ffmpeg: check debug scanf() return value.
[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)
639 {
640     return received_nb_signals > 1;
641 }
642
643 void exit_program(int ret)
644 {
645     int i;
646
647     /* close files */
648     for(i=0;i<nb_output_files;i++) {
649         AVFormatContext *s = output_files[i].ctx;
650         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
651             avio_close(s->pb);
652         avformat_free_context(s);
653         av_dict_free(&output_files[i].opts);
654     }
655     for(i=0;i<nb_input_files;i++) {
656         av_close_input_file(input_files[i].ctx);
657     }
658     for (i = 0; i < nb_input_streams; i++)
659         av_dict_free(&input_streams[i].opts);
660
661     if (vstats_file)
662         fclose(vstats_file);
663     av_free(vstats_filename);
664
665     av_freep(&input_streams);
666     av_freep(&input_files);
667     av_freep(&output_streams);
668     av_freep(&output_files);
669
670     uninit_opts();
671     av_free(audio_buf);
672     av_free(audio_out);
673     allocated_audio_buf_size= allocated_audio_out_size= 0;
674     av_free(samples);
675
676 #if CONFIG_AVFILTER
677     avfilter_uninit();
678 #endif
679     avformat_network_deinit();
680
681     av_freep(&input_tmp);
682
683     if (received_sigterm) {
684         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
685                (int) received_sigterm);
686         exit (255);
687     }
688
689     exit(ret); /* not all OS-es handle main() return value */
690 }
691
692 static void assert_avoptions(AVDictionary *m)
693 {
694     AVDictionaryEntry *t;
695     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
696         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
697         exit_program(1);
698     }
699 }
700
701 static void assert_codec_experimental(AVCodecContext *c, int encoder)
702 {
703     const char *codec_string = encoder ? "encoder" : "decoder";
704     AVCodec *codec;
705     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
706         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
707         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
708                 "results.\nAdd '-strict experimental' if you want to use it.\n",
709                 codec_string, c->codec->name);
710         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
711         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
712             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
713                    codec_string, codec->name);
714         exit_program(1);
715     }
716 }
717
718 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
719 {
720     if(codec && codec->sample_fmts){
721         const enum AVSampleFormat *p= codec->sample_fmts;
722         for(; *p!=-1; p++){
723             if(*p == st->codec->sample_fmt)
724                 break;
725         }
726         if (*p == -1) {
727             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
728                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
729             if(av_get_sample_fmt_name(st->codec->sample_fmt))
730             av_log(NULL, AV_LOG_WARNING,
731                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
732                    av_get_sample_fmt_name(st->codec->sample_fmt),
733                    codec->name,
734                    av_get_sample_fmt_name(codec->sample_fmts[0]));
735             st->codec->sample_fmt = codec->sample_fmts[0];
736         }
737     }
738 }
739
740 static void choose_sample_rate(AVStream *st, AVCodec *codec)
741 {
742     if(codec && codec->supported_samplerates){
743         const int *p= codec->supported_samplerates;
744         int best=0;
745         int best_dist=INT_MAX;
746         for(; *p; p++){
747             int dist= abs(st->codec->sample_rate - *p);
748             if(dist < best_dist){
749                 best_dist= dist;
750                 best= *p;
751             }
752         }
753         if(best_dist){
754             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
755         }
756         st->codec->sample_rate= best;
757     }
758 }
759
760 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
761 {
762     if(codec && codec->pix_fmts){
763         const enum PixelFormat *p= codec->pix_fmts;
764         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
765             if(st->codec->codec_id==CODEC_ID_MJPEG){
766                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
767             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
768                 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};
769             }
770         }
771         for(; *p!=-1; p++){
772             if(*p == st->codec->pix_fmt)
773                 break;
774         }
775         if (*p == -1) {
776             if(st->codec->pix_fmt != PIX_FMT_NONE)
777                 av_log(NULL, AV_LOG_WARNING,
778                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
779                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
780                         codec->name,
781                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
782             st->codec->pix_fmt = codec->pix_fmts[0];
783         }
784     }
785 }
786
787 static double get_sync_ipts(const OutputStream *ost)
788 {
789     const InputStream *ist = ost->sync_ist;
790     OutputFile *of = &output_files[ost->file_index];
791     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
792 }
793
794 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
795 {
796     int ret;
797
798     while(bsfc){
799         AVPacket new_pkt= *pkt;
800         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
801                                           &new_pkt.data, &new_pkt.size,
802                                           pkt->data, pkt->size,
803                                           pkt->flags & AV_PKT_FLAG_KEY);
804         if(a>0){
805             av_free_packet(pkt);
806             new_pkt.destruct= av_destruct_packet;
807         } else if(a<0){
808             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
809                    bsfc->filter->name, pkt->stream_index,
810                    avctx->codec ? avctx->codec->name : "copy");
811             print_error("", a);
812             if (exit_on_error)
813                 exit_program(1);
814         }
815         *pkt= new_pkt;
816
817         bsfc= bsfc->next;
818     }
819
820     ret= av_interleaved_write_frame(s, pkt);
821     if(ret < 0){
822         print_error("av_interleaved_write_frame()", ret);
823         exit_program(1);
824     }
825 }
826
827 static void do_audio_out(AVFormatContext *s,
828                          OutputStream *ost,
829                          InputStream *ist,
830                          unsigned char *buf, int size)
831 {
832     uint8_t *buftmp;
833     int64_t audio_out_size, audio_buf_size;
834     int64_t allocated_for_size= size;
835
836     int size_out, frame_bytes, ret, resample_changed;
837     AVCodecContext *enc= ost->st->codec;
838     AVCodecContext *dec= ist->st->codec;
839     int osize = av_get_bytes_per_sample(enc->sample_fmt);
840     int isize = av_get_bytes_per_sample(dec->sample_fmt);
841     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
842
843 need_realloc:
844     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
845     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
846     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
847     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
848     audio_buf_size*= osize*enc->channels;
849
850     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
851     if(coded_bps > 8*osize)
852         audio_out_size= audio_out_size * coded_bps / (8*osize);
853     audio_out_size += FF_MIN_BUFFER_SIZE;
854
855     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
856         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
857         exit_program(1);
858     }
859
860     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
861     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
862     if (!audio_buf || !audio_out){
863         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
864         exit_program(1);
865     }
866
867     if (enc->channels != dec->channels
868      || enc->sample_fmt != dec->sample_fmt)
869         ost->audio_resample = 1;
870
871     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
872                        ost->resample_channels    != dec->channels   ||
873                        ost->resample_sample_rate != dec->sample_rate;
874
875     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
876         if (resample_changed) {
877             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",
878                    ist->file_index, ist->st->index,
879                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
880                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
881             ost->resample_sample_fmt  = dec->sample_fmt;
882             ost->resample_channels    = dec->channels;
883             ost->resample_sample_rate = dec->sample_rate;
884             swr_free(&ost->swr);
885         }
886         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
887         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
888             ost->resample_sample_fmt  == enc->sample_fmt &&
889             ost->resample_channels    == enc->channels   &&
890             ost->resample_sample_rate == enc->sample_rate) {
891             //ost->swr = NULL;
892             ost->audio_resample = 0;
893         } else {
894             ost->swr = swr_alloc2(ost->swr,
895                                   enc->channel_layout, enc->sample_fmt, enc->sample_rate,
896                                   dec->channel_layout, dec->sample_fmt, dec->sample_rate,
897                                   ost->audio_channels_mapped ? ost->audio_channels_map : NULL,
898                                   0, NULL);
899             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
900             if (ost->audio_channels_mapped) {
901                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
902                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
903             }
904             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
905             av_opt_set_int(ost->swr, "och", enc->channels, 0);
906             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
907             if(ost->swr && swr_init(ost->swr) < 0){
908                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
909                 swr_free(&ost->swr);
910             }
911
912             if (!ost->swr) {
913                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
914                         dec->channels, dec->sample_rate,
915                         enc->channels, enc->sample_rate);
916                 exit_program(1);
917             }
918         }
919     }
920
921     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
922
923     if(audio_sync_method){
924         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
925                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
926         double idelta= delta*dec->sample_rate / enc->sample_rate;
927         int byte_delta= ((int)idelta)*2*dec->channels;
928
929         //FIXME resample delay
930         if(fabs(delta) > 50){
931             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
932                 if(byte_delta < 0){
933                     byte_delta= FFMAX(byte_delta, -size);
934                     size += byte_delta;
935                     buf  -= byte_delta;
936                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
937                     if(!size)
938                         return;
939                     ist->is_start=0;
940                 }else{
941                     input_tmp= av_realloc(input_tmp, byte_delta + size);
942
943                     if(byte_delta > allocated_for_size - size){
944                         allocated_for_size= byte_delta + (int64_t)size;
945                         goto need_realloc;
946                     }
947                     ist->is_start=0;
948
949                     memset(input_tmp, 0, byte_delta);
950                     memcpy(input_tmp + byte_delta, buf, size);
951                     buf= input_tmp;
952                     size += byte_delta;
953                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
954                 }
955             }else if(audio_sync_method>1){
956                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
957                 av_assert0(ost->audio_resample);
958                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
959                        delta, comp, enc->sample_rate);
960 //                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));
961                 swr_compensate(ost->swr, comp, enc->sample_rate);
962             }
963         }
964     }else
965         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
966                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
967
968     if (ost->audio_resample) {
969         buftmp = audio_buf;
970         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
971                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
972         size_out = size_out * enc->channels * osize;
973     } else {
974         buftmp = buf;
975         size_out = size;
976     }
977
978     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
979
980     /* now encode as many frames as possible */
981     if (enc->frame_size > 1) {
982         /* output resampled raw samples */
983         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
984             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
985             exit_program(1);
986         }
987         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
988
989         frame_bytes = enc->frame_size * osize * enc->channels;
990
991         while (av_fifo_size(ost->fifo) >= frame_bytes) {
992             AVPacket pkt;
993             av_init_packet(&pkt);
994
995             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
996
997             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
998
999             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1000                                        (short *)audio_buf);
1001             if (ret < 0) {
1002                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1003                 exit_program(1);
1004             }
1005             audio_size += ret;
1006             pkt.stream_index= ost->index;
1007             pkt.data= audio_out;
1008             pkt.size= ret;
1009             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1010                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1011             pkt.flags |= AV_PKT_FLAG_KEY;
1012             write_frame(s, &pkt, enc, ost->bitstream_filters);
1013
1014             ost->sync_opts += enc->frame_size;
1015         }
1016     } else {
1017         AVPacket pkt;
1018         av_init_packet(&pkt);
1019
1020         ost->sync_opts += size_out / (osize * enc->channels);
1021
1022         /* output a pcm frame */
1023         /* determine the size of the coded buffer */
1024         size_out /= osize;
1025         if (coded_bps)
1026             size_out = size_out*coded_bps/8;
1027
1028         if(size_out > audio_out_size){
1029             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1030             exit_program(1);
1031         }
1032
1033         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1034         ret = avcodec_encode_audio(enc, audio_out, size_out,
1035                                    (short *)buftmp);
1036         if (ret < 0) {
1037             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1038             exit_program(1);
1039         }
1040         audio_size += ret;
1041         pkt.stream_index= ost->index;
1042         pkt.data= audio_out;
1043         pkt.size= ret;
1044         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1045             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1046         pkt.flags |= AV_PKT_FLAG_KEY;
1047         write_frame(s, &pkt, enc, ost->bitstream_filters);
1048     }
1049 }
1050
1051 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1052 {
1053     AVCodecContext *dec;
1054     AVPicture *picture2;
1055     AVPicture picture_tmp;
1056     uint8_t *buf = 0;
1057
1058     dec = ist->st->codec;
1059
1060     /* deinterlace : must be done before any resize */
1061     if (do_deinterlace) {
1062         int size;
1063
1064         /* create temporary picture */
1065         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1066         buf = av_malloc(size);
1067         if (!buf)
1068             return;
1069
1070         picture2 = &picture_tmp;
1071         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1072
1073         if(avpicture_deinterlace(picture2, picture,
1074                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1075             /* if error, do not deinterlace */
1076             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1077             av_free(buf);
1078             buf = NULL;
1079             picture2 = picture;
1080         }
1081     } else {
1082         picture2 = picture;
1083     }
1084
1085     if (picture != picture2)
1086         *picture = *picture2;
1087     *bufp = buf;
1088 }
1089
1090 static void do_subtitle_out(AVFormatContext *s,
1091                             OutputStream *ost,
1092                             InputStream *ist,
1093                             AVSubtitle *sub,
1094                             int64_t pts)
1095 {
1096     static uint8_t *subtitle_out = NULL;
1097     int subtitle_out_max_size = 1024 * 1024;
1098     int subtitle_out_size, nb, i;
1099     AVCodecContext *enc;
1100     AVPacket pkt;
1101
1102     if (pts == AV_NOPTS_VALUE) {
1103         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1104         if (exit_on_error)
1105             exit_program(1);
1106         return;
1107     }
1108
1109     enc = ost->st->codec;
1110
1111     if (!subtitle_out) {
1112         subtitle_out = av_malloc(subtitle_out_max_size);
1113     }
1114
1115     /* Note: DVB subtitle need one packet to draw them and one other
1116        packet to clear them */
1117     /* XXX: signal it in the codec context ? */
1118     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1119         nb = 2;
1120     else
1121         nb = 1;
1122
1123     for(i = 0; i < nb; i++) {
1124         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1125         // start_display_time is required to be 0
1126         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1127         sub->end_display_time -= sub->start_display_time;
1128         sub->start_display_time = 0;
1129         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1130                                                     subtitle_out_max_size, sub);
1131         if (subtitle_out_size < 0) {
1132             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1133             exit_program(1);
1134         }
1135
1136         av_init_packet(&pkt);
1137         pkt.stream_index = ost->index;
1138         pkt.data = subtitle_out;
1139         pkt.size = subtitle_out_size;
1140         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1141         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1142             /* XXX: the pts correction is handled here. Maybe handling
1143                it in the codec would be better */
1144             if (i == 0)
1145                 pkt.pts += 90 * sub->start_display_time;
1146             else
1147                 pkt.pts += 90 * sub->end_display_time;
1148         }
1149         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1150     }
1151 }
1152
1153 static int bit_buffer_size= 1024*256;
1154 static uint8_t *bit_buffer= NULL;
1155
1156 static void do_video_resample(OutputStream *ost,
1157                               InputStream *ist,
1158                               AVFrame *in_picture,
1159                               AVFrame **out_picture)
1160 {
1161 #if CONFIG_AVFILTER
1162     *out_picture = in_picture;
1163 #else
1164     AVCodecContext *dec = ist->st->codec;
1165     AVCodecContext *enc = ost->st->codec;
1166     int resample_changed = ost->resample_width   != dec->width  ||
1167                            ost->resample_height  != dec->height ||
1168                            ost->resample_pix_fmt != dec->pix_fmt;
1169
1170     *out_picture = in_picture;
1171     if (resample_changed) {
1172         av_log(NULL, AV_LOG_INFO,
1173                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1174                ist->file_index, ist->st->index,
1175                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1176                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1177         ost->resample_width   = dec->width;
1178         ost->resample_height  = dec->height;
1179         ost->resample_pix_fmt = dec->pix_fmt;
1180     }
1181
1182     ost->video_resample = dec->width   != enc->width  ||
1183                           dec->height  != enc->height ||
1184                           dec->pix_fmt != enc->pix_fmt;
1185
1186     if (ost->video_resample) {
1187         *out_picture = &ost->resample_frame;
1188         if (!ost->img_resample_ctx || resample_changed) {
1189             /* initialize the destination picture */
1190             if (!ost->resample_frame.data[0]) {
1191                 avcodec_get_frame_defaults(&ost->resample_frame);
1192                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1193                                     enc->width, enc->height)) {
1194                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1195                     exit_program(1);
1196                 }
1197             }
1198             /* initialize a new scaler context */
1199             sws_freeContext(ost->img_resample_ctx);
1200             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1201                                                    enc->width, enc->height, enc->pix_fmt,
1202                                                    ost->sws_flags, NULL, NULL, NULL);
1203             if (ost->img_resample_ctx == NULL) {
1204                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1205                 exit_program(1);
1206             }
1207         }
1208         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1209               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1210     }
1211 #endif
1212 }
1213
1214
1215 static void do_video_out(AVFormatContext *s,
1216                          OutputStream *ost,
1217                          InputStream *ist,
1218                          AVFrame *in_picture,
1219                          int *frame_size, float quality)
1220 {
1221     int nb_frames, i, ret, format_video_sync;
1222     AVFrame *final_picture;
1223     AVCodecContext *enc;
1224     double sync_ipts;
1225     double duration = 0;
1226
1227     enc = ost->st->codec;
1228
1229     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1230         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1231         if(ist->st->avg_frame_rate.num)
1232             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1233
1234         duration /= av_q2d(enc->time_base);
1235     }
1236
1237     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1238
1239     /* by default, we output a single frame */
1240     nb_frames = 1;
1241
1242     *frame_size = 0;
1243
1244     format_video_sync = video_sync_method;
1245     if (format_video_sync < 0)
1246         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1247
1248     if (format_video_sync) {
1249         double vdelta = sync_ipts - ost->sync_opts + duration;
1250         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1251         if (vdelta < -1.1)
1252             nb_frames = 0;
1253         else if (format_video_sync == 2) {
1254             if(vdelta<=-0.6){
1255                 nb_frames=0;
1256             }else if(vdelta>0.6)
1257                 ost->sync_opts= lrintf(sync_ipts);
1258         }else if (vdelta > 1.1)
1259             nb_frames = lrintf(vdelta);
1260 //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);
1261         if (nb_frames == 0){
1262             ++nb_frames_drop;
1263             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1264         }else if (nb_frames > 1) {
1265             nb_frames_dup += nb_frames - 1;
1266             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1267         }
1268     }else
1269         ost->sync_opts= lrintf(sync_ipts);
1270
1271     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1272     if (nb_frames <= 0)
1273         return;
1274
1275     do_video_resample(ost, ist, in_picture, &final_picture);
1276
1277     /* duplicates frame if needed */
1278     for(i=0;i<nb_frames;i++) {
1279         AVPacket pkt;
1280         av_init_packet(&pkt);
1281         pkt.stream_index= ost->index;
1282
1283         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1284             /* raw pictures are written as AVPicture structure to
1285                avoid any copies. We support temporarily the older
1286                method. */
1287             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1288             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1289             pkt.data= (uint8_t *)final_picture;
1290             pkt.size=  sizeof(AVPicture);
1291             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1292             pkt.flags |= AV_PKT_FLAG_KEY;
1293
1294             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1295         } else {
1296             AVFrame big_picture;
1297
1298             big_picture= *final_picture;
1299             /* better than nothing: use input picture interlaced
1300                settings */
1301             big_picture.interlaced_frame = in_picture->interlaced_frame;
1302             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1303                 if (ost->top_field_first == -1)
1304                     big_picture.top_field_first = in_picture->top_field_first;
1305                 else
1306                     big_picture.top_field_first = !!ost->top_field_first;
1307             }
1308
1309             /* handles same_quant here. This is not correct because it may
1310                not be a global option */
1311             big_picture.quality = quality;
1312             if (!enc->me_threshold)
1313                 big_picture.pict_type = 0;
1314 //            big_picture.pts = AV_NOPTS_VALUE;
1315             big_picture.pts= ost->sync_opts;
1316 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1317 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1318             if (ost->forced_kf_index < ost->forced_kf_count &&
1319                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1320                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1321                 ost->forced_kf_index++;
1322             }
1323             ret = avcodec_encode_video(enc,
1324                                        bit_buffer, bit_buffer_size,
1325                                        &big_picture);
1326             if (ret < 0) {
1327                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1328                 exit_program(1);
1329             }
1330
1331             if(ret>0){
1332                 pkt.data= bit_buffer;
1333                 pkt.size= ret;
1334                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1335                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1336 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1337    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1338    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1339
1340                 if(enc->coded_frame->key_frame)
1341                     pkt.flags |= AV_PKT_FLAG_KEY;
1342                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1343                 *frame_size = ret;
1344                 video_size += ret;
1345                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1346                 //        enc->frame_number-1, ret, enc->pict_type);
1347                 /* if two pass, output log */
1348                 if (ost->logfile && enc->stats_out) {
1349                     fprintf(ost->logfile, "%s", enc->stats_out);
1350                 }
1351             }
1352         }
1353         ost->sync_opts++;
1354         ost->frame_number++;
1355     }
1356 }
1357
1358 static double psnr(double d)
1359 {
1360     return -10.0*log(d)/log(10.0);
1361 }
1362
1363 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1364                            int frame_size)
1365 {
1366     AVCodecContext *enc;
1367     int frame_number;
1368     double ti1, bitrate, avg_bitrate;
1369
1370     /* this is executed just the first time do_video_stats is called */
1371     if (!vstats_file) {
1372         vstats_file = fopen(vstats_filename, "w");
1373         if (!vstats_file) {
1374             perror("fopen");
1375             exit_program(1);
1376         }
1377     }
1378
1379     enc = ost->st->codec;
1380     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1381         frame_number = ost->frame_number;
1382         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1383         if (enc->flags&CODEC_FLAG_PSNR)
1384             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1385
1386         fprintf(vstats_file,"f_size= %6d ", frame_size);
1387         /* compute pts value */
1388         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1389         if (ti1 < 0.01)
1390             ti1 = 0.01;
1391
1392         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1393         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1394         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1395             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1396         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1397     }
1398 }
1399
1400 static void print_report(OutputFile *output_files,
1401                          OutputStream *ost_table, int nb_ostreams,
1402                          int is_last_report, int64_t timer_start, int64_t cur_time)
1403 {
1404     char buf[1024];
1405     OutputStream *ost;
1406     AVFormatContext *oc;
1407     int64_t total_size;
1408     AVCodecContext *enc;
1409     int frame_number, vid, i;
1410     double bitrate;
1411     int64_t pts = INT64_MAX;
1412     static int64_t last_time = -1;
1413     static int qp_histogram[52];
1414     int hours, mins, secs, us;
1415
1416     if (!print_stats && !is_last_report)
1417         return;
1418
1419     if (!is_last_report) {
1420         if (last_time == -1) {
1421             last_time = cur_time;
1422             return;
1423         }
1424         if ((cur_time - last_time) < 500000)
1425             return;
1426         last_time = cur_time;
1427     }
1428
1429
1430     oc = output_files[0].ctx;
1431
1432     total_size = avio_size(oc->pb);
1433     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1434         total_size= avio_tell(oc->pb);
1435
1436     buf[0] = '\0';
1437     vid = 0;
1438     for(i=0;i<nb_ostreams;i++) {
1439         float q = -1;
1440         ost = &ost_table[i];
1441         enc = ost->st->codec;
1442         if (!ost->stream_copy && enc->coded_frame)
1443             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1444         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1445             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1446         }
1447         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1448             float t = (cur_time-timer_start) / 1000000.0;
1449
1450             frame_number = ost->frame_number;
1451             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1452                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1453             if(is_last_report)
1454                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1455             if(qp_hist){
1456                 int j;
1457                 int qp = lrintf(q);
1458                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1459                     qp_histogram[qp]++;
1460                 for(j=0; j<32; j++)
1461                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1462             }
1463             if (enc->flags&CODEC_FLAG_PSNR){
1464                 int j;
1465                 double error, error_sum=0;
1466                 double scale, scale_sum=0;
1467                 char type[3]= {'Y','U','V'};
1468                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1469                 for(j=0; j<3; j++){
1470                     if(is_last_report){
1471                         error= enc->error[j];
1472                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1473                     }else{
1474                         error= enc->coded_frame->error[j];
1475                         scale= enc->width*enc->height*255.0*255.0;
1476                     }
1477                     if(j) scale/=4;
1478                     error_sum += error;
1479                     scale_sum += scale;
1480                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1481                 }
1482                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1483             }
1484             vid = 1;
1485         }
1486         /* compute min output value */
1487         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1488                                       ost->st->time_base, AV_TIME_BASE_Q));
1489     }
1490
1491     secs = pts / AV_TIME_BASE;
1492     us = pts % AV_TIME_BASE;
1493     mins = secs / 60;
1494     secs %= 60;
1495     hours = mins / 60;
1496     mins %= 60;
1497
1498     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1499
1500     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1501              "size=%8.0fkB time=", total_size / 1024.0);
1502     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1503              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1504              (100 * us) / AV_TIME_BASE);
1505     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1506              "bitrate=%6.1fkbits/s", bitrate);
1507
1508     if (nb_frames_dup || nb_frames_drop)
1509         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1510                 nb_frames_dup, nb_frames_drop);
1511
1512     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1513
1514     fflush(stderr);
1515
1516     if (is_last_report) {
1517         int64_t raw= audio_size + video_size + extra_size;
1518         av_log(NULL, AV_LOG_INFO, "\n");
1519         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1520                video_size/1024.0,
1521                audio_size/1024.0,
1522                extra_size/1024.0,
1523                100.0*(total_size - raw)/raw
1524         );
1525     }
1526 }
1527
1528 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1529 {
1530     int fill_char = 0x00;
1531     if (sample_fmt == AV_SAMPLE_FMT_U8)
1532         fill_char = 0x80;
1533     memset(buf, fill_char, size);
1534 }
1535
1536 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1537 {
1538     int i, ret;
1539
1540     for (i = 0; i < nb_ostreams; i++) {
1541         OutputStream   *ost = &ost_table[i];
1542         AVCodecContext *enc = ost->st->codec;
1543         AVFormatContext *os = output_files[ost->file_index].ctx;
1544
1545         if (!ost->encoding_needed)
1546             continue;
1547
1548         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1549             continue;
1550         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1551             continue;
1552
1553         for(;;) {
1554             AVPacket pkt;
1555             int fifo_bytes;
1556             av_init_packet(&pkt);
1557             pkt.stream_index= ost->index;
1558
1559             switch (ost->st->codec->codec_type) {
1560             case AVMEDIA_TYPE_AUDIO:
1561                 fifo_bytes = av_fifo_size(ost->fifo);
1562                 ret = 0;
1563                 /* encode any samples remaining in fifo */
1564                 if (fifo_bytes > 0) {
1565                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1566                     int fs_tmp = enc->frame_size;
1567
1568                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1569                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1570                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1571                     } else { /* pad */
1572                         int frame_bytes = enc->frame_size*osize*enc->channels;
1573                         if (allocated_audio_buf_size < frame_bytes)
1574                             exit_program(1);
1575                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1576                     }
1577
1578                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1579                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1580                                               ost->st->time_base.num, enc->sample_rate);
1581                     enc->frame_size = fs_tmp;
1582                 }
1583                 if (ret <= 0) {
1584                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1585                 }
1586                 if (ret < 0) {
1587                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1588                     exit_program(1);
1589                 }
1590                 audio_size += ret;
1591                 pkt.flags |= AV_PKT_FLAG_KEY;
1592                 break;
1593             case AVMEDIA_TYPE_VIDEO:
1594                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1595                 if (ret < 0) {
1596                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1597                     exit_program(1);
1598                 }
1599                 video_size += ret;
1600                 if(enc->coded_frame && enc->coded_frame->key_frame)
1601                     pkt.flags |= AV_PKT_FLAG_KEY;
1602                 if (ost->logfile && enc->stats_out) {
1603                     fprintf(ost->logfile, "%s", enc->stats_out);
1604                 }
1605                 break;
1606             default:
1607                 ret=-1;
1608             }
1609
1610             if (ret <= 0)
1611                 break;
1612             pkt.data = bit_buffer;
1613             pkt.size = ret;
1614             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1615                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1616             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1617         }
1618     }
1619 }
1620
1621 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1622 static int output_packet(InputStream *ist, int ist_index,
1623                          OutputStream *ost_table, int nb_ostreams,
1624                          const AVPacket *pkt)
1625 {
1626     AVFormatContext *os;
1627     OutputStream *ost;
1628     int ret = 0, i;
1629     int got_output;
1630     void *buffer_to_free = NULL;
1631     static unsigned int samples_size= 0;
1632     AVSubtitle subtitle, *subtitle_to_free;
1633     int64_t pkt_dts = AV_NOPTS_VALUE;
1634     int64_t pkt_pts = AV_NOPTS_VALUE;
1635 #if CONFIG_AVFILTER
1636     int frame_available;
1637 #endif
1638     float quality = 0;
1639
1640     AVPacket avpkt;
1641     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1642
1643     if(ist->next_pts == AV_NOPTS_VALUE)
1644         ist->next_pts= ist->pts;
1645
1646     if (pkt == NULL) {
1647         /* EOF handling */
1648         av_init_packet(&avpkt);
1649         avpkt.data = NULL;
1650         avpkt.size = 0;
1651         goto handle_eof;
1652     } else {
1653         avpkt = *pkt;
1654     }
1655
1656     if(pkt->dts != AV_NOPTS_VALUE){
1657         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1658             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1659         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1660     }
1661     if(pkt->pts != AV_NOPTS_VALUE)
1662         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1663
1664     //while we have more to decode or while the decoder did output something on EOF
1665     while (avpkt.size > 0 || (!pkt && got_output)) {
1666         uint8_t *data_buf, *decoded_data_buf;
1667         int data_size, decoded_data_size;
1668         AVFrame *decoded_frame, *filtered_frame;
1669     handle_eof:
1670         ist->pts= ist->next_pts;
1671
1672         if(avpkt.size && avpkt.size != pkt->size)
1673             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1674                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1675             ist->showed_multi_packet_warning=1;
1676
1677         /* decode the packet if needed */
1678         decoded_frame    = filtered_frame = NULL;
1679         decoded_data_buf = NULL; /* fail safe */
1680         decoded_data_size= 0;
1681         data_buf  = avpkt.data;
1682         data_size = avpkt.size;
1683         subtitle_to_free = NULL;
1684         if (ist->decoding_needed) {
1685             switch(ist->st->codec->codec_type) {
1686             case AVMEDIA_TYPE_AUDIO:{
1687                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1688                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1689                     av_free(samples);
1690                     samples= av_malloc(samples_size);
1691                 }
1692                 decoded_data_size= samples_size;
1693                     /* XXX: could avoid copy if PCM 16 bits with same
1694                        endianness as CPU */
1695                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1696                                             &avpkt);
1697                 if (ret < 0)
1698                     return ret;
1699                 avpkt.data += ret;
1700                 avpkt.size -= ret;
1701                 data_size   = ret;
1702                 got_output  = decoded_data_size > 0;
1703                 /* Some bug in mpeg audio decoder gives */
1704                 /* decoded_data_size < 0, it seems they are overflows */
1705                 if (!got_output) {
1706                     /* no audio frame */
1707                     continue;
1708                 }
1709                 decoded_data_buf = (uint8_t *)samples;
1710                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1711                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1712                 break;}
1713             case AVMEDIA_TYPE_VIDEO:
1714                     if (!(decoded_frame = avcodec_alloc_frame()))
1715                         return AVERROR(ENOMEM);
1716                     avpkt.pts = pkt_pts;
1717                     avpkt.dts = pkt_dts;
1718                     pkt_pts = AV_NOPTS_VALUE;
1719                     if(pkt_dts != AV_NOPTS_VALUE && ist->st->codec->time_base.num != 0) {
1720                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1721                         pkt_dts += ((int64_t)AV_TIME_BASE *
1722                                           ist->st->codec->time_base.num * ticks) /
1723                             ist->st->codec->time_base.den;
1724                     }else
1725                         pkt_dts = AV_NOPTS_VALUE;
1726
1727                     ret = avcodec_decode_video2(ist->st->codec,
1728                                                 decoded_frame, &got_output, &avpkt);
1729                     quality = same_quant ? decoded_frame->quality : 0;
1730                     if (ret < 0)
1731                         goto fail;
1732                     if (!got_output) {
1733                         /* no picture yet */
1734                         av_freep(&decoded_frame);
1735                         goto discard_packet;
1736                     }
1737
1738                     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1739                         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1740
1741                     if (ist->st->codec->time_base.num != 0) {
1742                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1743                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1744                                           ist->st->codec->time_base.num * ticks) /
1745                             ist->st->codec->time_base.den;
1746                     }
1747                     avpkt.size = 0;
1748                     buffer_to_free = NULL;
1749                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1750                     break;
1751             case AVMEDIA_TYPE_SUBTITLE:
1752                 ret = avcodec_decode_subtitle2(ist->st->codec,
1753                                                &subtitle, &got_output, &avpkt);
1754                 if (ret < 0)
1755                     return ret;
1756                 if (!got_output) {
1757                     goto discard_packet;
1758                 }
1759                 subtitle_to_free = &subtitle;
1760                 avpkt.size = 0;
1761                 break;
1762             default:
1763                 return -1;
1764             }
1765         } else {
1766             switch(ist->st->codec->codec_type) {
1767             case AVMEDIA_TYPE_AUDIO:
1768                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1769                     ist->st->codec->sample_rate;
1770                 break;
1771             case AVMEDIA_TYPE_VIDEO:
1772                 if (ist->st->codec->time_base.num != 0) {
1773                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1774                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1775                                       ist->st->codec->time_base.num * ticks) /
1776                         ist->st->codec->time_base.den;
1777                 }
1778                 break;
1779             }
1780             avpkt.size = 0;
1781         }
1782
1783 #if CONFIG_AVFILTER
1784         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1785         for(i=0;i<nb_ostreams;i++) {
1786             OutputFile *of = &output_files[ost_table[i].file_index];
1787             if (of->start_time == 0 || ist->pts >= of->start_time) {
1788                 ost = &ost_table[i];
1789                 if (ost->input_video_filter && ost->source_index == ist_index) {
1790                     if (!decoded_frame->sample_aspect_ratio.num)
1791                         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1792                     decoded_frame->pts = ist->pts;
1793
1794                     av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1795                 }
1796             }
1797         }
1798 #endif
1799
1800         // preprocess audio (volume)
1801         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1802             if (audio_volume != 256) {
1803                 switch (ist->st->codec->sample_fmt) {
1804                 case AV_SAMPLE_FMT_U8:
1805                 {
1806                     uint8_t *volp = samples;
1807                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1808                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1809                         *volp++ = av_clip_uint8(v);
1810                     }
1811                     break;
1812                 }
1813                 case AV_SAMPLE_FMT_S16:
1814                 {
1815                     int16_t *volp = samples;
1816                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1817                         int v = ((*volp) * audio_volume + 128) >> 8;
1818                         *volp++ = av_clip_int16(v);
1819                     }
1820                     break;
1821                 }
1822                 case AV_SAMPLE_FMT_S32:
1823                 {
1824                     int32_t *volp = samples;
1825                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1826                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1827                         *volp++ = av_clipl_int32(v);
1828                     }
1829                     break;
1830                 }
1831                 case AV_SAMPLE_FMT_FLT:
1832                 {
1833                     float *volp = samples;
1834                     float scale = audio_volume / 256.f;
1835                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1836                         *volp++ *= scale;
1837                     }
1838                     break;
1839                 }
1840                 case AV_SAMPLE_FMT_DBL:
1841                 {
1842                     double *volp = samples;
1843                     double scale = audio_volume / 256.;
1844                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1845                         *volp++ *= scale;
1846                     }
1847                     break;
1848                 }
1849                 default:
1850                     av_log(NULL, AV_LOG_FATAL,
1851                            "Audio volume adjustment on sample format %s is not supported.\n",
1852                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1853                     exit_program(1);
1854                 }
1855             }
1856         }
1857
1858         /* frame rate emulation */
1859         if (input_files[ist->file_index].rate_emu) {
1860             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1861             int64_t now = av_gettime() - ist->start;
1862             if (pts > now)
1863                 usleep(pts - now);
1864         }
1865         /* if output time reached then transcode raw format,
1866            encode packets and output them */
1867         for (i = 0; i < nb_ostreams; i++) {
1868             OutputFile *of = &output_files[ost_table[i].file_index];
1869             int frame_size;
1870
1871             ost = &ost_table[i];
1872             if (ost->source_index != ist_index)
1873                 continue;
1874
1875             if (of->start_time && ist->pts < of->start_time)
1876                 continue;
1877
1878             if (of->recording_time != INT64_MAX &&
1879                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1880                               (AVRational){1, 1000000}) >= 0) {
1881                 ost->is_past_recording_time = 1;
1882                 continue;
1883             }
1884
1885 #if CONFIG_AVFILTER
1886             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1887                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1888             while (frame_available) {
1889                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1890                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1891                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1892                         goto cont;
1893                     if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1894                         ret = AVERROR(ENOMEM);
1895                         goto fail;
1896                     }
1897                     *filtered_frame= *decoded_frame; //for me_threshold
1898                     if (ost->picref) {
1899                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1900                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1901                     }
1902                 }
1903 #else
1904                 filtered_frame = decoded_frame;
1905 #endif
1906                 os = output_files[ost->file_index].ctx;
1907
1908                 /* set the input output pts pairs */
1909                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1910
1911                 if (ost->encoding_needed) {
1912                     av_assert0(ist->decoding_needed);
1913                     switch(ost->st->codec->codec_type) {
1914                     case AVMEDIA_TYPE_AUDIO:
1915                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1916                         break;
1917                     case AVMEDIA_TYPE_VIDEO:
1918 #if CONFIG_AVFILTER
1919                         if (ost->picref->video && !ost->frame_aspect_ratio)
1920                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1921 #endif
1922                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1923                                      same_quant ? quality : ost->st->codec->global_quality);
1924                         if (vstats_filename && frame_size)
1925                             do_video_stats(os, ost, frame_size);
1926                         break;
1927                     case AVMEDIA_TYPE_SUBTITLE:
1928                         do_subtitle_out(os, ost, ist, &subtitle,
1929                                         pkt->pts);
1930                         break;
1931                     default:
1932                         abort();
1933                     }
1934                 } else {
1935                     AVPicture pict;
1936                     AVPacket opkt;
1937                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1938                     av_init_packet(&opkt);
1939
1940                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1941                         !ost->copy_initial_nonkeyframes)
1942 #if !CONFIG_AVFILTER
1943                         continue;
1944 #else
1945                         goto cont;
1946 #endif
1947
1948                     /* no reencoding needed : output the packet directly */
1949                     /* force the input stream PTS */
1950
1951                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1952                         audio_size += data_size;
1953                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1954                         video_size += data_size;
1955                         ost->sync_opts++;
1956                     }
1957
1958                     opkt.stream_index= ost->index;
1959                     if(pkt->pts != AV_NOPTS_VALUE)
1960                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1961                     else
1962                         opkt.pts= AV_NOPTS_VALUE;
1963
1964                     if (pkt->dts == AV_NOPTS_VALUE)
1965                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1966                     else
1967                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1968                     opkt.dts -= ost_tb_start_time;
1969
1970                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1971                     opkt.flags= pkt->flags;
1972
1973                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1974                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1975                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1976                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1977                        ) {
1978                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1979                             opkt.destruct= av_destruct_packet;
1980                     } else {
1981                         opkt.data = data_buf;
1982                         opkt.size = data_size;
1983                     }
1984
1985                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1986                         /* store AVPicture in AVPacket, as expected by the output format */
1987                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1988                         opkt.data = (uint8_t *)&pict;
1989                         opkt.size = sizeof(AVPicture);
1990                         opkt.flags |= AV_PKT_FLAG_KEY;
1991                     }
1992                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1993                     ost->st->codec->frame_number++;
1994                     ost->frame_number++;
1995                     av_free_packet(&opkt);
1996                 }
1997 #if CONFIG_AVFILTER
1998                 cont:
1999                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
2000                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2001                 avfilter_unref_buffer(ost->picref);
2002             }
2003             av_freep(&filtered_frame);
2004 #endif
2005         }
2006
2007 fail:
2008         av_free(buffer_to_free);
2009         /* XXX: allocate the subtitles in the codec ? */
2010         if (subtitle_to_free) {
2011             avsubtitle_free(subtitle_to_free);
2012             subtitle_to_free = NULL;
2013         }
2014         av_freep(&decoded_frame);
2015         if (ret < 0)
2016             return ret;
2017     }
2018  discard_packet:
2019
2020     return 0;
2021 }
2022
2023 static void print_sdp(OutputFile *output_files, int n)
2024 {
2025     char sdp[2048];
2026     int i;
2027     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2028
2029     if (!avc)
2030         exit_program(1);
2031     for (i = 0; i < n; i++)
2032         avc[i] = output_files[i].ctx;
2033
2034     av_sdp_create(avc, n, sdp, sizeof(sdp));
2035     printf("SDP:\n%s\n", sdp);
2036     fflush(stdout);
2037     av_freep(&avc);
2038 }
2039
2040 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2041                              char *error, int error_len)
2042 {
2043     InputStream *ist = &input_streams[ist_index];
2044     if (ist->decoding_needed) {
2045         AVCodec *codec = ist->dec;
2046         if (!codec) {
2047             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2048                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2049             return AVERROR(EINVAL);
2050         }
2051         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2052             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2053                     ist->file_index, ist->st->index);
2054             return AVERROR(EINVAL);
2055         }
2056         assert_codec_experimental(ist->st->codec, 0);
2057         assert_avoptions(ist->opts);
2058     }
2059
2060     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;
2061     ist->next_pts = AV_NOPTS_VALUE;
2062     ist->is_start = 1;
2063
2064     return 0;
2065 }
2066
2067 static int transcode_init(OutputFile *output_files, int nb_output_files,
2068                           InputFile  *input_files,  int nb_input_files)
2069 {
2070     int ret = 0, i, j, k;
2071     AVFormatContext *os;
2072     AVCodecContext *codec, *icodec;
2073     OutputStream *ost;
2074     InputStream *ist;
2075     char error[1024];
2076     int want_sdp = 1;
2077
2078     /* init framerate emulation */
2079     for (i = 0; i < nb_input_files; i++) {
2080         InputFile *ifile = &input_files[i];
2081         if (ifile->rate_emu)
2082             for (j = 0; j < ifile->nb_streams; j++)
2083                 input_streams[j + ifile->ist_index].start = av_gettime();
2084     }
2085
2086     /* output stream init */
2087     for(i=0;i<nb_output_files;i++) {
2088         os = output_files[i].ctx;
2089         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2090             av_dump_format(os, i, os->filename, 1);
2091             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2092             return AVERROR(EINVAL);
2093         }
2094     }
2095
2096     /* for each output stream, we compute the right encoding parameters */
2097     for (i = 0; i < nb_output_streams; i++) {
2098         ost = &output_streams[i];
2099         os = output_files[ost->file_index].ctx;
2100         ist = &input_streams[ost->source_index];
2101
2102         if (ost->attachment_filename)
2103             continue;
2104
2105         codec = ost->st->codec;
2106         icodec = ist->st->codec;
2107
2108         ost->st->disposition = ist->st->disposition;
2109         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2110         codec->chroma_sample_location = icodec->chroma_sample_location;
2111
2112         if (ost->stream_copy) {
2113             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2114
2115             if (extra_size > INT_MAX) {
2116                 return AVERROR(EINVAL);
2117             }
2118
2119             /* if stream_copy is selected, no need to decode or encode */
2120             codec->codec_id = icodec->codec_id;
2121             codec->codec_type = icodec->codec_type;
2122
2123             if(!codec->codec_tag){
2124                 if(   !os->oformat->codec_tag
2125                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2126                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2127                     codec->codec_tag = icodec->codec_tag;
2128             }
2129
2130             codec->bit_rate = icodec->bit_rate;
2131             codec->rc_max_rate    = icodec->rc_max_rate;
2132             codec->rc_buffer_size = icodec->rc_buffer_size;
2133             codec->extradata= av_mallocz(extra_size);
2134             if (!codec->extradata) {
2135                 return AVERROR(ENOMEM);
2136             }
2137             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2138             codec->extradata_size= icodec->extradata_size;
2139
2140             codec->time_base = ist->st->time_base;
2141             if(!strcmp(os->oformat->name, "avi")) {
2142                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2143                     codec->time_base = icodec->time_base;
2144                     codec->time_base.num *= icodec->ticks_per_frame;
2145                     codec->time_base.den *= 2;
2146                 }
2147             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2148                 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){
2149                     codec->time_base = icodec->time_base;
2150                     codec->time_base.num *= icodec->ticks_per_frame;
2151                 }
2152             }
2153             av_reduce(&codec->time_base.num, &codec->time_base.den,
2154                         codec->time_base.num, codec->time_base.den, INT_MAX);
2155
2156             switch(codec->codec_type) {
2157             case AVMEDIA_TYPE_AUDIO:
2158                 if(audio_volume != 256) {
2159                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2160                     exit_program(1);
2161                 }
2162                 codec->channel_layout = icodec->channel_layout;
2163                 codec->sample_rate = icodec->sample_rate;
2164                 codec->channels = icodec->channels;
2165                 codec->frame_size = icodec->frame_size;
2166                 codec->audio_service_type = icodec->audio_service_type;
2167                 codec->block_align= icodec->block_align;
2168                 break;
2169             case AVMEDIA_TYPE_VIDEO:
2170                 codec->pix_fmt = icodec->pix_fmt;
2171                 codec->width = icodec->width;
2172                 codec->height = icodec->height;
2173                 codec->has_b_frames = icodec->has_b_frames;
2174                 if (!codec->sample_aspect_ratio.num) {
2175                     codec->sample_aspect_ratio =
2176                     ost->st->sample_aspect_ratio =
2177                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2178                         ist->st->codec->sample_aspect_ratio.num ?
2179                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2180                 }
2181                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2182                 break;
2183             case AVMEDIA_TYPE_SUBTITLE:
2184                 codec->width = icodec->width;
2185                 codec->height = icodec->height;
2186                 break;
2187             case AVMEDIA_TYPE_DATA:
2188             case AVMEDIA_TYPE_ATTACHMENT:
2189                 break;
2190             default:
2191                 abort();
2192             }
2193         } else {
2194             if (!ost->enc)
2195                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2196             ist->decoding_needed = 1;
2197             ost->encoding_needed = 1;
2198             switch(codec->codec_type) {
2199             case AVMEDIA_TYPE_AUDIO:
2200                 ost->fifo= av_fifo_alloc(1024);
2201                 if (!ost->fifo) {
2202                     return AVERROR(ENOMEM);
2203                 }
2204                 if (!codec->sample_rate)
2205                     codec->sample_rate = icodec->sample_rate;
2206                 choose_sample_rate(ost->st, ost->enc);
2207                 codec->time_base = (AVRational){1, codec->sample_rate};
2208                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2209                     codec->sample_fmt = icodec->sample_fmt;
2210                 choose_sample_fmt(ost->st, ost->enc);
2211                 if (ost->audio_channels_mapped) {
2212                     /* the requested output channel is set to the number of
2213                      * -map_channel only if no -ac are specified */
2214                     if (!codec->channels) {
2215                         codec->channels       = ost->audio_channels_mapped;
2216                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2217                         if (!codec->channel_layout) {
2218                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2219                             exit_program(1);
2220                         }
2221                     }
2222                     /* fill unused channel mapping with -1 (which means a muted
2223                      * channel in case the number of output channels is bigger
2224                      * than the number of mapped channel) */
2225                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2226                         ost->audio_channels_map[j] = -1;
2227                 } else if (!codec->channels) {
2228                     codec->channels = icodec->channels;
2229                     codec->channel_layout = icodec->channel_layout;
2230                 }
2231                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2232                     codec->channel_layout = 0;
2233                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2234                 ost->audio_resample |=    codec->sample_fmt     != icodec->sample_fmt
2235                                        || codec->channel_layout != icodec->channel_layout;
2236                 icodec->request_channels = codec->channels;
2237                 ost->resample_sample_fmt  = icodec->sample_fmt;
2238                 ost->resample_sample_rate = icodec->sample_rate;
2239                 ost->resample_channels    = icodec->channels;
2240                 break;
2241             case AVMEDIA_TYPE_VIDEO:
2242                 if (codec->pix_fmt == PIX_FMT_NONE)
2243                     codec->pix_fmt = icodec->pix_fmt;
2244                 choose_pixel_fmt(ost->st, ost->enc);
2245
2246                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2247                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2248                     exit_program(1);
2249                 }
2250
2251                 if (!codec->width || !codec->height) {
2252                     codec->width  = icodec->width;
2253                     codec->height = icodec->height;
2254                 }
2255
2256                 ost->video_resample = codec->width   != icodec->width  ||
2257                                       codec->height  != icodec->height ||
2258                                       codec->pix_fmt != icodec->pix_fmt;
2259                 if (ost->video_resample) {
2260                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2261                 }
2262
2263                 ost->resample_height = icodec->height;
2264                 ost->resample_width  = icodec->width;
2265                 ost->resample_pix_fmt= icodec->pix_fmt;
2266
2267                 if (!ost->frame_rate.num)
2268                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2269                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2270                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2271                     ost->frame_rate = ost->enc->supported_framerates[idx];
2272                 }
2273                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2274                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2275                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2276                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2277                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2278                 }
2279                 for (j = 0; j < ost->forced_kf_count; j++)
2280                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2281                                                          AV_TIME_BASE_Q,
2282                                                          codec->time_base);
2283
2284 #if CONFIG_AVFILTER
2285                 if (configure_video_filters(ist, ost)) {
2286                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2287                     exit(1);
2288                 }
2289 #endif
2290                 break;
2291             case AVMEDIA_TYPE_SUBTITLE:
2292                 break;
2293             default:
2294                 abort();
2295                 break;
2296             }
2297             /* two pass mode */
2298             if (codec->codec_id != CODEC_ID_H264 &&
2299                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2300                 char logfilename[1024];
2301                 FILE *f;
2302
2303                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2304                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2305                          i);
2306                 if (codec->flags & CODEC_FLAG_PASS2) {
2307                     char  *logbuffer;
2308                     size_t logbuffer_size;
2309                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2310                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2311                                logfilename);
2312                         exit_program(1);
2313                     }
2314                     codec->stats_in = logbuffer;
2315                 }
2316                 if (codec->flags & CODEC_FLAG_PASS1) {
2317                     f = fopen(logfilename, "wb");
2318                     if (!f) {
2319                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2320                                logfilename, strerror(errno));
2321                         exit_program(1);
2322                     }
2323                     ost->logfile = f;
2324                 }
2325             }
2326         }
2327         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2328             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2329             int size= codec->width * codec->height;
2330             bit_buffer_size= FFMAX(bit_buffer_size, 7*size + 10000);
2331         }
2332     }
2333
2334     if (!bit_buffer)
2335         bit_buffer = av_malloc(bit_buffer_size);
2336     if (!bit_buffer) {
2337         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2338                bit_buffer_size);
2339         return AVERROR(ENOMEM);
2340     }
2341
2342     /* open each encoder */
2343     for (i = 0; i < nb_output_streams; i++) {
2344         ost = &output_streams[i];
2345         if (ost->encoding_needed) {
2346             AVCodec *codec = ost->enc;
2347             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2348             if (!codec) {
2349                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2350                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2351                 ret = AVERROR(EINVAL);
2352                 goto dump_format;
2353             }
2354             if (dec->subtitle_header) {
2355                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2356                 if (!ost->st->codec->subtitle_header) {
2357                     ret = AVERROR(ENOMEM);
2358                     goto dump_format;
2359                 }
2360                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2361                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2362             }
2363             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2364                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2365                         ost->file_index, ost->index);
2366                 ret = AVERROR(EINVAL);
2367                 goto dump_format;
2368             }
2369             assert_codec_experimental(ost->st->codec, 1);
2370             assert_avoptions(ost->opts);
2371             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2372                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2373                                              " It takes bits/s as argument, not kbits/s\n");
2374             extra_size += ost->st->codec->extradata_size;
2375
2376             if (ost->st->codec->me_threshold)
2377                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2378         }
2379     }
2380
2381     /* init input streams */
2382     for (i = 0; i < nb_input_streams; i++)
2383         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2384             goto dump_format;
2385
2386     /* discard unused programs */
2387     for (i = 0; i < nb_input_files; i++) {
2388         InputFile *ifile = &input_files[i];
2389         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2390             AVProgram *p = ifile->ctx->programs[j];
2391             int discard  = AVDISCARD_ALL;
2392
2393             for (k = 0; k < p->nb_stream_indexes; k++)
2394                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2395                     discard = AVDISCARD_DEFAULT;
2396                     break;
2397                 }
2398             p->discard = discard;
2399         }
2400     }
2401
2402     /* open files and write file headers */
2403     for (i = 0; i < nb_output_files; i++) {
2404         os = output_files[i].ctx;
2405         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2406             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2407             ret = AVERROR(EINVAL);
2408             goto dump_format;
2409         }
2410 //        assert_avoptions(output_files[i].opts);
2411         if (strcmp(os->oformat->name, "rtp")) {
2412             want_sdp = 0;
2413         }
2414     }
2415
2416  dump_format:
2417     /* dump the file output parameters - cannot be done before in case
2418        of stream copy */
2419     for(i=0;i<nb_output_files;i++) {
2420         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2421     }
2422
2423     /* dump the stream mapping */
2424     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2425     for (i = 0; i < nb_output_streams; i++) {
2426         ost = &output_streams[i];
2427
2428         if (ost->attachment_filename) {
2429             /* an attached file */
2430             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2431                    ost->attachment_filename, ost->file_index, ost->index);
2432             continue;
2433         }
2434         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2435                input_streams[ost->source_index].file_index,
2436                input_streams[ost->source_index].st->index,
2437                ost->file_index,
2438                ost->index);
2439         if (ost->audio_channels_mapped) {
2440             av_log(NULL, AV_LOG_INFO, " [ch:");
2441             for (j = 0; j < ost->audio_channels_mapped; j++)
2442                 if (ost->audio_channels_map[j] == -1)
2443                     av_log(NULL, AV_LOG_INFO, " M");
2444                 else
2445                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2446             av_log(NULL, AV_LOG_INFO, "]");
2447         }
2448         if (ost->sync_ist != &input_streams[ost->source_index])
2449             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2450                    ost->sync_ist->file_index,
2451                    ost->sync_ist->st->index);
2452         if (ost->stream_copy)
2453             av_log(NULL, AV_LOG_INFO, " (copy)");
2454         else
2455             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2456                    input_streams[ost->source_index].dec->name : "?",
2457                    ost->enc ? ost->enc->name : "?");
2458         av_log(NULL, AV_LOG_INFO, "\n");
2459     }
2460
2461     if (ret) {
2462         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2463         return ret;
2464     }
2465
2466     if (want_sdp) {
2467         print_sdp(output_files, nb_output_files);
2468     }
2469
2470     return 0;
2471 }
2472
2473 /*
2474  * The following code is the main loop of the file converter
2475  */
2476 static int transcode(OutputFile *output_files, int nb_output_files,
2477                      InputFile  *input_files,  int nb_input_files)
2478 {
2479     int ret, i;
2480     AVFormatContext *is, *os;
2481     OutputStream *ost;
2482     InputStream *ist;
2483     uint8_t *no_packet;
2484     int no_packet_count=0;
2485     int64_t timer_start;
2486     int key;
2487
2488     if (!(no_packet = av_mallocz(nb_input_files)))
2489         exit_program(1);
2490
2491     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2492     if (ret < 0)
2493         goto fail;
2494
2495     if (!using_stdin) {
2496         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2497         avio_set_interrupt_cb(decode_interrupt_cb);
2498     }
2499
2500     timer_start = av_gettime();
2501
2502     for(; received_sigterm == 0;) {
2503         int file_index, ist_index;
2504         AVPacket pkt;
2505         int64_t ipts_min;
2506         double opts_min;
2507         int64_t cur_time= av_gettime();
2508
2509         ipts_min= INT64_MAX;
2510         opts_min= 1e100;
2511         /* if 'q' pressed, exits */
2512         if (!using_stdin) {
2513             static int64_t last_time;
2514             if (received_nb_signals)
2515                 break;
2516             /* read_key() returns 0 on EOF */
2517             if(cur_time - last_time >= 100000 && !run_as_daemon){
2518                 key =  read_key();
2519                 last_time = cur_time;
2520             }else
2521                 key = -1;
2522             if (key == 'q')
2523                 break;
2524             if (key == '+') av_log_set_level(av_log_get_level()+10);
2525             if (key == '-') av_log_set_level(av_log_get_level()-10);
2526             if (key == 's') qp_hist     ^= 1;
2527             if (key == 'h'){
2528                 if (do_hex_dump){
2529                     do_hex_dump = do_pkt_dump = 0;
2530                 } else if(do_pkt_dump){
2531                     do_hex_dump = 1;
2532                 } else
2533                     do_pkt_dump = 1;
2534                 av_log_set_level(AV_LOG_DEBUG);
2535             }
2536 #if CONFIG_AVFILTER
2537             if (key == 'c' || key == 'C'){
2538                 char buf[4096], target[64], command[256], arg[256] = {0};
2539                 double time;
2540                 int k, n = 0;
2541                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2542                 i = 0;
2543                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2544                     if (k > 0)
2545                         buf[i++] = k;
2546                 buf[i] = 0;
2547                 if (k > 0 &&
2548                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2549                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2550                            target, time, command, arg);
2551                     for (i = 0; i < nb_output_streams; i++) {
2552                         ost = &output_streams[i];
2553                         if (ost->graph) {
2554                             if (time < 0) {
2555                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2556                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2557                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2558                             } else {
2559                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2560                             }
2561                         }
2562                     }
2563                 } else {
2564                     av_log(NULL, AV_LOG_ERROR,
2565                            "Parse error, at least 3 arguments were expected, "
2566                            "only %d given in string '%s'\n", n, buf);
2567                 }
2568             }
2569 #endif
2570             if (key == 'd' || key == 'D'){
2571                 int debug=0;
2572                 if(key == 'D') {
2573                     debug = input_streams[0].st->codec->debug<<1;
2574                     if(!debug) debug = 1;
2575                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2576                         debug += debug;
2577                 }else
2578                     if(scanf("%d", &debug)!=1)
2579                         fprintf(stderr,"error parsing debug value\n");
2580                 for(i=0;i<nb_input_streams;i++) {
2581                     input_streams[i].st->codec->debug = debug;
2582                 }
2583                 for(i=0;i<nb_output_streams;i++) {
2584                     ost = &output_streams[i];
2585                     ost->st->codec->debug = debug;
2586                 }
2587                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2588                 fprintf(stderr,"debug=%d\n", debug);
2589             }
2590             if (key == '?'){
2591                 fprintf(stderr, "key    function\n"
2592                                 "?      show this help\n"
2593                                 "+      increase verbosity\n"
2594                                 "-      decrease verbosity\n"
2595                                 "c      Send command to filtergraph\n"
2596                                 "D      cycle through available debug modes\n"
2597                                 "h      dump packets/hex press to cycle through the 3 states\n"
2598                                 "q      quit\n"
2599                                 "s      Show QP histogram\n"
2600                 );
2601             }
2602         }
2603
2604         /* select the stream that we must read now by looking at the
2605            smallest output pts */
2606         file_index = -1;
2607         for (i = 0; i < nb_output_streams; i++) {
2608             OutputFile *of;
2609             int64_t ipts;
2610             double  opts;
2611             ost = &output_streams[i];
2612             of = &output_files[ost->file_index];
2613             os = output_files[ost->file_index].ctx;
2614             ist = &input_streams[ost->source_index];
2615             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2616                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2617                 continue;
2618             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2619             ipts = ist->pts;
2620             if (!input_files[ist->file_index].eof_reached){
2621                 if(ipts < ipts_min) {
2622                     ipts_min = ipts;
2623                     if(input_sync ) file_index = ist->file_index;
2624                 }
2625                 if(opts < opts_min) {
2626                     opts_min = opts;
2627                     if(!input_sync) file_index = ist->file_index;
2628                 }
2629             }
2630             if (ost->frame_number >= ost->max_frames) {
2631                 int j;
2632                 for (j = 0; j < of->ctx->nb_streams; j++)
2633                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2634                 continue;
2635             }
2636         }
2637         /* if none, if is finished */
2638         if (file_index < 0) {
2639             if(no_packet_count){
2640                 no_packet_count=0;
2641                 memset(no_packet, 0, nb_input_files);
2642                 usleep(10000);
2643                 continue;
2644             }
2645             break;
2646         }
2647
2648         /* read a frame from it and output it in the fifo */
2649         is = input_files[file_index].ctx;
2650         ret= av_read_frame(is, &pkt);
2651         if(ret == AVERROR(EAGAIN)){
2652             no_packet[file_index]=1;
2653             no_packet_count++;
2654             continue;
2655         }
2656         if (ret < 0) {
2657             input_files[file_index].eof_reached = 1;
2658             if (opt_shortest)
2659                 break;
2660             else
2661                 continue;
2662         }
2663
2664         no_packet_count=0;
2665         memset(no_packet, 0, nb_input_files);
2666
2667         if (do_pkt_dump) {
2668             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2669                              is->streams[pkt.stream_index]);
2670         }
2671         /* the following test is needed in case new streams appear
2672            dynamically in stream : we ignore them */
2673         if (pkt.stream_index >= input_files[file_index].nb_streams)
2674             goto discard_packet;
2675         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2676         ist = &input_streams[ist_index];
2677         if (ist->discard)
2678             goto discard_packet;
2679
2680         if (pkt.dts != AV_NOPTS_VALUE)
2681             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2682         if (pkt.pts != AV_NOPTS_VALUE)
2683             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2684
2685         if(pkt.pts != AV_NOPTS_VALUE)
2686             pkt.pts *= ist->ts_scale;
2687         if(pkt.dts != AV_NOPTS_VALUE)
2688             pkt.dts *= ist->ts_scale;
2689
2690 //        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);
2691         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2692             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2693             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2694             int64_t delta= pkt_dts - ist->next_pts;
2695             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2696                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2697                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2698                 pkt_dts+1<ist->pts)&& !copy_ts){
2699                 input_files[ist->file_index].ts_offset -= delta;
2700                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2701                        delta, input_files[ist->file_index].ts_offset);
2702                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2703                 if(pkt.pts != AV_NOPTS_VALUE)
2704                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2705             }
2706         }
2707
2708         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2709         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2710
2711             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2712                    ist->file_index, ist->st->index);
2713             if (exit_on_error)
2714                 exit_program(1);
2715             av_free_packet(&pkt);
2716             continue;
2717         }
2718
2719     discard_packet:
2720         av_free_packet(&pkt);
2721
2722         /* dump report by using the output first video and audio streams */
2723         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2724     }
2725
2726     /* at the end of stream, we must flush the decoder buffers */
2727     for (i = 0; i < nb_input_streams; i++) {
2728         ist = &input_streams[i];
2729         if (ist->decoding_needed) {
2730             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2731         }
2732     }
2733     flush_encoders(output_streams, nb_output_streams);
2734
2735     term_exit();
2736
2737     /* write the trailer if needed and close file */
2738     for(i=0;i<nb_output_files;i++) {
2739         os = output_files[i].ctx;
2740         av_write_trailer(os);
2741     }
2742
2743     /* dump report by using the first video and audio streams */
2744     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2745
2746     /* close each encoder */
2747     for (i = 0; i < nb_output_streams; i++) {
2748         ost = &output_streams[i];
2749         if (ost->encoding_needed) {
2750             av_freep(&ost->st->codec->stats_in);
2751             avcodec_close(ost->st->codec);
2752         }
2753 #if CONFIG_AVFILTER
2754         avfilter_graph_free(&ost->graph);
2755 #endif
2756     }
2757
2758     /* close each decoder */
2759     for (i = 0; i < nb_input_streams; i++) {
2760         ist = &input_streams[i];
2761         if (ist->decoding_needed) {
2762             avcodec_close(ist->st->codec);
2763         }
2764     }
2765
2766     /* finished ! */
2767     ret = 0;
2768
2769  fail:
2770     av_freep(&bit_buffer);
2771     av_freep(&no_packet);
2772
2773     if (output_streams) {
2774         for (i = 0; i < nb_output_streams; i++) {
2775             ost = &output_streams[i];
2776             if (ost) {
2777                 if (ost->stream_copy)
2778                     av_freep(&ost->st->codec->extradata);
2779                 if (ost->logfile) {
2780                     fclose(ost->logfile);
2781                     ost->logfile = NULL;
2782                 }
2783                 av_fifo_free(ost->fifo); /* works even if fifo is not
2784                                              initialized but set to zero */
2785                 av_freep(&ost->st->codec->subtitle_header);
2786                 av_free(ost->resample_frame.data[0]);
2787                 av_free(ost->forced_kf_pts);
2788                 if (ost->video_resample)
2789                     sws_freeContext(ost->img_resample_ctx);
2790                 swr_free(&ost->swr);
2791                 av_dict_free(&ost->opts);
2792             }
2793         }
2794     }
2795     return ret;
2796 }
2797
2798 static int opt_frame_crop(const char *opt, const char *arg)
2799 {
2800     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2801     return AVERROR(EINVAL);
2802 }
2803
2804 static int opt_pad(const char *opt, const char *arg)
2805 {
2806     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2807     return -1;
2808 }
2809
2810 static double parse_frame_aspect_ratio(const char *arg)
2811 {
2812     int x = 0, y = 0;
2813     double ar = 0;
2814     const char *p;
2815     char *end;
2816
2817     p = strchr(arg, ':');
2818     if (p) {
2819         x = strtol(arg, &end, 10);
2820         if (end == p)
2821             y = strtol(end+1, &end, 10);
2822         if (x > 0 && y > 0)
2823             ar = (double)x / (double)y;
2824     } else
2825         ar = strtod(arg, NULL);
2826
2827     if (!ar) {
2828         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2829         exit_program(1);
2830     }
2831     return ar;
2832 }
2833
2834 static int opt_video_channel(const char *opt, const char *arg)
2835 {
2836     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2837     return opt_default("channel", arg);
2838 }
2839
2840 static int opt_video_standard(const char *opt, const char *arg)
2841 {
2842     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2843     return opt_default("standard", arg);
2844 }
2845
2846 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2847 {
2848     audio_codec_name = arg;
2849     return parse_option(o, "codec:a", arg, options);
2850 }
2851
2852 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2853 {
2854     video_codec_name = arg;
2855     return parse_option(o, "codec:v", arg, options);
2856 }
2857
2858 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2859 {
2860     subtitle_codec_name = arg;
2861     return parse_option(o, "codec:s", arg, options);
2862 }
2863
2864 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2865 {
2866     return parse_option(o, "codec:d", arg, options);
2867 }
2868
2869 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2870 {
2871     StreamMap *m = NULL;
2872     int i, negative = 0, file_idx;
2873     int sync_file_idx = -1, sync_stream_idx;
2874     char *p, *sync;
2875     char *map;
2876
2877     if (*arg == '-') {
2878         negative = 1;
2879         arg++;
2880     }
2881     map = av_strdup(arg);
2882
2883     /* parse sync stream first, just pick first matching stream */
2884     if (sync = strchr(map, ',')) {
2885         *sync = 0;
2886         sync_file_idx = strtol(sync + 1, &sync, 0);
2887         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2888             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2889             exit_program(1);
2890         }
2891         if (*sync)
2892             sync++;
2893         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2894             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2895                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2896                 sync_stream_idx = i;
2897                 break;
2898             }
2899         if (i == input_files[sync_file_idx].nb_streams) {
2900             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2901                                        "match any streams.\n", arg);
2902             exit_program(1);
2903         }
2904     }
2905
2906
2907     file_idx = strtol(map, &p, 0);
2908     if (file_idx >= nb_input_files || file_idx < 0) {
2909         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2910         exit_program(1);
2911     }
2912     if (negative)
2913         /* disable some already defined maps */
2914         for (i = 0; i < o->nb_stream_maps; i++) {
2915             m = &o->stream_maps[i];
2916             if (file_idx == m->file_index &&
2917                 check_stream_specifier(input_files[m->file_index].ctx,
2918                                        input_files[m->file_index].ctx->streams[m->stream_index],
2919                                        *p == ':' ? p + 1 : p) > 0)
2920                 m->disabled = 1;
2921         }
2922     else
2923         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2924             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2925                         *p == ':' ? p + 1 : p) <= 0)
2926                 continue;
2927             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2928                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2929             m = &o->stream_maps[o->nb_stream_maps - 1];
2930
2931             m->file_index   = file_idx;
2932             m->stream_index = i;
2933
2934             if (sync_file_idx >= 0) {
2935                 m->sync_file_index   = sync_file_idx;
2936                 m->sync_stream_index = sync_stream_idx;
2937             } else {
2938                 m->sync_file_index   = file_idx;
2939                 m->sync_stream_index = i;
2940             }
2941         }
2942
2943     if (!m) {
2944         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2945         exit_program(1);
2946     }
2947
2948     av_freep(&map);
2949     return 0;
2950 }
2951
2952 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2953 {
2954     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2955                                 &o->nb_attachments, o->nb_attachments + 1);
2956     o->attachments[o->nb_attachments - 1] = arg;
2957     return 0;
2958 }
2959
2960 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
2961 {
2962     int n;
2963     AVStream *st;
2964     AudioChannelMap *m;
2965
2966     o->audio_channel_maps =
2967         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
2968                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
2969     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
2970
2971     /* muted channel syntax */
2972     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
2973     if ((n == 1 || n == 3) && m->channel_idx == -1) {
2974         m->file_idx = m->stream_idx = -1;
2975         if (n == 1)
2976             m->ofile_idx = m->ostream_idx = -1;
2977         return 0;
2978     }
2979
2980     /* normal syntax */
2981     n = sscanf(arg, "%d.%d.%d:%d.%d",
2982                &m->file_idx,  &m->stream_idx, &m->channel_idx,
2983                &m->ofile_idx, &m->ostream_idx);
2984
2985     if (n != 3 && n != 5) {
2986         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
2987                "[file.stream.channel|-1][:syncfile:syncstream]\n");
2988         exit_program(1);
2989     }
2990
2991     if (n != 5) // only file.stream.channel specified
2992         m->ofile_idx = m->ostream_idx = -1;
2993
2994     /* check input */
2995     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
2996         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
2997                m->file_idx);
2998         exit_program(1);
2999     }
3000     if (m->stream_idx < 0 ||
3001         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3002         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3003                m->file_idx, m->stream_idx);
3004         exit_program(1);
3005     }
3006     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3007     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3008         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3009                m->file_idx, m->stream_idx);
3010         exit_program(1);
3011     }
3012     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3013         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3014                m->file_idx, m->stream_idx, m->channel_idx);
3015         exit_program(1);
3016     }
3017     return 0;
3018 }
3019
3020 static void parse_meta_type(char *arg, char *type, int *index)
3021 {
3022     if (*arg) {
3023         *type = *arg;
3024         switch (*arg) {
3025         case 'g':
3026             break;
3027         case 's':
3028         case 'c':
3029         case 'p':
3030             if (*(++arg) == ':')
3031                 *index = strtol(++arg, NULL, 0);
3032             break;
3033         default:
3034             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3035             exit_program(1);
3036         }
3037     } else
3038         *type = 'g';
3039 }
3040
3041 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3042 {
3043     MetadataMap *m, *m1;
3044     char *p;
3045
3046     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3047                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3048
3049     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3050     m->file = strtol(arg, &p, 0);
3051     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3052
3053     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3054     if (p = strchr(opt, ':'))
3055         parse_meta_type(p + 1, &m1->type, &m1->index);
3056     else
3057         m1->type = 'g';
3058
3059     if (m->type == 'g' || m1->type == 'g')
3060         o->metadata_global_manual = 1;
3061     if (m->type == 's' || m1->type == 's')
3062         o->metadata_streams_manual = 1;
3063     if (m->type == 'c' || m1->type == 'c')
3064         o->metadata_chapters_manual = 1;
3065
3066     return 0;
3067 }
3068
3069 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3070 {
3071     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3072                     "Use -map_metadata instead.\n");
3073     return opt_map_metadata(o, opt, arg);
3074 }
3075
3076 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3077 {
3078     char buf[128];
3079     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3080     struct tm time = *gmtime((time_t*)&recording_timestamp);
3081     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3082     parse_option(o, "metadata", buf, options);
3083
3084     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3085                                  "tag instead.\n", opt);
3086     return 0;
3087 }
3088
3089 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3090 {
3091     const char *codec_string = encoder ? "encoder" : "decoder";
3092     AVCodec *codec;
3093
3094     codec = encoder ?
3095         avcodec_find_encoder_by_name(name) :
3096         avcodec_find_decoder_by_name(name);
3097     if(!codec) {
3098         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3099         exit_program(1);
3100     }
3101     if(codec->type != type) {
3102         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3103         exit_program(1);
3104     }
3105     return codec;
3106 }
3107
3108 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3109 {
3110     char *codec_name = NULL;
3111
3112     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3113     if (codec_name) {
3114         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3115         st->codec->codec_id = codec->id;
3116         return codec;
3117     } else
3118         return avcodec_find_decoder(st->codec->codec_id);
3119 }
3120
3121 /**
3122  * Add all the streams from the given input file to the global
3123  * list of input streams.
3124  */
3125 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3126 {
3127     int i, rfps, rfps_base;
3128     char *next, *codec_tag = NULL;
3129
3130     for (i = 0; i < ic->nb_streams; i++) {
3131         AVStream *st = ic->streams[i];
3132         AVCodecContext *dec = st->codec;
3133         InputStream *ist;
3134
3135         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3136         ist = &input_streams[nb_input_streams - 1];
3137         ist->st = st;
3138         ist->file_index = nb_input_files;
3139         ist->discard = 1;
3140         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3141
3142         ist->ts_scale = 1.0;
3143         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3144
3145         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3146         if (codec_tag) {
3147             uint32_t tag = strtol(codec_tag, &next, 0);
3148             if (*next)
3149                 tag = AV_RL32(codec_tag);
3150             st->codec->codec_tag = tag;
3151         }
3152
3153         ist->dec = choose_decoder(o, ic, st);
3154
3155         switch (dec->codec_type) {
3156         case AVMEDIA_TYPE_AUDIO:
3157             if(!ist->dec)
3158                 ist->dec = avcodec_find_decoder(dec->codec_id);
3159             if(o->audio_disable)
3160                 st->discard= AVDISCARD_ALL;
3161             break;
3162         case AVMEDIA_TYPE_VIDEO:
3163             if(!ist->dec)
3164                 ist->dec = avcodec_find_decoder(dec->codec_id);
3165             rfps      = ic->streams[i]->r_frame_rate.num;
3166             rfps_base = ic->streams[i]->r_frame_rate.den;
3167             if (dec->lowres) {
3168                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3169             }
3170
3171             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3172
3173                 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",
3174                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3175                        (float)rfps / rfps_base, rfps, rfps_base);
3176             }
3177
3178             if (o->video_disable)
3179                 st->discard= AVDISCARD_ALL;
3180             else if(video_discard)
3181                 st->discard= video_discard;
3182             break;
3183         case AVMEDIA_TYPE_DATA:
3184             break;
3185         case AVMEDIA_TYPE_SUBTITLE:
3186             if(!ist->dec)
3187                 ist->dec = avcodec_find_decoder(dec->codec_id);
3188             if(o->subtitle_disable)
3189                 st->discard = AVDISCARD_ALL;
3190             break;
3191         case AVMEDIA_TYPE_ATTACHMENT:
3192         case AVMEDIA_TYPE_UNKNOWN:
3193             break;
3194         default:
3195             abort();
3196         }
3197     }
3198 }
3199
3200 static void assert_file_overwrite(const char *filename)
3201 {
3202     if (!file_overwrite &&
3203         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3204          av_strstart(filename, "file:", NULL))) {
3205         if (avio_check(filename, 0) == 0) {
3206             if (!using_stdin) {
3207                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3208                 fflush(stderr);
3209                 term_exit();
3210                 if (!read_yesno()) {
3211                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3212                     exit_program(1);
3213                 }
3214                 term_init();
3215             }
3216             else {
3217                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3218                 exit_program(1);
3219             }
3220         }
3221     }
3222 }
3223
3224 static void dump_attachment(AVStream *st, const char *filename)
3225 {
3226     int ret;
3227     AVIOContext *out = NULL;
3228     AVDictionaryEntry *e;
3229
3230     if (!st->codec->extradata_size) {
3231         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3232                nb_input_files - 1, st->index);
3233         return;
3234     }
3235     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3236         filename = e->value;
3237     if (!*filename) {
3238         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3239                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3240         exit_program(1);
3241     }
3242
3243     assert_file_overwrite(filename);
3244
3245     if ((ret = avio_open (&out, filename, AVIO_FLAG_WRITE)) < 0) {
3246         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3247                filename);
3248         exit_program(1);
3249     }
3250
3251     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3252     avio_flush(out);
3253     avio_close(out);
3254 }
3255
3256 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3257 {
3258     AVFormatContext *ic;
3259     AVInputFormat *file_iformat = NULL;
3260     int err, i, ret;
3261     int64_t timestamp;
3262     uint8_t buf[128];
3263     AVDictionary **opts;
3264     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3265
3266     if (o->format) {
3267         if (!(file_iformat = av_find_input_format(o->format))) {
3268             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3269             exit_program(1);
3270         }
3271     }
3272
3273     if (!strcmp(filename, "-"))
3274         filename = "pipe:";
3275
3276     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3277                     !strcmp(filename, "/dev/stdin");
3278
3279     /* get default parameters from command line */
3280     ic = avformat_alloc_context();
3281     if (!ic) {
3282         print_error(filename, AVERROR(ENOMEM));
3283         exit_program(1);
3284     }
3285     if (o->nb_audio_sample_rate) {
3286         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3287         av_dict_set(&format_opts, "sample_rate", buf, 0);
3288     }
3289     if (o->nb_audio_channels) {
3290         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3291         av_dict_set(&format_opts, "channels", buf, 0);
3292     }
3293     if (o->nb_frame_rates) {
3294         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3295     }
3296     if (o->nb_frame_sizes) {
3297         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3298     }
3299     if (o->nb_frame_pix_fmts)
3300         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3301
3302     ic->video_codec_id   = video_codec_name ?
3303         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3304     ic->audio_codec_id   = audio_codec_name ?
3305         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3306     ic->subtitle_codec_id= subtitle_codec_name ?
3307         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3308     ic->flags |= AVFMT_FLAG_NONBLOCK;
3309
3310     if (loop_input) {
3311         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3312         ic->loop_input = loop_input;
3313     }
3314
3315     /* open the input file with generic libav function */
3316     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3317     if (err < 0) {
3318         print_error(filename, err);
3319         exit_program(1);
3320     }
3321     assert_avoptions(format_opts);
3322
3323     /* apply forced codec ids */
3324     for (i = 0; i < ic->nb_streams; i++)
3325         choose_decoder(o, ic, ic->streams[i]);
3326
3327     /* Set AVCodecContext options for avformat_find_stream_info */
3328     opts = setup_find_stream_info_opts(ic, codec_opts);
3329     orig_nb_streams = ic->nb_streams;
3330
3331     /* If not enough info to get the stream parameters, we decode the
3332        first frames to get it. (used in mpeg case for example) */
3333     ret = avformat_find_stream_info(ic, opts);
3334     if (ret < 0) {
3335         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3336         av_close_input_file(ic);
3337         exit_program(1);
3338     }
3339
3340     timestamp = o->start_time;
3341     /* add the stream start time */
3342     if (ic->start_time != AV_NOPTS_VALUE)
3343         timestamp += ic->start_time;
3344
3345     /* if seeking requested, we execute it */
3346     if (o->start_time != 0) {
3347         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3348         if (ret < 0) {
3349             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3350                    filename, (double)timestamp / AV_TIME_BASE);
3351         }
3352     }
3353
3354     /* update the current parameters so that they match the one of the input stream */
3355     add_input_streams(o, ic);
3356
3357     /* dump the file content */
3358     av_dump_format(ic, nb_input_files, filename, 0);
3359
3360     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3361     input_files[nb_input_files - 1].ctx        = ic;
3362     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3363     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3364     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3365     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3366
3367     for (i = 0; i < o->nb_dump_attachment; i++) {
3368         int j;
3369
3370         for (j = 0; j < ic->nb_streams; j++) {
3371             AVStream *st = ic->streams[j];
3372
3373             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3374                 dump_attachment(st, o->dump_attachment[i].u.str);
3375         }
3376     }
3377
3378     for (i = 0; i < orig_nb_streams; i++)
3379         av_dict_free(&opts[i]);
3380     av_freep(&opts);
3381
3382     reset_options(o, 1);
3383     return 0;
3384 }
3385
3386 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3387 {
3388     char *p;
3389     int n = 1, i;
3390
3391     for (p = kf; *p; p++)
3392         if (*p == ',')
3393             n++;
3394     ost->forced_kf_count = n;
3395     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3396     if (!ost->forced_kf_pts) {
3397         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3398         exit_program(1);
3399     }
3400     for (i = 0; i < n; i++) {
3401         p = i ? strchr(p, ',') + 1 : kf;
3402         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3403     }
3404 }
3405
3406 static uint8_t *get_line(AVIOContext *s)
3407 {
3408     AVIOContext *line;
3409     uint8_t *buf;
3410     char c;
3411
3412     if (avio_open_dyn_buf(&line) < 0) {
3413         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3414         exit_program(1);
3415     }
3416
3417     while ((c = avio_r8(s)) && c != '\n')
3418         avio_w8(line, c);
3419     avio_w8(line, 0);
3420     avio_close_dyn_buf(line, &buf);
3421
3422     return buf;
3423 }
3424
3425 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3426 {
3427     int i, ret = 1;
3428     char filename[1000];
3429     const char *base[3] = { getenv("AVCONV_DATADIR"),
3430                             getenv("HOME"),
3431                             AVCONV_DATADIR,
3432                             };
3433
3434     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3435         if (!base[i])
3436             continue;
3437         if (codec_name) {
3438             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3439                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3440             ret = avio_open(s, filename, AVIO_FLAG_READ);
3441         }
3442         if (ret) {
3443             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3444                      i != 1 ? "" : "/.avconv", preset_name);
3445             ret = avio_open(s, filename, AVIO_FLAG_READ);
3446         }
3447     }
3448     return ret;
3449 }
3450
3451 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3452 {
3453     char *codec_name = NULL;
3454
3455     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3456     if (!codec_name) {
3457         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3458                                                   NULL, ost->st->codec->codec_type);
3459         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3460     } else if (!strcmp(codec_name, "copy"))
3461         ost->stream_copy = 1;
3462     else {
3463         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3464         ost->st->codec->codec_id = ost->enc->id;
3465     }
3466 }
3467
3468 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3469 {
3470     OutputStream *ost;
3471     AVStream *st = avformat_new_stream(oc, NULL);
3472     int idx      = oc->nb_streams - 1, ret = 0;
3473     char *bsf = NULL, *next, *codec_tag = NULL;
3474     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3475     double qscale = -1;
3476     char *buf = NULL, *arg = NULL, *preset = NULL;
3477     AVIOContext *s = NULL;
3478
3479     if (!st) {
3480         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3481         exit_program(1);
3482     }
3483
3484     if (oc->nb_streams - 1 < o->nb_streamid_map)
3485         st->id = o->streamid_map[oc->nb_streams - 1];
3486
3487     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3488                                 nb_output_streams + 1);
3489     ost = &output_streams[nb_output_streams - 1];
3490     ost->file_index = nb_output_files;
3491     ost->index = idx;
3492     ost->st    = st;
3493     st->codec->codec_type = type;
3494     choose_encoder(o, oc, ost);
3495     if (ost->enc) {
3496         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3497     }
3498
3499     avcodec_get_context_defaults3(st->codec, ost->enc);
3500     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3501
3502     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3503     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3504         do  {
3505             buf = get_line(s);
3506             if (!buf[0] || buf[0] == '#') {
3507                 av_free(buf);
3508                 continue;
3509             }
3510             if (!(arg = strchr(buf, '='))) {
3511                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3512                 exit_program(1);
3513             }
3514             *arg++ = 0;
3515             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3516             av_free(buf);
3517         } while (!s->eof_reached);
3518         avio_close(s);
3519     }
3520     if (ret) {
3521         av_log(NULL, AV_LOG_FATAL,
3522                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3523                preset, ost->file_index, ost->index);
3524         exit_program(1);
3525     }
3526
3527     ost->max_frames = INT64_MAX;
3528     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3529
3530     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3531     while (bsf) {
3532         if (next = strchr(bsf, ','))
3533             *next++ = 0;
3534         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3535             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3536             exit_program(1);
3537         }
3538         if (bsfc_prev)
3539             bsfc_prev->next = bsfc;
3540         else
3541             ost->bitstream_filters = bsfc;
3542
3543         bsfc_prev = bsfc;
3544         bsf       = next;
3545     }
3546
3547     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3548     if (codec_tag) {
3549         uint32_t tag = strtol(codec_tag, &next, 0);
3550         if (*next)
3551             tag = AV_RL32(codec_tag);
3552         st->codec->codec_tag = tag;
3553     }
3554
3555     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3556     if (qscale >= 0 || same_quant) {
3557         st->codec->flags |= CODEC_FLAG_QSCALE;
3558         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3559     }
3560
3561     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3562         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3563
3564     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3565     return ost;
3566 }
3567
3568 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3569 {
3570     int i;
3571     const char *p = str;
3572     for(i = 0;; i++) {
3573         dest[i] = atoi(p);
3574         if(i == 63)
3575             break;
3576         p = strchr(p, ',');
3577         if(!p) {
3578             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3579             exit_program(1);
3580         }
3581         p++;
3582     }
3583 }
3584
3585 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3586 {
3587     AVStream *st;
3588     OutputStream *ost;
3589     AVCodecContext *video_enc;
3590
3591     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3592     st  = ost->st;
3593     video_enc = st->codec;
3594
3595     if (!ost->stream_copy) {
3596         const char *p = NULL;
3597         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3598         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3599         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3600         int i;
3601
3602         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3603         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3604             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3605             exit_program(1);
3606         }
3607
3608         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3609         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3610             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3611             exit_program(1);
3612         }
3613
3614         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3615         if (frame_aspect_ratio)
3616             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3617
3618         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3619         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3620         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3621             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3622             exit_program(1);
3623         }
3624         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3625
3626         if (intra_only)
3627             video_enc->gop_size = 0;
3628         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3629         if (intra_matrix) {
3630             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3631                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3632                 exit_program(1);
3633             }
3634             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3635         }
3636         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3637         if (inter_matrix) {
3638             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3639                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3640                 exit_program(1);
3641             }
3642             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3643         }
3644
3645         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3646         for(i=0; p; i++){
3647             int start, end, q;
3648             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3649             if(e!=3){
3650                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3651                 exit_program(1);
3652             }
3653             /* FIXME realloc failure */
3654             video_enc->rc_override=
3655                 av_realloc(video_enc->rc_override,
3656                            sizeof(RcOverride)*(i+1));
3657             video_enc->rc_override[i].start_frame= start;
3658             video_enc->rc_override[i].end_frame  = end;
3659             if(q>0){
3660                 video_enc->rc_override[i].qscale= q;
3661                 video_enc->rc_override[i].quality_factor= 1.0;
3662             }
3663             else{
3664                 video_enc->rc_override[i].qscale= 0;
3665                 video_enc->rc_override[i].quality_factor= -q/100.0;
3666             }
3667             p= strchr(p, '/');
3668             if(p) p++;
3669         }
3670         video_enc->rc_override_count=i;
3671         if (!video_enc->rc_initial_buffer_occupancy)
3672             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3673         video_enc->intra_dc_precision= intra_dc_precision - 8;
3674
3675         if (do_psnr)
3676             video_enc->flags|= CODEC_FLAG_PSNR;
3677
3678         /* two pass mode */
3679         if (do_pass) {
3680             if (do_pass & 1) {
3681                 video_enc->flags |= CODEC_FLAG_PASS1;
3682             }
3683             if (do_pass & 2) {
3684                 video_enc->flags |= CODEC_FLAG_PASS2;
3685             }
3686         }
3687
3688         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3689         if (forced_key_frames)
3690             parse_forced_key_frames(forced_key_frames, ost);
3691
3692         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3693
3694         ost->top_field_first = -1;
3695         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3696
3697         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3698
3699 #if CONFIG_AVFILTER
3700         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3701         if (filters)
3702             ost->avfilter = av_strdup(filters);
3703 #endif
3704     }
3705
3706     return ost;
3707 }
3708
3709 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3710 {
3711     int n;
3712     AVStream *st;
3713     OutputStream *ost;
3714     AVCodecContext *audio_enc;
3715
3716     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3717     st  = ost->st;
3718
3719     audio_enc = st->codec;
3720     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3721
3722     if (!ost->stream_copy) {
3723         char *sample_fmt = NULL;
3724
3725         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3726
3727         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3728         if (sample_fmt &&
3729             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3730             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3731             exit_program(1);
3732         }
3733
3734         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3735
3736         ost->rematrix_volume=1.0;
3737         MATCH_PER_STREAM_OPT(rematrix_volume, f, ost->rematrix_volume, oc, st);
3738     }
3739
3740     /* check for channel mapping for this audio stream */
3741     for (n = 0; n < o->nb_audio_channel_maps; n++) {
3742         AudioChannelMap *map = &o->audio_channel_maps[n];
3743         InputStream *ist = &input_streams[ost->source_index];
3744         if ((map->channel_idx == -1 || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) &&
3745             (map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
3746             (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
3747             if (ost->audio_channels_mapped < FF_ARRAY_ELEMS(ost->audio_channels_map))
3748                 ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
3749             else
3750                 av_log(NULL, AV_LOG_FATAL, "Max channel mapping for output %d.%d reached\n",
3751                        ost->file_index, ost->st->index);
3752         }
3753     }
3754
3755     return ost;
3756 }
3757
3758 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3759 {
3760     OutputStream *ost;
3761
3762     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3763     if (!ost->stream_copy) {
3764         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3765         exit_program(1);
3766     }
3767
3768     return ost;
3769 }
3770
3771 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3772 {
3773     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3774     ost->stream_copy = 1;
3775     return ost;
3776 }
3777
3778 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3779 {
3780     AVStream *st;
3781     OutputStream *ost;
3782     AVCodecContext *subtitle_enc;
3783
3784     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3785     st  = ost->st;
3786     subtitle_enc = st->codec;
3787
3788     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3789
3790     return ost;
3791 }
3792
3793 /* arg format is "output-stream-index:streamid-value". */
3794 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3795 {
3796     int idx;
3797     char *p;
3798     char idx_str[16];
3799
3800     av_strlcpy(idx_str, arg, sizeof(idx_str));
3801     p = strchr(idx_str, ':');
3802     if (!p) {
3803         av_log(NULL, AV_LOG_FATAL,
3804                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3805                arg, opt);
3806         exit_program(1);
3807     }
3808     *p++ = '\0';
3809     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3810     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3811     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3812     return 0;
3813 }
3814
3815 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3816 {
3817     AVFormatContext *is = ifile->ctx;
3818     AVFormatContext *os = ofile->ctx;
3819     int i;
3820
3821     for (i = 0; i < is->nb_chapters; i++) {
3822         AVChapter *in_ch = is->chapters[i], *out_ch;
3823         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3824                                       AV_TIME_BASE_Q, in_ch->time_base);
3825         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3826                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3827
3828
3829         if (in_ch->end < ts_off)
3830             continue;
3831         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3832             break;
3833
3834         out_ch = av_mallocz(sizeof(AVChapter));
3835         if (!out_ch)
3836             return AVERROR(ENOMEM);
3837
3838         out_ch->id        = in_ch->id;
3839         out_ch->time_base = in_ch->time_base;
3840         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3841         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3842
3843         if (copy_metadata)
3844             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3845
3846         os->nb_chapters++;
3847         os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
3848         if (!os->chapters)
3849             return AVERROR(ENOMEM);
3850         os->chapters[os->nb_chapters - 1] = out_ch;
3851     }
3852     return 0;
3853 }
3854
3855 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3856 {
3857     int i, err;
3858     AVFormatContext *ic = NULL;
3859
3860     err = avformat_open_input(&ic, filename, NULL, NULL);
3861     if (err < 0)
3862         return err;
3863     /* copy stream format */
3864     for(i=0;i<ic->nb_streams;i++) {
3865         AVStream *st;
3866         OutputStream *ost;
3867         AVCodec *codec;
3868         AVCodecContext *avctx;
3869
3870         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3871         ost   = new_output_stream(o, s, codec->type);
3872         st    = ost->st;
3873         avctx = st->codec;
3874
3875         // FIXME: a more elegant solution is needed
3876         memcpy(st, ic->streams[i], sizeof(AVStream));
3877         st->info = av_malloc(sizeof(*st->info));
3878         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3879         st->codec= avctx;
3880         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3881
3882         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3883             choose_sample_fmt(st, codec);
3884         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3885             choose_pixel_fmt(st, codec);
3886     }
3887
3888     av_close_input_file(ic);
3889     return 0;
3890 }
3891
3892 static void opt_output_file(void *optctx, const char *filename)
3893 {
3894     OptionsContext *o = optctx;
3895     AVFormatContext *oc;
3896     int i, err;
3897     AVOutputFormat *file_oformat;
3898     OutputStream *ost;
3899     InputStream  *ist;
3900
3901     if (!strcmp(filename, "-"))
3902         filename = "pipe:";
3903
3904     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3905     if (!oc) {
3906         print_error(filename, err);
3907         exit_program(1);
3908     }
3909     file_oformat= oc->oformat;
3910
3911     if (!strcmp(file_oformat->name, "ffm") &&
3912         av_strstart(filename, "http:", NULL)) {
3913         int j;
3914         /* special case for files sent to ffserver: we get the stream
3915            parameters from ffserver */
3916         int err = read_ffserver_streams(o, oc, filename);
3917         if (err < 0) {
3918             print_error(filename, err);
3919             exit_program(1);
3920         }
3921         for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
3922             ost = &output_streams[j];
3923             for (i = 0; i < nb_input_streams; i++) {
3924                 ist = &input_streams[i];
3925                 if(ist->st->codec->codec_type == ost->st->codec->codec_type){
3926                     ost->sync_ist= ist;
3927                     ost->source_index= i;
3928                     ist->discard = 0;
3929                     break;
3930                 }
3931             }
3932         }
3933     } else if (!o->nb_stream_maps) {
3934         /* pick the "best" stream of each type */
3935 #define NEW_STREAM(type, index)\
3936         if (index >= 0) {\
3937             ost = new_ ## type ## _stream(o, oc);\
3938             ost->source_index = index;\
3939             ost->sync_ist     = &input_streams[index];\
3940             input_streams[index].discard = 0;\
3941         }
3942
3943         /* video: highest resolution */
3944         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3945             int area = 0, idx = -1;
3946             for (i = 0; i < nb_input_streams; i++) {
3947                 ist = &input_streams[i];
3948                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3949                     ist->st->codec->width * ist->st->codec->height > area) {
3950                     area = ist->st->codec->width * ist->st->codec->height;
3951                     idx = i;
3952                 }
3953             }
3954             NEW_STREAM(video, idx);
3955         }
3956
3957         /* audio: most channels */
3958         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3959             int channels = 0, idx = -1;
3960             for (i = 0; i < nb_input_streams; i++) {
3961                 ist = &input_streams[i];
3962                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3963                     ist->st->codec->channels > channels) {
3964                     channels = ist->st->codec->channels;
3965                     idx = i;
3966                 }
3967             }
3968             NEW_STREAM(audio, idx);
3969         }
3970
3971         /* subtitles: pick first */
3972         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3973             for (i = 0; i < nb_input_streams; i++)
3974                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3975                     NEW_STREAM(subtitle, i);
3976                     break;
3977                 }
3978         }
3979         /* do something with data? */
3980     } else {
3981         for (i = 0; i < o->nb_stream_maps; i++) {
3982             StreamMap *map = &o->stream_maps[i];
3983
3984             if (map->disabled)
3985                 continue;
3986
3987             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3988             if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
3989                 continue;
3990             if(o->   audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
3991                 continue;
3992             if(o->   video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3993                 continue;
3994
3995             switch (ist->st->codec->codec_type) {
3996             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3997             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3998             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3999             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
4000             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
4001             default:
4002                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
4003                        map->file_index, map->stream_index);
4004                 exit_program(1);
4005             }
4006
4007             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
4008             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
4009                                            map->sync_stream_index];
4010             ist->discard = 0;
4011         }
4012     }
4013
4014     /* handle attached files */
4015     for (i = 0; i < o->nb_attachments; i++) {
4016         AVIOContext *pb;
4017         uint8_t *attachment;
4018         const char *p;
4019         int64_t len;
4020
4021         if ((err = avio_open(&pb, o->attachments[i], AVIO_FLAG_READ)) < 0) {
4022             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
4023                    o->attachments[i]);
4024             exit_program(1);
4025         }
4026         if ((len = avio_size(pb)) <= 0) {
4027             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
4028                    o->attachments[i]);
4029             exit_program(1);
4030         }
4031         if (!(attachment = av_malloc(len))) {
4032             av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
4033                    o->attachments[i]);
4034             exit_program(1);
4035         }
4036         avio_read(pb, attachment, len);
4037
4038         ost = new_attachment_stream(o, oc);
4039         ost->stream_copy               = 0;
4040         ost->source_index              = -1;
4041         ost->attachment_filename       = o->attachments[i];
4042         ost->st->codec->extradata      = attachment;
4043         ost->st->codec->extradata_size = len;
4044
4045         p = strrchr(o->attachments[i], '/');
4046         av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
4047         avio_close(pb);
4048     }
4049
4050     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
4051     output_files[nb_output_files - 1].ctx       = oc;
4052     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
4053     output_files[nb_output_files - 1].recording_time = o->recording_time;
4054     output_files[nb_output_files - 1].start_time     = o->start_time;
4055     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
4056     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
4057
4058     /* check filename in case of an image number is expected */
4059     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
4060         if (!av_filename_number_test(oc->filename)) {
4061             print_error(oc->filename, AVERROR(EINVAL));
4062             exit_program(1);
4063         }
4064     }
4065
4066     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
4067         /* test if it already exists to avoid loosing precious files */
4068         assert_file_overwrite(filename);
4069
4070         /* open the file */
4071         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
4072             print_error(filename, err);
4073             exit_program(1);
4074         }
4075     }
4076
4077     if (o->mux_preload) {
4078         uint8_t buf[64];
4079         snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
4080         av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
4081     }
4082     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
4083
4084     if (loop_output >= 0) {
4085         av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n");
4086         oc->loop_output = loop_output;
4087     }
4088
4089     /* copy chapters */
4090     if (o->chapters_input_file >= nb_input_files) {
4091         if (o->chapters_input_file == INT_MAX) {
4092             /* copy chapters from the first input file that has them*/
4093             o->chapters_input_file = -1;
4094             for (i = 0; i < nb_input_files; i++)
4095                 if (input_files[i].ctx->nb_chapters) {
4096                     o->chapters_input_file = i;
4097                     break;
4098                 }
4099         } else {
4100             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
4101                    o->chapters_input_file);
4102             exit_program(1);
4103         }
4104     }
4105     if (o->chapters_input_file >= 0)
4106         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
4107                       !o->metadata_chapters_manual);
4108
4109     /* copy metadata */
4110     for (i = 0; i < o->nb_meta_data_maps; i++) {
4111         AVFormatContext *files[2];
4112         AVDictionary    **meta[2];
4113         int j;
4114
4115 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4116         if ((index) < 0 || (index) >= (nb_elems)) {\
4117             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
4118                      (desc), (index));\
4119             exit_program(1);\
4120         }
4121
4122         int in_file_index = o->meta_data_maps[i][1].file;
4123         if (in_file_index < 0)
4124             continue;
4125         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
4126
4127         files[0] = oc;
4128         files[1] = input_files[in_file_index].ctx;
4129
4130         for (j = 0; j < 2; j++) {
4131             MetadataMap *map = &o->meta_data_maps[i][j];
4132
4133             switch (map->type) {
4134             case 'g':
4135                 meta[j] = &files[j]->metadata;
4136                 break;
4137             case 's':
4138                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
4139                 meta[j] = &files[j]->streams[map->index]->metadata;
4140                 break;
4141             case 'c':
4142                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
4143                 meta[j] = &files[j]->chapters[map->index]->metadata;
4144                 break;
4145             case 'p':
4146                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
4147                 meta[j] = &files[j]->programs[map->index]->metadata;
4148                 break;
4149             default:
4150                 abort();
4151             }
4152         }
4153
4154         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
4155     }
4156
4157     /* copy global metadata by default */
4158     if (!o->metadata_global_manual && nb_input_files){
4159         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
4160                      AV_DICT_DONT_OVERWRITE);
4161         if(o->recording_time != INT64_MAX)
4162             av_dict_set(&oc->metadata, "duration", NULL, 0);
4163     }
4164     if (!o->metadata_streams_manual)
4165         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
4166             InputStream *ist;
4167             if (output_streams[i].source_index < 0)         /* this is true e.g. for attached files */
4168                 continue;
4169             ist = &input_streams[output_streams[i].source_index];
4170             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
4171         }
4172
4173     /* process manually set metadata */
4174     for (i = 0; i < o->nb_metadata; i++) {
4175         AVDictionary **m;
4176         char type, *val;
4177         int index = 0;
4178
4179         val = strchr(o->metadata[i].u.str, '=');
4180         if (!val) {
4181             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
4182                    o->metadata[i].u.str);
4183             exit_program(1);
4184         }
4185         *val++ = 0;
4186
4187         parse_meta_type(o->metadata[i].specifier, &type, &index);
4188         switch (type) {
4189         case 'g':
4190             m = &oc->metadata;
4191             break;
4192         case 's':
4193             if (index < 0 || index >= oc->nb_streams) {
4194                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
4195                 exit_program(1);
4196             }
4197             m = &oc->streams[index]->metadata;
4198             break;
4199         case 'c':
4200             if (index < 0 || index >= oc->nb_chapters) {
4201                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
4202                 exit_program(1);
4203             }
4204             m = &oc->chapters[index]->metadata;
4205             break;
4206         default:
4207             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
4208             exit_program(1);
4209         }
4210
4211         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
4212     }
4213
4214     reset_options(o, 0);
4215 }
4216
4217 /* same option as mencoder */
4218 static int opt_pass(const char *opt, const char *arg)
4219 {
4220     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 3);
4221     return 0;
4222 }
4223
4224 static int64_t getutime(void)
4225 {
4226 #if HAVE_GETRUSAGE
4227     struct rusage rusage;
4228
4229     getrusage(RUSAGE_SELF, &rusage);
4230     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
4231 #elif HAVE_GETPROCESSTIMES
4232     HANDLE proc;
4233     FILETIME c, e, k, u;
4234     proc = GetCurrentProcess();
4235     GetProcessTimes(proc, &c, &e, &k, &u);
4236     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
4237 #else
4238     return av_gettime();
4239 #endif
4240 }
4241
4242 static int64_t getmaxrss(void)
4243 {
4244 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
4245     struct rusage rusage;
4246     getrusage(RUSAGE_SELF, &rusage);
4247     return (int64_t)rusage.ru_maxrss * 1024;
4248 #elif HAVE_GETPROCESSMEMORYINFO
4249     HANDLE proc;
4250     PROCESS_MEMORY_COUNTERS memcounters;
4251     proc = GetCurrentProcess();
4252     memcounters.cb = sizeof(memcounters);
4253     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
4254     return memcounters.PeakPagefileUsage;
4255 #else