avconv: split video transcoding out of output_packet().
[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;
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 static void *samples;
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
143
144 typedef struct InputStream {
145     int file_index;
146     AVStream *st;
147     int discard;             /* true if stream data should be discarded */
148     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
149     AVCodec *dec;
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         av_close_input_file(input_files[i].ctx);
527     }
528     for (i = 0; i < nb_input_streams; i++)
529         av_dict_free(&input_streams[i].opts);
530
531     if (vstats_file)
532         fclose(vstats_file);
533     av_free(vstats_filename);
534
535     av_freep(&input_streams);
536     av_freep(&input_files);
537     av_freep(&output_streams);
538     av_freep(&output_files);
539
540     uninit_opts();
541     av_free(audio_buf);
542     av_free(audio_out);
543     allocated_audio_buf_size= allocated_audio_out_size= 0;
544     av_free(samples);
545
546 #if CONFIG_AVFILTER
547     avfilter_uninit();
548 #endif
549     avformat_network_deinit();
550
551     if (received_sigterm) {
552         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
553                (int) received_sigterm);
554         exit (255);
555     }
556
557     exit(ret); /* not all OS-es handle main() return value */
558 }
559
560 static void assert_avoptions(AVDictionary *m)
561 {
562     AVDictionaryEntry *t;
563     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
564         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
565         exit_program(1);
566     }
567 }
568
569 static void assert_codec_experimental(AVCodecContext *c, int encoder)
570 {
571     const char *codec_string = encoder ? "encoder" : "decoder";
572     AVCodec *codec;
573     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
574         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
575         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
576                 "results.\nAdd '-strict experimental' if you want to use it.\n",
577                 codec_string, c->codec->name);
578         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
579         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
580             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
581                    codec_string, codec->name);
582         exit_program(1);
583     }
584 }
585
586 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
587 {
588     if(codec && codec->sample_fmts){
589         const enum AVSampleFormat *p= codec->sample_fmts;
590         for(; *p!=-1; p++){
591             if(*p == st->codec->sample_fmt)
592                 break;
593         }
594         if (*p == -1) {
595             av_log(NULL, AV_LOG_WARNING,
596                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
597                    av_get_sample_fmt_name(st->codec->sample_fmt),
598                    codec->name,
599                    av_get_sample_fmt_name(codec->sample_fmts[0]));
600             st->codec->sample_fmt = codec->sample_fmts[0];
601         }
602     }
603 }
604
605 /**
606  * Update the requested input sample format based on the output sample format.
607  * This is currently only used to request float output from decoders which
608  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
609  * Ideally this will be removed in the future when decoders do not do format
610  * conversion and only output in their native format.
611  */
612 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
613                               AVCodecContext *enc)
614 {
615     /* if sample formats match or a decoder sample format has already been
616        requested, just return */
617     if (enc->sample_fmt == dec->sample_fmt ||
618         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
619         return;
620
621     /* if decoder supports more than one output format */
622     if (dec_codec && dec_codec->sample_fmts &&
623         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
624         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
625         const enum AVSampleFormat *p;
626         int min_dec = -1, min_inc = -1;
627
628         /* find a matching sample format in the encoder */
629         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
630             if (*p == enc->sample_fmt) {
631                 dec->request_sample_fmt = *p;
632                 return;
633             } else if (*p > enc->sample_fmt) {
634                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
635             } else
636                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
637         }
638
639         /* if none match, provide the one that matches quality closest */
640         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
641                                   enc->sample_fmt - min_dec;
642     }
643 }
644
645 static void choose_sample_rate(AVStream *st, AVCodec *codec)
646 {
647     if(codec && codec->supported_samplerates){
648         const int *p= codec->supported_samplerates;
649         int best=0;
650         int best_dist=INT_MAX;
651         for(; *p; p++){
652             int dist= abs(st->codec->sample_rate - *p);
653             if(dist < best_dist){
654                 best_dist= dist;
655                 best= *p;
656             }
657         }
658         if(best_dist){
659             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
660         }
661         st->codec->sample_rate= best;
662     }
663 }
664
665 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
666 {
667     if(codec && codec->pix_fmts){
668         const enum PixelFormat *p= codec->pix_fmts;
669         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
670             if(st->codec->codec_id==CODEC_ID_MJPEG){
671                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
672             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
673                 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};
674             }
675         }
676         for(; *p!=-1; p++){
677             if(*p == st->codec->pix_fmt)
678                 break;
679         }
680         if (*p == -1) {
681             if(st->codec->pix_fmt != PIX_FMT_NONE)
682                 av_log(NULL, AV_LOG_WARNING,
683                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
684                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
685                         codec->name,
686                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
687             st->codec->pix_fmt = codec->pix_fmts[0];
688         }
689     }
690 }
691
692 static double
693 get_sync_ipts(const OutputStream *ost)
694 {
695     const InputStream *ist = ost->sync_ist;
696     OutputFile *of = &output_files[ost->file_index];
697     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
698 }
699
700 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
701     int ret;
702
703     while(bsfc){
704         AVPacket new_pkt= *pkt;
705         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
706                                           &new_pkt.data, &new_pkt.size,
707                                           pkt->data, pkt->size,
708                                           pkt->flags & AV_PKT_FLAG_KEY);
709         if(a>0){
710             av_free_packet(pkt);
711             new_pkt.destruct= av_destruct_packet;
712         } else if(a<0){
713             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
714                    bsfc->filter->name, pkt->stream_index,
715                    avctx->codec ? avctx->codec->name : "copy");
716             print_error("", a);
717             if (exit_on_error)
718                 exit_program(1);
719         }
720         *pkt= new_pkt;
721
722         bsfc= bsfc->next;
723     }
724
725     ret= av_interleaved_write_frame(s, pkt);
726     if(ret < 0){
727         print_error("av_interleaved_write_frame()", ret);
728         exit_program(1);
729     }
730 }
731
732 static void do_audio_out(AVFormatContext *s,
733                          OutputStream *ost,
734                          InputStream *ist,
735                          unsigned char *buf, int size)
736 {
737     uint8_t *buftmp;
738     int64_t audio_out_size, audio_buf_size;
739     int64_t allocated_for_size= size;
740
741     int size_out, frame_bytes, ret, resample_changed;
742     AVCodecContext *enc= ost->st->codec;
743     AVCodecContext *dec= ist->st->codec;
744     int osize = av_get_bytes_per_sample(enc->sample_fmt);
745     int isize = av_get_bytes_per_sample(dec->sample_fmt);
746     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
747
748 need_realloc:
749     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
750     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
751     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
752     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
753     audio_buf_size*= osize*enc->channels;
754
755     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
756     if(coded_bps > 8*osize)
757         audio_out_size= audio_out_size * coded_bps / (8*osize);
758     audio_out_size += FF_MIN_BUFFER_SIZE;
759
760     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
761         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
762         exit_program(1);
763     }
764
765     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
766     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
767     if (!audio_buf || !audio_out){
768         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
769         exit_program(1);
770     }
771
772     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
773         ost->audio_resample = 1;
774
775     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
776                        ost->resample_channels    != dec->channels   ||
777                        ost->resample_sample_rate != dec->sample_rate;
778
779     if ((ost->audio_resample && !ost->resample) || resample_changed) {
780         if (resample_changed) {
781             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",
782                    ist->file_index, ist->st->index,
783                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
784                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
785             ost->resample_sample_fmt  = dec->sample_fmt;
786             ost->resample_channels    = dec->channels;
787             ost->resample_sample_rate = dec->sample_rate;
788             if (ost->resample)
789                 audio_resample_close(ost->resample);
790         }
791         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
792         if (audio_sync_method <= 1 &&
793             ost->resample_sample_fmt  == enc->sample_fmt &&
794             ost->resample_channels    == enc->channels   &&
795             ost->resample_sample_rate == enc->sample_rate) {
796             ost->resample = NULL;
797             ost->audio_resample = 0;
798         } else if (ost->audio_resample) {
799             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
800                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
801             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
802                                                    enc->sample_rate, dec->sample_rate,
803                                                    enc->sample_fmt,  dec->sample_fmt,
804                                                    16, 10, 0, 0.8);
805             if (!ost->resample) {
806                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
807                        dec->channels, dec->sample_rate,
808                        enc->channels, enc->sample_rate);
809                 exit_program(1);
810             }
811         }
812     }
813
814 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
815     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
816         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
817         if (ost->reformat_ctx)
818             av_audio_convert_free(ost->reformat_ctx);
819         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
820                                                    dec->sample_fmt, 1, NULL, 0);
821         if (!ost->reformat_ctx) {
822             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
823                    av_get_sample_fmt_name(dec->sample_fmt),
824                    av_get_sample_fmt_name(enc->sample_fmt));
825             exit_program(1);
826         }
827         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
828     }
829
830     if(audio_sync_method){
831         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
832                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
833         double idelta= delta*dec->sample_rate / enc->sample_rate;
834         int byte_delta= ((int)idelta)*2*dec->channels;
835
836         //FIXME resample delay
837         if(fabs(delta) > 50){
838             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
839                 if(byte_delta < 0){
840                     byte_delta= FFMAX(byte_delta, -size);
841                     size += byte_delta;
842                     buf  -= byte_delta;
843                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
844                     if(!size)
845                         return;
846                     ist->is_start=0;
847                 }else{
848                     static uint8_t *input_tmp= NULL;
849                     input_tmp= av_realloc(input_tmp, byte_delta + size);
850
851                     if(byte_delta > allocated_for_size - size){
852                         allocated_for_size= byte_delta + (int64_t)size;
853                         goto need_realloc;
854                     }
855                     ist->is_start=0;
856
857                     memset(input_tmp, 0, byte_delta);
858                     memcpy(input_tmp + byte_delta, buf, size);
859                     buf= input_tmp;
860                     size += byte_delta;
861                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
862                 }
863             }else if(audio_sync_method>1){
864                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
865                 av_assert0(ost->audio_resample);
866                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
867                        delta, comp, enc->sample_rate);
868 //                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));
869                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
870             }
871         }
872     }else
873         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
874                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
875
876     if (ost->audio_resample) {
877         buftmp = audio_buf;
878         size_out = audio_resample(ost->resample,
879                                   (short *)buftmp, (short *)buf,
880                                   size / (dec->channels * isize));
881         size_out = size_out * enc->channels * osize;
882     } else {
883         buftmp = buf;
884         size_out = size;
885     }
886
887     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
888         const void *ibuf[6]= {buftmp};
889         void *obuf[6]= {audio_buf};
890         int istride[6]= {isize};
891         int ostride[6]= {osize};
892         int len= size_out/istride[0];
893         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
894             printf("av_audio_convert() failed\n");
895             if (exit_on_error)
896                 exit_program(1);
897             return;
898         }
899         buftmp = audio_buf;
900         size_out = len*osize;
901     }
902
903     /* now encode as many frames as possible */
904     if (enc->frame_size > 1) {
905         /* output resampled raw samples */
906         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
907             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
908             exit_program(1);
909         }
910         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
911
912         frame_bytes = enc->frame_size * osize * enc->channels;
913
914         while (av_fifo_size(ost->fifo) >= frame_bytes) {
915             AVPacket pkt;
916             av_init_packet(&pkt);
917
918             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
919
920             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
921
922             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
923                                        (short *)audio_buf);
924             if (ret < 0) {
925                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
926                 exit_program(1);
927             }
928             audio_size += ret;
929             pkt.stream_index= ost->index;
930             pkt.data= audio_out;
931             pkt.size= ret;
932             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
933                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
934             pkt.flags |= AV_PKT_FLAG_KEY;
935             write_frame(s, &pkt, enc, ost->bitstream_filters);
936
937             ost->sync_opts += enc->frame_size;
938         }
939     } else {
940         AVPacket pkt;
941         av_init_packet(&pkt);
942
943         ost->sync_opts += size_out / (osize * enc->channels);
944
945         /* output a pcm frame */
946         /* determine the size of the coded buffer */
947         size_out /= osize;
948         if (coded_bps)
949             size_out = size_out*coded_bps/8;
950
951         if(size_out > audio_out_size){
952             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
953             exit_program(1);
954         }
955
956         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
957         ret = avcodec_encode_audio(enc, audio_out, size_out,
958                                    (short *)buftmp);
959         if (ret < 0) {
960             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
961             exit_program(1);
962         }
963         audio_size += ret;
964         pkt.stream_index= ost->index;
965         pkt.data= audio_out;
966         pkt.size= ret;
967         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
968             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
969         pkt.flags |= AV_PKT_FLAG_KEY;
970         write_frame(s, &pkt, enc, ost->bitstream_filters);
971     }
972 }
973
974 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
975 {
976     AVCodecContext *dec;
977     AVPicture *picture2;
978     AVPicture picture_tmp;
979     uint8_t *buf = 0;
980
981     dec = ist->st->codec;
982
983     /* deinterlace : must be done before any resize */
984     if (do_deinterlace) {
985         int size;
986
987         /* create temporary picture */
988         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
989         buf = av_malloc(size);
990         if (!buf)
991             return;
992
993         picture2 = &picture_tmp;
994         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
995
996         if(avpicture_deinterlace(picture2, picture,
997                                  dec->pix_fmt, dec->width, dec->height) < 0) {
998             /* if error, do not deinterlace */
999             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1000             av_free(buf);
1001             buf = NULL;
1002             picture2 = picture;
1003         }
1004     } else {
1005         picture2 = picture;
1006     }
1007
1008     if (picture != picture2)
1009         *picture = *picture2;
1010     *bufp = buf;
1011 }
1012
1013 static void do_subtitle_out(AVFormatContext *s,
1014                             OutputStream *ost,
1015                             InputStream *ist,
1016                             AVSubtitle *sub,
1017                             int64_t pts)
1018 {
1019     static uint8_t *subtitle_out = NULL;
1020     int subtitle_out_max_size = 1024 * 1024;
1021     int subtitle_out_size, nb, i;
1022     AVCodecContext *enc;
1023     AVPacket pkt;
1024
1025     if (pts == AV_NOPTS_VALUE) {
1026         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1027         if (exit_on_error)
1028             exit_program(1);
1029         return;
1030     }
1031
1032     enc = ost->st->codec;
1033
1034     if (!subtitle_out) {
1035         subtitle_out = av_malloc(subtitle_out_max_size);
1036     }
1037
1038     /* Note: DVB subtitle need one packet to draw them and one other
1039        packet to clear them */
1040     /* XXX: signal it in the codec context ? */
1041     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1042         nb = 2;
1043     else
1044         nb = 1;
1045
1046     for(i = 0; i < nb; i++) {
1047         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1048         // start_display_time is required to be 0
1049         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1050         sub->end_display_time -= sub->start_display_time;
1051         sub->start_display_time = 0;
1052         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1053                                                     subtitle_out_max_size, sub);
1054         if (subtitle_out_size < 0) {
1055             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1056             exit_program(1);
1057         }
1058
1059         av_init_packet(&pkt);
1060         pkt.stream_index = ost->index;
1061         pkt.data = subtitle_out;
1062         pkt.size = subtitle_out_size;
1063         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1064         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1065             /* XXX: the pts correction is handled here. Maybe handling
1066                it in the codec would be better */
1067             if (i == 0)
1068                 pkt.pts += 90 * sub->start_display_time;
1069             else
1070                 pkt.pts += 90 * sub->end_display_time;
1071         }
1072         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1073     }
1074 }
1075
1076 static int bit_buffer_size= 1024*256;
1077 static uint8_t *bit_buffer= NULL;
1078
1079 static void do_video_resample(OutputStream *ost,
1080                               InputStream *ist,
1081                               AVFrame *in_picture,
1082                               AVFrame **out_picture)
1083 {
1084     int resample_changed = 0;
1085     AVCodecContext *dec = ist->st->codec;
1086     *out_picture = in_picture;
1087
1088     resample_changed = ost->resample_width   != dec->width  ||
1089                        ost->resample_height  != dec->height ||
1090                        ost->resample_pix_fmt != dec->pix_fmt;
1091
1092     if (resample_changed) {
1093         av_log(NULL, AV_LOG_INFO,
1094                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1095                ist->file_index, ist->st->index,
1096                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1097                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1098         if(!ost->video_resample)
1099             ost->video_resample = 1;
1100     }
1101
1102 #if !CONFIG_AVFILTER
1103     if (ost->video_resample) {
1104         *out_picture = &ost->pict_tmp;
1105         if (resample_changed) {
1106             /* initialize a new scaler context */
1107             sws_freeContext(ost->img_resample_ctx);
1108             ost->img_resample_ctx = sws_getContext(
1109                 ist->st->codec->width,
1110                 ist->st->codec->height,
1111                 ist->st->codec->pix_fmt,
1112                 ost->st->codec->width,
1113                 ost->st->codec->height,
1114                 ost->st->codec->pix_fmt,
1115                 ost->sws_flags, NULL, NULL, NULL);
1116             if (ost->img_resample_ctx == NULL) {
1117                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1118                 exit_program(1);
1119             }
1120         }
1121         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1122               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1123     }
1124 #else
1125     if (resample_changed) {
1126         avfilter_graph_free(&ost->graph);
1127         if (configure_video_filters(ist, ost)) {
1128             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1129             exit_program(1);
1130         }
1131     }
1132 #endif
1133     if (resample_changed) {
1134         ost->resample_width   = dec->width;
1135         ost->resample_height  = dec->height;
1136         ost->resample_pix_fmt = dec->pix_fmt;
1137     }
1138 }
1139
1140
1141 static void do_video_out(AVFormatContext *s,
1142                          OutputStream *ost,
1143                          InputStream *ist,
1144                          AVFrame *in_picture,
1145                          int *frame_size, float quality)
1146 {
1147     int nb_frames, i, ret, format_video_sync;
1148     AVFrame *final_picture;
1149     AVCodecContext *enc;
1150     double sync_ipts;
1151
1152     enc = ost->st->codec;
1153
1154     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1155
1156     /* by default, we output a single frame */
1157     nb_frames = 1;
1158
1159     *frame_size = 0;
1160
1161     format_video_sync = video_sync_method;
1162     if (format_video_sync < 0)
1163         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1164
1165     if (format_video_sync) {
1166         double vdelta = sync_ipts - ost->sync_opts;
1167         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1168         if (vdelta < -1.1)
1169             nb_frames = 0;
1170         else if (format_video_sync == 2) {
1171             if(vdelta<=-0.6){
1172                 nb_frames=0;
1173             }else if(vdelta>0.6)
1174                 ost->sync_opts= lrintf(sync_ipts);
1175         }else if (vdelta > 1.1)
1176             nb_frames = lrintf(vdelta);
1177 //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);
1178         if (nb_frames == 0){
1179             ++nb_frames_drop;
1180             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1181         }else if (nb_frames > 1) {
1182             nb_frames_dup += nb_frames - 1;
1183             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1184         }
1185     }else
1186         ost->sync_opts= lrintf(sync_ipts);
1187
1188     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1189     if (nb_frames <= 0)
1190         return;
1191
1192     do_video_resample(ost, ist, in_picture, &final_picture);
1193
1194     /* duplicates frame if needed */
1195     for(i=0;i<nb_frames;i++) {
1196         AVPacket pkt;
1197         av_init_packet(&pkt);
1198         pkt.stream_index= ost->index;
1199
1200         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1201             /* raw pictures are written as AVPicture structure to
1202                avoid any copies. We support temporarily the older
1203                method. */
1204             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1205             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1206             pkt.data= (uint8_t *)final_picture;
1207             pkt.size=  sizeof(AVPicture);
1208             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1209             pkt.flags |= AV_PKT_FLAG_KEY;
1210
1211             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1212         } else {
1213             AVFrame big_picture;
1214
1215             big_picture= *final_picture;
1216             /* better than nothing: use input picture interlaced
1217                settings */
1218             big_picture.interlaced_frame = in_picture->interlaced_frame;
1219             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1220                 if (ost->top_field_first == -1)
1221                     big_picture.top_field_first = in_picture->top_field_first;
1222                 else
1223                     big_picture.top_field_first = !!ost->top_field_first;
1224             }
1225
1226             /* handles same_quant here. This is not correct because it may
1227                not be a global option */
1228             big_picture.quality = quality;
1229             if (!enc->me_threshold)
1230                 big_picture.pict_type = 0;
1231 //            big_picture.pts = AV_NOPTS_VALUE;
1232             big_picture.pts= ost->sync_opts;
1233 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1234 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1235             if (ost->forced_kf_index < ost->forced_kf_count &&
1236                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1237                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1238                 ost->forced_kf_index++;
1239             }
1240             ret = avcodec_encode_video(enc,
1241                                        bit_buffer, bit_buffer_size,
1242                                        &big_picture);
1243             if (ret < 0) {
1244                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1245                 exit_program(1);
1246             }
1247
1248             if(ret>0){
1249                 pkt.data= bit_buffer;
1250                 pkt.size= ret;
1251                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1252                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1253 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1254    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1255    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1256
1257                 if(enc->coded_frame->key_frame)
1258                     pkt.flags |= AV_PKT_FLAG_KEY;
1259                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1260                 *frame_size = ret;
1261                 video_size += ret;
1262                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1263                 //        enc->frame_number-1, ret, enc->pict_type);
1264                 /* if two pass, output log */
1265                 if (ost->logfile && enc->stats_out) {
1266                     fprintf(ost->logfile, "%s", enc->stats_out);
1267                 }
1268             }
1269         }
1270         ost->sync_opts++;
1271         ost->frame_number++;
1272     }
1273 }
1274
1275 static double psnr(double d){
1276     return -10.0*log(d)/log(10.0);
1277 }
1278
1279 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1280                            int frame_size)
1281 {
1282     AVCodecContext *enc;
1283     int frame_number;
1284     double ti1, bitrate, avg_bitrate;
1285
1286     /* this is executed just the first time do_video_stats is called */
1287     if (!vstats_file) {
1288         vstats_file = fopen(vstats_filename, "w");
1289         if (!vstats_file) {
1290             perror("fopen");
1291             exit_program(1);
1292         }
1293     }
1294
1295     enc = ost->st->codec;
1296     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1297         frame_number = ost->frame_number;
1298         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1299         if (enc->flags&CODEC_FLAG_PSNR)
1300             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1301
1302         fprintf(vstats_file,"f_size= %6d ", frame_size);
1303         /* compute pts value */
1304         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1305         if (ti1 < 0.01)
1306             ti1 = 0.01;
1307
1308         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1309         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1310         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1311             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1312         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1313     }
1314 }
1315
1316 static void print_report(OutputFile *output_files,
1317                          OutputStream *ost_table, int nb_ostreams,
1318                          int is_last_report, int64_t timer_start)
1319 {
1320     char buf[1024];
1321     OutputStream *ost;
1322     AVFormatContext *oc;
1323     int64_t total_size;
1324     AVCodecContext *enc;
1325     int frame_number, vid, i;
1326     double bitrate, ti1, pts;
1327     static int64_t last_time = -1;
1328     static int qp_histogram[52];
1329
1330     if (!print_stats && !is_last_report)
1331         return;
1332
1333     if (!is_last_report) {
1334         int64_t cur_time;
1335         /* display the report every 0.5 seconds */
1336         cur_time = av_gettime();
1337         if (last_time == -1) {
1338             last_time = cur_time;
1339             return;
1340         }
1341         if ((cur_time - last_time) < 500000)
1342             return;
1343         last_time = cur_time;
1344     }
1345
1346
1347     oc = output_files[0].ctx;
1348
1349     total_size = avio_size(oc->pb);
1350     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1351         total_size= avio_tell(oc->pb);
1352
1353     buf[0] = '\0';
1354     ti1 = 1e10;
1355     vid = 0;
1356     for(i=0;i<nb_ostreams;i++) {
1357         float q = -1;
1358         ost = &ost_table[i];
1359         enc = ost->st->codec;
1360         if (!ost->stream_copy && enc->coded_frame)
1361             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1362         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1363             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1364         }
1365         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1366             float t = (av_gettime()-timer_start) / 1000000.0;
1367
1368             frame_number = ost->frame_number;
1369             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1370                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1371             if(is_last_report)
1372                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1373             if(qp_hist){
1374                 int j;
1375                 int qp = lrintf(q);
1376                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1377                     qp_histogram[qp]++;
1378                 for(j=0; j<32; j++)
1379                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1380             }
1381             if (enc->flags&CODEC_FLAG_PSNR){
1382                 int j;
1383                 double error, error_sum=0;
1384                 double scale, scale_sum=0;
1385                 char type[3]= {'Y','U','V'};
1386                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1387                 for(j=0; j<3; j++){
1388                     if(is_last_report){
1389                         error= enc->error[j];
1390                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1391                     }else{
1392                         error= enc->coded_frame->error[j];
1393                         scale= enc->width*enc->height*255.0*255.0;
1394                     }
1395                     if(j) scale/=4;
1396                     error_sum += error;
1397                     scale_sum += scale;
1398                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1399                 }
1400                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1401             }
1402             vid = 1;
1403         }
1404         /* compute min output value */
1405         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1406         if ((pts < ti1) && (pts > 0))
1407             ti1 = pts;
1408     }
1409     if (ti1 < 0.01)
1410         ti1 = 0.01;
1411
1412     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1413
1414     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1415             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1416             (double)total_size / 1024, ti1, bitrate);
1417
1418     if (nb_frames_dup || nb_frames_drop)
1419         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1420                 nb_frames_dup, nb_frames_drop);
1421
1422     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1423
1424     fflush(stderr);
1425
1426     if (is_last_report) {
1427         int64_t raw= audio_size + video_size + extra_size;
1428         av_log(NULL, AV_LOG_INFO, "\n");
1429         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1430                video_size/1024.0,
1431                audio_size/1024.0,
1432                extra_size/1024.0,
1433                100.0*(total_size - raw)/raw
1434         );
1435     }
1436 }
1437
1438 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1439 {
1440     int fill_char = 0x00;
1441     if (sample_fmt == AV_SAMPLE_FMT_U8)
1442         fill_char = 0x80;
1443     memset(buf, fill_char, size);
1444 }
1445
1446 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1447 {
1448     int i, ret;
1449
1450     for (i = 0; i < nb_ostreams; i++) {
1451         OutputStream   *ost = &ost_table[i];
1452         AVCodecContext *enc = ost->st->codec;
1453         AVFormatContext *os = output_files[ost->file_index].ctx;
1454
1455         if (!ost->encoding_needed)
1456             continue;
1457
1458         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1459             continue;
1460         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1461             continue;
1462
1463         for(;;) {
1464             AVPacket pkt;
1465             int fifo_bytes;
1466             av_init_packet(&pkt);
1467             pkt.stream_index= ost->index;
1468
1469             switch (ost->st->codec->codec_type) {
1470             case AVMEDIA_TYPE_AUDIO:
1471                 fifo_bytes = av_fifo_size(ost->fifo);
1472                 ret = 0;
1473                 /* encode any samples remaining in fifo */
1474                 if (fifo_bytes > 0) {
1475                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1476                     int fs_tmp = enc->frame_size;
1477
1478                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1479                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1480                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1481                     } else { /* pad */
1482                         int frame_bytes = enc->frame_size*osize*enc->channels;
1483                         if (allocated_audio_buf_size < frame_bytes)
1484                             exit_program(1);
1485                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1486                     }
1487
1488                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1489                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1490                                               ost->st->time_base.num, enc->sample_rate);
1491                     enc->frame_size = fs_tmp;
1492                 }
1493                 if (ret <= 0) {
1494                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1495                 }
1496                 if (ret < 0) {
1497                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1498                     exit_program(1);
1499                 }
1500                 audio_size += ret;
1501                 pkt.flags |= AV_PKT_FLAG_KEY;
1502                 break;
1503             case AVMEDIA_TYPE_VIDEO:
1504                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1505                 if (ret < 0) {
1506                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1507                     exit_program(1);
1508                 }
1509                 video_size += ret;
1510                 if(enc->coded_frame && enc->coded_frame->key_frame)
1511                     pkt.flags |= AV_PKT_FLAG_KEY;
1512                 if (ost->logfile && enc->stats_out) {
1513                     fprintf(ost->logfile, "%s", enc->stats_out);
1514                 }
1515                 break;
1516             default:
1517                 ret=-1;
1518             }
1519
1520             if (ret <= 0)
1521                 break;
1522             pkt.data = bit_buffer;
1523             pkt.size = ret;
1524             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1525                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1526             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1527         }
1528     }
1529 }
1530
1531 /*
1532  * Check whether a packet from ist should be written into ost at this time
1533  */
1534 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1535 {
1536     OutputFile *of = &output_files[ost->file_index];
1537     int ist_index  = ist - input_streams;
1538
1539     if (ost->source_index != ist_index)
1540         return 0;
1541
1542     if (of->start_time && ist->pts < of->start_time)
1543         return 0;
1544
1545     if (of->recording_time != INT64_MAX &&
1546         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1547                       (AVRational){1, 1000000}) >= 0) {
1548         ost->is_past_recording_time = 1;
1549         return 0;
1550     }
1551
1552     return 1;
1553 }
1554
1555 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1556 {
1557     OutputFile *of = &output_files[ost->file_index];
1558     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1559     AVPacket opkt;
1560
1561     av_init_packet(&opkt);
1562
1563     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1564         !ost->copy_initial_nonkeyframes)
1565         return;
1566
1567     /* force the input stream PTS */
1568     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1569         audio_size += pkt->size;
1570     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1571         video_size += pkt->size;
1572         ost->sync_opts++;
1573     }
1574
1575     opkt.stream_index = ost->index;
1576     if (pkt->pts != AV_NOPTS_VALUE)
1577         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1578     else
1579         opkt.pts = AV_NOPTS_VALUE;
1580
1581     if (pkt->dts == AV_NOPTS_VALUE)
1582         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1583     else
1584         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1585     opkt.dts -= ost_tb_start_time;
1586
1587     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1588     opkt.flags    = pkt->flags;
1589
1590     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1591     if(   ost->st->codec->codec_id != CODEC_ID_H264
1592        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1593        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1594        ) {
1595         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1596             opkt.destruct = av_destruct_packet;
1597     } else {
1598         opkt.data = pkt->data;
1599         opkt.size = pkt->size;
1600     }
1601
1602     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1603     ost->st->codec->frame_number++;
1604     ost->frame_number++;
1605     av_free_packet(&opkt);
1606 }
1607
1608 static void rate_emu_sleep(InputStream *ist)
1609 {
1610     if (input_files[ist->file_index].rate_emu) {
1611         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1612         int64_t now = av_gettime() - ist->start;
1613         if (pts > now)
1614             usleep(pts - now);
1615     }
1616 }
1617
1618 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1619 {
1620     static unsigned int samples_size = 0;
1621     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1622     uint8_t *decoded_data_buf  = NULL;
1623     int      decoded_data_size = 0;
1624     int i, ret;
1625
1626     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1627         av_free(samples);
1628         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1629         samples      = av_malloc(samples_size);
1630     }
1631     decoded_data_size = samples_size;
1632
1633     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1634                                 pkt);
1635     if (ret < 0)
1636         return ret;
1637     pkt->data   += ret;
1638     pkt->size   -= ret;
1639     *got_output  = decoded_data_size > 0;
1640
1641     /* Some bug in mpeg audio decoder gives */
1642     /* decoded_data_size < 0, it seems they are overflows */
1643     if (!*got_output) {
1644         /* no audio frame */
1645         return 0;
1646     }
1647
1648     decoded_data_buf = (uint8_t *)samples;
1649     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1650                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1651
1652     // preprocess audio (volume)
1653     if (audio_volume != 256) {
1654         switch (ist->st->codec->sample_fmt) {
1655         case AV_SAMPLE_FMT_U8:
1656         {
1657             uint8_t *volp = samples;
1658             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1659                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1660                 *volp++ = av_clip_uint8(v);
1661             }
1662             break;
1663         }
1664         case AV_SAMPLE_FMT_S16:
1665         {
1666             int16_t *volp = samples;
1667             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1668                 int v = ((*volp) * audio_volume + 128) >> 8;
1669                 *volp++ = av_clip_int16(v);
1670             }
1671             break;
1672         }
1673         case AV_SAMPLE_FMT_S32:
1674         {
1675             int32_t *volp = samples;
1676             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1677                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1678                 *volp++ = av_clipl_int32(v);
1679             }
1680             break;
1681         }
1682         case AV_SAMPLE_FMT_FLT:
1683         {
1684             float *volp = samples;
1685             float scale = audio_volume / 256.f;
1686             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1687                 *volp++ *= scale;
1688             }
1689             break;
1690         }
1691         case AV_SAMPLE_FMT_DBL:
1692         {
1693             double *volp = samples;
1694             double scale = audio_volume / 256.;
1695             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1696                 *volp++ *= scale;
1697             }
1698             break;
1699         }
1700         default:
1701             av_log(NULL, AV_LOG_FATAL,
1702                    "Audio volume adjustment on sample format %s is not supported.\n",
1703                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1704             exit_program(1);
1705         }
1706     }
1707
1708     rate_emu_sleep(ist);
1709
1710     for (i = 0; i < nb_output_streams; i++) {
1711         OutputStream *ost = &output_streams[i];
1712
1713         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1714             continue;
1715         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1716                      decoded_data_buf, decoded_data_size);
1717     }
1718     return 0;
1719 }
1720
1721 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1722 {
1723     AVFrame *decoded_frame, *filtered_frame = NULL;
1724     void *buffer_to_free = NULL;
1725     int i, ret = 0;
1726     float quality;
1727 #if CONFIG_AVFILTER
1728     int frame_available = 1;
1729 #endif
1730
1731     if (!(decoded_frame = avcodec_alloc_frame()))
1732         return AVERROR(ENOMEM);
1733     pkt->pts  = *pkt_pts;
1734     pkt->dts  = ist->pts;
1735     *pkt_pts  = AV_NOPTS_VALUE;
1736
1737     ret = avcodec_decode_video2(ist->st->codec,
1738                                 decoded_frame, got_output, pkt);
1739     if (ret < 0)
1740         goto fail;
1741
1742     quality = same_quant ? decoded_frame->quality : 0;
1743     if (!*got_output) {
1744         /* no picture yet */
1745         av_freep(&decoded_frame);
1746         return 0;
1747     }
1748     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1749                                                  decoded_frame->pkt_dts);
1750     if (ist->st->codec->time_base.num != 0) {
1751         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1752                                            ist->st->codec->ticks_per_frame;
1753         ist->next_pts += ((int64_t)AV_TIME_BASE *
1754                           ist->st->codec->time_base.num * ticks) /
1755                           ist->st->codec->time_base.den;
1756     }
1757     pkt->size = 0;
1758     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1759
1760     rate_emu_sleep(ist);
1761
1762     for (i = 0; i < nb_output_streams; i++) {
1763         OutputStream *ost = &output_streams[i];
1764         int frame_size;
1765
1766         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1767             continue;
1768
1769 #if CONFIG_AVFILTER
1770         if (ost->input_video_filter) {
1771             AVRational sar;
1772             if (ist->st->sample_aspect_ratio.num)
1773                 sar = ist->st->sample_aspect_ratio;
1774             else
1775                 sar = ist->st->codec->sample_aspect_ratio;
1776             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1777             if (!(filtered_frame = avcodec_alloc_frame())) {
1778                 ret = AVERROR(ENOMEM);
1779                 goto fail;
1780             }
1781             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1782         }
1783         while (frame_available) {
1784             AVRational ist_pts_tb;
1785             if (ost->output_video_filter)
1786                 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1787             if (ost->picref)
1788                 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1789             if (ost->picref->video && !ost->frame_aspect_ratio)
1790                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1791 #else
1792             filtered_frame = decoded_frame;
1793 #endif
1794
1795             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1796                          same_quant ? quality : ost->st->codec->global_quality);
1797             if (vstats_filename && frame_size)
1798                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1799 #if CONFIG_AVFILTER
1800             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1801             if (ost->picref)
1802                 avfilter_unref_buffer(ost->picref);
1803         }
1804         av_freep(&filtered_frame);
1805 #endif
1806     }
1807
1808 fail:
1809     av_free(buffer_to_free);
1810     av_freep(&decoded_frame);
1811     return ret;
1812 }
1813
1814 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1815 static int output_packet(InputStream *ist, int ist_index,
1816                          OutputStream *ost_table, int nb_ostreams,
1817                          const AVPacket *pkt)
1818 {
1819     AVFormatContext *os;
1820     OutputStream *ost;
1821     int ret = 0, i;
1822     int got_output;
1823     AVSubtitle subtitle, *subtitle_to_free;
1824     int64_t pkt_pts = AV_NOPTS_VALUE;
1825
1826     AVPacket avpkt;
1827
1828     if(ist->next_pts == AV_NOPTS_VALUE)
1829         ist->next_pts= ist->pts;
1830
1831     if (pkt == NULL) {
1832         /* EOF handling */
1833         av_init_packet(&avpkt);
1834         avpkt.data = NULL;
1835         avpkt.size = 0;
1836         goto handle_eof;
1837     } else {
1838         avpkt = *pkt;
1839     }
1840
1841     if(pkt->dts != AV_NOPTS_VALUE)
1842         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1843     if(pkt->pts != AV_NOPTS_VALUE)
1844         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1845
1846     //while we have more to decode or while the decoder did output something on EOF
1847     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1848     handle_eof:
1849         ist->pts= ist->next_pts;
1850
1851         if(avpkt.size && avpkt.size != pkt->size)
1852             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1853                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1854             ist->showed_multi_packet_warning=1;
1855
1856         // XXX temporary hack, will be turned to a switch() once all codec
1857         // types are split out
1858         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1859             ret = transcode_audio(ist, &avpkt, &got_output);
1860             if (ret < 0)
1861                 return ret;
1862             continue;
1863         } else if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1864             ret = transcode_video(ist, &avpkt, &got_output, &pkt_pts);
1865             if (ret < 0)
1866                 return ret;
1867             if (!got_output)
1868                 goto discard_packet;
1869             continue;
1870         }
1871
1872         /* decode the packet if needed */
1873         subtitle_to_free = NULL;
1874         switch(ist->st->codec->codec_type) {
1875         case AVMEDIA_TYPE_SUBTITLE:
1876             ret = avcodec_decode_subtitle2(ist->st->codec,
1877                                            &subtitle, &got_output, &avpkt);
1878             if (ret < 0)
1879                 return ret;
1880             if (!got_output) {
1881                 goto discard_packet;
1882             }
1883             subtitle_to_free = &subtitle;
1884             avpkt.size = 0;
1885             break;
1886         default:
1887             return -1;
1888         }
1889
1890         /* frame rate emulation */
1891         rate_emu_sleep(ist);
1892
1893         /* if output time reached then transcode raw format,
1894            encode packets and output them */
1895         for (i = 0; i < nb_ostreams; i++) {
1896             ost = &ost_table[i];
1897
1898             if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1899                 continue;
1900
1901                 os = output_files[ost->file_index].ctx;
1902
1903                 /* set the input output pts pairs */
1904                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1905
1906                 av_assert0(ist->decoding_needed);
1907                 switch(ost->st->codec->codec_type) {
1908                 case AVMEDIA_TYPE_SUBTITLE:
1909                     do_subtitle_out(os, ost, ist, &subtitle,
1910                                     pkt->pts);
1911                     break;
1912                 default:
1913                     abort();
1914                 }
1915             }
1916
1917         /* XXX: allocate the subtitles in the codec ? */
1918         if (subtitle_to_free) {
1919             avsubtitle_free(subtitle_to_free);
1920             subtitle_to_free = NULL;
1921         }
1922         if (ret < 0)
1923             return ret;
1924     }
1925  discard_packet:
1926
1927     /* handle stream copy */
1928     if (!ist->decoding_needed) {
1929         rate_emu_sleep(ist);
1930         switch (ist->st->codec->codec_type) {
1931         case AVMEDIA_TYPE_AUDIO:
1932             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1933                              ist->st->codec->sample_rate;
1934             break;
1935         case AVMEDIA_TYPE_VIDEO:
1936             if (ist->st->codec->time_base.num != 0) {
1937                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1938                 ist->next_pts += ((int64_t)AV_TIME_BASE *
1939                                   ist->st->codec->time_base.num * ticks) /
1940                                   ist->st->codec->time_base.den;
1941             }
1942             break;
1943         }
1944     }
1945     for (i = 0; pkt && i < nb_ostreams; i++) {
1946         ost = &ost_table[i];
1947
1948         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1949             continue;
1950
1951         do_streamcopy(ist, ost, pkt);
1952     }
1953
1954     return 0;
1955 }
1956
1957 static void print_sdp(OutputFile *output_files, int n)
1958 {
1959     char sdp[2048];
1960     int i;
1961     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1962
1963     if (!avc)
1964         exit_program(1);
1965     for (i = 0; i < n; i++)
1966         avc[i] = output_files[i].ctx;
1967
1968     av_sdp_create(avc, n, sdp, sizeof(sdp));
1969     printf("SDP:\n%s\n", sdp);
1970     fflush(stdout);
1971     av_freep(&avc);
1972 }
1973
1974 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1975                              char *error, int error_len)
1976 {
1977     int i;
1978     InputStream *ist = &input_streams[ist_index];
1979     if (ist->decoding_needed) {
1980         AVCodec *codec = ist->dec;
1981         if (!codec) {
1982             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1983                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1984             return AVERROR(EINVAL);
1985         }
1986
1987         /* update requested sample format for the decoder based on the
1988            corresponding encoder sample format */
1989         for (i = 0; i < nb_output_streams; i++) {
1990             OutputStream *ost = &output_streams[i];
1991             if (ost->source_index == ist_index) {
1992                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1993                 break;
1994             }
1995         }
1996
1997         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1998             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1999                     ist->file_index, ist->st->index);
2000             return AVERROR(EINVAL);
2001         }
2002         assert_codec_experimental(ist->st->codec, 0);
2003         assert_avoptions(ist->opts);
2004     }
2005
2006     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;
2007     ist->next_pts = AV_NOPTS_VALUE;
2008     init_pts_correction(&ist->pts_ctx);
2009     ist->is_start = 1;
2010
2011     return 0;
2012 }
2013
2014 static int transcode_init(OutputFile *output_files,
2015                           int nb_output_files,
2016                           InputFile *input_files,
2017                           int nb_input_files)
2018 {
2019     int ret = 0, i, j, k;
2020     AVFormatContext *oc;
2021     AVCodecContext *codec, *icodec;
2022     OutputStream *ost;
2023     InputStream *ist;
2024     char error[1024];
2025     int want_sdp = 1;
2026
2027     /* init framerate emulation */
2028     for (i = 0; i < nb_input_files; i++) {
2029         InputFile *ifile = &input_files[i];
2030         if (ifile->rate_emu)
2031             for (j = 0; j < ifile->nb_streams; j++)
2032                 input_streams[j + ifile->ist_index].start = av_gettime();
2033     }
2034
2035     /* output stream init */
2036     for (i = 0; i < nb_output_files; i++) {
2037         oc = output_files[i].ctx;
2038         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2039             av_dump_format(oc, i, oc->filename, 1);
2040             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2041             return AVERROR(EINVAL);
2042         }
2043     }
2044
2045     /* for each output stream, we compute the right encoding parameters */
2046     for (i = 0; i < nb_output_streams; i++) {
2047         ost = &output_streams[i];
2048         oc  = output_files[ost->file_index].ctx;
2049         ist = &input_streams[ost->source_index];
2050
2051         if (ost->attachment_filename)
2052             continue;
2053
2054         codec  = ost->st->codec;
2055         icodec = ist->st->codec;
2056
2057         ost->st->disposition          = ist->st->disposition;
2058         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2059         codec->chroma_sample_location = icodec->chroma_sample_location;
2060
2061         if (ost->stream_copy) {
2062             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2063
2064             if (extra_size > INT_MAX) {
2065                 return AVERROR(EINVAL);
2066             }
2067
2068             /* if stream_copy is selected, no need to decode or encode */
2069             codec->codec_id   = icodec->codec_id;
2070             codec->codec_type = icodec->codec_type;
2071
2072             if (!codec->codec_tag) {
2073                 if (!oc->oformat->codec_tag ||
2074                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2075                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2076                     codec->codec_tag = icodec->codec_tag;
2077             }
2078
2079             codec->bit_rate       = icodec->bit_rate;
2080             codec->rc_max_rate    = icodec->rc_max_rate;
2081             codec->rc_buffer_size = icodec->rc_buffer_size;
2082             codec->extradata      = av_mallocz(extra_size);
2083             if (!codec->extradata) {
2084                 return AVERROR(ENOMEM);
2085             }
2086             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2087             codec->extradata_size = icodec->extradata_size;
2088             if (!copy_tb &&
2089                 av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) &&
2090                 av_q2d(ist->st->time_base) < 1.0/500) {
2091                 codec->time_base      = icodec->time_base;
2092                 codec->time_base.num *= icodec->ticks_per_frame;
2093                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2094                           codec->time_base.num, codec->time_base.den, INT_MAX);
2095             } else
2096                 codec->time_base = ist->st->time_base;
2097
2098             switch(codec->codec_type) {
2099             case AVMEDIA_TYPE_AUDIO:
2100                 if(audio_volume != 256) {
2101                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2102                     exit_program(1);
2103                 }
2104                 codec->channel_layout     = icodec->channel_layout;
2105                 codec->sample_rate        = icodec->sample_rate;
2106                 codec->channels           = icodec->channels;
2107                 codec->frame_size         = icodec->frame_size;
2108                 codec->audio_service_type = icodec->audio_service_type;
2109                 codec->block_align        = icodec->block_align;
2110                 break;
2111             case AVMEDIA_TYPE_VIDEO:
2112                 codec->pix_fmt            = icodec->pix_fmt;
2113                 codec->width              = icodec->width;
2114                 codec->height             = icodec->height;
2115                 codec->has_b_frames       = icodec->has_b_frames;
2116                 if (!codec->sample_aspect_ratio.num) {
2117                     codec->sample_aspect_ratio   =
2118                     ost->st->sample_aspect_ratio =
2119                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2120                         ist->st->codec->sample_aspect_ratio.num ?
2121                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2122                 }
2123                 break;
2124             case AVMEDIA_TYPE_SUBTITLE:
2125                 codec->width  = icodec->width;
2126                 codec->height = icodec->height;
2127                 break;
2128             case AVMEDIA_TYPE_DATA:
2129             case AVMEDIA_TYPE_ATTACHMENT:
2130                 break;
2131             default:
2132                 abort();
2133             }
2134         } else {
2135             if (!ost->enc)
2136                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2137
2138             ist->decoding_needed = 1;
2139             ost->encoding_needed = 1;
2140
2141             switch(codec->codec_type) {
2142             case AVMEDIA_TYPE_AUDIO:
2143                 ost->fifo = av_fifo_alloc(1024);
2144                 if (!ost->fifo) {
2145                     return AVERROR(ENOMEM);
2146                 }
2147                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2148
2149                 if (!codec->sample_rate)
2150                     codec->sample_rate = icodec->sample_rate;
2151                 choose_sample_rate(ost->st, ost->enc);
2152                 codec->time_base = (AVRational){1, codec->sample_rate};
2153
2154                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2155                     codec->sample_fmt = icodec->sample_fmt;
2156                 choose_sample_fmt(ost->st, ost->enc);
2157
2158                 if (!codec->channels)
2159                     codec->channels = icodec->channels;
2160                 codec->channel_layout = icodec->channel_layout;
2161                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2162                     codec->channel_layout = 0;
2163
2164                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2165                 icodec->request_channels  = codec-> channels;
2166                 ost->resample_sample_fmt  = icodec->sample_fmt;
2167                 ost->resample_sample_rate = icodec->sample_rate;
2168                 ost->resample_channels    = icodec->channels;
2169                 break;
2170             case AVMEDIA_TYPE_VIDEO:
2171                 if (codec->pix_fmt == PIX_FMT_NONE)
2172                     codec->pix_fmt = icodec->pix_fmt;
2173                 choose_pixel_fmt(ost->st, ost->enc);
2174
2175                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2176                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2177                     exit_program(1);
2178                 }
2179
2180                 if (!codec->width || !codec->height) {
2181                     codec->width  = icodec->width;
2182                     codec->height = icodec->height;
2183                 }
2184
2185                 ost->video_resample = codec->width   != icodec->width  ||
2186                                       codec->height  != icodec->height ||
2187                                       codec->pix_fmt != icodec->pix_fmt;
2188                 if (ost->video_resample) {
2189 #if !CONFIG_AVFILTER
2190                     avcodec_get_frame_defaults(&ost->pict_tmp);
2191                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2192                                        codec->width, codec->height)) {
2193                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2194                         exit_program(1);
2195                     }
2196                     ost->img_resample_ctx = sws_getContext(
2197                         icodec->width,
2198                         icodec->height,
2199                         icodec->pix_fmt,
2200                         codec->width,
2201                         codec->height,
2202                         codec->pix_fmt,
2203                         ost->sws_flags, NULL, NULL, NULL);
2204                     if (ost->img_resample_ctx == NULL) {
2205                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2206                         exit_program(1);
2207                     }
2208 #endif
2209                     codec->bits_per_raw_sample= 0;
2210                 }
2211
2212                 ost->resample_height  = icodec->height;
2213                 ost->resample_width   = icodec->width;
2214                 ost->resample_pix_fmt = icodec->pix_fmt;
2215
2216                 if (!ost->frame_rate.num)
2217                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2218                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2219                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2220                     ost->frame_rate = ost->enc->supported_framerates[idx];
2221                 }
2222                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2223
2224 #if CONFIG_AVFILTER
2225                 if (configure_video_filters(ist, ost)) {
2226                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2227                     exit(1);
2228                 }
2229 #endif
2230                 break;
2231             case AVMEDIA_TYPE_SUBTITLE:
2232                 break;
2233             default:
2234                 abort();
2235                 break;
2236             }
2237             /* two pass mode */
2238             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2239                 char logfilename[1024];
2240                 FILE *f;
2241
2242                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2243                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2244                          i);
2245                 if (codec->flags & CODEC_FLAG_PASS1) {
2246                     f = fopen(logfilename, "wb");
2247                     if (!f) {
2248                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2249                                logfilename, strerror(errno));
2250                         exit_program(1);
2251                     }
2252                     ost->logfile = f;
2253                 } else {
2254                     char  *logbuffer;
2255                     size_t logbuffer_size;
2256                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2257                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2258                                logfilename);
2259                         exit_program(1);
2260                     }
2261                     codec->stats_in = logbuffer;
2262                 }
2263             }
2264         }
2265         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2266             int        size = codec->width * codec->height;
2267             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 200);
2268         }
2269     }
2270
2271     if (!bit_buffer)
2272         bit_buffer = av_malloc(bit_buffer_size);
2273     if (!bit_buffer) {
2274         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2275                bit_buffer_size);
2276         return AVERROR(ENOMEM);
2277     }
2278
2279     /* open each encoder */
2280     for (i = 0; i < nb_output_streams; i++) {
2281         ost = &output_streams[i];
2282         if (ost->encoding_needed) {
2283             AVCodec      *codec = ost->enc;
2284             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2285             if (!codec) {
2286                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2287                          ost->st->codec->codec_id, ost->file_index, ost->index);
2288                 ret = AVERROR(EINVAL);
2289                 goto dump_format;
2290             }
2291             if (dec->subtitle_header) {
2292                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2293                 if (!ost->st->codec->subtitle_header) {
2294                     ret = AVERROR(ENOMEM);
2295                     goto dump_format;
2296                 }
2297                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2298                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2299             }
2300             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2301                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2302                         ost->file_index, ost->index);
2303                 ret = AVERROR(EINVAL);
2304                 goto dump_format;
2305             }
2306             assert_codec_experimental(ost->st->codec, 1);
2307             assert_avoptions(ost->opts);
2308             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2309                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2310                                              "It takes bits/s as argument, not kbits/s\n");
2311             extra_size += ost->st->codec->extradata_size;
2312
2313             if (ost->st->codec->me_threshold)
2314                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2315         }
2316     }
2317
2318     /* init input streams */
2319     for (i = 0; i < nb_input_streams; i++)
2320         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2321             goto dump_format;
2322
2323     /* discard unused programs */
2324     for (i = 0; i < nb_input_files; i++) {
2325         InputFile *ifile = &input_files[i];
2326         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2327             AVProgram *p = ifile->ctx->programs[j];
2328             int discard  = AVDISCARD_ALL;
2329
2330             for (k = 0; k < p->nb_stream_indexes; k++)
2331                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2332                     discard = AVDISCARD_DEFAULT;
2333                     break;
2334                 }
2335             p->discard = discard;
2336         }
2337     }
2338
2339     /* open files and write file headers */
2340     for (i = 0; i < nb_output_files; i++) {
2341         oc = output_files[i].ctx;
2342         oc->interrupt_callback = int_cb;
2343         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2344             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2345             ret = AVERROR(EINVAL);
2346             goto dump_format;
2347         }
2348         assert_avoptions(output_files[i].opts);
2349         if (strcmp(oc->oformat->name, "rtp")) {
2350             want_sdp = 0;
2351         }
2352     }
2353
2354  dump_format:
2355     /* dump the file output parameters - cannot be done before in case
2356        of stream copy */
2357     for (i = 0; i < nb_output_files; i++) {
2358         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2359     }
2360
2361     /* dump the stream mapping */
2362     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2363     for (i = 0; i < nb_output_streams; i++) {
2364         ost = &output_streams[i];
2365
2366         if (ost->attachment_filename) {
2367             /* an attached file */
2368             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2369                    ost->attachment_filename, ost->file_index, ost->index);
2370             continue;
2371         }
2372         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2373                input_streams[ost->source_index].file_index,
2374                input_streams[ost->source_index].st->index,
2375                ost->file_index,
2376                ost->index);
2377         if (ost->sync_ist != &input_streams[ost->source_index])
2378             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2379                    ost->sync_ist->file_index,
2380                    ost->sync_ist->st->index);
2381         if (ost->stream_copy)
2382             av_log(NULL, AV_LOG_INFO, " (copy)");
2383         else
2384             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2385                    input_streams[ost->source_index].dec->name : "?",
2386                    ost->enc ? ost->enc->name : "?");
2387         av_log(NULL, AV_LOG_INFO, "\n");
2388     }
2389
2390     if (ret) {
2391         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2392         return ret;
2393     }
2394
2395     if (want_sdp) {
2396         print_sdp(output_files, nb_output_files);
2397     }
2398
2399     return 0;
2400 }
2401
2402 /*
2403  * The following code is the main loop of the file converter
2404  */
2405 static int transcode(OutputFile *output_files,
2406                      int nb_output_files,
2407                      InputFile *input_files,
2408                      int nb_input_files)
2409 {
2410     int ret, i;
2411     AVFormatContext *is, *os;
2412     OutputStream *ost;
2413     InputStream *ist;
2414     uint8_t *no_packet;
2415     int no_packet_count=0;
2416     int64_t timer_start;
2417
2418     if (!(no_packet = av_mallocz(nb_input_files)))
2419         exit_program(1);
2420
2421     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2422     if (ret < 0)
2423         goto fail;
2424
2425     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2426     term_init();
2427
2428     timer_start = av_gettime();
2429
2430     for(; received_sigterm == 0;) {
2431         int file_index, ist_index;
2432         AVPacket pkt;
2433         int64_t ipts_min;
2434         double opts_min;
2435
2436         ipts_min = INT64_MAX;
2437         opts_min= 1e100;
2438
2439         /* select the stream that we must read now by looking at the
2440            smallest output pts */
2441         file_index = -1;
2442         for (i = 0; i < nb_output_streams; i++) {
2443             OutputFile *of;
2444             int64_t ipts;
2445             double  opts;
2446             ost = &output_streams[i];
2447             of = &output_files[ost->file_index];
2448             os = output_files[ost->file_index].ctx;
2449             ist = &input_streams[ost->source_index];
2450             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2451                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2452                 continue;
2453             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2454             ipts = ist->pts;
2455             if (!input_files[ist->file_index].eof_reached){
2456                 if(ipts < ipts_min) {
2457                     ipts_min = ipts;
2458                     if(input_sync ) file_index = ist->file_index;
2459                 }
2460                 if(opts < opts_min) {
2461                     opts_min = opts;
2462                     if(!input_sync) file_index = ist->file_index;
2463                 }
2464             }
2465             if (ost->frame_number >= ost->max_frames) {
2466                 int j;
2467                 for (j = 0; j < of->ctx->nb_streams; j++)
2468                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2469                 continue;
2470             }
2471         }
2472         /* if none, if is finished */
2473         if (file_index < 0) {
2474             if(no_packet_count){
2475                 no_packet_count=0;
2476                 memset(no_packet, 0, nb_input_files);
2477                 usleep(10000);
2478                 continue;
2479             }
2480             break;
2481         }
2482
2483         /* read a frame from it and output it in the fifo */
2484         is = input_files[file_index].ctx;
2485         ret= av_read_frame(is, &pkt);
2486         if(ret == AVERROR(EAGAIN)){
2487             no_packet[file_index]=1;
2488             no_packet_count++;
2489             continue;
2490         }
2491         if (ret < 0) {
2492             input_files[file_index].eof_reached = 1;
2493             if (opt_shortest)
2494                 break;
2495             else
2496                 continue;
2497         }
2498
2499         no_packet_count=0;
2500         memset(no_packet, 0, nb_input_files);
2501
2502         if (do_pkt_dump) {
2503             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2504                              is->streams[pkt.stream_index]);
2505         }
2506         /* the following test is needed in case new streams appear
2507            dynamically in stream : we ignore them */
2508         if (pkt.stream_index >= input_files[file_index].nb_streams)
2509             goto discard_packet;
2510         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2511         ist = &input_streams[ist_index];
2512         if (ist->discard)
2513             goto discard_packet;
2514
2515         if (pkt.dts != AV_NOPTS_VALUE)
2516             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2517         if (pkt.pts != AV_NOPTS_VALUE)
2518             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2519
2520         if(pkt.pts != AV_NOPTS_VALUE)
2521             pkt.pts *= ist->ts_scale;
2522         if(pkt.dts != AV_NOPTS_VALUE)
2523             pkt.dts *= ist->ts_scale;
2524
2525 //        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);
2526         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2527             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2528             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2529             int64_t delta= pkt_dts - ist->next_pts;
2530             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2531                 input_files[ist->file_index].ts_offset -= delta;
2532                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2533                        delta, input_files[ist->file_index].ts_offset);
2534                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2535                 if(pkt.pts != AV_NOPTS_VALUE)
2536                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2537             }
2538         }
2539
2540         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2541         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2542
2543             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2544                    ist->file_index, ist->st->index);
2545             if (exit_on_error)
2546                 exit_program(1);
2547             av_free_packet(&pkt);
2548             continue;
2549         }
2550
2551     discard_packet:
2552         av_free_packet(&pkt);
2553
2554         /* dump report by using the output first video and audio streams */
2555         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2556     }
2557
2558     /* at the end of stream, we must flush the decoder buffers */
2559     for (i = 0; i < nb_input_streams; i++) {
2560         ist = &input_streams[i];
2561         if (ist->decoding_needed) {
2562             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2563         }
2564     }
2565     flush_encoders(output_streams, nb_output_streams);
2566
2567     term_exit();
2568
2569     /* write the trailer if needed and close file */
2570     for(i=0;i<nb_output_files;i++) {
2571         os = output_files[i].ctx;
2572         av_write_trailer(os);
2573     }
2574
2575     /* dump report by using the first video and audio streams */
2576     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2577
2578     /* close each encoder */
2579     for (i = 0; i < nb_output_streams; i++) {
2580         ost = &output_streams[i];
2581         if (ost->encoding_needed) {
2582             av_freep(&ost->st->codec->stats_in);
2583             avcodec_close(ost->st->codec);
2584         }
2585 #if CONFIG_AVFILTER
2586         avfilter_graph_free(&ost->graph);
2587 #endif
2588     }
2589
2590     /* close each decoder */
2591     for (i = 0; i < nb_input_streams; i++) {
2592         ist = &input_streams[i];
2593         if (ist->decoding_needed) {
2594             avcodec_close(ist->st->codec);
2595         }
2596     }
2597
2598     /* finished ! */
2599     ret = 0;
2600
2601  fail:
2602     av_freep(&bit_buffer);
2603     av_freep(&no_packet);
2604
2605     if (output_streams) {
2606         for (i = 0; i < nb_output_streams; i++) {
2607             ost = &output_streams[i];
2608             if (ost) {
2609                 if (ost->stream_copy)
2610                     av_freep(&ost->st->codec->extradata);
2611                 if (ost->logfile) {
2612                     fclose(ost->logfile);
2613                     ost->logfile = NULL;
2614                 }
2615                 av_fifo_free(ost->fifo); /* works even if fifo is not
2616                                              initialized but set to zero */
2617                 av_freep(&ost->st->codec->subtitle_header);
2618                 av_free(ost->pict_tmp.data[0]);
2619                 av_free(ost->forced_kf_pts);
2620                 if (ost->video_resample)
2621                     sws_freeContext(ost->img_resample_ctx);
2622                 if (ost->resample)
2623                     audio_resample_close(ost->resample);
2624                 if (ost->reformat_ctx)
2625                     av_audio_convert_free(ost->reformat_ctx);
2626                 av_dict_free(&ost->opts);
2627             }
2628         }
2629     }
2630     return ret;
2631 }
2632
2633 static double parse_frame_aspect_ratio(const char *arg)
2634 {
2635     int x = 0, y = 0;
2636     double ar = 0;
2637     const char *p;
2638     char *end;
2639
2640     p = strchr(arg, ':');
2641     if (p) {
2642         x = strtol(arg, &end, 10);
2643         if (end == p)
2644             y = strtol(end+1, &end, 10);
2645         if (x > 0 && y > 0)
2646             ar = (double)x / (double)y;
2647     } else
2648         ar = strtod(arg, NULL);
2649
2650     if (!ar) {
2651         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2652         exit_program(1);
2653     }
2654     return ar;
2655 }
2656
2657 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2658 {
2659     return parse_option(o, "codec:a", arg, options);
2660 }
2661
2662 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2663 {
2664     return parse_option(o, "codec:v", arg, options);
2665 }
2666
2667 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2668 {
2669     return parse_option(o, "codec:s", arg, options);
2670 }
2671
2672 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2673 {
2674     return parse_option(o, "codec:d", arg, options);
2675 }
2676
2677 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2678 {
2679     StreamMap *m = NULL;
2680     int i, negative = 0, file_idx;
2681     int sync_file_idx = -1, sync_stream_idx;
2682     char *p, *sync;
2683     char *map;
2684
2685     if (*arg == '-') {
2686         negative = 1;
2687         arg++;
2688     }
2689     map = av_strdup(arg);
2690
2691     /* parse sync stream first, just pick first matching stream */
2692     if (sync = strchr(map, ',')) {
2693         *sync = 0;
2694         sync_file_idx = strtol(sync + 1, &sync, 0);
2695         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2696             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2697             exit_program(1);
2698         }
2699         if (*sync)
2700             sync++;
2701         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2702             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2703                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2704                 sync_stream_idx = i;
2705                 break;
2706             }
2707         if (i == input_files[sync_file_idx].nb_streams) {
2708             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2709                                        "match any streams.\n", arg);
2710             exit_program(1);
2711         }
2712     }
2713
2714
2715     file_idx = strtol(map, &p, 0);
2716     if (file_idx >= nb_input_files || file_idx < 0) {
2717         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2718         exit_program(1);
2719     }
2720     if (negative)
2721         /* disable some already defined maps */
2722         for (i = 0; i < o->nb_stream_maps; i++) {
2723             m = &o->stream_maps[i];
2724             if (file_idx == m->file_index &&
2725                 check_stream_specifier(input_files[m->file_index].ctx,
2726                                        input_files[m->file_index].ctx->streams[m->stream_index],
2727                                        *p == ':' ? p + 1 : p) > 0)
2728                 m->disabled = 1;
2729         }
2730     else
2731         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2732             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2733                         *p == ':' ? p + 1 : p) <= 0)
2734                 continue;
2735             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2736                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2737             m = &o->stream_maps[o->nb_stream_maps - 1];
2738
2739             m->file_index   = file_idx;
2740             m->stream_index = i;
2741
2742             if (sync_file_idx >= 0) {
2743                 m->sync_file_index   = sync_file_idx;
2744                 m->sync_stream_index = sync_stream_idx;
2745             } else {
2746                 m->sync_file_index   = file_idx;
2747                 m->sync_stream_index = i;
2748             }
2749         }
2750
2751     if (!m) {
2752         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2753         exit_program(1);
2754     }
2755
2756     av_freep(&map);
2757     return 0;
2758 }
2759
2760 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2761 {
2762     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2763                                 &o->nb_attachments, o->nb_attachments + 1);
2764     o->attachments[o->nb_attachments - 1] = arg;
2765     return 0;
2766 }
2767
2768 static void parse_meta_type(char *arg, char *type, int *index)
2769 {
2770     if (*arg) {
2771         *type = *arg;
2772         switch (*arg) {
2773         case 'g':
2774             break;
2775         case 's':
2776         case 'c':
2777         case 'p':
2778             if (*(++arg) == ':')
2779                 *index = strtol(++arg, NULL, 0);
2780             break;
2781         default:
2782             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2783             exit_program(1);
2784         }
2785     } else
2786         *type = 'g';
2787 }
2788
2789 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2790 {
2791     MetadataMap *m, *m1;
2792     char *p;
2793
2794     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2795                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2796
2797     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2798     m->file = strtol(arg, &p, 0);
2799     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2800
2801     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2802     if (p = strchr(opt, ':'))
2803         parse_meta_type(p + 1, &m1->type, &m1->index);
2804     else
2805         m1->type = 'g';
2806
2807     if (m->type == 'g' || m1->type == 'g')
2808         o->metadata_global_manual = 1;
2809     if (m->type == 's' || m1->type == 's')
2810         o->metadata_streams_manual = 1;
2811     if (m->type == 'c' || m1->type == 'c')
2812         o->metadata_chapters_manual = 1;
2813
2814     return 0;
2815 }
2816
2817 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2818 {
2819     const char *codec_string = encoder ? "encoder" : "decoder";
2820     AVCodec *codec;
2821
2822     codec = encoder ?
2823         avcodec_find_encoder_by_name(name) :
2824         avcodec_find_decoder_by_name(name);
2825     if(!codec) {
2826         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2827         exit_program(1);
2828     }
2829     if(codec->type != type) {
2830         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2831         exit_program(1);
2832     }
2833     return codec;
2834 }
2835
2836 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
2837 {
2838     char *codec_name = NULL;
2839
2840     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2841     if (codec_name) {
2842         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
2843         st->codec->codec_id = codec->id;
2844         return codec;
2845     } else
2846         return avcodec_find_decoder(st->codec->codec_id);
2847 }
2848
2849 /**
2850  * Add all the streams from the given input file to the global
2851  * list of input streams.
2852  */
2853 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2854 {
2855     int i, rfps, rfps_base;
2856
2857     for (i = 0; i < ic->nb_streams; i++) {
2858         AVStream *st = ic->streams[i];
2859         AVCodecContext *dec = st->codec;
2860         InputStream *ist;
2861
2862         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2863         ist = &input_streams[nb_input_streams - 1];
2864         ist->st = st;
2865         ist->file_index = nb_input_files;
2866         ist->discard = 1;
2867         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2868
2869         ist->ts_scale = 1.0;
2870         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
2871
2872         ist->dec = choose_decoder(o, ic, st);
2873
2874         switch (dec->codec_type) {
2875         case AVMEDIA_TYPE_AUDIO:
2876             if (o->audio_disable)
2877                 st->discard= AVDISCARD_ALL;
2878             break;
2879         case AVMEDIA_TYPE_VIDEO:
2880             rfps      = ic->streams[i]->r_frame_rate.num;
2881             rfps_base = ic->streams[i]->r_frame_rate.den;
2882             if (dec->lowres) {
2883                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2884                 dec->height >>= dec->lowres;
2885                 dec->width  >>= dec->lowres;
2886             }
2887
2888             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2889
2890                 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",
2891                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2892                        (float)rfps / rfps_base, rfps, rfps_base);
2893             }
2894
2895             if (o->video_disable)
2896                 st->discard= AVDISCARD_ALL;
2897             else if(video_discard)
2898                 st->discard= video_discard;
2899             break;
2900         case AVMEDIA_TYPE_DATA:
2901             break;
2902         case AVMEDIA_TYPE_SUBTITLE:
2903             if (o->subtitle_disable)
2904                 st->discard = AVDISCARD_ALL;
2905             break;
2906         case AVMEDIA_TYPE_ATTACHMENT:
2907         case AVMEDIA_TYPE_UNKNOWN:
2908             break;
2909         default:
2910             abort();
2911         }
2912     }
2913 }
2914
2915 static void assert_file_overwrite(const char *filename)
2916 {
2917     if (!file_overwrite &&
2918         (strchr(filename, ':') == NULL || filename[1] == ':' ||
2919          av_strstart(filename, "file:", NULL))) {
2920         if (avio_check(filename, 0) == 0) {
2921             if (!using_stdin) {
2922                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
2923                 fflush(stderr);
2924                 if (!read_yesno()) {
2925                     fprintf(stderr, "Not overwriting - exiting\n");
2926                     exit_program(1);
2927                 }
2928             }
2929             else {
2930                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
2931                 exit_program(1);
2932             }
2933         }
2934     }
2935 }
2936
2937 static void dump_attachment(AVStream *st, const char *filename)
2938 {
2939     int ret;
2940     AVIOContext *out = NULL;
2941     AVDictionaryEntry *e;
2942
2943     if (!st->codec->extradata_size) {
2944         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
2945                nb_input_files - 1, st->index);
2946         return;
2947     }
2948     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
2949         filename = e->value;
2950     if (!*filename) {
2951         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
2952                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
2953         exit_program(1);
2954     }
2955
2956     assert_file_overwrite(filename);
2957
2958     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
2959         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
2960                filename);
2961         exit_program(1);
2962     }
2963
2964     avio_write(out, st->codec->extradata, st->codec->extradata_size);
2965     avio_flush(out);
2966     avio_close(out);
2967 }
2968
2969 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2970 {
2971     AVFormatContext *ic;
2972     AVInputFormat *file_iformat = NULL;
2973     int err, i, ret;
2974     int64_t timestamp;
2975     uint8_t buf[128];
2976     AVDictionary **opts;
2977     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2978
2979     if (o->format) {
2980         if (!(file_iformat = av_find_input_format(o->format))) {
2981             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2982             exit_program(1);
2983         }
2984     }
2985
2986     if (!strcmp(filename, "-"))
2987         filename = "pipe:";
2988
2989     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2990                     !strcmp(filename, "/dev/stdin");
2991
2992     /* get default parameters from command line */
2993     ic = avformat_alloc_context();
2994     if (!ic) {
2995         print_error(filename, AVERROR(ENOMEM));
2996         exit_program(1);
2997     }
2998     if (o->nb_audio_sample_rate) {
2999         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3000         av_dict_set(&format_opts, "sample_rate", buf, 0);
3001     }
3002     if (o->nb_audio_channels) {
3003         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3004         av_dict_set(&format_opts, "channels", buf, 0);
3005     }
3006     if (o->nb_frame_rates) {
3007         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3008     }
3009     if (o->nb_frame_sizes) {
3010         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3011     }
3012     if (o->nb_frame_pix_fmts)
3013         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3014
3015     ic->flags |= AVFMT_FLAG_NONBLOCK;
3016     ic->interrupt_callback = int_cb;
3017
3018     /* open the input file with generic libav function */
3019     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3020     if (err < 0) {
3021         print_error(filename, err);
3022         exit_program(1);
3023     }
3024     assert_avoptions(format_opts);
3025
3026     /* apply forced codec ids */
3027     for (i = 0; i < ic->nb_streams; i++)
3028         choose_decoder(o, ic, ic->streams[i]);
3029
3030     /* Set AVCodecContext options for avformat_find_stream_info */
3031     opts = setup_find_stream_info_opts(ic, codec_opts);
3032     orig_nb_streams = ic->nb_streams;
3033
3034     /* If not enough info to get the stream parameters, we decode the
3035        first frames to get it. (used in mpeg case for example) */
3036     ret = avformat_find_stream_info(ic, opts);
3037     if (ret < 0) {
3038         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3039         av_close_input_file(ic);
3040         exit_program(1);
3041     }
3042
3043     timestamp = o->start_time;
3044     /* add the stream start time */
3045     if (ic->start_time != AV_NOPTS_VALUE)
3046         timestamp += ic->start_time;
3047
3048     /* if seeking requested, we execute it */
3049     if (o->start_time != 0) {
3050         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3051         if (ret < 0) {
3052             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3053                    filename, (double)timestamp / AV_TIME_BASE);
3054         }
3055     }
3056
3057     /* update the current parameters so that they match the one of the input stream */
3058     add_input_streams(o, ic);
3059
3060     /* dump the file content */
3061     av_dump_format(ic, nb_input_files, filename, 0);
3062
3063     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3064     input_files[nb_input_files - 1].ctx        = ic;
3065     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3066     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3067     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3068     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3069
3070     for (i = 0; i < o->nb_dump_attachment; i++) {
3071         int j;
3072
3073         for (j = 0; j < ic->nb_streams; j++) {
3074             AVStream *st = ic->streams[j];
3075
3076             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3077                 dump_attachment(st, o->dump_attachment[i].u.str);
3078         }
3079     }
3080
3081     for (i = 0; i < orig_nb_streams; i++)
3082         av_dict_free(&opts[i]);
3083     av_freep(&opts);
3084
3085     reset_options(o);
3086     return 0;
3087 }
3088
3089 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3090                                     AVCodecContext *avctx)
3091 {
3092     char *p;
3093     int n = 1, i;
3094     int64_t t;
3095
3096     for (p = kf; *p; p++)
3097         if (*p == ',')
3098             n++;
3099     ost->forced_kf_count = n;
3100     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3101     if (!ost->forced_kf_pts) {
3102         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3103         exit_program(1);
3104     }
3105     for (i = 0; i < n; i++) {
3106         p = i ? strchr(p, ',') + 1 : kf;
3107         t = parse_time_or_die("force_key_frames", p, 1);
3108         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3109     }
3110 }
3111
3112 static uint8_t *get_line(AVIOContext *s)
3113 {
3114     AVIOContext *line;
3115     uint8_t *buf;
3116     char c;
3117
3118     if (avio_open_dyn_buf(&line) < 0) {
3119         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3120         exit_program(1);
3121     }
3122
3123     while ((c = avio_r8(s)) && c != '\n')
3124         avio_w8(line, c);
3125     avio_w8(line, 0);
3126     avio_close_dyn_buf(line, &buf);
3127
3128     return buf;
3129 }
3130
3131 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3132 {
3133     int i, ret = 1;
3134     char filename[1000];
3135     const char *base[3] = { getenv("AVCONV_DATADIR"),
3136                             getenv("HOME"),
3137                             AVCONV_DATADIR,
3138                             };
3139
3140     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3141         if (!base[i])
3142             continue;
3143         if (codec_name) {
3144             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3145                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3146             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3147         }
3148         if (ret) {
3149             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3150                      i != 1 ? "" : "/.avconv", preset_name);
3151             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3152         }
3153     }
3154     return ret;
3155 }
3156
3157 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3158 {
3159     char *codec_name = NULL;
3160
3161     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3162     if (!codec_name) {
3163         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3164                                                   NULL, ost->st->codec->codec_type);
3165         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3166     } else if (!strcmp(codec_name, "copy"))
3167         ost->stream_copy = 1;
3168     else {
3169         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3170         ost->st->codec->codec_id = ost->enc->id;
3171     }
3172 }
3173
3174 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3175 {
3176     OutputStream *ost;
3177     AVStream *st = avformat_new_stream(oc, NULL);
3178     int idx      = oc->nb_streams - 1, ret = 0;
3179     char *bsf = NULL, *next, *codec_tag = NULL;
3180     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3181     double qscale = -1;
3182     char *buf = NULL, *arg = NULL, *preset = NULL;
3183     AVIOContext *s = NULL;
3184
3185     if (!st) {
3186         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3187         exit_program(1);
3188     }
3189
3190     if (oc->nb_streams - 1 < o->nb_streamid_map)
3191         st->id = o->streamid_map[oc->nb_streams - 1];
3192
3193     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3194                                 nb_output_streams + 1);
3195     ost = &output_streams[nb_output_streams - 1];
3196     ost->file_index = nb_output_files;
3197     ost->index = idx;
3198     ost->st    = st;
3199     st->codec->codec_type = type;
3200     choose_encoder(o, oc, ost);
3201     if (ost->enc) {
3202         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3203     }
3204
3205     avcodec_get_context_defaults3(st->codec, ost->enc);
3206     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3207
3208     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3209     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3210         do  {
3211             buf = get_line(s);
3212             if (!buf[0] || buf[0] == '#') {
3213                 av_free(buf);
3214                 continue;
3215             }
3216             if (!(arg = strchr(buf, '='))) {
3217                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3218                 exit_program(1);
3219             }
3220             *arg++ = 0;
3221             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3222             av_free(buf);
3223         } while (!s->eof_reached);
3224         avio_close(s);
3225     }
3226     if (ret) {
3227         av_log(NULL, AV_LOG_FATAL,
3228                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3229                preset, ost->file_index, ost->index);
3230         exit_program(1);
3231     }
3232
3233     ost->max_frames = INT64_MAX;
3234     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3235
3236     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3237     while (bsf) {
3238         if (next = strchr(bsf, ','))
3239             *next++ = 0;
3240         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3241             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3242             exit_program(1);
3243         }
3244         if (bsfc_prev)
3245             bsfc_prev->next = bsfc;
3246         else
3247             ost->bitstream_filters = bsfc;
3248
3249         bsfc_prev = bsfc;
3250         bsf       = next;
3251     }
3252
3253     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3254     if (codec_tag) {
3255         uint32_t tag = strtol(codec_tag, &next, 0);
3256         if (*next)
3257             tag = AV_RL32(codec_tag);
3258         st->codec->codec_tag = tag;
3259     }
3260
3261     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3262     if (qscale >= 0 || same_quant) {
3263         st->codec->flags |= CODEC_FLAG_QSCALE;
3264         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3265     }
3266
3267     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3268         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3269
3270     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3271     return ost;
3272 }
3273
3274 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3275 {
3276     int i;
3277     const char *p = str;
3278     for(i = 0;; i++) {
3279         dest[i] = atoi(p);
3280         if(i == 63)
3281             break;
3282         p = strchr(p, ',');
3283         if(!p) {
3284             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3285             exit_program(1);
3286         }
3287         p++;
3288     }
3289 }
3290
3291 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3292 {
3293     AVStream *st;
3294     OutputStream *ost;
3295     AVCodecContext *video_enc;
3296
3297     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3298     st  = ost->st;
3299     video_enc = st->codec;
3300
3301     if (!ost->stream_copy) {
3302         const char *p = NULL;
3303         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3304         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3305         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3306         int i;
3307
3308         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3309         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3310             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3311             exit_program(1);
3312         }
3313
3314         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3315         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3316             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3317             exit_program(1);
3318         }
3319
3320         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3321         if (frame_aspect_ratio)
3322             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3323
3324         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3325         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3326             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3327             exit_program(1);
3328         }
3329         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3330
3331         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3332         if (intra_matrix) {
3333             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3334                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3335                 exit_program(1);
3336             }
3337             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3338         }
3339         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3340         if (inter_matrix) {
3341             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3342                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3343                 exit_program(1);
3344             }
3345             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3346         }
3347
3348         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3349         for(i=0; p; i++){
3350             int start, end, q;
3351             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3352             if(e!=3){
3353                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3354                 exit_program(1);
3355             }
3356             video_enc->rc_override=
3357                 av_realloc(video_enc->rc_override,
3358                            sizeof(RcOverride)*(i+1));
3359             video_enc->rc_override[i].start_frame= start;
3360             video_enc->rc_override[i].end_frame  = end;
3361             if(q>0){
3362                 video_enc->rc_override[i].qscale= q;
3363                 video_enc->rc_override[i].quality_factor= 1.0;
3364             }
3365             else{
3366                 video_enc->rc_override[i].qscale= 0;
3367                 video_enc->rc_override[i].quality_factor= -q/100.0;
3368             }
3369             p= strchr(p, '/');
3370             if(p) p++;
3371         }
3372         video_enc->rc_override_count=i;
3373         if (!video_enc->rc_initial_buffer_occupancy)
3374             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3375         video_enc->intra_dc_precision= intra_dc_precision - 8;
3376
3377         /* two pass mode */
3378         if (do_pass) {
3379             if (do_pass == 1) {
3380                 video_enc->flags |= CODEC_FLAG_PASS1;
3381             } else {
3382                 video_enc->flags |= CODEC_FLAG_PASS2;
3383             }
3384         }
3385
3386         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3387         if (forced_key_frames)
3388             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3389
3390         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3391
3392         ost->top_field_first = -1;
3393         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3394
3395         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3396
3397 #if CONFIG_AVFILTER
3398         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3399         if (filters)
3400             ost->avfilter = av_strdup(filters);
3401 #endif
3402     }
3403
3404     return ost;
3405 }
3406
3407 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3408 {
3409     AVStream *st;
3410     OutputStream *ost;
3411     AVCodecContext *audio_enc;
3412
3413     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3414     st  = ost->st;
3415
3416     audio_enc = st->codec;
3417     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3418
3419     if (!ost->stream_copy) {
3420         char *sample_fmt = NULL;
3421
3422         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3423
3424         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3425         if (sample_fmt &&
3426             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3427             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3428             exit_program(1);
3429         }
3430
3431         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3432     }
3433
3434     return ost;
3435 }
3436
3437 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3438 {
3439     OutputStream *ost;
3440
3441     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3442     if (!ost->stream_copy) {
3443         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3444         exit_program(1);
3445     }
3446
3447     return ost;
3448 }
3449
3450 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3451 {
3452     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3453     ost->stream_copy = 1;
3454     return ost;
3455 }
3456
3457 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3458 {
3459     AVStream *st;
3460     OutputStream *ost;
3461     AVCodecContext *subtitle_enc;
3462
3463     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3464     st  = ost->st;
3465     subtitle_enc = st->codec;
3466
3467     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3468
3469     return ost;
3470 }
3471
3472 /* arg format is "output-stream-index:streamid-value". */
3473 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3474 {
3475     int idx;
3476     char *p;
3477     char idx_str[16];
3478
3479     av_strlcpy(idx_str, arg, sizeof(idx_str));
3480     p = strchr(idx_str, ':');
3481     if (!p) {
3482         av_log(NULL, AV_LOG_FATAL,
3483                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3484                arg, opt);
3485         exit_program(1);
3486     }
3487     *p++ = '\0';
3488     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3489     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3490     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3491     return 0;
3492 }
3493
3494 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3495 {
3496     AVFormatContext *is = ifile->ctx;
3497     AVFormatContext *os = ofile->ctx;
3498     int i;
3499
3500     for (i = 0; i < is->nb_chapters; i++) {
3501         AVChapter *in_ch = is->chapters[i], *out_ch;
3502         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3503                                       AV_TIME_BASE_Q, in_ch->time_base);
3504         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3505                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3506
3507
3508         if (in_ch->end < ts_off)
3509             continue;
3510         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3511             break;
3512
3513         out_ch = av_mallocz(sizeof(AVChapter));
3514         if (!out_ch)
3515             return AVERROR(ENOMEM);
3516
3517         out_ch->id        = in_ch->id;
3518         out_ch->time_base = in_ch->time_base;
3519         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3520         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3521
3522         if (copy_metadata)
3523             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3524
3525         os->nb_chapters++;
3526         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3527         if (!os->chapters)
3528             return AVERROR(ENOMEM);
3529         os->chapters[os->nb_chapters - 1] = out_ch;
3530     }
3531     return 0;
3532 }
3533
3534 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3535 {
3536     int i, err;
3537     AVFormatContext *ic = avformat_alloc_context();
3538
3539     ic->interrupt_callback = int_cb;
3540     err = avformat_open_input(&ic, filename, NULL, NULL);
3541     if (err < 0)
3542         return err;
3543     /* copy stream format */
3544     for(i=0;i<ic->nb_streams;i++) {
3545         AVStream *st;
3546         OutputStream *ost;
3547         AVCodec *codec;
3548
3549         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3550         ost   = new_output_stream(o, s, codec->type);
3551         st    = ost->st;
3552
3553         // FIXME: a more elegant solution is needed
3554         memcpy(st, ic->streams[i], sizeof(AVStream));
3555         st->info = NULL;
3556         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3557
3558         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3559             choose_sample_fmt(st, codec);
3560         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3561             choose_pixel_fmt(st, codec);
3562     }
3563
3564     av_close_input_file(ic);
3565     return 0;
3566 }
3567
3568 static void opt_output_file(void *optctx, const char *filename)
3569 {
3570     OptionsContext *o = optctx;
3571     AVFormatContext *oc;
3572     int i, err;
3573     AVOutputFormat *file_oformat;
3574     OutputStream *ost;
3575     InputStream  *ist;
3576
3577     if (!strcmp(filename, "-"))
3578         filename = "pipe:";
3579
3580     oc = avformat_alloc_context();
3581     if (!oc) {
3582         print_error(filename, AVERROR(ENOMEM));
3583         exit_program(1);
3584     }
3585
3586     if (o->format) {
3587         file_oformat = av_guess_format(o->format, NULL, NULL);
3588         if (!file_oformat) {
3589             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3590             exit_program(1);
3591         }
3592     } else {
3593         file_oformat = av_guess_format(NULL, filename, NULL);
3594         if (!file_oformat) {
3595             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3596                    filename);
3597             exit_program(1);
3598         }
3599     }
3600
3601     oc->oformat = file_oformat;
3602     oc->interrupt_callback = int_cb;
3603     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3604
3605     if (!strcmp(file_oformat->name, "ffm") &&
3606         av_strstart(filename, "http:", NULL)) {
3607         /* special case for files sent to avserver: we get the stream
3608            parameters from avserver */
3609         int err = read_avserver_streams(o, oc, filename);
3610         if (err < 0) {
3611             print_error(filename, err);
3612             exit_program(1);
3613         }
3614     } else if (!o->nb_stream_maps) {
3615         /* pick the "best" stream of each type */
3616 #define NEW_STREAM(type, index)\
3617         if (index >= 0) {\
3618             ost = new_ ## type ## _stream(o, oc);\
3619             ost->source_index = index;\
3620             ost->sync_ist     = &input_streams[index];\
3621             input_streams[index].discard = 0;\
3622         }
3623
3624         /* video: highest resolution */
3625         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3626             int area = 0, idx = -1;
3627             for (i = 0; i < nb_input_streams; i++) {
3628                 ist = &input_streams[i];
3629                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3630                     ist->st->codec->width * ist->st->codec->height > area) {
3631                     area = ist->st->codec->width * ist->st->codec->height;
3632                     idx = i;
3633                 }
3634             }
3635             NEW_STREAM(video, idx);
3636         }
3637
3638         /* audio: most channels */
3639         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3640             int channels = 0, idx = -1;
3641             for (i = 0; i < nb_input_streams; i++) {
3642                 ist = &input_streams[i];
3643                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3644                     ist->st->codec->channels > channels) {
3645                     channels = ist->st->codec->channels;
3646                     idx = i;
3647                 }
3648             }
3649             NEW_STREAM(audio, idx);
3650         }
3651
3652         /* subtitles: pick first */
3653         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3654             for (i = 0; i < nb_input_streams; i++)
3655                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3656                     NEW_STREAM(subtitle, i);
3657                     break;
3658                 }
3659         }
3660         /* do something with data? */
3661     } else {
3662         for (i = 0; i < o->nb_stream_maps; i++) {
3663             StreamMap *map = &o->stream_maps[i];
3664
3665             if (map->disabled)
3666                 continue;
3667
3668             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3669             switch (ist->st->codec->codec_type) {
3670             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3671             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3672             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3673             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3674             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3675             default:
3676                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
3677                        map->file_index, map->stream_index);
3678                 exit_program(1);
3679             }
3680
3681             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3682             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3683                                            map->sync_stream_index];
3684             ist->discard = 0;
3685         }
3686     }
3687
3688     /* handle attached files */
3689     for (i = 0; i < o->nb_attachments; i++) {
3690         AVIOContext *pb;
3691         uint8_t *attachment;
3692         const char *p;
3693         int64_t len;
3694
3695         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
3696             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
3697                    o->attachments[i]);
3698