mpegvideo: remove abort() in ff_find_unused_picture()
[ffmpeg.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 "libavformat/os_support.h"
48
49 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      ///< file index
94     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     ///< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static int video_discard = 0;
101 static int same_quant = 0;
102 static int do_deinterlace = 0;
103 static int intra_dc_precision = 8;
104 static int qp_hist = 0;
105
106 static int file_overwrite = 0;
107 static int do_benchmark = 0;
108 static int do_hex_dump = 0;
109 static int do_pkt_dump = 0;
110 static int do_pass = 0;
111 static char *pass_logfilename_prefix = NULL;
112 static int video_sync_method= -1;
113 static int audio_sync_method= 0;
114 static float audio_drift_threshold= 0.1;
115 static int copy_ts= 0;
116 static int copy_tb = 1;
117 static int opt_shortest = 0;
118 static char *vstats_filename;
119 static FILE *vstats_file;
120
121 static int audio_volume = 256;
122
123 static int exit_on_error = 0;
124 static int using_stdin = 0;
125 static int64_t video_size = 0;
126 static int64_t audio_size = 0;
127 static int64_t extra_size = 0;
128 static int nb_frames_dup = 0;
129 static int nb_frames_drop = 0;
130 static int input_sync;
131
132 static float dts_delta_threshold = 10;
133
134 static int print_stats = 1;
135
136 static uint8_t *audio_buf;
137 static uint8_t *audio_out;
138 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
139
140 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
141
142 typedef struct InputStream {
143     int file_index;
144     AVStream *st;
145     int discard;             /* true if stream data should be discarded */
146     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
147     AVCodec *dec;
148     AVFrame *decoded_frame;
149     AVFrame *filtered_frame;
150
151     int64_t       start;     /* time when read started */
152     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
153                                 is not defined */
154     int64_t       pts;       /* current pts */
155     PtsCorrectionContext pts_ctx;
156     double ts_scale;
157     int is_start;            /* is 1 at the start and after a discontinuity */
158     int showed_multi_packet_warning;
159     AVDictionary *opts;
160 } InputStream;
161
162 typedef struct InputFile {
163     AVFormatContext *ctx;
164     int eof_reached;      /* true if eof reached */
165     int ist_index;        /* index of first stream in ist_table */
166     int buffer_size;      /* current total buffer size */
167     int64_t ts_offset;
168     int nb_streams;       /* number of stream that avconv is aware of; may be different
169                              from ctx.nb_streams if new streams appear during av_read_frame() */
170     int rate_emu;
171 } InputFile;
172
173 typedef struct OutputStream {
174     int file_index;          /* file index */
175     int index;               /* stream index in the output file */
176     int source_index;        /* InputStream index */
177     AVStream *st;            /* stream in the output file */
178     int encoding_needed;     /* true if encoding needed for this stream */
179     int frame_number;
180     /* input pts and corresponding output pts
181        for A/V sync */
182     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
183     struct InputStream *sync_ist; /* input stream to sync against */
184     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
185     AVBitStreamFilterContext *bitstream_filters;
186     AVCodec *enc;
187     int64_t max_frames;
188
189     /* video only */
190     int video_resample;
191     AVFrame pict_tmp;      /* temporary image for resampling */
192     struct SwsContext *img_resample_ctx; /* for image resampling */
193     int resample_height;
194     int resample_width;
195     int resample_pix_fmt;
196     AVRational frame_rate;
197     int force_fps;
198     int top_field_first;
199
200     float frame_aspect_ratio;
201
202     /* forced key frames */
203     int64_t *forced_kf_pts;
204     int forced_kf_count;
205     int forced_kf_index;
206
207     /* audio only */
208     int audio_resample;
209     ReSampleContext *resample; /* for audio resampling */
210     int resample_sample_fmt;
211     int resample_channels;
212     int resample_sample_rate;
213     int reformat_pair;
214     AVAudioConvert *reformat_ctx;
215     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
216     FILE *logfile;
217
218 #if CONFIG_AVFILTER
219     AVFilterContext *output_video_filter;
220     AVFilterContext *input_video_filter;
221     AVFilterBufferRef *picref;
222     char *avfilter;
223     AVFilterGraph *graph;
224 #endif
225
226     int64_t sws_flags;
227     AVDictionary *opts;
228     int is_past_recording_time;
229     int stream_copy;
230     const char *attachment_filename;
231     int copy_initial_nonkeyframes;
232 } OutputStream;
233
234
235 typedef struct OutputFile {
236     AVFormatContext *ctx;
237     AVDictionary *opts;
238     int ost_index;       /* index of the first stream in output_streams */
239     int64_t recording_time; /* desired length of the resulting file in microseconds */
240     int64_t start_time;     /* start time in microseconds */
241     uint64_t limit_filesize;
242 } OutputFile;
243
244 static InputStream *input_streams = NULL;
245 static int         nb_input_streams = 0;
246 static InputFile   *input_files   = NULL;
247 static int         nb_input_files   = 0;
248
249 static OutputStream *output_streams = NULL;
250 static int        nb_output_streams = 0;
251 static OutputFile   *output_files   = NULL;
252 static int        nb_output_files   = 0;
253
254 typedef struct OptionsContext {
255     /* input/output options */
256     int64_t start_time;
257     const char *format;
258
259     SpecifierOpt *codec_names;
260     int        nb_codec_names;
261     SpecifierOpt *audio_channels;
262     int        nb_audio_channels;
263     SpecifierOpt *audio_sample_rate;
264     int        nb_audio_sample_rate;
265     SpecifierOpt *frame_rates;
266     int        nb_frame_rates;
267     SpecifierOpt *frame_sizes;
268     int        nb_frame_sizes;
269     SpecifierOpt *frame_pix_fmts;
270     int        nb_frame_pix_fmts;
271
272     /* input options */
273     int64_t input_ts_offset;
274     int rate_emu;
275
276     SpecifierOpt *ts_scale;
277     int        nb_ts_scale;
278     SpecifierOpt *dump_attachment;
279     int        nb_dump_attachment;
280
281     /* output options */
282     StreamMap *stream_maps;
283     int     nb_stream_maps;
284     /* first item specifies output metadata, second is input */
285     MetadataMap (*meta_data_maps)[2];
286     int nb_meta_data_maps;
287     int metadata_global_manual;
288     int metadata_streams_manual;
289     int metadata_chapters_manual;
290     const char **attachments;
291     int       nb_attachments;
292
293     int chapters_input_file;
294
295     int64_t recording_time;
296     uint64_t limit_filesize;
297     float mux_preload;
298     float mux_max_delay;
299
300     int video_disable;
301     int audio_disable;
302     int subtitle_disable;
303     int data_disable;
304
305     /* indexed by output file stream index */
306     int   *streamid_map;
307     int nb_streamid_map;
308
309     SpecifierOpt *metadata;
310     int        nb_metadata;
311     SpecifierOpt *max_frames;
312     int        nb_max_frames;
313     SpecifierOpt *bitstream_filters;
314     int        nb_bitstream_filters;
315     SpecifierOpt *codec_tags;
316     int        nb_codec_tags;
317     SpecifierOpt *sample_fmts;
318     int        nb_sample_fmts;
319     SpecifierOpt *qscale;
320     int        nb_qscale;
321     SpecifierOpt *forced_key_frames;
322     int        nb_forced_key_frames;
323     SpecifierOpt *force_fps;
324     int        nb_force_fps;
325     SpecifierOpt *frame_aspect_ratios;
326     int        nb_frame_aspect_ratios;
327     SpecifierOpt *rc_overrides;
328     int        nb_rc_overrides;
329     SpecifierOpt *intra_matrices;
330     int        nb_intra_matrices;
331     SpecifierOpt *inter_matrices;
332     int        nb_inter_matrices;
333     SpecifierOpt *top_field_first;
334     int        nb_top_field_first;
335     SpecifierOpt *presets;
336     int        nb_presets;
337     SpecifierOpt *copy_initial_nonkeyframes;
338     int        nb_copy_initial_nonkeyframes;
339 #if CONFIG_AVFILTER
340     SpecifierOpt *filters;
341     int        nb_filters;
342 #endif
343 } OptionsContext;
344
345 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
346 {\
347     int i, ret;\
348     for (i = 0; i < o->nb_ ## name; i++) {\
349         char *spec = o->name[i].specifier;\
350         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
351             outvar = o->name[i].u.type;\
352         else if (ret < 0)\
353             exit_program(1);\
354     }\
355 }
356
357 static void reset_options(OptionsContext *o)
358 {
359     const OptionDef *po = options;
360
361     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
362     while (po->name) {
363         void *dst = (uint8_t*)o + po->u.off;
364
365         if (po->flags & OPT_SPEC) {
366             SpecifierOpt **so = dst;
367             int i, *count = (int*)(so + 1);
368             for (i = 0; i < *count; i++) {
369                 av_freep(&(*so)[i].specifier);
370                 if (po->flags & OPT_STRING)
371                     av_freep(&(*so)[i].u.str);
372             }
373             av_freep(so);
374             *count = 0;
375         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
376             av_freep(dst);
377         po++;
378     }
379
380     av_freep(&o->stream_maps);
381     av_freep(&o->meta_data_maps);
382     av_freep(&o->streamid_map);
383
384     memset(o, 0, sizeof(*o));
385
386     o->mux_max_delay  = 0.7;
387     o->recording_time = INT64_MAX;
388     o->limit_filesize = UINT64_MAX;
389     o->chapters_input_file = INT_MAX;
390
391     uninit_opts();
392     init_opts();
393 }
394
395 #if CONFIG_AVFILTER
396
397 static int configure_video_filters(InputStream *ist, OutputStream *ost)
398 {
399     AVFilterContext *last_filter, *filter;
400     /** filter graph containing all filters including input & output */
401     AVCodecContext *codec = ost->st->codec;
402     AVCodecContext *icodec = ist->st->codec;
403     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
404     AVRational sample_aspect_ratio;
405     char args[255];
406     int ret;
407
408     ost->graph = avfilter_graph_alloc();
409
410     if (ist->st->sample_aspect_ratio.num){
411         sample_aspect_ratio = ist->st->sample_aspect_ratio;
412     }else
413         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
414
415     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
416              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
417              sample_aspect_ratio.num, sample_aspect_ratio.den);
418
419     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
420                                        "src", args, NULL, ost->graph);
421     if (ret < 0)
422         return ret;
423     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
424                                        "out", NULL, &ffsink_ctx, ost->graph);
425     if (ret < 0)
426         return ret;
427     last_filter = ost->input_video_filter;
428
429     if (codec->width  != icodec->width || codec->height != icodec->height) {
430         snprintf(args, 255, "%d:%d:flags=0x%X",
431                  codec->width,
432                  codec->height,
433                  (unsigned)ost->sws_flags);
434         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
435                                                 NULL, args, NULL, ost->graph)) < 0)
436             return ret;
437         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
438             return ret;
439         last_filter = filter;
440     }
441
442     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
443     ost->graph->scale_sws_opts = av_strdup(args);
444
445     if (ost->avfilter) {
446         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
447         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
448
449         outputs->name    = av_strdup("in");
450         outputs->filter_ctx = last_filter;
451         outputs->pad_idx = 0;
452         outputs->next    = NULL;
453
454         inputs->name    = av_strdup("out");
455         inputs->filter_ctx = ost->output_video_filter;
456         inputs->pad_idx = 0;
457         inputs->next    = NULL;
458
459         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
460             return ret;
461         av_freep(&ost->avfilter);
462     } else {
463         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
464             return ret;
465     }
466
467     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
468         return ret;
469
470     codec->width  = ost->output_video_filter->inputs[0]->w;
471     codec->height = ost->output_video_filter->inputs[0]->h;
472     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
473         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
474         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
475         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
476
477     return 0;
478 }
479 #endif /* CONFIG_AVFILTER */
480
481 static void term_exit(void)
482 {
483     av_log(NULL, AV_LOG_QUIET, "");
484 }
485
486 static volatile int received_sigterm = 0;
487 static volatile int received_nb_signals = 0;
488
489 static void
490 sigterm_handler(int sig)
491 {
492     received_sigterm = sig;
493     received_nb_signals++;
494     term_exit();
495 }
496
497 static void term_init(void)
498 {
499     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
500     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
501 #ifdef SIGXCPU
502     signal(SIGXCPU, sigterm_handler);
503 #endif
504 }
505
506 static int decode_interrupt_cb(void *ctx)
507 {
508     return received_nb_signals > 1;
509 }
510
511 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
512
513 void exit_program(int ret)
514 {
515     int i;
516
517     /* close files */
518     for(i=0;i<nb_output_files;i++) {
519         AVFormatContext *s = output_files[i].ctx;
520         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
521             avio_close(s->pb);
522         avformat_free_context(s);
523         av_dict_free(&output_files[i].opts);
524     }
525     for(i=0;i<nb_input_files;i++) {
526         avformat_close_input(&input_files[i].ctx);
527     }
528     for (i = 0; i < nb_input_streams; i++) {
529         av_freep(&input_streams[i].decoded_frame);
530         av_freep(&input_streams[i].filtered_frame);
531         av_dict_free(&input_streams[i].opts);
532     }
533
534     if (vstats_file)
535         fclose(vstats_file);
536     av_free(vstats_filename);
537
538     av_freep(&input_streams);
539     av_freep(&input_files);
540     av_freep(&output_streams);
541     av_freep(&output_files);
542
543     uninit_opts();
544     av_free(audio_buf);
545     av_free(audio_out);
546     allocated_audio_buf_size= allocated_audio_out_size= 0;
547
548 #if CONFIG_AVFILTER
549     avfilter_uninit();
550 #endif
551     avformat_network_deinit();
552
553     if (received_sigterm) {
554         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
555                (int) received_sigterm);
556         exit (255);
557     }
558
559     exit(ret);
560 }
561
562 static void assert_avoptions(AVDictionary *m)
563 {
564     AVDictionaryEntry *t;
565     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
566         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
567         exit_program(1);
568     }
569 }
570
571 static void assert_codec_experimental(AVCodecContext *c, int encoder)
572 {
573     const char *codec_string = encoder ? "encoder" : "decoder";
574     AVCodec *codec;
575     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
576         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
577         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
578                 "results.\nAdd '-strict experimental' if you want to use it.\n",
579                 codec_string, c->codec->name);
580         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
581         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
582             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
583                    codec_string, codec->name);
584         exit_program(1);
585     }
586 }
587
588 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
589 {
590     if(codec && codec->sample_fmts){
591         const enum AVSampleFormat *p= codec->sample_fmts;
592         for(; *p!=-1; p++){
593             if(*p == st->codec->sample_fmt)
594                 break;
595         }
596         if (*p == -1) {
597             av_log(NULL, AV_LOG_WARNING,
598                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
599                    av_get_sample_fmt_name(st->codec->sample_fmt),
600                    codec->name,
601                    av_get_sample_fmt_name(codec->sample_fmts[0]));
602             st->codec->sample_fmt = codec->sample_fmts[0];
603         }
604     }
605 }
606
607 /**
608  * Update the requested input sample format based on the output sample format.
609  * This is currently only used to request float output from decoders which
610  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
611  * Ideally this will be removed in the future when decoders do not do format
612  * conversion and only output in their native format.
613  */
614 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
615                               AVCodecContext *enc)
616 {
617     /* if sample formats match or a decoder sample format has already been
618        requested, just return */
619     if (enc->sample_fmt == dec->sample_fmt ||
620         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
621         return;
622
623     /* if decoder supports more than one output format */
624     if (dec_codec && dec_codec->sample_fmts &&
625         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
626         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
627         const enum AVSampleFormat *p;
628         int min_dec = -1, min_inc = -1;
629
630         /* find a matching sample format in the encoder */
631         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
632             if (*p == enc->sample_fmt) {
633                 dec->request_sample_fmt = *p;
634                 return;
635             } else if (*p > enc->sample_fmt) {
636                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
637             } else
638                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
639         }
640
641         /* if none match, provide the one that matches quality closest */
642         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
643                                   enc->sample_fmt - min_dec;
644     }
645 }
646
647 static void choose_sample_rate(AVStream *st, AVCodec *codec)
648 {
649     if(codec && codec->supported_samplerates){
650         const int *p= codec->supported_samplerates;
651         int best=0;
652         int best_dist=INT_MAX;
653         for(; *p; p++){
654             int dist= abs(st->codec->sample_rate - *p);
655             if(dist < best_dist){
656                 best_dist= dist;
657                 best= *p;
658             }
659         }
660         if(best_dist){
661             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
662         }
663         st->codec->sample_rate= best;
664     }
665 }
666
667 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
668 {
669     if(codec && codec->pix_fmts){
670         const enum PixelFormat *p= codec->pix_fmts;
671         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
672             if(st->codec->codec_id==CODEC_ID_MJPEG){
673                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
674             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
675                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
676             }
677         }
678         for (; *p != PIX_FMT_NONE; p++) {
679             if(*p == st->codec->pix_fmt)
680                 break;
681         }
682         if (*p == PIX_FMT_NONE) {
683             if(st->codec->pix_fmt != PIX_FMT_NONE)
684                 av_log(NULL, AV_LOG_WARNING,
685                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
686                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
687                         codec->name,
688                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
689             st->codec->pix_fmt = codec->pix_fmts[0];
690         }
691     }
692 }
693
694 static double
695 get_sync_ipts(const OutputStream *ost)
696 {
697     const InputStream *ist = ost->sync_ist;
698     OutputFile *of = &output_files[ost->file_index];
699     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
700 }
701
702 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
703     int ret;
704
705     while(bsfc){
706         AVPacket new_pkt= *pkt;
707         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
708                                           &new_pkt.data, &new_pkt.size,
709                                           pkt->data, pkt->size,
710                                           pkt->flags & AV_PKT_FLAG_KEY);
711         if(a>0){
712             av_free_packet(pkt);
713             new_pkt.destruct= av_destruct_packet;
714         } else if(a<0){
715             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
716                    bsfc->filter->name, pkt->stream_index,
717                    avctx->codec ? avctx->codec->name : "copy");
718             print_error("", a);
719             if (exit_on_error)
720                 exit_program(1);
721         }
722         *pkt= new_pkt;
723
724         bsfc= bsfc->next;
725     }
726
727     ret= av_interleaved_write_frame(s, pkt);
728     if(ret < 0){
729         print_error("av_interleaved_write_frame()", ret);
730         exit_program(1);
731     }
732 }
733
734 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
735 {
736     int fill_char = 0x00;
737     if (sample_fmt == AV_SAMPLE_FMT_U8)
738         fill_char = 0x80;
739     memset(buf, fill_char, size);
740 }
741
742 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
743                          InputStream *ist, AVFrame *decoded_frame)
744 {
745     uint8_t *buftmp;
746     int64_t audio_out_size, audio_buf_size;
747
748     int size_out, frame_bytes, ret, resample_changed;
749     AVCodecContext *enc= ost->st->codec;
750     AVCodecContext *dec= ist->st->codec;
751     int osize = av_get_bytes_per_sample(enc->sample_fmt);
752     int isize = av_get_bytes_per_sample(dec->sample_fmt);
753     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
754     uint8_t *buf = decoded_frame->data[0];
755     int size     = decoded_frame->nb_samples * dec->channels * isize;
756     int64_t allocated_for_size = size;
757
758 need_realloc:
759     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
760     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
761     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
762     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
763     audio_buf_size*= osize*enc->channels;
764
765     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
766     if(coded_bps > 8*osize)
767         audio_out_size= audio_out_size * coded_bps / (8*osize);
768     audio_out_size += FF_MIN_BUFFER_SIZE;
769
770     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
771         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
772         exit_program(1);
773     }
774
775     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
776     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
777     if (!audio_buf || !audio_out){
778         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
779         exit_program(1);
780     }
781
782     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
783         ost->audio_resample = 1;
784
785     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
786                        ost->resample_channels    != dec->channels   ||
787                        ost->resample_sample_rate != dec->sample_rate;
788
789     if ((ost->audio_resample && !ost->resample) || resample_changed) {
790         if (resample_changed) {
791             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",
792                    ist->file_index, ist->st->index,
793                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
794                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
795             ost->resample_sample_fmt  = dec->sample_fmt;
796             ost->resample_channels    = dec->channels;
797             ost->resample_sample_rate = dec->sample_rate;
798             if (ost->resample)
799                 audio_resample_close(ost->resample);
800         }
801         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
802         if (audio_sync_method <= 1 &&
803             ost->resample_sample_fmt  == enc->sample_fmt &&
804             ost->resample_channels    == enc->channels   &&
805             ost->resample_sample_rate == enc->sample_rate) {
806             ost->resample = NULL;
807             ost->audio_resample = 0;
808         } else if (ost->audio_resample) {
809             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
810                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
811             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
812                                                    enc->sample_rate, dec->sample_rate,
813                                                    enc->sample_fmt,  dec->sample_fmt,
814                                                    16, 10, 0, 0.8);
815             if (!ost->resample) {
816                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
817                        dec->channels, dec->sample_rate,
818                        enc->channels, enc->sample_rate);
819                 exit_program(1);
820             }
821         }
822     }
823
824 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
825     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
826         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
827         if (ost->reformat_ctx)
828             av_audio_convert_free(ost->reformat_ctx);
829         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
830                                                    dec->sample_fmt, 1, NULL, 0);
831         if (!ost->reformat_ctx) {
832             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
833                    av_get_sample_fmt_name(dec->sample_fmt),
834                    av_get_sample_fmt_name(enc->sample_fmt));
835             exit_program(1);
836         }
837         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
838     }
839
840     if(audio_sync_method){
841         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
842                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
843         int idelta = delta * dec->sample_rate / enc->sample_rate;
844         int byte_delta = idelta * isize * dec->channels;
845
846         //FIXME resample delay
847         if(fabs(delta) > 50){
848             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
849                 if(byte_delta < 0){
850                     byte_delta= FFMAX(byte_delta, -size);
851                     size += byte_delta;
852                     buf  -= byte_delta;
853                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
854                            -byte_delta / (isize * dec->channels));
855                     if(!size)
856                         return;
857                     ist->is_start=0;
858                 }else{
859                     static uint8_t *input_tmp= NULL;
860                     input_tmp= av_realloc(input_tmp, byte_delta + size);
861
862                     if(byte_delta > allocated_for_size - size){
863                         allocated_for_size= byte_delta + (int64_t)size;
864                         goto need_realloc;
865                     }
866                     ist->is_start=0;
867
868                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
869                     memcpy(input_tmp + byte_delta, buf, size);
870                     buf= input_tmp;
871                     size += byte_delta;
872                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
873                 }
874             }else if(audio_sync_method>1){
875                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
876                 av_assert0(ost->audio_resample);
877                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
878                        delta, comp, enc->sample_rate);
879 //                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));
880                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
881             }
882         }
883     }else
884         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
885                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
886
887     if (ost->audio_resample) {
888         buftmp = audio_buf;
889         size_out = audio_resample(ost->resample,
890                                   (short *)buftmp, (short *)buf,
891                                   size / (dec->channels * isize));
892         size_out = size_out * enc->channels * osize;
893     } else {
894         buftmp = buf;
895         size_out = size;
896     }
897
898     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
899         const void *ibuf[6]= {buftmp};
900         void *obuf[6]= {audio_buf};
901         int istride[6]= {isize};
902         int ostride[6]= {osize};
903         int len= size_out/istride[0];
904         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
905             printf("av_audio_convert() failed\n");
906             if (exit_on_error)
907                 exit_program(1);
908             return;
909         }
910         buftmp = audio_buf;
911         size_out = len*osize;
912     }
913
914     /* now encode as many frames as possible */
915     if (enc->frame_size > 1) {
916         /* output resampled raw samples */
917         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
918             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
919             exit_program(1);
920         }
921         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
922
923         frame_bytes = enc->frame_size * osize * enc->channels;
924
925         while (av_fifo_size(ost->fifo) >= frame_bytes) {
926             AVPacket pkt;
927             av_init_packet(&pkt);
928
929             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
930
931             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
932
933             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
934                                        (short *)audio_buf);
935             if (ret < 0) {
936                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
937                 exit_program(1);
938             }
939             audio_size += ret;
940             pkt.stream_index= ost->index;
941             pkt.data= audio_out;
942             pkt.size= ret;
943             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
944                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
945             pkt.flags |= AV_PKT_FLAG_KEY;
946             write_frame(s, &pkt, enc, ost->bitstream_filters);
947
948             ost->sync_opts += enc->frame_size;
949         }
950     } else {
951         AVPacket pkt;
952         av_init_packet(&pkt);
953
954         ost->sync_opts += size_out / (osize * enc->channels);
955
956         /* output a pcm frame */
957         /* determine the size of the coded buffer */
958         size_out /= osize;
959         if (coded_bps)
960             size_out = size_out*coded_bps/8;
961
962         if(size_out > audio_out_size){
963             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
964             exit_program(1);
965         }
966
967         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
968         ret = avcodec_encode_audio(enc, audio_out, size_out,
969                                    (short *)buftmp);
970         if (ret < 0) {
971             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
972             exit_program(1);
973         }
974         audio_size += ret;
975         pkt.stream_index= ost->index;
976         pkt.data= audio_out;
977         pkt.size= ret;
978         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
979             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
980         pkt.flags |= AV_PKT_FLAG_KEY;
981         write_frame(s, &pkt, enc, ost->bitstream_filters);
982     }
983 }
984
985 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
986 {
987     AVCodecContext *dec;
988     AVPicture *picture2;
989     AVPicture picture_tmp;
990     uint8_t *buf = 0;
991
992     dec = ist->st->codec;
993
994     /* deinterlace : must be done before any resize */
995     if (do_deinterlace) {
996         int size;
997
998         /* create temporary picture */
999         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1000         buf = av_malloc(size);
1001         if (!buf)
1002             return;
1003
1004         picture2 = &picture_tmp;
1005         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1006
1007         if(avpicture_deinterlace(picture2, picture,
1008                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1009             /* if error, do not deinterlace */
1010             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1011             av_free(buf);
1012             buf = NULL;
1013             picture2 = picture;
1014         }
1015     } else {
1016         picture2 = picture;
1017     }
1018
1019     if (picture != picture2)
1020         *picture = *picture2;
1021     *bufp = buf;
1022 }
1023
1024 static void do_subtitle_out(AVFormatContext *s,
1025                             OutputStream *ost,
1026                             InputStream *ist,
1027                             AVSubtitle *sub,
1028                             int64_t pts)
1029 {
1030     static uint8_t *subtitle_out = NULL;
1031     int subtitle_out_max_size = 1024 * 1024;
1032     int subtitle_out_size, nb, i;
1033     AVCodecContext *enc;
1034     AVPacket pkt;
1035
1036     if (pts == AV_NOPTS_VALUE) {
1037         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1038         if (exit_on_error)
1039             exit_program(1);
1040         return;
1041     }
1042
1043     enc = ost->st->codec;
1044
1045     if (!subtitle_out) {
1046         subtitle_out = av_malloc(subtitle_out_max_size);
1047     }
1048
1049     /* Note: DVB subtitle need one packet to draw them and one other
1050        packet to clear them */
1051     /* XXX: signal it in the codec context ? */
1052     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1053         nb = 2;
1054     else
1055         nb = 1;
1056
1057     for(i = 0; i < nb; i++) {
1058         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1059         // start_display_time is required to be 0
1060         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1061         sub->end_display_time -= sub->start_display_time;
1062         sub->start_display_time = 0;
1063         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1064                                                     subtitle_out_max_size, sub);
1065         if (subtitle_out_size < 0) {
1066             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1067             exit_program(1);
1068         }
1069
1070         av_init_packet(&pkt);
1071         pkt.stream_index = ost->index;
1072         pkt.data = subtitle_out;
1073         pkt.size = subtitle_out_size;
1074         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1075         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1076             /* XXX: the pts correction is handled here. Maybe handling
1077                it in the codec would be better */
1078             if (i == 0)
1079                 pkt.pts += 90 * sub->start_display_time;
1080             else
1081                 pkt.pts += 90 * sub->end_display_time;
1082         }
1083         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1084     }
1085 }
1086
1087 static int bit_buffer_size= 1024*256;
1088 static uint8_t *bit_buffer= NULL;
1089
1090 static void do_video_resample(OutputStream *ost,
1091                               InputStream *ist,
1092                               AVFrame *in_picture,
1093                               AVFrame **out_picture)
1094 {
1095     int resample_changed = 0;
1096     AVCodecContext *dec = ist->st->codec;
1097     *out_picture = in_picture;
1098
1099     resample_changed = ost->resample_width   != dec->width  ||
1100                        ost->resample_height  != dec->height ||
1101                        ost->resample_pix_fmt != dec->pix_fmt;
1102
1103     if (resample_changed) {
1104         av_log(NULL, AV_LOG_INFO,
1105                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1106                ist->file_index, ist->st->index,
1107                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1108                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1109         if(!ost->video_resample)
1110             ost->video_resample = 1;
1111     }
1112
1113 #if !CONFIG_AVFILTER
1114     if (ost->video_resample) {
1115         *out_picture = &ost->pict_tmp;
1116         if (resample_changed) {
1117             /* initialize a new scaler context */
1118             sws_freeContext(ost->img_resample_ctx);
1119             ost->img_resample_ctx = sws_getContext(
1120                 ist->st->codec->width,
1121                 ist->st->codec->height,
1122                 ist->st->codec->pix_fmt,
1123                 ost->st->codec->width,
1124                 ost->st->codec->height,
1125                 ost->st->codec->pix_fmt,
1126                 ost->sws_flags, NULL, NULL, NULL);
1127             if (ost->img_resample_ctx == NULL) {
1128                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1129                 exit_program(1);
1130             }
1131         }
1132         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1133               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1134     }
1135 #else
1136     if (resample_changed) {
1137         avfilter_graph_free(&ost->graph);
1138         if (configure_video_filters(ist, ost)) {
1139             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1140             exit_program(1);
1141         }
1142     }
1143 #endif
1144     if (resample_changed) {
1145         ost->resample_width   = dec->width;
1146         ost->resample_height  = dec->height;
1147         ost->resample_pix_fmt = dec->pix_fmt;
1148     }
1149 }
1150
1151
1152 static void do_video_out(AVFormatContext *s,
1153                          OutputStream *ost,
1154                          InputStream *ist,
1155                          AVFrame *in_picture,
1156                          int *frame_size, float quality)
1157 {
1158     int nb_frames, i, ret, format_video_sync;
1159     AVFrame *final_picture;
1160     AVCodecContext *enc;
1161     double sync_ipts;
1162
1163     enc = ost->st->codec;
1164
1165     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1166
1167     /* by default, we output a single frame */
1168     nb_frames = 1;
1169
1170     *frame_size = 0;
1171
1172     format_video_sync = video_sync_method;
1173     if (format_video_sync < 0)
1174         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1175                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1176
1177     if (format_video_sync) {
1178         double vdelta = sync_ipts - ost->sync_opts;
1179         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1180         if (vdelta < -1.1)
1181             nb_frames = 0;
1182         else if (format_video_sync == 2) {
1183             if(vdelta<=-0.6){
1184                 nb_frames=0;
1185             }else if(vdelta>0.6)
1186                 ost->sync_opts= lrintf(sync_ipts);
1187         }else if (vdelta > 1.1)
1188             nb_frames = lrintf(vdelta);
1189 //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);
1190         if (nb_frames == 0){
1191             ++nb_frames_drop;
1192             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1193         }else if (nb_frames > 1) {
1194             nb_frames_dup += nb_frames - 1;
1195             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1196         }
1197     }else
1198         ost->sync_opts= lrintf(sync_ipts);
1199
1200     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1201     if (nb_frames <= 0)
1202         return;
1203
1204     do_video_resample(ost, ist, in_picture, &final_picture);
1205
1206     /* duplicates frame if needed */
1207     for(i=0;i<nb_frames;i++) {
1208         AVPacket pkt;
1209         av_init_packet(&pkt);
1210         pkt.stream_index= ost->index;
1211
1212         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1213             enc->codec->id == CODEC_ID_RAWVIDEO) {
1214             /* raw pictures are written as AVPicture structure to
1215                avoid any copies. We support temporarily the older
1216                method. */
1217             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1218             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1219             pkt.data= (uint8_t *)final_picture;
1220             pkt.size=  sizeof(AVPicture);
1221             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1222             pkt.flags |= AV_PKT_FLAG_KEY;
1223
1224             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1225         } else {
1226             AVFrame big_picture;
1227
1228             big_picture= *final_picture;
1229             /* better than nothing: use input picture interlaced
1230                settings */
1231             big_picture.interlaced_frame = in_picture->interlaced_frame;
1232             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1233                 if (ost->top_field_first == -1)
1234                     big_picture.top_field_first = in_picture->top_field_first;
1235                 else
1236                     big_picture.top_field_first = !!ost->top_field_first;
1237             }
1238
1239             /* handles same_quant here. This is not correct because it may
1240                not be a global option */
1241             big_picture.quality = quality;
1242             if (!enc->me_threshold)
1243                 big_picture.pict_type = 0;
1244 //            big_picture.pts = AV_NOPTS_VALUE;
1245             big_picture.pts= ost->sync_opts;
1246 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1247 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1248             if (ost->forced_kf_index < ost->forced_kf_count &&
1249                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1250                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1251                 ost->forced_kf_index++;
1252             }
1253             ret = avcodec_encode_video(enc,
1254                                        bit_buffer, bit_buffer_size,
1255                                        &big_picture);
1256             if (ret < 0) {
1257                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1258                 exit_program(1);
1259             }
1260
1261             if(ret>0){
1262                 pkt.data= bit_buffer;
1263                 pkt.size= ret;
1264                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1265                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1266 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1267    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1268    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1269
1270                 if(enc->coded_frame->key_frame)
1271                     pkt.flags |= AV_PKT_FLAG_KEY;
1272                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1273                 *frame_size = ret;
1274                 video_size += ret;
1275                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1276                 //        enc->frame_number-1, ret, enc->pict_type);
1277                 /* if two pass, output log */
1278                 if (ost->logfile && enc->stats_out) {
1279                     fprintf(ost->logfile, "%s", enc->stats_out);
1280                 }
1281             }
1282         }
1283         ost->sync_opts++;
1284         ost->frame_number++;
1285     }
1286 }
1287
1288 static double psnr(double d){
1289     return -10.0*log(d)/log(10.0);
1290 }
1291
1292 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1293                            int frame_size)
1294 {
1295     AVCodecContext *enc;
1296     int frame_number;
1297     double ti1, bitrate, avg_bitrate;
1298
1299     /* this is executed just the first time do_video_stats is called */
1300     if (!vstats_file) {
1301         vstats_file = fopen(vstats_filename, "w");
1302         if (!vstats_file) {
1303             perror("fopen");
1304             exit_program(1);
1305         }
1306     }
1307
1308     enc = ost->st->codec;
1309     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1310         frame_number = ost->frame_number;
1311         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1312         if (enc->flags&CODEC_FLAG_PSNR)
1313             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1314
1315         fprintf(vstats_file,"f_size= %6d ", frame_size);
1316         /* compute pts value */
1317         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1318         if (ti1 < 0.01)
1319             ti1 = 0.01;
1320
1321         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1322         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1323         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1324             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1325         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1326     }
1327 }
1328
1329 static void print_report(OutputFile *output_files,
1330                          OutputStream *ost_table, int nb_ostreams,
1331                          int is_last_report, int64_t timer_start)
1332 {
1333     char buf[1024];
1334     OutputStream *ost;
1335     AVFormatContext *oc;
1336     int64_t total_size;
1337     AVCodecContext *enc;
1338     int frame_number, vid, i;
1339     double bitrate, ti1, pts;
1340     static int64_t last_time = -1;
1341     static int qp_histogram[52];
1342
1343     if (!print_stats && !is_last_report)
1344         return;
1345
1346     if (!is_last_report) {
1347         int64_t cur_time;
1348         /* display the report every 0.5 seconds */
1349         cur_time = av_gettime();
1350         if (last_time == -1) {
1351             last_time = cur_time;
1352             return;
1353         }
1354         if ((cur_time - last_time) < 500000)
1355             return;
1356         last_time = cur_time;
1357     }
1358
1359
1360     oc = output_files[0].ctx;
1361
1362     total_size = avio_size(oc->pb);
1363     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1364         total_size= avio_tell(oc->pb);
1365
1366     buf[0] = '\0';
1367     ti1 = 1e10;
1368     vid = 0;
1369     for(i=0;i<nb_ostreams;i++) {
1370         float q = -1;
1371         ost = &ost_table[i];
1372         enc = ost->st->codec;
1373         if (!ost->stream_copy && enc->coded_frame)
1374             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1375         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1376             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1377         }
1378         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1379             float t = (av_gettime()-timer_start) / 1000000.0;
1380
1381             frame_number = ost->frame_number;
1382             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1383                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1384             if(is_last_report)
1385                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1386             if(qp_hist){
1387                 int j;
1388                 int qp = lrintf(q);
1389                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1390                     qp_histogram[qp]++;
1391                 for(j=0; j<32; j++)
1392                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1393             }
1394             if (enc->flags&CODEC_FLAG_PSNR){
1395                 int j;
1396                 double error, error_sum=0;
1397                 double scale, scale_sum=0;
1398                 char type[3]= {'Y','U','V'};
1399                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1400                 for(j=0; j<3; j++){
1401                     if(is_last_report){
1402                         error= enc->error[j];
1403                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1404                     }else{
1405                         error= enc->coded_frame->error[j];
1406                         scale= enc->width*enc->height*255.0*255.0;
1407                     }
1408                     if(j) scale/=4;
1409                     error_sum += error;
1410                     scale_sum += scale;
1411                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1412                 }
1413                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1414             }
1415             vid = 1;
1416         }
1417         /* compute min output value */
1418         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1419         if ((pts < ti1) && (pts > 0))
1420             ti1 = pts;
1421     }
1422     if (ti1 < 0.01)
1423         ti1 = 0.01;
1424
1425     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1426
1427     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1428             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1429             (double)total_size / 1024, ti1, bitrate);
1430
1431     if (nb_frames_dup || nb_frames_drop)
1432         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1433                 nb_frames_dup, nb_frames_drop);
1434
1435     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1436
1437     fflush(stderr);
1438
1439     if (is_last_report) {
1440         int64_t raw= audio_size + video_size + extra_size;
1441         av_log(NULL, AV_LOG_INFO, "\n");
1442         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1443                video_size/1024.0,
1444                audio_size/1024.0,
1445                extra_size/1024.0,
1446                100.0*(total_size - raw)/raw
1447         );
1448     }
1449 }
1450
1451 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1452 {
1453     int i, ret;
1454
1455     for (i = 0; i < nb_ostreams; i++) {
1456         OutputStream   *ost = &ost_table[i];
1457         AVCodecContext *enc = ost->st->codec;
1458         AVFormatContext *os = output_files[ost->file_index].ctx;
1459
1460         if (!ost->encoding_needed)
1461             continue;
1462
1463         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1464             continue;
1465         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1466             continue;
1467
1468         for(;;) {
1469             AVPacket pkt;
1470             int fifo_bytes;
1471             av_init_packet(&pkt);
1472             pkt.stream_index= ost->index;
1473
1474             switch (ost->st->codec->codec_type) {
1475             case AVMEDIA_TYPE_AUDIO:
1476                 fifo_bytes = av_fifo_size(ost->fifo);
1477                 ret = 0;
1478                 /* encode any samples remaining in fifo */
1479                 if (fifo_bytes > 0) {
1480                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1481                     int fs_tmp = enc->frame_size;
1482
1483                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1484                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1485                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1486                     } else { /* pad */
1487                         int frame_bytes = enc->frame_size*osize*enc->channels;
1488                         if (allocated_audio_buf_size < frame_bytes)
1489                             exit_program(1);
1490                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1491                     }
1492
1493                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1494                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1495                                               ost->st->time_base.num, enc->sample_rate);
1496                     enc->frame_size = fs_tmp;
1497                 }
1498                 if (ret <= 0) {
1499                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1500                 }
1501                 if (ret < 0) {
1502                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1503                     exit_program(1);
1504                 }
1505                 audio_size += ret;
1506                 pkt.flags |= AV_PKT_FLAG_KEY;
1507                 break;
1508             case AVMEDIA_TYPE_VIDEO:
1509                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1510                 if (ret < 0) {
1511                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1512                     exit_program(1);
1513                 }
1514                 video_size += ret;
1515                 if(enc->coded_frame && enc->coded_frame->key_frame)
1516                     pkt.flags |= AV_PKT_FLAG_KEY;
1517                 if (ost->logfile && enc->stats_out) {
1518                     fprintf(ost->logfile, "%s", enc->stats_out);
1519                 }
1520                 break;
1521             default:
1522                 ret=-1;
1523             }
1524
1525             if (ret <= 0)
1526                 break;
1527             pkt.data = bit_buffer;
1528             pkt.size = ret;
1529             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1530                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1531             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1532         }
1533     }
1534 }
1535
1536 /*
1537  * Check whether a packet from ist should be written into ost at this time
1538  */
1539 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1540 {
1541     OutputFile *of = &output_files[ost->file_index];
1542     int ist_index  = ist - input_streams;
1543
1544     if (ost->source_index != ist_index)
1545         return 0;
1546
1547     if (of->start_time && ist->pts < of->start_time)
1548         return 0;
1549
1550     if (of->recording_time != INT64_MAX &&
1551         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1552                       (AVRational){1, 1000000}) >= 0) {
1553         ost->is_past_recording_time = 1;
1554         return 0;
1555     }
1556
1557     return 1;
1558 }
1559
1560 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1561 {
1562     OutputFile *of = &output_files[ost->file_index];
1563     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1564     AVPacket opkt;
1565
1566     av_init_packet(&opkt);
1567
1568     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1569         !ost->copy_initial_nonkeyframes)
1570         return;
1571
1572     /* force the input stream PTS */
1573     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1574         audio_size += pkt->size;
1575     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1576         video_size += pkt->size;
1577         ost->sync_opts++;
1578     }
1579
1580     opkt.stream_index = ost->index;
1581     if (pkt->pts != AV_NOPTS_VALUE)
1582         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1583     else
1584         opkt.pts = AV_NOPTS_VALUE;
1585
1586     if (pkt->dts == AV_NOPTS_VALUE)
1587         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1588     else
1589         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1590     opkt.dts -= ost_tb_start_time;
1591
1592     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1593     opkt.flags    = pkt->flags;
1594
1595     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1596     if(   ost->st->codec->codec_id != CODEC_ID_H264
1597        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1598        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1599        ) {
1600         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1601             opkt.destruct = av_destruct_packet;
1602     } else {
1603         opkt.data = pkt->data;
1604         opkt.size = pkt->size;
1605     }
1606
1607     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1608     ost->st->codec->frame_number++;
1609     ost->frame_number++;
1610     av_free_packet(&opkt);
1611 }
1612
1613 static void rate_emu_sleep(InputStream *ist)
1614 {
1615     if (input_files[ist->file_index].rate_emu) {
1616         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1617         int64_t now = av_gettime() - ist->start;
1618         if (pts > now)
1619             usleep(pts - now);
1620     }
1621 }
1622
1623 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1624 {
1625     AVFrame *decoded_frame;
1626     AVCodecContext *avctx = ist->st->codec;
1627     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1628     int i, ret;
1629
1630     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1631         return AVERROR(ENOMEM);
1632     else
1633         avcodec_get_frame_defaults(ist->decoded_frame);
1634     decoded_frame = ist->decoded_frame;
1635
1636     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1637     if (ret < 0) {
1638         return ret;
1639     }
1640
1641     if (!*got_output) {
1642         /* no audio frame */
1643         return ret;
1644     }
1645
1646     /* if the decoder provides a pts, use it instead of the last packet pts.
1647        the decoder could be delaying output by a packet or more. */
1648     if (decoded_frame->pts != AV_NOPTS_VALUE)
1649         ist->next_pts = decoded_frame->pts;
1650
1651     /* increment next_pts to use for the case where the input stream does not
1652        have timestamps or there are multiple frames in the packet */
1653     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1654                      avctx->sample_rate;
1655
1656     // preprocess audio (volume)
1657     if (audio_volume != 256) {
1658         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1659         void *samples = decoded_frame->data[0];
1660         switch (avctx->sample_fmt) {
1661         case AV_SAMPLE_FMT_U8:
1662         {
1663             uint8_t *volp = samples;
1664             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1665                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1666                 *volp++ = av_clip_uint8(v);
1667             }
1668             break;
1669         }
1670         case AV_SAMPLE_FMT_S16:
1671         {
1672             int16_t *volp = samples;
1673             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1674                 int v = ((*volp) * audio_volume + 128) >> 8;
1675                 *volp++ = av_clip_int16(v);
1676             }
1677             break;
1678         }
1679         case AV_SAMPLE_FMT_S32:
1680         {
1681             int32_t *volp = samples;
1682             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1683                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1684                 *volp++ = av_clipl_int32(v);
1685             }
1686             break;
1687         }
1688         case AV_SAMPLE_FMT_FLT:
1689         {
1690             float *volp = samples;
1691             float scale = audio_volume / 256.f;
1692             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1693                 *volp++ *= scale;
1694             }
1695             break;
1696         }
1697         case AV_SAMPLE_FMT_DBL:
1698         {
1699             double *volp = samples;
1700             double scale = audio_volume / 256.;
1701             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1702                 *volp++ *= scale;
1703             }
1704             break;
1705         }
1706         default:
1707             av_log(NULL, AV_LOG_FATAL,
1708                    "Audio volume adjustment on sample format %s is not supported.\n",
1709                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1710             exit_program(1);
1711         }
1712     }
1713
1714     rate_emu_sleep(ist);
1715
1716     for (i = 0; i < nb_output_streams; i++) {
1717         OutputStream *ost = &output_streams[i];
1718
1719         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1720             continue;
1721         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1722     }
1723
1724     return ret;
1725 }
1726
1727 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1728 {
1729     AVFrame *decoded_frame, *filtered_frame = NULL;
1730     void *buffer_to_free = NULL;
1731     int i, ret = 0;
1732     float quality;
1733 #if CONFIG_AVFILTER
1734     int frame_available = 1;
1735 #endif
1736
1737     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1738         return AVERROR(ENOMEM);
1739     else
1740         avcodec_get_frame_defaults(ist->decoded_frame);
1741     decoded_frame = ist->decoded_frame;
1742     pkt->pts  = *pkt_pts;
1743     pkt->dts  = ist->pts;
1744     *pkt_pts  = AV_NOPTS_VALUE;
1745
1746     ret = avcodec_decode_video2(ist->st->codec,
1747                                 decoded_frame, got_output, pkt);
1748     if (ret < 0)
1749         return ret;
1750
1751     quality = same_quant ? decoded_frame->quality : 0;
1752     if (!*got_output) {
1753         /* no picture yet */
1754         return ret;
1755     }
1756     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1757                                                  decoded_frame->pkt_dts);
1758     if (pkt->duration)
1759         ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1760     else if (ist->st->codec->time_base.num != 0) {
1761         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1762                                            ist->st->codec->ticks_per_frame;
1763         ist->next_pts += ((int64_t)AV_TIME_BASE *
1764                           ist->st->codec->time_base.num * ticks) /
1765                           ist->st->codec->time_base.den;
1766     }
1767     pkt->size = 0;
1768     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1769
1770     rate_emu_sleep(ist);
1771
1772     for (i = 0; i < nb_output_streams; i++) {
1773         OutputStream *ost = &output_streams[i];
1774         int frame_size;
1775
1776         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1777             continue;
1778
1779 #if CONFIG_AVFILTER
1780         if (ost->input_video_filter) {
1781             AVRational sar;
1782             if (ist->st->sample_aspect_ratio.num)
1783                 sar = ist->st->sample_aspect_ratio;
1784             else
1785                 sar = ist->st->codec->sample_aspect_ratio;
1786             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1787             if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1788                 av_free(buffer_to_free);
1789                 return AVERROR(ENOMEM);
1790             } else
1791                 avcodec_get_frame_defaults(ist->filtered_frame);
1792             filtered_frame = ist->filtered_frame;
1793             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1794         }
1795         while (frame_available) {
1796             AVRational ist_pts_tb;
1797             if (ost->output_video_filter)
1798                 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1799             if (ost->picref)
1800                 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1801             if (ost->picref->video && !ost->frame_aspect_ratio)
1802                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1803 #else
1804             filtered_frame = decoded_frame;
1805 #endif
1806
1807             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1808                          same_quant ? quality : ost->st->codec->global_quality);
1809             if (vstats_filename && frame_size)
1810                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1811 #if CONFIG_AVFILTER
1812             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1813             if (ost->picref)
1814                 avfilter_unref_buffer(ost->picref);
1815         }
1816 #endif
1817     }
1818
1819     av_free(buffer_to_free);
1820     return ret;
1821 }
1822
1823 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1824 {
1825     AVSubtitle subtitle;
1826     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1827                                           &subtitle, got_output, pkt);
1828     if (ret < 0)
1829         return ret;
1830     if (!*got_output)
1831         return ret;
1832
1833     rate_emu_sleep(ist);
1834
1835     for (i = 0; i < nb_output_streams; i++) {
1836         OutputStream *ost = &output_streams[i];
1837
1838         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1839             continue;
1840
1841         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1842     }
1843
1844     avsubtitle_free(&subtitle);
1845     return ret;
1846 }
1847
1848 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1849 static int output_packet(InputStream *ist,
1850                          OutputStream *ost_table, int nb_ostreams,
1851                          const AVPacket *pkt)
1852 {
1853     int i;
1854     int got_output;
1855     int64_t pkt_pts = AV_NOPTS_VALUE;
1856     AVPacket avpkt;
1857
1858     if (ist->next_pts == AV_NOPTS_VALUE)
1859         ist->next_pts = ist->pts;
1860
1861     if (pkt == NULL) {
1862         /* EOF handling */
1863         av_init_packet(&avpkt);
1864         avpkt.data = NULL;
1865         avpkt.size = 0;
1866         goto handle_eof;
1867     } else {
1868         avpkt = *pkt;
1869     }
1870
1871     if(pkt->dts != AV_NOPTS_VALUE)
1872         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1873     if(pkt->pts != AV_NOPTS_VALUE)
1874         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1875
1876     //while we have more to decode or while the decoder did output something on EOF
1877     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1878         int ret = 0;
1879     handle_eof:
1880
1881         ist->pts = ist->next_pts;
1882
1883         if (avpkt.size && avpkt.size != pkt->size) {
1884             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1885                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1886             ist->showed_multi_packet_warning = 1;
1887         }
1888
1889         switch(ist->st->codec->codec_type) {
1890         case AVMEDIA_TYPE_AUDIO:
1891             ret = transcode_audio    (ist, &avpkt, &got_output);
1892             break;
1893         case AVMEDIA_TYPE_VIDEO:
1894             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
1895             break;
1896         case AVMEDIA_TYPE_SUBTITLE:
1897             ret = transcode_subtitles(ist, &avpkt, &got_output);
1898             break;
1899         default:
1900             return -1;
1901         }
1902
1903         if (ret < 0)
1904             return ret;
1905         // touch data and size only if not EOF
1906         if (pkt) {
1907             avpkt.data += ret;
1908             avpkt.size -= ret;
1909         }
1910         if (!got_output) {
1911             continue;
1912         }
1913     }
1914
1915     /* handle stream copy */
1916     if (!ist->decoding_needed) {
1917         rate_emu_sleep(ist);
1918         ist->pts = ist->next_pts;
1919         switch (ist->st->codec->codec_type) {
1920         case AVMEDIA_TYPE_AUDIO:
1921             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1922                              ist->st->codec->sample_rate;
1923             break;
1924         case AVMEDIA_TYPE_VIDEO:
1925             if (ist->st->codec->time_base.num != 0) {
1926                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1927                 ist->next_pts += ((int64_t)AV_TIME_BASE *
1928                                   ist->st->codec->time_base.num * ticks) /
1929                                   ist->st->codec->time_base.den;
1930             }
1931             break;
1932         }
1933     }
1934     for (i = 0; pkt && i < nb_ostreams; i++) {
1935         OutputStream *ost = &ost_table[i];
1936
1937         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1938             continue;
1939
1940         do_streamcopy(ist, ost, pkt);
1941     }
1942
1943     return 0;
1944 }
1945
1946 static void print_sdp(OutputFile *output_files, int n)
1947 {
1948     char sdp[2048];
1949     int i;
1950     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1951
1952     if (!avc)
1953         exit_program(1);
1954     for (i = 0; i < n; i++)
1955         avc[i] = output_files[i].ctx;
1956
1957     av_sdp_create(avc, n, sdp, sizeof(sdp));
1958     printf("SDP:\n%s\n", sdp);
1959     fflush(stdout);
1960     av_freep(&avc);
1961 }
1962
1963 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1964                              char *error, int error_len)
1965 {
1966     int i;
1967     InputStream *ist = &input_streams[ist_index];
1968     if (ist->decoding_needed) {
1969         AVCodec *codec = ist->dec;
1970         if (!codec) {
1971             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1972                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1973             return AVERROR(EINVAL);
1974         }
1975
1976         /* update requested sample format for the decoder based on the
1977            corresponding encoder sample format */
1978         for (i = 0; i < nb_output_streams; i++) {
1979             OutputStream *ost = &output_streams[i];
1980             if (ost->source_index == ist_index) {
1981                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1982                 break;
1983             }
1984         }
1985
1986         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1987             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1988                     ist->file_index, ist->st->index);
1989             return AVERROR(EINVAL);
1990         }
1991         assert_codec_experimental(ist->st->codec, 0);
1992         assert_avoptions(ist->opts);
1993     }
1994
1995     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;
1996     ist->next_pts = AV_NOPTS_VALUE;
1997     init_pts_correction(&ist->pts_ctx);
1998     ist->is_start = 1;
1999
2000     return 0;
2001 }
2002
2003 static int transcode_init(OutputFile *output_files,
2004                           int nb_output_files,
2005                           InputFile *input_files,
2006                           int nb_input_files)
2007 {
2008     int ret = 0, i, j, k;
2009     AVFormatContext *oc;
2010     AVCodecContext *codec, *icodec;
2011     OutputStream *ost;
2012     InputStream *ist;
2013     char error[1024];
2014     int want_sdp = 1;
2015
2016     /* init framerate emulation */
2017     for (i = 0; i < nb_input_files; i++) {
2018         InputFile *ifile = &input_files[i];
2019         if (ifile->rate_emu)
2020             for (j = 0; j < ifile->nb_streams; j++)
2021                 input_streams[j + ifile->ist_index].start = av_gettime();
2022     }
2023
2024     /* output stream init */
2025     for (i = 0; i < nb_output_files; i++) {
2026         oc = output_files[i].ctx;
2027         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2028             av_dump_format(oc, i, oc->filename, 1);
2029             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2030             return AVERROR(EINVAL);
2031         }
2032     }
2033
2034     /* for each output stream, we compute the right encoding parameters */
2035     for (i = 0; i < nb_output_streams; i++) {
2036         ost = &output_streams[i];
2037         oc  = output_files[ost->file_index].ctx;
2038         ist = &input_streams[ost->source_index];
2039
2040         if (ost->attachment_filename)
2041             continue;
2042
2043         codec  = ost->st->codec;
2044         icodec = ist->st->codec;
2045
2046         ost->st->disposition          = ist->st->disposition;
2047         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2048         codec->chroma_sample_location = icodec->chroma_sample_location;
2049
2050         if (ost->stream_copy) {
2051             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2052
2053             if (extra_size > INT_MAX) {
2054                 return AVERROR(EINVAL);
2055             }
2056
2057             /* if stream_copy is selected, no need to decode or encode */
2058             codec->codec_id   = icodec->codec_id;
2059             codec->codec_type = icodec->codec_type;
2060
2061             if (!codec->codec_tag) {
2062                 if (!oc->oformat->codec_tag ||
2063                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2064                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2065                     codec->codec_tag = icodec->codec_tag;
2066             }
2067
2068             codec->bit_rate       = icodec->bit_rate;
2069             codec->rc_max_rate    = icodec->rc_max_rate;
2070             codec->rc_buffer_size = icodec->rc_buffer_size;
2071             codec->extradata      = av_mallocz(extra_size);
2072             if (!codec->extradata) {
2073                 return AVERROR(ENOMEM);
2074             }
2075             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2076             codec->extradata_size = icodec->extradata_size;
2077             if (!copy_tb) {
2078                 codec->time_base      = icodec->time_base;
2079                 codec->time_base.num *= icodec->ticks_per_frame;
2080                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2081                           codec->time_base.num, codec->time_base.den, INT_MAX);
2082             } else
2083                 codec->time_base = ist->st->time_base;
2084
2085             switch(codec->codec_type) {
2086             case AVMEDIA_TYPE_AUDIO:
2087                 if(audio_volume != 256) {
2088                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2089                     exit_program(1);
2090                 }
2091                 codec->channel_layout     = icodec->channel_layout;
2092                 codec->sample_rate        = icodec->sample_rate;
2093                 codec->channels           = icodec->channels;
2094                 codec->frame_size         = icodec->frame_size;
2095                 codec->audio_service_type = icodec->audio_service_type;
2096                 codec->block_align        = icodec->block_align;
2097                 break;
2098             case AVMEDIA_TYPE_VIDEO:
2099                 codec->pix_fmt            = icodec->pix_fmt;
2100                 codec->width              = icodec->width;
2101                 codec->height             = icodec->height;
2102                 codec->has_b_frames       = icodec->has_b_frames;
2103                 if (!codec->sample_aspect_ratio.num) {
2104                     codec->sample_aspect_ratio   =
2105                     ost->st->sample_aspect_ratio =
2106                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2107                         ist->st->codec->sample_aspect_ratio.num ?
2108                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2109                 }
2110                 break;
2111             case AVMEDIA_TYPE_SUBTITLE:
2112                 codec->width  = icodec->width;
2113                 codec->height = icodec->height;
2114                 break;
2115             case AVMEDIA_TYPE_DATA:
2116             case AVMEDIA_TYPE_ATTACHMENT:
2117                 break;
2118             default:
2119                 abort();
2120             }
2121         } else {
2122             if (!ost->enc)
2123                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2124
2125             ist->decoding_needed = 1;
2126             ost->encoding_needed = 1;
2127
2128             switch(codec->codec_type) {
2129             case AVMEDIA_TYPE_AUDIO:
2130                 ost->fifo = av_fifo_alloc(1024);
2131                 if (!ost->fifo) {
2132                     return AVERROR(ENOMEM);
2133                 }
2134                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2135
2136                 if (!codec->sample_rate)
2137                     codec->sample_rate = icodec->sample_rate;
2138                 choose_sample_rate(ost->st, ost->enc);
2139                 codec->time_base = (AVRational){1, codec->sample_rate};
2140
2141                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2142                     codec->sample_fmt = icodec->sample_fmt;
2143                 choose_sample_fmt(ost->st, ost->enc);
2144
2145                 if (!codec->channels)
2146                     codec->channels = icodec->channels;
2147                 codec->channel_layout = icodec->channel_layout;
2148                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2149                     codec->channel_layout = 0;
2150
2151                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2152                 icodec->request_channels  = codec-> channels;
2153                 ost->resample_sample_fmt  = icodec->sample_fmt;
2154                 ost->resample_sample_rate = icodec->sample_rate;
2155                 ost->resample_channels    = icodec->channels;
2156                 break;
2157             case AVMEDIA_TYPE_VIDEO:
2158                 if (codec->pix_fmt == PIX_FMT_NONE)
2159                     codec->pix_fmt = icodec->pix_fmt;
2160                 choose_pixel_fmt(ost->st, ost->enc);
2161
2162                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2163                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2164                     exit_program(1);
2165                 }
2166
2167                 if (!codec->width || !codec->height) {
2168                     codec->width  = icodec->width;
2169                     codec->height = icodec->height;
2170                 }
2171
2172                 ost->video_resample = codec->width   != icodec->width  ||
2173                                       codec->height  != icodec->height ||
2174                                       codec->pix_fmt != icodec->pix_fmt;
2175                 if (ost->video_resample) {
2176 #if !CONFIG_AVFILTER
2177                     avcodec_get_frame_defaults(&ost->pict_tmp);
2178                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2179                                        codec->width, codec->height)) {
2180                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2181                         exit_program(1);
2182                     }
2183                     ost->img_resample_ctx = sws_getContext(
2184                         icodec->width,
2185                         icodec->height,
2186                         icodec->pix_fmt,
2187                         codec->width,
2188                         codec->height,
2189                         codec->pix_fmt,
2190                         ost->sws_flags, NULL, NULL, NULL);
2191                     if (ost->img_resample_ctx == NULL) {
2192                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2193                         exit_program(1);
2194                     }
2195 #endif
2196                     codec->bits_per_raw_sample= 0;
2197                 }
2198
2199                 ost->resample_height  = icodec->height;
2200                 ost->resample_width   = icodec->width;
2201                 ost->resample_pix_fmt = icodec->pix_fmt;
2202
2203                 if (!ost->frame_rate.num)
2204                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2205                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2206                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2207                     ost->frame_rate = ost->enc->supported_framerates[idx];
2208                 }
2209                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2210
2211 #if CONFIG_AVFILTER
2212                 if (configure_video_filters(ist, ost)) {
2213                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2214                     exit(1);
2215                 }
2216 #endif
2217                 break;
2218             case AVMEDIA_TYPE_SUBTITLE:
2219                 break;
2220             default:
2221                 abort();
2222                 break;
2223             }
2224             /* two pass mode */
2225             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2226                 char logfilename[1024];
2227                 FILE *f;
2228
2229                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2230                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2231                          i);
2232                 if (codec->flags & CODEC_FLAG_PASS1) {
2233                     f = fopen(logfilename, "wb");
2234                     if (!f) {
2235                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2236                                logfilename, strerror(errno));
2237                         exit_program(1);
2238                     }
2239                     ost->logfile = f;
2240                 } else {
2241                     char  *logbuffer;
2242                     size_t logbuffer_size;
2243                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2244                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2245                                logfilename);
2246                         exit_program(1);
2247                     }
2248                     codec->stats_in = logbuffer;
2249                 }
2250             }
2251         }
2252         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2253             int        size = codec->width * codec->height;
2254             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 200);
2255         }
2256     }
2257
2258     if (!bit_buffer)
2259         bit_buffer = av_malloc(bit_buffer_size);
2260     if (!bit_buffer) {
2261         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2262                bit_buffer_size);
2263         return AVERROR(ENOMEM);
2264     }
2265
2266     /* open each encoder */
2267     for (i = 0; i < nb_output_streams; i++) {
2268         ost = &output_streams[i];
2269         if (ost->encoding_needed) {
2270             AVCodec      *codec = ost->enc;
2271             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2272             if (!codec) {
2273                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2274                          ost->st->codec->codec_id, ost->file_index, ost->index);
2275                 ret = AVERROR(EINVAL);
2276                 goto dump_format;
2277             }
2278             if (dec->subtitle_header) {
2279                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2280                 if (!ost->st->codec->subtitle_header) {
2281                     ret = AVERROR(ENOMEM);
2282                     goto dump_format;
2283                 }
2284                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2285                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2286             }
2287             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2288                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2289                         ost->file_index, ost->index);
2290                 ret = AVERROR(EINVAL);
2291                 goto dump_format;
2292             }
2293             assert_codec_experimental(ost->st->codec, 1);
2294             assert_avoptions(ost->opts);
2295             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2296                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2297                                              "It takes bits/s as argument, not kbits/s\n");
2298             extra_size += ost->st->codec->extradata_size;
2299
2300             if (ost->st->codec->me_threshold)
2301                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2302         }
2303     }
2304
2305     /* init input streams */
2306     for (i = 0; i < nb_input_streams; i++)
2307         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2308             goto dump_format;
2309
2310     /* discard unused programs */
2311     for (i = 0; i < nb_input_files; i++) {
2312         InputFile *ifile = &input_files[i];
2313         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2314             AVProgram *p = ifile->ctx->programs[j];
2315             int discard  = AVDISCARD_ALL;
2316
2317             for (k = 0; k < p->nb_stream_indexes; k++)
2318                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2319                     discard = AVDISCARD_DEFAULT;
2320                     break;
2321                 }
2322             p->discard = discard;
2323         }
2324     }
2325
2326     /* open files and write file headers */
2327     for (i = 0; i < nb_output_files; i++) {
2328         oc = output_files[i].ctx;
2329         oc->interrupt_callback = int_cb;
2330         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2331             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2332             ret = AVERROR(EINVAL);
2333             goto dump_format;
2334         }
2335         assert_avoptions(output_files[i].opts);
2336         if (strcmp(oc->oformat->name, "rtp")) {
2337             want_sdp = 0;
2338         }
2339     }
2340
2341  dump_format:
2342     /* dump the file output parameters - cannot be done before in case
2343        of stream copy */
2344     for (i = 0; i < nb_output_files; i++) {
2345         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2346     }
2347
2348     /* dump the stream mapping */
2349     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2350     for (i = 0; i < nb_output_streams; i++) {
2351         ost = &output_streams[i];
2352
2353         if (ost->attachment_filename) {
2354             /* an attached file */
2355             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2356                    ost->attachment_filename, ost->file_index, ost->index);
2357             continue;
2358         }
2359         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2360                input_streams[ost->source_index].file_index,
2361                input_streams[ost->source_index].st->index,
2362                ost->file_index,
2363                ost->index);
2364         if (ost->sync_ist != &input_streams[ost->source_index])
2365             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2366                    ost->sync_ist->file_index,
2367                    ost->sync_ist->st->index);
2368         if (ost->stream_copy)
2369             av_log(NULL, AV_LOG_INFO, " (copy)");
2370         else
2371             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2372                    input_streams[ost->source_index].dec->name : "?",
2373                    ost->enc ? ost->enc->name : "?");
2374         av_log(NULL, AV_LOG_INFO, "\n");
2375     }
2376
2377     if (ret) {
2378         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2379         return ret;
2380     }
2381
2382     if (want_sdp) {
2383         print_sdp(output_files, nb_output_files);
2384     }
2385
2386     return 0;
2387 }
2388
2389 /*
2390  * The following code is the main loop of the file converter
2391  */
2392 static int transcode(OutputFile *output_files,
2393                      int nb_output_files,
2394                      InputFile *input_files,
2395                      int nb_input_files)
2396 {
2397     int ret, i;
2398     AVFormatContext *is, *os;
2399     OutputStream *ost;
2400     InputStream *ist;
2401     uint8_t *no_packet;
2402     int no_packet_count=0;
2403     int64_t timer_start;
2404
2405     if (!(no_packet = av_mallocz(nb_input_files)))
2406         exit_program(1);
2407
2408     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2409     if (ret < 0)
2410         goto fail;
2411
2412     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2413     term_init();
2414
2415     timer_start = av_gettime();
2416
2417     for(; received_sigterm == 0;) {
2418         int file_index, ist_index;
2419         AVPacket pkt;
2420         int64_t ipts_min;
2421         double opts_min;
2422
2423         ipts_min = INT64_MAX;
2424         opts_min= 1e100;
2425
2426         /* select the stream that we must read now by looking at the
2427            smallest output pts */
2428         file_index = -1;
2429         for (i = 0; i < nb_output_streams; i++) {
2430             OutputFile *of;
2431             int64_t ipts;
2432             double  opts;
2433             ost = &output_streams[i];
2434             of = &output_files[ost->file_index];
2435             os = output_files[ost->file_index].ctx;
2436             ist = &input_streams[ost->source_index];
2437             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2438                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2439                 continue;
2440             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2441             ipts = ist->pts;
2442             if (!input_files[ist->file_index].eof_reached){
2443                 if(ipts < ipts_min) {
2444                     ipts_min = ipts;
2445                     if(input_sync ) file_index = ist->file_index;
2446                 }
2447                 if(opts < opts_min) {
2448                     opts_min = opts;
2449                     if(!input_sync) file_index = ist->file_index;
2450                 }
2451             }
2452             if (ost->frame_number >= ost->max_frames) {
2453                 int j;
2454                 for (j = 0; j < of->ctx->nb_streams; j++)
2455                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2456                 continue;
2457             }
2458         }
2459         /* if none, if is finished */
2460         if (file_index < 0) {
2461             if(no_packet_count){
2462                 no_packet_count=0;
2463                 memset(no_packet, 0, nb_input_files);
2464                 usleep(10000);
2465                 continue;
2466             }
2467             break;
2468         }
2469
2470         /* read a frame from it and output it in the fifo */
2471         is = input_files[file_index].ctx;
2472         ret= av_read_frame(is, &pkt);
2473         if(ret == AVERROR(EAGAIN)){
2474             no_packet[file_index]=1;
2475             no_packet_count++;
2476             continue;
2477         }
2478         if (ret < 0) {
2479             input_files[file_index].eof_reached = 1;
2480             if (opt_shortest)
2481                 break;
2482             else
2483                 continue;
2484         }
2485
2486         no_packet_count=0;
2487         memset(no_packet, 0, nb_input_files);
2488
2489         if (do_pkt_dump) {
2490             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2491                              is->streams[pkt.stream_index]);
2492         }
2493         /* the following test is needed in case new streams appear
2494            dynamically in stream : we ignore them */
2495         if (pkt.stream_index >= input_files[file_index].nb_streams)
2496             goto discard_packet;
2497         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2498         ist = &input_streams[ist_index];
2499         if (ist->discard)
2500             goto discard_packet;
2501
2502         if (pkt.dts != AV_NOPTS_VALUE)
2503             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2504         if (pkt.pts != AV_NOPTS_VALUE)
2505             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2506
2507         if(pkt.pts != AV_NOPTS_VALUE)
2508             pkt.pts *= ist->ts_scale;
2509         if(pkt.dts != AV_NOPTS_VALUE)
2510             pkt.dts *= ist->ts_scale;
2511
2512 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2513         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2514             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2515             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2516             int64_t delta= pkt_dts - ist->next_pts;
2517             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2518                 input_files[ist->file_index].ts_offset -= delta;
2519                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2520                        delta, input_files[ist->file_index].ts_offset);
2521                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2522                 if(pkt.pts != AV_NOPTS_VALUE)
2523                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2524             }
2525         }
2526
2527         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2528         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2529
2530             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2531                    ist->file_index, ist->st->index);
2532             if (exit_on_error)
2533                 exit_program(1);
2534             av_free_packet(&pkt);
2535             continue;
2536         }
2537
2538     discard_packet:
2539         av_free_packet(&pkt);
2540
2541         /* dump report by using the output first video and audio streams */
2542         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2543     }
2544
2545     /* at the end of stream, we must flush the decoder buffers */
2546     for (i = 0; i < nb_input_streams; i++) {
2547         ist = &input_streams[i];
2548         if (ist->decoding_needed) {
2549             output_packet(ist, output_streams, nb_output_streams, NULL);
2550         }
2551     }
2552     flush_encoders(output_streams, nb_output_streams);
2553
2554     term_exit();
2555
2556     /* write the trailer if needed and close file */
2557     for(i=0;i<nb_output_files;i++) {
2558         os = output_files[i].ctx;
2559         av_write_trailer(os);
2560     }
2561
2562     /* dump report by using the first video and audio streams */
2563     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2564
2565     /* close each encoder */
2566     for (i = 0; i < nb_output_streams; i++) {
2567         ost = &output_streams[i];
2568         if (ost->encoding_needed) {
2569             av_freep(&ost->st->codec->stats_in);
2570             avcodec_close(ost->st->codec);
2571         }
2572 #if CONFIG_AVFILTER
2573         avfilter_graph_free(&ost->graph);
2574 #endif
2575     }
2576
2577     /* close each decoder */
2578     for (i = 0; i < nb_input_streams; i++) {
2579         ist = &input_streams[i];
2580         if (ist->decoding_needed) {
2581             avcodec_close(ist->st->codec);
2582         }
2583     }
2584
2585     /* finished ! */
2586     ret = 0;
2587
2588  fail:
2589     av_freep(&bit_buffer);
2590     av_freep(&no_packet);
2591
2592     if (output_streams) {
2593         for (i = 0; i < nb_output_streams; i++) {
2594             ost = &output_streams[i];
2595             if (ost) {
2596                 if (ost->stream_copy)
2597                     av_freep(&ost->st->codec->extradata);
2598                 if (ost->logfile) {
2599                     fclose(ost->logfile);
2600                     ost->logfile = NULL;
2601                 }
2602                 av_fifo_free(ost->fifo); /* works even if fifo is not
2603                                              initialized but set to zero */
2604                 av_freep(&ost->st->codec->subtitle_header);
2605                 av_free(ost->pict_tmp.data[0]);
2606                 av_free(ost->forced_kf_pts);
2607                 if (ost->video_resample)
2608                     sws_freeContext(ost->img_resample_ctx);
2609                 if (ost->resample)
2610                     audio_resample_close(ost->resample);
2611                 if (ost->reformat_ctx)
2612                     av_audio_convert_free(ost->reformat_ctx);
2613                 av_dict_free(&ost->opts);
2614             }
2615         }
2616     }
2617     return ret;
2618 }
2619
2620 static double parse_frame_aspect_ratio(const char *arg)
2621 {
2622     int x = 0, y = 0;
2623     double ar = 0;
2624     const char *p;
2625     char *end;
2626
2627     p = strchr(arg, ':');
2628     if (p) {
2629         x = strtol(arg, &end, 10);
2630         if (end == p)
2631             y = strtol(end+1, &end, 10);
2632         if (x > 0 && y > 0)
2633             ar = (double)x / (double)y;
2634     } else
2635         ar = strtod(arg, NULL);
2636
2637     if (!ar) {
2638         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2639         exit_program(1);
2640     }
2641     return ar;
2642 }
2643
2644 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2645 {
2646     return parse_option(o, "codec:a", arg, options);
2647 }
2648
2649 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2650 {
2651     return parse_option(o, "codec:v", arg, options);
2652 }
2653
2654 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2655 {
2656     return parse_option(o, "codec:s", arg, options);
2657 }
2658
2659 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2660 {
2661     return parse_option(o, "codec:d", arg, options);
2662 }
2663
2664 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2665 {
2666     StreamMap *m = NULL;
2667     int i, negative = 0, file_idx;
2668     int sync_file_idx = -1, sync_stream_idx;
2669     char *p, *sync;
2670     char *map;
2671
2672     if (*arg == '-') {
2673         negative = 1;
2674         arg++;
2675     }
2676     map = av_strdup(arg);
2677
2678     /* parse sync stream first, just pick first matching stream */
2679     if (sync = strchr(map, ',')) {
2680         *sync = 0;
2681         sync_file_idx = strtol(sync + 1, &sync, 0);
2682         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2683             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2684             exit_program(1);
2685         }
2686         if (*sync)
2687             sync++;
2688         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2689             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2690                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2691                 sync_stream_idx = i;
2692                 break;
2693             }
2694         if (i == input_files[sync_file_idx].nb_streams) {
2695             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2696                                        "match any streams.\n", arg);
2697             exit_program(1);
2698         }
2699     }
2700
2701
2702     file_idx = strtol(map, &p, 0);
2703     if (file_idx >= nb_input_files || file_idx < 0) {
2704         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2705         exit_program(1);
2706     }
2707     if (negative)
2708         /* disable some already defined maps */
2709         for (i = 0; i < o->nb_stream_maps; i++) {
2710             m = &o->stream_maps[i];
2711             if (file_idx == m->file_index &&
2712                 check_stream_specifier(input_files[m->file_index].ctx,
2713                                        input_files[m->file_index].ctx->streams[m->stream_index],
2714                                        *p == ':' ? p + 1 : p) > 0)
2715                 m->disabled = 1;
2716         }
2717     else
2718         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2719             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2720                         *p == ':' ? p + 1 : p) <= 0)
2721                 continue;
2722             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2723                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2724             m = &o->stream_maps[o->nb_stream_maps - 1];
2725
2726             m->file_index   = file_idx;
2727             m->stream_index = i;
2728
2729             if (sync_file_idx >= 0) {
2730                 m->sync_file_index   = sync_file_idx;
2731                 m->sync_stream_index = sync_stream_idx;
2732             } else {
2733                 m->sync_file_index   = file_idx;
2734                 m->sync_stream_index = i;
2735             }
2736         }
2737
2738     if (!m) {
2739         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2740         exit_program(1);
2741     }
2742
2743     av_freep(&map);
2744     return 0;
2745 }
2746
2747 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2748 {
2749     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2750                                 &o->nb_attachments, o->nb_attachments + 1);
2751     o->attachments[o->nb_attachments - 1] = arg;
2752     return 0;
2753 }
2754
2755 static void parse_meta_type(char *arg, char *type, int *index)
2756 {
2757     if (*arg) {
2758         *type = *arg;
2759         switch (*arg) {
2760         case 'g':
2761             break;
2762         case 's':
2763         case 'c':
2764         case 'p':
2765             if (*(++arg) == ':')
2766                 *index = strtol(++arg, NULL, 0);
2767             break;
2768         default:
2769             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2770             exit_program(1);
2771         }
2772     } else
2773         *type = 'g';
2774 }
2775
2776 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2777 {
2778     MetadataMap *m, *m1;
2779     char *p;
2780
2781     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2782                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2783
2784     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2785     m->file = strtol(arg, &p, 0);
2786     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2787
2788     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2789     if (p = strchr(opt, ':'))
2790         parse_meta_type(p + 1, &m1->type, &m1->index);
2791     else
2792         m1->type = 'g';
2793
2794     if (m->type == 'g' || m1->type == 'g')
2795         o->metadata_global_manual = 1;
2796     if (m->type == 's' || m1->type == 's')
2797         o->metadata_streams_manual = 1;
2798     if (m->type == 'c' || m1->type == 'c')
2799         o->metadata_chapters_manual = 1;
2800
2801     return 0;
2802 }
2803
2804 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2805 {
2806     const char *codec_string = encoder ? "encoder" : "decoder";
2807     AVCodec *codec;
2808
2809     codec = encoder ?
2810         avcodec_find_encoder_by_name(name) :
2811         avcodec_find_decoder_by_name(name);
2812     if(!codec) {
2813         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2814         exit_program(1);
2815     }
2816     if(codec->type != type) {
2817         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2818         exit_program(1);
2819     }
2820     return codec;
2821 }
2822
2823 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
2824 {
2825     char *codec_name = NULL;
2826
2827     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2828     if (codec_name) {
2829         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
2830         st->codec->codec_id = codec->id;
2831         return codec;
2832     } else
2833         return avcodec_find_decoder(st->codec->codec_id);
2834 }
2835
2836 /**
2837  * Add all the streams from the given input file to the global
2838  * list of input streams.
2839  */
2840 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2841 {
2842     int i, rfps, rfps_base;
2843
2844     for (i = 0; i < ic->nb_streams; i++) {
2845         AVStream *st = ic->streams[i];
2846         AVCodecContext *dec = st->codec;
2847         InputStream *ist;
2848
2849         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2850         ist = &input_streams[nb_input_streams - 1];
2851         ist->st = st;
2852         ist->file_index = nb_input_files;
2853         ist->discard = 1;
2854         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2855
2856         ist->ts_scale = 1.0;
2857         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
2858
2859         ist->dec = choose_decoder(o, ic, st);
2860
2861         switch (dec->codec_type) {
2862         case AVMEDIA_TYPE_AUDIO:
2863             if (o->audio_disable)
2864                 st->discard= AVDISCARD_ALL;
2865             break;
2866         case AVMEDIA_TYPE_VIDEO:
2867             rfps      = ic->streams[i]->r_frame_rate.num;
2868             rfps_base = ic->streams[i]->r_frame_rate.den;
2869             if (dec->lowres) {
2870                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2871                 dec->height >>= dec->lowres;
2872                 dec->width  >>= dec->lowres;
2873             }
2874
2875             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2876
2877                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2878                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2879                        (float)rfps / rfps_base, rfps, rfps_base);
2880             }
2881
2882             if (o->video_disable)
2883                 st->discard= AVDISCARD_ALL;
2884             else if(video_discard)
2885                 st->discard= video_discard;
2886             break;
2887         case AVMEDIA_TYPE_DATA:
2888             break;
2889         case AVMEDIA_TYPE_SUBTITLE:
2890             if (o->subtitle_disable)
2891                 st->discard = AVDISCARD_ALL;
2892             break;
2893         case AVMEDIA_TYPE_ATTACHMENT:
2894         case AVMEDIA_TYPE_UNKNOWN:
2895             break;
2896         default:
2897             abort();
2898         }
2899     }
2900 }
2901
2902 static void assert_file_overwrite(const char *filename)
2903 {
2904     if (!file_overwrite &&
2905         (strchr(filename, ':') == NULL || filename[1] == ':' ||
2906          av_strstart(filename, "file:", NULL))) {
2907         if (avio_check(filename, 0) == 0) {
2908             if (!using_stdin) {
2909                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
2910                 fflush(stderr);
2911                 if (!read_yesno()) {
2912                     fprintf(stderr, "Not overwriting - exiting\n");
2913                     exit_program(1);
2914                 }
2915             }
2916             else {
2917                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
2918                 exit_program(1);
2919             }
2920         }
2921     }
2922 }
2923
2924 static void dump_attachment(AVStream *st, const char *filename)
2925 {
2926     int ret;
2927     AVIOContext *out = NULL;
2928     AVDictionaryEntry *e;
2929
2930     if (!st->codec->extradata_size) {
2931         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
2932                nb_input_files - 1, st->index);
2933         return;
2934     }
2935     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
2936         filename = e->value;
2937     if (!*filename) {
2938         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
2939                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
2940         exit_program(1);
2941     }
2942
2943     assert_file_overwrite(filename);
2944
2945     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
2946         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
2947                filename);
2948         exit_program(1);
2949     }
2950
2951     avio_write(out, st->codec->extradata, st->codec->extradata_size);
2952     avio_flush(out);
2953     avio_close(out);
2954 }
2955
2956 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2957 {
2958     AVFormatContext *ic;
2959     AVInputFormat *file_iformat = NULL;
2960     int err, i, ret;
2961     int64_t timestamp;
2962     uint8_t buf[128];
2963     AVDictionary **opts;
2964     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2965
2966     if (o->format) {
2967         if (!(file_iformat = av_find_input_format(o->format))) {
2968             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2969             exit_program(1);
2970         }
2971     }
2972
2973     if (!strcmp(filename, "-"))
2974         filename = "pipe:";
2975
2976     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2977                     !strcmp(filename, "/dev/stdin");
2978
2979     /* get default parameters from command line */
2980     ic = avformat_alloc_context();
2981     if (!ic) {
2982         print_error(filename, AVERROR(ENOMEM));
2983         exit_program(1);
2984     }
2985     if (o->nb_audio_sample_rate) {
2986         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2987         av_dict_set(&format_opts, "sample_rate", buf, 0);
2988     }
2989     if (o->nb_audio_channels) {
2990         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2991         av_dict_set(&format_opts, "channels", buf, 0);
2992     }
2993     if (o->nb_frame_rates) {
2994         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2995     }
2996     if (o->nb_frame_sizes) {
2997         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2998     }
2999     if (o->nb_frame_pix_fmts)
3000         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3001
3002     ic->flags |= AVFMT_FLAG_NONBLOCK;
3003     ic->interrupt_callback = int_cb;
3004
3005     /* open the input file with generic libav function */
3006     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3007     if (err < 0) {
3008         print_error(filename, err);
3009         exit_program(1);
3010     }
3011     assert_avoptions(format_opts);
3012
3013     /* apply forced codec ids */
3014     for (i = 0; i < ic->nb_streams; i++)
3015         choose_decoder(o, ic, ic->streams[i]);
3016
3017     /* Set AVCodecContext options for avformat_find_stream_info */
3018     opts = setup_find_stream_info_opts(ic, codec_opts);
3019     orig_nb_streams = ic->nb_streams;
3020
3021     /* If not enough info to get the stream parameters, we decode the
3022        first frames to get it. (used in mpeg case for example) */
3023     ret = avformat_find_stream_info(ic, opts);
3024     if (ret < 0) {
3025         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3026         avformat_close_input(&ic);
3027         exit_program(1);
3028     }
3029
3030     timestamp = o->start_time;
3031     /* add the stream start time */
3032     if (ic->start_time != AV_NOPTS_VALUE)
3033         timestamp += ic->start_time;
3034
3035     /* if seeking requested, we execute it */
3036     if (o->start_time != 0) {
3037         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3038         if (ret < 0) {
3039             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3040                    filename, (double)timestamp / AV_TIME_BASE);
3041         }
3042     }
3043
3044     /* update the current parameters so that they match the one of the input stream */
3045     add_input_streams(o, ic);
3046
3047     /* dump the file content */
3048     av_dump_format(ic, nb_input_files, filename, 0);
3049
3050     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3051     input_files[nb_input_files - 1].ctx        = ic;
3052     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3053     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3054     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3055     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3056
3057     for (i = 0; i < o->nb_dump_attachment; i++) {
3058         int j;
3059
3060         for (j = 0; j < ic->nb_streams; j++) {
3061             AVStream *st = ic->streams[j];
3062
3063             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3064                 dump_attachment(st, o->dump_attachment[i].u.str);
3065         }
3066     }
3067
3068     for (i = 0; i < orig_nb_streams; i++)
3069         av_dict_free(&opts[i]);
3070     av_freep(&opts);
3071
3072     reset_options(o);
3073     return 0;
3074 }
3075
3076 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3077                                     AVCodecContext *avctx)
3078 {
3079     char *p;
3080     int n = 1, i;
3081     int64_t t;
3082
3083     for (p = kf; *p; p++)
3084         if (*p == ',')
3085             n++;
3086     ost->forced_kf_count = n;
3087     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3088     if (!ost->forced_kf_pts) {
3089         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3090         exit_program(1);
3091     }
3092     for (i = 0; i < n; i++) {
3093         p = i ? strchr(p, ',') + 1 : kf;
3094         t = parse_time_or_die("force_key_frames", p, 1);
3095         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3096     }
3097 }
3098
3099 static uint8_t *get_line(AVIOContext *s)
3100 {
3101     AVIOContext *line;
3102     uint8_t *buf;
3103     char c;
3104
3105     if (avio_open_dyn_buf(&line) < 0) {
3106         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3107         exit_program(1);
3108     }
3109
3110     while ((c = avio_r8(s)) && c != '\n')
3111         avio_w8(line, c);
3112     avio_w8(line, 0);
3113     avio_close_dyn_buf(line, &buf);
3114
3115     return buf;
3116 }
3117
3118 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3119 {
3120     int i, ret = 1;
3121     char filename[1000];
3122     const char *base[3] = { getenv("AVCONV_DATADIR"),
3123                             getenv("HOME"),
3124                             AVCONV_DATADIR,
3125                             };
3126
3127     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3128         if (!base[i])
3129             continue;
3130         if (codec_name) {
3131             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3132                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3133             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3134         }
3135         if (ret) {
3136             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3137                      i != 1 ? "" : "/.avconv", preset_name);
3138             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3139         }
3140     }
3141     return ret;
3142 }
3143
3144 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3145 {
3146     char *codec_name = NULL;
3147
3148     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3149     if (!codec_name) {
3150         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3151                                                   NULL, ost->st->codec->codec_type);
3152         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3153     } else if (!strcmp(codec_name, "copy"))
3154         ost->stream_copy = 1;
3155     else {
3156         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3157         ost->st->codec->codec_id = ost->enc->id;
3158     }
3159 }
3160
3161 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3162 {
3163     OutputStream *ost;
3164     AVStream *st = avformat_new_stream(oc, NULL);
3165     int idx      = oc->nb_streams - 1, ret = 0;
3166     char *bsf = NULL, *next, *codec_tag = NULL;
3167     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3168     double qscale = -1;
3169     char *buf = NULL, *arg = NULL, *preset = NULL;
3170     AVIOContext *s = NULL;
3171
3172     if (!st) {
3173         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3174         exit_program(1);
3175     }
3176
3177     if (oc->nb_streams - 1 < o->nb_streamid_map)
3178         st->id = o->streamid_map[oc->nb_streams - 1];
3179
3180     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3181                                 nb_output_streams + 1);
3182     ost = &output_streams[nb_output_streams - 1];
3183     ost->file_index = nb_output_files;
3184     ost->index = idx;
3185     ost->st    = st;
3186     st->codec->codec_type = type;
3187     choose_encoder(o, oc, ost);
3188     if (ost->enc) {
3189         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3190     }
3191
3192     avcodec_get_context_defaults3(st->codec, ost->enc);
3193     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3194
3195     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3196     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3197         do  {
3198             buf = get_line(s);
3199             if (!buf[0] || buf[0] == '#') {
3200                 av_free(buf);
3201                 continue;
3202             }
3203             if (!(arg = strchr(buf, '='))) {
3204                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3205                 exit_program(1);
3206             }
3207             *arg++ = 0;
3208             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3209             av_free(buf);
3210         } while (!s->eof_reached);
3211         avio_close(s);
3212     }
3213     if (ret) {
3214         av_log(NULL, AV_LOG_FATAL,
3215                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3216                preset, ost->file_index, ost->index);
3217         exit_program(1);
3218     }
3219
3220     ost->max_frames = INT64_MAX;
3221     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3222
3223     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3224     while (bsf) {
3225         if (next = strchr(bsf, ','))
3226             *next++ = 0;
3227         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3228             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3229             exit_program(1);
3230         }
3231         if (bsfc_prev)
3232             bsfc_prev->next = bsfc;
3233         else
3234             ost->bitstream_filters = bsfc;
3235
3236         bsfc_prev = bsfc;
3237         bsf       = next;
3238     }
3239
3240     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3241     if (codec_tag) {
3242         uint32_t tag = strtol(codec_tag, &next, 0);
3243         if (*next)
3244             tag = AV_RL32(codec_tag);
3245         st->codec->codec_tag = tag;
3246     }
3247
3248     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3249     if (qscale >= 0 || same_quant) {
3250         st->codec->flags |= CODEC_FLAG_QSCALE;
3251         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3252     }
3253
3254     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3255         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3256
3257     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3258     return ost;
3259 }
3260
3261 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3262 {
3263     int i;
3264     const char *p = str;
3265     for(i = 0;; i++) {
3266         dest[i] = atoi(p);
3267         if(i == 63)
3268             break;
3269         p = strchr(p, ',');
3270         if(!p) {
3271             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3272             exit_program(1);
3273         }
3274         p++;
3275     }
3276 }
3277
3278 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3279 {
3280     AVStream *st;
3281     OutputStream *ost;
3282     AVCodecContext *video_enc;
3283
3284     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3285     st  = ost->st;
3286     video_enc = st->codec;
3287
3288     if (!ost->stream_copy) {
3289         const char *p = NULL;
3290         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3291         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3292         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3293         int i;
3294
3295         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3296         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3297             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3298             exit_program(1);
3299         }
3300
3301         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3302         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3303             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3304             exit_program(1);
3305         }
3306
3307         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3308         if (frame_aspect_ratio)
3309             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3310
3311         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3312         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3313             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3314             exit_program(1);
3315         }
3316         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3317
3318         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3319         if (intra_matrix) {
3320             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3321                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3322                 exit_program(1);
3323             }
3324             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3325         }
3326         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3327         if (inter_matrix) {
3328             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3329                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3330                 exit_program(1);
3331             }
3332             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3333         }
3334
3335         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3336         for(i=0; p; i++){
3337             int start, end, q;
3338             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3339             if(e!=3){
3340                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3341                 exit_program(1);
3342             }
3343             video_enc->rc_override=
3344                 av_realloc(video_enc->rc_override,
3345                            sizeof(RcOverride)*(i+1));
3346             video_enc->rc_override[i].start_frame= start;
3347             video_enc->rc_override[i].end_frame  = end;
3348             if(q>0){
3349                 video_enc->rc_override[i].qscale= q;
3350                 video_enc->rc_override[i].quality_factor= 1.0;
3351             }
3352             else{
3353                 video_enc->rc_override[i].qscale= 0;
3354                 video_enc->rc_override[i].quality_factor= -q/100.0;
3355             }
3356             p= strchr(p, '/');
3357             if(p) p++;
3358         }
3359         video_enc->rc_override_count=i;
3360         if (!video_enc->rc_initial_buffer_occupancy)
3361             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3362         video_enc->intra_dc_precision= intra_dc_precision - 8;
3363
3364         /* two pass mode */
3365         if (do_pass) {
3366             if (do_pass == 1) {
3367                 video_enc->flags |= CODEC_FLAG_PASS1;
3368             } else {
3369                 video_enc->flags |= CODEC_FLAG_PASS2;
3370             }
3371         }
3372
3373         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3374         if (forced_key_frames)
3375             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3376
3377         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3378
3379         ost->top_field_first = -1;
3380         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3381
3382         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3383
3384 #if CONFIG_AVFILTER
3385         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3386         if (filters)
3387             ost->avfilter = av_strdup(filters);
3388 #endif
3389     }
3390
3391     return ost;
3392 }
3393
3394 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3395 {
3396     AVStream *st;
3397     OutputStream *ost;
3398     AVCodecContext *audio_enc;
3399
3400     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3401     st  = ost->st;
3402
3403     audio_enc = st->codec;
3404     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3405
3406     if (!ost->stream_copy) {
3407         char *sample_fmt = NULL;
3408
3409         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3410
3411         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3412         if (sample_fmt &&
3413             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3414             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3415             exit_program(1);
3416         }
3417
3418         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3419     }
3420
3421     return ost;
3422 }
3423
3424 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3425 {
3426     OutputStream *ost;
3427
3428     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3429     if (!ost->stream_copy) {
3430         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3431         exit_program(1);
3432     }
3433
3434     return ost;
3435 }
3436
3437 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3438 {
3439     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3440     ost->stream_copy = 1;
3441     return ost;
3442 }
3443
3444 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3445 {
3446     AVStream *st;
3447     OutputStream *ost;
3448     AVCodecContext *subtitle_enc;
3449
3450     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3451     st  = ost->st;
3452     subtitle_enc = st->codec;
3453
3454     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3455
3456     return ost;
3457 }
3458
3459 /* arg format is "output-stream-index:streamid-value". */
3460 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3461 {
3462     int idx;
3463     char *p;
3464     char idx_str[16];
3465
3466     av_strlcpy(idx_str, arg, sizeof(idx_str));
3467     p = strchr(idx_str, ':');
3468     if (!p) {
3469         av_log(NULL, AV_LOG_FATAL,
3470                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3471                arg, opt);
3472         exit_program(1);
3473     }
3474     *p++ = '\0';
3475     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3476     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3477     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3478     return 0;
3479 }
3480
3481 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3482 {
3483     AVFormatContext *is = ifile->ctx;
3484     AVFormatContext *os = ofile->ctx;
3485     int i;
3486
3487     for (i = 0; i < is->nb_chapters; i++) {
3488         AVChapter *in_ch = is->chapters[i], *out_ch;
3489         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3490                                       AV_TIME_BASE_Q, in_ch->time_base);
3491         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3492                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3493
3494
3495         if (in_ch->end < ts_off)
3496             continue;
3497         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3498             break;
3499
3500         out_ch = av_mallocz(sizeof(AVChapter));
3501         if (!out_ch)
3502             return AVERROR(ENOMEM);
3503
3504         out_ch->id        = in_ch->id;
3505         out_ch->time_base = in_ch->time_base;
3506         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3507         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3508
3509         if (copy_metadata)
3510             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3511
3512         os->nb_chapters++;
3513         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3514         if (!os->chapters)
3515             return AVERROR(ENOMEM);
3516         os->chapters[os->nb_chapters - 1] = out_ch;
3517     }
3518     return 0;
3519 }
3520
3521 static void opt_output_file(void *optctx, const char *filename)
3522 {
3523     OptionsContext *o = optctx;
3524     AVFormatContext *oc;
3525     int i, err;
3526     AVOutputFormat *file_oformat;
3527     OutputStream *ost;
3528     InputStream  *ist;
3529
3530     if (!strcmp(filename, "-"))
3531         filename = "pipe:";
3532
3533     oc = avformat_alloc_context();
3534     if (!oc) {
3535         print_error(filename, AVERROR(ENOMEM));
3536         exit_program(1);
3537     }
3538
3539     if (o->format) {
3540         file_oformat = av_guess_format(o->format, NULL, NULL);
3541         if (!file_oformat) {
3542             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3543             exit_program(1);
3544         }
3545     } else {
3546         file_oformat = av_guess_format(NULL, filename, NULL);
3547         if (!file_oformat) {
3548             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3549                    filename);
3550             exit_program(1);
3551         }
3552     }
3553
3554     oc->oformat = file_oformat;
3555     oc->interrupt_callback = int_cb;
3556     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3557
3558     if (!o->nb_stream_maps) {
3559         /* pick the "best" stream of each type */
3560 #define NEW_STREAM(type, index)\
3561         if (index >= 0) {\
3562             ost = new_ ## type ## _stream(o, oc);\
3563             ost->source_index = index;\
3564             ost->sync_ist     = &input_streams[index];\
3565             input_streams[index].discard = 0;\
3566         }
3567
3568         /* video: highest resolution */
3569         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3570             int area = 0, idx = -1;
3571             for (i = 0; i < nb_input_streams; i++) {
3572                 ist = &input_streams[i];
3573                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3574                     ist->st->codec->width * ist->st->codec->height > area) {
3575                     area = ist->st->codec->width * ist->st->codec->height;
3576                     idx = i;
3577                 }
3578             }
3579             NEW_STREAM(video, idx);
3580         }
3581
3582         /* audio: most channels */
3583         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3584             int channels = 0, idx = -1;
3585             for (i = 0; i < nb_input_streams; i++) {
3586                 ist = &input_streams[i];
3587                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3588                     ist->st->codec->channels > channels) {
3589                     channels = ist->st->codec->channels;
3590                     idx = i;
3591                 }
3592             }
3593             NEW_STREAM(audio, idx);
3594         }
3595
3596         /* subtitles: pick first */
3597         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3598             for (i = 0; i < nb_input_streams; i++)
3599                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3600                     NEW_STREAM(subtitle, i);
3601                     break;
3602                 }
3603         }
3604         /* do something with data? */
3605     } else {
3606         for (i = 0; i < o->nb_stream_maps; i++) {
3607             StreamMap *map = &o->stream_maps[i];
3608
3609             if (map->disabled)
3610                 continue;
3611
3612             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3613             switch (ist->st->codec->codec_type) {
3614             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3615             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3616             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3617             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3618             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3619             default:
3620                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
3621                        map->file_index, map->stream_index);
3622                 exit_program(1);
3623             }
3624
3625             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3626             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3627                                            map->sync_stream_index];
3628             ist->discard = 0;
3629         }
3630     }
3631
3632     /* handle attached files */
3633     for (i = 0; i < o->nb_attachments; i++) {
3634         AVIOContext *pb;
3635         uint8_t *attachment;
3636         const char *p;
3637         int64_t len;
3638
3639         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
3640             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
3641                    o->attachments[i]);
3642             exit_program(1);
3643         }
3644         if ((len = avio_size(pb)) <= 0) {
3645             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
3646                    o->attachments[i]);
3647             exit_program(1);
3648         }
3649         if (!(attachment = av_malloc(len))) {
3650             av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
3651                    o->attachments[i]);
3652             exit_program(1);
3653         }
3654         avio_read(pb, attachment, len);
3655
3656         ost = new_attachment_stream(o, oc);
3657         ost->stream_copy               = 0;
3658         ost->source_index              = -1;
3659         ost->attachment_filename       = o->attachments[i];
3660         ost->st->codec->extradata      = attachment;
3661         ost->st->codec->extradata_size = len;
3662
3663         p = strrchr(o->attachments[i], '/');
3664         av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
3665         avio_close(pb);
3666     }
3667
3668     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3669     output_files[nb_output_files - 1].ctx       = oc;
3670     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3671     output_files[nb_output_files - 1].recording_time = o->recording_time;
3672     output_files[nb_output_files - 1].start_time     = o->start_time;
3673     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3674     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3675
3676     /* check filename in case of an image number is expected */
3677     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3678         if (!av_filename_number_test(oc->filename)) {
3679             print_error(oc->filename, AVERROR(EINVAL));
3680             exit_program(1);
3681         }
3682     }
3683
3684     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3685         /* test if it already exists to avoid losing precious files */
3686         assert_file_overwrite(filename);
3687
3688         /* open the file */
3689         if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
3690                               &oc->interrupt_callback,
3691                               &output_files[nb_output_files - 1].opts)) < 0) {
3692             print_error(filename, err);
3693             exit_program(1);
3694         }
3695     }
3696
3697     if (o->mux_preload) {
3698         uint8_t buf[64];