g723_1dec: update to new API
[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 no_file_overwrite = 0;
135 static int do_benchmark = 0;
136 static int do_hex_dump = 0;
137 static int do_pkt_dump = 0;
138 static int do_psnr = 0;
139 static int do_pass = 0;
140 static const char *pass_logfilename_prefix;
141 static int video_sync_method= -1;
142 static int audio_sync_method= 0;
143 static float audio_drift_threshold= 0.1;
144 static int copy_ts= 0;
145 static int copy_tb= -1;
146 static int opt_shortest = 0;
147 static char *vstats_filename;
148 static FILE *vstats_file;
149
150 static int audio_volume = 256;
151
152 static int exit_on_error = 0;
153 static int using_stdin = 0;
154 static int run_as_daemon  = 0;
155 static volatile int received_nb_signals = 0;
156 static int64_t video_size = 0;
157 static int64_t audio_size = 0;
158 static int64_t extra_size = 0;
159 static int nb_frames_dup = 0;
160 static int nb_frames_drop = 0;
161 static int input_sync;
162
163 static float dts_delta_threshold = 10;
164
165 static int print_stats = 1;
166
167 static uint8_t *audio_buf;
168 static uint8_t *audio_out;
169 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
170
171 static void *samples;
172 static uint8_t *input_tmp= NULL;
173
174 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
175
176 typedef struct InputStream {
177     int file_index;
178     AVStream *st;
179     int discard;             /* true if stream data should be discarded */
180     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
181     AVCodec *dec;
182
183     int64_t       start;     /* time when read started */
184     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
185                                 is not defined */
186     int64_t       pts;       /* current pts */
187     double ts_scale;
188     int is_start;            /* is 1 at the start and after a discontinuity */
189     int showed_multi_packet_warning;
190     AVDictionary *opts;
191 } InputStream;
192
193 typedef struct InputFile {
194     AVFormatContext *ctx;
195     int eof_reached;      /* true if eof reached */
196     int ist_index;        /* index of first stream in input_streams */
197     int buffer_size;      /* current total buffer size */
198     int64_t ts_offset;
199     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
200                              from ctx.nb_streams if new streams appear during av_read_frame() */
201     int rate_emu;
202 } InputFile;
203
204 typedef struct OutputStream {
205     int file_index;          /* file index */
206     int index;               /* stream index in the output file */
207     int source_index;        /* InputStream index */
208     AVStream *st;            /* stream in the output file */
209     int encoding_needed;     /* true if encoding needed for this stream */
210     int frame_number;
211     /* input pts and corresponding output pts
212        for A/V sync */
213     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
214     struct InputStream *sync_ist; /* input stream to sync against */
215     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
216     AVBitStreamFilterContext *bitstream_filters;
217     AVCodec *enc;
218     int64_t max_frames;
219
220     /* video only */
221     int video_resample;
222     AVFrame resample_frame;              /* temporary frame for image resampling */
223     struct SwsContext *img_resample_ctx; /* for image resampling */
224     int resample_height;
225     int resample_width;
226     int resample_pix_fmt;
227     AVRational frame_rate;
228     int force_fps;
229     int top_field_first;
230
231     float frame_aspect_ratio;
232
233     /* forced key frames */
234     int64_t *forced_kf_pts;
235     int forced_kf_count;
236     int forced_kf_index;
237
238     /* audio only */
239     int audio_resample;
240     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
241     int audio_channels_mapped;           ///< number of channels in audio_channels_map
242     int resample_sample_fmt;
243     int resample_channels;
244     int resample_sample_rate;
245     float rematrix_volume;
246     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
247     FILE *logfile;
248
249     struct SwrContext *swr;
250
251 #if CONFIG_AVFILTER
252     AVFilterContext *output_video_filter;
253     AVFilterContext *input_video_filter;
254     AVFilterBufferRef *picref;
255     char *avfilter;
256     AVFilterGraph *graph;
257 #endif
258
259     int64_t sws_flags;
260     AVDictionary *opts;
261     int is_past_recording_time;
262     int stream_copy;
263     const char *attachment_filename;
264     int copy_initial_nonkeyframes;
265 } OutputStream;
266
267
268 #if HAVE_TERMIOS_H
269
270 /* init terminal so that we can grab keys */
271 static struct termios oldtty;
272 #endif
273
274 typedef struct OutputFile {
275     AVFormatContext *ctx;
276     AVDictionary *opts;
277     int ost_index;       /* index of the first stream in output_streams */
278     int64_t recording_time; /* desired length of the resulting file in microseconds */
279     int64_t start_time;     /* start time in microseconds */
280     uint64_t limit_filesize;
281 } OutputFile;
282
283 static InputStream *input_streams = NULL;
284 static int         nb_input_streams = 0;
285 static InputFile   *input_files   = NULL;
286 static int         nb_input_files   = 0;
287
288 static OutputStream *output_streams = NULL;
289 static int        nb_output_streams = 0;
290 static OutputFile   *output_files   = NULL;
291 static int        nb_output_files   = 0;
292
293 typedef struct OptionsContext {
294     /* input/output options */
295     int64_t start_time;
296     const char *format;
297
298     SpecifierOpt *codec_names;
299     int        nb_codec_names;
300     SpecifierOpt *audio_channels;
301     int        nb_audio_channels;
302     SpecifierOpt *audio_sample_rate;
303     int        nb_audio_sample_rate;
304     SpecifierOpt *rematrix_volume;
305     int        nb_rematrix_volume;
306     SpecifierOpt *frame_rates;
307     int        nb_frame_rates;
308     SpecifierOpt *frame_sizes;
309     int        nb_frame_sizes;
310     SpecifierOpt *frame_pix_fmts;
311     int        nb_frame_pix_fmts;
312
313     /* input options */
314     int64_t input_ts_offset;
315     int rate_emu;
316
317     SpecifierOpt *ts_scale;
318     int        nb_ts_scale;
319     SpecifierOpt *dump_attachment;
320     int        nb_dump_attachment;
321
322     /* output options */
323     StreamMap *stream_maps;
324     int     nb_stream_maps;
325     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
326     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
327     /* first item specifies output metadata, second is input */
328     MetadataMap (*meta_data_maps)[2];
329     int nb_meta_data_maps;
330     int metadata_global_manual;
331     int metadata_streams_manual;
332     int metadata_chapters_manual;
333     const char **attachments;
334     int       nb_attachments;
335
336     int chapters_input_file;
337
338     int64_t recording_time;
339     uint64_t limit_filesize;
340     float mux_preload;
341     float mux_max_delay;
342
343     int video_disable;
344     int audio_disable;
345     int subtitle_disable;
346     int data_disable;
347
348     /* indexed by output file stream index */
349     int   *streamid_map;
350     int nb_streamid_map;
351
352     SpecifierOpt *metadata;
353     int        nb_metadata;
354     SpecifierOpt *max_frames;
355     int        nb_max_frames;
356     SpecifierOpt *bitstream_filters;
357     int        nb_bitstream_filters;
358     SpecifierOpt *codec_tags;
359     int        nb_codec_tags;
360     SpecifierOpt *sample_fmts;
361     int        nb_sample_fmts;
362     SpecifierOpt *qscale;
363     int        nb_qscale;
364     SpecifierOpt *forced_key_frames;
365     int        nb_forced_key_frames;
366     SpecifierOpt *force_fps;
367     int        nb_force_fps;
368     SpecifierOpt *frame_aspect_ratios;
369     int        nb_frame_aspect_ratios;
370     SpecifierOpt *rc_overrides;
371     int        nb_rc_overrides;
372     SpecifierOpt *intra_matrices;
373     int        nb_intra_matrices;
374     SpecifierOpt *inter_matrices;
375     int        nb_inter_matrices;
376     SpecifierOpt *top_field_first;
377     int        nb_top_field_first;
378     SpecifierOpt *presets;
379     int        nb_presets;
380     SpecifierOpt *copy_initial_nonkeyframes;
381     int        nb_copy_initial_nonkeyframes;
382 #if CONFIG_AVFILTER
383     SpecifierOpt *filters;
384     int        nb_filters;
385 #endif
386 } OptionsContext;
387
388 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
389 {\
390     int i, ret;\
391     for (i = 0; i < o->nb_ ## name; i++) {\
392         char *spec = o->name[i].specifier;\
393         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
394             outvar = o->name[i].u.type;\
395         else if (ret < 0)\
396             exit_program(1);\
397     }\
398 }
399
400 static void reset_options(OptionsContext *o, int is_input)
401 {
402     const OptionDef *po = options;
403     OptionsContext bak= *o;
404
405     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
406     while (po->name) {
407         void *dst = (uint8_t*)o + po->u.off;
408
409         if (po->flags & OPT_SPEC) {
410             SpecifierOpt **so = dst;
411             int i, *count = (int*)(so + 1);
412             for (i = 0; i < *count; i++) {
413                 av_freep(&(*so)[i].specifier);
414                 if (po->flags & OPT_STRING)
415                     av_freep(&(*so)[i].u.str);
416             }
417             av_freep(so);
418             *count = 0;
419         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
420             av_freep(dst);
421         po++;
422     }
423
424     av_freep(&o->stream_maps);
425     av_freep(&o->audio_channel_maps);
426     av_freep(&o->meta_data_maps);
427     av_freep(&o->streamid_map);
428
429     memset(o, 0, sizeof(*o));
430
431     if(is_input) o->recording_time = bak.recording_time;
432     else         o->recording_time = INT64_MAX;
433     o->mux_max_delay  = 0.7;
434     o->limit_filesize = UINT64_MAX;
435     o->chapters_input_file = INT_MAX;
436
437     uninit_opts();
438     init_opts();
439 }
440
441 #if CONFIG_AVFILTER
442
443 static int configure_video_filters(InputStream *ist, OutputStream *ost)
444 {
445     AVFilterContext *last_filter, *filter;
446     /** filter graph containing all filters including input & output */
447     AVCodecContext *codec = ost->st->codec;
448     AVCodecContext *icodec = ist->st->codec;
449     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
450     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
451     AVRational sample_aspect_ratio;
452     char args[255];
453     int ret;
454
455     ost->graph = avfilter_graph_alloc();
456
457     if (ist->st->sample_aspect_ratio.num){
458         sample_aspect_ratio = ist->st->sample_aspect_ratio;
459     }else
460         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
461
462     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
463              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
464              sample_aspect_ratio.num, sample_aspect_ratio.den);
465
466     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
467                                        "src", args, NULL, ost->graph);
468     if (ret < 0)
469         return ret;
470 #if FF_API_OLD_VSINK_API
471     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
472                                        "out", NULL, pix_fmts, ost->graph);
473 #else
474     buffersink_params->pixel_fmts = pix_fmts;
475     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
476                                        "out", NULL, buffersink_params, ost->graph);
477 #endif
478     av_freep(&buffersink_params);
479     if (ret < 0)
480         return ret;
481     last_filter = ost->input_video_filter;
482
483     if (codec->width  != icodec->width || codec->height != icodec->height) {
484         snprintf(args, 255, "%d:%d:flags=0x%X",
485                  codec->width,
486                  codec->height,
487                  (unsigned)ost->sws_flags);
488         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
489                                                 NULL, args, NULL, ost->graph)) < 0)
490             return ret;
491         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
492             return ret;
493         last_filter = filter;
494     }
495
496     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
497     ost->graph->scale_sws_opts = av_strdup(args);
498
499     if (ost->avfilter) {
500         AVFilterInOut *outputs = avfilter_inout_alloc();
501         AVFilterInOut *inputs  = avfilter_inout_alloc();
502
503         outputs->name    = av_strdup("in");
504         outputs->filter_ctx = last_filter;
505         outputs->pad_idx = 0;
506         outputs->next    = NULL;
507
508         inputs->name    = av_strdup("out");
509         inputs->filter_ctx = ost->output_video_filter;
510         inputs->pad_idx = 0;
511         inputs->next    = NULL;
512
513         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
514             return ret;
515         av_freep(&ost->avfilter);
516     } else {
517         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
518             return ret;
519     }
520
521     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
522         return ret;
523
524     codec->width  = ost->output_video_filter->inputs[0]->w;
525     codec->height = ost->output_video_filter->inputs[0]->h;
526     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
527         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
528         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
529         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
530
531     return 0;
532 }
533 #endif /* CONFIG_AVFILTER */
534
535 static void term_exit(void)
536 {
537     av_log(NULL, AV_LOG_QUIET, "%s", "");
538 #if HAVE_TERMIOS_H
539     if(!run_as_daemon)
540         tcsetattr (0, TCSANOW, &oldtty);
541 #endif
542 }
543
544 static volatile int received_sigterm = 0;
545
546 static void sigterm_handler(int sig)
547 {
548     received_sigterm = sig;
549     received_nb_signals++;
550     term_exit();
551 }
552
553 static void term_init(void)
554 {
555 #if HAVE_TERMIOS_H
556     if(!run_as_daemon){
557     struct termios tty;
558
559     tcgetattr (0, &tty);
560     oldtty = tty;
561     atexit(term_exit);
562
563     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
564                           |INLCR|IGNCR|ICRNL|IXON);
565     tty.c_oflag |= OPOST;
566     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
567     tty.c_cflag &= ~(CSIZE|PARENB);
568     tty.c_cflag |= CS8;
569     tty.c_cc[VMIN] = 1;
570     tty.c_cc[VTIME] = 0;
571
572     tcsetattr (0, TCSANOW, &tty);
573     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
574     }
575 #endif
576     avformat_network_deinit();
577
578     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
579     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
580 #ifdef SIGXCPU
581     signal(SIGXCPU, sigterm_handler);
582 #endif
583 }
584
585 /* read a key without blocking */
586 static int read_key(void)
587 {
588     unsigned char ch;
589 #if HAVE_TERMIOS_H
590     int n = 1;
591     struct timeval tv;
592     fd_set rfds;
593
594     FD_ZERO(&rfds);
595     FD_SET(0, &rfds);
596     tv.tv_sec = 0;
597     tv.tv_usec = 0;
598     n = select(1, &rfds, NULL, NULL, &tv);
599     if (n > 0) {
600         n = read(0, &ch, 1);
601         if (n == 1)
602             return ch;
603
604         return n;
605     }
606 #elif HAVE_KBHIT
607 #    if HAVE_PEEKNAMEDPIPE
608     static int is_pipe;
609     static HANDLE input_handle;
610     DWORD dw, nchars;
611     if(!input_handle){
612         input_handle = GetStdHandle(STD_INPUT_HANDLE);
613         is_pipe = !GetConsoleMode(input_handle, &dw);
614     }
615
616     if (stdin->_cnt > 0) {
617         read(0, &ch, 1);
618         return ch;
619     }
620     if (is_pipe) {
621         /* When running under a GUI, you will end here. */
622         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
623             return -1;
624         //Read it
625         if(nchars != 0) {
626             read(0, &ch, 1);
627             return ch;
628         }else{
629             return -1;
630         }
631     }
632 #    endif
633     if(kbhit())
634         return(getch());
635 #endif
636     return -1;
637 }
638
639 static int decode_interrupt_cb(void *ctx)
640 {
641     return received_nb_signals > 1;
642 }
643
644 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
645
646 void av_noreturn exit_program(int ret)
647 {
648     int i;
649
650     /* close files */
651     for(i=0;i<nb_output_files;i++) {
652         AVFormatContext *s = output_files[i].ctx;
653         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
654             avio_close(s->pb);
655         avformat_free_context(s);
656         av_dict_free(&output_files[i].opts);
657     }
658     for(i=0;i<nb_input_files;i++) {
659         av_close_input_file(input_files[i].ctx);
660     }
661     for (i = 0; i < nb_input_streams; i++)
662         av_dict_free(&input_streams[i].opts);
663
664     if (vstats_file)
665         fclose(vstats_file);
666     av_free(vstats_filename);
667
668     av_freep(&input_streams);
669     av_freep(&input_files);
670     av_freep(&output_streams);
671     av_freep(&output_files);
672
673     uninit_opts();
674     av_free(audio_buf);
675     av_free(audio_out);
676     allocated_audio_buf_size= allocated_audio_out_size= 0;
677     av_free(samples);
678
679 #if CONFIG_AVFILTER
680     avfilter_uninit();
681 #endif
682     avformat_network_deinit();
683
684     av_freep(&input_tmp);
685
686     if (received_sigterm) {
687         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
688                (int) received_sigterm);
689         exit (255);
690     }
691
692     exit(ret); /* not all OS-es handle main() return value */
693 }
694
695 static void assert_avoptions(AVDictionary *m)
696 {
697     AVDictionaryEntry *t;
698     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
699         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
700         exit_program(1);
701     }
702 }
703
704 static void assert_codec_experimental(AVCodecContext *c, int encoder)
705 {
706     const char *codec_string = encoder ? "encoder" : "decoder";
707     AVCodec *codec;
708     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
709         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
710         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
711                 "results.\nAdd '-strict experimental' if you want to use it.\n",
712                 codec_string, c->codec->name);
713         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
714         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
715             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
716                    codec_string, codec->name);
717         exit_program(1);
718     }
719 }
720
721 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
722 {
723     if(codec && codec->sample_fmts){
724         const enum AVSampleFormat *p= codec->sample_fmts;
725         for(; *p!=-1; p++){
726             if(*p == st->codec->sample_fmt)
727                 break;
728         }
729         if (*p == -1) {
730             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
731                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
732             if(av_get_sample_fmt_name(st->codec->sample_fmt))
733             av_log(NULL, AV_LOG_WARNING,
734                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
735                    av_get_sample_fmt_name(st->codec->sample_fmt),
736                    codec->name,
737                    av_get_sample_fmt_name(codec->sample_fmts[0]));
738             st->codec->sample_fmt = codec->sample_fmts[0];
739         }
740     }
741 }
742
743 static void choose_sample_rate(AVStream *st, AVCodec *codec)
744 {
745     if(codec && codec->supported_samplerates){
746         const int *p= codec->supported_samplerates;
747         int best=0;
748         int best_dist=INT_MAX;
749         for(; *p; p++){
750             int dist= abs(st->codec->sample_rate - *p);
751             if(dist < best_dist){
752                 best_dist= dist;
753                 best= *p;
754             }
755         }
756         if(best_dist){
757             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
758         }
759         st->codec->sample_rate= best;
760     }
761 }
762
763 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
764 {
765     if(codec && codec->pix_fmts){
766         const enum PixelFormat *p= codec->pix_fmts;
767         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
768             if(st->codec->codec_id==CODEC_ID_MJPEG){
769                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
770             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
771                 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};
772             }
773         }
774         for (; *p != PIX_FMT_NONE; p++) {
775             if(*p == st->codec->pix_fmt)
776                 break;
777         }
778         if (*p == PIX_FMT_NONE) {
779             if(st->codec->pix_fmt != PIX_FMT_NONE)
780                 av_log(NULL, AV_LOG_WARNING,
781                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
782                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
783                         codec->name,
784                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
785             st->codec->pix_fmt = codec->pix_fmts[0];
786         }
787     }
788 }
789
790 static double get_sync_ipts(const OutputStream *ost)
791 {
792     const InputStream *ist = ost->sync_ist;
793     OutputFile *of = &output_files[ost->file_index];
794     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
795 }
796
797 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
798 {
799     int ret;
800
801     while(bsfc){
802         AVPacket new_pkt= *pkt;
803         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
804                                           &new_pkt.data, &new_pkt.size,
805                                           pkt->data, pkt->size,
806                                           pkt->flags & AV_PKT_FLAG_KEY);
807         if(a>0){
808             av_free_packet(pkt);
809             new_pkt.destruct= av_destruct_packet;
810         } else if(a<0){
811             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
812                    bsfc->filter->name, pkt->stream_index,
813                    avctx->codec ? avctx->codec->name : "copy");
814             print_error("", a);
815             if (exit_on_error)
816                 exit_program(1);
817         }
818         *pkt= new_pkt;
819
820         bsfc= bsfc->next;
821     }
822
823     ret= av_interleaved_write_frame(s, pkt);
824     if(ret < 0){
825         print_error("av_interleaved_write_frame()", ret);
826         exit_program(1);
827     }
828 }
829
830 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
831 {
832     int fill_char = 0x00;
833     if (sample_fmt == AV_SAMPLE_FMT_U8)
834         fill_char = 0x80;
835     memset(buf, fill_char, size);
836 }
837
838 static void do_audio_out(AVFormatContext *s,
839                          OutputStream *ost,
840                          InputStream *ist,
841                          unsigned char *buf, int size)
842 {
843     uint8_t *buftmp;
844     int64_t audio_out_size, audio_buf_size;
845     int64_t allocated_for_size= size;
846
847     int size_out, frame_bytes, ret, resample_changed;
848     AVCodecContext *enc= ost->st->codec;
849     AVCodecContext *dec= ist->st->codec;
850     int osize = av_get_bytes_per_sample(enc->sample_fmt);
851     int isize = av_get_bytes_per_sample(dec->sample_fmt);
852     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
853
854 need_realloc:
855     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
856     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
857     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
858     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
859     audio_buf_size*= osize*enc->channels;
860
861     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
862     if(coded_bps > 8*osize)
863         audio_out_size= audio_out_size * coded_bps / (8*osize);
864     audio_out_size += FF_MIN_BUFFER_SIZE;
865
866     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
867         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
868         exit_program(1);
869     }
870
871     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
872     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
873     if (!audio_buf || !audio_out){
874         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
875         exit_program(1);
876     }
877
878     if (enc->channels != dec->channels
879      || enc->sample_fmt != dec->sample_fmt
880      || enc->sample_rate!= dec->sample_rate
881     )
882         ost->audio_resample = 1;
883
884     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
885                        ost->resample_channels    != dec->channels   ||
886                        ost->resample_sample_rate != dec->sample_rate;
887
888     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
889         if (resample_changed) {
890             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",
891                    ist->file_index, ist->st->index,
892                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
893                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
894             ost->resample_sample_fmt  = dec->sample_fmt;
895             ost->resample_channels    = dec->channels;
896             ost->resample_sample_rate = dec->sample_rate;
897             swr_free(&ost->swr);
898         }
899         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
900         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
901             ost->resample_sample_fmt  == enc->sample_fmt &&
902             ost->resample_channels    == enc->channels   &&
903             ost->resample_sample_rate == enc->sample_rate) {
904             //ost->swr = NULL;
905             ost->audio_resample = 0;
906         } else {
907             ost->swr = swr_alloc_set_opts(ost->swr,
908                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
909                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
910                                           0, NULL);
911             if (ost->audio_channels_mapped)
912                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
913             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
914             if (ost->audio_channels_mapped) {
915                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
916                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
917             }
918             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
919             av_opt_set_int(ost->swr, "och", enc->channels, 0);
920             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
921             if(ost->swr && swr_init(ost->swr) < 0){
922                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
923                 swr_free(&ost->swr);
924             }
925
926             if (!ost->swr) {
927                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
928                         dec->channels, dec->sample_rate,
929                         enc->channels, enc->sample_rate);
930                 exit_program(1);
931             }
932         }
933     }
934
935     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
936
937     if(audio_sync_method){
938         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
939                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
940         int idelta = delta * dec->sample_rate / enc->sample_rate;
941         int byte_delta = idelta * isize * dec->channels;
942
943         //FIXME resample delay
944         if(fabs(delta) > 50){
945             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
946                 if(byte_delta < 0){
947                     byte_delta= FFMAX(byte_delta, -size);
948                     size += byte_delta;
949                     buf  -= byte_delta;
950                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
951                            -byte_delta / (isize * dec->channels));
952                     if(!size)
953                         return;
954                     ist->is_start=0;
955                 }else{
956                     input_tmp= av_realloc(input_tmp, byte_delta + size);
957
958                     if(byte_delta > allocated_for_size - size){
959                         allocated_for_size= byte_delta + (int64_t)size;
960                         goto need_realloc;
961                     }
962                     ist->is_start=0;
963
964                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
965                     memcpy(input_tmp + byte_delta, buf, size);
966                     buf= input_tmp;
967                     size += byte_delta;
968                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
969                 }
970             }else if(audio_sync_method>1){
971                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
972                 av_assert0(ost->audio_resample);
973                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
974                        delta, comp, enc->sample_rate);
975 //                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));
976                 swr_compensate(ost->swr, comp, enc->sample_rate);
977             }
978         }
979     }else
980         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
981                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
982
983     if (ost->audio_resample) {
984         buftmp = audio_buf;
985         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
986                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
987         size_out = size_out * enc->channels * osize;
988     } else {
989         buftmp = buf;
990         size_out = size;
991     }
992
993     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
994
995     /* now encode as many frames as possible */
996     if (enc->frame_size > 1) {
997         /* output resampled raw samples */
998         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
999             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1000             exit_program(1);
1001         }
1002         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1003
1004         frame_bytes = enc->frame_size * osize * enc->channels;
1005
1006         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1007             AVPacket pkt;
1008             av_init_packet(&pkt);
1009
1010             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1011
1012             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1013
1014             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1015                                        (short *)audio_buf);
1016             if (ret < 0) {
1017                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1018                 exit_program(1);
1019             }
1020             audio_size += ret;
1021             pkt.stream_index= ost->index;
1022             pkt.data= audio_out;
1023             pkt.size= ret;
1024             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1025                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1026             pkt.flags |= AV_PKT_FLAG_KEY;
1027             write_frame(s, &pkt, enc, ost->bitstream_filters);
1028
1029             ost->sync_opts += enc->frame_size;
1030         }
1031     } else {
1032         AVPacket pkt;
1033         av_init_packet(&pkt);
1034
1035         ost->sync_opts += size_out / (osize * enc->channels);
1036
1037         /* output a pcm frame */
1038         /* determine the size of the coded buffer */
1039         size_out /= osize;
1040         if (coded_bps)
1041             size_out = size_out*coded_bps/8;
1042
1043         if(size_out > audio_out_size){
1044             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1045             exit_program(1);
1046         }
1047
1048         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1049         ret = avcodec_encode_audio(enc, audio_out, size_out,
1050                                    (short *)buftmp);
1051         if (ret < 0) {
1052             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1053             exit_program(1);
1054         }
1055         audio_size += ret;
1056         pkt.stream_index= ost->index;
1057         pkt.data= audio_out;
1058         pkt.size= ret;
1059         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1060             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1061         pkt.flags |= AV_PKT_FLAG_KEY;
1062         write_frame(s, &pkt, enc, ost->bitstream_filters);
1063     }
1064 }
1065
1066 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1067 {
1068     AVCodecContext *dec;
1069     AVPicture *picture2;
1070     AVPicture picture_tmp;
1071     uint8_t *buf = 0;
1072
1073     dec = ist->st->codec;
1074
1075     /* deinterlace : must be done before any resize */
1076     if (do_deinterlace) {
1077         int size;
1078
1079         /* create temporary picture */
1080         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1081         buf = av_malloc(size);
1082         if (!buf)
1083             return;
1084
1085         picture2 = &picture_tmp;
1086         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1087
1088         if(avpicture_deinterlace(picture2, picture,
1089                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1090             /* if error, do not deinterlace */
1091             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1092             av_free(buf);
1093             buf = NULL;
1094             picture2 = picture;
1095         }
1096     } else {
1097         picture2 = picture;
1098     }
1099
1100     if (picture != picture2)
1101         *picture = *picture2;
1102     *bufp = buf;
1103 }
1104
1105 static void do_subtitle_out(AVFormatContext *s,
1106                             OutputStream *ost,
1107                             InputStream *ist,
1108                             AVSubtitle *sub,
1109                             int64_t pts)
1110 {
1111     static uint8_t *subtitle_out = NULL;
1112     int subtitle_out_max_size = 1024 * 1024;
1113     int subtitle_out_size, nb, i;
1114     AVCodecContext *enc;
1115     AVPacket pkt;
1116
1117     if (pts == AV_NOPTS_VALUE) {
1118         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1119         if (exit_on_error)
1120             exit_program(1);
1121         return;
1122     }
1123
1124     enc = ost->st->codec;
1125
1126     if (!subtitle_out) {
1127         subtitle_out = av_malloc(subtitle_out_max_size);
1128     }
1129
1130     /* Note: DVB subtitle need one packet to draw them and one other
1131        packet to clear them */
1132     /* XXX: signal it in the codec context ? */
1133     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1134         nb = 2;
1135     else
1136         nb = 1;
1137
1138     for(i = 0; i < nb; i++) {
1139         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1140         // start_display_time is required to be 0
1141         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1142         sub->end_display_time -= sub->start_display_time;
1143         sub->start_display_time = 0;
1144         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1145                                                     subtitle_out_max_size, sub);
1146         if (subtitle_out_size < 0) {
1147             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1148             exit_program(1);
1149         }
1150
1151         av_init_packet(&pkt);
1152         pkt.stream_index = ost->index;
1153         pkt.data = subtitle_out;
1154         pkt.size = subtitle_out_size;
1155         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1156         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1157             /* XXX: the pts correction is handled here. Maybe handling
1158                it in the codec would be better */
1159             if (i == 0)
1160                 pkt.pts += 90 * sub->start_display_time;
1161             else
1162                 pkt.pts += 90 * sub->end_display_time;
1163         }
1164         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1165     }
1166 }
1167
1168 static int bit_buffer_size= 1024*256;
1169 static uint8_t *bit_buffer= NULL;
1170
1171 static void do_video_resample(OutputStream *ost,
1172                               InputStream *ist,
1173                               AVFrame *in_picture,
1174                               AVFrame **out_picture)
1175 {
1176 #if CONFIG_AVFILTER
1177     *out_picture = in_picture;
1178 #else
1179     AVCodecContext *dec = ist->st->codec;
1180     AVCodecContext *enc = ost->st->codec;
1181     int resample_changed = ost->resample_width   != dec->width  ||
1182                            ost->resample_height  != dec->height ||
1183                            ost->resample_pix_fmt != dec->pix_fmt;
1184
1185     *out_picture = in_picture;
1186     if (resample_changed) {
1187         av_log(NULL, AV_LOG_INFO,
1188                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1189                ist->file_index, ist->st->index,
1190                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1191                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1192         ost->resample_width   = dec->width;
1193         ost->resample_height  = dec->height;
1194         ost->resample_pix_fmt = dec->pix_fmt;
1195     }
1196
1197     ost->video_resample = dec->width   != enc->width  ||
1198                           dec->height  != enc->height ||
1199                           dec->pix_fmt != enc->pix_fmt;
1200
1201     if (ost->video_resample) {
1202         *out_picture = &ost->resample_frame;
1203         if (!ost->img_resample_ctx || resample_changed) {
1204             /* initialize the destination picture */
1205             if (!ost->resample_frame.data[0]) {
1206                 avcodec_get_frame_defaults(&ost->resample_frame);
1207                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1208                                     enc->width, enc->height)) {
1209                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1210                     exit_program(1);
1211                 }
1212             }
1213             /* initialize a new scaler context */
1214             sws_freeContext(ost->img_resample_ctx);
1215             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1216                                                    enc->width, enc->height, enc->pix_fmt,
1217                                                    ost->sws_flags, NULL, NULL, NULL);
1218             if (ost->img_resample_ctx == NULL) {
1219                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1220                 exit_program(1);
1221             }
1222         }
1223         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1224               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1225     }
1226 #endif
1227 }
1228
1229
1230 static void do_video_out(AVFormatContext *s,
1231                          OutputStream *ost,
1232                          InputStream *ist,
1233                          AVFrame *in_picture,
1234                          int *frame_size, float quality)
1235 {
1236     int nb_frames, i, ret, format_video_sync;
1237     AVFrame *final_picture;
1238     AVCodecContext *enc;
1239     double sync_ipts;
1240     double duration = 0;
1241
1242     enc = ost->st->codec;
1243
1244     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1245         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1246         if(ist->st->avg_frame_rate.num)
1247             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1248
1249         duration /= av_q2d(enc->time_base);
1250     }
1251
1252     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1253
1254     /* by default, we output a single frame */
1255     nb_frames = 1;
1256
1257     *frame_size = 0;
1258
1259     format_video_sync = video_sync_method;
1260     if (format_video_sync < 0)
1261         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1262
1263     if (format_video_sync) {
1264         double vdelta = sync_ipts - ost->sync_opts + duration;
1265         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1266         if (vdelta < -1.1)
1267             nb_frames = 0;
1268         else if (format_video_sync == 2) {
1269             if(vdelta<=-0.6){
1270                 nb_frames=0;
1271             }else if(vdelta>0.6)
1272                 ost->sync_opts= lrintf(sync_ipts);
1273         }else if (vdelta > 1.1)
1274             nb_frames = lrintf(vdelta);
1275 //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);
1276         if (nb_frames == 0){
1277             ++nb_frames_drop;
1278             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1279         }else if (nb_frames > 1) {
1280             nb_frames_dup += nb_frames - 1;
1281             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1282         }
1283     }else
1284         ost->sync_opts= lrintf(sync_ipts);
1285
1286     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1287     if (nb_frames <= 0)
1288         return;
1289
1290     do_video_resample(ost, ist, in_picture, &final_picture);
1291
1292     /* duplicates frame if needed */
1293     for(i=0;i<nb_frames;i++) {
1294         AVPacket pkt;
1295         av_init_packet(&pkt);
1296         pkt.stream_index= ost->index;
1297
1298         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1299             enc->codec->id == CODEC_ID_RAWVIDEO) {
1300             /* raw pictures are written as AVPicture structure to
1301                avoid any copies. We support temporarily the older
1302                method. */
1303             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1304             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1305             pkt.data= (uint8_t *)final_picture;
1306             pkt.size=  sizeof(AVPicture);
1307             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1308             pkt.flags |= AV_PKT_FLAG_KEY;
1309
1310             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1311         } else {
1312             AVFrame big_picture;
1313
1314             big_picture= *final_picture;
1315             /* better than nothing: use input picture interlaced
1316                settings */
1317             big_picture.interlaced_frame = in_picture->interlaced_frame;
1318             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1319                 if (ost->top_field_first == -1)
1320                     big_picture.top_field_first = in_picture->top_field_first;
1321                 else
1322                     big_picture.top_field_first = !!ost->top_field_first;
1323             }
1324
1325             /* handles same_quant here. This is not correct because it may
1326                not be a global option */
1327             big_picture.quality = quality;
1328             if (!enc->me_threshold)
1329                 big_picture.pict_type = 0;
1330 //            big_picture.pts = AV_NOPTS_VALUE;
1331             big_picture.pts= ost->sync_opts;
1332 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1333 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1334             if (ost->forced_kf_index < ost->forced_kf_count &&
1335                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1336                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1337                 ost->forced_kf_index++;
1338             }
1339             ret = avcodec_encode_video(enc,
1340                                        bit_buffer, bit_buffer_size,
1341                                        &big_picture);
1342             if (ret < 0) {
1343                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1344                 exit_program(1);
1345             }
1346
1347             if(ret>0){
1348                 pkt.data= bit_buffer;
1349                 pkt.size= ret;
1350                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1351                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1352 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1353    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1354    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1355
1356                 if(enc->coded_frame->key_frame)
1357                     pkt.flags |= AV_PKT_FLAG_KEY;
1358                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1359                 *frame_size = ret;
1360                 video_size += ret;
1361                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1362                 //        enc->frame_number-1, ret, enc->pict_type);
1363                 /* if two pass, output log */
1364                 if (ost->logfile && enc->stats_out) {
1365                     fprintf(ost->logfile, "%s", enc->stats_out);
1366                 }
1367             }
1368         }
1369         ost->sync_opts++;
1370         ost->frame_number++;
1371     }
1372 }
1373
1374 static double psnr(double d)
1375 {
1376     return -10.0*log(d)/log(10.0);
1377 }
1378
1379 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1380                            int frame_size)
1381 {
1382     AVCodecContext *enc;
1383     int frame_number;
1384     double ti1, bitrate, avg_bitrate;
1385
1386     /* this is executed just the first time do_video_stats is called */
1387     if (!vstats_file) {
1388         vstats_file = fopen(vstats_filename, "w");
1389         if (!vstats_file) {
1390             perror("fopen");
1391             exit_program(1);
1392         }
1393     }
1394
1395     enc = ost->st->codec;
1396     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1397         frame_number = ost->frame_number;
1398         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1399         if (enc->flags&CODEC_FLAG_PSNR)
1400             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1401
1402         fprintf(vstats_file,"f_size= %6d ", frame_size);
1403         /* compute pts value */
1404         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1405         if (ti1 < 0.01)
1406             ti1 = 0.01;
1407
1408         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1409         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1410         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1411             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1412         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1413     }
1414 }
1415
1416 static void print_report(OutputFile *output_files,
1417                          OutputStream *ost_table, int nb_ostreams,
1418                          int is_last_report, int64_t timer_start, int64_t cur_time)
1419 {
1420     char buf[1024];
1421     OutputStream *ost;
1422     AVFormatContext *oc;
1423     int64_t total_size;
1424     AVCodecContext *enc;
1425     int frame_number, vid, i;
1426     double bitrate;
1427     int64_t pts = INT64_MAX;
1428     static int64_t last_time = -1;
1429     static int qp_histogram[52];
1430     int hours, mins, secs, us;
1431
1432     if (!print_stats && !is_last_report)
1433         return;
1434
1435     if (!is_last_report) {
1436         if (last_time == -1) {
1437             last_time = cur_time;
1438             return;
1439         }
1440         if ((cur_time - last_time) < 500000)
1441             return;
1442         last_time = cur_time;
1443     }
1444
1445
1446     oc = output_files[0].ctx;
1447
1448     total_size = avio_size(oc->pb);
1449     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1450         total_size= avio_tell(oc->pb);
1451         if (total_size < 0)
1452             total_size = 0;
1453     }
1454
1455     buf[0] = '\0';
1456     vid = 0;
1457     for(i=0;i<nb_ostreams;i++) {
1458         float q = -1;
1459         ost = &ost_table[i];
1460         enc = ost->st->codec;
1461         if (!ost->stream_copy && enc->coded_frame)
1462             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1463         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1464             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1465         }
1466         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1467             float t = (cur_time-timer_start) / 1000000.0;
1468
1469             frame_number = ost->frame_number;
1470             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1471                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1472             if(is_last_report)
1473                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1474             if(qp_hist){
1475                 int j;
1476                 int qp = lrintf(q);
1477                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1478                     qp_histogram[qp]++;
1479                 for(j=0; j<32; j++)
1480                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1481             }
1482             if (enc->flags&CODEC_FLAG_PSNR){
1483                 int j;
1484                 double error, error_sum=0;
1485                 double scale, scale_sum=0;
1486                 char type[3]= {'Y','U','V'};
1487                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1488                 for(j=0; j<3; j++){
1489                     if(is_last_report){
1490                         error= enc->error[j];
1491                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1492                     }else{
1493                         error= enc->coded_frame->error[j];
1494                         scale= enc->width*enc->height*255.0*255.0;
1495                     }
1496                     if(j) scale/=4;
1497                     error_sum += error;
1498                     scale_sum += scale;
1499                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1500                 }
1501                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1502             }
1503             vid = 1;
1504         }
1505         /* compute min output value */
1506         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1507                                       ost->st->time_base, AV_TIME_BASE_Q));
1508     }
1509
1510     secs = pts / AV_TIME_BASE;
1511     us = pts % AV_TIME_BASE;
1512     mins = secs / 60;
1513     secs %= 60;
1514     hours = mins / 60;
1515     mins %= 60;
1516
1517     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1518
1519     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1520              "size=%8.0fkB time=", total_size / 1024.0);
1521     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1522              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1523              (100 * us) / AV_TIME_BASE);
1524     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1525              "bitrate=%6.1fkbits/s", bitrate);
1526
1527     if (nb_frames_dup || nb_frames_drop)
1528         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1529                 nb_frames_dup, nb_frames_drop);
1530
1531     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1532
1533     fflush(stderr);
1534
1535     if (is_last_report) {
1536         int64_t raw= audio_size + video_size + extra_size;
1537         av_log(NULL, AV_LOG_INFO, "\n");
1538         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1539                video_size/1024.0,
1540                audio_size/1024.0,
1541                extra_size/1024.0,
1542                100.0*(total_size - raw)/raw
1543         );
1544         if(video_size + audio_size + extra_size == 0){
1545             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1546         }
1547     }
1548 }
1549
1550 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1551 {
1552     int i, ret;
1553
1554     for (i = 0; i < nb_ostreams; i++) {
1555         OutputStream   *ost = &ost_table[i];
1556         AVCodecContext *enc = ost->st->codec;
1557         AVFormatContext *os = output_files[ost->file_index].ctx;
1558
1559         if (!ost->encoding_needed)
1560             continue;
1561
1562         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1563             continue;
1564         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1565             continue;
1566
1567         for(;;) {
1568             AVPacket pkt;
1569             int fifo_bytes;
1570             av_init_packet(&pkt);
1571             pkt.stream_index= ost->index;
1572
1573             switch (ost->st->codec->codec_type) {
1574             case AVMEDIA_TYPE_AUDIO:
1575                 fifo_bytes = av_fifo_size(ost->fifo);
1576                 ret = 0;
1577                 /* encode any samples remaining in fifo */
1578                 if (fifo_bytes > 0) {
1579                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1580                     int fs_tmp = enc->frame_size;
1581
1582                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1583                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1584                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1585                     } else { /* pad */
1586                         int frame_bytes = enc->frame_size*osize*enc->channels;
1587                         if (allocated_audio_buf_size < frame_bytes)
1588                             exit_program(1);
1589                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1590                     }
1591
1592                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1593                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1594                                               ost->st->time_base.num, enc->sample_rate);
1595                     enc->frame_size = fs_tmp;
1596                 }
1597                 if (ret <= 0) {
1598                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1599                 }
1600                 if (ret < 0) {
1601                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1602                     exit_program(1);
1603                 }
1604                 audio_size += ret;
1605                 pkt.flags |= AV_PKT_FLAG_KEY;
1606                 break;
1607             case AVMEDIA_TYPE_VIDEO:
1608                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1609                 if (ret < 0) {
1610                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1611                     exit_program(1);
1612                 }
1613                 video_size += ret;
1614                 if(enc->coded_frame && enc->coded_frame->key_frame)
1615                     pkt.flags |= AV_PKT_FLAG_KEY;
1616                 if (ost->logfile && enc->stats_out) {
1617                     fprintf(ost->logfile, "%s", enc->stats_out);
1618                 }
1619                 break;
1620             default:
1621                 ret=-1;
1622             }
1623
1624             if (ret <= 0)
1625                 break;
1626             pkt.data = bit_buffer;
1627             pkt.size = ret;
1628             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1629                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1630             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1631         }
1632     }
1633 }
1634
1635 /*
1636  * Check whether a packet from ist should be written into ost at this time
1637  */
1638 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1639 {
1640     OutputFile *of = &output_files[ost->file_index];
1641     int ist_index  = ist - input_streams;
1642
1643     if (ost->source_index != ist_index)
1644         return 0;
1645
1646     if (of->start_time && ist->pts < of->start_time)
1647         return 0;
1648
1649     if (of->recording_time != INT64_MAX &&
1650         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1651                       (AVRational){1, 1000000}) >= 0) {
1652         ost->is_past_recording_time = 1;
1653         return 0;
1654     }
1655
1656     return 1;
1657 }
1658
1659 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1660 {
1661     OutputFile *of = &output_files[ost->file_index];
1662     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1663     AVPicture pict;
1664     AVPacket opkt;
1665
1666     av_init_packet(&opkt);
1667
1668     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1669         !ost->copy_initial_nonkeyframes)
1670         return;
1671
1672     /* force the input stream PTS */
1673     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1674         audio_size += pkt->size;
1675     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1676         video_size += pkt->size;
1677         ost->sync_opts++;
1678     }
1679
1680     opkt.stream_index = ost->index;
1681     if (pkt->pts != AV_NOPTS_VALUE)
1682         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1683     else
1684         opkt.pts = AV_NOPTS_VALUE;
1685
1686     if (pkt->dts == AV_NOPTS_VALUE)
1687         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1688     else
1689         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1690     opkt.dts -= ost_tb_start_time;
1691
1692     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1693     opkt.flags    = pkt->flags;
1694
1695     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1696     if(   ost->st->codec->codec_id != CODEC_ID_H264
1697        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1698        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1699        ) {
1700         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1701             opkt.destruct = av_destruct_packet;
1702     } else {
1703         opkt.data = pkt->data;
1704         opkt.size = pkt->size;
1705     }
1706     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1707         /* store AVPicture in AVPacket, as expected by the output format */
1708         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1709         opkt.data = (uint8_t *)&pict;
1710         opkt.size = sizeof(AVPicture);
1711         opkt.flags |= AV_PKT_FLAG_KEY;
1712     }
1713
1714     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1715     ost->st->codec->frame_number++;
1716     ost->frame_number++;
1717     av_free_packet(&opkt);
1718 }
1719
1720 static void rate_emu_sleep(InputStream *ist)
1721 {
1722     if (input_files[ist->file_index].rate_emu) {
1723         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1724         int64_t now = av_gettime() - ist->start;
1725         if (pts > now)
1726             usleep(pts - now);
1727     }
1728 }
1729
1730 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1731 {
1732     static unsigned int samples_size = 0;
1733     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1734     uint8_t *decoded_data_buf  = NULL;
1735     int      decoded_data_size = 0;
1736     int i, ret;
1737
1738     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1739         av_free(samples);
1740         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1741         samples      = av_malloc(samples_size);
1742     }
1743     decoded_data_size = samples_size;
1744
1745     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1746                                 pkt);
1747     if (ret < 0)
1748         return ret;
1749     *got_output  = decoded_data_size > 0;
1750
1751     /* Some bug in mpeg audio decoder gives */
1752     /* decoded_data_size < 0, it seems they are overflows */
1753     if (!*got_output) {
1754         /* no audio frame */
1755         return ret;
1756     }
1757
1758     decoded_data_buf = (uint8_t *)samples;
1759     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1760                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1761
1762     // preprocess audio (volume)
1763     if (audio_volume != 256) {
1764         switch (ist->st->codec->sample_fmt) {
1765         case AV_SAMPLE_FMT_U8:
1766         {
1767             uint8_t *volp = samples;
1768             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1769                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1770                 *volp++ = av_clip_uint8(v);
1771             }
1772             break;
1773         }
1774         case AV_SAMPLE_FMT_S16:
1775         {
1776             int16_t *volp = samples;
1777             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1778                 int v = ((*volp) * audio_volume + 128) >> 8;
1779                 *volp++ = av_clip_int16(v);
1780             }
1781             break;
1782         }
1783         case AV_SAMPLE_FMT_S32:
1784         {
1785             int32_t *volp = samples;
1786             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1787                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1788                 *volp++ = av_clipl_int32(v);
1789             }
1790             break;
1791         }
1792         case AV_SAMPLE_FMT_FLT:
1793         {
1794             float *volp = samples;
1795             float scale = audio_volume / 256.f;
1796             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1797                 *volp++ *= scale;
1798             }
1799             break;
1800         }
1801         case AV_SAMPLE_FMT_DBL:
1802         {
1803             double *volp = samples;
1804             double scale = audio_volume / 256.;
1805             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1806                 *volp++ *= scale;
1807             }
1808             break;
1809         }
1810         default:
1811             av_log(NULL, AV_LOG_FATAL,
1812                    "Audio volume adjustment on sample format %s is not supported.\n",
1813                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1814             exit_program(1);
1815         }
1816     }
1817
1818     rate_emu_sleep(ist);
1819
1820     for (i = 0; i < nb_output_streams; i++) {
1821         OutputStream *ost = &output_streams[i];
1822
1823         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1824             continue;
1825         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1826                      decoded_data_buf, decoded_data_size);
1827     }
1828     return ret;
1829 }
1830
1831 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1832 {
1833     AVFrame *decoded_frame, *filtered_frame = NULL;
1834     void *buffer_to_free = NULL;
1835     int i, ret = 0;
1836     float quality = 0;
1837 #if CONFIG_AVFILTER
1838     int frame_available = 1;
1839 #endif
1840     int duration=0;
1841
1842     if (!(decoded_frame = avcodec_alloc_frame()))
1843         return AVERROR(ENOMEM);
1844     pkt->pts  = *pkt_pts;
1845     pkt->dts  = *pkt_dts;
1846     *pkt_pts  = AV_NOPTS_VALUE;
1847
1848     if (pkt->duration) {
1849         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1850     } else if(ist->st->codec->time_base.num != 0) {
1851         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1852         duration = ((int64_t)AV_TIME_BASE *
1853                           ist->st->codec->time_base.num * ticks) /
1854                           ist->st->codec->time_base.den;
1855     }
1856
1857     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
1858         *pkt_dts += duration;
1859     }else
1860         *pkt_dts = AV_NOPTS_VALUE;
1861
1862     ret = avcodec_decode_video2(ist->st->codec,
1863                                 decoded_frame, got_output, pkt);
1864     if (ret < 0)
1865         goto fail;
1866
1867     quality = same_quant ? decoded_frame->quality : 0;
1868     if (!*got_output) {
1869         /* no picture yet */
1870         av_freep(&decoded_frame);
1871         return ret;
1872     }
1873
1874     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1875         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1876
1877     ist->next_pts += duration;
1878     pkt->size = 0;
1879
1880     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1881
1882 #if CONFIG_AVFILTER
1883     for(i=0;i<nb_output_streams;i++) {
1884         OutputStream *ost = ost = &output_streams[i];
1885         if(check_output_constraints(ist, ost)){
1886             if (!decoded_frame->sample_aspect_ratio.num)
1887                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1888             decoded_frame->pts = ist->pts;
1889
1890             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1891         }
1892     }
1893 #endif
1894
1895     rate_emu_sleep(ist);
1896
1897     for (i = 0; i < nb_output_streams; i++) {
1898         OutputStream *ost = &output_streams[i];
1899         int frame_size;
1900
1901         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1902             continue;
1903
1904 #if CONFIG_AVFILTER
1905         if (ost->input_video_filter) {
1906             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1907         }
1908         while (frame_available) {
1909             if (ost->output_video_filter) {
1910                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1911                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1912                     goto cont;
1913                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1914                     ret = AVERROR(ENOMEM);
1915                     goto fail;
1916                 }
1917                 *filtered_frame= *decoded_frame; //for me_threshold
1918                 if (ost->picref) {
1919                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1920                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1921                 }
1922             }
1923             if (ost->picref->video && !ost->frame_aspect_ratio)
1924                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1925 #else
1926             filtered_frame = decoded_frame;
1927 #endif
1928
1929             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1930                          same_quant ? quality : ost->st->codec->global_quality);
1931             if (vstats_filename && frame_size)
1932                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1933 #if CONFIG_AVFILTER
1934             cont:
1935             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1936             avfilter_unref_buffer(ost->picref);
1937         }
1938         av_freep(&filtered_frame);
1939 #endif
1940     }
1941
1942 fail:
1943     av_free(buffer_to_free);
1944     av_freep(&decoded_frame);
1945     return ret;
1946 }
1947
1948 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1949 {
1950     AVSubtitle subtitle;
1951     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1952                                           &subtitle, got_output, pkt);
1953     if (ret < 0)
1954         return ret;
1955     if (!*got_output)
1956         return ret;
1957
1958     rate_emu_sleep(ist);
1959
1960     for (i = 0; i < nb_output_streams; i++) {
1961         OutputStream *ost = &output_streams[i];
1962
1963         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1964             continue;
1965
1966         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1967     }
1968
1969     avsubtitle_free(&subtitle);
1970     return ret;
1971 }
1972
1973 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1974 static int output_packet(InputStream *ist,
1975                          OutputStream *ost_table, int nb_ostreams,
1976                          const AVPacket *pkt)
1977 {
1978     int ret = 0, i;
1979     int got_output;
1980     int64_t pkt_dts = AV_NOPTS_VALUE;
1981     int64_t pkt_pts = AV_NOPTS_VALUE;
1982
1983     AVPacket avpkt;
1984
1985     if (ist->next_pts == AV_NOPTS_VALUE)
1986         ist->next_pts = ist->pts;
1987
1988     if (pkt == NULL) {
1989         /* EOF handling */
1990         av_init_packet(&avpkt);
1991         avpkt.data = NULL;
1992         avpkt.size = 0;
1993         goto handle_eof;
1994     } else {
1995         avpkt = *pkt;
1996     }
1997
1998     if(pkt->dts != AV_NOPTS_VALUE){
1999         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2000             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2001         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2002     }
2003     if(pkt->pts != AV_NOPTS_VALUE)
2004         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2005
2006     //while we have more to decode or while the decoder did output something on EOF
2007     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2008     handle_eof:
2009
2010         ist->pts = ist->next_pts;
2011
2012         if (avpkt.size && avpkt.size != pkt->size) {
2013             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2014                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2015             ist->showed_multi_packet_warning = 1;
2016         }
2017
2018         switch(ist->st->codec->codec_type) {
2019         case AVMEDIA_TYPE_AUDIO:
2020             ret = transcode_audio    (ist, &avpkt, &got_output);
2021             break;
2022         case AVMEDIA_TYPE_VIDEO:
2023             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2024             break;
2025         case AVMEDIA_TYPE_SUBTITLE:
2026             ret = transcode_subtitles(ist, &avpkt, &got_output);
2027             break;
2028         default:
2029             return -1;
2030         }
2031
2032         if (ret < 0)
2033             return ret;
2034         // touch data and size only if not EOF
2035         if (pkt) {
2036             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2037                 ret = avpkt.size;
2038             avpkt.data += ret;
2039             avpkt.size -= ret;
2040         }
2041         if (!got_output) {
2042             continue;
2043         }
2044     }
2045
2046     /* handle stream copy */
2047     if (!ist->decoding_needed) {
2048         rate_emu_sleep(ist);
2049         ist->pts = ist->next_pts;
2050         switch (ist->st->codec->codec_type) {
2051         case AVMEDIA_TYPE_AUDIO:
2052             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2053                              ist->st->codec->sample_rate;
2054             break;
2055         case AVMEDIA_TYPE_VIDEO:
2056             if (ist->st->codec->time_base.num != 0) {
2057                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2058                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2059                                   ist->st->codec->time_base.num * ticks) /
2060                                   ist->st->codec->time_base.den;
2061             }
2062             break;
2063         }
2064     }
2065     for (i = 0; pkt && i < nb_ostreams; i++) {
2066         OutputStream *ost = &ost_table[i];
2067
2068         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2069             continue;
2070
2071         do_streamcopy(ist, ost, pkt);
2072     }
2073
2074     return 0;
2075 }
2076
2077 static void print_sdp(OutputFile *output_files, int n)
2078 {
2079     char sdp[2048];
2080     int i;
2081     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2082
2083     if (!avc)
2084         exit_program(1);
2085     for (i = 0; i < n; i++)
2086         avc[i] = output_files[i].ctx;
2087
2088     av_sdp_create(avc, n, sdp, sizeof(sdp));
2089     printf("SDP:\n%s\n", sdp);
2090     fflush(stdout);
2091     av_freep(&avc);
2092 }
2093
2094 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2095                              char *error, int error_len)
2096 {
2097     InputStream *ist = &input_streams[ist_index];
2098     if (ist->decoding_needed) {
2099         AVCodec *codec = ist->dec;
2100         if (!codec) {
2101             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2102                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2103             return AVERROR(EINVAL);
2104         }
2105         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2106             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2107                     ist->file_index, ist->st->index);
2108             return AVERROR(EINVAL);
2109         }
2110         assert_codec_experimental(ist->st->codec, 0);
2111         assert_avoptions(ist->opts);
2112     }
2113
2114     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;
2115     ist->next_pts = AV_NOPTS_VALUE;
2116     ist->is_start = 1;
2117
2118     return 0;
2119 }
2120
2121 static int transcode_init(OutputFile *output_files, int nb_output_files,
2122                           InputFile  *input_files,  int nb_input_files)
2123 {
2124     int ret = 0, i, j, k;
2125     AVFormatContext *oc;
2126     AVCodecContext *codec, *icodec;
2127     OutputStream *ost;
2128     InputStream *ist;
2129     char error[1024];
2130     int want_sdp = 1;
2131
2132     /* init framerate emulation */
2133     for (i = 0; i < nb_input_files; i++) {
2134         InputFile *ifile = &input_files[i];
2135         if (ifile->rate_emu)
2136             for (j = 0; j < ifile->nb_streams; j++)
2137                 input_streams[j + ifile->ist_index].start = av_gettime();
2138     }
2139
2140     /* output stream init */
2141     for (i = 0; i < nb_output_files; i++) {
2142         oc = output_files[i].ctx;
2143         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2144             av_dump_format(oc, i, oc->filename, 1);
2145             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2146             return AVERROR(EINVAL);
2147         }
2148     }
2149
2150     /* for each output stream, we compute the right encoding parameters */
2151     for (i = 0; i < nb_output_streams; i++) {
2152         ost = &output_streams[i];
2153         oc  = output_files[ost->file_index].ctx;
2154         ist = &input_streams[ost->source_index];
2155
2156         if (ost->attachment_filename)
2157             continue;
2158
2159         codec  = ost->st->codec;
2160         icodec = ist->st->codec;
2161
2162         ost->st->disposition          = ist->st->disposition;
2163         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2164         codec->chroma_sample_location = icodec->chroma_sample_location;
2165
2166         if (ost->stream_copy) {
2167             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2168
2169             if (extra_size > INT_MAX) {
2170                 return AVERROR(EINVAL);
2171             }
2172
2173             /* if stream_copy is selected, no need to decode or encode */
2174             codec->codec_id   = icodec->codec_id;
2175             codec->codec_type = icodec->codec_type;
2176
2177             if (!codec->codec_tag) {
2178                 if (!oc->oformat->codec_tag ||
2179                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2180                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2181                     codec->codec_tag = icodec->codec_tag;
2182             }
2183
2184             codec->bit_rate       = icodec->bit_rate;
2185             codec->rc_max_rate    = icodec->rc_max_rate;
2186             codec->rc_buffer_size = icodec->rc_buffer_size;
2187             codec->extradata      = av_mallocz(extra_size);
2188             if (!codec->extradata) {
2189                 return AVERROR(ENOMEM);
2190             }
2191             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2192             codec->extradata_size= icodec->extradata_size;
2193
2194             codec->time_base = ist->st->time_base;
2195             if(!strcmp(oc->oformat->name, "avi")) {
2196                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2197                                  && av_q2d(ist->st->time_base) < 1.0/500
2198                     || copy_tb==0){
2199                     codec->time_base = icodec->time_base;
2200                     codec->time_base.num *= icodec->ticks_per_frame;
2201                     codec->time_base.den *= 2;
2202                 }
2203             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
2204                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2205                                 && av_q2d(ist->st->time_base) < 1.0/500
2206                    || copy_tb==0){
2207                     codec->time_base = icodec->time_base;
2208                     codec->time_base.num *= icodec->ticks_per_frame;
2209                 }
2210             }
2211             av_reduce(&codec->time_base.num, &codec->time_base.den,
2212                         codec->time_base.num, codec->time_base.den, INT_MAX);
2213
2214             switch(codec->codec_type) {
2215             case AVMEDIA_TYPE_AUDIO:
2216                 if(audio_volume != 256) {
2217                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2218                     exit_program(1);
2219                 }
2220                 codec->channel_layout     = icodec->channel_layout;
2221                 codec->sample_rate        = icodec->sample_rate;
2222                 codec->channels           = icodec->channels;
2223                 codec->frame_size         = icodec->frame_size;
2224                 codec->audio_service_type = icodec->audio_service_type;
2225                 codec->block_align        = icodec->block_align;
2226                 break;
2227             case AVMEDIA_TYPE_VIDEO:
2228                 codec->pix_fmt            = icodec->pix_fmt;
2229                 codec->width              = icodec->width;
2230                 codec->height             = icodec->height;
2231                 codec->has_b_frames       = icodec->has_b_frames;
2232                 if (!codec->sample_aspect_ratio.num) {
2233                     codec->sample_aspect_ratio   =
2234                     ost->st->sample_aspect_ratio =
2235                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2236                         ist->st->codec->sample_aspect_ratio.num ?
2237                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2238                 }
2239                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2240                 break;
2241             case AVMEDIA_TYPE_SUBTITLE:
2242                 codec->width  = icodec->width;
2243                 codec->height = icodec->height;
2244                 break;
2245             case AVMEDIA_TYPE_DATA:
2246             case AVMEDIA_TYPE_ATTACHMENT:
2247                 break;
2248             default:
2249                 abort();
2250             }
2251         } else {
2252             if (!ost->enc)
2253                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2254
2255             ist->decoding_needed = 1;
2256             ost->encoding_needed = 1;
2257
2258             switch(codec->codec_type) {
2259             case AVMEDIA_TYPE_AUDIO:
2260                 ost->fifo = av_fifo_alloc(1024);
2261                 if (!ost->fifo) {
2262                     return AVERROR(ENOMEM);
2263                 }
2264                 if (!codec->sample_rate)
2265                     codec->sample_rate = icodec->sample_rate;
2266                 choose_sample_rate(ost->st, ost->enc);
2267                 codec->time_base = (AVRational){1, codec->sample_rate};
2268
2269                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2270                     codec->sample_fmt = icodec->sample_fmt;
2271                 choose_sample_fmt(ost->st, ost->enc);
2272
2273                 if (ost->audio_channels_mapped) {
2274                     /* the requested output channel is set to the number of
2275                      * -map_channel only if no -ac are specified */
2276                     if (!codec->channels) {
2277                         codec->channels       = ost->audio_channels_mapped;
2278                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2279                         if (!codec->channel_layout) {
2280                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2281                             exit_program(1);
2282                         }
2283                     }
2284                     /* fill unused channel mapping with -1 (which means a muted
2285                      * channel in case the number of output channels is bigger
2286                      * than the number of mapped channel) */
2287                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2288                         ost->audio_channels_map[j] = -1;
2289                 } else if (!codec->channels) {
2290                     codec->channels = icodec->channels;
2291                     codec->channel_layout = icodec->channel_layout;
2292                 }
2293                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2294                     codec->channel_layout = 0;
2295
2296                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2297                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2298                                             || codec->channel_layout != icodec->channel_layout;
2299                 icodec->request_channels  = codec->channels;
2300                 ost->resample_sample_fmt  = icodec->sample_fmt;
2301                 ost->resample_sample_rate = icodec->sample_rate;
2302                 ost->resample_channels    = icodec->channels;
2303                 break;
2304             case AVMEDIA_TYPE_VIDEO:
2305                 if (codec->pix_fmt == PIX_FMT_NONE)
2306                     codec->pix_fmt = icodec->pix_fmt;
2307                 choose_pixel_fmt(ost->st, ost->enc);
2308
2309                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2310                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2311                     exit_program(1);
2312                 }
2313
2314                 if (!codec->width || !codec->height) {
2315                     codec->width  = icodec->width;
2316                     codec->height = icodec->height;
2317                 }
2318
2319                 ost->video_resample = codec->width   != icodec->width  ||
2320                                       codec->height  != icodec->height ||
2321                                       codec->pix_fmt != icodec->pix_fmt;
2322                 if (ost->video_resample) {
2323                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2324                 }
2325
2326                 ost->resample_height  = icodec->height;
2327                 ost->resample_width   = icodec->width;
2328                 ost->resample_pix_fmt = icodec->pix_fmt;
2329
2330                 if (!ost->frame_rate.num)
2331                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2332                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2333                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2334                     ost->frame_rate = ost->enc->supported_framerates[idx];
2335                 }
2336                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2337                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2338                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2339                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2340                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2341                 }
2342                 for (j = 0; j < ost->forced_kf_count; j++)
2343                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2344                                                          AV_TIME_BASE_Q,
2345                                                          codec->time_base);
2346
2347 #if CONFIG_AVFILTER
2348                 if (configure_video_filters(ist, ost)) {
2349                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2350                     exit(1);
2351                 }
2352 #endif
2353                 break;
2354             case AVMEDIA_TYPE_SUBTITLE:
2355                 break;
2356             default:
2357                 abort();
2358                 break;
2359             }
2360             /* two pass mode */
2361             if (codec->codec_id != CODEC_ID_H264 &&
2362                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2363                 char logfilename[1024];
2364                 FILE *f;
2365
2366                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2367                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2368                          i);
2369                 if (codec->flags & CODEC_FLAG_PASS2) {
2370                     char  *logbuffer;
2371                     size_t logbuffer_size;
2372                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2373                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2374                                logfilename);
2375                         exit_program(1);
2376                     }
2377                     codec->stats_in = logbuffer;
2378                 }
2379                 if (codec->flags & CODEC_FLAG_PASS1) {
2380                     f = fopen(logfilename, "wb");
2381                     if (!f) {
2382                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2383                                logfilename, strerror(errno));
2384                         exit_program(1);
2385                     }
2386                     ost->logfile = f;
2387                 }
2388             }
2389         }
2390         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2391             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2392             int size        = codec->width * codec->height;
2393             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2394         }
2395     }
2396
2397     if (!bit_buffer)
2398         bit_buffer = av_malloc(bit_buffer_size);
2399     if (!bit_buffer) {
2400         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2401                bit_buffer_size);
2402         return AVERROR(ENOMEM);
2403     }
2404
2405     /* open each encoder */
2406     for (i = 0; i < nb_output_streams; i++) {
2407         ost = &output_streams[i];
2408         if (ost->encoding_needed) {
2409             AVCodec      *codec = ost->enc;
2410             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2411             if (!codec) {
2412                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2413                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2414                 ret = AVERROR(EINVAL);
2415                 goto dump_format;
2416             }
2417             if (dec->subtitle_header) {
2418                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2419                 if (!ost->st->codec->subtitle_header) {
2420                     ret = AVERROR(ENOMEM);
2421                     goto dump_format;
2422                 }
2423                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2424                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2425             }
2426             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2427                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2428                         ost->file_index, ost->index);
2429                 ret = AVERROR(EINVAL);
2430                 goto dump_format;
2431             }
2432             assert_codec_experimental(ost->st->codec, 1);
2433             assert_avoptions(ost->opts);
2434             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2435                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2436                                              " It takes bits/s as argument, not kbits/s\n");
2437             extra_size += ost->st->codec->extradata_size;
2438
2439             if (ost->st->codec->me_threshold)
2440                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2441         }
2442     }
2443
2444     /* init input streams */
2445     for (i = 0; i < nb_input_streams; i++)
2446         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2447             goto dump_format;
2448
2449     /* discard unused programs */
2450     for (i = 0; i < nb_input_files; i++) {
2451         InputFile *ifile = &input_files[i];
2452         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2453             AVProgram *p = ifile->ctx->programs[j];
2454             int discard  = AVDISCARD_ALL;
2455
2456             for (k = 0; k < p->nb_stream_indexes; k++)
2457                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2458                     discard = AVDISCARD_DEFAULT;
2459                     break;
2460                 }
2461             p->discard = discard;
2462         }
2463     }
2464
2465     /* open files and write file headers */
2466     for (i = 0; i < nb_output_files; i++) {
2467         oc = output_files[i].ctx;
2468         oc->interrupt_callback = int_cb;
2469         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2470             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2471             ret = AVERROR(EINVAL);
2472             goto dump_format;
2473         }
2474 //        assert_avoptions(output_files[i].opts);
2475         if (strcmp(oc->oformat->name, "rtp")) {
2476             want_sdp = 0;
2477         }
2478     }
2479
2480  dump_format:
2481     /* dump the file output parameters - cannot be done before in case
2482        of stream copy */
2483     for (i = 0; i < nb_output_files; i++) {
2484         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2485     }
2486
2487     /* dump the stream mapping */
2488     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2489     for (i = 0; i < nb_output_streams; i++) {
2490         ost = &output_streams[i];
2491
2492         if (ost->attachment_filename) {
2493             /* an attached file */
2494             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2495                    ost->attachment_filename, ost->file_index, ost->index);
2496             continue;
2497         }
2498         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2499                input_streams[ost->source_index].file_index,
2500                input_streams[ost->source_index].st->index,
2501                ost->file_index,
2502                ost->index);
2503         if (ost->audio_channels_mapped) {
2504             av_log(NULL, AV_LOG_INFO, " [ch:");
2505             for (j = 0; j < ost->audio_channels_mapped; j++)
2506                 if (ost->audio_channels_map[j] == -1)
2507                     av_log(NULL, AV_LOG_INFO, " M");
2508                 else
2509                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2510             av_log(NULL, AV_LOG_INFO, "]");
2511         }
2512         if (ost->sync_ist != &input_streams[ost->source_index])
2513             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2514                    ost->sync_ist->file_index,
2515                    ost->sync_ist->st->index);
2516         if (ost->stream_copy)
2517             av_log(NULL, AV_LOG_INFO, " (copy)");
2518         else
2519             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2520                    input_streams[ost->source_index].dec->name : "?",
2521                    ost->enc ? ost->enc->name : "?");
2522         av_log(NULL, AV_LOG_INFO, "\n");
2523     }
2524
2525     if (ret) {
2526         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2527         return ret;
2528     }
2529
2530     if (want_sdp) {
2531         print_sdp(output_files, nb_output_files);
2532     }
2533
2534     return 0;
2535 }
2536
2537 /*
2538  * The following code is the main loop of the file converter
2539  */
2540 static int transcode(OutputFile *output_files, int nb_output_files,
2541                      InputFile  *input_files,  int nb_input_files)
2542 {
2543     int ret, i;
2544     AVFormatContext *is, *os;
2545     OutputStream *ost;
2546     InputStream *ist;
2547     uint8_t *no_packet;
2548     int no_packet_count=0;
2549     int64_t timer_start;
2550     int key;
2551
2552     if (!(no_packet = av_mallocz(nb_input_files)))
2553         exit_program(1);
2554
2555     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2556     if (ret < 0)
2557         goto fail;
2558
2559     if (!using_stdin) {
2560         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2561     }
2562
2563     timer_start = av_gettime();
2564
2565     for(; received_sigterm == 0;) {
2566         int file_index, ist_index;
2567         AVPacket pkt;
2568         int64_t ipts_min;
2569         double opts_min;
2570         int64_t cur_time= av_gettime();
2571
2572         ipts_min= INT64_MAX;
2573         opts_min= 1e100;
2574         /* if 'q' pressed, exits */
2575         if (!using_stdin) {
2576             static int64_t last_time;
2577             if (received_nb_signals)
2578                 break;
2579             /* read_key() returns 0 on EOF */
2580             if(cur_time - last_time >= 100000 && !run_as_daemon){
2581                 key =  read_key();
2582                 last_time = cur_time;
2583             }else
2584                 key = -1;
2585             if (key == 'q')
2586                 break;
2587             if (key == '+') av_log_set_level(av_log_get_level()+10);
2588             if (key == '-') av_log_set_level(av_log_get_level()-10);
2589             if (key == 's') qp_hist     ^= 1;
2590             if (key == 'h'){
2591                 if (do_hex_dump){
2592                     do_hex_dump = do_pkt_dump = 0;
2593                 } else if(do_pkt_dump){
2594                     do_hex_dump = 1;
2595                 } else
2596                     do_pkt_dump = 1;
2597                 av_log_set_level(AV_LOG_DEBUG);
2598             }
2599 #if CONFIG_AVFILTER
2600             if (key == 'c' || key == 'C'){
2601                 char buf[4096], target[64], command[256], arg[256] = {0};
2602                 double time;
2603                 int k, n = 0;
2604                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2605                 i = 0;
2606                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2607                     if (k > 0)
2608                         buf[i++] = k;
2609                 buf[i] = 0;
2610                 if (k > 0 &&
2611                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2612                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2613                            target, time, command, arg);
2614                     for (i = 0; i < nb_output_streams; i++) {
2615                         ost = &output_streams[i];
2616                         if (ost->graph) {
2617                             if (time < 0) {
2618                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2619                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2620                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2621                             } else {
2622                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2623                             }
2624                         }
2625                     }
2626                 } else {
2627                     av_log(NULL, AV_LOG_ERROR,
2628                            "Parse error, at least 3 arguments were expected, "
2629                            "only %d given in string '%s'\n", n, buf);
2630                 }
2631             }
2632 #endif
2633             if (key == 'd' || key == 'D'){
2634                 int debug=0;
2635                 if(key == 'D') {
2636                     debug = input_streams[0].st->codec->debug<<1;
2637                     if(!debug) debug = 1;
2638                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2639                         debug += debug;
2640                 }else
2641                     if(scanf("%d", &debug)!=1)
2642                         fprintf(stderr,"error parsing debug value\n");
2643                 for(i=0;i<nb_input_streams;i++) {
2644                     input_streams[i].st->codec->debug = debug;
2645                 }
2646                 for(i=0;i<nb_output_streams;i++) {
2647                     ost = &output_streams[i];
2648                     ost->st->codec->debug = debug;
2649                 }
2650                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2651                 fprintf(stderr,"debug=%d\n", debug);
2652             }
2653             if (key == '?'){
2654                 fprintf(stderr, "key    function\n"
2655                                 "?      show this help\n"
2656                                 "+      increase verbosity\n"
2657                                 "-      decrease verbosity\n"
2658                                 "c      Send command to filtergraph\n"
2659                                 "D      cycle through available debug modes\n"
2660                                 "h      dump packets/hex press to cycle through the 3 states\n"
2661                                 "q      quit\n"
2662                                 "s      Show QP histogram\n"
2663                 );
2664             }
2665         }
2666
2667         /* select the stream that we must read now by looking at the
2668            smallest output pts */
2669         file_index = -1;
2670         for (i = 0; i < nb_output_streams; i++) {
2671             OutputFile *of;
2672             int64_t ipts;
2673             double  opts;
2674             ost = &output_streams[i];
2675             of = &output_files[ost->file_index];
2676             os = output_files[ost->file_index].ctx;
2677             ist = &input_streams[ost->source_index];
2678             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2679                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2680                 continue;
2681             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2682             ipts = ist->pts;
2683             if (!input_files[ist->file_index].eof_reached){
2684                 if(ipts < ipts_min) {
2685                     ipts_min = ipts;
2686                     if(input_sync ) file_index = ist->file_index;
2687                 }
2688                 if(opts < opts_min) {
2689                     opts_min = opts;
2690                     if(!input_sync) file_index = ist->file_index;
2691                 }
2692             }
2693             if (ost->frame_number >= ost->max_frames) {
2694                 int j;
2695                 for (j = 0; j < of->ctx->nb_streams; j++)
2696                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2697                 continue;
2698             }
2699         }
2700         /* if none, if is finished */
2701         if (file_index < 0) {
2702             if(no_packet_count){
2703                 no_packet_count=0;
2704                 memset(no_packet, 0, nb_input_files);
2705                 usleep(10000);
2706                 continue;
2707             }
2708             break;
2709         }
2710
2711         /* read a frame from it and output it in the fifo */
2712         is = input_files[file_index].ctx;
2713         ret= av_read_frame(is, &pkt);
2714         if(ret == AVERROR(EAGAIN)){
2715             no_packet[file_index]=1;
2716             no_packet_count++;
2717             continue;
2718         }
2719         if (ret < 0) {
2720             input_files[file_index].eof_reached = 1;
2721             if (opt_shortest)
2722                 break;
2723             else
2724                 continue;
2725         }
2726
2727         no_packet_count=0;
2728         memset(no_packet, 0, nb_input_files);
2729
2730         if (do_pkt_dump) {
2731             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2732                              is->streams[pkt.stream_index]);
2733         }
2734         /* the following test is needed in case new streams appear
2735            dynamically in stream : we ignore them */
2736         if (pkt.stream_index >= input_files[file_index].nb_streams)
2737             goto discard_packet;
2738         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2739         ist = &input_streams[ist_index];
2740         if (ist->discard)
2741             goto discard_packet;
2742
2743         if (pkt.dts != AV_NOPTS_VALUE)
2744             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2745         if (pkt.pts != AV_NOPTS_VALUE)
2746             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2747
2748         if(pkt.pts != AV_NOPTS_VALUE)
2749             pkt.pts *= ist->ts_scale;
2750         if(pkt.dts != AV_NOPTS_VALUE)
2751             pkt.dts *= ist->ts_scale;
2752
2753 //        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);
2754         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2755             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2756             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2757             int64_t delta= pkt_dts - ist->next_pts;
2758             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2759                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2760                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2761                 pkt_dts+1<ist->pts)&& !copy_ts){
2762                 input_files[ist->file_index].ts_offset -= delta;
2763                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2764                        delta, input_files[ist->file_index].ts_offset);
2765                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2766                 if(pkt.pts != AV_NOPTS_VALUE)
2767                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2768             }
2769         }
2770
2771         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2772         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2773
2774             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2775                    ist->file_index, ist->st->index);
2776             if (exit_on_error)
2777                 exit_program(1);
2778             av_free_packet(&pkt);
2779             continue;
2780         }
2781
2782     discard_packet:
2783         av_free_packet(&pkt);
2784
2785         /* dump report by using the output first video and audio streams */
2786         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2787     }
2788
2789     /* at the end of stream, we must flush the decoder buffers */
2790     for (i = 0; i < nb_input_streams; i++) {
2791         ist = &input_streams[i];
2792         if (ist->decoding_needed) {
2793             output_packet(ist, output_streams, nb_output_streams, NULL);
2794         }
2795     }
2796     flush_encoders(output_streams, nb_output_streams);
2797
2798     term_exit();
2799
2800     /* write the trailer if needed and close file */
2801     for(i=0;i<nb_output_files;i++) {
2802         os = output_files[i].ctx;
2803         av_write_trailer(os);
2804     }
2805
2806     /* dump report by using the first video and audio streams */
2807     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2808
2809     /* close each encoder */
2810     for (i = 0; i < nb_output_streams; i++) {
2811         ost = &output_streams[i];
2812         if (ost->encoding_needed) {
2813             av_freep(&ost->st->codec->stats_in);
2814             avcodec_close(ost->st->codec);
2815         }
2816 #if CONFIG_AVFILTER
2817         avfilter_graph_free(&ost->graph);
2818 #endif
2819     }
2820
2821     /* close each decoder */
2822     for (i = 0; i < nb_input_streams; i++) {
2823         ist = &input_streams[i];
2824         if (ist->decoding_needed) {
2825             avcodec_close(ist->st->codec);
2826         }
2827     }
2828
2829     /* finished ! */
2830     ret = 0;
2831
2832  fail:
2833     av_freep(&bit_buffer);
2834     av_freep(&no_packet);
2835
2836     if (output_streams) {
2837         for (i = 0; i < nb_output_streams; i++) {
2838             ost = &output_streams[i];
2839             if (ost) {
2840                 if (ost->stream_copy)
2841                     av_freep(&ost->st->codec->extradata);
2842                 if (ost->logfile) {
2843                     fclose(ost->logfile);
2844                     ost->logfile = NULL;
2845                 }
2846                 av_fifo_free(ost->fifo); /* works even if fifo is not
2847                                              initialized but set to zero */
2848                 av_freep(&ost->st->codec->subtitle_header);
2849                 av_free(ost->resample_frame.data[0]);
2850                 av_free(ost->forced_kf_pts);
2851                 if (ost->video_resample)
2852                     sws_freeContext(ost->img_resample_ctx);
2853                 swr_free(&ost->swr);
2854                 av_dict_free(&ost->opts);
2855             }
2856         }
2857     }
2858     return ret;
2859 }
2860
2861 static int opt_frame_crop(const char *opt, const char *arg)
2862 {
2863     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2864     return AVERROR(EINVAL);
2865 }
2866
2867 static int opt_pad(const char *opt, const char *arg)
2868 {
2869     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2870     return -1;
2871 }
2872
2873 static double parse_frame_aspect_ratio(const char *arg)
2874 {
2875     int x = 0, y = 0;
2876     double ar = 0;
2877     const char *p;
2878     char *end;
2879
2880     p = strchr(arg, ':');
2881     if (p) {
2882         x = strtol(arg, &end, 10);
2883         if (end == p)
2884             y = strtol(end+1, &end, 10);
2885         if (x > 0 && y > 0)
2886             ar = (double)x / (double)y;
2887     } else
2888         ar = strtod(arg, NULL);
2889
2890     if (!ar) {
2891         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2892         exit_program(1);
2893     }
2894     return ar;
2895 }
2896
2897 static int opt_video_channel(const char *opt, const char *arg)
2898 {
2899     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2900     return opt_default("channel", arg);
2901 }
2902
2903 static int opt_video_standard(const char *opt, const char *arg)
2904 {
2905     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2906     return opt_default("standard", arg);
2907 }
2908
2909 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2910 {
2911     audio_codec_name = arg;
2912     return parse_option(o, "codec:a", arg, options);
2913 }
2914
2915 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2916 {
2917     video_codec_name = arg;
2918     return parse_option(o, "codec:v", arg, options);
2919 }
2920
2921 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2922 {
2923     subtitle_codec_name = arg;
2924     return parse_option(o, "codec:s", arg, options);
2925 }
2926
2927 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2928 {
2929     return parse_option(o, "codec:d", arg, options);
2930 }
2931
2932 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2933 {
2934     StreamMap *m = NULL;
2935     int i, negative = 0, file_idx;
2936     int sync_file_idx = -1, sync_stream_idx;
2937     char *p, *sync;
2938     char *map;
2939
2940     if (*arg == '-') {
2941         negative = 1;
2942         arg++;
2943     }
2944     map = av_strdup(arg);
2945
2946     /* parse sync stream first, just pick first matching stream */
2947     if (sync = strchr(map, ',')) {
2948         *sync = 0;
2949         sync_file_idx = strtol(sync + 1, &sync, 0);
2950         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2951             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2952             exit_program(1);
2953         }
2954         if (*sync)
2955             sync++;
2956         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2957             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2958                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2959                 sync_stream_idx = i;
2960                 break;
2961             }
2962         if (i == input_files[sync_file_idx].nb_streams) {
2963             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2964                                        "match any streams.\n", arg);
2965             exit_program(1);
2966         }
2967     }
2968
2969
2970     file_idx = strtol(map, &p, 0);
2971     if (file_idx >= nb_input_files || file_idx < 0) {
2972         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2973         exit_program(1);
2974     }
2975     if (negative)
2976         /* disable some already defined maps */
2977         for (i = 0; i < o->nb_stream_maps; i++) {
2978             m = &o->stream_maps[i];
2979             if (file_idx == m->file_index &&
2980                 check_stream_specifier(input_files[m->file_index].ctx,
2981                                        input_files[m->file_index].ctx->streams[m->stream_index],
2982                                        *p == ':' ? p + 1 : p) > 0)
2983                 m->disabled = 1;
2984         }
2985     else
2986         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2987             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2988                         *p == ':' ? p + 1 : p) <= 0)
2989                 continue;
2990             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2991                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2992             m = &o->stream_maps[o->nb_stream_maps - 1];
2993
2994             m->file_index   = file_idx;
2995             m->stream_index = i;
2996
2997             if (sync_file_idx >= 0) {
2998                 m->sync_file_index   = sync_file_idx;
2999                 m->sync_stream_index = sync_stream_idx;
3000             } else {
3001                 m->sync_file_index   = file_idx;
3002                 m->sync_stream_index = i;
3003             }
3004         }
3005
3006     if (!m) {
3007         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3008         exit_program(1);
3009     }
3010
3011     av_freep(&map);
3012     return 0;
3013 }
3014
3015 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3016 {
3017     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3018                                 &o->nb_attachments, o->nb_attachments + 1);
3019     o->attachments[o->nb_attachments - 1] = arg;
3020     return 0;
3021 }
3022
3023 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3024 {
3025     int n;
3026     AVStream *st;
3027     AudioChannelMap *m;
3028
3029     o->audio_channel_maps =
3030         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3031                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3032     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3033
3034     /* muted channel syntax */
3035     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3036     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3037         m->file_idx = m->stream_idx = -1;
3038         if (n == 1)
3039             m->ofile_idx = m->ostream_idx = -1;
3040         return 0;
3041     }
3042
3043     /* normal syntax */
3044     n = sscanf(arg, "%d.%d.%d:%d.%d",
3045                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3046                &m->ofile_idx, &m->ostream_idx);
3047
3048     if (n != 3 && n != 5) {
3049         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3050                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3051         exit_program(1);
3052     }
3053
3054     if (n != 5) // only file.stream.channel specified
3055         m->ofile_idx = m->ostream_idx = -1;
3056
3057     /* check input */
3058     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3059         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3060                m->file_idx);
3061         exit_program(1);
3062     }
3063     if (m->stream_idx < 0 ||
3064         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3065         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3066                m->file_idx, m->stream_idx);
3067         exit_program(1);
3068     }
3069     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3070     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3071         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3072                m->file_idx, m->stream_idx);
3073         exit_program(1);
3074     }
3075     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3076         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3077                m->file_idx, m->stream_idx, m->channel_idx);
3078         exit_program(1);
3079     }
3080     return 0;
3081 }
3082
3083 static void parse_meta_type(char *arg, char *type, int *index)
3084 {
3085     if (*arg) {
3086         *type = *arg;
3087         switch (*arg) {
3088         case 'g':
3089             break;
3090         case 's':
3091         case 'c':
3092         case 'p':
3093             if (*(++arg) == ':')
3094                 *index = strtol(++arg, NULL, 0);
3095             break;
3096         default:
3097             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3098             exit_program(1);
3099         }
3100     } else
3101         *type = 'g';
3102 }
3103
3104 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3105 {
3106     MetadataMap *m, *m1;
3107     char *p;
3108
3109     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3110                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3111
3112     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3113     m->file = strtol(arg, &p, 0);
3114     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3115
3116     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3117     if (p = strchr(opt, ':'))
3118         parse_meta_type(p + 1, &m1->type, &m1->index);
3119     else
3120         m1->type = 'g';
3121
3122     if (m->type == 'g' || m1->type == 'g')
3123         o->metadata_global_manual = 1;
3124     if (m->type == 's' || m1->type == 's')
3125         o->metadata_streams_manual = 1;
3126     if (m->type == 'c' || m1->type == 'c')
3127         o->metadata_chapters_manual = 1;
3128
3129     return 0;
3130 }
3131
3132 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3133 {
3134     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3135                     "Use -map_metadata instead.\n");
3136     return opt_map_metadata(o, opt, arg);
3137 }
3138
3139 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3140 {
3141     char buf[128];
3142     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3143     struct tm time = *gmtime((time_t*)&recording_timestamp);
3144     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3145     parse_option(o, "metadata", buf, options);
3146
3147     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3148                                  "tag instead.\n", opt);
3149     return 0;
3150 }
3151
3152 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3153 {
3154     const char *codec_string = encoder ? "encoder" : "decoder";
3155     AVCodec *codec;
3156
3157     codec = encoder ?
3158         avcodec_find_encoder_by_name(name) :
3159         avcodec_find_decoder_by_name(name);
3160     if(!codec) {
3161         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3162         exit_program(1);
3163     }
3164     if(codec->type != type) {
3165         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3166         exit_program(1);
3167     }
3168     return codec;
3169 }
3170
3171 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3172 {
3173     char *codec_name = NULL;
3174
3175     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3176     if (codec_name) {
3177         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3178         st->codec->codec_id = codec->id;
3179         return codec;
3180     } else
3181         return avcodec_find_decoder(st->codec->codec_id);
3182 }
3183
3184 /**
3185  * Add all the streams from the given input file to the global
3186  * list of input streams.
3187  */
3188 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3189 {
3190     int i, rfps, rfps_base;
3191     char *next, *codec_tag = NULL;
3192
3193     for (i = 0; i < ic->nb_streams; i++) {
3194         AVStream *st = ic->streams[i];
3195         AVCodecContext *dec = st->codec;
3196         InputStream *ist;
3197
3198         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3199         ist = &input_streams[nb_input_streams - 1];
3200         ist->st = st;
3201         ist->file_index = nb_input_files;
3202         ist->discard = 1;
3203         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3204
3205         ist->ts_scale = 1.0;
3206         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3207
3208         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3209         if (codec_tag) {
3210             uint32_t tag = strtol(codec_tag, &next, 0);
3211             if (*next)
3212                 tag = AV_RL32(codec_tag);
3213             st->codec->codec_tag = tag;
3214         }
3215
3216         ist->dec = choose_decoder(o, ic, st);
3217
3218         switch (dec->codec_type) {
3219         case AVMEDIA_TYPE_AUDIO:
3220             if(!ist->dec)
3221                 ist->dec = avcodec_find_decoder(dec->codec_id);
3222             if(o->audio_disable)
3223                 st->discard= AVDISCARD_ALL;
3224             break;
3225         case AVMEDIA_TYPE_VIDEO:
3226             if(!ist->dec)
3227                 ist->dec = avcodec_find_decoder(dec->codec_id);
3228             rfps      = ic->streams[i]->r_frame_rate.num;
3229             rfps_base = ic->streams[i]->r_frame_rate.den;
3230             if (dec->lowres) {
3231                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3232             }
3233
3234             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3235
3236                 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",
3237                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3238                        (float)rfps / rfps_base, rfps, rfps_base);
3239             }
3240
3241             if (o->video_disable)
3242                 st->discard= AVDISCARD_ALL;
3243             else if(video_discard)
3244                 st->discard= video_discard;
3245             break;
3246         case AVMEDIA_TYPE_DATA:
3247             if (o->data_disable)
3248                 st->discard= AVDISCARD_ALL;
3249             break;
3250         case AVMEDIA_TYPE_SUBTITLE:
3251             if(!ist->dec)
3252                 ist->dec = avcodec_find_decoder(dec->codec_id);
3253             if(o->subtitle_disable)
3254                 st->discard = AVDISCARD_ALL;
3255             break;
3256         case AVMEDIA_TYPE_ATTACHMENT:
3257         case AVMEDIA_TYPE_UNKNOWN:
3258             break;
3259         default:
3260             abort();
3261         }
3262     }
3263 }
3264
3265 static void assert_file_overwrite(const char *filename)
3266 {
3267     if ((!file_overwrite || no_file_overwrite) &&
3268         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3269          av_strstart(filename, "file:", NULL))) {
3270         if (avio_check(filename, 0) == 0) {
3271             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3272                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3273                 fflush(stderr);
3274                 term_exit();
3275                 if (!read_yesno()) {
3276                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3277                     exit_program(1);
3278                 }
3279                 term_init();
3280             }
3281             else {
3282                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3283                 exit_program(1);
3284             }
3285         }
3286     }
3287 }
3288
3289 static void dump_attachment(AVStream *st, const char *filename)
3290 {
3291     int ret;
3292     AVIOContext *out = NULL;
3293     AVDictionaryEntry *e;
3294
3295     if (!st->codec->extradata_size) {
3296         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3297                nb_input_files - 1, st->index);
3298         return;
3299     }
3300     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3301         filename = e->value;
3302     if (!*filename) {
3303         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3304                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3305         exit_program(1);
3306     }
3307
3308     assert_file_overwrite(filename);
3309
3310     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3311         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3312                filename);
3313         exit_program(1);
3314     }
3315
3316     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3317     avio_flush(out);
3318     avio_close(out);
3319 }
3320
3321 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3322 {
3323     AVFormatContext *ic;
3324     AVInputFormat *file_iformat = NULL;
3325     int err, i, ret;
3326     int64_t timestamp;
3327     uint8_t buf[128];
3328     AVDictionary **opts;
3329     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3330
3331     if (o->format) {
3332         if (!(file_iformat = av_find_input_format(o->format))) {
3333             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3334             exit_program(1);
3335         }
3336     }
3337
3338     if (!strcmp(filename, "-"))
3339         filename = "pipe:";
3340
3341     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3342                     !strcmp(filename, "/dev/stdin");
3343
3344     /* get default parameters from command line */
3345     ic = avformat_alloc_context();
3346     if (!ic) {
3347         print_error(filename, AVERROR(ENOMEM));
3348         exit_program(1);
3349     }
3350     if (o->nb_audio_sample_rate) {
3351         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3352         av_dict_set(&format_opts, "sample_rate", buf, 0);
3353     }
3354     if (o->nb_audio_channels) {
3355         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3356         av_dict_set(&format_opts, "channels", buf, 0);
3357     }
3358     if (o->nb_frame_rates) {
3359         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3360     }
3361     if (o->nb_frame_sizes) {
3362         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3363     }
3364     if (o->nb_frame_pix_fmts)
3365         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3366
3367     ic->video_codec_id   = video_codec_name ?
3368         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3369     ic->audio_codec_id   = audio_codec_name ?
3370         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3371     ic->subtitle_codec_id= subtitle_codec_name ?
3372         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3373     ic->flags |= AVFMT_FLAG_NONBLOCK;
3374     ic->interrupt_callback = int_cb;
3375
3376     if (loop_input) {
3377         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3378         ic->loop_input = loop_input;
3379     }
3380
3381     /* open the input file with generic libav function */
3382     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3383     if (err < 0) {
3384         print_error(filename, err);
3385         exit_program(1);
3386     }
3387     assert_avoptions(format_opts);
3388
3389     /* apply forced codec ids */
3390     for (i = 0; i < ic->nb_streams; i++)
3391         choose_decoder(o, ic, ic->streams[i]);
3392
3393     /* Set AVCodecContext options for avformat_find_stream_info */
3394     opts = setup_find_stream_info_opts(ic, codec_opts);
3395     orig_nb_streams = ic->nb_streams;
3396
3397     /* If not enough info to get the stream parameters, we decode the
3398        first frames to get it. (used in mpeg case for example) */
3399     ret = avformat_find_stream_info(ic, opts);