Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/dict.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/pixdesc.h"
48 #include "libavutil/avstring.h"
49 #include "libavutil/libm.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/timestamp.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 # include "libavfilter/avcodec.h"
58 # include "libavfilter/avfilter.h"
59 # include "libavfilter/avfiltergraph.h"
60 # include "libavfilter/buffersink.h"
61 # include "libavfilter/buffersrc.h"
62
63 #if HAVE_SYS_RESOURCE_H
64 #include <sys/types.h>
65 #include <sys/time.h>
66 #include <sys/resource.h>
67 #elif HAVE_GETPROCESSTIMES
68 #include <windows.h>
69 #endif
70 #if HAVE_GETPROCESSMEMORYINFO
71 #include <windows.h>
72 #include <psapi.h>
73 #endif
74
75 #if HAVE_SYS_SELECT_H
76 #include <sys/select.h>
77 #endif
78
79 #if HAVE_TERMIOS_H
80 #include <fcntl.h>
81 #include <sys/ioctl.h>
82 #include <sys/time.h>
83 #include <termios.h>
84 #elif HAVE_KBHIT
85 #include <conio.h>
86 #endif
87 #include <time.h>
88
89 #include "cmdutils.h"
90
91 #include "libavutil/avassert.h"
92
93 #define VSYNC_AUTO       -1
94 #define VSYNC_PASSTHROUGH 0
95 #define VSYNC_CFR         1
96 #define VSYNC_VFR         2
97 #define VSYNC_DROP        0xff
98
99 const char program_name[] = "ffmpeg";
100 const int program_birth_year = 2000;
101
102 /* select an input stream for an output stream */
103 typedef struct StreamMap {
104     int disabled;           /** 1 is this mapping is disabled by a negative map */
105     int file_index;
106     int stream_index;
107     int sync_file_index;
108     int sync_stream_index;
109     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
110 } StreamMap;
111
112 typedef struct {
113     int  file_idx,  stream_idx,  channel_idx; // input
114     int ofile_idx, ostream_idx;               // output
115 } AudioChannelMap;
116
117 static const OptionDef options[];
118
119 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
120
121 static int frame_bits_per_raw_sample = 0;
122 static int video_discard = 0;
123 static int same_quant = 0;
124 static int do_deinterlace = 0;
125 static int intra_dc_precision = 8;
126 static int qp_hist = 0;
127 static int intra_only = 0;
128 static const char *video_codec_name    = NULL;
129 static const char *audio_codec_name    = NULL;
130 static const char *subtitle_codec_name = NULL;
131
132 static int file_overwrite = 0;
133 static int no_file_overwrite = 0;
134 static int do_benchmark = 0;
135 static int do_benchmark_all = 0;
136 static int do_hex_dump = 0;
137 static int do_pkt_dump = 0;
138 static int do_psnr = 0;
139 static int do_pass = 0;
140 static const char *pass_logfilename_prefix;
141 static int video_sync_method = VSYNC_AUTO;
142 static int audio_sync_method = 0;
143 static float audio_drift_threshold = 0.1;
144 static int copy_ts = 0;
145 static int copy_tb = -1;
146 static int opt_shortest = 0;
147 static char *vstats_filename;
148 static FILE *vstats_file;
149
150 static int audio_volume = 256;
151
152 static int exit_on_error = 0;
153 static int using_stdin = 0;
154 static int run_as_daemon  = 0;
155 static volatile int received_nb_signals = 0;
156 static int64_t video_size = 0;
157 static int64_t audio_size = 0;
158 static int64_t extra_size = 0;
159 static int nb_frames_dup = 0;
160 static int nb_frames_drop = 0;
161 static int input_sync;
162
163 static float dts_delta_threshold = 10;
164 static float dts_error_threshold = 3600*30;
165
166 static int print_stats = 1;
167 static int debug_ts = 0;
168 static int current_time;
169
170 static uint8_t *audio_buf;
171 static unsigned int allocated_audio_buf_size;
172 static uint8_t *async_buf;
173 static unsigned int allocated_async_buf_size;
174
175 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
176
177 typedef struct InputFilter {
178     AVFilterContext    *filter;
179     struct InputStream *ist;
180     struct FilterGraph *graph;
181 } InputFilter;
182
183 typedef struct OutputFilter {
184     AVFilterContext     *filter;
185     struct OutputStream *ost;
186     struct FilterGraph  *graph;
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
240     int resample_height;
241     int resample_width;
242     int resample_pix_fmt;
243
244     /* a pool of free buffers for decoded data */
245     FrameBuffer *buffer_pool;
246     int dr1;
247
248     /* decoded data from this stream goes into all those filters
249      * currently video only */
250     InputFilter **filters;
251     int        nb_filters;
252 } InputStream;
253
254 typedef struct InputFile {
255     AVFormatContext *ctx;
256     int eof_reached;      /* true if eof reached */
257     int ist_index;        /* index of first stream in input_streams */
258     int buffer_size;      /* current total buffer size */
259     int64_t ts_offset;
260     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
261                              from ctx.nb_streams if new streams appear during av_read_frame() */
262     int rate_emu;
263 } InputFile;
264
265 typedef struct OutputStream {
266     int file_index;          /* file index */
267     int index;               /* stream index in the output file */
268     int source_index;        /* InputStream index */
269     AVStream *st;            /* stream in the output file */
270     int encoding_needed;     /* true if encoding needed for this stream */
271     int frame_number;
272     /* input pts and corresponding output pts
273        for A/V sync */
274     struct InputStream *sync_ist; /* input stream to sync against */
275     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
276     AVBitStreamFilterContext *bitstream_filters;
277     AVCodec *enc;
278     int64_t max_frames;
279     AVFrame *output_frame;
280     AVFrame *filtered_frame;
281
282     /* video only */
283     AVRational frame_rate;
284     int force_fps;
285     int top_field_first;
286
287     float frame_aspect_ratio;
288     float last_quality;
289
290     /* forced key frames */
291     int64_t *forced_kf_pts;
292     int forced_kf_count;
293     int forced_kf_index;
294
295     /* audio only */
296     int audio_resample;
297     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
298     int audio_channels_mapped;           ///< number of channels in audio_channels_map
299     int resample_sample_fmt;
300     int resample_channels;
301     uint64_t resample_channel_layout;
302     int resample_sample_rate;
303     float rematrix_volume;
304     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
305     FILE *logfile;
306
307     SwrContext *swr;
308
309     OutputFilter *filter;
310     char *avfilter;
311
312     int64_t sws_flags;
313     int64_t swr_dither_method;
314     double swr_dither_scale;
315     AVDictionary *opts;
316     int is_past_recording_time;
317     int stream_copy;
318     const char *attachment_filename;
319     int copy_initial_nonkeyframes;
320
321     enum PixelFormat pix_fmts[2];
322 } OutputStream;
323
324
325 #if HAVE_TERMIOS_H
326
327 /* init terminal so that we can grab keys */
328 static struct termios oldtty;
329 static int restore_tty;
330 #endif
331
332 typedef struct OutputFile {
333     AVFormatContext *ctx;
334     AVDictionary *opts;
335     int ost_index;       /* index of the first stream in output_streams */
336     int64_t recording_time; /* desired length of the resulting file in microseconds */
337     int64_t start_time;     /* start time in microseconds */
338     uint64_t limit_filesize; /* filesize limit expressed in bytes */
339 } OutputFile;
340
341 static InputStream **input_streams = NULL;
342 static int        nb_input_streams = 0;
343 static InputFile   **input_files   = NULL;
344 static int        nb_input_files   = 0;
345
346 static OutputStream **output_streams = NULL;
347 static int         nb_output_streams = 0;
348 static OutputFile   **output_files   = NULL;
349 static int         nb_output_files   = 0;
350
351 static FilterGraph **filtergraphs;
352 int               nb_filtergraphs;
353
354 typedef struct OptionsContext {
355     /* input/output options */
356     int64_t start_time;
357     const char *format;
358
359     SpecifierOpt *codec_names;
360     int        nb_codec_names;
361     SpecifierOpt *audio_channels;
362     int        nb_audio_channels;
363     SpecifierOpt *audio_sample_rate;
364     int        nb_audio_sample_rate;
365     SpecifierOpt *rematrix_volume;
366     int        nb_rematrix_volume;
367     SpecifierOpt *frame_rates;
368     int        nb_frame_rates;
369     SpecifierOpt *frame_sizes;
370     int        nb_frame_sizes;
371     SpecifierOpt *frame_pix_fmts;
372     int        nb_frame_pix_fmts;
373
374     /* input options */
375     int64_t input_ts_offset;
376     int rate_emu;
377
378     SpecifierOpt *ts_scale;
379     int        nb_ts_scale;
380     SpecifierOpt *dump_attachment;
381     int        nb_dump_attachment;
382
383     /* output options */
384     StreamMap *stream_maps;
385     int     nb_stream_maps;
386     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
387     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
388     int metadata_global_manual;
389     int metadata_streams_manual;
390     int metadata_chapters_manual;
391     const char **attachments;
392     int       nb_attachments;
393
394     int chapters_input_file;
395
396     int64_t recording_time;
397     uint64_t limit_filesize;
398     float mux_preload;
399     float mux_max_delay;
400
401     int video_disable;
402     int audio_disable;
403     int subtitle_disable;
404     int data_disable;
405
406     /* indexed by output file stream index */
407     int   *streamid_map;
408     int nb_streamid_map;
409
410     SpecifierOpt *metadata;
411     int        nb_metadata;
412     SpecifierOpt *max_frames;
413     int        nb_max_frames;
414     SpecifierOpt *bitstream_filters;
415     int        nb_bitstream_filters;
416     SpecifierOpt *codec_tags;
417     int        nb_codec_tags;
418     SpecifierOpt *sample_fmts;
419     int        nb_sample_fmts;
420     SpecifierOpt *qscale;
421     int        nb_qscale;
422     SpecifierOpt *forced_key_frames;
423     int        nb_forced_key_frames;
424     SpecifierOpt *force_fps;
425     int        nb_force_fps;
426     SpecifierOpt *frame_aspect_ratios;
427     int        nb_frame_aspect_ratios;
428     SpecifierOpt *rc_overrides;
429     int        nb_rc_overrides;
430     SpecifierOpt *intra_matrices;
431     int        nb_intra_matrices;
432     SpecifierOpt *inter_matrices;
433     int        nb_inter_matrices;
434     SpecifierOpt *top_field_first;
435     int        nb_top_field_first;
436     SpecifierOpt *metadata_map;
437     int        nb_metadata_map;
438     SpecifierOpt *presets;
439     int        nb_presets;
440     SpecifierOpt *copy_initial_nonkeyframes;
441     int        nb_copy_initial_nonkeyframes;
442     SpecifierOpt *filters;
443     int        nb_filters;
444 } OptionsContext;
445
446 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
447 {\
448     int i, ret;\
449     for (i = 0; i < o->nb_ ## name; i++) {\
450         char *spec = o->name[i].specifier;\
451         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
452             outvar = o->name[i].u.type;\
453         else if (ret < 0)\
454             exit_program(1);\
455     }\
456 }
457
458 static int64_t getutime(void)
459 {
460 #if HAVE_GETRUSAGE
461     struct rusage rusage;
462
463     getrusage(RUSAGE_SELF, &rusage);
464     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
465 #elif HAVE_GETPROCESSTIMES
466     HANDLE proc;
467     FILETIME c, e, k, u;
468     proc = GetCurrentProcess();
469     GetProcessTimes(proc, &c, &e, &k, &u);
470     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
471 #else
472     return av_gettime();
473 #endif
474 }
475
476 static void update_benchmark(const char *fmt, ...)
477 {
478     if (do_benchmark_all) {
479         int64_t t = getutime();
480         va_list va;
481         char buf[1024];
482
483         if (fmt) {
484             va_start(va, fmt);
485             vsnprintf(buf, sizeof(buf), fmt, va);
486             va_end(va);
487             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
488         }
489         current_time = t;
490     }
491 }
492
493 static void reset_options(OptionsContext *o, int is_input)
494 {
495     const OptionDef *po = options;
496     OptionsContext bak= *o;
497     int i;
498
499     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
500     while (po->name) {
501         void *dst = (uint8_t*)o + po->u.off;
502
503         if (po->flags & OPT_SPEC) {
504             SpecifierOpt **so = dst;
505             int i, *count = (int*)(so + 1);
506             for (i = 0; i < *count; i++) {
507                 av_freep(&(*so)[i].specifier);
508                 if (po->flags & OPT_STRING)
509                     av_freep(&(*so)[i].u.str);
510             }
511             av_freep(so);
512             *count = 0;
513         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
514             av_freep(dst);
515         po++;
516     }
517
518     for (i = 0; i < o->nb_stream_maps; i++)
519         av_freep(&o->stream_maps[i].linklabel);
520     av_freep(&o->stream_maps);
521     av_freep(&o->audio_channel_maps);
522     av_freep(&o->streamid_map);
523
524     memset(o, 0, sizeof(*o));
525
526     if(is_input) o->recording_time = bak.recording_time;
527     else         o->recording_time = INT64_MAX;
528     o->mux_max_delay  = 0.7;
529     o->limit_filesize = UINT64_MAX;
530     o->chapters_input_file = INT_MAX;
531
532     uninit_opts();
533     init_opts();
534 }
535
536 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
537 {
538     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
539     int i, ret;
540     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
541     int h_chroma_shift, v_chroma_shift;
542     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
543     int w = s->width, h = s->height;
544
545     if (!buf)
546         return AVERROR(ENOMEM);
547
548     avcodec_align_dimensions(s, &w, &h);
549
550     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
551         w += 2*edge;
552         h += 2*edge;
553     }
554
555     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
556                               s->pix_fmt, 32)) < 0) {
557         av_freep(&buf);
558         return ret;
559     }
560     /* XXX this shouldn't be needed, but some tests break without this line
561      * those decoders are buggy and need to be fixed.
562      * the following tests fail:
563      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
564      */
565     memset(buf->base[0], 128, ret);
566
567     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
568     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
569         const int h_shift = i==0 ? 0 : h_chroma_shift;
570         const int v_shift = i==0 ? 0 : v_chroma_shift;
571         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
572             buf->data[i] = buf->base[i];
573         else
574             buf->data[i] = buf->base[i] +
575                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
576                                    (pixel_size*edge >> h_shift), 32);
577     }
578     buf->w       = s->width;
579     buf->h       = s->height;
580     buf->pix_fmt = s->pix_fmt;
581     buf->ist     = ist;
582
583     *pbuf = buf;
584     return 0;
585 }
586
587 static void free_buffer_pool(InputStream *ist)
588 {
589     FrameBuffer *buf = ist->buffer_pool;
590     while (buf) {
591         ist->buffer_pool = buf->next;
592         av_freep(&buf->base[0]);
593         av_free(buf);
594         buf = ist->buffer_pool;
595     }
596 }
597
598 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
599 {
600     av_assert0(buf->refcount > 0);
601     buf->refcount--;
602     if (!buf->refcount) {
603         FrameBuffer *tmp;
604         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
605             av_assert1(tmp != buf);
606         buf->next = ist->buffer_pool;
607         ist->buffer_pool = buf;
608     }
609 }
610
611 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
612 {
613     InputStream *ist = s->opaque;
614     FrameBuffer *buf;
615     int ret, i;
616
617     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
618         return -1;
619
620     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
621         return ret;
622
623     buf              = ist->buffer_pool;
624     ist->buffer_pool = buf->next;
625     buf->next        = NULL;
626     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
627         av_freep(&buf->base[0]);
628         av_free(buf);
629         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
630             return ret;
631     }
632     av_assert0(!buf->refcount);
633     buf->refcount++;
634
635     frame->opaque        = buf;
636     frame->type          = FF_BUFFER_TYPE_USER;
637     frame->extended_data = frame->data;
638     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
639     frame->width         = buf->w;
640     frame->height        = buf->h;
641     frame->format        = buf->pix_fmt;
642     frame->sample_aspect_ratio = s->sample_aspect_ratio;
643
644     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
645         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
646         frame->data[i]     = buf->data[i];
647         frame->linesize[i] = buf->linesize[i];
648     }
649
650     return 0;
651 }
652
653 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
654 {
655     InputStream *ist = s->opaque;
656     FrameBuffer *buf = frame->opaque;
657     int i;
658
659     if(frame->type!=FF_BUFFER_TYPE_USER)
660         return avcodec_default_release_buffer(s, frame);
661
662     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
663         frame->data[i] = NULL;
664
665     unref_buffer(ist, buf);
666 }
667
668 static void filter_release_buffer(AVFilterBuffer *fb)
669 {
670     FrameBuffer *buf = fb->priv;
671     av_free(fb);
672     unref_buffer(buf->ist, buf);
673 }
674
675 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
676 {
677     if (codec && codec->pix_fmts) {
678         const enum PixelFormat *p = codec->pix_fmts;
679         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
680         enum PixelFormat best= PIX_FMT_NONE;
681         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
682             if (st->codec->codec_id == CODEC_ID_MJPEG) {
683                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
684             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
685                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
686                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
687             }
688         }
689         for (; *p != PIX_FMT_NONE; p++) {
690             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
691             if (*p == target)
692                 break;
693         }
694         if (*p == PIX_FMT_NONE) {
695             if (target != PIX_FMT_NONE)
696                 av_log(NULL, AV_LOG_WARNING,
697                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
698                        av_pix_fmt_descriptors[target].name,
699                        codec->name,
700                        av_pix_fmt_descriptors[best].name);
701             return best;
702         }
703     }
704     return target;
705 }
706
707 static char *choose_pixel_fmts(OutputStream *ost)
708 {
709     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
710         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
711     } else if (ost->enc->pix_fmts) {
712         const enum PixelFormat *p;
713         AVIOContext *s = NULL;
714         uint8_t *ret;
715         int len;
716
717         if (avio_open_dyn_buf(&s) < 0)
718             exit_program(1);
719
720         p = ost->enc->pix_fmts;
721         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
722             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
724             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
725                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
726                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
727             }
728         }
729
730         for (; *p != PIX_FMT_NONE; p++)
731             avio_printf(s, "%s:", av_get_pix_fmt_name(*p));
732         len = avio_close_dyn_buf(s, &ret);
733         ret[len - 1] = 0;
734         return ret;
735     } else
736         return NULL;
737 }
738
739 static int configure_video_filters(FilterGraph *fg)
740 {
741     InputStream  *ist = fg->inputs[0]->ist;
742     OutputStream *ost = fg->outputs[0]->ost;
743     AVFilterContext *in_filter, *out_filter, *filter;
744     AVCodecContext *codec = ost->st->codec;
745     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
746     char *pix_fmts;
747     AVRational sample_aspect_ratio;
748     char args[255];
749     int ret;
750
751     avfilter_graph_free(&fg->graph);
752     fg->graph = avfilter_graph_alloc();
753     if (!fg->graph)
754         return AVERROR(ENOMEM);
755
756     if (ist->st->sample_aspect_ratio.num) {
757         sample_aspect_ratio = ist->st->sample_aspect_ratio;
758     } else
759         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
760
761     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
762              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
763              sample_aspect_ratio.num, sample_aspect_ratio.den, SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
764
765     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
766                                        avfilter_get_by_name("buffer"),
767                                        "src", args, NULL, fg->graph);
768     if (ret < 0)
769         return ret;
770
771 #if FF_API_OLD_VSINK_API
772     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
773                                        avfilter_get_by_name("buffersink"),
774                                        "out", NULL, NULL, fg->graph);
775 #else
776     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
777                                        avfilter_get_by_name("buffersink"),
778                                        "out", NULL, buffersink_params, fg->graph);
779 #endif
780     av_freep(&buffersink_params);
781
782     if (ret < 0)
783         return ret;
784     in_filter  = fg->inputs[0]->filter;
785     out_filter = fg->outputs[0]->filter;
786
787     if (codec->width || codec->height) {
788         snprintf(args, 255, "%d:%d:flags=0x%X",
789                  codec->width,
790                  codec->height,
791                  (unsigned)ost->sws_flags);
792         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
793                                                 NULL, args, NULL, fg->graph)) < 0)
794             return ret;
795         if ((ret = avfilter_link(in_filter, 0, filter, 0)) < 0)
796             return ret;
797         in_filter = filter;
798     }
799
800     if ((pix_fmts = choose_pixel_fmts(ost))) {
801         if ((ret = avfilter_graph_create_filter(&filter,
802                                                 avfilter_get_by_name("format"),
803                                                 "format", pix_fmts, NULL,
804                                                 fg->graph)) < 0)
805             return ret;
806         if ((ret = avfilter_link(filter, 0, out_filter, 0)) < 0)
807             return ret;
808
809         out_filter = filter;
810         av_freep(&pix_fmts);
811     }
812
813     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
814     fg->graph->scale_sws_opts = av_strdup(args);
815
816     if (ost->avfilter) {
817         AVFilterInOut *outputs = avfilter_inout_alloc();
818         AVFilterInOut *inputs  = avfilter_inout_alloc();
819
820         outputs->name    = av_strdup("in");
821         outputs->filter_ctx = in_filter;
822         outputs->pad_idx = 0;
823         outputs->next    = NULL;
824
825         inputs->name    = av_strdup("out");
826         inputs->filter_ctx = out_filter;
827         inputs->pad_idx = 0;
828         inputs->next    = NULL;
829
830         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
831             return ret;
832         av_freep(&ost->avfilter);
833     } else {
834         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
835             return ret;
836     }
837
838     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
839         return ret;
840
841     ost->filter = fg->outputs[0];
842
843     return 0;
844 }
845
846 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
847 {
848     FilterGraph *fg = av_mallocz(sizeof(*fg));
849
850     if (!fg)
851         exit_program(1);
852     fg->index = nb_filtergraphs;
853
854     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
855                              fg->nb_outputs + 1);
856     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
857         exit_program(1);
858     fg->outputs[0]->ost   = ost;
859     fg->outputs[0]->graph = fg;
860
861     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
862                             fg->nb_inputs + 1);
863     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
864         exit_program(1);
865     fg->inputs[0]->ist   = ist;
866     fg->inputs[0]->graph = fg;
867
868     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
869                               &ist->nb_filters, ist->nb_filters + 1);
870     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
871
872     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
873                               &nb_filtergraphs, nb_filtergraphs + 1);
874     filtergraphs[nb_filtergraphs - 1] = fg;
875
876     return fg;
877 }
878
879 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
880 {
881     InputStream *ist = NULL;
882     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
883     int i;
884
885     // TODO: support other filter types
886     if (type != AVMEDIA_TYPE_VIDEO) {
887         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
888         exit_program(1);
889     }
890
891     if (in->name) {
892         AVFormatContext *s;
893         AVStream       *st = NULL;
894         char *p;
895         int file_idx = strtol(in->name, &p, 0);
896
897         if (file_idx < 0 || file_idx >= nb_input_files) {
898             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
899                    file_idx, fg->graph_desc);
900             exit_program(1);
901         }
902         s = input_files[file_idx]->ctx;
903
904         for (i = 0; i < s->nb_streams; i++) {
905             if (s->streams[i]->codec->codec_type != type)
906                 continue;
907             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
908                 st = s->streams[i];
909                 break;
910             }
911         }
912         if (!st) {
913             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
914                    "matches no streams.\n", p, fg->graph_desc);
915             exit_program(1);
916         }
917         ist = input_streams[input_files[file_idx]->ist_index + st->index];
918     } else {
919         /* find the first unused stream of corresponding type */
920         for (i = 0; i < nb_input_streams; i++) {
921             ist = input_streams[i];
922             if (ist->st->codec->codec_type == type && ist->discard)
923                 break;
924         }
925         if (i == nb_input_streams) {
926             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
927                    "unlabeled input pad %d on filter %s", in->pad_idx,
928                    in->filter_ctx->name);
929             exit_program(1);
930         }
931     }
932     ist->discard         = 0;
933     ist->decoding_needed = 1;
934     ist->st->discard = AVDISCARD_NONE;
935
936     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
937                             &fg->nb_inputs, fg->nb_inputs + 1);
938     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
939         exit_program(1);
940     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
941     fg->inputs[fg->nb_inputs - 1]->graph = fg;
942
943     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
944                               &ist->nb_filters, ist->nb_filters + 1);
945     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
946 }
947
948 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
949 {
950     char *pix_fmts;
951     AVCodecContext *codec = ofilter->ost->st->codec;
952     AVFilterContext *last_filter = out->filter_ctx;
953     int pad_idx = out->pad_idx;
954     int ret;
955     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
956
957 #if FF_API_OLD_VSINK_API
958     ret = avfilter_graph_create_filter(&ofilter->filter,
959                                        avfilter_get_by_name("buffersink"),
960                                        "out", NULL, NULL, fg->graph);
961 #else
962     ret = avfilter_graph_create_filter(&ofilter->filter,
963                                        avfilter_get_by_name("buffersink"),
964                                        "out", NULL, buffersink_params, fg->graph);
965 #endif
966     av_freep(&buffersink_params);
967
968     if (ret < 0)
969         return ret;
970
971     if (codec->width || codec->height) {
972         char args[255];
973         AVFilterContext *filter;
974
975         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
976                  codec->width,
977                  codec->height,
978                  (unsigned)ofilter->ost->sws_flags);
979         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
980                                                 NULL, args, NULL, fg->graph)) < 0)
981             return ret;
982         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
983             return ret;
984
985         last_filter = filter;
986         pad_idx = 0;
987     }
988
989     if ((pix_fmts = choose_pixel_fmts(ofilter->ost))) {
990         AVFilterContext *filter;
991         if ((ret = avfilter_graph_create_filter(&filter,
992                                                 avfilter_get_by_name("format"),
993                                                 "format", pix_fmts, NULL,
994                                                 fg->graph)) < 0)
995             return ret;
996         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
997             return ret;
998
999         last_filter = filter;
1000         pad_idx     = 0;
1001         av_freep(&pix_fmts);
1002     }
1003
1004     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1005         return ret;
1006
1007     return 0;
1008 }
1009
1010 static int configure_complex_filter(FilterGraph *fg)
1011 {
1012     AVFilterInOut *inputs, *outputs, *cur;
1013     int ret, i, init = !fg->graph;
1014
1015     avfilter_graph_free(&fg->graph);
1016     if (!(fg->graph = avfilter_graph_alloc()))
1017         return AVERROR(ENOMEM);
1018
1019     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1020         return ret;
1021
1022     for (cur = inputs; init && cur; cur = cur->next)
1023         init_input_filter(fg, cur);
1024
1025     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1026         InputFilter *ifilter = fg->inputs[i];
1027         InputStream     *ist = ifilter->ist;
1028         AVRational       sar;
1029         char            args[255];
1030
1031         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1032                                                  ist->st->codec->sample_aspect_ratio;
1033         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1034                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1035                  sar.num, sar.den);
1036
1037         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1038                                                 avfilter_get_by_name("buffer"), cur->name,
1039                                                 args, NULL, fg->graph)) < 0)
1040             return ret;
1041         if ((ret = avfilter_link(ifilter->filter, 0,
1042                                  cur->filter_ctx, cur->pad_idx)) < 0)
1043             return ret;
1044     }
1045     avfilter_inout_free(&inputs);
1046
1047     if (!init) {
1048         /* we already know the mappings between lavfi outputs and output streams,
1049          * so we can finish the setup */
1050         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1051             configure_output_filter(fg, fg->outputs[i], cur);
1052         avfilter_inout_free(&outputs);
1053
1054         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1055             return ret;
1056     } else {
1057         /* wait until output mappings are processed */
1058         for (cur = outputs; cur;) {
1059             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1060                                      &fg->nb_outputs, fg->nb_outputs + 1);
1061             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1062                 exit_program(1);
1063             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1064             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1065             cur = cur->next;
1066             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1067         }
1068     }
1069
1070     return 0;
1071 }
1072
1073 static int configure_complex_filters(void)
1074 {
1075     int i, ret = 0;
1076
1077     for (i = 0; i < nb_filtergraphs; i++)
1078         if (!filtergraphs[i]->graph &&
1079             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1080             return ret;
1081     return 0;
1082 }
1083
1084 static int configure_filtergraph(FilterGraph *fg)
1085 {
1086     return fg->graph_desc ? configure_complex_filter(fg) : configure_video_filters(fg);
1087 }
1088
1089 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1090 {
1091     int i;
1092     for (i = 0; i < fg->nb_inputs; i++)
1093         if (fg->inputs[i]->ist == ist)
1094             return 1;
1095     return 0;
1096 }
1097
1098 static void term_exit(void)
1099 {
1100     av_log(NULL, AV_LOG_QUIET, "%s", "");
1101 #if HAVE_TERMIOS_H
1102     if(restore_tty)
1103         tcsetattr (0, TCSANOW, &oldtty);
1104 #endif
1105 }
1106
1107 static volatile int received_sigterm = 0;
1108
1109 static void sigterm_handler(int sig)
1110 {
1111     received_sigterm = sig;
1112     received_nb_signals++;
1113     term_exit();
1114     if(received_nb_signals > 3)
1115         exit(123);
1116 }
1117
1118 static void term_init(void)
1119 {
1120 #if HAVE_TERMIOS_H
1121     if(!run_as_daemon){
1122         struct termios tty;
1123
1124         if (tcgetattr (0, &tty) == 0) {
1125             oldtty = tty;
1126             restore_tty = 1;
1127             atexit(term_exit);
1128
1129             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1130                              |INLCR|IGNCR|ICRNL|IXON);
1131             tty.c_oflag |= OPOST;
1132             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1133             tty.c_cflag &= ~(CSIZE|PARENB);
1134             tty.c_cflag |= CS8;
1135             tty.c_cc[VMIN] = 1;
1136             tty.c_cc[VTIME] = 0;
1137
1138             tcsetattr (0, TCSANOW, &tty);
1139         }
1140         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1141     }
1142 #endif
1143     avformat_network_deinit();
1144
1145     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1146     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1147 #ifdef SIGXCPU
1148     signal(SIGXCPU, sigterm_handler);
1149 #endif
1150 }
1151
1152 /* read a key without blocking */
1153 static int read_key(void)
1154 {
1155     unsigned char ch;
1156 #if HAVE_TERMIOS_H
1157     int n = 1;
1158     struct timeval tv;
1159     fd_set rfds;
1160
1161     FD_ZERO(&rfds);
1162     FD_SET(0, &rfds);
1163     tv.tv_sec = 0;
1164     tv.tv_usec = 0;
1165     n = select(1, &rfds, NULL, NULL, &tv);
1166     if (n > 0) {
1167         n = read(0, &ch, 1);
1168         if (n == 1)
1169             return ch;
1170
1171         return n;
1172     }
1173 #elif HAVE_KBHIT
1174 #    if HAVE_PEEKNAMEDPIPE
1175     static int is_pipe;
1176     static HANDLE input_handle;
1177     DWORD dw, nchars;
1178     if(!input_handle){
1179         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1180         is_pipe = !GetConsoleMode(input_handle, &dw);
1181     }
1182
1183     if (stdin->_cnt > 0) {
1184         read(0, &ch, 1);
1185         return ch;
1186     }
1187     if (is_pipe) {
1188         /* When running under a GUI, you will end here. */
1189         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1190             return -1;
1191         //Read it
1192         if(nchars != 0) {
1193             read(0, &ch, 1);
1194             return ch;
1195         }else{
1196             return -1;
1197         }
1198     }
1199 #    endif
1200     if(kbhit())
1201         return(getch());
1202 #endif
1203     return -1;
1204 }
1205
1206 static int decode_interrupt_cb(void *ctx)
1207 {
1208     return received_nb_signals > 1;
1209 }
1210
1211 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1212
1213 void av_noreturn exit_program(int ret)
1214 {
1215     int i, j;
1216
1217     for (i = 0; i < nb_filtergraphs; i++) {
1218         avfilter_graph_free(&filtergraphs[i]->graph);
1219         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1220             av_freep(&filtergraphs[i]->inputs[j]);
1221         av_freep(&filtergraphs[i]->inputs);
1222         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1223             av_freep(&filtergraphs[i]->outputs[j]);
1224         av_freep(&filtergraphs[i]->outputs);
1225         av_freep(&filtergraphs[i]);
1226     }
1227     av_freep(&filtergraphs);
1228
1229     /* close files */
1230     for (i = 0; i < nb_output_files; i++) {
1231         AVFormatContext *s = output_files[i]->ctx;
1232         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1233             avio_close(s->pb);
1234         avformat_free_context(s);
1235         av_dict_free(&output_files[i]->opts);
1236         av_freep(&output_files[i]);
1237     }
1238     for (i = 0; i < nb_output_streams; i++) {
1239         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1240         while (bsfc) {
1241             AVBitStreamFilterContext *next = bsfc->next;
1242             av_bitstream_filter_close(bsfc);
1243             bsfc = next;
1244         }
1245         output_streams[i]->bitstream_filters = NULL;
1246
1247         if (output_streams[i]->output_frame) {
1248             AVFrame *frame = output_streams[i]->output_frame;
1249             if (frame->extended_data != frame->data)
1250                 av_freep(&frame->extended_data);
1251             av_freep(&frame);
1252         }
1253         av_freep(&output_streams[i]->filtered_frame);
1254         av_freep(&output_streams[i]);
1255     }
1256     for (i = 0; i < nb_input_files; i++) {
1257         avformat_close_input(&input_files[i]->ctx);
1258         av_freep(&input_files[i]);
1259     }
1260     for (i = 0; i < nb_input_streams; i++) {
1261         av_freep(&input_streams[i]->decoded_frame);
1262         av_dict_free(&input_streams[i]->opts);
1263         free_buffer_pool(input_streams[i]);
1264         av_freep(&input_streams[i]->filters);
1265         av_freep(&input_streams[i]);
1266     }
1267
1268     if (vstats_file)
1269         fclose(vstats_file);
1270     av_free(vstats_filename);
1271
1272     av_freep(&input_streams);
1273     av_freep(&input_files);
1274     av_freep(&output_streams);
1275     av_freep(&output_files);
1276
1277     uninit_opts();
1278     av_freep(&audio_buf);
1279     allocated_audio_buf_size = 0;
1280     av_freep(&async_buf);
1281     allocated_async_buf_size = 0;
1282
1283     avfilter_uninit();
1284     avformat_network_deinit();
1285
1286     if (received_sigterm) {
1287         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1288                (int) received_sigterm);
1289         exit (255);
1290     }
1291
1292     exit(ret); /* not all OS-es handle main() return value */
1293 }
1294
1295 static void assert_avoptions(AVDictionary *m)
1296 {
1297     AVDictionaryEntry *t;
1298     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1299         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1300         exit_program(1);
1301     }
1302 }
1303
1304 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1305 {
1306     const char *codec_string = encoder ? "encoder" : "decoder";
1307     AVCodec *codec;
1308     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1309         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1310         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1311                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1312                 codec_string, c->codec->name);
1313         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1314         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1315             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1316                    codec_string, codec->name);
1317         exit_program(1);
1318     }
1319 }
1320
1321 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1322 {
1323     if (codec && codec->sample_fmts) {
1324         const enum AVSampleFormat *p = codec->sample_fmts;
1325         for (; *p != -1; p++) {
1326             if (*p == st->codec->sample_fmt)
1327                 break;
1328         }
1329         if (*p == -1) {
1330             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1331                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1332             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1333             av_log(NULL, AV_LOG_WARNING,
1334                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1335                    av_get_sample_fmt_name(st->codec->sample_fmt),
1336                    codec->name,
1337                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1338             st->codec->sample_fmt = codec->sample_fmts[0];
1339         }
1340     }
1341 }
1342
1343 static void choose_sample_rate(AVStream *st, AVCodec *codec)
1344 {
1345     if (codec && codec->supported_samplerates) {
1346         const int *p  = codec->supported_samplerates;
1347         int best      = 0;
1348         int best_dist = INT_MAX;
1349         for (; *p; p++) {
1350             int dist = abs(st->codec->sample_rate - *p);
1351             if (dist < best_dist) {
1352                 best_dist = dist;
1353                 best      = *p;
1354             }
1355         }
1356         if (best_dist) {
1357             int i;
1358             const int *sample_rates = codec->supported_samplerates;
1359             av_log(st->codec, AV_LOG_WARNING,
1360                    "Requested sampling rate (%dHz) unsupported, using %dHz instead\n"
1361                    "Available sampling rates for %s:",
1362                    st->codec->sample_rate, best, codec->name);
1363             for (i = 0; sample_rates[i]; i++) {
1364                 if (!sample_rates[i + 1]) av_log(st->codec, AV_LOG_WARNING, " and");
1365                 else if (i)               av_log(st->codec, AV_LOG_WARNING, ",");
1366                 av_log(st->codec, AV_LOG_WARNING, " %d", sample_rates[i]);
1367             }
1368             av_log(st->codec, AV_LOG_WARNING, ".\n");
1369         }
1370         st->codec->sample_rate = best;
1371     }
1372 }
1373
1374 static double
1375 get_sync_ipts(const OutputStream *ost, int64_t pts)
1376 {
1377     OutputFile *of = output_files[ost->file_index];
1378     return (double)(pts - of->start_time) / AV_TIME_BASE;
1379 }
1380
1381 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1382 {
1383     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1384     AVCodecContext          *avctx = ost->st->codec;
1385     int ret;
1386
1387     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1388         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1389         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1390
1391     /*
1392      * Audio encoders may split the packets --  #frames in != #packets out.
1393      * But there is no reordering, so we can limit the number of output packets
1394      * by simply dropping them here.
1395      * Counting encoded video frames needs to be done separately because of
1396      * reordering, see do_video_out()
1397      */
1398     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1399         if (ost->frame_number >= ost->max_frames) {
1400             av_free_packet(pkt);
1401             return;
1402         }
1403         ost->frame_number++;
1404     }
1405
1406     while (bsfc) {
1407         AVPacket new_pkt = *pkt;
1408         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1409                                            &new_pkt.data, &new_pkt.size,
1410                                            pkt->data, pkt->size,
1411                                            pkt->flags & AV_PKT_FLAG_KEY);
1412         if (a > 0) {
1413             av_free_packet(pkt);
1414             new_pkt.destruct = av_destruct_packet;
1415         } else if (a < 0) {
1416             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1417                    bsfc->filter->name, pkt->stream_index,
1418                    avctx->codec ? avctx->codec->name : "copy");
1419             print_error("", a);
1420             if (exit_on_error)
1421                 exit_program(1);
1422         }
1423         *pkt = new_pkt;
1424
1425         bsfc = bsfc->next;
1426     }
1427
1428     pkt->stream_index = ost->index;
1429     ret = av_interleaved_write_frame(s, pkt);
1430     if (ret < 0) {
1431         print_error("av_interleaved_write_frame()", ret);
1432         exit_program(1);
1433     }
1434 }
1435
1436 static void get_default_channel_layouts(OutputStream *ost, InputStream *ist)
1437 {
1438     char layout_name[256];
1439     AVCodecContext *enc = ost->st->codec;
1440     AVCodecContext *dec = ist->st->codec;
1441
1442     if (dec->channel_layout &&
1443         av_get_channel_layout_nb_channels(dec->channel_layout) != dec->channels) {
1444         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1445                                      dec->channels, dec->channel_layout);
1446         av_log(NULL, AV_LOG_ERROR, "New channel layout (%s) is invalid\n",
1447                layout_name);
1448         dec->channel_layout = 0;
1449     }
1450     if (!dec->channel_layout) {
1451         if (enc->channel_layout && dec->channels == enc->channels) {
1452             dec->channel_layout = enc->channel_layout;
1453         } else {
1454             dec->channel_layout = av_get_default_channel_layout(dec->channels);
1455
1456             if (!dec->channel_layout) {
1457                 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1458                        "layout for Input Stream #%d.%d\n", ist->file_index,
1459                        ist->st->index);
1460                 exit_program(1);
1461             }
1462         }
1463         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1464                                      dec->channels, dec->channel_layout);
1465         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1466                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1467     }
1468     if (!enc->channel_layout) {
1469         if (dec->channels == enc->channels) {
1470             enc->channel_layout = dec->channel_layout;
1471             return;
1472         } else {
1473             enc->channel_layout = av_get_default_channel_layout(enc->channels);
1474         }
1475         if (!enc->channel_layout) {
1476             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel layout "
1477                    "for Output Stream #%d.%d\n", ost->file_index,
1478                    ost->st->index);
1479             exit_program(1);
1480         }
1481         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1482                                      enc->channels, enc->channel_layout);
1483         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Output Stream "
1484                "#%d.%d : %s\n", ost->file_index, ost->st->index, layout_name);
1485     }
1486 }
1487
1488 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1489 {
1490     int fill_char = 0x00;
1491     if (sample_fmt == AV_SAMPLE_FMT_U8)
1492         fill_char = 0x80;
1493     memset(buf, fill_char, size);
1494 }
1495
1496 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
1497                               const uint8_t *buf, int buf_size)
1498 {
1499     AVCodecContext *enc = ost->st->codec;
1500     AVFrame *frame = NULL;
1501     AVPacket pkt;
1502     int ret, got_packet;
1503
1504     av_init_packet(&pkt);
1505     pkt.data = NULL;
1506     pkt.size = 0;
1507
1508     if (buf && buf_size) {
1509         if (!ost->output_frame) {
1510             ost->output_frame = avcodec_alloc_frame();
1511             if (!ost->output_frame) {
1512                 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
1513                 exit_program(1);
1514             }
1515         }
1516         frame = ost->output_frame;
1517         if (frame->extended_data != frame->data)
1518             av_freep(&frame->extended_data);
1519         avcodec_get_frame_defaults(frame);
1520
1521         frame->nb_samples  = buf_size /
1522                              (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
1523         if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
1524                                             buf, buf_size, 1)) < 0) {
1525             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_fill_audio_frame)\n");
1526             exit_program(1);
1527         }
1528
1529         frame->pts = ost->sync_opts;
1530         ost->sync_opts += frame->nb_samples;
1531     }
1532
1533     got_packet = 0;
1534     update_benchmark(NULL);
1535     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1536         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1537         exit_program(1);
1538     }
1539     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1540
1541     ret = pkt.size;
1542
1543     if (got_packet) {
1544         if (pkt.pts != AV_NOPTS_VALUE)
1545             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1546         if (pkt.dts != AV_NOPTS_VALUE) {
1547             int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1548             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1549             if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt.dts) {
1550                 av_log(s, max - pkt.dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt.dts, max);
1551                 pkt.pts = pkt.dts = max;
1552             }
1553         }
1554         if (pkt.duration > 0)
1555             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1556
1557         write_frame(s, &pkt, ost);
1558
1559         audio_size += pkt.size;
1560
1561         av_free_packet(&pkt);
1562     }
1563
1564     if (debug_ts) {
1565         av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1566                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1567                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1568                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1569     }
1570
1571     return ret;
1572 }
1573
1574 static int alloc_audio_output_buf(AVCodecContext *dec, AVCodecContext *enc,
1575                                   int nb_samples, int *buf_linesize)
1576 {
1577     int64_t audio_buf_samples;
1578     int audio_buf_size;
1579
1580     /* calculate required number of samples to allocate */
1581     audio_buf_samples = ((int64_t)nb_samples * enc->sample_rate + dec->sample_rate) /
1582                         dec->sample_rate;
1583     audio_buf_samples = 4 * audio_buf_samples + 10000; // safety factors for resampling
1584     audio_buf_samples = FFMAX(audio_buf_samples, enc->frame_size);
1585     if (audio_buf_samples > INT_MAX)
1586         return AVERROR(EINVAL);
1587
1588     audio_buf_size = av_samples_get_buffer_size(buf_linesize, enc->channels,
1589                                                 audio_buf_samples,
1590                                                 enc->sample_fmt, 0);
1591     if (audio_buf_size < 0)
1592         return audio_buf_size;
1593
1594     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1595     if (!audio_buf)
1596         return AVERROR(ENOMEM);
1597
1598     return 0;
1599 }
1600
1601 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1602                          InputStream *ist, AVFrame *decoded_frame)
1603 {
1604     uint8_t *buftmp;
1605     int64_t size_out;
1606
1607     int frame_bytes, resample_changed;
1608     AVCodecContext *enc = ost->st->codec;
1609     AVCodecContext *dec = ist->st->codec;
1610     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1611     int isize = av_get_bytes_per_sample(dec->sample_fmt);
1612     uint8_t *buf[AV_NUM_DATA_POINTERS];
1613     int size     = decoded_frame->nb_samples * dec->channels * isize;
1614     int planes   = av_sample_fmt_is_planar(dec->sample_fmt) ? dec->channels : 1;
1615     int i;
1616     int out_linesize = 0;
1617
1618     av_assert0(planes <= AV_NUM_DATA_POINTERS);
1619
1620     for(i=0; i<planes; i++)
1621         buf[i]= decoded_frame->data[i];
1622
1623
1624     get_default_channel_layouts(ost, ist);
1625
1626     if (alloc_audio_output_buf(dec, enc, decoded_frame->nb_samples, &out_linesize) < 0) {
1627         av_log(NULL, AV_LOG_FATAL, "Error allocating audio buffer\n");
1628         exit_program(1);
1629     }
1630
1631     if (audio_sync_method > 1                      ||
1632         enc->channels       != dec->channels       ||
1633         enc->channel_layout != dec->channel_layout ||
1634         enc->sample_rate    != dec->sample_rate    ||
1635         dec->sample_fmt     != enc->sample_fmt)
1636         ost->audio_resample = 1;
1637
1638     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
1639                        ost->resample_channels    != dec->channels   ||
1640                        ost->resample_channel_layout != dec->channel_layout ||
1641                        ost->resample_sample_rate != dec->sample_rate;
1642
1643     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
1644
1645         if (resample_changed) {
1646             av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:0x%"PRIx64" to rate:%d fmt:%s ch:%d chl:0x%"PRIx64"\n",
1647                    ist->file_index, ist->st->index,
1648                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt),
1649                    ost->resample_channels, ost->resample_channel_layout,
1650                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt),
1651                    dec->channels, dec->channel_layout);
1652             ost->resample_sample_fmt  = dec->sample_fmt;
1653             ost->resample_channels    = dec->channels;
1654             ost->resample_channel_layout = dec->channel_layout;
1655             ost->resample_sample_rate = dec->sample_rate;
1656             swr_free(&ost->swr);
1657         }
1658         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1659         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
1660             ost->resample_sample_fmt  == enc->sample_fmt &&
1661             ost->resample_channels    == enc->channels   &&
1662             ost->resample_channel_layout == enc->channel_layout &&
1663             ost->resample_sample_rate == enc->sample_rate) {
1664             //ost->swr = NULL;
1665             ost->audio_resample = 0;
1666         } else {
1667             ost->swr = swr_alloc_set_opts(ost->swr,
1668                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
1669                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
1670                                           0, NULL);
1671             av_opt_set_int(ost->swr, "dither_method", ost->swr_dither_method,0);
1672             av_opt_set_double(ost->swr, "dither_scale", ost->swr_dither_scale,0);
1673             if (ost->audio_channels_mapped)
1674                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
1675             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
1676             if (ost->audio_channels_mapped) {
1677                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
1678                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
1679             }
1680             if (av_opt_set_int(ost->swr, "ich", dec->channels, 0) < 0) {
1681                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of input channels\n");
1682                 exit_program(1);
1683             }
1684             if (av_opt_set_int(ost->swr, "och", enc->channels, 0) < 0) {
1685                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of output channels\n");
1686                 exit_program(1);
1687             }
1688             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
1689             if(ost->swr && swr_init(ost->swr) < 0){
1690                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
1691                 swr_free(&ost->swr);
1692             }
1693
1694             if (!ost->swr) {
1695                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1696                         dec->channels, dec->sample_rate,
1697                         enc->channels, enc->sample_rate);
1698                 exit_program(1);
1699             }
1700         }
1701     }
1702
1703     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1704
1705     if (audio_sync_method > 0) {
1706         double delta = get_sync_ipts(ost, ist->pts) * enc->sample_rate - ost->sync_opts -
1707                        av_fifo_size(ost->fifo) / (enc->channels * osize);
1708         int idelta = delta * dec->sample_rate / enc->sample_rate;
1709         int byte_delta = idelta * isize * dec->channels;
1710
1711         // FIXME resample delay
1712         if (fabs(delta) > 50) {
1713             if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1714                 if (byte_delta < 0) {
1715                     byte_delta = FFMAX(byte_delta, -size);
1716                     size += byte_delta;
1717                     for (i=0; i<planes; i++)
1718                         buf[i]  -= byte_delta/planes;
1719                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1720                            -byte_delta / (isize * dec->channels));
1721                     if (!size)
1722                         return;
1723                     ist->is_start = 0;
1724                 } else {
1725                     av_fast_malloc(&async_buf, &allocated_async_buf_size,
1726                                    byte_delta + size);
1727                     if (!async_buf) {
1728                         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1729                         exit_program(1);
1730                     }
1731
1732                     if (alloc_audio_output_buf(dec, enc, decoded_frame->nb_samples + idelta, &out_linesize) < 0) {
1733                         av_log(NULL, AV_LOG_FATAL, "Error allocating audio buffer\n");
1734                         exit_program(1);
1735                     }
1736                     ist->is_start = 0;
1737
1738                     for (i=0; i<planes; i++) {
1739                         uint8_t *t = async_buf + i*((byte_delta + size)/planes);
1740                         generate_silence(t, dec->sample_fmt, byte_delta/planes);
1741                         memcpy(t + byte_delta/planes, buf[i], size/planes);
1742                         buf[i] = t;
1743                     }
1744                     size += byte_delta;
1745                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1746                 }
1747             } else if (audio_sync_method > 1) {
1748                 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1749                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1750                        delta, comp, enc->sample_rate);
1751 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
1752                 swr_set_compensation(ost->swr, comp, enc->sample_rate);
1753             }
1754         }
1755     } else if (audio_sync_method == 0)
1756         ost->sync_opts = lrintf(get_sync_ipts(ost, ist->pts) * enc->sample_rate) -
1757                                 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1758
1759     if (ost->audio_resample || ost->audio_channels_mapped) {
1760         buftmp = audio_buf;
1761         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp},
1762                                       allocated_audio_buf_size / (enc->channels * osize),
1763                                       (const uint8_t **)buf,
1764                                       size / (dec->channels * isize));
1765         if (size_out < 0) {
1766             av_log(NULL, AV_LOG_FATAL, "swr_convert failed\n");
1767             exit_program(1);
1768         }
1769         size_out = size_out * enc->channels * osize;
1770     } else {
1771         buftmp = buf[0];
1772         size_out = size;
1773     }
1774
1775     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1776
1777     /* now encode as many frames as possible */
1778     if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1779         /* output resampled raw samples */
1780         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1781             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1782             exit_program(1);
1783         }
1784         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1785
1786         frame_bytes = enc->frame_size * osize * enc->channels;
1787
1788         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1789             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1790             encode_audio_frame(s, ost, audio_buf, frame_bytes);
1791         }
1792     } else {
1793         encode_audio_frame(s, ost, buftmp, size_out);
1794     }
1795 }
1796
1797 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1798 {
1799     AVCodecContext *dec;
1800     AVPicture *picture2;
1801     AVPicture picture_tmp;
1802     uint8_t *buf = 0;
1803
1804     dec = ist->st->codec;
1805
1806     /* deinterlace : must be done before any resize */
1807     if (do_deinterlace) {
1808         int size;
1809
1810         /* create temporary picture */
1811         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1812         buf  = av_malloc(size);
1813         if (!buf)
1814             return;
1815
1816         picture2 = &picture_tmp;
1817         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1818
1819         if (avpicture_deinterlace(picture2, picture,
1820                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1821             /* if error, do not deinterlace */
1822             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1823             av_free(buf);
1824             buf = NULL;
1825             picture2 = picture;
1826         }
1827     } else {
1828         picture2 = picture;
1829     }
1830
1831     if (picture != picture2)
1832         *picture = *picture2;
1833     *bufp = buf;
1834 }
1835
1836 static void do_subtitle_out(AVFormatContext *s,
1837                             OutputStream *ost,
1838                             InputStream *ist,
1839                             AVSubtitle *sub,
1840                             int64_t pts)
1841 {
1842     static uint8_t *subtitle_out = NULL;
1843     int subtitle_out_max_size = 1024 * 1024;
1844     int subtitle_out_size, nb, i;
1845     AVCodecContext *enc;
1846     AVPacket pkt;
1847
1848     if (pts == AV_NOPTS_VALUE) {
1849         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1850         if (exit_on_error)
1851             exit_program(1);
1852         return;
1853     }
1854
1855     enc = ost->st->codec;
1856
1857     if (!subtitle_out) {
1858         subtitle_out = av_malloc(subtitle_out_max_size);
1859     }
1860
1861     /* Note: DVB subtitle need one packet to draw them and one other
1862        packet to clear them */
1863     /* XXX: signal it in the codec context ? */
1864     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1865         nb = 2;
1866     else
1867         nb = 1;
1868
1869     for (i = 0; i < nb; i++) {
1870         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1871
1872         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1873         // start_display_time is required to be 0
1874         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1875         sub->end_display_time  -= sub->start_display_time;
1876         sub->start_display_time = 0;
1877         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1878                                                     subtitle_out_max_size, sub);
1879         if (subtitle_out_size < 0) {
1880             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1881             exit_program(1);
1882         }
1883
1884         av_init_packet(&pkt);
1885         pkt.data = subtitle_out;
1886         pkt.size = subtitle_out_size;
1887         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1888         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1889             /* XXX: the pts correction is handled here. Maybe handling
1890                it in the codec would be better */
1891             if (i == 0)
1892                 pkt.pts += 90 * sub->start_display_time;
1893             else
1894                 pkt.pts += 90 * sub->end_display_time;
1895         }
1896         write_frame(s, &pkt, ost);
1897     }
1898 }
1899
1900 static double psnr(double d)
1901 {
1902     return -10.0 * log(d) / log(10.0);
1903 }
1904
1905 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1906                            int frame_size)
1907 {
1908     AVCodecContext *enc;
1909     int frame_number;
1910     double ti1, bitrate, avg_bitrate;
1911
1912     /* this is executed just the first time do_video_stats is called */
1913     if (!vstats_file) {
1914         vstats_file = fopen(vstats_filename, "w");
1915         if (!vstats_file) {
1916             perror("fopen");
1917             exit_program(1);
1918         }
1919     }
1920
1921     enc = ost->st->codec;
1922     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1923         frame_number = ost->frame_number;
1924         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1925         if (enc->flags&CODEC_FLAG_PSNR)
1926             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1927
1928         fprintf(vstats_file,"f_size= %6d ", frame_size);
1929         /* compute pts value */
1930         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1931         if (ti1 < 0.01)
1932             ti1 = 0.01;
1933
1934         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1935         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1936         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1937                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1938         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1939     }
1940 }
1941
1942
1943 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1944                          AVFrame *in_picture, float quality)
1945 {
1946     int nb_frames, i, ret, format_video_sync;
1947     AVCodecContext *enc;
1948     double sync_ipts, delta;
1949     double duration = 0;
1950     int frame_size = 0;
1951     InputStream *ist = NULL;
1952
1953     if (ost->source_index >= 0)
1954         ist = input_streams[ost->source_index];
1955
1956     enc = ost->st->codec;
1957
1958     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1959         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1960
1961     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1962     delta = sync_ipts - ost->sync_opts + duration;
1963
1964     /* by default, we output a single frame */
1965     nb_frames = 1;
1966
1967     format_video_sync = video_sync_method;
1968     if (format_video_sync == VSYNC_AUTO)
1969         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1970
1971     switch (format_video_sync) {
1972     case VSYNC_CFR:
1973         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1974         if (delta < -1.1)
1975             nb_frames = 0;
1976         else if (delta > 1.1)
1977             nb_frames = lrintf(delta);
1978         break;
1979     case VSYNC_VFR:
1980         if (delta <= -0.6)
1981             nb_frames = 0;
1982         else if (delta > 0.6)
1983             ost->sync_opts = lrint(sync_ipts);
1984         break;
1985     case VSYNC_DROP:
1986     case VSYNC_PASSTHROUGH:
1987         ost->sync_opts = lrint(sync_ipts);
1988         break;
1989     default:
1990         av_assert0(0);
1991     }
1992
1993     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1994     if (nb_frames == 0) {
1995         nb_frames_drop++;
1996         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1997         return;
1998     } else if (nb_frames > 1) {
1999         nb_frames_dup += nb_frames - 1;
2000         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
2001     }
2002
2003     /* duplicates frame if needed */
2004     for (i = 0; i < nb_frames; i++) {
2005         AVPacket pkt;
2006         av_init_packet(&pkt);
2007         pkt.data = NULL;
2008         pkt.size = 0;
2009
2010         if (s->oformat->flags & AVFMT_RAWPICTURE &&
2011             enc->codec->id == CODEC_ID_RAWVIDEO) {
2012             /* raw pictures are written as AVPicture structure to
2013                avoid any copies. We support temporarily the older
2014                method. */
2015             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
2016             enc->coded_frame->top_field_first  = in_picture->top_field_first;
2017             pkt.data   = (uint8_t *)in_picture;
2018             pkt.size   =  sizeof(AVPicture);
2019             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
2020             pkt.flags |= AV_PKT_FLAG_KEY;
2021
2022             write_frame(s, &pkt, ost);
2023         } else {
2024             int got_packet;
2025             AVFrame big_picture;
2026
2027             big_picture = *in_picture;
2028             /* better than nothing: use input picture interlaced
2029                settings */
2030             big_picture.interlaced_frame = in_picture->interlaced_frame;
2031             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
2032                 if (ost->top_field_first == -1)
2033                     big_picture.top_field_first = in_picture->top_field_first;
2034                 else
2035                     big_picture.top_field_first = !!ost->top_field_first;
2036             }
2037
2038             /* handles same_quant here. This is not correct because it may
2039                not be a global option */
2040             big_picture.quality = quality;
2041             if (!enc->me_threshold)
2042                 big_picture.pict_type = 0;
2043             big_picture.pts = ost->sync_opts;
2044             if (ost->forced_kf_index < ost->forced_kf_count &&
2045                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
2046                 big_picture.pict_type = AV_PICTURE_TYPE_I;
2047                 ost->forced_kf_index++;
2048             }
2049             update_benchmark(NULL);
2050             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
2051             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
2052             if (ret < 0) {
2053                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
2054                 exit_program(1);
2055             }
2056
2057             if (got_packet) {
2058                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
2059                     pkt.pts = ost->sync_opts;
2060
2061                 if (pkt.pts != AV_NOPTS_VALUE)
2062                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2063                 if (pkt.dts != AV_NOPTS_VALUE)
2064                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2065
2066                 if (debug_ts) {
2067                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
2068                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
2069                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
2070                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
2071                 }
2072
2073                 write_frame(s, &pkt, ost);
2074                 frame_size = pkt.size;
2075                 video_size += pkt.size;
2076                 av_free_packet(&pkt);
2077
2078                 /* if two pass, output log */
2079                 if (ost->logfile && enc->stats_out) {
2080                     fprintf(ost->logfile, "%s", enc->stats_out);
2081                 }
2082             }
2083         }
2084         ost->sync_opts++;
2085         /*
2086          * For video, number of frames in == number of packets out.
2087          * But there may be reordering, so we can't throw away frames on encoder
2088          * flush, we need to limit them here, before they go into encoder.
2089          */
2090         ost->frame_number++;
2091     }
2092     if (vstats_filename && frame_size)
2093         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
2094 }
2095
2096 /* check for new output on any of the filtergraphs */
2097 static int poll_filters(void)
2098 {
2099     AVFilterBufferRef *picref;
2100     AVFrame *filtered_frame = NULL;
2101     int i, ret, ret_all;
2102     unsigned nb_success, nb_eof;
2103
2104     while (1) {
2105         /* Reap all buffers present in the buffer sinks */
2106         for (i = 0; i < nb_output_streams; i++) {
2107             OutputStream *ost = output_streams[i];
2108             OutputFile    *of = output_files[ost->file_index];
2109
2110             if (!ost->filter || ost->is_past_recording_time)
2111                 continue;
2112
2113             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2114                 return AVERROR(ENOMEM);
2115             } else
2116                 avcodec_get_frame_defaults(ost->filtered_frame);
2117             filtered_frame = ost->filtered_frame;
2118
2119             while (1) {
2120                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
2121                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
2122                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
2123                 if (ret < 0) {
2124                     if (ret != AVERROR(EAGAIN)) {
2125                         char buf[256];
2126                         av_strerror(ret, buf, sizeof(buf));
2127                         av_log(NULL, AV_LOG_WARNING,
2128                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
2129                     }
2130                     break;
2131                 }
2132                 filtered_frame->pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2133                 //if (ost->source_index >= 0)
2134                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2135
2136                 if (of->start_time && filtered_frame->pts < of->start_time)
2137                     return 0;
2138
2139                 switch (ost->filter->filter->inputs[0]->type) {
2140                 case AVMEDIA_TYPE_VIDEO:
2141                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2142                     if (!ost->frame_aspect_ratio)
2143                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2144
2145                     do_video_out(of->ctx, ost, filtered_frame,
2146                                  same_quant ? ost->last_quality :
2147                                               ost->st->codec->global_quality);
2148                     break;
2149                 default:
2150                     // TODO support audio/subtitle filters
2151                     av_assert0(0);
2152                 }
2153
2154                 avfilter_unref_buffer(picref);
2155             }
2156         }
2157         /* Request frames through all the graphs */
2158         ret_all = nb_success = nb_eof = 0;
2159         for (i = 0; i < nb_filtergraphs; i++) {
2160             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2161             if (!ret) {
2162                 nb_success++;
2163             } else if (ret == AVERROR_EOF) {
2164                 nb_eof++;
2165             } else if (ret != AVERROR(EAGAIN)) {
2166                 char buf[256];
2167                 av_strerror(ret, buf, sizeof(buf));
2168                 av_log(NULL, AV_LOG_WARNING,
2169                        "Error in request_frame(): %s\n", buf);
2170                 ret_all = ret;
2171             }
2172         }
2173         if (!nb_success)
2174             break;
2175         /* Try again if anything succeeded */
2176     }
2177     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2178 }
2179
2180 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2181 {
2182     char buf[1024];
2183     OutputStream *ost;
2184     AVFormatContext *oc;
2185     int64_t total_size;
2186     AVCodecContext *enc;
2187     int frame_number, vid, i;
2188     double bitrate;
2189     int64_t pts = INT64_MAX;
2190     static int64_t last_time = -1;
2191     static int qp_histogram[52];
2192     int hours, mins, secs, us;
2193
2194     if (!print_stats && !is_last_report)
2195         return;
2196
2197     if (!is_last_report) {
2198         if (last_time == -1) {
2199             last_time = cur_time;
2200             return;
2201         }
2202         if ((cur_time - last_time) < 500000)
2203             return;
2204         last_time = cur_time;
2205     }
2206
2207
2208     oc = output_files[0]->ctx;
2209
2210     total_size = avio_size(oc->pb);
2211     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2212         total_size = avio_tell(oc->pb);
2213         if (total_size < 0)
2214             total_size = 0;
2215     }
2216
2217     buf[0] = '\0';
2218     vid = 0;
2219     for (i = 0; i < nb_output_streams; i++) {
2220         float q = -1;
2221         ost = output_streams[i];
2222         enc = ost->st->codec;
2223         if (!ost->stream_copy && enc->coded_frame)
2224             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2225         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2226             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2227         }
2228         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2229             float fps, t = (cur_time-timer_start) / 1000000.0;
2230
2231             frame_number = ost->frame_number;
2232             fps = t > 1 ? frame_number / t : 0;
2233             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2234                      frame_number, fps < 9.95, fps, q);
2235             if (is_last_report)
2236                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2237             if (qp_hist) {
2238                 int j;
2239                 int qp = lrintf(q);
2240                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2241                     qp_histogram[qp]++;
2242                 for (j = 0; j < 32; j++)
2243                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2244             }
2245             if (enc->flags&CODEC_FLAG_PSNR) {
2246                 int j;
2247                 double error, error_sum = 0;
2248                 double scale, scale_sum = 0;
2249                 char type[3] = { 'Y','U','V' };
2250                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2251                 for (j = 0; j < 3; j++) {
2252                     if (is_last_report) {
2253                         error = enc->error[j];
2254                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2255                     } else {
2256                         error = enc->coded_frame->error[j];
2257                         scale = enc->width * enc->height * 255.0 * 255.0;
2258                     }
2259                     if (j)
2260                         scale /= 4;
2261                     error_sum += error;
2262                     scale_sum += scale;
2263                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2264                 }
2265                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2266             }
2267             vid = 1;
2268         }
2269         /* compute min output value */
2270         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2271                                       ost->st->time_base, AV_TIME_BASE_Q));
2272     }
2273
2274     secs = pts / AV_TIME_BASE;
2275     us = pts % AV_TIME_BASE;
2276     mins = secs / 60;
2277     secs %= 60;
2278     hours = mins / 60;
2279     mins %= 60;
2280
2281     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2282
2283     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2284              "size=%8.0fkB time=", total_size / 1024.0);
2285     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2286              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2287              (100 * us) / AV_TIME_BASE);
2288     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2289              "bitrate=%6.1fkbits/s", bitrate);
2290
2291     if (nb_frames_dup || nb_frames_drop)
2292         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2293                 nb_frames_dup, nb_frames_drop);
2294
2295     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2296
2297     fflush(stderr);
2298
2299     if (is_last_report) {
2300         int64_t raw= audio_size + video_size + extra_size;
2301         av_log(NULL, AV_LOG_INFO, "\n");
2302         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2303                video_size / 1024.0,
2304                audio_size / 1024.0,
2305                extra_size / 1024.0,
2306                100.0 * (total_size - raw) / raw
2307         );
2308         if(video_size + audio_size + extra_size == 0){
2309             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2310         }
2311     }
2312 }
2313
2314 static void flush_encoders(void)
2315 {
2316     int i, ret;
2317
2318     for (i = 0; i < nb_output_streams; i++) {
2319         OutputStream   *ost = output_streams[i];
2320         AVCodecContext *enc = ost->st->codec;
2321         AVFormatContext *os = output_files[ost->file_index]->ctx;
2322         int stop_encoding = 0;
2323
2324         if (!ost->encoding_needed)
2325             continue;
2326
2327         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2328             continue;
2329         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2330             continue;
2331
2332         for (;;) {
2333             AVPacket pkt;
2334             int fifo_bytes, got_packet;
2335             av_init_packet(&pkt);
2336             pkt.data = NULL;
2337             pkt.size = 0;
2338
2339             switch (ost->st->codec->codec_type) {
2340             case AVMEDIA_TYPE_AUDIO:
2341                 fifo_bytes = av_fifo_size(ost->fifo);
2342                 if (fifo_bytes > 0) {
2343                     /* encode any samples remaining in fifo */
2344                     int frame_bytes = fifo_bytes;
2345
2346                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
2347
2348                     encode_audio_frame(os, ost, audio_buf, frame_bytes);
2349                 } else {
2350                     /* flush encoder with NULL frames until it is done
2351                        returning packets */
2352                     if (encode_audio_frame(os, ost, NULL, 0) == 0) {
2353                         stop_encoding = 1;
2354                         break;
2355                     }
2356                 }
2357                 break;
2358             case AVMEDIA_TYPE_VIDEO:
2359                 update_benchmark(NULL);
2360                 ret = avcodec_encode_video2(enc, &pkt, NULL, &got_packet);
2361                 update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
2362                 if (ret < 0) {
2363                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
2364                     exit_program(1);
2365                 }
2366                 video_size += pkt.size;
2367                 if (ost->logfile && enc->stats_out) {
2368                     fprintf(ost->logfile, "%s", enc->stats_out);
2369                 }
2370                 if (!got_packet) {
2371                     stop_encoding = 1;
2372                     break;
2373                 }
2374                 if (pkt.pts != AV_NOPTS_VALUE)
2375                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2376                 if (pkt.dts != AV_NOPTS_VALUE)
2377                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2378                 write_frame(os, &pkt, ost);
2379                 break;
2380             default:
2381                 stop_encoding = 1;
2382             }
2383             if (stop_encoding)
2384                 break;
2385         }
2386     }
2387 }
2388
2389 /*
2390  * Check whether a packet from ist should be written into ost at this time
2391  */
2392 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2393 {
2394     OutputFile *of = output_files[ost->file_index];
2395     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2396
2397     if (ost->source_index != ist_index)
2398         return 0;
2399
2400     if (of->start_time && ist->pts < of->start_time)
2401         return 0;
2402
2403     if (of->recording_time != INT64_MAX &&
2404         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2405                       (AVRational){ 1, 1000000 }) >= 0) {
2406         ost->is_past_recording_time = 1;
2407         return 0;
2408     }
2409
2410     return 1;
2411 }
2412
2413 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2414 {
2415     OutputFile *of = output_files[ost->file_index];
2416     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2417     AVPicture pict;
2418     AVPacket opkt;
2419
2420     av_init_packet(&opkt);
2421
2422     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2423         !ost->copy_initial_nonkeyframes)
2424         return;
2425
2426     /* force the input stream PTS */
2427     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2428         audio_size += pkt->size;
2429     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2430         video_size += pkt->size;
2431         ost->sync_opts++;
2432     }
2433
2434     if (pkt->pts != AV_NOPTS_VALUE)
2435         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2436     else
2437         opkt.pts = AV_NOPTS_VALUE;
2438
2439     if (pkt->dts == AV_NOPTS_VALUE)
2440         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2441     else
2442         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2443     opkt.dts -= ost_tb_start_time;
2444
2445     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2446     opkt.flags    = pkt->flags;
2447
2448     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2449     if (  ost->st->codec->codec_id != CODEC_ID_H264
2450        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2451        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2452        && ost->st->codec->codec_id != CODEC_ID_VC1
2453        ) {
2454         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2455             opkt.destruct = av_destruct_packet;
2456     } else {
2457         opkt.data = pkt->data;
2458         opkt.size = pkt->size;
2459     }
2460     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2461         /* store AVPicture in AVPacket, as expected by the output format */
2462         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2463         opkt.data = (uint8_t *)&pict;
2464         opkt.size = sizeof(AVPicture);
2465         opkt.flags |= AV_PKT_FLAG_KEY;
2466     }
2467
2468     write_frame(of->ctx, &opkt, ost);
2469     ost->st->codec->frame_number++;
2470     av_free_packet(&opkt);
2471 }
2472
2473 static void rate_emu_sleep(InputStream *ist)
2474 {
2475     if (input_files[ist->file_index]->rate_emu) {
2476         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2477         int64_t now = av_gettime() - ist->start;
2478         if (pts > now)
2479             usleep(pts - now);
2480     }
2481 }
2482
2483 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2484 {
2485     AVFrame *decoded_frame;
2486     AVCodecContext *avctx = ist->st->codec;
2487     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
2488     int i, ret;
2489
2490     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2491         return AVERROR(ENOMEM);
2492     else
2493         avcodec_get_frame_defaults(ist->decoded_frame);
2494     decoded_frame = ist->decoded_frame;
2495
2496     update_benchmark(NULL);
2497     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2498     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2499     if (ret < 0) {
2500         return ret;
2501     }
2502     if (avctx->sample_rate <= 0) {
2503         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2504         return AVERROR_INVALIDDATA;
2505     }
2506
2507     if (!*got_output) {
2508         /* no audio frame */
2509         return ret;
2510     }
2511
2512     /* if the decoder provides a pts, use it instead of the last packet pts.
2513        the decoder could be delaying output by a packet or more. */
2514     if (decoded_frame->pts != AV_NOPTS_VALUE)
2515         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2516
2517     /* increment next_dts to use for the case where the input stream does not
2518        have timestamps or there are multiple frames in the packet */
2519     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2520                      avctx->sample_rate;
2521     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2522                      avctx->sample_rate;
2523
2524
2525     // preprocess audio (volume)
2526     if (audio_volume != 256) {
2527         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
2528         void *samples = decoded_frame->data[0];
2529         switch (avctx->sample_fmt) {
2530         case AV_SAMPLE_FMT_U8:
2531         {
2532             uint8_t *volp = samples;
2533             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2534                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
2535                 *volp++ = av_clip_uint8(v);
2536             }
2537             break;
2538         }
2539         case AV_SAMPLE_FMT_S16:
2540         {
2541             int16_t *volp = samples;
2542             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2543                 int v = ((*volp) * audio_volume + 128) >> 8;
2544                 *volp++ = av_clip_int16(v);
2545             }
2546             break;
2547         }
2548         case AV_SAMPLE_FMT_S32:
2549         {
2550             int32_t *volp = samples;
2551             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2552                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2553                 *volp++ = av_clipl_int32(v);
2554             }
2555             break;
2556         }
2557         case AV_SAMPLE_FMT_FLT:
2558         {
2559             float *volp = samples;
2560             float scale = audio_volume / 256.f;
2561             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2562                 *volp++ *= scale;
2563             }
2564             break;
2565         }
2566         case AV_SAMPLE_FMT_DBL:
2567         {
2568             double *volp = samples;
2569             double scale = audio_volume / 256.;
2570             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2571                 *volp++ *= scale;
2572             }
2573             break;
2574         }
2575         default:
2576             av_log(NULL, AV_LOG_FATAL,
2577                    "Audio volume adjustment on sample format %s is not supported.\n",
2578                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2579             exit_program(1);
2580         }
2581     }
2582
2583     rate_emu_sleep(ist);
2584
2585     for (i = 0; i < nb_output_streams; i++) {
2586         OutputStream *ost = output_streams[i];
2587
2588         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2589             continue;
2590         do_audio_out(output_files[ost->file_index]->ctx, ost, ist, decoded_frame);
2591     }
2592
2593     return ret;
2594 }
2595
2596 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2597 {
2598     AVFrame *decoded_frame;
2599     void *buffer_to_free = NULL;
2600     int i, ret = 0, resample_changed;
2601     int64_t best_effort_timestamp;
2602     AVRational *frame_sample_aspect;
2603     float quality;
2604
2605     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2606         return AVERROR(ENOMEM);
2607     else
2608         avcodec_get_frame_defaults(ist->decoded_frame);
2609     decoded_frame = ist->decoded_frame;
2610     pkt->pts  = *pkt_pts;
2611     pkt->dts  = ist->dts;
2612     *pkt_pts  = AV_NOPTS_VALUE;
2613
2614     update_benchmark(NULL);
2615     ret = avcodec_decode_video2(ist->st->codec,
2616                                 decoded_frame, got_output, pkt);
2617     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2618     if (ret < 0)
2619         return ret;
2620
2621     quality = same_quant ? decoded_frame->quality : 0;
2622     if (!*got_output) {
2623         /* no picture yet */
2624         if (!pkt->size)
2625             for (i = 0; i < ist->nb_filters; i++)
2626                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2627         return ret;
2628     }
2629
2630     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2631     if(best_effort_timestamp != AV_NOPTS_VALUE)
2632         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2633
2634     pkt->size = 0;
2635
2636     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2637
2638     rate_emu_sleep(ist);
2639
2640     if (ist->st->sample_aspect_ratio.num)
2641         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2642
2643     resample_changed = ist->resample_width   != decoded_frame->width  ||
2644                        ist->resample_height  != decoded_frame->height ||
2645                        ist->resample_pix_fmt != decoded_frame->format;
2646     if (resample_changed) {
2647         av_log(NULL, AV_LOG_INFO,
2648                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2649                ist->file_index, ist->st->index,
2650                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2651                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2652
2653         ist->resample_width   = decoded_frame->width;
2654         ist->resample_height  = decoded_frame->height;
2655         ist->resample_pix_fmt = decoded_frame->format;
2656
2657         for (i = 0; i < nb_filtergraphs; i++)
2658             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2659                 configure_filtergraph(filtergraphs[i]) < 0) {
2660                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2661                 exit_program(1);
2662             }
2663     }
2664
2665     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2666     for (i = 0; i < ist->nb_filters; i++) {
2667         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2668                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2669                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2670         // XXX what an ugly hack
2671         if (ist->filters[i]->graph->nb_outputs == 1)
2672             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2673
2674         if (!frame_sample_aspect->num)
2675             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2676         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2677             FrameBuffer      *buf = decoded_frame->opaque;
2678             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2679                                         decoded_frame->data, decoded_frame->linesize,
2680                                         AV_PERM_READ | AV_PERM_PRESERVE,
2681                                         ist->st->codec->width, ist->st->codec->height,
2682                                         ist->st->codec->pix_fmt);
2683
2684             avfilter_copy_frame_props(fb, decoded_frame);
2685             fb->buf->priv           = buf;
2686             fb->buf->free           = filter_release_buffer;
2687
2688             av_assert0(buf->refcount>0);
2689             buf->refcount++;
2690             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2691                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2692                                  AV_BUFFERSRC_FLAG_NO_COPY);
2693         } else
2694         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2695             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2696             exit_program(1);
2697         }
2698
2699     }
2700
2701     av_free(buffer_to_free);
2702     return ret;
2703 }
2704
2705 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2706 {
2707     AVSubtitle subtitle;
2708     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2709                                           &subtitle, got_output, pkt);
2710     if (ret < 0)
2711         return ret;
2712     if (!*got_output)
2713         return ret;
2714
2715     rate_emu_sleep(ist);
2716
2717     for (i = 0; i < nb_output_streams; i++) {
2718         OutputStream *ost = output_streams[i];
2719
2720         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2721             continue;
2722
2723         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2724     }
2725
2726     avsubtitle_free(&subtitle);
2727     return ret;
2728 }
2729
2730 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2731 static int output_packet(InputStream *ist, const AVPacket *pkt)
2732 {
2733     int ret = 0, i;
2734     int got_output;
2735     int64_t pkt_pts = AV_NOPTS_VALUE;
2736
2737     AVPacket avpkt;
2738     if (!ist->saw_first_ts) {
2739         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;
2740         ist->pts = 0;
2741         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2742             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2743             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2744         }
2745         ist->saw_first_ts = 1;
2746     }
2747
2748     if (ist->next_dts == AV_NOPTS_VALUE)
2749         ist->next_dts = ist->dts;
2750     if (ist->next_pts == AV_NOPTS_VALUE)
2751         ist->next_pts = ist->pts;
2752
2753     if (pkt == NULL) {
2754         /* EOF handling */
2755         av_init_packet(&avpkt);
2756         avpkt.data = NULL;
2757         avpkt.size = 0;
2758         goto handle_eof;
2759     } else {
2760         avpkt = *pkt;
2761     }
2762
2763     if (pkt->dts != AV_NOPTS_VALUE) {
2764         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2765         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2766             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2767     }
2768     if(pkt->pts != AV_NOPTS_VALUE)
2769         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2770
2771     // while we have more to decode or while the decoder did output something on EOF
2772     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2773         int duration;
2774     handle_eof:
2775
2776         ist->pts = ist->next_pts;
2777         ist->dts = ist->next_dts;
2778
2779         if (avpkt.size && avpkt.size != pkt->size) {
2780             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2781                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2782             ist->showed_multi_packet_warning = 1;
2783         }
2784
2785         switch (ist->st->codec->codec_type) {
2786         case AVMEDIA_TYPE_AUDIO:
2787             ret = transcode_audio    (ist, &avpkt, &got_output);
2788             break;
2789         case AVMEDIA_TYPE_VIDEO:
2790             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2791             if (avpkt.duration) {
2792                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2793             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2794                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2795                 duration = ((int64_t)AV_TIME_BASE *
2796                                 ist->st->codec->time_base.num * ticks) /
2797                                 ist->st->codec->time_base.den;
2798             } else
2799                 duration = 0;
2800
2801             if(ist->dts != AV_NOPTS_VALUE && duration) {
2802                 ist->next_dts += duration;
2803             }else
2804                 ist->next_dts = AV_NOPTS_VALUE;
2805
2806             if (got_output)
2807                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2808             break;
2809         case AVMEDIA_TYPE_SUBTITLE:
2810             ret = transcode_subtitles(ist, &avpkt, &got_output);
2811             break;
2812         default:
2813             return -1;
2814         }
2815
2816         if (ret < 0)
2817             return ret;
2818
2819         avpkt.dts=
2820         avpkt.pts= AV_NOPTS_VALUE;
2821
2822         // touch data and size only if not EOF
2823         if (pkt) {
2824             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2825                 ret = avpkt.size;
2826             avpkt.data += ret;
2827             avpkt.size -= ret;
2828         }
2829         if (!got_output) {
2830             continue;
2831         }
2832     }
2833
2834     /* handle stream copy */
2835     if (!ist->decoding_needed) {
2836         rate_emu_sleep(ist);
2837         ist->dts = ist->next_dts;
2838         switch (ist->st->codec->codec_type) {
2839         case AVMEDIA_TYPE_AUDIO:
2840             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2841                              ist->st->codec->sample_rate;
2842             break;
2843         case AVMEDIA_TYPE_VIDEO:
2844             if (pkt->duration) {
2845                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2846             } else if(ist->st->codec->time_base.num != 0) {
2847                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2848                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2849                                   ist->st->codec->time_base.num * ticks) /
2850                                   ist->st->codec->time_base.den;
2851             }
2852             break;
2853         }
2854         ist->pts = ist->dts;
2855         ist->next_pts = ist->next_dts;
2856     }
2857     for (i = 0; pkt && i < nb_output_streams; i++) {
2858         OutputStream *ost = output_streams[i];
2859
2860         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2861             continue;
2862
2863         do_streamcopy(ist, ost, pkt);
2864     }
2865
2866     return 0;
2867 }
2868
2869 static void print_sdp(void)
2870 {
2871     char sdp[2048];
2872     int i;
2873     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2874
2875     if (!avc)
2876         exit_program(1);
2877     for (i = 0; i < nb_output_files; i++)
2878         avc[i] = output_files[i]->ctx;
2879
2880     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2881     printf("SDP:\n%s\n", sdp);
2882     fflush(stdout);
2883     av_freep(&avc);
2884 }
2885
2886 static int init_input_stream(int ist_index, char *error, int error_len)
2887 {
2888     int i;
2889     InputStream *ist = input_streams[ist_index];
2890
2891     if (ist->decoding_needed) {
2892         AVCodec *codec = ist->dec;
2893         if (!codec) {
2894             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2895                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2896             return AVERROR(EINVAL);
2897         }
2898
2899         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2900         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2901             ist->st->codec->get_buffer     = codec_get_buffer;
2902             ist->st->codec->release_buffer = codec_release_buffer;
2903             ist->st->codec->opaque         = ist;
2904         }
2905
2906         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2907             av_dict_set(&ist->opts, "threads", "auto", 0);
2908         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2909             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2910                     ist->file_index, ist->st->index);
2911             return AVERROR(EINVAL);
2912         }
2913         assert_codec_experimental(ist->st->codec, 0);
2914         assert_avoptions(ist->opts);
2915
2916         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2917             for (i = 0; i < nb_output_streams; i++) {
2918                 OutputStream *ost = output_streams[i];
2919                 if (ost->source_index == ist_index) {
2920                     if (!ist->st->codec->channel_layout || !ost->st->codec->channel_layout)
2921                         get_default_channel_layouts(ost, ist);
2922                     break;
2923                 }
2924             }
2925         }
2926     }
2927
2928     ist->next_pts = AV_NOPTS_VALUE;
2929     ist->next_dts = AV_NOPTS_VALUE;
2930     ist->is_start = 1;
2931
2932     return 0;
2933 }
2934
2935 static InputStream *get_input_stream(OutputStream *ost)
2936 {
2937     if (ost->source_index >= 0)
2938         return input_streams[ost->source_index];
2939
2940     if (ost->filter) {
2941         FilterGraph *fg = ost->filter->graph;
2942         int i;
2943
2944         for (i = 0; i < fg->nb_inputs; i++)
2945             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2946                 return fg->inputs[i]->ist;
2947     }
2948
2949     return NULL;
2950 }
2951
2952 static int transcode_init(void)
2953 {
2954     int ret = 0, i, j, k;
2955     AVFormatContext *oc;
2956     AVCodecContext *codec, *icodec;
2957     OutputStream *ost;
2958     InputStream *ist;
2959     char error[1024];
2960     int want_sdp = 1;
2961
2962     /* init framerate emulation */
2963     for (i = 0; i < nb_input_files; i++) {
2964         InputFile *ifile = input_files[i];
2965         if (ifile->rate_emu)
2966             for (j = 0; j < ifile->nb_streams; j++)
2967                 input_streams[j + ifile->ist_index]->start = av_gettime();
2968     }
2969
2970     /* output stream init */
2971     for (i = 0; i < nb_output_files; i++) {
2972         oc = output_files[i]->ctx;
2973         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2974             av_dump_format(oc, i, oc->filename, 1);
2975             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2976             return AVERROR(EINVAL);
2977         }
2978     }
2979
2980     /* init complex filtergraphs */
2981     for (i = 0; i < nb_filtergraphs; i++)
2982         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2983             return ret;
2984
2985     /* for each output stream, we compute the right encoding parameters */
2986     for (i = 0; i < nb_output_streams; i++) {
2987         ost = output_streams[i];
2988         oc  = output_files[ost->file_index]->ctx;
2989         ist = get_input_stream(ost);
2990
2991         if (ost->attachment_filename)
2992             continue;
2993
2994         codec  = ost->st->codec;
2995
2996         if (ist) {
2997             icodec = ist->st->codec;
2998
2999             ost->st->disposition          = ist->st->disposition;
3000             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
3001             codec->chroma_sample_location = icodec->chroma_sample_location;
3002         }
3003
3004         if (ost->stream_copy) {
3005             uint64_t extra_size;
3006
3007             av_assert0(ist && !ost->filter);
3008
3009             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
3010
3011             if (extra_size > INT_MAX) {
3012                 return AVERROR(EINVAL);
3013             }
3014
3015             /* if stream_copy is selected, no need to decode or encode */
3016             codec->codec_id   = icodec->codec_id;
3017             codec->codec_type = icodec->codec_type;
3018
3019             if (!codec->codec_tag) {
3020                 if (!oc->oformat->codec_tag ||
3021                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
3022                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
3023                     codec->codec_tag = icodec->codec_tag;
3024             }
3025
3026             codec->bit_rate       = icodec->bit_rate;
3027             codec->rc_max_rate    = icodec->rc_max_rate;
3028             codec->rc_buffer_size = icodec->rc_buffer_size;
3029             codec->field_order    = icodec->field_order;
3030             codec->extradata      = av_mallocz(extra_size);
3031             if (!codec->extradata) {
3032                 return AVERROR(ENOMEM);
3033             }
3034             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
3035             codec->extradata_size= icodec->extradata_size;
3036
3037             codec->time_base = ist->st->time_base;
3038             /*
3039              * Avi is a special case here because it supports variable fps but
3040              * having the fps and timebase differe significantly adds quite some
3041              * overhead
3042              */
3043             if(!strcmp(oc->oformat->name, "avi")) {
3044                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
3045                                  && av_q2d(ist->st->time_base) < 1.0/500
3046                     || copy_tb==0){
3047                     codec->time_base = icodec->time_base;
3048                     codec->time_base.num *= icodec->ticks_per_frame;
3049                     codec->time_base.den *= 2;
3050                     codec->ticks_per_frame = 2;
3051                 }
3052             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
3053                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
3054                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
3055             ) {
3056                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
3057                                 && av_q2d(ist->st->time_base) < 1.0/500
3058                    || copy_tb==0){
3059                     codec->time_base = icodec->time_base;
3060                     codec->time_base.num *= icodec->ticks_per_frame;
3061                 }
3062             }
3063             av_reduce(&codec->time_base.num, &codec->time_base.den,
3064                         codec->time_base.num, codec->time_base.den, INT_MAX);
3065
3066             switch (codec->codec_type) {
3067             case AVMEDIA_TYPE_AUDIO:
3068                 if (audio_volume != 256) {
3069                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
3070                     exit_program(1);
3071                 }
3072                 codec->channel_layout     = icodec->channel_layout;
3073                 codec->sample_rate        = icodec->sample_rate;
3074                 codec->channels           = icodec->channels;
3075                 codec->frame_size         = icodec->frame_size;
3076                 codec->audio_service_type = icodec->audio_service_type;
3077                 codec->block_align        = icodec->block_align;
3078                 break;
3079             case AVMEDIA_TYPE_VIDEO:
3080                 codec->pix_fmt            = icodec->pix_fmt;
3081                 codec->width              = icodec->width;
3082                 codec->height             = icodec->height;
3083                 codec->has_b_frames       = icodec->has_b_frames;
3084                 if (!codec->sample_aspect_ratio.num) {
3085                     codec->sample_aspect_ratio   =
3086                     ost->st->sample_aspect_ratio =
3087                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3088                         ist->st->codec->sample_aspect_ratio.num ?
3089                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3090                 }
3091                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3092                 break;
3093             case AVMEDIA_TYPE_SUBTITLE:
3094                 codec->width  = icodec->width;
3095                 codec->height = icodec->height;
3096                 break;
3097             case AVMEDIA_TYPE_DATA:
3098             case AVMEDIA_TYPE_ATTACHMENT:
3099                 break;
3100             default:
3101                 abort();
3102             }
3103         } else {
3104             if (!ost->enc)
3105                 ost->enc = avcodec_find_encoder(codec->codec_id);
3106             if (!ost->enc) {
3107                 /* should only happen when a default codec is not present. */
3108                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3109                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3110                 ret = AVERROR(EINVAL);
3111                 goto dump_format;
3112             }
3113
3114             if (ist)
3115                 ist->decoding_needed = 1;
3116             ost->encoding_needed = 1;
3117
3118             switch (codec->codec_type) {
3119             case AVMEDIA_TYPE_AUDIO:
3120                 ost->fifo = av_fifo_alloc(1024);
3121                 if (!ost->fifo) {
3122                     return AVERROR(ENOMEM);
3123                 }
3124
3125                 if (!codec->sample_rate)
3126                     codec->sample_rate = icodec->sample_rate;
3127                 choose_sample_rate(ost->st, ost->enc);
3128                 codec->time_base = (AVRational){ 1, codec->sample_rate };
3129
3130                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
3131                     codec->sample_fmt = icodec->sample_fmt;
3132                 choose_sample_fmt(ost->st, ost->enc);
3133
3134                 if (ost->audio_channels_mapped) {
3135                     /* the requested output channel is set to the number of
3136                      * -map_channel only if no -ac are specified */
3137                     if (!codec->channels) {
3138                         codec->channels       = ost->audio_channels_mapped;
3139                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
3140                         if (!codec->channel_layout) {
3141                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
3142                             exit_program(1);
3143                         }
3144                     }
3145                     /* fill unused channel mapping with -1 (which means a muted
3146                      * channel in case the number of output channels is bigger
3147                      * than the number of mapped channel) */
3148                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
3149                         ost->audio_channels_map[j] = -1;
3150                 } else if (!codec->channels) {
3151                     codec->channels = icodec->channels;
3152                     codec->channel_layout = icodec->channel_layout;
3153                 }
3154                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
3155                     codec->channel_layout = 0;
3156
3157
3158 //                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
3159 //                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
3160 //                                             || codec->channel_layout != icodec->channel_layout;
3161                 icodec->request_channels  = codec-> channels;
3162                 ost->resample_sample_fmt  = icodec->sample_fmt;
3163                 ost->resample_sample_rate = icodec->sample_rate;
3164                 ost->resample_channels    = icodec->channels;
3165                 ost->resample_channel_layout = icodec->channel_layout;
3166                 break;
3167             case AVMEDIA_TYPE_VIDEO:
3168                 if (!ost->filter) {
3169                     FilterGraph *fg;
3170                     fg = init_simple_filtergraph(ist, ost);
3171                     if (configure_video_filters(fg)) {
3172                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3173                         exit(1);
3174                     }
3175                 }
3176
3177                 if (ist && !ost->frame_rate.num)
3178                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
3179                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3180                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3181                     ost->frame_rate = ost->enc->supported_framerates[idx];
3182                 }
3183                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3184                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3185                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3186                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3187                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3188                 }
3189                 for (j = 0; j < ost->forced_kf_count; j++)
3190                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3191                                                          AV_TIME_BASE_Q,
3192                                                          codec->time_base);
3193
3194                 codec->width  = ost->filter->filter->inputs[0]->w;
3195                 codec->height = ost->filter->filter->inputs[0]->h;
3196                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3197                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3198                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3199                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3200                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3201
3202                 if (codec->width   != icodec->width  ||
3203                     codec->height  != icodec->height ||
3204                     codec->pix_fmt != icodec->pix_fmt) {
3205                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3206                 }
3207
3208                 break;
3209             case AVMEDIA_TYPE_SUBTITLE:
3210                 codec->time_base = (AVRational){1, 1000};
3211                 break;
3212             default:
3213                 abort();
3214                 break;
3215             }
3216             /* two pass mode */
3217             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3218                 char logfilename[1024];
3219                 FILE *f;
3220
3221                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3222                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3223                          i);
3224                 if (!strcmp(ost->enc->name, "libx264")) {
3225                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3226                 } else {
3227                     if (codec->flags & CODEC_FLAG_PASS2) {
3228                         char  *logbuffer;
3229                         size_t logbuffer_size;
3230                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3231                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3232                                 logfilename);
3233                             exit_program(1);
3234                         }
3235                         codec->stats_in = logbuffer;
3236                     }
3237                     if (codec->flags & CODEC_FLAG_PASS1) {
3238                         f = fopen(logfilename, "wb");
3239                         if (!f) {
3240                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3241                                 logfilename, strerror(errno));
3242                             exit_program(1);
3243                         }
3244                         ost->logfile = f;
3245                     }
3246                 }
3247             }
3248         }
3249     }
3250
3251     /* open each encoder */
3252     for (i = 0; i < nb_output_streams; i++) {
3253         ost = output_streams[i];
3254         if (ost->encoding_needed) {
3255             AVCodec      *codec = ost->enc;
3256             AVCodecContext *dec = NULL;
3257
3258             if ((ist = get_input_stream(ost)))
3259                 dec = ist->st->codec;
3260             if (dec && dec->subtitle_header) {
3261                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3262                 if (!ost->st->codec->subtitle_header) {
3263                     ret = AVERROR(ENOMEM);
3264                     goto dump_format;
3265                 }
3266                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3267                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3268             }
3269             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3270                 av_dict_set(&ost->opts, "threads", "auto", 0);
3271             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3272                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3273                         ost->file_index, ost->index);
3274                 ret = AVERROR(EINVAL);
3275                 goto dump_format;
3276             }
3277             assert_codec_experimental(ost->st->codec, 1);
3278             assert_avoptions(ost->opts);
3279             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3280                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3281                                              " It takes bits/s as argument, not kbits/s\n");
3282             extra_size += ost->st->codec->extradata_size;
3283
3284             if (ost->st->codec->me_threshold)
3285                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3286         }
3287     }
3288
3289     /* init input streams */
3290     for (i = 0; i < nb_input_streams; i++)
3291         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3292             goto dump_format;
3293
3294     /* discard unused programs */
3295     for (i = 0; i < nb_input_files; i++) {
3296         InputFile *ifile = input_files[i];
3297         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3298             AVProgram *p = ifile->ctx->programs[j];
3299             int discard  = AVDISCARD_ALL;
3300
3301             for (k = 0; k < p->nb_stream_indexes; k++)
3302                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3303                     discard = AVDISCARD_DEFAULT;
3304                     break;
3305                 }
3306             p->discard = discard;
3307         }
3308     }
3309
3310     /* open files and write file headers */
3311     for (i = 0; i < nb_output_files; i++) {
3312         oc = output_files[i]->ctx;
3313         oc->interrupt_callback = int_cb;
3314         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3315             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3316             ret = AVERROR(EINVAL);
3317             goto dump_format;
3318         }
3319 //         assert_avoptions(output_files[i]->opts);
3320         if (strcmp(oc->oformat->name, "rtp")) {
3321             want_sdp = 0;
3322         }
3323     }
3324
3325  dump_format:
3326     /* dump the file output parameters - cannot be done before in case
3327        of stream copy */
3328     for (i = 0; i < nb_output_files; i++) {
3329         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3330     }
3331
3332     /* dump the stream mapping */
3333     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3334     for (i = 0; i < nb_input_streams; i++) {
3335         ist = input_streams[i];
3336
3337         for (j = 0; j < ist->nb_filters; j++) {
3338             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3339             if (ist->filters[j]->graph->graph_desc) {
3340                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3341                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3342                        link->dst->filter->name);
3343                 if (link->dst->input_count > 1)
3344                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3345                 if (nb_filtergraphs > 1)
3346                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3347                 av_log(NULL, AV_LOG_INFO, "\n");
3348             }
3349         }
3350     }
3351
3352     for (i = 0; i < nb_output_streams; i++) {
3353         ost = output_streams[i];
3354
3355         if (ost->attachment_filename) {
3356             /* an attached file */
3357             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3358                    ost->attachment_filename, ost->file_index, ost->index);
3359             continue;
3360         }
3361
3362         if (ost->filter && ost->filter->graph->graph_desc) {
3363             /* output from a complex graph */
3364             AVFilterLink *link = ost->filter->filter->inputs[0];
3365             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3366             if (link->src->output_count > 1)
3367                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3368             if (nb_filtergraphs > 1)
3369                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3370
3371             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3372                    ost->index, ost->enc ? ost->enc->name : "?");
3373             continue;
3374         }
3375
3376         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3377                input_streams[ost->source_index]->file_index,
3378                input_streams[ost->source_index]->st->index,
3379                ost->file_index,
3380                ost->index);
3381         if (ost->audio_channels_mapped) {
3382             av_log(NULL, AV_LOG_INFO, " [ch:");
3383             for (j = 0; j < ost->audio_channels_mapped; j++)
3384                 if (ost->audio_channels_map[j] == -1)
3385                     av_log(NULL, AV_LOG_INFO, " M");
3386                 else
3387                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
3388             av_log(NULL, AV_LOG_INFO, "]");
3389         }
3390         if (ost->sync_ist != input_streams[ost->source_index])
3391             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3392                    ost->sync_ist->file_index,
3393                    ost->sync_ist->st->index);
3394         if (ost->stream_copy)
3395             av_log(NULL, AV_LOG_INFO, " (copy)");
3396         else
3397             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3398                    input_streams[ost->source_index]->dec->name : "?",
3399                    ost->enc ? ost->enc->name : "?");
3400         av_log(NULL, AV_LOG_INFO, "\n");
3401     }
3402
3403     if (ret) {
3404         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3405         return ret;
3406     }
3407
3408     if (want_sdp) {
3409         print_sdp();
3410     }
3411
3412     return 0;
3413 }
3414
3415 /*
3416  * The following code is the main loop of the file converter
3417  */
3418 static int transcode(void)
3419 {
3420     int ret, i;
3421     AVFormatContext *is, *os;
3422     OutputStream *ost;
3423     InputStream *ist;
3424     uint8_t *no_packet;
3425     int no_packet_count = 0;
3426     int64_t timer_start;
3427     int key;
3428
3429     if (!(no_packet = av_mallocz(nb_input_files)))
3430         exit_program(1);
3431
3432     ret = transcode_init();
3433     if (ret < 0)
3434         goto fail;
3435
3436     if (!using_stdin) {
3437         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3438     }
3439
3440     timer_start = av_gettime();
3441
3442     for (; received_sigterm == 0;) {
3443         int file_index, ist_index, past_recording_time = 1;
3444         AVPacket pkt;
3445         int64_t ipts_min;
3446         int64_t cur_time= av_gettime();
3447
3448         ipts_min = INT64_MAX;
3449         /* if 'q' pressed, exits */
3450         if (!using_stdin) {
3451             static int64_t last_time;
3452             if (received_nb_signals)
3453                 break;
3454             /* read_key() returns 0 on EOF */
3455             if(cur_time - last_time >= 100000 && !run_as_daemon){
3456                 key =  read_key();
3457                 last_time = cur_time;
3458             }else
3459                 key = -1;
3460             if (key == 'q')
3461                 break;
3462             if (key == '+') av_log_set_level(av_log_get_level()+10);
3463             if (key == '-') av_log_set_level(av_log_get_level()-10);
3464             if (key == 's') qp_hist     ^= 1;
3465             if (key == 'h'){
3466                 if (do_hex_dump){
3467                     do_hex_dump = do_pkt_dump = 0;
3468                 } else if(do_pkt_dump){
3469                     do_hex_dump = 1;
3470                 } else
3471                     do_pkt_dump = 1;
3472                 av_log_set_level(AV_LOG_DEBUG);
3473             }
3474             if (key == 'c' || key == 'C'){
3475                 char buf[4096], target[64], command[256], arg[256] = {0};
3476                 double time;
3477                 int k, n = 0;
3478                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3479                 i = 0;
3480                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3481                     if (k > 0)
3482                         buf[i++] = k;
3483                 buf[i] = 0;
3484                 if (k > 0 &&
3485                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3486                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3487                            target, time, command, arg);
3488                     for (i = 0; i < nb_filtergraphs; i++) {
3489                         FilterGraph *fg = filtergraphs[i];
3490                         if (fg->graph) {
3491                             if (time < 0) {
3492                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3493                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3494                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3495                             } else {
3496                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3497                             }
3498                         }
3499                     }
3500                 } else {
3501                     av_log(NULL, AV_LOG_ERROR,
3502                            "Parse error, at least 3 arguments were expected, "
3503                            "only %d given in string '%s'\n", n, buf);
3504                 }
3505             }
3506             if (key == 'd' || key == 'D'){
3507                 int debug=0;
3508                 if(key == 'D') {
3509                     debug = input_streams[0]->st->codec->debug<<1;
3510                     if(!debug) debug = 1;
3511                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3512                         debug += debug;
3513                 }else
3514                     if(scanf("%d", &debug)!=1)
3515                         fprintf(stderr,"error parsing debug value\n");
3516                 for(i=0;i<nb_input_streams;i++) {
3517                     input_streams[i]->st->codec->debug = debug;
3518                 }
3519                 for(i=0;i<nb_output_streams;i++) {
3520                     ost = output_streams[i];
3521                     ost->st->codec->debug = debug;
3522                 }
3523                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3524                 fprintf(stderr,"debug=%d\n", debug);
3525             }
3526             if (key == '?'){
3527                 fprintf(stderr, "key    function\n"
3528                                 "?      show this help\n"
3529                                 "+      increase verbosity\n"
3530                                 "-      decrease verbosity\n"
3531                                 "c      Send command to filtergraph\n"
3532                                 "D      cycle through available debug modes\n"
3533                                 "h      dump packets/hex press to cycle through the 3 states\n"
3534                                 "q      quit\n"
3535                                 "s      Show QP histogram\n"
3536                 );
3537             }
3538         }
3539
3540         /* check if there's any stream where output is still needed */
3541         for (i = 0; i < nb_output_streams; i++) {
3542             OutputFile *of;
3543             ost = output_streams[i];
3544             of  = output_files[ost->file_index];
3545             os  = output_files[ost->file_index]->ctx;
3546             if (ost->is_past_recording_time ||
3547                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3548                 continue;
3549             if (ost->frame_number >= ost->max_frames) {
3550                 int j;
3551                 for (j = 0; j < of->ctx->nb_streams; j++)
3552                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3553                 continue;
3554             }
3555             past_recording_time = 0;
3556         }
3557         if (past_recording_time)
3558             break;
3559
3560         /* select the stream that we must read now by looking at the
3561            smallest output pts */
3562         file_index = -1;
3563         for (i = 0; i < nb_input_streams; i++) {
3564             int64_t ipts;
3565             ist = input_streams[i];
3566             ipts = ist->pts;
3567             if (ist->discard || no_packet[ist->file_index])
3568                 continue;
3569             if (!input_files[ist->file_index]->eof_reached) {
3570                 if (ipts < ipts_min) {
3571                     ipts_min = ipts;
3572                     file_index = ist->file_index;
3573                 }
3574             }
3575         }
3576         /* if none, if is finished */
3577         if (file_index < 0) {
3578             if (no_packet_count) {
3579                 no_packet_count = 0;
3580                 memset(no_packet, 0, nb_input_files);
3581                 usleep(10000);
3582                 continue;
3583             }
3584             break;
3585         }
3586
3587         /* read a frame from it and output it in the fifo */
3588         is  = input_files[file_index]->ctx;
3589         ret = av_read_frame(is, &pkt);
3590         if (ret == AVERROR(EAGAIN)) {
3591             no_packet[file_index] = 1;
3592             no_packet_count++;
3593             continue;
3594         }
3595         if (ret < 0) {
3596             input_files[file_index]->eof_reached = 1;
3597
3598             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3599                 ist = input_streams[input_files[file_index]->ist_index + i];
3600                 if (ist->decoding_needed)
3601                     output_packet(ist, NULL);
3602             }
3603
3604             if (opt_shortest)
3605                 break;
3606             else
3607                 continue;
3608         }
3609
3610         no_packet_count = 0;
3611         memset(no_packet, 0, nb_input_files);
3612
3613         if (do_pkt_dump) {
3614             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3615                              is->streams[pkt.stream_index]);
3616         }
3617         /* the following test is needed in case new streams appear
3618            dynamically in stream : we ignore them */
3619         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3620             goto discard_packet;
3621         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3622         ist = input_streams[ist_index];
3623         if (ist->discard)
3624             goto discard_packet;
3625
3626         if (pkt.dts != AV_NOPTS_VALUE)
3627             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3628         if (pkt.pts != AV_NOPTS_VALUE)
3629             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3630
3631         if (pkt.pts != AV_NOPTS_VALUE)
3632             pkt.pts *= ist->ts_scale;
3633         if (pkt.dts != AV_NOPTS_VALUE)
3634             pkt.dts *= ist->ts_scale;
3635
3636         if (debug_ts) {
3637             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3638                     "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",
3639                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3640                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3641                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3642                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3643                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3644                     input_files[ist->file_index]->ts_offset);
3645         }
3646
3647         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3648             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3649             int64_t delta   = pkt_dts - ist->next_dts;
3650             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3651             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3652                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3653                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3654                 pkt_dts+1<ist->pts){
3655                 input_files[ist->file_index]->ts_offset -= delta;
3656                 av_log(NULL, AV_LOG_DEBUG,
3657                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3658                        delta, input_files[ist->file_index]->ts_offset);
3659                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3660                 if (pkt.pts != AV_NOPTS_VALUE)
3661                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3662             }
3663             } else {
3664                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3665                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3666                      pkt_dts+1<ist->pts){
3667                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3668                     pkt.dts = AV_NOPTS_VALUE;
3669                 }
3670                 if (pkt.pts != AV_NOPTS_VALUE){
3671                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3672                     delta   = pkt_pts - ist->next_dts;
3673                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3674                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3675                         pkt_pts+1<ist->pts) {
3676                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3677                         pkt.pts = AV_NOPTS_VALUE;
3678                     }
3679                 }
3680             }
3681         }
3682
3683         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3684         if (output_packet(ist, &pkt) < 0 ||
3685             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3686             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3687                    ist->file_index, ist->st->index);
3688             if (exit_on_error)
3689                 exit_program(1);
3690             av_free_packet(&pkt);
3691             continue;
3692         }
3693
3694     discard_packet:
3695         av_free_packet(&pkt);
3696
3697         /* dump report by using the output first video and audio streams */
3698         print_report(0, timer_start, cur_time);
3699     }
3700
3701     /* at the end of stream, we must flush the decoder buffers */
3702     for (i = 0; i < nb_input_streams; i++) {
3703         ist = input_streams[i];
3704         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3705             output_packet(ist, NULL);
3706         }
3707     }
3708     poll_filters();
3709     flush_encoders();
3710
3711     term_exit();
3712
3713     /* write the trailer if needed and close file */
3714     for (i = 0; i < nb_output_files; i++) {
3715         os = output_files[i]->ctx;
3716         av_write_trailer(os);
3717     }
3718
3719     /* dump report by using the first video and audio streams */
3720     print_report(1, timer_start, av_gettime());
3721
3722     /* close each encoder */
3723     for (i = 0; i < nb_output_streams; i++) {
3724         ost = output_streams[i];
3725         if (ost->encoding_needed) {
3726             av_freep(&ost->st->codec->stats_in);
3727             avcodec_close(ost->st->codec);
3728         }
3729     }
3730
3731     /* close each decoder */
3732     for (i = 0; i < nb_input_streams; i++) {
3733         ist = input_streams[i];
3734         if (ist->decoding_needed) {
3735             avcodec_close(ist->st->codec);
3736         }
3737     }
3738
3739     /* finished ! */
3740     ret = 0;
3741
3742  fail:
3743     av_freep(&no_packet);
3744
3745     if (output_streams) {
3746         for (i = 0; i < nb_output_streams; i++) {
3747             ost = output_streams[i];
3748             if (ost) {
3749                 if (ost->stream_copy)
3750                     av_freep(&ost->st->codec->extradata);
3751                 if (ost->logfile) {
3752                     fclose(ost->logfile);
3753                     ost->logfile = NULL;
3754                 }
3755                 av_fifo_free(ost->fifo); /* works even if fifo is not
3756                                              initialized but set to zero */
3757                 av_freep(&ost->st->codec->subtitle_header);
3758                 av_free(ost->forced_kf_pts);
3759                 swr_free(&ost->swr);
3760                 av_dict_free(&ost->opts);
3761             }
3762         }
3763     }
3764     return ret;
3765 }
3766
3767 static int opt_frame_crop(const char *opt, const char *arg)
3768 {
3769     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3770     return AVERROR(EINVAL);
3771 }
3772
3773 static int opt_pad(const char *opt, const char *arg)
3774 {
3775     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3776     return -1;
3777 }
3778
3779 static int opt_video_channel(const char *opt, const char *arg)
3780 {
3781     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3782     return opt_default("channel", arg);
3783 }
3784
3785 static int opt_video_standard(const char *opt, const char *arg)
3786 {
3787     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3788     return opt_default("standard", arg);
3789 }
3790
3791 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3792 {
3793     audio_codec_name = arg;
3794     return parse_option(o, "codec:a", arg, options);
3795 }
3796
3797 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3798 {
3799     video_codec_name = arg;
3800     return parse_option(o, "codec:v", arg, options);
3801 }
3802
3803 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3804 {
3805     subtitle_codec_name = arg;
3806     return parse_option(o, "codec:s", arg, options);
3807 }
3808
3809 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3810 {
3811     return parse_option(o, "codec:d", arg, options);
3812 }
3813
3814 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3815 {
3816     StreamMap *m = NULL;
3817     int i, negative = 0, file_idx;
3818     int sync_file_idx = -1, sync_stream_idx = 0;
3819     char *p, *sync;
3820     char *map;
3821
3822     if (*arg == '-') {
3823         negative = 1;
3824         arg++;
3825     }
3826     map = av_strdup(arg);
3827
3828     /* parse sync stream first, just pick first matching stream */
3829     if (sync = strchr(map, ',')) {
3830         *sync = 0;
3831         sync_file_idx = strtol(sync + 1, &sync, 0);
3832         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3833             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3834             exit_program(1);
3835         }
3836         if (*sync)
3837             sync++;
3838         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3839             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3840                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3841                 sync_stream_idx = i;
3842                 break;
3843             }
3844         if (i == input_files[sync_file_idx]->nb_streams) {
3845             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3846                                        "match any streams.\n", arg);
3847             exit_program(1);
3848         }
3849     }
3850
3851
3852     if (map[0] == '[') {
3853         /* this mapping refers to lavfi output */
3854         const char *c = map + 1;
3855         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3856                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3857         m = &o->stream_maps[o->nb_stream_maps - 1];
3858         m->linklabel = av_get_token(&c, "]");
3859         if (!m->linklabel) {
3860             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3861             exit_program(1);
3862         }
3863     } else {
3864         file_idx = strtol(map, &p, 0);
3865         if (file_idx >= nb_input_files || file_idx < 0) {
3866             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3867             exit_program(1);
3868         }
3869         if (negative)
3870             /* disable some already defined maps */
3871             for (i = 0; i < o->nb_stream_maps; i++) {
3872                 m = &o->stream_maps[i];
3873                 if (file_idx == m->file_index &&
3874                     check_stream_specifier(input_files[m->file_index]->ctx,
3875                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3876                                            *p == ':' ? p + 1 : p) > 0)
3877                     m->disabled = 1;
3878             }
3879         else
3880             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3881                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3882                             *p == ':' ? p + 1 : p) <= 0)
3883                     continue;
3884                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3885                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3886                 m = &o->stream_maps[o->nb_stream_maps - 1];
3887
3888                 m->file_index   = file_idx;
3889                 m->stream_index = i;
3890
3891                 if (sync_file_idx >= 0) {
3892                     m->sync_file_index   = sync_file_idx;
3893                     m->sync_stream_index = sync_stream_idx;
3894                 } else {
3895                     m->sync_file_index   = file_idx;
3896                     m->sync_stream_index = i;
3897                 }
3898             }
3899     }
3900
3901     if (!m) {
3902         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3903         exit_program(1);
3904     }
3905
3906     av_freep(&map);
3907     return 0;
3908 }
3909
3910 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3911 {
3912     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3913                                 &o->nb_attachments, o->nb_attachments + 1);
3914     o->attachments[o->nb_attachments - 1] = arg;
3915     return 0;
3916 }
3917
3918 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3919 {
3920     int n;
3921     AVStream *st;
3922     AudioChannelMap *m;
3923
3924     o->audio_channel_maps =
3925         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3926                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3927     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3928
3929     /* muted channel syntax */
3930     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3931     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3932         m->file_idx = m->stream_idx = -1;
3933         if (n == 1)
3934             m->ofile_idx = m->ostream_idx = -1;
3935         return 0;
3936     }
3937
3938     /* normal syntax */
3939     n = sscanf(arg, "%d.%d.%d:%d.%d",
3940                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3941                &m->ofile_idx, &m->ostream_idx);
3942
3943     if (n != 3 && n != 5) {
3944         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3945                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3946         exit_program(1);
3947     }
3948
3949     if (n != 5) // only file.stream.channel specified
3950         m->ofile_idx = m->ostream_idx = -1;
3951
3952     /* check input */
3953     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3954         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3955                m->file_idx);
3956         exit_program(1);
3957     }
3958     if (m->stream_idx < 0 ||
3959         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3960         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3961                m->file_idx, m->stream_idx);
3962         exit_program(1);
3963     }
3964     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3965     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3966         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3967                m->file_idx, m->stream_idx);
3968         exit_program(1);
3969     }
3970     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3971         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3972                m->file_idx, m->stream_idx, m->channel_idx);
3973         exit_program(1);
3974     }
3975     return 0;
3976 }
3977
3978 /**
3979  * Parse a metadata specifier in arg.
3980  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3981  * @param index for type c/p, chapter/program index is written here
3982  * @param stream_spec for type s, the stream specifier is written here
3983  */
3984 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3985 {
3986     if (*arg) {
3987         *type = *arg;
3988         switch (*arg) {
3989         case 'g':
3990             break;
3991         case 's':
3992             if (*(++arg) && *arg != ':') {
3993                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3994                 exit_program(1);
3995             }
3996             *stream_spec = *arg == ':' ? arg + 1 : "";
3997             break;
3998         case 'c':
3999         case 'p':
4000             if (*(++arg) == ':')
4001                 *index = strtol(++arg, NULL, 0);
4002             break;
4003         default:
4004             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
4005             exit_program(1);
4006         }
4007     } else
4008         *type = 'g';
4009 }
4010
4011 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
4012 {
4013     AVDictionary **meta_in = NULL;
4014     AVDictionary **meta_out = NULL;
4015     int i, ret = 0;
4016     char type_in, type_out;
4017     const char *istream_spec = NULL, *ostream_spec = NULL;
4018     int idx_in = 0, idx_out = 0;
4019
4020     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
4021     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
4022
4023     if (!ic) {
4024         if (type_out == 'g' || !*outspec)
4025             o->metadata_global_manual = 1;
4026         if (type_out == 's' || !*outspec)
4027             o->metadata_streams_manual = 1;
4028         if (type_out == 'c' || !*outspec)
4029             o->metadata_chapters_manual = 1;
4030         return 0;
4031     }
4032
4033     if (type_in == 'g' || type_out == 'g')
4034         o->metadata_global_manual = 1;
4035     if (type_in == 's' || type_out == 's')
4036         o->metadata_streams_manual = 1;
4037     if (type_in == 'c' || type_out == 'c')
4038         o->metadata_chapters_manual = 1;
4039
4040 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4041     if ((index) < 0 || (index) >= (nb_elems)) {\
4042         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
4043                 (desc), (index));\
4044         exit_program(1);\
4045     }
4046
4047 #define SET_DICT(type, meta, context, index)\
4048         switch (type) {\
4049         case 'g':\
4050             meta = &context->metadata;\
4051             break;\
4052         case 'c':\
4053             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
4054             meta = &context->chapters[index]->metadata;\
4055             break;\
4056         case 'p':\
4057             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
4058             meta = &context->programs[index]->metadata;\
4059             break;\
4060         }\
4061
4062     SET_DICT(type_in, meta_in, ic, idx_in);
4063     SET_DICT(type_out, meta_out, oc, idx_out);
4064
4065     /* for input streams choose first matching stream */
4066     if (type_in == 's') {
4067         for (i = 0; i < ic->nb_streams; i++) {
4068             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
4069                 meta_in = &ic->streams[i]->metadata;
4070                 break;
4071             } else if (ret < 0)
4072                 exit_program(1);
4073         }
4074         if (!meta_in) {
4075             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
4076             exit_program(1);
4077         }
4078     }
4079
4080     if (type_out == 's') {
4081         for (i = 0; i < oc->nb_streams; i++) {
4082             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
4083                 meta_out = &oc->streams[i]->metadata;
4084                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4085             } else if (ret < 0)
4086                 exit_program(1);
4087         }
4088     } else
4089         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
4090
4091     return 0;
4092 }
4093
4094 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
4095 {
4096     char buf[128];
4097     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
4098     struct tm time = *gmtime((time_t*)&recording_timestamp);
4099     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
4100     parse_option(o, "metadata", buf, options);
4101
4102     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
4103                                  "tag instead.\n", opt);
4104     return 0;
4105 }
4106
4107 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4108 {
4109     const char *codec_string = encoder ? "encoder" : "decoder";
4110     AVCodec *codec;
4111
4112     codec = encoder ?
4113         avcodec_find_encoder_by_name(name) :
4114         avcodec_find_decoder_by_name(name);
4115     if (!codec) {
4116         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4117         exit_program(1);
4118     }
4119     if (codec->type != type) {
4120         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4121         exit_program(1);
4122     }
4123     return codec;
4124 }
4125
4126 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4127 {
4128     char *codec_name = NULL;
4129
4130     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4131     if (codec_name) {
4132         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4133         st->codec->codec_id = codec->id;
4134         return codec;
4135     } else
4136         return avcodec_find_decoder(st->codec->codec_id);
4137 }
4138
4139 /**
4140  * Add all the streams from the given input file to the global
4141  * list of input streams.
4142  */
4143 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4144 {
4145     int i;
4146     char *next, *codec_tag = NULL;
4147
4148     for (i = 0; i < ic->nb_streams; i++) {
4149         AVStream *st = ic->streams[i];
4150         AVCodecContext *dec = st->codec;
4151         InputStream *ist = av_mallocz(sizeof(*ist));
4152
4153         if (!ist)
4154             exit_program(1);
4155
4156         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4157         input_streams[nb_input_streams - 1] = ist;
4158
4159         ist->st = st;
4160         ist->file_index = nb_input_files;
4161         ist->discard = 1;
4162         st->discard  = AVDISCARD_ALL;
4163         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4164
4165         ist->ts_scale = 1.0;
4166         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4167
4168         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4169         if (codec_tag) {
4170             uint32_t tag = strtol(codec_tag, &next, 0);
4171             if (*next)
4172                 tag = AV_RL32(codec_tag);
4173             st->codec->codec_tag = tag;
4174         }
4175
4176         ist->dec = choose_decoder(o, ic, st);
4177
4178         switch (dec->codec_type) {
4179         case AVMEDIA_TYPE_VIDEO:
4180             if(!ist->dec)
4181                 ist->dec = avcodec_find_decoder(dec->codec_id);
4182             if (dec->lowres) {
4183                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4184             }
4185
4186             ist->resample_height  = dec->height;
4187             ist->resample_width   = dec->width;
4188             ist->resample_pix_fmt = dec->pix_fmt;
4189
4190             break;
4191         case AVMEDIA_TYPE_AUDIO:
4192         case AVMEDIA_TYPE_DATA:
4193         case AVMEDIA_TYPE_SUBTITLE:
4194             if(!ist->dec)
4195                 ist->dec = avcodec_find_decoder(dec->codec_id);
4196             break;
4197         case AVMEDIA_TYPE_ATTACHMENT:
4198         case AVMEDIA_TYPE_UNKNOWN:
4199             break;
4200         default:
4201             abort();
4202         }
4203     }
4204 }
4205
4206 static void assert_file_overwrite(const char *filename)
4207 {
4208     if ((!file_overwrite || no_file_overwrite) &&
4209         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4210          av_strstart(filename, "file:", NULL))) {
4211         if (avio_check(filename, 0) == 0) {
4212             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4213                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4214                 fflush(stderr);
4215                 term_exit();
4216                 signal(SIGINT, SIG_DFL);
4217                 if (!read_yesno()) {
4218                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4219                     exit_program(1);
4220                 }
4221                 term_init();
4222             }
4223             else {
4224                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4225                 exit_program(1);
4226             }
4227         }
4228     }
4229 }
4230
4231 static void dump_attachment(AVStream *st, const char *filename)
4232 {
4233     int ret;
4234     AVIOContext *out = NULL;
4235     AVDictionaryEntry *e;
4236
4237     if (!st->codec->extradata_size) {
4238         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4239                nb_input_files - 1, st->index);
4240         return;
4241     }
4242     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4243         filename = e->value;
4244     if (!*filename) {
4245         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4246                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4247         exit_program(1);
4248     }
4249
4250     assert_file_overwrite(filename);
4251
4252     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4253         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4254                filename);
4255         exit_program(1);
4256     }
4257
4258     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4259     avio_flush(out);
4260     avio_close(out);
4261 }
4262
4263 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4264 {
4265     AVFormatContext *ic;
4266     AVInputFormat *file_iformat = NULL;
4267     int err, i, ret;
4268     int64_t timestamp;
4269     uint8_t buf[128];
4270     AVDictionary **opts;
4271     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4272
4273     if (o->format) {
4274         if (!(file_iformat = av_find_input_format(o->format))) {
4275             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4276             exit_program(1);
4277         }
4278     }
4279
4280     if (!strcmp(filename, "-"))
4281         filename = "pipe:";
4282