ffmpeg: disable autoinsertion for -async on the output side of the filtergraph.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88 #include <time.h>
89
90 #include "cmdutils.h"
91
92 #include "libavutil/avassert.h"
93
94 #define VSYNC_AUTO       -1
95 #define VSYNC_PASSTHROUGH 0
96 #define VSYNC_CFR         1
97 #define VSYNC_VFR         2
98 #define VSYNC_DROP        0xff
99
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179     uint8_t            *name;
180 } InputFilter;
181
182 typedef struct OutputFilter {
183     AVFilterContext     *filter;
184     struct OutputStream *ost;
185     struct FilterGraph  *graph;
186     uint8_t             *name;
187
188     /* temporary storage until stream maps are processed */
189     AVFilterInOut       *out_tmp;
190 } OutputFilter;
191
192 typedef struct FilterGraph {
193     int            index;
194     const char    *graph_desc;
195
196     AVFilterGraph *graph;
197
198     InputFilter   **inputs;
199     int          nb_inputs;
200     OutputFilter **outputs;
201     int         nb_outputs;
202 } FilterGraph;
203
204 typedef struct FrameBuffer {
205     uint8_t *base[4];
206     uint8_t *data[4];
207     int  linesize[4];
208
209     int h, w;
210     enum PixelFormat pix_fmt;
211
212     int refcount;
213     struct InputStream *ist;
214     struct FrameBuffer *next;
215 } FrameBuffer;
216
217 typedef struct InputStream {
218     int file_index;
219     AVStream *st;
220     int discard;             /* true if stream data should be discarded */
221     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
222     AVCodec *dec;
223     AVFrame *decoded_frame;
224
225     int64_t       start;     /* time when read started */
226     /* predicted dts of the next packet read for this stream or (when there are
227      * several frames in a packet) of the next frame in current packet */
228     int64_t       next_dts;
229     /* dts of the last packet read for this stream */
230     int64_t       dts;
231
232     int64_t       next_pts;  /* synthetic pts for the next decode frame */
233     int64_t       pts;       /* current pts of the decoded frame */
234     double ts_scale;
235     int is_start;            /* is 1 at the start and after a discontinuity */
236     int saw_first_ts;
237     int showed_multi_packet_warning;
238     AVDictionary *opts;
239     AVRational framerate;               /* framerate forced with -r */
240
241     int resample_height;
242     int resample_width;
243     int resample_pix_fmt;
244
245     int      resample_sample_fmt;
246     int      resample_sample_rate;
247     int      resample_channels;
248     uint64_t resample_channel_layout;
249
250     /* a pool of free buffers for decoded data */
251     FrameBuffer *buffer_pool;
252     int dr1;
253
254     /* decoded data from this stream goes into all those filters
255      * currently video and audio only */
256     InputFilter **filters;
257     int        nb_filters;
258 } InputStream;
259
260 typedef struct InputFile {
261     AVFormatContext *ctx;
262     int eof_reached;      /* true if eof reached */
263     int ist_index;        /* index of first stream in input_streams */
264     int buffer_size;      /* current total buffer size */
265     int64_t ts_offset;
266     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
267                              from ctx.nb_streams if new streams appear during av_read_frame() */
268     int rate_emu;
269 } InputFile;
270
271 typedef struct OutputStream {
272     int file_index;          /* file index */
273     int index;               /* stream index in the output file */
274     int source_index;        /* InputStream index */
275     AVStream *st;            /* stream in the output file */
276     int encoding_needed;     /* true if encoding needed for this stream */
277     int frame_number;
278     /* input pts and corresponding output pts
279        for A/V sync */
280     struct InputStream *sync_ist; /* input stream to sync against */
281     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
282     /* pts of the first frame encoded for this stream, used for limiting
283      * recording time */
284     int64_t first_pts;
285     AVBitStreamFilterContext *bitstream_filters;
286     AVCodec *enc;
287     int64_t max_frames;
288     AVFrame *filtered_frame;
289
290     /* video only */
291     AVRational frame_rate;
292     int force_fps;
293     int top_field_first;
294
295     float frame_aspect_ratio;
296     float last_quality;
297
298     /* forced key frames */
299     int64_t *forced_kf_pts;
300     int forced_kf_count;
301     int forced_kf_index;
302
303     /* audio only */
304     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
305     int audio_channels_mapped;           /* number of channels in audio_channels_map */
306
307     FILE *logfile;
308
309     OutputFilter *filter;
310     char *avfilter;
311
312     int64_t sws_flags;
313     int64_t swr_dither_method;
314     double swr_dither_scale;
315     AVDictionary *opts;
316     int is_past_recording_time;
317     int stream_copy;
318     const char *attachment_filename;
319     int copy_initial_nonkeyframes;
320
321     int keep_pix_fmt;
322 } OutputStream;
323
324
325 #if HAVE_TERMIOS_H
326
327 /* init terminal so that we can grab keys */
328 static struct termios oldtty;
329 static int restore_tty;
330 #endif
331
332 typedef struct OutputFile {
333     AVFormatContext *ctx;
334     AVDictionary *opts;
335     int ost_index;       /* index of the first stream in output_streams */
336     int64_t recording_time; /* desired length of the resulting file in microseconds */
337     int64_t start_time;     /* start time in microseconds */
338     uint64_t limit_filesize; /* filesize limit expressed in bytes */
339 } OutputFile;
340
341 static InputStream **input_streams = NULL;
342 static int        nb_input_streams = 0;
343 static InputFile   **input_files   = NULL;
344 static int        nb_input_files   = 0;
345
346 static OutputStream **output_streams = NULL;
347 static int         nb_output_streams = 0;
348 static OutputFile   **output_files   = NULL;
349 static int         nb_output_files   = 0;
350
351 static FilterGraph **filtergraphs;
352 int               nb_filtergraphs;
353
354 typedef struct OptionsContext {
355     /* input/output options */
356     int64_t start_time;
357     const char *format;
358
359     SpecifierOpt *codec_names;
360     int        nb_codec_names;
361     SpecifierOpt *audio_channels;
362     int        nb_audio_channels;
363     SpecifierOpt *audio_sample_rate;
364     int        nb_audio_sample_rate;
365     SpecifierOpt *frame_rates;
366     int        nb_frame_rates;
367     SpecifierOpt *frame_sizes;
368     int        nb_frame_sizes;
369     SpecifierOpt *frame_pix_fmts;
370     int        nb_frame_pix_fmts;
371
372     /* input options */
373     int64_t input_ts_offset;
374     int rate_emu;
375
376     SpecifierOpt *ts_scale;
377     int        nb_ts_scale;
378     SpecifierOpt *dump_attachment;
379     int        nb_dump_attachment;
380
381     /* output options */
382     StreamMap *stream_maps;
383     int     nb_stream_maps;
384     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
385     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
386     int metadata_global_manual;
387     int metadata_streams_manual;
388     int metadata_chapters_manual;
389     const char **attachments;
390     int       nb_attachments;
391
392     int chapters_input_file;
393
394     int64_t recording_time;
395     uint64_t limit_filesize;
396     float mux_preload;
397     float mux_max_delay;
398
399     int video_disable;
400     int audio_disable;
401     int subtitle_disable;
402     int data_disable;
403
404     /* indexed by output file stream index */
405     int   *streamid_map;
406     int nb_streamid_map;
407
408     SpecifierOpt *metadata;
409     int        nb_metadata;
410     SpecifierOpt *max_frames;
411     int        nb_max_frames;
412     SpecifierOpt *bitstream_filters;
413     int        nb_bitstream_filters;
414     SpecifierOpt *codec_tags;
415     int        nb_codec_tags;
416     SpecifierOpt *sample_fmts;
417     int        nb_sample_fmts;
418     SpecifierOpt *qscale;
419     int        nb_qscale;
420     SpecifierOpt *forced_key_frames;
421     int        nb_forced_key_frames;
422     SpecifierOpt *force_fps;
423     int        nb_force_fps;
424     SpecifierOpt *frame_aspect_ratios;
425     int        nb_frame_aspect_ratios;
426     SpecifierOpt *rc_overrides;
427     int        nb_rc_overrides;
428     SpecifierOpt *intra_matrices;
429     int        nb_intra_matrices;
430     SpecifierOpt *inter_matrices;
431     int        nb_inter_matrices;
432     SpecifierOpt *top_field_first;
433     int        nb_top_field_first;
434     SpecifierOpt *metadata_map;
435     int        nb_metadata_map;
436     SpecifierOpt *presets;
437     int        nb_presets;
438     SpecifierOpt *copy_initial_nonkeyframes;
439     int        nb_copy_initial_nonkeyframes;
440     SpecifierOpt *filters;
441     int        nb_filters;
442 } OptionsContext;
443
444 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
445
446 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
447 {\
448     int i, ret;\
449     for (i = 0; i < o->nb_ ## name; i++) {\
450         char *spec = o->name[i].specifier;\
451         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
452             outvar = o->name[i].u.type;\
453         else if (ret < 0)\
454             exit_program(1);\
455     }\
456 }
457
458 static int64_t getutime(void)
459 {
460 #if HAVE_GETRUSAGE
461     struct rusage rusage;
462
463     getrusage(RUSAGE_SELF, &rusage);
464     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
465 #elif HAVE_GETPROCESSTIMES
466     HANDLE proc;
467     FILETIME c, e, k, u;
468     proc = GetCurrentProcess();
469     GetProcessTimes(proc, &c, &e, &k, &u);
470     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
471 #else
472     return av_gettime();
473 #endif
474 }
475
476 static void update_benchmark(const char *fmt, ...)
477 {
478     if (do_benchmark_all) {
479         int64_t t = getutime();
480         va_list va;
481         char buf[1024];
482
483         if (fmt) {
484             va_start(va, fmt);
485             vsnprintf(buf, sizeof(buf), fmt, va);
486             va_end(va);
487             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
488         }
489         current_time = t;
490     }
491 }
492
493 static void reset_options(OptionsContext *o, int is_input)
494 {
495     const OptionDef *po = options;
496     OptionsContext bak= *o;
497     int i;
498
499     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
500     while (po->name) {
501         void *dst = (uint8_t*)o + po->u.off;
502
503         if (po->flags & OPT_SPEC) {
504             SpecifierOpt **so = dst;
505             int i, *count = (int*)(so + 1);
506             for (i = 0; i < *count; i++) {
507                 av_freep(&(*so)[i].specifier);
508                 if (po->flags & OPT_STRING)
509                     av_freep(&(*so)[i].u.str);
510             }
511             av_freep(so);
512             *count = 0;
513         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
514             av_freep(dst);
515         po++;
516     }
517
518     for (i = 0; i < o->nb_stream_maps; i++)
519         av_freep(&o->stream_maps[i].linklabel);
520     av_freep(&o->stream_maps);
521     av_freep(&o->audio_channel_maps);
522     av_freep(&o->streamid_map);
523
524     memset(o, 0, sizeof(*o));
525
526     if(is_input) o->recording_time = bak.recording_time;
527     else         o->recording_time = INT64_MAX;
528     o->mux_max_delay  = 0.7;
529     o->limit_filesize = UINT64_MAX;
530     o->chapters_input_file = INT_MAX;
531
532     uninit_opts();
533     init_opts();
534 }
535
536 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
537 {
538     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
539     int i, ret;
540     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
541     int h_chroma_shift, v_chroma_shift;
542     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
543     int w = s->width, h = s->height;
544
545     if (!buf)
546         return AVERROR(ENOMEM);
547
548     avcodec_align_dimensions(s, &w, &h);
549
550     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
551         w += 2*edge;
552         h += 2*edge;
553     }
554
555     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
556                               s->pix_fmt, 32)) < 0) {
557         av_freep(&buf);
558         return ret;
559     }
560     /* XXX this shouldn't be needed, but some tests break without this line
561      * those decoders are buggy and need to be fixed.
562      * the following tests fail:
563      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
564      */
565     memset(buf->base[0], 128, ret);
566
567     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
568     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
569         const int h_shift = i==0 ? 0 : h_chroma_shift;
570         const int v_shift = i==0 ? 0 : v_chroma_shift;
571         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
572             buf->data[i] = buf->base[i];
573         else
574             buf->data[i] = buf->base[i] +
575                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
576                                    (pixel_size*edge >> h_shift), 32);
577     }
578     buf->w       = s->width;
579     buf->h       = s->height;
580     buf->pix_fmt = s->pix_fmt;
581     buf->ist     = ist;
582
583     *pbuf = buf;
584     return 0;
585 }
586
587 static void free_buffer_pool(InputStream *ist)
588 {
589     FrameBuffer *buf = ist->buffer_pool;
590     while (buf) {
591         ist->buffer_pool = buf->next;
592         av_freep(&buf->base[0]);
593         av_free(buf);
594         buf = ist->buffer_pool;
595     }
596 }
597
598 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
599 {
600     av_assert0(buf->refcount > 0);
601     buf->refcount--;
602     if (!buf->refcount) {
603         FrameBuffer *tmp;
604         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
605             av_assert1(tmp != buf);
606         buf->next = ist->buffer_pool;
607         ist->buffer_pool = buf;
608     }
609 }
610
611 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
612 {
613     InputStream *ist = s->opaque;
614     FrameBuffer *buf;
615     int ret, i;
616
617     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
618         return -1;
619
620     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
621         return ret;
622
623     buf              = ist->buffer_pool;
624     ist->buffer_pool = buf->next;
625     buf->next        = NULL;
626     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
627         av_freep(&buf->base[0]);
628         av_free(buf);
629         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
630             return ret;
631     }
632     av_assert0(!buf->refcount);
633     buf->refcount++;
634
635     frame->opaque        = buf;
636     frame->type          = FF_BUFFER_TYPE_USER;
637     frame->extended_data = frame->data;
638     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
639     frame->width         = buf->w;
640     frame->height        = buf->h;
641     frame->format        = buf->pix_fmt;
642     frame->sample_aspect_ratio = s->sample_aspect_ratio;
643
644     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
645         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
646         frame->data[i]     = buf->data[i];
647         frame->linesize[i] = buf->linesize[i];
648     }
649
650     return 0;
651 }
652
653 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
654 {
655     InputStream *ist = s->opaque;
656     FrameBuffer *buf = frame->opaque;
657     int i;
658
659     if(frame->type!=FF_BUFFER_TYPE_USER)
660         return avcodec_default_release_buffer(s, frame);
661
662     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
663         frame->data[i] = NULL;
664
665     unref_buffer(ist, buf);
666 }
667
668 static void filter_release_buffer(AVFilterBuffer *fb)
669 {
670     FrameBuffer *buf = fb->priv;
671     av_free(fb);
672     unref_buffer(buf->ist, buf);
673 }
674
675 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
676 {
677     if (codec && codec->pix_fmts) {
678         const enum PixelFormat *p = codec->pix_fmts;
679         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
680         enum PixelFormat best= PIX_FMT_NONE;
681         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
682             if (st->codec->codec_id == CODEC_ID_MJPEG) {
683                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
684             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
685                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
686                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
687             }
688         }
689         for (; *p != PIX_FMT_NONE; p++) {
690             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
691             if (*p == target)
692                 break;
693         }
694         if (*p == PIX_FMT_NONE) {
695             if (target != PIX_FMT_NONE)
696                 av_log(NULL, AV_LOG_WARNING,
697                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
698                        av_pix_fmt_descriptors[target].name,
699                        codec->name,
700                        av_pix_fmt_descriptors[best].name);
701             return best;
702         }
703     }
704     return target;
705 }
706
707 static char *choose_pix_fmts(OutputStream *ost)
708 {
709      if (ost->keep_pix_fmt) {
710         if (ost->filter)
711             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
712                                             AVFILTER_AUTO_CONVERT_NONE);
713         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
714             return NULL;
715         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
716     }
717     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
718         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
719     } else if (ost->enc && ost->enc->pix_fmts) {
720         const enum PixelFormat *p;
721         AVIOContext *s = NULL;
722         uint8_t *ret;
723         int len;
724
725         if (avio_open_dyn_buf(&s) < 0)
726             exit_program(1);
727
728         p = ost->enc->pix_fmts;
729         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
730             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
731                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
732             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
733                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
734                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
735             }
736         }
737
738         for (; *p != PIX_FMT_NONE; p++) {
739             const char *name = av_get_pix_fmt_name(*p);
740             avio_printf(s, "%s:", name);
741         }
742         len = avio_close_dyn_buf(s, &ret);
743         ret[len - 1] = 0;
744         return ret;
745     } else
746         return NULL;
747 }
748
749 /**
750  * Define a function for building a string containing a list of
751  * allowed formats,
752  */
753 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
754 static char *choose_ ## var ## s(OutputStream *ost)                             \
755 {                                                                               \
756     if (ost->st->codec->var != none) {                                          \
757         get_name(ost->st->codec->var);                                          \
758         return av_strdup(name);                                                 \
759     } else if (ost->enc->supported_list) {                                      \
760         const type *p;                                                          \
761         AVIOContext *s = NULL;                                                  \
762         uint8_t *ret;                                                           \
763         int len;                                                                \
764                                                                                 \
765         if (avio_open_dyn_buf(&s) < 0)                                          \
766             exit_program(1);                                                    \
767                                                                                 \
768         for (p = ost->enc->supported_list; *p != none; p++) {                   \
769             get_name(*p);                                                       \
770             avio_printf(s, "%s" separator, name);                               \
771         }                                                                       \
772         len = avio_close_dyn_buf(s, &ret);                                      \
773         ret[len - 1] = 0;                                                       \
774         return ret;                                                             \
775     } else                                                                      \
776         return NULL;                                                            \
777 }
778
779 #define GET_PIX_FMT_NAME(pix_fmt)\
780     const char *name = av_get_pix_fmt_name(pix_fmt);
781
782 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
783 //                   GET_PIX_FMT_NAME, ":")
784
785 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
786     const char *name = av_get_sample_fmt_name(sample_fmt)
787
788 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
789                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
790
791 #define GET_SAMPLE_RATE_NAME(rate)\
792     char name[16];\
793     snprintf(name, sizeof(name), "%d", rate);
794
795 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
796                   GET_SAMPLE_RATE_NAME, ",")
797
798 #define GET_CH_LAYOUT_NAME(ch_layout)\
799     char name[16];\
800     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
801
802 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
803                   GET_CH_LAYOUT_NAME, ",")
804
805 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
806 {
807     FilterGraph *fg = av_mallocz(sizeof(*fg));
808
809     if (!fg)
810         exit_program(1);
811     fg->index = nb_filtergraphs;
812
813     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
814                              fg->nb_outputs + 1);
815     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
816         exit_program(1);
817     fg->outputs[0]->ost   = ost;
818     fg->outputs[0]->graph = fg;
819
820     ost->filter = fg->outputs[0];
821
822     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
823                             fg->nb_inputs + 1);
824     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
825         exit_program(1);
826     fg->inputs[0]->ist   = ist;
827     fg->inputs[0]->graph = fg;
828
829     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
830                               &ist->nb_filters, ist->nb_filters + 1);
831     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
832
833     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
834                               &nb_filtergraphs, nb_filtergraphs + 1);
835     filtergraphs[nb_filtergraphs - 1] = fg;
836
837     return fg;
838 }
839
840 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
841 {
842     InputStream *ist = NULL;
843     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
844     int i;
845
846     // TODO: support other filter types
847     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
848         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
849                "currently.\n");
850         exit_program(1);
851     }
852
853     if (in->name) {
854         AVFormatContext *s;
855         AVStream       *st = NULL;
856         char *p;
857         int file_idx = strtol(in->name, &p, 0);
858
859         if (file_idx < 0 || file_idx >= nb_input_files) {
860             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
861                    file_idx, fg->graph_desc);
862             exit_program(1);
863         }
864         s = input_files[file_idx]->ctx;
865
866         for (i = 0; i < s->nb_streams; i++) {
867             if (s->streams[i]->codec->codec_type != type)
868                 continue;
869             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
870                 st = s->streams[i];
871                 break;
872             }
873         }
874         if (!st) {
875             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
876                    "matches no streams.\n", p, fg->graph_desc);
877             exit_program(1);
878         }
879         ist = input_streams[input_files[file_idx]->ist_index + st->index];
880     } else {
881         /* find the first unused stream of corresponding type */
882         for (i = 0; i < nb_input_streams; i++) {
883             ist = input_streams[i];
884             if (ist->st->codec->codec_type == type && ist->discard)
885                 break;
886         }
887         if (i == nb_input_streams) {
888             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
889                    "unlabeled input pad %d on filter %s", in->pad_idx,
890                    in->filter_ctx->name);
891             exit_program(1);
892         }
893     }
894     ist->discard         = 0;
895     ist->decoding_needed = 1;
896     ist->st->discard = AVDISCARD_NONE;
897
898     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
899                             &fg->nb_inputs, fg->nb_inputs + 1);
900     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
901         exit_program(1);
902     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
903     fg->inputs[fg->nb_inputs - 1]->graph = fg;
904
905     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
906                               &ist->nb_filters, ist->nb_filters + 1);
907     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
908 }
909
910 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
911 {
912     char *pix_fmts;
913     OutputStream *ost = ofilter->ost;
914     AVCodecContext *codec = ost->st->codec;
915     AVFilterContext *last_filter = out->filter_ctx;
916     int pad_idx = out->pad_idx;
917     int ret;
918     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
919
920 #if FF_API_OLD_VSINK_API
921     ret = avfilter_graph_create_filter(&ofilter->filter,
922                                        avfilter_get_by_name("buffersink"),
923                                        "out", NULL, NULL, fg->graph);
924 #else
925     ret = avfilter_graph_create_filter(&ofilter->filter,
926                                        avfilter_get_by_name("buffersink"),
927                                        "out", NULL, buffersink_params, fg->graph);
928 #endif
929     av_freep(&buffersink_params);
930
931     if (ret < 0)
932         return ret;
933
934     if (codec->width || codec->height) {
935         char args[255];
936         AVFilterContext *filter;
937
938         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
939                  codec->width,
940                  codec->height,
941                  (unsigned)ost->sws_flags);
942         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
943                                                 NULL, args, NULL, fg->graph)) < 0)
944             return ret;
945         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
946             return ret;
947
948         last_filter = filter;
949         pad_idx = 0;
950     }
951
952     if ((pix_fmts = choose_pix_fmts(ost))) {
953         AVFilterContext *filter;
954         if ((ret = avfilter_graph_create_filter(&filter,
955                                                 avfilter_get_by_name("format"),
956                                                 "format", pix_fmts, NULL,
957                                                 fg->graph)) < 0)
958             return ret;
959         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
960             return ret;
961
962         last_filter = filter;
963         pad_idx     = 0;
964         av_freep(&pix_fmts);
965     }
966
967     if (ost->frame_rate.num && 0) {
968         AVFilterContext *fps;
969         char args[255];
970
971         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
972                  ost->frame_rate.den);
973         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
974                                            "fps", args, NULL, fg->graph);
975         if (ret < 0)
976             return ret;
977
978         ret = avfilter_link(last_filter, pad_idx, fps, 0);
979         if (ret < 0)
980             return ret;
981         last_filter = fps;
982         pad_idx = 0;
983     }
984
985     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
986         return ret;
987
988     return 0;
989 }
990
991 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
992 {
993     OutputStream *ost = ofilter->ost;
994     AVCodecContext *codec  = ost->st->codec;
995     AVFilterContext *last_filter = out->filter_ctx;
996     int pad_idx = out->pad_idx;
997     char *sample_fmts, *sample_rates, *channel_layouts;
998     int ret;
999
1000     ret = avfilter_graph_create_filter(&ofilter->filter,
1001                                        avfilter_get_by_name("abuffersink_old"),
1002                                        "out", NULL, NULL, fg->graph);
1003     if (ret < 0)
1004         return ret;
1005
1006     if (codec->channels && !codec->channel_layout)
1007         codec->channel_layout = av_get_default_channel_layout(codec->channels);
1008
1009     sample_fmts     = choose_sample_fmts(ost);
1010     sample_rates    = choose_sample_rates(ost);
1011     channel_layouts = choose_channel_layouts(ost);
1012     if (sample_fmts || sample_rates || channel_layouts) {
1013         AVFilterContext *format;
1014         char args[256];
1015         int len = 0;
1016
1017         if (sample_fmts)
1018             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
1019                             sample_fmts);
1020         if (sample_rates)
1021             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
1022                             sample_rates);
1023         if (channel_layouts)
1024             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
1025                             channel_layouts);
1026         args[len - 1] = 0;
1027
1028         av_freep(&sample_fmts);
1029         av_freep(&sample_rates);
1030         av_freep(&channel_layouts);
1031
1032         ret = avfilter_graph_create_filter(&format,
1033                                            avfilter_get_by_name("aformat"),
1034                                            "aformat", args, NULL, fg->graph);
1035         if (ret < 0)
1036             return ret;
1037
1038         ret = avfilter_link(last_filter, pad_idx, format, 0);
1039         if (ret < 0)
1040             return ret;
1041
1042         last_filter = format;
1043         pad_idx = 0;
1044     }
1045
1046 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
1047     AVFilterContext *filt_ctx;                                              \
1048                                                                             \
1049     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1050            "similarly to -af " filter_name "=%s.\n", arg);                  \
1051                                                                             \
1052     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1053                                        avfilter_get_by_name(filter_name),   \
1054                                        filter_name, arg, NULL, fg->graph);  \
1055     if (ret < 0)                                                            \
1056         return ret;                                                         \
1057                                                                             \
1058     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
1059     if (ret < 0)                                                            \
1060         return ret;                                                         \
1061                                                                             \
1062     last_filter = filt_ctx;                                                 \
1063     pad_idx = 0;                                                            \
1064 } while (0)
1065
1066     if (audio_sync_method > 0 && 0) {
1067         char args[256] = {0};
1068
1069         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1070         if (audio_sync_method > 1)
1071             av_strlcatf(args, sizeof(args), ":max_soft_comp=%d", -audio_sync_method);
1072         AUTO_INSERT_FILTER("-async", "aresample", args);
1073     }
1074
1075     if (ost->audio_channels_mapped) {
1076         int i;
1077         AVBPrint pan_buf;
1078         av_bprint_init(&pan_buf, 256, 8192);
1079         av_bprintf(&pan_buf, "0x%"PRIx64,
1080                    av_get_default_channel_layout(ost->audio_channels_mapped));
1081         for (i = 0; i < ost->audio_channels_mapped; i++)
1082             if (ost->audio_channels_map[i] != -1)
1083                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1084
1085         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
1086         av_bprint_finalize(&pan_buf, NULL);
1087     }
1088
1089     if (audio_volume != 256) {
1090         char args[256];
1091
1092         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1093         AUTO_INSERT_FILTER("-vol", "volume", args);
1094     }
1095
1096     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1097         return ret;
1098
1099     return 0;
1100 }
1101
1102 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
1103 {                                                                  \
1104     AVFilterContext *ctx = inout->filter_ctx;                      \
1105     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
1106     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
1107     AVIOContext *pb;                                               \
1108                                                                    \
1109     if (avio_open_dyn_buf(&pb) < 0)                                \
1110         exit_program(1);                                           \
1111                                                                    \
1112     avio_printf(pb, "%s", ctx->filter->name);                      \
1113     if (nb_pads > 1)                                               \
1114         avio_printf(pb, ":%s", pads[inout->pad_idx].name);         \
1115     avio_w8(pb, 0);                                                \
1116     avio_close_dyn_buf(pb, &f->name);                              \
1117 }
1118
1119 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1120 {
1121     av_freep(&ofilter->name);
1122     DESCRIBE_FILTER_LINK(ofilter, out, 0);
1123
1124     switch (out->filter_ctx->output_pads[out->pad_idx].type) {
1125     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
1126     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
1127     default: av_assert0(0);
1128     }
1129 }
1130
1131 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
1132                                         AVFilterInOut *in)
1133 {
1134     AVFilterContext *first_filter = in->filter_ctx;
1135     AVFilter *filter = avfilter_get_by_name("buffer");
1136     InputStream *ist = ifilter->ist;
1137     AVRational tb = ist->framerate.num ? (AVRational){ist->framerate.den,
1138                                                       ist->framerate.num} :
1139                                          ist->st->time_base;
1140     AVRational sar;
1141     char args[255];
1142     int pad_idx = in->pad_idx;
1143     int ret;
1144
1145     sar = ist->st->sample_aspect_ratio.num ?
1146           ist->st->sample_aspect_ratio :
1147           ist->st->codec->sample_aspect_ratio;
1148     snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
1149              ist->st->codec->height, ist->st->codec->pix_fmt,
1150              tb.num, tb.den, sar.num, sar.den,
1151              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
1152
1153     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, in->name,
1154                                             args, NULL, fg->graph)) < 0)
1155         return ret;
1156
1157     if (ist->framerate.num) {
1158         AVFilterContext *setpts;
1159
1160         if ((ret = avfilter_graph_create_filter(&setpts,
1161                                                 avfilter_get_by_name("setpts"),
1162                                                 "setpts", "N", NULL,
1163                                                 fg->graph)) < 0)
1164             return ret;
1165
1166         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
1167             return ret;
1168
1169         first_filter = setpts;
1170         pad_idx = 0;
1171     }
1172
1173     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1174         return ret;
1175     return 0;
1176 }
1177
1178 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
1179                                         AVFilterInOut *in)
1180 {
1181     AVFilterContext *first_filter = in->filter_ctx;
1182     AVFilter *filter = avfilter_get_by_name("abuffer");
1183     InputStream *ist = ifilter->ist;
1184     int pad_idx = in->pad_idx;
1185     char args[255];
1186     int ret;
1187
1188     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
1189              ":channel_layout=0x%"PRIx64,
1190              ist->st->time_base.num, ist->st->time_base.den,
1191              ist->st->codec->sample_rate,
1192              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
1193              ist->st->codec->channel_layout);
1194
1195     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
1196                                             in->name, args, NULL,
1197                                             fg->graph)) < 0)
1198         return ret;
1199
1200 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do {                 \
1201     AVFilterContext *filt_ctx;                                              \
1202                                                                             \
1203     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1204            "similarly to -af " filter_name "=%s.\n", arg);                  \
1205                                                                             \
1206     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1207                                        avfilter_get_by_name(filter_name),   \
1208                                        filter_name, arg, NULL, fg->graph);  \
1209     if (ret < 0)                                                            \
1210         return ret;                                                         \
1211                                                                             \
1212     ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx);                \
1213     if (ret < 0)                                                            \
1214         return ret;                                                         \
1215                                                                             \
1216     first_filter = filt_ctx;                                                  \
1217 } while (0)
1218
1219     if (audio_sync_method > 0) {
1220         char args[256] = {0};
1221
1222         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1223         if (audio_sync_method > 1)
1224             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
1225         AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
1226     }
1227
1228 //     if (ost->audio_channels_mapped) {
1229 //         int i;
1230 //         AVBPrint pan_buf;
1231 //         av_bprint_init(&pan_buf, 256, 8192);
1232 //         av_bprintf(&pan_buf, "0x%"PRIx64,
1233 //                    av_get_default_channel_layout(ost->audio_channels_mapped));
1234 //         for (i = 0; i < ost->audio_channels_mapped; i++)
1235 //             if (ost->audio_channels_map[i] != -1)
1236 //                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1237 //         AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
1238 //         av_bprint_finalize(&pan_buf, NULL);
1239 //     }
1240
1241     if (audio_volume != 256) {
1242         char args[256];
1243
1244         snprintf(args, sizeof(args), "%f", audio_volume / 256.);
1245         AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
1246     }
1247     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
1248         return ret;
1249
1250     return 0;
1251 }
1252
1253 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
1254                                   AVFilterInOut *in)
1255 {
1256     av_freep(&ifilter->name);
1257     DESCRIBE_FILTER_LINK(ifilter, in, 1);
1258
1259     switch (in->filter_ctx->input_pads[in->pad_idx].type) {
1260     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
1261     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
1262     default: av_assert0(0);
1263     }
1264 }
1265
1266 static int configure_filtergraph(FilterGraph *fg)
1267 {
1268     AVFilterInOut *inputs, *outputs, *cur;
1269     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
1270     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1271                                       fg->graph_desc;
1272
1273     avfilter_graph_free(&fg->graph);
1274     if (!(fg->graph = avfilter_graph_alloc()))
1275         return AVERROR(ENOMEM);
1276
1277     if (simple) {
1278         OutputStream *ost = fg->outputs[0]->ost;
1279         char args[255];
1280         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1281         fg->graph->scale_sws_opts = av_strdup(args);
1282     }
1283
1284     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1285         return ret;
1286
1287     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1288         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
1289                "exactly one input and output.\n", graph_desc);
1290         return AVERROR(EINVAL);
1291     }
1292
1293     for (cur = inputs; !simple && init && cur; cur = cur->next)
1294         init_input_filter(fg, cur);
1295
1296     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1297         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
1298             return ret;
1299     avfilter_inout_free(&inputs);
1300
1301     if (!init || simple) {
1302         /* we already know the mappings between lavfi outputs and output streams,
1303          * so we can finish the setup */
1304         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1305             configure_output_filter(fg, fg->outputs[i], cur);
1306         avfilter_inout_free(&outputs);
1307
1308         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1309             return ret;
1310     } else {
1311         /* wait until output mappings are processed */
1312         for (cur = outputs; cur;) {
1313             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1314                                      &fg->nb_outputs, fg->nb_outputs + 1);
1315             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1316                 exit_program(1);
1317             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1318             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1319             cur = cur->next;
1320             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1321         }
1322     }
1323
1324     return 0;
1325 }
1326
1327 static int configure_complex_filters(void)
1328 {
1329     int i, ret = 0;
1330
1331     for (i = 0; i < nb_filtergraphs; i++)
1332         if (!filtergraphs[i]->graph &&
1333             (ret = configure_filtergraph(filtergraphs[i])) < 0)
1334             return ret;
1335     return 0;
1336 }
1337
1338 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1339 {
1340     int i;
1341     for (i = 0; i < fg->nb_inputs; i++)
1342         if (fg->inputs[i]->ist == ist)
1343             return 1;
1344     return 0;
1345 }
1346
1347 static void term_exit(void)
1348 {
1349     av_log(NULL, AV_LOG_QUIET, "%s", "");
1350 #if HAVE_TERMIOS_H
1351     if(restore_tty)
1352         tcsetattr (0, TCSANOW, &oldtty);
1353 #endif
1354 }
1355
1356 static volatile int received_sigterm = 0;
1357
1358 static void sigterm_handler(int sig)
1359 {
1360     received_sigterm = sig;
1361     received_nb_signals++;
1362     term_exit();
1363     if(received_nb_signals > 3)
1364         exit(123);
1365 }
1366
1367 static void term_init(void)
1368 {
1369 #if HAVE_TERMIOS_H
1370     if(!run_as_daemon){
1371         struct termios tty;
1372
1373         if (tcgetattr (0, &tty) == 0) {
1374             oldtty = tty;
1375             restore_tty = 1;
1376             atexit(term_exit);
1377
1378             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1379                              |INLCR|IGNCR|ICRNL|IXON);
1380             tty.c_oflag |= OPOST;
1381             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1382             tty.c_cflag &= ~(CSIZE|PARENB);
1383             tty.c_cflag |= CS8;
1384             tty.c_cc[VMIN] = 1;
1385             tty.c_cc[VTIME] = 0;
1386
1387             tcsetattr (0, TCSANOW, &tty);
1388         }
1389         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1390     }
1391 #endif
1392     avformat_network_deinit();
1393
1394     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1395     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1396 #ifdef SIGXCPU
1397     signal(SIGXCPU, sigterm_handler);
1398 #endif
1399 }
1400
1401 /* read a key without blocking */
1402 static int read_key(void)
1403 {
1404     unsigned char ch;
1405 #if HAVE_TERMIOS_H
1406     int n = 1;
1407     struct timeval tv;
1408     fd_set rfds;
1409
1410     FD_ZERO(&rfds);
1411     FD_SET(0, &rfds);
1412     tv.tv_sec = 0;
1413     tv.tv_usec = 0;
1414     n = select(1, &rfds, NULL, NULL, &tv);
1415     if (n > 0) {
1416         n = read(0, &ch, 1);
1417         if (n == 1)
1418             return ch;
1419
1420         return n;
1421     }
1422 #elif HAVE_KBHIT
1423 #    if HAVE_PEEKNAMEDPIPE
1424     static int is_pipe;
1425     static HANDLE input_handle;
1426     DWORD dw, nchars;
1427     if(!input_handle){
1428         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1429         is_pipe = !GetConsoleMode(input_handle, &dw);
1430     }
1431
1432     if (stdin->_cnt > 0) {
1433         read(0, &ch, 1);
1434         return ch;
1435     }
1436     if (is_pipe) {
1437         /* When running under a GUI, you will end here. */
1438         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1439             return -1;
1440         //Read it
1441         if(nchars != 0) {
1442             read(0, &ch, 1);
1443             return ch;
1444         }else{
1445             return -1;
1446         }
1447     }
1448 #    endif
1449     if(kbhit())
1450         return(getch());
1451 #endif
1452     return -1;
1453 }
1454
1455 static int decode_interrupt_cb(void *ctx)
1456 {
1457     return received_nb_signals > 1;
1458 }
1459
1460 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1461
1462 void av_noreturn exit_program(int ret)
1463 {
1464     int i, j;
1465
1466     for (i = 0; i < nb_filtergraphs; i++) {
1467         avfilter_graph_free(&filtergraphs[i]->graph);
1468         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
1469             av_freep(&filtergraphs[i]->inputs[j]->name);
1470             av_freep(&filtergraphs[i]->inputs[j]);
1471         }
1472         av_freep(&filtergraphs[i]->inputs);
1473         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
1474             av_freep(&filtergraphs[i]->outputs[j]->name);
1475             av_freep(&filtergraphs[i]->outputs[j]);
1476         }
1477         av_freep(&filtergraphs[i]->outputs);
1478         av_freep(&filtergraphs[i]);
1479     }
1480     av_freep(&filtergraphs);
1481
1482     /* close files */
1483     for (i = 0; i < nb_output_files; i++) {
1484         AVFormatContext *s = output_files[i]->ctx;
1485         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1486             avio_close(s->pb);
1487         avformat_free_context(s);
1488         av_dict_free(&output_files[i]->opts);
1489         av_freep(&output_files[i]);
1490     }
1491     for (i = 0; i < nb_output_streams; i++) {
1492         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1493         while (bsfc) {
1494             AVBitStreamFilterContext *next = bsfc->next;
1495             av_bitstream_filter_close(bsfc);
1496             bsfc = next;
1497         }
1498         output_streams[i]->bitstream_filters = NULL;
1499
1500         av_freep(&output_streams[i]->filtered_frame);
1501         av_freep(&output_streams[i]);
1502     }
1503     for (i = 0; i < nb_input_files; i++) {
1504         avformat_close_input(&input_files[i]->ctx);
1505         av_freep(&input_files[i]);
1506     }
1507     for (i = 0; i < nb_input_streams; i++) {
1508         av_freep(&input_streams[i]->decoded_frame);
1509         av_dict_free(&input_streams[i]->opts);
1510         free_buffer_pool(input_streams[i]);
1511         av_freep(&input_streams[i]->filters);
1512         av_freep(&input_streams[i]);
1513     }
1514
1515     if (vstats_file)
1516         fclose(vstats_file);
1517     av_free(vstats_filename);
1518
1519     av_freep(&input_streams);
1520     av_freep(&input_files);
1521     av_freep(&output_streams);
1522     av_freep(&output_files);
1523
1524     uninit_opts();
1525
1526     avfilter_uninit();
1527     avformat_network_deinit();
1528
1529     if (received_sigterm) {
1530         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1531                (int) received_sigterm);
1532         exit (255);
1533     }
1534
1535     exit(ret);
1536 }
1537
1538 static void assert_avoptions(AVDictionary *m)
1539 {
1540     AVDictionaryEntry *t;
1541     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1542         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1543         exit_program(1);
1544     }
1545 }
1546
1547 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1548 {
1549     const char *codec_string = encoder ? "encoder" : "decoder";
1550     AVCodec *codec;
1551     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1552         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1553         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1554                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1555                 codec_string, c->codec->name);
1556         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1557         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1558             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1559                    codec_string, codec->name);
1560         exit_program(1);
1561     }
1562 }
1563
1564 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1565 {
1566     if (codec && codec->sample_fmts) {
1567         const enum AVSampleFormat *p = codec->sample_fmts;
1568         for (; *p != -1; p++) {
1569             if (*p == st->codec->sample_fmt)
1570                 break;
1571         }
1572         if (*p == -1) {
1573             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1574                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1575             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1576             av_log(NULL, AV_LOG_WARNING,
1577                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1578                    av_get_sample_fmt_name(st->codec->sample_fmt),
1579                    codec->name,
1580                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1581             st->codec->sample_fmt = codec->sample_fmts[0];
1582         }
1583     }
1584 }
1585
1586 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1587 {
1588     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1589     AVCodecContext          *avctx = ost->st->codec;
1590     int ret;
1591
1592     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1593         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1594         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1595
1596     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1597         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1598         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1599             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1600             pkt->pts = pkt->dts = max;
1601         }
1602     }
1603
1604     /*
1605      * Audio encoders may split the packets --  #frames in != #packets out.
1606      * But there is no reordering, so we can limit the number of output packets
1607      * by simply dropping them here.
1608      * Counting encoded video frames needs to be done separately because of
1609      * reordering, see do_video_out()
1610      */
1611     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1612         if (ost->frame_number >= ost->max_frames) {
1613             av_free_packet(pkt);
1614             return;
1615         }
1616         ost->frame_number++;
1617     }
1618
1619     while (bsfc) {
1620         AVPacket new_pkt = *pkt;
1621         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1622                                            &new_pkt.data, &new_pkt.size,
1623                                            pkt->data, pkt->size,
1624                                            pkt->flags & AV_PKT_FLAG_KEY);
1625         if (a > 0) {
1626             av_free_packet(pkt);
1627             new_pkt.destruct = av_destruct_packet;
1628         } else if (a < 0) {
1629             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1630                    bsfc->filter->name, pkt->stream_index,
1631                    avctx->codec ? avctx->codec->name : "copy");
1632             print_error("", a);
1633             if (exit_on_error)
1634                 exit_program(1);
1635         }
1636         *pkt = new_pkt;
1637
1638         bsfc = bsfc->next;
1639     }
1640
1641     pkt->stream_index = ost->index;
1642     ret = av_interleaved_write_frame(s, pkt);
1643     if (ret < 0) {
1644         print_error("av_interleaved_write_frame()", ret);
1645         exit_program(1);
1646     }
1647 }
1648
1649 static int check_recording_time(OutputStream *ost)
1650 {
1651     OutputFile *of = output_files[ost->file_index];
1652
1653     if (of->recording_time != INT64_MAX &&
1654         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1655                       AV_TIME_BASE_Q) >= 0) {
1656         ost->is_past_recording_time = 1;
1657         return 0;
1658     }
1659     return 1;
1660 }
1661
1662 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1663                          AVFrame *frame)
1664 {
1665     AVCodecContext *enc = ost->st->codec;
1666     AVPacket pkt;
1667     int got_packet = 0;
1668
1669     av_init_packet(&pkt);
1670     pkt.data = NULL;
1671     pkt.size = 0;
1672 #if 0
1673     if (!check_recording_time(ost))
1674         return;
1675 #endif
1676     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1677         frame->pts = ost->sync_opts;
1678     ost->sync_opts = frame->pts + frame->nb_samples;
1679
1680     av_assert0(pkt.size || !pkt.data);
1681     update_benchmark(NULL);
1682     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1683         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1684         exit_program(1);
1685     }
1686     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1687
1688     if (got_packet) {
1689         if (pkt.pts != AV_NOPTS_VALUE)
1690             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1691         if (pkt.dts != AV_NOPTS_VALUE)
1692             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1693         if (pkt.duration > 0)
1694             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1695
1696         if (debug_ts) {
1697             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1698                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1699                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1700                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1701         }
1702
1703         write_frame(s, &pkt, ost);
1704
1705         audio_size += pkt.size;
1706         av_free_packet(&pkt);
1707     }
1708 }
1709
1710 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1711 {
1712     AVCodecContext *dec;
1713     AVPicture *picture2;
1714     AVPicture picture_tmp;
1715     uint8_t *buf = 0;
1716
1717     dec = ist->st->codec;
1718
1719     /* deinterlace : must be done before any resize */
1720     if (do_deinterlace) {
1721         int size;
1722
1723         /* create temporary picture */
1724         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1725         buf  = av_malloc(size);
1726         if (!buf)
1727             return;
1728
1729         picture2 = &picture_tmp;
1730         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1731
1732         if (avpicture_deinterlace(picture2, picture,
1733                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1734             /* if error, do not deinterlace */
1735             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1736             av_free(buf);
1737             buf = NULL;
1738             picture2 = picture;
1739         }
1740     } else {
1741         picture2 = picture;
1742     }
1743
1744     if (picture != picture2)
1745         *picture = *picture2;
1746     *bufp = buf;
1747 }
1748
1749 static void do_subtitle_out(AVFormatContext *s,
1750                             OutputStream *ost,
1751                             InputStream *ist,
1752                             AVSubtitle *sub,
1753                             int64_t pts)
1754 {
1755     static uint8_t *subtitle_out = NULL;
1756     int subtitle_out_max_size = 1024 * 1024;
1757     int subtitle_out_size, nb, i;
1758     AVCodecContext *enc;
1759     AVPacket pkt;
1760
1761     if (pts == AV_NOPTS_VALUE) {
1762         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1763         if (exit_on_error)
1764             exit_program(1);
1765         return;
1766     }
1767
1768     enc = ost->st->codec;
1769
1770     if (!subtitle_out) {
1771         subtitle_out = av_malloc(subtitle_out_max_size);
1772     }
1773
1774     /* Note: DVB subtitle need one packet to draw them and one other
1775        packet to clear them */
1776     /* XXX: signal it in the codec context ? */
1777     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1778         nb = 2;
1779     else
1780         nb = 1;
1781
1782     for (i = 0; i < nb; i++) {
1783         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1784
1785         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1786         // start_display_time is required to be 0
1787         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1788         sub->end_display_time  -= sub->start_display_time;
1789         sub->start_display_time = 0;
1790         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1791                                                     subtitle_out_max_size, sub);
1792         if (subtitle_out_size < 0) {
1793             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1794             exit_program(1);
1795         }
1796
1797         av_init_packet(&pkt);
1798         pkt.data = subtitle_out;
1799         pkt.size = subtitle_out_size;
1800         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1801         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1802             /* XXX: the pts correction is handled here. Maybe handling
1803                it in the codec would be better */
1804             if (i == 0)
1805                 pkt.pts += 90 * sub->start_display_time;
1806             else
1807                 pkt.pts += 90 * sub->end_display_time;
1808         }
1809         write_frame(s, &pkt, ost);
1810     }
1811 }
1812
1813 static void do_video_out(AVFormatContext *s,
1814                          OutputStream *ost,
1815                          AVFrame *in_picture,
1816                          float quality)
1817 {
1818     int ret, format_video_sync;
1819     AVPacket pkt;
1820     AVCodecContext *enc = ost->st->codec;
1821     int nb_frames, i;
1822     double sync_ipts, delta;
1823     double duration = 0;
1824     int frame_size = 0;
1825     InputStream *ist = NULL;
1826
1827     if (ost->source_index >= 0)
1828         ist = input_streams[ost->source_index];
1829
1830     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1831         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1832
1833     sync_ipts = in_picture->pts;
1834     delta = sync_ipts - ost->sync_opts + duration;
1835
1836     /* by default, we output a single frame */
1837     nb_frames = 1;
1838
1839     format_video_sync = video_sync_method;
1840     if (format_video_sync == VSYNC_AUTO)
1841         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1842
1843     switch (format_video_sync) {
1844     case VSYNC_CFR:
1845         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1846         if (delta < -1.1)
1847             nb_frames = 0;
1848         else if (delta > 1.1)
1849             nb_frames = lrintf(delta);
1850         break;
1851     case VSYNC_VFR:
1852         if (delta <= -0.6)
1853             nb_frames = 0;
1854         else if (delta > 0.6)
1855             ost->sync_opts = lrint(sync_ipts);
1856         break;
1857     case VSYNC_DROP:
1858     case VSYNC_PASSTHROUGH:
1859         ost->sync_opts = lrint(sync_ipts);
1860         break;
1861     default:
1862         av_assert0(0);
1863     }
1864
1865     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1866     if (nb_frames == 0) {
1867         nb_frames_drop++;
1868         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1869         return;
1870     } else if (nb_frames > 1) {
1871         nb_frames_dup += nb_frames - 1;
1872         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1873     }
1874
1875
1876 duplicate_frame:
1877     av_init_packet(&pkt);
1878     pkt.data = NULL;
1879     pkt.size = 0;
1880
1881     in_picture->pts = ost->sync_opts;
1882
1883     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1884         enc->codec->id == CODEC_ID_RAWVIDEO) {
1885         /* raw pictures are written as AVPicture structure to
1886            avoid any copies. We support temporarily the older
1887            method. */
1888         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1889         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1890         pkt.data   = (uint8_t *)in_picture;
1891         pkt.size   =  sizeof(AVPicture);
1892         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1893         pkt.flags |= AV_PKT_FLAG_KEY;
1894
1895         write_frame(s, &pkt, ost);
1896     } else {
1897         int got_packet;
1898         AVFrame big_picture;
1899
1900         big_picture = *in_picture;
1901         /* better than nothing: use input picture interlaced
1902            settings */
1903         big_picture.interlaced_frame = in_picture->interlaced_frame;
1904         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1905             if (ost->top_field_first == -1)
1906                 big_picture.top_field_first = in_picture->top_field_first;
1907             else
1908                 big_picture.top_field_first = !!ost->top_field_first;
1909         }
1910
1911         /* handles same_quant here. This is not correct because it may
1912            not be a global option */
1913         big_picture.quality = quality;
1914         if (!enc->me_threshold)
1915             big_picture.pict_type = 0;
1916         if (ost->forced_kf_index < ost->forced_kf_count &&
1917             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1918             big_picture.pict_type = AV_PICTURE_TYPE_I;
1919             ost->forced_kf_index++;
1920         }
1921         update_benchmark(NULL);
1922         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1923         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1924         if (ret < 0) {
1925             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1926             exit_program(1);
1927         }
1928
1929         if (got_packet) {
1930             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1931                 pkt.pts = ost->sync_opts;
1932
1933             if (pkt.pts != AV_NOPTS_VALUE)
1934                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1935             if (pkt.dts != AV_NOPTS_VALUE)
1936                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1937
1938             if (debug_ts) {
1939                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1940                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1941                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1942                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1943             }
1944
1945             write_frame(s, &pkt, ost);
1946             frame_size = pkt.size;
1947             video_size += pkt.size;
1948             av_free_packet(&pkt);
1949
1950             /* if two pass, output log */
1951             if (ost->logfile && enc->stats_out) {
1952                 fprintf(ost->logfile, "%s", enc->stats_out);
1953             }
1954         }
1955     }
1956     ost->sync_opts++;
1957     /*
1958      * For video, number of frames in == number of packets out.
1959      * But there may be reordering, so we can't throw away frames on encoder
1960      * flush, we need to limit them here, before they go into encoder.
1961      */
1962     ost->frame_number++;
1963
1964     if(--nb_frames)
1965         goto duplicate_frame;
1966
1967     if (vstats_filename && frame_size)
1968         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1969 }
1970
1971 static double psnr(double d)
1972 {
1973     return -10.0 * log(d) / log(10.0);
1974 }
1975
1976 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1977                            int frame_size)
1978 {
1979     AVCodecContext *enc;
1980     int frame_number;
1981     double ti1, bitrate, avg_bitrate;
1982
1983     /* this is executed just the first time do_video_stats is called */
1984     if (!vstats_file) {
1985         vstats_file = fopen(vstats_filename, "w");
1986         if (!vstats_file) {
1987             perror("fopen");
1988             exit_program(1);
1989         }
1990     }
1991
1992     enc = ost->st->codec;
1993     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1994         frame_number = ost->frame_number;
1995         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1996         if (enc->flags&CODEC_FLAG_PSNR)
1997             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1998
1999         fprintf(vstats_file,"f_size= %6d ", frame_size);
2000         /* compute pts value */
2001         ti1 = ost->sync_opts * av_q2d(enc->time_base);
2002         if (ti1 < 0.01)
2003             ti1 = 0.01;
2004
2005         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
2006         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
2007         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
2008                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
2009         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
2010     }
2011 }
2012
2013 /* check for new output on any of the filtergraphs */
2014 static int poll_filters(void)
2015 {
2016     AVFilterBufferRef *picref;
2017     AVFrame *filtered_frame = NULL;
2018     int i, ret, ret_all;
2019     unsigned nb_success, nb_eof;
2020     int64_t frame_pts;
2021
2022     while (1) {
2023         /* Reap all buffers present in the buffer sinks */
2024         for (i = 0; i < nb_output_streams; i++) {
2025             OutputStream *ost = output_streams[i];
2026             OutputFile    *of = output_files[ost->file_index];
2027             int ret = 0;
2028
2029             if (!ost->filter || ost->is_past_recording_time)
2030                 continue;
2031
2032             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2033                 return AVERROR(ENOMEM);
2034             } else
2035                 avcodec_get_frame_defaults(ost->filtered_frame);
2036             filtered_frame = ost->filtered_frame;
2037
2038             while (1) {
2039                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
2040                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2041                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2042                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
2043                                                     ost->st->codec->frame_size);
2044                 else
2045 #ifdef SINKA
2046                     ret = av_buffersink_read(ost->filter->filter, &picref);
2047 #else
2048                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
2049                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
2050 #endif
2051                 if (ret < 0) {
2052                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
2053                         char buf[256];
2054                         av_strerror(ret, buf, sizeof(buf));
2055                         av_log(NULL, AV_LOG_WARNING,
2056                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
2057                     }
2058                     break;
2059                 }
2060                 frame_pts = AV_NOPTS_VALUE;
2061                 if (picref->pts != AV_NOPTS_VALUE) {
2062                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
2063                                                     ost->filter->filter->inputs[0]->time_base,
2064                                                     ost->st->codec->time_base) -
2065                                         av_rescale_q(of->start_time,
2066                                                     AV_TIME_BASE_Q,
2067                                                     ost->st->codec->time_base);
2068
2069                     if (of->start_time && filtered_frame->pts < 0) {
2070                         avfilter_unref_buffer(picref);
2071                         continue;
2072                     }
2073                 }
2074                 //if (ost->source_index >= 0)
2075                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2076
2077
2078                 switch (ost->filter->filter->inputs[0]->type) {
2079                 case AVMEDIA_TYPE_VIDEO:
2080                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2081                     filtered_frame->pts = frame_pts;
2082                     if (!ost->frame_aspect_ratio)
2083                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2084
2085                     do_video_out(of->ctx, ost, filtered_frame,
2086                                  same_quant ? ost->last_quality :
2087                                               ost->st->codec->global_quality);
2088                     break;
2089                 case AVMEDIA_TYPE_AUDIO:
2090                     avfilter_copy_buf_props(filtered_frame, picref);
2091                     filtered_frame->pts = frame_pts;
2092                     do_audio_out(of->ctx, ost, filtered_frame);
2093                     break;
2094                 default:
2095                     // TODO support subtitle filters
2096                     av_assert0(0);
2097                 }
2098
2099                 avfilter_unref_buffer(picref);
2100             }
2101         }
2102         /* Request frames through all the graphs */
2103         ret_all = nb_success = nb_eof = 0;
2104         for (i = 0; i < nb_filtergraphs; i++) {
2105             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2106             if (!ret) {
2107                 nb_success++;
2108             } else if (ret == AVERROR_EOF) {
2109                 nb_eof++;
2110             } else if (ret != AVERROR(EAGAIN)) {
2111                 char buf[256];
2112                 av_strerror(ret, buf, sizeof(buf));
2113                 av_log(NULL, AV_LOG_WARNING,
2114                        "Error in request_frame(): %s\n", buf);
2115                 ret_all = ret;
2116             }
2117         }
2118         if (!nb_success)
2119             break;
2120         /* Try again if anything succeeded */
2121     }
2122     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2123 }
2124
2125 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2126 {
2127     char buf[1024];
2128     OutputStream *ost;
2129     AVFormatContext *oc;
2130     int64_t total_size;
2131     AVCodecContext *enc;
2132     int frame_number, vid, i;
2133     double bitrate;
2134     int64_t pts = INT64_MAX;
2135     static int64_t last_time = -1;
2136     static int qp_histogram[52];
2137     int hours, mins, secs, us;
2138
2139     if (!print_stats && !is_last_report)
2140         return;
2141
2142     if (!is_last_report) {
2143         if (last_time == -1) {
2144             last_time = cur_time;
2145             return;
2146         }
2147         if ((cur_time - last_time) < 500000)
2148             return;
2149         last_time = cur_time;
2150     }
2151
2152
2153     oc = output_files[0]->ctx;
2154
2155     total_size = avio_size(oc->pb);
2156     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2157         total_size = avio_tell(oc->pb);
2158         if (total_size < 0)
2159             total_size = 0;
2160     }
2161
2162     buf[0] = '\0';
2163     vid = 0;
2164     for (i = 0; i < nb_output_streams; i++) {
2165         float q = -1;
2166         ost = output_streams[i];
2167         enc = ost->st->codec;
2168         if (!ost->stream_copy && enc->coded_frame)
2169             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2170         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2171             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2172         }
2173         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2174             float fps, t = (cur_time-timer_start) / 1000000.0;
2175
2176             frame_number = ost->frame_number;
2177             fps = t > 1 ? frame_number / t : 0;
2178             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2179                      frame_number, fps < 9.95, fps, q);
2180             if (is_last_report)
2181                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2182             if (qp_hist) {
2183                 int j;
2184                 int qp = lrintf(q);
2185                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2186                     qp_histogram[qp]++;
2187                 for (j = 0; j < 32; j++)
2188                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2189             }
2190             if (enc->flags&CODEC_FLAG_PSNR) {
2191                 int j;
2192                 double error, error_sum = 0;
2193                 double scale, scale_sum = 0;
2194                 char type[3] = { 'Y','U','V' };
2195                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2196                 for (j = 0; j < 3; j++) {
2197                     if (is_last_report) {
2198                         error = enc->error[j];
2199                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2200                     } else {
2201                         error = enc->coded_frame->error[j];
2202                         scale = enc->width * enc->height * 255.0 * 255.0;
2203                     }
2204                     if (j)
2205                         scale /= 4;
2206                     error_sum += error;
2207                     scale_sum += scale;
2208                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2209                 }
2210                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2211             }
2212             vid = 1;
2213         }
2214         /* compute min output value */
2215         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2216                                       ost->st->time_base, AV_TIME_BASE_Q));
2217     }
2218
2219     secs = pts / AV_TIME_BASE;
2220     us = pts % AV_TIME_BASE;
2221     mins = secs / 60;
2222     secs %= 60;
2223     hours = mins / 60;
2224     mins %= 60;
2225
2226     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2227
2228     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2229              "size=%8.0fkB time=", total_size / 1024.0);
2230     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2231              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2232              (100 * us) / AV_TIME_BASE);
2233     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2234              "bitrate=%6.1fkbits/s", bitrate);
2235
2236     if (nb_frames_dup || nb_frames_drop)
2237         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2238                 nb_frames_dup, nb_frames_drop);
2239
2240     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2241
2242     fflush(stderr);
2243
2244     if (is_last_report) {
2245         int64_t raw= audio_size + video_size + extra_size;
2246         av_log(NULL, AV_LOG_INFO, "\n");
2247         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2248                video_size / 1024.0,
2249                audio_size / 1024.0,
2250                extra_size / 1024.0,
2251                100.0 * (total_size - raw) / raw
2252         );
2253         if(video_size + audio_size + extra_size == 0){
2254             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2255         }
2256     }
2257 }
2258
2259 static void flush_encoders(void)
2260 {
2261     int i, ret;
2262
2263     for (i = 0; i < nb_output_streams; i++) {
2264         OutputStream   *ost = output_streams[i];
2265         AVCodecContext *enc = ost->st->codec;
2266         AVFormatContext *os = output_files[ost->file_index]->ctx;
2267         int stop_encoding = 0;
2268
2269         if (!ost->encoding_needed)
2270             continue;
2271
2272         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2273             continue;
2274         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2275             continue;
2276
2277         for (;;) {
2278             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2279             const char *desc;
2280             int64_t *size;
2281
2282             switch (ost->st->codec->codec_type) {
2283             case AVMEDIA_TYPE_AUDIO:
2284                 encode = avcodec_encode_audio2;
2285                 desc   = "Audio";
2286                 size   = &audio_size;
2287                 break;
2288             case AVMEDIA_TYPE_VIDEO:
2289                 encode = avcodec_encode_video2;
2290                 desc   = "Video";
2291                 size   = &video_size;
2292                 break;
2293             default:
2294                 stop_encoding = 1;
2295             }
2296
2297             if (encode) {
2298                 AVPacket pkt;
2299                 int got_packet;
2300                 av_init_packet(&pkt);
2301                 pkt.data = NULL;
2302                 pkt.size = 0;
2303
2304                 update_benchmark(NULL);
2305                 ret = encode(enc, &pkt, NULL, &got_packet);
2306                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2307                 if (ret < 0) {
2308                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2309                     exit_program(1);
2310                 }
2311                 *size += pkt.size;
2312                 if (ost->logfile && enc->stats_out) {
2313                     fprintf(ost->logfile, "%s", enc->stats_out);
2314                 }
2315                 if (!got_packet) {
2316                     stop_encoding = 1;
2317                     break;
2318                 }
2319                 if (pkt.pts != AV_NOPTS_VALUE)
2320                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2321                 if (pkt.dts != AV_NOPTS_VALUE)
2322                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2323                 write_frame(os, &pkt, ost);
2324             }
2325
2326             if (stop_encoding)
2327                 break;
2328         }
2329     }
2330 }
2331
2332 /*
2333  * Check whether a packet from ist should be written into ost at this time
2334  */
2335 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2336 {
2337     OutputFile *of = output_files[ost->file_index];
2338     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2339
2340     if (ost->source_index != ist_index)
2341         return 0;
2342
2343     if (of->start_time && ist->pts < of->start_time)
2344         return 0;
2345
2346     if (of->recording_time != INT64_MAX &&
2347         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2348                       (AVRational){ 1, 1000000 }) >= 0) {
2349         ost->is_past_recording_time = 1;
2350         return 0;
2351     }
2352
2353     return 1;
2354 }
2355
2356 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2357 {
2358     OutputFile *of = output_files[ost->file_index];
2359     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2360     AVPicture pict;
2361     AVPacket opkt;
2362
2363     av_init_packet(&opkt);
2364
2365     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2366         !ost->copy_initial_nonkeyframes)
2367         return;
2368
2369     /* force the input stream PTS */
2370     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2371         audio_size += pkt->size;
2372     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2373         video_size += pkt->size;
2374         ost->sync_opts++;
2375     }
2376
2377     if (pkt->pts != AV_NOPTS_VALUE)
2378         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2379     else
2380         opkt.pts = AV_NOPTS_VALUE;
2381
2382     if (pkt->dts == AV_NOPTS_VALUE)
2383         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2384     else
2385         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2386     opkt.dts -= ost_tb_start_time;
2387
2388     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2389     opkt.flags    = pkt->flags;
2390
2391     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2392     if (  ost->st->codec->codec_id != CODEC_ID_H264
2393        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2394        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2395        && ost->st->codec->codec_id != CODEC_ID_VC1
2396        ) {
2397         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2398             opkt.destruct = av_destruct_packet;
2399     } else {
2400         opkt.data = pkt->data;
2401         opkt.size = pkt->size;
2402     }
2403     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2404         /* store AVPicture in AVPacket, as expected by the output format */
2405         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2406         opkt.data = (uint8_t *)&pict;
2407         opkt.size = sizeof(AVPicture);
2408         opkt.flags |= AV_PKT_FLAG_KEY;
2409     }
2410
2411     write_frame(of->ctx, &opkt, ost);
2412     ost->st->codec->frame_number++;
2413     av_free_packet(&opkt);
2414 }
2415
2416 static void rate_emu_sleep(InputStream *ist)
2417 {
2418     if (input_files[ist->file_index]->rate_emu) {
2419         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2420         int64_t now = av_gettime() - ist->start;
2421         if (pts > now)
2422             usleep(pts - now);
2423     }
2424 }
2425
2426 static int guess_input_channel_layout(InputStream *ist)
2427 {
2428     AVCodecContext *dec = ist->st->codec;
2429
2430     if (!dec->channel_layout) {
2431         char layout_name[256];
2432
2433         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2434         if (!dec->channel_layout)
2435             return 0;
2436         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2437                                      dec->channels, dec->channel_layout);
2438         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2439                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2440     }
2441     return 1;
2442 }
2443
2444 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2445 {
2446     AVFrame *decoded_frame;
2447     AVCodecContext *avctx = ist->st->codec;
2448     int i, ret, resample_changed;
2449
2450     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2451         return AVERROR(ENOMEM);
2452     else
2453         avcodec_get_frame_defaults(ist->decoded_frame);
2454     decoded_frame = ist->decoded_frame;
2455
2456     update_benchmark(NULL);
2457     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2458     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2459     if (ret < 0) {
2460         return ret;
2461     }
2462     if (avctx->sample_rate <= 0) {
2463         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2464         return AVERROR_INVALIDDATA;
2465     }
2466
2467     if (!*got_output) {
2468         /* no audio frame */
2469         if (!pkt->size)
2470             for (i = 0; i < ist->nb_filters; i++)
2471                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2472                                      AV_BUFFERSRC_FLAG_NO_COPY);
2473         return ret;
2474     }
2475
2476     /* if the decoder provides a pts, use it instead of the last packet pts.
2477        the decoder could be delaying output by a packet or more. */
2478     if (decoded_frame->pts != AV_NOPTS_VALUE)
2479         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2480     else if (pkt->pts != AV_NOPTS_VALUE) {
2481         decoded_frame->pts = pkt->pts;
2482         pkt->pts           = AV_NOPTS_VALUE;
2483     }else
2484         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2485
2486
2487 #if 1
2488     /* increment next_dts to use for the case where the input stream does not
2489        have timestamps or there are multiple frames in the packet */
2490     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2491                      avctx->sample_rate;
2492     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2493                      avctx->sample_rate;
2494 #endif
2495
2496     rate_emu_sleep(ist);
2497
2498     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2499                        ist->resample_channels       != avctx->channels               ||
2500                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2501                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2502     if (resample_changed) {
2503         char layout1[64], layout2[64];
2504
2505         if (!guess_input_channel_layout(ist)) {
2506             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2507                    "layout for Input Stream #%d.%d\n", ist->file_index,
2508                    ist->st->index);
2509             exit_program(1);
2510         }
2511         decoded_frame->channel_layout = avctx->channel_layout;
2512
2513         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2514                                      ist->resample_channel_layout);
2515         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2516                                      decoded_frame->channel_layout);
2517
2518         av_log(NULL, AV_LOG_INFO,
2519                "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",
2520                ist->file_index, ist->st->index,
2521                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2522                ist->resample_channels, layout1,
2523                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2524                avctx->channels, layout2);
2525
2526         ist->resample_sample_fmt     = decoded_frame->format;
2527         ist->resample_sample_rate    = decoded_frame->sample_rate;
2528         ist->resample_channel_layout = decoded_frame->channel_layout;
2529         ist->resample_channels       = avctx->channels;
2530
2531         for (i = 0; i < nb_filtergraphs; i++)
2532             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2533                 configure_filtergraph(filtergraphs[i]) < 0) {
2534                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2535                 exit_program(1);
2536             }
2537     }
2538
2539     for (i = 0; i < ist->nb_filters; i++)
2540         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2541
2542     return ret;
2543 }
2544
2545 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
2546 {
2547     AVFrame *decoded_frame;
2548     void *buffer_to_free = NULL;
2549     int i, ret = 0, resample_changed;
2550     int64_t best_effort_timestamp;
2551     AVRational *frame_sample_aspect;
2552     float quality;
2553
2554     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2555         return AVERROR(ENOMEM);
2556     else
2557         avcodec_get_frame_defaults(ist->decoded_frame);
2558     decoded_frame = ist->decoded_frame;
2559     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2560
2561     update_benchmark(NULL);
2562     ret = avcodec_decode_video2(ist->st->codec,
2563                                 decoded_frame, got_output, pkt);
2564     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2565     if (ret < 0)
2566         return ret;
2567
2568     quality = same_quant ? decoded_frame->quality : 0;
2569     if (!*got_output) {
2570         /* no picture yet */
2571         if (!pkt->size)
2572             for (i = 0; i < ist->nb_filters; i++)
2573                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2574         return ret;
2575     }
2576
2577     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2578     if(best_effort_timestamp != AV_NOPTS_VALUE)
2579         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2580
2581     pkt->size = 0;
2582     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2583
2584     rate_emu_sleep(ist);
2585
2586     if (ist->st->sample_aspect_ratio.num)
2587         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2588
2589     resample_changed = ist->resample_width   != decoded_frame->width  ||
2590                        ist->resample_height  != decoded_frame->height ||
2591                        ist->resample_pix_fmt != decoded_frame->format;
2592     if (resample_changed) {
2593         av_log(NULL, AV_LOG_INFO,
2594                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2595                ist->file_index, ist->st->index,
2596                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2597                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2598
2599         ist->resample_width   = decoded_frame->width;
2600         ist->resample_height  = decoded_frame->height;
2601         ist->resample_pix_fmt = decoded_frame->format;
2602
2603         for (i = 0; i < nb_filtergraphs; i++)
2604             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2605                 configure_filtergraph(filtergraphs[i]) < 0) {
2606                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2607                 exit_program(1);
2608             }
2609     }
2610
2611     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2612     for (i = 0; i < ist->nb_filters; i++) {
2613         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2614                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2615                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2616         // XXX what an ugly hack
2617         if (ist->filters[i]->graph->nb_outputs == 1)
2618             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2619
2620         if (!frame_sample_aspect->num)
2621             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2622         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2623             FrameBuffer      *buf = decoded_frame->opaque;
2624             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2625                                         decoded_frame->data, decoded_frame->linesize,
2626                                         AV_PERM_READ | AV_PERM_PRESERVE,
2627                                         ist->st->codec->width, ist->st->codec->height,
2628                                         ist->st->codec->pix_fmt);
2629
2630             avfilter_copy_frame_props(fb, decoded_frame);
2631             fb->buf->priv           = buf;
2632             fb->buf->free           = filter_release_buffer;
2633
2634             av_assert0(buf->refcount>0);
2635             buf->refcount++;
2636             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2637                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2638                                  AV_BUFFERSRC_FLAG_NO_COPY);
2639         } else
2640         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2641             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2642             exit_program(1);
2643         }
2644
2645     }
2646
2647     av_free(buffer_to_free);
2648     return ret;
2649 }
2650
2651 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2652 {
2653     AVSubtitle subtitle;
2654     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2655                                           &subtitle, got_output, pkt);
2656     if (ret < 0)
2657         return ret;
2658     if (!*got_output)
2659         return ret;
2660
2661     rate_emu_sleep(ist);
2662
2663     for (i = 0; i < nb_output_streams; i++) {
2664         OutputStream *ost = output_streams[i];
2665
2666         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2667             continue;
2668
2669         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2670     }
2671
2672     avsubtitle_free(&subtitle);
2673     return ret;
2674 }
2675
2676 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2677 static int output_packet(InputStream *ist, const AVPacket *pkt)
2678 {
2679     int ret = 0, i;
2680     int got_output;
2681
2682     AVPacket avpkt;
2683     if (!ist->saw_first_ts) {
2684         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;
2685         ist->pts = 0;
2686         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2687             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2688             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2689         }
2690         ist->saw_first_ts = 1;
2691     }
2692
2693     if (ist->next_dts == AV_NOPTS_VALUE)
2694         ist->next_dts = ist->dts;
2695     if (ist->next_pts == AV_NOPTS_VALUE)
2696         ist->next_pts = ist->pts;
2697
2698     if (pkt == NULL) {
2699         /* EOF handling */
2700         av_init_packet(&avpkt);
2701         avpkt.data = NULL;
2702         avpkt.size = 0;
2703         goto handle_eof;
2704     } else {
2705         avpkt = *pkt;
2706     }
2707
2708     if (pkt->dts != AV_NOPTS_VALUE) {
2709         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2710         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2711             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2712     }
2713
2714     // while we have more to decode or while the decoder did output something on EOF
2715     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2716         int duration;
2717     handle_eof:
2718
2719         ist->pts = ist->next_pts;
2720         ist->dts = ist->next_dts;
2721
2722         if (avpkt.size && avpkt.size != pkt->size) {
2723             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2724                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2725             ist->showed_multi_packet_warning = 1;
2726         }
2727
2728         switch (ist->st->codec->codec_type) {
2729         case AVMEDIA_TYPE_AUDIO:
2730             ret = decode_audio    (ist, &avpkt, &got_output);
2731             break;
2732         case AVMEDIA_TYPE_VIDEO:
2733             ret = decode_video    (ist, &avpkt, &got_output);
2734             if (avpkt.duration) {
2735                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2736             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2737                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2738                 duration = ((int64_t)AV_TIME_BASE *
2739                                 ist->st->codec->time_base.num * ticks) /
2740                                 ist->st->codec->time_base.den;
2741             } else
2742                 duration = 0;
2743
2744             if(ist->dts != AV_NOPTS_VALUE && duration) {
2745                 ist->next_dts += duration;
2746             }else
2747                 ist->next_dts = AV_NOPTS_VALUE;
2748
2749             if (got_output)
2750                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2751             break;
2752         case AVMEDIA_TYPE_SUBTITLE:
2753             ret = transcode_subtitles(ist, &avpkt, &got_output);
2754             break;
2755         default:
2756             return -1;
2757         }
2758
2759         if (ret < 0)
2760             return ret;
2761
2762         avpkt.dts=
2763         avpkt.pts= AV_NOPTS_VALUE;
2764
2765         // touch data and size only if not EOF
2766         if (pkt) {
2767             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2768                 ret = avpkt.size;
2769             avpkt.data += ret;
2770             avpkt.size -= ret;
2771         }
2772         if (!got_output) {
2773             continue;
2774         }
2775     }
2776
2777     /* handle stream copy */
2778     if (!ist->decoding_needed) {
2779         rate_emu_sleep(ist);
2780         ist->dts = ist->next_dts;
2781         switch (ist->st->codec->codec_type) {
2782         case AVMEDIA_TYPE_AUDIO:
2783             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2784                              ist->st->codec->sample_rate;
2785             break;
2786         case AVMEDIA_TYPE_VIDEO:
2787             if (pkt->duration) {
2788                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2789             } else if(ist->st->codec->time_base.num != 0) {
2790                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2791                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2792                                   ist->st->codec->time_base.num * ticks) /
2793                                   ist->st->codec->time_base.den;
2794             }
2795             break;
2796         }
2797         ist->pts = ist->dts;
2798         ist->next_pts = ist->next_dts;
2799     }
2800     for (i = 0; pkt && i < nb_output_streams; i++) {
2801         OutputStream *ost = output_streams[i];
2802
2803         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2804             continue;
2805
2806         do_streamcopy(ist, ost, pkt);
2807     }
2808
2809     return 0;
2810 }
2811
2812 static void print_sdp(void)
2813 {
2814     char sdp[2048];
2815     int i;
2816     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2817
2818     if (!avc)
2819         exit_program(1);
2820     for (i = 0; i < nb_output_files; i++)
2821         avc[i] = output_files[i]->ctx;
2822
2823     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2824     printf("SDP:\n%s\n", sdp);
2825     fflush(stdout);
2826     av_freep(&avc);
2827 }
2828
2829 static int init_input_stream(int ist_index, char *error, int error_len)
2830 {
2831     InputStream *ist = input_streams[ist_index];
2832
2833     if (ist->decoding_needed) {
2834         AVCodec *codec = ist->dec;
2835         if (!codec) {
2836             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2837                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2838             return AVERROR(EINVAL);
2839         }
2840
2841         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2842         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2843             ist->st->codec->get_buffer     = codec_get_buffer;
2844             ist->st->codec->release_buffer = codec_release_buffer;
2845             ist->st->codec->opaque         = ist;
2846         }
2847
2848         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2849             av_dict_set(&ist->opts, "threads", "auto", 0);
2850         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2851             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2852                     ist->file_index, ist->st->index);
2853             return AVERROR(EINVAL);
2854         }
2855         assert_codec_experimental(ist->st->codec, 0);
2856         assert_avoptions(ist->opts);
2857     }
2858
2859     ist->next_pts = AV_NOPTS_VALUE;
2860     ist->next_dts = AV_NOPTS_VALUE;
2861     ist->is_start = 1;
2862
2863     return 0;
2864 }
2865
2866 static InputStream *get_input_stream(OutputStream *ost)
2867 {
2868     if (ost->source_index >= 0)
2869         return input_streams[ost->source_index];
2870
2871     if (ost->filter) {
2872         FilterGraph *fg = ost->filter->graph;
2873         int i;
2874
2875         for (i = 0; i < fg->nb_inputs; i++)
2876             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2877                 return fg->inputs[i]->ist;
2878     }
2879
2880     return NULL;
2881 }
2882
2883 static int transcode_init(void)
2884 {
2885     int ret = 0, i, j, k;
2886     AVFormatContext *oc;
2887     AVCodecContext *codec, *icodec;
2888     OutputStream *ost;
2889     InputStream *ist;
2890     char error[1024];
2891     int want_sdp = 1;
2892
2893     /* init framerate emulation */
2894     for (i = 0; i < nb_input_files; i++) {
2895         InputFile *ifile = input_files[i];
2896         if (ifile->rate_emu)
2897             for (j = 0; j < ifile->nb_streams; j++)
2898                 input_streams[j + ifile->ist_index]->start = av_gettime();
2899     }
2900
2901     /* output stream init */
2902     for (i = 0; i < nb_output_files; i++) {
2903         oc = output_files[i]->ctx;
2904         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2905             av_dump_format(oc, i, oc->filename, 1);
2906             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2907             return AVERROR(EINVAL);
2908         }
2909     }
2910
2911     /* init complex filtergraphs */
2912     for (i = 0; i < nb_filtergraphs; i++)
2913         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2914             return ret;
2915
2916     /* for each output stream, we compute the right encoding parameters */
2917     for (i = 0; i < nb_output_streams; i++) {
2918         ost = output_streams[i];
2919         oc  = output_files[ost->file_index]->ctx;
2920         ist = get_input_stream(ost);
2921
2922         if (ost->attachment_filename)
2923             continue;
2924
2925         codec  = ost->st->codec;
2926
2927         if (ist) {
2928             icodec = ist->st->codec;
2929
2930             ost->st->disposition          = ist->st->disposition;
2931             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2932             codec->chroma_sample_location = icodec->chroma_sample_location;
2933         }
2934
2935         if (ost->stream_copy) {
2936             uint64_t extra_size;
2937
2938             av_assert0(ist && !ost->filter);
2939
2940             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2941
2942             if (extra_size > INT_MAX) {
2943                 return AVERROR(EINVAL);
2944             }
2945
2946             /* if stream_copy is selected, no need to decode or encode */
2947             codec->codec_id   = icodec->codec_id;
2948             codec->codec_type = icodec->codec_type;
2949
2950             if (!codec->codec_tag) {
2951                 if (!oc->oformat->codec_tag ||
2952                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2953                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2954                     codec->codec_tag = icodec->codec_tag;
2955             }
2956
2957             codec->bit_rate       = icodec->bit_rate;
2958             codec->rc_max_rate    = icodec->rc_max_rate;
2959             codec->rc_buffer_size = icodec->rc_buffer_size;
2960             codec->field_order    = icodec->field_order;
2961             codec->extradata      = av_mallocz(extra_size);
2962             if (!codec->extradata) {
2963                 return AVERROR(ENOMEM);
2964             }
2965             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2966             codec->extradata_size= icodec->extradata_size;
2967             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2968
2969             codec->time_base = ist->st->time_base;
2970             /*
2971              * Avi is a special case here because it supports variable fps but
2972              * having the fps and timebase differe significantly adds quite some
2973              * overhead
2974              */
2975             if(!strcmp(oc->oformat->name, "avi")) {
2976                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2977                                  && av_q2d(ist->st->time_base) < 1.0/500
2978                     || copy_tb==0){
2979                     codec->time_base = icodec->time_base;
2980                     codec->time_base.num *= icodec->ticks_per_frame;
2981                     codec->time_base.den *= 2;
2982                     codec->ticks_per_frame = 2;
2983                 }
2984             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2985                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2986                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2987             ) {
2988                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2989                                 && av_q2d(ist->st->time_base) < 1.0/500
2990                    || copy_tb==0){
2991                     codec->time_base = icodec->time_base;
2992                     codec->time_base.num *= icodec->ticks_per_frame;
2993                 }
2994             }
2995             av_reduce(&codec->time_base.num, &codec->time_base.den,
2996                         codec->time_base.num, codec->time_base.den, INT_MAX);
2997
2998             switch (codec->codec_type) {
2999             case AVMEDIA_TYPE_AUDIO:
3000                 if (audio_volume != 256) {
3001                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3002                     exit_program(1);
3003                 }
3004                 codec->channel_layout     = icodec->channel_layout;
3005                 codec->sample_rate        = icodec->sample_rate;
3006                 codec->channels           = icodec->channels;
3007                 codec->frame_size         = icodec->frame_size;
3008                 codec->audio_service_type = icodec->audio_service_type;
3009                 codec->block_align        = icodec->block_align;
3010                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
3011                     codec->block_align= 0;
3012                 if(codec->codec_id == CODEC_ID_AC3)
3013                     codec->block_align= 0;
3014                 break;
3015             case AVMEDIA_TYPE_VIDEO:
3016                 codec->pix_fmt            = icodec->pix_fmt;
3017                 codec->width              = icodec->width;
3018                 codec->height             = icodec->height;
3019                 codec->has_b_frames       = icodec->has_b_frames;
3020                 if (!codec->sample_aspect_ratio.num) {
3021                     codec->sample_aspect_ratio   =
3022                     ost->st->sample_aspect_ratio =
3023                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3024                         ist->st->codec->sample_aspect_ratio.num ?
3025                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3026                 }
3027                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3028                 break;
3029             case AVMEDIA_TYPE_SUBTITLE:
3030                 codec->width  = icodec->width;
3031                 codec->height = icodec->height;
3032                 break;
3033             case AVMEDIA_TYPE_DATA:
3034             case AVMEDIA_TYPE_ATTACHMENT:
3035                 break;
3036             default:
3037                 abort();
3038             }
3039         } else {
3040             if (!ost->enc)
3041                 ost->enc = avcodec_find_encoder(codec->codec_id);
3042             if (!ost->enc) {
3043                 /* should only happen when a default codec is not present. */
3044                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3045                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3046                 ret = AVERROR(EINVAL);
3047                 goto dump_format;
3048             }
3049
3050             if (ist)
3051                 ist->decoding_needed = 1;
3052             ost->encoding_needed = 1;
3053
3054             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3055                 if (ist && !ost->frame_rate.num)
3056                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3057                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3058                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3059                     ost->frame_rate = ost->enc->supported_framerates[idx];
3060                 }
3061             }
3062
3063             if (!ost->filter &&
3064                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3065                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3066                     FilterGraph *fg;
3067                     fg = init_simple_filtergraph(ist, ost);
3068                     if (configure_filtergraph(fg)) {
3069                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3070                         exit(1);
3071                     }
3072             }
3073
3074             switch (codec->codec_type) {
3075             case AVMEDIA_TYPE_AUDIO:
3076                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3077                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3078                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3079                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3080                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3081                 break;
3082             case AVMEDIA_TYPE_VIDEO:
3083                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3084                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3085                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3086                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3087                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3088                 }
3089                 for (j = 0; j < ost->forced_kf_count; j++)
3090                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3091                                                          AV_TIME_BASE_Q,
3092                                                          codec->time_base);
3093
3094                 codec->width  = ost->filter->filter->inputs[0]->w;
3095                 codec->height = ost->filter->filter->inputs[0]->h;
3096                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3097                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3098                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3099                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3100                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3101
3102                 if (codec->width   != icodec->width  ||
3103                     codec->height  != icodec->height ||
3104                     codec->pix_fmt != icodec->pix_fmt) {
3105                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3106                 }
3107
3108                 break;
3109             case AVMEDIA_TYPE_SUBTITLE:
3110                 codec->time_base = (AVRational){1, 1000};
3111                 break;
3112             default:
3113                 abort();
3114                 break;
3115             }
3116             /* two pass mode */
3117             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3118                 char logfilename[1024];
3119                 FILE *f;
3120
3121                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3122                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3123                          i);
3124                 if (!strcmp(ost->enc->name, "libx264")) {
3125                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3126                 } else {
3127                     if (codec->flags & CODEC_FLAG_PASS2) {
3128                         char  *logbuffer;
3129                         size_t logbuffer_size;
3130                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3131                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3132                                    logfilename);
3133                             exit_program(1);
3134                         }
3135                         codec->stats_in = logbuffer;
3136                     }
3137                     if (codec->flags & CODEC_FLAG_PASS1) {
3138                         f = fopen(logfilename, "wb");
3139                         if (!f) {
3140                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3141                                 logfilename, strerror(errno));
3142                             exit_program(1);
3143                         }
3144                         ost->logfile = f;
3145                     }
3146                 }
3147             }
3148         }
3149     }
3150
3151     /* open each encoder */
3152     for (i = 0; i < nb_output_streams; i++) {
3153         ost = output_streams[i];
3154         if (ost->encoding_needed) {
3155             AVCodec      *codec = ost->enc;
3156             AVCodecContext *dec = NULL;
3157
3158             if ((ist = get_input_stream(ost)))
3159                 dec = ist->st->codec;
3160             if (dec && dec->subtitle_header) {
3161                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3162                 if (!ost->st->codec->subtitle_header) {
3163                     ret = AVERROR(ENOMEM);
3164                     goto dump_format;
3165                 }
3166                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3167                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3168             }
3169             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3170                 av_dict_set(&ost->opts, "threads", "auto", 0);
3171             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3172                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3173                         ost->file_index, ost->index);
3174                 ret = AVERROR(EINVAL);
3175                 goto dump_format;
3176             }
3177             assert_codec_experimental(ost->st->codec, 1);
3178             assert_avoptions(ost->opts);
3179             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3180                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3181                                              " It takes bits/s as argument, not kbits/s\n");
3182             extra_size += ost->st->codec->extradata_size;
3183
3184             if (ost->st->codec->me_threshold)
3185                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3186         }
3187     }
3188
3189     /* init input streams */
3190     for (i = 0; i < nb_input_streams; i++)
3191         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3192             goto dump_format;
3193
3194     /* discard unused programs */
3195     for (i = 0; i < nb_input_files; i++) {
3196         InputFile *ifile = input_files[i];
3197         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3198             AVProgram *p = ifile->ctx->programs[j];
3199             int discard  = AVDISCARD_ALL;
3200
3201             for (k = 0; k < p->nb_stream_indexes; k++)
3202                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3203                     discard = AVDISCARD_DEFAULT;
3204                     break;
3205                 }
3206             p->discard = discard;
3207         }
3208     }
3209
3210     /* open files and write file headers */
3211     for (i = 0; i < nb_output_files; i++) {
3212         oc = output_files[i]->ctx;
3213         oc->interrupt_callback = int_cb;
3214         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3215             char errbuf[128];
3216             const char *errbuf_ptr = errbuf;
3217             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3218                 errbuf_ptr = strerror(AVUNERROR(ret));
3219             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3220             ret = AVERROR(EINVAL);
3221             goto dump_format;
3222         }
3223 //         assert_avoptions(output_files[i]->opts);
3224         if (strcmp(oc->oformat->name, "rtp")) {
3225             want_sdp = 0;
3226         }
3227     }
3228
3229  dump_format:
3230     /* dump the file output parameters - cannot be done before in case
3231        of stream copy */
3232     for (i = 0; i < nb_output_files; i++) {
3233         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3234     }
3235
3236     /* dump the stream mapping */
3237     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3238     for (i = 0; i < nb_input_streams; i++) {
3239         ist = input_streams[i];
3240
3241         for (j = 0; j < ist->nb_filters; j++) {
3242             if (ist->filters[j]->graph->graph_desc) {
3243                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3244                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3245                        ist->filters[j]->name);
3246                 if (nb_filtergraphs > 1)
3247                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3248                 av_log(NULL, AV_LOG_INFO, "\n");
3249             }
3250         }
3251     }
3252
3253     for (i = 0; i < nb_output_streams; i++) {
3254         ost = output_streams[i];
3255
3256         if (ost->attachment_filename) {
3257             /* an attached file */
3258             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3259                    ost->attachment_filename, ost->file_index, ost->index);
3260             continue;
3261         }
3262
3263         if (ost->filter && ost->filter->graph->graph_desc) {
3264             /* output from a complex graph */
3265             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3266             if (nb_filtergraphs > 1)
3267                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3268
3269             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3270                    ost->index, ost->enc ? ost->enc->name : "?");
3271             continue;
3272         }
3273
3274         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3275                input_streams[ost->source_index]->file_index,
3276                input_streams[ost->source_index]->st->index,
3277                ost->file_index,
3278                ost->index);
3279         if (ost->sync_ist != input_streams[ost->source_index])
3280             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3281                    ost->sync_ist->file_index,
3282                    ost->sync_ist->st->index);
3283         if (ost->stream_copy)
3284             av_log(NULL, AV_LOG_INFO, " (copy)");
3285         else
3286             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3287                    input_streams[ost->source_index]->dec->name : "?",
3288                    ost->enc ? ost->enc->name : "?");
3289         av_log(NULL, AV_LOG_INFO, "\n");
3290     }
3291
3292     if (ret) {
3293         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3294         return ret;
3295     }
3296
3297     if (want_sdp) {
3298         print_sdp();
3299     }
3300
3301     return 0;
3302 }
3303
3304 /*
3305  * The following code is the main loop of the file converter
3306  */
3307 static int transcode(void)
3308 {
3309     int ret, i;
3310     AVFormatContext *is, *os;
3311     OutputStream *ost;
3312     InputStream *ist;
3313     uint8_t *no_packet;
3314     int no_packet_count = 0;
3315     int64_t timer_start;
3316     int key;
3317
3318     if (!(no_packet = av_mallocz(nb_input_files)))
3319         exit_program(1);
3320
3321     ret = transcode_init();
3322     if (ret < 0)
3323         goto fail;
3324
3325     if (!using_stdin) {
3326         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3327     }
3328
3329     timer_start = av_gettime();
3330
3331     for (; received_sigterm == 0;) {
3332         int file_index, ist_index, past_recording_time = 1;
3333         AVPacket pkt;
3334         int64_t ipts_min;
3335         int64_t cur_time= av_gettime();
3336
3337         ipts_min = INT64_MAX;
3338         /* if 'q' pressed, exits */
3339         if (!using_stdin) {
3340             static int64_t last_time;
3341             if (received_nb_signals)
3342                 break;
3343             /* read_key() returns 0 on EOF */
3344             if(cur_time - last_time >= 100000 && !run_as_daemon){
3345                 key =  read_key();
3346                 last_time = cur_time;
3347             }else
3348                 key = -1;
3349             if (key == 'q')
3350                 break;
3351             if (key == '+') av_log_set_level(av_log_get_level()+10);
3352             if (key == '-') av_log_set_level(av_log_get_level()-10);
3353             if (key == 's') qp_hist     ^= 1;
3354             if (key == 'h'){
3355                 if (do_hex_dump){
3356                     do_hex_dump = do_pkt_dump = 0;
3357                 } else if(do_pkt_dump){
3358                     do_hex_dump = 1;
3359                 } else
3360                     do_pkt_dump = 1;
3361                 av_log_set_level(AV_LOG_DEBUG);
3362             }
3363             if (key == 'c' || key == 'C'){
3364                 char buf[4096], target[64], command[256], arg[256] = {0};
3365                 double time;
3366                 int k, n = 0;
3367                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3368                 i = 0;
3369                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3370                     if (k > 0)
3371                         buf[i++] = k;
3372                 buf[i] = 0;
3373                 if (k > 0 &&
3374                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3375                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3376                            target, time, command, arg);
3377                     for (i = 0; i < nb_filtergraphs; i++) {
3378                         FilterGraph *fg = filtergraphs[i];
3379                         if (fg->graph) {
3380                             if (time < 0) {
3381                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3382                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3383                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3384                             } else {
3385                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3386                             }
3387                         }
3388                     }
3389                 } else {
3390                     av_log(NULL, AV_LOG_ERROR,
3391                            "Parse error, at least 3 arguments were expected, "
3392                            "only %d given in string '%s'\n", n, buf);
3393                 }
3394             }
3395             if (key == 'd' || key == 'D'){
3396                 int debug=0;
3397                 if(key == 'D') {
3398                     debug = input_streams[0]->st->codec->debug<<1;
3399                     if(!debug) debug = 1;
3400                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3401                         debug += debug;
3402                 }else
3403                     if(scanf("%d", &debug)!=1)
3404                         fprintf(stderr,"error parsing debug value\n");
3405                 for(i=0;i<nb_input_streams;i++) {
3406                     input_streams[i]->st->codec->debug = debug;
3407                 }
3408                 for(i=0;i<nb_output_streams;i++) {
3409                     ost = output_streams[i];
3410                     ost->st->codec->debug = debug;
3411                 }
3412                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3413                 fprintf(stderr,"debug=%d\n", debug);
3414             }
3415             if (key == '?'){
3416                 fprintf(stderr, "key    function\n"
3417                                 "?      show this help\n"
3418                                 "+      increase verbosity\n"
3419                                 "-      decrease verbosity\n"
3420                                 "c      Send command to filtergraph\n"
3421                                 "D      cycle through available debug modes\n"
3422                                 "h      dump packets/hex press to cycle through the 3 states\n"
3423                                 "q      quit\n"
3424                                 "s      Show QP histogram\n"
3425                 );
3426             }
3427         }
3428
3429         /* check if there's any stream where output is still needed */
3430         for (i = 0; i < nb_output_streams; i++) {
3431             OutputFile *of;
3432             ost = output_streams[i];
3433             of  = output_files[ost->file_index];
3434             os  = output_files[ost->file_index]->ctx;
3435             if (ost->is_past_recording_time ||
3436                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3437                 continue;
3438             if (ost->frame_number >= ost->max_frames) {
3439                 int j;
3440                 for (j = 0; j < of->ctx->nb_streams; j++)
3441                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3442                 continue;
3443             }
3444             past_recording_time = 0;
3445         }
3446         if (past_recording_time)
3447             break;
3448
3449         /* select the stream that we must read now by looking at the
3450            smallest output pts */
3451         file_index = -1;
3452         for (i = 0; i < nb_input_streams; i++) {
3453             int64_t ipts;
3454             ist = input_streams[i];
3455             ipts = ist->pts;
3456             if (ist->discard || no_packet[ist->file_index])
3457                 continue;
3458             if (!input_files[ist->file_index]->eof_reached) {
3459                 if (ipts < ipts_min) {
3460                     ipts_min = ipts;
3461                     file_index = ist->file_index;
3462                 }
3463             }
3464         }
3465         /* if none, if is finished */
3466         if (file_index < 0) {
3467             if (no_packet_count) {
3468                 no_packet_count = 0;
3469                 memset(no_packet, 0, nb_input_files);
3470                 usleep(10000);
3471                 continue;
3472             }
3473             break;
3474         }
3475
3476         /* read a frame from it and output it in the fifo */
3477         is  = input_files[file_index]->ctx;
3478         ret = av_read_frame(is, &pkt);
3479         if (ret == AVERROR(EAGAIN)) {
3480             no_packet[file_index] = 1;
3481             no_packet_count++;
3482             continue;
3483         }
3484         if (ret < 0) {
3485             input_files[file_index]->eof_reached = 1;
3486
3487             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3488                 ist = input_streams[input_files[file_index]->ist_index + i];
3489                 if (ist->decoding_needed)
3490                     output_packet(ist, NULL);
3491             }
3492
3493             if (opt_shortest)
3494                 break;
3495             else
3496                 continue;
3497         }
3498
3499         no_packet_count = 0;
3500         memset(no_packet, 0, nb_input_files);
3501
3502         if (do_pkt_dump) {
3503             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3504                              is->streams[pkt.stream_index]);
3505         }
3506         /* the following test is needed in case new streams appear
3507            dynamically in stream : we ignore them */
3508         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3509             goto discard_packet;
3510         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3511         ist = input_streams[ist_index];
3512         if (ist->discard)
3513             goto discard_packet;
3514
3515         if (pkt.dts != AV_NOPTS_VALUE)
3516             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3517         if (pkt.pts != AV_NOPTS_VALUE)
3518             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3519
3520         if (pkt.pts != AV_NOPTS_VALUE)
3521             pkt.pts *= ist->ts_scale;
3522         if (pkt.dts != AV_NOPTS_VALUE)
3523             pkt.dts *= ist->ts_scale;
3524
3525         if (debug_ts) {
3526             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3527                     "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",
3528                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3529                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3530                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3531                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3532                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3533                     input_files[ist->file_index]->ts_offset);
3534         }
3535
3536         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3537             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3538             int64_t delta   = pkt_dts - ist->next_dts;
3539             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3540             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3541                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3542                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3543                 pkt_dts+1<ist->pts){
3544                 input_files[ist->file_index]->ts_offset -= delta;
3545                 av_log(NULL, AV_LOG_DEBUG,
3546                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3547                        delta, input_files[ist->file_index]->ts_offset);
3548                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3549                 if (pkt.pts != AV_NOPTS_VALUE)
3550                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3551             }
3552             } else {
3553                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3554                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3555                      pkt_dts+1<ist->pts){
3556                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3557                     pkt.dts = AV_NOPTS_VALUE;
3558                 }
3559                 if (pkt.pts != AV_NOPTS_VALUE){
3560                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3561                     delta   = pkt_pts - ist->next_dts;
3562                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3563                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3564                         pkt_pts+1<ist->pts) {
3565                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3566                         pkt.pts = AV_NOPTS_VALUE;
3567                     }
3568                 }
3569             }
3570         }
3571
3572         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3573         if (output_packet(ist, &pkt) < 0 ||
3574             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3575             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3576                    ist->file_index, ist->st->index);
3577             if (exit_on_error)
3578                 exit_program(1);
3579             av_free_packet(&pkt);
3580             continue;
3581         }
3582
3583     discard_packet:
3584         av_free_packet(&pkt);
3585
3586         /* dump report by using the output first video and audio streams */
3587         print_report(0, timer_start, cur_time);
3588     }
3589
3590     /* at the end of stream, we must flush the decoder buffers */
3591     for (i = 0; i < nb_input_streams; i++) {
3592         ist = input_streams[i];
3593         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3594             output_packet(ist, NULL);
3595         }
3596     }
3597     poll_filters();
3598     flush_encoders();
3599
3600     term_exit();
3601
3602     /* write the trailer if needed and close file */
3603     for (i = 0; i < nb_output_files; i++) {
3604         os = output_files[i]->ctx;
3605         av_write_trailer(os);
3606     }
3607
3608     /* dump report by using the first video and audio streams */
3609     print_report(1, timer_start, av_gettime());
3610
3611     /* close each encoder */
3612     for (i = 0; i < nb_output_streams; i++) {
3613         ost = output_streams[i];
3614         if (ost->encoding_needed) {
3615             av_freep(&ost->st->codec->stats_in);
3616             avcodec_close(ost->st->codec);
3617         }
3618     }
3619
3620     /* close each decoder */
3621     for (i = 0; i < nb_input_streams; i++) {
3622         ist = input_streams[i];
3623         if (ist->decoding_needed) {
3624             avcodec_close(ist->st->codec);
3625         }
3626     }
3627
3628     /* finished ! */
3629     ret = 0;
3630
3631  fail:
3632     av_freep(&no_packet);
3633
3634     if (output_streams) {
3635         for (i = 0; i < nb_output_streams; i++) {
3636             ost = output_streams[i];
3637             if (ost) {
3638                 if (ost->stream_copy)
3639                     av_freep(&ost->st->codec->extradata);
3640                 if (ost->logfile) {
3641                     fclose(ost->logfile);
3642                     ost->logfile = NULL;
3643                 }
3644                 av_freep(&ost->st->codec->subtitle_header);
3645                 av_free(ost->forced_kf_pts);
3646                 av_dict_free(&ost->opts);
3647             }
3648         }
3649     }
3650     return ret;
3651 }
3652
3653 static int opt_frame_crop(const char *opt, const char *arg)
3654 {
3655     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3656     return AVERROR(EINVAL);
3657 }
3658
3659 static int opt_pad(const char *opt, const char *arg)
3660 {
3661     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3662     return -1;
3663 }
3664
3665 static int opt_video_channel(const char *opt, const char *arg)
3666 {
3667     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3668     return opt_default("channel", arg);
3669 }
3670
3671 static int opt_video_standard(const char *opt, const char *arg)
3672 {
3673     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3674     return opt_default("standard", arg);
3675 }
3676
3677 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3678 {
3679     audio_codec_name = arg;
3680     return parse_option(o, "codec:a", arg, options);
3681 }
3682
3683 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3684 {
3685     video_codec_name = arg;
3686     return parse_option(o, "codec:v", arg, options);
3687 }
3688
3689 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3690 {
3691     subtitle_codec_name = arg;
3692     return parse_option(o, "codec:s", arg, options);
3693 }
3694
3695 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3696 {
3697     return parse_option(o, "codec:d", arg, options);
3698 }
3699
3700 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3701 {
3702     StreamMap *m = NULL;
3703     int i, negative = 0, file_idx;
3704     int sync_file_idx = -1, sync_stream_idx = 0;
3705     char *p, *sync;
3706     char *map;
3707
3708     if (*arg == '-') {
3709         negative = 1;
3710         arg++;
3711     }
3712     map = av_strdup(arg);
3713
3714     /* parse sync stream first, just pick first matching stream */
3715     if (sync = strchr(map, ',')) {
3716         *sync = 0;
3717         sync_file_idx = strtol(sync + 1, &sync, 0);
3718         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3719             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3720             exit_program(1);
3721         }
3722         if (*sync)
3723             sync++;
3724         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3725             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3726                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3727                 sync_stream_idx = i;
3728                 break;
3729             }
3730         if (i == input_files[sync_file_idx]->nb_streams) {
3731             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3732                                        "match any streams.\n", arg);
3733             exit_program(1);
3734         }
3735     }
3736
3737
3738     if (map[0] == '[') {
3739         /* this mapping refers to lavfi output */
3740         const char *c = map + 1;
3741         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3742                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3743         m = &o->stream_maps[o->nb_stream_maps - 1];
3744         m->linklabel = av_get_token(&c, "]");
3745         if (!m->linklabel) {
3746             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3747             exit_program(1);
3748         }
3749     } else {
3750         file_idx = strtol(map, &p, 0);
3751         if (file_idx >= nb_input_files || file_idx < 0) {
3752             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3753             exit_program(1);
3754         }
3755         if (negative)
3756             /* disable some already defined maps */
3757             for (i = 0; i < o->nb_stream_maps; i++) {
3758                 m = &o->stream_maps[i];
3759                 if (file_idx == m->file_index &&
3760                     check_stream_specifier(input_files[m->file_index]->ctx,
3761                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3762                                            *p == ':' ? p + 1 : p) > 0)
3763                     m->disabled = 1;
3764             }
3765         else
3766             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3767                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3768                             *p == ':' ? p + 1 : p) <= 0)
3769                     continue;
3770                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3771                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3772                 m = &o->stream_maps[o->nb_stream_maps - 1];
3773
3774                 m->file_index   = file_idx;
3775                 m->stream_index = i;
3776
3777                 if (sync_file_idx >= 0) {
3778                     m->sync_file_index   = sync_file_idx;
3779                     m->sync_stream_index = sync_stream_idx;
3780                 } else {
3781                     m->sync_file_index   = file_idx;
3782                     m->sync_stream_index = i;
3783                 }
3784             }
3785     }
3786
3787     if (!m) {
3788         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3789         exit_program(1);
3790     }
3791
3792     av_freep(&map);
3793     return 0;
3794 }
3795
3796 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3797 {
3798     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3799                                 &o->nb_attachments, o->nb_attachments + 1);
3800     o->attachments[o->nb_attachments - 1] = arg;
3801     return 0;
3802 }
3803
3804 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3805 {
3806     int n;
3807     AVStream *st;
3808     AudioChannelMap *m;
3809
3810     o->audio_channel_maps =
3811         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3812                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3813     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3814
3815     /* muted channel syntax */
3816     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3817     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3818         m->file_idx = m->stream_idx = -1;
3819         if (n == 1)
3820             m->ofile_idx = m->ostream_idx = -1;
3821         return 0;
3822     }
3823
3824     /* normal syntax */
3825     n = sscanf(arg, "%d.%d.%d:%d.%d",
3826                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3827                &m->ofile_idx, &m->ostream_idx);
3828
3829     if (n != 3 && n != 5) {
3830         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3831                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3832         exit_program(1);
3833     }
3834
3835     if (n != 5) // only file.stream.channel specified
3836         m->ofile_idx = m->ostream_idx = -1;
3837
3838     /* check input */
3839     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3840         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3841                m->file_idx);
3842         exit_program(1);
3843     }
3844     if (m->stream_idx < 0 ||
3845         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3846         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3847                m->file_idx, m->stream_idx);
3848         exit_program(1);
3849     }
3850     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3851     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3852         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3853                m->file_idx, m->stream_idx);
3854         exit_program(1);
3855     }
3856     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3857         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3858                m->file_idx, m->stream_idx, m->channel_idx);
3859         exit_program(1);
3860     }
3861     return 0;
3862 }
3863
3864 /**
3865  * Parse a metadata specifier in arg.
3866  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3867  * @param index for type c/p, chapter/program index is written here
3868  * @param stream_spec for type s, the stream specifier is written here
3869  */
3870 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3871 {
3872     if (*arg) {
3873         *type = *arg;
3874         switch (*arg) {
3875         case 'g':
3876             break;
3877         case 's':
3878             if (*(++arg) && *arg != ':') {
3879                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3880                 exit_program(1);
3881             }
3882             *stream_spec = *arg == ':' ? arg + 1 : "";
3883             break;
3884         case 'c':
3885         case 'p':
3886             if (*(++arg) == ':')
3887                 *index = strtol(++arg, NULL, 0);
3888             break;
3889         default:
3890             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3891             exit_program(1);
3892         }
3893     } else
3894         *type = 'g';
3895 }
3896
3897 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3898 {
3899     AVDictionary **meta_in = NULL;
3900     AVDictionary **meta_out = NULL;
3901     int i, ret = 0;
3902     char type_in, type_out;
3903     const char *istream_spec = NULL, *ostream_spec = NULL;
3904     int idx_in = 0, idx_out = 0;
3905
3906     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3907     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3908
3909     if (!ic) {
3910         if (type_out == 'g' || !*outspec)
3911             o->metadata_global_manual = 1;
3912         if (type_out == 's' || !*outspec)
3913             o->metadata_streams_manual = 1;
3914         if (type_out == 'c' || !*outspec)
3915             o->metadata_chapters_manual = 1;
3916         return 0;
3917     }
3918
3919     if (type_in == 'g' || type_out == 'g')
3920         o->metadata_global_manual = 1;
3921     if (type_in == 's' || type_out == 's')
3922         o->metadata_streams_manual = 1;
3923     if (type_in == 'c' || type_out == 'c')
3924         o->metadata_chapters_manual = 1;
3925
3926 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3927     if ((index) < 0 || (index) >= (nb_elems)) {\
3928         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3929                 (desc), (index));\
3930         exit_program(1);\
3931     }
3932
3933 #define SET_DICT(type, meta, context, index)\
3934         switch (type) {\
3935         case 'g':\
3936             meta = &context->metadata;\
3937             break;\
3938         case 'c':\
3939             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3940             meta = &context->chapters[index]->metadata;\
3941             break;\
3942         case 'p':\
3943             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3944             meta = &context->programs[index]->metadata;\
3945             break;\
3946         }\
3947
3948     SET_DICT(type_in, meta_in, ic, idx_in);
3949     SET_DICT(type_out, meta_out, oc, idx_out);
3950
3951     /* for input streams choose first matching stream */
3952     if (type_in == 's') {
3953         for (i = 0; i < ic->nb_streams; i++) {
3954             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3955                 meta_in = &ic->streams[i]->metadata;
3956                 break;
3957             } else if (ret < 0)
3958                 exit_program(1);
3959         }
3960         if (!meta_in) {
3961             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3962             exit_program(1);
3963         }
3964     }
3965
3966     if (type_out == 's') {
3967         for (i = 0; i < oc->nb_streams; i++) {
3968             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3969                 meta_out = &oc->streams[i]->metadata;
3970                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3971             } else if (ret < 0)
3972                 exit_program(1);
3973         }
3974     } else
3975         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3976
3977     return 0;
3978 }
3979
3980 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3981 {
3982     char buf[128];
3983     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3984     struct tm time = *gmtime((time_t*)&recording_timestamp);
3985     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3986     parse_option(o, "metadata", buf, options);
3987
3988     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3989                                  "tag instead.\n", opt);
3990     return 0;
3991 }
3992
3993 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3994 {
3995     const char *codec_string = encoder ? "encoder" : "decoder";
3996     AVCodec *codec;
3997
3998     codec = encoder ?
3999         avcodec_find_encoder_by_name(name) :
4000         avcodec_find_decoder_by_name(name);
4001     if (!codec) {
4002         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4003         exit_program(1);
4004     }
4005     if (codec->type != type) {
4006         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4007         exit_program(1);
4008     }
4009     return codec;
4010 }
4011
4012 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4013 {
4014     char *codec_name = NULL;
4015
4016     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4017     if (codec_name) {
4018         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4019         st->codec->codec_id = codec->id;
4020         return codec;
4021     } else
4022         return avcodec_find_decoder(st->codec->codec_id);
4023 }
4024
4025 /**
4026  * Add all the streams from the given input file to the global
4027  * list of input streams.
4028  */
4029 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4030 {
4031     int i;
4032     char *next, *codec_tag = NULL;
4033
4034     for (i = 0; i < ic->nb_streams; i++) {
4035         AVStream *st = ic->streams[i];
4036         AVCodecContext *dec = st->codec;
4037         InputStream *ist = av_mallocz(sizeof(*ist));
4038         char *framerate = NULL;
4039
4040         if (!ist)
4041             exit_program(1);
4042
4043         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4044         input_streams[nb_input_streams - 1] = ist;
4045
4046         ist->st = st;
4047         ist->file_index = nb_input_files;
4048         ist->discard = 1;
4049         st->discard  = AVDISCARD_ALL;
4050         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4051
4052         ist->ts_scale = 1.0;
4053         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4054
4055         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4056         if (codec_tag) {
4057             uint32_t tag = strtol(codec_tag, &next, 0);
4058             if (*next)
4059                 tag = AV_RL32(codec_tag);
4060             st->codec->codec_tag = tag;
4061         }
4062
4063         ist->dec = choose_decoder(o, ic, st);
4064
4065         switch (dec->codec_type) {
4066         case AVMEDIA_TYPE_VIDEO:
4067             if(!ist->dec)
4068                 ist->dec = avcodec_find_decoder(dec->codec_id);
4069             if (dec->lowres) {
4070                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4071             }
4072
4073             ist->resample_height  = dec->height;
4074             ist->resample_width   = dec->width;
4075             ist->resample_pix_fmt = dec->pix_fmt;
4076
4077             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
4078             if (framerate && av_parse_video_rate(&ist->framerate,
4079                                                  framerate) < 0) {
4080                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
4081                        framerate);
4082                 exit_program(1);
4083             }
4084
4085             break;
4086         case AVMEDIA_TYPE_AUDIO:
4087             guess_input_channel_layout(ist);
4088
4089             ist->resample_sample_fmt     = dec->sample_fmt;
4090             ist->resample_sample_rate    = dec->sample_rate;
4091             ist->resample_channels       = dec->channels;
4092             ist->resample_channel_layout = dec->channel_layout;
4093
4094             break;
4095         case AVMEDIA_TYPE_DATA:
4096         case AVMEDIA_TYPE_SUBTITLE:
4097             if(!ist->dec)
4098                 ist->dec = avcodec_find_decoder(dec->codec_id);
4099             break;
4100         case AVMEDIA_TYPE_ATTACHMENT:
4101         case AVMEDIA_TYPE_UNKNOWN:
4102             break;
4103         default:
4104             abort();
4105         }
4106     }
4107 }
4108
4109 static void assert_file_overwrite(const char *filename)
4110 {
4111     if ((!file_overwrite || no_file_overwrite) &&
4112         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4113          av_strstart(filename, "file:", NULL))) {
4114         if (avio_check(filename, 0) == 0) {
4115             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4116                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4117                 fflush(stderr);
4118                 term_exit();
4119                 signal(SIGINT, SIG_DFL);
4120                 if (!read_yesno()) {
4121                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4122                     exit_program(1);
4123                 }
4124                 term_init();
4125             }
4126             else {
4127                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4128                 exit_program(1);
4129             }
4130         }
4131     }
4132 }
4133
4134 static void dump_attachment(AVStream *st, const char *filename)
4135 {
4136     int ret;
4137     AVIOContext *out = NULL;
4138     AVDictionaryEntry *e;
4139
4140     if (!st->codec->extradata_size) {
4141         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4142                nb_input_files - 1, st->index);
4143         return;
4144     }
4145     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4146         filename = e->value;
4147     if (!*filename) {
4148         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4149                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4150         exit_program(1);
4151     }
4152
4153     assert_file_overwrite(filename);
4154
4155     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4156         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4157                filename);
4158         exit_program(1);
4159     }
4160
4161     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4162     avio_flush(out);
4163     avio_close(out);
4164 }
4165
4166 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4167 {
4168     AVFormatContext *ic;
4169     AVInputFormat *file_iformat = NULL;
4170     int err, i, ret;
4171     int64_t timestamp;
4172     uint8_t buf[128];
4173     AVDictionary **opts;
4174     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4175
4176     if (o->format) {
4177         if (!(file_iformat = av_find_input_format(o->format))) {
4178             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4179             exit_program(1);
4180         }
4181     }
4182
4183     if (!strcmp(filename, "-"))
4184         filename = "pipe:";
4185
4186     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4187                     !strcmp(filename, "/dev/stdin");
4188
4189     /* get default parameters from command line */
4190     ic = avformat_alloc_context();
4191     if (!ic) {
4192         print_error(filename, AVERROR(ENOMEM));
4193         exit_program(1);
4194     }
4195     if (o->nb_audio_sample_rate) {
4196         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4197         av_dict_set(&format_opts, "sample_rate", buf, 0);
4198     }
4199     if (o->nb_audio_channels) {
4200         /* because we set audio_channels based on both the "ac" and
4201          * "channel_layout" options, we need to check that the specified
4202          * demuxer actually has the "channels" option before setting it */
4203         if (file_iformat && file_iformat->priv_class &&
4204             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4205                         AV_OPT_SEARCH_FAKE_OBJ)) {
4206             snprintf(buf, sizeof(buf), "%d",
4207                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4208             av_dict_set(&format_opts, "channels", buf, 0);
4209         }
4210     }
4211     if (o->nb_frame_rates) {
4212         /* set the format-level framerate option;
4213          * this is important for video grabbers, e.g. x11 */
4214         if (file_iformat && file_iformat->priv_class &&
4215             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4216                         AV_OPT_SEARCH_FAKE_OBJ)) {
4217             av_dict_set(&format_opts, "framerate",
4218                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4219         }
4220     }
4221     if (o->nb_frame_sizes) {
4222         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4223     }
4224     if (o->nb_frame_pix_fmts)
4225         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4226
4227     ic->video_codec_id   = video_codec_name ?
4228         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4229     ic->audio_codec_id   = audio_codec_name ?
4230         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4231     ic->subtitle_codec_id= subtitle_codec_name ?
4232         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4233     ic->flags |= AVFMT_FLAG_NONBLOCK;
4234     ic->interrupt_callback = int_cb;
4235
4236     /* open the input file with generic avformat function */
4237     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4238     if (err < 0) {
4239         print_error(filename, err);
4240         exit_program(1);
4241     }
4242     assert_avoptions(format_opts);
4243
4244     /* apply forced codec ids */
4245     for (i = 0; i < ic->nb_streams; i++)
4246         choose_decoder(o, ic, ic->streams[i]);
4247
4248     /* Set AVCodecContext options for avformat_find_stream_info */
4249     opts = setup_find_stream_info_opts(ic, codec_opts);
4250     orig_nb_streams = ic->nb_streams;
4251
4252     /* If not enough info to get the stream parameters, we decode the
4253        first frames to get it. (used in mpeg case for example) */
4254     ret = avformat_find_stream_info(ic, opts);
4255     if (ret < 0) {
4256         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4257         avformat_close_input(&ic);