817c0cf928f5a00671b159a4a6d20b00af32c055
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/vsrc_buffer.h"
55 #endif
56
57 #if HAVE_SYS_RESOURCE_H
58 #include <sys/types.h>
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #elif HAVE_GETPROCESSTIMES
62 #include <windows.h>
63 #endif
64 #if HAVE_GETPROCESSMEMORYINFO
65 #include <windows.h>
66 #include <psapi.h>
67 #endif
68
69 #if HAVE_SYS_SELECT_H
70 #include <sys/select.h>
71 #endif
72
73 #include <time.h>
74
75 #include "cmdutils.h"
76
77 #include "libavutil/avassert.h"
78
79 #define VSYNC_AUTO -1
80 #define VSYNC_PASSTHROUGH 0
81 #define VSYNC_CFR 1
82 #define VSYNC_VFR 2
83
84 const char program_name[] = "avconv";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct StreamMap {
89 int disabled; /** 1 is this mapping is disabled by a negative map */
90 int file_index;
91 int stream_index;
92 int sync_file_index;
93 int sync_stream_index;
94 } StreamMap;
95
96 /**
97 * select an input file for an output file
98 */
99 typedef struct MetadataMap {
100 int file; ///< file index
101 char type; ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
102 int index; ///< stream/chapter/program number
103 } MetadataMap;
104
105 static const OptionDef options[];
106
107 static int video_discard = 0;
108 static int same_quant = 0;
109 static int do_deinterlace = 0;
110 static int intra_dc_precision = 8;
111 static int qp_hist = 0;
112
113 static int file_overwrite = 0;
114 static int do_benchmark = 0;
115 static int do_hex_dump = 0;
116 static int do_pkt_dump = 0;
117 static int do_pass = 0;
118 static char *pass_logfilename_prefix = NULL;
119 static int video_sync_method = VSYNC_AUTO;
120 static int audio_sync_method = 0;
121 static float audio_drift_threshold = 0.1;
122 static int copy_ts = 0;
123 static int copy_tb = 1;
124 static int opt_shortest = 0;
125 static char *vstats_filename;
126 static FILE *vstats_file;
127
128 static int audio_volume = 256;
129
130 static int exit_on_error = 0;
131 static int using_stdin = 0;
132 static int64_t video_size = 0;
133 static int64_t audio_size = 0;
134 static int64_t extra_size = 0;
135 static int nb_frames_dup = 0;
136 static int nb_frames_drop = 0;
137 static int input_sync;
138
139 static float dts_delta_threshold = 10;
140
141 static int print_stats = 1;
142
143 static uint8_t *audio_buf;
144 static uint8_t *audio_out;
145 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
146
147 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
148
149 typedef struct FrameBuffer {
150 uint8_t *base[4];
151 uint8_t *data[4];
152 int linesize[4];
153
154 int h, w;
155 enum PixelFormat pix_fmt;
156
157 int refcount;
158 struct InputStream *ist;
159 struct FrameBuffer *next;
160 } FrameBuffer;
161
162 typedef struct InputStream {
163 int file_index;
164 AVStream *st;
165 int discard; /* true if stream data should be discarded */
166 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
167 AVCodec *dec;
168 AVFrame *decoded_frame;
169 AVFrame *filtered_frame;
170
171 int64_t start; /* time when read started */
172 int64_t next_pts; /* synthetic pts for cases where pkt.pts
173 is not defined */
174 int64_t pts; /* current pts */
175 PtsCorrectionContext pts_ctx;
176 double ts_scale;
177 int is_start; /* is 1 at the start and after a discontinuity */
178 int showed_multi_packet_warning;
179 AVDictionary *opts;
180
181 /* a pool of free buffers for decoded data */
182 FrameBuffer *buffer_pool;
183 } InputStream;
184
185 typedef struct InputFile {
186 AVFormatContext *ctx;
187 int eof_reached; /* true if eof reached */
188 int ist_index; /* index of first stream in ist_table */
189 int buffer_size; /* current total buffer size */
190 int64_t ts_offset;
191 int nb_streams; /* number of stream that avconv is aware of; may be different
192 from ctx.nb_streams if new streams appear during av_read_frame() */
193 int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197 int file_index; /* file index */
198 int index; /* stream index in the output file */
199 int source_index; /* InputStream index */
200 AVStream *st; /* stream in the output file */
201 int encoding_needed; /* true if encoding needed for this stream */
202 int frame_number;
203 /* input pts and corresponding output pts
204 for A/V sync */
205 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
206 struct InputStream *sync_ist; /* input stream to sync against */
207 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
208 AVBitStreamFilterContext *bitstream_filters;
209 AVCodec *enc;
210 int64_t max_frames;
211
212 /* video only */
213 int video_resample;
214 AVFrame pict_tmp; /* temporary image for resampling */
215 struct SwsContext *img_resample_ctx; /* for image resampling */
216 int resample_height;
217 int resample_width;
218 int resample_pix_fmt;
219 AVRational frame_rate;
220 int force_fps;
221 int top_field_first;
222
223 float frame_aspect_ratio;
224
225 /* forced key frames */
226 int64_t *forced_kf_pts;
227 int forced_kf_count;
228 int forced_kf_index;
229
230 /* audio only */
231 int audio_resample;
232 ReSampleContext *resample; /* for audio resampling */
233 int resample_sample_fmt;
234 int resample_channels;
235 int resample_sample_rate;
236 int reformat_pair;
237 AVAudioConvert *reformat_ctx;
238 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
239 FILE *logfile;
240
241 #if CONFIG_AVFILTER
242 AVFilterContext *output_video_filter;
243 AVFilterContext *input_video_filter;
244 AVFilterBufferRef *picref;
245 char *avfilter;
246 AVFilterGraph *graph;
247 #endif
248
249 int64_t sws_flags;
250 AVDictionary *opts;
251 int is_past_recording_time;
252 int stream_copy;
253 const char *attachment_filename;
254 int copy_initial_nonkeyframes;
255 } OutputStream;
256
257
258 typedef struct OutputFile {
259 AVFormatContext *ctx;
260 AVDictionary *opts;
261 int ost_index; /* index of the first stream in output_streams */
262 int64_t recording_time; /* desired length of the resulting file in microseconds */
263 int64_t start_time; /* start time in microseconds */
264 uint64_t limit_filesize;
265 } OutputFile;
266
267 static InputStream *input_streams = NULL;
268 static int nb_input_streams = 0;
269 static InputFile *input_files = NULL;
270 static int nb_input_files = 0;
271
272 static OutputStream *output_streams = NULL;
273 static int nb_output_streams = 0;
274 static OutputFile *output_files = NULL;
275 static int nb_output_files = 0;
276
277 typedef struct OptionsContext {
278 /* input/output options */
279 int64_t start_time;
280 const char *format;
281
282 SpecifierOpt *codec_names;
283 int nb_codec_names;
284 SpecifierOpt *audio_channels;
285 int nb_audio_channels;
286 SpecifierOpt *audio_sample_rate;
287 int nb_audio_sample_rate;
288 SpecifierOpt *frame_rates;
289 int nb_frame_rates;
290 SpecifierOpt *frame_sizes;
291 int nb_frame_sizes;
292 SpecifierOpt *frame_pix_fmts;
293 int nb_frame_pix_fmts;
294
295 /* input options */
296 int64_t input_ts_offset;
297 int rate_emu;
298
299 SpecifierOpt *ts_scale;
300 int nb_ts_scale;
301 SpecifierOpt *dump_attachment;
302 int nb_dump_attachment;
303
304 /* output options */
305 StreamMap *stream_maps;
306 int nb_stream_maps;
307 /* first item specifies output metadata, second is input */
308 MetadataMap (*meta_data_maps)[2];
309 int nb_meta_data_maps;
310 int metadata_global_manual;
311 int metadata_streams_manual;
312 int metadata_chapters_manual;
313 const char **attachments;
314 int nb_attachments;
315
316 int chapters_input_file;
317
318 int64_t recording_time;
319 uint64_t limit_filesize;
320 float mux_preload;
321 float mux_max_delay;
322
323 int video_disable;
324 int audio_disable;
325 int subtitle_disable;
326 int data_disable;
327
328 /* indexed by output file stream index */
329 int *streamid_map;
330 int nb_streamid_map;
331
332 SpecifierOpt *metadata;
333 int nb_metadata;
334 SpecifierOpt *max_frames;
335 int nb_max_frames;
336 SpecifierOpt *bitstream_filters;
337 int nb_bitstream_filters;
338 SpecifierOpt *codec_tags;
339 int nb_codec_tags;
340 SpecifierOpt *sample_fmts;
341 int nb_sample_fmts;
342 SpecifierOpt *qscale;
343 int nb_qscale;
344 SpecifierOpt *forced_key_frames;
345 int nb_forced_key_frames;
346 SpecifierOpt *force_fps;
347 int nb_force_fps;
348 SpecifierOpt *frame_aspect_ratios;
349 int nb_frame_aspect_ratios;
350 SpecifierOpt *rc_overrides;
351 int nb_rc_overrides;
352 SpecifierOpt *intra_matrices;
353 int nb_intra_matrices;
354 SpecifierOpt *inter_matrices;
355 int nb_inter_matrices;
356 SpecifierOpt *top_field_first;
357 int nb_top_field_first;
358 SpecifierOpt *metadata_map;
359 int nb_metadata_map;
360 SpecifierOpt *presets;
361 int nb_presets;
362 SpecifierOpt *copy_initial_nonkeyframes;
363 int nb_copy_initial_nonkeyframes;
364 #if CONFIG_AVFILTER
365 SpecifierOpt *filters;
366 int nb_filters;
367 #endif
368 } OptionsContext;
369
370 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
371 {\
372 int i, ret;\
373 for (i = 0; i < o->nb_ ## name; i++) {\
374 char *spec = o->name[i].specifier;\
375 if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
376 outvar = o->name[i].u.type;\
377 else if (ret < 0)\
378 exit_program(1);\
379 }\
380 }
381
382 static void reset_options(OptionsContext *o)
383 {
384 const OptionDef *po = options;
385
386 /* all OPT_SPEC and OPT_STRING can be freed in generic way */
387 while (po->name) {
388 void *dst = (uint8_t*)o + po->u.off;
389
390 if (po->flags & OPT_SPEC) {
391 SpecifierOpt **so = dst;
392 int i, *count = (int*)(so + 1);
393 for (i = 0; i < *count; i++) {
394 av_freep(&(*so)[i].specifier);
395 if (po->flags & OPT_STRING)
396 av_freep(&(*so)[i].u.str);
397 }
398 av_freep(so);
399 *count = 0;
400 } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
401 av_freep(dst);
402 po++;
403 }
404
405 av_freep(&o->stream_maps);
406 av_freep(&o->meta_data_maps);
407 av_freep(&o->streamid_map);
408
409 memset(o, 0, sizeof(*o));
410
411 o->mux_max_delay = 0.7;
412 o->recording_time = INT64_MAX;
413 o->limit_filesize = UINT64_MAX;
414 o->chapters_input_file = INT_MAX;
415
416 uninit_opts();
417 init_opts();
418 }
419
420 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
421 {
422 AVCodecContext *s = ist->st->codec;
423 FrameBuffer *buf = av_mallocz(sizeof(*buf));
424 int ret;
425 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
426 int h_chroma_shift, v_chroma_shift;
427 int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
428 int w = s->width, h = s->height;
429
430 if (!buf)
431 return AVERROR(ENOMEM);
432
433 if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
434 w += 2*edge;
435 h += 2*edge;
436 }
437
438 avcodec_align_dimensions(s, &w, &h);
439 if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
440 s->pix_fmt, 32)) < 0) {
441 av_freep(&buf);
442 return ret;
443 }
444 /* XXX this shouldn't be needed, but some tests break without this line
445 * those decoders are buggy and need to be fixed.
446 * the following tests fail:
447 * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
448 */
449 memset(buf->base[0], 128, ret);
450
451 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
452 for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
453 const int h_shift = i==0 ? 0 : h_chroma_shift;
454 const int v_shift = i==0 ? 0 : v_chroma_shift;
455 if (s->flags & CODEC_FLAG_EMU_EDGE)
456 buf->data[i] = buf->base[i];
457 else
458 buf->data[i] = buf->base[i] +
459 FFALIGN((buf->linesize[i]*edge >> v_shift) +
460 (pixel_size*edge >> h_shift), 32);
461 }
462 buf->w = s->width;
463 buf->h = s->height;
464 buf->pix_fmt = s->pix_fmt;
465 buf->ist = ist;
466
467 *pbuf = buf;
468 return 0;
469 }
470
471 static void free_buffer_pool(InputStream *ist)
472 {
473 FrameBuffer *buf = ist->buffer_pool;
474 while (buf) {
475 ist->buffer_pool = buf->next;
476 av_freep(&buf->base[0]);
477 av_free(buf);
478 buf = ist->buffer_pool;
479 }
480 }
481
482 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
483 {
484 av_assert0(buf->refcount);
485 buf->refcount--;
486 if (!buf->refcount) {
487 buf->next = ist->buffer_pool;
488 ist->buffer_pool = buf;
489 }
490 }
491
492 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
493 {
494 InputStream *ist = s->opaque;
495 FrameBuffer *buf;
496 int ret, i;
497
498 if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
499 return ret;
500
501 buf = ist->buffer_pool;
502 ist->buffer_pool = buf->next;
503 buf->next = NULL;
504 if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
505 av_freep(&buf->base[0]);
506 av_free(buf);
507 if ((ret = alloc_buffer(ist, &buf)) < 0)
508 return ret;
509 }
510 buf->refcount++;
511
512 frame->opaque = buf;
513 frame->type = FF_BUFFER_TYPE_USER;
514 frame->extended_data = frame->data;
515 frame->pkt_pts = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
516
517 for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
518 frame->base[i] = buf->base[i]; // XXX h264.c uses base though it shouldn't
519 frame->data[i] = buf->data[i];
520 frame->linesize[i] = buf->linesize[i];
521 }
522
523 return 0;
524 }
525
526 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
527 {
528 InputStream *ist = s->opaque;
529 FrameBuffer *buf = frame->opaque;
530 int i;
531
532 for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
533 frame->data[i] = NULL;
534
535 unref_buffer(ist, buf);
536 }
537
538 static void filter_release_buffer(AVFilterBuffer *fb)
539 {
540 FrameBuffer *buf = fb->priv;
541 av_free(fb);
542 unref_buffer(buf->ist, buf);
543 }
544
545 #if CONFIG_AVFILTER
546
547 static int configure_video_filters(InputStream *ist, OutputStream *ost)
548 {
549 AVFilterContext *last_filter, *filter;
550 /** filter graph containing all filters including input & output */
551 AVCodecContext *codec = ost->st->codec;
552 AVCodecContext *icodec = ist->st->codec;
553 FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
554 AVRational sample_aspect_ratio;
555 char args[255];
556 int ret;
557
558 ost->graph = avfilter_graph_alloc();
559
560 if (ist->st->sample_aspect_ratio.num) {
561 sample_aspect_ratio = ist->st->sample_aspect_ratio;
562 } else
563 sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
564
565 snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
566 ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
567 sample_aspect_ratio.num, sample_aspect_ratio.den);
568
569 ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
570 "src", args, NULL, ost->graph);
571 if (ret < 0)
572 return ret;
573 ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
574 "out", NULL, &ffsink_ctx, ost->graph);
575 if (ret < 0)
576 return ret;
577 last_filter = ost->input_video_filter;
578
579 if (codec->width != icodec->width || codec->height != icodec->height) {
580 snprintf(args, 255, "%d:%d:flags=0x%X",
581 codec->width,
582 codec->height,
583 (unsigned)ost->sws_flags);
584 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
585 NULL, args, NULL, ost->graph)) < 0)
586 return ret;
587 if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
588 return ret;
589 last_filter = filter;
590 }
591
592 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
593 ost->graph->scale_sws_opts = av_strdup(args);
594
595 if (ost->avfilter) {
596 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
597 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
598
599 outputs->name = av_strdup("in");
600 outputs->filter_ctx = last_filter;
601 outputs->pad_idx = 0;
602 outputs->next = NULL;
603
604 inputs->name = av_strdup("out");
605 inputs->filter_ctx = ost->output_video_filter;
606 inputs->pad_idx = 0;
607 inputs->next = NULL;
608
609 if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
610 return ret;
611 } 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 CONFIG_AVFILTER
684 av_freep(&output_streams[i].avfilter);
685 #endif
686 }
687 for (i = 0; i < nb_input_files; i++) {
688 avformat_close_input(&input_files[i].ctx);
689 }
690 for (i = 0; i < nb_input_streams; i++) {
691 av_freep(&input_streams[i].decoded_frame);
692 av_freep(&input_streams[i].filtered_frame);
693 av_dict_free(&input_streams[i].opts);
694 free_buffer_pool(&input_streams[i]);
695 }
696
697 if (vstats_file)
698 fclose(vstats_file);
699 av_free(vstats_filename);
700
701 av_freep(&input_streams);
702 av_freep(&input_files);
703 av_freep(&output_streams);
704 av_freep(&output_files);
705
706 uninit_opts();
707 av_free(audio_buf);
708 av_free(audio_out);
709 allocated_audio_buf_size = allocated_audio_out_size = 0;
710
711 #if CONFIG_AVFILTER
712 avfilter_uninit();
713 #endif
714 avformat_network_deinit();
715
716 if (received_sigterm) {
717 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
718 (int) received_sigterm);
719 exit (255);
720 }
721
722 exit(ret);
723 }
724
725 static void assert_avoptions(AVDictionary *m)
726 {
727 AVDictionaryEntry *t;
728 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
729 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
730 exit_program(1);
731 }
732 }
733
734 static void assert_codec_experimental(AVCodecContext *c, int encoder)
735 {
736 const char *codec_string = encoder ? "encoder" : "decoder";
737 AVCodec *codec;
738 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
739 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
740 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
741 "results.\nAdd '-strict experimental' if you want to use it.\n",
742 codec_string, c->codec->name);
743 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
744 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
745 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
746 codec_string, codec->name);
747 exit_program(1);
748 }
749 }
750
751 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
752 {
753 if (codec && codec->sample_fmts) {
754 const enum AVSampleFormat *p = codec->sample_fmts;
755 for (; *p != -1; p++) {
756 if (*p == st->codec->sample_fmt)
757 break;
758 }
759 if (*p == -1) {
760 av_log(NULL, AV_LOG_WARNING,
761 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
762 av_get_sample_fmt_name(st->codec->sample_fmt),
763 codec->name,
764 av_get_sample_fmt_name(codec->sample_fmts[0]));
765 st->codec->sample_fmt = codec->sample_fmts[0];
766 }
767 }
768 }
769
770 /**
771 * Update the requested input sample format based on the output sample format.
772 * This is currently only used to request float output from decoders which
773 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
774 * Ideally this will be removed in the future when decoders do not do format
775 * conversion and only output in their native format.
776 */
777 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
778 AVCodecContext *enc)
779 {
780 /* if sample formats match or a decoder sample format has already been
781 requested, just return */
782 if (enc->sample_fmt == dec->sample_fmt ||
783 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
784 return;
785
786 /* if decoder supports more than one output format */
787 if (dec_codec && dec_codec->sample_fmts &&
788 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
789 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
790 const enum AVSampleFormat *p;
791 int min_dec = -1, min_inc = -1;
792
793 /* find a matching sample format in the encoder */
794 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
795 if (*p == enc->sample_fmt) {
796 dec->request_sample_fmt = *p;
797 return;
798 } else if (*p > enc->sample_fmt) {
799 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
800 } else
801 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
802 }
803
804 /* if none match, provide the one that matches quality closest */
805 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
806 enc->sample_fmt - min_dec;
807 }
808 }
809
810 static void choose_sample_rate(AVStream *st, AVCodec *codec)
811 {
812 if (codec && codec->supported_samplerates) {
813 const int *p = codec->supported_samplerates;
814 int best = 0;
815 int best_dist = INT_MAX;
816 for (; *p; p++) {
817 int dist = abs(st->codec->sample_rate - *p);
818 if (dist < best_dist) {
819 best_dist = dist;
820 best = *p;
821 }
822 }
823 if (best_dist) {
824 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
825 }
826 st->codec->sample_rate = best;
827 }
828 }
829
830 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
831 {
832 if (codec && codec->pix_fmts) {
833 const enum PixelFormat *p = codec->pix_fmts;
834 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
835 if (st->codec->codec_id == CODEC_ID_MJPEG) {
836 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
837 } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
838 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
839 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
840 }
841 }
842 for (; *p != PIX_FMT_NONE; p++) {
843 if (*p == st->codec->pix_fmt)
844 break;
845 }
846 if (*p == PIX_FMT_NONE) {
847 if (st->codec->pix_fmt != PIX_FMT_NONE)
848 av_log(NULL, AV_LOG_WARNING,
849 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
850 av_pix_fmt_descriptors[st->codec->pix_fmt].name,
851 codec->name,
852 av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
853 st->codec->pix_fmt = codec->pix_fmts[0];
854 }
855 }
856 }
857
858 static double
859 get_sync_ipts(const OutputStream *ost)
860 {
861 const InputStream *ist = ost->sync_ist;
862 OutputFile *of = &output_files[ost->file_index];
863 return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
864 }
865
866 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
867 {
868 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
869 AVCodecContext *avctx = ost->st->codec;
870 int ret;
871
872 while (bsfc) {
873 AVPacket new_pkt = *pkt;
874 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
875 &new_pkt.data, &new_pkt.size,
876 pkt->data, pkt->size,
877 pkt->flags & AV_PKT_FLAG_KEY);
878 if (a > 0) {
879 av_free_packet(pkt);
880 new_pkt.destruct = av_destruct_packet;
881 } else if (a < 0) {
882 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
883 bsfc->filter->name, pkt->stream_index,
884 avctx->codec ? avctx->codec->name : "copy");
885 print_error("", a);
886 if (exit_on_error)
887 exit_program(1);
888 }
889 *pkt = new_pkt;
890
891 bsfc = bsfc->next;
892 }
893
894 ret = av_interleaved_write_frame(s, pkt);
895 if (ret < 0) {
896 print_error("av_interleaved_write_frame()", ret);
897 exit_program(1);
898 }
899 ost->frame_number++;
900 }
901
902 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
903 {
904 int fill_char = 0x00;
905 if (sample_fmt == AV_SAMPLE_FMT_U8)
906 fill_char = 0x80;
907 memset(buf, fill_char, size);
908 }
909
910 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
911 InputStream *ist, AVFrame *decoded_frame)
912 {
913 uint8_t *buftmp;
914 int64_t audio_out_size, audio_buf_size;
915
916 int size_out, frame_bytes, ret, resample_changed;
917 AVCodecContext *enc = ost->st->codec;
918 AVCodecContext *dec = ist->st->codec;
919 int osize = av_get_bytes_per_sample(enc->sample_fmt);
920 int isize = av_get_bytes_per_sample(dec->sample_fmt);
921 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
922 uint8_t *buf = decoded_frame->data[0];
923 int size = decoded_frame->nb_samples * dec->channels * isize;
924 int64_t allocated_for_size = size;
925
926 need_realloc:
927 audio_buf_size = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
928 audio_buf_size = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
929 audio_buf_size = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
930 audio_buf_size = FFMAX(audio_buf_size, enc->frame_size);
931 audio_buf_size *= osize * enc->channels;
932
933 audio_out_size = FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
934 if (coded_bps > 8 * osize)
935 audio_out_size = audio_out_size * coded_bps / (8*osize);
936 audio_out_size += FF_MIN_BUFFER_SIZE;
937
938 if (audio_out_size > INT_MAX || audio_buf_size > INT_MAX) {
939 av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
940 exit_program(1);
941 }
942
943 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
944 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
945 if (!audio_buf || !audio_out) {
946 av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
947 exit_program(1);
948 }
949
950 if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
951 ost->audio_resample = 1;
952
953 resample_changed = ost->resample_sample_fmt != dec->sample_fmt ||
954 ost->resample_channels != dec->channels ||
955 ost->resample_sample_rate != dec->sample_rate;
956
957 if ((ost->audio_resample && !ost->resample) || resample_changed) {
958 if (resample_changed) {
959 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",
960 ist->file_index, ist->st->index,
961 ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
962 dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
963 ost->resample_sample_fmt = dec->sample_fmt;
964 ost->resample_channels = dec->channels;
965 ost->resample_sample_rate = dec->sample_rate;
966 if (ost->resample)
967 audio_resample_close(ost->resample);
968 }
969 /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
970 if (audio_sync_method <= 1 &&
971 ost->resample_sample_fmt == enc->sample_fmt &&
972 ost->resample_channels == enc->channels &&
973 ost->resample_sample_rate == enc->sample_rate) {
974 ost->resample = NULL;
975 ost->audio_resample = 0;
976 } else if (ost->audio_resample) {
977 if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
978 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
979 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
980 enc->sample_rate, dec->sample_rate,
981 enc->sample_fmt, dec->sample_fmt,
982 16, 10, 0, 0.8);
983 if (!ost->resample) {
984 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
985 dec->channels, dec->sample_rate,
986 enc->channels, enc->sample_rate);
987 exit_program(1);
988 }
989 }
990 }
991
992 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
993 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt &&
994 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt) != ost->reformat_pair) {
995 if (ost->reformat_ctx)
996 av_audio_convert_free(ost->reformat_ctx);
997 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
998 dec->sample_fmt, 1, NULL, 0);
999 if (!ost->reformat_ctx) {
1000 av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
1001 av_get_sample_fmt_name(dec->sample_fmt),
1002 av_get_sample_fmt_name(enc->sample_fmt));
1003 exit_program(1);
1004 }
1005 ost->reformat_pair = MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
1006 }
1007
1008 if (audio_sync_method) {
1009 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1010 av_fifo_size(ost->fifo) / (enc->channels * osize);
1011 int idelta = delta * dec->sample_rate / enc->sample_rate;
1012 int byte_delta = idelta * isize * dec->channels;
1013
1014 // FIXME resample delay
1015 if (fabs(delta) > 50) {
1016 if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1017 if (byte_delta < 0) {
1018 byte_delta = FFMAX(byte_delta, -size);
1019 size += byte_delta;
1020 buf -= byte_delta;
1021 av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1022 -byte_delta / (isize * dec->channels));
1023 if (!size)
1024 return;
1025 ist->is_start = 0;
1026 } else {
1027 static uint8_t *input_tmp = NULL;
1028 input_tmp = av_realloc(input_tmp, byte_delta + size);
1029
1030 if (byte_delta > allocated_for_size - size) {
1031 allocated_for_size = byte_delta + (int64_t)size;
1032 goto need_realloc;
1033 }
1034 ist->is_start = 0;
1035
1036 generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1037 memcpy(input_tmp + byte_delta, buf, size);
1038 buf = input_tmp;
1039 size += byte_delta;
1040 av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1041 }
1042 } else if (audio_sync_method > 1) {
1043 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1044 av_assert0(ost->audio_resample);
1045 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1046 delta, comp, enc->sample_rate);
1047 // 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));
1048 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1049 }
1050 }
1051 } else
1052 ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1053 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1054
1055 if (ost->audio_resample) {
1056 buftmp = audio_buf;
1057 size_out = audio_resample(ost->resample,
1058 (short *)buftmp, (short *)buf,
1059 size / (dec->channels * isize));
1060 size_out = size_out * enc->channels * osize;
1061 } else {
1062 buftmp = buf;
1063 size_out = size;
1064 }
1065
1066 if (!ost->audio_resample && dec->sample_fmt != enc->sample_fmt) {
1067 const void *ibuf[6] = { buftmp };
1068 void *obuf[6] = { audio_buf };
1069 int istride[6] = { isize };
1070 int ostride[6] = { osize };
1071 int len = size_out / istride[0];
1072 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
1073 printf("av_audio_convert() failed\n");
1074 if (exit_on_error)
1075 exit_program(1);
1076 return;
1077 }
1078 buftmp = audio_buf;
1079 size_out = len * osize;
1080 }
1081
1082 /* now encode as many frames as possible */
1083 if (enc->frame_size > 1) {
1084 /* output resampled raw samples */
1085 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1086 av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1087 exit_program(1);
1088 }
1089 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1090
1091 frame_bytes = enc->frame_size * osize * enc->channels;
1092
1093 while (av_fifo_size(ost->fifo) >= frame_bytes) {
1094 AVPacket pkt;
1095 av_init_packet(&pkt);
1096
1097 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1098
1099 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1100
1101 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1102 (short *)audio_buf);
1103 if (ret < 0) {
1104 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1105 exit_program(1);
1106 }
1107 audio_size += ret;
1108 pkt.stream_index = ost->index;
1109 pkt.data = audio_out;
1110 pkt.size = ret;
1111 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1112 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1113 pkt.flags |= AV_PKT_FLAG_KEY;
1114 write_frame(s, &pkt, ost);
1115
1116 ost->sync_opts += enc->frame_size;
1117 }
1118 } else {
1119 AVPacket pkt;
1120 av_init_packet(&pkt);
1121
1122 ost->sync_opts += size_out / (osize * enc->channels);
1123
1124 /* output a pcm frame */
1125 /* determine the size of the coded buffer */
1126 size_out /= osize;
1127 if (coded_bps)
1128 size_out = size_out * coded_bps / 8;
1129
1130 if (size_out > audio_out_size) {
1131 av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1132 exit_program(1);
1133 }
1134
1135 // FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1136 ret = avcodec_encode_audio(enc, audio_out, size_out,
1137 (short *)buftmp);
1138 if (ret < 0) {
1139 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1140 exit_program(1);
1141 }
1142 audio_size += ret;
1143 pkt.stream_index = ost->index;
1144 pkt.data = audio_out;
1145 pkt.size = ret;
1146 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1147 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1148 pkt.flags |= AV_PKT_FLAG_KEY;
1149 write_frame(s, &pkt, ost);
1150 }
1151 }
1152
1153 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1154 {
1155 AVCodecContext *dec;
1156 AVPicture *picture2;
1157 AVPicture picture_tmp;
1158 uint8_t *buf = 0;
1159
1160 dec = ist->st->codec;
1161
1162 /* deinterlace : must be done before any resize */
1163 if (do_deinterlace) {
1164 int size;
1165
1166 /* create temporary picture */
1167 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1168 buf = av_malloc(size);
1169 if (!buf)
1170 return;
1171
1172 picture2 = &picture_tmp;
1173 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1174
1175 if (avpicture_deinterlace(picture2, picture,
1176 dec->pix_fmt, dec->width, dec->height) < 0) {
1177 /* if error, do not deinterlace */
1178 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1179 av_free(buf);
1180 buf = NULL;
1181 picture2 = picture;
1182 }
1183 } else {
1184 picture2 = picture;
1185 }
1186
1187 if (picture != picture2)
1188 *picture = *picture2;
1189 *bufp = buf;
1190 }
1191
1192 static void do_subtitle_out(AVFormatContext *s,
1193 OutputStream *ost,
1194 InputStream *ist,
1195 AVSubtitle *sub,
1196 int64_t pts)
1197 {
1198 static uint8_t *subtitle_out = NULL;
1199 int subtitle_out_max_size = 1024 * 1024;
1200 int subtitle_out_size, nb, i;
1201 AVCodecContext *enc;
1202 AVPacket pkt;
1203
1204 if (pts == AV_NOPTS_VALUE) {
1205 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1206 if (exit_on_error)
1207 exit_program(1);
1208 return;
1209 }
1210
1211 enc = ost->st->codec;
1212
1213 if (!subtitle_out) {
1214 subtitle_out = av_malloc(subtitle_out_max_size);
1215 }
1216
1217 /* Note: DVB subtitle need one packet to draw them and one other
1218 packet to clear them */
1219 /* XXX: signal it in the codec context ? */
1220 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1221 nb = 2;
1222 else
1223 nb = 1;
1224
1225 for (i = 0; i < nb; i++) {
1226 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1227 // start_display_time is required to be 0
1228 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1229 sub->end_display_time -= sub->start_display_time;
1230 sub->start_display_time = 0;
1231 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1232 subtitle_out_max_size, sub);
1233 if (subtitle_out_size < 0) {
1234 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1235 exit_program(1);
1236 }
1237
1238 av_init_packet(&pkt);
1239 pkt.stream_index = ost->index;
1240 pkt.data = subtitle_out;
1241 pkt.size = subtitle_out_size;
1242 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1243 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1244 /* XXX: the pts correction is handled here. Maybe handling
1245 it in the codec would be better */
1246 if (i == 0)
1247 pkt.pts += 90 * sub->start_display_time;
1248 else
1249 pkt.pts += 90 * sub->end_display_time;
1250 }
1251 write_frame(s, &pkt, ost);
1252 }
1253 }
1254
1255 static int bit_buffer_size = 1024 * 256;
1256 static uint8_t *bit_buffer = NULL;
1257
1258 #if !CONFIG_AVFILTER
1259 static void do_video_resample(OutputStream *ost,
1260 InputStream *ist,
1261 AVFrame *in_picture,
1262 AVFrame **out_picture)
1263 {
1264 int resample_changed = 0;
1265 *out_picture = in_picture;
1266
1267 resample_changed = ost->resample_width != in_picture->width ||
1268 ost->resample_height != in_picture->height ||
1269 ost->resample_pix_fmt != in_picture->format;
1270
1271 if (resample_changed) {
1272 av_log(NULL, AV_LOG_INFO,
1273 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1274 ist->file_index, ist->st->index,
1275 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1276 in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
1277 if (!ost->video_resample)
1278 ost->video_resample = 1;
1279 }
1280
1281 if (ost->video_resample) {
1282 *out_picture = &ost->pict_tmp;
1283 if (resample_changed) {
1284 /* initialize a new scaler context */
1285 sws_freeContext(ost->img_resample_ctx);
1286 ost->img_resample_ctx = sws_getContext(
1287 ist->st->codec->width,
1288 ist->st->codec->height,
1289 ist->st->codec->pix_fmt,
1290 ost->st->codec->width,
1291 ost->st->codec->height,
1292 ost->st->codec->pix_fmt,
1293 ost->sws_flags, NULL, NULL, NULL);
1294 if (ost->img_resample_ctx == NULL) {
1295 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1296 exit_program(1);
1297 }
1298 }
1299 sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1300 0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1301 }
1302 if (resample_changed) {
1303 ost->resample_width = in_picture->width;
1304 ost->resample_height = in_picture->height;
1305 ost->resample_pix_fmt = in_picture->format;
1306 }
1307 }
1308 #endif
1309
1310
1311 static void do_video_out(AVFormatContext *s,
1312 OutputStream *ost,
1313 InputStream *ist,
1314 AVFrame *in_picture,
1315 int *frame_size, float quality)
1316 {
1317 int nb_frames, i, ret, format_video_sync;
1318 AVFrame *final_picture;
1319 AVCodecContext *enc;
1320 double sync_ipts;
1321
1322 enc = ost->st->codec;
1323
1324 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1325
1326 /* by default, we output a single frame */
1327 nb_frames = 1;
1328
1329 *frame_size = 0;
1330
1331 format_video_sync = video_sync_method;
1332 if (format_video_sync == VSYNC_AUTO)
1333 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
1334 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
1335
1336 if (format_video_sync != VSYNC_PASSTHROUGH) {
1337 double vdelta = sync_ipts - ost->sync_opts;
1338 // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1339 if (vdelta < -1.1)
1340 nb_frames = 0;
1341 else if (format_video_sync == VSYNC_VFR) {
1342 if (vdelta <= -0.6) {
1343 nb_frames = 0;
1344 } else if (vdelta > 0.6)
1345 ost->sync_opts = lrintf(sync_ipts);
1346 } else if (vdelta > 1.1)
1347 nb_frames = lrintf(vdelta);
1348 //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);
1349 if (nb_frames == 0) {
1350 ++nb_frames_drop;
1351 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1352 } else if (nb_frames > 1) {
1353 nb_frames_dup += nb_frames - 1;
1354 av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1355 }
1356 } else
1357 ost->sync_opts = lrintf(sync_ipts);
1358
1359 nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1360 if (nb_frames <= 0)
1361 return;
1362
1363 #if !CONFIG_AVFILTER
1364 do_video_resample(ost, ist, in_picture, &final_picture);
1365 #else
1366 final_picture = in_picture;
1367 #endif
1368
1369 /* duplicates frame if needed */
1370 for (i = 0; i < nb_frames; i++) {
1371 AVPacket pkt;
1372 av_init_packet(&pkt);
1373 pkt.stream_index = ost->index;
1374
1375 if (s->oformat->flags & AVFMT_RAWPICTURE &&
1376 enc->codec->id == CODEC_ID_RAWVIDEO) {
1377 /* raw pictures are written as AVPicture structure to
1378 avoid any copies. We support temporarily the older
1379 method. */
1380 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1381 enc->coded_frame->top_field_first = in_picture->top_field_first;
1382 pkt.data = (uint8_t *)final_picture;
1383 pkt.size = sizeof(AVPicture);
1384 pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1385 pkt.flags |= AV_PKT_FLAG_KEY;
1386
1387 write_frame(s, &pkt, ost);
1388 } else {
1389 AVFrame big_picture;
1390
1391 big_picture = *final_picture;
1392 /* better than nothing: use input picture interlaced
1393 settings */
1394 big_picture.interlaced_frame = in_picture->interlaced_frame;
1395 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1396 if (ost->top_field_first == -1)
1397 big_picture.top_field_first = in_picture->top_field_first;
1398 else
1399 big_picture.top_field_first = !!ost->top_field_first;
1400 }
1401
1402 /* handles same_quant here. This is not correct because it may
1403 not be a global option */
1404 big_picture.quality = quality;
1405 if (!enc->me_threshold)
1406 big_picture.pict_type = 0;
1407 // big_picture.pts = AV_NOPTS_VALUE;
1408 big_picture.pts = ost->sync_opts;
1409 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1410 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1411 if (ost->forced_kf_index < ost->forced_kf_count &&
1412 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1413 big_picture.pict_type = AV_PICTURE_TYPE_I;
1414 ost->forced_kf_index++;
1415 }
1416 ret = avcodec_encode_video(enc,
1417 bit_buffer, bit_buffer_size,
1418 &big_picture);
1419 if (ret < 0) {
1420 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1421 exit_program(1);
1422 }
1423
1424 if (ret > 0) {
1425 pkt.data = bit_buffer;
1426 pkt.size = ret;
1427 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1428 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1429 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1430 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1431 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1432
1433 if (enc->coded_frame->key_frame)
1434 pkt.flags |= AV_PKT_FLAG_KEY;
1435 write_frame(s, &pkt, ost);
1436 *frame_size = ret;
1437 video_size += ret;
1438 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1439 // enc->frame_number-1, ret, enc->pict_type);
1440 /* if two pass, output log */
1441 if (ost->logfile && enc->stats_out) {
1442 fprintf(ost->logfile, "%s", enc->stats_out);
1443 }
1444 }
1445 }
1446 ost->sync_opts++;
1447 }
1448 }
1449
1450 static double psnr(double d)
1451 {
1452 return -10.0 * log(d) / log(10.0);
1453 }
1454
1455 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1456 int frame_size)
1457 {
1458 AVCodecContext *enc;
1459 int frame_number;
1460 double ti1, bitrate, avg_bitrate;
1461
1462 /* this is executed just the first time do_video_stats is called */
1463 if (!vstats_file) {
1464 vstats_file = fopen(vstats_filename, "w");
1465 if (!vstats_file) {
1466 perror("fopen");
1467 exit_program(1);
1468 }
1469 }
1470
1471 enc = ost->st->codec;
1472 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1473 frame_number = ost->frame_number;
1474 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1475 if (enc->flags&CODEC_FLAG_PSNR)
1476 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1477
1478 fprintf(vstats_file,"f_size= %6d ", frame_size);
1479 /* compute pts value */
1480 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1481 if (ti1 < 0.01)
1482 ti1 = 0.01;
1483
1484 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1485 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1486 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1487 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1488 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1489 }
1490 }
1491
1492 static void print_report(OutputFile *output_files,
1493 OutputStream *ost_table, int nb_ostreams,
1494 int is_last_report, int64_t timer_start)
1495 {
1496 char buf[1024];
1497 OutputStream *ost;
1498 AVFormatContext *oc;
1499 int64_t total_size;
1500 AVCodecContext *enc;
1501 int frame_number, vid, i;
1502 double bitrate, ti1, pts;
1503 static int64_t last_time = -1;
1504 static int qp_histogram[52];
1505
1506 if (!print_stats && !is_last_report)
1507 return;
1508
1509 if (!is_last_report) {
1510 int64_t cur_time;
1511 /* display the report every 0.5 seconds */
1512 cur_time = av_gettime();
1513 if (last_time == -1) {
1514 last_time = cur_time;
1515 return;
1516 }
1517 if ((cur_time - last_time) < 500000)
1518 return;
1519 last_time = cur_time;
1520 }
1521
1522
1523 oc = output_files[0].ctx;
1524
1525 total_size = avio_size(oc->pb);
1526 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
1527 total_size = avio_tell(oc->pb);
1528
1529 buf[0] = '\0';
1530 ti1 = 1e10;
1531 vid = 0;
1532 for (i = 0; i < nb_ostreams; i++) {
1533 float q = -1;
1534 ost = &ost_table[i];
1535 enc = ost->st->codec;
1536 if (!ost->stream_copy && enc->coded_frame)
1537 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1538 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1539 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1540 }
1541 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1542 float t = (av_gettime() - timer_start) / 1000000.0;
1543
1544 frame_number = ost->frame_number;
1545 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1546 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1547 if (is_last_report)
1548 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1549 if (qp_hist) {
1550 int j;
1551 int qp = lrintf(q);
1552 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1553 qp_histogram[qp]++;
1554 for (j = 0; j < 32; j++)
1555 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1556 }
1557 if (enc->flags&CODEC_FLAG_PSNR) {
1558 int j;
1559 double error, error_sum = 0;
1560 double scale, scale_sum = 0;
1561 char type[3] = { 'Y','U','V' };
1562 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1563 for (j = 0; j < 3; j++) {
1564 if (is_last_report) {
1565 error = enc->error[j];
1566 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1567 } else {
1568 error = enc->coded_frame->error[j];
1569 scale = enc->width * enc->height * 255.0 * 255.0;
1570 }
1571 if (j)
1572 scale /= 4;
1573 error_sum += error;
1574 scale_sum += scale;
1575 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1576 }
1577 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1578 }
1579 vid = 1;
1580 }
1581 /* compute min output value */
1582 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1583 if ((pts < ti1) && (pts > 0))
1584 ti1 = pts;
1585 }
1586 if (ti1 < 0.01)
1587 ti1 = 0.01;
1588
1589 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1590
1591 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1592 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1593 (double)total_size / 1024, ti1, bitrate);
1594
1595 if (nb_frames_dup || nb_frames_drop)
1596 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1597 nb_frames_dup, nb_frames_drop);
1598
1599 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1600
1601 fflush(stderr);
1602
1603 if (is_last_report) {
1604 int64_t raw= audio_size + video_size + extra_size;
1605 av_log(NULL, AV_LOG_INFO, "\n");
1606 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1607 video_size / 1024.0,
1608 audio_size / 1024.0,
1609 extra_size / 1024.0,
1610 100.0 * (total_size - raw) / raw
1611 );
1612 }
1613 }
1614
1615 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1616 {
1617 int i, ret;
1618
1619 for (i = 0; i < nb_ostreams; i++) {
1620 OutputStream *ost = &ost_table[i];
1621 AVCodecContext *enc = ost->st->codec;
1622 AVFormatContext *os = output_files[ost->file_index].ctx;
1623
1624 if (!ost->encoding_needed)
1625 continue;
1626
1627 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1628 continue;
1629 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1630 continue;
1631
1632 for (;;) {
1633 AVPacket pkt;
1634 int fifo_bytes;
1635 av_init_packet(&pkt);
1636 pkt.stream_index = ost->index;
1637
1638 switch (ost->st->codec->codec_type) {
1639 case AVMEDIA_TYPE_AUDIO:
1640 fifo_bytes = av_fifo_size(ost->fifo);
1641 ret = 0;
1642 /* encode any samples remaining in fifo */
1643 if (fifo_bytes > 0) {
1644 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1645 int fs_tmp = enc->frame_size;
1646
1647 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1648 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1649 enc->frame_size = fifo_bytes / (osize * enc->channels);
1650 } else { /* pad */
1651 int frame_bytes = enc->frame_size*osize*enc->channels;
1652 if (allocated_audio_buf_size < frame_bytes)
1653 exit_program(1);
1654 generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1655 }
1656
1657 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1658 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1659 ost->st->time_base.num, enc->sample_rate);
1660 enc->frame_size = fs_tmp;
1661 }
1662 if (ret <= 0) {
1663 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1664 }
1665 if (ret < 0) {
1666 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1667 exit_program(1);
1668 }
1669 audio_size += ret;
1670 pkt.flags |= AV_PKT_FLAG_KEY;
1671 break;
1672 case AVMEDIA_TYPE_VIDEO:
1673 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1674 if (ret < 0) {
1675 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1676 exit_program(1);
1677 }
1678 video_size += ret;
1679 if (enc->coded_frame && enc->coded_frame->key_frame)
1680 pkt.flags |= AV_PKT_FLAG_KEY;
1681 if (ost->logfile && enc->stats_out) {
1682 fprintf(ost->logfile, "%s", enc->stats_out);
1683 }
1684 break;
1685 default:
1686 ret = -1;
1687 }
1688
1689 if (ret <= 0)
1690 break;
1691 pkt.data = bit_buffer;
1692 pkt.size = ret;
1693 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1694 pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1695 write_frame(os, &pkt, ost);
1696 }
1697 }
1698 }
1699
1700 /*
1701 * Check whether a packet from ist should be written into ost at this time
1702 */
1703 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1704 {
1705 OutputFile *of = &output_files[ost->file_index];
1706 int ist_index = ist - input_streams;
1707
1708 if (ost->source_index != ist_index)
1709 return 0;
1710
1711 if (of->start_time && ist->pts < of->start_time)
1712 return 0;
1713
1714 if (of->recording_time != INT64_MAX &&
1715 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1716 (AVRational){ 1, 1000000 }) >= 0) {
1717 ost->is_past_recording_time = 1;
1718 return 0;
1719 }
1720
1721 return 1;
1722 }
1723
1724 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1725 {
1726 OutputFile *of = &output_files[ost->file_index];
1727 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1728 AVPacket opkt;
1729
1730 av_init_packet(&opkt);
1731
1732 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1733 !ost->copy_initial_nonkeyframes)
1734 return;
1735
1736 /* force the input stream PTS */
1737 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1738 audio_size += pkt->size;
1739 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1740 video_size += pkt->size;
1741 ost->sync_opts++;
1742 }
1743
1744 opkt.stream_index = ost->index;
1745 if (pkt->pts != AV_NOPTS_VALUE)
1746 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1747 else
1748 opkt.pts = AV_NOPTS_VALUE;
1749
1750 if (pkt->dts == AV_NOPTS_VALUE)
1751 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1752 else
1753 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1754 opkt.dts -= ost_tb_start_time;
1755
1756 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1757 opkt.flags = pkt->flags;
1758
1759 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1760 if ( ost->st->codec->codec_id != CODEC_ID_H264
1761 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1762 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1763 ) {
1764 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1765 opkt.destruct = av_destruct_packet;
1766 } else {
1767 opkt.data = pkt->data;
1768 opkt.size = pkt->size;
1769 }
1770
1771 write_frame(of->ctx, &opkt, ost);
1772 ost->st->codec->frame_number++;
1773 av_free_packet(&opkt);
1774 }
1775
1776 static void rate_emu_sleep(InputStream *ist)
1777 {
1778 if (input_files[ist->file_index].rate_emu) {
1779 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1780 int64_t now = av_gettime() - ist->start;
1781 if (pts > now)
1782 usleep(pts - now);
1783 }
1784 }
1785
1786 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1787 {
1788 AVFrame *decoded_frame;
1789 AVCodecContext *avctx = ist->st->codec;
1790 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1791 int i, ret;
1792
1793 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1794 return AVERROR(ENOMEM);
1795 else
1796 avcodec_get_frame_defaults(ist->decoded_frame);
1797 decoded_frame = ist->decoded_frame;
1798
1799 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1800 if (ret < 0) {
1801 return ret;
1802 }
1803
1804 if (!*got_output) {
1805 /* no audio frame */
1806 return ret;
1807 }
1808
1809 /* if the decoder provides a pts, use it instead of the last packet pts.
1810 the decoder could be delaying output by a packet or more. */
1811 if (decoded_frame->pts != AV_NOPTS_VALUE)
1812 ist->next_pts = decoded_frame->pts;
1813
1814 /* increment next_pts to use for the case where the input stream does not
1815 have timestamps or there are multiple frames in the packet */
1816 ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1817 avctx->sample_rate;
1818
1819 // preprocess audio (volume)
1820 if (audio_volume != 256) {
1821 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1822 void *samples = decoded_frame->data[0];
1823 switch (avctx->sample_fmt) {
1824 case AV_SAMPLE_FMT_U8:
1825 {
1826 uint8_t *volp = samples;
1827 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1828 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1829 *volp++ = av_clip_uint8(v);
1830 }
1831 break;
1832 }
1833 case AV_SAMPLE_FMT_S16:
1834 {
1835 int16_t *volp = samples;
1836 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1837 int v = ((*volp) * audio_volume + 128) >> 8;
1838 *volp++ = av_clip_int16(v);
1839 }
1840 break;
1841 }
1842 case AV_SAMPLE_FMT_S32:
1843 {
1844 int32_t *volp = samples;
1845 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1846 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1847 *volp++ = av_clipl_int32(v);
1848 }
1849 break;
1850 }
1851 case AV_SAMPLE_FMT_FLT:
1852 {
1853 float *volp = samples;
1854 float scale = audio_volume / 256.f;
1855 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1856 *volp++ *= scale;
1857 }
1858 break;
1859 }
1860 case AV_SAMPLE_FMT_DBL:
1861 {
1862 double *volp = samples;
1863 double scale = audio_volume / 256.;
1864 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1865 *volp++ *= scale;
1866 }
1867 break;
1868 }
1869 default:
1870 av_log(NULL, AV_LOG_FATAL,
1871 "Audio volume adjustment on sample format %s is not supported.\n",
1872 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1873 exit_program(1);
1874 }
1875 }
1876
1877 rate_emu_sleep(ist);
1878
1879 for (i = 0; i < nb_output_streams; i++) {
1880 OutputStream *ost = &output_streams[i];
1881
1882 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1883 continue;
1884 do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1885 }
1886
1887 return ret;
1888 }
1889
1890 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1891 {
1892 AVFrame *decoded_frame, *filtered_frame = NULL;
1893 void *buffer_to_free = NULL;
1894 int i, ret = 0;
1895 float quality;
1896 #if CONFIG_AVFILTER
1897 int frame_available = 1;
1898 #endif
1899
1900 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1901 return AVERROR(ENOMEM);
1902 else
1903 avcodec_get_frame_defaults(ist->decoded_frame);
1904 decoded_frame = ist->decoded_frame;
1905 pkt->pts = *pkt_pts;
1906 pkt->dts = ist->pts;
1907 *pkt_pts = AV_NOPTS_VALUE;
1908
1909 ret = avcodec_decode_video2(ist->st->codec,
1910 decoded_frame, got_output, pkt);
1911 if (ret < 0)
1912 return ret;
1913
1914 quality = same_quant ? decoded_frame->quality : 0;
1915 if (!*got_output) {
1916 /* no picture yet */
1917 return ret;
1918 }
1919 ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1920 decoded_frame->pkt_dts);
1921 if (pkt->duration)
1922 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1923 else if (ist->st->codec->time_base.num != 0) {
1924 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1925 ist->st->codec->ticks_per_frame;
1926 ist->next_pts += ((int64_t)AV_TIME_BASE *
1927 ist->st->codec->time_base.num * ticks) /
1928 ist->st->codec->time_base.den;
1929 }
1930 pkt->size = 0;
1931 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1932
1933 rate_emu_sleep(ist);
1934
1935 for (i = 0; i < nb_output_streams; i++) {
1936 OutputStream *ost = &output_streams[i];
1937 int frame_size, resample_changed;
1938
1939 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1940 continue;
1941
1942 #if CONFIG_AVFILTER
1943 resample_changed = ost->resample_width != decoded_frame->width ||
1944 ost->resample_height != decoded_frame->height ||
1945 ost->resample_pix_fmt != decoded_frame->format;
1946 if (resample_changed) {
1947 av_log(NULL, AV_LOG_INFO,
1948 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1949 ist->file_index, ist->st->index,
1950 ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1951 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1952
1953 avfilter_graph_free(&ost->graph);
1954 if (configure_video_filters(ist, ost)) {
1955 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1956 exit_program(1);
1957 }
1958
1959 ost->resample_width = decoded_frame->width;
1960 ost->resample_height = decoded_frame->height;
1961 ost->resample_pix_fmt = decoded_frame->format;
1962 }
1963
1964 if (ist->st->sample_aspect_ratio.num)
1965 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1966 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1967 FrameBuffer *buf = decoded_frame->opaque;
1968 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1969 decoded_frame->data, decoded_frame->linesize,
1970 AV_PERM_READ | AV_PERM_PRESERVE,
1971 ist->st->codec->width, ist->st->codec->height,
1972 ist->st->codec->pix_fmt);
1973
1974 avfilter_copy_frame_props(fb, decoded_frame);
1975 fb->pts = ist->pts;
1976 fb->buf->priv = buf;
1977 fb->buf->free = filter_release_buffer;
1978
1979 buf->refcount++;
1980 av_buffersrc_buffer(ost->input_video_filter, fb);
1981 } else
1982 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
1983 ist->pts, decoded_frame->sample_aspect_ratio);
1984
1985 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1986 av_free(buffer_to_free);
1987 return AVERROR(ENOMEM);
1988 } else
1989 avcodec_get_frame_defaults(ist->filtered_frame);
1990 filtered_frame = ist->filtered_frame;
1991
1992 frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1993 while (frame_available) {
1994 AVRational ist_pts_tb;
1995 if (ost->output_video_filter)
1996 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1997 if (ost->picref)
1998 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1999 if (ost->picref->video && !ost->frame_aspect_ratio)
2000 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
2001 #else
2002 filtered_frame = decoded_frame;
2003 #endif
2004
2005 do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2006 same_quant ? quality : ost->st->codec->global_quality);
2007 if (vstats_filename && frame_size)
2008 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2009 #if CONFIG_AVFILTER
2010 frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2011 if (ost->picref)
2012 avfilter_unref_buffer(ost->picref);
2013 }
2014 #endif
2015 }
2016
2017 av_free(buffer_to_free);
2018 return ret;
2019 }
2020
2021 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2022 {
2023 AVSubtitle subtitle;
2024 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2025 &subtitle, got_output, pkt);
2026 if (ret < 0)
2027 return ret;
2028 if (!*got_output)
2029 return ret;
2030
2031 rate_emu_sleep(ist);
2032
2033 for (i = 0; i < nb_output_streams; i++) {
2034 OutputStream *ost = &output_streams[i];
2035
2036 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2037 continue;
2038
2039 do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2040 }
2041
2042 avsubtitle_free(&subtitle);
2043 return ret;
2044 }
2045
2046 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2047 static int output_packet(InputStream *ist,
2048 OutputStream *ost_table, int nb_ostreams,
2049 const AVPacket *pkt)
2050 {
2051 int i;
2052 int got_output;
2053 int64_t pkt_pts = AV_NOPTS_VALUE;
2054 AVPacket avpkt;
2055
2056 if (ist->next_pts == AV_NOPTS_VALUE)
2057 ist->next_pts = ist->pts;
2058
2059 if (pkt == NULL) {
2060 /* EOF handling */
2061 av_init_packet(&avpkt);
2062 avpkt.data = NULL;
2063 avpkt.size = 0;
2064 goto handle_eof;
2065 } else {
2066 avpkt = *pkt;
2067 }
2068
2069 if (pkt->dts != AV_NOPTS_VALUE)
2070 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2071 if (pkt->pts != AV_NOPTS_VALUE)
2072 pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2073
2074 // while we have more to decode or while the decoder did output something on EOF
2075 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2076 int ret = 0;
2077 handle_eof:
2078
2079 ist->pts = ist->next_pts;
2080
2081 if (avpkt.size && avpkt.size != pkt->size) {
2082 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2083 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2084 ist->showed_multi_packet_warning = 1;
2085 }
2086
2087 switch (ist->st->codec->codec_type) {
2088 case AVMEDIA_TYPE_AUDIO:
2089 ret = transcode_audio (ist, &avpkt, &got_output);
2090 break;
2091 case AVMEDIA_TYPE_VIDEO:
2092 ret = transcode_video (ist, &avpkt, &got_output, &pkt_pts);
2093 break;
2094 case AVMEDIA_TYPE_SUBTITLE:
2095 ret = transcode_subtitles(ist, &avpkt, &got_output);
2096 break;
2097 default:
2098 return -1;
2099 }
2100
2101 if (ret < 0)
2102 return ret;
2103 // touch data and size only if not EOF
2104 if (pkt) {
2105 avpkt.data += ret;
2106 avpkt.size -= ret;
2107 }
2108 if (!got_output) {
2109 continue;
2110 }
2111 }
2112
2113 /* handle stream copy */
2114 if (!ist->decoding_needed) {
2115 rate_emu_sleep(ist);
2116 ist->pts = ist->next_pts;
2117 switch (ist->st->codec->codec_type) {
2118 case AVMEDIA_TYPE_AUDIO:
2119 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2120 ist->st->codec->sample_rate;
2121 break;
2122 case AVMEDIA_TYPE_VIDEO:
2123 if (ist->st->codec->time_base.num != 0) {
2124 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2125 ist->next_pts += ((int64_t)AV_TIME_BASE *
2126 ist->st->codec->time_base.num * ticks) /
2127 ist->st->codec->time_base.den;
2128 }
2129 break;
2130 }
2131 }
2132 for (i = 0; pkt && i < nb_ostreams; i++) {
2133 OutputStream *ost = &ost_table[i];
2134
2135 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2136 continue;
2137
2138 do_streamcopy(ist, ost, pkt);
2139 }
2140
2141 return 0;
2142 }
2143
2144 static void print_sdp(OutputFile *output_files, int n)
2145 {
2146 char sdp[2048];
2147 int i;
2148 AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2149
2150 if (!avc)
2151 exit_program(1);
2152 for (i = 0; i < n; i++)
2153 avc[i] = output_files[i].ctx;
2154
2155 av_sdp_create(avc, n, sdp, sizeof(sdp));
2156 printf("SDP:\n%s\n", sdp);
2157 fflush(stdout);
2158 av_freep(&avc);
2159 }
2160
2161 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2162 char *error, int error_len)
2163 {
2164 int i;
2165 InputStream *ist = &input_streams[ist_index];
2166 if (ist->decoding_needed) {
2167 AVCodec *codec = ist->dec;
2168 if (!codec) {
2169 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2170 ist->st->codec->codec_id, ist->file_index, ist->st->index);
2171 return AVERROR(EINVAL);
2172 }
2173
2174 /* update requested sample format for the decoder based on the
2175 corresponding encoder sample format */
2176 for (i = 0; i < nb_output_streams; i++) {
2177 OutputStream *ost = &output_streams[i];
2178 if (ost->source_index == ist_index) {
2179 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2180 break;
2181 }
2182 }
2183
2184 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2185 ist->st->codec->get_buffer = codec_get_buffer;
2186 ist->st->codec->release_buffer = codec_release_buffer;
2187 ist->st->codec->opaque = ist;
2188 }
2189
2190 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2191 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2192 ist->file_index, ist->st->index);
2193 return AVERROR(EINVAL);
2194 }
2195 assert_codec_experimental(ist->st->codec, 0);
2196 assert_avoptions(ist->opts);
2197 }
2198
2199 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;
2200 ist->next_pts = AV_NOPTS_VALUE;
2201 init_pts_correction(&ist->pts_ctx);
2202 ist->is_start = 1;
2203
2204 return 0;
2205 }
2206
2207 static int transcode_init(OutputFile *output_files,
2208 int nb_output_files,
2209 InputFile *input_files,
2210 int nb_input_files)
2211 {
2212 int ret = 0, i, j, k;
2213 AVFormatContext *oc;
2214 AVCodecContext *codec, *icodec;
2215 OutputStream *ost;
2216 InputStream *ist;
2217 char error[1024];
2218 int want_sdp = 1;
2219
2220 /* init framerate emulation */
2221 for (i = 0; i < nb_input_files; i++) {
2222 InputFile *ifile = &input_files[i];
2223 if (ifile->rate_emu)
2224 for (j = 0; j < ifile->nb_streams; j++)
2225 input_streams[j + ifile->ist_index].start = av_gettime();
2226 }
2227
2228 /* output stream init */
2229 for (i = 0; i < nb_output_files; i++) {
2230 oc = output_files[i].ctx;
2231 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2232 av_dump_format(oc, i, oc->filename, 1);
2233 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2234 return AVERROR(EINVAL);
2235 }
2236 }
2237
2238 /* for each output stream, we compute the right encoding parameters */
2239 for (i = 0; i < nb_output_streams; i++) {
2240 ost = &output_streams[i];
2241 oc = output_files[ost->file_index].ctx;
2242 ist = &input_streams[ost->source_index];
2243
2244 if (ost->attachment_filename)
2245 continue;
2246
2247 codec = ost->st->codec;
2248 icodec = ist->st->codec;
2249
2250 ost->st->disposition = ist->st->disposition;
2251 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
2252 codec->chroma_sample_location = icodec->chroma_sample_location;
2253
2254 if (ost->stream_copy) {
2255 uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2256
2257 if (extra_size > INT_MAX) {
2258 return AVERROR(EINVAL);
2259 }
2260
2261 /* if stream_copy is selected, no need to decode or encode */
2262 codec->codec_id = icodec->codec_id;
2263 codec->codec_type = icodec->codec_type;
2264
2265 if (!codec->codec_tag) {
2266 if (!oc->oformat->codec_tag ||
2267 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2268 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2269 codec->codec_tag = icodec->codec_tag;
2270 }
2271
2272 codec->bit_rate = icodec->bit_rate;
2273 codec->rc_max_rate = icodec->rc_max_rate;
2274 codec->rc_buffer_size = icodec->rc_buffer_size;
2275 codec->field_order = icodec->field_order;
2276 codec->extradata = av_mallocz(extra_size);
2277 if (!codec->extradata) {
2278 return AVERROR(ENOMEM);
2279 }
2280 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2281 codec->extradata_size = icodec->extradata_size;
2282 if (!copy_tb) {
2283 codec->time_base = icodec->time_base;
2284 codec->time_base.num *= icodec->ticks_per_frame;
2285 av_reduce(&codec->time_base.num, &codec->time_base.den,
2286 codec->time_base.num, codec->time_base.den, INT_MAX);
2287 } else
2288 codec->time_base = ist->st->time_base;
2289
2290 switch (codec->codec_type) {
2291 case AVMEDIA_TYPE_AUDIO:
2292 if (audio_volume != 256) {
2293 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2294 exit_program(1);
2295 }
2296 codec->channel_layout = icodec->channel_layout;
2297 codec->sample_rate = icodec->sample_rate;
2298 codec->channels = icodec->channels;
2299 codec->frame_size = icodec->frame_size;
2300 codec->audio_service_type = icodec->audio_service_type;
2301 codec->block_align = icodec->block_align;
2302 break;
2303 case AVMEDIA_TYPE_VIDEO:
2304 codec->pix_fmt = icodec->pix_fmt;
2305 codec->width = icodec->width;
2306 codec->height = icodec->height;
2307 codec->has_b_frames = icodec->has_b_frames;
2308 if (!codec->sample_aspect_ratio.num) {
2309 codec->sample_aspect_ratio =
2310 ost->st->sample_aspect_ratio =
2311 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2312 ist->st->codec->sample_aspect_ratio.num ?
2313 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2314 }
2315 break;
2316 case AVMEDIA_TYPE_SUBTITLE:
2317 codec->width = icodec->width;
2318 codec->height = icodec->height;
2319 break;
2320 case AVMEDIA_TYPE_DATA:
2321 case AVMEDIA_TYPE_ATTACHMENT:
2322 break;
2323 default:
2324 abort();
2325 }
2326 } else {
2327 if (!ost->enc)
2328 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2329
2330 ist->decoding_needed = 1;
2331 ost->encoding_needed = 1;
2332
2333 switch (codec->codec_type) {
2334 case AVMEDIA_TYPE_AUDIO:
2335 ost->fifo = av_fifo_alloc(1024);
2336 if (!ost->fifo) {
2337 return AVERROR(ENOMEM);
2338 }
2339 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2340
2341 if (!codec->sample_rate)
2342 codec->sample_rate = icodec->sample_rate;
2343 choose_sample_rate(ost->st, ost->enc);
2344 codec->time_base = (AVRational){ 1, codec->sample_rate };
2345
2346 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2347 codec->sample_fmt = icodec->sample_fmt;
2348 choose_sample_fmt(ost->st, ost->enc);
2349
2350 if (!codec->channels)
2351 codec->channels = icodec->channels;
2352 codec->channel_layout = icodec->channel_layout;
2353 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2354 codec->channel_layout = 0;
2355
2356 ost->audio_resample = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2357 icodec->request_channels = codec-> channels;
2358 ost->resample_sample_fmt = icodec->sample_fmt;
2359 ost->resample_sample_rate = icodec->sample_rate;
2360 ost->resample_channels = icodec->channels;
2361 break;
2362 case AVMEDIA_TYPE_VIDEO:
2363 if (codec->pix_fmt == PIX_FMT_NONE)
2364 codec->pix_fmt = icodec->pix_fmt;
2365 choose_pixel_fmt(ost->st, ost->enc);
2366
2367 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2368 av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2369 exit_program(1);
2370 }
2371
2372 if (!codec->width || !codec->height) {
2373 codec->width = icodec->width;
2374 codec->height = icodec->height;
2375 }
2376
2377 ost->video_resample = codec->width != icodec->width ||
2378 codec->height != icodec->height ||
2379 codec->pix_fmt != icodec->pix_fmt;
2380 if (ost->video_resample) {
2381 #if !CONFIG_AVFILTER
2382 avcodec_get_frame_defaults(&ost->pict_tmp);
2383 if (avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2384 codec->width, codec->height)) {
2385 av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2386 exit_program(1);
2387 }
2388 ost->img_resample_ctx = sws_getContext(
2389 icodec->width,
2390 icodec->height,
2391 icodec->pix_fmt,
2392 codec->width,
2393 codec->height,
2394 codec->pix_fmt,
2395 ost->sws_flags, NULL, NULL, NULL);
2396 if (ost->img_resample_ctx == NULL) {
2397 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2398 exit_program(1);
2399 }
2400 #endif
2401 codec->bits_per_raw_sample = 0;
2402 }
2403
2404 ost->resample_height = icodec->height;
2405 ost->resample_width = icodec->width;
2406 ost->resample_pix_fmt = icodec->pix_fmt;
2407
2408 if (!ost->frame_rate.num)
2409 ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2410 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2411 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2412 ost->frame_rate = ost->enc->supported_framerates[idx];
2413 }
2414 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2415
2416 #if CONFIG_AVFILTER
2417 if (configure_video_filters(ist, ost)) {
2418 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2419 exit(1);
2420 }
2421 #endif
2422 break;
2423 case AVMEDIA_TYPE_SUBTITLE:
2424 break;
2425 default:
2426 abort();
2427 break;
2428 }
2429 /* two pass mode */
2430 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2431 char logfilename[1024];
2432 FILE *f;
2433
2434 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2435 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2436 i);
2437 if (codec->flags & CODEC_FLAG_PASS1) {
2438 f = fopen(logfilename, "wb");
2439 if (!f) {
2440 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2441 logfilename, strerror(errno));
2442 exit_program(1);
2443 }
2444 ost->logfile = f;
2445 } else {
2446 char *logbuffer;
2447 size_t logbuffer_size;
2448 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2449 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2450 logfilename);
2451 exit_program(1);
2452 }
2453 codec->stats_in = logbuffer;
2454 }
2455 }
2456 }
2457 if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2458 int size = codec->width * codec->height;
2459 bit_buffer_size = FFMAX(bit_buffer_size, 6 * size + 200);
2460 }
2461 }
2462
2463 if (!bit_buffer)
2464 bit_buffer = av_malloc(bit_buffer_size);
2465 if (!bit_buffer) {
2466 av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2467 bit_buffer_size);
2468 return AVERROR(ENOMEM);
2469 }
2470
2471 /* open each encoder */
2472 for (i = 0; i < nb_output_streams; i++) {
2473 ost = &output_streams[i];
2474 if (ost->encoding_needed) {
2475 AVCodec *codec = ost->enc;
2476 AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2477 if (!codec) {
2478 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2479 ost->st->codec->codec_id, ost->file_index, ost->index);
2480 ret = AVERROR(EINVAL);
2481 goto dump_format;
2482 }
2483 if (dec->subtitle_header) {
2484 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2485 if (!ost->st->codec->subtitle_header) {
2486 ret = AVERROR(ENOMEM);
2487 goto dump_format;
2488 }
2489 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2490 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2491 }
2492 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2493 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2494 ost->file_index, ost->index);
2495 ret = AVERROR(EINVAL);
2496 goto dump_format;
2497 }
2498 assert_codec_experimental(ost->st->codec, 1);
2499 assert_avoptions(ost->opts);
2500 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2501 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2502 "It takes bits/s as argument, not kbits/s\n");
2503 extra_size += ost->st->codec->extradata_size;
2504
2505 if (ost->st->codec->me_threshold)
2506 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2507 }
2508 }
2509
2510 /* init input streams */
2511 for (i = 0; i < nb_input_streams; i++)
2512 if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2513 goto dump_format;
2514
2515 /* discard unused programs */
2516 for (i = 0; i < nb_input_files; i++) {
2517 InputFile *ifile = &input_files[i];
2518 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2519 AVProgram *p = ifile->ctx->programs[j];
2520 int discard = AVDISCARD_ALL;
2521
2522 for (k = 0; k < p->nb_stream_indexes; k++)
2523 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2524 discard = AVDISCARD_DEFAULT;
2525 break;
2526 }
2527 p->discard = discard;
2528 }
2529 }
2530
2531 /* open files and write file headers */
2532 for (i = 0; i < nb_output_files; i++) {
2533 oc = output_files[i].ctx;
2534 oc->interrupt_callback = int_cb;
2535 if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2536 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2537 ret = AVERROR(EINVAL);
2538 goto dump_format;
2539 }
2540 assert_avoptions(output_files[i].opts);
2541 if (strcmp(oc->oformat->name, "rtp")) {
2542 want_sdp = 0;
2543 }
2544 }
2545
2546 dump_format:
2547 /* dump the file output parameters - cannot be done before in case
2548 of stream copy */
2549 for (i = 0; i < nb_output_files; i++) {
2550 av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2551 }
2552
2553 /* dump the stream mapping */
2554 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2555 for (i = 0; i < nb_output_streams; i++) {
2556 ost = &output_streams[i];
2557
2558 if (ost->attachment_filename) {
2559 /* an attached file */
2560 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2561 ost->attachment_filename, ost->file_index, ost->index);
2562 continue;
2563 }
2564 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2565 input_streams[ost->source_index].file_index,
2566 input_streams[ost->source_index].st->index,
2567 ost->file_index,
2568 ost->index);
2569 if (ost->sync_ist != &input_streams[ost->source_index])
2570 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2571 ost->sync_ist->file_index,
2572 ost->sync_ist->st->index);
2573 if (ost->stream_copy)
2574 av_log(NULL, AV_LOG_INFO, " (copy)");
2575 else
2576 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2577 input_streams[ost->source_index].dec->name : "?",
2578 ost->enc ? ost->enc->name : "?");
2579 av_log(NULL, AV_LOG_INFO, "\n");
2580 }
2581
2582 if (ret) {
2583 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2584 return ret;
2585 }
2586
2587 if (want_sdp) {
2588 print_sdp(output_files, nb_output_files);
2589 }
2590
2591 return 0;
2592 }
2593
2594 /*
2595 * The following code is the main loop of the file converter
2596 */
2597 static int transcode(OutputFile *output_files,
2598 int nb_output_files,
2599 InputFile *input_files,
2600 int nb_input_files)
2601 {
2602 int ret, i;
2603 AVFormatContext *is, *os;
2604 OutputStream *ost;
2605 InputStream *ist;
2606 uint8_t *no_packet;
2607 int no_packet_count = 0;
2608 int64_t timer_start;
2609
2610 if (!(no_packet = av_mallocz(nb_input_files)))
2611 exit_program(1);
2612
2613 ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2614 if (ret < 0)
2615 goto fail;
2616
2617 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2618 term_init();
2619
2620 timer_start = av_gettime();
2621
2622 for (; received_sigterm == 0;) {
2623 int file_index, ist_index;
2624 AVPacket pkt;
2625 int64_t ipts_min;
2626 double opts_min;
2627
2628 ipts_min = INT64_MAX;
2629 opts_min = 1e100;
2630
2631 /* select the stream that we must read now by looking at the
2632 smallest output pts */
2633 file_index = -1;
2634 for (i = 0; i < nb_output_streams; i++) {
2635 OutputFile *of;
2636 int64_t ipts;
2637 double opts;
2638 ost = &output_streams[i];
2639 of = &output_files[ost->file_index];
2640 os = output_files[ost->file_index].ctx;
2641 ist = &input_streams[ost->source_index];
2642 if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2643 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2644 continue;
2645 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2646 ipts = ist->pts;
2647 if (!input_files[ist->file_index].eof_reached) {
2648 if (ipts < ipts_min) {
2649 ipts_min = ipts;
2650 if (input_sync)
2651 file_index = ist->file_index;
2652 }
2653 if (opts < opts_min) {
2654 opts_min = opts;
2655 if (!input_sync) file_index = ist->file_index;
2656 }
2657 }
2658 if (ost->frame_number >= ost->max_frames) {
2659 int j;
2660 for (j = 0; j < of->ctx->nb_streams; j++)
2661 output_streams[of->ost_index + j].is_past_recording_time = 1;
2662 continue;
2663 }
2664 }
2665 /* if none, if is finished */
2666 if (file_index < 0) {
2667 if (no_packet_count) {
2668 no_packet_count = 0;
2669 memset(no_packet, 0, nb_input_files);
2670 usleep(10000);
2671 continue;
2672 }
2673 break;
2674 }
2675
2676 /* read a frame from it and output it in the fifo */
2677 is = input_files[file_index].ctx;
2678 ret = av_read_frame(is, &pkt);
2679 if (ret == AVERROR(EAGAIN)) {
2680 no_packet[file_index] = 1;
2681 no_packet_count++;
2682 continue;
2683 }
2684 if (ret < 0) {
2685 input_files[file_index].eof_reached = 1;
2686 if (opt_shortest)
2687 break;
2688 else
2689 continue;
2690 }
2691
2692 no_packet_count = 0;
2693 memset(no_packet, 0, nb_input_files);
2694
2695 if (do_pkt_dump) {
2696 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2697 is->streams[pkt.stream_index]);
2698 }
2699 /* the following test is needed in case new streams appear
2700 dynamically in stream : we ignore them */
2701 if (pkt.stream_index >= input_files[file_index].nb_streams)
2702 goto discard_packet;
2703 ist_index = input_files[file_index].ist_index + pkt.stream_index;
2704 ist = &input_streams[ist_index];
2705 if (ist->discard)
2706 goto discard_packet;
2707
2708 if (pkt.dts != AV_NOPTS_VALUE)
2709 pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2710 if (pkt.pts != AV_NOPTS_VALUE)
2711 pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2712
2713 if (pkt.pts != AV_NOPTS_VALUE)
2714 pkt.pts *= ist->ts_scale;
2715 if (pkt.dts != AV_NOPTS_VALUE)
2716 pkt.dts *= ist->ts_scale;
2717
2718 //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
2719 // ist->next_pts,
2720 // pkt.dts, input_files[ist->file_index].ts_offset,
2721 // ist->st->codec->codec_type);
2722 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2723 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2724 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2725 int64_t delta = pkt_dts - ist->next_pts;
2726 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->pts) && !copy_ts) {
2727 input_files[ist->file_index].ts_offset -= delta;
2728 av_log(NULL, AV_LOG_DEBUG,
2729 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2730 delta, input_files[ist->file_index].ts_offset);
2731 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2732 if (pkt.pts != AV_NOPTS_VALUE)
2733 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2734 }
2735 }
2736
2737 // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2738 if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2739
2740 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2741 ist->file_index, ist->st->index);
2742 if (exit_on_error)
2743 exit_program(1);
2744 av_free_packet(&pkt);
2745 continue;
2746 }
2747
2748 discard_packet:
2749 av_free_packet(&pkt);
2750
2751 /* dump report by using the output first video and audio streams */
2752 print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2753 }
2754
2755 /* at the end of stream, we must flush the decoder buffers */
2756 for (i = 0; i < nb_input_streams; i++) {
2757 ist = &input_streams[i];
2758 if (ist->decoding_needed) {
2759 output_packet(ist, output_streams, nb_output_streams, NULL);
2760 }
2761 }
2762 flush_encoders(output_streams, nb_output_streams);
2763
2764 term_exit();
2765
2766 /* write the trailer if needed and close file */
2767 for (i = 0; i < nb_output_files; i++) {
2768 os = output_files[i].ctx;
2769 av_write_trailer(os);
2770 }
2771
2772 /* dump report by using the first video and audio streams */
2773 print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2774
2775 /* close each encoder */
2776 for (i = 0; i < nb_output_streams; i++) {
2777 ost = &output_streams[i];
2778 if (ost->encoding_needed) {
2779 av_freep(&ost->st->codec->stats_in);
2780 avcodec_close(ost->st->codec);
2781 }
2782 #if CONFIG_AVFILTER
2783 avfilter_graph_free(&ost->graph);
2784 #endif
2785 }
2786
2787 /* close each decoder */
2788 for (i = 0; i < nb_input_streams; i++) {
2789 ist = &input_streams[i];
2790 if (ist->decoding_needed) {
2791 avcodec_close(ist->st->codec);
2792 }
2793 }
2794
2795 /* finished ! */
2796 ret = 0;
2797
2798 fail:
2799 av_freep(&bit_buffer);
2800 av_freep(&no_packet);
2801
2802 if (output_streams) {
2803 for (i = 0; i < nb_output_streams; i++) {
2804 ost = &output_streams[i];
2805 if (ost) {
2806 if (ost->stream_copy)
2807 av_freep(&ost->st->codec->extradata);
2808 if (ost->logfile) {
2809 fclose(ost->logfile);
2810 ost->logfile = NULL;
2811 }
2812 av_fifo_free(ost->fifo); /* works even if fifo is not
2813 initialized but set to zero */
2814 av_freep(&ost->st->codec->subtitle_header);
2815 av_free(ost->pict_tmp.data[0]);
2816 av_free(ost->forced_kf_pts);
2817 if (ost->video_resample)
2818 sws_freeContext(ost->img_resample_ctx);
2819 if (ost->resample)
2820 audio_resample_close(ost->resample);
2821 if (ost->reformat_ctx)
2822 av_audio_convert_free(ost->reformat_ctx);
2823 av_dict_free(&ost->opts);
2824 }
2825 }
2826 }
2827 return ret;
2828 }
2829
2830 static double parse_frame_aspect_ratio(const char *arg)
2831 {
2832 int x = 0, y = 0;
2833 double ar = 0;
2834 const char *p;
2835 char *end;
2836
2837 p = strchr(arg, ':');
2838 if (p) {
2839 x = strtol(arg, &end, 10);
2840 if (end == p)
2841 y = strtol(end + 1, &end, 10);
2842 if (x > 0 && y > 0)
2843 ar = (double)x / (double)y;
2844 } else
2845 ar = strtod(arg, NULL);
2846
2847 if (!ar) {
2848 av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2849 exit_program(1);
2850 }
2851 return ar;
2852 }
2853
2854 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2855 {
2856 return parse_option(o, "codec:a", arg, options);
2857 }
2858
2859 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2860 {
2861 return parse_option(o, "codec:v", arg, options);
2862 }
2863
2864 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2865 {
2866 return parse_option(o, "codec:s", arg, options);
2867 }
2868
2869 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2870 {
2871 return parse_option(o, "codec:d", arg, options);
2872 }
2873
2874 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2875 {
2876 StreamMap *m = NULL;
2877 int i, negative = 0, file_idx;
2878 int sync_file_idx = -1, sync_stream_idx;
2879 char *p, *sync;
2880 char *map;
2881
2882 if (*arg == '-') {
2883 negative = 1;
2884 arg++;
2885 }
2886 map = av_strdup(arg);
2887
2888 /* parse sync stream first, just pick first matching stream */
2889 if (sync = strchr(map, ',')) {
2890 *sync = 0;
2891 sync_file_idx = strtol(sync + 1, &sync, 0);
2892 if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2893 av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2894 exit_program(1);
2895 }
2896 if (*sync)
2897 sync++;
2898 for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2899 if (check_stream_specifier(input_files[sync_file_idx].ctx,
2900 input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2901 sync_stream_idx = i;
2902 break;
2903 }
2904 if (i == input_files[sync_file_idx].nb_streams) {
2905 av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2906 "match any streams.\n", arg);
2907 exit_program(1);
2908 }
2909 }
2910
2911
2912 file_idx = strtol(map, &p, 0);
2913 if (file_idx >= nb_input_files || file_idx < 0) {
2914 av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2915 exit_program(1);
2916 }
2917 if (negative)
2918 /* disable some already defined maps */
2919 for (i = 0; i < o->nb_stream_maps; i++) {
2920 m = &o->stream_maps[i];
2921 if (file_idx == m->file_index &&
2922 check_stream_specifier(input_files[m->file_index].ctx,
2923 input_files[m->file_index].ctx->streams[m->stream_index],
2924 *p == ':' ? p + 1 : p) > 0)
2925 m->disabled = 1;
2926 }
2927 else
2928 for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2929 if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2930 *p == ':' ? p + 1 : p) <= 0)
2931 continue;
2932 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2933 &o->nb_stream_maps, o->nb_stream_maps + 1);
2934 m = &o->stream_maps[o->nb_stream_maps - 1];
2935
2936 m->file_index = file_idx;
2937 m->stream_index = i;
2938
2939 if (sync_file_idx >= 0) {
2940 m->sync_file_index = sync_file_idx;
2941 m->sync_stream_index = sync_stream_idx;
2942 } else {
2943 m->sync_file_index = file_idx;
2944 m->sync_stream_index = i;
2945 }
2946 }
2947
2948 if (!m) {
2949 av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2950 exit_program(1);
2951 }
2952
2953 av_freep(&map);
2954 return 0;
2955 }
2956
2957 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2958 {
2959 o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2960 &o->nb_attachments, o->nb_attachments + 1);
2961 o->attachments[o->nb_attachments - 1] = arg;
2962 return 0;
2963 }
2964
2965 /**
2966 * Parse a metadata specifier in arg.
2967 * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2968 * @param index for type c/p, chapter/program index is written here
2969 * @param stream_spec for type s, the stream specifier is written here
2970 */
2971 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2972 {
2973 if (*arg) {
2974 *type = *arg;
2975 switch (*arg) {
2976 case 'g':
2977 break;
2978 case 's':
2979 if (*(++arg) && *arg != ':') {
2980 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2981 exit_program(1);
2982 }
2983 *stream_spec = *arg == ':' ? arg + 1 : "";
2984 break;
2985 case 'c':
2986 case 'p':
2987 if (*(++arg) == ':')
2988 *index = strtol(++arg, NULL, 0);
2989 break;
2990 default:
2991 av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2992 exit_program(1);
2993 }
2994 } else
2995 *type = 'g';
2996 }
2997
2998 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2999 {
3000 AVDictionary **meta_in = NULL;
3001 AVDictionary **meta_out;
3002 int i, ret = 0;
3003 char type_in, type_out;
3004 const char *istream_spec = NULL, *ostream_spec = NULL;
3005 int idx_in = 0, idx_out = 0;
3006
3007 parse_meta_type(inspec, &type_in, &idx_in, &istream_spec);
3008 parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3009
3010 if (type_in == 'g' || type_out == 'g')
3011 o->metadata_global_manual = 1;
3012 if (type_in == 's' || type_out == 's')
3013 o->metadata_streams_manual = 1;
3014 if (type_in == 'c' || type_out == 'c')
3015 o->metadata_chapters_manual = 1;
3016
3017 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3018 if ((index) < 0 || (index) >= (nb_elems)) {\
3019 av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3020 (desc), (index));\
3021 exit_program(1);\
3022 }
3023
3024 #define SET_DICT(type, meta, context, index)\
3025 switch (type) {\
3026 case 'g':\
3027 meta = &context->metadata;\
3028 break;\
3029 case 'c':\
3030 METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3031 meta = &context->chapters[index]->metadata;\
3032 break;\
3033 case 'p':\
3034 METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3035 meta = &context->programs[index]->metadata;\
3036 break;\
3037 }\
3038
3039 SET_DICT(type_in, meta_in, ic, idx_in);
3040 SET_DICT(type_out, meta_out, oc, idx_out);
3041
3042 /* for input streams choose first matching stream */
3043 if (type_in == 's') {
3044 for (i = 0; i < ic->nb_streams; i++) {
3045 if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3046 meta_in = &ic->streams[i]->metadata;
3047 break;
3048 } else if (ret < 0)
3049 exit_program(1);
3050 }
3051 if (!meta_in) {
3052 av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
3053 exit_program(1);
3054 }
3055 }
3056
3057 if (type_out == 's') {
3058 for (i = 0; i < oc->nb_streams; i++) {
3059 if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3060 meta_out = &oc->streams[i]->metadata;
3061 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3062 } else if (ret < 0)
3063 exit_program(1);
3064 }
3065 } else
3066 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3067
3068 return 0;
3069 }
3070
3071 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3072 {
3073 const char *codec_string = encoder ? "encoder" : "decoder";
3074 AVCodec *codec;
3075
3076 codec = encoder ?
3077 avcodec_find_encoder_by_name(name) :
3078 avcodec_find_decoder_by_name(name);
3079 if (!codec) {
3080 av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3081 exit_program(1);
3082 }
3083 if (codec->type != type) {
3084 av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3085 exit_program(1);
3086 }
3087 return codec;
3088 }
3089
3090 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3091 {
3092 char *codec_name = NULL;
3093
3094 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3095 if (codec_name) {
3096 AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3097 st->codec->codec_id = codec->id;
3098 return codec;
3099 } else
3100 return avcodec_find_decoder(st->codec->codec_id);
3101 }
3102
3103 /**
3104 * Add all the streams from the given input file to the global
3105 * list of input streams.
3106 */
3107 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3108 {
3109 int i;
3110
3111 for (i = 0; i < ic->nb_streams; i++) {
3112 AVStream *st = ic->streams[i];
3113 AVCodecContext *dec = st->codec;
3114 InputStream *ist;
3115
3116 input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3117 ist = &input_streams[nb_input_streams - 1];
3118 ist->st = st;
3119 ist->file_index = nb_input_files;
3120 ist->discard = 1;
3121 ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3122
3123 ist->ts_scale = 1.0;
3124 MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3125
3126 ist->dec = choose_decoder(o, ic, st);
3127
3128 switch (dec->codec_type) {
3129 case AVMEDIA_TYPE_AUDIO:
3130 if (o->audio_disable)
3131 st->discard = AVDISCARD_ALL;
3132 break;
3133 case AVMEDIA_TYPE_VIDEO:
3134 if (dec->lowres) {
3135 dec->flags |= CODEC_FLAG_EMU_EDGE;
3136 dec->height >>= dec->lowres;
3137 dec->width >>= dec->lowres;
3138 }
3139
3140 if (o->video_disable)
3141 st->discard = AVDISCARD_ALL;
3142 else if (video_discard)
3143 st->discard = video_discard;
3144 break;
3145 case AVMEDIA_TYPE_DATA:
3146 break;
3147 case AVMEDIA_TYPE_SUBTITLE:
3148 if (o->subtitle_disable)
3149 st->discard = AVDISCARD_ALL;
3150 break;
3151 case AVMEDIA_TYPE_ATTACHMENT:
3152 case AVMEDIA_TYPE_UNKNOWN:
3153 break;
3154 default:
3155 abort();
3156 }
3157 }
3158 }
3159
3160 static void assert_file_overwrite(const char *filename)
3161 {
3162 if (!file_overwrite &&
3163 (strchr(filename, ':') == NULL || filename[1] == ':' ||
3164 av_strstart(filename, "file:", NULL))) {
3165 if (avio_check(filename, 0) == 0) {
3166 if (!using_stdin) {
3167 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3168 fflush(stderr);
3169 if (!read_yesno()) {
3170 fprintf(stderr, "Not overwriting - exiting\n");
3171 exit_program(1);
3172 }
3173 }
3174 else {
3175 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3176 exit_program(1);
3177 }
3178 }
3179 }
3180 }
3181
3182 static void dump_attachment(AVStream *st, const char *filename)
3183 {
3184 int ret;
3185 AVIOContext *out = NULL;
3186 AVDictionaryEntry *e;
3187
3188 if (!st->codec->extradata_size) {
3189 av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3190 nb_input_files - 1, st->index);
3191 return;
3192 }
3193 if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3194 filename = e->value;
3195 if (!*filename) {
3196 av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3197 "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3198 exit_program(1);
3199 }
3200
3201 assert_file_overwrite(filename);
3202
3203 if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3204 av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3205 filename);
3206 exit_program(1);
3207 }
3208
3209 avio_write(out, st->codec->extradata, st->codec->extradata_size);
3210 avio_flush(out);
3211 avio_close(out);
3212 }
3213
3214 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3215 {
3216 AVFormatContext *ic;
3217 AVInputFormat *file_iformat = NULL;
3218 int err, i, ret;
3219 int64_t timestamp;
3220 uint8_t buf[128];
3221 AVDictionary **opts;
3222 int orig_nb_streams; // number of streams before avformat_find_stream_info
3223
3224 if (o->format) {
3225 if (!(file_iformat = av_find_input_format(o->format))) {
3226 av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3227 exit_program(1);
3228 }
3229 }
3230
3231 if (!strcmp(filename, "-"))
3232 filename = "pipe:";
3233
3234 using_stdin |= !strncmp(filename, "pipe:", 5) ||
3235 !strcmp(filename, "/dev/stdin");
3236
3237 /* get default parameters from command line */
3238 ic = avformat_alloc_context();
3239 if (!ic) {
3240 print_error(filename, AVERROR(ENOMEM));
3241 exit_program(1);
3242 }
3243 if (o->nb_audio_sample_rate) {
3244 snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3245 av_dict_set(&format_opts, "sample_rate", buf, 0);
3246 }
3247 if (o->nb_audio_channels) {
3248 snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3249 av_dict_set(&format_opts, "channels", buf, 0);
3250 }
3251 if (o->nb_frame_rates) {
3252 av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3253 }
3254 if (o->nb_frame_sizes) {
3255 av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3256 }
3257 if (o->nb_frame_pix_fmts)
3258 av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3259
3260 ic->flags |= AVFMT_FLAG_NONBLOCK;
3261 ic->interrupt_callback = int_cb;
3262
3263 /* open the input file with generic libav function */
3264 err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3265 if (err < 0) {
3266 print_error(filename, err);
3267 exit_program(1);
3268 }
3269 assert_avoptions(format_opts);
3270
3271 /* apply forced codec ids */
3272 for (i = 0; i < ic->nb_streams; i++)
3273 choose_decoder(o, ic, ic->streams[i]);
3274
3275 /* Set AVCodecContext options for avformat_find_stream_info */
3276 opts = setup_find_stream_info_opts(ic, codec_opts);
3277 orig_nb_streams = ic->nb_streams;
3278
3279 /* If not enough info to get the stream parameters, we decode the
3280 first frames to get it. (used in mpeg case for example) */
3281 ret = avformat_find_stream_info(ic, opts);
3282 if (ret < 0) {
3283 av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3284 avformat_close_input(&ic);
3285 exit_program(1);
3286 }
3287
3288 timestamp = o->start_time;
3289 /* add the stream start time */
3290 if (ic->start_time != AV_NOPTS_VALUE)
3291 timestamp += ic->start_time;
3292
3293 /* if seeking requested, we execute it */
3294 if (o->start_time != 0) {
3295 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3296 if (ret < 0) {
3297 av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3298 filename, (double)timestamp / AV_TIME_BASE);
3299 }
3300 }
3301
3302 /* update the current parameters so that they match the one of the input stream */
3303 add_input_streams(o, ic);
3304
3305 /* dump the file content */
3306 av_dump_format(ic, nb_input_files, filename, 0);
3307
3308 input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3309 input_files[nb_input_files - 1].ctx = ic;
3310 input_files[nb_input_files - 1].ist_index = nb_input_streams - ic->nb_streams;
3311 input_files[nb_input_files - 1].ts_offset = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3312 input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3313 input_files[nb_input_files - 1].rate_emu = o->rate_emu;
3314
3315 for (i = 0; i < o->nb_dump_attachment; i++) {
3316 int j;
3317
3318 for (j = 0; j < ic->nb_streams; j++) {
3319 AVStream *st = ic->streams[j];
3320
3321 if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3322 dump_attachment(st, o->dump_attachment[i].u.str);
3323 }
3324 }
3325
3326 for (i = 0; i < orig_nb_streams; i++)
3327 av_dict_free(&opts[i]);
3328 av_freep(&opts);
3329
3330 reset_options(o);
3331 return 0;
3332 }
3333
3334 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3335 AVCodecContext *avctx)
3336 {
3337 char *p;
3338 int n = 1, i;
3339 int64_t t;
3340
3341 for (p = kf; *p; p++)
3342 if (*p == ',')
3343 n++;
3344 ost->forced_kf_count = n;
3345 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3346 if (!ost->forced_kf_pts) {
3347 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3348 exit_program(1);
3349 }
3350 for (i = 0; i < n; i++) {
3351 p = i ? strchr(p, ',') + 1 : kf;
3352 t = parse_time_or_die("force_key_frames", p, 1);
3353 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3354 }
3355 }
3356
3357 static uint8_t *get_line(AVIOContext *s)
3358 {
3359 AVIOContext *line;
3360 uint8_t *buf;
3361 char c;
3362
3363 if (avio_open_dyn_buf(&line) < 0) {
3364 av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3365 exit_program(1);
3366 }
3367
3368 while ((c = avio_r8(s)) && c != '\n')
3369 avio_w8(line, c);
3370 avio_w8(line, 0);
3371 avio_close_dyn_buf(line, &buf);
3372
3373 return buf;
3374 }
3375
3376 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3377 {
3378 int i, ret = 1;
3379 char filename[1000];
3380 const char *base[3] = { getenv("AVCONV_DATADIR"),
3381 getenv("HOME"),
3382 AVCONV_DATADIR,
3383 };
3384
3385 for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3386 if (!base[i])
3387 continue;
3388 if (codec_name) {
3389 snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3390 i != 1 ? "" : "/.avconv", codec_name, preset_name);
3391 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3392 }
3393 if (ret) {
3394 snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3395 i != 1 ? "" : "/.avconv", preset_name);
3396 ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3397 }
3398 }
3399 return ret;
3400 }
3401
3402 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3403 {
3404 char *codec_name = NULL;
3405
3406 MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3407 if (!codec_name) {
3408 ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3409 NULL, ost->st->codec->codec_type);
3410 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3411 } else if (!strcmp(codec_name, "copy"))
3412 ost->stream_copy = 1;
3413 else {
3414 ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3415 ost->st->codec->codec_id = ost->enc->id;
3416 }
3417 }
3418
3419 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3420 {
3421 OutputStream *ost;
3422 AVStream *st = avformat_new_stream(oc, NULL);
3423 int idx = oc->nb_streams - 1, ret = 0;
3424 char *bsf = NULL, *next, *codec_tag = NULL;
3425 AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3426 double qscale = -1;
3427 char *buf = NULL, *arg = NULL, *preset = NULL;
3428 AVIOContext *s = NULL;
3429
3430 if (!st) {
3431 av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3432 exit_program(1);
3433 }
3434
3435 if (oc->nb_streams - 1 < o->nb_streamid_map)
3436 st->id = o->streamid_map[oc->nb_streams - 1];
3437
3438 output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3439 nb_output_streams + 1);
3440 ost = &output_streams[nb_output_streams - 1];
3441 ost->file_index = nb_output_files;
3442 ost->index = idx;
3443 ost->st = st;
3444 st->codec->codec_type = type;
3445 choose_encoder(o, oc, ost);
3446 if (ost->enc) {
3447 ost->opts = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3448 }
3449
3450 avcodec_get_context_defaults3(st->codec, ost->enc);
3451 st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3452
3453 MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3454 if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3455 do {
3456 buf = get_line(s);
3457 if (!buf[0] || buf[0] == '#') {
3458 av_free(buf);
3459 continue;
3460 }
3461 if (!(arg = strchr(buf, '='))) {
3462 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3463 exit_program(1);
3464 }
3465 *arg++ = 0;
3466 av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3467 av_free(buf);
3468 } while (!s->eof_reached);
3469 avio_close(s);
3470 }
3471 if (ret) {
3472 av_log(NULL, AV_LOG_FATAL,
3473 "Preset %s specified for stream %d:%d, but could not be opened.\n",
3474 preset, ost->file_index, ost->index);
3475 exit_program(1);
3476 }
3477
3478 ost->max_frames = INT64_MAX;
3479 MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3480
3481 MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3482 while (bsf) {
3483 if (next = strchr(bsf, ','))
3484 *next++ = 0;
3485 if (!(bsfc = av_bitstream_filter_init(bsf))) {
3486 av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3487 exit_program(1);
3488 }
3489 if (bsfc_prev)
3490 bsfc_prev->next = bsfc;
3491 else
3492 ost->bitstream_filters = bsfc;
3493
3494 bsfc_prev = bsfc;
3495 bsf = next;
3496 }
3497
3498 MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3499 if (codec_tag) {
3500 uint32_t tag = strtol(codec_tag, &next, 0);
3501 if (*next)
3502 tag = AV_RL32(codec_tag);
3503 st->codec->codec_tag = tag;
3504 }
3505
3506 MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3507 if (qscale >= 0 || same_quant) {
3508 st->codec->flags |= CODEC_FLAG_QSCALE;
3509 st->codec->global_quality = FF_QP2LAMBDA * qscale;
3510 }
3511
3512 if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3513 st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3514
3515 av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3516 return ost;
3517 }
3518
3519 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3520 {
3521 int i;
3522 const char *p = str;
3523 for (i = 0;; i++) {
3524 dest[i] = atoi(p);
3525 if (i == 63)
3526 break;
3527 p = strchr(p, ',');
3528 if (!p) {
3529 av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3530 exit_program(1);
3531 }
3532 p++;
3533 }
3534 }
3535
3536 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3537 {
3538 AVStream *st;
3539 OutputStream *ost;
3540 AVCodecContext *video_enc;
3541
3542 ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3543 st = ost->st;
3544 video_enc = st->codec;
3545
3546 if (!ost->stream_copy) {
3547 const char *p = NULL;
3548 char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3549 char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3550 char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3551 int i;
3552
3553 MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3554 if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3555 av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3556 exit_program(1);
3557 }
3558
3559 MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3560 if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3561 av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3562 exit_program(1);
3563 }
3564
3565 MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3566 if (frame_aspect_ratio)
3567 ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3568
3569 MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3570 if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3571 av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3572 exit_program(1);
3573 }
3574 st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3575
3576 MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3577 if (intra_matrix) {
3578 if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3579 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3580 exit_program(1);
3581 }
3582 parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3583 }
3584 MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3585 if (inter_matrix) {
3586 if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3587 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3588 exit_program(1);
3589 }
3590 parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3591 }
3592
3593 MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3594 for (i = 0; p; i++) {
3595 int start, end, q;
3596 int e = sscanf(p, "%d,%d,%d", &start, &end, &q);
3597 if (e != 3) {
3598 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3599 exit_program(1);
3600 }
3601 video_enc->rc_override =
3602 av_realloc(video_enc->rc_override,
3603 sizeof(RcOverride) * (i + 1));
3604 video_enc->rc_override[i].start_frame = start;
3605 video_enc->rc_override[i].end_frame = end;
3606 if (q > 0) {
3607 video_enc->rc_override[i].qscale = q;
3608 video_enc->rc_override[i].quality_factor = 1.0;
3609 }
3610 else {
3611 video_enc->rc_override[i].qscale = 0;
3612 video_enc->rc_override[i].quality_factor = -q/100.0;
3613 }
3614 p = strchr(p, '/');
3615 if (p) p++;
3616 }
3617 video_enc->rc_override_count = i;
3618 if (!video_enc->rc_initial_buffer_occupancy)
3619 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size * 3 / 4;
3620 video_enc->intra_dc_precision = intra_dc_precision - 8;
3621
3622 /* two pass mode */
3623 if (do_pass) {
3624 if (do_pass == 1) {
3625 video_enc->flags |= CODEC_FLAG_PASS1;
3626 } else {
3627 video_enc->flags |= CODEC_FLAG_PASS2;
3628 }
3629 }
3630
3631 MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3632 if (forced_key_frames)
3633 parse_forced_key_frames(forced_key_frames, ost, video_enc);
3634
3635 MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3636
3637 ost->top_field_first = -1;
3638 MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3639
3640 #if CONFIG_AVFILTER
3641 MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3642 if (filters)
3643 ost->avfilter = av_strdup(filters);
3644 #endif
3645 } else {
3646 MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3647 }
3648
3649 return ost;
3650 }
3651
3652 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3653 {
3654 AVStream *st;
3655 OutputStream *ost;
3656 AVCodecContext *audio_enc;
3657
3658 ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3659 st = ost->st;
3660
3661 audio_enc = st->codec;
3662 audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3663
3664 if (!ost->stream_copy) {
3665 char *sample_fmt = NULL;
3666
3667 MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3668
3669 MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3670 if (sample_fmt &&
3671 (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3672 av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3673 exit_program(1);
3674 }
3675
3676 MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3677 }
3678
3679 return ost;
3680 }
3681
3682 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)