Merge remote-tracking branch 'qatar/master'
[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
1221         if (tcgetattr (0, &tty) == 0) {
1222             oldtty = tty;
1223             restore_tty = 1;
1224             atexit(term_exit);
1225
1226             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1227                              |INLCR|IGNCR|ICRNL|IXON);
1228             tty.c_oflag |= OPOST;
1229             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1230             tty.c_cflag &= ~(CSIZE|PARENB);
1231             tty.c_cflag |= CS8;
1232             tty.c_cc[VMIN] = 1;
1233             tty.c_cc[VTIME] = 0;
1234
1235             tcsetattr (0, TCSANOW, &tty);
1236         }
1237         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1238     }
1239 #endif
1240     avformat_network_deinit();
1241
1242     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1243     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1244 #ifdef SIGXCPU
1245     signal(SIGXCPU, sigterm_handler);
1246 #endif
1247 }
1248
1249 /* read a key without blocking */
1250 static int read_key(void)
1251 {
1252     unsigned char ch;
1253 #if HAVE_TERMIOS_H
1254     int n = 1;
1255     struct timeval tv;
1256     fd_set rfds;
1257
1258     FD_ZERO(&rfds);
1259     FD_SET(0, &rfds);
1260     tv.tv_sec = 0;
1261     tv.tv_usec = 0;
1262     n = select(1, &rfds, NULL, NULL, &tv);
1263     if (n > 0) {
1264         n = read(0, &ch, 1);
1265         if (n == 1)
1266             return ch;
1267
1268         return n;
1269     }
1270 #elif HAVE_KBHIT
1271 #    if HAVE_PEEKNAMEDPIPE
1272     static int is_pipe;
1273     static HANDLE input_handle;
1274     DWORD dw, nchars;
1275     if(!input_handle){
1276         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1277         is_pipe = !GetConsoleMode(input_handle, &dw);
1278     }
1279
1280     if (stdin->_cnt > 0) {
1281         read(0, &ch, 1);
1282         return ch;
1283     }
1284     if (is_pipe) {
1285         /* When running under a GUI, you will end here. */
1286         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1287             return -1;
1288         //Read it
1289         if(nchars != 0) {
1290             read(0, &ch, 1);
1291             return ch;
1292         }else{
1293             return -1;
1294         }
1295     }
1296 #    endif
1297     if(kbhit())
1298         return(getch());
1299 #endif
1300     return -1;
1301 }
1302
1303 static int decode_interrupt_cb(void *ctx)
1304 {
1305     return received_nb_signals > 1;
1306 }
1307
1308 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1309
1310 void av_noreturn exit_program(int ret)
1311 {
1312     int i, j;
1313
1314     for (i = 0; i < nb_filtergraphs; i++) {
1315         avfilter_graph_free(&filtergraphs[i]->graph);
1316         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1317             av_freep(&filtergraphs[i]->inputs[j]->name);
1318             av_freep(&filtergraphs[i]->inputs[j]);
1319         }
1320         av_freep(&filtergraphs[i]->inputs);
1321         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1322             av_freep(&filtergraphs[i]->outputs[j]->name);
1323             av_freep(&filtergraphs[i]->outputs[j]);
1324         }
1325         av_freep(&filtergraphs[i]->outputs);
1326         av_freep(&filtergraphs[i]);
1327     }
1328     av_freep(&filtergraphs);
1329
1330     /* close files */
1331     for (i = 0; i < nb_output_files; i++) {
1332         AVFormatContext *s = output_files[i]->ctx;
1333         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1334             avio_close(s->pb);
1335         avformat_free_context(s);
1336         av_dict_free(&output_files[i]->opts);
1337         av_freep(&output_files[i]);
1338     }
1339     for (i = 0; i < nb_output_streams; i++) {
1340         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1341         while (bsfc) {
1342             AVBitStreamFilterContext *next = bsfc->next;
1343             av_bitstream_filter_close(bsfc);
1344             bsfc = next;
1345         }
1346         output_streams[i]->bitstream_filters = NULL;
1347
1348         av_freep(&output_streams[i]->filtered_frame);
1349         av_freep(&output_streams[i]->avfilter);
1350         av_freep(&output_streams[i]);
1351     }
1352     for (i = 0; i < nb_input_files; i++) {
1353         avformat_close_input(&input_files[i]->ctx);
1354         av_freep(&input_files[i]);
1355     }
1356     for (i = 0; i < nb_input_streams; i++) {
1357         av_freep(&input_streams[i]->decoded_frame);
1358         av_dict_free(&input_streams[i]->opts);
1359         free_buffer_pool(&input_streams[i]->buffer_pool);
1360         av_freep(&input_streams[i]->filters);
1361         av_freep(&input_streams[i]);
1362     }
1363
1364     if (vstats_file)
1365         fclose(vstats_file);
1366     av_free(vstats_filename);
1367
1368     av_freep(&input_streams);
1369     av_freep(&input_files);
1370     av_freep(&output_streams);
1371     av_freep(&output_files);
1372
1373     uninit_opts();
1374
1375     avfilter_uninit();
1376     avformat_network_deinit();
1377
1378     if (received_sigterm) {
1379         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1380                (int) received_sigterm);
1381         exit (255);
1382     }
1383
1384     exit(ret);
1385 }
1386
1387 static void assert_avoptions(AVDictionary *m)
1388 {
1389     AVDictionaryEntry *t;
1390     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1391         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1392         exit_program(1);
1393     }
1394 }
1395
1396 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1397 {
1398     const char *codec_string = encoder ? "encoder" : "decoder";
1399     AVCodec *codec;
1400     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1401         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1402         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1403                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1404                 codec_string, c->codec->name);
1405         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1406         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1407             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1408                    codec_string, codec->name);
1409         exit_program(1);
1410     }
1411 }
1412
1413 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1414 {
1415     if (codec && codec->sample_fmts) {
1416         const enum AVSampleFormat *p = codec->sample_fmts;
1417         for (; *p != -1; p++) {
1418             if (*p == st->codec->sample_fmt)
1419                 break;
1420         }
1421         if (*p == -1) {
1422             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1423                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1424             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1425             av_log(NULL, AV_LOG_WARNING,
1426                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1427                    av_get_sample_fmt_name(st->codec->sample_fmt),
1428                    codec->name,
1429                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1430             st->codec->sample_fmt = codec->sample_fmts[0];
1431         }
1432     }
1433 }
1434
1435 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1436 {
1437     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1438     AVCodecContext          *avctx = ost->st->codec;
1439     int ret;
1440
1441     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1442         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1443         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1444
1445     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1446         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1447         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1448             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1449             pkt->pts = pkt->dts = max;
1450         }
1451     }
1452
1453     /*
1454      * Audio encoders may split the packets --  #frames in != #packets out.
1455      * But there is no reordering, so we can limit the number of output packets
1456      * by simply dropping them here.
1457      * Counting encoded video frames needs to be done separately because of
1458      * reordering, see do_video_out()
1459      */
1460     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1461         if (ost->frame_number >= ost->max_frames) {
1462             av_free_packet(pkt);
1463             return;
1464         }
1465         ost->frame_number++;
1466     }
1467
1468     while (bsfc) {
1469         AVPacket new_pkt = *pkt;
1470         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1471                                            &new_pkt.data, &new_pkt.size,
1472                                            pkt->data, pkt->size,
1473                                            pkt->flags & AV_PKT_FLAG_KEY);
1474         if (a > 0) {
1475             av_free_packet(pkt);
1476             new_pkt.destruct = av_destruct_packet;
1477         } else if (a < 0) {
1478             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1479                    bsfc->filter->name, pkt->stream_index,
1480                    avctx->codec ? avctx->codec->name : "copy");
1481             print_error("", a);
1482             if (exit_on_error)
1483                 exit_program(1);
1484         }
1485         *pkt = new_pkt;
1486
1487         bsfc = bsfc->next;
1488     }
1489
1490     pkt->stream_index = ost->index;
1491     ret = av_interleaved_write_frame(s, pkt);
1492     if (ret < 0) {
1493         print_error("av_interleaved_write_frame()", ret);
1494         exit_program(1);
1495     }
1496 }
1497
1498 static int check_recording_time(OutputStream *ost)
1499 {
1500     OutputFile *of = output_files[ost->file_index];
1501
1502     if (of->recording_time != INT64_MAX &&
1503         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1504                       AV_TIME_BASE_Q) >= 0) {
1505         ost->is_past_recording_time = 1;
1506         return 0;
1507     }
1508     return 1;
1509 }
1510
1511 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1512                          AVFrame *frame)
1513 {
1514     AVCodecContext *enc = ost->st->codec;
1515     AVPacket pkt;
1516     int got_packet = 0;
1517
1518     av_init_packet(&pkt);
1519     pkt.data = NULL;
1520     pkt.size = 0;
1521 #if 0
1522     if (!check_recording_time(ost))
1523         return;
1524 #endif
1525     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1526         frame->pts = ost->sync_opts;
1527     ost->sync_opts = frame->pts + frame->nb_samples;
1528
1529     av_assert0(pkt.size || !pkt.data);
1530     update_benchmark(NULL);
1531     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1532         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1533         exit_program(1);
1534     }
1535     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1536
1537     if (got_packet) {
1538         if (pkt.pts != AV_NOPTS_VALUE)
1539             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1540         if (pkt.dts != AV_NOPTS_VALUE)
1541             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1542         if (pkt.duration > 0)
1543             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1544
1545         if (debug_ts) {
1546             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1547                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1548                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1549                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1550         }
1551
1552         write_frame(s, &pkt, ost);
1553
1554         audio_size += pkt.size;
1555         av_free_packet(&pkt);
1556     }
1557 }
1558
1559 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1560 {
1561     AVCodecContext *dec;
1562     AVPicture *picture2;
1563     AVPicture picture_tmp;
1564     uint8_t *buf = 0;
1565
1566     dec = ist->st->codec;
1567
1568     /* deinterlace : must be done before any resize */
1569     if (do_deinterlace) {
1570         int size;
1571
1572         /* create temporary picture */
1573         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1574         buf  = av_malloc(size);
1575         if (!buf)
1576             return;
1577
1578         picture2 = &picture_tmp;
1579         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1580
1581         if (avpicture_deinterlace(picture2, picture,
1582                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1583             /* if error, do not deinterlace */
1584             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1585             av_free(buf);
1586             buf = NULL;
1587             picture2 = picture;
1588         }
1589     } else {
1590         picture2 = picture;
1591     }
1592
1593     if (picture != picture2)
1594         *picture = *picture2;
1595     *bufp = buf;
1596 }
1597
1598 static void do_subtitle_out(AVFormatContext *s,
1599                             OutputStream *ost,
1600                             InputStream *ist,
1601                             AVSubtitle *sub,
1602                             int64_t pts)
1603 {
1604     static uint8_t *subtitle_out = NULL;
1605     int subtitle_out_max_size = 1024 * 1024;
1606     int subtitle_out_size, nb, i;
1607     AVCodecContext *enc;
1608     AVPacket pkt;
1609
1610     if (pts == AV_NOPTS_VALUE) {
1611         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1612         if (exit_on_error)
1613             exit_program(1);
1614         return;
1615     }
1616
1617     enc = ost->st->codec;
1618
1619     if (!subtitle_out) {
1620         subtitle_out = av_malloc(subtitle_out_max_size);
1621     }
1622
1623     /* Note: DVB subtitle need one packet to draw them and one other
1624        packet to clear them */
1625     /* XXX: signal it in the codec context ? */
1626     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1627         nb = 2;
1628     else
1629         nb = 1;
1630
1631     for (i = 0; i < nb; i++) {
1632         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1633
1634         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1635         // start_display_time is required to be 0
1636         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1637         sub->end_display_time  -= sub->start_display_time;
1638         sub->start_display_time = 0;
1639         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1640                                                     subtitle_out_max_size, sub);
1641         if (subtitle_out_size < 0) {
1642             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1643             exit_program(1);
1644         }
1645
1646         av_init_packet(&pkt);
1647         pkt.data = subtitle_out;
1648         pkt.size = subtitle_out_size;
1649         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1650         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1651             /* XXX: the pts correction is handled here. Maybe handling
1652                it in the codec would be better */
1653             if (i == 0)
1654                 pkt.pts += 90 * sub->start_display_time;
1655             else
1656                 pkt.pts += 90 * sub->end_display_time;
1657         }
1658         write_frame(s, &pkt, ost);
1659     }
1660 }
1661
1662 static void do_video_out(AVFormatContext *s,
1663                          OutputStream *ost,
1664                          AVFrame *in_picture,
1665                          float quality)
1666 {
1667     int ret, format_video_sync;
1668     AVPacket pkt;
1669     AVCodecContext *enc = ost->st->codec;
1670     int nb_frames;
1671     double sync_ipts, delta;
1672     double duration = 0;
1673     int frame_size = 0;
1674     InputStream *ist = NULL;
1675
1676     if (ost->source_index >= 0)
1677         ist = input_streams[ost->source_index];
1678
1679     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1680         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1681
1682     sync_ipts = in_picture->pts;
1683     delta = sync_ipts - ost->sync_opts + duration;
1684
1685     /* by default, we output a single frame */
1686     nb_frames = 1;
1687
1688     format_video_sync = video_sync_method;
1689     if (format_video_sync == VSYNC_AUTO)
1690         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1691
1692     switch (format_video_sync) {
1693     case VSYNC_CFR:
1694         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1695         if (delta < -1.1)
1696             nb_frames = 0;
1697         else if (delta > 1.1)
1698             nb_frames = lrintf(delta);
1699         break;
1700     case VSYNC_VFR:
1701         if (delta <= -0.6)
1702             nb_frames = 0;
1703         else if (delta > 0.6)
1704             ost->sync_opts = lrint(sync_ipts);
1705         break;
1706     case VSYNC_DROP:
1707     case VSYNC_PASSTHROUGH:
1708         ost->sync_opts = lrint(sync_ipts);
1709         break;
1710     default:
1711         av_assert0(0);
1712     }
1713
1714     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1715     if (nb_frames == 0) {
1716         nb_frames_drop++;
1717         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1718         return;
1719     } else if (nb_frames > 1) {
1720         nb_frames_dup += nb_frames - 1;
1721         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1722     }
1723
1724
1725 duplicate_frame:
1726     av_init_packet(&pkt);
1727     pkt.data = NULL;
1728     pkt.size = 0;
1729
1730     in_picture->pts = ost->sync_opts;
1731
1732     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1733         enc->codec->id == CODEC_ID_RAWVIDEO) {
1734         /* raw pictures are written as AVPicture structure to
1735            avoid any copies. We support temporarily the older
1736            method. */
1737         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1738         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1739         pkt.data   = (uint8_t *)in_picture;
1740         pkt.size   =  sizeof(AVPicture);
1741         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1742         pkt.flags |= AV_PKT_FLAG_KEY;
1743
1744         write_frame(s, &pkt, ost);
1745     } else {
1746         int got_packet;
1747         AVFrame big_picture;
1748
1749         big_picture = *in_picture;
1750         /* better than nothing: use input picture interlaced
1751            settings */
1752         big_picture.interlaced_frame = in_picture->interlaced_frame;
1753         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1754             if (ost->top_field_first == -1)
1755                 big_picture.top_field_first = in_picture->top_field_first;
1756             else
1757                 big_picture.top_field_first = !!ost->top_field_first;
1758         }
1759
1760         /* handles same_quant here. This is not correct because it may
1761            not be a global option */
1762         big_picture.quality = quality;
1763         if (!enc->me_threshold)
1764             big_picture.pict_type = 0;
1765         if (ost->forced_kf_index < ost->forced_kf_count &&
1766             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1767             big_picture.pict_type = AV_PICTURE_TYPE_I;
1768             ost->forced_kf_index++;
1769         }
1770         update_benchmark(NULL);
1771         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1772         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1773         if (ret < 0) {
1774             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1775             exit_program(1);
1776         }
1777
1778         if (got_packet) {
1779             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1780                 pkt.pts = ost->sync_opts;
1781
1782             if (pkt.pts != AV_NOPTS_VALUE)
1783                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1784             if (pkt.dts != AV_NOPTS_VALUE)
1785                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1786
1787             if (debug_ts) {
1788                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1789                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1790                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1791                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1792             }
1793
1794             write_frame(s, &pkt, ost);
1795             frame_size = pkt.size;
1796             video_size += pkt.size;
1797             av_free_packet(&pkt);
1798
1799             /* if two pass, output log */
1800             if (ost->logfile && enc->stats_out) {
1801                 fprintf(ost->logfile, "%s", enc->stats_out);
1802             }
1803         }
1804     }
1805     ost->sync_opts++;
1806     /*
1807      * For video, number of frames in == number of packets out.
1808      * But there may be reordering, so we can't throw away frames on encoder
1809      * flush, we need to limit them here, before they go into encoder.
1810      */
1811     ost->frame_number++;
1812
1813     if(--nb_frames)
1814         goto duplicate_frame;
1815
1816     if (vstats_filename && frame_size)
1817         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1818 }
1819
1820 static double psnr(double d)
1821 {
1822     return -10.0 * log(d) / log(10.0);
1823 }
1824
1825 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1826                            int frame_size)
1827 {
1828     AVCodecContext *enc;
1829     int frame_number;
1830     double ti1, bitrate, avg_bitrate;
1831
1832     /* this is executed just the first time do_video_stats is called */
1833     if (!vstats_file) {
1834         vstats_file = fopen(vstats_filename, "w");
1835         if (!vstats_file) {
1836             perror("fopen");
1837             exit_program(1);
1838         }
1839     }
1840
1841     enc = ost->st->codec;
1842     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1843         frame_number = ost->frame_number;
1844         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1845         if (enc->flags&CODEC_FLAG_PSNR)
1846             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1847
1848         fprintf(vstats_file,"f_size= %6d ", frame_size);
1849         /* compute pts value */
1850         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1851         if (ti1 < 0.01)
1852             ti1 = 0.01;
1853
1854         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1855         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1856         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1857                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1858         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1859     }
1860 }
1861
1862 /* check for new output on any of the filtergraphs */
1863 static int poll_filters(void)
1864 {
1865     AVFilterBufferRef *picref;
1866     AVFrame *filtered_frame = NULL;
1867     int i, ret, ret_all;
1868     unsigned nb_success, nb_eof;
1869     int64_t frame_pts;
1870
1871     while (1) {
1872         /* Reap all buffers present in the buffer sinks */
1873         for (i = 0; i < nb_output_streams; i++) {
1874             OutputStream *ost = output_streams[i];
1875             OutputFile    *of = output_files[ost->file_index];
1876             int ret = 0;
1877
1878             if (!ost->filter)
1879                 continue;
1880
1881             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1882                 return AVERROR(ENOMEM);
1883             } else
1884                 avcodec_get_frame_defaults(ost->filtered_frame);
1885             filtered_frame = ost->filtered_frame;
1886
1887             while (!ost->is_past_recording_time) {
1888                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1889                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1890                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1891                                                     ost->st->codec->frame_size);
1892                 else
1893 #ifdef SINKA
1894                     ret = av_buffersink_read(ost->filter->filter, &picref);
1895 #else
1896                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1897                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1898 #endif
1899                 if (ret < 0) {
1900                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1901                         char buf[256];
1902                         av_strerror(ret, buf, sizeof(buf));
1903                         av_log(NULL, AV_LOG_WARNING,
1904                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1905                     }
1906                     break;
1907                 }
1908                 frame_pts = AV_NOPTS_VALUE;
1909                 if (picref->pts != AV_NOPTS_VALUE) {
1910                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1911                                                     ost->filter->filter->inputs[0]->time_base,
1912                                                     ost->st->codec->time_base) -
1913                                         av_rescale_q(of->start_time,
1914                                                     AV_TIME_BASE_Q,
1915                                                     ost->st->codec->time_base);
1916
1917                     if (of->start_time && filtered_frame->pts < 0) {
1918                         avfilter_unref_buffer(picref);
1919                         continue;
1920                     }
1921                 }
1922                 //if (ost->source_index >= 0)
1923                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1924
1925
1926                 switch (ost->filter->filter->inputs[0]->type) {
1927                 case AVMEDIA_TYPE_VIDEO:
1928                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1929                     filtered_frame->pts = frame_pts;
1930                     if (!ost->frame_aspect_ratio)
1931                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1932
1933                     do_video_out(of->ctx, ost, filtered_frame,
1934                                  same_quant ? ost->last_quality :
1935                                               ost->st->codec->global_quality);
1936                     break;
1937                 case AVMEDIA_TYPE_AUDIO:
1938                     avfilter_copy_buf_props(filtered_frame, picref);
1939                     filtered_frame->pts = frame_pts;
1940                     do_audio_out(of->ctx, ost, filtered_frame);
1941                     break;
1942                 default:
1943                     // TODO support subtitle filters
1944                     av_assert0(0);
1945                 }
1946
1947                 avfilter_unref_buffer(picref);
1948             }
1949         }
1950         /* Request frames through all the graphs */
1951         ret_all = nb_success = nb_eof = 0;
1952         for (i = 0; i < nb_filtergraphs; i++) {
1953             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1954             if (!ret) {
1955                 nb_success++;
1956             } else if (ret == AVERROR_EOF) {
1957                 nb_eof++;
1958             } else if (ret != AVERROR(EAGAIN)) {
1959                 char buf[256];
1960                 av_strerror(ret, buf, sizeof(buf));
1961                 av_log(NULL, AV_LOG_WARNING,
1962                        "Error in request_frame(): %s\n", buf);
1963                 ret_all = ret;
1964             }
1965         }
1966         if (!nb_success)
1967             break;
1968         /* Try again if anything succeeded */
1969     }
1970     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1971 }
1972
1973 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1974 {
1975     char buf[1024];
1976     OutputStream *ost;
1977     AVFormatContext *oc;
1978     int64_t total_size;
1979     AVCodecContext *enc;
1980     int frame_number, vid, i;
1981     double bitrate;
1982     int64_t pts = INT64_MAX;
1983     static int64_t last_time = -1;
1984     static int qp_histogram[52];
1985     int hours, mins, secs, us;
1986
1987     if (!print_stats && !is_last_report)
1988         return;
1989
1990     if (!is_last_report) {
1991         if (last_time == -1) {
1992             last_time = cur_time;
1993             return;
1994         }
1995         if ((cur_time - last_time) < 500000)
1996             return;
1997         last_time = cur_time;
1998     }
1999
2000
2001     oc = output_files[0]->ctx;
2002
2003     total_size = avio_size(oc->pb);
2004     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2005         total_size = avio_tell(oc->pb);
2006         if (total_size < 0)
2007             total_size = 0;
2008     }
2009
2010     buf[0] = '\0';
2011     vid = 0;
2012     for (i = 0; i < nb_output_streams; i++) {
2013         float q = -1;
2014         ost = output_streams[i];
2015         enc = ost->st->codec;
2016         if (!ost->stream_copy && enc->coded_frame)
2017             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2018         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2019             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2020         }
2021         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2022             float fps, t = (cur_time-timer_start) / 1000000.0;
2023
2024             frame_number = ost->frame_number;
2025             fps = t > 1 ? frame_number / t : 0;
2026             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2027                      frame_number, fps < 9.95, fps, q);
2028             if (is_last_report)
2029                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2030             if (qp_hist) {
2031                 int j;
2032                 int qp = lrintf(q);
2033                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2034                     qp_histogram[qp]++;
2035                 for (j = 0; j < 32; j++)
2036                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2037             }
2038             if (enc->flags&CODEC_FLAG_PSNR) {
2039                 int j;
2040                 double error, error_sum = 0;
2041                 double scale, scale_sum = 0;
2042                 char type[3] = { 'Y','U','V' };
2043                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2044                 for (j = 0; j < 3; j++) {
2045                     if (is_last_report) {
2046                         error = enc->error[j];
2047                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2048                     } else {
2049                         error = enc->coded_frame->error[j];
2050                         scale = enc->width * enc->height * 255.0 * 255.0;
2051                     }
2052                     if (j)
2053                         scale /= 4;
2054                     error_sum += error;
2055                     scale_sum += scale;
2056                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2057                 }
2058                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2059             }
2060             vid = 1;
2061         }
2062         /* compute min output value */
2063         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2064                                       ost->st->time_base, AV_TIME_BASE_Q));
2065     }
2066
2067     secs = pts / AV_TIME_BASE;
2068     us = pts % AV_TIME_BASE;
2069     mins = secs / 60;
2070     secs %= 60;
2071     hours = mins / 60;
2072     mins %= 60;
2073
2074     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2075
2076     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2077              "size=%8.0fkB time=", total_size / 1024.0);
2078     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2079              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2080              (100 * us) / AV_TIME_BASE);
2081     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2082              "bitrate=%6.1fkbits/s", bitrate);
2083
2084     if (nb_frames_dup || nb_frames_drop)
2085         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2086                 nb_frames_dup, nb_frames_drop);
2087
2088     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2089
2090     fflush(stderr);
2091
2092     if (is_last_report) {
2093         int64_t raw= audio_size + video_size + extra_size;
2094         av_log(NULL, AV_LOG_INFO, "\n");
2095         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2096                video_size / 1024.0,
2097                audio_size / 1024.0,
2098                extra_size / 1024.0,
2099                100.0 * (total_size - raw) / raw
2100         );
2101         if(video_size + audio_size + extra_size == 0){
2102             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2103         }
2104     }
2105 }
2106
2107 static void flush_encoders(void)
2108 {
2109     int i, ret;
2110
2111     for (i = 0; i < nb_output_streams; i++) {
2112         OutputStream   *ost = output_streams[i];
2113         AVCodecContext *enc = ost->st->codec;
2114         AVFormatContext *os = output_files[ost->file_index]->ctx;
2115         int stop_encoding = 0;
2116
2117         if (!ost->encoding_needed)
2118             continue;
2119
2120         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2121             continue;
2122         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2123             continue;
2124
2125         for (;;) {
2126             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2127             const char *desc;
2128             int64_t *size;
2129
2130             switch (ost->st->codec->codec_type) {
2131             case AVMEDIA_TYPE_AUDIO:
2132                 encode = avcodec_encode_audio2;
2133                 desc   = "Audio";
2134                 size   = &audio_size;
2135                 break;
2136             case AVMEDIA_TYPE_VIDEO:
2137                 encode = avcodec_encode_video2;
2138                 desc   = "Video";
2139                 size   = &video_size;
2140                 break;
2141             default:
2142                 stop_encoding = 1;
2143             }
2144
2145             if (encode) {
2146                 AVPacket pkt;
2147                 int got_packet;
2148                 av_init_packet(&pkt);
2149                 pkt.data = NULL;
2150                 pkt.size = 0;
2151
2152                 update_benchmark(NULL);
2153                 ret = encode(enc, &pkt, NULL, &got_packet);
2154                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2155                 if (ret < 0) {
2156                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2157                     exit_program(1);
2158                 }
2159                 *size += pkt.size;
2160                 if (ost->logfile && enc->stats_out) {
2161                     fprintf(ost->logfile, "%s", enc->stats_out);
2162                 }
2163                 if (!got_packet) {
2164                     stop_encoding = 1;
2165                     break;
2166                 }
2167                 if (pkt.pts != AV_NOPTS_VALUE)
2168                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2169                 if (pkt.dts != AV_NOPTS_VALUE)
2170                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2171                 write_frame(os, &pkt, ost);
2172             }
2173
2174             if (stop_encoding)
2175                 break;
2176         }
2177     }
2178 }
2179
2180 /*
2181  * Check whether a packet from ist should be written into ost at this time
2182  */
2183 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2184 {
2185     OutputFile *of = output_files[ost->file_index];
2186     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2187
2188     if (ost->source_index != ist_index)
2189         return 0;
2190
2191     if (of->start_time && ist->pts < of->start_time)
2192         return 0;
2193
2194     if (of->recording_time != INT64_MAX &&
2195         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2196                       (AVRational){ 1, 1000000 }) >= 0) {
2197         ost->is_past_recording_time = 1;
2198         return 0;
2199     }
2200
2201     return 1;
2202 }
2203
2204 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2205 {
2206     OutputFile *of = output_files[ost->file_index];
2207     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2208     AVPicture pict;
2209     AVPacket opkt;
2210
2211     av_init_packet(&opkt);
2212
2213     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2214         !ost->copy_initial_nonkeyframes)
2215         return;
2216
2217     /* force the input stream PTS */
2218     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2219         audio_size += pkt->size;
2220     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2221         video_size += pkt->size;
2222         ost->sync_opts++;
2223     }
2224
2225     if (pkt->pts != AV_NOPTS_VALUE)
2226         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2227     else
2228         opkt.pts = AV_NOPTS_VALUE;
2229
2230     if (pkt->dts == AV_NOPTS_VALUE)
2231         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2232     else
2233         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2234     opkt.dts -= ost_tb_start_time;
2235
2236     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2237     opkt.flags    = pkt->flags;
2238
2239     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2240     if (  ost->st->codec->codec_id != CODEC_ID_H264
2241        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2242        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2243        && ost->st->codec->codec_id != CODEC_ID_VC1
2244        ) {
2245         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2246             opkt.destruct = av_destruct_packet;
2247     } else {
2248         opkt.data = pkt->data;
2249         opkt.size = pkt->size;
2250     }
2251     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2252         /* store AVPicture in AVPacket, as expected by the output format */
2253         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2254         opkt.data = (uint8_t *)&pict;
2255         opkt.size = sizeof(AVPicture);
2256         opkt.flags |= AV_PKT_FLAG_KEY;
2257     }
2258
2259     write_frame(of->ctx, &opkt, ost);
2260     ost->st->codec->frame_number++;
2261     av_free_packet(&opkt);
2262 }
2263
2264 static void rate_emu_sleep(InputStream *ist)
2265 {
2266     if (input_files[ist->file_index]->rate_emu) {
2267         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2268         int64_t now = av_gettime() - ist->start;
2269         if (pts > now)
2270             usleep(pts - now);
2271     }
2272 }
2273
2274 static int guess_input_channel_layout(InputStream *ist)
2275 {
2276     AVCodecContext *dec = ist->st->codec;
2277
2278     if (!dec->channel_layout) {
2279         char layout_name[256];
2280
2281         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2282         if (!dec->channel_layout)
2283             return 0;
2284         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2285                                      dec->channels, dec->channel_layout);
2286         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2287                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2288     }
2289     return 1;
2290 }
2291
2292 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2293 {
2294     AVFrame *decoded_frame;
2295     AVCodecContext *avctx = ist->st->codec;
2296     int i, ret, resample_changed;
2297
2298     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2299         return AVERROR(ENOMEM);
2300     else
2301         avcodec_get_frame_defaults(ist->decoded_frame);
2302     decoded_frame = ist->decoded_frame;
2303
2304     update_benchmark(NULL);
2305     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2306     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2307     if (ret < 0) {
2308         return ret;
2309     }
2310     if (avctx->sample_rate <= 0) {
2311         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2312         return AVERROR_INVALIDDATA;
2313     }
2314
2315     if (!*got_output) {
2316         /* no audio frame */
2317         if (!pkt->size)
2318             for (i = 0; i < ist->nb_filters; i++)
2319                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2320                                      AV_BUFFERSRC_FLAG_NO_COPY);
2321         return ret;
2322     }
2323
2324     /* if the decoder provides a pts, use it instead of the last packet pts.
2325        the decoder could be delaying output by a packet or more. */
2326     if (decoded_frame->pts != AV_NOPTS_VALUE)
2327         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2328     else if (pkt->pts != AV_NOPTS_VALUE) {
2329         decoded_frame->pts = pkt->pts;
2330         pkt->pts           = AV_NOPTS_VALUE;
2331     }else
2332         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2333
2334
2335 #if 1
2336     /* increment next_dts to use for the case where the input stream does not
2337        have timestamps or there are multiple frames in the packet */
2338     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2339                      avctx->sample_rate;
2340     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2341                      avctx->sample_rate;
2342 #endif
2343
2344     rate_emu_sleep(ist);
2345
2346     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2347                        ist->resample_channels       != avctx->channels               ||
2348                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2349                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2350     if (resample_changed) {
2351         char layout1[64], layout2[64];
2352
2353         if (!guess_input_channel_layout(ist)) {
2354             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2355                    "layout for Input Stream #%d.%d\n", ist->file_index,
2356                    ist->st->index);
2357             exit_program(1);
2358         }
2359         decoded_frame->channel_layout = avctx->channel_layout;
2360
2361         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2362                                      ist->resample_channel_layout);
2363         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2364                                      decoded_frame->channel_layout);
2365
2366         av_log(NULL, AV_LOG_INFO,
2367                "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",
2368                ist->file_index, ist->st->index,
2369                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2370                ist->resample_channels, layout1,
2371                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2372                avctx->channels, layout2);
2373
2374         ist->resample_sample_fmt     = decoded_frame->format;
2375         ist->resample_sample_rate    = decoded_frame->sample_rate;
2376         ist->resample_channel_layout = decoded_frame->channel_layout;
2377         ist->resample_channels       = avctx->channels;
2378
2379         for (i = 0; i < nb_filtergraphs; i++)
2380             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2381                 configure_filtergraph(filtergraphs[i]) < 0) {
2382                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2383                 exit_program(1);
2384             }
2385     }
2386
2387     for (i = 0; i < ist->nb_filters; i++)
2388         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2389
2390     return ret;
2391 }
2392
2393 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2394 {
2395     AVFrame *decoded_frame;
2396     void *buffer_to_free = NULL;
2397     int i, ret = 0, resample_changed;
2398     int64_t best_effort_timestamp;
2399     AVRational *frame_sample_aspect;
2400     float quality;
2401
2402     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2403         return AVERROR(ENOMEM);
2404     else
2405         avcodec_get_frame_defaults(ist->decoded_frame);
2406     decoded_frame = ist->decoded_frame;
2407     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2408
2409     update_benchmark(NULL);
2410     ret = avcodec_decode_video2(ist->st->codec,
2411                                 decoded_frame, got_output, pkt);
2412     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2413     if (ret < 0)
2414         return ret;
2415
2416     quality = same_quant ? decoded_frame->quality : 0;
2417     if (!*got_output) {
2418         /* no picture yet */
2419         if (!pkt->size)
2420             for (i = 0; i < ist->nb_filters; i++)
2421                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2422         return ret;
2423     }
2424
2425     if(ist->top_field_first>=0)
2426         decoded_frame->top_field_first = ist->top_field_first;
2427
2428     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2429     if(best_effort_timestamp != AV_NOPTS_VALUE)
2430         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2431
2432     pkt->size = 0;
2433     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2434
2435     rate_emu_sleep(ist);
2436
2437     if (ist->st->sample_aspect_ratio.num)
2438         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2439
2440     resample_changed = ist->resample_width   != decoded_frame->width  ||
2441                        ist->resample_height  != decoded_frame->height ||
2442                        ist->resample_pix_fmt != decoded_frame->format;
2443     if (resample_changed) {
2444         av_log(NULL, AV_LOG_INFO,
2445                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2446                ist->file_index, ist->st->index,
2447                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2448                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2449
2450         ist->resample_width   = decoded_frame->width;
2451         ist->resample_height  = decoded_frame->height;
2452         ist->resample_pix_fmt = decoded_frame->format;
2453
2454         for (i = 0; i < nb_filtergraphs; i++)
2455             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2456                 configure_filtergraph(filtergraphs[i]) < 0) {
2457                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2458                 exit_program(1);
2459             }
2460     }
2461
2462     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2463     for (i = 0; i < ist->nb_filters; i++) {
2464         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2465                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2466                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2467         // XXX what an ugly hack
2468         if (ist->filters[i]->graph->nb_outputs == 1)
2469             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2470
2471         if (!frame_sample_aspect->num)
2472             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2473         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2474             FrameBuffer      *buf = decoded_frame->opaque;
2475             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2476                                         decoded_frame->data, decoded_frame->linesize,
2477                                         AV_PERM_READ | AV_PERM_PRESERVE,
2478                                         ist->st->codec->width, ist->st->codec->height,
2479                                         ist->st->codec->pix_fmt);
2480
2481             avfilter_copy_frame_props(fb, decoded_frame);
2482             fb->buf->priv           = buf;
2483             fb->buf->free           = filter_release_buffer;
2484
2485             av_assert0(buf->refcount>0);
2486             buf->refcount++;
2487             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2488                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2489                                  AV_BUFFERSRC_FLAG_NO_COPY);
2490         } else
2491         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2492             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2493             exit_program(1);
2494         }
2495
2496     }
2497
2498     av_free(buffer_to_free);
2499     return ret;
2500 }
2501
2502 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2503 {
2504     AVSubtitle subtitle;
2505     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2506                                           &subtitle, got_output, pkt);
2507     if (ret < 0)
2508         return ret;
2509     if (!*got_output)
2510         return ret;
2511
2512     rate_emu_sleep(ist);
2513
2514     for (i = 0; i < nb_output_streams; i++) {
2515         OutputStream *ost = output_streams[i];
2516
2517         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2518             continue;
2519
2520         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2521     }
2522
2523     avsubtitle_free(&subtitle);
2524     return ret;
2525 }
2526
2527 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2528 static int output_packet(InputStream *ist, const AVPacket *pkt)
2529 {
2530     int ret = 0, i;
2531     int got_output;
2532
2533     AVPacket avpkt;
2534     if (!ist->saw_first_ts) {
2535         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;
2536         ist->pts = 0;
2537         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2538             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2539             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2540         }
2541         ist->saw_first_ts = 1;
2542     }
2543
2544     if (ist->next_dts == AV_NOPTS_VALUE)
2545         ist->next_dts = ist->dts;
2546     if (ist->next_pts == AV_NOPTS_VALUE)
2547         ist->next_pts = ist->pts;
2548
2549     if (pkt == NULL) {
2550         /* EOF handling */
2551         av_init_packet(&avpkt);
2552         avpkt.data = NULL;
2553         avpkt.size = 0;
2554         goto handle_eof;
2555     } else {
2556         avpkt = *pkt;
2557     }
2558
2559     if (pkt->dts != AV_NOPTS_VALUE) {
2560         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2561         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2562             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2563     }
2564
2565     // while we have more to decode or while the decoder did output something on EOF
2566     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2567         int duration;
2568     handle_eof:
2569
2570         ist->pts = ist->next_pts;
2571         ist->dts = ist->next_dts;
2572
2573         if (avpkt.size && avpkt.size != pkt->size) {
2574             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2575                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2576             ist->showed_multi_packet_warning = 1;
2577         }
2578
2579         switch (ist->st->codec->codec_type) {
2580         case AVMEDIA_TYPE_AUDIO:
2581             ret = decode_audio    (ist, &avpkt, &got_output);
2582             break;
2583         case AVMEDIA_TYPE_VIDEO:
2584             ret = decode_video    (ist, &avpkt, &got_output);
2585             if (avpkt.duration) {
2586                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2587             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2588                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2589                 duration = ((int64_t)AV_TIME_BASE *
2590                                 ist->st->codec->time_base.num * ticks) /
2591                                 ist->st->codec->time_base.den;
2592             } else
2593                 duration = 0;
2594
2595             if(ist->dts != AV_NOPTS_VALUE && duration) {
2596                 ist->next_dts += duration;
2597             }else
2598                 ist->next_dts = AV_NOPTS_VALUE;
2599
2600             if (got_output)
2601                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2602             break;
2603         case AVMEDIA_TYPE_SUBTITLE:
2604             ret = transcode_subtitles(ist, &avpkt, &got_output);
2605             break;
2606         default:
2607             return -1;
2608         }
2609
2610         if (ret < 0)
2611             return ret;
2612
2613         avpkt.dts=
2614         avpkt.pts= AV_NOPTS_VALUE;
2615
2616         // touch data and size only if not EOF
2617         if (pkt) {
2618             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2619                 ret = avpkt.size;
2620             avpkt.data += ret;
2621             avpkt.size -= ret;
2622         }
2623         if (!got_output) {
2624             continue;
2625         }
2626     }
2627
2628     /* handle stream copy */
2629     if (!ist->decoding_needed) {
2630         rate_emu_sleep(ist);
2631         ist->dts = ist->next_dts;
2632         switch (ist->st->codec->codec_type) {
2633         case AVMEDIA_TYPE_AUDIO:
2634             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2635                              ist->st->codec->sample_rate;
2636             break;
2637         case AVMEDIA_TYPE_VIDEO:
2638             if (pkt->duration) {
2639                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2640             } else if(ist->st->codec->time_base.num != 0) {
2641                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2642                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2643                                   ist->st->codec->time_base.num * ticks) /
2644                                   ist->st->codec->time_base.den;
2645             }
2646             break;
2647         }
2648         ist->pts = ist->dts;
2649         ist->next_pts = ist->next_dts;
2650     }
2651     for (i = 0; pkt && i < nb_output_streams; i++) {
2652         OutputStream *ost = output_streams[i];
2653
2654         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2655             continue;
2656
2657         do_streamcopy(ist, ost, pkt);
2658     }
2659
2660     return 0;
2661 }
2662
2663 static void print_sdp(void)
2664 {
2665     char sdp[2048];
2666     int i;
2667     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2668
2669     if (!avc)
2670         exit_program(1);
2671     for (i = 0; i < nb_output_files; i++)
2672         avc[i] = output_files[i]->ctx;
2673
2674     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2675     printf("SDP:\n%s\n", sdp);
2676     fflush(stdout);
2677     av_freep(&avc);
2678 }
2679
2680 static int init_input_stream(int ist_index, char *error, int error_len)
2681 {
2682     InputStream *ist = input_streams[ist_index];
2683
2684     if (ist->decoding_needed) {
2685         AVCodec *codec = ist->dec;
2686         if (!codec) {
2687             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2688                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2689             return AVERROR(EINVAL);
2690         }
2691
2692         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2693         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2694             ist->st->codec->get_buffer     = codec_get_buffer;
2695             ist->st->codec->release_buffer = codec_release_buffer;
2696             ist->st->codec->opaque         = &ist->buffer_pool;
2697         }
2698
2699         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2700             av_dict_set(&ist->opts, "threads", "auto", 0);
2701         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2702             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2703                     ist->file_index, ist->st->index);
2704             return AVERROR(EINVAL);
2705         }
2706         assert_codec_experimental(ist->st->codec, 0);
2707         assert_avoptions(ist->opts);
2708     }
2709
2710     ist->next_pts = AV_NOPTS_VALUE;
2711     ist->next_dts = AV_NOPTS_VALUE;
2712     ist->is_start = 1;
2713
2714     return 0;
2715 }
2716
2717 static InputStream *get_input_stream(OutputStream *ost)
2718 {
2719     if (ost->source_index >= 0)
2720         return input_streams[ost->source_index];
2721
2722     if (ost->filter) {
2723         FilterGraph *fg = ost->filter->graph;
2724         int i;
2725
2726         for (i = 0; i < fg->nb_inputs; i++)
2727             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2728                 return fg->inputs[i]->ist;
2729     }
2730
2731     return NULL;
2732 }
2733
2734 static int transcode_init(void)
2735 {
2736     int ret = 0, i, j, k;
2737     AVFormatContext *oc;
2738     AVCodecContext *codec, *icodec;
2739     OutputStream *ost;
2740     InputStream *ist;
2741     char error[1024];
2742     int want_sdp = 1;
2743
2744     /* init framerate emulation */
2745     for (i = 0; i < nb_input_files; i++) {
2746         InputFile *ifile = input_files[i];
2747         if (ifile->rate_emu)
2748             for (j = 0; j < ifile->nb_streams; j++)
2749                 input_streams[j + ifile->ist_index]->start = av_gettime();
2750     }
2751
2752     /* output stream init */
2753     for (i = 0; i < nb_output_files; i++) {
2754         oc = output_files[i]->ctx;
2755         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2756             av_dump_format(oc, i, oc->filename, 1);
2757             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2758             return AVERROR(EINVAL);
2759         }
2760     }
2761
2762     /* init complex filtergraphs */
2763     for (i = 0; i < nb_filtergraphs; i++)
2764         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2765             return ret;
2766
2767     /* for each output stream, we compute the right encoding parameters */
2768     for (i = 0; i < nb_output_streams; i++) {
2769         ost = output_streams[i];
2770         oc  = output_files[ost->file_index]->ctx;
2771         ist = get_input_stream(ost);
2772
2773         if (ost->attachment_filename)
2774             continue;
2775
2776         codec  = ost->st->codec;
2777
2778         if (ist) {
2779             icodec = ist->st->codec;
2780
2781             ost->st->disposition          = ist->st->disposition;
2782             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2783             codec->chroma_sample_location = icodec->chroma_sample_location;
2784         }
2785
2786         if (ost->stream_copy) {
2787             uint64_t extra_size;
2788
2789             av_assert0(ist && !ost->filter);
2790
2791             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2792
2793             if (extra_size > INT_MAX) {
2794                 return AVERROR(EINVAL);
2795             }
2796
2797             /* if stream_copy is selected, no need to decode or encode */
2798             codec->codec_id   = icodec->codec_id;
2799             codec->codec_type = icodec->codec_type;
2800
2801             if (!codec->codec_tag) {
2802                 if (!oc->oformat->codec_tag ||
2803                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2804                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2805                     codec->codec_tag = icodec->codec_tag;
2806             }
2807
2808             codec->bit_rate       = icodec->bit_rate;
2809             codec->rc_max_rate    = icodec->rc_max_rate;
2810             codec->rc_buffer_size = icodec->rc_buffer_size;
2811             codec->field_order    = icodec->field_order;
2812             codec->extradata      = av_mallocz(extra_size);
2813             if (!codec->extradata) {
2814                 return AVERROR(ENOMEM);
2815             }
2816             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2817             codec->extradata_size= icodec->extradata_size;
2818             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2819
2820             codec->time_base = ist->st->time_base;
2821             /*
2822              * Avi is a special case here because it supports variable fps but
2823              * having the fps and timebase differe significantly adds quite some
2824              * overhead
2825              */
2826             if(!strcmp(oc->oformat->name, "avi")) {
2827                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2828                                  && av_q2d(ist->st->time_base) < 1.0/500
2829                     || copy_tb==0){
2830                     codec->time_base = icodec->time_base;
2831                     codec->time_base.num *= icodec->ticks_per_frame;
2832                     codec->time_base.den *= 2;
2833                     codec->ticks_per_frame = 2;
2834                 }
2835             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2836                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2837                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2838             ) {
2839                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2840                                 && av_q2d(ist->st->time_base) < 1.0/500
2841                    || copy_tb==0){
2842                     codec->time_base = icodec->time_base;
2843                     codec->time_base.num *= icodec->ticks_per_frame;
2844                 }
2845             }
2846             av_reduce(&codec->time_base.num, &codec->time_base.den,
2847                         codec->time_base.num, codec->time_base.den, INT_MAX);
2848
2849             switch (codec->codec_type) {
2850             case AVMEDIA_TYPE_AUDIO:
2851                 if (audio_volume != 256) {
2852                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2853                     exit_program(1);
2854                 }
2855                 codec->channel_layout     = icodec->channel_layout;
2856                 codec->sample_rate        = icodec->sample_rate;
2857                 codec->channels           = icodec->channels;
2858                 codec->frame_size         = icodec->frame_size;
2859                 codec->audio_service_type = icodec->audio_service_type;
2860                 codec->block_align        = icodec->block_align;
2861                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2862                     codec->block_align= 0;
2863                 if(codec->codec_id == CODEC_ID_AC3)
2864                     codec->block_align= 0;
2865                 break;
2866             case AVMEDIA_TYPE_VIDEO:
2867                 codec->pix_fmt            = icodec->pix_fmt;
2868                 codec->width              = icodec->width;
2869                 codec->height             = icodec->height;
2870                 codec->has_b_frames       = icodec->has_b_frames;
2871                 if (!codec->sample_aspect_ratio.num) {
2872                     codec->sample_aspect_ratio   =
2873                     ost->st->sample_aspect_ratio =
2874                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2875                         ist->st->codec->sample_aspect_ratio.num ?
2876                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2877                 }
2878                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2879                 break;
2880             case AVMEDIA_TYPE_SUBTITLE:
2881                 codec->width  = icodec->width;
2882                 codec->height = icodec->height;
2883                 break;
2884             case AVMEDIA_TYPE_DATA:
2885             case AVMEDIA_TYPE_ATTACHMENT:
2886                 break;
2887             default:
2888                 abort();
2889             }
2890         } else {
2891             if (!ost->enc)
2892                 ost->enc = avcodec_find_encoder(codec->codec_id);
2893             if (!ost->enc) {
2894                 /* should only happen when a default codec is not present. */
2895                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2896                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2897                 ret = AVERROR(EINVAL);
2898                 goto dump_format;
2899             }
2900
2901             if (ist)
2902                 ist->decoding_needed = 1;
2903             ost->encoding_needed = 1;
2904
2905             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2906                 if (ist && !ost->frame_rate.num)
2907                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2908                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2909                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2910                     ost->frame_rate = ost->enc->supported_framerates[idx];
2911                 }
2912             }
2913
2914             if (!ost->filter &&
2915                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2916                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2917                     FilterGraph *fg;
2918                     fg = init_simple_filtergraph(ist, ost);
2919                     if (configure_filtergraph(fg)) {
2920                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2921                         exit(1);
2922                     }
2923             }
2924
2925             switch (codec->codec_type) {
2926             case AVMEDIA_TYPE_AUDIO:
2927                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2928                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2929                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2930                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2931                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2932                 break;
2933             case AVMEDIA_TYPE_VIDEO:
2934                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2935                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2936                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2937                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2938                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2939                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2940                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2941                 }
2942                 for (j = 0; j < ost->forced_kf_count; j++)
2943                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2944                                                          AV_TIME_BASE_Q,
2945                                                          codec->time_base);
2946
2947                 codec->width  = ost->filter->filter->inputs[0]->w;
2948                 codec->height = ost->filter->filter->inputs[0]->h;
2949                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2950                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2951                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2952                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2953                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2954
2955                 if (!icodec ||
2956                     codec->width   != icodec->width  ||
2957                     codec->height  != icodec->height ||
2958                     codec->pix_fmt != icodec->pix_fmt) {
2959                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2960                 }
2961
2962                 break;
2963             case AVMEDIA_TYPE_SUBTITLE:
2964                 codec->time_base = (AVRational){1, 1000};
2965                 break;
2966             default:
2967                 abort();
2968                 break;
2969             }
2970             /* two pass mode */
2971             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2972                 char logfilename[1024];
2973                 FILE *f;
2974
2975                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2976                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2977                          i);
2978                 if (!strcmp(ost->enc->name, "libx264")) {
2979                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2980                 } else {
2981                     if (codec->flags & CODEC_FLAG_PASS2) {
2982                         char  *logbuffer;
2983                         size_t logbuffer_size;
2984                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2985                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2986                                    logfilename);
2987                             exit_program(1);
2988                         }
2989                         codec->stats_in = logbuffer;
2990                     }
2991                     if (codec->flags & CODEC_FLAG_PASS1) {
2992                         f = fopen(logfilename, "wb");
2993                         if (!f) {
2994                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2995                                 logfilename, strerror(errno));
2996                             exit_program(1);
2997                         }
2998                         ost->logfile = f;
2999                     }
3000                 }
3001             }
3002         }
3003     }
3004
3005     /* open each encoder */
3006     for (i = 0; i < nb_output_streams; i++) {
3007         ost = output_streams[i];
3008         if (ost->encoding_needed) {
3009             AVCodec      *codec = ost->enc;
3010             AVCodecContext *dec = NULL;
3011
3012             if ((ist = get_input_stream(ost)))
3013                 dec = ist->st->codec;
3014             if (dec && dec->subtitle_header) {
3015                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3016                 if (!ost->st->codec->subtitle_header) {
3017                     ret = AVERROR(ENOMEM);
3018                     goto dump_format;
3019                 }
3020                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3021                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3022             }
3023             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3024                 av_dict_set(&ost->opts, "threads", "auto", 0);
3025             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3026                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3027                         ost->file_index, ost->index);
3028                 ret = AVERROR(EINVAL);
3029                 goto dump_format;
3030             }
3031             assert_codec_experimental(ost->st->codec, 1);
3032             assert_avoptions(ost->opts);
3033             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3034                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3035                                              " It takes bits/s as argument, not kbits/s\n");
3036             extra_size += ost->st->codec->extradata_size;
3037
3038             if (ost->st->codec->me_threshold)
3039                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3040         }
3041     }
3042
3043     /* init input streams */
3044     for (i = 0; i < nb_input_streams; i++)
3045         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3046             goto dump_format;
3047
3048     /* discard unused programs */
3049     for (i = 0; i < nb_input_files; i++) {
3050         InputFile *ifile = input_files[i];
3051         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3052             AVProgram *p = ifile->ctx->programs[j];
3053             int discard  = AVDISCARD_ALL;
3054
3055             for (k = 0; k < p->nb_stream_indexes; k++)
3056                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3057                     discard = AVDISCARD_DEFAULT;
3058                     break;
3059                 }
3060             p->discard = discard;
3061         }
3062     }
3063
3064     /* open files and write file headers */
3065     for (i = 0; i < nb_output_files; i++) {
3066         oc = output_files[i]->ctx;
3067         oc->interrupt_callback = int_cb;
3068         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3069             char errbuf[128];
3070             const char *errbuf_ptr = errbuf;
3071             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3072                 errbuf_ptr = strerror(AVUNERROR(ret));
3073             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3074             ret = AVERROR(EINVAL);
3075             goto dump_format;
3076         }
3077 //         assert_avoptions(output_files[i]->opts);
3078         if (strcmp(oc->oformat->name, "rtp")) {
3079             want_sdp = 0;
3080         }
3081     }
3082
3083  dump_format:
3084     /* dump the file output parameters - cannot be done before in case
3085        of stream copy */
3086     for (i = 0; i < nb_output_files; i++) {
3087         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3088     }
3089
3090     /* dump the stream mapping */
3091     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3092     for (i = 0; i < nb_input_streams; i++) {
3093         ist = input_streams[i];
3094
3095         for (j = 0; j < ist->nb_filters; j++) {
3096             if (ist->filters[j]->graph->graph_desc) {
3097                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3098                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3099                        ist->filters[j]->name);
3100                 if (nb_filtergraphs > 1)
3101                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3102                 av_log(NULL, AV_LOG_INFO, "\n");
3103             }
3104         }
3105     }
3106
3107     for (i = 0; i < nb_output_streams; i++) {
3108         ost = output_streams[i];
3109
3110         if (ost->attachment_filename) {
3111             /* an attached file */
3112             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3113                    ost->attachment_filename, ost->file_index, ost->index);
3114             continue;
3115         }
3116
3117         if (ost->filter && ost->filter->graph->graph_desc) {
3118             /* output from a complex graph */
3119             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3120             if (nb_filtergraphs > 1)
3121                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3122
3123             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3124                    ost->index, ost->enc ? ost->enc->name : "?");
3125             continue;
3126         }
3127
3128         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3129                input_streams[ost->source_index]->file_index,
3130                input_streams[ost->source_index]->st->index,
3131                ost->file_index,
3132                ost->index);
3133         if (ost->sync_ist != input_streams[ost->source_index])
3134             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3135                    ost->sync_ist->file_index,
3136                    ost->sync_ist->st->index);
3137         if (ost->stream_copy)
3138             av_log(NULL, AV_LOG_INFO, " (copy)");
3139         else
3140             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3141                    input_streams[ost->source_index]->dec->name : "?",
3142                    ost->enc ? ost->enc->name : "?");
3143         av_log(NULL, AV_LOG_INFO, "\n");
3144     }
3145
3146     if (ret) {
3147         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3148         return ret;
3149     }
3150
3151     if (want_sdp) {
3152         print_sdp();
3153     }
3154
3155     return 0;
3156 }
3157
3158 /**
3159  * @return 1 if there are still streams where more output is wanted,
3160  *         0 otherwise
3161  */
3162 static int need_output(void)
3163 {
3164     int i;
3165
3166     for (i = 0; i < nb_output_streams; i++) {
3167         OutputStream *ost    = output_streams[i];
3168         OutputFile *of       = output_files[ost->file_index];
3169         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3170
3171         if (ost->is_past_recording_time ||
3172             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3173             continue;
3174         if (ost->frame_number >= ost->max_frames) {
3175             int j;
3176             for (j = 0; j < of->ctx->nb_streams; j++)
3177                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3178             continue;
3179         }
3180
3181         return 1;
3182     }
3183
3184     return 0;
3185 }
3186
3187 static int select_input_file(uint8_t *no_packet)
3188 {
3189     int64_t ipts_min = INT64_MAX;
3190     int i, file_index = -1;
3191
3192     for (i = 0; i < nb_input_streams; i++) {
3193         InputStream *ist = input_streams[i];
3194         int64_t ipts     = ist->pts;
3195
3196         if (ist->discard || no_packet[ist->file_index])
3197             continue;
3198         if (!input_files[ist->file_index]->eof_reached) {
3199             if (ipts < ipts_min) {
3200                 ipts_min = ipts;
3201                 file_index = ist->file_index;
3202             }
3203         }
3204     }
3205
3206     return file_index;
3207 }
3208
3209 /*
3210  * The following code is the main loop of the file converter
3211  */
3212 static int transcode(void)
3213 {
3214     int ret, i;
3215     AVFormatContext *is, *os;
3216     OutputStream *ost;
3217     InputStream *ist;
3218     uint8_t *no_packet;
3219     int no_packet_count = 0;
3220     int64_t timer_start;
3221     int key;
3222
3223     if (!(no_packet = av_mallocz(nb_input_files)))
3224         exit_program(1);
3225
3226     ret = transcode_init();
3227     if (ret < 0)
3228         goto fail;
3229
3230     if (!using_stdin) {
3231         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3232     }
3233
3234     timer_start = av_gettime();
3235
3236     for (; received_sigterm == 0;) {
3237         int file_index, ist_index;
3238         AVPacket pkt;
3239         int64_t cur_time= av_gettime();
3240
3241         /* if 'q' pressed, exits */
3242         if (!using_stdin) {
3243             static int64_t last_time;
3244             if (received_nb_signals)
3245                 break;
3246             /* read_key() returns 0 on EOF */
3247             if(cur_time - last_time >= 100000 && !run_as_daemon){
3248                 key =  read_key();
3249                 last_time = cur_time;
3250             }else
3251                 key = -1;
3252             if (key == 'q')
3253                 break;
3254             if (key == '+') av_log_set_level(av_log_get_level()+10);
3255             if (key == '-') av_log_set_level(av_log_get_level()-10);
3256             if (key == 's') qp_hist     ^= 1;
3257             if (key == 'h'){
3258                 if (do_hex_dump){
3259                     do_hex_dump = do_pkt_dump = 0;
3260                 } else if(do_pkt_dump){
3261                     do_hex_dump = 1;
3262                 } else
3263                     do_pkt_dump = 1;
3264                 av_log_set_level(AV_LOG_DEBUG);
3265             }
3266             if (key == 'c' || key == 'C'){
3267                 char buf[4096], target[64], command[256], arg[256] = {0};
3268                 double time;
3269                 int k, n = 0;
3270                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3271                 i = 0;
3272                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3273                     if (k > 0)
3274                         buf[i++] = k;
3275                 buf[i] = 0;
3276                 if (k > 0 &&
3277                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3278                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3279                            target, time, command, arg);
3280                     for (i = 0; i < nb_filtergraphs; i++) {
3281                         FilterGraph *fg = filtergraphs[i];
3282                         if (fg->graph) {
3283                             if (time < 0) {
3284                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3285                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3286                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3287                             } else {
3288                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3289                             }
3290                         }
3291                     }
3292                 } else {
3293                     av_log(NULL, AV_LOG_ERROR,
3294                            "Parse error, at least 3 arguments were expected, "
3295                            "only %d given in string '%s'\n", n, buf);
3296                 }
3297             }
3298             if (key == 'd' || key == 'D'){
3299                 int debug=0;
3300                 if(key == 'D') {
3301                     debug = input_streams[0]->st->codec->debug<<1;
3302                     if(!debug) debug = 1;
3303                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3304                         debug += debug;
3305                 }else
3306                     if(scanf("%d", &debug)!=1)
3307                         fprintf(stderr,"error parsing debug value\n");
3308                 for(i=0;i<nb_input_streams;i++) {
3309                     input_streams[i]->st->codec->debug = debug;
3310                 }
3311                 for(i=0;i<nb_output_streams;i++) {
3312                     ost = output_streams[i];
3313                     ost->st->codec->debug = debug;
3314                 }
3315                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3316                 fprintf(stderr,"debug=%d\n", debug);
3317             }
3318             if (key == '?'){
3319                 fprintf(stderr, "key    function\n"
3320                                 "?      show this help\n"
3321                                 "+      increase verbosity\n"
3322                                 "-      decrease verbosity\n"
3323                                 "c      Send command to filtergraph\n"
3324                                 "D      cycle through available debug modes\n"
3325                                 "h      dump packets/hex press to cycle through the 3 states\n"
3326                                 "q      quit\n"
3327                                 "s      Show QP histogram\n"
3328                 );
3329             }
3330         }
3331
3332         /* check if there's any stream where output is still needed */
3333         if (!need_output()) {
3334             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3335             break;
3336         }
3337
3338         /* select the stream that we must read now */
3339         file_index = select_input_file(no_packet);
3340         /* if none, if is finished */
3341         if (file_index < 0) {
3342             if (no_packet_count) {
3343                 no_packet_count = 0;
3344                 memset(no_packet, 0, nb_input_files);
3345                 usleep(10000);
3346                 continue;
3347             }
3348             break;
3349         }
3350
3351         /* read a frame from it and output it in the fifo */
3352         is  = input_files[file_index]->ctx;
3353         ret = av_read_frame(is, &pkt);
3354         if (ret == AVERROR(EAGAIN)) {
3355             no_packet[file_index] = 1;
3356             no_packet_count++;
3357             continue;
3358         }
3359         if (ret < 0) {
3360             input_files[file_index]->eof_reached = 1;
3361
3362             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3363                 ist = input_streams[input_files[file_index]->ist_index + i];
3364                 if (ist->decoding_needed)
3365                     output_packet(ist, NULL);
3366             }
3367
3368             if (opt_shortest)
3369                 break;
3370             else
3371                 continue;
3372         }
3373
3374         no_packet_count = 0;
3375         memset(no_packet, 0, nb_input_files);
3376
3377         if (do_pkt_dump) {
3378             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3379                              is->streams[pkt.stream_index]);
3380         }
3381         /* the following test is needed in case new streams appear
3382            dynamically in stream : we ignore them */
3383         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3384             goto discard_packet;
3385         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3386         ist = input_streams[ist_index];
3387         if (ist->discard)
3388             goto discard_packet;
3389
3390         if (pkt.dts != AV_NOPTS_VALUE)
3391             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3392         if (pkt.pts != AV_NOPTS_VALUE)
3393             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3394
3395         if (pkt.pts != AV_NOPTS_VALUE)
3396             pkt.pts *= ist->ts_scale;
3397         if (pkt.dts != AV_NOPTS_VALUE)
3398             pkt.dts *= ist->ts_scale;
3399
3400         if (debug_ts) {
3401             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3402                     "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",
3403                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3404                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3405                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3406                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3407                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3408                     input_files[ist->file_index]->ts_offset);
3409         }
3410
3411         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3412             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3413             int64_t delta   = pkt_dts - ist->next_dts;
3414             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3415             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3416                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3417                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3418                 pkt_dts+1<ist->pts){
3419                 input_files[ist->file_index]->ts_offset -= delta;
3420                 av_log(NULL, AV_LOG_DEBUG,
3421                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3422                        delta, input_files[ist->file_index]->ts_offset);
3423                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3424                 if (pkt.pts != AV_NOPTS_VALUE)
3425                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3426             }
3427             } else {
3428                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3429                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3430                      pkt_dts+1<ist->pts){
3431                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3432                     pkt.dts = AV_NOPTS_VALUE;
3433                 }
3434                 if (pkt.pts != AV_NOPTS_VALUE){
3435                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3436                     delta   = pkt_pts - ist->next_dts;
3437                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3438                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3439                         pkt_pts+1<ist->pts) {
3440                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3441                         pkt.pts = AV_NOPTS_VALUE;
3442                     }
3443                 }
3444             }
3445         }
3446
3447         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3448         if ((ret = output_packet(ist, &pkt)) < 0 ||
3449             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3450             char buf[128];
3451             av_strerror(ret, buf, sizeof(buf));
3452             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3453                    ist->file_index, ist->st->index, buf);
3454             if (exit_on_error)
3455                 exit_program(1);
3456             av_free_packet(&pkt);
3457             continue;
3458         }
3459
3460     discard_packet:
3461         av_free_packet(&pkt);
3462
3463         /* dump report by using the output first video and audio streams */
3464         print_report(0, timer_start, cur_time);
3465     }
3466
3467     /* at the end of stream, we must flush the decoder buffers */
3468     for (i = 0; i < nb_input_streams; i++) {
3469         ist = input_streams[i];
3470         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3471             output_packet(ist, NULL);
3472         }
3473     }
3474     poll_filters();
3475     flush_encoders();
3476
3477     term_exit();
3478
3479     /* write the trailer if needed and close file */
3480     for (i = 0; i < nb_output_files; i++) {
3481         os = output_files[i]->ctx;
3482         av_write_trailer(os);
3483     }
3484
3485     /* dump report by using the first video and audio streams */
3486     print_report(1, timer_start, av_gettime());
3487
3488     /* close each encoder */
3489     for (i = 0; i < nb_output_streams; i++) {
3490         ost = output_streams[i];
3491         if (ost->encoding_needed) {
3492             av_freep(&ost->st->codec->stats_in);
3493             avcodec_close(ost->st->codec);
3494         }
3495     }
3496
3497     /* close each decoder */
3498     for (i = 0; i < nb_input_streams; i++) {
3499         ist = input_streams[i];
3500         if (ist->decoding_needed) {
3501             avcodec_close(ist->st->codec);
3502         }
3503     }
3504
3505     /* finished ! */
3506     ret = 0;
3507
3508  fail:
3509     av_freep(&no_packet);
3510
3511     if (output_streams) {
3512         for (i = 0; i < nb_output_streams; i++) {
3513             ost = output_streams[i];
3514             if (ost) {
3515                 if (ost->stream_copy)
3516                     av_freep(&ost->st->codec->extradata);
3517                 if (ost->logfile) {
3518                     fclose(ost->logfile);
3519                     ost->logfile = NULL;
3520                 }
3521                 av_freep(&ost->st->codec->subtitle_header);
3522                 av_free(ost->forced_kf_pts);
3523                 av_dict_free(&ost->opts);
3524             }
3525         }
3526     }
3527     return ret;
3528 }
3529
3530 static int opt_frame_crop(const char *opt, const char *arg)
3531 {
3532     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3533     return AVERROR(EINVAL);
3534 }
3535
3536 static int opt_pad(const char *opt, const char *arg)
3537 {
3538     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3539     return -1;
3540 }
3541
3542 static int opt_video_channel(const char *opt, const char *arg)
3543 {
3544     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3545     return opt_default("channel", arg);
3546 }
3547
3548 static int opt_video_standard(const char *opt, const char *arg)
3549 {
3550     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3551     return opt_default("standard", arg);
3552 }
3553
3554 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3555 {
3556     audio_codec_name = arg;
3557     return parse_option(o, "codec:a", arg, options);
3558 }
3559
3560 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3561 {
3562     video_codec_name = arg;
3563     return parse_option(o, "codec:v", arg, options);
3564 }
3565
3566 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3567 {
3568     subtitle_codec_name = arg;
3569     return parse_option(o, "codec:s", arg, options);
3570 }
3571
3572 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3573 {
3574     return parse_option(o, "codec:d", arg, options);
3575 }
3576
3577 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3578 {
3579     StreamMap *m = NULL;
3580     int i, negative = 0, file_idx;
3581     int sync_file_idx = -1, sync_stream_idx = 0;
3582     char *p, *sync;
3583     char *map;
3584
3585     if (*arg == '-') {
3586         negative = 1;
3587         arg++;
3588     }
3589     map = av_strdup(arg);
3590
3591     /* parse sync stream first, just pick first matching stream */
3592     if (sync = strchr(map, ',')) {
3593         *sync = 0;
3594         sync_file_idx = strtol(sync + 1, &sync, 0);
3595         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3596             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3597             exit_program(1);
3598         }
3599         if (*sync)
3600             sync++;
3601         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3602             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3603                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3604                 sync_stream_idx = i;
3605                 break;
3606             }
3607         if (i == input_files[sync_file_idx]->nb_streams) {
3608             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3609                                        "match any streams.\n", arg);
3610             exit_program(1);
3611         }
3612     }
3613
3614
3615     if (map[0] == '[') {
3616         /* this mapping refers to lavfi output */
3617         const char *c = map + 1;
3618         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3619                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3620         m = &o->stream_maps[o->nb_stream_maps - 1];
3621         m->linklabel = av_get_token(&c, "]");
3622         if (!m->linklabel) {
3623             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3624             exit_program(1);
3625         }
3626     } else {
3627         file_idx = strtol(map, &p, 0);
3628         if (file_idx >= nb_input_files || file_idx < 0) {
3629             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3630             exit_program(1);
3631         }
3632         if (negative)
3633             /* disable some already defined maps */
3634             for (i = 0; i < o->nb_stream_maps; i++) {
3635                 m = &o->stream_maps[i];
3636                 if (file_idx == m->file_index &&
3637                     check_stream_specifier(input_files[m->file_index]->ctx,
3638                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3639                                            *p == ':' ? p + 1 : p) > 0)
3640                     m->disabled = 1;
3641             }
3642         else
3643             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3644                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3645                             *p == ':' ? p + 1 : p) <= 0)
3646                     continue;
3647                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3648                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3649                 m = &o->stream_maps[o->nb_stream_maps - 1];
3650
3651                 m->file_index   = file_idx;
3652                 m->stream_index = i;
3653
3654                 if (sync_file_idx >= 0) {
3655                     m->sync_file_index   = sync_file_idx;
3656                     m->sync_stream_index = sync_stream_idx;
3657                 } else {
3658                     m->sync_file_index   = file_idx;
3659                     m->sync_stream_index = i;
3660                 }
3661             }
3662     }
3663
3664     if (!m) {
3665         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3666         exit_program(1);
3667     }
3668
3669     av_freep(&map);
3670     return 0;
3671 }
3672
3673 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3674 {
3675     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3676                                 &o->nb_attachments, o->nb_attachments + 1);
3677     o->attachments[o->nb_attachments - 1] = arg;
3678     return 0;
3679 }
3680
3681 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3682 {
3683     int n;
3684     AVStream *st;
3685     AudioChannelMap *m;
3686
3687     o->audio_channel_maps =
3688         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3689                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3690     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3691
3692     /* muted channel syntax */
3693     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3694     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3695         m->file_idx = m->stream_idx = -1;
3696         if (n == 1)
3697             m->ofile_idx = m->ostream_idx = -1;
3698         return 0;
3699     }
3700
3701     /* normal syntax */
3702     n = sscanf(arg, "%d.%d.%d:%d.%d",
3703                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3704                &m->ofile_idx, &m->ostream_idx);
3705
3706     if (n != 3 && n != 5) {
3707         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3708                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3709         exit_program(1);
3710     }
3711
3712     if (n != 5) // only file.stream.channel specified
3713         m->ofile_idx = m->ostream_idx = -1;
3714
3715     /* check input */
3716     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3717         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3718                m->file_idx);
3719         exit_program(1);
3720     }
3721     if (m->stream_idx < 0 ||
3722         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3723         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3724                m->file_idx, m->stream_idx);
3725         exit_program(1);
3726     }
3727     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3728     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3729         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3730                m->file_idx, m->stream_idx);
3731         exit_program(1);
3732     }
3733     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3734         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3735                m->file_idx, m->stream_idx, m->channel_idx);
3736         exit_program(1);
3737     }
3738     return 0;
3739 }
3740
3741 /**
3742  * Parse a metadata specifier in arg.
3743  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3744  * @param index for type c/p, chapter/program index is written here
3745  * @param stream_spec for type s, the stream specifier is written here
3746  */
3747 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3748 {
3749     if (*arg) {
3750         *type = *arg;
3751         switch (*arg) {
3752         case 'g':
3753             break;
3754         case 's':
3755             if (*(++arg) && *arg != ':') {
3756                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3757                 exit_program(1);
3758             }
3759             *stream_spec = *arg == ':' ? arg + 1 : "";
3760             break;
3761         case 'c':
3762         case 'p':
3763             if (*(++arg) == ':')
3764                 *index = strtol(++arg, NULL, 0);
3765             break;
3766         default:
3767             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3768             exit_program(1);
3769         }
3770     } else
3771         *type = 'g';
3772 }
3773
3774 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3775 {
3776     AVDictionary **meta_in = NULL;
3777     AVDictionary **meta_out = NULL;
3778     int i, ret = 0;
3779     char type_in, type_out;
3780     const char *istream_spec = NULL, *ostream_spec = NULL;
3781     int idx_in = 0, idx_out = 0;
3782
3783     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3784     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3785
3786     if (!ic) {
3787         if (type_out == 'g' || !*outspec)
3788             o->metadata_global_manual = 1;
3789         if (type_out == 's' || !*outspec)
3790             o->metadata_streams_manual = 1;
3791         if (type_out == 'c' || !*outspec)
3792             o->metadata_chapters_manual = 1;
3793         return 0;
3794     }
3795
3796     if (type_in == 'g' || type_out == 'g')
3797         o->metadata_global_manual = 1;
3798     if (type_in == 's' || type_out == 's')
3799         o->metadata_streams_manual = 1;
3800     if (type_in == 'c' || type_out == 'c')
3801         o->metadata_chapters_manual = 1;
3802
3803 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3804     if ((index) < 0 || (index) >= (nb_elems)) {\
3805         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3806                 (desc), (index));\
3807         exit_program(1);\
3808     }
3809
3810 #define SET_DICT(type, meta, context, index)\
3811         switch (type) {\
3812         case 'g':\
3813             meta = &context->metadata;\
3814             break;\
3815         case 'c':\
3816             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3817             meta = &context->chapters[index]->metadata;\
3818             break;\
3819         case 'p':\
3820             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3821             meta = &context->programs[index]->metadata;\
3822             break;\
3823         }\
3824
3825     SET_DICT(type_in, meta_in, ic, idx_in);
3826     SET_DICT(type_out, meta_out, oc, idx_out);
3827
3828     /* for input streams choose first matching stream */
3829     if (type_in == 's') {
3830         for (i = 0; i < ic->nb_streams; i++) {
3831             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3832                 meta_in = &ic->streams[i]->metadata;
3833                 break;
3834             } else if (ret < 0)
3835                 exit_program(1);
3836         }
3837         if (!meta_in) {
3838             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3839             exit_program(1);
3840         }
3841     }
3842
3843     if (type_out == 's') {
3844         for (i = 0; i < oc->nb_streams; i++) {
3845             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3846                 meta_out = &oc->streams[i]->metadata;
3847                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3848             } else if (ret < 0)
3849                 exit_program(1);
3850         }
3851     } else
3852         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3853
3854     return 0;
3855 }
3856
3857 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3858 {
3859     char buf[128];
3860     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3861     struct tm time = *gmtime((time_t*)&recording_timestamp);
3862     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3863     parse_option(o, "metadata", buf, options);
3864
3865     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3866                                  "tag instead.\n", opt);
3867     return 0;
3868 }
3869
3870 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3871 {
3872     const char *codec_string = encoder ? "encoder" : "decoder";
3873     AVCodec *codec;
3874
3875     codec = encoder ?
3876         avcodec_find_encoder_by_name(name) :
3877         avcodec_find_decoder_by_name(name);
3878     if (!codec) {
3879         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3880         exit_program(1);
3881     }
3882     if (codec->type != type) {
3883         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3884         exit_program(1);
3885     }
3886     return codec;
3887 }
3888
3889 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3890 {
3891     char *codec_name = NULL;
3892
3893     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3894     if (codec_name) {
3895         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3896         st->codec->codec_id = codec->id;
3897         return codec;
3898     } else
3899         return avcodec_find_decoder(st->codec->codec_id);
3900 }
3901
3902 /**
3903  * Add all the streams from the given input file to the global
3904  * list of input streams.
3905  */
3906 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3907 {
3908     int i;
3909     char *next, *codec_tag = NULL;
3910
3911     for (i = 0; i < ic->nb_streams; i++) {
3912         AVStream *st = ic->streams[i];
3913         AVCodecContext *dec = st->codec;
3914         InputStream *ist = av_mallocz(sizeof(*ist));
3915         char *framerate = NULL;
3916
3917         if (!ist)
3918             exit_program(1);
3919
3920         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3921         input_streams[nb_input_streams - 1] = ist;
3922
3923         ist->st = st;
3924         ist->file_index = nb_input_files;
3925         ist->discard = 1;
3926         st->discard  = AVDISCARD_ALL;
3927         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3928
3929         ist->ts_scale = 1.0;
3930         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3931
3932         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3933         if (codec_tag) {
3934             uint32_t tag = strtol(codec_tag, &next, 0);
3935             if (*next)
3936                 tag = AV_RL32(codec_tag);
3937             st->codec->codec_tag = tag;
3938         }
3939
3940         ist->dec = choose_decoder(o, ic, st);
3941
3942         switch (dec->codec_type) {
3943         case AVMEDIA_TYPE_VIDEO:
3944             if(!ist->dec)
3945                 ist->dec = avcodec_find_decoder(dec->codec_id);
3946             if (dec->lowres) {
3947                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3948             }
3949
3950             ist->resample_height  = dec->height;
3951             ist->resample_width   = dec->width;
3952             ist->resample_pix_fmt = dec->pix_fmt;
3953
3954             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
3955             if (framerate && av_parse_video_rate(&ist->framerate,
3956                                                  framerate) < 0) {
3957                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
3958                        framerate);
3959                 exit_program(1);
3960             }
3961
3962             ist->top_field_first = -1;
3963             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
3964
3965             break;
3966         case AVMEDIA_TYPE_AUDIO:
3967             guess_input_channel_layout(ist);
3968
3969             ist->resample_sample_fmt     = dec->sample_fmt;
3970             ist->resample_sample_rate    = dec->sample_rate;
3971             ist->resample_channels       = dec->channels;
3972             ist->resample_channel_layout = dec->channel_layout;
3973
3974             break;
3975         case AVMEDIA_TYPE_DATA:
3976         case AVMEDIA_TYPE_SUBTITLE:
3977             if(!ist->dec)
3978                 ist->dec = avcodec_find_decoder(dec->codec_id);
3979             break;
3980         case AVMEDIA_TYPE_ATTACHMENT:
3981         case AVMEDIA_TYPE_UNKNOWN:
3982             break;
3983         default:
3984             abort();
3985         }
3986     }
3987 }
3988
3989 static void assert_file_overwrite(const char *filename)
3990 {
3991     if ((!file_overwrite || no_file_overwrite) &&
3992         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3993          av_strstart(filename, "file:", NULL))) {
3994         if (avio_check(filename, 0) == 0) {
3995             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3996                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3997                 fflush(stderr);
3998                 term_exit();
3999                 signal(SIGINT, SIG_DFL);
4000                 if (!read_yesno()) {
4001                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4002                     exit_program(1);
4003                 }
4004                 term_init();
4005             }
4006             else {
4007                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4008                 exit_program(1);
4009             }
4010         }
4011     }
4012 }
4013
4014 static void dump_attachment(AVStream *st, const char *filename)
4015 {
4016     int ret;
4017     AVIOContext *out = NULL;
4018     AVDictionaryEntry *e;
4019
4020     if (!st->codec->extradata_size) {
4021         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4022                nb_input_files - 1, st->index);
4023         return;
4024     }
4025     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4026         filename = e->value;
4027     if (!*filename) {
4028         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4029                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4030         exit_program(1);
4031     }
4032
4033     assert_file_overwrite(filename);
4034
4035     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4036         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4037                filename);
4038         exit_program(1);
4039     }
4040
4041     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4042     avio_flush(out);
4043     avio_close(out);
4044 }
4045
4046 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4047 {
4048     AVFormatContext *ic;
4049     AVInputFormat *file_iformat = NULL;
4050     int err, i, ret;
4051     int64_t timestamp;
4052     uint8_t buf[128];
4053     AVDictionary **opts;
4054     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4055
4056     if (o->format) {
4057         if (!(file_iformat = av_find_input_format(o->format))) {
4058             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4059             exit_program(1);
4060         }
4061     }
4062
4063     if (!strcmp(filename, "-"))
4064         filename = "pipe:";
4065
4066     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4067                     !strcmp(filename, "/dev/stdin");
4068
4069     /* get default parameters from command line */
4070     ic = avformat_alloc_context();
4071     if (!ic) {
4072         print_error(filename, AVERROR(ENOMEM));
4073         exit_program(1);
4074     }
4075     if (o->nb_audio_sample_rate) {
4076         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4077         av_dict_set(&format_opts, "sample_rate", buf, 0);
4078     }
4079     if (o->nb_audio_channels) {
4080         /* because we set audio_channels based on both the "ac" and
4081          * "channel_layout" options, we need to check that the specified
4082          * demuxer actually has the "channels" option before setting it */
4083         if (file_iformat && file_iformat->priv_class &&
4084             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4085                         AV_OPT_SEARCH_FAKE_OBJ)) {
4086             snprintf(buf, sizeof(buf), "%d",
4087                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4088             av_dict_set(&format_opts, "channels", buf, 0);
4089         }
4090     }
4091     if (o->nb_frame_rates) {
4092         /* set the format-level framerate option;
4093          * this is important for video grabbers, e.g. x11 */
4094         if (file_iformat && file_iformat->priv_class &&
4095             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4096                         AV_OPT_SEARCH_FAKE_OBJ)) {
4097             av_dict_set(&format_opts, "framerate",
4098                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4099         }
4100     }
4101     if (o->nb_frame_sizes) {
4102         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4103     }
4104     if (o->nb_frame_pix_fmts)
4105         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4106
4107     ic->video_codec_id   = video_codec_name ?
4108         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4109     ic->audio_codec_id   = audio_codec_name ?
4110         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4111     ic->subtitle_codec_id= subtitle_codec_name ?
4112         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4113     ic->flags |= AVFMT_FLAG_NONBLOCK;
4114     ic->interrupt_callback = int_cb;
4115
4116     /* open the input file with generic avformat function */
4117     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4118     if (err < 0) {
4119         print_error(filename, err);
4120         exit_program(1);
4121     }
4122     assert_avoptions(format_opts);
4123
4124     /* apply forced codec ids */
4125     for (i = 0; i < ic->nb_streams; i++)
4126         choose_decoder(o, ic, ic->streams[i]);
4127
4128     /* Set AVCodecContext options for avformat_find_stream_info */
4129     opts = setup_find_stream_info_opts(ic, codec_opts);
4130     orig_nb_streams = ic->nb_streams;
4131
4132     /* If not enough info to get the stream parameters, we decode the
4133        first frames to get it. (used in mpeg case for example) */
4134     ret = avformat_find_stream_info(ic, opts);
4135     if (ret < 0) {
4136         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4137         avformat_close_input(&ic);
4138         exit_program(1);
4139     }
4140
4141     timestamp = o->start_time;
4142     /* add the stream start time */
4143     if (ic->start_time != AV_NOPTS_VALUE)
4144         timestamp += ic->start_time;
4145
4146     /* if seeking requested, we execute it */
4147     if (o->start_time != 0) {
4148         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
4149         if (ret < 0) {
4150             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
4151                    filename, (double)timestamp / AV_TIME_BASE);
4152         }
4153     }
4154
4155     /* update the current parameters so that they match the one of the input stream */
4156     add_input_streams(o, ic);
4157
4158     /* dump the file content */
4159     av_dump_format(ic, nb_input_files, filename, 0);
4160
4161     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
4162     if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
4163         exit_program(1);
4164
4165     input_files[nb_input_files - 1]->ctx        = ic;
4166     input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
4167     input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
4168     input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
4169     input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
4170
4171     for (i = 0; i < o->nb_dump_attachment; i++) {
4172         int j;
4173
4174         for (j = 0; j < ic->nb_streams; j++) {
4175             AVStream *st = ic->streams[j];
4176
4177             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
4178                 dump_attachment(st, o->dump_attachment[i].u.str);
4179         }
4180     }
4181
4182     for (i = 0; i < orig_nb_streams; i++)
4183         av_dict_free(&opts[i]);
4184     av_freep(&opts);
4185
4186     reset_options(o, 1);
4187     return 0;
4188 }
4189
4190 static void parse_forced_key_frames(char *kf, OutputStream *ost)
4191 {
4192     char *p;
4193     int n = 1, i;
4194
4195     for (p = kf; *p; p++)
4196         if (*p == ',')
4197             n++;
4198     ost->forced_kf_count = n;
4199     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
4200     if (!ost->forced_kf_pts) {
4201         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
4202         exit_program(1);
4203     }
4204     p = kf;
4205     for (i = 0; i < n; i++) {
4206         char *next = strchr(p, ',');
4207         if (next) *next++ = 0;
4208         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
4209         p = next;
4210     }
4211 }
4212
4213 static uint8_t *get_line(AVIOContext *s)
4214 {
4215     AVIOContext *line;
4216     uint8_t *buf;
4217     char c;
4218
4219     if (avio_open_dyn_buf(&line) < 0) {
4220         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
4221         exit_program(1);
4222     }
4223
4224     while ((c = avio_r8(s)) && c != '\n')
4225         avio_w8(line, c);
4226     avio_w8(line, 0);
4227     avio_close_dyn_buf(line, &buf);
4228
4229     return buf;
4230 }
4231
4232 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
4233 {
4234     int i, ret = 1;
4235     char filename[1000];
4236     const char *base[3] = { getenv("AVCONV_DATADIR"),
4237                             getenv("HOME"),
4238                             AVCONV_DATADIR,
4239                             };
4240
4241     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
4242         if (!base[i])
4243             continue;
4244         if (codec_name) {
4245             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
4246                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
4247             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4248         }
4249         if (ret) {
4250             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
4251                      i != 1 ? "" : "/.avconv", preset_name);
4252             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
4253         }
4254     }
4255     return ret;
4256 }
4257