ffmpeg: random cosmectics to reduce diff to qatar
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88 #include <time.h>
89
90 #include "cmdutils.h"
91
92 #include "libavutil/avassert.h"
93
94 #define VSYNC_AUTO       -1
95 #define VSYNC_PASSTHROUGH 0
96 #define VSYNC_CFR         1
97 #define VSYNC_VFR         2
98 #define VSYNC_DROP        0xff
99
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179 } InputFilter;
180
181 typedef struct OutputFilter {
182     AVFilterContext     *filter;
183     struct OutputStream *ost;
184     struct FilterGraph  *graph;
185
186     /* temporary storage until stream maps are processed */
187     AVFilterInOut       *out_tmp;
188 } OutputFilter;
189
190 typedef struct FilterGraph {
191     int            index;
192     const char    *graph_desc;
193
194     AVFilterGraph *graph;
195
196     InputFilter   **inputs;
197     int          nb_inputs;
198     OutputFilter **outputs;
199     int         nb_outputs;
200 } FilterGraph;
201
202 typedef struct FrameBuffer {
203     uint8_t *base[4];
204     uint8_t *data[4];
205     int  linesize[4];
206
207     int h, w;
208     enum PixelFormat pix_fmt;
209
210     int refcount;
211     struct InputStream *ist;
212     struct FrameBuffer *next;
213 } FrameBuffer;
214
215 typedef struct InputStream {
216     int file_index;
217     AVStream *st;
218     int discard;             /* true if stream data should be discarded */
219     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
220     AVCodec *dec;
221     AVFrame *decoded_frame;
222
223     int64_t       start;     /* time when read started */
224     /* predicted dts of the next packet read for this stream or (when there are
225      * several frames in a packet) of the next frame in current packet */
226     int64_t       next_dts;
227     /* dts of the last packet read for this stream */
228     int64_t       dts;
229
230     int64_t       next_pts;  /* synthetic pts for the next decode frame */
231     int64_t       pts;       /* current pts of the decoded frame */
232     double ts_scale;
233     int is_start;            /* is 1 at the start and after a discontinuity */
234     int saw_first_ts;
235     int showed_multi_packet_warning;
236     AVDictionary *opts;
237
238     int resample_height;
239     int resample_width;
240     int resample_pix_fmt;
241
242     int      resample_sample_fmt;
243     int      resample_sample_rate;
244     int      resample_channels;
245     uint64_t resample_channel_layout;
246
247     /* a pool of free buffers for decoded data */
248     FrameBuffer *buffer_pool;
249     int dr1;
250
251     /* decoded data from this stream goes into all those filters
252      * currently video and audio only */
253     InputFilter **filters;
254     int        nb_filters;
255 } InputStream;
256
257 typedef struct InputFile {
258     AVFormatContext *ctx;
259     int eof_reached;      /* true if eof reached */
260     int ist_index;        /* index of first stream in input_streams */
261     int buffer_size;      /* current total buffer size */
262     int64_t ts_offset;
263     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
264                              from ctx.nb_streams if new streams appear during av_read_frame() */
265     int rate_emu;
266 } InputFile;
267
268 typedef struct OutputStream {
269     int file_index;          /* file index */
270     int index;               /* stream index in the output file */
271     int source_index;        /* InputStream index */
272     AVStream *st;            /* stream in the output file */
273     int encoding_needed;     /* true if encoding needed for this stream */
274     int frame_number;
275     /* input pts and corresponding output pts
276        for A/V sync */
277     struct InputStream *sync_ist; /* input stream to sync against */
278     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
279     /* pts of the first frame encoded for this stream, used for limiting
280      * recording time */
281     int64_t first_pts;
282     AVBitStreamFilterContext *bitstream_filters;
283     AVCodec *enc;
284     int64_t max_frames;
285     AVFrame *filtered_frame;
286
287     /* video only */
288     AVRational frame_rate;
289     int force_fps;
290     int top_field_first;
291
292     float frame_aspect_ratio;
293     float last_quality;
294
295     /* forced key frames */
296     int64_t *forced_kf_pts;
297     int forced_kf_count;
298     int forced_kf_index;
299
300     /* audio only */
301     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
302     int audio_channels_mapped;           /* number of channels in audio_channels_map */
303
304     FILE *logfile;
305
306     OutputFilter *filter;
307     char *avfilter;
308
309     int64_t sws_flags;
310     int64_t swr_dither_method;
311     double swr_dither_scale;
312     AVDictionary *opts;
313     int is_past_recording_time;
314     int stream_copy;
315     const char *attachment_filename;
316     int copy_initial_nonkeyframes;
317
318     int keep_pix_fmt;
319 } OutputStream;
320
321
322 #if HAVE_TERMIOS_H
323
324 /* init terminal so that we can grab keys */
325 static struct termios oldtty;
326 static int restore_tty;
327 #endif
328
329 typedef struct OutputFile {
330     AVFormatContext *ctx;
331     AVDictionary *opts;
332     int ost_index;       /* index of the first stream in output_streams */
333     int64_t recording_time; /* desired length of the resulting file in microseconds */
334     int64_t start_time;     /* start time in microseconds */
335     uint64_t limit_filesize; /* filesize limit expressed in bytes */
336 } OutputFile;
337
338 static InputStream **input_streams = NULL;
339 static int        nb_input_streams = 0;
340 static InputFile   **input_files   = NULL;
341 static int        nb_input_files   = 0;
342
343 static OutputStream **output_streams = NULL;
344 static int         nb_output_streams = 0;
345 static OutputFile   **output_files   = NULL;
346 static int         nb_output_files   = 0;
347
348 static FilterGraph **filtergraphs;
349 int               nb_filtergraphs;
350
351 typedef struct OptionsContext {
352     /* input/output options */
353     int64_t start_time;
354     const char *format;
355
356     SpecifierOpt *codec_names;
357     int        nb_codec_names;
358     SpecifierOpt *audio_channels;
359     int        nb_audio_channels;
360     SpecifierOpt *audio_sample_rate;
361     int        nb_audio_sample_rate;
362     SpecifierOpt *frame_rates;
363     int        nb_frame_rates;
364     SpecifierOpt *frame_sizes;
365     int        nb_frame_sizes;
366     SpecifierOpt *frame_pix_fmts;
367     int        nb_frame_pix_fmts;
368
369     /* input options */
370     int64_t input_ts_offset;
371     int rate_emu;
372
373     SpecifierOpt *ts_scale;
374     int        nb_ts_scale;
375     SpecifierOpt *dump_attachment;
376     int        nb_dump_attachment;
377
378     /* output options */
379     StreamMap *stream_maps;
380     int     nb_stream_maps;
381     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
382     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
383     int metadata_global_manual;
384     int metadata_streams_manual;
385     int metadata_chapters_manual;
386     const char **attachments;
387     int       nb_attachments;
388
389     int chapters_input_file;
390
391     int64_t recording_time;
392     uint64_t limit_filesize;
393     float mux_preload;
394     float mux_max_delay;
395
396     int video_disable;
397     int audio_disable;
398     int subtitle_disable;
399     int data_disable;
400
401     /* indexed by output file stream index */
402     int   *streamid_map;
403     int nb_streamid_map;
404
405     SpecifierOpt *metadata;
406     int        nb_metadata;
407     SpecifierOpt *max_frames;
408     int        nb_max_frames;
409     SpecifierOpt *bitstream_filters;
410     int        nb_bitstream_filters;
411     SpecifierOpt *codec_tags;
412     int        nb_codec_tags;
413     SpecifierOpt *sample_fmts;
414     int        nb_sample_fmts;
415     SpecifierOpt *qscale;
416     int        nb_qscale;
417     SpecifierOpt *forced_key_frames;
418     int        nb_forced_key_frames;
419     SpecifierOpt *force_fps;
420     int        nb_force_fps;
421     SpecifierOpt *frame_aspect_ratios;
422     int        nb_frame_aspect_ratios;
423     SpecifierOpt *rc_overrides;
424     int        nb_rc_overrides;
425     SpecifierOpt *intra_matrices;
426     int        nb_intra_matrices;
427     SpecifierOpt *inter_matrices;
428     int        nb_inter_matrices;
429     SpecifierOpt *top_field_first;
430     int        nb_top_field_first;
431     SpecifierOpt *metadata_map;
432     int        nb_metadata_map;
433     SpecifierOpt *presets;
434     int        nb_presets;
435     SpecifierOpt *copy_initial_nonkeyframes;
436     int        nb_copy_initial_nonkeyframes;
437     SpecifierOpt *filters;
438     int        nb_filters;
439 } OptionsContext;
440
441 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
442
443 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
444 {\
445     int i, ret;\
446     for (i = 0; i < o->nb_ ## name; i++) {\
447         char *spec = o->name[i].specifier;\
448         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
449             outvar = o->name[i].u.type;\
450         else if (ret < 0)\
451             exit_program(1);\
452     }\
453 }
454
455 static int64_t getutime(void)
456 {
457 #if HAVE_GETRUSAGE
458     struct rusage rusage;
459
460     getrusage(RUSAGE_SELF, &rusage);
461     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
462 #elif HAVE_GETPROCESSTIMES
463     HANDLE proc;
464     FILETIME c, e, k, u;
465     proc = GetCurrentProcess();
466     GetProcessTimes(proc, &c, &e, &k, &u);
467     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
468 #else
469     return av_gettime();
470 #endif
471 }
472
473 static void update_benchmark(const char *fmt, ...)
474 {
475     if (do_benchmark_all) {
476         int64_t t = getutime();
477         va_list va;
478         char buf[1024];
479
480         if (fmt) {
481             va_start(va, fmt);
482             vsnprintf(buf, sizeof(buf), fmt, va);
483             va_end(va);
484             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
485         }
486         current_time = t;
487     }
488 }
489
490 static void reset_options(OptionsContext *o, int is_input)
491 {
492     const OptionDef *po = options;
493     OptionsContext bak= *o;
494     int i;
495
496     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
497     while (po->name) {
498         void *dst = (uint8_t*)o + po->u.off;
499
500         if (po->flags & OPT_SPEC) {
501             SpecifierOpt **so = dst;
502             int i, *count = (int*)(so + 1);
503             for (i = 0; i < *count; i++) {
504                 av_freep(&(*so)[i].specifier);
505                 if (po->flags & OPT_STRING)
506                     av_freep(&(*so)[i].u.str);
507             }
508             av_freep(so);
509             *count = 0;
510         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
511             av_freep(dst);
512         po++;
513     }
514
515     for (i = 0; i < o->nb_stream_maps; i++)
516         av_freep(&o->stream_maps[i].linklabel);
517     av_freep(&o->stream_maps);
518     av_freep(&o->audio_channel_maps);
519     av_freep(&o->streamid_map);
520
521     memset(o, 0, sizeof(*o));
522
523     if(is_input) o->recording_time = bak.recording_time;
524     else         o->recording_time = INT64_MAX;
525     o->mux_max_delay  = 0.7;
526     o->limit_filesize = UINT64_MAX;
527     o->chapters_input_file = INT_MAX;
528
529     uninit_opts();
530     init_opts();
531 }
532
533 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
534 {
535     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
536     int i, ret;
537     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
538     int h_chroma_shift, v_chroma_shift;
539     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
540     int w = s->width, h = s->height;
541
542     if (!buf)
543         return AVERROR(ENOMEM);
544
545     avcodec_align_dimensions(s, &w, &h);
546
547     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
548         w += 2*edge;
549         h += 2*edge;
550     }
551
552     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
553                               s->pix_fmt, 32)) < 0) {
554         av_freep(&buf);
555         return ret;
556     }
557     /* XXX this shouldn't be needed, but some tests break without this line
558      * those decoders are buggy and need to be fixed.
559      * the following tests fail:
560      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
561      */
562     memset(buf->base[0], 128, ret);
563
564     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
565     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
566         const int h_shift = i==0 ? 0 : h_chroma_shift;
567         const int v_shift = i==0 ? 0 : v_chroma_shift;
568         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
569             buf->data[i] = buf->base[i];
570         else
571             buf->data[i] = buf->base[i] +
572                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
573                                    (pixel_size*edge >> h_shift), 32);
574     }
575     buf->w       = s->width;
576     buf->h       = s->height;
577     buf->pix_fmt = s->pix_fmt;
578     buf->ist     = ist;
579
580     *pbuf = buf;
581     return 0;
582 }
583
584 static void free_buffer_pool(InputStream *ist)
585 {
586     FrameBuffer *buf = ist->buffer_pool;
587     while (buf) {
588         ist->buffer_pool = buf->next;
589         av_freep(&buf->base[0]);
590         av_free(buf);
591         buf = ist->buffer_pool;
592     }
593 }
594
595 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
596 {
597     av_assert0(buf->refcount > 0);
598     buf->refcount--;
599     if (!buf->refcount) {
600         FrameBuffer *tmp;
601         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
602             av_assert1(tmp != buf);
603         buf->next = ist->buffer_pool;
604         ist->buffer_pool = buf;
605     }
606 }
607
608 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
609 {
610     InputStream *ist = s->opaque;
611     FrameBuffer *buf;
612     int ret, i;
613
614     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
615         return -1;
616
617     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
618         return ret;
619
620     buf              = ist->buffer_pool;
621     ist->buffer_pool = buf->next;
622     buf->next        = NULL;
623     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
624         av_freep(&buf->base[0]);
625         av_free(buf);
626         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
627             return ret;
628     }
629     av_assert0(!buf->refcount);
630     buf->refcount++;
631
632     frame->opaque        = buf;
633     frame->type          = FF_BUFFER_TYPE_USER;
634     frame->extended_data = frame->data;
635     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
636     frame->width         = buf->w;
637     frame->height        = buf->h;
638     frame->format        = buf->pix_fmt;
639     frame->sample_aspect_ratio = s->sample_aspect_ratio;
640
641     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
642         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
643         frame->data[i]     = buf->data[i];
644         frame->linesize[i] = buf->linesize[i];
645     }
646
647     return 0;
648 }
649
650 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
651 {
652     InputStream *ist = s->opaque;
653     FrameBuffer *buf = frame->opaque;
654     int i;
655
656     if(frame->type!=FF_BUFFER_TYPE_USER)
657         return avcodec_default_release_buffer(s, frame);
658
659     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
660         frame->data[i] = NULL;
661
662     unref_buffer(ist, buf);
663 }
664
665 static void filter_release_buffer(AVFilterBuffer *fb)
666 {
667     FrameBuffer *buf = fb->priv;
668     av_free(fb);
669     unref_buffer(buf->ist, buf);
670 }
671
672 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
673 {
674     if (codec && codec->pix_fmts) {
675         const enum PixelFormat *p = codec->pix_fmts;
676         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
677         enum PixelFormat best= PIX_FMT_NONE;
678         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
679             if (st->codec->codec_id == CODEC_ID_MJPEG) {
680                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
681             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
682                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
683                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
684             }
685         }
686         for (; *p != PIX_FMT_NONE; p++) {
687             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
688             if (*p == target)
689                 break;
690         }
691         if (*p == PIX_FMT_NONE) {
692             if (target != PIX_FMT_NONE)
693                 av_log(NULL, AV_LOG_WARNING,
694                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
695                        av_pix_fmt_descriptors[target].name,
696                        codec->name,
697                        av_pix_fmt_descriptors[best].name);
698             return best;
699         }
700     }
701     return target;
702 }
703
704 static char *choose_pix_fmts(OutputStream *ost)
705 {
706      if (ost->keep_pix_fmt) {
707         if (ost->filter)
708             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
709                                             AVFILTER_AUTO_CONVERT_NONE);
710         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
711             return NULL;
712         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
713     }
714     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
715         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
716     } else if (ost->enc->pix_fmts) {
717         const enum PixelFormat *p;
718         AVIOContext *s = NULL;
719         uint8_t *ret;
720         int len;
721
722         if (avio_open_dyn_buf(&s) < 0)
723             exit_program(1);
724
725         p = ost->enc->pix_fmts;
726         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
727             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
728                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
729             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
730                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
731                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
732             }
733         }
734
735         for (; *p != PIX_FMT_NONE; p++) {
736             const char *name = av_get_pix_fmt_name(*p);
737             avio_printf(s, "%s:", name);
738         }
739         len = avio_close_dyn_buf(s, &ret);
740         ret[len - 1] = 0;
741         return ret;
742     } else
743         return NULL;
744 }
745
746 /**
747  * Define a function for building a string containing a list of
748  * allowed formats,
749  */
750 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
751 static char *choose_ ## var ## s(OutputStream *ost)                             \
752 {                                                                               \
753     if (ost->st->codec->var != none) {                                          \
754         get_name(ost->st->codec->var);                                          \
755         return av_strdup(name);                                                 \
756     } else if (ost->enc->supported_list) {                                      \
757         const type *p;                                                          \
758         AVIOContext *s = NULL;                                                  \
759         uint8_t *ret;                                                           \
760         int len;                                                                \
761                                                                                 \
762         if (avio_open_dyn_buf(&s) < 0)                                          \
763             exit_program(1);                                                    \
764                                                                                 \
765         for (p = ost->enc->supported_list; *p != none; p++) {                   \
766             get_name(*p);                                                       \
767             avio_printf(s, "%s" separator, name);                               \
768         }                                                                       \
769         len = avio_close_dyn_buf(s, &ret);                                      \
770         ret[len - 1] = 0;                                                       \
771         return ret;                                                             \
772     } else                                                                      \
773         return NULL;                                                            \
774 }
775
776 #define GET_PIX_FMT_NAME(pix_fmt)\
777     const char *name = av_get_pix_fmt_name(pix_fmt);
778
779 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
780 //                   GET_PIX_FMT_NAME, ":")
781
782 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
783     const char *name = av_get_sample_fmt_name(sample_fmt)
784
785 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
786                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
787
788 #define GET_SAMPLE_RATE_NAME(rate)\
789     char name[16];\
790     snprintf(name, sizeof(name), "%d", rate);
791
792 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
793                   GET_SAMPLE_RATE_NAME, ",")
794
795 #define GET_CH_LAYOUT_NAME(ch_layout)\
796     char name[16];\
797     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
798
799 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
800                   GET_CH_LAYOUT_NAME, ",")
801
802 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
803                                    AVFilterContext **out_filter)
804 {
805     InputStream  *ist = fg->inputs[0]->ist;
806     OutputStream *ost = fg->outputs[0]->ost;
807     AVCodecContext *codec  = ost->st->codec;
808     AVCodecContext *icodec = ist->st->codec;
809     char *sample_fmts, *sample_rates, *channel_layouts;
810     char args[256];
811     int ret;
812
813     avfilter_graph_free(&fg->graph);
814     if (!(fg->graph = avfilter_graph_alloc()))
815         return AVERROR(ENOMEM);
816
817     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
818              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
819              ist->st->time_base.den, icodec->sample_rate,
820              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
821     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
822                                        avfilter_get_by_name("abuffer"),
823                                        "src", args, NULL, fg->graph);
824     if (ret < 0)
825         return ret;
826
827     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
828                                        avfilter_get_by_name("abuffersink_old"),
829                                        "out", NULL, NULL, fg->graph);
830     if (ret < 0)
831         return ret;
832
833     *in_filter  = fg->inputs[0]->filter;
834     *out_filter = fg->outputs[0]->filter;
835
836     if (codec->channels && !codec->channel_layout)
837         codec->channel_layout = av_get_default_channel_layout(codec->channels);
838
839     sample_fmts     = choose_sample_fmts(ost);
840     sample_rates    = choose_sample_rates(ost);
841     channel_layouts = choose_channel_layouts(ost);
842     if (sample_fmts || sample_rates || channel_layouts) {
843         AVFilterContext *format;
844         char args[256];
845         int len = 0;
846
847         if (sample_fmts)
848             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
849                             sample_fmts);
850         if (sample_rates)
851             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
852                             sample_rates);
853         if (channel_layouts)
854             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
855                             channel_layouts);
856         args[len - 1] = 0;
857
858         av_freep(&sample_fmts);
859         av_freep(&sample_rates);
860         av_freep(&channel_layouts);
861
862         ret = avfilter_graph_create_filter(&format,
863                                            avfilter_get_by_name("aformat"),
864                                            "aformat", args, NULL, fg->graph);
865         if (ret < 0)
866             return ret;
867
868         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
869         if (ret < 0)
870             return ret;
871
872         *out_filter = format;
873     }
874
875     if (audio_sync_method > 0) {
876         AVFilterContext *aswr;
877         char args[256] = {0};
878
879         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
880
881         if (audio_sync_method > 1)
882             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)icodec->sample_rate);
883
884         av_log(NULL, AV_LOG_INFO, "-async %d is forwarded to lavfi similarly to -af aresample=%s\n", audio_sync_method, args);
885
886         ret = avfilter_graph_create_filter(&aswr, avfilter_get_by_name("aresample"),
887                                            "aresample", args, NULL, fg->graph);
888         if (ret < 0)
889             return ret;
890
891         ret = avfilter_link(*in_filter, 0, aswr, 0);
892         if (ret < 0)
893             return ret;
894
895         *in_filter = aswr;
896     }
897
898 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
899     AVFilterContext *filt_ctx;                                              \
900                                                                             \
901     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
902            "similarly to -af " filter_name "=%s.\n", arg);                  \
903                                                                             \
904     ret = avfilter_graph_create_filter(&filt_ctx,                           \
905                                        avfilter_get_by_name(filter_name),   \
906                                        filter_name, arg, NULL, fg->graph);  \
907     if (ret < 0)                                                            \
908         return ret;                                                         \
909                                                                             \
910     ret = avfilter_link(*in_filter, 0, filt_ctx, 0);                        \
911     if (ret < 0)                                                            \
912         return ret;                                                         \
913                                                                             \
914     *in_filter = filt_ctx;                                                  \
915 } while (0)
916
917     if (ost->audio_channels_mapped) {
918         int i;
919         AVBPrint pan_buf;
920
921         av_bprint_init(&pan_buf, 256, 8192);
922         av_bprintf(&pan_buf, "0x%"PRIx64,
923                    av_get_default_channel_layout(ost->audio_channels_mapped));
924         for (i = 0; i < ost->audio_channels_mapped; i++)
925             if (ost->audio_channels_map[i] != -1)
926                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
927
928         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
929         av_bprint_finalize(&pan_buf, NULL);
930     }
931
932     if (audio_volume != 256) {
933         char args[256];
934
935         snprintf(args, sizeof(args), "%lf", audio_volume / 256.);
936         AUTO_INSERT_FILTER("-vol", "volume", args);
937     }
938
939     return 0;
940 }
941
942 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
943                                    AVFilterContext **out_filter)
944 {
945     InputStream  *ist = fg->inputs[0]->ist;
946     OutputStream *ost = fg->outputs[0]->ost;
947     AVFilterContext *filter;
948     AVCodecContext *codec = ost->st->codec;
949     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
950     char *pix_fmts;
951     AVRational sample_aspect_ratio;
952     char args[255];
953     int ret;
954
955     if (ist->st->sample_aspect_ratio.num) {
956         sample_aspect_ratio = ist->st->sample_aspect_ratio;
957     } else
958         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
959
960     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
961              ist->st->codec->height, ist->st->codec->pix_fmt,
962              ist->st->time_base.num, ist->st->time_base.den,
963              sample_aspect_ratio.num, sample_aspect_ratio.den,
964              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
965
966     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
967                                        avfilter_get_by_name("buffer"),
968                                        "src", args, NULL, fg->graph);
969     if (ret < 0)
970         return ret;
971
972 #if FF_API_OLD_VSINK_API
973     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
974                                        avfilter_get_by_name("buffersink"),
975                                        "out", NULL, NULL, fg->graph);
976 #else
977     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
978                                        avfilter_get_by_name("buffersink"),
979                                        "out", NULL, buffersink_params, fg->graph);
980 #endif
981     av_freep(&buffersink_params);
982
983     if (ret < 0)
984         return ret;
985     *in_filter  = fg->inputs[0]->filter;
986     *out_filter = fg->outputs[0]->filter;
987
988     if (codec->width || codec->height) {
989         snprintf(args, 255, "%d:%d:flags=0x%X",
990                  codec->width,
991                  codec->height,
992                  (unsigned)ost->sws_flags);
993         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
994                                                 NULL, args, NULL, fg->graph)) < 0)
995             return ret;
996         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
997             return ret;
998         *in_filter = filter;
999     }
1000
1001     if ((pix_fmts = choose_pix_fmts(ost))) {
1002         if ((ret = avfilter_graph_create_filter(&filter,
1003                                                 avfilter_get_by_name("format"),
1004                                                 "format", pix_fmts, NULL,
1005                                                 fg->graph)) < 0)
1006             return ret;
1007         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
1008             return ret;
1009
1010         *out_filter = filter;
1011         av_freep(&pix_fmts);
1012     }
1013
1014     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1015     fg->graph->scale_sws_opts = av_strdup(args);
1016
1017     return 0;
1018 }
1019
1020 static int configure_simple_filtergraph(FilterGraph *fg)
1021 {
1022     OutputStream *ost = fg->outputs[0]->ost;
1023     AVFilterContext *in_filter, *out_filter;
1024     int ret;
1025
1026     avfilter_graph_free(&fg->graph);
1027     fg->graph = avfilter_graph_alloc();
1028     if (!fg->graph)
1029         return AVERROR(ENOMEM);
1030
1031     switch (ost->st->codec->codec_type) {
1032     case AVMEDIA_TYPE_VIDEO:
1033         ret = configure_video_filters(fg, &in_filter, &out_filter);
1034         break;
1035     case AVMEDIA_TYPE_AUDIO:
1036         ret = configure_audio_filters(fg, &in_filter, &out_filter);
1037         break;
1038     default: av_assert0(0);
1039     }
1040     if (ret < 0)
1041         return ret;
1042
1043     if (ost->avfilter) {
1044         AVFilterInOut *outputs = avfilter_inout_alloc();
1045         AVFilterInOut *inputs  = avfilter_inout_alloc();
1046
1047         outputs->name    = av_strdup("in");
1048         outputs->filter_ctx = in_filter;
1049         outputs->pad_idx = 0;
1050         outputs->next    = NULL;
1051
1052         inputs->name    = av_strdup("out");
1053         inputs->filter_ctx = out_filter;
1054         inputs->pad_idx = 0;
1055         inputs->next    = NULL;
1056
1057         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
1058             return ret;
1059         av_freep(&ost->avfilter);
1060     } else {
1061         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
1062             return ret;
1063     }
1064
1065     if (ost->keep_pix_fmt)
1066         avfilter_graph_set_auto_convert(fg->graph,
1067                                         AVFILTER_AUTO_CONVERT_NONE);
1068
1069     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1070         return ret;
1071
1072     ost->filter = fg->outputs[0];
1073
1074     return 0;
1075 }
1076
1077 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1078 {
1079     FilterGraph *fg = av_mallocz(sizeof(*fg));
1080
1081     if (!fg)
1082         exit_program(1);
1083     fg->index = nb_filtergraphs;
1084
1085     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1086                              fg->nb_outputs + 1);
1087     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1088         exit_program(1);
1089     fg->outputs[0]->ost   = ost;
1090     fg->outputs[0]->graph = fg;
1091
1092     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1093                             fg->nb_inputs + 1);
1094     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1095         exit_program(1);
1096     fg->inputs[0]->ist   = ist;
1097     fg->inputs[0]->graph = fg;
1098
1099     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1100                               &ist->nb_filters, ist->nb_filters + 1);
1101     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1102
1103     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1104                               &nb_filtergraphs, nb_filtergraphs + 1);
1105     filtergraphs[nb_filtergraphs - 1] = fg;
1106
1107     return fg;
1108 }
1109
1110 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1111 {
1112     InputStream *ist = NULL;
1113     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1114     int i;
1115
1116     // TODO: support other filter types
1117     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
1118         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
1119                "currently.\n");
1120         exit_program(1);
1121     }
1122
1123     if (in->name) {
1124         AVFormatContext *s;
1125         AVStream       *st = NULL;
1126         char *p;
1127         int file_idx = strtol(in->name, &p, 0);
1128
1129         if (file_idx < 0 || file_idx >= nb_input_files) {
1130             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1131                    file_idx, fg->graph_desc);
1132             exit_program(1);
1133         }
1134         s = input_files[file_idx]->ctx;
1135
1136         for (i = 0; i < s->nb_streams; i++) {
1137             if (s->streams[i]->codec->codec_type != type)
1138                 continue;
1139             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1140                 st = s->streams[i];
1141                 break;
1142             }
1143         }
1144         if (!st) {
1145             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1146                    "matches no streams.\n", p, fg->graph_desc);
1147             exit_program(1);
1148         }
1149         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1150     } else {
1151         /* find the first unused stream of corresponding type */
1152         for (i = 0; i < nb_input_streams; i++) {
1153             ist = input_streams[i];
1154             if (ist->st->codec->codec_type == type && ist->discard)
1155                 break;
1156         }
1157         if (i == nb_input_streams) {
1158             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1159                    "unlabeled input pad %d on filter %s", in->pad_idx,
1160                    in->filter_ctx->name);
1161             exit_program(1);
1162         }
1163     }
1164     ist->discard         = 0;
1165     ist->decoding_needed = 1;
1166     ist->st->discard = AVDISCARD_NONE;
1167
1168     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1169                             &fg->nb_inputs, fg->nb_inputs + 1);
1170     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1171         exit_program(1);
1172     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1173     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1174
1175     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1176                               &ist->nb_filters, ist->nb_filters + 1);
1177     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1178 }
1179
1180 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1181 {
1182     char *pix_fmts;
1183     AVCodecContext *codec = ofilter->ost->st->codec;
1184     AVFilterContext *last_filter = out->filter_ctx;
1185     int pad_idx = out->pad_idx;
1186     int ret;
1187     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1188
1189 #if FF_API_OLD_VSINK_API
1190     ret = avfilter_graph_create_filter(&ofilter->filter,
1191                                        avfilter_get_by_name("buffersink"),
1192                                        "out", NULL, NULL, fg->graph);
1193 #else
1194     ret = avfilter_graph_create_filter(&ofilter->filter,
1195                                        avfilter_get_by_name("buffersink"),
1196                                        "out", NULL, buffersink_params, fg->graph);
1197 #endif
1198     av_freep(&buffersink_params);
1199
1200     if (ret < 0)
1201         return ret;
1202
1203     if (codec->width || codec->height) {
1204         char args[255];
1205         AVFilterContext *filter;
1206
1207         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1208                  codec->width,
1209                  codec->height,
1210                  (unsigned)ofilter->ost->sws_flags);
1211         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1212                                                 NULL, args, NULL, fg->graph)) < 0)
1213             return ret;
1214         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1215             return ret;
1216
1217         last_filter = filter;
1218         pad_idx = 0;
1219     }
1220
1221     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1222         AVFilterContext *filter;
1223         if ((ret = avfilter_graph_create_filter(&filter,
1224                                                 avfilter_get_by_name("format"),
1225                                                 "format", pix_fmts, NULL,
1226                                                 fg->graph)) < 0)
1227             return ret;
1228         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1229             return ret;
1230
1231         last_filter = filter;
1232         pad_idx     = 0;
1233         av_freep(&pix_fmts);
1234     }
1235
1236     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1237         return ret;
1238
1239     return 0;
1240 }
1241
1242 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1243 {
1244     OutputStream *ost = ofilter->ost;
1245     AVCodecContext *codec  = ost->st->codec;
1246     AVFilterContext *last_filter = out->filter_ctx;
1247     int pad_idx = out->pad_idx;
1248     char *sample_fmts, *sample_rates, *channel_layouts;
1249     int ret;
1250
1251     ret = avfilter_graph_create_filter(&ofilter->filter,
1252                                        avfilter_get_by_name("abuffersink"),
1253                                        "out", NULL, NULL, fg->graph);
1254     if (ret < 0)
1255         return ret;
1256
1257     if (codec->channels && !codec->channel_layout)
1258         codec->channel_layout = av_get_default_channel_layout(codec->channels);
1259
1260     sample_fmts     = choose_sample_fmts(ost);
1261     sample_rates    = choose_sample_rates(ost);
1262     channel_layouts = choose_channel_layouts(ost);
1263     if (sample_fmts || sample_rates || channel_layouts) {
1264         AVFilterContext *format;
1265         char args[256];
1266         int len = 0;
1267
1268         if (sample_fmts)
1269             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
1270                             sample_fmts);
1271         if (sample_rates)
1272             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
1273                             sample_rates);
1274         if (channel_layouts)
1275             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
1276                             channel_layouts);
1277         args[len - 1] = 0;
1278
1279         av_freep(&sample_fmts);
1280         av_freep(&sample_rates);
1281         av_freep(&channel_layouts);
1282
1283         ret = avfilter_graph_create_filter(&format,
1284                                            avfilter_get_by_name("aformat"),
1285                                            "aformat", args, NULL, fg->graph);
1286         if (ret < 0)
1287             return ret;
1288
1289         ret = avfilter_link(last_filter, pad_idx, format, 0);
1290         if (ret < 0)
1291             return ret;
1292
1293         last_filter = format;
1294         pad_idx = 0;
1295     }
1296
1297     if (audio_sync_method > 0) {
1298         AVFilterContext *async;
1299         char args[256];
1300         int  len = 0;
1301
1302         av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
1303                "asyncts audio filter instead.\n");
1304
1305         if (audio_sync_method > 1)
1306             len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
1307                             "max_comp=%d:", audio_sync_method);
1308         snprintf(args + len, sizeof(args) - len, "min_delta=%f",
1309                  audio_drift_threshold);
1310
1311         ret = avfilter_graph_create_filter(&async,
1312                                            avfilter_get_by_name("asyncts"),
1313                                            "async", args, NULL, fg->graph);
1314         if (ret < 0)
1315             return ret;
1316
1317         ret = avfilter_link(last_filter, pad_idx, async, 0);
1318         if (ret < 0)
1319             return ret;
1320
1321         last_filter = async;
1322         pad_idx = 0;
1323     }
1324
1325     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1326         return ret;
1327
1328     return 0;
1329 }
1330
1331 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1332 {
1333     switch (out->filter_ctx->output_pads[out->pad_idx].type) {
1334     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
1335     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
1336     default: av_assert0(0);
1337     }
1338 }
1339
1340 static int configure_complex_filter(FilterGraph *fg)
1341 {
1342     AVFilterInOut *inputs, *outputs, *cur;
1343     int ret, i, init = !fg->graph;
1344
1345     avfilter_graph_free(&fg->graph);
1346     if (!(fg->graph = avfilter_graph_alloc()))
1347         return AVERROR(ENOMEM);
1348
1349     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1350         return ret;
1351
1352     for (cur = inputs; init && cur; cur = cur->next)
1353         init_input_filter(fg, cur);
1354
1355     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1356         InputFilter *ifilter = fg->inputs[i];
1357         InputStream     *ist = ifilter->ist;
1358         AVRational       sar;
1359         AVFilter     *filter;
1360         char            args[255];
1361
1362         switch (cur->filter_ctx->input_pads[cur->pad_idx].type) {
1363         case AVMEDIA_TYPE_VIDEO:
1364             sar = ist->st->sample_aspect_ratio.num ?
1365                   ist->st->sample_aspect_ratio :
1366                   ist->st->codec->sample_aspect_ratio;
1367             snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1368                      ist->st->codec->height, ist->st->codec->pix_fmt,
1369                      ist->st->time_base.num, ist->st->time_base.den,
1370                      sar.num, sar.den);
1371             filter = avfilter_get_by_name("buffer");
1372             break;
1373         case AVMEDIA_TYPE_AUDIO:
1374             snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:"
1375                      "sample_fmt=%s:channel_layout=0x%"PRIx64,
1376                      ist->st->time_base.num, ist->st->time_base.den,
1377                      ist->st->codec->sample_rate,
1378                      av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1379                      ist->st->codec->channel_layout);
1380             filter = avfilter_get_by_name("abuffer");
1381             break;
1382         default:
1383             av_assert0(0);
1384         }
1385
1386         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1387                                                 filter, cur->name,
1388                                                 args, NULL, fg->graph)) < 0)
1389             return ret;
1390         if ((ret = avfilter_link(ifilter->filter, 0,
1391                                  cur->filter_ctx, cur->pad_idx)) < 0)
1392             return ret;
1393     }
1394     avfilter_inout_free(&inputs);
1395
1396     if (!init) {
1397         /* we already know the mappings between lavfi outputs and output streams,
1398          * so we can finish the setup */
1399         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1400             configure_output_filter(fg, fg->outputs[i], cur);
1401         avfilter_inout_free(&outputs);
1402
1403         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1404             return ret;
1405     } else {
1406         /* wait until output mappings are processed */
1407         for (cur = outputs; cur;) {
1408             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1409                                      &fg->nb_outputs, fg->nb_outputs + 1);
1410             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1411                 exit_program(1);
1412             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1413             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1414             cur = cur->next;
1415             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1416         }
1417     }
1418
1419     return 0;
1420 }
1421
1422 static int configure_complex_filters(void)
1423 {
1424     int i, ret = 0;
1425
1426     for (i = 0; i < nb_filtergraphs; i++)
1427         if (!filtergraphs[i]->graph &&
1428             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1429             return ret;
1430     return 0;
1431 }
1432
1433 static int configure_filtergraph(FilterGraph *fg)
1434 {
1435     return fg->graph_desc ? configure_complex_filter(fg) :
1436                             configure_simple_filtergraph(fg);
1437 }
1438
1439 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1440 {
1441     int i;
1442     for (i = 0; i < fg->nb_inputs; i++)
1443         if (fg->inputs[i]->ist == ist)
1444             return 1;
1445     return 0;
1446 }
1447
1448 static void term_exit(void)
1449 {
1450     av_log(NULL, AV_LOG_QUIET, "%s", "");
1451 #if HAVE_TERMIOS_H
1452     if(restore_tty)
1453         tcsetattr (0, TCSANOW, &oldtty);
1454 #endif
1455 }
1456
1457 static volatile int received_sigterm = 0;
1458
1459 static void sigterm_handler(int sig)
1460 {
1461     received_sigterm = sig;
1462     received_nb_signals++;
1463     term_exit();
1464     if(received_nb_signals > 3)
1465         exit(123);
1466 }
1467
1468 static void term_init(void)
1469 {
1470 #if HAVE_TERMIOS_H
1471     if(!run_as_daemon){
1472         struct termios tty;
1473
1474         if (tcgetattr (0, &tty) == 0) {
1475             oldtty = tty;
1476             restore_tty = 1;
1477             atexit(term_exit);
1478
1479             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1480                              |INLCR|IGNCR|ICRNL|IXON);
1481             tty.c_oflag |= OPOST;
1482             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1483             tty.c_cflag &= ~(CSIZE|PARENB);
1484             tty.c_cflag |= CS8;
1485             tty.c_cc[VMIN] = 1;
1486             tty.c_cc[VTIME] = 0;
1487
1488             tcsetattr (0, TCSANOW, &tty);
1489         }
1490         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1491     }
1492 #endif
1493     avformat_network_deinit();
1494
1495     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1496     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1497 #ifdef SIGXCPU
1498     signal(SIGXCPU, sigterm_handler);
1499 #endif
1500 }
1501
1502 /* read a key without blocking */
1503 static int read_key(void)
1504 {
1505     unsigned char ch;
1506 #if HAVE_TERMIOS_H
1507     int n = 1;
1508     struct timeval tv;
1509     fd_set rfds;
1510
1511     FD_ZERO(&rfds);
1512     FD_SET(0, &rfds);
1513     tv.tv_sec = 0;
1514     tv.tv_usec = 0;
1515     n = select(1, &rfds, NULL, NULL, &tv);
1516     if (n > 0) {
1517         n = read(0, &ch, 1);
1518         if (n == 1)
1519             return ch;
1520
1521         return n;
1522     }
1523 #elif HAVE_KBHIT
1524 #    if HAVE_PEEKNAMEDPIPE
1525     static int is_pipe;
1526     static HANDLE input_handle;
1527     DWORD dw, nchars;
1528     if(!input_handle){
1529         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1530         is_pipe = !GetConsoleMode(input_handle, &dw);
1531     }
1532
1533     if (stdin->_cnt > 0) {
1534         read(0, &ch, 1);
1535         return ch;
1536     }
1537     if (is_pipe) {
1538         /* When running under a GUI, you will end here. */
1539         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1540             return -1;
1541         //Read it
1542         if(nchars != 0) {
1543             read(0, &ch, 1);
1544             return ch;
1545         }else{
1546             return -1;
1547         }
1548     }
1549 #    endif
1550     if(kbhit())
1551         return(getch());
1552 #endif
1553     return -1;
1554 }
1555
1556 static int decode_interrupt_cb(void *ctx)
1557 {
1558     return received_nb_signals > 1;
1559 }
1560
1561 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1562
1563 void av_noreturn exit_program(int ret)
1564 {
1565     int i, j;
1566
1567     for (i = 0; i < nb_filtergraphs; i++) {
1568         avfilter_graph_free(&filtergraphs[i]->graph);
1569         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1570             av_freep(&filtergraphs[i]->inputs[j]);
1571         av_freep(&filtergraphs[i]->inputs);
1572         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1573             av_freep(&filtergraphs[i]->outputs[j]);
1574         av_freep(&filtergraphs[i]->outputs);
1575         av_freep(&filtergraphs[i]);
1576     }
1577     av_freep(&filtergraphs);
1578
1579     /* close files */
1580     for (i = 0; i < nb_output_files; i++) {
1581         AVFormatContext *s = output_files[i]->ctx;
1582         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1583             avio_close(s->pb);
1584         avformat_free_context(s);
1585         av_dict_free(&output_files[i]->opts);
1586         av_freep(&output_files[i]);
1587     }
1588     for (i = 0; i < nb_output_streams; i++) {
1589         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1590         while (bsfc) {
1591             AVBitStreamFilterContext *next = bsfc->next;
1592             av_bitstream_filter_close(bsfc);
1593             bsfc = next;
1594         }
1595         output_streams[i]->bitstream_filters = NULL;
1596
1597         av_freep(&output_streams[i]->filtered_frame);
1598         av_freep(&output_streams[i]);
1599     }
1600     for (i = 0; i < nb_input_files; i++) {
1601         avformat_close_input(&input_files[i]->ctx);
1602         av_freep(&input_files[i]);
1603     }
1604     for (i = 0; i < nb_input_streams; i++) {
1605         av_freep(&input_streams[i]->decoded_frame);
1606         av_dict_free(&input_streams[i]->opts);
1607         free_buffer_pool(input_streams[i]);
1608         av_freep(&input_streams[i]->filters);
1609         av_freep(&input_streams[i]);
1610     }
1611
1612     if (vstats_file)
1613         fclose(vstats_file);
1614     av_free(vstats_filename);
1615
1616     av_freep(&input_streams);
1617     av_freep(&input_files);
1618     av_freep(&output_streams);
1619     av_freep(&output_files);
1620
1621     uninit_opts();
1622
1623     avfilter_uninit();
1624     avformat_network_deinit();
1625
1626     if (received_sigterm) {
1627         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1628                (int) received_sigterm);
1629         exit (255);
1630     }
1631
1632     exit(ret);
1633 }
1634
1635 static void assert_avoptions(AVDictionary *m)
1636 {
1637     AVDictionaryEntry *t;
1638     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1639         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1640         exit_program(1);
1641     }
1642 }
1643
1644 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1645 {
1646     const char *codec_string = encoder ? "encoder" : "decoder";
1647     AVCodec *codec;
1648     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1649         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1650         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1651                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1652                 codec_string, c->codec->name);
1653         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1654         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1655             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1656                    codec_string, codec->name);
1657         exit_program(1);
1658     }
1659 }
1660
1661 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1662 {
1663     if (codec && codec->sample_fmts) {
1664         const enum AVSampleFormat *p = codec->sample_fmts;
1665         for (; *p != -1; p++) {
1666             if (*p == st->codec->sample_fmt)
1667                 break;
1668         }
1669         if (*p == -1) {
1670             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1671                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1672             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1673             av_log(NULL, AV_LOG_WARNING,
1674                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1675                    av_get_sample_fmt_name(st->codec->sample_fmt),
1676                    codec->name,
1677                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1678             st->codec->sample_fmt = codec->sample_fmts[0];
1679         }
1680     }
1681 }
1682
1683 static double
1684 get_sync_ipts(const OutputStream *ost, int64_t pts)
1685 {
1686     OutputFile *of = output_files[ost->file_index];
1687     return (double)(pts - of->start_time) / AV_TIME_BASE;
1688 }
1689
1690 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1691 {
1692     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1693     AVCodecContext          *avctx = ost->st->codec;
1694     int ret;
1695
1696     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1697         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1698         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1699
1700     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1701         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1702         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1703             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1704             pkt->pts = pkt->dts = max;
1705         }
1706     }
1707
1708     /*
1709      * Audio encoders may split the packets --  #frames in != #packets out.
1710      * But there is no reordering, so we can limit the number of output packets
1711      * by simply dropping them here.
1712      * Counting encoded video frames needs to be done separately because of
1713      * reordering, see do_video_out()
1714      */
1715     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1716         if (ost->frame_number >= ost->max_frames) {
1717             av_free_packet(pkt);
1718             return;
1719         }
1720         ost->frame_number++;
1721     }
1722
1723     while (bsfc) {
1724         AVPacket new_pkt = *pkt;
1725         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1726                                            &new_pkt.data, &new_pkt.size,
1727                                            pkt->data, pkt->size,
1728                                            pkt->flags & AV_PKT_FLAG_KEY);
1729         if (a > 0) {
1730             av_free_packet(pkt);
1731             new_pkt.destruct = av_destruct_packet;
1732         } else if (a < 0) {
1733             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1734                    bsfc->filter->name, pkt->stream_index,
1735                    avctx->codec ? avctx->codec->name : "copy");
1736             print_error("", a);
1737             if (exit_on_error)
1738                 exit_program(1);
1739         }
1740         *pkt = new_pkt;
1741
1742         bsfc = bsfc->next;
1743     }
1744
1745     pkt->stream_index = ost->index;
1746     ret = av_interleaved_write_frame(s, pkt);
1747     if (ret < 0) {
1748         print_error("av_interleaved_write_frame()", ret);
1749         exit_program(1);
1750     }
1751 }
1752
1753 static int check_recording_time(OutputStream *ost)
1754 {
1755     OutputFile *of = output_files[ost->file_index];
1756
1757     if (of->recording_time != INT64_MAX &&
1758         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1759                       AV_TIME_BASE_Q) >= 0) {
1760         ost->is_past_recording_time = 1;
1761         return 0;
1762     }
1763     return 1;
1764 }
1765
1766 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1767                          AVFrame *frame)
1768 {
1769     AVCodecContext *enc = ost->st->codec;
1770     AVPacket pkt;
1771     int got_packet = 0;
1772
1773     av_init_packet(&pkt);
1774     pkt.data = NULL;
1775     pkt.size = 0;
1776 #if 0
1777     if (!check_recording_time(ost))
1778         return;
1779 #endif
1780     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1781         frame->pts = ost->sync_opts;
1782     ost->sync_opts = frame->pts + frame->nb_samples;
1783
1784     av_assert0(pkt.size || !pkt.data);
1785     update_benchmark(NULL);
1786     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1787         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1788         exit_program(1);
1789     }
1790     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1791
1792     if (got_packet) {
1793         if (pkt.pts != AV_NOPTS_VALUE)
1794             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1795         if (pkt.dts != AV_NOPTS_VALUE)
1796             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1797         if (pkt.duration > 0)
1798             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1799
1800         if (debug_ts) {
1801             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1802                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1803                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1804                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1805         }
1806
1807         write_frame(s, &pkt, ost);
1808
1809         audio_size += pkt.size;
1810         av_free_packet(&pkt);
1811     }
1812 }
1813
1814 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1815 {
1816     AVCodecContext *dec;
1817     AVPicture *picture2;
1818     AVPicture picture_tmp;
1819     uint8_t *buf = 0;
1820
1821     dec = ist->st->codec;
1822
1823     /* deinterlace : must be done before any resize */
1824     if (do_deinterlace) {
1825         int size;
1826
1827         /* create temporary picture */
1828         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1829         buf  = av_malloc(size);
1830         if (!buf)
1831             return;
1832
1833         picture2 = &picture_tmp;
1834         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1835
1836         if (avpicture_deinterlace(picture2, picture,
1837                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1838             /* if error, do not deinterlace */
1839             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1840             av_free(buf);
1841             buf = NULL;
1842             picture2 = picture;
1843         }
1844     } else {
1845         picture2 = picture;
1846     }
1847
1848     if (picture != picture2)
1849         *picture = *picture2;
1850     *bufp = buf;
1851 }
1852
1853 static void do_subtitle_out(AVFormatContext *s,
1854                             OutputStream *ost,
1855                             InputStream *ist,
1856                             AVSubtitle *sub,
1857                             int64_t pts)
1858 {
1859     static uint8_t *subtitle_out = NULL;
1860     int subtitle_out_max_size = 1024 * 1024;
1861     int subtitle_out_size, nb, i;
1862     AVCodecContext *enc;
1863     AVPacket pkt;
1864
1865     if (pts == AV_NOPTS_VALUE) {
1866         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1867         if (exit_on_error)
1868             exit_program(1);
1869         return;
1870     }
1871
1872     enc = ost->st->codec;
1873
1874     if (!subtitle_out) {
1875         subtitle_out = av_malloc(subtitle_out_max_size);
1876     }
1877
1878     /* Note: DVB subtitle need one packet to draw them and one other
1879        packet to clear them */
1880     /* XXX: signal it in the codec context ? */
1881     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1882         nb = 2;
1883     else
1884         nb = 1;
1885
1886     for (i = 0; i < nb; i++) {
1887         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1888
1889         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1890         // start_display_time is required to be 0
1891         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1892         sub->end_display_time  -= sub->start_display_time;
1893         sub->start_display_time = 0;
1894         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1895                                                     subtitle_out_max_size, sub);
1896         if (subtitle_out_size < 0) {
1897             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1898             exit_program(1);
1899         }
1900
1901         av_init_packet(&pkt);
1902         pkt.data = subtitle_out;
1903         pkt.size = subtitle_out_size;
1904         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1905         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1906             /* XXX: the pts correction is handled here. Maybe handling
1907                it in the codec would be better */
1908             if (i == 0)
1909                 pkt.pts += 90 * sub->start_display_time;
1910             else
1911                 pkt.pts += 90 * sub->end_display_time;
1912         }
1913         write_frame(s, &pkt, ost);
1914     }
1915 }
1916
1917 static void do_video_out(AVFormatContext *s,
1918                          OutputStream *ost,
1919                          AVFrame *in_picture,
1920                          float quality)
1921 {
1922     int ret, format_video_sync;
1923     AVPacket pkt;
1924     AVCodecContext *enc = ost->st->codec;
1925     int nb_frames, i;
1926     double sync_ipts, delta;
1927     double duration = 0;
1928     int frame_size = 0;
1929     InputStream *ist = NULL;
1930
1931     if (ost->source_index >= 0)
1932         ist = input_streams[ost->source_index];
1933
1934     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1935         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1936
1937     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1938     delta = sync_ipts - ost->sync_opts + duration;
1939
1940     /* by default, we output a single frame */
1941     nb_frames = 1;
1942
1943     format_video_sync = video_sync_method;
1944     if (format_video_sync == VSYNC_AUTO)
1945         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1946
1947     switch (format_video_sync) {
1948     case VSYNC_CFR:
1949         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1950         if (delta < -1.1)
1951             nb_frames = 0;
1952         else if (delta > 1.1)
1953             nb_frames = lrintf(delta);
1954         break;
1955     case VSYNC_VFR:
1956         if (delta <= -0.6)
1957             nb_frames = 0;
1958         else if (delta > 0.6)
1959             ost->sync_opts = lrint(sync_ipts);
1960         break;
1961     case VSYNC_DROP:
1962     case VSYNC_PASSTHROUGH:
1963         ost->sync_opts = lrint(sync_ipts);
1964         break;
1965     default:
1966         av_assert0(0);
1967     }
1968
1969     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1970     if (nb_frames == 0) {
1971         nb_frames_drop++;
1972         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1973         return;
1974     } else if (nb_frames > 1) {
1975         nb_frames_dup += nb_frames - 1;
1976         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1977     }
1978
1979
1980 duplicate_frame:
1981     av_init_packet(&pkt);
1982     pkt.data = NULL;
1983     pkt.size = 0;
1984
1985     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1986         enc->codec->id == CODEC_ID_RAWVIDEO) {
1987         /* raw pictures are written as AVPicture structure to
1988            avoid any copies. We support temporarily the older
1989            method. */
1990         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1991         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1992         pkt.data   = (uint8_t *)in_picture;
1993         pkt.size   =  sizeof(AVPicture);
1994         pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1995         pkt.flags |= AV_PKT_FLAG_KEY;
1996
1997         write_frame(s, &pkt, ost);
1998     } else {
1999         int got_packet;
2000         AVFrame big_picture;
2001
2002         big_picture = *in_picture;
2003         /* better than nothing: use input picture interlaced
2004            settings */
2005         big_picture.interlaced_frame = in_picture->interlaced_frame;
2006         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
2007             if (ost->top_field_first == -1)
2008                 big_picture.top_field_first = in_picture->top_field_first;
2009             else
2010                 big_picture.top_field_first = !!ost->top_field_first;
2011         }
2012
2013         /* handles same_quant here. This is not correct because it may
2014            not be a global option */
2015         big_picture.quality = quality;
2016         if (!enc->me_threshold)
2017             big_picture.pict_type = 0;
2018         big_picture.pts = ost->sync_opts;
2019         if (ost->forced_kf_index < ost->forced_kf_count &&
2020             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
2021             big_picture.pict_type = AV_PICTURE_TYPE_I;
2022             ost->forced_kf_index++;
2023         }
2024         update_benchmark(NULL);
2025         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
2026         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
2027         if (ret < 0) {
2028             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
2029             exit_program(1);
2030         }
2031
2032         if (got_packet) {
2033             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
2034                 pkt.pts = ost->sync_opts;
2035
2036             if (pkt.pts != AV_NOPTS_VALUE)
2037                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2038             if (pkt.dts != AV_NOPTS_VALUE)
2039                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2040
2041             if (debug_ts) {
2042                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
2043                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
2044                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
2045                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
2046             }
2047
2048             write_frame(s, &pkt, ost);
2049             frame_size = pkt.size;
2050             video_size += pkt.size;
2051             av_free_packet(&pkt);
2052
2053             /* if two pass, output log */
2054             if (ost->logfile && enc->stats_out) {
2055                 fprintf(ost->logfile, "%s", enc->stats_out);
2056             }
2057         }
2058     }
2059     ost->sync_opts++;
2060     /*
2061      * For video, number of frames in == number of packets out.
2062      * But there may be reordering, so we can't throw away frames on encoder
2063      * flush, we need to limit them here, before they go into encoder.
2064      */
2065     ost->frame_number++;
2066
2067     if(--nb_frames)
2068         goto duplicate_frame;
2069
2070     if (vstats_filename && frame_size)
2071         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
2072 }
2073
2074 static double psnr(double d)
2075 {
2076     return -10.0 * log(d) / log(10.0);
2077 }
2078
2079 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
2080                            int frame_size)
2081 {
2082     AVCodecContext *enc;
2083     int frame_number;
2084     double ti1, bitrate, avg_bitrate;
2085
2086     /* this is executed just the first time do_video_stats is called */
2087     if (!vstats_file) {
2088         vstats_file = fopen(vstats_filename, "w");
2089         if (!vstats_file) {
2090             perror("fopen");
2091             exit_program(1);
2092         }
2093     }
2094
2095     enc = ost->st->codec;
2096     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2097         frame_number = ost->frame_number;
2098         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
2099         if (enc->flags&CODEC_FLAG_PSNR)
2100             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
2101
2102         fprintf(vstats_file,"f_size= %6d ", frame_size);
2103         /* compute pts value */
2104         ti1 = ost->sync_opts * av_q2d(enc->time_base);
2105         if (ti1 < 0.01)
2106             ti1 = 0.01;
2107
2108         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
2109         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
2110         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
2111                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
2112         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
2113     }
2114 }
2115
2116 /* check for new output on any of the filtergraphs */
2117 static int poll_filters(void)
2118 {
2119     AVFilterBufferRef *picref;
2120     AVFrame *filtered_frame = NULL;
2121     int i, ret, ret_all;
2122     unsigned nb_success, nb_eof;
2123     int64_t frame_pts;
2124
2125     while (1) {
2126         /* Reap all buffers present in the buffer sinks */
2127         for (i = 0; i < nb_output_streams; i++) {
2128             OutputStream *ost = output_streams[i];
2129             OutputFile    *of = output_files[ost->file_index];
2130             int ret = 0;
2131
2132             if (!ost->filter || ost->is_past_recording_time)
2133                 continue;
2134
2135             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2136                 return AVERROR(ENOMEM);
2137             } else
2138                 avcodec_get_frame_defaults(ost->filtered_frame);
2139             filtered_frame = ost->filtered_frame;
2140
2141             while (1) {
2142                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
2143                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2144                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2145                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
2146                                                     ost->st->codec->frame_size);
2147                 else
2148 #ifdef SINKA
2149                     ret = av_buffersink_read(ost->filter->filter, &picref);
2150 #else
2151                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
2152                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
2153 #endif
2154                 if (ret < 0) {
2155                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
2156                         char buf[256];
2157                         av_strerror(ret, buf, sizeof(buf));
2158                         av_log(NULL, AV_LOG_WARNING,
2159                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
2160                     }
2161                     break;
2162                 }
2163                 frame_pts = AV_NOPTS_VALUE;
2164                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
2165                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2166                 else if (picref->pts != AV_NOPTS_VALUE)
2167                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
2168                                                     ost->filter->filter->inputs[0]->time_base,
2169                                                     ost->st->codec->time_base) -
2170                                         av_rescale_q(of->start_time,
2171                                                     AV_TIME_BASE_Q,
2172                                                     ost->st->codec->time_base);
2173                 //if (ost->source_index >= 0)
2174                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2175
2176                 if (of->start_time && filtered_frame->pts < of->start_time) {
2177                     avfilter_unref_buffer(picref);
2178                     continue;
2179                 }
2180
2181                 switch (ost->filter->filter->inputs[0]->type) {
2182                 case AVMEDIA_TYPE_VIDEO:
2183                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2184                     filtered_frame->pts = frame_pts;
2185                     if (!ost->frame_aspect_ratio)
2186                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2187
2188                     do_video_out(of->ctx, ost, filtered_frame,
2189                                  same_quant ? ost->last_quality :
2190                                               ost->st->codec->global_quality);
2191                     break;
2192                 case AVMEDIA_TYPE_AUDIO:
2193                     avfilter_copy_buf_props(filtered_frame, picref);
2194                     filtered_frame->pts = frame_pts;
2195                     do_audio_out(of->ctx, ost, filtered_frame);
2196                     break;
2197                 default:
2198                     // TODO support subtitle filters
2199                     av_assert0(0);
2200                 }
2201
2202                 avfilter_unref_buffer(picref);
2203             }
2204         }
2205         /* Request frames through all the graphs */
2206         ret_all = nb_success = nb_eof = 0;
2207         for (i = 0; i < nb_filtergraphs; i++) {
2208             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2209             if (!ret) {
2210                 nb_success++;
2211             } else if (ret == AVERROR_EOF) {
2212                 nb_eof++;
2213             } else if (ret != AVERROR(EAGAIN)) {
2214                 char buf[256];
2215                 av_strerror(ret, buf, sizeof(buf));
2216                 av_log(NULL, AV_LOG_WARNING,
2217                        "Error in request_frame(): %s\n", buf);
2218                 ret_all = ret;
2219             }
2220         }
2221         if (!nb_success)
2222             break;
2223         /* Try again if anything succeeded */
2224     }
2225     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2226 }
2227
2228 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2229 {
2230     char buf[1024];
2231     OutputStream *ost;
2232     AVFormatContext *oc;
2233     int64_t total_size;
2234     AVCodecContext *enc;
2235     int frame_number, vid, i;
2236     double bitrate;
2237     int64_t pts = INT64_MAX;
2238     static int64_t last_time = -1;
2239     static int qp_histogram[52];
2240     int hours, mins, secs, us;
2241
2242     if (!print_stats && !is_last_report)
2243         return;
2244
2245     if (!is_last_report) {
2246         if (last_time == -1) {
2247             last_time = cur_time;
2248             return;
2249         }
2250         if ((cur_time - last_time) < 500000)
2251             return;
2252         last_time = cur_time;
2253     }
2254
2255
2256     oc = output_files[0]->ctx;
2257
2258     total_size = avio_size(oc->pb);
2259     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2260         total_size = avio_tell(oc->pb);
2261         if (total_size < 0)
2262             total_size = 0;
2263     }
2264
2265     buf[0] = '\0';
2266     vid = 0;
2267     for (i = 0; i < nb_output_streams; i++) {
2268         float q = -1;
2269         ost = output_streams[i];
2270         enc = ost->st->codec;
2271         if (!ost->stream_copy && enc->coded_frame)
2272             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2273         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2274             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2275         }
2276         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2277             float fps, t = (cur_time-timer_start) / 1000000.0;
2278
2279             frame_number = ost->frame_number;
2280             fps = t > 1 ? frame_number / t : 0;
2281             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2282                      frame_number, fps < 9.95, fps, q);
2283             if (is_last_report)
2284                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2285             if (qp_hist) {
2286                 int j;
2287                 int qp = lrintf(q);
2288                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2289                     qp_histogram[qp]++;
2290                 for (j = 0; j < 32; j++)
2291                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2292             }
2293             if (enc->flags&CODEC_FLAG_PSNR) {
2294                 int j;
2295                 double error, error_sum = 0;
2296                 double scale, scale_sum = 0;
2297                 char type[3] = { 'Y','U','V' };
2298                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2299                 for (j = 0; j < 3; j++) {
2300                     if (is_last_report) {
2301                         error = enc->error[j];
2302                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2303                     } else {
2304                         error = enc->coded_frame->error[j];
2305                         scale = enc->width * enc->height * 255.0 * 255.0;
2306                     }
2307                     if (j)
2308                         scale /= 4;
2309                     error_sum += error;
2310                     scale_sum += scale;
2311                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2312                 }
2313                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2314             }
2315             vid = 1;
2316         }
2317         /* compute min output value */
2318         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2319                                       ost->st->time_base, AV_TIME_BASE_Q));
2320     }
2321
2322     secs = pts / AV_TIME_BASE;
2323     us = pts % AV_TIME_BASE;
2324     mins = secs / 60;
2325     secs %= 60;
2326     hours = mins / 60;
2327     mins %= 60;
2328
2329     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2330
2331     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2332              "size=%8.0fkB time=", total_size / 1024.0);
2333     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2334              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2335              (100 * us) / AV_TIME_BASE);
2336     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2337              "bitrate=%6.1fkbits/s", bitrate);
2338
2339     if (nb_frames_dup || nb_frames_drop)
2340         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2341                 nb_frames_dup, nb_frames_drop);
2342
2343     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2344
2345     fflush(stderr);
2346
2347     if (is_last_report) {
2348         int64_t raw= audio_size + video_size + extra_size;
2349         av_log(NULL, AV_LOG_INFO, "\n");
2350         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2351                video_size / 1024.0,
2352                audio_size / 1024.0,
2353                extra_size / 1024.0,
2354                100.0 * (total_size - raw) / raw
2355         );
2356         if(video_size + audio_size + extra_size == 0){
2357             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2358         }
2359     }
2360 }
2361
2362 static void flush_encoders(void)
2363 {
2364     int i, ret;
2365
2366     for (i = 0; i < nb_output_streams; i++) {
2367         OutputStream   *ost = output_streams[i];
2368         AVCodecContext *enc = ost->st->codec;
2369         AVFormatContext *os = output_files[ost->file_index]->ctx;
2370         int stop_encoding = 0;
2371
2372         if (!ost->encoding_needed)
2373             continue;
2374
2375         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2376             continue;
2377         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2378             continue;
2379
2380         for (;;) {
2381             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2382             const char *desc;
2383             int64_t *size;
2384
2385             switch (ost->st->codec->codec_type) {
2386             case AVMEDIA_TYPE_AUDIO:
2387                 encode = avcodec_encode_audio2;
2388                 desc   = "Audio";
2389                 size   = &audio_size;
2390                 break;
2391             case AVMEDIA_TYPE_VIDEO:
2392                 encode = avcodec_encode_video2;
2393                 desc   = "Video";
2394                 size   = &video_size;
2395                 break;
2396             default:
2397                 stop_encoding = 1;
2398             }
2399
2400             if (encode) {
2401                 AVPacket pkt;
2402                 int got_packet;
2403                 av_init_packet(&pkt);
2404                 pkt.data = NULL;
2405                 pkt.size = 0;
2406
2407                 update_benchmark(NULL);
2408                 ret = encode(enc, &pkt, NULL, &got_packet);
2409                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2410                 if (ret < 0) {
2411                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2412                     exit_program(1);
2413                 }
2414                 *size += pkt.size;
2415                 if (ost->logfile && enc->stats_out) {
2416                     fprintf(ost->logfile, "%s", enc->stats_out);
2417                 }
2418                 if (!got_packet) {
2419                     stop_encoding = 1;
2420                     break;
2421                 }
2422                 if (pkt.pts != AV_NOPTS_VALUE)
2423                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2424                 if (pkt.dts != AV_NOPTS_VALUE)
2425                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2426                 write_frame(os, &pkt, ost);
2427             }
2428
2429             if (stop_encoding)
2430                 break;
2431         }
2432     }
2433 }
2434
2435 /*
2436  * Check whether a packet from ist should be written into ost at this time
2437  */
2438 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2439 {
2440     OutputFile *of = output_files[ost->file_index];
2441     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2442
2443     if (ost->source_index != ist_index)
2444         return 0;
2445
2446     if (of->start_time && ist->pts < of->start_time)
2447         return 0;
2448
2449     if (of->recording_time != INT64_MAX &&
2450         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2451                       (AVRational){ 1, 1000000 }) >= 0) {
2452         ost->is_past_recording_time = 1;
2453         return 0;
2454     }
2455
2456     return 1;
2457 }
2458
2459 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2460 {
2461     OutputFile *of = output_files[ost->file_index];
2462     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2463     AVPicture pict;
2464     AVPacket opkt;
2465
2466     av_init_packet(&opkt);
2467
2468     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2469         !ost->copy_initial_nonkeyframes)
2470         return;
2471
2472     /* force the input stream PTS */
2473     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2474         audio_size += pkt->size;
2475     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2476         video_size += pkt->size;
2477         ost->sync_opts++;
2478     }
2479
2480     if (pkt->pts != AV_NOPTS_VALUE)
2481         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2482     else
2483         opkt.pts = AV_NOPTS_VALUE;
2484
2485     if (pkt->dts == AV_NOPTS_VALUE)
2486         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2487     else
2488         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2489     opkt.dts -= ost_tb_start_time;
2490
2491     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2492     opkt.flags    = pkt->flags;
2493
2494     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2495     if (  ost->st->codec->codec_id != CODEC_ID_H264
2496        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2497        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2498        && ost->st->codec->codec_id != CODEC_ID_VC1
2499        ) {
2500         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2501             opkt.destruct = av_destruct_packet;
2502     } else {
2503         opkt.data = pkt->data;
2504         opkt.size = pkt->size;
2505     }
2506     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2507         /* store AVPicture in AVPacket, as expected by the output format */
2508         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2509         opkt.data = (uint8_t *)&pict;
2510         opkt.size = sizeof(AVPicture);
2511         opkt.flags |= AV_PKT_FLAG_KEY;
2512     }
2513
2514     write_frame(of->ctx, &opkt, ost);
2515     ost->st->codec->frame_number++;
2516     av_free_packet(&opkt);
2517 }
2518
2519 static void rate_emu_sleep(InputStream *ist)
2520 {
2521     if (input_files[ist->file_index]->rate_emu) {
2522         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2523         int64_t now = av_gettime() - ist->start;
2524         if (pts > now)
2525             usleep(pts - now);
2526     }
2527 }
2528
2529 static int guess_input_channel_layout(InputStream *ist)
2530 {
2531     AVCodecContext *dec = ist->st->codec;
2532
2533     if (!dec->channel_layout) {
2534         char layout_name[256];
2535
2536         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2537         if (!dec->channel_layout)
2538             return 0;
2539         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2540                                      dec->channels, dec->channel_layout);
2541         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2542                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2543     }
2544     return 1;
2545 }
2546
2547 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2548 {
2549     AVFrame *decoded_frame;
2550     AVCodecContext *avctx = ist->st->codec;
2551     int i, ret, resample_changed;
2552
2553     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2554         return AVERROR(ENOMEM);
2555     else
2556         avcodec_get_frame_defaults(ist->decoded_frame);
2557     decoded_frame = ist->decoded_frame;
2558
2559     update_benchmark(NULL);
2560     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2561     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2562     if (ret < 0) {
2563         return ret;
2564     }
2565     if (avctx->sample_rate <= 0) {
2566         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2567         return AVERROR_INVALIDDATA;
2568     }
2569
2570     if (!*got_output) {
2571         /* no audio frame */
2572         if (!pkt->size)
2573             for (i = 0; i < ist->nb_filters; i++)
2574                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2575                                      AV_BUFFERSRC_FLAG_NO_COPY);
2576         return ret;
2577     }
2578
2579     /* if the decoder provides a pts, use it instead of the last packet pts.
2580        the decoder could be delaying output by a packet or more. */
2581     if (decoded_frame->pts != AV_NOPTS_VALUE)
2582         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2583     else if (pkt->pts != AV_NOPTS_VALUE) {
2584         decoded_frame->pts = pkt->pts;
2585         pkt->pts           = AV_NOPTS_VALUE;
2586     }else
2587         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2588
2589
2590 #if 1
2591     /* increment next_dts to use for the case where the input stream does not
2592        have timestamps or there are multiple frames in the packet */
2593     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2594                      avctx->sample_rate;
2595     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2596                      avctx->sample_rate;
2597 #endif
2598
2599     rate_emu_sleep(ist);
2600
2601     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2602                        ist->resample_channels       != avctx->channels               ||
2603                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2604                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2605     if (resample_changed) {
2606         char layout1[64], layout2[64];
2607
2608         if (!guess_input_channel_layout(ist)) {
2609             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2610                    "layout for Input Stream #%d.%d\n", ist->file_index,
2611                    ist->st->index);
2612             exit_program(1);
2613         }
2614         decoded_frame->channel_layout = avctx->channel_layout;
2615
2616         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2617                                      ist->resample_channel_layout);
2618         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2619                                      decoded_frame->channel_layout);
2620
2621         av_log(NULL, AV_LOG_INFO,
2622                "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",
2623                ist->file_index, ist->st->index,
2624                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2625                ist->resample_channels, layout1,
2626                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2627                avctx->channels, layout2);
2628
2629         ist->resample_sample_fmt     = decoded_frame->format;
2630         ist->resample_sample_rate    = decoded_frame->sample_rate;
2631         ist->resample_channel_layout = decoded_frame->channel_layout;
2632         ist->resample_channels       = avctx->channels;
2633
2634         for (i = 0; i < nb_filtergraphs; i++)
2635             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2636                 configure_filtergraph(filtergraphs[i]) < 0) {
2637                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2638                 exit_program(1);
2639             }
2640     }
2641
2642     for (i = 0; i < ist->nb_filters; i++)
2643         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2644
2645     return ret;
2646 }
2647
2648 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2649 {
2650     AVFrame *decoded_frame;
2651     void *buffer_to_free = NULL;
2652     int i, ret = 0, resample_changed;
2653     int64_t best_effort_timestamp;
2654     AVRational *frame_sample_aspect;
2655     float quality;
2656
2657     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2658         return AVERROR(ENOMEM);
2659     else
2660         avcodec_get_frame_defaults(ist->decoded_frame);
2661     decoded_frame = ist->decoded_frame;
2662     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2663
2664     update_benchmark(NULL);
2665     ret = avcodec_decode_video2(ist->st->codec,
2666                                 decoded_frame, got_output, pkt);
2667     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2668     if (ret < 0)
2669         return ret;
2670
2671     quality = same_quant ? decoded_frame->quality : 0;
2672     if (!*got_output) {
2673         /* no picture yet */
2674         if (!pkt->size)
2675             for (i = 0; i < ist->nb_filters; i++)
2676                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2677         return ret;
2678     }
2679
2680     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2681     if(best_effort_timestamp != AV_NOPTS_VALUE)
2682         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2683
2684     pkt->size = 0;
2685     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2686
2687     rate_emu_sleep(ist);
2688
2689     if (ist->st->sample_aspect_ratio.num)
2690         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2691
2692     resample_changed = ist->resample_width   != decoded_frame->width  ||
2693                        ist->resample_height  != decoded_frame->height ||
2694                        ist->resample_pix_fmt != decoded_frame->format;
2695     if (resample_changed) {
2696         av_log(NULL, AV_LOG_INFO,
2697                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2698                ist->file_index, ist->st->index,
2699                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2700                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2701
2702         ist->resample_width   = decoded_frame->width;
2703         ist->resample_height  = decoded_frame->height;
2704         ist->resample_pix_fmt = decoded_frame->format;
2705
2706         for (i = 0; i < nb_filtergraphs; i++)
2707             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2708                 configure_filtergraph(filtergraphs[i]) < 0) {
2709                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2710                 exit_program(1);
2711             }
2712     }
2713
2714     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2715     for (i = 0; i < ist->nb_filters; i++) {
2716         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2717                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2718                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2719         // XXX what an ugly hack
2720         if (ist->filters[i]->graph->nb_outputs == 1)
2721             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2722
2723         if (!frame_sample_aspect->num)
2724             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2725         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2726             FrameBuffer      *buf = decoded_frame->opaque;
2727             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2728                                         decoded_frame->data, decoded_frame->linesize,
2729                                         AV_PERM_READ | AV_PERM_PRESERVE,
2730                                         ist->st->codec->width, ist->st->codec->height,
2731                                         ist->st->codec->pix_fmt);
2732
2733             avfilter_copy_frame_props(fb, decoded_frame);
2734             fb->buf->priv           = buf;
2735             fb->buf->free           = filter_release_buffer;
2736
2737             av_assert0(buf->refcount>0);
2738             buf->refcount++;
2739             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2740                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2741                                  AV_BUFFERSRC_FLAG_NO_COPY);
2742         } else
2743         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2744             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2745             exit_program(1);
2746         }
2747
2748     }
2749
2750     av_free(buffer_to_free);
2751     return ret;
2752 }
2753
2754 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2755 {
2756     AVSubtitle subtitle;
2757     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2758                                           &subtitle, got_output, pkt);
2759     if (ret < 0)
2760         return ret;
2761     if (!*got_output)
2762         return ret;
2763
2764     rate_emu_sleep(ist);
2765
2766     for (i = 0; i < nb_output_streams; i++) {
2767         OutputStream *ost = output_streams[i];
2768
2769         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2770             continue;
2771
2772         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2773     }
2774
2775     avsubtitle_free(&subtitle);
2776     return ret;
2777 }
2778
2779 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2780 static int output_packet(InputStream *ist, const AVPacket *pkt)
2781 {
2782     int ret = 0, i;
2783     int got_output;
2784
2785     AVPacket avpkt;
2786     if (!ist->saw_first_ts) {
2787         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;
2788         ist->pts = 0;
2789         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2790             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2791             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2792         }
2793         ist->saw_first_ts = 1;
2794     }
2795
2796     if (ist->next_dts == AV_NOPTS_VALUE)
2797         ist->next_dts = ist->dts;
2798     if (ist->next_pts == AV_NOPTS_VALUE)
2799         ist->next_pts = ist->pts;
2800
2801     if (pkt == NULL) {
2802         /* EOF handling */
2803         av_init_packet(&avpkt);
2804         avpkt.data = NULL;
2805         avpkt.size = 0;
2806         goto handle_eof;
2807     } else {
2808         avpkt = *pkt;
2809     }
2810
2811     if (pkt->dts != AV_NOPTS_VALUE) {
2812         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2813         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2814             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2815     }
2816
2817     // while we have more to decode or while the decoder did output something on EOF
2818     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2819         int duration;
2820     handle_eof:
2821
2822         ist->pts = ist->next_pts;
2823         ist->dts = ist->next_dts;
2824
2825         if (avpkt.size && avpkt.size != pkt->size) {
2826             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2827                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2828             ist->showed_multi_packet_warning = 1;
2829         }
2830
2831         switch (ist->st->codec->codec_type) {
2832         case AVMEDIA_TYPE_AUDIO:
2833             ret = transcode_audio    (ist, &avpkt, &got_output);
2834             break;
2835         case AVMEDIA_TYPE_VIDEO:
2836             ret = transcode_video    (ist, &avpkt, &got_output);
2837             if (avpkt.duration) {
2838                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2839             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2840                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2841                 duration = ((int64_t)AV_TIME_BASE *
2842                                 ist->st->codec->time_base.num * ticks) /
2843                                 ist->st->codec->time_base.den;
2844             } else
2845                 duration = 0;
2846
2847             if(ist->dts != AV_NOPTS_VALUE && duration) {
2848                 ist->next_dts += duration;
2849             }else
2850                 ist->next_dts = AV_NOPTS_VALUE;
2851
2852             if (got_output)
2853                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2854             break;
2855         case AVMEDIA_TYPE_SUBTITLE:
2856             ret = transcode_subtitles(ist, &avpkt, &got_output);
2857             break;
2858         default:
2859             return -1;
2860         }
2861
2862         if (ret < 0)
2863             return ret;
2864
2865         avpkt.dts=
2866         avpkt.pts= AV_NOPTS_VALUE;
2867
2868         // touch data and size only if not EOF
2869         if (pkt) {
2870             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2871                 ret = avpkt.size;
2872             avpkt.data += ret;
2873             avpkt.size -= ret;
2874         }
2875         if (!got_output) {
2876             continue;
2877         }
2878     }
2879
2880     /* handle stream copy */
2881     if (!ist->decoding_needed) {
2882         rate_emu_sleep(ist);
2883         ist->dts = ist->next_dts;
2884         switch (ist->st->codec->codec_type) {
2885         case AVMEDIA_TYPE_AUDIO:
2886             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2887                              ist->st->codec->sample_rate;
2888             break;
2889         case AVMEDIA_TYPE_VIDEO:
2890             if (pkt->duration) {
2891                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2892             } else if(ist->st->codec->time_base.num != 0) {
2893                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2894                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2895                                   ist->st->codec->time_base.num * ticks) /
2896                                   ist->st->codec->time_base.den;
2897             }
2898             break;
2899         }
2900         ist->pts = ist->dts;
2901         ist->next_pts = ist->next_dts;
2902     }
2903     for (i = 0; pkt && i < nb_output_streams; i++) {
2904         OutputStream *ost = output_streams[i];
2905
2906         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2907             continue;
2908
2909         do_streamcopy(ist, ost, pkt);
2910     }
2911
2912     return 0;
2913 }
2914
2915 static void print_sdp(void)
2916 {
2917     char sdp[2048];
2918     int i;
2919     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2920
2921     if (!avc)
2922         exit_program(1);
2923     for (i = 0; i < nb_output_files; i++)
2924         avc[i] = output_files[i]->ctx;
2925
2926     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2927     printf("SDP:\n%s\n", sdp);
2928     fflush(stdout);
2929     av_freep(&avc);
2930 }
2931
2932 static int init_input_stream(int ist_index, char *error, int error_len)
2933 {
2934     InputStream *ist = input_streams[ist_index];
2935
2936     if (ist->decoding_needed) {
2937         AVCodec *codec = ist->dec;
2938         if (!codec) {
2939             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2940                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2941             return AVERROR(EINVAL);
2942         }
2943
2944         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2945         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2946             ist->st->codec->get_buffer     = codec_get_buffer;
2947             ist->st->codec->release_buffer = codec_release_buffer;
2948             ist->st->codec->opaque         = ist;
2949         }
2950
2951         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2952             av_dict_set(&ist->opts, "threads", "auto", 0);
2953         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2954             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2955                     ist->file_index, ist->st->index);
2956             return AVERROR(EINVAL);
2957         }
2958         assert_codec_experimental(ist->st->codec, 0);
2959         assert_avoptions(ist->opts);
2960     }
2961
2962     ist->next_pts = AV_NOPTS_VALUE;
2963     ist->next_dts = AV_NOPTS_VALUE;
2964     ist->is_start = 1;
2965
2966     return 0;
2967 }
2968
2969 static InputStream *get_input_stream(OutputStream *ost)
2970 {
2971     if (ost->source_index >= 0)
2972         return input_streams[ost->source_index];
2973
2974     if (ost->filter) {
2975         FilterGraph *fg = ost->filter->graph;
2976         int i;
2977
2978         for (i = 0; i < fg->nb_inputs; i++)
2979             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2980                 return fg->inputs[i]->ist;
2981     }
2982
2983     return NULL;
2984 }
2985
2986 static int transcode_init(void)
2987 {
2988     int ret = 0, i, j, k;
2989     AVFormatContext *oc;
2990     AVCodecContext *codec, *icodec;
2991     OutputStream *ost;
2992     InputStream *ist;
2993     char error[1024];
2994     int want_sdp = 1;
2995
2996     /* init framerate emulation */
2997     for (i = 0; i < nb_input_files; i++) {
2998         InputFile *ifile = input_files[i];
2999         if (ifile->rate_emu)
3000             for (j = 0; j < ifile->nb_streams; j++)
3001                 input_streams[j + ifile->ist_index]->start = av_gettime();
3002     }
3003
3004     /* output stream init */
3005     for (i = 0; i < nb_output_files; i++) {
3006         oc = output_files[i]->ctx;
3007         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
3008             av_dump_format(oc, i, oc->filename, 1);
3009             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
3010             return AVERROR(EINVAL);
3011         }
3012     }
3013
3014     /* init complex filtergraphs */
3015     for (i = 0; i < nb_filtergraphs; i++)
3016         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
3017             return ret;
3018
3019     /* for each output stream, we compute the right encoding parameters */
3020     for (i = 0; i < nb_output_streams; i++) {
3021         ost = output_streams[i];
3022         oc  = output_files[ost->file_index]->ctx;
3023         ist = get_input_stream(ost);
3024
3025         if (ost->attachment_filename)
3026             continue;
3027
3028         codec  = ost->st->codec;
3029
3030         if (ist) {
3031             icodec = ist->st->codec;
3032
3033             ost->st->disposition          = ist->st->disposition;
3034             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
3035             codec->chroma_sample_location = icodec->chroma_sample_location;
3036         }
3037
3038         if (ost->stream_copy) {
3039             uint64_t extra_size;
3040
3041             av_assert0(ist && !ost->filter);
3042
3043             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
3044
3045             if (extra_size > INT_MAX) {
3046                 return AVERROR(EINVAL);
3047             }
3048
3049             /* if stream_copy is selected, no need to decode or encode */
3050             codec->codec_id   = icodec->codec_id;
3051             codec->codec_type = icodec->codec_type;
3052
3053             if (!codec->codec_tag) {
3054                 if (!oc->oformat->codec_tag ||
3055                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
3056                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
3057                     codec->codec_tag = icodec->codec_tag;
3058             }
3059
3060             codec->bit_rate       = icodec->bit_rate;
3061             codec->rc_max_rate    = icodec->rc_max_rate;
3062             codec->rc_buffer_size = icodec->rc_buffer_size;
3063             codec->field_order    = icodec->field_order;
3064             codec->extradata      = av_mallocz(extra_size);
3065             if (!codec->extradata) {
3066                 return AVERROR(ENOMEM);
3067             }
3068             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
3069             codec->extradata_size= icodec->extradata_size;
3070             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
3071
3072             codec->time_base = ist->st->time_base;
3073             /*
3074              * Avi is a special case here because it supports variable fps but
3075              * having the fps and timebase differe significantly adds quite some
3076              * overhead
3077              */
3078             if(!strcmp(oc->oformat->name, "avi")) {
3079                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
3080                                  && av_q2d(ist->st->time_base) < 1.0/500
3081                     || copy_tb==0){
3082                     codec->time_base = icodec->time_base;
3083                     codec->time_base.num *= icodec->ticks_per_frame;
3084                     codec->time_base.den *= 2;
3085                     codec->ticks_per_frame = 2;
3086                 }
3087             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
3088                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
3089                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
3090             ) {
3091                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
3092                                 && av_q2d(ist->st->time_base) < 1.0/500
3093                    || copy_tb==0){
3094                     codec->time_base = icodec->time_base;
3095                     codec->time_base.num *= icodec->ticks_per_frame;
3096                 }
3097             }
3098             av_reduce(&codec->time_base.num, &codec->time_base.den,
3099                         codec->time_base.num, codec->time_base.den, INT_MAX);
3100
3101             switch (codec->codec_type) {
3102             case AVMEDIA_TYPE_AUDIO:
3103                 if (audio_volume != 256) {
3104                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3105                     exit_program(1);
3106                 }
3107                 codec->channel_layout     = icodec->channel_layout;
3108                 codec->sample_rate        = icodec->sample_rate;
3109                 codec->channels           = icodec->channels;
3110                 codec->frame_size         = icodec->frame_size;
3111                 codec->audio_service_type = icodec->audio_service_type;
3112                 codec->block_align        = icodec->block_align;
3113                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
3114                     codec->block_align= 0;
3115                 if(codec->codec_id == CODEC_ID_AC3)
3116                     codec->block_align= 0;
3117                 break;
3118             case AVMEDIA_TYPE_VIDEO:
3119                 codec->pix_fmt            = icodec->pix_fmt;
3120                 codec->width              = icodec->width;
3121                 codec->height             = icodec->height;
3122                 codec->has_b_frames       = icodec->has_b_frames;
3123                 if (!codec->sample_aspect_ratio.num) {
3124                     codec->sample_aspect_ratio   =
3125                     ost->st->sample_aspect_ratio =
3126                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3127                         ist->st->codec->sample_aspect_ratio.num ?
3128                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3129                 }
3130                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3131                 break;
3132             case AVMEDIA_TYPE_SUBTITLE:
3133                 codec->width  = icodec->width;
3134                 codec->height = icodec->height;
3135                 break;
3136             case AVMEDIA_TYPE_DATA:
3137             case AVMEDIA_TYPE_ATTACHMENT:
3138                 break;
3139             default:
3140                 abort();
3141             }
3142         } else {
3143             if (!ost->enc)
3144                 ost->enc = avcodec_find_encoder(codec->codec_id);
3145             if (!ost->enc) {
3146                 /* should only happen when a default codec is not present. */
3147                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3148                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3149                 ret = AVERROR(EINVAL);
3150                 goto dump_format;
3151             }
3152
3153             if (ist)
3154                 ist->decoding_needed = 1;
3155             ost->encoding_needed = 1;
3156
3157             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3158                 if (ist && !ost->frame_rate.num)
3159                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3160                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3161                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3162                     ost->frame_rate = ost->enc->supported_framerates[idx];
3163                 }
3164             }
3165
3166             if (!ost->filter &&
3167                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3168                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3169                     FilterGraph *fg;
3170                     fg = init_simple_filtergraph(ist, ost);
3171                     if (configure_simple_filtergraph(fg)) {
3172                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3173                         exit(1);
3174                     }
3175             }
3176
3177             switch (codec->codec_type) {
3178             case AVMEDIA_TYPE_AUDIO:
3179                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3180                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3181                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3182                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3183                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3184                 break;
3185             case AVMEDIA_TYPE_VIDEO:
3186                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3187                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3188                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3189                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3190                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3191                 }
3192                 for (j = 0; j < ost->forced_kf_count; j++)
3193                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3194                                                          AV_TIME_BASE_Q,
3195                                                          codec->time_base);
3196
3197                 codec->width  = ost->filter->filter->inputs[0]->w;
3198                 codec->height = ost->filter->filter->inputs[0]->h;
3199                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3200                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3201                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3202                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3203                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3204
3205                 if (codec->width   != icodec->width  ||
3206                     codec->height  != icodec->height ||
3207                     codec->pix_fmt != icodec->pix_fmt) {
3208                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3209                 }
3210
3211                 break;
3212             case AVMEDIA_TYPE_SUBTITLE:
3213                 codec->time_base = (AVRational){1, 1000};
3214                 break;
3215             default:
3216                 abort();
3217                 break;
3218             }
3219             /* two pass mode */
3220             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3221                 char logfilename[1024];
3222                 FILE *f;
3223
3224                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3225                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3226                          i);
3227                 if (!strcmp(ost->enc->name, "libx264")) {
3228                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3229                 } else {
3230                     if (codec->flags & CODEC_FLAG_PASS2) {
3231                         char  *logbuffer;
3232                         size_t logbuffer_size;
3233                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3234                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3235                                    logfilename);
3236                             exit_program(1);
3237                         }
3238                         codec->stats_in = logbuffer;
3239                     }
3240                     if (codec->flags & CODEC_FLAG_PASS1) {
3241                         f = fopen(logfilename, "wb");
3242                         if (!f) {
3243                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3244                                 logfilename, strerror(errno));
3245                             exit_program(1);
3246                         }
3247                         ost->logfile = f;
3248                     }
3249                 }
3250             }
3251         }
3252     }
3253
3254     /* open each encoder */
3255     for (i = 0; i < nb_output_streams; i++) {
3256         ost = output_streams[i];
3257         if (ost->encoding_needed) {
3258             AVCodec      *codec = ost->enc;
3259             AVCodecContext *dec = NULL;
3260
3261             if ((ist = get_input_stream(ost)))
3262                 dec = ist->st->codec;
3263             if (dec && dec->subtitle_header) {
3264                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3265                 if (!ost->st->codec->subtitle_header) {
3266                     ret = AVERROR(ENOMEM);
3267                     goto dump_format;
3268                 }
3269                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3270                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3271             }
3272             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3273                 av_dict_set(&ost->opts, "threads", "auto", 0);
3274             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3275                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3276                         ost->file_index, ost->index);
3277                 ret = AVERROR(EINVAL);
3278                 goto dump_format;
3279             }
3280             assert_codec_experimental(ost->st->codec, 1);
3281             assert_avoptions(ost->opts);
3282             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3283                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3284                                              " It takes bits/s as argument, not kbits/s\n");
3285             extra_size += ost->st->codec->extradata_size;
3286
3287             if (ost->st->codec->me_threshold)
3288                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3289         }
3290     }
3291
3292     /* init input streams */
3293     for (i = 0; i < nb_input_streams; i++)
3294         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3295             goto dump_format;
3296
3297     /* discard unused programs */
3298     for (i = 0; i < nb_input_files; i++) {
3299         InputFile *ifile = input_files[i];
3300         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3301             AVProgram *p = ifile->ctx->programs[j];
3302             int discard  = AVDISCARD_ALL;
3303
3304             for (k = 0; k < p->nb_stream_indexes; k++)
3305                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3306                     discard = AVDISCARD_DEFAULT;
3307                     break;
3308                 }
3309             p->discard = discard;
3310         }
3311     }
3312
3313     /* open files and write file headers */
3314     for (i = 0; i < nb_output_files; i++) {
3315         oc = output_files[i]->ctx;
3316         oc->interrupt_callback = int_cb;
3317         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3318             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3319             ret = AVERROR(EINVAL);
3320             goto dump_format;
3321         }
3322 //         assert_avoptions(output_files[i]->opts);
3323         if (strcmp(oc->oformat->name, "rtp")) {
3324             want_sdp = 0;
3325         }
3326     }
3327
3328  dump_format:
3329     /* dump the file output parameters - cannot be done before in case
3330        of stream copy */
3331     for (i = 0; i < nb_output_files; i++) {
3332         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3333     }
3334
3335     /* dump the stream mapping */
3336     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3337     for (i = 0; i < nb_input_streams; i++) {
3338         ist = input_streams[i];
3339
3340         for (j = 0; j < ist->nb_filters; j++) {
3341             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3342             if (ist->filters[j]->graph->graph_desc) {
3343                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3344                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3345                        link->dst->filter->name);
3346                 if (link->dst->input_count > 1)
3347                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3348                 if (nb_filtergraphs > 1)
3349                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3350                 av_log(NULL, AV_LOG_INFO, "\n");
3351             }
3352         }
3353     }
3354
3355     for (i = 0; i < nb_output_streams; i++) {
3356         ost = output_streams[i];
3357
3358         if (ost->attachment_filename) {
3359             /* an attached file */
3360             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3361                    ost->attachment_filename, ost->file_index, ost->index);
3362             continue;
3363         }
3364
3365         if (ost->filter && ost->filter->graph->graph_desc) {
3366             /* output from a complex graph */
3367             AVFilterLink *link = ost->filter->filter->inputs[0];
3368             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3369             if (link->src->output_count > 1)
3370                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3371             if (nb_filtergraphs > 1)
3372                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3373
3374             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3375                    ost->index, ost->enc ? ost->enc->name : "?");
3376             continue;
3377         }
3378
3379         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3380                input_streams[ost->source_index]->file_index,
3381                input_streams[ost->source_index]->st->index,
3382                ost->file_index,
3383                ost->index);
3384         if (ost->sync_ist != input_streams[ost->source_index])
3385             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3386                    ost->sync_ist->file_index,
3387                    ost->sync_ist->st->index);
3388         if (ost->stream_copy)
3389             av_log(NULL, AV_LOG_INFO, " (copy)");
3390         else
3391             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3392                    input_streams[ost->source_index]->dec->name : "?",
3393                    ost->enc ? ost->enc->name : "?");
3394         av_log(NULL, AV_LOG_INFO, "\n");
3395     }
3396
3397     if (ret) {
3398         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3399         return ret;
3400     }
3401
3402     if (want_sdp) {
3403         print_sdp();
3404     }
3405
3406     return 0;
3407 }
3408
3409 /*
3410  * The following code is the main loop of the file converter
3411  */
3412 static int transcode(void)
3413 {
3414     int ret, i;
3415     AVFormatContext *is, *os;
3416     OutputStream *ost;
3417     InputStream *ist;
3418     uint8_t *no_packet;
3419     int no_packet_count = 0;
3420     int64_t timer_start;
3421     int key;
3422
3423     if (!(no_packet = av_mallocz(nb_input_files)))
3424         exit_program(1);
3425
3426     ret = transcode_init();
3427     if (ret < 0)
3428         goto fail;
3429
3430     if (!using_stdin) {
3431         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3432     }
3433
3434     timer_start = av_gettime();
3435
3436     for (; received_sigterm == 0;) {
3437         int file_index, ist_index, past_recording_time = 1;
3438         AVPacket pkt;
3439         int64_t ipts_min;
3440         int64_t cur_time= av_gettime();
3441
3442         ipts_min = INT64_MAX;
3443         /* if 'q' pressed, exits */
3444         if (!using_stdin) {
3445             static int64_t last_time;
3446             if (received_nb_signals)
3447                 break;
3448             /* read_key() returns 0 on EOF */
3449             if(cur_time - last_time >= 100000 && !run_as_daemon){
3450                 key =  read_key();
3451                 last_time = cur_time;
3452             }else
3453                 key = -1;
3454             if (key == 'q')
3455                 break;
3456             if (key == '+') av_log_set_level(av_log_get_level()+10);
3457             if (key == '-') av_log_set_level(av_log_get_level()-10);
3458             if (key == 's') qp_hist     ^= 1;
3459             if (key == 'h'){
3460                 if (do_hex_dump){
3461                     do_hex_dump = do_pkt_dump = 0;
3462                 } else if(do_pkt_dump){
3463                     do_hex_dump = 1;
3464                 } else
3465                     do_pkt_dump = 1;
3466                 av_log_set_level(AV_LOG_DEBUG);
3467             }
3468             if (key == 'c' || key == 'C'){
3469                 char buf[4096], target[64], command[256], arg[256] = {0};
3470                 double time;
3471                 int k, n = 0;
3472                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3473                 i = 0;
3474                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3475                     if (k > 0)
3476                         buf[i++] = k;
3477                 buf[i] = 0;
3478                 if (k > 0 &&
3479                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3480                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3481                            target, time, command, arg);
3482                     for (i = 0; i < nb_filtergraphs; i++) {
3483                         FilterGraph *fg = filtergraphs[i];
3484                         if (fg->graph) {
3485                             if (time < 0) {
3486                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3487                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3488                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3489                             } else {
3490                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3491                             }
3492                         }
3493                     }
3494                 } else {
3495                     av_log(NULL, AV_LOG_ERROR,
3496                            "Parse error, at least 3 arguments were expected, "
3497                            "only %d given in string '%s'\n", n, buf);
3498                 }
3499             }
3500             if (key == 'd' || key == 'D'){
3501                 int debug=0;
3502                 if(key == 'D') {
3503                     debug = input_streams[0]->st->codec->debug<<1;
3504                     if(!debug) debug = 1;
3505                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3506                         debug += debug;
3507                 }else
3508                     if(scanf("%d", &debug)!=1)
3509                         fprintf(stderr,"error parsing debug value\n");
3510                 for(i=0;i<nb_input_streams;i++) {
3511                     input_streams[i]->st->codec->debug = debug;
3512                 }
3513                 for(i=0;i<nb_output_streams;i++) {
3514                     ost = output_streams[i];
3515                     ost->st->codec->debug = debug;
3516                 }
3517                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3518                 fprintf(stderr,"debug=%d\n", debug);
3519             }
3520             if (key == '?'){
3521                 fprintf(stderr, "key    function\n"
3522                                 "?      show this help\n"
3523                                 "+      increase verbosity\n"
3524                                 "-      decrease verbosity\n"
3525                                 "c      Send command to filtergraph\n"
3526                                 "D      cycle through available debug modes\n"
3527                                 "h      dump packets/hex press to cycle through the 3 states\n"
3528                                 "q      quit\n"
3529                                 "s      Show QP histogram\n"
3530                 );
3531             }
3532         }
3533
3534         /* check if there's any stream where output is still needed */
3535         for (i = 0; i < nb_output_streams; i++) {
3536             OutputFile *of;
3537             ost = output_streams[i];
3538             of  = output_files[ost->file_index];
3539             os  = output_files[ost->file_index]->ctx;
3540             if (ost->is_past_recording_time ||
3541                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3542                 continue;
3543             if (ost->frame_number >= ost->max_frames) {
3544                 int j;
3545                 for (j = 0; j < of->ctx->nb_streams; j++)
3546                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3547                 continue;
3548             }
3549             past_recording_time = 0;
3550         }
3551         if (past_recording_time)
3552             break;
3553
3554         /* select the stream that we must read now by looking at the
3555            smallest output pts */
3556         file_index = -1;
3557         for (i = 0; i < nb_input_streams; i++) {
3558             int64_t ipts;
3559             ist = input_streams[i];
3560             ipts = ist->pts;
3561             if (ist->discard || no_packet[ist->file_index])
3562                 continue;
3563             if (!input_files[ist->file_index]->eof_reached) {
3564                 if (ipts < ipts_min) {
3565                     ipts_min = ipts;
3566                     file_index = ist->file_index;
3567                 }
3568             }
3569         }
3570         /* if none, if is finished */
3571         if (file_index < 0) {
3572             if (no_packet_count) {
3573                 no_packet_count = 0;
3574                 memset(no_packet, 0, nb_input_files);
3575                 usleep(10000);
3576                 continue;
3577             }
3578             break;
3579         }
3580
3581         /* read a frame from it and output it in the fifo */
3582         is  = input_files[file_index]->ctx;
3583         ret = av_read_frame(is, &pkt);
3584         if (ret == AVERROR(EAGAIN)) {
3585             no_packet[file_index] = 1;
3586             no_packet_count++;
3587             continue;
3588         }
3589         if (ret < 0) {
3590             input_files[file_index]->eof_reached = 1;
3591
3592             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3593                 ist = input_streams[input_files[file_index]->ist_index + i];
3594                 if (ist->decoding_needed)
3595                     output_packet(ist, NULL);
3596             }
3597
3598             if (opt_shortest)
3599                 break;
3600             else
3601                 continue;
3602         }
3603
3604         no_packet_count = 0;
3605         memset(no_packet, 0, nb_input_files);
3606
3607         if (do_pkt_dump) {
3608             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3609                              is->streams[pkt.stream_index]);
3610         }
3611         /* the following test is needed in case new streams appear
3612            dynamically in stream : we ignore them */
3613         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3614             goto discard_packet;
3615         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3616         ist = input_streams[ist_index];
3617         if (ist->discard)
3618             goto discard_packet;
3619
3620         if (pkt.dts != AV_NOPTS_VALUE)
3621             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3622         if (pkt.pts != AV_NOPTS_VALUE)
3623             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3624
3625         if (pkt.pts != AV_NOPTS_VALUE)
3626             pkt.pts *= ist->ts_scale;
3627         if (pkt.dts != AV_NOPTS_VALUE)
3628             pkt.dts *= ist->ts_scale;
3629
3630         if (debug_ts) {
3631             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3632                     "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",
3633                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3634                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3635                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3636                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3637                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3638                     input_files[ist->file_index]->ts_offset);
3639         }
3640
3641         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3642             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3643             int64_t delta   = pkt_dts - ist->next_dts;
3644             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3645             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3646                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3647                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3648                 pkt_dts+1<ist->pts){
3649                 input_files[ist->file_index]->ts_offset -= delta;
3650                 av_log(NULL, AV_LOG_DEBUG,
3651                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3652                        delta, input_files[ist->file_index]->ts_offset);
3653                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3654                 if (pkt.pts != AV_NOPTS_VALUE)
3655                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3656             }
3657             } else {
3658                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3659                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3660                      pkt_dts+1<ist->pts){
3661                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3662                     pkt.dts = AV_NOPTS_VALUE;
3663                 }
3664                 if (pkt.pts != AV_NOPTS_VALUE){
3665                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3666                     delta   = pkt_pts - ist->next_dts;
3667                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3668                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3669                         pkt_pts+1<ist->pts) {
3670                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3671                         pkt.pts = AV_NOPTS_VALUE;
3672                     }
3673                 }
3674             }
3675         }
3676
3677         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3678         if (output_packet(ist, &pkt) < 0 ||
3679             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3680             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3681                    ist->file_index, ist->st->index);
3682             if (exit_on_error)
3683                 exit_program(1);
3684             av_free_packet(&pkt);
3685             continue;
3686         }
3687
3688     discard_packet:
3689         av_free_packet(&pkt);
3690
3691         /* dump report by using the output first video and audio streams */
3692         print_report(0, timer_start, cur_time);
3693     }
3694
3695     /* at the end of stream, we must flush the decoder buffers */
3696     for (i = 0; i < nb_input_streams; i++) {
3697         ist = input_streams[i];
3698         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3699             output_packet(ist, NULL);
3700         }
3701     }
3702     poll_filters();
3703     flush_encoders();
3704
3705     term_exit();
3706
3707     /* write the trailer if needed and close file */
3708     for (i = 0; i < nb_output_files; i++) {
3709         os = output_files[i]->ctx;
3710         av_write_trailer(os);
3711     }
3712
3713     /* dump report by using the first video and audio streams */
3714     print_report(1, timer_start, av_gettime());
3715
3716     /* close each encoder */
3717     for (i = 0; i < nb_output_streams; i++) {
3718         ost = output_streams[i];
3719         if (ost->encoding_needed) {
3720             av_freep(&ost->st->codec->stats_in);
3721             avcodec_close(ost->st->codec);
3722         }
3723     }
3724
3725     /* close each decoder */
3726     for (i = 0; i < nb_input_streams; i++) {
3727         ist = input_streams[i];
3728         if (ist->decoding_needed) {
3729             avcodec_close(ist->st->codec);
3730         }
3731     }
3732
3733     /* finished ! */
3734     ret = 0;
3735
3736  fail:
3737     av_freep(&no_packet);
3738
3739     if (output_streams) {
3740         for (i = 0; i < nb_output_streams; i++) {
3741             ost = output_streams[i];
3742             if (ost) {
3743                 if (ost->stream_copy)
3744                     av_freep(&ost->st->codec->extradata);
3745                 if (ost->logfile) {
3746                     fclose(ost->logfile);
3747                     ost->logfile = NULL;
3748                 }
3749                 av_freep(&ost->st->codec->subtitle_header);
3750                 av_free(ost->forced_kf_pts);
3751                 av_dict_free(&ost->opts);
3752             }
3753         }
3754     }
3755     return ret;
3756 }
3757
3758 static int opt_frame_crop(const char *opt, const char *arg)
3759 {
3760     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3761     return AVERROR(EINVAL);
3762 }
3763
3764 static int opt_pad(const char *opt, const char *arg)
3765 {
3766     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3767     return -1;
3768 }
3769
3770 static int opt_video_channel(const char *opt, const char *arg)
3771 {
3772     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3773     return opt_default("channel", arg);
3774 }
3775
3776 static int opt_video_standard(const char *opt, const char *arg)
3777 {
3778     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3779     return opt_default("standard", arg);
3780 }
3781
3782 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3783 {
3784     audio_codec_name = arg;
3785     return parse_option(o, "codec:a", arg, options);
3786 }
3787
3788 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3789 {
3790     video_codec_name = arg;
3791     return parse_option(o, "codec:v", arg, options);
3792 }
3793
3794 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3795 {
3796     subtitle_codec_name = arg;
3797     return parse_option(o, "codec:s", arg, options);
3798 }
3799
3800 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3801 {
3802     return parse_option(o, "codec:d", arg, options);
3803 }
3804
3805 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3806 {
3807     StreamMap *m = NULL;
3808     int i, negative = 0, file_idx;
3809     int sync_file_idx = -1, sync_stream_idx = 0;
3810     char *p, *sync;
3811     char *map;
3812
3813     if (*arg == '-') {
3814         negative = 1;
3815         arg++;
3816     }
3817     map = av_strdup(arg);
3818
3819     /* parse sync stream first, just pick first matching stream */
3820     if (sync = strchr(map, ',')) {
3821         *sync = 0;
3822         sync_file_idx = strtol(sync + 1, &sync, 0);
3823         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3824             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3825             exit_program(1);
3826         }
3827         if (*sync)
3828             sync++;
3829         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3830             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3831                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3832                 sync_stream_idx = i;
3833                 break;
3834             }
3835         if (i == input_files[sync_file_idx]->nb_streams) {
3836             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3837                                        "match any streams.\n", arg);
3838             exit_program(1);
3839         }
3840     }
3841
3842
3843     if (map[0] == '[') {
3844         /* this mapping refers to lavfi output */
3845         const char *c = map + 1;
3846         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3847                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3848         m = &o->stream_maps[o->nb_stream_maps - 1];
3849         m->linklabel = av_get_token(&c, "]");
3850         if (!m->linklabel) {
3851             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3852             exit_program(1);
3853         }
3854     } else {
3855         file_idx = strtol(map, &p, 0);
3856         if (file_idx >= nb_input_files || file_idx < 0) {
3857             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3858             exit_program(1);
3859         }
3860         if (negative)
3861             /* disable some already defined maps */
3862             for (i = 0; i < o->nb_stream_maps; i++) {
3863                 m = &o->stream_maps[i];
3864                 if (file_idx == m->file_index &&
3865                     check_stream_specifier(input_files[m->file_index]->ctx,
3866                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3867                                            *p == ':' ? p + 1 : p) > 0)
3868                     m->disabled = 1;
3869             }
3870         else
3871             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3872                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3873                             *p == ':' ? p + 1 : p) <= 0)
3874                     continue;
3875                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3876                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3877                 m = &o->stream_maps[o->nb_stream_maps - 1];
3878
3879                 m->file_index   = file_idx;
3880                 m->stream_index = i;
3881
3882                 if (sync_file_idx >= 0) {
3883                     m->sync_file_index   = sync_file_idx;
3884                     m->sync_stream_index = sync_stream_idx;
3885                 } else {
3886                     m->sync_file_index   = file_idx;
3887                     m->sync_stream_index = i;
3888                 }
3889             }
3890     }
3891
3892     if (!m) {
3893         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3894         exit_program(1);
3895     }
3896
3897     av_freep(&map);
3898     return 0;
3899 }
3900
3901 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3902 {
3903     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3904                                 &o->nb_attachments, o->nb_attachments + 1);
3905     o->attachments[o->nb_attachments - 1] = arg;
3906     return 0;
3907 }
3908
3909 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3910 {
3911     int n;
3912     AVStream *st;
3913     AudioChannelMap *m;
3914
3915     o->audio_channel_maps =
3916         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3917                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3918     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3919
3920     /* muted channel syntax */
3921     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3922     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3923         m->file_idx = m->stream_idx = -1;
3924         if (n == 1)
3925             m->ofile_idx = m->ostream_idx = -1;
3926         return 0;
3927     }
3928
3929     /* normal syntax */
3930     n = sscanf(arg, "%d.%d.%d:%d.%d",
3931                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3932                &m->ofile_idx, &m->ostream_idx);
3933
3934     if (n != 3 && n != 5) {
3935         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3936                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3937         exit_program(1);
3938     }
3939
3940     if (n != 5) // only file.stream.channel specified
3941         m->ofile_idx = m->ostream_idx = -1;
3942
3943     /* check input */
3944     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3945         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3946                m->file_idx);
3947         exit_program(1);
3948     }
3949     if (m->stream_idx < 0 ||
3950         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3951         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3952                m->file_idx, m->stream_idx);
3953         exit_program(1);
3954     }
3955     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3956     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3957         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3958                m->file_idx, m->stream_idx);
3959         exit_program(1);
3960     }
3961     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3962         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3963                m->file_idx, m->stream_idx, m->channel_idx);
3964         exit_program(1);
3965     }
3966     return 0;
3967 }
3968
3969 /**
3970  * Parse a metadata specifier in arg.
3971  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3972  * @param index for type c/p, chapter/program index is written here
3973  * @param stream_spec for type s, the stream specifier is written here
3974  */
3975 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3976 {
3977     if (*arg) {
3978         *type = *arg;
3979         switch (*arg) {
3980         case 'g':
3981             break;
3982         case 's':
3983             if (*(++arg) && *arg != ':') {
3984                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3985                 exit_program(1);
3986             }
3987             *stream_spec = *arg == ':' ? arg + 1 : "";
3988             break;
3989         case 'c':
3990         case 'p':
3991             if (*(++arg) == ':')
3992                 *index = strtol(++arg, NULL, 0);
3993             break;
3994         default:
3995             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3996             exit_program(1);
3997         }
3998     } else
3999         *type = 'g';
4000 }
4001
4002 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
4003 {
4004     AVDictionary **meta_in = NULL;
4005     AVDictionary **meta_out = NULL;
4006     int i, ret = 0;
4007     char type_in, type_out;
4008     const char *istream_spec = NULL, *ostream_spec = NULL;
4009     int idx_in = 0, idx_out = 0;
4010
4011     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
4012     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
4013
4014     if (!ic) {
4015         if (type_out == 'g' || !*outspec)
4016             o->metadata_global_manual = 1;
4017         if (type_out == 's' || !*outspec)
4018             o->metadata_streams_manual = 1;
4019         if (type_out == 'c' || !*outspec)
4020             o->metadata_chapters_manual = 1;
4021         return 0;
4022     }
4023
4024     if (type_in == 'g' || type_out == 'g')
4025         o->metadata_global_manual = 1;
4026     if (type_in == 's' || type_out == 's')
4027         o->metadata_streams_manual = 1;
4028     if (type_in == 'c' || type_out == 'c')
4029         o->metadata_chapters_manual = 1;
4030
4031 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4032     if ((index) < 0 || (index) >= (nb_elems)) {\
4033         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
4034                 (desc), (index));\
4035         exit_program(1);\
4036     }
4037
4038 #define SET_DICT(type, meta, context, index)\
4039         switch (type) {\
4040         case 'g':\
4041             meta = &context->metadata;\
4042             break;\
4043         case 'c':\
4044             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
4045             meta = &context->chapters[index]->metadata;\
4046             break;\
4047         case 'p':\
4048             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
4049             meta = &context->programs[index]->metadata;\
4050             break;\
4051         }\
4052
4053     SET_DICT(type_in, meta_in, ic, idx_in);
4054     SET_DICT(type_out, meta_out, oc, idx_out);
4055
4056     /* for input streams choose first matching stream */
4057     if (type_in == 's') {
4058         for (i = 0; i < ic->nb_streams; i++) {
4059             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
4060                 meta_in = &ic->streams[i]->metadata;
4061                 break;
4062             } else if (ret < 0)
4063                 exit_program(1);
4064         }
4065         if (!meta_in) {
4066             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
4067             exit_program(1);
4068         }
4069     }
4070
4071     if (type_out == 's') {
4072         for (i = 0; i < oc->nb_streams; i++) {
4073             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
4074                 meta_out = &oc->streams[i]->metadata;
4075                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4076             } else if (ret < 0)
4077                 exit_program(1);
4078         }
4079     } else
4080         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4081
4082     return 0;
4083 }
4084
4085 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
4086 {
4087     char buf[128];
4088     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
4089     struct tm time = *gmtime((time_t*)&recording_timestamp);
4090     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
4091     parse_option(o, "metadata", buf, options);
4092
4093     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
4094                                  "tag instead.\n", opt);
4095     return 0;
4096 }
4097
4098 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4099 {
4100     const char *codec_string = encoder ? "encoder" : "decoder";
4101     AVCodec *codec;
4102
4103     codec = encoder ?
4104         avcodec_find_encoder_by_name(name) :
4105         avcodec_find_decoder_by_name(name);
4106     if (!codec) {
4107         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4108         exit_program(1);
4109     }
4110     if (codec->type != type) {
4111         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4112         exit_program(1);
4113     }
4114     return codec;
4115 }
4116
4117 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4118 {
4119     char *codec_name = NULL;
4120
4121     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4122     if (codec_name) {
4123         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4124         st->codec->codec_id = codec->id;
4125         return codec;
4126     } else
4127         return avcodec_find_decoder(st->codec->codec_id);
4128 }
4129
4130 /**
4131  * Add all the streams from the given input file to the global
4132  * list of input streams.
4133  */
4134 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4135 {
4136     int i;
4137     char *next, *codec_tag = NULL;
4138
4139     for (i = 0; i < ic->nb_streams; i++) {
4140         AVStream *st = ic->streams[i];
4141         AVCodecContext *dec = st->codec;
4142         InputStream *ist = av_mallocz(sizeof(*ist));
4143
4144         if (!ist)
4145             exit_program(1);
4146
4147         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4148         input_streams[nb_input_streams - 1] = ist;
4149
4150         ist->st = st;
4151         ist->file_index = nb_input_files;
4152         ist->discard = 1;
4153         st->discard  = AVDISCARD_ALL;
4154         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4155
4156         ist->ts_scale = 1.0;
4157         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4158
4159         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4160         if (codec_tag) {
4161             uint32_t tag = strtol(codec_tag, &next, 0);
4162             if (*next)
4163                 tag = AV_RL32(codec_tag);
4164             st->codec->codec_tag = tag;
4165         }
4166
4167         ist->dec = choose_decoder(o, ic, st);
4168
4169         switch (dec->codec_type) {
4170         case AVMEDIA_TYPE_VIDEO:
4171             if(!ist->dec)
4172                 ist->dec = avcodec_find_decoder(dec->codec_id);
4173             if (dec->lowres) {
4174                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4175             }
4176
4177             ist->resample_height  = dec->height;
4178             ist->resample_width   = dec->width;
4179             ist->resample_pix_fmt = dec->pix_fmt;
4180
4181             break;
4182         case AVMEDIA_TYPE_AUDIO:
4183             guess_input_channel_layout(ist);
4184
4185             ist->resample_sample_fmt     = dec->sample_fmt;
4186             ist->resample_sample_rate    = dec->sample_rate;
4187             ist->resample_channels       = dec->channels;
4188             ist->resample_channel_layout = dec->channel_layout;
4189
4190             break;
4191         case AVMEDIA_TYPE_DATA:
4192         case AVMEDIA_TYPE_SUBTITLE:
4193             if(!ist->dec)
4194                 ist->dec = avcodec_find_decoder(dec->codec_id);
4195             break;
4196         case AVMEDIA_TYPE_ATTACHMENT:
4197         case AVMEDIA_TYPE_UNKNOWN:
4198             break;
4199         default:
4200             abort();
4201         }
4202     }
4203 }
4204
4205 static void assert_file_overwrite(const char *filename)
4206 {
4207     if ((!file_overwrite || no_file_overwrite) &&
4208         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4209          av_strstart(filename, "file:", NULL))) {
4210         if (avio_check(filename, 0) == 0) {
4211             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4212                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4213                 fflush(stderr);
4214                 term_exit();
4215                 signal(SIGINT, SIG_DFL);
4216                 if (!read_yesno()) {
4217                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4218                     exit_program(1);
4219                 }
4220                 term_init();
4221             }
4222             else {
4223                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4224                 exit_program(1);
4225             }
4226         }
4227     }
4228 }
4229
4230 static void dump_attachment(AVStream *st, const char *filename)
4231 {
4232     int ret;
4233     AVIOContext *out = NULL;
4234     AVDictionaryEntry *e;
4235
4236     if (!st->codec->extradata_size) {
4237         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4238                nb_input_files - 1, st->index);
4239         return;
4240     }
4241     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4242         filename = e->value;
4243     if (!*filename) {
4244         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4245                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4246         exit_program(1);
4247     }
4248
4249     assert_file_overwrite(filename);
4250
4251     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4252         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4253                filename);
4254         exit_program(1);
4255     }
4256
4257     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4258     avio_flush(out);
4259     avio_close(out);
4260 }
4261
4262 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4263 {
4264     AVFormatContext *ic;
4265     AVInputFormat *file_iformat = NULL;
4266     int err, i, ret;
4267     int64_t timestamp;
4268     uint8_t buf[128];
4269     AVDictionary **opts;
4270     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4271
4272     if (o->format) {
4273         if (!(file_iformat = av_find_input_format(o->format))) {
4274             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4275             exit_program(1);
4276         }
4277     }
4278
4279     if (!strcmp(filename, "-"))
4280         filename = "pipe:";
4281
4282     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4283                     !strcmp(filename, "/dev/stdin");
4284
4285     /* get default parameters from command line */
4286     ic = avformat_alloc_context();
4287  &nb