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