wmall: remove tabs that leaked in from a merge and seem to have
[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= 0;
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         ost->audio_resample = 1;
881
882     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
883                        ost->resample_channels    != dec->channels   ||
884                        ost->resample_sample_rate != dec->sample_rate;
885
886     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
887         if (resample_changed) {
888             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",
889                    ist->file_index, ist->st->index,
890                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
891                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
892             ost->resample_sample_fmt  = dec->sample_fmt;
893             ost->resample_channels    = dec->channels;
894             ost->resample_sample_rate = dec->sample_rate;
895             swr_free(&ost->swr);
896         }
897         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
898         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
899             ost->resample_sample_fmt  == enc->sample_fmt &&
900             ost->resample_channels    == enc->channels   &&
901             ost->resample_sample_rate == enc->sample_rate) {
902             //ost->swr = NULL;
903             ost->audio_resample = 0;
904         } else {
905             ost->swr = swr_alloc_set_opts(ost->swr,
906                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
907                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
908                                           0, NULL);
909             if (ost->audio_channels_mapped)
910                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
911             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
912             if (ost->audio_channels_mapped) {
913                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
914                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
915             }
916             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
917             av_opt_set_int(ost->swr, "och", enc->channels, 0);
918             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
919             if(ost->swr && swr_init(ost->swr) < 0){
920                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
921                 swr_free(&ost->swr);
922             }
923
924             if (!ost->swr) {
925                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
926                         dec->channels, dec->sample_rate,
927                         enc->channels, enc->sample_rate);
928                 exit_program(1);
929             }
930         }
931     }
932
933     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
934
935     if(audio_sync_method){
936         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
937                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
938         int idelta = delta * dec->sample_rate / enc->sample_rate;
939         int byte_delta = idelta * isize * dec->channels;
940
941         //FIXME resample delay
942         if(fabs(delta) > 50){
943             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
944                 if(byte_delta < 0){
945                     byte_delta= FFMAX(byte_delta, -size);
946                     size += byte_delta;
947                     buf  -= byte_delta;
948                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
949                            -byte_delta / (isize * dec->channels));
950                     if(!size)
951                         return;
952                     ist->is_start=0;
953                 }else{
954                     input_tmp= av_realloc(input_tmp, byte_delta + size);
955
956                     if(byte_delta > allocated_for_size - size){
957                         allocated_for_size= byte_delta + (int64_t)size;
958                         goto need_realloc;
959                     }
960                     ist->is_start=0;
961
962                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
963                     memcpy(input_tmp + byte_delta, buf, size);
964                     buf= input_tmp;
965                     size += byte_delta;
966                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
967                 }
968             }else if(audio_sync_method>1){
969                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
970                 av_assert0(ost->audio_resample);
971                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
972                        delta, comp, enc->sample_rate);
973 //                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));
974                 swr_compensate(ost->swr, comp, enc->sample_rate);
975             }
976         }
977     }else
978         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
979                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
980
981     if (ost->audio_resample) {
982         buftmp = audio_buf;
983         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
984                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
985         size_out = size_out * enc->channels * osize;
986     } else {
987         buftmp = buf;
988         size_out = size;
989     }
990
991     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
992
993     /* now encode as many frames as possible */
994     if (enc->frame_size > 1) {
995         /* output resampled raw samples */
996         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
997             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
998             exit_program(1);
999         }
1000         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1001
1002         frame_bytes = enc->frame_size * osize * enc->channels;
1003
1004         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1005             AVPacket pkt;
1006             av_init_packet(&pkt);
1007
1008             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1009
1010             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1011
1012             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1013                                        (short *)audio_buf);
1014             if (ret < 0) {
1015                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1016                 exit_program(1);
1017             }
1018             audio_size += ret;
1019             pkt.stream_index= ost->index;
1020             pkt.data= audio_out;
1021             pkt.size= ret;
1022             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1023                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1024             pkt.flags |= AV_PKT_FLAG_KEY;
1025             write_frame(s, &pkt, enc, ost->bitstream_filters);
1026
1027             ost->sync_opts += enc->frame_size;
1028         }
1029     } else {
1030         AVPacket pkt;
1031         av_init_packet(&pkt);
1032
1033         ost->sync_opts += size_out / (osize * enc->channels);
1034
1035         /* output a pcm frame */
1036         /* determine the size of the coded buffer */
1037         size_out /= osize;
1038         if (coded_bps)
1039             size_out = size_out*coded_bps/8;
1040
1041         if(size_out > audio_out_size){
1042             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1043             exit_program(1);
1044         }
1045
1046         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1047         ret = avcodec_encode_audio(enc, audio_out, size_out,
1048                                    (short *)buftmp);
1049         if (ret < 0) {
1050             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1051             exit_program(1);
1052         }
1053         audio_size += ret;
1054         pkt.stream_index= ost->index;
1055         pkt.data= audio_out;
1056         pkt.size= ret;
1057         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1058             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1059         pkt.flags |= AV_PKT_FLAG_KEY;
1060         write_frame(s, &pkt, enc, ost->bitstream_filters);
1061     }
1062 }
1063
1064 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1065 {
1066     AVCodecContext *dec;
1067     AVPicture *picture2;
1068     AVPicture picture_tmp;
1069     uint8_t *buf = 0;
1070
1071     dec = ist->st->codec;
1072
1073     /* deinterlace : must be done before any resize */
1074     if (do_deinterlace) {
1075         int size;
1076
1077         /* create temporary picture */
1078         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1079         buf = av_malloc(size);
1080         if (!buf)
1081             return;
1082
1083         picture2 = &picture_tmp;
1084         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1085
1086         if(avpicture_deinterlace(picture2, picture,
1087                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1088             /* if error, do not deinterlace */
1089             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1090             av_free(buf);
1091             buf = NULL;
1092             picture2 = picture;
1093         }
1094     } else {
1095         picture2 = picture;
1096     }
1097
1098     if (picture != picture2)
1099         *picture = *picture2;
1100     *bufp = buf;
1101 }
1102
1103 static void do_subtitle_out(AVFormatContext *s,
1104                             OutputStream *ost,
1105                             InputStream *ist,
1106                             AVSubtitle *sub,
1107                             int64_t pts)
1108 {
1109     static uint8_t *subtitle_out = NULL;
1110     int subtitle_out_max_size = 1024 * 1024;
1111     int subtitle_out_size, nb, i;
1112     AVCodecContext *enc;
1113     AVPacket pkt;
1114
1115     if (pts == AV_NOPTS_VALUE) {
1116         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1117         if (exit_on_error)
1118             exit_program(1);
1119         return;
1120     }
1121
1122     enc = ost->st->codec;
1123
1124     if (!subtitle_out) {
1125         subtitle_out = av_malloc(subtitle_out_max_size);
1126     }
1127
1128     /* Note: DVB subtitle need one packet to draw them and one other
1129        packet to clear them */
1130     /* XXX: signal it in the codec context ? */
1131     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1132         nb = 2;
1133     else
1134         nb = 1;
1135
1136     for(i = 0; i < nb; i++) {
1137         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1138         // start_display_time is required to be 0
1139         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1140         sub->end_display_time -= sub->start_display_time;
1141         sub->start_display_time = 0;
1142         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1143                                                     subtitle_out_max_size, sub);
1144         if (subtitle_out_size < 0) {
1145             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1146             exit_program(1);
1147         }
1148
1149         av_init_packet(&pkt);
1150         pkt.stream_index = ost->index;
1151         pkt.data = subtitle_out;
1152         pkt.size = subtitle_out_size;
1153         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1154         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1155             /* XXX: the pts correction is handled here. Maybe handling
1156                it in the codec would be better */
1157             if (i == 0)
1158                 pkt.pts += 90 * sub->start_display_time;
1159             else
1160                 pkt.pts += 90 * sub->end_display_time;
1161         }
1162         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1163     }
1164 }
1165
1166 static int bit_buffer_size= 1024*256;
1167 static uint8_t *bit_buffer= NULL;
1168
1169 static void do_video_resample(OutputStream *ost,
1170                               InputStream *ist,
1171                               AVFrame *in_picture,
1172                               AVFrame **out_picture)
1173 {
1174 #if CONFIG_AVFILTER
1175     *out_picture = in_picture;
1176 #else
1177     AVCodecContext *dec = ist->st->codec;
1178     AVCodecContext *enc = ost->st->codec;
1179     int resample_changed = ost->resample_width   != dec->width  ||
1180                            ost->resample_height  != dec->height ||
1181                            ost->resample_pix_fmt != dec->pix_fmt;
1182
1183     *out_picture = in_picture;
1184     if (resample_changed) {
1185         av_log(NULL, AV_LOG_INFO,
1186                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1187                ist->file_index, ist->st->index,
1188                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1189                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1190         ost->resample_width   = dec->width;
1191         ost->resample_height  = dec->height;
1192         ost->resample_pix_fmt = dec->pix_fmt;
1193     }
1194
1195     ost->video_resample = dec->width   != enc->width  ||
1196                           dec->height  != enc->height ||
1197                           dec->pix_fmt != enc->pix_fmt;
1198
1199     if (ost->video_resample) {
1200         *out_picture = &ost->resample_frame;
1201         if (!ost->img_resample_ctx || resample_changed) {
1202             /* initialize the destination picture */
1203             if (!ost->resample_frame.data[0]) {
1204                 avcodec_get_frame_defaults(&ost->resample_frame);
1205                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1206                                     enc->width, enc->height)) {
1207                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1208                     exit_program(1);
1209                 }
1210             }
1211             /* initialize a new scaler context */
1212             sws_freeContext(ost->img_resample_ctx);
1213             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1214                                                    enc->width, enc->height, enc->pix_fmt,
1215                                                    ost->sws_flags, NULL, NULL, NULL);
1216             if (ost->img_resample_ctx == NULL) {
1217                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1218                 exit_program(1);
1219             }
1220         }
1221         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1222               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1223     }
1224 #endif
1225 }
1226
1227
1228 static void do_video_out(AVFormatContext *s,
1229                          OutputStream *ost,
1230                          InputStream *ist,
1231                          AVFrame *in_picture,
1232                          int *frame_size, float quality)
1233 {
1234     int nb_frames, i, ret, format_video_sync;
1235     AVFrame *final_picture;
1236     AVCodecContext *enc;
1237     double sync_ipts;
1238     double duration = 0;
1239
1240     enc = ost->st->codec;
1241
1242     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1243         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1244         if(ist->st->avg_frame_rate.num)
1245             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1246
1247         duration /= av_q2d(enc->time_base);
1248     }
1249
1250     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1251
1252     /* by default, we output a single frame */
1253     nb_frames = 1;
1254
1255     *frame_size = 0;
1256
1257     format_video_sync = video_sync_method;
1258     if (format_video_sync < 0)
1259         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1260
1261     if (format_video_sync) {
1262         double vdelta = sync_ipts - ost->sync_opts + duration;
1263         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1264         if (vdelta < -1.1)
1265             nb_frames = 0;
1266         else if (format_video_sync == 2) {
1267             if(vdelta<=-0.6){
1268                 nb_frames=0;
1269             }else if(vdelta>0.6)
1270                 ost->sync_opts= lrintf(sync_ipts);
1271         }else if (vdelta > 1.1)
1272             nb_frames = lrintf(vdelta);
1273 //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);
1274         if (nb_frames == 0){
1275             ++nb_frames_drop;
1276             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1277         }else if (nb_frames > 1) {
1278             nb_frames_dup += nb_frames - 1;
1279             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1280         }
1281     }else
1282         ost->sync_opts= lrintf(sync_ipts);
1283
1284     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1285     if (nb_frames <= 0)
1286         return;
1287
1288     do_video_resample(ost, ist, in_picture, &final_picture);
1289
1290     /* duplicates frame if needed */
1291     for(i=0;i<nb_frames;i++) {
1292         AVPacket pkt;
1293         av_init_packet(&pkt);
1294         pkt.stream_index= ost->index;
1295
1296         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1297             /* raw pictures are written as AVPicture structure to
1298                avoid any copies. We support temporarily the older
1299                method. */
1300             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1301             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1302             pkt.data= (uint8_t *)final_picture;
1303             pkt.size=  sizeof(AVPicture);
1304             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1305             pkt.flags |= AV_PKT_FLAG_KEY;
1306
1307             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1308         } else {
1309             AVFrame big_picture;
1310
1311             big_picture= *final_picture;
1312             /* better than nothing: use input picture interlaced
1313                settings */
1314             big_picture.interlaced_frame = in_picture->interlaced_frame;
1315             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1316                 if (ost->top_field_first == -1)
1317                     big_picture.top_field_first = in_picture->top_field_first;
1318                 else
1319                     big_picture.top_field_first = !!ost->top_field_first;
1320             }
1321
1322             /* handles same_quant here. This is not correct because it may
1323                not be a global option */
1324             big_picture.quality = quality;
1325             if (!enc->me_threshold)
1326                 big_picture.pict_type = 0;
1327 //            big_picture.pts = AV_NOPTS_VALUE;
1328             big_picture.pts= ost->sync_opts;
1329 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1330 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1331             if (ost->forced_kf_index < ost->forced_kf_count &&
1332                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1333                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1334                 ost->forced_kf_index++;
1335             }
1336             ret = avcodec_encode_video(enc,
1337                                        bit_buffer, bit_buffer_size,
1338                                        &big_picture);
1339             if (ret < 0) {
1340                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1341                 exit_program(1);
1342             }
1343
1344             if(ret>0){
1345                 pkt.data= bit_buffer;
1346                 pkt.size= ret;
1347                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1348                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1349 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1350    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1351    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1352
1353                 if(enc->coded_frame->key_frame)
1354                     pkt.flags |= AV_PKT_FLAG_KEY;
1355                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1356                 *frame_size = ret;
1357                 video_size += ret;
1358                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1359                 //        enc->frame_number-1, ret, enc->pict_type);
1360                 /* if two pass, output log */
1361                 if (ost->logfile && enc->stats_out) {
1362                     fprintf(ost->logfile, "%s", enc->stats_out);
1363                 }
1364             }
1365         }
1366         ost->sync_opts++;
1367         ost->frame_number++;
1368     }
1369 }
1370
1371 static double psnr(double d)
1372 {
1373     return -10.0*log(d)/log(10.0);
1374 }
1375
1376 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1377                            int frame_size)
1378 {
1379     AVCodecContext *enc;
1380     int frame_number;
1381     double ti1, bitrate, avg_bitrate;
1382
1383     /* this is executed just the first time do_video_stats is called */
1384     if (!vstats_file) {
1385         vstats_file = fopen(vstats_filename, "w");
1386         if (!vstats_file) {
1387             perror("fopen");
1388             exit_program(1);
1389         }
1390     }
1391
1392     enc = ost->st->codec;
1393     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1394         frame_number = ost->frame_number;
1395         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1396         if (enc->flags&CODEC_FLAG_PSNR)
1397             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1398
1399         fprintf(vstats_file,"f_size= %6d ", frame_size);
1400         /* compute pts value */
1401         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1402         if (ti1 < 0.01)
1403             ti1 = 0.01;
1404
1405         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1406         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1407         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1408             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1409         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1410     }
1411 }
1412
1413 static void print_report(OutputFile *output_files,
1414                          OutputStream *ost_table, int nb_ostreams,
1415                          int is_last_report, int64_t timer_start, int64_t cur_time)
1416 {
1417     char buf[1024];
1418     OutputStream *ost;
1419     AVFormatContext *oc;
1420     int64_t total_size;
1421     AVCodecContext *enc;
1422     int frame_number, vid, i;
1423     double bitrate;
1424     int64_t pts = INT64_MAX;
1425     static int64_t last_time = -1;
1426     static int qp_histogram[52];
1427     int hours, mins, secs, us;
1428
1429     if (!print_stats && !is_last_report)
1430         return;
1431
1432     if (!is_last_report) {
1433         if (last_time == -1) {
1434             last_time = cur_time;
1435             return;
1436         }
1437         if ((cur_time - last_time) < 500000)
1438             return;
1439         last_time = cur_time;
1440     }
1441
1442
1443     oc = output_files[0].ctx;
1444
1445     total_size = avio_size(oc->pb);
1446     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1447         total_size= avio_tell(oc->pb);
1448         if (total_size < 0)
1449             total_size = 0;
1450     }
1451
1452     buf[0] = '\0';
1453     vid = 0;
1454     for(i=0;i<nb_ostreams;i++) {
1455         float q = -1;
1456         ost = &ost_table[i];
1457         enc = ost->st->codec;
1458         if (!ost->stream_copy && enc->coded_frame)
1459             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1460         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1461             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1462         }
1463         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1464             float t = (cur_time-timer_start) / 1000000.0;
1465
1466             frame_number = ost->frame_number;
1467             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1468                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1469             if(is_last_report)
1470                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1471             if(qp_hist){
1472                 int j;
1473                 int qp = lrintf(q);
1474                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1475                     qp_histogram[qp]++;
1476                 for(j=0; j<32; j++)
1477                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1478             }
1479             if (enc->flags&CODEC_FLAG_PSNR){
1480                 int j;
1481                 double error, error_sum=0;
1482                 double scale, scale_sum=0;
1483                 char type[3]= {'Y','U','V'};
1484                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1485                 for(j=0; j<3; j++){
1486                     if(is_last_report){
1487                         error= enc->error[j];
1488                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1489                     }else{
1490                         error= enc->coded_frame->error[j];
1491                         scale= enc->width*enc->height*255.0*255.0;
1492                     }
1493                     if(j) scale/=4;
1494                     error_sum += error;
1495                     scale_sum += scale;
1496                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1497                 }
1498                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1499             }
1500             vid = 1;
1501         }
1502         /* compute min output value */
1503         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1504                                       ost->st->time_base, AV_TIME_BASE_Q));
1505     }
1506
1507     secs = pts / AV_TIME_BASE;
1508     us = pts % AV_TIME_BASE;
1509     mins = secs / 60;
1510     secs %= 60;
1511     hours = mins / 60;
1512     mins %= 60;
1513
1514     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1515
1516     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1517              "size=%8.0fkB time=", total_size / 1024.0);
1518     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1519              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1520              (100 * us) / AV_TIME_BASE);
1521     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1522              "bitrate=%6.1fkbits/s", bitrate);
1523
1524     if (nb_frames_dup || nb_frames_drop)
1525         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1526                 nb_frames_dup, nb_frames_drop);
1527
1528     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1529
1530     fflush(stderr);
1531
1532     if (is_last_report) {
1533         int64_t raw= audio_size + video_size + extra_size;
1534         av_log(NULL, AV_LOG_INFO, "\n");
1535         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1536                video_size/1024.0,
1537                audio_size/1024.0,
1538                extra_size/1024.0,
1539                100.0*(total_size - raw)/raw
1540         );
1541         if(video_size + audio_size + extra_size == 0){
1542             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1543         }
1544     }
1545 }
1546
1547 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1548 {
1549     int i, ret;
1550
1551     for (i = 0; i < nb_ostreams; i++) {
1552         OutputStream   *ost = &ost_table[i];
1553         AVCodecContext *enc = ost->st->codec;
1554         AVFormatContext *os = output_files[ost->file_index].ctx;
1555
1556         if (!ost->encoding_needed)
1557             continue;
1558
1559         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1560             continue;
1561         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1562             continue;
1563
1564         for(;;) {
1565             AVPacket pkt;
1566             int fifo_bytes;
1567             av_init_packet(&pkt);
1568             pkt.stream_index= ost->index;
1569
1570             switch (ost->st->codec->codec_type) {
1571             case AVMEDIA_TYPE_AUDIO:
1572                 fifo_bytes = av_fifo_size(ost->fifo);
1573                 ret = 0;
1574                 /* encode any samples remaining in fifo */
1575                 if (fifo_bytes > 0) {
1576                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1577                     int fs_tmp = enc->frame_size;
1578
1579                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1580                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1581                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1582                     } else { /* pad */
1583                         int frame_bytes = enc->frame_size*osize*enc->channels;
1584                         if (allocated_audio_buf_size < frame_bytes)
1585                             exit_program(1);
1586                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1587                     }
1588
1589                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1590                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1591                                               ost->st->time_base.num, enc->sample_rate);
1592                     enc->frame_size = fs_tmp;
1593                 }
1594                 if (ret <= 0) {
1595                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1596                 }
1597                 if (ret < 0) {
1598                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1599                     exit_program(1);
1600                 }
1601                 audio_size += ret;
1602                 pkt.flags |= AV_PKT_FLAG_KEY;
1603                 break;
1604             case AVMEDIA_TYPE_VIDEO:
1605                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1606                 if (ret < 0) {
1607                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1608                     exit_program(1);
1609                 }
1610                 video_size += ret;
1611                 if(enc->coded_frame && enc->coded_frame->key_frame)
1612                     pkt.flags |= AV_PKT_FLAG_KEY;
1613                 if (ost->logfile && enc->stats_out) {
1614                     fprintf(ost->logfile, "%s", enc->stats_out);
1615                 }
1616                 break;
1617             default:
1618                 ret=-1;
1619             }
1620
1621             if (ret <= 0)
1622                 break;
1623             pkt.data = bit_buffer;
1624             pkt.size = ret;
1625             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1626                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1627             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1628         }
1629     }
1630 }
1631
1632 /*
1633  * Check whether a packet from ist should be written into ost at this time
1634  */
1635 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1636 {
1637     OutputFile *of = &output_files[ost->file_index];
1638     int ist_index  = ist - input_streams;
1639
1640     if (ost->source_index != ist_index)
1641         return 0;
1642
1643     if (of->start_time && ist->pts < of->start_time)
1644         return 0;
1645
1646     if (of->recording_time != INT64_MAX &&
1647         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1648                       (AVRational){1, 1000000}) >= 0) {
1649         ost->is_past_recording_time = 1;
1650         return 0;
1651     }
1652
1653     return 1;
1654 }
1655
1656 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1657 {
1658     OutputFile *of = &output_files[ost->file_index];
1659     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1660     AVPicture pict;
1661     AVPacket opkt;
1662
1663     av_init_packet(&opkt);
1664
1665     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1666         !ost->copy_initial_nonkeyframes)
1667         return;
1668
1669     /* force the input stream PTS */
1670     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1671         audio_size += pkt->size;
1672     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1673         video_size += pkt->size;
1674         ost->sync_opts++;
1675     }
1676
1677     opkt.stream_index = ost->index;
1678     if (pkt->pts != AV_NOPTS_VALUE)
1679         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1680     else
1681         opkt.pts = AV_NOPTS_VALUE;
1682
1683     if (pkt->dts == AV_NOPTS_VALUE)
1684         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1685     else
1686         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1687     opkt.dts -= ost_tb_start_time;
1688
1689     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1690     opkt.flags    = pkt->flags;
1691
1692     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1693     if(   ost->st->codec->codec_id != CODEC_ID_H264
1694        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1695        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1696        ) {
1697         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1698             opkt.destruct = av_destruct_packet;
1699     } else {
1700         opkt.data = pkt->data;
1701         opkt.size = pkt->size;
1702     }
1703     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1704         /* store AVPicture in AVPacket, as expected by the output format */
1705         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1706         opkt.data = (uint8_t *)&pict;
1707         opkt.size = sizeof(AVPicture);
1708         opkt.flags |= AV_PKT_FLAG_KEY;
1709     }
1710
1711     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1712     ost->st->codec->frame_number++;
1713     ost->frame_number++;
1714     av_free_packet(&opkt);
1715 }
1716
1717 static void rate_emu_sleep(InputStream *ist)
1718 {
1719     if (input_files[ist->file_index].rate_emu) {
1720         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1721         int64_t now = av_gettime() - ist->start;
1722         if (pts > now)
1723             usleep(pts - now);
1724     }
1725 }
1726
1727 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1728 {
1729     static unsigned int samples_size = 0;
1730     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1731     uint8_t *decoded_data_buf  = NULL;
1732     int      decoded_data_size = 0;
1733     int i, ret;
1734
1735     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1736         av_free(samples);
1737         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1738         samples      = av_malloc(samples_size);
1739     }
1740     decoded_data_size = samples_size;
1741
1742     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1743                                 pkt);
1744     if (ret < 0)
1745         return ret;
1746     *got_output  = decoded_data_size > 0;
1747
1748     /* Some bug in mpeg audio decoder gives */
1749     /* decoded_data_size < 0, it seems they are overflows */
1750     if (!*got_output) {
1751         /* no audio frame */
1752         return ret;
1753     }
1754
1755     decoded_data_buf = (uint8_t *)samples;
1756     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1757                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1758
1759     // preprocess audio (volume)
1760     if (audio_volume != 256) {
1761         switch (ist->st->codec->sample_fmt) {
1762         case AV_SAMPLE_FMT_U8:
1763         {
1764             uint8_t *volp = samples;
1765             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1766                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1767                 *volp++ = av_clip_uint8(v);
1768             }
1769             break;
1770         }
1771         case AV_SAMPLE_FMT_S16:
1772         {
1773             int16_t *volp = samples;
1774             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1775                 int v = ((*volp) * audio_volume + 128) >> 8;
1776                 *volp++ = av_clip_int16(v);
1777             }
1778             break;
1779         }
1780         case AV_SAMPLE_FMT_S32:
1781         {
1782             int32_t *volp = samples;
1783             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1784                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1785                 *volp++ = av_clipl_int32(v);
1786             }
1787             break;
1788         }
1789         case AV_SAMPLE_FMT_FLT:
1790         {
1791             float *volp = samples;
1792             float scale = audio_volume / 256.f;
1793             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1794                 *volp++ *= scale;
1795             }
1796             break;
1797         }
1798         case AV_SAMPLE_FMT_DBL:
1799         {
1800             double *volp = samples;
1801             double scale = audio_volume / 256.;
1802             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1803                 *volp++ *= scale;
1804             }
1805             break;
1806         }
1807         default:
1808             av_log(NULL, AV_LOG_FATAL,
1809                    "Audio volume adjustment on sample format %s is not supported.\n",
1810                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1811             exit_program(1);
1812         }
1813     }
1814
1815     rate_emu_sleep(ist);
1816
1817     for (i = 0; i < nb_output_streams; i++) {
1818         OutputStream *ost = &output_streams[i];
1819
1820         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1821             continue;
1822         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1823                      decoded_data_buf, decoded_data_size);
1824     }
1825     return ret;
1826 }
1827
1828 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1829 {
1830     AVFrame *decoded_frame, *filtered_frame = NULL;
1831     void *buffer_to_free = NULL;
1832     int i, ret = 0;
1833     float quality = 0;
1834 #if CONFIG_AVFILTER
1835     int frame_available = 1;
1836 #endif
1837
1838     if (!(decoded_frame = avcodec_alloc_frame()))
1839         return AVERROR(ENOMEM);
1840     pkt->pts  = *pkt_pts;
1841     pkt->dts  = *pkt_dts;
1842     *pkt_pts  = AV_NOPTS_VALUE;
1843
1844     if(*pkt_dts != AV_NOPTS_VALUE && ist->st->codec->time_base.num != 0) {
1845         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1846         *pkt_dts += ((int64_t)AV_TIME_BASE *
1847                           ist->st->codec->time_base.num * ticks) /
1848             ist->st->codec->time_base.den;
1849     }else
1850         *pkt_dts = AV_NOPTS_VALUE;
1851
1852     ret = avcodec_decode_video2(ist->st->codec,
1853                                 decoded_frame, got_output, pkt);
1854     if (ret < 0)
1855         goto fail;
1856
1857     quality = same_quant ? decoded_frame->quality : 0;
1858     if (!*got_output) {
1859         /* no picture yet */
1860         av_freep(&decoded_frame);
1861         return ret;
1862     }
1863
1864     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1865         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1866
1867     if (ist->st->codec->time_base.num != 0) {
1868         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1869                                            ist->st->codec->ticks_per_frame;
1870         ist->next_pts += ((int64_t)AV_TIME_BASE *
1871                           ist->st->codec->time_base.num * ticks) /
1872                           ist->st->codec->time_base.den;
1873     }
1874     pkt->size = 0;
1875
1876     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1877
1878 #if CONFIG_AVFILTER
1879     for(i=0;i<nb_output_streams;i++) {
1880         OutputStream *ost = ost = &output_streams[i];
1881         if(check_output_constraints(ist, ost)){
1882             if (!decoded_frame->sample_aspect_ratio.num)
1883                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1884             decoded_frame->pts = ist->pts;
1885
1886             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1887         }
1888     }
1889 #endif
1890
1891     rate_emu_sleep(ist);
1892
1893     for (i = 0; i < nb_output_streams; i++) {
1894         OutputStream *ost = &output_streams[i];
1895         int frame_size;
1896
1897         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1898             continue;
1899
1900 #if CONFIG_AVFILTER
1901         if (ost->input_video_filter) {
1902             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1903         }
1904         while (frame_available) {
1905             if (ost->output_video_filter) {
1906                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1907                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1908                     goto cont;
1909                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1910                     ret = AVERROR(ENOMEM);
1911                     goto fail;
1912                 }
1913                 *filtered_frame= *decoded_frame; //for me_threshold
1914                 if (ost->picref) {
1915                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1916                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1917                 }
1918             }
1919             if (ost->picref->video && !ost->frame_aspect_ratio)
1920                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1921 #else
1922             filtered_frame = decoded_frame;
1923 #endif
1924
1925             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1926                          same_quant ? quality : ost->st->codec->global_quality);
1927             if (vstats_filename && frame_size)
1928                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1929 #if CONFIG_AVFILTER
1930             cont:
1931             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1932             avfilter_unref_buffer(ost->picref);
1933         }
1934         av_freep(&filtered_frame);
1935 #endif
1936     }
1937
1938 fail:
1939     av_free(buffer_to_free);
1940     av_freep(&decoded_frame);
1941     return ret;
1942 }
1943
1944 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1945 {
1946     AVSubtitle subtitle;
1947     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1948                                           &subtitle, got_output, pkt);
1949     if (ret < 0)
1950         return ret;
1951     if (!*got_output)
1952         return ret;
1953
1954     rate_emu_sleep(ist);
1955
1956     for (i = 0; i < nb_output_streams; i++) {
1957         OutputStream *ost = &output_streams[i];
1958
1959         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1960             continue;
1961
1962         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1963     }
1964
1965     avsubtitle_free(&subtitle);
1966     return ret;
1967 }
1968
1969 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1970 static int output_packet(InputStream *ist,
1971                          OutputStream *ost_table, int nb_ostreams,
1972                          const AVPacket *pkt)
1973 {
1974     int ret = 0, i;
1975     int got_output;
1976     int64_t pkt_dts = AV_NOPTS_VALUE;
1977     int64_t pkt_pts = AV_NOPTS_VALUE;
1978
1979     AVPacket avpkt;
1980
1981     if (ist->next_pts == AV_NOPTS_VALUE)
1982         ist->next_pts = ist->pts;
1983
1984     if (pkt == NULL) {
1985         /* EOF handling */
1986         av_init_packet(&avpkt);
1987         avpkt.data = NULL;
1988         avpkt.size = 0;
1989         goto handle_eof;
1990     } else {
1991         avpkt = *pkt;
1992     }
1993
1994     if(pkt->dts != AV_NOPTS_VALUE){
1995         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1996             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1997         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1998     }
1999     if(pkt->pts != AV_NOPTS_VALUE)
2000         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2001
2002     //while we have more to decode or while the decoder did output something on EOF
2003     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2004     handle_eof:
2005
2006         ist->pts = ist->next_pts;
2007
2008         if (avpkt.size && avpkt.size != pkt->size) {
2009             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2010                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2011             ist->showed_multi_packet_warning = 1;
2012         }
2013
2014         switch(ist->st->codec->codec_type) {
2015         case AVMEDIA_TYPE_AUDIO:
2016             ret = transcode_audio    (ist, &avpkt, &got_output);
2017             break;
2018         case AVMEDIA_TYPE_VIDEO:
2019             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2020             break;
2021         case AVMEDIA_TYPE_SUBTITLE:
2022             ret = transcode_subtitles(ist, &avpkt, &got_output);
2023             break;
2024         default:
2025             return -1;
2026         }
2027
2028         if (ret < 0)
2029             return ret;
2030         // touch data and size only if not EOF
2031         if (pkt) {
2032             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2033                 ret = avpkt.size;
2034             avpkt.data += ret;
2035             avpkt.size -= ret;
2036         }
2037         if (!got_output) {
2038             continue;
2039         }
2040     }
2041
2042     /* handle stream copy */
2043     if (!ist->decoding_needed) {
2044         rate_emu_sleep(ist);
2045         switch (ist->st->codec->codec_type) {
2046         case AVMEDIA_TYPE_AUDIO:
2047             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2048                              ist->st->codec->sample_rate;
2049             break;
2050         case AVMEDIA_TYPE_VIDEO:
2051             if (ist->st->codec->time_base.num != 0) {
2052                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2053                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2054                                   ist->st->codec->time_base.num * ticks) /
2055                                   ist->st->codec->time_base.den;
2056             }
2057             break;
2058         }
2059     }
2060     for (i = 0; pkt && i < nb_ostreams; i++) {
2061         OutputStream *ost = &ost_table[i];
2062
2063         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2064             continue;
2065
2066         do_streamcopy(ist, ost, pkt);
2067     }
2068
2069     return 0;
2070 }
2071
2072 static void print_sdp(OutputFile *output_files, int n)
2073 {
2074     char sdp[2048];
2075     int i;
2076     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2077
2078     if (!avc)
2079         exit_program(1);
2080     for (i = 0; i < n; i++)
2081         avc[i] = output_files[i].ctx;
2082
2083     av_sdp_create(avc, n, sdp, sizeof(sdp));
2084     printf("SDP:\n%s\n", sdp);
2085     fflush(stdout);
2086     av_freep(&avc);
2087 }
2088
2089 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2090                              char *error, int error_len)
2091 {
2092     InputStream *ist = &input_streams[ist_index];
2093     if (ist->decoding_needed) {
2094         AVCodec *codec = ist->dec;
2095         if (!codec) {
2096             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2097                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2098             return AVERROR(EINVAL);
2099         }
2100         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2101             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2102                     ist->file_index, ist->st->index);
2103             return AVERROR(EINVAL);
2104         }
2105         assert_codec_experimental(ist->st->codec, 0);
2106         assert_avoptions(ist->opts);
2107     }
2108
2109     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;
2110     ist->next_pts = AV_NOPTS_VALUE;
2111     ist->is_start = 1;
2112
2113     return 0;
2114 }
2115
2116 static int transcode_init(OutputFile *output_files, int nb_output_files,
2117                           InputFile  *input_files,  int nb_input_files)
2118 {
2119     int ret = 0, i, j, k;
2120     AVFormatContext *oc;
2121     AVCodecContext *codec, *icodec;
2122     OutputStream *ost;
2123     InputStream *ist;
2124     char error[1024];
2125     int want_sdp = 1;
2126
2127     /* init framerate emulation */
2128     for (i = 0; i < nb_input_files; i++) {
2129         InputFile *ifile = &input_files[i];
2130         if (ifile->rate_emu)
2131             for (j = 0; j < ifile->nb_streams; j++)
2132                 input_streams[j + ifile->ist_index].start = av_gettime();
2133     }
2134
2135     /* output stream init */
2136     for (i = 0; i < nb_output_files; i++) {
2137         oc = output_files[i].ctx;
2138         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2139             av_dump_format(oc, i, oc->filename, 1);
2140             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2141             return AVERROR(EINVAL);
2142         }
2143     }
2144
2145     /* for each output stream, we compute the right encoding parameters */
2146     for (i = 0; i < nb_output_streams; i++) {
2147         ost = &output_streams[i];
2148         oc  = output_files[ost->file_index].ctx;
2149         ist = &input_streams[ost->source_index];
2150
2151         if (ost->attachment_filename)
2152             continue;
2153
2154         codec  = ost->st->codec;
2155         icodec = ist->st->codec;
2156
2157         ost->st->disposition          = ist->st->disposition;
2158         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2159         codec->chroma_sample_location = icodec->chroma_sample_location;
2160
2161         if (ost->stream_copy) {
2162             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2163
2164             if (extra_size > INT_MAX) {
2165                 return AVERROR(EINVAL);
2166             }
2167
2168             /* if stream_copy is selected, no need to decode or encode */
2169             codec->codec_id   = icodec->codec_id;
2170             codec->codec_type = icodec->codec_type;
2171
2172             if (!codec->codec_tag) {
2173                 if (!oc->oformat->codec_tag ||
2174                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2175                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2176                     codec->codec_tag = icodec->codec_tag;
2177             }
2178
2179             codec->bit_rate       = icodec->bit_rate;
2180             codec->rc_max_rate    = icodec->rc_max_rate;
2181             codec->rc_buffer_size = icodec->rc_buffer_size;
2182             codec->extradata      = av_mallocz(extra_size);
2183             if (!codec->extradata) {
2184                 return AVERROR(ENOMEM);
2185             }
2186             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2187             codec->extradata_size= icodec->extradata_size;
2188
2189             codec->time_base = ist->st->time_base;
2190             if(!strcmp(oc->oformat->name, "avi")) {
2191                 if (!copy_tb &&
2192                     av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) &&
2193                     av_q2d(ist->st->time_base) < 1.0/500){
2194                     codec->time_base = icodec->time_base;
2195                     codec->time_base.num *= icodec->ticks_per_frame;
2196                     codec->time_base.den *= 2;
2197                 }
2198             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
2199                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2200                     codec->time_base = icodec->time_base;
2201                     codec->time_base.num *= icodec->ticks_per_frame;
2202                 }
2203             }
2204             av_reduce(&codec->time_base.num, &codec->time_base.den,
2205                         codec->time_base.num, codec->time_base.den, INT_MAX);
2206
2207             switch(codec->codec_type) {
2208             case AVMEDIA_TYPE_AUDIO:
2209                 if(audio_volume != 256) {
2210                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2211                     exit_program(1);
2212                 }
2213                 codec->channel_layout     = icodec->channel_layout;
2214                 codec->sample_rate        = icodec->sample_rate;
2215                 codec->channels           = icodec->channels;
2216                 codec->frame_size         = icodec->frame_size;
2217                 codec->audio_service_type = icodec->audio_service_type;
2218                 codec->block_align        = icodec->block_align;
2219                 break;
2220             case AVMEDIA_TYPE_VIDEO:
2221                 codec->pix_fmt            = icodec->pix_fmt;
2222                 codec->width              = icodec->width;
2223                 codec->height             = icodec->height;
2224                 codec->has_b_frames       = icodec->has_b_frames;
2225                 if (!codec->sample_aspect_ratio.num) {
2226                     codec->sample_aspect_ratio   =
2227                     ost->st->sample_aspect_ratio =
2228                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2229                         ist->st->codec->sample_aspect_ratio.num ?
2230                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2231                 }
2232                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2233                 break;
2234             case AVMEDIA_TYPE_SUBTITLE:
2235                 codec->width  = icodec->width;
2236                 codec->height = icodec->height;
2237                 break;
2238             case AVMEDIA_TYPE_DATA:
2239             case AVMEDIA_TYPE_ATTACHMENT:
2240                 break;
2241             default:
2242                 abort();
2243             }
2244         } else {
2245             if (!ost->enc)
2246                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2247
2248             ist->decoding_needed = 1;
2249             ost->encoding_needed = 1;
2250
2251             switch(codec->codec_type) {
2252             case AVMEDIA_TYPE_AUDIO:
2253                 ost->fifo = av_fifo_alloc(1024);
2254                 if (!ost->fifo) {
2255                     return AVERROR(ENOMEM);
2256                 }
2257                 if (!codec->sample_rate)
2258                     codec->sample_rate = icodec->sample_rate;
2259                 choose_sample_rate(ost->st, ost->enc);
2260                 codec->time_base = (AVRational){1, codec->sample_rate};
2261
2262                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2263                     codec->sample_fmt = icodec->sample_fmt;
2264                 choose_sample_fmt(ost->st, ost->enc);
2265
2266                 if (ost->audio_channels_mapped) {
2267                     /* the requested output channel is set to the number of
2268                      * -map_channel only if no -ac are specified */
2269                     if (!codec->channels) {
2270                         codec->channels       = ost->audio_channels_mapped;
2271                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2272                         if (!codec->channel_layout) {
2273                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2274                             exit_program(1);
2275                         }
2276                     }
2277                     /* fill unused channel mapping with -1 (which means a muted
2278                      * channel in case the number of output channels is bigger
2279                      * than the number of mapped channel) */
2280                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2281                         ost->audio_channels_map[j] = -1;
2282                 } else if (!codec->channels) {
2283                     codec->channels = icodec->channels;
2284                     codec->channel_layout = icodec->channel_layout;
2285                 }
2286                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2287                     codec->channel_layout = 0;
2288
2289                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2290                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2291                                             || codec->channel_layout != icodec->channel_layout;
2292                 icodec->request_channels  = codec->channels;
2293                 ost->resample_sample_fmt  = icodec->sample_fmt;
2294                 ost->resample_sample_rate = icodec->sample_rate;
2295                 ost->resample_channels    = icodec->channels;
2296                 break;
2297             case AVMEDIA_TYPE_VIDEO:
2298                 if (codec->pix_fmt == PIX_FMT_NONE)
2299                     codec->pix_fmt = icodec->pix_fmt;
2300                 choose_pixel_fmt(ost->st, ost->enc);
2301
2302                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2303                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2304                     exit_program(1);
2305                 }
2306
2307                 if (!codec->width || !codec->height) {
2308                     codec->width  = icodec->width;
2309                     codec->height = icodec->height;
2310                 }
2311
2312                 ost->video_resample = codec->width   != icodec->width  ||
2313                                       codec->height  != icodec->height ||
2314                                       codec->pix_fmt != icodec->pix_fmt;
2315                 if (ost->video_resample) {
2316                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2317                 }
2318
2319                 ost->resample_height  = icodec->height;
2320                 ost->resample_width   = icodec->width;
2321                 ost->resample_pix_fmt = icodec->pix_fmt;
2322
2323                 if (!ost->frame_rate.num)
2324                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2325                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2326                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2327                     ost->frame_rate = ost->enc->supported_framerates[idx];
2328                 }
2329                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2330                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2331                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2332                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2333                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2334                 }
2335                 for (j = 0; j < ost->forced_kf_count; j++)
2336                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2337                                                          AV_TIME_BASE_Q,
2338                                                          codec->time_base);
2339
2340 #if CONFIG_AVFILTER
2341                 if (configure_video_filters(ist, ost)) {
2342                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2343                     exit(1);
2344                 }
2345 #endif
2346                 break;
2347             case AVMEDIA_TYPE_SUBTITLE:
2348                 break;
2349             default:
2350                 abort();
2351                 break;
2352             }
2353             /* two pass mode */
2354             if (codec->codec_id != CODEC_ID_H264 &&
2355                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2356                 char logfilename[1024];
2357                 FILE *f;
2358
2359                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2360                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2361                          i);
2362                 if (codec->flags & CODEC_FLAG_PASS2) {
2363                     char  *logbuffer;
2364                     size_t logbuffer_size;
2365                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2366                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2367                                logfilename);
2368                         exit_program(1);
2369                     }
2370                     codec->stats_in = logbuffer;
2371                 }
2372                 if (codec->flags & CODEC_FLAG_PASS1) {
2373                     f = fopen(logfilename, "wb");
2374                     if (!f) {
2375                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2376                                logfilename, strerror(errno));
2377                         exit_program(1);
2378                     }
2379                     ost->logfile = f;
2380                 }
2381             }
2382         }
2383         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2384             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2385             int size        = codec->width * codec->height;
2386             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2387         }
2388     }
2389
2390     if (!bit_buffer)
2391         bit_buffer = av_malloc(bit_buffer_size);
2392     if (!bit_buffer) {
2393         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2394                bit_buffer_size);
2395         return AVERROR(ENOMEM);
2396     }
2397
2398     /* open each encoder */
2399     for (i = 0; i < nb_output_streams; i++) {
2400         ost = &output_streams[i];
2401         if (ost->encoding_needed) {
2402             AVCodec      *codec = ost->enc;
2403             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2404             if (!codec) {
2405                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2406                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2407                 ret = AVERROR(EINVAL);
2408                 goto dump_format;
2409             }
2410             if (dec->subtitle_header) {
2411                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2412                 if (!ost->st->codec->subtitle_header) {
2413                     ret = AVERROR(ENOMEM);
2414                     goto dump_format;
2415                 }
2416                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2417                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2418             }
2419             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2420                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2421                         ost->file_index, ost->index);
2422                 ret = AVERROR(EINVAL);
2423                 goto dump_format;
2424             }
2425             assert_codec_experimental(ost->st->codec, 1);
2426             assert_avoptions(ost->opts);
2427             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2428                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2429                                              " It takes bits/s as argument, not kbits/s\n");
2430             extra_size += ost->st->codec->extradata_size;
2431
2432             if (ost->st->codec->me_threshold)
2433                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2434         }
2435     }
2436
2437     /* init input streams */
2438     for (i = 0; i < nb_input_streams; i++)
2439         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2440             goto dump_format;
2441
2442     /* discard unused programs */
2443     for (i = 0; i < nb_input_files; i++) {
2444         InputFile *ifile = &input_files[i];
2445         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2446             AVProgram *p = ifile->ctx->programs[j];
2447             int discard  = AVDISCARD_ALL;
2448
2449             for (k = 0; k < p->nb_stream_indexes; k++)
2450                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2451                     discard = AVDISCARD_DEFAULT;
2452                     break;
2453                 }
2454             p->discard = discard;
2455         }
2456     }
2457
2458     /* open files and write file headers */
2459     for (i = 0; i < nb_output_files; i++) {
2460         oc = output_files[i].ctx;
2461         oc->interrupt_callback = int_cb;
2462         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2463             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2464             ret = AVERROR(EINVAL);
2465             goto dump_format;
2466         }
2467 //        assert_avoptions(output_files[i].opts);
2468         if (strcmp(oc->oformat->name, "rtp")) {
2469             want_sdp = 0;
2470         }
2471     }
2472
2473  dump_format:
2474     /* dump the file output parameters - cannot be done before in case
2475        of stream copy */
2476     for (i = 0; i < nb_output_files; i++) {
2477         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2478     }
2479
2480     /* dump the stream mapping */
2481     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2482     for (i = 0; i < nb_output_streams; i++) {
2483         ost = &output_streams[i];
2484
2485         if (ost->attachment_filename) {
2486             /* an attached file */
2487             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2488                    ost->attachment_filename, ost->file_index, ost->index);
2489             continue;
2490         }
2491         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2492                input_streams[ost->source_index].file_index,
2493                input_streams[ost->source_index].st->index,
2494                ost->file_index,
2495                ost->index);
2496         if (ost->audio_channels_mapped) {
2497             av_log(NULL, AV_LOG_INFO, " [ch:");
2498             for (j = 0; j < ost->audio_channels_mapped; j++)
2499                 if (ost->audio_channels_map[j] == -1)
2500                     av_log(NULL, AV_LOG_INFO, " M");
2501                 else
2502                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2503             av_log(NULL, AV_LOG_INFO, "]");
2504         }
2505         if (ost->sync_ist != &input_streams[ost->source_index])
2506             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2507                    ost->sync_ist->file_index,
2508                    ost->sync_ist->st->index);
2509         if (ost->stream_copy)
2510             av_log(NULL, AV_LOG_INFO, " (copy)");
2511         else
2512             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2513                    input_streams[ost->source_index].dec->name : "?",
2514                    ost->enc ? ost->enc->name : "?");
2515         av_log(NULL, AV_LOG_INFO, "\n");
2516     }
2517
2518     if (ret) {
2519         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2520         return ret;
2521     }
2522
2523     if (want_sdp) {
2524         print_sdp(output_files, nb_output_files);
2525     }
2526
2527     return 0;
2528 }
2529
2530 /*
2531  * The following code is the main loop of the file converter
2532  */
2533 static int transcode(OutputFile *output_files, int nb_output_files,
2534                      InputFile  *input_files,  int nb_input_files)
2535 {
2536     int ret, i;
2537     AVFormatContext *is, *os;
2538     OutputStream *ost;
2539     InputStream *ist;
2540     uint8_t *no_packet;
2541     int no_packet_count=0;
2542     int64_t timer_start;
2543     int key;
2544
2545     if (!(no_packet = av_mallocz(nb_input_files)))
2546         exit_program(1);
2547
2548     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2549     if (ret < 0)
2550         goto fail;
2551
2552     if (!using_stdin) {
2553         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2554     }
2555
2556     timer_start = av_gettime();
2557
2558     for(; received_sigterm == 0;) {
2559         int file_index, ist_index;
2560         AVPacket pkt;
2561         int64_t ipts_min;
2562         double opts_min;
2563         int64_t cur_time= av_gettime();
2564
2565         ipts_min= INT64_MAX;
2566         opts_min= 1e100;
2567         /* if 'q' pressed, exits */
2568         if (!using_stdin) {
2569             static int64_t last_time;
2570             if (received_nb_signals)
2571                 break;
2572             /* read_key() returns 0 on EOF */
2573             if(cur_time - last_time >= 100000 && !run_as_daemon){
2574                 key =  read_key();
2575                 last_time = cur_time;
2576             }else
2577                 key = -1;
2578             if (key == 'q')
2579                 break;
2580             if (key == '+') av_log_set_level(av_log_get_level()+10);
2581             if (key == '-') av_log_set_level(av_log_get_level()-10);
2582             if (key == 's') qp_hist     ^= 1;
2583             if (key == 'h'){
2584                 if (do_hex_dump){
2585                     do_hex_dump = do_pkt_dump = 0;
2586                 } else if(do_pkt_dump){
2587                     do_hex_dump = 1;
2588                 } else
2589                     do_pkt_dump = 1;
2590                 av_log_set_level(AV_LOG_DEBUG);
2591             }
2592 #if CONFIG_AVFILTER
2593             if (key == 'c' || key == 'C'){
2594                 char buf[4096], target[64], command[256], arg[256] = {0};
2595                 double time;
2596                 int k, n = 0;
2597                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2598                 i = 0;
2599                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2600                     if (k > 0)
2601                         buf[i++] = k;
2602                 buf[i] = 0;
2603                 if (k > 0 &&
2604                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2605                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2606                            target, time, command, arg);
2607                     for (i = 0; i < nb_output_streams; i++) {
2608                         ost = &output_streams[i];
2609                         if (ost->graph) {
2610                             if (time < 0) {
2611                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2612                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2613                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2614                             } else {
2615                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2616                             }
2617                         }
2618                     }
2619                 } else {
2620                     av_log(NULL, AV_LOG_ERROR,
2621                            "Parse error, at least 3 arguments were expected, "
2622                            "only %d given in string '%s'\n", n, buf);
2623                 }
2624             }
2625 #endif
2626             if (key == 'd' || key == 'D'){
2627                 int debug=0;
2628                 if(key == 'D') {
2629                     debug = input_streams[0].st->codec->debug<<1;
2630                     if(!debug) debug = 1;
2631                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2632                         debug += debug;
2633                 }else
2634                     if(scanf("%d", &debug)!=1)
2635                         fprintf(stderr,"error parsing debug value\n");
2636                 for(i=0;i<nb_input_streams;i++) {
2637                     input_streams[i].st->codec->debug = debug;
2638                 }
2639                 for(i=0;i<nb_output_streams;i++) {
2640                     ost = &output_streams[i];
2641                     ost->st->codec->debug = debug;
2642                 }
2643                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2644                 fprintf(stderr,"debug=%d\n", debug);
2645             }
2646             if (key == '?'){
2647                 fprintf(stderr, "key    function\n"
2648                                 "?      show this help\n"
2649                                 "+      increase verbosity\n"
2650                                 "-      decrease verbosity\n"
2651                                 "c      Send command to filtergraph\n"
2652                                 "D      cycle through available debug modes\n"
2653                                 "h      dump packets/hex press to cycle through the 3 states\n"
2654                                 "q      quit\n"
2655                                 "s      Show QP histogram\n"
2656                 );
2657             }
2658         }
2659
2660         /* select the stream that we must read now by looking at the
2661            smallest output pts */
2662         file_index = -1;
2663         for (i = 0; i < nb_output_streams; i++) {
2664             OutputFile *of;
2665             int64_t ipts;
2666             double  opts;
2667             ost = &output_streams[i];
2668             of = &output_files[ost->file_index];
2669             os = output_files[ost->file_index].ctx;
2670             ist = &input_streams[ost->source_index];
2671             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2672                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2673                 continue;
2674             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2675             ipts = ist->pts;
2676             if (!input_files[ist->file_index].eof_reached){
2677                 if(ipts < ipts_min) {
2678                     ipts_min = ipts;
2679                     if(input_sync ) file_index = ist->file_index;
2680                 }
2681                 if(opts < opts_min) {
2682                     opts_min = opts;
2683                     if(!input_sync) file_index = ist->file_index;
2684                 }
2685             }
2686             if (ost->frame_number >= ost->max_frames) {
2687                 int j;
2688                 for (j = 0; j < of->ctx->nb_streams; j++)
2689                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2690                 continue;
2691             }
2692         }
2693         /* if none, if is finished */
2694         if (file_index < 0) {
2695             if(no_packet_count){
2696                 no_packet_count=0;
2697                 memset(no_packet, 0, nb_input_files);
2698                 usleep(10000);
2699                 continue;
2700             }
2701             break;
2702         }
2703
2704         /* read a frame from it and output it in the fifo */
2705         is = input_files[file_index].ctx;
2706         ret= av_read_frame(is, &pkt);
2707         if(ret == AVERROR(EAGAIN)){
2708             no_packet[file_index]=1;
2709             no_packet_count++;
2710             continue;
2711         }
2712         if (ret < 0) {
2713             input_files[file_index].eof_reached = 1;
2714             if (opt_shortest)
2715                 break;
2716             else
2717                 continue;
2718         }
2719
2720         no_packet_count=0;
2721         memset(no_packet, 0, nb_input_files);
2722
2723         if (do_pkt_dump) {
2724             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2725                              is->streams[pkt.stream_index]);
2726         }
2727         /* the following test is needed in case new streams appear
2728            dynamically in stream : we ignore them */
2729         if (pkt.stream_index >= input_files[file_index].nb_streams)
2730             goto discard_packet;
2731         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2732         ist = &input_streams[ist_index];
2733         if (ist->discard)
2734             goto discard_packet;
2735
2736         if (pkt.dts != AV_NOPTS_VALUE)
2737             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2738         if (pkt.pts != AV_NOPTS_VALUE)
2739             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2740
2741         if(pkt.pts != AV_NOPTS_VALUE)
2742             pkt.pts *= ist->ts_scale;
2743         if(pkt.dts != AV_NOPTS_VALUE)
2744             pkt.dts *= ist->ts_scale;
2745
2746 //        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);
2747         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2748             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2749             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2750             int64_t delta= pkt_dts - ist->next_pts;
2751             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2752                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2753                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2754                 pkt_dts+1<ist->pts)&& !copy_ts){
2755                 input_files[ist->file_index].ts_offset -= delta;
2756                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2757                        delta, input_files[ist->file_index].ts_offset);
2758                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2759                 if(pkt.pts != AV_NOPTS_VALUE)
2760                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2761             }
2762         }
2763
2764         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2765         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2766
2767             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2768                    ist->file_index, ist->st->index);
2769             if (exit_on_error)
2770                 exit_program(1);
2771             av_free_packet(&pkt);
2772             continue;
2773         }
2774
2775     discard_packet:
2776         av_free_packet(&pkt);
2777
2778         /* dump report by using the output first video and audio streams */
2779         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2780     }
2781
2782     /* at the end of stream, we must flush the decoder buffers */
2783     for (i = 0; i < nb_input_streams; i++) {
2784         ist = &input_streams[i];
2785         if (ist->decoding_needed) {
2786             output_packet(ist, output_streams, nb_output_streams, NULL);
2787         }
2788     }
2789     flush_encoders(output_streams, nb_output_streams);
2790
2791     term_exit();
2792
2793     /* write the trailer if needed and close file */
2794     for(i=0;i<nb_output_files;i++) {
2795         os = output_files[i].ctx;
2796         av_write_trailer(os);
2797     }
2798
2799     /* dump report by using the first video and audio streams */
2800     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2801
2802     /* close each encoder */
2803     for (i = 0; i < nb_output_streams; i++) {
2804         ost = &output_streams[i];
2805         if (ost->encoding_needed) {
2806             av_freep(&ost->st->codec->stats_in);
2807             avcodec_close(ost->st->codec);
2808         }
2809 #if CONFIG_AVFILTER
2810         avfilter_graph_free(&ost->graph);
2811 #endif
2812     }
2813
2814     /* close each decoder */
2815     for (i = 0; i < nb_input_streams; i++) {
2816         ist = &input_streams[i];
2817         if (ist->decoding_needed) {
2818             avcodec_close(ist->st->codec);
2819         }
2820     }
2821
2822     /* finished ! */
2823     ret = 0;
2824
2825  fail:
2826     av_freep(&bit_buffer);
2827     av_freep(&no_packet);
2828
2829     if (output_streams) {
2830         for (i = 0; i < nb_output_streams; i++) {
2831             ost = &output_streams[i];
2832             if (ost) {
2833                 if (ost->stream_copy)
2834                     av_freep(&ost->st->codec->extradata);
2835                 if (ost->logfile) {
2836                     fclose(ost->logfile);
2837                     ost->logfile = NULL;
2838                 }
2839                 av_fifo_free(ost->fifo); /* works even if fifo is not
2840                                              initialized but set to zero */
2841                 av_freep(&ost->st->codec->subtitle_header);
2842                 av_free(ost->resample_frame.data[0]);
2843                 av_free(ost->forced_kf_pts);
2844                 if (ost->video_resample)
2845                     sws_freeContext(ost->img_resample_ctx);
2846                 swr_free(&ost->swr);
2847                 av_dict_free(&ost->opts);
2848             }
2849         }
2850     }
2851     return ret;
2852 }
2853
2854 static int opt_frame_crop(const char *opt, const char *arg)
2855 {
2856     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2857     return AVERROR(EINVAL);
2858 }
2859
2860 static int opt_pad(const char *opt, const char *arg)
2861 {
2862     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2863     return -1;
2864 }
2865
2866 static double parse_frame_aspect_ratio(const char *arg)
2867 {
2868     int x = 0, y = 0;
2869     double ar = 0;
2870     const char *p;
2871     char *end;
2872
2873     p = strchr(arg, ':');
2874     if (p) {
2875         x = strtol(arg, &end, 10);
2876         if (end == p)
2877             y = strtol(end+1, &end, 10);
2878         if (x > 0 && y > 0)
2879             ar = (double)x / (double)y;
2880     } else
2881         ar = strtod(arg, NULL);
2882
2883     if (!ar) {
2884         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2885         exit_program(1);
2886     }
2887     return ar;
2888 }
2889
2890 static int opt_video_channel(const char *opt, const char *arg)
2891 {
2892     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2893     return opt_default("channel", arg);
2894 }
2895
2896 static int opt_video_standard(const char *opt, const char *arg)
2897 {
2898     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2899     return opt_default("standard", arg);
2900 }
2901
2902 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2903 {
2904     audio_codec_name = arg;
2905     return parse_option(o, "codec:a", arg, options);
2906 }
2907
2908 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2909 {
2910     video_codec_name = arg;
2911     return parse_option(o, "codec:v", arg, options);
2912 }
2913
2914 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2915 {
2916     subtitle_codec_name = arg;
2917     return parse_option(o, "codec:s", arg, options);
2918 }
2919
2920 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2921 {
2922     return parse_option(o, "codec:d", arg, options);
2923 }
2924
2925 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2926 {
2927     StreamMap *m = NULL;
2928     int i, negative = 0, file_idx;
2929     int sync_file_idx = -1, sync_stream_idx;
2930     char *p, *sync;
2931     char *map;
2932
2933     if (*arg == '-') {
2934         negative = 1;
2935         arg++;
2936     }
2937     map = av_strdup(arg);
2938
2939     /* parse sync stream first, just pick first matching stream */
2940     if (sync = strchr(map, ',')) {
2941         *sync = 0;
2942         sync_file_idx = strtol(sync + 1, &sync, 0);
2943         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2944             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2945             exit_program(1);
2946         }
2947         if (*sync)
2948             sync++;
2949         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2950             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2951                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2952                 sync_stream_idx = i;
2953                 break;
2954             }
2955         if (i == input_files[sync_file_idx].nb_streams) {
2956             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2957                                        "match any streams.\n", arg);
2958             exit_program(1);
2959         }
2960     }
2961
2962
2963     file_idx = strtol(map, &p, 0);
2964     if (file_idx >= nb_input_files || file_idx < 0) {
2965         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2966         exit_program(1);
2967     }
2968     if (negative)
2969         /* disable some already defined maps */
2970         for (i = 0; i < o->nb_stream_maps; i++) {
2971             m = &o->stream_maps[i];
2972             if (file_idx == m->file_index &&
2973                 check_stream_specifier(input_files[m->file_index].ctx,
2974                                        input_files[m->file_index].ctx->streams[m->stream_index],
2975                                        *p == ':' ? p + 1 : p) > 0)
2976                 m->disabled = 1;
2977         }
2978     else
2979         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2980             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2981                         *p == ':' ? p + 1 : p) <= 0)
2982                 continue;
2983             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2984                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2985             m = &o->stream_maps[o->nb_stream_maps - 1];
2986
2987             m->file_index   = file_idx;
2988             m->stream_index = i;
2989
2990             if (sync_file_idx >= 0) {
2991                 m->sync_file_index   = sync_file_idx;
2992                 m->sync_stream_index = sync_stream_idx;
2993             } else {
2994                 m->sync_file_index   = file_idx;
2995                 m->sync_stream_index = i;
2996             }
2997         }
2998
2999     if (!m) {
3000         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3001         exit_program(1);
3002     }
3003
3004     av_freep(&map);
3005     return 0;
3006 }
3007
3008 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3009 {
3010     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3011                                 &o->nb_attachments, o->nb_attachments + 1);
3012     o->attachments[o->nb_attachments - 1] = arg;
3013     return 0;
3014 }
3015
3016 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3017 {
3018     int n;
3019     AVStream *st;
3020     AudioChannelMap *m;
3021
3022     o->audio_channel_maps =
3023         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3024                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3025     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3026
3027     /* muted channel syntax */
3028     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3029     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3030         m->file_idx = m->stream_idx = -1;
3031         if (n == 1)
3032             m->ofile_idx = m->ostream_idx = -1;
3033         return 0;
3034     }
3035
3036     /* normal syntax */
3037     n = sscanf(arg, "%d.%d.%d:%d.%d",
3038                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3039                &m->ofile_idx, &m->ostream_idx);
3040
3041     if (n != 3 && n != 5) {
3042         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3043                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3044         exit_program(1);
3045     }
3046
3047     if (n != 5) // only file.stream.channel specified
3048         m->ofile_idx = m->ostream_idx = -1;
3049
3050     /* check input */
3051     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3052         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3053                m->file_idx);
3054         exit_program(1);
3055     }
3056     if (m->stream_idx < 0 ||
3057         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3058         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3059                m->file_idx, m->stream_idx);
3060         exit_program(1);
3061     }
3062     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3063     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3064         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3065                m->file_idx, m->stream_idx);
3066         exit_program(1);
3067     }
3068     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3069         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3070                m->file_idx, m->stream_idx, m->channel_idx);
3071         exit_program(1);
3072     }
3073     return 0;
3074 }
3075
3076 static void parse_meta_type(char *arg, char *type, int *index)
3077 {
3078     if (*arg) {
3079         *type = *arg;
3080         switch (*arg) {
3081         case 'g':
3082             break;
3083         case 's':
3084         case 'c':
3085         case 'p':
3086             if (*(++arg) == ':')
3087                 *index = strtol(++arg, NULL, 0);
3088             break;
3089         default:
3090             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3091             exit_program(1);
3092         }
3093     } else
3094         *type = 'g';
3095 }
3096
3097 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3098 {
3099     MetadataMap *m, *m1;
3100     char *p;
3101
3102     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3103                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3104
3105     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3106     m->file = strtol(arg, &p, 0);
3107     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3108
3109     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3110     if (p = strchr(opt, ':'))
3111         parse_meta_type(p + 1, &m1->type, &m1->index);
3112     else
3113         m1->type = 'g';
3114
3115     if (m->type == 'g' || m1->type == 'g')
3116         o->metadata_global_manual = 1;
3117     if (m->type == 's' || m1->type == 's')
3118         o->metadata_streams_manual = 1;
3119     if (m->type == 'c' || m1->type == 'c')
3120         o->metadata_chapters_manual = 1;
3121
3122     return 0;
3123 }
3124
3125 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3126 {
3127     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3128                     "Use -map_metadata instead.\n");
3129     return opt_map_metadata(o, opt, arg);
3130 }
3131
3132 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3133 {
3134     char buf[128];
3135     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3136     struct tm time = *gmtime((time_t*)&recording_timestamp);
3137     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3138     parse_option(o, "metadata", buf, options);
3139
3140     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3141                                  "tag instead.\n", opt);
3142     return 0;
3143 }
3144
3145 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3146 {
3147     const char *codec_string = encoder ? "encoder" : "decoder";
3148     AVCodec *codec;
3149
3150     codec = encoder ?
3151         avcodec_find_encoder_by_name(name) :
3152         avcodec_find_decoder_by_name(name);
3153     if(!codec) {
3154         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3155         exit_program(1);
3156     }
3157     if(codec->type != type) {
3158         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3159         exit_program(1);
3160     }
3161     return codec;
3162 }
3163
3164 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3165 {
3166     char *codec_name = NULL;
3167
3168     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3169     if (codec_name) {
3170         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3171         st->codec->codec_id = codec->id;
3172         return codec;
3173     } else
3174         return avcodec_find_decoder(st->codec->codec_id);
3175 }
3176
3177 /**
3178  * Add all the streams from the given input file to the global
3179  * list of input streams.
3180  */
3181 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3182 {
3183     int i, rfps, rfps_base;
3184     char *next, *codec_tag = NULL;
3185
3186     for (i = 0; i < ic->nb_streams; i++) {
3187         AVStream *st = ic->streams[i];
3188         AVCodecContext *dec = st->codec;
3189         InputStream *ist;
3190
3191         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3192         ist = &input_streams[nb_input_streams - 1];
3193         ist->st = st;
3194         ist->file_index = nb_input_files;
3195         ist->discard = 1;
3196         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3197
3198         ist->ts_scale = 1.0;
3199         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3200
3201         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3202         if (codec_tag) {
3203             uint32_t tag = strtol(codec_tag, &next, 0);
3204             if (*next)
3205                 tag = AV_RL32(codec_tag);
3206             st->codec->codec_tag = tag;
3207         }
3208
3209         ist->dec = choose_decoder(o, ic, st);
3210
3211         switch (dec->codec_type) {
3212         case AVMEDIA_TYPE_AUDIO:
3213             if(!ist->dec)
3214                 ist->dec = avcodec_find_decoder(dec->codec_id);
3215             if(o->audio_disable)
3216                 st->discard= AVDISCARD_ALL;
3217             break;
3218         case AVMEDIA_TYPE_VIDEO:
3219             if(!ist->dec)
3220                 ist->dec = avcodec_find_decoder(dec->codec_id);
3221             rfps      = ic->streams[i]->r_frame_rate.num;
3222             rfps_base = ic->streams[i]->r_frame_rate.den;
3223             if (dec->lowres) {
3224                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3225             }
3226
3227             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3228
3229                 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",
3230                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3231                        (float)rfps / rfps_base, rfps, rfps_base);
3232             }
3233
3234             if (o->video_disable)
3235                 st->discard= AVDISCARD_ALL;
3236             else if(video_discard)
3237                 st->discard= video_discard;
3238             break;
3239         case AVMEDIA_TYPE_DATA:
3240             break;
3241         case AVMEDIA_TYPE_SUBTITLE:
3242             if(!ist->dec)
3243                 ist->dec = avcodec_find_decoder(dec->codec_id);
3244             if(o->subtitle_disable)
3245                 st->discard = AVDISCARD_ALL;
3246             break;
3247         case AVMEDIA_TYPE_ATTACHMENT:
3248         case AVMEDIA_TYPE_UNKNOWN:
3249             break;
3250         default:
3251             abort();
3252         }
3253     }
3254 }
3255
3256 static void assert_file_overwrite(const char *filename)
3257 {
3258     if ((!file_overwrite || no_file_overwrite) &&
3259         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3260          av_strstart(filename, "file:", NULL))) {
3261         if (avio_check(filename, 0) == 0) {
3262             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3263                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3264                 fflush(stderr);
3265                 term_exit();
3266                 if (!read_yesno()) {
3267                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3268                     exit_program(1);
3269                 }
3270                 term_init();
3271             }
3272             else {
3273                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3274                 exit_program(1);
3275             }
3276         }
3277     }
3278 }
3279
3280 static void dump_attachment(AVStream *st, const char *filename)
3281 {
3282     int ret;
3283     AVIOContext *out = NULL;
3284     AVDictionaryEntry *e;
3285
3286     if (!st->codec->extradata_size) {
3287         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3288                nb_input_files - 1, st->index);
3289         return;
3290     }
3291     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3292         filename = e->value;
3293     if (!*filename) {
3294         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3295                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3296         exit_program(1);
3297     }
3298
3299     assert_file_overwrite(filename);
3300
3301     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3302         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3303                filename);
3304         exit_program(1);
3305     }
3306
3307     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3308     avio_flush(out);
3309     avio_close(out);
3310 }
3311
3312 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3313 {
3314     AVFormatContext *ic;
3315     AVInputFormat *file_iformat = NULL;
3316     int err, i, ret;
3317     int64_t timestamp;
3318     uint8_t buf[128];
3319     AVDictionary **opts;
3320     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3321
3322     if (o->format) {
3323         if (!(file_iformat = av_find_input_format(o->format))) {
3324             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3325             exit_program(1);
3326         }
3327     }
3328
3329     if (!strcmp(filename, "-"))
3330         filename = "pipe:";
3331
3332     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3333                     !strcmp(filename, "/dev/stdin");
3334
3335     /* get default parameters from command line */
3336     ic = avformat_alloc_context();
3337     if (!ic) {
3338         print_error(filename, AVERROR(ENOMEM));
3339         exit_program(1);
3340     }
3341     if (o->nb_audio_sample_rate) {
3342         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3343         av_dict_set(&format_opts, "sample_rate", buf, 0);
3344     }
3345     if (o->nb_audio_channels) {
3346         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3347         av_dict_set(&format_opts, "channels", buf, 0);
3348     }
3349     if (o->nb_frame_rates) {
3350         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3351     }
3352     if (o->nb_frame_sizes) {
3353         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3354     }
3355     if (o->nb_frame_pix_fmts)
3356         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3357
3358     ic->video_codec_id   = video_codec_name ?
3359         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3360     ic->audio_codec_id   = audio_codec_name ?
3361         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3362     ic->subtitle_codec_id= subtitle_codec_name ?
3363         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3364     ic->flags |= AVFMT_FLAG_NONBLOCK;
3365     ic->interrupt_callback = int_cb;
3366
3367     if (loop_input) {
3368         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3369         ic->loop_input = loop_input;
3370     }
3371
3372     /* open the input file with generic libav function */
3373     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3374     if (err < 0) {
3375         print_error(filename, err);
3376         exit_program(1);
3377     }
3378     assert_avoptions(format_opts);
3379
3380     /* apply forced codec ids */
3381     for (i = 0; i < ic->nb_streams; i++)
3382         choose_decoder(o, ic, ic->streams[i]);
3383
3384     /* Set AVCodecContext options for avformat_find_stream_info */
3385     opts = setup_find_stream_info_opts(ic, codec_opts);
3386     orig_nb_streams = ic->nb_streams;
3387
3388     /* If not enough info to get the stream parameters, we decode the
3389        first frames to get it. (used in mpeg case for example) */
3390     ret = avformat_find_stream_info(ic, opts);
3391     if (ret < 0) {
3392         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3393         av_close_input_file(ic);
3394         exit_program(1);
3395     }
3396
3397     timestamp = o->start_time;
3398     /* add the stream start time */
3399     if (ic-&