ffmpeg: remove two unused variables.
[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     int top_field_first;
241
242     int resample_height;
243     int resample_width;
244     int resample_pix_fmt;
245
246     int      resample_sample_fmt;
247     int      resample_sample_rate;
248     int      resample_channels;
249     uint64_t resample_channel_layout;
250
251     /* a pool of free buffers for decoded data */
252     FrameBuffer *buffer_pool;
253     int dr1;
254
255     /* decoded data from this stream goes into all those filters
256      * currently video and audio only */
257     InputFilter **filters;
258     int        nb_filters;
259 } InputStream;
260
261 typedef struct InputFile {
262     AVFormatContext *ctx;
263     int eof_reached;      /* true if eof reached */
264     int ist_index;        /* index of first stream in input_streams */
265     int buffer_size;      /* current total buffer size */
266     int64_t ts_offset;
267     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
268                              from ctx.nb_streams if new streams appear during av_read_frame() */
269     int rate_emu;
270 } InputFile;
271
272 typedef struct OutputStream {
273     int file_index;          /* file index */
274     int index;               /* stream index in the output file */
275     int source_index;        /* InputStream index */
276     AVStream *st;            /* stream in the output file */
277     int encoding_needed;     /* true if encoding needed for this stream */
278     int frame_number;
279     /* input pts and corresponding output pts
280        for A/V sync */
281     struct InputStream *sync_ist; /* input stream to sync against */
282     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
283     /* pts of the first frame encoded for this stream, used for limiting
284      * recording time */
285     int64_t first_pts;
286     AVBitStreamFilterContext *bitstream_filters;
287     AVCodec *enc;
288     int64_t max_frames;
289     AVFrame *filtered_frame;
290
291     /* video only */
292     AVRational frame_rate;
293     int force_fps;
294     int top_field_first;
295
296     float frame_aspect_ratio;
297     float last_quality;
298
299     /* forced key frames */
300     int64_t *forced_kf_pts;
301     int forced_kf_count;
302     int forced_kf_index;
303
304     /* audio only */
305     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
306     int audio_channels_mapped;           /* number of channels in audio_channels_map */
307
308     FILE *logfile;
309
310     OutputFilter *filter;
311     char *avfilter;
312
313     int64_t sws_flags;
314     int64_t swr_dither_method;
315     double swr_dither_scale;
316     AVDictionary *opts;
317     int is_past_recording_time;
318     int stream_copy;
319     const char *attachment_filename;
320     int copy_initial_nonkeyframes;
321
322     int keep_pix_fmt;
323 } OutputStream;
324
325
326 #if HAVE_TERMIOS_H
327
328 /* init terminal so that we can grab keys */
329 static struct termios oldtty;
330 static int restore_tty;
331 #endif
332
333 typedef struct OutputFile {
334     AVFormatContext *ctx;
335     AVDictionary *opts;
336     int ost_index;       /* index of the first stream in output_streams */
337     int64_t recording_time; /* desired length of the resulting file in microseconds */
338     int64_t start_time;     /* start time in microseconds */
339     uint64_t limit_filesize; /* filesize limit expressed in bytes */
340 } OutputFile;
341
342 static InputStream **input_streams = NULL;
343 static int        nb_input_streams = 0;
344 static InputFile   **input_files   = NULL;
345 static int        nb_input_files   = 0;
346
347 static OutputStream **output_streams = NULL;
348 static int         nb_output_streams = 0;
349 static OutputFile   **output_files   = NULL;
350 static int         nb_output_files   = 0;
351
352 static FilterGraph **filtergraphs;
353 int               nb_filtergraphs;
354
355 typedef struct OptionsContext {
356     /* input/output options */
357     int64_t start_time;
358     const char *format;
359
360     SpecifierOpt *codec_names;
361     int        nb_codec_names;
362     SpecifierOpt *audio_channels;
363     int        nb_audio_channels;
364     SpecifierOpt *audio_sample_rate;
365     int        nb_audio_sample_rate;
366     SpecifierOpt *frame_rates;
367     int        nb_frame_rates;
368     SpecifierOpt *frame_sizes;
369     int        nb_frame_sizes;
370     SpecifierOpt *frame_pix_fmts;
371     int        nb_frame_pix_fmts;
372
373     /* input options */
374     int64_t input_ts_offset;
375     int rate_emu;
376
377     SpecifierOpt *ts_scale;
378     int        nb_ts_scale;
379     SpecifierOpt *dump_attachment;
380     int        nb_dump_attachment;
381
382     /* output options */
383     StreamMap *stream_maps;
384     int     nb_stream_maps;
385     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
386     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
387     int metadata_global_manual;
388     int metadata_streams_manual;
389     int metadata_chapters_manual;
390     const char **attachments;
391     int       nb_attachments;
392
393     int chapters_input_file;
394
395     int64_t recording_time;
396     uint64_t limit_filesize;
397     float mux_preload;
398     float mux_max_delay;
399
400     int video_disable;
401     int audio_disable;
402     int subtitle_disable;
403     int data_disable;
404
405     /* indexed by output file stream index */
406     int   *streamid_map;
407     int nb_streamid_map;
408
409     SpecifierOpt *metadata;
410     int        nb_metadata;
411     SpecifierOpt *max_frames;
412     int        nb_max_frames;
413     SpecifierOpt *bitstream_filters;
414     int        nb_bitstream_filters;
415     SpecifierOpt *codec_tags;
416     int        nb_codec_tags;
417     SpecifierOpt *sample_fmts;
418     int        nb_sample_fmts;
419     SpecifierOpt *qscale;
420     int        nb_qscale;
421     SpecifierOpt *forced_key_frames;
422     int        nb_forced_key_frames;
423     SpecifierOpt *force_fps;
424     int        nb_force_fps;
425     SpecifierOpt *frame_aspect_ratios;
426     int        nb_frame_aspect_ratios;
427     SpecifierOpt *rc_overrides;
428     int        nb_rc_overrides;
429     SpecifierOpt *intra_matrices;
430     int        nb_intra_matrices;
431     SpecifierOpt *inter_matrices;
432     int        nb_inter_matrices;
433     SpecifierOpt *top_field_first;
434     int        nb_top_field_first;
435     SpecifierOpt *metadata_map;
436     int        nb_metadata_map;
437     SpecifierOpt *presets;
438     int        nb_presets;
439     SpecifierOpt *copy_initial_nonkeyframes;
440     int        nb_copy_initial_nonkeyframes;
441     SpecifierOpt *filters;
442     int        nb_filters;
443 } OptionsContext;
444
445 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
446
447 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
448 {\
449     int i, ret;\
450     for (i = 0; i < o->nb_ ## name; i++) {\
451         char *spec = o->name[i].specifier;\
452         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
453             outvar = o->name[i].u.type;\
454         else if (ret < 0)\
455             exit_program(1);\
456     }\
457 }
458
459 static int64_t getutime(void)
460 {
461 #if HAVE_GETRUSAGE
462     struct rusage rusage;
463
464     getrusage(RUSAGE_SELF, &rusage);
465     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
466 #elif HAVE_GETPROCESSTIMES
467     HANDLE proc;
468     FILETIME c, e, k, u;
469     proc = GetCurrentProcess();
470     GetProcessTimes(proc, &c, &e, &k, &u);
471     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
472 #else
473     return av_gettime();
474 #endif
475 }
476
477 static void update_benchmark(const char *fmt, ...)
478 {
479     if (do_benchmark_all) {
480         int64_t t = getutime();
481         va_list va;
482         char buf[1024];
483
484         if (fmt) {
485             va_start(va, fmt);
486             vsnprintf(buf, sizeof(buf), fmt, va);
487             va_end(va);
488             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
489         }
490         current_time = t;
491     }
492 }
493
494 static void reset_options(OptionsContext *o, int is_input)
495 {
496     const OptionDef *po = options;
497     OptionsContext bak= *o;
498     int i;
499
500     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
501     while (po->name) {
502         void *dst = (uint8_t*)o + po->u.off;
503
504         if (po->flags & OPT_SPEC) {
505             SpecifierOpt **so = dst;
506             int i, *count = (int*)(so + 1);
507             for (i = 0; i < *count; i++) {
508                 av_freep(&(*so)[i].specifier);
509                 if (po->flags & OPT_STRING)
510                     av_freep(&(*so)[i].u.str);
511             }
512             av_freep(so);
513             *count = 0;
514         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
515             av_freep(dst);
516         po++;
517     }
518
519     for (i = 0; i < o->nb_stream_maps; i++)
520         av_freep(&o->stream_maps[i].linklabel);
521     av_freep(&o->stream_maps);
522     av_freep(&o->audio_channel_maps);
523     av_freep(&o->streamid_map);
524
525     memset(o, 0, sizeof(*o));
526
527     if(is_input) o->recording_time = bak.recording_time;
528     else         o->recording_time = INT64_MAX;
529     o->mux_max_delay  = 0.7;
530     o->limit_filesize = UINT64_MAX;
531     o->chapters_input_file = INT_MAX;
532
533     uninit_opts();
534     init_opts();
535 }
536
537 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
538 {
539     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
540     int i, ret;
541     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
542     int h_chroma_shift, v_chroma_shift;
543     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
544     int w = s->width, h = s->height;
545
546     if (!buf)
547         return AVERROR(ENOMEM);
548
549     avcodec_align_dimensions(s, &w, &h);
550
551     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
552         w += 2*edge;
553         h += 2*edge;
554     }
555
556     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
557                               s->pix_fmt, 32)) < 0) {
558         av_freep(&buf);
559         return ret;
560     }
561     /* XXX this shouldn't be needed, but some tests break without this line
562      * those decoders are buggy and need to be fixed.
563      * the following tests fail:
564      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
565      */
566     memset(buf->base[0], 128, ret);
567
568     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
569     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
570         const int h_shift = i==0 ? 0 : h_chroma_shift;
571         const int v_shift = i==0 ? 0 : v_chroma_shift;
572         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
573             buf->data[i] = buf->base[i];
574         else
575             buf->data[i] = buf->base[i] +
576                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
577                                    (pixel_size*edge >> h_shift), 32);
578     }
579     buf->w       = s->width;
580     buf->h       = s->height;
581     buf->pix_fmt = s->pix_fmt;
582     buf->ist     = ist;
583
584     *pbuf = buf;
585     return 0;
586 }
587
588 static void free_buffer_pool(InputStream *ist)
589 {
590     FrameBuffer *buf = ist->buffer_pool;
591     while (buf) {
592         ist->buffer_pool = buf->next;
593         av_freep(&buf->base[0]);
594         av_free(buf);
595         buf = ist->buffer_pool;
596     }
597 }
598
599 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
600 {
601     av_assert0(buf->refcount > 0);
602     buf->refcount--;
603     if (!buf->refcount) {
604         FrameBuffer *tmp;
605         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
606             av_assert1(tmp != buf);
607         buf->next = ist->buffer_pool;
608         ist->buffer_pool = buf;
609     }
610 }
611
612 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
613 {
614     InputStream *ist = s->opaque;
615     FrameBuffer *buf;
616     int ret, i;
617
618     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
619         return -1;
620
621     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
622         return ret;
623
624     buf              = ist->buffer_pool;
625     ist->buffer_pool = buf->next;
626     buf->next        = NULL;
627     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
628         av_freep(&buf->base[0]);
629         av_free(buf);
630         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
631             return ret;
632     }
633     av_assert0(!buf->refcount);
634     buf->refcount++;
635
636     frame->opaque        = buf;
637     frame->type          = FF_BUFFER_TYPE_USER;
638     frame->extended_data = frame->data;
639     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
640     frame->width         = buf->w;
641     frame->height        = buf->h;
642     frame->format        = buf->pix_fmt;
643     frame->sample_aspect_ratio = s->sample_aspect_ratio;
644
645     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
646         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
647         frame->data[i]     = buf->data[i];
648         frame->linesize[i] = buf->linesize[i];
649     }
650
651     return 0;
652 }
653
654 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
655 {
656     InputStream *ist = s->opaque;
657     FrameBuffer *buf = frame->opaque;
658     int i;
659
660     if(frame->type!=FF_BUFFER_TYPE_USER)
661         return avcodec_default_release_buffer(s, frame);
662
663     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
664         frame->data[i] = NULL;
665
666     unref_buffer(ist, buf);
667 }
668
669 static void filter_release_buffer(AVFilterBuffer *fb)
670 {
671     FrameBuffer *buf = fb->priv;
672     av_free(fb);
673     unref_buffer(buf->ist, buf);
674 }
675
676 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
677 {
678     if (codec && codec->pix_fmts) {
679         const enum PixelFormat *p = codec->pix_fmts;
680         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
681         enum PixelFormat best= PIX_FMT_NONE;
682         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
683             if (st->codec->codec_id == CODEC_ID_MJPEG) {
684                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
685             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
686                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
687                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
688             }
689         }
690         for (; *p != PIX_FMT_NONE; p++) {
691             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
692             if (*p == target)
693                 break;
694         }
695         if (*p == PIX_FMT_NONE) {
696             if (target != PIX_FMT_NONE)
697                 av_log(NULL, AV_LOG_WARNING,
698                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
699                        av_pix_fmt_descriptors[target].name,
700                        codec->name,
701                        av_pix_fmt_descriptors[best].name);
702             return best;
703         }
704     }
705     return target;
706 }
707
708 static char *choose_pix_fmts(OutputStream *ost)
709 {
710      if (ost->keep_pix_fmt) {
711         if (ost->filter)
712             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
713                                             AVFILTER_AUTO_CONVERT_NONE);
714         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
715             return NULL;
716         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
717     }
718     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
719         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
720     } else if (ost->enc && ost->enc->pix_fmts) {
721         const enum PixelFormat *p;
722         AVIOContext *s = NULL;
723         uint8_t *ret;
724         int len;
725
726         if (avio_open_dyn_buf(&s) < 0)
727             exit_program(1);
728
729         p = ost->enc->pix_fmts;
730         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
731             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
732                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
733             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
734                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
735                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
736             }
737         }
738
739         for (; *p != PIX_FMT_NONE; p++) {
740             const char *name = av_get_pix_fmt_name(*p);
741             avio_printf(s, "%s:", name);
742         }
743         len = avio_close_dyn_buf(s, &ret);
744         ret[len - 1] = 0;
745         return ret;
746     } else
747         return NULL;
748 }
749
750 /**
751  * Define a function for building a string containing a list of
752  * allowed formats,
753  */
754 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
755 static char *choose_ ## var ## s(OutputStream *ost)                             \
756 {                                                                               \
757     if (ost->st->codec->var != none) {                                          \
758         get_name(ost->st->codec->var);                                          \
759         return av_strdup(name);                                                 \
760     } else if (ost->enc->supported_list) {                                      \
761         const type *p;                                                          \
762         AVIOContext *s = NULL;                                                  \
763         uint8_t *ret;                                                           \
764         int len;                                                                \
765                                                                                 \
766         if (avio_open_dyn_buf(&s) < 0)                                          \
767             exit_program(1);                                                    \
768                                                                                 \
769         for (p = ost->enc->supported_list; *p != none; p++) {                   \
770             get_name(*p);                                                       \
771             avio_printf(s, "%s" separator, name);                               \
772         }                                                                       \
773         len = avio_close_dyn_buf(s, &ret);                                      \
774         ret[len - 1] = 0;                                                       \
775         return ret;                                                             \
776     } else                                                                      \
777         return NULL;                                                            \
778 }
779
780 #define GET_PIX_FMT_NAME(pix_fmt)\
781     const char *name = av_get_pix_fmt_name(pix_fmt);
782
783 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
784 //                   GET_PIX_FMT_NAME, ":")
785
786 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
787     const char *name = av_get_sample_fmt_name(sample_fmt)
788
789 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
790                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
791
792 #define GET_SAMPLE_RATE_NAME(rate)\
793     char name[16];\
794     snprintf(name, sizeof(name), "%d", rate);
795
796 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
797                   GET_SAMPLE_RATE_NAME, ",")
798
799 #define GET_CH_LAYOUT_NAME(ch_layout)\
800     char name[16];\
801     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
802
803 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
804                   GET_CH_LAYOUT_NAME, ",")
805
806 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
807 {
808     FilterGraph *fg = av_mallocz(sizeof(*fg));
809
810     if (!fg)
811         exit_program(1);
812     fg->index = nb_filtergraphs;
813
814     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
815                              fg->nb_outputs + 1);
816     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
817         exit_program(1);
818     fg->outputs[0]->ost   = ost;
819     fg->outputs[0]->graph = fg;
820
821     ost->filter = fg->outputs[0];
822
823     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
824                             fg->nb_inputs + 1);
825     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
826         exit_program(1);
827     fg->inputs[0]->ist   = ist;
828     fg->inputs[0]->graph = fg;
829
830     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
831                               &ist->nb_filters, ist->nb_filters + 1);
832     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
833
834     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
835                               &nb_filtergraphs, nb_filtergraphs + 1);
836     filtergraphs[nb_filtergraphs - 1] = fg;
837
838     return fg;
839 }
840
841 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
842 {
843     InputStream *ist = NULL;
844     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
845     int i;
846
847     // TODO: support other filter types
848     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
849         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
850                "currently.\n");
851         exit_program(1);
852     }
853
854     if (in->name) {
855         AVFormatContext *s;
856         AVStream       *st = NULL;
857         char *p;
858         int file_idx = strtol(in->name, &p, 0);
859
860         if (file_idx < 0 || file_idx >= nb_input_files) {
861             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
862                    file_idx, fg->graph_desc);
863             exit_program(1);
864         }
865         s = input_files[file_idx]->ctx;
866
867         for (i = 0; i < s->nb_streams; i++) {
868             if (s->streams[i]->codec->codec_type != type)
869                 continue;
870             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
871                 st = s->streams[i];
872                 break;
873             }
874         }
875         if (!st) {
876             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
877                    "matches no streams.\n", p, fg->graph_desc);
878             exit_program(1);
879         }
880         ist = input_streams[input_files[file_idx]->ist_index + st->index];
881     } else {
882         /* find the first unused stream of corresponding type */
883         for (i = 0; i < nb_input_streams; i++) {
884             ist = input_streams[i];
885             if (ist->st->codec->codec_type == type && ist->discard)
886                 break;
887         }
888         if (i == nb_input_streams) {
889             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
890                    "unlabeled input pad %d on filter %s\n", in->pad_idx,
891                    in->filter_ctx->name);
892             exit_program(1);
893         }
894     }
895     ist->discard         = 0;
896     ist->decoding_needed = 1;
897     ist->st->discard = AVDISCARD_NONE;
898
899     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
900                             &fg->nb_inputs, fg->nb_inputs + 1);
901     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
902         exit_program(1);
903     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
904     fg->inputs[fg->nb_inputs - 1]->graph = fg;
905
906     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
907                               &ist->nb_filters, ist->nb_filters + 1);
908     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
909 }
910
911 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
912 {
913     char *pix_fmts;
914     OutputStream *ost = ofilter->ost;
915     AVCodecContext *codec = ost->st->codec;
916     AVFilterContext *last_filter = out->filter_ctx;
917     int pad_idx = out->pad_idx;
918     int ret;
919     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
920
921 #if FF_API_OLD_VSINK_API
922     ret = avfilter_graph_create_filter(&ofilter->filter,
923                                        avfilter_get_by_name("buffersink"),
924                                        "ffmpeg_buffersink", NULL, NULL, fg->graph);
925 #else
926     ret = avfilter_graph_create_filter(&ofilter->filter,
927                                        avfilter_get_by_name("buffersink"),
928                                        "ffmpeg_buffersink", NULL, buffersink_params, fg->graph);
929 #endif
930     av_freep(&buffersink_params);
931
932     if (ret < 0)
933         return ret;
934
935     if (codec->width || codec->height) {
936         char args[255];
937         AVFilterContext *filter;
938
939         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
940                  codec->width,
941                  codec->height,
942                  (unsigned)ost->sws_flags);
943         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
944                                                 NULL, args, NULL, fg->graph)) < 0)
945             return ret;
946         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
947             return ret;
948
949         last_filter = filter;
950         pad_idx = 0;
951     }
952
953     if ((pix_fmts = choose_pix_fmts(ost))) {
954         AVFilterContext *filter;
955         if ((ret = avfilter_graph_create_filter(&filter,
956                                                 avfilter_get_by_name("format"),
957                                                 "format", pix_fmts, NULL,
958                                                 fg->graph)) < 0)
959             return ret;
960         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
961             return ret;
962
963         last_filter = filter;
964         pad_idx     = 0;
965         av_freep(&pix_fmts);
966     }
967
968     if (ost->frame_rate.num && 0) {
969         AVFilterContext *fps;
970         char args[255];
971
972         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
973                  ost->frame_rate.den);
974         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
975                                            "fps", args, NULL, fg->graph);
976         if (ret < 0)
977             return ret;
978
979         ret = avfilter_link(last_filter, pad_idx, fps, 0);
980         if (ret < 0)
981             return ret;
982         last_filter = fps;
983         pad_idx = 0;
984     }
985
986     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
987         return ret;
988
989     return 0;
990 }
991
992 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
993 {
994     OutputStream *ost = ofilter->ost;
995     AVCodecContext *codec  = ost->st->codec;
996     AVFilterContext *last_filter = out->filter_ctx;
997     int pad_idx = out->pad_idx;
998     char *sample_fmts, *sample_rates, *channel_layouts;
999     int ret;
1000
1001     ret = avfilter_graph_create_filter(&ofilter->filter,
1002                                        avfilter_get_by_name("abuffersink_old"),
1003                                        "ffmpeg_abuffersink_old", NULL, NULL, fg->graph);
1004     if (ret < 0)
1005         return ret;
1006
1007 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
1008     AVFilterContext *filt_ctx;                                              \
1009                                                                             \
1010     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
1011            "similarly to -af " filter_name "=%s.\n", arg);                  \
1012                                                                             \
1013     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1014                                        avfilter_get_by_name(filter_name),   \
1015                                        filter_name, arg, NULL, fg->graph);  \
1016     if (ret < 0)                                                            \
1017         return ret;                                                         \
1018                                                                             \
1019     ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0);                 \
1020     if (ret < 0)                                                            \
1021         return ret;                                                         \
1022                                                                             \
1023     last_filter = filt_ctx;                                                 \
1024     pad_idx = 0;                                                            \
1025 } while (0)
1026     if (ost->audio_channels_mapped) {
1027         int i;
1028         AVBPrint pan_buf;
1029         av_bprint_init(&pan_buf, 256, 8192);
1030         av_bprintf(&pan_buf, "0x%"PRIx64,
1031                    av_get_default_channel_layout(ost->audio_channels_mapped));
1032         for (i = 0; i < ost->audio_channels_mapped; i++)
1033             if (ost->audio_channels_map[i] != -1)
1034                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
1035
1036         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
1037         av_bprint_finalize(&pan_buf, NULL);
1038     }
1039
1040     if (codec->channels && !codec->channel_layout)
1041         codec->channel_layout = av_get_default_channel_layout(codec->channels);
1042
1043     sample_fmts     = choose_sample_fmts(ost);
1044     sample_rates    = choose_sample_rates(ost);
1045     channel_layouts = choose_channel_layouts(ost);
1046     if (sample_fmts || sample_rates || channel_layouts) {
1047         AVFilterContext *format;
1048         char args[256];
1049         int len = 0;
1050
1051         if (sample_fmts)
1052             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
1053                             sample_fmts);
1054         if (sample_rates)
1055             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
1056                             sample_rates);
1057         if (channel_layouts)
1058             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
1059                             channel_layouts);
1060         args[len - 1] = 0;
1061
1062         av_freep(&sample_fmts);
1063         av_freep(&sample_rates);
1064         av_freep(&channel_layouts);
1065
1066         ret = avfilter_graph_create_filter(&format,
1067                                            avfilter_get_by_name("aformat"),
1068                                            "aformat", args, NULL, fg->graph);
1069         if (ret < 0)
1070             return ret;
1071
1072         ret = avfilter_link(last_filter, pad_idx, format, 0);
1073         if (ret < 0)
1074             return ret;
1075
1076         last_filter = format;
1077         pad_idx = 0;
1078     }
1079
1080     if (audio_sync_method > 0 && 0) {
1081         char args[256] = {0};
1082
1083         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
1084         if (audio_sync_method > 1)
1085             av_strlcatf(args, sizeof(args), ":max_soft_comp=%d", -audio_sync_method);
1086         AUTO_INSERT_FILTER("-async", "aresample", args);
1087     }
1088
1089     if (audio_volume != 256 && 0) {
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]->avfilter);
1502         av_freep(&output_streams[i]);
1503     }
1504     for (i = 0; i < nb_input_files; i++) {
1505         avformat_close_input(&input_files[i]->ctx);
1506         av_freep(&input_files[i]);
1507     }
1508     for (i = 0; i < nb_input_streams; i++) {
1509         av_freep(&input_streams[i]->decoded_frame);
1510         av_dict_free(&input_streams[i]->opts);
1511         free_buffer_pool(input_streams[i]);
1512         av_freep(&input_streams[i]->filters);
1513         av_freep(&input_streams[i]);
1514     }
1515
1516     if (vstats_file)
1517         fclose(vstats_file);
1518     av_free(vstats_filename);
1519
1520     av_freep(&input_streams);
1521     av_freep(&input_files);
1522     av_freep(&output_streams);
1523     av_freep(&output_files);
1524
1525     uninit_opts();
1526
1527     avfilter_uninit();
1528     avformat_network_deinit();
1529
1530     if (received_sigterm) {
1531         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1532                (int) received_sigterm);
1533         exit (255);
1534     }
1535
1536     exit(ret);
1537 }
1538
1539 static void assert_avoptions(AVDictionary *m)
1540 {
1541     AVDictionaryEntry *t;
1542     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1543         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1544         exit_program(1);
1545     }
1546 }
1547
1548 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1549 {
1550     const char *codec_string = encoder ? "encoder" : "decoder";
1551     AVCodec *codec;
1552     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1553         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1554         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1555                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1556                 codec_string, c->codec->name);
1557         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1558         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1559             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1560                    codec_string, codec->name);
1561         exit_program(1);
1562     }
1563 }
1564
1565 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1566 {
1567     if (codec && codec->sample_fmts) {
1568         const enum AVSampleFormat *p = codec->sample_fmts;
1569         for (; *p != -1; p++) {
1570             if (*p == st->codec->sample_fmt)
1571                 break;
1572         }
1573         if (*p == -1) {
1574             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1575                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1576             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1577             av_log(NULL, AV_LOG_WARNING,
1578                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1579                    av_get_sample_fmt_name(st->codec->sample_fmt),
1580                    codec->name,
1581                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1582             st->codec->sample_fmt = codec->sample_fmts[0];
1583         }
1584     }
1585 }
1586
1587 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1588 {
1589     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1590     AVCodecContext          *avctx = ost->st->codec;
1591     int ret;
1592
1593     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1594         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1595         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1596
1597     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1598         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1599         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1600             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1601             pkt->pts = pkt->dts = max;
1602         }
1603     }
1604
1605     /*
1606      * Audio encoders may split the packets --  #frames in != #packets out.
1607      * But there is no reordering, so we can limit the number of output packets
1608      * by simply dropping them here.
1609      * Counting encoded video frames needs to be done separately because of
1610      * reordering, see do_video_out()
1611      */
1612     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1613         if (ost->frame_number >= ost->max_frames) {
1614             av_free_packet(pkt);
1615             return;
1616         }
1617         ost->frame_number++;
1618     }
1619
1620     while (bsfc) {
1621         AVPacket new_pkt = *pkt;
1622         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1623                                            &new_pkt.data, &new_pkt.size,
1624                                            pkt->data, pkt->size,
1625                                            pkt->flags & AV_PKT_FLAG_KEY);
1626         if (a > 0) {
1627             av_free_packet(pkt);
1628             new_pkt.destruct = av_destruct_packet;
1629         } else if (a < 0) {
1630             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1631                    bsfc->filter->name, pkt->stream_index,
1632                    avctx->codec ? avctx->codec->name : "copy");
1633             print_error("", a);
1634             if (exit_on_error)
1635                 exit_program(1);
1636         }
1637         *pkt = new_pkt;
1638
1639         bsfc = bsfc->next;
1640     }
1641
1642     pkt->stream_index = ost->index;
1643     ret = av_interleaved_write_frame(s, pkt);
1644     if (ret < 0) {
1645         print_error("av_interleaved_write_frame()", ret);
1646         exit_program(1);
1647     }
1648 }
1649
1650 static int check_recording_time(OutputStream *ost)
1651 {
1652     OutputFile *of = output_files[ost->file_index];
1653
1654     if (of->recording_time != INT64_MAX &&
1655         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1656                       AV_TIME_BASE_Q) >= 0) {
1657         ost->is_past_recording_time = 1;
1658         return 0;
1659     }
1660     return 1;
1661 }
1662
1663 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1664                          AVFrame *frame)
1665 {
1666     AVCodecContext *enc = ost->st->codec;
1667     AVPacket pkt;
1668     int got_packet = 0;
1669
1670     av_init_packet(&pkt);
1671     pkt.data = NULL;
1672     pkt.size = 0;
1673 #if 0
1674     if (!check_recording_time(ost))
1675         return;
1676 #endif
1677     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1678         frame->pts = ost->sync_opts;
1679     ost->sync_opts = frame->pts + frame->nb_samples;
1680
1681     av_assert0(pkt.size || !pkt.data);
1682     update_benchmark(NULL);
1683     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1684         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1685         exit_program(1);
1686     }
1687     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1688
1689     if (got_packet) {
1690         if (pkt.pts != AV_NOPTS_VALUE)
1691             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1692         if (pkt.dts != AV_NOPTS_VALUE)
1693             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1694         if (pkt.duration > 0)
1695             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1696
1697         if (debug_ts) {
1698             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1699                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1700                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1701                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1702         }
1703
1704         write_frame(s, &pkt, ost);
1705
1706         audio_size += pkt.size;
1707         av_free_packet(&pkt);
1708     }
1709 }
1710
1711 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1712 {
1713     AVCodecContext *dec;
1714     AVPicture *picture2;
1715     AVPicture picture_tmp;
1716     uint8_t *buf = 0;
1717
1718     dec = ist->st->codec;
1719
1720     /* deinterlace : must be done before any resize */
1721     if (do_deinterlace) {
1722         int size;
1723
1724         /* create temporary picture */
1725         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1726         buf  = av_malloc(size);
1727         if (!buf)
1728             return;
1729
1730         picture2 = &picture_tmp;
1731         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1732
1733         if (avpicture_deinterlace(picture2, picture,
1734                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1735             /* if error, do not deinterlace */
1736             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1737             av_free(buf);
1738             buf = NULL;
1739             picture2 = picture;
1740         }
1741     } else {
1742         picture2 = picture;
1743     }
1744
1745     if (picture != picture2)
1746         *picture = *picture2;
1747     *bufp = buf;
1748 }
1749
1750 static void do_subtitle_out(AVFormatContext *s,
1751                             OutputStream *ost,
1752                             InputStream *ist,
1753                             AVSubtitle *sub,
1754                             int64_t pts)
1755 {
1756     static uint8_t *subtitle_out = NULL;
1757     int subtitle_out_max_size = 1024 * 1024;
1758     int subtitle_out_size, nb, i;
1759     AVCodecContext *enc;
1760     AVPacket pkt;
1761
1762     if (pts == AV_NOPTS_VALUE) {
1763         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1764         if (exit_on_error)
1765             exit_program(1);
1766         return;
1767     }
1768
1769     enc = ost->st->codec;
1770
1771     if (!subtitle_out) {
1772         subtitle_out = av_malloc(subtitle_out_max_size);
1773     }
1774
1775     /* Note: DVB subtitle need one packet to draw them and one other
1776        packet to clear them */
1777     /* XXX: signal it in the codec context ? */
1778     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1779         nb = 2;
1780     else
1781         nb = 1;
1782
1783     for (i = 0; i < nb; i++) {
1784         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1785
1786         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1787         // start_display_time is required to be 0
1788         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1789         sub->end_display_time  -= sub->start_display_time;
1790         sub->start_display_time = 0;
1791         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1792                                                     subtitle_out_max_size, sub);
1793         if (subtitle_out_size < 0) {
1794             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1795             exit_program(1);
1796         }
1797
1798         av_init_packet(&pkt);
1799         pkt.data = subtitle_out;
1800         pkt.size = subtitle_out_size;
1801         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1802         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1803             /* XXX: the pts correction is handled here. Maybe handling
1804                it in the codec would be better */
1805             if (i == 0)
1806                 pkt.pts += 90 * sub->start_display_time;
1807             else
1808                 pkt.pts += 90 * sub->end_display_time;
1809         }
1810         write_frame(s, &pkt, ost);
1811     }
1812 }
1813
1814 static void do_video_out(AVFormatContext *s,
1815                          OutputStream *ost,
1816                          AVFrame *in_picture,
1817                          float quality)
1818 {
1819     int ret, format_video_sync;
1820     AVPacket pkt;
1821     AVCodecContext *enc = ost->st->codec;
1822     int nb_frames;
1823     double sync_ipts, delta;
1824     double duration = 0;
1825     int frame_size = 0;
1826     InputStream *ist = NULL;
1827
1828     if (ost->source_index >= 0)
1829         ist = input_streams[ost->source_index];
1830
1831     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1832         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1833
1834     sync_ipts = in_picture->pts;
1835     delta = sync_ipts - ost->sync_opts + duration;
1836
1837     /* by default, we output a single frame */
1838     nb_frames = 1;
1839
1840     format_video_sync = video_sync_method;
1841     if (format_video_sync == VSYNC_AUTO)
1842         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1843
1844     switch (format_video_sync) {
1845     case VSYNC_CFR:
1846         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1847         if (delta < -1.1)
1848             nb_frames = 0;
1849         else if (delta > 1.1)
1850             nb_frames = lrintf(delta);
1851         break;
1852     case VSYNC_VFR:
1853         if (delta <= -0.6)
1854             nb_frames = 0;
1855         else if (delta > 0.6)
1856             ost->sync_opts = lrint(sync_ipts);
1857         break;
1858     case VSYNC_DROP:
1859     case VSYNC_PASSTHROUGH:
1860         ost->sync_opts = lrint(sync_ipts);
1861         break;
1862     default:
1863         av_assert0(0);
1864     }
1865
1866     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1867     if (nb_frames == 0) {
1868         nb_frames_drop++;
1869         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1870         return;
1871     } else if (nb_frames > 1) {
1872         nb_frames_dup += nb_frames - 1;
1873         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1874     }
1875
1876
1877 duplicate_frame:
1878     av_init_packet(&pkt);
1879     pkt.data = NULL;
1880     pkt.size = 0;
1881
1882     in_picture->pts = ost->sync_opts;
1883
1884     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1885         enc->codec->id == CODEC_ID_RAWVIDEO) {
1886         /* raw pictures are written as AVPicture structure to
1887            avoid any copies. We support temporarily the older
1888            method. */
1889         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1890         enc->coded_frame->top_field_first  = in_picture->top_field_first;
1891         pkt.data   = (uint8_t *)in_picture;
1892         pkt.size   =  sizeof(AVPicture);
1893         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1894         pkt.flags |= AV_PKT_FLAG_KEY;
1895
1896         write_frame(s, &pkt, ost);
1897     } else {
1898         int got_packet;
1899         AVFrame big_picture;
1900
1901         big_picture = *in_picture;
1902         /* better than nothing: use input picture interlaced
1903            settings */
1904         big_picture.interlaced_frame = in_picture->interlaced_frame;
1905         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1906             if (ost->top_field_first == -1)
1907                 big_picture.top_field_first = in_picture->top_field_first;
1908             else
1909                 big_picture.top_field_first = !!ost->top_field_first;
1910         }
1911
1912         /* handles same_quant here. This is not correct because it may
1913            not be a global option */
1914         big_picture.quality = quality;
1915         if (!enc->me_threshold)
1916             big_picture.pict_type = 0;
1917         if (ost->forced_kf_index < ost->forced_kf_count &&
1918             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1919             big_picture.pict_type = AV_PICTURE_TYPE_I;
1920             ost->forced_kf_index++;
1921         }
1922         update_benchmark(NULL);
1923         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1924         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1925         if (ret < 0) {
1926             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1927             exit_program(1);
1928         }
1929
1930         if (got_packet) {
1931             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1932                 pkt.pts = ost->sync_opts;
1933
1934             if (pkt.pts != AV_NOPTS_VALUE)
1935                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1936             if (pkt.dts != AV_NOPTS_VALUE)
1937                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1938
1939             if (debug_ts) {
1940                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1941                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1942                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1943                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1944             }
1945
1946             write_frame(s, &pkt, ost);
1947             frame_size = pkt.size;
1948             video_size += pkt.size;
1949             av_free_packet(&pkt);
1950
1951             /* if two pass, output log */
1952             if (ost->logfile && enc->stats_out) {
1953                 fprintf(ost->logfile, "%s", enc->stats_out);
1954             }
1955         }
1956     }
1957     ost->sync_opts++;
1958     /*
1959      * For video, number of frames in == number of packets out.
1960      * But there may be reordering, so we can't throw away frames on encoder
1961      * flush, we need to limit them here, before they go into encoder.
1962      */
1963     ost->frame_number++;
1964
1965     if(--nb_frames)
1966         goto duplicate_frame;
1967
1968     if (vstats_filename && frame_size)
1969         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1970 }
1971
1972 static double psnr(double d)
1973 {
1974     return -10.0 * log(d) / log(10.0);
1975 }
1976
1977 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1978                            int frame_size)
1979 {
1980     AVCodecContext *enc;
1981     int frame_number;
1982     double ti1, bitrate, avg_bitrate;
1983
1984     /* this is executed just the first time do_video_stats is called */
1985     if (!vstats_file) {
1986         vstats_file = fopen(vstats_filename, "w");
1987         if (!vstats_file) {
1988             perror("fopen");
1989             exit_program(1);
1990         }
1991     }
1992
1993     enc = ost->st->codec;
1994     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1995         frame_number = ost->frame_number;
1996         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1997         if (enc->flags&CODEC_FLAG_PSNR)
1998             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1999
2000         fprintf(vstats_file,"f_size= %6d ", frame_size);
2001         /* compute pts value */
2002         ti1 = ost->sync_opts * av_q2d(enc->time_base);
2003         if (ti1 < 0.01)
2004             ti1 = 0.01;
2005
2006         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
2007         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
2008         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
2009                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
2010         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
2011     }
2012 }
2013
2014 /* check for new output on any of the filtergraphs */
2015 static int poll_filters(void)
2016 {
2017     AVFilterBufferRef *picref;
2018     AVFrame *filtered_frame = NULL;
2019     int i, ret, ret_all;
2020     unsigned nb_success, nb_eof;
2021     int64_t frame_pts;
2022
2023     while (1) {
2024         /* Reap all buffers present in the buffer sinks */
2025         for (i = 0; i < nb_output_streams; i++) {
2026             OutputStream *ost = output_streams[i];
2027             OutputFile    *of = output_files[ost->file_index];
2028             int ret = 0;
2029
2030             if (!ost->filter || ost->is_past_recording_time)
2031                 continue;
2032
2033             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2034                 return AVERROR(ENOMEM);
2035             } else
2036                 avcodec_get_frame_defaults(ost->filtered_frame);
2037             filtered_frame = ost->filtered_frame;
2038
2039             while (1) {
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     if(ist->top_field_first>=0)
2578         decoded_frame->top_field_first = ist->top_field_first;
2579
2580     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2581     if(best_effort_timestamp != AV_NOPTS_VALUE)
2582         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2583
2584     pkt->size = 0;
2585     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2586
2587     rate_emu_sleep(ist);
2588
2589     if (ist->st->sample_aspect_ratio.num)
2590         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2591
2592     resample_changed = ist->resample_width   != decoded_frame->width  ||
2593                        ist->resample_height  != decoded_frame->height ||
2594                        ist->resample_pix_fmt != decoded_frame->format;
2595     if (resample_changed) {
2596         av_log(NULL, AV_LOG_INFO,
2597                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2598                ist->file_index, ist->st->index,
2599                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2600                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2601
2602         ist->resample_width   = decoded_frame->width;
2603         ist->resample_height  = decoded_frame->height;
2604         ist->resample_pix_fmt = decoded_frame->format;
2605
2606         for (i = 0; i < nb_filtergraphs; i++)
2607             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2608                 configure_filtergraph(filtergraphs[i]) < 0) {
2609                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2610                 exit_program(1);
2611             }
2612     }
2613
2614     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2615     for (i = 0; i < ist->nb_filters; i++) {
2616         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2617                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2618                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2619         // XXX what an ugly hack
2620         if (ist->filters[i]->graph->nb_outputs == 1)
2621             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2622
2623         if (!frame_sample_aspect->num)
2624             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2625         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2626             FrameBuffer      *buf = decoded_frame->opaque;
2627             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2628                                         decoded_frame->data, decoded_frame->linesize,
2629                                         AV_PERM_READ | AV_PERM_PRESERVE,
2630                                         ist->st->codec->width, ist->st->codec->height,
2631                                         ist->st->codec->pix_fmt);
2632
2633             avfilter_copy_frame_props(fb, decoded_frame);
2634             fb->buf->priv           = buf;
2635             fb->buf->free           = filter_release_buffer;
2636
2637             av_assert0(buf->refcount>0);
2638             buf->refcount++;
2639             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2640                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2641                                  AV_BUFFERSRC_FLAG_NO_COPY);
2642         } else
2643         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2644             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2645             exit_program(1);
2646         }
2647
2648     }
2649
2650     av_free(buffer_to_free);
2651     return ret;
2652 }
2653
2654 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2655 {
2656     AVSubtitle subtitle;
2657     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2658                                           &subtitle, got_output, pkt);
2659     if (ret < 0)
2660         return ret;
2661     if (!*got_output)
2662         return ret;
2663
2664     rate_emu_sleep(ist);
2665
2666     for (i = 0; i < nb_output_streams; i++) {
2667         OutputStream *ost = output_streams[i];
2668
2669         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2670             continue;
2671
2672         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2673     }
2674
2675     avsubtitle_free(&subtitle);
2676     return ret;
2677 }
2678
2679 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2680 static int output_packet(InputStream *ist, const AVPacket *pkt)
2681 {
2682     int ret = 0, i;
2683     int got_output;
2684
2685     AVPacket avpkt;
2686     if (!ist->saw_first_ts) {
2687         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;
2688         ist->pts = 0;
2689         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2690             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2691             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2692         }
2693         ist->saw_first_ts = 1;
2694     }
2695
2696     if (ist->next_dts == AV_NOPTS_VALUE)
2697         ist->next_dts = ist->dts;
2698     if (ist->next_pts == AV_NOPTS_VALUE)
2699         ist->next_pts = ist->pts;
2700
2701     if (pkt == NULL) {
2702         /* EOF handling */
2703         av_init_packet(&avpkt);
2704         avpkt.data = NULL;
2705         avpkt.size = 0;
2706         goto handle_eof;
2707     } else {
2708         avpkt = *pkt;
2709     }
2710
2711     if (pkt->dts != AV_NOPTS_VALUE) {
2712         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2713         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2714             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2715     }
2716
2717     // while we have more to decode or while the decoder did output something on EOF
2718     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2719         int duration;
2720     handle_eof:
2721
2722         ist->pts = ist->next_pts;
2723         ist->dts = ist->next_dts;
2724
2725         if (avpkt.size && avpkt.size != pkt->size) {
2726             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2727                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2728             ist->showed_multi_packet_warning = 1;
2729         }
2730
2731         switch (ist->st->codec->codec_type) {
2732         case AVMEDIA_TYPE_AUDIO:
2733             ret = decode_audio    (ist, &avpkt, &got_output);
2734             break;
2735         case AVMEDIA_TYPE_VIDEO:
2736             ret = decode_video    (ist, &avpkt, &got_output);
2737             if (avpkt.duration) {
2738                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2739             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2740                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2741                 duration = ((int64_t)AV_TIME_BASE *
2742                                 ist->st->codec->time_base.num * ticks) /
2743                                 ist->st->codec->time_base.den;
2744             } else
2745                 duration = 0;
2746
2747             if(ist->dts != AV_NOPTS_VALUE && duration) {
2748                 ist->next_dts += duration;
2749             }else
2750                 ist->next_dts = AV_NOPTS_VALUE;
2751
2752             if (got_output)
2753                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2754             break;
2755         case AVMEDIA_TYPE_SUBTITLE:
2756             ret = transcode_subtitles(ist, &avpkt, &got_output);
2757             break;
2758         default:
2759             return -1;
2760         }
2761
2762         if (ret < 0)
2763             return ret;
2764
2765         avpkt.dts=
2766         avpkt.pts= AV_NOPTS_VALUE;
2767
2768         // touch data and size only if not EOF
2769         if (pkt) {
2770             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2771                 ret = avpkt.size;
2772             avpkt.data += ret;
2773             avpkt.size -= ret;
2774         }
2775         if (!got_output) {
2776             continue;
2777         }
2778     }
2779
2780     /* handle stream copy */
2781     if (!ist->decoding_needed) {
2782         rate_emu_sleep(ist);
2783         ist->dts = ist->next_dts;
2784         switch (ist->st->codec->codec_type) {
2785         case AVMEDIA_TYPE_AUDIO:
2786             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2787                              ist->st->codec->sample_rate;
2788             break;
2789         case AVMEDIA_TYPE_VIDEO:
2790             if (pkt->duration) {
2791                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2792             } else if(ist->st->codec->time_base.num != 0) {
2793                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2794                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2795                                   ist->st->codec->time_base.num * ticks) /
2796                                   ist->st->codec->time_base.den;
2797             }
2798             break;
2799         }
2800         ist->pts = ist->dts;
2801         ist->next_pts = ist->next_dts;
2802     }
2803     for (i = 0; pkt && i < nb_output_streams; i++) {
2804         OutputStream *ost = output_streams[i];
2805
2806         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2807             continue;
2808
2809         do_streamcopy(ist, ost, pkt);
2810     }
2811
2812     return 0;
2813 }
2814
2815 static void print_sdp(void)
2816 {
2817     char sdp[2048];
2818     int i;
2819     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2820
2821     if (!avc)
2822         exit_program(1);
2823     for (i = 0; i < nb_output_files; i++)
2824         avc[i] = output_files[i]->ctx;
2825
2826     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2827     printf("SDP:\n%s\n", sdp);
2828     fflush(stdout);
2829     av_freep(&avc);
2830 }
2831
2832 static int init_input_stream(int ist_index, char *error, int error_len)
2833 {
2834     InputStream *ist = input_streams[ist_index];
2835
2836     if (ist->decoding_needed) {
2837         AVCodec *codec = ist->dec;
2838         if (!codec) {
2839             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2840                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2841             return AVERROR(EINVAL);
2842         }
2843
2844         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2845         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2846             ist->st->codec->get_buffer     = codec_get_buffer;
2847             ist->st->codec->release_buffer = codec_release_buffer;
2848             ist->st->codec->opaque         = ist;
2849         }
2850
2851         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2852             av_dict_set(&ist->opts, "threads", "auto", 0);
2853         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2854             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2855                     ist->file_index, ist->st->index);
2856             return AVERROR(EINVAL);
2857         }
2858         assert_codec_experimental(ist->st->codec, 0);
2859         assert_avoptions(ist->opts);
2860     }
2861
2862     ist->next_pts = AV_NOPTS_VALUE;
2863     ist->next_dts = AV_NOPTS_VALUE;
2864     ist->is_start = 1;
2865
2866     return 0;
2867 }
2868
2869 static InputStream *get_input_stream(OutputStream *ost)
2870 {
2871     if (ost->source_index >= 0)
2872         return input_streams[ost->source_index];
2873
2874     if (ost->filter) {
2875         FilterGraph *fg = ost->filter->graph;
2876         int i;
2877
2878         for (i = 0; i < fg->nb_inputs; i++)
2879             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2880                 return fg->inputs[i]->ist;
2881     }
2882
2883     return NULL;
2884 }
2885
2886 static int transcode_init(void)
2887 {
2888     int ret = 0, i, j, k;
2889     AVFormatContext *oc;
2890     AVCodecContext *codec, *icodec;
2891     OutputStream *ost;
2892     InputStream *ist;
2893     char error[1024];
2894     int want_sdp = 1;
2895
2896     /* init framerate emulation */
2897     for (i = 0; i < nb_input_files; i++) {
2898         InputFile *ifile = input_files[i];
2899         if (ifile->rate_emu)
2900             for (j = 0; j < ifile->nb_streams; j++)
2901                 input_streams[j + ifile->ist_index]->start = av_gettime();
2902     }
2903
2904     /* output stream init */
2905     for (i = 0; i < nb_output_files; i++) {
2906         oc = output_files[i]->ctx;
2907         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2908             av_dump_format(oc, i, oc->filename, 1);
2909             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2910             return AVERROR(EINVAL);
2911         }
2912     }
2913
2914     /* init complex filtergraphs */
2915     for (i = 0; i < nb_filtergraphs; i++)
2916         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2917             return ret;
2918
2919     /* for each output stream, we compute the right encoding parameters */
2920     for (i = 0; i < nb_output_streams; i++) {
2921         ost = output_streams[i];
2922         oc  = output_files[ost->file_index]->ctx;
2923         ist = get_input_stream(ost);
2924
2925         if (ost->attachment_filename)
2926             continue;
2927
2928         codec  = ost->st->codec;
2929
2930         if (ist) {
2931             icodec = ist->st->codec;
2932
2933             ost->st->disposition          = ist->st->disposition;
2934             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2935             codec->chroma_sample_location = icodec->chroma_sample_location;
2936         }
2937
2938         if (ost->stream_copy) {
2939             uint64_t extra_size;
2940
2941             av_assert0(ist && !ost->filter);
2942
2943             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2944
2945             if (extra_size > INT_MAX) {
2946                 return AVERROR(EINVAL);
2947             }
2948
2949             /* if stream_copy is selected, no need to decode or encode */
2950             codec->codec_id   = icodec->codec_id;
2951             codec->codec_type = icodec->codec_type;
2952
2953             if (!codec->codec_tag) {
2954                 if (!oc->oformat->codec_tag ||
2955                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2956                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2957                     codec->codec_tag = icodec->codec_tag;
2958             }
2959
2960             codec->bit_rate       = icodec->bit_rate;
2961             codec->rc_max_rate    = icodec->rc_max_rate;
2962             codec->rc_buffer_size = icodec->rc_buffer_size;
2963             codec->field_order    = icodec->field_order;
2964             codec->extradata      = av_mallocz(extra_size);
2965             if (!codec->extradata) {
2966                 return AVERROR(ENOMEM);
2967             }
2968             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2969             codec->extradata_size= icodec->extradata_size;
2970             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2971
2972             codec->time_base = ist->st->time_base;
2973             /*
2974              * Avi is a special case here because it supports variable fps but
2975              * having the fps and timebase differe significantly adds quite some
2976              * overhead
2977              */
2978             if(!strcmp(oc->oformat->name, "avi")) {
2979                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2980                                  && av_q2d(ist->st->time_base) < 1.0/500
2981                     || copy_tb==0){
2982                     codec->time_base = icodec->time_base;
2983                     codec->time_base.num *= icodec->ticks_per_frame;
2984                     codec->time_base.den *= 2;
2985                     codec->ticks_per_frame = 2;
2986                 }
2987             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2988                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2989                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2990             ) {
2991                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2992                                 && av_q2d(ist->st->time_base) < 1.0/500
2993                    || copy_tb==0){
2994                     codec->time_base = icodec->time_base;
2995                     codec->time_base.num *= icodec->ticks_per_frame;
2996                 }
2997             }
2998             av_reduce(&codec->time_base.num, &codec->time_base.den,
2999                         codec->time_base.num, codec->time_base.den, INT_MAX);
3000
3001             switch (codec->codec_type) {
3002             case AVMEDIA_TYPE_AUDIO:
3003                 if (audio_volume != 256) {
3004                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3005                     exit_program(1);
3006                 }
3007                 codec->channel_layout     = icodec->channel_layout;
3008                 codec->sample_rate        = icodec->sample_rate;
3009                 codec->channels           = icodec->channels;
3010                 codec->frame_size         = icodec->frame_size;
3011                 codec->audio_service_type = icodec->audio_service_type;
3012                 codec->block_align        = icodec->block_align;
3013                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
3014                     codec->block_align= 0;
3015                 if(codec->codec_id == CODEC_ID_AC3)
3016                     codec->block_align= 0;
3017                 break;
3018             case AVMEDIA_TYPE_VIDEO:
3019                 codec->pix_fmt            = icodec->pix_fmt;
3020                 codec->width              = icodec->width;
3021                 codec->height             = icodec->height;
3022                 codec->has_b_frames       = icodec->has_b_frames;
3023                 if (!codec->sample_aspect_ratio.num) {
3024                     codec->sample_aspect_ratio   =
3025                     ost->st->sample_aspect_ratio =
3026                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3027                         ist->st->codec->sample_aspect_ratio.num ?
3028                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3029                 }
3030                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3031                 break;
3032             case AVMEDIA_TYPE_SUBTITLE:
3033                 codec->width  = icodec->width;
3034                 codec->height = icodec->height;
3035                 break;
3036             case AVMEDIA_TYPE_DATA:
3037             case AVMEDIA_TYPE_ATTACHMENT:
3038                 break;
3039             default:
3040                 abort();
3041             }
3042         } else {
3043             if (!ost->enc)
3044                 ost->enc = avcodec_find_encoder(codec->codec_id);
3045             if (!ost->enc) {
3046                 /* should only happen when a default codec is not present. */
3047                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3048                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3049                 ret = AVERROR(EINVAL);
3050                 goto dump_format;
3051             }
3052
3053             if (ist)
3054                 ist->decoding_needed = 1;
3055             ost->encoding_needed = 1;
3056
3057             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3058                 if (ist && !ost->frame_rate.num)
3059                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3060                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3061                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3062                     ost->frame_rate = ost->enc->supported_framerates[idx];
3063                 }
3064             }
3065
3066             if (!ost->filter &&
3067                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3068                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3069                     FilterGraph *fg;
3070                     fg = init_simple_filtergraph(ist, ost);
3071                     if (configure_filtergraph(fg)) {
3072                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3073                         exit(1);
3074                     }
3075             }
3076
3077             switch (codec->codec_type) {
3078             case AVMEDIA_TYPE_AUDIO:
3079                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3080                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3081                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3082                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3083                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3084                 break;
3085             case AVMEDIA_TYPE_VIDEO:
3086                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3087                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
3088                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
3089                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3090                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3091                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3092                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3093                 }
3094                 for (j = 0; j < ost->forced_kf_count; j++)
3095                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3096                                                          AV_TIME_BASE_Q,
3097                                                          codec->time_base);
3098
3099                 codec->width  = ost->filter->filter->inputs[0]->w;
3100                 codec->height = ost->filter->filter->inputs[0]->h;
3101                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3102                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3103                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3104                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3105                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3106
3107                 if (!icodec ||
3108                     codec->width   != icodec->width  ||
3109                     codec->height  != icodec->height ||
3110                     codec->pix_fmt != icodec->pix_fmt) {
3111                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3112                 }
3113
3114                 break;
3115             case AVMEDIA_TYPE_SUBTITLE:
3116                 codec->time_base = (AVRational){1, 1000};
3117                 break;
3118             default:
3119                 abort();
3120                 break;
3121             }
3122             /* two pass mode */
3123             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3124                 char logfilename[1024];
3125                 FILE *f;
3126
3127                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3128                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3129                          i);
3130                 if (!strcmp(ost->enc->name, "libx264")) {
3131                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3132                 } else {
3133                     if (codec->flags & CODEC_FLAG_PASS2) {
3134                         char  *logbuffer;
3135                         size_t logbuffer_size;
3136                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3137                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3138                                    logfilename);
3139                             exit_program(1);
3140                         }
3141                         codec->stats_in = logbuffer;
3142                     }
3143                     if (codec->flags & CODEC_FLAG_PASS1) {
3144                         f = fopen(logfilename, "wb");
3145                         if (!f) {
3146                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3147                                 logfilename, strerror(errno));
3148                             exit_program(1);
3149                         }
3150                         ost->logfile = f;
3151                     }
3152                 }
3153             }
3154         }
3155     }
3156
3157     /* open each encoder */
3158     for (i = 0; i < nb_output_streams; i++) {
3159         ost = output_streams[i];
3160         if (ost->encoding_needed) {
3161             AVCodec      *codec = ost->enc;
3162             AVCodecContext *dec = NULL;
3163
3164             if ((ist = get_input_stream(ost)))
3165                 dec = ist->st->codec;
3166             if (dec && dec->subtitle_header) {
3167                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3168                 if (!ost->st->codec->subtitle_header) {
3169                     ret = AVERROR(ENOMEM);
3170                     goto dump_format;
3171                 }
3172                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3173                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3174             }
3175             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3176                 av_dict_set(&ost->opts, "threads", "auto", 0);
3177             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3178                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3179                         ost->file_index, ost->index);
3180                 ret = AVERROR(EINVAL);
3181                 goto dump_format;
3182             }
3183             assert_codec_experimental(ost->st->codec, 1);
3184             assert_avoptions(ost->opts);
3185             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3186                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3187                                              " It takes bits/s as argument, not kbits/s\n");
3188             extra_size += ost->st->codec->extradata_size;
3189
3190             if (ost->st->codec->me_threshold)
3191                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3192         }
3193     }
3194
3195     /* init input streams */
3196     for (i = 0; i < nb_input_streams; i++)
3197         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3198             goto dump_format;
3199
3200     /* discard unused programs */
3201     for (i = 0; i < nb_input_files; i++) {
3202         InputFile *ifile = input_files[i];
3203         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3204             AVProgram *p = ifile->ctx->programs[j];
3205             int discard  = AVDISCARD_ALL;
3206
3207             for (k = 0; k < p->nb_stream_indexes; k++)
3208                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3209                     discard = AVDISCARD_DEFAULT;
3210                     break;
3211                 }
3212             p->discard = discard;
3213         }
3214     }
3215
3216     /* open files and write file headers */
3217     for (i = 0; i < nb_output_files; i++) {
3218         oc = output_files[i]->ctx;
3219         oc->interrupt_callback = int_cb;
3220         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3221             char errbuf[128];
3222             const char *errbuf_ptr = errbuf;
3223             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
3224                 errbuf_ptr = strerror(AVUNERROR(ret));
3225             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
3226             ret = AVERROR(EINVAL);
3227             goto dump_format;
3228         }
3229 //         assert_avoptions(output_files[i]->opts);
3230         if (strcmp(oc->oformat->name, "rtp")) {
3231             want_sdp = 0;
3232         }
3233     }
3234
3235  dump_format:
3236     /* dump the file output parameters - cannot be done before in case
3237        of stream copy */
3238     for (i = 0; i < nb_output_files; i++) {
3239         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3240     }
3241
3242     /* dump the stream mapping */
3243     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3244     for (i = 0; i < nb_input_streams; i++) {
3245         ist = input_streams[i];
3246
3247         for (j = 0; j < ist->nb_filters; j++) {
3248             if (ist->filters[j]->graph->graph_desc) {
3249                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3250                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3251                        ist->filters[j]->name);
3252                 if (nb_filtergraphs > 1)
3253                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3254                 av_log(NULL, AV_LOG_INFO, "\n");
3255             }
3256         }
3257     }
3258
3259     for (i = 0; i < nb_output_streams; i++) {
3260         ost = output_streams[i];
3261
3262         if (ost->attachment_filename) {
3263             /* an attached file */
3264             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3265                    ost->attachment_filename, ost->file_index, ost->index);
3266             continue;
3267         }
3268
3269         if (ost->filter && ost->filter->graph->graph_desc) {
3270             /* output from a complex graph */
3271             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3272             if (nb_filtergraphs > 1)
3273                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3274
3275             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3276                    ost->index, ost->enc ? ost->enc->name : "?");
3277             continue;
3278         }
3279
3280         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3281                input_streams[ost->source_index]->file_index,
3282                input_streams[ost->source_index]->st->index,
3283                ost->file_index,
3284                ost->index);
3285         if (ost->sync_ist != input_streams[ost->source_index])
3286             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3287                    ost->sync_ist->file_index,
3288                    ost->sync_ist->st->index);
3289         if (ost->stream_copy)
3290             av_log(NULL, AV_LOG_INFO, " (copy)");
3291         else
3292             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3293                    input_streams[ost->source_index]->dec->name : "?",
3294                    ost->enc ? ost->enc->name : "?");
3295         av_log(NULL, AV_LOG_INFO, "\n");
3296     }
3297
3298     if (ret) {
3299         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3300         return ret;
3301     }
3302
3303     if (want_sdp) {
3304         print_sdp();
3305     }
3306
3307     return 0;
3308 }
3309
3310 /*
3311  * The following code is the main loop of the file converter
3312  */
3313 static int transcode(void)
3314 {
3315     int ret, i;
3316     AVFormatContext *is, *os;
3317     OutputStream *ost;
3318     InputStream *ist;
3319     uint8_t *no_packet;
3320     int no_packet_count = 0;
3321     int64_t timer_start;
3322     int key;
3323
3324     if (!(no_packet = av_mallocz(nb_input_files)))
3325         exit_program(1);
3326
3327     ret = transcode_init();
3328     if (ret < 0)
3329         goto fail;
3330
3331     if (!using_stdin) {
3332         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3333     }
3334
3335     timer_start = av_gettime();
3336
3337     for (; received_sigterm == 0;) {
3338         int file_index, ist_index, past_recording_time = 1;
3339         AVPacket pkt;
3340         int64_t ipts_min;
3341         int64_t cur_time= av_gettime();
3342
3343         ipts_min = INT64_MAX;
3344         /* if 'q' pressed, exits */
3345         if (!using_stdin) {
3346             static int64_t last_time;
3347             if (received_nb_signals)
3348                 break;
3349             /* read_key() returns 0 on EOF */
3350             if(cur_time - last_time >= 100000 && !run_as_daemon){
3351                 key =  read_key();
3352                 last_time = cur_time;
3353             }else
3354                 key = -1;
3355             if (key == 'q')
3356                 break;
3357             if (key == '+') av_log_set_level(av_log_get_level()+10);
3358             if (key == '-') av_log_set_level(av_log_get_level()-10);
3359             if (key == 's') qp_hist     ^= 1;
3360             if (key == 'h'){
3361                 if (do_hex_dump){
3362                     do_hex_dump = do_pkt_dump = 0;
3363                 } else if(do_pkt_dump){
3364                     do_hex_dump = 1;
3365                 } else
3366                     do_pkt_dump = 1;
3367                 av_log_set_level(AV_LOG_DEBUG);
3368             }
3369             if (key == 'c' || key == 'C'){
3370                 char buf[4096], target[64], command[256], arg[256] = {0};
3371                 double time;
3372                 int k, n = 0;
3373                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3374                 i = 0;
3375                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3376                     if (k > 0)
3377                         buf[i++] = k;
3378                 buf[i] = 0;
3379                 if (k > 0 &&
3380                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3381                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3382                            target, time, command, arg);
3383                     for (i = 0; i < nb_filtergraphs; i++) {
3384                         FilterGraph *fg = filtergraphs[i];
3385                         if (fg->graph) {
3386                             if (time < 0) {
3387                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3388                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3389                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3390                             } else {
3391                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3392                             }
3393                         }
3394                     }
3395                 } else {
3396                     av_log(NULL, AV_LOG_ERROR,
3397                            "Parse error, at least 3 arguments were expected, "
3398                            "only %d given in string '%s'\n", n, buf);
3399                 }
3400             }
3401             if (key == 'd' || key == 'D'){
3402                 int debug=0;
3403                 if(key == 'D') {
3404                     debug = input_streams[0]->st->codec->debug<<1;
3405                     if(!debug) debug = 1;
3406                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3407                         debug += debug;
3408                 }else
3409                     if(scanf("%d", &debug)!=1)
3410                         fprintf(stderr,"error parsing debug value\n");
3411                 for(i=0;i<nb_input_streams;i++) {
3412                     input_streams[i]->st->codec->debug = debug;
3413                 }
3414                 for(i=0;i<nb_output_streams;i++) {
3415                     ost = output_streams[i];
3416                     ost->st->codec->debug = debug;
3417                 }
3418                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3419                 fprintf(stderr,"debug=%d\n", debug);
3420             }
3421             if (key == '?'){
3422                 fprintf(stderr, "key    function\n"
3423                                 "?      show this help\n"
3424                                 "+      increase verbosity\n"
3425                                 "-      decrease verbosity\n"
3426                                 "c      Send command to filtergraph\n"
3427                                 "D      cycle through available debug modes\n"
3428                                 "h      dump packets/hex press to cycle through the 3 states\n"
3429                                 "q      quit\n"
3430                                 "s      Show QP histogram\n"
3431                 );
3432             }
3433         }
3434
3435         /* check if there's any stream where output is still needed */
3436         for (i = 0; i < nb_output_streams; i++) {
3437             OutputFile *of;
3438             ost = output_streams[i];
3439             of  = output_files[ost->file_index];
3440             os  = output_files[ost->file_index]->ctx;
3441             if (ost->is_past_recording_time ||
3442                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3443                 continue;
3444             if (ost->frame_number >= ost->max_frames) {
3445                 int j;
3446                 for (j = 0; j < of->ctx->nb_streams; j++)
3447                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3448                 continue;
3449             }
3450             past_recording_time = 0;
3451         }
3452         if (past_recording_time)
3453             break;
3454
3455         /* select the stream that we must read now by looking at the
3456            smallest output pts */
3457         file_index = -1;
3458         for (i = 0; i < nb_input_streams; i++) {
3459             int64_t ipts;
3460             ist = input_streams[i];
3461             ipts = ist->pts;
3462             if (ist->discard || no_packet[ist->file_index])
3463                 continue;
3464             if (!input_files[ist->file_index]->eof_reached) {
3465                 if (ipts < ipts_min) {
3466                     ipts_min = ipts;
3467                     file_index = ist->file_index;
3468                 }
3469             }
3470         }
3471         /* if none, if is finished */
3472         if (file_index < 0) {
3473             if (no_packet_count) {
3474                 no_packet_count = 0;
3475                 memset(no_packet, 0, nb_input_files);
3476                 usleep(10000);
3477                 continue;
3478             }
3479             break;
3480         }
3481
3482         /* read a frame from it and output it in the fifo */
3483         is  = input_files[file_index]->ctx;
3484         ret = av_read_frame(is, &pkt);
3485         if (ret == AVERROR(EAGAIN)) {
3486             no_packet[file_index] = 1;
3487             no_packet_count++;
3488             continue;
3489         }
3490         if (ret < 0) {
3491             input_files[file_index]->eof_reached = 1;
3492
3493             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3494                 ist = input_streams[input_files[file_index]->ist_index + i];
3495                 if (ist->decoding_needed)
3496                     output_packet(ist, NULL);
3497             }
3498
3499             if (opt_shortest)
3500                 break;
3501             else
3502                 continue;
3503         }
3504
3505         no_packet_count = 0;
3506         memset(no_packet, 0, nb_input_files);
3507
3508         if (do_pkt_dump) {
3509             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3510                              is->streams[pkt.stream_index]);
3511         }
3512         /* the following test is needed in case new streams appear
3513            dynamically in stream : we ignore them */
3514         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3515             goto discard_packet;
3516         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3517         ist = input_streams[ist_index];
3518         if (ist->discard)
3519             goto discard_packet;
3520
3521         if (pkt.dts != AV_NOPTS_VALUE)
3522             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3523         if (pkt.pts != AV_NOPTS_VALUE)
3524             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3525
3526         if (pkt.pts != AV_NOPTS_VALUE)
3527             pkt.pts *= ist->ts_scale;
3528         if (pkt.dts != AV_NOPTS_VALUE)
3529             pkt.dts *= ist->ts_scale;
3530
3531         if (debug_ts) {
3532             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3533                     "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",
3534                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3535                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3536                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3537                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3538                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3539                     input_files[ist->file_index]->ts_offset);
3540         }
3541
3542         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3543             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3544             int64_t delta   = pkt_dts - ist->next_dts;
3545             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3546             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3547                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3548                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3549                 pkt_dts+1<ist->pts){
3550                 input_files[ist->file_index]->ts_offset -= delta;
3551                 av_log(NULL, AV_LOG_DEBUG,
3552                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3553                        delta, input_files[ist->file_index]->ts_offset);
3554                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3555                 if (pkt.pts != AV_NOPTS_VALUE)
3556                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3557             }
3558             } else {
3559                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3560                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3561                      pkt_dts+1<ist->pts){
3562                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3563                     pkt.dts = AV_NOPTS_VALUE;
3564                 }
3565                 if (pkt.pts != AV_NOPTS_VALUE){
3566                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3567                     delta   = pkt_pts - ist->next_dts;
3568                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3569                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3570                         pkt_pts+1<ist->pts) {
3571                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3572                         pkt.pts = AV_NOPTS_VALUE;
3573                     }
3574                 }
3575             }
3576         }
3577
3578         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3579         if ((ret = output_packet(ist, &pkt)) < 0 ||
3580             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3581             char buf[128];
3582             av_strerror(ret, buf, sizeof(buf));
3583             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3584                    ist->file_index, ist->st->index, buf);
3585             if (exit_on_error)
3586                 exit_program(1);
3587             av_free_packet(&pkt);
3588             continue;
3589         }
3590
3591     discard_packet:
3592         av_free_packet(&pkt);
3593
3594         /* dump report by using the output first video and audio streams */
3595         print_report(0, timer_start, cur_time);
3596     }
3597
3598     /* at the end of stream, we must flush the decoder buffers */
3599     for (i = 0; i < nb_input_streams; i++) {
3600         ist = input_streams[i];
3601         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3602             output_packet(ist, NULL);
3603         }
3604     }
3605     poll_filters();
3606     flush_encoders();
3607
3608     term_exit();
3609
3610     /* write the trailer if needed and close file */
3611     for (i = 0; i < nb_output_files; i++) {
3612         os = output_files[i]->ctx;
3613         av_write_trailer(os);
3614     }
3615
3616     /* dump report by using the first video and audio streams */
3617     print_report(1, timer_start, av_gettime());
3618
3619     /* close each encoder */
3620     for (i = 0; i < nb_output_streams; i++) {
3621         ost = output_streams[i];
3622         if (ost->encoding_needed) {
3623             av_freep(&ost->st->codec->stats_in);
3624             avcodec_close(ost->st->codec);
3625         }
3626     }
3627
3628     /* close each decoder */
3629     for (i = 0; i < nb_input_streams; i++) {
3630         ist = input_streams[i];
3631         if (ist->decoding_needed) {
3632             avcodec_close(ist->st->codec);
3633         }
3634     }
3635
3636     /* finished ! */
3637     ret = 0;
3638
3639  fail:
3640     av_freep(&no_packet);
3641
3642     if (output_streams) {
3643         for (i = 0; i < nb_output_streams; i++) {
3644             ost = output_streams[i];
3645             if (ost) {
3646                 if (ost->stream_copy)
3647                     av_freep(&ost->st->codec->extradata);
3648                 if (ost->logfile) {
3649                     fclose(ost->logfile);
3650                     ost->logfile = NULL;
3651                 }
3652                 av_freep(&ost->st->codec->subtitle_header);
3653                 av_free(ost->forced_kf_pts);
3654                 av_dict_free(&ost->opts);
3655             }
3656         }
3657     }
3658     return ret;
3659 }
3660
3661 static int opt_frame_crop(const char *opt, const char *arg)
3662 {
3663     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3664     return AVERROR(EINVAL);
3665 }
3666
3667 static int opt_pad(const char *opt, const char *arg)
3668 {
3669     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3670     return -1;
3671 }
3672
3673 static int opt_video_channel(const char *opt, const char *arg)
3674 {
3675     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3676     return opt_default("channel", arg);
3677 }
3678
3679 static int opt_video_standard(const char *opt, const char *arg)
3680 {
3681     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3682     return opt_default("standard", arg);
3683 }
3684
3685 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3686 {
3687     audio_codec_name = arg;
3688     return parse_option(o, "codec:a", arg, options);
3689 }
3690
3691 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3692 {
3693     video_codec_name = arg;
3694     return parse_option(o, "codec:v", arg, options);
3695 }
3696
3697 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3698 {
3699     subtitle_codec_name = arg;
3700     return parse_option(o, "codec:s", arg, options);
3701 }
3702
3703 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3704 {
3705     return parse_option(o, "codec:d", arg, options);
3706 }
3707
3708 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3709 {
3710     StreamMap *m = NULL;
3711     int i, negative = 0, file_idx;
3712     int sync_file_idx = -1, sync_stream_idx = 0;
3713     char *p, *sync;
3714     char *map;
3715
3716     if (*arg == '-') {
3717         negative = 1;
3718         arg++;
3719     }
3720     map = av_strdup(arg);
3721
3722     /* parse sync stream first, just pick first matching stream */
3723     if (sync = strchr(map, ',')) {
3724         *sync = 0;
3725         sync_file_idx = strtol(sync + 1, &sync, 0);
3726         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3727             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3728             exit_program(1);
3729         }
3730         if (*sync)
3731             sync++;
3732         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3733             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3734                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3735                 sync_stream_idx = i;
3736                 break;
3737             }
3738         if (i == input_files[sync_file_idx]->nb_streams) {
3739             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3740                                        "match any streams.\n", arg);
3741             exit_program(1);
3742         }
3743     }
3744
3745
3746     if (map[0] == '[') {
3747         /* this mapping refers to lavfi output */
3748         const char *c = map + 1;
3749         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3750                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3751         m = &o->stream_maps[o->nb_stream_maps - 1];
3752         m->linklabel = av_get_token(&c, "]");
3753         if (!m->linklabel) {
3754             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3755             exit_program(1);
3756         }
3757     } else {
3758         file_idx = strtol(map, &p, 0);
3759         if (file_idx >= nb_input_files || file_idx < 0) {
3760             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3761             exit_program(1);
3762         }
3763         if (negative)
3764             /* disable some already defined maps */
3765             for (i = 0; i < o->nb_stream_maps; i++) {
3766                 m = &o->stream_maps[i];
3767                 if (file_idx == m->file_index &&
3768                     check_stream_specifier(input_files[m->file_index]->ctx,
3769                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3770                                            *p == ':' ? p + 1 : p) > 0)
3771                     m->disabled = 1;
3772             }
3773         else
3774             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3775                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3776                             *p == ':' ? p + 1 : p) <= 0)
3777                     continue;
3778                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3779                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3780                 m = &o->stream_maps[o->nb_stream_maps - 1];
3781
3782                 m->file_index   = file_idx;
3783                 m->stream_index = i;
3784
3785                 if (sync_file_idx >= 0) {
3786                     m->sync_file_index   = sync_file_idx;
3787                     m->sync_stream_index = sync_stream_idx;
3788                 } else {
3789                     m->sync_file_index   = file_idx;
3790                     m->sync_stream_index = i;
3791                 }
3792             }
3793     }
3794
3795     if (!m) {
3796         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3797         exit_program(1);
3798     }
3799
3800     av_freep(&map);
3801     return 0;
3802 }
3803
3804 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3805 {
3806     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3807                                 &o->nb_attachments, o->nb_attachments + 1);
3808     o->attachments[o->nb_attachments - 1] = arg;
3809     return 0;
3810 }
3811
3812 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3813 {
3814     int n;
3815     AVStream *st;
3816     AudioChannelMap *m;
3817
3818     o->audio_channel_maps =
3819         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3820                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3821     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3822
3823     /* muted channel syntax */
3824     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3825     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3826         m->file_idx = m->stream_idx = -1;
3827         if (n == 1)
3828             m->ofile_idx = m->ostream_idx = -1;
3829         return 0;
3830     }
3831
3832     /* normal syntax */
3833     n = sscanf(arg, "%d.%d.%d:%d.%d",
3834                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3835                &m->ofile_idx, &m->ostream_idx);
3836
3837     if (n != 3 && n != 5) {
3838         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3839                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3840         exit_program(1);
3841     }
3842
3843     if (n != 5) // only file.stream.channel specified
3844         m->ofile_idx = m->ostream_idx = -1;
3845
3846     /* check input */
3847     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3848         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3849                m->file_idx);
3850         exit_program(1);
3851     }
3852     if (m->stream_idx < 0 ||
3853         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3854         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3855                m->file_idx, m->stream_idx);
3856         exit_program(1);
3857     }
3858     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3859     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3860         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3861                m->file_idx, m->stream_idx);
3862         exit_program(1);
3863     }
3864     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3865         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3866                m->file_idx, m->stream_idx, m->channel_idx);
3867         exit_program(1);
3868     }
3869     return 0;
3870 }
3871
3872 /**
3873  * Parse a metadata specifier in arg.
3874  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3875  * @param index for type c/p, chapter/program index is written here
3876  * @param stream_spec for type s, the stream specifier is written here
3877  */
3878 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3879 {
3880     if (*arg) {
3881         *type = *arg;
3882         switch (*arg) {
3883         case 'g':
3884             break;
3885         case 's':
3886             if (*(++arg) && *arg != ':') {
3887                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3888                 exit_program(1);
3889             }
3890             *stream_spec = *arg == ':' ? arg + 1 : "";
3891             break;
3892         case 'c':
3893         case 'p':
3894             if (*(++arg) == ':')
3895                 *index = strtol(++arg, NULL, 0);
3896             break;
3897         default:
3898             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3899             exit_program(1);
3900         }
3901     } else
3902         *type = 'g';
3903 }
3904
3905 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3906 {
3907     AVDictionary **meta_in = NULL;
3908     AVDictionary **meta_out = NULL;
3909     int i, ret = 0;
3910     char type_in, type_out;
3911     const char *istream_spec = NULL, *ostream_spec = NULL;
3912     int idx_in = 0, idx_out = 0;
3913
3914     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3915     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3916
3917     if (!ic) {
3918         if (type_out == 'g' || !*outspec)
3919             o->metadata_global_manual = 1;
3920         if (type_out == 's' || !*outspec)
3921             o->metadata_streams_manual = 1;
3922         if (type_out == 'c' || !*outspec)
3923             o->metadata_chapters_manual = 1;
3924         return 0;
3925     }
3926
3927     if (type_in == 'g' || type_out == 'g')
3928         o->metadata_global_manual = 1;
3929     if (type_in == 's' || type_out == 's')
3930         o->metadata_streams_manual = 1;
3931     if (type_in == 'c' || type_out == 'c')
3932         o->metadata_chapters_manual = 1;
3933
3934 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3935     if ((index) < 0 || (index) >= (nb_elems)) {\
3936         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3937                 (desc), (index));\
3938         exit_program(1);\
3939     }
3940
3941 #define SET_DICT(type, meta, context, index)\
3942         switch (type) {\
3943         case 'g':\
3944             meta = &context->metadata;\
3945             break;\
3946         case 'c':\
3947             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3948             meta = &context->chapters[index]->metadata;\
3949             break;\
3950         case 'p':\
3951             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3952             meta = &context->programs[index]->metadata;\
3953             break;\
3954         }\
3955
3956     SET_DICT(type_in, meta_in, ic, idx_in);
3957     SET_DICT(type_out, meta_out, oc, idx_out);
3958
3959     /* for input streams choose first matching stream */
3960     if (type_in == 's') {
3961         for (i = 0; i < ic->nb_streams; i++) {
3962             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3963                 meta_in = &ic->streams[i]->metadata;
3964                 break;
3965             } else if (ret < 0)
3966                 exit_program(1);
3967         }
3968         if (!meta_in) {
3969             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3970             exit_program(1);
3971         }
3972     }
3973
3974     if (type_out == 's') {
3975         for (i = 0; i < oc->nb_streams; i++) {
3976             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3977                 meta_out = &oc->streams[i]->metadata;
3978                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3979             } else if (ret < 0)
3980                 exit_program(1);
3981         }
3982     } else
3983         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3984
3985     return 0;
3986 }
3987
3988 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3989 {
3990     char buf[128];
3991     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3992     struct tm time = *gmtime((time_t*)&recording_timestamp);
3993     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3994     parse_option(o, "metadata", buf, options);
3995
3996     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3997                                  "tag instead.\n", opt);
3998     return 0;
3999 }
4000
4001 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4002 {
4003     const char *codec_string = encoder ? "encoder" : "decoder";
4004     AVCodec *codec;
4005
4006     codec = encoder ?
4007         avcodec_find_encoder_by_name(name) :
4008         avcodec_find_decoder_by_name(name);
4009     if (!codec) {
4010         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4011         exit_program(1);
4012     }
4013     if (codec->type != type) {
4014         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4015         exit_program(1);
4016     }
4017     return codec;
4018 }
4019
4020 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4021 {
4022     char *codec_name = NULL;
4023
4024     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4025     if (codec_name) {
4026         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4027         st->codec->codec_id = codec->id;
4028         return codec;
4029     } else
4030         return avcodec_find_decoder(st->codec->codec_id);
4031 }
4032
4033 /**
4034  * Add all the streams from the given input file to the global
4035  * list of input streams.
4036  */
4037 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4038 {
4039     int i;
4040     char *next, *codec_tag = NULL;
4041
4042     for (i = 0; i < ic->nb_streams; i++) {
4043         AVStream *st = ic->streams[i];
4044         AVCodecContext *dec = st->codec;
4045         InputStream *ist = av_mallocz(sizeof(*ist));
4046         char *framerate = NULL;
4047
4048         if (!ist)
4049             exit_program(1);
4050
4051         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4052         input_streams[nb_input_streams - 1] = ist;
4053
4054         ist->st = st;
4055         ist->file_index = nb_input_files;
4056         ist->discard = 1;
4057         st->discard  = AVDISCARD_ALL;
4058         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4059
4060         ist->ts_scale = 1.0;
4061         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4062
4063         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4064         if (codec_tag) {
4065             uint32_t tag = strtol(codec_tag, &next, 0);
4066             if (*next)
4067                 tag = AV_RL32(codec_tag);
4068             st->codec->codec_tag = tag;
4069         }
4070
4071         ist->dec = choose_decoder(o, ic, st);
4072
4073         switch (dec->codec_type) {
4074         case AVMEDIA_TYPE_VIDEO:
4075             if(!ist->dec)
4076                 ist->dec = avcodec_find_decoder(dec->codec_id);
4077             if (dec->lowres) {
4078                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4079             }
4080
4081             ist->resample_height  = dec->height;
4082             ist->resample_width   = dec->width;
4083             ist->resample_pix_fmt = dec->pix_fmt;
4084
4085             MATCH_PER_STREAM_OPT(frame_rates, str, framerate, ic, st);
4086             if (framerate && av_parse_video_rate(&ist->framerate,
4087                                                  framerate) < 0) {
4088                 av_log(NULL, AV_LOG_ERROR, "Error parsing framerate %s.\n",
4089                        framerate);
4090                 exit_program(1);
4091             }
4092
4093             ist->top_field_first = -1;
4094             MATCH_PER_STREAM_OPT(top_field_first, i, ist->top_field_first, ic, st);
4095
4096             break;
4097         case AVMEDIA_TYPE_AUDIO:
4098             guess_input_channel_layout(ist);
4099
4100             ist->resample_sample_fmt     = dec->sample_fmt;
4101             ist->resample_sample_rate    = dec->sample_rate;
4102             ist->resample_channels       = dec->channels;
4103             ist->resample_channel_layout = dec->channel_layout;
4104
4105             break;
4106         case AVMEDIA_TYPE_DATA:
4107         case AVMEDIA_TYPE_SUBTITLE:
4108             if(!ist->dec)
4109                 ist->dec = avcodec_find_decoder(dec->codec_id);
4110             break;
4111         case AVMEDIA_TYPE_ATTACHMENT:
4112         case AVMEDIA_TYPE_UNKNOWN:
4113             break;
4114         default:
4115             abort();
4116         }
4117     }
4118 }
4119
4120 static void assert_file_overwrite(const char *filename)
4121 {
4122     if ((!file_overwrite || no_file_overwrite) &&
4123         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4124          av_strstart(filename, "file:", NULL))) {
4125         if (avio_check(filename, 0) == 0) {
4126             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4127                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4128                 fflush(stderr);
4129                 term_exit();
4130                 signal(SIGINT, SIG_DFL);
4131                 if (!read_yesno()) {
4132                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4133                     exit_program(1);
4134                 }
4135                 term_init();
4136             }
4137             else {
4138                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4139                 exit_program(1);
4140             }
4141         }
4142     }
4143 }
4144
4145 static void dump_attachment(AVStream *st, const char *filename)
4146 {
4147     int ret;
4148     AVIOContext *out = NULL;
4149     AVDictionaryEntry *e;
4150
4151     if (!st->codec->extradata_size) {
4152         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4153                nb_input_files - 1, st->index);
4154         return;
4155     }
4156     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4157         filename = e->value;
4158     if (!*filename) {
4159         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4160                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4161         exit_program(1);
4162     }
4163
4164     assert_file_overwrite(filename);
4165
4166     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4167         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4168                filename);
4169         exit_program(1);
4170     }
4171
4172     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4173     avio_flush(out);
4174     avio_close(out);
4175 }
4176
4177 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4178 {
4179     AVFormatContext *ic;
4180     AVInputFormat *file_iformat = NULL;
4181     int err, i, ret;
4182     int64_t timestamp;
4183     uint8_t buf[128];
4184     AVDictionary **opts;
4185     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4186
4187     if (o->format) {
4188         if (!(file_iformat = av_find_input_format(o->format))) {
4189             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4190             exit_program(1);
4191         }
4192     }
4193
4194     if (!strcmp(filename, "-"))
4195         filename = "pipe:";
4196
4197     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4198                     !strcmp(filename, "/dev/stdin");
4199
4200     /* get default parameters from command line */
4201     ic = avformat_alloc_context();
4202     if (!ic) {
4203         print_error(filename, AVERROR(ENOMEM));
4204         exit_program(1);
4205     }
4206     if (o->nb_audio_sample_rate) {
4207         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4208         av_dict_set(&format_opts, "sample_rate", buf, 0);
4209     }
4210     if (o->nb_audio_channels) {
4211         /* because we set audio_channels based on both the "ac" and
4212          * "channel_layout" options, we need to check that the specified
4213          * demuxer actually has the "channels" option before setting it */
4214         if (file_iformat && file_iformat->priv_class &&
4215             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4216                         AV_OPT_SEARCH_FAKE_OBJ)) {
4217             snprintf(buf, sizeof(buf), "%d",
4218                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4219             av_dict_set(&format_opts, "channels", buf, 0);
4220         }
4221     }
4222     if (o->nb_frame_rates) {
4223         /* set the format-level framerate option;
4224          * this is important for video grabbers, e.g. x11 */
4225         if (file_iformat && file_iformat->priv_class &&
4226             av_opt_find(&file_iformat->priv_class, "framerate", NULL, 0,
4227                         AV_OPT_SEARCH_FAKE_OBJ)) {
4228             av_dict_set(&format_opts, "framerate",
4229                         o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4230         }
4231     }
4232     if (o->nb_frame_sizes) {
4233         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4234     }
4235     if (o->nb_frame_pix_fmts)
4236         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4237
4238     ic->video_codec_id   = video_codec_name ?
4239         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4240     ic->audio_codec_id   = audio_codec_name ?
4241         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4242     ic->subtitle_codec_id= subtitle_codec_name ?
4243         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4244     ic->flags |= AVFMT_FLAG_NONBLOCK;
4245     ic->interrupt_callback = int_cb;
4246
4247     /* open the input file with generic avformat function */
4248     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4249     if (err < 0) {
4250         print_error(filename, err);
4251         exit_program(1);
4252     }
4253     assert_avoptions(format_opts);
4254
4255     /* apply forced codec ids */
4256     for (i = 0; i < ic->nb_streams; i++)