ffprobe: redesign json_escape_str(), to make use of a global buffer
[ffmpeg.git] / avconv.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/buffersink.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "avconv";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
113
114 static int frame_bits_per_raw_sample = 0;
115 static int video_discard = 0;
116 static int same_quant = 0;
117 static int do_deinterlace = 0;
118 static int intra_dc_precision = 8;
119 static int qp_hist = 0;
120
121 static int file_overwrite = 0;
122 static int do_benchmark = 0;
123 static int do_hex_dump = 0;
124 static int do_pkt_dump = 0;
125 static int do_pass = 0;
126 static const char *pass_logfilename_prefix;
127 static int video_sync_method= -1;
128 static int audio_sync_method= 0;
129 static float audio_drift_threshold= 0.1;
130 static int copy_ts= 0;
131 static int copy_tb= 0;
132 static int opt_shortest = 0;
133 static char *vstats_filename;
134 static FILE *vstats_file;
135 static int copy_initial_nonkeyframes = 0;
136
137 static int audio_volume = 256;
138
139 static int exit_on_error = 0;
140 static int using_stdin = 0;
141 static int run_as_daemon  = 0;
142 static int q_pressed = 0;
143 static int64_t video_size = 0;
144 static int64_t audio_size = 0;
145 static int64_t extra_size = 0;
146 static int nb_frames_dup = 0;
147 static int nb_frames_drop = 0;
148 static int input_sync;
149
150 static float dts_delta_threshold = 10;
151
152 static int print_stats = 1;
153
154 static uint8_t *audio_buf;
155 static uint8_t *audio_out;
156 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
157
158 static void *samples;
159
160 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
161
162 typedef struct InputStream {
163     int file_index;
164     AVStream *st;
165     int discard;             /* true if stream data should be discarded */
166     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
167     AVCodec *dec;
168
169     int64_t       start;     /* time when read started */
170     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
171                                 is not defined */
172     int64_t       pts;       /* current pts */
173     double ts_scale;
174     int is_start;            /* is 1 at the start and after a discontinuity */
175     int showed_multi_packet_warning;
176     AVDictionary *opts;
177 } InputStream;
178
179 typedef struct InputFile {
180     AVFormatContext *ctx;
181     int eof_reached;      /* true if eof reached */
182     int ist_index;        /* index of first stream in ist_table */
183     int buffer_size;      /* current total buffer size */
184     int64_t ts_offset;
185     int nb_streams;       /* number of stream that avconv is aware of; may be different
186                              from ctx.nb_streams if new streams appear during av_read_frame() */
187     int rate_emu;
188 } InputFile;
189
190 typedef struct OutputStream {
191     int file_index;          /* file index */
192     int index;               /* stream index in the output file */
193     int source_index;        /* InputStream index */
194     AVStream *st;            /* stream in the output file */
195     int encoding_needed;     /* true if encoding needed for this stream */
196     int frame_number;
197     /* input pts and corresponding output pts
198        for A/V sync */
199     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
200     struct InputStream *sync_ist; /* input stream to sync against */
201     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
202     AVBitStreamFilterContext *bitstream_filters;
203     AVCodec *enc;
204     int64_t max_frames;
205
206     /* video only */
207     int video_resample;
208     AVFrame resample_frame;              /* temporary frame for image resampling */
209     struct SwsContext *img_resample_ctx; /* for image resampling */
210     int resample_height;
211     int resample_width;
212     int resample_pix_fmt;
213     AVRational frame_rate;
214     int force_fps;
215     int top_field_first;
216
217     float frame_aspect_ratio;
218
219     /* forced key frames */
220     int64_t *forced_kf_pts;
221     int forced_kf_count;
222     int forced_kf_index;
223
224     /* audio only */
225     int audio_resample;
226     ReSampleContext *resample; /* for audio resampling */
227     int resample_sample_fmt;
228     int resample_channels;
229     int resample_sample_rate;
230     int reformat_pair;
231     AVAudioConvert *reformat_ctx;
232     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
233     FILE *logfile;
234
235 #if CONFIG_AVFILTER
236     AVFilterContext *output_video_filter;
237     AVFilterContext *input_video_filter;
238     AVFilterBufferRef *picref;
239     char *avfilter;
240     AVFilterGraph *graph;
241 #endif
242
243    int64_t sws_flags;
244    AVDictionary *opts;
245    int is_past_recording_time;
246 } OutputStream;
247
248 #if HAVE_TERMIOS_H
249
250 /* init terminal so that we can grab keys */
251 static struct termios oldtty;
252 #endif
253
254 typedef struct OutputFile {
255     AVFormatContext *ctx;
256     AVDictionary *opts;
257     int ost_index;       /* index of the first stream in output_streams */
258     int64_t recording_time; /* desired length of the resulting file in microseconds */
259     int64_t start_time;     /* start time in microseconds */
260     uint64_t limit_filesize;
261 } OutputFile;
262
263 static InputStream *input_streams = NULL;
264 static int         nb_input_streams = 0;
265 static InputFile   *input_files   = NULL;
266 static int         nb_input_files   = 0;
267
268 static OutputStream *output_streams = NULL;
269 static int        nb_output_streams = 0;
270 static OutputFile   *output_files   = NULL;
271 static int        nb_output_files   = 0;
272
273 typedef struct OptionsContext {
274     /* input/output options */
275     int64_t start_time;
276     const char *format;
277
278     SpecifierOpt *codec_names;
279     int        nb_codec_names;
280     SpecifierOpt *audio_channels;
281     int        nb_audio_channels;
282     SpecifierOpt *audio_sample_rate;
283     int        nb_audio_sample_rate;
284     SpecifierOpt *frame_rates;
285     int        nb_frame_rates;
286     SpecifierOpt *frame_sizes;
287     int        nb_frame_sizes;
288     SpecifierOpt *frame_pix_fmts;
289     int        nb_frame_pix_fmts;
290
291     /* input options */
292     int64_t input_ts_offset;
293     int rate_emu;
294
295     SpecifierOpt *ts_scale;
296     int        nb_ts_scale;
297
298     /* output options */
299     StreamMap *stream_maps;
300     int     nb_stream_maps;
301     /* first item specifies output metadata, second is input */
302     MetadataMap (*meta_data_maps)[2];
303     int nb_meta_data_maps;
304     int metadata_global_manual;
305     int metadata_streams_manual;
306     int metadata_chapters_manual;
307
308     int chapters_input_file;
309
310     int64_t recording_time;
311     uint64_t limit_filesize;
312     float mux_preload;
313     float mux_max_delay;
314
315     int video_disable;
316     int audio_disable;
317     int subtitle_disable;
318     int data_disable;
319
320     /* indexed by output file stream index */
321     int   *streamid_map;
322     int nb_streamid_map;
323
324     SpecifierOpt *metadata;
325     int        nb_metadata;
326     SpecifierOpt *max_frames;
327     int        nb_max_frames;
328     SpecifierOpt *bitstream_filters;
329     int        nb_bitstream_filters;
330     SpecifierOpt *codec_tags;
331     int        nb_codec_tags;
332     SpecifierOpt *sample_fmts;
333     int        nb_sample_fmts;
334     SpecifierOpt *qscale;
335     int        nb_qscale;
336     SpecifierOpt *forced_key_frames;
337     int        nb_forced_key_frames;
338     SpecifierOpt *force_fps;
339     int        nb_force_fps;
340     SpecifierOpt *frame_aspect_ratios;
341     int        nb_frame_aspect_ratios;
342     SpecifierOpt *rc_overrides;
343     int        nb_rc_overrides;
344     SpecifierOpt *intra_matrices;
345     int        nb_intra_matrices;
346     SpecifierOpt *inter_matrices;
347     int        nb_inter_matrices;
348     SpecifierOpt *top_field_first;
349     int        nb_top_field_first;
350     SpecifierOpt *presets;
351     int        nb_presets;
352 #if CONFIG_AVFILTER
353     SpecifierOpt *filters;
354     int        nb_filters;
355 #endif
356 } OptionsContext;
357
358 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
359 {\
360     int i, ret;\
361     for (i = 0; i < o->nb_ ## name; i++) {\
362         char *spec = o->name[i].specifier;\
363         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
364             outvar = o->name[i].u.type;\
365         else if (ret < 0)\
366             exit_program(1);\
367     }\
368 }
369
370 static void reset_options(OptionsContext *o)
371 {
372     const OptionDef *po = options;
373
374     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
375     while (po->name) {
376         void *dst = (uint8_t*)o + po->u.off;
377
378         if (po->flags & OPT_SPEC) {
379             SpecifierOpt **so = dst;
380             int i, *count = (int*)(so + 1);
381             for (i = 0; i < *count; i++) {
382                 av_freep(&(*so)[i].specifier);
383                 if (po->flags & OPT_STRING)
384                     av_freep(&(*so)[i].u.str);
385             }
386             av_freep(so);
387             *count = 0;
388         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
389             av_freep(dst);
390         po++;
391     }
392
393     av_freep(&o->stream_maps);
394     av_freep(&o->meta_data_maps);
395     av_freep(&o->streamid_map);
396
397     memset(o, 0, sizeof(*o));
398
399     o->mux_preload    = 0.5;
400     o->mux_max_delay  = 0.7;
401     o->recording_time = INT64_MAX;
402     o->limit_filesize = UINT64_MAX;
403     o->chapters_input_file = INT_MAX;
404
405     uninit_opts();
406     init_opts();
407 }
408
409 #if CONFIG_AVFILTER
410
411 static int configure_video_filters(InputStream *ist, OutputStream *ost)
412 {
413     AVFilterContext *last_filter, *filter;
414     /** filter graph containing all filters including input & output */
415     AVCodecContext *codec = ost->st->codec;
416     AVCodecContext *icodec = ist->st->codec;
417     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
418     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
419     AVRational sample_aspect_ratio;
420     char args[255];
421     int ret;
422
423     ost->graph = avfilter_graph_alloc();
424
425     if (ist->st->sample_aspect_ratio.num){
426         sample_aspect_ratio = ist->st->sample_aspect_ratio;
427     }else
428         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
429
430     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
431              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
432              sample_aspect_ratio.num, sample_aspect_ratio.den);
433
434     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
435                                        "src", args, NULL, ost->graph);
436     if (ret < 0)
437         return ret;
438 #if FF_API_OLD_VSINK_API
439     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
440                                        "out", NULL, pix_fmts, ost->graph);
441 #else
442     buffersink_params->pixel_fmts = pix_fmts;
443     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
444                                        "out", NULL, buffersink_params, ost->graph);
445 #endif
446     av_freep(&buffersink_params);
447     if (ret < 0)
448         return ret;
449     last_filter = ost->input_video_filter;
450
451     if (codec->width  != icodec->width || codec->height != icodec->height) {
452         snprintf(args, 255, "%d:%d:flags=0x%X",
453                  codec->width,
454                  codec->height,
455                  (unsigned)ost->sws_flags);
456         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
457                                                 NULL, args, NULL, ost->graph)) < 0)
458             return ret;
459         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
460             return ret;
461         last_filter = filter;
462     }
463
464     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
465     ost->graph->scale_sws_opts = av_strdup(args);
466
467     if (ost->avfilter) {
468         AVFilterInOut *outputs = avfilter_inout_alloc();
469         AVFilterInOut *inputs  = avfilter_inout_alloc();
470
471         outputs->name    = av_strdup("in");
472         outputs->filter_ctx = last_filter;
473         outputs->pad_idx = 0;
474         outputs->next    = NULL;
475
476         inputs->name    = av_strdup("out");
477         inputs->filter_ctx = ost->output_video_filter;
478         inputs->pad_idx = 0;
479         inputs->next    = NULL;
480
481         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
482             return ret;
483         av_freep(&ost->avfilter);
484     } else {
485         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
486             return ret;
487     }
488
489     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
490         return ret;
491
492     codec->width  = ost->output_video_filter->inputs[0]->w;
493     codec->height = ost->output_video_filter->inputs[0]->h;
494     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
495         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
496         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
497         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
498
499     return 0;
500 }
501 #endif /* CONFIG_AVFILTER */
502
503 static void term_exit(void)
504 {
505     av_log(NULL, AV_LOG_QUIET, "%s", "");
506 #if HAVE_TERMIOS_H
507     if(!run_as_daemon)
508         tcsetattr (0, TCSANOW, &oldtty);
509 #endif
510 }
511
512 static volatile int received_sigterm = 0;
513
514 static void
515 sigterm_handler(int sig)
516 {
517     received_sigterm = sig;
518     q_pressed++;
519     term_exit();
520 }
521
522 static void term_init(void)
523 {
524 #if HAVE_TERMIOS_H
525     if(!run_as_daemon){
526     struct termios tty;
527
528     tcgetattr (0, &tty);
529     oldtty = tty;
530     atexit(term_exit);
531
532     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
533                           |INLCR|IGNCR|ICRNL|IXON);
534     tty.c_oflag |= OPOST;
535     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
536     tty.c_cflag &= ~(CSIZE|PARENB);
537     tty.c_cflag |= CS8;
538     tty.c_cc[VMIN] = 1;
539     tty.c_cc[VTIME] = 0;
540
541     tcsetattr (0, TCSANOW, &tty);
542     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
543     }
544 #endif
545
546     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
547     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
548 #ifdef SIGXCPU
549     signal(SIGXCPU, sigterm_handler);
550 #endif
551 }
552
553 /* read a key without blocking */
554 static int read_key(void)
555 {
556 #if HAVE_TERMIOS_H
557     int n = 1;
558     unsigned char ch;
559     struct timeval tv;
560     fd_set rfds;
561
562     if(run_as_daemon)
563         return -1;
564
565     FD_ZERO(&rfds);
566     FD_SET(0, &rfds);
567     tv.tv_sec = 0;
568     tv.tv_usec = 0;
569     n = select(1, &rfds, NULL, NULL, &tv);
570     if (n > 0) {
571         n = read(0, &ch, 1);
572         if (n == 1)
573             return ch;
574
575         return n;
576     }
577 #elif HAVE_KBHIT
578     if(kbhit())
579         return(getch());
580 #endif
581     return -1;
582 }
583
584 static int decode_interrupt_cb(void)
585 {
586     q_pressed += read_key() == 'q';
587     return q_pressed > 1;
588 }
589
590 void exit_program(int ret)
591 {
592     int i;
593
594     /* close files */
595     for(i=0;i<nb_output_files;i++) {
596         AVFormatContext *s = output_files[i].ctx;
597         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
598             avio_close(s->pb);
599         avformat_free_context(s);
600         av_dict_free(&output_files[i].opts);
601     }
602     for(i=0;i<nb_input_files;i++) {
603         av_close_input_file(input_files[i].ctx);
604     }
605     for (i = 0; i < nb_input_streams; i++)
606         av_dict_free(&input_streams[i].opts);
607
608     if (vstats_file)
609         fclose(vstats_file);
610     av_free(vstats_filename);
611
612     av_freep(&input_streams);
613     av_freep(&input_files);
614     av_freep(&output_streams);
615     av_freep(&output_files);
616
617     uninit_opts();
618     av_free(audio_buf);
619     av_free(audio_out);
620     allocated_audio_buf_size= allocated_audio_out_size= 0;
621     av_free(samples);
622
623 #if CONFIG_AVFILTER
624     avfilter_uninit();
625 #endif
626
627     if (received_sigterm) {
628         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
629                (int) received_sigterm);
630         exit (255);
631     }
632
633     exit(ret); /* not all OS-es handle main() return value */
634 }
635
636 static void assert_avoptions(AVDictionary *m)
637 {
638     AVDictionaryEntry *t;
639     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
640         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
641         exit_program(1);
642     }
643 }
644
645 static void assert_codec_experimental(AVCodecContext *c, int encoder)
646 {
647     const char *codec_string = encoder ? "encoder" : "decoder";
648     AVCodec *codec;
649     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
650         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
651         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
652                 "results.\nAdd '-strict experimental' if you want to use it.\n",
653                 codec_string, c->codec->name);
654         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
655         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
656             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
657                    codec_string, codec->name);
658         exit_program(1);
659     }
660 }
661
662 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
663 {
664     if(codec && codec->sample_fmts){
665         const enum AVSampleFormat *p= codec->sample_fmts;
666         for(; *p!=-1; p++){
667             if(*p == st->codec->sample_fmt)
668                 break;
669         }
670         if (*p == -1) {
671             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
672                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
673             if(av_get_sample_fmt_name(st->codec->sample_fmt))
674             av_log(NULL, AV_LOG_WARNING,
675                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
676                    av_get_sample_fmt_name(st->codec->sample_fmt),
677                    codec->name,
678                    av_get_sample_fmt_name(codec->sample_fmts[0]));
679             st->codec->sample_fmt = codec->sample_fmts[0];
680         }
681     }
682 }
683
684 static void choose_sample_rate(AVStream *st, AVCodec *codec)
685 {
686     if(codec && codec->supported_samplerates){
687         const int *p= codec->supported_samplerates;
688         int best=0;
689         int best_dist=INT_MAX;
690         for(; *p; p++){
691             int dist= abs(st->codec->sample_rate - *p);
692             if(dist < best_dist){
693                 best_dist= dist;
694                 best= *p;
695             }
696         }
697         if(best_dist){
698             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
699         }
700         st->codec->sample_rate= best;
701     }
702 }
703
704 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
705 {
706     if(codec && codec->pix_fmts){
707         const enum PixelFormat *p= codec->pix_fmts;
708         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
709             if(st->codec->codec_id==CODEC_ID_MJPEG){
710                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
711             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
712                 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};
713             }
714         }
715         for(; *p!=-1; p++){
716             if(*p == st->codec->pix_fmt)
717                 break;
718         }
719         if (*p == -1) {
720             if(st->codec->pix_fmt != PIX_FMT_NONE)
721                 av_log(NULL, AV_LOG_WARNING,
722                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
723                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
724                         codec->name,
725                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
726             st->codec->pix_fmt = codec->pix_fmts[0];
727         }
728     }
729 }
730
731 static double
732 get_sync_ipts(const OutputStream *ost)
733 {
734     const InputStream *ist = ost->sync_ist;
735     OutputFile *of = &output_files[ost->file_index];
736     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
737 }
738
739 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
740     int ret;
741
742     while(bsfc){
743         AVPacket new_pkt= *pkt;
744         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
745                                           &new_pkt.data, &new_pkt.size,
746                                           pkt->data, pkt->size,
747                                           pkt->flags & AV_PKT_FLAG_KEY);
748         if(a>0){
749             av_free_packet(pkt);
750             new_pkt.destruct= av_destruct_packet;
751         } else if(a<0){
752             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
753                    bsfc->filter->name, pkt->stream_index,
754                    avctx->codec ? avctx->codec->name : "copy");
755             print_error("", a);
756             if (exit_on_error)
757                 exit_program(1);
758         }
759         *pkt= new_pkt;
760
761         bsfc= bsfc->next;
762     }
763
764     ret= av_interleaved_write_frame(s, pkt);
765     if(ret < 0){
766         print_error("av_interleaved_write_frame()", ret);
767         exit_program(1);
768     }
769 }
770
771 static void do_audio_out(AVFormatContext *s,
772                          OutputStream *ost,
773                          InputStream *ist,
774                          unsigned char *buf, int size)
775 {
776     uint8_t *buftmp;
777     int64_t audio_out_size, audio_buf_size;
778     int64_t allocated_for_size= size;
779
780     int size_out, frame_bytes, ret, resample_changed;
781     AVCodecContext *enc= ost->st->codec;
782     AVCodecContext *dec= ist->st->codec;
783     int osize = av_get_bytes_per_sample(enc->sample_fmt);
784     int isize = av_get_bytes_per_sample(dec->sample_fmt);
785     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
786
787 need_realloc:
788     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
789     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
790     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
791     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
792     audio_buf_size*= osize*enc->channels;
793
794     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
795     if(coded_bps > 8*osize)
796         audio_out_size= audio_out_size * coded_bps / (8*osize);
797     audio_out_size += FF_MIN_BUFFER_SIZE;
798
799     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
800         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
801         exit_program(1);
802     }
803
804     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
805     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
806     if (!audio_buf || !audio_out){
807         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
808         exit_program(1);
809     }
810
811     if (enc->channels != dec->channels)
812         ost->audio_resample = 1;
813
814     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
815                        ost->resample_channels    != dec->channels   ||
816                        ost->resample_sample_rate != dec->sample_rate;
817
818     if ((ost->audio_resample && !ost->resample) || resample_changed) {
819         if (resample_changed) {
820             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",
821                    ist->file_index, ist->st->index,
822                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
823                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
824             ost->resample_sample_fmt  = dec->sample_fmt;
825             ost->resample_channels    = dec->channels;
826             ost->resample_sample_rate = dec->sample_rate;
827             if (ost->resample)
828                 audio_resample_close(ost->resample);
829         }
830         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
831         if (audio_sync_method <= 1 &&
832             ost->resample_sample_fmt  == enc->sample_fmt &&
833             ost->resample_channels    == enc->channels   &&
834             ost->resample_sample_rate == enc->sample_rate) {
835             ost->resample = NULL;
836             ost->audio_resample = 0;
837         } else {
838             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
839                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
840             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
841                                                    enc->sample_rate, dec->sample_rate,
842                                                    enc->sample_fmt,  dec->sample_fmt,
843                                                    16, 10, 0, 0.8);
844             if (!ost->resample) {
845                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
846                        dec->channels, dec->sample_rate,
847                        enc->channels, enc->sample_rate);
848                 exit_program(1);
849             }
850         }
851     }
852
853 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
854     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
855         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
856         if (ost->reformat_ctx)
857             av_audio_convert_free(ost->reformat_ctx);
858         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
859                                                    dec->sample_fmt, 1, NULL, 0);
860         if (!ost->reformat_ctx) {
861             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
862                    av_get_sample_fmt_name(dec->sample_fmt),
863                    av_get_sample_fmt_name(enc->sample_fmt));
864             exit_program(1);
865         }
866         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
867     }
868
869     if(audio_sync_method){
870         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
871                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
872         double idelta= delta*dec->sample_rate / enc->sample_rate;
873         int byte_delta= ((int)idelta)*2*dec->channels;
874
875         //FIXME resample delay
876         if(fabs(delta) > 50){
877             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
878                 if(byte_delta < 0){
879                     byte_delta= FFMAX(byte_delta, -size);
880                     size += byte_delta;
881                     buf  -= byte_delta;
882                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
883                     if(!size)
884                         return;
885                     ist->is_start=0;
886                 }else{
887                     static uint8_t *input_tmp= NULL;
888                     input_tmp= av_realloc(input_tmp, byte_delta + size);
889
890                     if(byte_delta > allocated_for_size - size){
891                         allocated_for_size= byte_delta + (int64_t)size;
892                         goto need_realloc;
893                     }
894                     ist->is_start=0;
895
896                     memset(input_tmp, 0, byte_delta);
897                     memcpy(input_tmp + byte_delta, buf, size);
898                     buf= input_tmp;
899                     size += byte_delta;
900                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
901                 }
902             }else if(audio_sync_method>1){
903                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
904                 av_assert0(ost->audio_resample);
905                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
906                        delta, comp, enc->sample_rate);
907 //                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));
908                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
909             }
910         }
911     }else
912         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
913                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
914
915     if (ost->audio_resample) {
916         buftmp = audio_buf;
917         size_out = audio_resample(ost->resample,
918                                   (short *)buftmp, (short *)buf,
919                                   size / (dec->channels * isize));
920         size_out = size_out * enc->channels * osize;
921     } else {
922         buftmp = buf;
923         size_out = size;
924     }
925
926     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
927         const void *ibuf[6]= {buftmp};
928         void *obuf[6]= {audio_buf};
929         int istride[6]= {isize};
930         int ostride[6]= {osize};
931         int len= size_out/istride[0];
932         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
933             printf("av_audio_convert() failed\n");
934             if (exit_on_error)
935                 exit_program(1);
936             return;
937         }
938         buftmp = audio_buf;
939         size_out = len*osize;
940     }
941
942     /* now encode as many frames as possible */
943     if (enc->frame_size > 1) {
944         /* output resampled raw samples */
945         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
946             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
947             exit_program(1);
948         }
949         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
950
951         frame_bytes = enc->frame_size * osize * enc->channels;
952
953         while (av_fifo_size(ost->fifo) >= frame_bytes) {
954             AVPacket pkt;
955             av_init_packet(&pkt);
956
957             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
958
959             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
960
961             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
962                                        (short *)audio_buf);
963             if (ret < 0) {
964                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
965                 exit_program(1);
966             }
967             audio_size += ret;
968             pkt.stream_index= ost->index;
969             pkt.data= audio_out;
970             pkt.size= ret;
971             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
972                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
973             pkt.flags |= AV_PKT_FLAG_KEY;
974             write_frame(s, &pkt, enc, ost->bitstream_filters);
975
976             ost->sync_opts += enc->frame_size;
977         }
978     } else {
979         AVPacket pkt;
980         av_init_packet(&pkt);
981
982         ost->sync_opts += size_out / (osize * enc->channels);
983
984         /* output a pcm frame */
985         /* determine the size of the coded buffer */
986         size_out /= osize;
987         if (coded_bps)
988             size_out = size_out*coded_bps/8;
989
990         if(size_out > audio_out_size){
991             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
992             exit_program(1);
993         }
994
995         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
996         ret = avcodec_encode_audio(enc, audio_out, size_out,
997                                    (short *)buftmp);
998         if (ret < 0) {
999             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1000             exit_program(1);
1001         }
1002         audio_size += ret;
1003         pkt.stream_index= ost->index;
1004         pkt.data= audio_out;
1005         pkt.size= ret;
1006         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1007             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1008         pkt.flags |= AV_PKT_FLAG_KEY;
1009         write_frame(s, &pkt, enc, ost->bitstream_filters);
1010     }
1011 }
1012
1013 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1014 {
1015     AVCodecContext *dec;
1016     AVPicture *picture2;
1017     AVPicture picture_tmp;
1018     uint8_t *buf = 0;
1019
1020     dec = ist->st->codec;
1021
1022     /* deinterlace : must be done before any resize */
1023     if (do_deinterlace) {
1024         int size;
1025
1026         /* create temporary picture */
1027         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1028         buf = av_malloc(size);
1029         if (!buf)
1030             return;
1031
1032         picture2 = &picture_tmp;
1033         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1034
1035         if(avpicture_deinterlace(picture2, picture,
1036                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1037             /* if error, do not deinterlace */
1038             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1039             av_free(buf);
1040             buf = NULL;
1041             picture2 = picture;
1042         }
1043     } else {
1044         picture2 = picture;
1045     }
1046
1047     if (picture != picture2)
1048         *picture = *picture2;
1049     *bufp = buf;
1050 }
1051
1052 static void do_subtitle_out(AVFormatContext *s,
1053                             OutputStream *ost,
1054                             InputStream *ist,
1055                             AVSubtitle *sub,
1056                             int64_t pts)
1057 {
1058     static uint8_t *subtitle_out = NULL;
1059     int subtitle_out_max_size = 1024 * 1024;
1060     int subtitle_out_size, nb, i;
1061     AVCodecContext *enc;
1062     AVPacket pkt;
1063
1064     if (pts == AV_NOPTS_VALUE) {
1065         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1066         if (exit_on_error)
1067             exit_program(1);
1068         return;
1069     }
1070
1071     enc = ost->st->codec;
1072
1073     if (!subtitle_out) {
1074         subtitle_out = av_malloc(subtitle_out_max_size);
1075     }
1076
1077     /* Note: DVB subtitle need one packet to draw them and one other
1078        packet to clear them */
1079     /* XXX: signal it in the codec context ? */
1080     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1081         nb = 2;
1082     else
1083         nb = 1;
1084
1085     for(i = 0; i < nb; i++) {
1086         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1087         // start_display_time is required to be 0
1088         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1089         sub->end_display_time -= sub->start_display_time;
1090         sub->start_display_time = 0;
1091         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1092                                                     subtitle_out_max_size, sub);
1093         if (subtitle_out_size < 0) {
1094             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1095             exit_program(1);
1096         }
1097
1098         av_init_packet(&pkt);
1099         pkt.stream_index = ost->index;
1100         pkt.data = subtitle_out;
1101         pkt.size = subtitle_out_size;
1102         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1103         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1104             /* XXX: the pts correction is handled here. Maybe handling
1105                it in the codec would be better */
1106             if (i == 0)
1107                 pkt.pts += 90 * sub->start_display_time;
1108             else
1109                 pkt.pts += 90 * sub->end_display_time;
1110         }
1111         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1112     }
1113 }
1114
1115 static int bit_buffer_size= 1024*256;
1116 static uint8_t *bit_buffer= NULL;
1117
1118 static void do_video_resample(OutputStream *ost,
1119                               InputStream *ist,
1120                               AVFrame *in_picture,
1121                               AVFrame **out_picture)
1122 {
1123     int resample_changed = 0;
1124     AVCodecContext *dec = ist->st->codec;
1125     AVCodecContext *enc = ost->st->codec;
1126     *out_picture = in_picture;
1127
1128     resample_changed = ost->resample_width   != dec->width  ||
1129                        ost->resample_height  != dec->height ||
1130                        ost->resample_pix_fmt != dec->pix_fmt;
1131
1132 #if !CONFIG_AVFILTER
1133     if (resample_changed) {
1134         av_log(NULL, AV_LOG_INFO,
1135                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1136                ist->file_index, ist->st->index,
1137                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1138                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1139         ost->resample_width   = dec->width;
1140         ost->resample_height  = dec->height;
1141         ost->resample_pix_fmt = dec->pix_fmt;
1142     }
1143
1144     ost->video_resample = dec->width   != enc->width  ||
1145                           dec->height  != enc->height ||
1146                           dec->pix_fmt != enc->pix_fmt;
1147
1148     if (ost->video_resample) {
1149         *out_picture = &ost->resample_frame;
1150         if (!ost->img_resample_ctx || resample_changed) {
1151             /* initialize the destination picture */
1152             if (!ost->resample_frame.data[0]) {
1153                 avcodec_get_frame_defaults(&ost->resample_frame);
1154                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1155                                     enc->width, enc->height)) {
1156                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1157                     exit_program(1);
1158                 }
1159             }
1160             /* initialize a new scaler context */
1161             sws_freeContext(ost->img_resample_ctx);
1162             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1163                                                    enc->width, enc->height, enc->pix_fmt,
1164                                                    ost->sws_flags, NULL, NULL, NULL);
1165             if (ost->img_resample_ctx == NULL) {
1166                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1167                 exit_program(1);
1168             }
1169         }
1170         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1171               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1172     }
1173 #else
1174     if (resample_changed) {
1175         avfilter_graph_free(&ost->graph);
1176         if (configure_video_filters(ist, ost)) {
1177             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1178             exit_program(1);
1179         }
1180     }
1181 #endif
1182     if (resample_changed) {
1183         ost->resample_width   = dec->width;
1184         ost->resample_height  = dec->height;
1185         ost->resample_pix_fmt = dec->pix_fmt;
1186     }
1187 }
1188
1189
1190 static void do_video_out(AVFormatContext *s,
1191                          OutputStream *ost,
1192                          InputStream *ist,
1193                          AVFrame *in_picture,
1194                          int *frame_size, float quality)
1195 {
1196     int nb_frames, i, ret, format_video_sync;
1197     AVFrame *final_picture;
1198     AVCodecContext *enc;
1199     double sync_ipts;
1200
1201     enc = ost->st->codec;
1202
1203     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1204
1205     /* by default, we output a single frame */
1206     nb_frames = 1;
1207
1208     *frame_size = 0;
1209
1210     format_video_sync = video_sync_method;
1211     if (format_video_sync < 0)
1212         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1213
1214     if (format_video_sync) {
1215         double vdelta = sync_ipts - ost->sync_opts;
1216         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1217         if (vdelta < -1.1)
1218             nb_frames = 0;
1219         else if (format_video_sync == 2) {
1220             if(vdelta<=-0.6){
1221                 nb_frames=0;
1222             }else if(vdelta>0.6)
1223                 ost->sync_opts= lrintf(sync_ipts);
1224         }else if (vdelta > 1.1)
1225             nb_frames = lrintf(vdelta);
1226 //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);
1227         if (nb_frames == 0){
1228             ++nb_frames_drop;
1229             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1230         }else if (nb_frames > 1) {
1231             nb_frames_dup += nb_frames - 1;
1232             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1233         }
1234     }else
1235         ost->sync_opts= lrintf(sync_ipts);
1236
1237     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1238     if (nb_frames <= 0)
1239         return;
1240
1241     do_video_resample(ost, ist, in_picture, &final_picture);
1242
1243     /* duplicates frame if needed */
1244     for(i=0;i<nb_frames;i++) {
1245         AVPacket pkt;
1246         av_init_packet(&pkt);
1247         pkt.stream_index= ost->index;
1248
1249         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1250             /* raw pictures are written as AVPicture structure to
1251                avoid any copies. We support temporarily the older
1252                method. */
1253             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1254             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1255             pkt.data= (uint8_t *)final_picture;
1256             pkt.size=  sizeof(AVPicture);
1257             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1258             pkt.flags |= AV_PKT_FLAG_KEY;
1259
1260             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1261         } else {
1262             AVFrame big_picture;
1263
1264             big_picture= *final_picture;
1265             /* better than nothing: use input picture interlaced
1266                settings */
1267             big_picture.interlaced_frame = in_picture->interlaced_frame;
1268             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1269                 if (ost->top_field_first == -1)
1270                     big_picture.top_field_first = in_picture->top_field_first;
1271                 else
1272                     big_picture.top_field_first = !!ost->top_field_first;
1273             }
1274
1275             /* handles same_quant here. This is not correct because it may
1276                not be a global option */
1277             big_picture.quality = quality;
1278             if (!enc->me_threshold)
1279                 big_picture.pict_type = 0;
1280 //            big_picture.pts = AV_NOPTS_VALUE;
1281             big_picture.pts= ost->sync_opts;
1282 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1283 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1284             if (ost->forced_kf_index < ost->forced_kf_count &&
1285                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1286                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1287                 ost->forced_kf_index++;
1288             }
1289             ret = avcodec_encode_video(enc,
1290                                        bit_buffer, bit_buffer_size,
1291                                        &big_picture);
1292             if (ret < 0) {
1293                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1294                 exit_program(1);
1295             }
1296
1297             if(ret>0){
1298                 pkt.data= bit_buffer;
1299                 pkt.size= ret;
1300                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1301                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1302 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1303    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1304    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1305
1306                 if(enc->coded_frame->key_frame)
1307                     pkt.flags |= AV_PKT_FLAG_KEY;
1308                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1309                 *frame_size = ret;
1310                 video_size += ret;
1311                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1312                 //        enc->frame_number-1, ret, enc->pict_type);
1313                 /* if two pass, output log */
1314                 if (ost->logfile && enc->stats_out) {
1315                     fprintf(ost->logfile, "%s", enc->stats_out);
1316                 }
1317             }
1318         }
1319         ost->sync_opts++;
1320         ost->frame_number++;
1321     }
1322 }
1323
1324 static double psnr(double d){
1325     return -10.0*log(d)/log(10.0);
1326 }
1327
1328 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1329                            int frame_size)
1330 {
1331     AVCodecContext *enc;
1332     int frame_number;
1333     double ti1, bitrate, avg_bitrate;
1334
1335     /* this is executed just the first time do_video_stats is called */
1336     if (!vstats_file) {
1337         vstats_file = fopen(vstats_filename, "w");
1338         if (!vstats_file) {
1339             perror("fopen");
1340             exit_program(1);
1341         }
1342     }
1343
1344     enc = ost->st->codec;
1345     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1346         frame_number = ost->frame_number;
1347         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1348         if (enc->flags&CODEC_FLAG_PSNR)
1349             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1350
1351         fprintf(vstats_file,"f_size= %6d ", frame_size);
1352         /* compute pts value */
1353         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1354         if (ti1 < 0.01)
1355             ti1 = 0.01;
1356
1357         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1358         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1359         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1360             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1361         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1362     }
1363 }
1364
1365 static void print_report(OutputFile *output_files,
1366                          OutputStream *ost_table, int nb_ostreams,
1367                          int is_last_report, int64_t timer_start)
1368 {
1369     char buf[1024];
1370     OutputStream *ost;
1371     AVFormatContext *oc;
1372     int64_t total_size;
1373     AVCodecContext *enc;
1374     int frame_number, vid, i;
1375     double bitrate;
1376     int64_t pts = INT64_MAX;
1377     static int64_t last_time = -1;
1378     static int qp_histogram[52];
1379     int hours, mins, secs, us;
1380
1381     if (!print_stats && !is_last_report)
1382         return;
1383
1384     if (!is_last_report) {
1385         int64_t cur_time;
1386         /* display the report every 0.5 seconds */
1387         cur_time = av_gettime();
1388         if (last_time == -1) {
1389             last_time = cur_time;
1390             return;
1391         }
1392         if ((cur_time - last_time) < 500000)
1393             return;
1394         last_time = cur_time;
1395     }
1396
1397
1398     oc = output_files[0].ctx;
1399
1400     total_size = avio_size(oc->pb);
1401     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1402         total_size= avio_tell(oc->pb);
1403
1404     buf[0] = '\0';
1405     vid = 0;
1406     for(i=0;i<nb_ostreams;i++) {
1407         float q = -1;
1408         ost = &ost_table[i];
1409         enc = ost->st->codec;
1410         if (!ost->st->stream_copy && enc->coded_frame)
1411             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1412         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1413             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1414         }
1415         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1416             float t = (av_gettime()-timer_start) / 1000000.0;
1417
1418             frame_number = ost->frame_number;
1419             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1420                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1421             if(is_last_report)
1422                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1423             if(qp_hist){
1424                 int j;
1425                 int qp = lrintf(q);
1426                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1427                     qp_histogram[qp]++;
1428                 for(j=0; j<32; j++)
1429                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1430             }
1431             if (enc->flags&CODEC_FLAG_PSNR){
1432                 int j;
1433                 double error, error_sum=0;
1434                 double scale, scale_sum=0;
1435                 char type[3]= {'Y','U','V'};
1436                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1437                 for(j=0; j<3; j++){
1438                     if(is_last_report){
1439                         error= enc->error[j];
1440                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1441                     }else{
1442                         error= enc->coded_frame->error[j];
1443                         scale= enc->width*enc->height*255.0*255.0;
1444                     }
1445                     if(j) scale/=4;
1446                     error_sum += error;
1447                     scale_sum += scale;
1448                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1449                 }
1450                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1451             }
1452             vid = 1;
1453         }
1454         /* compute min output value */
1455         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1456                                       ost->st->time_base, AV_TIME_BASE_Q));
1457     }
1458
1459     secs = pts / AV_TIME_BASE;
1460     us = pts % AV_TIME_BASE;
1461     mins = secs / 60;
1462     secs %= 60;
1463     hours = mins / 60;
1464     mins %= 60;
1465
1466     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1467
1468     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1469              "size=%8.0fkB time=", total_size / 1024.0);
1470     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1471              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1472              (100 * us) / AV_TIME_BASE);
1473     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1474              "bitrate=%6.1fkbits/s", bitrate);
1475
1476     if (nb_frames_dup || nb_frames_drop)
1477         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1478                 nb_frames_dup, nb_frames_drop);
1479
1480     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1481
1482     fflush(stderr);
1483
1484     if (is_last_report) {
1485         int64_t raw= audio_size + video_size + extra_size;
1486         av_log(NULL, AV_LOG_INFO, "\n");
1487         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1488                video_size/1024.0,
1489                audio_size/1024.0,
1490                extra_size/1024.0,
1491                100.0*(total_size - raw)/raw
1492         );
1493     }
1494 }
1495
1496 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1497 {
1498     int fill_char = 0x00;
1499     if (sample_fmt == AV_SAMPLE_FMT_U8)
1500         fill_char = 0x80;
1501     memset(buf, fill_char, size);
1502 }
1503
1504 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1505 {
1506     int i, ret;
1507
1508     for (i = 0; i < nb_ostreams; i++) {
1509         OutputStream   *ost = &ost_table[i];
1510         AVCodecContext *enc = ost->st->codec;
1511         AVFormatContext *os = output_files[ost->file_index].ctx;
1512
1513         if (!ost->encoding_needed)
1514             continue;
1515
1516         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1517             continue;
1518         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1519             continue;
1520
1521         for(;;) {
1522             AVPacket pkt;
1523             int fifo_bytes;
1524             av_init_packet(&pkt);
1525             pkt.stream_index= ost->index;
1526
1527             switch (ost->st->codec->codec_type) {
1528             case AVMEDIA_TYPE_AUDIO:
1529                 fifo_bytes = av_fifo_size(ost->fifo);
1530                 ret = 0;
1531                 /* encode any samples remaining in fifo */
1532                 if (fifo_bytes > 0) {
1533                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1534                     int fs_tmp = enc->frame_size;
1535
1536                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1537                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1538                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1539                     } else { /* pad */
1540                         int frame_bytes = enc->frame_size*osize*enc->channels;
1541                         if (allocated_audio_buf_size < frame_bytes)
1542                             exit_program(1);
1543                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1544                     }
1545
1546                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1547                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1548                                               ost->st->time_base.num, enc->sample_rate);
1549                     enc->frame_size = fs_tmp;
1550                 }
1551                 if (ret <= 0) {
1552                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1553                 }
1554                 if (ret < 0) {
1555                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1556                     exit_program(1);
1557                 }
1558                 audio_size += ret;
1559                 pkt.flags |= AV_PKT_FLAG_KEY;
1560                 break;
1561             case AVMEDIA_TYPE_VIDEO:
1562                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1563                 if (ret < 0) {
1564                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1565                     exit_program(1);
1566                 }
1567                 video_size += ret;
1568                 if(enc->coded_frame && enc->coded_frame->key_frame)
1569                     pkt.flags |= AV_PKT_FLAG_KEY;
1570                 if (ost->logfile && enc->stats_out) {
1571                     fprintf(ost->logfile, "%s", enc->stats_out);
1572                 }
1573                 break;
1574             default:
1575                 ret=-1;
1576             }
1577
1578             if (ret <= 0)
1579                 break;
1580             pkt.data = bit_buffer;
1581             pkt.size = ret;
1582             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1583                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1584             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1585         }
1586     }
1587 }
1588
1589 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1590 static int output_packet(InputStream *ist, int ist_index,
1591                          OutputStream *ost_table, int nb_ostreams,
1592                          const AVPacket *pkt)
1593 {
1594     AVFormatContext *os;
1595     OutputStream *ost;
1596     int ret = 0, i;
1597     int got_output;
1598     void *buffer_to_free = NULL;
1599     static unsigned int samples_size= 0;
1600     AVSubtitle subtitle, *subtitle_to_free;
1601     int64_t pkt_pts = AV_NOPTS_VALUE;
1602 #if CONFIG_AVFILTER
1603     int frame_available;
1604 #endif
1605     float quality;
1606
1607     AVPacket avpkt;
1608     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1609
1610     if(ist->next_pts == AV_NOPTS_VALUE)
1611         ist->next_pts= ist->pts;
1612
1613     if (pkt == NULL) {
1614         /* EOF handling */
1615         av_init_packet(&avpkt);
1616         avpkt.data = NULL;
1617         avpkt.size = 0;
1618         goto handle_eof;
1619     } else {
1620         avpkt = *pkt;
1621     }
1622
1623     if(pkt->dts != AV_NOPTS_VALUE)
1624         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1625     if(pkt->pts != AV_NOPTS_VALUE)
1626         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1627
1628     //while we have more to decode or while the decoder did output something on EOF
1629     while (avpkt.size > 0 || (!pkt && got_output)) {
1630         uint8_t *data_buf, *decoded_data_buf;
1631         int data_size, decoded_data_size;
1632         AVFrame *decoded_frame, *filtered_frame;
1633     handle_eof:
1634         ist->pts= ist->next_pts;
1635
1636         if(avpkt.size && avpkt.size != pkt->size)
1637             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1638                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1639             ist->showed_multi_packet_warning=1;
1640
1641         /* decode the packet if needed */
1642         decoded_frame    = filtered_frame = NULL;
1643         decoded_data_buf = NULL; /* fail safe */
1644         decoded_data_size= 0;
1645         data_buf  = avpkt.data;
1646         data_size = avpkt.size;
1647         subtitle_to_free = NULL;
1648         if (ist->decoding_needed) {
1649             switch(ist->st->codec->codec_type) {
1650             case AVMEDIA_TYPE_AUDIO:{
1651                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1652                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1653                     av_free(samples);
1654                     samples= av_malloc(samples_size);
1655                 }
1656                 decoded_data_size= samples_size;
1657                     /* XXX: could avoid copy if PCM 16 bits with same
1658                        endianness as CPU */
1659                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1660                                             &avpkt);
1661                 if (ret < 0)
1662                     return ret;
1663                 avpkt.data += ret;
1664                 avpkt.size -= ret;
1665                 data_size   = ret;
1666                 got_output  = decoded_data_size > 0;
1667                 /* Some bug in mpeg audio decoder gives */
1668                 /* decoded_data_size < 0, it seems they are overflows */
1669                 if (!got_output) {
1670                     /* no audio frame */
1671                     continue;
1672                 }
1673                 decoded_data_buf = (uint8_t *)samples;
1674                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1675                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1676                 break;}
1677             case AVMEDIA_TYPE_VIDEO:
1678                     if (!(decoded_frame = avcodec_alloc_frame()))
1679                         return AVERROR(ENOMEM);
1680                     avpkt.pts = pkt_pts;
1681                     avpkt.dts = ist->pts;
1682                     pkt_pts = AV_NOPTS_VALUE;
1683
1684                     ret = avcodec_decode_video2(ist->st->codec,
1685                                                 decoded_frame, &got_output, &avpkt);
1686                     quality = same_quant ? decoded_frame->quality : 0;
1687                     if (ret < 0)
1688                         goto fail;
1689                     if (!got_output) {
1690                         /* no picture yet */
1691                         av_freep(&decoded_frame);
1692                         goto discard_packet;
1693                     }
1694                     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1695                     if (ist->st->codec->time_base.num != 0) {
1696                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1697                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1698                                           ist->st->codec->time_base.num * ticks) /
1699                             ist->st->codec->time_base.den;
1700                     }
1701                     avpkt.size = 0;
1702                     buffer_to_free = NULL;
1703                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1704                     break;
1705             case AVMEDIA_TYPE_SUBTITLE:
1706                 ret = avcodec_decode_subtitle2(ist->st->codec,
1707                                                &subtitle, &got_output, &avpkt);
1708                 if (ret < 0)
1709                     return ret;
1710                 if (!got_output) {
1711                     goto discard_packet;
1712                 }
1713                 subtitle_to_free = &subtitle;
1714                 avpkt.size = 0;
1715                 break;
1716             default:
1717                 return -1;
1718             }
1719         } else {
1720             switch(ist->st->codec->codec_type) {
1721             case AVMEDIA_TYPE_AUDIO:
1722                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1723                     ist->st->codec->sample_rate;
1724                 break;
1725             case AVMEDIA_TYPE_VIDEO:
1726                 if (ist->st->codec->time_base.num != 0) {
1727                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1728                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1729                                       ist->st->codec->time_base.num * ticks) /
1730                         ist->st->codec->time_base.den;
1731                 }
1732                 break;
1733             }
1734             avpkt.size = 0;
1735         }
1736
1737         // preprocess audio (volume)
1738         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1739             if (audio_volume != 256) {
1740                 switch (ist->st->codec->sample_fmt) {
1741                 case AV_SAMPLE_FMT_U8:
1742                 {
1743                     uint8_t *volp = samples;
1744                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1745                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1746                         *volp++ = av_clip_uint8(v);
1747                     }
1748                     break;
1749                 }
1750                 case AV_SAMPLE_FMT_S16:
1751                 {
1752                     int16_t *volp = samples;
1753                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1754                         int v = ((*volp) * audio_volume + 128) >> 8;
1755                         *volp++ = av_clip_int16(v);
1756                     }
1757                     break;
1758                 }
1759                 case AV_SAMPLE_FMT_S32:
1760                 {
1761                     int32_t *volp = samples;
1762                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1763                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1764                         *volp++ = av_clipl_int32(v);
1765                     }
1766                     break;
1767                 }
1768                 case AV_SAMPLE_FMT_FLT:
1769                 {
1770                     float *volp = samples;
1771                     float scale = audio_volume / 256.f;
1772                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1773                         *volp++ *= scale;
1774                     }
1775                     break;
1776                 }
1777                 case AV_SAMPLE_FMT_DBL:
1778                 {
1779                     double *volp = samples;
1780                     double scale = audio_volume / 256.;
1781                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1782                         *volp++ *= scale;
1783                     }
1784                     break;
1785                 }
1786                 default:
1787                     av_log(NULL, AV_LOG_FATAL,
1788                            "Audio volume adjustment on sample format %s is not supported.\n",
1789                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1790                     exit_program(1);
1791                 }
1792             }
1793         }
1794
1795         /* frame rate emulation */
1796         if (input_files[ist->file_index].rate_emu) {
1797             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1798             int64_t now = av_gettime() - ist->start;
1799             if (pts > now)
1800                 usleep(pts - now);
1801         }
1802         /* if output time reached then transcode raw format,
1803            encode packets and output them */
1804         for (i = 0; i < nb_ostreams; i++) {
1805             OutputFile *of = &output_files[ost_table[i].file_index];
1806             int frame_size;
1807
1808             ost = &ost_table[i];
1809             if (ost->source_index != ist_index)
1810                 continue;
1811
1812             if (of->start_time && ist->pts < of->start_time)
1813                 continue;
1814
1815             if (of->recording_time != INT64_MAX &&
1816                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1817                               (AVRational){1, 1000000}) >= 0) {
1818                 ost->is_past_recording_time = 1;
1819                 continue;
1820             }
1821
1822 #if CONFIG_AVFILTER
1823             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1824                 ost->input_video_filter) {
1825                 if (!decoded_frame->sample_aspect_ratio.num)
1826                     decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1827                 decoded_frame->pts = ist->pts;
1828
1829                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1830                 if (!(filtered_frame = avcodec_alloc_frame())) {
1831                     ret = AVERROR(ENOMEM);
1832                     goto fail;
1833                 }
1834             }
1835             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1836                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1837             while (frame_available) {
1838                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1839                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1840                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1841                         goto cont;
1842                     if (ost->picref) {
1843                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1844                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1845                     }
1846                 }
1847 #else
1848                 filtered_frame = decoded_frame;
1849 #endif
1850                 os = output_files[ost->file_index].ctx;
1851
1852                 /* set the input output pts pairs */
1853                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1854
1855                 if (ost->encoding_needed) {
1856                     av_assert0(ist->decoding_needed);
1857                     switch(ost->st->codec->codec_type) {
1858                     case AVMEDIA_TYPE_AUDIO:
1859                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1860                         break;
1861                     case AVMEDIA_TYPE_VIDEO:
1862 #if CONFIG_AVFILTER
1863                         if (ost->picref->video && !ost->frame_aspect_ratio)
1864                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1865 #endif
1866                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1867                                      same_quant ? quality : ost->st->codec->global_quality);
1868                         if (vstats_filename && frame_size)
1869                             do_video_stats(os, ost, frame_size);
1870                         break;
1871                     case AVMEDIA_TYPE_SUBTITLE:
1872                         do_subtitle_out(os, ost, ist, &subtitle,
1873                                         pkt->pts);
1874                         break;
1875                     default:
1876                         abort();
1877                     }
1878                 } else {
1879                     AVPicture pict;
1880                     AVPacket opkt;
1881                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1882                     av_init_packet(&opkt);
1883
1884                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1885 #if !CONFIG_AVFILTER
1886                         continue;
1887 #else
1888                         goto cont;
1889 #endif
1890
1891                     /* no reencoding needed : output the packet directly */
1892                     /* force the input stream PTS */
1893
1894                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1895                         audio_size += data_size;
1896                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1897                         video_size += data_size;
1898                         ost->sync_opts++;
1899                     }
1900
1901                     opkt.stream_index= ost->index;
1902                     if(pkt->pts != AV_NOPTS_VALUE)
1903                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1904                     else
1905                         opkt.pts= AV_NOPTS_VALUE;
1906
1907                     if (pkt->dts == AV_NOPTS_VALUE)
1908                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1909                     else
1910                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1911                     opkt.dts -= ost_tb_start_time;
1912
1913                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1914                     opkt.flags= pkt->flags;
1915
1916                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1917                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1918                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1919                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1920                        ) {
1921                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1922                             opkt.destruct= av_destruct_packet;
1923                     } else {
1924                         opkt.data = data_buf;
1925                         opkt.size = data_size;
1926                     }
1927
1928                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1929                         /* store AVPicture in AVPacket, as expected by the output format */
1930                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1931                         opkt.data = (uint8_t *)&pict;
1932                         opkt.size = sizeof(AVPicture);
1933                         opkt.flags |= AV_PKT_FLAG_KEY;
1934                     }
1935                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1936                     ost->st->codec->frame_number++;
1937                     ost->frame_number++;
1938                     av_free_packet(&opkt);
1939                 }
1940 #if CONFIG_AVFILTER
1941                 cont:
1942                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1943                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1944                 if (ost->picref)
1945                     avfilter_unref_buffer(ost->picref);
1946             }
1947             av_freep(&filtered_frame);
1948 #endif
1949             }
1950
1951 fail:
1952         av_free(buffer_to_free);
1953         /* XXX: allocate the subtitles in the codec ? */
1954         if (subtitle_to_free) {
1955             avsubtitle_free(subtitle_to_free);
1956             subtitle_to_free = NULL;
1957         }
1958         av_freep(&decoded_frame);
1959         if (ret < 0)
1960             return ret;
1961     }
1962  discard_packet:
1963
1964     return 0;
1965 }
1966
1967 static void print_sdp(OutputFile *output_files, int n)
1968 {
1969     char sdp[2048];
1970     int i;
1971     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1972
1973     if (!avc)
1974         exit_program(1);
1975     for (i = 0; i < n; i++)
1976         avc[i] = output_files[i].ctx;
1977
1978     av_sdp_create(avc, n, sdp, sizeof(sdp));
1979     printf("SDP:\n%s\n", sdp);
1980     fflush(stdout);
1981     av_freep(&avc);
1982 }
1983
1984 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1985                              char *error, int error_len)
1986 {
1987     int i;
1988     InputStream *ist = &input_streams[ist_index];
1989     if (ist->decoding_needed) {
1990         AVCodec *codec = ist->dec;
1991         if (!codec) {
1992             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1993                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1994             return AVERROR(EINVAL);
1995         }
1996
1997         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1998             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1999                     ist->file_index, ist->st->index);
2000             return AVERROR(EINVAL);
2001         }
2002         assert_codec_experimental(ist->st->codec, 0);
2003         assert_avoptions(ist->opts);
2004     }
2005
2006     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2007     ist->next_pts = AV_NOPTS_VALUE;
2008     ist->is_start = 1;
2009
2010     return 0;
2011 }
2012
2013 static int transcode_init(OutputFile *output_files,
2014                           int nb_output_files,
2015                           InputFile *input_files,
2016                           int nb_input_files)
2017 {
2018     int ret = 0, i, j, k;
2019     AVFormatContext *os;
2020     AVCodecContext *codec, *icodec;
2021     OutputStream *ost;
2022     InputStream *ist;
2023     char error[1024];
2024     int want_sdp = 1;
2025
2026     /* init framerate emulation */
2027     for (i = 0; i < nb_input_files; i++) {
2028         InputFile *ifile = &input_files[i];
2029         if (ifile->rate_emu)
2030             for (j = 0; j < ifile->nb_streams; j++)
2031                 input_streams[j + ifile->ist_index].start = av_gettime();
2032     }
2033
2034     /* output stream init */
2035     for(i=0;i<nb_output_files;i++) {
2036         os = output_files[i].ctx;
2037         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2038             av_dump_format(os, i, os->filename, 1);
2039             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2040             return AVERROR(EINVAL);
2041         }
2042     }
2043
2044     /* for each output stream, we compute the right encoding parameters */
2045     for (i = 0; i < nb_output_streams; i++) {
2046         ost = &output_streams[i];
2047         os = output_files[ost->file_index].ctx;
2048         ist = &input_streams[ost->source_index];
2049
2050         codec = ost->st->codec;
2051         icodec = ist->st->codec;
2052
2053         ost->st->disposition = ist->st->disposition;
2054         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2055         codec->chroma_sample_location = icodec->chroma_sample_location;
2056
2057         if (ost->st->stream_copy) {
2058             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2059
2060             if (extra_size > INT_MAX) {
2061                 return AVERROR(EINVAL);
2062             }
2063
2064             /* if stream_copy is selected, no need to decode or encode */
2065             codec->codec_id = icodec->codec_id;
2066             codec->codec_type = icodec->codec_type;
2067
2068             if(!codec->codec_tag){
2069                 if(   !os->oformat->codec_tag
2070                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2071                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2072                     codec->codec_tag = icodec->codec_tag;
2073             }
2074
2075             codec->bit_rate = icodec->bit_rate;
2076             codec->rc_max_rate    = icodec->rc_max_rate;
2077             codec->rc_buffer_size = icodec->rc_buffer_size;
2078             codec->extradata= av_mallocz(extra_size);
2079             if (!codec->extradata) {
2080                 return AVERROR(ENOMEM);
2081             }
2082             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2083             codec->extradata_size= icodec->extradata_size;
2084
2085             codec->time_base = ist->st->time_base;
2086             if(!strcmp(os->oformat->name, "avi")) {
2087                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2088                     codec->time_base = icodec->time_base;
2089                     codec->time_base.num *= icodec->ticks_per_frame;
2090                     codec->time_base.den *= 2;
2091                 }
2092             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2093                 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){
2094                     codec->time_base = icodec->time_base;
2095                     codec->time_base.num *= icodec->ticks_per_frame;
2096                 }
2097             }
2098             av_reduce(&codec->time_base.num, &codec->time_base.den,
2099                         codec->time_base.num, codec->time_base.den, INT_MAX);
2100
2101             switch(codec->codec_type) {
2102             case AVMEDIA_TYPE_AUDIO:
2103                 if(audio_volume != 256) {
2104                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2105                     exit_program(1);
2106                 }
2107                 codec->channel_layout = icodec->channel_layout;
2108                 codec->sample_rate = icodec->sample_rate;
2109                 codec->channels = icodec->channels;
2110                 codec->frame_size = icodec->frame_size;
2111                 codec->audio_service_type = icodec->audio_service_type;
2112                 codec->block_align= icodec->block_align;
2113                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2114                     codec->block_align= 0;
2115                 if(codec->codec_id == CODEC_ID_AC3)
2116                     codec->block_align= 0;
2117                 break;
2118             case AVMEDIA_TYPE_VIDEO:
2119                 codec->pix_fmt = icodec->pix_fmt;
2120                 codec->width = icodec->width;
2121                 codec->height = icodec->height;
2122                 codec->has_b_frames = icodec->has_b_frames;
2123                 if (!codec->sample_aspect_ratio.num) {
2124                     codec->sample_aspect_ratio =
2125                     ost->st->sample_aspect_ratio =
2126                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2127                         ist->st->codec->sample_aspect_ratio.num ?
2128                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2129                 }
2130                 break;
2131             case AVMEDIA_TYPE_SUBTITLE:
2132                 codec->width = icodec->width;
2133                 codec->height = icodec->height;
2134                 break;
2135             case AVMEDIA_TYPE_DATA:
2136             case AVMEDIA_TYPE_ATTACHMENT:
2137                 break;
2138             default:
2139                 abort();
2140             }
2141         } else {
2142             if (!ost->enc)
2143                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2144             ist->decoding_needed = 1;
2145             ost->encoding_needed = 1;
2146             switch(codec->codec_type) {
2147             case AVMEDIA_TYPE_AUDIO:
2148                 ost->fifo= av_fifo_alloc(1024);
2149                 if (!ost->fifo) {
2150                     return AVERROR(ENOMEM);
2151                 }
2152                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2153                 if (!codec->sample_rate) {
2154                     codec->sample_rate = icodec->sample_rate;
2155                 }
2156                 choose_sample_rate(ost->st, ost->enc);
2157                 codec->time_base = (AVRational){1, codec->sample_rate};
2158                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2159                     codec->sample_fmt = icodec->sample_fmt;
2160                 choose_sample_fmt(ost->st, ost->enc);
2161                 if (!codec->channels) {
2162                     codec->channels = icodec->channels;
2163                     codec->channel_layout = icodec->channel_layout;
2164                 }
2165                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2166                     codec->channel_layout = 0;
2167                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2168                 icodec->request_channels = codec->channels;
2169                 ost->resample_sample_fmt  = icodec->sample_fmt;
2170                 ost->resample_sample_rate = icodec->sample_rate;
2171                 ost->resample_channels    = icodec->channels;
2172                 break;
2173             case AVMEDIA_TYPE_VIDEO:
2174                 if (codec->pix_fmt == PIX_FMT_NONE)
2175                     codec->pix_fmt = icodec->pix_fmt;
2176                 choose_pixel_fmt(ost->st, ost->enc);
2177
2178                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2179                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2180                     exit_program(1);
2181                 }
2182
2183                 if (!codec->width || !codec->height) {
2184                     codec->width  = icodec->width;
2185                     codec->height = icodec->height;
2186                 }
2187
2188                 ost->video_resample = codec->width   != icodec->width  ||
2189                                       codec->height  != icodec->height ||
2190                                       codec->pix_fmt != icodec->pix_fmt;
2191                 if (ost->video_resample) {
2192                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2193                 }
2194
2195                 ost->resample_height = icodec->height;
2196                 ost->resample_width  = icodec->width;
2197                 ost->resample_pix_fmt= icodec->pix_fmt;
2198
2199                 if (!ost->frame_rate.num)
2200                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2201                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2202                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2203                     ost->frame_rate = ost->enc->supported_framerates[idx];
2204                 }
2205                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2206                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2207                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2208                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2209                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2210                 }
2211
2212 #if CONFIG_AVFILTER
2213                 if (configure_video_filters(ist, ost)) {
2214                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2215                     exit(1);
2216                 }
2217 #endif
2218                 break;
2219             case AVMEDIA_TYPE_SUBTITLE:
2220                 break;
2221             default:
2222                 abort();
2223                 break;
2224             }
2225             /* two pass mode */
2226             if (codec->codec_id != CODEC_ID_H264 &&
2227                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2228                 char logfilename[1024];
2229                 FILE *f;
2230
2231                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2232                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2233                          i);
2234                 if (codec->flags & CODEC_FLAG_PASS1) {
2235                     f = fopen(logfilename, "wb");
2236                     if (!f) {
2237                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2238                                logfilename, strerror(errno));
2239                         exit_program(1);
2240                     }
2241                     ost->logfile = f;
2242                 } else {
2243                     char  *logbuffer;
2244                     size_t logbuffer_size;
2245                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2246                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2247                                logfilename);
2248                         exit_program(1);
2249                     }
2250                     codec->stats_in = logbuffer;
2251                 }
2252             }
2253         }
2254         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2255             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2256             int size= codec->width * codec->height;
2257             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2258         }
2259     }
2260
2261     if (!bit_buffer)
2262         bit_buffer = av_malloc(bit_buffer_size);
2263     if (!bit_buffer) {
2264         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2265                bit_buffer_size);
2266         return AVERROR(ENOMEM);
2267     }
2268
2269     /* open each encoder */
2270     for (i = 0; i < nb_output_streams; i++) {
2271         ost = &output_streams[i];
2272         if (ost->encoding_needed) {
2273             AVCodec *codec = ost->enc;
2274             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2275             if (!codec) {
2276                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2277                          ost->st->codec->codec_id, ost->file_index, ost->index);
2278                 ret = AVERROR(EINVAL);
2279                 goto dump_format;
2280             }
2281             if (dec->subtitle_header) {
2282                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2283                 if (!ost->st->codec->subtitle_header) {
2284                     ret = AVERROR(ENOMEM);
2285                     goto dump_format;
2286                 }
2287                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2288                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2289             }
2290             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2291                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2292                         ost->file_index, ost->index);
2293                 ret = AVERROR(EINVAL);
2294                 goto dump_format;
2295             }
2296             assert_codec_experimental(ost->st->codec, 1);
2297             assert_avoptions(ost->opts);
2298             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2299                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2300                                              "It takes bits/s as argument, not kbits/s\n");
2301             extra_size += ost->st->codec->extradata_size;
2302
2303             if (ost->st->codec->me_threshold)
2304                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2305         }
2306     }
2307
2308     /* init input streams */
2309     for (i = 0; i < nb_input_streams; i++)
2310         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2311             goto dump_format;
2312
2313     /* discard unused programs */
2314     for (i = 0; i < nb_input_files; i++) {
2315         InputFile *ifile = &input_files[i];
2316         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2317             AVProgram *p = ifile->ctx->programs[j];
2318             int discard  = AVDISCARD_ALL;
2319
2320             for (k = 0; k < p->nb_stream_indexes; k++)
2321                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2322                     discard = AVDISCARD_DEFAULT;
2323                     break;
2324                 }
2325             p->discard = discard;
2326         }
2327     }
2328
2329     /* open files and write file headers */
2330     for (i = 0; i < nb_output_files; i++) {
2331         os = output_files[i].ctx;
2332         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2333             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2334             ret = AVERROR(EINVAL);
2335             goto dump_format;
2336         }
2337 //        assert_avoptions(output_files[i].opts);
2338         if (strcmp(os->oformat->name, "rtp")) {
2339             want_sdp = 0;
2340         }
2341     }
2342
2343  dump_format:
2344     /* dump the file output parameters - cannot be done before in case
2345        of stream copy */
2346     for(i=0;i<nb_output_files;i++) {
2347         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2348     }
2349
2350     /* dump the stream mapping */
2351     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2352     for (i = 0; i < nb_output_streams; i++) {
2353         ost = &output_streams[i];
2354         av_log(NULL, AV_LOG_INFO, "  Stream #%d.%d -> #%d.%d",
2355                input_streams[ost->source_index].file_index,
2356                input_streams[ost->source_index].st->index,
2357                ost->file_index,
2358                ost->index);
2359         if (ost->sync_ist != &input_streams[ost->source_index])
2360             av_log(NULL, AV_LOG_INFO, " [sync #%d.%d]",
2361                    ost->sync_ist->file_index,
2362                    ost->sync_ist->st->index);
2363         if (ost->st->stream_copy)
2364             av_log(NULL, AV_LOG_INFO, " (copy)");
2365         else
2366             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2367                    input_streams[ost->source_index].dec->name : "?",
2368                    ost->enc ? ost->enc->name : "?");
2369         av_log(NULL, AV_LOG_INFO, "\n");
2370     }
2371
2372     if (ret) {
2373         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2374         return ret;
2375     }
2376
2377     if (want_sdp) {
2378         print_sdp(output_files, nb_output_files);
2379     }
2380
2381     return 0;
2382 }
2383
2384 /*
2385  * The following code is the main loop of the file converter
2386  */
2387 static int transcode(OutputFile *output_files,
2388                      int nb_output_files,
2389                      InputFile *input_files,
2390                      int nb_input_files)
2391 {
2392     int ret, i;
2393     AVFormatContext *is, *os;
2394     OutputStream *ost;
2395     InputStream *ist;
2396     uint8_t *no_packet;
2397     int no_packet_count=0;
2398     int64_t timer_start;
2399     int key;
2400
2401     if (!(no_packet = av_mallocz(nb_input_files)))
2402         exit_program(1);
2403
2404     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2405     if (ret < 0)
2406         goto fail;
2407
2408     if (!using_stdin) {
2409         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2410         avio_set_interrupt_cb(decode_interrupt_cb);
2411     }
2412     term_init();
2413
2414     timer_start = av_gettime();
2415
2416     for(; received_sigterm == 0;) {
2417         int file_index, ist_index;
2418         AVPacket pkt;
2419         int64_t ipts_min;
2420         double opts_min;
2421
2422         ipts_min = INT64_MAX;
2423         opts_min= 1e100;
2424         /* if 'q' pressed, exits */
2425         if (!using_stdin) {
2426             if (q_pressed)
2427                 break;
2428             /* read_key() returns 0 on EOF */
2429             key = read_key();
2430             if (key == 'q')
2431                 break;
2432             if (key == '+') av_log_set_level(av_log_get_level()+10);
2433             if (key == '-') av_log_set_level(av_log_get_level()-10);
2434             if (key == 's') qp_hist     ^= 1;
2435             if (key == 'h'){
2436                 if (do_hex_dump){
2437                     do_hex_dump = do_pkt_dump = 0;
2438                 } else if(do_pkt_dump){
2439                     do_hex_dump = 1;
2440                 } else
2441                     do_pkt_dump = 1;
2442                 av_log_set_level(AV_LOG_DEBUG);
2443             }
2444             if (key == 'd' || key == 'D'){
2445                 int debug=0;
2446                 if(key == 'D') {
2447                     debug = input_streams[0].st->codec->debug<<1;
2448                     if(!debug) debug = 1;
2449                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2450                         debug += debug;
2451                 }else
2452                     scanf("%d", &debug);
2453                 for(i=0;i<nb_input_streams;i++) {
2454                     input_streams[i].st->codec->debug = debug;
2455                 }
2456                 for(i=0;i<nb_output_streams;i++) {
2457                     ost = &output_streams[i];
2458                     ost->st->codec->debug = debug;
2459                 }
2460                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2461                 fprintf(stderr,"debug=%d\n", debug);
2462             }
2463             if (key == '?'){
2464                 fprintf(stderr, "key    function\n"
2465                                 "?      show this help\n"
2466                                 "+      increase verbosity\n"
2467                                 "-      decrease verbosity\n"
2468                                 "D      cycle through available debug modes\n"
2469                                 "h      dump packets/hex press to cycle through the 3 states\n"
2470                                 "q      quit\n"
2471                                 "s      Show QP histogram\n"
2472                 );
2473             }
2474         }
2475
2476         /* select the stream that we must read now by looking at the
2477            smallest output pts */
2478         file_index = -1;
2479         for (i = 0; i < nb_output_streams; i++) {
2480             OutputFile *of;
2481             int64_t ipts;
2482             double  opts;
2483             ost = &output_streams[i];
2484             of = &output_files[ost->file_index];
2485             os = output_files[ost->file_index].ctx;
2486             ist = &input_streams[ost->source_index];
2487             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2488                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2489                 continue;
2490             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2491             ipts = ist->pts;
2492             if (!input_files[ist->file_index].eof_reached){
2493                 if(ipts < ipts_min) {
2494                     ipts_min = ipts;
2495                     if(input_sync ) file_index = ist->file_index;
2496                 }
2497                 if(opts < opts_min) {
2498                     opts_min = opts;
2499                     if(!input_sync) file_index = ist->file_index;
2500                 }
2501             }
2502             if (ost->frame_number >= ost->max_frames) {
2503                 int j;
2504                 for (j = 0; j < of->ctx->nb_streams; j++)
2505                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2506                 continue;
2507             }
2508         }
2509         /* if none, if is finished */
2510         if (file_index < 0) {
2511             if(no_packet_count){
2512                 no_packet_count=0;
2513                 memset(no_packet, 0, nb_input_files);
2514                 usleep(10000);
2515                 continue;
2516             }
2517             break;
2518         }
2519
2520         /* read a frame from it and output it in the fifo */
2521         is = input_files[file_index].ctx;
2522         ret= av_read_frame(is, &pkt);
2523         if(ret == AVERROR(EAGAIN)){
2524             no_packet[file_index]=1;
2525             no_packet_count++;
2526             continue;
2527         }
2528         if (ret < 0) {
2529             input_files[file_index].eof_reached = 1;
2530             if (opt_shortest)
2531                 break;
2532             else
2533                 continue;
2534         }
2535
2536         no_packet_count=0;
2537         memset(no_packet, 0, nb_input_files);
2538
2539         if (do_pkt_dump) {
2540             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2541                              is->streams[pkt.stream_index]);
2542         }
2543         /* the following test is needed in case new streams appear
2544            dynamically in stream : we ignore them */
2545         if (pkt.stream_index >= input_files[file_index].nb_streams)
2546             goto discard_packet;
2547         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2548         ist = &input_streams[ist_index];
2549         if (ist->discard)
2550             goto discard_packet;
2551
2552         if (pkt.dts != AV_NOPTS_VALUE)
2553             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2554         if (pkt.pts != AV_NOPTS_VALUE)
2555             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2556
2557         if(pkt.pts != AV_NOPTS_VALUE)
2558             pkt.pts *= ist->ts_scale;
2559         if(pkt.dts != AV_NOPTS_VALUE)
2560             pkt.dts *= ist->ts_scale;
2561
2562 //        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);
2563         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2564             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2565             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2566             int64_t delta= pkt_dts - ist->next_pts;
2567             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2568                 input_files[ist->file_index].ts_offset -= delta;
2569                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2570                        delta, input_files[ist->file_index].ts_offset);
2571                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2572                 if(pkt.pts != AV_NOPTS_VALUE)
2573                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2574             }
2575         }
2576
2577         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2578         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2579
2580             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d.%d\n",
2581                    ist->file_index, ist->st->index);
2582             if (exit_on_error)
2583                 exit_program(1);
2584             av_free_packet(&pkt);
2585             continue;
2586         }
2587
2588     discard_packet:
2589         av_free_packet(&pkt);
2590
2591         /* dump report by using the output first video and audio streams */
2592         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2593     }
2594
2595     /* at the end of stream, we must flush the decoder buffers */
2596     for (i = 0; i < nb_input_streams; i++) {
2597         ist = &input_streams[i];
2598         if (ist->decoding_needed) {
2599             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2600         }
2601     }
2602     flush_encoders(output_streams, nb_output_streams);
2603
2604     term_exit();
2605
2606     /* write the trailer if needed and close file */
2607     for(i=0;i<nb_output_files;i++) {
2608         os = output_files[i].ctx;
2609         av_write_trailer(os);
2610     }
2611
2612     /* dump report by using the first video and audio streams */
2613     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2614
2615     /* close each encoder */
2616     for (i = 0; i < nb_output_streams; i++) {
2617         ost = &output_streams[i];
2618         if (ost->encoding_needed) {
2619             av_freep(&ost->st->codec->stats_in);
2620             avcodec_close(ost->st->codec);
2621         }
2622 #if CONFIG_AVFILTER
2623         avfilter_graph_free(&ost->graph);
2624 #endif
2625     }
2626
2627     /* close each decoder */
2628     for (i = 0; i < nb_input_streams; i++) {
2629         ist = &input_streams[i];
2630         if (ist->decoding_needed) {
2631             avcodec_close(ist->st->codec);
2632         }
2633     }
2634
2635     /* finished ! */
2636     ret = 0;
2637
2638  fail:
2639     av_freep(&bit_buffer);
2640     av_freep(&no_packet);
2641
2642     if (output_streams) {
2643         for (i = 0; i < nb_output_streams; i++) {
2644             ost = &output_streams[i];
2645             if (ost) {
2646                 if (ost->st->stream_copy)
2647                     av_freep(&ost->st->codec->extradata);
2648                 if (ost->logfile) {
2649                     fclose(ost->logfile);
2650                     ost->logfile = NULL;
2651                 }
2652                 av_fifo_free(ost->fifo); /* works even if fifo is not
2653                                              initialized but set to zero */
2654                 av_freep(&ost->st->codec->subtitle_header);
2655                 av_free(ost->resample_frame.data[0]);
2656                 av_free(ost->forced_kf_pts);
2657                 if (ost->video_resample)
2658                     sws_freeContext(ost->img_resample_ctx);
2659                 if (ost->resample)
2660                     audio_resample_close(ost->resample);
2661                 if (ost->reformat_ctx)
2662                     av_audio_convert_free(ost->reformat_ctx);
2663                 av_dict_free(&ost->opts);
2664             }
2665         }
2666     }
2667     return ret;
2668 }
2669
2670 static double parse_frame_aspect_ratio(const char *arg)
2671 {
2672     int x = 0, y = 0;
2673     double ar = 0;
2674     const char *p;
2675     char *end;
2676
2677     p = strchr(arg, ':');
2678     if (p) {
2679         x = strtol(arg, &end, 10);
2680         if (end == p)
2681             y = strtol(end+1, &end, 10);
2682         if (x > 0 && y > 0)
2683             ar = (double)x / (double)y;
2684     } else
2685         ar = strtod(arg, NULL);
2686
2687     if (!ar) {
2688         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2689         exit_program(1);
2690     }
2691     return ar;
2692 }
2693
2694 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2695 {
2696     return parse_option(o, "codec:a", arg, options);
2697 }
2698
2699 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2700 {
2701     return parse_option(o, "codec:v", arg, options);
2702 }
2703
2704 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2705 {
2706     return parse_option(o, "codec:s", arg, options);
2707 }
2708
2709 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2710 {
2711     return parse_option(o, "codec:d", arg, options);
2712 }
2713
2714 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2715 {
2716     StreamMap *m = NULL;
2717     int i, negative = 0, file_idx;
2718     int sync_file_idx = -1, sync_stream_idx;
2719     char *p, *sync;
2720     char *map;
2721
2722     if (*arg == '-') {
2723         negative = 1;
2724         arg++;
2725     }
2726     map = av_strdup(arg);
2727
2728     /* parse sync stream first, just pick first matching stream */
2729     if (sync = strchr(map, ',')) {
2730         *sync = 0;
2731         sync_file_idx = strtol(sync + 1, &sync, 0);
2732         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2733             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2734             exit_program(1);
2735         }
2736         if (*sync)
2737             sync++;
2738         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2739             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2740                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2741                 sync_stream_idx = i;
2742                 break;
2743             }
2744         if (i == input_files[sync_file_idx].nb_streams) {
2745             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2746                                        "match any streams.\n", arg);
2747             exit_program(1);
2748         }
2749     }
2750
2751
2752     file_idx = strtol(map, &p, 0);
2753     if (file_idx >= nb_input_files || file_idx < 0) {
2754         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2755         exit_program(1);
2756     }
2757     if (negative)
2758         /* disable some already defined maps */
2759         for (i = 0; i < o->nb_stream_maps; i++) {
2760             m = &o->stream_maps[i];
2761             if (check_stream_specifier(input_files[m->file_index].ctx,
2762                                        input_files[m->file_index].ctx->streams[m->stream_index],
2763                                        *p == ':' ? p + 1 : p) > 0)
2764                 m->disabled = 1;
2765         }
2766     else
2767         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2768             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2769                         *p == ':' ? p + 1 : p) <= 0)
2770                 continue;
2771             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2772                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2773             m = &o->stream_maps[o->nb_stream_maps - 1];
2774
2775             m->file_index   = file_idx;
2776             m->stream_index = i;
2777
2778             if (sync_file_idx >= 0) {
2779                 m->sync_file_index   = sync_file_idx;
2780                 m->sync_stream_index = sync_stream_idx;
2781             } else {
2782                 m->sync_file_index   = file_idx;
2783                 m->sync_stream_index = i;
2784             }
2785         }
2786
2787     if (!m) {
2788         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2789         exit_program(1);
2790     }
2791
2792     av_freep(&map);
2793     return 0;
2794 }
2795
2796 static void parse_meta_type(char *arg, char *type, int *index)
2797 {
2798     if (*arg) {
2799         *type = *arg;
2800         switch (*arg) {
2801         case 'g':
2802             break;
2803         case 's':
2804         case 'c':
2805         case 'p':
2806             if (*(++arg) == ':')
2807                 *index = strtol(++arg, NULL, 0);
2808             break;
2809         default:
2810             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2811             exit_program(1);
2812         }
2813     } else
2814         *type = 'g';
2815 }
2816
2817 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2818 {
2819     MetadataMap *m, *m1;
2820     char *p;
2821
2822     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2823                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2824
2825     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2826     m->file = strtol(arg, &p, 0);
2827     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2828
2829     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2830     if (p = strchr(opt, ':'))
2831         parse_meta_type(p + 1, &m1->type, &m1->index);
2832     else
2833         m1->type = 'g';
2834
2835     if (m->type == 'g' || m1->type == 'g')
2836         o->metadata_global_manual = 1;
2837     if (m->type == 's' || m1->type == 's')
2838         o->metadata_streams_manual = 1;
2839     if (m->type == 'c' || m1->type == 'c')
2840         o->metadata_chapters_manual = 1;
2841
2842     return 0;
2843 }
2844
2845 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2846 {
2847     const char *codec_string = encoder ? "encoder" : "decoder";
2848     AVCodec *codec;
2849
2850     if(!name)
2851         return CODEC_ID_NONE;
2852     codec = encoder ?
2853         avcodec_find_encoder_by_name(name) :
2854         avcodec_find_decoder_by_name(name);
2855     if(!codec) {
2856         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2857         exit_program(1);
2858     }
2859     if(codec->type != type) {
2860         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2861         exit_program(1);
2862     }
2863     return codec->id;
2864 }
2865
2866 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2867 {
2868     char *codec_name = NULL;
2869
2870     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2871
2872     if (!codec_name) {
2873         if (s->oformat) {
2874             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2875             return avcodec_find_encoder(st->codec->codec_id);
2876         }
2877     } else if (!strcmp(codec_name, "copy"))
2878         st->stream_copy = 1;
2879     else {
2880         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2881         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2882                             avcodec_find_decoder_by_name(codec_name);
2883     }
2884
2885     return NULL;
2886 }
2887
2888 /**
2889  * Add all the streams from the given input file to the global
2890  * list of input streams.
2891  */
2892 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2893 {
2894     int i, rfps, rfps_base;
2895
2896     for (i = 0; i < ic->nb_streams; i++) {
2897         AVStream *st = ic->streams[i];
2898         AVCodecContext *dec = st->codec;
2899         InputStream *ist;
2900         double scale = 1.0;
2901
2902         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2903         ist = &input_streams[nb_input_streams - 1];
2904         ist->st = st;
2905         ist->file_index = nb_input_files;
2906         ist->discard = 1;
2907         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2908
2909         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2910         ist->ts_scale = scale;
2911
2912         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2913         if (!ist->dec)
2914             ist->dec = avcodec_find_decoder(dec->codec_id);
2915
2916         switch (dec->codec_type) {
2917         case AVMEDIA_TYPE_AUDIO:
2918             if(!ist->dec)
2919                 ist->dec = avcodec_find_decoder(dec->codec_id);
2920             if(o->audio_disable)
2921                 st->discard= AVDISCARD_ALL;
2922             break;
2923         case AVMEDIA_TYPE_VIDEO:
2924             if(!ist->dec)
2925                 ist->dec = avcodec_find_decoder(dec->codec_id);
2926             rfps      = ic->streams[i]->r_frame_rate.num;
2927             rfps_base = ic->streams[i]->r_frame_rate.den;
2928             if (dec->lowres) {
2929                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2930             }
2931
2932             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2933
2934                 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",
2935                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2936                        (float)rfps / rfps_base, rfps, rfps_base);
2937             }
2938
2939             if (o->video_disable)
2940                 st->discard= AVDISCARD_ALL;
2941             else if(video_discard)
2942                 st->discard= video_discard;
2943             break;
2944         case AVMEDIA_TYPE_DATA:
2945             break;
2946         case AVMEDIA_TYPE_SUBTITLE:
2947             if(!ist->dec)
2948                 ist->dec = avcodec_find_decoder(dec->codec_id);
2949             if(o->subtitle_disable)
2950                 st->discard = AVDISCARD_ALL;
2951             break;
2952         case AVMEDIA_TYPE_ATTACHMENT:
2953         case AVMEDIA_TYPE_UNKNOWN:
2954             break;
2955         default:
2956             abort();
2957         }
2958     }
2959 }
2960
2961 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2962 {
2963     AVFormatContext *ic;
2964     AVInputFormat *file_iformat = NULL;
2965     int err, i, ret;
2966     int64_t timestamp;
2967     uint8_t buf[128];
2968     AVDictionary **opts;
2969     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2970
2971     if (o->format) {
2972         if (!(file_iformat = av_find_input_format(o->format))) {
2973             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
2974             exit_program(1);
2975         }
2976     }
2977
2978     if (!strcmp(filename, "-"))
2979         filename = "pipe:";
2980
2981     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2982                     !strcmp(filename, "/dev/stdin");
2983
2984     /* get default parameters from command line */
2985     ic = avformat_alloc_context();
2986     if (!ic) {
2987         print_error(filename, AVERROR(ENOMEM));
2988         exit_program(1);
2989     }
2990     if (o->nb_audio_sample_rate) {
2991         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2992         av_dict_set(&format_opts, "sample_rate", buf, 0);
2993     }
2994     if (o->nb_audio_channels) {
2995         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2996         av_dict_set(&format_opts, "channels", buf, 0);
2997     }
2998     if (o->nb_frame_rates) {
2999         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3000     }
3001     if (o->nb_frame_sizes) {
3002         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3003     }
3004     if (o->nb_frame_pix_fmts)
3005         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3006
3007     ic->flags |= AVFMT_FLAG_NONBLOCK;
3008
3009     /* open the input file with generic libav function */
3010     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3011     if (err < 0) {
3012         print_error(filename, err);
3013         exit_program(1);
3014     }
3015     assert_avoptions(format_opts);
3016
3017     /* apply forced codec ids */
3018     for (i = 0; i < ic->nb_streams; i++)
3019         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3020
3021     /* Set AVCodecContext options for avformat_find_stream_info */
3022     opts = setup_find_stream_info_opts(ic, codec_opts);
3023     orig_nb_streams = ic->nb_streams;
3024
3025     /* If not enough info to get the stream parameters, we decode the
3026        first frames to get it. (used in mpeg case for example) */
3027     ret = avformat_find_stream_info(ic, opts);
3028     if (ret < 0) {
3029         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3030         av_close_input_file(ic);
3031         exit_program(1);
3032     }
3033
3034     timestamp = o->start_time;
3035     /* add the stream start time */
3036     if (ic->start_time != AV_NOPTS_VALUE)
3037         timestamp += ic->start_time;
3038
3039     /* if seeking requested, we execute it */
3040     if (o->start_time != 0) {
3041         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3042         if (ret < 0) {
3043             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3044                    filename, (double)timestamp / AV_TIME_BASE);
3045         }
3046     }
3047
3048     /* update the current parameters so that they match the one of the input stream */
3049     add_input_streams(o, ic);
3050
3051     /* dump the file content */
3052     av_dump_format(ic, nb_input_files, filename, 0);
3053
3054     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3055     input_files[nb_input_files - 1].ctx        = ic;
3056     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3057     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3058     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3059     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3060
3061     for (i = 0; i < orig_nb_streams; i++)
3062         av_dict_free(&opts[i]);
3063     av_freep(&opts);
3064
3065     reset_options(o);
3066     return 0;
3067 }
3068
3069 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3070                                     AVCodecContext *avctx)
3071 {
3072     char *p;
3073     int n = 1, i;
3074     int64_t t;
3075
3076     for (p = kf; *p; p++)
3077         if (*p == ',')
3078             n++;
3079     ost->forced_kf_count = n;
3080     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3081     if (!ost->forced_kf_pts) {
3082         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3083         exit_program(1);
3084     }
3085     for (i = 0; i < n; i++) {
3086         p = i ? strchr(p, ',') + 1 : kf;
3087         t = parse_time_or_die("force_key_frames", p, 1);
3088         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3089     }
3090 }
3091
3092 static uint8_t *get_line(AVIOContext *s)
3093 {
3094     AVIOContext *line;
3095     uint8_t *buf;
3096     char c;
3097
3098     if (avio_open_dyn_buf(&line) < 0) {
3099         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3100         exit_program(1);
3101     }
3102
3103     while ((c = avio_r8(s)) && c != '\n')
3104         avio_w8(line, c);
3105     avio_w8(line, 0);
3106     avio_close_dyn_buf(line, &buf);
3107
3108     return buf;
3109 }
3110
3111 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3112 {
3113     int i, ret = 1;
3114     char filename[1000];
3115     const char *base[3] = { getenv("AVCONV_DATADIR"),
3116                             getenv("HOME"),
3117                             AVCONV_DATADIR,
3118                             };
3119
3120     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3121         if (!base[i])
3122             continue;
3123         if (codec_name) {
3124             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3125                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3126             ret = avio_open(s, filename, AVIO_FLAG_READ);
3127         }
3128         if (ret) {
3129             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3130                      i != 1 ? "" : "/.avconv", preset_name);
3131             ret = avio_open(s, filename, AVIO_FLAG_READ);
3132         }
3133     }
3134     return ret;
3135 }
3136
3137 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3138 {
3139     OutputStream *ost;
3140     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
3141     int idx      = oc->nb_streams - 1, ret = 0;
3142     int64_t max_frames = INT64_MAX;
3143     char *bsf = NULL, *next, *codec_tag = NULL;
3144     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3145     double qscale = -1;
3146     char *buf = NULL, *arg = NULL, *preset = NULL;
3147     AVIOContext *s = NULL;
3148
3149     if (!st) {
3150         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3151         exit_program(1);
3152     }
3153
3154     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3155                                 nb_output_streams + 1);
3156     ost = &output_streams[nb_output_streams - 1];
3157     ost->file_index = nb_output_files;
3158     ost->index = idx;
3159     ost->st    = st;
3160     st->codec->codec_type = type;
3161     ost->enc = choose_codec(o, oc, st, type);
3162     if (ost->enc) {
3163         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3164     }
3165
3166     avcodec_get_context_defaults3(st->codec, ost->enc);
3167     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3168
3169     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3170     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3171         do  {
3172             buf = get_line(s);
3173             if (!buf[0] || buf[0] == '#') {
3174                 av_free(buf);
3175                 continue;
3176             }
3177             if (!(arg = strchr(buf, '='))) {
3178                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3179                 exit_program(1);
3180             }
3181             *arg++ = 0;
3182             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3183             av_free(buf);
3184         } while (!s->eof_reached);
3185         avio_close(s);
3186     }
3187     if (ret) {
3188         av_log(NULL, AV_LOG_FATAL,
3189                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3190                preset, ost->file_index, ost->index);
3191         exit_program(1);
3192     }
3193
3194     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3195     ost->max_frames = max_frames;
3196
3197     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3198     while (bsf) {
3199         if (next = strchr(bsf, ','))
3200             *next++ = 0;
3201         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3202             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3203             exit_program(1);
3204         }
3205         if (bsfc_prev)
3206             bsfc_prev->next = bsfc;
3207         else
3208             ost->bitstream_filters = bsfc;
3209
3210         bsfc_prev = bsfc;
3211         bsf       = next;
3212     }
3213
3214     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3215     if (codec_tag) {
3216         uint32_t tag = strtol(codec_tag, &next, 0);
3217         if (*next)
3218             tag = AV_RL32(codec_tag);
3219         st->codec->codec_tag = tag;
3220     }
3221
3222     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3223     if (qscale >= 0 || same_quant) {
3224         st->codec->flags |= CODEC_FLAG_QSCALE;
3225         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3226     }
3227
3228     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3229         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3230
3231     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3232     return ost;
3233 }
3234
3235 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3236 {
3237     int i;
3238     const char *p = str;
3239     for(i = 0;; i++) {
3240         dest[i] = atoi(p);
3241         if(i == 63)
3242             break;
3243         p = strchr(p, ',');
3244         if(!p) {
3245             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3246             exit_program(1);
3247         }
3248         p++;
3249     }
3250 }
3251
3252 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3253 {
3254     AVStream *st;
3255     OutputStream *ost;
3256     AVCodecContext *video_enc;
3257
3258     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3259     st  = ost->st;
3260     video_enc = st->codec;
3261
3262     if (!st->stream_copy) {
3263         const char *p = NULL;
3264         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3265         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3266         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3267         int i, force_fps = 0, top_field_first = -1;
3268
3269         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3270         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3271             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3272             exit_program(1);
3273         }
3274
3275         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3276         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3277             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3278             exit_program(1);
3279         }
3280
3281         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3282         if (frame_aspect_ratio)
3283             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3284
3285         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3286         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3287             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3288             exit_program(1);
3289         }
3290         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3291
3292         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3293         if (intra_matrix) {
3294             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3295                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3296                 exit_program(1);
3297             }
3298             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3299         }
3300         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3301         if (inter_matrix) {
3302             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3303                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3304                 exit_program(1);
3305             }
3306             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3307         }
3308
3309         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3310         for(i=0; p; i++){
3311             int start, end, q;
3312             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3313             if(e!=3){
3314                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3315                 exit_program(1);
3316             }
3317             video_enc->rc_override=
3318                 av_realloc(video_enc->rc_override,
3319                            sizeof(RcOverride)*(i+1));
3320             video_enc->rc_override[i].start_frame= start;
3321             video_enc->rc_override[i].end_frame  = end;
3322             if(q>0){
3323                 video_enc->rc_override[i].qscale= q;
3324                 video_enc->rc_override[i].quality_factor= 1.0;
3325             }
3326             else{
3327                 video_enc->rc_override[i].qscale= 0;
3328                 video_enc->rc_override[i].quality_factor= -q/100.0;
3329             }
3330             p= strchr(p, '/');
3331             if(p) p++;
3332         }
3333         video_enc->rc_override_count=i;
3334         if (!video_enc->rc_initial_buffer_occupancy)
3335             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3336         video_enc->intra_dc_precision= intra_dc_precision - 8;
3337
3338         /* two pass mode */
3339         if (do_pass) {
3340             if (do_pass == 1) {
3341                 video_enc->flags |= CODEC_FLAG_PASS1;
3342             } else {
3343                 video_enc->flags |= CODEC_FLAG_PASS2;
3344             }
3345         }
3346
3347         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3348         if (forced_key_frames)
3349             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3350
3351         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3352         ost->force_fps = force_fps;
3353
3354         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3355         ost->top_field_first = top_field_first;
3356
3357 #if CONFIG_AVFILTER
3358         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3359         if (filters)
3360             ost->avfilter = av_strdup(filters);
3361 #endif
3362     }
3363
3364     return ost;
3365 }
3366
3367 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3368 {
3369     AVStream *st;
3370     OutputStream *ost;
3371     AVCodecContext *audio_enc;
3372
3373     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3374     st  = ost->st;
3375
3376     audio_enc = st->codec;
3377     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3378
3379     if (!st->stream_copy) {
3380         char *sample_fmt = NULL;
3381
3382         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3383
3384         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3385         if (sample_fmt &&
3386             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3387             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3388             exit_program(1);
3389         }
3390
3391         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3392     }
3393
3394     return ost;
3395 }
3396
3397 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3398 {
3399     AVStream *st;
3400     OutputStream *ost;
3401
3402     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3403     st  = ost->st;
3404     if (!st->stream_copy) {
3405         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3406         exit_program(1);
3407     }
3408
3409     return ost;
3410 }
3411
3412 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3413 {
3414     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3415     ost->st->stream_copy = 1;
3416     return ost;
3417 }
3418
3419 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3420 {
3421     AVStream *st;
3422     OutputStream *ost;
3423     AVCodecContext *subtitle_enc;
3424
3425     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3426     st  = ost->st;
3427     subtitle_enc = st->codec;
3428
3429     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3430
3431     return ost;
3432 }
3433
3434 /* arg format is "output-stream-index:streamid-value". */
3435 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3436 {
3437     int idx;
3438     char *p;
3439     char idx_str[16];
3440
3441     av_strlcpy(idx_str, arg, sizeof(idx_str));
3442     p = strchr(idx_str, ':');
3443     if (!p) {
3444         av_log(NULL, AV_LOG_FATAL,
3445                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3446                arg, opt);
3447         exit_program(1);
3448     }
3449     *p++ = '\0';
3450     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3451     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3452     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3453     return 0;
3454 }
3455
3456 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3457 {
3458     AVFormatContext *is = ifile->ctx;
3459     AVFormatContext *os = ofile->ctx;
3460     int i;
3461
3462     for (i = 0; i < is->nb_chapters; i++) {
3463         AVChapter *in_ch = is->chapters[i], *out_ch;
3464         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3465                                       AV_TIME_BASE_Q, in_ch->time_base);
3466         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3467                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3468
3469
3470         if (in_ch->end < ts_off)
3471             continue;
3472         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3473             break;
3474
3475         out_ch = av_mallocz(sizeof(AVChapter));
3476         if (!out_ch)
3477             return AVERROR(ENOMEM);
3478
3479         out_ch->id        = in_ch->id;
3480         out_ch->time_base = in_ch->time_base;
3481         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3482         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3483
3484         if (copy_metadata)
3485             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3486
3487         os->nb_chapters++;
3488         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3489         if (!os->chapters)
3490             return AVERROR(ENOMEM);
3491         os->chapters[os->nb_chapters - 1] = out_ch;
3492     }
3493     return 0;
3494 }
3495
3496 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3497 {
3498     int i, err;
3499     AVFormatContext *ic = NULL;
3500
3501     err = avformat_open_input(&ic, filename, NULL, NULL);
3502     if (err < 0)
3503         return err;
3504     /* copy stream format */
3505     for(i=0;i<ic->nb_streams;i++) {
3506         AVStream *st;
3507         OutputStream *ost;
3508         AVCodec *codec;
3509
3510         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3511         ost   = new_output_stream(o, s, codec->type);
3512         st    = ost->st;
3513
3514         // FIXME: a more elegant solution is needed
3515         memcpy(st, ic->streams[i], sizeof(AVStream));
3516         st->info = av_malloc(sizeof(*st->info));
3517         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3518         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3519
3520         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3521             choose_sample_fmt(st, codec);
3522         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3523             choose_pixel_fmt(st, codec);
3524     }
3525
3526     av_close_input_file(ic);
3527     return 0;
3528 }
3529
3530 static void opt_output_file(void *optctx, const char *filename)
3531 {
3532     OptionsContext *o = optctx;
3533     AVFormatContext *oc;
3534     int i, err;
3535     AVOutputFormat *file_oformat;
3536     OutputStream *ost;
3537     InputStream  *ist;
3538
3539     if (!strcmp(filename, "-"))
3540         filename = "pipe:";
3541
3542     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3543     if (!oc) {
3544         print_error(filename, err);
3545         exit_program(1);
3546     }
3547
3548     file_oformat= oc->oformat;
3549
3550     if (!strcmp(file_oformat->name, "ffm") &&
3551         av_strstart(filename, "http:", NULL)) {
3552         /* special case for files sent to ffserver: we get the stream
3553            parameters from ffserver */
3554         int err = read_ffserver_streams(o, oc, filename);
3555         if (err < 0) {
3556             print_error(filename, err);
3557             exit_program(1);
3558         }
3559     } else if (!o->nb_stream_maps) {
3560         /* pick the "best" stream of each type */
3561 #define NEW_STREAM(type, index)\
3562         if (index >= 0) {\
3563             ost = new_ ## type ## _stream(o, oc);\
3564             ost->source_index = index;\
3565             ost->sync_ist     = &input_streams[index];\
3566             input_streams[index].discard = 0;\
3567         }
3568
3569         /* video: highest resolution */
3570         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3571             int area = 0, idx = -1;
3572             for (i = 0; i < nb_input_streams; i++) {
3573                 ist = &input_streams[i];
3574                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3575                     ist->st->codec->width * ist->st->codec->height > area) {
3576                     area = ist->st->codec->width * ist->st->codec->height;
3577                     idx = i;
3578                 }
3579             }
3580             NEW_STREAM(video, idx);
3581         }
3582
3583         /* audio: most channels */
3584         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3585             int channels = 0, idx = -1;
3586             for (i = 0; i < nb_input_streams; i++) {
3587                 ist = &input_streams[i];
3588                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3589                     ist->st->codec->channels > channels) {
3590                     channels = ist->st->codec->channels;
3591                     idx = i;
3592                 }
3593             }
3594             NEW_STREAM(audio, idx);
3595         }
3596
3597         /* subtitles: pick first */
3598         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3599             for (i = 0; i < nb_input_streams; i++)
3600                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3601                     NEW_STREAM(subtitle, i);
3602                     break;
3603                 }
3604         }
3605         /* do something with data? */
3606     } else {
3607         for (i = 0; i < o->nb_stream_maps; i++) {
3608             StreamMap *map = &o->stream_maps[i];
3609
3610             if (map->disabled)
3611                 continue;
3612
3613             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3614             switch (ist->st->codec->codec_type) {
3615             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3616             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3617             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3618             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3619             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
3620             default:
3621                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d.%d - unsupported type.\n",
3622                        map->file_index, map->stream_index);
3623                 exit_program(1);
3624             }
3625
3626             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3627             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3628                                            map->sync_stream_index];
3629             ist->discard = 0;
3630         }
3631     }