ffmpeg: add -(no)stdin option.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #if HAVE_ISATTY
35 #include <unistd.h>
36 #endif
37 #include "libavformat/avformat.h"
38 #include "libavdevice/avdevice.h"
39 #include "libswscale/swscale.h"
40 #include "libswresample/swresample.h"
41 #include "libavutil/opt.h"
42 #include "libavutil/audioconvert.h"
43 #include "libavutil/parseutils.h"
44 #include "libavutil/samplefmt.h"
45 #include "libavutil/colorspace.h"
46 #include "libavutil/fifo.h"
47 #include "libavutil/intreadwrite.h"
48 #include "libavutil/dict.h"
49 #include "libavutil/mathematics.h"
50 #include "libavutil/pixdesc.h"
51 #include "libavutil/avstring.h"
52 #include "libavutil/libm.h"
53 #include "libavutil/imgutils.h"
54 #include "libavutil/timestamp.h"
55 #include "libavutil/bprint.h"
56 #include "libavutil/time.h"
57 #include "libavformat/os_support.h"
58
59 #include "libavformat/ffm.h" // not public API
60
61 # include "libavfilter/avcodec.h"
62 # include "libavfilter/avfilter.h"
63 # include "libavfilter/avfiltergraph.h"
64 # include "libavfilter/buffersrc.h"
65 # include "libavfilter/buffersink.h"
66
67 #if HAVE_SYS_RESOURCE_H
68 #include <sys/types.h>
69 #include <sys/resource.h>
70 #elif HAVE_GETPROCESSTIMES
71 #include <windows.h>
72 #endif
73 #if HAVE_GETPROCESSMEMORYINFO
74 #include <windows.h>
75 #include <psapi.h>
76 #endif
77
78 #if HAVE_SYS_SELECT_H
79 #include <sys/select.h>
80 #endif
81
82 #if HAVE_TERMIOS_H
83 #include <fcntl.h>
84 #include <sys/ioctl.h>
85 #include <sys/time.h>
86 #include <termios.h>
87 #elif HAVE_KBHIT
88 #include <conio.h>
89 #endif
90
91 #if HAVE_PTHREADS
92 #include <pthread.h>
93 #endif
94
95 #include <time.h>
96
97 #include "cmdutils.h"
98
99 #include "libavutil/avassert.h"
100
101 #define VSYNC_AUTO       -1
102 #define VSYNC_PASSTHROUGH 0
103 #define VSYNC_CFR         1
104 #define VSYNC_VFR         2
105 #define VSYNC_DROP        0xff
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 /* select an input stream for an output stream */
111 typedef struct StreamMap {
112     int disabled;           /** 1 is this mapping is disabled by a negative map */
113     int file_index;
114     int stream_index;
115     int sync_file_index;
116     int sync_stream_index;
117     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
118 } StreamMap;
119
120 typedef struct {
121     int  file_idx,  stream_idx,  channel_idx; // input
122     int ofile_idx, ostream_idx;               // output
123 } AudioChannelMap;
124
125 static const OptionDef options[];
126
127 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
128
129 static int frame_bits_per_raw_sample = 0;
130 static int video_discard = 0;
131 static int same_quant = 0;
132 static int do_deinterlace = 0;
133 static int intra_dc_precision = 8;
134 static int qp_hist = 0;
135 static int intra_only = 0;
136 static const char *video_codec_name    = NULL;
137 static const char *audio_codec_name    = NULL;
138 static const char *subtitle_codec_name = NULL;
139
140 static int file_overwrite = 0;
141 static int no_file_overwrite = 0;
142 static int do_benchmark = 0;
143 static int do_benchmark_all = 0;
144 static int do_hex_dump = 0;
145 static int do_pkt_dump = 0;
146 static int do_psnr = 0;
147 static int do_pass = 0;
148 static const char *pass_logfilename_prefix;
149 static int video_sync_method = VSYNC_AUTO;
150 static int audio_sync_method = 0;
151 static float audio_drift_threshold = 0.1;
152 static int copy_ts = 0;
153 static int copy_tb = -1;
154 static int opt_shortest = 0;
155 static char *vstats_filename;
156 static FILE *vstats_file;
157
158 static int audio_volume = 256;
159
160 static int exit_on_error = 0;
161 static int stdin_interaction = 1;
162 static int run_as_daemon  = 0;
163 static volatile int received_nb_signals = 0;
164 static int64_t video_size = 0;
165 static int64_t audio_size = 0;
166 static int64_t subtitle_size = 0;
167 static int64_t extra_size = 0;
168 static int nb_frames_dup = 0;
169 static int nb_frames_drop = 0;
170 static int input_sync;
171
172 static float dts_delta_threshold = 10;
173 static float dts_error_threshold = 3600*30;
174
175 static int print_stats = 1;
176 static int debug_ts = 0;
177 static int current_time;
178 static AVIOContext *progress_avio = NULL;
179
180 static uint8_t *subtitle_out;
181
182 #if HAVE_PTHREADS
183 /* signal to input threads that they should exit; set by the main thread */
184 static int transcoding_finished;
185 #endif
186
187 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
188
189 typedef struct InputFilter {
190     AVFilterContext    *filter;
191     struct InputStream *ist;
192     struct FilterGraph *graph;
193     uint8_t            *name;
194 } InputFilter;
195
196 typedef struct OutputFilter {
197     AVFilterContext     *filter;
198     struct OutputStream *ost;
199     struct FilterGraph  *graph;
200     uint8_t             *name;
201
202     /* temporary storage until stream maps are processed */
203     AVFilterInOut       *out_tmp;
204 } OutputFilter;
205
206 typedef struct FilterGraph {
207     int            index;
208     const char    *graph_desc;
209
210     AVFilterGraph *graph;
211
212     InputFilter   **inputs;
213     int          nb_inputs;
214     OutputFilter **outputs;
215     int         nb_outputs;
216 } FilterGraph;
217
218 typedef struct InputStream {
219     int file_index;
220     AVStream *st;
221     int discard;             /* true if stream data should be discarded */
222     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
223     AVCodec *dec;
224     AVFrame *decoded_frame;
225
226     int64_t       start;     /* time when read started */
227     /* predicted dts of the next packet read for this stream or (when there are
228      * several frames in a packet) of the next frame in current packet */
229     int64_t       next_dts;
230     /* dts of the last packet read for this stream */
231     int64_t       dts;
232
233     int64_t       next_pts;  /* synthetic pts for the next decode frame */
234     int64_t       pts;       /* current pts of the decoded frame */
235     double ts_scale;
236     int is_start;            /* is 1 at the start and after a discontinuity */
237     int saw_first_ts;
238     int showed_multi_packet_warning;
239     AVDictionary *opts;
240     AVRational framerate;               /* framerate forced with -r */
241     int top_field_first;
242
243     int resample_height;
244     int resample_width;
245     int resample_pix_fmt;
246
247     int      resample_sample_fmt;
248     int      resample_sample_rate;
249     int      resample_channels;
250     uint64_t resample_channel_layout;
251
252     /* a pool of free buffers for decoded data */
253     FrameBuffer *buffer_pool;
254     int dr1;
255
256     /* decoded data from this stream goes into all those filters
257      * currently video and audio only */
258     InputFilter **filters;
259     int        nb_filters;
260 } InputStream;
261
262 typedef struct InputFile {
263     AVFormatContext *ctx;
264     int eof_reached;      /* true if eof reached */
265     int ist_index;        /* index of first stream in input_streams */
266     int64_t ts_offset;
267     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
268                              from ctx.nb_streams if new streams appear during av_read_frame() */
269     int rate_emu;
270
271 #if HAVE_PTHREADS
272     pthread_t thread;           /* thread reading from this file */
273     int finished;               /* the thread has exited */
274     int joined;                 /* the thread has been joined */
275     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
276     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
277     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
278 #endif
279 } InputFile;
280
281 typedef struct OutputStream {
282     int file_index;          /* file index */
283     int index;               /* stream index in the output file */
284     int source_index;        /* InputStream index */
285     AVStream *st;            /* stream in the output file */
286     int encoding_needed;     /* true if encoding needed for this stream */
287     int frame_number;
288     /* input pts and corresponding output pts
289        for A/V sync */
290     struct InputStream *sync_ist; /* input stream to sync against */
291     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
292     /* pts of the first frame encoded for this stream, used for limiting
293      * recording time */
294     int64_t first_pts;
295     AVBitStreamFilterContext *bitstream_filters;
296     AVCodec *enc;
297     int64_t max_frames;
298     AVFrame *filtered_frame;
299
300     /* video only */
301     AVRational frame_rate;
302     int force_fps;
303     int top_field_first;
304
305     float frame_aspect_ratio;
306     float last_quality;
307
308     /* forced key frames */
309     int64_t *forced_kf_pts;
310     int forced_kf_count;
311     int forced_kf_index;
312     char *forced_keyframes;
313
314     /* audio only */
315     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
316     int audio_channels_mapped;           /* number of channels in audio_channels_map */
317
318     FILE *logfile;
319
320     OutputFilter *filter;
321     char *avfilter;
322
323     int64_t sws_flags;
324     int64_t swr_dither_method;
325     double swr_dither_scale;
326     AVDictionary *opts;
327     int is_past_recording_time;
328     int stream_copy;
329     const char *attachment_filename;
330     int copy_initial_nonkeyframes;
331
332     int keep_pix_fmt;
333 } OutputStream;
334
335
336 #if HAVE_TERMIOS_H
337
338 /* init terminal so that we can grab keys */
339 static struct termios oldtty;
340 static int restore_tty;
341 #endif
342
343 typedef struct OutputFile {
344     AVFormatContext *ctx;
345     AVDictionary *opts;
346     int ost_index;       /* index of the first stream in output_streams */
347     int64_t recording_time; /* desired length of the resulting file in microseconds */
348     int64_t start_time;     /* start time in microseconds */
349     uint64_t limit_filesize; /* filesize limit expressed in bytes */
350 } OutputFile;
351
352 static InputStream **input_streams = NULL;
353 static int        nb_input_streams = 0;
354 static InputFile   **input_files   = NULL;
355 static int        nb_input_files   = 0;
356
357 static OutputStream **output_streams = NULL;
358 static int         nb_output_streams = 0;
359 static OutputFile   **output_files   = NULL;
360 static int         nb_output_files   = 0;
361
362 static FilterGraph **filtergraphs;
363 int               nb_filtergraphs;
364
365 typedef struct OptionsContext {
366     /* input/output options */
367     int64_t start_time;
368     const char *format;
369
370     SpecifierOpt *codec_names;
371     int        nb_codec_names;
372     SpecifierOpt *audio_channels;
373     int        nb_audio_channels;
374     SpecifierOpt *audio_sample_rate;
375     int        nb_audio_sample_rate;
376     SpecifierOpt *frame_rates;
377     int        nb_frame_rates;
378     SpecifierOpt *frame_sizes;
379     int        nb_frame_sizes;
380     SpecifierOpt *frame_pix_fmts;
381     int        nb_frame_pix_fmts;
382
383     /* input options */
384     int64_t input_ts_offset;
385     int rate_emu;
386
387     SpecifierOpt *ts_scale;
388     int        nb_ts_scale;
389     SpecifierOpt *dump_attachment;
390     int        nb_dump_attachment;
391
392     /* output options */
393     StreamMap *stream_maps;
394     int     nb_stream_maps;
395     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
396     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
397     int metadata_global_manual;
398     int metadata_streams_manual;
399     int metadata_chapters_manual;
400     const char **attachments;
401     int       nb_attachments;
402
403     int chapters_input_file;
404
405     int64_t recording_time;
406     uint64_t limit_filesize;
407     float mux_preload;
408     float mux_max_delay;
409
410     int video_disable;
411     int audio_disable;
412     int subtitle_disable;
413     int data_disable;
414
415     /* indexed by output file stream index */
416     int   *streamid_map;
417     int nb_streamid_map;
418
419     SpecifierOpt *metadata;
420     int        nb_metadata;
421     SpecifierOpt *max_frames;
422     int        nb_max_frames;
423     SpecifierOpt *bitstream_filters;
424     int        nb_bitstream_filters;
425     SpecifierOpt *codec_tags;
426     int        nb_codec_tags;
427     SpecifierOpt *sample_fmts;
428     int        nb_sample_fmts;
429     SpecifierOpt *qscale;
430     int        nb_qscale;
431     SpecifierOpt *forced_key_frames;
432     int        nb_forced_key_frames;
433     SpecifierOpt *force_fps;
434     int        nb_force_fps;
435     SpecifierOpt *frame_aspect_ratios;
436     int        nb_frame_aspect_ratios;
437     SpecifierOpt *rc_overrides;
438     int        nb_rc_overrides;
439     SpecifierOpt *intra_matrices;
440     int        nb_intra_matrices;
441     SpecifierOpt *inter_matrices;
442     int        nb_inter_matrices;
443     SpecifierOpt *top_field_first;
444     int        nb_top_field_first;
445     SpecifierOpt *metadata_map;
446     int        nb_metadata_map;
447     SpecifierOpt *presets;
448     int        nb_presets;
449     SpecifierOpt *copy_initial_nonkeyframes;
450     int        nb_copy_initial_nonkeyframes;
451     SpecifierOpt *filters;
452     int        nb_filters;
453 } OptionsContext;
454
455 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
456
457 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
458 {\
459     int i, ret;\
460     for (i = 0; i < o->nb_ ## name; i++) {\
461         char *spec = o->name[i].specifier;\
462         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
463             outvar = o->name[i].u.type;\
464         else if (ret < 0)\
465             exit_program(1);\
466     }\
467 }
468
469 static int64_t getutime(void)
470 {
471 #if HAVE_GETRUSAGE
472     struct rusage rusage;
473
474     getrusage(RUSAGE_SELF, &rusage);
475     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
476 #elif HAVE_GETPROCESSTIMES
477     HANDLE proc;
478     FILETIME c, e, k, u;
479     proc = GetCurrentProcess();
480     GetProcessTimes(proc, &c, &e, &k, &u);
481     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
482 #else
483     return av_gettime();
484 #endif
485 }
486
487 static void update_benchmark(const char *fmt, ...)
488 {
489     if (do_benchmark_all) {
490         int64_t t = getutime();
491         va_list va;
492         char buf[1024];
493
494         if (fmt) {
495             va_start(va, fmt);
496             vsnprintf(buf, sizeof(buf), fmt, va);
497             va_end(va);
498             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
499         }
500         current_time = t;
501     }
502 }
503
504 static void reset_options(OptionsContext *o, int is_input)
505 {
506     const OptionDef *po = options;
507     OptionsContext bak= *o;
508     int i;
509
510     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
511     while (po->name) {
512         void *dst = (uint8_t*)o + po->u.off;
513
514         if (po->flags & OPT_SPEC) {
515             SpecifierOpt **so = dst;
516             int i, *count = (int*)(so + 1);
517             for (i = 0; i < *count; i++) {
518                 av_freep(&(*so)[i].specifier);
519                 if (po->flags & OPT_STRING)
520                     av_freep(&(*so)[i].u.str);
521             }
522             av_freep(so);
523             *count = 0;
524         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
525             av_freep(dst);
526         po++;
527     }
528
529     for (i = 0; i < o->nb_stream_maps; i++)
530         av_freep(&o->stream_maps[i].linklabel);
531     av_freep(&o->stream_maps);
532     av_freep(&o->audio_channel_maps);
533     av_freep(&o->streamid_map);
534
535     memset(o, 0, sizeof(*o));
536
537     if (is_input) {
538         o->recording_time = bak.recording_time;
539         if (o->recording_time != INT64_MAX)
540             av_log(NULL, AV_LOG_WARNING,
541                    "-t is not an input option, keeping it for the next output;"
542                    " consider fixing your command line.\n");
543     } else
544         o->recording_time = INT64_MAX;
545     o->mux_max_delay  = 0.7;
546     o->limit_filesize = UINT64_MAX;
547     o->chapters_input_file = INT_MAX;
548
549     uninit_opts();
550     init_opts();
551 }
552
553 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
554 {
555     if (codec && codec->pix_fmts) {
556         const enum PixelFormat *p = codec->pix_fmts;
557         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
558         enum PixelFormat best= PIX_FMT_NONE;
559         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
560             if (st->codec->codec_id == CODEC_ID_MJPEG) {
561                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
562             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
563                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
564                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
565             }
566         }
567         for (; *p != PIX_FMT_NONE; p++) {
568             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
569             if (*p == target)
570                 break;
571         }
572         if (*p == PIX_FMT_NONE) {
573             if (target != PIX_FMT_NONE)
574                 av_log(NULL, AV_LOG_WARNING,
575                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
576                        av_pix_fmt_descriptors[target].name,
577                        codec->name,
578                        av_pix_fmt_descriptors[best].name);
579             return best;
580         }
581     }
582     return target;
583 }
584
585 static char *choose_pix_fmts(OutputStream *ost)
586 {
587      if (ost->keep_pix_fmt) {
588         if (ost->filter)
589             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
590                                             AVFILTER_AUTO_CONVERT_NONE);
591         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
592             return NULL;
593         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
594     }
595     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
596         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
597     } else if (ost->enc && ost->enc->pix_fmts) {
598         const enum PixelFormat *p;
599         AVIOContext *s = NULL;
600         uint8_t *ret;
601         int len;
602
603         if (avio_open_dyn_buf(&s) < 0)
604             exit_program(1);
605
606         p = ost->enc->pix_fmts;
607         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
608             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
609                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
610             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
611                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
612                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
613             }
614         }
615
616         for (; *p != PIX_FMT_NONE; p++) {
617             const char *name = av_get_pix_fmt_name(*p);
618             avio_printf(s, "%s:", name);
619         }
620         len = avio_close_dyn_buf(s, &ret);
621         ret[len - 1] = 0;
622         return ret;
623     } else
624         return NULL;
625 }
626
627 /**
628  * Define a function for building a string containing a list of
629  * allowed formats,
630  */
631 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
632 static char *choose_ ## var ## s(OutputStream *ost)                             \
633 {                                                                               \
634     if (ost->st->codec->var != none) {                                          \
635         get_name(ost->st->codec->var);                                          \
636         return av_strdup(name);                                                 \
637     } else if (ost->enc->supported_list) {                                      \
638         const type *p;                                                          \
639         AVIOContext *s = NULL;                                                  \
640         uint8_t *ret;                                                           \
641         int len;                                                                \
642                                                                                 \
643         if (avio_open_dyn_buf(&s) < 0)                                          \
644             exit_program(1);                                                    \
645                                                                                 \
646         for (p = ost->enc->supported_list; *p != none; p++) {                   \
647             get_name(*p);                                                       \
648             avio_printf(s, "%s" separator, name);                               \
649         }                                                                       \
650         len = avio_close_dyn_buf(s, &ret);                                      \
651         ret[len - 1] = 0;                                                       \
652         return ret;                                                             \
653     } else                                                                      \
654         return NULL;                                                            \
655 }
656
657 #define GET_PIX_FMT_NAME(pix_fmt)\
658     const char *name = av_get_pix_fmt_name(pix_fmt);
659
660 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
661 //                   GET_PIX_FMT_NAME, ":")
662
663 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
664     const char *name = av_get_sample_fmt_name(sample_fmt)
665
666 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
667                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
668
669 #define GET_SAMPLE_RATE_NAME(rate)\
670     char name[16];\
671     snprintf(name, sizeof(name), "%d", rate);
672
673 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
674                   GET_SAMPLE_RATE_NAME, ",")
675
676 #define GET_CH_LAYOUT_NAME(ch_layout)\
677     char name[16];\
678     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
679
680 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
681                   GET_CH_LAYOUT_NAME, ",")
682
683 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
684 {
685     FilterGraph *fg = av_mallocz(sizeof(*fg));
686
687     if (!fg)
688         exit_program(1);
689     fg->index = nb_filtergraphs;
690
691     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
692                              fg->nb_outputs + 1);
693     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
694         exit_program(1);
695     fg->outputs[0]->ost   = ost;
696     fg->outputs[0]->graph = fg;
697
698     ost->filter = fg->outputs[0];
699
700     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
701                             fg->nb_inputs + 1);
702     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
703         exit_program(1);
704     fg->inputs[0]->ist   = ist;
705     fg->inputs[0]->graph = fg;
706
707     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
708                               &ist->nb_filters, ist->nb_filters + 1);
709     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
710
711     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
712                               &nb_filtergraphs, nb_filtergraphs + 1);
713     filtergraphs[nb_filtergraphs - 1] = fg;
714
715     return fg;
716 }
717
718 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
719 {
720     InputStream *ist = NULL;
721     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
722     int i;
723
724     // TODO: support other filter types
725     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
726         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
727                "currently.\n");
728         exit_program(1);
729     }
730
731     if (in->name) {
732         AVFormatContext *s;
733         AVStream       *st = NULL;
734         char *p;
735         int file_idx = strtol(in->name, &p, 0);
736
737         if (file_idx < 0 || file_idx >= nb_input_files) {
738             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
739                    file_idx, fg->graph_desc);
740             exit_program(1);
741         }
742         s = input_files[file_idx]->ctx;
743
744         for (i = 0; i < s->nb_streams; i++) {
745             if (s->streams[i]->codec->codec_type != type)
746                 continue;
747             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
748                 st = s->streams[i];
749                 break;
750             }
751         }
752         if (!st) {
753             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
754                    "matches no streams.\n", p, fg->graph_desc);
755             exit_program(1);
756         }
757         ist = input_streams[input_files[file_idx]->ist_index + st->index];
758     } else {
759         /* find the first unused stream of corresponding type */
760         for (i = 0; i < nb_input_streams; i++) {
761             ist = input_streams[i];
762             if (ist->st->codec->codec_type == type && ist->discard)
763                 break;
764         }
765         if (i == nb_input_streams) {
766             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
767                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
768                    in->filter_ctx->name);
769             exit_program(1);
770         }
771     }
772     av_assert0(ist);
773
774     ist->discard         = 0;
775     ist->decoding_needed = 1;
776     ist->st->discard = AVDISCARD_NONE;
777
778     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
779                             &fg->nb_inputs, fg->nb_inputs + 1);
780     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
781         exit_program(1);
782     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
783     fg->inputs[fg->nb_inputs - 1]->graph = fg;
784
785     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
786                               &ist->nb_filters, ist->nb_filters + 1);
787     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
788 }
789
790 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
791 {
792     char *pix_fmts;
793     OutputStream *ost = ofilter->ost;
794     AVCodecContext *codec = ost->st->codec;
795     AVFilterContext *last_filter = out->filter_ctx;
796     int pad_idx = out->pad_idx;
797     int ret;
798     char name[255];
799     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
800
801     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
802     ret = avfilter_graph_create_filter(&ofilter->filter,
803                                        avfilter_get_by_name("buffersink"),
804                                        name, NULL, NULL/*buffersink_params*/, fg->graph);
805     av_freep(&buffersink_params);
806
807     if (ret < 0)
808         return ret;
809
810     if (codec->width || codec->height) {
811         char args[255];
812         AVFilterContext *filter;
813
814         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
815                  codec->width,
816                  codec->height,
817                  (unsigned)ost->sws_flags);
818         snprintf(name, sizeof(name), "scaler for output stream %d:%d",
819                  ost->file_index, ost->index);
820         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
821                                                 name, args, NULL, fg->graph)) < 0)
822             return ret;
823         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
824             return ret;
825
826         last_filter = filter;
827         pad_idx = 0;
828     }
829
830     if ((pix_fmts = choose_pix_fmts(ost))) {
831         AVFilterContext *filter;
832         snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
833                  ost->file_index, ost->index);
834         if ((ret = avfilter_graph_create_filter(&filter,
835                                                 avfilter_get_by_name("format"),
836                                                 "format", pix_fmts, NULL,
837                                                 fg->graph)) < 0)
838             return ret;
839         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
840             return ret;
841
842         last_filter = filter;
843         pad_idx     = 0;
844         av_freep(&pix_fmts);
845     }
846
847     if (ost->frame_rate.num && 0) {
848         AVFilterContext *fps;
849         char args[255];
850
851         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
852                  ost->frame_rate.den);
853         snprintf(name, sizeof(name), "fps for output stream %d:%d",
854                  ost->file_index, ost->index);
855         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
856                                            name, args, NULL, fg->graph);
857         if (ret < 0)
858             return ret;
859
860         ret = avfilter_link(last_filter, pad_idx, fps, 0);
861         if (ret < 0)
862             return ret;
863         last_filter = fps;
864         pad_idx = 0;
865     }
866
867     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
868         return ret;
869
870     return 0;
871 }
872
873 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
874 {
875     OutputStream *ost = ofilter->ost;
876     AVCodecContext *codec  = ost->st->codec;
877     AVFilterContext *last_filter = out->filter_ctx;
878     int pad_idx = out->pad_idx;
879     char *sample_fmts, *sample_rates, *channel_layouts;
880     char name[255];
881     int ret;
882
883
884     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
885     ret = avfilter_graph_create_filter(&ofilter->filter,
886                                        avfilter_get_by_name("abuffersink"),
887                                        name, NULL, NULL, fg->graph);
888     if (ret < 0)
889         return ret;
890
891 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
892     AVFilterContext *filt_ctx;                                              \
893                                                                             \
894     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
895            "similarly to -af " filter_name "=%s.\n", arg);                  \
896                                                                             \
897     ret = avfilter_graph_create_filter(&filt_ctx,                           \
898                                        avfilter_get_by_name(filter_name),   \
899                                        filter_name, arg, NULL, fg->graph);  \
900     if (ret < 0)                                                            \
901         return ret;                                                         \
902                                                                             \
903     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
904     if (ret < 0)                                                            \
905         return ret;                                                         \
906                                                                             \
907     last_filter = filt_ctx;                                                 \
908     pad_idx = 0;                                                            \
909 } while (0)
910     if (ost->audio_channels_mapped) {
911         int i;
912         AVBPrint pan_buf;
913         av_bprint_init(&pan_buf, 256, 8192);
914         av_bprintf(&pan_buf, "0x%"PRIx64,
915                    av_get_default_channel_layout(ost->audio_channels_mapped));
916         for (i = 0; i < ost->audio_channels_mapped; i++)
917             if (ost->audio_channels_map[i] != -1)
918                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
919
920         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
921         av_bprint_finalize(&pan_buf, NULL);
922     }
923
924     if (codec->channels && !codec->channel_layout)
925         codec->channel_layout = av_get_default_channel_layout(codec->channels);
926
927     sample_fmts     = choose_sample_fmts(ost);
928     sample_rates    = choose_sample_rates(ost);
929     channel_layouts = choose_channel_layouts(ost);
930     if (sample_fmts || sample_rates || channel_layouts) {
931         AVFilterContext *format;
932         char args[256];
933         int len = 0;
934
935         if (sample_fmts)
936             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
937                             sample_fmts);
938         if (sample_rates)
939             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
940                             sample_rates);
941         if (channel_layouts)
942             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
943                             channel_layouts);
944         args[len - 1] = 0;
945
946         av_freep(&sample_fmts);
947         av_freep(&sample_rates);
948         av_freep(&channel_layouts);
949
950         snprintf(name, sizeof(name), "audio format for output stream %d:%d",
951                  ost->file_index, ost->index);
952         ret = avfilter_graph_create_filter(&format,
953                                            avfilter_get_by_name("aformat"),
954                                            name, args, NULL, fg->graph);
955         if (ret < 0)
956             return ret;
957
958         ret = avfilter_link(last_filter, pad_idx, format, 0);
959         if (ret < 0)
960             return ret;
961
962         last_filter = format;
963         pad_idx = 0;
964     }
965
966     if (audio_volume != 256 && 0) {
967         char args[256];
968
969         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
970         AUTO_INSERT_FILTER("-vol", "volume", args);
971     }
972
973     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
974         return ret;
975
976     return 0;
977 }
978
979 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
980 {                                                                  \
981     AVFilterContext *ctx = inout->filter_ctx;                      \
982     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
983     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
984     AVIOContext *pb;                                               \
985                                                                    \
986     if (avio_open_dyn_buf(&pb) < 0)                                \
987         exit_program(1);                                           \
988                                                                    \
989     avio_printf(pb, "%s", ctx->filter->name);                      \
990     if (nb_pads > 1)                                               \
991         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
992     avio_w8(pb, 0);                                                \
993     avio_close_dyn_buf(pb, &f->name);                              \
994 }
995
996 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
997 {
998     av_freep(&ofilter->name);
999     DESCRIBE_FILTER_LINK(ofilter, out, 0);
1000
1001     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
1002     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
1003     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
1004     default: av_assert0(0);
1005     }
1006 }
1007
1008 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
1009                                         AVFilterInOut *in)
1010 {
1011     AVFilterContext *first_filter = in->filter_ctx;
1012     AVFilter *filter = avfilter_get_by_name("buffer");
1013     InputStream *ist = ifilter->ist;
1014     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1015                                                       ist->framerate.num} :
1016                                          ist->st->time_base;
1017     AVRational fr = ist->framerate.num ? ist->framerate :
1018                                          ist->st->r_frame_rate;
1019     AVRational sar;
1020     AVBPrint args;
1021     char name[255];
1022     int pad_idx = in->pad_idx;
1023     int ret;
1024
1025     sar = ist->st->sample_aspect_ratio.num ?
1026           ist->st->sample_aspect_ratio :
1027           ist->st->codec->sample_aspect_ratio;
1028     if(!sar.den)
1029         sar = (AVRational){0,1};
1030     av_bprint_init(&args, 0, 1);
1031     av_bprintf(&args,
1032              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
1033              "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
1034              ist->st->codec->height, ist->st->codec->pix_fmt,
1035              tb.num, tb.den, sar.num, sar.den,
1036              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1037     if (fr.num && fr.den)
1038         av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
1039     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1040              ist->file_index, ist->st->index);
1041
1042     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
1043                                             args.str, NULL, fg->graph)) < 0)
1044         return ret;
1045
1046     if (ist->framerate.num) {
1047         AVFilterContext *setpts;
1048
1049         snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
1050                  ist->file_index, ist->st->index);
1051         if ((ret = avfilter_graph_create_filter(&setpts,
1052                                                 avfilter_get_by_name("setpts"),
1053                                                 name, "N", NULL,
1054                                                 fg->graph)) < 0)
1055             return ret;
1056
1057         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1058             return ret;
1059
1060         first_filter = setpts;
1061         pad_idx = 0;
1062     }
1063
1064     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1065         return ret;
1066     return 0;
1067 }
1068
1069 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1070                                         AVFilterInOut *in)
1071 {
1072     AVFilterContext *first_filter = in->filter_ctx;
1073     AVFilter *filter = avfilter_get_by_name("abuffer");
1074     InputStream *ist = ifilter->ist;
1075     int pad_idx = in->pad_idx;
1076     char args[255], name[255];
1077     int ret;
1078
1079     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1080              ":channel_layout=0x%"PRIx64,
1081              1, ist->st->codec->sample_rate,
1082              ist->st->codec->sample_rate,
1083              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1084              ist->st->codec->channel_layout);
1085     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
1086              ist->file_index, ist->st->index);
1087
1088     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1089                                             name, args, NULL,
1090                                             fg->graph)) < 0)
1091         return ret;
1092
1093 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1094     AVFilterContext *filt_ctx;                                              \
1095                                                                             \
1096     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1097            "similarly to -af " filter_name "=%s.\n", arg);                  \
1098                                                                             \
1099     snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d",      \
1100                 fg->index, filter_name, ist->file_index, ist->st->index);   \
1101     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1102                                        avfilter_get_by_name(filter_name),   \
1103                                        name, arg, NULL, fg->graph);         \
1104     if (ret < 0)                                                            \
1105         return ret;                                                         \
1106                                                                             \
1107     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1108     if (ret < 0)                                                            \
1109         return ret;                                                         \
1110                                                                             \
1111     first_filter = filt_ctx;                                                  \
1112 } while (0)
1113
1114     if (audio_sync_method > 0) {
1115         char args[256] = {0};
1116
1117         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1118         if (audio_sync_method > 1)
1119             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1120         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1121     }
1122
1123 //     if (ost->audio_channels_mapped) {
1124 //         int i;
1125 //         AVBPrint pan_buf;
1126 //         av_bprint_init(&pan_buf, 256, 8192);
1127 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1128 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1129 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1130 //             if (ost->audio_channels_map[i] != -1)
1131 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1132 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1133 //         av_bprint_finalize(&pan_buf, NULL);
1134 //     }
1135
1136     if (audio_volume != 256) {
1137         char args[256];
1138
1139         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1140         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1141     }
1142     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1143         return ret;
1144
1145     return 0;
1146 }
1147
1148 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1149                                   AVFilterInOut *in)
1150 {
1151     av_freep(&ifilter->name);
1152     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1153
1154     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
1155     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1156     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1157     default: av_assert0(0);
1158     }
1159 }
1160
1161 static int configure_filtergraph(FilterGraph *fg)
1162 {
1163     AVFilterInOut *inputs, *outputs, *cur;
1164     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1165     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1166                                       fg->graph_desc;
1167
1168     avfilter_graph_free(&fg->graph);
1169     if (!(fg->graph = avfilter_graph_alloc()))
1170         return AVERROR(ENOMEM);
1171
1172     if (simple) {
1173         OutputStream *ost = fg->outputs[0]->ost;
1174         char args[255];
1175         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1176         fg->graph->scale_sws_opts = av_strdup(args);
1177     }
1178
1179     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1180         return ret;
1181
1182     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1183         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1184                "exactly one input and output.\n", graph_desc);
1185         return AVERROR(EINVAL);
1186     }
1187
1188     for (cur = inputs; !simple && init && cur; cur = cur->next)
1189         init_input_filter(fg, cur);
1190
1191     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1192         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1193             return ret;
1194     avfilter_inout_free(&inputs);
1195
1196     if (!init || simple) {
1197         /* we already know the mappings between lavfi outputs and output streams,
1198          * so we can finish the setup */
1199         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1200             configure_output_filter(fg, fg->outputs[i], cur);
1201         avfilter_inout_free(&outputs);
1202
1203         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1204             return ret;
1205     } else {
1206         /* wait until output mappings are processed */
1207         for (cur = outputs; cur;) {
1208             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1209                                      &fg->nb_outputs, fg->nb_outputs + 1);
1210             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1211                 exit_program(1);
1212             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1213             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1214             cur = cur->next;
1215             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1216         }
1217     }
1218
1219     return 0;
1220 }
1221
1222 static int configure_complex_filters(void)
1223 {
1224     int i, ret = 0;
1225
1226     for (i = 0; i < nb_filtergraphs; i++)
1227         if (!filtergraphs[i]->graph &&
1228             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1229             return ret;
1230     return 0;
1231 }
1232
1233 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1234 {
1235     int i;
1236     for (i = 0; i < fg->nb_inputs; i++)
1237         if (fg->inputs[i]->ist == ist)
1238             return 1;
1239     return 0;
1240 }
1241
1242 static void term_exit(void)
1243 {
1244     av_log(NULL, AV_LOG_QUIET, "%s", "");
1245 #if HAVE_TERMIOS_H
1246     if(restore_tty)
1247         tcsetattr (0, TCSANOW, &oldtty);
1248 #endif
1249 }
1250
1251 static volatile int received_sigterm = 0;
1252
1253 static void sigterm_handler(int sig)
1254 {
1255     received_sigterm = sig;
1256     received_nb_signals++;
1257     term_exit();
1258     if(received_nb_signals > 3)
1259         exit(123);
1260 }
1261
1262 static void term_init(void)
1263 {
1264 #if HAVE_TERMIOS_H
1265     if(!run_as_daemon){
1266         struct termios tty;
1267         int istty = 1;
1268 #if HAVE_ISATTY
1269         istty = isatty(0) && isatty(2);
1270 #endif
1271         if (istty && tcgetattr (0, &tty) == 0) {
1272             oldtty = tty;
1273             restore_tty = 1;
1274             atexit(term_exit);
1275
1276             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1277                              |INLCR|IGNCR|ICRNL|IXON);
1278             tty.c_oflag |= OPOST;
1279             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1280             tty.c_cflag &= ~(CSIZE|PARENB);
1281             tty.c_cflag |= CS8;
1282             tty.c_cc[VMIN] = 1;
1283             tty.c_cc[VTIME] = 0;
1284
1285             tcsetattr (0, TCSANOW, &tty);
1286         }
1287         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1288     }
1289 #endif
1290     avformat_network_deinit();
1291
1292     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1293     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1294 #ifdef SIGXCPU
1295     signal(SIGXCPU, sigterm_handler);
1296 #endif
1297 }
1298
1299 /* read a key without blocking */
1300 static int read_key(void)
1301 {
1302     unsigned char ch;
1303 #if HAVE_TERMIOS_H
1304     int n = 1;
1305     struct timeval tv;
1306     fd_set rfds;
1307
1308     FD_ZERO(&rfds);
1309     FD_SET(0, &rfds);
1310     tv.tv_sec = 0;
1311     tv.tv_usec = 0;
1312     n = select(1, &rfds, NULL, NULL, &tv);
1313     if (n > 0) {
1314         n = read(0, &ch, 1);
1315         if (n == 1)
1316             return ch;
1317
1318         return n;
1319     }
1320 #elif HAVE_KBHIT
1321 #    if HAVE_PEEKNAMEDPIPE
1322     static int is_pipe;
1323     static HANDLE input_handle;
1324     DWORD dw, nchars;
1325     if(!input_handle){
1326         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1327         is_pipe = !GetConsoleMode(input_handle, &dw);
1328     }
1329
1330     if (stdin->_cnt > 0) {
1331         read(0, &ch, 1);
1332         return ch;
1333     }
1334     if (is_pipe) {
1335         /* When running under a GUI, you will end here. */
1336         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1337             return -1;
1338         //Read it
1339         if(nchars != 0) {
1340             read(0, &ch, 1);
1341             return ch;
1342         }else{
1343             return -1;
1344         }
1345     }
1346 #    endif
1347     if(kbhit())
1348         return(getch());
1349 #endif
1350     return -1;
1351 }
1352
1353 static int decode_interrupt_cb(void *ctx)
1354 {
1355     return received_nb_signals > 1;
1356 }
1357
1358 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1359
1360 void av_noreturn exit_program(int ret)
1361 {
1362     int i, j;
1363
1364     for (i = 0; i < nb_filtergraphs; i++) {
1365         avfilter_graph_free(&filtergraphs[i]->graph);
1366         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1367             av_freep(&filtergraphs[i]->inputs[j]->name);
1368             av_freep(&filtergraphs[i]->inputs[j]);
1369         }
1370         av_freep(&filtergraphs[i]->inputs);
1371         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1372             av_freep(&filtergraphs[i]->outputs[j]->name);
1373             av_freep(&filtergraphs[i]->outputs[j]);
1374         }
1375         av_freep(&filtergraphs[i]->outputs);
1376         av_freep(&filtergraphs[i]);
1377     }
1378     av_freep(&filtergraphs);
1379
1380     av_freep(&subtitle_out);
1381
1382     /* close files */
1383     for (i = 0; i < nb_output_files; i++) {
1384         AVFormatContext *s = output_files[i]->ctx;
1385         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1386             avio_close(s->pb);
1387         avformat_free_context(s);
1388         av_dict_free(&output_files[i]->opts);
1389         av_freep(&output_files[i]);
1390     }
1391     for (i = 0; i < nb_output_streams; i++) {
1392         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1393         while (bsfc) {
1394             AVBitStreamFilterContext *next = bsfc->next;
1395             av_bitstream_filter_close(bsfc);
1396             bsfc = next;
1397         }
1398         output_streams[i]->bitstream_filters = NULL;
1399
1400         av_freep(&output_streams[i]->forced_keyframes);
1401         av_freep(&output_streams[i]->filtered_frame);
1402         av_freep(&output_streams[i]->avfilter);
1403         av_freep(&output_streams[i]);
1404     }
1405     for (i = 0; i < nb_input_files; i++) {
1406         avformat_close_input(&input_files[i]->ctx);
1407         av_freep(&input_files[i]);
1408     }
1409     for (i = 0; i < nb_input_streams; i++) {
1410         av_freep(&input_streams[i]->decoded_frame);
1411         av_dict_free(&input_streams[i]->opts);
1412         free_buffer_pool(&input_streams[i]->buffer_pool);
1413         av_freep(&input_streams[i]->filters);
1414         av_freep(&input_streams[i]);
1415     }
1416
1417     if (vstats_file)
1418         fclose(vstats_file);
1419     av_free(vstats_filename);
1420
1421     av_freep(&input_streams);
1422     av_freep(&input_files);
1423     av_freep(&output_streams);
1424     av_freep(&output_files);
1425
1426     uninit_opts();
1427
1428     avfilter_uninit();
1429     avformat_network_deinit();
1430
1431     if (received_sigterm) {
1432         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1433                (int) received_sigterm);
1434         exit (255);
1435     }
1436
1437     exit(ret);
1438 }
1439
1440 static void assert_avoptions(AVDictionary *m)
1441 {
1442     AVDictionaryEntry *t;
1443     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1444         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1445         exit_program(1);
1446     }
1447 }
1448
1449 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1450 {
1451     const char *codec_string = encoder ? "encoder" : "decoder";
1452     AVCodec *codec;
1453     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1454         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1455         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1456                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1457                 codec_string, c->codec->name);
1458         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1459         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1460             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1461                    codec_string, codec->name);
1462         exit_program(1);
1463     }
1464 }
1465
1466 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1467 {
1468     if (codec && codec->sample_fmts) {
1469         const enum AVSampleFormat *p = codec->sample_fmts;
1470         for (; *p != -1; p++) {
1471             if (*p == st->codec->sample_fmt)
1472                 break;
1473         }
1474         if (*p == -1) {
1475             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1476                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1477             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1478             av_log(NULL, AV_LOG_WARNING,
1479                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1480                    av_get_sample_fmt_name(st->codec->sample_fmt),
1481                    codec->name,
1482                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1483             st->codec->sample_fmt = codec->sample_fmts[0];
1484         }
1485     }
1486 }
1487
1488 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1489 {
1490     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1491     AVCodecContext          *avctx = ost->st->codec;
1492     int ret;
1493
1494     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1495         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1496         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1497
1498     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1499         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1500         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1501             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1502             pkt->pts = pkt->dts = max;
1503         }
1504     }
1505
1506     /*
1507      * Audio encoders may split the packets --  #frames in != #packets out.
1508      * But there is no reordering, so we can limit the number of output packets
1509      * by simply dropping them here.
1510      * Counting encoded video frames needs to be done separately because of
1511      * reordering, see do_video_out()
1512      */
1513     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1514         if (ost->frame_number >= ost->max_frames) {
1515             av_free_packet(pkt);
1516             return;
1517         }
1518         ost->frame_number++;
1519     }
1520
1521     while (bsfc) {
1522         AVPacket new_pkt = *pkt;
1523         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1524                                            &new_pkt.data, &new_pkt.size,
1525                                            pkt->data, pkt->size,
1526                                            pkt->flags & AV_PKT_FLAG_KEY);
1527         if (a > 0) {
1528             av_free_packet(pkt);
1529             new_pkt.destruct = av_destruct_packet;
1530         } else if (a < 0) {
1531             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1532                    bsfc->filter->name, pkt->stream_index,
1533                    avctx->codec ? avctx->codec->name : "copy");
1534             print_error("", a);
1535             if (exit_on_error)
1536                 exit_program(1);
1537         }
1538         *pkt = new_pkt;
1539
1540         bsfc = bsfc->next;
1541     }
1542
1543     pkt->stream_index = ost->index;
1544     ret = av_interleaved_write_frame(s, pkt);
1545     if (ret < 0) {
1546         print_error("av_interleaved_write_frame()", ret);
1547         exit_program(1);
1548     }
1549 }
1550
1551 static int check_recording_time(OutputStream *ost)
1552 {
1553     OutputFile *of = output_files[ost->file_index];
1554
1555     if (of->recording_time != INT64_MAX &&
1556         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1557                       AV_TIME_BASE_Q) >= 0) {
1558         ost->is_past_recording_time = 1;
1559         return 0;
1560     }
1561     return 1;
1562 }
1563
1564 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1565                          AVFrame *frame)
1566 {
1567     AVCodecContext *enc = ost->st->codec;
1568     AVPacket pkt;
1569     int got_packet = 0;
1570
1571     av_init_packet(&pkt);
1572     pkt.data = NULL;
1573     pkt.size = 0;
1574
1575     if (!check_recording_time(ost))
1576         return;
1577
1578     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1579         frame->pts = ost->sync_opts;
1580     ost->sync_opts = frame->pts + frame->nb_samples;
1581
1582     av_assert0(pkt.size || !pkt.data);
1583     update_benchmark(NULL);
1584     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1585         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1586         exit_program(1);
1587     }
1588     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1589
1590     if (got_packet) {
1591         if (pkt.pts != AV_NOPTS_VALUE)
1592             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1593         if (pkt.dts != AV_NOPTS_VALUE)
1594             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1595         if (pkt.duration > 0)
1596             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1597
1598         if (debug_ts) {
1599             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1600                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1601                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1602                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1603         }
1604
1605         write_frame(s, &pkt, ost);
1606
1607         audio_size += pkt.size;
1608         av_free_packet(&pkt);
1609     }
1610 }
1611
1612 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1613 {
1614     AVCodecContext *dec;
1615     AVPicture *picture2;
1616     AVPicture picture_tmp;
1617     uint8_t *buf = 0;
1618
1619     dec = ist->st->codec;
1620
1621     /* deinterlace : must be done before any resize */
1622     if (do_deinterlace) {
1623         int size;
1624
1625         /* create temporary picture */
1626         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1627         buf  = av_malloc(size);
1628         if (!buf)
1629             return;
1630
1631         picture2 = &picture_tmp;
1632         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1633
1634         if (avpicture_deinterlace(picture2, picture,
1635                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1636             /* if error, do not deinterlace */
1637             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1638             av_free(buf);
1639             buf = NULL;
1640             picture2 = picture;
1641         }
1642     } else {
1643         picture2 = picture;
1644     }
1645
1646     if (picture != picture2)
1647         *picture = *picture2;
1648     *bufp = buf;
1649 }
1650
1651 static void do_subtitle_out(AVFormatContext *s,
1652                             OutputStream *ost,
1653                             InputStream *ist,
1654                             AVSubtitle *sub,
1655                             int64_t pts)
1656 {
1657     int subtitle_out_max_size = 1024 * 1024;
1658     int subtitle_out_size, nb, i;
1659     AVCodecContext *enc;
1660     AVPacket pkt;
1661
1662     if (pts == AV_NOPTS_VALUE) {
1663         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1664         if (exit_on_error)
1665             exit_program(1);
1666         return;
1667     }
1668
1669     enc = ost->st->codec;
1670
1671     if (!subtitle_out) {
1672         subtitle_out = av_malloc(subtitle_out_max_size);
1673     }
1674
1675     /* Note: DVB subtitle need one packet to draw them and one other
1676        packet to clear them */
1677     /* XXX: signal it in the codec context ? */
1678     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1679         nb = 2;
1680     else
1681         nb = 1;
1682
1683     for (i = 0; i < nb; i++) {
1684         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1685         if (!check_recording_time(ost))
1686             return;
1687
1688         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1689         // start_display_time is required to be 0
1690         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1691         sub->end_display_time  -= sub->start_display_time;
1692         sub->start_display_time = 0;
1693         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1694                                                     subtitle_out_max_size, sub);
1695         if (subtitle_out_size < 0) {
1696             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1697             exit_program(1);
1698         }
1699
1700         av_init_packet(&pkt);
1701         pkt.data = subtitle_out;
1702         pkt.size = subtitle_out_size;
1703         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1704         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
1705         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1706             /* XXX: the pts correction is handled here. Maybe handling
1707                it in the codec would be better */
1708             if (i == 0)
1709                 pkt.pts += 90 * sub->start_display_time;
1710             else
1711                 pkt.pts += 90 * sub->end_display_time;
1712         }
1713         write_frame(s, &pkt, ost);
1714         subtitle_size += pkt.size;
1715     }
1716 }
1717
1718 static void do_video_out(AVFormatContext *s,
1719                          OutputStream *ost,
1720                          AVFrame *in_picture,
1721                          float quality)
1722 {
1723     int ret, format_video_sync;
1724     AVPacket pkt;
1725     AVCodecContext *enc = ost->st->codec;
1726     int nb_frames, i;
1727     double sync_ipts, delta;
1728     double duration = 0;
1729     int frame_size = 0;
1730     InputStream *ist = NULL;
1731
1732     if (ost->source_index >= 0)
1733         ist = input_streams[ost->source_index];
1734
1735     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1736         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1737
1738     sync_ipts = in_picture->pts;
1739     delta = sync_ipts - ost->sync_opts + duration;
1740
1741     /* by default, we output a single frame */
1742     nb_frames = 1;
1743
1744     format_video_sync = video_sync_method;
1745     if (format_video_sync == VSYNC_AUTO)
1746         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1747
1748     switch (format_video_sync) {
1749     case VSYNC_CFR:
1750         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1751         if (delta < -1.1)
1752             nb_frames = 0;
1753         else if (delta > 1.1)
1754             nb_frames = lrintf(delta);
1755         break;
1756     case VSYNC_VFR:
1757         if (delta <= -0.6)
1758             nb_frames = 0;
1759         else if (delta > 0.6)
1760             ost->sync_opts = lrint(sync_ipts);
1761         break;
1762     case VSYNC_DROP:
1763     case VSYNC_PASSTHROUGH:
1764         ost->sync_opts = lrint(sync_ipts);
1765         break;
1766     default:
1767         av_assert0(0);
1768     }
1769
1770     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1771     if (nb_frames == 0) {
1772         nb_frames_drop++;
1773         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1774         return;
1775     } else if (nb_frames > 1) {
1776         if (nb_frames > dts_error_threshold * 30) {
1777             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
1778             nb_frames_drop++;
1779             return;
1780         }
1781         nb_frames_dup += nb_frames - 1;
1782         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1783     }
1784
1785   /* duplicates frame if needed */
1786   for (i = 0; i < nb_frames; i++) {
1787     av_init_packet(&pkt);
1788     pkt.data = NULL;
1789     pkt.size = 0;
1790
1791     in_picture->pts = ost->sync_opts;
1792
1793     if (!check_recording_time(ost))
1794         return;
1795
1796     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1797         enc->codec->id == CODEC_ID_RAWVIDEO) {
1798         /* raw pictures are written as AVPicture structure to
1799            avoid any copies. We support temporarily the older
1800            method. */
1801         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1802         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1803         pkt.data   = (uint8_t *)in_picture;
1804         pkt.size   =  sizeof(AVPicture);
1805         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1806         pkt.flags |= AV_PKT_FLAG_KEY;
1807
1808         write_frame(s, &pkt, ost);
1809         video_size += pkt.size;
1810     } else {
1811         int got_packet;
1812         AVFrame big_picture;
1813
1814         big_picture = *in_picture;
1815         /* better than nothing: use input picture interlaced
1816            settings */
1817         big_picture.interlaced_frame = in_picture->interlaced_frame;
1818         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1819             if (ost->top_field_first == -1)
1820                 big_picture.top_field_first = in_picture->top_field_first;
1821             else
1822                 big_picture.top_field_first = !!ost->top_field_first;
1823         }
1824
1825         /* handles same_quant here. This is not correct because it may
1826            not be a global option */
1827         big_picture.quality = quality;
1828         if (!enc->me_threshold)
1829             big_picture.pict_type = 0;
1830         if (ost->forced_kf_index < ost->forced_kf_count &&
1831             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1832             big_picture.pict_type = AV_PICTURE_TYPE_I;
1833             ost->forced_kf_index++;
1834         }
1835         update_benchmark(NULL);
1836         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1837         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1838         if (ret < 0) {
1839             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1840             exit_program(1);
1841         }
1842
1843         if (got_packet) {
1844             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1845                 pkt.pts = ost->sync_opts;
1846
1847             if (pkt.pts != AV_NOPTS_VALUE)
1848                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1849             if (pkt.dts != AV_NOPTS_VALUE)
1850                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1851
1852             if (debug_ts) {
1853                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1854                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1855                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1856                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1857             }
1858
1859             write_frame(s, &pkt, ost);
1860             frame_size = pkt.size;
1861             video_size += pkt.size;
1862             av_free_packet(&pkt);
1863
1864             /* if two pass, output log */
1865             if (ost->logfile && enc->stats_out) {
1866                 fprintf(ost->logfile, "%s", enc->stats_out);
1867             }
1868         }
1869     }
1870     ost->sync_opts++;
1871     /*
1872      * For video, number of frames in == number of packets out.
1873      * But there may be reordering, so we can't throw away frames on encoder
1874      * flush, we need to limit them here, before they go into encoder.
1875      */
1876     ost->frame_number++;
1877   }
1878
1879     if (vstats_filename && frame_size)
1880         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1881 }
1882
1883 static double psnr(double d)
1884 {
1885     return -10.0 * log(d) / log(10.0);
1886 }
1887
1888 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1889                            int frame_size)
1890 {
1891     AVCodecContext *enc;
1892     int frame_number;
1893     double ti1, bitrate, avg_bitrate;
1894
1895     /* this is executed just the first time do_video_stats is called */
1896     if (!vstats_file) {
1897         vstats_file = fopen(vstats_filename, "w");
1898         if (!vstats_file) {
1899             perror("fopen");
1900             exit_program(1);
1901         }
1902     }
1903
1904     enc = ost->st->codec;
1905     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1906         frame_number = ost->frame_number;
1907         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1908         if (enc->flags&CODEC_FLAG_PSNR)
1909             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1910
1911         fprintf(vstats_file,"f_size= %6d ", frame_size);
1912         /* compute pts value */
1913         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1914         if (ti1 < 0.01)
1915             ti1 = 0.01;
1916
1917         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1918         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1919         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1920                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1921         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1922     }
1923 }
1924
1925 /* check for new output on any of the filtergraphs */
1926 static int poll_filters(void)
1927 {
1928     AVFilterBufferRef *picref;
1929     AVFrame *filtered_frame = NULL;
1930     int i, ret, ret_all;
1931     unsigned nb_success, nb_eof;
1932     int64_t frame_pts;
1933
1934     while (1) {
1935         /* Reap all buffers present in the buffer sinks */
1936         for (i = 0; i < nb_output_streams; i++) {
1937             OutputStream *ost = output_streams[i];
1938             OutputFile    *of = output_files[ost->file_index];
1939             int ret = 0;
1940
1941             if (!ost->filter)
1942                 continue;
1943
1944             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1945                 return AVERROR(ENOMEM);
1946             } else
1947                 avcodec_get_frame_defaults(ost->filtered_frame);
1948             filtered_frame = ost->filtered_frame;
1949
1950             while (1) {
1951                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1952                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
1953                 if (ret < 0) {
1954                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1955                         char buf[256];
1956                         av_strerror(ret, buf, sizeof(buf));
1957                         av_log(NULL, AV_LOG_WARNING,
1958                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1959                     }
1960                     break;
1961                 }
1962                 frame_pts = AV_NOPTS_VALUE;
1963                 if (picref->pts != AV_NOPTS_VALUE) {
1964                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1965                                                     ost->filter->filter->inputs[0]->time_base,
1966                                                     ost->st->codec->time_base) -
1967                                         av_rescale_q(of->start_time,
1968                                                     AV_TIME_BASE_Q,
1969                                                     ost->st->codec->time_base);
1970
1971                     if (of->start_time && filtered_frame->pts < 0) {
1972                         avfilter_unref_buffer(picref);
1973                         continue;
1974                     }
1975                 }
1976                 //if (ost->source_index >= 0)
1977                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1978
1979
1980                 switch (ost->filter->filter->inputs[0]->type) {
1981                 case AVMEDIA_TYPE_VIDEO:
1982                     avfilter_copy_buf_props(filtered_frame, picref);
1983                     filtered_frame->pts = frame_pts;
1984                     if (!ost->frame_aspect_ratio)
1985                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1986
1987                     do_video_out(of->ctx, ost, filtered_frame,
1988                                  same_quant ? ost->last_quality :
1989                                               ost->st->codec->global_quality);
1990                     break;
1991                 case AVMEDIA_TYPE_AUDIO:
1992                     avfilter_copy_buf_props(filtered_frame, picref);
1993                     filtered_frame->pts = frame_pts;
1994                     do_audio_out(of->ctx, ost, filtered_frame);
1995                     break;
1996                 default:
1997                     // TODO support subtitle filters
1998                     av_assert0(0);
1999                 }
2000
2001                 avfilter_unref_buffer(picref);
2002             }
2003         }
2004         /* Request frames through all the graphs */
2005         ret_all = nb_success = nb_eof = 0;
2006         for (i = 0; i < nb_filtergraphs; i++) {
2007             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2008             if (!ret) {
2009                 nb_success++;
2010             } else if (ret == AVERROR_EOF) {
2011                 nb_eof++;
2012             } else if (ret != AVERROR(EAGAIN)) {
2013                 char buf[256];
2014                 av_strerror(ret, buf, sizeof(buf));
2015                 av_log(NULL, AV_LOG_WARNING,
2016                        "Error in request_frame(): %s\n", buf);
2017                 ret_all = ret;
2018             }
2019         }
2020         if (!nb_success)
2021             break;
2022         /* Try again if anything succeeded */
2023     }
2024     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2025 }
2026
2027 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2028 {
2029     char buf[1024];
2030     AVBPrint buf_script;
2031     OutputStream *ost;
2032     AVFormatContext *oc;
2033     int64_t total_size;
2034     AVCodecContext *enc;
2035     int frame_number, vid, i;
2036     double bitrate;
2037     int64_t pts = INT64_MAX;
2038     static int64_t last_time = -1;
2039     static int qp_histogram[52];
2040     int hours, mins, secs, us;
2041
2042     if (!print_stats && !is_last_report && !progress_avio)
2043         return;
2044
2045     if (!is_last_report) {
2046         if (last_time == -1) {
2047             last_time = cur_time;
2048             return;
2049         }
2050         if ((cur_time - last_time) < 500000)
2051             return;
2052         last_time = cur_time;
2053     }
2054
2055
2056     oc = output_files[0]->ctx;
2057
2058     total_size = avio_size(oc->pb);
2059     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2060         total_size = avio_tell(oc->pb);
2061         if (total_size < 0)
2062             total_size = 0;
2063     }
2064
2065     buf[0] = '\0';
2066     vid = 0;
2067     av_bprint_init(&buf_script, 0, 1);
2068     for (i = 0; i < nb_output_streams; i++) {
2069         float q = -1;
2070         ost = output_streams[i];
2071         enc = ost->st->codec;
2072         if (!ost->stream_copy && enc->coded_frame)
2073             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2074         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2075             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2076             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2077                        ost->file_index, ost->index, q);
2078         }
2079         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2080             float fps, t = (cur_time-timer_start) / 1000000.0;
2081
2082             frame_number = ost->frame_number;
2083             fps = t > 1 ? frame_number / t : 0;
2084             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2085                      frame_number, fps < 9.95, fps, q);
2086             av_bprintf(&buf_script, "frame=%d\n", frame_number);
2087             av_bprintf(&buf_script, "fps=%.1f\n", fps);
2088             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
2089                        ost->file_index, ost->index, q);
2090             if (is_last_report)
2091                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2092             if (qp_hist) {
2093                 int j;
2094                 int qp = lrintf(q);
2095                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2096                     qp_histogram[qp]++;
2097                 for (j = 0; j < 32; j++)
2098                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2099             }
2100             if (enc->flags&CODEC_FLAG_PSNR) {
2101                 int j;
2102                 double error, error_sum = 0;
2103                 double scale, scale_sum = 0;
2104                 double p;
2105                 char type[3] = { 'Y','U','V' };
2106                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2107                 for (j = 0; j < 3; j++) {
2108                     if (is_last_report) {
2109                         error = enc->error[j];
2110                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2111                     } else {
2112                         error = enc->coded_frame->error[j];
2113                         scale = enc->width * enc->height * 255.0 * 255.0;
2114                     }
2115                     if (j)
2116                         scale /= 4;
2117                     error_sum += error;
2118                     scale_sum += scale;
2119                     p = psnr(error / scale);
2120                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
2121                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
2122                                ost->file_index, ost->index, type[i] | 32, p);
2123                 }
2124                 p = psnr(error_sum / scale_sum);
2125                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2126                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
2127                            ost->file_index, ost->index, p);
2128             }
2129             vid = 1;
2130         }
2131         /* compute min output value */
2132         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2133                                       ost->st->time_base, AV_TIME_BASE_Q));
2134     }
2135
2136     secs = pts / AV_TIME_BASE;
2137     us = pts % AV_TIME_BASE;
2138     mins = secs / 60;
2139     secs %= 60;
2140     hours = mins / 60;
2141     mins %= 60;
2142
2143     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2144
2145     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2146              "size=%8.0fkB time=", total_size / 1024.0);
2147     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2148              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2149              (100 * us) / AV_TIME_BASE);
2150     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2151              "bitrate=%6.1fkbits/s", bitrate);
2152     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
2153     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
2154     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
2155                hours, mins, secs, us);
2156
2157     if (nb_frames_dup || nb_frames_drop)
2158         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2159                 nb_frames_dup, nb_frames_drop);
2160     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
2161     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
2162
2163     if (print_stats || is_last_report) {
2164     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2165
2166     fflush(stderr);
2167     }
2168
2169     if (progress_avio) {
2170         av_bprintf(&buf_script, "progress=%s\n",
2171                    is_last_report ? "end" : "continue");
2172         avio_write(progress_avio, buf_script.str,
2173                    FFMIN(buf_script.len, buf_script.size - 1));
2174         avio_flush(progress_avio);
2175         av_bprint_finalize(&buf_script, NULL);
2176         if (is_last_report) {
2177             avio_close(progress_avio);
2178             progress_avio = NULL;
2179         }
2180     }
2181
2182     if (is_last_report) {
2183         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
2184         av_log(NULL, AV_LOG_INFO, "\n");
2185         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
2186                video_size / 1024.0,
2187                audio_size / 1024.0,
2188                subtitle_size / 1024.0,
2189                extra_size / 1024.0,
2190                100.0 * (total_size - raw) / raw
2191         );
2192         if(video_size + audio_size + subtitle_size + extra_size == 0){
2193             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2194         }
2195     }
2196 }
2197
2198 static void flush_encoders(void)
2199 {
2200     int i, ret;
2201
2202     for (i = 0; i < nb_output_streams; i++) {
2203         OutputStream   *ost = output_streams[i];
2204         AVCodecContext *enc = ost->st->codec;
2205         AVFormatContext *os = output_files[ost->file_index]->ctx;
2206         int stop_encoding = 0;
2207
2208         if (!ost->encoding_needed)
2209             continue;
2210
2211         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2212             continue;
2213         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2214             continue;
2215
2216         for (;;) {
2217             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2218             const char *desc;
2219             int64_t *size;
2220
2221             switch (ost->st->codec->codec_type) {
2222             case AVMEDIA_TYPE_AUDIO:
2223                 encode = avcodec_encode_audio2;
2224                 desc   = "Audio";
2225                 size   = &audio_size;
2226                 break;
2227             case AVMEDIA_TYPE_VIDEO:
2228                 encode = avcodec_encode_video2;
2229                 desc   = "Video";
2230                 size   = &video_size;
2231                 break;
2232             default:
2233                 stop_encoding = 1;
2234             }
2235
2236             if (encode) {
2237                 AVPacket pkt;
2238                 int got_packet;
2239                 av_init_packet(&pkt);
2240                 pkt.data = NULL;
2241                 pkt.size = 0;
2242
2243                 update_benchmark(NULL);
2244                 ret = encode(enc, &pkt, NULL, &got_packet);
2245                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2246                 if (ret < 0) {
2247                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2248                     exit_program(1);
2249                 }
2250                 *size += pkt.size;
2251                 if (ost->logfile && enc->stats_out) {
2252                     fprintf(ost->logfile, "%s", enc->stats_out);
2253                 }
2254                 if (!got_packet) {
2255                     stop_encoding = 1;
2256                     break;
2257                 }
2258                 if (pkt.pts != AV_NOPTS_VALUE)
2259                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2260                 if (pkt.dts != AV_NOPTS_VALUE)
2261                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2262                 write_frame(os, &pkt, ost);
2263             }
2264
2265             if (stop_encoding)
2266                 break;
2267         }
2268     }
2269 }
2270
2271 /*
2272  * Check whether a packet from ist should be written into ost at this time
2273  */
2274 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2275 {
2276     OutputFile *of = output_files[ost->file_index];
2277     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2278
2279     if (ost->source_index != ist_index)
2280         return 0;
2281
2282     if (of->start_time && ist->pts < of->start_time)
2283         return 0;
2284
2285     return 1;
2286 }
2287
2288 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2289 {
2290     OutputFile *of = output_files[ost->file_index];
2291     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2292     AVPicture pict;
2293     AVPacket opkt;
2294
2295     av_init_packet(&opkt);
2296
2297     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2298         !ost->copy_initial_nonkeyframes)
2299         return;
2300
2301     if (of->recording_time != INT64_MAX &&
2302         ist->pts >= of->recording_time + of->start_time) {
2303         ost->is_past_recording_time = 1;
2304         return;
2305     }
2306
2307     /* force the input stream PTS */
2308     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2309         audio_size += pkt->size;
2310     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2311         video_size += pkt->size;
2312         ost->sync_opts++;
2313     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2314         subtitle_size += pkt->size;
2315     }
2316
2317     if (pkt->pts != AV_NOPTS_VALUE)
2318         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2319     else
2320         opkt.pts = AV_NOPTS_VALUE;
2321
2322     if (pkt->dts == AV_NOPTS_VALUE)
2323         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2324     else
2325         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2326     opkt.dts -= ost_tb_start_time;
2327
2328     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2329     opkt.flags    = pkt->flags;
2330
2331     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2332     if (  ost->st->codec->codec_id != CODEC_ID_H264
2333        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2334        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2335        && ost->st->codec->codec_id != CODEC_ID_VC1
2336        ) {
2337         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2338             opkt.destruct = av_destruct_packet;
2339     } else {
2340         opkt.data = pkt->data;
2341         opkt.size = pkt->size;
2342     }
2343     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2344         /* store AVPicture in AVPacket, as expected by the output format */
2345         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2346         opkt.data = (uint8_t *)&pict;
2347         opkt.size = sizeof(AVPicture);
2348         opkt.flags |= AV_PKT_FLAG_KEY;
2349     }
2350
2351     write_frame(of->ctx, &opkt, ost);
2352     ost->st->codec->frame_number++;
2353     av_free_packet(&opkt);
2354 }
2355
2356 static void rate_emu_sleep(InputStream *ist)
2357 {
2358     if (input_files[ist->file_index]->rate_emu) {
2359         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2360         int64_t now = av_gettime() - ist->start;
2361         if (pts > now)
2362             av_usleep(pts - now);
2363     }
2364 }
2365
2366 static int guess_input_channel_layout(InputStream *ist)
2367 {
2368     AVCodecContext *dec = ist->st->codec;
2369
2370     if (!dec->channel_layout) {
2371         char layout_name[256];
2372
2373         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2374         if (!dec->channel_layout)
2375             return 0;
2376         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2377                                      dec->channels, dec->channel_layout);
2378         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2379                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2380     }
2381     return 1;
2382 }
2383
2384 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2385 {
2386     AVFrame *decoded_frame;
2387     AVCodecContext *avctx = ist->st->codec;
2388     int i, ret, resample_changed;
2389
2390     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2391         return AVERROR(ENOMEM);
2392     else
2393         avcodec_get_frame_defaults(ist->decoded_frame);
2394     decoded_frame = ist->decoded_frame;
2395     av_codec_set_pkt_timebase(avctx, ist->st->time_base);
2396
2397     update_benchmark(NULL);
2398     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2399     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2400     if (ret < 0) {
2401         return ret;
2402     }
2403     if (avctx->sample_rate <= 0) {
2404         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2405         return AVERROR_INVALIDDATA;
2406     }
2407
2408     if (!*got_output) {
2409         /* no audio frame */
2410         if (!pkt->size)
2411             for (i = 0; i < ist->nb_filters; i++)
2412                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2413                                      AV_BUFFERSRC_FLAG_NO_COPY);
2414         return ret;
2415     }
2416
2417     /* if the decoder provides a pts, use it instead of the last packet pts.
2418        the decoder could be delaying output by a packet or more. */
2419     if (decoded_frame->pts != AV_NOPTS_VALUE)
2420         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2421     else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
2422         decoded_frame->pts = decoded_frame->pkt_pts;
2423         pkt->pts           = AV_NOPTS_VALUE;
2424     } else if (pkt->pts != AV_NOPTS_VALUE) {
2425         decoded_frame->pts = pkt->pts;
2426         pkt->pts           = AV_NOPTS_VALUE;
2427     }else
2428         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2429
2430
2431 #if 1
2432     /* increment next_dts to use for the case where the input stream does not
2433        have timestamps or there are multiple frames in the packet */
2434     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2435                      avctx->sample_rate;
2436     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2437                      avctx->sample_rate;
2438 #endif
2439
2440     rate_emu_sleep(ist);
2441
2442     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2443                        ist->resample_channels       != avctx->channels               ||
2444                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2445                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2446     if (resample_changed) {
2447         char layout1[64], layout2[64];
2448
2449         if (!guess_input_channel_layout(ist)) {
2450             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2451                    "layout for Input Stream #%d.%d\n", ist->file_index,
2452                    ist->st->index);
2453             exit_program(1);
2454         }
2455         decoded_frame->channel_layout = avctx->channel_layout;
2456
2457         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2458                                      ist->resample_channel_layout);
2459         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2460                                      decoded_frame->channel_layout);
2461
2462         av_log(NULL, AV_LOG_INFO,
2463                "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",
2464                ist->file_index, ist->st->index,
2465                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2466                ist->resample_channels, layout1,
2467                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2468                avctx->channels, layout2);
2469
2470         ist->resample_sample_fmt     = decoded_frame->format;
2471         ist->resample_sample_rate    = decoded_frame->sample_rate;
2472         ist->resample_channel_layout = decoded_frame->channel_layout;
2473         ist->resample_channels       = avctx->channels;
2474
2475         for (i = 0; i < nb_filtergraphs; i++)
2476             if (ist_in_filtergraph(filtergraphs[i], ist)) {
2477                 FilterGraph *fg = filtergraphs[i];
2478                 int j;
2479                 if (configure_filtergraph(fg) < 0) {
2480                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2481                     exit_program(1);
2482                 }
2483                 for (j = 0; j < fg->nb_outputs; j++) {
2484                     OutputStream *ost = fg->outputs[j]->ost;
2485                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2486                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2487                         av_buffersink_set_frame_size(ost->filter->filter,
2488                                                      ost->st->codec->frame_size);
2489                 }
2490             }
2491     }
2492
2493     if (decoded_frame->pts != AV_NOPTS_VALUE)
2494         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
2495                                           ist->st->time_base,
2496                                           (AVRational){1, ist->st->codec->sample_rate});
2497     for (i = 0; i < ist->nb_filters; i++)
2498         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2499
2500     return ret;
2501 }
2502
2503 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2504 {
2505     AVFrame *decoded_frame;
2506     void *buffer_to_free = NULL;
2507     int i, ret = 0, resample_changed;
2508     int64_t best_effort_timestamp;
2509     AVRational *frame_sample_aspect;
2510     float quality;
2511
2512     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2513         return AVERROR(ENOMEM);
2514     else
2515         avcodec_get_frame_defaults(ist->decoded_frame);
2516     decoded_frame = ist->decoded_frame;
2517     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2518     av_codec_set_pkt_timebase(ist->st->codec, ist->st->time_base);
2519
2520     update_benchmark(NULL);
2521     ret = avcodec_decode_video2(ist->st->codec,
2522                                 decoded_frame, got_output, pkt);
2523     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2524     if (ret < 0)
2525         return ret;
2526
2527     quality = same_quant ? decoded_frame->quality : 0;
2528     if (!*got_output) {
2529         /* no picture yet */
2530         if (!pkt->size)
2531             for (i = 0; i < ist->nb_filters; i++)
2532                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2533         return ret;
2534     }
2535
2536     if(ist->top_field_first>=0)
2537         decoded_frame->top_field_first = ist->top_field_first;
2538
2539     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2540     if(best_effort_timestamp != AV_NOPTS_VALUE)
2541         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2542
2543     if (debug_ts) {
2544         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2545                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
2546                 ist->st->index, av_ts2str(decoded_frame->pts),
2547                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2548                 best_effort_timestamp,
2549                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2550                 decoded_frame->key_frame, decoded_frame->pict_type);
2551     }
2552
2553     pkt->size = 0;
2554     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2555
2556     rate_emu_sleep(ist);
2557
2558     if (ist->st->sample_aspect_ratio.num)
2559         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2560
2561     resample_changed = ist->resample_width   != decoded_frame->width  ||
2562                        ist->resample_height  != decoded_frame->height ||
2563                        ist->resample_pix_fmt != decoded_frame->format;
2564     if (resample_changed) {
2565         av_log(NULL, AV_LOG_INFO,
2566                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2567                ist->file_index, ist->st->index,
2568                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2569                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2570
2571         ist->resample_width   = decoded_frame->width;
2572         ist->resample_height  = decoded_frame->height;
2573         ist->resample_pix_fmt = decoded_frame->format;
2574
2575         for (i = 0; i < nb_filtergraphs; i++)
2576             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2577                 configure_filtergraph(filtergraphs[i]) < 0) {
2578                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2579                 exit_program(1);
2580             }
2581     }
2582
2583     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2584     for (i = 0; i < ist->nb_filters; i++) {
2585         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2586                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2587                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2588         // XXX what an ugly hack
2589         if (ist->filters[i]->graph->nb_outputs == 1)
2590             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2591
2592         if (!frame_sample_aspect->num)
2593             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2594         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2595             FrameBuffer      *buf = decoded_frame->opaque;
2596             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2597                                         decoded_frame->data, decoded_frame->linesize,
2598                                         AV_PERM_READ | AV_PERM_PRESERVE,
2599                                         ist->st->codec->width, ist->st->codec->height,
2600                                         ist->st->codec->pix_fmt);
2601
2602             avfilter_copy_frame_props(fb, decoded_frame);
2603             fb->buf->priv           = buf;
2604             fb->buf->free           = filter_release_buffer;
2605
2606             av_assert0(buf->refcount>0);
2607             buf->refcount++;
2608             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2609                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2610                                  AV_BUFFERSRC_FLAG_NO_COPY);
2611         } else
2612         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2613             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2614             exit_program(1);
2615         }
2616
2617     }
2618
2619     av_free(buffer_to_free);
2620     return ret;
2621 }
2622
2623 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2624 {
2625     AVSubtitle subtitle;
2626     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2627                                           &subtitle, got_output, pkt);
2628     if (ret < 0)
2629         return ret;
2630     if (!*got_output)
2631         return ret;
2632
2633     rate_emu_sleep(ist);
2634
2635     for (i = 0; i < nb_output_streams; i++) {
2636         OutputStream *ost = output_streams[i];
2637
2638         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2639             continue;
2640
2641         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2642     }
2643
2644     avsubtitle_free(&subtitle);
2645     return ret;
2646 }
2647
2648 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2649 static int output_packet(InputStream *ist, const AVPacket *pkt)
2650 {
2651     int ret = 0, i;
2652     int got_output;
2653
2654     AVPacket avpkt;
2655     if (!ist->saw_first_ts) {
2656         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;
2657         ist->pts = 0;
2658         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2659             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2660             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2661         }
2662         ist->saw_first_ts = 1;
2663     }
2664
2665     if (ist->next_dts == AV_NOPTS_VALUE)
2666         ist->next_dts = ist->dts;
2667     if (ist->next_pts == AV_NOPTS_VALUE)
2668         ist->next_pts = ist->pts;
2669
2670     if (pkt == NULL) {
2671         /* EOF handling */
2672         av_init_packet(&avpkt);
2673         avpkt.data = NULL;
2674         avpkt.size = 0;
2675         goto handle_eof;
2676     } else {
2677         avpkt = *pkt;
2678     }
2679
2680     if (pkt->dts != AV_NOPTS_VALUE) {
2681         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2682         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2683             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2684     }
2685
2686     // while we have more to decode or while the decoder did output something on EOF
2687     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2688         int duration;
2689     handle_eof:
2690
2691         ist->pts = ist->next_pts;
2692         ist->dts = ist->next_dts;
2693
2694         if (avpkt.size && avpkt.size != pkt->size) {
2695             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2696                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2697             ist->showed_multi_packet_warning = 1;
2698         }
2699
2700         switch (ist->st->codec->codec_type) {
2701         case AVMEDIA_TYPE_AUDIO:
2702             ret = decode_audio    (ist, &avpkt, &got_output);
2703             break;
2704         case AVMEDIA_TYPE_VIDEO:
2705             ret = decode_video    (ist, &avpkt, &got_output);
2706             if (avpkt.duration) {
2707                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2708             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2709                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2710                 duration = ((int64_t)AV_TIME_BASE *
2711                                 ist->st->codec->time_base.num * ticks) /
2712                                 ist->st->codec->time_base.den;
2713             } else
2714                 duration = 0;
2715
2716             if(ist->dts != AV_NOPTS_VALUE && duration) {
2717                 ist->next_dts += duration;
2718             }else
2719                 ist->next_dts = AV_NOPTS_VALUE;
2720
2721             if (got_output)
2722                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2723             break;
2724         case AVMEDIA_TYPE_SUBTITLE:
2725             ret = transcode_subtitles(ist, &avpkt, &got_output);
2726             break;
2727         default:
2728             return -1;
2729         }
2730
2731         if (ret < 0)
2732             return ret;
2733
2734         avpkt.dts=
2735         avpkt.pts= AV_NOPTS_VALUE;
2736
2737         // touch data and size only if not EOF
2738         if (pkt) {
2739             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2740                 ret = avpkt.size;
2741             avpkt.data += ret;
2742             avpkt.size -= ret;
2743         }
2744         if (!got_output) {
2745             continue;
2746         }
2747     }
2748
2749     /* handle stream copy */
2750     if (!ist->decoding_needed) {
2751         rate_emu_sleep(ist);
2752         ist->dts = ist->next_dts;
2753         switch (ist->st->codec->codec_type) {
2754         case AVMEDIA_TYPE_AUDIO:
2755             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2756                              ist->st->codec->sample_rate;
2757             break;
2758         case AVMEDIA_TYPE_VIDEO:
2759             if (pkt->duration) {
2760                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2761             } else if(ist->st->codec->time_base.num != 0) {
2762                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2763                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2764                                   ist->st->codec->time_base.num * ticks) /
2765                                   ist->st->codec->time_base.den;
2766             }
2767             break;
2768         }
2769         ist->pts = ist->dts;
2770         ist->next_pts = ist->next_dts;
2771     }
2772     for (i = 0; pkt && i < nb_output_streams; i++) {
2773         OutputStream *ost = output_streams[i];
2774
2775         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2776             continue;
2777
2778         do_streamcopy(ist, ost, pkt);
2779     }
2780
2781     return 0;
2782 }
2783
2784 static void print_sdp(void)
2785 {
2786     char sdp[2048];
2787     int i;
2788     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2789
2790     if (!avc)
2791         exit_program(1);
2792     for (i = 0; i < nb_output_files; i++)
2793         avc[i] = output_files[i]->ctx;
2794
2795     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2796     printf("SDP:\n%s\n", sdp);
2797     fflush(stdout);
2798     av_freep(&avc);
2799 }
2800
2801 static int init_input_stream(int ist_index, char *error, int error_len)
2802 {
2803     InputStream *ist = input_streams[ist_index];
2804
2805     if (ist->decoding_needed) {
2806         AVCodec *codec = ist->dec;
2807         if (!codec) {
2808             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2809                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2810             return AVERROR(EINVAL);
2811         }
2812
2813         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2814         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2815             ist->st->codec->get_buffer     = codec_get_buffer;
2816             ist->st->codec->release_buffer = codec_release_buffer;
2817             ist->st->codec->opaque         = &ist->buffer_pool;
2818         }
2819
2820         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2821             av_dict_set(&ist->opts, "threads", "auto", 0);
2822         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2823             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2824                     ist->file_index, ist->st->index);
2825             return AVERROR(EINVAL);
2826         }
2827         assert_codec_experimental(ist->st->codec, 0);
2828         assert_avoptions(ist->opts);
2829     }
2830
2831     ist->next_pts = AV_NOPTS_VALUE;
2832     ist->next_dts = AV_NOPTS_VALUE;
2833     ist->is_start = 1;
2834
2835     return 0;
2836 }
2837
2838 static InputStream *get_input_stream(OutputStream *ost)
2839 {
2840     if (ost->source_index >= 0)
2841         return input_streams[ost->source_index];
2842     return NULL;
2843 }
2844
2845 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2846                                     AVCodecContext *avctx)
2847 {
2848     char *p;
2849     int n = 1, i;
2850     int64_t t;
2851
2852     for (p = kf; *p; p++)
2853         if (*p == ',')
2854             n++;
2855     ost->forced_kf_count = n;
2856     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2857     if (!ost->forced_kf_pts) {
2858         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2859         exit_program(1);
2860     }
2861
2862     p = kf;
2863     for (i = 0; i < n; i++) {
2864         char *next = strchr(p, ',');
2865
2866         if (next)
2867             *next++ = 0;
2868
2869         t = parse_time_or_die("force_key_frames", p, 1);
2870         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2871
2872         p = next;
2873     }
2874 }
2875
2876 static int transcode_init(void)
2877 {
2878     int ret = 0, i, j, k;
2879     AVFormatContext *oc;
2880     AVCodecContext *codec, *icodec = NULL;
2881     OutputStream *ost;
2882     InputStream *ist;
2883     char error[1024];
2884     int want_sdp = 1;
2885
2886     /* init framerate emulation */
2887     for (i = 0; i < nb_input_files; i++) {
2888         InputFile *ifile = input_files[i];
2889         if (ifile->rate_emu)
2890             for (j = 0; j < ifile->nb_streams; j++)
2891                 input_streams[j + ifile->ist_index]->start = av_gettime();
2892     }
2893
2894     /* output stream init */
2895     for (i = 0; i < nb_output_files; i++) {
2896         oc = output_files[i]->ctx;
2897         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2898             av_dump_format(oc, i, oc->filename, 1);
2899             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2900             return AVERROR(EINVAL);
2901         }
2902     }
2903
2904     /* init complex filtergraphs */
2905     for (i = 0; i < nb_filtergraphs; i++)
2906         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2907             return ret;
2908
2909     /* for each output stream, we compute the right encoding parameters */
2910     for (i = 0; i < nb_output_streams; i++) {
2911         ost = output_streams[i];
2912         oc  = output_files[ost->file_index]->ctx;
2913         ist = get_input_stream(ost);
2914
2915         if (ost->attachment_filename)
2916             continue;
2917
2918         codec  = ost->st->codec;
2919
2920         if (ist) {
2921             icodec = ist->st->codec;
2922
2923             ost->st->disposition          = ist->st->disposition;
2924             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2925             codec->chroma_sample_location = icodec->chroma_sample_location;
2926         }
2927
2928         if (ost->stream_copy) {
2929             uint64_t extra_size;
2930
2931             av_assert0(ist && !ost->filter);
2932
2933             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2934
2935             if (extra_size > INT_MAX) {
2936                 return AVERROR(EINVAL);
2937             }
2938
2939             /* if stream_copy is selected, no need to decode or encode */
2940             codec->codec_id   = icodec->codec_id;
2941             codec->codec_type = icodec->codec_type;
2942
2943             if (!codec->codec_tag) {
2944                 if (!oc->oformat->codec_tag ||
2945                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2946                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2947                     codec->codec_tag = icodec->codec_tag;
2948             }
2949
2950             codec->bit_rate       = icodec->bit_rate;
2951             codec->rc_max_rate    = icodec->rc_max_rate;
2952             codec->rc_buffer_size = icodec->rc_buffer_size;
2953             codec->field_order    = icodec->field_order;
2954             codec->extradata      = av_mallocz(extra_size);
2955             if (!codec->extradata) {
2956                 return AVERROR(ENOMEM);
2957             }
2958             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2959             codec->extradata_size= icodec->extradata_size;
2960             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2961
2962             codec->time_base = ist->st->time_base;
2963             /*
2964              * Avi is a special case here because it supports variable fps but
2965              * having the fps and timebase differe significantly adds quite some
2966              * overhead
2967              */
2968             if(!strcmp(oc->oformat->name, "avi")) {
2969                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2970                                  && av_q2d(ist->st->time_base) < 1.0/500
2971                     || copy_tb==0){
2972                     codec->time_base = icodec->time_base;
2973                     codec->time_base.num *= icodec->ticks_per_frame;
2974                     codec->time_base.den *= 2;
2975                     codec->ticks_per_frame = 2;
2976                 }
2977             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2978                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2979                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2980             ) {
2981                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2982                                 && av_q2d(ist->st->time_base) < 1.0/500
2983                    || copy_tb==0){
2984                     codec->time_base = icodec->time_base;
2985                     codec->time_base.num *= icodec->ticks_per_frame;
2986                 }
2987             }
2988
2989             if(ost->frame_rate.num)
2990                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2991
2992             av_reduce(&codec->time_base.num, &codec->time_base.den,
2993                         codec->time_base.num, codec->time_base.den, INT_MAX);
2994
2995             switch (codec->codec_type) {
2996             case AVMEDIA_TYPE_AUDIO:
2997                 if (audio_volume != 256) {
2998                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2999                     exit_program(1);
3000                 }
3001                 codec->channel_layout     = icodec->channel_layout;
3002                 codec->sample_rate        = icodec->sample_rate;
3003                 codec->channels           = icodec->channels;
3004                 codec->frame_size         = icodec->frame_size;
3005                 codec->audio_service_type = icodec->audio_service_type;
3006                 codec->block_align        = icodec->block_align;
3007                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == CODEC_ID_MP3)
3008                     codec->block_align= 0;
3009                 if(codec->codec_id == CODEC_ID_AC3)
3010                     codec->block_align= 0;
3011                 break;
3012             case AVMEDIA_TYPE_VIDEO:
3013                 codec->pix_fmt            = icodec->pix_fmt;
3014                 codec->width              = icodec->width;
3015                 codec->height             = icodec->height;
3016                 codec->has_b_frames       = icodec->has_b_frames;
3017                 if (!codec->sample_aspect_ratio.num) {
3018                     codec->sample_aspect_ratio   =
3019                     ost->st->sample_aspect_ratio =
3020                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3021                         ist->st->codec->sample_aspect_ratio.num ?
3022                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3023                 }
3024                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3025                 break;
3026             case AVMEDIA_TYPE_SUBTITLE:
3027                 codec->width  = icodec->width;
3028                 codec->height = icodec->height;
3029                 break;
3030             case AVMEDIA_TYPE_DATA:
3031             case AVMEDIA_TYPE_ATTACHMENT:
3032                 break;
3033             default:
3034                 abort();
3035             }
3036         } else {
3037             if (!ost->enc)
3038                 ost->enc = avcodec_find_encoder(codec->codec_id);
3039             if (!ost->enc) {
3040                 /* should only happen when a default codec is not present. */
3041                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3042                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3043                 ret = AVERROR(EINVAL);
3044                 goto dump_format;
3045             }
3046
3047             if (ist)
3048                 ist->decoding_needed = 1;
3049             ost->encoding_needed = 1;
3050
3051             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3052                 if (ost->filter && !ost->frame_rate.num)
3053                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
3054                 if (ist && !ost->frame_rate.num)
3055                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3056                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3057                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3058                     ost->frame_rate = ost->enc->supported_framerates[idx];
3059                 }
3060             }
3061
3062             if (!ost->filter &&
3063                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3064                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3065                     FilterGraph *fg;
3066                     fg = init_simple_filtergraph(ist, ost);
3067                     if (configure_filtergraph(fg)) {
3068                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3069                         exit(1);
3070                     }
3071             }
3072
3073             switch (codec->codec_type) {
3074             case AVMEDIA_TYPE_AUDIO:
3075                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3076                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3077                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3078                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3079                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3080                 break;
3081             case AVMEDIA_TYPE_VIDEO:
3082                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3083                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
3084                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
3085                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3086                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3087                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3088                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3089                 }
3090                 for (j = 0; j < ost->forced_kf_count; j++)
3091                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3092                                                          AV_TIME_BASE_Q,
3093                                                          codec->time_base);
3094
3095                 codec->width  = ost->filter->filter->inputs[0]->w;
3096                 codec->height = ost->filter->filter->inputs[0]->h;
3097                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3098                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3099                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3100                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3101                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3102
3103                 if (!icodec ||
3104                     codec->width   != icodec->width  ||
3105                     codec->height  != icodec->height ||
3106                     codec->pix_fmt != icodec->pix_fmt) {
3107                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3108                 }
3109
3110                 if (ost->forced_keyframes)
3111                     parse_forced_key_frames(ost->forced_keyframes, ost,
3112                                             ost->st->codec);
3113                 break;
3114             case AVMEDIA_TYPE_SUBTITLE:
3115                 codec->time_base = (AVRational){1, 1000};
3116                 break;
3117             default:
3118                 abort();
3119                 break;
3120             }
3121             /* two pass mode */
3122             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3123                 char logfilename[1024];
3124                 FILE *f;
3125
3126                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3127                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3128                          i);
3129                 if (!strcmp(ost->enc->name, "libx264")) {
3130                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3131                 } else {
3132                     if (codec->flags & CODEC_FLAG_PASS2) {
3133                         char  *logbuffer;
3134                         size_t logbuffer_size;
3135                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3136                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3137                                    logfilename);
3138                             exit_program(1);
3139                         }
3140                         codec->stats_in = logbuffer;
3141                     }
3142                     if (codec->flags & CODEC_FLAG_PASS1) {
3143                         f = fopen(logfilename, "wb");
3144                         if (!f) {
3145                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3146                                 logfilename, strerror(errno));
3147                             exit_program(1);
3148                         }
3149                         ost->logfile = f;
3150                     }
3151                 }
3152             }
3153         }
3154     }
3155
3156     /* open each encoder */
3157     for (i = 0; i < nb_output_streams; i++) {
3158         ost = output_streams[i];
3159         if (ost->encoding_needed) {
3160             AVCodec      *codec = ost->enc;
3161             AVCodecContext *dec = NULL;
3162
3163             if ((ist = get_input_stream(ost)))
3164                 dec = ist->st->codec;
3165             if (dec && dec->subtitle_header) {
3166                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3167                 if (!ost->st->codec->subtitle_header) {
3168                     ret = AVERROR(ENOMEM);
3169                     goto dump_format;
3170                 }
3171                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3172                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3173             }
3174             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3175                 av_dict_set(&ost->opts, "threads", "auto", 0);
3176             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3177                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3178                         ost->file_index, ost->index);
3179                 ret = AVERROR(EINVAL);
3180                 goto dump_format;
3181             }
3182             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3183                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3184                 av_buffersink_set_frame_size(ost->filter->filter,
3185                                              ost->st->codec->frame_size);
3186             assert_codec_experimental(ost->st->codec, 1);
3187             assert_avoptions(ost->opts);
3188             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3189                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3190                                              " It takes bits/s as argument, not kbits/s\n");
3191             extra_size += ost->st->codec->extradata_size;
3192
3193             if (ost->st->codec->me_threshold)
3194                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3195         }
3196     }
3197
3198     /* init input streams */
3199     for (i = 0; i < nb_input_streams; i++)
3200         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3201             goto dump_format;
3202
3203     /* discard unused programs */
3204     for (i = 0; i < nb_input_files; i++) {
3205         InputFile *ifile = input_files[i];
3206         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3207             AVProgram *p = ifile->ctx->programs[j];
3208             int discard  = AVDISCARD_ALL;
3209
3210             for (k = 0; k < p->nb_stream_indexes; k++)
3211                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3212                     discard = AVDISCARD_DEFAULT;
3213                     break;
3214                 }
3215             p->discard = discard;
3216         }
3217     }
3218
3219     /* open files and write file headers */
3220     for (i = 0; i < nb_output_files; i++) {
3221         oc = output_files[i]->ctx;
3222         oc->interrupt_callback = int_cb;
3223         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3224             char errbuf[128];
3225             const char *errbuf_ptr = errbuf;
3226             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3227                 errbuf_ptr = strerror(AVUNERROR(ret));
3228             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3229             ret = AVERROR(EINVAL);
3230             goto dump_format;
3231         }
3232 //         assert_avoptions(output_files[i]->opts);
3233         if (strcmp(oc->oformat->name, "rtp")) {
3234             want_sdp = 0;
3235         }
3236     }
3237
3238  dump_format:
3239     /* dump the file output parameters - cannot be done before in case
3240        of stream copy */
3241     for (i = 0; i < nb_output_files; i++) {
3242         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3243     }
3244
3245     /* dump the stream mapping */
3246     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3247     for (i = 0; i < nb_input_streams; i++) {
3248         ist = input_streams[i];
3249
3250         for (j = 0; j < ist->nb_filters; j++) {
3251             if (ist->filters[j]->graph->graph_desc) {
3252                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3253                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3254                        ist->filters[j]->name);
3255                 if (nb_filtergraphs > 1)
3256                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3257                 av_log(NULL, AV_LOG_INFO, "\n");
3258             }
3259         }
3260     }
3261
3262     for (i = 0; i < nb_output_streams; i++) {
3263         ost = output_streams[i];
3264
3265         if (ost->attachment_filename) {
3266             /* an attached file */
3267             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3268                    ost->attachment_filename, ost->file_index, ost->index);
3269             continue;
3270         }
3271
3272         if (ost->filter && ost->filter->graph->graph_desc) {
3273             /* output from a complex graph */
3274             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3275             if (nb_filtergraphs > 1)
3276                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3277
3278             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3279                    ost->index, ost->enc ? ost->enc->name : "?");
3280             continue;
3281         }
3282
3283         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3284                input_streams[ost->source_index]->file_index,
3285                input_streams[ost->source_index]->st->index,
3286                ost->file_index,
3287                ost->index);
3288         if (ost->sync_ist != input_streams[ost->source_index])
3289             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3290                    ost->sync_ist->file_index,
3291                    ost->sync_ist->st->index);
3292         if (ost->stream_copy)
3293             av_log(NULL, AV_LOG_INFO, " (copy)");
3294         else
3295             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3296                    input_streams[ost->source_index]->dec->name : "?",
3297                    ost->enc ? ost->enc->name : "?");
3298         av_log(NULL, AV_LOG_INFO, "\n");
3299     }
3300
3301     if (ret) {
3302         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3303         return ret;
3304     }
3305
3306     if (want_sdp) {
3307         print_sdp();
3308     }
3309
3310     return 0;
3311 }
3312
3313 /**
3314  * @return 1 if there are still streams where more output is wanted,
3315  *         0 otherwise
3316  */
3317 static int need_output(void)
3318 {
3319     int i;
3320
3321     for (i = 0; i < nb_output_streams; i++) {
3322         OutputStream *ost    = output_streams[i];
3323         OutputFile *of       = output_files[ost->file_index];
3324         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3325
3326         if (ost->is_past_recording_time ||
3327             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3328             continue;
3329         if (ost->frame_number >= ost->max_frames) {
3330             int j;
3331             for (j = 0; j < of->ctx->nb_streams; j++)
3332                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
3333             continue;
3334         }
3335
3336         return 1;
3337     }
3338
3339     return 0;
3340 }
3341
3342 static int select_input_file(uint8_t *no_packet)
3343 {
3344     int64_t ipts_min = INT64_MAX;
3345     int i, file_index = -1;
3346
3347     for (i = 0; i < nb_input_streams; i++) {
3348         InputStream *ist = input_streams[i];
3349         int64_t ipts     = ist->pts;
3350
3351         if (ist->discard || no_packet[ist->file_index])
3352             continue;
3353         if (!input_files[ist->file_index]->eof_reached) {
3354             if (ipts < ipts_min) {
3355                 ipts_min = ipts;
3356                 file_index = ist->file_index;
3357             }
3358         }
3359     }
3360
3361     return file_index;
3362 }
3363
3364 static int check_keyboard_interaction(int64_t cur_time)
3365 {
3366     int i, ret, key;
3367     static int64_t last_time;
3368     if (received_nb_signals)
3369         return AVERROR_EXIT;
3370     /* read_key() returns 0 on EOF */
3371     if(cur_time - last_time >= 100000 && !run_as_daemon){
3372         key =  read_key();
3373         last_time = cur_time;
3374     }else
3375         key = -1;
3376     if (key == 'q')
3377         return AVERROR_EXIT;
3378     if (key == '+') av_log_set_level(av_log_get_level()+10);
3379     if (key == '-') av_log_set_level(av_log_get_level()-10);
3380     if (key == 's') qp_hist     ^= 1;
3381     if (key == 'h'){
3382         if (do_hex_dump){
3383             do_hex_dump = do_pkt_dump = 0;
3384         } else if(do_pkt_dump){
3385             do_hex_dump = 1;
3386         } else
3387             do_pkt_dump = 1;
3388         av_log_set_level(AV_LOG_DEBUG);
3389     }
3390     if (key == 'c' || key == 'C'){
3391         char buf[4096], target[64], command[256], arg[256] = {0};
3392         double time;
3393         int k, n = 0;
3394         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3395         i = 0;
3396         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3397             if (k > 0)
3398                 buf[i++] = k;
3399         buf[i] = 0;
3400         if (k > 0 &&
3401             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3402             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3403                    target, time, command, arg);
3404             for (i = 0; i < nb_filtergraphs; i++) {
3405                 FilterGraph *fg = filtergraphs[i];
3406                 if (fg->graph) {
3407                     if (time < 0) {
3408                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3409                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3410                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3411                     } else {
3412                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3413                     }
3414                 }
3415             }
3416         } else {
3417             av_log(NULL, AV_LOG_ERROR,
3418                    "Parse error, at least 3 arguments were expected, "
3419                    "only %d given in string '%s'\n", n, buf);
3420         }
3421     }
3422     if (key == 'd' || key == 'D'){
3423         int debug=0;
3424         if(key == 'D') {
3425             debug = input_streams[0]->st->codec->debug<<1;
3426             if(!debug) debug = 1;
3427             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3428                 debug += debug;
3429         }else
3430             if(scanf("%d", &debug)!=1)
3431                 fprintf(stderr,"error parsing debug value\n");
3432         for(i=0;i<nb_input_streams;i++) {
3433             input_streams[i]->st->codec->debug = debug;
3434         }
3435         for(i=0;i<nb_output_streams;i++) {
3436             OutputStream *ost = output_streams[i];
3437             ost->st->codec->debug = debug;
3438         }
3439         if(debug) av_log_set_level(AV_LOG_DEBUG);
3440         fprintf(stderr,"debug=%d\n", debug);
3441     }
3442     if (key == '?'){
3443         fprintf(stderr, "key    function\n"
3444                         "?      show this help\n"
3445                         "+      increase verbosity\n"
3446                         "-      decrease verbosity\n"
3447                         "c      Send command to filtergraph\n"
3448                         "D      cycle through available debug modes\n"
3449                         "h      dump packets/hex press to cycle through the 3 states\n"
3450                         "q      quit\n"
3451                         "s      Show QP histogram\n"
3452         );
3453     }
3454     return 0;
3455 }
3456
3457 #if HAVE_PTHREADS
3458 static void *input_thread(void *arg)
3459 {
3460     InputFile *f = arg;
3461     int ret = 0;
3462
3463     while (!transcoding_finished && ret >= 0) {
3464         AVPacket pkt;
3465         ret = av_read_frame(f->ctx, &pkt);
3466
3467         if (ret == AVERROR(EAGAIN)) {
3468             av_usleep(10000);
3469             ret = 0;
3470             continue;
3471         } else if (ret < 0)
3472             break;
3473
3474         pthread_mutex_lock(&f->fifo_lock);
3475         while (!av_fifo_space(f->fifo))
3476             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3477
3478         av_dup_packet(&pkt);
3479         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3480
3481         pthread_mutex_unlock(&f->fifo_lock);
3482     }
3483
3484     f->finished = 1;
3485     return NULL;
3486 }
3487
3488 static void free_input_threads(void)
3489 {
3490     int i;
3491
3492     if (nb_input_files == 1)
3493         return;
3494
3495     transcoding_finished = 1;
3496
3497     for (i = 0; i < nb_input_files; i++) {
3498         InputFile *f = input_files[i];
3499         AVPacket pkt;
3500
3501         if (!f->fifo || f->joined)
3502             continue;
3503
3504         pthread_mutex_lock(&f->fifo_lock);
3505         while (av_fifo_size(f->fifo)) {
3506             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3507             av_free_packet(&pkt);
3508         }
3509         pthread_cond_signal(&f->fifo_cond);
3510         pthread_mutex_unlock(&f->fifo_lock);
3511
3512         pthread_join(f->thread, NULL);
3513         f->joined = 1;
3514
3515         while (av_fifo_size(f->fifo)) {
3516             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3517             av_free_packet(&pkt);
3518         }
3519         av_fifo_free(f->fifo);
3520     }
3521 }
3522
3523 static int init_input_threads(void)
3524 {
3525     int i, ret;
3526
3527     if (nb_input_files == 1)
3528         return 0;
3529
3530     for (i = 0; i < nb_input_files; i++) {
3531         InputFile *f = input_files[i];
3532
3533         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3534             return AVERROR(ENOMEM);
3535
3536         pthread_mutex_init(&f->fifo_lock, NULL);
3537         pthread_cond_init (&f->fifo_cond, NULL);
3538
3539         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3540             return AVERROR(ret);
3541     }
3542     return 0;
3543 }
3544
3545 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3546 {
3547     int ret = 0;
3548
3549     pthread_mutex_lock(&f->fifo_lock);
3550
3551     if (av_fifo_size(f->fifo)) {
3552         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3553         pthread_cond_signal(&f->fifo_cond);
3554     } else {
3555         if (f->finished)
3556             ret = AVERROR_EOF;
3557         else
3558             ret = AVERROR(EAGAIN);
3559     }
3560
3561     pthread_mutex_unlock(&f->fifo_lock);
3562
3563     return ret;
3564 }
3565 #endif
3566
3567 static int get_input_packet(InputFile *f, AVPacket *pkt)
3568 {
3569 #if HAVE_PTHREADS
3570     if (nb_input_files > 1)
3571         return get_input_packet_mt(f, pkt);
3572 #endif
3573     return av_read_frame(f->ctx, pkt);
3574 }
3575
3576 /*
3577  * The following code is the main loop of the file converter
3578  */
3579 static int transcode(void)
3580 {
3581     int ret, i;
3582     AVFormatContext *is, *os;
3583     OutputStream *ost;
3584     InputStream *ist;
3585     uint8_t *no_packet;
3586     int no_packet_count = 0;
3587     int64_t timer_start;
3588
3589     if (!(no_packet = av_mallocz(nb_input_files)))
3590         exit_program(1);
3591
3592     ret = transcode_init();
3593     if (ret < 0)
3594         goto fail;
3595
3596     if (stdin_interaction) {
3597         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3598     }
3599
3600     timer_start = av_gettime();
3601
3602 #if HAVE_PTHREADS
3603     if ((ret = init_input_threads()) < 0)
3604         goto fail;
3605 #endif
3606
3607     for (; received_sigterm == 0;) {
3608         int file_index, ist_index;
3609         AVPacket pkt;
3610         int64_t cur_time= av_gettime();
3611
3612         /* if 'q' pressed, exits */
3613         if (stdin_interaction)
3614             if (check_keyboard_interaction(cur_time) < 0)
3615                 break;
3616
3617         /* check if there's any stream where output is still needed */
3618         if (!need_output()) {
3619             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3620             break;
3621         }
3622
3623         /* select the stream that we must read now */
3624         file_index = select_input_file(no_packet);
3625         /* if none, if is finished */
3626         if (file_index < 0) {
3627             if (no_packet_count) {
3628                 no_packet_count = 0;
3629                 memset(no_packet, 0, nb_input_files);
3630                 av_usleep(10000);
3631                 continue;
3632             }
3633             av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3634             break;
3635         }
3636
3637         is  = input_files[file_index]->ctx;
3638         ret = get_input_packet(input_files[file_index], &pkt);
3639
3640         if (ret == AVERROR(EAGAIN)) {
3641             no_packet[file_index] = 1;
3642             no_packet_count++;
3643             continue;
3644         }
3645         if (ret < 0) {
3646             if (ret != AVERROR_EOF) {
3647                 print_error(is->filename, ret);
3648                 if (exit_on_error)
3649                     exit_program(1);
3650             }
3651             input_files[file_index]->eof_reached = 1;
3652
3653             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3654                 ist = input_streams[input_files[file_index]->ist_index + i];
3655                 if (ist->decoding_needed)
3656                     output_packet(ist, NULL);
3657             }
3658
3659             if (opt_shortest)
3660                 break;
3661             else
3662                 continue;
3663         }
3664
3665         no_packet_count = 0;
3666         memset(no_packet, 0, nb_input_files);
3667
3668         if (do_pkt_dump) {
3669             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3670                              is->streams[pkt.stream_index]);
3671         }
3672         /* the following test is needed in case new streams appear
3673            dynamically in stream : we ignore them */
3674         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3675             goto discard_packet;
3676         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3677         ist = input_streams[ist_index];
3678         if (ist->discard)
3679             goto discard_packet;
3680
3681         if (pkt.dts != AV_NOPTS_VALUE)
3682             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3683         if (pkt.pts != AV_NOPTS_VALUE)
3684             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3685
3686         if (pkt.pts != AV_NOPTS_VALUE)
3687             pkt.pts *= ist->ts_scale;
3688         if (pkt.dts != AV_NOPTS_VALUE)
3689             pkt.dts *= ist->ts_scale;
3690
3691         if (debug_ts) {
3692             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3693                     "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",
3694                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3695                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3696                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3697                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3698                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3699                     input_files[ist->file_index]->ts_offset);
3700         }
3701
3702         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3703             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3704             int64_t delta   = pkt_dts - ist->next_dts;
3705             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3706             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3707                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3708                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3709                 pkt_dts+1<ist->pts){
3710                 input_files[ist->file_index]->ts_offset -= delta;
3711                 av_log(NULL, AV_LOG_DEBUG,
3712                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3713                        delta, input_files[ist->file_index]->ts_offset);
3714                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3715                 if (pkt.pts != AV_NOPTS_VALUE)
3716                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3717             }
3718             } else {
3719                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3720                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3721                      pkt_dts+1<ist->pts){
3722                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3723                     pkt.dts = AV_NOPTS_VALUE;
3724                 }
3725                 if (pkt.pts != AV_NOPTS_VALUE){
3726                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3727                     delta   = pkt_pts - ist->next_dts;
3728                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3729                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3730                         pkt_pts+1<ist->pts) {
3731                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3732                         pkt.pts = AV_NOPTS_VALUE;
3733                     }
3734                 }
3735             }
3736         }
3737
3738         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3739         if ((ret = output_packet(ist, &pkt)) < 0 ||
3740             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3741             char buf[128];
3742             av_strerror(ret, buf, sizeof(buf));
3743             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3744                    ist->file_index, ist->st->index, buf);
3745             if (exit_on_error)
3746                 exit_program(1);
3747             av_free_packet(&pkt);
3748             continue;
3749         }
3750
3751     discard_packet:
3752         av_free_packet(&pkt);
3753
3754         /* dump report by using the output first video and audio streams */
3755         print_report(0, timer_start, cur_time);
3756     }
3757 #if HAVE_PTHREADS
3758     free_input_threads();
3759 #endif
3760
3761     /* at the end of stream, we must flush the decoder buffers */
3762     for (i = 0; i < nb_input_streams; i++) {
3763         ist = input_streams[i];
3764         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3765             output_packet(ist, NULL);
3766         }
3767     }
3768     poll_filters();
3769     flush_encoders();
3770
3771     term_exit();
3772
3773     /* write the trailer if needed and close file */
3774     for (i = 0; i < nb_output_files; i++) {
3775         os = output_files[i]->ctx;
3776         av_write_trailer(os);
3777     }
3778
3779     /* dump report by using the first video and audio streams */
3780     print_report(1, timer_start, av_gettime());
3781
3782     /* close each encoder */
3783     for (i = 0; i < nb_output_streams; i++) {
3784         ost = output_streams[i];
3785         if (ost->encoding_needed) {
3786             av_freep(&ost->st->codec->stats_in);
3787             avcodec_close(ost->st->codec);
3788         }
3789     }
3790
3791     /* close each decoder */
3792     for (i = 0; i < nb_input_streams; i++) {
3793         ist = input_streams[i];
3794         if (ist->decoding_needed) {
3795             avcodec_close(ist->st->codec);
3796         }
3797     }
3798
3799     /* finished ! */
3800     ret = 0;
3801
3802  fail:
3803     av_freep(&no_packet);
3804 #if HAVE_PTHREADS
3805     free_input_threads();
3806 #endif
3807
3808     if (output_streams) {
3809         for (i = 0; i < nb_output_streams; i++) {
3810             ost = output_streams[i];
3811             if (ost) {
3812                 if (ost->stream_copy)
3813                     av_freep(&ost->st->codec->extradata);
3814                 if (ost->logfile) {
3815                     fclose(ost->logfile);
3816                     ost->logfile = NULL;
3817                 }
3818                 av_freep(&ost->st->codec->subtitle_header);
3819                 av_free(ost->forced_kf_pts);
3820                 av_dict_free(&ost->opts);
3821             }
3822         }
3823     }
3824     return ret;
3825 }
3826
3827 static int opt_frame_crop(const char *opt, const char *arg)
3828 {
3829     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3830     return AVERROR(EINVAL);
3831 }
3832
3833 static int opt_pad(const char *opt, const char *arg)
3834 {
3835     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3836     return -1;
3837 }
3838
3839 static int opt_video_channel(const char *opt, const char *arg)
3840 {
3841     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3842     return opt_default("channel", arg);
3843 }
3844
3845 static int opt_video_standard(const char *opt, const char *arg)
3846 {
3847     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3848     return opt_default("standard", arg);
3849 }
3850
3851 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3852 {
3853     audio_codec_name = arg;
3854     return parse_option(o, "codec:a", arg, options);
3855 }
3856
3857 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3858 {
3859     video_codec_name = arg;
3860     return parse_option(o, "codec:v", arg, options);
3861 }
3862
3863 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3864 {
3865     subtitle_codec_name = arg;
3866     return parse_option(o, "codec:s", arg, options);
3867 }
3868
3869 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3870 {
3871     return parse_option(o, "codec:d", arg, options);
3872 }
3873
3874 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3875 {
3876     StreamMap *m = NULL;
3877     int i, negative = 0, file_idx;
3878     int sync_file_idx = -1, sync_stream_idx = 0;
3879     char *p, *sync;
3880     char *map;
3881
3882     if (*arg == '-') {
3883         negative = 1;
3884         arg++;
3885     }
3886     map = av_strdup(arg);
3887
3888     /* parse sync stream first, just pick first matching stream */
3889     if (sync = strchr(map, ',')) {
3890         *sync = 0;
3891         sync_file_idx = strtol(sync + 1, &sync, 0);
3892         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3893             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3894             exit_program(1);
3895         }
3896         if (*sync)
3897             sync++;
3898         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3899             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3900                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3901                 sync_stream_idx = i;
3902                 break;
3903             }
3904         if (i == input_files[sync_file_idx]->nb_streams) {
3905             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3906                                        "match any streams.\n", arg);
3907             exit_program(1);
3908         }
3909     }
3910
3911
3912     if (map[0] == '[') {
3913         /* this mapping refers to lavfi output */
3914         const char *c = map + 1;
3915         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3916                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3917         m = &o->stream_maps[o->nb_stream_maps - 1];
3918         m->linklabel = av_get_token(&c, "]");
3919         if (!m->linklabel) {
3920             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3921             exit_program(1);
3922         }
3923     } else {
3924         file_idx = strtol(map, &p, 0);
3925         if (file_idx >= nb_input_files || file_idx < 0) {
3926             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3927             exit_program(1);
3928         }
3929         if (negative)
3930             /* disable some already defined maps */
3931             for (i = 0; i < o->nb_stream_maps; i++) {
3932                 m = &o->stream_maps[i];
3933                 if (file_idx == m->file_index &&
3934                     check_stream_specifier(input_files[m->file_index]->ctx,
3935                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3936                                            *p == ':' ? p + 1 : p) > 0)
3937                     m->disabled = 1;
3938             }
3939         else
3940             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3941                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3942                             *p == ':' ? p + 1 : p) <= 0)
3943                     continue;
3944                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3945                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3946                 m = &o->stream_maps[o->nb_stream_maps - 1];
3947
3948                 m->file_index   = file_idx;
3949                 m->stream_index = i;
3950
3951                 if (sync_file_idx >= 0) {
3952                     m->sync_file_index   = sync_file_idx;
3953                     m->sync_stream_index = sync_stream_idx;
3954                 } else {
3955                     m->sync_file_index   = file_idx;
3956                     m->sync_stream_index = i;
3957                 }
3958             }
3959     }
3960
3961     if (!m) {
3962         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3963         exit_program(1);
3964     }
3965
3966     av_freep(&map);
3967     return 0;
3968 }
3969
3970 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3971 {
3972     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3973                                 &o->nb_attachments, o->nb_attachments + 1);
3974     o->attachments[o->nb_attachments - 1] = arg;
3975     return 0;
3976 }
3977
3978 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3979 {
3980     int n;
3981     AVStream *st;
3982     AudioChannelMap *m;
3983
3984     o->audio_channel_maps =
3985         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3986                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3987     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3988
3989     /* muted channel syntax */
3990     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3991     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3992         m->file_idx = m->stream_idx = -1;
3993         if (n == 1)
3994             m->ofile_idx = m->ostream_idx = -1;
3995         return 0;
3996     }
3997
3998     /* normal syntax */
3999     n = sscanf(arg, "%d.%d.%d:%d.%d",
4000                &m->file_idx,  &m->stream_idx, &m->channel_idx,
4001                &m->ofile_idx, &m->ostream_idx);
4002
4003     if (n != 3 && n != 5) {
4004         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
4005                "[file.stream.channel|-1][:syncfile:syncstream]\n");
4006         exit_program(1);
4007     }
4008
4009     if (n != 5) // only file.stream.channel specified
4010         m->ofile_idx = m->ostream_idx = -1;
4011
4012     /* check input */
4013     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
4014         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
4015                m->file_idx);
4016         exit_program(1);
4017     }
4018     if (m->stream_idx < 0 ||
4019         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
4020         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
4021                m->file_idx, m->stream_idx);
4022         exit_program(1);
4023     }
4024     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
4025     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
4026         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
4027                m->file_idx, m->stream_idx);
4028         exit_program(1);
4029     }
4030     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
4031         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
4032                m->file_idx, m->stream_idx, m->channel_idx);
4033         exit_program(1);
4034     }
4035     return 0;
4036 }
4037
4038 /**
4039  * Parse a metadata specifier in arg.
4040  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
4041  * @param index for type c/p, chapter/program index is written here
4042  * @param stream_spec for type s, the stream specifier is written here
4043  */
4044 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
4045 {
4046     if (*arg) {
4047         *type = *arg;
4048         switch (*arg) {
4049         case 'g':
4050             break;
4051         case 's':
4052             if (*(++arg) && *arg != ':') {
4053                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
4054                 exit_program(1);
4055             }
4056             *stream_spec = *arg == ':' ? arg + 1 : "";
4057             break;
4058         case 'c':
4059         case 'p':
4060             if (*(++arg) == ':')
4061                 *index = strtol(++arg, NULL, 0);
4062             break;
4063         default:
4064             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
4065             exit_program(1);
4066         }
4067     } else
4068         *type = 'g';
4069 }
4070
4071 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
4072 {
4073     AVDictionary **meta_in = NULL;
4074     AVDictionary **meta_out = NULL;
4075     int i, ret = 0;
4076     char type_in, type_out;
4077     const char *istream_spec = NULL, *ostream_spec = NULL;
4078     int idx_in = 0, idx_out = 0;
4079
4080     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
4081     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
4082
4083     if (!ic) {
4084         if (type_out == 'g' || !*outspec)
4085             o->metadata_global_manual = 1;
4086         if (type_out == 's' || !*outspec)
4087             o->metadata_streams_manual = 1;
4088         if (type_out == 'c' || !*outspec)
4089             o->metadata_chapters_manual = 1;
4090         return 0;
4091     }
4092
4093     if (type_in == 'g' || type_out == 'g')
4094         o->metadata_global_manual = 1;
4095     if (type_in == 's' || type_out == 's')
4096         o->metadata_streams_manual = 1;
4097     if (type_in == 'c' || type_out == 'c')
4098         o->metadata_chapters_manual = 1;
4099
4100 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4101     if ((index) < 0 || (index) >= (nb_elems)) {\
4102         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
4103                 (desc), (index));\
4104         exit_program(1);\
4105     }
4106
4107 #define SET_DICT(type, meta, context, index)\
4108         switch (type) {\
4109         case 'g':\
4110             meta = &context->metadata;\
4111             break;\
4112         case 'c':\
4113             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
4114             meta = &context->chapters[index]->metadata;\
4115             break;\
4116         case 'p':\
4117             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
4118             meta = &context->programs[index]->metadata;\
4119             break;\
4120         default: av_assert0(0);\
4121         }\
4122
4123     SET_DICT(type_in, meta_in, ic, idx_in);
4124     SET_DICT(type_out, meta_out, oc, idx_out);
4125
4126     /* for input streams choose first matching stream */
4127     if (type_in == 's') {
4128         for (i = 0; i < ic->nb_streams; i++) {
4129             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
4130                 meta_in = &ic->streams[i]->metadata;
4131                 break;
4132             } else if (ret < 0)
4133                 exit_program(1);
4134         }
4135         if (!meta_in) {
4136             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
4137             exit_program(1);
4138         }
4139     }
4140
4141     if (type_out == 's') {
4142         for (i = 0; i < oc->nb_streams; i++) {
4143             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
4144                 meta_out = &oc->streams[i]->metadata;
4145                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4146             } else if (ret < 0)
4147                 exit_program(1);
4148         }
4149     } else
4150         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4151
4152     return 0;
4153 }
4154
4155 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
4156 {
4157     char buf[128];
4158     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
4159     struct tm time = *gmtime((time_t*)&recording_timestamp);
4160     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
4161     parse_option(o, "metadata", buf, options);
4162
4163     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
4164                                  "tag instead.\n", opt);
4165     return 0;
4166 }
4167
4168 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4169 {
4170     const char *codec_string = encoder ? "encoder" : "decoder";
4171     AVCodec *codec;
4172
4173     codec = encoder ?
4174         avcodec_find_encoder_by_name(name) :
4175         avcodec_find_decoder_by_name(name);
4176     if (!codec) {
4177         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4178         exit_program(1);
4179     }
4180     if (codec->type != type) {
4181         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4182         exit_program(1);
4183     }
4184     return codec;
4185 }
4186
4187 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4188 {
4189     char *codec_name = NULL;
4190
4191     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4192     if (codec_name) {
4193         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4194         st->codec->codec_id = codec->id;
4195         return codec;
4196     } else
4197         return avcodec_find_decoder(st->codec->codec_id);
4198 }
4199
4200 /**
4201  * Add all the streams from the given input file to the global
4202  * list of input streams.
4203  */
4204 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4205 {
4206     int i;
4207     char *next, *codec_tag = NULL;
4208
4209     for (i = 0; i < ic->nb_streams; i++) {
4210         AVStream *st = ic->streams[i];
4211         AVCodecContext *dec = st->codec;
4212         InputStream *ist = av_mallocz(sizeof(*ist));
4213         char *framerate = NULL;
4214
4215         if (!ist)
4216             exit_program(1);
4217
4218         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4219         input_streams[nb_input_streams - 1] = ist;
4220
4221         ist->st = st;
4222         ist->file_index = nb_input_files;
4223         ist->discard = 1;
4224         st->discard  = AVDISCARD_ALL;
4225         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st, choose_decoder(o, ic, st));
4226
4227         ist->ts_scale = 1.0;
4228         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4229
4230         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4231         if (codec_tag) {
4232             uint32_t tag = strtol(codec_tag, &next, 0);
4233             if (*next)
4234                 tag = AV_RL32(codec_tag);
4235             st->codec->codec_tag = tag;
4236         }
4237
4238         ist->dec = choose_decoder(o, ic, st);
4239
4240         switch (dec->codec_type) {
4241         case AVMEDIA_TYPE_VIDEO:
4242             if(!ist->dec)
4243                 ist->dec = avcodec_find_decoder(dec->codec_id);
4244             if (dec->lowres) {
4245                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4246             }
4247
4248             ist->resample_height  = dec->height;
4249             ist->resample_width   = dec->width;
4250             ist->resample_pix_fmt = dec->pix_fmt;
4251
4252             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
4253             if (framerate && av_parse_video_rate(&ist->framerate,
4254                                                  framerate) < 0) {
4255                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
4256                        framerate);
4257                 exit_program(1);
4258             }
4259
4260             ist->top_field_first = -1;
4261             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
4262
4263             break;
4264         case AVMEDIA_TYPE_AUDIO:
4265             guess_input_channel_layout(ist);
4266
4267             ist->resample_sample_fmt     = dec->sample_fmt;
4268             ist->resample_sample_rate    = dec->sample_rate;
4269             ist->resample_channels       = dec->channels;
4270             ist->resample_channel_layout = dec->channel_layout;
4271
4272             break;
4273         case AVMEDIA_TYPE_DATA: