860dad7ea4968f9526531f9ee828cb4486f88d7f
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88 #include <time.h>
89
90 #include "cmdutils.h"
91
92 #include "libavutil/avassert.h"
93
94 #define VSYNC_AUTO       -1
95 #define VSYNC_PASSTHROUGH 0
96 #define VSYNC_CFR         1
97 #define VSYNC_VFR         2
98 #define VSYNC_DROP        0xff
99
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179 } 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     /* audio only */
298     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
299     int audio_channels_mapped;           /* number of channels in audio_channels_map */
300
301     FILE *logfile;
302
303     OutputFilter *filter;
304     char *avfilter;
305
306     int64_t sws_flags;
307     int64_t swr_dither_method;
308     double swr_dither_scale;
309     AVDictionary *opts;
310     int is_past_recording_time;
311     int stream_copy;
312     const char *attachment_filename;
313     int copy_initial_nonkeyframes;
314
315     int keep_pix_fmt;
316 } OutputStream;
317
318
319 #if HAVE_TERMIOS_H
320
321 /* init terminal so that we can grab keys */
322 static struct termios oldtty;
323 static int restore_tty;
324 #endif
325
326 typedef struct OutputFile {
327     AVFormatContext *ctx;
328     AVDictionary *opts;
329     int ost_index;       /* index of the first stream in output_streams */
330     int64_t recording_time; /* desired length of the resulting file in microseconds */
331     int64_t start_time;     /* start time in microseconds */
332     uint64_t limit_filesize; /* filesize limit expressed in bytes */
333 } OutputFile;
334
335 static InputStream **input_streams = NULL;
336 static int        nb_input_streams = 0;
337 static InputFile   **input_files   = NULL;
338 static int        nb_input_files   = 0;
339
340 static OutputStream **output_streams = NULL;
341 static int         nb_output_streams = 0;
342 static OutputFile   **output_files   = NULL;
343 static int         nb_output_files   = 0;
344
345 static FilterGraph **filtergraphs;
346 int               nb_filtergraphs;
347
348 typedef struct OptionsContext {
349     /* input/output options */
350     int64_t start_time;
351     const char *format;
352
353     SpecifierOpt *codec_names;
354     int        nb_codec_names;
355     SpecifierOpt *audio_channels;
356     int        nb_audio_channels;
357     SpecifierOpt *audio_sample_rate;
358     int        nb_audio_sample_rate;
359     SpecifierOpt *frame_rates;
360     int        nb_frame_rates;
361     SpecifierOpt *frame_sizes;
362     int        nb_frame_sizes;
363     SpecifierOpt *frame_pix_fmts;
364     int        nb_frame_pix_fmts;
365
366     /* input options */
367     int64_t input_ts_offset;
368     int rate_emu;
369
370     SpecifierOpt *ts_scale;
371     int        nb_ts_scale;
372     SpecifierOpt *dump_attachment;
373     int        nb_dump_attachment;
374
375     /* output options */
376     StreamMap *stream_maps;
377     int     nb_stream_maps;
378     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
379     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
380     int metadata_global_manual;
381     int metadata_streams_manual;
382     int metadata_chapters_manual;
383     const char **attachments;
384     int       nb_attachments;
385
386     int chapters_input_file;
387
388     int64_t recording_time;
389     uint64_t limit_filesize;
390     float mux_preload;
391     float mux_max_delay;
392
393     int video_disable;
394     int audio_disable;
395     int subtitle_disable;
396     int data_disable;
397
398     /* indexed by output file stream index */
399     int   *streamid_map;
400     int nb_streamid_map;
401
402     SpecifierOpt *metadata;
403     int        nb_metadata;
404     SpecifierOpt *max_frames;
405     int        nb_max_frames;
406     SpecifierOpt *bitstream_filters;
407     int        nb_bitstream_filters;
408     SpecifierOpt *codec_tags;
409     int        nb_codec_tags;
410     SpecifierOpt *sample_fmts;
411     int        nb_sample_fmts;
412     SpecifierOpt *qscale;
413     int        nb_qscale;
414     SpecifierOpt *forced_key_frames;
415     int        nb_forced_key_frames;
416     SpecifierOpt *force_fps;
417     int        nb_force_fps;
418     SpecifierOpt *frame_aspect_ratios;
419     int        nb_frame_aspect_ratios;
420     SpecifierOpt *rc_overrides;
421     int        nb_rc_overrides;
422     SpecifierOpt *intra_matrices;
423     int        nb_intra_matrices;
424     SpecifierOpt *inter_matrices;
425     int        nb_inter_matrices;
426     SpecifierOpt *top_field_first;
427     int        nb_top_field_first;
428     SpecifierOpt *metadata_map;
429     int        nb_metadata_map;
430     SpecifierOpt *presets;
431     int        nb_presets;
432     SpecifierOpt *copy_initial_nonkeyframes;
433     int        nb_copy_initial_nonkeyframes;
434     SpecifierOpt *filters;
435     int        nb_filters;
436 } OptionsContext;
437
438 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
439 {\
440     int i, ret;\
441     for (i = 0; i < o->nb_ ## name; i++) {\
442         char *spec = o->name[i].specifier;\
443         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
444             outvar = o->name[i].u.type;\
445         else if (ret < 0)\
446             exit_program(1);\
447     }\
448 }
449
450 static int64_t getutime(void)
451 {
452 #if HAVE_GETRUSAGE
453     struct rusage rusage;
454
455     getrusage(RUSAGE_SELF, &rusage);
456     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
457 #elif HAVE_GETPROCESSTIMES
458     HANDLE proc;
459     FILETIME c, e, k, u;
460     proc = GetCurrentProcess();
461     GetProcessTimes(proc, &c, &e, &k, &u);
462     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
463 #else
464     return av_gettime();
465 #endif
466 }
467
468 static void update_benchmark(const char *fmt, ...)
469 {
470     if (do_benchmark_all) {
471         int64_t t = getutime();
472         va_list va;
473         char buf[1024];
474
475         if (fmt) {
476             va_start(va, fmt);
477             vsnprintf(buf, sizeof(buf), fmt, va);
478             va_end(va);
479             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
480         }
481         current_time = t;
482     }
483 }
484
485 static void reset_options(OptionsContext *o, int is_input)
486 {
487     const OptionDef *po = options;
488     OptionsContext bak= *o;
489     int i;
490
491     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
492     while (po->name) {
493         void *dst = (uint8_t*)o + po->u.off;
494
495         if (po->flags & OPT_SPEC) {
496             SpecifierOpt **so = dst;
497             int i, *count = (int*)(so + 1);
498             for (i = 0; i < *count; i++) {
499                 av_freep(&(*so)[i].specifier);
500                 if (po->flags & OPT_STRING)
501                     av_freep(&(*so)[i].u.str);
502             }
503             av_freep(so);
504             *count = 0;
505         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
506             av_freep(dst);
507         po++;
508     }
509
510     for (i = 0; i < o->nb_stream_maps; i++)
511         av_freep(&o->stream_maps[i].linklabel);
512     av_freep(&o->stream_maps);
513     av_freep(&o->audio_channel_maps);
514     av_freep(&o->streamid_map);
515
516     memset(o, 0, sizeof(*o));
517
518     if(is_input) o->recording_time = bak.recording_time;
519     else         o->recording_time = INT64_MAX;
520     o->mux_max_delay  = 0.7;
521     o->limit_filesize = UINT64_MAX;
522     o->chapters_input_file = INT_MAX;
523
524     uninit_opts();
525     init_opts();
526 }
527
528 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
529 {
530     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
531     int i, ret;
532     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
533     int h_chroma_shift, v_chroma_shift;
534     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
535     int w = s->width, h = s->height;
536
537     if (!buf)
538         return AVERROR(ENOMEM);
539
540     avcodec_align_dimensions(s, &w, &h);
541
542     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
543         w += 2*edge;
544         h += 2*edge;
545     }
546
547     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
548                               s->pix_fmt, 32)) < 0) {
549         av_freep(&buf);
550         return ret;
551     }
552     /* XXX this shouldn't be needed, but some tests break without this line
553      * those decoders are buggy and need to be fixed.
554      * the following tests fail:
555      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
556      */
557     memset(buf->base[0], 128, ret);
558
559     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
560     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
561         const int h_shift = i==0 ? 0 : h_chroma_shift;
562         const int v_shift = i==0 ? 0 : v_chroma_shift;
563         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
564             buf->data[i] = buf->base[i];
565         else
566             buf->data[i] = buf->base[i] +
567                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
568                                    (pixel_size*edge >> h_shift), 32);
569     }
570     buf->w       = s->width;
571     buf->h       = s->height;
572     buf->pix_fmt = s->pix_fmt;
573     buf->ist     = ist;
574
575     *pbuf = buf;
576     return 0;
577 }
578
579 static void free_buffer_pool(InputStream *ist)
580 {
581     FrameBuffer *buf = ist->buffer_pool;
582     while (buf) {
583         ist->buffer_pool = buf->next;
584         av_freep(&buf->base[0]);
585         av_free(buf);
586         buf = ist->buffer_pool;
587     }
588 }
589
590 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
591 {
592     av_assert0(buf->refcount > 0);
593     buf->refcount--;
594     if (!buf->refcount) {
595         FrameBuffer *tmp;
596         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
597             av_assert1(tmp != buf);
598         buf->next = ist->buffer_pool;
599         ist->buffer_pool = buf;
600     }
601 }
602
603 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
604 {
605     InputStream *ist = s->opaque;
606     FrameBuffer *buf;
607     int ret, i;
608
609     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
610         return -1;
611
612     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
613         return ret;
614
615     buf              = ist->buffer_pool;
616     ist->buffer_pool = buf->next;
617     buf->next        = NULL;
618     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
619         av_freep(&buf->base[0]);
620         av_free(buf);
621         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
622             return ret;
623     }
624     av_assert0(!buf->refcount);
625     buf->refcount++;
626
627     frame->opaque        = buf;
628     frame->type          = FF_BUFFER_TYPE_USER;
629     frame->extended_data = frame->data;
630     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
631     frame->width         = buf->w;
632     frame->height        = buf->h;
633     frame->format        = buf->pix_fmt;
634     frame->sample_aspect_ratio = s->sample_aspect_ratio;
635
636     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
637         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
638         frame->data[i]     = buf->data[i];
639         frame->linesize[i] = buf->linesize[i];
640     }
641
642     return 0;
643 }
644
645 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
646 {
647     InputStream *ist = s->opaque;
648     FrameBuffer *buf = frame->opaque;
649     int i;
650
651     if(frame->type!=FF_BUFFER_TYPE_USER)
652         return avcodec_default_release_buffer(s, frame);
653
654     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
655         frame->data[i] = NULL;
656
657     unref_buffer(ist, buf);
658 }
659
660 static void filter_release_buffer(AVFilterBuffer *fb)
661 {
662     FrameBuffer *buf = fb->priv;
663     av_free(fb);
664     unref_buffer(buf->ist, buf);
665 }
666
667 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
668 {
669     if (codec && codec->pix_fmts) {
670         const enum PixelFormat *p = codec->pix_fmts;
671         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
672         enum PixelFormat best= PIX_FMT_NONE;
673         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
674             if (st->codec->codec_id == CODEC_ID_MJPEG) {
675                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
676             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
677                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
678                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
679             }
680         }
681         for (; *p != PIX_FMT_NONE; p++) {
682             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
683             if (*p == target)
684                 break;
685         }
686         if (*p == PIX_FMT_NONE) {
687             if (target != PIX_FMT_NONE)
688                 av_log(NULL, AV_LOG_WARNING,
689                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
690                        av_pix_fmt_descriptors[target].name,
691                        codec->name,
692                        av_pix_fmt_descriptors[best].name);
693             return best;
694         }
695     }
696     return target;
697 }
698
699 static char *choose_pix_fmts(OutputStream *ost)
700 {
701      if (ost->keep_pix_fmt) {
702         if (ost->filter)
703             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
704                                             AVFILTER_AUTO_CONVERT_NONE);
705         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
706             return NULL;
707         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
708     }
709     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
710         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
711     } else if (ost->enc->pix_fmts) {
712         const enum PixelFormat *p;
713         AVIOContext *s = NULL;
714         uint8_t *ret;
715         int len;
716
717         if (avio_open_dyn_buf(&s) < 0)
718             exit_program(1);
719
720         p = ost->enc->pix_fmts;
721         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
722             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
724             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
725                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
726                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
727             }
728         }
729
730         for (; *p != PIX_FMT_NONE; p++) {
731             const char *name = av_get_pix_fmt_name(*p);
732             avio_printf(s, "%s:", name);
733         }
734         len = avio_close_dyn_buf(s, &ret);
735         ret[len - 1] = 0;
736         return ret;
737     } else
738         return NULL;
739 }
740
741 /**
742  * Define a function for building a string containing a list of
743  * allowed formats,
744  */
745 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
746 static char *choose_ ## var ## s(OutputStream *ost)                             \
747 {                                                                               \
748     if (ost->st->codec->var != none) {                                          \
749         get_name(ost->st->codec->var);                                          \
750         return av_strdup(name);                                                 \
751     } else if (ost->enc->supported_list) {                                      \
752         const type *p;                                                          \
753         AVIOContext *s = NULL;                                                  \
754         uint8_t *ret;                                                           \
755         int len;                                                                \
756                                                                                 \
757         if (avio_open_dyn_buf(&s) < 0)                                          \
758             exit_program(1);                                                    \
759                                                                                 \
760         for (p = ost->enc->supported_list; *p != none; p++) {                   \
761             get_name(*p);                                                       \
762             avio_printf(s, "%s" separator, name);                               \
763         }                                                                       \
764         len = avio_close_dyn_buf(s, &ret);                                      \
765         ret[len - 1] = 0;                                                       \
766         return ret;                                                             \
767     } else                                                                      \
768         return NULL;                                                            \
769 }
770
771 #define GET_PIX_FMT_NAME(pix_fmt)\
772     const char *name = av_get_pix_fmt_name(pix_fmt);
773
774 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
775 //                   GET_PIX_FMT_NAME, ":")
776
777 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
778     const char *name = av_get_sample_fmt_name(sample_fmt)
779
780 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
781                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
782
783 #define GET_SAMPLE_RATE_NAME(rate)\
784     char name[16];\
785     snprintf(name, sizeof(name), "%d", rate);
786
787 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
788                   GET_SAMPLE_RATE_NAME, ",")
789
790 #define GET_CH_LAYOUT_NAME(ch_layout)\
791     char name[16];\
792     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
793
794 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
795                   GET_CH_LAYOUT_NAME, ",")
796
797 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
798                                    AVFilterContext **out_filter)
799 {
800     InputStream  *ist = fg->inputs[0]->ist;
801     OutputStream *ost = fg->outputs[0]->ost;
802     AVCodecContext *codec  = ost->st->codec;
803     AVCodecContext *icodec = ist->st->codec;
804     char *sample_fmts, *sample_rates, *channel_layouts;
805     char args[256];
806     int ret;
807
808     avfilter_graph_free(&fg->graph);
809     if (!(fg->graph = avfilter_graph_alloc()))
810         return AVERROR(ENOMEM);
811
812     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
813              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
814              ist->st->time_base.den, icodec->sample_rate,
815              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
816     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
817                                        avfilter_get_by_name("abuffer"),
818                                        "src", args, NULL, fg->graph);
819     if (ret < 0)
820         return ret;
821
822     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
823                                        avfilter_get_by_name("abuffersink_old"),
824                                        "out", NULL, NULL, fg->graph);
825     if (ret < 0)
826         return ret;
827
828     *in_filter  = fg->inputs[0]->filter;
829     *out_filter = fg->outputs[0]->filter;
830
831     if (codec->channels && !codec->channel_layout)
832         codec->channel_layout = av_get_default_channel_layout(codec->channels);
833
834     sample_fmts     = choose_sample_fmts(ost);
835     sample_rates    = choose_sample_rates(ost);
836     channel_layouts = choose_channel_layouts(ost);
837     if (sample_fmts || sample_rates || channel_layouts) {
838         AVFilterContext *format;
839         char args[256];
840         int len = 0;
841
842         if (sample_fmts)
843             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
844                             sample_fmts);
845         if (sample_rates)
846             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
847                             sample_rates);
848         if (channel_layouts)
849             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
850                             channel_layouts);
851         args[len - 1] = 0;
852
853         av_freep(&sample_fmts);
854         av_freep(&sample_rates);
855         av_freep(&channel_layouts);
856
857         ret = avfilter_graph_create_filter(&format,
858                                            avfilter_get_by_name("aformat"),
859                                            "aformat", args, NULL, fg->graph);
860         if (ret < 0)
861             return ret;
862
863         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
864         if (ret < 0)
865             return ret;
866
867         *out_filter = format;
868     }
869
870     if (audio_sync_method > 0) {
871         AVFilterContext *aswr;
872         char args[256] = {0};
873
874         av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
875
876         if (audio_sync_method > 1)
877             av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)icodec->sample_rate);
878
879         av_log(NULL, AV_LOG_INFO, "-async %d is forwarded to lavfi similarly to -af aresample=%s\n", audio_sync_method, args);
880
881         ret = avfilter_graph_create_filter(&aswr, avfilter_get_by_name("aresample"),
882                                            "aresample", args, NULL, fg->graph);
883         if (ret < 0)
884             return ret;
885
886         ret = avfilter_link(*in_filter, 0, aswr, 0);
887         if (ret < 0)
888             return ret;
889
890         *in_filter = aswr;
891     }
892
893 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
894     AVFilterContext *filt_ctx;                                              \
895                                                                             \
896     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
897            "similarly to -af " filter_name "=%s.\n", arg);                  \
898                                                                             \
899     ret = avfilter_graph_create_filter(&filt_ctx,                           \
900                                        avfilter_get_by_name(filter_name),   \
901                                        filter_name, arg, NULL, fg->graph);  \
902     if (ret < 0)                                                            \
903         return ret;                                                         \
904                                                                             \
905     ret = avfilter_link(*in_filter, 0, filt_ctx, 0);                        \
906     if (ret < 0)                                                            \
907         return ret;                                                         \
908                                                                             \
909     *in_filter = filt_ctx;                                                  \
910 } while (0)
911
912     if (ost->audio_channels_mapped) {
913         int i;
914         AVBPrint pan_buf;
915
916         av_bprint_init(&pan_buf, 256, 8192);
917         av_bprintf(&pan_buf, "0x%"PRIx64,
918                    av_get_default_channel_layout(ost->audio_channels_mapped));
919         for (i = 0; i < ost->audio_channels_mapped; i++)
920             if (ost->audio_channels_map[i] != -1)
921                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
922
923         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
924         av_bprint_finalize(&pan_buf, NULL);
925     }
926
927     if (audio_volume != 256) {
928         char args[256];
929
930         snprintf(args, sizeof(args), "%lf", audio_volume / 256.);
931         AUTO_INSERT_FILTER("-vol", "volume", args);
932     }
933
934     return 0;
935 }
936
937 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
938                                    AVFilterContext **out_filter)
939 {
940     InputStream  *ist = fg->inputs[0]->ist;
941     OutputStream *ost = fg->outputs[0]->ost;
942     AVFilterContext *filter;
943     AVCodecContext *codec = ost->st->codec;
944     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
945     char *pix_fmts;
946     AVRational sample_aspect_ratio;
947     char args[255];
948     int ret;
949
950     if (ist->st->sample_aspect_ratio.num) {
951         sample_aspect_ratio = ist->st->sample_aspect_ratio;
952     } else
953         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
954
955     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
956              ist->st->codec->height, ist->st->codec->pix_fmt,
957              1, AV_TIME_BASE,
958              sample_aspect_ratio.num, sample_aspect_ratio.den,
959              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
960
961     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
962                                        avfilter_get_by_name("buffer"),
963                                        "src", args, NULL, fg->graph);
964     if (ret < 0)
965         return ret;
966
967 #if FF_API_OLD_VSINK_API
968     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
969                                        avfilter_get_by_name("buffersink"),
970                                        "out", NULL, NULL, fg->graph);
971 #else
972     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
973                                        avfilter_get_by_name("buffersink"),
974                                        "out", NULL, buffersink_params, fg->graph);
975 #endif
976     av_freep(&buffersink_params);
977
978     if (ret < 0)
979         return ret;
980     *in_filter  = fg->inputs[0]->filter;
981     *out_filter = fg->outputs[0]->filter;
982
983     if (codec->width || codec->height) {
984         snprintf(args, 255, "%d:%d:flags=0x%X",
985                  codec->width,
986                  codec->height,
987                  (unsigned)ost->sws_flags);
988         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
989                                                 NULL, args, NULL, fg->graph)) < 0)
990             return ret;
991         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
992             return ret;
993         *in_filter = filter;
994     }
995
996     if ((pix_fmts = choose_pix_fmts(ost))) {
997         if ((ret = avfilter_graph_create_filter(&filter,
998                                                 avfilter_get_by_name("format"),
999                                                 "format", pix_fmts, NULL,
1000                                                 fg->graph)) < 0)
1001             return ret;
1002         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
1003             return ret;
1004
1005         *out_filter = filter;
1006         av_freep(&pix_fmts);
1007     }
1008
1009     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
1010     fg->graph->scale_sws_opts = av_strdup(args);
1011
1012     return 0;
1013 }
1014
1015 static int configure_simple_filtergraph(FilterGraph *fg)
1016 {
1017     OutputStream *ost = fg->outputs[0]->ost;
1018     AVFilterContext *in_filter, *out_filter;
1019     int ret;
1020
1021     avfilter_graph_free(&fg->graph);
1022     fg->graph = avfilter_graph_alloc();
1023     if (!fg->graph)
1024         return AVERROR(ENOMEM);
1025
1026     switch (ost->st->codec->codec_type) {
1027     case AVMEDIA_TYPE_VIDEO:
1028         ret = configure_video_filters(fg, &in_filter, &out_filter);
1029         break;
1030     case AVMEDIA_TYPE_AUDIO:
1031         ret = configure_audio_filters(fg, &in_filter, &out_filter);
1032         break;
1033     default: av_assert0(0);
1034     }
1035     if (ret < 0)
1036         return ret;
1037
1038     if (ost->avfilter) {
1039         AVFilterInOut *outputs = avfilter_inout_alloc();
1040         AVFilterInOut *inputs  = avfilter_inout_alloc();
1041
1042         outputs->name    = av_strdup("in");
1043         outputs->filter_ctx = in_filter;
1044         outputs->pad_idx = 0;
1045         outputs->next    = NULL;
1046
1047         inputs->name    = av_strdup("out");
1048         inputs->filter_ctx = out_filter;
1049         inputs->pad_idx = 0;
1050         inputs->next    = NULL;
1051
1052         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
1053             return ret;
1054         av_freep(&ost->avfilter);
1055     } else {
1056         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
1057             return ret;
1058     }
1059
1060     if (ost->keep_pix_fmt)
1061         avfilter_graph_set_auto_convert(fg->graph,
1062                                         AVFILTER_AUTO_CONVERT_NONE);
1063
1064     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1065         return ret;
1066
1067     ost->filter = fg->outputs[0];
1068
1069     return 0;
1070 }
1071
1072 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1073 {
1074     FilterGraph *fg = av_mallocz(sizeof(*fg));
1075
1076     if (!fg)
1077         exit_program(1);
1078     fg->index = nb_filtergraphs;
1079
1080     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1081                              fg->nb_outputs + 1);
1082     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1083         exit_program(1);
1084     fg->outputs[0]->ost   = ost;
1085     fg->outputs[0]->graph = fg;
1086
1087     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1088                             fg->nb_inputs + 1);
1089     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1090         exit_program(1);
1091     fg->inputs[0]->ist   = ist;
1092     fg->inputs[0]->graph = fg;
1093
1094     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1095                               &ist->nb_filters, ist->nb_filters + 1);
1096     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1097
1098     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1099                               &nb_filtergraphs, nb_filtergraphs + 1);
1100     filtergraphs[nb_filtergraphs - 1] = fg;
1101
1102     return fg;
1103 }
1104
1105 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1106 {
1107     InputStream *ist = NULL;
1108     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1109     int i;
1110
1111     // TODO: support other filter types
1112     if (type != AVMEDIA_TYPE_VIDEO) {
1113         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
1114         exit_program(1);
1115     }
1116
1117     if (in->name) {
1118         AVFormatContext *s;
1119         AVStream       *st = NULL;
1120         char *p;
1121         int file_idx = strtol(in->name, &p, 0);
1122
1123         if (file_idx < 0 || file_idx >= nb_input_files) {
1124             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1125                    file_idx, fg->graph_desc);
1126             exit_program(1);
1127         }
1128         s = input_files[file_idx]->ctx;
1129
1130         for (i = 0; i < s->nb_streams; i++) {
1131             if (s->streams[i]->codec->codec_type != type)
1132                 continue;
1133             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1134                 st = s->streams[i];
1135                 break;
1136             }
1137         }
1138         if (!st) {
1139             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1140                    "matches no streams.\n", p, fg->graph_desc);
1141             exit_program(1);
1142         }
1143         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1144     } else {
1145         /* find the first unused stream of corresponding type */
1146         for (i = 0; i < nb_input_streams; i++) {
1147             ist = input_streams[i];
1148             if (ist->st->codec->codec_type == type && ist->discard)
1149                 break;
1150         }
1151         if (i == nb_input_streams) {
1152             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1153                    "unlabeled input pad %d on filter %s", in->pad_idx,
1154                    in->filter_ctx->name);
1155             exit_program(1);
1156         }
1157     }
1158     ist->discard         = 0;
1159     ist->decoding_needed = 1;
1160     ist->st->discard = AVDISCARD_NONE;
1161
1162     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1163                             &fg->nb_inputs, fg->nb_inputs + 1);
1164     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1165         exit_program(1);
1166     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1167     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1168
1169     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1170                               &ist->nb_filters, ist->nb_filters + 1);
1171     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1172 }
1173
1174 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1175 {
1176     char *pix_fmts;
1177     AVCodecContext *codec = ofilter->ost->st->codec;
1178     AVFilterContext *last_filter = out->filter_ctx;
1179     int pad_idx = out->pad_idx;
1180     int ret;
1181     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1182
1183 #if FF_API_OLD_VSINK_API
1184     ret = avfilter_graph_create_filter(&ofilter->filter,
1185                                        avfilter_get_by_name("buffersink"),
1186                                        "out", NULL, NULL, fg->graph);
1187 #else
1188     ret = avfilter_graph_create_filter(&ofilter->filter,
1189                                        avfilter_get_by_name("buffersink"),
1190                                        "out", NULL, buffersink_params, fg->graph);
1191 #endif
1192     av_freep(&buffersink_params);
1193
1194     if (ret < 0)
1195         return ret;
1196
1197     if (codec->width || codec->height) {
1198         char args[255];
1199         AVFilterContext *filter;
1200
1201         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1202                  codec->width,
1203                  codec->height,
1204                  (unsigned)ofilter->ost->sws_flags);
1205         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1206                                                 NULL, args, NULL, fg->graph)) < 0)
1207             return ret;
1208         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1209             return ret;
1210
1211         last_filter = filter;
1212         pad_idx = 0;
1213     }
1214
1215     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1216         AVFilterContext *filter;
1217         if ((ret = avfilter_graph_create_filter(&filter,
1218                                                 avfilter_get_by_name("format"),
1219                                                 "format", pix_fmts, NULL,
1220                                                 fg->graph)) < 0)
1221             return ret;
1222         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1223             return ret;
1224
1225         last_filter = filter;
1226         pad_idx     = 0;
1227         av_freep(&pix_fmts);
1228     }
1229
1230     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1231         return ret;
1232
1233     return 0;
1234 }
1235
1236 static int configure_complex_filter(FilterGraph *fg)
1237 {
1238     AVFilterInOut *inputs, *outputs, *cur;
1239     int ret, i, init = !fg->graph;
1240
1241     avfilter_graph_free(&fg->graph);
1242     if (!(fg->graph = avfilter_graph_alloc()))
1243         return AVERROR(ENOMEM);
1244
1245     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1246         return ret;
1247
1248     for (cur = inputs; init && cur; cur = cur->next)
1249         init_input_filter(fg, cur);
1250
1251     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1252         InputFilter *ifilter = fg->inputs[i];
1253         InputStream     *ist = ifilter->ist;
1254         AVRational       sar;
1255         char            args[255];
1256
1257         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1258                                                  ist->st->codec->sample_aspect_ratio;
1259         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1260                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1261                  sar.num, sar.den);
1262
1263         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1264                                                 avfilter_get_by_name("buffer"), cur->name,
1265                                                 args, NULL, fg->graph)) < 0)
1266             return ret;
1267         if ((ret = avfilter_link(ifilter->filter, 0,
1268                                  cur->filter_ctx, cur->pad_idx)) < 0)
1269             return ret;
1270     }
1271     avfilter_inout_free(&inputs);
1272
1273     if (!init) {
1274         /* we already know the mappings between lavfi outputs and output streams,
1275          * so we can finish the setup */
1276         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1277             configure_output_filter(fg, fg->outputs[i], cur);
1278         avfilter_inout_free(&outputs);
1279
1280         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1281             return ret;
1282     } else {
1283         /* wait until output mappings are processed */
1284         for (cur = outputs; cur;) {
1285             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1286                                      &fg->nb_outputs, fg->nb_outputs + 1);
1287             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1288                 exit_program(1);
1289             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1290             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1291             cur = cur->next;
1292             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1293         }
1294     }
1295
1296     return 0;
1297 }
1298
1299 static int configure_complex_filters(void)
1300 {
1301     int i, ret = 0;
1302
1303     for (i = 0; i < nb_filtergraphs; i++)
1304         if (!filtergraphs[i]->graph &&
1305             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1306             return ret;
1307     return 0;
1308 }
1309
1310 static int configure_filtergraph(FilterGraph *fg)
1311 {
1312     return fg->graph_desc ? configure_complex_filter(fg) :
1313                             configure_simple_filtergraph(fg);
1314 }
1315
1316 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1317 {
1318     int i;
1319     for (i = 0; i < fg->nb_inputs; i++)
1320         if (fg->inputs[i]->ist == ist)
1321             return 1;
1322     return 0;
1323 }
1324
1325 static void term_exit(void)
1326 {
1327     av_log(NULL, AV_LOG_QUIET, "%s", "");
1328 #if HAVE_TERMIOS_H
1329     if(restore_tty)
1330         tcsetattr (0, TCSANOW, &oldtty);
1331 #endif
1332 }
1333
1334 static volatile int received_sigterm = 0;
1335
1336 static void sigterm_handler(int sig)
1337 {
1338     received_sigterm = sig;
1339     received_nb_signals++;
1340     term_exit();
1341     if(received_nb_signals > 3)
1342         exit(123);
1343 }
1344
1345 static void term_init(void)
1346 {
1347 #if HAVE_TERMIOS_H
1348     if(!run_as_daemon){
1349         struct termios tty;
1350
1351         if (tcgetattr (0, &tty) == 0) {
1352             oldtty = tty;
1353             restore_tty = 1;
1354             atexit(term_exit);
1355
1356             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1357                              |INLCR|IGNCR|ICRNL|IXON);
1358             tty.c_oflag |= OPOST;
1359             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1360             tty.c_cflag &= ~(CSIZE|PARENB);
1361             tty.c_cflag |= CS8;
1362             tty.c_cc[VMIN] = 1;
1363             tty.c_cc[VTIME] = 0;
1364
1365             tcsetattr (0, TCSANOW, &tty);
1366         }
1367         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1368     }
1369 #endif
1370     avformat_network_deinit();
1371
1372     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1373     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1374 #ifdef SIGXCPU
1375     signal(SIGXCPU, sigterm_handler);
1376 #endif
1377 }
1378
1379 /* read a key without blocking */
1380 static int read_key(void)
1381 {
1382     unsigned char ch;
1383 #if HAVE_TERMIOS_H
1384     int n = 1;
1385     struct timeval tv;
1386     fd_set rfds;
1387
1388     FD_ZERO(&rfds);
1389     FD_SET(0, &rfds);
1390     tv.tv_sec = 0;
1391     tv.tv_usec = 0;
1392     n = select(1, &rfds, NULL, NULL, &tv);
1393     if (n > 0) {
1394         n = read(0, &ch, 1);
1395         if (n == 1)
1396             return ch;
1397
1398         return n;
1399     }
1400 #elif HAVE_KBHIT
1401 #    if HAVE_PEEKNAMEDPIPE
1402     static int is_pipe;
1403     static HANDLE input_handle;
1404     DWORD dw, nchars;
1405     if(!input_handle){
1406         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1407         is_pipe = !GetConsoleMode(input_handle, &dw);
1408     }
1409
1410     if (stdin->_cnt > 0) {
1411         read(0, &ch, 1);
1412         return ch;
1413     }
1414     if (is_pipe) {
1415         /* When running under a GUI, you will end here. */
1416         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1417             return -1;
1418         //Read it
1419         if(nchars != 0) {
1420             read(0, &ch, 1);
1421             return ch;
1422         }else{
1423             return -1;
1424         }
1425     }
1426 #    endif
1427     if(kbhit())
1428         return(getch());
1429 #endif
1430     return -1;
1431 }
1432
1433 static int decode_interrupt_cb(void *ctx)
1434 {
1435     return received_nb_signals > 1;
1436 }
1437
1438 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1439
1440 void av_noreturn exit_program(int ret)
1441 {
1442     int i, j;
1443
1444     for (i = 0; i < nb_filtergraphs; i++) {
1445         avfilter_graph_free(&filtergraphs[i]->graph);
1446         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1447             av_freep(&filtergraphs[i]->inputs[j]);
1448         av_freep(&filtergraphs[i]->inputs);
1449         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1450             av_freep(&filtergraphs[i]->outputs[j]);
1451         av_freep(&filtergraphs[i]->outputs);
1452         av_freep(&filtergraphs[i]);
1453     }
1454     av_freep(&filtergraphs);
1455
1456     /* close files */
1457     for (i = 0; i < nb_output_files; i++) {
1458         AVFormatContext *s = output_files[i]->ctx;
1459         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1460             avio_close(s->pb);
1461         avformat_free_context(s);
1462         av_dict_free(&output_files[i]->opts);
1463         av_freep(&output_files[i]);
1464     }
1465     for (i = 0; i < nb_output_streams; i++) {
1466         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1467         while (bsfc) {
1468             AVBitStreamFilterContext *next = bsfc->next;
1469             av_bitstream_filter_close(bsfc);
1470             bsfc = next;
1471         }
1472         output_streams[i]->bitstream_filters = NULL;
1473
1474         av_freep(&output_streams[i]->filtered_frame);
1475         av_freep(&output_streams[i]);
1476     }
1477     for (i = 0; i < nb_input_files; i++) {
1478         avformat_close_input(&input_files[i]->ctx);
1479         av_freep(&input_files[i]);
1480     }
1481     for (i = 0; i < nb_input_streams; i++) {
1482         av_freep(&input_streams[i]->decoded_frame);
1483         av_dict_free(&input_streams[i]->opts);
1484         free_buffer_pool(input_streams[i]);
1485         av_freep(&input_streams[i]->filters);
1486         av_freep(&input_streams[i]);
1487     }
1488
1489     if (vstats_file)
1490         fclose(vstats_file);
1491     av_free(vstats_filename);
1492
1493     av_freep(&input_streams);
1494     av_freep(&input_files);
1495     av_freep(&output_streams);
1496     av_freep(&output_files);
1497
1498     uninit_opts();
1499
1500     avfilter_uninit();
1501     avformat_network_deinit();
1502
1503     if (received_sigterm) {
1504         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1505                (int) received_sigterm);
1506         exit (255);
1507     }
1508
1509     exit(ret);
1510 }
1511
1512 static void assert_avoptions(AVDictionary *m)
1513 {
1514     AVDictionaryEntry *t;
1515     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1516         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1517         exit_program(1);
1518     }
1519 }
1520
1521 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1522 {
1523     const char *codec_string = encoder ? "encoder" : "decoder";
1524     AVCodec *codec;
1525     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1526         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1527         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1528                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1529                 codec_string, c->codec->name);
1530         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1531         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1532             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1533                    codec_string, codec->name);
1534         exit_program(1);
1535     }
1536 }
1537
1538 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1539 {
1540     if (codec && codec->sample_fmts) {
1541         const enum AVSampleFormat *p = codec->sample_fmts;
1542         for (; *p != -1; p++) {
1543             if (*p == st->codec->sample_fmt)
1544                 break;
1545         }
1546         if (*p == -1) {
1547             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1548                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1549             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1550             av_log(NULL, AV_LOG_WARNING,
1551                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1552                    av_get_sample_fmt_name(st->codec->sample_fmt),
1553                    codec->name,
1554                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1555             st->codec->sample_fmt = codec->sample_fmts[0];
1556         }
1557     }
1558 }
1559
1560 static double
1561 get_sync_ipts(const OutputStream *ost, int64_t pts)
1562 {
1563     OutputFile *of = output_files[ost->file_index];
1564     return (double)(pts - of->start_time) / AV_TIME_BASE;
1565 }
1566
1567 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1568 {
1569     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1570     AVCodecContext          *avctx = ost->st->codec;
1571     int ret;
1572
1573     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1574         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1575         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1576
1577     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1578         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1579         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1580             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1581             pkt->pts = pkt->dts = max;
1582         }
1583     }
1584
1585     /*
1586      * Audio encoders may split the packets --  #frames in != #packets out.
1587      * But there is no reordering, so we can limit the number of output packets
1588      * by simply dropping them here.
1589      * Counting encoded video frames needs to be done separately because of
1590      * reordering, see do_video_out()
1591      */
1592     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1593         if (ost->frame_number >= ost->max_frames) {
1594             av_free_packet(pkt);
1595             return;
1596         }
1597         ost->frame_number++;
1598     }
1599
1600     while (bsfc) {
1601         AVPacket new_pkt = *pkt;
1602         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1603                                            &new_pkt.data, &new_pkt.size,
1604                                            pkt->data, pkt->size,
1605                                            pkt->flags & AV_PKT_FLAG_KEY);
1606         if (a > 0) {
1607             av_free_packet(pkt);
1608             new_pkt.destruct = av_destruct_packet;
1609         } else if (a < 0) {
1610             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1611                    bsfc->filter->name, pkt->stream_index,
1612                    avctx->codec ? avctx->codec->name : "copy");
1613             print_error("", a);
1614             if (exit_on_error)
1615                 exit_program(1);
1616         }
1617         *pkt = new_pkt;
1618
1619         bsfc = bsfc->next;
1620     }
1621
1622     pkt->stream_index = ost->index;
1623     ret = av_interleaved_write_frame(s, pkt);
1624     if (ret < 0) {
1625         print_error("av_interleaved_write_frame()", ret);
1626         exit_program(1);
1627     }
1628 }
1629
1630 // static int check_recording_time(OutputStream *ost)
1631 // {
1632 //     OutputFile *of = output_files[ost->file_index];
1633 //
1634 //     if (of->recording_time != INT64_MAX &&
1635 //         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1636 //                       AV_TIME_BASE_Q) >= 0) {
1637 //         ost->is_past_recording_time = 1;
1638 //         return 0;
1639 //     }
1640 //     return 1;
1641 // }
1642
1643 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1644                          AVFrame *frame)
1645 {
1646     AVCodecContext *enc = ost->st->codec;
1647     AVPacket pkt;
1648     int got_packet = 0;
1649
1650     av_init_packet(&pkt);
1651     pkt.data = NULL;
1652     pkt.size = 0;
1653 #if 0
1654     if (!check_recording_time(ost))
1655         return;
1656 #endif
1657     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1658         frame->pts = ost->sync_opts;
1659     ost->sync_opts = frame->pts + frame->nb_samples;
1660
1661     av_assert0(pkt.size || !pkt.data);
1662     update_benchmark(NULL);
1663     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1664         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1665         exit_program(1);
1666     }
1667     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1668
1669     if (got_packet) {
1670         if (pkt.pts != AV_NOPTS_VALUE)
1671             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1672         if (pkt.dts != AV_NOPTS_VALUE)
1673             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1674         if (pkt.duration > 0)
1675             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1676
1677         if (debug_ts) {
1678             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1679                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1680                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1681                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1682         }
1683
1684         write_frame(s, &pkt, ost);
1685
1686         audio_size += pkt.size;
1687         av_free_packet(&pkt);
1688     }
1689 }
1690
1691 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1692 {
1693     AVCodecContext *dec;
1694     AVPicture *picture2;
1695     AVPicture picture_tmp;
1696     uint8_t *buf = 0;
1697
1698     dec = ist->st->codec;
1699
1700     /* deinterlace : must be done before any resize */
1701     if (do_deinterlace) {
1702         int size;
1703
1704         /* create temporary picture */
1705         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1706         buf  = av_malloc(size);
1707         if (!buf)
1708             return;
1709
1710         picture2 = &picture_tmp;
1711         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1712
1713         if (avpicture_deinterlace(picture2, picture,
1714                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1715             /* if error, do not deinterlace */
1716             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1717             av_free(buf);
1718             buf = NULL;
1719             picture2 = picture;
1720         }
1721     } else {
1722         picture2 = picture;
1723     }
1724
1725     if (picture != picture2)
1726         *picture = *picture2;
1727     *bufp = buf;
1728 }
1729
1730 static void do_subtitle_out(AVFormatContext *s,
1731                             OutputStream *ost,
1732                             InputStream *ist,
1733                             AVSubtitle *sub,
1734                             int64_t pts)
1735 {
1736     static uint8_t *subtitle_out = NULL;
1737     int subtitle_out_max_size = 1024 * 1024;
1738     int subtitle_out_size, nb, i;
1739     AVCodecContext *enc;
1740     AVPacket pkt;
1741
1742     if (pts == AV_NOPTS_VALUE) {
1743         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1744         if (exit_on_error)
1745             exit_program(1);
1746         return;
1747     }
1748
1749     enc = ost->st->codec;
1750
1751     if (!subtitle_out) {
1752         subtitle_out = av_malloc(subtitle_out_max_size);
1753     }
1754
1755     /* Note: DVB subtitle need one packet to draw them and one other
1756        packet to clear them */
1757     /* XXX: signal it in the codec context ? */
1758     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1759         nb = 2;
1760     else
1761         nb = 1;
1762
1763     for (i = 0; i < nb; i++) {
1764         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1765
1766         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1767         // start_display_time is required to be 0
1768         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1769         sub->end_display_time  -= sub->start_display_time;
1770         sub->start_display_time = 0;
1771         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1772                                                     subtitle_out_max_size, sub);
1773         if (subtitle_out_size < 0) {
1774             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1775             exit_program(1);
1776         }
1777
1778         av_init_packet(&pkt);
1779         pkt.data = subtitle_out;
1780         pkt.size = subtitle_out_size;
1781         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1782         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1783             /* XXX: the pts correction is handled here. Maybe handling
1784                it in the codec would be better */
1785             if (i == 0)
1786                 pkt.pts += 90 * sub->start_display_time;
1787             else
1788                 pkt.pts += 90 * sub->end_display_time;
1789         }
1790         write_frame(s, &pkt, ost);
1791     }
1792 }
1793
1794 static double psnr(double d)
1795 {
1796     return -10.0 * log(d) / log(10.0);
1797 }
1798
1799 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1800                            int frame_size)
1801 {
1802     AVCodecContext *enc;
1803     int frame_number;
1804     double ti1, bitrate, avg_bitrate;
1805
1806     /* this is executed just the first time do_video_stats is called */
1807     if (!vstats_file) {
1808         vstats_file = fopen(vstats_filename, "w");
1809         if (!vstats_file) {
1810             perror("fopen");
1811             exit_program(1);
1812         }
1813     }
1814
1815     enc = ost->st->codec;
1816     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1817         frame_number = ost->frame_number;
1818         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1819         if (enc->flags&CODEC_FLAG_PSNR)
1820             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1821
1822         fprintf(vstats_file,"f_size= %6d ", frame_size);
1823         /* compute pts value */
1824         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1825         if (ti1 < 0.01)
1826             ti1 = 0.01;
1827
1828         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1829         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1830         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1831                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1832         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1833     }
1834 }
1835
1836
1837 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1838                          AVFrame *in_picture, float quality)
1839 {
1840     int nb_frames, i, ret, format_video_sync;
1841     AVCodecContext *enc;
1842     double sync_ipts, delta;
1843     double duration = 0;
1844     int frame_size = 0;
1845     InputStream *ist = NULL;
1846
1847     if (ost->source_index >= 0)
1848         ist = input_streams[ost->source_index];
1849
1850     enc = ost->st->codec;
1851
1852     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1853         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1854
1855     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1856     delta = sync_ipts - ost->sync_opts + duration;
1857
1858     /* by default, we output a single frame */
1859     nb_frames = 1;
1860
1861     format_video_sync = video_sync_method;
1862     if (format_video_sync == VSYNC_AUTO)
1863         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1864
1865     switch (format_video_sync) {
1866     case VSYNC_CFR:
1867         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1868         if (delta < -1.1)
1869             nb_frames = 0;
1870         else if (delta > 1.1)
1871             nb_frames = lrintf(delta);
1872         break;
1873     case VSYNC_VFR:
1874         if (delta <= -0.6)
1875             nb_frames = 0;
1876         else if (delta > 0.6)
1877             ost->sync_opts = lrint(sync_ipts);
1878         break;
1879     case VSYNC_DROP:
1880     case VSYNC_PASSTHROUGH:
1881         ost->sync_opts = lrint(sync_ipts);
1882         break;
1883     default:
1884         av_assert0(0);
1885     }
1886
1887     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1888     if (nb_frames == 0) {
1889         nb_frames_drop++;
1890         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1891         return;
1892     } else if (nb_frames > 1) {
1893         nb_frames_dup += nb_frames - 1;
1894         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1895     }
1896
1897     /* duplicates frame if needed */
1898     for (i = 0; i < nb_frames; i++) {
1899         AVPacket pkt;
1900         av_init_packet(&pkt);
1901         pkt.data = NULL;
1902         pkt.size = 0;
1903
1904         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1905             enc->codec->id == CODEC_ID_RAWVIDEO) {
1906             /* raw pictures are written as AVPicture structure to
1907                avoid any copies. We support temporarily the older
1908                method. */
1909             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1910             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1911             pkt.data   = (uint8_t *)in_picture;
1912             pkt.size   =  sizeof(AVPicture);
1913             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1914             pkt.flags |= AV_PKT_FLAG_KEY;
1915
1916             write_frame(s, &pkt, ost);
1917         } else {
1918             int got_packet;
1919             AVFrame big_picture;
1920
1921             big_picture = *in_picture;
1922             /* better than nothing: use input picture interlaced
1923                settings */
1924             big_picture.interlaced_frame = in_picture->interlaced_frame;
1925             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1926                 if (ost->top_field_first == -1)
1927                     big_picture.top_field_first = in_picture->top_field_first;
1928                 else
1929                     big_picture.top_field_first = !!ost->top_field_first;
1930             }
1931
1932             /* handles same_quant here. This is not correct because it may
1933                not be a global option */
1934             big_picture.quality = quality;
1935             if (!enc->me_threshold)
1936                 big_picture.pict_type = 0;
1937             big_picture.pts = ost->sync_opts;
1938             if (ost->forced_kf_index < ost->forced_kf_count &&
1939                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1940                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1941                 ost->forced_kf_index++;
1942             }
1943             update_benchmark(NULL);
1944             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1945             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1946             if (ret < 0) {
1947                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1948                 exit_program(1);
1949             }
1950
1951             if (got_packet) {
1952                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1953                     pkt.pts = ost->sync_opts;
1954
1955                 if (pkt.pts != AV_NOPTS_VALUE)
1956                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1957                 if (pkt.dts != AV_NOPTS_VALUE)
1958                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1959
1960                 if (debug_ts) {
1961                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1962                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1963                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1964                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1965                 }
1966
1967                 write_frame(s, &pkt, ost);
1968                 frame_size = pkt.size;
1969                 video_size += pkt.size;
1970                 av_free_packet(&pkt);
1971
1972                 /* if two pass, output log */
1973                 if (ost->logfile && enc->stats_out) {
1974                     fprintf(ost->logfile, "%s", enc->stats_out);
1975                 }
1976             }
1977         }
1978         ost->sync_opts++;
1979         /*
1980          * For video, number of frames in == number of packets out.
1981          * But there may be reordering, so we can't throw away frames on encoder
1982          * flush, we need to limit them here, before they go into encoder.
1983          */
1984         ost->frame_number++;
1985     }
1986     if (vstats_filename && frame_size)
1987         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1988 }
1989
1990 /* check for new output on any of the filtergraphs */
1991 static int poll_filters(void)
1992 {
1993     AVFilterBufferRef *picref;
1994     AVFrame *filtered_frame = NULL;
1995     int i, ret, ret_all;
1996     unsigned nb_success, nb_eof;
1997     int64_t frame_pts;
1998
1999     while (1) {
2000         /* Reap all buffers present in the buffer sinks */
2001         for (i = 0; i < nb_output_streams; i++) {
2002             OutputStream *ost = output_streams[i];
2003             OutputFile    *of = output_files[ost->file_index];
2004             int ret = 0;
2005
2006             if (!ost->filter || ost->is_past_recording_time)
2007                 continue;
2008
2009             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2010                 return AVERROR(ENOMEM);
2011             } else
2012                 avcodec_get_frame_defaults(ost->filtered_frame);
2013             filtered_frame = ost->filtered_frame;
2014
2015             while (1) {
2016                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
2017                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2018                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2019                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
2020                                                     ost->st->codec->frame_size);
2021                 else
2022 #ifdef SINKA
2023                     ret = av_buffersink_read(ost->filter->filter, &picref);
2024 #else
2025                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
2026                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
2027 #endif
2028                 if (ret < 0) {
2029                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
2030                         char buf[256];
2031                         av_strerror(ret, buf, sizeof(buf));
2032                         av_log(NULL, AV_LOG_WARNING,
2033                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
2034                     }
2035                     break;
2036                 }
2037                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
2038                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2039                 else if (picref->pts != AV_NOPTS_VALUE)
2040                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
2041                                                     ost->filter->filter->inputs[0]->time_base,
2042                                                     ost->st->codec->time_base) -
2043                                         av_rescale_q(of->start_time,
2044                                                     AV_TIME_BASE_Q,
2045                                                     ost->st->codec->time_base);
2046                 //if (ost->source_index >= 0)
2047                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2048
2049                 if (of->start_time && filtered_frame->pts < of->start_time) {
2050                     avfilter_unref_buffer(picref);
2051                     continue;
2052                 }
2053
2054                 switch (ost->filter->filter->inputs[0]->type) {
2055                 case AVMEDIA_TYPE_VIDEO:
2056                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2057                     filtered_frame->pts = frame_pts;
2058                     if (!ost->frame_aspect_ratio)
2059                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2060
2061                     do_video_out(of->ctx, ost, filtered_frame,
2062                                  same_quant ? ost->last_quality :
2063                                               ost->st->codec->global_quality);
2064                     break;
2065                 case AVMEDIA_TYPE_AUDIO:
2066                     avfilter_copy_buf_props(filtered_frame, picref);
2067                     filtered_frame->pts = frame_pts;
2068                     do_audio_out(of->ctx, ost, filtered_frame);
2069                     break;
2070                 default:
2071                     // TODO support subtitle filters
2072                     av_assert0(0);
2073                 }
2074
2075                 avfilter_unref_buffer(picref);
2076             }
2077         }
2078         /* Request frames through all the graphs */
2079         ret_all = nb_success = nb_eof = 0;
2080         for (i = 0; i < nb_filtergraphs; i++) {
2081             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2082             if (!ret) {
2083                 nb_success++;
2084             } else if (ret == AVERROR_EOF) {
2085                 nb_eof++;
2086             } else if (ret != AVERROR(EAGAIN)) {
2087                 char buf[256];
2088                 av_strerror(ret, buf, sizeof(buf));
2089                 av_log(NULL, AV_LOG_WARNING,
2090                        "Error in request_frame(): %s\n", buf);
2091                 ret_all = ret;
2092             }
2093         }
2094         if (!nb_success)
2095             break;
2096         /* Try again if anything succeeded */
2097     }
2098     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2099 }
2100
2101 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2102 {
2103     char buf[1024];
2104     OutputStream *ost;
2105     AVFormatContext *oc;
2106     int64_t total_size;
2107     AVCodecContext *enc;
2108     int frame_number, vid, i;
2109     double bitrate;
2110     int64_t pts = INT64_MAX;
2111     static int64_t last_time = -1;
2112     static int qp_histogram[52];
2113     int hours, mins, secs, us;
2114
2115     if (!print_stats && !is_last_report)
2116         return;
2117
2118     if (!is_last_report) {
2119         if (last_time == -1) {
2120             last_time = cur_time;
2121             return;
2122         }
2123         if ((cur_time - last_time) < 500000)
2124             return;
2125         last_time = cur_time;
2126     }
2127
2128
2129     oc = output_files[0]->ctx;
2130
2131     total_size = avio_size(oc->pb);
2132     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2133         total_size = avio_tell(oc->pb);
2134         if (total_size < 0)
2135             total_size = 0;
2136     }
2137
2138     buf[0] = '\0';
2139     vid = 0;
2140     for (i = 0; i < nb_output_streams; i++) {
2141         float q = -1;
2142         ost = output_streams[i];
2143         enc = ost->st->codec;
2144         if (!ost->stream_copy && enc->coded_frame)
2145             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2146         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2147             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2148         }
2149         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2150             float fps, t = (cur_time-timer_start) / 1000000.0;
2151
2152             frame_number = ost->frame_number;
2153             fps = t > 1 ? frame_number / t : 0;
2154             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2155                      frame_number, fps < 9.95, fps, q);
2156             if (is_last_report)
2157                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2158             if (qp_hist) {
2159                 int j;
2160                 int qp = lrintf(q);
2161                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2162                     qp_histogram[qp]++;
2163                 for (j = 0; j < 32; j++)
2164                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2165             }
2166             if (enc->flags&CODEC_FLAG_PSNR) {
2167                 int j;
2168                 double error, error_sum = 0;
2169                 double scale, scale_sum = 0;
2170                 char type[3] = { 'Y','U','V' };
2171                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2172                 for (j = 0; j < 3; j++) {
2173                     if (is_last_report) {
2174                         error = enc->error[j];
2175                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2176                     } else {
2177                         error = enc->coded_frame->error[j];
2178                         scale = enc->width * enc->height * 255.0 * 255.0;
2179                     }
2180                     if (j)
2181                         scale /= 4;
2182                     error_sum += error;
2183                     scale_sum += scale;
2184                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2185                 }
2186                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2187             }
2188             vid = 1;
2189         }
2190         /* compute min output value */
2191         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2192                                       ost->st->time_base, AV_TIME_BASE_Q));
2193     }
2194
2195     secs = pts / AV_TIME_BASE;
2196     us = pts % AV_TIME_BASE;
2197     mins = secs / 60;
2198     secs %= 60;
2199     hours = mins / 60;
2200     mins %= 60;
2201
2202     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2203
2204     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2205              "size=%8.0fkB time=", total_size / 1024.0);
2206     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2207              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2208              (100 * us) / AV_TIME_BASE);
2209     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2210              "bitrate=%6.1fkbits/s", bitrate);
2211
2212     if (nb_frames_dup || nb_frames_drop)
2213         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2214                 nb_frames_dup, nb_frames_drop);
2215
2216     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2217
2218     fflush(stderr);
2219
2220     if (is_last_report) {
2221         int64_t raw= audio_size + video_size + extra_size;
2222         av_log(NULL, AV_LOG_INFO, "\n");
2223         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2224                video_size / 1024.0,
2225                audio_size / 1024.0,
2226                extra_size / 1024.0,
2227                100.0 * (total_size - raw) / raw
2228         );
2229         if(video_size + audio_size + extra_size == 0){
2230             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2231         }
2232     }
2233 }
2234
2235 static void flush_encoders(void)
2236 {
2237     int i, ret;
2238
2239     for (i = 0; i < nb_output_streams; i++) {
2240         OutputStream   *ost = output_streams[i];
2241         AVCodecContext *enc = ost->st->codec;
2242         AVFormatContext *os = output_files[ost->file_index]->ctx;
2243         int stop_encoding = 0;
2244
2245         if (!ost->encoding_needed)
2246             continue;
2247
2248         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2249             continue;
2250         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2251             continue;
2252
2253         for (;;) {
2254             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2255             const char *desc;
2256             int64_t *size;
2257
2258             switch (ost->st->codec->codec_type) {
2259             case AVMEDIA_TYPE_AUDIO:
2260                 encode = avcodec_encode_audio2;
2261                 desc   = "Audio";
2262                 size   = &audio_size;
2263                 break;
2264             case AVMEDIA_TYPE_VIDEO:
2265                 encode = avcodec_encode_video2;
2266                 desc   = "Video";
2267                 size   = &video_size;
2268                 break;
2269             default:
2270                 stop_encoding = 1;
2271             }
2272
2273             if (encode) {
2274                 AVPacket pkt;
2275                 int got_packet;
2276                 av_init_packet(&pkt);
2277                 pkt.data = NULL;
2278                 pkt.size = 0;
2279
2280                 update_benchmark(NULL);
2281                 ret = encode(enc, &pkt, NULL, &got_packet);
2282                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2283                 if (ret < 0) {
2284                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2285                     exit_program(1);
2286                 }
2287                 *size += pkt.size;
2288                 if (ost->logfile && enc->stats_out) {
2289                     fprintf(ost->logfile, "%s", enc->stats_out);
2290                 }
2291                 if (!got_packet) {
2292                     stop_encoding = 1;
2293                     break;
2294                 }
2295                 if (pkt.pts != AV_NOPTS_VALUE)
2296                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2297                 if (pkt.dts != AV_NOPTS_VALUE)
2298                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2299                 write_frame(os, &pkt, ost);
2300             }
2301
2302             if (stop_encoding)
2303                 break;
2304         }
2305     }
2306 }
2307
2308 /*
2309  * Check whether a packet from ist should be written into ost at this time
2310  */
2311 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2312 {
2313     OutputFile *of = output_files[ost->file_index];
2314     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2315
2316     if (ost->source_index != ist_index)
2317         return 0;
2318
2319     if (of->start_time && ist->pts < of->start_time)
2320         return 0;
2321
2322     if (of->recording_time != INT64_MAX &&
2323         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2324                       (AVRational){ 1, 1000000 }) >= 0) {
2325         ost->is_past_recording_time = 1;
2326         return 0;
2327     }
2328
2329     return 1;
2330 }
2331
2332 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2333 {
2334     OutputFile *of = output_files[ost->file_index];
2335     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2336     AVPicture pict;
2337     AVPacket opkt;
2338
2339     av_init_packet(&opkt);
2340
2341     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2342         !ost->copy_initial_nonkeyframes)
2343         return;
2344
2345     /* force the input stream PTS */
2346     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2347         audio_size += pkt->size;
2348     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2349         video_size += pkt->size;
2350         ost->sync_opts++;
2351     }
2352
2353     if (pkt->pts != AV_NOPTS_VALUE)
2354         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2355     else
2356         opkt.pts = AV_NOPTS_VALUE;
2357
2358     if (pkt->dts == AV_NOPTS_VALUE)
2359         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2360     else
2361         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2362     opkt.dts -= ost_tb_start_time;
2363
2364     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2365     opkt.flags    = pkt->flags;
2366
2367     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2368     if (  ost->st->codec->codec_id != CODEC_ID_H264
2369        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2370        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2371        && ost->st->codec->codec_id != CODEC_ID_VC1
2372        ) {
2373         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2374             opkt.destruct = av_destruct_packet;
2375     } else {
2376         opkt.data = pkt->data;
2377         opkt.size = pkt->size;
2378     }
2379     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2380         /* store AVPicture in AVPacket, as expected by the output format */
2381         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2382         opkt.data = (uint8_t *)&pict;
2383         opkt.size = sizeof(AVPicture);
2384         opkt.flags |= AV_PKT_FLAG_KEY;
2385     }
2386
2387     write_frame(of->ctx, &opkt, ost);
2388     ost->st->codec->frame_number++;
2389     av_free_packet(&opkt);
2390 }
2391
2392 static void rate_emu_sleep(InputStream *ist)
2393 {
2394     if (input_files[ist->file_index]->rate_emu) {
2395         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2396         int64_t now = av_gettime() - ist->start;
2397         if (pts > now)
2398             usleep(pts - now);
2399     }
2400 }
2401
2402 static int guess_input_channel_layout(InputStream *ist)
2403 {
2404     AVCodecContext *dec = ist->st->codec;
2405
2406     if (!dec->channel_layout) {
2407         char layout_name[256];
2408
2409         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2410         if (!dec->channel_layout)
2411             return 0;
2412         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2413                                      dec->channels, dec->channel_layout);
2414         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2415                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2416     }
2417     return 1;
2418 }
2419
2420 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2421 {
2422     AVFrame *decoded_frame;
2423     AVCodecContext *avctx = ist->st->codec;
2424     int i, ret, resample_changed;
2425
2426     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2427         return AVERROR(ENOMEM);
2428     else
2429         avcodec_get_frame_defaults(ist->decoded_frame);
2430     decoded_frame = ist->decoded_frame;
2431
2432     update_benchmark(NULL);
2433     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2434     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2435     if (ret < 0) {
2436         return ret;
2437     }
2438     if (avctx->sample_rate <= 0) {
2439         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2440         return AVERROR_INVALIDDATA;
2441     }
2442
2443     if (!*got_output) {
2444         /* no audio frame */
2445         if (!pkt->size)
2446             for (i = 0; i < ist->nb_filters; i++)
2447                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2448                                      AV_BUFFERSRC_FLAG_NO_COPY);
2449         return ret;
2450     }
2451
2452     /* if the decoder provides a pts, use it instead of the last packet pts.
2453        the decoder could be delaying output by a packet or more. */
2454     if (decoded_frame->pts != AV_NOPTS_VALUE)
2455         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2456     else if (pkt->pts != AV_NOPTS_VALUE) {
2457         decoded_frame->pts = pkt->pts;
2458         pkt->pts           = AV_NOPTS_VALUE;
2459     }else
2460         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2461
2462
2463 #if 1
2464     /* increment next_dts to use for the case where the input stream does not
2465        have timestamps or there are multiple frames in the packet */
2466     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2467                      avctx->sample_rate;
2468     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2469                      avctx->sample_rate;
2470 #endif
2471
2472     rate_emu_sleep(ist);
2473
2474     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2475                        ist->resample_channels       != avctx->channels               ||
2476                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2477                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2478     if (resample_changed) {
2479         char layout1[64], layout2[64];
2480
2481         if (!guess_input_channel_layout(ist)) {
2482             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2483                    "layout for Input Stream #%d.%d\n", ist->file_index,
2484                    ist->st->index);
2485             exit_program(1);
2486         }
2487         decoded_frame->channel_layout = avctx->channel_layout;
2488
2489         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2490                                      ist->resample_channel_layout);
2491         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2492                                      decoded_frame->channel_layout);
2493
2494         av_log(NULL, AV_LOG_INFO,
2495                "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",
2496                ist->file_index, ist->st->index,
2497                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2498                ist->resample_channels, layout1,
2499                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2500                avctx->channels, layout2);
2501
2502         ist->resample_sample_fmt     = decoded_frame->format;
2503         ist->resample_sample_rate    = decoded_frame->sample_rate;
2504         ist->resample_channel_layout = decoded_frame->channel_layout;
2505         ist->resample_channels       = avctx->channels;
2506
2507         for (i = 0; i < nb_filtergraphs; i++)
2508             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2509                 configure_filtergraph(filtergraphs[i]) < 0) {
2510                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2511                 exit_program(1);
2512             }
2513     }
2514
2515     for (i = 0; i < ist->nb_filters; i++)
2516         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2517
2518     return ret;
2519 }
2520
2521 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2522 {
2523     AVFrame *decoded_frame;
2524     void *buffer_to_free = NULL;
2525     int i, ret = 0, resample_changed;
2526     int64_t best_effort_timestamp;
2527     AVRational *frame_sample_aspect;
2528     float quality;
2529
2530     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2531         return AVERROR(ENOMEM);
2532     else
2533         avcodec_get_frame_defaults(ist->decoded_frame);
2534     decoded_frame = ist->decoded_frame;
2535     pkt->pts  = *pkt_pts;
2536     pkt->dts  = ist->dts;
2537     *pkt_pts  = AV_NOPTS_VALUE;
2538
2539     update_benchmark(NULL);
2540     ret = avcodec_decode_video2(ist->st->codec,
2541                                 decoded_frame, got_output, pkt);
2542     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2543     if (ret < 0)
2544         return ret;
2545
2546     quality = same_quant ? decoded_frame->quality : 0;
2547     if (!*got_output) {
2548         /* no picture yet */
2549         if (!pkt->size)
2550             for (i = 0; i < ist->nb_filters; i++)
2551                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2552         return ret;
2553     }
2554
2555     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2556     if(best_effort_timestamp != AV_NOPTS_VALUE)
2557         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2558
2559     pkt->size = 0;
2560     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2561
2562     rate_emu_sleep(ist);
2563
2564     if (ist->st->sample_aspect_ratio.num)
2565         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2566
2567     resample_changed = ist->resample_width   != decoded_frame->width  ||
2568                        ist->resample_height  != decoded_frame->height ||
2569                        ist->resample_pix_fmt != decoded_frame->format;
2570     if (resample_changed) {
2571         av_log(NULL, AV_LOG_INFO,
2572                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2573                ist->file_index, ist->st->index,
2574                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2575                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2576
2577         ist->resample_width   = decoded_frame->width;
2578         ist->resample_height  = decoded_frame->height;
2579         ist->resample_pix_fmt = decoded_frame->format;
2580
2581         for (i = 0; i < nb_filtergraphs; i++)
2582             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2583                 configure_filtergraph(filtergraphs[i]) < 0) {
2584                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2585                 exit_program(1);
2586             }
2587     }
2588
2589     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2590     for (i = 0; i < ist->nb_filters; i++) {
2591         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2592                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2593                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2594         // XXX what an ugly hack
2595         if (ist->filters[i]->graph->nb_outputs == 1)
2596             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2597
2598         if (!frame_sample_aspect->num)
2599             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2600         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2601             FrameBuffer      *buf = decoded_frame->opaque;
2602             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2603                                         decoded_frame->data, decoded_frame->linesize,
2604                                         AV_PERM_READ | AV_PERM_PRESERVE,
2605                                         ist->st->codec->width, ist->st->codec->height,
2606                                         ist->st->codec->pix_fmt);
2607
2608             avfilter_copy_frame_props(fb, decoded_frame);
2609             fb->buf->priv           = buf;
2610             fb->buf->free           = filter_release_buffer;
2611
2612             av_assert0(buf->refcount>0);
2613             buf->refcount++;
2614             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2615                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2616                                  AV_BUFFERSRC_FLAG_NO_COPY);
2617         } else
2618         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2619             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2620             exit_program(1);
2621         }
2622
2623     }
2624
2625     av_free(buffer_to_free);
2626     return ret;
2627 }
2628
2629 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2630 {
2631     AVSubtitle subtitle;
2632     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2633                                           &subtitle, got_output, pkt);
2634     if (ret < 0)
2635         return ret;
2636     if (!*got_output)
2637         return ret;
2638
2639     rate_emu_sleep(ist);
2640
2641     for (i = 0; i < nb_output_streams; i++) {
2642         OutputStream *ost = output_streams[i];
2643
2644         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2645             continue;
2646
2647         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2648     }
2649
2650     avsubtitle_free(&subtitle);
2651     return ret;
2652 }
2653
2654 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2655 static int output_packet(InputStream *ist, const AVPacket *pkt)
2656 {
2657     int ret = 0, i;
2658     int got_output;
2659     int64_t pkt_pts = AV_NOPTS_VALUE;
2660
2661     AVPacket avpkt;
2662     if (!ist->saw_first_ts) {
2663         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;
2664         ist->pts = 0;
2665         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2666             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2667             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2668         }
2669         ist->saw_first_ts = 1;
2670     }
2671
2672     if (ist->next_dts == AV_NOPTS_VALUE)
2673         ist->next_dts = ist->dts;
2674     if (ist->next_pts == AV_NOPTS_VALUE)
2675         ist->next_pts = ist->pts;
2676
2677     if (pkt == NULL) {
2678         /* EOF handling */
2679         av_init_packet(&avpkt);
2680         avpkt.data = NULL;
2681         avpkt.size = 0;
2682         goto handle_eof;
2683     } else {
2684         avpkt = *pkt;
2685     }
2686
2687     if (pkt->dts != AV_NOPTS_VALUE) {
2688         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2689         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2690             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2691     }
2692     if(pkt->pts != AV_NOPTS_VALUE)
2693         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2694
2695     // while we have more to decode or while the decoder did output something on EOF
2696     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2697         int duration;
2698     handle_eof:
2699
2700         ist->pts = ist->next_pts;
2701         ist->dts = ist->next_dts;
2702
2703         if (avpkt.size && avpkt.size != pkt->size) {
2704             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2705                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2706             ist->showed_multi_packet_warning = 1;
2707         }
2708
2709         switch (ist->st->codec->codec_type) {
2710         case AVMEDIA_TYPE_AUDIO:
2711             ret = transcode_audio    (ist, &avpkt, &got_output);
2712             break;
2713         case AVMEDIA_TYPE_VIDEO:
2714             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2715             if (avpkt.duration) {
2716                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2717             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2718                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2719                 duration = ((int64_t)AV_TIME_BASE *
2720                                 ist->st->codec->time_base.num * ticks) /
2721                                 ist->st->codec->time_base.den;
2722             } else
2723                 duration = 0;
2724
2725             if(ist->dts != AV_NOPTS_VALUE && duration) {
2726                 ist->next_dts += duration;
2727             }else
2728                 ist->next_dts = AV_NOPTS_VALUE;
2729
2730             if (got_output)
2731                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2732             break;
2733         case AVMEDIA_TYPE_SUBTITLE:
2734             ret = transcode_subtitles(ist, &avpkt, &got_output);
2735             break;
2736         default:
2737             return -1;
2738         }
2739
2740         if (ret < 0)
2741             return ret;
2742
2743         avpkt.dts=
2744         avpkt.pts= AV_NOPTS_VALUE;
2745
2746         // touch data and size only if not EOF
2747         if (pkt) {
2748             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2749                 ret = avpkt.size;
2750             avpkt.data += ret;
2751             avpkt.size -= ret;
2752         }
2753         if (!got_output) {
2754             continue;
2755         }
2756     }
2757
2758     /* handle stream copy */
2759     if (!ist->decoding_needed) {
2760         rate_emu_sleep(ist);
2761         ist->dts = ist->next_dts;
2762         switch (ist->st->codec->codec_type) {
2763         case AVMEDIA_TYPE_AUDIO:
2764             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2765                              ist->st->codec->sample_rate;
2766             break;
2767         case AVMEDIA_TYPE_VIDEO:
2768             if (pkt->duration) {
2769                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2770             } else if(ist->st->codec->time_base.num != 0) {
2771                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2772                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2773                                   ist->st->codec->time_base.num * ticks) /
2774                                   ist->st->codec->time_base.den;
2775             }
2776             break;
2777         }
2778         ist->pts = ist->dts;
2779         ist->next_pts = ist->next_dts;
2780     }
2781     for (i = 0; pkt && i < nb_output_streams; i++) {
2782         OutputStream *ost = output_streams[i];
2783
2784         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2785             continue;
2786
2787         do_streamcopy(ist, ost, pkt);
2788     }
2789
2790     return 0;
2791 }
2792
2793 static void print_sdp(void)
2794 {
2795     char sdp[2048];
2796     int i;
2797     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2798
2799     if (!avc)
2800         exit_program(1);
2801     for (i = 0; i < nb_output_files; i++)
2802         avc[i] = output_files[i]->ctx;
2803
2804     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2805     printf("SDP:\n%s\n", sdp);
2806     fflush(stdout);
2807     av_freep(&avc);
2808 }
2809
2810 static int init_input_stream(int ist_index, char *error, int error_len)
2811 {
2812     InputStream *ist = input_streams[ist_index];
2813
2814     if (ist->decoding_needed) {
2815         AVCodec *codec = ist->dec;
2816         if (!codec) {
2817             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2818                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2819             return AVERROR(EINVAL);
2820         }
2821
2822         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2823         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2824             ist->st->codec->get_buffer     = codec_get_buffer;
2825             ist->st->codec->release_buffer = codec_release_buffer;
2826             ist->st->codec->opaque         = ist;
2827         }
2828
2829         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2830             av_dict_set(&ist->opts, "threads", "auto", 0);
2831         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2832             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2833                     ist->file_index, ist->st->index);
2834             return AVERROR(EINVAL);
2835         }
2836         assert_codec_experimental(ist->st->codec, 0);
2837         assert_avoptions(ist->opts);
2838     }
2839
2840     ist->next_pts = AV_NOPTS_VALUE;
2841     ist->next_dts = AV_NOPTS_VALUE;
2842     ist->is_start = 1;
2843
2844     return 0;
2845 }
2846
2847 static InputStream *get_input_stream(OutputStream *ost)
2848 {
2849     if (ost->source_index >= 0)
2850         return input_streams[ost->source_index];
2851
2852     if (ost->filter) {
2853         FilterGraph *fg = ost->filter->graph;
2854         int i;
2855
2856         for (i = 0; i < fg->nb_inputs; i++)
2857             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2858                 return fg->inputs[i]->ist;
2859     }
2860
2861     return NULL;
2862 }
2863
2864 static int transcode_init(void)
2865 {
2866     int ret = 0, i, j, k;
2867     AVFormatContext *oc;
2868     AVCodecContext *codec, *icodec;
2869     OutputStream *ost;
2870     InputStream *ist;
2871     char error[1024];
2872     int want_sdp = 1;
2873
2874     /* init framerate emulation */
2875     for (i = 0; i < nb_input_files; i++) {
2876         InputFile *ifile = input_files[i];
2877         if (ifile->rate_emu)
2878             for (j = 0; j < ifile->nb_streams; j++)
2879                 input_streams[j + ifile->ist_index]->start = av_gettime();
2880     }
2881
2882     /* output stream init */
2883     for (i = 0; i < nb_output_files; i++) {
2884         oc = output_files[i]->ctx;
2885         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2886             av_dump_format(oc, i, oc->filename, 1);
2887             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2888             return AVERROR(EINVAL);
2889         }
2890     }
2891
2892     /* init complex filtergraphs */
2893     for (i = 0; i < nb_filtergraphs; i++)
2894         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2895             return ret;
2896
2897     /* for each output stream, we compute the right encoding parameters */
2898     for (i = 0; i < nb_output_streams; i++) {
2899         ost = output_streams[i];
2900         oc  = output_files[ost->file_index]->ctx;
2901         ist = get_input_stream(ost);
2902
2903         if (ost->attachment_filename)
2904             continue;
2905
2906         codec  = ost->st->codec;
2907
2908         if (ist) {
2909             icodec = ist->st->codec;
2910
2911             ost->st->disposition          = ist->st->disposition;
2912             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2913             codec->chroma_sample_location = icodec->chroma_sample_location;
2914         }
2915
2916         if (ost->stream_copy) {
2917             uint64_t extra_size;
2918
2919             av_assert0(ist && !ost->filter);
2920
2921             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2922
2923             if (extra_size > INT_MAX) {
2924                 return AVERROR(EINVAL);
2925             }
2926
2927             /* if stream_copy is selected, no need to decode or encode */
2928             codec->codec_id   = icodec->codec_id;
2929             codec->codec_type = icodec->codec_type;
2930
2931             if (!codec->codec_tag) {
2932                 if (!oc->oformat->codec_tag ||
2933                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2934                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2935                     codec->codec_tag = icodec->codec_tag;
2936             }
2937
2938             codec->bit_rate       = icodec->bit_rate;
2939             codec->rc_max_rate    = icodec->rc_max_rate;
2940             codec->rc_buffer_size = icodec->rc_buffer_size;
2941             codec->field_order    = icodec->field_order;
2942             codec->extradata      = av_mallocz(extra_size);
2943             if (!codec->extradata) {
2944                 return AVERROR(ENOMEM);
2945             }
2946             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2947             codec->extradata_size= icodec->extradata_size;
2948             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2949
2950             codec->time_base = ist->st->time_base;
2951             /*
2952              * Avi is a special case here because it supports variable fps but
2953              * having the fps and timebase differe significantly adds quite some
2954              * overhead
2955              */
2956             if(!strcmp(oc->oformat->name, "avi")) {
2957                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2958                                  && av_q2d(ist->st->time_base) < 1.0/500
2959                     || copy_tb==0){
2960                     codec->time_base = icodec->time_base;
2961                     codec->time_base.num *= icodec->ticks_per_frame;
2962                     codec->time_base.den *= 2;
2963                     codec->ticks_per_frame = 2;
2964                 }
2965             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2966                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2967                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2968             ) {
2969                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2970                                 && av_q2d(ist->st->time_base) < 1.0/500
2971                    || copy_tb==0){
2972                     codec->time_base = icodec->time_base;
2973                     codec->time_base.num *= icodec->ticks_per_frame;
2974                 }
2975             }
2976             av_reduce(&codec->time_base.num, &codec->time_base.den,
2977                         codec->time_base.num, codec->time_base.den, INT_MAX);
2978
2979             switch (codec->codec_type) {
2980             case AVMEDIA_TYPE_AUDIO:
2981                 if (audio_volume != 256) {
2982                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2983                     exit_program(1);
2984                 }
2985                 codec->channel_layout     = icodec->channel_layout;
2986                 codec->sample_rate        = icodec->sample_rate;
2987                 codec->channels           = icodec->channels;
2988                 codec->frame_size         = icodec->frame_size;
2989                 codec->audio_service_type = icodec->audio_service_type;
2990                 codec->block_align        = icodec->block_align;
2991                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2992                     codec->block_align= 0;
2993                 if(codec->codec_id == CODEC_ID_AC3)
2994                     codec->block_align= 0;
2995                 break;
2996             case AVMEDIA_TYPE_VIDEO:
2997                 codec->pix_fmt            = icodec->pix_fmt;
2998                 codec->width              = icodec->width;
2999                 codec->height             = icodec->height;
3000                 codec->has_b_frames       = icodec->has_b_frames;
3001                 if (!codec->sample_aspect_ratio.num) {
3002                     codec->sample_aspect_ratio   =
3003                     ost->st->sample_aspect_ratio =
3004                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
3005                         ist->st->codec->sample_aspect_ratio.num ?
3006                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3007                 }
3008                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3009                 break;
3010             case AVMEDIA_TYPE_SUBTITLE:
3011                 codec->width  = icodec->width;
3012                 codec->height = icodec->height;
3013                 break;
3014             case AVMEDIA_TYPE_DATA:
3015             case AVMEDIA_TYPE_ATTACHMENT:
3016                 break;
3017             default:
3018                 abort();
3019             }
3020         } else {
3021             if (!ost->enc)
3022                 ost->enc = avcodec_find_encoder(codec->codec_id);
3023             if (!ost->enc) {
3024                 /* should only happen when a default codec is not present. */
3025                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3026                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3027                 ret = AVERROR(EINVAL);
3028                 goto dump_format;
3029             }
3030
3031             if (ist)
3032                 ist->decoding_needed = 1;
3033             ost->encoding_needed = 1;
3034
3035             if (!ost->filter &&
3036                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3037                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3038                     FilterGraph *fg;
3039                     fg = init_simple_filtergraph(ist, ost);
3040                     if (configure_simple_filtergraph(fg)) {
3041                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3042                         exit(1);
3043                     }
3044             }
3045
3046             switch (codec->codec_type) {
3047             case AVMEDIA_TYPE_AUDIO:
3048                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3049                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3050                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3051                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3052                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3053                 break;
3054             case AVMEDIA_TYPE_VIDEO:
3055                 if (ist && !ost->frame_rate.num)
3056                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3057                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3058                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3059                     ost->frame_rate = ost->enc->supported_framerates[idx];
3060                 }
3061                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3062                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3063                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3064                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3065                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3066                 }
3067                 for (j = 0; j < ost->forced_kf_count; j++)
3068                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3069                                                          AV_TIME_BASE_Q,
3070                                                          codec->time_base);
3071
3072                 codec->width  = ost->filter->filter->inputs[0]->w;
3073                 codec->height = ost->filter->filter->inputs[0]->h;
3074                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3075                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3076                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3077                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3078                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3079
3080                 if (codec->width   != icodec->width  ||
3081                     codec->height  != icodec->height ||
3082                     codec->pix_fmt != icodec->pix_fmt) {
3083                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3084                 }
3085
3086                 break;
3087             case AVMEDIA_TYPE_SUBTITLE:
3088                 codec->time_base = (AVRational){1, 1000};
3089                 break;
3090             default:
3091                 abort();
3092                 break;
3093             }
3094             /* two pass mode */
3095             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3096                 char logfilename[1024];
3097                 FILE *f;
3098
3099                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3100                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3101                          i);
3102                 if (!strcmp(ost->enc->name, "libx264")) {
3103                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3104                 } else {
3105                     if (codec->flags & CODEC_FLAG_PASS2) {
3106                         char  *logbuffer;
3107                         size_t logbuffer_size;
3108                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3109                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3110                                    logfilename);
3111                             exit_program(1);
3112                         }
3113                         codec->stats_in = logbuffer;
3114                     }
3115                     if (codec->flags & CODEC_FLAG_PASS1) {
3116                         f = fopen(logfilename, "wb");
3117                         if (!f) {
3118                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3119                                 logfilename, strerror(errno));
3120                             exit_program(1);
3121                         }
3122                         ost->logfile = f;
3123                     }
3124                 }
3125             }
3126         }
3127     }
3128
3129     /* open each encoder */
3130     for (i = 0; i < nb_output_streams; i++) {
3131         ost = output_streams[i];
3132         if (ost->encoding_needed) {
3133             AVCodec      *codec = ost->enc;
3134             AVCodecContext *dec = NULL;
3135
3136             if ((ist = get_input_stream(ost)))
3137                 dec = ist->st->codec;
3138             if (dec && dec->subtitle_header) {
3139                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3140                 if (!ost->st->codec->subtitle_header) {
3141                     ret = AVERROR(ENOMEM);
3142                     goto dump_format;
3143                 }
3144                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3145                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3146             }
3147             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3148                 av_dict_set(&ost->opts, "threads", "auto", 0);
3149             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3150                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3151                         ost->file_index, ost->index);
3152                 ret = AVERROR(EINVAL);
3153                 goto dump_format;
3154             }
3155             assert_codec_experimental(ost->st->codec, 1);
3156             assert_avoptions(ost->opts);
3157             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3158                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3159                                              " It takes bits/s as argument, not kbits/s\n");
3160             extra_size += ost->st->codec->extradata_size;
3161
3162             if (ost->st->codec->me_threshold)
3163                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3164         }
3165     }
3166
3167     /* init input streams */
3168     for (i = 0; i < nb_input_streams; i++)
3169         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3170             goto dump_format;
3171
3172     /* discard unused programs */
3173     for (i = 0; i < nb_input_files; i++) {
3174         InputFile *ifile = input_files[i];
3175         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3176             AVProgram *p = ifile->ctx->programs[j];
3177             int discard  = AVDISCARD_ALL;
3178
3179             for (k = 0; k < p->nb_stream_indexes; k++)
3180                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3181                     discard = AVDISCARD_DEFAULT;
3182                     break;
3183                 }
3184             p->discard = discard;
3185         }
3186     }
3187
3188     /* open files and write file headers */
3189     for (i = 0; i < nb_output_files; i++) {
3190         oc = output_files[i]->ctx;
3191         oc->interrupt_callback = int_cb;
3192         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3193             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3194             ret = AVERROR(EINVAL);
3195             goto dump_format;
3196         }
3197 //         assert_avoptions(output_files[i]->opts);
3198         if (strcmp(oc->oformat->name, "rtp")) {
3199             want_sdp = 0;
3200         }
3201     }
3202
3203  dump_format:
3204     /* dump the file output parameters - cannot be done before in case
3205        of stream copy */
3206     for (i = 0; i < nb_output_files; i++) {
3207         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3208     }
3209
3210     /* dump the stream mapping */
3211     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3212     for (i = 0; i < nb_input_streams; i++) {
3213         ist = input_streams[i];
3214
3215         for (j = 0; j < ist->nb_filters; j++) {
3216             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3217             if (ist->filters[j]->graph->graph_desc) {
3218                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3219                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3220                        link->dst->filter->name);
3221                 if (link->dst->input_count > 1)
3222                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3223                 if (nb_filtergraphs > 1)
3224                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3225                 av_log(NULL, AV_LOG_INFO, "\n");
3226             }
3227         }
3228     }
3229
3230     for (i = 0; i < nb_output_streams; i++) {
3231         ost = output_streams[i];
3232
3233         if (ost->attachment_filename) {
3234             /* an attached file */
3235             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3236                    ost->attachment_filename, ost->file_index, ost->index);
3237             continue;
3238         }
3239
3240         if (ost->filter && ost->filter->graph->graph_desc) {
3241             /* output from a complex graph */
3242             AVFilterLink *link = ost->filter->filter->inputs[0];
3243             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3244             if (link->src->output_count > 1)
3245                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3246             if (nb_filtergraphs > 1)
3247                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3248
3249             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3250                    ost->index, ost->enc ? ost->enc->name : "?");
3251             continue;
3252         }
3253
3254         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3255                input_streams[ost->source_index]->file_index,
3256                input_streams[ost->source_index]->st->index,
3257                ost->file_index,
3258                ost->index);
3259         if (ost->sync_ist != input_streams[ost->source_index])
3260             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3261                    ost->sync_ist->file_index,
3262                    ost->sync_ist->st->index);
3263         if (ost->stream_copy)
3264             av_log(NULL, AV_LOG_INFO, " (copy)");
3265         else
3266             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3267                    input_streams[ost->source_index]->dec->name : "?",
3268                    ost->enc ? ost->enc->name : "?");
3269         av_log(NULL, AV_LOG_INFO, "\n");
3270     }
3271
3272     if (ret) {
3273         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3274         return ret;
3275     }
3276
3277     if (want_sdp) {
3278         print_sdp();
3279     }
3280
3281     return 0;
3282 }
3283
3284 /*
3285  * The following code is the main loop of the file converter
3286  */
3287 static int transcode(void)
3288 {
3289     int ret, i;
3290     AVFormatContext *is, *os;
3291     OutputStream *ost;
3292     InputStream *ist;
3293     uint8_t *no_packet;
3294     int no_packet_count = 0;
3295     int64_t timer_start;
3296     int key;
3297
3298     if (!(no_packet = av_mallocz(nb_input_files)))
3299         exit_program(1);
3300
3301     ret = transcode_init();
3302     if (ret < 0)
3303         goto fail;
3304
3305     if (!using_stdin) {
3306         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3307     }
3308
3309     timer_start = av_gettime();
3310
3311     for (; received_sigterm == 0;) {
3312         int file_index, ist_index, past_recording_time = 1;
3313         AVPacket pkt;
3314         int64_t ipts_min;
3315         int64_t cur_time= av_gettime();
3316
3317         ipts_min = INT64_MAX;
3318         /* if 'q' pressed, exits */
3319         if (!using_stdin) {
3320             static int64_t last_time;
3321             if (received_nb_signals)
3322                 break;
3323             /* read_key() returns 0 on EOF */
3324             if(cur_time - last_time >= 100000 && !run_as_daemon){
3325                 key =  read_key();
3326                 last_time = cur_time;
3327             }else
3328                 key = -1;
3329             if (key == 'q')
3330                 break;
3331             if (key == '+') av_log_set_level(av_log_get_level()+10);
3332             if (key == '-') av_log_set_level(av_log_get_level()-10);
3333             if (key == 's') qp_hist     ^= 1;
3334             if (key == 'h'){
3335                 if (do_hex_dump){
3336                     do_hex_dump = do_pkt_dump = 0;
3337                 } else if(do_pkt_dump){
3338                     do_hex_dump = 1;
3339                 } else
3340                     do_pkt_dump = 1;
3341                 av_log_set_level(AV_LOG_DEBUG);
3342             }
3343             if (key == 'c' || key == 'C'){
3344                 char buf[4096], target[64], command[256], arg[256] = {0};
3345                 double time;
3346                 int k, n = 0;
3347                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3348                 i = 0;
3349                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3350                     if (k > 0)
3351                         buf[i++] = k;
3352                 buf[i] = 0;
3353                 if (k > 0 &&
3354                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3355                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3356                            target, time, command, arg);
3357                     for (i = 0; i < nb_filtergraphs; i++) {
3358                         FilterGraph *fg = filtergraphs[i];
3359                         if (fg->graph) {
3360                             if (time < 0) {
3361                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3362                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3363                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3364                             } else {
3365                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3366                             }
3367                         }
3368                     }
3369                 } else {
3370                     av_log(NULL, AV_LOG_ERROR,
3371                            "Parse error, at least 3 arguments were expected, "
3372                            "only %d given in string '%s'\n", n, buf);
3373                 }
3374             }
3375             if (key == 'd' || key == 'D'){
3376                 int debug=0;
3377                 if(key == 'D') {
3378                     debug = input_streams[0]->st->codec->debug<<1;
3379                     if(!debug) debug = 1;
3380                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3381                         debug += debug;
3382                 }else
3383                     if(scanf("%d", &debug)!=1)
3384                         fprintf(stderr,"error parsing debug value\n");
3385                 for(i=0;i<nb_input_streams;i++) {
3386                     input_streams[i]->st->codec->debug = debug;
3387                 }
3388                 for(i=0;i<nb_output_streams;i++) {
3389                     ost = output_streams[i];
3390                     ost->st->codec->debug = debug;
3391                 }
3392                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3393                 fprintf(stderr,"debug=%d\n", debug);
3394             }
3395             if (key == '?'){
3396                 fprintf(stderr, "key    function\n"
3397                                 "?      show this help\n"
3398                                 "+      increase verbosity\n"
3399                                 "-      decrease verbosity\n"
3400                                 "c      Send command to filtergraph\n"
3401                                 "D      cycle through available debug modes\n"
3402                                 "h      dump packets/hex press to cycle through the 3 states\n"
3403                                 "q      quit\n"
3404                                 "s      Show QP histogram\n"
3405                 );
3406             }
3407         }
3408
3409         /* check if there's any stream where output is still needed */
3410         for (i = 0; i < nb_output_streams; i++) {
3411             OutputFile *of;
3412             ost = output_streams[i];
3413             of  = output_files[ost->file_index];
3414             os  = output_files[ost->file_index]->ctx;
3415             if (ost->is_past_recording_time ||
3416                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3417                 continue;
3418             if (ost->frame_number >= ost->max_frames) {
3419                 int j;
3420                 for (j = 0; j < of->ctx->nb_streams; j++)
3421                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3422                 continue;
3423             }
3424             past_recording_time = 0;
3425         }
3426         if (past_recording_time)
3427             break;
3428
3429         /* select the stream that we must read now by looking at the
3430            smallest output pts */
3431         file_index = -1;
3432         for (i = 0; i < nb_input_streams; i++) {
3433             int64_t ipts;
3434             ist = input_streams[i];
3435             ipts = ist->pts;
3436             if (ist->discard || no_packet[ist->file_index])
3437                 continue;
3438             if (!input_files[ist->file_index]->eof_reached) {
3439                 if (ipts < ipts_min) {
3440                     ipts_min = ipts;
3441                     file_index = ist->file_index;
3442                 }
3443             }
3444         }
3445         /* if none, if is finished */
3446         if (file_index < 0) {
3447             if (no_packet_count) {
3448                 no_packet_count = 0;
3449                 memset(no_packet, 0, nb_input_files);
3450                 usleep(10000);
3451                 continue;
3452             }
3453             break;
3454         }
3455
3456         /* read a frame from it and output it in the fifo */
3457         is  = input_files[file_index]->ctx;
3458         ret = av_read_frame(is, &pkt);
3459         if (ret == AVERROR(EAGAIN)) {
3460             no_packet[file_index] = 1;
3461             no_packet_count++;
3462             continue;
3463         }
3464         if (ret < 0) {
3465             input_files[file_index]->eof_reached = 1;
3466
3467             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3468                 ist = input_streams[input_files[file_index]->ist_index + i];
3469                 if (ist->decoding_needed)
3470                     output_packet(ist, NULL);
3471             }
3472
3473             if (opt_shortest)
3474                 break;
3475             else
3476                 continue;
3477         }
3478
3479         no_packet_count = 0;
3480         memset(no_packet, 0, nb_input_files);
3481
3482         if (do_pkt_dump) {
3483             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3484                              is->streams[pkt.stream_index]);
3485         }
3486         /* the following test is needed in case new streams appear
3487            dynamically in stream : we ignore them */
3488         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3489             goto discard_packet;
3490         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3491         ist = input_streams[ist_index];
3492         if (ist->discard)
3493             goto discard_packet;
3494
3495         if (pkt.dts != AV_NOPTS_VALUE)
3496             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3497         if (pkt.pts != AV_NOPTS_VALUE)
3498             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3499
3500         if (pkt.pts != AV_NOPTS_VALUE)
3501             pkt.pts *= ist->ts_scale;
3502         if (pkt.dts != AV_NOPTS_VALUE)
3503             pkt.dts *= ist->ts_scale;
3504
3505         if (debug_ts) {
3506             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3507                     "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",
3508                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3509                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3510                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3511                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3512                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3513                     input_files[ist->file_index]->ts_offset);
3514         }
3515
3516         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3517             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3518             int64_t delta   = pkt_dts - ist->next_dts;
3519             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3520             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3521                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3522                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3523                 pkt_dts+1<ist->pts){
3524                 input_files[ist->file_index]->ts_offset -= delta;
3525                 av_log(NULL, AV_LOG_DEBUG,
3526                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3527                        delta, input_files[ist->file_index]->ts_offset);
3528                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3529                 if (pkt.pts != AV_NOPTS_VALUE)
3530                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3531             }
3532             } else {
3533                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3534                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3535                      pkt_dts+1<ist->pts){
3536                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3537                     pkt.dts = AV_NOPTS_VALUE;
3538                 }
3539                 if (pkt.pts != AV_NOPTS_VALUE){
3540                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3541                     delta   = pkt_pts - ist->next_dts;
3542                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3543                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3544                         pkt_pts+1<ist->pts) {
3545                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3546                         pkt.pts = AV_NOPTS_VALUE;
3547                     }
3548                 }
3549             }
3550         }
3551
3552         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3553         if (output_packet(ist, &pkt) < 0 ||
3554             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3555             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3556                    ist->file_index, ist->st->index);
3557             if (exit_on_error)
3558                 exit_program(1);
3559             av_free_packet(&pkt);
3560             continue;
3561         }
3562
3563     discard_packet:
3564         av_free_packet(&pkt);
3565
3566         /* dump report by using the output first video and audio streams */
3567         print_report(0, timer_start, cur_time);
3568     }
3569
3570     /* at the end of stream, we must flush the decoder buffers */
3571     for (i = 0; i < nb_input_streams; i++) {
3572         ist = input_streams[i];
3573         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3574             output_packet(ist, NULL);
3575         }
3576     }
3577     poll_filters();
3578     flush_encoders();
3579
3580     term_exit();
3581
3582     /* write the trailer if needed and close file */
3583     for (i = 0; i < nb_output_files; i++) {
3584         os = output_files[i]->ctx;
3585         av_write_trailer(os);
3586     }
3587
3588     /* dump report by using the first video and audio streams */
3589     print_report(1, timer_start, av_gettime());
3590
3591     /* close each encoder */
3592     for (i = 0; i < nb_output_streams; i++) {
3593         ost = output_streams[i];
3594         if (ost->encoding_needed) {
3595             av_freep(&ost->st->codec->stats_in);
3596             avcodec_close(ost->st->codec);
3597         }
3598     }
3599
3600     /* close each decoder */
3601     for (i = 0; i < nb_input_streams; i++) {
3602         ist = input_streams[i];
3603         if (ist->decoding_needed) {
3604             avcodec_close(ist->st->codec);
3605         }
3606     }
3607
3608     /* finished ! */
3609     ret = 0;
3610
3611  fail:
3612     av_freep(&no_packet);
3613
3614     if (output_streams) {
3615         for (i = 0; i < nb_output_streams; i++) {
3616             ost = output_streams[i];
3617             if (ost) {
3618                 if (ost->stream_copy)
3619                     av_freep(&ost->st->codec->extradata);
3620                 if (ost->logfile) {
3621                     fclose(ost->logfile);
3622                     ost->logfile = NULL;
3623                 }
3624          &