates frame if needed */
1411 for (i = 0; i < nb_frames; i++) {
1412 AVPacket pkt;
1413 av_init_packet(&pkt);
1414
1415 if (!check_recording_time(ost))
1416 return;
1417
1418 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1419 enc->codec->id == CODEC_ID_RAWVIDEO) {
1420 /* raw pictures are written as AVPicture structure to
1421 avoid any copies. We support temporarily the older
1422 method. */
1423 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1424 enc->coded_frame->top_field_first = in_picture->top_field_first;
1425 pkt.data = (uint8_t *)final_picture;
1426 pkt.size = sizeof(AVPicture);
1427 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1428 pkt.flags |= AV_PKT_FLAG_KEY;
1429
1430 write_frame(s, &pkt, ost);
1431 } else {
1432 AVFrame big_picture;
1433
1434 big_picture = *final_picture;
1435 /* better than nothing: use input picture interlaced
1436 settings */
1437 big_picture.interlaced_frame = in_picture->interlaced_frame;
1438 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1439 if (ost->top_field_first == -1)
1440 big_picture.top_field_first = in_picture->top_field_first;
1441 else
1442 big_picture.top_field_first = !!ost->top_field_first;
1443 }
1444
1445 /* handles same_quant here. This is not correct because it may
1446 not be a global option */
1447 big_picture.quality = quality;
1448 if (!enc->me_threshold)
1449 big_picture.pict_type = 0;
1450 big_picture.pts = ost->sync_opts;
1451 if (ost->forced_kf_index < ost->forced_kf_count &&
1452 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1453 big_picture.pict_type = AV_PICTURE_TYPE_I;
1454 ost->forced_kf_index++;
1455 }
1456 ret = avcodec_encode_video(enc,
1457 bit_buffer, bit_buffer_size,
1458 &big_picture);
1459 if (ret < 0) {
1460 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1461 exit_program(1);
1462 }
1463
1464 if (ret > 0) {
1465 pkt.data = bit_buffer;
1466 pkt.size = ret;
1467 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1468 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1469
1470 if (enc->coded_frame->key_frame)
1471 pkt.flags |= AV_PKT_FLAG_KEY;
1472 write_frame(s, &pkt, ost);
1473 *frame_size = ret;
1474 video_size += ret;
1475
1476 /* if two pass, output log */
1477 if (ost->logfile && enc->stats_out) {
1478 fprintf(ost->logfile, "%s", enc->stats_out);
1479 }
1480 }
1481 }
1482 ost->sync_opts++;
1483 /*
1484 * For video, number of frames in == number of packets out.
1485 * But there may be reordering, so we can't throw away frames on encoder
1486 * flush, we need to limit them here, before they go into encoder.
1487 */
1488 ost->frame_number++;
1489 }
1490 }
1491
1492 static double psnr(double d)
1493 {
1494 return -10.0 * log(d) / log(10.0);
1495 }
1496
1497 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1498 int frame_size)
1499 {
1500 AVCodecContext *enc;
1501 int frame_number;
1502 double ti1, bitrate, avg_bitrate;
1503
1504 /* this is executed just the first time do_video_stats is called */
1505 if (!vstats_file) {
1506 vstats_file = fopen(vstats_filename, "w");
1507 if (!vstats_file) {
1508 perror("fopen");
1509 exit_program(1);
1510 }
1511 }
1512
1513 enc = ost->st->codec;
1514 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1515 frame_number = ost->frame_number;
1516 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1517 if (enc->flags&CODEC_FLAG_PSNR)
1518 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1519
1520 fprintf(vstats_file,"f_size= %6d ", frame_size);
1521 /* compute pts value */
1522 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1523 if (ti1 < 0.01)
1524 ti1 = 0.01;
1525
1526 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1527 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1528 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1529 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1530 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1531 }
1532 }
1533
1534 static void print_report(OutputFile *output_files,
1535 OutputStream *ost_table, int nb_ostreams,
1536 int is_last_report, int64_t timer_start)
1537 {
1538 char buf[1024];
1539 OutputStream *ost;
1540 AVFormatContext *oc;
1541 int64_t total_size;
1542 AVCodecContext *enc;
1543 int frame_number, vid, i;
1544 double bitrate, ti1, pts;
1545 static int64_t last_time = -1;
1546 static int qp_histogram[52];
1547
1548 if (!print_stats && !is_last_report)
1549 return;
1550
1551 if (!is_last_report) {
1552 int64_t cur_time;
1553 /* display the report every 0.5 seconds */
1554 cur_time = av_gettime();
1555 if (last_time == -1) {
1556 last_time = cur_time;
1557 return;
1558 }
1559 if ((cur_time - last_time) < 500000)
1560 return;
1561 last_time = cur_time;
1562 }
1563
1564
1565 oc = output_files[0].ctx;
1566
1567 total_size = avio_size(oc->pb);
1568 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1569 total_size = avio_tell(oc->pb);
1570
1571 buf[0] = '\0';
1572 ti1 = 1e10;
1573 vid = 0;
1574 for (i = 0; i < nb_ostreams; i++) {
1575 float q = -1;
1576 ost = &ost_table[i];
1577 enc = ost->st->codec;
1578 if (!ost->stream_copy && enc->coded_frame)
1579 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1580 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1581 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1582 }
1583 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1584 float t = (av_gettime() - timer_start) / 1000000.0;
1585
1586 frame_number = ost->frame_number;
1587 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1588 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1589 if (is_last_report)
1590 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1591 if (qp_hist) {
1592 int j;
1593 int qp = lrintf(q);
1594 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1595 qp_histogram[qp]++;
1596 for (j = 0; j < 32; j++)
1597 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1598 }
1599 if (enc->flags&CODEC_FLAG_PSNR) {
1600 int j;
1601 double error, error_sum = 0;
1602 double scale, scale_sum = 0;
1603 char type[3] = { 'Y','U','V' };
1604 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1605 for (j = 0; j < 3; j++) {
1606 if (is_last_report) {
1607 error = enc->error[j];
1608 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1609 } else {
1610 error = enc->coded_frame->error[j];
1611 scale = enc->width * enc->height * 255.0 * 255.0;
1612 }
1613 if (j)
1614 scale /= 4;
1615 error_sum += error;
1616 scale_sum += scale;
1617 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1618 }
1619 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1620 }
1621 vid = 1;
1622 }
1623 /* compute min output value */
1624 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1625 if ((pts < ti1) && (pts > 0))
1626 ti1 = pts;
1627 }
1628 if (ti1 < 0.01)
1629 ti1 = 0.01;
1630
1631 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1632
1633 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1634 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1635 (double)total_size / 1024, ti1, bitrate);
1636
1637 if (nb_frames_dup || nb_frames_drop)
1638 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1639 nb_frames_dup, nb_frames_drop);
1640
1641 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1642
1643 fflush(stderr);
1644
1645 if (is_last_report) {
1646 int64_t raw= audio_size + video_size + extra_size;
1647 av_log(NULL, AV_LOG_INFO, "\n");
1648 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1649 video_size / 1024.0,
1650 audio_size / 1024.0,
1651 extra_size / 1024.0,
1652 100.0 * (total_size - raw) / raw
1653 );
1654 }
1655 }
1656
1657 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1658 {
1659 int i, ret;
1660
1661 for (i = 0; i < nb_ostreams; i++) {
1662 OutputStream *ost = &ost_table[i];
1663 AVCodecContext *enc = ost->st->codec;
1664 AVFormatContext *os = output_files[ost->file_index].ctx;
1665 int stop_encoding = 0;
1666
1667 if (!ost->encoding_needed)
1668 continue;
1669
1670 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1671 continue;
1672 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1673 continue;
1674
1675 for (;;) {
1676 AVPacket pkt;
1677 int fifo_bytes;
1678 av_init_packet(&pkt);
1679 pkt.data = NULL;
1680 pkt.size = 0;
1681
1682 switch (ost->st->codec->codec_type) {
1683 case AVMEDIA_TYPE_AUDIO:
1684 fifo_bytes = av_fifo_size(ost->fifo);
1685 if (fifo_bytes > 0) {
1686 /* encode any samples remaining in fifo */
1687 int frame_bytes = fifo_bytes;
1688
1689 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1690
1691 /* pad last frame with silence if needed */
1692 if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
1693 frame_bytes = enc->frame_size * enc->channels *
1694 av_get_bytes_per_sample(enc->sample_fmt);
1695 if (allocated_audio_buf_size < frame_bytes)
1696 exit_program(1);
1697 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1698 }
1699 encode_audio_frame(os, ost, audio_buf, frame_bytes);
1700 } else {
1701 /* flush encoder with NULL frames until it is done
1702 returning packets */
1703 if (encode_audio_frame(os, ost, NULL, 0) == 0) {
1704 stop_encoding = 1;
1705 break;
1706 }
1707 }
1708 break;
1709 case AVMEDIA_TYPE_VIDEO:
1710 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1711 if (ret < 0) {
1712 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1713 exit_program(1);
1714 }
1715 video_size += ret;
1716 if (enc->coded_frame && enc->coded_frame->key_frame)
1717 pkt.flags |= AV_PKT_FLAG_KEY;
1718 if (ost->logfile && enc->stats_out) {
1719 fprintf(ost->logfile, "%s", enc->stats_out);
1720 }
1721 if (ret <= 0) {
1722 stop_encoding = 1;
1723 break;
1724 }
1725 pkt.data = bit_buffer;
1726 pkt.size = ret;
1727 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1728 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1729 write_frame(os, &pkt, ost);
1730 break;
1731 default:
1732 stop_encoding = 1;
1733 }
1734 if (stop_encoding)
1735 break;
1736 }
1737 }
1738 }
1739
1740 /*
1741 * Check whether a packet from ist should be written into ost at this time
1742 */
1743 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1744 {
1745 OutputFile *of = &output_files[ost->file_index];
1746 int ist_index = ist - input_streams;
1747
1748 if (ost->source_index != ist_index)
1749 return 0;
1750
1751 if (of->start_time && ist->pts < of->start_time)
1752 return 0;
1753
1754 return 1;
1755 }
1756
1757 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1758 {
1759 OutputFile *of = &output_files[ost->file_index];
1760 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1761 AVPacket opkt;
1762
1763 av_init_packet(&opkt);
1764
1765 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1766 !ost->copy_initial_nonkeyframes)
1767 return;
1768
1769 if (of->recording_time != INT64_MAX &&
1770 ist->pts >= of->recording_time + of->start_time) {
1771 ost->is_past_recording_time = 1;
1772 return;
1773 }
1774
1775 /* force the input stream PTS */
1776 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1777 audio_size += pkt->size;
1778 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1779 video_size += pkt->size;
1780 ost->sync_opts++;
1781 }
1782
1783 if (pkt->pts != AV_NOPTS_VALUE)
1784 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1785 else
1786 opkt.pts = AV_NOPTS_VALUE;
1787
1788 if (pkt->dts == AV_NOPTS_VALUE)
1789 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1790 else
1791 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1792 opkt.dts -= ost_tb_start_time;
1793
1794 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1795 opkt.flags = pkt->flags;
1796
1797 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1798 if ( ost->st->codec->codec_id != CODEC_ID_H264
1799 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1800 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1801 ) {
1802 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1803 opkt.destruct = av_destruct_packet;
1804 } else {
1805 opkt.data = pkt->data;
1806 opkt.size = pkt->size;
1807 }
1808
1809 write_frame(of->ctx, &opkt, ost);
1810 ost->st->codec->frame_number++;
1811 av_free_packet(&opkt);
1812 }
1813
1814 static void rate_emu_sleep(InputStream *ist)
1815 {
1816 if (input_files[ist->file_index].rate_emu) {
1817 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1818 int64_t now = av_gettime() - ist->start;
1819 if (pts > now)
1820 usleep(pts - now);
1821 }
1822 }
1823
1824 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1825 {
1826 AVFrame *decoded_frame;
1827 AVCodecContext *avctx = ist->st->codec;
1828 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1829 int i, ret;
1830
1831 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1832 return AVERROR(ENOMEM);
1833 else
1834 avcodec_get_frame_defaults(ist->decoded_frame);
1835 decoded_frame = ist->decoded_frame;
1836
1837 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1838 if (ret < 0) {
1839 return ret;
1840 }
1841
1842 if (!*got_output) {
1843 /* no audio frame */
1844 return ret;
1845 }
1846
1847 /* if the decoder provides a pts, use it instead of the last packet pts.
1848 the decoder could be delaying output by a packet or more. */
1849 if (decoded_frame->pts != AV_NOPTS_VALUE)
1850 ist->next_dts = decoded_frame->pts;
1851
1852 /* increment next_dts to use for the case where the input stream does not
1853 have timestamps or there are multiple frames in the packet */
1854 ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1855 avctx->sample_rate;
1856
1857 // preprocess audio (volume)
1858 if (audio_volume != 256) {
1859 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1860 void *samples = decoded_frame->data[0];
1861 switch (avctx->sample_fmt) {
1862 case AV_SAMPLE_FMT_U8:
1863 {
1864 uint8_t *volp = samples;
1865 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1866 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1867 *volp++ = av_clip_uint8(v);
1868 }
1869 break;
1870 }
1871 case AV_SAMPLE_FMT_S16:
1872 {
1873 int16_t *volp = samples;
1874 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1875 int v = ((*volp) * audio_volume + 128) >> 8;
1876 *volp++ = av_clip_int16(v);
1877 }
1878 break;
1879 }
1880 case AV_SAMPLE_FMT_S32:
1881 {
1882 int32_t *volp = samples;
1883 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1884 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1885 *volp++ = av_clipl_int32(v);
1886 }
1887 break;
1888 }
1889 case AV_SAMPLE_FMT_FLT:
1890 {
1891 float *volp = samples;
1892 float scale = audio_volume / 256.f;
1893 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1894 *volp++ *= scale;
1895 }
1896 break;
1897 }
1898 case AV_SAMPLE_FMT_DBL:
1899 {
1900 double *volp = samples;
1901 double scale = audio_volume / 256.;
1902 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1903 *volp++ *= scale;
1904 }
1905 break;
1906 }
1907 default:
1908 av_log(NULL, AV_LOG_FATAL,
1909 "Audio volume adjustment on sample format %s is not supported.\n",
1910 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1911 exit_program(1);
1912 }
1913 }
1914
1915 rate_emu_sleep(ist);
1916
1917 for (i = 0; i < nb_output_streams; i++) {
1918 OutputStream *ost = &output_streams[i];
1919
1920 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1921 continue;
1922 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1923 }
1924
1925 return ret;
1926 }
1927
1928 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1929 {
1930 AVFrame *decoded_frame, *filtered_frame = NULL;
1931 void *buffer_to_free = NULL;
1932 int i, ret = 0;
1933 float quality;
1934 #if CONFIG_AVFILTER
1935 int frame_available = 1;
1936 #endif
1937
1938 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1939 return AVERROR(ENOMEM);
1940 else
1941 avcodec_get_frame_defaults(ist->decoded_frame);
1942 decoded_frame = ist->decoded_frame;
1943 pkt->pts = *pkt_pts;
1944 pkt->dts = ist->pts;
1945 *pkt_pts = AV_NOPTS_VALUE;
1946
1947 ret = avcodec_decode_video2(ist->st->codec,
1948 decoded_frame, got_output, pkt);
1949 if (ret < 0)
1950 return ret;
1951
1952 quality = same_quant ? decoded_frame->quality : 0;
1953 if (!*got_output) {
1954 /* no picture yet */
1955 return ret;
1956 }
1957 ist->next_dts = decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1958 decoded_frame->pkt_dts);
1959 if (pkt->duration)
1960 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1961 else if (ist->st->codec->time_base.num != 0) {
1962 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1963 ist->st->codec->ticks_per_frame;
1964 ist->next_dts += ((int64_t)AV_TIME_BASE *
1965 ist->st->codec->time_base.num * ticks) /
1966 ist->st->codec->time_base.den;
1967 }
1968 pkt->size = 0;
1969 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1970
1971 rate_emu_sleep(ist);
1972
1973 for (i = 0; i < nb_output_streams; i++) {
1974 OutputStream *ost = &output_streams[i];
1975 int frame_size, resample_changed;
1976
1977 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1978 continue;
1979
1980 #if CONFIG_AVFILTER
1981 resample_changed = ost->resample_width != decoded_frame->width ||
1982 ost->resample_height != decoded_frame->height ||
1983 ost->resample_pix_fmt != decoded_frame->format;
1984 if (resample_changed) {
1985 av_log(NULL, AV_LOG_INFO,
1986 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1987 ist->file_index, ist->st->index,
1988 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1989 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1990
1991 avfilter_graph_free(&ost->graph);
1992 if (configure_video_filters(ist, ost)) {
1993 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1994 exit_program(1);
1995 }
1996
1997 ost->resample_width = decoded_frame->width;
1998 ost->resample_height = decoded_frame->height;
1999 ost->resample_pix_fmt = decoded_frame->format;
2000 }
2001
2002 if (ist->st->sample_aspect_ratio.num)
2003 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2004 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
2005 FrameBuffer *buf = decoded_frame->opaque;
2006 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2007 decoded_frame->data, decoded_frame->linesize,
2008 AV_PERM_READ | AV_PERM_PRESERVE,
2009 ist->st->codec->width, ist->st->codec->height,
2010 ist->st->codec->pix_fmt);
2011
2012 avfilter_copy_frame_props(fb, decoded_frame);
2013 fb->buf->priv = buf;
2014 fb->buf->free = filter_release_buffer;
2015
2016 buf->refcount++;
2017 av_buffersrc_buffer(ost->input_video_filter, fb);
2018 } else
2019 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
2020 decoded_frame->pts, decoded_frame->sample_aspect_ratio);
2021
2022 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2023 av_free(buffer_to_free);
2024 return AVERROR(ENOMEM);
2025 } else
2026 avcodec_get_frame_defaults(ist->filtered_frame);
2027 filtered_frame = ist->filtered_frame;
2028
2029 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2030 while (frame_available) {
2031 AVRational ist_pts_tb;
2032 if (ost->output_video_filter)
2033 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
2034 if (ost->picref)
2035 filtered_frame->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2036 if (ost->picref->video && !ost->frame_aspect_ratio)
2037 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
2038 #else
2039 filtered_frame = decoded_frame;
2040 #endif
2041
2042 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2043 same_quant ? quality : ost->st->codec->global_quality);
2044 if (vstats_filename && frame_size)
2045 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2046 #if CONFIG_AVFILTER
2047 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2048 if (ost->picref)
2049 avfilter_unref_buffer(ost->picref);
2050 }
2051 #endif
2052 }
2053
2054 av_free(buffer_to_free);
2055 return ret;
2056 }
2057
2058 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2059 {
2060 AVSubtitle subtitle;
2061 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2062 &subtitle, got_output, pkt);
2063 if (ret < 0)
2064 return ret;
2065 if (!*got_output)
2066 return ret;
2067
2068 rate_emu_sleep(ist);
2069
2070 for (i = 0; i < nb_output_streams; i++) {
2071 OutputStream *ost = &output_streams[i];
2072
2073 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2074 continue;
2075
2076 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2077 }
2078
2079 avsubtitle_free(&subtitle);
2080 return ret;
2081 }
2082
2083 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2084 static int output_packet(InputStream *ist,
2085 OutputStream *ost_table, int nb_ostreams,
2086 const AVPacket *pkt)
2087 {
2088 int i;
2089 int got_output;
2090 int64_t pkt_pts = AV_NOPTS_VALUE;
2091 AVPacket avpkt;
2092
2093 if (ist->next_dts == AV_NOPTS_VALUE)
2094 ist->next_dts = ist->pts;
2095
2096 if (pkt == NULL) {
2097 /* EOF handling */
2098 av_init_packet(&avpkt);
2099 avpkt.data = NULL;
2100 avpkt.size = 0;
2101 goto handle_eof;
2102 } else {
2103 avpkt = *pkt;
2104 }
2105
2106 if (pkt->dts != AV_NOPTS_VALUE)
2107 ist->next_dts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2108 if (pkt->pts != AV_NOPTS_VALUE)
2109 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2110
2111 // while we have more to decode or while the decoder did output something on EOF
2112 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2113 int ret = 0;
2114 handle_eof:
2115
2116 ist->pts = ist->next_dts;
2117
2118 if (avpkt.size && avpkt.size != pkt->size) {
2119 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2120 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2121 ist->showed_multi_packet_warning = 1;
2122 }
2123
2124 switch (ist->st->codec->codec_type) {
2125 case AVMEDIA_TYPE_AUDIO:
2126 ret = transcode_audio (ist, &avpkt, &got_output);
2127 break;
2128 case AVMEDIA_TYPE_VIDEO:
2129 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2130 break;
2131 case AVMEDIA_TYPE_SUBTITLE:
2132 ret = transcode_subtitles(ist, &avpkt, &got_output);
2133 break;
2134 default:
2135 return -1;
2136 }
2137
2138 if (ret < 0)
2139 return ret;
2140 // touch data and size only if not EOF
2141 if (pkt) {
2142 avpkt.data += ret;
2143 avpkt.size -= ret;
2144 }
2145 if (!got_output) {
2146 continue;
2147 }
2148 }
2149
2150 /* handle stream copy */
2151 if (!ist->decoding_needed) {
2152 rate_emu_sleep(ist);
2153 ist->pts = ist->next_dts;
2154 switch (ist->st->codec->codec_type) {
2155 case AVMEDIA_TYPE_AUDIO:
2156 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2157 ist->st->codec->sample_rate;
2158 break;
2159 case AVMEDIA_TYPE_VIDEO:
2160 if (ist->st->codec->time_base.num != 0) {
2161 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2162 ist->next_dts += ((int64_t)AV_TIME_BASE *
2163 ist->st->codec->time_base.num * ticks) /
2164 ist->st->codec->time_base.den;
2165 }
2166 break;
2167 }
2168 }
2169 for (i = 0; pkt && i < nb_ostreams; i++) {
2170 OutputStream *ost = &ost_table[i];
2171
2172 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2173 continue;
2174
2175 do_streamcopy(ist, ost, pkt);
2176 }
2177
2178 return 0;
2179 }
2180
2181 static void print_sdp(OutputFile *output_files, int n)
2182 {
2183 char sdp[2048];
2184 int i;
2185 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2186
2187 if (!avc)
2188 exit_program(1);
2189 for (i = 0; i < n; i++)
2190 avc[i] = output_files[i].ctx;
2191
2192 av_sdp_create(avc, n, sdp, sizeof(sdp));
2193 printf("SDP:\n%s\n", sdp);
2194 fflush(stdout);
2195 av_freep(&avc);
2196 }
2197
2198 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2199 char *error, int error_len)
2200 {
2201 int i;
2202 InputStream *ist = &input_streams[ist_index];
2203 if (ist->decoding_needed) {
2204 AVCodec *codec = ist->dec;
2205 if (!codec) {
2206 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2207 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2208 return AVERROR(EINVAL);
2209 }
2210
2211 /* update requested sample format for the decoder based on the
2212 corresponding encoder sample format */
2213 for (i = 0; i < nb_output_streams; i++) {
2214 OutputStream *ost = &output_streams[i];
2215 if (ost->source_index == ist_index) {
2216 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2217 break;
2218 }
2219 }
2220
2221 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2222 ist->st->codec->get_buffer = codec_get_buffer;
2223 ist->st->codec->release_buffer = codec_release_buffer;
2224 ist->st->codec->opaque = ist;
2225 }
2226
2227 if (!av_dict_get(ist->opts, "threads", NULL, 0))
2228 av_dict_set(&ist->opts, "threads", "auto", 0);
2229 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2230 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2231 ist->file_index, ist->st->index);
2232 return AVERROR(EINVAL);
2233 }
2234 assert_codec_experimental(ist->st->codec, 0);
2235 assert_avoptions(ist->opts);
2236 }
2237
2238 ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2239 ist->next_dts = AV_NOPTS_VALUE;
2240 init_pts_correction(&ist->pts_ctx);
2241 ist->is_start = 1;
2242
2243 return 0;
2244 }
2245
2246 static int transcode_init(OutputFile *output_files,
2247 int nb_output_files,
2248 InputFile *input_files,
2249 int nb_input_files)
2250 {
2251 int ret = 0, i, j, k;
2252 AVFormatContext *oc;
2253 AVCodecContext *codec, *icodec;
2254 OutputStream *ost;
2255 InputStream *ist;
2256 char error[1024];
2257 int want_sdp = 1;
2258
2259 /* init framerate emulation */
2260 for (i = 0; i < nb_input_files; i++) {
2261 InputFile *ifile = &input_files[i];
2262 if (ifile->rate_emu)
2263 for (j = 0; j < ifile->nb_streams; j++)
2264 input_streams[j + ifile->ist_index].start = av_gettime();
2265 }
2266
2267 /* output stream init */
2268 for (i = 0; i < nb_output_files; i++) {
2269 oc = output_files[i].ctx;
2270 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2271 av_dump_format(oc, i, oc->filename, 1);
2272 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2273 return AVERROR(EINVAL);
2274 }
2275 }
2276
2277 /* for each output stream, we compute the right encoding parameters */
2278 for (i = 0; i < nb_output_streams; i++) {
2279 ost = &output_streams[i];
2280 oc = output_files[ost->file_index].ctx;
2281 ist = &input_streams[ost->source_index];
2282
2283 if (ost->attachment_filename)
2284 continue;
2285
2286 codec = ost->st->codec;
2287 icodec = ist->st->codec;
2288
2289 ost->st->disposition = ist->st->disposition;
2290 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2291 codec->chroma_sample_location = icodec->chroma_sample_location;
2292
2293 if (ost->stream_copy) {
2294 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2295
2296 if (extra_size > INT_MAX) {
2297 return AVERROR(EINVAL);
2298 }
2299
2300 /* if stream_copy is selected, no need to decode or encode */
2301 codec->codec_id = icodec->codec_id;
2302 codec->codec_type = icodec->codec_type;
2303
2304 if (!codec->codec_tag) {
2305 if (!oc->oformat->codec_tag ||
2306 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2307 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2308 codec->codec_tag = icodec->codec_tag;
2309 }
2310
2311 codec->bit_rate = icodec->bit_rate;
2312 codec->rc_max_rate = icodec->rc_max_rate;
2313 codec->rc_buffer_size = icodec->rc_buffer_size;
2314 codec->field_order = icodec->field_order;
2315 codec->extradata = av_mallocz(extra_size);
2316 if (!codec->extradata) {
2317 return AVERROR(ENOMEM);
2318 }
2319 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2320 codec->extradata_size = icodec->extradata_size;
2321 if (!copy_tb) {
2322 codec->time_base = icodec->time_base;
2323 codec->time_base.num *= icodec->ticks_per_frame;
2324 av_reduce(&codec->time_base.num, &codec->time_base.den,
2325 codec->time_base.num, codec->time_base.den, INT_MAX);
2326 } else
2327 codec->time_base = ist->st->time_base;
2328
2329 switch (codec->codec_type) {
2330 case AVMEDIA_TYPE_AUDIO:
2331 if (audio_volume != 256) {
2332 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2333 exit_program(1);
2334 }
2335 codec->channel_layout = icodec->channel_layout;
2336 codec->sample_rate = icodec->sample_rate;
2337 codec->channels = icodec->channels;
2338 codec->frame_size = icodec->frame_size;
2339 codec->audio_service_type = icodec->audio_service_type;
2340 codec->block_align = icodec->block_align;
2341 break;
2342 case AVMEDIA_TYPE_VIDEO:
2343 codec->pix_fmt = icodec->pix_fmt;
2344 codec->width = icodec->width;
2345 codec->height = icodec->height;
2346 codec->has_b_frames = icodec->has_b_frames;
2347 if (!codec->sample_aspect_ratio.num) {
2348 codec->sample_aspect_ratio =
2349 ost->st->sample_aspect_ratio =
2350 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2351 ist->st->codec->sample_aspect_ratio.num ?
2352 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2353 }
2354 break;
2355 case AVMEDIA_TYPE_SUBTITLE:
2356 codec->width = icodec->width;
2357 codec->height = icodec->height;
2358 break;
2359 case AVMEDIA_TYPE_DATA:
2360 case AVMEDIA_TYPE_ATTACHMENT:
2361 break;
2362 default:
2363 abort();
2364 }
2365 } else {
2366 if (!ost->enc)
2367 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2368
2369 ist->decoding_needed = 1;
2370 ost->encoding_needed = 1;
2371
2372 switch (codec->codec_type) {
2373 case AVMEDIA_TYPE_AUDIO:
2374 ost->fifo = av_fifo_alloc(1024);
2375 if (!ost->fifo) {
2376 return AVERROR(ENOMEM);
2377 }
2378 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2379
2380 if (!codec->sample_rate)
2381 codec->sample_rate = icodec->sample_rate;
2382 choose_sample_rate(ost->st, ost->enc);
2383 codec->time_base = (AVRational){ 1, codec->sample_rate };
2384
2385 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2386 codec->sample_fmt = icodec->sample_fmt;
2387 choose_sample_fmt(ost->st, ost->enc);
2388
2389 if (!codec->channels)
2390 codec->channels = icodec->channels;
2391 codec->channel_layout = icodec->channel_layout;
2392 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2393 codec->channel_layout = 0;
2394
2395 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2396 icodec->request_channels = codec-> channels;
2397 ost->resample_sample_fmt = icodec->sample_fmt;
2398 ost->resample_sample_rate = icodec->sample_rate;
2399 ost->resample_channels = icodec->channels;
2400 break;
2401 case AVMEDIA_TYPE_VIDEO:
2402 if (codec->pix_fmt == PIX_FMT_NONE)
2403 codec->pix_fmt = icodec->pix_fmt;
2404 choose_pixel_fmt(ost->st, ost->enc);
2405
2406 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2407 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2408 exit_program(1);
2409 }
2410
2411 if (!codec->width || !codec->height) {
2412 codec->width = icodec->width;
2413 codec->height = icodec->height;
2414 }
2415
2416 ost->video_resample = codec->width != icodec->width ||
2417 codec->height != icodec->height ||
2418 codec->pix_fmt != icodec->pix_fmt;
2419 if (ost->video_resample) {
2420 #if !CONFIG_AVFILTER
2421 avcodec_get_frame_defaults(&ost->pict_tmp);
2422 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2423 codec->width, codec->height)) {
2424 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2425 exit_program(1);
2426 }
2427 ost->img_resample_ctx = sws_getContext(
2428 icodec->width,
2429 icodec->height,
2430 icodec->pix_fmt,
2431 codec->width,
2432 codec->height,
2433 codec->pix_fmt,
2434 ost->sws_flags, NULL, NULL, NULL);
2435 if (ost->img_resample_ctx == NULL) {
2436 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2437 exit_program(1);
2438 }
2439 #endif
2440 codec->bits_per_raw_sample = 0;
2441 }
2442
2443 ost->resample_height = icodec->height;
2444 ost->resample_width = icodec->width;
2445 ost->resample_pix_fmt = icodec->pix_fmt;
2446
2447 if (!ost->frame_rate.num)
2448 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2449 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2450 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2451 ost->frame_rate = ost->enc->supported_framerates[idx];
2452 }
2453 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2454
2455 #if CONFIG_AVFILTER
2456 if (configure_video_filters(ist, ost)) {
2457 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2458 exit(1);
2459 }
2460 #endif
2461 break;
2462 case AVMEDIA_TYPE_SUBTITLE:
2463 codec->time_base = (AVRational){1, 1000};
2464 break;
2465 default:
2466 abort();
2467 break;
2468 }
2469 /* two pass mode */
2470 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2471 char logfilename[1024];
2472 FILE *f;
2473
2474 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2475 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2476 i);
2477 if (codec->flags & CODEC_FLAG_PASS1) {
2478 f = fopen(logfilename, "wb");
2479 if (!f) {
2480 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2481 logfilename, strerror(errno));
2482 exit_program(1);
2483 }
2484 ost->logfile = f;
2485 } else {
2486 char *logbuffer;
2487 size_t logbuffer_size;
2488 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2489 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2490 logfilename);
2491 exit_program(1);
2492 }
2493 codec->stats_in = logbuffer;
2494 }
2495 }
2496 }
2497 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2498 int size = codec->width * codec->height;
2499 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2500 }
2501 }
2502
2503 if (!bit_buffer)
2504 bit_buffer = av_malloc(bit_buffer_size);
2505 if (!bit_buffer) {
2506 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2507 bit_buffer_size);
2508 return AVERROR(ENOMEM);
2509 }
2510
2511 /* open each encoder */
2512 for (i = 0; i < nb_output_streams; i++) {
2513 ost = &output_streams[i];
2514 if (ost->encoding_needed) {
2515 AVCodec *codec = ost->enc;
2516 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2517 if (!codec) {
2518 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2519 ost->st->codec->codec_id, ost->file_index, ost->index);
2520 ret = AVERROR(EINVAL);
2521 goto dump_format;
2522 }
2523 if (dec->subtitle_header) {
2524 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2525 if (!ost->st->codec->subtitle_header) {
2526 ret = AVERROR(ENOMEM);
2527 goto dump_format;
2528 }
2529 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2530 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2531 }
2532 if (!av_dict_get(ost->opts, "threads", NULL, 0))
2533 av_dict_set(&ost->opts, "threads", "auto", 0);
2534 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2535 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2536 ost->file_index, ost->index);
2537 ret = AVERROR(EINVAL);
2538 goto dump_format;
2539 }
2540 assert_codec_experimental(ost->st->codec, 1);
2541 assert_avoptions(ost->opts);
2542 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2543 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2544 "It takes bits/s as argument, not kbits/s\n");
2545 extra_size += ost->st->codec->extradata_size;
2546
2547 if (ost->st->codec->me_threshold)
2548 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2549 }
2550 }
2551
2552 /* init input streams */
2553 for (i = 0; i < nb_input_streams; i++)
2554 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2555 goto dump_format;
2556
2557 /* discard unused programs */
2558 for (i = 0; i < nb_input_files; i++) {
2559 InputFile *ifile = &input_files[i];
2560 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2561 AVProgram *p = ifile->ctx->programs[j];
2562 int discard = AVDISCARD_ALL;
2563
2564 for (k = 0; k < p->nb_stream_indexes; k++)
2565 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2566 discard = AVDISCARD_DEFAULT;
2567 break;
2568 }
2569 p->discard = discard;
2570 }
2571 }
2572
2573 /* open files and write file headers */
2574 for (i = 0; i < nb_output_files; i++) {
2575 oc = output_files[i].ctx;
2576 oc->interrupt_callback = int_cb;
2577 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2578 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2579 ret = AVERROR(EINVAL);
2580 goto dump_format;
2581 }
2582 assert_avoptions(output_files[i].opts);
2583 if (strcmp(oc->oformat->name, "rtp")) {
2584 want_sdp = 0;
2585 }
2586 }
2587
2588 dump_format:
2589 /* dump the file output parameters - cannot be done before in case
2590 of stream copy */
2591 for (i = 0; i < nb_output_files; i++) {
2592 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2593 }
2594
2595 /* dump the stream mapping */
2596 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2597 for (i = 0; i < nb_output_streams; i++) {
2598 ost = &output_streams[i];
2599
2600 if (ost->attachment_filename) {
2601 /* an attached file */
2602 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2603 ost->attachment_filename, ost->file_index, ost->index);
2604 continue;
2605 }
2606 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2607 input_streams[ost->source_index].file_index,
2608 input_streams[ost->source_index].st->index,
2609 ost->file_index,
2610 ost->index);
2611 if (ost->sync_ist != &input_streams[ost->source_index])
2612 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2613 ost->sync_ist->file_index,
2614 ost->sync_ist->st->index);
2615 if (ost->stream_copy)
2616 av_log(NULL, AV_LOG_INFO, " (copy)");
2617 else
2618 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2619 input_streams[ost->source_index].dec->name : "?",
2620 ost->enc ? ost->enc->name : "?");
2621 av_log(NULL, AV_LOG_INFO, "\n");
2622 }
2623
2624 if (ret) {
2625 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2626 return ret;
2627 }
2628
2629 if (want_sdp) {
2630 print_sdp(output_files, nb_output_files);
2631 }
2632
2633 return 0;
2634 }
2635
2636 /*
2637 * The following code is the main loop of the file converter
2638 */
2639 static int transcode(OutputFile *output_files,
2640 int nb_output_files,
2641 InputFile *input_files,
2642 int nb_input_files)
2643 {
2644 int ret, i;
2645 AVFormatContext *is, *os;
2646 OutputStream *ost;
2647 InputStream *ist;
2648 uint8_t *no_packet;
2649 int no_packet_count = 0;
2650 int64_t timer_start;
2651
2652 if (!(no_packet = av_mallocz(nb_input_files)))
2653 exit_program(1);
2654
2655 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2656 if (ret < 0)
2657 goto fail;
2658
2659 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2660 term_init();
2661
2662 timer_start = av_gettime();
2663
2664 for (; received_sigterm == 0;) {
2665 int file_index, ist_index;
2666 AVPacket pkt;
2667 int64_t ipts_min;
2668 double opts_min;
2669
2670 ipts_min = INT64_MAX;
2671 opts_min = 1e100;
2672
2673 /* select the stream that we must read now by looking at the
2674 smallest output pts */
2675 file_index = -1;
2676 for (i = 0; i < nb_output_streams; i++) {
2677 OutputFile *of;
2678 int64_t ipts;
2679 double opts;
2680 ost = &output_streams[i];
2681 of = &output_files[ost->file_index];
2682 os = output_files[ost->file_index].ctx;
2683 ist = &input_streams[ost->source_index];
2684 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2685 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2686 continue;
2687 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2688 ipts = ist->pts;
2689 if (!input_files[ist->file_index].eof_reached) {
2690 if (ipts < ipts_min) {
2691 ipts_min = ipts;
2692 if (input_sync)
2693 file_index = ist->file_index;
2694 }
2695 if (opts < opts_min) {
2696 opts_min = opts;
2697 if (!input_sync) file_index = ist->file_index;
2698 }
2699 }
2700 if (ost->frame_number >= ost->max_frames) {
2701 int j;
2702 for (j = 0; j < of->ctx->nb_streams; j++)
2703 output_streams[of->ost_index + j].is_past_recording_time = 1;
2704 continue;
2705 }
2706 }
2707 /* if none, if is finished */
2708 if (file_index < 0) {
2709 if (no_packet_count) {
2710 no_packet_count = 0;
2711 memset(no_packet, 0, nb_input_files);
2712 usleep(10000);
2713 continue;
2714 }
2715 break;
2716 }
2717
2718 /* read a frame from it and output it in the fifo */
2719 is = input_files[file_index].ctx;
2720 ret = av_read_frame(is, &pkt);
2721 if (ret == AVERROR(EAGAIN)) {
2722 no_packet[file_index] = 1;
2723 no_packet_count++;
2724 continue;
2725 }
2726 if (ret < 0) {
2727 input_files[file_index].eof_reached = 1;
2728 if (opt_shortest)
2729 break;
2730 else
2731 continue;
2732 }
2733
2734 no_packet_count = 0;
2735 memset(no_packet, 0, nb_input_files);
2736
2737 if (do_pkt_dump) {
2738 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2739 is->streams[pkt.stream_index]);
2740 }
2741 /* the following test is needed in case new streams appear
2742 dynamically in stream : we ignore them */
2743 if (pkt.stream_index >= input_files[file_index].nb_streams)
2744 goto discard_packet;
2745 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2746 ist = &input_streams[ist_index];
2747 if (ist->discard)
2748 goto discard_packet;
2749
2750 if (pkt.dts != AV_NOPTS_VALUE)
2751 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2752 if (pkt.pts != AV_NOPTS_VALUE)
2753 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2754
2755 if (pkt.pts != AV_NOPTS_VALUE)
2756 pkt.pts *= ist->ts_scale;
2757 if (pkt.dts != AV_NOPTS_VALUE)
2758 pkt.dts *= ist->ts_scale;
2759
2760 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2761 // ist->next_dts,
2762 // pkt.dts, input_files[ist->file_index].ts_offset,
2763 // ist->st->codec->codec_type);
2764 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE
2765 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2766 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2767 int64_t delta = pkt_dts - ist->next_dts;
2768 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2769 input_files[ist->file_index].ts_offset -= delta;
2770 av_log(NULL, AV_LOG_DEBUG,
2771 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2772 delta, input_files[ist->file_index].ts_offset);
2773 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2774 if (pkt.pts != AV_NOPTS_VALUE)
2775 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2776 }
2777 }
2778
2779 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2780 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2781
2782 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2783 ist->file_index, ist->st->index);
2784 if (exit_on_error)
2785 exit_program(1);
2786 av_free_packet(&pkt);
2787 continue;
2788 }
2789
2790 discard_packet:
2791 av_free_packet(&pkt);
2792
2793 /* dump report by using the output first video and audio streams */
2794 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2795 }
2796
2797 /* at the end of stream, we must flush the decoder buffers */
2798 for (i = 0; i < nb_input_streams; i++) {
2799 ist = &input_streams[i];
2800 if (ist->decoding_needed) {
2801 output_packet(ist, output_streams, nb_output_streams, NULL);
2802 }
2803 }
2804 flush_encoders(output_streams, nb_output_streams);
2805
2806 term_exit();
2807
2808 /* write the trailer if needed and close file */
2809 for (i = 0; i < nb_output_files; i++) {
2810 os = output_files[i].ctx;
2811 av_write_trailer(os);
2812 }
2813
2814 /* dump report by using the first video and audio streams */
2815 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2816
2817 /* close each encoder */
2818 for (i = 0; i < nb_output_streams; i++) {
2819 ost = &output_streams[i];
2820 if (ost->encoding_needed) {
2821 av_freep(&ost->st->codec->stats_in);
2822 avcodec_close(ost->st->codec);
2823 }
2824 #if CONFIG_AVFILTER
2825 avfilter_graph_free(&ost->graph);
2826 #endif
2827 }
2828
2829 /* close each decoder */
2830 for (i = 0; i < nb_input_streams; i++) {
2831 ist = &input_streams[i];
2832 if (ist->decoding_needed) {
2833 avcodec_close(ist->st->codec);
2834 }
2835 }
2836
2837 /* finished ! */
2838 ret = 0;
2839
2840 fail:
2841 av_freep(&bit_buffer);
2842 av_freep(&no_packet);
2843
2844 if (output_streams) {
2845 for (i = 0; i < nb_output_streams; i++) {
2846 ost = &output_streams[i];
2847 if (ost) {
2848 if (ost->stream_copy)
2849 av_freep(&ost->st->codec->extradata);
2850 if (ost->logfile) {
2851 fclose(ost->logfile);
2852 ost->logfile = NULL;
2853 }
2854 av_fifo_free(ost->fifo); /* works even if fifo is not
2855 initialized but set to zero */
2856 av_freep(&ost->st->codec->subtitle_header);
2857 av_free(ost->pict_tmp.data[0]);
2858 av_free(ost->forced_kf_pts);
2859 if (ost->video_resample)
2860 sws_freeContext(ost->img_resample_ctx);
2861 if (ost->resample)
2862 audio_resample_close(ost->resample);
2863 if (ost->reformat_ctx)
2864 av_audio_convert_free(ost->reformat_ctx);
2865 av_dict_free(&ost->opts);
2866 }
2867 }
2868 }
2869 return ret;
2870 }
2871
2872 static double parse_frame_aspect_ratio(const char *arg)
2873 {
2874 int x = 0, y = 0;
2875 double ar = 0;
2876 const char *p;
2877 char *end;
2878
2879 p = strchr(arg, ':');
2880 if (p) {
2881 x = strtol(arg, &end, 10);
2882 if (end == p)
2883 y = strtol(end + 1, &end, 10);
2884 if (x > 0 && y > 0)
2885 ar = (double)x / (double)y;
2886 } else
2887 ar = strtod(arg, NULL);
2888
2889 if (!ar) {
2890 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2891 exit_program(1);
2892 }
2893 return ar;
2894 }
2895
2896 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2897 {
2898 return parse_option(o, "codec:a", arg, options);
2899 }
2900
2901 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2902 {
2903 return parse_option(o, "codec:v", arg, options);
2904 }
2905
2906 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2907 {
2908 return parse_option(o, "codec:s", arg, options);
2909 }
2910
2911 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2912 {
2913 return parse_option(o, "codec:d", arg, options);
2914 }
2915
2916 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2917 {
2918 StreamMap *m = NULL;
2919 int i, negative = 0, file_idx;
2920 int sync_file_idx = -1, sync_stream_idx;
2921 char *p, *sync;
2922 char *map;
2923
2924 if (*arg == '-') {
2925 negative = 1;
2926 arg++;
2927 }
2928 map = av_strdup(arg);
2929
2930 /* parse sync stream first, just pick first matching stream */
2931 if (sync = strchr(map, ',')) {
2932 *sync = 0;
2933 sync_file_idx = strtol(sync + 1, &sync, 0);
2934 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2935 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2936 exit_program(1);
2937 }
2938 if (*sync)
2939 sync++;
2940 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2941 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2942 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2943 sync_stream_idx = i;
2944 break;
2945 }
2946 if (i == input_files[sync_file_idx].nb_streams) {
2947 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2948 "match any streams.\n", arg);
2949 exit_program(1);
2950 }
2951 }
2952
2953
2954 file_idx = strtol(map, &p, 0);
2955 if (file_idx >= nb_input_files || file_idx < 0) {
2956 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2957 exit_program(1);
2958 }
2959 if (negative)
2960 /* disable some already defined maps */
2961 for (i = 0; i < o->nb_stream_maps; i++) {
2962 m = &o->stream_maps[i];
2963 if (file_idx == m->file_index &&
2964 check_stream_specifier(input_files[m->file_index].ctx,
2965 input_files[m->file_index].ctx->streams[m->stream_index],
2966 *p == ':' ? p + 1 : p) > 0)
2967 m->disabled = 1;
2968 }
2969 else
2970 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2971 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2972 *p == ':' ? p + 1 : p) <= 0)
2973 continue;
2974 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2975 &o->nb_stream_maps, o->nb_stream_maps + 1);
2976 m = &o->stream_maps[o->nb_stream_maps - 1];
2977
2978 m->file_index = file_idx;
2979 m->stream_index = i;
2980
2981 if (sync_file_idx >= 0) {
2982 m->sync_file_index = sync_file_idx;
2983 m->sync_stream_index = sync_stream_idx;
2984 } else {
2985 m->sync_file_index = file_idx;
2986 m->sync_stream_index = i;
2987 }
2988 }
2989
2990 if (!m) {
2991 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2992 exit_program(1);
2993 }
2994
2995 av_freep(&map);
2996 return 0;
2997 }
2998
2999 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3000 {
3001 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3002 &o->nb_attachments, o->nb_attachments + 1);
3003 o->attachments[o->nb_attachments - 1] = arg;
3004 return 0;
3005 }
3006
3007 /**
3008 * Parse a metadata specifier in arg.
3009 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3010 * @param index for type c/p, chapter/program index is written here
3011 * @param stream_spec for type s, the stream specifier is written here
3012 */
3013 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3014 {
3015 if (*arg) {
3016 *type = *arg;
3017 switch (*arg) {
3018 case 'g':
3019 break;
3020 case 's':
3021 if (*(++arg) && *arg != ':') {
3022 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3023 exit_program(1);
3024 }
3025 *stream_spec = *arg == ':' ? arg + 1 : "";
3026 break;
3027 case 'c':
3028 case 'p':
3029 if (*(++arg) == ':')
3030 *index = strtol(++arg, NULL, 0);
3031 break;
3032 default:
3033 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3034 exit_program(1);
3035 }
3036 } else
3037 *type = 'g';
3038 }
3039
3040 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3041 {
3042 AVDictionary **meta_in = NULL;
3043 AVDictionary **meta_out;
3044 int i, ret = 0;
3045 char type_in, type_out;
3046 const char *istream_spec = NULL, *ostream_spec = NULL;
3047 int idx_in = 0, idx_out = 0;
3048
3049 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
3050 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3051
3052 if (type_in == 'g' || type_out == 'g')
3053 o->metadata_global_manual = 1;
3054 if (type_in == 's' || type_out == 's')
3055 o->metadata_streams_manual = 1;
3056 if (type_in == 'c' || type_out == 'c')
3057 o->metadata_chapters_manual = 1;
3058
3059 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3060 if ((index) < 0 || (index) >= (nb_elems)) {\
3061 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3062 (desc), (index));\
3063 exit_program(1);\
3064 }
3065
3066 #define SET_DICT(type, meta, context, index)\
3067 switch (type) {\
3068 case 'g':\
3069 meta = &context->metadata;\
3070 break;\
3071 case 'c':\
3072 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3073 meta = &context->chapters[index]->metadata;\
3074 break;\
3075 case 'p':\
3076 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3077 meta = &context->programs[index]->metadata;\
3078 break;\
3079 }\
3080
3081 SET_DICT(type_in, meta_in, ic, idx_in);
3082 SET_DICT(type_out, meta_out, oc, idx_out);
3083
3084 /* for input streams choose first matching stream */
3085 if (type_in == 's') {
3086 for (i = 0; i < ic->nb_streams; i++) {
3087 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3088 meta_in = &ic->streams[i]->metadata;
3089 break;
3090 } else if (ret < 0)
3091 exit_program(1);
3092 }
3093 if (!meta_in) {
3094 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3095 exit_program(1);
3096 }
3097 }
3098
3099 if (type_out == 's') {
3100 for (i = 0; i < oc->nb_streams; i++) {
3101 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3102 meta_out = &oc->streams[i]->metadata;
3103 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3104 } else if (ret < 0)
3105 exit_program(1);
3106 }
3107 } else
3108 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3109
3110 return 0;
3111 }
3112
3113 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3114 {
3115 const char *codec_string = encoder ? "encoder" : "decoder";
3116 AVCodec *codec;
3117
3118 codec = encoder ?
3119 avcodec_find_encoder_by_name(name) :
3120 avcodec_find_decoder_by_name(name);
3121 if (!codec) {
3122 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3123 exit_program(1);
3124 }
3125 if (codec->type != type) {
3126 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3127 exit_program(1);
3128 }
3129 return codec;
3130 }
3131
3132 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3133 {
3134 char *codec_name = NULL;
3135
3136 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3137 if (codec_name) {
3138 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3139 st->codec->codec_id = codec->id;
3140 return codec;
3141 } else
3142 return avcodec_find_decoder(st->codec->codec_id);
3143 }
3144
3145 /**
3146 * Add all the streams from the given input file to the global
3147 * list of input streams.
3148 */
3149 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3150 {
3151 int i;
3152
3153 for (i = 0; i < ic->nb_streams; i++) {
3154 AVStream *st = ic->streams[i];
3155 AVCodecContext *dec = st->codec;
3156 InputStream *ist;
3157
3158 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3159 ist = &input_streams[nb_input_streams - 1];
3160 ist->st = st;
3161 ist->file_index = nb_input_files;
3162 ist->discard = 1;
3163 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3164
3165 ist->ts_scale = 1.0;
3166 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3167
3168 ist->dec = choose_decoder(o, ic, st);
3169
3170 switch (dec->codec_type) {
3171 case AVMEDIA_TYPE_AUDIO:
3172 if (o->audio_disable)
3173 st->discard = AVDISCARD_ALL;
3174 break;
3175 case AVMEDIA_TYPE_VIDEO:
3176 if (dec->lowres) {
3177 dec->flags |= CODEC_FLAG_EMU_EDGE;
3178 dec->height >>= dec->lowres;
3179 dec->width >>= dec->lowres;
3180 }
3181
3182 if (o->video_disable)
3183 st->discard = AVDISCARD_ALL;
3184 else if (video_discard)
3185 st->discard = video_discard;
3186 break;
3187 case AVMEDIA_TYPE_DATA:
3188 break;
3189 case AVMEDIA_TYPE_SUBTITLE:
3190 if (o->subtitle_disable)
3191 st->discard = AVDISCARD_ALL;
3192 break;
3193 case AVMEDIA_TYPE_ATTACHMENT:
3194 case AVMEDIA_TYPE_UNKNOWN:
3195 break;
3196 default:
3197 abort();
3198 }
3199 }
3200 }
3201
3202 static void assert_file_overwrite(const char *filename)
3203 {
3204 if (!file_overwrite &&
3205 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3206 av_strstart(filename, "file:", NULL))) {
3207 if (avio_check(filename, 0) == 0) {
3208 if (!using_stdin) {
3209 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3210 fflush(stderr);
3211 if (!read_yesno()) {