c71d860caa6c94cd0e89e94f7856aec800d7545a
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/dict.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/pixdesc.h"
48 #include "libavutil/avstring.h"
49 #include "libavutil/libm.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/timestamp.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 # include "libavfilter/avcodec.h"
58 # include "libavfilter/avfilter.h"
59 # include "libavfilter/avfiltergraph.h"
60 # include "libavfilter/buffersink.h"
61 # include "libavfilter/buffersrc.h"
62
63 #if HAVE_SYS_RESOURCE_H
64 #include <sys/types.h>
65 #include <sys/time.h>
66 #include <sys/resource.h>
67 #elif HAVE_GETPROCESSTIMES
68 #include <windows.h>
69 #endif
70 #if HAVE_GETPROCESSMEMORYINFO
71 #include <windows.h>
72 #include <psapi.h>
73 #endif
74
75 #if HAVE_SYS_SELECT_H
76 #include <sys/select.h>
77 #endif
78
79 #if HAVE_TERMIOS_H
80 #include <fcntl.h>
81 #include <sys/ioctl.h>
82 #include <sys/time.h>
83 #include <termios.h>
84 #elif HAVE_KBHIT
85 #include <conio.h>
86 #endif
87 #include <time.h>
88
89 #include "cmdutils.h"
90
91 #include "libavutil/avassert.h"
92
93 #define VSYNC_AUTO       -1
94 #define VSYNC_PASSTHROUGH 0
95 #define VSYNC_CFR         1
96 #define VSYNC_VFR         2
97 #define VSYNC_DROP        0xff
98
99 // #define SRCA
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179 } InputFilter;
180
181 typedef struct OutputFilter {
182     AVFilterContext     *filter;
183     struct OutputStream *ost;
184     struct FilterGraph  *graph;
185
186     /* temporary storage until stream maps are processed */
187     AVFilterInOut       *out_tmp;
188 } OutputFilter;
189
190 typedef struct FilterGraph {
191     int            index;
192     const char    *graph_desc;
193
194     AVFilterGraph *graph;
195
196     InputFilter   **inputs;
197     int          nb_inputs;
198     OutputFilter **outputs;
199     int         nb_outputs;
200 } FilterGraph;
201
202 typedef struct FrameBuffer {
203     uint8_t *base[4];
204     uint8_t *data[4];
205     int  linesize[4];
206
207     int h, w;
208     enum PixelFormat pix_fmt;
209
210     int refcount;
211     struct InputStream *ist;
212     struct FrameBuffer *next;
213 } FrameBuffer;
214
215 typedef struct InputStream {
216     int file_index;
217     AVStream *st;
218     int discard;             /* true if stream data should be discarded */
219     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
220     AVCodec *dec;
221     AVFrame *decoded_frame;
222
223     int64_t       start;     /* time when read started */
224     /* predicted dts of the next packet read for this stream or (when there are
225      * several frames in a packet) of the next frame in current packet */
226     int64_t       next_dts;
227     /* dts of the last packet read for this stream */
228     int64_t       dts;
229
230     int64_t       next_pts;  ///< synthetic pts for the next decode frame
231     int64_t       pts;       ///< current pts of the decoded frame
232     double ts_scale;
233     int is_start;            /* is 1 at the start and after a discontinuity */
234     int saw_first_ts;
235     int showed_multi_packet_warning;
236     AVDictionary *opts;
237
238     int resample_height;
239     int resample_width;
240     int resample_pix_fmt;
241
242     int      resample_sample_fmt;
243     int      resample_sample_rate;
244     int      resample_channels;
245     uint64_t resample_channel_layout;
246
247     /* a pool of free buffers for decoded data */
248     FrameBuffer *buffer_pool;
249     int dr1;
250
251     /* decoded data from this stream goes into all those filters
252      * currently video only */
253     InputFilter **filters;
254     int        nb_filters;
255 } InputStream;
256
257 typedef struct InputFile {
258     AVFormatContext *ctx;
259     int eof_reached;      /* true if eof reached */
260     int ist_index;        /* index of first stream in input_streams */
261     int buffer_size;      /* current total buffer size */
262     int64_t ts_offset;
263     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
264                              from ctx.nb_streams if new streams appear during av_read_frame() */
265     int rate_emu;
266 } InputFile;
267
268 typedef struct OutputStream {
269     int file_index;          /* file index */
270     int index;               /* stream index in the output file */
271     int source_index;        /* InputStream index */
272     AVStream *st;            /* stream in the output file */
273     int encoding_needed;     /* true if encoding needed for this stream */
274     int frame_number;
275     /* input pts and corresponding output pts
276        for A/V sync */
277     struct InputStream *sync_ist; /* input stream to sync against */
278     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
279     AVBitStreamFilterContext *bitstream_filters;
280     AVCodec *enc;
281     int64_t max_frames;
282     AVFrame *filtered_frame;
283
284     /* video only */
285     AVRational frame_rate;
286     int force_fps;
287     int top_field_first;
288
289     float frame_aspect_ratio;
290     float last_quality;
291
292     /* forced key frames */
293     int64_t *forced_kf_pts;
294     int forced_kf_count;
295     int forced_kf_index;
296
297     FILE *logfile;
298
299     OutputFilter *filter;
300     char *avfilter;
301
302     int64_t sws_flags;
303     int64_t swr_dither_method;
304     double swr_dither_scale;
305     AVDictionary *opts;
306     int is_past_recording_time;
307     int stream_copy;
308     const char *attachment_filename;
309     int copy_initial_nonkeyframes;
310
311     enum PixelFormat pix_fmts[2];
312     int keep_pix_fmt;
313 } OutputStream;
314
315
316 #if HAVE_TERMIOS_H
317
318 /* init terminal so that we can grab keys */
319 static struct termios oldtty;
320 static int restore_tty;
321 #endif
322
323 typedef struct OutputFile {
324     AVFormatContext *ctx;
325     AVDictionary *opts;
326     int ost_index;       /* index of the first stream in output_streams */
327     int64_t recording_time; /* desired length of the resulting file in microseconds */
328     int64_t start_time;     /* start time in microseconds */
329     uint64_t limit_filesize; /* filesize limit expressed in bytes */
330 } OutputFile;
331
332 static InputStream **input_streams = NULL;
333 static int        nb_input_streams = 0;
334 static InputFile   **input_files   = NULL;
335 static int        nb_input_files   = 0;
336
337 static OutputStream **output_streams = NULL;
338 static int         nb_output_streams = 0;
339 static OutputFile   **output_files   = NULL;
340 static int         nb_output_files   = 0;
341
342 static FilterGraph **filtergraphs;
343 int               nb_filtergraphs;
344
345 typedef struct OptionsContext {
346     /* input/output options */
347     int64_t start_time;
348     const char *format;
349
350     SpecifierOpt *codec_names;
351     int        nb_codec_names;
352     SpecifierOpt *audio_channels;
353     int        nb_audio_channels;
354     SpecifierOpt *audio_sample_rate;
355     int        nb_audio_sample_rate;
356     SpecifierOpt *frame_rates;
357     int        nb_frame_rates;
358     SpecifierOpt *frame_sizes;
359     int        nb_frame_sizes;
360     SpecifierOpt *frame_pix_fmts;
361     int        nb_frame_pix_fmts;
362
363     /* input options */
364     int64_t input_ts_offset;
365     int rate_emu;
366
367     SpecifierOpt *ts_scale;
368     int        nb_ts_scale;
369     SpecifierOpt *dump_attachment;
370     int        nb_dump_attachment;
371
372     /* output options */
373     StreamMap *stream_maps;
374     int     nb_stream_maps;
375     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
376     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
377     int metadata_global_manual;
378     int metadata_streams_manual;
379     int metadata_chapters_manual;
380     const char **attachments;
381     int       nb_attachments;
382
383     int chapters_input_file;
384
385     int64_t recording_time;
386     uint64_t limit_filesize;
387     float mux_preload;
388     float mux_max_delay;
389
390     int video_disable;
391     int audio_disable;
392     int subtitle_disable;
393     int data_disable;
394
395     /* indexed by output file stream index */
396     int   *streamid_map;
397     int nb_streamid_map;
398
399     SpecifierOpt *metadata;
400     int        nb_metadata;
401     SpecifierOpt *max_frames;
402     int        nb_max_frames;
403     SpecifierOpt *bitstream_filters;
404     int        nb_bitstream_filters;
405     SpecifierOpt *codec_tags;
406     int        nb_codec_tags;
407     SpecifierOpt *sample_fmts;
408     int        nb_sample_fmts;
409     SpecifierOpt *qscale;
410     int        nb_qscale;
411     SpecifierOpt *forced_key_frames;
412     int        nb_forced_key_frames;
413     SpecifierOpt *force_fps;
414     int        nb_force_fps;
415     SpecifierOpt *frame_aspect_ratios;
416     int        nb_frame_aspect_ratios;
417     SpecifierOpt *rc_overrides;
418     int        nb_rc_overrides;
419     SpecifierOpt *intra_matrices;
420     int        nb_intra_matrices;
421     SpecifierOpt *inter_matrices;
422     int        nb_inter_matrices;
423     SpecifierOpt *top_field_first;
424     int        nb_top_field_first;
425     SpecifierOpt *metadata_map;
426     int        nb_metadata_map;
427     SpecifierOpt *presets;
428     int        nb_presets;
429     SpecifierOpt *copy_initial_nonkeyframes;
430     int        nb_copy_initial_nonkeyframes;
431     SpecifierOpt *filters;
432     int        nb_filters;
433 } OptionsContext;
434
435 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
436 {\
437     int i, ret;\
438     for (i = 0; i < o->nb_ ## name; i++) {\
439         char *spec = o->name[i].specifier;\
440         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
441             outvar = o->name[i].u.type;\
442         else if (ret < 0)\
443             exit_program(1);\
444     }\
445 }
446
447 static int64_t getutime(void)
448 {
449 #if HAVE_GETRUSAGE
450     struct rusage rusage;
451
452     getrusage(RUSAGE_SELF, &rusage);
453     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
454 #elif HAVE_GETPROCESSTIMES
455     HANDLE proc;
456     FILETIME c, e, k, u;
457     proc = GetCurrentProcess();
458     GetProcessTimes(proc, &c, &e, &k, &u);
459     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
460 #else
461     return av_gettime();
462 #endif
463 }
464
465 static void update_benchmark(const char *fmt, ...)
466 {
467     if (do_benchmark_all) {
468         int64_t t = getutime();
469         va_list va;
470         char buf[1024];
471
472         if (fmt) {
473             va_start(va, fmt);
474             vsnprintf(buf, sizeof(buf), fmt, va);
475             va_end(va);
476             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
477         }
478         current_time = t;
479     }
480 }
481
482 static void reset_options(OptionsContext *o, int is_input)
483 {
484     const OptionDef *po = options;
485     OptionsContext bak= *o;
486     int i;
487
488     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
489     while (po->name) {
490         void *dst = (uint8_t*)o + po->u.off;
491
492         if (po->flags & OPT_SPEC) {
493             SpecifierOpt **so = dst;
494             int i, *count = (int*)(so + 1);
495             for (i = 0; i < *count; i++) {
496                 av_freep(&(*so)[i].specifier);
497                 if (po->flags & OPT_STRING)
498                     av_freep(&(*so)[i].u.str);
499             }
500             av_freep(so);
501             *count = 0;
502         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
503             av_freep(dst);
504         po++;
505     }
506
507     for (i = 0; i < o->nb_stream_maps; i++)
508         av_freep(&o->stream_maps[i].linklabel);
509     av_freep(&o->stream_maps);
510     av_freep(&o->audio_channel_maps);
511     av_freep(&o->streamid_map);
512
513     memset(o, 0, sizeof(*o));
514
515     if(is_input) o->recording_time = bak.recording_time;
516     else         o->recording_time = INT64_MAX;
517     o->mux_max_delay  = 0.7;
518     o->limit_filesize = UINT64_MAX;
519     o->chapters_input_file = INT_MAX;
520
521     uninit_opts();
522     init_opts();
523 }
524
525 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
526 {
527     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
528     int i, ret;
529     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
530     int h_chroma_shift, v_chroma_shift;
531     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
532     int w = s->width, h = s->height;
533
534     if (!buf)
535         return AVERROR(ENOMEM);
536
537     avcodec_align_dimensions(s, &w, &h);
538
539     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
540         w += 2*edge;
541         h += 2*edge;
542     }
543
544     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
545                               s->pix_fmt, 32)) < 0) {
546         av_freep(&buf);
547         return ret;
548     }
549     /* XXX this shouldn't be needed, but some tests break without this line
550      * those decoders are buggy and need to be fixed.
551      * the following tests fail:
552      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
553      */
554     memset(buf->base[0], 128, ret);
555
556     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
557     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
558         const int h_shift = i==0 ? 0 : h_chroma_shift;
559         const int v_shift = i==0 ? 0 : v_chroma_shift;
560         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
561             buf->data[i] = buf->base[i];
562         else
563             buf->data[i] = buf->base[i] +
564                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
565                                    (pixel_size*edge >> h_shift), 32);
566     }
567     buf->w       = s->width;
568     buf->h       = s->height;
569     buf->pix_fmt = s->pix_fmt;
570     buf->ist     = ist;
571
572     *pbuf = buf;
573     return 0;
574 }
575
576 static void free_buffer_pool(InputStream *ist)
577 {
578     FrameBuffer *buf = ist->buffer_pool;
579     while (buf) {
580         ist->buffer_pool = buf->next;
581         av_freep(&buf->base[0]);
582         av_free(buf);
583         buf = ist->buffer_pool;
584     }
585 }
586
587 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
588 {
589     av_assert0(buf->refcount > 0);
590     buf->refcount--;
591     if (!buf->refcount) {
592         FrameBuffer *tmp;
593         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
594             av_assert1(tmp != buf);
595         buf->next = ist->buffer_pool;
596         ist->buffer_pool = buf;
597     }
598 }
599
600 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
601 {
602     InputStream *ist = s->opaque;
603     FrameBuffer *buf;
604     int ret, i;
605
606     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
607         return -1;
608
609     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
610         return ret;
611
612     buf              = ist->buffer_pool;
613     ist->buffer_pool = buf->next;
614     buf->next        = NULL;
615     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
616         av_freep(&buf->base[0]);
617         av_free(buf);
618         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
619             return ret;
620     }
621     av_assert0(!buf->refcount);
622     buf->refcount++;
623
624     frame->opaque        = buf;
625     frame->type          = FF_BUFFER_TYPE_USER;
626     frame->extended_data = frame->data;
627     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
628     frame->width         = buf->w;
629     frame->height        = buf->h;
630     frame->format        = buf->pix_fmt;
631     frame->sample_aspect_ratio = s->sample_aspect_ratio;
632
633     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
634         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
635         frame->data[i]     = buf->data[i];
636         frame->linesize[i] = buf->linesize[i];
637     }
638
639     return 0;
640 }
641
642 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
643 {
644     InputStream *ist = s->opaque;
645     FrameBuffer *buf = frame->opaque;
646     int i;
647
648     if(frame->type!=FF_BUFFER_TYPE_USER)
649         return avcodec_default_release_buffer(s, frame);
650
651     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
652         frame->data[i] = NULL;
653
654     unref_buffer(ist, buf);
655 }
656
657 static void filter_release_buffer(AVFilterBuffer *fb)
658 {
659     FrameBuffer *buf = fb->priv;
660     av_free(fb);
661     unref_buffer(buf->ist, buf);
662 }
663
664 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
665 {
666     if (codec && codec->pix_fmts) {
667         const enum PixelFormat *p = codec->pix_fmts;
668         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
669         enum PixelFormat best= PIX_FMT_NONE;
670         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
671             if (st->codec->codec_id == CODEC_ID_MJPEG) {
672                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
673             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
674                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
675                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
676             }
677         }
678         for (; *p != PIX_FMT_NONE; p++) {
679             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
680             if (*p == target)
681                 break;
682         }
683         if (*p == PIX_FMT_NONE) {
684             if (target != PIX_FMT_NONE)
685                 av_log(NULL, AV_LOG_WARNING,
686                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
687                        av_pix_fmt_descriptors[target].name,
688                        codec->name,
689                        av_pix_fmt_descriptors[best].name);
690             return best;
691         }
692     }
693     return target;
694 }
695
696 static char *choose_pix_fmts(OutputStream *ost)
697 {
698      if (ost->keep_pix_fmt) {
699         if (ost->filter)
700             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
701                                             AVFILTER_AUTO_CONVERT_NONE);
702         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
703             return NULL;
704         ost->pix_fmts[0] = ost->st->codec->pix_fmt;
705         return ost->pix_fmts;
706     }
707     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
708         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
709     } else if (ost->enc->pix_fmts) {
710         const enum PixelFormat *p;
711         AVIOContext *s = NULL;
712         uint8_t *ret;
713         int len;
714
715         if (avio_open_dyn_buf(&s) < 0)
716             exit_program(1);
717
718         p = ost->enc->pix_fmts;
719         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
720             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
721                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
722             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
724                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
725             }
726         }
727
728         for (; *p != PIX_FMT_NONE; p++) {
729             const char *name = av_get_pix_fmt_name(*p);
730             avio_printf(s, "%s:", name);
731         }
732         len = avio_close_dyn_buf(s, &ret);
733         ret[len - 1] = 0;
734         return ret;
735     } else
736         return NULL;
737 }
738
739 /**
740  * Define a function for building a string containing a list of
741  * allowed formats,
742  */
743 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
744 static char *choose_ ## var ## s(OutputStream *ost)                             \
745 {                                                                               \
746     if (ost->st->codec->var != none) {                                          \
747         get_name(ost->st->codec->var);                                          \
748         return av_strdup(name);                                                 \
749     } else if (ost->enc->supported_list) {                                      \
750         const type *p;                                                          \
751         AVIOContext *s = NULL;                                                  \
752         uint8_t *ret;                                                           \
753         int len;                                                                \
754                                                                                 \
755         if (avio_open_dyn_buf(&s) < 0)                                          \
756             exit_program(1);                                                    \
757                                                                                 \
758         for (p = ost->enc->supported_list; *p != none; p++) {                   \
759             get_name(*p);                                                       \
760             avio_printf(s, "%s" separator, name);                               \
761         }                                                                       \
762         len = avio_close_dyn_buf(s, &ret);                                      \
763         ret[len - 1] = 0;                                                       \
764         return ret;                                                             \
765     } else                                                                      \
766         return NULL;                                                            \
767 }
768
769 #define GET_PIX_FMT_NAME(pix_fmt)\
770     const char *name = av_get_pix_fmt_name(pix_fmt);
771
772 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
773 //                   GET_PIX_FMT_NAME, ":")
774
775 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
776     const char *name = av_get_sample_fmt_name(sample_fmt)
777
778 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
779                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
780
781 #define GET_SAMPLE_RATE_NAME(rate)\
782     char name[16];\
783     snprintf(name, sizeof(name), "%d", rate);
784
785 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
786                   GET_SAMPLE_RATE_NAME, ",")
787
788 #define GET_CH_LAYOUT_NAME(ch_layout)\
789     char name[16];\
790     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
791
792 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
793                   GET_CH_LAYOUT_NAME, ",")
794
795 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
796                                    AVFilterContext **out_filter)
797 {
798     InputStream  *ist = fg->inputs[0]->ist;
799     OutputStream *ost = fg->outputs[0]->ost;
800     AVCodecContext *codec  = ost->st->codec;
801     AVCodecContext *icodec = ist->st->codec;
802     char *sample_fmts, *sample_rates, *channel_layouts;
803     char args[256];
804     int ret;
805
806     avfilter_graph_free(&fg->graph);
807     if (!(fg->graph = avfilter_graph_alloc()))
808         return AVERROR(ENOMEM);
809
810 #ifdef SRCA
811     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
812              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
813 #else
814     snprintf(args, sizeof(args), "%d/%d:%d:%s:"
815              "0x%"PRIx64, ist->st->time_base.num,
816 #endif
817              ist->st->time_base.den, icodec->sample_rate,
818              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
819     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
820                                        avfilter_get_by_name("abuffer"),
821                                        "src", args, NULL, fg->graph);
822     if (ret < 0)
823         return ret;
824
825     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
826                                        avfilter_get_by_name("abuffersink_old"),
827                                        "out", NULL, NULL, fg->graph);
828     if (ret < 0)
829         return ret;
830
831     *in_filter  = fg->inputs[0]->filter;
832     *out_filter = fg->outputs[0]->filter;
833
834     if (codec->channels && !codec->channel_layout)
835         codec->channel_layout = av_get_default_channel_layout(codec->channels);
836
837     sample_fmts     = choose_sample_fmts(ost);
838     sample_rates    = choose_sample_rates(ost);
839     channel_layouts = choose_channel_layouts(ost);
840     if (sample_fmts || sample_rates || channel_layouts) {
841         AVFilterContext *format;
842         char args[256];
843         int len = 0;
844
845         if (sample_fmts)
846             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
847                             sample_fmts);
848         if (sample_rates)
849             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
850                             sample_rates);
851         if (channel_layouts)
852             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
853                             channel_layouts);
854         args[len - 1] = 0;
855
856         av_freep(&sample_fmts);
857         av_freep(&sample_rates);
858         av_freep(&channel_layouts);
859
860         ret = avfilter_graph_create_filter(&format,
861                                            avfilter_get_by_name("aformat"),
862                                            "aformat", args, NULL, fg->graph);
863         if (ret < 0)
864             return ret;
865
866         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
867         if (ret < 0)
868             return ret;
869
870         *out_filter = format;
871     }
872
873     return 0;
874 }
875
876 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
877                                    AVFilterContext **out_filter)
878 {
879     InputStream  *ist = fg->inputs[0]->ist;
880     OutputStream *ost = fg->outputs[0]->ost;
881     AVFilterContext *filter;
882     AVCodecContext *codec = ost->st->codec;
883     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
884     char *pix_fmts;
885     AVRational sample_aspect_ratio;
886     char args[255];
887     int ret;
888
889     if (ist->st->sample_aspect_ratio.num) {
890         sample_aspect_ratio = ist->st->sample_aspect_ratio;
891     } else
892         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
893
894     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
895              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
896              sample_aspect_ratio.num, sample_aspect_ratio.den, SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
897
898     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
899                                        avfilter_get_by_name("buffer"),
900                                        "src", args, NULL, fg->graph);
901     if (ret < 0)
902         return ret;
903
904 #if FF_API_OLD_VSINK_API
905     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
906                                        avfilter_get_by_name("buffersink"),
907                                        "out", NULL, NULL, fg->graph);
908 #else
909     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
910                                        avfilter_get_by_name("buffersink"),
911                                        "out", NULL, buffersink_params, fg->graph);
912 #endif
913     av_freep(&buffersink_params);
914
915     if (ret < 0)
916         return ret;
917     *in_filter  = fg->inputs[0]->filter;
918     *out_filter = fg->outputs[0]->filter;
919
920     if (codec->width || codec->height) {
921         snprintf(args, 255, "%d:%d:flags=0x%X",
922                  codec->width,
923                  codec->height,
924                  (unsigned)ost->sws_flags);
925         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
926                                                 NULL, args, NULL, fg->graph)) < 0)
927             return ret;
928         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
929             return ret;
930         *in_filter = filter;
931     }
932
933     if ((pix_fmts = choose_pix_fmts(ost))) {
934         if ((ret = avfilter_graph_create_filter(&filter,
935                                                 avfilter_get_by_name("format"),
936                                                 "format", pix_fmts, NULL,
937                                                 fg->graph)) < 0)
938             return ret;
939         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
940             return ret;
941
942         *out_filter = filter;
943         av_freep(&pix_fmts);
944     }
945
946     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
947     fg->graph->scale_sws_opts = av_strdup(args);
948
949     return 0;
950 }
951
952 static int configure_simple_filtergraph(FilterGraph *fg)
953 {
954     OutputStream *ost = fg->outputs[0]->ost;
955     AVFilterContext *in_filter, *out_filter;
956     int ret;
957
958     avfilter_graph_free(&fg->graph);
959     fg->graph = avfilter_graph_alloc();
960     if (!fg->graph)
961         return AVERROR(ENOMEM);
962
963     switch (ost->st->codec->codec_type) {
964     case AVMEDIA_TYPE_VIDEO:
965         ret = configure_video_filters(fg, &in_filter, &out_filter);
966         break;
967     case AVMEDIA_TYPE_AUDIO:
968         ret = configure_audio_filters(fg, &in_filter, &out_filter);
969         break;
970     default: av_assert0(0);
971     }
972     if (ret < 0)
973         return ret;
974
975     if (ost->avfilter) {
976         AVFilterInOut *outputs = avfilter_inout_alloc();
977         AVFilterInOut *inputs  = avfilter_inout_alloc();
978
979         outputs->name    = av_strdup("in");
980         outputs->filter_ctx = in_filter;
981         outputs->pad_idx = 0;
982         outputs->next    = NULL;
983
984         inputs->name    = av_strdup("out");
985         inputs->filter_ctx = out_filter;
986         inputs->pad_idx = 0;
987         inputs->next    = NULL;
988
989         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
990             return ret;
991         av_freep(&ost->avfilter);
992     } else {
993         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
994             return ret;
995     }
996
997     if (ost->keep_pix_fmt)
998         avfilter_graph_set_auto_convert(fg->graph,
999                                         AVFILTER_AUTO_CONVERT_NONE);
1000
1001     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1002         return ret;
1003
1004     ost->filter = fg->outputs[0];
1005
1006     return 0;
1007 }
1008
1009 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1010 {
1011     FilterGraph *fg = av_mallocz(sizeof(*fg));
1012
1013     if (!fg)
1014         exit_program(1);
1015     fg->index = nb_filtergraphs;
1016
1017     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1018                              fg->nb_outputs + 1);
1019     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1020         exit_program(1);
1021     fg->outputs[0]->ost   = ost;
1022     fg->outputs[0]->graph = fg;
1023
1024     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1025                             fg->nb_inputs + 1);
1026     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1027         exit_program(1);
1028     fg->inputs[0]->ist   = ist;
1029     fg->inputs[0]->graph = fg;
1030
1031     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1032                               &ist->nb_filters, ist->nb_filters + 1);
1033     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1034
1035     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1036                               &nb_filtergraphs, nb_filtergraphs + 1);
1037     filtergraphs[nb_filtergraphs - 1] = fg;
1038
1039     return fg;
1040 }
1041
1042 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1043 {
1044     InputStream *ist = NULL;
1045     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1046     int i;
1047
1048     // TODO: support other filter types
1049     if (type != AVMEDIA_TYPE_VIDEO) {
1050         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
1051         exit_program(1);
1052     }
1053
1054     if (in->name) {
1055         AVFormatContext *s;
1056         AVStream       *st = NULL;
1057         char *p;
1058         int file_idx = strtol(in->name, &p, 0);
1059
1060         if (file_idx < 0 || file_idx >= nb_input_files) {
1061             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1062                    file_idx, fg->graph_desc);
1063             exit_program(1);
1064         }
1065         s = input_files[file_idx]->ctx;
1066
1067         for (i = 0; i < s->nb_streams; i++) {
1068             if (s->streams[i]->codec->codec_type != type)
1069                 continue;
1070             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1071                 st = s->streams[i];
1072                 break;
1073             }
1074         }
1075         if (!st) {
1076             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1077                    "matches no streams.\n", p, fg->graph_desc);
1078             exit_program(1);
1079         }
1080         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1081     } else {
1082         /* find the first unused stream of corresponding type */
1083         for (i = 0; i < nb_input_streams; i++) {
1084             ist = input_streams[i];
1085             if (ist->st->codec->codec_type == type && ist->discard)
1086                 break;
1087         }
1088         if (i == nb_input_streams) {
1089             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1090                    "unlabeled input pad %d on filter %s", in->pad_idx,
1091                    in->filter_ctx->name);
1092             exit_program(1);
1093         }
1094     }
1095     ist->discard         = 0;
1096     ist->decoding_needed = 1;
1097     ist->st->discard = AVDISCARD_NONE;
1098
1099     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1100                             &fg->nb_inputs, fg->nb_inputs + 1);
1101     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1102         exit_program(1);
1103     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1104     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1105
1106     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1107                               &ist->nb_filters, ist->nb_filters + 1);
1108     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1109 }
1110
1111 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1112 {
1113     char *pix_fmts;
1114     AVCodecContext *codec = ofilter->ost->st->codec;
1115     AVFilterContext *last_filter = out->filter_ctx;
1116     int pad_idx = out->pad_idx;
1117     int ret;
1118     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1119
1120 #if FF_API_OLD_VSINK_API
1121     ret = avfilter_graph_create_filter(&ofilter->filter,
1122                                        avfilter_get_by_name("buffersink"),
1123                                        "out", NULL, NULL, fg->graph);
1124 #else
1125     ret = avfilter_graph_create_filter(&ofilter->filter,
1126                                        avfilter_get_by_name("buffersink"),
1127                                        "out", NULL, buffersink_params, fg->graph);
1128 #endif
1129     av_freep(&buffersink_params);
1130
1131     if (ret < 0)
1132         return ret;
1133
1134     if (codec->width || codec->height) {
1135         char args[255];
1136         AVFilterContext *filter;
1137
1138         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1139                  codec->width,
1140                  codec->height,
1141                  (unsigned)ofilter->ost->sws_flags);
1142         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1143                                                 NULL, args, NULL, fg->graph)) < 0)
1144             return ret;
1145         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1146             return ret;
1147
1148         last_filter = filter;
1149         pad_idx = 0;
1150     }
1151
1152     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1153         AVFilterContext *filter;
1154         if ((ret = avfilter_graph_create_filter(&filter,
1155                                                 avfilter_get_by_name("format"),
1156                                                 "format", pix_fmts, NULL,
1157                                                 fg->graph)) < 0)
1158             return ret;
1159         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1160             return ret;
1161
1162         last_filter = filter;
1163         pad_idx     = 0;
1164         av_freep(&pix_fmts);
1165     }
1166
1167     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1168         return ret;
1169
1170     return 0;
1171 }
1172
1173 static int configure_complex_filter(FilterGraph *fg)
1174 {
1175     AVFilterInOut *inputs, *outputs, *cur;
1176     int ret, i, init = !fg->graph;
1177
1178     avfilter_graph_free(&fg->graph);
1179     if (!(fg->graph = avfilter_graph_alloc()))
1180         return AVERROR(ENOMEM);
1181
1182     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1183         return ret;
1184
1185     for (cur = inputs; init && cur; cur = cur->next)
1186         init_input_filter(fg, cur);
1187
1188     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1189         InputFilter *ifilter = fg->inputs[i];
1190         InputStream     *ist = ifilter->ist;
1191         AVRational       sar;
1192         char            args[255];
1193
1194         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1195                                                  ist->st->codec->sample_aspect_ratio;
1196         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1197                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1198                  sar.num, sar.den);
1199
1200         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1201                                                 avfilter_get_by_name("buffer"), cur->name,
1202                                                 args, NULL, fg->graph)) < 0)
1203             return ret;
1204         if ((ret = avfilter_link(ifilter->filter, 0,
1205                                  cur->filter_ctx, cur->pad_idx)) < 0)
1206             return ret;
1207     }
1208     avfilter_inout_free(&inputs);
1209
1210     if (!init) {
1211         /* we already know the mappings between lavfi outputs and output streams,
1212          * so we can finish the setup */
1213         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1214             configure_output_filter(fg, fg->outputs[i], cur);
1215         avfilter_inout_free(&outputs);
1216
1217         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1218             return ret;
1219     } else {
1220         /* wait until output mappings are processed */
1221         for (cur = outputs; cur;) {
1222             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1223                                      &fg->nb_outputs, fg->nb_outputs + 1);
1224             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1225                 exit_program(1);
1226             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1227             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1228             cur = cur->next;
1229             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1230         }
1231     }
1232
1233     return 0;
1234 }
1235
1236 static int configure_complex_filters(void)
1237 {
1238     int i, ret = 0;
1239
1240     for (i = 0; i < nb_filtergraphs; i++)
1241         if (!filtergraphs[i]->graph &&
1242             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1243             return ret;
1244     return 0;
1245 }
1246
1247 static int configure_filtergraph(FilterGraph *fg)
1248 {
1249     return fg->graph_desc ? configure_complex_filter(fg) :
1250                             configure_simple_filtergraph(fg);
1251 }
1252
1253 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1254 {
1255     int i;
1256     for (i = 0; i < fg->nb_inputs; i++)
1257         if (fg->inputs[i]->ist == ist)
1258             return 1;
1259     return 0;
1260 }
1261
1262 static void term_exit(void)
1263 {
1264     av_log(NULL, AV_LOG_QUIET, "%s", "");
1265 #if HAVE_TERMIOS_H
1266     if(restore_tty)
1267         tcsetattr (0, TCSANOW, &oldtty);
1268 #endif
1269 }
1270
1271 static volatile int received_sigterm = 0;
1272
1273 static void sigterm_handler(int sig)
1274 {
1275     received_sigterm = sig;
1276     received_nb_signals++;
1277     term_exit();
1278     if(received_nb_signals > 3)
1279         exit(123);
1280 }
1281
1282 static void term_init(void)
1283 {
1284 #if HAVE_TERMIOS_H
1285     if(!run_as_daemon){
1286         struct termios tty;
1287
1288         if (tcgetattr (0, &tty) == 0) {
1289             oldtty = tty;
1290             restore_tty = 1;
1291             atexit(term_exit);
1292
1293             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1294                              |INLCR|IGNCR|ICRNL|IXON);
1295             tty.c_oflag |= OPOST;
1296             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1297             tty.c_cflag &= ~(CSIZE|PARENB);
1298             tty.c_cflag |= CS8;
1299             tty.c_cc[VMIN] = 1;
1300             tty.c_cc[VTIME] = 0;
1301
1302             tcsetattr (0, TCSANOW, &tty);
1303         }
1304         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1305     }
1306 #endif
1307     avformat_network_deinit();
1308
1309     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1310     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1311 #ifdef SIGXCPU
1312     signal(SIGXCPU, sigterm_handler);
1313 #endif
1314 }
1315
1316 /* read a key without blocking */
1317 static int read_key(void)
1318 {
1319     unsigned char ch;
1320 #if HAVE_TERMIOS_H
1321     int n = 1;
1322     struct timeval tv;
1323     fd_set rfds;
1324
1325     FD_ZERO(&rfds);
1326     FD_SET(0, &rfds);
1327     tv.tv_sec = 0;
1328     tv.tv_usec = 0;
1329     n = select(1, &rfds, NULL, NULL, &tv);
1330     if (n > 0) {
1331         n = read(0, &ch, 1);
1332         if (n == 1)
1333             return ch;
1334
1335         return n;
1336     }
1337 #elif HAVE_KBHIT
1338 #    if HAVE_PEEKNAMEDPIPE
1339     static int is_pipe;
1340     static HANDLE input_handle;
1341     DWORD dw, nchars;
1342     if(!input_handle){
1343         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1344         is_pipe = !GetConsoleMode(input_handle, &dw);
1345     }
1346
1347     if (stdin->_cnt > 0) {
1348         read(0, &ch, 1);
1349         return ch;
1350     }
1351     if (is_pipe) {
1352         /* When running under a GUI, you will end here. */
1353         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1354             return -1;
1355         //Read it
1356         if(nchars != 0) {
1357             read(0, &ch, 1);
1358             return ch;
1359         }else{
1360             return -1;
1361         }
1362     }
1363 #    endif
1364     if(kbhit())
1365         return(getch());
1366 #endif
1367     return -1;
1368 }
1369
1370 static int decode_interrupt_cb(void *ctx)
1371 {
1372     return received_nb_signals > 1;
1373 }
1374
1375 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1376
1377 void av_noreturn exit_program(int ret)
1378 {
1379     int i, j;
1380
1381     for (i = 0; i < nb_filtergraphs; i++) {
1382         avfilter_graph_free(&filtergraphs[i]->graph);
1383         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1384             av_freep(&filtergraphs[i]->inputs[j]);
1385         av_freep(&filtergraphs[i]->inputs);
1386         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1387             av_freep(&filtergraphs[i]->outputs[j]);
1388         av_freep(&filtergraphs[i]->outputs);
1389         av_freep(&filtergraphs[i]);
1390     }
1391     av_freep(&filtergraphs);
1392
1393     /* close files */
1394     for (i = 0; i < nb_output_files; i++) {
1395         AVFormatContext *s = output_files[i]->ctx;
1396         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1397             avio_close(s->pb);
1398         avformat_free_context(s);
1399         av_dict_free(&output_files[i]->opts);
1400         av_freep(&output_files[i]);
1401     }
1402     for (i = 0; i < nb_output_streams; i++) {
1403         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1404         while (bsfc) {
1405             AVBitStreamFilterContext *next = bsfc->next;
1406             av_bitstream_filter_close(bsfc);
1407             bsfc = next;
1408         }
1409         output_streams[i]->bitstream_filters = NULL;
1410
1411         av_freep(&output_streams[i]->filtered_frame);
1412         av_freep(&output_streams[i]);
1413     }
1414     for (i = 0; i < nb_input_files; i++) {
1415         avformat_close_input(&input_files[i]->ctx);
1416         av_freep(&input_files[i]);
1417     }
1418     for (i = 0; i < nb_input_streams; i++) {
1419         av_freep(&input_streams[i]->decoded_frame);
1420         av_dict_free(&input_streams[i]->opts);
1421         free_buffer_pool(input_streams[i]);
1422         av_freep(&input_streams[i]->filters);
1423         av_freep(&input_streams[i]);
1424     }
1425
1426     if (vstats_file)
1427         fclose(vstats_file);
1428     av_free(vstats_filename);
1429
1430     av_freep(&input_streams);
1431     av_freep(&input_files);
1432     av_freep(&output_streams);
1433     av_freep(&output_files);
1434
1435     uninit_opts();
1436
1437     avfilter_uninit();
1438     avformat_network_deinit();
1439
1440     if (received_sigterm) {
1441         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1442                (int) received_sigterm);
1443         exit (255);
1444     }
1445
1446     exit(ret); /* not all OS-es handle main() return value */
1447 }
1448
1449 static void assert_avoptions(AVDictionary *m)
1450 {
1451     AVDictionaryEntry *t;
1452     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1453         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1454         exit_program(1);
1455     }
1456 }
1457
1458 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1459 {
1460     const char *codec_string = encoder ? "encoder" : "decoder";
1461     AVCodec *codec;
1462     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1463         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1464         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1465                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1466                 codec_string, c->codec->name);
1467         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1468         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1469             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1470                    codec_string, codec->name);
1471         exit_program(1);
1472     }
1473 }
1474
1475 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1476 {
1477     if (codec && codec->sample_fmts) {
1478         const enum AVSampleFormat *p = codec->sample_fmts;
1479         for (; *p != -1; p++) {
1480             if (*p == st->codec->sample_fmt)
1481                 break;
1482         }
1483         if (*p == -1) {
1484             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1485                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1486             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1487             av_log(NULL, AV_LOG_WARNING,
1488                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1489                    av_get_sample_fmt_name(st->codec->sample_fmt),
1490                    codec->name,
1491                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1492             st->codec->sample_fmt = codec->sample_fmts[0];
1493         }
1494     }
1495 }
1496
1497 static double
1498 get_sync_ipts(const OutputStream *ost, int64_t pts)
1499 {
1500     OutputFile *of = output_files[ost->file_index];
1501     return (double)(pts - of->start_time) / AV_TIME_BASE;
1502 }
1503
1504 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1505 {
1506     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1507     AVCodecContext          *avctx = ost->st->codec;
1508     int ret;
1509
1510     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1511         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1512         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1513
1514     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1515         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1516         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1517             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1518             pkt->pts = pkt->dts = max;
1519         }
1520     }
1521
1522     /*
1523      * Audio encoders may split the packets --  #frames in != #packets out.
1524      * But there is no reordering, so we can limit the number of output packets
1525      * by simply dropping them here.
1526      * Counting encoded video frames needs to be done separately because of
1527      * reordering, see do_video_out()
1528      */
1529     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1530         if (ost->frame_number >= ost->max_frames) {
1531             av_free_packet(pkt);
1532             return;
1533         }
1534         ost->frame_number++;
1535     }
1536
1537     while (bsfc) {
1538         AVPacket new_pkt = *pkt;
1539         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1540                                            &new_pkt.data, &new_pkt.size,
1541                                            pkt->data, pkt->size,
1542                                            pkt->flags & AV_PKT_FLAG_KEY);
1543         if (a > 0) {
1544             av_free_packet(pkt);
1545             new_pkt.destruct = av_destruct_packet;
1546         } else if (a < 0) {
1547             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1548                    bsfc->filter->name, pkt->stream_index,
1549                    avctx->codec ? avctx->codec->name : "copy");
1550             print_error("", a);
1551             if (exit_on_error)
1552                 exit_program(1);
1553         }
1554         *pkt = new_pkt;
1555
1556         bsfc = bsfc->next;
1557     }
1558
1559     pkt->stream_index = ost->index;
1560     ret = av_interleaved_write_frame(s, pkt);
1561     if (ret < 0) {
1562         print_error("av_interleaved_write_frame()", ret);
1563         exit_program(1);
1564     }
1565 }
1566
1567 // static int check_recording_time(OutputStream *ost)
1568 // {
1569 //     OutputFile *of = output_files[ost->file_index];
1570 //
1571 //     if (of->recording_time != INT64_MAX &&
1572 //         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1573 //                       AV_TIME_BASE_Q) >= 0) {
1574 //         ost->is_past_recording_time = 1;
1575 //         return 0;
1576 //     }
1577 //     return 1;
1578 // }
1579
1580 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1581                          AVFrame *frame)
1582 {
1583     AVCodecContext *enc = ost->st->codec;
1584     AVPacket pkt;
1585     int got_packet = 0;
1586
1587     av_init_packet(&pkt);
1588     pkt.data = NULL;
1589     pkt.size = 0;
1590 #if 0
1591     if (!check_recording_time(ost))
1592         return;
1593 #endif
1594     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1595         frame->pts = ost->sync_opts;
1596     ost->sync_opts = frame->pts + frame->nb_samples;
1597
1598     av_assert0(pkt.size || !pkt.data);
1599     update_benchmark(NULL);
1600     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1601         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1602         exit_program(1);
1603     }
1604     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1605
1606     if (got_packet) {
1607         if (pkt.pts != AV_NOPTS_VALUE)
1608             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1609         if (pkt.dts != AV_NOPTS_VALUE) {
1610             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1611         }
1612         if (pkt.duration > 0)
1613             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1614
1615         if (debug_ts) {
1616             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1617                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1618                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1619                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1620         }
1621
1622         write_frame(s, &pkt, ost);
1623
1624         audio_size += pkt.size;
1625         av_free_packet(&pkt);
1626     }
1627 }
1628
1629 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1630 {
1631     AVCodecContext *dec;
1632     AVPicture *picture2;
1633     AVPicture picture_tmp;
1634     uint8_t *buf = 0;
1635
1636     dec = ist->st->codec;
1637
1638     /* deinterlace : must be done before any resize */
1639     if (do_deinterlace) {
1640         int size;
1641
1642         /* create temporary picture */
1643         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1644         buf  = av_malloc(size);
1645         if (!buf)
1646             return;
1647
1648         picture2 = &picture_tmp;
1649         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1650
1651         if (avpicture_deinterlace(picture2, picture,
1652                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1653             /* if error, do not deinterlace */
1654             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1655             av_free(buf);
1656             buf = NULL;
1657             picture2 = picture;
1658         }
1659     } else {
1660         picture2 = picture;
1661     }
1662
1663     if (picture != picture2)
1664         *picture = *picture2;
1665     *bufp = buf;
1666 }
1667
1668 static void do_subtitle_out(AVFormatContext *s,
1669                             OutputStream *ost,
1670                             InputStream *ist,
1671                             AVSubtitle *sub,
1672                             int64_t pts)
1673 {
1674     static uint8_t *subtitle_out = NULL;
1675     int subtitle_out_max_size = 1024 * 1024;
1676     int subtitle_out_size, nb, i;
1677     AVCodecContext *enc;
1678     AVPacket pkt;
1679
1680     if (pts == AV_NOPTS_VALUE) {
1681         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1682         if (exit_on_error)
1683             exit_program(1);
1684         return;
1685     }
1686
1687     enc = ost->st->codec;
1688
1689     if (!subtitle_out) {
1690         subtitle_out = av_malloc(subtitle_out_max_size);
1691     }
1692
1693     /* Note: DVB subtitle need one packet to draw them and one other
1694        packet to clear them */
1695     /* XXX: signal it in the codec context ? */
1696     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1697         nb = 2;
1698     else
1699         nb = 1;
1700
1701     for (i = 0; i < nb; i++) {
1702         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1703
1704         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1705         // start_display_time is required to be 0
1706         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1707         sub->end_display_time  -= sub->start_display_time;
1708         sub->start_display_time = 0;
1709         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1710                                                     subtitle_out_max_size, sub);
1711         if (subtitle_out_size < 0) {
1712             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1713             exit_program(1);
1714         }
1715
1716         av_init_packet(&pkt);
1717         pkt.data = subtitle_out;
1718         pkt.size = subtitle_out_size;
1719         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1720         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1721             /* XXX: the pts correction is handled here. Maybe handling
1722                it in the codec would be better */
1723             if (i == 0)
1724                 pkt.pts += 90 * sub->start_display_time;
1725             else
1726                 pkt.pts += 90 * sub->end_display_time;
1727         }
1728         write_frame(s, &pkt, ost);
1729     }
1730 }
1731
1732 static double psnr(double d)
1733 {
1734     return -10.0 * log(d) / log(10.0);
1735 }
1736
1737 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1738                            int frame_size)
1739 {
1740     AVCodecContext *enc;
1741     int frame_number;
1742     double ti1, bitrate, avg_bitrate;
1743
1744     /* this is executed just the first time do_video_stats is called */
1745     if (!vstats_file) {
1746         vstats_file = fopen(vstats_filename, "w");
1747         if (!vstats_file) {
1748             perror("fopen");
1749             exit_program(1);
1750         }
1751     }
1752
1753     enc = ost->st->codec;
1754     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1755         frame_number = ost->frame_number;
1756         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1757         if (enc->flags&CODEC_FLAG_PSNR)
1758             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1759
1760         fprintf(vstats_file,"f_size= %6d ", frame_size);
1761         /* compute pts value */
1762         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1763         if (ti1 < 0.01)
1764             ti1 = 0.01;
1765
1766         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1767         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1768         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1769                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1770         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1771     }
1772 }
1773
1774
1775 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1776                          AVFrame *in_picture, float quality)
1777 {
1778     int nb_frames, i, ret, format_video_sync;
1779     AVCodecContext *enc;
1780     double sync_ipts, delta;
1781     double duration = 0;
1782     int frame_size = 0;
1783     InputStream *ist = NULL;
1784
1785     if (ost->source_index >= 0)
1786         ist = input_streams[ost->source_index];
1787
1788     enc = ost->st->codec;
1789
1790     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1791         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1792
1793     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1794     delta = sync_ipts - ost->sync_opts + duration;
1795
1796     /* by default, we output a single frame */
1797     nb_frames = 1;
1798
1799     format_video_sync = video_sync_method;
1800     if (format_video_sync == VSYNC_AUTO)
1801         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1802
1803     switch (format_video_sync) {
1804     case VSYNC_CFR:
1805         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1806         if (delta < -1.1)
1807             nb_frames = 0;
1808         else if (delta > 1.1)
1809             nb_frames = lrintf(delta);
1810         break;
1811     case VSYNC_VFR:
1812         if (delta <= -0.6)
1813             nb_frames = 0;
1814         else if (delta > 0.6)
1815             ost->sync_opts = lrint(sync_ipts);
1816         break;
1817     case VSYNC_DROP:
1818     case VSYNC_PASSTHROUGH:
1819         ost->sync_opts = lrint(sync_ipts);
1820         break;
1821     default:
1822         av_assert0(0);
1823     }
1824
1825     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1826     if (nb_frames == 0) {
1827         nb_frames_drop++;
1828         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1829         return;
1830     } else if (nb_frames > 1) {
1831         nb_frames_dup += nb_frames - 1;
1832         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1833     }
1834
1835     /* duplicates frame if needed */
1836     for (i = 0; i < nb_frames; i++) {
1837         AVPacket pkt;
1838         av_init_packet(&pkt);
1839         pkt.data = NULL;
1840         pkt.size = 0;
1841
1842         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1843             enc->codec->id == CODEC_ID_RAWVIDEO) {
1844             /* raw pictures are written as AVPicture structure to
1845                avoid any copies. We support temporarily the older
1846                method. */
1847             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1848             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1849             pkt.data   = (uint8_t *)in_picture;
1850             pkt.size   =  sizeof(AVPicture);
1851             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1852             pkt.flags |= AV_PKT_FLAG_KEY;
1853
1854             write_frame(s, &pkt, ost);
1855         } else {
1856             int got_packet;
1857             AVFrame big_picture;
1858
1859             big_picture = *in_picture;
1860             /* better than nothing: use input picture interlaced
1861                settings */
1862             big_picture.interlaced_frame = in_picture->interlaced_frame;
1863             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1864                 if (ost->top_field_first == -1)
1865                     big_picture.top_field_first = in_picture->top_field_first;
1866                 else
1867                     big_picture.top_field_first = !!ost->top_field_first;
1868             }
1869
1870             /* handles same_quant here. This is not correct because it may
1871                not be a global option */
1872             big_picture.quality = quality;
1873             if (!enc->me_threshold)
1874                 big_picture.pict_type = 0;
1875             big_picture.pts = ost->sync_opts;
1876             if (ost->forced_kf_index < ost->forced_kf_count &&
1877                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1878                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1879                 ost->forced_kf_index++;
1880             }
1881             update_benchmark(NULL);
1882             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1883             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1884             if (ret < 0) {
1885                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1886                 exit_program(1);
1887             }
1888
1889             if (got_packet) {
1890                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1891                     pkt.pts = ost->sync_opts;
1892
1893                 if (pkt.pts != AV_NOPTS_VALUE)
1894                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1895                 if (pkt.dts != AV_NOPTS_VALUE)
1896                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1897
1898                 if (debug_ts) {
1899                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1900                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1901                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1902                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1903                 }
1904
1905                 write_frame(s, &pkt, ost);
1906                 frame_size = pkt.size;
1907                 video_size += pkt.size;
1908                 av_free_packet(&pkt);
1909
1910                 /* if two pass, output log */
1911                 if (ost->logfile && enc->stats_out) {
1912                     fprintf(ost->logfile, "%s", enc->stats_out);
1913                 }
1914             }
1915         }
1916         ost->sync_opts++;
1917         /*
1918          * For video, number of frames in == number of packets out.
1919          * But there may be reordering, so we can't throw away frames on encoder
1920          * flush, we need to limit them here, before they go into encoder.
1921          */
1922         ost->frame_number++;
1923     }
1924     if (vstats_filename && frame_size)
1925         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1926 }
1927
1928 /* check for new output on any of the filtergraphs */
1929 static int poll_filters(void)
1930 {
1931     AVFilterBufferRef *picref;
1932     AVFrame *filtered_frame = NULL;
1933     int i, ret, ret_all;
1934     unsigned nb_success, nb_eof;
1935     int64_t frame_pts;
1936
1937     while (1) {
1938         /* Reap all buffers present in the buffer sinks */
1939         for (i = 0; i < nb_output_streams; i++) {
1940             OutputStream *ost = output_streams[i];
1941             OutputFile    *of = output_files[ost->file_index];
1942             int ret = 0;
1943
1944             if (!ost->filter || ost->is_past_recording_time)
1945                 continue;
1946
1947             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1948                 return AVERROR(ENOMEM);
1949             } else
1950                 avcodec_get_frame_defaults(ost->filtered_frame);
1951             filtered_frame = ost->filtered_frame;
1952
1953             while (1) {
1954                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
1955                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1956                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1957                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1958                                                     ost->st->codec->frame_size);
1959                 else
1960 #ifdef SINKA
1961                     ret = av_buffersink_read(ost->filter->filter, &picref);
1962 #else
1963                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1964                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1965 #endif
1966                 if (ret < 0) {
1967                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1968                         char buf[256];
1969                         av_strerror(ret, buf, sizeof(buf));
1970                         av_log(NULL, AV_LOG_WARNING,
1971                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1972                     }
1973                     break;
1974                 }
1975                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
1976                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1977                 else if (picref->pts != AV_NOPTS_VALUE)
1978                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1979                                                     ost->filter->filter->inputs[0]->time_base,
1980                                                     ost->st->codec->time_base) -
1981                                         av_rescale_q(of->start_time,
1982                                                     AV_TIME_BASE_Q,
1983                                                     ost->st->codec->time_base);
1984                 //if (ost->source_index >= 0)
1985                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1986
1987                 if (of->start_time && filtered_frame->pts < of->start_time)
1988                     return 0;
1989
1990                 switch (ost->filter->filter->inputs[0]->type) {
1991                 case AVMEDIA_TYPE_VIDEO:
1992                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
1993                     filtered_frame->pts = frame_pts;
1994                     if (!ost->frame_aspect_ratio)
1995                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1996
1997                     do_video_out(of->ctx, ost, filtered_frame,
1998                                  same_quant ? ost->last_quality :
1999                                               ost->st->codec->global_quality);
2000                     break;
2001                 case AVMEDIA_TYPE_AUDIO:
2002                     avfilter_copy_buf_props(filtered_frame, picref);
2003                     filtered_frame->pts = frame_pts;
2004                     do_audio_out(of->ctx, ost, filtered_frame);
2005                     break;
2006                 default:
2007                     // TODO support subtitle filters
2008                     av_assert0(0);
2009                 }
2010
2011                 avfilter_unref_buffer(picref);
2012             }
2013         }
2014         /* Request frames through all the graphs */
2015         ret_all = nb_success = nb_eof = 0;
2016         for (i = 0; i < nb_filtergraphs; i++) {
2017             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2018             if (!ret) {
2019                 nb_success++;
2020             } else if (ret == AVERROR_EOF) {
2021                 nb_eof++;
2022             } else if (ret != AVERROR(EAGAIN)) {
2023                 char buf[256];
2024                 av_strerror(ret, buf, sizeof(buf));
2025                 av_log(NULL, AV_LOG_WARNING,
2026                        "Error in request_frame(): %s\n", buf);
2027                 ret_all = ret;
2028             }
2029         }
2030         if (!nb_success)
2031             break;
2032         /* Try again if anything succeeded */
2033     }
2034     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2035 }
2036
2037 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2038 {
2039     char buf[1024];
2040     OutputStream *ost;
2041     AVFormatContext *oc;
2042     int64_t total_size;
2043     AVCodecContext *enc;
2044     int frame_number, vid, i;
2045     double bitrate;
2046     int64_t pts = INT64_MAX;
2047     static int64_t last_time = -1;
2048     static int qp_histogram[52];
2049     int hours, mins, secs, us;
2050
2051     if (!print_stats && !is_last_report)
2052         return;
2053
2054     if (!is_last_report) {
2055         if (last_time == -1) {
2056             last_time = cur_time;
2057             return;
2058         }
2059         if ((cur_time - last_time) < 500000)
2060             return;
2061         last_time = cur_time;
2062     }
2063
2064
2065     oc = output_files[0]->ctx;
2066
2067     total_size = avio_size(oc->pb);
2068     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2069         total_size = avio_tell(oc->pb);
2070         if (total_size < 0)
2071             total_size = 0;
2072     }
2073
2074     buf[0] = '\0';
2075     vid = 0;
2076     for (i = 0; i < nb_output_streams; i++) {
2077         float q = -1;
2078         ost = output_streams[i];
2079         enc = ost->st->codec;
2080         if (!ost->stream_copy && enc->coded_frame)
2081             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2082         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2083             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2084         }
2085         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2086             float fps, t = (cur_time-timer_start) / 1000000.0;
2087
2088             frame_number = ost->frame_number;
2089             fps = t > 1 ? frame_number / t : 0;
2090             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2091                      frame_number, fps < 9.95, fps, q);
2092             if (is_last_report)
2093                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2094             if (qp_hist) {
2095                 int j;
2096                 int qp = lrintf(q);
2097                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2098                     qp_histogram[qp]++;
2099                 for (j = 0; j < 32; j++)
2100                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2101             }
2102             if (enc->flags&CODEC_FLAG_PSNR) {
2103                 int j;
2104                 double error, error_sum = 0;
2105                 double scale, scale_sum = 0;
2106                 char type[3] = { 'Y','U','V' };
2107                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2108                 for (j = 0; j < 3; j++) {
2109                     if (is_last_report) {
2110                         error = enc->error[j];
2111                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2112                     } else {
2113                         error = enc->coded_frame->error[j];
2114                         scale = enc->width * enc->height * 255.0 * 255.0;
2115                     }
2116                     if (j)
2117                         scale /= 4;
2118                     error_sum += error;
2119                     scale_sum += scale;
2120                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2121                 }
2122                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2123             }
2124             vid = 1;
2125         }
2126         /* compute min output value */
2127         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2128                                       ost->st->time_base, AV_TIME_BASE_Q));
2129     }
2130
2131     secs = pts / AV_TIME_BASE;
2132     us = pts % AV_TIME_BASE;
2133     mins = secs / 60;
2134     secs %= 60;
2135     hours = mins / 60;
2136     mins %= 60;
2137
2138     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2139
2140     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2141              "size=%8.0fkB time=", total_size / 1024.0);
2142     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2143              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2144              (100 * us) / AV_TIME_BASE);
2145     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2146              "bitrate=%6.1fkbits/s", bitrate);
2147
2148     if (nb_frames_dup || nb_frames_drop)
2149         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2150                 nb_frames_dup, nb_frames_drop);
2151
2152     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2153
2154     fflush(stderr);
2155
2156     if (is_last_report) {
2157         int64_t raw= audio_size + video_size + extra_size;
2158         av_log(NULL, AV_LOG_INFO, "\n");
2159         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2160                video_size / 1024.0,
2161                audio_size / 1024.0,
2162                extra_size / 1024.0,
2163                100.0 * (total_size - raw) / raw
2164         );
2165         if(video_size + audio_size + extra_size == 0){
2166             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2167         }
2168     }
2169 }
2170
2171 static void flush_encoders(void)
2172 {
2173     int i, ret;
2174
2175     for (i = 0; i < nb_output_streams; i++) {
2176         OutputStream   *ost = output_streams[i];
2177         AVCodecContext *enc = ost->st->codec;
2178         AVFormatContext *os = output_files[ost->file_index]->ctx;
2179         int stop_encoding = 0;
2180
2181         if (!ost->encoding_needed)
2182             continue;
2183
2184         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2185             continue;
2186         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2187             continue;
2188
2189         for (;;) {
2190             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2191             const char *desc;
2192             int64_t *size;
2193
2194             switch (ost->st->codec->codec_type) {
2195             case AVMEDIA_TYPE_AUDIO:
2196                 encode = avcodec_encode_audio2;
2197                 desc   = "Audio";
2198                 size   = &audio_size;
2199                 break;
2200             case AVMEDIA_TYPE_VIDEO:
2201                 encode = avcodec_encode_video2;
2202                 desc   = "Video";
2203                 size   = &video_size;
2204                 break;
2205             default:
2206                 stop_encoding = 1;
2207             }
2208
2209             if (encode) {
2210                 AVPacket pkt;
2211                 int got_packet;
2212                 av_init_packet(&pkt);
2213                 pkt.data = NULL;
2214                 pkt.size = 0;
2215
2216                 update_benchmark(NULL);
2217                 ret = encode(enc, &pkt, NULL, &got_packet);
2218                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2219                 if (ret < 0) {
2220                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2221                     exit_program(1);
2222                 }
2223                 *size += pkt.size;
2224                 if (ost->logfile && enc->stats_out) {
2225                     fprintf(ost->logfile, "%s", enc->stats_out);
2226                 }
2227                 if (!got_packet) {
2228                     stop_encoding = 1;
2229                     break;
2230                 }
2231                 if (pkt.pts != AV_NOPTS_VALUE)
2232                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2233                 if (pkt.dts != AV_NOPTS_VALUE)
2234                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2235                 write_frame(os, &pkt, ost);
2236             }
2237
2238             if (stop_encoding)
2239                 break;
2240         }
2241     }
2242 }
2243
2244 /*
2245  * Check whether a packet from ist should be written into ost at this time
2246  */
2247 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2248 {
2249     OutputFile *of = output_files[ost->file_index];
2250     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2251
2252     if (ost->source_index != ist_index)
2253         return 0;
2254
2255     if (of->start_time && ist->pts < of->start_time)
2256         return 0;
2257
2258     if (of->recording_time != INT64_MAX &&
2259         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2260                       (AVRational){ 1, 1000000 }) >= 0) {
2261         ost->is_past_recording_time = 1;
2262         return 0;
2263     }
2264
2265     return 1;
2266 }
2267
2268 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2269 {
2270     OutputFile *of = output_files[ost->file_index];
2271     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2272     AVPicture pict;
2273     AVPacket opkt;
2274
2275     av_init_packet(&opkt);
2276
2277     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2278         !ost->copy_initial_nonkeyframes)
2279         return;
2280
2281     /* force the input stream PTS */
2282     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2283         audio_size += pkt->size;
2284     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2285         video_size += pkt->size;
2286         ost->sync_opts++;
2287     }
2288
2289     if (pkt->pts != AV_NOPTS_VALUE)
2290         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2291     else
2292         opkt.pts = AV_NOPTS_VALUE;
2293
2294     if (pkt->dts == AV_NOPTS_VALUE)
2295         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2296     else
2297         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2298     opkt.dts -= ost_tb_start_time;
2299
2300     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2301     opkt.flags    = pkt->flags;
2302
2303     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2304     if (  ost->st->codec->codec_id != CODEC_ID_H264
2305        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2306        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2307        && ost->st->codec->codec_id != CODEC_ID_VC1
2308        ) {
2309         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2310             opkt.destruct = av_destruct_packet;
2311     } else {
2312         opkt.data = pkt->data;
2313         opkt.size = pkt->size;
2314     }
2315     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2316         /* store AVPicture in AVPacket, as expected by the output format */
2317         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2318         opkt.data = (uint8_t *)&pict;
2319         opkt.size = sizeof(AVPicture);
2320         opkt.flags |= AV_PKT_FLAG_KEY;
2321     }
2322
2323     write_frame(of->ctx, &opkt, ost);
2324     ost->st->codec->frame_number++;
2325     av_free_packet(&opkt);
2326 }
2327
2328 static void rate_emu_sleep(InputStream *ist)
2329 {
2330     if (input_files[ist->file_index]->rate_emu) {
2331         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2332         int64_t now = av_gettime() - ist->start;
2333         if (pts > now)
2334             usleep(pts - now);
2335     }
2336 }
2337
2338 static int guess_input_channel_layout(InputStream *ist)
2339 {
2340     AVCodecContext *dec = ist->st->codec;
2341
2342     if (!dec->channel_layout) {
2343         char layout_name[256];
2344
2345         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2346         if (!dec->channel_layout)
2347             return 0;
2348         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2349                                      dec->channels, dec->channel_layout);
2350         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2351                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2352     }
2353     return 1;
2354 }
2355
2356 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2357 {
2358     AVFrame *decoded_frame;
2359     AVCodecContext *avctx = ist->st->codec;
2360     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
2361     int i, ret, resample_changed;
2362
2363     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2364         return AVERROR(ENOMEM);
2365     else
2366         avcodec_get_frame_defaults(ist->decoded_frame);
2367     decoded_frame = ist->decoded_frame;
2368
2369     update_benchmark(NULL);
2370     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2371     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2372     if (ret < 0) {
2373         return ret;
2374     }
2375     if (avctx->sample_rate <= 0) {
2376         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2377         return AVERROR_INVALIDDATA;
2378     }
2379
2380     if (!*got_output) {
2381         /* no audio frame */
2382         if (!pkt->size)
2383             for (i = 0; i < ist->nb_filters; i++)
2384 #ifdef SRCA
2385                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2386 #else
2387                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2388 #endif
2389         return ret;
2390     }
2391
2392     /* if the decoder provides a pts, use it instead of the last packet pts.
2393        the decoder could be delaying output by a packet or more. */
2394     if (decoded_frame->pts != AV_NOPTS_VALUE)
2395         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2396     else if (pkt->pts != AV_NOPTS_VALUE) {
2397         decoded_frame->pts = pkt->pts;
2398         pkt->pts           = AV_NOPTS_VALUE;
2399     }else
2400         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2401
2402
2403 #if 1
2404     /* increment next_dts to use for the case where the input stream does not
2405        have timestamps or there are multiple frames in the packet */
2406     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2407                      avctx->sample_rate;
2408     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2409                      avctx->sample_rate;
2410 #endif
2411
2412     // preprocess audio (volume)
2413     if (audio_volume != 256) {
2414         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
2415         void *samples = decoded_frame->data[0];
2416         switch (avctx->sample_fmt) {
2417         case AV_SAMPLE_FMT_U8:
2418         {
2419             uint8_t *volp = samples;
2420             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2421                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
2422                 *volp++ = av_clip_uint8(v);
2423             }
2424             break;
2425         }
2426         case AV_SAMPLE_FMT_S16:
2427         {
2428             int16_t *volp = samples;
2429             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2430                 int v = ((*volp) * audio_volume + 128) >> 8;
2431                 *volp++ = av_clip_int16(v);
2432             }
2433             break;
2434         }
2435         case AV_SAMPLE_FMT_S32:
2436         {
2437             int32_t *volp = samples;
2438             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2439                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2440                 *volp++ = av_clipl_int32(v);
2441             }
2442             break;
2443         }
2444         case AV_SAMPLE_FMT_FLT:
2445         {
2446             float *volp = samples;
2447             float scale = audio_volume / 256.f;
2448             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2449                 *volp++ *= scale;
2450             }
2451             break;
2452         }
2453         case AV_SAMPLE_FMT_DBL:
2454         {
2455             double *volp = samples;
2456             double scale = audio_volume / 256.;
2457             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2458                 *volp++ *= scale;
2459             }
2460             break;
2461         }
2462         default:
2463             av_log(NULL, AV_LOG_FATAL,
2464                    "Audio volume adjustment on sample format %s is not supported.\n",
2465                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2466             exit_program(1);
2467         }
2468     }
2469
2470     rate_emu_sleep(ist);
2471
2472     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2473                        ist->resample_channels       != avctx->channels               ||
2474                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2475                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2476     if (resample_changed) {
2477         char layout1[64], layout2[64];
2478
2479         if (!guess_input_channel_layout(ist)) {
2480             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2481                    "layout for Input Stream #%d.%d\n", ist->file_index,
2482                    ist->st->index);
2483             exit_program(1);
2484         }
2485         decoded_frame->channel_layout = avctx->channel_layout;
2486
2487         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2488                                      ist->resample_channel_layout);
2489         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2490                                      decoded_frame->channel_layout);
2491
2492         av_log(NULL, AV_LOG_INFO,
2493                "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
2494                ist->file_index, ist->st->index,
2495                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2496                ist->resample_channels, layout1,
2497                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2498                avctx->channels, layout2);
2499
2500         ist->resample_sample_fmt     = decoded_frame->format;
2501         ist->resample_sample_rate    = decoded_frame->sample_rate;
2502         ist->resample_channel_layout = decoded_frame->channel_layout;
2503         ist->resample_channels       = avctx->channels;
2504
2505         for (i = 0; i < nb_filtergraphs; i++)
2506             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2507                 configure_filtergraph(filtergraphs[i]) < 0) {
2508                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2509                 exit_program(1);
2510             }
2511     }
2512
2513     for (i = 0; i < ist->nb_filters; i++) {
2514 #ifdef SRCA
2515         av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
2516 #else
2517         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2518 #endif
2519     }
2520
2521     return ret;
2522 }
2523
2524 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2525 {
2526     AVFrame *decoded_frame;
2527     void *buffer_to_free = NULL;
2528     int i, ret = 0, resample_changed;
2529     int64_t best_effort_timestamp;
2530     AVRational *frame_sample_aspect;
2531     float quality;
2532
2533     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2534         return AVERROR(ENOMEM);
2535     else
2536         avcodec_get_frame_defaults(ist->decoded_frame);
2537     decoded_frame = ist->decoded_frame;
2538     pkt->pts  = *pkt_pts;
2539     pkt->dts  = ist->dts;
2540     *pkt_pts  = AV_NOPTS_VALUE;
2541
2542     update_benchmark(NULL);
2543     ret = avcodec_decode_video2(ist->st->codec,
2544                                 decoded_frame, got_output, pkt);
2545     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2546     if (ret < 0)
2547         return ret;
2548
2549     quality = same_quant ? decoded_frame->quality : 0;
2550     if (!*got_output) {
2551         /* no picture yet */
2552         if (!pkt->size)
2553             for (i = 0; i < ist->nb_filters; i++)
2554 #ifdef SRCA
2555                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2556 #else
2557                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2558 #endif
2559         return ret;
2560     }
2561
2562     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2563     if(best_effort_timestamp != AV_NOPTS_VALUE)
2564         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2565
2566     pkt->size = 0;
2567
2568     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2569
2570     rate_emu_sleep(ist);
2571
2572     if (ist->st->sample_aspect_ratio.num)
2573         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2574
2575     resample_changed = ist->resample_width   != decoded_frame->width  ||
2576                        ist->resample_height  != decoded_frame->height ||
2577                        ist->resample_pix_fmt != decoded_frame->format;
2578     if (resample_changed) {
2579         av_log(NULL, AV_LOG_INFO,
2580                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2581                ist->file_index, ist->st->index,
2582                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2583                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2584
2585         ist->resample_width   = decoded_frame->width;
2586         ist->resample_height  = decoded_frame->height;
2587         ist->resample_pix_fmt = decoded_frame->format;
2588
2589         for (i = 0; i < nb_filtergraphs; i++)
2590             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2591                 configure_filtergraph(filtergraphs[i]) < 0) {
2592                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2593                 exit_program(1);
2594             }
2595     }
2596
2597     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2598     for (i = 0; i < ist->nb_filters; i++) {
2599         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2600                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2601                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2602         // XXX what an ugly hack
2603         if (ist->filters[i]->graph->nb_outputs == 1)
2604             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2605
2606         if (!frame_sample_aspect->num)
2607             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2608         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2609             FrameBuffer      *buf = decoded_frame->opaque;
2610             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2611                                         decoded_frame->data, decoded_frame->linesize,
2612                                         AV_PERM_READ | AV_PERM_PRESERVE,
2613                                         ist->st->codec->width, ist->st->codec->height,
2614                                         ist->st->codec->pix_fmt);
2615
2616             avfilter_copy_frame_props(fb, decoded_frame);
2617             fb->buf->priv           = buf;
2618             fb->buf->free           = filter_release_buffer;
2619
2620             av_assert0(buf->refcount>0);
2621             buf->refcount++;
2622 #ifdef SRCA
2623             av_buffersrc_buffer(ist->filters[i]->filter, fb);
2624         } else
2625         if(av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame)<0) {
2626 #else
2627             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2628                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2629                                  AV_BUFFERSRC_FLAG_NO_COPY);
2630         } else
2631         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2632 #endif
2633             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2634             exit_program(1);
2635         }
2636
2637     }
2638
2639     av_free(buffer_to_free);
2640     return ret;
2641 }
2642
2643 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2644 {
2645     AVSubtitle subtitle;
2646     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2647                                           &subtitle, got_output, pkt);
2648     if (ret < 0)
2649         return ret;
2650     if (!*got_output)
2651         return ret;
2652
2653     rate_emu_sleep(ist);
2654
2655     for (i = 0; i < nb_output_streams; i++) {
2656         OutputStream *ost = output_streams[i];
2657
2658         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2659             continue;
2660
2661         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2662     }
2663
2664     avsubtitle_free(&subtitle);
2665     return ret;
2666 }
2667
2668 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2669 static int output_packet(InputStream *ist, const AVPacket *pkt)
2670 {
2671     int ret = 0, i;
2672     int got_output;
2673     int64_t pkt_pts = AV_NOPTS_VALUE;
2674
2675     AVPacket avpkt;
2676     if (!ist->saw_first_ts) {
2677         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2678         ist->pts = 0;
2679         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2680             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2681             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2682         }
2683         ist->saw_first_ts = 1;
2684     }
2685
2686     if (ist->next_dts == AV_NOPTS_VALUE)
2687         ist->next_dts = ist->dts;
2688     if (ist->next_pts == AV_NOPTS_VALUE)
2689         ist->next_pts = ist->pts;
2690
2691     if (pkt == NULL) {
2692         /* EOF handling */
2693         av_init_packet(&avpkt);
2694         avpkt.data = NULL;
2695         avpkt.size = 0;
2696         goto handle_eof;
2697     } else {
2698         avpkt = *pkt;
2699     }
2700
2701     if (pkt->dts != AV_NOPTS_VALUE) {
2702         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2703         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2704             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2705     }
2706     if(pkt->pts != AV_NOPTS_VALUE)
2707         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2708
2709     // while we have more to decode or while the decoder did output something on EOF
2710     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2711         int duration;
2712     handle_eof:
2713
2714         ist->pts = ist->next_pts;
2715         ist->dts = ist->next_dts;
2716
2717         if (avpkt.size && avpkt.size != pkt->size) {
2718             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2719                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2720             ist->showed_multi_packet_warning = 1;
2721         }
2722
2723         switch (ist->st->codec->codec_type) {
2724         case AVMEDIA_TYPE_AUDIO:
2725             ret = transcode_audio    (ist, &avpkt, &got_output);
2726             break;
2727         case AVMEDIA_TYPE_VIDEO:
2728             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2729             if (avpkt.duration) {
2730                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2731             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2732                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2733                 duration = ((int64_t)AV_TIME_BASE *
2734                                 ist->st->codec->time_base.num * ticks) /
2735                                 ist->st->codec->time_base.den;
2736             } else
2737                 duration = 0;
2738
2739             if(ist->dts != AV_NOPTS_VALUE && duration) {
2740                 ist->next_dts += duration;
2741             }else
2742                 ist->next_dts = AV_NOPTS_VALUE;
2743
2744             if (got_output)
2745                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2746             break;
2747         case AVMEDIA_TYPE_SUBTITLE:
2748             ret = transcode_subtitles(ist, &avpkt, &got_output);
2749             break;
2750         default:
2751             return -1;
2752         }
2753
2754         if (ret < 0)
2755             return ret;
2756
2757         avpkt.dts=
2758         avpkt.pts= AV_NOPTS_VALUE;
2759
2760         // touch data and size only if not EOF
2761         if (pkt) {
2762             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2763                 ret = avpkt.size;
2764             avpkt.data += ret;
2765             avpkt.size -= ret;
2766         }
2767         if (!got_output) {
2768             continue;
2769         }
2770     }
2771
2772     /* handle stream copy */
2773     if (!ist->decoding_needed) {
2774         rate_emu_sleep(ist);
2775         ist->dts = ist->next_dts;
2776         switch (ist->st->codec->codec_type) {
2777         case AVMEDIA_TYPE_AUDIO:
2778             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2779                              ist->st->codec->sample_rate;
2780             break;
2781         case AVMEDIA_TYPE_VIDEO:
2782             if (pkt->duration) {
2783                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2784             } else if(ist->st->codec->time_base.num != 0) {
2785                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2786                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2787                                   ist->st->codec->time_base.num * ticks) /
2788                                   ist->st->codec->time_base.den;
2789             }
2790             break;
2791         }
2792         ist->pts = ist->dts;
2793         ist->next_pts = ist->next_dts;
2794     }
2795     for (i = 0; pkt && i < nb_output_streams; i++) {
2796         OutputStream *ost = output_streams[i];
2797
2798         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2799             continue;
2800
2801         do_streamcopy(ist, ost, pkt);
2802     }
2803
2804     return 0;
2805 }
2806
2807 static void print_sdp(void)
2808 {
2809     char sdp[2048];
2810     int i;
2811     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2812
2813     if (!avc)
2814         exit_program(1);
2815     for (i = 0; i < nb_output_files; i++)
2816         avc[i] = output_files[i]->ctx;
2817
2818     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2819     printf("SDP:\n%s\n", sdp);
2820     fflush(stdout);
2821     av_freep(&avc);
2822 }
2823
2824 static int init_input_stream(int ist_index, char *error, int error_len)
2825 {
2826     int i;
2827     InputStream *ist = input_streams[ist_index];
2828
2829     if (ist->decoding_needed) {
2830         AVCodec *codec = ist->dec;
2831         if (!codec) {
2832             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2833                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2834             return AVERROR(EINVAL);
2835         }
2836
2837         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2838         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2839             ist->st->codec->get_buffer     = codec_get_buffer;
2840             ist->st->codec->release_buffer = codec_release_buffer;
2841             ist->st->codec->opaque         = ist;
2842         }
2843
2844         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2845             av_dict_set(&ist->opts, "threads", "auto", 0);
2846         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2847             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2848                     ist->file_index, ist->st->index);
2849             return AVERROR(EINVAL);
2850         }
2851         assert_codec_experimental(ist->st->codec, 0);
2852         assert_avoptions(ist->opts);
2853     }
2854
2855     ist->next_pts = AV_NOPTS_VALUE;
2856     ist->next_dts = AV_NOPTS_VALUE;
2857     ist->is_start = 1;
2858
2859     return 0;
2860 }
2861
2862 static InputStream *get_input_stream(OutputStream *ost)
2863 {
2864     if (ost->source_index >= 0)
2865         return input_streams[ost->source_index];
2866
2867     if (ost->filter) {
2868         FilterGraph *fg = ost->filter->graph;
2869         int i;
2870
2871         for (i = 0; i < fg->nb_inputs; i++)
2872             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2873                 return fg->inputs[i]->ist;
2874     }
2875
2876     return NULL;
2877 }
2878
2879 static int transcode_init(void)
2880 {
2881     int ret = 0, i, j, k;
2882     AVFormatContext *oc;
2883     AVCodecContext *codec, *icodec;
2884     OutputStream *ost;
2885     InputStream *ist;
2886     char error[1024];
2887     int want_sdp = 1;
2888
2889     /* init framerate emulation */
2890     for (i = 0; i < nb_input_files; i++) {
2891         InputFile *ifile = input_files[i];
2892         if (ifile->rate_emu)
2893             for (j = 0; j < ifile->nb_streams; j++)
2894                 input_streams[j + ifile->ist_index]->start = av_gettime();
2895     }
2896
2897     /* output stream init */
2898     for (i = 0; i < nb_output_files; i++) {
2899         oc = output_files[i]->ctx;
2900         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2901             av_dump_format(oc, i, oc->filename, 1);
2902             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2903             return AVERROR(EINVAL);
2904         }
2905     }
2906
2907     /* init complex filtergraphs */
2908     for (i = 0; i < nb_filtergraphs; i++)
2909         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2910             return ret;
2911
2912     /* for each output stream, we compute the right encoding parameters */
2913     for (i = 0; i < nb_output_streams; i++) {
2914         ost = output_streams[i];
2915         oc  = output_files[ost->file_index]->ctx;
2916         ist = get_input_stream(ost);
2917
2918         if (ost->attachment_filename)
2919             continue;
2920
2921         codec  = ost->st->codec;
2922
2923         if (ist) {
2924             icodec = ist->st->codec;
2925
2926             ost->st->disposition          = ist->st->disposition;
2927             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2928             codec->chroma_sample_location = icodec->chroma_sample_location;
2929         }
2930
2931         if (ost->stream_copy) {
2932             uint64_t extra_size;
2933
2934             av_assert0(ist && !ost->filter);
2935
2936             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2937
2938             if (extra_size > INT_MAX) {
2939                 return AVERROR(EINVAL);
2940             }
2941
2942             /* if stream_copy is selected, no need to decode or encode */
2943             codec->codec_id   = icodec->codec_id;
2944             codec->codec_type = icodec->codec_type;
2945
2946             if (!codec->codec_tag) {
2947                 if (!oc->oformat->codec_tag ||
2948                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2949                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2950                     codec->codec_tag = icodec->codec_tag;
2951             }
2952
2953             codec->bit_rate       = icodec->bit_rate;
2954             codec->rc_max_rate    = icodec->rc_max_rate;
2955             codec->rc_buffer_size = icodec->rc_buffer_size;
2956             codec->field_order    = icodec->field_order;
2957             codec->extradata      = av_mallocz(extra_size);
2958             if (!codec->extradata) {
2959                 return AVERROR(ENOMEM);
2960             }
2961             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2962             codec->extradata_size= icodec->extradata_size;
2963             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2964
2965             codec->time_base = ist->st->time_base;
2966             /*
2967              * Avi is a special case here because it supports variable fps but
2968              * having the fps and timebase differe significantly adds quite some
2969              * overhead
2970              */
2971             if(!strcmp(oc->oformat->name, "avi")) {
2972                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2973                                  && av_q2d(ist->st->time_base) < 1.0/500
2974                     || copy_tb==0){
2975                     codec->time_base = icodec->time_base;
2976                     codec->time_base.num *= icodec->ticks_per_frame;
2977                     codec->time_base.den *= 2;
2978                     codec->ticks_per_frame = 2;
2979                 }
2980             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2981                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2982                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2983             ) {
2984                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2985                                 && av_q2d(ist->st->time_base) < 1.0/500
2986                    || copy_tb==0){
2987                     codec->time_base = icodec->time_base;
2988                     codec->time_base.num *= icodec->ticks_per_frame;
2989                 }
2990             }
2991             av_reduce(&codec->time_base.num, &codec->time_base.den,
2992                         codec->time_base.num, codec->time_base.den, INT_MAX);
2993
2994             switch (codec->codec_type) {
2995             case AVMEDIA_TYPE_AUDIO:
2996                 if (audio_volume != 256) {
2997                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2998                     exit_program(1);
2999                 }
3000                 codec->channel_layout     = icodec->channel_layout;
3001                 codec->sample_rate        = icodec->sample_rate;
3002                 codec->channels           = icodec->channels;
3003                 codec->frame_size         = icodec->frame_size;
3004                 codec->audio_service_type = icodec->audio_service_type;
3005                 codec->block_align        = icodec->block_align;
3006                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
3007                     codec->block_align= 0;
3008                 if(codec->codec_id == CODEC_ID_AC3)
3009                     codec->block_align= 0;
3010                 break;
3011             case AVMEDIA_TYPE_VIDEO:
3012                 codec->pix_fmt            = icodec->pix_fmt;
3013                 codec->width              = icodec->width;
3014                 codec->height             = icodec->height;
3015                 codec->has_b_frames       = icodec->has_b_frames;
3016                 if (!codec->sample_aspect_ratio.num) {
3017                     codec->sample_aspect_ratio   =
3018                     ost->st->sample_aspect_ratio =
3019                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3020                         ist->st->codec->sample_aspect_ratio.num ?
3021                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3022                 }
3023                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3024                 break;
3025             case AVMEDIA_TYPE_SUBTITLE:
3026                 codec->width  = icodec->width;
3027                 codec->height = icodec->height;
3028                 break;
3029             case AVMEDIA_TYPE_DATA:
3030             case AVMEDIA_TYPE_ATTACHMENT:
3031                 break;
3032             default:
3033                 abort();
3034             }
3035         } else {
3036             if (!ost->enc)
3037                 ost->enc = avcodec_find_encoder(codec->codec_id);
3038             if (!ost->enc) {
3039                 /* should only happen when a default codec is not present. */
3040                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3041                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3042                 ret = AVERROR(EINVAL);
3043                 goto dump_format;
3044             }
3045
3046             if (ist)
3047                 ist->decoding_needed = 1;
3048             ost->encoding_needed = 1;
3049
3050             if (!ost->filter &&
3051                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3052                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3053                     FilterGraph *fg;
3054                     fg = init_simple_filtergraph(ist, ost);
3055                     if (configure_simple_filtergraph(fg)) {
3056                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3057                         exit(1);
3058                     }
3059             }
3060
3061             switch (codec->codec_type) {
3062             case AVMEDIA_TYPE_AUDIO:
3063                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3064                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3065                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3066                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3067                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3068                 break;
3069             case AVMEDIA_TYPE_VIDEO:
3070                 if (ist && !ost->frame_rate.num)
3071                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3072                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3073                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3074                     ost->frame_rate = ost->enc->supported_framerates[idx];
3075                 }
3076                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3077                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3078                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3079                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3080                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3081                 }
3082                 for (j = 0; j < ost->forced_kf_count; j++)
3083                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3084                                                          AV_TIME_BASE_Q,
3085                                                          codec->time_base);
3086
3087                 codec->width  = ost->filter->filter->inputs[0]->w;
3088                 codec->height = ost->filter->filter->inputs[0]->h;
3089                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3090                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3091                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3092                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3093                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3094
3095                 if (codec->width   != icodec->width  ||
3096                     codec->height  != icodec->height ||
3097                     codec->pix_fmt != icodec->pix_fmt) {
3098                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3099                 }
3100
3101                 break;
3102             case AVMEDIA_TYPE_SUBTITLE:
3103                 codec->time_base = (AVRational){1, 1000};
3104                 break;
3105             default:
3106                 abort();
3107                 break;
3108             }
3109             /* two pass mode */
3110             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3111                 char logfilename[1024];
3112                 FILE *f;
3113
3114                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3115                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3116                          i);
3117                 if (!strcmp(ost->enc->name, "libx264")) {
3118                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3119                 } else {
3120                     if (codec->flags & CODEC_FLAG_PASS2) {
3121                         char  *logbuffer;
3122                         size_t logbuffer_size;
3123                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3124                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3125                                 logfilename);
3126                             exit_program(1);
3127                         }
3128                         codec->stats_in = logbuffer;
3129                     }
3130                     if (codec->flags & CODEC_FLAG_PASS1) {
3131                         f = fopen(logfilename, "wb");
3132                         if (!f) {
3133                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3134                                 logfilename, strerror(errno));
3135                             exit_program(1);
3136                         }
3137                         ost->logfile = f;
3138                     }
3139                 }
3140             }
3141         }
3142     }
3143
3144     /* open each encoder */
3145     for (i = 0; i < nb_output_streams; i++) {
3146         ost = output_streams[i];
3147         if (ost->encoding_needed) {
3148             AVCodec      *codec = ost->enc;
3149             AVCodecContext *dec = NULL;
3150
3151             if ((ist = get_input_stream(ost)))
3152                 dec = ist->st->codec;
3153             if (dec && dec->subtitle_header) {
3154                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3155                 if (!ost->st->codec->subtitle_header) {
3156                     ret = AVERROR(ENOMEM);
3157                     goto dump_format;
3158                 }
3159                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3160                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3161             }
3162             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3163                 av_dict_set(&ost->opts, "threads", "auto", 0);
3164             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3165                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3166                         ost->file_index, ost->index);
3167                 ret = AVERROR(EINVAL);
3168                 goto dump_format;
3169             }
3170             assert_codec_experimental(ost->st->codec, 1);
3171             assert_avoptions(ost->opts);
3172             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3173                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3174                                              " It takes bits/s as argument, not kbits/s\n");
3175             extra_size += ost->st->codec->extradata_size;
3176
3177             if (ost->st->codec->me_threshold)
3178                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3179         }
3180     }
3181
3182     /* init input streams */
3183     for (i = 0; i < nb_input_streams; i++)
3184         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3185             goto dump_format;
3186
3187     /* discard unused programs */
3188     for (i = 0; i < nb_input_files; i++) {
3189         InputFile *ifile = input_files[i];
3190         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3191             AVProgram *p = ifile->ctx->programs[j];
3192             int discard  = AVDISCARD_ALL;
3193
3194             for (k = 0; k < p->nb_stream_indexes; k++)
3195                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3196                     discard = AVDISCARD_DEFAULT;
3197                     break;
3198                 }
3199             p->discard = discard;
3200         }
3201     }
3202
3203     /* open files and write file headers */
3204     for (i = 0; i < nb_output_files; i++) {
3205         oc = output_files[i]->ctx;
3206         oc->interrupt_callback = int_cb;
3207         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3208             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3209             ret = AVERROR(EINVAL);
3210             goto dump_format;
3211         }
3212 //         assert_avoptions(output_files[i]->opts);
3213         if (strcmp(oc->oformat->name, "rtp")) {
3214             want_sdp = 0;
3215         }
3216     }
3217
3218  dump_format:
3219     /* dump the file output parameters - cannot be done before in case
3220        of stream copy */
3221     for (i = 0; i < nb_output_files; i++) {
3222         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3223     }
3224
3225     /* dump the stream mapping */
3226     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3227     for (i = 0; i < nb_input_streams; i++) {
3228         ist = input_streams[i];
3229
3230         for (j = 0; j < ist->nb_filters; j++) {
3231             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3232             if (ist->filters[j]->graph->graph_desc) {
3233                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3234                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3235                        link->dst->filter->name);
3236                 if (link->dst->input_count > 1)
3237                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3238                 if (nb_filtergraphs > 1)
3239                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3240                 av_log(NULL, AV_LOG_INFO, "\n");
3241             }
3242         }
3243     }
3244
3245     for (i = 0; i < nb_output_streams; i++) {
3246         ost = output_streams[i];
3247
3248         if (ost->attachment_filename) {
3249             /* an attached file */
3250             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3251                    ost->attachment_filename, ost->file_index, ost->index);
3252             continue;
3253         }
3254
3255         if (ost->filter && ost->filter->graph->graph_desc) {
3256             /* output from a complex graph */
3257             AVFilterLink *link = ost->filter->filter->inputs[0];
3258             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3259             if (link->src->output_count > 1)
3260                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3261             if (nb_filtergraphs > 1)
3262                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3263
3264             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3265                    ost->index, ost->enc ? ost->enc->name : "?");
3266             continue;
3267         }
3268
3269         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3270                input_streams[ost->source_index]->file_index,
3271                input_streams[ost->source_index]->st->index,
3272                ost->file_index,
3273                ost->index);
3274         if (ost->sync_ist != input_streams[ost->source_index])
3275             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3276                    ost->sync_ist->file_index,
3277                    ost->sync_ist->st->index);
3278         if (ost->stream_copy)
3279             av_log(NULL, AV_LOG_INFO, " (copy)");
3280         else
3281             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3282                    input_streams[ost->source_index]->dec->name : "?",
3283                    ost->enc ? ost->enc->name : "?");
3284         av_log(NULL, AV_LOG_INFO, "\n");
3285     }
3286
3287     if (ret) {
3288         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3289         return ret;
3290     }
3291
3292     if (want_sdp) {
3293         print_sdp();
3294     }
3295
3296     return 0;
3297 }
3298
3299 /*
3300  * The following code is the main loop of the file converter
3301  */
3302 static int transcode(void)
3303 {
3304     int ret, i;
3305     AVFormatContext *is, *os;
3306     OutputStream *ost;
3307     InputStream *ist;
3308     uint8_t *no_packet;
3309     int no_packet_count = 0;
3310     int64_t timer_start;
3311     int key;
3312
3313     if (!(no_packet = av_mallocz(nb_input_files)))
3314         exit_program(1);
3315
3316     ret = transcode_init();
3317     if (ret < 0)
3318         goto fail;
3319
3320     if (!using_stdin) {
3321         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3322     }
3323
3324     timer_start = av_gettime();
3325
3326     for (; received_sigterm == 0;) {
3327         int file_index, ist_index, past_recording_time = 1;
3328         AVPacket pkt;
3329         int64_t ipts_min;
3330         int64_t cur_time= av_gettime();
3331
3332         ipts_min = INT64_MAX;
3333         /* if 'q' pressed, exits */
3334         if (!using_stdin) {
3335             static int64_t last_time;
3336             if (received_nb_signals)
3337                 break;
3338             /* read_key() returns 0 on EOF */
3339             if(cur_time - last_time >= 100000 && !run_as_daemon){
3340                 key =  read_key();
3341                 last_time = cur_time;
3342             }else
3343                 key = -1;
3344             if (key == 'q')
3345                 break;
3346             if (key == '+') av_log_set_level(av_log_get_level()+10);
3347             if (key == '-') av_log_set_level(av_log_get_level()-10);
3348             if (key == 's') qp_hist     ^= 1;
3349             if (key == 'h'){
3350                 if (do_hex_dump){
3351                     do_hex_dump = do_pkt_dump = 0;
3352                 } else if(do_pkt_dump){
3353                     do_hex_dump = 1;
3354                 } else
3355                     do_pkt_dump = 1;
3356                 av_log_set_level(AV_LOG_DEBUG);
3357             }
3358             if (key == 'c' || key == 'C'){
3359                 char buf[4096], target[64], command[256], arg[256] = {0};
3360                 double time;
3361                 int k, n = 0;
3362                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3363                 i = 0;
3364                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3365                     if (k > 0)
3366                         buf[i++] = k;
3367                 buf[i] = 0;
3368                 if (k > 0 &&
3369                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3370                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3371                            target, time, command, arg);
3372                     for (i = 0; i < nb_filtergraphs; i++) {
3373                         FilterGraph *fg = filtergraphs[i];
3374                         if (fg->graph) {
3375                             if (time < 0) {
3376                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3377                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3378                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3379                             } else {
3380                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3381                             }
3382                         }
3383                     }
3384                 } else {
3385                     av_log(NULL, AV_LOG_ERROR,
3386                            "Parse error, at least 3 arguments were expected, "
3387                            "only %d given in string '%s'\n", n, buf);
3388                 }
3389             }
3390             if (key == 'd' || key == 'D'){
3391                 int debug=0;
3392                 if(key == 'D') {
3393                     debug = input_streams[0]->st->codec->debug<<1;
3394                     if(!debug) debug = 1;
3395                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3396                         debug += debug;
3397                 }else
3398                     if(scanf("%d", &debug)!=1)
3399                         fprintf(stderr,"error parsing debug value\n");
3400                 for(i=0;i<nb_input_streams;i++) {
3401                     input_streams[i]->st->codec->debug = debug;
3402                 }
3403                 for(i=0;i<nb_output_streams;i++) {
3404                     ost = output_streams[i];
3405                     ost->st->codec->debug = debug;
3406                 }
3407                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3408                 fprintf(stderr,"debug=%d\n", debug);
3409             }
3410             if (key == '?'){
3411                 fprintf(stderr, "key    function\n"
3412                                 "?      show this help\n"
3413                                 "+      increase verbosity\n"
3414                                 "-      decrease verbosity\n"
3415                                 "c      Send command to filtergraph\n"
3416                                 "D      cycle through available debug modes\n"
3417                                 "h      dump packets/hex press to cycle through the 3 states\n"
3418                                 "q      quit\n"
3419                                 "s      Show QP histogram\n"
3420                 );
3421             }
3422         }
3423
3424         /* check if there's any stream where output is still needed */
3425         for (i = 0; i < nb_output_streams; i++) {
3426             OutputFile *of;
3427             ost = output_streams[i];
3428             of  = output_files[ost->file_index];
3429             os  = output_files[ost->file_index]->ctx;
3430             if (ost->is_past_recording_time ||
3431                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3432                 continue;
3433             if (ost->frame_number >= ost->max_frames) {
3434                 int j;
3435                 for (j = 0; j < of->ctx->nb_streams; j++)
3436                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3437                 continue;
3438             }
3439             past_recording_time = 0;
3440         }
3441         if (past_recording_time)
3442             break;
3443
3444         /* select the stream that we must read now by looking at the
3445            smallest output pts */
3446         file_index = -1;
3447         for (i = 0; i < nb_input_streams; i++) {
3448             int64_t ipts;
3449             ist = input_streams[i];
3450             ipts = ist->pts;
3451             if (ist->discard || no_packet[ist->file_index])
3452                 continue;
3453             if (!input_files[ist->file_index]->eof_reached) {
3454                 if (ipts < ipts_min) {
3455                     ipts_min = ipts;
3456                     file_index = ist->file_index;
3457                 }
3458             }
3459         }
3460         /* if none, if is finished */
3461         if (file_index < 0) {
3462             if (no_packet_count) {
3463                 no_packet_count = 0;
3464                 memset(no_packet, 0, nb_input_files);
3465                 usleep(10000);
3466                 continue;
3467             }
3468             break;
3469         }
3470
3471         /* read a frame from it and output it in the fifo */
3472         is  = input_files[file_index]->ctx;
3473         ret = av_read_frame(is, &pkt);
3474         if (ret == AVERROR(EAGAIN)) {
3475             no_packet[file_index] = 1;
3476             no_packet_count++;
3477             continue;
3478         }
3479         if (ret < 0) {
3480             input_files[file_index]->eof_reached = 1;
3481
3482             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3483                 ist = input_streams[input_files[file_index]->ist_index + i];
3484                 if (ist->decoding_needed)
3485                     output_packet(ist, NULL);
3486             }
3487
3488             if (opt_shortest)
3489                 break;
3490             else
3491                 continue;
3492         }
3493
3494         no_packet_count = 0;
3495         memset(no_packet, 0, nb_input_files);
3496
3497         if (do_pkt_dump) {
3498             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3499                              is->streams[pkt.stream_index]);
3500         }
3501         /* the following test is needed in case new streams appear
3502            dynamically in stream : we ignore them */
3503         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3504             goto discard_packet;
3505         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3506         ist = input_streams[ist_index];
3507         if (ist->discard)
3508             goto discard_packet;
3509
3510         if (pkt.dts != AV_NOPTS_VALUE)
3511             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3512         if (pkt.pts != AV_NOPTS_VALUE)
3513             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3514
3515         if (pkt.pts != AV_NOPTS_VALUE)
3516             pkt.pts *= ist->ts_scale;
3517         if (pkt.dts != AV_NOPTS_VALUE)
3518             pkt.dts *= ist->ts_scale;
3519
3520         if (debug_ts) {
3521             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3522                     "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
3523                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3524                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3525                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3526                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3527                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3528                     input_files[ist->file_index]->ts_offset);
3529         }
3530
3531         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3532             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3533             int64_t delta   = pkt_dts - ist->next_dts;
3534             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3535             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3536                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3537                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3538                 pkt_dts+1<ist->pts){
3539                 input_files[ist->file_index]->ts_offset -= delta;
3540                 av_log(NULL, AV_LOG_DEBUG,
3541                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3542                        delta, input_files[ist->file_index]->ts_offset);
3543                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3544                 if (pkt.pts != AV_NOPTS_VALUE)
3545                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3546             }
3547             } else {
3548                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3549                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3550                      pkt_dts+1<ist->pts){
3551                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3552                     pkt.dts = AV_NOPTS_VALUE;
3553                 }
3554                 if (pkt.pts != AV_NOPTS_VALUE){
3555                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3556                     delta   = pkt_pts - ist->next_dts;
3557                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3558                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3559                         pkt_pts+1<ist->pts) {
3560                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3561                         pkt.pts = AV_NOPTS_VALUE;
3562                     }
3563                 }
3564             }
3565         }
3566
3567         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3568         if (output_packet(ist, &pkt) < 0 ||
3569             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3570             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3571                    ist->file_index, ist->st->index);
3572             if (exit_on_error)
3573                 exit_program(1);
3574             av_free_packet(&pkt);
3575             continue;
3576         }
3577
3578     discard_packet:
3579         av_free_packet(&pkt);
3580
3581         /* dump report by using the output first video and audio streams */
3582         print_report(0, timer_start, cur_time);
3583     }
3584
3585     /* at the end of stream, we must flush the decoder buffers */
3586     for (i = 0; i < nb_input_streams; i++) {
3587         ist = input_streams[i];
3588         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3589             output_packet(ist, NULL);
3590         }
3591     }
3592     poll_filters();
3593     flush_encoders();
3594
3595     term_exit();
3596
3597     /* write the trailer if needed and close file */
3598     for (i = 0; i < nb_output_files; i++) {
3599         os = output_files[i]->ctx;
3600         av_write_trailer(os);
3601     }
3602
3603     /* dump report by using the first video and audio streams */
3604     print_report(1, timer_start, av_gettime());
3605
3606     /* close each encoder */
3607     for (i = 0; i < nb_output_streams; i++) {
3608         ost = output_streams[i];
3609         if (ost->encoding_needed) {
3610             av_freep(&ost->st->codec->stats_in);
3611             avcodec_close(ost->st->codec);
3612         }
3613     }
3614
3615     /* close each decoder */
3616     for (i = 0; i < nb_input_streams; i++) {
3617         ist = input_streams[i];
3618         if (ist->decoding_needed) {
3619             avcodec_close(ist->st->codec);
3620         }
3621     }
3622
3623     /* finished ! */
3624     ret = 0;
3625
3626  fail:
3627     av_freep(&no_packet);
3628
3629     if (output_streams) {
3630         for (i = 0; i < nb_output_streams; i++) {
3631             ost = output_streams[i];
3632             if (ost) {
3633                 if (ost->stream_copy)
3634                     av_freep(&ost->st->codec->extradata);
3635                 if (ost->logfile) {
3636                     fclose(ost->logfile);
3637                     ost->logfile = NULL;
3638                 }
3639                 av_freep(&ost->st->codec->subtitle_header);
3640               &nb