lavu: add public timecode API.
[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 "libavcodec/audioconvert.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 #if CONFIG_AVFILTER
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersink.h"
62 # include "libavfilter/buffersrc.h"
63 # include "libavfilter/vsrc_buffer.h"
64 #endif
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/time.h>
69 #include <sys/resource.h>
70 #elif HAVE_GETPROCESSTIMES
71 #include <windows.h>
72 #endif
73 #if HAVE_GETPROCESSMEMORYINFO
74 #include <windows.h>
75 #include <psapi.h>
76 #endif
77
78 #if HAVE_SYS_SELECT_H
79 #include <sys/select.h>
80 #endif
81
82 #if HAVE_TERMIOS_H
83 #include <fcntl.h>
84 #include <sys/ioctl.h>
85 #include <sys/time.h>
86 #include <termios.h>
87 #elif HAVE_KBHIT
88 #include <conio.h>
89 #endif
90 #include <time.h>
91
92 #include "cmdutils.h"
93
94 #include "libavutil/avassert.h"
95
96 #define VSYNC_AUTO       -1
97 #define VSYNC_PASSTHROUGH 0
98 #define VSYNC_CFR         1
99 #define VSYNC_VFR         2
100 #define VSYNC_DROP        0xff
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112 } StreamMap;
113
114 typedef struct {
115     int  file_idx,  stream_idx,  channel_idx; // input
116     int ofile_idx, ostream_idx;               // output
117 } AudioChannelMap;
118
119 /**
120  * select an input file for an output file
121  */
122 typedef struct MetadataMap {
123     int  file;      ///< file index
124     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
125     int  index;     ///< stream/chapter/program number
126 } MetadataMap;
127
128 static const OptionDef options[];
129
130 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
131
132 static int frame_bits_per_raw_sample = 0;
133 static int video_discard = 0;
134 static int same_quant = 0;
135 static int do_deinterlace = 0;
136 static int intra_dc_precision = 8;
137 static int qp_hist = 0;
138 static int intra_only = 0;
139 static const char *video_codec_name    = NULL;
140 static const char *audio_codec_name    = NULL;
141 static const char *subtitle_codec_name = NULL;
142
143 static int file_overwrite = 0;
144 static int no_file_overwrite = 0;
145 static int do_benchmark = 0;
146 static int do_hex_dump = 0;
147 static int do_pkt_dump = 0;
148 static int do_psnr = 0;
149 static int do_pass = 0;
150 static const char *pass_logfilename_prefix;
151 static int video_sync_method = VSYNC_AUTO;
152 static int audio_sync_method = 0;
153 static float audio_drift_threshold = 0.1;
154 static int copy_ts = 0;
155 static int copy_tb = -1;
156 static int opt_shortest = 0;
157 static char *vstats_filename;
158 static FILE *vstats_file;
159
160 static int audio_volume = 256;
161
162 static int exit_on_error = 0;
163 static int using_stdin = 0;
164 static int run_as_daemon  = 0;
165 static volatile int received_nb_signals = 0;
166 static int64_t video_size = 0;
167 static int64_t audio_size = 0;
168 static int64_t extra_size = 0;
169 static int nb_frames_dup = 0;
170 static int nb_frames_drop = 0;
171 static int input_sync;
172
173 static float dts_delta_threshold = 10;
174
175 static int print_stats = 1;
176
177 static uint8_t *audio_buf;
178 static unsigned int allocated_audio_buf_size;
179
180 static uint8_t *input_tmp= NULL;
181
182 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
183
184 typedef struct FrameBuffer {
185     uint8_t *base[4];
186     uint8_t *data[4];
187     int  linesize[4];
188
189     int h, w;
190     enum PixelFormat pix_fmt;
191
192     int refcount;
193     struct InputStream *ist;
194     struct FrameBuffer *next;
195 } FrameBuffer;
196
197 typedef struct InputStream {
198     int file_index;
199     AVStream *st;
200     int discard;             /* true if stream data should be discarded */
201     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
202     AVCodec *dec;
203     AVFrame *decoded_frame;
204     AVFrame *filtered_frame;
205
206     int64_t       start;     /* time when read started */
207     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
208                                 is not defined */
209     int64_t       pts;       /* current pts */
210     double ts_scale;
211     int is_start;            /* is 1 at the start and after a discontinuity */
212     int showed_multi_packet_warning;
213     AVDictionary *opts;
214
215     /* a pool of free buffers for decoded data */
216     FrameBuffer *buffer_pool;
217     int dr1;
218 } InputStream;
219
220 typedef struct InputFile {
221     AVFormatContext *ctx;
222     int eof_reached;      /* true if eof reached */
223     int ist_index;        /* index of first stream in input_streams */
224     int buffer_size;      /* current total buffer size */
225     int64_t ts_offset;
226     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
227                              from ctx.nb_streams if new streams appear during av_read_frame() */
228     int rate_emu;
229 } InputFile;
230
231 typedef struct OutputStream {
232     int file_index;          /* file index */
233     int index;               /* stream index in the output file */
234     int source_index;        /* InputStream index */
235     AVStream *st;            /* stream in the output file */
236     int encoding_needed;     /* true if encoding needed for this stream */
237     int frame_number;
238     /* input pts and corresponding output pts
239        for A/V sync */
240     struct InputStream *sync_ist; /* input stream to sync against */
241     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
242     AVBitStreamFilterContext *bitstream_filters;
243     AVCodec *enc;
244     int64_t max_frames;
245     AVFrame *output_frame;
246
247     /* video only */
248     int video_resample;
249     AVFrame resample_frame;              /* temporary frame for image resampling */
250     struct SwsContext *img_resample_ctx; /* for image resampling */
251     int resample_height;
252     int resample_width;
253     int resample_pix_fmt;
254     AVRational frame_rate;
255     int force_fps;
256     int top_field_first;
257
258     float frame_aspect_ratio;
259
260     /* forced key frames */
261     int64_t *forced_kf_pts;
262     int forced_kf_count;
263     int forced_kf_index;
264
265     /* audio only */
266     int audio_resample;
267     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
268     int audio_channels_mapped;           ///< number of channels in audio_channels_map
269     int resample_sample_fmt;
270     int resample_channels;
271     int resample_sample_rate;
272     float rematrix_volume;
273     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
274     FILE *logfile;
275
276     struct SwrContext *swr;
277
278 #if CONFIG_AVFILTER
279     AVFilterContext *output_video_filter;
280     AVFilterContext *input_video_filter;
281     AVFilterBufferRef *picref;
282     char *avfilter;
283     AVFilterGraph *graph;
284 #endif
285
286     int64_t sws_flags;
287     AVDictionary *opts;
288     int is_past_recording_time;
289     int stream_copy;
290     const char *attachment_filename;
291     int copy_initial_nonkeyframes;
292 } OutputStream;
293
294
295 #if HAVE_TERMIOS_H
296
297 /* init terminal so that we can grab keys */
298 static struct termios oldtty;
299 static int restore_tty;
300 #endif
301
302 typedef struct OutputFile {
303     AVFormatContext *ctx;
304     AVDictionary *opts;
305     int ost_index;       /* index of the first stream in output_streams */
306     int64_t recording_time; /* desired length of the resulting file in microseconds */
307     int64_t start_time;     /* start time in microseconds */
308     uint64_t limit_filesize;
309 } OutputFile;
310
311 static InputStream *input_streams   = NULL;
312 static int         nb_input_streams = 0;
313 static InputFile   *input_files     = NULL;
314 static int         nb_input_files   = 0;
315
316 static OutputStream *output_streams = NULL;
317 static int        nb_output_streams = 0;
318 static OutputFile   *output_files   = NULL;
319 static int        nb_output_files   = 0;
320
321 typedef struct OptionsContext {
322     /* input/output options */
323     int64_t start_time;
324     const char *format;
325
326     SpecifierOpt *codec_names;
327     int        nb_codec_names;
328     SpecifierOpt *audio_channels;
329     int        nb_audio_channels;
330     SpecifierOpt *audio_sample_rate;
331     int        nb_audio_sample_rate;
332     SpecifierOpt *rematrix_volume;
333     int        nb_rematrix_volume;
334     SpecifierOpt *frame_rates;
335     int        nb_frame_rates;
336     SpecifierOpt *frame_sizes;
337     int        nb_frame_sizes;
338     SpecifierOpt *frame_pix_fmts;
339     int        nb_frame_pix_fmts;
340
341     /* input options */
342     int64_t input_ts_offset;
343     int rate_emu;
344
345     SpecifierOpt *ts_scale;
346     int        nb_ts_scale;
347     SpecifierOpt *dump_attachment;
348     int        nb_dump_attachment;
349
350     /* output options */
351     StreamMap *stream_maps;
352     int     nb_stream_maps;
353     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
354     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
355     /* first item specifies output metadata, second is input */
356     MetadataMap (*meta_data_maps)[2];
357     int nb_meta_data_maps;
358     int metadata_global_manual;
359     int metadata_streams_manual;
360     int metadata_chapters_manual;
361     const char **attachments;
362     int       nb_attachments;
363
364     int chapters_input_file;
365
366     int64_t recording_time;
367     uint64_t limit_filesize;
368     float mux_preload;
369     float mux_max_delay;
370
371     int video_disable;
372     int audio_disable;
373     int subtitle_disable;
374     int data_disable;
375
376     /* indexed by output file stream index */
377     int   *streamid_map;
378     int nb_streamid_map;
379
380     SpecifierOpt *metadata;
381     int        nb_metadata;
382     SpecifierOpt *max_frames;
383     int        nb_max_frames;
384     SpecifierOpt *bitstream_filters;
385     int        nb_bitstream_filters;
386     SpecifierOpt *codec_tags;
387     int        nb_codec_tags;
388     SpecifierOpt *sample_fmts;
389     int        nb_sample_fmts;
390     SpecifierOpt *qscale;
391     int        nb_qscale;
392     SpecifierOpt *forced_key_frames;
393     int        nb_forced_key_frames;
394     SpecifierOpt *force_fps;
395     int        nb_force_fps;
396     SpecifierOpt *frame_aspect_ratios;
397     int        nb_frame_aspect_ratios;
398     SpecifierOpt *rc_overrides;
399     int        nb_rc_overrides;
400     SpecifierOpt *intra_matrices;
401     int        nb_intra_matrices;
402     SpecifierOpt *inter_matrices;
403     int        nb_inter_matrices;
404     SpecifierOpt *top_field_first;
405     int        nb_top_field_first;
406     SpecifierOpt *metadata_map;
407     int        nb_metadata_map;
408     SpecifierOpt *presets;
409     int        nb_presets;
410     SpecifierOpt *copy_initial_nonkeyframes;
411     int        nb_copy_initial_nonkeyframes;
412 #if CONFIG_AVFILTER
413     SpecifierOpt *filters;
414     int        nb_filters;
415 #endif
416 } OptionsContext;
417
418 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
419 {\
420     int i, ret;\
421     for (i = 0; i < o->nb_ ## name; i++) {\
422         char *spec = o->name[i].specifier;\
423         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
424             outvar = o->name[i].u.type;\
425         else if (ret < 0)\
426             exit_program(1);\
427     }\
428 }
429
430 static void reset_options(OptionsContext *o, int is_input)
431 {
432     const OptionDef *po = options;
433     OptionsContext bak= *o;
434
435     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
436     while (po->name) {
437         void *dst = (uint8_t*)o + po->u.off;
438
439         if (po->flags & OPT_SPEC) {
440             SpecifierOpt **so = dst;
441             int i, *count = (int*)(so + 1);
442             for (i = 0; i < *count; i++) {
443                 av_freep(&(*so)[i].specifier);
444                 if (po->flags & OPT_STRING)
445                     av_freep(&(*so)[i].u.str);
446             }
447             av_freep(so);
448             *count = 0;
449         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
450             av_freep(dst);
451         po++;
452     }
453
454     av_freep(&o->stream_maps);
455     av_freep(&o->audio_channel_maps);
456     av_freep(&o->meta_data_maps);
457     av_freep(&o->streamid_map);
458
459     memset(o, 0, sizeof(*o));
460
461     if(is_input) o->recording_time = bak.recording_time;
462     else         o->recording_time = INT64_MAX;
463     o->mux_max_delay  = 0.7;
464     o->limit_filesize = UINT64_MAX;
465     o->chapters_input_file = INT_MAX;
466
467     uninit_opts();
468     init_opts();
469 }
470
471 static int alloc_buffer(AVCodecContext *s, InputStream *ist, FrameBuffer **pbuf)
472 {
473     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
474     int i, ret;
475     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
476     int h_chroma_shift, v_chroma_shift;
477     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
478     int w = s->width, h = s->height;
479
480     if (!buf)
481         return AVERROR(ENOMEM);
482
483     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
484         w += 2*edge;
485         h += 2*edge;
486     }
487
488     avcodec_align_dimensions(s, &w, &h);
489     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
490                               s->pix_fmt, 32)) < 0) {
491         av_freep(&buf);
492         return ret;
493     }
494     /* XXX this shouldn't be needed, but some tests break without this line
495      * those decoders are buggy and need to be fixed.
496      * the following tests fail:
497      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
498      */
499     memset(buf->base[0], 128, ret);
500
501     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
502     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
503         const int h_shift = i==0 ? 0 : h_chroma_shift;
504         const int v_shift = i==0 ? 0 : v_chroma_shift;
505         if (s->flags & CODEC_FLAG_EMU_EDGE)
506             buf->data[i] = buf->base[i];
507         else
508             buf->data[i] = buf->base[i] +
509                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
510                                    (pixel_size*edge >> h_shift), 32);
511     }
512     buf->w       = s->width;
513     buf->h       = s->height;
514     buf->pix_fmt = s->pix_fmt;
515     buf->ist     = ist;
516
517     *pbuf = buf;
518     return 0;
519 }
520
521 static void free_buffer_pool(InputStream *ist)
522 {
523     FrameBuffer *buf = ist->buffer_pool;
524     while (buf) {
525         ist->buffer_pool = buf->next;
526         av_freep(&buf->base[0]);
527         av_free(buf);
528         buf = ist->buffer_pool;
529     }
530 }
531
532 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
533 {
534     av_assert0(buf->refcount);
535     buf->refcount--;
536     if (!buf->refcount) {
537         buf->next = ist->buffer_pool;
538         ist->buffer_pool = buf;
539     }
540 }
541
542 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
543 {
544     InputStream *ist = s->opaque;
545     FrameBuffer *buf;
546     int ret, i;
547
548     if(av_image_check_size(s->width, s->height, 0, s))
549         return -1;
550
551     if (!ist->buffer_pool && (ret = alloc_buffer(s, ist, &ist->buffer_pool)) < 0)
552         return ret;
553
554     buf              = ist->buffer_pool;
555     ist->buffer_pool = buf->next;
556     buf->next        = NULL;
557     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
558         av_freep(&buf->base[0]);
559         av_free(buf);
560         ist->dr1 = 0;
561         if ((ret = alloc_buffer(s, ist, &buf)) < 0)
562             return ret;
563     }
564     buf->refcount++;
565
566     frame->opaque        = buf;
567     frame->type          = FF_BUFFER_TYPE_USER;
568     frame->extended_data = frame->data;
569     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
570
571     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
572         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
573         frame->data[i]     = buf->data[i];
574         frame->linesize[i] = buf->linesize[i];
575     }
576
577     return 0;
578 }
579
580 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
581 {
582     InputStream *ist = s->opaque;
583     FrameBuffer *buf = frame->opaque;
584     int i;
585
586     if(frame->type!=FF_BUFFER_TYPE_USER)
587         return avcodec_default_release_buffer(s, frame);
588
589     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
590         frame->data[i] = NULL;
591
592     unref_buffer(ist, buf);
593 }
594
595 static void filter_release_buffer(AVFilterBuffer *fb)
596 {
597     FrameBuffer *buf = fb->priv;
598     av_free(fb);
599     unref_buffer(buf->ist, buf);
600 }
601
602 #if CONFIG_AVFILTER
603
604 static int configure_video_filters(InputStream *ist, OutputStream *ost)
605 {
606     AVFilterContext *last_filter, *filter;
607     /** filter graph containing all filters including input & output */
608     AVCodecContext *codec = ost->st->codec;
609     AVCodecContext *icodec = ist->st->codec;
610     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
611     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
612     AVRational sample_aspect_ratio;
613     char args[255];
614     int ret;
615
616     ost->graph = avfilter_graph_alloc();
617
618     if (ist->st->sample_aspect_ratio.num) {
619         sample_aspect_ratio = ist->st->sample_aspect_ratio;
620     } else
621         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
622
623     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
624              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
625              sample_aspect_ratio.num, sample_aspect_ratio.den);
626
627     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
628                                        "src", args, NULL, ost->graph);
629     if (ret < 0)
630         return ret;
631
632 #if FF_API_OLD_VSINK_API
633     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
634                                        "out", NULL, pix_fmts, ost->graph);
635 #else
636     buffersink_params->pixel_fmts = pix_fmts;
637     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
638                                        "out", NULL, buffersink_params, ost->graph);
639 #endif
640     av_freep(&buffersink_params);
641
642     if (ret < 0)
643         return ret;
644     last_filter = ost->input_video_filter;
645
646     if (codec->width != icodec->width || codec->height != icodec->height) {
647         snprintf(args, 255, "%d:%d:flags=0x%X",
648                  codec->width,
649                  codec->height,
650                  (unsigned)ost->sws_flags);
651         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
652                                                 NULL, args, NULL, ost->graph)) < 0)
653             return ret;
654         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
655             return ret;
656         last_filter = filter;
657     }
658
659     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
660     ost->graph->scale_sws_opts = av_strdup(args);
661
662     if (ost->avfilter) {
663         AVFilterInOut *outputs = avfilter_inout_alloc();
664         AVFilterInOut *inputs  = avfilter_inout_alloc();
665
666         outputs->name    = av_strdup("in");
667         outputs->filter_ctx = last_filter;
668         outputs->pad_idx = 0;
669         outputs->next    = NULL;
670
671         inputs->name    = av_strdup("out");
672         inputs->filter_ctx = ost->output_video_filter;
673         inputs->pad_idx = 0;
674         inputs->next    = NULL;
675
676         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
677             return ret;
678         av_freep(&ost->avfilter);
679     } else {
680         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
681             return ret;
682     }
683
684     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
685         return ret;
686
687     codec->width  = ost->output_video_filter->inputs[0]->w;
688     codec->height = ost->output_video_filter->inputs[0]->h;
689     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
690         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
691         av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
692         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
693
694     return 0;
695 }
696 #endif /* CONFIG_AVFILTER */
697
698 static void term_exit(void)
699 {
700     av_log(NULL, AV_LOG_QUIET, "%s", "");
701 #if HAVE_TERMIOS_H
702     if(restore_tty)
703         tcsetattr (0, TCSANOW, &oldtty);
704 #endif
705 }
706
707 static volatile int received_sigterm = 0;
708
709 static void sigterm_handler(int sig)
710 {
711     received_sigterm = sig;
712     received_nb_signals++;
713     term_exit();
714     if(received_nb_signals > 3)
715         exit(123);
716 }
717
718 static void term_init(void)
719 {
720 #if HAVE_TERMIOS_H
721     if(!run_as_daemon){
722     struct termios tty;
723
724     if (tcgetattr (0, &tty) == 0) {
725     oldtty = tty;
726     restore_tty = 1;
727     atexit(term_exit);
728
729     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
730                           |INLCR|IGNCR|ICRNL|IXON);
731     tty.c_oflag |= OPOST;
732     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
733     tty.c_cflag &= ~(CSIZE|PARENB);
734     tty.c_cflag |= CS8;
735     tty.c_cc[VMIN] = 1;
736     tty.c_cc[VTIME] = 0;
737
738     tcsetattr (0, TCSANOW, &tty);
739     }
740     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
741     }
742 #endif
743     avformat_network_deinit();
744
745     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
746     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
747 #ifdef SIGXCPU
748     signal(SIGXCPU, sigterm_handler);
749 #endif
750 }
751
752 /* read a key without blocking */
753 static int read_key(void)
754 {
755     unsigned char ch;
756 #if HAVE_TERMIOS_H
757     int n = 1;
758     struct timeval tv;
759     fd_set rfds;
760
761     FD_ZERO(&rfds);
762     FD_SET(0, &rfds);
763     tv.tv_sec = 0;
764     tv.tv_usec = 0;
765     n = select(1, &rfds, NULL, NULL, &tv);
766     if (n > 0) {
767         n = read(0, &ch, 1);
768         if (n == 1)
769             return ch;
770
771         return n;
772     }
773 #elif HAVE_KBHIT
774 #    if HAVE_PEEKNAMEDPIPE
775     static int is_pipe;
776     static HANDLE input_handle;
777     DWORD dw, nchars;
778     if(!input_handle){
779         input_handle = GetStdHandle(STD_INPUT_HANDLE);
780         is_pipe = !GetConsoleMode(input_handle, &dw);
781     }
782
783     if (stdin->_cnt > 0) {
784         read(0, &ch, 1);
785         return ch;
786     }
787     if (is_pipe) {
788         /* When running under a GUI, you will end here. */
789         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
790             return -1;
791         //Read it
792         if(nchars != 0) {
793             read(0, &ch, 1);
794             return ch;
795         }else{
796             return -1;
797         }
798     }
799 #    endif
800     if(kbhit())
801         return(getch());
802 #endif
803     return -1;
804 }
805
806 static int decode_interrupt_cb(void *ctx)
807 {
808     return received_nb_signals > 1;
809 }
810
811 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
812
813 void av_noreturn exit_program(int ret)
814 {
815     int i;
816
817     /* close files */
818     for (i = 0; i < nb_output_files; i++) {
819         AVFormatContext *s = output_files[i].ctx;
820         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
821             avio_close(s->pb);
822         avformat_free_context(s);
823         av_dict_free(&output_files[i].opts);
824     }
825     for (i = 0; i < nb_output_streams; i++) {
826         AVBitStreamFilterContext *bsfc = output_streams[i].bitstream_filters;
827         while (bsfc) {
828             AVBitStreamFilterContext *next = bsfc->next;
829             av_bitstream_filter_close(bsfc);
830             bsfc = next;
831         }
832         output_streams[i].bitstream_filters = NULL;
833
834         if (output_streams[i].output_frame) {
835             AVFrame *frame = output_streams[i].output_frame;
836             if (frame->extended_data != frame->data)
837                 av_freep(&frame->extended_data);
838             av_freep(&frame);
839         }
840     }
841     for (i = 0; i < nb_input_files; i++) {
842         avformat_close_input(&input_files[i].ctx);
843     }
844     for (i = 0; i < nb_input_streams; i++) {
845         av_freep(&input_streams[i].decoded_frame);
846         av_freep(&input_streams[i].filtered_frame);
847         av_dict_free(&input_streams[i].opts);
848         free_buffer_pool(&input_streams[i]);
849     }
850
851     if (vstats_file)
852         fclose(vstats_file);
853     av_free(vstats_filename);
854
855     av_freep(&input_streams);
856     av_freep(&input_files);
857     av_freep(&output_streams);
858     av_freep(&output_files);
859
860     uninit_opts();
861     av_free(audio_buf);
862     allocated_audio_buf_size = 0;
863
864 #if CONFIG_AVFILTER
865     avfilter_uninit();
866 #endif
867     avformat_network_deinit();
868
869     av_freep(&input_tmp);
870
871     if (received_sigterm) {
872         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
873                (int) received_sigterm);
874         exit (255);
875     }
876
877     exit(ret); /* not all OS-es handle main() return value */
878 }
879
880 static void assert_avoptions(AVDictionary *m)
881 {
882     AVDictionaryEntry *t;
883     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
884         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
885         exit_program(1);
886     }
887 }
888
889 static void assert_codec_experimental(AVCodecContext *c, int encoder)
890 {
891     const char *codec_string = encoder ? "encoder" : "decoder";
892     AVCodec *codec;
893     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
894         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
895         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
896                 "results.\nAdd '-strict experimental' if you want to use it.\n",
897                 codec_string, c->codec->name);
898         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
899         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
900             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
901                    codec_string, codec->name);
902         exit_program(1);
903     }
904 }
905
906 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
907 {
908     if (codec && codec->sample_fmts) {
909         const enum AVSampleFormat *p = codec->sample_fmts;
910         for (; *p != -1; p++) {
911             if (*p == st->codec->sample_fmt)
912                 break;
913         }
914         if (*p == -1) {
915             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
916                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
917             if(av_get_sample_fmt_name(st->codec->sample_fmt))
918             av_log(NULL, AV_LOG_WARNING,
919                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
920                    av_get_sample_fmt_name(st->codec->sample_fmt),
921                    codec->name,
922                    av_get_sample_fmt_name(codec->sample_fmts[0]));
923             st->codec->sample_fmt = codec->sample_fmts[0];
924         }
925     }
926 }
927
928 static void choose_sample_rate(AVStream *st, AVCodec *codec)
929 {
930     if (codec && codec->supported_samplerates) {
931         const int *p  = codec->supported_samplerates;
932         int best      = 0;
933         int best_dist = INT_MAX;
934         for (; *p; p++) {
935             int dist = abs(st->codec->sample_rate - *p);
936             if (dist < best_dist) {
937                 best_dist = dist;
938                 best      = *p;
939             }
940         }
941         if (best_dist) {
942             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
943         }
944         st->codec->sample_rate = best;
945     }
946 }
947
948 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
949 {
950     if (codec && codec->pix_fmts) {
951         const enum PixelFormat *p = codec->pix_fmts;
952         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
953         enum PixelFormat best= PIX_FMT_NONE;
954         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
955             if (st->codec->codec_id == CODEC_ID_MJPEG) {
956                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
957             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
958                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
959                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
960             }
961         }
962         for (; *p != PIX_FMT_NONE; p++) {
963             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
964             if (*p == st->codec->pix_fmt)
965                 break;
966         }
967         if (*p == PIX_FMT_NONE) {
968             if (st->codec->pix_fmt != PIX_FMT_NONE)
969                 av_log(NULL, AV_LOG_WARNING,
970                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
971                        av_pix_fmt_descriptors[st->codec->pix_fmt].name,
972                        codec->name,
973                        av_pix_fmt_descriptors[best].name);
974             st->codec->pix_fmt = best;
975         }
976     }
977 }
978
979 static double get_sync_ipts(const OutputStream *ost)
980 {
981     const InputStream *ist = ost->sync_ist;
982     OutputFile *of = &output_files[ost->file_index];
983     return (double)(ist->pts - of->start_time) / AV_TIME_BASE;
984 }
985
986 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
987 {
988     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
989     AVCodecContext          *avctx = ost->st->codec;
990     int ret;
991
992     /*
993      * Audio encoders may split the packets --  #frames in != #packets out.
994      * But there is no reordering, so we can limit the number of output packets
995      * by simply dropping them here.
996      * Counting encoded video frames needs to be done separately because of
997      * reordering, see do_video_out()
998      */
999     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1000         if (ost->frame_number >= ost->max_frames)
1001             return;
1002         ost->frame_number++;
1003     }
1004
1005     while (bsfc) {
1006         AVPacket new_pkt = *pkt;
1007         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1008                                            &new_pkt.data, &new_pkt.size,
1009                                            pkt->data, pkt->size,
1010                                            pkt->flags & AV_PKT_FLAG_KEY);
1011         if (a > 0) {
1012             av_free_packet(pkt);
1013             new_pkt.destruct = av_destruct_packet;
1014         } else if (a < 0) {
1015             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1016                    bsfc->filter->name, pkt->stream_index,
1017                    avctx->codec ? avctx->codec->name : "copy");
1018             print_error("", a);
1019             if (exit_on_error)
1020                 exit_program(1);
1021         }
1022         *pkt = new_pkt;
1023
1024         bsfc = bsfc->next;
1025     }
1026
1027     ret = av_interleaved_write_frame(s, pkt);
1028     if (ret < 0) {
1029         print_error("av_interleaved_write_frame()", ret);
1030         exit_program(1);
1031     }
1032 }
1033
1034 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1035 {
1036     int fill_char = 0x00;
1037     if (sample_fmt == AV_SAMPLE_FMT_U8)
1038         fill_char = 0x80;
1039     memset(buf, fill_char, size);
1040 }
1041
1042 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
1043                               const uint8_t *buf, int buf_size)
1044 {
1045     AVCodecContext *enc = ost->st->codec;
1046     AVFrame *frame = NULL;
1047     AVPacket pkt;
1048     int ret, got_packet;
1049
1050     av_init_packet(&pkt);
1051     pkt.data = NULL;
1052     pkt.size = 0;
1053
1054     if (buf) {
1055         if (!ost->output_frame) {
1056             ost->output_frame = avcodec_alloc_frame();
1057             if (!ost->output_frame) {
1058                 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
1059                 exit_program(1);
1060             }
1061         }
1062         frame = ost->output_frame;
1063         if (frame->extended_data != frame->data)
1064             av_freep(&frame->extended_data);
1065         avcodec_get_frame_defaults(frame);
1066
1067         frame->nb_samples  = buf_size /
1068                              (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
1069         if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
1070                                             buf, buf_size, 1)) < 0) {
1071             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1072             exit_program(1);
1073         }
1074     }
1075
1076     got_packet = 0;
1077     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1078         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1079         exit_program(1);
1080     }
1081
1082     ret = pkt.size;
1083
1084     if (got_packet) {
1085         pkt.stream_index = ost->index;
1086         if (pkt.pts != AV_NOPTS_VALUE)
1087             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1088         if (pkt.duration > 0)
1089             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1090
1091         write_frame(s, &pkt, ost);
1092
1093         audio_size += pkt.size;
1094
1095         av_free_packet(&pkt);
1096     }
1097
1098     if (frame)
1099         ost->sync_opts += frame->nb_samples;
1100
1101     return ret;
1102 }
1103
1104 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1105                          InputStream *ist, AVFrame *decoded_frame)
1106 {
1107     uint8_t *buftmp;
1108     int64_t audio_buf_size, size_out;
1109
1110     int frame_bytes, resample_changed;
1111     AVCodecContext *enc = ost->st->codec;
1112     AVCodecContext *dec = ist->st->codec;
1113     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1114     int isize = av_get_bytes_per_sample(dec->sample_fmt);
1115     uint8_t *buf = decoded_frame->data[0];
1116     int size     = decoded_frame->nb_samples * dec->channels * isize;
1117     int64_t allocated_for_size = size;
1118
1119 need_realloc:
1120     audio_buf_size  = (allocated_for_size + isize * dec->channels - 1) / (isize * dec->channels);
1121     audio_buf_size  = (audio_buf_size * enc->sample_rate + dec->sample_rate) / dec->sample_rate;
1122     audio_buf_size  = audio_buf_size * 2 + 10000; // safety factors for the deprecated resampling API
1123     audio_buf_size  = FFMAX(audio_buf_size, enc->frame_size);
1124     audio_buf_size *= osize * enc->channels;
1125
1126     if (audio_buf_size > INT_MAX) {
1127         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
1128         exit_program(1);
1129     }
1130
1131     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1132     if (!audio_buf) {
1133         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1134         exit_program(1);
1135     }
1136
1137     if (enc->channels != dec->channels
1138      || enc->sample_fmt != dec->sample_fmt
1139      || enc->sample_rate!= dec->sample_rate
1140     )
1141         ost->audio_resample = 1;
1142
1143     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
1144                        ost->resample_channels    != dec->channels   ||
1145                        ost->resample_sample_rate != dec->sample_rate;
1146
1147     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
1148         if (resample_changed) {
1149             av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
1150                    ist->file_index, ist->st->index,
1151                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1152                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1153             ost->resample_sample_fmt  = dec->sample_fmt;
1154             ost->resample_channels    = dec->channels;
1155             ost->resample_sample_rate = dec->sample_rate;
1156             swr_free(&ost->swr);
1157         }
1158         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1159         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
1160             ost->resample_sample_fmt  == enc->sample_fmt &&
1161             ost->resample_channels    == enc->channels   &&
1162             ost->resample_sample_rate == enc->sample_rate) {
1163             //ost->swr = NULL;
1164             ost->audio_resample = 0;
1165         } else {
1166             ost->swr = swr_alloc_set_opts(ost->swr,
1167                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
1168                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
1169                                           0, NULL);
1170             if (ost->audio_channels_mapped)
1171                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
1172             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
1173             if (ost->audio_channels_mapped) {
1174                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
1175                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
1176             }
1177             if (av_opt_set_int(ost->swr, "ich", dec->channels, 0) < 0) {
1178                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of input channels\n");
1179                 exit_program(1);
1180             }
1181             if (av_opt_set_int(ost->swr, "och", enc->channels, 0) < 0) {
1182                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of output channels\n");
1183                 exit_program(1);
1184             }
1185             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
1186             if(ost->swr && swr_init(ost->swr) < 0){
1187                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
1188                 swr_free(&ost->swr);
1189             }
1190
1191             if (!ost->swr) {
1192                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1193                         dec->channels, dec->sample_rate,
1194                         enc->channels, enc->sample_rate);
1195                 exit_program(1);
1196             }
1197         }
1198     }
1199
1200     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1201
1202     if (audio_sync_method) {
1203         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts -
1204                        av_fifo_size(ost->fifo) / (enc->channels * osize);
1205         int idelta = delta * dec->sample_rate / enc->sample_rate;
1206         int byte_delta = idelta * isize * dec->channels;
1207
1208         // FIXME resample delay
1209         if (fabs(delta) > 50) {
1210             if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1211                 if (byte_delta < 0) {
1212                     byte_delta = FFMAX(byte_delta, -size);
1213                     size += byte_delta;
1214                     buf  -= byte_delta;
1215                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1216                            -byte_delta / (isize * dec->channels));
1217                     if (!size)
1218                         return;
1219                     ist->is_start = 0;
1220                 } else {
1221                     input_tmp = av_realloc(input_tmp, byte_delta + size);
1222
1223                     if (byte_delta > allocated_for_size - size) {
1224                         allocated_for_size = byte_delta + (int64_t)size;
1225                         goto need_realloc;
1226                     }
1227                     ist->is_start = 0;
1228
1229                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1230                     memcpy(input_tmp + byte_delta, buf, size);
1231                     buf = input_tmp;
1232                     size += byte_delta;
1233                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1234                 }
1235             } else if (audio_sync_method > 1) {
1236                 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1237                 av_assert0(ost->audio_resample);
1238                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1239                        delta, comp, enc->sample_rate);
1240 //                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));
1241                 swr_set_compensation(ost->swr, comp, enc->sample_rate);
1242             }
1243         }
1244     } else
1245         ost->sync_opts = lrintf(get_sync_ipts(ost) * enc->sample_rate) -
1246                                 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1247
1248     if (ost->audio_resample || ost->audio_channels_mapped) {
1249         buftmp = audio_buf;
1250         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
1251                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
1252         size_out = size_out * enc->channels * osize;
1253     } else {
1254         buftmp = buf;
1255         size_out = size;
1256     }
1257
1258     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1259
1260     /* now encode as many frames as possible */
1261     if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1262         /* output resampled raw samples */
1263         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1264             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1265             exit_program(1);
1266         }
1267         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1268
1269         frame_bytes = enc->frame_size * osize * enc->channels;
1270
1271         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1272             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1273             encode_audio_frame(s, ost, audio_buf, frame_bytes);
1274         }
1275     } else {
1276         encode_audio_frame(s, ost, buftmp, size_out);
1277     }
1278 }
1279
1280 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1281 {
1282     AVCodecContext *dec;
1283     AVPicture *picture2;
1284     AVPicture picture_tmp;
1285     uint8_t *buf = 0;
1286
1287     dec = ist->st->codec;
1288
1289     /* deinterlace : must be done before any resize */
1290     if (do_deinterlace) {
1291         int size;
1292
1293         /* create temporary picture */
1294         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1295         buf  = av_malloc(size);
1296         if (!buf)
1297             return;
1298
1299         picture2 = &picture_tmp;
1300         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1301
1302         if (avpicture_deinterlace(picture2, picture,
1303                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1304             /* if error, do not deinterlace */
1305             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1306             av_free(buf);
1307             buf = NULL;
1308             picture2 = picture;
1309         }
1310     } else {
1311         picture2 = picture;
1312     }
1313
1314     if (picture != picture2)
1315         *picture = *picture2;
1316     *bufp = buf;
1317 }
1318
1319 static void do_subtitle_out(AVFormatContext *s,
1320                             OutputStream *ost,
1321                             InputStream *ist,
1322                             AVSubtitle *sub,
1323                             int64_t pts)
1324 {
1325     static uint8_t *subtitle_out = NULL;
1326     int subtitle_out_max_size = 1024 * 1024;
1327     int subtitle_out_size, nb, i;
1328     AVCodecContext *enc;
1329     AVPacket pkt;
1330
1331     if (pts == AV_NOPTS_VALUE) {
1332         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1333         if (exit_on_error)
1334             exit_program(1);
1335         return;
1336     }
1337
1338     enc = ost->st->codec;
1339
1340     if (!subtitle_out) {
1341         subtitle_out = av_malloc(subtitle_out_max_size);
1342     }
1343
1344     /* Note: DVB subtitle need one packet to draw them and one other
1345        packet to clear them */
1346     /* XXX: signal it in the codec context ? */
1347     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1348         nb = 2;
1349     else
1350         nb = 1;
1351
1352     for (i = 0; i < nb; i++) {
1353         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1354         // start_display_time is required to be 0
1355         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1356         sub->end_display_time  -= sub->start_display_time;
1357         sub->start_display_time = 0;
1358         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1359                                                     subtitle_out_max_size, sub);
1360         if (subtitle_out_size < 0) {
1361             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1362             exit_program(1);
1363         }
1364
1365         av_init_packet(&pkt);
1366         pkt.stream_index = ost->index;
1367         pkt.data = subtitle_out;
1368         pkt.size = subtitle_out_size;
1369         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1370         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1371             /* XXX: the pts correction is handled here. Maybe handling
1372                it in the codec would be better */
1373             if (i == 0)
1374                 pkt.pts += 90 * sub->start_display_time;
1375             else
1376                 pkt.pts += 90 * sub->end_display_time;
1377         }
1378         write_frame(s, &pkt, ost);
1379     }
1380 }
1381
1382 static int bit_buffer_size = 1024 * 256;
1383 static uint8_t *bit_buffer = NULL;
1384
1385 static void do_video_resample(OutputStream *ost,
1386                               InputStream *ist,
1387                               AVFrame *in_picture,
1388                               AVFrame **out_picture)
1389 {
1390 #if CONFIG_AVFILTER
1391     *out_picture = in_picture;
1392 #else
1393     AVCodecContext *dec = ist->st->codec;
1394     AVCodecContext *enc = ost->st->codec;
1395     int resample_changed = ost->resample_width   != in_picture->width  ||
1396                            ost->resample_height  != in_picture->height ||
1397                            ost->resample_pix_fmt != in_picture->format;
1398
1399     *out_picture = in_picture;
1400     if (resample_changed) {
1401         av_log(NULL, AV_LOG_INFO,
1402                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s / frm size:%dx%d fmt:%s\n",
1403                ist->file_index, ist->st->index,
1404                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1405                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt),
1406                in_picture->width, in_picture->height, av_get_pix_fmt_name(in_picture->format));
1407         ost->resample_width   = in_picture->width;
1408         ost->resample_height  = in_picture->height;
1409         ost->resample_pix_fmt = in_picture->format;
1410     }
1411
1412     ost->video_resample = in_picture->width   != enc->width  ||
1413                           in_picture->height  != enc->height ||
1414                           in_picture->format  != enc->pix_fmt;
1415
1416     if (ost->video_resample) {
1417         *out_picture = &ost->resample_frame;
1418         if (!ost->img_resample_ctx || resample_changed) {
1419             /* initialize the destination picture */
1420             if (!ost->resample_frame.data[0]) {
1421                 avcodec_get_frame_defaults(&ost->resample_frame);
1422                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1423                                     enc->width, enc->height)) {
1424                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1425                     exit_program(1);
1426                 }
1427             }
1428             /* initialize a new scaler context */
1429             sws_freeContext(ost->img_resample_ctx);
1430             ost->img_resample_ctx = sws_getContext(in_picture->width, in_picture->height, in_picture->format,
1431                                                    enc->width, enc->height, enc->pix_fmt,
1432                                                    ost->sws_flags, NULL, NULL, NULL);
1433             if (ost->img_resample_ctx == NULL) {
1434                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1435                 exit_program(1);
1436             }
1437         }
1438         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1439               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1440     }
1441 #endif
1442 }
1443
1444
1445 static void do_video_out(AVFormatContext *s,
1446                          OutputStream *ost,
1447                          InputStream *ist,
1448                          AVFrame *in_picture,
1449                          int *frame_size, float quality)
1450 {
1451     int nb_frames, i, ret, format_video_sync;
1452     AVFrame *final_picture;
1453     AVCodecContext *enc;
1454     double sync_ipts;
1455     double duration = 0;
1456
1457     enc = ost->st->codec;
1458
1459     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1460         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1461         if(ist->st->avg_frame_rate.num)
1462             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1463
1464         duration /= av_q2d(enc->time_base);
1465     }
1466
1467     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1468
1469     /* by default, we output a single frame */
1470     nb_frames = 1;
1471
1472     *frame_size = 0;
1473
1474     format_video_sync = video_sync_method;
1475     if (format_video_sync == VSYNC_AUTO)
1476         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1477
1478     if (format_video_sync != VSYNC_PASSTHROUGH && format_video_sync != VSYNC_DROP) {
1479         double vdelta = sync_ipts - ost->sync_opts + duration;
1480         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1481         if (vdelta < -1.1)
1482             nb_frames = 0;
1483         else if (format_video_sync == VSYNC_VFR) {
1484             if (vdelta <= -0.6) {
1485                 nb_frames = 0;
1486             } else if (vdelta > 0.6)
1487                 ost->sync_opts = lrintf(sync_ipts);
1488         } else if (vdelta > 1.1)
1489             nb_frames = lrintf(vdelta);
1490 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1491         if (nb_frames == 0) {
1492             ++nb_frames_drop;
1493             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1494         } else if (nb_frames > 1) {
1495             nb_frames_dup += nb_frames - 1;
1496             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1497         }
1498     } else
1499         ost->sync_opts = lrintf(sync_ipts);
1500
1501     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1502     if (nb_frames <= 0)
1503         return;
1504
1505     do_video_resample(ost, ist, in_picture, &final_picture);
1506
1507     /* duplicates frame if needed */
1508     for (i = 0; i < nb_frames; i++) {
1509         AVPacket pkt;
1510         av_init_packet(&pkt);
1511         pkt.stream_index = ost->index;
1512
1513         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1514             enc->codec->id == CODEC_ID_RAWVIDEO) {
1515             /* raw pictures are written as AVPicture structure to
1516                avoid any copies. We support temporarily the older
1517                method. */
1518             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1519             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1520             pkt.data   = (uint8_t *)final_picture;
1521             pkt.size   =  sizeof(AVPicture);
1522             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1523             pkt.flags |= AV_PKT_FLAG_KEY;
1524
1525             write_frame(s, &pkt, ost);
1526         } else {
1527             AVFrame big_picture;
1528
1529             big_picture = *final_picture;
1530             /* better than nothing: use input picture interlaced
1531                settings */
1532             big_picture.interlaced_frame = in_picture->interlaced_frame;
1533             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1534                 if (ost->top_field_first == -1)
1535                     big_picture.top_field_first = in_picture->top_field_first;
1536                 else
1537                     big_picture.top_field_first = !!ost->top_field_first;
1538             }
1539
1540             /* handles same_quant here. This is not correct because it may
1541                not be a global option */
1542             big_picture.quality = quality;
1543             if (!enc->me_threshold)
1544                 big_picture.pict_type = 0;
1545 //            big_picture.pts = AV_NOPTS_VALUE;
1546             big_picture.pts = ost->sync_opts;
1547 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1548 // av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1549             if (ost->forced_kf_index < ost->forced_kf_count &&
1550                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1551                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1552                 ost->forced_kf_index++;
1553             }
1554             ret = avcodec_encode_video(enc,
1555                                        bit_buffer, bit_buffer_size,
1556                                        &big_picture);
1557             if (ret < 0) {
1558                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1559                 exit_program(1);
1560             }
1561
1562             if (ret > 0) {
1563                 pkt.data = bit_buffer;
1564                 pkt.size = ret;
1565                 if (!(enc->codec->capabilities & CODEC_CAP_DELAY))
1566                     pkt.pts = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1567                 if (enc->coded_frame->pts != AV_NOPTS_VALUE)
1568                     pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1569 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1570    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1571    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1572
1573                 if (enc->coded_frame->key_frame)
1574                     pkt.flags |= AV_PKT_FLAG_KEY;
1575                 if (format_video_sync == VSYNC_DROP)
1576                     pkt.pts = pkt.dts = AV_NOPTS_VALUE;
1577                 write_frame(s, &pkt, ost);
1578                 *frame_size = ret;
1579                 video_size += ret;
1580                 // fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1581                 //         enc->frame_number-1, ret, enc->pict_type);
1582                 /* if two pass, output log */
1583                 if (ost->logfile && enc->stats_out) {
1584                     fprintf(ost->logfile, "%s", enc->stats_out);
1585                 }
1586             }
1587         }
1588         ost->sync_opts++;
1589         /*
1590          * For video, number of frames in == number of packets out.
1591          * But there may be reordering, so we can't throw away frames on encoder
1592          * flush, we need to limit them here, before they go into encoder.
1593          */
1594         ost->frame_number++;
1595     }
1596 }
1597
1598 static double psnr(double d)
1599 {
1600     return -10.0 * log(d) / log(10.0);
1601 }
1602
1603 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1604                            int frame_size)
1605 {
1606     AVCodecContext *enc;
1607     int frame_number;
1608     double ti1, bitrate, avg_bitrate;
1609
1610     /* this is executed just the first time do_video_stats is called */
1611     if (!vstats_file) {
1612         vstats_file = fopen(vstats_filename, "w");
1613         if (!vstats_file) {
1614             perror("fopen");
1615             exit_program(1);
1616         }
1617     }
1618
1619     enc = ost->st->codec;
1620     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1621         frame_number = ost->frame_number;
1622         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1623         if (enc->flags&CODEC_FLAG_PSNR)
1624             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1625
1626         fprintf(vstats_file,"f_size= %6d ", frame_size);
1627         /* compute pts value */
1628         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1629         if (ti1 < 0.01)
1630             ti1 = 0.01;
1631
1632         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1633         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1634         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1635                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1636         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1637     }
1638 }
1639
1640 static void print_report(OutputFile *output_files,
1641                          OutputStream *ost_table, int nb_ostreams,
1642                          int is_last_report, int64_t timer_start, int64_t cur_time)
1643 {
1644     char buf[1024];
1645     OutputStream *ost;
1646     AVFormatContext *oc;
1647     int64_t total_size;
1648     AVCodecContext *enc;
1649     int frame_number, vid, i;
1650     double bitrate;
1651     int64_t pts = INT64_MAX;
1652     static int64_t last_time = -1;
1653     static int qp_histogram[52];
1654     int hours, mins, secs, us;
1655
1656     if (!print_stats && !is_last_report)
1657         return;
1658
1659     if (!is_last_report) {
1660         if (last_time == -1) {
1661             last_time = cur_time;
1662             return;
1663         }
1664         if ((cur_time - last_time) < 500000)
1665             return;
1666         last_time = cur_time;
1667     }
1668
1669
1670     oc = output_files[0].ctx;
1671
1672     total_size = avio_size(oc->pb);
1673     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1674         total_size = avio_tell(oc->pb);
1675         if (total_size < 0)
1676             total_size = 0;
1677     }
1678
1679     buf[0] = '\0';
1680     vid = 0;
1681     for (i = 0; i < nb_ostreams; i++) {
1682         float q = -1;
1683         ost = &ost_table[i];
1684         enc = ost->st->codec;
1685         if (!ost->stream_copy && enc->coded_frame)
1686             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1687         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1688             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1689         }
1690         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1691             float t = (cur_time-timer_start) / 1000000.0;
1692
1693             frame_number = ost->frame_number;
1694             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1695                      frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
1696             if (is_last_report)
1697                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1698             if (qp_hist) {
1699                 int j;
1700                 int qp = lrintf(q);
1701                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1702                     qp_histogram[qp]++;
1703                 for (j = 0; j < 32; j++)
1704                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1705             }
1706             if (enc->flags&CODEC_FLAG_PSNR) {
1707                 int j;
1708                 double error, error_sum = 0;
1709                 double scale, scale_sum = 0;
1710                 char type[3] = { 'Y','U','V' };
1711                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1712                 for (j = 0; j < 3; j++) {
1713                     if (is_last_report) {
1714                         error = enc->error[j];
1715                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1716                     } else {
1717                         error = enc->coded_frame->error[j];
1718                         scale = enc->width * enc->height * 255.0 * 255.0;
1719                     }
1720                     if (j)
1721                         scale /= 4;
1722                     error_sum += error;
1723                     scale_sum += scale;
1724                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1725                 }
1726                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1727             }
1728             vid = 1;
1729         }
1730         /* compute min output value */
1731         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1732                                       ost->st->time_base, AV_TIME_BASE_Q));
1733     }
1734
1735     secs = pts / AV_TIME_BASE;
1736     us = pts % AV_TIME_BASE;
1737     mins = secs / 60;
1738     secs %= 60;
1739     hours = mins / 60;
1740     mins %= 60;
1741
1742     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1743
1744     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1745              "size=%8.0fkB time=", total_size / 1024.0);
1746     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1747              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1748              (100 * us) / AV_TIME_BASE);
1749     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1750              "bitrate=%6.1fkbits/s", bitrate);
1751
1752     if (nb_frames_dup || nb_frames_drop)
1753         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1754                 nb_frames_dup, nb_frames_drop);
1755
1756     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1757
1758     fflush(stderr);
1759
1760     if (is_last_report) {
1761         int64_t raw= audio_size + video_size + extra_size;
1762         av_log(NULL, AV_LOG_INFO, "\n");
1763         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1764                video_size / 1024.0,
1765                audio_size / 1024.0,
1766                extra_size / 1024.0,
1767                100.0 * (total_size - raw) / raw
1768         );
1769         if(video_size + audio_size + extra_size == 0){
1770             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1771         }
1772     }
1773 }
1774
1775 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1776 {
1777     int i, ret;
1778
1779     for (i = 0; i < nb_ostreams; i++) {
1780         OutputStream   *ost = &ost_table[i];
1781         AVCodecContext *enc = ost->st->codec;
1782         AVFormatContext *os = output_files[ost->file_index].ctx;
1783         int stop_encoding = 0;
1784
1785         if (!ost->encoding_needed)
1786             continue;
1787
1788         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1789             continue;
1790         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1791             continue;
1792
1793         for (;;) {
1794             AVPacket pkt;
1795             int fifo_bytes;
1796             av_init_packet(&pkt);
1797             pkt.data = NULL;
1798             pkt.size = 0;
1799
1800             switch (ost->st->codec->codec_type) {
1801             case AVMEDIA_TYPE_AUDIO:
1802                 fifo_bytes = av_fifo_size(ost->fifo);
1803                 if (fifo_bytes > 0) {
1804                     /* encode any samples remaining in fifo */
1805                     int frame_bytes = fifo_bytes;
1806
1807                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1808
1809                     /* pad last frame with silence if needed */
1810                     if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
1811                         frame_bytes = enc->frame_size * enc->channels *
1812                                       av_get_bytes_per_sample(enc->sample_fmt);
1813                         if (allocated_audio_buf_size < frame_bytes)
1814                             exit_program(1);
1815                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1816                     }
1817                     encode_audio_frame(os, ost, audio_buf, frame_bytes);
1818                 } else {
1819                     /* flush encoder with NULL frames until it is done
1820                        returning packets */
1821                     if (encode_audio_frame(os, ost, NULL, 0) == 0) {
1822                         stop_encoding = 1;
1823                         break;
1824                     }
1825                 }
1826                 break;
1827             case AVMEDIA_TYPE_VIDEO:
1828                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1829                 if (ret < 0) {
1830                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1831                     exit_program(1);
1832                 }
1833                 video_size += ret;
1834                 if (enc->coded_frame && enc->coded_frame->key_frame)
1835                     pkt.flags |= AV_PKT_FLAG_KEY;
1836                 if (ost->logfile && enc->stats_out) {
1837                     fprintf(ost->logfile, "%s", enc->stats_out);
1838                 }
1839                 if (ret <= 0) {
1840                     stop_encoding = 1;
1841                     break;
1842                 }
1843                 pkt.stream_index = ost->index;
1844                 pkt.data = bit_buffer;
1845                 pkt.size = ret;
1846                 if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1847                     pkt.pts = av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1848                 write_frame(os, &pkt, ost);
1849                 break;
1850             default:
1851                 stop_encoding = 1;
1852             }
1853             if (stop_encoding)
1854                 break;
1855         }
1856     }
1857 }
1858
1859 /*
1860  * Check whether a packet from ist should be written into ost at this time
1861  */
1862 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1863 {
1864     OutputFile *of = &output_files[ost->file_index];
1865     int ist_index  = ist - input_streams;
1866
1867     if (ost->source_index != ist_index)
1868         return 0;
1869
1870     if (of->start_time && ist->pts < of->start_time)
1871         return 0;
1872
1873     if (of->recording_time != INT64_MAX &&
1874         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1875                       (AVRational){ 1, 1000000 }) >= 0) {
1876         ost->is_past_recording_time = 1;
1877         return 0;
1878     }
1879
1880     return 1;
1881 }
1882
1883 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1884 {
1885     OutputFile *of = &output_files[ost->file_index];
1886     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1887     AVPicture pict;
1888     AVPacket opkt;
1889
1890     av_init_packet(&opkt);
1891
1892     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1893         !ost->copy_initial_nonkeyframes)
1894         return;
1895
1896     /* force the input stream PTS */
1897     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1898         audio_size += pkt->size;
1899     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1900         video_size += pkt->size;
1901         ost->sync_opts++;
1902     }
1903
1904     opkt.stream_index = ost->index;
1905     if (pkt->pts != AV_NOPTS_VALUE)
1906         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1907     else
1908         opkt.pts = AV_NOPTS_VALUE;
1909
1910     if (pkt->dts == AV_NOPTS_VALUE)
1911         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1912     else
1913         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1914     opkt.dts -= ost_tb_start_time;
1915
1916     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1917     opkt.flags    = pkt->flags;
1918
1919     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1920     if (  ost->st->codec->codec_id != CODEC_ID_H264
1921        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1922        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1923        ) {
1924         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1925             opkt.destruct = av_destruct_packet;
1926     } else {
1927         opkt.data = pkt->data;
1928         opkt.size = pkt->size;
1929     }
1930     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1931         /* store AVPicture in AVPacket, as expected by the output format */
1932         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1933         opkt.data = (uint8_t *)&pict;
1934         opkt.size = sizeof(AVPicture);
1935         opkt.flags |= AV_PKT_FLAG_KEY;
1936     }
1937
1938     write_frame(of->ctx, &opkt, ost);
1939     ost->st->codec->frame_number++;
1940     av_free_packet(&opkt);
1941 }
1942
1943 static void rate_emu_sleep(InputStream *ist)
1944 {
1945     if (input_files[ist->file_index].rate_emu) {
1946         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1947         int64_t now = av_gettime() - ist->start;
1948         if (pts > now)
1949             usleep(pts - now);
1950     }
1951 }
1952
1953 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1954 {
1955     AVFrame *decoded_frame;
1956     AVCodecContext *avctx = ist->st->codec;
1957     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1958     int i, ret;
1959
1960     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1961         return AVERROR(ENOMEM);
1962     else
1963         avcodec_get_frame_defaults(ist->decoded_frame);
1964     decoded_frame = ist->decoded_frame;
1965
1966     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1967     if (ret < 0) {
1968         return ret;
1969     }
1970
1971     if (!*got_output) {
1972         /* no audio frame */
1973         return ret;
1974     }
1975
1976     /* if the decoder provides a pts, use it instead of the last packet pts.
1977        the decoder could be delaying output by a packet or more. */
1978     if (decoded_frame->pts != AV_NOPTS_VALUE)
1979         ist->next_pts = decoded_frame->pts;
1980
1981     /* increment next_pts to use for the case where the input stream does not
1982        have timestamps or there are multiple frames in the packet */
1983     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1984                      avctx->sample_rate;
1985
1986     // preprocess audio (volume)
1987     if (audio_volume != 256) {
1988         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1989         void *samples = decoded_frame->data[0];
1990         switch (avctx->sample_fmt) {
1991         case AV_SAMPLE_FMT_U8:
1992         {
1993             uint8_t *volp = samples;
1994             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1995                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1996                 *volp++ = av_clip_uint8(v);
1997             }
1998             break;
1999         }
2000         case AV_SAMPLE_FMT_S16:
2001         {
2002             int16_t *volp = samples;
2003             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2004                 int v = ((*volp) * audio_volume + 128) >> 8;
2005                 *volp++ = av_clip_int16(v);
2006             }
2007             break;
2008         }
2009         case AV_SAMPLE_FMT_S32:
2010         {
2011             int32_t *volp = samples;
2012             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2013                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2014                 *volp++ = av_clipl_int32(v);
2015             }
2016             break;
2017         }
2018         case AV_SAMPLE_FMT_FLT:
2019         {
2020             float *volp = samples;
2021             float scale = audio_volume / 256.f;
2022             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2023                 *volp++ *= scale;
2024             }
2025             break;
2026         }
2027         case AV_SAMPLE_FMT_DBL:
2028         {
2029             double *volp = samples;
2030             double scale = audio_volume / 256.;
2031             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2032                 *volp++ *= scale;
2033             }
2034             break;
2035         }
2036         default:
2037             av_log(NULL, AV_LOG_FATAL,
2038                    "Audio volume adjustment on sample format %s is not supported.\n",
2039                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2040             exit_program(1);
2041         }
2042     }
2043
2044     rate_emu_sleep(ist);
2045
2046     for (i = 0; i < nb_output_streams; i++) {
2047         OutputStream *ost = &output_streams[i];
2048
2049         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2050             continue;
2051         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
2052     }
2053
2054     return ret;
2055 }
2056
2057 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
2058 {
2059     AVFrame *decoded_frame, *filtered_frame = NULL;
2060     void *buffer_to_free = NULL;
2061     int i, ret = 0;
2062     float quality = 0;
2063 #if CONFIG_AVFILTER
2064     int frame_available = 1;
2065 #endif
2066     int duration=0;
2067     int64_t *best_effort_timestamp;
2068     AVRational *frame_sample_aspect;
2069
2070     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2071         return AVERROR(ENOMEM);
2072     else
2073         avcodec_get_frame_defaults(ist->decoded_frame);
2074     decoded_frame = ist->decoded_frame;
2075     pkt->pts  = *pkt_pts;
2076     pkt->dts  = *pkt_dts;
2077     *pkt_pts  = AV_NOPTS_VALUE;
2078
2079     if (pkt->duration) {
2080         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2081     } else if(ist->st->codec->time_base.num != 0) {
2082         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2083         duration = ((int64_t)AV_TIME_BASE *
2084                           ist->st->codec->time_base.num * ticks) /
2085                           ist->st->codec->time_base.den;
2086     }
2087
2088     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
2089         *pkt_dts += duration;
2090     }else
2091         *pkt_dts = AV_NOPTS_VALUE;
2092
2093     ret = avcodec_decode_video2(ist->st->codec,
2094                                 decoded_frame, got_output, pkt);
2095     if (ret < 0)
2096         return ret;
2097
2098     quality = same_quant ? decoded_frame->quality : 0;
2099     if (!*got_output) {
2100         /* no picture yet */
2101         return ret;
2102     }
2103
2104     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
2105     if(*best_effort_timestamp != AV_NOPTS_VALUE)
2106         ist->next_pts = ist->pts = *best_effort_timestamp;
2107
2108     ist->next_pts += duration;
2109     pkt->size = 0;
2110
2111     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2112
2113 #if CONFIG_AVFILTER
2114     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2115     for(i=0;i<nb_output_streams;i++) {
2116         OutputStream *ost = ost = &output_streams[i];
2117         if(check_output_constraints(ist, ost) && ost->encoding_needed){
2118             if (!frame_sample_aspect->num)
2119                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
2120             decoded_frame->pts = ist->pts;
2121             if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER) {
2122                 FrameBuffer      *buf = decoded_frame->opaque;
2123                 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2124                                             decoded_frame->data, decoded_frame->linesize,
2125                                             AV_PERM_READ | AV_PERM_PRESERVE,
2126                                             ist->st->codec->width, ist->st->codec->height,
2127                                             ist->st->codec->pix_fmt);
2128
2129                 avfilter_copy_frame_props(fb, decoded_frame);
2130                 fb->pts                 = ist->pts;
2131                 fb->buf->priv           = buf;
2132                 fb->buf->free           = filter_release_buffer;
2133
2134                 buf->refcount++;
2135                 av_buffersrc_buffer(ost->input_video_filter, fb);
2136             } else
2137             if((av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE)) < 0){
2138                 av_log(0, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2139                 exit_program(1);
2140             }
2141         }
2142     }
2143 #endif
2144
2145     rate_emu_sleep(ist);
2146
2147     for (i = 0; i < nb_output_streams; i++) {
2148         OutputStream *ost = &output_streams[i];
2149         int frame_size;
2150
2151         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2152             continue;
2153
2154 #if CONFIG_AVFILTER
2155         if (ost->input_video_filter) {
2156             frame_available = av_buffersink_poll_frame(ost->output_video_filter);
2157         }
2158         while (frame_available) {
2159             if (ost->output_video_filter) {
2160                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
2161                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0){
2162                     av_log(0, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
2163                     goto cont;
2164                 }
2165                 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2166                     av_free(buffer_to_free);
2167                     return AVERROR(ENOMEM);
2168                 } else
2169                     avcodec_get_frame_defaults(ist->filtered_frame);
2170                 filtered_frame = ist->filtered_frame;
2171                 *filtered_frame= *decoded_frame; //for me_threshold
2172                 if (ost->picref) {
2173                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
2174                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2175                 }
2176             }
2177             if (ost->picref->video && !ost->frame_aspect_ratio)
2178                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
2179 #else
2180             filtered_frame = decoded_frame;
2181 #endif
2182
2183             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2184                          same_quant ? quality : ost->st->codec->global_quality);
2185             if (vstats_filename && frame_size)
2186                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2187 #if CONFIG_AVFILTER
2188             cont:
2189             frame_available = ost->output_video_filter && av_buffersink_poll_frame(ost->output_video_filter);
2190             avfilter_unref_buffer(ost->picref);
2191         }
2192 #endif
2193     }
2194
2195     av_free(buffer_to_free);
2196     return ret;
2197 }
2198
2199 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2200 {
2201     AVSubtitle subtitle;
2202     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2203                                           &subtitle, got_output, pkt);
2204     if (ret < 0)
2205         return ret;
2206     if (!*got_output)
2207         return ret;
2208
2209     rate_emu_sleep(ist);
2210
2211     for (i = 0; i < nb_output_streams; i++) {
2212         OutputStream *ost = &output_streams[i];
2213
2214         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2215             continue;
2216
2217         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2218     }
2219
2220     avsubtitle_free(&subtitle);
2221     return ret;
2222 }
2223
2224 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2225 static int output_packet(InputStream *ist,
2226                          OutputStream *ost_table, int nb_ostreams,
2227                          const AVPacket *pkt)
2228 {
2229     int ret = 0, i;
2230     int got_output;
2231     int64_t pkt_dts = AV_NOPTS_VALUE;
2232     int64_t pkt_pts = AV_NOPTS_VALUE;
2233
2234     AVPacket avpkt;
2235
2236     if (ist->next_pts == AV_NOPTS_VALUE)
2237         ist->next_pts = ist->pts;
2238
2239     if (pkt == NULL) {
2240         /* EOF handling */
2241         av_init_packet(&avpkt);
2242         avpkt.data = NULL;
2243         avpkt.size = 0;
2244         goto handle_eof;
2245     } else {
2246         avpkt = *pkt;
2247     }
2248
2249     if (pkt->dts != AV_NOPTS_VALUE) {
2250         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2251             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2252         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2253     }
2254     if(pkt->pts != AV_NOPTS_VALUE)
2255         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2256
2257     // while we have more to decode or while the decoder did output something on EOF
2258     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2259     handle_eof:
2260
2261         ist->pts = ist->next_pts;
2262
2263         if (avpkt.size && avpkt.size != pkt->size) {
2264             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2265                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2266             ist->showed_multi_packet_warning = 1;
2267         }
2268
2269         switch (ist->st->codec->codec_type) {
2270         case AVMEDIA_TYPE_AUDIO:
2271             ret = transcode_audio    (ist, &avpkt, &got_output);
2272             break;
2273         case AVMEDIA_TYPE_VIDEO:
2274             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2275             break;
2276         case AVMEDIA_TYPE_SUBTITLE:
2277             ret = transcode_subtitles(ist, &avpkt, &got_output);
2278             break;
2279         default:
2280             return -1;
2281         }
2282
2283         if (ret < 0)
2284             return ret;
2285
2286         avpkt.dts=
2287         avpkt.pts= AV_NOPTS_VALUE;
2288
2289         // touch data and size only if not EOF
2290         if (pkt) {
2291             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2292                 ret = avpkt.size;
2293             avpkt.data += ret;
2294             avpkt.size -= ret;
2295         }
2296         if (!got_output) {
2297             continue;
2298         }
2299     }
2300
2301     /* handle stream copy */
2302     if (!ist->decoding_needed) {
2303         rate_emu_sleep(ist);
2304         ist->pts = ist->next_pts;
2305         switch (ist->st->codec->codec_type) {
2306         case AVMEDIA_TYPE_AUDIO:
2307             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2308                              ist->st->codec->sample_rate;
2309             break;
2310         case AVMEDIA_TYPE_VIDEO:
2311             if (pkt->duration) {
2312                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2313             } else if(ist->st->codec->time_base.num != 0) {
2314                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2315                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2316                                   ist->st->codec->time_base.num * ticks) /
2317                                   ist->st->codec->time_base.den;
2318             }
2319             break;
2320         }
2321     }
2322     for (i = 0; pkt && i < nb_ostreams; i++) {
2323         OutputStream *ost = &ost_table[i];
2324
2325         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2326             continue;
2327
2328         do_streamcopy(ist, ost, pkt);
2329     }
2330
2331     return 0;
2332 }
2333
2334 static void print_sdp(OutputFile *output_files, int n)
2335 {
2336     char sdp[2048];
2337     int i;
2338     AVFormatContext **avc = av_malloc(sizeof(*avc) * n);
2339
2340     if (!avc)
2341         exit_program(1);
2342     for (i = 0; i < n; i++)
2343         avc[i] = output_files[i].ctx;
2344
2345     av_sdp_create(avc, n, sdp, sizeof(sdp));
2346     printf("SDP:\n%s\n", sdp);
2347     fflush(stdout);
2348     av_freep(&avc);
2349 }
2350
2351 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2352                              char *error, int error_len)
2353 {
2354     InputStream *ist = &input_streams[ist_index];
2355     if (ist->decoding_needed) {
2356         AVCodec *codec = ist->dec;
2357         if (!codec) {
2358             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2359                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2360             return AVERROR(EINVAL);
2361         }
2362
2363         ist->dr1 = codec->capabilities & CODEC_CAP_DR1;
2364         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2365             ist->st->codec->get_buffer     = codec_get_buffer;
2366             ist->st->codec->release_buffer = codec_release_buffer;
2367             ist->st->codec->opaque         = ist;
2368         }
2369
2370         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2371             av_dict_set(&ist->opts, "threads", "auto", 0);
2372         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2373             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2374                     ist->file_index, ist->st->index);
2375             return AVERROR(EINVAL);
2376         }
2377         assert_codec_experimental(ist->st->codec, 0);
2378         assert_avoptions(ist->opts);
2379     }
2380
2381     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2382     ist->next_pts = AV_NOPTS_VALUE;
2383     ist->is_start = 1;
2384
2385     return 0;
2386 }
2387
2388 static int transcode_init(OutputFile *output_files, int nb_output_files,
2389                           InputFile  *input_files,  int nb_input_files)
2390 {
2391     int ret = 0, i, j, k;
2392     AVFormatContext *oc;
2393     AVCodecContext *codec, *icodec;
2394     OutputStream *ost;
2395     InputStream *ist;
2396     char error[1024];
2397     int want_sdp = 1;
2398
2399     /* init framerate emulation */
2400     for (i = 0; i < nb_input_files; i++) {
2401         InputFile *ifile = &input_files[i];
2402         if (ifile->rate_emu)
2403             for (j = 0; j < ifile->nb_streams; j++)
2404                 input_streams[j + ifile->ist_index].start = av_gettime();
2405     }
2406
2407     /* output stream init */
2408     for (i = 0; i < nb_output_files; i++) {
2409         oc = output_files[i].ctx;
2410         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2411             av_dump_format(oc, i, oc->filename, 1);
2412             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2413             return AVERROR(EINVAL);
2414         }
2415     }
2416
2417     /* for each output stream, we compute the right encoding parameters */
2418     for (i = 0; i < nb_output_streams; i++) {
2419         ost = &output_streams[i];
2420         oc  = output_files[ost->file_index].ctx;
2421         ist = &input_streams[ost->source_index];
2422
2423         if (ost->attachment_filename)
2424             continue;
2425
2426         codec  = ost->st->codec;
2427         icodec = ist->st->codec;
2428
2429         ost->st->disposition          = ist->st->disposition;
2430         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2431         codec->chroma_sample_location = icodec->chroma_sample_location;
2432
2433         if (ost->stream_copy) {
2434             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2435
2436             if (extra_size > INT_MAX) {
2437                 return AVERROR(EINVAL);
2438             }
2439
2440             /* if stream_copy is selected, no need to decode or encode */
2441             codec->codec_id   = icodec->codec_id;
2442             codec->codec_type = icodec->codec_type;
2443
2444             if (!codec->codec_tag) {
2445                 if (!oc->oformat->codec_tag ||
2446                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2447                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2448                     codec->codec_tag = icodec->codec_tag;
2449             }
2450
2451             codec->bit_rate       = icodec->bit_rate;
2452             codec->rc_max_rate    = icodec->rc_max_rate;
2453             codec->rc_buffer_size = icodec->rc_buffer_size;
2454             codec->field_order    = icodec->field_order;
2455             codec->extradata      = av_mallocz(extra_size);
2456             if (!codec->extradata) {
2457                 return AVERROR(ENOMEM);
2458             }
2459             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2460             codec->extradata_size= icodec->extradata_size;
2461
2462             codec->time_base = ist->st->time_base;
2463             if(!strcmp(oc->oformat->name, "avi")) {
2464                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2465                                  && av_q2d(ist->st->time_base) < 1.0/500
2466                     || copy_tb==0){
2467                     codec->time_base = icodec->time_base;
2468                     codec->time_base.num *= icodec->ticks_per_frame;
2469                     codec->time_base.den *= 2;
2470                 }
2471             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2472                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2473                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2474             ) {
2475                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2476                                 && av_q2d(ist->st->time_base) < 1.0/500
2477                    || copy_tb==0){
2478                     codec->time_base = icodec->time_base;
2479                     codec->time_base.num *= icodec->ticks_per_frame;
2480                 }
2481             }
2482             av_reduce(&codec->time_base.num, &codec->time_base.den,
2483                         codec->time_base.num, codec->time_base.den, INT_MAX);
2484
2485             switch (codec->codec_type) {
2486             case AVMEDIA_TYPE_AUDIO:
2487                 if (audio_volume != 256) {
2488                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2489                     exit_program(1);
2490                 }
2491                 codec->channel_layout     = icodec->channel_layout;
2492                 codec->sample_rate        = icodec->sample_rate;
2493                 codec->channels           = icodec->channels;
2494                 codec->frame_size         = icodec->frame_size;
2495                 codec->audio_service_type = icodec->audio_service_type;
2496                 codec->block_align        = icodec->block_align;
2497                 break;
2498             case AVMEDIA_TYPE_VIDEO:
2499                 codec->pix_fmt            = icodec->pix_fmt;
2500                 codec->width              = icodec->width;
2501                 codec->height             = icodec->height;
2502                 codec->has_b_frames       = icodec->has_b_frames;
2503                 if (!codec->sample_aspect_ratio.num) {
2504                     codec->sample_aspect_ratio   =
2505                     ost->st->sample_aspect_ratio =
2506                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2507                         ist->st->codec->sample_aspect_ratio.num ?
2508                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2509                 }
2510                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2511                 break;
2512             case AVMEDIA_TYPE_SUBTITLE:
2513                 codec->width  = icodec->width;
2514                 codec->height = icodec->height;
2515                 break;
2516             case AVMEDIA_TYPE_DATA:
2517             case AVMEDIA_TYPE_ATTACHMENT:
2518                 break;
2519             default:
2520                 abort();
2521             }
2522         } else {
2523             if (!ost->enc)
2524                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2525
2526             ist->decoding_needed = 1;
2527             ost->encoding_needed = 1;
2528
2529             switch (codec->codec_type) {
2530             case AVMEDIA_TYPE_AUDIO:
2531                 ost->fifo = av_fifo_alloc(1024);
2532                 if (!ost->fifo) {
2533                     return AVERROR(ENOMEM);
2534                 }
2535                 if (!codec->sample_rate)
2536                     codec->sample_rate = icodec->sample_rate;
2537                 choose_sample_rate(ost->st, ost->enc);
2538                 codec->time_base = (AVRational){ 1, codec->sample_rate };
2539
2540                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2541                     codec->sample_fmt = icodec->sample_fmt;
2542                 choose_sample_fmt(ost->st, ost->enc);
2543
2544                 if (ost->audio_channels_mapped) {
2545                     /* the requested output channel is set to the number of
2546                      * -map_channel only if no -ac are specified */
2547                     if (!codec->channels) {
2548                         codec->channels       = ost->audio_channels_mapped;
2549                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2550                         if (!codec->channel_layout) {
2551                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2552                             exit_program(1);
2553                         }
2554                     }
2555                     /* fill unused channel mapping with -1 (which means a muted
2556                      * channel in case the number of output channels is bigger
2557                      * than the number of mapped channel) */
2558                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2559                         ost->audio_channels_map[j] = -1;
2560                 } else if (!codec->channels) {
2561                     codec->channels = icodec->channels;
2562                     codec->channel_layout = icodec->channel_layout;
2563                 }
2564                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2565                     codec->channel_layout = 0;
2566
2567                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2568                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2569                                             || codec->channel_layout != icodec->channel_layout;
2570                 icodec->request_channels  = codec->channels;
2571                 ost->resample_sample_fmt  = icodec->sample_fmt;
2572                 ost->resample_sample_rate = icodec->sample_rate;
2573                 ost->resample_channels    = icodec->channels;
2574                 break;
2575             case AVMEDIA_TYPE_VIDEO:
2576                 if (codec->pix_fmt == PIX_FMT_NONE)
2577                     codec->pix_fmt = icodec->pix_fmt;
2578                 choose_pixel_fmt(ost->st, ost->enc);
2579
2580                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2581                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2582                     exit_program(1);
2583                 }
2584
2585                 if (!codec->width || !codec->height) {
2586                     codec->width  = icodec->width;
2587                     codec->height = icodec->height;
2588                 }
2589
2590                 ost->video_resample = codec->width   != icodec->width  ||
2591                                       codec->height  != icodec->height ||
2592                                       codec->pix_fmt != icodec->pix_fmt;
2593                 if (ost->video_resample) {
2594                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2595                 }
2596
2597                 ost->resample_height  = icodec->height;
2598                 ost->resample_width   = icodec->width;
2599                 ost->resample_pix_fmt = icodec->pix_fmt;
2600
2601                 if (!ost->frame_rate.num)
2602                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
2603                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2604                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2605                     ost->frame_rate = ost->enc->supported_framerates[idx];
2606                 }
2607                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2608                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2609                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2610                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2611                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2612                 }
2613                 for (j = 0; j < ost->forced_kf_count; j++)
2614                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2615                                                          AV_TIME_BASE_Q,
2616                                                          codec->time_base);
2617
2618 #if CONFIG_AVFILTER
2619                 if (configure_video_filters(ist, ost)) {
2620                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2621                     exit(1);
2622                 }
2623 #endif
2624                 break;
2625             case AVMEDIA_TYPE_SUBTITLE:
2626                 break;
2627             default:
2628                 abort();
2629                 break;
2630             }
2631             /* two pass mode */
2632             if (codec->codec_id != CODEC_ID_H264 &&
2633                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2634                 char logfilename[1024];
2635                 FILE *f;
2636
2637                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2638                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2639                          i);
2640                 if (codec->flags & CODEC_FLAG_PASS2) {
2641                     char  *logbuffer;
2642                     size_t logbuffer_size;
2643                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2644                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2645                                logfilename);
2646                         exit_program(1);
2647                     }
2648                     codec->stats_in = logbuffer;
2649                 }
2650                 if (codec->flags & CODEC_FLAG_PASS1) {
2651                     f = fopen(logfilename, "wb");
2652                     if (!f) {
2653                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2654                                logfilename, strerror(errno));
2655                         exit_program(1);
2656                     }
2657                     ost->logfile = f;
2658                 }
2659             }
2660         }
2661         if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2662             /* maximum video buffer size is 8-bytes per pixel, plus DPX header size (1664)*/
2663             int size        = codec->width * codec->height;
2664             bit_buffer_size = FFMAX(bit_buffer_size, 9*size + 10000);
2665         }
2666     }
2667
2668     if (!bit_buffer)
2669         bit_buffer = av_malloc(bit_buffer_size);
2670     if (!bit_buffer) {
2671         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2672                bit_buffer_size);
2673         return AVERROR(ENOMEM);
2674     }
2675
2676     /* open each encoder */
2677     for (i = 0; i < nb_output_streams; i++) {
2678         ost = &output_streams[i];
2679         if (ost->encoding_needed) {
2680             AVCodec      *codec = ost->enc;
2681             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2682             if (!codec) {
2683                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2684                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2685                 ret = AVERROR(EINVAL);
2686                 goto dump_format;
2687             }
2688             if (dec->subtitle_header) {
2689                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2690                 if (!ost->st->codec->subtitle_header) {
2691                     ret = AVERROR(ENOMEM);
2692                     goto dump_format;
2693                 }
2694                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2695                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2696             }
2697             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2698                 av_dict_set(&ost->opts, "threads", "auto", 0);
2699             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2700                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2701                         ost->file_index, ost->index);
2702                 ret = AVERROR(EINVAL);
2703                 goto dump_format;
2704             }
2705             assert_codec_experimental(ost->st->codec, 1);
2706             assert_avoptions(ost->opts);
2707             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2708                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2709                                              " It takes bits/s as argument, not kbits/s\n");
2710             extra_size += ost->st->codec->extradata_size;
2711
2712             if (ost->st->codec->me_threshold)
2713                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2714         }
2715     }
2716
2717     /* init input streams */
2718     for (i = 0; i < nb_input_streams; i++)
2719         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2720             goto dump_format;
2721
2722     /* discard unused programs */
2723     for (i = 0; i < nb_input_files; i++) {
2724         InputFile *ifile = &input_files[i];
2725         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2726             AVProgram *p = ifile->ctx->programs[j];
2727             int discard  = AVDISCARD_ALL;
2728
2729             for (k = 0; k < p->nb_stream_indexes; k++)
2730                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2731                     discard = AVDISCARD_DEFAULT;
2732                     break;
2733                 }
2734             p->discard = discard;
2735         }
2736     }
2737
2738     /* open files and write file headers */
2739     for (i = 0; i < nb_output_files; i++) {
2740         oc = output_files[i].ctx;
2741         oc->interrupt_callback = int_cb;
2742         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2743             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2744             ret = AVERROR(EINVAL);
2745             goto dump_format;
2746         }
2747 //        assert_avoptions(output_files[i].opts);
2748         if (strcmp(oc->oformat->name, "rtp")) {
2749             want_sdp = 0;
2750         }
2751     }
2752
2753  dump_format:
2754     /* dump the file output parameters - cannot be done before in case
2755        of stream copy */
2756     for (i = 0; i < nb_output_files; i++) {
2757         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2758     }
2759
2760     /* dump the stream mapping */
2761     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2762     for (i = 0; i < nb_output_streams; i++) {
2763         ost = &output_streams[i];
2764
2765         if (ost->attachment_filename) {
2766             /* an attached file */
2767             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2768                    ost->attachment_filename, ost->file_index, ost->index);
2769             continue;
2770         }
2771         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2772                input_streams[ost->source_index].file_index,
2773                input_streams[ost->source_index].st->index,
2774                ost->file_index,
2775                ost->index);
2776         if (ost->audio_channels_mapped) {
2777             av_log(NULL, AV_LOG_INFO, " [ch:");
2778             for (j = 0; j < ost->audio_channels_mapped; j++)
2779                 if (ost->audio_channels_map[j] == -1)
2780                     av_log(NULL, AV_LOG_INFO, " M");
2781                 else
2782                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2783             av_log(NULL, AV_LOG_INFO, "]");
2784         }
2785         if (ost->sync_ist != &input_streams[ost->source_index])
2786             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2787                    ost->sync_ist->file_index,
2788                    ost->sync_ist->st->index);
2789         if (ost->stream_copy)
2790             av_log(NULL, AV_LOG_INFO, " (copy)");
2791         else
2792             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2793                    input_streams[ost->source_index].dec->name : "?",
2794                    ost->enc ? ost->enc->name : "?");
2795         av_log(NULL, AV_LOG_INFO, "\n");
2796     }
2797
2798     if (ret) {
2799         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2800         return ret;
2801     }
2802
2803     if (want_sdp) {
2804         print_sdp(output_files, nb_output_files);
2805     }
2806
2807     return 0;
2808 }
2809
2810 /*
2811  * The following code is the main loop of the file converter
2812  */
2813 static int transcode(OutputFile *output_files, int nb_output_files,
2814                      InputFile  *input_files,  int nb_input_files)
2815 {
2816     int ret, i;
2817     AVFormatContext *is, *os;
2818     OutputStream *ost;
2819     InputStream *ist;
2820     uint8_t *no_packet;
2821     int no_packet_count = 0;
2822     int64_t timer_start;
2823     int key;
2824
2825     if (!(no_packet = av_mallocz(nb_input_files)))
2826         exit_program(1);
2827
2828     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2829     if (ret < 0)
2830         goto fail;
2831
2832     if (!using_stdin) {
2833         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2834     }
2835
2836     timer_start = av_gettime();
2837
2838     for (; received_sigterm == 0;) {
2839         int file_index, ist_index;
2840         AVPacket pkt;
2841         int64_t ipts_min;
2842         double opts_min;
2843         int64_t cur_time= av_gettime();
2844
2845         ipts_min = INT64_MAX;
2846         opts_min = 1e100;
2847         /* if 'q' pressed, exits */
2848         if (!using_stdin) {
2849             static int64_t last_time;
2850             if (received_nb_signals)
2851                 break;
2852             /* read_key() returns 0 on EOF */
2853             if(cur_time - last_time >= 100000 && !run_as_daemon){
2854                 key =  read_key();
2855                 last_time = cur_time;
2856             }else
2857                 key = -1;
2858             if (key == 'q')
2859                 break;
2860             if (key == '+') av_log_set_level(av_log_get_level()+10);
2861             if (key == '-') av_log_set_level(av_log_get_level()-10);
2862             if (key == 's') qp_hist     ^= 1;
2863             if (key == 'h'){
2864                 if (do_hex_dump){
2865                     do_hex_dump = do_pkt_dump = 0;
2866                 } else if(do_pkt_dump){
2867                     do_hex_dump = 1;
2868                 } else
2869                     do_pkt_dump = 1;
2870                 av_log_set_level(AV_LOG_DEBUG);
2871             }
2872 #if CONFIG_AVFILTER
2873             if (key == 'c' || key == 'C'){
2874                 char buf[4096], target[64], command[256], arg[256] = {0};
2875                 double time;
2876                 int k, n = 0;
2877                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2878                 i = 0;
2879                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2880                     if (k > 0)
2881                         buf[i++] = k;
2882                 buf[i] = 0;
2883                 if (k > 0 &&
2884                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2885                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2886                            target, time, command, arg);
2887                     for (i = 0; i < nb_output_streams; i++) {
2888                         ost = &output_streams[i];
2889                         if (ost->graph) {
2890                             if (time < 0) {
2891                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2892                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2893                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2894                             } else {
2895                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2896                             }
2897                         }
2898                     }
2899                 } else {
2900                     av_log(NULL, AV_LOG_ERROR,
2901                            "Parse error, at least 3 arguments were expected, "
2902                            "only %d given in string '%s'\n", n, buf);
2903                 }
2904             }
2905 #endif
2906             if (key == 'd' || key == 'D'){
2907                 int debug=0;
2908                 if(key == 'D') {
2909                     debug = input_streams[0].st->codec->debug<<1;
2910                     if(!debug) debug = 1;
2911                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2912                         debug += debug;
2913                 }else
2914                     if(scanf("%d", &debug)!=1)
2915                         fprintf(stderr,"error parsing debug value\n");
2916                 for(i=0;i<nb_input_streams;i++) {
2917                     input_streams[i].st->codec->debug = debug;
2918                 }
2919                 for(i=0;i<nb_output_streams;i++) {
2920                     ost = &output_streams[i];
2921                     ost->st->codec->debug = debug;
2922                 }
2923                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2924                 fprintf(stderr,"debug=%d\n", debug);
2925             }
2926             if (key == '?'){
2927                 fprintf(stderr, "key    function\n"
2928                                 "?      show this help\n"
2929                                 "+      increase verbosity\n"
2930                                 "-      decrease verbosity\n"
2931                                 "c      Send command to filtergraph\n"
2932                                 "D      cycle through available debug modes\n"
2933                                 "h      dump packets/hex press to cycle through the 3 states\n"
2934                                 "q      quit\n"
2935                                 "s      Show QP histogram\n"
2936                 );
2937             }
2938         }
2939
2940         /* select the stream that we must read now by looking at the
2941            smallest output pts */
2942         file_index = -1;
2943         for (i = 0; i < nb_output_streams; i++) {
2944             OutputFile *of;
2945             int64_t ipts;
2946             double  opts;
2947             ost = &output_streams[i];
2948             of = &output_files[ost->file_index];
2949             os = output_files[ost->file_index].ctx;
2950             ist = &input_streams[ost->source_index];
2951             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2952                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2953                 continue;
2954             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2955             ipts = ist->pts;
2956             if (!input_files[ist->file_index].eof_reached) {
2957                 if (ipts < ipts_min) {
2958                     ipts_min = ipts;
2959                     if (input_sync)
2960                         file_index = ist->file_index;
2961                 }
2962                 if (opts < opts_min) {
2963                     opts_min = opts;
2964                     if (!input_sync) file_index = ist->file_index;
2965                 }
2966             }
2967             if (ost->frame_number >= ost->max_frames) {
2968                 int j;
2969                 for (j = 0; j < of->ctx->nb_streams; j++)
2970                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2971                 continue;
2972             }
2973         }
2974         /* if none, if is finished */
2975         if (file_index < 0) {
2976             if (no_packet_count) {
2977                 no_packet_count = 0;
2978                 memset(no_packet, 0, nb_input_files);
2979                 usleep(10000);
2980                 continue;
2981             }
2982             break;
2983         }
2984
2985         /* read a frame from it and output it in the fifo */
2986         is  = input_files[file_index].ctx;
2987         ret = av_read_frame(is, &pkt);
2988         if (ret == AVERROR(EAGAIN)) {
2989             no_packet[file_index] = 1;
2990             no_packet_count++;
2991             continue;
2992         }
2993         if (ret < 0) {
2994             input_files[file_index].eof_reached = 1;
2995             if (opt_shortest)
2996                 break;
2997             else
2998                 continue;
2999         }
3000
3001         no_packet_count = 0;
3002         memset(no_packet, 0, nb_input_files);
3003
3004         if (do_pkt_dump) {
3005             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3006                              is->streams[pkt.stream_index]);
3007         }
3008         /* the following test is needed in case new streams appear
3009            dynamically in stream : we ignore them */
3010         if (pkt.stream_index >= input_files[file_index].nb_streams)
3011             goto discard_packet;
3012         ist_index = input_files[file_index].ist_index + pkt.stream_index;
3013         ist = &input_streams[ist_index];
3014         if (ist->discard)
3015             goto discard_packet;
3016
3017         if (pkt.dts != AV_NOPTS_VALUE)
3018             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3019         if (pkt.pts != AV_NOPTS_VALUE)
3020             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3021
3022         if (pkt.pts != AV_NOPTS_VALUE)
3023             pkt.pts *= ist->ts_scale;
3024         if (pkt.dts != AV_NOPTS_VALUE)
3025             pkt.dts *= ist->ts_scale;
3026
3027         //fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n",
3028         //        ist->next_pts,
3029         //        pkt.dts, input_files[ist->file_index].ts_offset,
3030         //        ist->st->codec->codec_type);
3031         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
3032             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3033             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3034             int64_t delta   = pkt_dts - ist->next_pts;
3035             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3036                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3037                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3038                 pkt_dts+1<ist->pts)&& !copy_ts){
3039                 input_files[ist->file_index].ts_offset -= delta;
3040                 av_log(NULL, AV_LOG_DEBUG,
3041                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3042                        delta, input_files[ist->file_index].ts_offset);
3043                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3044                 if (pkt.pts != AV_NOPTS_VALUE)
3045                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3046             }
3047         }
3048
3049         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3050         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
3051
3052             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3053                    ist->file_index, ist->st->index);
3054             if (exit_on_error)
3055                 exit_program(1);
3056             av_free_packet(&pkt);
3057             continue;
3058         }
3059
3060     discard_packet:
3061         av_free_packet(&pkt);
3062
3063         /* dump report by using the output first video and audio streams */
3064         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
3065     }
3066
3067     /* at the end of stream, we must flush the decoder buffers */
3068     for (i = 0; i < nb_input_streams; i++) {
3069         ist = &input_streams[i];
3070         if (ist->decoding_needed) {
3071             output_packet(ist, output_streams, nb_output_streams, NULL);
3072         }
3073     }
3074     flush_encoders(output_streams, nb_output_streams);
3075
3076     term_exit();
3077
3078     /* write the trailer if needed and close file */
3079     for (i = 0; i < nb_output_files; i++) {
3080         os = output_files[i].ctx;
3081         av_write_trailer(os);
3082     }
3083
3084     /* dump report by using the first video and audio streams */
3085     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
3086
3087     /* close each encoder */
3088     for (i = 0; i < nb_output_streams; i++) {
3089         ost = &output_streams[i];
3090         if (ost->encoding_needed) {
3091             av_freep(&ost->st->codec->stats_in);
3092             avcodec_close(ost->st->codec);
3093         }
3094 #if CONFIG_AVFILTER
3095         avfilter_graph_free(&ost->graph);
3096 #endif
3097     }
3098
3099     /* close each decoder */
3100     for (i = 0; i < nb_input_streams; i++) {
3101         ist = &input_streams[i];
3102         if (ist->decoding_needed) {
3103             avcodec_close(ist->st->codec);
3104         }
3105     }
3106
3107     /* finished ! */
3108     ret = 0;
3109
3110  fail:
3111     av_freep(&bit_buffer);
3112     av_freep(&no_packet);
3113
3114     if (output_streams) {
3115         for (i = 0; i < nb_output_streams; i++) {
3116             ost = &output_streams[i];
3117             if (ost) {
3118                 if (ost->stream_copy)
3119                     av_freep(&ost->st->codec->extradata);
3120                 if (ost->logfile) {
3121                     fclose(ost->logfile);
3122                     ost->logfile = NULL;
3123                 }
3124                 av_fifo_free(ost->fifo); /* works even if fifo is not
3125                                              initialized but set to zero */
3126                 av_freep(&ost->st->codec->subtitle_header);
3127                 av_free(ost->resample_frame.data[0]);
3128                 av_free(ost->forced_kf_pts);
3129                 if (ost->video_resample)
3130                     sws_freeContext(ost->img_resample_ctx);
3131                 swr_free(&ost->swr);
3132                 av_dict_free(&ost->opts);
3133             }
3134         }
3135     }
3136     return ret;
3137 }
3138
3139 static int opt_frame_crop(const char *opt, const char *arg)
3140 {
3141     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3142     return AVERROR(EINVAL);
3143 }
3144
3145 static int opt_pad(const char *opt, const char *arg)
3146 {
3147     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3148     return -1;
3149 }
3150
3151 static double parse_frame_aspect_ratio(const char *arg)
3152 {
3153     int x = 0, y = 0;
3154     double ar = 0;
3155     const char *p;
3156     char *end;
3157
3158     p = strchr(arg, ':');
3159     if (p) {
3160         x = strtol(arg, &end, 10);
3161         if (end == p)
3162             y = strtol(end + 1, &end, 10);
3163         if (x > 0 && y > 0)
3164             ar = (double)x / (double)y;
3165     } else
3166         ar = strtod(arg, NULL);
3167
3168     if (!ar) {
3169         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
3170         exit_program(1);
3171     }
3172     return ar;
3173 }
3174
3175 static int opt_video_channel(const char *opt, const char *arg)
3176 {
3177     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3178     return opt_default("channel", arg);
3179 }
3180
3181 static int opt_video_standard(const char *opt, const char *arg)
3182 {
3183     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3184     return opt_default("standard", arg);
3185 }
3186
3187 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3188 {
3189     audio_codec_name = arg;
3190     return parse_option(o, "codec:a", arg, options);
3191 }
3192
3193 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3194 {
3195     video_codec_name = arg;
3196     return parse_option(o, "codec:v", arg, options);
3197 }
3198
3199 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3200 {
3201     subtitle_codec_name = arg;
3202     return parse_option(o, "codec:s", arg, options);
3203 }
3204
3205 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3206 {
3207     return parse_option(o, "codec:d", arg, options);
3208 }
3209
3210 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3211 {
3212     StreamMap *m = NULL;
3213     int i, negative = 0, file_idx;
3214     int sync_file_idx = -1, sync_stream_idx = 0;
3215     char *p, *sync;
3216     char *map;
3217
3218     if (*arg == '-') {
3219         negative = 1;
3220         arg++;
3221     }
3222     map = av_strdup(arg);
3223
3224     /* parse sync stream first, just pick first matching stream */
3225     if (sync = strchr(map, ',')) {
3226         *sync = 0;
3227         sync_file_idx = strtol(sync + 1, &sync, 0);
3228         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3229             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3230             exit_program(1);
3231         }
3232         if (*sync)
3233             sync++;
3234         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
3235             if (check_stream_specifier(input_files[sync_file_idx].ctx,
3236                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
3237                 sync_stream_idx = i;
3238                 break;
3239             }
3240         if (i == input_files[sync_file_idx].nb_streams) {
3241             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3242                                        "match any streams.\n", arg);
3243             exit_program(1);
3244         }
3245     }
3246
3247
3248     file_idx = strtol(map, &p, 0);
3249     if (file_idx >= nb_input_files || file_idx < 0) {
3250         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3251         exit_program(1);
3252     }
3253     if (negative)
3254         /* disable some already defined maps */
3255         for (i = 0; i < o->nb_stream_maps; i++) {
3256             m = &o->stream_maps[i];
3257             if (file_idx == m->file_index &&
3258                 check_stream_specifier(input_files[m->file_index].ctx,
3259                                        input_files[m->file_index].ctx->streams[m->stream_index],
3260                                        *p == ':' ? p + 1 : p) > 0)
3261                 m->disabled = 1;
3262         }
3263     else
3264         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3265             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3266                         *p == ':' ? p + 1 : p) <= 0)
3267                 continue;
3268             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3269                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3270             m = &o->stream_maps[o->nb_stream_maps - 1];
3271
3272             m->file_index   = file_idx;
3273             m->stream_index = i;
3274
3275             if (sync_file_idx >= 0) {
3276                 m->sync_file_index   = sync_file_idx;
3277                 m->sync_stream_index = sync_stream_idx;
3278             } else {
3279                 m->sync_file_index   = file_idx;
3280                 m->sync_stream_index = i;
3281             }
3282         }
3283
3284     if (!m) {
3285         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3286         exit_program(1);
3287     }
3288
3289     av_freep(&map);
3290     return 0;
3291 }
3292
3293 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3294 {
3295     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3296                                 &o->nb_attachments, o->nb_attachments + 1);
3297     o->attachments[o->nb_attachments - 1] = arg;
3298     return 0;
3299 }
3300
3301 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3302 {
3303     int n;
3304     AVStream *st;
3305     AudioChannelMap *m;
3306
3307     o->audio_channel_maps =
3308         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3309                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3310     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3311
3312     /* muted channel syntax */
3313     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3314     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3315         m->file_idx = m->stream_idx = -1;
3316         if (n == 1)
3317             m->ofile_idx = m->ostream_idx = -1;
3318         return 0;
3319     }
3320
3321     /* normal syntax */
3322     n = sscanf(arg, "%d.%d.%d:%d.%d",
3323                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3324                &m->ofile_idx, &m->ostream_idx);
3325
3326     if (n != 3 && n != 5) {
3327         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3328                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3329         exit_program(1);
3330     }
3331
3332     if (n != 5) // only file.stream.channel specified
3333         m->ofile_idx = m->ostream_idx = -1;
3334
3335     /* check input */
3336     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3337         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3338                m->file_idx);
3339         exit_program(1);
3340     }
3341     if (m->stream_idx < 0 ||
3342         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3343         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3344                m->file_idx, m->stream_idx);
3345         exit_program(1);
3346     }
3347     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3348     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3349         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3350                m->file_idx, m->stream_idx);
3351         exit_program(1);
3352     }
3353     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3354         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3355                m->file_idx, m->stream_idx, m->channel_idx);
3356         exit_program(1);
3357     }
3358     return 0;
3359 }
3360
3361 /**
3362  * Parse a metadata specifier in arg.
3363  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3364  * @param index for type c/p, chapter/program index is written here
3365  * @param stream_spec for type s, the stream specifier is written here
3366  */
3367 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3368 {
3369     if (*arg) {
3370         *type = *arg;
3371         switch (*arg) {
3372         case 'g':
3373             break;
3374         case 's':
3375             if (*(++arg) && *arg != ':') {
3376                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3377                 exit_program(1);
3378             }
3379             *stream_spec = *arg == ':' ? arg + 1 : "";
3380             break;
3381         case 'c':
3382         case 'p':
3383             if (*(++arg) == ':')
3384                 *index = strtol(++arg, NULL, 0);
3385             break;
3386         default:
3387             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3388             exit_program(1);
3389         }
3390     } else
3391         *type = 'g';
3392 }
3393
3394 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3395 {
3396     AVDictionary **meta_in = NULL;
3397     AVDictionary **meta_out = NULL;
3398     int i, ret = 0;
3399     char type_in, type_out;
3400     const char *istream_spec = NULL, *ostream_spec = NULL;
3401     int idx_in = 0, idx_out = 0;
3402
3403     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3404     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3405
3406     if (type_in == 'g' || type_out == 'g')
3407         o->metadata_global_manual = 1;
3408     if (type_in == 's' || type_out == 's')
3409         o->metadata_streams_manual = 1;
3410     if (type_in == 'c' || type_out == 'c')
3411         o->metadata_chapters_manual = 1;
3412
3413 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3414     if ((index) < 0 || (index) >= (nb_elems)) {\
3415         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3416                 (desc), (index));\
3417         exit_program(1);\
3418     }
3419
3420 #define SET_DICT(type, meta, context, index)\
3421         switch (type) {\
3422         case 'g':\
3423             meta = &context->metadata;\
3424             break;\
3425         case 'c':\
3426             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3427             meta = &context->chapters[index]->metadata;\
3428             break;\
3429         case 'p':\
3430             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3431             meta = &context->programs[index]->metadata;\
3432             break;\
3433         }\
3434
3435     SET_DICT(type_in, meta_in, ic, idx_in);
3436     SET_DICT(type_out, meta_out, oc, idx_out);
3437
3438     /* for input streams choose first matching stream */
3439     if (type_in == 's') {
3440         for (i = 0; i < ic->nb_streams; i++) {
3441             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3442                 meta_in = &ic->streams[i]->metadata;
3443                 break;
3444             } else if (ret < 0)
3445                 exit_program(1);
3446         }
3447         if (!meta_in) {
3448             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3449             exit_program(1);
3450         }
3451     }
3452
3453     if (type_out == 's') {
3454         for (i = 0; i < oc->nb_streams; i++) {
3455             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3456                 meta_out = &oc->streams[i]->metadata;
3457                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3458             } else if (ret < 0)
3459                 exit_program(1);
3460         }
3461     } else
3462         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3463
3464     return 0;
3465 }
3466
3467 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3468 {
3469     char buf[128];
3470     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3471     struct tm time = *gmtime((time_t*)&recording_timestamp);
3472     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3473     parse_option(o, "metadata", buf, options);
3474
3475     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3476                                  "tag instead.\n", opt);
3477     return 0;
3478 }
3479
3480 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3481 {
3482     const char *codec_string = encoder ? "encoder" : "decoder";
3483     AVCodec *codec;
3484
3485     codec = encoder ?
3486         avcodec_find_encoder_by_name(name) :
3487         avcodec_find_decoder_by_name(name);
3488     if (!codec) {
3489         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3490         exit_program(1);
3491     }
3492     if (codec->type != type) {
3493         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3494         exit_program(1);
3495     }
3496     return codec;
3497 }
3498
3499 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3500 {
3501     char *codec_name = NULL;
3502
3503     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3504     if (codec_name) {
3505         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3506         st->codec->codec_id = codec->id;
3507         return codec;
3508     } else
3509         return avcodec_find_decoder(st->codec->codec_id);
3510 }
3511
3512 /**
3513  * Add all the streams from the given input file to the global
3514  * list of input streams.
3515  */
3516 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3517 {
3518     int i;
3519     char *next, *codec_tag = NULL;
3520
3521     for (i = 0; i < ic->nb_streams; i++) {
3522         AVStream *st = ic->streams[i];
3523         AVCodecContext *dec = st->codec;
3524         InputStream *ist;
3525
3526         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3527         ist = &input_streams[nb_input_streams - 1];
3528         ist->st = st;
3529         ist->file_index = nb_input_files;
3530         ist->discard = 1;
3531         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3532
3533         ist->ts_scale = 1.0;
3534         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3535
3536         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3537         if (codec_tag) {
3538             uint32_t tag = strtol(codec_tag, &next, 0);
3539             if (*next)
3540                 tag = AV_RL32(codec_tag);
3541             st->codec->codec_tag = tag;
3542         }
3543
3544         ist->dec = choose_decoder(o, ic, st);
3545
3546         switch (dec->codec_type) {
3547         case AVMEDIA_TYPE_AUDIO:
3548             if (!ist->dec)
3549                 ist->dec = avcodec_find_decoder(dec->codec_id);
3550             if (o->audio_disable)
3551                 st->discard = AVDISCARD_ALL;
3552             break;
3553         case AVMEDIA_TYPE_VIDEO:
3554             if(!ist->dec)
3555                 ist->dec = avcodec_find_decoder(dec->codec_id);
3556             if (dec->lowres) {
3557                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3558             }
3559
3560             if (o->video_disable)
3561                 st->discard = AVDISCARD_ALL;
3562             else if (video_discard)
3563                 st->discard = video_discard;
3564             break;
3565         case AVMEDIA_TYPE_DATA:
3566             if (o->data_disable)
3567                 st->discard= AVDISCARD_ALL;
3568             break;
3569         case AVMEDIA_TYPE_SUBTITLE:
3570             if(!ist->dec)
3571                 ist->dec = avcodec_find_decoder(dec->codec_id);
3572             if(o->subtitle_disable)
3573                 st->discard = AVDISCARD_ALL;
3574             break;
3575         case AVMEDIA_TYPE_ATTACHMENT:
3576         case AVMEDIA_TYPE_UNKNOWN:
3577             break;
3578         default:
3579             abort();
3580         }
3581     }
3582 }
3583
3584 static void assert_file_overwrite(const char *filename)
3585 {
3586     if ((!file_overwrite || no_file_overwrite) &&
3587         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3588          av_strstart(filename, "file:", NULL))) {
3589         if (avio_check(filename, 0) == 0) {
3590             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3591                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3592                 fflush(stderr);
3593                 term_exit();
3594                 signal(SIGINT, SIG_DFL);
3595                 if (!read_yesno()) {
3596                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3597                     exit_program(1);
3598                 }
3599                 term_init();
3600             }
3601             else {
3602                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3603                 exit_program(1);
3604             }
3605         }
3606     }
3607 }
3608
3609 static void dump_attachment(AVStream *st, const char *filename)
3610 {
3611     int ret;
3612     AVIOContext *out = NULL;
3613     AVDictionaryEntry *e;
3614
3615     if (!st->codec->extradata_size) {
3616         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3617                nb_input_files - 1, st->index);
3618         return;
3619     }
3620     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3621         filename = e->value;
3622     if (!*filename) {
3623         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3624                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3625         exit_program(1);
3626     }
3627
3628     assert_file_overwrite(filename);
3629
3630     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3631         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3632                filename);
3633         exit_program(1);
3634     }
3635
3636     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3637     avio_flush(out);
3638     avio_close(out);
3639 }
3640
3641 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3642 {
3643     AVFormatContext *ic;
3644     AVInputFormat *file_iformat = NULL;
3645     int err, i, ret;
3646     int64_t timestamp;
3647     uint8_t buf[128];
3648     AVDictionary **opts;
3649     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3650
3651     if (o->format) {
3652         if (!(file_iformat = av_find_input_format(o->format))) {
3653             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3654             exit_program(1);
3655         }
3656     }
3657
3658     if (!strcmp(filename, "-"))
3659         filename = "pipe:";
3660