avconv: free bitstream filters
[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 const char program_name[] = "avconv";
80 const int program_birth_year = 2000;
81
82 /* select an input stream for an output stream */
83 typedef struct StreamMap {
84 int disabled; /** 1 is this mapping is disabled by a negative map */
85 int file_index;
86 int stream_index;
87 int sync_file_index;
88 int sync_stream_index;
89 } StreamMap;
90
91 /**
92 * select an input file for an output file
93 */
94 typedef struct MetadataMap {
95 int file; ///< file index
96 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
97 int index; ///< stream/chapter/program number
98 } MetadataMap;
99
100 static const OptionDef options[];
101
102 static int video_discard = 0;
103 static int same_quant = 0;
104 static int do_deinterlace = 0;
105 static int intra_dc_precision = 8;
106 static int qp_hist = 0;
107
108 static int file_overwrite = 0;
109 static int do_benchmark = 0;
110 static int do_hex_dump = 0;
111 static int do_pkt_dump = 0;
112 static int do_pass = 0;
113 static char *pass_logfilename_prefix = NULL;
114 static int video_sync_method = -1;
115 static int audio_sync_method = 0;
116 static float audio_drift_threshold = 0.1;
117 static int copy_ts = 0;
118 static int copy_tb = 1;
119 static int opt_shortest = 0;
120 static char *vstats_filename;
121 static FILE *vstats_file;
122
123 static int audio_volume = 256;
124
125 static int exit_on_error = 0;
126 static int using_stdin = 0;
127 static int64_t video_size = 0;
128 static int64_t audio_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int input_sync;
133
134 static float dts_delta_threshold = 10;
135
136 static int print_stats = 1;
137
138 static uint8_t *audio_buf;
139 static uint8_t *audio_out;
140 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
143
144 typedef struct FrameBuffer {
145 uint8_t *base[4];
146 uint8_t *data[4];
147 int linesize[4];
148
149 int h, w;
150 enum PixelFormat pix_fmt;
151
152 int refcount;
153 struct InputStream *ist;
154 struct FrameBuffer *next;
155 } FrameBuffer;
156
157 typedef struct InputStream {
158 int file_index;
159 AVStream *st;
160 int discard; /* true if stream data should be discarded */
161 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
162 AVCodec *dec;
163 AVFrame *decoded_frame;
164 AVFrame *filtered_frame;
165
166 int64_t start; /* time when read started */
167 int64_t next_pts; /* synthetic pts for cases where pkt.pts
168 is not defined */
169 int64_t pts; /* current pts */
170 PtsCorrectionContext pts_ctx;
171 double ts_scale;
172 int is_start; /* is 1 at the start and after a discontinuity */
173 int showed_multi_packet_warning;
174 AVDictionary *opts;
175
176 /* a pool of free buffers for decoded data */
177 FrameBuffer *buffer_pool;
178 } InputStream;
179
180 typedef struct InputFile {
181 AVFormatContext *ctx;
182 int eof_reached; /* true if eof reached */
183 int ist_index; /* index of first stream in ist_table */
184 int buffer_size; /* current total buffer size */
185 int64_t ts_offset;
186 int nb_streams; /* number of stream that avconv is aware of; may be different
187 from ctx.nb_streams if new streams appear during av_read_frame() */
188 int rate_emu;
189 } InputFile;
190
191 typedef struct OutputStream {
192 int file_index; /* file index */
193 int index; /* stream index in the output file */
194 int source_index; /* InputStream index */
195 AVStream *st; /* stream in the output file */
196 int encoding_needed; /* true if encoding needed for this stream */
197 int frame_number;
198 /* input pts and corresponding output pts
199 for A/V sync */
200 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
201 struct InputStream *sync_ist; /* input stream to sync against */
202 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
203 AVBitStreamFilterContext *bitstream_filters;
204 AVCodec *enc;
205 int64_t max_frames;
206
207 /* video only */
208 int video_resample;
209 AVFrame pict_tmp; /* temporary image for resampling */
210 struct SwsContext *img_resample_ctx; /* for image resampling */
211 int resample_height;
212 int resample_width;
213 int resample_pix_fmt;
214 AVRational frame_rate;
215 int force_fps;
216 int top_field_first;
217
218 float frame_aspect_ratio;
219
220 /* forced key frames */
221 int64_t *forced_kf_pts;
222 int forced_kf_count;
223 int forced_kf_index;
224
225 /* audio only */
226 int audio_resample;
227 ReSampleContext *resample; /* for audio resampling */
228 int resample_sample_fmt;
229 int resample_channels;
230 int resample_sample_rate;
231 int reformat_pair;
232 AVAudioConvert *reformat_ctx;
233 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
234 FILE *logfile;
235
236 #if CONFIG_AVFILTER
237 AVFilterContext *output_video_filter;
238 AVFilterContext *input_video_filter;
239 AVFilterBufferRef *picref;
240 char *avfilter;
241 AVFilterGraph *graph;
242 #endif
243
244 int64_t sws_flags;
245 AVDictionary *opts;
246 int is_past_recording_time;
247 int stream_copy;
248 const char *attachment_filename;
249 int copy_initial_nonkeyframes;
250 } OutputStream;
251
252
253 typedef struct OutputFile {
254 AVFormatContext *ctx;
255 AVDictionary *opts;
256 int ost_index; /* index of the first stream in output_streams */
257 int64_t recording_time; /* desired length of the resulting file in microseconds */
258 int64_t start_time; /* start time in microseconds */
259 uint64_t limit_filesize;
260 } OutputFile;
261
262 static InputStream *input_streams = NULL;
263 static int nb_input_streams = 0;
264 static InputFile *input_files = NULL;
265 static int nb_input_files = 0;
266
267 static OutputStream *output_streams = NULL;
268 static int nb_output_streams = 0;
269 static OutputFile *output_files = NULL;
270 static int nb_output_files = 0;
271
272 typedef struct OptionsContext {
273 /* input/output options */
274 int64_t start_time;
275 const char *format;
276
277 SpecifierOpt *codec_names;
278 int nb_codec_names;
279 SpecifierOpt *audio_channels;
280 int nb_audio_channels;
281 SpecifierOpt *audio_sample_rate;
282 int nb_audio_sample_rate;
283 SpecifierOpt *frame_rates;
284 int nb_frame_rates;
285 SpecifierOpt *frame_sizes;
286 int nb_frame_sizes;
287 SpecifierOpt *frame_pix_fmts;
288 int nb_frame_pix_fmts;
289
290 /* input options */
291 int64_t input_ts_offset;
292 int rate_emu;
293
294 SpecifierOpt *ts_scale;
295 int nb_ts_scale;
296 SpecifierOpt *dump_attachment;
297 int nb_dump_attachment;
298
299 /* output options */
300 StreamMap *stream_maps;
301 int nb_stream_maps;
302 /* first item specifies output metadata, second is input */
303 MetadataMap (*meta_data_maps)[2];
304 int nb_meta_data_maps;
305 int metadata_global_manual;
306 int metadata_streams_manual;
307 int metadata_chapters_manual;
308 const char **attachments;
309 int nb_attachments;
310
311 int chapters_input_file;
312
313 int64_t recording_time;
314 uint64_t limit_filesize;
315 float mux_preload;
316 float mux_max_delay;
317
318 int video_disable;
319 int audio_disable;
320 int subtitle_disable;
321 int data_disable;
322
323 /* indexed by output file stream index */
324 int *streamid_map;
325 int nb_streamid_map;
326
327 SpecifierOpt *metadata;
328 int nb_metadata;
329 SpecifierOpt *max_frames;
330 int nb_max_frames;
331 SpecifierOpt *bitstream_filters;
332 int nb_bitstream_filters;
333 SpecifierOpt *codec_tags;
334 int nb_codec_tags;
335 SpecifierOpt *sample_fmts;
336 int nb_sample_fmts;
337 SpecifierOpt *qscale;
338 int nb_qscale;
339 SpecifierOpt *forced_key_frames;
340 int nb_forced_key_frames;
341 SpecifierOpt *force_fps;
342 int nb_force_fps;
343 SpecifierOpt *frame_aspect_ratios;
344 int nb_frame_aspect_ratios;
345 SpecifierOpt *rc_overrides;
346 int nb_rc_overrides;
347 SpecifierOpt *intra_matrices;
348 int nb_intra_matrices;
349 SpecifierOpt *inter_matrices;
350 int nb_inter_matrices;
351 SpecifierOpt *top_field_first;
352 int nb_top_field_first;
353 SpecifierOpt *metadata_map;
354 int nb_metadata_map;
355 SpecifierOpt *presets;
356 int nb_presets;
357 SpecifierOpt *copy_initial_nonkeyframes;
358 int nb_copy_initial_nonkeyframes;
359 #if CONFIG_AVFILTER
360 SpecifierOpt *filters;
361 int nb_filters;
362 #endif
363 } OptionsContext;
364
365 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
366 {\
367 int i, ret;\
368 for (i = 0; i < o->nb_ ## name; i++) {\
369 char *spec = o->name[i].specifier;\
370 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
371 outvar = o->name[i].u.type;\
372 else if (ret < 0)\
373 exit_program(1);\
374 }\
375 }
376
377 static void reset_options(OptionsContext *o)
378 {
379 const OptionDef *po = options;
380
381 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
382 while (po->name) {
383 void *dst = (uint8_t*)o + po->u.off;
384
385 if (po->flags & OPT_SPEC) {
386 SpecifierOpt **so = dst;
387 int i, *count = (int*)(so + 1);
388 for (i = 0; i < *count; i++) {
389 av_freep(&(*so)[i].specifier);
390 if (po->flags & OPT_STRING)
391 av_freep(&(*so)[i].u.str);
392 }
393 av_freep(so);
394 *count = 0;
395 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
396 av_freep(dst);
397 po++;
398 }
399
400 av_freep(&o->stream_maps);
401 av_freep(&o->meta_data_maps);
402 av_freep(&o->streamid_map);
403
404 memset(o, 0, sizeof(*o));
405
406 o->mux_max_delay = 0.7;
407 o->recording_time = INT64_MAX;
408 o->limit_filesize = UINT64_MAX;
409 o->chapters_input_file = INT_MAX;
410
411 uninit_opts();
412 init_opts();
413 }
414
415 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
416 {
417 AVCodecContext *s = ist->st->codec;
418 FrameBuffer *buf = av_mallocz(sizeof(*buf));
419 int ret;
420 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
421 int h_chroma_shift, v_chroma_shift;
422 int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
423 int w = s->width, h = s->height;
424
425 if (!buf)
426 return AVERROR(ENOMEM);
427
428 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
429 w += 2*edge;
430 h += 2*edge;
431 }
432
433 avcodec_align_dimensions(s, &w, &h);
434 if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
435 s->pix_fmt, 32)) < 0) {
436 av_freep(&buf);
437 return ret;
438 }
439 /* XXX this shouldn't be needed, but some tests break without this line
440 * those decoders are buggy and need to be fixed.
441 * the following tests fail:
442 * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
443 */
444 memset(buf->base[0], 128, ret);
445
446 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
447 for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
448 const int h_shift = i==0 ? 0 : h_chroma_shift;
449 const int v_shift = i==0 ? 0 : v_chroma_shift;
450 if (s->flags & CODEC_FLAG_EMU_EDGE)
451 buf->data[i] = buf->base[i];
452 else
453 buf->data[i] = buf->base[i] +
454 FFALIGN((buf->linesize[i]*edge >> v_shift) +
455 (pixel_size*edge >> h_shift), 32);
456 }
457 buf->w = s->width;
458 buf->h = s->height;
459 buf->pix_fmt = s->pix_fmt;
460 buf->ist = ist;
461
462 *pbuf = buf;
463 return 0;
464 }
465
466 static void free_buffer_pool(InputStream *ist)
467 {
468 FrameBuffer *buf = ist->buffer_pool;
469 while (buf) {
470 ist->buffer_pool = buf->next;
471 av_freep(&buf->base[0]);
472 av_free(buf);
473 buf = ist->buffer_pool;
474 }
475 }
476
477 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
478 {
479 av_assert0(buf->refcount);
480 buf->refcount--;
481 if (!buf->refcount) {
482 buf->next = ist->buffer_pool;
483 ist->buffer_pool = buf;
484 }
485 }
486
487 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
488 {
489 InputStream *ist = s->opaque;
490 FrameBuffer *buf;
491 int ret, i;
492
493 if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
494 return ret;
495
496 buf = ist->buffer_pool;
497 ist->buffer_pool = buf->next;
498 buf->next = NULL;
499 if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
500 av_freep(&buf->base[0]);
501 av_free(buf);
502 if ((ret = alloc_buffer(ist, &buf)) < 0)
503 return ret;
504 }
505 buf->refcount++;
506
507 frame->opaque = buf;
508 frame->type = FF_BUFFER_TYPE_USER;
509 frame->extended_data = frame->data;
510 frame->pkt_pts = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
511
512 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
513 frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
514 frame->data[i] = buf->data[i];
515 frame->linesize[i] = buf->linesize[i];
516 }
517
518 return 0;
519 }
520
521 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
522 {
523 InputStream *ist = s->opaque;
524 FrameBuffer *buf = frame->opaque;
525 int i;
526
527 for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
528 frame->data[i] = NULL;
529
530 unref_buffer(ist, buf);
531 }
532
533 static void filter_release_buffer(AVFilterBuffer *fb)
534 {
535 FrameBuffer *buf = fb->priv;
536 av_free(fb);
537 unref_buffer(buf->ist, buf);
538 }
539
540 #if CONFIG_AVFILTER
541
542 static int configure_video_filters(InputStream *ist, OutputStream *ost)
543 {
544 AVFilterContext *last_filter, *filter;
545 /** filter graph containing all filters including input & output */
546 AVCodecContext *codec = ost->st->codec;
547 AVCodecContext *icodec = ist->st->codec;
548 FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
549 AVRational sample_aspect_ratio;
550 char args[255];
551 int ret;
552
553 ost->graph = avfilter_graph_alloc();
554
555 if (ist->st->sample_aspect_ratio.num) {
556 sample_aspect_ratio = ist->st->sample_aspect_ratio;
557 } else
558 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
559
560 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
561 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
562 sample_aspect_ratio.num, sample_aspect_ratio.den);
563
564 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
565 "src", args, NULL, ost->graph);
566 if (ret < 0)
567 return ret;
568 ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
569 "out", NULL, &ffsink_ctx, ost->graph);
570 if (ret < 0)
571 return ret;
572 last_filter = ost->input_video_filter;
573
574 if (codec->width != icodec->width || codec->height != icodec->height) {
575 snprintf(args, 255, "%d:%d:flags=0x%X",
576 codec->width,
577 codec->height,
578 (unsigned)ost->sws_flags);
579 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
580 NULL, args, NULL, ost->graph)) < 0)
581 return ret;
582 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
583 return ret;
584 last_filter = filter;
585 }
586
587 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
588 ost->graph->scale_sws_opts = av_strdup(args);
589
590 if (ost->avfilter) {
591 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
592 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
593
594 outputs->name = av_strdup("in");
595 outputs->filter_ctx = last_filter;
596 outputs->pad_idx = 0;
597 outputs->next = NULL;
598
599 inputs->name = av_strdup("out");
600 inputs->filter_ctx = ost->output_video_filter;
601 inputs->pad_idx = 0;
602 inputs->next = NULL;
603
604 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
605 return ret;
606 av_freep(&ost->avfilter);
607 } else {
608 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
609 return ret;
610 }
611
612 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
613 return ret;
614
615 codec->width = ost->output_video_filter->inputs[0]->w;
616 codec->height = ost->output_video_filter->inputs[0]->h;
617 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
618 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
619 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
620 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
621
622 return 0;
623 }
624 #endif /* CONFIG_AVFILTER */
625
626 static void term_exit(void)
627 {
628 av_log(NULL, AV_LOG_QUIET, "");
629 }
630
631 static volatile int received_sigterm = 0;
632 static volatile int received_nb_signals = 0;
633
634 static void
635 sigterm_handler(int sig)
636 {
637 received_sigterm = sig;
638 received_nb_signals++;
639 term_exit();
640 }
641
642 static void term_init(void)
643 {
644 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
645 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
646 #ifdef SIGXCPU
647 signal(SIGXCPU, sigterm_handler);
648 #endif
649 }
650
651 static int decode_interrupt_cb(void *ctx)
652 {
653 return received_nb_signals > 1;
654 }
655
656 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
657
658 void exit_program(int ret)
659 {
660 int i;
661
662 /* close files */
663 for (i = 0; i < nb_output_files; i++) {
664 AVFormatContext *s = output_files[i].ctx;
665 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
666 avio_close(s->pb);
667 avformat_free_context(s);
668 av_dict_free(&output_files[i].opts);
669 }
670 for (i = 0; i < nb_output_streams; i++) {
671 AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
672 while (bsfc) {
673 AVBitStreamFilterContext *next = bsfc->next;
674 av_bitstream_filter_close(bsfc);
675 bsfc = next;
676 }
677 output_streams[i].bitstream_filters = NULL;
678 }
679 for (i = 0; i < nb_input_files; i++) {
680 avformat_close_input(&input_files[i].ctx);
681 }
682 for (i = 0; i < nb_input_streams; i++) {
683 av_freep(&input_streams[i].decoded_frame);
684 av_freep(&input_streams[i].filtered_frame);
685 av_dict_free(&input_streams[i].opts);
686 free_buffer_pool(&input_streams[i]);
687 }
688
689 if (vstats_file)
690 fclose(vstats_file);
691 av_free(vstats_filename);
692
693 av_freep(&input_streams);
694 av_freep(&input_files);
695 av_freep(&output_streams);
696 av_freep(&output_files);
697
698 uninit_opts();
699 av_free(audio_buf);
700 av_free(audio_out);
701 allocated_audio_buf_size = allocated_audio_out_size = 0;
702
703 #if CONFIG_AVFILTER
704 avfilter_uninit();
705 #endif
706 avformat_network_deinit();
707
708 if (received_sigterm) {
709 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
710 (int) received_sigterm);
711 exit (255);
712 }
713
714 exit(ret);
715 }
716
717 static void assert_avoptions(AVDictionary *m)
718 {
719 AVDictionaryEntry *t;
720 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
721 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
722 exit_program(1);
723 }
724 }
725
726 static void assert_codec_experimental(AVCodecContext *c, int encoder)
727 {
728 const char *codec_string = encoder ? "encoder" : "decoder";
729 AVCodec *codec;
730 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
731 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
732 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
733 "results.\nAdd '-strict experimental' if you want to use it.\n",
734 codec_string, c->codec->name);
735 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
736 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
737 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
738 codec_string, codec->name);
739 exit_program(1);
740 }
741 }
742
743 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
744 {
745 if (codec && codec->sample_fmts) {
746 const enum AVSampleFormat *p = codec->sample_fmts;
747 for (; *p != -1; p++) {
748 if (*p == st->codec->sample_fmt)
749 break;
750 }
751 if (*p == -1) {
752 av_log(NULL, AV_LOG_WARNING,
753 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
754 av_get_sample_fmt_name(st->codec->sample_fmt),
755 codec->name,
756 av_get_sample_fmt_name(codec->sample_fmts[0]));
757 st->codec->sample_fmt = codec->sample_fmts[0];
758 }
759 }
760 }
761
762 /**
763 * Update the requested input sample format based on the output sample format.
764 * This is currently only used to request float output from decoders which
765 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
766 * Ideally this will be removed in the future when decoders do not do format
767 * conversion and only output in their native format.
768 */
769 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
770 AVCodecContext *enc)
771 {
772 /* if sample formats match or a decoder sample format has already been
773 requested, just return */
774 if (enc->sample_fmt == dec->sample_fmt ||
775 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
776 return;
777
778 /* if decoder supports more than one output format */
779 if (dec_codec && dec_codec->sample_fmts &&
780 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
781 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
782 const enum AVSampleFormat *p;
783 int min_dec = -1, min_inc = -1;
784
785 /* find a matching sample format in the encoder */
786 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
787 if (*p == enc->sample_fmt) {
788 dec->request_sample_fmt = *p;
789 return;
790 } else if (*p > enc->sample_fmt) {
791 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
792 } else
793 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
794 }
795
796 /* if none match, provide the one that matches quality closest */
797 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
798 enc->sample_fmt - min_dec;
799 }
800 }
801
802 static void choose_sample_rate(AVStream *st, AVCodec *codec)
803 {
804 if (codec && codec->supported_samplerates) {
805 const int *p = codec->supported_samplerates;
806 int best = 0;
807 int best_dist = INT_MAX;
808 for (; *p; p++) {
809 int dist = abs(st->codec->sample_rate - *p);
810 if (dist < best_dist) {
811 best_dist = dist;
812 best = *p;
813 }
814 }
815 if (best_dist) {
816 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
817 }
818 st->codec->sample_rate = best;
819 }
820 }
821
822 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
823 {
824 if (codec && codec->pix_fmts) {
825 const enum PixelFormat *p = codec->pix_fmts;
826 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
827 if (st->codec->codec_id == CODEC_ID_MJPEG) {
828 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
829 } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
830 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
831 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
832 }
833 }
834 for (; *p != PIX_FMT_NONE; p++) {
835 if (*p == st->codec->pix_fmt)
836 break;
837 }
838 if (*p == PIX_FMT_NONE) {
839 if (st->codec->pix_fmt != PIX_FMT_NONE)
840 av_log(NULL, AV_LOG_WARNING,
841 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
842 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
843 codec->name,
844 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
845 st->codec->pix_fmt = codec->pix_fmts[0];
846 }
847 }
848 }
849
850 static double
851 get_sync_ipts(const OutputStream *ost)
852 {
853 const InputStream *ist = ost->sync_ist;
854 OutputFile *of = &output_files[ost->file_index];
855 return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
856 }
857
858 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
859 {
860 int ret;
861
862 while (bsfc) {
863 AVPacket new_pkt = *pkt;
864 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
865 &new_pkt.data, &new_pkt.size,
866 pkt->data, pkt->size,
867 pkt->flags & AV_PKT_FLAG_KEY);
868 if (a > 0) {
869 av_free_packet(pkt);
870 new_pkt.destruct = av_destruct_packet;
871 } else if (a < 0) {
872 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
873 bsfc->filter->name, pkt->stream_index,
874 avctx->codec ? avctx->codec->name : "copy");
875 print_error("", a);
876 if (exit_on_error)
877 exit_program(1);
878 }
879 *pkt = new_pkt;
880
881 bsfc = bsfc->next;
882 }
883
884 ret = av_interleaved_write_frame(s, pkt);
885 if (ret < 0) {
886 print_error("av_interleaved_write_frame()", ret);
887 exit_program(1);
888 }
889 }
890
891 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
892 {
893 int fill_char = 0x00;
894 if (sample_fmt == AV_SAMPLE_FMT_U8)
895 fill_char = 0x80;
896 memset(buf, fill_char, size);
897 }
898
899 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
900 InputStream *ist, AVFrame *decoded_frame)
901 {
902 uint8_t *buftmp;
903 int64_t audio_out_size, audio_buf_size;
904
905 int size_out, frame_bytes, ret, resample_changed;
906 AVCodecContext *enc = ost->st->codec;
907 AVCodecContext *dec = ist->st->codec;
908 int osize = av_get_bytes_per_sample(enc->sample_fmt);
909 int isize = av_get_bytes_per_sample(dec->sample_fmt);
910 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
911 uint8_t *buf = decoded_frame->data[0];
912 int size = decoded_frame->nb_samples * dec->channels * isize;
913 int64_t allocated_for_size = size;
914
915 need_realloc:
916 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
917 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
918 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
919 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
920 audio_buf_size *= osize * enc->channels;
921
922 audio_out_size = FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
923 if (coded_bps > 8 * osize)
924 audio_out_size = audio_out_size * coded_bps / (8*osize);
925 audio_out_size += FF_MIN_BUFFER_SIZE;
926
927 if (audio_out_size > INT_MAX || audio_buf_size > INT_MAX) {
928 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
929 exit_program(1);
930 }
931
932 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
933 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
934 if (!audio_buf || !audio_out) {
935 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
936 exit_program(1);
937 }
938
939 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
940 ost->audio_resample = 1;
941
942 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
943 ost->resample_channels != dec->channels ||
944 ost->resample_sample_rate != dec->sample_rate;
945
946 if ((ost->audio_resample && !ost->resample) || resample_changed) {
947 if (resample_changed) {
948 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",
949 ist->file_index, ist->st->index,
950 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
951 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
952 ost->resample_sample_fmt = dec->sample_fmt;
953 ost->resample_channels = dec->channels;
954 ost->resample_sample_rate = dec->sample_rate;
955 if (ost->resample)
956 audio_resample_close(ost->resample);
957 }
958 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
959 if (audio_sync_method <= 1 &&
960 ost->resample_sample_fmt == enc->sample_fmt &&
961 ost->resample_channels == enc->channels &&
962 ost->resample_sample_rate == enc->sample_rate) {
963 ost->resample = NULL;
964 ost->audio_resample = 0;
965 } else if (ost->audio_resample) {
966 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
967 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
968 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
969 enc->sample_rate, dec->sample_rate,
970 enc->sample_fmt, dec->sample_fmt,
971 16, 10, 0, 0.8);
972 if (!ost->resample) {
973 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
974 dec->channels, dec->sample_rate,
975 enc->channels, enc->sample_rate);
976 exit_program(1);
977 }
978 }
979 }
980
981 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
982 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
983 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
984 if (ost->reformat_ctx)
985 av_audio_convert_free(ost->reformat_ctx);
986 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
987 dec->sample_fmt, 1, NULL, 0);
988 if (!ost->reformat_ctx) {
989 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
990 av_get_sample_fmt_name(dec->sample_fmt),
991 av_get_sample_fmt_name(enc->sample_fmt));
992 exit_program(1);
993 }
994 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
995 }
996
997 if (audio_sync_method) {
998 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
999 av_fifo_size(ost->fifo) / (enc->channels * osize);
1000 int idelta = delta * dec->sample_rate / enc->sample_rate;
1001 int byte_delta = idelta * isize * dec->channels;
1002
1003 // FIXME resample delay
1004 if (fabs(delta) > 50) {
1005 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1006 if (byte_delta < 0) {
1007 byte_delta = FFMAX(byte_delta, -size);
1008 size += byte_delta;
1009 buf -= byte_delta;
1010 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1011 -byte_delta / (isize * dec->channels));
1012 if (!size)
1013 return;
1014 ist->is_start = 0;
1015 } else {
1016 static uint8_t *input_tmp = NULL;
1017 input_tmp = av_realloc(input_tmp, byte_delta + size);
1018
1019 if (byte_delta > allocated_for_size - size) {
1020 allocated_for_size = byte_delta + (int64_t)size;
1021 goto need_realloc;
1022 }
1023 ist->is_start = 0;
1024
1025 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1026 memcpy(input_tmp + byte_delta, buf, size);
1027 buf = input_tmp;
1028 size += byte_delta;
1029 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1030 }
1031 } else if (audio_sync_method > 1) {
1032 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1033 av_assert0(ost->audio_resample);
1034 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1035 delta, comp, enc->sample_rate);
1036 // 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));
1037 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1038 }
1039 }
1040 } else
1041 ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1042 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1043
1044 if (ost->audio_resample) {
1045 buftmp = audio_buf;
1046 size_out = audio_resample(ost->resample,
1047 (short *)buftmp, (short *)buf,
1048 size / (dec->channels * isize));
1049 size_out = size_out * enc->channels * osize;
1050 } else {
1051 buftmp = buf;
1052 size_out = size;
1053 }
1054
1055 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1056 const void *ibuf[6] = { buftmp };
1057 void *obuf[6] = { audio_buf };
1058 int istride[6] = { isize };
1059 int ostride[6] = { osize };
1060 int len = size_out / istride[0];
1061 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1062 printf("av_audio_convert() failed\n");
1063 if (exit_on_error)
1064 exit_program(1);
1065 return;
1066 }
1067 buftmp = audio_buf;
1068 size_out = len * osize;
1069 }
1070
1071 /* now encode as many frames as possible */
1072 if (enc->frame_size > 1) {
1073 /* output resampled raw samples */
1074 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1075 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1076 exit_program(1);
1077 }
1078 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1079
1080 frame_bytes = enc->frame_size * osize * enc->channels;
1081
1082 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1083 AVPacket pkt;
1084 av_init_packet(&pkt);
1085
1086 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1087
1088 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1089
1090 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1091 (short *)audio_buf);
1092 if (ret < 0) {
1093 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1094 exit_program(1);
1095 }
1096 audio_size += ret;
1097 pkt.stream_index = ost->index;
1098 pkt.data = audio_out;
1099 pkt.size = ret;
1100 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1101 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1102 pkt.flags |= AV_PKT_FLAG_KEY;
1103 write_frame(s, &pkt, enc, ost->bitstream_filters);
1104
1105 ost->sync_opts += enc->frame_size;
1106 }
1107 } else {
1108 AVPacket pkt;
1109 av_init_packet(&pkt);
1110
1111 ost->sync_opts += size_out / (osize * enc->channels);
1112
1113 /* output a pcm frame */
1114 /* determine the size of the coded buffer */
1115 size_out /= osize;
1116 if (coded_bps)
1117 size_out = size_out * coded_bps / 8;
1118
1119 if (size_out > audio_out_size) {
1120 av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1121 exit_program(1);
1122 }
1123
1124 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1125 ret = avcodec_encode_audio(enc, audio_out, size_out,
1126 (short *)buftmp);
1127 if (ret < 0) {
1128 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1129 exit_program(1);
1130 }
1131 audio_size += ret;
1132 pkt.stream_index = ost->index;
1133 pkt.data = audio_out;
1134 pkt.size = ret;
1135 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1136 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1137 pkt.flags |= AV_PKT_FLAG_KEY;
1138 write_frame(s, &pkt, enc, ost->bitstream_filters);
1139 }
1140 }
1141
1142 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1143 {
1144 AVCodecContext *dec;
1145 AVPicture *picture2;
1146 AVPicture picture_tmp;
1147 uint8_t *buf = 0;
1148
1149 dec = ist->st->codec;
1150
1151 /* deinterlace : must be done before any resize */
1152 if (do_deinterlace) {
1153 int size;
1154
1155 /* create temporary picture */
1156 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1157 buf = av_malloc(size);
1158 if (!buf)
1159 return;
1160
1161 picture2 = &picture_tmp;
1162 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1163
1164 if (avpicture_deinterlace(picture2, picture,
1165 dec->pix_fmt, dec->width, dec->height) < 0) {
1166 /* if error, do not deinterlace */
1167 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1168 av_free(buf);
1169 buf = NULL;
1170 picture2 = picture;
1171 }
1172 } else {
1173 picture2 = picture;
1174 }
1175
1176 if (picture != picture2)
1177 *picture = *picture2;
1178 *bufp = buf;
1179 }
1180
1181 static void do_subtitle_out(AVFormatContext *s,
1182 OutputStream *ost,
1183 InputStream *ist,
1184 AVSubtitle *sub,
1185 int64_t pts)
1186 {
1187 static uint8_t *subtitle_out = NULL;
1188 int subtitle_out_max_size = 1024 * 1024;
1189 int subtitle_out_size, nb, i;
1190 AVCodecContext *enc;
1191 AVPacket pkt;
1192
1193 if (pts == AV_NOPTS_VALUE) {
1194 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1195 if (exit_on_error)
1196 exit_program(1);
1197 return;
1198 }
1199
1200 enc = ost->st->codec;
1201
1202 if (!subtitle_out) {
1203 subtitle_out = av_malloc(subtitle_out_max_size);
1204 }
1205
1206 /* Note: DVB subtitle need one packet to draw them and one other
1207 packet to clear them */
1208 /* XXX: signal it in the codec context ? */
1209 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1210 nb = 2;
1211 else
1212 nb = 1;
1213
1214 for (i = 0; i < nb; i++) {
1215 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1216 // start_display_time is required to be 0
1217 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1218 sub->end_display_time -= sub->start_display_time;
1219 sub->start_display_time = 0;
1220 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1221 subtitle_out_max_size, sub);
1222 if (subtitle_out_size < 0) {
1223 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1224 exit_program(1);
1225 }
1226
1227 av_init_packet(&pkt);
1228 pkt.stream_index = ost->index;
1229 pkt.data = subtitle_out;
1230 pkt.size = subtitle_out_size;
1231 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1232 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1233 /* XXX: the pts correction is handled here. Maybe handling
1234 it in the codec would be better */
1235 if (i == 0)
1236 pkt.pts += 90 * sub->start_display_time;
1237 else
1238 pkt.pts += 90 * sub->end_display_time;
1239 }
1240 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1241 }
1242 }
1243
1244 static int bit_buffer_size = 1024 * 256;
1245 static uint8_t *bit_buffer = NULL;
1246
1247 static void do_video_resample(OutputStream *ost,
1248 InputStream *ist,
1249 AVFrame *in_picture,
1250 AVFrame **out_picture)
1251 {
1252 int resample_changed = 0;
1253 AVCodecContext *dec = ist->st->codec;
1254 *out_picture = in_picture;
1255
1256 resample_changed = ost->resample_width != dec->width ||
1257 ost->resample_height != dec->height ||
1258 ost->resample_pix_fmt != dec->pix_fmt;
1259
1260 if (resample_changed) {
1261 av_log(NULL, AV_LOG_INFO,
1262 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1263 ist->file_index, ist->st->index,
1264 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1265 dec->width , dec->height , av_get_pix_fmt_name(dec->pix_fmt));
1266 if (!ost->video_resample)
1267 ost->video_resample = 1;
1268 }
1269
1270 #if !CONFIG_AVFILTER
1271 if (ost->video_resample) {
1272 *out_picture = &ost->pict_tmp;
1273 if (resample_changed) {
1274 /* initialize a new scaler context */
1275 sws_freeContext(ost->img_resample_ctx);
1276 ost->img_resample_ctx = sws_getContext(
1277 ist->st->codec->width,
1278 ist->st->codec->height,
1279 ist->st->codec->pix_fmt,
1280 ost->st->codec->width,
1281 ost->st->codec->height,
1282 ost->st->codec->pix_fmt,
1283 ost->sws_flags, NULL, NULL, NULL);
1284 if (ost->img_resample_ctx == NULL) {
1285 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1286 exit_program(1);
1287 }
1288 }
1289 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1290 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1291 }
1292 #else
1293 if (resample_changed) {
1294 avfilter_graph_free(&ost->graph);
1295 if (configure_video_filters(ist, ost)) {
1296 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1297 exit_program(1);
1298 }
1299 }
1300 #endif
1301 if (resample_changed) {
1302 ost->resample_width = dec->width;
1303 ost->resample_height = dec->height;
1304 ost->resample_pix_fmt = dec->pix_fmt;
1305 }
1306 }
1307
1308
1309 static void do_video_out(AVFormatContext *s,
1310 OutputStream *ost,
1311 InputStream *ist,
1312 AVFrame *in_picture,
1313 int *frame_size, float quality)
1314 {
1315 int nb_frames, i, ret, format_video_sync;
1316 AVFrame *final_picture;
1317 AVCodecContext *enc;
1318 double sync_ipts;
1319
1320 enc = ost->st->codec;
1321
1322 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1323
1324 /* by default, we output a single frame */
1325 nb_frames = 1;
1326
1327 *frame_size = 0;
1328
1329 format_video_sync = video_sync_method;
1330 if (format_video_sync < 0)
1331 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1332 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1333
1334 if (format_video_sync) {
1335 double vdelta = sync_ipts - ost->sync_opts;
1336 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1337 if (vdelta < -1.1)
1338 nb_frames = 0;
1339 else if (format_video_sync == 2) {
1340 if (vdelta <= -0.6) {
1341 nb_frames = 0;
1342 } else if (vdelta > 0.6)
1343 ost->sync_opts = lrintf(sync_ipts);
1344 } else if (vdelta > 1.1)
1345 nb_frames = lrintf(vdelta);
1346 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1347 if (nb_frames == 0) {
1348 ++nb_frames_drop;
1349 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1350 } else if (nb_frames > 1) {
1351 nb_frames_dup += nb_frames - 1;
1352 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1353 }
1354 } else
1355 ost->sync_opts = lrintf(sync_ipts);
1356
1357 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1358 if (nb_frames <= 0)
1359 return;
1360
1361 do_video_resample(ost, ist, in_picture, &final_picture);
1362
1363 /* duplicates frame if needed */
1364 for (i = 0; i < nb_frames; i++) {
1365 AVPacket pkt;
1366 av_init_packet(&pkt);
1367 pkt.stream_index = ost->index;
1368
1369 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1370 enc->codec->id == CODEC_ID_RAWVIDEO) {
1371 /* raw pictures are written as AVPicture structure to
1372 avoid any copies. We support temporarily the older
1373 method. */
1374 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1375 enc->coded_frame->top_field_first = in_picture->top_field_first;
1376 pkt.data = (uint8_t *)final_picture;
1377 pkt.size = sizeof(AVPicture);
1378 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1379 pkt.flags |= AV_PKT_FLAG_KEY;
1380
1381 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1382 } else {
1383 AVFrame big_picture;
1384
1385 big_picture = *final_picture;
1386 /* better than nothing: use input picture interlaced
1387 settings */
1388 big_picture.interlaced_frame = in_picture->interlaced_frame;
1389 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1390 if (ost->top_field_first == -1)
1391 big_picture.top_field_first = in_picture->top_field_first;
1392 else
1393 big_picture.top_field_first = !!ost->top_field_first;
1394 }
1395
1396 /* handles same_quant here. This is not correct because it may
1397 not be a global option */
1398 big_picture.quality = quality;
1399 if (!enc->me_threshold)
1400 big_picture.pict_type = 0;
1401 // big_picture.pts = AV_NOPTS_VALUE;
1402 big_picture.pts = ost->sync_opts;
1403 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1404 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1405 if (ost->forced_kf_index < ost->forced_kf_count &&
1406 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1407 big_picture.pict_type = AV_PICTURE_TYPE_I;
1408 ost->forced_kf_index++;
1409 }
1410 ret = avcodec_encode_video(enc,
1411 bit_buffer, bit_buffer_size,
1412 &big_picture);
1413 if (ret < 0) {
1414 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1415 exit_program(1);
1416 }
1417
1418 if (ret > 0) {
1419 pkt.data = bit_buffer;
1420 pkt.size = ret;
1421 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1422 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1423 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1424 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1425 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1426
1427 if (enc->coded_frame->key_frame)
1428 pkt.flags |= AV_PKT_FLAG_KEY;
1429 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1430 *frame_size = ret;
1431 video_size += ret;
1432 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1433 // enc->frame_number-1, ret, enc->pict_type);
1434 /* if two pass, output log */
1435 if (ost->logfile && enc->stats_out) {
1436 fprintf(ost->logfile, "%s", enc->stats_out);
1437 }
1438 }
1439 }
1440 ost->sync_opts++;
1441 ost->frame_number++;
1442 }
1443 }
1444
1445 static double psnr(double d)
1446 {
1447 return -10.0 * log(d) / log(10.0);
1448 }
1449
1450 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1451 int frame_size)
1452 {
1453 AVCodecContext *enc;
1454 int frame_number;
1455 double ti1, bitrate, avg_bitrate;
1456
1457 /* this is executed just the first time do_video_stats is called */
1458 if (!vstats_file) {
1459 vstats_file = fopen(vstats_filename, "w");
1460 if (!vstats_file) {
1461 perror("fopen");
1462 exit_program(1);
1463 }
1464 }
1465
1466 enc = ost->st->codec;
1467 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1468 frame_number = ost->frame_number;
1469 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1470 if (enc->flags&CODEC_FLAG_PSNR)
1471 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1472
1473 fprintf(vstats_file,"f_size= %6d ", frame_size);
1474 /* compute pts value */
1475 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1476 if (ti1 < 0.01)
1477 ti1 = 0.01;
1478
1479 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1480 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1481 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1482 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1483 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1484 }
1485 }
1486
1487 static void print_report(OutputFile *output_files,
1488 OutputStream *ost_table, int nb_ostreams,
1489 int is_last_report, int64_t timer_start)
1490 {
1491 char buf[1024];
1492 OutputStream *ost;
1493 AVFormatContext *oc;
1494 int64_t total_size;
1495 AVCodecContext *enc;
1496 int frame_number, vid, i;
1497 double bitrate, ti1, pts;
1498 static int64_t last_time = -1;
1499 static int qp_histogram[52];
1500
1501 if (!print_stats && !is_last_report)
1502 return;
1503
1504 if (!is_last_report) {
1505 int64_t cur_time;
1506 /* display the report every 0.5 seconds */
1507 cur_time = av_gettime();
1508 if (last_time == -1) {
1509 last_time = cur_time;
1510 return;
1511 }
1512 if ((cur_time - last_time) < 500000)
1513 return;
1514 last_time = cur_time;
1515 }
1516
1517
1518 oc = output_files[0].ctx;
1519
1520 total_size = avio_size(oc->pb);
1521 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1522 total_size = avio_tell(oc->pb);
1523
1524 buf[0] = '\0';
1525 ti1 = 1e10;
1526 vid = 0;
1527 for (i = 0; i < nb_ostreams; i++) {
1528 float q = -1;
1529 ost = &ost_table[i];
1530 enc = ost->st->codec;
1531 if (!ost->stream_copy && enc->coded_frame)
1532 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1533 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1534 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1535 }
1536 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1537 float t = (av_gettime() - timer_start) / 1000000.0;
1538
1539 frame_number = ost->frame_number;
1540 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1541 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1542 if (is_last_report)
1543 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1544 if (qp_hist) {
1545 int j;
1546 int qp = lrintf(q);
1547 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1548 qp_histogram[qp]++;
1549 for (j = 0; j < 32; j++)
1550 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1551 }
1552 if (enc->flags&CODEC_FLAG_PSNR) {
1553 int j;
1554 double error, error_sum = 0;
1555 double scale, scale_sum = 0;
1556 char type[3] = { 'Y','U','V' };
1557 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1558 for (j = 0; j < 3; j++) {
1559 if (is_last_report) {
1560 error = enc->error[j];
1561 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1562 } else {
1563 error = enc->coded_frame->error[j];
1564 scale = enc->width * enc->height * 255.0 * 255.0;
1565 }
1566 if (j)
1567 scale /= 4;
1568 error_sum += error;
1569 scale_sum += scale;
1570 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1571 }
1572 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1573 }
1574 vid = 1;
1575 }
1576 /* compute min output value */
1577 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1578 if ((pts < ti1) && (pts > 0))
1579 ti1 = pts;
1580 }
1581 if (ti1 < 0.01)
1582 ti1 = 0.01;
1583
1584 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1585
1586 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1587 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1588 (double)total_size / 1024, ti1, bitrate);
1589
1590 if (nb_frames_dup || nb_frames_drop)
1591 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1592 nb_frames_dup, nb_frames_drop);
1593
1594 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1595
1596 fflush(stderr);
1597
1598 if (is_last_report) {
1599 int64_t raw= audio_size + video_size + extra_size;
1600 av_log(NULL, AV_LOG_INFO, "\n");
1601 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1602 video_size / 1024.0,
1603 audio_size / 1024.0,
1604 extra_size / 1024.0,
1605 100.0 * (total_size - raw) / raw
1606 );
1607 }
1608 }
1609
1610 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1611 {
1612 int i, ret;
1613
1614 for (i = 0; i < nb_ostreams; i++) {
1615 OutputStream *ost = &ost_table[i];
1616 AVCodecContext *enc = ost->st->codec;
1617 AVFormatContext *os = output_files[ost->file_index].ctx;
1618
1619 if (!ost->encoding_needed)
1620 continue;
1621
1622 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1623 continue;
1624 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1625 continue;
1626
1627 for (;;) {
1628 AVPacket pkt;
1629 int fifo_bytes;
1630 av_init_packet(&pkt);
1631 pkt.stream_index = ost->index;
1632
1633 switch (ost->st->codec->codec_type) {
1634 case AVMEDIA_TYPE_AUDIO:
1635 fifo_bytes = av_fifo_size(ost->fifo);
1636 ret = 0;
1637 /* encode any samples remaining in fifo */
1638 if (fifo_bytes > 0) {
1639 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1640 int fs_tmp = enc->frame_size;
1641
1642 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1643 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1644 enc->frame_size = fifo_bytes / (osize * enc->channels);
1645 } else { /* pad */
1646 int frame_bytes = enc->frame_size*osize*enc->channels;
1647 if (allocated_audio_buf_size < frame_bytes)
1648 exit_program(1);
1649 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1650 }
1651
1652 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1653 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1654 ost->st->time_base.num, enc->sample_rate);
1655 enc->frame_size = fs_tmp;
1656 }
1657 if (ret <= 0) {
1658 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1659 }
1660 if (ret < 0) {
1661 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1662 exit_program(1);
1663 }
1664 audio_size += ret;
1665 pkt.flags |= AV_PKT_FLAG_KEY;
1666 break;
1667 case AVMEDIA_TYPE_VIDEO:
1668 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1669 if (ret < 0) {
1670 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1671 exit_program(1);
1672 }
1673 video_size += ret;
1674 if (enc->coded_frame && enc->coded_frame->key_frame)
1675 pkt.flags |= AV_PKT_FLAG_KEY;
1676 if (ost->logfile && enc->stats_out) {
1677 fprintf(ost->logfile, "%s", enc->stats_out);
1678 }
1679 break;
1680 default:
1681 ret = -1;
1682 }
1683
1684 if (ret <= 0)
1685 break;
1686 pkt.data = bit_buffer;
1687 pkt.size = ret;
1688 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1689 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1690 write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1691 }
1692 }
1693 }
1694
1695 /*
1696 * Check whether a packet from ist should be written into ost at this time
1697 */
1698 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1699 {
1700 OutputFile *of = &output_files[ost->file_index];
1701 int ist_index = ist - input_streams;
1702
1703 if (ost->source_index != ist_index)
1704 return 0;
1705
1706 if (of->start_time && ist->pts < of->start_time)
1707 return 0;
1708
1709 if (of->recording_time != INT64_MAX &&
1710 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1711 (AVRational){ 1, 1000000 }) >= 0) {
1712 ost->is_past_recording_time = 1;
1713 return 0;
1714 }
1715
1716 return 1;
1717 }
1718
1719 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1720 {
1721 OutputFile *of = &output_files[ost->file_index];
1722 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1723 AVPacket opkt;
1724
1725 av_init_packet(&opkt);
1726
1727 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1728 !ost->copy_initial_nonkeyframes)
1729 return;
1730
1731 /* force the input stream PTS */
1732 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1733 audio_size += pkt->size;
1734 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1735 video_size += pkt->size;
1736 ost->sync_opts++;
1737 }
1738
1739 opkt.stream_index = ost->index;
1740 if (pkt->pts != AV_NOPTS_VALUE)
1741 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1742 else
1743 opkt.pts = AV_NOPTS_VALUE;
1744
1745 if (pkt->dts == AV_NOPTS_VALUE)
1746 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1747 else
1748 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1749 opkt.dts -= ost_tb_start_time;
1750
1751 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1752 opkt.flags = pkt->flags;
1753
1754 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1755 if ( ost->st->codec->codec_id != CODEC_ID_H264
1756 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1757 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1758 ) {
1759 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1760 opkt.destruct = av_destruct_packet;
1761 } else {
1762 opkt.data = pkt->data;
1763 opkt.size = pkt->size;
1764 }
1765
1766 write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1767 ost->st->codec->frame_number++;
1768 ost->frame_number++;
1769 av_free_packet(&opkt);
1770 }
1771
1772 static void rate_emu_sleep(InputStream *ist)
1773 {
1774 if (input_files[ist->file_index].rate_emu) {
1775 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1776 int64_t now = av_gettime() - ist->start;
1777 if (pts > now)
1778 usleep(pts - now);
1779 }
1780 }
1781
1782 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1783 {
1784 AVFrame *decoded_frame;
1785 AVCodecContext *avctx = ist->st->codec;
1786 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1787 int i, ret;
1788
1789 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1790 return AVERROR(ENOMEM);
1791 else
1792 avcodec_get_frame_defaults(ist->decoded_frame);
1793 decoded_frame = ist->decoded_frame;
1794
1795 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1796 if (ret < 0) {
1797 return ret;
1798 }
1799
1800 if (!*got_output) {
1801 /* no audio frame */
1802 return ret;
1803 }
1804
1805 /* if the decoder provides a pts, use it instead of the last packet pts.
1806 the decoder could be delaying output by a packet or more. */
1807 if (decoded_frame->pts != AV_NOPTS_VALUE)
1808 ist->next_pts = decoded_frame->pts;
1809
1810 /* increment next_pts to use for the case where the input stream does not
1811 have timestamps or there are multiple frames in the packet */
1812 ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1813 avctx->sample_rate;
1814
1815 // preprocess audio (volume)
1816 if (audio_volume != 256) {
1817 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1818 void *samples = decoded_frame->data[0];
1819 switch (avctx->sample_fmt) {
1820 case AV_SAMPLE_FMT_U8:
1821 {
1822 uint8_t *volp = samples;
1823 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1824 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1825 *volp++ = av_clip_uint8(v);
1826 }
1827 break;
1828 }
1829 case AV_SAMPLE_FMT_S16:
1830 {
1831 int16_t *volp = samples;
1832 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1833 int v = ((*volp) * audio_volume + 128) >> 8;
1834 *volp++ = av_clip_int16(v);
1835 }
1836 break;
1837 }
1838 case AV_SAMPLE_FMT_S32:
1839 {
1840 int32_t *volp = samples;
1841 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1842 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1843 *volp++ = av_clipl_int32(v);
1844 }
1845 break;
1846 }
1847 case AV_SAMPLE_FMT_FLT:
1848 {
1849 float *volp = samples;
1850 float scale = audio_volume / 256.f;
1851 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1852 *volp++ *= scale;
1853 }
1854 break;
1855 }
1856 case AV_SAMPLE_FMT_DBL:
1857 {
1858 double *volp = samples;
1859 double scale = audio_volume / 256.;
1860 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1861 *volp++ *= scale;
1862 }
1863 break;
1864 }
1865 default:
1866 av_log(NULL, AV_LOG_FATAL,
1867 "Audio volume adjustment on sample format %s is not supported.\n",
1868 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1869 exit_program(1);
1870 }
1871 }
1872
1873 rate_emu_sleep(ist);
1874
1875 for (i = 0; i < nb_output_streams; i++) {
1876 OutputStream *ost = &output_streams[i];
1877
1878 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1879 continue;
1880 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1881 }
1882
1883 return ret;
1884 }
1885
1886 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1887 {
1888 AVFrame *decoded_frame, *filtered_frame = NULL;
1889 void *buffer_to_free = NULL;
1890 int i, ret = 0;
1891 float quality;
1892 #if CONFIG_AVFILTER
1893 int frame_available = 1;
1894 #endif
1895
1896 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1897 return AVERROR(ENOMEM);
1898 else
1899 avcodec_get_frame_defaults(ist->decoded_frame);
1900 decoded_frame = ist->decoded_frame;
1901 pkt->pts = *pkt_pts;
1902 pkt->dts = ist->pts;
1903 *pkt_pts = AV_NOPTS_VALUE;
1904
1905 ret = avcodec_decode_video2(ist->st->codec,
1906 decoded_frame, got_output, pkt);
1907 if (ret < 0)
1908 return ret;
1909
1910 quality = same_quant ? decoded_frame->quality : 0;
1911 if (!*got_output) {
1912 /* no picture yet */
1913 return ret;
1914 }
1915 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1916 decoded_frame->pkt_dts);
1917 if (pkt->duration)
1918 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1919 else if (ist->st->codec->time_base.num != 0) {
1920 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1921 ist->st->codec->ticks_per_frame;
1922 ist->next_pts += ((int64_t)AV_TIME_BASE *
1923 ist->st->codec->time_base.num * ticks) /
1924 ist->st->codec->time_base.den;
1925 }
1926 pkt->size = 0;
1927 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1928
1929 rate_emu_sleep(ist);
1930
1931 for (i = 0; i < nb_output_streams; i++) {
1932 OutputStream *ost = &output_streams[i];
1933 int frame_size;
1934
1935 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1936 continue;
1937
1938 #if CONFIG_AVFILTER
1939 if (ist->st->sample_aspect_ratio.num)
1940 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1941 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1942 FrameBuffer *buf = decoded_frame->opaque;
1943 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1944 decoded_frame->data, decoded_frame->linesize,
1945 AV_PERM_READ | AV_PERM_PRESERVE,
1946 ist->st->codec->width, ist->st->codec->height,
1947 ist->st->codec->pix_fmt);
1948
1949 avfilter_copy_frame_props(fb, decoded_frame);
1950 fb->pts = ist->pts;
1951 fb->buf->priv = buf;
1952 fb->buf->free = filter_release_buffer;
1953
1954 buf->refcount++;
1955 av_buffersrc_buffer(ost->input_video_filter, fb);
1956 } else
1957 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
1958 ist->pts, decoded_frame->sample_aspect_ratio);
1959
1960 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1961 av_free(buffer_to_free);
1962 return AVERROR(ENOMEM);
1963 } else
1964 avcodec_get_frame_defaults(ist->filtered_frame);
1965 filtered_frame = ist->filtered_frame;
1966
1967 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1968 while (frame_available) {
1969 AVRational ist_pts_tb;
1970 if (ost->output_video_filter)
1971 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1972 if (ost->picref)
1973 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1974 if (ost->picref->video && !ost->frame_aspect_ratio)
1975 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1976 #else
1977 filtered_frame = decoded_frame;
1978 #endif
1979
1980 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1981 same_quant ? quality : ost->st->codec->global_quality);
1982 if (vstats_filename && frame_size)
1983 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1984 #if CONFIG_AVFILTER
1985 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1986 if (ost->picref)
1987 avfilter_unref_buffer(ost->picref);
1988 }
1989 #endif
1990 }
1991
1992 av_free(buffer_to_free);
1993 return ret;
1994 }
1995
1996 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1997 {
1998 AVSubtitle subtitle;
1999 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2000 &subtitle, got_output, pkt);
2001 if (ret < 0)
2002 return ret;
2003 if (!*got_output)
2004 return ret;
2005
2006 rate_emu_sleep(ist);
2007
2008 for (i = 0; i < nb_output_streams; i++) {
2009 OutputStream *ost = &output_streams[i];
2010
2011 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2012 continue;
2013
2014 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2015 }
2016
2017 avsubtitle_free(&subtitle);
2018 return ret;
2019 }
2020
2021 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2022 static int output_packet(InputStream *ist,
2023 OutputStream *ost_table, int nb_ostreams,
2024 const AVPacket *pkt)
2025 {
2026 int i;
2027 int got_output;
2028 int64_t pkt_pts = AV_NOPTS_VALUE;
2029 AVPacket avpkt;
2030
2031 if (ist->next_pts == AV_NOPTS_VALUE)
2032 ist->next_pts = ist->pts;
2033
2034 if (pkt == NULL) {
2035 /* EOF handling */
2036 av_init_packet(&avpkt);
2037 avpkt.data = NULL;
2038 avpkt.size = 0;
2039 goto handle_eof;
2040 } else {
2041 avpkt = *pkt;
2042 }
2043
2044 if (pkt->dts != AV_NOPTS_VALUE)
2045 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2046 if (pkt->pts != AV_NOPTS_VALUE)
2047 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2048
2049 // while we have more to decode or while the decoder did output something on EOF
2050 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2051 int ret = 0;
2052 handle_eof:
2053
2054 ist->pts = ist->next_pts;
2055
2056 if (avpkt.size && avpkt.size != pkt->size) {
2057 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2058 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2059 ist->showed_multi_packet_warning = 1;
2060 }
2061
2062 switch (ist->st->codec->codec_type) {
2063 case AVMEDIA_TYPE_AUDIO:
2064 ret = transcode_audio (ist, &avpkt, &got_output);
2065 break;
2066 case AVMEDIA_TYPE_VIDEO:
2067 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2068 break;
2069 case AVMEDIA_TYPE_SUBTITLE:
2070 ret = transcode_subtitles(ist, &avpkt, &got_output);
2071 break;
2072 default:
2073 return -1;
2074 }
2075
2076 if (ret < 0)
2077 return ret;
2078 // touch data and size only if not EOF
2079 if (pkt) {
2080 avpkt.data += ret;
2081 avpkt.size -= ret;
2082 }
2083 if (!got_output) {
2084 continue;
2085 }
2086 }
2087
2088 /* handle stream copy */
2089 if (!ist->decoding_needed) {
2090 rate_emu_sleep(ist);
2091 ist->pts = ist->next_pts;
2092 switch (ist->st->codec->codec_type) {
2093 case AVMEDIA_TYPE_AUDIO:
2094 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2095 ist->st->codec->sample_rate;
2096 break;
2097 case AVMEDIA_TYPE_VIDEO:
2098 if (ist->st->codec->time_base.num != 0) {
2099 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2100 ist->next_pts += ((int64_t)AV_TIME_BASE *
2101 ist->st->codec->time_base.num * ticks) /
2102 ist->st->codec->time_base.den;
2103 }
2104 break;
2105 }
2106 }
2107 for (i = 0; pkt && i < nb_ostreams; i++) {
2108 OutputStream *ost = &ost_table[i];
2109
2110 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2111 continue;
2112
2113 do_streamcopy(ist, ost, pkt);
2114 }
2115
2116 return 0;
2117 }
2118
2119 static void print_sdp(OutputFile *output_files, int n)
2120 {
2121 char sdp[2048];
2122 int i;
2123 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2124
2125 if (!avc)
2126 exit_program(1);
2127 for (i = 0; i < n; i++)
2128 avc[i] = output_files[i].ctx;
2129
2130 av_sdp_create(avc, n, sdp, sizeof(sdp));
2131 printf("SDP:\n%s\n", sdp);
2132 fflush(stdout);
2133 av_freep(&avc);
2134 }
2135
2136 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2137 char *error, int error_len)
2138 {
2139 int i;
2140 InputStream *ist = &input_streams[ist_index];
2141 if (ist->decoding_needed) {
2142 AVCodec *codec = ist->dec;
2143 if (!codec) {
2144 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2145 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2146 return AVERROR(EINVAL);
2147 }
2148
2149 /* update requested sample format for the decoder based on the
2150 corresponding encoder sample format */
2151 for (i = 0; i < nb_output_streams; i++) {
2152 OutputStream *ost = &output_streams[i];
2153 if (ost->source_index == ist_index) {
2154 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2155 break;
2156 }
2157 }
2158
2159 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2160 ist->st->codec->get_buffer = codec_get_buffer;
2161 ist->st->codec->release_buffer = codec_release_buffer;
2162 ist->st->codec->opaque = ist;
2163 }
2164
2165 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2166 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2167 ist->file_index, ist->st->index);
2168 return AVERROR(EINVAL);
2169 }
2170 assert_codec_experimental(ist->st->codec, 0);
2171 assert_avoptions(ist->opts);
2172 }
2173
2174 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;
2175 ist->next_pts = AV_NOPTS_VALUE;
2176 init_pts_correction(&ist->pts_ctx);
2177 ist->is_start = 1;
2178
2179 return 0;
2180 }
2181
2182 static int transcode_init(OutputFile *output_files,
2183 int nb_output_files,
2184 InputFile *input_files,
2185 int nb_input_files)
2186 {
2187 int ret = 0, i, j, k;
2188 AVFormatContext *oc;
2189 AVCodecContext *codec, *icodec;
2190 OutputStream *ost;
2191 InputStream *ist;
2192 char error[1024];
2193 int want_sdp = 1;
2194
2195 /* init framerate emulation */
2196 for (i = 0; i < nb_input_files; i++) {
2197 InputFile *ifile = &input_files[i];
2198 if (ifile->rate_emu)
2199 for (j = 0; j < ifile->nb_streams; j++)
2200 input_streams[j + ifile->ist_index].start = av_gettime();
2201 }
2202
2203 /* output stream init */
2204 for (i = 0; i < nb_output_files; i++) {
2205 oc = output_files[i].ctx;
2206 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2207 av_dump_format(oc, i, oc->filename, 1);
2208 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2209 return AVERROR(EINVAL);
2210 }
2211 }
2212
2213 /* for each output stream, we compute the right encoding parameters */
2214 for (i = 0; i < nb_output_streams; i++) {
2215 ost = &output_streams[i];
2216 oc = output_files[ost->file_index].ctx;
2217 ist = &input_streams[ost->source_index];
2218
2219 if (ost->attachment_filename)
2220 continue;
2221
2222 codec = ost->st->codec;
2223 icodec = ist->st->codec;
2224
2225 ost->st->disposition = ist->st->disposition;
2226 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2227 codec->chroma_sample_location = icodec->chroma_sample_location;
2228
2229 if (ost->stream_copy) {
2230 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2231
2232 if (extra_size > INT_MAX) {
2233 return AVERROR(EINVAL);
2234 }
2235
2236 /* if stream_copy is selected, no need to decode or encode */
2237 codec->codec_id = icodec->codec_id;
2238 codec->codec_type = icodec->codec_type;
2239
2240 if (!codec->codec_tag) {
2241 if (!oc->oformat->codec_tag ||
2242 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2243 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2244 codec->codec_tag = icodec->codec_tag;
2245 }
2246
2247 codec->bit_rate = icodec->bit_rate;
2248 codec->rc_max_rate = icodec->rc_max_rate;
2249 codec->rc_buffer_size = icodec->rc_buffer_size;
2250 codec->field_order = icodec->field_order;
2251 codec->extradata = av_mallocz(extra_size);
2252 if (!codec->extradata) {
2253 return AVERROR(ENOMEM);
2254 }
2255 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2256 codec->extradata_size = icodec->extradata_size;
2257 if (!copy_tb) {
2258 codec->time_base = icodec->time_base;
2259 codec->time_base.num *= icodec->ticks_per_frame;
2260 av_reduce(&codec->time_base.num, &codec->time_base.den,
2261 codec->time_base.num, codec->time_base.den, INT_MAX);
2262 } else
2263 codec->time_base = ist->st->time_base;
2264
2265 switch (codec->codec_type) {
2266 case AVMEDIA_TYPE_AUDIO:
2267 if (audio_volume != 256) {
2268 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2269 exit_program(1);
2270 }
2271 codec->channel_layout = icodec->channel_layout;
2272 codec->sample_rate = icodec->sample_rate;
2273 codec->channels = icodec->channels;
2274 codec->frame_size = icodec->frame_size;
2275 codec->audio_service_type = icodec->audio_service_type;
2276 codec->block_align = icodec->block_align;
2277 break;
2278 case AVMEDIA_TYPE_VIDEO:
2279 codec->pix_fmt = icodec->pix_fmt;
2280 codec->width = icodec->width;
2281 codec->height = icodec->height;
2282 codec->has_b_frames = icodec->has_b_frames;
2283 if (!codec->sample_aspect_ratio.num) {
2284 codec->sample_aspect_ratio =
2285 ost->st->sample_aspect_ratio =
2286 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2287 ist->st->codec->sample_aspect_ratio.num ?
2288 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2289 }
2290 break;
2291 case AVMEDIA_TYPE_SUBTITLE:
2292 codec->width = icodec->width;
2293 codec->height = icodec->height;
2294 break;
2295 case AVMEDIA_TYPE_DATA:
2296 case AVMEDIA_TYPE_ATTACHMENT:
2297 break;
2298 default:
2299 abort();
2300 }
2301 } else {
2302 if (!ost->enc)
2303 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2304
2305 ist->decoding_needed = 1;
2306 ost->encoding_needed = 1;
2307
2308 switch (codec->codec_type) {
2309 case AVMEDIA_TYPE_AUDIO:
2310 ost->fifo = av_fifo_alloc(1024);
2311 if (!ost->fifo) {
2312 return AVERROR(ENOMEM);
2313 }
2314 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2315
2316 if (!codec->sample_rate)
2317 codec->sample_rate = icodec->sample_rate;
2318 choose_sample_rate(ost->st, ost->enc);
2319 codec->time_base = (AVRational){ 1, codec->sample_rate };
2320
2321 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2322 codec->sample_fmt = icodec->sample_fmt;
2323 choose_sample_fmt(ost->st, ost->enc);
2324
2325 if (!codec->channels)
2326 codec->channels = icodec->channels;
2327 codec->channel_layout = icodec->channel_layout;
2328 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2329 codec->channel_layout = 0;
2330
2331 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2332 icodec->request_channels = codec-> channels;
2333 ost->resample_sample_fmt = icodec->sample_fmt;
2334 ost->resample_sample_rate = icodec->sample_rate;
2335 ost->resample_channels = icodec->channels;
2336 break;
2337 case AVMEDIA_TYPE_VIDEO:
2338 if (codec->pix_fmt == PIX_FMT_NONE)
2339 codec->pix_fmt = icodec->pix_fmt;
2340 choose_pixel_fmt(ost->st, ost->enc);
2341
2342 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2343 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2344 exit_program(1);
2345 }
2346
2347 if (!codec->width || !codec->height) {
2348 codec->width = icodec->width;
2349 codec->height = icodec->height;
2350 }
2351
2352 ost->video_resample = codec->width != icodec->width ||
2353 codec->height != icodec->height ||
2354 codec->pix_fmt != icodec->pix_fmt;
2355 if (ost->video_resample) {
2356 #if !CONFIG_AVFILTER
2357 avcodec_get_frame_defaults(&ost->pict_tmp);
2358 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2359 codec->width, codec->height)) {
2360 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2361 exit_program(1);
2362 }
2363 ost->img_resample_ctx = sws_getContext(
2364 icodec->width,
2365 icodec->height,
2366 icodec->pix_fmt,
2367 codec->width,
2368 codec->height,
2369 codec->pix_fmt,
2370 ost->sws_flags, NULL, NULL, NULL);
2371 if (ost->img_resample_ctx == NULL) {
2372 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2373 exit_program(1);
2374 }
2375 #endif
2376 codec->bits_per_raw_sample = 0;
2377 }
2378
2379 ost->resample_height = icodec->height;
2380 ost->resample_width = icodec->width;
2381 ost->resample_pix_fmt = icodec->pix_fmt;
2382
2383 if (!ost->frame_rate.num)
2384 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2385 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2386 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2387 ost->frame_rate = ost->enc->supported_framerates[idx];
2388 }
2389 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2390
2391 #if CONFIG_AVFILTER
2392 if (configure_video_filters(ist, ost)) {
2393 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2394 exit(1);
2395 }
2396 #endif
2397 break;
2398 case AVMEDIA_TYPE_SUBTITLE:
2399 break;
2400 default:
2401 abort();
2402 break;
2403 }
2404 /* two pass mode */
2405 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2406 char logfilename[1024];
2407 FILE *f;
2408
2409 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2410 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2411 i);
2412 if (codec->flags & CODEC_FLAG_PASS1) {
2413 f = fopen(logfilename, "wb");
2414 if (!f) {
2415 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2416 logfilename, strerror(errno));
2417 exit_program(1);
2418 }
2419 ost->logfile = f;
2420 } else {
2421 char *logbuffer;
2422 size_t logbuffer_size;
2423 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2424 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2425 logfilename);
2426 exit_program(1);
2427 }
2428 codec->stats_in = logbuffer;
2429 }
2430 }
2431 }
2432 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2433 int size = codec->width * codec->height;
2434 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2435 }
2436 }
2437
2438 if (!bit_buffer)
2439 bit_buffer = av_malloc(bit_buffer_size);
2440 if (!bit_buffer) {
2441 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2442 bit_buffer_size);
2443 return AVERROR(ENOMEM);
2444 }
2445
2446 /* open each encoder */
2447 for (i = 0; i < nb_output_streams; i++) {
2448 ost = &output_streams[i];
2449 if (ost->encoding_needed) {
2450 AVCodec *codec = ost->enc;
2451 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2452 if (!codec) {
2453 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2454 ost->st->codec->codec_id, ost->file_index, ost->index);
2455 ret = AVERROR(EINVAL);
2456 goto dump_format;
2457 }
2458 if (dec->subtitle_header) {
2459 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2460 if (!ost->st->codec->subtitle_header) {
2461 ret = AVERROR(ENOMEM);
2462 goto dump_format;
2463 }
2464 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2465 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2466 }
2467 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2468 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2469 ost->file_index, ost->index);
2470 ret = AVERROR(EINVAL);
2471 goto dump_format;
2472 }
2473 assert_codec_experimental(ost->st->codec, 1);
2474 assert_avoptions(ost->opts);
2475 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2476 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2477 "It takes bits/s as argument, not kbits/s\n");
2478 extra_size += ost->st->codec->extradata_size;
2479
2480 if (ost->st->codec->me_threshold)
2481 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2482 }
2483 }
2484
2485 /* init input streams */
2486 for (i = 0; i < nb_input_streams; i++)
2487 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2488 goto dump_format;
2489
2490 /* discard unused programs */
2491 for (i = 0; i < nb_input_files; i++) {
2492 InputFile *ifile = &input_files[i];
2493 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2494 AVProgram *p = ifile->ctx->programs[j];
2495 int discard = AVDISCARD_ALL;
2496
2497 for (k = 0; k < p->nb_stream_indexes; k++)
2498 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2499 discard = AVDISCARD_DEFAULT;
2500 break;
2501 }
2502 p->discard = discard;
2503 }
2504 }
2505
2506 /* open files and write file headers */
2507 for (i = 0; i < nb_output_files; i++) {
2508 oc = output_files[i].ctx;
2509 oc->interrupt_callback = int_cb;
2510 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2511 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2512 ret = AVERROR(EINVAL);
2513 goto dump_format;
2514 }
2515 assert_avoptions(output_files[i].opts);
2516 if (strcmp(oc->oformat->name, "rtp")) {
2517 want_sdp = 0;
2518 }
2519 }
2520
2521 dump_format:
2522 /* dump the file output parameters - cannot be done before in case
2523 of stream copy */
2524 for (i = 0; i < nb_output_files; i++) {
2525 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2526 }
2527
2528 /* dump the stream mapping */
2529 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2530 for (i = 0; i < nb_output_streams; i++) {
2531 ost = &output_streams[i];
2532
2533 if (ost->attachment_filename) {
2534 /* an attached file */
2535 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2536 ost->attachment_filename, ost->file_index, ost->index);
2537 continue;
2538 }
2539 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2540 input_streams[ost->source_index].file_index,
2541 input_streams[ost->source_index].st->index,
2542 ost->file_index,
2543 ost->index);
2544 if (ost->sync_ist != &input_streams[ost->source_index])
2545 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2546 ost->sync_ist->file_index,
2547 ost->sync_ist->st->index);
2548 if (ost->stream_copy)
2549 av_log(NULL, AV_LOG_INFO, " (copy)");
2550 else
2551 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2552 input_streams[ost->source_index].dec->name : "?",
2553 ost->enc ? ost->enc->name : "?");
2554 av_log(NULL, AV_LOG_INFO, "\n");
2555 }
2556
2557 if (ret) {
2558 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2559 return ret;
2560 }
2561
2562 if (want_sdp) {
2563 print_sdp(output_files, nb_output_files);
2564 }
2565
2566 return 0;
2567 }
2568
2569 /*
2570 * The following code is the main loop of the file converter
2571 */
2572 static int transcode(OutputFile *output_files,
2573 int nb_output_files,
2574 InputFile *input_files,
2575 int nb_input_files)
2576 {
2577 int ret, i;
2578 AVFormatContext *is, *os;
2579 OutputStream *ost;
2580 InputStream *ist;
2581 uint8_t *no_packet;
2582 int no_packet_count = 0;
2583 int64_t timer_start;
2584
2585 if (!(no_packet = av_mallocz(nb_input_files)))
2586 exit_program(1);
2587
2588 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2589 if (ret < 0)
2590 goto fail;
2591
2592 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2593 term_init();
2594
2595 timer_start = av_gettime();
2596
2597 for (; received_sigterm == 0;) {
2598 int file_index, ist_index;
2599 AVPacket pkt;
2600 int64_t ipts_min;
2601 double opts_min;
2602
2603 ipts_min = INT64_MAX;
2604 opts_min = 1e100;
2605
2606 /* select the stream that we must read now by looking at the
2607 smallest output pts */
2608 file_index = -1;
2609 for (i = 0; i < nb_output_streams; i++) {
2610 OutputFile *of;
2611 int64_t ipts;
2612 double opts;
2613 ost = &output_streams[i];
2614 of = &output_files[ost->file_index];
2615 os = output_files[ost->file_index].ctx;
2616 ist = &input_streams[ost->source_index];
2617 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2618 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2619 continue;
2620 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2621 ipts = ist->pts;
2622 if (!input_files[ist->file_index].eof_reached) {
2623 if (ipts < ipts_min) {
2624 ipts_min = ipts;
2625 if (input_sync)
2626 file_index = ist->file_index;
2627 }
2628 if (opts < opts_min) {
2629 opts_min = opts;
2630 if (!input_sync) file_index = ist->file_index;
2631 }
2632 }
2633 if (ost->frame_number >= ost->max_frames) {
2634 int j;
2635 for (j = 0; j < of->ctx->nb_streams; j++)
2636 output_streams[of->ost_index + j].is_past_recording_time = 1;
2637 continue;
2638 }
2639 }
2640 /* if none, if is finished */
2641 if (file_index < 0) {
2642 if (no_packet_count) {
2643 no_packet_count = 0;
2644 memset(no_packet, 0, nb_input_files);
2645 usleep(10000);
2646 continue;
2647 }
2648 break;
2649 }
2650
2651 /* read a frame from it and output it in the fifo */
2652 is = input_files[file_index].ctx;
2653 ret = av_read_frame(is, &pkt);
2654 if (ret == AVERROR(EAGAIN)) {
2655 no_packet[file_index] = 1;
2656 no_packet_count++;
2657 continue;
2658 }
2659 if (ret < 0) {
2660 input_files[file_index].eof_reached = 1;
2661 if (opt_shortest)
2662 break;
2663 else
2664 continue;
2665 }
2666
2667 no_packet_count = 0;
2668 memset(no_packet, 0, nb_input_files);
2669
2670 if (do_pkt_dump) {
2671 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2672 is->streams[pkt.stream_index]);
2673 }
2674 /* the following test is needed in case new streams appear
2675 dynamically in stream : we ignore them */
2676 if (pkt.stream_index >= input_files[file_index].nb_streams)
2677 goto discard_packet;
2678 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2679 ist = &input_streams[ist_index];
2680 if (ist->discard)
2681 goto discard_packet;
2682
2683 if (pkt.dts != AV_NOPTS_VALUE)
2684 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2685 if (pkt.pts != AV_NOPTS_VALUE)
2686 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2687
2688 if (pkt.pts != AV_NOPTS_VALUE)
2689 pkt.pts *= ist->ts_scale;
2690 if (pkt.dts != AV_NOPTS_VALUE)
2691 pkt.dts *= ist->ts_scale;
2692
2693 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2694 // ist->next_pts,
2695 // pkt.dts, input_files[ist->file_index].ts_offset,
2696 // ist->st->codec->codec_type);
2697 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2698 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2699 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2700 int64_t delta = pkt_dts - ist->next_pts;
2701 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2702 input_files[ist->file_index].ts_offset -= delta;
2703 av_log(NULL, AV_LOG_DEBUG,
2704 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2705 delta, input_files[ist->file_index].ts_offset);
2706 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2707 if (pkt.pts != AV_NOPTS_VALUE)
2708 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2709 }
2710 }
2711
2712 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2713 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2714
2715 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2716 ist->file_index, ist->st->index);
2717 if (exit_on_error)
2718 exit_program(1);
2719 av_free_packet(&pkt);
2720 continue;
2721 }
2722
2723 discard_packet:
2724 av_free_packet(&pkt);
2725
2726 /* dump report by using the output first video and audio streams */
2727 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2728 }
2729
2730 /* at the end of stream, we must flush the decoder buffers */
2731 for (i = 0; i < nb_input_streams; i++) {
2732 ist = &input_streams[i];
2733 if (ist->decoding_needed) {
2734 output_packet(ist, output_streams, nb_output_streams, NULL);
2735 }
2736 }
2737 flush_encoders(output_streams, nb_output_streams);
2738
2739 term_exit();
2740
2741 /* write the trailer if needed and close file */
2742 for (i = 0; i < nb_output_files; i++) {
2743 os = output_files[i].ctx;
2744 av_write_trailer(os);
2745 }
2746
2747 /* dump report by using the first video and audio streams */
2748 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2749
2750 /* close each encoder */
2751 for (i = 0; i < nb_output_streams; i++) {
2752 ost = &output_streams[i];
2753 if (ost->encoding_needed) {
2754 av_freep(&ost->st->codec->stats_in);
2755 avcodec_close(ost->st->codec);
2756 }
2757 #if CONFIG_AVFILTER
2758 avfilter_graph_free(&ost->graph);
2759 #endif
2760 }
2761
2762 /* close each decoder */
2763 for (i = 0; i < nb_input_streams; i++) {
2764 ist = &input_streams[i];
2765 if (ist->decoding_needed) {
2766 avcodec_close(ist->st->codec);
2767 }
2768 }
2769
2770 /* finished ! */
2771 ret = 0;
2772
2773 fail:
2774 av_freep(&bit_buffer);
2775 av_freep(&no_packet);
2776
2777 if (output_streams) {
2778 for (i = 0; i < nb_output_streams; i++) {
2779 ost = &output_streams[i];
2780 if (ost) {
2781 if (ost->stream_copy)
2782 av_freep(&ost->st->codec->extradata);
2783 if (ost->logfile) {
2784 fclose(ost->logfile);
2785 ost->logfile = NULL;
2786 }
2787 av_fifo_free(ost->fifo); /* works even if fifo is not
2788 initialized but set to zero */
2789 av_freep(&ost->st->codec->subtitle_header);
2790 av_free(ost->pict_tmp.data[0]);
2791 av_free(ost->forced_kf_pts);
2792 if (ost->video_resample)
2793 sws_freeContext(ost->img_resample_ctx);
2794 if (ost->resample)
2795 audio_resample_close(ost->resample);
2796 if (ost->reformat_ctx)
2797 av_audio_convert_free(ost->reformat_ctx);
2798 av_dict_free(&ost->opts);
2799 }
2800 }
2801 }
2802 return ret;
2803 }
2804
2805 static double parse_frame_aspect_ratio(const char *arg)
2806 {
2807 int x = 0, y = 0;
2808 double ar = 0;
2809 const char *p;
2810 char *end;
2811
2812 p = strchr(arg, ':');
2813 if (p) {
2814 x = strtol(arg, &end, 10);
2815 if (end == p)
2816 y = strtol(end + 1, &end, 10);
2817 if (x > 0 && y > 0)
2818 ar = (double)x / (double)y;
2819 } else
2820 ar = strtod(arg, NULL);
2821
2822 if (!ar) {
2823 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2824 exit_program(1);
2825 }
2826 return ar;
2827 }
2828
2829 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2830 {
2831 return parse_option(o, "codec:a", arg, options);
2832 }
2833
2834 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2835 {
2836 return parse_option(o, "codec:v", arg, options);
2837 }
2838
2839 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2840 {
2841 return parse_option(o, "codec:s", arg, options);
2842 }
2843
2844 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2845 {
2846 return parse_option(o, "codec:d", arg, options);
2847 }
2848
2849 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2850 {
2851 StreamMap *m = NULL;
2852 int i, negative = 0, file_idx;
2853 int sync_file_idx = -1, sync_stream_idx;
2854 char *p, *sync;
2855 char *map;
2856
2857 if (*arg == '-') {
2858 negative = 1;
2859 arg++;
2860 }
2861 map = av_strdup(arg);
2862
2863 /* parse sync stream first, just pick first matching stream */
2864 if (sync = strchr(map, ',')) {
2865 *sync = 0;
2866 sync_file_idx = strtol(sync + 1, &sync, 0);
2867 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2868 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2869 exit_program(1);
2870 }
2871 if (*sync)
2872 sync++;
2873 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2874 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2875 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2876 sync_stream_idx = i;
2877 break;
2878 }
2879 if (i == input_files[sync_file_idx].nb_streams) {
2880 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2881 "match any streams.\n", arg);
2882 exit_program(1);
2883 }
2884 }
2885
2886
2887 file_idx = strtol(map, &p, 0);
2888 if (file_idx >= nb_input_files || file_idx < 0) {
2889 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2890 exit_program(1);
2891 }
2892 if (negative)
2893 /* disable some already defined maps */
2894 for (i = 0; i < o->nb_stream_maps; i++) {
2895 m = &o->stream_maps[i];
2896 if (file_idx == m->file_index &&
2897 check_stream_specifier(input_files[m->file_index].ctx,
2898 input_files[m->file_index].ctx->streams[m->stream_index],
2899 *p == ':' ? p + 1 : p) > 0)
2900 m->disabled = 1;
2901 }
2902 else
2903 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2904 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2905 *p == ':' ? p + 1 : p) <= 0)
2906 continue;
2907 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2908 &o->nb_stream_maps, o->nb_stream_maps + 1);
2909 m = &o->stream_maps[o->nb_stream_maps - 1];
2910
2911 m->file_index = file_idx;
2912 m->stream_index = i;
2913
2914 if (sync_file_idx >= 0) {
2915 m->sync_file_index = sync_file_idx;
2916 m->sync_stream_index = sync_stream_idx;
2917 } else {
2918 m->sync_file_index = file_idx;
2919 m->sync_stream_index = i;
2920 }
2921 }
2922
2923 if (!m) {
2924 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2925 exit_program(1);
2926 }
2927
2928 av_freep(&map);
2929 return 0;
2930 }
2931
2932 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2933 {
2934 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2935 &o->nb_attachments, o->nb_attachments + 1);
2936 o->attachments[o->nb_attachments - 1] = arg;
2937 return 0;
2938 }
2939
2940 /**
2941 * Parse a metadata specifier in arg.
2942 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2943 * @param index for type c/p, chapter/program index is written here
2944 * @param stream_spec for type s, the stream specifier is written here
2945 */
2946 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2947 {
2948 if (*arg) {
2949 *type = *arg;
2950 switch (*arg) {
2951 case 'g':
2952 break;
2953 case 's':
2954 if (*(++arg) && *arg != ':') {
2955 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2956 exit_program(1);
2957 }
2958 *stream_spec = *arg == ':' ? arg + 1 : "";
2959 break;
2960 case 'c':
2961 case 'p':
2962 if (*(++arg) == ':')
2963 *index = strtol(++arg, NULL, 0);
2964 break;
2965 default:
2966 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2967 exit_program(1);
2968 }
2969 } else
2970 *type = 'g';
2971 }
2972
2973 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2974 {
2975 AVDictionary **meta_in = NULL;
2976 AVDictionary **meta_out;
2977 int i, ret = 0;
2978 char type_in, type_out;
2979 const char *istream_spec = NULL, *ostream_spec = NULL;
2980 int idx_in = 0, idx_out = 0;
2981
2982 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
2983 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2984
2985 if (type_in == 'g' || type_out == 'g')
2986 o->metadata_global_manual = 1;
2987 if (type_in == 's' || type_out == 's')
2988 o->metadata_streams_manual = 1;
2989 if (type_in == 'c' || type_out == 'c')
2990 o->metadata_chapters_manual = 1;
2991
2992 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2993 if ((index) < 0 || (index) >= (nb_elems)) {\
2994 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
2995 (desc), (index));\
2996 exit_program(1);\
2997 }
2998
2999 #define SET_DICT(type, meta, context, index)\
3000 switch (type) {\
3001 case 'g':\
3002 meta = &context->metadata;\
3003 break;\
3004 case 'c':\
3005 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3006 meta = &context->chapters[index]->metadata;\
3007 break;\
3008 case 'p':\
3009 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3010 meta = &context->programs[index]->metadata;\
3011 break;\
3012 }\
3013
3014 SET_DICT(type_in, meta_in, ic, idx_in);
3015 SET_DICT(type_out, meta_out, oc, idx_out);
3016
3017 /* for input streams choose first matching stream */
3018 if (type_in == 's') {
3019 for (i = 0; i < ic->nb_streams; i++) {
3020 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3021 meta_in = &ic->streams[i]->metadata;
3022 break;
3023 } else if (ret < 0)
3024 exit_program(1);
3025 }
3026 if (!meta_in) {
3027 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3028 exit_program(1);
3029 }
3030 }
3031
3032 if (type_out == 's') {
3033 for (i = 0; i < oc->nb_streams; i++) {
3034 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3035 meta_out = &oc->streams[i]->metadata;
3036 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3037 } else if (ret < 0)
3038 exit_program(1);
3039 }
3040 } else
3041 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3042
3043 return 0;
3044 }
3045
3046 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3047 {
3048 const char *codec_string = encoder ? "encoder" : "decoder";
3049 AVCodec *codec;
3050
3051 codec = encoder ?
3052 avcodec_find_encoder_by_name(name) :
3053 avcodec_find_decoder_by_name(name);
3054 if (!codec) {
3055 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3056 exit_program(1);
3057 }
3058 if (codec->type != type) {
3059 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3060 exit_program(1);
3061 }
3062 return codec;
3063 }
3064
3065 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3066 {
3067 char *codec_name = NULL;
3068
3069 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3070 if (codec_name) {
3071 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3072 st->codec->codec_id = codec->id;
3073 return codec;
3074 } else
3075 return avcodec_find_decoder(st->codec->codec_id);
3076 }
3077
3078 /**
3079 * Add all the streams from the given input file to the global
3080 * list of input streams.
3081 */
3082 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3083 {
3084 int i, rfps, rfps_base;
3085
3086 for (i = 0; i < ic->nb_streams; i++) {
3087 AVStream *st = ic->streams[i];
3088 AVCodecContext *dec = st->codec;
3089 InputStream *ist;
3090
3091 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3092 ist = &input_streams[nb_input_streams - 1];
3093 ist->st = st;
3094 ist->file_index = nb_input_files;
3095 ist->discard = 1;
3096 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3097
3098 ist->ts_scale = 1.0;
3099 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3100
3101 ist->dec = choose_decoder(o, ic, st);
3102
3103 switch (dec->codec_type) {
3104 case AVMEDIA_TYPE_AUDIO:
3105 if (o->audio_disable)
3106 st->discard = AVDISCARD_ALL;
3107 break;
3108 case AVMEDIA_TYPE_VIDEO:
3109 rfps = ic->streams[i]->r_frame_rate.num;
3110 rfps_base = ic->streams[i]->r_frame_rate.den;
3111 if (dec->lowres) {
3112 dec->flags |= CODEC_FLAG_EMU_EDGE;
3113 dec->height >>= dec->lowres;
3114 dec->width >>= dec->lowres;
3115 }
3116
3117 if (dec->time_base.den != rfps * dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3118
3119 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3120 i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3121 (float)rfps / rfps_base, rfps, rfps_base);
3122 }
3123
3124 if (o->video_disable)
3125 st->discard = AVDISCARD_ALL;
3126 else if (video_discard)
3127 st->discard = video_discard;
3128 break;
3129 case AVMEDIA_TYPE_DATA:
3130 break;
3131 case AVMEDIA_TYPE_SUBTITLE:
3132 if (o->subtitle_disable)
3133 st->discard = AVDISCARD_ALL;
3134 break;
3135 case AVMEDIA_TYPE_ATTACHMENT:
3136 case AVMEDIA_TYPE_UNKNOWN:
3137 break;
3138 default:
3139 abort();
3140 }
3141 }
3142 }
3143
3144 static void assert_file_overwrite(const char *filename)
3145 {
3146 if (!file_overwrite &&
3147 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3148 av_strstart(filename, "file:", NULL))) {
3149 if (avio_check(filename, 0) == 0) {
3150 if (!using_stdin) {
3151 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3152 fflush(stderr);
3153 if (!read_yesno()) {
3154 fprintf(stderr, "Not overwriting - exiting\n");
3155 exit_program(1);
3156 }
3157 }
3158 else {
3159 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3160 exit_program(1);
3161 }
3162 }
3163 }
3164 }
3165
3166 static void dump_attachment(AVStream *st, const char *filename)
3167 {
3168 int ret;
3169 AVIOContext *out = NULL;
3170 AVDictionaryEntry *e;
3171
3172 if (!st->codec->extradata_size) {
3173 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3174 nb_input_files - 1, st->index);
3175 return;
3176 }
3177 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3178 filename = e->value;
3179 if (!*filename) {
3180 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3181 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3182 exit_program(1);
3183 }
3184
3185 assert_file_overwrite(filename);
3186
3187 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3188 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3189 filename);
3190 exit_program(1);
3191 }
3192
3193 avio_write(out, st->codec->extradata, st->codec->extradata_size);
3194 avio_flush(out);
3195 avio_close(out);
3196 }
3197