vqa: set time base to frame rate as coded in the header.
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/vsrc_buffer.h"
55 #endif
56
57 #if HAVE_SYS_RESOURCE_H
58 #include <sys/types.h>
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #elif HAVE_GETPROCESSTIMES
62 #include <windows.h>
63 #endif
64 #if HAVE_GETPROCESSMEMORYINFO
65 #include <windows.h>
66 #include <psapi.h>
67 #endif
68
69 #if HAVE_SYS_SELECT_H
70 #include <sys/select.h>
71 #endif
72
73 #include <time.h>
74
75 #include "cmdutils.h"
76
77 #include "libavutil/avassert.h"
78
79 #define VSYNC_AUTO -1
80 #define VSYNC_PASSTHROUGH 0
81 #define VSYNC_CFR 1
82 #define VSYNC_VFR 2
83
84 const char program_name[] = "avconv";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct StreamMap {
89 int disabled; /** 1 is this mapping is disabled by a negative map */
90 int file_index;
91 int stream_index;
92 int sync_file_index;
93 int sync_stream_index;
94 } StreamMap;
95
96 /**
97 * select an input file for an output file
98 */
99 typedef struct MetadataMap {
100 int file; ///< file index
101 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
102 int index; ///< stream/chapter/program number
103 } MetadataMap;
104
105 static const OptionDef options[];
106
107 static int video_discard = 0;
108 static int same_quant = 0;
109 static int do_deinterlace = 0;
110 static int intra_dc_precision = 8;
111 static int qp_hist = 0;
112
113 static int file_overwrite = 0;
114 static int do_benchmark = 0;
115 static int do_hex_dump = 0;
116 static int do_pkt_dump = 0;
117 static int do_pass = 0;
118 static char *pass_logfilename_prefix = NULL;
119 static int video_sync_method = VSYNC_AUTO;
120 static int audio_sync_method = 0;
121 static float audio_drift_threshold = 0.1;
122 static int copy_ts = 0;
123 static int copy_tb = 1;
124 static int opt_shortest = 0;
125 static char *vstats_filename;
126 static FILE *vstats_file;
127
128 static int audio_volume = 256;
129
130 static int exit_on_error = 0;
131 static int using_stdin = 0;
132 static int64_t video_size = 0;
133 static int64_t audio_size = 0;
134 static int64_t extra_size = 0;
135 static int nb_frames_dup = 0;
136 static int nb_frames_drop = 0;
137 static int input_sync;
138
139 static float dts_delta_threshold = 10;
140
141 static int print_stats = 1;
142
143 static uint8_t *audio_buf;
144 static unsigned int allocated_audio_buf_size;
145
146 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
147
148 typedef struct FrameBuffer {
149 uint8_t *base[4];
150 uint8_t *data[4];
151 int linesize[4];
152
153 int h, w;
154 enum PixelFormat pix_fmt;
155
156 int refcount;
157 struct InputStream *ist;
158 struct FrameBuffer *next;
159 } FrameBuffer;
160
161 typedef struct InputStream {
162 int file_index;
163 AVStream *st;
164 int discard; /* true if stream data should be discarded */
165 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
166 AVCodec *dec;
167 AVFrame *decoded_frame;
168 AVFrame *filtered_frame;
169
170 int64_t start; /* time when read started */
171 int64_t next_pts; /* synthetic pts for cases where pkt.pts
172 is not defined */
173 int64_t pts; /* current pts */
174 PtsCorrectionContext pts_ctx;
175 double ts_scale;
176 int is_start; /* is 1 at the start and after a discontinuity */
177 int showed_multi_packet_warning;
178 AVDictionary *opts;
179
180 /* a pool of free buffers for decoded data */
181 FrameBuffer *buffer_pool;
182 } InputStream;
183
184 typedef struct InputFile {
185 AVFormatContext *ctx;
186 int eof_reached; /* true if eof reached */
187 int ist_index; /* index of first stream in ist_table */
188 int buffer_size; /* current total buffer size */
189 int64_t ts_offset;
190 int nb_streams; /* number of stream that avconv is aware of; may be different
191 from ctx.nb_streams if new streams appear during av_read_frame() */
192 int rate_emu;
193 } InputFile;
194
195 typedef struct OutputStream {
196 int file_index; /* file index */
197 int index; /* stream index in the output file */
198 int source_index; /* InputStream index */
199 AVStream *st; /* stream in the output file */
200 int encoding_needed; /* true if encoding needed for this stream */
201 int frame_number;
202 /* input pts and corresponding output pts
203 for A/V sync */
204 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
205 struct InputStream *sync_ist; /* input stream to sync against */
206 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
207 AVBitStreamFilterContext *bitstream_filters;
208 AVCodec *enc;
209 int64_t max_frames;
210 AVFrame *output_frame;
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 AVSinkContext avsink_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, &avsink,
574 "out", NULL, &avsink_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 } else {
612 if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
613 return ret;
614 }
615
616 if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
617 return ret;
618
619 codec->width = ost->output_video_filter->inputs[0]->w;
620 codec->height = ost->output_video_filter->inputs[0]->h;
621 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
622 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
623 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
624 ost->output_video_filter->inputs[0]->sample_aspect_ratio;
625
626 return 0;
627 }
628 #endif /* CONFIG_AVFILTER */
629
630 static void term_exit(void)
631 {
632 av_log(NULL, AV_LOG_QUIET, "");
633 }
634
635 static volatile int received_sigterm = 0;
636 static volatile int received_nb_signals = 0;
637
638 static void
639 sigterm_handler(int sig)
640 {
641 received_sigterm = sig;
642 received_nb_signals++;
643 term_exit();
644 }
645
646 static void term_init(void)
647 {
648 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
649 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
650 #ifdef SIGXCPU
651 signal(SIGXCPU, sigterm_handler);
652 #endif
653 }
654
655 static int decode_interrupt_cb(void *ctx)
656 {
657 return received_nb_signals > 1;
658 }
659
660 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
661
662 void exit_program(int ret)
663 {
664 int i;
665
666 /* close files */
667 for (i = 0; i < nb_output_files; i++) {
668 AVFormatContext *s = output_files[i].ctx;
669 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
670 avio_close(s->pb);
671 avformat_free_context(s);
672 av_dict_free(&output_files[i].opts);
673 }
674 for (i = 0; i < nb_output_streams; i++) {
675 AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
676 while (bsfc) {
677 AVBitStreamFilterContext *next = bsfc->next;
678 av_bitstream_filter_close(bsfc);
679 bsfc = next;
680 }
681 output_streams[i].bitstream_filters = NULL;
682
683 if (output_streams[i].output_frame) {
684 AVFrame *frame = output_streams[i].output_frame;
685 if (frame->extended_data != frame->data)
686 av_freep(&frame->extended_data);
687 av_freep(&frame);
688 }
689
690 #if CONFIG_AVFILTER
691 av_freep(&output_streams[i].avfilter);
692 #endif
693 }
694 for (i = 0; i < nb_input_files; i++) {
695 avformat_close_input(&input_files[i].ctx);
696 }
697 for (i = 0; i < nb_input_streams; i++) {
698 av_freep(&input_streams[i].decoded_frame);
699 av_freep(&input_streams[i].filtered_frame);
700 av_dict_free(&input_streams[i].opts);
701 free_buffer_pool(&input_streams[i]);
702 }
703
704 if (vstats_file)
705 fclose(vstats_file);
706 av_free(vstats_filename);
707
708 av_freep(&input_streams);
709 av_freep(&input_files);
710 av_freep(&output_streams);
711 av_freep(&output_files);
712
713 uninit_opts();
714 av_free(audio_buf);
715 allocated_audio_buf_size = 0;
716
717 #if CONFIG_AVFILTER
718 avfilter_uninit();
719 #endif
720 avformat_network_deinit();
721
722 if (received_sigterm) {
723 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
724 (int) received_sigterm);
725 exit (255);
726 }
727
728 exit(ret);
729 }
730
731 static void assert_avoptions(AVDictionary *m)
732 {
733 AVDictionaryEntry *t;
734 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
735 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
736 exit_program(1);
737 }
738 }
739
740 static void assert_codec_experimental(AVCodecContext *c, int encoder)
741 {
742 const char *codec_string = encoder ? "encoder" : "decoder";
743 AVCodec *codec;
744 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
745 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
746 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
747 "results.\nAdd '-strict experimental' if you want to use it.\n",
748 codec_string, c->codec->name);
749 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
750 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
751 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
752 codec_string, codec->name);
753 exit_program(1);
754 }
755 }
756
757 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
758 {
759 if (codec && codec->sample_fmts) {
760 const enum AVSampleFormat *p = codec->sample_fmts;
761 for (; *p != -1; p++) {
762 if (*p == st->codec->sample_fmt)
763 break;
764 }
765 if (*p == -1) {
766 av_log(NULL, AV_LOG_WARNING,
767 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
768 av_get_sample_fmt_name(st->codec->sample_fmt),
769 codec->name,
770 av_get_sample_fmt_name(codec->sample_fmts[0]));
771 st->codec->sample_fmt = codec->sample_fmts[0];
772 }
773 }
774 }
775
776 /**
777 * Update the requested input sample format based on the output sample format.
778 * This is currently only used to request float output from decoders which
779 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
780 * Ideally this will be removed in the future when decoders do not do format
781 * conversion and only output in their native format.
782 */
783 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
784 AVCodecContext *enc)
785 {
786 /* if sample formats match or a decoder sample format has already been
787 requested, just return */
788 if (enc->sample_fmt == dec->sample_fmt ||
789 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
790 return;
791
792 /* if decoder supports more than one output format */
793 if (dec_codec && dec_codec->sample_fmts &&
794 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
795 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
796 const enum AVSampleFormat *p;
797 int min_dec = -1, min_inc = -1;
798
799 /* find a matching sample format in the encoder */
800 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
801 if (*p == enc->sample_fmt) {
802 dec->request_sample_fmt = *p;
803 return;
804 } else if (*p > enc->sample_fmt) {
805 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
806 } else
807 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
808 }
809
810 /* if none match, provide the one that matches quality closest */
811 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
812 enc->sample_fmt - min_dec;
813 }
814 }
815
816 static void choose_sample_rate(AVStream *st, AVCodec *codec)
817 {
818 if (codec && codec->supported_samplerates) {
819 const int *p = codec->supported_samplerates;
820 int best = 0;
821 int best_dist = INT_MAX;
822 for (; *p; p++) {
823 int dist = abs(st->codec->sample_rate - *p);
824 if (dist < best_dist) {
825 best_dist = dist;
826 best = *p;
827 }
828 }
829 if (best_dist) {
830 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
831 }
832 st->codec->sample_rate = best;
833 }
834 }
835
836 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
837 {
838 if (codec && codec->pix_fmts) {
839 const enum PixelFormat *p = codec->pix_fmts;
840 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
841 if (st->codec->codec_id == CODEC_ID_MJPEG) {
842 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
843 } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
844 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
845 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
846 }
847 }
848 for (; *p != PIX_FMT_NONE; p++) {
849 if (*p == st->codec->pix_fmt)
850 break;
851 }
852 if (*p == PIX_FMT_NONE) {
853 if (st->codec->pix_fmt != PIX_FMT_NONE)
854 av_log(NULL, AV_LOG_WARNING,
855 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
856 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
857 codec->name,
858 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
859 st->codec->pix_fmt = codec->pix_fmts[0];
860 }
861 }
862 }
863
864 static double
865 get_sync_ipts(const OutputStream *ost)
866 {
867 const InputStream *ist = ost->sync_ist;
868 OutputFile *of = &output_files[ost->file_index];
869 return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
870 }
871
872 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
873 {
874 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
875 AVCodecContext *avctx = ost->st->codec;
876 int ret;
877
878 /*
879 * Audio encoders may split the packets -- #frames in != #packets out.
880 * But there is no reordering, so we can limit the number of output packets
881 * by simply dropping them here.
882 * Counting encoded video frames needs to be done separately because of
883 * reordering, see do_video_out()
884 */
885 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
886 if (ost->frame_number >= ost->max_frames)
887 return;
888 ost->frame_number++;
889 }
890
891 while (bsfc) {
892 AVPacket new_pkt = *pkt;
893 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
894 &new_pkt.data, &new_pkt.size,
895 pkt->data, pkt->size,
896 pkt->flags & AV_PKT_FLAG_KEY);
897 if (a > 0) {
898 av_free_packet(pkt);
899 new_pkt.destruct = av_destruct_packet;
900 } else if (a < 0) {
901 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
902 bsfc->filter->name, pkt->stream_index,
903 avctx->codec ? avctx->codec->name : "copy");
904 print_error("", a);
905 if (exit_on_error)
906 exit_program(1);
907 }
908 *pkt = new_pkt;
909
910 bsfc = bsfc->next;
911 }
912
913 ret = av_interleaved_write_frame(s, pkt);
914 if (ret < 0) {
915 print_error("av_interleaved_write_frame()", ret);
916 exit_program(1);
917 }
918 }
919
920 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
921 {
922 int fill_char = 0x00;
923 if (sample_fmt == AV_SAMPLE_FMT_U8)
924 fill_char = 0x80;
925 memset(buf, fill_char, size);
926 }
927
928 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
929 const uint8_t *buf, int buf_size)
930 {
931 AVCodecContext *enc = ost->st->codec;
932 AVFrame *frame = NULL;
933 AVPacket pkt;
934 int ret, got_packet;
935
936 av_init_packet(&pkt);
937 pkt.data = NULL;
938 pkt.size = 0;
939
940 if (buf) {
941 if (!ost->output_frame) {
942 ost->output_frame = avcodec_alloc_frame();
943 if (!ost->output_frame) {
944 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
945 exit_program(1);
946 }
947 }
948 frame = ost->output_frame;
949 if (frame->extended_data != frame->data)
950 av_freep(&frame->extended_data);
951 avcodec_get_frame_defaults(frame);
952
953 frame->nb_samples = buf_size /
954 (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
955 if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
956 buf, buf_size, 1)) < 0) {
957 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
958 exit_program(1);
959 }
960 }
961
962 got_packet = 0;
963 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
964 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
965 exit_program(1);
966 }
967
968 if (got_packet) {
969 pkt.stream_index = ost->index;
970 if (pkt.pts != AV_NOPTS_VALUE)
971 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
972 if (pkt.duration > 0)
973 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
974
975 write_frame(s, &pkt, ost);
976
977 audio_size += pkt.size;
978 }
979
980 if (frame)
981 ost->sync_opts += frame->nb_samples;
982
983 return pkt.size;
984 }
985
986 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
987 InputStream *ist, AVFrame *decoded_frame)
988 {
989 uint8_t *buftmp;
990 int64_t audio_buf_size;
991
992 int size_out, frame_bytes, resample_changed;
993 AVCodecContext *enc = ost->st->codec;
994 AVCodecContext *dec = ist->st->codec;
995 int osize = av_get_bytes_per_sample(enc->sample_fmt);
996 int isize = av_get_bytes_per_sample(dec->sample_fmt);
997 uint8_t *buf = decoded_frame->data[0];
998 int size = decoded_frame->nb_samples * dec->channels * isize;
999 int64_t allocated_for_size = size;
1000
1001 need_realloc:
1002 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
1003 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
1004 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
1005 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
1006 audio_buf_size *= osize * enc->channels;
1007
1008 if (audio_buf_size > INT_MAX) {
1009 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
1010 exit_program(1);
1011 }
1012
1013 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1014 if (!audio_buf) {
1015 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1016 exit_program(1);
1017 }
1018
1019 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
1020 ost->audio_resample = 1;
1021
1022 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
1023 ost->resample_channels != dec->channels ||
1024 ost->resample_sample_rate != dec->sample_rate;
1025
1026 if ((ost->audio_resample && !ost->resample) || resample_changed) {
1027 if (resample_changed) {
1028 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",
1029 ist->file_index, ist->st->index,
1030 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1031 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1032 ost->resample_sample_fmt = dec->sample_fmt;
1033 ost->resample_channels = dec->channels;
1034 ost->resample_sample_rate = dec->sample_rate;
1035 if (ost->resample)
1036 audio_resample_close(ost->resample);
1037 }
1038 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1039 if (audio_sync_method <= 1 &&
1040 ost->resample_sample_fmt == enc->sample_fmt &&
1041 ost->resample_channels == enc->channels &&
1042 ost->resample_sample_rate == enc->sample_rate) {
1043 ost->resample = NULL;
1044 ost->audio_resample = 0;
1045 } else if (ost->audio_resample) {
1046 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
1047 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
1048 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
1049 enc->sample_rate, dec->sample_rate,
1050 enc->sample_fmt, dec->sample_fmt,
1051 16, 10, 0, 0.8);
1052 if (!ost->resample) {
1053 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1054 dec->channels, dec->sample_rate,
1055 enc->channels, enc->sample_rate);
1056 exit_program(1);
1057 }
1058 }
1059 }
1060
1061 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
1062 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
1063 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
1064 if (ost->reformat_ctx)
1065 av_audio_convert_free(ost->reformat_ctx);
1066 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
1067 dec->sample_fmt, 1, NULL, 0);
1068 if (!ost->reformat_ctx) {
1069 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
1070 av_get_sample_fmt_name(dec->sample_fmt),
1071 av_get_sample_fmt_name(enc->sample_fmt));
1072 exit_program(1);
1073 }
1074 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
1075 }
1076
1077 if (audio_sync_method) {
1078 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1079 av_fifo_size(ost->fifo) / (enc->channels * osize);
1080 int idelta = delta * dec->sample_rate / enc->sample_rate;
1081 int byte_delta = idelta * isize * dec->channels;
1082
1083 // FIXME resample delay
1084 if (fabs(delta) > 50) {
1085 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1086 if (byte_delta < 0) {
1087 byte_delta = FFMAX(byte_delta, -size);
1088 size += byte_delta;
1089 buf -= byte_delta;
1090 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1091 -byte_delta / (isize * dec->channels));
1092 if (!size)
1093 return;
1094 ist->is_start = 0;
1095 } else {
1096 static uint8_t *input_tmp = NULL;
1097 input_tmp = av_realloc(input_tmp, byte_delta + size);
1098
1099 if (byte_delta > allocated_for_size - size) {
1100 allocated_for_size = byte_delta + (int64_t)size;
1101 goto need_realloc;
1102 }
1103 ist->is_start = 0;
1104
1105 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1106 memcpy(input_tmp + byte_delta, buf, size);
1107 buf = input_tmp;
1108 size += byte_delta;
1109 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1110 }
1111 } else if (audio_sync_method > 1) {
1112 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1113 av_assert0(ost->audio_resample);
1114 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1115 delta, comp, enc->sample_rate);
1116 // 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));
1117 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1118 }
1119 }
1120 } else
1121 ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1122 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1123
1124 if (ost->audio_resample) {
1125 buftmp = audio_buf;
1126 size_out = audio_resample(ost->resample,
1127 (short *)buftmp, (short *)buf,
1128 size / (dec->channels * isize));
1129 size_out = size_out * enc->channels * osize;
1130 } else {
1131 buftmp = buf;
1132 size_out = size;
1133 }
1134
1135 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1136 const void *ibuf[6] = { buftmp };
1137 void *obuf[6] = { audio_buf };
1138 int istride[6] = { isize };
1139 int ostride[6] = { osize };
1140 int len = size_out / istride[0];
1141 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1142 printf("av_audio_convert() failed\n");
1143 if (exit_on_error)
1144 exit_program(1);
1145 return;
1146 }
1147 buftmp = audio_buf;
1148 size_out = len * osize;
1149 }
1150
1151 /* now encode as many frames as possible */
1152 if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1153 /* output resampled raw samples */
1154 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1155 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1156 exit_program(1);
1157 }
1158 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1159
1160 frame_bytes = enc->frame_size * osize * enc->channels;
1161
1162 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1163 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1164 encode_audio_frame(s, ost, audio_buf, frame_bytes);
1165 }
1166 } else {
1167 encode_audio_frame(s, ost, buftmp, size_out);
1168 }
1169 }
1170
1171 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1172 {
1173 AVCodecContext *dec;
1174 AVPicture *picture2;
1175 AVPicture picture_tmp;
1176 uint8_t *buf = 0;
1177
1178 dec = ist->st->codec;
1179
1180 /* deinterlace : must be done before any resize */
1181 if (do_deinterlace) {
1182 int size;
1183
1184 /* create temporary picture */
1185 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1186 buf = av_malloc(size);
1187 if (!buf)
1188 return;
1189
1190 picture2 = &picture_tmp;
1191 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1192
1193 if (avpicture_deinterlace(picture2, picture,
1194 dec->pix_fmt, dec->width, dec->height) < 0) {
1195 /* if error, do not deinterlace */
1196 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1197 av_free(buf);
1198 buf = NULL;
1199 picture2 = picture;
1200 }
1201 } else {
1202 picture2 = picture;
1203 }
1204
1205 if (picture != picture2)
1206 *picture = *picture2;
1207 *bufp = buf;
1208 }
1209
1210 static void do_subtitle_out(AVFormatContext *s,
1211 OutputStream *ost,
1212 InputStream *ist,
1213 AVSubtitle *sub,
1214 int64_t pts)
1215 {
1216 static uint8_t *subtitle_out = NULL;
1217 int subtitle_out_max_size = 1024 * 1024;
1218 int subtitle_out_size, nb, i;
1219 AVCodecContext *enc;
1220 AVPacket pkt;
1221
1222 if (pts == AV_NOPTS_VALUE) {
1223 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1224 if (exit_on_error)
1225 exit_program(1);
1226 return;
1227 }
1228
1229 enc = ost->st->codec;
1230
1231 if (!subtitle_out) {
1232 subtitle_out = av_malloc(subtitle_out_max_size);
1233 }
1234
1235 /* Note: DVB subtitle need one packet to draw them and one other
1236 packet to clear them */
1237 /* XXX: signal it in the codec context ? */
1238 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1239 nb = 2;
1240 else
1241 nb = 1;
1242
1243 for (i = 0; i < nb; i++) {
1244 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1245 // start_display_time is required to be 0
1246 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1247 sub->end_display_time -= sub->start_display_time;
1248 sub->start_display_time = 0;
1249 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1250 subtitle_out_max_size, sub);
1251 if (subtitle_out_size < 0) {
1252 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1253 exit_program(1);
1254 }
1255
1256 av_init_packet(&pkt);
1257 pkt.stream_index = ost->index;
1258 pkt.data = subtitle_out;
1259 pkt.size = subtitle_out_size;
1260 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1261 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1262 /* XXX: the pts correction is handled here. Maybe handling
1263 it in the codec would be better */
1264 if (i == 0)
1265 pkt.pts += 90 * sub->start_display_time;
1266 else
1267 pkt.pts += 90 * sub->end_display_time;
1268 }
1269 write_frame(s, &pkt, ost);
1270 }
1271 }
1272
1273 static int bit_buffer_size = 1024 * 256;
1274 static uint8_t *bit_buffer = NULL;
1275
1276 #if !CONFIG_AVFILTER
1277 static void do_video_resample(OutputStream *ost,
1278 InputStream *ist,
1279 AVFrame *in_picture,
1280 AVFrame **out_picture)
1281 {
1282 int resample_changed = 0;
1283 *out_picture = in_picture;
1284
1285 resample_changed = ost->resample_width != in_picture->width ||
1286 ost->resample_height != in_picture->height ||
1287 ost->resample_pix_fmt != in_picture->format;
1288
1289 if (resample_changed) {
1290 av_log(NULL, AV_LOG_INFO,
1291 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1292 ist->file_index, ist->st->index,
1293 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1294 in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
1295 if (!ost->video_resample)
1296 ost->video_resample = 1;
1297 }
1298
1299 if (ost->video_resample) {
1300 *out_picture = &ost->pict_tmp;
1301 if (resample_changed) {
1302 /* initialize a new scaler context */
1303 sws_freeContext(ost->img_resample_ctx);
1304 ost->img_resample_ctx = sws_getContext(
1305 ist->st->codec->width,
1306 ist->st->codec->height,
1307 ist->st->codec->pix_fmt,
1308 ost->st->codec->width,
1309 ost->st->codec->height,
1310 ost->st->codec->pix_fmt,
1311 ost->sws_flags, NULL, NULL, NULL);
1312 if (ost->img_resample_ctx == NULL) {
1313 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1314 exit_program(1);
1315 }
1316 }
1317 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1318 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1319 }
1320 if (resample_changed) {
1321 ost->resample_width = in_picture->width;
1322 ost->resample_height = in_picture->height;
1323 ost->resample_pix_fmt = in_picture->format;
1324 }
1325 }
1326 #endif
1327
1328
1329 static void do_video_out(AVFormatContext *s,
1330 OutputStream *ost,
1331 InputStream *ist,
1332 AVFrame *in_picture,
1333 int *frame_size, float quality)
1334 {
1335 int nb_frames, i, ret, format_video_sync;
1336 AVFrame *final_picture;
1337 AVCodecContext *enc;
1338 double sync_ipts;
1339
1340 enc = ost->st->codec;
1341
1342 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1343
1344 /* by default, we output a single frame */
1345 nb_frames = 1;
1346
1347 *frame_size = 0;
1348
1349 format_video_sync = video_sync_method;
1350 if (format_video_sync == VSYNC_AUTO)
1351 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
1352 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
1353
1354 if (format_video_sync != VSYNC_PASSTHROUGH) {
1355 double vdelta = sync_ipts - ost->sync_opts;
1356 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1357 if (vdelta < -1.1)
1358 nb_frames = 0;
1359 else if (format_video_sync == VSYNC_VFR) {
1360 if (vdelta <= -0.6) {
1361 nb_frames = 0;
1362 } else if (vdelta > 0.6)
1363 ost->sync_opts = lrintf(sync_ipts);
1364 } else if (vdelta > 1.1)
1365 nb_frames = lrintf(vdelta);
1366 //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);
1367 if (nb_frames == 0) {
1368 ++nb_frames_drop;
1369 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1370 } else if (nb_frames > 1) {
1371 nb_frames_dup += nb_frames - 1;
1372 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1373 }
1374 } else
1375 ost->sync_opts = lrintf(sync_ipts);
1376
1377 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1378 if (nb_frames <= 0)
1379 return;
1380
1381 #if !CONFIG_AVFILTER
1382 do_video_resample(ost, ist, in_picture, &final_picture);
1383 #else
1384 final_picture = in_picture;
1385 #endif
1386
1387 /* duplicates frame if needed */
1388 for (i = 0; i < nb_frames; i++) {
1389 AVPacket pkt;
1390 av_init_packet(&pkt);
1391 pkt.stream_index = ost->index;
1392
1393 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1394 enc->codec->id == CODEC_ID_RAWVIDEO) {
1395 /* raw pictures are written as AVPicture structure to
1396 avoid any copies. We support temporarily the older
1397 method. */
1398 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1399 enc->coded_frame->top_field_first = in_picture->top_field_first;
1400 pkt.data = (uint8_t *)final_picture;
1401 pkt.size = sizeof(AVPicture);
1402 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1403 pkt.flags |= AV_PKT_FLAG_KEY;
1404
1405 write_frame(s, &pkt, ost);
1406 } else {
1407 AVFrame big_picture;
1408
1409 big_picture = *final_picture;
1410 /* better than nothing: use input picture interlaced
1411 settings */
1412 big_picture.interlaced_frame = in_picture->interlaced_frame;
1413 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1414 if (ost->top_field_first == -1)
1415 big_picture.top_field_first = in_picture->top_field_first;
1416 else
1417 big_picture.top_field_first = !!ost->top_field_first;
1418 }
1419
1420 /* handles same_quant here. This is not correct because it may
1421 not be a global option */
1422 big_picture.quality = quality;
1423 if (!enc->me_threshold)
1424 big_picture.pict_type = 0;
1425 // big_picture.pts = AV_NOPTS_VALUE;
1426 big_picture.pts = ost->sync_opts;
1427 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1428 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1429 if (ost->forced_kf_index < ost->forced_kf_count &&
1430 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1431 big_picture.pict_type = AV_PICTURE_TYPE_I;
1432 ost->forced_kf_index++;
1433 }
1434 ret = avcodec_encode_video(enc,
1435 bit_buffer, bit_buffer_size,
1436 &big_picture);
1437 if (ret < 0) {
1438 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1439 exit_program(1);
1440 }
1441
1442 if (ret > 0) {
1443 pkt.data = bit_buffer;
1444 pkt.size = ret;
1445 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1446 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1447 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1448 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1449 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1450
1451 if (enc->coded_frame->key_frame)
1452 pkt.flags |= AV_PKT_FLAG_KEY;
1453 write_frame(s, &pkt, ost);
1454 *frame_size = ret;
1455 video_size += ret;
1456 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1457 // enc->frame_number-1, ret, enc->pict_type);
1458 /* if two pass, output log */
1459 if (ost->logfile && enc->stats_out) {
1460 fprintf(ost->logfile, "%s", enc->stats_out);
1461 }
1462 }
1463 }
1464 ost->sync_opts++;
1465 /*
1466 * For video, number of frames in == number of packets out.
1467 * But there may be reordering, so we can't throw away frames on encoder
1468 * flush, we need to limit them here, before they go into encoder.
1469 */
1470 ost->frame_number++;
1471 }
1472 }
1473
1474 static double psnr(double d)
1475 {
1476 return -10.0 * log(d) / log(10.0);
1477 }
1478
1479 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1480 int frame_size)
1481 {
1482 AVCodecContext *enc;
1483 int frame_number;
1484 double ti1, bitrate, avg_bitrate;
1485
1486 /* this is executed just the first time do_video_stats is called */
1487 if (!vstats_file) {
1488 vstats_file = fopen(vstats_filename, "w");
1489 if (!vstats_file) {
1490 perror("fopen");
1491 exit_program(1);
1492 }
1493 }
1494
1495 enc = ost->st->codec;
1496 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1497 frame_number = ost->frame_number;
1498 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1499 if (enc->flags&CODEC_FLAG_PSNR)
1500 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1501
1502 fprintf(vstats_file,"f_size= %6d ", frame_size);
1503 /* compute pts value */
1504 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1505 if (ti1 < 0.01)
1506 ti1 = 0.01;
1507
1508 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1509 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1510 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1511 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1512 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1513 }
1514 }
1515
1516 static void print_report(OutputFile *output_files,
1517 OutputStream *ost_table, int nb_ostreams,
1518 int is_last_report, int64_t timer_start)
1519 {
1520 char buf[1024];
1521 OutputStream *ost;
1522 AVFormatContext *oc;
1523 int64_t total_size;
1524 AVCodecContext *enc;
1525 int frame_number, vid, i;
1526 double bitrate, ti1, pts;
1527 static int64_t last_time = -1;
1528 static int qp_histogram[52];
1529
1530 if (!print_stats && !is_last_report)
1531 return;
1532
1533 if (!is_last_report) {
1534 int64_t cur_time;
1535 /* display the report every 0.5 seconds */
1536 cur_time = av_gettime();
1537 if (last_time == -1) {
1538 last_time = cur_time;
1539 return;
1540 }
1541 if ((cur_time - last_time) < 500000)
1542 return;
1543 last_time = cur_time;
1544 }
1545
1546
1547 oc = output_files[0].ctx;
1548
1549 total_size = avio_size(oc->pb);
1550 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1551 total_size = avio_tell(oc->pb);
1552
1553 buf[0] = '\0';
1554 ti1 = 1e10;
1555 vid = 0;
1556 for (i = 0; i < nb_ostreams; i++) {
1557 float q = -1;
1558 ost = &ost_table[i];
1559 enc = ost->st->codec;
1560 if (!ost->stream_copy && enc->coded_frame)
1561 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1562 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1563 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1564 }
1565 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1566 float t = (av_gettime() - timer_start) / 1000000.0;
1567
1568 frame_number = ost->frame_number;
1569 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1570 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1571 if (is_last_report)
1572 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1573 if (qp_hist) {
1574 int j;
1575 int qp = lrintf(q);
1576 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1577 qp_histogram[qp]++;
1578 for (j = 0; j < 32; j++)
1579 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1580 }
1581 if (enc->flags&CODEC_FLAG_PSNR) {
1582 int j;
1583 double error, error_sum = 0;
1584 double scale, scale_sum = 0;
1585 char type[3] = { 'Y','U','V' };
1586 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1587 for (j = 0; j < 3; j++) {
1588 if (is_last_report) {
1589 error = enc->error[j];
1590 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1591 } else {
1592 error = enc->coded_frame->error[j];
1593 scale = enc->width * enc->height * 255.0 * 255.0;
1594 }
1595 if (j)
1596 scale /= 4;
1597 error_sum += error;
1598 scale_sum += scale;
1599 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1600 }
1601 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1602 }
1603 vid = 1;
1604 }
1605 /* compute min output value */
1606 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1607 if ((pts < ti1) && (pts > 0))
1608 ti1 = pts;
1609 }
1610 if (ti1 < 0.01)
1611 ti1 = 0.01;
1612
1613 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1614
1615 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1616 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1617 (double)total_size / 1024, ti1, bitrate);
1618
1619 if (nb_frames_dup || nb_frames_drop)
1620 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1621 nb_frames_dup, nb_frames_drop);
1622
1623 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1624
1625 fflush(stderr);
1626
1627 if (is_last_report) {
1628 int64_t raw= audio_size + video_size + extra_size;
1629 av_log(NULL, AV_LOG_INFO, "\n");
1630 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1631 video_size / 1024.0,
1632 audio_size / 1024.0,
1633 extra_size / 1024.0,
1634 100.0 * (total_size - raw) / raw
1635 );
1636 }
1637 }
1638
1639 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1640 {
1641 int i, ret;
1642
1643 for (i = 0; i < nb_ostreams; i++) {
1644 OutputStream *ost = &ost_table[i];
1645 AVCodecContext *enc = ost->st->codec;
1646 AVFormatContext *os = output_files[ost->file_index].ctx;
1647 int stop_encoding = 0;
1648
1649 if (!ost->encoding_needed)
1650 continue;
1651
1652 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1653 continue;
1654 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1655 continue;
1656
1657 for (;;) {
1658 AVPacket pkt;
1659 int fifo_bytes;
1660 av_init_packet(&pkt);
1661 pkt.data = NULL;
1662 pkt.size = 0;
1663
1664 switch (ost->st->codec->codec_type) {
1665 case AVMEDIA_TYPE_AUDIO:
1666 fifo_bytes = av_fifo_size(ost->fifo);
1667 if (fifo_bytes > 0) {
1668 /* encode any samples remaining in fifo */
1669 int frame_bytes = fifo_bytes;
1670
1671 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1672
1673 /* pad last frame with silence if needed */
1674 if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
1675 frame_bytes = enc->frame_size * enc->channels *
1676 av_get_bytes_per_sample(enc->sample_fmt);
1677 if (allocated_audio_buf_size < frame_bytes)
1678 exit_program(1);
1679 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1680 }
1681 encode_audio_frame(os, ost, audio_buf, frame_bytes);
1682 } else {
1683 /* flush encoder with NULL frames until it is done
1684 returning packets */
1685 if (encode_audio_frame(os, ost, NULL, 0) == 0) {
1686 stop_encoding = 1;
1687 break;
1688 }
1689 }
1690 break;
1691 case AVMEDIA_TYPE_VIDEO:
1692 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1693 if (ret < 0) {
1694 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1695 exit_program(1);
1696 }
1697 video_size += ret;
1698 if (enc->coded_frame && enc->coded_frame->key_frame)
1699 pkt.flags |= AV_PKT_FLAG_KEY;
1700 if (ost->logfile && enc->stats_out) {
1701 fprintf(ost->logfile, "%s", enc->stats_out);
1702 }
1703 if (ret <= 0) {
1704 stop_encoding = 1;
1705 break;
1706 }
1707 pkt.stream_index = ost->index;
1708 pkt.data = bit_buffer;
1709 pkt.size = ret;
1710 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1711 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1712 write_frame(os, &pkt, ost);
1713 break;
1714 default:
1715 stop_encoding = 1;
1716 }
1717 if (stop_encoding)
1718 break;
1719 }
1720 }
1721 }
1722
1723 /*
1724 * Check whether a packet from ist should be written into ost at this time
1725 */
1726 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1727 {
1728 OutputFile *of = &output_files[ost->file_index];
1729 int ist_index = ist - input_streams;
1730
1731 if (ost->source_index != ist_index)
1732 return 0;
1733
1734 if (of->start_time && ist->pts < of->start_time)
1735 return 0;
1736
1737 if (of->recording_time != INT64_MAX &&
1738 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1739 (AVRational){ 1, 1000000 }) >= 0) {
1740 ost->is_past_recording_time = 1;
1741 return 0;
1742 }
1743
1744 return 1;
1745 }
1746
1747 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1748 {
1749 OutputFile *of = &output_files[ost->file_index];
1750 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1751 AVPacket opkt;
1752
1753 av_init_packet(&opkt);
1754
1755 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1756 !ost->copy_initial_nonkeyframes)
1757 return;
1758
1759 /* force the input stream PTS */
1760 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1761 audio_size += pkt->size;
1762 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1763 video_size += pkt->size;
1764 ost->sync_opts++;
1765 }
1766
1767 opkt.stream_index = ost->index;
1768 if (pkt->pts != AV_NOPTS_VALUE)
1769 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1770 else
1771 opkt.pts = AV_NOPTS_VALUE;
1772
1773 if (pkt->dts == AV_NOPTS_VALUE)
1774 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1775 else
1776 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1777 opkt.dts -= ost_tb_start_time;
1778
1779 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1780 opkt.flags = pkt->flags;
1781
1782 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1783 if ( ost->st->codec->codec_id != CODEC_ID_H264
1784 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1785 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1786 ) {
1787 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1788 opkt.destruct = av_destruct_packet;
1789 } else {
1790 opkt.data = pkt->data;
1791 opkt.size = pkt->size;
1792 }
1793
1794 write_frame(of->ctx, &opkt, ost);
1795 ost->st->codec->frame_number++;
1796 av_free_packet(&opkt);
1797 }
1798
1799 static void rate_emu_sleep(InputStream *ist)
1800 {
1801 if (input_files[ist->file_index].rate_emu) {
1802 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1803 int64_t now = av_gettime() - ist->start;
1804 if (pts > now)
1805 usleep(pts - now);
1806 }
1807 }
1808
1809 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1810 {
1811 AVFrame *decoded_frame;
1812 AVCodecContext *avctx = ist->st->codec;
1813 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1814 int i, ret;
1815
1816 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1817 return AVERROR(ENOMEM);
1818 else
1819 avcodec_get_frame_defaults(ist->decoded_frame);
1820 decoded_frame = ist->decoded_frame;
1821
1822 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1823 if (ret < 0) {
1824 return ret;
1825 }
1826
1827 if (!*got_output) {
1828 /* no audio frame */
1829 return ret;
1830 }
1831
1832 /* if the decoder provides a pts, use it instead of the last packet pts.
1833 the decoder could be delaying output by a packet or more. */
1834 if (decoded_frame->pts != AV_NOPTS_VALUE)
1835 ist->next_pts = decoded_frame->pts;
1836
1837 /* increment next_pts to use for the case where the input stream does not
1838 have timestamps or there are multiple frames in the packet */
1839 ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1840 avctx->sample_rate;
1841
1842 // preprocess audio (volume)
1843 if (audio_volume != 256) {
1844 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1845 void *samples = decoded_frame->data[0];
1846 switch (avctx->sample_fmt) {
1847 case AV_SAMPLE_FMT_U8:
1848 {
1849 uint8_t *volp = samples;
1850 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1851 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1852 *volp++ = av_clip_uint8(v);
1853 }
1854 break;
1855 }
1856 case AV_SAMPLE_FMT_S16:
1857 {
1858 int16_t *volp = samples;
1859 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1860 int v = ((*volp) * audio_volume + 128) >> 8;
1861 *volp++ = av_clip_int16(v);
1862 }
1863 break;
1864 }
1865 case AV_SAMPLE_FMT_S32:
1866 {
1867 int32_t *volp = samples;
1868 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1869 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1870 *volp++ = av_clipl_int32(v);
1871 }
1872 break;
1873 }
1874 case AV_SAMPLE_FMT_FLT:
1875 {
1876 float *volp = samples;
1877 float scale = audio_volume / 256.f;
1878 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1879 *volp++ *= scale;
1880 }
1881 break;
1882 }
1883 case AV_SAMPLE_FMT_DBL:
1884 {
1885 double *volp = samples;
1886 double scale = audio_volume / 256.;
1887 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1888 *volp++ *= scale;
1889 }
1890 break;
1891 }
1892 default:
1893 av_log(NULL, AV_LOG_FATAL,
1894 "Audio volume adjustment on sample format %s is not supported.\n",
1895 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1896 exit_program(1);
1897 }
1898 }
1899
1900 rate_emu_sleep(ist);
1901
1902 for (i = 0; i < nb_output_streams; i++) {
1903 OutputStream *ost = &output_streams[i];
1904
1905 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1906 continue;
1907 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1908 }
1909
1910 return ret;
1911 }
1912
1913 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1914 {
1915 AVFrame *decoded_frame, *filtered_frame = NULL;
1916 void *buffer_to_free = NULL;
1917 int i, ret = 0;
1918 float quality;
1919 #if CONFIG_AVFILTER
1920 int frame_available = 1;
1921 #endif
1922
1923 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1924 return AVERROR(ENOMEM);
1925 else
1926 avcodec_get_frame_defaults(ist->decoded_frame);
1927 decoded_frame = ist->decoded_frame;
1928 pkt->pts = *pkt_pts;
1929 pkt->dts = ist->pts;
1930 *pkt_pts = AV_NOPTS_VALUE;
1931
1932 ret = avcodec_decode_video2(ist->st->codec,
1933 decoded_frame, got_output, pkt);
1934 if (ret < 0)
1935 return ret;
1936
1937 quality = same_quant ? decoded_frame->quality : 0;
1938 if (!*got_output) {
1939 /* no picture yet */
1940 return ret;
1941 }
1942 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1943 decoded_frame->pkt_dts);
1944 if (pkt->duration)
1945 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1946 else if (ist->st->codec->time_base.num != 0) {
1947 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1948 ist->st->codec->ticks_per_frame;
1949 ist->next_pts += ((int64_t)AV_TIME_BASE *
1950 ist->st->codec->time_base.num * ticks) /
1951 ist->st->codec->time_base.den;
1952 }
1953 pkt->size = 0;
1954 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1955
1956 rate_emu_sleep(ist);
1957
1958 for (i = 0; i < nb_output_streams; i++) {
1959 OutputStream *ost = &output_streams[i];
1960 int frame_size, resample_changed;
1961
1962 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1963 continue;
1964
1965 #if CONFIG_AVFILTER
1966 resample_changed = ost->resample_width != decoded_frame->width ||
1967 ost->resample_height != decoded_frame->height ||
1968 ost->resample_pix_fmt != decoded_frame->format;
1969 if (resample_changed) {
1970 av_log(NULL, AV_LOG_INFO,
1971 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1972 ist->file_index, ist->st->index,
1973 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1974 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1975
1976 avfilter_graph_free(&ost->graph);
1977 if (configure_video_filters(ist, ost)) {
1978 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1979 exit_program(1);
1980 }
1981
1982 ost->resample_width = decoded_frame->width;
1983 ost->resample_height = decoded_frame->height;
1984 ost->resample_pix_fmt = decoded_frame->format;
1985 }
1986
1987 if (ist->st->sample_aspect_ratio.num)
1988 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1989 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1990 FrameBuffer *buf = decoded_frame->opaque;
1991 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1992 decoded_frame->data, decoded_frame->linesize,
1993 AV_PERM_READ | AV_PERM_PRESERVE,
1994 ist->st->codec->width, ist->st->codec->height,
1995 ist->st->codec->pix_fmt);
1996
1997 avfilter_copy_frame_props(fb, decoded_frame);
1998 fb->pts = ist->pts;
1999 fb->buf->priv = buf;
2000 fb->buf->free = filter_release_buffer;
2001
2002 buf->refcount++;
2003 av_buffersrc_buffer(ost->input_video_filter, fb);
2004 } else
2005 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
2006 ist->pts, decoded_frame->sample_aspect_ratio);
2007
2008 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2009 av_free(buffer_to_free);
2010 return AVERROR(ENOMEM);
2011 } else
2012 avcodec_get_frame_defaults(ist->filtered_frame);
2013 filtered_frame = ist->filtered_frame;
2014
2015 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2016 while (frame_available) {
2017 AVRational ist_pts_tb;
2018 if (ost->output_video_filter)
2019 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
2020 if (ost->picref)
2021 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2022 if (ost->picref->video && !ost->frame_aspect_ratio)
2023 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
2024 #else
2025 filtered_frame = decoded_frame;
2026 #endif
2027
2028 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2029 same_quant ? quality : ost->st->codec->global_quality);
2030 if (vstats_filename && frame_size)
2031 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2032 #if CONFIG_AVFILTER
2033 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2034 if (ost->picref)
2035 avfilter_unref_buffer(ost->picref);
2036 }
2037 #endif
2038 }
2039
2040 av_free(buffer_to_free);
2041 return ret;
2042 }
2043
2044 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2045 {
2046 AVSubtitle subtitle;
2047 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2048 &subtitle, got_output, pkt);
2049 if (ret < 0)
2050 return ret;
2051 if (!*got_output)
2052 return ret;
2053
2054 rate_emu_sleep(ist);
2055
2056 for (i = 0; i < nb_output_streams; i++) {
2057 OutputStream *ost = &output_streams[i];
2058
2059 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2060 continue;
2061
2062 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2063 }
2064
2065 avsubtitle_free(&subtitle);
2066 return ret;
2067 }
2068
2069 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2070 static int output_packet(InputStream *ist,
2071 OutputStream *ost_table, int nb_ostreams,
2072 const AVPacket *pkt)
2073 {
2074 int i;
2075 int got_output;
2076 int64_t pkt_pts = AV_NOPTS_VALUE;
2077 AVPacket avpkt;
2078
2079 if (ist->next_pts == AV_NOPTS_VALUE)
2080 ist->next_pts = ist->pts;
2081
2082 if (pkt == NULL) {
2083 /* EOF handling */
2084 av_init_packet(&avpkt);
2085 avpkt.data = NULL;
2086 avpkt.size = 0;
2087 goto handle_eof;
2088 } else {
2089 avpkt = *pkt;
2090 }
2091
2092 if (pkt->dts != AV_NOPTS_VALUE)
2093 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2094 if (pkt->pts != AV_NOPTS_VALUE)
2095 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2096
2097 // while we have more to decode or while the decoder did output something on EOF
2098 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2099 int ret = 0;
2100 handle_eof:
2101
2102 ist->pts = ist->next_pts;
2103
2104 if (avpkt.size && avpkt.size != pkt->size) {
2105 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2106 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2107 ist->showed_multi_packet_warning = 1;
2108 }
2109
2110 switch (ist->st->codec->codec_type) {
2111 case AVMEDIA_TYPE_AUDIO:
2112 ret = transcode_audio (ist, &avpkt, &got_output);
2113 break;
2114 case AVMEDIA_TYPE_VIDEO:
2115 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2116 break;
2117 case AVMEDIA_TYPE_SUBTITLE:
2118 ret = transcode_subtitles(ist, &avpkt, &got_output);
2119 break;
2120 default:
2121 return -1;
2122 }
2123
2124 if (ret < 0)
2125 return ret;
2126 // touch data and size only if not EOF
2127 if (pkt) {
2128 avpkt.data += ret;
2129 avpkt.size -= ret;
2130 }
2131 if (!got_output) {
2132 continue;
2133 }
2134 }
2135
2136 /* handle stream copy */
2137 if (!ist->decoding_needed) {
2138 rate_emu_sleep(ist);
2139 ist->pts = ist->next_pts;
2140 switch (ist->st->codec->codec_type) {
2141 case AVMEDIA_TYPE_AUDIO:
2142 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2143 ist->st->codec->sample_rate;
2144 break;
2145 case AVMEDIA_TYPE_VIDEO:
2146 if (ist->st->codec->time_base.num != 0) {
2147 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2148 ist->next_pts += ((int64_t)AV_TIME_BASE *
2149 ist->st->codec->time_base.num * ticks) /
2150 ist->st->codec->time_base.den;
2151 }
2152 break;
2153 }
2154 }
2155 for (i = 0; pkt && i < nb_ostreams; i++) {
2156 OutputStream *ost = &ost_table[i];
2157
2158 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2159 continue;
2160
2161 do_streamcopy(ist, ost, pkt);
2162 }
2163
2164 return 0;
2165 }
2166
2167 static void print_sdp(OutputFile *output_files, int n)
2168 {
2169 char sdp[2048];
2170 int i;
2171 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2172
2173 if (!avc)
2174 exit_program(1);
2175 for (i = 0; i < n; i++)
2176 avc[i] = output_files[i].ctx;
2177
2178 av_sdp_create(avc, n, sdp, sizeof(sdp));
2179 printf("SDP:\n%s\n", sdp);
2180 fflush(stdout);
2181 av_freep(&avc);
2182 }
2183
2184 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2185 char *error, int error_len)
2186 {
2187 int i;
2188 InputStream *ist = &input_streams[ist_index];
2189 if (ist->decoding_needed) {
2190 AVCodec *codec = ist->dec;
2191 if (!codec) {
2192 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2193 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2194 return AVERROR(EINVAL);
2195 }
2196
2197 /* update requested sample format for the decoder based on the
2198 corresponding encoder sample format */
2199 for (i = 0; i < nb_output_streams; i++) {
2200 OutputStream *ost = &output_streams[i];
2201 if (ost->source_index == ist_index) {
2202 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2203 break;
2204 }
2205 }
2206
2207 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2208 ist->st->codec->get_buffer = codec_get_buffer;
2209 ist->st->codec->release_buffer = codec_release_buffer;
2210 ist->st->codec->opaque = ist;
2211 }
2212
2213 if (!av_dict_get(ist->opts, "threads", NULL, 0))
2214 av_dict_set(&ist->opts, "threads", "auto", 0);
2215 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2216 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2217 ist->file_index, ist->st->index);
2218 return AVERROR(EINVAL);
2219 }
2220 assert_codec_experimental(ist->st->codec, 0);
2221 assert_avoptions(ist->opts);
2222 }
2223
2224 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;
2225 ist->next_pts = AV_NOPTS_VALUE;
2226 init_pts_correction(&ist->pts_ctx);
2227 ist->is_start = 1;
2228
2229 return 0;
2230 }
2231
2232 static int transcode_init(OutputFile *output_files,
2233 int nb_output_files,
2234 InputFile *input_files,
2235 int nb_input_files)
2236 {
2237 int ret = 0, i, j, k;
2238 AVFormatContext *oc;
2239 AVCodecContext *codec, *icodec;
2240 OutputStream *ost;
2241 InputStream *ist;
2242 char error[1024];
2243 int want_sdp = 1;
2244
2245 /* init framerate emulation */
2246 for (i = 0; i < nb_input_files; i++) {
2247 InputFile *ifile = &input_files[i];
2248 if (ifile->rate_emu)
2249 for (j = 0; j < ifile->nb_streams; j++)
2250 input_streams[j + ifile->ist_index].start = av_gettime();
2251 }
2252
2253 /* output stream init */
2254 for (i = 0; i < nb_output_files; i++) {
2255 oc = output_files[i].ctx;
2256 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2257 av_dump_format(oc, i, oc->filename, 1);
2258 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2259 return AVERROR(EINVAL);
2260 }
2261 }
2262
2263 /* for each output stream, we compute the right encoding parameters */
2264 for (i = 0; i < nb_output_streams; i++) {
2265 ost = &output_streams[i];
2266 oc = output_files[ost->file_index].ctx;
2267 ist = &input_streams[ost->source_index];
2268
2269 if (ost->attachment_filename)
2270 continue;
2271
2272 codec = ost->st->codec;
2273 icodec = ist->st->codec;
2274
2275 ost->st->disposition = ist->st->disposition;
2276 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2277 codec->chroma_sample_location = icodec->chroma_sample_location;
2278
2279 if (ost->stream_copy) {
2280 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2281
2282 if (extra_size > INT_MAX) {
2283 return AVERROR(EINVAL);
2284 }
2285
2286 /* if stream_copy is selected, no need to decode or encode */
2287 codec->codec_id = icodec->codec_id;
2288 codec->codec_type = icodec->codec_type;
2289
2290 if (!codec->codec_tag) {
2291 if (!oc->oformat->codec_tag ||
2292 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2293 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2294 codec->codec_tag = icodec->codec_tag;
2295 }
2296
2297 codec->bit_rate = icodec->bit_rate;
2298 codec->rc_max_rate = icodec->rc_max_rate;
2299 codec->rc_buffer_size = icodec->rc_buffer_size;
2300 codec->field_order = icodec->field_order;
2301 codec->extradata = av_mallocz(extra_size);
2302 if (!codec->extradata) {
2303 return AVERROR(ENOMEM);
2304 }
2305 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2306 codec->extradata_size = icodec->extradata_size;
2307 if (!copy_tb) {
2308 codec->time_base = icodec->time_base;
2309 codec->time_base.num *= icodec->ticks_per_frame;
2310 av_reduce(&codec->time_base.num, &codec->time_base.den,
2311 codec->time_base.num, codec->time_base.den, INT_MAX);
2312 } else
2313 codec->time_base = ist->st->time_base;
2314
2315 switch (codec->codec_type) {
2316 case AVMEDIA_TYPE_AUDIO:
2317 if (audio_volume != 256) {
2318 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2319 exit_program(1);
2320 }
2321 codec->channel_layout = icodec->channel_layout;
2322 codec->sample_rate = icodec->sample_rate;
2323 codec->channels = icodec->channels;
2324 codec->frame_size = icodec->frame_size;
2325 codec->audio_service_type = icodec->audio_service_type;
2326 codec->block_align = icodec->block_align;
2327 break;
2328 case AVMEDIA_TYPE_VIDEO:
2329 codec->pix_fmt = icodec->pix_fmt;
2330 codec->width = icodec->width;
2331 codec->height = icodec->height;
2332 codec->has_b_frames = icodec->has_b_frames;
2333 if (!codec->sample_aspect_ratio.num) {
2334 codec->sample_aspect_ratio =
2335 ost->st->sample_aspect_ratio =
2336 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2337 ist->st->codec->sample_aspect_ratio.num ?
2338 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2339 }
2340 break;
2341 case AVMEDIA_TYPE_SUBTITLE:
2342 codec->width = icodec->width;
2343 codec->height = icodec->height;
2344 break;
2345 case AVMEDIA_TYPE_DATA:
2346 case AVMEDIA_TYPE_ATTACHMENT:
2347 break;
2348 default:
2349 abort();
2350 }
2351 } else {
2352 if (!ost->enc)
2353 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2354
2355 ist->decoding_needed = 1;
2356 ost->encoding_needed = 1;
2357
2358 switch (codec->codec_type) {
2359 case AVMEDIA_TYPE_AUDIO:
2360 ost->fifo = av_fifo_alloc(1024);
2361 if (!ost->fifo) {
2362 return AVERROR(ENOMEM);
2363 }
2364 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2365
2366 if (!codec->sample_rate)
2367 codec->sample_rate = icodec->sample_rate;
2368 choose_sample_rate(ost->st, ost->enc);
2369 codec->time_base = (AVRational){ 1, codec->sample_rate };
2370
2371 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2372 codec->sample_fmt = icodec->sample_fmt;
2373 choose_sample_fmt(ost->st, ost->enc);
2374
2375 if (!codec->channels)
2376 codec->channels = icodec->channels;
2377 codec->channel_layout = icodec->channel_layout;
2378 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2379 codec->channel_layout = 0;
2380
2381 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2382 icodec->request_channels = codec-> channels;
2383 ost->resample_sample_fmt = icodec->sample_fmt;
2384 ost->resample_sample_rate = icodec->sample_rate;
2385 ost->resample_channels = icodec->channels;
2386 break;
2387 case AVMEDIA_TYPE_VIDEO:
2388 if (codec->pix_fmt == PIX_FMT_NONE)
2389 codec->pix_fmt = icodec->pix_fmt;
2390 choose_pixel_fmt(ost->st, ost->enc);
2391
2392 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2393 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2394 exit_program(1);
2395 }
2396
2397 if (!codec->width || !codec->height) {
2398 codec->width = icodec->width;
2399 codec->height = icodec->height;
2400 }
2401
2402 ost->video_resample = codec->width != icodec->width ||
2403 codec->height != icodec->height ||
2404 codec->pix_fmt != icodec->pix_fmt;
2405 if (ost->video_resample) {
2406 #if !CONFIG_AVFILTER
2407 avcodec_get_frame_defaults(&ost->pict_tmp);
2408 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2409 codec->width, codec->height)) {
2410 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2411 exit_program(1);
2412 }
2413 ost->img_resample_ctx = sws_getContext(
2414 icodec->width,
2415 icodec->height,
2416 icodec->pix_fmt,
2417 codec->width,
2418 codec->height,
2419 codec->pix_fmt,
2420 ost->sws_flags, NULL, NULL, NULL);
2421 if (ost->img_resample_ctx == NULL) {
2422 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2423 exit_program(1);
2424 }
2425 #endif
2426 codec->bits_per_raw_sample = 0;
2427 }
2428
2429 ost->resample_height = icodec->height;
2430 ost->resample_width = icodec->width;
2431 ost->resample_pix_fmt = icodec->pix_fmt;
2432
2433 if (!ost->frame_rate.num)
2434 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2435 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2436 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2437 ost->frame_rate = ost->enc->supported_framerates[idx];
2438 }
2439 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2440
2441 #if CONFIG_AVFILTER
2442 if (configure_video_filters(ist, ost)) {
2443 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2444 exit(1);
2445 }
2446 #endif
2447 break;
2448 case AVMEDIA_TYPE_SUBTITLE:
2449 break;
2450 default:
2451 abort();
2452 break;
2453 }
2454 /* two pass mode */
2455 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2456 char logfilename[1024];
2457 FILE *f;
2458
2459 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2460 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2461 i);
2462 if (codec->flags & CODEC_FLAG_PASS1) {
2463 f = fopen(logfilename, "wb");
2464 if (!f) {
2465 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2466 logfilename, strerror(errno));
2467 exit_program(1);
2468 }
2469 ost->logfile = f;
2470 } else {
2471 char *logbuffer;
2472 size_t logbuffer_size;
2473 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2474 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2475 logfilename);
2476 exit_program(1);
2477 }
2478 codec->stats_in = logbuffer;
2479 }
2480 }
2481 }
2482 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2483 int size = codec->width * codec->height;
2484 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2485 }
2486 }
2487
2488 if (!bit_buffer)
2489 bit_buffer = av_malloc(bit_buffer_size);
2490 if (!bit_buffer) {
2491 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2492 bit_buffer_size);
2493 return AVERROR(ENOMEM);
2494 }
2495
2496 /* open each encoder */
2497 for (i = 0; i < nb_output_streams; i++) {
2498 ost = &output_streams[i];
2499 if (ost->encoding_needed) {
2500 AVCodec *codec = ost->enc;
2501 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2502 if (!codec) {
2503 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2504 ost->st->codec->codec_id, ost->file_index, ost->index);
2505 ret = AVERROR(EINVAL);
2506 goto dump_format;
2507 }
2508 if (dec->subtitle_header) {
2509 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2510 if (!ost->st->codec->subtitle_header) {
2511 ret = AVERROR(ENOMEM);
2512 goto dump_format;
2513 }
2514 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2515 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2516 }
2517 if (!av_dict_get(ost->opts, "threads", NULL, 0))
2518 av_dict_set(&ost->opts, "threads", "auto", 0);
2519 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2520 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2521 ost->file_index, ost->index);
2522 ret = AVERROR(EINVAL);
2523 goto dump_format;
2524 }
2525 assert_codec_experimental(ost->st->codec, 1);
2526 assert_avoptions(ost->opts);
2527 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2528 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2529 "It takes bits/s as argument, not kbits/s\n");
2530 extra_size += ost->st->codec->extradata_size;
2531
2532 if (ost->st->codec->me_threshold)
2533 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2534 }
2535 }
2536
2537 /* init input streams */
2538 for (i = 0; i < nb_input_streams; i++)
2539 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2540 goto dump_format;
2541
2542 /* discard unused programs */
2543 for (i = 0; i < nb_input_files; i++) {
2544 InputFile *ifile = &input_files[i];
2545 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2546 AVProgram *p = ifile->ctx->programs[j];
2547 int discard = AVDISCARD_ALL;
2548
2549 for (k = 0; k < p->nb_stream_indexes; k++)
2550 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2551 discard = AVDISCARD_DEFAULT;
2552 break;
2553 }
2554 p->discard = discard;
2555 }
2556 }
2557
2558 /* open files and write file headers */
2559 for (i = 0; i < nb_output_files; i++) {
2560 oc = output_files[i].ctx;
2561 oc->interrupt_callback = int_cb;
2562 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2563 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2564 ret = AVERROR(EINVAL);
2565 goto dump_format;
2566 }
2567 assert_avoptions(output_files[i].opts);
2568 if (strcmp(oc->oformat->name, "rtp")) {
2569 want_sdp = 0;
2570 }
2571 }
2572
2573 dump_format:
2574 /* dump the file output parameters - cannot be done before in case
2575 of stream copy */
2576 for (i = 0; i < nb_output_files; i++) {
2577 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2578 }
2579
2580 /* dump the stream mapping */
2581 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2582 for (i = 0; i < nb_output_streams; i++) {
2583 ost = &output_streams[i];
2584
2585 if (ost->attachment_filename) {
2586 /* an attached file */
2587 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2588 ost->attachment_filename, ost->file_index, ost->index);
2589 continue;
2590 }
2591 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2592 input_streams[ost->source_index].file_index,
2593 input_streams[ost->source_index].st->index,
2594 ost->file_index,
2595 ost->index);
2596 if (ost->sync_ist != &input_streams[ost->source_index])
2597 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2598 ost->sync_ist->file_index,
2599 ost->sync_ist->st->index);
2600 if (ost->stream_copy)
2601 av_log(NULL, AV_LOG_INFO, " (copy)");
2602 else
2603 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2604 input_streams[ost->source_index].dec->name : "?",
2605 ost->enc ? ost->enc->name : "?");
2606 av_log(NULL, AV_LOG_INFO, "\n");
2607 }
2608
2609 if (ret) {
2610 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2611 return ret;
2612 }
2613
2614 if (want_sdp) {
2615 print_sdp(output_files, nb_output_files);
2616 }
2617
2618 return 0;
2619 }
2620
2621 /*
2622 * The following code is the main loop of the file converter
2623 */
2624 static int transcode(OutputFile *output_files,
2625 int nb_output_files,
2626 InputFile *input_files,
2627 int nb_input_files)
2628 {
2629 int ret, i;
2630 AVFormatContext *is, *os;
2631 OutputStream *ost;
2632 InputStream *ist;
2633 uint8_t *no_packet;
2634 int no_packet_count = 0;
2635 int64_t timer_start;
2636
2637 if (!(no_packet = av_mallocz(nb_input_files)))
2638 exit_program(1);
2639
2640 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2641 if (ret < 0)
2642 goto fail;
2643
2644 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2645 term_init();
2646
2647 timer_start = av_gettime();
2648
2649 for (; received_sigterm == 0;) {
2650 int file_index, ist_index;
2651 AVPacket pkt;
2652 int64_t ipts_min;
2653 double opts_min;
2654
2655 ipts_min = INT64_MAX;
2656 opts_min = 1e100;
2657
2658 /* select the stream that we must read now by looking at the
2659 smallest output pts */
2660 file_index = -1;
2661 for (i = 0; i < nb_output_streams; i++) {
2662 OutputFile *of;
2663 int64_t ipts;
2664 double opts;
2665 ost = &output_streams[i];
2666 of = &output_files[ost->file_index];
2667 os = output_files[ost->file_index].ctx;
2668 ist = &input_streams[ost->source_index];
2669 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2670 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2671 continue;
2672 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2673 ipts = ist->pts;
2674 if (!input_files[ist->file_index].eof_reached) {
2675 if (ipts < ipts_min) {
2676 ipts_min = ipts;
2677 if (input_sync)
2678 file_index = ist->file_index;
2679 }
2680 if (opts < opts_min) {
2681 opts_min = opts;
2682 if (!input_sync) file_index = ist->file_index;
2683 }
2684 }
2685 if (ost->frame_number >= ost->max_frames) {
2686 int j;
2687 for (j = 0; j < of->ctx->nb_streams; j++)
2688 output_streams[of->ost_index + j].is_past_recording_time = 1;
2689 continue;
2690 }
2691 }
2692 /* if none, if is finished */
2693 if (file_index < 0) {
2694 if (no_packet_count) {
2695 no_packet_count = 0;
2696 memset(no_packet, 0, nb_input_files);
2697 usleep(10000);
2698 continue;
2699 }
2700 break;
2701 }
2702
2703 /* read a frame from it and output it in the fifo */
2704 is = input_files[file_index].ctx;
2705 ret = av_read_frame(is, &pkt);
2706 if (ret == AVERROR(EAGAIN)) {
2707 no_packet[file_index] = 1;
2708 no_packet_count++;
2709 continue;
2710 }
2711 if (ret < 0) {
2712 input_files[file_index].eof_reached = 1;
2713 if (opt_shortest)
2714 break;
2715 else
2716 continue;
2717 }
2718
2719 no_packet_count = 0;
2720 memset(no_packet, 0, nb_input_files);
2721
2722 if (do_pkt_dump) {
2723 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2724 is->streams[pkt.stream_index]);
2725 }
2726 /* the following test is needed in case new streams appear
2727 dynamically in stream : we ignore them */
2728 if (pkt.stream_index >= input_files[file_index].nb_streams)
2729 goto discard_packet;
2730 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2731 ist = &input_streams[ist_index];
2732 if (ist->discard)
2733 goto discard_packet;
2734
2735 if (pkt.dts != AV_NOPTS_VALUE)
2736 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2737 if (pkt.pts != AV_NOPTS_VALUE)
2738 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2739
2740 if (pkt.pts != AV_NOPTS_VALUE)
2741 pkt.pts *= ist->ts_scale;
2742 if (pkt.dts != AV_NOPTS_VALUE)
2743 pkt.dts *= ist->ts_scale;
2744
2745 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2746 // ist->next_pts,
2747 // pkt.dts, input_files[ist->file_index].ts_offset,
2748 // ist->st->codec->codec_type);
2749 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2750 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2751 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2752 int64_t delta = pkt_dts - ist->next_pts;
2753 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2754 input_files[ist->file_index].ts_offset -= delta;
2755 av_log(NULL, AV_LOG_DEBUG,
2756 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2757 delta, input_files[ist->file_index].ts_offset);
2758 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2759 if (pkt.pts != AV_NOPTS_VALUE)
2760 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2761 }
2762 }
2763
2764 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2765 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2766
2767 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2768 ist->file_index, ist->st->index);
2769 if (exit_on_error)
2770 exit_program(1);
2771 av_free_packet(&pkt);
2772 continue;
2773 }
2774
2775 discard_packet:
2776 av_free_packet(&pkt);
2777
2778 /* dump report by using the output first video and audio streams */
2779 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2780 }
2781
2782 /* at the end of stream, we must flush the decoder buffers */
2783 for (i = 0; i < nb_input_streams; i++) {
2784 ist = &input_streams[i];
2785 if (ist->decoding_needed) {
2786 output_packet(ist, output_streams, nb_output_streams, NULL);
2787 }
2788 }
2789 flush_encoders(output_streams, nb_output_streams);
2790
2791 term_exit();
2792
2793 /* write the trailer if needed and close file */
2794 for (i = 0; i < nb_output_files; i++) {
2795 os = output_files[i].ctx;
2796 av_write_trailer(os);
2797 }
2798
2799 /* dump report by using the first video and audio streams */
2800 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2801
2802 /* close each encoder */
2803 for (i = 0; i < nb_output_streams; i++) {
2804 ost = &output_streams[i];
2805 if (ost->encoding_needed) {
2806 av_freep(&ost->st->codec->stats_in);
2807 avcodec_close(ost->st->codec);
2808 }
2809 #if CONFIG_AVFILTER
2810 avfilter_graph_free(&ost->graph);
2811 #endif
2812 }
2813
2814 /* close each decoder */
2815 for (i = 0; i < nb_input_streams; i++) {
2816 ist = &input_streams[i];
2817 if (ist->decoding_needed) {
2818 avcodec_close(ist->st->codec);
2819 }
2820 }
2821
2822 /* finished ! */
2823 ret = 0;
2824
2825 fail:
2826 av_freep(&bit_buffer);
2827 av_freep(&no_packet);
2828
2829 if (output_streams) {
2830 for (i = 0; i < nb_output_streams; i++) {
2831 ost = &output_streams[i];
2832 if (ost) {
2833 if (ost->stream_copy)
2834 av_freep(&ost->st->codec->extradata);
2835 if (ost->logfile) {
2836 fclose(ost->logfile);
2837 ost->logfile = NULL;
2838 }
2839 av_fifo_free(ost->fifo); /* works even if fifo is not
2840 initialized but set to zero */
2841 av_freep(&ost->st->codec->subtitle_header);
2842 av_free(ost->pict_tmp.data[0]);
2843 av_free(ost->forced_kf_pts);
2844 if (ost->video_resample)
2845 sws_freeContext(ost->img_resample_ctx);
2846 if (ost->resample)
2847 audio_resample_close(ost->resample);
2848 if (ost->reformat_ctx)
2849 av_audio_convert_free(ost->reformat_ctx);
2850 av_dict_free(&ost->opts);
2851 }
2852 }
2853 }
2854 return ret;
2855 }
2856
2857 static double parse_frame_aspect_ratio(const char *arg)
2858 {
2859 int x = 0, y = 0;
2860 double ar = 0;
2861 const char *p;
2862 char *end;
2863
2864 p = strchr(arg, ':');
2865 if (p) {
2866 x = strtol(arg, &end, 10);
2867 if (end == p)
2868 y = strtol(end + 1, &end, 10);
2869 if (x > 0 && y > 0)
2870 ar = (double)x / (double)y;
2871 } else
2872 ar = strtod(arg, NULL);
2873
2874 if (!ar) {
2875 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2876 exit_program(1);
2877 }
2878 return ar;
2879 }
2880
2881 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2882 {
2883 return parse_option(o, "codec:a", arg, options);
2884 }
2885
2886 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2887 {
2888 return parse_option(o, "codec:v", arg, options);
2889 }
2890
2891 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2892 {
2893 return parse_option(o, "codec:s", arg, options);
2894 }
2895
2896 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2897 {
2898 return parse_option(o, "codec:d", arg, options);
2899 }
2900
2901 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2902 {
2903 StreamMap *m = NULL;
2904 int i, negative = 0, file_idx;
2905 int sync_file_idx = -1, sync_stream_idx;
2906 char *p, *sync;
2907 char *map;
2908
2909 if (*arg == '-') {
2910 negative = 1;
2911 arg++;
2912 }
2913 map = av_strdup(arg);
2914
2915 /* parse sync stream first, just pick first matching stream */
2916 if (sync = strchr(map, ',')) {
2917 *sync = 0;
2918 sync_file_idx = strtol(sync + 1, &sync, 0);
2919 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2920 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2921 exit_program(1);
2922 }
2923 if (*sync)
2924 sync++;
2925 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2926 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2927 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2928 sync_stream_idx = i;
2929 break;
2930 }
2931 if (i == input_files[sync_file_idx].nb_streams) {
2932 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2933 "match any streams.\n", arg);
2934 exit_program(1);
2935 }
2936 }
2937
2938
2939 file_idx = strtol(map, &p, 0);
2940 if (file_idx >= nb_input_files || file_idx < 0) {
2941 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2942 exit_program(1);
2943 }
2944 if (negative)
2945 /* disable some already defined maps */
2946 for (i = 0; i < o->nb_stream_maps; i++) {
2947 m = &o->stream_maps[i];
2948 if (file_idx == m->file_index &&
2949 check_stream_specifier(input_files[m->file_index].ctx,
2950 input_files[m->file_index].ctx->streams[m->stream_index],
2951 *p == ':' ? p + 1 : p) > 0)
2952 m->disabled = 1;
2953 }
2954 else
2955 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2956 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2957 *p == ':' ? p + 1 : p) <= 0)
2958 continue;
2959 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2960 &o->nb_stream_maps, o->nb_stream_maps + 1);
2961 m = &o->stream_maps[o->nb_stream_maps - 1];
2962
2963 m->file_index = file_idx;
2964 m->stream_index = i;
2965
2966 if (sync_file_idx >= 0) {
2967 m->sync_file_index = sync_file_idx;
2968 m->sync_stream_index = sync_stream_idx;
2969 } else {
2970 m->sync_file_index = file_idx;
2971 m->sync_stream_index = i;
2972 }
2973 }
2974
2975 if (!m) {
2976 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2977 exit_program(1);
2978 }
2979
2980 av_freep(&map);
2981 return 0;
2982 }
2983
2984 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2985 {
2986 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2987 &o->nb_attachments, o->nb_attachments + 1);
2988 o->attachments[o->nb_attachments - 1] = arg;
2989 return 0;
2990 }
2991
2992 /**
2993 * Parse a metadata specifier in arg.
2994 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2995 * @param index for type c/p, chapter/program index is written here
2996 * @param stream_spec for type s, the stream specifier is written here
2997 */
2998 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2999 {
3000 if (*arg) {
3001 *type = *arg;
3002 switch (*arg) {
3003 case 'g':
3004 break;
3005 case 's':
3006 if (*(++arg) && *arg != ':') {
3007 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3008 exit_program(1);
3009 }
3010 *stream_spec = *arg == ':' ? arg + 1 : "";
3011 break;
3012 case 'c':
3013 case 'p':
3014 if (*(++arg) == ':')
3015 *index = strtol(++arg, NULL, 0);
3016 break;
3017 default:
3018 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3019 exit_program(1);
3020 }
3021 } else
3022 *type = 'g';
3023 }
3024
3025 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3026 {
3027 AVDictionary **meta_in = NULL;
3028 AVDictionary **meta_out;
3029 int i, ret = 0;
3030 char type_in, type_out;
3031 const char *istream_spec = NULL, *ostream_spec = NULL;
3032 int idx_in = 0, idx_out = 0;
3033
3034 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
3035 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3036
3037 if (type_in == 'g' || type_out == 'g')
3038 o->metadata_global_manual = 1;
3039 if (type_in == 's' || type_out == 's')
3040 o->metadata_streams_manual = 1;
3041 if (type_in == 'c' || type_out == 'c')
3042 o->metadata_chapters_manual = 1;
3043
3044 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3045 if ((index) < 0 || (index) >= (nb_elems)) {\
3046 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3047 (desc), (index));\
3048 exit_program(1);\
3049 }
3050
3051 #define SET_DICT(type, meta, context, index)\
3052 switch (type) {\
3053 case 'g':\
3054 meta = &context->metadata;\
3055 break;\
3056 case 'c':\
3057 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3058 meta = &context->chapters[index]->metadata;\
3059 break;\
3060 case 'p':\
3061 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3062 meta = &context->programs[index]->metadata;\
3063 break;\
3064 }\
3065
3066 SET_DICT(type_in, meta_in, ic, idx_in);
3067 SET_DICT(type_out, meta_out, oc, idx_out);
3068
3069 /* for input streams choose first matching stream */
3070 if (type_in == 's') {
3071 for (i = 0; i < ic->nb_streams; i++) {
3072 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3073 meta_in = &ic->streams[i]->metadata;
3074 break;
3075 } else if (ret < 0)
3076 exit_program(1);
3077 }
3078 if (!meta_in) {
3079 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3080 exit_program(1);
3081 }
3082 }
3083
3084 if (type_out == 's') {
3085 for (i = 0; i < oc->nb_streams; i++) {
3086 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3087 meta_out = &oc->streams[i]->metadata;
3088 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3089 } else if (ret < 0)
3090 exit_program(1);
3091 }
3092 } else
3093 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3094
3095 return 0;
3096 }
3097
3098 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3099 {
3100 const char *codec_string = encoder ? "encoder" : "decoder";
3101 AVCodec *codec;
3102
3103 codec = encoder ?
3104 avcodec_find_encoder_by_name(name) :
3105 avcodec_find_decoder_by_name(name);
3106 if (!codec) {
3107 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3108 exit_program(1);
3109 }
3110 if (codec->type != type) {
3111 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3112 exit_program(1);
3113 }
3114 return codec;
3115 }
3116
3117 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3118 {
3119 char *codec_name = NULL;
3120
3121 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3122 if (codec_name) {
3123 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3124 st->codec->codec_id = codec->id;
3125 return codec;
3126 } else
3127 return avcodec_find_decoder(st->codec->codec_id);
3128 }
3129
3130 /**
3131 * Add all the streams from the given input file to the global
3132 * list of input streams.
3133 */
3134 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3135 {
3136 int i;
3137
3138 for (i = 0; i < ic->nb_streams; i++) {
3139 AVStream *st = ic->streams[i];
3140 AVCodecContext *dec = st->codec;
3141 InputStream *ist;
3142
3143 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3144 ist = &input_streams[nb_input_streams - 1];
3145 ist->st = st;
3146 ist->file_index = nb_input_files;
3147 ist->discard = 1;
3148 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3149
3150 ist->ts_scale = 1.0;
3151 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3152
3153 ist->dec = choose_decoder(o, ic, st);
3154
3155 switch (dec->codec_type) {
3156 case AVMEDIA_TYPE_AUDIO:
3157 if (o->audio_disable)
3158 st->discard = AVDISCARD_ALL;
3159 break;
3160 case AVMEDIA_TYPE_VIDEO:
3161 if (dec->lowres) {
3162 dec->flags |= CODEC_FLAG_EMU_EDGE;
3163 dec->height >>= dec->lowres;
3164 dec->width >>= dec->lowres;
3165 }
3166
3167 if (o->video_disable)
3168 st->discard = AVDISCARD_ALL;
3169 else if (video_discard)
3170 st->discard = video_discard;
3171 break;
3172 case AVMEDIA_TYPE_DATA:
3173 break;
3174 case AVMEDIA_TYPE_SUBTITLE:
3175 if (o->subtitle_disable)
3176 st->discard = AVDISCARD_ALL;
3177 break;
3178 case AVMEDIA_TYPE_ATTACHMENT:
3179 case AVMEDIA_TYPE_UNKNOWN:
3180 break;
3181 default:
3182 abort();
3183 }
3184 }
3185 }
3186
3187 static void assert_file_overwrite(const char *filename)
3188 {
3189 if (!file_overwrite &&
3190 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3191 av_strstart(filename, "file:", NULL))) {
3192 if (avio_check(filename, 0) == 0) {
3193 if (!using_stdin) {
3194 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3195 fflush(stderr);
3196 if (!read_yesno()) {
3197 fprintf(stderr, "Not overwriting - exiting\n");
3198 exit_program(1);
3199 }
3200 }
3201 else {
3202 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3203 exit_program(1);
3204 }
3205 }
3206 }
3207 }
3208
3209 static void dump_attachment(AVStream *st, const char *filename)