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