alacdec: implement the 2-pass prediction type.
[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, OutputStream *ost)
859 {
860 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
861 AVCodecContext *avctx = ost->st->codec;
862 int ret;
863
864 while (bsfc) {
865 AVPacket new_pkt = *pkt;
866 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
867 &new_pkt.data, &new_pkt.size,
868 pkt->data, pkt->size,
869 pkt->flags & AV_PKT_FLAG_KEY);
870 if (a > 0) {
871 av_free_packet(pkt);
872 new_pkt.destruct = av_destruct_packet;
873 } else if (a < 0) {
874 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
875 bsfc->filter->name, pkt->stream_index,
876 avctx->codec ? avctx->codec->name : "copy");
877 print_error("", a);
878 if (exit_on_error)
879 exit_program(1);
880 }
881 *pkt = new_pkt;
882
883 bsfc = bsfc->next;
884 }
885
886 ret = av_interleaved_write_frame(s, pkt);
887 if (ret < 0) {
888 print_error("av_interleaved_write_frame()", ret);
889 exit_program(1);
890 }
891 ost->frame_number++;
892 }
893
894 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
895 {
896 int fill_char = 0x00;
897 if (sample_fmt == AV_SAMPLE_FMT_U8)
898 fill_char = 0x80;
899 memset(buf, fill_char, size);
900 }
901
902 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
903 InputStream *ist, AVFrame *decoded_frame)
904 {
905 uint8_t *buftmp;
906 int64_t audio_out_size, audio_buf_size;
907
908 int size_out, frame_bytes, ret, resample_changed;
909 AVCodecContext *enc = ost->st->codec;
910 AVCodecContext *dec = ist->st->codec;
911 int osize = av_get_bytes_per_sample(enc->sample_fmt);
912 int isize = av_get_bytes_per_sample(dec->sample_fmt);
913 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
914 uint8_t *buf = decoded_frame->data[0];
915 int size = decoded_frame->nb_samples * dec->channels * isize;
916 int64_t allocated_for_size = size;
917
918 need_realloc:
919 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
920 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
921 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
922 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
923 audio_buf_size *= osize * enc->channels;
924
925 audio_out_size = FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
926 if (coded_bps > 8 * osize)
927 audio_out_size = audio_out_size * coded_bps / (8*osize);
928 audio_out_size += FF_MIN_BUFFER_SIZE;
929
930 if (audio_out_size > INT_MAX || audio_buf_size > INT_MAX) {
931 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
932 exit_program(1);
933 }
934
935 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
936 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
937 if (!audio_buf || !audio_out) {
938 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
939 exit_program(1);
940 }
941
942 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
943 ost->audio_resample = 1;
944
945 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
946 ost->resample_channels != dec->channels ||
947 ost->resample_sample_rate != dec->sample_rate;
948
949 if ((ost->audio_resample && !ost->resample) || resample_changed) {
950 if (resample_changed) {
951 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",
952 ist->file_index, ist->st->index,
953 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
954 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
955 ost->resample_sample_fmt = dec->sample_fmt;
956 ost->resample_channels = dec->channels;
957 ost->resample_sample_rate = dec->sample_rate;
958 if (ost->resample)
959 audio_resample_close(ost->resample);
960 }
961 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
962 if (audio_sync_method <= 1 &&
963 ost->resample_sample_fmt == enc->sample_fmt &&
964 ost->resample_channels == enc->channels &&
965 ost->resample_sample_rate == enc->sample_rate) {
966 ost->resample = NULL;
967 ost->audio_resample = 0;
968 } else if (ost->audio_resample) {
969 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
970 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
971 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
972 enc->sample_rate, dec->sample_rate,
973 enc->sample_fmt, dec->sample_fmt,
974 16, 10, 0, 0.8);
975 if (!ost->resample) {
976 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
977 dec->channels, dec->sample_rate,
978 enc->channels, enc->sample_rate);
979 exit_program(1);
980 }
981 }
982 }
983
984 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
985 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
986 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
987 if (ost->reformat_ctx)
988 av_audio_convert_free(ost->reformat_ctx);
989 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
990 dec->sample_fmt, 1, NULL, 0);
991 if (!ost->reformat_ctx) {
992 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
993 av_get_sample_fmt_name(dec->sample_fmt),
994 av_get_sample_fmt_name(enc->sample_fmt));
995 exit_program(1);
996 }
997 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
998 }
999
1000 if (audio_sync_method) {
1001 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1002 av_fifo_size(ost->fifo) / (enc->channels * osize);
1003 int idelta = delta * dec->sample_rate / enc->sample_rate;
1004 int byte_delta = idelta * isize * dec->channels;
1005
1006 // FIXME resample delay
1007 if (fabs(delta) > 50) {
1008 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1009 if (byte_delta < 0) {
1010 byte_delta = FFMAX(byte_delta, -size);
1011 size += byte_delta;
1012 buf -= byte_delta;
1013 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1014 -byte_delta / (isize * dec->channels));
1015 if (!size)
1016 return;
1017 ist->is_start = 0;
1018 } else {
1019 static uint8_t *input_tmp = NULL;
1020 input_tmp = av_realloc(input_tmp, byte_delta + size);
1021
1022 if (byte_delta > allocated_for_size - size) {
1023 allocated_for_size = byte_delta + (int64_t)size;
1024 goto need_realloc;
1025 }
1026 ist->is_start = 0;
1027
1028 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1029 memcpy(input_tmp + byte_delta, buf, size);
1030 buf = input_tmp;
1031 size += byte_delta;
1032 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1033 }
1034 } else if (audio_sync_method > 1) {
1035 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1036 av_assert0(ost->audio_resample);
1037 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1038 delta, comp, enc->sample_rate);
1039 // 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));
1040 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1041 }
1042 }
1043 } else
1044 ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1045 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1046
1047 if (ost->audio_resample) {
1048 buftmp = audio_buf;
1049 size_out = audio_resample(ost->resample,
1050 (short *)buftmp, (short *)buf,
1051 size / (dec->channels * isize));
1052 size_out = size_out * enc->channels * osize;
1053 } else {
1054 buftmp = buf;
1055 size_out = size;
1056 }
1057
1058 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1059 const void *ibuf[6] = { buftmp };
1060 void *obuf[6] = { audio_buf };
1061 int istride[6] = { isize };
1062 int ostride[6] = { osize };
1063 int len = size_out / istride[0];
1064 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1065 printf("av_audio_convert() failed\n");
1066 if (exit_on_error)
1067 exit_program(1);
1068 return;
1069 }
1070 buftmp = audio_buf;
1071 size_out = len * osize;
1072 }
1073
1074 /* now encode as many frames as possible */
1075 if (enc->frame_size > 1) {
1076 /* output resampled raw samples */
1077 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1078 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1079 exit_program(1);
1080 }
1081 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1082
1083 frame_bytes = enc->frame_size * osize * enc->channels;
1084
1085 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1086 AVPacket pkt;
1087 av_init_packet(&pkt);
1088
1089 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1090
1091 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1092
1093 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1094 (short *)audio_buf);
1095 if (ret < 0) {
1096 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1097 exit_program(1);
1098 }
1099 audio_size += ret;
1100 pkt.stream_index = ost->index;
1101 pkt.data = audio_out;
1102 pkt.size = ret;
1103 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1104 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1105 pkt.flags |= AV_PKT_FLAG_KEY;
1106 write_frame(s, &pkt, ost);
1107
1108 ost->sync_opts += enc->frame_size;
1109 }
1110 } else {
1111 AVPacket pkt;
1112 av_init_packet(&pkt);
1113
1114 ost->sync_opts += size_out / (osize * enc->channels);
1115
1116 /* output a pcm frame */
1117 /* determine the size of the coded buffer */
1118 size_out /= osize;
1119 if (coded_bps)
1120 size_out = size_out * coded_bps / 8;
1121
1122 if (size_out > audio_out_size) {
1123 av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1124 exit_program(1);
1125 }
1126
1127 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1128 ret = avcodec_encode_audio(enc, audio_out, size_out,
1129 (short *)buftmp);
1130 if (ret < 0) {
1131 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1132 exit_program(1);
1133 }
1134 audio_size += ret;
1135 pkt.stream_index = ost->index;
1136 pkt.data = audio_out;
1137 pkt.size = ret;
1138 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1139 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1140 pkt.flags |= AV_PKT_FLAG_KEY;
1141 write_frame(s, &pkt, ost);
1142 }
1143 }
1144
1145 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1146 {
1147 AVCodecContext *dec;
1148 AVPicture *picture2;
1149 AVPicture picture_tmp;
1150 uint8_t *buf = 0;
1151
1152 dec = ist->st->codec;
1153
1154 /* deinterlace : must be done before any resize */
1155 if (do_deinterlace) {
1156 int size;
1157
1158 /* create temporary picture */
1159 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1160 buf = av_malloc(size);
1161 if (!buf)
1162 return;
1163
1164 picture2 = &picture_tmp;
1165 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1166
1167 if (avpicture_deinterlace(picture2, picture,
1168 dec->pix_fmt, dec->width, dec->height) < 0) {
1169 /* if error, do not deinterlace */
1170 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1171 av_free(buf);
1172 buf = NULL;
1173 picture2 = picture;
1174 }
1175 } else {
1176 picture2 = picture;
1177 }
1178
1179 if (picture != picture2)
1180 *picture = *picture2;
1181 *bufp = buf;
1182 }
1183
1184 static void do_subtitle_out(AVFormatContext *s,
1185 OutputStream *ost,
1186 InputStream *ist,
1187 AVSubtitle *sub,
1188 int64_t pts)
1189 {
1190 static uint8_t *subtitle_out = NULL;
1191 int subtitle_out_max_size = 1024 * 1024;
1192 int subtitle_out_size, nb, i;
1193 AVCodecContext *enc;
1194 AVPacket pkt;
1195
1196 if (pts == AV_NOPTS_VALUE) {
1197 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1198 if (exit_on_error)
1199 exit_program(1);
1200 return;
1201 }
1202
1203 enc = ost->st->codec;
1204
1205 if (!subtitle_out) {
1206 subtitle_out = av_malloc(subtitle_out_max_size);
1207 }
1208
1209 /* Note: DVB subtitle need one packet to draw them and one other
1210 packet to clear them */
1211 /* XXX: signal it in the codec context ? */
1212 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1213 nb = 2;
1214 else
1215 nb = 1;
1216
1217 for (i = 0; i < nb; i++) {
1218 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1219 // start_display_time is required to be 0
1220 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1221 sub->end_display_time -= sub->start_display_time;
1222 sub->start_display_time = 0;
1223 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1224 subtitle_out_max_size, sub);
1225 if (subtitle_out_size < 0) {
1226 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1227 exit_program(1);
1228 }
1229
1230 av_init_packet(&pkt);
1231 pkt.stream_index = ost->index;
1232 pkt.data = subtitle_out;
1233 pkt.size = subtitle_out_size;
1234 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1235 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1236 /* XXX: the pts correction is handled here. Maybe handling
1237 it in the codec would be better */
1238 if (i == 0)
1239 pkt.pts += 90 * sub->start_display_time;
1240 else
1241 pkt.pts += 90 * sub->end_display_time;
1242 }
1243 write_frame(s, &pkt, ost);
1244 }
1245 }
1246
1247 static int bit_buffer_size = 1024 * 256;
1248 static uint8_t *bit_buffer = NULL;
1249
1250 static void do_video_resample(OutputStream *ost,
1251 InputStream *ist,
1252 AVFrame *in_picture,
1253 AVFrame **out_picture)
1254 {
1255 int resample_changed = 0;
1256 AVCodecContext *dec = ist->st->codec;
1257 *out_picture = in_picture;
1258
1259 resample_changed = ost->resample_width != dec->width ||
1260 ost->resample_height != dec->height ||
1261 ost->resample_pix_fmt != dec->pix_fmt;
1262
1263 if (resample_changed) {
1264 av_log(NULL, AV_LOG_INFO,
1265 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1266 ist->file_index, ist->st->index,
1267 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1268 dec->width , dec->height , av_get_pix_fmt_name(dec->pix_fmt));
1269 if (!ost->video_resample)
1270 ost->video_resample = 1;
1271 }
1272
1273 #if !CONFIG_AVFILTER
1274 if (ost->video_resample) {
1275 *out_picture = &ost->pict_tmp;
1276 if (resample_changed) {
1277 /* initialize a new scaler context */
1278 sws_freeContext(ost->img_resample_ctx);
1279 ost->img_resample_ctx = sws_getContext(
1280 ist->st->codec->width,
1281 ist->st->codec->height,
1282 ist->st->codec->pix_fmt,
1283 ost->st->codec->width,
1284 ost->st->codec->height,
1285 ost->st->codec->pix_fmt,
1286 ost->sws_flags, NULL, NULL, NULL);
1287 if (ost->img_resample_ctx == NULL) {
1288 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1289 exit_program(1);
1290 }
1291 }
1292 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1293 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1294 }
1295 #else
1296 if (resample_changed) {
1297 avfilter_graph_free(&ost->graph);
1298 if (configure_video_filters(ist, ost)) {
1299 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1300 exit_program(1);
1301 }
1302 }
1303 #endif
1304 if (resample_changed) {
1305 ost->resample_width = dec->width;
1306 ost->resample_height = dec->height;
1307 ost->resample_pix_fmt = dec->pix_fmt;
1308 }
1309 }
1310
1311
1312 static void do_video_out(AVFormatContext *s,
1313 OutputStream *ost,
1314 InputStream *ist,
1315 AVFrame *in_picture,
1316 int *frame_size, float quality)
1317 {
1318 int nb_frames, i, ret, format_video_sync;
1319 AVFrame *final_picture;
1320 AVCodecContext *enc;
1321 double sync_ipts;
1322
1323 enc = ost->st->codec;
1324
1325 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1326
1327 /* by default, we output a single frame */
1328 nb_frames = 1;
1329
1330 *frame_size = 0;
1331
1332 format_video_sync = video_sync_method;
1333 if (format_video_sync < 0)
1334 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1335 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1336
1337 if (format_video_sync) {
1338 double vdelta = sync_ipts - ost->sync_opts;
1339 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1340 if (vdelta < -1.1)
1341 nb_frames = 0;
1342 else if (format_video_sync == 2) {
1343 if (vdelta <= -0.6) {
1344 nb_frames = 0;
1345 } else if (vdelta > 0.6)
1346 ost->sync_opts = lrintf(sync_ipts);
1347 } else if (vdelta > 1.1)
1348 nb_frames = lrintf(vdelta);
1349 //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);
1350 if (nb_frames == 0) {
1351 ++nb_frames_drop;
1352 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1353 } else if (nb_frames > 1) {
1354 nb_frames_dup += nb_frames - 1;
1355 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1356 }
1357 } else
1358 ost->sync_opts = lrintf(sync_ipts);
1359
1360 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1361 if (nb_frames <= 0)
1362 return;
1363
1364 do_video_resample(ost, ist, in_picture, &final_picture);
1365
1366 /* duplicates frame if needed */
1367 for (i = 0; i < nb_frames; i++) {
1368 AVPacket pkt;
1369 av_init_packet(&pkt);
1370 pkt.stream_index = ost->index;
1371
1372 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1373 enc->codec->id == CODEC_ID_RAWVIDEO) {
1374 /* raw pictures are written as AVPicture structure to
1375 avoid any copies. We support temporarily the older
1376 method. */
1377 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1378 enc->coded_frame->top_field_first = in_picture->top_field_first;
1379 pkt.data = (uint8_t *)final_picture;
1380 pkt.size = sizeof(AVPicture);
1381 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1382 pkt.flags |= AV_PKT_FLAG_KEY;
1383
1384 write_frame(s, &pkt, ost);
1385 } else {
1386 AVFrame big_picture;
1387
1388 big_picture = *final_picture;
1389 /* better than nothing: use input picture interlaced
1390 settings */
1391 big_picture.interlaced_frame = in_picture->interlaced_frame;
1392 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1393 if (ost->top_field_first == -1)
1394 big_picture.top_field_first = in_picture->top_field_first;
1395 else
1396 big_picture.top_field_first = !!ost->top_field_first;
1397 }
1398
1399 /* handles same_quant here. This is not correct because it may
1400 not be a global option */
1401 big_picture.quality = quality;
1402 if (!enc->me_threshold)
1403 big_picture.pict_type = 0;
1404 // big_picture.pts = AV_NOPTS_VALUE;
1405 big_picture.pts = ost->sync_opts;
1406 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1407 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1408 if (ost->forced_kf_index < ost->forced_kf_count &&
1409 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1410 big_picture.pict_type = AV_PICTURE_TYPE_I;
1411 ost->forced_kf_index++;
1412 }
1413 ret = avcodec_encode_video(enc,
1414 bit_buffer, bit_buffer_size,
1415 &big_picture);
1416 if (ret < 0) {
1417 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1418 exit_program(1);
1419 }
1420
1421 if (ret > 0) {
1422 pkt.data = bit_buffer;
1423 pkt.size = ret;
1424 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1425 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1426 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1427 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1428 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1429
1430 if (enc->coded_frame->key_frame)
1431 pkt.flags |= AV_PKT_FLAG_KEY;
1432 write_frame(s, &pkt, ost);
1433 *frame_size = ret;
1434 video_size += ret;
1435 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1436 // enc->frame_number-1, ret, enc->pict_type);
1437 /* if two pass, output log */
1438 if (ost->logfile && enc->stats_out) {
1439 fprintf(ost->logfile, "%s", enc->stats_out);
1440 }
1441 }
1442 }
1443 ost->sync_opts++;
1444 }
1445 }
1446
1447 static double psnr(double d)
1448 {
1449 return -10.0 * log(d) / log(10.0);
1450 }
1451
1452 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1453 int frame_size)
1454 {
1455 AVCodecContext *enc;
1456 int frame_number;
1457 double ti1, bitrate, avg_bitrate;
1458
1459 /* this is executed just the first time do_video_stats is called */
1460 if (!vstats_file) {
1461 vstats_file = fopen(vstats_filename, "w");
1462 if (!vstats_file) {
1463 perror("fopen");
1464 exit_program(1);
1465 }
1466 }
1467
1468 enc = ost->st->codec;
1469 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1470 frame_number = ost->frame_number;
1471 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1472 if (enc->flags&CODEC_FLAG_PSNR)
1473 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1474
1475 fprintf(vstats_file,"f_size= %6d ", frame_size);
1476 /* compute pts value */
1477 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1478 if (ti1 < 0.01)
1479 ti1 = 0.01;
1480
1481 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1482 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1483 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1484 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1485 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1486 }
1487 }
1488
1489 static void print_report(OutputFile *output_files,
1490 OutputStream *ost_table, int nb_ostreams,
1491 int is_last_report, int64_t timer_start)
1492 {
1493 char buf[1024];
1494 OutputStream *ost;
1495 AVFormatContext *oc;
1496 int64_t total_size;
1497 AVCodecContext *enc;
1498 int frame_number, vid, i;
1499 double bitrate, ti1, pts;
1500 static int64_t last_time = -1;
1501 static int qp_histogram[52];
1502
1503 if (!print_stats && !is_last_report)
1504 return;
1505
1506 if (!is_last_report) {
1507 int64_t cur_time;
1508 /* display the report every 0.5 seconds */
1509 cur_time = av_gettime();
1510 if (last_time == -1) {
1511 last_time = cur_time;
1512 return;
1513 }
1514 if ((cur_time - last_time) < 500000)
1515 return;
1516 last_time = cur_time;
1517 }
1518
1519
1520 oc = output_files[0].ctx;
1521
1522 total_size = avio_size(oc->pb);
1523 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1524 total_size = avio_tell(oc->pb);
1525
1526 buf[0] = '\0';
1527 ti1 = 1e10;
1528 vid = 0;
1529 for (i = 0; i < nb_ostreams; i++) {
1530 float q = -1;
1531 ost = &ost_table[i];
1532 enc = ost->st->codec;
1533 if (!ost->stream_copy && enc->coded_frame)
1534 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1535 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1536 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1537 }
1538 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1539 float t = (av_gettime() - timer_start) / 1000000.0;
1540
1541 frame_number = ost->frame_number;
1542 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1543 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1544 if (is_last_report)
1545 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1546 if (qp_hist) {
1547 int j;
1548 int qp = lrintf(q);
1549 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1550 qp_histogram[qp]++;
1551 for (j = 0; j < 32; j++)
1552 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1553 }
1554 if (enc->flags&CODEC_FLAG_PSNR) {
1555 int j;
1556 double error, error_sum = 0;
1557 double scale, scale_sum = 0;
1558 char type[3] = { 'Y','U','V' };
1559 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1560 for (j = 0; j < 3; j++) {
1561 if (is_last_report) {
1562 error = enc->error[j];
1563 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1564 } else {
1565 error = enc->coded_frame->error[j];
1566 scale = enc->width * enc->height * 255.0 * 255.0;
1567 }
1568 if (j)
1569 scale /= 4;
1570 error_sum += error;
1571 scale_sum += scale;
1572 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1573 }
1574 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1575 }
1576 vid = 1;
1577 }
1578 /* compute min output value */
1579 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1580 if ((pts < ti1) && (pts > 0))
1581 ti1 = pts;
1582 }
1583 if (ti1 < 0.01)
1584 ti1 = 0.01;
1585
1586 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1587
1588 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1589 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1590 (double)total_size / 1024, ti1, bitrate);
1591
1592 if (nb_frames_dup || nb_frames_drop)
1593 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1594 nb_frames_dup, nb_frames_drop);
1595
1596 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1597
1598 fflush(stderr);
1599
1600 if (is_last_report) {
1601 int64_t raw= audio_size + video_size + extra_size;
1602 av_log(NULL, AV_LOG_INFO, "\n");
1603 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1604 video_size / 1024.0,
1605 audio_size / 1024.0,
1606 extra_size / 1024.0,
1607 100.0 * (total_size - raw) / raw
1608 );
1609 }
1610 }
1611
1612 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1613 {
1614 int i, ret;
1615
1616 for (i = 0; i < nb_ostreams; i++) {
1617 OutputStream *ost = &ost_table[i];
1618 AVCodecContext *enc = ost->st->codec;
1619 AVFormatContext *os = output_files[ost->file_index].ctx;
1620
1621 if (!ost->encoding_needed)
1622 continue;
1623
1624 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1625 continue;
1626 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1627 continue;
1628
1629 for (;;) {
1630 AVPacket pkt;
1631 int fifo_bytes;
1632 av_init_packet(&pkt);
1633 pkt.stream_index = ost->index;
1634
1635 switch (ost->st->codec->codec_type) {
1636 case AVMEDIA_TYPE_AUDIO:
1637 fifo_bytes = av_fifo_size(ost->fifo);
1638 ret = 0;
1639 /* encode any samples remaining in fifo */
1640 if (fifo_bytes > 0) {
1641 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1642 int fs_tmp = enc->frame_size;
1643
1644 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1645 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1646 enc->frame_size = fifo_bytes / (osize * enc->channels);
1647 } else { /* pad */
1648 int frame_bytes = enc->frame_size*osize*enc->channels;
1649 if (allocated_audio_buf_size < frame_bytes)
1650 exit_program(1);
1651 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1652 }
1653
1654 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1655 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1656 ost->st->time_base.num, enc->sample_rate);
1657 enc->frame_size = fs_tmp;
1658 }
1659 if (ret <= 0) {
1660 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1661 }
1662 if (ret < 0) {
1663 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1664 exit_program(1);
1665 }
1666 audio_size += ret;
1667 pkt.flags |= AV_PKT_FLAG_KEY;
1668 break;
1669 case AVMEDIA_TYPE_VIDEO:
1670 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1671 if (ret < 0) {
1672 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1673 exit_program(1);
1674 }
1675 video_size += ret;
1676 if (enc->coded_frame && enc->coded_frame->key_frame)
1677 pkt.flags |= AV_PKT_FLAG_KEY;
1678 if (ost->logfile && enc->stats_out) {
1679 fprintf(ost->logfile, "%s", enc->stats_out);
1680 }
1681 break;
1682 default:
1683 ret = -1;
1684 }
1685
1686 if (ret <= 0)
1687 break;
1688 pkt.data = bit_buffer;
1689 pkt.size = ret;
1690 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1691 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1692 write_frame(os, &pkt, ost);
1693 }
1694 }
1695 }
1696
1697 /*
1698 * Check whether a packet from ist should be written into ost at this time
1699 */
1700 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1701 {
1702 OutputFile *of = &output_files[ost->file_index];
1703 int ist_index = ist - input_streams;
1704
1705 if (ost->source_index != ist_index)
1706 return 0;
1707
1708 if (of->start_time && ist->pts < of->start_time)
1709 return 0;
1710
1711 if (of->recording_time != INT64_MAX &&
1712 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1713 (AVRational){ 1, 1000000 }) >= 0) {
1714 ost->is_past_recording_time = 1;
1715 return 0;
1716 }
1717
1718 return 1;
1719 }
1720
1721 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1722 {
1723 OutputFile *of = &output_files[ost->file_index];
1724 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1725 AVPacket opkt;
1726
1727 av_init_packet(&opkt);
1728
1729 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1730 !ost->copy_initial_nonkeyframes)
1731 return;
1732
1733 /* force the input stream PTS */
1734 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1735 audio_size += pkt->size;
1736 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1737 video_size += pkt->size;
1738 ost->sync_opts++;
1739 }
1740
1741 opkt.stream_index = ost->index;
1742 if (pkt->pts != AV_NOPTS_VALUE)
1743 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1744 else
1745 opkt.pts = AV_NOPTS_VALUE;
1746
1747 if (pkt->dts == AV_NOPTS_VALUE)
1748 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1749 else
1750 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1751 opkt.dts -= ost_tb_start_time;
1752
1753 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1754 opkt.flags = pkt->flags;
1755
1756 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1757 if ( ost->st->codec->codec_id != CODEC_ID_H264
1758 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1759 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1760 ) {
1761 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1762 opkt.destruct = av_destruct_packet;
1763 } else {
1764 opkt.data = pkt->data;
1765 opkt.size = pkt->size;
1766 }
1767
1768 write_frame(of->ctx, &opkt, ost);
1769 ost->st->codec->frame_number++;
1770 av_free_packet(&opkt);
1771 }
1772
1773 static void rate_emu_sleep(InputStream *ist)
1774 {
1775 if (input_files[ist->file_index].rate_emu) {
1776 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1777 int64_t now = av_gettime() - ist->start;
1778 if (pts > now)
1779 usleep(pts - now);
1780 }
1781 }
1782
1783 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1784 {
1785 AVFrame *decoded_frame;
1786 AVCodecContext *avctx = ist->st->codec;
1787 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1788 int i, ret;
1789
1790 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1791 return AVERROR(ENOMEM);
1792 else
1793 avcodec_get_frame_defaults(ist->decoded_frame);
1794 decoded_frame = ist->decoded_frame;
1795
1796 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1797 if (ret < 0) {
1798 return ret;
1799 }
1800
1801 if (!*got_output) {
1802 /* no audio frame */
1803 return ret;
1804 }
1805
1806 /* if the decoder provides a pts, use it instead of the last packet pts.
1807 the decoder could be delaying output by a packet or more. */
1808 if (decoded_frame->pts != AV_NOPTS_VALUE)
1809 ist->next_pts = decoded_frame->pts;
1810
1811 /* increment next_pts to use for the case where the input stream does not
1812 have timestamps or there are multiple frames in the packet */
1813 ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1814 avctx->sample_rate;
1815
1816 // preprocess audio (volume)
1817 if (audio_volume != 256) {
1818 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1819 void *samples = decoded_frame->data[0];
1820 switch (avctx->sample_fmt) {
1821 case AV_SAMPLE_FMT_U8:
1822 {
1823 uint8_t *volp = samples;
1824 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1825 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1826 *volp++ = av_clip_uint8(v);
1827 }
1828 break;
1829 }
1830 case AV_SAMPLE_FMT_S16:
1831 {
1832 int16_t *volp = samples;
1833 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1834 int v = ((*volp) * audio_volume + 128) >> 8;
1835 *volp++ = av_clip_int16(v);
1836 }
1837 break;
1838 }
1839 case AV_SAMPLE_FMT_S32:
1840 {
1841 int32_t *volp = samples;
1842 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1843 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1844 *volp++ = av_clipl_int32(v);
1845 }
1846 break;
1847 }
1848 case AV_SAMPLE_FMT_FLT:
1849 {
1850 float *volp = samples;
1851 float scale = audio_volume / 256.f;
1852 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1853 *volp++ *= scale;
1854 }
1855 break;
1856 }
1857 case AV_SAMPLE_FMT_DBL:
1858 {
1859 double *volp = samples;
1860 double scale = audio_volume / 256.;
1861 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1862 *volp++ *= scale;
1863 }
1864 break;
1865 }
1866 default:
1867 av_log(NULL, AV_LOG_FATAL,
1868 "Audio volume adjustment on sample format %s is not supported.\n",
1869 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1870 exit_program(1);
1871 }
1872 }
1873
1874 rate_emu_sleep(ist);
1875
1876 for (i = 0; i < nb_output_streams; i++) {
1877 OutputStream *ost = &output_streams[i];
1878
1879 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1880 continue;
1881 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1882 }
1883
1884 return ret;
1885 }
1886
1887 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1888 {
1889 AVFrame *decoded_frame, *filtered_frame = NULL;
1890 void *buffer_to_free = NULL;
1891 int i, ret = 0;
1892 float quality;
1893 #if CONFIG_AVFILTER
1894 int frame_available = 1;
1895 #endif
1896
1897 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1898 return AVERROR(ENOMEM);
1899 else
1900 avcodec_get_frame_defaults(ist->decoded_frame);
1901 decoded_frame = ist->decoded_frame;
1902 pkt->pts = *pkt_pts;
1903 pkt->dts = ist->pts;
1904 *pkt_pts = AV_NOPTS_VALUE;
1905
1906 ret = avcodec_decode_video2(ist->st->codec,
1907 decoded_frame, got_output, pkt);
1908 if (ret < 0)
1909 return ret;
1910
1911 quality = same_quant ? decoded_frame->quality : 0;
1912 if (!*got_output) {
1913 /* no picture yet */
1914 return ret;
1915 }
1916 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1917 decoded_frame->pkt_dts);
1918 if (pkt->duration)
1919 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1920 else if (ist->st->codec->time_base.num != 0) {
1921 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1922 ist->st->codec->ticks_per_frame;
1923 ist->next_pts += ((int64_t)AV_TIME_BASE *
1924 ist->st->codec->time_base.num * ticks) /
1925 ist->st->codec->time_base.den;
1926 }
1927 pkt->size = 0;
1928 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1929
1930 rate_emu_sleep(ist);
1931
1932 for (i = 0; i < nb_output_streams; i++) {
1933 OutputStream *ost = &output_streams[i];
1934 int frame_size;
1935
1936 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1937 continue;
1938
1939 #if CONFIG_AVFILTER
1940 if (ist->st->sample_aspect_ratio.num)
1941 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1942 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1943 FrameBuffer *buf = decoded_frame->opaque;
1944 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1945 decoded_frame->data, decoded_frame->linesize,
1946 AV_PERM_READ | AV_PERM_PRESERVE,
1947 ist->st->codec->width, ist->st->codec->height,
1948 ist->st->codec->pix_fmt);
1949
1950 avfilter_copy_frame_props(fb, decoded_frame);
1951 fb->pts = ist->pts;
1952 fb->buf->priv = buf;
1953 fb->buf->free = filter_release_buffer;
1954
1955 buf->refcount++;
1956 av_buffersrc_buffer(ost->input_video_filter, fb);
1957 } else
1958 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
1959 ist->pts, decoded_frame->sample_aspect_ratio);
1960
1961 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1962 av_free(buffer_to_free);
1963 return AVERROR(ENOMEM);
1964 } else
1965 avcodec_get_frame_defaults(ist->filtered_frame);
1966 filtered_frame = ist->filtered_frame;
1967
1968 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1969 while (frame_available) {
1970 AVRational ist_pts_tb;
1971 if (ost->output_video_filter)
1972 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1973 if (ost->picref)
1974 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1975 if (ost->picref->video && !ost->frame_aspect_ratio)
1976 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1977 #else
1978 filtered_frame = decoded_frame;
1979 #endif
1980
1981 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1982 same_quant ? quality : ost->st->codec->global_quality);
1983 if (vstats_filename && frame_size)
1984 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1985 #if CONFIG_AVFILTER
1986 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1987 if (ost->picref)
1988 avfilter_unref_buffer(ost->picref);
1989 }
1990 #endif
1991 }
1992
1993 av_free(buffer_to_free);
1994 return ret;
1995 }
1996
1997 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1998 {
1999 AVSubtitle subtitle;
2000 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2001 &subtitle, got_output, pkt);
2002 if (ret < 0)
2003 return ret;
2004 if (!*got_output)
2005 return ret;
2006
2007 rate_emu_sleep(ist);
2008
2009 for (i = 0; i < nb_output_streams; i++) {
2010 OutputStream *ost = &output_streams[i];
2011
2012 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2013 continue;
2014
2015 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2016 }
2017
2018 avsubtitle_free(&subtitle);
2019 return ret;
2020 }
2021
2022 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2023 static int output_packet(InputStream *ist,
2024 OutputStream *ost_table, int nb_ostreams,
2025 const AVPacket *pkt)
2026 {
2027 int i;
2028 int got_output;
2029 int64_t pkt_pts = AV_NOPTS_VALUE;
2030 AVPacket avpkt;
2031
2032 if (ist->next_pts == AV_NOPTS_VALUE)
2033 ist->next_pts = ist->pts;
2034
2035 if (pkt == NULL) {
2036 /* EOF handling */
2037 av_init_packet(&avpkt);
2038 avpkt.data = NULL;
2039 avpkt.size = 0;
2040 goto handle_eof;
2041 } else {
2042 avpkt = *pkt;
2043 }
2044
2045 if (pkt->dts != AV_NOPTS_VALUE)
2046 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2047 if (pkt->pts != AV_NOPTS_VALUE)
2048 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2049
2050 // while we have more to decode or while the decoder did output something on EOF
2051 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2052 int ret = 0;
2053 handle_eof:
2054
2055 ist->pts = ist->next_pts;
2056
2057 if (avpkt.size && avpkt.size != pkt->size) {
2058 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2059 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2060 ist->showed_multi_packet_warning = 1;
2061 }
2062
2063 switch (ist->st->codec->codec_type) {
2064 case AVMEDIA_TYPE_AUDIO:
2065 ret = transcode_audio (ist, &avpkt, &got_output);
2066 break;
2067 case AVMEDIA_TYPE_VIDEO:
2068 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2069 break;
2070 case AVMEDIA_TYPE_SUBTITLE:
2071 ret = transcode_subtitles(ist, &avpkt, &got_output);
2072 break;
2073 default:
2074 return -1;
2075 }
2076
2077 if (ret < 0)
2078 return ret;
2079 // touch data and size only if not EOF
2080 if (pkt) {
2081 avpkt.data += ret;
2082 avpkt.size -= ret;
2083 }
2084 if (!got_output) {
2085 continue;
2086 }
2087 }
2088
2089 /* handle stream copy */
2090 if (!ist->decoding_needed) {
2091 rate_emu_sleep(ist);
2092 ist->pts = ist->next_pts;
2093 switch (ist->st->codec->codec_type) {
2094 case AVMEDIA_TYPE_AUDIO:
2095 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2096 ist->st->codec->sample_rate;
2097 break;
2098 case AVMEDIA_TYPE_VIDEO:
2099 if (ist->st->codec->time_base.num != 0) {
2100 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2101 ist->next_pts += ((int64_t)AV_TIME_BASE *
2102 ist->st->codec->time_base.num * ticks) /
2103 ist->st->codec->time_base.den;
2104 }
2105 break;
2106 }
2107 }
2108 for (i = 0; pkt && i < nb_ostreams; i++) {
2109 OutputStream *ost = &ost_table[i];
2110
2111 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2112 continue;
2113
2114 do_streamcopy(ist, ost, pkt);
2115 }
2116
2117 return 0;
2118 }
2119
2120 static void print_sdp(OutputFile *output_files, int n)
2121 {
2122 char sdp[2048];
2123 int i;
2124 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2125
2126 if (!avc)
2127 exit_program(1);
2128 for (i = 0; i < n; i++)
2129 avc[i] = output_files[i].ctx;
2130
2131 av_sdp_create(avc, n, sdp, sizeof(sdp));
2132 printf("SDP:\n%s\n", sdp);
2133 fflush(stdout);
2134 av_freep(&avc);
2135 }
2136
2137 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2138 char *error, int error_len)
2139 {
2140 int i;
2141 InputStream *ist = &input_streams[ist_index];
2142 if (ist->decoding_needed) {
2143 AVCodec *codec = ist->dec;
2144 if (!codec) {
2145 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2146 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2147 return AVERROR(EINVAL);
2148 }
2149
2150 /* update requested sample format for the decoder based on the
2151 corresponding encoder sample format */
2152 for (i = 0; i < nb_output_streams; i++) {
2153 OutputStream *ost = &output_streams[i];
2154 if (ost->source_index == ist_index) {
2155 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2156 break;
2157 }
2158 }
2159
2160 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2161 ist->st->codec->get_buffer = codec_get_buffer;
2162 ist->st->codec->release_buffer = codec_release_buffer;
2163 ist->st->codec->opaque = ist;
2164 }
2165
2166 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2167 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2168 ist->file_index, ist->st->index);
2169 return AVERROR(EINVAL);
2170 }
2171 assert_codec_experimental(ist->st->codec, 0);
2172 assert_avoptions(ist->opts);
2173 }
2174
2175 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;
2176 ist->next_pts = AV_NOPTS_VALUE;
2177 init_pts_correction(&ist->pts_ctx);
2178 ist->is_start = 1;
2179
2180 return 0;
2181 }
2182
2183 static int transcode_init(OutputFile *output_files,
2184 int nb_output_files,
2185 InputFile *input_files,
2186 int nb_input_files)
2187 {
2188 int ret = 0, i, j, k;
2189 AVFormatContext *oc;
2190 AVCodecContext *codec, *icodec;
2191 OutputStream *ost;
2192 InputStream *ist;
2193 char error[1024];
2194 int want_sdp = 1;
2195
2196 /* init framerate emulation */
2197 for (i = 0; i < nb_input_files; i++) {
2198 InputFile *ifile = &input_files[i];
2199 if (ifile->rate_emu)
2200 for (j = 0; j < ifile->nb_streams; j++)
2201 input_streams[j + ifile->ist_index].start = av_gettime();
2202 }
2203
2204 /* output stream init */
2205 for (i = 0; i < nb_output_files; i++) {
2206 oc = output_files[i].ctx;
2207 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2208 av_dump_format(oc, i, oc->filename, 1);
2209 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2210 return AVERROR(EINVAL);
2211 }
2212 }
2213
2214 /* for each output stream, we compute the right encoding parameters */
2215 for (i = 0; i < nb_output_streams; i++) {
2216 ost = &output_streams[i];
2217 oc = output_files[ost->file_index].ctx;
2218 ist = &input_streams[ost->source_index];
2219
2220 if (ost->attachment_filename)
2221 continue;
2222
2223 codec = ost->st->codec;
2224 icodec = ist->st->codec;
2225
2226 ost->st->disposition = ist->st->disposition;
2227 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2228 codec->chroma_sample_location = icodec->chroma_sample_location;
2229
2230 if (ost->stream_copy) {
2231 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2232
2233 if (extra_size > INT_MAX) {
2234 return AVERROR(EINVAL);
2235 }
2236
2237 /* if stream_copy is selected, no need to decode or encode */
2238 codec->codec_id = icodec->codec_id;
2239 codec->codec_type = icodec->codec_type;
2240
2241 if (!codec->codec_tag) {
2242 if (!oc->oformat->codec_tag ||
2243 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2244 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2245 codec->codec_tag = icodec->codec_tag;
2246 }
2247
2248 codec->bit_rate = icodec->bit_rate;
2249 codec->rc_max_rate = icodec->rc_max_rate;
2250 codec->rc_buffer_size = icodec->rc_buffer_size;
2251 codec->field_order = icodec->field_order;
2252 codec->extradata = av_mallocz(extra_size);
2253 if (!codec->extradata) {
2254 return AVERROR(ENOMEM);
2255 }
2256 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2257 codec->extradata_size = icodec->extradata_size;
2258 if (!copy_tb) {
2259 codec->time_base = icodec->time_base;
2260 codec->time_base.num *= icodec->ticks_per_frame;
2261 av_reduce(&codec->time_base.num, &codec->time_base.den,
2262 codec->time_base.num, codec->time_base.den, INT_MAX);
2263 } else
2264 codec->time_base = ist->st->time_base;
2265
2266 switch (codec->codec_type) {
2267 case AVMEDIA_TYPE_AUDIO:
2268 if (audio_volume != 256) {
2269 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2270 exit_program(1);
2271 }
2272 codec->channel_layout = icodec->channel_layout;
2273 codec->sample_rate = icodec->sample_rate;
2274 codec->channels = icodec->channels;
2275 codec->frame_size = icodec->frame_size;
2276 codec->audio_service_type = icodec->audio_service_type;
2277 codec->block_align = icodec->block_align;
2278 break;
2279 case AVMEDIA_TYPE_VIDEO:
2280 codec->pix_fmt = icodec->pix_fmt;
2281 codec->width = icodec->width;
2282 codec->height = icodec->height;
2283 codec->has_b_frames = icodec->has_b_frames;
2284 if (!codec->sample_aspect_ratio.num) {
2285 codec->sample_aspect_ratio =
2286 ost->st->sample_aspect_ratio =
2287 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2288 ist->st->codec->sample_aspect_ratio.num ?
2289 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2290 }
2291 break;
2292 case AVMEDIA_TYPE_SUBTITLE:
2293 codec->width = icodec->width;
2294 codec->height = icodec->height;
2295 break;
2296 case AVMEDIA_TYPE_DATA:
2297 case AVMEDIA_TYPE_ATTACHMENT:
2298 break;
2299 default:
2300 abort();
2301 }
2302 } else {
2303 if (!ost->enc)
2304 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2305
2306 ist->decoding_needed = 1;
2307 ost->encoding_needed = 1;
2308
2309 switch (codec->codec_type) {
2310 case AVMEDIA_TYPE_AUDIO:
2311 ost->fifo = av_fifo_alloc(1024);
2312 if (!ost->fifo) {
2313 return AVERROR(ENOMEM);
2314 }
2315 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2316
2317 if (!codec->sample_rate)
2318 codec->sample_rate = icodec->sample_rate;
2319 choose_sample_rate(ost->st, ost->enc);
2320 codec->time_base = (AVRational){ 1, codec->sample_rate };
2321
2322 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2323 codec->sample_fmt = icodec->sample_fmt;
2324 choose_sample_fmt(ost->st, ost->enc);
2325
2326 if (!codec->channels)
2327 codec->channels = icodec->channels;
2328 codec->channel_layout = icodec->channel_layout;
2329 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2330 codec->channel_layout = 0;
2331
2332 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2333 icodec->request_channels = codec-> channels;
2334 ost->resample_sample_fmt = icodec->sample_fmt;
2335 ost->resample_sample_rate = icodec->sample_rate;
2336 ost->resample_channels = icodec->channels;
2337 break;
2338 case AVMEDIA_TYPE_VIDEO:
2339 if (codec->pix_fmt == PIX_FMT_NONE)
2340 codec->pix_fmt = icodec->pix_fmt;
2341 choose_pixel_fmt(ost->st, ost->enc);
2342
2343 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2344 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2345 exit_program(1);
2346 }
2347
2348 if (!codec->width || !codec->height) {
2349 codec->width = icodec->width;
2350 codec->height = icodec->height;
2351 }
2352
2353 ost->video_resample = codec->width != icodec->width ||
2354 codec->height != icodec->height ||
2355 codec->pix_fmt != icodec->pix_fmt;
2356 if (ost->video_resample) {
2357 #if !CONFIG_AVFILTER
2358 avcodec_get_frame_defaults(&ost->pict_tmp);
2359 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2360 codec->width, codec->height)) {
2361 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2362 exit_program(1);
2363 }
2364 ost->img_resample_ctx = sws_getContext(
2365 icodec->width,
2366 icodec->height,
2367 icodec->pix_fmt,
2368 codec->width,
2369 codec->height,
2370 codec->pix_fmt,
2371 ost->sws_flags, NULL, NULL, NULL);
2372 if (ost->img_resample_ctx == NULL) {
2373 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2374 exit_program(1);
2375 }
2376 #endif
2377 codec->bits_per_raw_sample = 0;
2378 }
2379
2380 ost->resample_height = icodec->height;
2381 ost->resample_width = icodec->width;
2382 ost->resample_pix_fmt = icodec->pix_fmt;
2383
2384 if (!ost->frame_rate.num)
2385 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2386 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2387 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2388 ost->frame_rate = ost->enc->supported_framerates[idx];
2389 }
2390 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2391
2392 #if CONFIG_AVFILTER
2393 if (configure_video_filters(ist, ost)) {
2394 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2395 exit(1);
2396 }
2397 #endif
2398 break;
2399 case AVMEDIA_TYPE_SUBTITLE:
2400 break;
2401 default:
2402 abort();
2403 break;
2404 }
2405 /* two pass mode */
2406 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2407 char logfilename[1024];
2408 FILE *f;
2409
2410 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2411 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2412 i);
2413 if (codec->flags & CODEC_FLAG_PASS1) {
2414 f = fopen(logfilename, "wb");
2415 if (!f) {
2416 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2417 logfilename, strerror(errno));
2418 exit_program(1);
2419 }
2420 ost->logfile = f;
2421 } else {
2422 char *logbuffer;
2423 size_t logbuffer_size;
2424 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2425 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2426 logfilename);
2427 exit_program(1);
2428 }
2429 codec->stats_in = logbuffer;
2430 }
2431 }
2432 }
2433 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2434 int size = codec->width * codec->height;
2435 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2436 }
2437 }
2438
2439 if (!bit_buffer)
2440 bit_buffer = av_malloc(bit_buffer_size);
2441 if (!bit_buffer) {
2442 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2443 bit_buffer_size);
2444 return AVERROR(ENOMEM);
2445 }
2446
2447 /* open each encoder */
2448 for (i = 0; i < nb_output_streams; i++) {
2449 ost = &output_streams[i];
2450 if (ost->encoding_needed) {
2451 AVCodec *codec = ost->enc;
2452 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2453 if (!codec) {
2454 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2455 ost->st->codec->codec_id, ost->file_index, ost->index);
2456 ret = AVERROR(EINVAL);
2457 goto dump_format;
2458 }
2459 if (dec->subtitle_header) {
2460 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2461 if (!ost->st->codec->subtitle_header) {
2462 ret = AVERROR(ENOMEM);
2463 goto dump_format;
2464 }
2465 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2466 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2467 }
2468 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2469 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2470 ost->file_index, ost->index);
2471 ret = AVERROR(EINVAL);
2472 goto dump_format;
2473 }
2474 assert_codec_experimental(ost->st->codec, 1);
2475 assert_avoptions(ost->opts);
2476 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2477 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2478 "It takes bits/s as argument, not kbits/s\n");
2479 extra_size += ost->st->codec->extradata_size;
2480
2481 if (ost->st->codec->me_threshold)
2482 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2483 }
2484 }
2485
2486 /* init input streams */
2487 for (i = 0; i < nb_input_streams; i++)
2488 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2489 goto dump_format;
2490
2491 /* discard unused programs */
2492 for (i = 0; i < nb_input_files; i++) {
2493 InputFile *ifile = &input_files[i];
2494 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2495 AVProgram *p = ifile->ctx->programs[j];
2496 int discard = AVDISCARD_ALL;
2497
2498 for (k = 0; k < p->nb_stream_indexes; k++)
2499 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2500 discard = AVDISCARD_DEFAULT;
2501 break;
2502 }
2503 p->discard = discard;
2504 }
2505 }
2506
2507 /* open files and write file headers */
2508 for (i = 0; i < nb_output_files; i++) {
2509 oc = output_files[i].ctx;
2510 oc->interrupt_callback = int_cb;
2511 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2512 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2513 ret = AVERROR(EINVAL);
2514 goto dump_format;
2515 }
2516 assert_avoptions(output_files[i].opts);
2517 if (strcmp(oc->oformat->name, "rtp")) {
2518 want_sdp = 0;
2519 }
2520 }
2521
2522 dump_format:
2523 /* dump the file output parameters - cannot be done before in case
2524 of stream copy */
2525 for (i = 0; i < nb_output_files; i++) {
2526 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2527 }
2528
2529 /* dump the stream mapping */
2530 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2531 for (i = 0; i < nb_output_streams; i++) {
2532 ost = &output_streams[i];
2533
2534 if (ost->attachment_filename) {
2535 /* an attached file */
2536 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2537 ost->attachment_filename, ost->file_index, ost->index);
2538 continue;
2539 }
2540 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2541 input_streams[ost->source_index].file_index,
2542 input_streams[ost->source_index].st->index,
2543 ost->file_index,
2544 ost->index);
2545 if (ost->sync_ist != &input_streams[ost->source_index])
2546 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2547 ost->sync_ist->file_index,
2548 ost->sync_ist->st->index);
2549 if (ost->stream_copy)
2550 av_log(NULL, AV_LOG_INFO, " (copy)");
2551 else
2552 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2553 input_streams[ost->source_index].dec->name : "?",
2554 ost->enc ? ost->enc->name : "?");
2555 av_log(NULL, AV_LOG_INFO, "\n");
2556 }
2557
2558 if (ret) {
2559 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2560 return ret;
2561 }
2562
2563 if (want_sdp) {
2564 print_sdp(output_files, nb_output_files);
2565 }
2566
2567 return 0;
2568 }
2569
2570 /*
2571 * The following code is the main loop of the file converter
2572 */
2573 static int transcode(OutputFile *output_files,
2574 int nb_output_files,
2575 InputFile *input_files,
2576 int nb_input_files)
2577 {
2578 int ret, i;
2579 AVFormatContext *is, *os;
2580 OutputStream *ost;
2581 InputStream *ist;
2582 uint8_t *no_packet;
2583 int no_packet_count = 0;
2584 int64_t timer_start;
2585
2586 if (!(no_packet = av_mallocz(nb_input_files)))
2587 exit_program(1);
2588
2589 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2590 if (ret < 0)
2591 goto fail;
2592
2593 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2594 term_init();
2595
2596 timer_start = av_gettime();
2597
2598 for (; received_sigterm == 0;) {
2599 int file_index, ist_index;
2600 AVPacket pkt;
2601 int64_t ipts_min;
2602 double opts_min;
2603
2604 ipts_min = INT64_MAX;
2605 opts_min = 1e100;
2606
2607 /* select the stream that we must read now by looking at the
2608 smallest output pts */
2609 file_index = -1;
2610 for (i = 0; i < nb_output_streams; i++) {
2611 OutputFile *of;
2612 int64_t ipts;
2613 double opts;
2614 ost = &output_streams[i];
2615 of = &output_files[ost->file_index];
2616 os = output_files[ost->file_index].ctx;
2617 ist = &input_streams[ost->source_index];
2618 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2619 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2620 continue;
2621 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2622 ipts = ist->pts;
2623 if (!input_files[ist->file_index].eof_reached) {
2624 if (ipts < ipts_min) {
2625 ipts_min = ipts;
2626 if (input_sync)
2627 file_index = ist->file_index;
2628 }
2629 if (opts < opts_min) {
2630 opts_min = opts;
2631 if (!input_sync) file_index = ist->file_index;
2632 }
2633 }
2634 if (ost->frame_number >= ost->max_frames) {
2635 int j;
2636 for (j = 0; j < of->ctx->nb_streams; j++)
2637 output_streams[of->ost_index + j].is_past_recording_time = 1;
2638 continue;
2639 }
2640 }
2641 /* if none, if is finished */
2642 if (file_index < 0) {
2643 if (no_packet_count) {
2644 no_packet_count = 0;
2645 memset(no_packet, 0, nb_input_files);
2646 usleep(10000);
2647 continue;
2648 }
2649 break;
2650 }
2651
2652 /* read a frame from it and output it in the fifo */
2653 is = input_files[file_index].ctx;
2654 ret = av_read_frame(is, &pkt);
2655 if (ret == AVERROR(EAGAIN)) {
2656 no_packet[file_index] = 1;
2657 no_packet_count++;
2658 continue;
2659 }
2660 if (ret < 0) {
2661 input_files[file_index].eof_reached = 1;
2662 if (opt_shortest)
2663 break;
2664 else
2665 continue;
2666 }
2667
2668 no_packet_count = 0;
2669 memset(no_packet, 0, nb_input_files);
2670
2671 if (do_pkt_dump) {
2672 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2673 is->streams[pkt.stream_index]);
2674 }
2675 /* the following test is needed in case new streams appear
2676 dynamically in stream : we ignore them */
2677 if (pkt.stream_index >= input_files[file_index].nb_streams)
2678 goto discard_packet;
2679 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2680 ist = &input_streams[ist_index];
2681 if (ist->discard)
2682 goto discard_packet;
2683
2684 if (pkt.dts != AV_NOPTS_VALUE)
2685 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2686 if (pkt.pts != AV_NOPTS_VALUE)
2687 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2688
2689 if (pkt.pts != AV_NOPTS_VALUE)
2690 pkt.pts *= ist->ts_scale;
2691 if (pkt.dts != AV_NOPTS_VALUE)
2692 pkt.dts *= ist->ts_scale;
2693
2694 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2695 // ist->next_pts,
2696 // pkt.dts, input_files[ist->file_index].ts_offset,
2697 // ist->st->codec->codec_type);
2698 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2699 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2700 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2701 int64_t delta = pkt_dts - ist->next_pts;
2702 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2703 input_files[ist->file_index].ts_offset -= delta;
2704 av_log(NULL, AV_LOG_DEBUG,
2705 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2706 delta, input_files[ist->file_index].ts_offset);
2707 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2708 if (pkt.pts != AV_NOPTS_VALUE)
2709 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2710 }
2711 }
2712
2713 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2714 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2715
2716 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2717 ist->file_index, ist->st->index);
2718 if (exit_on_error)
2719 exit_program(1);
2720 av_free_packet(&pkt);
2721 continue;
2722 }
2723
2724 discard_packet:
2725 av_free_packet(&pkt);
2726
2727 /* dump report by using the output first video and audio streams */
2728 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2729 }
2730
2731 /* at the end of stream, we must flush the decoder buffers */
2732 for (i = 0; i < nb_input_streams; i++) {
2733 ist = &input_streams[i];
2734 if (ist->decoding_needed) {
2735 output_packet(ist, output_streams, nb_output_streams, NULL);
2736 }
2737 }
2738 flush_encoders(output_streams, nb_output_streams);
2739
2740 term_exit();
2741
2742 /* write the trailer if needed and close file */
2743 for (i = 0; i < nb_output_files; i++) {
2744 os = output_files[i].ctx;
2745 av_write_trailer(os);
2746 }
2747
2748 /* dump report by using the first video and audio streams */
2749 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2750
2751 /* close each encoder */
2752 for (i = 0; i < nb_output_streams; i++) {
2753 ost = &output_streams[i];
2754 if (ost->encoding_needed) {
2755 av_freep(&ost->st->codec->stats_in);
2756 avcodec_close(ost->st->codec);
2757 }
2758 #if CONFIG_AVFILTER
2759 avfilter_graph_free(&ost->graph);
2760 #endif
2761 }
2762
2763 /* close each decoder */
2764 for (i = 0; i < nb_input_streams; i++) {
2765 ist = &input_streams[i];
2766 if (ist->decoding_needed) {
2767 avcodec_close(ist->st->codec);
2768 }
2769 }
2770
2771 /* finished ! */
2772 ret = 0;
2773
2774 fail:
2775 av_freep(&bit_buffer);
2776 av_freep(&no_packet);
2777
2778 if (output_streams) {
2779 for (i = 0; i < nb_output_streams; i++) {
2780 ost = &output_streams[i];
2781 if (ost) {
2782 if (ost->stream_copy)
2783 av_freep(&ost->st->codec->extradata);
2784 if (ost->logfile) {
2785 fclose(ost->logfile);
2786 ost->logfile = NULL;
2787 }
2788 av_fifo_free(ost->fifo); /* works even if fifo is not
2789 initialized but set to zero */
2790 av_freep(&ost->st->codec->subtitle_header);
2791 av_free(ost->pict_tmp.data[0]);
2792 av_free(ost->forced_kf_pts);
2793 if (ost->video_resample)
2794 sws_freeContext(ost->img_resample_ctx);
2795 if (ost->resample)
2796 audio_resample_close(ost->resample);
2797 if (ost->reformat_ctx)
2798 av_audio_convert_free(ost->reformat_ctx);
2799 av_dict_free(&ost->opts);
2800 }
2801 }
2802 }
2803 return ret;
2804 }
2805
2806 static double parse_frame_aspect_ratio(const char *arg)
2807 {
2808 int x = 0, y = 0;
2809 double ar = 0;
2810 const char *p;
2811 char *end;
2812
2813 p = strchr(arg, ':');
2814 if (p) {
2815 x = strtol(arg, &end, 10);
2816 if (end == p)
2817 y = strtol(end + 1, &end, 10);
2818 if (x > 0 && y > 0)
2819 ar = (double)x / (double)y;
2820 } else
2821 ar = strtod(arg, NULL);
2822
2823 if (!ar) {
2824 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2825 exit_program(1);
2826 }
2827 return ar;
2828 }
2829
2830 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2831 {
2832 return parse_option(o, "codec:a", arg, options);
2833 }
2834
2835 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2836 {
2837 return parse_option(o, "codec:v", arg, options);
2838 }
2839
2840 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2841 {
2842 return parse_option(o, "codec:s", arg, options);
2843 }
2844
2845 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2846 {
2847 return parse_option(o, "codec:d", arg, options);
2848 }
2849
2850 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2851 {
2852 StreamMap *m = NULL;
2853 int i, negative = 0, file_idx;
2854 int sync_file_idx = -1, sync_stream_idx;
2855 char *p, *sync;
2856 char *map;
2857
2858 if (*arg == '-') {
2859 negative = 1;
2860 arg++;
2861 }
2862 map = av_strdup(arg);
2863
2864 /* parse sync stream first, just pick first matching stream */
2865 if (sync = strchr(map, ',')) {
2866 *sync = 0;
2867 sync_file_idx = strtol(sync + 1, &sync, 0);
2868 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2869 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2870 exit_program(1);
2871 }
2872 if (*sync)
2873 sync++;
2874 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2875 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2876 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2877 sync_stream_idx = i;
2878 break;
2879 }
2880 if (i == input_files[sync_file_idx].nb_streams) {
2881 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2882 "match any streams.\n", arg);
2883 exit_program(1);
2884 }
2885 }
2886
2887
2888 file_idx = strtol(map, &p, 0);
2889 if (file_idx >= nb_input_files || file_idx < 0) {
2890 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2891 exit_program(1);
2892 }
2893 if (negative)
2894 /* disable some already defined maps */
2895 for (i = 0; i < o->nb_stream_maps; i++) {
2896 m = &o->stream_maps[i];
2897 if (file_idx == m->file_index &&
2898 check_stream_specifier(input_files[m->file_index].ctx,
2899 input_files[m->file_index].ctx->streams[m->stream_index],
2900 *p == ':' ? p + 1 : p) > 0)
2901 m->disabled = 1;
2902 }
2903 else
2904 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2905 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2906 *p == ':' ? p + 1 : p) <= 0)
2907 continue;
2908 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2909 &o->nb_stream_maps, o->nb_stream_maps + 1);
2910 m = &o->stream_maps[o->nb_stream_maps - 1];
2911
2912 m->file_index = file_idx;
2913 m->stream_index = i;
2914
2915 if (sync_file_idx >= 0) {
2916 m->sync_file_index = sync_file_idx;
2917 m->sync_stream_index = sync_stream_idx;
2918 } else {
2919 m->sync_file_index = file_idx;
2920 m->sync_stream_index = i;
2921 }
2922 }
2923
2924 if (!m) {
2925 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2926 exit_program(1);
2927 }
2928
2929 av_freep(&map);
2930 return 0;
2931 }
2932
2933 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2934 {
2935 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2936 &o->nb_attachments, o->nb_attachments + 1);
2937 o->attachments[o->nb_attachments - 1] = arg;
2938 return 0;
2939 }
2940
2941 /**
2942 * Parse a metadata specifier in arg.
2943 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2944 * @param index for type c/p, chapter/program index is written here
2945 * @param stream_spec for type s, the stream specifier is written here
2946 */
2947 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2948 {
2949 if (*arg) {
2950 *type = *arg;
2951 switch (*arg) {
2952 case 'g':
2953 break;
2954 case 's':
2955 if (*(++arg) && *arg != ':') {
2956 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2957 exit_program(1);
2958 }
2959 *stream_spec = *arg == ':' ? arg + 1 : "";
2960 break;
2961 case 'c':
2962 case 'p':
2963 if (*(++arg) == ':')
2964 *index = strtol(++arg, NULL, 0);
2965 break;
2966 default:
2967 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2968 exit_program(1);
2969 }
2970 } else
2971 *type = 'g';
2972 }
2973
2974 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2975 {
2976 AVDictionary **meta_in = NULL;
2977 AVDictionary **meta_out;
2978 int i, ret = 0;
2979 char type_in, type_out;
2980 const char *istream_spec = NULL, *ostream_spec = NULL;
2981 int idx_in = 0, idx_out = 0;
2982
2983 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
2984 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2985
2986 if (type_in == 'g' || type_out == 'g')
2987 o->metadata_global_manual = 1;
2988 if (type_in == 's' || type_out == 's')
2989 o->metadata_streams_manual = 1;
2990 if (type_in == 'c' || type_out == 'c')
2991 o->metadata_chapters_manual = 1;
2992
2993 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2994 if ((index) < 0 || (index) >= (nb_elems)) {\
2995 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
2996 (desc), (index));\
2997 exit_program(1);\
2998 }
2999
3000 #define SET_DICT(type, meta, context, index)\
3001 switch (type) {\
3002 case 'g':\
3003 meta = &context->metadata;\
3004 break;\
3005 case 'c':\
3006 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3007 meta = &context->chapters[index]->metadata;\
3008 break;\
3009 case 'p':\
3010 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3011 meta = &context->programs[index]->metadata;\
3012 break;\
3013 }\
3014
3015 SET_DICT(type_in, meta_in, ic, idx_in);
3016 SET_DICT(type_out, meta_out, oc, idx_out);
3017
3018 /* for input streams choose first matching stream */
3019 if (type_in == 's') {
3020 for (i = 0; i < ic->nb_streams; i++) {
3021 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3022 meta_in = &ic->streams[i]->metadata;
3023 break;
3024 } else if (ret < 0)
3025 exit_program(1);
3026 }
3027 if (!meta_in) {
3028 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3029 exit_program(1);
3030 }
3031 }
3032
3033 if (type_out == 's') {
3034 for (i = 0; i < oc->nb_streams; i++) {
3035 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3036 meta_out = &oc->streams[i]->metadata;
3037 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3038 } else if (ret < 0)
3039 exit_program(1);
3040 }
3041 } else
3042 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3043
3044 return 0;
3045 }
3046
3047 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3048 {
3049 const char *codec_string = encoder ? "encoder" : "decoder";
3050 AVCodec *codec;
3051
3052 codec = encoder ?
3053 avcodec_find_encoder_by_name(name) :
3054 avcodec_find_decoder_by_name(name);
3055 if (!codec) {
3056 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3057 exit_program(1);
3058 }
3059 if (codec->type != type) {
3060 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3061 exit_program(1);
3062 }
3063 return codec;
3064 }
3065
3066 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3067 {
3068 char *codec_name = NULL;
3069
3070 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3071 if (codec_name) {
3072 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3073 st->codec->codec_id = codec->id;
3074 return codec;
3075 } else
3076 return avcodec_find_decoder(st->codec->codec_id);
3077 }
3078
3079 /**
3080 * Add all the streams from the given input file to the global
3081 * list of input streams.
3082 */
3083 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3084 {
3085 int i;
3086
3087 for (i = 0; i < ic->nb_streams; i++) {
3088 AVStream *st = ic->streams[i];
3089 AVCodecContext *dec = st->codec;
3090 InputStream *ist;
3091
3092 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3093 ist = &input_streams[nb_input_streams - 1];
3094 ist->st = st;
3095 ist->file_index = nb_input_files;
3096 ist->discard = 1;
3097 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3098
3099 ist->ts_scale = 1.0;
3100 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3101
3102 ist->dec = choose_decoder(o, ic, st);
3103
3104 switch (dec->codec_type) {
3105 case AVMEDIA_TYPE_AUDIO:
3106 if (o->audio_disable)
3107 st->discard = AVDISCARD_ALL;
3108 break;
3109 case AVMEDIA_TYPE_VIDEO:
3110 if (dec->lowres) {
3111 dec->flags |= CODEC_FLAG_EMU_EDGE;
3112 dec->height >>= dec->lowres;
3113 dec->width >>= dec->lowres;
3114 }
3115
3116 if (o->video_disable)
3117 st->discard = AVDISCARD_ALL;
3118 else if (video_discard)
3119 st->discard = video_discard;
3120 break;
3121 case AVMEDIA_TYPE_DATA:
3122 break;
3123 case AVMEDIA_TYPE_SUBTITLE:
3124 if (o->subtitle_disable)
3125 st->discard = AVDISCARD_ALL;
3126 break;
3127 case AVMEDIA_TYPE_ATTACHMENT:
3128 case AVMEDIA_TYPE_UNKNOWN:
3129 break;
3130 default:
3131 abort();
3132 }
3133 }
3134 }
3135
3136 static void assert_file_overwrite(const char *filename)
3137 {
3138 if (!file_overwrite &&
3139 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3140 av_strstart(filename, "file:", NULL))) {
3141 if (avio_check(filename, 0) == 0) {
3142 if (!using_stdin) {
3143 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3144 fflush(stderr);
3145 if (!read_yesno()) {
3146 fprintf(stderr, "Not overwriting - exiting\n");
3147 exit_program(1);
3148 }
3149 }
3150 else {
3151 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3152 exit_program(1);
3153 }
3154 }
3155 }
3156 }
3157
3158 static void dump_attachment(AVStream *st, const char *filename)
3159 {
3160 int ret;
3161 AVIOContext *out = NULL;
3162 AVDictionaryEntry *e;
3163
3164 if (!st->codec->extradata_size) {
3165 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3166 nb_input_files - 1, st->index);
3167 return;
3168 }
3169 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3170 filename = e->value;
3171 if (!*filename) {
3172 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3173 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3174 exit_program(1);
3175 }
3176
3177 assert_file_overwrite(filename);
3178
3179 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3180 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3181 filename);
3182 exit_program(1);
3183 }
3184
3185 avio_write(out, st->codec->extradata, st->codec->extradata_size);
3186 avio_flush(out);
3187 avio_close(out);
3188 }
3189
3190 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3191 {
3192 AVFormatContext *ic;
3193 AVInputFormat *file_iformat = NULL;
3194 int err, i, ret;
3195 int64_t timestamp;
3196 uint8_t buf[128];
3197 AVDictionary **opts;
3198 int orig_nb_streams; // number of streams before avformat_find_stream_info
3199
3200 if (o->format) {
3201 if (!(file_iformat = av_find_input_format(o->format))) {
3202 av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);