Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.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 #include "libswresample/swresample.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/vsrc_buffer.h"
58 #endif
59
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/types.h>
62 #include <sys/time.h>
63 #include <sys/resource.h>
64 #elif HAVE_GETPROCESSTIMES
65 #include <windows.h>
66 #endif
67 #if HAVE_GETPROCESSMEMORYINFO
68 #include <windows.h>
69 #include <psapi.h>
70 #endif
71
72 #if HAVE_SYS_SELECT_H
73 #include <sys/select.h>
74 #endif
75
76 #if HAVE_TERMIOS_H
77 #include <fcntl.h>
78 #include <sys/ioctl.h>
79 #include <sys/time.h>
80 #include <termios.h>
81 #elif HAVE_KBHIT
82 #include <conio.h>
83 #endif
84 #include <time.h>
85
86 #include "cmdutils.h"
87
88 #include "libavutil/avassert.h"
89
90 const char program_name[] = "ffmpeg";
91 const int program_birth_year = 2000;
92
93 /* select an input stream for an output stream */
94 typedef struct StreamMap {
95     int disabled;           /** 1 is this mapping is disabled by a negative map */
96     int file_index;
97     int stream_index;
98     int sync_file_index;
99     int sync_stream_index;
100 } StreamMap;
101
102 typedef struct {
103     int  file_idx,  stream_idx,  channel_idx; // input
104     int ofile_idx, ostream_idx;               // output
105 } AudioChannelMap;
106
107 /**
108  * select an input file for an output file
109  */
110 typedef struct MetadataMap {
111     int  file;      ///< file index
112     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
113     int  index;     ///< stream/chapter/program number
114 } MetadataMap;
115
116 static const OptionDef options[];
117
118 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
119
120 static int frame_bits_per_raw_sample = 0;
121 static int video_discard = 0;
122 static int same_quant = 0;
123 static int do_deinterlace = 0;
124 static int intra_dc_precision = 8;
125 static int loop_input = 0;
126 static int loop_output = AVFMT_NOOUTPUTLOOP;
127 static int qp_hist = 0;
128 static int intra_only = 0;
129 static const char *video_codec_name    = NULL;
130 static const char *audio_codec_name    = NULL;
131 static const char *subtitle_codec_name = NULL;
132
133 static int file_overwrite = 0;
134 static int do_benchmark = 0;
135 static int do_hex_dump = 0;
136 static int do_pkt_dump = 0;
137 static int do_psnr = 0;
138 static int do_pass = 0;
139 static const char *pass_logfilename_prefix;
140 static int video_sync_method= -1;
141 static int audio_sync_method= 0;
142 static float audio_drift_threshold= 0.1;
143 static int copy_ts= 0;
144 static int copy_tb= 0;
145 static int opt_shortest = 0;
146 static char *vstats_filename;
147 static FILE *vstats_file;
148
149 static int audio_volume = 256;
150
151 static int exit_on_error = 0;
152 static int using_stdin = 0;
153 static int run_as_daemon  = 0;
154 static volatile int received_nb_signals = 0;
155 static int64_t video_size = 0;
156 static int64_t audio_size = 0;
157 static int64_t extra_size = 0;
158 static int nb_frames_dup = 0;
159 static int nb_frames_drop = 0;
160 static int input_sync;
161
162 static float dts_delta_threshold = 10;
163
164 static int print_stats = 1;
165
166 static uint8_t *audio_buf;
167 static uint8_t *audio_out;
168 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
169
170 static void *samples;
171 static uint8_t *input_tmp= NULL;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputStream {
176     int file_index;
177     AVStream *st;
178     int discard;             /* true if stream data should be discarded */
179     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
180     AVCodec *dec;
181
182     int64_t       start;     /* time when read started */
183     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
184                                 is not defined */
185     int64_t       pts;       /* current pts */
186     double ts_scale;
187     int is_start;            /* is 1 at the start and after a discontinuity */
188     int showed_multi_packet_warning;
189     AVDictionary *opts;
190 } InputStream;
191
192 typedef struct InputFile {
193     AVFormatContext *ctx;
194     int eof_reached;      /* true if eof reached */
195     int ist_index;        /* index of first stream in input_streams */
196     int buffer_size;      /* current total buffer size */
197     int64_t ts_offset;
198     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
199                              from ctx.nb_streams if new streams appear during av_read_frame() */
200     int rate_emu;
201 } InputFile;
202
203 typedef struct OutputStream {
204     int file_index;          /* file index */
205     int index;               /* stream index in the output file */
206     int source_index;        /* InputStream index */
207     AVStream *st;            /* stream in the output file */
208     int encoding_needed;     /* true if encoding needed for this stream */
209     int frame_number;
210     /* input pts and corresponding output pts
211        for A/V sync */
212     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
213     struct InputStream *sync_ist; /* input stream to sync against */
214     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
215     AVBitStreamFilterContext *bitstream_filters;
216     AVCodec *enc;
217     int64_t max_frames;
218
219     /* video only */
220     int video_resample;
221     AVFrame resample_frame;              /* temporary frame for image resampling */
222     struct SwsContext *img_resample_ctx; /* for image resampling */
223     int resample_height;
224     int resample_width;
225     int resample_pix_fmt;
226     AVRational frame_rate;
227     int force_fps;
228     int top_field_first;
229
230     float frame_aspect_ratio;
231
232     /* forced key frames */
233     int64_t *forced_kf_pts;
234     int forced_kf_count;
235     int forced_kf_index;
236
237     /* audio only */
238     int audio_resample;
239     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
240     int audio_channels_mapped;           ///< number of channels in audio_channels_map
241     int resample_sample_fmt;
242     int resample_channels;
243     int resample_sample_rate;
244     float rematrix_volume;
245     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
246     FILE *logfile;
247
248     struct SwrContext *swr;
249
250 #if CONFIG_AVFILTER
251     AVFilterContext *output_video_filter;
252     AVFilterContext *input_video_filter;
253     AVFilterBufferRef *picref;
254     char *avfilter;
255     AVFilterGraph *graph;
256 #endif
257
258     int64_t sws_flags;
259     AVDictionary *opts;
260     int is_past_recording_time;
261     int stream_copy;
262     const char *attachment_filename;
263     int copy_initial_nonkeyframes;
264 } OutputStream;
265
266
267 #if HAVE_TERMIOS_H
268
269 /* init terminal so that we can grab keys */
270 static struct termios oldtty;
271 #endif
272
273 typedef struct OutputFile {
274     AVFormatContext *ctx;
275     AVDictionary *opts;
276     int ost_index;       /* index of the first stream in output_streams */
277     int64_t recording_time; /* desired length of the resulting file in microseconds */
278     int64_t start_time;     /* start time in microseconds */
279     uint64_t limit_filesize;
280 } OutputFile;
281
282 static InputStream *input_streams = NULL;
283 static int         nb_input_streams = 0;
284 static InputFile   *input_files   = NULL;
285 static int         nb_input_files   = 0;
286
287 static OutputStream *output_streams = NULL;
288 static int        nb_output_streams = 0;
289 static OutputFile   *output_files   = NULL;
290 static int        nb_output_files   = 0;
291
292 typedef struct OptionsContext {
293     /* input/output options */
294     int64_t start_time;
295     const char *format;
296
297     SpecifierOpt *codec_names;
298     int        nb_codec_names;
299     SpecifierOpt *audio_channels;
300     int        nb_audio_channels;
301     SpecifierOpt *audio_sample_rate;
302     int        nb_audio_sample_rate;
303     SpecifierOpt *rematrix_volume;
304     int        nb_rematrix_volume;
305     SpecifierOpt *frame_rates;
306     int        nb_frame_rates;
307     SpecifierOpt *frame_sizes;
308     int        nb_frame_sizes;
309     SpecifierOpt *frame_pix_fmts;
310     int        nb_frame_pix_fmts;
311
312     /* input options */
313     int64_t input_ts_offset;
314     int rate_emu;
315
316     SpecifierOpt *ts_scale;
317     int        nb_ts_scale;
318     SpecifierOpt *dump_attachment;
319     int        nb_dump_attachment;
320
321     /* output options */
322     StreamMap *stream_maps;
323     int     nb_stream_maps;
324     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
325     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
326     /* first item specifies output metadata, second is input */
327     MetadataMap (*meta_data_maps)[2];
328     int nb_meta_data_maps;
329     int metadata_global_manual;
330     int metadata_streams_manual;
331     int metadata_chapters_manual;
332     const char **attachments;
333     int       nb_attachments;
334
335     int chapters_input_file;
336
337     int64_t recording_time;
338     uint64_t limit_filesize;
339     float mux_preload;
340     float mux_max_delay;
341
342     int video_disable;
343     int audio_disable;
344     int subtitle_disable;
345     int data_disable;
346
347     /* indexed by output file stream index */
348     int   *streamid_map;
349     int nb_streamid_map;
350
351     SpecifierOpt *metadata;
352     int        nb_metadata;
353     SpecifierOpt *max_frames;
354     int        nb_max_frames;
355     SpecifierOpt *bitstream_filters;
356     int        nb_bitstream_filters;
357     SpecifierOpt *codec_tags;
358     int        nb_codec_tags;
359     SpecifierOpt *sample_fmts;
360     int        nb_sample_fmts;
361     SpecifierOpt *qscale;
362     int        nb_qscale;
363     SpecifierOpt *forced_key_frames;
364     int        nb_forced_key_frames;
365     SpecifierOpt *force_fps;
366     int        nb_force_fps;
367     SpecifierOpt *frame_aspect_ratios;
368     int        nb_frame_aspect_ratios;
369     SpecifierOpt *rc_overrides;
370     int        nb_rc_overrides;
371     SpecifierOpt *intra_matrices;
372     int        nb_intra_matrices;
373     SpecifierOpt *inter_matrices;
374     int        nb_inter_matrices;
375     SpecifierOpt *top_field_first;
376     int        nb_top_field_first;
377     SpecifierOpt *presets;
378     int        nb_presets;
379     SpecifierOpt *copy_initial_nonkeyframes;
380     int        nb_copy_initial_nonkeyframes;
381 #if CONFIG_AVFILTER
382     SpecifierOpt *filters;
383     int        nb_filters;
384 #endif
385 } OptionsContext;
386
387 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
388 {\
389     int i, ret;\
390     for (i = 0; i < o->nb_ ## name; i++) {\
391         char *spec = o->name[i].specifier;\
392         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
393             outvar = o->name[i].u.type;\
394         else if (ret < 0)\
395             exit_program(1);\
396     }\
397 }
398
399 static void reset_options(OptionsContext *o, int is_input)
400 {
401     const OptionDef *po = options;
402     OptionsContext bak= *o;
403
404     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
405     while (po->name) {
406         void *dst = (uint8_t*)o + po->u.off;
407
408         if (po->flags & OPT_SPEC) {
409             SpecifierOpt **so = dst;
410             int i, *count = (int*)(so + 1);
411             for (i = 0; i < *count; i++) {
412                 av_freep(&(*so)[i].specifier);
413                 if (po->flags & OPT_STRING)
414                     av_freep(&(*so)[i].u.str);
415             }
416             av_freep(so);
417             *count = 0;
418         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
419             av_freep(dst);
420         po++;
421     }
422
423     av_freep(&o->stream_maps);
424     av_freep(&o->audio_channel_maps);
425     av_freep(&o->meta_data_maps);
426     av_freep(&o->streamid_map);
427
428     memset(o, 0, sizeof(*o));
429
430     if(is_input) o->recording_time = bak.recording_time;
431     else         o->recording_time = INT64_MAX;
432     o->mux_max_delay  = 0.7;
433     o->limit_filesize = UINT64_MAX;
434     o->chapters_input_file = INT_MAX;
435
436     uninit_opts();
437     init_opts();
438 }
439
440 #if CONFIG_AVFILTER
441
442 static int configure_video_filters(InputStream *ist, OutputStream *ost)
443 {
444     AVFilterContext *last_filter, *filter;
445     /** filter graph containing all filters including input & output */
446     AVCodecContext *codec = ost->st->codec;
447     AVCodecContext *icodec = ist->st->codec;
448     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
449     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
450     AVRational sample_aspect_ratio;
451     char args[255];
452     int ret;
453
454     ost->graph = avfilter_graph_alloc();
455
456     if (ist->st->sample_aspect_ratio.num){
457         sample_aspect_ratio = ist->st->sample_aspect_ratio;
458     }else
459         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
460
461     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
462              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
463              sample_aspect_ratio.num, sample_aspect_ratio.den);
464
465     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
466                                        "src", args, NULL, ost->graph);
467     if (ret < 0)
468         return ret;
469 #if FF_API_OLD_VSINK_API
470     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
471                                        "out", NULL, pix_fmts, ost->graph);
472 #else
473     buffersink_params->pixel_fmts = pix_fmts;
474     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
475                                        "out", NULL, buffersink_params, ost->graph);
476 #endif
477     av_freep(&buffersink_params);
478     if (ret < 0)
479         return ret;
480     last_filter = ost->input_video_filter;
481
482     if (codec->width  != icodec->width || codec->height != icodec->height) {
483         snprintf(args, 255, "%d:%d:flags=0x%X",
484                  codec->width,
485                  codec->height,
486                  (unsigned)ost->sws_flags);
487         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
488                                                 NULL, args, NULL, ost->graph)) < 0)
489             return ret;
490         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
491             return ret;
492         last_filter = filter;
493     }
494
495     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
496     ost->graph->scale_sws_opts = av_strdup(args);
497
498     if (ost->avfilter) {
499         AVFilterInOut *outputs = avfilter_inout_alloc();
500         AVFilterInOut *inputs  = avfilter_inout_alloc();
501
502         outputs->name    = av_strdup("in");
503         outputs->filter_ctx = last_filter;
504         outputs->pad_idx = 0;
505         outputs->next    = NULL;
506
507         inputs->name    = av_strdup("out");
508         inputs->filter_ctx = ost->output_video_filter;
509         inputs->pad_idx = 0;
510         inputs->next    = NULL;
511
512         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
513             return ret;
514         av_freep(&ost->avfilter);
515     } else {
516         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
517             return ret;
518     }
519
520     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
521         return ret;
522
523     codec->width  = ost->output_video_filter->inputs[0]->w;
524     codec->height = ost->output_video_filter->inputs[0]->h;
525     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
526         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
527         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
528         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
529
530     return 0;
531 }
532 #endif /* CONFIG_AVFILTER */
533
534 static void term_exit(void)
535 {
536     av_log(NULL, AV_LOG_QUIET, "%s", "");
537 #if HAVE_TERMIOS_H
538     if(!run_as_daemon)
539         tcsetattr (0, TCSANOW, &oldtty);
540 #endif
541 }
542
543 static volatile int received_sigterm = 0;
544
545 static void sigterm_handler(int sig)
546 {
547     received_sigterm = sig;
548     received_nb_signals++;
549     term_exit();
550 }
551
552 static void term_init(void)
553 {
554 #if HAVE_TERMIOS_H
555     if(!run_as_daemon){
556     struct termios tty;
557
558     tcgetattr (0, &tty);
559     oldtty = tty;
560     atexit(term_exit);
561
562     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
563                           |INLCR|IGNCR|ICRNL|IXON);
564     tty.c_oflag |= OPOST;
565     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
566     tty.c_cflag &= ~(CSIZE|PARENB);
567     tty.c_cflag |= CS8;
568     tty.c_cc[VMIN] = 1;
569     tty.c_cc[VTIME] = 0;
570
571     tcsetattr (0, TCSANOW, &tty);
572     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
573     }
574 #endif
575     avformat_network_deinit();
576
577     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
578     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
579 #ifdef SIGXCPU
580     signal(SIGXCPU, sigterm_handler);
581 #endif
582 }
583
584 /* read a key without blocking */
585 static int read_key(void)
586 {
587     unsigned char ch;
588 #if HAVE_TERMIOS_H
589     int n = 1;
590     struct timeval tv;
591     fd_set rfds;
592
593     FD_ZERO(&rfds);
594     FD_SET(0, &rfds);
595     tv.tv_sec = 0;
596     tv.tv_usec = 0;
597     n = select(1, &rfds, NULL, NULL, &tv);
598     if (n > 0) {
599         n = read(0, &ch, 1);
600         if (n == 1)
601             return ch;
602
603         return n;
604     }
605 #elif HAVE_KBHIT
606 #    if HAVE_PEEKNAMEDPIPE
607     static int is_pipe;
608     static HANDLE input_handle;
609     DWORD dw, nchars;
610     if(!input_handle){
611         input_handle = GetStdHandle(STD_INPUT_HANDLE);
612         is_pipe = !GetConsoleMode(input_handle, &dw);
613     }
614
615     if (stdin->_cnt > 0) {
616         read(0, &ch, 1);
617         return ch;
618     }
619     if (is_pipe) {
620         /* When running under a GUI, you will end here. */
621         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
622             return -1;
623         //Read it
624         if(nchars != 0) {
625             read(0, &ch, 1);
626             return ch;
627         }else{
628             return -1;
629         }
630     }
631 #    endif
632     if(kbhit())
633         return(getch());
634 #endif
635     return -1;
636 }
637
638 static int decode_interrupt_cb(void *ctx)
639 {
640     return received_nb_signals > 1;
641 }
642
643 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
644
645 void av_noreturn exit_program(int ret)
646 {
647     int i;
648
649     /* close files */
650     for(i=0;i<nb_output_files;i++) {
651         AVFormatContext *s = output_files[i].ctx;
652         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
653             avio_close(s->pb);
654         avformat_free_context(s);
655         av_dict_free(&output_files[i].opts);
656     }
657     for(i=0;i<nb_input_files;i++) {
658         av_close_input_file(input_files[i].ctx);
659     }
660     for (i = 0; i < nb_input_streams; i++)
661         av_dict_free(&input_streams[i].opts);
662
663     if (vstats_file)
664         fclose(vstats_file);
665     av_free(vstats_filename);
666
667     av_freep(&input_streams);
668     av_freep(&input_files);
669     av_freep(&output_streams);
670     av_freep(&output_files);
671
672     uninit_opts();
673     av_free(audio_buf);
674     av_free(audio_out);
675     allocated_audio_buf_size= allocated_audio_out_size= 0;
676     av_free(samples);
677
678 #if CONFIG_AVFILTER
679     avfilter_uninit();
680 #endif
681     avformat_network_deinit();
682
683     av_freep(&input_tmp);
684
685     if (received_sigterm) {
686         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
687                (int) received_sigterm);
688         exit (255);
689     }
690
691     exit(ret); /* not all OS-es handle main() return value */
692 }
693
694 static void assert_avoptions(AVDictionary *m)
695 {
696     AVDictionaryEntry *t;
697     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
698         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
699         exit_program(1);
700     }
701 }
702
703 static void assert_codec_experimental(AVCodecContext *c, int encoder)
704 {
705     const char *codec_string = encoder ? "encoder" : "decoder";
706     AVCodec *codec;
707     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
708         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
709         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
710                 "results.\nAdd '-strict experimental' if you want to use it.\n",
711                 codec_string, c->codec->name);
712         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
713         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
714             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
715                    codec_string, codec->name);
716         exit_program(1);
717     }
718 }
719
720 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
721 {
722     if(codec && codec->sample_fmts){
723         const enum AVSampleFormat *p= codec->sample_fmts;
724         for(; *p!=-1; p++){
725             if(*p == st->codec->sample_fmt)
726                 break;
727         }
728         if (*p == -1) {
729             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
730                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
731             if(av_get_sample_fmt_name(st->codec->sample_fmt))
732             av_log(NULL, AV_LOG_WARNING,
733                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
734                    av_get_sample_fmt_name(st->codec->sample_fmt),
735                    codec->name,
736                    av_get_sample_fmt_name(codec->sample_fmts[0]));
737             st->codec->sample_fmt = codec->sample_fmts[0];
738         }
739     }
740 }
741
742 static void choose_sample_rate(AVStream *st, AVCodec *codec)
743 {
744     if(codec && codec->supported_samplerates){
745         const int *p= codec->supported_samplerates;
746         int best=0;
747         int best_dist=INT_MAX;
748         for(; *p; p++){
749             int dist= abs(st->codec->sample_rate - *p);
750             if(dist < best_dist){
751                 best_dist= dist;
752                 best= *p;
753             }
754         }
755         if(best_dist){
756             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
757         }
758         st->codec->sample_rate= best;
759     }
760 }
761
762 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
763 {
764     if(codec && codec->pix_fmts){
765         const enum PixelFormat *p= codec->pix_fmts;
766         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
767             if(st->codec->codec_id==CODEC_ID_MJPEG){
768                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
769             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
770                 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};
771             }
772         }
773         for(; *p!=-1; p++){
774             if(*p == st->codec->pix_fmt)
775                 break;
776         }
777         if (*p == -1) {
778             if(st->codec->pix_fmt != PIX_FMT_NONE)
779                 av_log(NULL, AV_LOG_WARNING,
780                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
781                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
782                         codec->name,
783                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
784             st->codec->pix_fmt = codec->pix_fmts[0];
785         }
786     }
787 }
788
789 static double get_sync_ipts(const OutputStream *ost)
790 {
791     const InputStream *ist = ost->sync_ist;
792     OutputFile *of = &output_files[ost->file_index];
793     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
794 }
795
796 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
797 {
798     int ret;
799
800     while(bsfc){
801         AVPacket new_pkt= *pkt;
802         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
803                                           &new_pkt.data, &new_pkt.size,
804                                           pkt->data, pkt->size,
805                                           pkt->flags & AV_PKT_FLAG_KEY);
806         if(a>0){
807             av_free_packet(pkt);
808             new_pkt.destruct= av_destruct_packet;
809         } else if(a<0){
810             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
811                    bsfc->filter->name, pkt->stream_index,
812                    avctx->codec ? avctx->codec->name : "copy");
813             print_error("", a);
814             if (exit_on_error)
815                 exit_program(1);
816         }
817         *pkt= new_pkt;
818
819         bsfc= bsfc->next;
820     }
821
822     ret= av_interleaved_write_frame(s, pkt);
823     if(ret < 0){
824         print_error("av_interleaved_write_frame()", ret);
825         exit_program(1);
826     }
827 }
828
829 static void do_audio_out(AVFormatContext *s,
830                          OutputStream *ost,
831                          InputStream *ist,
832                          unsigned char *buf, int size)
833 {
834     uint8_t *buftmp;
835     int64_t audio_out_size, audio_buf_size;
836     int64_t allocated_for_size= size;
837
838     int size_out, frame_bytes, ret, resample_changed;
839     AVCodecContext *enc= ost->st->codec;
840     AVCodecContext *dec= ist->st->codec;
841     int osize = av_get_bytes_per_sample(enc->sample_fmt);
842     int isize = av_get_bytes_per_sample(dec->sample_fmt);
843     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
844
845 need_realloc:
846     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
847     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
848     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
849     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
850     audio_buf_size*= osize*enc->channels;
851
852     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
853     if(coded_bps > 8*osize)
854         audio_out_size= audio_out_size * coded_bps / (8*osize);
855     audio_out_size += FF_MIN_BUFFER_SIZE;
856
857     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
858         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
859         exit_program(1);
860     }
861
862     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
863     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
864     if (!audio_buf || !audio_out){
865         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
866         exit_program(1);
867     }
868
869     if (enc->channels != dec->channels
870      || enc->sample_fmt != dec->sample_fmt)
871         ost->audio_resample = 1;
872
873     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
874                        ost->resample_channels    != dec->channels   ||
875                        ost->resample_sample_rate != dec->sample_rate;
876
877     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
878         if (resample_changed) {
879             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",
880                    ist->file_index, ist->st->index,
881                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
882                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
883             ost->resample_sample_fmt  = dec->sample_fmt;
884             ost->resample_channels    = dec->channels;
885             ost->resample_sample_rate = dec->sample_rate;
886             swr_free(&ost->swr);
887         }
888         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
889         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
890             ost->resample_sample_fmt  == enc->sample_fmt &&
891             ost->resample_channels    == enc->channels   &&
892             ost->resample_sample_rate == enc->sample_rate) {
893             //ost->swr = NULL;
894             ost->audio_resample = 0;
895         } else {
896             ost->swr = swr_alloc_set_opts(ost->swr,
897                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
898                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
899                                           0, NULL);
900             if (ost->audio_channels_mapped)
901                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
902             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
903             if (ost->audio_channels_mapped) {
904                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
905                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
906             }
907             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
908             av_opt_set_int(ost->swr, "och", enc->channels, 0);
909             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
910             if(ost->swr && swr_init(ost->swr) < 0){
911                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
912                 swr_free(&ost->swr);
913             }
914
915             if (!ost->swr) {
916                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
917                         dec->channels, dec->sample_rate,
918                         enc->channels, enc->sample_rate);
919                 exit_program(1);
920             }
921         }
922     }
923
924     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
925
926     if(audio_sync_method){
927         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
928                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
929         double idelta= delta*dec->sample_rate / enc->sample_rate;
930         int byte_delta= ((int)idelta)*2*dec->channels;
931
932         //FIXME resample delay
933         if(fabs(delta) > 50){
934             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
935                 if(byte_delta < 0){
936                     byte_delta= FFMAX(byte_delta, -size);
937                     size += byte_delta;
938                     buf  -= byte_delta;
939                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
940                     if(!size)
941                         return;
942                     ist->is_start=0;
943                 }else{
944                     input_tmp= av_realloc(input_tmp, byte_delta + size);
945
946                     if(byte_delta > allocated_for_size - size){
947                         allocated_for_size= byte_delta + (int64_t)size;
948                         goto need_realloc;
949                     }
950                     ist->is_start=0;
951
952                     memset(input_tmp, 0, byte_delta);
953                     memcpy(input_tmp + byte_delta, buf, size);
954                     buf= input_tmp;
955                     size += byte_delta;
956                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
957                 }
958             }else if(audio_sync_method>1){
959                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
960                 av_assert0(ost->audio_resample);
961                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
962                        delta, comp, enc->sample_rate);
963 //                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));
964                 swr_compensate(ost->swr, comp, enc->sample_rate);
965             }
966         }
967     }else
968         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
969                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
970
971     if (ost->audio_resample) {
972         buftmp = audio_buf;
973         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
974                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
975         size_out = size_out * enc->channels * osize;
976     } else {
977         buftmp = buf;
978         size_out = size;
979     }
980
981     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
982
983     /* now encode as many frames as possible */
984     if (enc->frame_size > 1) {
985         /* output resampled raw samples */
986         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
987             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
988             exit_program(1);
989         }
990         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
991
992         frame_bytes = enc->frame_size * osize * enc->channels;
993
994         while (av_fifo_size(ost->fifo) >= frame_bytes) {
995             AVPacket pkt;
996             av_init_packet(&pkt);
997
998             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
999
1000             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1001
1002             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1003                                        (short *)audio_buf);
1004             if (ret < 0) {
1005                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1006                 exit_program(1);
1007             }
1008             audio_size += ret;
1009             pkt.stream_index= ost->index;
1010             pkt.data= audio_out;
1011             pkt.size= ret;
1012             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1013                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1014             pkt.flags |= AV_PKT_FLAG_KEY;
1015             write_frame(s, &pkt, enc, ost->bitstream_filters);
1016
1017             ost->sync_opts += enc->frame_size;
1018         }
1019     } else {
1020         AVPacket pkt;
1021         av_init_packet(&pkt);
1022
1023         ost->sync_opts += size_out / (osize * enc->channels);
1024
1025         /* output a pcm frame */
1026         /* determine the size of the coded buffer */
1027         size_out /= osize;
1028         if (coded_bps)
1029             size_out = size_out*coded_bps/8;
1030
1031         if(size_out > audio_out_size){
1032             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1033             exit_program(1);
1034         }
1035
1036         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1037         ret = avcodec_encode_audio(enc, audio_out, size_out,
1038                                    (short *)buftmp);
1039         if (ret < 0) {
1040             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1041             exit_program(1);
1042         }
1043         audio_size += ret;
1044         pkt.stream_index= ost->index;
1045         pkt.data= audio_out;
1046         pkt.size= ret;
1047         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1048             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1049         pkt.flags |= AV_PKT_FLAG_KEY;
1050         write_frame(s, &pkt, enc, ost->bitstream_filters);
1051     }
1052 }
1053
1054 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1055 {
1056     AVCodecContext *dec;
1057     AVPicture *picture2;
1058     AVPicture picture_tmp;
1059     uint8_t *buf = 0;
1060
1061     dec = ist->st->codec;
1062
1063     /* deinterlace : must be done before any resize */
1064     if (do_deinterlace) {
1065         int size;
1066
1067         /* create temporary picture */
1068         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1069         buf = av_malloc(size);
1070         if (!buf)
1071             return;
1072
1073         picture2 = &picture_tmp;
1074         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1075
1076         if(avpicture_deinterlace(picture2, picture,
1077                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1078             /* if error, do not deinterlace */
1079             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1080             av_free(buf);
1081             buf = NULL;
1082             picture2 = picture;
1083         }
1084     } else {
1085         picture2 = picture;
1086     }
1087
1088     if (picture != picture2)
1089         *picture = *picture2;
1090     *bufp = buf;
1091 }
1092
1093 static void do_subtitle_out(AVFormatContext *s,
1094                             OutputStream *ost,
1095                             InputStream *ist,
1096                             AVSubtitle *sub,
1097                             int64_t pts)
1098 {
1099     static uint8_t *subtitle_out = NULL;
1100     int subtitle_out_max_size = 1024 * 1024;
1101     int subtitle_out_size, nb, i;
1102     AVCodecContext *enc;
1103     AVPacket pkt;
1104
1105     if (pts == AV_NOPTS_VALUE) {
1106         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1107         if (exit_on_error)
1108             exit_program(1);
1109         return;
1110     }
1111
1112     enc = ost->st->codec;
1113
1114     if (!subtitle_out) {
1115         subtitle_out = av_malloc(subtitle_out_max_size);
1116     }
1117
1118     /* Note: DVB subtitle need one packet to draw them and one other
1119        packet to clear them */
1120     /* XXX: signal it in the codec context ? */
1121     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1122         nb = 2;
1123     else
1124         nb = 1;
1125
1126     for(i = 0; i < nb; i++) {
1127         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1128         // start_display_time is required to be 0
1129         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1130         sub->end_display_time -= sub->start_display_time;
1131         sub->start_display_time = 0;
1132         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1133                                                     subtitle_out_max_size, sub);
1134         if (subtitle_out_size < 0) {
1135             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1136             exit_program(1);
1137         }
1138
1139         av_init_packet(&pkt);
1140         pkt.stream_index = ost->index;
1141         pkt.data = subtitle_out;
1142         pkt.size = subtitle_out_size;
1143         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1144         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1145             /* XXX: the pts correction is handled here. Maybe handling
1146                it in the codec would be better */
1147             if (i == 0)
1148                 pkt.pts += 90 * sub->start_display_time;
1149             else
1150                 pkt.pts += 90 * sub->end_display_time;
1151         }
1152         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1153     }
1154 }
1155
1156 static int bit_buffer_size= 1024*256;
1157 static uint8_t *bit_buffer= NULL;
1158
1159 static void do_video_resample(OutputStream *ost,
1160                               InputStream *ist,
1161                               AVFrame *in_picture,
1162                               AVFrame **out_picture)
1163 {
1164 #if CONFIG_AVFILTER
1165     *out_picture = in_picture;
1166 #else
1167     AVCodecContext *dec = ist->st->codec;
1168     AVCodecContext *enc = ost->st->codec;
1169     int resample_changed = ost->resample_width   != dec->width  ||
1170                            ost->resample_height  != dec->height ||
1171                            ost->resample_pix_fmt != dec->pix_fmt;
1172
1173     *out_picture = in_picture;
1174     if (resample_changed) {
1175         av_log(NULL, AV_LOG_INFO,
1176                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1177                ist->file_index, ist->st->index,
1178                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1179                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1180         ost->resample_width   = dec->width;
1181         ost->resample_height  = dec->height;
1182         ost->resample_pix_fmt = dec->pix_fmt;
1183     }
1184
1185     ost->video_resample = dec->width   != enc->width  ||
1186                           dec->height  != enc->height ||
1187                           dec->pix_fmt != enc->pix_fmt;
1188
1189     if (ost->video_resample) {
1190         *out_picture = &ost->resample_frame;
1191         if (!ost->img_resample_ctx || resample_changed) {
1192             /* initialize the destination picture */
1193             if (!ost->resample_frame.data[0]) {
1194                 avcodec_get_frame_defaults(&ost->resample_frame);
1195                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1196                                     enc->width, enc->height)) {
1197                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1198                     exit_program(1);
1199                 }
1200             }
1201             /* initialize a new scaler context */
1202             sws_freeContext(ost->img_resample_ctx);
1203             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1204                                                    enc->width, enc->height, enc->pix_fmt,
1205                                                    ost->sws_flags, NULL, NULL, NULL);
1206             if (ost->img_resample_ctx == NULL) {
1207                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1208                 exit_program(1);
1209             }
1210         }
1211         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1212               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1213     }
1214 #endif
1215 }
1216
1217
1218 static void do_video_out(AVFormatContext *s,
1219                          OutputStream *ost,
1220                          InputStream *ist,
1221                          AVFrame *in_picture,
1222                          int *frame_size, float quality)
1223 {
1224     int nb_frames, i, ret, format_video_sync;
1225     AVFrame *final_picture;
1226     AVCodecContext *enc;
1227     double sync_ipts;
1228     double duration = 0;
1229
1230     enc = ost->st->codec;
1231
1232     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1233         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1234         if(ist->st->avg_frame_rate.num)
1235             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1236
1237         duration /= av_q2d(enc->time_base);
1238     }
1239
1240     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1241
1242     /* by default, we output a single frame */
1243     nb_frames = 1;
1244
1245     *frame_size = 0;
1246
1247     format_video_sync = video_sync_method;
1248     if (format_video_sync < 0)
1249         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1250
1251     if (format_video_sync) {
1252         double vdelta = sync_ipts - ost->sync_opts + duration;
1253         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1254         if (vdelta < -1.1)
1255             nb_frames = 0;
1256         else if (format_video_sync == 2) {
1257             if(vdelta<=-0.6){
1258                 nb_frames=0;
1259             }else if(vdelta>0.6)
1260                 ost->sync_opts= lrintf(sync_ipts);
1261         }else if (vdelta > 1.1)
1262             nb_frames = lrintf(vdelta);
1263 //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);
1264         if (nb_frames == 0){
1265             ++nb_frames_drop;
1266             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1267         }else if (nb_frames > 1) {
1268             nb_frames_dup += nb_frames - 1;
1269             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1270         }
1271     }else
1272         ost->sync_opts= lrintf(sync_ipts);
1273
1274     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1275     if (nb_frames <= 0)
1276         return;
1277
1278     do_video_resample(ost, ist, in_picture, &final_picture);
1279
1280     /* duplicates frame if needed */
1281     for(i=0;i<nb_frames;i++) {
1282         AVPacket pkt;
1283         av_init_packet(&pkt);
1284         pkt.stream_index= ost->index;
1285
1286         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1287             /* raw pictures are written as AVPicture structure to
1288                avoid any copies. We support temporarily the older
1289                method. */
1290             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1291             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1292             pkt.data= (uint8_t *)final_picture;
1293             pkt.size=  sizeof(AVPicture);
1294             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1295             pkt.flags |= AV_PKT_FLAG_KEY;
1296
1297             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1298         } else {
1299             AVFrame big_picture;
1300
1301             big_picture= *final_picture;
1302             /* better than nothing: use input picture interlaced
1303                settings */
1304             big_picture.interlaced_frame = in_picture->interlaced_frame;
1305             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1306                 if (ost->top_field_first == -1)
1307                     big_picture.top_field_first = in_picture->top_field_first;
1308                 else
1309                     big_picture.top_field_first = !!ost->top_field_first;
1310             }
1311
1312             /* handles same_quant here. This is not correct because it may
1313                not be a global option */
1314             big_picture.quality = quality;
1315             if (!enc->me_threshold)
1316                 big_picture.pict_type = 0;
1317 //            big_picture.pts = AV_NOPTS_VALUE;
1318             big_picture.pts= ost->sync_opts;
1319 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1320 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1321             if (ost->forced_kf_index < ost->forced_kf_count &&
1322                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1323                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1324                 ost->forced_kf_index++;
1325             }
1326             ret = avcodec_encode_video(enc,
1327                                        bit_buffer, bit_buffer_size,
1328                                        &big_picture);
1329             if (ret < 0) {
1330                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1331                 exit_program(1);
1332             }
1333
1334             if(ret>0){
1335                 pkt.data= bit_buffer;
1336                 pkt.size= ret;
1337                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1338                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1339 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1340    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1341    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1342
1343                 if(enc->coded_frame->key_frame)
1344                     pkt.flags |= AV_PKT_FLAG_KEY;
1345                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1346                 *frame_size = ret;
1347                 video_size += ret;
1348                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1349                 //        enc->frame_number-1, ret, enc->pict_type);
1350                 /* if two pass, output log */
1351                 if (ost->logfile && enc->stats_out) {
1352                     fprintf(ost->logfile, "%s", enc->stats_out);
1353                 }
1354             }
1355         }
1356         ost->sync_opts++;
1357         ost->frame_number++;
1358     }
1359 }
1360
1361 static double psnr(double d)
1362 {
1363     return -10.0*log(d)/log(10.0);
1364 }
1365
1366 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1367                            int frame_size)
1368 {
1369     AVCodecContext *enc;
1370     int frame_number;
1371     double ti1, bitrate, avg_bitrate;
1372
1373     /* this is executed just the first time do_video_stats is called */
1374     if (!vstats_file) {
1375         vstats_file = fopen(vstats_filename, "w");
1376         if (!vstats_file) {
1377             perror("fopen");
1378             exit_program(1);
1379         }
1380     }
1381
1382     enc = ost->st->codec;
1383     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1384         frame_number = ost->frame_number;
1385         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1386         if (enc->flags&CODEC_FLAG_PSNR)
1387             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1388
1389         fprintf(vstats_file,"f_size= %6d ", frame_size);
1390         /* compute pts value */
1391         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1392         if (ti1 < 0.01)
1393             ti1 = 0.01;
1394
1395         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1396         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1397         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1398             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1399         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1400     }
1401 }
1402
1403 static void print_report(OutputFile *output_files,
1404                          OutputStream *ost_table, int nb_ostreams,
1405                          int is_last_report, int64_t timer_start, int64_t cur_time)
1406 {
1407     char buf[1024];
1408     OutputStream *ost;
1409     AVFormatContext *oc;
1410     int64_t total_size;
1411     AVCodecContext *enc;
1412     int frame_number, vid, i;
1413     double bitrate;
1414     int64_t pts = INT64_MAX;
1415     static int64_t last_time = -1;
1416     static int qp_histogram[52];
1417     int hours, mins, secs, us;
1418
1419     if (!print_stats && !is_last_report)
1420         return;
1421
1422     if (!is_last_report) {
1423         if (last_time == -1) {
1424             last_time = cur_time;
1425             return;
1426         }
1427         if ((cur_time - last_time) < 500000)
1428             return;
1429         last_time = cur_time;
1430     }
1431
1432
1433     oc = output_files[0].ctx;
1434
1435     total_size = avio_size(oc->pb);
1436     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1437         total_size= avio_tell(oc->pb);
1438
1439     buf[0] = '\0';
1440     vid = 0;
1441     for(i=0;i<nb_ostreams;i++) {
1442         float q = -1;
1443         ost = &ost_table[i];
1444         enc = ost->st->codec;
1445         if (!ost->stream_copy && enc->coded_frame)
1446             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1447         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1448             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1449         }
1450         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1451             float t = (cur_time-timer_start) / 1000000.0;
1452
1453             frame_number = ost->frame_number;
1454             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1455                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1456             if(is_last_report)
1457                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1458             if(qp_hist){
1459                 int j;
1460                 int qp = lrintf(q);
1461                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1462                     qp_histogram[qp]++;
1463                 for(j=0; j<32; j++)
1464                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1465             }
1466             if (enc->flags&CODEC_FLAG_PSNR){
1467                 int j;
1468                 double error, error_sum=0;
1469                 double scale, scale_sum=0;
1470                 char type[3]= {'Y','U','V'};
1471                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1472                 for(j=0; j<3; j++){
1473                     if(is_last_report){
1474                         error= enc->error[j];
1475                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1476                     }else{
1477                         error= enc->coded_frame->error[j];
1478                         scale= enc->width*enc->height*255.0*255.0;
1479                     }
1480                     if(j) scale/=4;
1481                     error_sum += error;
1482                     scale_sum += scale;
1483                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1484                 }
1485                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1486             }
1487             vid = 1;
1488         }
1489         /* compute min output value */
1490         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1491                                       ost->st->time_base, AV_TIME_BASE_Q));
1492     }
1493
1494     secs = pts / AV_TIME_BASE;
1495     us = pts % AV_TIME_BASE;
1496     mins = secs / 60;
1497     secs %= 60;
1498     hours = mins / 60;
1499     mins %= 60;
1500
1501     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1502
1503     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1504              "size=%8.0fkB time=", total_size / 1024.0);
1505     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1506              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1507              (100 * us) / AV_TIME_BASE);
1508     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1509              "bitrate=%6.1fkbits/s", bitrate);
1510
1511     if (nb_frames_dup || nb_frames_drop)
1512         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1513                 nb_frames_dup, nb_frames_drop);
1514
1515     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1516
1517     fflush(stderr);
1518
1519     if (is_last_report) {
1520         int64_t raw= audio_size + video_size + extra_size;
1521         av_log(NULL, AV_LOG_INFO, "\n");
1522         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1523                video_size/1024.0,
1524                audio_size/1024.0,
1525                extra_size/1024.0,
1526                100.0*(total_size - raw)/raw
1527         );
1528     }
1529 }
1530
1531 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1532 {
1533     int fill_char = 0x00;
1534     if (sample_fmt == AV_SAMPLE_FMT_U8)
1535         fill_char = 0x80;
1536     memset(buf, fill_char, size);
1537 }
1538
1539 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1540 {
1541     int i, ret;
1542
1543     for (i = 0; i < nb_ostreams; i++) {
1544         OutputStream   *ost = &ost_table[i];
1545         AVCodecContext *enc = ost->st->codec;
1546         AVFormatContext *os = output_files[ost->file_index].ctx;
1547
1548         if (!ost->encoding_needed)
1549             continue;
1550
1551         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1552             continue;
1553         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1554             continue;
1555
1556         for(;;) {
1557             AVPacket pkt;
1558             int fifo_bytes;
1559             av_init_packet(&pkt);
1560             pkt.stream_index= ost->index;
1561
1562             switch (ost->st->codec->codec_type) {
1563             case AVMEDIA_TYPE_AUDIO:
1564                 fifo_bytes = av_fifo_size(ost->fifo);
1565                 ret = 0;
1566                 /* encode any samples remaining in fifo */
1567                 if (fifo_bytes > 0) {
1568                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1569                     int fs_tmp = enc->frame_size;
1570
1571                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1572                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1573                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1574                     } else { /* pad */
1575                         int frame_bytes = enc->frame_size*osize*enc->channels;
1576                         if (allocated_audio_buf_size < frame_bytes)
1577                             exit_program(1);
1578                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1579                     }
1580
1581                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1582                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1583                                               ost->st->time_base.num, enc->sample_rate);
1584                     enc->frame_size = fs_tmp;
1585                 }
1586                 if (ret <= 0) {
1587                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1588                 }
1589                 if (ret < 0) {
1590                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1591                     exit_program(1);
1592                 }
1593                 audio_size += ret;
1594                 pkt.flags |= AV_PKT_FLAG_KEY;
1595                 break;
1596             case AVMEDIA_TYPE_VIDEO:
1597                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1598                 if (ret < 0) {
1599                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1600                     exit_program(1);
1601                 }
1602                 video_size += ret;
1603                 if(enc->coded_frame && enc->coded_frame->key_frame)
1604                     pkt.flags |= AV_PKT_FLAG_KEY;
1605                 if (ost->logfile && enc->stats_out) {
1606                     fprintf(ost->logfile, "%s", enc->stats_out);
1607                 }
1608                 break;
1609             default:
1610                 ret=-1;
1611             }
1612
1613             if (ret <= 0)
1614                 break;
1615             pkt.data = bit_buffer;
1616             pkt.size = ret;
1617             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1618                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1619             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1620         }
1621     }
1622 }
1623
1624 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1625 static int output_packet(InputStream *ist, int ist_index,
1626                          OutputStream *ost_table, int nb_ostreams,
1627                          const AVPacket *pkt)
1628 {
1629     AVFormatContext *os;
1630     OutputStream *ost;
1631     int ret = 0, i;
1632     int got_output;
1633     void *buffer_to_free = NULL;
1634     static unsigned int samples_size= 0;
1635     AVSubtitle subtitle, *subtitle_to_free;
1636     int64_t pkt_dts = AV_NOPTS_VALUE;
1637     int64_t pkt_pts = AV_NOPTS_VALUE;
1638 #if CONFIG_AVFILTER
1639     int frame_available;
1640 #endif
1641     float quality = 0;
1642
1643     AVPacket avpkt;
1644     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1645
1646     if(ist->next_pts == AV_NOPTS_VALUE)
1647         ist->next_pts= ist->pts;
1648
1649     if (pkt == NULL) {
1650         /* EOF handling */
1651         av_init_packet(&avpkt);
1652         avpkt.data = NULL;
1653         avpkt.size = 0;
1654         goto handle_eof;
1655     } else {
1656         avpkt = *pkt;
1657     }
1658
1659     if(pkt->dts != AV_NOPTS_VALUE){
1660         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1661             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1662         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1663     }
1664     if(pkt->pts != AV_NOPTS_VALUE)
1665         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1666
1667     //while we have more to decode or while the decoder did output something on EOF
1668     while (avpkt.size > 0 || (!pkt && got_output)) {
1669         uint8_t *data_buf, *decoded_data_buf;
1670         int data_size, decoded_data_size;
1671         AVFrame *decoded_frame, *filtered_frame;
1672     handle_eof:
1673         ist->pts= ist->next_pts;
1674
1675         if(avpkt.size && avpkt.size != pkt->size)
1676             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1677                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1678             ist->showed_multi_packet_warning=1;
1679
1680         /* decode the packet if needed */
1681         decoded_frame    = filtered_frame = NULL;
1682         decoded_data_buf = NULL; /* fail safe */
1683         decoded_data_size= 0;
1684         data_buf  = avpkt.data;
1685         data_size = avpkt.size;
1686         subtitle_to_free = NULL;
1687         if (ist->decoding_needed) {
1688             switch(ist->st->codec->codec_type) {
1689             case AVMEDIA_TYPE_AUDIO:{
1690                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1691                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1692                     av_free(samples);
1693                     samples= av_malloc(samples_size);
1694                 }
1695                 decoded_data_size= samples_size;
1696                     /* XXX: could avoid copy if PCM 16 bits with same
1697                        endianness as CPU */
1698                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1699                                             &avpkt);
1700                 if (ret < 0)
1701                     return ret;
1702                 avpkt.data += ret;
1703                 avpkt.size -= ret;
1704                 data_size   = ret;
1705                 got_output  = decoded_data_size > 0;
1706                 /* Some bug in mpeg audio decoder gives */
1707                 /* decoded_data_size < 0, it seems they are overflows */
1708                 if (!got_output) {
1709                     /* no audio frame */
1710                     continue;
1711                 }
1712                 decoded_data_buf = (uint8_t *)samples;
1713                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1714                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1715                 break;}
1716             case AVMEDIA_TYPE_VIDEO:
1717                     if (!(decoded_frame = avcodec_alloc_frame()))
1718                         return AVERROR(ENOMEM);
1719                     avpkt.pts = pkt_pts;
1720                     avpkt.dts = pkt_dts;
1721                     pkt_pts = AV_NOPTS_VALUE;
1722                     if(pkt_dts != AV_NOPTS_VALUE && ist->st->codec->time_base.num != 0) {
1723                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1724                         pkt_dts += ((int64_t)AV_TIME_BASE *
1725                                           ist->st->codec->time_base.num * ticks) /
1726                             ist->st->codec->time_base.den;
1727                     }else
1728                         pkt_dts = AV_NOPTS_VALUE;
1729
1730                     ret = avcodec_decode_video2(ist->st->codec,
1731                                                 decoded_frame, &got_output, &avpkt);
1732                     quality = same_quant ? decoded_frame->quality : 0;
1733                     if (ret < 0)
1734                         goto fail;
1735                     if (!got_output) {
1736                         /* no picture yet */
1737                         av_freep(&decoded_frame);
1738                         goto discard_packet;
1739                     }
1740
1741                     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1742                         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1743
1744                     if (ist->st->codec->time_base.num != 0) {
1745                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1746                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1747                                           ist->st->codec->time_base.num * ticks) /
1748                             ist->st->codec->time_base.den;
1749                     }
1750                     avpkt.size = 0;
1751                     buffer_to_free = NULL;
1752                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1753                     break;
1754             case AVMEDIA_TYPE_SUBTITLE:
1755                 ret = avcodec_decode_subtitle2(ist->st->codec,
1756                                                &subtitle, &got_output, &avpkt);
1757                 if (ret < 0)
1758                     return ret;
1759                 if (!got_output) {
1760                     goto discard_packet;
1761                 }
1762                 subtitle_to_free = &subtitle;
1763                 avpkt.size = 0;
1764                 break;
1765             default:
1766                 return -1;
1767             }
1768         } else {
1769             switch(ist->st->codec->codec_type) {
1770             case AVMEDIA_TYPE_AUDIO:
1771                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1772                     ist->st->codec->sample_rate;
1773                 break;
1774             case AVMEDIA_TYPE_VIDEO:
1775                 if (ist->st->codec->time_base.num != 0) {
1776                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1777                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1778                                       ist->st->codec->time_base.num * ticks) /
1779                         ist->st->codec->time_base.den;
1780                 }
1781                 break;
1782             }
1783             avpkt.size = 0;
1784         }
1785
1786 #if CONFIG_AVFILTER
1787         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1788         for(i=0;i<nb_ostreams;i++) {
1789             OutputFile *of = &output_files[ost_table[i].file_index];
1790             if (of->start_time == 0 || ist->pts >= of->start_time) {
1791                 ost = &ost_table[i];
1792                 if (ost->input_video_filter && ost->source_index == ist_index) {
1793                     if (!decoded_frame->sample_aspect_ratio.num)
1794                         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1795                     decoded_frame->pts = ist->pts;
1796
1797                     av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1798                 }
1799             }
1800         }
1801 #endif
1802
1803         // preprocess audio (volume)
1804         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1805             if (audio_volume != 256) {
1806                 switch (ist->st->codec->sample_fmt) {
1807                 case AV_SAMPLE_FMT_U8:
1808                 {
1809                     uint8_t *volp = samples;
1810                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1811                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1812                         *volp++ = av_clip_uint8(v);
1813                     }
1814                     break;
1815                 }
1816                 case AV_SAMPLE_FMT_S16:
1817                 {
1818                     int16_t *volp = samples;
1819                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1820                         int v = ((*volp) * audio_volume + 128) >> 8;
1821                         *volp++ = av_clip_int16(v);
1822                     }
1823                     break;
1824                 }
1825                 case AV_SAMPLE_FMT_S32:
1826                 {
1827                     int32_t *volp = samples;
1828                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1829                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1830                         *volp++ = av_clipl_int32(v);
1831                     }
1832                     break;
1833                 }
1834                 case AV_SAMPLE_FMT_FLT:
1835                 {
1836                     float *volp = samples;
1837                     float scale = audio_volume / 256.f;
1838                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1839                         *volp++ *= scale;
1840                     }
1841                     break;
1842                 }
1843                 case AV_SAMPLE_FMT_DBL:
1844                 {
1845                     double *volp = samples;
1846                     double scale = audio_volume / 256.;
1847                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1848                         *volp++ *= scale;
1849                     }
1850                     break;
1851                 }
1852                 default:
1853                     av_log(NULL, AV_LOG_FATAL,
1854                            "Audio volume adjustment on sample format %s is not supported.\n",
1855                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1856                     exit_program(1);
1857                 }
1858             }
1859         }
1860
1861         /* frame rate emulation */
1862         if (input_files[ist->file_index].rate_emu) {
1863             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1864             int64_t now = av_gettime() - ist->start;
1865             if (pts > now)
1866                 usleep(pts - now);
1867         }
1868         /* if output time reached then transcode raw format,
1869            encode packets and output them */
1870         for (i = 0; i < nb_ostreams; i++) {
1871             OutputFile *of = &output_files[ost_table[i].file_index];
1872             int frame_size;
1873
1874             ost = &ost_table[i];
1875             if (ost->source_index != ist_index)
1876                 continue;
1877
1878             if (of->start_time && ist->pts < of->start_time)
1879                 continue;
1880
1881             if (of->recording_time != INT64_MAX &&
1882                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1883                               (AVRational){1, 1000000}) >= 0) {
1884                 ost->is_past_recording_time = 1;
1885                 continue;
1886             }
1887
1888 #if CONFIG_AVFILTER
1889             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1890                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1891             while (frame_available) {
1892                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1893                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1894                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1895                         goto cont;
1896                     if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1897                         ret = AVERROR(ENOMEM);
1898                         goto fail;
1899                     }
1900                     *filtered_frame= *decoded_frame; //for me_threshold
1901                     if (ost->picref) {
1902                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1903                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1904                     }
1905                 }
1906 #else
1907                 filtered_frame = decoded_frame;
1908 #endif
1909                 os = output_files[ost->file_index].ctx;
1910
1911                 /* set the input output pts pairs */
1912                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1913
1914                 if (ost->encoding_needed) {
1915                     av_assert0(ist->decoding_needed);
1916                     switch(ost->st->codec->codec_type) {
1917                     case AVMEDIA_TYPE_AUDIO:
1918                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1919                         break;
1920                     case AVMEDIA_TYPE_VIDEO:
1921 #if CONFIG_AVFILTER
1922                         if (ost->picref->video && !ost->frame_aspect_ratio)
1923                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1924 #endif
1925                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1926                                      same_quant ? quality : ost->st->codec->global_quality);
1927                         if (vstats_filename && frame_size)
1928                             do_video_stats(os, ost, frame_size);
1929                         break;
1930                     case AVMEDIA_TYPE_SUBTITLE:
1931                         do_subtitle_out(os, ost, ist, &subtitle,
1932                                         pkt->pts);
1933                         break;
1934                     default:
1935                         abort();
1936                     }
1937                 } else {
1938                     AVPicture pict;
1939                     AVPacket opkt;
1940                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1941                     av_init_packet(&opkt);
1942
1943                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1944                         !ost->copy_initial_nonkeyframes)
1945 #if !CONFIG_AVFILTER
1946                         continue;
1947 #else
1948                         goto cont;
1949 #endif
1950
1951                     /* no reencoding needed : output the packet directly */
1952                     /* force the input stream PTS */
1953
1954                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1955                         audio_size += data_size;
1956                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1957                         video_size += data_size;
1958                         ost->sync_opts++;
1959                     }
1960
1961                     opkt.stream_index= ost->index;
1962                     if(pkt->pts != AV_NOPTS_VALUE)
1963                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1964                     else
1965                         opkt.pts= AV_NOPTS_VALUE;
1966
1967                     if (pkt->dts == AV_NOPTS_VALUE)
1968                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1969                     else
1970                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1971                     opkt.dts -= ost_tb_start_time;
1972
1973                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1974                     opkt.flags= pkt->flags;
1975
1976                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1977                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1978                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1979                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1980                        ) {
1981                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1982                             opkt.destruct= av_destruct_packet;
1983                     } else {
1984                         opkt.data = data_buf;
1985                         opkt.size = data_size;
1986                     }
1987
1988                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1989                         /* store AVPicture in AVPacket, as expected by the output format */
1990                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1991                         opkt.data = (uint8_t *)&pict;
1992                         opkt.size = sizeof(AVPicture);
1993                         opkt.flags |= AV_PKT_FLAG_KEY;
1994                     }
1995                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1996                     ost->st->codec->frame_number++;
1997                     ost->frame_number++;
1998                     av_free_packet(&opkt);
1999                 }
2000 #if CONFIG_AVFILTER
2001                 cont:
2002                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
2003                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2004                 avfilter_unref_buffer(ost->picref);
2005             }
2006             av_freep(&filtered_frame);
2007 #endif
2008         }
2009
2010 fail:
2011         av_free(buffer_to_free);
2012         /* XXX: allocate the subtitles in the codec ? */
2013         if (subtitle_to_free) {
2014             avsubtitle_free(subtitle_to_free);
2015             subtitle_to_free = NULL;
2016         }
2017         av_freep(&decoded_frame);
2018         if (ret < 0)
2019             return ret;
2020     }
2021  discard_packet:
2022
2023     return 0;
2024 }
2025
2026 static void print_sdp(OutputFile *output_files, int n)
2027 {
2028     char sdp[2048];
2029     int i;
2030     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2031
2032     if (!avc)
2033         exit_program(1);
2034     for (i = 0; i < n; i++)
2035         avc[i] = output_files[i].ctx;
2036
2037     av_sdp_create(avc, n, sdp, sizeof(sdp));
2038     printf("SDP:\n%s\n", sdp);
2039     fflush(stdout);
2040     av_freep(&avc);
2041 }
2042
2043 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2044                              char *error, int error_len)
2045 {
2046     InputStream *ist = &input_streams[ist_index];
2047     if (ist->decoding_needed) {
2048         AVCodec *codec = ist->dec;
2049         if (!codec) {
2050             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2051                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2052             return AVERROR(EINVAL);
2053         }
2054         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2055             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2056                     ist->file_index, ist->st->index);
2057             return AVERROR(EINVAL);
2058         }
2059         assert_codec_experimental(ist->st->codec, 0);
2060         assert_avoptions(ist->opts);
2061     }
2062
2063     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;
2064     ist->next_pts = AV_NOPTS_VALUE;
2065     ist->is_start = 1;
2066
2067     return 0;
2068 }
2069
2070 static int transcode_init(OutputFile *output_files, int nb_output_files,
2071                           InputFile  *input_files,  int nb_input_files)
2072 {
2073     int ret = 0, i, j, k;
2074     AVFormatContext *oc;
2075     AVCodecContext *codec, *icodec;
2076     OutputStream *ost;
2077     InputStream *ist;
2078     char error[1024];
2079     int want_sdp = 1;
2080
2081     /* init framerate emulation */
2082     for (i = 0; i < nb_input_files; i++) {
2083         InputFile *ifile = &input_files[i];
2084         if (ifile->rate_emu)
2085             for (j = 0; j < ifile->nb_streams; j++)
2086                 input_streams[j + ifile->ist_index].start = av_gettime();
2087     }
2088
2089     /* output stream init */
2090     for (i = 0; i < nb_output_files; i++) {
2091         oc = output_files[i].ctx;
2092         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2093             av_dump_format(oc, i, oc->filename, 1);
2094             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2095             return AVERROR(EINVAL);
2096         }
2097     }
2098
2099     /* for each output stream, we compute the right encoding parameters */
2100     for (i = 0; i < nb_output_streams; i++) {
2101         ost = &output_streams[i];
2102         oc  = output_files[ost->file_index].ctx;
2103         ist = &input_streams[ost->source_index];
2104
2105         if (ost->attachment_filename)
2106             continue;
2107
2108         codec  = ost->st->codec;
2109         icodec = ist->st->codec;
2110
2111         ost->st->disposition          = ist->st->disposition;
2112         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2113         codec->chroma_sample_location = icodec->chroma_sample_location;
2114
2115         if (ost->stream_copy) {
2116             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2117
2118             if (extra_size > INT_MAX) {
2119                 return AVERROR(EINVAL);
2120             }
2121
2122             /* if stream_copy is selected, no need to decode or encode */
2123             codec->codec_id   = icodec->codec_id;
2124             codec->codec_type = icodec->codec_type;
2125
2126             if (!codec->codec_tag) {
2127                 if (!oc->oformat->codec_tag ||
2128                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2129                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2130                     codec->codec_tag = icodec->codec_tag;
2131             }
2132
2133             codec->bit_rate       = icodec->bit_rate;
2134             codec->rc_max_rate    = icodec->rc_max_rate;
2135             codec->rc_buffer_size = icodec->rc_buffer_size;
2136             codec->extradata      = av_mallocz(extra_size);
2137             if (!codec->extradata) {
2138                 return AVERROR(ENOMEM);
2139             }
2140             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2141             codec->extradata_size= icodec->extradata_size;
2142
2143             codec->time_base = ist->st->time_base;
2144             if(!strcmp(oc->oformat->name, "avi")) {
2145                 if (!copy_tb &&
2146                     av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) &&
2147                     av_q2d(ist->st->time_base) < 1.0/500){
2148                     codec->time_base = icodec->time_base;
2149                     codec->time_base.num *= icodec->ticks_per_frame;
2150                     codec->time_base.den *= 2;
2151                 }
2152             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
2153                 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){
2154                     codec->time_base = icodec->time_base;
2155                     codec->time_base.num *= icodec->ticks_per_frame;
2156                 }
2157             }
2158             av_reduce(&codec->time_base.num, &codec->time_base.den,
2159                         codec->time_base.num, codec->time_base.den, INT_MAX);
2160
2161             switch(codec->codec_type) {
2162             case AVMEDIA_TYPE_AUDIO:
2163                 if(audio_volume != 256) {
2164                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2165                     exit_program(1);
2166                 }
2167                 codec->channel_layout     = icodec->channel_layout;
2168                 codec->sample_rate        = icodec->sample_rate;
2169                 codec->channels           = icodec->channels;
2170                 codec->frame_size         = icodec->frame_size;
2171                 codec->audio_service_type = icodec->audio_service_type;
2172                 codec->block_align        = icodec->block_align;
2173                 break;
2174             case AVMEDIA_TYPE_VIDEO:
2175                 codec->pix_fmt            = icodec->pix_fmt;
2176                 codec->width              = icodec->width;
2177                 codec->height             = icodec->height;
2178                 codec->has_b_frames       = icodec->has_b_frames;
2179                 if (!codec->sample_aspect_ratio.num) {
2180                     codec->sample_aspect_ratio   =
2181                     ost->st->sample_aspect_ratio =
2182                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2183                         ist->st->codec->sample_aspect_ratio.num ?
2184                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2185                 }
2186                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2187                 break;
2188             case AVMEDIA_TYPE_SUBTITLE:
2189                 codec->width  = icodec->width;
2190                 codec->height = icodec->height;
2191                 break;
2192             case AVMEDIA_TYPE_DATA:
2193             case AVMEDIA_TYPE_ATTACHMENT:
2194                 break;
2195             default:
2196                 abort();
2197             }
2198         } else {
2199             if (!ost->enc)
2200                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2201
2202             ist->decoding_needed = 1;
2203             ost->encoding_needed = 1;
2204
2205             switch(codec->codec_type) {
2206             case AVMEDIA_TYPE_AUDIO:
2207                 ost->fifo = av_fifo_alloc(1024);
2208                 if (!ost->fifo) {
2209                     return AVERROR(ENOMEM);
2210                 }
2211                 if (!codec->sample_rate)
2212                     codec->sample_rate = icodec->sample_rate;
2213                 choose_sample_rate(ost->st, ost->enc);
2214                 codec->time_base = (AVRational){1, codec->sample_rate};
2215
2216                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2217                     codec->sample_fmt = icodec->sample_fmt;
2218                 choose_sample_fmt(ost->st, ost->enc);
2219
2220                 if (ost->audio_channels_mapped) {
2221                     /* the requested output channel is set to the number of
2222                      * -map_channel only if no -ac are specified */
2223                     if (!codec->channels) {
2224                         codec->channels       = ost->audio_channels_mapped;
2225                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2226                         if (!codec->channel_layout) {
2227                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2228                             exit_program(1);
2229                         }
2230                     }
2231                     /* fill unused channel mapping with -1 (which means a muted
2232                      * channel in case the number of output channels is bigger
2233                      * than the number of mapped channel) */
2234                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2235                         ost->audio_channels_map[j] = -1;
2236                 } else if (!codec->channels) {
2237                     codec->channels = icodec->channels;
2238                     codec->channel_layout = icodec->channel_layout;
2239                 }
2240                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2241                     codec->channel_layout = 0;
2242
2243                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2244                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2245                                             || codec->channel_layout != icodec->channel_layout;
2246                 icodec->request_channels  = codec->channels;
2247                 ost->resample_sample_fmt  = icodec->sample_fmt;
2248                 ost->resample_sample_rate = icodec->sample_rate;
2249                 ost->resample_channels    = icodec->channels;
2250                 break;
2251             case AVMEDIA_TYPE_VIDEO:
2252                 if (codec->pix_fmt == PIX_FMT_NONE)
2253                     codec->pix_fmt = icodec->pix_fmt;
2254                 choose_pixel_fmt(ost->st, ost->enc);
2255
2256                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2257                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2258                     exit_program(1);
2259                 }
2260
2261                 if (!codec->width || !codec->height) {
2262                     codec->width  = icodec->width;
2263                     codec->height = icodec->height;
2264                 }
2265
2266                 ost->video_resample = codec->width   != icodec->width  ||
2267                                       codec->height  != icodec->height ||
2268                                       codec->pix_fmt != icodec->pix_fmt;
2269                 if (ost->video_resample) {
2270                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2271                 }
2272
2273                 ost->resample_height  = icodec->height;
2274                 ost->resample_width   = icodec->width;
2275                 ost->resample_pix_fmt = icodec->pix_fmt;
2276
2277                 if (!ost->frame_rate.num)
2278                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2279                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2280                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2281                     ost->frame_rate = ost->enc->supported_framerates[idx];
2282                 }
2283                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2284                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2285                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2286                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2287                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2288                 }
2289                 for (j = 0; j < ost->forced_kf_count; j++)
2290                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2291                                                          AV_TIME_BASE_Q,
2292                                                          codec->time_base);
2293
2294 #if CONFIG_AVFILTER
2295                 if (configure_video_filters(ist, ost)) {
2296                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2297                     exit(1);
2298                 }
2299 #endif
2300                 break;
2301             case AVMEDIA_TYPE_SUBTITLE:
2302                 break;
2303             default:
2304                 abort();
2305                 break;
2306             }
2307             /* two pass mode */
2308             if (codec->codec_id != CODEC_ID_H264 &&
2309                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2310                 char logfilename[1024];
2311                 FILE *f;
2312
2313                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2314                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2315                          i);
2316                 if (codec->flags & CODEC_FLAG_PASS2) {
2317                     char  *logbuffer;
2318                     size_t logbuffer_size;
2319                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2320                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2321                                logfilename);
2322                         exit_program(1);
2323                     }
2324                     codec->stats_in = logbuffer;
2325                 }
2326                 if (codec->flags & CODEC_FLAG_PASS1) {
2327                     f = fopen(logfilename, "wb");
2328                     if (!f) {
2329                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2330                                logfilename, strerror(errno));
2331                         exit_program(1);
2332                     }
2333                     ost->logfile = f;
2334                 }
2335             }
2336         }
2337         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2338             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2339             int size        = codec->width * codec->height;
2340             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2341         }
2342     }
2343
2344     if (!bit_buffer)
2345         bit_buffer = av_malloc(bit_buffer_size);
2346     if (!bit_buffer) {
2347         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2348                bit_buffer_size);
2349         return AVERROR(ENOMEM);
2350     }
2351
2352     /* open each encoder */
2353     for (i = 0; i < nb_output_streams; i++) {
2354         ost = &output_streams[i];
2355         if (ost->encoding_needed) {
2356             AVCodec      *codec = ost->enc;
2357             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2358             if (!codec) {
2359                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2360                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2361                 ret = AVERROR(EINVAL);
2362                 goto dump_format;
2363             }
2364             if (dec->subtitle_header) {
2365                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2366                 if (!ost->st->codec->subtitle_header) {
2367                     ret = AVERROR(ENOMEM);
2368                     goto dump_format;
2369                 }
2370                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2371                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2372             }
2373             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2374                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2375                         ost->file_index, ost->index);
2376                 ret = AVERROR(EINVAL);
2377                 goto dump_format;
2378             }
2379             assert_codec_experimental(ost->st->codec, 1);
2380             assert_avoptions(ost->opts);
2381             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2382                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2383                                              " It takes bits/s as argument, not kbits/s\n");
2384             extra_size += ost->st->codec->extradata_size;
2385
2386             if (ost->st->codec->me_threshold)
2387                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2388         }
2389     }
2390
2391     /* init input streams */
2392     for (i = 0; i < nb_input_streams; i++)
2393         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2394             goto dump_format;
2395
2396     /* discard unused programs */
2397     for (i = 0; i < nb_input_files; i++) {
2398         InputFile *ifile = &input_files[i];
2399         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2400             AVProgram *p = ifile->ctx->programs[j];
2401             int discard  = AVDISCARD_ALL;
2402
2403             for (k = 0; k < p->nb_stream_indexes; k++)
2404                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2405                     discard = AVDISCARD_DEFAULT;
2406                     break;
2407                 }
2408             p->discard = discard;
2409         }
2410     }
2411
2412     /* open files and write file headers */
2413     for (i = 0; i < nb_output_files; i++) {
2414         oc = output_files[i].ctx;
2415         oc->interrupt_callback = int_cb;
2416         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2417             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2418             ret = AVERROR(EINVAL);
2419             goto dump_format;
2420         }
2421 //        assert_avoptions(output_files[i].opts);
2422         if (strcmp(oc->oformat->name, "rtp")) {
2423             want_sdp = 0;
2424         }
2425     }
2426
2427  dump_format:
2428     /* dump the file output parameters - cannot be done before in case
2429        of stream copy */
2430     for (i = 0; i < nb_output_files; i++) {
2431         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2432     }
2433
2434     /* dump the stream mapping */
2435     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2436     for (i = 0; i < nb_output_streams; i++) {
2437         ost = &output_streams[i];
2438
2439         if (ost->attachment_filename) {
2440             /* an attached file */
2441             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2442                    ost->attachment_filename, ost->file_index, ost->index);
2443             continue;
2444         }
2445         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2446                input_streams[ost->source_index].file_index,
2447                input_streams[ost->source_index].st->index,
2448                ost->file_index,
2449                ost->index);
2450         if (ost->audio_channels_mapped) {
2451             av_log(NULL, AV_LOG_INFO, " [ch:");
2452             for (j = 0; j < ost->audio_channels_mapped; j++)
2453                 if (ost->audio_channels_map[j] == -1)
2454                     av_log(NULL, AV_LOG_INFO, " M");
2455                 else
2456                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2457             av_log(NULL, AV_LOG_INFO, "]");
2458         }
2459         if (ost->sync_ist != &input_streams[ost->source_index])
2460             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2461                    ost->sync_ist->file_index,
2462                    ost->sync_ist->st->index);
2463         if (ost->stream_copy)
2464             av_log(NULL, AV_LOG_INFO, " (copy)");
2465         else
2466             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2467                    input_streams[ost->source_index].dec->name : "?",
2468                    ost->enc ? ost->enc->name : "?");
2469         av_log(NULL, AV_LOG_INFO, "\n");
2470     }
2471
2472     if (ret) {
2473         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2474         return ret;
2475     }
2476
2477     if (want_sdp) {
2478         print_sdp(output_files, nb_output_files);
2479     }
2480
2481     return 0;
2482 }
2483
2484 /*
2485  * The following code is the main loop of the file converter
2486  */
2487 static int transcode(OutputFile *output_files, int nb_output_files,
2488                      InputFile  *input_files,  int nb_input_files)
2489 {
2490     int ret, i;
2491     AVFormatContext *is, *os;
2492     OutputStream *ost;
2493     InputStream *ist;
2494     uint8_t *no_packet;
2495     int no_packet_count=0;
2496     int64_t timer_start;
2497     int key;
2498
2499     if (!(no_packet = av_mallocz(nb_input_files)))
2500         exit_program(1);
2501
2502     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2503     if (ret < 0)
2504         goto fail;
2505
2506     if (!using_stdin) {
2507         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2508     }
2509
2510     timer_start = av_gettime();
2511
2512     for(; received_sigterm == 0;) {
2513         int file_index, ist_index;
2514         AVPacket pkt;
2515         int64_t ipts_min;
2516         double opts_min;
2517         int64_t cur_time= av_gettime();
2518
2519         ipts_min= INT64_MAX;
2520         opts_min= 1e100;
2521         /* if 'q' pressed, exits */
2522         if (!using_stdin) {
2523             static int64_t last_time;
2524             if (received_nb_signals)
2525                 break;
2526             /* read_key() returns 0 on EOF */
2527             if(cur_time - last_time >= 100000 && !run_as_daemon){
2528                 key =  read_key();
2529                 last_time = cur_time;
2530             }else
2531                 key = -1;
2532             if (key == 'q')
2533                 break;
2534             if (key == '+') av_log_set_level(av_log_get_level()+10);
2535             if (key == '-') av_log_set_level(av_log_get_level()-10);
2536             if (key == 's') qp_hist     ^= 1;
2537             if (key == 'h'){
2538                 if (do_hex_dump){
2539                     do_hex_dump = do_pkt_dump = 0;
2540                 } else if(do_pkt_dump){
2541                     do_hex_dump = 1;
2542                 } else
2543                     do_pkt_dump = 1;
2544                 av_log_set_level(AV_LOG_DEBUG);
2545             }
2546 #if CONFIG_AVFILTER
2547             if (key == 'c' || key == 'C'){
2548                 char buf[4096], target[64], command[256], arg[256] = {0};
2549                 double time;
2550                 int k, n = 0;
2551                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2552                 i = 0;
2553                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2554                     if (k > 0)
2555                         buf[i++] = k;
2556                 buf[i] = 0;
2557                 if (k > 0 &&
2558                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2559                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2560                            target, time, command, arg);
2561                     for (i = 0; i < nb_output_streams; i++) {
2562                         ost = &output_streams[i];
2563                         if (ost->graph) {
2564                             if (time < 0) {
2565                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2566                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2567                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2568                             } else {
2569                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2570                             }
2571                         }
2572                     }
2573                 } else {
2574                     av_log(NULL, AV_LOG_ERROR,
2575                            "Parse error, at least 3 arguments were expected, "
2576                            "only %d given in string '%s'\n", n, buf);
2577                 }
2578             }
2579 #endif
2580             if (key == 'd' || key == 'D'){
2581                 int debug=0;
2582                 if(key == 'D') {
2583                     debug = input_streams[0].st->codec->debug<<1;
2584                     if(!debug) debug = 1;
2585                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2586                         debug += debug;
2587                 }else
2588                     if(scanf("%d", &debug)!=1)
2589                         fprintf(stderr,"error parsing debug value\n");
2590                 for(i=0;i<nb_input_streams;i++) {
2591                     input_streams[i].st->codec->debug = debug;
2592                 }
2593                 for(i=0;i<nb_output_streams;i++) {
2594                     ost = &output_streams[i];
2595                     ost->st->codec->debug = debug;
2596                 }
2597                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2598                 fprintf(stderr,"debug=%d\n", debug);
2599             }
2600             if (key == '?'){
2601                 fprintf(stderr, "key    function\n"
2602                                 "?      show this help\n"
2603                                 "+      increase verbosity\n"
2604                                 "-      decrease verbosity\n"
2605                                 "c      Send command to filtergraph\n"
2606                                 "D      cycle through available debug modes\n"
2607                                 "h      dump packets/hex press to cycle through the 3 states\n"
2608                                 "q      quit\n"
2609                                 "s      Show QP histogram\n"
2610                 );
2611             }
2612         }
2613
2614         /* select the stream that we must read now by looking at the
2615            smallest output pts */
2616         file_index = -1;
2617         for (i = 0; i < nb_output_streams; i++) {
2618             OutputFile *of;
2619             int64_t ipts;
2620             double  opts;
2621             ost = &output_streams[i];
2622             of = &output_files[ost->file_index];
2623             os = output_files[ost->file_index].ctx;
2624             ist = &input_streams[ost->source_index];
2625             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2626                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2627                 continue;
2628             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2629             ipts = ist->pts;
2630             if (!input_files[ist->file_index].eof_reached){
2631                 if(ipts < ipts_min) {
2632                     ipts_min = ipts;
2633                     if(input_sync ) file_index = ist->file_index;
2634                 }
2635                 if(opts < opts_min) {
2636                     opts_min = opts;
2637                     if(!input_sync) file_index = ist->file_index;
2638                 }
2639             }
2640             if (ost->frame_number >= ost->max_frames) {
2641                 int j;
2642                 for (j = 0; j < of->ctx->nb_streams; j++)
2643                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2644                 continue;
2645             }
2646         }
2647         /* if none, if is finished */
2648         if (file_index < 0) {
2649             if(no_packet_count){
2650                 no_packet_count=0;
2651                 memset(no_packet, 0, nb_input_files);
2652                 usleep(10000);
2653                 continue;
2654             }
2655             break;
2656         }
2657
2658         /* read a frame from it and output it in the fifo */
2659         is = input_files[file_index].ctx;
2660         ret= av_read_frame(is, &pkt);
2661         if(ret == AVERROR(EAGAIN)){
2662             no_packet[file_index]=1;
2663             no_packet_count++;
2664             continue;
2665         }
2666         if (ret < 0) {
2667             input_files[file_index].eof_reached = 1;
2668             if (opt_shortest)
2669                 break;
2670             else
2671                 continue;
2672         }
2673
2674         no_packet_count=0;
2675         memset(no_packet, 0, nb_input_files);
2676
2677         if (do_pkt_dump) {
2678             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2679                              is->streams[pkt.stream_index]);
2680         }
2681         /* the following test is needed in case new streams appear
2682            dynamically in stream : we ignore them */
2683         if (pkt.stream_index >= input_files[file_index].nb_streams)
2684             goto discard_packet;
2685         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2686         ist = &input_streams[ist_index];
2687         if (ist->discard)
2688             goto discard_packet;
2689
2690         if (pkt.dts != AV_NOPTS_VALUE)
2691             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2692         if (pkt.pts != AV_NOPTS_VALUE)
2693             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2694
2695         if(pkt.pts != AV_NOPTS_VALUE)
2696             pkt.pts *= ist->ts_scale;
2697         if(pkt.dts != AV_NOPTS_VALUE)
2698             pkt.dts *= ist->ts_scale;
2699
2700 //        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);
2701         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2702             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2703             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2704             int64_t delta= pkt_dts - ist->next_pts;
2705             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2706                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2707                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2708                 pkt_dts+1<ist->pts)&& !copy_ts){
2709                 input_files[ist->file_index].ts_offset -= delta;
2710                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2711                        delta, input_files[ist->file_index].ts_offset);
2712                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2713                 if(pkt.pts != AV_NOPTS_VALUE)
2714                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2715             }
2716         }
2717
2718         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2719         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2720
2721             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2722                    ist->file_index, ist->st->index);
2723             if (exit_on_error)
2724                 exit_program(1);
2725             av_free_packet(&pkt);
2726             continue;
2727         }
2728
2729     discard_packet:
2730         av_free_packet(&pkt);
2731
2732         /* dump report by using the output first video and audio streams */
2733         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2734     }
2735
2736     /* at the end of stream, we must flush the decoder buffers */
2737     for (i = 0; i < nb_input_streams; i++) {
2738         ist = &input_streams[i];
2739         if (ist->decoding_needed) {
2740             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2741         }
2742     }
2743     flush_encoders(output_streams, nb_output_streams);
2744
2745     term_exit();
2746
2747     /* write the trailer if needed and close file */
2748     for(i=0;i<nb_output_files;i++) {
2749         os = output_files[i].ctx;
2750         av_write_trailer(os);
2751     }
2752
2753     /* dump report by using the first video and audio streams */
2754     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2755
2756     /* close each encoder */
2757     for (i = 0; i < nb_output_streams; i++) {
2758         ost = &output_streams[i];
2759         if (ost->encoding_needed) {
2760             av_freep(&ost->st->codec->stats_in);
2761             avcodec_close(ost->st->codec);
2762         }
2763 #if CONFIG_AVFILTER
2764         avfilter_graph_free(&ost->graph);
2765 #endif
2766     }
2767
2768     /* close each decoder */
2769     for (i = 0; i < nb_input_streams; i++) {
2770         ist = &input_streams[i];
2771         if (ist->decoding_needed) {
2772             avcodec_close(ist->st->codec);
2773         }
2774     }
2775
2776     /* finished ! */
2777     ret = 0;
2778
2779  fail:
2780     av_freep(&bit_buffer);
2781     av_freep(&no_packet);
2782
2783     if (output_streams) {
2784         for (i = 0; i < nb_output_streams; i++) {
2785             ost = &output_streams[i];
2786             if (ost) {
2787                 if (ost->stream_copy)
2788                     av_freep(&ost->st->codec->extradata);
2789                 if (ost->logfile) {
2790                     fclose(ost->logfile);
2791                     ost->logfile = NULL;
2792                 }
2793                 av_fifo_free(ost->fifo); /* works even if fifo is not
2794                                              initialized but set to zero */
2795                 av_freep(&ost->st->codec->subtitle_header);
2796                 av_free(ost->resample_frame.data[0]);
2797                 av_free(ost->forced_kf_pts);
2798                 if (ost->video_resample)
2799                     sws_freeContext(ost->img_resample_ctx);
2800                 swr_free(&ost->swr);
2801                 av_dict_free(&ost->opts);
2802             }
2803         }
2804     }
2805     return ret;
2806 }
2807
2808 static int opt_frame_crop(const char *opt, const char *arg)
2809 {
2810     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2811     return AVERROR(EINVAL);
2812 }
2813
2814 static int opt_pad(const char *opt, const char *arg)
2815 {
2816     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2817     return -1;
2818 }
2819
2820 static double parse_frame_aspect_ratio(const char *arg)
2821 {
2822     int x = 0, y = 0;
2823     double ar = 0;
2824     const char *p;
2825     char *end;
2826
2827     p = strchr(arg, ':');
2828     if (p) {
2829         x = strtol(arg, &end, 10);
2830         if (end == p)
2831             y = strtol(end+1, &end, 10);
2832         if (x > 0 && y > 0)
2833             ar = (double)x / (double)y;
2834     } else
2835         ar = strtod(arg, NULL);
2836
2837     if (!ar) {
2838         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2839         exit_program(1);
2840     }
2841     return ar;
2842 }
2843
2844 static int opt_video_channel(const char *opt, const char *arg)
2845 {
2846     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2847     return opt_default("channel", arg);
2848 }
2849
2850 static int opt_video_standard(const char *opt, const char *arg)
2851 {
2852     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2853     return opt_default("standard", arg);
2854 }
2855
2856 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2857 {
2858     audio_codec_name = arg;
2859     return parse_option(o, "codec:a", arg, options);
2860 }
2861
2862 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2863 {
2864     video_codec_name = arg;
2865     return parse_option(o, "codec:v", arg, options);
2866 }
2867
2868 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2869 {
2870     subtitle_codec_name = arg;
2871     return parse_option(o, "codec:s", arg, options);
2872 }
2873
2874 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2875 {
2876     return parse_option(o, "codec:d", arg, options);
2877 }
2878
2879 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2880 {
2881     StreamMap *m = NULL;
2882     int i, negative = 0, file_idx;
2883     int sync_file_idx = -1, sync_stream_idx;
2884     char *p, *sync;
2885     char *map;
2886
2887     if (*arg == '-') {
2888         negative = 1;
2889         arg++;
2890     }
2891     map = av_strdup(arg);
2892
2893     /* parse sync stream first, just pick first matching stream */
2894     if (sync = strchr(map, ',')) {
2895         *sync = 0;
2896         sync_file_idx = strtol(sync + 1, &sync, 0);
2897         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2898             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2899             exit_program(1);
2900         }
2901         if (*sync)
2902             sync++;
2903         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2904             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2905                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2906                 sync_stream_idx = i;
2907                 break;
2908             }
2909         if (i == input_files[sync_file_idx].nb_streams) {
2910             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2911                                        "match any streams.\n", arg);
2912             exit_program(1);
2913         }
2914     }
2915
2916
2917     file_idx = strtol(map, &p, 0);
2918     if (file_idx >= nb_input_files || file_idx < 0) {
2919         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2920         exit_program(1);
2921     }
2922     if (negative)
2923         /* disable some already defined maps */
2924         for (i = 0; i < o->nb_stream_maps; i++) {
2925             m = &o->stream_maps[i];
2926             if (file_idx == m->file_index &&
2927                 check_stream_specifier(input_files[m->file_index].ctx,
2928                                        input_files[m->file_index].ctx->streams[m->stream_index],
2929                                        *p == ':' ? p + 1 : p) > 0)
2930                 m->disabled = 1;
2931         }
2932     else
2933         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2934             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2935                         *p == ':' ? p + 1 : p) <= 0)
2936                 continue;
2937             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2938                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2939             m = &o->stream_maps[o->nb_stream_maps - 1];
2940
2941             m->file_index   = file_idx;
2942             m->stream_index = i;
2943
2944             if (sync_file_idx >= 0) {
2945                 m->sync_file_index   = sync_file_idx;
2946                 m->sync_stream_index = sync_stream_idx;
2947             } else {
2948                 m->sync_file_index   = file_idx;
2949                 m->sync_stream_index = i;
2950             }
2951         }
2952
2953     if (!m) {
2954         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2955         exit_program(1);
2956     }
2957
2958     av_freep(&map);
2959     return 0;
2960 }
2961
2962 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2963 {
2964     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2965                                 &o->nb_attachments, o->nb_attachments + 1);
2966     o->attachments[o->nb_attachments - 1] = arg;
2967     return 0;
2968 }
2969
2970 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
2971 {
2972     int n;
2973     AVStream *st;
2974     AudioChannelMap *m;
2975
2976     o->audio_channel_maps =
2977         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
2978                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
2979     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
2980
2981     /* muted channel syntax */
2982     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
2983     if ((n == 1 || n == 3) && m->channel_idx == -1) {
2984         m->file_idx = m->stream_idx = -1;
2985         if (n == 1)
2986             m->ofile_idx = m->ostream_idx = -1;
2987         return 0;
2988     }
2989
2990     /* normal syntax */
2991     n = sscanf(arg, "%d.%d.%d:%d.%d",
2992                &m->file_idx,  &m->stream_idx, &m->channel_idx,
2993                &m->ofile_idx, &m->ostream_idx);
2994
2995     if (n != 3 && n != 5) {
2996         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
2997                "[file.stream.channel|-1][:syncfile:syncstream]\n");
2998         exit_program(1);
2999     }
3000
3001     if (n != 5) // only file.stream.channel specified
3002         m->ofile_idx = m->ostream_idx = -1;
3003
3004     /* check input */
3005     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3006         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3007                m->file_idx);
3008         exit_program(1);
3009     }
3010     if (m->stream_idx < 0 ||
3011         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3012         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3013                m->file_idx, m->stream_idx);
3014         exit_program(1);
3015     }
3016     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3017     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3018         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3019                m->file_idx, m->stream_idx);
3020         exit_program(1);
3021     }
3022     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3023         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3024                m->file_idx, m->stream_idx, m->channel_idx);
3025         exit_program(1);
3026     }
3027     return 0;
3028 }
3029
3030 static void parse_meta_type(char *arg, char *type, int *index)
3031 {
3032     if (*arg) {
3033         *type = *arg;
3034         switch (*arg) {
3035         case 'g':
3036             break;
3037         case 's':
3038         case 'c':
3039         case 'p':
3040             if (*(++arg) == ':')
3041                 *index = strtol(++arg, NULL, 0);
3042             break;
3043         default:
3044             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3045             exit_program(1);
3046         }
3047     } else
3048         *type = 'g';
3049 }
3050
3051 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3052 {
3053     MetadataMap *m, *m1;
3054     char *p;
3055
3056     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3057                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3058
3059     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3060     m->file = strtol(arg, &p, 0);
3061     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3062
3063     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3064     if (p = strchr(opt, ':'))
3065         parse_meta_type(p + 1, &m1->type, &m1->index);
3066     else
3067         m1->type = 'g';
3068
3069     if (m->type == 'g' || m1->type == 'g')
3070         o->metadata_global_manual = 1;
3071     if (m->type == 's' || m1->type == 's')
3072         o->metadata_streams_manual = 1;
3073     if (m->type == 'c' || m1->type == 'c')
3074         o->metadata_chapters_manual = 1;
3075
3076     return 0;
3077 }
3078
3079 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3080 {
3081     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3082                     "Use -map_metadata instead.\n");
3083     return opt_map_metadata(o, opt, arg);
3084 }
3085
3086 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3087 {
3088     char buf[128];
3089     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3090     struct tm time = *gmtime((time_t*)&recording_timestamp);
3091     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3092     parse_option(o, "metadata", buf, options);
3093
3094     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3095                                  "tag instead.\n", opt);
3096     return 0;
3097 }
3098
3099 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3100 {
3101     const char *codec_string = encoder ? "encoder" : "decoder";
3102     AVCodec *codec;
3103
3104     codec = encoder ?
3105         avcodec_find_encoder_by_name(name) :
3106         avcodec_find_decoder_by_name(name);
3107     if(!codec) {
3108         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3109         exit_program(1);
3110     }
3111     if(codec->type != type) {
3112         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3113         exit_program(1);
3114     }
3115     return codec;
3116 }
3117
3118 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3119 {
3120     char *codec_name = NULL;
3121
3122     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3123     if (codec_name) {
3124         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3125         st->codec->codec_id = codec->id;
3126         return codec;
3127     } else
3128         return avcodec_find_decoder(st->codec->codec_id);
3129 }
3130
3131 /**
3132  * Add all the streams from the given input file to the global
3133  * list of input streams.
3134  */
3135 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3136 {
3137     int i, rfps, rfps_base;
3138     char *next, *codec_tag = NULL;
3139
3140     for (i = 0; i < ic->nb_streams; i++) {
3141         AVStream *st = ic->streams[i];
3142         AVCodecContext *dec = st->codec;
3143         InputStream *ist;
3144
3145         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3146         ist = &input_streams[nb_input_streams - 1];
3147         ist->st = st;
3148         ist->file_index = nb_input_files;
3149         ist->discard = 1;
3150         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3151
3152         ist->ts_scale = 1.0;
3153         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3154
3155         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3156         if (codec_tag) {
3157             uint32_t tag = strtol(codec_tag, &next, 0);
3158             if (*next)
3159                 tag = AV_RL32(codec_tag);
3160             st->codec->codec_tag = tag;
3161         }
3162
3163         ist->dec = choose_decoder(o, ic, st);
3164
3165         switch (dec->codec_type) {
3166         case AVMEDIA_TYPE_AUDIO:
3167             if(!ist->dec)
3168                 ist->dec = avcodec_find_decoder(dec->codec_id);
3169             if(o->audio_disable)
3170                 st->discard= AVDISCARD_ALL;
3171             break;
3172         case AVMEDIA_TYPE_VIDEO:
3173             if(!ist->dec)
3174                 ist->dec = avcodec_find_decoder(dec->codec_id);
3175             rfps      = ic->streams[i]->r_frame_rate.num;
3176             rfps_base = ic->streams[i]->r_frame_rate.den;
3177             if (dec->lowres) {
3178                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3179             }
3180
3181             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3182
3183                 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",
3184                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3185                        (float)rfps / rfps_base, rfps, rfps_base);
3186             }
3187
3188             if (o->video_disable)
3189                 st->discard= AVDISCARD_ALL;
3190             else if(video_discard)
3191                 st->discard= video_discard;
3192             break;
3193         case AVMEDIA_TYPE_DATA:
3194             break;
3195         case AVMEDIA_TYPE_SUBTITLE:
3196             if(!ist->dec)
3197                 ist->dec = avcodec_find_decoder(dec->codec_id);
3198             if(o->subtitle_disable)
3199                 st->discard = AVDISCARD_ALL;
3200             break;
3201         case AVMEDIA_TYPE_ATTACHMENT:
3202         case AVMEDIA_TYPE_UNKNOWN:
3203             break;
3204         default:
3205             abort();
3206         }
3207     }
3208 }
3209
3210 static void assert_file_overwrite(const char *filename)
3211 {
3212     if (!file_overwrite &&
3213         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3214          av_strstart(filename, "file:", NULL))) {
3215         if (avio_check(filename, 0) == 0) {
3216             if (!using_stdin) {
3217                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3218                 fflush(stderr);
3219                 term_exit();
3220                 if (!read_yesno()) {
3221                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3222                     exit_program(1);
3223                 }
3224                 term_init();
3225             }
3226             else {
3227                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3228                 exit_program(1);
3229             }
3230         }
3231     }
3232 }
3233
3234 static void dump_attachment(AVStream *st, const char *filename)
3235 {
3236     int ret;
3237     AVIOContext *out = NULL;
3238     AVDictionaryEntry *e;
3239
3240     if (!st->codec->extradata_size) {
3241         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3242                nb_input_files - 1, st->index);
3243         return;
3244     }
3245     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3246         filename = e->value;
3247     if (!*filename) {
3248         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3249                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3250         exit_program(1);
3251     }
3252
3253     assert_file_overwrite(filename);
3254
3255     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3256         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3257                filename);
3258         exit_program(1);
3259     }
3260
3261     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3262     avio_flush(out);
3263     avio_close(out);
3264 }
3265
3266 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3267 {
3268     AVFormatContext *ic;
3269     AVInputFormat *file_iformat = NULL;
3270     int err, i, ret;
3271     int64_t timestamp;
3272     uint8_t buf[128];
3273     AVDictionary **opts;
3274     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3275
3276     if (o->format) {
3277         if (!(file_iformat = av_find_input_format(o->format))) {
3278             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3279             exit_program(1);
3280         }
3281     }
3282
3283     if (!strcmp(filename, "-"))
3284         filename = "pipe:";
3285
3286     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3287                     !strcmp(filename, "/dev/stdin");
3288
3289     /* get default parameters from command line */
3290     ic = avformat_alloc_context();
3291     if (!ic) {
3292         print_error(filename, AVERROR(ENOMEM));
3293         exit_program(1);
3294     }
3295     if (o->nb_audio_sample_rate) {
3296         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3297         av_dict_set(&format_opts, "sample_rate", buf, 0);
3298     }
3299     if (o->nb_audio_channels) {
3300         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3301         av_dict_set(&format_opts, "channels", buf, 0);
3302     }
3303     if (o->nb_frame_rates) {
3304         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3305     }
3306     if (o->nb_frame_sizes) {
3307         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3308     }
3309     if (o->nb_frame_pix_fmts)
3310         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3311
3312     ic->video_codec_id   = video_codec_name ?
3313         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3314     ic->audio_codec_id   = audio_codec_name ?
3315         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3316     ic->subtitle_codec_id= subtitle_codec_name ?
3317         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3318     ic->flags |= AVFMT_FLAG_NONBLOCK;
3319     ic->interrupt_callback = int_cb;
3320
3321     if (loop_input) {
3322         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3323         ic->loop_input = loop_input;
3324     }
3325
3326     /* open the input file with generic libav function */
3327     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3328     if (err < 0) {
3329         print_error(filename, err);
3330         exit_program(1);
3331     }
3332     assert_avoptions(format_opts);
3333
3334     /* apply forced codec ids */
3335     for (i = 0; i < ic->nb_streams; i++)
3336         choose_decoder(o, ic, ic->streams[i]);
3337
3338     /* Set AVCodecContext options for avformat_find_stream_info */
3339     opts = setup_find_stream_info_opts(ic, codec_opts);
3340     orig_nb_streams = ic->nb_streams;
3341
3342     /* If not enough info to get the stream parameters, we decode the
3343        first frames to get it. (used in mpeg case for example) */
3344     ret = avformat_find_stream_info(ic, opts);
3345     if (ret < 0) {
3346         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3347         av_close_input_file(ic);
3348         exit_program(1);
3349     }
3350
3351     timestamp = o->start_time;
3352     /* add the stream start time */
3353     if (ic->start_time != AV_NOPTS_VALUE)
3354         timestamp += ic->start_time;
3355
3356     /* if seeking requested, we execute it */
3357     if (o->start_time != 0) {
3358         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3359         if (ret < 0) {
3360             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3361                    filename, (double)timestamp / AV_TIME_BASE);
3362         }
3363     }
3364
3365     /* update the current parameters so that they match the one of the input stream */
3366     add_input_streams(o, ic);
3367
3368     /* dump the file content */
3369     av_dump_format(ic, nb_input_files, filename, 0);
3370
3371     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3372     input_files[nb_input_files - 1].ctx        = ic;
3373     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3374     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3375     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3376     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3377
3378     for (i = 0; i < o->nb_dump_attachment; i++) {
3379         int j;
3380
3381         for (j = 0; j < ic->nb_streams; j++) {
3382             AVStream *st = ic->streams[j];
3383
3384             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3385                 dump_attachment(st, o->dump_attachment[i].u.str);
3386         }
3387     }
3388
3389     for (i = 0; i < orig_nb_streams; i++)
3390         av_dict_free(&opts[i]);
3391     av_freep(&opts);
3392
3393     reset_options(o, 1);
3394     return 0;
3395 }
3396
3397 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3398 {
3399     char *p;
3400     int n = 1, i;
3401
3402     for (p = kf; *p; p++)
3403         if (*p == ',')
3404             n++;
3405     ost->forced_kf_count = n;
3406     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3407     if (!ost->forced_kf_pts) {
3408         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3409         exit_program(1);
3410     }
3411     for (i = 0; i < n; i++) {
3412         p = i ? strchr(p, ',') + 1 : kf;
3413         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3414     }
3415 }
3416
3417 static uint8_t *get_line(AVIOContext *s)
3418 {
3419     AVIOContext *line;
3420     uint8_t *buf;
3421     char c;
3422
3423     if (avio_open_dyn_buf(&line) < 0) {
3424         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3425         exit_program(1);
3426     }
3427
3428     while ((c = avio_r8(s)) && c != '\n')
3429         avio_w8(line, c);
3430     avio_w8(line, 0);
3431     avio_close_dyn_buf(line, &buf);
3432
3433     return buf;
3434 }
3435
3436 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3437 {
3438     int i, ret = 1;
3439     char filename[1000];
3440     const char *base[3] = { getenv("AVCONV_DATADIR"),
3441                             getenv("HOME"),
3442                             AVCONV_DATADIR,
3443                             };
3444
3445     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3446         if (!base[i])
3447             continue;
3448         if (codec_name) {
3449             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3450                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3451             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3452         }
3453         if (ret) {
3454             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3455                      i != 1 ? "" : "/.avconv", preset_name);
3456             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3457         }
3458     }
3459     return ret;
3460 }
3461
3462 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3463 {
3464     char *codec_name = NULL;
3465
3466     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3467     if (!codec_name) {
3468         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3469                                                   NULL, ost->st->codec->codec_type);
3470         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3471     } else if (!strcmp(codec_name, "copy"))
3472         ost->stream_copy = 1;
3473     else {
3474         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3475         ost->st->codec->codec_id = ost->enc->id;
3476     }
3477 }
3478
3479 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3480 {
3481     OutputStream *ost;
3482     AVStream *st = avformat_new_stream(oc, NULL);
3483     int idx      = oc->nb_streams - 1, ret = 0;
3484     char *bsf = NULL, *next, *codec_tag = NULL;
3485     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3486     double qscale = -1;
3487     char *buf = NULL, *arg = NULL, *preset = NULL;
3488     AVIOContext *s = NULL;
3489
3490     if (!st) {
3491         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3492         exit_program(1);
3493     }
3494
3495     if (oc->nb_streams - 1 < o->nb_streamid_map)
3496         st->id = o->streamid_map[oc->nb_streams - 1];
3497
3498     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3499                                 nb_output_streams + 1);
3500     ost = &output_streams[nb_output_streams - 1];
3501     ost->file_index = nb_output_files;
3502     ost->index = idx;
3503     ost->st    = st;
3504     st->codec->codec_type = type;
3505     choose_encoder(o, oc, ost);
3506     if (ost->enc) {
3507         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3508     }
3509
3510     avcodec_get_context_defaults3(st->codec, ost->enc);
3511     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3512
3513     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3514     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3515         do  {
3516             buf = get_line(s);
3517             if (!buf[0] || buf[0] == '#') {
3518                 av_free(buf);
3519                 continue;
3520             }
3521             if (!(arg = strchr(buf, '='))) {
3522                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3523                 exit_program(1);
3524             }
3525             *arg++ = 0;
3526             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3527             av_free(buf);
3528         } while (!s->eof_reached);
3529         avio_close(s);
3530     }
3531     if (ret) {
3532         av_log(NULL, AV_LOG_FATAL,
3533                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3534                preset, ost->file_index, ost->index);
3535         exit_program(1);
3536     }
3537
3538     ost->max_frames = INT64_MAX;
3539     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3540
3541     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3542     while (bsf) {
3543         if (next = strchr(bsf, ','))
3544             *next++ = 0;
3545         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3546             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3547             exit_program(1);
3548         }
3549         if (bsfc_prev)
3550             bsfc_prev->next = bsfc;
3551         else
3552             ost->bitstream_filters = bsfc;
3553
3554         bsfc_prev = bsfc;
3555         bsf       = next;
3556     }
3557
3558     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3559     if (codec_tag) {
3560         uint32_t tag = strtol(codec_tag, &next, 0);
3561         if (*next)
3562             tag = AV_RL32(codec_tag);
3563         st->codec->codec_tag = tag;
3564     }
3565
3566     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3567     if (qscale >= 0 || same_quant) {
3568         st->codec->flags |= CODEC_FLAG_QSCALE;
3569         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3570     }
3571
3572     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3573         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3574
3575     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3576     return ost;
3577 }
3578
3579 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3580 {
3581     int i;
3582     const char *p = str;
3583     for(i = 0;; i++) {
3584         dest[i] = atoi(p);
3585         if(i == 63)
3586             break;
3587         p = strchr(p, ',');
3588         if(!p) {
3589             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3590             exit_program(1);
3591         }
3592         p++;
3593     }
3594 }
3595
3596 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3597 {
3598     AVStream *st;
3599     OutputStream *ost;
3600     AVCodecContext *video_enc;
3601
3602     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3603     st  = ost->st;
3604     video_enc = st->codec;
3605
3606     if (!ost->stream_copy) {
3607         const char *p = NULL;
3608         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3609         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3610         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3611         int i;
3612
3613         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3614         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3615             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3616             exit_program(1);
3617         }
3618
3619         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3620         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3621             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3622             exit_program(1);
3623         }
3624
3625         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3626         if (frame_aspect_ratio)
3627             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3628
3629         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3630         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3631         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3632             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3633             exit_program(1);
3634         }
3635         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3636
3637         if (intra_only)
3638             video_enc->gop_size = 0;
3639         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3640         if (intra_matrix) {
3641             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3642                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3643                 exit_program(1);
3644             }
3645             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3646         }
3647         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3648         if (inter_matrix) {
3649             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3650                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3651                 exit_program(1);
3652             }
3653             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3654         }
3655
3656         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3657         for(i=0; p; i++){
3658             int start, end, q;
3659             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3660             if(e!=3){
3661                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3662                 exit_program(1);
3663             }
3664             /* FIXME realloc failure */
3665             video_enc->rc_override=
3666                 av_realloc(video_enc->rc_override,
3667                            sizeof(RcOverride)*(i+1));
3668             video_enc->rc_override[i].start_frame= start;
3669             video_enc->rc_override[i].end_frame  = end;
3670             if(q>0){
3671                 video_enc->rc_override[i].qscale= q;
3672                 video_enc->rc_override[i].quality_factor= 1.0;
3673             }
3674             else{
3675                 video_enc->rc_override[i].qscale= 0;
3676                 video_enc->rc_override[i].quality_factor= -q/100.0;
3677             }
3678             p= strchr(p, '/');
3679             if(p) p++;
3680         }
3681         video_enc->rc_override_count=i;
3682         if (!video_enc->rc_initial_buffer_occupancy)
3683             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3684         video_enc->intra_dc_precision= intra_dc_precision - 8;
3685
3686         if (do_psnr)
3687             video_enc->flags|= CODEC_FLAG_PSNR;
3688
3689         /* two pass mode */
3690         if (do_pass) {
3691             if (do_pass & 1) {
3692                 video_enc->flags |= CODEC_FLAG_PASS1;
3693             }
3694             if (do_pass & 2) {
3695                 video_enc->flags |= CODEC_FLAG_PASS2;
3696             }
3697         }
3698
3699         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3700         if (forced_key_frames)
3701             parse_forced_key_frames(forced_key_frames, ost);
3702
3703         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3704
3705         ost->top_field_first = -1;
3706         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3707
3708         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3709
3710 #if CONFIG_AVFILTER
3711         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3712         if (filters)
3713             ost->avfilter = av_strdup(filters);
3714 #endif
3715     }
3716
3717     return ost;
3718 }
3719
3720 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3721 {
3722     int n;
3723     AVStream *st;
3724     OutputStream *ost;
3725     AVCodecContext *audio_enc;
3726
3727     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3728     st  = ost->st;
3729
3730     audio_enc = st->codec;
3731     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3732
3733     if (!ost->stream_copy) {
3734         char *sample_fmt = NULL;
3735
3736         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3737
3738         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3739         if (sample_fmt &&
3740             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3741             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3742             exit_program(1);
3743         }
3744
3745         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3746
3747         ost->rematrix_volume=1.0;
3748         MATCH_PER_STREAM_OPT(rematrix_volume, f, ost->rematrix_volume, oc, st);
3749     }
3750
3751     /* check for channel mapping for this audio stream */
3752     for (n = 0; n < o->nb_audio_channel_maps; n++) {
3753         AudioChannelMap *map = &o->audio_channel_maps[n];
3754         InputStream *ist = &input_streams[ost->source_index];
3755         if ((map->channel_idx == -1 || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) &&
3756             (map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
3757             (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
3758             if (ost->audio_channels_mapped < FF_ARRAY_ELEMS(ost->audio_channels_map))
3759                 ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
3760             else
3761                 av_log(NULL, AV_LOG_FATAL, "Max channel mapping for output %d.%d reached\n",
3762                        ost->file_index, ost->st->index);
3763         }
3764     }
3765
3766     return ost;
3767 }
3768
3769 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3770 {
3771     OutputStream *ost;
3772
3773     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3774     if (!ost->stream_copy) {
3775         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3776         exit_program(1);
3777     }
3778
3779     return ost;
3780 }
3781
3782 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3783 {
3784     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3785     ost->stream_copy = 1;
3786     return ost;
3787 }
3788
3789 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3790 {
3791     AVStream *st;
3792     OutputStream *ost;
3793     AVCodecContext *subtitle_enc;
3794
3795     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3796     st  = ost->st;
3797     subtitle_enc = st->codec;
3798
3799     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3800
3801     return ost;
3802 }
3803
3804 /* arg format is "output-stream-index:streamid-value". */
3805 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3806 {
3807     int idx;
3808     char *p;
3809     char idx_str[16];
3810
3811     av_strlcpy(idx_str, arg, sizeof(idx_str));
3812     p = strchr(idx_str, ':');
3813     if (!p) {
3814         av_log(NULL, AV_LOG_FATAL,
3815                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3816                arg, opt);
3817         exit_program(1);
3818     }
3819     *p++ = '\0';
3820     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3821     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3822     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3823     return 0;
3824 }
3825
3826 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3827 {
3828     AVFormatContext *is = ifile->ctx;
3829     AVFormatContext *os = ofile->ctx;
3830     int i;
3831
3832     for (i = 0; i < is->nb_chapters; i++) {
3833         AVChapter *in_ch = is->chapters[i], *out_ch;
3834         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3835                                       AV_TIME_BASE_Q, in_ch->time_base);
3836         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3837                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3838
3839
3840         if (in_ch->end < ts_off)
3841             continue;
3842         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3843             break;
3844
3845         out_ch = av_mallocz(sizeof(AVChapter));
3846         if (!out_ch)
3847             return AVERROR(ENOMEM);
3848
3849         out_ch->id        = in_ch->id;
3850         out_ch->time_base = in_ch->time_base;
3851         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3852         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3853
3854         if (copy_metadata)
3855             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3856
3857         os->nb_chapters++;
3858         os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
3859         if (!os->chapters)
3860             return AVERROR(ENOMEM);
3861         os->chapters[os->nb_chapters - 1] = out_ch;
3862     }
3863     return 0;
3864 }
3865
3866 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3867 {
3868     int i, err;
3869     AVFormatContext *ic = avformat_alloc_context();
3870
3871     ic->interrupt_callback = int_cb;
3872     err = avformat_open_input(&ic, filename, NULL, NULL);
3873     if (err < 0)
3874         return err;
3875     /* copy stream format */
3876     for(i=0;i<ic->nb_streams;i++) {
3877         AVStream *st;
3878         OutputStream *ost;
3879         AVCodec *codec;
3880         AVCodecContext *avctx;
3881
3882         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3883         ost   = new_output_stream(o, s, codec->type);
3884         st    = ost->st;
3885         avctx = st->codec;
3886
3887         // FIXME: a more elegant solution is needed
3888         memcpy(st, ic->streams[i], sizeof(AVStream));
3889         st->info = av_malloc(sizeof(*st->info));
3890         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3891         st->codec= avctx;
3892         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3893
3894         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3895             choose_sample_fmt(st, codec);
3896         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3897             choose_pixel_fmt(st, codec);
3898     }
3899
3900     av_close_input_file(ic);
3901     return 0;
3902 }
3903
3904 static void opt_output_file(void *optctx, const char *filename)
3905 {
3906     OptionsContext *o = optctx;
3907     AVFormatContext *oc;
3908     int i, err;
3909     AVOutputFormat *file_oformat;
3910     OutputStream *ost;
3911     InputStream  *ist;
3912
3913     if (!strcmp(filename, "-"))
3914         filename = "pipe:";
3915
3916     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3917     if (!oc) {
3918         print_error(filename, err);
3919         exit_program(1);
3920     }
3921     file_oformat= oc->oformat;
3922     oc->interrupt_callback = int_cb;
3923
3924     if (!strcmp(file_oformat->name, "ffm") &&
3925         av_strstart(filename, "http:", NULL)) {
3926         int j;
3927         /* special case for files sent to ffserver: we get the stream
3928            parameters from ffserver */
3929         int err = read_ffserver_streams(o, oc, filename);
3930         if (err < 0) {
3931             print_error(filename, err);
3932             exit_program(1);
3933         }
3934         for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
3935             ost = &output_streams[j];
3936             for (i = 0; i < nb_input_streams; i++) {
3937                 ist = &input_streams[i];
3938                 if(ist->st->codec->codec_type == ost->st->codec->codec_type){
3939                     ost->sync_ist= ist;
3940                     ost->source_index= i;
3941                     ist->discard = 0;
3942                     break;
3943                 }
3944             }
3945             if(!ost->sync_ist){
3946                 av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codec->codec_type));
3947                 exit_program(1);
3948             }
3949         }
3950     } else if (!o->nb_stream_maps) {
3951         /* pick the "best" stream of each type */
3952 #define NEW_STREAM(type, index)\
3953         if (index >= 0) {\
3954             ost = new_ ## type ## _stream(o, oc);\
3955             ost->source_index = index;\
3956             ost->sync_ist     = &input_streams[index];\
3957             input_streams[index].discard = 0;\
3958         }
3959
3960         /* video: highest resolution */
3961         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3962             int area = 0, idx = -1;
3963             for (i = 0; i < nb_input_streams; i++) {
3964                 ist = &input_streams[i];
3965                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3966                     ist->st->codec->width * ist->st->codec->height > area) {
3967                     area = ist->st->codec->width * ist->st->codec->height;
3968                     idx = i;
3969                 }
3970             }
3971             NEW_STREAM(video, idx);
3972         }
3973
3974         /* audio: most channels */
3975         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3976             int channels = 0, idx = -1;
3977             for (i = 0; i < nb_input_streams; i++) {
3978                 ist = &input_streams[i];
3979                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3980                     ist->st->codec->channels > channels) {
3981                     channels = ist->st->codec->channels;
3982                     idx = i;
3983                 }
3984             }
3985             NEW_STREAM(audio, idx);
3986         }
3987
3988         /* subtitles: pick first */
3989         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3990             for (i = 0; i < nb_input_streams; i++)
3991                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3992                     NEW_STREAM(subtitle, i);
3993                     break;
3994                 }
3995         }
3996         /* do something with data? */
3997     } else {
3998         for (i = 0; i < o->nb_stream_maps; i++) {
3999             StreamMap *map = &o->stream_maps[i];
4000
4001             if (map->disabled)
4002                 continue;
4003
4004             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
4005             if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
4006                 continue;
4007             if(o->   audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
4008                 continue;
4009             if(o->   video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
4010                 continue;
4011
4012             switch (ist->st->codec->codec_type) {
4013             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
4014             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
4015             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
4016             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
4017             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
4018             default:
4019                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
4020                        map->file_index, map->stream_index);
4021                 exit_program(1);
4022             }
4023
4024             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
4025             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
4026                                            map->sync_stream_index];
4027             ist->discard = 0;
4028         }
4029     }
4030
4031     /* handle attached files */
4032     for (i = 0; i < o->nb_attachments; i++) {
4033         AVIOContext *pb;
4034         uint8_t *attachment;
4035         const char *p;
4036         int64_t len;
4037
4038         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
4039             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
4040                    o->attachments[i]);
4041             exit_program(1);
4042         }
4043         if ((len = avio_size(pb)) <= 0) {
4044             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
4045                    o->attachments[i]);
4046             exit_program(1);
4047         }
4048         if (!(attachment = av_malloc(len))) {
4049             av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
4050                    o->attachments[i]);
4051             exit_program(1);
4052         }
4053         avio_read(pb, attachment, len);
4054
4055         ost = new_attachment_stream(o, oc);
4056         ost->stream_copy               = 0;
4057         ost->source_index              = -1;
4058         ost->attachment_filename       = o->attachments[i];
4059         ost->st->codec->extradata      = attachment;
4060         ost->st->codec->extradata_size = len;
4061
4062         p = strrchr(o->attachments[i], '/');
4063         av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
4064         avio_close(pb);
4065     }
4066
4067     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
4068     output_files[nb_output_files - 1].ctx       = oc;
4069     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
4070     output_files[nb_output_files - 1].recording_time = o->recording_time;
4071     output_files[nb_output_files - 1].start_time     = o->start_time;
4072     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
4073     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
4074
4075     /* check filename in case of an image number is expected */
4076     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
4077         if (!av_filename_number_test(oc->filename)) {
4078             print_error(oc->filename, AVERROR(EINVAL));
4079             exit_program(1);
4080         }
4081     }
4082
4083     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
4084         /* test if it already exists to avoid loosing precious files */
4085         assert_file_overwrite(filename);
4086
4087         /* open the file */
4088         if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
4089                               &oc->interrupt_callback,
4090                               &output_files[nb_output_files - 1].opts)) < 0) {
4091             print_error(filename, err);
4092             exit_program(1);
4093         }
4094     }
4095
4096     if (o->mux_preload) {
4097         uint8_t buf[64];
4098         snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
4099         av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
4100     }
4101     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
4102
4103     if (loop_output >= 0) {
4104         av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n");
4105         oc->loop_output = loop_output;
4106     }
4107
4108     /* copy chapters */
4109     if (o->chapters_input_file >= nb_input_files) {
4110         if (o->chapters_input_file == INT_MAX) {
4111             /* copy chapters from the first input file that has them*/
4112             o->chapters_input_file = -1;
4113             for (i = 0; i < nb_input_files; i++)
4114                 if (input_files[i].ctx->nb_chapters) {
4115                     o->chapters_input_file = i;
4116                     break;
4117                 }
4118         } else {
4119             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
4120                    o->chapters_input_file);
4121             exit_program(1);
4122         }
4123     }
4124     if (o->chapters_input_file >= 0)
4125         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
4126                       !o->metadata_chapters_manual);
4127
4128     /* copy metadata */
4129     for (i = 0; i < o->nb_meta_data_maps; i++) {
4130         AVFormatContext *files[2];
4131         AVDictionary    **meta[2];
4132         int j;
4133
4134 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4135         if ((index) < 0 || (index) >= (nb_elems)) {\
4136             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
4137                      (desc), (index));\
4138             exit_program(1);\
4139         }
4140
4141         int in_file_index = o->meta_data_maps[i][1].file;
4142         if (in_file_index < 0)
4143             continue;
4144         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
4145
4146         files[0] = oc;
4147         files[1] = input_files[in_file_index].ctx;
4148
4149         for (j = 0; j < 2; j++) {
4150             MetadataMap *map = &o->meta_data_maps[i][j];
4151
4152             switch (map->type) {
4153             case 'g':
4154                 meta[j] = &files[j]->metadata;
4155                 break;
4156             case 's':
4157                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
4158                 meta[j] = &files[j]->streams[map->index]->metadata;
4159                 break;
4160             case 'c':
4161                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
4162                 meta[j] = &files[j]->chapters[map->index]->metadata;
4163                 break;
4164             case 'p':
4165                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
4166                 meta[j] = &files[j]->programs[map->index]->metadata;
4167                 break;
4168             default:
4169                 abort();
4170             }
4171         }
4172
4173         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
4174     }
4175
4176     /* copy global metadata by default */
4177     if (!o->metadata_global_manual && nb_input_files){
4178         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
4179                      AV_DICT_DONT_OVERWRITE);
4180         if(o->recording_time != INT64_MAX)
4181             av_dict_set(&oc->metadata, "duration", NULL, 0);
4182     }
4183     if (!o->metadata_streams_manual)
4184         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
4185             InputStream *ist;
4186             if (output_streams[i].source_index < 0)         /* this is true e.g. for attached files */
4187                 continue;
4188             ist = &input_streams[output_streams[i].source_index];
4189             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
4190         }
4191
4192     /* process manually set metadata */
4193     for (i = 0; i < o->nb_metadata; i++) {
4194         AVDictionary **m;
4195         char type, *val;
4196         int index = 0;
4197
4198         val = strchr(o->metadata[i].u.str, '=');
4199         if (!val) {
4200             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
4201                    o->metadata[i].u.str);
4202             exit_program(1);
4203         }
4204         *val++ = 0;
4205
4206         parse_meta_type(o->metadata[i].specifier, &type, &index);
4207         switch (type) {
4208         case 'g':
4209             m = &oc->metadata;
4210             break;
4211         case 's':
4212             if (index < 0 || index >= oc->nb_streams) {
4213                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
4214                 exit_program(1);
4215             }
4216             m = &oc->streams[index]->metadata;
4217             break;
4218         case 'c':
4219             if (index < 0 || index >= oc->nb_chapters) {
4220                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
4221                 exit_program(1);
4222             }
4223             m = &oc->chapters[index]->metadata;
4224             break;
4225         default:
4226             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
4227             exit_program(1);
4228         }
4229
4230         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
4231     }
4232
4233     reset_options(o, 0);
4234 }
4235
4236 /* same option as mencoder */
4237 static int opt_pass(const char *opt, const char *arg)
4238 {
4239     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 3);
4240     return 0;
4241 }
4242
4243 static int64_t getutime(void)
4244 {
4245 #if HAVE_GETRUSAGE
424