ffmpeg: add support for audio filters.
[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 "libavutil/opt.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/dict.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/pixdesc.h"
48 #include "libavutil/avstring.h"
49 #include "libavutil/libm.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/timestamp.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 # include "libavfilter/avcodec.h"
58 # include "libavfilter/avfilter.h"
59 # include "libavfilter/avfiltergraph.h"
60 # include "libavfilter/buffersink.h"
61 # include "libavfilter/buffersrc.h"
62
63 #if HAVE_SYS_RESOURCE_H
64 #include <sys/types.h>
65 #include <sys/time.h>
66 #include <sys/resource.h>
67 #elif HAVE_GETPROCESSTIMES
68 #include <windows.h>
69 #endif
70 #if HAVE_GETPROCESSMEMORYINFO
71 #include <windows.h>
72 #include <psapi.h>
73 #endif
74
75 #if HAVE_SYS_SELECT_H
76 #include <sys/select.h>
77 #endif
78
79 #if HAVE_TERMIOS_H
80 #include <fcntl.h>
81 #include <sys/ioctl.h>
82 #include <sys/time.h>
83 #include <termios.h>
84 #elif HAVE_KBHIT
85 #include <conio.h>
86 #endif
87 #include <time.h>
88
89 #include "cmdutils.h"
90
91 #include "libavutil/avassert.h"
92
93 #define VSYNC_AUTO       -1
94 #define VSYNC_PASSTHROUGH 0
95 #define VSYNC_CFR         1
96 #define VSYNC_VFR         2
97 #define VSYNC_DROP        0xff
98
99 // #define SRCA
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 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     AVBitStreamFilterContext *bitstream_filters;
280     AVCodec *enc;
281     int64_t max_frames;
282     AVFrame *filtered_frame;
283
284     /* video only */
285     AVRational frame_rate;
286     int force_fps;
287     int top_field_first;
288
289     float frame_aspect_ratio;
290     float last_quality;
291
292     /* forced key frames */
293     int64_t *forced_kf_pts;
294     int forced_kf_count;
295     int forced_kf_index;
296
297     FILE *logfile;
298
299     OutputFilter *filter;
300     char *avfilter;
301
302     int64_t sws_flags;
303     int64_t swr_dither_method;
304     double swr_dither_scale;
305     AVDictionary *opts;
306     int is_past_recording_time;
307     int stream_copy;
308     const char *attachment_filename;
309     int copy_initial_nonkeyframes;
310
311     enum PixelFormat pix_fmts[2];
312     int keep_pix_fmt;
313 } OutputStream;
314
315
316 #if HAVE_TERMIOS_H
317
318 /* init terminal so that we can grab keys */
319 static struct termios oldtty;
320 static int restore_tty;
321 #endif
322
323 typedef struct OutputFile {
324     AVFormatContext *ctx;
325     AVDictionary *opts;
326     int ost_index;       /* index of the first stream in output_streams */
327     int64_t recording_time; /* desired length of the resulting file in microseconds */
328     int64_t start_time;     /* start time in microseconds */
329     uint64_t limit_filesize; /* filesize limit expressed in bytes */
330 } OutputFile;
331
332 static InputStream **input_streams = NULL;
333 static int        nb_input_streams = 0;
334 static InputFile   **input_files   = NULL;
335 static int        nb_input_files   = 0;
336
337 static OutputStream **output_streams = NULL;
338 static int         nb_output_streams = 0;
339 static OutputFile   **output_files   = NULL;
340 static int         nb_output_files   = 0;
341
342 static FilterGraph **filtergraphs;
343 int               nb_filtergraphs;
344
345 typedef struct OptionsContext {
346     /* input/output options */
347     int64_t start_time;
348     const char *format;
349
350     SpecifierOpt *codec_names;
351     int        nb_codec_names;
352     SpecifierOpt *audio_channels;
353     int        nb_audio_channels;
354     SpecifierOpt *audio_sample_rate;
355     int        nb_audio_sample_rate;
356     SpecifierOpt *frame_rates;
357     int        nb_frame_rates;
358     SpecifierOpt *frame_sizes;
359     int        nb_frame_sizes;
360     SpecifierOpt *frame_pix_fmts;
361     int        nb_frame_pix_fmts;
362
363     /* input options */
364     int64_t input_ts_offset;
365     int rate_emu;
366
367     SpecifierOpt *ts_scale;
368     int        nb_ts_scale;
369     SpecifierOpt *dump_attachment;
370     int        nb_dump_attachment;
371
372     /* output options */
373     StreamMap *stream_maps;
374     int     nb_stream_maps;
375     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
376     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
377     int metadata_global_manual;
378     int metadata_streams_manual;
379     int metadata_chapters_manual;
380     const char **attachments;
381     int       nb_attachments;
382
383     int chapters_input_file;
384
385     int64_t recording_time;
386     uint64_t limit_filesize;
387     float mux_preload;
388     float mux_max_delay;
389
390     int video_disable;
391     int audio_disable;
392     int subtitle_disable;
393     int data_disable;
394
395     /* indexed by output file stream index */
396     int   *streamid_map;
397     int nb_streamid_map;
398
399     SpecifierOpt *metadata;
400     int        nb_metadata;
401     SpecifierOpt *max_frames;
402     int        nb_max_frames;
403     SpecifierOpt *bitstream_filters;
404     int        nb_bitstream_filters;
405     SpecifierOpt *codec_tags;
406     int        nb_codec_tags;
407     SpecifierOpt *sample_fmts;
408     int        nb_sample_fmts;
409     SpecifierOpt *qscale;
410     int        nb_qscale;
411     SpecifierOpt *forced_key_frames;
412     int        nb_forced_key_frames;
413     SpecifierOpt *force_fps;
414     int        nb_force_fps;
415     SpecifierOpt *frame_aspect_ratios;
416     int        nb_frame_aspect_ratios;
417     SpecifierOpt *rc_overrides;
418     int        nb_rc_overrides;
419     SpecifierOpt *intra_matrices;
420     int        nb_intra_matrices;
421     SpecifierOpt *inter_matrices;
422     int        nb_inter_matrices;
423     SpecifierOpt *top_field_first;
424     int        nb_top_field_first;
425     SpecifierOpt *metadata_map;
426     int        nb_metadata_map;
427     SpecifierOpt *presets;
428     int        nb_presets;
429     SpecifierOpt *copy_initial_nonkeyframes;
430     int        nb_copy_initial_nonkeyframes;
431     SpecifierOpt *filters;
432     int        nb_filters;
433 } OptionsContext;
434
435 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
436 {\
437     int i, ret;\
438     for (i = 0; i < o->nb_ ## name; i++) {\
439         char *spec = o->name[i].specifier;\
440         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
441             outvar = o->name[i].u.type;\
442         else if (ret < 0)\
443             exit_program(1);\
444     }\
445 }
446
447 static int64_t getutime(void)
448 {
449 #if HAVE_GETRUSAGE
450     struct rusage rusage;
451
452     getrusage(RUSAGE_SELF, &rusage);
453     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
454 #elif HAVE_GETPROCESSTIMES
455     HANDLE proc;
456     FILETIME c, e, k, u;
457     proc = GetCurrentProcess();
458     GetProcessTimes(proc, &c, &e, &k, &u);
459     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
460 #else
461     return av_gettime();
462 #endif
463 }
464
465 static void update_benchmark(const char *fmt, ...)
466 {
467     if (do_benchmark_all) {
468         int64_t t = getutime();
469         va_list va;
470         char buf[1024];
471
472         if (fmt) {
473             va_start(va, fmt);
474             vsnprintf(buf, sizeof(buf), fmt, va);
475             va_end(va);
476             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
477         }
478         current_time = t;
479     }
480 }
481
482 static void reset_options(OptionsContext *o, int is_input)
483 {
484     const OptionDef *po = options;
485     OptionsContext bak= *o;
486     int i;
487
488     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
489     while (po->name) {
490         void *dst = (uint8_t*)o + po->u.off;
491
492         if (po->flags & OPT_SPEC) {
493             SpecifierOpt **so = dst;
494             int i, *count = (int*)(so + 1);
495             for (i = 0; i < *count; i++) {
496                 av_freep(&(*so)[i].specifier);
497                 if (po->flags & OPT_STRING)
498                     av_freep(&(*so)[i].u.str);
499             }
500             av_freep(so);
501             *count = 0;
502         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
503             av_freep(dst);
504         po++;
505     }
506
507     for (i = 0; i < o->nb_stream_maps; i++)
508         av_freep(&o->stream_maps[i].linklabel);
509     av_freep(&o->stream_maps);
510     av_freep(&o->audio_channel_maps);
511     av_freep(&o->streamid_map);
512
513     memset(o, 0, sizeof(*o));
514
515     if(is_input) o->recording_time = bak.recording_time;
516     else         o->recording_time = INT64_MAX;
517     o->mux_max_delay  = 0.7;
518     o->limit_filesize = UINT64_MAX;
519     o->chapters_input_file = INT_MAX;
520
521     uninit_opts();
522     init_opts();
523 }
524
525 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
526 {
527     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
528     int i, ret;
529     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
530     int h_chroma_shift, v_chroma_shift;
531     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
532     int w = s->width, h = s->height;
533
534     if (!buf)
535         return AVERROR(ENOMEM);
536
537     avcodec_align_dimensions(s, &w, &h);
538
539     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
540         w += 2*edge;
541         h += 2*edge;
542     }
543
544     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
545                               s->pix_fmt, 32)) < 0) {
546         av_freep(&buf);
547         return ret;
548     }
549     /* XXX this shouldn't be needed, but some tests break without this line
550      * those decoders are buggy and need to be fixed.
551      * the following tests fail:
552      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
553      */
554     memset(buf->base[0], 128, ret);
555
556     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
557     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
558         const int h_shift = i==0 ? 0 : h_chroma_shift;
559         const int v_shift = i==0 ? 0 : v_chroma_shift;
560         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
561             buf->data[i] = buf->base[i];
562         else
563             buf->data[i] = buf->base[i] +
564                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
565                                    (pixel_size*edge >> h_shift), 32);
566     }
567     buf->w       = s->width;
568     buf->h       = s->height;
569     buf->pix_fmt = s->pix_fmt;
570     buf->ist     = ist;
571
572     *pbuf = buf;
573     return 0;
574 }
575
576 static void free_buffer_pool(InputStream *ist)
577 {
578     FrameBuffer *buf = ist->buffer_pool;
579     while (buf) {
580         ist->buffer_pool = buf->next;
581         av_freep(&buf->base[0]);
582         av_free(buf);
583         buf = ist->buffer_pool;
584     }
585 }
586
587 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
588 {
589     av_assert0(buf->refcount > 0);
590     buf->refcount--;
591     if (!buf->refcount) {
592         FrameBuffer *tmp;
593         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
594             av_assert1(tmp != buf);
595         buf->next = ist->buffer_pool;
596         ist->buffer_pool = buf;
597     }
598 }
599
600 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
601 {
602     InputStream *ist = s->opaque;
603     FrameBuffer *buf;
604     int ret, i;
605
606     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
607         return -1;
608
609     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
610         return ret;
611
612     buf              = ist->buffer_pool;
613     ist->buffer_pool = buf->next;
614     buf->next        = NULL;
615     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
616         av_freep(&buf->base[0]);
617         av_free(buf);
618         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
619             return ret;
620     }
621     av_assert0(!buf->refcount);
622     buf->refcount++;
623
624     frame->opaque        = buf;
625     frame->type          = FF_BUFFER_TYPE_USER;
626     frame->extended_data = frame->data;
627     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
628     frame->width         = buf->w;
629     frame->height        = buf->h;
630     frame->format        = buf->pix_fmt;
631     frame->sample_aspect_ratio = s->sample_aspect_ratio;
632
633     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
634         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
635         frame->data[i]     = buf->data[i];
636         frame->linesize[i] = buf->linesize[i];
637     }
638
639     return 0;
640 }
641
642 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
643 {
644     InputStream *ist = s->opaque;
645     FrameBuffer *buf = frame->opaque;
646     int i;
647
648     if(frame->type!=FF_BUFFER_TYPE_USER)
649         return avcodec_default_release_buffer(s, frame);
650
651     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
652         frame->data[i] = NULL;
653
654     unref_buffer(ist, buf);
655 }
656
657 static void filter_release_buffer(AVFilterBuffer *fb)
658 {
659     FrameBuffer *buf = fb->priv;
660     av_free(fb);
661     unref_buffer(buf->ist, buf);
662 }
663
664 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
665 {
666     if (codec && codec->pix_fmts) {
667         const enum PixelFormat *p = codec->pix_fmts;
668         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
669         enum PixelFormat best= PIX_FMT_NONE;
670         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
671             if (st->codec->codec_id == CODEC_ID_MJPEG) {
672                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
673             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
674                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
675                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
676             }
677         }
678         for (; *p != PIX_FMT_NONE; p++) {
679             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
680             if (*p == target)
681                 break;
682         }
683         if (*p == PIX_FMT_NONE) {
684             if (target != PIX_FMT_NONE)
685                 av_log(NULL, AV_LOG_WARNING,
686                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
687                        av_pix_fmt_descriptors[target].name,
688                        codec->name,
689                        av_pix_fmt_descriptors[best].name);
690             return best;
691         }
692     }
693     return target;
694 }
695
696 static char *choose_pix_fmts(OutputStream *ost)
697 {
698      if (ost->keep_pix_fmt) {
699         if (ost->filter)
700             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
701                                             AVFILTER_AUTO_CONVERT_NONE);
702         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
703             return NULL;
704         ost->pix_fmts[0] = ost->st->codec->pix_fmt;
705         return ost->pix_fmts;
706     }
707     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
708         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
709     } else if (ost->enc->pix_fmts) {
710         const enum PixelFormat *p;
711         AVIOContext *s = NULL;
712         uint8_t *ret;
713         int len;
714
715         if (avio_open_dyn_buf(&s) < 0)
716             exit_program(1);
717
718         p = ost->enc->pix_fmts;
719         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
720             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
721                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
722             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
724                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
725             }
726         }
727
728         for (; *p != PIX_FMT_NONE; p++) {
729             const char *name = av_get_pix_fmt_name(*p);
730             avio_printf(s, "%s:", name);
731         }
732         len = avio_close_dyn_buf(s, &ret);
733         ret[len - 1] = 0;
734         return ret;
735     } else
736         return NULL;
737 }
738
739 /**
740  * Define a function for building a string containing a list of
741  * allowed formats,
742  */
743 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
744 static char *choose_ ## var ## s(OutputStream *ost)                             \
745 {                                                                               \
746     if (ost->st->codec->var != none) {                                          \
747         get_name(ost->st->codec->var);                                          \
748         return av_strdup(name);                                                 \
749     } else if (ost->enc->supported_list) {                                      \
750         const type *p;                                                          \
751         AVIOContext *s = NULL;                                                  \
752         uint8_t *ret;                                                           \
753         int len;                                                                \
754                                                                                 \
755         if (avio_open_dyn_buf(&s) < 0)                                          \
756             exit_program(1);                                                    \
757                                                                                 \
758         for (p = ost->enc->supported_list; *p != none; p++) {                   \
759             get_name(*p);                                                       \
760             avio_printf(s, "%s" separator, name);                               \
761         }                                                                       \
762         len = avio_close_dyn_buf(s, &ret);                                      \
763         ret[len - 1] = 0;                                                       \
764         return ret;                                                             \
765     } else                                                                      \
766         return NULL;                                                            \
767 }
768
769 #define GET_PIX_FMT_NAME(pix_fmt)\
770     const char *name = av_get_pix_fmt_name(pix_fmt);
771
772 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
773 //                   GET_PIX_FMT_NAME, ":")
774
775 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
776     const char *name = av_get_sample_fmt_name(sample_fmt)
777
778 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
779                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
780
781 #define GET_SAMPLE_RATE_NAME(rate)\
782     char name[16];\
783     snprintf(name, sizeof(name), "%d", rate);
784
785 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
786                   GET_SAMPLE_RATE_NAME, ",")
787
788 #define GET_CH_LAYOUT_NAME(ch_layout)\
789     char name[16];\
790     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
791
792 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
793                   GET_CH_LAYOUT_NAME, ",")
794
795 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
796                                    AVFilterContext **out_filter)
797 {
798     InputStream  *ist = fg->inputs[0]->ist;
799     OutputStream *ost = fg->outputs[0]->ost;
800     AVCodecContext *codec  = ost->st->codec;
801     AVCodecContext *icodec = ist->st->codec;
802     char *sample_fmts, *sample_rates, *channel_layouts;
803     char args[256];
804     int ret;
805
806     avfilter_graph_free(&fg->graph);
807     if (!(fg->graph = avfilter_graph_alloc()))
808         return AVERROR(ENOMEM);
809
810 #ifdef SRCA
811     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
812              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
813 #else
814     snprintf(args, sizeof(args), "%d/%d:%d:%s:"
815              "0x%"PRIx64, ist->st->time_base.num,
816 #endif
817              ist->st->time_base.den, icodec->sample_rate,
818              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
819     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
820                                        avfilter_get_by_name("abuffer"),
821                                        "src", args, NULL, fg->graph);
822     if (ret < 0)
823         return ret;
824
825     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
826                                        avfilter_get_by_name("abuffersink_old"),
827                                        "out", NULL, NULL, fg->graph);
828     if (ret < 0)
829         return ret;
830
831     *in_filter  = fg->inputs[0]->filter;
832     *out_filter = fg->outputs[0]->filter;
833
834     if (codec->channels && !codec->channel_layout)
835         codec->channel_layout = av_get_default_channel_layout(codec->channels);
836
837     sample_fmts     = choose_sample_fmts(ost);
838     sample_rates    = choose_sample_rates(ost);
839     channel_layouts = choose_channel_layouts(ost);
840     if (sample_fmts || sample_rates || channel_layouts) {
841         AVFilterContext *format;
842         char args[256];
843         int len = 0;
844
845         if (sample_fmts)
846             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
847                             sample_fmts);
848         if (sample_rates)
849             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
850                             sample_rates);
851         if (channel_layouts)
852             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
853                             channel_layouts);
854         args[len - 1] = 0;
855
856         av_freep(&sample_fmts);
857         av_freep(&sample_rates);
858         av_freep(&channel_layouts);
859
860         ret = avfilter_graph_create_filter(&format,
861                                            avfilter_get_by_name("aformat"),
862                                            "aformat", args, NULL, fg->graph);
863         if (ret < 0)
864             return ret;
865
866         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
867         if (ret < 0)
868             return ret;
869
870         *out_filter = format;
871     }
872
873     return 0;
874 }
875
876 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
877                                    AVFilterContext **out_filter)
878 {
879     InputStream  *ist = fg->inputs[0]->ist;
880     OutputStream *ost = fg->outputs[0]->ost;
881     AVFilterContext *filter;
882     AVCodecContext *codec = ost->st->codec;
883     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
884     char *pix_fmts;
885     AVRational sample_aspect_ratio;
886     char args[255];
887     int ret;
888
889     if (ist->st->sample_aspect_ratio.num) {
890         sample_aspect_ratio = ist->st->sample_aspect_ratio;
891     } else
892         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
893
894     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
895              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
896              sample_aspect_ratio.num, sample_aspect_ratio.den, SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
897
898     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
899                                        avfilter_get_by_name("buffer"),
900                                        "src", args, NULL, fg->graph);
901     if (ret < 0)
902         return ret;
903
904 #if FF_API_OLD_VSINK_API
905     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
906                                        avfilter_get_by_name("buffersink"),
907                                        "out", NULL, NULL, fg->graph);
908 #else
909     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
910                                        avfilter_get_by_name("buffersink"),
911                                        "out", NULL, buffersink_params, fg->graph);
912 #endif
913     av_freep(&buffersink_params);
914
915     if (ret < 0)
916         return ret;
917     *in_filter  = fg->inputs[0]->filter;
918     *out_filter = fg->outputs[0]->filter;
919
920     if (codec->width || codec->height) {
921         snprintf(args, 255, "%d:%d:flags=0x%X",
922                  codec->width,
923                  codec->height,
924                  (unsigned)ost->sws_flags);
925         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
926                                                 NULL, args, NULL, fg->graph)) < 0)
927             return ret;
928         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
929             return ret;
930         *in_filter = filter;
931     }
932
933     if ((pix_fmts = choose_pix_fmts(ost))) {
934         if ((ret = avfilter_graph_create_filter(&filter,
935                                                 avfilter_get_by_name("format"),
936                                                 "format", pix_fmts, NULL,
937                                                 fg->graph)) < 0)
938             return ret;
939         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
940             return ret;
941
942         *out_filter = filter;
943         av_freep(&pix_fmts);
944     }
945
946     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
947     fg->graph->scale_sws_opts = av_strdup(args);
948
949     return 0;
950 }
951
952 static int configure_simple_filtergraph(FilterGraph *fg)
953 {
954     OutputStream *ost = fg->outputs[0]->ost;
955     AVFilterContext *in_filter, *out_filter;
956     int ret;
957
958     avfilter_graph_free(&fg->graph);
959     fg->graph = avfilter_graph_alloc();
960     if (!fg->graph)
961         return AVERROR(ENOMEM);
962
963     switch (ost->st->codec->codec_type) {
964     case AVMEDIA_TYPE_VIDEO:
965         ret = configure_video_filters(fg, &in_filter, &out_filter);
966         break;
967     case AVMEDIA_TYPE_AUDIO:
968         ret = configure_audio_filters(fg, &in_filter, &out_filter);
969         break;
970     default: av_assert0(0);
971     }
972     if (ret < 0)
973         return ret;
974
975     if (ost->avfilter) {
976         AVFilterInOut *outputs = avfilter_inout_alloc();
977         AVFilterInOut *inputs  = avfilter_inout_alloc();
978
979         outputs->name    = av_strdup("in");
980         outputs->filter_ctx = in_filter;
981         outputs->pad_idx = 0;
982         outputs->next    = NULL;
983
984         inputs->name    = av_strdup("out");
985         inputs->filter_ctx = out_filter;
986         inputs->pad_idx = 0;
987         inputs->next    = NULL;
988
989         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
990             return ret;
991         av_freep(&ost->avfilter);
992     } else {
993         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
994             return ret;
995     }
996
997     if (ost->keep_pix_fmt)
998         avfilter_graph_set_auto_convert(fg->graph,
999                                         AVFILTER_AUTO_CONVERT_NONE);
1000
1001     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1002         return ret;
1003
1004     ost->filter = fg->outputs[0];
1005
1006     return 0;
1007 }
1008
1009 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1010 {
1011     FilterGraph *fg = av_mallocz(sizeof(*fg));
1012
1013     if (!fg)
1014         exit_program(1);
1015     fg->index = nb_filtergraphs;
1016
1017     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1018                              fg->nb_outputs + 1);
1019     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1020         exit_program(1);
1021     fg->outputs[0]->ost   = ost;
1022     fg->outputs[0]->graph = fg;
1023
1024     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1025                             fg->nb_inputs + 1);
1026     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1027         exit_program(1);
1028     fg->inputs[0]->ist   = ist;
1029     fg->inputs[0]->graph = fg;
1030
1031     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1032                               &ist->nb_filters, ist->nb_filters + 1);
1033     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1034
1035     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1036                               &nb_filtergraphs, nb_filtergraphs + 1);
1037     filtergraphs[nb_filtergraphs - 1] = fg;
1038
1039     return fg;
1040 }
1041
1042 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1043 {
1044     InputStream *ist = NULL;
1045     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1046     int i;
1047
1048     // TODO: support other filter types
1049     if (type != AVMEDIA_TYPE_VIDEO) {
1050         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
1051         exit_program(1);
1052     }
1053
1054     if (in->name) {
1055         AVFormatContext *s;
1056         AVStream       *st = NULL;
1057         char *p;
1058         int file_idx = strtol(in->name, &p, 0);
1059
1060         if (file_idx < 0 || file_idx >= nb_input_files) {
1061             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1062                    file_idx, fg->graph_desc);
1063             exit_program(1);
1064         }
1065         s = input_files[file_idx]->ctx;
1066
1067         for (i = 0; i < s->nb_streams; i++) {
1068             if (s->streams[i]->codec->codec_type != type)
1069                 continue;
1070             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1071                 st = s->streams[i];
1072                 break;
1073             }
1074         }
1075         if (!st) {
1076             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1077                    "matches no streams.\n", p, fg->graph_desc);
1078             exit_program(1);
1079         }
1080         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1081     } else {
1082         /* find the first unused stream of corresponding type */
1083         for (i = 0; i < nb_input_streams; i++) {
1084             ist = input_streams[i];
1085             if (ist->st->codec->codec_type == type && ist->discard)
1086                 break;
1087         }
1088         if (i == nb_input_streams) {
1089             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1090                    "unlabeled input pad %d on filter %s", in->pad_idx,
1091                    in->filter_ctx->name);
1092             exit_program(1);
1093         }
1094     }
1095     ist->discard         = 0;
1096     ist->decoding_needed = 1;
1097     ist->st->discard = AVDISCARD_NONE;
1098
1099     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1100                             &fg->nb_inputs, fg->nb_inputs + 1);
1101     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1102         exit_program(1);
1103     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1104     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1105
1106     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1107                               &ist->nb_filters, ist->nb_filters + 1);
1108     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1109 }
1110
1111 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1112 {
1113     char *pix_fmts;
1114     AVCodecContext *codec = ofilter->ost->st->codec;
1115     AVFilterContext *last_filter = out->filter_ctx;
1116     int pad_idx = out->pad_idx;
1117     int ret;
1118     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1119
1120 #if FF_API_OLD_VSINK_API
1121     ret = avfilter_graph_create_filter(&ofilter->filter,
1122                                        avfilter_get_by_name("buffersink"),
1123                                        "out", NULL, NULL, fg->graph);
1124 #else
1125     ret = avfilter_graph_create_filter(&ofilter->filter,
1126                                        avfilter_get_by_name("buffersink"),
1127                                        "out", NULL, buffersink_params, fg->graph);
1128 #endif
1129     av_freep(&buffersink_params);
1130
1131     if (ret < 0)
1132         return ret;
1133
1134     if (codec->width || codec->height) {
1135         char args[255];
1136         AVFilterContext *filter;
1137
1138         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1139                  codec->width,
1140                  codec->height,
1141                  (unsigned)ofilter->ost->sws_flags);
1142         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1143                                                 NULL, args, NULL, fg->graph)) < 0)
1144             return ret;
1145         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1146             return ret;
1147
1148         last_filter = filter;
1149         pad_idx = 0;
1150     }
1151
1152     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1153         AVFilterContext *filter;
1154         if ((ret = avfilter_graph_create_filter(&filter,
1155                                                 avfilter_get_by_name("format"),
1156                                                 "format", pix_fmts, NULL,
1157                                                 fg->graph)) < 0)
1158             return ret;
1159         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1160             return ret;
1161
1162         last_filter = filter;
1163         pad_idx     = 0;
1164         av_freep(&pix_fmts);
1165     }
1166
1167     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1168         return ret;
1169
1170     return 0;
1171 }
1172
1173 static int configure_complex_filter(FilterGraph *fg)
1174 {
1175     AVFilterInOut *inputs, *outputs, *cur;
1176     int ret, i, init = !fg->graph;
1177
1178     avfilter_graph_free(&fg->graph);
1179     if (!(fg->graph = avfilter_graph_alloc()))
1180         return AVERROR(ENOMEM);
1181
1182     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1183         return ret;
1184
1185     for (cur = inputs; init && cur; cur = cur->next)
1186         init_input_filter(fg, cur);
1187
1188     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1189         InputFilter *ifilter = fg->inputs[i];
1190         InputStream     *ist = ifilter->ist;
1191         AVRational       sar;
1192         char            args[255];
1193
1194         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1195                                                  ist->st->codec->sample_aspect_ratio;
1196         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1197                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1198                  sar.num, sar.den);
1199
1200         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1201                                                 avfilter_get_by_name("buffer"), cur->name,
1202                                                 args, NULL, fg->graph)) < 0)
1203             return ret;
1204         if ((ret = avfilter_link(ifilter->filter, 0,
1205                                  cur->filter_ctx, cur->pad_idx)) < 0)
1206             return ret;
1207     }
1208     avfilter_inout_free(&inputs);
1209
1210     if (!init) {
1211         /* we already know the mappings between lavfi outputs and output streams,
1212          * so we can finish the setup */
1213         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1214             configure_output_filter(fg, fg->outputs[i], cur);
1215         avfilter_inout_free(&outputs);
1216
1217         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1218             return ret;
1219     } else {
1220         /* wait until output mappings are processed */
1221         for (cur = outputs; cur;) {
1222             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1223                                      &fg->nb_outputs, fg->nb_outputs + 1);
1224             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1225                 exit_program(1);
1226             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1227             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1228             cur = cur->next;
1229             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1230         }
1231     }
1232
1233     return 0;
1234 }
1235
1236 static int configure_complex_filters(void)
1237 {
1238     int i, ret = 0;
1239
1240     for (i = 0; i < nb_filtergraphs; i++)
1241         if (!filtergraphs[i]->graph &&
1242             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1243             return ret;
1244     return 0;
1245 }
1246
1247 static int configure_filtergraph(FilterGraph *fg)
1248 {
1249     return fg->graph_desc ? configure_complex_filter(fg) :
1250                             configure_simple_filtergraph(fg);
1251 }
1252
1253 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1254 {
1255     int i;
1256     for (i = 0; i < fg->nb_inputs; i++)
1257         if (fg->inputs[i]->ist == ist)
1258             return 1;
1259     return 0;
1260 }
1261
1262 static void term_exit(void)
1263 {
1264     av_log(NULL, AV_LOG_QUIET, "%s", "");
1265 #if HAVE_TERMIOS_H
1266     if(restore_tty)
1267         tcsetattr (0, TCSANOW, &oldtty);
1268 #endif
1269 }
1270
1271 static volatile int received_sigterm = 0;
1272
1273 static void sigterm_handler(int sig)
1274 {
1275     received_sigterm = sig;
1276     received_nb_signals++;
1277     term_exit();
1278     if(received_nb_signals > 3)
1279         exit(123);
1280 }
1281
1282 static void term_init(void)
1283 {
1284 #if HAVE_TERMIOS_H
1285     if(!run_as_daemon){
1286         struct termios tty;
1287
1288         if (tcgetattr (0, &tty) == 0) {
1289             oldtty = tty;
1290             restore_tty = 1;
1291             atexit(term_exit);
1292
1293             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1294                              |INLCR|IGNCR|ICRNL|IXON);
1295             tty.c_oflag |= OPOST;
1296             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1297             tty.c_cflag &= ~(CSIZE|PARENB);
1298             tty.c_cflag |= CS8;
1299             tty.c_cc[VMIN] = 1;
1300             tty.c_cc[VTIME] = 0;
1301
1302             tcsetattr (0, TCSANOW, &tty);
1303         }
1304         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1305     }
1306 #endif
1307     avformat_network_deinit();
1308
1309     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1310     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1311 #ifdef SIGXCPU
1312     signal(SIGXCPU, sigterm_handler);
1313 #endif
1314 }
1315
1316 /* read a key without blocking */
1317 static int read_key(void)
1318 {
1319     unsigned char ch;
1320 #if HAVE_TERMIOS_H
1321     int n = 1;
1322     struct timeval tv;
1323     fd_set rfds;
1324
1325     FD_ZERO(&rfds);
1326     FD_SET(0, &rfds);
1327     tv.tv_sec = 0;
1328     tv.tv_usec = 0;
1329     n = select(1, &rfds, NULL, NULL, &tv);
1330     if (n > 0) {
1331         n = read(0, &ch, 1);
1332         if (n == 1)
1333             return ch;
1334
1335         return n;
1336     }
1337 #elif HAVE_KBHIT
1338 #    if HAVE_PEEKNAMEDPIPE
1339     static int is_pipe;
1340     static HANDLE input_handle;
1341     DWORD dw, nchars;
1342     if(!input_handle){
1343         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1344         is_pipe = !GetConsoleMode(input_handle, &dw);
1345     }
1346
1347     if (stdin->_cnt > 0) {
1348         read(0, &ch, 1);
1349         return ch;
1350     }
1351     if (is_pipe) {
1352         /* When running under a GUI, you will end here. */
1353         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1354             return -1;
1355         //Read it
1356         if(nchars != 0) {
1357             read(0, &ch, 1);
1358             return ch;
1359         }else{
1360             return -1;
1361         }
1362     }
1363 #    endif
1364     if(kbhit())
1365         return(getch());
1366 #endif
1367     return -1;
1368 }
1369
1370 static int decode_interrupt_cb(void *ctx)
1371 {
1372     return received_nb_signals > 1;
1373 }
1374
1375 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1376
1377 void av_noreturn exit_program(int ret)
1378 {
1379     int i, j;
1380
1381     for (i = 0; i < nb_filtergraphs; i++) {
1382         avfilter_graph_free(&filtergraphs[i]->graph);
1383         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1384             av_freep(&filtergraphs[i]->inputs[j]);
1385         av_freep(&filtergraphs[i]->inputs);
1386         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1387             av_freep(&filtergraphs[i]->outputs[j]);
1388         av_freep(&filtergraphs[i]->outputs);
1389         av_freep(&filtergraphs[i]);
1390     }
1391     av_freep(&filtergraphs);
1392
1393     /* close files */
1394     for (i = 0; i < nb_output_files; i++) {
1395         AVFormatContext *s = output_files[i]->ctx;
1396         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1397             avio_close(s->pb);
1398         avformat_free_context(s);
1399         av_dict_free(&output_files[i]->opts);
1400         av_freep(&output_files[i]);
1401     }
1402     for (i = 0; i < nb_output_streams; i++) {
1403         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1404         while (bsfc) {
1405             AVBitStreamFilterContext *next = bsfc->next;
1406             av_bitstream_filter_close(bsfc);
1407             bsfc = next;
1408         }
1409         output_streams[i]->bitstream_filters = NULL;
1410
1411         av_freep(&output_streams[i]->filtered_frame);
1412         av_freep(&output_streams[i]);
1413     }
1414     for (i = 0; i < nb_input_files; i++) {
1415         avformat_close_input(&input_files[i]->ctx);
1416         av_freep(&input_files[i]);
1417     }
1418     for (i = 0; i < nb_input_streams; i++) {
1419         av_freep(&input_streams[i]->decoded_frame);
1420         av_dict_free(&input_streams[i]->opts);
1421         free_buffer_pool(input_streams[i]);
1422         av_freep(&input_streams[i]->filters);
1423         av_freep(&input_streams[i]);
1424     }
1425
1426     if (vstats_file)
1427         fclose(vstats_file);
1428     av_free(vstats_filename);
1429
1430     av_freep(&input_streams);
1431     av_freep(&input_files);
1432     av_freep(&output_streams);
1433     av_freep(&output_files);
1434
1435     uninit_opts();
1436
1437     avfilter_uninit();
1438     avformat_network_deinit();
1439
1440     if (received_sigterm) {
1441         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1442                (int) received_sigterm);
1443         exit (255);
1444     }
1445
1446     exit(ret); /* not all OS-es handle main() return value */
1447 }
1448
1449 static void assert_avoptions(AVDictionary *m)
1450 {
1451     AVDictionaryEntry *t;
1452     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1453         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1454         exit_program(1);
1455     }
1456 }
1457
1458 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1459 {
1460     const char *codec_string = encoder ? "encoder" : "decoder";
1461     AVCodec *codec;
1462     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1463         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1464         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1465                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1466                 codec_string, c->codec->name);
1467         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1468         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1469             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1470                    codec_string, codec->name);
1471         exit_program(1);
1472     }
1473 }
1474
1475 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1476 {
1477     if (codec && codec->sample_fmts) {
1478         const enum AVSampleFormat *p = codec->sample_fmts;
1479         for (; *p != -1; p++) {
1480             if (*p == st->codec->sample_fmt)
1481                 break;
1482         }
1483         if (*p == -1) {
1484             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1485                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1486             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1487             av_log(NULL, AV_LOG_WARNING,
1488                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1489                    av_get_sample_fmt_name(st->codec->sample_fmt),
1490                    codec->name,
1491                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1492             st->codec->sample_fmt = codec->sample_fmts[0];
1493         }
1494     }
1495 }
1496
1497 static double
1498 get_sync_ipts(const OutputStream *ost, int64_t pts)
1499 {
1500     OutputFile *of = output_files[ost->file_index];
1501     return (double)(pts - of->start_time) / AV_TIME_BASE;
1502 }
1503
1504 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1505 {
1506     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1507     AVCodecContext          *avctx = ost->st->codec;
1508     int ret;
1509
1510     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1511         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1512         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1513
1514     /*
1515      * Audio encoders may split the packets --  #frames in != #packets out.
1516      * But there is no reordering, so we can limit the number of output packets
1517      * by simply dropping them here.
1518      * Counting encoded video frames needs to be done separately because of
1519      * reordering, see do_video_out()
1520      */
1521     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1522         if (ost->frame_number >= ost->max_frames) {
1523             av_free_packet(pkt);
1524             return;
1525         }
1526         ost->frame_number++;
1527     }
1528
1529     while (bsfc) {
1530         AVPacket new_pkt = *pkt;
1531         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1532                                            &new_pkt.data, &new_pkt.size,
1533                                            pkt->data, pkt->size,
1534                                            pkt->flags & AV_PKT_FLAG_KEY);
1535         if (a > 0) {
1536             av_free_packet(pkt);
1537             new_pkt.destruct = av_destruct_packet;
1538         } else if (a < 0) {
1539             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1540                    bsfc->filter->name, pkt->stream_index,
1541                    avctx->codec ? avctx->codec->name : "copy");
1542             print_error("", a);
1543             if (exit_on_error)
1544                 exit_program(1);
1545         }
1546         *pkt = new_pkt;
1547
1548         bsfc = bsfc->next;
1549     }
1550
1551     pkt->stream_index = ost->index;
1552     ret = av_interleaved_write_frame(s, pkt);
1553     if (ret < 0) {
1554         print_error("av_interleaved_write_frame()", ret);
1555         exit_program(1);
1556     }
1557 }
1558
1559 // static int check_recording_time(OutputStream *ost)
1560 // {
1561 //     OutputFile *of = output_files[ost->file_index];
1562 //
1563 //     if (of->recording_time != INT64_MAX &&
1564 //         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1565 //                       AV_TIME_BASE_Q) >= 0) {
1566 //         ost->is_past_recording_time = 1;
1567 //         return 0;
1568 //     }
1569 //     return 1;
1570 // }
1571
1572 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1573                          AVFrame *frame)
1574 {
1575     AVCodecContext *enc = ost->st->codec;
1576     AVPacket pkt;
1577     int got_packet = 0;
1578
1579     av_init_packet(&pkt);
1580     pkt.data = NULL;
1581     pkt.size = 0;
1582 #if 0
1583     if (!check_recording_time(ost))
1584         return;
1585 #endif
1586     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1587         frame->pts = ost->sync_opts;
1588     ost->sync_opts = frame->pts + frame->nb_samples;
1589
1590     av_assert0(pkt.size || !pkt.data);
1591     update_benchmark(NULL);
1592     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1593         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1594         exit_program(1);
1595     }
1596     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1597
1598     if (got_packet) {
1599         if (pkt.pts != AV_NOPTS_VALUE)
1600             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1601         if (pkt.dts != AV_NOPTS_VALUE) {
1602             int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1603             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1604             if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt.dts) {
1605                 av_log(s, max - pkt.dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt.dts, max);
1606                 pkt.pts = pkt.dts = max;
1607             }
1608         }
1609         if (pkt.duration > 0)
1610             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1611
1612         if (debug_ts) {
1613             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1614                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1615                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1616                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1617         }
1618
1619         write_frame(s, &pkt, ost);
1620
1621         audio_size += pkt.size;
1622         av_free_packet(&pkt);
1623     }
1624 }
1625
1626 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1627 {
1628     AVCodecContext *dec;
1629     AVPicture *picture2;
1630     AVPicture picture_tmp;
1631     uint8_t *buf = 0;
1632
1633     dec = ist->st->codec;
1634
1635     /* deinterlace : must be done before any resize */
1636     if (do_deinterlace) {
1637         int size;
1638
1639         /* create temporary picture */
1640         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1641         buf  = av_malloc(size);
1642         if (!buf)
1643             return;
1644
1645         picture2 = &picture_tmp;
1646         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1647
1648         if (avpicture_deinterlace(picture2, picture,
1649                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1650             /* if error, do not deinterlace */
1651             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1652             av_free(buf);
1653             buf = NULL;
1654             picture2 = picture;
1655         }
1656     } else {
1657         picture2 = picture;
1658     }
1659
1660     if (picture != picture2)
1661         *picture = *picture2;
1662     *bufp = buf;
1663 }
1664
1665 static void do_subtitle_out(AVFormatContext *s,
1666                             OutputStream *ost,
1667                             InputStream *ist,
1668                             AVSubtitle *sub,
1669                             int64_t pts)
1670 {
1671     static uint8_t *subtitle_out = NULL;
1672     int subtitle_out_max_size = 1024 * 1024;
1673     int subtitle_out_size, nb, i;
1674     AVCodecContext *enc;
1675     AVPacket pkt;
1676
1677     if (pts == AV_NOPTS_VALUE) {
1678         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1679         if (exit_on_error)
1680             exit_program(1);
1681         return;
1682     }
1683
1684     enc = ost->st->codec;
1685
1686     if (!subtitle_out) {
1687         subtitle_out = av_malloc(subtitle_out_max_size);
1688     }
1689
1690     /* Note: DVB subtitle need one packet to draw them and one other
1691        packet to clear them */
1692     /* XXX: signal it in the codec context ? */
1693     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1694         nb = 2;
1695     else
1696         nb = 1;
1697
1698     for (i = 0; i < nb; i++) {
1699         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1700
1701         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1702         // start_display_time is required to be 0
1703         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1704         sub->end_display_time  -= sub->start_display_time;
1705         sub->start_display_time = 0;
1706         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1707                                                     subtitle_out_max_size, sub);
1708         if (subtitle_out_size < 0) {
1709             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1710             exit_program(1);
1711         }
1712
1713         av_init_packet(&pkt);
1714         pkt.data = subtitle_out;
1715         pkt.size = subtitle_out_size;
1716         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1717         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1718             /* XXX: the pts correction is handled here. Maybe handling
1719                it in the codec would be better */
1720             if (i == 0)
1721                 pkt.pts += 90 * sub->start_display_time;
1722             else
1723                 pkt.pts += 90 * sub->end_display_time;
1724         }
1725         write_frame(s, &pkt, ost);
1726     }
1727 }
1728
1729 static double psnr(double d)
1730 {
1731     return -10.0 * log(d) / log(10.0);
1732 }
1733
1734 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1735                            int frame_size)
1736 {
1737     AVCodecContext *enc;
1738     int frame_number;
1739     double ti1, bitrate, avg_bitrate;
1740
1741     /* this is executed just the first time do_video_stats is called */
1742     if (!vstats_file) {
1743         vstats_file = fopen(vstats_filename, "w");
1744         if (!vstats_file) {
1745             perror("fopen");
1746             exit_program(1);
1747         }
1748     }
1749
1750     enc = ost->st->codec;
1751     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1752         frame_number = ost->frame_number;
1753         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1754         if (enc->flags&CODEC_FLAG_PSNR)
1755             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1756
1757         fprintf(vstats_file,"f_size= %6d ", frame_size);
1758         /* compute pts value */
1759         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1760         if (ti1 < 0.01)
1761             ti1 = 0.01;
1762
1763         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1764         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1765         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1766                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1767         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1768     }
1769 }
1770
1771
1772 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1773                          AVFrame *in_picture, float quality)
1774 {
1775     int nb_frames, i, ret, format_video_sync;
1776     AVCodecContext *enc;
1777     double sync_ipts, delta;
1778     double duration = 0;
1779     int frame_size = 0;
1780     InputStream *ist = NULL;
1781
1782     if (ost->source_index >= 0)
1783         ist = input_streams[ost->source_index];
1784
1785     enc = ost->st->codec;
1786
1787     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1788         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1789
1790     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1791     delta = sync_ipts - ost->sync_opts + duration;
1792
1793     /* by default, we output a single frame */
1794     nb_frames = 1;
1795
1796     format_video_sync = video_sync_method;
1797     if (format_video_sync == VSYNC_AUTO)
1798         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1799
1800     switch (format_video_sync) {
1801     case VSYNC_CFR:
1802         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1803         if (delta < -1.1)
1804             nb_frames = 0;
1805         else if (delta > 1.1)
1806             nb_frames = lrintf(delta);
1807         break;
1808     case VSYNC_VFR:
1809         if (delta <= -0.6)
1810             nb_frames = 0;
1811         else if (delta > 0.6)
1812             ost->sync_opts = lrint(sync_ipts);
1813         break;
1814     case VSYNC_DROP:
1815     case VSYNC_PASSTHROUGH:
1816         ost->sync_opts = lrint(sync_ipts);
1817         break;
1818     default:
1819         av_assert0(0);
1820     }
1821
1822     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1823     if (nb_frames == 0) {
1824         nb_frames_drop++;
1825         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1826         return;
1827     } else if (nb_frames > 1) {
1828         nb_frames_dup += nb_frames - 1;
1829         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1830     }
1831
1832     /* duplicates frame if needed */
1833     for (i = 0; i < nb_frames; i++) {
1834         AVPacket pkt;
1835         av_init_packet(&pkt);
1836         pkt.data = NULL;
1837         pkt.size = 0;
1838
1839         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1840             enc->codec->id == CODEC_ID_RAWVIDEO) {
1841             /* raw pictures are written as AVPicture structure to
1842                avoid any copies. We support temporarily the older
1843                method. */
1844             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1845             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1846             pkt.data   = (uint8_t *)in_picture;
1847             pkt.size   =  sizeof(AVPicture);
1848             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1849             pkt.flags |= AV_PKT_FLAG_KEY;
1850
1851             write_frame(s, &pkt, ost);
1852         } else {
1853             int got_packet;
1854             AVFrame big_picture;
1855
1856             big_picture = *in_picture;
1857             /* better than nothing: use input picture interlaced
1858                settings */
1859             big_picture.interlaced_frame = in_picture->interlaced_frame;
1860             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1861                 if (ost->top_field_first == -1)
1862                     big_picture.top_field_first = in_picture->top_field_first;
1863                 else
1864                     big_picture.top_field_first = !!ost->top_field_first;
1865             }
1866
1867             /* handles same_quant here. This is not correct because it may
1868                not be a global option */
1869             big_picture.quality = quality;
1870             if (!enc->me_threshold)
1871                 big_picture.pict_type = 0;
1872             big_picture.pts = ost->sync_opts;
1873             if (ost->forced_kf_index < ost->forced_kf_count &&
1874                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1875                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1876                 ost->forced_kf_index++;
1877             }
1878             update_benchmark(NULL);
1879             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1880             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1881             if (ret < 0) {
1882                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1883                 exit_program(1);
1884             }
1885
1886             if (got_packet) {
1887                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1888                     pkt.pts = ost->sync_opts;
1889
1890                 if (pkt.pts != AV_NOPTS_VALUE)
1891                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1892                 if (pkt.dts != AV_NOPTS_VALUE)
1893                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1894
1895                 if (debug_ts) {
1896                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1897                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1898                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1899                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1900                 }
1901
1902                 write_frame(s, &pkt, ost);
1903                 frame_size = pkt.size;
1904                 video_size += pkt.size;
1905                 av_free_packet(&pkt);
1906
1907                 /* if two pass, output log */
1908                 if (ost->logfile && enc->stats_out) {
1909                     fprintf(ost->logfile, "%s", enc->stats_out);
1910                 }
1911             }
1912         }
1913         ost->sync_opts++;
1914         /*
1915          * For video, number of frames in == number of packets out.
1916          * But there may be reordering, so we can't throw away frames on encoder
1917          * flush, we need to limit them here, before they go into encoder.
1918          */
1919         ost->frame_number++;
1920     }
1921     if (vstats_filename && frame_size)
1922         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1923 }
1924
1925 /* check for new output on any of the filtergraphs */
1926 static int poll_filters(void)
1927 {
1928     AVFilterBufferRef *picref;
1929     AVFrame *filtered_frame = NULL;
1930     int i, ret, ret_all;
1931     unsigned nb_success, nb_eof;
1932     int64_t frame_pts;
1933
1934     while (1) {
1935         /* Reap all buffers present in the buffer sinks */
1936         for (i = 0; i < nb_output_streams; i++) {
1937             OutputStream *ost = output_streams[i];
1938             OutputFile    *of = output_files[ost->file_index];
1939             int ret = 0;
1940
1941             if (!ost->filter || ost->is_past_recording_time)
1942                 continue;
1943
1944             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1945                 return AVERROR(ENOMEM);
1946             } else
1947                 avcodec_get_frame_defaults(ost->filtered_frame);
1948             filtered_frame = ost->filtered_frame;
1949
1950             while (1) {
1951                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
1952                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1953                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1954                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1955                                                     ost->st->codec->frame_size);
1956                 else
1957 #ifdef SINKA
1958                     ret = av_buffersink_read(ost->filter->filter, &picref);
1959 #else
1960                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1961                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1962 #endif
1963                 if (ret < 0) {
1964                     if (ret != AVERROR(EAGAIN)) {
1965                         char buf[256];
1966                         av_strerror(ret, buf, sizeof(buf));
1967                         av_log(NULL, AV_LOG_WARNING,
1968                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1969                     }
1970                     break;
1971                 }
1972                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
1973                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1974                 else if (picref->pts != AV_NOPTS_VALUE)
1975                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1976                                                     ost->filter->filter->inputs[0]->time_base,
1977                                                     ost->st->codec->time_base) -
1978                                         av_rescale_q(of->start_time,
1979                                                     AV_TIME_BASE_Q,
1980                                                     ost->st->codec->time_base);
1981                 //if (ost->source_index >= 0)
1982                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1983
1984                 if (of->start_time && filtered_frame->pts < of->start_time)
1985                     return 0;
1986
1987                 switch (ost->filter->filter->inputs[0]->type) {
1988                 case AVMEDIA_TYPE_VIDEO:
1989                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1990                     filtered_frame->pts = frame_pts;
1991                     if (!ost->frame_aspect_ratio)
1992                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1993
1994                     do_video_out(of->ctx, ost, filtered_frame,
1995                                  same_quant ? ost->last_quality :
1996                                               ost->st->codec->global_quality);
1997                     break;
1998                 case AVMEDIA_TYPE_AUDIO:
1999                     avfilter_copy_buf_props(filtered_frame, picref);
2000                     filtered_frame->pts = frame_pts;
2001                     do_audio_out(of->ctx, ost, filtered_frame);
2002                     break;
2003                 default:
2004                     // TODO support subtitle filters
2005                     av_assert0(0);
2006                 }
2007
2008                 avfilter_unref_buffer(picref);
2009             }
2010         }
2011         /* Request frames through all the graphs */
2012         ret_all = nb_success = nb_eof = 0;
2013         for (i = 0; i < nb_filtergraphs; i++) {
2014             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2015             if (!ret) {
2016                 nb_success++;
2017             } else if (ret == AVERROR_EOF) {
2018                 nb_eof++;
2019             } else if (ret != AVERROR(EAGAIN)) {
2020                 char buf[256];
2021                 av_strerror(ret, buf, sizeof(buf));
2022                 av_log(NULL, AV_LOG_WARNING,
2023                        "Error in request_frame(): %s\n", buf);
2024                 ret_all = ret;
2025             }
2026         }
2027         if (!nb_success)
2028             break;
2029         /* Try again if anything succeeded */
2030     }
2031     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2032 }
2033
2034 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2035 {
2036     char buf[1024];
2037     OutputStream *ost;
2038     AVFormatContext *oc;
2039     int64_t total_size;
2040     AVCodecContext *enc;
2041     int frame_number, vid, i;
2042     double bitrate;
2043     int64_t pts = INT64_MAX;
2044     static int64_t last_time = -1;
2045     static int qp_histogram[52];
2046     int hours, mins, secs, us;
2047
2048     if (!print_stats && !is_last_report)
2049         return;
2050
2051     if (!is_last_report) {
2052         if (last_time == -1) {
2053             last_time = cur_time;
2054             return;
2055         }
2056         if ((cur_time - last_time) < 500000)
2057             return;
2058         last_time = cur_time;
2059     }
2060
2061
2062     oc = output_files[0]->ctx;
2063
2064     total_size = avio_size(oc->pb);
2065     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2066         total_size = avio_tell(oc->pb);
2067         if (total_size < 0)
2068             total_size = 0;
2069     }
2070
2071     buf[0] = '\0';
2072     vid = 0;
2073     for (i = 0; i < nb_output_streams; i++) {
2074         float q = -1;
2075         ost = output_streams[i];
2076         enc = ost->st->codec;
2077         if (!ost->stream_copy && enc->coded_frame)
2078             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2079         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2080             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2081         }
2082         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2083             float fps, t = (cur_time-timer_start) / 1000000.0;
2084
2085             frame_number = ost->frame_number;
2086             fps = t > 1 ? frame_number / t : 0;
2087             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2088                      frame_number, fps < 9.95, fps, q);
2089             if (is_last_report)
2090                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2091             if (qp_hist) {
2092                 int j;
2093                 int qp = lrintf(q);
2094                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2095                     qp_histogram[qp]++;
2096                 for (j = 0; j < 32; j++)
2097                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2098             }
2099             if (enc->flags&CODEC_FLAG_PSNR) {
2100                 int j;
2101                 double error, error_sum = 0;
2102                 double scale, scale_sum = 0;
2103                 char type[3] = { 'Y','U','V' };
2104                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2105                 for (j = 0; j < 3; j++) {
2106                     if (is_last_report) {
2107                         error = enc->error[j];
2108                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2109                     } else {
2110                         error = enc->coded_frame->error[j];
2111                         scale = enc->width * enc->height * 255.0 * 255.0;
2112                     }
2113                     if (j)
2114                         scale /= 4;
2115                     error_sum += error;
2116                     scale_sum += scale;
2117                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2118                 }
2119                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2120             }
2121             vid = 1;
2122         }
2123         /* compute min output value */
2124         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2125                                       ost->st->time_base, AV_TIME_BASE_Q));
2126     }
2127
2128     secs = pts / AV_TIME_BASE;
2129     us = pts % AV_TIME_BASE;
2130     mins = secs / 60;
2131     secs %= 60;
2132     hours = mins / 60;
2133     mins %= 60;
2134
2135     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2136
2137     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2138              "size=%8.0fkB time=", total_size / 1024.0);
2139     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2140              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2141              (100 * us) / AV_TIME_BASE);
2142     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2143              "bitrate=%6.1fkbits/s", bitrate);
2144
2145     if (nb_frames_dup || nb_frames_drop)
2146         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2147                 nb_frames_dup, nb_frames_drop);
2148
2149     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2150
2151     fflush(stderr);
2152
2153     if (is_last_report) {
2154         int64_t raw= audio_size + video_size + extra_size;
2155         av_log(NULL, AV_LOG_INFO, "\n");
2156         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2157                video_size / 1024.0,
2158                audio_size / 1024.0,
2159                extra_size / 1024.0,
2160                100.0 * (total_size - raw) / raw
2161         );
2162         if(video_size + audio_size + extra_size == 0){
2163             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2164         }
2165     }
2166 }
2167
2168 static void flush_encoders(void)
2169 {
2170     int i, ret;
2171
2172     for (i = 0; i < nb_output_streams; i++) {
2173         OutputStream   *ost = output_streams[i];
2174         AVCodecContext *enc = ost->st->codec;
2175         AVFormatContext *os = output_files[ost->file_index]->ctx;
2176         int stop_encoding = 0;
2177
2178         if (!ost->encoding_needed)
2179             continue;
2180
2181         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2182             continue;
2183         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2184             continue;
2185
2186         for (;;) {
2187             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2188             const char *desc;
2189             int64_t *size;
2190
2191             switch (ost->st->codec->codec_type) {
2192             case AVMEDIA_TYPE_AUDIO:
2193                 encode = avcodec_encode_audio2;
2194                 desc   = "Audio";
2195                 size   = &audio_size;
2196                 break;
2197             case AVMEDIA_TYPE_VIDEO:
2198                 encode = avcodec_encode_video2;
2199                 desc   = "Video";
2200                 size   = &video_size;
2201                 break;
2202             default:
2203                 stop_encoding = 1;
2204             }
2205
2206             if (encode) {
2207                 AVPacket pkt;
2208                 int got_packet;
2209                 av_init_packet(&pkt);
2210                 pkt.data = NULL;
2211                 pkt.size = 0;
2212
2213                 update_benchmark(NULL);
2214                 ret = encode(enc, &pkt, NULL, &got_packet);
2215                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2216                 if (ret < 0) {
2217                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2218                     exit_program(1);
2219                 }
2220                 *size += pkt.size;
2221                 if (ost->logfile && enc->stats_out) {
2222                     fprintf(ost->logfile, "%s", enc->stats_out);
2223                 }
2224                 if (!got_packet) {
2225                     stop_encoding = 1;
2226                     break;
2227                 }
2228                 if (pkt.pts != AV_NOPTS_VALUE)
2229                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2230                 if (pkt.dts != AV_NOPTS_VALUE)
2231                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2232                 write_frame(os, &pkt, ost);
2233             }
2234
2235             if (stop_encoding)
2236                 break;
2237         }
2238     }
2239 }
2240
2241 /*
2242  * Check whether a packet from ist should be written into ost at this time
2243  */
2244 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2245 {
2246     OutputFile *of = output_files[ost->file_index];
2247     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2248
2249     if (ost->source_index != ist_index)
2250         return 0;
2251
2252     if (of->start_time && ist->pts < of->start_time)
2253         return 0;
2254
2255     if (of->recording_time != INT64_MAX &&
2256         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2257                       (AVRational){ 1, 1000000 }) >= 0) {
2258         ost->is_past_recording_time = 1;
2259         return 0;
2260     }
2261
2262     return 1;
2263 }
2264
2265 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2266 {
2267     OutputFile *of = output_files[ost->file_index];
2268     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2269     AVPicture pict;
2270     AVPacket opkt;
2271
2272     av_init_packet(&opkt);
2273
2274     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2275         !ost->copy_initial_nonkeyframes)
2276         return;
2277
2278     /* force the input stream PTS */
2279     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2280         audio_size += pkt->size;
2281     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2282         video_size += pkt->size;
2283         ost->sync_opts++;
2284     }
2285
2286     if (pkt->pts != AV_NOPTS_VALUE)
2287         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2288     else
2289         opkt.pts = AV_NOPTS_VALUE;
2290
2291     if (pkt->dts == AV_NOPTS_VALUE)
2292         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2293     else
2294         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2295     opkt.dts -= ost_tb_start_time;
2296
2297     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2298     opkt.flags    = pkt->flags;
2299
2300     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2301     if (  ost->st->codec->codec_id != CODEC_ID_H264
2302        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2303        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2304        && ost->st->codec->codec_id != CODEC_ID_VC1
2305        ) {
2306         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2307             opkt.destruct = av_destruct_packet;
2308     } else {
2309         opkt.data = pkt->data;
2310         opkt.size = pkt->size;
2311     }
2312     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2313         /* store AVPicture in AVPacket, as expected by the output format */
2314         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2315         opkt.data = (uint8_t *)&pict;
2316         opkt.size = sizeof(AVPicture);
2317         opkt.flags |= AV_PKT_FLAG_KEY;
2318     }
2319
2320     write_frame(of->ctx, &opkt, ost);
2321     ost->st->codec->frame_number++;
2322     av_free_packet(&opkt);
2323 }
2324
2325 static void rate_emu_sleep(InputStream *ist)
2326 {
2327     if (input_files[ist->file_index]->rate_emu) {
2328         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2329         int64_t now = av_gettime() - ist->start;
2330         if (pts > now)
2331             usleep(pts - now);
2332     }
2333 }
2334
2335 static int guess_input_channel_layout(InputStream *ist)
2336 {
2337     AVCodecContext *dec = ist->st->codec;
2338
2339     if (!dec->channel_layout) {
2340         char layout_name[256];
2341
2342         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2343         if (!dec->channel_layout)
2344             return 0;
2345         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2346                                      dec->channels, dec->channel_layout);
2347         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2348                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2349     }
2350     return 1;
2351 }
2352
2353 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2354 {
2355     AVFrame *decoded_frame;
2356     AVCodecContext *avctx = ist->st->codec;
2357     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
2358     int i, ret, resample_changed;
2359
2360     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2361         return AVERROR(ENOMEM);
2362     else
2363         avcodec_get_frame_defaults(ist->decoded_frame);
2364     decoded_frame = ist->decoded_frame;
2365
2366     update_benchmark(NULL);
2367     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2368     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2369     if (ret < 0) {
2370         return ret;
2371     }
2372     if (avctx->sample_rate <= 0) {
2373         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2374         return AVERROR_INVALIDDATA;
2375     }
2376
2377     if (!*got_output) {
2378         /* no audio frame */
2379         if (!pkt->size)
2380             for (i = 0; i < ist->nb_filters; i++)
2381 #ifdef SRCA
2382                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2383 #else
2384                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2385 #endif
2386         return ret;
2387     }
2388
2389     /* if the decoder provides a pts, use it instead of the last packet pts.
2390        the decoder could be delaying output by a packet or more. */
2391     if (decoded_frame->pts != AV_NOPTS_VALUE)
2392         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2393     else if (pkt->pts != AV_NOPTS_VALUE) {
2394         decoded_frame->pts = pkt->pts;
2395         pkt->pts           = AV_NOPTS_VALUE;
2396     }else
2397         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2398
2399
2400 #if 1
2401     /* increment next_dts to use for the case where the input stream does not
2402        have timestamps or there are multiple frames in the packet */
2403     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2404                      avctx->sample_rate;
2405     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2406                      avctx->sample_rate;
2407 #endif
2408
2409     // preprocess audio (volume)
2410     if (audio_volume != 256) {
2411         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
2412         void *samples = decoded_frame->data[0];
2413         switch (avctx->sample_fmt) {
2414         case AV_SAMPLE_FMT_U8:
2415         {
2416             uint8_t *volp = samples;
2417             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2418                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
2419                 *volp++ = av_clip_uint8(v);
2420             }
2421             break;
2422         }
2423         case AV_SAMPLE_FMT_S16:
2424         {
2425             int16_t *volp = samples;
2426             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2427                 int v = ((*volp) * audio_volume + 128) >> 8;
2428                 *volp++ = av_clip_int16(v);
2429             }
2430             break;
2431         }
2432         case AV_SAMPLE_FMT_S32:
2433         {
2434             int32_t *volp = samples;
2435             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2436                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2437                 *volp++ = av_clipl_int32(v);
2438             }
2439             break;
2440         }
2441         case AV_SAMPLE_FMT_FLT:
2442         {
2443             float *volp = samples;
2444             float scale = audio_volume / 256.f;
2445             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2446                 *volp++ *= scale;
2447             }
2448             break;
2449         }
2450         case AV_SAMPLE_FMT_DBL:
2451         {
2452             double *volp = samples;
2453             double scale = audio_volume / 256.;
2454             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2455                 *volp++ *= scale;
2456             }
2457             break;
2458         }
2459         default:
2460             av_log(NULL, AV_LOG_FATAL,
2461                    "Audio volume adjustment on sample format %s is not supported.\n",
2462                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2463             exit_program(1);
2464         }
2465     }
2466
2467     rate_emu_sleep(ist);
2468
2469     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2470                        ist->resample_channels       != avctx->channels               ||
2471                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2472                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2473     if (resample_changed) {
2474         char layout1[64], layout2[64];
2475
2476         if (!guess_input_channel_layout(ist)) {
2477             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2478                    "layout for Input Stream #%d.%d\n", ist->file_index,
2479                    ist->st->index);
2480             exit_program(1);
2481         }
2482         decoded_frame->channel_layout = avctx->channel_layout;
2483
2484         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2485                                      ist->resample_channel_layout);
2486         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2487                                      decoded_frame->channel_layout);
2488
2489         av_log(NULL, AV_LOG_INFO,
2490                "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",
2491                ist->file_index, ist->st->index,
2492                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2493                ist->resample_channels, layout1,
2494                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2495                avctx->channels, layout2);
2496
2497         ist->resample_sample_fmt     = decoded_frame->format;
2498         ist->resample_sample_rate    = decoded_frame->sample_rate;
2499         ist->resample_channel_layout = decoded_frame->channel_layout;
2500         ist->resample_channels       = avctx->channels;
2501
2502         for (i = 0; i < nb_filtergraphs; i++)
2503             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2504                 configure_filtergraph(filtergraphs[i]) < 0) {
2505                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2506                 exit_program(1);
2507             }
2508     }
2509
2510     for (i = 0; i < ist->nb_filters; i++) {
2511 #ifdef SRCA
2512         av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
2513 #else
2514         AVFilterBufferRef *fb= avfilter_get_audio_buffer_ref_from_frame(decoded_frame, AV_PERM_WRITE);
2515         av_buffersrc_add_ref(ist->filters[i]->filter, fb, 0*AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT);
2516 #endif
2517     }
2518
2519     return ret;
2520 }
2521
2522 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2523 {
2524     AVFrame *decoded_frame;
2525     void *buffer_to_free = NULL;
2526     int i, ret = 0, resample_changed;
2527     int64_t best_effort_timestamp;
2528     AVRational *frame_sample_aspect;
2529     float quality;
2530
2531     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2532         return AVERROR(ENOMEM);
2533     else
2534         avcodec_get_frame_defaults(ist->decoded_frame);
2535     decoded_frame = ist->decoded_frame;
2536     pkt->pts  = *pkt_pts;
2537     pkt->dts  = ist->dts;
2538     *pkt_pts  = AV_NOPTS_VALUE;
2539
2540     update_benchmark(NULL);
2541     ret = avcodec_decode_video2(ist->st->codec,
2542                                 decoded_frame, got_output, pkt);
2543     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2544     if (ret < 0)
2545         return ret;
2546
2547     quality = same_quant ? decoded_frame->quality : 0;
2548     if (!*got_output) {
2549         /* no picture yet */
2550         if (!pkt->size)
2551             for (i = 0; i < ist->nb_filters; i++)
2552 #ifdef SRCA
2553                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2554 #else
2555                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2556 #endif
2557         return ret;
2558     }
2559
2560     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2561     if(best_effort_timestamp != AV_NOPTS_VALUE)
2562         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2563
2564     pkt->size = 0;
2565
2566     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2567
2568     rate_emu_sleep(ist);
2569
2570     if (ist->st->sample_aspect_ratio.num)
2571         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2572
2573     resample_changed = ist->resample_width   != decoded_frame->width  ||
2574                        ist->resample_height  != decoded_frame->height ||
2575                        ist->resample_pix_fmt != decoded_frame->format;
2576     if (resample_changed) {
2577         av_log(NULL, AV_LOG_INFO,
2578                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2579                ist->file_index, ist->st->index,
2580                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2581                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2582
2583         ist->resample_width   = decoded_frame->width;
2584         ist->resample_height  = decoded_frame->height;
2585         ist->resample_pix_fmt = decoded_frame->format;
2586
2587         for (i = 0; i < nb_filtergraphs; i++)
2588             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2589                 configure_filtergraph(filtergraphs[i]) < 0) {
2590                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2591                 exit_program(1);
2592             }
2593     }
2594
2595     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2596     for (i = 0; i < ist->nb_filters; i++) {
2597         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2598                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2599                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2600         // XXX what an ugly hack
2601         if (ist->filters[i]->graph->nb_outputs == 1)
2602             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2603
2604         if (!frame_sample_aspect->num)
2605             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2606         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2607             FrameBuffer      *buf = decoded_frame->opaque;
2608             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2609                                         decoded_frame->data, decoded_frame->linesize,
2610                                         AV_PERM_READ | AV_PERM_PRESERVE,
2611                                         ist->st->codec->width, ist->st->codec->height,
2612                                         ist->st->codec->pix_fmt);
2613
2614             avfilter_copy_frame_props(fb, decoded_frame);
2615             fb->buf->priv           = buf;
2616             fb->buf->free           = filter_release_buffer;
2617
2618             av_assert0(buf->refcount>0);
2619             buf->refcount++;
2620 #ifdef SRCA
2621             av_buffersrc_buffer(ist->filters[i]->filter, fb);
2622         } else
2623         if(av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame)<0) {
2624 #else
2625             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2626                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2627                                  AV_BUFFERSRC_FLAG_NO_COPY);
2628         } else
2629         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2630 #endif
2631             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2632             exit_program(1);
2633         }
2634
2635     }
2636
2637     av_free(buffer_to_free);
2638     return ret;
2639 }
2640
2641 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2642 {
2643     AVSubtitle subtitle;
2644     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2645                                           &subtitle, got_output, pkt);
2646     if (ret < 0)
2647         return ret;
2648     if (!*got_output)
2649         return ret;
2650
2651     rate_emu_sleep(ist);
2652
2653     for (i = 0; i < nb_output_streams; i++) {
2654         OutputStream *ost = output_streams[i];
2655
2656         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2657             continue;
2658
2659         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2660     }
2661
2662     avsubtitle_free(&subtitle);
2663     return ret;
2664 }
2665
2666 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2667 static int output_packet(InputStream *ist, const AVPacket *pkt)
2668 {
2669     int ret = 0, i;
2670     int got_output;
2671     int64_t pkt_pts = AV_NOPTS_VALUE;
2672
2673     AVPacket avpkt;
2674     if (!ist->saw_first_ts) {
2675         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;
2676         ist->pts = 0;
2677         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2678             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2679             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2680         }
2681         ist->saw_first_ts = 1;
2682     }
2683
2684     if (ist->next_dts == AV_NOPTS_VALUE)
2685         ist->next_dts = ist->dts;
2686     if (ist->next_pts == AV_NOPTS_VALUE)
2687         ist->next_pts = ist->pts;
2688
2689     if (pkt == NULL) {
2690         /* EOF handling */
2691         av_init_packet(&avpkt);
2692         avpkt.data = NULL;
2693         avpkt.size = 0;
2694         goto handle_eof;
2695     } else {
2696         avpkt = *pkt;
2697     }
2698
2699     if (pkt->dts != AV_NOPTS_VALUE) {
2700         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2701         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2702             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2703     }
2704     if(pkt->pts != AV_NOPTS_VALUE)
2705         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2706
2707     // while we have more to decode or while the decoder did output something on EOF
2708     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2709         int duration;
2710     handle_eof:
2711
2712         ist->pts = ist->next_pts;
2713         ist->dts = ist->next_dts;
2714
2715         if (avpkt.size && avpkt.size != pkt->size) {
2716             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2717                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2718             ist->showed_multi_packet_warning = 1;
2719         }
2720
2721         switch (ist->st->codec->codec_type) {
2722         case AVMEDIA_TYPE_AUDIO:
2723             ret = transcode_audio    (ist, &avpkt, &got_output);
2724             break;
2725         case AVMEDIA_TYPE_VIDEO:
2726             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2727             if (avpkt.duration) {
2728                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2729             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2730                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2731                 duration = ((int64_t)AV_TIME_BASE *
2732                                 ist->st->codec->time_base.num * ticks) /
2733                                 ist->st->codec->time_base.den;
2734             } else
2735                 duration = 0;
2736
2737             if(ist->dts != AV_NOPTS_VALUE && duration) {
2738                 ist->next_dts += duration;
2739             }else
2740                 ist->next_dts = AV_NOPTS_VALUE;
2741
2742             if (got_output)
2743                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2744             break;
2745         case AVMEDIA_TYPE_SUBTITLE:
2746             ret = transcode_subtitles(ist, &avpkt, &got_output);
2747             break;
2748         default:
2749             return -1;
2750         }
2751
2752         if (ret < 0)
2753             return ret;
2754
2755         avpkt.dts=
2756         avpkt.pts= AV_NOPTS_VALUE;
2757
2758         // touch data and size only if not EOF
2759         if (pkt) {
2760             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2761                 ret = avpkt.size;
2762             avpkt.data += ret;
2763             avpkt.size -= ret;
2764         }
2765         if (!got_output) {
2766             continue;
2767         }
2768     }
2769
2770     /* handle stream copy */
2771     if (!ist->decoding_needed) {
2772         rate_emu_sleep(ist);
2773         ist->dts = ist->next_dts;
2774         switch (ist->st->codec->codec_type) {
2775         case AVMEDIA_TYPE_AUDIO:
2776             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2777                              ist->st->codec->sample_rate;
2778             break;
2779         case AVMEDIA_TYPE_VIDEO:
2780             if (pkt->duration) {
2781                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2782             } else if(ist->st->codec->time_base.num != 0) {
2783                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2784                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2785                                   ist->st->codec->time_base.num * ticks) /
2786                                   ist->st->codec->time_base.den;
2787             }
2788             break;
2789         }
2790         ist->pts = ist->dts;
2791         ist->next_pts = ist->next_dts;
2792     }
2793     for (i = 0; pkt && i < nb_output_streams; i++) {
2794         OutputStream *ost = output_streams[i];
2795
2796         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2797             continue;
2798
2799         do_streamcopy(ist, ost, pkt);
2800     }
2801
2802     return 0;
2803 }
2804
2805 static void print_sdp(void)
2806 {
2807     char sdp[2048];
2808     int i;
2809     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2810
2811     if (!avc)
2812         exit_program(1);
2813     for (i = 0; i < nb_output_files; i++)
2814         avc[i] = output_files[i]->ctx;
2815
2816     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2817     printf("SDP:\n%s\n", sdp);
2818     fflush(stdout);
2819     av_freep(&avc);
2820 }
2821
2822 static int init_input_stream(int ist_index, char *error, int error_len)
2823 {
2824     int i;
2825     InputStream *ist = input_streams[ist_index];
2826
2827     if (ist->decoding_needed) {
2828         AVCodec *codec = ist->dec;
2829         if (!codec) {
2830             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2831                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2832             return AVERROR(EINVAL);
2833         }
2834
2835         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2836         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2837             ist->st->codec->get_buffer     = codec_get_buffer;
2838             ist->st->codec->release_buffer = codec_release_buffer;
2839             ist->st->codec->opaque         = ist;
2840         }
2841
2842         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2843             av_dict_set(&ist->opts, "threads", "auto", 0);
2844         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2845             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2846                     ist->file_index, ist->st->index);
2847             return AVERROR(EINVAL);
2848         }
2849         assert_codec_experimental(ist->st->codec, 0);
2850         assert_avoptions(ist->opts);
2851     }
2852
2853     ist->next_pts = AV_NOPTS_VALUE;
2854     ist->next_dts = AV_NOPTS_VALUE;
2855     ist->is_start = 1;
2856
2857     return 0;
2858 }
2859
2860 static InputStream *get_input_stream(OutputStream *ost)
2861 {
2862     if (ost->source_index >= 0)
2863         return input_streams[ost->source_index];
2864
2865     if (ost->filter) {
2866         FilterGraph *fg = ost->filter->graph;
2867         int i;
2868
2869         for (i = 0; i < fg->nb_inputs; i++)
2870             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2871                 return fg->inputs[i]->ist;
2872     }
2873
2874     return NULL;
2875 }
2876
2877 static int transcode_init(void)
2878 {
2879     int ret = 0, i, j, k;
2880     AVFormatContext *oc;
2881     AVCodecContext *codec, *icodec;
2882     OutputStream *ost;
2883     InputStream *ist;
2884     char error[1024];
2885     int want_sdp = 1;
2886
2887     /* init framerate emulation */
2888     for (i = 0; i < nb_input_files; i++) {
2889         InputFile *ifile = input_files[i];
2890         if (ifile->rate_emu)
2891             for (j = 0; j < ifile->nb_streams; j++)
2892                 input_streams[j + ifile->ist_index]->start = av_gettime();
2893     }
2894
2895     /* output stream init */
2896     for (i = 0; i < nb_output_files; i++) {
2897         oc = output_files[i]->ctx;
2898         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2899             av_dump_format(oc, i, oc->filename, 1);
2900             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2901             return AVERROR(EINVAL);
2902         }
2903     }
2904
2905     /* init complex filtergraphs */
2906     for (i = 0; i < nb_filtergraphs; i++)
2907         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2908             return ret;
2909
2910     /* for each output stream, we compute the right encoding parameters */
2911     for (i = 0; i < nb_output_streams; i++) {
2912         ost = output_streams[i];
2913         oc  = output_files[ost->file_index]->ctx;
2914         ist = get_input_stream(ost);
2915
2916         if (ost->attachment_filename)
2917             continue;
2918
2919         codec  = ost->st->codec;
2920
2921         if (ist) {
2922             icodec = ist->st->codec;
2923
2924             ost->st->disposition          = ist->st->disposition;
2925             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2926             codec->chroma_sample_location = icodec->chroma_sample_location;
2927         }
2928
2929         if (ost->stream_copy) {
2930             uint64_t extra_size;
2931
2932             av_assert0(ist && !ost->filter);
2933
2934             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2935
2936             if (extra_size > INT_MAX) {
2937                 return AVERROR(EINVAL);
2938             }
2939
2940             /* if stream_copy is selected, no need to decode or encode */
2941             codec->codec_id   = icodec->codec_id;
2942             codec->codec_type = icodec->codec_type;
2943
2944             if (!codec->codec_tag) {
2945                 if (!oc->oformat->codec_tag ||
2946                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2947                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2948                     codec->codec_tag = icodec->codec_tag;
2949             }
2950
2951             codec->bit_rate       = icodec->bit_rate;
2952             codec->rc_max_rate    = icodec->rc_max_rate;
2953             codec->rc_buffer_size = icodec->rc_buffer_size;
2954             codec->field_order    = icodec->field_order;
2955             codec->extradata      = av_mallocz(extra_size);
2956             if (!codec->extradata) {
2957                 return AVERROR(ENOMEM);
2958             }
2959             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2960             codec->extradata_size= icodec->extradata_size;
2961             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2962
2963             codec->time_base = ist->st->time_base;
2964             /*
2965              * Avi is a special case here because it supports variable fps but
2966              * having the fps and timebase differe significantly adds quite some
2967              * overhead
2968              */
2969             if(!strcmp(oc->oformat->name, "avi")) {
2970                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2971                                  && av_q2d(ist->st->time_base) < 1.0/500
2972                     || copy_tb==0){
2973                     codec->time_base = icodec->time_base;
2974                     codec->time_base.num *= icodec->ticks_per_frame;
2975                     codec->time_base.den *= 2;
2976                     codec->ticks_per_frame = 2;
2977                 }
2978             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2979                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2980                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2981             ) {
2982                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2983                                 && av_q2d(ist->st->time_base) < 1.0/500
2984                    || copy_tb==0){
2985                     codec->time_base = icodec->time_base;
2986                     codec->time_base.num *= icodec->ticks_per_frame;
2987                 }
2988             }
2989             av_reduce(&codec->time_base.num, &codec->time_base.den,
2990                         codec->time_base.num, codec->time_base.den, INT_MAX);
2991
2992             switch (codec->codec_type) {
2993             case AVMEDIA_TYPE_AUDIO:
2994                 if (audio_volume != 256) {
2995                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2996                     exit_program(1);
2997                 }
2998                 codec->channel_layout     = icodec->channel_layout;
2999                 codec->sample_rate        = icodec->sample_rate;
3000                 codec->channels           = icodec->channels;
3001                 codec->frame_size         = icodec->frame_size;
3002                 codec->audio_service_type = icodec->audio_service_type;
3003                 codec->block_align        = icodec->block_align;
3004                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
3005                     codec->block_align= 0;
3006                 if(codec->codec_id == CODEC_ID_AC3)
3007                     codec->block_align= 0;
3008                 break;
3009             case AVMEDIA_TYPE_VIDEO:
3010                 codec->pix_fmt            = icodec->pix_fmt;
3011                 codec->width              = icodec->width;
3012                 codec->height             = icodec->height;
3013                 codec->has_b_frames       = icodec->has_b_frames;
3014                 if (!codec->sample_aspect_ratio.num) {
3015                     codec->sample_aspect_ratio   =
3016                     ost->st->sample_aspect_ratio =
3017                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3018                         ist->st->codec->sample_aspect_ratio.num ?
3019                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3020                 }
3021                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3022                 break;
3023             case AVMEDIA_TYPE_SUBTITLE:
3024                 codec->width  = icodec->width;
3025                 codec->height = icodec->height;
3026                 break;
3027             case AVMEDIA_TYPE_DATA:
3028             case AVMEDIA_TYPE_ATTACHMENT:
3029                 break;
3030             default:
3031                 abort();
3032             }
3033         } else {
3034             if (!ost->enc)
3035                 ost->enc = avcodec_find_encoder(codec->codec_id);
3036             if (!ost->enc) {
3037                 /* should only happen when a default codec is not present. */
3038                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3039                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3040                 ret = AVERROR(EINVAL);
3041                 goto dump_format;
3042             }
3043
3044             if (ist)
3045                 ist->decoding_needed = 1;
3046             ost->encoding_needed = 1;
3047
3048             if (!ost->filter &&
3049                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3050                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3051                     FilterGraph *fg;
3052                     fg = init_simple_filtergraph(ist, ost);
3053                     if (configure_simple_filtergraph(fg)) {
3054                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3055                         exit(1);
3056                     }
3057             }
3058
3059             switch (codec->codec_type) {
3060             case AVMEDIA_TYPE_AUDIO:
3061                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3062                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3063                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3064                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3065                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3066                 break;
3067             case AVMEDIA_TYPE_VIDEO:
3068                 if (ist && !ost->frame_rate.num)
3069                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3070                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3071                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3072                     ost->frame_rate = ost->enc->supported_framerates[idx];
3073                 }
3074                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3075                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3076                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3077                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3078                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3079                 }
3080                 for (j = 0; j < ost->forced_kf_count; j++)
3081                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3082                                                          AV_TIME_BASE_Q,
3083                                                          codec->time_base);
3084
3085                 codec->width  = ost->filter->filter->inputs[0]->w;
3086                 codec->height = ost->filter->filter->inputs[0]->h;
3087                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3088                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3089                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3090                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3091                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3092
3093                 if (codec->width   != icodec->width  ||
3094                     codec->height  != icodec->height ||
3095                     codec->pix_fmt != icodec->pix_fmt) {
3096                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3097                 }
3098
3099                 break;
3100             case AVMEDIA_TYPE_SUBTITLE:
3101                 codec->time_base = (AVRational){1, 1000};
3102                 break;
3103             default:
3104                 abort();
3105                 break;
3106             }
3107             /* two pass mode */
3108             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3109                 char logfilename[1024];
3110                 FILE *f;
3111
3112                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3113                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3114                          i);
3115                 if (!strcmp(ost->enc->name, "libx264")) {
3116                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3117                 } else {
3118                     if (codec->flags & CODEC_FLAG_PASS2) {
3119                         char  *logbuffer;
3120                         size_t logbuffer_size;
3121                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3122                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3123                                 logfilename);
3124                             exit_program(1);
3125                         }
3126                         codec->stats_in = logbuffer;
3127                     }
3128                     if (codec->flags & CODEC_FLAG_PASS1) {
3129                         f = fopen(logfilename, "wb");
3130                         if (!f) {
3131                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3132                                 logfilename, strerror(errno));
3133                             exit_program(1);
3134                         }
3135                         ost->logfile = f;
3136                     }
3137                 }
3138             }
3139         }
3140     }
3141
3142     /* open each encoder */
3143     for (i = 0; i < nb_output_streams; i++) {
3144         ost = output_streams[i];
3145         if (ost->encoding_needed) {
3146             AVCodec      *codec = ost->enc;
3147             AVCodecContext *dec = NULL;
3148
3149             if ((ist = get_input_stream(ost)))
3150                 dec = ist->st->codec;
3151             if (dec && dec->subtitle_header) {
3152                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3153                 if (!ost->st->codec->subtitle_header) {
3154                     ret = AVERROR(ENOMEM);
3155                     goto dump_format;
3156                 }
3157                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3158                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3159             }
3160             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3161                 av_dict_set(&ost->opts, "threads", "auto", 0);
3162             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3163                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3164                         ost->file_index, ost->index);
3165                 ret = AVERROR(EINVAL);
3166                 goto dump_format;
3167             }
3168             assert_codec_experimental(ost->st->codec, 1);
3169             assert_avoptions(ost->opts);
3170             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3171                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3172                                              " It takes bits/s as argument, not kbits/s\n");
3173             extra_size += ost->st->codec->extradata_size;
3174
3175             if (ost->st->codec->me_threshold)
3176                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3177         }
3178     }
3179
3180     /* init input streams */
3181     for (i = 0; i < nb_input_streams; i++)
3182         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3183             goto dump_format;
3184
3185     /* discard unused programs */
3186     for (i = 0; i < nb_input_files; i++) {
3187         InputFile *ifile = input_files[i];
3188         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3189             AVProgram *p = ifile->ctx->programs[j];
3190             int discard  = AVDISCARD_ALL;
3191
3192             for (k = 0; k < p->nb_stream_indexes; k++)
3193                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3194                     discard = AVDISCARD_DEFAULT;
3195                     break;
3196                 }
3197             p->discard = discard;
3198         }
3199     }
3200
3201     /* open files and write file headers */
3202     for (i = 0; i < nb_output_files; i++) {
3203         oc = output_files[i]->ctx;
3204         oc->interrupt_callback = int_cb;
3205         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3206             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3207             ret = AVERROR(EINVAL);
3208             goto dump_format;
3209         }
3210 //         assert_avoptions(output_files[i]->opts);
3211         if (strcmp(oc->oformat->name, "rtp")) {
3212             want_sdp = 0;
3213         }
3214     }
3215
3216  dump_format:
3217     /* dump the file output parameters - cannot be done before in case
3218        of stream copy */
3219     for (i = 0; i < nb_output_files; i++) {
3220         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3221     }
3222
3223     /* dump the stream mapping */
3224     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3225     for (i = 0; i < nb_input_streams; i++) {
3226         ist = input_streams[i];
3227
3228         for (j = 0; j < ist->nb_filters; j++) {
3229             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3230             if (ist->filters[j]->graph->graph_desc) {
3231                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3232                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3233                        link->dst->filter->name);
3234                 if (link->dst->input_count > 1)
3235                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3236                 if (nb_filtergraphs > 1)
3237                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3238                 av_log(NULL, AV_LOG_INFO, "\n");
3239             }
3240         }
3241     }
3242
3243     for (i = 0; i < nb_output_streams; i++) {
3244         ost = output_streams[i];
3245
3246         if (ost->attachment_filename) {
3247             /* an attached file */
3248             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3249                    ost->attachment_filename, ost->file_index, ost->index);
3250             continue;
3251         }
3252
3253         if (ost->filter && ost->filter->graph->graph_desc) {
3254             /* output from a complex graph */
3255             AVFilterLink *link = ost->filter->filter->inputs[0];
3256             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3257             if (link->src->output_count > 1)
3258                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3259             if (nb_filtergraphs > 1)
3260                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3261
3262             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3263                    ost->index, ost->enc ? ost->enc->name : "?");
3264             continue;
3265         }
3266
3267         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3268                input_streams[ost->source_index]->file_index,
3269                input_streams[ost->source_index]->st->index,
3270                ost->file_index,
3271                ost->index);
3272         if (ost->sync_ist != input_streams[ost->source_index])
3273             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3274                    ost->sync_ist->file_index,
3275                    ost->sync_ist->st->index);
3276         if (ost->stream_copy)
3277             av_log(NULL, AV_LOG_INFO, " (copy)");
3278         else
3279             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3280                    input_streams[ost->source_index]->dec->name : "?",
3281                    ost->enc ? ost->enc->name : "?");
3282         av_log(NULL, AV_LOG_INFO, "\n");
3283     }
3284
3285     if (ret) {
3286         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3287         return ret;
3288     }
3289
3290     if (want_sdp) {
3291         print_sdp();
3292     }
3293
3294     return 0;
3295 }
3296
3297 /*
3298  * The following code is the main loop of the file converter
3299  */
3300 static int transcode(void)
3301 {
3302     int ret, i;
3303     AVFormatContext *is, *os;
3304     OutputStream *ost;
3305     InputStream *ist;
3306     uint8_t *no_packet;
3307     int no_packet_count = 0;
3308     int64_t timer_start;
3309     int key;
3310
3311     if (!(no_packet = av_mallocz(nb_input_files)))
3312         exit_program(1);
3313
3314     ret = transcode_init();
3315     if (ret < 0)
3316         goto fail;
3317
3318     if (!using_stdin) {
3319         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3320     }
3321
3322     timer_start = av_gettime();
3323
3324     for (; received_sigterm == 0;) {
3325         int file_index, ist_index, past_recording_time = 1;
3326         AVPacket pkt;
3327         int64_t ipts_min;
3328         int64_t cur_time= av_gettime();
3329
3330         ipts_min = INT64_MAX;
3331         /* if 'q' pressed, exits */
3332         if (!using_stdin) {
3333             static int64_t last_time;
3334             if (received_nb_signals)
3335                 break;
3336             /* read_key() returns 0 on EOF */
3337             if(cur_time - last_time >= 100000 && !run_as_daemon){
3338                 key =  read_key();
3339                 last_time = cur_time;
3340             }else
3341                 key = -1;
3342             if (key == 'q')
3343                 break;
3344             if (key == '+') av_log_set_level(av_log_get_level()+10);
3345             if (key == '-') av_log_set_level(av_log_get_level()-10);
3346             if (key == 's') qp_hist     ^= 1;
3347             if (key == 'h'){
3348                 if (do_hex_dump){
3349                     do_hex_dump = do_pkt_dump = 0;
3350                 } else if(do_pkt_dump){
3351                     do_hex_dump = 1;
3352                 } else
3353                     do_pkt_dump = 1;
3354                 av_log_set_level(AV_LOG_DEBUG);
3355             }
3356             if (key == 'c' || key == 'C'){
3357                 char buf[4096], target[64], command[256], arg[256] = {0};
3358                 double time;
3359                 int k, n = 0;
3360                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3361                 i = 0;
3362                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3363                     if (k > 0)
3364                         buf[i++] = k;
3365                 buf[i] = 0;
3366                 if (k > 0 &&
3367                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3368                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3369                            target, time, command, arg);
3370                     for (i = 0; i < nb_filtergraphs; i++) {
3371                         FilterGraph *fg = filtergraphs[i];
3372                         if (fg->graph) {
3373                             if (time < 0) {
3374                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3375                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3376                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3377                             } else {
3378                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3379                             }
3380                         }
3381                     }
3382                 } else {
3383                     av_log(NULL, AV_LOG_ERROR,
3384                            "Parse error, at least 3 arguments were expected, "
3385                            "only %d given in string '%s'\n", n, buf);
3386                 }
3387             }
3388             if (key == 'd' || key == 'D'){
3389                 int debug=0;
3390                 if(key == 'D') {
3391                     debug = input_streams[0]->st->codec->debug<<1;
3392                     if(!debug) debug = 1;
3393                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3394                         debug += debug;
3395                 }else
3396                     if(scanf("%d", &debug)!=1)
3397                         fprintf(stderr,"error parsing debug value\n");
3398                 for(i=0;i<nb_input_streams;i++) {
3399                     input_streams[i]->st->codec->debug = debug;
3400                 }
3401                 for(i=0;i<nb_output_streams;i++) {
3402                     ost = output_streams[i];
3403                     ost->st->codec->debug = debug;
3404                 }
3405                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3406                 fprintf(stderr,"debug=%d\n", debug);
3407             }
3408             if (key == '?'){
3409                 fprintf(stderr, "key    function\n"
3410                                 "?      show this help\n"
3411                                 "+      increase verbosity\n"
3412                                 "-      decrease verbosity\n"
3413                                 "c      Send command to filtergraph\n"
3414                                 "D      cycle through available debug modes\n"
3415                                 "h      dump packets/hex press to cycle through the 3 states\n"
3416                                 "q      quit\n"
3417                                 "s      Show QP histogram\n"
3418                 );
3419             }
3420         }
3421
3422         /* check if there's any stream where output is still needed */
3423         for (i = 0; i < nb_output_streams; i++) {
3424             OutputFile *of;
3425             ost = output_streams[i];
3426             of  = output_files[ost->file_index];
3427             os  = output_files[ost->file_index]->ctx;
3428             if (ost->is_past_recording_time ||
3429                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3430                 continue;
3431             if (ost->frame_number >= ost->max_frames) {
3432                 int j;
3433                 for (j = 0; j < of->ctx->nb_streams; j++)
3434                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3435                 continue;
3436             }
3437             past_recording_time = 0;
3438         }
3439         if (past_recording_time)
3440             break;
3441
3442         /* select the stream that we must read now by looking at the
3443            smallest output pts */
3444         file_index = -1;
3445         for (i = 0; i < nb_input_streams; i++) {
3446             int64_t ipts;
3447             ist = input_streams[i];
3448             ipts = ist->pts;
3449             if (ist->discard || no_packet[ist->file_index])
3450                 continue;
3451             if (!input_files[ist->file_index]->eof_reached) {
3452                 if (ipts < ipts_min) {
3453                     ipts_min = ipts;
3454                     file_index = ist->file_index;
3455                 }
3456             }
3457         }
3458         /* if none, if is finished */
3459         if (file_index < 0) {
3460             if (no_packet_count) {
3461                 no_packet_count = 0;
3462                 memset(no_packet, 0, nb_input_files);
3463                 usleep(10000);
3464                 continue;
3465             }
3466             break;
3467         }
3468
3469         /* read a frame from it and output it in the fifo */
3470         is  = input_files[file_index]->ctx;
3471         ret = av_read_frame(is, &pkt);
3472         if (ret == AVERROR(EAGAIN)) {
3473             no_packet[file_index] = 1;
3474             no_packet_count++;
3475             continue;
3476         }
3477         if (ret < 0) {
3478             input_files[file_index]->eof_reached = 1;
3479
3480             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3481                 ist = input_streams[input_files[file_index]->ist_index + i];
3482                 if (ist->decoding_needed)
3483                     output_packet(ist, NULL);
3484             }
3485
3486             if (opt_shortest)
3487                 break;
3488             else
3489                 continue;
3490         }
3491
3492         no_packet_count = 0;
3493         memset(no_packet, 0, nb_input_files);
3494
3495         if (do_pkt_dump) {
3496             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3497                              is->streams[pkt.stream_index]);
3498         }
3499         /* the following test is needed in case new streams appear
3500            dynamically in stream : we ignore them */
3501         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3502             goto discard_packet;
3503         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3504         ist = input_streams[ist_index];
3505         if (ist->discard)
3506             goto discard_packet;
3507
3508         if (pkt.dts != AV_NOPTS_VALUE)
3509             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3510         if (pkt.pts != AV_NOPTS_VALUE)
3511             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3512
3513         if (pkt.pts != AV_NOPTS_VALUE)
3514             pkt.pts *= ist->ts_scale;
3515         if (pkt.dts != AV_NOPTS_VALUE)
3516             pkt.dts *= ist->ts_scale;
3517
3518         if (debug_ts) {
3519             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3520                     "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",
3521                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3522                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3523                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3524                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3525                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3526                     input_files[ist->file_index]->ts_offset);
3527         }
3528
3529         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3530             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3531             int64_t delta   = pkt_dts - ist->next_dts;
3532             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3533             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3534                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3535                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3536                 pkt_dts+1<ist->pts){
3537                 input_files[ist->file_index]->ts_offset -= delta;
3538                 av_log(NULL, AV_LOG_DEBUG,
3539                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3540                        delta, input_files[ist->file_index]->ts_offset);
3541                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3542                 if (pkt.pts != AV_NOPTS_VALUE)
3543                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3544             }
3545             } else {
3546                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3547                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3548                      pkt_dts+1<ist->pts){
3549                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3550                     pkt.dts = AV_NOPTS_VALUE;
3551                 }
3552                 if (pkt.pts != AV_NOPTS_VALUE){
3553                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3554                     delta   = pkt_pts - ist->next_dts;
3555                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3556                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3557                         pkt_pts+1<ist->pts) {
3558                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3559                         pkt.pts = AV_NOPTS_VALUE;
3560                     }
3561                 }
3562             }
3563         }
3564
3565         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3566         if (output_packet(ist, &pkt) < 0 ||
3567             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3568             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3569                    ist->file_index, ist->st->index);
3570             if (exit_on_error)
3571                 exit_program(1);
3572             av_free_packet(&pkt);
3573             continue;
3574         }
3575
3576     discard_packet:
3577         av_free_packet(&pkt);
3578
3579         /* dump report by using the output first video and audio streams */
3580         print_report(0, timer_start, cur_time);
3581     }
3582
3583     /* at the end of stream, we must flush the decoder buffers */
3584     for (i = 0; i < nb_input_streams; i++) {
3585         ist = input_streams[i];
3586         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3587             output_packet(ist, NULL);
3588         }
3589     }
3590     poll_filters();
3591     flush_encoders();
3592
3593     term_exit();
3594
3595     /* write the trailer if needed and close file */
3596     for (i = 0; i < nb_output_files; i++) {
3597         os = output_files[i]->ctx;
3598         av_write_trailer(os);
3599     }
3600
3601     /* dump report by using the first video and audio streams */
3602     print_report(1, timer_start, av_gettime());
3603
3604     /* close each encoder */
3605     for (i = 0; i < nb_output_streams; i++) {
3606         ost = output_streams[i];
3607         if (ost->encoding_needed) {
3608             av_freep(&ost->st->codec->stats_in);
3609             avcodec_close(ost->st->codec);
3610         }
3611     }
3612
3613     /* close each decoder */
3614     for (i = 0; i < nb_input_streams; i++) {
3615         ist = input_streams[i];
3616         if (ist->decoding_needed) {
3617             avcodec_close(ist->st->codec);
3618         }
3619     }
3620
3621     /* finished ! */
3622     ret = 0;
3623
3624  fail:
3625     av_freep(&no_packet);
3626
3627     if (output_streams) {
3628         for (i = 0; i < nb_output_streams; i++) {
3629             ost = output_streams[i];
3630             if (ost) {
3631                 if (ost->stream_copy)
3632                     av_freep(&ost->st->codec->extradata);
3633                 if (ost->logfile) {
3634                     fclose(ost->logfile);
3635                     ost->logfile = NULL;
3636                 }
3637                 av_freep(&ost->st->codec->subtitle_header);
3638                 av_free(ost->forced_kf_pts);
3639                 av_dict_free(&ost->opts);
3640             }
3641         }
3642     }
3643     return ret;
3644 }
3645
3646 static int opt_frame_crop(const char *opt, const char *arg)
3647 {
3648     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3649     return AVERROR(EINVAL);
3650 }
3651
3652 static int opt_pad(const char *opt, const char *arg)
3653 {
3654     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3655     return -1;
3656 }
3657
3658 static int opt_video_channel(const char *opt, const char *arg)
3659 {
3660     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3661     return opt_default("channel", arg);
3662 }
3663
3664 static int opt_video_standard(const char *opt, const char *arg)
3665 {
3666     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3667     return opt_default("standard", arg);
3668 }
3669
3670 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3671 {
3672     audio_codec_name = arg;
3673     return parse_option(o, "codec:a", arg, options);
3674 }
3675
3676 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3677 {
3678     video_codec_name = arg;
3679     return parse_option(o, "codec:v", arg, options);
3680 }
3681
3682 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3683 {
3684     subtitle_codec_name = arg;
3685     return parse_option(o, "codec:s", arg, options);
3686 }
3687
3688 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3689 {
3690     return parse_option(o, "codec:d", arg, options);
3691 }
3692
3693 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3694 {
3695     StreamMap *m = NULL;
3696     int i, negative = 0, file_idx;
3697     int sync_file_idx = -1, sync_stream_idx = 0;
3698     char *p, *sync;
3699     char *map;
3700
3701     if (*arg == '-') {
3702         negative = 1;
3703         arg++;
3704     }
3705     map = av_strdup(arg);
3706
3707     /* parse sync stream first, just pick first matching stream */
3708     if (sync = strchr(map, ',')) {
3709         *sync = 0;
3710         sync_file_idx = strtol(sync + 1, &sync, 0);
3711         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3712             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3713             exit_program(1);
3714         }
3715         if (*sync)
3716             sync++;
3717         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3718             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3719                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3720                 sync_stream_idx = i;
3721                 break;
3722             }
3723         if (i == input_files[sync_file_idx]->nb_streams) {
3724             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3725                                        "match any streams.\n", arg);
3726             exit_program(1);
3727         }
3728     }
3729
3730
3731     if (map[0] == '[') {
3732         /* this mapping refers to lavfi output */
3733         const char *c = map + 1;
3734         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3735                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3736         m = &o->stream_maps[o->nb_stream_maps - 1];
3737         m->linklabel = av_get_token(&c, "]");
3738         if (!m->linklabel) {
3739             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3740             exit_program(1);
3741         }
3742     } else {
3743         file_idx = strtol(map, &p, 0);
3744         if (file_idx >= nb_input_files || file_idx < 0) {
3745             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3746             exit_program(1);
3747         }
3748         if (negative)
3749             /* disable some already defined maps */
3750             for (i = 0; i < o->nb_stream_maps; i++) {
3751                 m = &o->stream_maps[i];
3752                 if (file_idx == m->file_index &&
3753                     check_stream_specifier(input_files[m->file_index]->ctx,
3754                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3755                                            *p == ':' ? p + 1 : p) > 0)
3756                     m->disabled = 1;
3757             }
3758         else
3759             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3760                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3761                             *p == ':' ? p + 1 : p) <= 0)
3762                     continue;
3763                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3764                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3765                 m = &o->stream_maps[o->nb_stream_maps - 1];
3766
3767                 m->file_index   = file_idx;
3768                 m->stream_index = i;
3769
3770                 if (sync_file_idx >= 0) {
3771                     m->sync_file_index   = sync_file_idx;
3772                     m->sync_stream_index = sync_stream_idx;
3773                 } else {
3774                     m->sync_file_index   = file_idx;
3775                     m->sync_stream_index = i;
3776                 }
3777             }
3778     }
3779
3780     if (!m) {
3781         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3782         exit_program(1);
3783     }
3784
3785     av_freep(&map);
3786     return 0;
3787 }
3788
3789 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3790 {
3791     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3792                                 &o->nb_attachments, o->nb_attachments + 1);
3793     o->attachments[o->nb_attachments - 1] = arg;
3794     return 0;
3795 }
3796
3797 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3798 {
3799     int n;
3800     AVStream *st;
3801     AudioChannelMap *m;
3802
3803     o->audio_channel_maps =
3804         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3805                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3806     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3807
3808     /* muted channel syntax */
3809     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3810     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3811         m->file_idx = m->stream_idx = -1;
3812         if (n == 1)
3813             m->ofile_idx = m->ostream_idx = -1;
3814         return 0;
3815     }
3816
3817     /* normal syntax */
3818     n = sscanf(arg, "%d.%d.%d:%d.%d",
3819                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3820                &m->ofile_idx, &m->ostream_idx);
3821
3822     if (n != 3 && n != 5) {
3823         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3824                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3825         exit_program(1);
3826     }
3827
3828     if (n != 5) // only file.stream.channel specified
3829         m->ofile_idx = m->ostream_idx = -1;
3830
3831     /* check input */
3832     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3833         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3834                m->file_idx);
3835         exit_program(1);
3836     }
3837     if (m->stream_idx < 0 ||
3838         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3839         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3840                m->file_idx, m->stream_idx);
3841         exit_program(1);
3842     }
3843     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3844     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3845         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3846                m->file_idx, m->stream_idx);
3847         exit_program(1);
3848     }
3849     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3850         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3851                m->file_idx, m->stream_idx, m->channel_idx);
3852         exit_program(1);
3853     }
3854     return 0;
3855 }
3856
3857 /**
3858  * Parse a metadata specifier in arg.
3859  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3860  * @param index for type c/p, chapter/program index is written here
3861  * @param stream_spec for type s, the stream specifier is written here
3862  */
3863 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3864 {
3865     if (*arg) {
3866         *type = *arg;
3867         switch (*arg) {
3868         case 'g':
3869             break;
3870         case 's':
3871             if (*(++arg) && *arg != ':') {
3872                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3873                 exit_program(1);
3874             }
3875             *stream_spec = *arg == ':' ? arg + 1 : "";
3876             break;
3877         case 'c':
3878         case 'p':
3879             if (*(++arg) == ':')
3880                 *index = strtol(++arg, NULL, 0);
3881             break;
3882         default:
3883             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3884             exit_program(1);
3885         }
3886     } else
3887         *type = 'g';
3888 }
3889
3890 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3891 {
3892     AVDictionary **meta_in = NULL;
3893     AVDictionary **meta_out = NULL;
3894     int i, ret = 0;
3895     char type_in, type_out;
3896     const char *istream_spec = NULL, *ostream_spec = NULL;
3897     int idx_in = 0, idx_out = 0;
3898
3899     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3900     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3901
3902     if (!ic) {
3903         if (type_out == 'g' || !*outspec)
3904             o->metadata_global_manual = 1;
3905         if (type_out == 's' || !*outspec)
3906             o->metadata_streams_manual = 1;
3907         if (type_out == 'c' || !*outspec)
3908             o->metadata_chapters_manual = 1;
3909         return 0;
3910     }
3911
3912     if (type_in == 'g' || type_out == 'g')
3913         o->metadata_global_manual = 1;
3914     if (type_in == 's' || type_out == 's')
3915         o->metadata_streams_manual = 1;
3916     if (type_in == 'c' || type_out == 'c')
3917         o->metadata_chapters_manual = 1;
3918
3919 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3920     if ((index) < 0 || (index) >= (nb_elems)) {\
3921         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3922                 (desc), (index));\
3923         exit_program(1);\
3924     }
3925
3926 #define SET_DICT(type, meta, context, index)\
3927         switch (type) {\
3928         case 'g':\
3929             meta = &context->metadata;\
3930             break;\
3931         case 'c':\
3932             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3933             meta = &context->chapters[index]->metadata;\
3934             break;\
3935         case 'p':\
3936             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3937             meta = &context->programs[index]->metadata;\
3938             break;\
3939         }\
3940
3941     SET_DICT(type_in, meta_in, ic, idx_in);
3942     SET_DICT(type_out, meta_out, oc, idx_out);
3943
3944     /* for input streams choose first matching stream */
3945     if (type_in == 's') {
3946         for (i = 0; i < ic->nb_streams; i++) {
3947             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3948                 meta_in = &ic->streams[i]->metadata;
3949                 break;
3950             } else if (ret < 0)
3951                 exit_program(1);
3952         }
3953         if (!meta_in) {
3954             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3955             exit_program(1);
3956         }
3957     }
3958
3959     if (type_out == 's') {
3960         for (i = 0; i < oc->nb_streams; i++) {
3961             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3962                 meta_out = &oc->streams[i]->metadata;
3963                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3964             } else if (ret < 0)
3965                 exit_program(1);
3966         }
3967     } else
3968         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3969
3970     return 0;
3971 }
3972
3973 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3974 {
3975     char buf[128];
3976     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3977     struct tm time = *gmtime((time_t*)&recording_timestamp);
3978     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3979     parse_option(o, "metadata", buf, options);
3980
3981     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3982                                  "tag instead.\n", opt);
3983     return 0;
3984 }
3985
3986 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3987 {
3988     const char *codec_string = encoder ? "encoder" : "decoder";
3989     AVCodec *codec;
3990
3991     codec = encoder ?
3992         avcodec_find_encoder_by_name(name) :
3993         avcodec_find_decoder_by_name(name);
3994     if (!codec) {
3995         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3996         exit_program(1);
3997     }
3998     if (codec->type != type) {
3999         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4000         exit_program(1);
4001     }
4002     return codec;
4003 }
4004
4005 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4006 {
4007     char *codec_name = NULL;
4008
4009     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4010     if (codec_name) {
4011         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4012         st->codec->codec_id = codec->id;
4013         return codec;
4014     } else
4015         return avcodec_find_decoder(st->codec->codec_id);
4016 }
4017
4018 /**
4019  * Add all the streams from the given input file to the global
4020  * list of input streams.
4021  */
4022 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4023 {
4024     int i;
4025     char *next, *codec_tag = NULL;
4026
4027     for (i = 0; i < ic->nb_streams; i++) {
4028         AVStream *st = ic->streams[i];
4029         AVCodecContext *dec = st->codec;
4030         InputStream *ist = av_mallocz(sizeof(*ist));
4031
4032         if (!ist)
4033             exit_program(1);
4034
4035         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4036         input_streams[nb_input_streams - 1] = ist;
4037
4038         ist->st = st;
4039         ist->file_index = nb_input_files;
4040         ist->discard = 1;
4041         st->discard  = AVDISCARD_ALL;
4042         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4043
4044         ist->ts_scale = 1.0;
4045         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4046
4047         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4048         if (codec_tag) {
4049             uint32_t tag = strtol(codec_tag, &next, 0);
4050             if (*next)
4051                 tag = AV_RL32(codec_tag);
4052             st->codec->codec_tag = tag;
4053         }
4054
4055         ist->dec = choose_decoder(o, ic, st);
4056
4057         switch (dec->codec_type) {
4058         case AVMEDIA_TYPE_VIDEO:
4059             if(!ist->dec)
4060                 ist->dec = avcodec_find_decoder(dec->codec_id);
4061             if (dec->lowres) {
4062                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4063             }
4064
4065             ist->resample_height  = dec->height;
4066             ist->resample_width   = dec->width;
4067             ist->resample_pix_fmt = dec->pix_fmt;
4068
4069             break;
4070         case AVMEDIA_TYPE_AUDIO:
4071             guess_input_channel_layout(ist);
4072
4073             ist->resample_sample_fmt     = dec->sample_fmt;
4074             ist->resample_sample_rate    = dec->sample_rate;
4075             ist->resample_channels       = dec->channels;
4076             ist->resample_channel_layout = dec->channel_layout;
4077
4078             break;
4079         case AVMEDIA_TYPE_DATA:
4080         case AVMEDIA_TYPE_SUBTITLE:
4081             if(!ist->dec)
4082                 ist->dec = avcodec_find_decoder(dec->codec_id);
4083             break;
4084         case AVMEDIA_TYPE_ATTACHMENT:
4085         case AVMEDIA_TYPE_UNKNOWN:
4086             break;
4087         default:
4088             abort();
4089         }
4090     }
4091 }
4092
4093 static void assert_file_overwrite(const char *filename)
4094 {
4095     if ((!file_overwrite || no_file_overwrite) &&
4096         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4097          av_strstart(filename, "file:", NULL))) {
4098         if (avio_check(filename, 0) == 0) {
4099             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4100                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4101                 fflush(stderr);
4102                 term_exit();
4103                 signal(SIGINT, SIG_DFL);
4104                 if (!read_yesno()) {
4105                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4106                     exit_program(1);
4107                 }
4108                 term_init();
4109             }
4110             else {
4111                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4112                 exit_program(1);
4113             }
4114         }
4115     }
4116 }
4117
4118 static void dump_attachment(AVStream *st, const char *filename)
4119 {
4120     int ret;
4121     AVIOContext *out = NULL;
4122     AVDictionaryEntry *e;
4123
4124     if (!st->codec->extradata_size) {
4125         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4126                nb_input_files - 1, st->index);
4127         return;
4128     }
4129     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4130         filename = e->value;
4131     if (!*filename) {
4132         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4133                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4134         exit_program(1);
4135     }
4136
4137     assert_file_overwrite(filename);
4138
4139     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4140         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4141                filename);
4142         exit_program(1);
4143     }
4144
4145     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4146     avio_flush(out);
4147     avio_close(out);
4148 }
4149
4150 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4151 {
4152     AVFormatContext *ic;
4153     AVInputFormat *file_iformat = NULL;
4154     int err, i, ret;
4155     int64_t timestamp;
4156     uint8_t buf[128];
4157     AVDictionary **opts;
4158     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4159
4160     if (o->format) {
4161         if (!(file_iformat = av_find_input_format(o->format))) {
4162             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4163             exit_program(1);
4164         }
4165     }
4166
4167     if (!strcmp(filename, "-"))
4168         filename = "pipe:";
4169
4170     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4171                     !strcmp(filename, "/dev/stdin");
4172
4173     /* get default parameters from command line */
4174     ic = avformat_alloc_context();
4175     if (!ic) {
4176         print_error(filename, AVERROR(ENOMEM));
4177         exit_program(1);
4178     }
4179     if (o->nb_audio_sample_rate) {
4180         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4181         av_dict_set(&format_opts, "sample_rate", buf, 0);
4182     }
4183     if (o->nb_audio_channels) {
4184         /* because we set audio_channels based on both the "ac" and
4185          * "channel_layout" options, we need to check that the specified
4186          * demuxer actually has the "channels" option before setting it */
4187         if (file_iformat && file_iformat->priv_class &&
4188             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4189                         AV_OPT_SEARCH_FAKE_OBJ)) {
4190             snprintf(buf, sizeof(buf), "%d",
4191                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4192             av_dict_set(&format_opts, "channels", buf, 0);
4193         }
4194     }
4195     if (o->nb_frame_rates) {
4196         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4197     }
4198     if (o->nb_frame_sizes) {
4199         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4200     }
4201     if (o->nb_frame_pix_fmts)
4202         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4203
4204     ic->video_codec_id   = video_codec_name ?
4205         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4206     ic->audio_codec_id   = audio_codec_name ?
4207         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4208     ic->subtitle_codec_id= subtitle_codec_name ?
4209         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4210     ic->flags |= AVFMT_FLAG_NONBLOCK;
4211     ic->interrupt_callback = int_cb;
4212
4213     /* open the input file with generic avformat function */
4214     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4215     if (err < 0) {
4216         print_error(filename, err);
4217         exit_program(1);
4218     }
4219     assert_avoptions(format_opts);
4220
4221     /* apply forced codec ids */
4222     for (i = 0; i < ic->nb_streams; i++)
4223         choose_decoder(o, ic, ic->streams[i]);
4224
4225     /* Set AVCodecContext options for avformat_find_stream_info */
4226     opts = setup_find_stream_info_opts(ic, codec_opts);
4227     orig_nb_streams = ic->nb_streams;
4228
4229     /* If not enough info to get the stream parameters, we decode the
4230        first frames to get it. (used in mpeg case for example) */
4231     ret = avformat_find_stream_info(ic, opts);
4232     if (ret < 0) {
4233         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4234         avformat_close_input(&ic);
4235         exit_program(1);
4236     }
4237
4238     timestamp = o->start_time;
4239     /* add the stream start time */
4240     if (ic->start_time != AV_NOPTS_VALUE)
4241         timestamp += ic->start_time;
4242
4243     /* if seeking requested, we execute it */
4244     if (o->start_time != 0) {
4245         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
4246         if (ret < 0) {
4247             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
4248                    filename, (double)timestamp / AV_TIME_BASE);
4249         }
4250     }
4251
4252     /* update the current parameters so that they match the one of the input stream */
4253     add_input_streams(o, ic);
4254
4255     /* dump the file content */
4256     av_dump_format(ic, nb_input_files, filename, 0);
4257
4258     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
4259     if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
4260         exit_program(1);
4261
4262     input_files[nb_input_files - 1]->ctx        = ic;
4263     input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
4264     input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
4265     input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
4266     input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
4267
4268     for (i = 0; i < o->nb_dump_attachment; i++) {
4269         int j;
4270
4271         for (j = 0; j < ic->nb_streams; j++) {
4272             AVStream *st = ic->streams[j];
4273
4274             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
4275                 dump_attachment(st, o->dump_attachment[i].u.str);
4276         }
4277     }
4278
4279     for (i = 0; i < orig_nb_streams; i++)
4280         av_dict_free(&opts[i]);
4281     av_freep(&opts);
4282
4283     reset_options(o, 1);
4284     return 0;
4285 }
4286
4287 static void parse_forced_key_frames(char *kf, OutputStream *ost)
4288 {
4289     char *p;
4290     int n = 1, i;
4291
4292     for (p = kf; *p; p++)
4293         if (*p == ',')
4294             n++;
4295     ost->forced_kf_count = n;
4296     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
4297     if (!ost->forced_kf_pts) {
4298         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
4299         exit_program(1);
4300     }
4301     p = kf;
4302     for (i = 0; i < n; i++) {
4303        &n