ffmpeg: fix fate breakage introduced by key=value buffersrc args.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88 #include <time.h>
89
90 #include "cmdutils.h"
91
92 #include "libavutil/avassert.h"
93
94 #define VSYNC_AUTO       -1
95 #define VSYNC_PASSTHROUGH 0
96 #define VSYNC_CFR         1
97 #define VSYNC_VFR         2
98 #define VSYNC_DROP        0xff
99
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179     uint8_t            *name;
180 } InputFilter;
181
182 typedef struct OutputFilter {
183     AVFilterContext     *filter;
184     struct OutputStream *ost;
185     struct FilterGraph  *graph;
186     uint8_t             *name;
187
188     /* temporary storage until stream maps are processed */
189     AVFilterInOut       *out_tmp;
190 } OutputFilter;
191
192 typedef struct FilterGraph {
193     int            index;
194     const char    *graph_desc;
195
196     AVFilterGraph *graph;
197
198     InputFilter   **inputs;
199     int          nb_inputs;
200     OutputFilter **outputs;
201     int         nb_outputs;
202 } FilterGraph;
203
204 typedef struct InputStream {
205     int file_index;
206     AVStream *st;
207     int discard;             /* true if stream data should be discarded */
208     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
209     AVCodec *dec;
210     AVFrame *decoded_frame;
211
212     int64_t       start;     /* time when read started */
213     /* predicted dts of the next packet read for this stream or (when there are
214      * several frames in a packet) of the next frame in current packet */
215     int64_t       next_dts;
216     /* dts of the last packet read for this stream */
217     int64_t       dts;
218
219     int64_t       next_pts;  /* synthetic pts for the next decode frame */
220     int64_t       pts;       /* current pts of the decoded frame */
221     double ts_scale;
222     int is_start;            /* is 1 at the start and after a discontinuity */
223     int saw_first_ts;
224     int showed_multi_packet_warning;
225     AVDictionary *opts;
226     AVRational framerate;               /* framerate forced with -r */
227     int top_field_first;
228
229     int resample_height;
230     int resample_width;
231     int resample_pix_fmt;
232
233     int      resample_sample_fmt;
234     int      resample_sample_rate;
235     int      resample_channels;
236     uint64_t resample_channel_layout;
237
238     /* a pool of free buffers for decoded data */
239     FrameBuffer *buffer_pool;
240     int dr1;
241
242     /* decoded data from this stream goes into all those filters
243      * currently video and audio only */
244     InputFilter **filters;
245     int        nb_filters;
246 } InputStream;
247
248 typedef struct InputFile {
249     AVFormatContext *ctx;
250     int eof_reached;      /* true if eof reached */
251     int ist_index;        /* index of first stream in input_streams */
252     int buffer_size;      /* current total buffer size */
253     int64_t ts_offset;
254     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
255                              from ctx.nb_streams if new streams appear during av_read_frame() */
256     int rate_emu;
257 } InputFile;
258
259 typedef struct OutputStream {
260     int file_index;          /* file index */
261     int index;               /* stream index in the output file */
262     int source_index;        /* InputStream index */
263     AVStream *st;            /* stream in the output file */
264     int encoding_needed;     /* true if encoding needed for this stream */
265     int frame_number;
266     /* input pts and corresponding output pts
267        for A/V sync */
268     struct InputStream *sync_ist; /* input stream to sync against */
269     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
270     /* pts of the first frame encoded for this stream, used for limiting
271      * recording time */
272     int64_t first_pts;
273     AVBitStreamFilterContext *bitstream_filters;
274     AVCodec *enc;
275     int64_t max_frames;
276     AVFrame *filtered_frame;
277
278     /* video only */
279     AVRational frame_rate;
280     int force_fps;
281     int top_field_first;
282
283     float frame_aspect_ratio;
284     float last_quality;
285
286     /* forced key frames */
287     int64_t *forced_kf_pts;
288     int forced_kf_count;
289     int forced_kf_index;
290
291     /* audio only */
292     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
293     int audio_channels_mapped;           /* number of channels in audio_channels_map */
294
295     FILE *logfile;
296
297     OutputFilter *filter;
298     char *avfilter;
299
300     int64_t sws_flags;
301     int64_t swr_dither_method;
302     double swr_dither_scale;
303     AVDictionary *opts;
304     int is_past_recording_time;
305     int stream_copy;
306     const char *attachment_filename;
307     int copy_initial_nonkeyframes;
308
309     int keep_pix_fmt;
310 } OutputStream;
311
312
313 #if HAVE_TERMIOS_H
314
315 /* init terminal so that we can grab keys */
316 static struct termios oldtty;
317 static int restore_tty;
318 #endif
319
320 typedef struct OutputFile {
321     AVFormatContext *ctx;
322     AVDictionary *opts;
323     int ost_index;       /* index of the first stream in output_streams */
324     int64_t recording_time; /* desired length of the resulting file in microseconds */
325     int64_t start_time;     /* start time in microseconds */
326     uint64_t limit_filesize; /* filesize limit expressed in bytes */
327 } OutputFile;
328
329 static InputStream **input_streams = NULL;
330 static int        nb_input_streams = 0;
331 static InputFile   **input_files   = NULL;
332 static int        nb_input_files   = 0;
333
334 static OutputStream **output_streams = NULL;
335 static int         nb_output_streams = 0;
336 static OutputFile   **output_files   = NULL;
337 static int         nb_output_files   = 0;
338
339 static FilterGraph **filtergraphs;
340 int               nb_filtergraphs;
341
342 typedef struct OptionsContext {
343     /* input/output options */
344     int64_t start_time;
345     const char *format;
346
347     SpecifierOpt *codec_names;
348     int        nb_codec_names;
349     SpecifierOpt *audio_channels;
350     int        nb_audio_channels;
351     SpecifierOpt *audio_sample_rate;
352     int        nb_audio_sample_rate;
353     SpecifierOpt *frame_rates;
354     int        nb_frame_rates;
355     SpecifierOpt *frame_sizes;
356     int        nb_frame_sizes;
357     SpecifierOpt *frame_pix_fmts;
358     int        nb_frame_pix_fmts;
359
360     /* input options */
361     int64_t input_ts_offset;
362     int rate_emu;
363
364     SpecifierOpt *ts_scale;
365     int        nb_ts_scale;
366     SpecifierOpt *dump_attachment;
367     int        nb_dump_attachment;
368
369     /* output options */
370     StreamMap *stream_maps;
371     int     nb_stream_maps;
372     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
373     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
374     int metadata_global_manual;
375     int metadata_streams_manual;
376     int metadata_chapters_manual;
377     const char **attachments;
378     int       nb_attachments;
379
380     int chapters_input_file;
381
382     int64_t recording_time;
383     uint64_t limit_filesize;
384     float mux_preload;
385     float mux_max_delay;
386
387     int video_disable;
388     int audio_disable;
389     int subtitle_disable;
390     int data_disable;
391
392     /* indexed by output file stream index */
393     int   *streamid_map;
394     int nb_streamid_map;
395
396     SpecifierOpt *metadata;
397     int        nb_metadata;
398     SpecifierOpt *max_frames;
399     int        nb_max_frames;
400     SpecifierOpt *bitstream_filters;
401     int        nb_bitstream_filters;
402     SpecifierOpt *codec_tags;
403     int        nb_codec_tags;
404     SpecifierOpt *sample_fmts;
405     int        nb_sample_fmts;
406     SpecifierOpt *qscale;
407     int        nb_qscale;
408     SpecifierOpt *forced_key_frames;
409     int        nb_forced_key_frames;
410     SpecifierOpt *force_fps;
411     int        nb_force_fps;
412     SpecifierOpt *frame_aspect_ratios;
413     int        nb_frame_aspect_ratios;
414     SpecifierOpt *rc_overrides;
415     int        nb_rc_overrides;
416     SpecifierOpt *intra_matrices;
417     int        nb_intra_matrices;
418     SpecifierOpt *inter_matrices;
419     int        nb_inter_matrices;
420     SpecifierOpt *top_field_first;
421     int        nb_top_field_first;
422     SpecifierOpt *metadata_map;
423     int        nb_metadata_map;
424     SpecifierOpt *presets;
425     int        nb_presets;
426     SpecifierOpt *copy_initial_nonkeyframes;
427     int        nb_copy_initial_nonkeyframes;
428     SpecifierOpt *filters;
429     int        nb_filters;
430 } OptionsContext;
431
432 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
433
434 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
435 {\
436     int i, ret;\
437     for (i = 0; i < o->nb_ ## name; i++) {\
438         char *spec = o->name[i].specifier;\
439         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
440             outvar = o->name[i].u.type;\
441         else if (ret < 0)\
442             exit_program(1);\
443     }\
444 }
445
446 static int64_t getutime(void)
447 {
448 #if HAVE_GETRUSAGE
449     struct rusage rusage;
450
451     getrusage(RUSAGE_SELF, &rusage);
452     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
453 #elif HAVE_GETPROCESSTIMES
454     HANDLE proc;
455     FILETIME c, e, k, u;
456     proc = GetCurrentProcess();
457     GetProcessTimes(proc, &c, &e, &k, &u);
458     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
459 #else
460     return av_gettime();
461 #endif
462 }
463
464 static void update_benchmark(const char *fmt, ...)
465 {
466     if (do_benchmark_all) {
467         int64_t t = getutime();
468         va_list va;
469         char buf[1024];
470
471         if (fmt) {
472             va_start(va, fmt);
473             vsnprintf(buf, sizeof(buf), fmt, va);
474             va_end(va);
475             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
476         }
477         current_time = t;
478     }
479 }
480
481 static void reset_options(OptionsContext *o, int is_input)
482 {
483     const OptionDef *po = options;
484     OptionsContext bak= *o;
485     int i;
486
487     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
488     while (po->name) {
489         void *dst = (uint8_t*)o + po->u.off;
490
491         if (po->flags & OPT_SPEC) {
492             SpecifierOpt **so = dst;
493             int i, *count = (int*)(so + 1);
494             for (i = 0; i < *count; i++) {
495                 av_freep(&(*so)[i].specifier);
496                 if (po->flags & OPT_STRING)
497                     av_freep(&(*so)[i].u.str);
498             }
499             av_freep(so);
500             *count = 0;
501         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
502             av_freep(dst);
503         po++;
504     }
505
506     for (i = 0; i < o->nb_stream_maps; i++)
507         av_freep(&o->stream_maps[i].linklabel);
508     av_freep(&o->stream_maps);
509     av_freep(&o->audio_channel_maps);
510     av_freep(&o->streamid_map);
511
512     memset(o, 0, sizeof(*o));
513
514     if(is_input) o->recording_time = bak.recording_time;
515     else         o->recording_time = INT64_MAX;
516     o->mux_max_delay  = 0.7;
517     o->limit_filesize = UINT64_MAX;
518     o->chapters_input_file = INT_MAX;
519
520     uninit_opts();
521     init_opts();
522 }
523
524 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
525 {
526     if (codec && codec->pix_fmts) {
527         const enum PixelFormat *p = codec->pix_fmts;
528         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
529         enum PixelFormat best= PIX_FMT_NONE;
530         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
531             if (st->codec->codec_id == CODEC_ID_MJPEG) {
532                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
533             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
534                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
535                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
536             }
537         }
538         for (; *p != PIX_FMT_NONE; p++) {
539             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
540             if (*p == target)
541                 break;
542         }
543         if (*p == PIX_FMT_NONE) {
544             if (target != PIX_FMT_NONE)
545                 av_log(NULL, AV_LOG_WARNING,
546                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
547                        av_pix_fmt_descriptors[target].name,
548                        codec->name,
549                        av_pix_fmt_descriptors[best].name);
550             return best;
551         }
552     }
553     return target;
554 }
555
556 static char *choose_pix_fmts(OutputStream *ost)
557 {
558      if (ost->keep_pix_fmt) {
559         if (ost->filter)
560             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
561                                             AVFILTER_AUTO_CONVERT_NONE);
562         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
563             return NULL;
564         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
565     }
566     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
567         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
568     } else if (ost->enc && ost->enc->pix_fmts) {
569         const enum PixelFormat *p;
570         AVIOContext *s = NULL;
571         uint8_t *ret;
572         int len;
573
574         if (avio_open_dyn_buf(&s) < 0)
575             exit_program(1);
576
577         p = ost->enc->pix_fmts;
578         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
579             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
580                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
581             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
582                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
583                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
584             }
585         }
586
587         for (; *p != PIX_FMT_NONE; p++) {
588             const char *name = av_get_pix_fmt_name(*p);
589             avio_printf(s, "%s:", name);
590         }
591         len = avio_close_dyn_buf(s, &ret);
592         ret[len - 1] = 0;
593         return ret;
594     } else
595         return NULL;
596 }
597
598 /**
599  * Define a function for building a string containing a list of
600  * allowed formats,
601  */
602 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
603 static char *choose_ ## var ## s(OutputStream *ost)                             \
604 {                                                                               \
605     if (ost->st->codec->var != none) {                                          \
606         get_name(ost->st->codec->var);                                          \
607         return av_strdup(name);                                                 \
608     } else if (ost->enc->supported_list) {                                      \
609         const type *p;                                                          \
610         AVIOContext *s = NULL;                                                  \
611         uint8_t *ret;                                                           \
612         int len;                                                                \
613                                                                                 \
614         if (avio_open_dyn_buf(&s) < 0)                                          \
615             exit_program(1);                                                    \
616                                                                                 \
617         for (p = ost->enc->supported_list; *p != none; p++) {                   \
618             get_name(*p);                                                       \
619             avio_printf(s, "%s" separator, name);                               \
620         }                                                                       \
621         len = avio_close_dyn_buf(s, &ret);                                      \
622         ret[len - 1] = 0;                                                       \
623         return ret;                                                             \
624     } else                                                                      \
625         return NULL;                                                            \
626 }
627
628 #define GET_PIX_FMT_NAME(pix_fmt)\
629     const char *name = av_get_pix_fmt_name(pix_fmt);
630
631 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
632 //                   GET_PIX_FMT_NAME, ":")
633
634 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
635     const char *name = av_get_sample_fmt_name(sample_fmt)
636
637 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
638                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
639
640 #define GET_SAMPLE_RATE_NAME(rate)\
641     char name[16];\
642     snprintf(name, sizeof(name), "%d", rate);
643
644 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
645                   GET_SAMPLE_RATE_NAME, ",")
646
647 #define GET_CH_LAYOUT_NAME(ch_layout)\
648     char name[16];\
649     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
650
651 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
652                   GET_CH_LAYOUT_NAME, ",")
653
654 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
655 {
656     FilterGraph *fg = av_mallocz(sizeof(*fg));
657
658     if (!fg)
659         exit_program(1);
660     fg->index = nb_filtergraphs;
661
662     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
663                              fg->nb_outputs + 1);
664     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
665         exit_program(1);
666     fg->outputs[0]->ost   = ost;
667     fg->outputs[0]->graph = fg;
668
669     ost->filter = fg->outputs[0];
670
671     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
672                             fg->nb_inputs + 1);
673     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
674         exit_program(1);
675     fg->inputs[0]->ist   = ist;
676     fg->inputs[0]->graph = fg;
677
678     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
679                               &ist->nb_filters, ist->nb_filters + 1);
680     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
681
682     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
683                               &nb_filtergraphs, nb_filtergraphs + 1);
684     filtergraphs[nb_filtergraphs - 1] = fg;
685
686     return fg;
687 }
688
689 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
690 {
691     InputStream *ist = NULL;
692     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
693     int i;
694
695     // TODO: support other filter types
696     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
697         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
698                "currently.\n");
699         exit_program(1);
700     }
701
702     if (in->name) {
703         AVFormatContext *s;
704         AVStream       *st = NULL;
705         char *p;
706         int file_idx = strtol(in->name, &p, 0);
707
708         if (file_idx < 0 || file_idx >= nb_input_files) {
709             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
710                    file_idx, fg->graph_desc);
711             exit_program(1);
712         }
713         s = input_files[file_idx]->ctx;
714
715         for (i = 0; i < s->nb_streams; i++) {
716             if (s->streams[i]->codec->codec_type != type)
717                 continue;
718             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
719                 st = s->streams[i];
720                 break;
721             }
722         }
723         if (!st) {
724             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
725                    "matches no streams.\n", p, fg->graph_desc);
726             exit_program(1);
727         }
728         ist = input_streams[input_files[file_idx]->ist_index + st->index];
729     } else {
730         /* find the first unused stream of corresponding type */
731         for (i = 0; i < nb_input_streams; i++) {
732             ist = input_streams[i];
733             if (ist->st->codec->codec_type == type && ist->discard)
734                 break;
735         }
736         if (i == nb_input_streams) {
737             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
738                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
739                    in->filter_ctx->name);
740             exit_program(1);
741         }
742     }
743     ist->discard         = 0;
744     ist->decoding_needed = 1;
745     ist->st->discard = AVDISCARD_NONE;
746
747     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
748                             &fg->nb_inputs, fg->nb_inputs + 1);
749     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
750         exit_program(1);
751     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
752     fg->inputs[fg->nb_inputs - 1]->graph = fg;
753
754     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
755                               &ist->nb_filters, ist->nb_filters + 1);
756     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
757 }
758
759 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
760 {
761     char *pix_fmts;
762     OutputStream *ost = ofilter->ost;
763     AVCodecContext *codec = ost->st->codec;
764     AVFilterContext *last_filter = out->filter_ctx;
765     int pad_idx = out->pad_idx;
766     int ret;
767     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
768
769 #if FF_API_OLD_VSINK_API
770     ret = avfilter_graph_create_filter(&ofilter->filter,
771                                        avfilter_get_by_name("buffersink"),
772                                        "ffmpeg_buffersink", NULL, NULL, fg->graph);
773 #else
774     ret = avfilter_graph_create_filter(&ofilter->filter,
775                                        avfilter_get_by_name("buffersink"),
776                                        "ffmpeg_buffersink", NULL, buffersink_params, fg->graph);
777 #endif
778     av_freep(&buffersink_params);
779
780     if (ret < 0)
781         return ret;
782
783     if (codec->width || codec->height) {
784         char args[255];
785         AVFilterContext *filter;
786
787         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
788                  codec->width,
789                  codec->height,
790                  (unsigned)ost->sws_flags);
791         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
792                                                 NULL, args, NULL, fg->graph)) < 0)
793             return ret;
794         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
795             return ret;
796
797         last_filter = filter;
798         pad_idx = 0;
799     }
800
801     if ((pix_fmts = choose_pix_fmts(ost))) {
802         AVFilterContext *filter;
803         if ((ret = avfilter_graph_create_filter(&filter,
804                                                 avfilter_get_by_name("format"),
805                                                 "format", pix_fmts, NULL,
806                                                 fg->graph)) < 0)
807             return ret;
808         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
809             return ret;
810
811         last_filter = filter;
812         pad_idx     = 0;
813         av_freep(&pix_fmts);
814     }
815
816     if (ost->frame_rate.num && 0) {
817         AVFilterContext *fps;
818         char args[255];
819
820         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
821                  ost->frame_rate.den);
822         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
823                                            "fps", args, NULL, fg->graph);
824         if (ret < 0)
825             return ret;
826
827         ret = avfilter_link(last_filter, pad_idx, fps, 0);
828         if (ret < 0)
829             return ret;
830         last_filter = fps;
831         pad_idx = 0;
832     }
833
834     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
835         return ret;
836
837     return 0;
838 }
839
840 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
841 {
842     OutputStream *ost = ofilter->ost;
843     AVCodecContext *codec  = ost->st->codec;
844     AVFilterContext *last_filter = out->filter_ctx;
845     int pad_idx = out->pad_idx;
846     char *sample_fmts, *sample_rates, *channel_layouts;
847     int ret;
848
849     ret = avfilter_graph_create_filter(&ofilter->filter,
850                                        avfilter_get_by_name("abuffersink_old"),
851                                        "ffmpeg_abuffersink_old", NULL, NULL, fg->graph);
852     if (ret < 0)
853         return ret;
854
855 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
856     AVFilterContext *filt_ctx;                                              \
857                                                                             \
858     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
859            "similarly to -af " filter_name "=%s.\n", arg);                  \
860                                                                             \
861     ret = avfilter_graph_create_filter(&filt_ctx,                           \
862                                        avfilter_get_by_name(filter_name),   \
863                                        filter_name, arg, NULL, fg->graph);  \
864     if (ret < 0)                                                            \
865         return ret;                                                         \
866                                                                             \
867     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
868     if (ret < 0)                                                            \
869         return ret;                                                         \
870                                                                             \
871     last_filter = filt_ctx;                                                 \
872     pad_idx = 0;                                                            \
873 } while (0)
874     if (ost->audio_channels_mapped) {
875         int i;
876         AVBPrint pan_buf;
877         av_bprint_init(&pan_buf, 256, 8192);
878         av_bprintf(&pan_buf, "0x%"PRIx64,
879                    av_get_default_channel_layout(ost->audio_channels_mapped));
880         for (i = 0; i < ost->audio_channels_mapped; i++)
881             if (ost->audio_channels_map[i] != -1)
882                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
883
884         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
885         av_bprint_finalize(&pan_buf, NULL);
886     }
887
888     if (codec->channels && !codec->channel_layout)
889         codec->channel_layout = av_get_default_channel_layout(codec->channels);
890
891     sample_fmts     = choose_sample_fmts(ost);
892     sample_rates    = choose_sample_rates(ost);
893     channel_layouts = choose_channel_layouts(ost);
894     if (sample_fmts || sample_rates || channel_layouts) {
895         AVFilterContext *format;
896         char args[256];
897         int len = 0;
898
899         if (sample_fmts)
900             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
901                             sample_fmts);
902         if (sample_rates)
903             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
904                             sample_rates);
905         if (channel_layouts)
906             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
907                             channel_layouts);
908         args[len - 1] = 0;
909
910         av_freep(&sample_fmts);
911         av_freep(&sample_rates);
912         av_freep(&channel_layouts);
913
914         ret = avfilter_graph_create_filter(&format,
915                                            avfilter_get_by_name("aformat"),
916                                            "aformat", args, NULL, fg->graph);
917         if (ret < 0)
918             return ret;
919
920         ret = avfilter_link(last_filter, pad_idx, format, 0);
921         if (ret < 0)
922             return ret;
923
924         last_filter = format;
925         pad_idx = 0;
926     }
927
928     if (audio_sync_method > 0 && 0) {
929         char args[256] = {0};
930
931         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
932         if (audio_sync_method > 1)
933             av_strlcatf(args, sizeof(args), ":max_soft_comp=%d", -audio_sync_method);
934         AUTO_INSERT_FILTER("-async", "aresample", args);
935     }
936
937     if (audio_volume != 256 && 0) {
938         char args[256];
939
940         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
941         AUTO_INSERT_FILTER("-vol", "volume", args);
942     }
943
944     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
945         return ret;
946
947     return 0;
948 }
949
950 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
951 {                                                                  \
952     AVFilterContext *ctx = inout->filter_ctx;                      \
953     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
954     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
955     AVIOContext *pb;                                               \
956                                                                    \
957     if (avio_open_dyn_buf(&pb) < 0)                                \
958         exit_program(1);                                           \
959                                                                    \
960     avio_printf(pb, "%s", ctx->filter->name);                      \
961     if (nb_pads > 1)                                               \
962         avio_printf(pb, ":%s", pads[inout->pad_idx].name);         \
963     avio_w8(pb, 0);                                                \
964     avio_close_dyn_buf(pb, &f->name);                              \
965 }
966
967 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
968 {
969     av_freep(&ofilter->name);
970     DESCRIBE_FILTER_LINK(ofilter, out, 0);
971
972     switch (out->filter_ctx->output_pads[out->pad_idx].type) {
973     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
974     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
975     default: av_assert0(0);
976     }
977 }
978
979 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
980                                         AVFilterInOut *in)
981 {
982     AVFilterContext *first_filter = in->filter_ctx;
983     AVFilter *filter = avfilter_get_by_name("buffer");
984     InputStream *ist = ifilter->ist;
985     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
986                                                       ist->framerate.num} :
987                                          ist->st->time_base;
988     AVRational fr = ist->framerate.num ? ist->framerate :
989                                          ist->st->r_frame_rate;
990     AVRational sar;
991     AVBPrint args;
992     int pad_idx = in->pad_idx;
993     int ret;
994
995     sar = ist->st->sample_aspect_ratio.num ?
996           ist->st->sample_aspect_ratio :
997           ist->st->codec->sample_aspect_ratio;
998     if(!sar.den)
999         sar = (AVRational){0,1};
1000     av_bprint_init(&args, 0, 1);
1001     av_bprintf(&args,
1002              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1003              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1004              ist->st->codec->height, ist->st->codec->pix_fmt,
1005              tb.num, tb.den, sar.num, sar.den,
1006              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1007     if (fr.num && fr.den)
1008         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1009
1010     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
1011                                             args.str, NULL, fg->graph)) < 0)
1012         return ret;
1013
1014     if (ist->framerate.num) {
1015         AVFilterContext *setpts;
1016
1017         if ((ret = avfilter_graph_create_filter(&setpts,
1018                                                 avfilter_get_by_name("setpts"),
1019                                                 "setpts", "N", NULL,
1020                                                 fg->graph)) < 0)
1021             return ret;
1022
1023         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1024             return ret;
1025
1026         first_filter = setpts;
1027         pad_idx = 0;
1028     }
1029
1030     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1031         return ret;
1032     return 0;
1033 }
1034
1035 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1036                                         AVFilterInOut *in)
1037 {
1038     AVFilterContext *first_filter = in->filter_ctx;
1039     AVFilter *filter = avfilter_get_by_name("abuffer");
1040     InputStream *ist = ifilter->ist;
1041     int pad_idx = in->pad_idx;
1042     char args[255];
1043     int ret;
1044
1045     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1046              ":channel_layout=0x%"PRIx64,
1047              ist->st->time_base.num, ist->st->time_base.den,
1048              ist->st->codec->sample_rate,
1049              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1050              ist->st->codec->channel_layout);
1051
1052     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1053                                             in->name, args, NULL,
1054                                             fg->graph)) < 0)
1055         return ret;
1056
1057 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1058     AVFilterContext *filt_ctx;                                              \
1059                                                                             \
1060     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1061            "similarly to -af " filter_name "=%s.\n", arg);                  \
1062                                                                             \
1063     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1064                                        avfilter_get_by_name(filter_name),   \
1065                                        filter_name, arg, NULL, fg->graph);  \
1066     if (ret < 0)                                                            \
1067         return ret;                                                         \
1068                                                                             \
1069     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1070     if (ret < 0)                                                            \
1071         return ret;                                                         \
1072                                                                             \
1073     first_filter = filt_ctx;                                                  \
1074 } while (0)
1075
1076     if (audio_sync_method > 0) {
1077         char args[256] = {0};
1078
1079         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1080         if (audio_sync_method > 1)
1081             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1082         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1083     }
1084
1085 //     if (ost->audio_channels_mapped) {
1086 //         int i;
1087 //         AVBPrint pan_buf;
1088 //         av_bprint_init(&pan_buf, 256, 8192);
1089 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1090 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1091 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1092 //             if (ost->audio_channels_map[i] != -1)
1093 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1094 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1095 //         av_bprint_finalize(&pan_buf, NULL);
1096 //     }
1097
1098     if (audio_volume != 256) {
1099         char args[256];
1100
1101         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1102         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1103     }
1104     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1105         return ret;
1106
1107     return 0;
1108 }
1109
1110 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1111                                   AVFilterInOut *in)
1112 {
1113     av_freep(&ifilter->name);
1114     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1115
1116     switch (in->filter_ctx->input_pads[in->pad_idx].type) {
1117     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1118     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1119     default: av_assert0(0);
1120     }
1121 }
1122
1123 static int configure_filtergraph(FilterGraph *fg)
1124 {
1125     AVFilterInOut *inputs, *outputs, *cur;
1126     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1127     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1128                                       fg->graph_desc;
1129
1130     avfilter_graph_free(&fg->graph);
1131     if (!(fg->graph = avfilter_graph_alloc()))
1132         return AVERROR(ENOMEM);
1133
1134     if (simple) {
1135         OutputStream *ost = fg->outputs[0]->ost;
1136         char args[255];
1137         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1138         fg->graph->scale_sws_opts = av_strdup(args);
1139     }
1140
1141     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1142         return ret;
1143
1144     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1145         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1146                "exactly one input and output.\n", graph_desc);
1147         return AVERROR(EINVAL);
1148     }
1149
1150     for (cur = inputs; !simple && init && cur; cur = cur->next)
1151         init_input_filter(fg, cur);
1152
1153     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1154         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1155             return ret;
1156     avfilter_inout_free(&inputs);
1157
1158     if (!init || simple) {
1159         /* we already know the mappings between lavfi outputs and output streams,
1160          * so we can finish the setup */
1161         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1162             configure_output_filter(fg, fg->outputs[i], cur);
1163         avfilter_inout_free(&outputs);
1164
1165         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1166             return ret;
1167     } else {
1168         /* wait until output mappings are processed */
1169         for (cur = outputs; cur;) {
1170             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1171                                      &fg->nb_outputs, fg->nb_outputs + 1);
1172             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1173                 exit_program(1);
1174             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1175             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1176             cur = cur->next;
1177             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1178         }
1179     }
1180
1181     return 0;
1182 }
1183
1184 static int configure_complex_filters(void)
1185 {
1186     int i, ret = 0;
1187
1188     for (i = 0; i < nb_filtergraphs; i++)
1189         if (!filtergraphs[i]->graph &&
1190             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1191             return ret;
1192     return 0;
1193 }
1194
1195 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1196 {
1197     int i;
1198     for (i = 0; i < fg->nb_inputs; i++)
1199         if (fg->inputs[i]->ist == ist)
1200             return 1;
1201     return 0;
1202 }
1203
1204 static void term_exit(void)
1205 {
1206     av_log(NULL, AV_LOG_QUIET, "%s", "");
1207 #if HAVE_TERMIOS_H
1208     if(restore_tty)
1209         tcsetattr (0, TCSANOW, &oldtty);
1210 #endif
1211 }
1212
1213 static volatile int received_sigterm = 0;
1214
1215 static void sigterm_handler(int sig)
1216 {
1217     received_sigterm = sig;
1218     received_nb_signals++;
1219     term_exit();
1220     if(received_nb_signals > 3)
1221         exit(123);
1222 }
1223
1224 static void term_init(void)
1225 {
1226 #if HAVE_TERMIOS_H
1227     if(!run_as_daemon){
1228         struct termios tty;
1229         int istty = 1;
1230 #if HAVE_ISATTY
1231         istty = isatty(0) && isatty(2);
1232 #endif
1233         if (istty && tcgetattr (0, &tty) == 0) {
1234             oldtty = tty;
1235             restore_tty = 1;
1236             atexit(term_exit);
1237
1238             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1239                              |INLCR|IGNCR|ICRNL|IXON);
1240             tty.c_oflag |= OPOST;
1241             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1242             tty.c_cflag &= ~(CSIZE|PARENB);
1243             tty.c_cflag |= CS8;
1244             tty.c_cc[VMIN] = 1;
1245             tty.c_cc[VTIME] = 0;
1246
1247             tcsetattr (0, TCSANOW, &tty);
1248         }
1249         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1250     }
1251 #endif
1252     avformat_network_deinit();
1253
1254     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1255     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1256 #ifdef SIGXCPU
1257     signal(SIGXCPU, sigterm_handler);
1258 #endif
1259 }
1260
1261 /* read a key without blocking */
1262 static int read_key(void)
1263 {
1264     unsigned char ch;
1265 #if HAVE_TERMIOS_H
1266     int n = 1;
1267     struct timeval tv;
1268     fd_set rfds;
1269
1270     FD_ZERO(&rfds);
1271     FD_SET(0, &rfds);
1272     tv.tv_sec = 0;
1273     tv.tv_usec = 0;
1274     n = select(1, &rfds, NULL, NULL, &tv);
1275     if (n > 0) {
1276         n = read(0, &ch, 1);
1277         if (n == 1)
1278             return ch;
1279
1280         return n;
1281     }
1282 #elif HAVE_KBHIT
1283 #    if HAVE_PEEKNAMEDPIPE
1284     static int is_pipe;
1285     static HANDLE input_handle;
1286     DWORD dw, nchars;
1287     if(!input_handle){
1288         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1289         is_pipe = !GetConsoleMode(input_handle, &dw);
1290     }
1291
1292     if (stdin->_cnt > 0) {
1293         read(0, &ch, 1);
1294         return ch;
1295     }
1296     if (is_pipe) {
1297         /* When running under a GUI, you will end here. */
1298         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1299             return -1;
1300         //Read it
1301         if(nchars != 0) {
1302             read(0, &ch, 1);
1303             return ch;
1304         }else{
1305             return -1;
1306         }
1307     }
1308 #    endif
1309     if(kbhit())
1310         return(getch());
1311 #endif
1312     return -1;
1313 }
1314
1315 static int decode_interrupt_cb(void *ctx)
1316 {
1317     return received_nb_signals > 1;
1318 }
1319
1320 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1321
1322 void av_noreturn exit_program(int ret)
1323 {
1324     int i, j;
1325
1326     for (i = 0; i < nb_filtergraphs; i++) {
1327         avfilter_graph_free(&filtergraphs[i]->graph);
1328         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1329             av_freep(&filtergraphs[i]->inputs[j]->name);
1330             av_freep(&filtergraphs[i]->inputs[j]);
1331         }
1332         av_freep(&filtergraphs[i]->inputs);
1333         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1334             av_freep(&filtergraphs[i]->outputs[j]->name);
1335             av_freep(&filtergraphs[i]->outputs[j]);
1336         }
1337         av_freep(&filtergraphs[i]->outputs);
1338         av_freep(&filtergraphs[i]);
1339     }
1340     av_freep(&filtergraphs);
1341
1342     /* close files */
1343     for (i = 0; i < nb_output_files; i++) {
1344         AVFormatContext *s = output_files[i]->ctx;
1345         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1346             avio_close(s->pb);
1347         avformat_free_context(s);
1348         av_dict_free(&output_files[i]->opts);
1349         av_freep(&output_files[i]);
1350     }
1351     for (i = 0; i < nb_output_streams; i++) {
1352         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1353         while (bsfc) {
1354             AVBitStreamFilterContext *next = bsfc->next;
1355             av_bitstream_filter_close(bsfc);
1356             bsfc = next;
1357         }
1358         output_streams[i]->bitstream_filters = NULL;
1359
1360         av_freep(&output_streams[i]->filtered_frame);
1361         av_freep(&output_streams[i]->avfilter);
1362         av_freep(&output_streams[i]);
1363     }
1364     for (i = 0; i < nb_input_files; i++) {
1365         avformat_close_input(&input_files[i]->ctx);
1366         av_freep(&input_files[i]);
1367     }
1368     for (i = 0; i < nb_input_streams; i++) {
1369         av_freep(&input_streams[i]->decoded_frame);
1370         av_dict_free(&input_streams[i]->opts);
1371         free_buffer_pool(&input_streams[i]->buffer_pool);
1372         av_freep(&input_streams[i]->filters);
1373         av_freep(&input_streams[i]);
1374     }
1375
1376     if (vstats_file)
1377         fclose(vstats_file);
1378     av_free(vstats_filename);
1379
1380     av_freep(&input_streams);
1381     av_freep(&input_files);
1382     av_freep(&output_streams);
1383     av_freep(&output_files);
1384
1385     uninit_opts();
1386
1387     avfilter_uninit();
1388     avformat_network_deinit();
1389
1390     if (received_sigterm) {
1391         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1392                (int) received_sigterm);
1393         exit (255);
1394     }
1395
1396     exit(ret);
1397 }
1398
1399 static void assert_avoptions(AVDictionary *m)
1400 {
1401     AVDictionaryEntry *t;
1402     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1403         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1404         exit_program(1);
1405     }
1406 }
1407
1408 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1409 {
1410     const char *codec_string = encoder ? "encoder" : "decoder";
1411     AVCodec *codec;
1412     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1413         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1414         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1415                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1416                 codec_string, c->codec->name);
1417         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1418         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1419             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1420                    codec_string, codec->name);
1421         exit_program(1);
1422     }
1423 }
1424
1425 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1426 {
1427     if (codec && codec->sample_fmts) {
1428         const enum AVSampleFormat *p = codec->sample_fmts;
1429         for (; *p != -1; p++) {
1430             if (*p == st->codec->sample_fmt)
1431                 break;
1432         }
1433         if (*p == -1) {
1434             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1435                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1436             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1437             av_log(NULL, AV_LOG_WARNING,
1438                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1439                    av_get_sample_fmt_name(st->codec->sample_fmt),
1440                    codec->name,
1441                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1442             st->codec->sample_fmt = codec->sample_fmts[0];
1443         }
1444     }
1445 }
1446
1447 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1448 {
1449     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1450     AVCodecContext          *avctx = ost->st->codec;
1451     int ret;
1452
1453     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1454         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1455         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1456
1457     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1458         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1459         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1460             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1461             pkt->pts = pkt->dts = max;
1462         }
1463     }
1464
1465     /*
1466      * Audio encoders may split the packets --  #frames in != #packets out.
1467      * But there is no reordering, so we can limit the number of output packets
1468      * by simply dropping them here.
1469      * Counting encoded video frames needs to be done separately because of
1470      * reordering, see do_video_out()
1471      */
1472     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1473         if (ost->frame_number >= ost->max_frames) {
1474             av_free_packet(pkt);
1475             return;
1476         }
1477         ost->frame_number++;
1478     }
1479
1480     while (bsfc) {
1481         AVPacket new_pkt = *pkt;
1482         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1483                                            &new_pkt.data, &new_pkt.size,
1484                                            pkt->data, pkt->size,
1485                                            pkt->flags & AV_PKT_FLAG_KEY);
1486         if (a > 0) {
1487             av_free_packet(pkt);
1488             new_pkt.destruct = av_destruct_packet;
1489         } else if (a < 0) {
1490             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1491                    bsfc->filter->name, pkt->stream_index,
1492                    avctx->codec ? avctx->codec->name : "copy");
1493             print_error("", a);
1494             if (exit_on_error)
1495                 exit_program(1);
1496         }
1497         *pkt = new_pkt;
1498
1499         bsfc = bsfc->next;
1500     }
1501
1502     pkt->stream_index = ost->index;
1503     ret = av_interleaved_write_frame(s, pkt);
1504     if (ret < 0) {
1505         print_error("av_interleaved_write_frame()", ret);
1506         exit_program(1);
1507     }
1508 }
1509
1510 static int check_recording_time(OutputStream *ost)
1511 {
1512     OutputFile *of = output_files[ost->file_index];
1513
1514     if (of->recording_time != INT64_MAX &&
1515         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1516                       AV_TIME_BASE_Q) >= 0) {
1517         ost->is_past_recording_time = 1;
1518         return 0;
1519     }
1520     return 1;
1521 }
1522
1523 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1524                          AVFrame *frame)
1525 {
1526     AVCodecContext *enc = ost->st->codec;
1527     AVPacket pkt;
1528     int got_packet = 0;
1529
1530     av_init_packet(&pkt);
1531     pkt.data = NULL;
1532     pkt.size = 0;
1533 #if 0
1534     if (!check_recording_time(ost))
1535         return;
1536 #endif
1537     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1538         frame->pts = ost->sync_opts;
1539     ost->sync_opts = frame->pts + frame->nb_samples;
1540
1541     av_assert0(pkt.size || !pkt.data);
1542     update_benchmark(NULL);
1543     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1544         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1545         exit_program(1);
1546     }
1547     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1548
1549     if (got_packet) {
1550         if (pkt.pts != AV_NOPTS_VALUE)
1551             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1552         if (pkt.dts != AV_NOPTS_VALUE)
1553             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1554         if (pkt.duration > 0)
1555             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1556
1557         if (debug_ts) {
1558             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1559                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1560                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1561                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1562         }
1563
1564         write_frame(s, &pkt, ost);
1565
1566         audio_size += pkt.size;
1567         av_free_packet(&pkt);
1568     }
1569 }
1570
1571 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1572 {
1573     AVCodecContext *dec;
1574     AVPicture *picture2;
1575     AVPicture picture_tmp;
1576     uint8_t *buf = 0;
1577
1578     dec = ist->st->codec;
1579
1580     /* deinterlace : must be done before any resize */
1581     if (do_deinterlace) {
1582         int size;
1583
1584         /* create temporary picture */
1585         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1586         buf  = av_malloc(size);
1587         if (!buf)
1588             return;
1589
1590         picture2 = &picture_tmp;
1591         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1592
1593         if (avpicture_deinterlace(picture2, picture,
1594                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1595             /* if error, do not deinterlace */
1596             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1597             av_free(buf);
1598             buf = NULL;
1599             picture2 = picture;
1600         }
1601     } else {
1602         picture2 = picture;
1603     }
1604
1605     if (picture != picture2)
1606         *picture = *picture2;
1607     *bufp = buf;
1608 }
1609
1610 static void do_subtitle_out(AVFormatContext *s,
1611                             OutputStream *ost,
1612                             InputStream *ist,
1613                             AVSubtitle *sub,
1614                             int64_t pts)
1615 {
1616     static uint8_t *subtitle_out = NULL;
1617     int subtitle_out_max_size = 1024 * 1024;
1618     int subtitle_out_size, nb, i;
1619     AVCodecContext *enc;
1620     AVPacket pkt;
1621
1622     if (pts == AV_NOPTS_VALUE) {
1623         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1624         if (exit_on_error)
1625             exit_program(1);
1626         return;
1627     }
1628
1629     enc = ost->st->codec;
1630
1631     if (!subtitle_out) {
1632         subtitle_out = av_malloc(subtitle_out_max_size);
1633     }
1634
1635     /* Note: DVB subtitle need one packet to draw them and one other
1636        packet to clear them */
1637     /* XXX: signal it in the codec context ? */
1638     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1639         nb = 2;
1640     else
1641         nb = 1;
1642
1643     for (i = 0; i < nb; i++) {
1644         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1645
1646         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1647         // start_display_time is required to be 0
1648         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1649         sub->end_display_time  -= sub->start_display_time;
1650         sub->start_display_time = 0;
1651         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1652                                                     subtitle_out_max_size, sub);
1653         if (subtitle_out_size < 0) {
1654             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1655             exit_program(1);
1656         }
1657
1658         av_init_packet(&pkt);
1659         pkt.data = subtitle_out;
1660         pkt.size = subtitle_out_size;
1661         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1662         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1663         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1664             /* XXX: the pts correction is handled here. Maybe handling
1665                it in the codec would be better */
1666             if (i == 0)
1667                 pkt.pts += 90 * sub->start_display_time;
1668             else
1669                 pkt.pts += 90 * sub->end_display_time;
1670         }
1671         write_frame(s, &pkt, ost);
1672     }
1673 }
1674
1675 static void do_video_out(AVFormatContext *s,
1676                          OutputStream *ost,
1677                          AVFrame *in_picture,
1678                          float quality)
1679 {
1680     int ret, format_video_sync;
1681     AVPacket pkt;
1682     AVCodecContext *enc = ost->st->codec;
1683     int nb_frames;
1684     double sync_ipts, delta;
1685     double duration = 0;
1686     int frame_size = 0;
1687     InputStream *ist = NULL;
1688
1689     if (ost->source_index >= 0)
1690         ist = input_streams[ost->source_index];
1691
1692     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1693         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1694
1695     sync_ipts = in_picture->pts;
1696     delta = sync_ipts - ost->sync_opts + duration;
1697
1698     /* by default, we output a single frame */
1699     nb_frames = 1;
1700
1701     format_video_sync = video_sync_method;
1702     if (format_video_sync == VSYNC_AUTO)
1703         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1704
1705     switch (format_video_sync) {
1706     case VSYNC_CFR:
1707         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1708         if (delta < -1.1)
1709             nb_frames = 0;
1710         else if (delta > 1.1)
1711             nb_frames = lrintf(delta);
1712         break;
1713     case VSYNC_VFR:
1714         if (delta <= -0.6)
1715             nb_frames = 0;
1716         else if (delta > 0.6)
1717             ost->sync_opts = lrint(sync_ipts);
1718         break;
1719     case VSYNC_DROP:
1720     case VSYNC_PASSTHROUGH:
1721         ost->sync_opts = lrint(sync_ipts);
1722         break;
1723     default:
1724         av_assert0(0);
1725     }
1726
1727     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1728     if (nb_frames == 0) {
1729         nb_frames_drop++;
1730         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1731         return;
1732     } else if (nb_frames > 1) {
1733         nb_frames_dup += nb_frames - 1;
1734         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1735     }
1736
1737
1738 duplicate_frame:
1739     av_init_packet(&pkt);
1740     pkt.data = NULL;
1741     pkt.size = 0;
1742
1743     in_picture->pts = ost->sync_opts;
1744
1745     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1746         enc->codec->id == CODEC_ID_RAWVIDEO) {
1747         /* raw pictures are written as AVPicture structure to
1748            avoid any copies. We support temporarily the older
1749            method. */
1750         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1751         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1752         pkt.data   = (uint8_t *)in_picture;
1753         pkt.size   =  sizeof(AVPicture);
1754         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1755         pkt.flags |= AV_PKT_FLAG_KEY;
1756
1757         write_frame(s, &pkt, ost);
1758         video_size += pkt.size;
1759     } else {
1760         int got_packet;
1761         AVFrame big_picture;
1762
1763         big_picture = *in_picture;
1764         /* better than nothing: use input picture interlaced
1765            settings */
1766         big_picture.interlaced_frame = in_picture->interlaced_frame;
1767         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1768             if (ost->top_field_first == -1)
1769                 big_picture.top_field_first = in_picture->top_field_first;
1770             else
1771                 big_picture.top_field_first = !!ost->top_field_first;
1772         }
1773
1774         /* handles same_quant here. This is not correct because it may
1775            not be a global option */
1776         big_picture.quality = quality;
1777         if (!enc->me_threshold)
1778             big_picture.pict_type = 0;
1779         if (ost->forced_kf_index < ost->forced_kf_count &&
1780             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1781             big_picture.pict_type = AV_PICTURE_TYPE_I;
1782             ost->forced_kf_index++;
1783         }
1784         update_benchmark(NULL);
1785         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1786         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1787         if (ret < 0) {
1788             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1789             exit_program(1);
1790         }
1791
1792         if (got_packet) {
1793             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1794                 pkt.pts = ost->sync_opts;
1795
1796             if (pkt.pts != AV_NOPTS_VALUE)
1797                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1798             if (pkt.dts != AV_NOPTS_VALUE)
1799                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1800
1801             if (debug_ts) {
1802                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1803                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1804                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1805                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1806             }
1807
1808             write_frame(s, &pkt, ost);
1809             frame_size = pkt.size;
1810             video_size += pkt.size;
1811             av_free_packet(&pkt);
1812
1813             /* if two pass, output log */
1814             if (ost->logfile && enc->stats_out) {
1815                 fprintf(ost->logfile, "%s", enc->stats_out);
1816             }
1817         }
1818     }
1819     ost->sync_opts++;
1820     /*
1821      * For video, number of frames in == number of packets out.
1822      * But there may be reordering, so we can't throw away frames on encoder
1823      * flush, we need to limit them here, before they go into encoder.
1824      */
1825     ost->frame_number++;
1826
1827     if(--nb_frames)
1828         goto duplicate_frame;
1829
1830     if (vstats_filename && frame_size)
1831         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1832 }
1833
1834 static double psnr(double d)
1835 {
1836     return -10.0 * log(d) / log(10.0);
1837 }
1838
1839 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1840                            int frame_size)
1841 {
1842     AVCodecContext *enc;
1843     int frame_number;
1844     double ti1, bitrate, avg_bitrate;
1845
1846     /* this is executed just the first time do_video_stats is called */
1847     if (!vstats_file) {
1848         vstats_file = fopen(vstats_filename, "w");
1849         if (!vstats_file) {
1850             perror("fopen");
1851             exit_program(1);
1852         }
1853     }
1854
1855     enc = ost->st->codec;
1856     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1857         frame_number = ost->frame_number;
1858         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1859         if (enc->flags&CODEC_FLAG_PSNR)
1860             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1861
1862         fprintf(vstats_file,"f_size= %6d ", frame_size);
1863         /* compute pts value */
1864         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1865         if (ti1 < 0.01)
1866             ti1 = 0.01;
1867
1868         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1869         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1870         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1871                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1872         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1873     }
1874 }
1875
1876 /* check for new output on any of the filtergraphs */
1877 static int poll_filters(void)
1878 {
1879     AVFilterBufferRef *picref;
1880     AVFrame *filtered_frame = NULL;
1881     int i, ret, ret_all;
1882     unsigned nb_success, nb_eof;
1883     int64_t frame_pts;
1884
1885     while (1) {
1886         /* Reap all buffers present in the buffer sinks */
1887         for (i = 0; i < nb_output_streams; i++) {
1888             OutputStream *ost = output_streams[i];
1889             OutputFile    *of = output_files[ost->file_index];
1890             int ret = 0;
1891
1892             if (!ost->filter)
1893                 continue;
1894
1895             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1896                 return AVERROR(ENOMEM);
1897             } else
1898                 avcodec_get_frame_defaults(ost->filtered_frame);
1899             filtered_frame = ost->filtered_frame;
1900
1901             while (!ost->is_past_recording_time) {
1902                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1903                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1904                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1905                                                     ost->st->codec->frame_size);
1906                 else
1907 #ifdef SINKA
1908                     ret = av_buffersink_read(ost->filter->filter, &picref);
1909 #else
1910                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1911                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1912 #endif
1913                 if (ret < 0) {
1914                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1915                         char buf[256];
1916                         av_strerror(ret, buf, sizeof(buf));
1917                         av_log(NULL, AV_LOG_WARNING,
1918                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1919                     }
1920                     break;
1921                 }
1922                 frame_pts = AV_NOPTS_VALUE;
1923                 if (picref->pts != AV_NOPTS_VALUE) {
1924                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1925                                                     ost->filter->filter->inputs[0]->time_base,
1926                                                     ost->st->codec->time_base) -
1927                                         av_rescale_q(of->start_time,
1928                                                     AV_TIME_BASE_Q,
1929                                                     ost->st->codec->time_base);
1930
1931                     if (of->start_time && filtered_frame->pts < 0) {
1932                         avfilter_unref_buffer(picref);
1933                         continue;
1934                     }
1935                 }
1936                 //if (ost->source_index >= 0)
1937                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1938
1939
1940                 switch (ost->filter->filter->inputs[0]->type) {
1941                 case AVMEDIA_TYPE_VIDEO:
1942                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1943                     filtered_frame->pts = frame_pts;
1944                     if (!ost->frame_aspect_ratio)
1945                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1946
1947                     do_video_out(of->ctx, ost, filtered_frame,
1948                                  same_quant ? ost->last_quality :
1949                                               ost->st->codec->global_quality);
1950                     break;
1951                 case AVMEDIA_TYPE_AUDIO:
1952                     avfilter_copy_buf_props(filtered_frame, picref);
1953                     filtered_frame->pts = frame_pts;
1954                     do_audio_out(of->ctx, ost, filtered_frame);
1955                     break;
1956                 default:
1957                     // TODO support subtitle filters
1958                     av_assert0(0);
1959                 }
1960
1961                 avfilter_unref_buffer(picref);
1962             }
1963         }
1964         /* Request frames through all the graphs */
1965         ret_all = nb_success = nb_eof = 0;
1966         for (i = 0; i < nb_filtergraphs; i++) {
1967             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1968             if (!ret) {
1969                 nb_success++;
1970             } else if (ret == AVERROR_EOF) {
1971                 nb_eof++;
1972             } else if (ret != AVERROR(EAGAIN)) {
1973                 char buf[256];
1974                 av_strerror(ret, buf, sizeof(buf));
1975                 av_log(NULL, AV_LOG_WARNING,
1976                        "Error in request_frame(): %s\n", buf);
1977                 ret_all = ret;
1978             }
1979         }
1980         if (!nb_success)
1981             break;
1982         /* Try again if anything succeeded */
1983     }
1984     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1985 }
1986
1987 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1988 {
1989     char buf[1024];
1990     OutputStream *ost;
1991     AVFormatContext *oc;
1992     int64_t total_size;
1993     AVCodecContext *enc;
1994     int frame_number, vid, i;
1995     double bitrate;
1996     int64_t pts = INT64_MAX;
1997     static int64_t last_time = -1;
1998     static int qp_histogram[52];
1999     int hours, mins, secs, us;
2000
2001     if (!print_stats && !is_last_report)
2002         return;
2003
2004     if (!is_last_report) {
2005         if (last_time == -1) {
2006             last_time = cur_time;
2007             return;
2008         }
2009         if ((cur_time - last_time) < 500000)
2010             return;
2011         last_time = cur_time;
2012     }
2013
2014
2015     oc = output_files[0]->ctx;
2016
2017     total_size = avio_size(oc->pb);
2018     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2019         total_size = avio_tell(oc->pb);
2020         if (total_size < 0)
2021             total_size = 0;
2022     }
2023
2024     buf[0] = '\0';
2025     vid = 0;
2026     for (i = 0; i < nb_output_streams; i++) {
2027         float q = -1;
2028         ost = output_streams[i];
2029         enc = ost->st->codec;
2030         if (!ost->stream_copy && enc->coded_frame)
2031             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2032         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2033             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2034         }
2035         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2036             float fps, t = (cur_time-timer_start) / 1000000.0;
2037
2038             frame_number = ost->frame_number;
2039             fps = t > 1 ? frame_number / t : 0;
2040             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2041                      frame_number, fps < 9.95, fps, q);
2042             if (is_last_report)
2043                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2044             if (qp_hist) {
2045                 int j;
2046                 int qp = lrintf(q);
2047                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2048                     qp_histogram[qp]++;
2049                 for (j = 0; j < 32; j++)
2050                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2051             }
2052             if (enc->flags&CODEC_FLAG_PSNR) {
2053                 int j;
2054                 double error, error_sum = 0;
2055                 double scale, scale_sum = 0;
2056                 char type[3] = { 'Y','U','V' };
2057                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2058                 for (j = 0; j < 3; j++) {
2059                     if (is_last_report) {
2060                         error = enc->error[j];
2061                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2062                     } else {
2063                         error = enc->coded_frame->error[j];
2064                         scale = enc->width * enc->height * 255.0 * 255.0;
2065                     }
2066                     if (j)
2067                         scale /= 4;
2068                     error_sum += error;
2069                     scale_sum += scale;
2070                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2071                 }
2072                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2073             }
2074             vid = 1;
2075         }
2076         /* compute min output value */
2077         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2078                                       ost->st->time_base, AV_TIME_BASE_Q));
2079     }
2080
2081     secs = pts / AV_TIME_BASE;
2082     us = pts % AV_TIME_BASE;
2083     mins = secs / 60;
2084     secs %= 60;
2085     hours = mins / 60;
2086     mins %= 60;
2087
2088     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2089
2090     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2091              "size=%8.0fkB time=", total_size / 1024.0);
2092     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2093              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2094              (100 * us) / AV_TIME_BASE);
2095     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2096              "bitrate=%6.1fkbits/s", bitrate);
2097
2098     if (nb_frames_dup || nb_frames_drop)
2099         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2100                 nb_frames_dup, nb_frames_drop);
2101
2102     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2103
2104     fflush(stderr);
2105
2106     if (is_last_report) {
2107         int64_t raw= audio_size + video_size + extra_size;
2108         av_log(NULL, AV_LOG_INFO, "\n");
2109         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2110                video_size / 1024.0,
2111                audio_size / 1024.0,
2112                extra_size / 1024.0,
2113                100.0 * (total_size - raw) / raw
2114         );
2115         if(video_size + audio_size + extra_size == 0){
2116             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2117         }
2118     }
2119 }
2120
2121 static void flush_encoders(void)
2122 {
2123     int i, ret;
2124
2125     for (i = 0; i < nb_output_streams; i++) {
2126         OutputStream   *ost = output_streams[i];
2127         AVCodecContext *enc = ost->st->codec;
2128         AVFormatContext *os = output_files[ost->file_index]->ctx;
2129         int stop_encoding = 0;
2130
2131         if (!ost->encoding_needed)
2132             continue;
2133
2134         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2135             continue;
2136         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2137             continue;
2138
2139         for (;;) {
2140             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2141             const char *desc;
2142             int64_t *size;
2143
2144             switch (ost->st->codec->codec_type) {
2145             case AVMEDIA_TYPE_AUDIO:
2146                 encode = avcodec_encode_audio2;
2147                 desc   = "Audio";
2148                 size   = &audio_size;
2149                 break;
2150             case AVMEDIA_TYPE_VIDEO:
2151                 encode = avcodec_encode_video2;
2152                 desc   = "Video";
2153                 size   = &video_size;
2154                 break;
2155             default:
2156                 stop_encoding = 1;
2157             }
2158
2159             if (encode) {
2160                 AVPacket pkt;
2161                 int got_packet;
2162                 av_init_packet(&pkt);
2163                 pkt.data = NULL;
2164                 pkt.size = 0;
2165
2166                 update_benchmark(NULL);
2167                 ret = encode(enc, &pkt, NULL, &got_packet);
2168                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2169                 if (ret < 0) {
2170                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2171                     exit_program(1);
2172                 }
2173                 *size += pkt.size;
2174                 if (ost->logfile && enc->stats_out) {
2175                     fprintf(ost->logfile, "%s", enc->stats_out);
2176                 }
2177                 if (!got_packet) {
2178                     stop_encoding = 1;
2179                     break;
2180                 }
2181                 if (pkt.pts != AV_NOPTS_VALUE)
2182                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2183                 if (pkt.dts != AV_NOPTS_VALUE)
2184                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2185                 write_frame(os, &pkt, ost);
2186             }
2187
2188             if (stop_encoding)
2189                 break;
2190         }
2191     }
2192 }
2193
2194 /*
2195  * Check whether a packet from ist should be written into ost at this time
2196  */
2197 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2198 {
2199     OutputFile *of = output_files[ost->file_index];
2200     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2201
2202     if (ost->source_index != ist_index)
2203         return 0;
2204
2205     if (of->start_time && ist->pts < of->start_time)
2206         return 0;
2207
2208     if (of->recording_time != INT64_MAX &&
2209         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2210                       (AVRational){ 1, 1000000 }) >= 0) {
2211         ost->is_past_recording_time = 1;
2212         return 0;
2213     }
2214
2215     return 1;
2216 }
2217
2218 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2219 {
2220     OutputFile *of = output_files[ost->file_index];
2221     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2222     AVPicture pict;
2223     AVPacket opkt;
2224
2225     av_init_packet(&opkt);
2226
2227     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2228         !ost->copy_initial_nonkeyframes)
2229         return;
2230
2231     /* force the input stream PTS */
2232     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2233         audio_size += pkt->size;
2234     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2235         video_size += pkt->size;
2236         ost->sync_opts++;
2237     }
2238
2239     if (pkt->pts != AV_NOPTS_VALUE)
2240         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2241     else
2242         opkt.pts = AV_NOPTS_VALUE;
2243
2244     if (pkt->dts == AV_NOPTS_VALUE)
2245         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2246     else
2247         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2248     opkt.dts -= ost_tb_start_time;
2249
2250     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2251     opkt.flags    = pkt->flags;
2252
2253     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2254     if (  ost->st->codec->codec_id != CODEC_ID_H264
2255        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2256        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2257        && ost->st->codec->codec_id != CODEC_ID_VC1
2258        ) {
2259         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2260             opkt.destruct = av_destruct_packet;
2261     } else {
2262         opkt.data = pkt->data;
2263         opkt.size = pkt->size;
2264     }
2265     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2266         /* store AVPicture in AVPacket, as expected by the output format */
2267         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2268         opkt.data = (uint8_t *)&pict;
2269         opkt.size = sizeof(AVPicture);
2270         opkt.flags |= AV_PKT_FLAG_KEY;
2271     }
2272
2273     write_frame(of->ctx, &opkt, ost);
2274     ost->st->codec->frame_number++;
2275     av_free_packet(&opkt);
2276 }
2277
2278 static void rate_emu_sleep(InputStream *ist)
2279 {
2280     if (input_files[ist->file_index]->rate_emu) {
2281         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2282         int64_t now = av_gettime() - ist->start;
2283         if (pts > now)
2284             usleep(pts - now);
2285     }
2286 }
2287
2288 static int guess_input_channel_layout(InputStream *ist)
2289 {
2290     AVCodecContext *dec = ist->st->codec;
2291
2292     if (!dec->channel_layout) {
2293         char layout_name[256];
2294
2295         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2296         if (!dec->channel_layout)
2297             return 0;
2298         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2299                                      dec->channels, dec->channel_layout);
2300         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2301                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2302     }
2303     return 1;
2304 }
2305
2306 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2307 {
2308     AVFrame *decoded_frame;
2309     AVCodecContext *avctx = ist->st->codec;
2310     int i, ret, resample_changed;
2311
2312     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2313         return AVERROR(ENOMEM);
2314     else
2315         avcodec_get_frame_defaults(ist->decoded_frame);
2316     decoded_frame = ist->decoded_frame;
2317
2318     update_benchmark(NULL);
2319     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2320     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2321     if (ret < 0) {
2322         return ret;
2323     }
2324     if (avctx->sample_rate <= 0) {
2325         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2326         return AVERROR_INVALIDDATA;
2327     }
2328
2329     if (!*got_output) {
2330         /* no audio frame */
2331         if (!pkt->size)
2332             for (i = 0; i < ist->nb_filters; i++)
2333                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2334                                      AV_BUFFERSRC_FLAG_NO_COPY);
2335         return ret;
2336     }
2337
2338     /* if the decoder provides a pts, use it instead of the last packet pts.
2339        the decoder could be delaying output by a packet or more. */
2340     if (decoded_frame->pts != AV_NOPTS_VALUE)
2341         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2342     else if (pkt->pts != AV_NOPTS_VALUE) {
2343         decoded_frame->pts = pkt->pts;
2344         pkt->pts           = AV_NOPTS_VALUE;
2345     }else
2346         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2347
2348
2349 #if 1
2350     /* increment next_dts to use for the case where the input stream does not
2351        have timestamps or there are multiple frames in the packet */
2352     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2353                      avctx->sample_rate;
2354     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2355                      avctx->sample_rate;
2356 #endif
2357
2358     rate_emu_sleep(ist);
2359
2360     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2361                        ist->resample_channels       != avctx->channels               ||
2362                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2363                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2364     if (resample_changed) {
2365         char layout1[64], layout2[64];
2366
2367         if (!guess_input_channel_layout(ist)) {
2368             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2369                    "layout for Input Stream #%d.%d\n", ist->file_index,
2370                    ist->st->index);
2371             exit_program(1);
2372         }
2373         decoded_frame->channel_layout = avctx->channel_layout;
2374
2375         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2376                                      ist->resample_channel_layout);
2377         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2378                                      decoded_frame->channel_layout);
2379
2380         av_log(NULL, AV_LOG_INFO,
2381                "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",
2382                ist->file_index, ist->st->index,
2383                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2384                ist->resample_channels, layout1,
2385                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2386                avctx->channels, layout2);
2387
2388         ist->resample_sample_fmt     = decoded_frame->format;
2389         ist->resample_sample_rate    = decoded_frame->sample_rate;
2390         ist->resample_channel_layout = decoded_frame->channel_layout;
2391         ist->resample_channels       = avctx->channels;
2392
2393         for (i = 0; i < nb_filtergraphs; i++)
2394             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2395                 configure_filtergraph(filtergraphs[i]) < 0) {
2396                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2397                 exit_program(1);
2398             }
2399     }
2400
2401     for (i = 0; i < ist->nb_filters; i++)
2402         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2403
2404     return ret;
2405 }
2406
2407 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2408 {
2409     AVFrame *decoded_frame;
2410     void *buffer_to_free = NULL;
2411     int i, ret = 0, resample_changed;
2412     int64_t best_effort_timestamp;
2413     AVRational *frame_sample_aspect;
2414     float quality;
2415
2416     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2417         return AVERROR(ENOMEM);
2418     else
2419         avcodec_get_frame_defaults(ist->decoded_frame);
2420     decoded_frame = ist->decoded_frame;
2421     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2422
2423     update_benchmark(NULL);
2424     ret = avcodec_decode_video2(ist->st->codec,
2425                                 decoded_frame, got_output, pkt);
2426     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2427     if (ret < 0)
2428         return ret;
2429
2430     quality = same_quant ? decoded_frame->quality : 0;
2431     if (!*got_output) {
2432         /* no picture yet */
2433         if (!pkt->size)
2434             for (i = 0; i < ist->nb_filters; i++)
2435                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2436         return ret;
2437     }
2438
2439     if(ist->top_field_first>=0)
2440         decoded_frame->top_field_first = ist->top_field_first;
2441
2442     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2443     if(best_effort_timestamp != AV_NOPTS_VALUE)
2444         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2445
2446     pkt->size = 0;
2447     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2448
2449     rate_emu_sleep(ist);
2450
2451     if (ist->st->sample_aspect_ratio.num)
2452         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2453
2454     resample_changed = ist->resample_width   != decoded_frame->width  ||
2455                        ist->resample_height  != decoded_frame->height ||
2456                        ist->resample_pix_fmt != decoded_frame->format;
2457     if (resample_changed) {
2458         av_log(NULL, AV_LOG_INFO,
2459                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2460                ist->file_index, ist->st->index,
2461                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2462                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2463
2464         ist->resample_width   = decoded_frame->width;
2465         ist->resample_height  = decoded_frame->height;
2466         ist->resample_pix_fmt = decoded_frame->format;
2467
2468         for (i = 0; i < nb_filtergraphs; i++)
2469             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2470                 configure_filtergraph(filtergraphs[i]) < 0) {
2471                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2472                 exit_program(1);
2473             }
2474     }
2475
2476     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2477     for (i = 0; i < ist->nb_filters; i++) {
2478         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2479                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2480                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2481         // XXX what an ugly hack
2482         if (ist->filters[i]->graph->nb_outputs == 1)
2483             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2484
2485         if (!frame_sample_aspect->num)
2486             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2487         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2488             FrameBuffer      *buf = decoded_frame->opaque;
2489             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2490                                         decoded_frame->data, decoded_frame->linesize,
2491                                         AV_PERM_READ | AV_PERM_PRESERVE,
2492                                         ist->st->codec->width, ist->st->codec->height,
2493                                         ist->st->codec->pix_fmt);
2494
2495             avfilter_copy_frame_props(fb, decoded_frame);
2496             fb->buf->priv           = buf;
2497             fb->buf->free           = filter_release_buffer;
2498
2499             av_assert0(buf->refcount>0);
2500             buf->refcount++;
2501             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2502                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2503                                  AV_BUFFERSRC_FLAG_NO_COPY);
2504         } else
2505         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2506             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2507             exit_program(1);
2508         }
2509
2510     }
2511
2512     av_free(buffer_to_free);
2513     return ret;
2514 }
2515
2516 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2517 {
2518     AVSubtitle subtitle;
2519     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2520                                           &subtitle, got_output, pkt);
2521     if (ret < 0)
2522         return ret;
2523     if (!*got_output)
2524         return ret;
2525
2526     rate_emu_sleep(ist);
2527
2528     for (i = 0; i < nb_output_streams; i++) {
2529         OutputStream *ost = output_streams[i];
2530
2531         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2532             continue;
2533
2534         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2535     }
2536
2537     avsubtitle_free(&subtitle);
2538     return ret;
2539 }
2540
2541 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2542 static int output_packet(InputStream *ist, const AVPacket *pkt)
2543 {
2544     int ret = 0, i;
2545     int got_output;
2546
2547     AVPacket avpkt;
2548     if (!ist->saw_first_ts) {
2549         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;
2550         ist->pts = 0;
2551         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2552             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2553             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2554         }
2555         ist->saw_first_ts = 1;
2556     }
2557
2558     if (ist->next_dts == AV_NOPTS_VALUE)
2559         ist->next_dts = ist->dts;
2560     if (ist->next_pts == AV_NOPTS_VALUE)
2561         ist->next_pts = ist->pts;
2562
2563     if (pkt == NULL) {
2564         /* EOF handling */
2565         av_init_packet(&avpkt);
2566         avpkt.data = NULL;
2567         avpkt.size = 0;
2568         goto handle_eof;
2569     } else {
2570         avpkt = *pkt;
2571     }
2572
2573     if (pkt->dts != AV_NOPTS_VALUE) {
2574         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2575         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2576             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2577     }
2578
2579     // while we have more to decode or while the decoder did output something on EOF
2580     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2581         int duration;
2582     handle_eof:
2583
2584         ist->pts = ist->next_pts;
2585         ist->dts = ist->next_dts;
2586
2587         if (avpkt.size && avpkt.size != pkt->size) {
2588             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2589                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2590             ist->showed_multi_packet_warning = 1;
2591         }
2592
2593         switch (ist->st->codec->codec_type) {
2594         case AVMEDIA_TYPE_AUDIO:
2595             ret = decode_audio    (ist, &avpkt, &got_output);
2596             break;
2597         case AVMEDIA_TYPE_VIDEO:
2598             ret = decode_video    (ist, &avpkt, &got_output);
2599             if (avpkt.duration) {
2600                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2601             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2602                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2603                 duration = ((int64_t)AV_TIME_BASE *
2604                                 ist->st->codec->time_base.num * ticks) /
2605                                 ist->st->codec->time_base.den;
2606             } else
2607                 duration = 0;
2608
2609             if(ist->dts != AV_NOPTS_VALUE && duration) {
2610                 ist->next_dts += duration;
2611             }else
2612                 ist->next_dts = AV_NOPTS_VALUE;
2613
2614             if (got_output)
2615                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2616             break;
2617         case AVMEDIA_TYPE_SUBTITLE:
2618             ret = transcode_subtitles(ist, &avpkt, &got_output);
2619             break;
2620         default:
2621             return -1;
2622         }
2623
2624         if (ret < 0)
2625             return ret;
2626
2627         avpkt.dts=
2628         avpkt.pts= AV_NOPTS_VALUE;
2629
2630         // touch data and size only if not EOF
2631         if (pkt) {
2632             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2633                 ret = avpkt.size;
2634             avpkt.data += ret;
2635             avpkt.size -= ret;
2636         }
2637         if (!got_output) {
2638             continue;
2639         }
2640     }
2641
2642     /* handle stream copy */
2643     if (!ist->decoding_needed) {
2644         rate_emu_sleep(ist);
2645         ist->dts = ist->next_dts;
2646         switch (ist->st->codec->codec_type) {
2647         case AVMEDIA_TYPE_AUDIO:
2648             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2649                              ist->st->codec->sample_rate;
2650             break;
2651         case AVMEDIA_TYPE_VIDEO:
2652             if (pkt->duration) {
2653                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2654             } else if(ist->st->codec->time_base.num != 0) {
2655                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2656                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2657                                   ist->st->codec->time_base.num * ticks) /
2658                                   ist->st->codec->time_base.den;
2659             }
2660             break;
2661         }
2662         ist->pts = ist->dts;
2663         ist->next_pts = ist->next_dts;
2664     }
2665     for (i = 0; pkt && i < nb_output_streams; i++) {
2666         OutputStream *ost = output_streams[i];
2667
2668         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2669             continue;
2670
2671         do_streamcopy(ist, ost, pkt);
2672     }
2673
2674     return 0;
2675 }
2676
2677 static void print_sdp(void)
2678 {
2679     char sdp[2048];
2680     int i;
2681     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2682
2683     if (!avc)
2684         exit_program(1);
2685     for (i = 0; i < nb_output_files; i++)
2686         avc[i] = output_files[i]->ctx;
2687
2688     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2689     printf("SDP:\n%s\n", sdp);
2690     fflush(stdout);
2691     av_freep(&avc);
2692 }
2693
2694 static int init_input_stream(int ist_index, char *error, int error_len)
2695 {
2696     InputStream *ist = input_streams[ist_index];
2697
2698     if (ist->decoding_needed) {
2699         AVCodec *codec = ist->dec;
2700         if (!codec) {
2701             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2702                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2703             return AVERROR(EINVAL);
2704         }
2705
2706         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2707         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2708             ist->st->codec->get_buffer     = codec_get_buffer;
2709             ist->st->codec->release_buffer = codec_release_buffer;
2710             ist->st->codec->opaque         = &ist->buffer_pool;
2711         }
2712
2713         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2714             av_dict_set(&ist->opts, "threads", "auto", 0);
2715         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2716             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2717                     ist->file_index, ist->st->index);
2718             return AVERROR(EINVAL);
2719         }
2720         assert_codec_experimental(ist->st->codec, 0);
2721         assert_avoptions(ist->opts);
2722     }
2723
2724     ist->next_pts = AV_NOPTS_VALUE;
2725     ist->next_dts = AV_NOPTS_VALUE;
2726     ist->is_start = 1;
2727
2728     return 0;
2729 }
2730
2731 static InputStream *get_input_stream(OutputStream *ost)
2732 {
2733     if (ost->source_index >= 0)
2734         return input_streams[ost->source_index];
2735     return NULL;
2736 }
2737
2738 static int transcode_init(void)
2739 {
2740     int ret = 0, i, j, k;
2741     AVFormatContext *oc;
2742     AVCodecContext *codec, *icodec = NULL;
2743     OutputStream *ost;
2744     InputStream *ist;
2745     char error[1024];
2746     int want_sdp = 1;
2747
2748     /* init framerate emulation */
2749     for (i = 0; i < nb_input_files; i++) {
2750         InputFile *ifile = input_files[i];
2751         if (ifile->rate_emu)
2752             for (j = 0; j < ifile->nb_streams; j++)
2753                 input_streams[j + ifile->ist_index]->start = av_gettime();
2754     }
2755
2756     /* output stream init */
2757     for (i = 0; i < nb_output_files; i++) {
2758         oc = output_files[i]->ctx;
2759         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2760             av_dump_format(oc, i, oc->filename, 1);
2761             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2762             return AVERROR(EINVAL);
2763         }
2764     }
2765
2766     /* init complex filtergraphs */
2767     for (i = 0; i < nb_filtergraphs; i++)
2768         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2769             return ret;
2770
2771     /* for each output stream, we compute the right encoding parameters */
2772     for (i = 0; i < nb_output_streams; i++) {
2773         ost = output_streams[i];
2774         oc  = output_files[ost->file_index]->ctx;
2775         ist = get_input_stream(ost);
2776
2777         if (ost->attachment_filename)
2778             continue;
2779
2780         codec  = ost->st->codec;
2781
2782         if (ist) {
2783             icodec = ist->st->codec;
2784
2785             ost->st->disposition          = ist->st->disposition;
2786             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2787             codec->chroma_sample_location = icodec->chroma_sample_location;
2788         }
2789
2790         if (ost->stream_copy) {
2791             uint64_t extra_size;
2792
2793             av_assert0(ist && !ost->filter);
2794
2795             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2796
2797             if (extra_size > INT_MAX) {
2798                 return AVERROR(EINVAL);
2799             }
2800
2801             /* if stream_copy is selected, no need to decode or encode */
2802             codec->codec_id   = icodec->codec_id;
2803             codec->codec_type = icodec->codec_type;
2804
2805             if (!codec->codec_tag) {
2806                 if (!oc->oformat->codec_tag ||
2807                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2808                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2809                     codec->codec_tag = icodec->codec_tag;
2810             }
2811
2812             codec->bit_rate       = icodec->bit_rate;
2813             codec->rc_max_rate    = icodec->rc_max_rate;
2814             codec->rc_buffer_size = icodec->rc_buffer_size;
2815             codec->field_order    = icodec->field_order;
2816             codec->extradata      = av_mallocz(extra_size);
2817             if (!codec->extradata) {
2818                 return AVERROR(ENOMEM);
2819             }
2820             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2821             codec->extradata_size= icodec->extradata_size;
2822             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2823
2824             codec->time_base = ist->st->time_base;
2825             /*
2826              * Avi is a special case here because it supports variable fps but
2827              * having the fps and timebase differe significantly adds quite some
2828              * overhead
2829              */
2830             if(!strcmp(oc->oformat->name, "avi")) {
2831                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2832                                  && av_q2d(ist->st->time_base) < 1.0/500
2833                     || copy_tb==0){
2834                     codec->time_base = icodec->time_base;
2835                     codec->time_base.num *= icodec->ticks_per_frame;
2836                     codec->time_base.den *= 2;
2837                     codec->ticks_per_frame = 2;
2838                 }
2839             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2840                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2841                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2842             ) {
2843                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2844                                 && av_q2d(ist->st->time_base) < 1.0/500
2845                    || copy_tb==0){
2846                     codec->time_base = icodec->time_base;
2847                     codec->time_base.num *= icodec->ticks_per_frame;
2848                 }
2849             }
2850             av_reduce(&codec->time_base.num, &codec->time_base.den,
2851                         codec->time_base.num, codec->time_base.den, INT_MAX);
2852
2853             switch (codec->codec_type) {
2854             case AVMEDIA_TYPE_AUDIO:
2855                 if (audio_volume != 256) {
2856                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2857                     exit_program(1);
2858                 }
2859                 codec->channel_layout     = icodec->channel_layout;
2860                 codec->sample_rate        = icodec->sample_rate;
2861                 codec->channels           = icodec->channels;
2862                 codec->frame_size         = icodec->frame_size;
2863                 codec->audio_service_type = icodec->audio_service_type;
2864                 codec->block_align        = icodec->block_align;
2865                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2866                     codec->block_align= 0;
2867                 if(codec->codec_id == CODEC_ID_AC3)
2868                     codec->block_align= 0;
2869                 break;
2870             case AVMEDIA_TYPE_VIDEO:
2871                 codec->pix_fmt            = icodec->pix_fmt;
2872                 codec->width              = icodec->width;
2873                 codec->height             = icodec->height;
2874                 codec->has_b_frames       = icodec->has_b_frames;
2875                 if (!codec->sample_aspect_ratio.num) {
2876                     codec->sample_aspect_ratio   =
2877                     ost->st->sample_aspect_ratio =
2878                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2879                         ist->st->codec->sample_aspect_ratio.num ?
2880                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2881                 }
2882                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2883                 break;
2884             case AVMEDIA_TYPE_SUBTITLE:
2885                 codec->width  = icodec->width;
2886                 codec->height = icodec->height;
2887                 break;
2888             case AVMEDIA_TYPE_DATA:
2889             case AVMEDIA_TYPE_ATTACHMENT:
2890                 break;
2891             default:
2892                 abort();
2893             }
2894         } else {
2895             if (!ost->enc)
2896                 ost->enc = avcodec_find_encoder(codec->codec_id);
2897             if (!ost->enc) {
2898                 /* should only happen when a default codec is not present. */
2899                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2900                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2901                 ret = AVERROR(EINVAL);
2902                 goto dump_format;
2903             }
2904
2905             if (ist)
2906                 ist->decoding_needed = 1;
2907             ost->encoding_needed = 1;
2908
2909             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2910                 if (ost->filter && !ost->frame_rate.num)
2911                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2912                 if (ist && !ost->frame_rate.num)
2913                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2914                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2915                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2916                     ost->frame_rate = ost->enc->supported_framerates[idx];
2917                 }
2918             }
2919
2920             if (!ost->filter &&
2921                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2922                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2923                     FilterGraph *fg;
2924                     fg = init_simple_filtergraph(ist, ost);
2925                     if (configure_filtergraph(fg)) {
2926                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2927                         exit(1);
2928                     }
2929             }
2930
2931             switch (codec->codec_type) {
2932             case AVMEDIA_TYPE_AUDIO:
2933                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2934                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2935                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2936                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2937                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2938                 break;
2939             case AVMEDIA_TYPE_VIDEO:
2940                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2941                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2942                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2943                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2944                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2945                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2946                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2947                 }
2948                 for (j = 0; j < ost->forced_kf_count; j++)
2949                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2950                                                          AV_TIME_BASE_Q,
2951                                                          codec->time_base);
2952
2953                 codec->width  = ost->filter->filter->inputs[0]->w;
2954                 codec->height = ost->filter->filter->inputs[0]->h;
2955                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2956                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2957                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2958                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2959                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2960
2961                 if (!icodec ||
2962                     codec->width   != icodec->width  ||
2963                     codec->height  != icodec->height ||
2964                     codec->pix_fmt != icodec->pix_fmt) {
2965                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2966                 }
2967
2968                 break;
2969             case AVMEDIA_TYPE_SUBTITLE:
2970                 codec->time_base = (AVRational){1, 1000};
2971                 break;
2972             default:
2973                 abort();
2974                 break;
2975             }
2976             /* two pass mode */
2977             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2978                 char logfilename[1024];
2979                 FILE *f;
2980
2981                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2982                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2983                          i);
2984                 if (!strcmp(ost->enc->name, "libx264")) {
2985                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2986                 } else {
2987                     if (codec->flags & CODEC_FLAG_PASS2) {
2988                         char  *logbuffer;
2989                         size_t logbuffer_size;
2990                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2991                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2992                                    logfilename);
2993                             exit_program(1);
2994                         }
2995                         codec->stats_in = logbuffer;
2996                     }
2997                     if (codec->flags & CODEC_FLAG_PASS1) {
2998                         f = fopen(logfilename, "wb");
2999                         if (!f) {
3000                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3001                                 logfilename, strerror(errno));
3002                             exit_program(1);
3003                         }
3004                         ost->logfile = f;
3005                     }
3006                 }
3007             }
3008         }
3009     }
3010
3011     /* open each encoder */
3012     for (i = 0; i < nb_output_streams; i++) {
3013         ost = output_streams[i];
3014         if (ost->encoding_needed) {
3015             AVCodec      *codec = ost->enc;
3016             AVCodecContext *dec = NULL;
3017
3018             if ((ist = get_input_stream(ost)))
3019                 dec = ist->st->codec;
3020             if (dec && dec->subtitle_header) {
3021                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3022                 if (!ost->st->codec->subtitle_header) {
3023                     ret = AVERROR(ENOMEM);
3024                     goto dump_format;
3025                 }
3026                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3027                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3028             }
3029             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3030                 av_dict_set(&ost->opts, "threads", "auto", 0);
3031             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3032                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3033                         ost->file_index, ost->index);
3034                 ret = AVERROR(EINVAL);
3035                 goto dump_format;
3036             }
3037             assert_codec_experimental(ost->st->codec, 1);
3038             assert_avoptions(ost->opts);
3039             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3040                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3041                                              " It takes bits/s as argument, not kbits/s\n");
3042             extra_size += ost->st->codec->extradata_size;
3043
3044             if (ost->st->codec->me_threshold)
3045                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3046         }
3047     }
3048
3049     /* init input streams */
3050     for (i = 0; i < nb_input_streams; i++)
3051         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3052             goto dump_format;
3053
3054     /* discard unused programs */
3055     for (i = 0; i < nb_input_files; i++) {
3056         InputFile *ifile = input_files[i];
3057         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3058             AVProgram *p = ifile->ctx->programs[j];
3059             int discard  = AVDISCARD_ALL;
3060
3061             for (k = 0; k < p->nb_stream_indexes; k++)
3062                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3063                     discard = AVDISCARD_DEFAULT;
3064                     break;
3065                 }
3066             p->discard = discard;
3067         }
3068     }
3069
3070     /* open files and write file headers */
3071     for (i = 0; i < nb_output_files; i++) {
3072         oc = output_files[i]->ctx;
3073         oc->interrupt_callback = int_cb;
3074         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3075             char errbuf[128];
3076             const char *errbuf_ptr = errbuf;
3077             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3078                 errbuf_ptr = strerror(AVUNERROR(ret));
3079             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3080             ret = AVERROR(EINVAL);
3081             goto dump_format;
3082         }
3083 //         assert_avoptions(output_files[i]->opts);
3084         if (strcmp(oc->oformat->name, "rtp")) {
3085             want_sdp = 0;
3086         }
3087     }
3088
3089  dump_format:
3090     /* dump the file output parameters - cannot be done before in case
3091        of stream copy */
3092     for (i = 0; i < nb_output_files; i++) {
3093         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3094     }
3095
3096     /* dump the stream mapping */
3097     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3098     for (i = 0; i < nb_input_streams; i++) {
3099         ist = input_streams[i];
3100
3101         for (j = 0; j < ist->nb_filters; j++) {
3102             if (ist->filters[j]->graph->graph_desc) {
3103                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3104                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3105                        ist->filters[j]->name);
3106                 if (nb_filtergraphs > 1)
3107                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3108                 av_log(NULL, AV_LOG_INFO, "\n");
3109             }
3110         }
3111     }
3112
3113     for (i = 0; i < nb_output_streams; i++) {
3114         ost = output_streams[i];
3115
3116         if (ost->attachment_filename) {
3117             /* an attached file */
3118             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3119                    ost->attachment_filename, ost->file_index, ost->index);
3120             continue;
3121         }
3122
3123         if (ost->filter && ost->filter->graph->graph_desc) {
3124             /* output from a complex graph */
3125             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3126             if (nb_filtergraphs > 1)
3127                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3128
3129             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3130                    ost->index, ost->enc ? ost->enc->name : "?");
3131             continue;
3132         }
3133
3134         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3135                input_streams[ost->source_index]->file_index,
3136                input_streams[ost->source_index]->st->index,
3137                ost->file_index,
3138                ost->index);
3139         if (ost->sync_ist != input_streams[ost->source_index])
3140             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3141                    ost->sync_ist->file_index,
3142                    ost->sync_ist->st->index);
3143         if (ost->stream_copy)
3144             av_log(NULL, AV_LOG_INFO, " (copy)");
3145         else
3146             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3147                    input_streams[ost->source_index]->dec->name : "?",
3148                    ost->enc ? ost->enc->name : "?");
3149         av_log(NULL, AV_LOG_INFO, "\n");
3150     }
3151
3152     if (ret) {
3153         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3154         return ret;
3155     }
3156
3157     if (want_sdp) {
3158         print_sdp();
3159     }
3160
3161     return 0;
3162 }
3163
3164 /**
3165  * @return 1 if there are still streams where more output is wanted,
3166  *         0 otherwise
3167  */
3168 static int need_output(void)
3169 {
3170     int i;
3171
3172     for (i = 0; i < nb_output_streams; i++) {
3173         OutputStream *ost    = output_streams[i];
3174         OutputFile *of       = output_files[ost->file_index];
3175         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3176
3177         if (ost->is_past_recording_time ||
3178             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3179             continue;
3180         if (ost->frame_number >= ost->max_frames) {
3181             int j;
3182             for (j = 0; j < of->ctx->nb_streams; j++)
3183                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3184             continue;
3185         }
3186
3187         return 1;
3188     }
3189
3190     return 0;
3191 }
3192
3193 static int select_input_file(uint8_t *no_packet)
3194 {
3195     int64_t ipts_min = INT64_MAX;
3196     int i, file_index = -1;
3197
3198     for (i = 0; i < nb_input_streams; i++) {
3199         InputStream *ist = input_streams[i];
3200         int64_t ipts     = ist->pts;
3201
3202         if (ist->discard || no_packet[ist->file_index])
3203             continue;
3204         if (!input_files[ist->file_index]->eof_reached) {
3205             if (ipts < ipts_min) {
3206                 ipts_min = ipts;
3207                 file_index = ist->file_index;
3208             }
3209         }
3210     }
3211
3212     return file_index;
3213 }
3214
3215 static int check_keyboard_interaction(int64_t cur_time)
3216 {
3217     int i, ret, key;
3218     static int64_t last_time;
3219     if (received_nb_signals)
3220         return AVERROR_EXIT;
3221     /* read_key() returns 0 on EOF */
3222     if(cur_time - last_time >= 100000 && !run_as_daemon){
3223         key =  read_key();
3224         last_time = cur_time;
3225     }else
3226         key = -1;
3227     if (key == 'q')
3228         return AVERROR_EXIT;
3229     if (key == '+') av_log_set_level(av_log_get_level()+10);
3230     if (key == '-') av_log_set_level(av_log_get_level()-10);
3231     if (key == 's') qp_hist     ^= 1;
3232     if (key == 'h'){
3233         if (do_hex_dump){
3234             do_hex_dump = do_pkt_dump = 0;
3235         } else if(do_pkt_dump){
3236             do_hex_dump = 1;
3237         } else
3238             do_pkt_dump = 1;
3239         av_log_set_level(AV_LOG_DEBUG);
3240     }
3241     if (key == 'c' || key == 'C'){
3242         char buf[4096], target[64], command[256], arg[256] = {0};
3243         double time;
3244         int k, n = 0;
3245         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3246         i = 0;
3247         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3248             if (k > 0)
3249                 buf[i++] = k;
3250         buf[i] = 0;
3251         if (k > 0 &&
3252             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3253             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3254                    target, time, command, arg);
3255             for (i = 0; i < nb_filtergraphs; i++) {
3256                 FilterGraph *fg = filtergraphs[i];
3257                 if (fg->graph) {
3258                     if (time < 0) {
3259                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3260                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3261                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3262                     } else {
3263                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3264                     }
3265                 }
3266             }
3267         } else {
3268             av_log(NULL, AV_LOG_ERROR,
3269                    "Parse error, at least 3 arguments were expected, "
3270                    "only %d given in string '%s'\n", n, buf);
3271         }
3272     }
3273     if (key == 'd' || key == 'D'){
3274         int debug=0;
3275         if(key == 'D') {
3276             debug = input_streams[0]->st->codec->debug<<1;
3277             if(!debug) debug = 1;
3278             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3279                 debug += debug;
3280         }else
3281             if(scanf("%d", &debug)!=1)
3282                 fprintf(stderr,"error parsing debug value\n");
3283         for(i=0;i<nb_input_streams;i++) {
3284             input_streams[i]->st->codec->debug = debug;
3285         }
3286         for(i=0;i<nb_output_streams;i++) {
3287             OutputStream *ost = output_streams[i];
3288             ost->st->codec->debug = debug;
3289         }
3290         if(debug) av_log_set_level(AV_LOG_DEBUG);
3291         fprintf(stderr,"debug=%d\n", debug);
3292     }
3293     if (key == '?'){
3294         fprintf(stderr, "key    function\n"
3295                         "?      show this help\n"
3296                         "+      increase verbosity\n"
3297                         "-      decrease verbosity\n"
3298                         "c      Send command to filtergraph\n"
3299                         "D      cycle through available debug modes\n"
3300                         "h      dump packets/hex press to cycle through the 3 states\n"
3301                         "q      quit\n"
3302                         "s      Show QP histogram\n"
3303         );
3304     }
3305     return 0;
3306 }
3307
3308 /*
3309  * The following code is the main loop of the file converter
3310  */
3311 static int transcode(void)
3312 {
3313     int ret, i;
3314     AVFormatContext *is, *os;
3315     OutputStream *ost;
3316     InputStream *ist;
3317     uint8_t *no_packet;
3318     int no_packet_count = 0;
3319     int64_t timer_start;
3320
3321     if (!(no_packet = av_mallocz(nb_input_files)))
3322         exit_program(1);
3323
3324     ret = transcode_init();
3325     if (ret < 0)
3326         goto fail;
3327
3328     if (!using_stdin) {
3329         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3330     }
3331
3332     timer_start = av_gettime();
3333
3334     for (; received_sigterm == 0;) {
3335         int file_index, ist_index;
3336         AVPacket pkt;
3337         int64_t cur_time= av_gettime();
3338
3339         /* if 'q' pressed, exits */
3340         if (!using_stdin)
3341             if (check_keyboard_interaction(cur_time) < 0)
3342                 break;
3343
3344         /* check if there's any stream where output is still needed */
3345         if (!need_output()) {
3346             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3347             break;
3348         }
3349
3350         /* select the stream that we must read now */
3351         file_index = select_input_file(no_packet);
3352         /* if none, if is finished */
3353         if (file_index < 0) {
3354             if (no_packet_count) {
3355                 no_packet_count = 0;
3356                 memset(no_packet, 0, nb_input_files);
3357                 usleep(10000);
3358                 continue;
3359             }
3360             break;
3361         }
3362
3363         /* read a frame from it and output it in the fifo */
3364         is  = input_files[file_index]->ctx;
3365         ret = av_read_frame(is, &pkt);
3366         if (ret == AVERROR(EAGAIN)) {
3367             no_packet[file_index] = 1;
3368             no_packet_count++;
3369             continue;
3370         }
3371         if (ret < 0) {
3372             input_files[file_index]->eof_reached = 1;
3373
3374             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3375                 ist = input_streams[input_files[file_index]->ist_index + i];
3376                 if (ist->decoding_needed)
3377                     output_packet(ist, NULL);
3378             }
3379
3380             if (opt_shortest)
3381                 break;
3382             else
3383                 continue;
3384         }
3385
3386         no_packet_count = 0;
3387         memset(no_packet, 0, nb_input_files);
3388
3389         if (do_pkt_dump) {
3390             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3391                              is->streams[pkt.stream_index]);
3392         }
3393         /* the following test is needed in case new streams appear
3394            dynamically in stream : we ignore them */
3395         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3396             goto discard_packet;
3397         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3398         ist = input_streams[ist_index];
3399         if (ist->discard)
3400             goto discard_packet;
3401
3402         if (pkt.dts != AV_NOPTS_VALUE)
3403             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3404         if (pkt.pts != AV_NOPTS_VALUE)
3405             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3406
3407         if (pkt.pts != AV_NOPTS_VALUE)
3408             pkt.pts *= ist->ts_scale;
3409         if (pkt.dts != AV_NOPTS_VALUE)
3410             pkt.dts *= ist->ts_scale;
3411
3412         if (debug_ts) {
3413             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3414                     "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",
3415                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3416                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3417                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3418                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3419                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3420                     input_files[ist->file_index]->ts_offset);
3421         }
3422
3423         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3424             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3425             int64_t delta   = pkt_dts - ist->next_dts;
3426             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3427             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3428                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3429                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3430                 pkt_dts+1<ist->pts){
3431                 input_files[ist->file_index]->ts_offset -= delta;
3432                 av_log(NULL, AV_LOG_DEBUG,
3433                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3434                        delta, input_files[ist->file_index]->ts_offset);
3435                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3436                 if (pkt.pts != AV_NOPTS_VALUE)
3437                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3438             }
3439             } else {
3440                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3441                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3442                      pkt_dts+1<ist->pts){
3443                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3444                     pkt.dts = AV_NOPTS_VALUE;
3445                 }
3446                 if (pkt.pts != AV_NOPTS_VALUE){
3447                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3448                     delta   = pkt_pts - ist->next_dts;
3449                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3450                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3451                         pkt_pts+1<ist->pts) {
3452                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3453                         pkt.pts = AV_NOPTS_VALUE;
3454                     }
3455                 }
3456             }
3457         }
3458
3459         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3460         if ((ret = output_packet(ist, &pkt)) < 0 ||
3461             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3462             char buf[128];
3463             av_strerror(ret, buf, sizeof(buf));
3464             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3465                    ist->file_index, ist->st->index, buf);
3466             if (exit_on_error)
3467                 exit_program(1);
3468             av_free_packet(&pkt);
3469             continue;
3470         }
3471
3472     discard_packet:
3473         av_free_packet(&pkt);
3474
3475         /* dump report by using the output first video and audio streams */
3476         print_report(0, timer_start, cur_time);
3477     }
3478
3479     /* at the end of stream, we must flush the decoder buffers */
3480     for (i = 0; i < nb_input_streams; i++) {
3481         ist = input_streams[i];
3482         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3483             output_packet(ist, NULL);
3484         }
3485     }
3486     poll_filters();
3487     flush_encoders();
3488
3489     term_exit();
3490
3491     /* write the trailer if needed and close file */
3492     for (i = 0; i < nb_output_files; i++) {
3493         os = output_files[i]->ctx;
3494         av_write_trailer(os);
3495     }
3496
3497     /* dump report by using the first video and audio streams */
3498     print_report(1, timer_start, av_gettime());
3499
3500     /* close each encoder */
3501     for (i = 0; i < nb_output_streams; i++) {
3502         ost = output_streams[i];
3503         if (ost->encoding_needed) {
3504             av_freep(&ost->st->codec->stats_in);
3505             avcodec_close(ost->st->codec);
3506         }
3507     }
3508
3509     /* close each decoder */
3510     for (i = 0; i < nb_input_streams; i++) {
3511         ist = input_streams[i];
3512         if (ist->decoding_needed) {
3513             avcodec_close(ist->st->codec);
3514         }
3515     }
3516
3517     /* finished ! */
3518     ret = 0;
3519
3520  fail:
3521     av_freep(&no_packet);
3522
3523     if (output_streams) {
3524         for (i = 0; i < nb_output_streams; i++) {
3525             ost = output_streams[i];
3526             if (ost) {
3527                 if (ost->stream_copy)
3528                     av_freep(&ost->st->codec->extradata);
3529                 if (ost->logfile) {
3530                     fclose(ost->logfile);
3531                     ost->logfile = NULL;
3532                 }
3533                 av_freep(&ost->st->codec->subtitle_header);
3534                 av_free(ost->forced_kf_pts);
3535                 av_dict_free(&ost->opts);
3536             }
3537         }
3538     }
3539     return ret;
3540 }
3541
3542 static int opt_frame_crop(const char *opt, const char *arg)
3543 {
3544     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3545     return AVERROR(EINVAL);
3546 }
3547
3548 static int opt_pad(const char *opt, const char *arg)
3549 {
3550     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3551     return -1;
3552 }
3553
3554 static int opt_video_channel(const char *opt, const char *arg)
3555 {
3556     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3557     return opt_default("channel", arg);
3558 }
3559
3560 static int opt_video_standard(const char *opt, const char *arg)
3561 {
3562     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3563     return opt_default("standard", arg);
3564 }
3565
3566 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3567 {
3568     audio_codec_name = arg;
3569     return parse_option(o, "codec:a", arg, options);
3570 }
3571
3572 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3573 {
3574     video_codec_name = arg;
3575     return parse_option(o, "codec:v", arg, options);
3576 }
3577
3578 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3579 {
3580     subtitle_codec_name = arg;
3581     return parse_option(o, "codec:s", arg, options);
3582 }
3583
3584 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3585 {
3586     return parse_option(o, "codec:d", arg, options);
3587 }
3588
3589 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3590 {
3591     StreamMap *m = NULL;
3592     int i, negative = 0, file_idx;
3593     int sync_file_idx = -1, sync_stream_idx = 0;
3594     char *p, *sync;
3595     char *map;
3596
3597     if (*arg == '-') {
3598         negative = 1;
3599         arg++;
3600     }
3601     map = av_strdup(arg);
3602
3603     /* parse sync stream first, just pick first matching stream */
3604     if (sync = strchr(map, ',')) {
3605         *sync = 0;
3606         sync_file_idx = strtol(sync + 1, &sync, 0);
3607         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3608             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3609             exit_program(1);
3610         }
3611         if (*sync)
3612             sync++;
3613         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3614             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3615                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3616                 sync_stream_idx = i;
3617                 break;
3618             }
3619         if (i == input_files[sync_file_idx]->nb_streams) {
3620             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3621                                        "match any streams.\n", arg);
3622             exit_program(1);
3623         }
3624     }
3625
3626
3627     if (map[0] == '[') {
3628         /* this mapping refers to lavfi output */
3629         const char *c = map + 1;
3630         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3631                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3632         m = &o->stream_maps[o->nb_stream_maps - 1];
3633         m->linklabel = av_get_token(&c, "]");
3634         if (!m->linklabel) {
3635             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3636             exit_program(1);
3637         }
3638     } else {
3639         file_idx = strtol(map, &p, 0);
3640         if (file_idx >= nb_input_files || file_idx < 0) {
3641             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3642             exit_program(1);
3643         }
3644         if (negative)
3645             /* disable some already defined maps */
3646             for (i = 0; i < o->nb_stream_maps; i++) {
3647                 m = &o->stream_maps[i];
3648                 if (file_idx == m->file_index &&
3649                     check_stream_specifier(input_files[m->file_index]->ctx,
3650                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3651                                            *p == ':' ? p + 1 : p) > 0)
3652                     m->disabled = 1;
3653             }
3654         else
3655             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3656                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3657                             *p == ':' ? p + 1 : p) <= 0)
3658                     continue;
3659                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3660                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3661                 m = &o->stream_maps[o->nb_stream_maps - 1];
3662
3663                 m->file_index   = file_idx;
3664                 m->stream_index = i;
3665
3666                 if (sync_file_idx >= 0) {
3667                     m->sync_file_index   = sync_file_idx;
3668                     m->sync_stream_index = sync_stream_idx;
3669                 } else {
3670                     m->sync_file_index   = file_idx;
3671                     m->sync_stream_index = i;
3672                 }
3673             }
3674     }
3675
3676     if (!m) {
3677         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3678         exit_program(1);
3679     }
3680
3681     av_freep(&map);
3682     return 0;
3683 }
3684
3685 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3686 {
3687     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3688                                 &o->nb_attachments, o->nb_attachments + 1);
3689     o->attachments[o->nb_attachments - 1] = arg;
3690     return 0;
3691 }
3692
3693 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3694 {
3695     int n;
3696     AVStream *st;
3697     AudioChannelMap *m;
3698
3699     o->audio_channel_maps =
3700         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3701                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3702     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3703
3704     /* muted channel syntax */
3705     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3706     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3707         m->file_idx = m->stream_idx = -1;
3708         if (n == 1)
3709             m->ofile_idx = m->ostream_idx = -1;
3710         return 0;
3711     }
3712
3713     /* normal syntax */
3714     n = sscanf(arg, "%d.%d.%d:%d.%d",
3715                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3716                &m->ofile_idx, &m->ostream_idx);
3717
3718     if (n != 3 && n != 5) {
3719         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3720                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3721         exit_program(1);
3722     }
3723
3724     if (n != 5) // only file.stream.channel specified
3725         m->ofile_idx = m->ostream_idx = -1;
3726
3727     /* check input */
3728     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3729         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3730                m->file_idx);
3731         exit_program(1);
3732     }
3733     if (m->stream_idx < 0 ||
3734         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3735         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3736                m->file_idx, m->stream_idx);
3737         exit_program(1);
3738     }
3739     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3740     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3741         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3742                m->file_idx, m->stream_idx);
3743         exit_program(1);
3744     }
3745     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3746         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3747                m->file_idx, m->stream_idx, m->channel_idx);
3748         exit_program(1);
3749     }
3750     return 0;
3751 }
3752
3753 /**
3754  * Parse a metadata specifier in arg.
3755  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3756  * @param index for type c/p, chapter/program index is written here
3757  * @param stream_spec for type s, the stream specifier is written here
3758  */
3759 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3760 {
3761     if (*arg) {
3762         *type = *arg;
3763         switch (*arg) {
3764         case 'g':
3765             break;
3766         case 's':
3767             if (*(++arg) && *arg != ':') {
3768                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3769                 exit_program(1);
3770             }
3771             *stream_spec = *arg == ':' ? arg + 1 : "";
3772             break;
3773         case 'c':
3774         case 'p':
3775             if (*(++arg) == ':')
3776                 *index = strtol(++arg, NULL, 0);
3777             break;
3778         default:
3779             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3780             exit_program(1);
3781         }
3782     } else
3783         *type = 'g';
3784 }
3785
3786 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3787 {
3788     AVDictionary **meta_in = NULL;
3789     AVDictionary **meta_out = NULL;
3790     int i, ret = 0;
3791     char type_in, type_out;
3792     const char *istream_spec = NULL, *ostream_spec = NULL;
3793     int idx_in = 0, idx_out = 0;
3794
3795     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3796     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3797
3798     if (!ic) {
3799         if (type_out == 'g' || !*outspec)
3800             o->metadata_global_manual = 1;
3801         if (type_out == 's' || !*outspec)
3802             o->metadata_streams_manual = 1;
3803         if (type_out == 'c' || !*outspec)
3804             o->metadata_chapters_manual = 1;
3805         return 0;
3806     }
3807
3808     if (type_in == 'g' || type_out == 'g')
3809         o->metadata_global_manual = 1;
3810     if (type_in == 's' || type_out == 's')
3811         o->metadata_streams_manual = 1;
3812     if (type_in == 'c' || type_out == 'c')
3813         o->metadata_chapters_manual = 1;
3814
3815 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3816     if ((index) < 0 || (index) >= (nb_elems)) {\
3817         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3818                 (desc), (index));\
3819         exit_program(1);\
3820     }
3821
3822 #define SET_DICT(type, meta, context, index)\
3823         switch (type) {\
3824         case 'g':\
3825             meta = &context->metadata;\
3826             break;\
3827         case 'c':\
3828             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3829             meta = &context->chapters[index]->metadata;\
3830             break;\
3831         case 'p':\
3832             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3833             meta = &context->programs[index]->metadata;\
3834             break;\
3835         }\
3836
3837     SET_DICT(type_in, meta_in, ic, idx_in);
3838     SET_DICT(type_out, meta_out, oc, idx_out);
3839
3840     /* for input streams choose first matching stream */
3841     if (type_in == 's') {
3842         for (i = 0; i < ic->nb_streams; i++) {
3843             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3844                 meta_in = &ic->streams[i]->metadata;
3845                 break;
3846             } else if (ret < 0)
3847                 exit_program(1);
3848         }
3849         if (!meta_in) {
3850             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3851             exit_program(1);
3852         }
3853     }
3854
3855     if (type_out == 's') {
3856         for (i = 0; i < oc->nb_streams; i++) {
3857             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3858                 meta_out = &oc->streams[i]->metadata;
3859                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3860             } else if (ret < 0)
3861                 exit_program(1);
3862         }
3863     } else
3864         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3865
3866     return 0;
3867 }
3868
3869 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3870 {
3871     char buf[128];
3872     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3873     struct tm time = *gmtime((time_t*)&recording_timestamp);
3874     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3875     parse_option(o, "metadata", buf, options);
3876
3877     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3878                                  "tag instead.\n", opt);
3879     return 0;
3880 }
3881
3882 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3883 {
3884     const char *codec_string = encoder ? "encoder" : "decoder";
3885     AVCodec *codec;
3886
3887     codec = encoder ?
3888         avcodec_find_encoder_by_name(name) :
3889         avcodec_find_decoder_by_name(name);
3890     if (!codec) {
3891         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3892         exit_program(1);
3893     }
3894     if (codec->type != type) {
3895         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3896         exit_program(1);
3897     }
3898     return codec;
3899 }
3900
3901 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3902 {
3903     char *codec_name = NULL;
3904
3905     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3906     if (codec_name) {
3907         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3908         st->codec->codec_id = codec->id;
3909         return codec;
3910     } else
3911         return avcodec_find_decoder(st->codec->codec_id);
3912 }
3913
3914 /**
3915  * Add all the streams from the given input file to the global
3916  * list of input streams.
3917  */
3918 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3919 {
3920     int i;
3921     char *next, *codec_tag = NULL;
3922
3923     for (i = 0; i < ic->nb_streams; i++) {
3924         AVStream *st = ic->streams[i];
3925         AVCodecContext *dec = st->codec;
3926         InputStream *ist = av_mallocz(sizeof(*ist));
3927         char *framerate = NULL;
3928
3929         if (!ist)
3930             exit_program(1);
3931
3932         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3933         input_streams[nb_input_streams - 1] = ist;
3934
3935         ist->st = st;
3936         ist->file_index = nb_input_files;
3937         ist->discard = 1;
3938         st->discard  = AVDISCARD_ALL;
3939         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3940
3941         ist->ts_scale = 1.0;
3942         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3943
3944         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3945         if (codec_tag) {
3946             uint32_t tag = strtol(codec_tag, &next, 0);
3947             if (*next)
3948                 tag = AV_RL32(codec_tag);
3949             st->codec->codec_tag = tag;
3950         }
3951
3952         ist->dec = choose_decoder(o, ic, st);
3953
3954         switch (dec->codec_type) {
3955         case AVMEDIA_TYPE_VIDEO:
3956             if(!ist->dec)
3957                 ist->dec = avcodec_find_decoder(dec->codec_id);
3958             if (dec->lowres) {
3959                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3960             }
3961
3962             ist->resample_height  = dec->height;
3963             ist->resample_width   = dec->width;
3964             ist->resample_pix_fmt = dec->pix_fmt;
3965
3966             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
3967             if (framerate && av_parse_video_rate(&ist->framerate,
3968                                                  framerate) < 0) {
3969                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
3970                        framerate);
3971                 exit_program(1);
3972             }
3973
3974             ist->top_field_first = -1;
3975             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
3976
3977             break;
3978         case AVMEDIA_TYPE_AUDIO:
3979             guess_input_channel_layout(ist);
3980
3981             ist->resample_sample_fmt     = dec->sample_fmt;
3982             ist->resample_sample_rate    = dec->sample_rate;
3983             ist->resample_channels       = dec->channels;
3984             ist->resample_channel_layout = dec->channel_layout;
3985
3986             break;
3987         case AVMEDIA_TYPE_DATA:
3988         case AVMEDIA_TYPE_SUBTITLE:
3989             if(!ist->dec)
3990                 ist->dec = avcodec_find_decoder(dec->codec_id);
3991             break;
3992         case AVMEDIA_TYPE_ATTACHMENT:
3993         case AVMEDIA_TYPE_UNKNOWN:
3994             break;
3995         default:
3996             abort();
3997         }
3998     }
3999 }
4000
4001 static void assert_file_overwrite(const char *filename)
4002 {
4003     if ((!file_overwrite || no_file_overwrite) &&
4004         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4005          av_strstart(filename, "file:", NULL))) {
4006         if (avio_check(filename, 0) == 0) {
4007             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4008                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4009                 fflush(stderr);
4010                 term_exit();
4011                 signal(SIGINT, SIG_DFL);
4012                 if (!read_yesno()) {
4013                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4014                     exit_program(1);
4015                 }
4016                 term_init();
4017             }
4018             else {
4019                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4020                 exit_program(1);
4021             }
4022         }
4023     }
4024 }
4025
4026 static void dump_attachment(AVStream *st, const char *filename)
4027 {
4028     int ret;
4029     AVIOContext *out = NULL;
4030     AVDictionaryEntry *e;
4031
4032     if (!st->codec->extradata_size) {
4033         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4034                nb_input_files - 1, st->index);
4035         return;
4036     }
4037     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4038         filename = e->value;
4039     if (!*filename) {
4040         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4041                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4042         exit_program(1);
4043     }
4044
4045     assert_file_overwrite(filename);
4046
4047     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4048         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4049                filename);
4050         exit_program(1);
4051     }
4052
4053     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4054     avio_flush(out);
4055     avio_close(out);
4056 }
4057
4058 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4059 {
4060     AVFormatContext *ic;
4061     AVInputFormat *file_iformat = NULL;
4062     int err, i, ret;
4063     int64_t timestamp;
4064     uint8_t buf[128];
4065     AVDictionary **opts;
4066     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4067
4068     if (o->format) {
4069         if (!(file_iformat = av_find_input_format(o->format))) {
4070             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4071             exit_program(1);
4072         }
4073     }
4074
4075     if (!strcmp(filename, "-"))
4076         filename = "pipe:";
4077
4078     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4079                     !strcmp(filename, "/dev/stdin");
4080
4081     /* get default parameters from command line */
4082     ic = avformat_alloc_context();
4083     if (!ic) {
4084         print_error(filename, AVERROR(ENOMEM));
4085         exit_program(1);
4086     }
4087     if (o->nb_audio_sample_rate) {
4088         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4089         av_dict_set(&format_opts, "sample_rate", buf, 0);
4090     }
4091     if (o->nb_audio_channels) {
4092         /* because we set audio_channels based on both the "ac" and
4093          * "channel_layout" options, we need to check that the specified
4094          * demuxer actually has the "channels" option before setting it */
4095         if (file_iformat && file_iformat->priv_class &&
4096             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4097                         AV_OPT_SEARCH_FAKE_OBJ)) {
4098             snprintf(buf, sizeof(buf), "%d",
4099                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4100             av_dict_set(&format_opts, "channels", buf, 0);
4101         }
4102     }
4103     if (o->nb_frame_rates) {
4104         /* set the format-level framerate option;
4105          * this is important for video grabbers, e.g. x11 */
4106         if (file_iformat && file_iformat->priv_class &&
4107             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4108                         AV_OPT_SEARCH_FAKE_OBJ)) {
4109             av_dict_set(&format_opts, "framerate",
4110                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4111         }
4112     }
4113     if (o->nb_frame_sizes) {
4114         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4115     }
4116     if (o->nb_frame_pix_fmts)
4117         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4118
4119     ic->video_codec_id   = video_codec_name ?
4120         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4121     ic->audio_codec_id   = audio_codec_name ?
4122         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4123     ic->subtitle_codec_id= subtitle_codec_name ?
4124         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4125     ic->flags |= AVFMT_FLAG_NONBLOCK;
4126     ic->interrupt_callback = int_cb;
4127
4128     /* open the input file with generic avformat function */
4129     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4130     if (err < 0) {
4131         print_error(filename, err);
4132         exit_program(1);
4133     }
4134     assert_avoptions(format_opts);
4135
4136     /* apply forced codec ids */
4137     for (i = 0; i < ic->nb_streams; i++)
4138         choose_decoder(o, ic, ic->streams[i]);
4139
4140     /* Set AVCodecContext options for avformat_find_stream_info */
4141     opts = setup_find_stream_info_opts(ic, codec_opts);
4142     orig_nb_streams = ic->nb_streams;
4143
4144     /* If not enough info to get the stream parameters, we decode the
4145        first frames to get it. (used in mpeg case for example) */
4146     ret = avformat_find_stream_info(ic, opts);
4147     if (ret < 0) {
4148         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4149         avformat_close_input(&ic);
4150         exit_program(1);
4151     }
4152
4153     timestamp = o->start_time;
4154     /* add the stream start time */
4155     if (ic->start_time != AV_NOPTS_VALUE)
4156         timestamp += ic->start_time;
4157
4158     /* if seeking requested, we execute it */
4159     if (o->start_time != 0) {
4160         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
4161         if (ret < 0) {
4162             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
4163                    filename, (double)timestamp / AV_TIME_BASE);
4164         }
4165     }
4166
4167     /* update the current parameters so that they match the one of the input stream */
4168     add_input_streams(o, ic);
4169
4170     /* dump the file content */
4171     av_dump_format(ic, nb_input_files, filename, 0);
4172
4173     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
4174     if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
4175         exit_program(1);
4176
4177     input_files[nb_input_files - 1]->ctx        = ic;
4178     input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
4179     input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
4180     input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
4181     input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
4182
4183     for (i = 0; i < o->nb_dump_attachment; i++) {
4184         int j;
4185
4186         for (j = 0; j < ic->nb_streams; j++) {
4187             AVStream *st = ic->streams[j];
4188
4189             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
4190                 dump_attachment(st, o->dump_attachment[i].u.str);
4191         }
4192     }
4193
4194     for (i = 0; i < orig_nb_streams; i++)
4195         av_dict_free(&opts[i]);
4196     av_freep(&opts);
4197
4198     reset_options(o, 1);
4199     return 0;
4200 }
4201
4202 static void parse_forced_key_frames(char *kf, OutputStream *ost)
4203 {
4204     char *p;
4205     int n = 1, i;
4206
4207     for (p = kf; *p; p++)
4208         if (*p == ',')
4209             n++;
4210     ost->forced_kf_count = n;
4211     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
4212     if (!ost->forced_kf_pts) {
4213         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
4214         exit_program(1);
4215     }
4216     p = kf;
4217     for (i = 0; i < n; i++) {
4218         char *next = strchr(p, ',');
4219         if (next) *next++ = 0;
4220         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
4221         p = next;
4222     }
4223 }
4224
4225 static uint8_t *get_line(AVIOContext *s)
4226 {
4227     AVIOContext *line;
4228     uint8_t *buf;
4229     char c;
4230
4231     if (avio_open_dyn_buf(&line) < 0) {
4232         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
4233         exit_program(1);
4234     }
4235
4236     while ((c = avio_r8(s)) && c != '\n')
4237         avio_w8(line, c);
4238     avio_w8(line, 0);
4239     avio_close_dyn_buf(line, &buf);
4240
4241     return buf;
4242 }
4243
4244 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
4245 {
4246     int i, ret = 1;
4247     char filename[1000];
4248     const char *base[3] = { getenv("AVCONV_DATADIR"),
4249                             getenv("HOME"),
4250                             AVCONV_DATADIR,
4251                             };
4252
4253     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
4254         if (!base[i])
4255             continue;
4256         if (codec_name) {
4257             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
4258                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
4259             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4260         }
4261         if (ret) {
4262             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
4263                      i != 1 ? "" : "/.avconv", preset_name);
4264             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4265         }
4266     }
4267     return ret;
4268 }
4269
4270 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
4271 {
4272     char *codec_name = NULL;
4273