ffmpeg: use isatty() before messing with the terminal state
[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 sar;
989     char args[255];
990     int pad_idx = in->pad_idx;
991     int ret;
992
993     sar = ist->st->sample_aspect_ratio.num ?
994           ist->st->sample_aspect_ratio :
995           ist->st->codec->sample_aspect_ratio;
996     snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
997              ist->st->codec->height, ist->st->codec->pix_fmt,
998              tb.num, tb.den, sar.num, sar.den,
999              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1000
1001     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
1002                                             args, NULL, fg->graph)) < 0)
1003         return ret;
1004
1005     if (ist->framerate.num) {
1006         AVFilterContext *setpts;
1007
1008         if ((ret = avfilter_graph_create_filter(&setpts,
1009                                                 avfilter_get_by_name("setpts"),
1010                                                 "setpts", "N", NULL,
1011                                                 fg->graph)) < 0)
1012             return ret;
1013
1014         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1015             return ret;
1016
1017         first_filter = setpts;
1018         pad_idx = 0;
1019     }
1020
1021     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1022         return ret;
1023     return 0;
1024 }
1025
1026 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1027                                         AVFilterInOut *in)
1028 {
1029     AVFilterContext *first_filter = in->filter_ctx;
1030     AVFilter *filter = avfilter_get_by_name("abuffer");
1031     InputStream *ist = ifilter->ist;
1032     int pad_idx = in->pad_idx;
1033     char args[255];
1034     int ret;
1035
1036     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1037              ":channel_layout=0x%"PRIx64,
1038              ist->st->time_base.num, ist->st->time_base.den,
1039              ist->st->codec->sample_rate,
1040              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1041              ist->st->codec->channel_layout);
1042
1043     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1044                                             in->name, args, NULL,
1045                                             fg->graph)) < 0)
1046         return ret;
1047
1048 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1049     AVFilterContext *filt_ctx;                                              \
1050                                                                             \
1051     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1052            "similarly to -af " filter_name "=%s.\n", arg);                  \
1053                                                                             \
1054     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1055                                        avfilter_get_by_name(filter_name),   \
1056                                        filter_name, arg, NULL, fg->graph);  \
1057     if (ret < 0)                                                            \
1058         return ret;                                                         \
1059                                                                             \
1060     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1061     if (ret < 0)                                                            \
1062         return ret;                                                         \
1063                                                                             \
1064     first_filter = filt_ctx;                                                  \
1065 } while (0)
1066
1067     if (audio_sync_method > 0) {
1068         char args[256] = {0};
1069
1070         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1071         if (audio_sync_method > 1)
1072             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1073         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1074     }
1075
1076 //     if (ost->audio_channels_mapped) {
1077 //         int i;
1078 //         AVBPrint pan_buf;
1079 //         av_bprint_init(&pan_buf, 256, 8192);
1080 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1081 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1082 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1083 //             if (ost->audio_channels_map[i] != -1)
1084 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1085 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1086 //         av_bprint_finalize(&pan_buf, NULL);
1087 //     }
1088
1089     if (audio_volume != 256) {
1090         char args[256];
1091
1092         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1093         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1094     }
1095     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1096         return ret;
1097
1098     return 0;
1099 }
1100
1101 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1102                                   AVFilterInOut *in)
1103 {
1104     av_freep(&ifilter->name);
1105     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1106
1107     switch (in->filter_ctx->input_pads[in->pad_idx].type) {
1108     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1109     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1110     default: av_assert0(0);
1111     }
1112 }
1113
1114 static int configure_filtergraph(FilterGraph *fg)
1115 {
1116     AVFilterInOut *inputs, *outputs, *cur;
1117     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1118     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1119                                       fg->graph_desc;
1120
1121     avfilter_graph_free(&fg->graph);
1122     if (!(fg->graph = avfilter_graph_alloc()))
1123         return AVERROR(ENOMEM);
1124
1125     if (simple) {
1126         OutputStream *ost = fg->outputs[0]->ost;
1127         char args[255];
1128         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1129         fg->graph->scale_sws_opts = av_strdup(args);
1130     }
1131
1132     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1133         return ret;
1134
1135     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1136         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1137                "exactly one input and output.\n", graph_desc);
1138         return AVERROR(EINVAL);
1139     }
1140
1141     for (cur = inputs; !simple && init && cur; cur = cur->next)
1142         init_input_filter(fg, cur);
1143
1144     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1145         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1146             return ret;
1147     avfilter_inout_free(&inputs);
1148
1149     if (!init || simple) {
1150         /* we already know the mappings between lavfi outputs and output streams,
1151          * so we can finish the setup */
1152         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1153             configure_output_filter(fg, fg->outputs[i], cur);
1154         avfilter_inout_free(&outputs);
1155
1156         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1157             return ret;
1158     } else {
1159         /* wait until output mappings are processed */
1160         for (cur = outputs; cur;) {
1161             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1162                                      &fg->nb_outputs, fg->nb_outputs + 1);
1163             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1164                 exit_program(1);
1165             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1166             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1167             cur = cur->next;
1168             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1169         }
1170     }
1171
1172     return 0;
1173 }
1174
1175 static int configure_complex_filters(void)
1176 {
1177     int i, ret = 0;
1178
1179     for (i = 0; i < nb_filtergraphs; i++)
1180         if (!filtergraphs[i]->graph &&
1181             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1182             return ret;
1183     return 0;
1184 }
1185
1186 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1187 {
1188     int i;
1189     for (i = 0; i < fg->nb_inputs; i++)
1190         if (fg->inputs[i]->ist == ist)
1191             return 1;
1192     return 0;
1193 }
1194
1195 static void term_exit(void)
1196 {
1197     av_log(NULL, AV_LOG_QUIET, "%s", "");
1198 #if HAVE_TERMIOS_H
1199     if(restore_tty)
1200         tcsetattr (0, TCSANOW, &oldtty);
1201 #endif
1202 }
1203
1204 static volatile int received_sigterm = 0;
1205
1206 static void sigterm_handler(int sig)
1207 {
1208     received_sigterm = sig;
1209     received_nb_signals++;
1210     term_exit();
1211     if(received_nb_signals > 3)
1212         exit(123);
1213 }
1214
1215 static void term_init(void)
1216 {
1217 #if HAVE_TERMIOS_H
1218     if(!run_as_daemon){
1219         struct termios tty;
1220 #if HAVE_ISATTY
1221         if(isatty(0) && isatty(2))
1222 #endif
1223         if (tcgetattr (0, &tty) == 0) {
1224             oldtty = tty;
1225             restore_tty = 1;
1226             atexit(term_exit);
1227
1228             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1229                              |INLCR|IGNCR|ICRNL|IXON);
1230             tty.c_oflag |= OPOST;
1231             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1232             tty.c_cflag &= ~(CSIZE|PARENB);
1233             tty.c_cflag |= CS8;
1234             tty.c_cc[VMIN] = 1;
1235             tty.c_cc[VTIME] = 0;
1236
1237             tcsetattr (0, TCSANOW, &tty);
1238         }
1239         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1240     }
1241 #endif
1242     avformat_network_deinit();
1243
1244     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1245     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1246 #ifdef SIGXCPU
1247     signal(SIGXCPU, sigterm_handler);
1248 #endif
1249 }
1250
1251 /* read a key without blocking */
1252 static int read_key(void)
1253 {
1254     unsigned char ch;
1255 #if HAVE_TERMIOS_H
1256     int n = 1;
1257     struct timeval tv;
1258     fd_set rfds;
1259
1260     FD_ZERO(&rfds);
1261     FD_SET(0, &rfds);
1262     tv.tv_sec = 0;
1263     tv.tv_usec = 0;
1264     n = select(1, &rfds, NULL, NULL, &tv);
1265     if (n > 0) {
1266         n = read(0, &ch, 1);
1267         if (n == 1)
1268             return ch;
1269
1270         return n;
1271     }
1272 #elif HAVE_KBHIT
1273 #    if HAVE_PEEKNAMEDPIPE
1274     static int is_pipe;
1275     static HANDLE input_handle;
1276     DWORD dw, nchars;
1277     if(!input_handle){
1278         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1279         is_pipe = !GetConsoleMode(input_handle, &dw);
1280     }
1281
1282     if (stdin->_cnt > 0) {
1283         read(0, &ch, 1);
1284         return ch;
1285     }
1286     if (is_pipe) {
1287         /* When running under a GUI, you will end here. */
1288         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1289             return -1;
1290         //Read it
1291         if(nchars != 0) {
1292             read(0, &ch, 1);
1293             return ch;
1294         }else{
1295             return -1;
1296         }
1297     }
1298 #    endif
1299     if(kbhit())
1300         return(getch());
1301 #endif
1302     return -1;
1303 }
1304
1305 static int decode_interrupt_cb(void *ctx)
1306 {
1307     return received_nb_signals > 1;
1308 }
1309
1310 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1311
1312 void av_noreturn exit_program(int ret)
1313 {
1314     int i, j;
1315
1316     for (i = 0; i < nb_filtergraphs; i++) {
1317         avfilter_graph_free(&filtergraphs[i]->graph);
1318         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1319             av_freep(&filtergraphs[i]->inputs[j]->name);
1320             av_freep(&filtergraphs[i]->inputs[j]);
1321         }
1322         av_freep(&filtergraphs[i]->inputs);
1323         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1324             av_freep(&filtergraphs[i]->outputs[j]->name);
1325             av_freep(&filtergraphs[i]->outputs[j]);
1326         }
1327         av_freep(&filtergraphs[i]->outputs);
1328         av_freep(&filtergraphs[i]);
1329     }
1330     av_freep(&filtergraphs);
1331
1332     /* close files */
1333     for (i = 0; i < nb_output_files; i++) {
1334         AVFormatContext *s = output_files[i]->ctx;
1335         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1336             avio_close(s->pb);
1337         avformat_free_context(s);
1338         av_dict_free(&output_files[i]->opts);
1339         av_freep(&output_files[i]);
1340     }
1341     for (i = 0; i < nb_output_streams; i++) {
1342         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1343         while (bsfc) {
1344             AVBitStreamFilterContext *next = bsfc->next;
1345             av_bitstream_filter_close(bsfc);
1346             bsfc = next;
1347         }
1348         output_streams[i]->bitstream_filters = NULL;
1349
1350         av_freep(&output_streams[i]->filtered_frame);
1351         av_freep(&output_streams[i]->avfilter);
1352         av_freep(&output_streams[i]);
1353     }
1354     for (i = 0; i < nb_input_files; i++) {
1355         avformat_close_input(&input_files[i]->ctx);
1356         av_freep(&input_files[i]);
1357     }
1358     for (i = 0; i < nb_input_streams; i++) {
1359         av_freep(&input_streams[i]->decoded_frame);
1360         av_dict_free(&input_streams[i]->opts);
1361         free_buffer_pool(&input_streams[i]->buffer_pool);
1362         av_freep(&input_streams[i]->filters);
1363         av_freep(&input_streams[i]);
1364     }
1365
1366     if (vstats_file)
1367         fclose(vstats_file);
1368     av_free(vstats_filename);
1369
1370     av_freep(&input_streams);
1371     av_freep(&input_files);
1372     av_freep(&output_streams);
1373     av_freep(&output_files);
1374
1375     uninit_opts();
1376
1377     avfilter_uninit();
1378     avformat_network_deinit();
1379
1380     if (received_sigterm) {
1381         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1382                (int) received_sigterm);
1383         exit (255);
1384     }
1385
1386     exit(ret);
1387 }
1388
1389 static void assert_avoptions(AVDictionary *m)
1390 {
1391     AVDictionaryEntry *t;
1392     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1393         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1394         exit_program(1);
1395     }
1396 }
1397
1398 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1399 {
1400     const char *codec_string = encoder ? "encoder" : "decoder";
1401     AVCodec *codec;
1402     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1403         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1404         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1405                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1406                 codec_string, c->codec->name);
1407         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1408         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1409             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1410                    codec_string, codec->name);
1411         exit_program(1);
1412     }
1413 }
1414
1415 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1416 {
1417     if (codec && codec->sample_fmts) {
1418         const enum AVSampleFormat *p = codec->sample_fmts;
1419         for (; *p != -1; p++) {
1420             if (*p == st->codec->sample_fmt)
1421                 break;
1422         }
1423         if (*p == -1) {
1424             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1425                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1426             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1427             av_log(NULL, AV_LOG_WARNING,
1428                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1429                    av_get_sample_fmt_name(st->codec->sample_fmt),
1430                    codec->name,
1431                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1432             st->codec->sample_fmt = codec->sample_fmts[0];
1433         }
1434     }
1435 }
1436
1437 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1438 {
1439     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1440     AVCodecContext          *avctx = ost->st->codec;
1441     int ret;
1442
1443     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1444         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1445         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1446
1447     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1448         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1449         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1450             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1451             pkt->pts = pkt->dts = max;
1452         }
1453     }
1454
1455     /*
1456      * Audio encoders may split the packets --  #frames in != #packets out.
1457      * But there is no reordering, so we can limit the number of output packets
1458      * by simply dropping them here.
1459      * Counting encoded video frames needs to be done separately because of
1460      * reordering, see do_video_out()
1461      */
1462     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1463         if (ost->frame_number >= ost->max_frames) {
1464             av_free_packet(pkt);
1465             return;
1466         }
1467         ost->frame_number++;
1468     }
1469
1470     while (bsfc) {
1471         AVPacket new_pkt = *pkt;
1472         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1473                                            &new_pkt.data, &new_pkt.size,
1474                                            pkt->data, pkt->size,
1475                                            pkt->flags & AV_PKT_FLAG_KEY);
1476         if (a > 0) {
1477             av_free_packet(pkt);
1478             new_pkt.destruct = av_destruct_packet;
1479         } else if (a < 0) {
1480             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1481                    bsfc->filter->name, pkt->stream_index,
1482                    avctx->codec ? avctx->codec->name : "copy");
1483             print_error("", a);
1484             if (exit_on_error)
1485                 exit_program(1);
1486         }
1487         *pkt = new_pkt;
1488
1489         bsfc = bsfc->next;
1490     }
1491
1492     pkt->stream_index = ost->index;
1493     ret = av_interleaved_write_frame(s, pkt);
1494     if (ret < 0) {
1495         print_error("av_interleaved_write_frame()", ret);
1496         exit_program(1);
1497     }
1498 }
1499
1500 static int check_recording_time(OutputStream *ost)
1501 {
1502     OutputFile *of = output_files[ost->file_index];
1503
1504     if (of->recording_time != INT64_MAX &&
1505         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1506                       AV_TIME_BASE_Q) >= 0) {
1507         ost->is_past_recording_time = 1;
1508         return 0;
1509     }
1510     return 1;
1511 }
1512
1513 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1514                          AVFrame *frame)
1515 {
1516     AVCodecContext *enc = ost->st->codec;
1517     AVPacket pkt;
1518     int got_packet = 0;
1519
1520     av_init_packet(&pkt);
1521     pkt.data = NULL;
1522     pkt.size = 0;
1523 #if 0
1524     if (!check_recording_time(ost))
1525         return;
1526 #endif
1527     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1528         frame->pts = ost->sync_opts;
1529     ost->sync_opts = frame->pts + frame->nb_samples;
1530
1531     av_assert0(pkt.size || !pkt.data);
1532     update_benchmark(NULL);
1533     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1534         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1535         exit_program(1);
1536     }
1537     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1538
1539     if (got_packet) {
1540         if (pkt.pts != AV_NOPTS_VALUE)
1541             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1542         if (pkt.dts != AV_NOPTS_VALUE)
1543             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1544         if (pkt.duration > 0)
1545             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1546
1547         if (debug_ts) {
1548             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1549                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1550                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1551                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1552         }
1553
1554         write_frame(s, &pkt, ost);
1555
1556         audio_size += pkt.size;
1557         av_free_packet(&pkt);
1558     }
1559 }
1560
1561 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1562 {
1563     AVCodecContext *dec;
1564     AVPicture *picture2;
1565     AVPicture picture_tmp;
1566     uint8_t *buf = 0;
1567
1568     dec = ist->st->codec;
1569
1570     /* deinterlace : must be done before any resize */
1571     if (do_deinterlace) {
1572         int size;
1573
1574         /* create temporary picture */
1575         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1576         buf  = av_malloc(size);
1577         if (!buf)
1578             return;
1579
1580         picture2 = &picture_tmp;
1581         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1582
1583         if (avpicture_deinterlace(picture2, picture,
1584                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1585             /* if error, do not deinterlace */
1586             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1587             av_free(buf);
1588             buf = NULL;
1589             picture2 = picture;
1590         }
1591     } else {
1592         picture2 = picture;
1593     }
1594
1595     if (picture != picture2)
1596         *picture = *picture2;
1597     *bufp = buf;
1598 }
1599
1600 static void do_subtitle_out(AVFormatContext *s,
1601                             OutputStream *ost,
1602                             InputStream *ist,
1603                             AVSubtitle *sub,
1604                             int64_t pts)
1605 {
1606     static uint8_t *subtitle_out = NULL;
1607     int subtitle_out_max_size = 1024 * 1024;
1608     int subtitle_out_size, nb, i;
1609     AVCodecContext *enc;
1610     AVPacket pkt;
1611
1612     if (pts == AV_NOPTS_VALUE) {
1613         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1614         if (exit_on_error)
1615             exit_program(1);
1616         return;
1617     }
1618
1619     enc = ost->st->codec;
1620
1621     if (!subtitle_out) {
1622         subtitle_out = av_malloc(subtitle_out_max_size);
1623     }
1624
1625     /* Note: DVB subtitle need one packet to draw them and one other
1626        packet to clear them */
1627     /* XXX: signal it in the codec context ? */
1628     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1629         nb = 2;
1630     else
1631         nb = 1;
1632
1633     for (i = 0; i < nb; i++) {
1634         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1635
1636         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1637         // start_display_time is required to be 0
1638         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1639         sub->end_display_time  -= sub->start_display_time;
1640         sub->start_display_time = 0;
1641         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1642                                                     subtitle_out_max_size, sub);
1643         if (subtitle_out_size < 0) {
1644             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1645             exit_program(1);
1646         }
1647
1648         av_init_packet(&pkt);
1649         pkt.data = subtitle_out;
1650         pkt.size = subtitle_out_size;
1651         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1652         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1653             /* XXX: the pts correction is handled here. Maybe handling
1654                it in the codec would be better */
1655             if (i == 0)
1656                 pkt.pts += 90 * sub->start_display_time;
1657             else
1658                 pkt.pts += 90 * sub->end_display_time;
1659         }
1660         write_frame(s, &pkt, ost);
1661     }
1662 }
1663
1664 static void do_video_out(AVFormatContext *s,
1665                          OutputStream *ost,
1666                          AVFrame *in_picture,
1667                          float quality)
1668 {
1669     int ret, format_video_sync;
1670     AVPacket pkt;
1671     AVCodecContext *enc = ost->st->codec;
1672     int nb_frames;
1673     double sync_ipts, delta;
1674     double duration = 0;
1675     int frame_size = 0;
1676     InputStream *ist = NULL;
1677
1678     if (ost->source_index >= 0)
1679         ist = input_streams[ost->source_index];
1680
1681     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1682         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1683
1684     sync_ipts = in_picture->pts;
1685     delta = sync_ipts - ost->sync_opts + duration;
1686
1687     /* by default, we output a single frame */
1688     nb_frames = 1;
1689
1690     format_video_sync = video_sync_method;
1691     if (format_video_sync == VSYNC_AUTO)
1692         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1693
1694     switch (format_video_sync) {
1695     case VSYNC_CFR:
1696         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1697         if (delta < -1.1)
1698             nb_frames = 0;
1699         else if (delta > 1.1)
1700             nb_frames = lrintf(delta);
1701         break;
1702     case VSYNC_VFR:
1703         if (delta <= -0.6)
1704             nb_frames = 0;
1705         else if (delta > 0.6)
1706             ost->sync_opts = lrint(sync_ipts);
1707         break;
1708     case VSYNC_DROP:
1709     case VSYNC_PASSTHROUGH:
1710         ost->sync_opts = lrint(sync_ipts);
1711         break;
1712     default:
1713         av_assert0(0);
1714     }
1715
1716     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1717     if (nb_frames == 0) {
1718         nb_frames_drop++;
1719         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1720         return;
1721     } else if (nb_frames > 1) {
1722         nb_frames_dup += nb_frames - 1;
1723         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1724     }
1725
1726
1727 duplicate_frame:
1728     av_init_packet(&pkt);
1729     pkt.data = NULL;
1730     pkt.size = 0;
1731
1732     in_picture->pts = ost->sync_opts;
1733
1734     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1735         enc->codec->id == CODEC_ID_RAWVIDEO) {
1736         /* raw pictures are written as AVPicture structure to
1737            avoid any copies. We support temporarily the older
1738            method. */
1739         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1740         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1741         pkt.data   = (uint8_t *)in_picture;
1742         pkt.size   =  sizeof(AVPicture);
1743         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1744         pkt.flags |= AV_PKT_FLAG_KEY;
1745
1746         write_frame(s, &pkt, ost);
1747     } else {
1748         int got_packet;
1749         AVFrame big_picture;
1750
1751         big_picture = *in_picture;
1752         /* better than nothing: use input picture interlaced
1753            settings */
1754         big_picture.interlaced_frame = in_picture->interlaced_frame;
1755         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1756             if (ost->top_field_first == -1)
1757                 big_picture.top_field_first = in_picture->top_field_first;
1758             else
1759                 big_picture.top_field_first = !!ost->top_field_first;
1760         }
1761
1762         /* handles same_quant here. This is not correct because it may
1763            not be a global option */
1764         big_picture.quality = quality;
1765         if (!enc->me_threshold)
1766             big_picture.pict_type = 0;
1767         if (ost->forced_kf_index < ost->forced_kf_count &&
1768             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1769             big_picture.pict_type = AV_PICTURE_TYPE_I;
1770             ost->forced_kf_index++;
1771         }
1772         update_benchmark(NULL);
1773         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1774         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1775         if (ret < 0) {
1776             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1777             exit_program(1);
1778         }
1779
1780         if (got_packet) {
1781             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1782                 pkt.pts = ost->sync_opts;
1783
1784             if (pkt.pts != AV_NOPTS_VALUE)
1785                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1786             if (pkt.dts != AV_NOPTS_VALUE)
1787                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1788
1789             if (debug_ts) {
1790                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1791                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1792                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1793                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1794             }
1795
1796             write_frame(s, &pkt, ost);
1797             frame_size = pkt.size;
1798             video_size += pkt.size;
1799             av_free_packet(&pkt);
1800
1801             /* if two pass, output log */
1802             if (ost->logfile && enc->stats_out) {
1803                 fprintf(ost->logfile, "%s", enc->stats_out);
1804             }
1805         }
1806     }
1807     ost->sync_opts++;
1808     /*
1809      * For video, number of frames in == number of packets out.
1810      * But there may be reordering, so we can't throw away frames on encoder
1811      * flush, we need to limit them here, before they go into encoder.
1812      */
1813     ost->frame_number++;
1814
1815     if(--nb_frames)
1816         goto duplicate_frame;
1817
1818     if (vstats_filename && frame_size)
1819         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1820 }
1821
1822 static double psnr(double d)
1823 {
1824     return -10.0 * log(d) / log(10.0);
1825 }
1826
1827 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1828                            int frame_size)
1829 {
1830     AVCodecContext *enc;
1831     int frame_number;
1832     double ti1, bitrate, avg_bitrate;
1833
1834     /* this is executed just the first time do_video_stats is called */
1835     if (!vstats_file) {
1836         vstats_file = fopen(vstats_filename, "w");
1837         if (!vstats_file) {
1838             perror("fopen");
1839             exit_program(1);
1840         }
1841     }
1842
1843     enc = ost->st->codec;
1844     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1845         frame_number = ost->frame_number;
1846         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1847         if (enc->flags&CODEC_FLAG_PSNR)
1848             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1849
1850         fprintf(vstats_file,"f_size= %6d ", frame_size);
1851         /* compute pts value */
1852         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1853         if (ti1 < 0.01)
1854             ti1 = 0.01;
1855
1856         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1857         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1858         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1859                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1860         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1861     }
1862 }
1863
1864 /* check for new output on any of the filtergraphs */
1865 static int poll_filters(void)
1866 {
1867     AVFilterBufferRef *picref;
1868     AVFrame *filtered_frame = NULL;
1869     int i, ret, ret_all;
1870     unsigned nb_success, nb_eof;
1871     int64_t frame_pts;
1872
1873     while (1) {
1874         /* Reap all buffers present in the buffer sinks */
1875         for (i = 0; i < nb_output_streams; i++) {
1876             OutputStream *ost = output_streams[i];
1877             OutputFile    *of = output_files[ost->file_index];
1878             int ret = 0;
1879
1880             if (!ost->filter)
1881                 continue;
1882
1883             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1884                 return AVERROR(ENOMEM);
1885             } else
1886                 avcodec_get_frame_defaults(ost->filtered_frame);
1887             filtered_frame = ost->filtered_frame;
1888
1889             while (!ost->is_past_recording_time) {
1890                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1891                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1892                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1893                                                     ost->st->codec->frame_size);
1894                 else
1895 #ifdef SINKA
1896                     ret = av_buffersink_read(ost->filter->filter, &picref);
1897 #else
1898                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1899                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1900 #endif
1901                 if (ret < 0) {
1902                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1903                         char buf[256];
1904                         av_strerror(ret, buf, sizeof(buf));
1905                         av_log(NULL, AV_LOG_WARNING,
1906                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1907                     }
1908                     break;
1909                 }
1910                 frame_pts = AV_NOPTS_VALUE;
1911                 if (picref->pts != AV_NOPTS_VALUE) {
1912                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1913                                                     ost->filter->filter->inputs[0]->time_base,
1914                                                     ost->st->codec->time_base) -
1915                                         av_rescale_q(of->start_time,
1916                                                     AV_TIME_BASE_Q,
1917                                                     ost->st->codec->time_base);
1918
1919                     if (of->start_time && filtered_frame->pts < 0) {
1920                         avfilter_unref_buffer(picref);
1921                         continue;
1922                     }
1923                 }
1924                 //if (ost->source_index >= 0)
1925                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1926
1927
1928                 switch (ost->filter->filter->inputs[0]->type) {
1929                 case AVMEDIA_TYPE_VIDEO:
1930                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1931                     filtered_frame->pts = frame_pts;
1932                     if (!ost->frame_aspect_ratio)
1933                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1934
1935                     do_video_out(of->ctx, ost, filtered_frame,
1936                                  same_quant ? ost->last_quality :
1937                                               ost->st->codec->global_quality);
1938                     break;
1939                 case AVMEDIA_TYPE_AUDIO:
1940                     avfilter_copy_buf_props(filtered_frame, picref);
1941                     filtered_frame->pts = frame_pts;
1942                     do_audio_out(of->ctx, ost, filtered_frame);
1943                     break;
1944                 default:
1945                     // TODO support subtitle filters
1946                     av_assert0(0);
1947                 }
1948
1949                 avfilter_unref_buffer(picref);
1950             }
1951         }
1952         /* Request frames through all the graphs */
1953         ret_all = nb_success = nb_eof = 0;
1954         for (i = 0; i < nb_filtergraphs; i++) {
1955             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1956             if (!ret) {
1957                 nb_success++;
1958             } else if (ret == AVERROR_EOF) {
1959                 nb_eof++;
1960             } else if (ret != AVERROR(EAGAIN)) {
1961                 char buf[256];
1962                 av_strerror(ret, buf, sizeof(buf));
1963                 av_log(NULL, AV_LOG_WARNING,
1964                        "Error in request_frame(): %s\n", buf);
1965                 ret_all = ret;
1966             }
1967         }
1968         if (!nb_success)
1969             break;
1970         /* Try again if anything succeeded */
1971     }
1972     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1973 }
1974
1975 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1976 {
1977     char buf[1024];
1978     OutputStream *ost;
1979     AVFormatContext *oc;
1980     int64_t total_size;
1981     AVCodecContext *enc;
1982     int frame_number, vid, i;
1983     double bitrate;
1984     int64_t pts = INT64_MAX;
1985     static int64_t last_time = -1;
1986     static int qp_histogram[52];
1987     int hours, mins, secs, us;
1988
1989     if (!print_stats && !is_last_report)
1990         return;
1991
1992     if (!is_last_report) {
1993         if (last_time == -1) {
1994             last_time = cur_time;
1995             return;
1996         }
1997         if ((cur_time - last_time) < 500000)
1998             return;
1999         last_time = cur_time;
2000     }
2001
2002
2003     oc = output_files[0]->ctx;
2004
2005     total_size = avio_size(oc->pb);
2006     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2007         total_size = avio_tell(oc->pb);
2008         if (total_size < 0)
2009             total_size = 0;
2010     }
2011
2012     buf[0] = '\0';
2013     vid = 0;
2014     for (i = 0; i < nb_output_streams; i++) {
2015         float q = -1;
2016         ost = output_streams[i];
2017         enc = ost->st->codec;
2018         if (!ost->stream_copy && enc->coded_frame)
2019             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2020         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2021             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2022         }
2023         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2024             float fps, t = (cur_time-timer_start) / 1000000.0;
2025
2026             frame_number = ost->frame_number;
2027             fps = t > 1 ? frame_number / t : 0;
2028             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2029                      frame_number, fps < 9.95, fps, q);
2030             if (is_last_report)
2031                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2032             if (qp_hist) {
2033                 int j;
2034                 int qp = lrintf(q);
2035                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2036                     qp_histogram[qp]++;
2037                 for (j = 0; j < 32; j++)
2038                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2039             }
2040             if (enc->flags&CODEC_FLAG_PSNR) {
2041                 int j;
2042                 double error, error_sum = 0;
2043                 double scale, scale_sum = 0;
2044                 char type[3] = { 'Y','U','V' };
2045                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2046                 for (j = 0; j < 3; j++) {
2047                     if (is_last_report) {
2048                         error = enc->error[j];
2049                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2050                     } else {
2051                         error = enc->coded_frame->error[j];
2052                         scale = enc->width * enc->height * 255.0 * 255.0;
2053                     }
2054                     if (j)
2055                         scale /= 4;
2056                     error_sum += error;
2057                     scale_sum += scale;
2058                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2059                 }
2060                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2061             }
2062             vid = 1;
2063         }
2064         /* compute min output value */
2065         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2066                                       ost->st->time_base, AV_TIME_BASE_Q));
2067     }
2068
2069     secs = pts / AV_TIME_BASE;
2070     us = pts % AV_TIME_BASE;
2071     mins = secs / 60;
2072     secs %= 60;
2073     hours = mins / 60;
2074     mins %= 60;
2075
2076     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2077
2078     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2079              "size=%8.0fkB time=", total_size / 1024.0);
2080     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2081              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2082              (100 * us) / AV_TIME_BASE);
2083     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2084              "bitrate=%6.1fkbits/s", bitrate);
2085
2086     if (nb_frames_dup || nb_frames_drop)
2087         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2088                 nb_frames_dup, nb_frames_drop);
2089
2090     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2091
2092     fflush(stderr);
2093
2094     if (is_last_report) {
2095         int64_t raw= audio_size + video_size + extra_size;
2096         av_log(NULL, AV_LOG_INFO, "\n");
2097         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2098                video_size / 1024.0,
2099                audio_size / 1024.0,
2100                extra_size / 1024.0,
2101                100.0 * (total_size - raw) / raw
2102         );
2103         if(video_size + audio_size + extra_size == 0){
2104             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2105         }
2106     }
2107 }
2108
2109 static void flush_encoders(void)
2110 {
2111     int i, ret;
2112
2113     for (i = 0; i < nb_output_streams; i++) {
2114         OutputStream   *ost = output_streams[i];
2115         AVCodecContext *enc = ost->st->codec;
2116         AVFormatContext *os = output_files[ost->file_index]->ctx;
2117         int stop_encoding = 0;
2118
2119         if (!ost->encoding_needed)
2120             continue;
2121
2122         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2123             continue;
2124         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2125             continue;
2126
2127         for (;;) {
2128             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2129             const char *desc;
2130             int64_t *size;
2131
2132             switch (ost->st->codec->codec_type) {
2133             case AVMEDIA_TYPE_AUDIO:
2134                 encode = avcodec_encode_audio2;
2135                 desc   = "Audio";
2136                 size   = &audio_size;
2137                 break;
2138             case AVMEDIA_TYPE_VIDEO:
2139                 encode = avcodec_encode_video2;
2140                 desc   = "Video";
2141                 size   = &video_size;
2142                 break;
2143             default:
2144                 stop_encoding = 1;
2145             }
2146
2147             if (encode) {
2148                 AVPacket pkt;
2149                 int got_packet;
2150                 av_init_packet(&pkt);
2151                 pkt.data = NULL;
2152                 pkt.size = 0;
2153
2154                 update_benchmark(NULL);
2155                 ret = encode(enc, &pkt, NULL, &got_packet);
2156                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2157                 if (ret < 0) {
2158                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2159                     exit_program(1);
2160                 }
2161                 *size += pkt.size;
2162                 if (ost->logfile && enc->stats_out) {
2163                     fprintf(ost->logfile, "%s", enc->stats_out);
2164                 }
2165                 if (!got_packet) {
2166                     stop_encoding = 1;
2167                     break;
2168                 }
2169                 if (pkt.pts != AV_NOPTS_VALUE)
2170                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2171                 if (pkt.dts != AV_NOPTS_VALUE)
2172                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2173                 write_frame(os, &pkt, ost);
2174             }
2175
2176             if (stop_encoding)
2177                 break;
2178         }
2179     }
2180 }
2181
2182 /*
2183  * Check whether a packet from ist should be written into ost at this time
2184  */
2185 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2186 {
2187     OutputFile *of = output_files[ost->file_index];
2188     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2189
2190     if (ost->source_index != ist_index)
2191         return 0;
2192
2193     if (of->start_time && ist->pts < of->start_time)
2194         return 0;
2195
2196     if (of->recording_time != INT64_MAX &&
2197         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2198                       (AVRational){ 1, 1000000 }) >= 0) {
2199         ost->is_past_recording_time = 1;
2200         return 0;
2201     }
2202
2203     return 1;
2204 }
2205
2206 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2207 {
2208     OutputFile *of = output_files[ost->file_index];
2209     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2210     AVPicture pict;
2211     AVPacket opkt;
2212
2213     av_init_packet(&opkt);
2214
2215     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2216         !ost->copy_initial_nonkeyframes)
2217         return;
2218
2219     /* force the input stream PTS */
2220     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2221         audio_size += pkt->size;
2222     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2223         video_size += pkt->size;
2224         ost->sync_opts++;
2225     }
2226
2227     if (pkt->pts != AV_NOPTS_VALUE)
2228         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2229     else
2230         opkt.pts = AV_NOPTS_VALUE;
2231
2232     if (pkt->dts == AV_NOPTS_VALUE)
2233         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2234     else
2235         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2236     opkt.dts -= ost_tb_start_time;
2237
2238     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2239     opkt.flags    = pkt->flags;
2240
2241     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2242     if (  ost->st->codec->codec_id != CODEC_ID_H264
2243        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2244        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2245        && ost->st->codec->codec_id != CODEC_ID_VC1
2246        ) {
2247         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2248             opkt.destruct = av_destruct_packet;
2249     } else {
2250         opkt.data = pkt->data;
2251         opkt.size = pkt->size;
2252     }
2253     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2254         /* store AVPicture in AVPacket, as expected by the output format */
2255         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2256         opkt.data = (uint8_t *)&pict;
2257         opkt.size = sizeof(AVPicture);
2258         opkt.flags |= AV_PKT_FLAG_KEY;
2259     }
2260
2261     write_frame(of->ctx, &opkt, ost);
2262     ost->st->codec->frame_number++;
2263     av_free_packet(&opkt);
2264 }
2265
2266 static void rate_emu_sleep(InputStream *ist)
2267 {
2268     if (input_files[ist->file_index]->rate_emu) {
2269         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2270         int64_t now = av_gettime() - ist->start;
2271         if (pts > now)
2272             usleep(pts - now);
2273     }
2274 }
2275
2276 static int guess_input_channel_layout(InputStream *ist)
2277 {
2278     AVCodecContext *dec = ist->st->codec;
2279
2280     if (!dec->channel_layout) {
2281         char layout_name[256];
2282
2283         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2284         if (!dec->channel_layout)
2285             return 0;
2286         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2287                                      dec->channels, dec->channel_layout);
2288         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2289                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2290     }
2291     return 1;
2292 }
2293
2294 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2295 {
2296     AVFrame *decoded_frame;
2297     AVCodecContext *avctx = ist->st->codec;
2298     int i, ret, resample_changed;
2299
2300     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2301         return AVERROR(ENOMEM);
2302     else
2303         avcodec_get_frame_defaults(ist->decoded_frame);
2304     decoded_frame = ist->decoded_frame;
2305
2306     update_benchmark(NULL);
2307     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2308     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2309     if (ret < 0) {
2310         return ret;
2311     }
2312     if (avctx->sample_rate <= 0) {
2313         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2314         return AVERROR_INVALIDDATA;
2315     }
2316
2317     if (!*got_output) {
2318         /* no audio frame */
2319         if (!pkt->size)
2320             for (i = 0; i < ist->nb_filters; i++)
2321                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2322                                      AV_BUFFERSRC_FLAG_NO_COPY);
2323         return ret;
2324     }
2325
2326     /* if the decoder provides a pts, use it instead of the last packet pts.
2327        the decoder could be delaying output by a packet or more. */
2328     if (decoded_frame->pts != AV_NOPTS_VALUE)
2329         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2330     else if (pkt->pts != AV_NOPTS_VALUE) {
2331         decoded_frame->pts = pkt->pts;
2332         pkt->pts           = AV_NOPTS_VALUE;
2333     }else
2334         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2335
2336
2337 #if 1
2338     /* increment next_dts to use for the case where the input stream does not
2339        have timestamps or there are multiple frames in the packet */
2340     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2341                      avctx->sample_rate;
2342     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2343                      avctx->sample_rate;
2344 #endif
2345
2346     rate_emu_sleep(ist);
2347
2348     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2349                        ist->resample_channels       != avctx->channels               ||
2350                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2351                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2352     if (resample_changed) {
2353         char layout1[64], layout2[64];
2354
2355         if (!guess_input_channel_layout(ist)) {
2356             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2357                    "layout for Input Stream #%d.%d\n", ist->file_index,
2358                    ist->st->index);
2359             exit_program(1);
2360         }
2361         decoded_frame->channel_layout = avctx->channel_layout;
2362
2363         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2364                                      ist->resample_channel_layout);
2365         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2366                                      decoded_frame->channel_layout);
2367
2368         av_log(NULL, AV_LOG_INFO,
2369                "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",
2370                ist->file_index, ist->st->index,
2371                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2372                ist->resample_channels, layout1,
2373                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2374                avctx->channels, layout2);
2375
2376         ist->resample_sample_fmt     = decoded_frame->format;
2377         ist->resample_sample_rate    = decoded_frame->sample_rate;
2378         ist->resample_channel_layout = decoded_frame->channel_layout;
2379         ist->resample_channels       = avctx->channels;
2380
2381         for (i = 0; i < nb_filtergraphs; i++)
2382             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2383                 configure_filtergraph(filtergraphs[i]) < 0) {
2384                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2385                 exit_program(1);
2386             }
2387     }
2388
2389     for (i = 0; i < ist->nb_filters; i++)
2390         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2391
2392     return ret;
2393 }
2394
2395 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2396 {
2397     AVFrame *decoded_frame;
2398     void *buffer_to_free = NULL;
2399     int i, ret = 0, resample_changed;
2400     int64_t best_effort_timestamp;
2401     AVRational *frame_sample_aspect;
2402     float quality;
2403
2404     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2405         return AVERROR(ENOMEM);
2406     else
2407         avcodec_get_frame_defaults(ist->decoded_frame);
2408     decoded_frame = ist->decoded_frame;
2409     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2410
2411     update_benchmark(NULL);
2412     ret = avcodec_decode_video2(ist->st->codec,
2413                                 decoded_frame, got_output, pkt);
2414     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2415     if (ret < 0)
2416         return ret;
2417
2418     quality = same_quant ? decoded_frame->quality : 0;
2419     if (!*got_output) {
2420         /* no picture yet */
2421         if (!pkt->size)
2422             for (i = 0; i < ist->nb_filters; i++)
2423                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2424         return ret;
2425     }
2426
2427     if(ist->top_field_first>=0)
2428         decoded_frame->top_field_first = ist->top_field_first;
2429
2430     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2431     if(best_effort_timestamp != AV_NOPTS_VALUE)
2432         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2433
2434     pkt->size = 0;
2435     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2436
2437     rate_emu_sleep(ist);
2438
2439     if (ist->st->sample_aspect_ratio.num)
2440         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2441
2442     resample_changed = ist->resample_width   != decoded_frame->width  ||
2443                        ist->resample_height  != decoded_frame->height ||
2444                        ist->resample_pix_fmt != decoded_frame->format;
2445     if (resample_changed) {
2446         av_log(NULL, AV_LOG_INFO,
2447                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2448                ist->file_index, ist->st->index,
2449                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2450                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2451
2452         ist->resample_width   = decoded_frame->width;
2453         ist->resample_height  = decoded_frame->height;
2454         ist->resample_pix_fmt = decoded_frame->format;
2455
2456         for (i = 0; i < nb_filtergraphs; i++)
2457             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2458                 configure_filtergraph(filtergraphs[i]) < 0) {
2459                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2460                 exit_program(1);
2461             }
2462     }
2463
2464     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2465     for (i = 0; i < ist->nb_filters; i++) {
2466         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2467                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2468                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2469         // XXX what an ugly hack
2470         if (ist->filters[i]->graph->nb_outputs == 1)
2471             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2472
2473         if (!frame_sample_aspect->num)
2474             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2475         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2476             FrameBuffer      *buf = decoded_frame->opaque;
2477             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2478                                         decoded_frame->data, decoded_frame->linesize,
2479                                         AV_PERM_READ | AV_PERM_PRESERVE,
2480                                         ist->st->codec->width, ist->st->codec->height,
2481                                         ist->st->codec->pix_fmt);
2482
2483             avfilter_copy_frame_props(fb, decoded_frame);
2484             fb->buf->priv           = buf;
2485             fb->buf->free           = filter_release_buffer;
2486
2487             av_assert0(buf->refcount>0);
2488             buf->refcount++;
2489             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2490                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2491                                  AV_BUFFERSRC_FLAG_NO_COPY);
2492         } else
2493         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2494             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2495             exit_program(1);
2496         }
2497
2498     }
2499
2500     av_free(buffer_to_free);
2501     return ret;
2502 }
2503
2504 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2505 {
2506     AVSubtitle subtitle;
2507     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2508                                           &subtitle, got_output, pkt);
2509     if (ret < 0)
2510         return ret;
2511     if (!*got_output)
2512         return ret;
2513
2514     rate_emu_sleep(ist);
2515
2516     for (i = 0; i < nb_output_streams; i++) {
2517         OutputStream *ost = output_streams[i];
2518
2519         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2520             continue;
2521
2522         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2523     }
2524
2525     avsubtitle_free(&subtitle);
2526     return ret;
2527 }
2528
2529 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2530 static int output_packet(InputStream *ist, const AVPacket *pkt)
2531 {
2532     int ret = 0, i;
2533     int got_output;
2534
2535     AVPacket avpkt;
2536     if (!ist->saw_first_ts) {
2537         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;
2538         ist->pts = 0;
2539         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2540             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2541             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2542         }
2543         ist->saw_first_ts = 1;
2544     }
2545
2546     if (ist->next_dts == AV_NOPTS_VALUE)
2547         ist->next_dts = ist->dts;
2548     if (ist->next_pts == AV_NOPTS_VALUE)
2549         ist->next_pts = ist->pts;
2550
2551     if (pkt == NULL) {
2552         /* EOF handling */
2553         av_init_packet(&avpkt);
2554         avpkt.data = NULL;
2555         avpkt.size = 0;
2556         goto handle_eof;
2557     } else {
2558         avpkt = *pkt;
2559     }
2560
2561     if (pkt->dts != AV_NOPTS_VALUE) {
2562         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2563         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2564             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2565     }
2566
2567     // while we have more to decode or while the decoder did output something on EOF
2568     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2569         int duration;
2570     handle_eof:
2571
2572         ist->pts = ist->next_pts;
2573         ist->dts = ist->next_dts;
2574
2575         if (avpkt.size && avpkt.size != pkt->size) {
2576             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2577                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2578             ist->showed_multi_packet_warning = 1;
2579         }
2580
2581         switch (ist->st->codec->codec_type) {
2582         case AVMEDIA_TYPE_AUDIO:
2583             ret = decode_audio    (ist, &avpkt, &got_output);
2584             break;
2585         case AVMEDIA_TYPE_VIDEO:
2586             ret = decode_video    (ist, &avpkt, &got_output);
2587             if (avpkt.duration) {
2588                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2589             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2590                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2591                 duration = ((int64_t)AV_TIME_BASE *
2592                                 ist->st->codec->time_base.num * ticks) /
2593                                 ist->st->codec->time_base.den;
2594             } else
2595                 duration = 0;
2596
2597             if(ist->dts != AV_NOPTS_VALUE && duration) {
2598                 ist->next_dts += duration;
2599             }else
2600                 ist->next_dts = AV_NOPTS_VALUE;
2601
2602             if (got_output)
2603                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2604             break;
2605         case AVMEDIA_TYPE_SUBTITLE:
2606             ret = transcode_subtitles(ist, &avpkt, &got_output);
2607             break;
2608         default:
2609             return -1;
2610         }
2611
2612         if (ret < 0)
2613             return ret;
2614
2615         avpkt.dts=
2616         avpkt.pts= AV_NOPTS_VALUE;
2617
2618         // touch data and size only if not EOF
2619         if (pkt) {
2620             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2621                 ret = avpkt.size;
2622             avpkt.data += ret;
2623             avpkt.size -= ret;
2624         }
2625         if (!got_output) {
2626             continue;
2627         }
2628     }
2629
2630     /* handle stream copy */
2631     if (!ist->decoding_needed) {
2632         rate_emu_sleep(ist);
2633         ist->dts = ist->next_dts;
2634         switch (ist->st->codec->codec_type) {
2635         case AVMEDIA_TYPE_AUDIO:
2636             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2637                              ist->st->codec->sample_rate;
2638             break;
2639         case AVMEDIA_TYPE_VIDEO:
2640             if (pkt->duration) {
2641                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2642             } else if(ist->st->codec->time_base.num != 0) {
2643                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2644                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2645                                   ist->st->codec->time_base.num * ticks) /
2646                                   ist->st->codec->time_base.den;
2647             }
2648             break;
2649         }
2650         ist->pts = ist->dts;
2651         ist->next_pts = ist->next_dts;
2652     }
2653     for (i = 0; pkt && i < nb_output_streams; i++) {
2654         OutputStream *ost = output_streams[i];
2655
2656         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2657             continue;
2658
2659         do_streamcopy(ist, ost, pkt);
2660     }
2661
2662     return 0;
2663 }
2664
2665 static void print_sdp(void)
2666 {
2667     char sdp[2048];
2668     int i;
2669     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2670
2671     if (!avc)
2672         exit_program(1);
2673     for (i = 0; i < nb_output_files; i++)
2674         avc[i] = output_files[i]->ctx;
2675
2676     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2677     printf("SDP:\n%s\n", sdp);
2678     fflush(stdout);
2679     av_freep(&avc);
2680 }
2681
2682 static int init_input_stream(int ist_index, char *error, int error_len)
2683 {
2684     InputStream *ist = input_streams[ist_index];
2685
2686     if (ist->decoding_needed) {
2687         AVCodec *codec = ist->dec;
2688         if (!codec) {
2689             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2690                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2691             return AVERROR(EINVAL);
2692         }
2693
2694         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2695         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2696             ist->st->codec->get_buffer     = codec_get_buffer;
2697             ist->st->codec->release_buffer = codec_release_buffer;
2698             ist->st->codec->opaque         = &ist->buffer_pool;
2699         }
2700
2701         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2702             av_dict_set(&ist->opts, "threads", "auto", 0);
2703         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2704             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2705                     ist->file_index, ist->st->index);
2706             return AVERROR(EINVAL);
2707         }
2708         assert_codec_experimental(ist->st->codec, 0);
2709         assert_avoptions(ist->opts);
2710     }
2711
2712     ist->next_pts = AV_NOPTS_VALUE;
2713     ist->next_dts = AV_NOPTS_VALUE;
2714     ist->is_start = 1;
2715
2716     return 0;
2717 }
2718
2719 static InputStream *get_input_stream(OutputStream *ost)
2720 {
2721     if (ost->source_index >= 0)
2722         return input_streams[ost->source_index];
2723
2724     if (ost->filter) {
2725         FilterGraph *fg = ost->filter->graph;
2726         int i;
2727
2728         for (i = 0; i < fg->nb_inputs; i++)
2729             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2730                 return fg->inputs[i]->ist;
2731     }
2732
2733     return NULL;
2734 }
2735
2736 static int transcode_init(void)
2737 {
2738     int ret = 0, i, j, k;
2739     AVFormatContext *oc;
2740     AVCodecContext *codec, *icodec;
2741     OutputStream *ost;
2742     InputStream *ist;
2743     char error[1024];
2744     int want_sdp = 1;
2745
2746     /* init framerate emulation */
2747     for (i = 0; i < nb_input_files; i++) {
2748         InputFile *ifile = input_files[i];
2749         if (ifile->rate_emu)
2750             for (j = 0; j < ifile->nb_streams; j++)
2751                 input_streams[j + ifile->ist_index]->start = av_gettime();
2752     }
2753
2754     /* output stream init */
2755     for (i = 0; i < nb_output_files; i++) {
2756         oc = output_files[i]->ctx;
2757         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2758             av_dump_format(oc, i, oc->filename, 1);
2759             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2760             return AVERROR(EINVAL);
2761         }
2762     }
2763
2764     /* init complex filtergraphs */
2765     for (i = 0; i < nb_filtergraphs; i++)
2766         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2767             return ret;
2768
2769     /* for each output stream, we compute the right encoding parameters */
2770     for (i = 0; i < nb_output_streams; i++) {
2771         ost = output_streams[i];
2772         oc  = output_files[ost->file_index]->ctx;
2773         ist = get_input_stream(ost);
2774
2775         if (ost->attachment_filename)
2776             continue;
2777
2778         codec  = ost->st->codec;
2779
2780         if (ist) {
2781             icodec = ist->st->codec;
2782
2783             ost->st->disposition          = ist->st->disposition;
2784             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2785             codec->chroma_sample_location = icodec->chroma_sample_location;
2786         }
2787
2788         if (ost->stream_copy) {
2789             uint64_t extra_size;
2790
2791             av_assert0(ist && !ost->filter);
2792
2793             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2794
2795             if (extra_size > INT_MAX) {
2796                 return AVERROR(EINVAL);
2797             }
2798
2799             /* if stream_copy is selected, no need to decode or encode */
2800             codec->codec_id   = icodec->codec_id;
2801             codec->codec_type = icodec->codec_type;
2802
2803             if (!codec->codec_tag) {
2804                 if (!oc->oformat->codec_tag ||
2805                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2806                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2807                     codec->codec_tag = icodec->codec_tag;
2808             }
2809
2810             codec->bit_rate       = icodec->bit_rate;
2811             codec->rc_max_rate    = icodec->rc_max_rate;
2812             codec->rc_buffer_size = icodec->rc_buffer_size;
2813             codec->field_order    = icodec->field_order;
2814             codec->extradata      = av_mallocz(extra_size);
2815             if (!codec->extradata) {
2816                 return AVERROR(ENOMEM);
2817             }
2818             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2819             codec->extradata_size= icodec->extradata_size;
2820             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2821
2822             codec->time_base = ist->st->time_base;
2823             /*
2824              * Avi is a special case here because it supports variable fps but
2825              * having the fps and timebase differe significantly adds quite some
2826              * overhead
2827              */
2828             if(!strcmp(oc->oformat->name, "avi")) {
2829                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2830                                  && av_q2d(ist->st->time_base) < 1.0/500
2831                     || copy_tb==0){
2832                     codec->time_base = icodec->time_base;
2833                     codec->time_base.num *= icodec->ticks_per_frame;
2834                     codec->time_base.den *= 2;
2835                     codec->ticks_per_frame = 2;
2836                 }
2837             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2838                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2839                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2840             ) {
2841                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2842                                 && av_q2d(ist->st->time_base) < 1.0/500
2843                    || copy_tb==0){
2844                     codec->time_base = icodec->time_base;
2845                     codec->time_base.num *= icodec->ticks_per_frame;
2846                 }
2847             }
2848             av_reduce(&codec->time_base.num, &codec->time_base.den,
2849                         codec->time_base.num, codec->time_base.den, INT_MAX);
2850
2851             switch (codec->codec_type) {
2852             case AVMEDIA_TYPE_AUDIO:
2853                 if (audio_volume != 256) {
2854                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2855                     exit_program(1);
2856                 }
2857                 codec->channel_layout     = icodec->channel_layout;
2858                 codec->sample_rate        = icodec->sample_rate;
2859                 codec->channels           = icodec->channels;
2860                 codec->frame_size         = icodec->frame_size;
2861                 codec->audio_service_type = icodec->audio_service_type;
2862                 codec->block_align        = icodec->block_align;
2863                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2864                     codec->block_align= 0;
2865                 if(codec->codec_id == CODEC_ID_AC3)
2866                     codec->block_align= 0;
2867                 break;
2868             case AVMEDIA_TYPE_VIDEO:
2869                 codec->pix_fmt            = icodec->pix_fmt;
2870                 codec->width              = icodec->width;
2871                 codec->height             = icodec->height;
2872                 codec->has_b_frames       = icodec->has_b_frames;
2873                 if (!codec->sample_aspect_ratio.num) {
2874                     codec->sample_aspect_ratio   =
2875                     ost->st->sample_aspect_ratio =
2876                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2877                         ist->st->codec->sample_aspect_ratio.num ?
2878                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2879                 }
2880                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2881                 break;
2882             case AVMEDIA_TYPE_SUBTITLE:
2883                 codec->width  = icodec->width;
2884                 codec->height = icodec->height;
2885                 break;
2886             case AVMEDIA_TYPE_DATA:
2887             case AVMEDIA_TYPE_ATTACHMENT:
2888                 break;
2889             default:
2890                 abort();
2891             }
2892         } else {
2893             if (!ost->enc)
2894                 ost->enc = avcodec_find_encoder(codec->codec_id);
2895             if (!ost->enc) {
2896                 /* should only happen when a default codec is not present. */
2897                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2898                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2899                 ret = AVERROR(EINVAL);
2900                 goto dump_format;
2901             }
2902
2903             if (ist)
2904                 ist->decoding_needed = 1;
2905             ost->encoding_needed = 1;
2906
2907             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2908                 if (ist && !ost->frame_rate.num)
2909                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2910                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2911                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2912                     ost->frame_rate = ost->enc->supported_framerates[idx];
2913                 }
2914             }
2915
2916             if (!ost->filter &&
2917                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2918                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2919                     FilterGraph *fg;
2920                     fg = init_simple_filtergraph(ist, ost);
2921                     if (configure_filtergraph(fg)) {
2922                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2923                         exit(1);
2924                     }
2925             }
2926
2927             switch (codec->codec_type) {
2928             case AVMEDIA_TYPE_AUDIO:
2929                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2930                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2931                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2932                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2933                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2934                 break;
2935             case AVMEDIA_TYPE_VIDEO:
2936                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2937                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2938                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2939                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2940                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2941                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2942                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2943                 }
2944                 for (j = 0; j < ost->forced_kf_count; j++)
2945                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2946                                                          AV_TIME_BASE_Q,
2947                                                          codec->time_base);
2948
2949                 codec->width  = ost->filter->filter->inputs[0]->w;
2950                 codec->height = ost->filter->filter->inputs[0]->h;
2951                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2952                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2953                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2954                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2955                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2956
2957                 if (!icodec ||
2958                     codec->width   != icodec->width  ||
2959                     codec->height  != icodec->height ||
2960                     codec->pix_fmt != icodec->pix_fmt) {
2961                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2962                 }
2963
2964                 break;
2965             case AVMEDIA_TYPE_SUBTITLE:
2966                 codec->time_base = (AVRational){1, 1000};
2967                 break;
2968             default:
2969                 abort();
2970                 break;
2971             }
2972             /* two pass mode */
2973             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2974                 char logfilename[1024];
2975                 FILE *f;
2976
2977                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2978                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2979                          i);
2980                 if (!strcmp(ost->enc->name, "libx264")) {
2981                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2982                 } else {
2983                     if (codec->flags & CODEC_FLAG_PASS2) {
2984                         char  *logbuffer;
2985                         size_t logbuffer_size;
2986                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2987                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2988                                    logfilename);
2989                             exit_program(1);
2990                         }
2991                         codec->stats_in = logbuffer;
2992                     }
2993                     if (codec->flags & CODEC_FLAG_PASS1) {
2994                         f = fopen(logfilename, "wb");
2995                         if (!f) {
2996                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2997                                 logfilename, strerror(errno));
2998                             exit_program(1);
2999                         }
3000                         ost->logfile = f;
3001                     }
3002                 }
3003             }
3004         }
3005     }
3006
3007     /* open each encoder */
3008     for (i = 0; i < nb_output_streams; i++) {
3009         ost = output_streams[i];
3010         if (ost->encoding_needed) {
3011             AVCodec      *codec = ost->enc;
3012             AVCodecContext *dec = NULL;
3013
3014             if ((ist = get_input_stream(ost)))
3015                 dec = ist->st->codec;
3016             if (dec && dec->subtitle_header) {
3017                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3018                 if (!ost->st->codec->subtitle_header) {
3019                     ret = AVERROR(ENOMEM);
3020                     goto dump_format;
3021                 }
3022                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3023                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3024             }
3025             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3026                 av_dict_set(&ost->opts, "threads", "auto", 0);
3027             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3028                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3029                         ost->file_index, ost->index);
3030                 ret = AVERROR(EINVAL);
3031                 goto dump_format;
3032             }
3033             assert_codec_experimental(ost->st->codec, 1);
3034             assert_avoptions(ost->opts);
3035             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3036                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3037                                              " It takes bits/s as argument, not kbits/s\n");
3038             extra_size += ost->st->codec->extradata_size;
3039
3040             if (ost->st->codec->me_threshold)
3041                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3042         }
3043     }
3044
3045     /* init input streams */
3046     for (i = 0; i < nb_input_streams; i++)
3047         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3048             goto dump_format;
3049
3050     /* discard unused programs */
3051     for (i = 0; i < nb_input_files; i++) {
3052         InputFile *ifile = input_files[i];
3053         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3054             AVProgram *p = ifile->ctx->programs[j];
3055             int discard  = AVDISCARD_ALL;
3056
3057             for (k = 0; k < p->nb_stream_indexes; k++)
3058                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3059                     discard = AVDISCARD_DEFAULT;
3060                     break;
3061                 }
3062             p->discard = discard;
3063         }
3064     }
3065
3066     /* open files and write file headers */
3067     for (i = 0; i < nb_output_files; i++) {
3068         oc = output_files[i]->ctx;
3069         oc->interrupt_callback = int_cb;
3070         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3071             char errbuf[128];
3072             const char *errbuf_ptr = errbuf;
3073             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3074                 errbuf_ptr = strerror(AVUNERROR(ret));
3075             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3076             ret = AVERROR(EINVAL);
3077             goto dump_format;
3078         }
3079 //         assert_avoptions(output_files[i]->opts);
3080         if (strcmp(oc->oformat->name, "rtp")) {
3081             want_sdp = 0;
3082         }
3083     }
3084
3085  dump_format:
3086     /* dump the file output parameters - cannot be done before in case
3087        of stream copy */
3088     for (i = 0; i < nb_output_files; i++) {
3089         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3090     }
3091
3092     /* dump the stream mapping */
3093     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3094     for (i = 0; i < nb_input_streams; i++) {
3095         ist = input_streams[i];
3096
3097         for (j = 0; j < ist->nb_filters; j++) {
3098             if (ist->filters[j]->graph->graph_desc) {
3099                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3100                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3101                        ist->filters[j]->name);
3102                 if (nb_filtergraphs > 1)
3103                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3104                 av_log(NULL, AV_LOG_INFO, "\n");
3105             }
3106         }
3107     }
3108
3109     for (i = 0; i < nb_output_streams; i++) {
3110         ost = output_streams[i];
3111
3112         if (ost->attachment_filename) {
3113             /* an attached file */
3114             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3115                    ost->attachment_filename, ost->file_index, ost->index);
3116             continue;
3117         }
3118
3119         if (ost->filter && ost->filter->graph->graph_desc) {
3120             /* output from a complex graph */
3121             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3122             if (nb_filtergraphs > 1)
3123                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3124
3125             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3126                    ost->index, ost->enc ? ost->enc->name : "?");
3127             continue;
3128         }
3129
3130         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3131                input_streams[ost->source_index]->file_index,
3132                input_streams[ost->source_index]->st->index,
3133                ost->file_index,
3134                ost->index);
3135         if (ost->sync_ist != input_streams[ost->source_index])
3136             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3137                    ost->sync_ist->file_index,
3138                    ost->sync_ist->st->index);
3139         if (ost->stream_copy)
3140             av_log(NULL, AV_LOG_INFO, " (copy)");
3141         else
3142             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3143                    input_streams[ost->source_index]->dec->name : "?",
3144                    ost->enc ? ost->enc->name : "?");
3145         av_log(NULL, AV_LOG_INFO, "\n");
3146     }
3147
3148     if (ret) {
3149         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3150         return ret;
3151     }
3152
3153     if (want_sdp) {
3154         print_sdp();
3155     }
3156
3157     return 0;
3158 }
3159
3160 /**
3161  * @return 1 if there are still streams where more output is wanted,
3162  *         0 otherwise
3163  */
3164 static int need_output(void)
3165 {
3166     int i;
3167
3168     for (i = 0; i < nb_output_streams; i++) {
3169         OutputStream *ost    = output_streams[i];
3170         OutputFile *of       = output_files[ost->file_index];
3171         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3172
3173         if (ost->is_past_recording_time ||
3174             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3175             continue;
3176         if (ost->frame_number >= ost->max_frames) {
3177             int j;
3178             for (j = 0; j < of->ctx->nb_streams; j++)
3179                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3180             continue;
3181         }
3182
3183         return 1;
3184     }
3185
3186     return 0;
3187 }
3188
3189 static int select_input_file(uint8_t *no_packet)
3190 {
3191     int64_t ipts_min = INT64_MAX;
3192     int i, file_index = -1;
3193
3194     for (i = 0; i < nb_input_streams; i++) {
3195         InputStream *ist = input_streams[i];
3196         int64_t ipts     = ist->pts;
3197
3198         if (ist->discard || no_packet[ist->file_index])
3199             continue;
3200         if (!input_files[ist->file_index]->eof_reached) {
3201             if (ipts < ipts_min) {
3202                 ipts_min = ipts;
3203                 file_index = ist->file_index;
3204             }
3205         }
3206     }
3207
3208     return file_index;
3209 }
3210
3211 /*
3212  * The following code is the main loop of the file converter
3213  */
3214 static int transcode(void)
3215 {
3216     int ret, i;
3217     AVFormatContext *is, *os;
3218     OutputStream *ost;
3219     InputStream *ist;
3220     uint8_t *no_packet;
3221     int no_packet_count = 0;
3222     int64_t timer_start;
3223     int key;
3224
3225     if (!(no_packet = av_mallocz(nb_input_files)))
3226         exit_program(1);
3227
3228     ret = transcode_init();
3229     if (ret < 0)
3230         goto fail;
3231
3232     if (!using_stdin) {
3233         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3234     }
3235
3236     timer_start = av_gettime();
3237
3238     for (; received_sigterm == 0;) {
3239         int file_index, ist_index;
3240         AVPacket pkt;
3241         int64_t cur_time= av_gettime();
3242
3243         /* if 'q' pressed, exits */
3244         if (!using_stdin) {
3245             static int64_t last_time;
3246             if (received_nb_signals)
3247                 break;
3248             /* read_key() returns 0 on EOF */
3249             if(cur_time - last_time >= 100000 && !run_as_daemon){
3250                 key =  read_key();
3251                 last_time = cur_time;
3252             }else
3253                 key = -1;
3254             if (key == 'q')
3255                 break;
3256             if (key == '+') av_log_set_level(av_log_get_level()+10);
3257             if (key == '-') av_log_set_level(av_log_get_level()-10);
3258             if (key == 's') qp_hist     ^= 1;
3259             if (key == 'h'){
3260                 if (do_hex_dump){
3261                     do_hex_dump = do_pkt_dump = 0;
3262                 } else if(do_pkt_dump){
3263                     do_hex_dump = 1;
3264                 } else
3265                     do_pkt_dump = 1;
3266                 av_log_set_level(AV_LOG_DEBUG);
3267             }
3268             if (key == 'c' || key == 'C'){
3269                 char buf[4096], target[64], command[256], arg[256] = {0};
3270                 double time;
3271                 int k, n = 0;
3272                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3273                 i = 0;
3274                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3275                     if (k > 0)
3276                         buf[i++] = k;
3277                 buf[i] = 0;
3278                 if (k > 0 &&
3279                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3280                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3281                            target, time, command, arg);
3282                     for (i = 0; i < nb_filtergraphs; i++) {
3283                         FilterGraph *fg = filtergraphs[i];
3284                         if (fg->graph) {
3285                             if (time < 0) {
3286                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3287                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3288                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3289                             } else {
3290                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3291                             }
3292                         }
3293                     }
3294                 } else {
3295                     av_log(NULL, AV_LOG_ERROR,
3296                            "Parse error, at least 3 arguments were expected, "
3297                            "only %d given in string '%s'\n", n, buf);
3298                 }
3299             }
3300             if (key == 'd' || key == 'D'){
3301                 int debug=0;
3302                 if(key == 'D') {
3303                     debug = input_streams[0]->st->codec->debug<<1;
3304                     if(!debug) debug = 1;
3305                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3306                         debug += debug;
3307                 }else
3308                     if(scanf("%d", &debug)!=1)
3309                         fprintf(stderr,"error parsing debug value\n");
3310                 for(i=0;i<nb_input_streams;i++) {
3311                     input_streams[i]->st->codec->debug = debug;
3312                 }
3313                 for(i=0;i<nb_output_streams;i++) {
3314                     ost = output_streams[i];
3315                     ost->st->codec->debug = debug;
3316                 }
3317                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3318                 fprintf(stderr,"debug=%d\n", debug);
3319             }
3320             if (key == '?'){
3321                 fprintf(stderr, "key    function\n"
3322                                 "?      show this help\n"
3323                                 "+      increase verbosity\n"
3324                                 "-      decrease verbosity\n"
3325                                 "c      Send command to filtergraph\n"
3326                                 "D      cycle through available debug modes\n"
3327                                 "h      dump packets/hex press to cycle through the 3 states\n"
3328                                 "q      quit\n"
3329                                 "s      Show QP histogram\n"
3330                 );
3331             }
3332         }
3333
3334         /* check if there's any stream where output is still needed */
3335         if (!need_output()) {
3336             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3337             break;
3338         }
3339
3340         /* select the stream that we must read now */
3341         file_index = select_input_file(no_packet);
3342         /* if none, if is finished */
3343         if (file_index < 0) {
3344             if (no_packet_count) {
3345                 no_packet_count = 0;
3346                 memset(no_packet, 0, nb_input_files);
3347                 usleep(10000);
3348                 continue;
3349             }
3350             break;
3351         }
3352
3353         /* read a frame from it and output it in the fifo */
3354         is  = input_files[file_index]->ctx;
3355         ret = av_read_frame(is, &pkt);
3356         if (ret == AVERROR(EAGAIN)) {
3357             no_packet[file_index] = 1;
3358             no_packet_count++;
3359             continue;
3360         }
3361         if (ret < 0) {
3362             input_files[file_index]->eof_reached = 1;
3363
3364             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3365                 ist = input_streams[input_files[file_index]->ist_index + i];
3366                 if (ist->decoding_needed)
3367                     output_packet(ist, NULL);
3368             }
3369
3370             if (opt_shortest)
3371                 break;
3372             else
3373                 continue;
3374         }
3375
3376         no_packet_count = 0;
3377         memset(no_packet, 0, nb_input_files);
3378
3379         if (do_pkt_dump) {
3380             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3381                              is->streams[pkt.stream_index]);
3382         }
3383         /* the following test is needed in case new streams appear
3384            dynamically in stream : we ignore them */
3385         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3386             goto discard_packet;
3387         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3388         ist = input_streams[ist_index];
3389         if (ist->discard)
3390             goto discard_packet;
3391
3392         if (pkt.dts != AV_NOPTS_VALUE)
3393             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3394         if (pkt.pts != AV_NOPTS_VALUE)
3395             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3396
3397         if (pkt.pts != AV_NOPTS_VALUE)
3398             pkt.pts *= ist->ts_scale;
3399         if (pkt.dts != AV_NOPTS_VALUE)
3400             pkt.dts *= ist->ts_scale;
3401
3402         if (debug_ts) {
3403             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3404                     "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",
3405                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3406                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3407                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3408                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3409                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3410                     input_files[ist->file_index]->ts_offset);
3411         }
3412
3413         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3414             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3415             int64_t delta   = pkt_dts - ist->next_dts;
3416             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3417             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3418                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3419                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3420                 pkt_dts+1<ist->pts){
3421                 input_files[ist->file_index]->ts_offset -= delta;
3422                 av_log(NULL, AV_LOG_DEBUG,
3423                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3424                        delta, input_files[ist->file_index]->ts_offset);
3425                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3426                 if (pkt.pts != AV_NOPTS_VALUE)
3427                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3428             }
3429             } else {
3430                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3431                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3432                      pkt_dts+1<ist->pts){
3433                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3434                     pkt.dts = AV_NOPTS_VALUE;
3435                 }
3436                 if (pkt.pts != AV_NOPTS_VALUE){
3437                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3438                     delta   = pkt_pts - ist->next_dts;
3439                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3440                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3441                         pkt_pts+1<ist->pts) {
3442                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3443                         pkt.pts = AV_NOPTS_VALUE;
3444                     }
3445                 }
3446             }
3447         }
3448
3449         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3450         if ((ret = output_packet(ist, &pkt)) < 0 ||
3451             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3452             char buf[128];
3453             av_strerror(ret, buf, sizeof(buf));
3454             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3455                    ist->file_index, ist->st->index, buf);
3456             if (exit_on_error)
3457                 exit_program(1);
3458             av_free_packet(&pkt);
3459             continue;
3460         }
3461
3462     discard_packet:
3463         av_free_packet(&pkt);
3464
3465         /* dump report by using the output first video and audio streams */
3466         print_report(0, timer_start, cur_time);
3467     }
3468
3469     /* at the end of stream, we must flush the decoder buffers */
3470     for (i = 0; i < nb_input_streams; i++) {
3471         ist = input_streams[i];
3472         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3473             output_packet(ist, NULL);
3474         }
3475     }
3476     poll_filters();
3477     flush_encoders();
3478
3479     term_exit();
3480
3481     /* write the trailer if needed and close file */
3482     for (i = 0; i < nb_output_files; i++) {
3483         os = output_files[i]->ctx;
3484         av_write_trailer(os);
3485     }
3486
3487     /* dump report by using the first video and audio streams */
3488     print_report(1, timer_start, av_gettime());
3489
3490     /* close each encoder */
3491     for (i = 0; i < nb_output_streams; i++) {
3492         ost = output_streams[i];
3493         if (ost->encoding_needed) {
3494             av_freep(&ost->st->codec->stats_in);
3495             avcodec_close(ost->st->codec);
3496         }
3497     }
3498
3499     /* close each decoder */
3500     for (i = 0; i < nb_input_streams; i++) {
3501         ist = input_streams[i];
3502         if (ist->decoding_needed) {
3503             avcodec_close(ist->st->codec);
3504         }
3505     }
3506
3507     /* finished ! */
3508     ret = 0;
3509
3510  fail:
3511     av_freep(&no_packet);
3512
3513     if (output_streams) {
3514         for (i = 0; i < nb_output_streams; i++) {
3515             ost = output_streams[i];
3516             if (ost) {
3517                 if (ost->stream_copy)
3518                     av_freep(&ost->st->codec->extradata);
3519                 if (ost->logfile) {
3520                     fclose(ost->logfile);
3521                     ost->logfile = NULL;
3522                 }
3523                 av_freep(&ost->st->codec->subtitle_header);
3524                 av_free(ost->forced_kf_pts);
3525                 av_dict_free(&ost->opts);
3526             }
3527         }
3528     }
3529     return ret;
3530 }
3531
3532 static int opt_frame_crop(const char *opt, const char *arg)
3533 {
3534     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3535     return AVERROR(EINVAL);
3536 }
3537
3538 static int opt_pad(const char *opt, const char *arg)
3539 {
3540     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3541     return -1;
3542 }
3543
3544 static int opt_video_channel(const char *opt, const char *arg)
3545 {
3546     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3547     return opt_default("channel", arg);
3548 }
3549
3550 static int opt_video_standard(const char *opt, const char *arg)
3551 {
3552     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3553     return opt_default("standard", arg);
3554 }
3555
3556 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3557 {
3558     audio_codec_name = arg;
3559     return parse_option(o, "codec:a", arg, options);
3560 }
3561
3562 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3563 {
3564     video_codec_name = arg;
3565     return parse_option(o, "codec:v", arg, options);
3566 }
3567
3568 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3569 {
3570     subtitle_codec_name = arg;
3571     return parse_option(o, "codec:s", arg, options);
3572 }
3573
3574 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3575 {
3576     return parse_option(o, "codec:d", arg, options);
3577 }
3578
3579 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3580 {
3581     StreamMap *m = NULL;
3582     int i, negative = 0, file_idx;
3583     int sync_file_idx = -1, sync_stream_idx = 0;
3584     char *p, *sync;
3585     char *map;
3586
3587     if (*arg == '-') {
3588         negative = 1;
3589         arg++;
3590     }
3591     map = av_strdup(arg);
3592
3593     /* parse sync stream first, just pick first matching stream */
3594     if (sync = strchr(map, ',')) {
3595         *sync = 0;
3596         sync_file_idx = strtol(sync + 1, &sync, 0);
3597         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3598             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3599             exit_program(1);
3600         }
3601         if (*sync)
3602             sync++;
3603         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3604             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3605                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3606                 sync_stream_idx = i;
3607                 break;
3608             }
3609         if (i == input_files[sync_file_idx]->nb_streams) {
3610             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3611                                        "match any streams.\n", arg);
3612             exit_program(1);
3613         }
3614     }
3615
3616
3617     if (map[0] == '[') {
3618         /* this mapping refers to lavfi output */
3619         const char *c = map + 1;
3620         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3621                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3622         m = &o->stream_maps[o->nb_stream_maps - 1];
3623         m->linklabel = av_get_token(&c, "]");
3624         if (!m->linklabel) {
3625             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3626             exit_program(1);
3627         }
3628     } else {
3629         file_idx = strtol(map, &p, 0);
3630         if (file_idx >= nb_input_files || file_idx < 0) {
3631             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3632             exit_program(1);
3633         }
3634         if (negative)
3635             /* disable some already defined maps */
3636             for (i = 0; i < o->nb_stream_maps; i++) {
3637                 m = &o->stream_maps[i];
3638                 if (file_idx == m->file_index &&
3639                     check_stream_specifier(input_files[m->file_index]->ctx,
3640                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3641                                            *p == ':' ? p + 1 : p) > 0)
3642                     m->disabled = 1;
3643             }
3644         else
3645             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3646                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3647                             *p == ':' ? p + 1 : p) <= 0)
3648                     continue;
3649                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3650                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3651                 m = &o->stream_maps[o->nb_stream_maps - 1];
3652
3653                 m->file_index   = file_idx;
3654                 m->stream_index = i;
3655
3656                 if (sync_file_idx >= 0) {
3657                     m->sync_file_index   = sync_file_idx;
3658                     m->sync_stream_index = sync_stream_idx;
3659                 } else {
3660                     m->sync_file_index   = file_idx;
3661                     m->sync_stream_index = i;
3662                 }
3663             }
3664     }
3665
3666     if (!m) {
3667         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3668         exit_program(1);
3669     }
3670
3671     av_freep(&map);
3672     return 0;
3673 }
3674
3675 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3676 {
3677     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3678                                 &o->nb_attachments, o->nb_attachments + 1);
3679     o->attachments[o->nb_attachments - 1] = arg;
3680     return 0;
3681 }
3682
3683 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3684 {
3685     int n;
3686     AVStream *st;
3687     AudioChannelMap *m;
3688
3689     o->audio_channel_maps =
3690         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3691                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3692     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3693
3694     /* muted channel syntax */
3695     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3696     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3697         m->file_idx = m->stream_idx = -1;
3698         if (n == 1)
3699             m->ofile_idx = m->ostream_idx = -1;
3700         return 0;
3701     }
3702
3703     /* normal syntax */
3704     n = sscanf(arg, "%d.%d.%d:%d.%d",
3705                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3706                &m->ofile_idx, &m->ostream_idx);
3707
3708     if (n != 3 && n != 5) {
3709         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3710                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3711         exit_program(1);
3712     }
3713
3714     if (n != 5) // only file.stream.channel specified
3715         m->ofile_idx = m->ostream_idx = -1;
3716
3717     /* check input */
3718     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3719         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3720                m->file_idx);
3721         exit_program(1);
3722     }
3723     if (m->stream_idx < 0 ||
3724         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3725         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3726                m->file_idx, m->stream_idx);
3727         exit_program(1);
3728     }
3729     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3730     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3731         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3732                m->file_idx, m->stream_idx);
3733         exit_program(1);
3734     }
3735     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3736         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3737                m->file_idx, m->stream_idx, m->channel_idx);
3738         exit_program(1);
3739     }
3740     return 0;
3741 }
3742
3743 /**
3744  * Parse a metadata specifier in arg.
3745  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3746  * @param index for type c/p, chapter/program index is written here
3747  * @param stream_spec for type s, the stream specifier is written here
3748  */
3749 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3750 {
3751     if (*arg) {
3752         *type = *arg;
3753         switch (*arg) {
3754         case 'g':
3755             break;
3756         case 's':
3757             if (*(++arg) && *arg != ':') {
3758                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3759                 exit_program(1);
3760             }
3761             *stream_spec = *arg == ':' ? arg + 1 : "";
3762             break;
3763         case 'c':
3764         case 'p':
3765             if (*(++arg) == ':')
3766                 *index = strtol(++arg, NULL, 0);
3767             break;
3768         default:
3769             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3770             exit_program(1);
3771         }
3772     } else
3773         *type = 'g';
3774 }
3775
3776 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3777 {
3778     AVDictionary **meta_in = NULL;
3779     AVDictionary **meta_out = NULL;
3780     int i, ret = 0;
3781     char type_in, type_out;
3782     const char *istream_spec = NULL, *ostream_spec = NULL;
3783     int idx_in = 0, idx_out = 0;
3784
3785     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3786     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3787
3788     if (!ic) {
3789         if (type_out == 'g' || !*outspec)
3790             o->metadata_global_manual = 1;
3791         if (type_out == 's' || !*outspec)
3792             o->metadata_streams_manual = 1;
3793         if (type_out == 'c' || !*outspec)
3794             o->metadata_chapters_manual = 1;
3795         return 0;
3796     }
3797
3798     if (type_in == 'g' || type_out == 'g')
3799         o->metadata_global_manual = 1;
3800     if (type_in == 's' || type_out == 's')
3801         o->metadata_streams_manual = 1;
3802     if (type_in == 'c' || type_out == 'c')
3803         o->metadata_chapters_manual = 1;
3804
3805 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3806     if ((index) < 0 || (index) >= (nb_elems)) {\
3807         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3808                 (desc), (index));\
3809         exit_program(1);\
3810     }
3811
3812 #define SET_DICT(type, meta, context, index)\
3813         switch (type) {\
3814         case 'g':\
3815             meta = &context->metadata;\
3816             break;\
3817         case 'c':\
3818             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3819             meta = &context->chapters[index]->metadata;\
3820             break;\
3821         case 'p':\
3822             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3823             meta = &context->programs[index]->metadata;\
3824             break;\
3825         }\
3826
3827     SET_DICT(type_in, meta_in, ic, idx_in);
3828     SET_DICT(type_out, meta_out, oc, idx_out);
3829
3830     /* for input streams choose first matching stream */
3831     if (type_in == 's') {
3832         for (i = 0; i < ic->nb_streams; i++) {
3833             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3834                 meta_in = &ic->streams[i]->metadata;
3835                 break;
3836             } else if (ret < 0)
3837                 exit_program(1);
3838         }
3839         if (!meta_in) {
3840             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3841             exit_program(1);
3842         }
3843     }
3844
3845     if (type_out == 's') {
3846         for (i = 0; i < oc->nb_streams; i++) {
3847             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3848                 meta_out = &oc->streams[i]->metadata;
3849                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3850             } else if (ret < 0)
3851                 exit_program(1);
3852         }
3853     } else
3854         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3855
3856     return 0;
3857 }
3858
3859 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3860 {
3861     char buf[128];
3862     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3863     struct tm time = *gmtime((time_t*)&recording_timestamp);
3864     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3865     parse_option(o, "metadata", buf, options);
3866
3867     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3868                                  "tag instead.\n", opt);
3869     return 0;
3870 }
3871
3872 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3873 {
3874     const char *codec_string = encoder ? "encoder" : "decoder";
3875     AVCodec *codec;
3876
3877     codec = encoder ?
3878         avcodec_find_encoder_by_name(name) :
3879         avcodec_find_decoder_by_name(name);
3880     if (!codec) {
3881         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3882         exit_program(1);
3883     }
3884     if (codec->type != type) {
3885         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3886         exit_program(1);
3887     }
3888     return codec;
3889 }
3890
3891 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3892 {
3893     char *codec_name = NULL;
3894
3895     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3896     if (codec_name) {
3897         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3898         st->codec->codec_id = codec->id;
3899         return codec;
3900     } else
3901         return avcodec_find_decoder(st->codec->codec_id);
3902 }
3903
3904 /**
3905  * Add all the streams from the given input file to the global
3906  * list of input streams.
3907  */
3908 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3909 {
3910     int i;
3911     char *next, *codec_tag = NULL;
3912
3913     for (i = 0; i < ic->nb_streams; i++) {
3914         AVStream *st = ic->streams[i];
3915         AVCodecContext *dec = st->codec;
3916         InputStream *ist = av_mallocz(sizeof(*ist));
3917         char *framerate = NULL;
3918
3919         if (!ist)
3920             exit_program(1);
3921
3922         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3923         input_streams[nb_input_streams - 1] = ist;
3924
3925         ist->st = st;
3926         ist->file_index = nb_input_files;
3927         ist->discard = 1;
3928         st->discard  = AVDISCARD_ALL;
3929         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3930
3931         ist->ts_scale = 1.0;
3932         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3933
3934         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3935         if (codec_tag) {
3936             uint32_t tag = strtol(codec_tag, &next, 0);
3937             if (*next)
3938                 tag = AV_RL32(codec_tag);
3939             st->codec->codec_tag = tag;
3940         }
3941
3942         ist->dec = choose_decoder(o, ic, st);
3943
3944         switch (dec->codec_type) {
3945         case AVMEDIA_TYPE_VIDEO:
3946             if(!ist->dec)
3947                 ist->dec = avcodec_find_decoder(dec->codec_id);
3948             if (dec->lowres) {
3949                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3950             }
3951
3952             ist->resample_height  = dec->height;
3953             ist->resample_width   = dec->width;
3954             ist->resample_pix_fmt = dec->pix_fmt;
3955
3956             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
3957             if (framerate && av_parse_video_rate(&ist->framerate,
3958                                                  framerate) < 0) {
3959                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
3960                        framerate);
3961                 exit_program(1);
3962             }
3963
3964             ist->top_field_first = -1;
3965             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
3966
3967             break;
3968         case AVMEDIA_TYPE_AUDIO:
3969             guess_input_channel_layout(ist);
3970
3971             ist->resample_sample_fmt     = dec->sample_fmt;
3972             ist->resample_sample_rate    = dec->sample_rate;
3973             ist->resample_channels       = dec->channels;
3974             ist->resample_channel_layout = dec->channel_layout;
3975
3976             break;
3977         case AVMEDIA_TYPE_DATA:
3978         case AVMEDIA_TYPE_SUBTITLE:
3979             if(!ist->dec)
3980                 ist->dec = avcodec_find_decoder(dec->codec_id);
3981             break;
3982         case AVMEDIA_TYPE_ATTACHMENT:
3983         case AVMEDIA_TYPE_UNKNOWN:
3984             break;
3985         default:
3986             abort();
3987         }
3988     }
3989 }
3990
3991 static void assert_file_overwrite(const char *filename)
3992 {
3993     if ((!file_overwrite || no_file_overwrite) &&
3994         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3995          av_strstart(filename, "file:", NULL))) {
3996         if (avio_check(filename, 0) == 0) {
3997             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3998                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3999                 fflush(stderr);
4000                 term_exit();
4001                 signal(SIGINT, SIG_DFL);
4002                 if (!read_yesno()) {
4003                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4004                     exit_program(1);
4005                 }
4006                 term_init();
4007             }
4008             else {
4009                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4010                 exit_program(1);
4011             }
4012         }
4013     }
4014 }
4015
4016 static void dump_attachment(AVStream *st, const char *filename)
4017 {
4018     int ret;
4019     AVIOContext *out = NULL;
4020     AVDictionaryEntry *e;
4021
4022     if (!st->codec->extradata_size) {
4023         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4024                nb_input_files - 1, st->index);
4025         return;
4026     }
4027     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4028         filename = e->value;
4029     if (!*filename) {
4030         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4031                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4032         exit_program(1);
4033     }
4034
4035     assert_file_overwrite(filename);
4036
4037     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4038         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4039                filename);
4040         exit_program(1);
4041     }
4042
4043     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4044     avio_flush(out);
4045     avio_close(out);
4046 }
4047
4048 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4049 {
4050     AVFormatContext *ic;
4051     AVInputFormat *file_iformat = NULL;
4052     int err, i, ret;
4053     int64_t timestamp;
4054     uint8_t buf[128];
4055     AVDictionary **opts;
4056     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4057
4058     if (o->format) {
4059         if (!(file_iformat = av_find_input_format(o->format))) {
4060             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4061             exit_program(1);
4062         }
4063     }
4064
4065     if (!strcmp(filename, "-"))
4066         filename = "pipe:";
4067
4068     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4069                     !strcmp(filename, "/dev/stdin");
4070
4071     /* get default parameters from command line */
4072     ic = avformat_alloc_context();
4073     if (!ic) {
4074         print_error(filename, AVERROR(ENOMEM));
4075         exit_program(1);
4076     }
4077     if (o->nb_audio_sample_rate) {
4078         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4079         av_dict_set(&format_opts, "sample_rate", buf, 0);
4080     }
4081     if (o->nb_audio_channels) {
4082         /* because we set audio_channels based on both the "ac" and
4083          * "channel_layout" options, we need to check that the specified
4084          * demuxer actually has the "channels" option before setting it */
4085         if (file_iformat && file_iformat->priv_class &&
4086             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4087                         AV_OPT_SEARCH_FAKE_OBJ)) {
4088             snprintf(buf, sizeof(buf), "%d",
4089                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4090             av_dict_set(&format_opts, "channels", buf, 0);
4091         }
4092     }
4093     if (o->nb_frame_rates) {
4094         /* set the format-level framerate option;
4095          * this is important for video grabbers, e.g. x11 */
4096         if (file_iformat && file_iformat->priv_class &&
4097             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4098                         AV_OPT_SEARCH_FAKE_OBJ)) {
4099             av_dict_set(&format_opts, "framerate",
4100                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4101         }
4102     }
4103     if (o->nb_frame_sizes) {
4104         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4105     }
4106     if (o->nb_frame_pix_fmts)
4107         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4108
4109     ic->video_codec_id   = video_codec_name ?
4110         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4111     ic->audio_codec_id   = audio_codec_name ?
4112         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4113     ic->subtitle_codec_id= subtitle_codec_name ?
4114         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4115     ic->flags |= AVFMT_FLAG_NONBLOCK;
4116     ic->interrupt_callback = int_cb;
4117
4118     /* open the input file with generic avformat function */
4119     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4120     if (err < 0) {
4121         print_error(filename, err);
4122         exit_program(1);
4123     }
4124     assert_avoptions(format_opts);
4125
4126     /* apply forced codec ids */
4127     for (i = 0; i < ic->nb_streams; i++)
4128         choose_decoder(o, ic, ic->streams[i]);
4129
4130     /* Set AVCodecContext options for avformat_find_stream_info */
4131     opts = setup_find_stream_info_opts(ic, codec_opts);
4132     orig_nb_streams = ic->nb_streams;
4133
4134     /* If not enough info to get the stream parameters, we decode the
4135        first frames to get it. (used in mpeg case for example) */
4136     ret = avformat_find_stream_info(ic, opts);
4137     if (ret < 0) {
4138         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4139         avformat_close_input(&ic);
4140         exit_program(1);
4141     }
4142
4143     timestamp = o->start_time;
4144     /* add the stream start time */
4145     if (ic->start_time != AV_NOPTS_VALUE)
4146         timestamp += ic->start_time;
4147
4148     /* if seeking requested, we execute it */
4149     if (o->start_time != 0) {
4150         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
4151         if (ret < 0) {
4152             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
4153                    filename, (double)timestamp / AV_TIME_BASE);
4154         }
4155     }
4156
4157     /* update the current parameters so that they match the one of the input stream */
4158     add_input_streams(o, ic);
4159
4160     /* dump the file content */
4161     av_dump_format(ic, nb_input_files, filename, 0);
4162
4163     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
4164     if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
4165         exit_program(1);
4166
4167     input_files[nb_input_files - 1]->ctx        = ic;
4168     input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
4169     input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
4170     input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
4171     input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
4172
4173     for (i = 0; i < o->nb_dump_attachment; i++) {
4174         int j;
4175
4176         for (j = 0; j < ic->nb_streams; j++) {
4177             AVStream *st = ic->streams[j];
4178
4179             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
4180                 dump_attachment(st, o->dump_attachment[i].u.str);
4181         }
4182     }
4183
4184     for (i = 0; i < orig_nb_streams; i++)
4185         av_dict_free(&opts[i]);
4186     av_freep(&opts);
4187
4188     reset_options(o, 1);
4189     return 0;
4190 }
4191
4192 static void parse_forced_key_frames(char *kf, OutputStream *ost)
4193 {
4194     char *p;
4195     int n = 1, i;
4196
4197     for (p = kf; *p; p++)
4198         if (*p == ',')
4199             n++;
4200     ost->forced_kf_count = n;
4201     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
4202     if (!ost->forced_kf_pts) {
4203         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
4204         exit_program(1);
4205     }
4206     p = kf;
4207     for (i = 0; i < n; i++) {
4208         char *next = strchr(p, ',');
4209         if (next) *next++ = 0;
4210         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
4211         p = next;
4212     }
4213 }
4214
4215 static uint8_t *get_line(AVIOContext *s)
4216 {
4217     AVIOContext *line;
4218     uint8_t *buf;
4219     char c;
4220
4221     if (avio_open_dyn_buf(&line) < 0) {
4222         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
4223         exit_program(1);
4224     }
4225
4226     while ((c = avio_r8(s)) && c != '\n')
4227         avio_w8(line, c);
4228     avio_w8(line, 0);
4229     avio_close_dyn_buf(line, &buf);
4230
4231     return buf;
4232 }
4233
4234 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
4235 {
4236     int i, ret = 1;
4237     char filename[1000];
4238     const char *base[3] = { getenv("AVCONV_DATADIR"),
4239                             getenv("HOME"),
4240                             AVCONV_DATADIR,
4241                             };
4242
4243     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
4244         if (!base[i])
4245             continue;
4246         if (codec_name) {
4247             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
4248                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
4249             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4250         }
4251         if (ret) {
4252             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
4253                      i != 1 ? "" : "/.avconv", preset_name);
4254             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4255         }
4256     }