avf_concat: fix min value for v option.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #if HAVE_ISATTY
35 #include <unistd.h>
36 #endif
37 #include "libavformat/avformat.h"
38 #include "libavdevice/avdevice.h"
39 #include "libswscale/swscale.h"
40 #include "libswresample/swresample.h"
41 #include "libavutil/opt.h"
42 #include "libavutil/audioconvert.h"
43 #include "libavutil/parseutils.h"
44 #include "libavutil/samplefmt.h"
45 #include "libavutil/colorspace.h"
46 #include "libavutil/fifo.h"
47 #include "libavutil/intreadwrite.h"
48 #include "libavutil/dict.h"
49 #include "libavutil/mathematics.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/avstring.h"
52 #include "libavutil/libm.h"
53 #include "libavutil/imgutils.h"
54 #include "libavutil/timestamp.h"
55 #include "libavutil/bprint.h"
56 #include "libavutil/time.h"
57 #include "libavformat/os_support.h"
58
59 #include "libavformat/ffm.h" // not public API
60
61 # include "libavfilter/avcodec.h"
62 # include "libavfilter/avfilter.h"
63 # include "libavfilter/avfiltergraph.h"
64 # include "libavfilter/buffersrc.h"
65 # include "libavfilter/buffersink.h"
66
67 #if HAVE_SYS_RESOURCE_H
68 #include <sys/types.h>
69 #include <sys/resource.h>
70 #elif HAVE_GETPROCESSTIMES
71 #include <windows.h>
72 #endif
73 #if HAVE_GETPROCESSMEMORYINFO
74 #include <windows.h>
75 #include <psapi.h>
76 #endif
77
78 #if HAVE_SYS_SELECT_H
79 #include <sys/select.h>
80 #endif
81
82 #if HAVE_TERMIOS_H
83 #include <fcntl.h>
84 #include <sys/ioctl.h>
85 #include <sys/time.h>
86 #include <termios.h>
87 #elif HAVE_KBHIT
88 #include <conio.h>
89 #endif
90
91 #if HAVE_PTHREADS
92 #include <pthread.h>
93 #endif
94
95 #include <time.h>
96
97 #include "cmdutils.h"
98
99 #include "libavutil/avassert.h"
100
101 #define VSYNC_AUTO       -1
102 #define VSYNC_PASSTHROUGH 0
103 #define VSYNC_CFR         1
104 #define VSYNC_VFR         2
105 #define VSYNC_DROP        0xff
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 /* select an input stream for an output stream */
111 typedef struct StreamMap {
112     int disabled;           /** 1 is this mapping is disabled by a negative map */
113     int file_index;
114     int stream_index;
115     int sync_file_index;
116     int sync_stream_index;
117     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
118 } StreamMap;
119
120 typedef struct {
121     int  file_idx,  stream_idx,  channel_idx; // input
122     int ofile_idx, ostream_idx;               // output
123 } AudioChannelMap;
124
125 static const OptionDef options[];
126
127 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
128
129 static int frame_bits_per_raw_sample = 0;
130 static int video_discard = 0;
131 static int same_quant = 0;
132 static int do_deinterlace = 0;
133 static int intra_dc_precision = 8;
134 static int qp_hist = 0;
135 static int intra_only = 0;
136 static const char *video_codec_name    = NULL;
137 static const char *audio_codec_name    = NULL;
138 static const char *subtitle_codec_name = NULL;
139
140 static int file_overwrite = 0;
141 static int no_file_overwrite = 0;
142 static int do_benchmark = 0;
143 static int do_benchmark_all = 0;
144 static int do_hex_dump = 0;
145 static int do_pkt_dump = 0;
146 static int do_psnr = 0;
147 static int do_pass = 0;
148 static const char *pass_logfilename_prefix;
149 static int video_sync_method = VSYNC_AUTO;
150 static int audio_sync_method = 0;
151 static float audio_drift_threshold = 0.1;
152 static int copy_ts = 0;
153 static int copy_tb = -1;
154 static int opt_shortest = 0;
155 static char *vstats_filename;
156 static FILE *vstats_file;
157
158 static int audio_volume = 256;
159
160 static int exit_on_error = 0;
161 static int stdin_interaction = 1;
162 static int run_as_daemon  = 0;
163 static volatile int received_nb_signals = 0;
164 static int64_t video_size = 0;
165 static int64_t audio_size = 0;
166 static int64_t subtitle_size = 0;
167 static int64_t extra_size = 0;
168 static int nb_frames_dup = 0;
169 static int nb_frames_drop = 0;
170 static int input_sync;
171
172 static float dts_delta_threshold = 10;
173 static float dts_error_threshold = 3600*30;
174
175 static int print_stats = 1;
176 static int debug_ts = 0;
177 static int current_time;
178 static AVIOContext *progress_avio = NULL;
179
180 static uint8_t *subtitle_out;
181
182 #if HAVE_PTHREADS
183 /* signal to input threads that they should exit; set by the main thread */
184 static int transcoding_finished;
185 #endif
186
187 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
188
189 typedef struct InputFilter {
190     AVFilterContext    *filter;
191     struct InputStream *ist;
192     struct FilterGraph *graph;
193     uint8_t            *name;
194 } InputFilter;
195
196 typedef struct OutputFilter {
197     AVFilterContext     *filter;
198     struct OutputStream *ost;
199     struct FilterGraph  *graph;
200     uint8_t             *name;
201
202     /* temporary storage until stream maps are processed */
203     AVFilterInOut       *out_tmp;
204 } OutputFilter;
205
206 typedef struct FilterGraph {
207     int            index;
208     const char    *graph_desc;
209
210     AVFilterGraph *graph;
211
212     InputFilter   **inputs;
213     int          nb_inputs;
214     OutputFilter **outputs;
215     int         nb_outputs;
216 } FilterGraph;
217
218 typedef struct InputStream {
219     int file_index;
220     AVStream *st;
221     int discard;             /* true if stream data should be discarded */
222     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
223     AVCodec *dec;
224     AVFrame *decoded_frame;
225
226     int64_t       start;     /* time when read started */
227     /* predicted dts of the next packet read for this stream or (when there are
228      * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
229     int64_t       next_dts;
230     int64_t       dts;       ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
231
232     int64_t       next_pts;  ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
233     int64_t       pts;       ///< current pts of the decoded frame  (in AV_TIME_BASE units)
234     double ts_scale;
235     int is_start;            /* is 1 at the start and after a discontinuity */
236     int saw_first_ts;
237     int showed_multi_packet_warning;
238     AVDictionary *opts;
239     AVRational framerate;               /* framerate forced with -r */
240     int top_field_first;
241
242     int resample_height;
243     int resample_width;
244     int resample_pix_fmt;
245
246     int      resample_sample_fmt;
247     int      resample_sample_rate;
248     int      resample_channels;
249     uint64_t resample_channel_layout;
250
251     /* a pool of free buffers for decoded data */
252     FrameBuffer *buffer_pool;
253     int dr1;
254
255     /* decoded data from this stream goes into all those filters
256      * currently video and audio only */
257     InputFilter **filters;
258     int        nb_filters;
259 } InputStream;
260
261 typedef struct InputFile {
262     AVFormatContext *ctx;
263     int eof_reached;      /* true if eof reached */
264     int unavailable;      /* true if the file is unavailable (possibly temporarily) */
265     int ist_index;        /* index of first stream in input_streams */
266     int64_t ts_offset;
267     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
268                              from ctx.nb_streams if new streams appear during av_read_frame() */
269     int nb_streams_warn;  /* number of streams that the user was warned of */
270     int rate_emu;
271
272 #if HAVE_PTHREADS
273     pthread_t thread;           /* thread reading from this file */
274     int finished;               /* the thread has exited */
275     int joined;                 /* the thread has been joined */
276     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
277     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
278     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
279 #endif
280 } InputFile;
281
282 typedef struct OutputStream {
283     int file_index;          /* file index */
284     int index;               /* stream index in the output file */
285     int source_index;        /* InputStream index */
286     AVStream *st;            /* stream in the output file */
287     int encoding_needed;     /* true if encoding needed for this stream */
288     int frame_number;
289     /* input pts and corresponding output pts
290        for A/V sync */
291     struct InputStream *sync_ist; /* input stream to sync against */
292     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
293     /* pts of the first frame encoded for this stream, used for limiting
294      * recording time */
295     int64_t first_pts;
296     AVBitStreamFilterContext *bitstream_filters;
297     AVCodec *enc;
298     int64_t max_frames;
299     AVFrame *filtered_frame;
300
301     /* video only */
302     AVRational frame_rate;
303     int force_fps;
304     int top_field_first;
305
306     float frame_aspect_ratio;
307     float last_quality;
308
309     /* forced key frames */
310     int64_t *forced_kf_pts;
311     int forced_kf_count;
312     int forced_kf_index;
313     char *forced_keyframes;
314
315     /* audio only */
316     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
317     int audio_channels_mapped;           /* number of channels in audio_channels_map */
318
319     FILE *logfile;
320
321     OutputFilter *filter;
322     char *avfilter;
323
324     int64_t sws_flags;
325     int64_t swr_dither_method;
326     double swr_dither_scale;
327     AVDictionary *opts;
328     int is_past_recording_time;
329     int unavailable;  /* true if the steram is unavailable (possibly temporarily) */
330     int stream_copy;
331     const char *attachment_filename;
332     int copy_initial_nonkeyframes;
333
334     int keep_pix_fmt;
335 } OutputStream;
336
337
338 #if HAVE_TERMIOS_H
339
340 /* init terminal so that we can grab keys */
341 static struct termios oldtty;
342 static int restore_tty;
343 #endif
344
345 typedef struct OutputFile {
346     AVFormatContext *ctx;
347     AVDictionary *opts;
348     int ost_index;       /* index of the first stream in output_streams */
349     int64_t recording_time;  ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
350     int64_t start_time;      ///< start time in microseconds == AV_TIME_BASE units
351     uint64_t limit_filesize; /* filesize limit expressed in bytes */
352 } OutputFile;
353
354 static InputStream **input_streams = NULL;
355 static int        nb_input_streams = 0;
356 static InputFile   **input_files   = NULL;
357 static int        nb_input_files   = 0;
358
359 static OutputStream **output_streams = NULL;
360 static int         nb_output_streams = 0;
361 static OutputFile   **output_files   = NULL;
362 static int         nb_output_files   = 0;
363
364 static FilterGraph **filtergraphs;
365 int               nb_filtergraphs;
366
367 typedef struct OptionsContext {
368     /* input/output options */
369     int64_t start_time;
370     const char *format;
371
372     SpecifierOpt *codec_names;
373     int        nb_codec_names;
374     SpecifierOpt *audio_channels;
375     int        nb_audio_channels;
376     SpecifierOpt *audio_sample_rate;
377     int        nb_audio_sample_rate;
378     SpecifierOpt *frame_rates;
379     int        nb_frame_rates;
380     SpecifierOpt *frame_sizes;
381     int        nb_frame_sizes;
382     SpecifierOpt *frame_pix_fmts;
383     int        nb_frame_pix_fmts;
384
385     /* input options */
386     int64_t input_ts_offset;
387     int rate_emu;
388
389     SpecifierOpt *ts_scale;
390     int        nb_ts_scale;
391     SpecifierOpt *dump_attachment;
392     int        nb_dump_attachment;
393
394     /* output options */
395     StreamMap *stream_maps;
396     int     nb_stream_maps;
397     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
398     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
399     int metadata_global_manual;
400     int metadata_streams_manual;
401     int metadata_chapters_manual;
402     const char **attachments;
403     int       nb_attachments;
404
405     int chapters_input_file;
406
407     int64_t recording_time;
408     uint64_t limit_filesize;
409     float mux_preload;
410     float mux_max_delay;
411
412     int video_disable;
413     int audio_disable;
414     int subtitle_disable;
415     int data_disable;
416
417     /* indexed by output file stream index */
418     int   *streamid_map;
419     int nb_streamid_map;
420
421     SpecifierOpt *metadata;
422     int        nb_metadata;
423     SpecifierOpt *max_frames;
424     int        nb_max_frames;
425     SpecifierOpt *bitstream_filters;
426     int        nb_bitstream_filters;
427     SpecifierOpt *codec_tags;
428     int        nb_codec_tags;
429     SpecifierOpt *sample_fmts;
430     int        nb_sample_fmts;
431     SpecifierOpt *qscale;
432     int        nb_qscale;
433     SpecifierOpt *forced_key_frames;
434     int        nb_forced_key_frames;
435     SpecifierOpt *force_fps;
436     int        nb_force_fps;
437     SpecifierOpt *frame_aspect_ratios;
438     int        nb_frame_aspect_ratios;
439     SpecifierOpt *rc_overrides;
440     int        nb_rc_overrides;
441     SpecifierOpt *intra_matrices;
442     int        nb_intra_matrices;
443     SpecifierOpt *inter_matrices;
444     int        nb_inter_matrices;
445     SpecifierOpt *top_field_first;
446     int        nb_top_field_first;
447     SpecifierOpt *metadata_map;
448     int        nb_metadata_map;
449     SpecifierOpt *presets;
450     int        nb_presets;
451     SpecifierOpt *copy_initial_nonkeyframes;
452     int        nb_copy_initial_nonkeyframes;
453     SpecifierOpt *filters;
454     int        nb_filters;
455 } OptionsContext;
456
457 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
458
459 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
460 {\
461     int i, ret;\
462     for (i = 0; i < o->nb_ ## name; i++) {\
463         char *spec = o->name[i].specifier;\
464         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
465             outvar = o->name[i].u.type;\
466         else if (ret < 0)\
467             exit_program(1);\
468     }\
469 }
470
471 static int64_t getutime(void)
472 {
473 #if HAVE_GETRUSAGE
474     struct rusage rusage;
475
476     getrusage(RUSAGE_SELF, &rusage);
477     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
478 #elif HAVE_GETPROCESSTIMES
479     HANDLE proc;
480     FILETIME c, e, k, u;
481     proc = GetCurrentProcess();
482     GetProcessTimes(proc, &c, &e, &k, &u);
483     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
484 #else
485     return av_gettime();
486 #endif
487 }
488
489 static void update_benchmark(const char *fmt, ...)
490 {
491     if (do_benchmark_all) {
492         int64_t t = getutime();
493         va_list va;
494         char buf[1024];
495
496         if (fmt) {
497             va_start(va, fmt);
498             vsnprintf(buf, sizeof(buf), fmt, va);
499             va_end(va);
500             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
501         }
502         current_time = t;
503     }
504 }
505
506 static void reset_options(OptionsContext *o, int is_input)
507 {
508     const OptionDef *po = options;
509     OptionsContext bak= *o;
510     int i;
511
512     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
513     while (po->name) {
514         void *dst = (uint8_t*)o + po->u.off;
515
516         if (po->flags & OPT_SPEC) {
517             SpecifierOpt **so = dst;
518             int i, *count = (int*)(so + 1);
519             for (i = 0; i < *count; i++) {
520                 av_freep(&(*so)[i].specifier);
521                 if (po->flags & OPT_STRING)
522                     av_freep(&(*so)[i].u.str);
523             }
524             av_freep(so);
525             *count = 0;
526         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
527             av_freep(dst);
528         po++;
529     }
530
531     for (i = 0; i < o->nb_stream_maps; i++)
532         av_freep(&o->stream_maps[i].linklabel);
533     av_freep(&o->stream_maps);
534     av_freep(&o->audio_channel_maps);
535     av_freep(&o->streamid_map);
536
537     memset(o, 0, sizeof(*o));
538
539     if (is_input) {
540         o->recording_time = bak.recording_time;
541         if (o->recording_time != INT64_MAX)
542             av_log(NULL, AV_LOG_WARNING,
543                    "-t is not an input option, keeping it for the next output;"
544                    " consider fixing your command line.\n");
545     } else
546         o->recording_time = INT64_MAX;
547     o->mux_max_delay  = 0.7;
548     o->limit_filesize = UINT64_MAX;
549     o->chapters_input_file = INT_MAX;
550
551     uninit_opts();
552     init_opts();
553 }
554
555 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
556 {
557     if (codec && codec->pix_fmts) {
558         const enum PixelFormat *p = codec->pix_fmts;
559         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
560         enum PixelFormat best= PIX_FMT_NONE;
561         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
562             if (st->codec->codec_id == CODEC_ID_MJPEG) {
563                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
564             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
565                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
566                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
567             }
568         }
569         for (; *p != PIX_FMT_NONE; p++) {
570             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
571             if (*p == target)
572                 break;
573         }
574         if (*p == PIX_FMT_NONE) {
575             if (target != PIX_FMT_NONE)
576                 av_log(NULL, AV_LOG_WARNING,
577                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
578                        av_pix_fmt_descriptors[target].name,
579                        codec->name,
580                        av_pix_fmt_descriptors[best].name);
581             return best;
582         }
583     }
584     return target;
585 }
586
587 static char *choose_pix_fmts(OutputStream *ost)
588 {
589      if (ost->keep_pix_fmt) {
590         if (ost->filter)
591             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
592                                             AVFILTER_AUTO_CONVERT_NONE);
593         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
594             return NULL;
595         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
596     }
597     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
598         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
599     } else if (ost->enc && ost->enc->pix_fmts) {
600         const enum PixelFormat *p;
601         AVIOContext *s = NULL;
602         uint8_t *ret;
603         int len;
604
605         if (avio_open_dyn_buf(&s) < 0)
606             exit_program(1);
607
608         p = ost->enc->pix_fmts;
609         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
610             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
611                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
612             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
613                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
614                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
615             }
616         }
617
618         for (; *p != PIX_FMT_NONE; p++) {
619             const char *name = av_get_pix_fmt_name(*p);
620             avio_printf(s, "%s:", name);
621         }
622         len = avio_close_dyn_buf(s, &ret);
623         ret[len - 1] = 0;
624         return ret;
625     } else
626         return NULL;
627 }
628
629 /**
630  * Define a function for building a string containing a list of
631  * allowed formats,
632  */
633 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
634 static char *choose_ ## var ## s(OutputStream *ost)                             \
635 {                                                                               \
636     if (ost->st->codec->var != none) {                                          \
637         get_name(ost->st->codec->var);                                          \
638         return av_strdup(name);                                                 \
639     } else if (ost->enc->supported_list) {                                      \
640         const type *p;                                                          \
641         AVIOContext *s = NULL;                                                  \
642         uint8_t *ret;                                                           \
643         int len;                                                                \
644                                                                                 \
645         if (avio_open_dyn_buf(&s) < 0)                                          \
646             exit_program(1);                                                    \
647                                                                                 \
648         for (p = ost->enc->supported_list; *p != none; p++) {                   \
649             get_name(*p);                                                       \
650             avio_printf(s, "%s" separator, name);                               \
651         }                                                                       \
652         len = avio_close_dyn_buf(s, &ret);                                      \
653         ret[len - 1] = 0;                                                       \
654         return ret;                                                             \
655     } else                                                                      \
656         return NULL;                                                            \
657 }
658
659 #define GET_PIX_FMT_NAME(pix_fmt)\
660     const char *name = av_get_pix_fmt_name(pix_fmt);
661
662 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
663 //                   GET_PIX_FMT_NAME, ":")
664
665 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
666     const char *name = av_get_sample_fmt_name(sample_fmt)
667
668 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
669                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
670
671 #define GET_SAMPLE_RATE_NAME(rate)\
672     char name[16];\
673     snprintf(name, sizeof(name), "%d", rate);
674
675 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
676                   GET_SAMPLE_RATE_NAME, ",")
677
678 #define GET_CH_LAYOUT_NAME(ch_layout)\
679     char name[16];\
680     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
681
682 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
683                   GET_CH_LAYOUT_NAME, ",")
684
685 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
686 {
687     FilterGraph *fg = av_mallocz(sizeof(*fg));
688
689     if (!fg)
690         exit_program(1);
691     fg->index = nb_filtergraphs;
692
693     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
694                              fg->nb_outputs + 1);
695     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
696         exit_program(1);
697     fg->outputs[0]->ost   = ost;
698     fg->outputs[0]->graph = fg;
699
700     ost->filter = fg->outputs[0];
701
702     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
703                             fg->nb_inputs + 1);
704     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
705         exit_program(1);
706     fg->inputs[0]->ist   = ist;
707     fg->inputs[0]->graph = fg;
708
709     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
710                               &ist->nb_filters, ist->nb_filters + 1);
711     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
712
713     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
714                               &nb_filtergraphs, nb_filtergraphs + 1);
715     filtergraphs[nb_filtergraphs - 1] = fg;
716
717     return fg;
718 }
719
720 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
721 {
722     InputStream *ist = NULL;
723     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
724     int i;
725
726     // TODO: support other filter types
727     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
728         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
729                "currently.\n");
730         exit_program(1);
731     }
732
733     if (in->name) {
734         AVFormatContext *s;
735         AVStream       *st = NULL;
736         char *p;
737         int file_idx = strtol(in->name, &p, 0);
738
739         if (file_idx < 0 || file_idx >= nb_input_files) {
740             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
741                    file_idx, fg->graph_desc);
742             exit_program(1);
743         }
744         s = input_files[file_idx]->ctx;
745
746         for (i = 0; i < s->nb_streams; i++) {
747             if (s->streams[i]->codec->codec_type != type)
748                 continue;
749             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
750                 st = s->streams[i];
751                 break;
752             }
753         }
754         if (!st) {
755             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
756                    "matches no streams.\n", p, fg->graph_desc);
757             exit_program(1);
758         }
759         ist = input_streams[input_files[file_idx]->ist_index + st->index];
760     } else {
761         /* find the first unused stream of corresponding type */
762         for (i = 0; i < nb_input_streams; i++) {
763             ist = input_streams[i];
764             if (ist->st->codec->codec_type == type && ist->discard)
765                 break;
766         }
767         if (i == nb_input_streams) {
768             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
769                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
770                    in->filter_ctx->name);
771             exit_program(1);
772         }
773     }
774     av_assert0(ist);
775
776     ist->discard         = 0;
777     ist->decoding_needed = 1;
778     ist->st->discard = AVDISCARD_NONE;
779
780     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
781                             &fg->nb_inputs, fg->nb_inputs + 1);
782     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
783         exit_program(1);
784     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
785     fg->inputs[fg->nb_inputs - 1]->graph = fg;
786
787     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
788                               &ist->nb_filters, ist->nb_filters + 1);
789     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
790 }
791
792 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
793 {
794     char *pix_fmts;
795     OutputStream *ost = ofilter->ost;
796     AVCodecContext *codec = ost->st->codec;
797     AVFilterContext *last_filter = out->filter_ctx;
798     int pad_idx = out->pad_idx;
799     int ret;
800     char name[255];
801     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
802
803     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
804     ret = avfilter_graph_create_filter(&ofilter->filter,
805                                        avfilter_get_by_name("buffersink"),
806                                        name, NULL, NULL/*buffersink_params*/, fg->graph);
807     av_freep(&buffersink_params);
808
809     if (ret < 0)
810         return ret;
811
812     if (codec->width || codec->height) {
813         char args[255];
814         AVFilterContext *filter;
815
816         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
817                  codec->width,
818                  codec->height,
819                  (unsigned)ost->sws_flags);
820         snprintf(name, sizeof(name), "scaler for output stream %d:%d",
821                  ost->file_index, ost->index);
822         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
823                                                 name, args, NULL, fg->graph)) < 0)
824             return ret;
825         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
826             return ret;
827
828         last_filter = filter;
829         pad_idx = 0;
830     }
831
832     if ((pix_fmts = choose_pix_fmts(ost))) {
833         AVFilterContext *filter;
834         snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
835                  ost->file_index, ost->index);
836         if ((ret = avfilter_graph_create_filter(&filter,
837                                                 avfilter_get_by_name("format"),
838                                                 "format", pix_fmts, NULL,
839                                                 fg->graph)) < 0)
840             return ret;
841         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
842             return ret;
843
844         last_filter = filter;
845         pad_idx     = 0;
846         av_freep(&pix_fmts);
847     }
848
849     if (ost->frame_rate.num && 0) {
850         AVFilterContext *fps;
851         char args[255];
852
853         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
854                  ost->frame_rate.den);
855         snprintf(name, sizeof(name), "fps for output stream %d:%d",
856                  ost->file_index, ost->index);
857         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
858                                            name, args, NULL, fg->graph);
859         if (ret < 0)
860             return ret;
861
862         ret = avfilter_link(last_filter, pad_idx, fps, 0);
863         if (ret < 0)
864             return ret;
865         last_filter = fps;
866         pad_idx = 0;
867     }
868
869     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
870         return ret;
871
872     return 0;
873 }
874
875 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
876 {
877     OutputStream *ost = ofilter->ost;
878     AVCodecContext *codec  = ost->st->codec;
879     AVFilterContext *last_filter = out->filter_ctx;
880     int pad_idx = out->pad_idx;
881     char *sample_fmts, *sample_rates, *channel_layouts;
882     char name[255];
883     int ret;
884
885
886     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
887     ret = avfilter_graph_create_filter(&ofilter->filter,
888                                        avfilter_get_by_name("abuffersink"),
889                                        name, NULL, NULL, fg->graph);
890     if (ret < 0)
891         return ret;
892
893 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
894     AVFilterContext *filt_ctx;                                              \
895                                                                             \
896     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
897            "similarly to -af " filter_name "=%s.\n", arg);                  \
898                                                                             \
899     ret = avfilter_graph_create_filter(&filt_ctx,                           \
900                                        avfilter_get_by_name(filter_name),   \
901                                        filter_name, arg, NULL, fg->graph);  \
902     if (ret < 0)                                                            \
903         return ret;                                                         \
904                                                                             \
905     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
906     if (ret < 0)                                                            \
907         return ret;                                                         \
908                                                                             \
909     last_filter = filt_ctx;                                                 \
910     pad_idx = 0;                                                            \
911 } while (0)
912     if (ost->audio_channels_mapped) {
913         int i;
914         AVBPrint pan_buf;
915         av_bprint_init(&pan_buf, 256, 8192);
916         av_bprintf(&pan_buf, "0x%"PRIx64,
917                    av_get_default_channel_layout(ost->audio_channels_mapped));
918         for (i = 0; i < ost->audio_channels_mapped; i++)
919             if (ost->audio_channels_map[i] != -1)
920                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
921
922         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
923         av_bprint_finalize(&pan_buf, NULL);
924     }
925
926     if (codec->channels && !codec->channel_layout)
927         codec->channel_layout = av_get_default_channel_layout(codec->channels);
928
929     sample_fmts     = choose_sample_fmts(ost);
930     sample_rates    = choose_sample_rates(ost);
931     channel_layouts = choose_channel_layouts(ost);
932     if (sample_fmts || sample_rates || channel_layouts) {
933         AVFilterContext *format;
934         char args[256];
935         int len = 0;
936
937         if (sample_fmts)
938             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
939                             sample_fmts);
940         if (sample_rates)
941             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
942                             sample_rates);
943         if (channel_layouts)
944             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
945                             channel_layouts);
946         args[len - 1] = 0;
947
948         av_freep(&sample_fmts);
949         av_freep(&sample_rates);
950         av_freep(&channel_layouts);
951
952         snprintf(name, sizeof(name), "audio format for output stream %d:%d",
953                  ost->file_index, ost->index);
954         ret = avfilter_graph_create_filter(&format,
955                                            avfilter_get_by_name("aformat"),
956                                            name, args, NULL, fg->graph);
957         if (ret < 0)
958             return ret;
959
960         ret = avfilter_link(last_filter, pad_idx, format, 0);
961         if (ret < 0)
962             return ret;
963
964         last_filter = format;
965         pad_idx = 0;
966     }
967
968     if (audio_volume != 256 && 0) {
969         char args[256];
970
971         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
972         AUTO_INSERT_FILTER("-vol", "volume", args);
973     }
974
975     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
976         return ret;
977
978     return 0;
979 }
980
981 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
982 {                                                                  \
983     AVFilterContext *ctx = inout->filter_ctx;                      \
984     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
985     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
986     AVIOContext *pb;                                               \
987                                                                    \
988     if (avio_open_dyn_buf(&pb) < 0)                                \
989         exit_program(1);                                           \
990                                                                    \
991     avio_printf(pb, "%s", ctx->filter->name);                      \
992     if (nb_pads > 1)                                               \
993         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
994     avio_w8(pb, 0);                                                \
995     avio_close_dyn_buf(pb, &f->name);                              \
996 }
997
998 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
999 {
1000     av_freep(&ofilter->name);
1001     DESCRIBE_FILTER_LINK(ofilter, out, 0);
1002
1003     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
1004     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
1005     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
1006     default: av_assert0(0);
1007     }
1008 }
1009
1010 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
1011                                         AVFilterInOut *in)
1012 {
1013     AVFilterContext *first_filter = in->filter_ctx;
1014     AVFilter *filter = avfilter_get_by_name("buffer");
1015     InputStream *ist = ifilter->ist;
1016     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1017                                                       ist->framerate.num} :
1018                                          ist->st->time_base;
1019     AVRational fr = ist->framerate.num ? ist->framerate :
1020                                          ist->st->r_frame_rate;
1021     AVRational sar;
1022     AVBPrint args;
1023     char name[255];
1024     int pad_idx = in->pad_idx;
1025     int ret;
1026
1027     sar = ist->st->sample_aspect_ratio.num ?
1028           ist->st->sample_aspect_ratio :
1029           ist->st->codec->sample_aspect_ratio;
1030     if(!sar.den)
1031         sar = (AVRational){0,1};
1032     av_bprint_init(&args, 0, 1);
1033     av_bprintf(&args,
1034              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1035              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1036              ist->st->codec->height, ist->st->codec->pix_fmt,
1037              tb.num, tb.den, sar.num, sar.den,
1038              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1039     if (fr.num && fr.den)
1040         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1041     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1042              ist->file_index, ist->st->index);
1043
1044     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
1045                                             args.str, NULL, fg->graph)) < 0)
1046         return ret;
1047
1048     if (ist->framerate.num) {
1049         AVFilterContext *setpts;
1050
1051         snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
1052                  ist->file_index, ist->st->index);
1053         if ((ret = avfilter_graph_create_filter(&setpts,
1054                                                 avfilter_get_by_name("setpts"),
1055                                                 name, "N", NULL,
1056                                                 fg->graph)) < 0)
1057             return ret;
1058
1059         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1060             return ret;
1061
1062         first_filter = setpts;
1063         pad_idx = 0;
1064     }
1065
1066     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1067         return ret;
1068     return 0;
1069 }
1070
1071 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1072                                         AVFilterInOut *in)
1073 {
1074     AVFilterContext *first_filter = in->filter_ctx;
1075     AVFilter *filter = avfilter_get_by_name("abuffer");
1076     InputStream *ist = ifilter->ist;
1077     int pad_idx = in->pad_idx;
1078     char args[255], name[255];
1079     int ret;
1080
1081     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1082              ":channel_layout=0x%"PRIx64,
1083              1, ist->st->codec->sample_rate,
1084              ist->st->codec->sample_rate,
1085              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1086              ist->st->codec->channel_layout);
1087     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1088              ist->file_index, ist->st->index);
1089
1090     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1091                                             name, args, NULL,
1092                                             fg->graph)) < 0)
1093         return ret;
1094
1095 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1096     AVFilterContext *filt_ctx;                                              \
1097                                                                             \
1098     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1099            "similarly to -af " filter_name "=%s.\n", arg);                  \
1100                                                                             \
1101     snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
1102                 fg->index, filter_name, ist->file_index, ist->st->index);   \
1103     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1104                                        avfilter_get_by_name(filter_name),   \
1105                                        name, arg, NULL, fg->graph);         \
1106     if (ret < 0)                                                            \
1107         return ret;                                                         \
1108                                                                             \
1109     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1110     if (ret < 0)                                                            \
1111         return ret;                                                         \
1112                                                                             \
1113     first_filter = filt_ctx;                                                  \
1114 } while (0)
1115
1116     if (audio_sync_method > 0) {
1117         char args[256] = {0};
1118
1119         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1120         if (audio_sync_method > 1)
1121             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1122         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1123     }
1124
1125 //     if (ost->audio_channels_mapped) {
1126 //         int i;
1127 //         AVBPrint pan_buf;
1128 //         av_bprint_init(&pan_buf, 256, 8192);
1129 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1130 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1131 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1132 //             if (ost->audio_channels_map[i] != -1)
1133 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1134 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1135 //         av_bprint_finalize(&pan_buf, NULL);
1136 //     }
1137
1138     if (audio_volume != 256) {
1139         char args[256];
1140
1141         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1142         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1143     }
1144     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1145         return ret;
1146
1147     return 0;
1148 }
1149
1150 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1151                                   AVFilterInOut *in)
1152 {
1153     av_freep(&ifilter->name);
1154     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1155
1156     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
1157     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1158     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1159     default: av_assert0(0);
1160     }
1161 }
1162
1163 static int configure_filtergraph(FilterGraph *fg)
1164 {
1165     AVFilterInOut *inputs, *outputs, *cur;
1166     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1167     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1168                                       fg->graph_desc;
1169
1170     avfilter_graph_free(&fg->graph);
1171     if (!(fg->graph = avfilter_graph_alloc()))
1172         return AVERROR(ENOMEM);
1173
1174     if (simple) {
1175         OutputStream *ost = fg->outputs[0]->ost;
1176         char args[255];
1177         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1178         fg->graph->scale_sws_opts = av_strdup(args);
1179     }
1180
1181     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1182         return ret;
1183
1184     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1185         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1186                "exactly one input and output.\n", graph_desc);
1187         return AVERROR(EINVAL);
1188     }
1189
1190     for (cur = inputs; !simple && init && cur; cur = cur->next)
1191         init_input_filter(fg, cur);
1192
1193     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1194         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1195             return ret;
1196     avfilter_inout_free(&inputs);
1197
1198     if (!init || simple) {
1199         /* we already know the mappings between lavfi outputs and output streams,
1200          * so we can finish the setup */
1201         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1202             configure_output_filter(fg, fg->outputs[i], cur);
1203         avfilter_inout_free(&outputs);
1204
1205         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1206             return ret;
1207     } else {
1208         /* wait until output mappings are processed */
1209         for (cur = outputs; cur;) {
1210             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1211                                      &fg->nb_outputs, fg->nb_outputs + 1);
1212             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1213                 exit_program(1);
1214             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1215             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1216             cur = cur->next;
1217             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1218         }
1219     }
1220
1221     return 0;
1222 }
1223
1224 static int configure_complex_filters(void)
1225 {
1226     int i, ret = 0;
1227
1228     for (i = 0; i < nb_filtergraphs; i++)
1229         if (!filtergraphs[i]->graph &&
1230             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1231             return ret;
1232     return 0;
1233 }
1234
1235 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1236 {
1237     int i;
1238     for (i = 0; i < fg->nb_inputs; i++)
1239         if (fg->inputs[i]->ist == ist)
1240             return 1;
1241     return 0;
1242 }
1243
1244 static void term_exit(void)
1245 {
1246     av_log(NULL, AV_LOG_QUIET, "%s", "");
1247 #if HAVE_TERMIOS_H
1248     if(restore_tty)
1249         tcsetattr (0, TCSANOW, &oldtty);
1250 #endif
1251 }
1252
1253 static volatile int received_sigterm = 0;
1254
1255 static void sigterm_handler(int sig)
1256 {
1257     received_sigterm = sig;
1258     received_nb_signals++;
1259     term_exit();
1260     if(received_nb_signals > 3)
1261         exit(123);
1262 }
1263
1264 static void term_init(void)
1265 {
1266 #if HAVE_TERMIOS_H
1267     if(!run_as_daemon){
1268         struct termios tty;
1269         int istty = 1;
1270 #if HAVE_ISATTY
1271         istty = isatty(0) && isatty(2);
1272 #endif
1273         if (istty && tcgetattr (0, &tty) == 0) {
1274             oldtty = tty;
1275             restore_tty = 1;
1276             atexit(term_exit);
1277
1278             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1279                              |INLCR|IGNCR|ICRNL|IXON);
1280             tty.c_oflag |= OPOST;
1281             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1282             tty.c_cflag &= ~(CSIZE|PARENB);
1283             tty.c_cflag |= CS8;
1284             tty.c_cc[VMIN] = 1;
1285             tty.c_cc[VTIME] = 0;
1286
1287             tcsetattr (0, TCSANOW, &tty);
1288         }
1289         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1290     }
1291 #endif
1292     avformat_network_deinit();
1293
1294     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1295     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1296 #ifdef SIGXCPU
1297     signal(SIGXCPU, sigterm_handler);
1298 #endif
1299 }
1300
1301 /* read a key without blocking */
1302 static int read_key(void)
1303 {
1304     unsigned char ch;
1305 #if HAVE_TERMIOS_H
1306     int n = 1;
1307     struct timeval tv;
1308     fd_set rfds;
1309
1310     FD_ZERO(&rfds);
1311     FD_SET(0, &rfds);
1312     tv.tv_sec = 0;
1313     tv.tv_usec = 0;
1314     n = select(1, &rfds, NULL, NULL, &tv);
1315     if (n > 0) {
1316         n = read(0, &ch, 1);
1317         if (n == 1)
1318             return ch;
1319
1320         return n;
1321     }
1322 #elif HAVE_KBHIT
1323 #    if HAVE_PEEKNAMEDPIPE
1324     static int is_pipe;
1325     static HANDLE input_handle;
1326     DWORD dw, nchars;
1327     if(!input_handle){
1328         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1329         is_pipe = !GetConsoleMode(input_handle, &dw);
1330     }
1331
1332     if (stdin->_cnt > 0) {
1333         read(0, &ch, 1);
1334         return ch;
1335     }
1336     if (is_pipe) {
1337         /* When running under a GUI, you will end here. */
1338         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1339             return -1;
1340         //Read it
1341         if(nchars != 0) {
1342             read(0, &ch, 1);
1343             return ch;
1344         }else{
1345             return -1;
1346         }
1347     }
1348 #    endif
1349     if(kbhit())
1350         return(getch());
1351 #endif
1352     return -1;
1353 }
1354
1355 static int decode_interrupt_cb(void *ctx)
1356 {
1357     return received_nb_signals > 1;
1358 }
1359
1360 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1361
1362 void av_noreturn exit_program(int ret)
1363 {
1364     int i, j;
1365
1366     for (i = 0; i < nb_filtergraphs; i++) {
1367         avfilter_graph_free(&filtergraphs[i]->graph);
1368         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1369             av_freep(&filtergraphs[i]->inputs[j]->name);
1370             av_freep(&filtergraphs[i]->inputs[j]);
1371         }
1372         av_freep(&filtergraphs[i]->inputs);
1373         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1374             av_freep(&filtergraphs[i]->outputs[j]->name);
1375             av_freep(&filtergraphs[i]->outputs[j]);
1376         }
1377         av_freep(&filtergraphs[i]->outputs);
1378         av_freep(&filtergraphs[i]);
1379     }
1380     av_freep(&filtergraphs);
1381
1382     av_freep(&subtitle_out);
1383
1384     /* close files */
1385     for (i = 0; i < nb_output_files; i++) {
1386         AVFormatContext *s = output_files[i]->ctx;
1387         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1388             avio_close(s->pb);
1389         avformat_free_context(s);
1390         av_dict_free(&output_files[i]->opts);
1391         av_freep(&output_files[i]);
1392     }
1393     for (i = 0; i < nb_output_streams; i++) {
1394         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1395         while (bsfc) {
1396             AVBitStreamFilterContext *next = bsfc->next;
1397             av_bitstream_filter_close(bsfc);
1398             bsfc = next;
1399         }
1400         output_streams[i]->bitstream_filters = NULL;
1401
1402         av_freep(&output_streams[i]->forced_keyframes);
1403         av_freep(&output_streams[i]->filtered_frame);
1404         av_freep(&output_streams[i]->avfilter);
1405         av_freep(&output_streams[i]);
1406     }
1407     for (i = 0; i < nb_input_files; i++) {
1408         avformat_close_input(&input_files[i]->ctx);
1409         av_freep(&input_files[i]);
1410     }
1411     for (i = 0; i < nb_input_streams; i++) {
1412         av_freep(&input_streams[i]->decoded_frame);
1413         av_dict_free(&input_streams[i]->opts);
1414         free_buffer_pool(&input_streams[i]->buffer_pool);
1415         av_freep(&input_streams[i]->filters);
1416         av_freep(&input_streams[i]);
1417     }
1418
1419     if (vstats_file)
1420         fclose(vstats_file);
1421     av_free(vstats_filename);
1422
1423     av_freep(&input_streams);
1424     av_freep(&input_files);
1425     av_freep(&output_streams);
1426     av_freep(&output_files);
1427
1428     uninit_opts();
1429
1430     avfilter_uninit();
1431     avformat_network_deinit();
1432
1433     if (received_sigterm) {
1434         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1435                (int) received_sigterm);
1436         exit (255);
1437     }
1438
1439     exit(ret);
1440 }
1441
1442 static void assert_avoptions(AVDictionary *m)
1443 {
1444     AVDictionaryEntry *t;
1445     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1446         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1447         exit_program(1);
1448     }
1449 }
1450
1451 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1452 {
1453     const char *codec_string = encoder ? "encoder" : "decoder";
1454     AVCodec *codec;
1455     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1456         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1457         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1458                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1459                 codec_string, c->codec->name);
1460         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1461         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1462             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1463                    codec_string, codec->name);
1464         exit_program(1);
1465     }
1466 }
1467
1468 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1469 {
1470     if (codec && codec->sample_fmts) {
1471         const enum AVSampleFormat *p = codec->sample_fmts;
1472         for (; *p != -1; p++) {
1473             if (*p == st->codec->sample_fmt)
1474                 break;
1475         }
1476         if (*p == -1) {
1477             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1478                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1479             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1480             av_log(NULL, AV_LOG_WARNING,
1481                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1482                    av_get_sample_fmt_name(st->codec->sample_fmt),
1483                    codec->name,
1484                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1485             st->codec->sample_fmt = codec->sample_fmts[0];
1486         }
1487     }
1488 }
1489
1490 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1491 {
1492     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1493     AVCodecContext          *avctx = ost->st->codec;
1494     int ret;
1495
1496     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1497         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1498         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1499
1500     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1501         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1502         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1503             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1504             pkt->pts = pkt->dts = max;
1505         }
1506     }
1507
1508     /*
1509      * Audio encoders may split the packets --  #frames in != #packets out.
1510      * But there is no reordering, so we can limit the number of output packets
1511      * by simply dropping them here.
1512      * Counting encoded video frames needs to be done separately because of
1513      * reordering, see do_video_out()
1514      */
1515     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1516         if (ost->frame_number >= ost->max_frames) {
1517             av_free_packet(pkt);
1518             return;
1519         }
1520         ost->frame_number++;
1521     }
1522
1523     while (bsfc) {
1524         AVPacket new_pkt = *pkt;
1525         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1526                                            &new_pkt.data, &new_pkt.size,
1527                                            pkt->data, pkt->size,
1528                                            pkt->flags & AV_PKT_FLAG_KEY);
1529         if (a > 0) {
1530             av_free_packet(pkt);
1531             new_pkt.destruct = av_destruct_packet;
1532         } else if (a < 0) {
1533             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1534                    bsfc->filter->name, pkt->stream_index,
1535                    avctx->codec ? avctx->codec->name : "copy");
1536             print_error("", a);
1537             if (exit_on_error)
1538                 exit_program(1);
1539         }
1540         *pkt = new_pkt;
1541
1542         bsfc = bsfc->next;
1543     }
1544
1545     pkt->stream_index = ost->index;
1546     ret = av_interleaved_write_frame(s, pkt);
1547     if (ret < 0) {
1548         print_error("av_interleaved_write_frame()", ret);
1549         exit_program(1);
1550     }
1551 }
1552
1553 static int check_recording_time(OutputStream *ost)
1554 {
1555     OutputFile *of = output_files[ost->file_index];
1556
1557     if (of->recording_time != INT64_MAX &&
1558         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1559                       AV_TIME_BASE_Q) >= 0) {
1560         ost->is_past_recording_time = 1;
1561         return 0;
1562     }
1563     return 1;
1564 }
1565
1566 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1567                          AVFrame *frame)
1568 {
1569     AVCodecContext *enc = ost->st->codec;
1570     AVPacket pkt;
1571     int got_packet = 0;
1572
1573     av_init_packet(&pkt);
1574     pkt.data = NULL;
1575     pkt.size = 0;
1576
1577     if (!check_recording_time(ost))
1578         return;
1579
1580     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1581         frame->pts = ost->sync_opts;
1582     ost->sync_opts = frame->pts + frame->nb_samples;
1583
1584     av_assert0(pkt.size || !pkt.data);
1585     update_benchmark(NULL);
1586     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1587         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1588         exit_program(1);
1589     }
1590     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1591
1592     if (got_packet) {
1593         if (pkt.pts != AV_NOPTS_VALUE)
1594             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1595         if (pkt.dts != AV_NOPTS_VALUE)
1596             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1597         if (pkt.duration > 0)
1598             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1599
1600         if (debug_ts) {
1601             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1602                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1603                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1604                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1605         }
1606
1607         write_frame(s, &pkt, ost);
1608
1609         audio_size += pkt.size;
1610         av_free_packet(&pkt);
1611     }
1612 }
1613
1614 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1615 {
1616     AVCodecContext *dec;
1617     AVPicture *picture2;
1618     AVPicture picture_tmp;
1619     uint8_t *buf = 0;
1620
1621     dec = ist->st->codec;
1622
1623     /* deinterlace : must be done before any resize */
1624     if (do_deinterlace) {
1625         int size;
1626
1627         /* create temporary picture */
1628         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1629         buf  = av_malloc(size);
1630         if (!buf)
1631             return;
1632
1633         picture2 = &picture_tmp;
1634         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1635
1636         if (avpicture_deinterlace(picture2, picture,
1637                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1638             /* if error, do not deinterlace */
1639             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1640             av_free(buf);
1641             buf = NULL;
1642             picture2 = picture;
1643         }
1644     } else {
1645         picture2 = picture;
1646     }
1647
1648     if (picture != picture2)
1649         *picture = *picture2;
1650     *bufp = buf;
1651 }
1652
1653 static void do_subtitle_out(AVFormatContext *s,
1654                             OutputStream *ost,
1655                             InputStream *ist,
1656                             AVSubtitle *sub,
1657                             int64_t pts)
1658 {
1659     int subtitle_out_max_size = 1024 * 1024;
1660     int subtitle_out_size, nb, i;
1661     AVCodecContext *enc;
1662     AVPacket pkt;
1663
1664     if (pts == AV_NOPTS_VALUE) {
1665         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1666         if (exit_on_error)
1667             exit_program(1);
1668         return;
1669     }
1670
1671     enc = ost->st->codec;
1672
1673     if (!subtitle_out) {
1674         subtitle_out = av_malloc(subtitle_out_max_size);
1675     }
1676
1677     /* Note: DVB subtitle need one packet to draw them and one other
1678        packet to clear them */
1679     /* XXX: signal it in the codec context ? */
1680     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1681         nb = 2;
1682     else
1683         nb = 1;
1684
1685     for (i = 0; i < nb; i++) {
1686         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1687         if (!check_recording_time(ost))
1688             return;
1689
1690         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1691         // start_display_time is required to be 0
1692         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1693         sub->end_display_time  -= sub->start_display_time;
1694         sub->start_display_time = 0;
1695         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1696                                                     subtitle_out_max_size, sub);
1697         if (subtitle_out_size < 0) {
1698             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1699             exit_program(1);
1700         }
1701
1702         av_init_packet(&pkt);
1703         pkt.data = subtitle_out;
1704         pkt.size = subtitle_out_size;
1705         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1706         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1707         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1708             /* XXX: the pts correction is handled here. Maybe handling
1709                it in the codec would be better */
1710             if (i == 0)
1711                 pkt.pts += 90 * sub->start_display_time;
1712             else
1713                 pkt.pts += 90 * sub->end_display_time;
1714         }
1715         write_frame(s, &pkt, ost);
1716         subtitle_size += pkt.size;
1717     }
1718 }
1719
1720 static void do_video_out(AVFormatContext *s,
1721                          OutputStream *ost,
1722                          AVFrame *in_picture,
1723                          float quality)
1724 {
1725     int ret, format_video_sync;
1726     AVPacket pkt;
1727     AVCodecContext *enc = ost->st->codec;
1728     int nb_frames, i;
1729     double sync_ipts, delta;
1730     double duration = 0;
1731     int frame_size = 0;
1732     InputStream *ist = NULL;
1733
1734     if (ost->source_index >= 0)
1735         ist = input_streams[ost->source_index];
1736
1737     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1738         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1739
1740     sync_ipts = in_picture->pts;
1741     delta = sync_ipts - ost->sync_opts + duration;
1742
1743     /* by default, we output a single frame */
1744     nb_frames = 1;
1745
1746     format_video_sync = video_sync_method;
1747     if (format_video_sync == VSYNC_AUTO)
1748         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1749
1750     switch (format_video_sync) {
1751     case VSYNC_CFR:
1752         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1753         if (delta < -1.1)
1754             nb_frames = 0;
1755         else if (delta > 1.1)
1756             nb_frames = lrintf(delta);
1757         break;
1758     case VSYNC_VFR:
1759         if (delta <= -0.6)
1760             nb_frames = 0;
1761         else if (delta > 0.6)
1762             ost->sync_opts = lrint(sync_ipts);
1763         break;
1764     case VSYNC_DROP:
1765     case VSYNC_PASSTHROUGH:
1766         ost->sync_opts = lrint(sync_ipts);
1767         break;
1768     default:
1769         av_assert0(0);
1770     }
1771
1772     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1773     if (nb_frames == 0) {
1774         nb_frames_drop++;
1775         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1776         return;
1777     } else if (nb_frames > 1) {
1778         if (nb_frames > dts_error_threshold * 30) {
1779             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
1780             nb_frames_drop++;
1781             return;
1782         }
1783         nb_frames_dup += nb_frames - 1;
1784         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1785     }
1786
1787   /* duplicates frame if needed */
1788   for (i = 0; i < nb_frames; i++) {
1789     av_init_packet(&pkt);
1790     pkt.data = NULL;
1791     pkt.size = 0;
1792
1793     in_picture->pts = ost->sync_opts;
1794
1795     if (!check_recording_time(ost))
1796         return;
1797
1798     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1799         enc->codec->id == CODEC_ID_RAWVIDEO) {
1800         /* raw pictures are written as AVPicture structure to
1801            avoid any copies. We support temporarily the older
1802            method. */
1803         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1804         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1805         pkt.data   = (uint8_t *)in_picture;
1806         pkt.size   =  sizeof(AVPicture);
1807         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1808         pkt.flags |= AV_PKT_FLAG_KEY;
1809
1810         write_frame(s, &pkt, ost);
1811         video_size += pkt.size;
1812     } else {
1813         int got_packet;
1814         AVFrame big_picture;
1815
1816         big_picture = *in_picture;
1817         /* better than nothing: use input picture interlaced
1818            settings */
1819         big_picture.interlaced_frame = in_picture->interlaced_frame;
1820         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1821             if (ost->top_field_first == -1)
1822                 big_picture.top_field_first = in_picture->top_field_first;
1823             else
1824                 big_picture.top_field_first = !!ost->top_field_first;
1825         }
1826
1827         /* handles same_quant here. This is not correct because it may
1828            not be a global option */
1829         big_picture.quality = quality;
1830         if (!enc->me_threshold)
1831             big_picture.pict_type = 0;
1832         if (ost->forced_kf_index < ost->forced_kf_count &&
1833             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1834             big_picture.pict_type = AV_PICTURE_TYPE_I;
1835             ost->forced_kf_index++;
1836         }
1837         update_benchmark(NULL);
1838         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1839         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1840         if (ret < 0) {
1841             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1842             exit_program(1);
1843         }
1844
1845         if (got_packet) {
1846             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1847                 pkt.pts = ost->sync_opts;
1848
1849             if (pkt.pts != AV_NOPTS_VALUE)
1850                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1851             if (pkt.dts != AV_NOPTS_VALUE)
1852                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1853
1854             if (debug_ts) {
1855                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1856                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1857                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1858                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1859             }
1860
1861             write_frame(s, &pkt, ost);
1862             frame_size = pkt.size;
1863             video_size += pkt.size;
1864             av_free_packet(&pkt);
1865
1866             /* if two pass, output log */
1867             if (ost->logfile && enc->stats_out) {
1868                 fprintf(ost->logfile, "%s", enc->stats_out);
1869             }
1870         }
1871     }
1872     ost->sync_opts++;
1873     /*
1874      * For video, number of frames in == number of packets out.
1875      * But there may be reordering, so we can't throw away frames on encoder
1876      * flush, we need to limit them here, before they go into encoder.
1877      */
1878     ost->frame_number++;
1879   }
1880
1881     if (vstats_filename && frame_size)
1882         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1883 }
1884
1885 static double psnr(double d)
1886 {
1887     return -10.0 * log(d) / log(10.0);
1888 }
1889
1890 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1891                            int frame_size)
1892 {
1893     AVCodecContext *enc;
1894     int frame_number;
1895     double ti1, bitrate, avg_bitrate;
1896
1897     /* this is executed just the first time do_video_stats is called */
1898     if (!vstats_file) {
1899         vstats_file = fopen(vstats_filename, "w");
1900         if (!vstats_file) {
1901             perror("fopen");
1902             exit_program(1);
1903         }
1904     }
1905
1906     enc = ost->st->codec;
1907     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1908         frame_number = ost->frame_number;
1909         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1910         if (enc->flags&CODEC_FLAG_PSNR)
1911             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1912
1913         fprintf(vstats_file,"f_size= %6d ", frame_size);
1914         /* compute pts value */
1915         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1916         if (ti1 < 0.01)
1917             ti1 = 0.01;
1918
1919         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1920         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1921         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1922                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1923         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1924     }
1925 }
1926
1927 /* check for new output on any of the filtergraphs */
1928 static int poll_filters(void)
1929 {
1930     AVFilterBufferRef *picref;
1931     AVFrame *filtered_frame = NULL;
1932     int i, ret, ret_all;
1933     unsigned nb_success = 1, av_uninit(nb_eof);
1934     int64_t frame_pts;
1935
1936     while (1) {
1937         /* Reap all buffers present in the buffer sinks */
1938         for (i = 0; i < nb_output_streams; i++) {
1939             OutputStream *ost = output_streams[i];
1940             OutputFile    *of = output_files[ost->file_index];
1941             int ret = 0;
1942
1943             if (!ost->filter)
1944                 continue;
1945
1946             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1947                 return AVERROR(ENOMEM);
1948             } else
1949                 avcodec_get_frame_defaults(ost->filtered_frame);
1950             filtered_frame = ost->filtered_frame;
1951
1952             while (1) {
1953                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1954                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
1955                 if (ret < 0) {
1956                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1957                         char buf[256];
1958                         av_strerror(ret, buf, sizeof(buf));
1959                         av_log(NULL, AV_LOG_WARNING,
1960                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1961                     }
1962                     break;
1963                 }
1964                 frame_pts = AV_NOPTS_VALUE;
1965                 if (picref->pts != AV_NOPTS_VALUE) {
1966                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1967                                                     ost->filter->filter->inputs[0]->time_base,
1968                                                     ost->st->codec->time_base) -
1969                                         av_rescale_q(of->start_time,
1970                                                     AV_TIME_BASE_Q,
1971                                                     ost->st->codec->time_base);
1972
1973                     if (of->start_time && filtered_frame->pts < 0) {
1974                         avfilter_unref_buffer(picref);
1975                         continue;
1976                     }
1977                 }
1978                 //if (ost->source_index >= 0)
1979                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1980
1981
1982                 switch (ost->filter->filter->inputs[0]->type) {
1983                 case AVMEDIA_TYPE_VIDEO:
1984                     avfilter_copy_buf_props(filtered_frame, picref);
1985                     filtered_frame->pts = frame_pts;
1986                     if (!ost->frame_aspect_ratio)
1987                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1988
1989                     do_video_out(of->ctx, ost, filtered_frame,
1990                                  same_quant ? ost->last_quality :
1991                                               ost->st->codec->global_quality);
1992                     break;
1993                 case AVMEDIA_TYPE_AUDIO:
1994                     avfilter_copy_buf_props(filtered_frame, picref);
1995                     filtered_frame->pts = frame_pts;
1996                     do_audio_out(of->ctx, ost, filtered_frame);
1997                     break;
1998                 default:
1999                     // TODO support subtitle filters
2000                     av_assert0(0);
2001                 }
2002
2003                 avfilter_unref_buffer(picref);
2004             }
2005         }
2006         if (!nb_success) /* from last round */
2007             break;
2008         /* Request frames through all the graphs */
2009         ret_all = nb_success = nb_eof = 0;
2010         for (i = 0; i < nb_filtergraphs; i++) {
2011             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2012             if (!ret) {
2013                 nb_success++;
2014             } else if (ret == AVERROR_EOF) {
2015                 nb_eof++;
2016             } else if (ret != AVERROR(EAGAIN)) {
2017                 char buf[256];
2018                 av_strerror(ret, buf, sizeof(buf));
2019                 av_log(NULL, AV_LOG_WARNING,
2020                        "Error in request_frame(): %s\n", buf);
2021                 ret_all = ret;
2022             }
2023         }
2024         /* Try again if anything succeeded */
2025     }
2026     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2027 }
2028
2029 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2030 {
2031     char buf[1024];
2032     AVBPrint buf_script;
2033     OutputStream *ost;
2034     AVFormatContext *oc;
2035     int64_t total_size;
2036     AVCodecContext *enc;
2037     int frame_number, vid, i;
2038     double bitrate;
2039     int64_t pts = INT64_MAX;
2040     static int64_t last_time = -1;
2041     static int qp_histogram[52];
2042     int hours, mins, secs, us;
2043
2044     if (!print_stats && !is_last_report && !progress_avio)
2045         return;
2046
2047     if (!is_last_report) {
2048         if (last_time == -1) {
2049             last_time = cur_time;
2050             return;
2051         }
2052         if ((cur_time - last_time) < 500000)
2053             return;
2054         last_time = cur_time;
2055     }
2056
2057
2058     oc = output_files[0]->ctx;
2059
2060     total_size = avio_size(oc->pb);
2061     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2062         total_size = avio_tell(oc->pb);
2063         if (total_size < 0)
2064             total_size = 0;
2065     }
2066
2067     buf[0] = '\0';
2068     vid = 0;
2069     av_bprint_init(&buf_script, 0, 1);
2070     for (i = 0; i < nb_output_streams; i++) {
2071         float q = -1;
2072         ost = output_streams[i];
2073         enc = ost->st->codec;
2074         if (!ost->stream_copy && enc->coded_frame)
2075             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2076         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2077             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2078             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2079                        ost->file_index, ost->index, q);
2080         }
2081         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2082             float fps, t = (cur_time-timer_start) / 1000000.0;
2083
2084             frame_number = ost->frame_number;
2085             fps = t > 1 ? frame_number / t : 0;
2086             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2087                      frame_number, fps < 9.95, fps, q);
2088             av_bprintf(&buf_script, "frame=%d\n", frame_number);
2089             av_bprintf(&buf_script, "fps=%.1f\n", fps);
2090             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2091                        ost->file_index, ost->index, q);
2092             if (is_last_report)
2093                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2094             if (qp_hist) {
2095                 int j;
2096                 int qp = lrintf(q);
2097                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2098                     qp_histogram[qp]++;
2099                 for (j = 0; j < 32; j++)
2100                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2101             }
2102             if (enc->flags&CODEC_FLAG_PSNR) {
2103                 int j;
2104                 double error, error_sum = 0;
2105                 double scale, scale_sum = 0;
2106                 double p;
2107                 char type[3] = { 'Y','U','V' };
2108                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2109                 for (j = 0; j < 3; j++) {
2110                     if (is_last_report) {
2111                         error = enc->error[j];
2112                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2113                     } else {
2114                         error = enc->coded_frame->error[j];
2115                         scale = enc->width * enc->height * 255.0 * 255.0;
2116                     }
2117                     if (j)
2118                         scale /= 4;
2119                     error_sum += error;
2120                     scale_sum += scale;
2121                     p = psnr(error / scale);
2122                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
2123                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
2124                                ost->file_index, ost->index, type[i] | 32, p);
2125                 }
2126                 p = psnr(error_sum / scale_sum);
2127                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2128                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
2129                            ost->file_index, ost->index, p);
2130             }
2131             vid = 1;
2132         }
2133         /* compute min output value */
2134         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2135                                       ost->st->time_base, AV_TIME_BASE_Q));
2136     }
2137
2138     secs = pts / AV_TIME_BASE;
2139     us = pts % AV_TIME_BASE;
2140     mins = secs / 60;
2141     secs %= 60;
2142     hours = mins / 60;
2143     mins %= 60;
2144
2145     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2146
2147     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2148              "size=%8.0fkB time=", total_size / 1024.0);
2149     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2150              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2151              (100 * us) / AV_TIME_BASE);
2152     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2153              "bitrate=%6.1fkbits/s", bitrate);
2154     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
2155     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
2156     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
2157                hours, mins, secs, us);
2158
2159     if (nb_frames_dup || nb_frames_drop)
2160         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2161                 nb_frames_dup, nb_frames_drop);
2162     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
2163     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
2164
2165     if (print_stats || is_last_report) {
2166     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2167
2168     fflush(stderr);
2169     }
2170
2171     if (progress_avio) {
2172         av_bprintf(&buf_script, "progress=%s\n",
2173                    is_last_report ? "end" : "continue");
2174         avio_write(progress_avio, buf_script.str,
2175                    FFMIN(buf_script.len, buf_script.size - 1));
2176         avio_flush(progress_avio);
2177         av_bprint_finalize(&buf_script, NULL);
2178         if (is_last_report) {
2179             avio_close(progress_avio);
2180             progress_avio = NULL;
2181         }
2182     }
2183
2184     if (is_last_report) {
2185         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
2186         av_log(NULL, AV_LOG_INFO, "\n");
2187         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
2188                video_size / 1024.0,
2189                audio_size / 1024.0,
2190                subtitle_size / 1024.0,
2191                extra_size / 1024.0,
2192                100.0 * (total_size - raw) / raw
2193         );
2194         if(video_size + audio_size + subtitle_size + extra_size == 0){
2195             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2196         }
2197     }
2198 }
2199
2200 static void flush_encoders(void)
2201 {
2202     int i, ret;
2203
2204     for (i = 0; i < nb_output_streams; i++) {
2205         OutputStream   *ost = output_streams[i];
2206         AVCodecContext *enc = ost->st->codec;
2207         AVFormatContext *os = output_files[ost->file_index]->ctx;
2208         int stop_encoding = 0;
2209
2210         if (!ost->encoding_needed)
2211             continue;
2212
2213         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2214             continue;
2215         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2216             continue;
2217
2218         for (;;) {
2219             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2220             const char *desc;
2221             int64_t *size;
2222
2223             switch (ost->st->codec->codec_type) {
2224             case AVMEDIA_TYPE_AUDIO:
2225                 encode = avcodec_encode_audio2;
2226                 desc   = "Audio";
2227                 size   = &audio_size;
2228                 break;
2229             case AVMEDIA_TYPE_VIDEO:
2230                 encode = avcodec_encode_video2;
2231                 desc   = "Video";
2232                 size   = &video_size;
2233                 break;
2234             default:
2235                 stop_encoding = 1;
2236             }
2237
2238             if (encode) {
2239                 AVPacket pkt;
2240                 int got_packet;
2241                 av_init_packet(&pkt);
2242                 pkt.data = NULL;
2243                 pkt.size = 0;
2244
2245                 update_benchmark(NULL);
2246                 ret = encode(enc, &pkt, NULL, &got_packet);
2247                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2248                 if (ret < 0) {
2249                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2250                     exit_program(1);
2251                 }
2252                 *size += pkt.size;
2253                 if (ost->logfile && enc->stats_out) {
2254                     fprintf(ost->logfile, "%s", enc->stats_out);
2255                 }
2256                 if (!got_packet) {
2257                     stop_encoding = 1;
2258                     break;
2259                 }
2260                 if (pkt.pts != AV_NOPTS_VALUE)
2261                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2262                 if (pkt.dts != AV_NOPTS_VALUE)
2263                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2264                 write_frame(os, &pkt, ost);
2265             }
2266
2267             if (stop_encoding)
2268                 break;
2269         }
2270     }
2271 }
2272
2273 /*
2274  * Check whether a packet from ist should be written into ost at this time
2275  */
2276 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2277 {
2278     OutputFile *of = output_files[ost->file_index];
2279     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2280
2281     if (ost->source_index != ist_index)
2282         return 0;
2283
2284     if (of->start_time && ist->pts < of->start_time)
2285         return 0;
2286
2287     return 1;
2288 }
2289
2290 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2291 {
2292     OutputFile *of = output_files[ost->file_index];
2293     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2294     AVPicture pict;
2295     AVPacket opkt;
2296
2297     av_init_packet(&opkt);
2298
2299     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2300         !ost->copy_initial_nonkeyframes)
2301         return;
2302
2303     if (of->recording_time != INT64_MAX &&
2304         ist->pts >= of->recording_time + of->start_time) {
2305         ost->is_past_recording_time = 1;
2306         return;
2307     }
2308
2309     /* force the input stream PTS */
2310     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2311         audio_size += pkt->size;
2312     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2313         video_size += pkt->size;
2314         ost->sync_opts++;
2315     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2316         subtitle_size += pkt->size;
2317     }
2318
2319     if (pkt->pts != AV_NOPTS_VALUE)
2320         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2321     else
2322         opkt.pts = AV_NOPTS_VALUE;
2323
2324     if (pkt->dts == AV_NOPTS_VALUE)
2325         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2326     else
2327         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2328     opkt.dts -= ost_tb_start_time;
2329
2330     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2331     opkt.flags    = pkt->flags;
2332
2333     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2334     if (  ost->st->codec->codec_id != CODEC_ID_H264
2335        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2336        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2337        && ost->st->codec->codec_id != CODEC_ID_VC1
2338        ) {
2339         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2340             opkt.destruct = av_destruct_packet;
2341     } else {
2342         opkt.data = pkt->data;
2343         opkt.size = pkt->size;
2344     }
2345     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2346         /* store AVPicture in AVPacket, as expected by the output format */
2347         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2348         opkt.data = (uint8_t *)&pict;
2349         opkt.size = sizeof(AVPicture);
2350         opkt.flags |= AV_PKT_FLAG_KEY;
2351     }
2352
2353     write_frame(of->ctx, &opkt, ost);
2354     ost->st->codec->frame_number++;
2355     av_free_packet(&opkt);
2356 }
2357
2358 static void rate_emu_sleep(InputStream *ist)
2359 {
2360     if (input_files[ist->file_index]->rate_emu) {
2361         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2362         int64_t now = av_gettime() - ist->start;
2363         if (pts > now)
2364             av_usleep(pts - now);
2365     }
2366 }
2367
2368 static int guess_input_channel_layout(InputStream *ist)
2369 {
2370     AVCodecContext *dec = ist->st->codec;
2371
2372     if (!dec->channel_layout) {
2373         char layout_name[256];
2374
2375         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2376         if (!dec->channel_layout)
2377             return 0;
2378         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2379                                      dec->channels, dec->channel_layout);
2380         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2381                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2382     }
2383     return 1;
2384 }
2385
2386 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2387 {
2388     AVFrame *decoded_frame;
2389     AVCodecContext *avctx = ist->st->codec;
2390     int i, ret, resample_changed;
2391     AVRational decoded_frame_tb;
2392
2393     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2394         return AVERROR(ENOMEM);
2395     else
2396         avcodec_get_frame_defaults(ist->decoded_frame);
2397     decoded_frame = ist->decoded_frame;
2398
2399     update_benchmark(NULL);
2400     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2401     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2402     if (ret < 0) {
2403         return ret;
2404     }
2405     if (avctx->sample_rate <= 0) {
2406         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2407         return AVERROR_INVALIDDATA;
2408     }
2409
2410     if (!*got_output) {
2411         /* no audio frame */
2412         if (!pkt->size)
2413             for (i = 0; i < ist->nb_filters; i++)
2414                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2415                                      AV_BUFFERSRC_FLAG_NO_COPY);
2416         return ret;
2417     }
2418
2419 #if 1
2420     /* increment next_dts to use for the case where the input stream does not
2421        have timestamps or there are multiple frames in the packet */
2422     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2423                      avctx->sample_rate;
2424     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2425                      avctx->sample_rate;
2426 #endif
2427
2428     rate_emu_sleep(ist);
2429
2430     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2431                        ist->resample_channels       != avctx->channels               ||
2432                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2433                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2434     if (resample_changed) {
2435         char layout1[64], layout2[64];
2436
2437         if (!guess_input_channel_layout(ist)) {
2438             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2439                    "layout for Input Stream #%d.%d\n", ist->file_index,
2440                    ist->st->index);
2441             exit_program(1);
2442         }
2443         decoded_frame->channel_layout = avctx->channel_layout;
2444
2445         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2446                                      ist->resample_channel_layout);
2447         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2448                                      decoded_frame->channel_layout);
2449
2450         av_log(NULL, AV_LOG_INFO,
2451                "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",
2452                ist->file_index, ist->st->index,
2453                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2454                ist->resample_channels, layout1,
2455                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2456                avctx->channels, layout2);
2457
2458         ist->resample_sample_fmt     = decoded_frame->format;
2459         ist->resample_sample_rate    = decoded_frame->sample_rate;
2460         ist->resample_channel_layout = decoded_frame->channel_layout;
2461         ist->resample_channels       = avctx->channels;
2462
2463         for (i = 0; i < nb_filtergraphs; i++)
2464             if (ist_in_filtergraph(filtergraphs[i], ist)) {
2465                 FilterGraph *fg = filtergraphs[i];
2466                 int j;
2467                 if (configure_filtergraph(fg) < 0) {
2468                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2469                     exit_program(1);
2470                 }
2471                 for (j = 0; j < fg->nb_outputs; j++) {
2472                     OutputStream *ost = fg->outputs[j]->ost;
2473                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2474                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2475                         av_buffersink_set_frame_size(ost->filter->filter,
2476                                                      ost->st->codec->frame_size);
2477                 }
2478             }
2479     }
2480
2481     /* if the decoder provides a pts, use it instead of the last packet pts.
2482        the decoder could be delaying output by a packet or more. */
2483     if (decoded_frame->pts != AV_NOPTS_VALUE) {
2484         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
2485         decoded_frame_tb   = avctx->time_base;
2486     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
2487         decoded_frame->pts = decoded_frame->pkt_pts;
2488         pkt->pts           = AV_NOPTS_VALUE;
2489         decoded_frame_tb   = ist->st->time_base;
2490     } else if (pkt->pts != AV_NOPTS_VALUE) {
2491         decoded_frame->pts = pkt->pts;
2492         pkt->pts           = AV_NOPTS_VALUE;
2493         decoded_frame_tb   = ist->st->time_base;
2494     }else {
2495         decoded_frame->pts = ist->dts;
2496         decoded_frame_tb   = AV_TIME_BASE_Q;
2497     }
2498     if (decoded_frame->pts != AV_NOPTS_VALUE)
2499         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
2500                                           decoded_frame_tb,
2501                                           (AVRational){1, ist->st->codec->sample_rate});
2502     for (i = 0; i < ist->nb_filters; i++)
2503         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2504
2505     decoded_frame->pts = AV_NOPTS_VALUE;
2506
2507     return ret;
2508 }
2509
2510 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2511 {
2512     AVFrame *decoded_frame;
2513     void *buffer_to_free = NULL;
2514     int i, ret = 0, resample_changed;
2515     int64_t best_effort_timestamp;
2516     AVRational *frame_sample_aspect;
2517     float quality;
2518
2519     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2520         return AVERROR(ENOMEM);
2521     else
2522         avcodec_get_frame_defaults(ist->decoded_frame);
2523     decoded_frame = ist->decoded_frame;
2524     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2525
2526     update_benchmark(NULL);
2527     ret = avcodec_decode_video2(ist->st->codec,
2528                                 decoded_frame, got_output, pkt);
2529     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2530     if (ret < 0)
2531         return ret;
2532
2533     quality = same_quant ? decoded_frame->quality : 0;
2534     if (!*got_output) {
2535         /* no picture yet */
2536         if (!pkt->size)
2537             for (i = 0; i < ist->nb_filters; i++)
2538                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2539         return ret;
2540     }
2541
2542     if(ist->top_field_first>=0)
2543         decoded_frame->top_field_first = ist->top_field_first;
2544
2545     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2546     if(best_effort_timestamp != AV_NOPTS_VALUE)
2547         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2548
2549     if (debug_ts) {
2550         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2551                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
2552                 ist->st->index, av_ts2str(decoded_frame->pts),
2553                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2554                 best_effort_timestamp,
2555                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2556                 decoded_frame->key_frame, decoded_frame->pict_type);
2557     }
2558
2559     pkt->size = 0;
2560     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2561
2562     rate_emu_sleep(ist);
2563
2564     if (ist->st->sample_aspect_ratio.num)
2565         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2566
2567     resample_changed = ist->resample_width   != decoded_frame->width  ||
2568                        ist->resample_height  != decoded_frame->height ||
2569                        ist->resample_pix_fmt != decoded_frame->format;
2570     if (resample_changed) {
2571         av_log(NULL, AV_LOG_INFO,
2572                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2573                ist->file_index, ist->st->index,
2574                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2575                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2576
2577         ist->resample_width   = decoded_frame->width;
2578         ist->resample_height  = decoded_frame->height;
2579         ist->resample_pix_fmt = decoded_frame->format;
2580
2581         for (i = 0; i < nb_filtergraphs; i++)
2582             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2583                 configure_filtergraph(filtergraphs[i]) < 0) {
2584                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2585                 exit_program(1);
2586             }
2587     }
2588
2589     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2590     for (i = 0; i < ist->nb_filters; i++) {
2591         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2592                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2593                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2594         // XXX what an ugly hack
2595         if (ist->filters[i]->graph->nb_outputs == 1)
2596             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2597
2598         if (!frame_sample_aspect->num)
2599             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2600         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2601             FrameBuffer      *buf = decoded_frame->opaque;
2602             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2603                                         decoded_frame->data, decoded_frame->linesize,
2604                                         AV_PERM_READ | AV_PERM_PRESERVE,
2605                                         ist->st->codec->width, ist->st->codec->height,
2606                                         ist->st->codec->pix_fmt);
2607
2608             avfilter_copy_frame_props(fb, decoded_frame);
2609             fb->buf->priv           = buf;
2610             fb->buf->free           = filter_release_buffer;
2611
2612             av_assert0(buf->refcount>0);
2613             buf->refcount++;
2614             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2615                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2616                                  AV_BUFFERSRC_FLAG_NO_COPY);
2617         } else
2618         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2619             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2620             exit_program(1);
2621         }
2622
2623     }
2624
2625     av_free(buffer_to_free);
2626     return ret;
2627 }
2628
2629 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2630 {
2631     AVSubtitle subtitle;
2632     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2633                                           &subtitle, got_output, pkt);
2634     if (ret < 0)
2635         return ret;
2636     if (!*got_output)
2637         return ret;
2638
2639     rate_emu_sleep(ist);
2640
2641     for (i = 0; i < nb_output_streams; i++) {
2642         OutputStream *ost = output_streams[i];
2643
2644         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2645             continue;
2646
2647         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2648     }
2649
2650     avsubtitle_free(&subtitle);
2651     return ret;
2652 }
2653
2654 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2655 static int output_packet(InputStream *ist, const AVPacket *pkt)
2656 {
2657     int ret = 0, i;
2658     int got_output;
2659
2660     AVPacket avpkt;
2661     if (!ist->saw_first_ts) {
2662         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;
2663         ist->pts = 0;
2664         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2665             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2666             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2667         }
2668         ist->saw_first_ts = 1;
2669     }
2670
2671     if (ist->next_dts == AV_NOPTS_VALUE)
2672         ist->next_dts = ist->dts;
2673     if (ist->next_pts == AV_NOPTS_VALUE)
2674         ist->next_pts = ist->pts;
2675
2676     if (pkt == NULL) {
2677         /* EOF handling */
2678         av_init_packet(&avpkt);
2679         avpkt.data = NULL;
2680         avpkt.size = 0;
2681         goto handle_eof;
2682     } else {
2683         avpkt = *pkt;
2684     }
2685
2686     if (pkt->dts != AV_NOPTS_VALUE) {
2687         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2688         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2689             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2690     }
2691
2692     // while we have more to decode or while the decoder did output something on EOF
2693     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2694         int duration;
2695     handle_eof:
2696
2697         ist->pts = ist->next_pts;
2698         ist->dts = ist->next_dts;
2699
2700         if (avpkt.size && avpkt.size != pkt->size) {
2701             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2702                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2703             ist->showed_multi_packet_warning = 1;
2704         }
2705
2706         switch (ist->st->codec->codec_type) {
2707         case AVMEDIA_TYPE_AUDIO:
2708             ret = decode_audio    (ist, &avpkt, &got_output);
2709             break;
2710         case AVMEDIA_TYPE_VIDEO:
2711             ret = decode_video    (ist, &avpkt, &got_output);
2712             if (avpkt.duration) {
2713                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2714             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2715                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2716                 duration = ((int64_t)AV_TIME_BASE *
2717                                 ist->st->codec->time_base.num * ticks) /
2718                                 ist->st->codec->time_base.den;
2719             } else
2720                 duration = 0;
2721
2722             if(ist->dts != AV_NOPTS_VALUE && duration) {
2723                 ist->next_dts += duration;
2724             }else
2725                 ist->next_dts = AV_NOPTS_VALUE;
2726
2727             if (got_output)
2728                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2729             break;
2730         case AVMEDIA_TYPE_SUBTITLE:
2731             ret = transcode_subtitles(ist, &avpkt, &got_output);
2732             break;
2733         default:
2734             return -1;
2735         }
2736
2737         if (ret < 0)
2738             return ret;
2739
2740         avpkt.dts=
2741         avpkt.pts= AV_NOPTS_VALUE;
2742
2743         // touch data and size only if not EOF
2744         if (pkt) {
2745             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2746                 ret = avpkt.size;
2747             avpkt.data += ret;
2748             avpkt.size -= ret;
2749         }
2750         if (!got_output) {
2751             continue;
2752         }
2753     }
2754
2755     /* handle stream copy */
2756     if (!ist->decoding_needed) {
2757         rate_emu_sleep(ist);
2758         ist->dts = ist->next_dts;
2759         switch (ist->st->codec->codec_type) {
2760         case AVMEDIA_TYPE_AUDIO:
2761             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2762                              ist->st->codec->sample_rate;
2763             break;
2764         case AVMEDIA_TYPE_VIDEO:
2765             if (pkt->duration) {
2766                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2767             } else if(ist->st->codec->time_base.num != 0) {
2768                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2769                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2770                                   ist->st->codec->time_base.num * ticks) /
2771                                   ist->st->codec->time_base.den;
2772             }
2773             break;
2774         }
2775         ist->pts = ist->dts;
2776         ist->next_pts = ist->next_dts;
2777     }
2778     for (i = 0; pkt && i < nb_output_streams; i++) {
2779         OutputStream *ost = output_streams[i];
2780
2781         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2782             continue;
2783
2784         do_streamcopy(ist, ost, pkt);
2785     }
2786
2787     return 0;
2788 }
2789
2790 static void print_sdp(void)
2791 {
2792     char sdp[2048];
2793     int i;
2794     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2795
2796     if (!avc)
2797         exit_program(1);
2798     for (i = 0; i < nb_output_files; i++)
2799         avc[i] = output_files[i]->ctx;
2800
2801     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2802     printf("SDP:\n%s\n", sdp);
2803     fflush(stdout);
2804     av_freep(&avc);
2805 }
2806
2807 static int init_input_stream(int ist_index, char *error, int error_len)
2808 {
2809     InputStream *ist = input_streams[ist_index];
2810
2811     if (ist->decoding_needed) {
2812         AVCodec *codec = ist->dec;
2813         if (!codec) {
2814             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2815                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2816             return AVERROR(EINVAL);
2817         }
2818
2819         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2820         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2821             ist->st->codec->get_buffer     = codec_get_buffer;
2822             ist->st->codec->release_buffer = codec_release_buffer;
2823             ist->st->codec->opaque         = &ist->buffer_pool;
2824         }
2825
2826         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2827             av_dict_set(&ist->opts, "threads", "auto", 0);
2828         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2829             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2830                     ist->file_index, ist->st->index);
2831             return AVERROR(EINVAL);
2832         }
2833         assert_codec_experimental(ist->st->codec, 0);
2834         assert_avoptions(ist->opts);
2835     }
2836
2837     ist->next_pts = AV_NOPTS_VALUE;
2838     ist->next_dts = AV_NOPTS_VALUE;
2839     ist->is_start = 1;
2840
2841     return 0;
2842 }
2843
2844 static InputStream *get_input_stream(OutputStream *ost)
2845 {
2846     if (ost->source_index >= 0)
2847         return input_streams[ost->source_index];
2848     return NULL;
2849 }
2850
2851 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2852                                     AVCodecContext *avctx)
2853 {
2854     char *p;
2855     int n = 1, i;
2856     int64_t t;
2857
2858     for (p = kf; *p; p++)
2859         if (*p == ',')
2860             n++;
2861     ost->forced_kf_count = n;
2862     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2863     if (!ost->forced_kf_pts) {
2864         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2865         exit_program(1);
2866     }
2867
2868     p = kf;
2869     for (i = 0; i < n; i++) {
2870         char *next = strchr(p, ',');
2871
2872         if (next)
2873             *next++ = 0;
2874
2875         t = parse_time_or_die("force_key_frames", p, 1);
2876         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2877
2878         p = next;
2879     }
2880 }
2881
2882 static void report_new_stream(int input_index, AVPacket *pkt)
2883 {
2884     InputFile *file = input_files[input_index];
2885     AVStream *st = file->ctx->streams[pkt->stream_index];
2886
2887     if (pkt->stream_index < file->nb_streams_warn)
2888         return;
2889     av_log(file->ctx, AV_LOG_WARNING,
2890            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2891            av_get_media_type_string(st->codec->codec_type),
2892            input_index, pkt->stream_index,
2893            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2894     file->nb_streams_warn = pkt->stream_index + 1;
2895 }
2896
2897 static int transcode_init(void)
2898 {
2899     int ret = 0, i, j, k;
2900     AVFormatContext *oc;
2901     AVCodecContext *codec, *icodec = NULL;
2902     OutputStream *ost;
2903     InputStream *ist;
2904     char error[1024];
2905     int want_sdp = 1;
2906
2907     /* init framerate emulation */
2908     for (i = 0; i < nb_input_files; i++) {
2909         InputFile *ifile = input_files[i];
2910         if (ifile->rate_emu)
2911             for (j = 0; j < ifile->nb_streams; j++)
2912                 input_streams[j + ifile->ist_index]->start = av_gettime();
2913     }
2914
2915     /* output stream init */
2916     for (i = 0; i < nb_output_files; i++) {
2917         oc = output_files[i]->ctx;
2918         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2919             av_dump_format(oc, i, oc->filename, 1);
2920             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2921             return AVERROR(EINVAL);
2922         }
2923     }
2924
2925     /* init complex filtergraphs */
2926     for (i = 0; i < nb_filtergraphs; i++)
2927         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2928             return ret;
2929
2930     /* for each output stream, we compute the right encoding parameters */
2931     for (i = 0; i < nb_output_streams; i++) {
2932         ost = output_streams[i];
2933         oc  = output_files[ost->file_index]->ctx;
2934         ist = get_input_stream(ost);
2935
2936         if (ost->attachment_filename)
2937             continue;
2938
2939         codec  = ost->st->codec;
2940
2941         if (ist) {
2942             icodec = ist->st->codec;
2943
2944             ost->st->disposition          = ist->st->disposition;
2945             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2946             codec->chroma_sample_location = icodec->chroma_sample_location;
2947         }
2948
2949         if (ost->stream_copy) {
2950             uint64_t extra_size;
2951
2952             av_assert0(ist && !ost->filter);
2953
2954             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2955
2956             if (extra_size > INT_MAX) {
2957                 return AVERROR(EINVAL);
2958             }
2959
2960             /* if stream_copy is selected, no need to decode or encode */
2961             codec->codec_id   = icodec->codec_id;
2962             codec->codec_type = icodec->codec_type;
2963
2964             if (!codec->codec_tag) {
2965                 if (!oc->oformat->codec_tag ||
2966                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2967                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2968                     codec->codec_tag = icodec->codec_tag;
2969             }
2970
2971             codec->bit_rate       = icodec->bit_rate;
2972             codec->rc_max_rate    = icodec->rc_max_rate;
2973             codec->rc_buffer_size = icodec->rc_buffer_size;
2974             codec->field_order    = icodec->field_order;
2975             codec->extradata      = av_mallocz(extra_size);
2976             if (!codec->extradata) {
2977                 return AVERROR(ENOMEM);
2978             }
2979             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2980             codec->extradata_size= icodec->extradata_size;
2981             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2982
2983             codec->time_base = ist->st->time_base;
2984             /*
2985              * Avi is a special case here because it supports variable fps but
2986              * having the fps and timebase differe significantly adds quite some
2987              * overhead
2988              */
2989             if(!strcmp(oc->oformat->name, "avi")) {
2990                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2991                                  && av_q2d(ist->st->time_base) < 1.0/500
2992                     || copy_tb==0){
2993                     codec->time_base = icodec->time_base;
2994                     codec->time_base.num *= icodec->ticks_per_frame;
2995                     codec->time_base.den *= 2;
2996                     codec->ticks_per_frame = 2;
2997                 }
2998             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2999                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
3000                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
3001             ) {
3002                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
3003                                 && av_q2d(ist->st->time_base) < 1.0/500
3004                    || copy_tb==0){
3005                     codec->time_base = icodec->time_base;
3006                     codec->time_base.num *= icodec->ticks_per_frame;
3007                 }
3008             }
3009
3010             if(ost->frame_rate.num)
3011                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3012
3013             av_reduce(&codec->time_base.num, &codec->time_base.den,
3014                         codec->time_base.num, codec->time_base.den, INT_MAX);
3015
3016             switch (codec->codec_type) {
3017             case AVMEDIA_TYPE_AUDIO:
3018                 if (audio_volume != 256) {
3019                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3020                     exit_program(1);
3021                 }
3022                 codec->channel_layout     = icodec->channel_layout;
3023                 codec->sample_rate        = icodec->sample_rate;
3024                 codec->channels           = icodec->channels;
3025                 codec->frame_size         = icodec->frame_size;
3026                 codec->audio_service_type = icodec->audio_service_type;
3027                 codec->block_align        = icodec->block_align;
3028                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == CODEC_ID_MP3)
3029                     codec->block_align= 0;
3030                 if(codec->codec_id == CODEC_ID_AC3)
3031                     codec->block_align= 0;
3032                 break;
3033             case AVMEDIA_TYPE_VIDEO:
3034                 codec->pix_fmt            = icodec->pix_fmt;
3035                 codec->width              = icodec->width;
3036                 codec->height             = icodec->height;
3037                 codec->has_b_frames       = icodec->has_b_frames;
3038                 if (!codec->sample_aspect_ratio.num) {
3039                     codec->sample_aspect_ratio   =
3040                     ost->st->sample_aspect_ratio =
3041                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3042                         ist->st->codec->sample_aspect_ratio.num ?
3043                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3044                 }
3045                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3046                 break;
3047             case AVMEDIA_TYPE_SUBTITLE:
3048                 codec->width  = icodec->width;
3049                 codec->height = icodec->height;
3050                 break;
3051             case AVMEDIA_TYPE_DATA:
3052             case AVMEDIA_TYPE_ATTACHMENT:
3053                 break;
3054             default:
3055                 abort();
3056             }
3057         } else {
3058             if (!ost->enc)
3059                 ost->enc = avcodec_find_encoder(codec->codec_id);
3060             if (!ost->enc) {
3061                 /* should only happen when a default codec is not present. */
3062                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3063                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3064                 ret = AVERROR(EINVAL);
3065                 goto dump_format;
3066             }
3067
3068             if (ist)
3069                 ist->decoding_needed = 1;
3070             ost->encoding_needed = 1;
3071
3072             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3073                 if (ost->filter && !ost->frame_rate.num)
3074                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
3075                 if (ist && !ost->frame_rate.num)
3076                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3077                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3078                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3079                     ost->frame_rate = ost->enc->supported_framerates[idx];
3080                 }
3081             }
3082
3083             if (!ost->filter &&
3084                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3085                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3086                     FilterGraph *fg;
3087                     fg = init_simple_filtergraph(ist, ost);
3088                     if (configure_filtergraph(fg)) {
3089                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3090                         exit(1);
3091                     }
3092             }
3093
3094             switch (codec->codec_type) {
3095             case AVMEDIA_TYPE_AUDIO:
3096                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3097                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3098                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3099                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3100                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3101                 break;
3102             case AVMEDIA_TYPE_VIDEO:
3103                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3104                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
3105                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
3106                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3107                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3108                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3109                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3110                 }
3111                 for (j = 0; j < ost->forced_kf_count; j++)
3112                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3113                                                          AV_TIME_BASE_Q,
3114                                                          codec->time_base);
3115
3116                 codec->width  = ost->filter->filter->inputs[0]->w;
3117                 codec->height = ost->filter->filter->inputs[0]->h;
3118                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3119                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3120                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3121                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3122                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3123
3124                 if (!icodec ||
3125                     codec->width   != icodec->width  ||
3126                     codec->height  != icodec->height ||
3127                     codec->pix_fmt != icodec->pix_fmt) {
3128                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3129                 }
3130
3131                 if (ost->forced_keyframes)
3132                     parse_forced_key_frames(ost->forced_keyframes, ost,
3133                                             ost->st->codec);
3134                 break;
3135             case AVMEDIA_TYPE_SUBTITLE:
3136                 codec->time_base = (AVRational){1, 1000};
3137                 break;
3138             default:
3139                 abort();
3140                 break;
3141             }
3142             /* two pass mode */
3143             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3144                 char logfilename[1024];
3145                 FILE *f;
3146
3147                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3148                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3149                          i);
3150                 if (!strcmp(ost->enc->name, "libx264")) {
3151                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3152                 } else {
3153                     if (codec->flags & CODEC_FLAG_PASS2) {
3154                         char  *logbuffer;
3155                         size_t logbuffer_size;
3156                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3157                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3158                                    logfilename);
3159                             exit_program(1);
3160                         }
3161                         codec->stats_in = logbuffer;
3162                     }
3163                     if (codec->flags & CODEC_FLAG_PASS1) {
3164                         f = fopen(logfilename, "wb");
3165                         if (!f) {
3166                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3167                                 logfilename, strerror(errno));
3168                             exit_program(1);
3169                         }
3170                         ost->logfile = f;
3171                     }
3172                 }
3173             }
3174         }
3175     }
3176
3177     /* open each encoder */
3178     for (i = 0; i < nb_output_streams; i++) {
3179         ost = output_streams[i];
3180         if (ost->encoding_needed) {
3181             AVCodec      *codec = ost->enc;
3182             AVCodecContext *dec = NULL;
3183
3184             if ((ist = get_input_stream(ost)))
3185                 dec = ist->st->codec;
3186             if (dec && dec->subtitle_header) {
3187                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3188                 if (!ost->st->codec->subtitle_header) {
3189                     ret = AVERROR(ENOMEM);
3190                     goto dump_format;
3191                 }
3192                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3193                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3194             }
3195             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3196                 av_dict_set(&ost->opts, "threads", "auto", 0);
3197             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3198                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3199                         ost->file_index, ost->index);
3200                 ret = AVERROR(EINVAL);
3201                 goto dump_format;
3202             }
3203             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3204                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3205                 av_buffersink_set_frame_size(ost->filter->filter,
3206                                              ost->st->codec->frame_size);
3207             assert_codec_experimental(ost->st->codec, 1);
3208             assert_avoptions(ost->opts);
3209             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3210                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3211                                              " It takes bits/s as argument, not kbits/s\n");
3212             extra_size += ost->st->codec->extradata_size;
3213
3214             if (ost->st->codec->me_threshold)
3215                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3216         }
3217     }
3218
3219     /* init input streams */
3220     for (i = 0; i < nb_input_streams; i++)
3221         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3222             goto dump_format;
3223
3224     /* discard unused programs */
3225     for (i = 0; i < nb_input_files; i++) {
3226         InputFile *ifile = input_files[i];
3227         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3228             AVProgram *p = ifile->ctx->programs[j];
3229             int discard  = AVDISCARD_ALL;
3230
3231             for (k = 0; k < p->nb_stream_indexes; k++)
3232                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3233                     discard = AVDISCARD_DEFAULT;
3234                     break;
3235                 }
3236             p->discard = discard;
3237         }
3238     }
3239
3240     /* open files and write file headers */
3241     for (i = 0; i < nb_output_files; i++) {
3242         oc = output_files[i]->ctx;
3243         oc->interrupt_callback = int_cb;
3244         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3245             char errbuf[128];
3246             const char *errbuf_ptr = errbuf;
3247             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3248                 errbuf_ptr = strerror(AVUNERROR(ret));
3249             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3250             ret = AVERROR(EINVAL);
3251             goto dump_format;
3252         }
3253 //         assert_avoptions(output_files[i]->opts);
3254         if (strcmp(oc->oformat->name, "rtp")) {
3255             want_sdp = 0;
3256         }
3257     }
3258
3259  dump_format:
3260     /* dump the file output parameters - cannot be done before in case
3261        of stream copy */
3262     for (i = 0; i < nb_output_files; i++) {
3263         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3264     }
3265
3266     /* dump the stream mapping */
3267     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3268     for (i = 0; i < nb_input_streams; i++) {
3269         ist = input_streams[i];
3270
3271         for (j = 0; j < ist->nb_filters; j++) {
3272             if (ist->filters[j]->graph->graph_desc) {
3273                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3274                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3275                        ist->filters[j]->name);
3276                 if (nb_filtergraphs > 1)
3277                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3278                 av_log(NULL, AV_LOG_INFO, "\n");
3279             }
3280         }
3281     }
3282
3283     for (i = 0; i < nb_output_streams; i++) {
3284         ost = output_streams[i];
3285
3286         if (ost->attachment_filename) {
3287             /* an attached file */
3288             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3289                    ost->attachment_filename, ost->file_index, ost->index);
3290             continue;
3291         }
3292
3293         if (ost->filter && ost->filter->graph->graph_desc) {
3294             /* output from a complex graph */
3295             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3296             if (nb_filtergraphs > 1)
3297                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3298
3299             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3300                    ost->index, ost->enc ? ost->enc->name : "?");
3301             continue;
3302         }
3303
3304         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3305                input_streams[ost->source_index]->file_index,
3306                input_streams[ost->source_index]->st->index,
3307                ost->file_index,
3308                ost->index);
3309         if (ost->sync_ist != input_streams[ost->source_index])
3310             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3311                    ost->sync_ist->file_index,
3312                    ost->sync_ist->st->index);
3313         if (ost->stream_copy)
3314             av_log(NULL, AV_LOG_INFO, " (copy)");
3315         else
3316             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3317                    input_streams[ost->source_index]->dec->name : "?",
3318                    ost->enc ? ost->enc->name : "?");
3319         av_log(NULL, AV_LOG_INFO, "\n");
3320     }
3321
3322     if (ret) {
3323         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3324         return ret;
3325     }
3326
3327     if (want_sdp) {
3328         print_sdp();
3329     }
3330
3331     return 0;
3332 }
3333
3334 /**
3335  * @return 1 if there are still streams where more output is wanted,
3336  *         0 otherwise
3337  */
3338 static int need_output(void)
3339 {
3340     int i;
3341
3342     for (i = 0; i < nb_output_streams; i++) {
3343         OutputStream *ost    = output_streams[i];
3344         OutputFile *of       = output_files[ost->file_index];
3345         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3346
3347         if (ost->is_past_recording_time ||
3348             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3349             continue;
3350         if (ost->frame_number >= ost->max_frames) {
3351             int j;
3352             for (j = 0; j < of->ctx->nb_streams; j++)
3353                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3354             continue;
3355         }
3356
3357         return 1;
3358     }
3359
3360     return 0;
3361 }
3362
3363 static int input_acceptable(InputStream *ist)
3364 {
3365     av_assert1(!ist->discard);
3366     return !input_files[ist->file_index]->unavailable &&
3367            !input_files[ist->file_index]->eof_reached;
3368 }
3369
3370 static int find_graph_input(FilterGraph *graph)
3371 {
3372     int i, nb_req_max = 0, file_index = -1;
3373
3374     for (i = 0; i < graph->nb_inputs; i++) {
3375         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
3376         if (nb_req > nb_req_max) {
3377             InputStream *ist = graph->inputs[i]->ist;
3378             if (input_acceptable(ist)) {
3379                 nb_req_max = nb_req;
3380                 file_index = ist->file_index;
3381             }
3382         }
3383     }
3384
3385     return file_index;
3386 }
3387
3388 /**
3389  * Select the input file to read from.
3390  *
3391  * @return  >=0 index of the input file to use;
3392  *          -1  if no file is acceptable;
3393  *          -2  to read from filters without reading from a file
3394  */
3395 static int select_input_file(void)
3396 {
3397     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
3398     int64_t opts_min;
3399     OutputStream *ost;
3400     AVFilterBufferRef *dummy;
3401
3402     for (i = 0; i < nb_output_streams; i++)
3403         nb_active_out -= output_streams[i]->unavailable =
3404             output_streams[i]->is_past_recording_time;
3405     while (nb_active_out) {
3406         opts_min = INT64_MAX;
3407         ost_index = -1;
3408         for (i = 0; i < nb_output_streams; i++) {
3409             OutputStream *ost = output_streams[i];
3410             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3411                                         AV_TIME_BASE_Q);
3412             if (!ost->unavailable && opts < opts_min) {
3413                 opts_min  = opts;
3414                 ost_index = i;
3415             }
3416         }
3417         if (ost_index < 0)
3418             return -1;
3419
3420         ost = output_streams[ost_index];
3421         if (ost->source_index >= 0) {
3422             /* ost is directly connected to an input */
3423             InputStream *ist = input_streams[ost->source_index];
3424             if (input_acceptable(ist))
3425                 return ist->file_index;
3426         } else {
3427             /* ost is connected to a complex filtergraph */
3428             av_assert1(ost->filter);
3429             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
3430                                                AV_BUFFERSINK_FLAG_PEEK);
3431             if (ret >= 0)
3432                 return -2;
3433             ret = find_graph_input(ost->filter->graph);
3434             if (ret >= 0)
3435                 return ret;
3436         }
3437         ost->unavailable = 1;
3438         nb_active_out--;
3439     }
3440     return -1;
3441 }
3442
3443 static int check_keyboard_interaction(int64_t cur_time)
3444 {
3445     int i, ret, key;
3446     static int64_t last_time;
3447     if (received_nb_signals)
3448         return AVERROR_EXIT;
3449     /* read_key() returns 0 on EOF */
3450     if(cur_time - last_time >= 100000 && !run_as_daemon){
3451         key =  read_key();
3452         last_time = cur_time;
3453     }else
3454         key = -1;
3455     if (key == 'q')
3456         return AVERROR_EXIT;
3457     if (key == '+') av_log_set_level(av_log_get_level()+10);
3458     if (key == '-') av_log_set_level(av_log_get_level()-10);
3459     if (key == 's') qp_hist     ^= 1;
3460     if (key == 'h'){
3461         if (do_hex_dump){
3462             do_hex_dump = do_pkt_dump = 0;
3463         } else if(do_pkt_dump){
3464             do_hex_dump = 1;
3465         } else
3466             do_pkt_dump = 1;
3467         av_log_set_level(AV_LOG_DEBUG);
3468     }
3469     if (key == 'c' || key == 'C'){
3470         char buf[4096], target[64], command[256], arg[256] = {0};
3471         double time;
3472         int k, n = 0;
3473         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3474         i = 0;
3475         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3476             if (k > 0)
3477                 buf[i++] = k;
3478         buf[i] = 0;
3479         if (k > 0 &&
3480             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3481             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3482                    target, time, command, arg);
3483             for (i = 0; i < nb_filtergraphs; i++) {
3484                 FilterGraph *fg = filtergraphs[i];
3485                 if (fg->graph) {
3486                     if (time < 0) {
3487                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3488                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3489                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3490                     } else {
3491                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3492                     }
3493                 }
3494             }
3495         } else {
3496             av_log(NULL, AV_LOG_ERROR,
3497                    "Parse error, at least 3 arguments were expected, "
3498                    "only %d given in string '%s'\n", n, buf);
3499         }
3500     }
3501     if (key == 'd' || key == 'D'){
3502         int debug=0;
3503         if(key == 'D') {
3504             debug = input_streams[0]->st->codec->debug<<1;
3505             if(!debug) debug = 1;
3506             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3507                 debug += debug;
3508         }else
3509             if(scanf("%d", &debug)!=1)
3510                 fprintf(stderr,"error parsing debug value\n");
3511         for(i=0;i<nb_input_streams;i++) {
3512             input_streams[i]->st->codec->debug = debug;
3513         }
3514         for(i=0;i<nb_output_streams;i++) {
3515             OutputStream *ost = output_streams[i];
3516             ost->st->codec->debug = debug;
3517         }
3518         if(debug) av_log_set_level(AV_LOG_DEBUG);
3519         fprintf(stderr,"debug=%d\n", debug);
3520     }
3521     if (key == '?'){
3522         fprintf(stderr, "key    function\n"
3523                         "?      show this help\n"
3524                         "+      increase verbosity\n"
3525                         "-      decrease verbosity\n"
3526                         "c      Send command to filtergraph\n"
3527                         "D      cycle through available debug modes\n"
3528                         "h      dump packets/hex press to cycle through the 3 states\n"
3529                         "q      quit\n"
3530                         "s      Show QP histogram\n"
3531         );
3532     }
3533     return 0;
3534 }
3535
3536 #if HAVE_PTHREADS
3537 static void *input_thread(void *arg)
3538 {
3539     InputFile *f = arg;
3540     int ret = 0;
3541
3542     while (!transcoding_finished && ret >= 0) {
3543         AVPacket pkt;
3544         ret = av_read_frame(f->ctx, &pkt);
3545
3546         if (ret == AVERROR(EAGAIN)) {
3547             av_usleep(10000);
3548             ret = 0;
3549             continue;
3550         } else if (ret < 0)
3551             break;
3552
3553         pthread_mutex_lock(&f->fifo_lock);
3554         while (!av_fifo_space(f->fifo))
3555             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3556
3557         av_dup_packet(&pkt);
3558         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3559
3560         pthread_mutex_unlock(&f->fifo_lock);
3561     }
3562
3563     f->finished = 1;
3564     return NULL;
3565 }
3566
3567 static void free_input_threads(void)
3568 {
3569     int i;
3570
3571     if (nb_input_files == 1)
3572         return;
3573
3574     transcoding_finished = 1;
3575
3576     for (i = 0; i < nb_input_files; i++) {
3577         InputFile *f = input_files[i];
3578         AVPacket pkt;
3579
3580         if (!f->fifo || f->joined)
3581             continue;
3582
3583         pthread_mutex_lock(&f->fifo_lock);
3584         while (av_fifo_size(f->fifo)) {
3585             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3586             av_free_packet(&pkt);
3587         }
3588         pthread_cond_signal(&f->fifo_cond);
3589         pthread_mutex_unlock(&f->fifo_lock);
3590
3591         pthread_join(f->thread, NULL);
3592         f->joined = 1;
3593
3594         while (av_fifo_size(f->fifo)) {
3595             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3596             av_free_packet(&pkt);
3597         }
3598         av_fifo_free(f->fifo);
3599     }
3600 }
3601
3602 static int init_input_threads(void)
3603 {
3604     int i, ret;
3605
3606     if (nb_input_files == 1)
3607         return 0;
3608
3609     for (i = 0; i < nb_input_files; i++) {
3610         InputFile *f = input_files[i];
3611
3612         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3613             return AVERROR(ENOMEM);
3614
3615         pthread_mutex_init(&f->fifo_lock, NULL);
3616         pthread_cond_init (&f->fifo_cond, NULL);