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