avconv: Set new interrupt callbacks for all AVFormatContexts, use avio_open2() everywhere
[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 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1532 static int output_packet(InputStream *ist, int ist_index,
1533                          OutputStream *ost_table, int nb_ostreams,
1534                          const AVPacket *pkt)
1535 {
1536     AVFormatContext *os;
1537     OutputStream *ost;
1538     int ret = 0, i;
1539     int got_output;
1540     void *buffer_to_free = NULL;
1541     static unsigned int samples_size= 0;
1542     AVSubtitle subtitle, *subtitle_to_free;
1543     int64_t pkt_pts = AV_NOPTS_VALUE;
1544 #if CONFIG_AVFILTER
1545     int frame_available;
1546 #endif
1547     float quality;
1548
1549     AVPacket avpkt;
1550     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1551
1552     if(ist->next_pts == AV_NOPTS_VALUE)
1553         ist->next_pts= ist->pts;
1554
1555     if (pkt == NULL) {
1556         /* EOF handling */
1557         av_init_packet(&avpkt);
1558         avpkt.data = NULL;
1559         avpkt.size = 0;
1560         goto handle_eof;
1561     } else {
1562         avpkt = *pkt;
1563     }
1564
1565     if(pkt->dts != AV_NOPTS_VALUE)
1566         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1567     if(pkt->pts != AV_NOPTS_VALUE)
1568         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1569
1570     //while we have more to decode or while the decoder did output something on EOF
1571     while (avpkt.size > 0 || (!pkt && got_output)) {
1572         uint8_t *data_buf, *decoded_data_buf;
1573         int data_size, decoded_data_size;
1574         AVFrame *decoded_frame, *filtered_frame;
1575     handle_eof:
1576         ist->pts= ist->next_pts;
1577
1578         if(avpkt.size && avpkt.size != pkt->size)
1579             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1580                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1581             ist->showed_multi_packet_warning=1;
1582
1583         /* decode the packet if needed */
1584         decoded_frame    = filtered_frame = NULL;
1585         decoded_data_buf = NULL; /* fail safe */
1586         decoded_data_size= 0;
1587         data_buf  = avpkt.data;
1588         data_size = avpkt.size;
1589         subtitle_to_free = NULL;
1590         if (ist->decoding_needed) {
1591             switch(ist->st->codec->codec_type) {
1592             case AVMEDIA_TYPE_AUDIO:{
1593                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1594                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1595                     av_free(samples);
1596                     samples= av_malloc(samples_size);
1597                 }
1598                 decoded_data_size= samples_size;
1599                     /* XXX: could avoid copy if PCM 16 bits with same
1600                        endianness as CPU */
1601                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1602                                             &avpkt);
1603                 if (ret < 0)
1604                     return ret;
1605                 avpkt.data += ret;
1606                 avpkt.size -= ret;
1607                 data_size   = ret;
1608                 got_output  = decoded_data_size > 0;
1609                 /* Some bug in mpeg audio decoder gives */
1610                 /* decoded_data_size < 0, it seems they are overflows */
1611                 if (!got_output) {
1612                     /* no audio frame */
1613                     continue;
1614                 }
1615                 decoded_data_buf = (uint8_t *)samples;
1616                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1617                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1618                 break;}
1619             case AVMEDIA_TYPE_VIDEO:
1620                     if (!(decoded_frame = avcodec_alloc_frame()))
1621                         return AVERROR(ENOMEM);
1622                     avpkt.pts = pkt_pts;
1623                     avpkt.dts = ist->pts;
1624                     pkt_pts = AV_NOPTS_VALUE;
1625
1626                     ret = avcodec_decode_video2(ist->st->codec,
1627                                                 decoded_frame, &got_output, &avpkt);
1628                     quality = same_quant ? decoded_frame->quality : 0;
1629                     if (ret < 0)
1630                         goto fail;
1631                     if (!got_output) {
1632                         /* no picture yet */
1633                         av_freep(&decoded_frame);
1634                         goto discard_packet;
1635                     }
1636                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1637                                                                  decoded_frame->pkt_dts);
1638                     if (ist->st->codec->time_base.num != 0) {
1639                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1640                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1641                                           ist->st->codec->time_base.num * ticks) /
1642                             ist->st->codec->time_base.den;
1643                     }
1644                     avpkt.size = 0;
1645                     buffer_to_free = NULL;
1646                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1647                     break;
1648             case AVMEDIA_TYPE_SUBTITLE:
1649                 ret = avcodec_decode_subtitle2(ist->st->codec,
1650                                                &subtitle, &got_output, &avpkt);
1651                 if (ret < 0)
1652                     return ret;
1653                 if (!got_output) {
1654                     goto discard_packet;
1655                 }
1656                 subtitle_to_free = &subtitle;
1657                 avpkt.size = 0;
1658                 break;
1659             default:
1660                 return -1;
1661             }
1662         } else {
1663             switch(ist->st->codec->codec_type) {
1664             case AVMEDIA_TYPE_AUDIO:
1665                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1666                     ist->st->codec->sample_rate;
1667                 break;
1668             case AVMEDIA_TYPE_VIDEO:
1669                 if (ist->st->codec->time_base.num != 0) {
1670                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1671                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1672                                       ist->st->codec->time_base.num * ticks) /
1673                         ist->st->codec->time_base.den;
1674                 }
1675                 break;
1676             }
1677             avpkt.size = 0;
1678         }
1679
1680         // preprocess audio (volume)
1681         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1682             if (audio_volume != 256) {
1683                 switch (ist->st->codec->sample_fmt) {
1684                 case AV_SAMPLE_FMT_U8:
1685                 {
1686                     uint8_t *volp = samples;
1687                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1688                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1689                         *volp++ = av_clip_uint8(v);
1690                     }
1691                     break;
1692                 }
1693                 case AV_SAMPLE_FMT_S16:
1694                 {
1695                     int16_t *volp = samples;
1696                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1697                         int v = ((*volp) * audio_volume + 128) >> 8;
1698                         *volp++ = av_clip_int16(v);
1699                     }
1700                     break;
1701                 }
1702                 case AV_SAMPLE_FMT_S32:
1703                 {
1704                     int32_t *volp = samples;
1705                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1706                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1707                         *volp++ = av_clipl_int32(v);
1708                     }
1709                     break;
1710                 }
1711                 case AV_SAMPLE_FMT_FLT:
1712                 {
1713                     float *volp = samples;
1714                     float scale = audio_volume / 256.f;
1715                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1716                         *volp++ *= scale;
1717                     }
1718                     break;
1719                 }
1720                 case AV_SAMPLE_FMT_DBL:
1721                 {
1722                     double *volp = samples;
1723                     double scale = audio_volume / 256.;
1724                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1725                         *volp++ *= scale;
1726                     }
1727                     break;
1728                 }
1729                 default:
1730                     av_log(NULL, AV_LOG_FATAL,
1731                            "Audio volume adjustment on sample format %s is not supported.\n",
1732                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1733                     exit_program(1);
1734                 }
1735             }
1736         }
1737
1738         /* frame rate emulation */
1739         if (input_files[ist->file_index].rate_emu) {
1740             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1741             int64_t now = av_gettime() - ist->start;
1742             if (pts > now)
1743                 usleep(pts - now);
1744         }
1745         /* if output time reached then transcode raw format,
1746            encode packets and output them */
1747         for (i = 0; i < nb_ostreams; i++) {
1748             OutputFile *of = &output_files[ost_table[i].file_index];
1749             int frame_size;
1750
1751             ost = &ost_table[i];
1752             if (ost->source_index != ist_index)
1753                 continue;
1754
1755             if (of->start_time && ist->pts < of->start_time)
1756                 continue;
1757
1758             if (of->recording_time != INT64_MAX &&
1759                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1760                               (AVRational){1, 1000000}) >= 0) {
1761                 ost->is_past_recording_time = 1;
1762                 continue;
1763             }
1764
1765 #if CONFIG_AVFILTER
1766             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1767                 ost->input_video_filter) {
1768                 AVRational sar;
1769                 if (ist->st->sample_aspect_ratio.num)
1770                     sar = ist->st->sample_aspect_ratio;
1771                 else
1772                     sar = ist->st->codec->sample_aspect_ratio;
1773                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1774                 if (!(filtered_frame = avcodec_alloc_frame())) {
1775                     ret = AVERROR(ENOMEM);
1776                     goto fail;
1777                 }
1778             }
1779             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1780                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1781             while (frame_available) {
1782                 AVRational ist_pts_tb;
1783                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1784                     get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1785                 if (ost->picref)
1786                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1787 #else
1788                 filtered_frame = decoded_frame;
1789 #endif
1790                 os = output_files[ost->file_index].ctx;
1791
1792                 /* set the input output pts pairs */
1793                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1794
1795                 if (ost->encoding_needed) {
1796                     av_assert0(ist->decoding_needed);
1797                     switch(ost->st->codec->codec_type) {
1798                     case AVMEDIA_TYPE_AUDIO:
1799                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1800                         break;
1801                     case AVMEDIA_TYPE_VIDEO:
1802 #if CONFIG_AVFILTER
1803                         if (ost->picref->video && !ost->frame_aspect_ratio)
1804                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1805 #endif
1806                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1807                                      same_quant ? quality : ost->st->codec->global_quality);
1808                         if (vstats_filename && frame_size)
1809                             do_video_stats(os, ost, frame_size);
1810                         break;
1811                     case AVMEDIA_TYPE_SUBTITLE:
1812                         do_subtitle_out(os, ost, ist, &subtitle,
1813                                         pkt->pts);
1814                         break;
1815                     default:
1816                         abort();
1817                     }
1818                 } else {
1819                     AVPacket opkt;
1820                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1821
1822                     av_init_packet(&opkt);
1823
1824                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1825                         !ost->copy_initial_nonkeyframes)
1826 #if !CONFIG_AVFILTER
1827                         continue;
1828 #else
1829                         goto cont;
1830 #endif
1831
1832                     /* no reencoding needed : output the packet directly */
1833                     /* force the input stream PTS */
1834
1835                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1836                         audio_size += data_size;
1837                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1838                         video_size += data_size;
1839                         ost->sync_opts++;
1840                     }
1841
1842                     opkt.stream_index= ost->index;
1843                     if(pkt->pts != AV_NOPTS_VALUE)
1844                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1845                     else
1846                         opkt.pts= AV_NOPTS_VALUE;
1847
1848                     if (pkt->dts == AV_NOPTS_VALUE)
1849                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1850                     else
1851                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1852                     opkt.dts -= ost_tb_start_time;
1853
1854                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1855                     opkt.flags= pkt->flags;
1856
1857                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1858                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1859                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1860                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1861                        ) {
1862                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1863                             opkt.destruct= av_destruct_packet;
1864                     } else {
1865                         opkt.data = data_buf;
1866                         opkt.size = data_size;
1867                     }
1868
1869                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1870                     ost->st->codec->frame_number++;
1871                     ost->frame_number++;
1872                     av_free_packet(&opkt);
1873                 }
1874 #if CONFIG_AVFILTER
1875                 cont:
1876                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1877                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1878                 if (ost->picref)
1879                     avfilter_unref_buffer(ost->picref);
1880             }
1881             av_freep(&filtered_frame);
1882 #endif
1883             }
1884
1885 fail:
1886         av_free(buffer_to_free);
1887         /* XXX: allocate the subtitles in the codec ? */
1888         if (subtitle_to_free) {
1889             avsubtitle_free(subtitle_to_free);
1890             subtitle_to_free = NULL;
1891         }
1892         av_freep(&decoded_frame);
1893         if (ret < 0)
1894             return ret;
1895     }
1896  discard_packet:
1897
1898     return 0;
1899 }
1900
1901 static void print_sdp(OutputFile *output_files, int n)
1902 {
1903     char sdp[2048];
1904     int i;
1905     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1906
1907     if (!avc)
1908         exit_program(1);
1909     for (i = 0; i < n; i++)
1910         avc[i] = output_files[i].ctx;
1911
1912     av_sdp_create(avc, n, sdp, sizeof(sdp));
1913     printf("SDP:\n%s\n", sdp);
1914     fflush(stdout);
1915     av_freep(&avc);
1916 }
1917
1918 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1919                              char *error, int error_len)
1920 {
1921     int i;
1922     InputStream *ist = &input_streams[ist_index];
1923     if (ist->decoding_needed) {
1924         AVCodec *codec = ist->dec;
1925         if (!codec) {
1926             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1927                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1928             return AVERROR(EINVAL);
1929         }
1930
1931         /* update requested sample format for the decoder based on the
1932            corresponding encoder sample format */
1933         for (i = 0; i < nb_output_streams; i++) {
1934             OutputStream *ost = &output_streams[i];
1935             if (ost->source_index == ist_index) {
1936                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1937                 break;
1938             }
1939         }
1940
1941         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1942             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1943                     ist->file_index, ist->st->index);
1944             return AVERROR(EINVAL);
1945         }
1946         assert_codec_experimental(ist->st->codec, 0);
1947         assert_avoptions(ist->opts);
1948     }
1949
1950     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;
1951     ist->next_pts = AV_NOPTS_VALUE;
1952     init_pts_correction(&ist->pts_ctx);
1953     ist->is_start = 1;
1954
1955     return 0;
1956 }
1957
1958 static int transcode_init(OutputFile *output_files,
1959                           int nb_output_files,
1960                           InputFile *input_files,
1961                           int nb_input_files)
1962 {
1963     int ret = 0, i, j, k;
1964     AVFormatContext *os;
1965     AVCodecContext *codec, *icodec;
1966     OutputStream *ost;
1967     InputStream *ist;
1968     char error[1024];
1969     int want_sdp = 1;
1970
1971     /* init framerate emulation */
1972     for (i = 0; i < nb_input_files; i++) {
1973         InputFile *ifile = &input_files[i];
1974         if (ifile->rate_emu)
1975             for (j = 0; j < ifile->nb_streams; j++)
1976                 input_streams[j + ifile->ist_index].start = av_gettime();
1977     }
1978
1979     /* output stream init */
1980     for(i=0;i<nb_output_files;i++) {
1981         os = output_files[i].ctx;
1982         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1983             av_dump_format(os, i, os->filename, 1);
1984             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1985             return AVERROR(EINVAL);
1986         }
1987     }
1988
1989     /* for each output stream, we compute the right encoding parameters */
1990     for (i = 0; i < nb_output_streams; i++) {
1991         ost = &output_streams[i];
1992         os = output_files[ost->file_index].ctx;
1993         ist = &input_streams[ost->source_index];
1994
1995         if (ost->attachment_filename)
1996             continue;
1997
1998         codec = ost->st->codec;
1999         icodec = ist->st->codec;
2000
2001         ost->st->disposition = ist->st->disposition;
2002         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2003         codec->chroma_sample_location = icodec->chroma_sample_location;
2004
2005         if (ost->stream_copy) {
2006             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2007
2008             if (extra_size > INT_MAX) {
2009                 return AVERROR(EINVAL);
2010             }
2011
2012             /* if stream_copy is selected, no need to decode or encode */
2013             codec->codec_id = icodec->codec_id;
2014             codec->codec_type = icodec->codec_type;
2015
2016             if(!codec->codec_tag){
2017                 if(   !os->oformat->codec_tag
2018                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2019                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2020                     codec->codec_tag = icodec->codec_tag;
2021             }
2022
2023             codec->bit_rate = icodec->bit_rate;
2024             codec->rc_max_rate    = icodec->rc_max_rate;
2025             codec->rc_buffer_size = icodec->rc_buffer_size;
2026             codec->extradata= av_mallocz(extra_size);
2027             if (!codec->extradata) {
2028                 return AVERROR(ENOMEM);
2029             }
2030             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2031             codec->extradata_size= icodec->extradata_size;
2032             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2033                 codec->time_base = icodec->time_base;
2034                 codec->time_base.num *= icodec->ticks_per_frame;
2035                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2036                           codec->time_base.num, codec->time_base.den, INT_MAX);
2037             }else
2038                 codec->time_base = ist->st->time_base;
2039             switch(codec->codec_type) {
2040             case AVMEDIA_TYPE_AUDIO:
2041                 if(audio_volume != 256) {
2042                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2043                     exit_program(1);
2044                 }
2045                 codec->channel_layout = icodec->channel_layout;
2046                 codec->sample_rate = icodec->sample_rate;
2047                 codec->channels = icodec->channels;
2048                 codec->frame_size = icodec->frame_size;
2049                 codec->audio_service_type = icodec->audio_service_type;
2050                 codec->block_align= icodec->block_align;
2051                 break;
2052             case AVMEDIA_TYPE_VIDEO:
2053                 codec->pix_fmt = icodec->pix_fmt;
2054                 codec->width = icodec->width;
2055                 codec->height = icodec->height;
2056                 codec->has_b_frames = icodec->has_b_frames;
2057                 if (!codec->sample_aspect_ratio.num) {
2058                     codec->sample_aspect_ratio =
2059                     ost->st->sample_aspect_ratio =
2060                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2061                         ist->st->codec->sample_aspect_ratio.num ?
2062                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2063                 }
2064                 break;
2065             case AVMEDIA_TYPE_SUBTITLE:
2066                 codec->width = icodec->width;
2067                 codec->height = icodec->height;
2068                 break;
2069             case AVMEDIA_TYPE_DATA:
2070             case AVMEDIA_TYPE_ATTACHMENT:
2071                 break;
2072             default:
2073                 abort();
2074             }
2075         } else {
2076             if (!ost->enc)
2077                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2078             ist->decoding_needed = 1;
2079             ost->encoding_needed = 1;
2080             switch(codec->codec_type) {
2081             case AVMEDIA_TYPE_AUDIO:
2082                 ost->fifo= av_fifo_alloc(1024);
2083                 if (!ost->fifo) {
2084                     return AVERROR(ENOMEM);
2085                 }
2086                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2087                 if (!codec->sample_rate)
2088                     codec->sample_rate = icodec->sample_rate;
2089                 choose_sample_rate(ost->st, ost->enc);
2090                 codec->time_base = (AVRational){1, codec->sample_rate};
2091                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2092                     codec->sample_fmt = icodec->sample_fmt;
2093                 choose_sample_fmt(ost->st, ost->enc);
2094                 if (!codec->channels)
2095                     codec->channels = icodec->channels;
2096                 codec->channel_layout = icodec->channel_layout;
2097                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2098                     codec->channel_layout = 0;
2099                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2100                 icodec->request_channels = codec->channels;
2101                 ost->resample_sample_fmt  = icodec->sample_fmt;
2102                 ost->resample_sample_rate = icodec->sample_rate;
2103                 ost->resample_channels    = icodec->channels;
2104                 break;
2105             case AVMEDIA_TYPE_VIDEO:
2106                 if (codec->pix_fmt == PIX_FMT_NONE)
2107                     codec->pix_fmt = icodec->pix_fmt;
2108                 choose_pixel_fmt(ost->st, ost->enc);
2109
2110                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2111                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2112                     exit_program(1);
2113                 }
2114
2115                 if (!codec->width || !codec->height) {
2116                     codec->width  = icodec->width;
2117                     codec->height = icodec->height;
2118                 }
2119
2120                 ost->video_resample = codec->width   != icodec->width  ||
2121                                       codec->height  != icodec->height ||
2122                                       codec->pix_fmt != icodec->pix_fmt;
2123                 if (ost->video_resample) {
2124 #if !CONFIG_AVFILTER
2125                     avcodec_get_frame_defaults(&ost->pict_tmp);
2126                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2127                                        codec->width, codec->height)) {
2128                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2129                         exit_program(1);
2130                     }
2131                     ost->img_resample_ctx = sws_getContext(
2132                         icodec->width,
2133                         icodec->height,
2134                         icodec->pix_fmt,
2135                         codec->width,
2136                         codec->height,
2137                         codec->pix_fmt,
2138                         ost->sws_flags, NULL, NULL, NULL);
2139                     if (ost->img_resample_ctx == NULL) {
2140                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2141                         exit_program(1);
2142                     }
2143 #endif
2144                     codec->bits_per_raw_sample= 0;
2145                 }
2146
2147                 ost->resample_height = icodec->height;
2148                 ost->resample_width  = icodec->width;
2149                 ost->resample_pix_fmt= icodec->pix_fmt;
2150
2151                 if (!ost->frame_rate.num)
2152                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2153                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2154                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2155                     ost->frame_rate = ost->enc->supported_framerates[idx];
2156                 }
2157                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2158
2159 #if CONFIG_AVFILTER
2160                 if (configure_video_filters(ist, ost)) {
2161                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2162                     exit(1);
2163                 }
2164 #endif
2165                 break;
2166             case AVMEDIA_TYPE_SUBTITLE:
2167                 break;
2168             default:
2169                 abort();
2170                 break;
2171             }
2172             /* two pass mode */
2173             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2174                 char logfilename[1024];
2175                 FILE *f;
2176
2177                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2178                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2179                          i);
2180                 if (codec->flags & CODEC_FLAG_PASS1) {
2181                     f = fopen(logfilename, "wb");
2182                     if (!f) {
2183                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2184                                logfilename, strerror(errno));
2185                         exit_program(1);
2186                     }
2187                     ost->logfile = f;
2188                 } else {
2189                     char  *logbuffer;
2190                     size_t logbuffer_size;
2191                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2192                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2193                                logfilename);
2194                         exit_program(1);
2195                     }
2196                     codec->stats_in = logbuffer;
2197                 }
2198             }
2199         }
2200         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2201             int size= codec->width * codec->height;
2202             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2203         }
2204     }
2205
2206     if (!bit_buffer)
2207         bit_buffer = av_malloc(bit_buffer_size);
2208     if (!bit_buffer) {
2209         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2210                bit_buffer_size);
2211         return AVERROR(ENOMEM);
2212     }
2213
2214     /* open each encoder */
2215     for (i = 0; i < nb_output_streams; i++) {
2216         ost = &output_streams[i];
2217         if (ost->encoding_needed) {
2218             AVCodec *codec = ost->enc;
2219             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2220             if (!codec) {
2221                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2222                          ost->st->codec->codec_id, ost->file_index, ost->index);
2223                 ret = AVERROR(EINVAL);
2224                 goto dump_format;
2225             }
2226             if (dec->subtitle_header) {
2227                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2228                 if (!ost->st->codec->subtitle_header) {
2229                     ret = AVERROR(ENOMEM);
2230                     goto dump_format;
2231                 }
2232                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2233                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2234             }
2235             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2236                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2237                         ost->file_index, ost->index);
2238                 ret = AVERROR(EINVAL);
2239                 goto dump_format;
2240             }
2241             assert_codec_experimental(ost->st->codec, 1);
2242             assert_avoptions(ost->opts);
2243             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2244                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2245                                              "It takes bits/s as argument, not kbits/s\n");
2246             extra_size += ost->st->codec->extradata_size;
2247
2248             if (ost->st->codec->me_threshold)
2249                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2250         }
2251     }
2252
2253     /* init input streams */
2254     for (i = 0; i < nb_input_streams; i++)
2255         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2256             goto dump_format;
2257
2258     /* discard unused programs */
2259     for (i = 0; i < nb_input_files; i++) {
2260         InputFile *ifile = &input_files[i];
2261         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2262             AVProgram *p = ifile->ctx->programs[j];
2263             int discard  = AVDISCARD_ALL;
2264
2265             for (k = 0; k < p->nb_stream_indexes; k++)
2266                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2267                     discard = AVDISCARD_DEFAULT;
2268                     break;
2269                 }
2270             p->discard = discard;
2271         }
2272     }
2273
2274     /* open files and write file headers */
2275     for (i = 0; i < nb_output_files; i++) {
2276         os = output_files[i].ctx;
2277         os->interrupt_callback = int_cb;
2278         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2279             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2280             ret = AVERROR(EINVAL);
2281             goto dump_format;
2282         }
2283         assert_avoptions(output_files[i].opts);
2284         if (strcmp(os->oformat->name, "rtp")) {
2285             want_sdp = 0;
2286         }
2287     }
2288
2289  dump_format:
2290     /* dump the file output parameters - cannot be done before in case
2291        of stream copy */
2292     for(i=0;i<nb_output_files;i++) {
2293         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2294     }
2295
2296     /* dump the stream mapping */
2297     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2298     for (i = 0; i < nb_output_streams; i++) {
2299         ost = &output_streams[i];
2300
2301         if (ost->attachment_filename) {
2302             /* an attached file */
2303             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2304                    ost->attachment_filename, ost->file_index, ost->index);
2305             continue;
2306         }
2307         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2308                input_streams[ost->source_index].file_index,
2309                input_streams[ost->source_index].st->index,
2310                ost->file_index,
2311                ost->index);
2312         if (ost->sync_ist != &input_streams[ost->source_index])
2313             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2314                    ost->sync_ist->file_index,
2315                    ost->sync_ist->st->index);
2316         if (ost->stream_copy)
2317             av_log(NULL, AV_LOG_INFO, " (copy)");
2318         else
2319             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2320                    input_streams[ost->source_index].dec->name : "?",
2321                    ost->enc ? ost->enc->name : "?");
2322         av_log(NULL, AV_LOG_INFO, "\n");
2323     }
2324
2325     if (ret) {
2326         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2327         return ret;
2328     }
2329
2330     if (want_sdp) {
2331         print_sdp(output_files, nb_output_files);
2332     }
2333
2334     return 0;
2335 }
2336
2337 /*
2338  * The following code is the main loop of the file converter
2339  */
2340 static int transcode(OutputFile *output_files,
2341                      int nb_output_files,
2342                      InputFile *input_files,
2343                      int nb_input_files)
2344 {
2345     int ret, i;
2346     AVFormatContext *is, *os;
2347     OutputStream *ost;
2348     InputStream *ist;
2349     uint8_t *no_packet;
2350     int no_packet_count=0;
2351     int64_t timer_start;
2352
2353     if (!(no_packet = av_mallocz(nb_input_files)))
2354         exit_program(1);
2355
2356     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2357     if (ret < 0)
2358         goto fail;
2359
2360     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2361     term_init();
2362
2363     timer_start = av_gettime();
2364
2365     for(; received_sigterm == 0;) {
2366         int file_index, ist_index;
2367         AVPacket pkt;
2368         int64_t ipts_min;
2369         double opts_min;
2370
2371         ipts_min = INT64_MAX;
2372         opts_min= 1e100;
2373
2374         /* select the stream that we must read now by looking at the
2375            smallest output pts */
2376         file_index = -1;
2377         for (i = 0; i < nb_output_streams; i++) {
2378             OutputFile *of;
2379             int64_t ipts;
2380             double  opts;
2381             ost = &output_streams[i];
2382             of = &output_files[ost->file_index];
2383             os = output_files[ost->file_index].ctx;
2384             ist = &input_streams[ost->source_index];
2385             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2386                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2387                 continue;
2388             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2389             ipts = ist->pts;
2390             if (!input_files[ist->file_index].eof_reached){
2391                 if(ipts < ipts_min) {
2392                     ipts_min = ipts;
2393                     if(input_sync ) file_index = ist->file_index;
2394                 }
2395                 if(opts < opts_min) {
2396                     opts_min = opts;
2397                     if(!input_sync) file_index = ist->file_index;
2398                 }
2399             }
2400             if (ost->frame_number >= ost->max_frames) {
2401                 int j;
2402                 for (j = 0; j < of->ctx->nb_streams; j++)
2403                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2404                 continue;
2405             }
2406         }
2407         /* if none, if is finished */
2408         if (file_index < 0) {
2409             if(no_packet_count){
2410                 no_packet_count=0;
2411                 memset(no_packet, 0, nb_input_files);
2412                 usleep(10000);
2413                 continue;
2414             }
2415             break;
2416         }
2417
2418         /* read a frame from it and output it in the fifo */
2419         is = input_files[file_index].ctx;
2420         ret= av_read_frame(is, &pkt);
2421         if(ret == AVERROR(EAGAIN)){
2422             no_packet[file_index]=1;
2423             no_packet_count++;
2424             continue;
2425         }
2426         if (ret < 0) {
2427             input_files[file_index].eof_reached = 1;
2428             if (opt_shortest)
2429                 break;
2430             else
2431                 continue;
2432         }
2433
2434         no_packet_count=0;
2435         memset(no_packet, 0, nb_input_files);
2436
2437         if (do_pkt_dump) {
2438             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2439                              is->streams[pkt.stream_index]);
2440         }
2441         /* the following test is needed in case new streams appear
2442            dynamically in stream : we ignore them */
2443         if (pkt.stream_index >= input_files[file_index].nb_streams)
2444             goto discard_packet;
2445         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2446         ist = &input_streams[ist_index];
2447         if (ist->discard)
2448             goto discard_packet;
2449
2450         if (pkt.dts != AV_NOPTS_VALUE)
2451             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2452         if (pkt.pts != AV_NOPTS_VALUE)
2453             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2454
2455         if(pkt.pts != AV_NOPTS_VALUE)
2456             pkt.pts *= ist->ts_scale;
2457         if(pkt.dts != AV_NOPTS_VALUE)
2458             pkt.dts *= ist->ts_scale;
2459
2460 //        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);
2461         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2462             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2463             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2464             int64_t delta= pkt_dts - ist->next_pts;
2465             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2466                 input_files[ist->file_index].ts_offset -= delta;
2467                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2468                        delta, input_files[ist->file_index].ts_offset);
2469                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2470                 if(pkt.pts != AV_NOPTS_VALUE)
2471                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2472             }
2473         }
2474
2475         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2476         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2477
2478             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2479                    ist->file_index, ist->st->index);
2480             if (exit_on_error)
2481                 exit_program(1);
2482             av_free_packet(&pkt);
2483             continue;
2484         }
2485
2486     discard_packet:
2487         av_free_packet(&pkt);
2488
2489         /* dump report by using the output first video and audio streams */
2490         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2491     }
2492
2493     /* at the end of stream, we must flush the decoder buffers */
2494     for (i = 0; i < nb_input_streams; i++) {
2495         ist = &input_streams[i];
2496         if (ist->decoding_needed) {
2497             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2498         }
2499     }
2500     flush_encoders(output_streams, nb_output_streams);
2501
2502     term_exit();
2503
2504     /* write the trailer if needed and close file */
2505     for(i=0;i<nb_output_files;i++) {
2506         os = output_files[i].ctx;
2507         av_write_trailer(os);
2508     }
2509
2510     /* dump report by using the first video and audio streams */
2511     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2512
2513     /* close each encoder */
2514     for (i = 0; i < nb_output_streams; i++) {
2515         ost = &output_streams[i];
2516         if (ost->encoding_needed) {
2517             av_freep(&ost->st->codec->stats_in);
2518             avcodec_close(ost->st->codec);
2519         }
2520 #if CONFIG_AVFILTER
2521         avfilter_graph_free(&ost->graph);
2522 #endif
2523     }
2524
2525     /* close each decoder */
2526     for (i = 0; i < nb_input_streams; i++) {
2527         ist = &input_streams[i];
2528         if (ist->decoding_needed) {
2529             avcodec_close(ist->st->codec);
2530         }
2531     }
2532
2533     /* finished ! */
2534     ret = 0;
2535
2536  fail:
2537     av_freep(&bit_buffer);
2538     av_freep(&no_packet);
2539
2540     if (output_streams) {
2541         for (i = 0; i < nb_output_streams; i++) {
2542             ost = &output_streams[i];
2543             if (ost) {
2544                 if (ost->stream_copy)
2545                     av_freep(&ost->st->codec->extradata);
2546                 if (ost->logfile) {
2547                     fclose(ost->logfile);
2548                     ost->logfile = NULL;
2549                 }
2550                 av_fifo_free(ost->fifo); /* works even if fifo is not
2551                                              initialized but set to zero */
2552                 av_freep(&ost->st->codec->subtitle_header);
2553                 av_free(ost->pict_tmp.data[0]);
2554                 av_free(ost->forced_kf_pts);
2555                 if (ost->video_resample)
2556                     sws_freeContext(ost->img_resample_ctx);
2557                 if (ost->resample)
2558                     audio_resample_close(ost->resample);
2559                 if (ost->reformat_ctx)
2560                     av_audio_convert_free(ost->reformat_ctx);
2561                 av_dict_free(&ost->opts);
2562             }
2563         }
2564     }
2565     return ret;
2566 }
2567
2568 static double parse_frame_aspect_ratio(const char *arg)
2569 {
2570     int x = 0, y = 0;
2571     double ar = 0;
2572     const char *p;
2573     char *end;
2574
2575     p = strchr(arg, ':');
2576     if (p) {
2577         x = strtol(arg, &end, 10);
2578         if (end == p)
2579             y = strtol(end+1, &end, 10);
2580         if (x > 0 && y > 0)
2581             ar = (double)x / (double)y;
2582     } else
2583         ar = strtod(arg, NULL);
2584
2585     if (!ar) {
2586         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2587         exit_program(1);
2588     }
2589     return ar;
2590 }
2591
2592 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2593 {
2594     return parse_option(o, "codec:a", arg, options);
2595 }
2596
2597 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2598 {
2599     return parse_option(o, "codec:v", arg, options);
2600 }
2601
2602 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2603 {
2604     return parse_option(o, "codec:s", arg, options);
2605 }
2606
2607 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2608 {
2609     return parse_option(o, "codec:d", arg, options);
2610 }
2611
2612 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2613 {
2614     StreamMap *m = NULL;
2615     int i, negative = 0, file_idx;
2616     int sync_file_idx = -1, sync_stream_idx;
2617     char *p, *sync;
2618     char *map;
2619
2620     if (*arg == '-') {
2621         negative = 1;
2622         arg++;
2623     }
2624     map = av_strdup(arg);
2625
2626     /* parse sync stream first, just pick first matching stream */
2627     if (sync = strchr(map, ',')) {
2628         *sync = 0;
2629         sync_file_idx = strtol(sync + 1, &sync, 0);
2630         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2631             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2632             exit_program(1);
2633         }
2634         if (*sync)
2635             sync++;
2636         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2637             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2638                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2639                 sync_stream_idx = i;
2640                 break;
2641             }
2642         if (i == input_files[sync_file_idx].nb_streams) {
2643             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2644                                        "match any streams.\n", arg);
2645             exit_program(1);
2646         }
2647     }
2648
2649
2650     file_idx = strtol(map, &p, 0);
2651     if (file_idx >= nb_input_files || file_idx < 0) {
2652         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2653         exit_program(1);
2654     }
2655     if (negative)
2656         /* disable some already defined maps */
2657         for (i = 0; i < o->nb_stream_maps; i++) {
2658             m = &o->stream_maps[i];
2659             if (file_idx == m->file_index &&
2660                 check_stream_specifier(input_files[m->file_index].ctx,
2661                                        input_files[m->file_index].ctx->streams[m->stream_index],
2662                                        *p == ':' ? p + 1 : p) > 0)
2663                 m->disabled = 1;
2664         }
2665     else
2666         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2667             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2668                         *p == ':' ? p + 1 : p) <= 0)
2669                 continue;
2670             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2671                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2672             m = &o->stream_maps[o->nb_stream_maps - 1];
2673
2674             m->file_index   = file_idx;
2675             m->stream_index = i;
2676
2677             if (sync_file_idx >= 0) {
2678                 m->sync_file_index   = sync_file_idx;
2679                 m->sync_stream_index = sync_stream_idx;
2680             } else {
2681                 m->sync_file_index   = file_idx;
2682                 m->sync_stream_index = i;
2683             }
2684         }
2685
2686     if (!m) {
2687         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2688         exit_program(1);
2689     }
2690
2691     av_freep(&map);
2692     return 0;
2693 }
2694
2695 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2696 {
2697     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2698                                 &o->nb_attachments, o->nb_attachments + 1);
2699     o->attachments[o->nb_attachments - 1] = arg;
2700     return 0;
2701 }
2702
2703 static void parse_meta_type(char *arg, char *type, int *index)
2704 {
2705     if (*arg) {
2706         *type = *arg;
2707         switch (*arg) {
2708         case 'g':
2709             break;
2710         case 's':
2711         case 'c':
2712         case 'p':
2713             if (*(++arg) == ':')
2714                 *index = strtol(++arg, NULL, 0);
2715             break;
2716         default:
2717             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2718             exit_program(1);
2719         }
2720     } else
2721         *type = 'g';
2722 }
2723
2724 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2725 {
2726     MetadataMap *m, *m1;
2727     char *p;
2728
2729     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2730                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2731
2732     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2733     m->file = strtol(arg, &p, 0);
2734     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2735
2736     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2737     if (p = strchr(opt, ':'))
2738         parse_meta_type(p + 1, &m1->type, &m1->index);
2739     else
2740         m1->type = 'g';
2741
2742     if (m->type == 'g' || m1->type == 'g')
2743         o->metadata_global_manual = 1;
2744     if (m->type == 's' || m1->type == 's')
2745         o->metadata_streams_manual = 1;
2746     if (m->type == 'c' || m1->type == 'c')
2747         o->metadata_chapters_manual = 1;
2748
2749     return 0;
2750 }
2751
2752 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2753 {
2754     const char *codec_string = encoder ? "encoder" : "decoder";
2755     AVCodec *codec;
2756
2757     codec = encoder ?
2758         avcodec_find_encoder_by_name(name) :
2759         avcodec_find_decoder_by_name(name);
2760     if(!codec) {
2761         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2762         exit_program(1);
2763     }
2764     if(codec->type != type) {
2765         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2766         exit_program(1);
2767     }
2768     return codec;
2769 }
2770
2771 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
2772 {
2773     char *codec_name = NULL;
2774
2775     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2776     if (codec_name) {
2777         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
2778         st->codec->codec_id = codec->id;
2779         return codec;
2780     } else
2781         return avcodec_find_decoder(st->codec->codec_id);
2782 }
2783
2784 /**
2785  * Add all the streams from the given input file to the global
2786  * list of input streams.
2787  */
2788 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2789 {
2790     int i, rfps, rfps_base;
2791
2792     for (i = 0; i < ic->nb_streams; i++) {
2793         AVStream *st = ic->streams[i];
2794         AVCodecContext *dec = st->codec;
2795         InputStream *ist;
2796
2797         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2798         ist = &input_streams[nb_input_streams - 1];
2799         ist->st = st;
2800         ist->file_index = nb_input_files;
2801         ist->discard = 1;
2802         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2803
2804         ist->ts_scale = 1.0;
2805         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
2806
2807         ist->dec = choose_decoder(o, ic, st);
2808
2809         switch (dec->codec_type) {
2810         case AVMEDIA_TYPE_AUDIO:
2811             if (o->audio_disable)
2812                 st->discard= AVDISCARD_ALL;
2813             break;
2814         case AVMEDIA_TYPE_VIDEO:
2815             rfps      = ic->streams[i]->r_frame_rate.num;
2816             rfps_base = ic->streams[i]->r_frame_rate.den;
2817             if (dec->lowres) {
2818                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2819                 dec->height >>= dec->lowres;
2820                 dec->width  >>= dec->lowres;
2821             }
2822
2823             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2824
2825                 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",
2826                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2827                        (float)rfps / rfps_base, rfps, rfps_base);
2828             }
2829
2830             if (o->video_disable)
2831                 st->discard= AVDISCARD_ALL;
2832             else if(video_discard)
2833                 st->discard= video_discard;
2834             break;
2835         case AVMEDIA_TYPE_DATA:
2836             break;
2837         case AVMEDIA_TYPE_SUBTITLE:
2838             if (o->subtitle_disable)
2839                 st->discard = AVDISCARD_ALL;
2840             break;
2841         case AVMEDIA_TYPE_ATTACHMENT:
2842         case AVMEDIA_TYPE_UNKNOWN:
2843             break;
2844         default:
2845             abort();
2846         }
2847     }
2848 }
2849
2850 static void assert_file_overwrite(const char *filename)
2851 {
2852     if (!file_overwrite &&
2853         (strchr(filename, ':') == NULL || filename[1] == ':' ||
2854          av_strstart(filename, "file:", NULL))) {
2855         if (avio_check(filename, 0) == 0) {
2856             if (!using_stdin) {
2857                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
2858                 fflush(stderr);
2859                 if (!read_yesno()) {
2860                     fprintf(stderr, "Not overwriting - exiting\n");
2861                     exit_program(1);
2862                 }
2863             }
2864             else {
2865                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
2866                 exit_program(1);
2867             }
2868         }
2869     }
2870 }
2871
2872 static void dump_attachment(AVStream *st, const char *filename)
2873 {
2874     int ret;
2875     AVIOContext *out = NULL;
2876     AVDictionaryEntry *e;
2877
2878     if (!st->codec->extradata_size) {
2879         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
2880                nb_input_files - 1, st->index);
2881         return;
2882     }
2883     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
2884         filename = e->value;
2885     if (!*filename) {
2886         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
2887                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
2888         exit_program(1);
2889     }
2890
2891     assert_file_overwrite(filename);
2892
2893     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
2894         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
2895                filename);
2896         exit_program(1);
2897     }
2898
2899     avio_write(out, st->codec->extradata, st->codec->extradata_size);
2900     avio_flush(out);
2901     avio_close(out);
2902 }
2903
2904 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2905 {
2906     AVFormatContext *ic;
2907     AVInputFormat *file_iformat = NULL;
2908     int err, i, ret;
2909     int64_t timestamp;
2910     uint8_t buf[128];
2911     AVDictionary **opts;
2912     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2913
2914     if (o->format) {
2915         if (!(file_iformat = av_find_input_format(o->format))) {
2916             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2917             exit_program(1);
2918         }
2919     }
2920
2921     if (!strcmp(filename, "-"))
2922         filename = "pipe:";
2923
2924     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2925                     !strcmp(filename, "/dev/stdin");
2926
2927     /* get default parameters from command line */
2928     ic = avformat_alloc_context();
2929     if (!ic) {
2930         print_error(filename, AVERROR(ENOMEM));
2931         exit_program(1);
2932     }
2933     if (o->nb_audio_sample_rate) {
2934         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2935         av_dict_set(&format_opts, "sample_rate", buf, 0);
2936     }
2937     if (o->nb_audio_channels) {
2938         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2939         av_dict_set(&format_opts, "channels", buf, 0);
2940     }
2941     if (o->nb_frame_rates) {
2942         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2943     }
2944     if (o->nb_frame_sizes) {
2945         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2946     }
2947     if (o->nb_frame_pix_fmts)
2948         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2949
2950     ic->flags |= AVFMT_FLAG_NONBLOCK;
2951     ic->interrupt_callback = int_cb;
2952
2953     /* open the input file with generic libav function */
2954     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2955     if (err < 0) {
2956         print_error(filename, err);
2957         exit_program(1);
2958     }
2959     assert_avoptions(format_opts);
2960
2961     /* apply forced codec ids */
2962     for (i = 0; i < ic->nb_streams; i++)
2963         choose_decoder(o, ic, ic->streams[i]);
2964
2965     /* Set AVCodecContext options for avformat_find_stream_info */
2966     opts = setup_find_stream_info_opts(ic, codec_opts);
2967     orig_nb_streams = ic->nb_streams;
2968
2969     /* If not enough info to get the stream parameters, we decode the
2970        first frames to get it. (used in mpeg case for example) */
2971     ret = avformat_find_stream_info(ic, opts);
2972     if (ret < 0) {
2973         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
2974         av_close_input_file(ic);
2975         exit_program(1);
2976     }
2977
2978     timestamp = o->start_time;
2979     /* add the stream start time */
2980     if (ic->start_time != AV_NOPTS_VALUE)
2981         timestamp += ic->start_time;
2982
2983     /* if seeking requested, we execute it */
2984     if (o->start_time != 0) {
2985         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2986         if (ret < 0) {
2987             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2988                    filename, (double)timestamp / AV_TIME_BASE);
2989         }
2990     }
2991
2992     /* update the current parameters so that they match the one of the input stream */
2993     add_input_streams(o, ic);
2994
2995     /* dump the file content */
2996     av_dump_format(ic, nb_input_files, filename, 0);
2997
2998     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2999     input_files[nb_input_files - 1].ctx        = ic;
3000     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3001     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3002     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3003     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3004
3005     for (i = 0; i < o->nb_dump_attachment; i++) {
3006         int j;
3007
3008         for (j = 0; j < ic->nb_streams; j++) {
3009             AVStream *st = ic->streams[j];
3010
3011             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3012                 dump_attachment(st, o->dump_attachment[i].u.str);
3013         }
3014     }
3015
3016     for (i = 0; i < orig_nb_streams; i++)
3017         av_dict_free(&opts[i]);
3018     av_freep(&opts);
3019
3020     reset_options(o);
3021     return 0;
3022 }
3023
3024 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3025                                     AVCodecContext *avctx)
3026 {
3027     char *p;
3028     int n = 1, i;
3029     int64_t t;
3030
3031     for (p = kf; *p; p++)
3032         if (*p == ',')
3033             n++;
3034     ost->forced_kf_count = n;
3035     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3036     if (!ost->forced_kf_pts) {
3037         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3038         exit_program(1);
3039     }
3040     for (i = 0; i < n; i++) {
3041         p = i ? strchr(p, ',') + 1 : kf;
3042         t = parse_time_or_die("force_key_frames", p, 1);
3043         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3044     }
3045 }
3046
3047 static uint8_t *get_line(AVIOContext *s)
3048 {
3049     AVIOContext *line;
3050     uint8_t *buf;
3051     char c;
3052
3053     if (avio_open_dyn_buf(&line) < 0) {
3054         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3055         exit_program(1);
3056     }
3057
3058     while ((c = avio_r8(s)) && c != '\n')
3059         avio_w8(line, c);
3060     avio_w8(line, 0);
3061     avio_close_dyn_buf(line, &buf);
3062
3063     return buf;
3064 }
3065
3066 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3067 {
3068     int i, ret = 1;
3069     char filename[1000];
3070     const char *base[3] = { getenv("AVCONV_DATADIR"),
3071                             getenv("HOME"),
3072                             AVCONV_DATADIR,
3073                             };
3074
3075     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3076         if (!base[i])
3077             continue;
3078         if (codec_name) {
3079             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3080                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3081             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3082         }
3083         if (ret) {
3084             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3085                      i != 1 ? "" : "/.avconv", preset_name);
3086             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3087         }
3088     }
3089     return ret;
3090 }
3091
3092 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3093 {
3094     char *codec_name = NULL;
3095
3096     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3097     if (!codec_name) {
3098         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3099                                                   NULL, ost->st->codec->codec_type);
3100         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3101     } else if (!strcmp(codec_name, "copy"))
3102         ost->stream_copy = 1;
3103     else {
3104         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3105         ost->st->codec->codec_id = ost->enc->id;
3106     }
3107 }
3108
3109 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3110 {
3111     OutputStream *ost;
3112     AVStream *st = avformat_new_stream(oc, NULL);
3113     int idx      = oc->nb_streams - 1, ret = 0;
3114     char *bsf = NULL, *next, *codec_tag = NULL;
3115     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3116     double qscale = -1;
3117     char *buf = NULL, *arg = NULL, *preset = NULL;
3118     AVIOContext *s = NULL;
3119
3120     if (!st) {
3121         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3122         exit_program(1);
3123     }
3124
3125     if (oc->nb_streams - 1 < o->nb_streamid_map)
3126         st->id = o->streamid_map[oc->nb_streams - 1];
3127
3128     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3129                                 nb_output_streams + 1);
3130     ost = &output_streams[nb_output_streams - 1];
3131     ost->file_index = nb_output_files;
3132     ost->index = idx;
3133     ost->st    = st;
3134     st->codec->codec_type = type;
3135     choose_encoder(o, oc, ost);
3136     if (ost->enc) {
3137         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3138     }
3139
3140     avcodec_get_context_defaults3(st->codec, ost->enc);
3141     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3142
3143     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3144     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3145         do  {
3146             buf = get_line(s);
3147             if (!buf[0] || buf[0] == '#') {
3148                 av_free(buf);
3149                 continue;
3150             }
3151             if (!(arg = strchr(buf, '='))) {
3152                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3153                 exit_program(1);
3154             }
3155             *arg++ = 0;
3156             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3157             av_free(buf);
3158         } while (!s->eof_reached);
3159         avio_close(s);
3160     }
3161     if (ret) {
3162         av_log(NULL, AV_LOG_FATAL,
3163                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3164                preset, ost->file_index, ost->index);
3165         exit_program(1);
3166     }
3167
3168     ost->max_frames = INT64_MAX;
3169     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3170
3171     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3172     while (bsf) {
3173         if (next = strchr(bsf, ','))
3174             *next++ = 0;
3175         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3176             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3177             exit_program(1);
3178         }
3179         if (bsfc_prev)
3180             bsfc_prev->next = bsfc;
3181         else
3182             ost->bitstream_filters = bsfc;
3183
3184         bsfc_prev = bsfc;
3185         bsf       = next;
3186     }
3187
3188     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3189     if (codec_tag) {
3190         uint32_t tag = strtol(codec_tag, &next, 0);
3191         if (*next)
3192             tag = AV_RL32(codec_tag);
3193         st->codec->codec_tag = tag;
3194     }
3195
3196     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3197     if (qscale >= 0 || same_quant) {
3198         st->codec->flags |= CODEC_FLAG_QSCALE;
3199         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3200     }
3201
3202     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3203         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3204
3205     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3206     return ost;
3207 }
3208
3209 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3210 {
3211     int i;
3212     const char *p = str;
3213     for(i = 0;; i++) {
3214         dest[i] = atoi(p);
3215         if(i == 63)
3216             break;
3217         p = strchr(p, ',');
3218         if(!p) {
3219             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3220             exit_program(1);
3221         }
3222         p++;
3223     }
3224 }
3225
3226 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3227 {
3228     AVStream *st;
3229     OutputStream *ost;
3230     AVCodecContext *video_enc;
3231
3232     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3233     st  = ost->st;
3234     video_enc = st->codec;
3235
3236     if (!ost->stream_copy) {
3237         const char *p = NULL;
3238         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3239         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3240         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3241         int i;
3242
3243         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3244         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3245             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3246             exit_program(1);
3247         }
3248
3249         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3250         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3251             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3252             exit_program(1);
3253         }
3254
3255         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3256         if (frame_aspect_ratio)
3257             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3258
3259         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3260         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3261             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3262             exit_program(1);
3263         }
3264         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3265
3266         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3267         if (intra_matrix) {
3268             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3269                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3270                 exit_program(1);
3271             }
3272             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3273         }
3274         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3275         if (inter_matrix) {
3276             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3277                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3278                 exit_program(1);
3279             }
3280             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3281         }
3282
3283         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3284         for(i=0; p; i++){
3285             int start, end, q;
3286             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3287             if(e!=3){
3288                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3289                 exit_program(1);
3290             }
3291             video_enc->rc_override=
3292                 av_realloc(video_enc->rc_override,
3293                            sizeof(RcOverride)*(i+1));
3294             video_enc->rc_override[i].start_frame= start;
3295             video_enc->rc_override[i].end_frame  = end;
3296             if(q>0){
3297                 video_enc->rc_override[i].qscale= q;
3298                 video_enc->rc_override[i].quality_factor= 1.0;
3299             }
3300             else{
3301                 video_enc->rc_override[i].qscale= 0;
3302                 video_enc->rc_override[i].quality_factor= -q/100.0;
3303             }
3304             p= strchr(p, '/');
3305             if(p) p++;
3306         }
3307         video_enc->rc_override_count=i;
3308         if (!video_enc->rc_initial_buffer_occupancy)
3309             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3310         video_enc->intra_dc_precision= intra_dc_precision - 8;
3311
3312         /* two pass mode */
3313         if (do_pass) {
3314             if (do_pass == 1) {
3315                 video_enc->flags |= CODEC_FLAG_PASS1;
3316             } else {
3317                 video_enc->flags |= CODEC_FLAG_PASS2;
3318             }
3319         }
3320
3321         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3322         if (forced_key_frames)
3323             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3324
3325         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3326
3327         ost->top_field_first = -1;
3328         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3329
3330         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3331
3332 #if CONFIG_AVFILTER
3333         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3334         if (filters)
3335             ost->avfilter = av_strdup(filters);
3336 #endif
3337     }
3338
3339     return ost;
3340 }
3341
3342 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3343 {
3344     AVStream *st;
3345     OutputStream *ost;
3346     AVCodecContext *audio_enc;
3347
3348     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3349     st  = ost->st;
3350
3351     audio_enc = st->codec;
3352     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3353
3354     if (!ost->stream_copy) {
3355         char *sample_fmt = NULL;
3356
3357         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3358
3359         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3360         if (sample_fmt &&
3361             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3362             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3363             exit_program(1);
3364         }
3365
3366         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3367     }
3368
3369     return ost;
3370 }
3371
3372 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3373 {
3374     OutputStream *ost;
3375
3376     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3377     if (!ost->stream_copy) {
3378         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3379         exit_program(1);
3380     }
3381
3382     return ost;
3383 }
3384
3385 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3386 {
3387     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3388     ost->stream_copy = 1;
3389     return ost;
3390 }
3391
3392 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3393 {
3394     AVStream *st;
3395     OutputStream *ost;
3396     AVCodecContext *subtitle_enc;
3397
3398     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3399     st  = ost->st;
3400     subtitle_enc = st->codec;
3401
3402     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3403
3404     return ost;
3405 }
3406
3407 /* arg format is "output-stream-index:streamid-value". */
3408 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3409 {
3410     int idx;
3411     char *p;
3412     char idx_str[16];
3413
3414     av_strlcpy(idx_str, arg, sizeof(idx_str));
3415     p = strchr(idx_str, ':');
3416     if (!p) {
3417         av_log(NULL, AV_LOG_FATAL,
3418                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3419                arg, opt);
3420         exit_program(1);
3421     }
3422     *p++ = '\0';
3423     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3424     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3425     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3426     return 0;
3427 }
3428
3429 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3430 {
3431     AVFormatContext *is = ifile->ctx;
3432     AVFormatContext *os = ofile->ctx;
3433     int i;
3434
3435     for (i = 0; i < is->nb_chapters; i++) {
3436         AVChapter *in_ch = is->chapters[i], *out_ch;
3437         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3438                                       AV_TIME_BASE_Q, in_ch->time_base);
3439         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3440                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3441
3442
3443         if (in_ch->end < ts_off)
3444             continue;
3445         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3446             break;
3447
3448         out_ch = av_mallocz(sizeof(AVChapter));
3449         if (!out_ch)
3450             return AVERROR(ENOMEM);
3451
3452         out_ch->id        = in_ch->id;
3453         out_ch->time_base = in_ch->time_base;
3454         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3455         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3456
3457         if (copy_metadata)
3458             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3459
3460         os->nb_chapters++;
3461         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3462         if (!os->chapters)
3463             return AVERROR(ENOMEM);
3464         os->chapters[os->nb_chapters - 1] = out_ch;
3465     }
3466     return 0;
3467 }
3468
3469 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3470 {
3471     int i, err;
3472     AVFormatContext *ic = avformat_alloc_context();
3473
3474     ic->interrupt_callback = int_cb;
3475     err = avformat_open_input(&ic, filename, NULL, NULL);
3476     if (err < 0)
3477         return err;
3478     /* copy stream format */
3479     for(i=0;i<ic->nb_streams;i++) {
3480         AVStream *st;
3481         OutputStream *ost;
3482         AVCodec *codec;
3483
3484         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3485         ost   = new_output_stream(o, s, codec->type);
3486         st    = ost->st;
3487
3488         // FIXME: a more elegant solution is needed
3489         memcpy(st, ic->streams[i], sizeof(AVStream));
3490         st->info = NULL;
3491         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3492
3493         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3494             choose_sample_fmt(st, codec);
3495         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3496             choose_pixel_fmt(st, codec);
3497     }
3498
3499     av_close_input_file(ic);
3500     return 0;
3501 }
3502
3503 static void opt_output_file(void *optctx, const char *filename)
3504 {
3505     OptionsContext *o = optctx;
3506     AVFormatContext *oc;
3507     int i, err;
3508     AVOutputFormat *file_oformat;
3509     OutputStream *ost;
3510     InputStream  *ist;
3511
3512     if (!strcmp(filename, "-"))
3513         filename = "pipe:";
3514
3515     oc = avformat_alloc_context();
3516     if (!oc) {
3517         print_error(filename, AVERROR(ENOMEM));
3518         exit_program(1);
3519     }
3520
3521     if (o->format) {
3522         file_oformat = av_guess_format(o->format, NULL, NULL);
3523         if (!file_oformat) {
3524             av_log(NULL, AV_LOG_FATAL, "Requested output format '%s' is not a suitable output format\n", o->format);
3525             exit_program(1);
3526         }
3527     } else {
3528         file_oformat = av_guess_format(NULL, filename, NULL);
3529         if (!file_oformat) {
3530             av_log(NULL, AV_LOG_FATAL, "Unable to find a suitable output format for '%s'\n",
3531                    filename);
3532             exit_program(1);
3533         }
3534     }
3535
3536     oc->oformat = file_oformat;
3537     oc->interrupt_callback = int_cb;
3538     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3539
3540     if (!strcmp(file_oformat->name, "ffm") &&
3541         av_strstart(filename, "http:", NULL)) {
3542         /* special case for files sent to avserver: we get the stream
3543            parameters from avserver */
3544         int err = read_avserver_streams(o, oc, filename);
3545         if (err < 0) {
3546             print_error(filename, err);
3547             exit_program(1);
3548         }
3549     } else if (!o->nb_stream_maps) {
3550         /* pick the "best" stream of each type */
3551 #define NEW_STREAM(type, index)\
3552         if (index >= 0) {\
3553             ost = new_ ## type ## _stream(o, oc);\
3554             ost->source_index = index;\
3555             ost->sync_ist     = &input_streams[index];\
3556             input_streams[index].discard = 0;\
3557         }
3558
3559         /* video: highest resolution */
3560         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3561             int area = 0, idx = -1;
3562             for (i = 0; i < nb_input_streams; i++) {
3563                 ist = &input_streams[i];
3564                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3565                     ist->st->codec->width * ist->st->codec->height > area) {
3566                     area = ist->st->codec->width * ist->st->codec->height;
3567                     idx = i;
3568                 }
3569             }
3570             NEW_STREAM(video, idx);
3571         }
3572
3573         /* audio: most channels */
3574         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3575             int channels = 0, idx = -1;
3576             for (i = 0; i < nb_input_streams; i++) {
3577                 ist = &input_streams[i];
3578                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3579                     ist->st->codec->channels > channels) {
3580                     channels = ist->st->codec->channels;
3581                     idx = i;
3582                 }
3583             }
3584             NEW_STREAM(audio, idx);
3585         }
3586
3587         /* subtitles: pick first */
3588         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3589             for (i = 0; i < nb_input_streams; i++)
3590                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3591                     NEW_STREAM(subtitle, i);
3592                     break;
3593                 }
3594         }
3595         /* do something with data? */
3596     } else {
3597         for (i = 0; i < o->nb_stream_maps; i++) {
3598             StreamMap *map = &o->stream_maps[i];
3599
3600             if (map->disabled)
3601                 continue;
3602
3603             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3604             switch (ist->st->codec->codec_type) {
3605             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3606             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3607             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3608             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3609             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3610             default:
3611                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
3612                        map->file_index, map->stream_index);
3613                 exit_program(1);
3614             }
3615
3616             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3617             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3618                                            map->sync_stream_index];
3619             ist->discard = 0;
3620         }
3621     }
3622
3623     /* handle attached files */
3624     for (i = 0; i < o->nb_attachments; i++) {
3625         AVIOContext *pb;
3626         uint8_t *attachment;
3627         const char *p;
3628         int64_t len;
3629
3630         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
3631             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
3632                    o->attachments[i]);
3633             exit_program(1);
3634         }
3635         if ((len = avio_size(pb)) <= 0) {
3636             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
3637                    o->attachments[i]);
3638             exit_program(1);
3639         }
3640         if (!(attachment = av_malloc(len))) {