kmvc: Use bytestream2 functions to prevent buffer overreads.
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/vsrc_buffer.h"
55 #endif
56
57 #if HAVE_SYS_RESOURCE_H
58 #include <sys/types.h>
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #elif HAVE_GETPROCESSTIMES
62 #include <windows.h>
63 #endif
64 #if HAVE_GETPROCESSMEMORYINFO
65 #include <windows.h>
66 #include <psapi.h>
67 #endif
68
69 #if HAVE_SYS_SELECT_H
70 #include <sys/select.h>
71 #endif
72
73 #include <time.h>
74
75 #include "cmdutils.h"
76
77 #include "libavutil/avassert.h"
78
79 #define VSYNC_AUTO -1
80 #define VSYNC_PASSTHROUGH 0
81 #define VSYNC_CFR 1
82 #define VSYNC_VFR 2
83
84 const char program_name[] = "avconv";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct StreamMap {
89 int disabled; /** 1 is this mapping is disabled by a negative map */
90 int file_index;
91 int stream_index;
92 int sync_file_index;
93 int sync_stream_index;
94 } StreamMap;
95
96 /**
97 * select an input file for an output file
98 */
99 typedef struct MetadataMap {
100 int file; ///< file index
101 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
102 int index; ///< stream/chapter/program number
103 } MetadataMap;
104
105 static const OptionDef options[];
106
107 static int video_discard = 0;
108 static int same_quant = 0;
109 static int do_deinterlace = 0;
110 static int intra_dc_precision = 8;
111 static int qp_hist = 0;
112
113 static int file_overwrite = 0;
114 static int do_benchmark = 0;
115 static int do_hex_dump = 0;
116 static int do_pkt_dump = 0;
117 static int do_pass = 0;
118 static char *pass_logfilename_prefix = NULL;
119 static int video_sync_method = VSYNC_AUTO;
120 static int audio_sync_method = 0;
121 static float audio_drift_threshold = 0.1;
122 static int copy_ts = 0;
123 static int copy_tb = 1;
124 static int opt_shortest = 0;
125 static char *vstats_filename;
126 static FILE *vstats_file;
127
128 static int audio_volume = 256;
129
130 static int exit_on_error = 0;
131 static int using_stdin = 0;
132 static int64_t video_size = 0;
133 static int64_t audio_size = 0;
134 static int64_t extra_size = 0;
135 static int nb_frames_dup = 0;
136 static int nb_frames_drop = 0;
137 static int input_sync;
138
139 static float dts_delta_threshold = 10;
140
141 static int print_stats = 1;
142
143 static uint8_t *audio_buf;
144 static uint8_t *audio_out;
145 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
146
147 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
148
149 typedef struct FrameBuffer {
150 uint8_t *base[4];
151 uint8_t *data[4];
152 int linesize[4];
153
154 int h, w;
155 enum PixelFormat pix_fmt;
156
157 int refcount;
158 struct InputStream *ist;
159 struct FrameBuffer *next;
160 } FrameBuffer;
161
162 typedef struct InputStream {
163 int file_index;
164 AVStream *st;
165 int discard; /* true if stream data should be discarded */
166 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
167 AVCodec *dec;
168 AVFrame *decoded_frame;
169 AVFrame *filtered_frame;
170
171 int64_t start; /* time when read started */
172 int64_t next_pts; /* synthetic pts for cases where pkt.pts
173 is not defined */
174 int64_t pts; /* current pts */
175 PtsCorrectionContext pts_ctx;
176 double ts_scale;
177 int is_start; /* is 1 at the start and after a discontinuity */
178 int showed_multi_packet_warning;
179 AVDictionary *opts;
180
181 /* a pool of free buffers for decoded data */
182 FrameBuffer *buffer_pool;
183 } InputStream;
184
185 typedef struct InputFile {
186 AVFormatContext *ctx;
187 int eof_reached; /* true if eof reached */
188 int ist_index; /* index of first stream in ist_table */
189 int buffer_size; /* current total buffer size */
190 int64_t ts_offset;
191 int nb_streams; /* number of stream that avconv is aware of; may be different
192 from ctx.nb_streams if new streams appear during av_read_frame() */
193 int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197 int file_index; /* file index */
198 int index; /* stream index in the output file */
199 int source_index; /* InputStream index */
200 AVStream *st; /* stream in the output file */
201 int encoding_needed; /* true if encoding needed for this stream */
202 int frame_number;
203 /* input pts and corresponding output pts
204 for A/V sync */
205 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
206 struct InputStream *sync_ist; /* input stream to sync against */
207 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
208 AVBitStreamFilterContext *bitstream_filters;
209 AVCodec *enc;
210 int64_t max_frames;
211
212 /* video only */
213 int video_resample;
214 AVFrame pict_tmp; /* temporary image for resampling */
215 struct SwsContext *img_resample_ctx; /* for image resampling */
216 int resample_height;
217 int resample_width;
218 int resample_pix_fmt;
219 AVRational frame_rate;
220 int force_fps;
221 int top_field_first;
222
223 float frame_aspect_ratio;
224
225 /* forced key frames */
226 int64_t *forced_kf_pts;
227 int forced_kf_count;
228 int forced_kf_index;
229
230 /* audio only */
231 int audio_resample;
232 ReSampleContext *resample; /* for audio resampling */
233 int resample_sample_fmt;
234 int resample_channels;
235 int resample_sample_rate;
236 int reformat_pair;
237 AVAudioConvert *reformat_ctx;
238 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
239 FILE *logfile;
240
241 #if CONFIG_AVFILTER
242 AVFilterContext *output_video_filter;
243 AVFilterContext *input_video_filter;
244 AVFilterBufferRef *picref;
245 char *avfilter;
246 AVFilterGraph *graph;
247 #endif
248
249 int64_t sws_flags;
250 AVDictionary *opts;
251 int is_past_recording_time;
252 int stream_copy;
253 const char *attachment_filename;
254 int copy_initial_nonkeyframes;
255 } OutputStream;
256
257
258 typedef struct OutputFile {
259 AVFormatContext *ctx;
260 AVDictionary *opts;
261 int ost_index; /* index of the first stream in output_streams */
262 int64_t recording_time; /* desired length of the resulting file in microseconds */
263 int64_t start_time; /* start time in microseconds */
264 uint64_t limit_filesize;
265 } OutputFile;
266
267 static InputStream *input_streams = NULL;
268 static int nb_input_streams = 0;
269 static InputFile *input_files = NULL;
270 static int nb_input_files = 0;
271
272 static OutputStream *output_streams = NULL;
273 static int nb_output_streams = 0;
274 static OutputFile *output_files = NULL;
275 static int nb_output_files = 0;
276
277 typedef struct OptionsContext {
278 /* input/output options */
279 int64_t start_time;
280 const char *format;
281
282 SpecifierOpt *codec_names;
283 int nb_codec_names;
284 SpecifierOpt *audio_channels;
285 int nb_audio_channels;
286 SpecifierOpt *audio_sample_rate;
287 int nb_audio_sample_rate;
288 SpecifierOpt *frame_rates;
289 int nb_frame_rates;
290 SpecifierOpt *frame_sizes;
291 int nb_frame_sizes;
292 SpecifierOpt *frame_pix_fmts;
293 int nb_frame_pix_fmts;
294
295 /* input options */
296 int64_t input_ts_offset;
297 int rate_emu;
298
299 SpecifierOpt *ts_scale;
300 int nb_ts_scale;
301 SpecifierOpt *dump_attachment;
302 int nb_dump_attachment;
303
304 /* output options */
305 StreamMap *stream_maps;
306 int nb_stream_maps;
307 /* first item specifies output metadata, second is input */
308 MetadataMap (*meta_data_maps)[2];
309 int nb_meta_data_maps;
310 int metadata_global_manual;
311 int metadata_streams_manual;
312 int metadata_chapters_manual;
313 const char **attachments;
314 int nb_attachments;
315
316 int chapters_input_file;
317
318 int64_t recording_time;
319 uint64_t limit_filesize;
320 float mux_preload;
321 float mux_max_delay;
322
323 int video_disable;
324 int audio_disable;
325 int subtitle_disable;
326 int data_disable;
327
328 /* indexed by output file stream index */
329 int *streamid_map;
330 int nb_streamid_map;
331
332 SpecifierOpt *metadata;
333 int nb_metadata;
334 SpecifierOpt *max_frames;
335 int nb_max_frames;
336 SpecifierOpt *bitstream_filters;
337 int nb_bitstream_filters;
338 SpecifierOpt *codec_tags;
339 int nb_codec_tags;
340 SpecifierOpt *sample_fmts;
341 int nb_sample_fmts;
342 SpecifierOpt *qscale;
343 int nb_qscale;
344 SpecifierOpt *forced_key_frames;
345 int nb_forced_key_frames;
346 SpecifierOpt *force_fps;
347 int nb_force_fps;
348 SpecifierOpt *frame_aspect_ratios;
349 int nb_frame_aspect_ratios;
350 SpecifierOpt *rc_overrides;
351 int nb_rc_overrides;
352 SpecifierOpt *intra_matrices;
353 int nb_intra_matrices;
354 SpecifierOpt *inter_matrices;
355 int nb_inter_matrices;
356 SpecifierOpt *top_field_first;
357 int nb_top_field_first;
358 SpecifierOpt *metadata_map;
359 int nb_metadata_map;
360 SpecifierOpt *presets;
361 int nb_presets;
362 SpecifierOpt *copy_initial_nonkeyframes;
363 int nb_copy_initial_nonkeyframes;
364 #if CONFIG_AVFILTER
365 SpecifierOpt *filters;
366 int nb_filters;
367 #endif
368 } OptionsContext;
369
370 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
371 {\
372 int i, ret;\
373 for (i = 0; i < o->nb_ ## name; i++) {\
374 char *spec = o->name[i].specifier;\
375 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
376 outvar = o->name[i].u.type;\
377 else if (ret < 0)\
378 exit_program(1);\
379 }\
380 }
381
382 static void reset_options(OptionsContext *o)
383 {
384 const OptionDef *po = options;
385
386 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
387 while (po->name) {
388 void *dst = (uint8_t*)o + po->u.off;
389
390 if (po->flags & OPT_SPEC) {
391 SpecifierOpt **so = dst;
392 int i, *count = (int*)(so + 1);
393 for (i = 0; i < *count; i++) {
394 av_freep(&(*so)[i].specifier);
395 if (po->flags & OPT_STRING)
396 av_freep(&(*so)[i].u.str);
397 }
398 av_freep(so);
399 *count = 0;
400 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
401 av_freep(dst);
402 po++;
403 }
404
405 av_freep(&o->stream_maps);
406 av_freep(&o->meta_data_maps);
407 av_freep(&o->streamid_map);
408
409 memset(o, 0, sizeof(*o));
410
411 o->mux_max_delay = 0.7;
412 o->recording_time = INT64_MAX;
413 o->limit_filesize = UINT64_MAX;
414 o->chapters_input_file = INT_MAX;
415
416 uninit_opts();
417 init_opts();
418 }
419
420 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
421 {
422 AVCodecContext *s = ist->st->codec;
423 FrameBuffer *buf = av_mallocz(sizeof(*buf));
424 int ret;
425 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
426 int h_chroma_shift, v_chroma_shift;
427 int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
428 int w = s->width, h = s->height;
429
430 if (!buf)
431 return AVERROR(ENOMEM);
432
433 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
434 w += 2*edge;
435 h += 2*edge;
436 }
437
438 avcodec_align_dimensions(s, &w, &h);
439 if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
440 s->pix_fmt, 32)) < 0) {
441 av_freep(&buf);
442 return ret;
443 }
444 /* XXX this shouldn't be needed, but some tests break without this line
445 * those decoders are buggy and need to be fixed.
446 * the following tests fail:
447 * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
448 */
449 memset(buf->base[0], 128, ret);
450
451 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
452 for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
453 const int h_shift = i==0 ? 0 : h_chroma_shift;
454 const int v_shift = i==0 ? 0 : v_chroma_shift;
455 if (s->flags & CODEC_FLAG_EMU_EDGE)
456 buf->data[i] = buf->base[i];
457 else
458 buf->data[i] = buf->base[i] +
459 FFALIGN((buf->linesize[i]*edge >> v_shift) +
460 (pixel_size*edge >> h_shift), 32);
461 }
462 buf->w = s->width;
463 buf->h = s->height;
464 buf->pix_fmt = s->pix_fmt;
465 buf->ist = ist;
466
467 *pbuf = buf;
468 return 0;
469 }
470
471 static void free_buffer_pool(InputStream *ist)
472 {
473 FrameBuffer *buf = ist->buffer_pool;
474 while (buf) {
475 ist->buffer_pool = buf->next;
476 av_freep(&buf->base[0]);
477 av_free(buf);
478 buf = ist->buffer_pool;
479 }
480 }
481
482 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
483 {
484 av_assert0(buf->refcount);
485 buf->refcount--;
486 if (!buf->refcount) {
487 buf->next = ist->buffer_pool;
488 ist->buffer_pool = buf;
489 }
490 }
491
492 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
493 {
494 InputStream *ist = s->opaque;
495 FrameBuffer *buf;
496 int ret, i;
497
498 if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
499 return ret;
500
501 buf = ist->buffer_pool;
502 ist->buffer_pool = buf->next;
503 buf->next = NULL;
504 if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
505 av_freep(&buf->base[0]);
506 av_free(buf);
507 if ((ret = alloc_buffer(ist, &buf)) < 0)
508 return ret;
509 }
510 buf->refcount++;
511
512 frame->opaque = buf;
513 frame->type = FF_BUFFER_TYPE_USER;
514 frame->extended_data = frame->data;
515 frame->pkt_pts = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
516
517 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
518 frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
519 frame->data[i] = buf->data[i];
520 frame->linesize[i] = buf->linesize[i];
521 }
522
523 return 0;
524 }
525
526 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
527 {
528 InputStream *ist = s->opaque;
529 FrameBuffer *buf = frame->opaque;
530 int i;
531
532 for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
533 frame->data[i] = NULL;
534
535 unref_buffer(ist, buf);
536 }
537
538 static void filter_release_buffer(AVFilterBuffer *fb)
539 {
540 FrameBuffer *buf = fb->priv;
541 av_free(fb);
542 unref_buffer(buf->ist, buf);
543 }
544
545 #if CONFIG_AVFILTER
546
547 static int configure_video_filters(InputStream *ist, OutputStream *ost)
548 {
549 AVFilterContext *last_filter, *filter;
550 /** filter graph containing all filters including input & output */
551 AVCodecContext *codec = ost->st->codec;
552 AVCodecContext *icodec = ist->st->codec;
553 FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
554 AVRational sample_aspect_ratio;
555 char args[255];
556 int ret;
557
558 ost->graph = avfilter_graph_alloc();
559
560 if (ist->st->sample_aspect_ratio.num) {
561 sample_aspect_ratio = ist->st->sample_aspect_ratio;
562 } else
563 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
564
565 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
566 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
567 sample_aspect_ratio.num, sample_aspect_ratio.den);
568
569 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
570 "src", args, NULL, ost->graph);
571 if (ret < 0)
572 return ret;
573 ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
574 "out", NULL, &ffsink_ctx, ost->graph);
575 if (ret < 0)
576 return ret;
577 last_filter = ost->input_video_filter;
578
579 if (codec->width != icodec->width || codec->height != icodec->height) {
580 snprintf(args, 255, "%d:%d:flags=0x%X",
581 codec->width,
582 codec->height,
583 (unsigned)ost->sws_flags);
584 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
585 NULL, args, NULL, ost->graph)) < 0)
586 return ret;
587 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
588 return ret;
589 last_filter = filter;
590 }
591
592 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
593 ost->graph->scale_sws_opts = av_strdup(args);
594
595 if (ost->avfilter) {
596 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
597 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
598
599 outputs->name = av_strdup("in");
600 outputs->filter_ctx = last_filter;
601 outputs->pad_idx = 0;
602 outputs->next = NULL;
603
604 inputs->name = av_strdup("out");
605 inputs->filter_ctx = ost->output_video_filter;
606 inputs->pad_idx = 0;
607 inputs->next = NULL;
608
609 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
610 return ret;
611 av_freep(&ost->avfilter);
612 } else {
613 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
614 return ret;
615 }
616
617 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
618 return ret;
619
620 codec->width = ost->output_video_filter->inputs[0]->w;
621 codec->height = ost->output_video_filter->inputs[0]->h;
622 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
623 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
624 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
625 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
626
627 return 0;
628 }
629 #endif /* CONFIG_AVFILTER */
630
631 static void term_exit(void)
632 {
633 av_log(NULL, AV_LOG_QUIET, "");
634 }
635
636 static volatile int received_sigterm = 0;
637 static volatile int received_nb_signals = 0;
638
639 static void
640 sigterm_handler(int sig)
641 {
642 received_sigterm = sig;
643 received_nb_signals++;
644 term_exit();
645 }
646
647 static void term_init(void)
648 {
649 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
650 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
651 #ifdef SIGXCPU
652 signal(SIGXCPU, sigterm_handler);
653 #endif
654 }
655
656 static int decode_interrupt_cb(void *ctx)
657 {
658 return received_nb_signals > 1;
659 }
660
661 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
662
663 void exit_program(int ret)
664 {
665 int i;
666
667 /* close files */
668 for (i = 0; i < nb_output_files; i++) {
669 AVFormatContext *s = output_files[i].ctx;
670 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
671 avio_close(s->pb);
672 avformat_free_context(s);
673 av_dict_free(&output_files[i].opts);
674 }
675 for (i = 0; i < nb_output_streams; i++) {
676 AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
677 while (bsfc) {
678 AVBitStreamFilterContext *next = bsfc->next;
679 av_bitstream_filter_close(bsfc);
680 bsfc = next;
681 }
682 output_streams[i].bitstream_filters = NULL;
683 }
684 for (i = 0; i < nb_input_files; i++) {
685 avformat_close_input(&input_files[i].ctx);
686 }
687 for (i = 0; i < nb_input_streams; i++) {
688 av_freep(&input_streams[i].decoded_frame);
689 av_freep(&input_streams[i].filtered_frame);
690 av_dict_free(&input_streams[i].opts);
691 free_buffer_pool(&input_streams[i]);
692 }
693
694 if (vstats_file)
695 fclose(vstats_file);
696 av_free(vstats_filename);
697
698 av_freep(&input_streams);
699 av_freep(&input_files);
700 av_freep(&output_streams);
701 av_freep(&output_files);
702
703 uninit_opts();
704 av_free(audio_buf);
705 av_free(audio_out);
706 allocated_audio_buf_size = allocated_audio_out_size = 0;
707
708 #if CONFIG_AVFILTER
709 avfilter_uninit();
710 #endif
711 avformat_network_deinit();
712
713 if (received_sigterm) {
714 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
715 (int) received_sigterm);
716 exit (255);
717 }
718
719 exit(ret);
720 }
721
722 static void assert_avoptions(AVDictionary *m)
723 {
724 AVDictionaryEntry *t;
725 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
726 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
727 exit_program(1);
728 }
729 }
730
731 static void assert_codec_experimental(AVCodecContext *c, int encoder)
732 {
733 const char *codec_string = encoder ? "encoder" : "decoder";
734 AVCodec *codec;
735 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
736 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
737 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
738 "results.\nAdd '-strict experimental' if you want to use it.\n",
739 codec_string, c->codec->name);
740 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
741 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
742 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
743 codec_string, codec->name);
744 exit_program(1);
745 }
746 }
747
748 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
749 {
750 if (codec && codec->sample_fmts) {
751 const enum AVSampleFormat *p = codec->sample_fmts;
752 for (; *p != -1; p++) {
753 if (*p == st->codec->sample_fmt)
754 break;
755 }
756 if (*p == -1) {
757 av_log(NULL, AV_LOG_WARNING,
758 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
759 av_get_sample_fmt_name(st->codec->sample_fmt),
760 codec->name,
761 av_get_sample_fmt_name(codec->sample_fmts[0]));
762 st->codec->sample_fmt = codec->sample_fmts[0];
763 }
764 }
765 }
766
767 /**
768 * Update the requested input sample format based on the output sample format.
769 * This is currently only used to request float output from decoders which
770 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
771 * Ideally this will be removed in the future when decoders do not do format
772 * conversion and only output in their native format.
773 */
774 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
775 AVCodecContext *enc)
776 {
777 /* if sample formats match or a decoder sample format has already been
778 requested, just return */
779 if (enc->sample_fmt == dec->sample_fmt ||
780 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
781 return;
782
783 /* if decoder supports more than one output format */
784 if (dec_codec && dec_codec->sample_fmts &&
785 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
786 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
787 const enum AVSampleFormat *p;
788 int min_dec = -1, min_inc = -1;
789
790 /* find a matching sample format in the encoder */
791 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
792 if (*p == enc->sample_fmt) {
793 dec->request_sample_fmt = *p;
794 return;
795 } else if (*p > enc->sample_fmt) {
796 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
797 } else
798 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
799 }
800
801 /* if none match, provide the one that matches quality closest */
802 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
803 enc->sample_fmt - min_dec;
804 }
805 }
806
807 static void choose_sample_rate(AVStream *st, AVCodec *codec)
808 {
809 if (codec && codec->supported_samplerates) {
810 const int *p = codec->supported_samplerates;
811 int best = 0;
812 int best_dist = INT_MAX;
813 for (; *p; p++) {
814 int dist = abs(st->codec->sample_rate - *p);
815 if (dist < best_dist) {
816 best_dist = dist;
817 best = *p;
818 }
819 }
820 if (best_dist) {
821 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
822 }
823 st->codec->sample_rate = best;
824 }
825 }
826
827 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
828 {
829 if (codec && codec->pix_fmts) {
830 const enum PixelFormat *p = codec->pix_fmts;
831 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
832 if (st->codec->codec_id == CODEC_ID_MJPEG) {
833 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
834 } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
835 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
836 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
837 }
838 }
839 for (; *p != PIX_FMT_NONE; p++) {
840 if (*p == st->codec->pix_fmt)
841 break;
842 }
843 if (*p == PIX_FMT_NONE) {
844 if (st->codec->pix_fmt != PIX_FMT_NONE)
845 av_log(NULL, AV_LOG_WARNING,
846 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
847 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
848 codec->name,
849 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
850 st->codec->pix_fmt = codec->pix_fmts[0];
851 }
852 }
853 }
854
855 static double
856 get_sync_ipts(const OutputStream *ost)
857 {
858 const InputStream *ist = ost->sync_ist;
859 OutputFile *of = &output_files[ost->file_index];
860 return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
861 }
862
863 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
864 {
865 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
866 AVCodecContext *avctx = ost->st->codec;
867 int ret;
868
869 while (bsfc) {
870 AVPacket new_pkt = *pkt;
871 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
872 &new_pkt.data, &new_pkt.size,
873 pkt->data, pkt->size,
874 pkt->flags & AV_PKT_FLAG_KEY);
875 if (a > 0) {
876 av_free_packet(pkt);
877 new_pkt.destruct = av_destruct_packet;
878 } else if (a < 0) {
879 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
880 bsfc->filter->name, pkt->stream_index,
881 avctx->codec ? avctx->codec->name : "copy");
882 print_error("", a);
883 if (exit_on_error)
884 exit_program(1);
885 }
886 *pkt = new_pkt;
887
888 bsfc = bsfc->next;
889 }
890
891 ret = av_interleaved_write_frame(s, pkt);
892 if (ret < 0) {
893 print_error("av_interleaved_write_frame()", ret);
894 exit_program(1);
895 }
896 ost->frame_number++;
897 }
898
899 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
900 {
901 int fill_char = 0x00;
902 if (sample_fmt == AV_SAMPLE_FMT_U8)
903 fill_char = 0x80;
904 memset(buf, fill_char, size);
905 }
906
907 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
908 InputStream *ist, AVFrame *decoded_frame)
909 {
910 uint8_t *buftmp;
911 int64_t audio_out_size, audio_buf_size;
912
913 int size_out, frame_bytes, ret, resample_changed;
914 AVCodecContext *enc = ost->st->codec;
915 AVCodecContext *dec = ist->st->codec;
916 int osize = av_get_bytes_per_sample(enc->sample_fmt);
917 int isize = av_get_bytes_per_sample(dec->sample_fmt);
918 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
919 uint8_t *buf = decoded_frame->data[0];
920 int size = decoded_frame->nb_samples * dec->channels * isize;
921 int64_t allocated_for_size = size;
922
923 need_realloc:
924 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
925 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
926 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
927 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
928 audio_buf_size *= osize * enc->channels;
929
930 audio_out_size = FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
931 if (coded_bps > 8 * osize)
932 audio_out_size = audio_out_size * coded_bps / (8*osize);
933 audio_out_size += FF_MIN_BUFFER_SIZE;
934
935 if (audio_out_size > INT_MAX || audio_buf_size > INT_MAX) {
936 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
937 exit_program(1);
938 }
939
940 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
941 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
942 if (!audio_buf || !audio_out) {
943 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
944 exit_program(1);
945 }
946
947 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
948 ost->audio_resample = 1;
949
950 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
951 ost->resample_channels != dec->channels ||
952 ost->resample_sample_rate != dec->sample_rate;
953
954 if ((ost->audio_resample && !ost->resample) || resample_changed) {
955 if (resample_changed) {
956 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",
957 ist->file_index, ist->st->index,
958 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
959 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
960 ost->resample_sample_fmt = dec->sample_fmt;
961 ost->resample_channels = dec->channels;
962 ost->resample_sample_rate = dec->sample_rate;
963 if (ost->resample)
964 audio_resample_close(ost->resample);
965 }
966 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
967 if (audio_sync_method <= 1 &&
968 ost->resample_sample_fmt == enc->sample_fmt &&
969 ost->resample_channels == enc->channels &&
970 ost->resample_sample_rate == enc->sample_rate) {
971 ost->resample = NULL;
972 ost->audio_resample = 0;
973 } else if (ost->audio_resample) {
974 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
975 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
976 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
977 enc->sample_rate, dec->sample_rate,
978 enc->sample_fmt, dec->sample_fmt,
979 16, 10, 0, 0.8);
980 if (!ost->resample) {
981 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
982 dec->channels, dec->sample_rate,
983 enc->channels, enc->sample_rate);
984 exit_program(1);
985 }
986 }
987 }
988
989 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
990 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
991 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
992 if (ost->reformat_ctx)
993 av_audio_convert_free(ost->reformat_ctx);
994 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
995 dec->sample_fmt, 1, NULL, 0);
996 if (!ost->reformat_ctx) {
997 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
998 av_get_sample_fmt_name(dec->sample_fmt),
999 av_get_sample_fmt_name(enc->sample_fmt));
1000 exit_program(1);
1001 }
1002 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
1003 }
1004
1005 if (audio_sync_method) {
1006 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1007 av_fifo_size(ost->fifo) / (enc->channels * osize);
1008 int idelta = delta * dec->sample_rate / enc->sample_rate;
1009 int byte_delta = idelta * isize * dec->channels;
1010
1011 // FIXME resample delay
1012 if (fabs(delta) > 50) {
1013 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1014 if (byte_delta < 0) {
1015 byte_delta = FFMAX(byte_delta, -size);
1016 size += byte_delta;
1017 buf -= byte_delta;
1018 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1019 -byte_delta / (isize * dec->channels));
1020 if (!size)
1021 return;
1022 ist->is_start = 0;
1023 } else {
1024 static uint8_t *input_tmp = NULL;
1025 input_tmp = av_realloc(input_tmp, byte_delta + size);
1026
1027 if (byte_delta > allocated_for_size - size) {
1028 allocated_for_size = byte_delta + (int64_t)size;
1029 goto need_realloc;
1030 }
1031 ist->is_start = 0;
1032
1033 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1034 memcpy(input_tmp + byte_delta, buf, size);
1035 buf = input_tmp;
1036 size += byte_delta;
1037 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1038 }
1039 } else if (audio_sync_method > 1) {
1040 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1041 av_assert0(ost->audio_resample);
1042 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1043 delta, comp, enc->sample_rate);
1044 // 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));
1045 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1046 }
1047 }
1048 } else
1049 ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1050 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1051
1052 if (ost->audio_resample) {
1053 buftmp = audio_buf;
1054 size_out = audio_resample(ost->resample,
1055 (short *)buftmp, (short *)buf,
1056 size / (dec->channels * isize));
1057 size_out = size_out * enc->channels * osize;
1058 } else {
1059 buftmp = buf;
1060 size_out = size;
1061 }
1062
1063 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1064 const void *ibuf[6] = { buftmp };
1065 void *obuf[6] = { audio_buf };
1066 int istride[6] = { isize };
1067 int ostride[6] = { osize };
1068 int len = size_out / istride[0];
1069 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1070 printf("av_audio_convert() failed\n");
1071 if (exit_on_error)
1072 exit_program(1);
1073 return;
1074 }
1075 buftmp = audio_buf;
1076 size_out = len * osize;
1077 }
1078
1079 /* now encode as many frames as possible */
1080 if (enc->frame_size > 1) {
1081 /* output resampled raw samples */
1082 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1083 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1084 exit_program(1);
1085 }
1086 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1087
1088 frame_bytes = enc->frame_size * osize * enc->channels;
1089
1090 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1091 AVPacket pkt;
1092 av_init_packet(&pkt);
1093
1094 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1095
1096 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1097
1098 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1099 (short *)audio_buf);
1100 if (ret < 0) {
1101 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1102 exit_program(1);
1103 }
1104 audio_size += ret;
1105 pkt.stream_index = ost->index;
1106 pkt.data = audio_out;
1107 pkt.size = ret;
1108 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1109 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1110 pkt.flags |= AV_PKT_FLAG_KEY;
1111 write_frame(s, &pkt, ost);
1112
1113 ost->sync_opts += enc->frame_size;
1114 }
1115 } else {
1116 AVPacket pkt;
1117 av_init_packet(&pkt);
1118
1119 ost->sync_opts += size_out / (osize * enc->channels);
1120
1121 /* output a pcm frame */
1122 /* determine the size of the coded buffer */
1123 size_out /= osize;
1124 if (coded_bps)
1125 size_out = size_out * coded_bps / 8;
1126
1127 if (size_out > audio_out_size) {
1128 av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1129 exit_program(1);
1130 }
1131
1132 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1133 ret = avcodec_encode_audio(enc, audio_out, size_out,
1134 (short *)buftmp);
1135 if (ret < 0) {
1136 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1137 exit_program(1);
1138 }
1139 audio_size += ret;
1140 pkt.stream_index = ost->index;
1141 pkt.data = audio_out;
1142 pkt.size = ret;
1143 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1144 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1145 pkt.flags |= AV_PKT_FLAG_KEY;
1146 write_frame(s, &pkt, ost);
1147 }
1148 }
1149
1150 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1151 {
1152 AVCodecContext *dec;
1153 AVPicture *picture2;
1154 AVPicture picture_tmp;
1155 uint8_t *buf = 0;
1156
1157 dec = ist->st->codec;
1158
1159 /* deinterlace : must be done before any resize */
1160 if (do_deinterlace) {
1161 int size;
1162
1163 /* create temporary picture */
1164 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1165 buf = av_malloc(size);
1166 if (!buf)
1167 return;
1168
1169 picture2 = &picture_tmp;
1170 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1171
1172 if (avpicture_deinterlace(picture2, picture,
1173 dec->pix_fmt, dec->width, dec->height) < 0) {
1174 /* if error, do not deinterlace */
1175 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1176 av_free(buf);
1177 buf = NULL;
1178 picture2 = picture;
1179 }
1180 } else {
1181 picture2 = picture;
1182 }
1183
1184 if (picture != picture2)
1185 *picture = *picture2;
1186 *bufp = buf;
1187 }
1188
1189 static void do_subtitle_out(AVFormatContext *s,
1190 OutputStream *ost,
1191 InputStream *ist,
1192 AVSubtitle *sub,
1193 int64_t pts)
1194 {
1195 static uint8_t *subtitle_out = NULL;
1196 int subtitle_out_max_size = 1024 * 1024;
1197 int subtitle_out_size, nb, i;
1198 AVCodecContext *enc;
1199 AVPacket pkt;
1200
1201 if (pts == AV_NOPTS_VALUE) {
1202 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1203 if (exit_on_error)
1204 exit_program(1);
1205 return;
1206 }
1207
1208 enc = ost->st->codec;
1209
1210 if (!subtitle_out) {
1211 subtitle_out = av_malloc(subtitle_out_max_size);
1212 }
1213
1214 /* Note: DVB subtitle need one packet to draw them and one other
1215 packet to clear them */
1216 /* XXX: signal it in the codec context ? */
1217 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1218 nb = 2;
1219 else
1220 nb = 1;
1221
1222 for (i = 0; i < nb; i++) {
1223 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1224 // start_display_time is required to be 0
1225 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1226 sub->end_display_time -= sub->start_display_time;
1227 sub->start_display_time = 0;
1228 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1229 subtitle_out_max_size, sub);
1230 if (subtitle_out_size < 0) {
1231 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1232 exit_program(1);
1233 }
1234
1235 av_init_packet(&pkt);
1236 pkt.stream_index = ost->index;
1237 pkt.data = subtitle_out;
1238 pkt.size = subtitle_out_size;
1239 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1240 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1241 /* XXX: the pts correction is handled here. Maybe handling
1242 it in the codec would be better */
1243 if (i == 0)
1244 pkt.pts += 90 * sub->start_display_time;
1245 else
1246 pkt.pts += 90 * sub->end_display_time;
1247 }
1248 write_frame(s, &pkt, ost);
1249 }
1250 }
1251
1252 static int bit_buffer_size = 1024 * 256;
1253 static uint8_t *bit_buffer = NULL;
1254
1255 static void do_video_resample(OutputStream *ost,
1256 InputStream *ist,
1257 AVFrame *in_picture,
1258 AVFrame **out_picture)
1259 {
1260 int resample_changed = 0;
1261 AVCodecContext *dec = ist->st->codec;
1262 *out_picture = in_picture;
1263
1264 resample_changed = ost->resample_width != dec->width ||
1265 ost->resample_height != dec->height ||
1266 ost->resample_pix_fmt != dec->pix_fmt;
1267
1268 if (resample_changed) {
1269 av_log(NULL, AV_LOG_INFO,
1270 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1271 ist->file_index, ist->st->index,
1272 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1273 dec->width , dec->height , av_get_pix_fmt_name(dec->pix_fmt));
1274 if (!ost->video_resample)
1275 ost->video_resample = 1;
1276 }
1277
1278 #if !CONFIG_AVFILTER
1279 if (ost->video_resample) {
1280 *out_picture = &ost->pict_tmp;
1281 if (resample_changed) {
1282 /* initialize a new scaler context */
1283 sws_freeContext(ost->img_resample_ctx);
1284 ost->img_resample_ctx = sws_getContext(
1285 ist->st->codec->width,
1286 ist->st->codec->height,
1287 ist->st->codec->pix_fmt,
1288 ost->st->codec->width,
1289 ost->st->codec->height,
1290 ost->st->codec->pix_fmt,
1291 ost->sws_flags, NULL, NULL, NULL);
1292 if (ost->img_resample_ctx == NULL) {
1293 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1294 exit_program(1);
1295 }
1296 }
1297 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1298 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1299 }
1300 #else
1301 if (resample_changed) {
1302 avfilter_graph_free(&ost->graph);
1303 if (configure_video_filters(ist, ost)) {
1304 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1305 exit_program(1);
1306 }
1307 }
1308 #endif
1309 if (resample_changed) {
1310 ost->resample_width = dec->width;
1311 ost->resample_height = dec->height;
1312 ost->resample_pix_fmt = dec->pix_fmt;
1313 }
1314 }
1315
1316
1317 static void do_video_out(AVFormatContext *s,
1318 OutputStream *ost,
1319 InputStream *ist,
1320 AVFrame *in_picture,
1321 int *frame_size, float quality)
1322 {
1323 int nb_frames, i, ret, format_video_sync;
1324 AVFrame *final_picture;
1325 AVCodecContext *enc;
1326 double sync_ipts;
1327
1328 enc = ost->st->codec;
1329
1330 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1331
1332 /* by default, we output a single frame */
1333 nb_frames = 1;
1334
1335 *frame_size = 0;
1336
1337 format_video_sync = video_sync_method;
1338 if (format_video_sync == VSYNC_AUTO)
1339 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
1340 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
1341
1342 if (format_video_sync != VSYNC_PASSTHROUGH) {
1343 double vdelta = sync_ipts - ost->sync_opts;
1344 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1345 if (vdelta < -1.1)
1346 nb_frames = 0;
1347 else if (format_video_sync == VSYNC_VFR) {
1348 if (vdelta <= -0.6) {
1349 nb_frames = 0;
1350 } else if (vdelta > 0.6)
1351 ost->sync_opts = lrintf(sync_ipts);
1352 } else if (vdelta > 1.1)
1353 nb_frames = lrintf(vdelta);
1354 //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);
1355 if (nb_frames == 0) {
1356 ++nb_frames_drop;
1357 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1358 } else if (nb_frames > 1) {
1359 nb_frames_dup += nb_frames - 1;
1360 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1361 }
1362 } else
1363 ost->sync_opts = lrintf(sync_ipts);
1364
1365 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1366 if (nb_frames <= 0)
1367 return;
1368
1369 do_video_resample(ost, ist, in_picture, &final_picture);
1370
1371 /* duplicates frame if needed */
1372 for (i = 0; i < nb_frames; i++) {
1373 AVPacket pkt;
1374 av_init_packet(&pkt);
1375 pkt.stream_index = ost->index;
1376
1377 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1378 enc->codec->id == CODEC_ID_RAWVIDEO) {
1379 /* raw pictures are written as AVPicture structure to
1380 avoid any copies. We support temporarily the older
1381 method. */
1382 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1383 enc->coded_frame->top_field_first = in_picture->top_field_first;
1384 pkt.data = (uint8_t *)final_picture;
1385 pkt.size = sizeof(AVPicture);
1386 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1387 pkt.flags |= AV_PKT_FLAG_KEY;
1388
1389 write_frame(s, &pkt, ost);
1390 } else {
1391 AVFrame big_picture;
1392
1393 big_picture = *final_picture;
1394 /* better than nothing: use input picture interlaced
1395 settings */
1396 big_picture.interlaced_frame = in_picture->interlaced_frame;
1397 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1398 if (ost->top_field_first == -1)
1399 big_picture.top_field_first = in_picture->top_field_first;
1400 else
1401 big_picture.top_field_first = !!ost->top_field_first;
1402 }
1403
1404 /* handles same_quant here. This is not correct because it may
1405 not be a global option */
1406 big_picture.quality = quality;
1407 if (!enc->me_threshold)
1408 big_picture.pict_type = 0;
1409 // big_picture.pts = AV_NOPTS_VALUE;
1410 big_picture.pts = ost->sync_opts;
1411 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1412 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1413 if (ost->forced_kf_index < ost->forced_kf_count &&
1414 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1415 big_picture.pict_type = AV_PICTURE_TYPE_I;
1416 ost->forced_kf_index++;
1417 }
1418 ret = avcodec_encode_video(enc,
1419 bit_buffer, bit_buffer_size,
1420 &big_picture);
1421 if (ret < 0) {
1422 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1423 exit_program(1);
1424 }
1425
1426 if (ret > 0) {
1427 pkt.data = bit_buffer;
1428 pkt.size = ret;
1429 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1430 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1431 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1432 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1433 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1434
1435 if (enc->coded_frame->key_frame)
1436 pkt.flags |= AV_PKT_FLAG_KEY;
1437 write_frame(s, &pkt, ost);
1438 *frame_size = ret;
1439 video_size += ret;
1440 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1441 // enc->frame_number-1, ret, enc->pict_type);
1442 /* if two pass, output log */
1443 if (ost->logfile && enc->stats_out) {
1444 fprintf(ost->logfile, "%s", enc->stats_out);
1445 }
1446 }
1447 }
1448 ost->sync_opts++;
1449 }
1450 }
1451
1452 static double psnr(double d)
1453 {
1454 return -10.0 * log(d) / log(10.0);
1455 }
1456
1457 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1458 int frame_size)
1459 {
1460 AVCodecContext *enc;
1461 int frame_number;
1462 double ti1, bitrate, avg_bitrate;
1463
1464 /* this is executed just the first time do_video_stats is called */
1465 if (!vstats_file) {
1466 vstats_file = fopen(vstats_filename, "w");
1467 if (!vstats_file) {
1468 perror("fopen");
1469 exit_program(1);
1470 }
1471 }
1472
1473 enc = ost->st->codec;
1474 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1475 frame_number = ost->frame_number;
1476 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1477 if (enc->flags&CODEC_FLAG_PSNR)
1478 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1479
1480 fprintf(vstats_file,"f_size= %6d ", frame_size);
1481 /* compute pts value */
1482 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1483 if (ti1 < 0.01)
1484 ti1 = 0.01;
1485
1486 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1487 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1488 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1489 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1490 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1491 }
1492 }
1493
1494 static void print_report(OutputFile *output_files,
1495 OutputStream *ost_table, int nb_ostreams,
1496 int is_last_report, int64_t timer_start)
1497 {
1498 char buf[1024];
1499 OutputStream *ost;
1500 AVFormatContext *oc;
1501 int64_t total_size;
1502 AVCodecContext *enc;
1503 int frame_number, vid, i;
1504 double bitrate, ti1, pts;
1505 static int64_t last_time = -1;
1506 static int qp_histogram[52];
1507
1508 if (!print_stats && !is_last_report)
1509 return;
1510
1511 if (!is_last_report) {
1512 int64_t cur_time;
1513 /* display the report every 0.5 seconds */
1514 cur_time = av_gettime();
1515 if (last_time == -1) {
1516 last_time = cur_time;
1517 return;
1518 }
1519 if ((cur_time - last_time) < 500000)
1520 return;
1521 last_time = cur_time;
1522 }
1523
1524
1525 oc = output_files[0].ctx;
1526
1527 total_size = avio_size(oc->pb);
1528 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1529 total_size = avio_tell(oc->pb);
1530
1531 buf[0] = '\0';
1532 ti1 = 1e10;
1533 vid = 0;
1534 for (i = 0; i < nb_ostreams; i++) {
1535 float q = -1;
1536 ost = &ost_table[i];
1537 enc = ost->st->codec;
1538 if (!ost->stream_copy && enc->coded_frame)
1539 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1540 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1541 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1542 }
1543 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1544 float t = (av_gettime() - timer_start) / 1000000.0;
1545
1546 frame_number = ost->frame_number;
1547 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1548 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1549 if (is_last_report)
1550 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1551 if (qp_hist) {
1552 int j;
1553 int qp = lrintf(q);
1554 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1555 qp_histogram[qp]++;
1556 for (j = 0; j < 32; j++)
1557 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1558 }
1559 if (enc->flags&CODEC_FLAG_PSNR) {
1560 int j;
1561 double error, error_sum = 0;
1562 double scale, scale_sum = 0;
1563 char type[3] = { 'Y','U','V' };
1564 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1565 for (j = 0; j < 3; j++) {
1566 if (is_last_report) {
1567 error = enc->error[j];
1568 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1569 } else {
1570 error = enc->coded_frame->error[j];
1571 scale = enc->width * enc->height * 255.0 * 255.0;
1572 }
1573 if (j)
1574 scale /= 4;
1575 error_sum += error;
1576 scale_sum += scale;
1577 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1578 }
1579 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1580 }
1581 vid = 1;
1582 }
1583 /* compute min output value */
1584 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1585 if ((pts < ti1) && (pts > 0))
1586 ti1 = pts;
1587 }
1588 if (ti1 < 0.01)
1589 ti1 = 0.01;
1590
1591 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1592
1593 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1594 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1595 (double)total_size / 1024, ti1, bitrate);
1596
1597 if (nb_frames_dup || nb_frames_drop)
1598 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1599 nb_frames_dup, nb_frames_drop);
1600
1601 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1602
1603 fflush(stderr);
1604
1605 if (is_last_report) {
1606 int64_t raw= audio_size + video_size + extra_size;
1607 av_log(NULL, AV_LOG_INFO, "\n");
1608 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1609 video_size / 1024.0,
1610 audio_size / 1024.0,
1611 extra_size / 1024.0,
1612 100.0 * (total_size - raw) / raw
1613 );
1614 }
1615 }
1616
1617 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1618 {
1619 int i, ret;
1620
1621 for (i = 0; i < nb_ostreams; i++) {
1622 OutputStream *ost = &ost_table[i];
1623 AVCodecContext *enc = ost->st->codec;
1624 AVFormatContext *os = output_files[ost->file_index].ctx;
1625
1626 if (!ost->encoding_needed)
1627 continue;
1628
1629 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1630 continue;
1631 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1632 continue;
1633
1634 for (;;) {
1635 AVPacket pkt;
1636 int fifo_bytes;
1637 av_init_packet(&pkt);
1638 pkt.stream_index = ost->index;
1639
1640 switch (ost->st->codec->codec_type) {
1641 case AVMEDIA_TYPE_AUDIO:
1642 fifo_bytes = av_fifo_size(ost->fifo);
1643 ret = 0;
1644 /* encode any samples remaining in fifo */
1645 if (fifo_bytes > 0) {
1646 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1647 int fs_tmp = enc->frame_size;
1648
1649 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1650 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1651 enc->frame_size = fifo_bytes / (osize * enc->channels);
1652 } else { /* pad */
1653 int frame_bytes = enc->frame_size*osize*enc->channels;
1654 if (allocated_audio_buf_size < frame_bytes)
1655 exit_program(1);
1656 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1657 }
1658
1659 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1660 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1661 ost->st->time_base.num, enc->sample_rate);
1662 enc->frame_size = fs_tmp;
1663 }
1664 if (ret <= 0) {
1665 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1666 }
1667 if (ret < 0) {
1668 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1669 exit_program(1);
1670 }
1671 audio_size += ret;
1672 pkt.flags |= AV_PKT_FLAG_KEY;
1673 break;
1674 case AVMEDIA_TYPE_VIDEO:
1675 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1676 if (ret < 0) {
1677 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1678 exit_program(1);
1679 }
1680 video_size += ret;
1681 if (enc->coded_frame && enc->coded_frame->key_frame)
1682 pkt.flags |= AV_PKT_FLAG_KEY;
1683 if (ost->logfile && enc->stats_out) {
1684 fprintf(ost->logfile, "%s", enc->stats_out);
1685 }
1686 break;
1687 default:
1688 ret = -1;
1689 }
1690
1691 if (ret <= 0)
1692 break;
1693 pkt.data = bit_buffer;
1694 pkt.size = ret;
1695 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1696 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1697 write_frame(os, &pkt, ost);
1698 }
1699 }
1700 }
1701
1702 /*
1703 * Check whether a packet from ist should be written into ost at this time
1704 */
1705 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1706 {
1707 OutputFile *of = &output_files[ost->file_index];
1708 int ist_index = ist - input_streams;
1709
1710 if (ost->source_index != ist_index)
1711 return 0;
1712
1713 if (of->start_time && ist->pts < of->start_time)
1714 return 0;
1715
1716 if (of->recording_time != INT64_MAX &&
1717 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1718 (AVRational){ 1, 1000000 }) >= 0) {
1719 ost->is_past_recording_time = 1;
1720 return 0;
1721 }
1722
1723 return 1;
1724 }
1725
1726 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1727 {
1728 OutputFile *of = &output_files[ost->file_index];
1729 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1730 AVPacket opkt;
1731
1732 av_init_packet(&opkt);
1733
1734 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1735 !ost->copy_initial_nonkeyframes)
1736 return;
1737
1738 /* force the input stream PTS */
1739 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1740 audio_size += pkt->size;
1741 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1742 video_size += pkt->size;
1743 ost->sync_opts++;
1744 }
1745
1746 opkt.stream_index = ost->index;
1747 if (pkt->pts != AV_NOPTS_VALUE)
1748 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1749 else
1750 opkt.pts = AV_NOPTS_VALUE;
1751
1752 if (pkt->dts == AV_NOPTS_VALUE)
1753 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1754 else
1755 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1756 opkt.dts -= ost_tb_start_time;
1757
1758 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1759 opkt.flags = pkt->flags;
1760
1761 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1762 if ( ost->st->codec->codec_id != CODEC_ID_H264
1763 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1764 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1765 ) {
1766 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1767 opkt.destruct = av_destruct_packet;
1768 } else {
1769 opkt.data = pkt->data;
1770 opkt.size = pkt->size;
1771 }
1772
1773 write_frame(of->ctx, &opkt, ost);
1774 ost->st->codec->frame_number++;
1775 av_free_packet(&opkt);
1776 }
1777
1778 static void rate_emu_sleep(InputStream *ist)
1779 {
1780 if (input_files[ist->file_index].rate_emu) {
1781 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1782 int64_t now = av_gettime() - ist->start;
1783 if (pts > now)
1784 usleep(pts - now);
1785 }
1786 }
1787
1788 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1789 {
1790 AVFrame *decoded_frame;
1791 AVCodecContext *avctx = ist->st->codec;
1792 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1793 int i, ret;
1794
1795 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1796 return AVERROR(ENOMEM);
1797 else
1798 avcodec_get_frame_defaults(ist->decoded_frame);
1799 decoded_frame = ist->decoded_frame;
1800
1801 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1802 if (ret < 0) {
1803 return ret;
1804 }
1805
1806 if (!*got_output) {
1807 /* no audio frame */
1808 return ret;
1809 }
1810
1811 /* if the decoder provides a pts, use it instead of the last packet pts.
1812 the decoder could be delaying output by a packet or more. */
1813 if (decoded_frame->pts != AV_NOPTS_VALUE)
1814 ist->next_pts = decoded_frame->pts;
1815
1816 /* increment next_pts to use for the case where the input stream does not
1817 have timestamps or there are multiple frames in the packet */
1818 ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1819 avctx->sample_rate;
1820
1821 // preprocess audio (volume)
1822 if (audio_volume != 256) {
1823 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1824 void *samples = decoded_frame->data[0];
1825 switch (avctx->sample_fmt) {
1826 case AV_SAMPLE_FMT_U8:
1827 {
1828 uint8_t *volp = samples;
1829 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1830 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1831 *volp++ = av_clip_uint8(v);
1832 }
1833 break;
1834 }
1835 case AV_SAMPLE_FMT_S16:
1836 {
1837 int16_t *volp = samples;
1838 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1839 int v = ((*volp) * audio_volume + 128) >> 8;
1840 *volp++ = av_clip_int16(v);
1841 }
1842 break;
1843 }
1844 case AV_SAMPLE_FMT_S32:
1845 {
1846 int32_t *volp = samples;
1847 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1848 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1849 *volp++ = av_clipl_int32(v);
1850 }
1851 break;
1852 }
1853 case AV_SAMPLE_FMT_FLT:
1854 {
1855 float *volp = samples;
1856 float scale = audio_volume / 256.f;
1857 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1858 *volp++ *= scale;
1859 }
1860 break;
1861 }
1862 case AV_SAMPLE_FMT_DBL:
1863 {
1864 double *volp = samples;
1865 double scale = audio_volume / 256.;
1866 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1867 *volp++ *= scale;
1868 }
1869 break;
1870 }
1871 default:
1872 av_log(NULL, AV_LOG_FATAL,
1873 "Audio volume adjustment on sample format %s is not supported.\n",
1874 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1875 exit_program(1);
1876 }
1877 }
1878
1879 rate_emu_sleep(ist);
1880
1881 for (i = 0; i < nb_output_streams; i++) {
1882 OutputStream *ost = &output_streams[i];
1883
1884 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1885 continue;
1886 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1887 }
1888
1889 return ret;
1890 }
1891
1892 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1893 {
1894 AVFrame *decoded_frame, *filtered_frame = NULL;
1895 void *buffer_to_free = NULL;
1896 int i, ret = 0;
1897 float quality;
1898 #if CONFIG_AVFILTER
1899 int frame_available = 1;
1900 #endif
1901
1902 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1903 return AVERROR(ENOMEM);
1904 else
1905 avcodec_get_frame_defaults(ist->decoded_frame);
1906 decoded_frame = ist->decoded_frame;
1907 pkt->pts = *pkt_pts;
1908 pkt->dts = ist->pts;
1909 *pkt_pts = AV_NOPTS_VALUE;
1910
1911 ret = avcodec_decode_video2(ist->st->codec,
1912 decoded_frame, got_output, pkt);
1913 if (ret < 0)
1914 return ret;
1915
1916 quality = same_quant ? decoded_frame->quality : 0;
1917 if (!*got_output) {
1918 /* no picture yet */
1919 return ret;
1920 }
1921 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1922 decoded_frame->pkt_dts);
1923 if (pkt->duration)
1924 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1925 else if (ist->st->codec->time_base.num != 0) {
1926 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1927 ist->st->codec->ticks_per_frame;
1928 ist->next_pts += ((int64_t)AV_TIME_BASE *
1929 ist->st->codec->time_base.num * ticks) /
1930 ist->st->codec->time_base.den;
1931 }
1932 pkt->size = 0;
1933 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1934
1935 rate_emu_sleep(ist);
1936
1937 for (i = 0; i < nb_output_streams; i++) {
1938 OutputStream *ost = &output_streams[i];
1939 int frame_size;
1940
1941 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1942 continue;
1943
1944 #if CONFIG_AVFILTER
1945 if (ist->st->sample_aspect_ratio.num)
1946 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1947 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1948 FrameBuffer *buf = decoded_frame->opaque;
1949 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1950 decoded_frame->data, decoded_frame->linesize,
1951 AV_PERM_READ | AV_PERM_PRESERVE,
1952 ist->st->codec->width, ist->st->codec->height,
1953 ist->st->codec->pix_fmt);
1954
1955 avfilter_copy_frame_props(fb, decoded_frame);
1956 fb->pts = ist->pts;
1957 fb->buf->priv = buf;
1958 fb->buf->free = filter_release_buffer;
1959
1960 buf->refcount++;
1961 av_buffersrc_buffer(ost->input_video_filter, fb);
1962 } else
1963 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
1964 ist->pts, decoded_frame->sample_aspect_ratio);
1965
1966 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1967 av_free(buffer_to_free);
1968 return AVERROR(ENOMEM);
1969 } else
1970 avcodec_get_frame_defaults(ist->filtered_frame);
1971 filtered_frame = ist->filtered_frame;
1972
1973 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1974 while (frame_available) {
1975 AVRational ist_pts_tb;
1976 if (ost->output_video_filter)
1977 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1978 if (ost->picref)
1979 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1980 if (ost->picref->video && !ost->frame_aspect_ratio)
1981 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1982 #else
1983 filtered_frame = decoded_frame;
1984 #endif
1985
1986 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1987 same_quant ? quality : ost->st->codec->global_quality);
1988 if (vstats_filename && frame_size)
1989 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1990 #if CONFIG_AVFILTER
1991 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1992 if (ost->picref)
1993 avfilter_unref_buffer(ost->picref);
1994 }
1995 #endif
1996 }
1997
1998 av_free(buffer_to_free);
1999 return ret;
2000 }
2001
2002 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2003 {
2004 AVSubtitle subtitle;
2005 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2006 &subtitle, got_output, pkt);
2007 if (ret < 0)
2008 return ret;
2009 if (!*got_output)
2010 return ret;
2011
2012 rate_emu_sleep(ist);
2013
2014 for (i = 0; i < nb_output_streams; i++) {
2015 OutputStream *ost = &output_streams[i];
2016
2017 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2018 continue;
2019
2020 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2021 }
2022
2023 avsubtitle_free(&subtitle);
2024 return ret;
2025 }
2026
2027 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2028 static int output_packet(InputStream *ist,
2029 OutputStream *ost_table, int nb_ostreams,
2030 const AVPacket *pkt)
2031 {
2032 int i;
2033 int got_output;
2034 int64_t pkt_pts = AV_NOPTS_VALUE;
2035 AVPacket avpkt;
2036
2037 if (ist->next_pts == AV_NOPTS_VALUE)
2038 ist->next_pts = ist->pts;
2039
2040 if (pkt == NULL) {
2041 /* EOF handling */
2042 av_init_packet(&avpkt);
2043 avpkt.data = NULL;
2044 avpkt.size = 0;
2045 goto handle_eof;
2046 } else {
2047 avpkt = *pkt;
2048 }
2049
2050 if (pkt->dts != AV_NOPTS_VALUE)
2051 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2052 if (pkt->pts != AV_NOPTS_VALUE)
2053 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2054
2055 // while we have more to decode or while the decoder did output something on EOF
2056 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2057 int ret = 0;
2058 handle_eof:
2059
2060 ist->pts = ist->next_pts;
2061
2062 if (avpkt.size && avpkt.size != pkt->size) {
2063 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2064 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2065 ist->showed_multi_packet_warning = 1;
2066 }
2067
2068 switch (ist->st->codec->codec_type) {
2069 case AVMEDIA_TYPE_AUDIO:
2070 ret = transcode_audio (ist, &avpkt, &got_output);
2071 break;
2072 case AVMEDIA_TYPE_VIDEO:
2073 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2074 break;
2075 case AVMEDIA_TYPE_SUBTITLE:
2076 ret = transcode_subtitles(ist, &avpkt, &got_output);
2077 break;
2078 default:
2079 return -1;
2080 }
2081
2082 if (ret < 0)
2083 return ret;
2084 // touch data and size only if not EOF
2085 if (pkt) {
2086 avpkt.data += ret;
2087 avpkt.size -= ret;
2088 }
2089 if (!got_output) {
2090 continue;
2091 }
2092 }
2093
2094 /* handle stream copy */
2095 if (!ist->decoding_needed) {
2096 rate_emu_sleep(ist);
2097 ist->pts = ist->next_pts;
2098 switch (ist->st->codec->codec_type) {
2099 case AVMEDIA_TYPE_AUDIO:
2100 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2101 ist->st->codec->sample_rate;
2102 break;
2103 case AVMEDIA_TYPE_VIDEO:
2104 if (ist->st->codec->time_base.num != 0) {
2105 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2106 ist->next_pts += ((int64_t)AV_TIME_BASE *
2107 ist->st->codec->time_base.num * ticks) /
2108 ist->st->codec->time_base.den;
2109 }
2110 break;
2111 }
2112 }
2113 for (i = 0; pkt && i < nb_ostreams; i++) {
2114 OutputStream *ost = &ost_table[i];
2115
2116 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2117 continue;
2118
2119 do_streamcopy(ist, ost, pkt);
2120 }
2121
2122 return 0;
2123 }
2124
2125 static void print_sdp(OutputFile *output_files, int n)
2126 {
2127 char sdp[2048];
2128 int i;
2129 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2130
2131 if (!avc)
2132 exit_program(1);
2133 for (i = 0; i < n; i++)
2134 avc[i] = output_files[i].ctx;
2135
2136 av_sdp_create(avc, n, sdp, sizeof(sdp));
2137 printf("SDP:\n%s\n", sdp);
2138 fflush(stdout);
2139 av_freep(&avc);
2140 }
2141
2142 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2143 char *error, int error_len)
2144 {
2145 int i;
2146 InputStream *ist = &input_streams[ist_index];
2147 if (ist->decoding_needed) {
2148 AVCodec *codec = ist->dec;
2149 if (!codec) {
2150 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2151 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2152 return AVERROR(EINVAL);
2153 }
2154
2155 /* update requested sample format for the decoder based on the
2156 corresponding encoder sample format */
2157 for (i = 0; i < nb_output_streams; i++) {
2158 OutputStream *ost = &output_streams[i];
2159 if (ost->source_index == ist_index) {
2160 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2161 break;
2162 }
2163 }
2164
2165 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2166 ist->st->codec->get_buffer = codec_get_buffer;
2167 ist->st->codec->release_buffer = codec_release_buffer;
2168 ist->st->codec->opaque = ist;
2169 }
2170
2171 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2172 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2173 ist->file_index, ist->st->index);
2174 return AVERROR(EINVAL);
2175 }
2176 assert_codec_experimental(ist->st->codec, 0);
2177 assert_avoptions(ist->opts);
2178 }
2179
2180 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;
2181 ist->next_pts = AV_NOPTS_VALUE;
2182 init_pts_correction(&ist->pts_ctx);
2183 ist->is_start = 1;
2184
2185 return 0;
2186 }
2187
2188 static int transcode_init(OutputFile *output_files,
2189 int nb_output_files,
2190 InputFile *input_files,
2191 int nb_input_files)
2192 {
2193 int ret = 0, i, j, k;
2194 AVFormatContext *oc;
2195 AVCodecContext *codec, *icodec;
2196 OutputStream *ost;
2197 InputStream *ist;
2198 char error[1024];
2199 int want_sdp = 1;
2200
2201 /* init framerate emulation */
2202 for (i = 0; i < nb_input_files; i++) {
2203 InputFile *ifile = &input_files[i];
2204 if (ifile->rate_emu)
2205 for (j = 0; j < ifile->nb_streams; j++)
2206 input_streams[j + ifile->ist_index].start = av_gettime();
2207 }
2208
2209 /* output stream init */
2210 for (i = 0; i < nb_output_files; i++) {
2211 oc = output_files[i].ctx;
2212 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2213 av_dump_format(oc, i, oc->filename, 1);
2214 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2215 return AVERROR(EINVAL);
2216 }
2217 }
2218
2219 /* for each output stream, we compute the right encoding parameters */
2220 for (i = 0; i < nb_output_streams; i++) {
2221 ost = &output_streams[i];
2222 oc = output_files[ost->file_index].ctx;
2223 ist = &input_streams[ost->source_index];
2224
2225 if (ost->attachment_filename)
2226 continue;
2227
2228 codec = ost->st->codec;
2229 icodec = ist->st->codec;
2230
2231 ost->st->disposition = ist->st->disposition;
2232 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2233 codec->chroma_sample_location = icodec->chroma_sample_location;
2234
2235 if (ost->stream_copy) {
2236 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2237
2238 if (extra_size > INT_MAX) {
2239 return AVERROR(EINVAL);
2240 }
2241
2242 /* if stream_copy is selected, no need to decode or encode */
2243 codec->codec_id = icodec->codec_id;
2244 codec->codec_type = icodec->codec_type;
2245
2246 if (!codec->codec_tag) {
2247 if (!oc->oformat->codec_tag ||
2248 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2249 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2250 codec->codec_tag = icodec->codec_tag;
2251 }
2252
2253 codec->bit_rate = icodec->bit_rate;
2254 codec->rc_max_rate = icodec->rc_max_rate;
2255 codec->rc_buffer_size = icodec->rc_buffer_size;
2256 codec->field_order = icodec->field_order;
2257 codec->extradata = av_mallocz(extra_size);
2258 if (!codec->extradata) {
2259 return AVERROR(ENOMEM);
2260 }
2261 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2262 codec->extradata_size = icodec->extradata_size;
2263 if (!copy_tb) {
2264 codec->time_base = icodec->time_base;
2265 codec->time_base.num *= icodec->ticks_per_frame;
2266 av_reduce(&codec->time_base.num, &codec->time_base.den,
2267 codec->time_base.num, codec->time_base.den, INT_MAX);
2268 } else
2269 codec->time_base = ist->st->time_base;
2270
2271 switch (codec->codec_type) {
2272 case AVMEDIA_TYPE_AUDIO:
2273 if (audio_volume != 256) {
2274 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2275 exit_program(1);
2276 }
2277 codec->channel_layout = icodec->channel_layout;
2278 codec->sample_rate = icodec->sample_rate;
2279 codec->channels = icodec->channels;
2280 codec->frame_size = icodec->frame_size;
2281 codec->audio_service_type = icodec->audio_service_type;
2282 codec->block_align = icodec->block_align;
2283 break;
2284 case AVMEDIA_TYPE_VIDEO:
2285 codec->pix_fmt = icodec->pix_fmt;
2286 codec->width = icodec->width;
2287 codec->height = icodec->height;
2288 codec->has_b_frames = icodec->has_b_frames;
2289 if (!codec->sample_aspect_ratio.num) {
2290 codec->sample_aspect_ratio =
2291 ost->st->sample_aspect_ratio =
2292 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2293 ist->st->codec->sample_aspect_ratio.num ?
2294 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2295 }
2296 break;
2297 case AVMEDIA_TYPE_SUBTITLE:
2298 codec->width = icodec->width;
2299 codec->height = icodec->height;
2300 break;
2301 case AVMEDIA_TYPE_DATA:
2302 case AVMEDIA_TYPE_ATTACHMENT:
2303 break;
2304 default:
2305 abort();
2306 }
2307 } else {
2308 if (!ost->enc)
2309 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2310
2311 ist->decoding_needed = 1;
2312 ost->encoding_needed = 1;
2313
2314 switch (codec->codec_type) {
2315 case AVMEDIA_TYPE_AUDIO:
2316 ost->fifo = av_fifo_alloc(1024);
2317 if (!ost->fifo) {
2318 return AVERROR(ENOMEM);
2319 }
2320 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2321
2322 if (!codec->sample_rate)
2323 codec->sample_rate = icodec->sample_rate;
2324 choose_sample_rate(ost->st, ost->enc);
2325 codec->time_base = (AVRational){ 1, codec->sample_rate };
2326
2327 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2328 codec->sample_fmt = icodec->sample_fmt;
2329 choose_sample_fmt(ost->st, ost->enc);
2330
2331 if (!codec->channels)
2332 codec->channels = icodec->channels;
2333 codec->channel_layout = icodec->channel_layout;
2334 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2335 codec->channel_layout = 0;
2336
2337 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2338 icodec->request_channels = codec-> channels;
2339 ost->resample_sample_fmt = icodec->sample_fmt;
2340 ost->resample_sample_rate = icodec->sample_rate;
2341 ost->resample_channels = icodec->channels;
2342 break;
2343 case AVMEDIA_TYPE_VIDEO:
2344 if (codec->pix_fmt == PIX_FMT_NONE)
2345 codec->pix_fmt = icodec->pix_fmt;
2346 choose_pixel_fmt(ost->st, ost->enc);
2347
2348 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2349 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2350 exit_program(1);
2351 }
2352
2353 if (!codec->width || !codec->height) {
2354 codec->width = icodec->width;
2355 codec->height = icodec->height;
2356 }
2357
2358 ost->video_resample = codec->width != icodec->width ||
2359 codec->height != icodec->height ||
2360 codec->pix_fmt != icodec->pix_fmt;
2361 if (ost->video_resample) {
2362 #if !CONFIG_AVFILTER
2363 avcodec_get_frame_defaults(&ost->pict_tmp);
2364 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2365 codec->width, codec->height)) {
2366 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2367 exit_program(1);
2368 }
2369 ost->img_resample_ctx = sws_getContext(
2370 icodec->width,
2371 icodec->height,
2372 icodec->pix_fmt,
2373 codec->width,
2374 codec->height,
2375 codec->pix_fmt,
2376 ost->sws_flags, NULL, NULL, NULL);
2377 if (ost->img_resample_ctx == NULL) {
2378 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2379 exit_program(1);
2380 }
2381 #endif
2382 codec->bits_per_raw_sample = 0;
2383 }
2384
2385 ost->resample_height = icodec->height;
2386 ost->resample_width = icodec->width;
2387 ost->resample_pix_fmt = icodec->pix_fmt;
2388
2389 if (!ost->frame_rate.num)
2390 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2391 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2392 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2393 ost->frame_rate = ost->enc->supported_framerates[idx];
2394 }
2395 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2396
2397 #if CONFIG_AVFILTER
2398 if (configure_video_filters(ist, ost)) {
2399 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2400 exit(1);
2401 }
2402 #endif
2403 break;
2404 case AVMEDIA_TYPE_SUBTITLE:
2405 break;
2406 default:
2407 abort();
2408 break;
2409 }
2410 /* two pass mode */
2411 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2412 char logfilename[1024];
2413 FILE *f;
2414
2415 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2416 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2417 i);
2418 if (codec->flags & CODEC_FLAG_PASS1) {
2419 f = fopen(logfilename, "wb");
2420 if (!f) {
2421 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2422 logfilename, strerror(errno));
2423 exit_program(1);
2424 }
2425 ost->logfile = f;
2426 } else {
2427 char *logbuffer;
2428 size_t logbuffer_size;
2429 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2430 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2431 logfilename);
2432 exit_program(1);
2433 }
2434 codec->stats_in = logbuffer;
2435 }
2436 }
2437 }
2438 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2439 int size = codec->width * codec->height;
2440 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2441 }
2442 }
2443
2444 if (!bit_buffer)
2445 bit_buffer = av_malloc(bit_buffer_size);
2446 if (!bit_buffer) {
2447 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2448 bit_buffer_size);
2449 return AVERROR(ENOMEM);
2450 }
2451
2452 /* open each encoder */
2453 for (i = 0; i < nb_output_streams; i++) {
2454 ost = &output_streams[i];
2455 if (ost->encoding_needed) {
2456 AVCodec *codec = ost->enc;
2457 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2458 if (!codec) {
2459 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2460 ost->st->codec->codec_id, ost->file_index, ost->index);
2461 ret = AVERROR(EINVAL);
2462 goto dump_format;
2463 }
2464 if (dec->subtitle_header) {
2465 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2466 if (!ost->st->codec->subtitle_header) {
2467 ret = AVERROR(ENOMEM);
2468 goto dump_format;
2469 }
2470 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2471 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2472 }
2473 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2474 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2475 ost->file_index, ost->index);
2476 ret = AVERROR(EINVAL);
2477 goto dump_format;
2478 }
2479 assert_codec_experimental(ost->st->codec, 1);
2480 assert_avoptions(ost->opts);
2481 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2482 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2483 "It takes bits/s as argument, not kbits/s\n");
2484 extra_size += ost->st->codec->extradata_size;
2485
2486 if (ost->st->codec->me_threshold)
2487 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2488 }
2489 }
2490
2491 /* init input streams */
2492 for (i = 0; i < nb_input_streams; i++)
2493 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2494 goto dump_format;
2495
2496 /* discard unused programs */
2497 for (i = 0; i < nb_input_files; i++) {
2498 InputFile *ifile = &input_files[i];
2499 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2500 AVProgram *p = ifile->ctx->programs[j];
2501 int discard = AVDISCARD_ALL;
2502
2503 for (k = 0; k < p->nb_stream_indexes; k++)
2504 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2505 discard = AVDISCARD_DEFAULT;
2506 break;
2507 }
2508 p->discard = discard;
2509 }
2510 }
2511
2512 /* open files and write file headers */
2513 for (i = 0; i < nb_output_files; i++) {
2514 oc = output_files[i].ctx;
2515 oc->interrupt_callback = int_cb;
2516 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2517 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2518 ret = AVERROR(EINVAL);
2519 goto dump_format;
2520 }
2521 assert_avoptions(output_files[i].opts);
2522 if (strcmp(oc->oformat->name, "rtp")) {
2523 want_sdp = 0;
2524 }
2525 }
2526
2527 dump_format:
2528 /* dump the file output parameters - cannot be done before in case
2529 of stream copy */
2530 for (i = 0; i < nb_output_files; i++) {
2531 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2532 }
2533
2534 /* dump the stream mapping */
2535 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2536 for (i = 0; i < nb_output_streams; i++) {
2537 ost = &output_streams[i];
2538
2539 if (ost->attachment_filename) {
2540 /* an attached file */
2541 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2542 ost->attachment_filename, ost->file_index, ost->index);
2543 continue;
2544 }
2545 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2546 input_streams[ost->source_index].file_index,
2547 input_streams[ost->source_index].st->index,
2548 ost->file_index,
2549 ost->index);
2550 if (ost->sync_ist != &input_streams[ost->source_index])
2551 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2552 ost->sync_ist->file_index,
2553 ost->sync_ist->st->index);
2554 if (ost->stream_copy)
2555 av_log(NULL, AV_LOG_INFO, " (copy)");
2556 else
2557 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2558 input_streams[ost->source_index].dec->name : "?",
2559 ost->enc ? ost->enc->name : "?");
2560 av_log(NULL, AV_LOG_INFO, "\n");
2561 }
2562
2563 if (ret) {
2564 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2565 return ret;
2566 }
2567
2568 if (want_sdp) {
2569 print_sdp(output_files, nb_output_files);
2570 }
2571
2572 return 0;
2573 }
2574
2575 /*
2576 * The following code is the main loop of the file converter
2577 */
2578 static int transcode(OutputFile *output_files,
2579 int nb_output_files,
2580 InputFile *input_files,
2581 int nb_input_files)
2582 {
2583 int ret, i;
2584 AVFormatContext *is, *os;
2585 OutputStream *ost;
2586 InputStream *ist;
2587 uint8_t *no_packet;
2588 int no_packet_count = 0;
2589 int64_t timer_start;
2590
2591 if (!(no_packet = av_mallocz(nb_input_files)))
2592 exit_program(1);
2593
2594 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2595 if (ret < 0)
2596 goto fail;
2597
2598 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2599 term_init();
2600
2601 timer_start = av_gettime();
2602
2603 for (; received_sigterm == 0;) {
2604 int file_index, ist_index;
2605 AVPacket pkt;
2606 int64_t ipts_min;
2607 double opts_min;
2608
2609 ipts_min = INT64_MAX;
2610 opts_min = 1e100;
2611
2612 /* select the stream that we must read now by looking at the
2613 smallest output pts */
2614 file_index = -1;
2615 for (i = 0; i < nb_output_streams; i++) {
2616 OutputFile *of;
2617 int64_t ipts;
2618 double opts;
2619 ost = &output_streams[i];
2620 of = &output_files[ost->file_index];
2621 os = output_files[ost->file_index].ctx;
2622 ist = &input_streams[ost->source_index];
2623 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2624 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2625 continue;
2626 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2627 ipts = ist->pts;
2628 if (!input_files[ist->file_index].eof_reached) {
2629 if (ipts < ipts_min) {
2630 ipts_min = ipts;
2631 if (input_sync)
2632 file_index = ist->file_index;
2633 }
2634 if (opts < opts_min) {
2635 opts_min = opts;
2636 if (!input_sync) file_index = ist->file_index;
2637 }
2638 }
2639 if (ost->frame_number >= ost->max_frames) {
2640 int j;
2641 for (j = 0; j < of->ctx->nb_streams; j++)
2642 output_streams[of->ost_index + j].is_past_recording_time = 1;
2643 continue;
2644 }
2645 }
2646 /* if none, if is finished */
2647 if (file_index < 0) {
2648 if (no_packet_count) {
2649 no_packet_count = 0;
2650 memset(no_packet, 0, nb_input_files);
2651 usleep(10000);
2652 continue;
2653 }
2654 break;
2655 }
2656
2657 /* read a frame from it and output it in the fifo */
2658 is = input_files[file_index].ctx;
2659 ret = av_read_frame(is, &pkt);
2660 if (ret == AVERROR(EAGAIN)) {
2661 no_packet[file_index] = 1;
2662 no_packet_count++;
2663 continue;
2664 }
2665 if (ret < 0) {
2666 input_files[file_index].eof_reached = 1;
2667 if (opt_shortest)
2668 break;
2669 else
2670 continue;
2671 }
2672
2673 no_packet_count = 0;
2674 memset(no_packet, 0, nb_input_files);
2675
2676 if (do_pkt_dump) {
2677 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2678 is->streams[pkt.stream_index]);
2679 }
2680 /* the following test is needed in case new streams appear
2681 dynamically in stream : we ignore them */
2682 if (pkt.stream_index >= input_files[file_index].nb_streams)
2683 goto discard_packet;
2684 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2685 ist = &input_streams[ist_index];
2686 if (ist->discard)
2687 goto discard_packet;
2688
2689 if (pkt.dts != AV_NOPTS_VALUE)
2690 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2691 if (pkt.pts != AV_NOPTS_VALUE)
2692 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2693
2694 if (pkt.pts != AV_NOPTS_VALUE)
2695 pkt.pts *= ist->ts_scale;
2696 if (pkt.dts != AV_NOPTS_VALUE)
2697 pkt.dts *= ist->ts_scale;
2698
2699 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2700 // ist->next_pts,
2701 // pkt.dts, input_files[ist->file_index].ts_offset,
2702 // ist->st->codec->codec_type);
2703 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2704 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2705 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2706 int64_t delta = pkt_dts - ist->next_pts;
2707 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2708 input_files[ist->file_index].ts_offset -= delta;
2709 av_log(NULL, AV_LOG_DEBUG,
2710 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2711 delta, input_files[ist->file_index].ts_offset);
2712 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2713 if (pkt.pts != AV_NOPTS_VALUE)
2714 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2715 }
2716 }
2717
2718 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2719 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2720
2721 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2722 ist->file_index, ist->st->index);
2723 if (exit_on_error)
2724 exit_program(1);
2725 av_free_packet(&pkt);
2726 continue;
2727 }
2728
2729 discard_packet:
2730 av_free_packet(&pkt);
2731
2732 /* dump report by using the output first video and audio streams */
2733 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2734 }
2735
2736 /* at the end of stream, we must flush the decoder buffers */
2737 for (i = 0; i < nb_input_streams; i++) {
2738 ist = &input_streams[i];
2739 if (ist->decoding_needed) {
2740 output_packet(ist, output_streams, nb_output_streams, NULL);
2741 }
2742 }
2743 flush_encoders(output_streams, nb_output_streams);
2744
2745 term_exit();
2746
2747 /* write the trailer if needed and close file */
2748 for (i = 0; i < nb_output_files; i++) {
2749 os = output_files[i].ctx;
2750 av_write_trailer(os);
2751 }
2752
2753 /* dump report by using the first video and audio streams */
2754 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2755
2756 /* close each encoder */
2757 for (i = 0; i < nb_output_streams; i++) {
2758 ost = &output_streams[i];
2759 if (ost->encoding_needed) {
2760 av_freep(&ost->st->codec->stats_in);
2761 avcodec_close(ost->st->codec);
2762 }
2763 #if CONFIG_AVFILTER
2764 avfilter_graph_free(&ost->graph);
2765 #endif
2766 }
2767
2768 /* close each decoder */
2769 for (i = 0; i < nb_input_streams; i++) {
2770 ist = &input_streams[i];
2771 if (ist->decoding_needed) {
2772 avcodec_close(ist->st->codec);
2773 }
2774 }
2775
2776 /* finished ! */
2777 ret = 0;
2778
2779 fail:
2780 av_freep(&bit_buffer);
2781 av_freep(&no_packet);
2782
2783 if (output_streams) {
2784 for (i = 0; i < nb_output_streams; i++) {
2785 ost = &output_streams[i];
2786 if (ost) {
2787 if (ost->stream_copy)
2788 av_freep(&ost->st->codec->extradata);
2789 if (ost->logfile) {
2790 fclose(ost->logfile);
2791 ost->logfile = NULL;
2792 }
2793 av_fifo_free(ost->fifo); /* works even if fifo is not
2794 initialized but set to zero */
2795 av_freep(&ost->st->codec->subtitle_header);
2796 av_free(ost->pict_tmp.data[0]);
2797 av_free(ost->forced_kf_pts);
2798 if (ost->video_resample)
2799 sws_freeContext(ost->img_resample_ctx);
2800 if (ost->resample)
2801 audio_resample_close(ost->resample);
2802 if (ost->reformat_ctx)
2803 av_audio_convert_free(ost->reformat_ctx);
2804 av_dict_free(&ost->opts);
2805 }
2806 }
2807 }
2808 return ret;
2809 }
2810
2811 static double parse_frame_aspect_ratio(const char *arg)
2812 {
2813 int x = 0, y = 0;
2814 double ar = 0;
2815 const char *p;
2816 char *end;
2817
2818 p = strchr(arg, ':');
2819 if (p) {
2820 x = strtol(arg, &end, 10);
2821 if (end == p)
2822 y = strtol(end + 1, &end, 10);
2823 if (x > 0 && y > 0)
2824 ar = (double)x / (double)y;
2825 } else
2826 ar = strtod(arg, NULL);
2827
2828 if (!ar) {
2829 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2830 exit_program(1);
2831 }
2832 return ar;
2833 }
2834
2835 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2836 {
2837 return parse_option(o, "codec:a", arg, options);
2838 }
2839
2840 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2841 {
2842 return parse_option(o, "codec:v", arg, options);
2843 }
2844
2845 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2846 {
2847 return parse_option(o, "codec:s", arg, options);
2848 }
2849
2850 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2851 {
2852 return parse_option(o, "codec:d", arg, options);
2853 }
2854
2855 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2856 {
2857 StreamMap *m = NULL;
2858 int i, negative = 0, file_idx;
2859 int sync_file_idx = -1, sync_stream_idx;
2860 char *p, *sync;
2861 char *map;
2862
2863 if (*arg == '-') {
2864 negative = 1;
2865 arg++;
2866 }
2867 map = av_strdup(arg);
2868
2869 /* parse sync stream first, just pick first matching stream */
2870 if (sync = strchr(map, ',')) {
2871 *sync = 0;
2872 sync_file_idx = strtol(sync + 1, &sync, 0);
2873 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2874 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2875 exit_program(1);
2876 }
2877 if (*sync)
2878 sync++;
2879 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2880 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2881 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2882 sync_stream_idx = i;
2883 break;
2884 }
2885 if (i == input_files[sync_file_idx].nb_streams) {
2886 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2887 "match any streams.\n", arg);
2888 exit_program(1);
2889 }
2890 }
2891
2892
2893 file_idx = strtol(map, &p, 0);
2894 if (file_idx >= nb_input_files || file_idx < 0) {
2895 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2896 exit_program(1);
2897 }
2898 if (negative)
2899 /* disable some already defined maps */
2900 for (i = 0; i < o->nb_stream_maps; i++) {
2901 m = &o->stream_maps[i];
2902 if (file_idx == m->file_index &&
2903 check_stream_specifier(input_files[m->file_index].ctx,
2904 input_files[m->file_index].ctx->streams[m->stream_index],
2905 *p == ':' ? p + 1 : p) > 0)
2906 m->disabled = 1;
2907 }
2908 else
2909 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2910 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2911 *p == ':' ? p + 1 : p) <= 0)
2912 continue;
2913 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2914 &o->nb_stream_maps, o->nb_stream_maps + 1);
2915 m = &o->stream_maps[o->nb_stream_maps - 1];
2916
2917 m->file_index = file_idx;
2918 m->stream_index = i;
2919
2920 if (sync_file_idx >= 0) {
2921 m->sync_file_index = sync_file_idx;
2922 m->sync_stream_index = sync_stream_idx;
2923 } else {
2924 m->sync_file_index = file_idx;
2925 m->sync_stream_index = i;
2926 }
2927 }
2928
2929 if (!m) {
2930 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2931 exit_program(1);
2932 }
2933
2934 av_freep(&map);
2935 return 0;
2936 }
2937
2938 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2939 {
2940 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2941 &o->nb_attachments, o->nb_attachments + 1);
2942 o->attachments[o->nb_attachments - 1] = arg;
2943 return 0;
2944 }
2945
2946 /**
2947 * Parse a metadata specifier in arg.
2948 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2949 * @param index for type c/p, chapter/program index is written here
2950 * @param stream_spec for type s, the stream specifier is written here
2951 */
2952 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2953 {
2954 if (*arg) {
2955 *type = *arg;
2956 switch (*arg) {
2957 case 'g':
2958 break;
2959 case 's':
2960 if (*(++arg) && *arg != ':') {
2961 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2962 exit_program(1);
2963 }
2964 *stream_spec = *arg == ':' ? arg + 1 : "";
2965 break;
2966 case 'c':
2967 case 'p':
2968 if (*(++arg) == ':')
2969 *index = strtol(++arg, NULL, 0);
2970 break;
2971 default:
2972 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2973 exit_program(1);
2974 }
2975 } else
2976 *type = 'g';
2977 }
2978
2979 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2980 {
2981 AVDictionary **meta_in = NULL;
2982 AVDictionary **meta_out;
2983 int i, ret = 0;
2984 char type_in, type_out;
2985 const char *istream_spec = NULL, *ostream_spec = NULL;
2986 int idx_in = 0, idx_out = 0;
2987
2988 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
2989 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2990
2991 if (type_in == 'g' || type_out == 'g')
2992 o->metadata_global_manual = 1;
2993 if (type_in == 's' || type_out == 's')
2994 o->metadata_streams_manual = 1;
2995 if (type_in == 'c' || type_out == 'c')
2996 o->metadata_chapters_manual = 1;
2997
2998 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2999 if ((index) < 0 || (index) >= (nb_elems)) {\
3000 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3001 (desc), (index));\
3002 exit_program(1);\
3003 }
3004
3005 #define SET_DICT(type, meta, context, index)\
3006 switch (type) {\
3007 case 'g':\
3008 meta = &context->metadata;\
3009 break;\
3010 case 'c':\
3011 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3012 meta = &context->chapters[index]->metadata;\
3013 break;\
3014 case 'p':\
3015 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3016 meta = &context->programs[index]->metadata;\
3017 break;\
3018 }\
3019
3020 SET_DICT(type_in, meta_in, ic, idx_in);
3021 SET_DICT(type_out, meta_out, oc, idx_out);
3022
3023 /* for input streams choose first matching stream */
3024 if (type_in == 's') {
3025 for (i = 0; i < ic->nb_streams; i++) {
3026 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3027 meta_in = &ic->streams[i]->metadata;
3028 break;
3029 } else if (ret < 0)
3030 exit_program(1);
3031 }
3032 if (!meta_in) {
3033 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3034 exit_program(1);
3035 }
3036 }
3037
3038 if (type_out == 's') {
3039 for (i = 0; i < oc->nb_streams; i++) {
3040 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3041 meta_out = &oc->streams[i]->metadata;
3042 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3043 } else if (ret < 0)
3044 exit_program(1);
3045 }
3046 } else
3047 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3048
3049 return 0;
3050 }
3051
3052 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3053 {
3054 const char *codec_string = encoder ? "encoder" : "decoder";
3055 AVCodec *codec;
3056
3057 codec = encoder ?
3058 avcodec_find_encoder_by_name(name) :
3059 avcodec_find_decoder_by_name(name);
3060 if (!codec) {
3061 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3062 exit_program(1);
3063 }
3064 if (codec->type != type) {
3065 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3066 exit_program(1);
3067 }
3068 return codec;
3069 }
3070
3071 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3072 {
3073 char *codec_name = NULL;
3074
3075 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3076 if (codec_name) {
3077 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3078 st->codec->codec_id = codec->id;
3079 return codec;
3080 } else
3081 return avcodec_find_decoder(st->codec->codec_id);
3082 }
3083
3084 /**
3085 * Add all the streams from the given input file to the global
3086 * list of input streams.
3087 */
3088 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3089 {
3090 int i;
3091
3092 for (i = 0; i < ic->nb_streams; i++) {
3093 AVStream *st = ic->streams[i];
3094 AVCodecContext *dec = st->codec;
3095 InputStream *ist;
3096
3097 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3098 ist = &input_streams[nb_input_streams - 1];
3099 ist->st = st;
3100 ist->file_index = nb_input_files;
3101 ist->discard = 1;
3102 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3103
3104 ist->ts_scale = 1.0;
3105 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3106
3107 ist->dec = choose_decoder(o, ic, st);
3108
3109 switch (dec->codec_type) {
3110 case AVMEDIA_TYPE_AUDIO:
3111 if (o->audio_disable)
3112 st->discard = AVDISCARD_ALL;
3113 break;
3114 case AVMEDIA_TYPE_VIDEO:
3115 if (dec->lowres) {
3116 dec->flags |= CODEC_FLAG_EMU_EDGE;
3117 dec->height >>= dec->lowres;
3118 dec->width >>= dec->lowres;
3119 }
3120
3121 if (o->video_disable)
3122 st->discard = AVDISCARD_ALL;
3123 else if (video_discard)
3124 st->discard = video_discard;
3125 break;
3126 case AVMEDIA_TYPE_DATA:
3127 break;
3128 case AVMEDIA_TYPE_SUBTITLE:
3129 if (o->subtitle_disable)
3130 st->discard = AVDISCARD_ALL;
3131 break;
3132 case AVMEDIA_TYPE_ATTACHMENT:
3133 case AVMEDIA_TYPE_UNKNOWN:
3134 break;
3135 default:
3136 abort();
3137 }
3138 }
3139 }
3140
3141 static void assert_file_overwrite(const char *filename)
3142 {
3143 if (!file_overwrite &&
3144 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3145 av_strstart(filename, "file:", NULL))) {
3146 if (avio_check(filename, 0) == 0) {
3147 if (!using_stdin) {
3148 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3149 fflush(stderr);
3150 if (!read_yesno()) {
3151 fprintf(stderr, "Not overwriting - exiting\n");
3152 exit_program(1);
3153 }
3154 }
3155 else {
3156 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3157 exit_program(1);
3158 }
3159 }
3160 }
3161 }
3162
3163 static void dump_attachment(AVStream *st, const char *filename)
3164 {
3165 int ret;
3166 AVIOContext *out = NULL;
3167 AVDictionaryEntry *e;
3168
3169 if (!st->codec->extradata_size) {
3170 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3171 nb_input_files - 1, st->index);
3172 return;
3173 }
3174 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3175 filename = e->value;
3176 if (!*filename) {
3177 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3178 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3179 exit_program(1);
3180 }
3181
3182 assert_file_overwrite(filename);
3183
3184 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3185 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3186 filename);
3187 exit_program(1);
3188 }
3189
3190 avio_write(out, st->codec->extradata, st->codec->extradata_size);
3191 avio_flush(out);
3192 avio_close(out);
3193 }
3194
3195 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3196 {
3197 AVFormatContext *ic;
3198 AVInputFormat *file_iformat = NULL;
3199 int err, i, ret;
3200 int64_t timestamp;
3201 uint8_t buf[128];
3202 AVDictionary **opts;
3203 int orig_nb_streams; // number of streams before avformat_find_stream_info
3204
3205 if (o