ffmpeg: fix assumed decoded_frame->pts timebase
[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 */
229     int64_t       next_dts;
230     /* dts of the last packet read for this stream */
231     int64_t       dts;
232
233     int64_t       next_pts;  /* synthetic pts for the next decode frame */
234     int64_t       pts;       /* current pts of the decoded frame */
235     double ts_scale;
236     int is_start;            /* is 1 at the start and after a discontinuity */
237     int saw_first_ts;
238     int showed_multi_packet_warning;
239     AVDictionary *opts;
240     AVRational framerate;               /* framerate forced with -r */
241     int top_field_first;
242
243     int resample_height;
244     int resample_width;
245     int resample_pix_fmt;
246
247     int      resample_sample_fmt;
248     int      resample_sample_rate;
249     int      resample_channels;
250     uint64_t resample_channel_layout;
251
252     /* a pool of free buffers for decoded data */
253     FrameBuffer *buffer_pool;
254     int dr1;
255
256     /* decoded data from this stream goes into all those filters
257      * currently video and audio only */
258     InputFilter **filters;
259     int        nb_filters;
260 } InputStream;
261
262 typedef struct InputFile {
263     AVFormatContext *ctx;
264     int eof_reached;      /* true if eof reached */
265     int unavailable;      /* true if the file is unavailable (possibly temporarily) */
266     int ist_index;        /* index of first stream in input_streams */
267     int64_t ts_offset;
268     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
269                              from ctx.nb_streams if new streams appear during av_read_frame() */
270     int nb_streams_warn;  /* number of streams that the user was warned of */
271     int rate_emu;
272
273 #if HAVE_PTHREADS
274     pthread_t thread;           /* thread reading from this file */
275     int finished;               /* the thread has exited */
276     int joined;                 /* the thread has been joined */
277     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
278     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
279     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
280 #endif
281 } InputFile;
282
283 typedef struct OutputStream {
284     int file_index;          /* file index */
285     int index;               /* stream index in the output file */
286     int source_index;        /* InputStream index */
287     AVStream *st;            /* stream in the output file */
288     int encoding_needed;     /* true if encoding needed for this stream */
289     int frame_number;
290     /* input pts and corresponding output pts
291        for A/V sync */
292     struct InputStream *sync_ist; /* input stream to sync against */
293     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
294     /* pts of the first frame encoded for this stream, used for limiting
295      * recording time */
296     int64_t first_pts;
297     AVBitStreamFilterContext *bitstream_filters;
298     AVCodec *enc;
299     int64_t max_frames;
300     AVFrame *filtered_frame;
301
302     /* video only */
303     AVRational frame_rate;
304     int force_fps;
305     int top_field_first;
306
307     float frame_aspect_ratio;
308     float last_quality;
309
310     /* forced key frames */
311     int64_t *forced_kf_pts;
312     int forced_kf_count;
313     int forced_kf_index;
314     char *forced_keyframes;
315
316     /* audio only */
317     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
318     int audio_channels_mapped;           /* number of channels in audio_channels_map */
319
320     FILE *logfile;
321
322     OutputFilter *filter;
323     char *avfilter;
324
325     int64_t sws_flags;
326     int64_t swr_dither_method;
327     double swr_dither_scale;
328     AVDictionary *opts;
329     int is_past_recording_time;
330     int unavailable;  /* true if the steram is unavailable (possibly temporarily) */
331     int stream_copy;
332     const char *attachment_filename;
333     int copy_initial_nonkeyframes;
334
335     int keep_pix_fmt;
336 } OutputStream;
337
338
339 #if HAVE_TERMIOS_H
340
341 /* init terminal so that we can grab keys */
342 static struct termios oldtty;
343 static int restore_tty;
344 #endif
345
346 typedef struct OutputFile {
347     AVFormatContext *ctx;
348     AVDictionary *opts;
349     int ost_index;       /* index of the first stream in output_streams */
350     int64_t recording_time; /* desired length of the resulting file in microseconds */
351     int64_t start_time;     /* start time in microseconds */
352     uint64_t limit_filesize; /* filesize limit expressed in bytes */
353 } OutputFile;
354
355 static InputStream **input_streams = NULL;
356 static int        nb_input_streams = 0;
357 static InputFile   **input_files   = NULL;
358 static int        nb_input_files   = 0;
359
360 static OutputStream **output_streams = NULL;
361 static int         nb_output_streams = 0;
362 static OutputFile   **output_files   = NULL;
363 static int         nb_output_files   = 0;
364
365 static FilterGraph **filtergraphs;
366 int               nb_filtergraphs;
367
368 typedef struct OptionsContext {
369     /* input/output options */
370     int64_t start_time;
371     const char *format;
372
373     SpecifierOpt *codec_names;
374     int        nb_codec_names;
375     SpecifierOpt *audio_channels;
376     int        nb_audio_channels;
377     SpecifierOpt *audio_sample_rate;
378     int        nb_audio_sample_rate;
379     SpecifierOpt *frame_rates;
380     int        nb_frame_rates;
381     SpecifierOpt *frame_sizes;
382     int        nb_frame_sizes;
383     SpecifierOpt *frame_pix_fmts;
384     int        nb_frame_pix_fmts;
385
386     /* input options */
387     int64_t input_ts_offset;
388     int rate_emu;
389
390     SpecifierOpt *ts_scale;
391     int        nb_ts_scale;
392     SpecifierOpt *dump_attachment;
393     int        nb_dump_attachment;
394
395     /* output options */
396     StreamMap *stream_maps;
397     int     nb_stream_maps;
398     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
399     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
400     int metadata_global_manual;
401     int metadata_streams_manual;
402     int metadata_chapters_manual;
403     const char **attachments;
404     int       nb_attachments;
405
406     int chapters_input_file;
407
408     int64_t recording_time;
409     uint64_t limit_filesize;
410     float mux_preload;
411     float mux_max_delay;
412
413     int video_disable;
414     int audio_disable;
415     int subtitle_disable;
416     int data_disable;
417
418     /* indexed by output file stream index */
419     int   *streamid_map;
420     int nb_streamid_map;
421
422     SpecifierOpt *metadata;
423     int        nb_metadata;
424     SpecifierOpt *max_frames;
425     int        nb_max_frames;
426     SpecifierOpt *bitstream_filters;
427     int        nb_bitstream_filters;
428     SpecifierOpt *codec_tags;
429     int        nb_codec_tags;
430     SpecifierOpt *sample_fmts;
431     int        nb_sample_fmts;
432     SpecifierOpt *qscale;
433     int        nb_qscale;
434     SpecifierOpt *forced_key_frames;
435     int        nb_forced_key_frames;
436     SpecifierOpt *force_fps;
437     int        nb_force_fps;
438     SpecifierOpt *frame_aspect_ratios;
439     int        nb_frame_aspect_ratios;
440     SpecifierOpt *rc_overrides;
441     int        nb_rc_overrides;
442     SpecifierOpt *intra_matrices;
443     int        nb_intra_matrices;
444     SpecifierOpt *inter_matrices;
445     int        nb_inter_matrices;
446     SpecifierOpt *top_field_first;
447     int        nb_top_field_first;
448     SpecifierOpt *metadata_map;
449     int        nb_metadata_map;
450     SpecifierOpt *presets;
451     int        nb_presets;
452     SpecifierOpt *copy_initial_nonkeyframes;
453     int        nb_copy_initial_nonkeyframes;
454     SpecifierOpt *filters;
455     int        nb_filters;
456 } OptionsContext;
457
458 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
459
460 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
461 {\
462     int i, ret;\
463     for (i = 0; i < o->nb_ ## name; i++) {\
464         char *spec = o->name[i].specifier;\
465         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
466             outvar = o->name[i].u.type;\
467         else if (ret < 0)\
468             exit_program(1);\
469     }\
470 }
471
472 static int64_t getutime(void)
473 {
474 #if HAVE_GETRUSAGE
475     struct rusage rusage;
476
477     getrusage(RUSAGE_SELF, &rusage);
478     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
479 #elif HAVE_GETPROCESSTIMES
480     HANDLE proc;
481     FILETIME c, e, k, u;
482     proc = GetCurrentProcess();
483     GetProcessTimes(proc, &c, &e, &k, &u);
484     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
485 #else
486     return av_gettime();
487 #endif
488 }
489
490 static void update_benchmark(const char *fmt, ...)
491 {
492     if (do_benchmark_all) {
493         int64_t t = getutime();
494         va_list va;
495         char buf[1024];
496
497         if (fmt) {
498             va_start(va, fmt);
499             vsnprintf(buf, sizeof(buf), fmt, va);
500             va_end(va);
501             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
502         }
503         current_time = t;
504     }
505 }
506
507 static void reset_options(OptionsContext *o, int is_input)
508 {
509     const OptionDef *po = options;
510     OptionsContext bak= *o;
511     int i;
512
513     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
514     while (po->name) {
515         void *dst = (uint8_t*)o + po->u.off;
516
517         if (po->flags & OPT_SPEC) {
518             SpecifierOpt **so = dst;
519             int i, *count = (int*)(so + 1);
520             for (i = 0; i < *count; i++) {
521                 av_freep(&(*so)[i].specifier);
522                 if (po->flags & OPT_STRING)
523                     av_freep(&(*so)[i].u.str);
524             }
525             av_freep(so);
526             *count = 0;
527         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
528             av_freep(dst);
529         po++;
530     }
531
532     for (i = 0; i < o->nb_stream_maps; i++)
533         av_freep(&o->stream_maps[i].linklabel);
534     av_freep(&o->stream_maps);
535     av_freep(&o->audio_channel_maps);
536     av_freep(&o->streamid_map);
537
538     memset(o, 0, sizeof(*o));
539
540     if (is_input) {
541         o->recording_time = bak.recording_time;
542         if (o->recording_time != INT64_MAX)
543             av_log(NULL, AV_LOG_WARNING,
544                    "-t is not an input option, keeping it for the next output;"
545                    " consider fixing your command line.\n");
546     } else
547         o->recording_time = INT64_MAX;
548     o->mux_max_delay  = 0.7;
549     o->limit_filesize = UINT64_MAX;
550     o->chapters_input_file = INT_MAX;
551
552     uninit_opts();
553     init_opts();
554 }
555
556 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
557 {
558     if (codec && codec->pix_fmts) {
559         const enum PixelFormat *p = codec->pix_fmts;
560         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
561         enum PixelFormat best= PIX_FMT_NONE;
562         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
563             if (st->codec->codec_id == CODEC_ID_MJPEG) {
564                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
565             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
566                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
567                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
568             }
569         }
570         for (; *p != PIX_FMT_NONE; p++) {
571             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
572             if (*p == target)
573                 break;
574         }
575         if (*p == PIX_FMT_NONE) {
576             if (target != PIX_FMT_NONE)
577                 av_log(NULL, AV_LOG_WARNING,
578                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
579                        av_pix_fmt_descriptors[target].name,
580                        codec->name,
581                        av_pix_fmt_descriptors[best].name);
582             return best;
583         }
584     }
585     return target;
586 }
587
588 static char *choose_pix_fmts(OutputStream *ost)
589 {
590      if (ost->keep_pix_fmt) {
591         if (ost->filter)
592             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
593                                             AVFILTER_AUTO_CONVERT_NONE);
594         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
595             return NULL;
596         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
597     }
598     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
599         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
600     } else if (ost->enc && ost->enc->pix_fmts) {
601         const enum PixelFormat *p;
602         AVIOContext *s = NULL;
603         uint8_t *ret;
604         int len;
605
606         if (avio_open_dyn_buf(&s) < 0)
607             exit_program(1);
608
609         p = ost->enc->pix_fmts;
610         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
611             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
612                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
613             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
614                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
615                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
616             }
617         }
618
619         for (; *p != PIX_FMT_NONE; p++) {
620             const char *name = av_get_pix_fmt_name(*p);
621             avio_printf(s, "%s:", name);
622         }
623         len = avio_close_dyn_buf(s, &ret);
624         ret[len - 1] = 0;
625         return ret;
626     } else
627         return NULL;
628 }
629
630 /**
631  * Define a function for building a string containing a list of
632  * allowed formats,
633  */
634 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
635 static char *choose_ ## var ## s(OutputStream *ost)                             \
636 {                                                                               \
637     if (ost->st->codec->var != none) {                                          \
638         get_name(ost->st->codec->var);                                          \
639         return av_strdup(name);                                                 \
640     } else if (ost->enc->supported_list) {                                      \
641         const type *p;                                                          \
642         AVIOContext *s = NULL;                                                  \
643         uint8_t *ret;                                                           \
644         int len;                                                                \
645                                                                                 \
646         if (avio_open_dyn_buf(&s) < 0)                                          \
647             exit_program(1);                                                    \
648                                                                                 \
649         for (p = ost->enc->supported_list; *p != none; p++) {                   \
650             get_name(*p);                                                       \
651             avio_printf(s, "%s" separator, name);                               \
652         }                                                                       \
653         len = avio_close_dyn_buf(s, &ret);                                      \
654         ret[len - 1] = 0;                                                       \
655         return ret;                                                             \
656     } else                                                                      \
657         return NULL;                                                            \
658 }
659
660 #define GET_PIX_FMT_NAME(pix_fmt)\
661     const char *name = av_get_pix_fmt_name(pix_fmt);
662
663 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
664 //                   GET_PIX_FMT_NAME, ":")
665
666 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
667     const char *name = av_get_sample_fmt_name(sample_fmt)
668
669 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
670                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
671
672 #define GET_SAMPLE_RATE_NAME(rate)\
673     char name[16];\
674     snprintf(name, sizeof(name), "%d", rate);
675
676 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
677                   GET_SAMPLE_RATE_NAME, ",")
678
679 #define GET_CH_LAYOUT_NAME(ch_layout)\
680     char name[16];\
681     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
682
683 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
684                   GET_CH_LAYOUT_NAME, ",")
685
686 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
687 {
688     FilterGraph *fg = av_mallocz(sizeof(*fg));
689
690     if (!fg)
691         exit_program(1);
692     fg->index = nb_filtergraphs;
693
694     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
695                              fg->nb_outputs + 1);
696     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
697         exit_program(1);
698     fg->outputs[0]->ost   = ost;
699     fg->outputs[0]->graph = fg;
700
701     ost->filter = fg->outputs[0];
702
703     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
704                             fg->nb_inputs + 1);
705     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
706         exit_program(1);
707     fg->inputs[0]->ist   = ist;
708     fg->inputs[0]->graph = fg;
709
710     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
711                               &ist->nb_filters, ist->nb_filters + 1);
712     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
713
714     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
715                               &nb_filtergraphs, nb_filtergraphs + 1);
716     filtergraphs[nb_filtergraphs - 1] = fg;
717
718     return fg;
719 }
720
721 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
722 {
723     InputStream *ist = NULL;
724     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
725     int i;
726
727     // TODO: support other filter types
728     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
729         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
730                "currently.\n");
731         exit_program(1);
732     }
733
734     if (in->name) {
735         AVFormatContext *s;
736         AVStream       *st = NULL;
737         char *p;
738         int file_idx = strtol(in->name, &p, 0);
739
740         if (file_idx < 0 || file_idx >= nb_input_files) {
741             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
742                    file_idx, fg->graph_desc);
743             exit_program(1);
744         }
745         s = input_files[file_idx]->ctx;
746
747         for (i = 0; i < s->nb_streams; i++) {
748             if (s->streams[i]->codec->codec_type != type)
749                 continue;
750             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
751                 st = s->streams[i];
752                 break;
753             }
754         }
755         if (!st) {
756             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
757                    "matches no streams.\n", p, fg->graph_desc);
758             exit_program(1);
759         }
760         ist = input_streams[input_files[file_idx]->ist_index + st->index];
761     } else {
762         /* find the first unused stream of corresponding type */
763         for (i = 0; i < nb_input_streams; i++) {
764             ist = input_streams[i];
765             if (ist->st->codec->codec_type == type && ist->discard)
766                 break;
767         }
768         if (i == nb_input_streams) {
769             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
770                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
771                    in->filter_ctx->name);
772             exit_program(1);
773         }
774     }
775     av_assert0(ist);
776
777     ist->discard         = 0;
778     ist->decoding_needed = 1;
779     ist->st->discard = AVDISCARD_NONE;
780
781     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
782                             &fg->nb_inputs, fg->nb_inputs + 1);
783     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
784         exit_program(1);
785     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
786     fg->inputs[fg->nb_inputs - 1]->graph = fg;
787
788     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
789                               &ist->nb_filters, ist->nb_filters + 1);
790     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
791 }
792
793 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
794 {
795     char *pix_fmts;
796     OutputStream *ost = ofilter->ost;
797     AVCodecContext *codec = ost->st->codec;
798     AVFilterContext *last_filter = out->filter_ctx;
799     int pad_idx = out->pad_idx;
800     int ret;
801     char name[255];
802     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
803
804     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
805     ret = avfilter_graph_create_filter(&ofilter->filter,
806                                        avfilter_get_by_name("buffersink"),
807                                        name, NULL, NULL/*buffersink_params*/, fg->graph);
808     av_freep(&buffersink_params);
809
810     if (ret < 0)
811         return ret;
812
813     if (codec->width || codec->height) {
814         char args[255];
815         AVFilterContext *filter;
816
817         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
818                  codec->width,
819                  codec->height,
820                  (unsigned)ost->sws_flags);
821         snprintf(name, sizeof(name), "scaler for output stream %d:%d",
822                  ost->file_index, ost->index);
823         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
824                                                 name, args, NULL, fg->graph)) < 0)
825             return ret;
826         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
827             return ret;
828
829         last_filter = filter;
830         pad_idx = 0;
831     }
832
833     if ((pix_fmts = choose_pix_fmts(ost))) {
834         AVFilterContext *filter;
835         snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
836                  ost->file_index, ost->index);
837         if ((ret = avfilter_graph_create_filter(&filter,
838                                                 avfilter_get_by_name("format"),
839                                                 "format", pix_fmts, NULL,
840                                                 fg->graph)) < 0)
841             return ret;
842         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
843             return ret;
844
845         last_filter = filter;
846         pad_idx     = 0;
847         av_freep(&pix_fmts);
848     }
849
850     if (ost->frame_rate.num && 0) {
851         AVFilterContext *fps;
852         char args[255];
853
854         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
855                  ost->frame_rate.den);
856         snprintf(name, sizeof(name), "fps for output stream %d:%d",
857                  ost->file_index, ost->index);
858         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
859                                            name, args, NULL, fg->graph);
860         if (ret < 0)
861             return ret;
862
863         ret = avfilter_link(last_filter, pad_idx, fps, 0);
864         if (ret < 0)
865             return ret;
866         last_filter = fps;
867         pad_idx = 0;
868     }
869
870     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
871         return ret;
872
873     return 0;
874 }
875
876 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
877 {
878     OutputStream *ost = ofilter->ost;
879     AVCodecContext *codec  = ost->st->codec;
880     AVFilterContext *last_filter = out->filter_ctx;
881     int pad_idx = out->pad_idx;
882     char *sample_fmts, *sample_rates, *channel_layouts;
883     char name[255];
884     int ret;
885
886
887     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
888     ret = avfilter_graph_create_filter(&ofilter->filter,
889                                        avfilter_get_by_name("abuffersink"),
890                                        name, NULL, NULL, fg->graph);
891     if (ret < 0)
892         return ret;
893
894 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
895     AVFilterContext *filt_ctx;                                              \
896                                                                             \
897     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
898            "similarly to -af " filter_name "=%s.\n", arg);                  \
899                                                                             \
900     ret = avfilter_graph_create_filter(&filt_ctx,                           \
901                                        avfilter_get_by_name(filter_name),   \
902                                        filter_name, arg, NULL, fg->graph);  \
903     if (ret < 0)                                                            \
904         return ret;                                                         \
905                                                                             \
906     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
907     if (ret < 0)                                                            \
908         return ret;                                                         \
909                                                                             \
910     last_filter = filt_ctx;                                                 \
911     pad_idx = 0;                                                            \
912 } while (0)
913     if (ost->audio_channels_mapped) {
914         int i;
915         AVBPrint pan_buf;
916         av_bprint_init(&pan_buf, 256, 8192);
917         av_bprintf(&pan_buf, "0x%"PRIx64,
918                    av_get_default_channel_layout(ost->audio_channels_mapped));
919         for (i = 0; i < ost->audio_channels_mapped; i++)
920             if (ost->audio_channels_map[i] != -1)
921                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
922
923         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
924         av_bprint_finalize(&pan_buf, NULL);
925     }
926
927     if (codec->channels && !codec->channel_layout)
928         codec->channel_layout = av_get_default_channel_layout(codec->channels);
929
930     sample_fmts     = choose_sample_fmts(ost);
931     sample_rates    = choose_sample_rates(ost);
932     channel_layouts = choose_channel_layouts(ost);
933     if (sample_fmts || sample_rates || channel_layouts) {
934         AVFilterContext *format;
935         char args[256];
936         int len = 0;
937
938         if (sample_fmts)
939             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
940                             sample_fmts);
941         if (sample_rates)
942             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
943                             sample_rates);
944         if (channel_layouts)
945             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
946                             channel_layouts);
947         args[len - 1] = 0;
948
949         av_freep(&sample_fmts);
950         av_freep(&sample_rates);
951         av_freep(&channel_layouts);
952
953         snprintf(name, sizeof(name), "audio format for output stream %d:%d",
954                  ost->file_index, ost->index);
955         ret = avfilter_graph_create_filter(&format,
956                                            avfilter_get_by_name("aformat"),
957                                            name, args, NULL, fg->graph);
958         if (ret < 0)
959             return ret;
960
961         ret = avfilter_link(last_filter, pad_idx, format, 0);
962         if (ret < 0)
963             return ret;
964
965         last_filter = format;
966         pad_idx = 0;
967     }
968
969     if (audio_volume != 256 && 0) {
970         char args[256];
971
972         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
973         AUTO_INSERT_FILTER("-vol", "volume", args);
974     }
975
976     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
977         return ret;
978
979     return 0;
980 }
981
982 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
983 {                                                                  \
984     AVFilterContext *ctx = inout->filter_ctx;                      \
985     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
986     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
987     AVIOContext *pb;                                               \
988                                                                    \
989     if (avio_open_dyn_buf(&pb) < 0)                                \
990         exit_program(1);                                           \
991                                                                    \
992     avio_printf(pb, "%s", ctx->filter->name);                      \
993     if (nb_pads > 1)                                               \
994         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
995     avio_w8(pb, 0);                                                \
996     avio_close_dyn_buf(pb, &f->name);                              \
997 }
998
999 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1000 {
1001     av_freep(&ofilter->name);
1002     DESCRIBE_FILTER_LINK(ofilter, out, 0);
1003
1004     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
1005     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
1006     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
1007     default: av_assert0(0);
1008     }
1009 }
1010
1011 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
1012                                         AVFilterInOut *in)
1013 {
1014     AVFilterContext *first_filter = in->filter_ctx;
1015     AVFilter *filter = avfilter_get_by_name("buffer");
1016     InputStream *ist = ifilter->ist;
1017     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1018                                                       ist->framerate.num} :
1019                                          ist->st->time_base;
1020     AVRational fr = ist->framerate.num ? ist->framerate :
1021                                          ist->st->r_frame_rate;
1022     AVRational sar;
1023     AVBPrint args;
1024     char name[255];
1025     int pad_idx = in->pad_idx;
1026     int ret;
1027
1028     sar = ist->st->sample_aspect_ratio.num ?
1029           ist->st->sample_aspect_ratio :
1030           ist->st->codec->sample_aspect_ratio;
1031     if(!sar.den)
1032         sar = (AVRational){0,1};
1033     av_bprint_init(&args, 0, 1);
1034     av_bprintf(&args,
1035              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1036              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1037              ist->st->codec->height, ist->st->codec->pix_fmt,
1038              tb.num, tb.den, sar.num, sar.den,
1039              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1040     if (fr.num && fr.den)
1041         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1042     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1043              ist->file_index, ist->st->index);
1044
1045     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
1046                                             args.str, NULL, fg->graph)) < 0)
1047         return ret;
1048
1049     if (ist->framerate.num) {
1050         AVFilterContext *setpts;
1051
1052         snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
1053                  ist->file_index, ist->st->index);
1054         if ((ret = avfilter_graph_create_filter(&setpts,
1055                                                 avfilter_get_by_name("setpts"),
1056                                                 name, "N", NULL,
1057                                                 fg->graph)) < 0)
1058             return ret;
1059
1060         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1061             return ret;
1062
1063         first_filter = setpts;
1064         pad_idx = 0;
1065     }
1066
1067     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1068         return ret;
1069     return 0;
1070 }
1071
1072 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1073                                         AVFilterInOut *in)
1074 {
1075     AVFilterContext *first_filter = in->filter_ctx;
1076     AVFilter *filter = avfilter_get_by_name("abuffer");
1077     InputStream *ist = ifilter->ist;
1078     int pad_idx = in->pad_idx;
1079     char args[255], name[255];
1080     int ret;
1081
1082     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1083              ":channel_layout=0x%"PRIx64,
1084              1, ist->st->codec->sample_rate,
1085              ist->st->codec->sample_rate,
1086              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1087              ist->st->codec->channel_layout);
1088     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1089              ist->file_index, ist->st->index);
1090
1091     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1092                                             name, args, NULL,
1093                                             fg->graph)) < 0)
1094         return ret;
1095
1096 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1097     AVFilterContext *filt_ctx;                                              \
1098                                                                             \
1099     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1100            "similarly to -af " filter_name "=%s.\n", arg);                  \
1101                                                                             \
1102     snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
1103                 fg->index, filter_name, ist->file_index, ist->st->index);   \
1104     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1105                                        avfilter_get_by_name(filter_name),   \
1106                                        name, arg, NULL, fg->graph);         \
1107     if (ret < 0)                                                            \
1108         return ret;                                                         \
1109                                                                             \
1110     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1111     if (ret < 0)                                                            \
1112         return ret;                                                         \
1113                                                                             \
1114     first_filter = filt_ctx;                                                  \
1115 } while (0)
1116
1117     if (audio_sync_method > 0) {
1118         char args[256] = {0};
1119
1120         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1121         if (audio_sync_method > 1)
1122             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1123         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1124     }
1125
1126 //     if (ost->audio_channels_mapped) {
1127 //         int i;
1128 //         AVBPrint pan_buf;
1129 //         av_bprint_init(&pan_buf, 256, 8192);
1130 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1131 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1132 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1133 //             if (ost->audio_channels_map[i] != -1)
1134 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1135 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1136 //         av_bprint_finalize(&pan_buf, NULL);
1137 //     }
1138
1139     if (audio_volume != 256) {
1140         char args[256];
1141
1142         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1143         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1144     }
1145     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1146         return ret;
1147
1148     return 0;
1149 }
1150
1151 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1152                                   AVFilterInOut *in)
1153 {
1154     av_freep(&ifilter->name);
1155     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1156
1157     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
1158     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1159     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1160     default: av_assert0(0);
1161     }
1162 }
1163
1164 static int configure_filtergraph(FilterGraph *fg)
1165 {
1166     AVFilterInOut *inputs, *outputs, *cur;
1167     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1168     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1169                                       fg->graph_desc;
1170
1171     avfilter_graph_free(&fg->graph);
1172     if (!(fg->graph = avfilter_graph_alloc()))
1173         return AVERROR(ENOMEM);
1174
1175     if (simple) {
1176         OutputStream *ost = fg->outputs[0]->ost;
1177         char args[255];
1178         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1179         fg->graph->scale_sws_opts = av_strdup(args);
1180     }
1181
1182     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1183         return ret;
1184
1185     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1186         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1187                "exactly one input and output.\n", graph_desc);
1188         return AVERROR(EINVAL);
1189     }
1190
1191     for (cur = inputs; !simple && init && cur; cur = cur->next)
1192         init_input_filter(fg, cur);
1193
1194     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1195         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1196             return ret;
1197     avfilter_inout_free(&inputs);
1198
1199     if (!init || simple) {
1200         /* we already know the mappings between lavfi outputs and output streams,
1201          * so we can finish the setup */
1202         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1203             configure_output_filter(fg, fg->outputs[i], cur);
1204         avfilter_inout_free(&outputs);
1205
1206         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1207             return ret;
1208     } else {
1209         /* wait until output mappings are processed */
1210         for (cur = outputs; cur;) {
1211             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1212                                      &fg->nb_outputs, fg->nb_outputs + 1);
1213             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1214                 exit_program(1);
1215             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1216             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1217             cur = cur->next;
1218             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1219         }
1220     }
1221
1222     return 0;
1223 }
1224
1225 static int configure_complex_filters(void)
1226 {
1227     int i, ret = 0;
1228
1229     for (i = 0; i < nb_filtergraphs; i++)
1230         if (!filtergraphs[i]->graph &&
1231             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1232             return ret;
1233     return 0;
1234 }
1235
1236 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1237 {
1238     int i;
1239     for (i = 0; i < fg->nb_inputs; i++)
1240         if (fg->inputs[i]->ist == ist)
1241             return 1;
1242     return 0;
1243 }
1244
1245 static void term_exit(void)
1246 {
1247     av_log(NULL, AV_LOG_QUIET, "%s", "");
1248 #if HAVE_TERMIOS_H
1249     if(restore_tty)
1250         tcsetattr (0, TCSANOW, &oldtty);
1251 #endif
1252 }
1253
1254 static volatile int received_sigterm = 0;
1255
1256 static void sigterm_handler(int sig)
1257 {
1258     received_sigterm = sig;
1259     received_nb_signals++;
1260     term_exit();
1261     if(received_nb_signals > 3)
1262         exit(123);
1263 }
1264
1265 static void term_init(void)
1266 {
1267 #if HAVE_TERMIOS_H
1268     if(!run_as_daemon){
1269         struct termios tty;
1270         int istty = 1;
1271 #if HAVE_ISATTY
1272         istty = isatty(0) && isatty(2);
1273 #endif
1274         if (istty && tcgetattr (0, &tty) == 0) {
1275             oldtty = tty;
1276             restore_tty = 1;
1277             atexit(term_exit);
1278
1279             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1280                              |INLCR|IGNCR|ICRNL|IXON);
1281             tty.c_oflag |= OPOST;
1282             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1283             tty.c_cflag &= ~(CSIZE|PARENB);
1284             tty.c_cflag |= CS8;
1285             tty.c_cc[VMIN] = 1;
1286             tty.c_cc[VTIME] = 0;
1287
1288             tcsetattr (0, TCSANOW, &tty);
1289         }
1290         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1291     }
1292 #endif
1293     avformat_network_deinit();
1294
1295     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1296     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1297 #ifdef SIGXCPU
1298     signal(SIGXCPU, sigterm_handler);
1299 #endif
1300 }
1301
1302 /* read a key without blocking */
1303 static int read_key(void)
1304 {
1305     unsigned char ch;
1306 #if HAVE_TERMIOS_H
1307     int n = 1;
1308     struct timeval tv;
1309     fd_set rfds;
1310
1311     FD_ZERO(&rfds);
1312     FD_SET(0, &rfds);
1313     tv.tv_sec = 0;
1314     tv.tv_usec = 0;
1315     n = select(1, &rfds, NULL, NULL, &tv);
1316     if (n > 0) {
1317         n = read(0, &ch, 1);
1318         if (n == 1)
1319             return ch;
1320
1321         return n;
1322     }
1323 #elif HAVE_KBHIT
1324 #    if HAVE_PEEKNAMEDPIPE
1325     static int is_pipe;
1326     static HANDLE input_handle;
1327     DWORD dw, nchars;
1328     if(!input_handle){
1329         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1330         is_pipe = !GetConsoleMode(input_handle, &dw);
1331     }
1332
1333     if (stdin->_cnt > 0) {
1334         read(0, &ch, 1);
1335         return ch;
1336     }
1337     if (is_pipe) {
1338         /* When running under a GUI, you will end here. */
1339         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1340             return -1;
1341         //Read it
1342         if(nchars != 0) {
1343             read(0, &ch, 1);
1344             return ch;
1345         }else{
1346             return -1;
1347         }
1348     }
1349 #    endif
1350     if(kbhit())
1351         return(getch());
1352 #endif
1353     return -1;
1354 }
1355
1356 static int decode_interrupt_cb(void *ctx)
1357 {
1358     return received_nb_signals > 1;
1359 }
1360
1361 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1362
1363 void av_noreturn exit_program(int ret)
1364 {
1365     int i, j;
1366
1367     for (i = 0; i < nb_filtergraphs; i++) {
1368         avfilter_graph_free(&filtergraphs[i]->graph);
1369         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1370             av_freep(&filtergraphs[i]->inputs[j]->name);
1371             av_freep(&filtergraphs[i]->inputs[j]);
1372         }
1373         av_freep(&filtergraphs[i]->inputs);
1374         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1375             av_freep(&filtergraphs[i]->outputs[j]->name);
1376             av_freep(&filtergraphs[i]->outputs[j]);
1377         }
1378         av_freep(&filtergraphs[i]->outputs);
1379         av_freep(&filtergraphs[i]);
1380     }
1381     av_freep(&filtergraphs);
1382
1383     av_freep(&subtitle_out);
1384
1385     /* close files */
1386     for (i = 0; i < nb_output_files; i++) {
1387         AVFormatContext *s = output_files[i]->ctx;
1388         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1389             avio_close(s->pb);
1390         avformat_free_context(s);
1391         av_dict_free(&output_files[i]->opts);
1392         av_freep(&output_files[i]);
1393     }
1394     for (i = 0; i < nb_output_streams; i++) {
1395         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1396         while (bsfc) {
1397             AVBitStreamFilterContext *next = bsfc->next;
1398             av_bitstream_filter_close(bsfc);
1399             bsfc = next;
1400         }
1401         output_streams[i]->bitstream_filters = NULL;
1402
1403         av_freep(&output_streams[i]->forced_keyframes);
1404         av_freep(&output_streams[i]->filtered_frame);
1405         av_freep(&output_streams[i]->avfilter);
1406         av_freep(&output_streams[i]);
1407     }
1408     for (i = 0; i < nb_input_files; i++) {
1409         avformat_close_input(&input_files[i]->ctx);
1410         av_freep(&input_files[i]);
1411     }
1412     for (i = 0; i < nb_input_streams; i++) {
1413         av_freep(&input_streams[i]->decoded_frame);
1414         av_dict_free(&input_streams[i]->opts);
1415         free_buffer_pool(&input_streams[i]->buffer_pool);
1416         av_freep(&input_streams[i]->filters);
1417         av_freep(&input_streams[i]);
1418     }
1419
1420     if (vstats_file)
1421         fclose(vstats_file);
1422     av_free(vstats_filename);
1423
1424     av_freep(&input_streams);
1425     av_freep(&input_files);
1426     av_freep(&output_streams);
1427     av_freep(&output_files);
1428
1429     uninit_opts();
1430
1431     avfilter_uninit();
1432     avformat_network_deinit();
1433
1434     if (received_sigterm) {
1435         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1436                (int) received_sigterm);
1437         exit (255);
1438     }
1439
1440     exit(ret);
1441 }
1442
1443 static void assert_avoptions(AVDictionary *m)
1444 {
1445     AVDictionaryEntry *t;
1446     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1447         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1448         exit_program(1);
1449     }
1450 }
1451
1452 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1453 {
1454     const char *codec_string = encoder ? "encoder" : "decoder";
1455     AVCodec *codec;
1456     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1457         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1458         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1459                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1460                 codec_string, c->codec->name);
1461         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1462         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1463             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1464                    codec_string, codec->name);
1465         exit_program(1);
1466     }
1467 }
1468
1469 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1470 {
1471     if (codec && codec->sample_fmts) {
1472         const enum AVSampleFormat *p = codec->sample_fmts;
1473         for (; *p != -1; p++) {
1474             if (*p == st->codec->sample_fmt)
1475                 break;
1476         }
1477         if (*p == -1) {
1478             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1479                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1480             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1481             av_log(NULL, AV_LOG_WARNING,
1482                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1483                    av_get_sample_fmt_name(st->codec->sample_fmt),
1484                    codec->name,
1485                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1486             st->codec->sample_fmt = codec->sample_fmts[0];
1487         }
1488     }
1489 }
1490
1491 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1492 {
1493     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1494     AVCodecContext          *avctx = ost->st->codec;
1495     int ret;
1496
1497     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1498         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1499         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1500
1501     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1502         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1503         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1504             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1505             pkt->pts = pkt->dts = max;
1506         }
1507     }
1508
1509     /*
1510      * Audio encoders may split the packets --  #frames in != #packets out.
1511      * But there is no reordering, so we can limit the number of output packets
1512      * by simply dropping them here.
1513      * Counting encoded video frames needs to be done separately because of
1514      * reordering, see do_video_out()
1515      */
1516     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1517         if (ost->frame_number >= ost->max_frames) {
1518             av_free_packet(pkt);
1519             return;
1520         }
1521         ost->frame_number++;
1522     }
1523
1524     while (bsfc) {
1525         AVPacket new_pkt = *pkt;
1526         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1527                                            &new_pkt.data, &new_pkt.size,
1528                                            pkt->data, pkt->size,
1529                                            pkt->flags & AV_PKT_FLAG_KEY);
1530         if (a > 0) {
1531             av_free_packet(pkt);
1532             new_pkt.destruct = av_destruct_packet;
1533         } else if (a < 0) {
1534             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1535                    bsfc->filter->name, pkt->stream_index,
1536                    avctx->codec ? avctx->codec->name : "copy");
1537             print_error("", a);
1538             if (exit_on_error)
1539                 exit_program(1);
1540         }
1541         *pkt = new_pkt;
1542
1543         bsfc = bsfc->next;
1544     }
1545
1546     pkt->stream_index = ost->index;
1547     ret = av_interleaved_write_frame(s, pkt);
1548     if (ret < 0) {
1549         print_error("av_interleaved_write_frame()", ret);
1550         exit_program(1);
1551     }
1552 }
1553
1554 static int check_recording_time(OutputStream *ost)
1555 {
1556     OutputFile *of = output_files[ost->file_index];
1557
1558     if (of->recording_time != INT64_MAX &&
1559         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1560                       AV_TIME_BASE_Q) >= 0) {
1561         ost->is_past_recording_time = 1;
1562         return 0;
1563     }
1564     return 1;
1565 }
1566
1567 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1568                          AVFrame *frame)
1569 {
1570     AVCodecContext *enc = ost->st->codec;
1571     AVPacket pkt;
1572     int got_packet = 0;
1573
1574     av_init_packet(&pkt);
1575     pkt.data = NULL;
1576     pkt.size = 0;
1577
1578     if (!check_recording_time(ost))
1579         return;
1580
1581     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1582         frame->pts = ost->sync_opts;
1583     ost->sync_opts = frame->pts + frame->nb_samples;
1584
1585     av_assert0(pkt.size || !pkt.data);
1586     update_benchmark(NULL);
1587     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1588         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1589         exit_program(1);
1590     }
1591     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1592
1593     if (got_packet) {
1594         if (pkt.pts != AV_NOPTS_VALUE)
1595             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1596         if (pkt.dts != AV_NOPTS_VALUE)
1597             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1598         if (pkt.duration > 0)
1599             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1600
1601         if (debug_ts) {
1602             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1603                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1604                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1605                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1606         }
1607
1608         write_frame(s, &pkt, ost);
1609
1610         audio_size += pkt.size;
1611         av_free_packet(&pkt);
1612     }
1613 }
1614
1615 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1616 {
1617     AVCodecContext *dec;
1618     AVPicture *picture2;
1619     AVPicture picture_tmp;
1620     uint8_t *buf = 0;
1621
1622     dec = ist->st->codec;
1623
1624     /* deinterlace : must be done before any resize */
1625     if (do_deinterlace) {
1626         int size;
1627
1628         /* create temporary picture */
1629         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1630         buf  = av_malloc(size);
1631         if (!buf)
1632             return;
1633
1634         picture2 = &picture_tmp;
1635         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1636
1637         if (avpicture_deinterlace(picture2, picture,
1638                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1639             /* if error, do not deinterlace */
1640             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1641             av_free(buf);
1642             buf = NULL;
1643             picture2 = picture;
1644         }
1645     } else {
1646         picture2 = picture;
1647     }
1648
1649     if (picture != picture2)
1650         *picture = *picture2;
1651     *bufp = buf;
1652 }
1653
1654 static void do_subtitle_out(AVFormatContext *s,
1655                             OutputStream *ost,
1656                             InputStream *ist,
1657                             AVSubtitle *sub,
1658                             int64_t pts)
1659 {
1660     int subtitle_out_max_size = 1024 * 1024;
1661     int subtitle_out_size, nb, i;
1662     AVCodecContext *enc;
1663     AVPacket pkt;
1664
1665     if (pts == AV_NOPTS_VALUE) {
1666         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1667         if (exit_on_error)
1668             exit_program(1);
1669         return;
1670     }
1671
1672     enc = ost->st->codec;
1673
1674     if (!subtitle_out) {
1675         subtitle_out = av_malloc(subtitle_out_max_size);
1676     }
1677
1678     /* Note: DVB subtitle need one packet to draw them and one other
1679        packet to clear them */
1680     /* XXX: signal it in the codec context ? */
1681     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1682         nb = 2;
1683     else
1684         nb = 1;
1685
1686     for (i = 0; i < nb; i++) {
1687         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1688         if (!check_recording_time(ost))
1689             return;
1690
1691         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1692         // start_display_time is required to be 0
1693         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1694         sub->end_display_time  -= sub->start_display_time;
1695         sub->start_display_time = 0;
1696         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1697                                                     subtitle_out_max_size, sub);
1698         if (subtitle_out_size < 0) {
1699             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1700             exit_program(1);
1701         }
1702
1703         av_init_packet(&pkt);
1704         pkt.data = subtitle_out;
1705         pkt.size = subtitle_out_size;
1706         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1707         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1708         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1709             /* XXX: the pts correction is handled here. Maybe handling
1710                it in the codec would be better */
1711             if (i == 0)
1712                 pkt.pts += 90 * sub->start_display_time;
1713             else
1714                 pkt.pts += 90 * sub->end_display_time;
1715         }
1716         write_frame(s, &pkt, ost);
1717         subtitle_size += pkt.size;
1718     }
1719 }
1720
1721 static void do_video_out(AVFormatContext *s,
1722                          OutputStream *ost,
1723                          AVFrame *in_picture,
1724                          float quality)
1725 {
1726     int ret, format_video_sync;
1727     AVPacket pkt;
1728     AVCodecContext *enc = ost->st->codec;
1729     int nb_frames, i;
1730     double sync_ipts, delta;
1731     double duration = 0;
1732     int frame_size = 0;
1733     InputStream *ist = NULL;
1734
1735     if (ost->source_index >= 0)
1736         ist = input_streams[ost->source_index];
1737
1738     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1739         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1740
1741     sync_ipts = in_picture->pts;
1742     delta = sync_ipts - ost->sync_opts + duration;
1743
1744     /* by default, we output a single frame */
1745     nb_frames = 1;
1746
1747     format_video_sync = video_sync_method;
1748     if (format_video_sync == VSYNC_AUTO)
1749         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1750
1751     switch (format_video_sync) {
1752     case VSYNC_CFR:
1753         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1754         if (delta < -1.1)
1755             nb_frames = 0;
1756         else if (delta > 1.1)
1757             nb_frames = lrintf(delta);
1758         break;
1759     case VSYNC_VFR:
1760         if (delta <= -0.6)
1761             nb_frames = 0;
1762         else if (delta > 0.6)
1763             ost->sync_opts = lrint(sync_ipts);
1764         break;
1765     case VSYNC_DROP:
1766     case VSYNC_PASSTHROUGH:
1767         ost->sync_opts = lrint(sync_ipts);
1768         break;
1769     default:
1770         av_assert0(0);
1771     }
1772
1773     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1774     if (nb_frames == 0) {
1775         nb_frames_drop++;
1776         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1777         return;
1778     } else if (nb_frames > 1) {
1779         if (nb_frames > dts_error_threshold * 30) {
1780             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
1781             nb_frames_drop++;
1782             return;
1783         }
1784         nb_frames_dup += nb_frames - 1;
1785         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1786     }
1787
1788   /* duplicates frame if needed */
1789   for (i = 0; i < nb_frames; i++) {
1790     av_init_packet(&pkt);
1791     pkt.data = NULL;
1792     pkt.size = 0;
1793
1794     in_picture->pts = ost->sync_opts;
1795
1796     if (!check_recording_time(ost))
1797         return;
1798
1799     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1800         enc->codec->id == CODEC_ID_RAWVIDEO) {
1801         /* raw pictures are written as AVPicture structure to
1802            avoid any copies. We support temporarily the older
1803            method. */
1804         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1805         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1806         pkt.data   = (uint8_t *)in_picture;
1807         pkt.size   =  sizeof(AVPicture);
1808         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1809         pkt.flags |= AV_PKT_FLAG_KEY;
1810
1811         write_frame(s, &pkt, ost);
1812         video_size += pkt.size;
1813     } else {
1814         int got_packet;
1815         AVFrame big_picture;
1816
1817         big_picture = *in_picture;
1818         /* better than nothing: use input picture interlaced
1819            settings */
1820         big_picture.interlaced_frame = in_picture->interlaced_frame;
1821         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1822             if (ost->top_field_first == -1)
1823                 big_picture.top_field_first = in_picture->top_field_first;
1824             else
1825                 big_picture.top_field_first = !!ost->top_field_first;
1826         }
1827
1828         /* handles same_quant here. This is not correct because it may
1829            not be a global option */
1830         big_picture.quality = quality;
1831         if (!enc->me_threshold)
1832             big_picture.pict_type = 0;
1833         if (ost->forced_kf_index < ost->forced_kf_count &&
1834             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1835             big_picture.pict_type = AV_PICTURE_TYPE_I;
1836             ost->forced_kf_index++;
1837         }
1838         update_benchmark(NULL);
1839         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1840         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1841         if (ret < 0) {
1842             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1843             exit_program(1);
1844         }
1845
1846         if (got_packet) {
1847             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1848                 pkt.pts = ost->sync_opts;
1849
1850             if (pkt.pts != AV_NOPTS_VALUE)
1851                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1852             if (pkt.dts != AV_NOPTS_VALUE)
1853                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1854
1855             if (debug_ts) {
1856                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1857                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1858                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1859                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1860             }
1861
1862             write_frame(s, &pkt, ost);
1863             frame_size = pkt.size;
1864             video_size += pkt.size;
1865             av_free_packet(&pkt);
1866
1867             /* if two pass, output log */
1868             if (ost->logfile && enc->stats_out) {
1869                 fprintf(ost->logfile, "%s", enc->stats_out);
1870             }
1871         }
1872     }
1873     ost->sync_opts++;
1874     /*
1875      * For video, number of frames in == number of packets out.
1876      * But there may be reordering, so we can't throw away frames on encoder
1877      * flush, we need to limit them here, before they go into encoder.
1878      */
1879     ost->frame_number++;
1880   }
1881
1882     if (vstats_filename && frame_size)
1883         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1884 }
1885
1886 static double psnr(double d)
1887 {
1888     return -10.0 * log(d) / log(10.0);
1889 }
1890
1891 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1892                            int frame_size)
1893 {
1894     AVCodecContext *enc;
1895     int frame_number;
1896     double ti1, bitrate, avg_bitrate;
1897
1898     /* this is executed just the first time do_video_stats is called */
1899     if (!vstats_file) {
1900         vstats_file = fopen(vstats_filename, "w");
1901         if (!vstats_file) {
1902             perror("fopen");
1903             exit_program(1);
1904         }
1905     }
1906
1907     enc = ost->st->codec;
1908     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1909         frame_number = ost->frame_number;
1910         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1911         if (enc->flags&CODEC_FLAG_PSNR)
1912             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1913
1914         fprintf(vstats_file,"f_size= %6d ", frame_size);
1915         /* compute pts value */
1916         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1917         if (ti1 < 0.01)
1918             ti1 = 0.01;
1919
1920         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1921         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1922         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1923                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1924         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1925     }
1926 }
1927
1928 /* check for new output on any of the filtergraphs */
1929 static int poll_filters(void)
1930 {
1931     AVFilterBufferRef *picref;
1932     AVFrame *filtered_frame = NULL;
1933     int i, ret, ret_all;
1934     unsigned nb_success = 1, av_uninit(nb_eof);
1935     int64_t frame_pts;
1936
1937     while (1) {
1938         /* Reap all buffers present in the buffer sinks */
1939         for (i = 0; i < nb_output_streams; i++) {
1940             OutputStream *ost = output_streams[i];
1941             OutputFile    *of = output_files[ost->file_index];
1942             int ret = 0;
1943
1944             if (!ost->filter)
1945                 continue;
1946
1947             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1948                 return AVERROR(ENOMEM);
1949             } else
1950                 avcodec_get_frame_defaults(ost->filtered_frame);
1951             filtered_frame = ost->filtered_frame;
1952
1953             while (1) {
1954                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1955                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
1956                 if (ret < 0) {
1957                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1958                         char buf[256];
1959                         av_strerror(ret, buf, sizeof(buf));
1960                         av_log(NULL, AV_LOG_WARNING,
1961                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1962                     }
1963                     break;
1964                 }
1965                 frame_pts = AV_NOPTS_VALUE;
1966                 if (picref->pts != AV_NOPTS_VALUE) {
1967                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1968                                                     ost->filter->filter->inputs[0]->time_base,
1969                                                     ost->st->codec->time_base) -
1970                                         av_rescale_q(of->start_time,
1971                                                     AV_TIME_BASE_Q,
1972                                                     ost->st->codec->time_base);
1973
1974                     if (of->start_time && filtered_frame->pts < 0) {
1975                         avfilter_unref_buffer(picref);
1976                         continue;
1977                     }
1978                 }
1979                 //if (ost->source_index >= 0)
1980                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1981
1982
1983                 switch (ost->filter->filter->inputs[0]->type) {
1984                 case AVMEDIA_TYPE_VIDEO:
1985                     avfilter_copy_buf_props(filtered_frame, picref);
1986                     filtered_frame->pts = frame_pts;
1987                     if (!ost->frame_aspect_ratio)
1988                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1989
1990                     do_video_out(of->ctx, ost, filtered_frame,
1991                                  same_quant ? ost->last_quality :
1992                                               ost->st->codec->global_quality);
1993                     break;
1994                 case AVMEDIA_TYPE_AUDIO:
1995                     avfilter_copy_buf_props(filtered_frame, picref);
1996                     filtered_frame->pts = frame_pts;
1997                     do_audio_out(of->ctx, ost, filtered_frame);
1998                     break;
1999                 default:
2000                     // TODO support subtitle filters
2001                     av_assert0(0);
2002                 }
2003
2004                 avfilter_unref_buffer(picref);
2005             }
2006         }
2007         if (!nb_success) /* from last round */
2008             break;
2009         /* Request frames through all the graphs */
2010         ret_all = nb_success = nb_eof = 0;
2011         for (i = 0; i < nb_filtergraphs; i++) {
2012             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2013             if (!ret) {
2014                 nb_success++;
2015             } else if (ret == AVERROR_EOF) {
2016                 nb_eof++;
2017             } else if (ret != AVERROR(EAGAIN)) {
2018                 char buf[256];
2019                 av_strerror(ret, buf, sizeof(buf));
2020                 av_log(NULL, AV_LOG_WARNING,
2021                        "Error in request_frame(): %s\n", buf);
2022                 ret_all = ret;
2023             }
2024         }
2025         /* Try again if anything succeeded */
2026     }
2027     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2028 }
2029
2030 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2031 {
2032     char buf[1024];
2033     AVBPrint buf_script;
2034     OutputStream *ost;
2035     AVFormatContext *oc;
2036     int64_t total_size;
2037     AVCodecContext *enc;
2038     int frame_number, vid, i;
2039     double bitrate;
2040     int64_t pts = INT64_MAX;
2041     static int64_t last_time = -1;
2042     static int qp_histogram[52];
2043     int hours, mins, secs, us;
2044
2045     if (!print_stats && !is_last_report && !progress_avio)
2046         return;
2047
2048     if (!is_last_report) {
2049         if (last_time == -1) {
2050             last_time = cur_time;
2051             return;
2052         }
2053         if ((cur_time - last_time) < 500000)
2054             return;
2055         last_time = cur_time;
2056     }
2057
2058
2059     oc = output_files[0]->ctx;
2060
2061     total_size = avio_size(oc->pb);
2062     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2063         total_size = avio_tell(oc->pb);
2064         if (total_size < 0)
2065             total_size = 0;
2066     }
2067
2068     buf[0] = '\0';
2069     vid = 0;
2070     av_bprint_init(&buf_script, 0, 1);
2071     for (i = 0; i < nb_output_streams; i++) {
2072         float q = -1;
2073         ost = output_streams[i];
2074         enc = ost->st->codec;
2075         if (!ost->stream_copy && enc->coded_frame)
2076             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2077         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2078             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2079             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2080                        ost->file_index, ost->index, q);
2081         }
2082         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2083             float fps, t = (cur_time-timer_start) / 1000000.0;
2084
2085             frame_number = ost->frame_number;
2086             fps = t > 1 ? frame_number / t : 0;
2087             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2088                      frame_number, fps < 9.95, fps, q);
2089             av_bprintf(&buf_script, "frame=%d\n", frame_number);
2090             av_bprintf(&buf_script, "fps=%.1f\n", fps);
2091             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2092                        ost->file_index, ost->index, q);
2093             if (is_last_report)
2094                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2095             if (qp_hist) {
2096                 int j;
2097                 int qp = lrintf(q);
2098                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2099                     qp_histogram[qp]++;
2100                 for (j = 0; j < 32; j++)
2101                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2102             }
2103             if (enc->flags&CODEC_FLAG_PSNR) {
2104                 int j;
2105                 double error, error_sum = 0;
2106                 double scale, scale_sum = 0;
2107                 double p;
2108                 char type[3] = { 'Y','U','V' };
2109                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2110                 for (j = 0; j < 3; j++) {
2111                     if (is_last_report) {
2112                         error = enc->error[j];
2113                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2114                     } else {
2115                         error = enc->coded_frame->error[j];
2116                         scale = enc->width * enc->height * 255.0 * 255.0;
2117                     }
2118                     if (j)
2119                         scale /= 4;
2120                     error_sum += error;
2121                     scale_sum += scale;
2122                     p = psnr(error / scale);
2123                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
2124                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
2125                                ost->file_index, ost->index, type[i] | 32, p);
2126                 }
2127                 p = psnr(error_sum / scale_sum);
2128                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2129                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
2130                            ost->file_index, ost->index, p);
2131             }
2132             vid = 1;
2133         }
2134         /* compute min output value */
2135         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2136                                       ost->st->time_base, AV_TIME_BASE_Q));
2137     }
2138
2139     secs = pts / AV_TIME_BASE;
2140     us = pts % AV_TIME_BASE;
2141     mins = secs / 60;
2142     secs %= 60;
2143     hours = mins / 60;
2144     mins %= 60;
2145
2146     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2147
2148     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2149              "size=%8.0fkB time=", total_size / 1024.0);
2150     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2151              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2152              (100 * us) / AV_TIME_BASE);
2153     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2154              "bitrate=%6.1fkbits/s", bitrate);
2155     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
2156     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
2157     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
2158                hours, mins, secs, us);
2159
2160     if (nb_frames_dup || nb_frames_drop)
2161         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2162                 nb_frames_dup, nb_frames_drop);
2163     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
2164     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
2165
2166     if (print_stats || is_last_report) {
2167     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2168
2169     fflush(stderr);
2170     }
2171
2172     if (progress_avio) {
2173         av_bprintf(&buf_script, "progress=%s\n",
2174                    is_last_report ? "end" : "continue");
2175         avio_write(progress_avio, buf_script.str,
2176                    FFMIN(buf_script.len, buf_script.size - 1));
2177         avio_flush(progress_avio);
2178         av_bprint_finalize(&buf_script, NULL);
2179         if (is_last_report) {
2180             avio_close(progress_avio);
2181             progress_avio = NULL;
2182         }
2183     }
2184
2185     if (is_last_report) {
2186         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
2187         av_log(NULL, AV_LOG_INFO, "\n");
2188         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
2189                video_size / 1024.0,
2190                audio_size / 1024.0,
2191                subtitle_size / 1024.0,
2192                extra_size / 1024.0,
2193                100.0 * (total_size - raw) / raw
2194         );
2195         if(video_size + audio_size + subtitle_size + extra_size == 0){
2196             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2197         }
2198     }
2199 }
2200
2201 static void flush_encoders(void)
2202 {
2203     int i, ret;
2204
2205     for (i = 0; i < nb_output_streams; i++) {
2206         OutputStream   *ost = output_streams[i];
2207         AVCodecContext *enc = ost->st->codec;
2208         AVFormatContext *os = output_files[ost->file_index]->ctx;
2209         int stop_encoding = 0;
2210
2211         if (!ost->encoding_needed)
2212             continue;
2213
2214         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2215             continue;
2216         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2217             continue;
2218
2219         for (;;) {
2220             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2221             const char *desc;
2222             int64_t *size;
2223
2224             switch (ost->st->codec->codec_type) {
2225             case AVMEDIA_TYPE_AUDIO:
2226                 encode = avcodec_encode_audio2;
2227                 desc   = "Audio";
2228                 size   = &audio_size;
2229                 break;
2230             case AVMEDIA_TYPE_VIDEO:
2231                 encode = avcodec_encode_video2;
2232                 desc   = "Video";
2233                 size   = &video_size;
2234                 break;
2235             default:
2236                 stop_encoding = 1;
2237             }
2238
2239             if (encode) {
2240                 AVPacket pkt;
2241                 int got_packet;
2242                 av_init_packet(&pkt);
2243                 pkt.data = NULL;
2244                 pkt.size = 0;
2245
2246                 update_benchmark(NULL);
2247                 ret = encode(enc, &pkt, NULL, &got_packet);
2248                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2249                 if (ret < 0) {
2250                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2251                     exit_program(1);
2252                 }
2253                 *size += pkt.size;
2254                 if (ost->logfile && enc->stats_out) {
2255                     fprintf(ost->logfile, "%s", enc->stats_out);
2256                 }
2257                 if (!got_packet) {
2258                     stop_encoding = 1;
2259                     break;
2260                 }
2261                 if (pkt.pts != AV_NOPTS_VALUE)
2262                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2263                 if (pkt.dts != AV_NOPTS_VALUE)
2264                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2265                 write_frame(os, &pkt, ost);
2266             }
2267
2268             if (stop_encoding)
2269                 break;
2270         }
2271     }
2272 }
2273
2274 /*
2275  * Check whether a packet from ist should be written into ost at this time
2276  */
2277 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2278 {
2279     OutputFile *of = output_files[ost->file_index];
2280     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2281
2282     if (ost->source_index != ist_index)
2283         return 0;
2284
2285     if (of->start_time && ist->pts < of->start_time)
2286         return 0;
2287
2288     return 1;
2289 }
2290
2291 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2292 {
2293     OutputFile *of = output_files[ost->file_index];
2294     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2295     AVPicture pict;
2296     AVPacket opkt;
2297
2298     av_init_packet(&opkt);
2299
2300     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2301         !ost->copy_initial_nonkeyframes)
2302         return;
2303
2304     if (of->recording_time != INT64_MAX &&
2305         ist->pts >= of->recording_time + of->start_time) {
2306         ost->is_past_recording_time = 1;
2307         return;
2308     }
2309
2310     /* force the input stream PTS */
2311     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2312         audio_size += pkt->size;
2313     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2314         video_size += pkt->size;
2315         ost->sync_opts++;
2316     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2317         subtitle_size += pkt->size;
2318     }
2319
2320     if (pkt->pts != AV_NOPTS_VALUE)
2321         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2322     else
2323         opkt.pts = AV_NOPTS_VALUE;
2324
2325     if (pkt->dts == AV_NOPTS_VALUE)
2326         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2327     else
2328         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2329     opkt.dts -= ost_tb_start_time;
2330
2331     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2332     opkt.flags    = pkt->flags;
2333
2334     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2335     if (  ost->st->codec->codec_id != CODEC_ID_H264
2336        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2337        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2338        && ost->st->codec->codec_id != CODEC_ID_VC1
2339        ) {
2340         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2341             opkt.destruct = av_destruct_packet;
2342     } else {
2343         opkt.data = pkt->data;
2344         opkt.size = pkt->size;
2345     }
2346     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2347         /* store AVPicture in AVPacket, as expected by the output format */
2348         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2349         opkt.data = (uint8_t *)&pict;
2350         opkt.size = sizeof(AVPicture);
2351         opkt.flags |= AV_PKT_FLAG_KEY;
2352     }
2353
2354     write_frame(of->ctx, &opkt, ost);
2355     ost->st->codec->frame_number++;
2356     av_free_packet(&opkt);
2357 }
2358
2359 static void rate_emu_sleep(InputStream *ist)
2360 {
2361     if (input_files[ist->file_index]->rate_emu) {
2362         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2363         int64_t now = av_gettime() - ist->start;
2364         if (pts > now)
2365             av_usleep(pts - now);
2366     }
2367 }
2368
2369 static int guess_input_channel_layout(InputStream *ist)
2370 {
2371     AVCodecContext *dec = ist->st->codec;
2372
2373     if (!dec->channel_layout) {
2374         char layout_name[256];
2375
2376         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2377         if (!dec->channel_layout)
2378             return 0;
2379         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2380                                      dec->channels, dec->channel_layout);
2381         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2382                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2383     }
2384     return 1;
2385 }
2386
2387 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2388 {
2389     AVFrame *decoded_frame;
2390     AVCodecContext *avctx = ist->st->codec;
2391     int i, ret, resample_changed;
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 the decoder provides a pts, use it instead of the last packet pts.
2420        the decoder could be delaying output by a packet or more. */
2421     if (decoded_frame->pts != AV_NOPTS_VALUE) {
2422         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
2423     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
2424         decoded_frame->pts = decoded_frame->pkt_pts;
2425         pkt->pts           = AV_NOPTS_VALUE;
2426     } else if (pkt->pts != AV_NOPTS_VALUE) {
2427         decoded_frame->pts = pkt->pts;
2428         pkt->pts           = AV_NOPTS_VALUE;
2429     }else
2430         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2431
2432
2433 #if 1
2434     /* increment next_dts to use for the case where the input stream does not
2435        have timestamps or there are multiple frames in the packet */
2436     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2437                      avctx->sample_rate;
2438     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2439                      avctx->sample_rate;
2440 #endif
2441
2442     rate_emu_sleep(ist);
2443
2444     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2445                        ist->resample_channels       != avctx->channels               ||
2446                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2447                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2448     if (resample_changed) {
2449         char layout1[64], layout2[64];
2450
2451         if (!guess_input_channel_layout(ist)) {
2452             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2453                    "layout for Input Stream #%d.%d\n", ist->file_index,
2454                    ist->st->index);
2455             exit_program(1);
2456         }
2457         decoded_frame->channel_layout = avctx->channel_layout;
2458
2459         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2460                                      ist->resample_channel_layout);
2461         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2462                                      decoded_frame->channel_layout);
2463
2464         av_log(NULL, AV_LOG_INFO,
2465                "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",
2466                ist->file_index, ist->st->index,
2467                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2468                ist->resample_channels, layout1,
2469                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2470                avctx->channels, layout2);
2471
2472         ist->resample_sample_fmt     = decoded_frame->format;
2473         ist->resample_sample_rate    = decoded_frame->sample_rate;
2474         ist->resample_channel_layout = decoded_frame->channel_layout;
2475         ist->resample_channels       = avctx->channels;
2476
2477         for (i = 0; i < nb_filtergraphs; i++)
2478             if (ist_in_filtergraph(filtergraphs[i], ist)) {
2479                 FilterGraph *fg = filtergraphs[i];
2480                 int j;
2481                 if (configure_filtergraph(fg) < 0) {
2482                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2483                     exit_program(1);
2484                 }
2485                 for (j = 0; j < fg->nb_outputs; j++) {
2486                     OutputStream *ost = fg->outputs[j]->ost;
2487                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2488                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2489                         av_buffersink_set_frame_size(ost->filter->filter,
2490                                                      ost->st->codec->frame_size);
2491                 }
2492             }
2493     }
2494
2495     if (decoded_frame->pts != AV_NOPTS_VALUE)
2496         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
2497                                           ist->st->time_base,
2498                                           (AVRational){1, ist->st->codec->sample_rate});
2499     for (i = 0; i < ist->nb_filters; i++)
2500         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2501
2502     decoded_frame->pts = AV_NOPTS_VALUE;
2503
2504     return ret;
2505 }
2506
2507 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2508 {
2509     AVFrame *decoded_frame;
2510     void *buffer_to_free = NULL;
2511     int i, ret = 0, resample_changed;
2512     int64_t best_effort_timestamp;
2513     AVRational *frame_sample_aspect;
2514     float quality;
2515
2516     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2517         return AVERROR(ENOMEM);
2518     else
2519         avcodec_get_frame_defaults(ist->decoded_frame);
2520     decoded_frame = ist->decoded_frame;
2521     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2522
2523     update_benchmark(NULL);
2524     ret = avcodec_decode_video2(ist->st->codec,
2525                                 decoded_frame, got_output, pkt);
2526     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2527     if (ret < 0)
2528         return ret;
2529
2530     quality = same_quant ? decoded_frame->quality : 0;
2531     if (!*got_output) {
2532         /* no picture yet */
2533         if (!pkt->size)
2534             for (i = 0; i < ist->nb_filters; i++)
2535                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2536         return ret;
2537     }
2538
2539     if(ist->top_field_first>=0)
2540         decoded_frame->top_field_first = ist->top_field_first;
2541
2542     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2543     if(best_effort_timestamp != AV_NOPTS_VALUE)
2544         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2545
2546     if (debug_ts) {
2547         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2548                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
2549                 ist->st->index, av_ts2str(decoded_frame->pts),
2550                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2551                 best_effort_timestamp,
2552                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2553                 decoded_frame->key_frame, decoded_frame->pict_type);
2554     }
2555
2556     pkt->size = 0;
2557     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2558
2559     rate_emu_sleep(ist);
2560
2561     if (ist->st->sample_aspect_ratio.num)
2562         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2563
2564     resample_changed = ist->resample_width   != decoded_frame->width  ||
2565                        ist->resample_height  != decoded_frame->height ||
2566                        ist->resample_pix_fmt != decoded_frame->format;
2567     if (resample_changed) {
2568         av_log(NULL, AV_LOG_INFO,
2569                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2570                ist->file_index, ist->st->index,
2571                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2572                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2573
2574         ist->resample_width   = decoded_frame->width;
2575         ist->resample_height  = decoded_frame->height;
2576         ist->resample_pix_fmt = decoded_frame->format;
2577
2578         for (i = 0; i < nb_filtergraphs; i++)
2579             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2580                 configure_filtergraph(filtergraphs[i]) < 0) {
2581                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2582                 exit_program(1);
2583             }
2584     }
2585
2586     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2587     for (i = 0; i < ist->nb_filters; i++) {
2588         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2589                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2590                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2591         // XXX what an ugly hack
2592         if (ist->filters[i]->graph->nb_outputs == 1)
2593             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2594
2595         if (!frame_sample_aspect->num)
2596             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2597         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2598             FrameBuffer      *buf = decoded_frame->opaque;
2599             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2600                                         decoded_frame->data, decoded_frame->linesize,
2601                                         AV_PERM_READ | AV_PERM_PRESERVE,
2602                                         ist->st->codec->width, ist->st->codec->height,
2603                                         ist->st->codec->pix_fmt);
2604
2605             avfilter_copy_frame_props(fb, decoded_frame);
2606             fb->buf->priv           = buf;
2607             fb->buf->free           = filter_release_buffer;
2608
2609             av_assert0(buf->refcount>0);
2610             buf->refcount++;
2611             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2612                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2613                                  AV_BUFFERSRC_FLAG_NO_COPY);
2614         } else
2615         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2616             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2617             exit_program(1);
2618         }
2619
2620     }
2621
2622     av_free(buffer_to_free);
2623     return ret;
2624 }
2625
2626 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2627 {
2628     AVSubtitle subtitle;
2629     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2630                                           &subtitle, got_output, pkt);
2631     if (ret < 0)
2632         return ret;
2633     if (!*got_output)
2634         return ret;
2635
2636     rate_emu_sleep(ist);
2637
2638     for (i = 0; i < nb_output_streams; i++) {
2639         OutputStream *ost = output_streams[i];
2640
2641         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2642             continue;
2643
2644         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2645     }
2646
2647     avsubtitle_free(&subtitle);
2648     return ret;
2649 }
2650
2651 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2652 static int output_packet(InputStream *ist, const AVPacket *pkt)
2653 {
2654     int ret = 0, i;
2655     int got_output;
2656
2657     AVPacket avpkt;
2658     if (!ist->saw_first_ts) {
2659         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;
2660         ist->pts = 0;
2661         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2662             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2663             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2664         }
2665         ist->saw_first_ts = 1;
2666     }
2667
2668     if (ist->next_dts == AV_NOPTS_VALUE)
2669         ist->next_dts = ist->dts;
2670     if (ist->next_pts == AV_NOPTS_VALUE)
2671         ist->next_pts = ist->pts;
2672
2673     if (pkt == NULL) {
2674         /* EOF handling */
2675         av_init_packet(&avpkt);
2676         avpkt.data = NULL;
2677         avpkt.size = 0;
2678         goto handle_eof;
2679     } else {
2680         avpkt = *pkt;
2681     }
2682
2683     if (pkt->dts != AV_NOPTS_VALUE) {
2684         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2685         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2686             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2687     }
2688
2689     // while we have more to decode or while the decoder did output something on EOF
2690     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2691         int duration;
2692     handle_eof:
2693
2694         ist->pts = ist->next_pts;
2695         ist->dts = ist->next_dts;
2696
2697         if (avpkt.size && avpkt.size != pkt->size) {
2698             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2699                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2700             ist->showed_multi_packet_warning = 1;
2701         }
2702
2703         switch (ist->st->codec->codec_type) {
2704         case AVMEDIA_TYPE_AUDIO:
2705             ret = decode_audio    (ist, &avpkt, &got_output);
2706             break;
2707         case AVMEDIA_TYPE_VIDEO:
2708             ret = decode_video    (ist, &avpkt, &got_output);
2709             if (avpkt.duration) {
2710                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2711             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2712                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2713                 duration = ((int64_t)AV_TIME_BASE *
2714                                 ist->st->codec->time_base.num * ticks) /
2715                                 ist->st->codec->time_base.den;
2716             } else
2717                 duration = 0;
2718
2719             if(ist->dts != AV_NOPTS_VALUE && duration) {
2720                 ist->next_dts += duration;
2721             }else
2722                 ist->next_dts = AV_NOPTS_VALUE;
2723
2724             if (got_output)
2725                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2726             break;
2727         case AVMEDIA_TYPE_SUBTITLE:
2728             ret = transcode_subtitles(ist, &avpkt, &got_output);
2729             break;
2730         default:
2731             return -1;
2732         }
2733
2734         if (ret < 0)
2735             return ret;
2736
2737         avpkt.dts=
2738         avpkt.pts= AV_NOPTS_VALUE;
2739
2740         // touch data and size only if not EOF
2741         if (pkt) {
2742             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2743                 ret = avpkt.size;
2744             avpkt.data += ret;
2745             avpkt.size -= ret;
2746         }
2747         if (!got_output) {
2748             continue;
2749         }
2750     }
2751
2752     /* handle stream copy */
2753     if (!ist->decoding_needed) {
2754         rate_emu_sleep(ist);
2755         ist->dts = ist->next_dts;
2756         switch (ist->st->codec->codec_type) {
2757         case AVMEDIA_TYPE_AUDIO:
2758             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2759                              ist->st->codec->sample_rate;
2760             break;
2761         case AVMEDIA_TYPE_VIDEO:
2762             if (pkt->duration) {
2763                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2764             } else if(ist->st->codec->time_base.num != 0) {
2765                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2766                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2767                                   ist->st->codec->time_base.num * ticks) /
2768                                   ist->st->codec->time_base.den;
2769             }
2770             break;
2771         }
2772         ist->pts = ist->dts;
2773         ist->next_pts = ist->next_dts;
2774     }
2775     for (i = 0; pkt && i < nb_output_streams; i++) {
2776         OutputStream *ost = output_streams[i];
2777
2778         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2779             continue;
2780
2781         do_streamcopy(ist, ost, pkt);
2782     }
2783
2784     return 0;
2785 }
2786
2787 static void print_sdp(void)
2788 {
2789     char sdp[2048];
2790     int i;
2791     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2792
2793     if (!avc)
2794         exit_program(1);
2795     for (i = 0; i < nb_output_files; i++)
2796         avc[i] = output_files[i]->ctx;
2797
2798     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2799     printf("SDP:\n%s\n", sdp);
2800     fflush(stdout);
2801     av_freep(&avc);
2802 }
2803
2804 static int init_input_stream(int ist_index, char *error, int error_len)
2805 {
2806     InputStream *ist = input_streams[ist_index];
2807
2808     if (ist->decoding_needed) {
2809         AVCodec *codec = ist->dec;
2810         if (!codec) {
2811             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2812                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2813             return AVERROR(EINVAL);
2814         }
2815
2816         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2817         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2818             ist->st->codec->get_buffer     = codec_get_buffer;
2819             ist->st->codec->release_buffer = codec_release_buffer;
2820             ist->st->codec->opaque         = &ist->buffer_pool;
2821         }
2822
2823         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2824             av_dict_set(&ist->opts, "threads", "auto", 0);
2825         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2826             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2827                     ist->file_index, ist->st->index);
2828             return AVERROR(EINVAL);
2829         }
2830         assert_codec_experimental(ist->st->codec, 0);
2831         assert_avoptions(ist->opts);
2832     }
2833
2834     ist->next_pts = AV_NOPTS_VALUE;
2835     ist->next_dts = AV_NOPTS_VALUE;
2836     ist->is_start = 1;
2837
2838     return 0;
2839 }
2840
2841 static InputStream *get_input_stream(OutputStream *ost)
2842 {
2843     if (ost->source_index >= 0)
2844         return input_streams[ost->source_index];
2845     return NULL;
2846 }
2847
2848 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2849                                     AVCodecContext *avctx)
2850 {
2851     char *p;
2852     int n = 1, i;
2853     int64_t t;
2854
2855     for (p = kf; *p; p++)
2856         if (*p == ',')
2857             n++;
2858     ost->forced_kf_count = n;
2859     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2860     if (!ost->forced_kf_pts) {
2861         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2862         exit_program(1);
2863     }
2864
2865     p = kf;
2866     for (i = 0; i < n; i++) {
2867         char *next = strchr(p, ',');
2868
2869         if (next)
2870             *next++ = 0;
2871
2872         t = parse_time_or_die("force_key_frames", p, 1);
2873         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2874
2875         p = next;
2876     }
2877 }
2878
2879 static void report_new_stream(int input_index, AVPacket *pkt)
2880 {
2881     InputFile *file = input_files[input_index];
2882     AVStream *st = file->ctx->streams[pkt->stream_index];
2883
2884     if (pkt->stream_index < file->nb_streams_warn)
2885         return;
2886     av_log(file->ctx, AV_LOG_WARNING,
2887            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2888            av_get_media_type_string(st->codec->codec_type),
2889            input_index, pkt->stream_index,
2890            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2891     file->nb_streams_warn = pkt->stream_index + 1;
2892 }
2893
2894 static int transcode_init(void)
2895 {
2896     int ret = 0, i, j, k;
2897     AVFormatContext *oc;
2898     AVCodecContext *codec, *icodec = NULL;
2899     OutputStream *ost;
2900     InputStream *ist;
2901     char error[1024];
2902     int want_sdp = 1;
2903
2904     /* init framerate emulation */
2905     for (i = 0; i < nb_input_files; i++) {
2906         InputFile *ifile = input_files[i];
2907         if (ifile->rate_emu)
2908             for (j = 0; j < ifile->nb_streams; j++)
2909                 input_streams[j + ifile->ist_index]->start = av_gettime();
2910     }
2911
2912     /* output stream init */
2913     for (i = 0; i < nb_output_files; i++) {
2914         oc = output_files[i]->ctx;
2915         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2916             av_dump_format(oc, i, oc->filename, 1);
2917             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2918             return AVERROR(EINVAL);
2919         }
2920     }
2921
2922     /* init complex filtergraphs */
2923     for (i = 0; i < nb_filtergraphs; i++)
2924         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2925             return ret;
2926
2927     /* for each output stream, we compute the right encoding parameters */
2928     for (i = 0; i < nb_output_streams; i++) {
2929         ost = output_streams[i];
2930         oc  = output_files[ost->file_index]->ctx;
2931         ist = get_input_stream(ost);
2932
2933         if (ost->attachment_filename)
2934             continue;
2935
2936         codec  = ost->st->codec;
2937
2938         if (ist) {
2939             icodec = ist->st->codec;
2940
2941             ost->st->disposition          = ist->st->disposition;
2942             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2943             codec->chroma_sample_location = icodec->chroma_sample_location;
2944         }
2945
2946         if (ost->stream_copy) {
2947             uint64_t extra_size;
2948
2949             av_assert0(ist && !ost->filter);
2950
2951             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2952
2953             if (extra_size > INT_MAX) {
2954                 return AVERROR(EINVAL);
2955             }
2956
2957             /* if stream_copy is selected, no need to decode or encode */
2958             codec->codec_id   = icodec->codec_id;
2959             codec->codec_type = icodec->codec_type;
2960
2961             if (!codec->codec_tag) {
2962                 if (!oc->oformat->codec_tag ||
2963                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2964                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2965                     codec->codec_tag = icodec->codec_tag;
2966             }
2967
2968             codec->bit_rate       = icodec->bit_rate;
2969             codec->rc_max_rate    = icodec->rc_max_rate;
2970             codec->rc_buffer_size = icodec->rc_buffer_size;
2971             codec->field_order    = icodec->field_order;
2972             codec->extradata      = av_mallocz(extra_size);
2973             if (!codec->extradata) {
2974                 return AVERROR(ENOMEM);
2975             }
2976             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2977             codec->extradata_size= icodec->extradata_size;
2978             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2979
2980             codec->time_base = ist->st->time_base;
2981             /*
2982              * Avi is a special case here because it supports variable fps but
2983              * having the fps and timebase differe significantly adds quite some
2984              * overhead
2985              */
2986             if(!strcmp(oc->oformat->name, "avi")) {
2987                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2988                                  && av_q2d(ist->st->time_base) < 1.0/500
2989                     || copy_tb==0){
2990                     codec->time_base = icodec->time_base;
2991                     codec->time_base.num *= icodec->ticks_per_frame;
2992                     codec->time_base.den *= 2;
2993                     codec->ticks_per_frame = 2;
2994                 }
2995             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2996                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2997                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2998             ) {
2999                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
3000                                 && av_q2d(ist->st->time_base) < 1.0/500
3001                    || copy_tb==0){
3002                     codec->time_base = icodec->time_base;
3003                     codec->time_base.num *= icodec->ticks_per_frame;
3004                 }
3005             }
3006
3007             if(ost->frame_rate.num)
3008                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3009
3010             av_reduce(&codec->time_base.num, &codec->time_base.den,
3011                         codec->time_base.num, codec->time_base.den, INT_MAX);
3012
3013             switch (codec->codec_type) {
3014             case AVMEDIA_TYPE_AUDIO:
3015                 if (audio_volume != 256) {
3016                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3017                     exit_program(1);
3018                 }
3019                 codec->channel_layout     = icodec->channel_layout;
3020                 codec->sample_rate        = icodec->sample_rate;
3021                 codec->channels           = icodec->channels;
3022                 codec->frame_size         = icodec->frame_size;
3023                 codec->audio_service_type = icodec->audio_service_type;
3024                 codec->block_align        = icodec->block_align;
3025                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == CODEC_ID_MP3)
3026                     codec->block_align= 0;
3027                 if(codec->codec_id == CODEC_ID_AC3)
3028                     codec->block_align= 0;
3029                 break;
3030             case AVMEDIA_TYPE_VIDEO:
3031                 codec->pix_fmt            = icodec->pix_fmt;
3032                 codec->width              = icodec->width;
3033                 codec->height             = icodec->height;
3034                 codec->has_b_frames       = icodec->has_b_frames;
3035                 if (!codec->sample_aspect_ratio.num) {
3036                     codec->sample_aspect_ratio   =
3037                     ost->st->sample_aspect_ratio =
3038                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3039                         ist->st->codec->sample_aspect_ratio.num ?
3040                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3041                 }
3042                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3043                 break;
3044             case AVMEDIA_TYPE_SUBTITLE:
3045                 codec->width  = icodec->width;
3046                 codec->height = icodec->height;
3047                 break;
3048             case AVMEDIA_TYPE_DATA:
3049             case AVMEDIA_TYPE_ATTACHMENT:
3050                 break;
3051             default:
3052                 abort();
3053             }
3054         } else {
3055             if (!ost->enc)
3056                 ost->enc = avcodec_find_encoder(codec->codec_id);
3057             if (!ost->enc) {
3058                 /* should only happen when a default codec is not present. */
3059                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3060                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3061                 ret = AVERROR(EINVAL);
3062                 goto dump_format;
3063             }
3064
3065             if (ist)
3066                 ist->decoding_needed = 1;
3067             ost->encoding_needed = 1;
3068
3069             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3070                 if (ost->filter && !ost->frame_rate.num)
3071                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
3072                 if (ist && !ost->frame_rate.num)
3073                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3074                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3075                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3076                     ost->frame_rate = ost->enc->supported_framerates[idx];
3077                 }
3078             }
3079
3080             if (!ost->filter &&
3081                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3082                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3083                     FilterGraph *fg;
3084                     fg = init_simple_filtergraph(ist, ost);
3085                     if (configure_filtergraph(fg)) {
3086                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3087                         exit(1);
3088                     }
3089             }
3090
3091             switch (codec->codec_type) {
3092             case AVMEDIA_TYPE_AUDIO:
3093                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3094                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3095                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3096                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3097                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3098                 break;
3099             case AVMEDIA_TYPE_VIDEO:
3100                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3101                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
3102                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
3103                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3104                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3105                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3106                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3107                 }
3108                 for (j = 0; j < ost->forced_kf_count; j++)
3109                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3110                                                          AV_TIME_BASE_Q,
3111                                                          codec->time_base);
3112
3113                 codec->width  = ost->filter->filter->inputs[0]->w;
3114                 codec->height = ost->filter->filter->inputs[0]->h;
3115                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3116                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3117                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3118                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3119                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3120
3121                 if (!icodec ||
3122                     codec->width   != icodec->width  ||
3123                     codec->height  != icodec->height ||
3124                     codec->pix_fmt != icodec->pix_fmt) {
3125                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3126                 }
3127
3128                 if (ost->forced_keyframes)
3129                     parse_forced_key_frames(ost->forced_keyframes, ost,
3130                                             ost->st->codec);
3131                 break;
3132             case AVMEDIA_TYPE_SUBTITLE:
3133                 codec->time_base = (AVRational){1, 1000};
3134                 break;
3135             default:
3136                 abort();
3137                 break;
3138             }
3139             /* two pass mode */
3140             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3141                 char logfilename[1024];
3142                 FILE *f;
3143
3144                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3145                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3146                          i);
3147                 if (!strcmp(ost->enc->name, "libx264")) {
3148                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3149                 } else {
3150                     if (codec->flags & CODEC_FLAG_PASS2) {
3151                         char  *logbuffer;
3152                         size_t logbuffer_size;
3153                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3154                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3155                                    logfilename);
3156                             exit_program(1);
3157                         }
3158                         codec->stats_in = logbuffer;
3159                     }
3160                     if (codec->flags & CODEC_FLAG_PASS1) {
3161                         f = fopen(logfilename, "wb");
3162                         if (!f) {
3163                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3164                                 logfilename, strerror(errno));
3165                             exit_program(1);
3166                         }
3167                         ost->logfile = f;
3168                     }
3169                 }
3170             }
3171         }
3172     }
3173
3174     /* open each encoder */
3175     for (i = 0; i < nb_output_streams; i++) {
3176         ost = output_streams[i];
3177         if (ost->encoding_needed) {
3178             AVCodec      *codec = ost->enc;
3179             AVCodecContext *dec = NULL;
3180
3181             if ((ist = get_input_stream(ost)))
3182                 dec = ist->st->codec;
3183             if (dec && dec->subtitle_header) {
3184                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3185                 if (!ost->st->codec->subtitle_header) {
3186                     ret = AVERROR(ENOMEM);
3187                     goto dump_format;
3188                 }
3189                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3190                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3191             }
3192             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3193                 av_dict_set(&ost->opts, "threads", "auto", 0);
3194             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3195                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3196                         ost->file_index, ost->index);
3197                 ret = AVERROR(EINVAL);
3198                 goto dump_format;
3199             }
3200             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3201                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3202                 av_buffersink_set_frame_size(ost->filter->filter,
3203                                              ost->st->codec->frame_size);
3204             assert_codec_experimental(ost->st->codec, 1);
3205             assert_avoptions(ost->opts);
3206             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3207                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3208                                              " It takes bits/s as argument, not kbits/s\n");
3209             extra_size += ost->st->codec->extradata_size;
3210
3211             if (ost->st->codec->me_threshold)
3212                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3213         }
3214     }
3215
3216     /* init input streams */
3217     for (i = 0; i < nb_input_streams; i++)
3218         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3219             goto dump_format;
3220
3221     /* discard unused programs */
3222     for (i = 0; i < nb_input_files; i++) {
3223         InputFile *ifile = input_files[i];
3224         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3225             AVProgram *p = ifile->ctx->programs[j];
3226             int discard  = AVDISCARD_ALL;
3227
3228             for (k = 0; k < p->nb_stream_indexes; k++)
3229                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3230                     discard = AVDISCARD_DEFAULT;
3231                     break;
3232                 }
3233             p->discard = discard;
3234         }
3235     }
3236
3237     /* open files and write file headers */
3238     for (i = 0; i < nb_output_files; i++) {
3239         oc = output_files[i]->ctx;
3240         oc->interrupt_callback = int_cb;
3241         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3242             char errbuf[128];
3243             const char *errbuf_ptr = errbuf;
3244             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3245                 errbuf_ptr = strerror(AVUNERROR(ret));
3246             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3247             ret = AVERROR(EINVAL);
3248             goto dump_format;
3249         }
3250 //         assert_avoptions(output_files[i]->opts);
3251         if (strcmp(oc->oformat->name, "rtp")) {
3252             want_sdp = 0;
3253         }
3254     }
3255
3256  dump_format:
3257     /* dump the file output parameters - cannot be done before in case
3258        of stream copy */
3259     for (i = 0; i < nb_output_files; i++) {
3260         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3261     }
3262
3263     /* dump the stream mapping */
3264     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3265     for (i = 0; i < nb_input_streams; i++) {
3266         ist = input_streams[i];
3267
3268         for (j = 0; j < ist->nb_filters; j++) {
3269             if (ist->filters[j]->graph->graph_desc) {
3270                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3271                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3272                        ist->filters[j]->name);
3273                 if (nb_filtergraphs > 1)
3274                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3275                 av_log(NULL, AV_LOG_INFO, "\n");
3276             }
3277         }
3278     }
3279
3280     for (i = 0; i < nb_output_streams; i++) {
3281         ost = output_streams[i];
3282
3283         if (ost->attachment_filename) {
3284             /* an attached file */
3285             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3286                    ost->attachment_filename, ost->file_index, ost->index);
3287             continue;
3288         }
3289
3290         if (ost->filter && ost->filter->graph->graph_desc) {
3291             /* output from a complex graph */
3292             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3293             if (nb_filtergraphs > 1)
3294                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3295
3296             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3297                    ost->index, ost->enc ? ost->enc->name : "?");
3298             continue;
3299         }
3300
3301         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3302                input_streams[ost->source_index]->file_index,
3303                input_streams[ost->source_index]->st->index,
3304                ost->file_index,
3305                ost->index);
3306         if (ost->sync_ist != input_streams[ost->source_index])
3307             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3308                    ost->sync_ist->file_index,
3309                    ost->sync_ist->st->index);
3310         if (ost->stream_copy)
3311             av_log(NULL, AV_LOG_INFO, " (copy)");
3312         else
3313             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3314                    input_streams[ost->source_index]->dec->name : "?",
3315                    ost->enc ? ost->enc->name : "?");
3316         av_log(NULL, AV_LOG_INFO, "\n");
3317     }
3318
3319     if (ret) {
3320         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3321         return ret;
3322     }
3323
3324     if (want_sdp) {
3325         print_sdp();
3326     }
3327
3328     return 0;
3329 }
3330
3331 /**
3332  * @return 1 if there are still streams where more output is wanted,
3333  *         0 otherwise
3334  */
3335 static int need_output(void)
3336 {
3337     int i;
3338
3339     for (i = 0; i < nb_output_streams; i++) {
3340         OutputStream *ost    = output_streams[i];
3341         OutputFile *of       = output_files[ost->file_index];
3342         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3343
3344         if (ost->is_past_recording_time ||
3345             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3346             continue;
3347         if (ost->frame_number >= ost->max_frames) {
3348             int j;
3349             for (j = 0; j < of->ctx->nb_streams; j++)
3350                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3351             continue;
3352         }
3353
3354         return 1;
3355     }
3356
3357     return 0;
3358 }
3359
3360 static int input_acceptable(InputStream *ist)
3361 {
3362     av_assert1(!ist->discard);
3363     return !input_files[ist->file_index]->unavailable &&
3364            !input_files[ist->file_index]->eof_reached;
3365 }
3366
3367 static int find_graph_input(FilterGraph *graph)
3368 {
3369     int i, nb_req_max = 0, file_index = -1;
3370
3371     for (i = 0; i < graph->nb_inputs; i++) {
3372         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
3373         if (nb_req > nb_req_max) {
3374             InputStream *ist = graph->inputs[i]->ist;
3375             if (input_acceptable(ist)) {
3376                 nb_req_max = nb_req;
3377                 file_index = ist->file_index;
3378             }
3379         }
3380     }
3381
3382     return file_index;
3383 }
3384
3385 /**
3386  * Select the input file to read from.
3387  *
3388  * @return  >=0 index of the input file to use;
3389  *          -1  if no file is acceptable;
3390  *          -2  to read from filters without reading from a file
3391  */
3392 static int select_input_file(void)
3393 {
3394     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
3395     int64_t opts_min;
3396     OutputStream *ost;
3397     AVFilterBufferRef *dummy;
3398
3399     for (i = 0; i < nb_output_streams; i++)
3400         nb_active_out -= output_streams[i]->unavailable =
3401             output_streams[i]->is_past_recording_time;
3402     while (nb_active_out) {
3403         opts_min = INT64_MAX;
3404         ost_index = -1;
3405         for (i = 0; i < nb_output_streams; i++) {
3406             OutputStream *ost = output_streams[i];
3407             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3408                                         AV_TIME_BASE_Q);
3409             if (!ost->unavailable && opts < opts_min) {
3410                 opts_min  = opts;
3411                 ost_index = i;
3412             }
3413         }
3414         if (ost_index < 0)
3415             return -1;
3416
3417         ost = output_streams[ost_index];
3418         if (ost->source_index >= 0) {
3419             /* ost is directly connected to an input */
3420             InputStream *ist = input_streams[ost->source_index];
3421             if (input_acceptable(ist))
3422                 return ist->file_index;
3423         } else {
3424             /* ost is connected to a complex filtergraph */
3425             av_assert1(ost->filter);
3426             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
3427                                                AV_BUFFERSINK_FLAG_PEEK);
3428             if (ret >= 0)
3429                 return -2;
3430             ret = find_graph_input(ost->filter->graph);
3431             if (ret >= 0)
3432                 return ret;
3433         }
3434         ost->unavailable = 1;
3435         nb_active_out--;
3436     }
3437     return -1;
3438 }
3439
3440 static int check_keyboard_interaction(int64_t cur_time)
3441 {
3442     int i, ret, key;
3443     static int64_t last_time;
3444     if (received_nb_signals)
3445         return AVERROR_EXIT;
3446     /* read_key() returns 0 on EOF */
3447     if(cur_time - last_time >= 100000 && !run_as_daemon){
3448         key =  read_key();
3449         last_time = cur_time;
3450     }else
3451         key = -1;
3452     if (key == 'q')
3453         return AVERROR_EXIT;
3454     if (key == '+') av_log_set_level(av_log_get_level()+10);
3455     if (key == '-') av_log_set_level(av_log_get_level()-10);
3456     if (key == 's') qp_hist     ^= 1;
3457     if (key == 'h'){
3458         if (do_hex_dump){
3459             do_hex_dump = do_pkt_dump = 0;
3460         } else if(do_pkt_dump){
3461             do_hex_dump = 1;
3462         } else
3463             do_pkt_dump = 1;
3464         av_log_set_level(AV_LOG_DEBUG);
3465     }
3466     if (key == 'c' || key == 'C'){
3467         char buf[4096], target[64], command[256], arg[256] = {0};
3468         double time;
3469         int k, n = 0;
3470         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3471         i = 0;
3472         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3473             if (k > 0)
3474                 buf[i++] = k;
3475         buf[i] = 0;
3476         if (k > 0 &&
3477             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3478             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3479                    target, time, command, arg);
3480             for (i = 0; i < nb_filtergraphs; i++) {
3481                 FilterGraph *fg = filtergraphs[i];
3482                 if (fg->graph) {
3483                     if (time < 0) {
3484                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3485                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3486                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3487                     } else {
3488                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3489                     }
3490                 }
3491             }
3492         } else {
3493             av_log(NULL, AV_LOG_ERROR,
3494                    "Parse error, at least 3 arguments were expected, "
3495                    "only %d given in string '%s'\n", n, buf);
3496         }
3497     }
3498     if (key == 'd' || key == 'D'){
3499         int debug=0;
3500         if(key == 'D') {
3501             debug = input_streams[0]->st->codec->debug<<1;
3502             if(!debug) debug = 1;
3503             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3504                 debug += debug;
3505         }else
3506             if(scanf("%d", &debug)!=1)
3507                 fprintf(stderr,"error parsing debug value\n");
3508         for(i=0;i<nb_input_streams;i++) {
3509             input_streams[i]->st->codec->debug = debug;
3510         }
3511         for(i=0;i<nb_output_streams;i++) {
3512             OutputStream *ost = output_streams[i];
3513             ost->st->codec->debug = debug;
3514         }
3515         if(debug) av_log_set_level(AV_LOG_DEBUG);
3516         fprintf(stderr,"debug=%d\n", debug);
3517     }
3518     if (key == '?'){
3519         fprintf(stderr, "key    function\n"
3520                         "?      show this help\n"
3521                         "+      increase verbosity\n"
3522                         "-      decrease verbosity\n"
3523                         "c      Send command to filtergraph\n"
3524                         "D      cycle through available debug modes\n"
3525                         "h      dump packets/hex press to cycle through the 3 states\n"
3526                         "q      quit\n"
3527                         "s      Show QP histogram\n"
3528         );
3529     }
3530     return 0;
3531 }
3532
3533 #if HAVE_PTHREADS
3534 static void *input_thread(void *arg)
3535 {
3536     InputFile *f = arg;
3537     int ret = 0;
3538
3539     while (!transcoding_finished && ret >= 0) {
3540         AVPacket pkt;
3541         ret = av_read_frame(f->ctx, &pkt);
3542
3543         if (ret == AVERROR(EAGAIN)) {
3544             av_usleep(10000);
3545             ret = 0;
3546             continue;
3547         } else if (ret < 0)
3548             break;
3549
3550         pthread_mutex_lock(&f->fifo_lock);
3551         while (!av_fifo_space(f->fifo))
3552             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3553
3554         av_dup_packet(&pkt);
3555         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3556
3557         pthread_mutex_unlock(&f->fifo_lock);
3558     }
3559
3560     f->finished = 1;
3561     return NULL;
3562 }
3563
3564 static void free_input_threads(void)
3565 {
3566     int i;
3567
3568     if (nb_input_files == 1)
3569         return;
3570
3571     transcoding_finished = 1;
3572
3573     for (i = 0; i < nb_input_files; i++) {
3574         InputFile *f = input_files[i];
3575         AVPacket pkt;
3576
3577         if (!f->fifo || f->joined)
3578             continue;
3579
3580         pthread_mutex_lock(&f->fifo_lock);
3581         while (av_fifo_size(f->fifo)) {
3582             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3583             av_free_packet(&pkt);
3584         }
3585         pthread_cond_signal(&f->fifo_cond);
3586         pthread_mutex_unlock(&f->fifo_lock);
3587
3588         pthread_join(f->thread, NULL);
3589         f->joined = 1;
3590
3591         while (av_fifo_size(f->fifo)) {
3592             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3593             av_free_packet(&pkt);
3594         }
3595         av_fifo_free(f->fifo);
3596     }
3597 }
3598
3599 static int init_input_threads(void)
3600 {
3601     int i, ret;
3602
3603     if (nb_input_files == 1)
3604         return 0;
3605
3606     for (i = 0; i < nb_input_files; i++) {
3607         InputFile *f = input_files[i];
3608
3609         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3610             return AVERROR(ENOMEM);
3611
3612         pthread_mutex_init(&f->fifo_lock, NULL);
3613         pthread_cond_init (&f->fifo_cond, NULL);
3614
3615         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3616             return AVERROR(ret);
3617     }
3618     return 0;