ffmpeg: print swr options in --help too
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/resource.h>
67 #elif HAVE_GETPROCESSTIMES
68 #include <windows.h>
69 #endif
70 #if HAVE_GETPROCESSMEMORYINFO
71 #include <windows.h>
72 #include <psapi.h>
73 #endif
74
75 #if HAVE_SYS_SELECT_H
76 #include <sys/select.h>
77 #endif
78
79 #if HAVE_TERMIOS_H
80 #include <fcntl.h>
81 #include <sys/ioctl.h>
82 #include <sys/time.h>
83 #include <termios.h>
84 #elif HAVE_KBHIT
85 #include <conio.h>
86 #endif
87
88 #if HAVE_PTHREADS
89 #include <pthread.h>
90 #endif
91
92 #include <time.h>
93
94 #include "cmdutils.h"
95
96 #include "libavutil/avassert.h"
97
98 #define VSYNC_AUTO       -1
99 #define VSYNC_PASSTHROUGH 0
100 #define VSYNC_CFR         1
101 #define VSYNC_VFR         2
102 #define VSYNC_DROP        0xff
103
104 #define SINKA
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 /* select an input stream for an output stream */
110 typedef struct StreamMap {
111     int disabled;           /** 1 is this mapping is disabled by a negative map */
112     int file_index;
113     int stream_index;
114     int sync_file_index;
115     int sync_stream_index;
116     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
117 } StreamMap;
118
119 typedef struct {
120     int  file_idx,  stream_idx,  channel_idx; // input
121     int ofile_idx, ostream_idx;               // output
122 } AudioChannelMap;
123
124 static const OptionDef options[];
125
126 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
127
128 static int frame_bits_per_raw_sample = 0;
129 static int video_discard = 0;
130 static int same_quant = 0;
131 static int do_deinterlace = 0;
132 static int intra_dc_precision = 8;
133 static int qp_hist = 0;
134 static int intra_only = 0;
135 static const char *video_codec_name    = NULL;
136 static const char *audio_codec_name    = NULL;
137 static const char *subtitle_codec_name = NULL;
138
139 static int file_overwrite = 0;
140 static int no_file_overwrite = 0;
141 static int do_benchmark = 0;
142 static int do_benchmark_all = 0;
143 static int do_hex_dump = 0;
144 static int do_pkt_dump = 0;
145 static int do_psnr = 0;
146 static int do_pass = 0;
147 static const char *pass_logfilename_prefix;
148 static int video_sync_method = VSYNC_AUTO;
149 static int audio_sync_method = 0;
150 static float audio_drift_threshold = 0.1;
151 static int copy_ts = 0;
152 static int copy_tb = -1;
153 static int opt_shortest = 0;
154 static char *vstats_filename;
155 static FILE *vstats_file;
156
157 static int audio_volume = 256;
158
159 static int exit_on_error = 0;
160 static int using_stdin = 0;
161 static int run_as_daemon  = 0;
162 static volatile int received_nb_signals = 0;
163 static int64_t video_size = 0;
164 static int64_t audio_size = 0;
165 static int64_t subtitle_size = 0;
166 static int64_t extra_size = 0;
167 static int nb_frames_dup = 0;
168 static int nb_frames_drop = 0;
169 static int input_sync;
170
171 static float dts_delta_threshold = 10;
172 static float dts_error_threshold = 3600*30;
173
174 static int print_stats = 1;
175 static int debug_ts = 0;
176 static int current_time;
177
178 #if HAVE_PTHREADS
179 /* signal to input threads that they should exit; set by the main thread */
180 static int transcoding_finished;
181 #endif
182
183 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
184
185 typedef struct InputFilter {
186     AVFilterContext    *filter;
187     struct InputStream *ist;
188     struct FilterGraph *graph;
189     uint8_t            *name;
190 } InputFilter;
191
192 typedef struct OutputFilter {
193     AVFilterContext     *filter;
194     struct OutputStream *ost;
195     struct FilterGraph  *graph;
196     uint8_t             *name;
197
198     /* temporary storage until stream maps are processed */
199     AVFilterInOut       *out_tmp;
200 } OutputFilter;
201
202 typedef struct FilterGraph {
203     int            index;
204     const char    *graph_desc;
205
206     AVFilterGraph *graph;
207
208     InputFilter   **inputs;
209     int          nb_inputs;
210     OutputFilter **outputs;
211     int         nb_outputs;
212 } FilterGraph;
213
214 typedef struct InputStream {
215     int file_index;
216     AVStream *st;
217     int discard;             /* true if stream data should be discarded */
218     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
219     AVCodec *dec;
220     AVFrame *decoded_frame;
221
222     int64_t       start;     /* time when read started */
223     /* predicted dts of the next packet read for this stream or (when there are
224      * several frames in a packet) of the next frame in current packet */
225     int64_t       next_dts;
226     /* dts of the last packet read for this stream */
227     int64_t       dts;
228
229     int64_t       next_pts;  /* synthetic pts for the next decode frame */
230     int64_t       pts;       /* current pts of the decoded frame */
231     double ts_scale;
232     int is_start;            /* is 1 at the start and after a discontinuity */
233     int saw_first_ts;
234     int showed_multi_packet_warning;
235     AVDictionary *opts;
236     AVRational framerate;               /* framerate forced with -r */
237     int top_field_first;
238
239     int resample_height;
240     int resample_width;
241     int resample_pix_fmt;
242
243     int      resample_sample_fmt;
244     int      resample_sample_rate;
245     int      resample_channels;
246     uint64_t resample_channel_layout;
247
248     /* a pool of free buffers for decoded data */
249     FrameBuffer *buffer_pool;
250     int dr1;
251
252     /* decoded data from this stream goes into all those filters
253      * currently video and audio only */
254     InputFilter **filters;
255     int        nb_filters;
256 } InputStream;
257
258 typedef struct InputFile {
259     AVFormatContext *ctx;
260     int eof_reached;      /* true if eof reached */
261     int ist_index;        /* index of first stream in input_streams */
262     int buffer_size;      /* current total buffer size */
263     int64_t ts_offset;
264     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
265                              from ctx.nb_streams if new streams appear during av_read_frame() */
266     int rate_emu;
267
268 #if HAVE_PTHREADS
269     pthread_t thread;           /* thread reading from this file */
270     int finished;               /* the thread has exited */
271     int joined;                 /* the thread has been joined */
272     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
273     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
274     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
275 #endif
276 } InputFile;
277
278 typedef struct OutputStream {
279     int file_index;          /* file index */
280     int index;               /* stream index in the output file */
281     int source_index;        /* InputStream index */
282     AVStream *st;            /* stream in the output file */
283     int encoding_needed;     /* true if encoding needed for this stream */
284     int frame_number;
285     /* input pts and corresponding output pts
286        for A/V sync */
287     struct InputStream *sync_ist; /* input stream to sync against */
288     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
289     /* pts of the first frame encoded for this stream, used for limiting
290      * recording time */
291     int64_t first_pts;
292     AVBitStreamFilterContext *bitstream_filters;
293     AVCodec *enc;
294     int64_t max_frames;
295     AVFrame *filtered_frame;
296
297     /* video only */
298     AVRational frame_rate;
299     int force_fps;
300     int top_field_first;
301
302     float frame_aspect_ratio;
303     float last_quality;
304
305     /* forced key frames */
306     int64_t *forced_kf_pts;
307     int forced_kf_count;
308     int forced_kf_index;
309
310     /* audio only */
311     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
312     int audio_channels_mapped;           /* number of channels in audio_channels_map */
313
314     FILE *logfile;
315
316     OutputFilter *filter;
317     char *avfilter;
318
319     int64_t sws_flags;
320     int64_t swr_dither_method;
321     double swr_dither_scale;
322     AVDictionary *opts;
323     int is_past_recording_time;
324     int stream_copy;
325     const char *attachment_filename;
326     int copy_initial_nonkeyframes;
327
328     int keep_pix_fmt;
329 } OutputStream;
330
331
332 #if HAVE_TERMIOS_H
333
334 /* init terminal so that we can grab keys */
335 static struct termios oldtty;
336 static int restore_tty;
337 #endif
338
339 typedef struct OutputFile {
340     AVFormatContext *ctx;
341     AVDictionary *opts;
342     int ost_index;       /* index of the first stream in output_streams */
343     int64_t recording_time; /* desired length of the resulting file in microseconds */
344     int64_t start_time;     /* start time in microseconds */
345     uint64_t limit_filesize; /* filesize limit expressed in bytes */
346 } OutputFile;
347
348 static InputStream **input_streams = NULL;
349 static int        nb_input_streams = 0;
350 static InputFile   **input_files   = NULL;
351 static int        nb_input_files   = 0;
352
353 static OutputStream **output_streams = NULL;
354 static int         nb_output_streams = 0;
355 static OutputFile   **output_files   = NULL;
356 static int         nb_output_files   = 0;
357
358 static FilterGraph **filtergraphs;
359 int               nb_filtergraphs;
360
361 typedef struct OptionsContext {
362     /* input/output options */
363     int64_t start_time;
364     const char *format;
365
366     SpecifierOpt *codec_names;
367     int        nb_codec_names;
368     SpecifierOpt *audio_channels;
369     int        nb_audio_channels;
370     SpecifierOpt *audio_sample_rate;
371     int        nb_audio_sample_rate;
372     SpecifierOpt *frame_rates;
373     int        nb_frame_rates;
374     SpecifierOpt *frame_sizes;
375     int        nb_frame_sizes;
376     SpecifierOpt *frame_pix_fmts;
377     int        nb_frame_pix_fmts;
378
379     /* input options */
380     int64_t input_ts_offset;
381     int rate_emu;
382
383     SpecifierOpt *ts_scale;
384     int        nb_ts_scale;
385     SpecifierOpt *dump_attachment;
386     int        nb_dump_attachment;
387
388     /* output options */
389     StreamMap *stream_maps;
390     int     nb_stream_maps;
391     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
392     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
393     int metadata_global_manual;
394     int metadata_streams_manual;
395     int metadata_chapters_manual;
396     const char **attachments;
397     int       nb_attachments;
398
399     int chapters_input_file;
400
401     int64_t recording_time;
402     uint64_t limit_filesize;
403     float mux_preload;
404     float mux_max_delay;
405
406     int video_disable;
407     int audio_disable;
408     int subtitle_disable;
409     int data_disable;
410
411     /* indexed by output file stream index */
412     int   *streamid_map;
413     int nb_streamid_map;
414
415     SpecifierOpt *metadata;
416     int        nb_metadata;
417     SpecifierOpt *max_frames;
418     int        nb_max_frames;
419     SpecifierOpt *bitstream_filters;
420     int        nb_bitstream_filters;
421     SpecifierOpt *codec_tags;
422     int        nb_codec_tags;
423     SpecifierOpt *sample_fmts;
424     int        nb_sample_fmts;
425     SpecifierOpt *qscale;
426     int        nb_qscale;
427     SpecifierOpt *forced_key_frames;
428     int        nb_forced_key_frames;
429     SpecifierOpt *force_fps;
430     int        nb_force_fps;
431     SpecifierOpt *frame_aspect_ratios;
432     int        nb_frame_aspect_ratios;
433     SpecifierOpt *rc_overrides;
434     int        nb_rc_overrides;
435     SpecifierOpt *intra_matrices;
436     int        nb_intra_matrices;
437     SpecifierOpt *inter_matrices;
438     int        nb_inter_matrices;
439     SpecifierOpt *top_field_first;
440     int        nb_top_field_first;
441     SpecifierOpt *metadata_map;
442     int        nb_metadata_map;
443     SpecifierOpt *presets;
444     int        nb_presets;
445     SpecifierOpt *copy_initial_nonkeyframes;
446     int        nb_copy_initial_nonkeyframes;
447     SpecifierOpt *filters;
448     int        nb_filters;
449 } OptionsContext;
450
451 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
452
453 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
454 {\
455     int i, ret;\
456     for (i = 0; i < o->nb_ ## name; i++) {\
457         char *spec = o->name[i].specifier;\
458         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
459             outvar = o->name[i].u.type;\
460         else if (ret < 0)\
461             exit_program(1);\
462     }\
463 }
464
465 static int64_t getutime(void)
466 {
467 #if HAVE_GETRUSAGE
468     struct rusage rusage;
469
470     getrusage(RUSAGE_SELF, &rusage);
471     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
472 #elif HAVE_GETPROCESSTIMES
473     HANDLE proc;
474     FILETIME c, e, k, u;
475     proc = GetCurrentProcess();
476     GetProcessTimes(proc, &c, &e, &k, &u);
477     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
478 #else
479     return av_gettime();
480 #endif
481 }
482
483 static void update_benchmark(const char *fmt, ...)
484 {
485     if (do_benchmark_all) {
486         int64_t t = getutime();
487         va_list va;
488         char buf[1024];
489
490         if (fmt) {
491             va_start(va, fmt);
492             vsnprintf(buf, sizeof(buf), fmt, va);
493             va_end(va);
494             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
495         }
496         current_time = t;
497     }
498 }
499
500 static void reset_options(OptionsContext *o, int is_input)
501 {
502     const OptionDef *po = options;
503     OptionsContext bak= *o;
504     int i;
505
506     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
507     while (po->name) {
508         void *dst = (uint8_t*)o + po->u.off;
509
510         if (po->flags & OPT_SPEC) {
511             SpecifierOpt **so = dst;
512             int i, *count = (int*)(so + 1);
513             for (i = 0; i < *count; i++) {
514                 av_freep(&(*so)[i].specifier);
515                 if (po->flags & OPT_STRING)
516                     av_freep(&(*so)[i].u.str);
517             }
518             av_freep(so);
519             *count = 0;
520         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
521             av_freep(dst);
522         po++;
523     }
524
525     for (i = 0; i < o->nb_stream_maps; i++)
526         av_freep(&o->stream_maps[i].linklabel);
527     av_freep(&o->stream_maps);
528     av_freep(&o->audio_channel_maps);
529     av_freep(&o->streamid_map);
530
531     memset(o, 0, sizeof(*o));
532
533     if(is_input) o->recording_time = bak.recording_time;
534     else         o->recording_time = INT64_MAX;
535     o->mux_max_delay  = 0.7;
536     o->limit_filesize = UINT64_MAX;
537     o->chapters_input_file = INT_MAX;
538
539     uninit_opts();
540     init_opts();
541 }
542
543 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
544 {
545     if (codec && codec->pix_fmts) {
546         const enum PixelFormat *p = codec->pix_fmts;
547         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
548         enum PixelFormat best= PIX_FMT_NONE;
549         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
550             if (st->codec->codec_id == CODEC_ID_MJPEG) {
551                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
552             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
553                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
554                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
555             }
556         }
557         for (; *p != PIX_FMT_NONE; p++) {
558             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
559             if (*p == target)
560                 break;
561         }
562         if (*p == PIX_FMT_NONE) {
563             if (target != PIX_FMT_NONE)
564                 av_log(NULL, AV_LOG_WARNING,
565                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
566                        av_pix_fmt_descriptors[target].name,
567                        codec->name,
568                        av_pix_fmt_descriptors[best].name);
569             return best;
570         }
571     }
572     return target;
573 }
574
575 static char *choose_pix_fmts(OutputStream *ost)
576 {
577      if (ost->keep_pix_fmt) {
578         if (ost->filter)
579             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
580                                             AVFILTER_AUTO_CONVERT_NONE);
581         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
582             return NULL;
583         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
584     }
585     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
586         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
587     } else if (ost->enc && ost->enc->pix_fmts) {
588         const enum PixelFormat *p;
589         AVIOContext *s = NULL;
590         uint8_t *ret;
591         int len;
592
593         if (avio_open_dyn_buf(&s) < 0)
594             exit_program(1);
595
596         p = ost->enc->pix_fmts;
597         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
598             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
599                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
600             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
601                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
602                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
603             }
604         }
605
606         for (; *p != PIX_FMT_NONE; p++) {
607             const char *name = av_get_pix_fmt_name(*p);
608             avio_printf(s, "%s:", name);
609         }
610         len = avio_close_dyn_buf(s, &ret);
611         ret[len - 1] = 0;
612         return ret;
613     } else
614         return NULL;
615 }
616
617 /**
618  * Define a function for building a string containing a list of
619  * allowed formats,
620  */
621 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
622 static char *choose_ ## var ## s(OutputStream *ost)                             \
623 {                                                                               \
624     if (ost->st->codec->var != none) {                                          \
625         get_name(ost->st->codec->var);                                          \
626         return av_strdup(name);                                                 \
627     } else if (ost->enc->supported_list) {                                      \
628         const type *p;                                                          \
629         AVIOContext *s = NULL;                                                  \
630         uint8_t *ret;                                                           \
631         int len;                                                                \
632                                                                                 \
633         if (avio_open_dyn_buf(&s) < 0)                                          \
634             exit_program(1);                                                    \
635                                                                                 \
636         for (p = ost->enc->supported_list; *p != none; p++) {                   \
637             get_name(*p);                                                       \
638             avio_printf(s, "%s" separator, name);                               \
639         }                                                                       \
640         len = avio_close_dyn_buf(s, &ret);                                      \
641         ret[len - 1] = 0;                                                       \
642         return ret;                                                             \
643     } else                                                                      \
644         return NULL;                                                            \
645 }
646
647 #define GET_PIX_FMT_NAME(pix_fmt)\
648     const char *name = av_get_pix_fmt_name(pix_fmt);
649
650 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
651 //                   GET_PIX_FMT_NAME, ":")
652
653 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
654     const char *name = av_get_sample_fmt_name(sample_fmt)
655
656 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
657                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
658
659 #define GET_SAMPLE_RATE_NAME(rate)\
660     char name[16];\
661     snprintf(name, sizeof(name), "%d", rate);
662
663 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
664                   GET_SAMPLE_RATE_NAME, ",")
665
666 #define GET_CH_LAYOUT_NAME(ch_layout)\
667     char name[16];\
668     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
669
670 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
671                   GET_CH_LAYOUT_NAME, ",")
672
673 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
674 {
675     FilterGraph *fg = av_mallocz(sizeof(*fg));
676
677     if (!fg)
678         exit_program(1);
679     fg->index = nb_filtergraphs;
680
681     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
682                              fg->nb_outputs + 1);
683     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
684         exit_program(1);
685     fg->outputs[0]->ost   = ost;
686     fg->outputs[0]->graph = fg;
687
688     ost->filter = fg->outputs[0];
689
690     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
691                             fg->nb_inputs + 1);
692     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
693         exit_program(1);
694     fg->inputs[0]->ist   = ist;
695     fg->inputs[0]->graph = fg;
696
697     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
698                               &ist->nb_filters, ist->nb_filters + 1);
699     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
700
701     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
702                               &nb_filtergraphs, nb_filtergraphs + 1);
703     filtergraphs[nb_filtergraphs - 1] = fg;
704
705     return fg;
706 }
707
708 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
709 {
710     InputStream *ist = NULL;
711     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
712     int i;
713
714     // TODO: support other filter types
715     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
716         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
717                "currently.\n");
718         exit_program(1);
719     }
720
721     if (in->name) {
722         AVFormatContext *s;
723         AVStream       *st = NULL;
724         char *p;
725         int file_idx = strtol(in->name, &p, 0);
726
727         if (file_idx < 0 || file_idx >= nb_input_files) {
728             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
729                    file_idx, fg->graph_desc);
730             exit_program(1);
731         }
732         s = input_files[file_idx]->ctx;
733
734         for (i = 0; i < s->nb_streams; i++) {
735             if (s->streams[i]->codec->codec_type != type)
736                 continue;
737             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
738                 st = s->streams[i];
739                 break;
740             }
741         }
742         if (!st) {
743             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
744                    "matches no streams.\n", p, fg->graph_desc);
745             exit_program(1);
746         }
747         ist = input_streams[input_files[file_idx]->ist_index + st->index];
748     } else {
749         /* find the first unused stream of corresponding type */
750         for (i = 0; i < nb_input_streams; i++) {
751             ist = input_streams[i];
752             if (ist->st->codec->codec_type == type && ist->discard)
753                 break;
754         }
755         if (i == nb_input_streams) {
756             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
757                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
758                    in->filter_ctx->name);
759             exit_program(1);
760         }
761     }
762     ist->discard         = 0;
763     ist->decoding_needed = 1;
764     ist->st->discard = AVDISCARD_NONE;
765
766     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
767                             &fg->nb_inputs, fg->nb_inputs + 1);
768     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
769         exit_program(1);
770     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
771     fg->inputs[fg->nb_inputs - 1]->graph = fg;
772
773     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
774                               &ist->nb_filters, ist->nb_filters + 1);
775     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
776 }
777
778 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
779 {
780     char *pix_fmts;
781     OutputStream *ost = ofilter->ost;
782     AVCodecContext *codec = ost->st->codec;
783     AVFilterContext *last_filter = out->filter_ctx;
784     int pad_idx = out->pad_idx;
785     int ret;
786     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
787
788 #if FF_API_OLD_VSINK_API
789     ret = avfilter_graph_create_filter(&ofilter->filter,
790                                        avfilter_get_by_name("buffersink"),
791                                        "ffmpeg_buffersink", NULL, NULL, fg->graph);
792 #else
793     ret = avfilter_graph_create_filter(&ofilter->filter,
794                                        avfilter_get_by_name("buffersink"),
795                                        "ffmpeg_buffersink", NULL, buffersink_params, fg->graph);
796 #endif
797     av_freep(&buffersink_params);
798
799     if (ret < 0)
800         return ret;
801
802     if (codec->width || codec->height) {
803         char args[255];
804         AVFilterContext *filter;
805
806         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
807                  codec->width,
808                  codec->height,
809                  (unsigned)ost->sws_flags);
810         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
811                                                 NULL, args, NULL, fg->graph)) < 0)
812             return ret;
813         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
814             return ret;
815
816         last_filter = filter;
817         pad_idx = 0;
818     }
819
820     if ((pix_fmts = choose_pix_fmts(ost))) {
821         AVFilterContext *filter;
822         if ((ret = avfilter_graph_create_filter(&filter,
823                                                 avfilter_get_by_name("format"),
824                                                 "format", pix_fmts, NULL,
825                                                 fg->graph)) < 0)
826             return ret;
827         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
828             return ret;
829
830         last_filter = filter;
831         pad_idx     = 0;
832         av_freep(&pix_fmts);
833     }
834
835     if (ost->frame_rate.num && 0) {
836         AVFilterContext *fps;
837         char args[255];
838
839         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
840                  ost->frame_rate.den);
841         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
842                                            "fps", args, NULL, fg->graph);
843         if (ret < 0)
844             return ret;
845
846         ret = avfilter_link(last_filter, pad_idx, fps, 0);
847         if (ret < 0)
848             return ret;
849         last_filter = fps;
850         pad_idx = 0;
851     }
852
853     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
854         return ret;
855
856     return 0;
857 }
858
859 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
860 {
861     OutputStream *ost = ofilter->ost;
862     AVCodecContext *codec  = ost->st->codec;
863     AVFilterContext *last_filter = out->filter_ctx;
864     int pad_idx = out->pad_idx;
865     char *sample_fmts, *sample_rates, *channel_layouts;
866     int ret;
867
868     ret = avfilter_graph_create_filter(&ofilter->filter,
869                                        avfilter_get_by_name("abuffersink_old"),
870                                        "ffmpeg_abuffersink_old", NULL, NULL, fg->graph);
871     if (ret < 0)
872         return ret;
873
874 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
875     AVFilterContext *filt_ctx;                                              \
876                                                                             \
877     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
878            "similarly to -af " filter_name "=%s.\n", arg);                  \
879                                                                             \
880     ret = avfilter_graph_create_filter(&filt_ctx,                           \
881                                        avfilter_get_by_name(filter_name),   \
882                                        filter_name, arg, NULL, fg->graph);  \
883     if (ret < 0)                                                            \
884         return ret;                                                         \
885                                                                             \
886     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
887     if (ret < 0)                                                            \
888         return ret;                                                         \
889                                                                             \
890     last_filter = filt_ctx;                                                 \
891     pad_idx = 0;                                                            \
892 } while (0)
893     if (ost->audio_channels_mapped) {
894         int i;
895         AVBPrint pan_buf;
896         av_bprint_init(&pan_buf, 256, 8192);
897         av_bprintf(&pan_buf, "0x%"PRIx64,
898                    av_get_default_channel_layout(ost->audio_channels_mapped));
899         for (i = 0; i < ost->audio_channels_mapped; i++)
900             if (ost->audio_channels_map[i] != -1)
901                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
902
903         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
904         av_bprint_finalize(&pan_buf, NULL);
905     }
906
907     if (codec->channels && !codec->channel_layout)
908         codec->channel_layout = av_get_default_channel_layout(codec->channels);
909
910     sample_fmts     = choose_sample_fmts(ost);
911     sample_rates    = choose_sample_rates(ost);
912     channel_layouts = choose_channel_layouts(ost);
913     if (sample_fmts || sample_rates || channel_layouts) {
914         AVFilterContext *format;
915         char args[256];
916         int len = 0;
917
918         if (sample_fmts)
919             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
920                             sample_fmts);
921         if (sample_rates)
922             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
923                             sample_rates);
924         if (channel_layouts)
925             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
926                             channel_layouts);
927         args[len - 1] = 0;
928
929         av_freep(&sample_fmts);
930         av_freep(&sample_rates);
931         av_freep(&channel_layouts);
932
933         ret = avfilter_graph_create_filter(&format,
934                                            avfilter_get_by_name("aformat"),
935                                            "aformat", args, NULL, fg->graph);
936         if (ret < 0)
937             return ret;
938
939         ret = avfilter_link(last_filter, pad_idx, format, 0);
940         if (ret < 0)
941             return ret;
942
943         last_filter = format;
944         pad_idx = 0;
945     }
946
947     if (audio_sync_method > 0 && 0) {
948         char args[256] = {0};
949
950         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
951         if (audio_sync_method > 1)
952             av_strlcatf(args, sizeof(args), ":max_soft_comp=%d", -audio_sync_method);
953         AUTO_INSERT_FILTER("-async", "aresample", args);
954     }
955
956     if (audio_volume != 256 && 0) {
957         char args[256];
958
959         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
960         AUTO_INSERT_FILTER("-vol", "volume", args);
961     }
962
963     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
964         return ret;
965
966     return 0;
967 }
968
969 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
970 {                                                                  \
971     AVFilterContext *ctx = inout->filter_ctx;                      \
972     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
973     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
974     AVIOContext *pb;                                               \
975                                                                    \
976     if (avio_open_dyn_buf(&pb) < 0)                                \
977         exit_program(1);                                           \
978                                                                    \
979     avio_printf(pb, "%s", ctx->filter->name);                      \
980     if (nb_pads > 1)                                               \
981         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
982     avio_w8(pb, 0);                                                \
983     avio_close_dyn_buf(pb, &f->name);                              \
984 }
985
986 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
987 {
988     av_freep(&ofilter->name);
989     DESCRIBE_FILTER_LINK(ofilter, out, 0);
990
991     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
992     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
993     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
994     default: av_assert0(0);
995     }
996 }
997
998 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
999                                         AVFilterInOut *in)
1000 {
1001     AVFilterContext *first_filter = in->filter_ctx;
1002     AVFilter *filter = avfilter_get_by_name("buffer");
1003     InputStream *ist = ifilter->ist;
1004     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1005                                                       ist->framerate.num} :
1006                                          ist->st->time_base;
1007     AVRational fr = ist->framerate.num ? ist->framerate :
1008                                          ist->st->r_frame_rate;
1009     AVRational sar;
1010     AVBPrint args;
1011     int pad_idx = in->pad_idx;
1012     int ret;
1013
1014     sar = ist->st->sample_aspect_ratio.num ?
1015           ist->st->sample_aspect_ratio :
1016           ist->st->codec->sample_aspect_ratio;
1017     if(!sar.den)
1018         sar = (AVRational){0,1};
1019     av_bprint_init(&args, 0, 1);
1020     av_bprintf(&args,
1021              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1022              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1023              ist->st->codec->height, ist->st->codec->pix_fmt,
1024              tb.num, tb.den, sar.num, sar.den,
1025              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1026     if (fr.num && fr.den)
1027         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1028
1029     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
1030                                             args.str, NULL, fg->graph)) < 0)
1031         return ret;
1032
1033     if (ist->framerate.num) {
1034         AVFilterContext *setpts;
1035
1036         if ((ret = avfilter_graph_create_filter(&setpts,
1037                                                 avfilter_get_by_name("setpts"),
1038                                                 "setpts", "N", NULL,
1039                                                 fg->graph)) < 0)
1040             return ret;
1041
1042         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1043             return ret;
1044
1045         first_filter = setpts;
1046         pad_idx = 0;
1047     }
1048
1049     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1050         return ret;
1051     return 0;
1052 }
1053
1054 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1055                                         AVFilterInOut *in)
1056 {
1057     AVFilterContext *first_filter = in->filter_ctx;
1058     AVFilter *filter = avfilter_get_by_name("abuffer");
1059     InputStream *ist = ifilter->ist;
1060     int pad_idx = in->pad_idx;
1061     char args[255];
1062     int ret;
1063
1064     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1065              ":channel_layout=0x%"PRIx64,
1066              ist->st->time_base.num, ist->st->time_base.den,
1067              ist->st->codec->sample_rate,
1068              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1069              ist->st->codec->channel_layout);
1070
1071     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1072                                             in->name, args, NULL,
1073                                             fg->graph)) < 0)
1074         return ret;
1075
1076 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1077     AVFilterContext *filt_ctx;                                              \
1078                                                                             \
1079     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1080            "similarly to -af " filter_name "=%s.\n", arg);                  \
1081                                                                             \
1082     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1083                                        avfilter_get_by_name(filter_name),   \
1084                                        filter_name, arg, NULL, fg->graph);  \
1085     if (ret < 0)                                                            \
1086         return ret;                                                         \
1087                                                                             \
1088     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1089     if (ret < 0)                                                            \
1090         return ret;                                                         \
1091                                                                             \
1092     first_filter = filt_ctx;                                                  \
1093 } while (0)
1094
1095     if (audio_sync_method > 0) {
1096         char args[256] = {0};
1097
1098         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1099         if (audio_sync_method > 1)
1100             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1101         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1102     }
1103
1104 //     if (ost->audio_channels_mapped) {
1105 //         int i;
1106 //         AVBPrint pan_buf;
1107 //         av_bprint_init(&pan_buf, 256, 8192);
1108 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1109 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1110 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1111 //             if (ost->audio_channels_map[i] != -1)
1112 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1113 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1114 //         av_bprint_finalize(&pan_buf, NULL);
1115 //     }
1116
1117     if (audio_volume != 256) {
1118         char args[256];
1119
1120         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1121         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1122     }
1123     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1124         return ret;
1125
1126     return 0;
1127 }
1128
1129 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1130                                   AVFilterInOut *in)
1131 {
1132     av_freep(&ifilter->name);
1133     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1134
1135     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
1136     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1137     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1138     default: av_assert0(0);
1139     }
1140 }
1141
1142 static int configure_filtergraph(FilterGraph *fg)
1143 {
1144     AVFilterInOut *inputs, *outputs, *cur;
1145     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1146     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1147                                       fg->graph_desc;
1148
1149     avfilter_graph_free(&fg->graph);
1150     if (!(fg->graph = avfilter_graph_alloc()))
1151         return AVERROR(ENOMEM);
1152
1153     if (simple) {
1154         OutputStream *ost = fg->outputs[0]->ost;
1155         char args[255];
1156         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1157         fg->graph->scale_sws_opts = av_strdup(args);
1158     }
1159
1160     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1161         return ret;
1162
1163     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1164         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1165                "exactly one input and output.\n", graph_desc);
1166         return AVERROR(EINVAL);
1167     }
1168
1169     for (cur = inputs; !simple && init && cur; cur = cur->next)
1170         init_input_filter(fg, cur);
1171
1172     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1173         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1174             return ret;
1175     avfilter_inout_free(&inputs);
1176
1177     if (!init || simple) {
1178         /* we already know the mappings between lavfi outputs and output streams,
1179          * so we can finish the setup */
1180         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1181             configure_output_filter(fg, fg->outputs[i], cur);
1182         avfilter_inout_free(&outputs);
1183
1184         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1185             return ret;
1186     } else {
1187         /* wait until output mappings are processed */
1188         for (cur = outputs; cur;) {
1189             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1190                                      &fg->nb_outputs, fg->nb_outputs + 1);
1191             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1192                 exit_program(1);
1193             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1194             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1195             cur = cur->next;
1196             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1197         }
1198     }
1199
1200     return 0;
1201 }
1202
1203 static int configure_complex_filters(void)
1204 {
1205     int i, ret = 0;
1206
1207     for (i = 0; i < nb_filtergraphs; i++)
1208         if (!filtergraphs[i]->graph &&
1209             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1210             return ret;
1211     return 0;
1212 }
1213
1214 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1215 {
1216     int i;
1217     for (i = 0; i < fg->nb_inputs; i++)
1218         if (fg->inputs[i]->ist == ist)
1219             return 1;
1220     return 0;
1221 }
1222
1223 static void term_exit(void)
1224 {
1225     av_log(NULL, AV_LOG_QUIET, "%s", "");
1226 #if HAVE_TERMIOS_H
1227     if(restore_tty)
1228         tcsetattr (0, TCSANOW, &oldtty);
1229 #endif
1230 }
1231
1232 static volatile int received_sigterm = 0;
1233
1234 static void sigterm_handler(int sig)
1235 {
1236     received_sigterm = sig;
1237     received_nb_signals++;
1238     term_exit();
1239     if(received_nb_signals > 3)
1240         exit(123);
1241 }
1242
1243 static void term_init(void)
1244 {
1245 #if HAVE_TERMIOS_H
1246     if(!run_as_daemon){
1247         struct termios tty;
1248         int istty = 1;
1249 #if HAVE_ISATTY
1250         istty = isatty(0) && isatty(2);
1251 #endif
1252         if (istty && tcgetattr (0, &tty) == 0) {
1253             oldtty = tty;
1254             restore_tty = 1;
1255             atexit(term_exit);
1256
1257             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1258                              |INLCR|IGNCR|ICRNL|IXON);
1259             tty.c_oflag |= OPOST;
1260             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1261             tty.c_cflag &= ~(CSIZE|PARENB);
1262             tty.c_cflag |= CS8;
1263             tty.c_cc[VMIN] = 1;
1264             tty.c_cc[VTIME] = 0;
1265
1266             tcsetattr (0, TCSANOW, &tty);
1267         }
1268         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1269     }
1270 #endif
1271     avformat_network_deinit();
1272
1273     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1274     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1275 #ifdef SIGXCPU
1276     signal(SIGXCPU, sigterm_handler);
1277 #endif
1278 }
1279
1280 /* read a key without blocking */
1281 static int read_key(void)
1282 {
1283     unsigned char ch;
1284 #if HAVE_TERMIOS_H
1285     int n = 1;
1286     struct timeval tv;
1287     fd_set rfds;
1288
1289     FD_ZERO(&rfds);
1290     FD_SET(0, &rfds);
1291     tv.tv_sec = 0;
1292     tv.tv_usec = 0;
1293     n = select(1, &rfds, NULL, NULL, &tv);
1294     if (n > 0) {
1295         n = read(0, &ch, 1);
1296         if (n == 1)
1297             return ch;
1298
1299         return n;
1300     }
1301 #elif HAVE_KBHIT
1302 #    if HAVE_PEEKNAMEDPIPE
1303     static int is_pipe;
1304     static HANDLE input_handle;
1305     DWORD dw, nchars;
1306     if(!input_handle){
1307         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1308         is_pipe = !GetConsoleMode(input_handle, &dw);
1309     }
1310
1311     if (stdin->_cnt > 0) {
1312         read(0, &ch, 1);
1313         return ch;
1314     }
1315     if (is_pipe) {
1316         /* When running under a GUI, you will end here. */
1317         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1318             return -1;
1319         //Read it
1320         if(nchars != 0) {
1321             read(0, &ch, 1);
1322             return ch;
1323         }else{
1324             return -1;
1325         }
1326     }
1327 #    endif
1328     if(kbhit())
1329         return(getch());
1330 #endif
1331     return -1;
1332 }
1333
1334 static int decode_interrupt_cb(void *ctx)
1335 {
1336     return received_nb_signals > 1;
1337 }
1338
1339 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1340
1341 void av_noreturn exit_program(int ret)
1342 {
1343     int i, j;
1344
1345     for (i = 0; i < nb_filtergraphs; i++) {
1346         avfilter_graph_free(&filtergraphs[i]->graph);
1347         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1348             av_freep(&filtergraphs[i]->inputs[j]->name);
1349             av_freep(&filtergraphs[i]->inputs[j]);
1350         }
1351         av_freep(&filtergraphs[i]->inputs);
1352         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1353             av_freep(&filtergraphs[i]->outputs[j]->name);
1354             av_freep(&filtergraphs[i]->outputs[j]);
1355         }
1356         av_freep(&filtergraphs[i]->outputs);
1357         av_freep(&filtergraphs[i]);
1358     }
1359     av_freep(&filtergraphs);
1360
1361     /* close files */
1362     for (i = 0; i < nb_output_files; i++) {
1363         AVFormatContext *s = output_files[i]->ctx;
1364         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1365             avio_close(s->pb);
1366         avformat_free_context(s);
1367         av_dict_free(&output_files[i]->opts);
1368         av_freep(&output_files[i]);
1369     }
1370     for (i = 0; i < nb_output_streams; i++) {
1371         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1372         while (bsfc) {
1373             AVBitStreamFilterContext *next = bsfc->next;
1374             av_bitstream_filter_close(bsfc);
1375             bsfc = next;
1376         }
1377         output_streams[i]->bitstream_filters = NULL;
1378
1379         av_freep(&output_streams[i]->filtered_frame);
1380         av_freep(&output_streams[i]->avfilter);
1381         av_freep(&output_streams[i]);
1382     }
1383     for (i = 0; i < nb_input_files; i++) {
1384         avformat_close_input(&input_files[i]->ctx);
1385         av_freep(&input_files[i]);
1386     }
1387     for (i = 0; i < nb_input_streams; i++) {
1388         av_freep(&input_streams[i]->decoded_frame);
1389         av_dict_free(&input_streams[i]->opts);
1390         free_buffer_pool(&input_streams[i]->buffer_pool);
1391         av_freep(&input_streams[i]->filters);
1392         av_freep(&input_streams[i]);
1393     }
1394
1395     if (vstats_file)
1396         fclose(vstats_file);
1397     av_free(vstats_filename);
1398
1399     av_freep(&input_streams);
1400     av_freep(&input_files);
1401     av_freep(&output_streams);
1402     av_freep(&output_files);
1403
1404     uninit_opts();
1405
1406     avfilter_uninit();
1407     avformat_network_deinit();
1408
1409     if (received_sigterm) {
1410         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1411                (int) received_sigterm);
1412         exit (255);
1413     }
1414
1415     exit(ret);
1416 }
1417
1418 static void assert_avoptions(AVDictionary *m)
1419 {
1420     AVDictionaryEntry *t;
1421     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1422         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1423         exit_program(1);
1424     }
1425 }
1426
1427 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1428 {
1429     const char *codec_string = encoder ? "encoder" : "decoder";
1430     AVCodec *codec;
1431     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1432         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1433         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1434                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1435                 codec_string, c->codec->name);
1436         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1437         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1438             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1439                    codec_string, codec->name);
1440         exit_program(1);
1441     }
1442 }
1443
1444 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1445 {
1446     if (codec && codec->sample_fmts) {
1447         const enum AVSampleFormat *p = codec->sample_fmts;
1448         for (; *p != -1; p++) {
1449             if (*p == st->codec->sample_fmt)
1450                 break;
1451         }
1452         if (*p == -1) {
1453             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1454                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1455             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1456             av_log(NULL, AV_LOG_WARNING,
1457                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1458                    av_get_sample_fmt_name(st->codec->sample_fmt),
1459                    codec->name,
1460                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1461             st->codec->sample_fmt = codec->sample_fmts[0];
1462         }
1463     }
1464 }
1465
1466 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1467 {
1468     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1469     AVCodecContext          *avctx = ost->st->codec;
1470     int ret;
1471
1472     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1473         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1474         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1475
1476     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1477         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1478         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1479             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1480             pkt->pts = pkt->dts = max;
1481         }
1482     }
1483
1484     /*
1485      * Audio encoders may split the packets --  #frames in != #packets out.
1486      * But there is no reordering, so we can limit the number of output packets
1487      * by simply dropping them here.
1488      * Counting encoded video frames needs to be done separately because of
1489      * reordering, see do_video_out()
1490      */
1491     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1492         if (ost->frame_number >= ost->max_frames) {
1493             av_free_packet(pkt);
1494             return;
1495         }
1496         ost->frame_number++;
1497     }
1498
1499     while (bsfc) {
1500         AVPacket new_pkt = *pkt;
1501         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1502                                            &new_pkt.data, &new_pkt.size,
1503                                            pkt->data, pkt->size,
1504                                            pkt->flags & AV_PKT_FLAG_KEY);
1505         if (a > 0) {
1506             av_free_packet(pkt);
1507             new_pkt.destruct = av_destruct_packet;
1508         } else if (a < 0) {
1509             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1510                    bsfc->filter->name, pkt->stream_index,
1511                    avctx->codec ? avctx->codec->name : "copy");
1512             print_error("", a);
1513             if (exit_on_error)
1514                 exit_program(1);
1515         }
1516         *pkt = new_pkt;
1517
1518         bsfc = bsfc->next;
1519     }
1520
1521     pkt->stream_index = ost->index;
1522     ret = av_interleaved_write_frame(s, pkt);
1523     if (ret < 0) {
1524         print_error("av_interleaved_write_frame()", ret);
1525         exit_program(1);
1526     }
1527 }
1528
1529 static int check_recording_time(OutputStream *ost)
1530 {
1531     OutputFile *of = output_files[ost->file_index];
1532
1533     if (of->recording_time != INT64_MAX &&
1534         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1535                       AV_TIME_BASE_Q) >= 0) {
1536         ost->is_past_recording_time = 1;
1537         return 0;
1538     }
1539     return 1;
1540 }
1541
1542 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1543                          AVFrame *frame)
1544 {
1545     AVCodecContext *enc = ost->st->codec;
1546     AVPacket pkt;
1547     int got_packet = 0;
1548
1549     av_init_packet(&pkt);
1550     pkt.data = NULL;
1551     pkt.size = 0;
1552 #if 0
1553     if (!check_recording_time(ost))
1554         return;
1555 #endif
1556     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1557         frame->pts = ost->sync_opts;
1558     ost->sync_opts = frame->pts + frame->nb_samples;
1559
1560     av_assert0(pkt.size || !pkt.data);
1561     update_benchmark(NULL);
1562     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1563         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1564         exit_program(1);
1565     }
1566     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1567
1568     if (got_packet) {
1569         if (pkt.pts != AV_NOPTS_VALUE)
1570             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1571         if (pkt.dts != AV_NOPTS_VALUE)
1572             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1573         if (pkt.duration > 0)
1574             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1575
1576         if (debug_ts) {
1577             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1578                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1579                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1580                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1581         }
1582
1583         write_frame(s, &pkt, ost);
1584
1585         audio_size += pkt.size;
1586         av_free_packet(&pkt);
1587     }
1588 }
1589
1590 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1591 {
1592     AVCodecContext *dec;
1593     AVPicture *picture2;
1594     AVPicture picture_tmp;
1595     uint8_t *buf = 0;
1596
1597     dec = ist->st->codec;
1598
1599     /* deinterlace : must be done before any resize */
1600     if (do_deinterlace) {
1601         int size;
1602
1603         /* create temporary picture */
1604         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1605         buf  = av_malloc(size);
1606         if (!buf)
1607             return;
1608
1609         picture2 = &picture_tmp;
1610         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1611
1612         if (avpicture_deinterlace(picture2, picture,
1613                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1614             /* if error, do not deinterlace */
1615             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1616             av_free(buf);
1617             buf = NULL;
1618             picture2 = picture;
1619         }
1620     } else {
1621         picture2 = picture;
1622     }
1623
1624     if (picture != picture2)
1625         *picture = *picture2;
1626     *bufp = buf;
1627 }
1628
1629 static void do_subtitle_out(AVFormatContext *s,
1630                             OutputStream *ost,
1631                             InputStream *ist,
1632                             AVSubtitle *sub,
1633                             int64_t pts)
1634 {
1635     static uint8_t *subtitle_out = NULL;
1636     int subtitle_out_max_size = 1024 * 1024;
1637     int subtitle_out_size, nb, i;
1638     AVCodecContext *enc;
1639     AVPacket pkt;
1640
1641     if (pts == AV_NOPTS_VALUE) {
1642         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1643         if (exit_on_error)
1644             exit_program(1);
1645         return;
1646     }
1647
1648     enc = ost->st->codec;
1649
1650     if (!subtitle_out) {
1651         subtitle_out = av_malloc(subtitle_out_max_size);
1652     }
1653
1654     /* Note: DVB subtitle need one packet to draw them and one other
1655        packet to clear them */
1656     /* XXX: signal it in the codec context ? */
1657     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1658         nb = 2;
1659     else
1660         nb = 1;
1661
1662     for (i = 0; i < nb; i++) {
1663         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1664
1665         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1666         // start_display_time is required to be 0
1667         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1668         sub->end_display_time  -= sub->start_display_time;
1669         sub->start_display_time = 0;
1670         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1671                                                     subtitle_out_max_size, sub);
1672         if (subtitle_out_size < 0) {
1673             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1674             exit_program(1);
1675         }
1676
1677         av_init_packet(&pkt);
1678         pkt.data = subtitle_out;
1679         pkt.size = subtitle_out_size;
1680         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1681         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1682         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1683             /* XXX: the pts correction is handled here. Maybe handling
1684                it in the codec would be better */
1685             if (i == 0)
1686                 pkt.pts += 90 * sub->start_display_time;
1687             else
1688                 pkt.pts += 90 * sub->end_display_time;
1689         }
1690         write_frame(s, &pkt, ost);
1691         subtitle_size += pkt.size;
1692     }
1693 }
1694
1695 static void do_video_out(AVFormatContext *s,
1696                          OutputStream *ost,
1697                          AVFrame *in_picture,
1698                          float quality)
1699 {
1700     int ret, format_video_sync;
1701     AVPacket pkt;
1702     AVCodecContext *enc = ost->st->codec;
1703     int nb_frames;
1704     double sync_ipts, delta;
1705     double duration = 0;
1706     int frame_size = 0;
1707     InputStream *ist = NULL;
1708
1709     if (ost->source_index >= 0)
1710         ist = input_streams[ost->source_index];
1711
1712     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1713         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1714
1715     sync_ipts = in_picture->pts;
1716     delta = sync_ipts - ost->sync_opts + duration;
1717
1718     /* by default, we output a single frame */
1719     nb_frames = 1;
1720
1721     format_video_sync = video_sync_method;
1722     if (format_video_sync == VSYNC_AUTO)
1723         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1724
1725     switch (format_video_sync) {
1726     case VSYNC_CFR:
1727         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1728         if (delta < -1.1)
1729             nb_frames = 0;
1730         else if (delta > 1.1)
1731             nb_frames = lrintf(delta);
1732         break;
1733     case VSYNC_VFR:
1734         if (delta <= -0.6)
1735             nb_frames = 0;
1736         else if (delta > 0.6)
1737             ost->sync_opts = lrint(sync_ipts);
1738         break;
1739     case VSYNC_DROP:
1740     case VSYNC_PASSTHROUGH:
1741         ost->sync_opts = lrint(sync_ipts);
1742         break;
1743     default:
1744         av_assert0(0);
1745     }
1746
1747     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1748     if (nb_frames == 0) {
1749         nb_frames_drop++;
1750         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1751         return;
1752     } else if (nb_frames > 1) {
1753         nb_frames_dup += nb_frames - 1;
1754         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1755     }
1756
1757
1758 duplicate_frame:
1759     av_init_packet(&pkt);
1760     pkt.data = NULL;
1761     pkt.size = 0;
1762
1763     in_picture->pts = ost->sync_opts;
1764
1765     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1766         enc->codec->id == CODEC_ID_RAWVIDEO) {
1767         /* raw pictures are written as AVPicture structure to
1768            avoid any copies. We support temporarily the older
1769            method. */
1770         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1771         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1772         pkt.data   = (uint8_t *)in_picture;
1773         pkt.size   =  sizeof(AVPicture);
1774         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1775         pkt.flags |= AV_PKT_FLAG_KEY;
1776
1777         write_frame(s, &pkt, ost);
1778         video_size += pkt.size;
1779     } else {
1780         int got_packet;
1781         AVFrame big_picture;
1782
1783         big_picture = *in_picture;
1784         /* better than nothing: use input picture interlaced
1785            settings */
1786         big_picture.interlaced_frame = in_picture->interlaced_frame;
1787         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1788             if (ost->top_field_first == -1)
1789                 big_picture.top_field_first = in_picture->top_field_first;
1790             else
1791                 big_picture.top_field_first = !!ost->top_field_first;
1792         }
1793
1794         /* handles same_quant here. This is not correct because it may
1795            not be a global option */
1796         big_picture.quality = quality;
1797         if (!enc->me_threshold)
1798             big_picture.pict_type = 0;
1799         if (ost->forced_kf_index < ost->forced_kf_count &&
1800             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1801             big_picture.pict_type = AV_PICTURE_TYPE_I;
1802             ost->forced_kf_index++;
1803         }
1804         update_benchmark(NULL);
1805         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1806         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1807         if (ret < 0) {
1808             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1809             exit_program(1);
1810         }
1811
1812         if (got_packet) {
1813             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1814                 pkt.pts = ost->sync_opts;
1815
1816             if (pkt.pts != AV_NOPTS_VALUE)
1817                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1818             if (pkt.dts != AV_NOPTS_VALUE)
1819                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1820
1821             if (debug_ts) {
1822                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1823                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1824                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1825                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1826             }
1827
1828             write_frame(s, &pkt, ost);
1829             frame_size = pkt.size;
1830             video_size += pkt.size;
1831             av_free_packet(&pkt);
1832
1833             /* if two pass, output log */
1834             if (ost->logfile && enc->stats_out) {
1835                 fprintf(ost->logfile, "%s", enc->stats_out);
1836             }
1837         }
1838     }
1839     ost->sync_opts++;
1840     /*
1841      * For video, number of frames in == number of packets out.
1842      * But there may be reordering, so we can't throw away frames on encoder
1843      * flush, we need to limit them here, before they go into encoder.
1844      */
1845     ost->frame_number++;
1846
1847     if(--nb_frames)
1848         goto duplicate_frame;
1849
1850     if (vstats_filename && frame_size)
1851         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1852 }
1853
1854 static double psnr(double d)
1855 {
1856     return -10.0 * log(d) / log(10.0);
1857 }
1858
1859 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1860                            int frame_size)
1861 {
1862     AVCodecContext *enc;
1863     int frame_number;
1864     double ti1, bitrate, avg_bitrate;
1865
1866     /* this is executed just the first time do_video_stats is called */
1867     if (!vstats_file) {
1868         vstats_file = fopen(vstats_filename, "w");
1869         if (!vstats_file) {
1870             perror("fopen");
1871             exit_program(1);
1872         }
1873     }
1874
1875     enc = ost->st->codec;
1876     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1877         frame_number = ost->frame_number;
1878         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1879         if (enc->flags&CODEC_FLAG_PSNR)
1880             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1881
1882         fprintf(vstats_file,"f_size= %6d ", frame_size);
1883         /* compute pts value */
1884         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1885         if (ti1 < 0.01)
1886             ti1 = 0.01;
1887
1888         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1889         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1890         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1891                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1892         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1893     }
1894 }
1895
1896 /* check for new output on any of the filtergraphs */
1897 static int poll_filters(void)
1898 {
1899     AVFilterBufferRef *picref;
1900     AVFrame *filtered_frame = NULL;
1901     int i, ret, ret_all;
1902     unsigned nb_success, nb_eof;
1903     int64_t frame_pts;
1904
1905     while (1) {
1906         /* Reap all buffers present in the buffer sinks */
1907         for (i = 0; i < nb_output_streams; i++) {
1908             OutputStream *ost = output_streams[i];
1909             OutputFile    *of = output_files[ost->file_index];
1910             int ret = 0;
1911
1912             if (!ost->filter)
1913                 continue;
1914
1915             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1916                 return AVERROR(ENOMEM);
1917             } else
1918                 avcodec_get_frame_defaults(ost->filtered_frame);
1919             filtered_frame = ost->filtered_frame;
1920
1921             while (!ost->is_past_recording_time) {
1922                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1923                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1924                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1925                                                     ost->st->codec->frame_size);
1926                 else
1927 #ifdef SINKA
1928                     ret = av_buffersink_read(ost->filter->filter, &picref);
1929 #else
1930                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1931                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1932 #endif
1933                 if (ret < 0) {
1934                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1935                         char buf[256];
1936                         av_strerror(ret, buf, sizeof(buf));
1937                         av_log(NULL, AV_LOG_WARNING,
1938                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1939                     }
1940                     break;
1941                 }
1942                 frame_pts = AV_NOPTS_VALUE;
1943                 if (picref->pts != AV_NOPTS_VALUE) {
1944                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1945                                                     ost->filter->filter->inputs[0]->time_base,
1946                                                     ost->st->codec->time_base) -
1947                                         av_rescale_q(of->start_time,
1948                                                     AV_TIME_BASE_Q,
1949                                                     ost->st->codec->time_base);
1950
1951                     if (of->start_time && filtered_frame->pts < 0) {
1952                         avfilter_unref_buffer(picref);
1953                         continue;
1954                     }
1955                 }
1956                 //if (ost->source_index >= 0)
1957                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1958
1959
1960                 switch (ost->filter->filter->inputs[0]->type) {
1961                 case AVMEDIA_TYPE_VIDEO:
1962                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1963                     filtered_frame->pts = frame_pts;
1964                     if (!ost->frame_aspect_ratio)
1965                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1966
1967                     do_video_out(of->ctx, ost, filtered_frame,
1968                                  same_quant ? ost->last_quality :
1969                                               ost->st->codec->global_quality);
1970                     break;
1971                 case AVMEDIA_TYPE_AUDIO:
1972                     avfilter_copy_buf_props(filtered_frame, picref);
1973                     filtered_frame->pts = frame_pts;
1974                     do_audio_out(of->ctx, ost, filtered_frame);
1975                     break;
1976                 default:
1977                     // TODO support subtitle filters
1978                     av_assert0(0);
1979                 }
1980
1981                 avfilter_unref_buffer(picref);
1982             }
1983         }
1984         /* Request frames through all the graphs */
1985         ret_all = nb_success = nb_eof = 0;
1986         for (i = 0; i < nb_filtergraphs; i++) {
1987             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1988             if (!ret) {
1989                 nb_success++;
1990             } else if (ret == AVERROR_EOF) {
1991                 nb_eof++;
1992             } else if (ret != AVERROR(EAGAIN)) {
1993                 char buf[256];
1994                 av_strerror(ret, buf, sizeof(buf));
1995                 av_log(NULL, AV_LOG_WARNING,
1996                        "Error in request_frame(): %s\n", buf);
1997                 ret_all = ret;
1998             }
1999         }
2000         if (!nb_success)
2001             break;
2002         /* Try again if anything succeeded */
2003     }
2004     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2005 }
2006
2007 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2008 {
2009     char buf[1024];
2010     OutputStream *ost;
2011     AVFormatContext *oc;
2012     int64_t total_size;
2013     AVCodecContext *enc;
2014     int frame_number, vid, i;
2015     double bitrate;
2016     int64_t pts = INT64_MAX;
2017     static int64_t last_time = -1;
2018     static int qp_histogram[52];
2019     int hours, mins, secs, us;
2020
2021     if (!print_stats && !is_last_report)
2022         return;
2023
2024     if (!is_last_report) {
2025         if (last_time == -1) {
2026             last_time = cur_time;
2027             return;
2028         }
2029         if ((cur_time - last_time) < 500000)
2030             return;
2031         last_time = cur_time;
2032     }
2033
2034
2035     oc = output_files[0]->ctx;
2036
2037     total_size = avio_size(oc->pb);
2038     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2039         total_size = avio_tell(oc->pb);
2040         if (total_size < 0)
2041             total_size = 0;
2042     }
2043
2044     buf[0] = '\0';
2045     vid = 0;
2046     for (i = 0; i < nb_output_streams; i++) {
2047         float q = -1;
2048         ost = output_streams[i];
2049         enc = ost->st->codec;
2050         if (!ost->stream_copy && enc->coded_frame)
2051             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2052         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2053             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2054         }
2055         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2056             float fps, t = (cur_time-timer_start) / 1000000.0;
2057
2058             frame_number = ost->frame_number;
2059             fps = t > 1 ? frame_number / t : 0;
2060             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2061                      frame_number, fps < 9.95, fps, q);
2062             if (is_last_report)
2063                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2064             if (qp_hist) {
2065                 int j;
2066                 int qp = lrintf(q);
2067                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2068                     qp_histogram[qp]++;
2069                 for (j = 0; j < 32; j++)
2070                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2071             }
2072             if (enc->flags&CODEC_FLAG_PSNR) {
2073                 int j;
2074                 double error, error_sum = 0;
2075                 double scale, scale_sum = 0;
2076                 char type[3] = { 'Y','U','V' };
2077                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2078                 for (j = 0; j < 3; j++) {
2079                     if (is_last_report) {
2080                         error = enc->error[j];
2081                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2082                     } else {
2083                         error = enc->coded_frame->error[j];
2084                         scale = enc->width * enc->height * 255.0 * 255.0;
2085                     }
2086                     if (j)
2087                         scale /= 4;
2088                     error_sum += error;
2089                     scale_sum += scale;
2090                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2091                 }
2092                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2093             }
2094             vid = 1;
2095         }
2096         /* compute min output value */
2097         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2098                                       ost->st->time_base, AV_TIME_BASE_Q));
2099     }
2100
2101     secs = pts / AV_TIME_BASE;
2102     us = pts % AV_TIME_BASE;
2103     mins = secs / 60;
2104     secs %= 60;
2105     hours = mins / 60;
2106     mins %= 60;
2107
2108     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2109
2110     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2111              "size=%8.0fkB time=", total_size / 1024.0);
2112     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2113              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2114              (100 * us) / AV_TIME_BASE);
2115     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2116              "bitrate=%6.1fkbits/s", bitrate);
2117
2118     if (nb_frames_dup || nb_frames_drop)
2119         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2120                 nb_frames_dup, nb_frames_drop);
2121
2122     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2123
2124     fflush(stderr);
2125
2126     if (is_last_report) {
2127         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
2128         av_log(NULL, AV_LOG_INFO, "\n");
2129         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
2130                video_size / 1024.0,
2131                audio_size / 1024.0,
2132                subtitle_size / 1024.0,
2133                extra_size / 1024.0,
2134                100.0 * (total_size - raw) / raw
2135         );
2136         if(video_size + audio_size + subtitle_size + extra_size == 0){
2137             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2138         }
2139     }
2140 }
2141
2142 static void flush_encoders(void)
2143 {
2144     int i, ret;
2145
2146     for (i = 0; i < nb_output_streams; i++) {
2147         OutputStream   *ost = output_streams[i];
2148         AVCodecContext *enc = ost->st->codec;
2149         AVFormatContext *os = output_files[ost->file_index]->ctx;
2150         int stop_encoding = 0;
2151
2152         if (!ost->encoding_needed)
2153             continue;
2154
2155         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2156             continue;
2157         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2158             continue;
2159
2160         for (;;) {
2161             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2162             const char *desc;
2163             int64_t *size;
2164
2165             switch (ost->st->codec->codec_type) {
2166             case AVMEDIA_TYPE_AUDIO:
2167                 encode = avcodec_encode_audio2;
2168                 desc   = "Audio";
2169                 size   = &audio_size;
2170                 break;
2171             case AVMEDIA_TYPE_VIDEO:
2172                 encode = avcodec_encode_video2;
2173                 desc   = "Video";
2174                 size   = &video_size;
2175                 break;
2176             default:
2177                 stop_encoding = 1;
2178             }
2179
2180             if (encode) {
2181                 AVPacket pkt;
2182                 int got_packet;
2183                 av_init_packet(&pkt);
2184                 pkt.data = NULL;
2185                 pkt.size = 0;
2186
2187                 update_benchmark(NULL);
2188                 ret = encode(enc, &pkt, NULL, &got_packet);
2189                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2190                 if (ret < 0) {
2191                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2192                     exit_program(1);
2193                 }
2194                 *size += pkt.size;
2195                 if (ost->logfile && enc->stats_out) {
2196                     fprintf(ost->logfile, "%s", enc->stats_out);
2197                 }
2198                 if (!got_packet) {
2199                     stop_encoding = 1;
2200                     break;
2201                 }
2202                 if (pkt.pts != AV_NOPTS_VALUE)
2203                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2204                 if (pkt.dts != AV_NOPTS_VALUE)
2205                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2206                 write_frame(os, &pkt, ost);
2207             }
2208
2209             if (stop_encoding)
2210                 break;
2211         }
2212     }
2213 }
2214
2215 /*
2216  * Check whether a packet from ist should be written into ost at this time
2217  */
2218 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2219 {
2220     OutputFile *of = output_files[ost->file_index];
2221     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2222
2223     if (ost->source_index != ist_index)
2224         return 0;
2225
2226     if (of->start_time && ist->pts < of->start_time)
2227         return 0;
2228
2229     if (of->recording_time != INT64_MAX &&
2230         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2231                       (AVRational){ 1, 1000000 }) >= 0) {
2232         ost->is_past_recording_time = 1;
2233         return 0;
2234     }
2235
2236     return 1;
2237 }
2238
2239 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2240 {
2241     OutputFile *of = output_files[ost->file_index];
2242     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2243     AVPicture pict;
2244     AVPacket opkt;
2245
2246     av_init_packet(&opkt);
2247
2248     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2249         !ost->copy_initial_nonkeyframes)
2250         return;
2251
2252     /* force the input stream PTS */
2253     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2254         audio_size += pkt->size;
2255     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2256         video_size += pkt->size;
2257         ost->sync_opts++;
2258     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2259         subtitle_size += pkt->size;
2260     }
2261
2262     if (pkt->pts != AV_NOPTS_VALUE)
2263         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2264     else
2265         opkt.pts = AV_NOPTS_VALUE;
2266
2267     if (pkt->dts == AV_NOPTS_VALUE)
2268         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2269     else
2270         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2271     opkt.dts -= ost_tb_start_time;
2272
2273     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2274     opkt.flags    = pkt->flags;
2275
2276     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2277     if (  ost->st->codec->codec_id != CODEC_ID_H264
2278        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2279        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2280        && ost->st->codec->codec_id != CODEC_ID_VC1
2281        ) {
2282         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2283             opkt.destruct = av_destruct_packet;
2284     } else {
2285         opkt.data = pkt->data;
2286         opkt.size = pkt->size;
2287     }
2288     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2289         /* store AVPicture in AVPacket, as expected by the output format */
2290         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2291         opkt.data = (uint8_t *)&pict;
2292         opkt.size = sizeof(AVPicture);
2293         opkt.flags |= AV_PKT_FLAG_KEY;
2294     }
2295
2296     write_frame(of->ctx, &opkt, ost);
2297     ost->st->codec->frame_number++;
2298     av_free_packet(&opkt);
2299 }
2300
2301 static void rate_emu_sleep(InputStream *ist)
2302 {
2303     if (input_files[ist->file_index]->rate_emu) {
2304         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2305         int64_t now = av_gettime() - ist->start;
2306         if (pts > now)
2307             usleep(pts - now);
2308     }
2309 }
2310
2311 static int guess_input_channel_layout(InputStream *ist)
2312 {
2313     AVCodecContext *dec = ist->st->codec;
2314
2315     if (!dec->channel_layout) {
2316         char layout_name[256];
2317
2318         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2319         if (!dec->channel_layout)
2320             return 0;
2321         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2322                                      dec->channels, dec->channel_layout);
2323         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2324                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2325     }
2326     return 1;
2327 }
2328
2329 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2330 {
2331     AVFrame *decoded_frame;
2332     AVCodecContext *avctx = ist->st->codec;
2333     int i, ret, resample_changed;
2334
2335     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2336         return AVERROR(ENOMEM);
2337     else
2338         avcodec_get_frame_defaults(ist->decoded_frame);
2339     decoded_frame = ist->decoded_frame;
2340
2341     update_benchmark(NULL);
2342     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2343     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2344     if (ret < 0) {
2345         return ret;
2346     }
2347     if (avctx->sample_rate <= 0) {
2348         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2349         return AVERROR_INVALIDDATA;
2350     }
2351
2352     if (!*got_output) {
2353         /* no audio frame */
2354         if (!pkt->size)
2355             for (i = 0; i < ist->nb_filters; i++)
2356                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2357                                      AV_BUFFERSRC_FLAG_NO_COPY);
2358         return ret;
2359     }
2360
2361     /* if the decoder provides a pts, use it instead of the last packet pts.
2362        the decoder could be delaying output by a packet or more. */
2363     if (decoded_frame->pts != AV_NOPTS_VALUE)
2364         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2365     else if (pkt->pts != AV_NOPTS_VALUE) {
2366         decoded_frame->pts = pkt->pts;
2367         pkt->pts           = AV_NOPTS_VALUE;
2368     }else
2369         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2370
2371
2372 #if 1
2373     /* increment next_dts to use for the case where the input stream does not
2374        have timestamps or there are multiple frames in the packet */
2375     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2376                      avctx->sample_rate;
2377     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2378                      avctx->sample_rate;
2379 #endif
2380
2381     rate_emu_sleep(ist);
2382
2383     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2384                        ist->resample_channels       != avctx->channels               ||
2385                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2386                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2387     if (resample_changed) {
2388         char layout1[64], layout2[64];
2389
2390         if (!guess_input_channel_layout(ist)) {
2391             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2392                    "layout for Input Stream #%d.%d\n", ist->file_index,
2393                    ist->st->index);
2394             exit_program(1);
2395         }
2396         decoded_frame->channel_layout = avctx->channel_layout;
2397
2398         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2399                                      ist->resample_channel_layout);
2400         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2401                                      decoded_frame->channel_layout);
2402
2403         av_log(NULL, AV_LOG_INFO,
2404                "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
2405                ist->file_index, ist->st->index,
2406                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2407                ist->resample_channels, layout1,
2408                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2409                avctx->channels, layout2);
2410
2411         ist->resample_sample_fmt     = decoded_frame->format;
2412         ist->resample_sample_rate    = decoded_frame->sample_rate;
2413         ist->resample_channel_layout = decoded_frame->channel_layout;
2414         ist->resample_channels       = avctx->channels;
2415
2416         for (i = 0; i < nb_filtergraphs; i++)
2417             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2418                 configure_filtergraph(filtergraphs[i]) < 0) {
2419                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2420                 exit_program(1);
2421             }
2422     }
2423
2424     for (i = 0; i < ist->nb_filters; i++)
2425         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2426
2427     return ret;
2428 }
2429
2430 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2431 {
2432     AVFrame *decoded_frame;
2433     void *buffer_to_free = NULL;
2434     int i, ret = 0, resample_changed;
2435     int64_t best_effort_timestamp;
2436     AVRational *frame_sample_aspect;
2437     float quality;
2438
2439     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2440         return AVERROR(ENOMEM);
2441     else
2442         avcodec_get_frame_defaults(ist->decoded_frame);
2443     decoded_frame = ist->decoded_frame;
2444     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2445
2446     update_benchmark(NULL);
2447     ret = avcodec_decode_video2(ist->st->codec,
2448                                 decoded_frame, got_output, pkt);
2449     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2450     if (ret < 0)
2451         return ret;
2452
2453     quality = same_quant ? decoded_frame->quality : 0;
2454     if (!*got_output) {
2455         /* no picture yet */
2456         if (!pkt->size)
2457             for (i = 0; i < ist->nb_filters; i++)
2458                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2459         return ret;
2460     }
2461
2462     if(ist->top_field_first>=0)
2463         decoded_frame->top_field_first = ist->top_field_first;
2464
2465     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2466     if(best_effort_timestamp != AV_NOPTS_VALUE)
2467         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2468
2469     pkt->size = 0;
2470     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2471
2472     rate_emu_sleep(ist);
2473
2474     if (ist->st->sample_aspect_ratio.num)
2475         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2476
2477     resample_changed = ist->resample_width   != decoded_frame->width  ||
2478                        ist->resample_height  != decoded_frame->height ||
2479                        ist->resample_pix_fmt != decoded_frame->format;
2480     if (resample_changed) {
2481         av_log(NULL, AV_LOG_INFO,
2482                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2483                ist->file_index, ist->st->index,
2484                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2485                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2486
2487         ist->resample_width   = decoded_frame->width;
2488         ist->resample_height  = decoded_frame->height;
2489         ist->resample_pix_fmt = decoded_frame->format;
2490
2491         for (i = 0; i < nb_filtergraphs; i++)
2492             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2493                 configure_filtergraph(filtergraphs[i]) < 0) {
2494                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2495                 exit_program(1);
2496             }
2497     }
2498
2499     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2500     for (i = 0; i < ist->nb_filters; i++) {
2501         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2502                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2503                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2504         // XXX what an ugly hack
2505         if (ist->filters[i]->graph->nb_outputs == 1)
2506             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2507
2508         if (!frame_sample_aspect->num)
2509             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2510         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2511             FrameBuffer      *buf = decoded_frame->opaque;
2512             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2513                                         decoded_frame->data, decoded_frame->linesize,
2514                                         AV_PERM_READ | AV_PERM_PRESERVE,
2515                                         ist->st->codec->width, ist->st->codec->height,
2516                                         ist->st->codec->pix_fmt);
2517
2518             avfilter_copy_frame_props(fb, decoded_frame);
2519             fb->buf->priv           = buf;
2520             fb->buf->free           = filter_release_buffer;
2521
2522             av_assert0(buf->refcount>0);
2523             buf->refcount++;
2524             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2525                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2526                                  AV_BUFFERSRC_FLAG_NO_COPY);
2527         } else
2528         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2529             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2530             exit_program(1);
2531         }
2532
2533     }
2534
2535     av_free(buffer_to_free);
2536     return ret;
2537 }
2538
2539 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2540 {
2541     AVSubtitle subtitle;
2542     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2543                                           &subtitle, got_output, pkt);
2544     if (ret < 0)
2545         return ret;
2546     if (!*got_output)
2547         return ret;
2548
2549     rate_emu_sleep(ist);
2550
2551     for (i = 0; i < nb_output_streams; i++) {
2552         OutputStream *ost = output_streams[i];
2553
2554         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2555             continue;
2556
2557         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2558     }
2559
2560     avsubtitle_free(&subtitle);
2561     return ret;
2562 }
2563
2564 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2565 static int output_packet(InputStream *ist, const AVPacket *pkt)
2566 {
2567     int ret = 0, i;
2568     int got_output;
2569
2570     AVPacket avpkt;
2571     if (!ist->saw_first_ts) {
2572         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2573         ist->pts = 0;
2574         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2575             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2576             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2577         }
2578         ist->saw_first_ts = 1;
2579     }
2580
2581     if (ist->next_dts == AV_NOPTS_VALUE)
2582         ist->next_dts = ist->dts;
2583     if (ist->next_pts == AV_NOPTS_VALUE)
2584         ist->next_pts = ist->pts;
2585
2586     if (pkt == NULL) {
2587         /* EOF handling */
2588         av_init_packet(&avpkt);
2589         avpkt.data = NULL;
2590         avpkt.size = 0;
2591         goto handle_eof;
2592     } else {
2593         avpkt = *pkt;
2594     }
2595
2596     if (pkt->dts != AV_NOPTS_VALUE) {
2597         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2598         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2599             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2600     }
2601
2602     // while we have more to decode or while the decoder did output something on EOF
2603     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2604         int duration;
2605     handle_eof:
2606
2607         ist->pts = ist->next_pts;
2608         ist->dts = ist->next_dts;
2609
2610         if (avpkt.size && avpkt.size != pkt->size) {
2611             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2612                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2613             ist->showed_multi_packet_warning = 1;
2614         }
2615
2616         switch (ist->st->codec->codec_type) {
2617         case AVMEDIA_TYPE_AUDIO:
2618             ret = decode_audio    (ist, &avpkt, &got_output);
2619             break;
2620         case AVMEDIA_TYPE_VIDEO:
2621             ret = decode_video    (ist, &avpkt, &got_output);
2622             if (avpkt.duration) {
2623                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2624             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2625                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2626                 duration = ((int64_t)AV_TIME_BASE *
2627                                 ist->st->codec->time_base.num * ticks) /
2628                                 ist->st->codec->time_base.den;
2629             } else
2630                 duration = 0;
2631
2632             if(ist->dts != AV_NOPTS_VALUE && duration) {
2633                 ist->next_dts += duration;
2634             }else
2635                 ist->next_dts = AV_NOPTS_VALUE;
2636
2637             if (got_output)
2638                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2639             break;
2640         case AVMEDIA_TYPE_SUBTITLE:
2641             ret = transcode_subtitles(ist, &avpkt, &got_output);
2642             break;
2643         default:
2644             return -1;
2645         }
2646
2647         if (ret < 0)
2648             return ret;
2649
2650         avpkt.dts=
2651         avpkt.pts= AV_NOPTS_VALUE;
2652
2653         // touch data and size only if not EOF
2654         if (pkt) {
2655             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2656                 ret = avpkt.size;
2657             avpkt.data += ret;
2658             avpkt.size -= ret;
2659         }
2660         if (!got_output) {
2661             continue;
2662         }
2663     }
2664
2665     /* handle stream copy */
2666     if (!ist->decoding_needed) {
2667         rate_emu_sleep(ist);
2668         ist->dts = ist->next_dts;
2669         switch (ist->st->codec->codec_type) {
2670         case AVMEDIA_TYPE_AUDIO:
2671             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2672                              ist->st->codec->sample_rate;
2673             break;
2674         case AVMEDIA_TYPE_VIDEO:
2675             if (pkt->duration) {
2676                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2677             } else if(ist->st->codec->time_base.num != 0) {
2678                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2679                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2680                                   ist->st->codec->time_base.num * ticks) /
2681                                   ist->st->codec->time_base.den;
2682             }
2683             break;
2684         }
2685         ist->pts = ist->dts;
2686         ist->next_pts = ist->next_dts;
2687     }
2688     for (i = 0; pkt && i < nb_output_streams; i++) {
2689         OutputStream *ost = output_streams[i];
2690
2691         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2692             continue;
2693
2694         do_streamcopy(ist, ost, pkt);
2695     }
2696
2697     return 0;
2698 }
2699
2700 static void print_sdp(void)
2701 {
2702     char sdp[2048];
2703     int i;
2704     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2705
2706     if (!avc)
2707         exit_program(1);
2708     for (i = 0; i < nb_output_files; i++)
2709         avc[i] = output_files[i]->ctx;
2710
2711     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2712     printf("SDP:\n%s\n", sdp);
2713     fflush(stdout);
2714     av_freep(&avc);
2715 }
2716
2717 static int init_input_stream(int ist_index, char *error, int error_len)
2718 {
2719     InputStream *ist = input_streams[ist_index];
2720
2721     if (ist->decoding_needed) {
2722         AVCodec *codec = ist->dec;
2723         if (!codec) {
2724             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2725                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2726             return AVERROR(EINVAL);
2727         }
2728
2729         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2730         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2731             ist->st->codec->get_buffer     = codec_get_buffer;
2732             ist->st->codec->release_buffer = codec_release_buffer;
2733             ist->st->codec->opaque         = &ist->buffer_pool;
2734         }
2735
2736         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2737             av_dict_set(&ist->opts, "threads", "auto", 0);
2738         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2739             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2740                     ist->file_index, ist->st->index);
2741             return AVERROR(EINVAL);
2742         }
2743         assert_codec_experimental(ist->st->codec, 0);
2744         assert_avoptions(ist->opts);
2745     }
2746
2747     ist->next_pts = AV_NOPTS_VALUE;
2748     ist->next_dts = AV_NOPTS_VALUE;
2749     ist->is_start = 1;
2750
2751     return 0;
2752 }
2753
2754 static InputStream *get_input_stream(OutputStream *ost)
2755 {
2756     if (ost->source_index >= 0)
2757         return input_streams[ost->source_index];
2758     return NULL;
2759 }
2760
2761 static int transcode_init(void)
2762 {
2763     int ret = 0, i, j, k;
2764     AVFormatContext *oc;
2765     AVCodecContext *codec, *icodec = NULL;
2766     OutputStream *ost;
2767     InputStream *ist;
2768     char error[1024];
2769     int want_sdp = 1;
2770
2771     /* init framerate emulation */
2772     for (i = 0; i < nb_input_files; i++) {
2773         InputFile *ifile = input_files[i];
2774         if (ifile->rate_emu)
2775             for (j = 0; j < ifile->nb_streams; j++)
2776                 input_streams[j + ifile->ist_index]->start = av_gettime();
2777     }
2778
2779     /* output stream init */
2780     for (i = 0; i < nb_output_files; i++) {
2781         oc = output_files[i]->ctx;
2782         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2783             av_dump_format(oc, i, oc->filename, 1);
2784             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2785             return AVERROR(EINVAL);
2786         }
2787     }
2788
2789     /* init complex filtergraphs */
2790     for (i = 0; i < nb_filtergraphs; i++)
2791         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2792             return ret;
2793
2794     /* for each output stream, we compute the right encoding parameters */
2795     for (i = 0; i < nb_output_streams; i++) {
2796         ost = output_streams[i];
2797         oc  = output_files[ost->file_index]->ctx;
2798         ist = get_input_stream(ost);
2799
2800         if (ost->attachment_filename)
2801             continue;
2802
2803         codec  = ost->st->codec;
2804
2805         if (ist) {
2806             icodec = ist->st->codec;
2807
2808             ost->st->disposition          = ist->st->disposition;
2809             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2810             codec->chroma_sample_location = icodec->chroma_sample_location;
2811         }
2812
2813         if (ost->stream_copy) {
2814             uint64_t extra_size;
2815
2816             av_assert0(ist && !ost->filter);
2817
2818             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2819
2820             if (extra_size > INT_MAX) {
2821                 return AVERROR(EINVAL);
2822             }
2823
2824             /* if stream_copy is selected, no need to decode or encode */
2825             codec->codec_id   = icodec->codec_id;
2826             codec->codec_type = icodec->codec_type;
2827
2828             if (!codec->codec_tag) {
2829                 if (!oc->oformat->codec_tag ||
2830                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2831                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2832                     codec->codec_tag = icodec->codec_tag;
2833             }
2834
2835             codec->bit_rate       = icodec->bit_rate;
2836             codec->rc_max_rate    = icodec->rc_max_rate;
2837             codec->rc_buffer_size = icodec->rc_buffer_size;
2838             codec->field_order    = icodec->field_order;
2839             codec->extradata      = av_mallocz(extra_size);
2840             if (!codec->extradata) {
2841                 return AVERROR(ENOMEM);
2842             }
2843             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2844             codec->extradata_size= icodec->extradata_size;
2845             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2846
2847             codec->time_base = ist->st->time_base;
2848             /*
2849              * Avi is a special case here because it supports variable fps but
2850              * having the fps and timebase differe significantly adds quite some
2851              * overhead
2852              */
2853             if(!strcmp(oc->oformat->name, "avi")) {
2854                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2855                                  && av_q2d(ist->st->time_base) < 1.0/500
2856                     || copy_tb==0){
2857                     codec->time_base = icodec->time_base;
2858                     codec->time_base.num *= icodec->ticks_per_frame;
2859                     codec->time_base.den *= 2;
2860                     codec->ticks_per_frame = 2;
2861                 }
2862             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2863                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2864                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2865             ) {
2866                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2867                                 && av_q2d(ist->st->time_base) < 1.0/500
2868                    || copy_tb==0){
2869                     codec->time_base = icodec->time_base;
2870                     codec->time_base.num *= icodec->ticks_per_frame;
2871                 }
2872             }
2873
2874             if(ost->frame_rate.num)
2875                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2876
2877             av_reduce(&codec->time_base.num, &codec->time_base.den,
2878                         codec->time_base.num, codec->time_base.den, INT_MAX);
2879
2880             switch (codec->codec_type) {
2881             case AVMEDIA_TYPE_AUDIO:
2882                 if (audio_volume != 256) {
2883                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2884                     exit_program(1);
2885                 }
2886                 codec->channel_layout     = icodec->channel_layout;
2887                 codec->sample_rate        = icodec->sample_rate;
2888                 codec->channels           = icodec->channels;
2889                 codec->frame_size         = icodec->frame_size;
2890                 codec->audio_service_type = icodec->audio_service_type;
2891                 codec->block_align        = icodec->block_align;
2892                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2893                     codec->block_align= 0;
2894                 if(codec->codec_id == CODEC_ID_AC3)
2895                     codec->block_align= 0;
2896                 break;
2897             case AVMEDIA_TYPE_VIDEO:
2898                 codec->pix_fmt            = icodec->pix_fmt;
2899                 codec->width              = icodec->width;
2900                 codec->height             = icodec->height;
2901                 codec->has_b_frames       = icodec->has_b_frames;
2902                 if (!codec->sample_aspect_ratio.num) {
2903                     codec->sample_aspect_ratio   =
2904                     ost->st->sample_aspect_ratio =
2905                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2906                         ist->st->codec->sample_aspect_ratio.num ?
2907                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2908                 }
2909                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2910                 break;
2911             case AVMEDIA_TYPE_SUBTITLE:
2912                 codec->width  = icodec->width;
2913                 codec->height = icodec->height;
2914                 break;
2915             case AVMEDIA_TYPE_DATA:
2916             case AVMEDIA_TYPE_ATTACHMENT:
2917                 break;
2918             default:
2919                 abort();
2920             }
2921         } else {
2922             if (!ost->enc)
2923                 ost->enc = avcodec_find_encoder(codec->codec_id);
2924             if (!ost->enc) {
2925                 /* should only happen when a default codec is not present. */
2926                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2927                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2928                 ret = AVERROR(EINVAL);
2929                 goto dump_format;
2930             }
2931
2932             if (ist)
2933                 ist->decoding_needed = 1;
2934             ost->encoding_needed = 1;
2935
2936             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2937                 if (ost->filter && !ost->frame_rate.num)
2938                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2939                 if (ist && !ost->frame_rate.num)
2940                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2941                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2942                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2943                     ost->frame_rate = ost->enc->supported_framerates[idx];
2944                 }
2945             }
2946
2947             if (!ost->filter &&
2948                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2949                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2950                     FilterGraph *fg;
2951                     fg = init_simple_filtergraph(ist, ost);
2952                     if (configure_filtergraph(fg)) {
2953                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2954                         exit(1);
2955                     }
2956             }
2957
2958             switch (codec->codec_type) {
2959             case AVMEDIA_TYPE_AUDIO:
2960                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2961                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2962                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2963                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2964                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2965                 break;
2966             case AVMEDIA_TYPE_VIDEO:
2967                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2968                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2969                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2970                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2971                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2972                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2973                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2974                 }
2975                 for (j = 0; j < ost->forced_kf_count; j++)
2976                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2977                                                          AV_TIME_BASE_Q,
2978                                                          codec->time_base);
2979
2980                 codec->width  = ost->filter->filter->inputs[0]->w;
2981                 codec->height = ost->filter->filter->inputs[0]->h;
2982                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2983                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2984                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2985                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2986                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2987
2988                 if (!icodec ||
2989                     codec->width   != icodec->width  ||
2990                     codec->height  != icodec->height ||
2991                     codec->pix_fmt != icodec->pix_fmt) {
2992                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2993                 }
2994
2995                 break;
2996             case AVMEDIA_TYPE_SUBTITLE:
2997                 codec->time_base = (AVRational){1, 1000};
2998                 break;
2999             default:
3000                 abort();
3001                 break;
3002             }
3003             /* two pass mode */
3004             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3005                 char logfilename[1024];
3006                 FILE *f;
3007
3008                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3009                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3010                          i);
3011                 if (!strcmp(ost->enc->name, "libx264")) {
3012                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3013                 } else {
3014                     if (codec->flags & CODEC_FLAG_PASS2) {
3015                         char  *logbuffer;
3016                         size_t logbuffer_size;
3017                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3018                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3019                                    logfilename);
3020                             exit_program(1);
3021                         }
3022                         codec->stats_in = logbuffer;
3023                     }
3024                     if (codec->flags & CODEC_FLAG_PASS1) {
3025                         f = fopen(logfilename, "wb");
3026                         if (!f) {
3027                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3028                                 logfilename, strerror(errno));
3029                             exit_program(1);
3030                         }
3031                         ost->logfile = f;
3032                     }
3033                 }
3034             }
3035         }
3036     }
3037
3038     /* open each encoder */
3039     for (i = 0; i < nb_output_streams; i++) {
3040         ost = output_streams[i];
3041         if (ost->encoding_needed) {
3042             AVCodec      *codec = ost->enc;
3043             AVCodecContext *dec = NULL;
3044
3045             if ((ist = get_input_stream(ost)))
3046                 dec = ist->st->codec;
3047             if (dec && dec->subtitle_header) {
3048                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3049                 if (!ost->st->codec->subtitle_header) {
3050                     ret = AVERROR(ENOMEM);
3051                     goto dump_format;
3052                 }
3053                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3054                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3055             }
3056             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3057                 av_dict_set(&ost->opts, "threads", "auto", 0);
3058             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3059                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3060                         ost->file_index, ost->index);
3061                 ret = AVERROR(EINVAL);
3062                 goto dump_format;
3063             }
3064             assert_codec_experimental(ost->st->codec, 1);
3065             assert_avoptions(ost->opts);
3066             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3067                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3068                                              " It takes bits/s as argument, not kbits/s\n");
3069             extra_size += ost->st->codec->extradata_size;
3070
3071             if (ost->st->codec->me_threshold)
3072                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3073         }
3074     }
3075
3076     /* init input streams */
3077     for (i = 0; i < nb_input_streams; i++)
3078         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3079             goto dump_format;
3080
3081     /* discard unused programs */
3082     for (i = 0; i < nb_input_files; i++) {
3083         InputFile *ifile = input_files[i];
3084         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3085             AVProgram *p = ifile->ctx->programs[j];
3086             int discard  = AVDISCARD_ALL;
3087
3088             for (k = 0; k < p->nb_stream_indexes; k++)
3089                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3090                     discard = AVDISCARD_DEFAULT;
3091                     break;
3092                 }
3093             p->discard = discard;
3094         }
3095     }
3096
3097     /* open files and write file headers */
3098     for (i = 0; i < nb_output_files; i++) {
3099         oc = output_files[i]->ctx;
3100         oc->interrupt_callback = int_cb;
3101         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3102             char errbuf[128];
3103             const char *errbuf_ptr = errbuf;
3104             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3105                 errbuf_ptr = strerror(AVUNERROR(ret));
3106             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3107             ret = AVERROR(EINVAL);
3108             goto dump_format;
3109         }
3110 //         assert_avoptions(output_files[i]->opts);
3111         if (strcmp(oc->oformat->name, "rtp")) {
3112             want_sdp = 0;
3113         }
3114     }
3115
3116  dump_format:
3117     /* dump the file output parameters - cannot be done before in case
3118        of stream copy */
3119     for (i = 0; i < nb_output_files; i++) {
3120         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3121     }
3122
3123     /* dump the stream mapping */
3124     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3125     for (i = 0; i < nb_input_streams; i++) {
3126         ist = input_streams[i];
3127
3128         for (j = 0; j < ist->nb_filters; j++) {
3129             if (ist->filters[j]->graph->graph_desc) {
3130                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3131                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3132                        ist->filters[j]->name);
3133                 if (nb_filtergraphs > 1)
3134                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3135                 av_log(NULL, AV_LOG_INFO, "\n");
3136             }
3137         }
3138     }
3139
3140     for (i = 0; i < nb_output_streams; i++) {
3141         ost = output_streams[i];
3142
3143         if (ost->attachment_filename) {
3144             /* an attached file */
3145             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3146                    ost->attachment_filename, ost->file_index, ost->index);
3147             continue;
3148         }
3149
3150         if (ost->filter && ost->filter->graph->graph_desc) {
3151             /* output from a complex graph */
3152             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3153             if (nb_filtergraphs > 1)
3154                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3155
3156             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3157                    ost->index, ost->enc ? ost->enc->name : "?");
3158             continue;
3159         }
3160
3161         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3162                input_streams[ost->source_index]->file_index,
3163                input_streams[ost->source_index]->st->index,
3164                ost->file_index,
3165                ost->index);
3166         if (ost->sync_ist != input_streams[ost->source_index])
3167             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3168                    ost->sync_ist->file_index,
3169                    ost->sync_ist->st->index);
3170         if (ost->stream_copy)
3171             av_log(NULL, AV_LOG_INFO, " (copy)");
3172         else
3173             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3174                    input_streams[ost->source_index]->dec->name : "?",
3175                    ost->enc ? ost->enc->name : "?");
3176         av_log(NULL, AV_LOG_INFO, "\n");
3177     }
3178
3179     if (ret) {
3180         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3181         return ret;
3182     }
3183
3184     if (want_sdp) {
3185         print_sdp();
3186     }
3187
3188     return 0;
3189 }
3190
3191 /**
3192  * @return 1 if there are still streams where more output is wanted,
3193  *         0 otherwise
3194  */
3195 static int need_output(void)
3196 {
3197     int i;
3198
3199     for (i = 0; i < nb_output_streams; i++) {
3200         OutputStream *ost    = output_streams[i];
3201         OutputFile *of       = output_files[ost->file_index];
3202         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3203
3204         if (ost->is_past_recording_time ||
3205             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3206             continue;
3207         if (ost->frame_number >= ost->max_frames) {
3208             int j;
3209             for (j = 0; j < of->ctx->nb_streams; j++)
3210                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3211             continue;
3212         }
3213
3214         return 1;
3215     }
3216
3217     return 0;
3218 }
3219
3220 static int select_input_file(uint8_t *no_packet)
3221 {
3222     int64_t ipts_min = INT64_MAX;
3223     int i, file_index = -1;
3224
3225     for (i = 0; i < nb_input_streams; i++) {
3226         InputStream *ist = input_streams[i];
3227         int64_t ipts     = ist->pts;
3228
3229         if (ist->discard || no_packet[ist->file_index])
3230             continue;
3231         if (!input_files[ist->file_index]->eof_reached) {
3232             if (ipts < ipts_min) {
3233                 ipts_min = ipts;
3234                 file_index = ist->file_index;
3235             }
3236         }
3237     }
3238
3239     return file_index;
3240 }
3241
3242 static int check_keyboard_interaction(int64_t cur_time)
3243 {
3244     int i, ret, key;
3245     static int64_t last_time;
3246     if (received_nb_signals)
3247         return AVERROR_EXIT;
3248     /* read_key() returns 0 on EOF */
3249     if(cur_time - last_time >= 100000 && !run_as_daemon){
3250         key =  read_key();
3251         last_time = cur_time;
3252     }else
3253         key = -1;
3254     if (key == 'q')
3255         return AVERROR_EXIT;
3256     if (key == '+') av_log_set_level(av_log_get_level()+10);
3257     if (key == '-') av_log_set_level(av_log_get_level()-10);
3258     if (key == 's') qp_hist     ^= 1;
3259     if (key == 'h'){
3260         if (do_hex_dump){
3261             do_hex_dump = do_pkt_dump = 0;
3262         } else if(do_pkt_dump){
3263             do_hex_dump = 1;
3264         } else
3265             do_pkt_dump = 1;
3266         av_log_set_level(AV_LOG_DEBUG);
3267     }
3268     if (key == 'c' || key == 'C'){
3269         char buf[4096], target[64], command[256], arg[256] = {0};
3270         double time;
3271         int k, n = 0;
3272         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3273         i = 0;
3274         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3275             if (k > 0)
3276                 buf[i++] = k;
3277         buf[i] = 0;
3278         if (k > 0 &&
3279             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3280             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3281                    target, time, command, arg);
3282             for (i = 0; i < nb_filtergraphs; i++) {
3283                 FilterGraph *fg = filtergraphs[i];
3284                 if (fg->graph) {
3285                     if (time < 0) {
3286                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3287                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3288                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3289                     } else {
3290                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3291                     }
3292                 }
3293             }
3294         } else {
3295             av_log(NULL, AV_LOG_ERROR,
3296                    "Parse error, at least 3 arguments were expected, "
3297                    "only %d given in string '%s'\n", n, buf);
3298         }
3299     }
3300     if (key == 'd' || key == 'D'){
3301         int debug=0;
3302         if(key == 'D') {
3303             debug = input_streams[0]->st->codec->debug<<1;
3304             if(!debug) debug = 1;
3305             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3306                 debug += debug;
3307         }else
3308             if(scanf("%d", &debug)!=1)
3309                 fprintf(stderr,"error parsing debug value\n");
3310         for(i=0;i<nb_input_streams;i++) {
3311             input_streams[i]->st->codec->debug = debug;
3312         }
3313         for(i=0;i<nb_output_streams;i++) {
3314             OutputStream *ost = output_streams[i];
3315             ost->st->codec->debug = debug;
3316         }
3317         if(debug) av_log_set_level(AV_LOG_DEBUG);
3318         fprintf(stderr,"debug=%d\n", debug);
3319     }
3320     if (key == '?'){
3321         fprintf(stderr, "key    function\n"
3322                         "?      show this help\n"
3323                         "+      increase verbosity\n"
3324                         "-      decrease verbosity\n"
3325                         "c      Send command to filtergraph\n"
3326                         "D      cycle through available debug modes\n"
3327                         "h      dump packets/hex press to cycle through the 3 states\n"
3328                         "q      quit\n"
3329                         "s      Show QP histogram\n"
3330         );
3331     }
3332     return 0;
3333 }
3334
3335 #if HAVE_PTHREADS
3336 static void *input_thread(void *arg)
3337 {
3338     InputFile *f = arg;
3339     int ret = 0;
3340
3341     while (!transcoding_finished && ret >= 0) {
3342         AVPacket pkt;
3343         ret = av_read_frame(f->ctx, &pkt);
3344
3345         if (ret == AVERROR(EAGAIN)) {
3346             usleep(10000);
3347             ret = 0;
3348             continue;
3349         } else if (ret < 0)
3350             break;
3351
3352         pthread_mutex_lock(&f->fifo_lock);
3353         while (!av_fifo_space(f->fifo))
3354             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3355
3356         av_dup_packet(&pkt);
3357         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3358
3359         pthread_mutex_unlock(&f->fifo_lock);
3360     }
3361
3362     f->finished = 1;
3363     return NULL;
3364 }
3365
3366 static void free_input_threads(void)
3367 {
3368     int i;
3369
3370     if (nb_input_files == 1)
3371         return;
3372
3373     transcoding_finished = 1;
3374
3375     for (i = 0; i < nb_input_files; i++) {
3376         InputFile *f = input_files[i];
3377         AVPacket pkt;
3378
3379         if (!f->fifo || f->joined)
3380             continue;
3381
3382         pthread_mutex_lock(&f->fifo_lock);
3383         while (av_fifo_size(f->fifo)) {
3384             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3385             av_free_packet(&pkt);
3386         }
3387         pthread_cond_signal(&f->fifo_cond);
3388         pthread_mutex_unlock(&f->fifo_lock);
3389
3390         pthread_join(f->thread, NULL);
3391         f->joined = 1;
3392
3393         while (av_fifo_size(f->fifo)) {
3394             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3395             av_free_packet(&pkt);
3396         }
3397         av_fifo_free(f->fifo);
3398     }
3399 }
3400
3401 static int init_input_threads(void)
3402 {
3403     int i, ret;
3404
3405     if (nb_input_files == 1)
3406         return 0;
3407
3408     for (i = 0; i < nb_input_files; i++) {
3409         InputFile *f = input_files[i];
3410
3411         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3412             return AVERROR(ENOMEM);
3413
3414         pthread_mutex_init(&f->fifo_lock, NULL);
3415         pthread_cond_init (&f->fifo_cond, NULL);
3416
3417         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3418             return AVERROR(ret);
3419     }
3420     return 0;
3421 }
3422
3423 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3424 {
3425     int ret = 0;
3426
3427     pthread_mutex_lock(&f->fifo_lock);
3428
3429     if (av_fifo_size(f->fifo)) {
3430         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3431         pthread_cond_signal(&f->fifo_cond);
3432     } else {
3433         if (f->finished)
3434             ret = AVERROR_EOF;
3435         else
3436             ret = AVERROR(EAGAIN);
3437     }
3438
3439     pthread_mutex_unlock(&f->fifo_lock);
3440
3441     return ret;
3442 }
3443 #endif
3444
3445 static int get_input_packet(InputFile *f, AVPacket *pkt)
3446 {
3447 #if HAVE_PTHREADS
3448     if (nb_input_files > 1)
3449         return get_input_packet_mt(f, pkt);
3450 #endif
3451     return av_read_frame(f->ctx, pkt);
3452 }
3453
3454 /*
3455  * The following code is the main loop of the file converter
3456  */
3457 static int transcode(void)
3458 {
3459     int ret, i;
3460     AVFormatContext *is, *os;
3461     OutputStream *ost;
3462     InputStream *ist;
3463     uint8_t *no_packet;
3464     int no_packet_count = 0;
3465     int64_t timer_start;
3466
3467     if (!(no_packet = av_mallocz(nb_input_files)))
3468         exit_program(1);
3469
3470     ret = transcode_init();
3471     if (ret < 0)
3472         goto fail;
3473
3474     if (!using_stdin) {
3475         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3476     }
3477
3478     timer_start = av_gettime();
3479
3480 #if HAVE_PTHREADS
3481     if ((ret = init_input_threads()) < 0)
3482         goto fail;
3483 #endif
3484
3485     for (; received_sigterm == 0;) {
3486         int file_index, ist_index;
3487         AVPacket pkt;
3488         int64_t cur_time= av_gettime();
3489
3490         /* if 'q' pressed, exits */
3491         if (!using_stdin)
3492             if (check_keyboard_interaction(cur_time) < 0)
3493                 break;
3494
3495         /* check if there's any stream where output is still needed */
3496         if (!need_output()) {
3497             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3498             break;
3499         }
3500
3501         /* select the stream that we must read now */
3502         file_index = select_input_file(no_packet);
3503         /* if none, if is finished */
3504         if (file_index < 0) {
3505             if (no_packet_count) {
3506                 no_packet_count = 0;
3507                 memset(no_packet, 0, nb_input_files);
3508                 usleep(10000);
3509                 continue;
3510             }
3511             av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3512             break;
3513         }
3514
3515         is  = input_files[file_index]->ctx;
3516         ret = get_input_packet(input_files[file_index], &pkt);
3517
3518         if (ret == AVERROR(EAGAIN)) {
3519             no_packet[file_index] = 1;
3520             no_packet_count++;
3521             continue;
3522         }
3523         if (ret < 0) {
3524             input_files[file_index]->eof_reached = 1;
3525
3526             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3527                 ist = input_streams[input_files[file_index]->ist_index + i];
3528                 if (ist->decoding_needed)
3529                     output_packet(ist, NULL);
3530             }
3531
3532             if (opt_shortest)
3533                 break;
3534             else
3535                 continue;
3536         }
3537
3538         no_packet_count = 0;
3539         memset(no_packet, 0, nb_input_files);
3540
3541         if (do_pkt_dump) {
3542             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3543                              is->streams[pkt.stream_index]);
3544         }
3545         /* the following test is needed in case new streams appear
3546            dynamically in stream : we ignore them */
3547         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3548             goto discard_packet;
3549         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3550         ist = input_streams[ist_index];
3551         if (ist->discard)
3552             goto discard_packet;
3553
3554         if (pkt.dts != AV_NOPTS_VALUE)
3555             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3556         if (pkt.pts != AV_NOPTS_VALUE)
3557             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3558
3559         if (pkt.pts != AV_NOPTS_VALUE)
3560             pkt.pts *= ist->ts_scale;
3561         if (pkt.dts != AV_NOPTS_VALUE)
3562             pkt.dts *= ist->ts_scale;
3563
3564         if (debug_ts) {
3565             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3566                     "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
3567                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3568                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3569                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3570                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3571                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3572                     input_files[ist->file_index]->ts_offset);
3573         }
3574
3575         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3576             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3577             int64_t delta   = pkt_dts - ist->next_dts;
3578             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3579             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3580                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3581                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3582                 pkt_dts+1<ist->pts){
3583                 input_files[ist->file_index]->ts_offset -= delta;
3584                 av_log(NULL, AV_LOG_DEBUG,
3585                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3586                        delta, input_files[ist->file_index]->ts_offset);
3587                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3588                 if (pkt.pts != AV_NOPTS_VALUE)
3589                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3590             }
3591             } else {
3592                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3593                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3594                      pkt_dts+1<ist->pts){
3595                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3596                     pkt.dts = AV_NOPTS_VALUE;
3597                 }
3598                 if (pkt.pts != AV_NOPTS_VALUE){
3599                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3600                     delta   = pkt_pts - ist->next_dts;
3601                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3602                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3603                         pkt_pts+1<ist->pts) {
3604                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3605                         pkt.pts = AV_NOPTS_VALUE;
3606                     }
3607                 }
3608             }
3609         }
3610
3611         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3612         if ((ret = output_packet(ist, &pkt)) < 0 ||
3613             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3614             char buf[128];
3615             av_strerror(ret, buf, sizeof(buf));
3616             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3617                    ist->file_index, ist->st->index, buf);
3618             if (exit_on_error)
3619                 exit_program(1);
3620             av_free_packet(&pkt);
3621             continue;
3622         }
3623
3624     discard_packet:
3625         av_free_packet(&pkt);
3626
3627         /* dump report by using the output first video and audio streams */
3628         print_report(0, timer_start, cur_time);
3629     }
3630 #if HAVE_PTHREADS
3631     free_input_threads();
3632 #endif
3633
3634     /* at the end of stream, we must flush the decoder buffers */
3635     for (i = 0; i < nb_input_streams; i++) {
3636         ist = input_streams[i];
3637         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3638             output_packet(ist, NULL);
3639         }
3640     }
3641     poll_filters();
3642     flush_encoders();
3643
3644     term_exit();
3645
3646     /* write the trailer if needed and close file */
3647     for (i = 0; i < nb_output_files; i++) {
3648         os = output_files[i]->ctx;
3649         av_write_trailer(os);
3650     }
3651
3652     /* dump report by using the first video and audio streams */
3653     print_report(1, timer_start, av_gettime());
3654
3655     /* close each encoder */
3656     for (i = 0; i < nb_output_streams; i++) {
3657         ost = output_streams[i];
3658         if (ost->encoding_needed) {
3659             av_freep(&ost->st->codec->stats_in);
3660             avcodec_close(ost->st->codec);
3661         }
3662     }
3663
3664     /* close each decoder */
3665     for (i = 0; i < nb_input_streams; i++) {
3666         ist = input_streams[i];
3667         if (ist->decoding_needed) {
3668             avcodec_close(ist->st->codec);
3669         }
3670     }
3671
3672     /* finished ! */
3673     ret = 0;
3674
3675  fail:
3676     av_freep(&no_packet);
3677 #if HAVE_PTHREADS
3678     free_input_threads();
3679 #endif
3680
3681     if (output_streams) {
3682         for (i = 0; i < nb_output_streams; i++) {
3683             ost = output_streams[i];
3684             if (ost) {
3685                 if (ost->stream_copy)
3686                     av_freep(&ost->st->codec->extradata);
3687                 if (ost->logfile) {
3688                     fclose(ost->logfile);
3689                     ost->logfile = NULL;
3690                 }
3691                 av_freep(&ost->st->codec->subtitle_header);
3692                 av_free(ost->forced_kf_pts);
3693                 av_dict_free(&ost->opts);
3694             }
3695         }
3696     }
3697     return ret;
3698 }
3699
3700 static int opt_frame_crop(const char *opt, const char *arg)
3701 {
3702     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3703     return AVERROR(EINVAL);
3704 }
3705
3706 static int opt_pad(const char *opt, const char *arg)
3707 {
3708     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3709     return -1;
3710 }
3711
3712 static int opt_video_channel(const char *opt, const char *arg)
3713 {
3714     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3715     return opt_default("channel", arg);
3716 }
3717
3718 static int opt_video_standard(const char *opt, const char *arg)
3719 {
3720     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3721     return opt_default("standard", arg);
3722 }
3723
3724 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3725 {
3726     audio_codec_name = arg;
3727     return parse_option(o, "codec:a", arg, options);
3728 }
3729
3730 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3731 {
3732     video_codec_name = arg;
3733     return parse_option(o, "codec:v", arg, options);
3734 }
3735
3736 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3737 {
3738     subtitle_codec_name = arg;
3739     return parse_option(o, "codec:s", arg, options);
3740 }
3741
3742 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3743 {
3744     return parse_option(o, "codec:d", arg, options);
3745 }
3746
3747 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3748 {
3749     StreamMap *m = NULL;
3750     int i, negative = 0, file_idx;
3751     int sync_file_idx = -1, sync_stream_idx = 0;
3752     char *p, *sync;
3753     char *map;
3754
3755     if (*arg == '-') {
3756         negative = 1;
3757         arg++;
3758     }
3759     map = av_strdup(arg);
3760
3761     /* parse sync stream first, just pick first matching stream */
3762     if (sync = strchr(map, ',')) {
3763         *sync = 0;
3764         sync_file_idx = strtol(sync + 1, &sync, 0);
3765         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3766             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3767             exit_program(1);
3768         }
3769         if (*sync)
3770             sync++;
3771         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3772             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3773                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3774                 sync_stream_idx = i;
3775                 break;
3776             }
3777         if (i == input_files[sync_file_idx]->nb_streams) {
3778             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3779                                        "match any streams.\n", arg);
3780             exit_program(1);
3781         }
3782     }
3783
3784
3785     if (map[0] == '[') {
3786         /* this mapping refers to lavfi output */
3787         const char *c = map + 1;
3788         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3789                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3790         m = &o->stream_maps[o->nb_stream_maps - 1];
3791         m->linklabel = av_get_token(&c, "]");
3792         if (!m->linklabel) {
3793             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3794             exit_program(1);
3795         }
3796     } else {
3797         file_idx = strtol(map, &p, 0);
3798         if (file_idx >= nb_input_files || file_idx < 0) {
3799             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3800             exit_program(1);
3801         }
3802         if (negative)
3803             /* disable some already defined maps */
3804             for (i = 0; i < o->nb_stream_maps; i++) {
3805                 m = &o->stream_maps[i];
3806                 if (file_idx == m->file_index &&
3807                     check_stream_specifier(input_files[m->file_index]->ctx,
3808                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3809                                            *p == ':' ? p + 1 : p) > 0)
3810                     m->disabled = 1;
3811             }
3812         else
3813             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3814                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3815                             *p == ':' ? p + 1 : p) <= 0)
3816                     continue;
3817                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3818                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3819                 m = &o->stream_maps[o->nb_stream_maps - 1];
3820
3821                 m->file_index   = file_idx;
3822                 m->stream_index = i;
3823
3824                 if (sync_file_idx >= 0) {
3825                     m->sync_file_index   = sync_file_idx;
3826                     m->sync_stream_index = sync_stream_idx;
3827                 } else {
3828                     m->sync_file_index   = file_idx;
3829                     m->sync_stream_index = i;
3830                 }
3831             }
3832     }
3833
3834     if (!m) {
3835         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3836         exit_program(1);
3837     }
3838
3839     av_freep(&map);
3840     return 0;
3841 }
3842
3843 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3844 {
3845     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3846                                 &o->nb_attachments, o->nb_attachments + 1);
3847     o->attachments[o->nb_attachments - 1] = arg;
3848     return 0;
3849 }
3850
3851 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3852 {
3853     int n;
3854     AVStream *st;
3855     AudioChannelMap *m;
3856
3857     o->audio_channel_maps =
3858         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3859                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3860     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3861
3862     /* muted channel syntax */
3863     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3864     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3865         m->file_idx = m->stream_idx = -1;
3866         if (n == 1)
3867             m->ofile_idx = m->ostream_idx = -1;
3868         return 0;
3869     }
3870
3871     /* normal syntax */
3872     n = sscanf(arg, "%d.%d.%d:%d.%d",
3873                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3874                &m->ofile_idx, &m->ostream_idx);
3875
3876     if (n != 3 && n != 5) {
3877         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3878                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3879         exit_program(1);
3880     }
3881
3882     if (n != 5) // only file.stream.channel specified
3883         m->ofile_idx = m->ostream_idx = -1;
3884
3885     /* check input */
3886     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3887         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3888                m->file_idx);
3889         exit_program(1);
3890     }
3891     if (m->stream_idx < 0 ||
3892         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3893         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3894                m->file_idx, m->stream_idx);
3895         exit_program(1);
3896     }
3897     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3898     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3899         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3900                m->file_idx, m->stream_idx);
3901         exit_program(1);
3902     }
3903     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3904         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3905                m->file_idx, m->stream_idx, m->channel_idx);
3906         exit_program(1);
3907     }
3908     return 0;
3909 }
3910
3911 /**
3912  * Parse a metadata specifier in arg.
3913  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3914  * @param index for type c/p, chapter/program index is written here
3915  * @param stream_spec for type s, the stream specifier is written here
3916  */
3917 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3918 {
3919     if (*arg) {
3920         *type = *arg;
3921         switch (*arg) {
3922         case 'g':
3923             break;
3924         case 's':
3925             if (*(++arg) && *arg != ':') {
3926                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3927                 exit_program(1);
3928             }
3929             *stream_spec = *arg == ':' ? arg + 1 : "";
3930             break;
3931         case 'c':
3932         case 'p':
3933             if (*(++arg) == ':')
3934                 *index = strtol(++arg, NULL, 0);
3935             break;
3936         default:
3937             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3938             exit_program(1);
3939         }
3940     } else
3941         *type = 'g';
3942 }
3943
3944 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3945 {
3946     AVDictionary **meta_in = NULL;
3947     AVDictionary **meta_out = NULL;
3948     int i, ret = 0;
3949     char type_in, type_out;
3950     const char *istream_spec = NULL, *ostream_spec = NULL;
3951     int idx_in = 0, idx_out = 0;
3952
3953     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3954     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3955
3956     if (!ic) {
3957         if (type_out == 'g' || !*outspec)
3958             o->metadata_global_manual = 1;
3959         if (type_out == 's' || !*outspec)
3960             o->metadata_streams_manual = 1;
3961         if (type_out == 'c' || !*outspec)
3962             o->metadata_chapters_manual = 1;
3963         return 0;
3964     }
3965
3966     if (type_in == 'g' || type_out == 'g')
3967         o->metadata_global_manual = 1;
3968     if (type_in == 's' || type_out == 's')
3969         o->metadata_streams_manual = 1;
3970     if (type_in == 'c' || type_out == 'c')
3971         o->metadata_chapters_manual = 1;
3972
3973 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3974     if ((index) < 0 || (index) >= (nb_elems)) {\
3975         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3976                 (desc), (index));\
3977         exit_program(1);\
3978     }
3979
3980 #define SET_DICT(type, meta, context, index)\
3981         switch (type) {\
3982         case 'g':\
3983             meta = &context->metadata;\
3984             break;\
3985         case 'c':\
3986             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3987             meta = &context->chapters[index]->metadata;\
3988             break;\
3989         case 'p':\
3990             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3991             meta = &context->programs[index]->metadata;\
3992             break;\
3993         }\
3994
3995     SET_DICT(type_in, meta_in, ic, idx_in);
3996     SET_DICT(type_out, meta_out, oc, idx_out);
3997
3998     /* for input streams choose first matching stream */
3999     if (type_in == 's') {
4000         for (i = 0; i < ic->nb_streams; i++) {
4001             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
4002                 meta_in = &ic->streams[i]->metadata;
4003                 break;
4004             } else if (ret < 0)
4005                 exit_program(1);
4006         }
4007         if (!meta_in) {
4008             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
4009             exit_program(1);
4010         }
4011     }
4012
4013     if (type_out == 's') {
4014         for (i = 0; i < oc->nb_streams; i++) {
4015             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
4016                 meta_out = &oc->streams[i]->metadata;
4017                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4018             } else if (ret < 0)
4019                 exit_program(1);
4020         }
4021     } else
4022         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4023
4024     return 0;
4025 }
4026
4027 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
4028 {
4029     char buf[128];
4030     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
4031     struct tm time = *gmtime((time_t*)&recording_timestamp);
4032     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
4033     parse_option(o, "metadata", buf, options);
4034
4035     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
4036                                  "tag instead.\n", opt);
4037     return 0;
4038 }
4039
4040 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4041 {
4042     const char *codec_string = encoder ? "encoder" : "decoder";
4043     AVCodec *codec;
4044
4045     codec = encoder ?
4046         avcodec_find_encoder_by_name(name) :
4047         avcodec_find_decoder_by_name(name);
4048     if (!codec) {
4049         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4050         exit_program(1);
4051     }
4052     if (codec->type != type) {
4053         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4054         exit_program(1);
4055     }
4056     return codec;
4057 }
4058
4059 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4060 {
4061     char *codec_name = NULL;
4062
4063     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4064     if (codec_name) {
4065         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4066         st->codec->codec_id = codec->id;
4067         return codec;
4068     } else
4069         return avcodec_find_decoder(st->codec->codec_id);
4070 }
4071
4072 /**
4073  * Add all the streams from the given input file to the global
4074  * list of input streams.
4075  */
4076 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4077 {
4078     int i;
4079     char *next, *codec_tag = NULL;
4080
4081     for (i = 0; i < ic->nb_streams; i++) {
4082         AVStream *st = ic->streams[i];
4083         AVCodecContext *dec = st->codec;
4084         InputStream *ist = av_mallocz(sizeof(*ist));
4085         char *framerate = NULL;
4086
4087         if (!ist)
4088             exit_program(1);
4089
4090         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4091         input_streams[nb_input_streams - 1] = ist;
4092
4093         ist->st = st;
4094         ist->file_index = nb_input_files;
4095         ist->discard = 1;
4096         st->discard  = AVDISCARD_ALL;
4097         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4098
4099         ist->ts_scale = 1.0;
4100         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4101
4102         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4103         if (codec_tag) {
4104             uint32_t tag = strtol(codec_tag, &next, 0);
4105             if (*next)
4106                 tag = AV_RL32(codec_tag);
4107             st->codec->codec_tag = tag;
4108         }
4109
4110         ist->dec = choose_decoder(o, ic, st);
4111
4112         switch (dec->codec_type) {
4113         case AVMEDIA_TYPE_VIDEO:
4114             if(!ist->dec)
4115                 ist->dec = avcodec_find_decoder(dec->codec_id);
4116             if (dec->lowres) {
4117                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4118             }
4119
4120             ist->resample_height  = dec->height;
4121             ist->resample_width   = dec->width;
4122             ist->resample_pix_fmt = dec->pix_fmt;
4123
4124             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
4125             if (framerate && av_parse_video_rate(&ist->framerate,
4126                                                  framerate) < 0) {
4127                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
4128                        framerate);
4129                 exit_program(1);
4130             }
4131
4132             ist->top_field_first = -1;
4133             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
4134
4135             break;
4136         case AVMEDIA_TYPE_AUDIO:
4137             guess_input_channel_layout(ist);
4138
4139             ist->resample_sample_fmt     = dec->sample_fmt;
4140             ist->resample_sample_rate    = dec->sample_rate;
4141             ist->resample_channels       = dec->channels;
4142             ist->resample_channel_layout = dec->channel_layout;
4143
4144             break;
4145         case AVMEDIA_TYPE_DATA:
4146         case AVMEDIA_TYPE_SUBTITLE:
4147             if(!ist->dec)
4148                 ist->dec = avcodec_find_decoder(dec->codec_id);
4149             break;
4150         case AVMEDIA_TYPE_ATTACHMENT:
4151         case AVMEDIA_TYPE_UNKNOWN:
4152             break;
4153         default:
4154             abort();
4155         }
4156     }
4157 }
4158
4159 static void assert_file_overwrite(const char *filename)
4160 {
4161     if ((!file_overwrite || no_file_overwrite) &&
4162         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4163          av_strstart(filename, "file:", NULL))) {
4164         if (avio_check(filename, 0) == 0) {
4165             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4166                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4167                 fflush(stderr);
4168                 term_exit();
4169                 signal(SIGINT, SIG_DFL);
4170                 if (!read_yesno()) {
4171                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4172                     exit_program(1);
4173                 }
4174                 term_init();
4175             }
4176             else {
4177                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4178                 exit_program(1);
4179             }
4180         }
4181     }
4182 }
4183
4184 static void dump_attachment(AVStream *st, const char *filename)
4185 {
4186     int ret;
4187     AVIOContext *out = NULL;
4188     AVDictionaryEntry *e;
4189
4190     if (!st->codec->extradata_size) {
4191         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4192                nb_input_files - 1, st->index);
4193         return;
4194     }
4195     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4196         filename = e->value;
4197     if (!*filename) {
4198         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4199                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4200         exit_program(1);
4201     }
4202
4203     assert_file_overwrite(filename);
4204
4205     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4206         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4207                filename);
4208         exit_program(1);
4209     }
4210
4211     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4212     avio_flush(out);
4213     avio_close(out);
4214 }
4215
4216 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4217 {
4218     AVFormatContext *ic;
4219     AVInputFormat *file_iformat = NULL;
4220     int err, i, ret;
4221     int64_t timestamp;
4222     uint8_t buf[128];
4223     AVDictionary **opts;
4224     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4225
4226     if (o->format) {
4227         if (!(file_iformat = av_find_input_format(o->format))) {
4228             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4229             exit_program(1);
4230         }
4231     }
4232
4233     if (!strcmp(filename, "-"))
4234         filename = "pipe:";
4235
4236     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4237                     !strcmp(filename, "/dev/stdin");
4238
4239     /* get default parameters from command line */
4240     ic = avformat_alloc_context();
4241     if (!ic) {
4242         print_error(filename, AVERROR(ENOMEM));
4243         exit_program(1);
4244     }
4245     if (o->nb_audio_sample_rate) {
4246         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4247         av_dict_set(&format_opts, "sample_rate", buf, 0);
4248     }
4249     if (o->nb_audio_channels) {
4250         /* because we set audio_channels based on both the "ac" and
4251          * "channel_layout" options, we need to check that the specified
4252          * demuxer actually has the "channels" option before setting it */
4253         if (file_iformat && file_iformat->priv_class &&
4254             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4255                         AV_OPT_SEARCH_FAKE_OBJ)) {
4256             snprintf(buf, sizeof(buf), "%d",
4257                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4258             av_dict_set(&format_opts, "channels", buf, 0);
4259         }
4260     }
4261     if (o->nb_frame_rates) {
4262         /* set the format-level framerate option;
4263          * this is important for video grabbers, e.g. x11 */
4264         if (file_iformat && file_iformat->priv_class &&
4265             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4266                         AV_OPT_SEARCH_FAKE_OBJ)) {
4267             av_dict_set(&format_opts, "framerate",
4268                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4269         }
4270     }
4271     if (o->nb_frame_sizes) {
4272         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4273     }
4274     if (o->nb_frame_pix_fmts)
4275         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4276
4277     ic->video_codec_id   = video_codec_name ?
4278         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4279     ic->audio_codec_id   = audio_codec_name ?
4280         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4281     ic->subtitle_codec_id= subtitle_codec_name ?
4282         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4283     ic->flags |= AVFMT_FLAG_NONBLOCK;
4284     ic->interrupt_callback = int_cb;
4285
4286