Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88
89 #if HAVE_PTHREADS
90 #include <pthread.h>
91 #endif
92
93 #include <time.h>
94
95 #include "cmdutils.h"
96
97 #include "libavutil/avassert.h"
98
99 #define VSYNC_AUTO       -1
100 #define VSYNC_PASSTHROUGH 0
101 #define VSYNC_CFR         1
102 #define VSYNC_VFR         2
103 #define VSYNC_DROP        0xff
104
105 #define SINKA
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 using_stdin = 0;
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 extra_size = 0;
167 static int nb_frames_dup = 0;
168 static int nb_frames_drop = 0;
169 static int input_sync;
170
171 static float dts_delta_threshold = 10;
172 static float dts_error_threshold = 3600*30;
173
174 static int print_stats = 1;
175 static int debug_ts = 0;
176 static int current_time;
177
178 #if HAVE_PTHREADS
179 /* signal to input threads that they should exit; set by the main thread */
180 static int transcoding_finished;
181 #endif
182
183 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
184
185 typedef struct InputFilter {
186     AVFilterContext    *filter;
187     struct InputStream *ist;
188     struct FilterGraph *graph;
189     uint8_t            *name;
190 } InputFilter;
191
192 typedef struct OutputFilter {
193     AVFilterContext     *filter;
194     struct OutputStream *ost;
195     struct FilterGraph  *graph;
196     uint8_t             *name;
197
198     /* temporary storage until stream maps are processed */
199     AVFilterInOut       *out_tmp;
200 } OutputFilter;
201
202 typedef struct FilterGraph {
203     int            index;
204     const char    *graph_desc;
205
206     AVFilterGraph *graph;
207
208     InputFilter   **inputs;
209     int          nb_inputs;
210     OutputFilter **outputs;
211     int         nb_outputs;
212 } FilterGraph;
213
214 typedef struct InputStream {
215     int file_index;
216     AVStream *st;
217     int discard;             /* true if stream data should be discarded */
218     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
219     AVCodec *dec;
220     AVFrame *decoded_frame;
221
222     int64_t       start;     /* time when read started */
223     /* predicted dts of the next packet read for this stream or (when there are
224      * several frames in a packet) of the next frame in current packet */
225     int64_t       next_dts;
226     /* dts of the last packet read for this stream */
227     int64_t       dts;
228
229     int64_t       next_pts;  /* synthetic pts for the next decode frame */
230     int64_t       pts;       /* current pts of the decoded frame */
231     double ts_scale;
232     int is_start;            /* is 1 at the start and after a discontinuity */
233     int saw_first_ts;
234     int showed_multi_packet_warning;
235     AVDictionary *opts;
236     AVRational framerate;               /* framerate forced with -r */
237     int top_field_first;
238
239     int resample_height;
240     int resample_width;
241     int resample_pix_fmt;
242
243     int      resample_sample_fmt;
244     int      resample_sample_rate;
245     int      resample_channels;
246     uint64_t resample_channel_layout;
247
248     /* a pool of free buffers for decoded data */
249     FrameBuffer *buffer_pool;
250     int dr1;
251
252     /* decoded data from this stream goes into all those filters
253      * currently video and audio only */
254     InputFilter **filters;
255     int        nb_filters;
256 } InputStream;
257
258 typedef struct InputFile {
259     AVFormatContext *ctx;
260     int eof_reached;      /* true if eof reached */
261     int ist_index;        /* index of first stream in input_streams */
262     int buffer_size;      /* current total buffer size */
263     int64_t ts_offset;
264     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
265                              from ctx.nb_streams if new streams appear during av_read_frame() */
266     int rate_emu;
267
268 #if HAVE_PTHREADS
269     pthread_t thread;           /* thread reading from this file */
270     int finished;               /* the thread has exited */
271     int joined;                 /* the thread has been joined */
272     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
273     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
274     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
275 #endif
276 } InputFile;
277
278 typedef struct OutputStream {
279     int file_index;          /* file index */
280     int index;               /* stream index in the output file */
281     int source_index;        /* InputStream index */
282     AVStream *st;            /* stream in the output file */
283     int encoding_needed;     /* true if encoding needed for this stream */
284     int frame_number;
285     /* input pts and corresponding output pts
286        for A/V sync */
287     struct InputStream *sync_ist; /* input stream to sync against */
288     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
289     /* pts of the first frame encoded for this stream, used for limiting
290      * recording time */
291     int64_t first_pts;
292     AVBitStreamFilterContext *bitstream_filters;
293     AVCodec *enc;
294     int64_t max_frames;
295     AVFrame *filtered_frame;
296
297     /* video only */
298     AVRational frame_rate;
299     int force_fps;
300     int top_field_first;
301
302     float frame_aspect_ratio;
303     float last_quality;
304
305     /* forced key frames */
306     int64_t *forced_kf_pts;
307     int forced_kf_count;
308     int forced_kf_index;
309
310     /* audio only */
311     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
312     int audio_channels_mapped;           /* number of channels in audio_channels_map */
313
314     FILE *logfile;
315
316     OutputFilter *filter;
317     char *avfilter;
318
319     int64_t sws_flags;
320     int64_t swr_dither_method;
321     double swr_dither_scale;
322     AVDictionary *opts;
323     int is_past_recording_time;
324     int stream_copy;
325     const char *attachment_filename;
326     int copy_initial_nonkeyframes;
327
328     int keep_pix_fmt;
329 } OutputStream;
330
331
332 #if HAVE_TERMIOS_H
333
334 /* init terminal so that we can grab keys */
335 static struct termios oldtty;
336 static int restore_tty;
337 #endif
338
339 typedef struct OutputFile {
340     AVFormatContext *ctx;
341     AVDictionary *opts;
342     int ost_index;       /* index of the first stream in output_streams */
343     int64_t recording_time; /* desired length of the resulting file in microseconds */
344     int64_t start_time;     /* start time in microseconds */
345     uint64_t limit_filesize; /* filesize limit expressed in bytes */
346 } OutputFile;
347
348 static InputStream **input_streams = NULL;
349 static int        nb_input_streams = 0;
350 static InputFile   **input_files   = NULL;
351 static int        nb_input_files   = 0;
352
353 static OutputStream **output_streams = NULL;
354 static int         nb_output_streams = 0;
355 static OutputFile   **output_files   = NULL;
356 static int         nb_output_files   = 0;
357
358 static FilterGraph **filtergraphs;
359 int               nb_filtergraphs;
360
361 typedef struct OptionsContext {
362     /* input/output options */
363     int64_t start_time;
364     const char *format;
365
366     SpecifierOpt *codec_names;
367     int        nb_codec_names;
368     SpecifierOpt *audio_channels;
369     int        nb_audio_channels;
370     SpecifierOpt *audio_sample_rate;
371     int        nb_audio_sample_rate;
372     SpecifierOpt *frame_rates;
373     int        nb_frame_rates;
374     SpecifierOpt *frame_sizes;
375     int        nb_frame_sizes;
376     SpecifierOpt *frame_pix_fmts;
377     int        nb_frame_pix_fmts;
378
379     /* input options */
380     int64_t input_ts_offset;
381     int rate_emu;
382
383     SpecifierOpt *ts_scale;
384     int        nb_ts_scale;
385     SpecifierOpt *dump_attachment;
386     int        nb_dump_attachment;
387
388     /* output options */
389     StreamMap *stream_maps;
390     int     nb_stream_maps;
391     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
392     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
393     int metadata_global_manual;
394     int metadata_streams_manual;
395     int metadata_chapters_manual;
396     const char **attachments;
397     int       nb_attachments;
398
399     int chapters_input_file;
400
401     int64_t recording_time;
402     uint64_t limit_filesize;
403     float mux_preload;
404     float mux_max_delay;
405
406     int video_disable;
407     int audio_disable;
408     int subtitle_disable;
409     int data_disable;
410
411     /* indexed by output file stream index */
412     int   *streamid_map;
413     int nb_streamid_map;
414
415     SpecifierOpt *metadata;
416     int        nb_metadata;
417     SpecifierOpt *max_frames;
418     int        nb_max_frames;
419     SpecifierOpt *bitstream_filters;
420     int        nb_bitstream_filters;
421     SpecifierOpt *codec_tags;
422     int        nb_codec_tags;
423     SpecifierOpt *sample_fmts;
424     int        nb_sample_fmts;
425     SpecifierOpt *qscale;
426     int        nb_qscale;
427     SpecifierOpt *forced_key_frames;
428     int        nb_forced_key_frames;
429     SpecifierOpt *force_fps;
430     int        nb_force_fps;
431     SpecifierOpt *frame_aspect_ratios;
432     int        nb_frame_aspect_ratios;
433     SpecifierOpt *rc_overrides;
434     int        nb_rc_overrides;
435     SpecifierOpt *intra_matrices;
436     int        nb_intra_matrices;
437     SpecifierOpt *inter_matrices;
438     int        nb_inter_matrices;
439     SpecifierOpt *top_field_first;
440     int        nb_top_field_first;
441     SpecifierOpt *metadata_map;
442     int        nb_metadata_map;
443     SpecifierOpt *presets;
444     int        nb_presets;
445     SpecifierOpt *copy_initial_nonkeyframes;
446     int        nb_copy_initial_nonkeyframes;
447     SpecifierOpt *filters;
448     int        nb_filters;
449 } OptionsContext;
450
451 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
452
453 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
454 {\
455     int i, ret;\
456     for (i = 0; i < o->nb_ ## name; i++) {\
457         char *spec = o->name[i].specifier;\
458         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
459             outvar = o->name[i].u.type;\
460         else if (ret < 0)\
461             exit_program(1);\
462     }\
463 }
464
465 static int64_t getutime(void)
466 {
467 #if HAVE_GETRUSAGE
468     struct rusage rusage;
469
470     getrusage(RUSAGE_SELF, &rusage);
471     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
472 #elif HAVE_GETPROCESSTIMES
473     HANDLE proc;
474     FILETIME c, e, k, u;
475     proc = GetCurrentProcess();
476     GetProcessTimes(proc, &c, &e, &k, &u);
477     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
478 #else
479     return av_gettime();
480 #endif
481 }
482
483 static void update_benchmark(const char *fmt, ...)
484 {
485     if (do_benchmark_all) {
486         int64_t t = getutime();
487         va_list va;
488         char buf[1024];
489
490         if (fmt) {
491             va_start(va, fmt);
492             vsnprintf(buf, sizeof(buf), fmt, va);
493             va_end(va);
494             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
495         }
496         current_time = t;
497     }
498 }
499
500 static void reset_options(OptionsContext *o, int is_input)
501 {
502     const OptionDef *po = options;
503     OptionsContext bak= *o;
504     int i;
505
506     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
507     while (po->name) {
508         void *dst = (uint8_t*)o + po->u.off;
509
510         if (po->flags & OPT_SPEC) {
511             SpecifierOpt **so = dst;
512             int i, *count = (int*)(so + 1);
513             for (i = 0; i < *count; i++) {
514                 av_freep(&(*so)[i].specifier);
515                 if (po->flags & OPT_STRING)
516                     av_freep(&(*so)[i].u.str);
517             }
518             av_freep(so);
519             *count = 0;
520         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
521             av_freep(dst);
522         po++;
523     }
524
525     for (i = 0; i < o->nb_stream_maps; i++)
526         av_freep(&o->stream_maps[i].linklabel);
527     av_freep(&o->stream_maps);
528     av_freep(&o->audio_channel_maps);
529     av_freep(&o->streamid_map);
530
531     memset(o, 0, sizeof(*o));
532
533     if(is_input) o->recording_time = bak.recording_time;
534     else         o->recording_time = INT64_MAX;
535     o->mux_max_delay  = 0.7;
536     o->limit_filesize = UINT64_MAX;
537     o->chapters_input_file = INT_MAX;
538
539     uninit_opts();
540     init_opts();
541 }
542
543 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
544 {
545     if (codec && codec->pix_fmts) {
546         const enum PixelFormat *p = codec->pix_fmts;
547         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
548         enum PixelFormat best= PIX_FMT_NONE;
549         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
550             if (st->codec->codec_id == CODEC_ID_MJPEG) {
551                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
552             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
553                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
554                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
555             }
556         }
557         for (; *p != PIX_FMT_NONE; p++) {
558             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
559             if (*p == target)
560                 break;
561         }
562         if (*p == PIX_FMT_NONE) {
563             if (target != PIX_FMT_NONE)
564                 av_log(NULL, AV_LOG_WARNING,
565                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
566                        av_pix_fmt_descriptors[target].name,
567                        codec->name,
568                        av_pix_fmt_descriptors[best].name);
569             return best;
570         }
571     }
572     return target;
573 }
574
575 static char *choose_pix_fmts(OutputStream *ost)
576 {
577      if (ost->keep_pix_fmt) {
578         if (ost->filter)
579             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
580                                             AVFILTER_AUTO_CONVERT_NONE);
581         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
582             return NULL;
583         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
584     }
585     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
586         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
587     } else if (ost->enc && ost->enc->pix_fmts) {
588         const enum PixelFormat *p;
589         AVIOContext *s = NULL;
590         uint8_t *ret;
591         int len;
592
593         if (avio_open_dyn_buf(&s) < 0)
594             exit_program(1);
595
596         p = ost->enc->pix_fmts;
597         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
598             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
599                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
600             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
601                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
602                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
603             }
604         }
605
606         for (; *p != PIX_FMT_NONE; p++) {
607             const char *name = av_get_pix_fmt_name(*p);
608             avio_printf(s, "%s:", name);
609         }
610         len = avio_close_dyn_buf(s, &ret);
611         ret[len - 1] = 0;
612         return ret;
613     } else
614         return NULL;
615 }
616
617 /**
618  * Define a function for building a string containing a list of
619  * allowed formats,
620  */
621 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
622 static char *choose_ ## var ## s(OutputStream *ost)                             \
623 {                                                                               \
624     if (ost->st->codec->var != none) {                                          \
625         get_name(ost->st->codec->var);                                          \
626         return av_strdup(name);                                                 \
627     } else if (ost->enc->supported_list) {                                      \
628         const type *p;                                                          \
629         AVIOContext *s = NULL;                                                  \
630         uint8_t *ret;                                                           \
631         int len;                                                                \
632                                                                                 \
633         if (avio_open_dyn_buf(&s) < 0)                                          \
634             exit_program(1);                                                    \
635                                                                                 \
636         for (p = ost->enc->supported_list; *p != none; p++) {                   \
637             get_name(*p);                                                       \
638             avio_printf(s, "%s" separator, name);                               \
639         }                                                                       \
640         len = avio_close_dyn_buf(s, &ret);                                      \
641         ret[len - 1] = 0;                                                       \
642         return ret;                                                             \
643     } else                                                                      \
644         return NULL;                                                            \
645 }
646
647 #define GET_PIX_FMT_NAME(pix_fmt)\
648     const char *name = av_get_pix_fmt_name(pix_fmt);
649
650 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
651 //                   GET_PIX_FMT_NAME, ":")
652
653 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
654     const char *name = av_get_sample_fmt_name(sample_fmt)
655
656 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
657                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
658
659 #define GET_SAMPLE_RATE_NAME(rate)\
660     char name[16];\
661     snprintf(name, sizeof(name), "%d", rate);
662
663 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
664                   GET_SAMPLE_RATE_NAME, ",")
665
666 #define GET_CH_LAYOUT_NAME(ch_layout)\
667     char name[16];\
668     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
669
670 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
671                   GET_CH_LAYOUT_NAME, ",")
672
673 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
674 {
675     FilterGraph *fg = av_mallocz(sizeof(*fg));
676
677     if (!fg)
678         exit_program(1);
679     fg->index = nb_filtergraphs;
680
681     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
682                              fg->nb_outputs + 1);
683     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
684         exit_program(1);
685     fg->outputs[0]->ost   = ost;
686     fg->outputs[0]->graph = fg;
687
688     ost->filter = fg->outputs[0];
689
690     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
691                             fg->nb_inputs + 1);
692     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
693         exit_program(1);
694     fg->inputs[0]->ist   = ist;
695     fg->inputs[0]->graph = fg;
696
697     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
698                               &ist->nb_filters, ist->nb_filters + 1);
699     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
700
701     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
702                               &nb_filtergraphs, nb_filtergraphs + 1);
703     filtergraphs[nb_filtergraphs - 1] = fg;
704
705     return fg;
706 }
707
708 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
709 {
710     InputStream *ist = NULL;
711     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
712     int i;
713
714     // TODO: support other filter types
715     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
716         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
717                "currently.\n");
718         exit_program(1);
719     }
720
721     if (in->name) {
722         AVFormatContext *s;
723         AVStream       *st = NULL;
724         char *p;
725         int file_idx = strtol(in->name, &p, 0);
726
727         if (file_idx < 0 || file_idx >= nb_input_files) {
728             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
729                    file_idx, fg->graph_desc);
730             exit_program(1);
731         }
732         s = input_files[file_idx]->ctx;
733
734         for (i = 0; i < s->nb_streams; i++) {
735             if (s->streams[i]->codec->codec_type != type)
736                 continue;
737             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
738                 st = s->streams[i];
739                 break;
740             }
741         }
742         if (!st) {
743             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
744                    "matches no streams.\n", p, fg->graph_desc);
745             exit_program(1);
746         }
747         ist = input_streams[input_files[file_idx]->ist_index + st->index];
748     } else {
749         /* find the first unused stream of corresponding type */
750         for (i = 0; i < nb_input_streams; i++) {
751             ist = input_streams[i];
752             if (ist->st->codec->codec_type == type && ist->discard)
753                 break;
754         }
755         if (i == nb_input_streams) {
756             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
757                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
758                    in->filter_ctx->name);
759             exit_program(1);
760         }
761     }
762     ist->discard         = 0;
763     ist->decoding_needed = 1;
764     ist->st->discard = AVDISCARD_NONE;
765
766     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
767                             &fg->nb_inputs, fg->nb_inputs + 1);
768     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
769         exit_program(1);
770     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
771     fg->inputs[fg->nb_inputs - 1]->graph = fg;
772
773     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
774                               &ist->nb_filters, ist->nb_filters + 1);
775     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
776 }
777
778 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
779 {
780     char *pix_fmts;
781     OutputStream *ost = ofilter->ost;
782     AVCodecContext *codec = ost->st->codec;
783     AVFilterContext *last_filter = out->filter_ctx;
784     int pad_idx = out->pad_idx;
785     int ret;
786     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
787
788 #if FF_API_OLD_VSINK_API
789     ret = avfilter_graph_create_filter(&ofilter->filter,
790                                        avfilter_get_by_name("buffersink"),
791                                        "ffmpeg_buffersink", NULL, NULL, fg->graph);
792 #else
793     ret = avfilter_graph_create_filter(&ofilter->filter,
794                                        avfilter_get_by_name("buffersink"),
795                                        "ffmpeg_buffersink", NULL, buffersink_params, fg->graph);
796 #endif
797     av_freep(&buffersink_params);
798
799     if (ret < 0)
800         return ret;
801
802     if (codec->width || codec->height) {
803         char args[255];
804         AVFilterContext *filter;
805
806         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
807                  codec->width,
808                  codec->height,
809                  (unsigned)ost->sws_flags);
810         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
811                                                 NULL, args, NULL, fg->graph)) < 0)
812             return ret;
813         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
814             return ret;
815
816         last_filter = filter;
817         pad_idx = 0;
818     }
819
820     if ((pix_fmts = choose_pix_fmts(ost))) {
821         AVFilterContext *filter;
822         if ((ret = avfilter_graph_create_filter(&filter,
823                                                 avfilter_get_by_name("format"),
824                                                 "format", pix_fmts, NULL,
825                                                 fg->graph)) < 0)
826             return ret;
827         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
828             return ret;
829
830         last_filter = filter;
831         pad_idx     = 0;
832         av_freep(&pix_fmts);
833     }
834
835     if (ost->frame_rate.num && 0) {
836         AVFilterContext *fps;
837         char args[255];
838
839         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
840                  ost->frame_rate.den);
841         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
842                                            "fps", args, NULL, fg->graph);
843         if (ret < 0)
844             return ret;
845
846         ret = avfilter_link(last_filter, pad_idx, fps, 0);
847         if (ret < 0)
848             return ret;
849         last_filter = fps;
850         pad_idx = 0;
851     }
852
853     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
854         return ret;
855
856     return 0;
857 }
858
859 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
860 {
861     OutputStream *ost = ofilter->ost;
862     AVCodecContext *codec  = ost->st->codec;
863     AVFilterContext *last_filter = out->filter_ctx;
864     int pad_idx = out->pad_idx;
865     char *sample_fmts, *sample_rates, *channel_layouts;
866     int ret;
867
868     ret = avfilter_graph_create_filter(&ofilter->filter,
869                                        avfilter_get_by_name("abuffersink_old"),
870                                        "ffmpeg_abuffersink_old", NULL, NULL, fg->graph);
871     if (ret < 0)
872         return ret;
873
874 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
875     AVFilterContext *filt_ctx;                                              \
876                                                                             \
877     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
878            "similarly to -af " filter_name "=%s.\n", arg);                  \
879                                                                             \
880     ret = avfilter_graph_create_filter(&filt_ctx,                           \
881                                        avfilter_get_by_name(filter_name),   \
882                                        filter_name, arg, NULL, fg->graph);  \
883     if (ret < 0)                                                            \
884         return ret;                                                         \
885                                                                             \
886     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
887     if (ret < 0)                                                            \
888         return ret;                                                         \
889                                                                             \
890     last_filter = filt_ctx;                                                 \
891     pad_idx = 0;                                                            \
892 } while (0)
893     if (ost->audio_channels_mapped) {
894         int i;
895         AVBPrint pan_buf;
896         av_bprint_init(&pan_buf, 256, 8192);
897         av_bprintf(&pan_buf, "0x%"PRIx64,
898                    av_get_default_channel_layout(ost->audio_channels_mapped));
899         for (i = 0; i < ost->audio_channels_mapped; i++)
900             if (ost->audio_channels_map[i] != -1)
901                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
902
903         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
904         av_bprint_finalize(&pan_buf, NULL);
905     }
906
907     if (codec->channels && !codec->channel_layout)
908         codec->channel_layout = av_get_default_channel_layout(codec->channels);
909
910     sample_fmts     = choose_sample_fmts(ost);
911     sample_rates    = choose_sample_rates(ost);
912     channel_layouts = choose_channel_layouts(ost);
913     if (sample_fmts || sample_rates || channel_layouts) {
914         AVFilterContext *format;
915         char args[256];
916         int len = 0;
917
918         if (sample_fmts)
919             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
920                             sample_fmts);
921         if (sample_rates)
922             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
923                             sample_rates);
924         if (channel_layouts)
925             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
926                             channel_layouts);
927         args[len - 1] = 0;
928
929         av_freep(&sample_fmts);
930         av_freep(&sample_rates);
931         av_freep(&channel_layouts);
932
933         ret = avfilter_graph_create_filter(&format,
934                                            avfilter_get_by_name("aformat"),
935                                            "aformat", args, NULL, fg->graph);
936         if (ret < 0)
937             return ret;
938
939         ret = avfilter_link(last_filter, pad_idx, format, 0);
940         if (ret < 0)
941             return ret;
942
943         last_filter = format;
944         pad_idx = 0;
945     }
946
947     if (audio_sync_method > 0 && 0) {
948         char args[256] = {0};
949
950         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
951         if (audio_sync_method > 1)
952             av_strlcatf(args, sizeof(args), ":max_soft_comp=%d", -audio_sync_method);
953         AUTO_INSERT_FILTER("-async", "aresample", args);
954     }
955
956     if (audio_volume != 256 && 0) {
957         char args[256];
958
959         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
960         AUTO_INSERT_FILTER("-vol", "volume", args);
961     }
962
963     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
964         return ret;
965
966     return 0;
967 }
968
969 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
970 {                                                                  \
971     AVFilterContext *ctx = inout->filter_ctx;                      \
972     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
973     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
974     AVIOContext *pb;                                               \
975                                                                    \
976     if (avio_open_dyn_buf(&pb) < 0)                                \
977         exit_program(1);                                           \
978                                                                    \
979     avio_printf(pb, "%s", ctx->filter->name);                      \
980     if (nb_pads > 1)                                               \
981         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
982     avio_w8(pb, 0);                                                \
983     avio_close_dyn_buf(pb, &f->name);                              \
984 }
985
986 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
987 {
988     av_freep(&ofilter->name);
989     DESCRIBE_FILTER_LINK(ofilter, out, 0);
990
991     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
992     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
993     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
994     default: av_assert0(0);
995     }
996 }
997
998 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
999                                         AVFilterInOut *in)
1000 {
1001     AVFilterContext *first_filter = in->filter_ctx;
1002     AVFilter *filter = avfilter_get_by_name("buffer");
1003     InputStream *ist = ifilter->ist;
1004     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1005                                                       ist->framerate.num} :
1006                                          ist->st->time_base;
1007     AVRational fr = ist->framerate.num ? ist->framerate :
1008                                          ist->st->r_frame_rate;
1009     AVRational sar;
1010     AVBPrint args;
1011     int pad_idx = in->pad_idx;
1012     int ret;
1013
1014     sar = ist->st->sample_aspect_ratio.num ?
1015           ist->st->sample_aspect_ratio :
1016           ist->st->codec->sample_aspect_ratio;
1017     if(!sar.den)
1018         sar = (AVRational){0,1};
1019     av_bprint_init(&args, 0, 1);
1020     av_bprintf(&args,
1021              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1022              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1023              ist->st->codec->height, ist->st->codec->pix_fmt,
1024              tb.num, tb.den, sar.num, sar.den,
1025              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1026     if (fr.num && fr.den)
1027         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1028
1029     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
1030                                             args.str, NULL, fg->graph)) < 0)
1031         return ret;
1032
1033     if (ist->framerate.num) {
1034         AVFilterContext *setpts;
1035
1036         if ((ret = avfilter_graph_create_filter(&setpts,
1037                                                 avfilter_get_by_name("setpts"),
1038                                                 "setpts", "N", NULL,
1039                                                 fg->graph)) < 0)
1040             return ret;
1041
1042         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1043             return ret;
1044
1045         first_filter = setpts;
1046         pad_idx = 0;
1047     }
1048
1049     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1050         return ret;
1051     return 0;
1052 }
1053
1054 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1055                                         AVFilterInOut *in)
1056 {
1057     AVFilterContext *first_filter = in->filter_ctx;
1058     AVFilter *filter = avfilter_get_by_name("abuffer");
1059     InputStream *ist = ifilter->ist;
1060     int pad_idx = in->pad_idx;
1061     char args[255];
1062     int ret;
1063
1064     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1065              ":channel_layout=0x%"PRIx64,
1066              ist->st->time_base.num, ist->st->time_base.den,
1067              ist->st->codec->sample_rate,
1068              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1069              ist->st->codec->channel_layout);
1070
1071     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1072                                             in->name, args, NULL,
1073                                             fg->graph)) < 0)
1074         return ret;
1075
1076 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1077     AVFilterContext *filt_ctx;                                              \
1078                                                                             \
1079     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1080            "similarly to -af " filter_name "=%s.\n", arg);                  \
1081                                                                             \
1082     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1083                                        avfilter_get_by_name(filter_name),   \
1084                                        filter_name, arg, NULL, fg->graph);  \
1085     if (ret < 0)                                                            \
1086         return ret;                                                         \
1087                                                                             \
1088     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1089     if (ret < 0)                                                            \
1090         return ret;                                                         \
1091                                                                             \
1092     first_filter = filt_ctx;                                                  \
1093 } while (0)
1094
1095     if (audio_sync_method > 0) {
1096         char args[256] = {0};
1097
1098         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1099         if (audio_sync_method > 1)
1100             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1101         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1102     }
1103
1104 //     if (ost->audio_channels_mapped) {
1105 //         int i;
1106 //         AVBPrint pan_buf;
1107 //         av_bprint_init(&pan_buf, 256, 8192);
1108 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1109 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1110 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1111 //             if (ost->audio_channels_map[i] != -1)
1112 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1113 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1114 //         av_bprint_finalize(&pan_buf, NULL);
1115 //     }
1116
1117     if (audio_volume != 256) {
1118         char args[256];
1119
1120         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1121         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1122     }
1123     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1124         return ret;
1125
1126     return 0;
1127 }
1128
1129 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1130                                   AVFilterInOut *in)
1131 {
1132     av_freep(&ifilter->name);
1133     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1134
1135     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
1136     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1137     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1138     default: av_assert0(0);
1139     }
1140 }
1141
1142 static int configure_filtergraph(FilterGraph *fg)
1143 {
1144     AVFilterInOut *inputs, *outputs, *cur;
1145     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1146     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1147                                       fg->graph_desc;
1148
1149     avfilter_graph_free(&fg->graph);
1150     if (!(fg->graph = avfilter_graph_alloc()))
1151         return AVERROR(ENOMEM);
1152
1153     if (simple) {
1154         OutputStream *ost = fg->outputs[0]->ost;
1155         char args[255];
1156         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1157         fg->graph->scale_sws_opts = av_strdup(args);
1158     }
1159
1160     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1161         return ret;
1162
1163     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1164         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1165                "exactly one input and output.\n", graph_desc);
1166         return AVERROR(EINVAL);
1167     }
1168
1169     for (cur = inputs; !simple && init && cur; cur = cur->next)
1170         init_input_filter(fg, cur);
1171
1172     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1173         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1174             return ret;
1175     avfilter_inout_free(&inputs);
1176
1177     if (!init || simple) {
1178         /* we already know the mappings between lavfi outputs and output streams,
1179          * so we can finish the setup */
1180         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1181             configure_output_filter(fg, fg->outputs[i], cur);
1182         avfilter_inout_free(&outputs);
1183
1184         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1185             return ret;
1186     } else {
1187         /* wait until output mappings are processed */
1188         for (cur = outputs; cur;) {
1189             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1190                                      &fg->nb_outputs, fg->nb_outputs + 1);
1191             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1192                 exit_program(1);
1193             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1194             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1195             cur = cur->next;
1196             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1197         }
1198     }
1199
1200     return 0;
1201 }
1202
1203 static int configure_complex_filters(void)
1204 {
1205     int i, ret = 0;
1206
1207     for (i = 0; i < nb_filtergraphs; i++)
1208         if (!filtergraphs[i]->graph &&
1209             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1210             return ret;
1211     return 0;
1212 }
1213
1214 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1215 {
1216     int i;
1217     for (i = 0; i < fg->nb_inputs; i++)
1218         if (fg->inputs[i]->ist == ist)
1219             return 1;
1220     return 0;
1221 }
1222
1223 static void term_exit(void)
1224 {
1225     av_log(NULL, AV_LOG_QUIET, "%s", "");
1226 #if HAVE_TERMIOS_H
1227     if(restore_tty)
1228         tcsetattr (0, TCSANOW, &oldtty);
1229 #endif
1230 }
1231
1232 static volatile int received_sigterm = 0;
1233
1234 static void sigterm_handler(int sig)
1235 {
1236     received_sigterm = sig;
1237     received_nb_signals++;
1238     term_exit();
1239     if(received_nb_signals > 3)
1240         exit(123);
1241 }
1242
1243 static void term_init(void)
1244 {
1245 #if HAVE_TERMIOS_H
1246     if(!run_as_daemon){
1247         struct termios tty;
1248         int istty = 1;
1249 #if HAVE_ISATTY
1250         istty = isatty(0) && isatty(2);
1251 #endif
1252         if (istty && tcgetattr (0, &tty) == 0) {
1253             oldtty = tty;
1254             restore_tty = 1;
1255             atexit(term_exit);
1256
1257             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1258                              |INLCR|IGNCR|ICRNL|IXON);
1259             tty.c_oflag |= OPOST;
1260             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1261             tty.c_cflag &= ~(CSIZE|PARENB);
1262             tty.c_cflag |= CS8;
1263             tty.c_cc[VMIN] = 1;
1264             tty.c_cc[VTIME] = 0;
1265
1266             tcsetattr (0, TCSANOW, &tty);
1267         }
1268         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1269     }
1270 #endif
1271     avformat_network_deinit();
1272
1273     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1274     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1275 #ifdef SIGXCPU
1276     signal(SIGXCPU, sigterm_handler);
1277 #endif
1278 }
1279
1280 /* read a key without blocking */
1281 static int read_key(void)
1282 {
1283     unsigned char ch;
1284 #if HAVE_TERMIOS_H
1285     int n = 1;
1286     struct timeval tv;
1287     fd_set rfds;
1288
1289     FD_ZERO(&rfds);
1290     FD_SET(0, &rfds);
1291     tv.tv_sec = 0;
1292     tv.tv_usec = 0;
1293     n = select(1, &rfds, NULL, NULL, &tv);
1294     if (n > 0) {
1295         n = read(0, &ch, 1);
1296         if (n == 1)
1297             return ch;
1298
1299         return n;
1300     }
1301 #elif HAVE_KBHIT
1302 #    if HAVE_PEEKNAMEDPIPE
1303     static int is_pipe;
1304     static HANDLE input_handle;
1305     DWORD dw, nchars;
1306     if(!input_handle){
1307         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1308         is_pipe = !GetConsoleMode(input_handle, &dw);
1309     }
1310
1311     if (stdin->_cnt > 0) {
1312         read(0, &ch, 1);
1313         return ch;
1314     }
1315     if (is_pipe) {
1316         /* When running under a GUI, you will end here. */
1317         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1318             return -1;
1319         //Read it
1320         if(nchars != 0) {
1321             read(0, &ch, 1);
1322             return ch;
1323         }else{
1324             return -1;
1325         }
1326     }
1327 #    endif
1328     if(kbhit())
1329         return(getch());
1330 #endif
1331     return -1;
1332 }
1333
1334 static int decode_interrupt_cb(void *ctx)
1335 {
1336     return received_nb_signals > 1;
1337 }
1338
1339 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1340
1341 void av_noreturn exit_program(int ret)
1342 {
1343     int i, j;
1344
1345     for (i = 0; i < nb_filtergraphs; i++) {
1346         avfilter_graph_free(&filtergraphs[i]->graph);
1347         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1348             av_freep(&filtergraphs[i]->inputs[j]->name);
1349             av_freep(&filtergraphs[i]->inputs[j]);
1350         }
1351         av_freep(&filtergraphs[i]->inputs);
1352         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1353             av_freep(&filtergraphs[i]->outputs[j]->name);
1354             av_freep(&filtergraphs[i]->outputs[j]);
1355         }
1356         av_freep(&filtergraphs[i]->outputs);
1357         av_freep(&filtergraphs[i]);
1358     }
1359     av_freep(&filtergraphs);
1360
1361     /* close files */
1362     for (i = 0; i < nb_output_files; i++) {
1363         AVFormatContext *s = output_files[i]->ctx;
1364         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1365             avio_close(s->pb);
1366         avformat_free_context(s);
1367         av_dict_free(&output_files[i]->opts);
1368         av_freep(&output_files[i]);
1369     }
1370     for (i = 0; i < nb_output_streams; i++) {
1371         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1372         while (bsfc) {
1373             AVBitStreamFilterContext *next = bsfc->next;
1374             av_bitstream_filter_close(bsfc);
1375             bsfc = next;
1376         }
1377         output_streams[i]->bitstream_filters = NULL;
1378
1379         av_freep(&output_streams[i]->filtered_frame);
1380         av_freep(&output_streams[i]->avfilter);
1381         av_freep(&output_streams[i]);
1382     }
1383     for (i = 0; i < nb_input_files; i++) {
1384         avformat_close_input(&input_files[i]->ctx);
1385         av_freep(&input_files[i]);
1386     }
1387     for (i = 0; i < nb_input_streams; i++) {
1388         av_freep(&input_streams[i]->decoded_frame);
1389         av_dict_free(&input_streams[i]->opts);
1390         free_buffer_pool(&input_streams[i]->buffer_pool);
1391         av_freep(&input_streams[i]->filters);
1392         av_freep(&input_streams[i]);
1393     }
1394
1395     if (vstats_file)
1396         fclose(vstats_file);
1397     av_free(vstats_filename);
1398
1399     av_freep(&input_streams);
1400     av_freep(&input_files);
1401     av_freep(&output_streams);
1402     av_freep(&output_files);
1403
1404     uninit_opts();
1405
1406     avfilter_uninit();
1407     avformat_network_deinit();
1408
1409     if (received_sigterm) {
1410         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1411                (int) received_sigterm);
1412         exit (255);
1413     }
1414
1415     exit(ret);
1416 }
1417
1418 static void assert_avoptions(AVDictionary *m)
1419 {
1420     AVDictionaryEntry *t;
1421     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1422         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1423         exit_program(1);
1424     }
1425 }
1426
1427 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1428 {
1429     const char *codec_string = encoder ? "encoder" : "decoder";
1430     AVCodec *codec;
1431     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1432         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1433         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1434                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1435                 codec_string, c->codec->name);
1436         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1437         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1438             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1439                    codec_string, codec->name);
1440         exit_program(1);
1441     }
1442 }
1443
1444 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1445 {
1446     if (codec && codec->sample_fmts) {
1447         const enum AVSampleFormat *p = codec->sample_fmts;
1448         for (; *p != -1; p++) {
1449             if (*p == st->codec->sample_fmt)
1450                 break;
1451         }
1452         if (*p == -1) {
1453             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1454                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1455             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1456             av_log(NULL, AV_LOG_WARNING,
1457                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1458                    av_get_sample_fmt_name(st->codec->sample_fmt),
1459                    codec->name,
1460                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1461             st->codec->sample_fmt = codec->sample_fmts[0];
1462         }
1463     }
1464 }
1465
1466 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1467 {
1468     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1469     AVCodecContext          *avctx = ost->st->codec;
1470     int ret;
1471
1472     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1473         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1474         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1475
1476     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1477         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1478         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1479             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1480             pkt->pts = pkt->dts = max;
1481         }
1482     }
1483
1484     /*
1485      * Audio encoders may split the packets --  #frames in != #packets out.
1486      * But there is no reordering, so we can limit the number of output packets
1487      * by simply dropping them here.
1488      * Counting encoded video frames needs to be done separately because of
1489      * reordering, see do_video_out()
1490      */
1491     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1492         if (ost->frame_number >= ost->max_frames) {
1493             av_free_packet(pkt);
1494             return;
1495         }
1496         ost->frame_number++;
1497     }
1498
1499     while (bsfc) {
1500         AVPacket new_pkt = *pkt;
1501         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1502                                            &new_pkt.data, &new_pkt.size,
1503                                            pkt->data, pkt->size,
1504                                            pkt->flags & AV_PKT_FLAG_KEY);
1505         if (a > 0) {
1506             av_free_packet(pkt);
1507             new_pkt.destruct = av_destruct_packet;
1508         } else if (a < 0) {
1509             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1510                    bsfc->filter->name, pkt->stream_index,
1511                    avctx->codec ? avctx->codec->name : "copy");
1512             print_error("", a);
1513             if (exit_on_error)
1514                 exit_program(1);
1515         }
1516         *pkt = new_pkt;
1517
1518         bsfc = bsfc->next;
1519     }
1520
1521     pkt->stream_index = ost->index;
1522     ret = av_interleaved_write_frame(s, pkt);
1523     if (ret < 0) {
1524         print_error("av_interleaved_write_frame()", ret);
1525         exit_program(1);
1526     }
1527 }
1528
1529 static int check_recording_time(OutputStream *ost)
1530 {
1531     OutputFile *of = output_files[ost->file_index];
1532
1533     if (of->recording_time != INT64_MAX &&
1534         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1535                       AV_TIME_BASE_Q) >= 0) {
1536         ost->is_past_recording_time = 1;
1537         return 0;
1538     }
1539     return 1;
1540 }
1541
1542 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1543                          AVFrame *frame)
1544 {
1545     AVCodecContext *enc = ost->st->codec;
1546     AVPacket pkt;
1547     int got_packet = 0;
1548
1549     av_init_packet(&pkt);
1550     pkt.data = NULL;
1551     pkt.size = 0;
1552 #if 0
1553     if (!check_recording_time(ost))
1554         return;
1555 #endif
1556     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1557         frame->pts = ost->sync_opts;
1558     ost->sync_opts = frame->pts + frame->nb_samples;
1559
1560     av_assert0(pkt.size || !pkt.data);
1561     update_benchmark(NULL);
1562     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1563         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1564         exit_program(1);
1565     }
1566     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1567
1568     if (got_packet) {
1569         if (pkt.pts != AV_NOPTS_VALUE)
1570             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1571         if (pkt.dts != AV_NOPTS_VALUE)
1572             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1573         if (pkt.duration > 0)
1574             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1575
1576         if (debug_ts) {
1577             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1578                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1579                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1580                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1581         }
1582
1583         write_frame(s, &pkt, ost);
1584
1585         audio_size += pkt.size;
1586         av_free_packet(&pkt);
1587     }
1588 }
1589
1590 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1591 {
1592     AVCodecContext *dec;
1593     AVPicture *picture2;
1594     AVPicture picture_tmp;
1595     uint8_t *buf = 0;
1596
1597     dec = ist->st->codec;
1598
1599     /* deinterlace : must be done before any resize */
1600     if (do_deinterlace) {
1601         int size;
1602
1603         /* create temporary picture */
1604         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1605         buf  = av_malloc(size);
1606         if (!buf)
1607             return;
1608
1609         picture2 = &picture_tmp;
1610         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1611
1612         if (avpicture_deinterlace(picture2, picture,
1613                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1614             /* if error, do not deinterlace */
1615             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1616             av_free(buf);
1617             buf = NULL;
1618             picture2 = picture;
1619         }
1620     } else {
1621         picture2 = picture;
1622     }
1623
1624     if (picture != picture2)
1625         *picture = *picture2;
1626     *bufp = buf;
1627 }
1628
1629 static void do_subtitle_out(AVFormatContext *s,
1630                             OutputStream *ost,
1631                             InputStream *ist,
1632                             AVSubtitle *sub,
1633                             int64_t pts)
1634 {
1635     static uint8_t *subtitle_out = NULL;
1636     int subtitle_out_max_size = 1024 * 1024;
1637     int subtitle_out_size, nb, i;
1638     AVCodecContext *enc;
1639     AVPacket pkt;
1640
1641     if (pts == AV_NOPTS_VALUE) {
1642         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1643         if (exit_on_error)
1644             exit_program(1);
1645         return;
1646     }
1647
1648     enc = ost->st->codec;
1649
1650     if (!subtitle_out) {
1651         subtitle_out = av_malloc(subtitle_out_max_size);
1652     }
1653
1654     /* Note: DVB subtitle need one packet to draw them and one other
1655        packet to clear them */
1656     /* XXX: signal it in the codec context ? */
1657     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1658         nb = 2;
1659     else
1660         nb = 1;
1661
1662     for (i = 0; i < nb; i++) {
1663         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1664
1665         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1666         // start_display_time is required to be 0
1667         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1668         sub->end_display_time  -= sub->start_display_time;
1669         sub->start_display_time = 0;
1670         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1671                                                     subtitle_out_max_size, sub);
1672         if (subtitle_out_size < 0) {
1673             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1674             exit_program(1);
1675         }
1676
1677         av_init_packet(&pkt);
1678         pkt.data = subtitle_out;
1679         pkt.size = subtitle_out_size;
1680         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1681         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1682         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1683             /* XXX: the pts correction is handled here. Maybe handling
1684                it in the codec would be better */
1685             if (i == 0)
1686                 pkt.pts += 90 * sub->start_display_time;
1687             else
1688                 pkt.pts += 90 * sub->end_display_time;
1689         }
1690         write_frame(s, &pkt, ost);
1691     }
1692 }
1693
1694 static void do_video_out(AVFormatContext *s,
1695                          OutputStream *ost,
1696                          AVFrame *in_picture,
1697                          float quality)
1698 {
1699     int ret, format_video_sync;
1700     AVPacket pkt;
1701     AVCodecContext *enc = ost->st->codec;
1702     int nb_frames;
1703     double sync_ipts, delta;
1704     double duration = 0;
1705     int frame_size = 0;
1706     InputStream *ist = NULL;
1707
1708     if (ost->source_index >= 0)
1709         ist = input_streams[ost->source_index];
1710
1711     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1712         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1713
1714     sync_ipts = in_picture->pts;
1715     delta = sync_ipts - ost->sync_opts + duration;
1716
1717     /* by default, we output a single frame */
1718     nb_frames = 1;
1719
1720     format_video_sync = video_sync_method;
1721     if (format_video_sync == VSYNC_AUTO)
1722         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1723
1724     switch (format_video_sync) {
1725     case VSYNC_CFR:
1726         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1727         if (delta < -1.1)
1728             nb_frames = 0;
1729         else if (delta > 1.1)
1730             nb_frames = lrintf(delta);
1731         break;
1732     case VSYNC_VFR:
1733         if (delta <= -0.6)
1734             nb_frames = 0;
1735         else if (delta > 0.6)
1736             ost->sync_opts = lrint(sync_ipts);
1737         break;
1738     case VSYNC_DROP:
1739     case VSYNC_PASSTHROUGH:
1740         ost->sync_opts = lrint(sync_ipts);
1741         break;
1742     default:
1743         av_assert0(0);
1744     }
1745
1746     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1747     if (nb_frames == 0) {
1748         nb_frames_drop++;
1749         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1750         return;
1751     } else if (nb_frames > 1) {
1752         nb_frames_dup += nb_frames - 1;
1753         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1754     }
1755
1756
1757 duplicate_frame:
1758     av_init_packet(&pkt);
1759     pkt.data = NULL;
1760     pkt.size = 0;
1761
1762     in_picture->pts = ost->sync_opts;
1763
1764     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1765         enc->codec->id == CODEC_ID_RAWVIDEO) {
1766         /* raw pictures are written as AVPicture structure to
1767            avoid any copies. We support temporarily the older
1768            method. */
1769         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1770         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1771         pkt.data   = (uint8_t *)in_picture;
1772         pkt.size   =  sizeof(AVPicture);
1773         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1774         pkt.flags |= AV_PKT_FLAG_KEY;
1775
1776         write_frame(s, &pkt, ost);
1777         video_size += pkt.size;
1778     } else {
1779         int got_packet;
1780         AVFrame big_picture;
1781
1782         big_picture = *in_picture;
1783         /* better than nothing: use input picture interlaced
1784            settings */
1785         big_picture.interlaced_frame = in_picture->interlaced_frame;
1786         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1787             if (ost->top_field_first == -1)
1788                 big_picture.top_field_first = in_picture->top_field_first;
1789             else
1790                 big_picture.top_field_first = !!ost->top_field_first;
1791         }
1792
1793         /* handles same_quant here. This is not correct because it may
1794            not be a global option */
1795         big_picture.quality = quality;
1796         if (!enc->me_threshold)
1797             big_picture.pict_type = 0;
1798         if (ost->forced_kf_index < ost->forced_kf_count &&
1799             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1800             big_picture.pict_type = AV_PICTURE_TYPE_I;
1801             ost->forced_kf_index++;
1802         }
1803         update_benchmark(NULL);
1804         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1805         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1806         if (ret < 0) {
1807             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1808             exit_program(1);
1809         }
1810
1811         if (got_packet) {
1812             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1813                 pkt.pts = ost->sync_opts;
1814
1815             if (pkt.pts != AV_NOPTS_VALUE)
1816                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1817             if (pkt.dts != AV_NOPTS_VALUE)
1818                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1819
1820             if (debug_ts) {
1821                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1822                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1823                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1824                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1825             }
1826
1827             write_frame(s, &pkt, ost);
1828             frame_size = pkt.size;
1829             video_size += pkt.size;
1830             av_free_packet(&pkt);
1831
1832             /* if two pass, output log */
1833             if (ost->logfile && enc->stats_out) {
1834                 fprintf(ost->logfile, "%s", enc->stats_out);
1835             }
1836         }
1837     }
1838     ost->sync_opts++;
1839     /*
1840      * For video, number of frames in == number of packets out.
1841      * But there may be reordering, so we can't throw away frames on encoder
1842      * flush, we need to limit them here, before they go into encoder.
1843      */
1844     ost->frame_number++;
1845
1846     if(--nb_frames)
1847         goto duplicate_frame;
1848
1849     if (vstats_filename && frame_size)
1850         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1851 }
1852
1853 static double psnr(double d)
1854 {
1855     return -10.0 * log(d) / log(10.0);
1856 }
1857
1858 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1859                            int frame_size)
1860 {
1861     AVCodecContext *enc;
1862     int frame_number;
1863     double ti1, bitrate, avg_bitrate;
1864
1865     /* this is executed just the first time do_video_stats is called */
1866     if (!vstats_file) {
1867         vstats_file = fopen(vstats_filename, "w");
1868         if (!vstats_file) {
1869             perror("fopen");
1870             exit_program(1);
1871         }
1872     }
1873
1874     enc = ost->st->codec;
1875     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1876         frame_number = ost->frame_number;
1877         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1878         if (enc->flags&CODEC_FLAG_PSNR)
1879             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1880
1881         fprintf(vstats_file,"f_size= %6d ", frame_size);
1882         /* compute pts value */
1883         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1884         if (ti1 < 0.01)
1885             ti1 = 0.01;
1886
1887         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1888         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1889         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1890                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1891         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1892     }
1893 }
1894
1895 /* check for new output on any of the filtergraphs */
1896 static int poll_filters(void)
1897 {
1898     AVFilterBufferRef *picref;
1899     AVFrame *filtered_frame = NULL;
1900     int i, ret, ret_all;
1901     unsigned nb_success, nb_eof;
1902     int64_t frame_pts;
1903
1904     while (1) {
1905         /* Reap all buffers present in the buffer sinks */
1906         for (i = 0; i < nb_output_streams; i++) {
1907             OutputStream *ost = output_streams[i];
1908             OutputFile    *of = output_files[ost->file_index];
1909             int ret = 0;
1910
1911             if (!ost->filter)
1912                 continue;
1913
1914             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1915                 return AVERROR(ENOMEM);
1916             } else
1917                 avcodec_get_frame_defaults(ost->filtered_frame);
1918             filtered_frame = ost->filtered_frame;
1919
1920             while (!ost->is_past_recording_time) {
1921                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1922                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1923                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1924                                                     ost->st->codec->frame_size);
1925                 else
1926 #ifdef SINKA
1927                     ret = av_buffersink_read(ost->filter->filter, &picref);
1928 #else
1929                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1930                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1931 #endif
1932                 if (ret < 0) {
1933                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1934                         char buf[256];
1935                         av_strerror(ret, buf, sizeof(buf));
1936                         av_log(NULL, AV_LOG_WARNING,
1937                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1938                     }
1939                     break;
1940                 }
1941                 frame_pts = AV_NOPTS_VALUE;
1942                 if (picref->pts != AV_NOPTS_VALUE) {
1943                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1944                                                     ost->filter->filter->inputs[0]->time_base,
1945                                                     ost->st->codec->time_base) -
1946                                         av_rescale_q(of->start_time,
1947                                                     AV_TIME_BASE_Q,
1948                                                     ost->st->codec->time_base);
1949
1950                     if (of->start_time && filtered_frame->pts < 0) {
1951                         avfilter_unref_buffer(picref);
1952                         continue;
1953                     }
1954                 }
1955                 //if (ost->source_index >= 0)
1956                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1957
1958
1959                 switch (ost->filter->filter->inputs[0]->type) {
1960                 case AVMEDIA_TYPE_VIDEO:
1961                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1962                     filtered_frame->pts = frame_pts;
1963                     if (!ost->frame_aspect_ratio)
1964                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1965
1966                     do_video_out(of->ctx, ost, filtered_frame,
1967                                  same_quant ? ost->last_quality :
1968                                               ost->st->codec->global_quality);
1969                     break;
1970                 case AVMEDIA_TYPE_AUDIO:
1971                     avfilter_copy_buf_props(filtered_frame, picref);
1972                     filtered_frame->pts = frame_pts;
1973                     do_audio_out(of->ctx, ost, filtered_frame);
1974                     break;
1975                 default:
1976                     // TODO support subtitle filters
1977                     av_assert0(0);
1978                 }
1979
1980                 avfilter_unref_buffer(picref);
1981             }
1982         }
1983         /* Request frames through all the graphs */
1984         ret_all = nb_success = nb_eof = 0;
1985         for (i = 0; i < nb_filtergraphs; i++) {
1986             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1987             if (!ret) {
1988                 nb_success++;
1989             } else if (ret == AVERROR_EOF) {
1990                 nb_eof++;
1991             } else if (ret != AVERROR(EAGAIN)) {
1992                 char buf[256];
1993                 av_strerror(ret, buf, sizeof(buf));
1994                 av_log(NULL, AV_LOG_WARNING,
1995                        "Error in request_frame(): %s\n", buf);
1996                 ret_all = ret;
1997             }
1998         }
1999         if (!nb_success)
2000             break;
2001         /* Try again if anything succeeded */
2002     }
2003     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2004 }
2005
2006 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2007 {
2008     char buf[1024];
2009     OutputStream *ost;
2010     AVFormatContext *oc;
2011     int64_t total_size;
2012     AVCodecContext *enc;
2013     int frame_number, vid, i;
2014     double bitrate;
2015     int64_t pts = INT64_MAX;
2016     static int64_t last_time = -1;
2017     static int qp_histogram[52];
2018     int hours, mins, secs, us;
2019
2020     if (!print_stats && !is_last_report)
2021         return;
2022
2023     if (!is_last_report) {
2024         if (last_time == -1) {
2025             last_time = cur_time;
2026             return;
2027         }
2028         if ((cur_time - last_time) < 500000)
2029             return;
2030         last_time = cur_time;
2031     }
2032
2033
2034     oc = output_files[0]->ctx;
2035
2036     total_size = avio_size(oc->pb);
2037     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2038         total_size = avio_tell(oc->pb);
2039         if (total_size < 0)
2040             total_size = 0;
2041     }
2042
2043     buf[0] = '\0';
2044     vid = 0;
2045     for (i = 0; i < nb_output_streams; i++) {
2046         float q = -1;
2047         ost = output_streams[i];
2048         enc = ost->st->codec;
2049         if (!ost->stream_copy && enc->coded_frame)
2050             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2051         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2052             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2053         }
2054         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2055             float fps, t = (cur_time-timer_start) / 1000000.0;
2056
2057             frame_number = ost->frame_number;
2058             fps = t > 1 ? frame_number / t : 0;
2059             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2060                      frame_number, fps < 9.95, fps, q);
2061             if (is_last_report)
2062                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2063             if (qp_hist) {
2064                 int j;
2065                 int qp = lrintf(q);
2066                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2067                     qp_histogram[qp]++;
2068                 for (j = 0; j < 32; j++)
2069                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2070             }
2071             if (enc->flags&CODEC_FLAG_PSNR) {
2072                 int j;
2073                 double error, error_sum = 0;
2074                 double scale, scale_sum = 0;
2075                 char type[3] = { 'Y','U','V' };
2076                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2077                 for (j = 0; j < 3; j++) {
2078                     if (is_last_report) {
2079                         error = enc->error[j];
2080                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2081                     } else {
2082                         error = enc->coded_frame->error[j];
2083                         scale = enc->width * enc->height * 255.0 * 255.0;
2084                     }
2085                     if (j)
2086                         scale /= 4;
2087                     error_sum += error;
2088                     scale_sum += scale;
2089                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2090                 }
2091                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2092             }
2093             vid = 1;
2094         }
2095         /* compute min output value */
2096         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2097                                       ost->st->time_base, AV_TIME_BASE_Q));
2098     }
2099
2100     secs = pts / AV_TIME_BASE;
2101     us = pts % AV_TIME_BASE;
2102     mins = secs / 60;
2103     secs %= 60;
2104     hours = mins / 60;
2105     mins %= 60;
2106
2107     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2108
2109     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2110              "size=%8.0fkB time=", total_size / 1024.0);
2111     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2112              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2113              (100 * us) / AV_TIME_BASE);
2114     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2115              "bitrate=%6.1fkbits/s", bitrate);
2116
2117     if (nb_frames_dup || nb_frames_drop)
2118         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2119                 nb_frames_dup, nb_frames_drop);
2120
2121     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2122
2123     fflush(stderr);
2124
2125     if (is_last_report) {
2126         int64_t raw= audio_size + video_size + extra_size;
2127         av_log(NULL, AV_LOG_INFO, "\n");
2128         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2129                video_size / 1024.0,
2130                audio_size / 1024.0,
2131                extra_size / 1024.0,
2132                100.0 * (total_size - raw) / raw
2133         );
2134         if(video_size + audio_size + extra_size == 0){
2135             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2136         }
2137     }
2138 }
2139
2140 static void flush_encoders(void)
2141 {
2142     int i, ret;
2143
2144     for (i = 0; i < nb_output_streams; i++) {
2145         OutputStream   *ost = output_streams[i];
2146         AVCodecContext *enc = ost->st->codec;
2147         AVFormatContext *os = output_files[ost->file_index]->ctx;
2148         int stop_encoding = 0;
2149
2150         if (!ost->encoding_needed)
2151             continue;
2152
2153         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2154             continue;
2155         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2156             continue;
2157
2158         for (;;) {
2159             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2160             const char *desc;
2161             int64_t *size;
2162
2163             switch (ost->st->codec->codec_type) {
2164             case AVMEDIA_TYPE_AUDIO:
2165                 encode = avcodec_encode_audio2;
2166                 desc   = "Audio";
2167                 size   = &audio_size;
2168                 break;
2169             case AVMEDIA_TYPE_VIDEO:
2170                 encode = avcodec_encode_video2;
2171                 desc   = "Video";
2172                 size   = &video_size;
2173                 break;
2174             default:
2175                 stop_encoding = 1;
2176             }
2177
2178             if (encode) {
2179                 AVPacket pkt;
2180                 int got_packet;
2181                 av_init_packet(&pkt);
2182                 pkt.data = NULL;
2183                 pkt.size = 0;
2184
2185                 update_benchmark(NULL);
2186                 ret = encode(enc, &pkt, NULL, &got_packet);
2187                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2188                 if (ret < 0) {
2189                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2190                     exit_program(1);
2191                 }
2192                 *size += pkt.size;
2193                 if (ost->logfile && enc->stats_out) {
2194                     fprintf(ost->logfile, "%s", enc->stats_out);
2195                 }
2196                 if (!got_packet) {
2197                     stop_encoding = 1;
2198                     break;
2199                 }
2200                 if (pkt.pts != AV_NOPTS_VALUE)
2201                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2202                 if (pkt.dts != AV_NOPTS_VALUE)
2203                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2204                 write_frame(os, &pkt, ost);
2205             }
2206
2207             if (stop_encoding)
2208                 break;
2209         }
2210     }
2211 }
2212
2213 /*
2214  * Check whether a packet from ist should be written into ost at this time
2215  */
2216 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2217 {
2218     OutputFile *of = output_files[ost->file_index];
2219     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2220
2221     if (ost->source_index != ist_index)
2222         return 0;
2223
2224     if (of->start_time && ist->pts < of->start_time)
2225         return 0;
2226
2227     if (of->recording_time != INT64_MAX &&
2228         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2229                       (AVRational){ 1, 1000000 }) >= 0) {
2230         ost->is_past_recording_time = 1;
2231         return 0;
2232     }
2233
2234     return 1;
2235 }
2236
2237 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2238 {
2239     OutputFile *of = output_files[ost->file_index];
2240     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2241     AVPicture pict;
2242     AVPacket opkt;
2243
2244     av_init_packet(&opkt);
2245
2246     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2247         !ost->copy_initial_nonkeyframes)
2248         return;
2249
2250     /* force the input stream PTS */
2251     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2252         audio_size += pkt->size;
2253     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2254         video_size += pkt->size;
2255         ost->sync_opts++;
2256     }
2257
2258     if (pkt->pts != AV_NOPTS_VALUE)
2259         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2260     else
2261         opkt.pts = AV_NOPTS_VALUE;
2262
2263     if (pkt->dts == AV_NOPTS_VALUE)
2264         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2265     else
2266         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2267     opkt.dts -= ost_tb_start_time;
2268
2269     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2270     opkt.flags    = pkt->flags;
2271
2272     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2273     if (  ost->st->codec->codec_id != CODEC_ID_H264
2274        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2275        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2276        && ost->st->codec->codec_id != CODEC_ID_VC1
2277        ) {
2278         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2279             opkt.destruct = av_destruct_packet;
2280     } else {
2281         opkt.data = pkt->data;
2282         opkt.size = pkt->size;
2283     }
2284     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2285         /* store AVPicture in AVPacket, as expected by the output format */
2286         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2287         opkt.data = (uint8_t *)&pict;
2288         opkt.size = sizeof(AVPicture);
2289         opkt.flags |= AV_PKT_FLAG_KEY;
2290     }
2291
2292     write_frame(of->ctx, &opkt, ost);
2293     ost->st->codec->frame_number++;
2294     av_free_packet(&opkt);
2295 }
2296
2297 static void rate_emu_sleep(InputStream *ist)
2298 {
2299     if (input_files[ist->file_index]->rate_emu) {
2300         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2301         int64_t now = av_gettime() - ist->start;
2302         if (pts > now)
2303             usleep(pts - now);
2304     }
2305 }
2306
2307 static int guess_input_channel_layout(InputStream *ist)
2308 {
2309     AVCodecContext *dec = ist->st->codec;
2310
2311     if (!dec->channel_layout) {
2312         char layout_name[256];
2313
2314         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2315         if (!dec->channel_layout)
2316             return 0;
2317         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2318                                      dec->channels, dec->channel_layout);
2319         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2320                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2321     }
2322     return 1;
2323 }
2324
2325 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2326 {
2327     AVFrame *decoded_frame;
2328     AVCodecContext *avctx = ist->st->codec;
2329     int i, ret, resample_changed;
2330
2331     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2332         return AVERROR(ENOMEM);
2333     else
2334         avcodec_get_frame_defaults(ist->decoded_frame);
2335     decoded_frame = ist->decoded_frame;
2336
2337     update_benchmark(NULL);
2338     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2339     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2340     if (ret < 0) {
2341         return ret;
2342     }
2343     if (avctx->sample_rate <= 0) {
2344         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2345         return AVERROR_INVALIDDATA;
2346     }
2347
2348     if (!*got_output) {
2349         /* no audio frame */
2350         if (!pkt->size)
2351             for (i = 0; i < ist->nb_filters; i++)
2352                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2353                                      AV_BUFFERSRC_FLAG_NO_COPY);
2354         return ret;
2355     }
2356
2357     /* if the decoder provides a pts, use it instead of the last packet pts.
2358        the decoder could be delaying output by a packet or more. */
2359     if (decoded_frame->pts != AV_NOPTS_VALUE)
2360         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2361     else if (pkt->pts != AV_NOPTS_VALUE) {
2362         decoded_frame->pts = pkt->pts;
2363         pkt->pts           = AV_NOPTS_VALUE;
2364     }else
2365         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2366
2367
2368 #if 1
2369     /* increment next_dts to use for the case where the input stream does not
2370        have timestamps or there are multiple frames in the packet */
2371     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2372                      avctx->sample_rate;
2373     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2374                      avctx->sample_rate;
2375 #endif
2376
2377     rate_emu_sleep(ist);
2378
2379     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2380                        ist->resample_channels       != avctx->channels               ||
2381                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2382                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2383     if (resample_changed) {
2384         char layout1[64], layout2[64];
2385
2386         if (!guess_input_channel_layout(ist)) {
2387             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2388                    "layout for Input Stream #%d.%d\n", ist->file_index,
2389                    ist->st->index);
2390             exit_program(1);
2391         }
2392         decoded_frame->channel_layout = avctx->channel_layout;
2393
2394         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2395                                      ist->resample_channel_layout);
2396         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2397                                      decoded_frame->channel_layout);
2398
2399         av_log(NULL, AV_LOG_INFO,
2400                "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",
2401                ist->file_index, ist->st->index,
2402                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2403                ist->resample_channels, layout1,
2404                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2405                avctx->channels, layout2);
2406
2407         ist->resample_sample_fmt     = decoded_frame->format;
2408         ist->resample_sample_rate    = decoded_frame->sample_rate;
2409         ist->resample_channel_layout = decoded_frame->channel_layout;
2410         ist->resample_channels       = avctx->channels;
2411
2412         for (i = 0; i < nb_filtergraphs; i++)
2413             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2414                 configure_filtergraph(filtergraphs[i]) < 0) {
2415                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2416                 exit_program(1);
2417             }
2418     }
2419
2420     for (i = 0; i < ist->nb_filters; i++)
2421         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2422
2423     return ret;
2424 }
2425
2426 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2427 {
2428     AVFrame *decoded_frame;
2429     void *buffer_to_free = NULL;
2430     int i, ret = 0, resample_changed;
2431     int64_t best_effort_timestamp;
2432     AVRational *frame_sample_aspect;
2433     float quality;
2434
2435     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2436         return AVERROR(ENOMEM);
2437     else
2438         avcodec_get_frame_defaults(ist->decoded_frame);
2439     decoded_frame = ist->decoded_frame;
2440     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2441
2442     update_benchmark(NULL);
2443     ret = avcodec_decode_video2(ist->st->codec,
2444                                 decoded_frame, got_output, pkt);
2445     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2446     if (ret < 0)
2447         return ret;
2448
2449     quality = same_quant ? decoded_frame->quality : 0;
2450     if (!*got_output) {
2451         /* no picture yet */
2452         if (!pkt->size)
2453             for (i = 0; i < ist->nb_filters; i++)
2454                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2455         return ret;
2456     }
2457
2458     if(ist->top_field_first>=0)
2459         decoded_frame->top_field_first = ist->top_field_first;
2460
2461     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2462     if(best_effort_timestamp != AV_NOPTS_VALUE)
2463         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2464
2465     pkt->size = 0;
2466     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2467
2468     rate_emu_sleep(ist);
2469
2470     if (ist->st->sample_aspect_ratio.num)
2471         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2472
2473     resample_changed = ist->resample_width   != decoded_frame->width  ||
2474                        ist->resample_height  != decoded_frame->height ||
2475                        ist->resample_pix_fmt != decoded_frame->format;
2476     if (resample_changed) {
2477         av_log(NULL, AV_LOG_INFO,
2478                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2479                ist->file_index, ist->st->index,
2480                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2481                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2482
2483         ist->resample_width   = decoded_frame->width;
2484         ist->resample_height  = decoded_frame->height;
2485         ist->resample_pix_fmt = decoded_frame->format;
2486
2487         for (i = 0; i < nb_filtergraphs; i++)
2488             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2489                 configure_filtergraph(filtergraphs[i]) < 0) {
2490                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2491                 exit_program(1);
2492             }
2493     }
2494
2495     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2496     for (i = 0; i < ist->nb_filters; i++) {
2497         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2498                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2499                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2500         // XXX what an ugly hack
2501         if (ist->filters[i]->graph->nb_outputs == 1)
2502             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2503
2504         if (!frame_sample_aspect->num)
2505             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2506         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2507             FrameBuffer      *buf = decoded_frame->opaque;
2508             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2509                                         decoded_frame->data, decoded_frame->linesize,
2510                                         AV_PERM_READ | AV_PERM_PRESERVE,
2511                                         ist->st->codec->width, ist->st->codec->height,
2512                                         ist->st->codec->pix_fmt);
2513
2514             avfilter_copy_frame_props(fb, decoded_frame);
2515             fb->buf->priv           = buf;
2516             fb->buf->free           = filter_release_buffer;
2517
2518             av_assert0(buf->refcount>0);
2519             buf->refcount++;
2520             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2521                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2522                                  AV_BUFFERSRC_FLAG_NO_COPY);
2523         } else
2524         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2525             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2526             exit_program(1);
2527         }
2528
2529     }
2530
2531     av_free(buffer_to_free);
2532     return ret;
2533 }
2534
2535 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2536 {
2537     AVSubtitle subtitle;
2538     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2539                                           &subtitle, got_output, pkt);
2540     if (ret < 0)
2541         return ret;
2542     if (!*got_output)
2543         return ret;
2544
2545     rate_emu_sleep(ist);
2546
2547     for (i = 0; i < nb_output_streams; i++) {
2548         OutputStream *ost = output_streams[i];
2549
2550         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2551             continue;
2552
2553         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2554     }
2555
2556     avsubtitle_free(&subtitle);
2557     return ret;
2558 }
2559
2560 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2561 static int output_packet(InputStream *ist, const AVPacket *pkt)
2562 {
2563     int ret = 0, i;
2564     int got_output;
2565
2566     AVPacket avpkt;
2567     if (!ist->saw_first_ts) {
2568         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;
2569         ist->pts = 0;
2570         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2571             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2572             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2573         }
2574         ist->saw_first_ts = 1;
2575     }
2576
2577     if (ist->next_dts == AV_NOPTS_VALUE)
2578         ist->next_dts = ist->dts;
2579     if (ist->next_pts == AV_NOPTS_VALUE)
2580         ist->next_pts = ist->pts;
2581
2582     if (pkt == NULL) {
2583         /* EOF handling */
2584         av_init_packet(&avpkt);
2585         avpkt.data = NULL;
2586         avpkt.size = 0;
2587         goto handle_eof;
2588     } else {
2589         avpkt = *pkt;
2590     }
2591
2592     if (pkt->dts != AV_NOPTS_VALUE) {
2593         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2594         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2595             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2596     }
2597
2598     // while we have more to decode or while the decoder did output something on EOF
2599     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2600         int duration;
2601     handle_eof:
2602
2603         ist->pts = ist->next_pts;
2604         ist->dts = ist->next_dts;
2605
2606         if (avpkt.size && avpkt.size != pkt->size) {
2607             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2608                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2609             ist->showed_multi_packet_warning = 1;
2610         }
2611
2612         switch (ist->st->codec->codec_type) {
2613         case AVMEDIA_TYPE_AUDIO:
2614             ret = decode_audio    (ist, &avpkt, &got_output);
2615             break;
2616         case AVMEDIA_TYPE_VIDEO:
2617             ret = decode_video    (ist, &avpkt, &got_output);
2618             if (avpkt.duration) {
2619                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2620             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2621                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2622                 duration = ((int64_t)AV_TIME_BASE *
2623                                 ist->st->codec->time_base.num * ticks) /
2624                                 ist->st->codec->time_base.den;
2625             } else
2626                 duration = 0;
2627
2628             if(ist->dts != AV_NOPTS_VALUE && duration) {
2629                 ist->next_dts += duration;
2630             }else
2631                 ist->next_dts = AV_NOPTS_VALUE;
2632
2633             if (got_output)
2634                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2635             break;
2636         case AVMEDIA_TYPE_SUBTITLE:
2637             ret = transcode_subtitles(ist, &avpkt, &got_output);
2638             break;
2639         default:
2640             return -1;
2641         }
2642
2643         if (ret < 0)
2644             return ret;
2645
2646         avpkt.dts=
2647         avpkt.pts= AV_NOPTS_VALUE;
2648
2649         // touch data and size only if not EOF
2650         if (pkt) {
2651             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2652                 ret = avpkt.size;
2653             avpkt.data += ret;
2654             avpkt.size -= ret;
2655         }
2656         if (!got_output) {
2657             continue;
2658         }
2659     }
2660
2661     /* handle stream copy */
2662     if (!ist->decoding_needed) {
2663         rate_emu_sleep(ist);
2664         ist->dts = ist->next_dts;
2665         switch (ist->st->codec->codec_type) {
2666         case AVMEDIA_TYPE_AUDIO:
2667             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2668                              ist->st->codec->sample_rate;
2669             break;
2670         case AVMEDIA_TYPE_VIDEO:
2671             if (pkt->duration) {
2672                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2673             } else if(ist->st->codec->time_base.num != 0) {
2674                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2675                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2676                                   ist->st->codec->time_base.num * ticks) /
2677                                   ist->st->codec->time_base.den;
2678             }
2679             break;
2680         }
2681         ist->pts = ist->dts;
2682         ist->next_pts = ist->next_dts;
2683     }
2684     for (i = 0; pkt && i < nb_output_streams; i++) {
2685         OutputStream *ost = output_streams[i];
2686
2687         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2688             continue;
2689
2690         do_streamcopy(ist, ost, pkt);
2691     }
2692
2693     return 0;
2694 }
2695
2696 static void print_sdp(void)
2697 {
2698     char sdp[2048];
2699     int i;
2700     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2701
2702     if (!avc)
2703         exit_program(1);
2704     for (i = 0; i < nb_output_files; i++)
2705         avc[i] = output_files[i]->ctx;
2706
2707     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2708     printf("SDP:\n%s\n", sdp);
2709     fflush(stdout);
2710     av_freep(&avc);
2711 }
2712
2713 static int init_input_stream(int ist_index, char *error, int error_len)
2714 {
2715     InputStream *ist = input_streams[ist_index];
2716
2717     if (ist->decoding_needed) {
2718         AVCodec *codec = ist->dec;
2719         if (!codec) {
2720             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2721                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2722             return AVERROR(EINVAL);
2723         }
2724
2725         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2726         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2727             ist->st->codec->get_buffer     = codec_get_buffer;
2728             ist->st->codec->release_buffer = codec_release_buffer;
2729             ist->st->codec->opaque         = &ist->buffer_pool;
2730         }
2731
2732         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2733             av_dict_set(&ist->opts, "threads", "auto", 0);
2734         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2735             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2736                     ist->file_index, ist->st->index);
2737             return AVERROR(EINVAL);
2738         }
2739         assert_codec_experimental(ist->st->codec, 0);
2740         assert_avoptions(ist->opts);
2741     }
2742
2743     ist->next_pts = AV_NOPTS_VALUE;
2744     ist->next_dts = AV_NOPTS_VALUE;
2745     ist->is_start = 1;
2746
2747     return 0;
2748 }
2749
2750 static InputStream *get_input_stream(OutputStream *ost)
2751 {
2752     if (ost->source_index >= 0)
2753         return input_streams[ost->source_index];
2754     return NULL;
2755 }
2756
2757 static int transcode_init(void)
2758 {
2759     int ret = 0, i, j, k;
2760     AVFormatContext *oc;
2761     AVCodecContext *codec, *icodec = NULL;
2762     OutputStream *ost;
2763     InputStream *ist;
2764     char error[1024];
2765     int want_sdp = 1;
2766
2767     /* init framerate emulation */
2768     for (i = 0; i < nb_input_files; i++) {
2769         InputFile *ifile = input_files[i];
2770         if (ifile->rate_emu)
2771             for (j = 0; j < ifile->nb_streams; j++)
2772                 input_streams[j + ifile->ist_index]->start = av_gettime();
2773     }
2774
2775     /* output stream init */
2776     for (i = 0; i < nb_output_files; i++) {
2777         oc = output_files[i]->ctx;
2778         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2779             av_dump_format(oc, i, oc->filename, 1);
2780             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2781             return AVERROR(EINVAL);
2782         }
2783     }
2784
2785     /* init complex filtergraphs */
2786     for (i = 0; i < nb_filtergraphs; i++)
2787         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2788             return ret;
2789
2790     /* for each output stream, we compute the right encoding parameters */
2791     for (i = 0; i < nb_output_streams; i++) {
2792         ost = output_streams[i];
2793         oc  = output_files[ost->file_index]->ctx;
2794         ist = get_input_stream(ost);
2795
2796         if (ost->attachment_filename)
2797             continue;
2798
2799         codec  = ost->st->codec;
2800
2801         if (ist) {
2802             icodec = ist->st->codec;
2803
2804             ost->st->disposition          = ist->st->disposition;
2805             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2806             codec->chroma_sample_location = icodec->chroma_sample_location;
2807         }
2808
2809         if (ost->stream_copy) {
2810             uint64_t extra_size;
2811
2812             av_assert0(ist && !ost->filter);
2813
2814             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2815
2816             if (extra_size > INT_MAX) {
2817                 return AVERROR(EINVAL);
2818             }
2819
2820             /* if stream_copy is selected, no need to decode or encode */
2821             codec->codec_id   = icodec->codec_id;
2822             codec->codec_type = icodec->codec_type;
2823
2824             if (!codec->codec_tag) {
2825                 if (!oc->oformat->codec_tag ||
2826                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2827                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2828                     codec->codec_tag = icodec->codec_tag;
2829             }
2830
2831             codec->bit_rate       = icodec->bit_rate;
2832             codec->rc_max_rate    = icodec->rc_max_rate;
2833             codec->rc_buffer_size = icodec->rc_buffer_size;
2834             codec->field_order    = icodec->field_order;
2835             codec->extradata      = av_mallocz(extra_size);
2836             if (!codec->extradata) {
2837                 return AVERROR(ENOMEM);
2838             }
2839             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2840             codec->extradata_size= icodec->extradata_size;
2841             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2842
2843             codec->time_base = ist->st->time_base;
2844             /*
2845              * Avi is a special case here because it supports variable fps but
2846              * having the fps and timebase differe significantly adds quite some
2847              * overhead
2848              */
2849             if(!strcmp(oc->oformat->name, "avi")) {
2850                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2851                                  && av_q2d(ist->st->time_base) < 1.0/500
2852                     || copy_tb==0){
2853                     codec->time_base = icodec->time_base;
2854                     codec->time_base.num *= icodec->ticks_per_frame;
2855                     codec->time_base.den *= 2;
2856                     codec->ticks_per_frame = 2;
2857                 }
2858             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2859                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2860                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2861             ) {
2862                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2863                                 && av_q2d(ist->st->time_base) < 1.0/500
2864                    || copy_tb==0){
2865                     codec->time_base = icodec->time_base;
2866                     codec->time_base.num *= icodec->ticks_per_frame;
2867                 }
2868             }
2869
2870             if(ost->frame_rate.num)
2871                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2872
2873             av_reduce(&codec->time_base.num, &codec->time_base.den,
2874                         codec->time_base.num, codec->time_base.den, INT_MAX);
2875
2876             switch (codec->codec_type) {
2877             case AVMEDIA_TYPE_AUDIO:
2878                 if (audio_volume != 256) {
2879                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2880                     exit_program(1);
2881                 }
2882                 codec->channel_layout     = icodec->channel_layout;
2883                 codec->sample_rate        = icodec->sample_rate;
2884                 codec->channels           = icodec->channels;
2885                 codec->frame_size         = icodec->frame_size;
2886                 codec->audio_service_type = icodec->audio_service_type;
2887                 codec->block_align        = icodec->block_align;
2888                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2889                     codec->block_align= 0;
2890                 if(codec->codec_id == CODEC_ID_AC3)
2891                     codec->block_align= 0;
2892                 break;
2893             case AVMEDIA_TYPE_VIDEO:
2894                 codec->pix_fmt            = icodec->pix_fmt;
2895                 codec->width              = icodec->width;
2896                 codec->height             = icodec->height;
2897                 codec->has_b_frames       = icodec->has_b_frames;
2898                 if (!codec->sample_aspect_ratio.num) {
2899                     codec->sample_aspect_ratio   =
2900                     ost->st->sample_aspect_ratio =
2901                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2902                         ist->st->codec->sample_aspect_ratio.num ?
2903                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2904                 }
2905                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2906                 break;
2907             case AVMEDIA_TYPE_SUBTITLE:
2908                 codec->width  = icodec->width;
2909                 codec->height = icodec->height;
2910                 break;
2911             case AVMEDIA_TYPE_DATA:
2912             case AVMEDIA_TYPE_ATTACHMENT:
2913                 break;
2914             default:
2915                 abort();
2916             }
2917         } else {
2918             if (!ost->enc)
2919                 ost->enc = avcodec_find_encoder(codec->codec_id);
2920             if (!ost->enc) {
2921                 /* should only happen when a default codec is not present. */
2922                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2923                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2924                 ret = AVERROR(EINVAL);
2925                 goto dump_format;
2926             }
2927
2928             if (ist)
2929                 ist->decoding_needed = 1;
2930             ost->encoding_needed = 1;
2931
2932             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2933                 if (ost->filter && !ost->frame_rate.num)
2934                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2935                 if (ist && !ost->frame_rate.num)
2936                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2937                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2938                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2939                     ost->frame_rate = ost->enc->supported_framerates[idx];
2940                 }
2941             }
2942
2943             if (!ost->filter &&
2944                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2945                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2946                     FilterGraph *fg;
2947                     fg = init_simple_filtergraph(ist, ost);
2948                     if (configure_filtergraph(fg)) {
2949                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2950                         exit(1);
2951                     }
2952             }
2953
2954             switch (codec->codec_type) {
2955             case AVMEDIA_TYPE_AUDIO:
2956                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2957                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2958                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2959                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2960                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2961                 break;
2962             case AVMEDIA_TYPE_VIDEO:
2963                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2964                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2965                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2966                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2967                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2968                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2969                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2970                 }
2971                 for (j = 0; j < ost->forced_kf_count; j++)
2972                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2973                                                          AV_TIME_BASE_Q,
2974                                                          codec->time_base);
2975
2976                 codec->width  = ost->filter->filter->inputs[0]->w;
2977                 codec->height = ost->filter->filter->inputs[0]->h;
2978                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2979                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2980                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2981                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2982                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2983
2984                 if (!icodec ||
2985                     codec->width   != icodec->width  ||
2986                     codec->height  != icodec->height ||
2987                     codec->pix_fmt != icodec->pix_fmt) {
2988                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2989                 }
2990
2991                 break;
2992             case AVMEDIA_TYPE_SUBTITLE:
2993                 codec->time_base = (AVRational){1, 1000};
2994                 break;
2995             default:
2996                 abort();
2997                 break;
2998             }
2999             /* two pass mode */
3000             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3001                 char logfilename[1024];
3002                 FILE *f;
3003
3004                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3005                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3006                          i);
3007                 if (!strcmp(ost->enc->name, "libx264")) {
3008                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3009                 } else {
3010                     if (codec->flags & CODEC_FLAG_PASS2) {
3011                         char  *logbuffer;
3012                         size_t logbuffer_size;
3013                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3014                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3015                                    logfilename);
3016                             exit_program(1);
3017                         }
3018                         codec->stats_in = logbuffer;
3019                     }
3020                     if (codec->flags & CODEC_FLAG_PASS1) {
3021                         f = fopen(logfilename, "wb");
3022                         if (!f) {
3023                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3024                                 logfilename, strerror(errno));
3025                             exit_program(1);
3026                         }
3027                         ost->logfile = f;
3028                     }
3029                 }
3030             }
3031         }
3032     }
3033
3034     /* open each encoder */
3035     for (i = 0; i < nb_output_streams; i++) {
3036         ost = output_streams[i];
3037         if (ost->encoding_needed) {
3038             AVCodec      *codec = ost->enc;
3039             AVCodecContext *dec = NULL;
3040
3041             if ((ist = get_input_stream(ost)))
3042                 dec = ist->st->codec;
3043             if (dec && dec->subtitle_header) {
3044                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3045                 if (!ost->st->codec->subtitle_header) {
3046                     ret = AVERROR(ENOMEM);
3047                     goto dump_format;
3048                 }
3049                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3050                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3051             }
3052             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3053                 av_dict_set(&ost->opts, "threads", "auto", 0);
3054             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3055                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3056                         ost->file_index, ost->index);
3057                 ret = AVERROR(EINVAL);
3058                 goto dump_format;
3059             }
3060             assert_codec_experimental(ost->st->codec, 1);
3061             assert_avoptions(ost->opts);
3062             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3063                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3064                                              " It takes bits/s as argument, not kbits/s\n");
3065             extra_size += ost->st->codec->extradata_size;
3066
3067             if (ost->st->codec->me_threshold)
3068                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3069         }
3070     }
3071
3072     /* init input streams */
3073     for (i = 0; i < nb_input_streams; i++)
3074         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3075             goto dump_format;
3076
3077     /* discard unused programs */
3078     for (i = 0; i < nb_input_files; i++) {
3079         InputFile *ifile = input_files[i];
3080         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3081             AVProgram *p = ifile->ctx->programs[j];
3082             int discard  = AVDISCARD_ALL;
3083
3084             for (k = 0; k < p->nb_stream_indexes; k++)
3085                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3086                     discard = AVDISCARD_DEFAULT;
3087                     break;
3088                 }
3089             p->discard = discard;
3090         }
3091     }
3092
3093     /* open files and write file headers */
3094     for (i = 0; i < nb_output_files; i++) {
3095         oc = output_files[i]->ctx;
3096         oc->interrupt_callback = int_cb;
3097         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3098             char errbuf[128];
3099             const char *errbuf_ptr = errbuf;
3100             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3101                 errbuf_ptr = strerror(AVUNERROR(ret));
3102             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3103             ret = AVERROR(EINVAL);
3104             goto dump_format;
3105         }
3106 //         assert_avoptions(output_files[i]->opts);
3107         if (strcmp(oc->oformat->name, "rtp")) {
3108             want_sdp = 0;
3109         }
3110     }
3111
3112  dump_format:
3113     /* dump the file output parameters - cannot be done before in case
3114        of stream copy */
3115     for (i = 0; i < nb_output_files; i++) {
3116         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3117     }
3118
3119     /* dump the stream mapping */
3120     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3121     for (i = 0; i < nb_input_streams; i++) {
3122         ist = input_streams[i];
3123
3124         for (j = 0; j < ist->nb_filters; j++) {
3125             if (ist->filters[j]->graph->graph_desc) {
3126                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3127                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3128                        ist->filters[j]->name);
3129                 if (nb_filtergraphs > 1)
3130                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3131                 av_log(NULL, AV_LOG_INFO, "\n");
3132             }
3133         }
3134     }
3135
3136     for (i = 0; i < nb_output_streams; i++) {
3137         ost = output_streams[i];
3138
3139         if (ost->attachment_filename) {
3140             /* an attached file */
3141             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3142                    ost->attachment_filename, ost->file_index, ost->index);
3143             continue;
3144         }
3145
3146         if (ost->filter && ost->filter->graph->graph_desc) {
3147             /* output from a complex graph */
3148             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3149             if (nb_filtergraphs > 1)
3150                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3151
3152             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3153                    ost->index, ost->enc ? ost->enc->name : "?");
3154             continue;
3155         }
3156
3157         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3158                input_streams[ost->source_index]->file_index,
3159                input_streams[ost->source_index]->st->index,
3160                ost->file_index,
3161                ost->index);
3162         if (ost->sync_ist != input_streams[ost->source_index])
3163             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3164                    ost->sync_ist->file_index,
3165                    ost->sync_ist->st->index);
3166         if (ost->stream_copy)
3167             av_log(NULL, AV_LOG_INFO, " (copy)");
3168         else
3169             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3170                    input_streams[ost->source_index]->dec->name : "?",
3171                    ost->enc ? ost->enc->name : "?");
3172         av_log(NULL, AV_LOG_INFO, "\n");
3173     }
3174
3175     if (ret) {
3176         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3177         return ret;
3178     }
3179
3180     if (want_sdp) {
3181         print_sdp();
3182     }
3183
3184     return 0;
3185 }
3186
3187 /**
3188  * @return 1 if there are still streams where more output is wanted,
3189  *         0 otherwise
3190  */
3191 static int need_output(void)
3192 {
3193     int i;
3194
3195     for (i = 0; i < nb_output_streams; i++) {
3196         OutputStream *ost    = output_streams[i];
3197         OutputFile *of       = output_files[ost->file_index];
3198         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3199
3200         if (ost->is_past_recording_time ||
3201             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3202             continue;
3203         if (ost->frame_number >= ost->max_frames) {
3204             int j;
3205             for (j = 0; j < of->ctx->nb_streams; j++)
3206                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3207             continue;
3208         }
3209
3210         return 1;
3211     }
3212
3213     return 0;
3214 }
3215
3216 static int select_input_file(uint8_t *no_packet)
3217 {
3218     int64_t ipts_min = INT64_MAX;
3219     int i, file_index = -1;
3220
3221     for (i = 0; i < nb_input_streams; i++) {
3222         InputStream *ist = input_streams[i];
3223         int64_t ipts     = ist->pts;
3224
3225         if (ist->discard || no_packet[ist->file_index])
3226             continue;
3227         if (!input_files[ist->file_index]->eof_reached) {
3228             if (ipts < ipts_min) {
3229                 ipts_min = ipts;
3230                 file_index = ist->file_index;
3231             }
3232         }
3233     }
3234
3235     return file_index;
3236 }
3237
3238 static int check_keyboard_interaction(int64_t cur_time)
3239 {
3240     int i, ret, key;
3241     static int64_t last_time;
3242     if (received_nb_signals)
3243         return AVERROR_EXIT;
3244     /* read_key() returns 0 on EOF */
3245     if(cur_time - last_time >= 100000 && !run_as_daemon){
3246         key =  read_key();
3247         last_time = cur_time;
3248     }else
3249         key = -1;
3250     if (key == 'q')
3251         return AVERROR_EXIT;
3252     if (key == '+') av_log_set_level(av_log_get_level()+10);
3253     if (key == '-') av_log_set_level(av_log_get_level()-10);
3254     if (key == 's') qp_hist     ^= 1;
3255     if (key == 'h'){
3256         if (do_hex_dump){
3257             do_hex_dump = do_pkt_dump = 0;
3258         } else if(do_pkt_dump){
3259             do_hex_dump = 1;
3260         } else
3261             do_pkt_dump = 1;
3262         av_log_set_level(AV_LOG_DEBUG);
3263     }
3264     if (key == 'c' || key == 'C'){
3265         char buf[4096], target[64], command[256], arg[256] = {0};
3266         double time;
3267         int k, n = 0;
3268         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3269         i = 0;
3270         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3271             if (k > 0)
3272                 buf[i++] = k;
3273         buf[i] = 0;
3274         if (k > 0 &&
3275             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3276             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3277                    target, time, command, arg);
3278             for (i = 0; i < nb_filtergraphs; i++) {
3279                 FilterGraph *fg = filtergraphs[i];
3280                 if (fg->graph) {
3281                     if (time < 0) {
3282                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3283                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3284                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3285                     } else {
3286                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3287                     }
3288                 }
3289             }
3290         } else {
3291             av_log(NULL, AV_LOG_ERROR,
3292                    "Parse error, at least 3 arguments were expected, "
3293                    "only %d given in string '%s'\n", n, buf);
3294         }
3295     }
3296     if (key == 'd' || key == 'D'){
3297         int debug=0;
3298         if(key == 'D') {
3299             debug = input_streams[0]->st->codec->debug<<1;
3300             if(!debug) debug = 1;
3301             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3302                 debug += debug;
3303         }else
3304             if(scanf("%d", &debug)!=1)
3305                 fprintf(stderr,"error parsing debug value\n");
3306         for(i=0;i<nb_input_streams;i++) {
3307             input_streams[i]->st->codec->debug = debug;
3308         }
3309         for(i=0;i<nb_output_streams;i++) {
3310             OutputStream *ost = output_streams[i];
3311             ost->st->codec->debug = debug;
3312         }
3313         if(debug) av_log_set_level(AV_LOG_DEBUG);
3314         fprintf(stderr,"debug=%d\n", debug);
3315     }
3316     if (key == '?'){
3317         fprintf(stderr, "key    function\n"
3318                         "?      show this help\n"
3319                         "+      increase verbosity\n"
3320                         "-      decrease verbosity\n"
3321                         "c      Send command to filtergraph\n"
3322                         "D      cycle through available debug modes\n"
3323                         "h      dump packets/hex press to cycle through the 3 states\n"
3324                         "q      quit\n"
3325                         "s      Show QP histogram\n"
3326         );
3327     }
3328     return 0;
3329 }
3330
3331 #if HAVE_PTHREADS
3332 static void *input_thread(void *arg)
3333 {
3334     InputFile *f = arg;
3335     int ret = 0;
3336
3337     while (!transcoding_finished && ret >= 0) {
3338         AVPacket pkt;
3339         ret = av_read_frame(f->ctx, &pkt);
3340
3341         if (ret == AVERROR(EAGAIN)) {
3342             usleep(10000);
3343             ret = 0;
3344             continue;
3345         } else if (ret < 0)
3346             break;
3347
3348         pthread_mutex_lock(&f->fifo_lock);
3349         while (!av_fifo_space(f->fifo))
3350             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3351
3352         av_dup_packet(&pkt);
3353         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3354
3355         pthread_mutex_unlock(&f->fifo_lock);
3356     }
3357
3358     f->finished = 1;
3359     return NULL;
3360 }
3361
3362 static void free_input_threads(void)
3363 {
3364     int i;
3365
3366     if (nb_input_files == 1)
3367         return;
3368
3369     transcoding_finished = 1;
3370
3371     for (i = 0; i < nb_input_files; i++) {
3372         InputFile *f = input_files[i];
3373         AVPacket pkt;
3374
3375         if (!f->fifo || f->joined)
3376             continue;
3377
3378         pthread_mutex_lock(&f->fifo_lock);
3379         while (av_fifo_size(f->fifo)) {
3380             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3381             av_free_packet(&pkt);
3382         }
3383         pthread_cond_signal(&f->fifo_cond);
3384         pthread_mutex_unlock(&f->fifo_lock);
3385
3386         pthread_join(f->thread, NULL);
3387         f->joined = 1;
3388
3389         while (av_fifo_size(f->fifo)) {
3390             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3391             av_free_packet(&pkt);
3392         }
3393         av_fifo_free(f->fifo);
3394     }
3395 }
3396
3397 static int init_input_threads(void)
3398 {
3399     int i, ret;
3400
3401     if (nb_input_files == 1)
3402         return 0;
3403
3404     for (i = 0; i < nb_input_files; i++) {
3405         InputFile *f = input_files[i];
3406
3407         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3408             return AVERROR(ENOMEM);
3409
3410         pthread_mutex_init(&f->fifo_lock, NULL);
3411         pthread_cond_init (&f->fifo_cond, NULL);
3412
3413         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3414             return AVERROR(ret);
3415     }
3416     return 0;
3417 }
3418
3419 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3420 {
3421     int ret = 0;
3422
3423     pthread_mutex_lock(&f->fifo_lock);
3424
3425     if (av_fifo_size(f->fifo)) {
3426         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3427         pthread_cond_signal(&f->fifo_cond);
3428     } else {
3429         if (f->finished)
3430             ret = AVERROR_EOF;
3431         else
3432             ret = AVERROR(EAGAIN);
3433     }
3434
3435     pthread_mutex_unlock(&f->fifo_lock);
3436
3437     return ret;
3438 }
3439 #endif
3440
3441 static int get_input_packet(InputFile *f, AVPacket *pkt)
3442 {
3443 #if HAVE_PTHREADS
3444     if (nb_input_files > 1)
3445         return get_input_packet_mt(f, pkt);
3446 #endif
3447     return av_read_frame(f->ctx, pkt);
3448 }
3449
3450 /*
3451  * The following code is the main loop of the file converter
3452  */
3453 static int transcode(void)
3454 {
3455     int ret, i;
3456     AVFormatContext *is, *os;
3457     OutputStream *ost;
3458     InputStream *ist;
3459     uint8_t *no_packet;
3460     int no_packet_count = 0;
3461     int64_t timer_start;
3462
3463     if (!(no_packet = av_mallocz(nb_input_files)))
3464         exit_program(1);
3465
3466     ret = transcode_init();
3467     if (ret < 0)
3468         goto fail;
3469
3470     if (!using_stdin) {
3471         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3472     }
3473
3474     timer_start = av_gettime();
3475
3476 #if HAVE_PTHREADS
3477     if ((ret = init_input_threads()) < 0)
3478         goto fail;
3479 #endif
3480
3481     for (; received_sigterm == 0;) {
3482         int file_index, ist_index;
3483         AVPacket pkt;
3484         int64_t cur_time= av_gettime();
3485
3486         /* if 'q' pressed, exits */
3487         if (!using_stdin)
3488             if (check_keyboard_interaction(cur_time) < 0)
3489                 break;
3490
3491         /* check if there's any stream where output is still needed */
3492         if (!need_output()) {
3493             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3494             break;
3495         }
3496
3497         /* select the stream that we must read now */
3498         file_index = select_input_file(no_packet);
3499         /* if none, if is finished */
3500         if (file_index < 0) {
3501             if (no_packet_count) {
3502                 no_packet_count = 0;
3503                 memset(no_packet, 0, nb_input_files);
3504                 usleep(10000);
3505                 continue;
3506             }
3507             av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3508             break;
3509         }
3510
3511         is  = input_files[file_index]->ctx;
3512         ret = get_input_packet(input_files[file_index], &pkt);
3513
3514         if (ret == AVERROR(EAGAIN)) {
3515             no_packet[file_index] = 1;
3516             no_packet_count++;
3517             continue;
3518         }
3519         if (ret < 0) {
3520             input_files[file_index]->eof_reached = 1;
3521
3522             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3523                 ist = input_streams[input_files[file_index]->ist_index + i];
3524                 if (ist->decoding_needed)
3525                     output_packet(ist, NULL);
3526             }
3527
3528             if (opt_shortest)
3529                 break;
3530             else
3531                 continue;
3532         }
3533
3534         no_packet_count = 0;
3535         memset(no_packet, 0, nb_input_files);
3536
3537         if (do_pkt_dump) {
3538             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3539                              is->streams[pkt.stream_index]);
3540         }
3541         /* the following test is needed in case new streams appear
3542            dynamically in stream : we ignore them */
3543         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3544             goto discard_packet;
3545         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3546         ist = input_streams[ist_index];
3547         if (ist->discard)
3548             goto discard_packet;
3549
3550         if (pkt.dts != AV_NOPTS_VALUE)
3551             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3552         if (pkt.pts != AV_NOPTS_VALUE)
3553             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3554
3555         if (pkt.pts != AV_NOPTS_VALUE)
3556             pkt.pts *= ist->ts_scale;
3557         if (pkt.dts != AV_NOPTS_VALUE)
3558             pkt.dts *= ist->ts_scale;
3559
3560         if (debug_ts) {
3561             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3562                     "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
3563                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3564                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3565                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3566                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3567                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3568                     input_files[ist->file_index]->ts_offset);
3569         }
3570
3571         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3572             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3573             int64_t delta   = pkt_dts - ist->next_dts;
3574             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3575             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3576                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3577                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3578                 pkt_dts+1<ist->pts){
3579                 input_files[ist->file_index]->ts_offset -= delta;
3580                 av_log(NULL, AV_LOG_DEBUG,
3581                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3582                        delta, input_files[ist->file_index]->ts_offset);
3583                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3584                 if (pkt.pts != AV_NOPTS_VALUE)
3585                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3586             }
3587             } else {
3588                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3589                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3590                      pkt_dts+1<ist->pts){
3591                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3592                     pkt.dts = AV_NOPTS_VALUE;
3593                 }
3594                 if (pkt.pts != AV_NOPTS_VALUE){
3595                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3596                     delta   = pkt_pts - ist->next_dts;
3597                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3598                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3599                         pkt_pts+1<ist->pts) {
3600                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3601                         pkt.pts = AV_NOPTS_VALUE;
3602                     }
3603                 }
3604             }
3605         }
3606
3607         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3608         if ((ret = output_packet(ist, &pkt)) < 0 ||
3609             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3610             char buf[128];
3611             av_strerror(ret, buf, sizeof(buf));
3612             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3613                    ist->file_index, ist->st->index, buf);
3614             if (exit_on_error)
3615                 exit_program(1);
3616             av_free_packet(&pkt);
3617             continue;
3618         }
3619
3620     discard_packet:
3621         av_free_packet(&pkt);
3622
3623         /* dump report by using the output first video and audio streams */
3624         print_report(0, timer_start, cur_time);
3625     }