lavc/libutvideo: protect header.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/dict.h"
46 #include "libavutil/mathematics.h"
47 #include "libavutil/pixdesc.h"
48 #include "libavutil/avstring.h"
49 #include "libavutil/libm.h"
50 #include "libavutil/imgutils.h"
51 #include "libavutil/timestamp.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 # include "libavfilter/avcodec.h"
58 # include "libavfilter/avfilter.h"
59 # include "libavfilter/avfiltergraph.h"
60 # include "libavfilter/buffersink.h"
61 # include "libavfilter/buffersrc.h"
62
63 #if HAVE_SYS_RESOURCE_H
64 #include <sys/types.h>
65 #include <sys/time.h>
66 #include <sys/resource.h>
67 #elif HAVE_GETPROCESSTIMES
68 #include <windows.h>
69 #endif
70 #if HAVE_GETPROCESSMEMORYINFO
71 #include <windows.h>
72 #include <psapi.h>
73 #endif
74
75 #if HAVE_SYS_SELECT_H
76 #include <sys/select.h>
77 #endif
78
79 #if HAVE_TERMIOS_H
80 #include <fcntl.h>
81 #include <sys/ioctl.h>
82 #include <sys/time.h>
83 #include <termios.h>
84 #elif HAVE_KBHIT
85 #include <conio.h>
86 #endif
87 #include <time.h>
88
89 #include "cmdutils.h"
90
91 #include "libavutil/avassert.h"
92
93 #define VSYNC_AUTO       -1
94 #define VSYNC_PASSTHROUGH 0
95 #define VSYNC_CFR         1
96 #define VSYNC_VFR         2
97 #define VSYNC_DROP        0xff
98
99 // #define SRCA
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179 } InputFilter;
180
181 typedef struct OutputFilter {
182     AVFilterContext     *filter;
183     struct OutputStream *ost;
184     struct FilterGraph  *graph;
185
186     /* temporary storage until stream maps are processed */
187     AVFilterInOut       *out_tmp;
188 } OutputFilter;
189
190 typedef struct FilterGraph {
191     int            index;
192     const char    *graph_desc;
193
194     AVFilterGraph *graph;
195
196     InputFilter   **inputs;
197     int          nb_inputs;
198     OutputFilter **outputs;
199     int         nb_outputs;
200 } FilterGraph;
201
202 typedef struct FrameBuffer {
203     uint8_t *base[4];
204     uint8_t *data[4];
205     int  linesize[4];
206
207     int h, w;
208     enum PixelFormat pix_fmt;
209
210     int refcount;
211     struct InputStream *ist;
212     struct FrameBuffer *next;
213 } FrameBuffer;
214
215 typedef struct InputStream {
216     int file_index;
217     AVStream *st;
218     int discard;             /* true if stream data should be discarded */
219     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
220     AVCodec *dec;
221     AVFrame *decoded_frame;
222
223     int64_t       start;     /* time when read started */
224     /* predicted dts of the next packet read for this stream or (when there are
225      * several frames in a packet) of the next frame in current packet */
226     int64_t       next_dts;
227     /* dts of the last packet read for this stream */
228     int64_t       dts;
229
230     int64_t       next_pts;  ///< synthetic pts for the next decode frame
231     int64_t       pts;       ///< current pts of the decoded frame
232     double ts_scale;
233     int is_start;            /* is 1 at the start and after a discontinuity */
234     int saw_first_ts;
235     int showed_multi_packet_warning;
236     AVDictionary *opts;
237
238     int resample_height;
239     int resample_width;
240     int resample_pix_fmt;
241
242     int      resample_sample_fmt;
243     int      resample_sample_rate;
244     int      resample_channels;
245     uint64_t resample_channel_layout;
246
247     /* a pool of free buffers for decoded data */
248     FrameBuffer *buffer_pool;
249     int dr1;
250
251     /* decoded data from this stream goes into all those filters
252      * currently video only */
253     InputFilter **filters;
254     int        nb_filters;
255 } InputStream;
256
257 typedef struct InputFile {
258     AVFormatContext *ctx;
259     int eof_reached;      /* true if eof reached */
260     int ist_index;        /* index of first stream in input_streams */
261     int buffer_size;      /* current total buffer size */
262     int64_t ts_offset;
263     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
264                              from ctx.nb_streams if new streams appear during av_read_frame() */
265     int rate_emu;
266 } InputFile;
267
268 typedef struct OutputStream {
269     int file_index;          /* file index */
270     int index;               /* stream index in the output file */
271     int source_index;        /* InputStream index */
272     AVStream *st;            /* stream in the output file */
273     int encoding_needed;     /* true if encoding needed for this stream */
274     int frame_number;
275     /* input pts and corresponding output pts
276        for A/V sync */
277     struct InputStream *sync_ist; /* input stream to sync against */
278     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
279     AVBitStreamFilterContext *bitstream_filters;
280     AVCodec *enc;
281     int64_t max_frames;
282     AVFrame *filtered_frame;
283
284     /* video only */
285     AVRational frame_rate;
286     int force_fps;
287     int top_field_first;
288
289     float frame_aspect_ratio;
290     float last_quality;
291
292     /* forced key frames */
293     int64_t *forced_kf_pts;
294     int forced_kf_count;
295     int forced_kf_index;
296
297     FILE *logfile;
298
299     OutputFilter *filter;
300     char *avfilter;
301
302     int64_t sws_flags;
303     int64_t swr_dither_method;
304     double swr_dither_scale;
305     AVDictionary *opts;
306     int is_past_recording_time;
307     int stream_copy;
308     const char *attachment_filename;
309     int copy_initial_nonkeyframes;
310
311     enum PixelFormat pix_fmts[2];
312     int keep_pix_fmt;
313 } OutputStream;
314
315
316 #if HAVE_TERMIOS_H
317
318 /* init terminal so that we can grab keys */
319 static struct termios oldtty;
320 static int restore_tty;
321 #endif
322
323 typedef struct OutputFile {
324     AVFormatContext *ctx;
325     AVDictionary *opts;
326     int ost_index;       /* index of the first stream in output_streams */
327     int64_t recording_time; /* desired length of the resulting file in microseconds */
328     int64_t start_time;     /* start time in microseconds */
329     uint64_t limit_filesize; /* filesize limit expressed in bytes */
330 } OutputFile;
331
332 static InputStream **input_streams = NULL;
333 static int        nb_input_streams = 0;
334 static InputFile   **input_files   = NULL;
335 static int        nb_input_files   = 0;
336
337 static OutputStream **output_streams = NULL;
338 static int         nb_output_streams = 0;
339 static OutputFile   **output_files   = NULL;
340 static int         nb_output_files   = 0;
341
342 static FilterGraph **filtergraphs;
343 int               nb_filtergraphs;
344
345 typedef struct OptionsContext {
346     /* input/output options */
347     int64_t start_time;
348     const char *format;
349
350     SpecifierOpt *codec_names;
351     int        nb_codec_names;
352     SpecifierOpt *audio_channels;
353     int        nb_audio_channels;
354     SpecifierOpt *audio_sample_rate;
355     int        nb_audio_sample_rate;
356     SpecifierOpt *frame_rates;
357     int        nb_frame_rates;
358     SpecifierOpt *frame_sizes;
359     int        nb_frame_sizes;
360     SpecifierOpt *frame_pix_fmts;
361     int        nb_frame_pix_fmts;
362
363     /* input options */
364     int64_t input_ts_offset;
365     int rate_emu;
366
367     SpecifierOpt *ts_scale;
368     int        nb_ts_scale;
369     SpecifierOpt *dump_attachment;
370     int        nb_dump_attachment;
371
372     /* output options */
373     StreamMap *stream_maps;
374     int     nb_stream_maps;
375     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
376     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
377     int metadata_global_manual;
378     int metadata_streams_manual;
379     int metadata_chapters_manual;
380     const char **attachments;
381     int       nb_attachments;
382
383     int chapters_input_file;
384
385     int64_t recording_time;
386     uint64_t limit_filesize;
387     float mux_preload;
388     float mux_max_delay;
389
390     int video_disable;
391     int audio_disable;
392     int subtitle_disable;
393     int data_disable;
394
395     /* indexed by output file stream index */
396     int   *streamid_map;
397     int nb_streamid_map;
398
399     SpecifierOpt *metadata;
400     int        nb_metadata;
401     SpecifierOpt *max_frames;
402     int        nb_max_frames;
403     SpecifierOpt *bitstream_filters;
404     int        nb_bitstream_filters;
405     SpecifierOpt *codec_tags;
406     int        nb_codec_tags;
407     SpecifierOpt *sample_fmts;
408     int        nb_sample_fmts;
409     SpecifierOpt *qscale;
410     int        nb_qscale;
411     SpecifierOpt *forced_key_frames;
412     int        nb_forced_key_frames;
413     SpecifierOpt *force_fps;
414     int        nb_force_fps;
415     SpecifierOpt *frame_aspect_ratios;
416     int        nb_frame_aspect_ratios;
417     SpecifierOpt *rc_overrides;
418     int        nb_rc_overrides;
419     SpecifierOpt *intra_matrices;
420     int        nb_intra_matrices;
421     SpecifierOpt *inter_matrices;
422     int        nb_inter_matrices;
423     SpecifierOpt *top_field_first;
424     int        nb_top_field_first;
425     SpecifierOpt *metadata_map;
426     int        nb_metadata_map;
427     SpecifierOpt *presets;
428     int        nb_presets;
429     SpecifierOpt *copy_initial_nonkeyframes;
430     int        nb_copy_initial_nonkeyframes;
431     SpecifierOpt *filters;
432     int        nb_filters;
433 } OptionsContext;
434
435 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
436 {\
437     int i, ret;\
438     for (i = 0; i < o->nb_ ## name; i++) {\
439         char *spec = o->name[i].specifier;\
440         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
441             outvar = o->name[i].u.type;\
442         else if (ret < 0)\
443             exit_program(1);\
444     }\
445 }
446
447 static int64_t getutime(void)
448 {
449 #if HAVE_GETRUSAGE
450     struct rusage rusage;
451
452     getrusage(RUSAGE_SELF, &rusage);
453     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
454 #elif HAVE_GETPROCESSTIMES
455     HANDLE proc;
456     FILETIME c, e, k, u;
457     proc = GetCurrentProcess();
458     GetProcessTimes(proc, &c, &e, &k, &u);
459     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
460 #else
461     return av_gettime();
462 #endif
463 }
464
465 static void update_benchmark(const char *fmt, ...)
466 {
467     if (do_benchmark_all) {
468         int64_t t = getutime();
469         va_list va;
470         char buf[1024];
471
472         if (fmt) {
473             va_start(va, fmt);
474             vsnprintf(buf, sizeof(buf), fmt, va);
475             va_end(va);
476             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
477         }
478         current_time = t;
479     }
480 }
481
482 static void reset_options(OptionsContext *o, int is_input)
483 {
484     const OptionDef *po = options;
485     OptionsContext bak= *o;
486     int i;
487
488     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
489     while (po->name) {
490         void *dst = (uint8_t*)o + po->u.off;
491
492         if (po->flags & OPT_SPEC) {
493             SpecifierOpt **so = dst;
494             int i, *count = (int*)(so + 1);
495             for (i = 0; i < *count; i++) {
496                 av_freep(&(*so)[i].specifier);
497                 if (po->flags & OPT_STRING)
498                     av_freep(&(*so)[i].u.str);
499             }
500             av_freep(so);
501             *count = 0;
502         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
503             av_freep(dst);
504         po++;
505     }
506
507     for (i = 0; i < o->nb_stream_maps; i++)
508         av_freep(&o->stream_maps[i].linklabel);
509     av_freep(&o->stream_maps);
510     av_freep(&o->audio_channel_maps);
511     av_freep(&o->streamid_map);
512
513     memset(o, 0, sizeof(*o));
514
515     if(is_input) o->recording_time = bak.recording_time;
516     else         o->recording_time = INT64_MAX;
517     o->mux_max_delay  = 0.7;
518     o->limit_filesize = UINT64_MAX;
519     o->chapters_input_file = INT_MAX;
520
521     uninit_opts();
522     init_opts();
523 }
524
525 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
526 {
527     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
528     int i, ret;
529     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
530     int h_chroma_shift, v_chroma_shift;
531     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
532     int w = s->width, h = s->height;
533
534     if (!buf)
535         return AVERROR(ENOMEM);
536
537     avcodec_align_dimensions(s, &w, &h);
538
539     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
540         w += 2*edge;
541         h += 2*edge;
542     }
543
544     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
545                               s->pix_fmt, 32)) < 0) {
546         av_freep(&buf);
547         return ret;
548     }
549     /* XXX this shouldn't be needed, but some tests break without this line
550      * those decoders are buggy and need to be fixed.
551      * the following tests fail:
552      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
553      */
554     memset(buf->base[0], 128, ret);
555
556     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
557     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
558         const int h_shift = i==0 ? 0 : h_chroma_shift;
559         const int v_shift = i==0 ? 0 : v_chroma_shift;
560         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
561             buf->data[i] = buf->base[i];
562         else
563             buf->data[i] = buf->base[i] +
564                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
565                                    (pixel_size*edge >> h_shift), 32);
566     }
567     buf->w       = s->width;
568     buf->h       = s->height;
569     buf->pix_fmt = s->pix_fmt;
570     buf->ist     = ist;
571
572     *pbuf = buf;
573     return 0;
574 }
575
576 static void free_buffer_pool(InputStream *ist)
577 {
578     FrameBuffer *buf = ist->buffer_pool;
579     while (buf) {
580         ist->buffer_pool = buf->next;
581         av_freep(&buf->base[0]);
582         av_free(buf);
583         buf = ist->buffer_pool;
584     }
585 }
586
587 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
588 {
589     av_assert0(buf->refcount > 0);
590     buf->refcount--;
591     if (!buf->refcount) {
592         FrameBuffer *tmp;
593         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
594             av_assert1(tmp != buf);
595         buf->next = ist->buffer_pool;
596         ist->buffer_pool = buf;
597     }
598 }
599
600 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
601 {
602     InputStream *ist = s->opaque;
603     FrameBuffer *buf;
604     int ret, i;
605
606     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
607         return -1;
608
609     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
610         return ret;
611
612     buf              = ist->buffer_pool;
613     ist->buffer_pool = buf->next;
614     buf->next        = NULL;
615     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
616         av_freep(&buf->base[0]);
617         av_free(buf);
618         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
619             return ret;
620     }
621     av_assert0(!buf->refcount);
622     buf->refcount++;
623
624     frame->opaque        = buf;
625     frame->type          = FF_BUFFER_TYPE_USER;
626     frame->extended_data = frame->data;
627     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
628     frame->width         = buf->w;
629     frame->height        = buf->h;
630     frame->format        = buf->pix_fmt;
631     frame->sample_aspect_ratio = s->sample_aspect_ratio;
632
633     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
634         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
635         frame->data[i]     = buf->data[i];
636         frame->linesize[i] = buf->linesize[i];
637     }
638
639     return 0;
640 }
641
642 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
643 {
644     InputStream *ist = s->opaque;
645     FrameBuffer *buf = frame->opaque;
646     int i;
647
648     if(frame->type!=FF_BUFFER_TYPE_USER)
649         return avcodec_default_release_buffer(s, frame);
650
651     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
652         frame->data[i] = NULL;
653
654     unref_buffer(ist, buf);
655 }
656
657 static void filter_release_buffer(AVFilterBuffer *fb)
658 {
659     FrameBuffer *buf = fb->priv;
660     av_free(fb);
661     unref_buffer(buf->ist, buf);
662 }
663
664 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
665 {
666     if (codec && codec->pix_fmts) {
667         const enum PixelFormat *p = codec->pix_fmts;
668         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
669         enum PixelFormat best= PIX_FMT_NONE;
670         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
671             if (st->codec->codec_id == CODEC_ID_MJPEG) {
672                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
673             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
674                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
675                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
676             }
677         }
678         for (; *p != PIX_FMT_NONE; p++) {
679             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
680             if (*p == target)
681                 break;
682         }
683         if (*p == PIX_FMT_NONE) {
684             if (target != PIX_FMT_NONE)
685                 av_log(NULL, AV_LOG_WARNING,
686                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
687                        av_pix_fmt_descriptors[target].name,
688                        codec->name,
689                        av_pix_fmt_descriptors[best].name);
690             return best;
691         }
692     }
693     return target;
694 }
695
696 static char *choose_pix_fmts(OutputStream *ost)
697 {
698      if (ost->keep_pix_fmt) {
699         if (ost->filter)
700             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
701                                             AVFILTER_AUTO_CONVERT_NONE);
702         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
703             return NULL;
704         ost->pix_fmts[0] = ost->st->codec->pix_fmt;
705         return ost->pix_fmts;
706     }
707     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
708         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
709     } else if (ost->enc->pix_fmts) {
710         const enum PixelFormat *p;
711         AVIOContext *s = NULL;
712         uint8_t *ret;
713         int len;
714
715         if (avio_open_dyn_buf(&s) < 0)
716             exit_program(1);
717
718         p = ost->enc->pix_fmts;
719         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
720             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
721                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
722             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
724                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
725             }
726         }
727
728         for (; *p != PIX_FMT_NONE; p++) {
729             const char *name = av_get_pix_fmt_name(*p);
730             avio_printf(s, "%s:", name);
731         }
732         len = avio_close_dyn_buf(s, &ret);
733         ret[len - 1] = 0;
734         return ret;
735     } else
736         return NULL;
737 }
738
739 /**
740  * Define a function for building a string containing a list of
741  * allowed formats,
742  */
743 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
744 static char *choose_ ## var ## s(OutputStream *ost)                             \
745 {                                                                               \
746     if (ost->st->codec->var != none) {                                          \
747         get_name(ost->st->codec->var);                                          \
748         return av_strdup(name);                                                 \
749     } else if (ost->enc->supported_list) {                                      \
750         const type *p;                                                          \
751         AVIOContext *s = NULL;                                                  \
752         uint8_t *ret;                                                           \
753         int len;                                                                \
754                                                                                 \
755         if (avio_open_dyn_buf(&s) < 0)                                          \
756             exit_program(1);                                                    \
757                                                                                 \
758         for (p = ost->enc->supported_list; *p != none; p++) {                   \
759             get_name(*p);                                                       \
760             avio_printf(s, "%s" separator, name);                               \
761         }                                                                       \
762         len = avio_close_dyn_buf(s, &ret);                                      \
763         ret[len - 1] = 0;                                                       \
764         return ret;                                                             \
765     } else                                                                      \
766         return NULL;                                                            \
767 }
768
769 #define GET_PIX_FMT_NAME(pix_fmt)\
770     const char *name = av_get_pix_fmt_name(pix_fmt);
771
772 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
773 //                   GET_PIX_FMT_NAME, ":")
774
775 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
776     const char *name = av_get_sample_fmt_name(sample_fmt)
777
778 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
779                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
780
781 #define GET_SAMPLE_RATE_NAME(rate)\
782     char name[16];\
783     snprintf(name, sizeof(name), "%d", rate);
784
785 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
786                   GET_SAMPLE_RATE_NAME, ",")
787
788 #define GET_CH_LAYOUT_NAME(ch_layout)\
789     char name[16];\
790     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
791
792 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
793                   GET_CH_LAYOUT_NAME, ",")
794
795 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
796                                    AVFilterContext **out_filter)
797 {
798     InputStream  *ist = fg->inputs[0]->ist;
799     OutputStream *ost = fg->outputs[0]->ost;
800     AVCodecContext *codec  = ost->st->codec;
801     AVCodecContext *icodec = ist->st->codec;
802     char *sample_fmts, *sample_rates, *channel_layouts;
803     char args[256];
804     int ret;
805
806     avfilter_graph_free(&fg->graph);
807     if (!(fg->graph = avfilter_graph_alloc()))
808         return AVERROR(ENOMEM);
809
810 #ifdef SRCA
811     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
812              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
813 #else
814     snprintf(args, sizeof(args), "%d/%d:%d:%s:"
815              "0x%"PRIx64, ist->st->time_base.num,
816 #endif
817              ist->st->time_base.den, icodec->sample_rate,
818              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
819     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
820                                        avfilter_get_by_name("abuffer"),
821                                        "src", args, NULL, fg->graph);
822     if (ret < 0)
823         return ret;
824
825     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
826                                        avfilter_get_by_name("abuffersink_old"),
827                                        "out", NULL, NULL, fg->graph);
828     if (ret < 0)
829         return ret;
830
831     *in_filter  = fg->inputs[0]->filter;
832     *out_filter = fg->outputs[0]->filter;
833
834     if (codec->channels && !codec->channel_layout)
835         codec->channel_layout = av_get_default_channel_layout(codec->channels);
836
837     sample_fmts     = choose_sample_fmts(ost);
838     sample_rates    = choose_sample_rates(ost);
839     channel_layouts = choose_channel_layouts(ost);
840     if (sample_fmts || sample_rates || channel_layouts) {
841         AVFilterContext *format;
842         char args[256];
843         int len = 0;
844
845         if (sample_fmts)
846             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
847                             sample_fmts);
848         if (sample_rates)
849             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
850                             sample_rates);
851         if (channel_layouts)
852             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
853                             channel_layouts);
854         args[len - 1] = 0;
855
856         av_freep(&sample_fmts);
857         av_freep(&sample_rates);
858         av_freep(&channel_layouts);
859
860         ret = avfilter_graph_create_filter(&format,
861                                            avfilter_get_by_name("aformat"),
862                                            "aformat", args, NULL, fg->graph);
863         if (ret < 0)
864             return ret;
865
866         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
867         if (ret < 0)
868             return ret;
869
870         *out_filter = format;
871     }
872
873     if (audio_volume != 256) {
874         AVFilterContext *volume;
875         char args[256];
876
877         snprintf(args, sizeof(args), "%lf", audio_volume / 256.);
878         av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Used the "
879                "volume audio filter instead (-af volume=%s).\n", args);
880
881         ret = avfilter_graph_create_filter(&volume,
882                                            avfilter_get_by_name("volume"),
883                                            "volume", args, NULL, fg->graph);
884         if (ret < 0)
885             return ret;
886
887         ret = avfilter_link(*in_filter, 0, volume, 0);
888         if (ret < 0)
889             return ret;
890
891         *in_filter = volume;
892     }
893
894     return 0;
895 }
896
897 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
898                                    AVFilterContext **out_filter)
899 {
900     InputStream  *ist = fg->inputs[0]->ist;
901     OutputStream *ost = fg->outputs[0]->ost;
902     AVFilterContext *filter;
903     AVCodecContext *codec = ost->st->codec;
904     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
905     char *pix_fmts;
906     AVRational sample_aspect_ratio;
907     char args[255];
908     int ret;
909
910     if (ist->st->sample_aspect_ratio.num) {
911         sample_aspect_ratio = ist->st->sample_aspect_ratio;
912     } else
913         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
914
915     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
916              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
917              sample_aspect_ratio.num, sample_aspect_ratio.den, SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
918
919     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
920                                        avfilter_get_by_name("buffer"),
921                                        "src", args, NULL, fg->graph);
922     if (ret < 0)
923         return ret;
924
925 #if FF_API_OLD_VSINK_API
926     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
927                                        avfilter_get_by_name("buffersink"),
928                                        "out", NULL, NULL, fg->graph);
929 #else
930     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
931                                        avfilter_get_by_name("buffersink"),
932                                        "out", NULL, buffersink_params, fg->graph);
933 #endif
934     av_freep(&buffersink_params);
935
936     if (ret < 0)
937         return ret;
938     *in_filter  = fg->inputs[0]->filter;
939     *out_filter = fg->outputs[0]->filter;
940
941     if (codec->width || codec->height) {
942         snprintf(args, 255, "%d:%d:flags=0x%X",
943                  codec->width,
944                  codec->height,
945                  (unsigned)ost->sws_flags);
946         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
947                                                 NULL, args, NULL, fg->graph)) < 0)
948             return ret;
949         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
950             return ret;
951         *in_filter = filter;
952     }
953
954     if ((pix_fmts = choose_pix_fmts(ost))) {
955         if ((ret = avfilter_graph_create_filter(&filter,
956                                                 avfilter_get_by_name("format"),
957                                                 "format", pix_fmts, NULL,
958                                                 fg->graph)) < 0)
959             return ret;
960         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
961             return ret;
962
963         *out_filter = filter;
964         av_freep(&pix_fmts);
965     }
966
967     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
968     fg->graph->scale_sws_opts = av_strdup(args);
969
970     return 0;
971 }
972
973 static int configure_simple_filtergraph(FilterGraph *fg)
974 {
975     OutputStream *ost = fg->outputs[0]->ost;
976     AVFilterContext *in_filter, *out_filter;
977     int ret;
978
979     avfilter_graph_free(&fg->graph);
980     fg->graph = avfilter_graph_alloc();
981     if (!fg->graph)
982         return AVERROR(ENOMEM);
983
984     switch (ost->st->codec->codec_type) {
985     case AVMEDIA_TYPE_VIDEO:
986         ret = configure_video_filters(fg, &in_filter, &out_filter);
987         break;
988     case AVMEDIA_TYPE_AUDIO:
989         ret = configure_audio_filters(fg, &in_filter, &out_filter);
990         break;
991     default: av_assert0(0);
992     }
993     if (ret < 0)
994         return ret;
995
996     if (ost->avfilter) {
997         AVFilterInOut *outputs = avfilter_inout_alloc();
998         AVFilterInOut *inputs  = avfilter_inout_alloc();
999
1000         outputs->name    = av_strdup("in");
1001         outputs->filter_ctx = in_filter;
1002         outputs->pad_idx = 0;
1003         outputs->next    = NULL;
1004
1005         inputs->name    = av_strdup("out");
1006         inputs->filter_ctx = out_filter;
1007         inputs->pad_idx = 0;
1008         inputs->next    = NULL;
1009
1010         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
1011             return ret;
1012         av_freep(&ost->avfilter);
1013     } else {
1014         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
1015             return ret;
1016     }
1017
1018     if (ost->keep_pix_fmt)
1019         avfilter_graph_set_auto_convert(fg->graph,
1020                                         AVFILTER_AUTO_CONVERT_NONE);
1021
1022     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1023         return ret;
1024
1025     ost->filter = fg->outputs[0];
1026
1027     return 0;
1028 }
1029
1030 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1031 {
1032     FilterGraph *fg = av_mallocz(sizeof(*fg));
1033
1034     if (!fg)
1035         exit_program(1);
1036     fg->index = nb_filtergraphs;
1037
1038     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1039                              fg->nb_outputs + 1);
1040     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1041         exit_program(1);
1042     fg->outputs[0]->ost   = ost;
1043     fg->outputs[0]->graph = fg;
1044
1045     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1046                             fg->nb_inputs + 1);
1047     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1048         exit_program(1);
1049     fg->inputs[0]->ist   = ist;
1050     fg->inputs[0]->graph = fg;
1051
1052     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1053                               &ist->nb_filters, ist->nb_filters + 1);
1054     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1055
1056     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1057                               &nb_filtergraphs, nb_filtergraphs + 1);
1058     filtergraphs[nb_filtergraphs - 1] = fg;
1059
1060     return fg;
1061 }
1062
1063 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1064 {
1065     InputStream *ist = NULL;
1066     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1067     int i;
1068
1069     // TODO: support other filter types
1070     if (type != AVMEDIA_TYPE_VIDEO) {
1071         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
1072         exit_program(1);
1073     }
1074
1075     if (in->name) {
1076         AVFormatContext *s;
1077         AVStream       *st = NULL;
1078         char *p;
1079         int file_idx = strtol(in->name, &p, 0);
1080
1081         if (file_idx < 0 || file_idx >= nb_input_files) {
1082             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1083                    file_idx, fg->graph_desc);
1084             exit_program(1);
1085         }
1086         s = input_files[file_idx]->ctx;
1087
1088         for (i = 0; i < s->nb_streams; i++) {
1089             if (s->streams[i]->codec->codec_type != type)
1090                 continue;
1091             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1092                 st = s->streams[i];
1093                 break;
1094             }
1095         }
1096         if (!st) {
1097             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1098                    "matches no streams.\n", p, fg->graph_desc);
1099             exit_program(1);
1100         }
1101         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1102     } else {
1103         /* find the first unused stream of corresponding type */
1104         for (i = 0; i < nb_input_streams; i++) {
1105             ist = input_streams[i];
1106             if (ist->st->codec->codec_type == type && ist->discard)
1107                 break;
1108         }
1109         if (i == nb_input_streams) {
1110             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1111                    "unlabeled input pad %d on filter %s", in->pad_idx,
1112                    in->filter_ctx->name);
1113             exit_program(1);
1114         }
1115     }
1116     ist->discard         = 0;
1117     ist->decoding_needed = 1;
1118     ist->st->discard = AVDISCARD_NONE;
1119
1120     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1121                             &fg->nb_inputs, fg->nb_inputs + 1);
1122     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1123         exit_program(1);
1124     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1125     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1126
1127     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1128                               &ist->nb_filters, ist->nb_filters + 1);
1129     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1130 }
1131
1132 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1133 {
1134     char *pix_fmts;
1135     AVCodecContext *codec = ofilter->ost->st->codec;
1136     AVFilterContext *last_filter = out->filter_ctx;
1137     int pad_idx = out->pad_idx;
1138     int ret;
1139     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1140
1141 #if FF_API_OLD_VSINK_API
1142     ret = avfilter_graph_create_filter(&ofilter->filter,
1143                                        avfilter_get_by_name("buffersink"),
1144                                        "out", NULL, NULL, fg->graph);
1145 #else
1146     ret = avfilter_graph_create_filter(&ofilter->filter,
1147                                        avfilter_get_by_name("buffersink"),
1148                                        "out", NULL, buffersink_params, fg->graph);
1149 #endif
1150     av_freep(&buffersink_params);
1151
1152     if (ret < 0)
1153         return ret;
1154
1155     if (codec->width || codec->height) {
1156         char args[255];
1157         AVFilterContext *filter;
1158
1159         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1160                  codec->width,
1161                  codec->height,
1162                  (unsigned)ofilter->ost->sws_flags);
1163         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1164                                                 NULL, args, NULL, fg->graph)) < 0)
1165             return ret;
1166         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1167             return ret;
1168
1169         last_filter = filter;
1170         pad_idx = 0;
1171     }
1172
1173     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1174         AVFilterContext *filter;
1175         if ((ret = avfilter_graph_create_filter(&filter,
1176                                                 avfilter_get_by_name("format"),
1177                                                 "format", pix_fmts, NULL,
1178                                                 fg->graph)) < 0)
1179             return ret;
1180         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1181             return ret;
1182
1183         last_filter = filter;
1184         pad_idx     = 0;
1185         av_freep(&pix_fmts);
1186     }
1187
1188     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1189         return ret;
1190
1191     return 0;
1192 }
1193
1194 static int configure_complex_filter(FilterGraph *fg)
1195 {
1196     AVFilterInOut *inputs, *outputs, *cur;
1197     int ret, i, init = !fg->graph;
1198
1199     avfilter_graph_free(&fg->graph);
1200     if (!(fg->graph = avfilter_graph_alloc()))
1201         return AVERROR(ENOMEM);
1202
1203     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1204         return ret;
1205
1206     for (cur = inputs; init && cur; cur = cur->next)
1207         init_input_filter(fg, cur);
1208
1209     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1210         InputFilter *ifilter = fg->inputs[i];
1211         InputStream     *ist = ifilter->ist;
1212         AVRational       sar;
1213         char            args[255];
1214
1215         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1216                                                  ist->st->codec->sample_aspect_ratio;
1217         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1218                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1219                  sar.num, sar.den);
1220
1221         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1222                                                 avfilter_get_by_name("buffer"), cur->name,
1223                                                 args, NULL, fg->graph)) < 0)
1224             return ret;
1225         if ((ret = avfilter_link(ifilter->filter, 0,
1226                                  cur->filter_ctx, cur->pad_idx)) < 0)
1227             return ret;
1228     }
1229     avfilter_inout_free(&inputs);
1230
1231     if (!init) {
1232         /* we already know the mappings between lavfi outputs and output streams,
1233          * so we can finish the setup */
1234         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1235             configure_output_filter(fg, fg->outputs[i], cur);
1236         avfilter_inout_free(&outputs);
1237
1238         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1239             return ret;
1240     } else {
1241         /* wait until output mappings are processed */
1242         for (cur = outputs; cur;) {
1243             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1244                                      &fg->nb_outputs, fg->nb_outputs + 1);
1245             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1246                 exit_program(1);
1247             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1248             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1249             cur = cur->next;
1250             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1251         }
1252     }
1253
1254     return 0;
1255 }
1256
1257 static int configure_complex_filters(void)
1258 {
1259     int i, ret = 0;
1260
1261     for (i = 0; i < nb_filtergraphs; i++)
1262         if (!filtergraphs[i]->graph &&
1263             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1264             return ret;
1265     return 0;
1266 }
1267
1268 static int configure_filtergraph(FilterGraph *fg)
1269 {
1270     return fg->graph_desc ? configure_complex_filter(fg) :
1271                             configure_simple_filtergraph(fg);
1272 }
1273
1274 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1275 {
1276     int i;
1277     for (i = 0; i < fg->nb_inputs; i++)
1278         if (fg->inputs[i]->ist == ist)
1279             return 1;
1280     return 0;
1281 }
1282
1283 static void term_exit(void)
1284 {
1285     av_log(NULL, AV_LOG_QUIET, "%s", "");
1286 #if HAVE_TERMIOS_H
1287     if(restore_tty)
1288         tcsetattr (0, TCSANOW, &oldtty);
1289 #endif
1290 }
1291
1292 static volatile int received_sigterm = 0;
1293
1294 static void sigterm_handler(int sig)
1295 {
1296     received_sigterm = sig;
1297     received_nb_signals++;
1298     term_exit();
1299     if(received_nb_signals > 3)
1300         exit(123);
1301 }
1302
1303 static void term_init(void)
1304 {
1305 #if HAVE_TERMIOS_H
1306     if(!run_as_daemon){
1307         struct termios tty;
1308
1309         if (tcgetattr (0, &tty) == 0) {
1310             oldtty = tty;
1311             restore_tty = 1;
1312             atexit(term_exit);
1313
1314             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1315                              |INLCR|IGNCR|ICRNL|IXON);
1316             tty.c_oflag |= OPOST;
1317             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1318             tty.c_cflag &= ~(CSIZE|PARENB);
1319             tty.c_cflag |= CS8;
1320             tty.c_cc[VMIN] = 1;
1321             tty.c_cc[VTIME] = 0;
1322
1323             tcsetattr (0, TCSANOW, &tty);
1324         }
1325         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1326     }
1327 #endif
1328     avformat_network_deinit();
1329
1330     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1331     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1332 #ifdef SIGXCPU
1333     signal(SIGXCPU, sigterm_handler);
1334 #endif
1335 }
1336
1337 /* read a key without blocking */
1338 static int read_key(void)
1339 {
1340     unsigned char ch;
1341 #if HAVE_TERMIOS_H
1342     int n = 1;
1343     struct timeval tv;
1344     fd_set rfds;
1345
1346     FD_ZERO(&rfds);
1347     FD_SET(0, &rfds);
1348     tv.tv_sec = 0;
1349     tv.tv_usec = 0;
1350     n = select(1, &rfds, NULL, NULL, &tv);
1351     if (n > 0) {
1352         n = read(0, &ch, 1);
1353         if (n == 1)
1354             return ch;
1355
1356         return n;
1357     }
1358 #elif HAVE_KBHIT
1359 #    if HAVE_PEEKNAMEDPIPE
1360     static int is_pipe;
1361     static HANDLE input_handle;
1362     DWORD dw, nchars;
1363     if(!input_handle){
1364         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1365         is_pipe = !GetConsoleMode(input_handle, &dw);
1366     }
1367
1368     if (stdin->_cnt > 0) {
1369         read(0, &ch, 1);
1370         return ch;
1371     }
1372     if (is_pipe) {
1373         /* When running under a GUI, you will end here. */
1374         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1375             return -1;
1376         //Read it
1377         if(nchars != 0) {
1378             read(0, &ch, 1);
1379             return ch;
1380         }else{
1381             return -1;
1382         }
1383     }
1384 #    endif
1385     if(kbhit())
1386         return(getch());
1387 #endif
1388     return -1;
1389 }
1390
1391 static int decode_interrupt_cb(void *ctx)
1392 {
1393     return received_nb_signals > 1;
1394 }
1395
1396 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1397
1398 void av_noreturn exit_program(int ret)
1399 {
1400     int i, j;
1401
1402     for (i = 0; i < nb_filtergraphs; i++) {
1403         avfilter_graph_free(&filtergraphs[i]->graph);
1404         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1405             av_freep(&filtergraphs[i]->inputs[j]);
1406         av_freep(&filtergraphs[i]->inputs);
1407         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1408             av_freep(&filtergraphs[i]->outputs[j]);
1409         av_freep(&filtergraphs[i]->outputs);
1410         av_freep(&filtergraphs[i]);
1411     }
1412     av_freep(&filtergraphs);
1413
1414     /* close files */
1415     for (i = 0; i < nb_output_files; i++) {
1416         AVFormatContext *s = output_files[i]->ctx;
1417         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1418             avio_close(s->pb);
1419         avformat_free_context(s);
1420         av_dict_free(&output_files[i]->opts);
1421         av_freep(&output_files[i]);
1422     }
1423     for (i = 0; i < nb_output_streams; i++) {
1424         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1425         while (bsfc) {
1426             AVBitStreamFilterContext *next = bsfc->next;
1427             av_bitstream_filter_close(bsfc);
1428             bsfc = next;
1429         }
1430         output_streams[i]->bitstream_filters = NULL;
1431
1432         av_freep(&output_streams[i]->filtered_frame);
1433         av_freep(&output_streams[i]);
1434     }
1435     for (i = 0; i < nb_input_files; i++) {
1436         avformat_close_input(&input_files[i]->ctx);
1437         av_freep(&input_files[i]);
1438     }
1439     for (i = 0; i < nb_input_streams; i++) {
1440         av_freep(&input_streams[i]->decoded_frame);
1441         av_dict_free(&input_streams[i]->opts);
1442         free_buffer_pool(input_streams[i]);
1443         av_freep(&input_streams[i]->filters);
1444         av_freep(&input_streams[i]);
1445     }
1446
1447     if (vstats_file)
1448         fclose(vstats_file);
1449     av_free(vstats_filename);
1450
1451     av_freep(&input_streams);
1452     av_freep(&input_files);
1453     av_freep(&output_streams);
1454     av_freep(&output_files);
1455
1456     uninit_opts();
1457
1458     avfilter_uninit();
1459     avformat_network_deinit();
1460
1461     if (received_sigterm) {
1462         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1463                (int) received_sigterm);
1464         exit (255);
1465     }
1466
1467     exit(ret); /* not all OS-es handle main() return value */
1468 }
1469
1470 static void assert_avoptions(AVDictionary *m)
1471 {
1472     AVDictionaryEntry *t;
1473     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1474         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1475         exit_program(1);
1476     }
1477 }
1478
1479 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1480 {
1481     const char *codec_string = encoder ? "encoder" : "decoder";
1482     AVCodec *codec;
1483     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1484         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1485         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1486                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1487                 codec_string, c->codec->name);
1488         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1489         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1490             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1491                    codec_string, codec->name);
1492         exit_program(1);
1493     }
1494 }
1495
1496 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1497 {
1498     if (codec && codec->sample_fmts) {
1499         const enum AVSampleFormat *p = codec->sample_fmts;
1500         for (; *p != -1; p++) {
1501             if (*p == st->codec->sample_fmt)
1502                 break;
1503         }
1504         if (*p == -1) {
1505             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1506                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1507             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1508             av_log(NULL, AV_LOG_WARNING,
1509                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1510                    av_get_sample_fmt_name(st->codec->sample_fmt),
1511                    codec->name,
1512                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1513             st->codec->sample_fmt = codec->sample_fmts[0];
1514         }
1515     }
1516 }
1517
1518 static double
1519 get_sync_ipts(const OutputStream *ost, int64_t pts)
1520 {
1521     OutputFile *of = output_files[ost->file_index];
1522     return (double)(pts - of->start_time) / AV_TIME_BASE;
1523 }
1524
1525 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1526 {
1527     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1528     AVCodecContext          *avctx = ost->st->codec;
1529     int ret;
1530
1531     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1532         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1533         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1534
1535     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1536         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1537         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1538             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1539             pkt->pts = pkt->dts = max;
1540         }
1541     }
1542
1543     /*
1544      * Audio encoders may split the packets --  #frames in != #packets out.
1545      * But there is no reordering, so we can limit the number of output packets
1546      * by simply dropping them here.
1547      * Counting encoded video frames needs to be done separately because of
1548      * reordering, see do_video_out()
1549      */
1550     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1551         if (ost->frame_number >= ost->max_frames) {
1552             av_free_packet(pkt);
1553             return;
1554         }
1555         ost->frame_number++;
1556     }
1557
1558     while (bsfc) {
1559         AVPacket new_pkt = *pkt;
1560         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1561                                            &new_pkt.data, &new_pkt.size,
1562                                            pkt->data, pkt->size,
1563                                            pkt->flags & AV_PKT_FLAG_KEY);
1564         if (a > 0) {
1565             av_free_packet(pkt);
1566             new_pkt.destruct = av_destruct_packet;
1567         } else if (a < 0) {
1568             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1569                    bsfc->filter->name, pkt->stream_index,
1570                    avctx->codec ? avctx->codec->name : "copy");
1571             print_error("", a);
1572             if (exit_on_error)
1573                 exit_program(1);
1574         }
1575         *pkt = new_pkt;
1576
1577         bsfc = bsfc->next;
1578     }
1579
1580     pkt->stream_index = ost->index;
1581     ret = av_interleaved_write_frame(s, pkt);
1582     if (ret < 0) {
1583         print_error("av_interleaved_write_frame()", ret);
1584         exit_program(1);
1585     }
1586 }
1587
1588 // static int check_recording_time(OutputStream *ost)
1589 // {
1590 //     OutputFile *of = output_files[ost->file_index];
1591 //
1592 //     if (of->recording_time != INT64_MAX &&
1593 //         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1594 //                       AV_TIME_BASE_Q) >= 0) {
1595 //         ost->is_past_recording_time = 1;
1596 //         return 0;
1597 //     }
1598 //     return 1;
1599 // }
1600
1601 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1602                          AVFrame *frame)
1603 {
1604     AVCodecContext *enc = ost->st->codec;
1605     AVPacket pkt;
1606     int got_packet = 0;
1607
1608     av_init_packet(&pkt);
1609     pkt.data = NULL;
1610     pkt.size = 0;
1611 #if 0
1612     if (!check_recording_time(ost))
1613         return;
1614 #endif
1615     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1616         frame->pts = ost->sync_opts;
1617     ost->sync_opts = frame->pts + frame->nb_samples;
1618
1619     av_assert0(pkt.size || !pkt.data);
1620     update_benchmark(NULL);
1621     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1622         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1623         exit_program(1);
1624     }
1625     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1626
1627     if (got_packet) {
1628         if (pkt.pts != AV_NOPTS_VALUE)
1629             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1630         if (pkt.dts != AV_NOPTS_VALUE) {
1631             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1632         }
1633         if (pkt.duration > 0)
1634             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1635
1636         if (debug_ts) {
1637             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1638                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1639                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1640                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1641         }
1642
1643         write_frame(s, &pkt, ost);
1644
1645         audio_size += pkt.size;
1646         av_free_packet(&pkt);
1647     }
1648 }
1649
1650 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1651 {
1652     AVCodecContext *dec;
1653     AVPicture *picture2;
1654     AVPicture picture_tmp;
1655     uint8_t *buf = 0;
1656
1657     dec = ist->st->codec;
1658
1659     /* deinterlace : must be done before any resize */
1660     if (do_deinterlace) {
1661         int size;
1662
1663         /* create temporary picture */
1664         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1665         buf  = av_malloc(size);
1666         if (!buf)
1667             return;
1668
1669         picture2 = &picture_tmp;
1670         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1671
1672         if (avpicture_deinterlace(picture2, picture,
1673                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1674             /* if error, do not deinterlace */
1675             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1676             av_free(buf);
1677             buf = NULL;
1678             picture2 = picture;
1679         }
1680     } else {
1681         picture2 = picture;
1682     }
1683
1684     if (picture != picture2)
1685         *picture = *picture2;
1686     *bufp = buf;
1687 }
1688
1689 static void do_subtitle_out(AVFormatContext *s,
1690                             OutputStream *ost,
1691                             InputStream *ist,
1692                             AVSubtitle *sub,
1693                             int64_t pts)
1694 {
1695     static uint8_t *subtitle_out = NULL;
1696     int subtitle_out_max_size = 1024 * 1024;
1697     int subtitle_out_size, nb, i;
1698     AVCodecContext *enc;
1699     AVPacket pkt;
1700
1701     if (pts == AV_NOPTS_VALUE) {
1702         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1703         if (exit_on_error)
1704             exit_program(1);
1705         return;
1706     }
1707
1708     enc = ost->st->codec;
1709
1710     if (!subtitle_out) {
1711         subtitle_out = av_malloc(subtitle_out_max_size);
1712     }
1713
1714     /* Note: DVB subtitle need one packet to draw them and one other
1715        packet to clear them */
1716     /* XXX: signal it in the codec context ? */
1717     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1718         nb = 2;
1719     else
1720         nb = 1;
1721
1722     for (i = 0; i < nb; i++) {
1723         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1724
1725         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1726         // start_display_time is required to be 0
1727         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1728         sub->end_display_time  -= sub->start_display_time;
1729         sub->start_display_time = 0;
1730         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1731                                                     subtitle_out_max_size, sub);
1732         if (subtitle_out_size < 0) {
1733             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1734             exit_program(1);
1735         }
1736
1737         av_init_packet(&pkt);
1738         pkt.data = subtitle_out;
1739         pkt.size = subtitle_out_size;
1740         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1741         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1742             /* XXX: the pts correction is handled here. Maybe handling
1743                it in the codec would be better */
1744             if (i == 0)
1745                 pkt.pts += 90 * sub->start_display_time;
1746             else
1747                 pkt.pts += 90 * sub->end_display_time;
1748         }
1749         write_frame(s, &pkt, ost);
1750     }
1751 }
1752
1753 static double psnr(double d)
1754 {
1755     return -10.0 * log(d) / log(10.0);
1756 }
1757
1758 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1759                            int frame_size)
1760 {
1761     AVCodecContext *enc;
1762     int frame_number;
1763     double ti1, bitrate, avg_bitrate;
1764
1765     /* this is executed just the first time do_video_stats is called */
1766     if (!vstats_file) {
1767         vstats_file = fopen(vstats_filename, "w");
1768         if (!vstats_file) {
1769             perror("fopen");
1770             exit_program(1);
1771         }
1772     }
1773
1774     enc = ost->st->codec;
1775     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1776         frame_number = ost->frame_number;
1777         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1778         if (enc->flags&CODEC_FLAG_PSNR)
1779             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1780
1781         fprintf(vstats_file,"f_size= %6d ", frame_size);
1782         /* compute pts value */
1783         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1784         if (ti1 < 0.01)
1785             ti1 = 0.01;
1786
1787         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1788         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1789         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1790                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1791         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1792     }
1793 }
1794
1795
1796 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1797                          AVFrame *in_picture, float quality)
1798 {
1799     int nb_frames, i, ret, format_video_sync;
1800     AVCodecContext *enc;
1801     double sync_ipts, delta;
1802     double duration = 0;
1803     int frame_size = 0;
1804     InputStream *ist = NULL;
1805
1806     if (ost->source_index >= 0)
1807         ist = input_streams[ost->source_index];
1808
1809     enc = ost->st->codec;
1810
1811     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1812         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1813
1814     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1815     delta = sync_ipts - ost->sync_opts + duration;
1816
1817     /* by default, we output a single frame */
1818     nb_frames = 1;
1819
1820     format_video_sync = video_sync_method;
1821     if (format_video_sync == VSYNC_AUTO)
1822         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1823
1824     switch (format_video_sync) {
1825     case VSYNC_CFR:
1826         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1827         if (delta < -1.1)
1828             nb_frames = 0;
1829         else if (delta > 1.1)
1830             nb_frames = lrintf(delta);
1831         break;
1832     case VSYNC_VFR:
1833         if (delta <= -0.6)
1834             nb_frames = 0;
1835         else if (delta > 0.6)
1836             ost->sync_opts = lrint(sync_ipts);
1837         break;
1838     case VSYNC_DROP:
1839     case VSYNC_PASSTHROUGH:
1840         ost->sync_opts = lrint(sync_ipts);
1841         break;
1842     default:
1843         av_assert0(0);
1844     }
1845
1846     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1847     if (nb_frames == 0) {
1848         nb_frames_drop++;
1849         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1850         return;
1851     } else if (nb_frames > 1) {
1852         nb_frames_dup += nb_frames - 1;
1853         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1854     }
1855
1856     /* duplicates frame if needed */
1857     for (i = 0; i < nb_frames; i++) {
1858         AVPacket pkt;
1859         av_init_packet(&pkt);
1860         pkt.data = NULL;
1861         pkt.size = 0;
1862
1863         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1864             enc->codec->id == CODEC_ID_RAWVIDEO) {
1865             /* raw pictures are written as AVPicture structure to
1866                avoid any copies. We support temporarily the older
1867                method. */
1868             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1869             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1870             pkt.data   = (uint8_t *)in_picture;
1871             pkt.size   =  sizeof(AVPicture);
1872             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1873             pkt.flags |= AV_PKT_FLAG_KEY;
1874
1875             write_frame(s, &pkt, ost);
1876         } else {
1877             int got_packet;
1878             AVFrame big_picture;
1879
1880             big_picture = *in_picture;
1881             /* better than nothing: use input picture interlaced
1882                settings */
1883             big_picture.interlaced_frame = in_picture->interlaced_frame;
1884             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1885                 if (ost->top_field_first == -1)
1886                     big_picture.top_field_first = in_picture->top_field_first;
1887                 else
1888                     big_picture.top_field_first = !!ost->top_field_first;
1889             }
1890
1891             /* handles same_quant here. This is not correct because it may
1892                not be a global option */
1893             big_picture.quality = quality;
1894             if (!enc->me_threshold)
1895                 big_picture.pict_type = 0;
1896             big_picture.pts = ost->sync_opts;
1897             if (ost->forced_kf_index < ost->forced_kf_count &&
1898                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1899                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1900                 ost->forced_kf_index++;
1901             }
1902             update_benchmark(NULL);
1903             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1904             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1905             if (ret < 0) {
1906                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1907                 exit_program(1);
1908             }
1909
1910             if (got_packet) {
1911                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1912                     pkt.pts = ost->sync_opts;
1913
1914                 if (pkt.pts != AV_NOPTS_VALUE)
1915                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1916                 if (pkt.dts != AV_NOPTS_VALUE)
1917                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1918
1919                 if (debug_ts) {
1920                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1921                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1922                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1923                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1924                 }
1925
1926                 write_frame(s, &pkt, ost);
1927                 frame_size = pkt.size;
1928                 video_size += pkt.size;
1929                 av_free_packet(&pkt);
1930
1931                 /* if two pass, output log */
1932                 if (ost->logfile && enc->stats_out) {
1933                     fprintf(ost->logfile, "%s", enc->stats_out);
1934                 }
1935             }
1936         }
1937         ost->sync_opts++;
1938         /*
1939          * For video, number of frames in == number of packets out.
1940          * But there may be reordering, so we can't throw away frames on encoder
1941          * flush, we need to limit them here, before they go into encoder.
1942          */
1943         ost->frame_number++;
1944     }
1945     if (vstats_filename && frame_size)
1946         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1947 }
1948
1949 /* check for new output on any of the filtergraphs */
1950 static int poll_filters(void)
1951 {
1952     AVFilterBufferRef *picref;
1953     AVFrame *filtered_frame = NULL;
1954     int i, ret, ret_all;
1955     unsigned nb_success, nb_eof;
1956     int64_t frame_pts;
1957
1958     while (1) {
1959         /* Reap all buffers present in the buffer sinks */
1960         for (i = 0; i < nb_output_streams; i++) {
1961             OutputStream *ost = output_streams[i];
1962             OutputFile    *of = output_files[ost->file_index];
1963             int ret = 0;
1964
1965             if (!ost->filter || ost->is_past_recording_time)
1966                 continue;
1967
1968             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1969                 return AVERROR(ENOMEM);
1970             } else
1971                 avcodec_get_frame_defaults(ost->filtered_frame);
1972             filtered_frame = ost->filtered_frame;
1973
1974             while (1) {
1975                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
1976                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1977                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1978                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1979                                                     ost->st->codec->frame_size);
1980                 else
1981 #ifdef SINKA
1982                     ret = av_buffersink_read(ost->filter->filter, &picref);
1983 #else
1984                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1985                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
1986 #endif
1987                 if (ret < 0) {
1988                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1989                         char buf[256];
1990                         av_strerror(ret, buf, sizeof(buf));
1991                         av_log(NULL, AV_LOG_WARNING,
1992                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1993                     }
1994                     break;
1995                 }
1996                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
1997                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1998                 else if (picref->pts != AV_NOPTS_VALUE)
1999                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
2000                                                     ost->filter->filter->inputs[0]->time_base,
2001                                                     ost->st->codec->time_base) -
2002                                         av_rescale_q(of->start_time,
2003                                                     AV_TIME_BASE_Q,
2004                                                     ost->st->codec->time_base);
2005                 //if (ost->source_index >= 0)
2006                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2007
2008                 if (of->start_time && filtered_frame->pts < of->start_time)
2009                     return 0;
2010
2011                 switch (ost->filter->filter->inputs[0]->type) {
2012                 case AVMEDIA_TYPE_VIDEO:
2013                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2014                     filtered_frame->pts = frame_pts;
2015                     if (!ost->frame_aspect_ratio)
2016                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2017
2018                     do_video_out(of->ctx, ost, filtered_frame,
2019                                  same_quant ? ost->last_quality :
2020                                               ost->st->codec->global_quality);
2021                     break;
2022                 case AVMEDIA_TYPE_AUDIO:
2023                     avfilter_copy_buf_props(filtered_frame, picref);
2024                     filtered_frame->pts = frame_pts;
2025                     do_audio_out(of->ctx, ost, filtered_frame);
2026                     break;
2027                 default:
2028                     // TODO support subtitle filters
2029                     av_assert0(0);
2030                 }
2031
2032                 avfilter_unref_buffer(picref);
2033             }
2034         }
2035         /* Request frames through all the graphs */
2036         ret_all = nb_success = nb_eof = 0;
2037         for (i = 0; i < nb_filtergraphs; i++) {
2038             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2039             if (!ret) {
2040                 nb_success++;
2041             } else if (ret == AVERROR_EOF) {
2042                 nb_eof++;
2043             } else if (ret != AVERROR(EAGAIN)) {
2044                 char buf[256];
2045                 av_strerror(ret, buf, sizeof(buf));
2046                 av_log(NULL, AV_LOG_WARNING,
2047                        "Error in request_frame(): %s\n", buf);
2048                 ret_all = ret;
2049             }
2050         }
2051         if (!nb_success)
2052             break;
2053         /* Try again if anything succeeded */
2054     }
2055     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2056 }
2057
2058 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2059 {
2060     char buf[1024];
2061     OutputStream *ost;
2062     AVFormatContext *oc;
2063     int64_t total_size;
2064     AVCodecContext *enc;
2065     int frame_number, vid, i;
2066     double bitrate;
2067     int64_t pts = INT64_MAX;
2068     static int64_t last_time = -1;
2069     static int qp_histogram[52];
2070     int hours, mins, secs, us;
2071
2072     if (!print_stats && !is_last_report)
2073         return;
2074
2075     if (!is_last_report) {
2076         if (last_time == -1) {
2077             last_time = cur_time;
2078             return;
2079         }
2080         if ((cur_time - last_time) < 500000)
2081             return;
2082         last_time = cur_time;
2083     }
2084
2085
2086     oc = output_files[0]->ctx;
2087
2088     total_size = avio_size(oc->pb);
2089     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2090         total_size = avio_tell(oc->pb);
2091         if (total_size < 0)
2092             total_size = 0;
2093     }
2094
2095     buf[0] = '\0';
2096     vid = 0;
2097     for (i = 0; i < nb_output_streams; i++) {
2098         float q = -1;
2099         ost = output_streams[i];
2100         enc = ost->st->codec;
2101         if (!ost->stream_copy && enc->coded_frame)
2102             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2103         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2104             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2105         }
2106         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2107             float fps, t = (cur_time-timer_start) / 1000000.0;
2108
2109             frame_number = ost->frame_number;
2110             fps = t > 1 ? frame_number / t : 0;
2111             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2112                      frame_number, fps < 9.95, fps, q);
2113             if (is_last_report)
2114                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2115             if (qp_hist) {
2116                 int j;
2117                 int qp = lrintf(q);
2118                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2119                     qp_histogram[qp]++;
2120                 for (j = 0; j < 32; j++)
2121                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2122             }
2123             if (enc->flags&CODEC_FLAG_PSNR) {
2124                 int j;
2125                 double error, error_sum = 0;
2126                 double scale, scale_sum = 0;
2127                 char type[3] = { 'Y','U','V' };
2128                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2129                 for (j = 0; j < 3; j++) {
2130                     if (is_last_report) {
2131                         error = enc->error[j];
2132                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2133                     } else {
2134                         error = enc->coded_frame->error[j];
2135                         scale = enc->width * enc->height * 255.0 * 255.0;
2136                     }
2137                     if (j)
2138                         scale /= 4;
2139                     error_sum += error;
2140                     scale_sum += scale;
2141                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2142                 }
2143                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2144             }
2145             vid = 1;
2146         }
2147         /* compute min output value */
2148         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2149                                       ost->st->time_base, AV_TIME_BASE_Q));
2150     }
2151
2152     secs = pts / AV_TIME_BASE;
2153     us = pts % AV_TIME_BASE;
2154     mins = secs / 60;
2155     secs %= 60;
2156     hours = mins / 60;
2157     mins %= 60;
2158
2159     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2160
2161     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2162              "size=%8.0fkB time=", total_size / 1024.0);
2163     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2164              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2165              (100 * us) / AV_TIME_BASE);
2166     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2167              "bitrate=%6.1fkbits/s", bitrate);
2168
2169     if (nb_frames_dup || nb_frames_drop)
2170         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2171                 nb_frames_dup, nb_frames_drop);
2172
2173     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2174
2175     fflush(stderr);
2176
2177     if (is_last_report) {
2178         int64_t raw= audio_size + video_size + extra_size;
2179         av_log(NULL, AV_LOG_INFO, "\n");
2180         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2181                video_size / 1024.0,
2182                audio_size / 1024.0,
2183                extra_size / 1024.0,
2184                100.0 * (total_size - raw) / raw
2185         );
2186         if(video_size + audio_size + extra_size == 0){
2187             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2188         }
2189     }
2190 }
2191
2192 static void flush_encoders(void)
2193 {
2194     int i, ret;
2195
2196     for (i = 0; i < nb_output_streams; i++) {
2197         OutputStream   *ost = output_streams[i];
2198         AVCodecContext *enc = ost->st->codec;
2199         AVFormatContext *os = output_files[ost->file_index]->ctx;
2200         int stop_encoding = 0;
2201
2202         if (!ost->encoding_needed)
2203             continue;
2204
2205         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2206             continue;
2207         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2208             continue;
2209
2210         for (;;) {
2211             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2212             const char *desc;
2213             int64_t *size;
2214
2215             switch (ost->st->codec->codec_type) {
2216             case AVMEDIA_TYPE_AUDIO:
2217                 encode = avcodec_encode_audio2;
2218                 desc   = "Audio";
2219                 size   = &audio_size;
2220                 break;
2221             case AVMEDIA_TYPE_VIDEO:
2222                 encode = avcodec_encode_video2;
2223                 desc   = "Video";
2224                 size   = &video_size;
2225                 break;
2226             default:
2227                 stop_encoding = 1;
2228             }
2229
2230             if (encode) {
2231                 AVPacket pkt;
2232                 int got_packet;
2233                 av_init_packet(&pkt);
2234                 pkt.data = NULL;
2235                 pkt.size = 0;
2236
2237                 update_benchmark(NULL);
2238                 ret = encode(enc, &pkt, NULL, &got_packet);
2239                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2240                 if (ret < 0) {
2241                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2242                     exit_program(1);
2243                 }
2244                 *size += pkt.size;
2245                 if (ost->logfile && enc->stats_out) {
2246                     fprintf(ost->logfile, "%s", enc->stats_out);
2247                 }
2248                 if (!got_packet) {
2249                     stop_encoding = 1;
2250                     break;
2251                 }
2252                 if (pkt.pts != AV_NOPTS_VALUE)
2253                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2254                 if (pkt.dts != AV_NOPTS_VALUE)
2255                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2256                 write_frame(os, &pkt, ost);
2257             }
2258
2259             if (stop_encoding)
2260                 break;
2261         }
2262     }
2263 }
2264
2265 /*
2266  * Check whether a packet from ist should be written into ost at this time
2267  */
2268 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2269 {
2270     OutputFile *of = output_files[ost->file_index];
2271     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2272
2273     if (ost->source_index != ist_index)
2274         return 0;
2275
2276     if (of->start_time && ist->pts < of->start_time)
2277         return 0;
2278
2279     if (of->recording_time != INT64_MAX &&
2280         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2281                       (AVRational){ 1, 1000000 }) >= 0) {
2282         ost->is_past_recording_time = 1;
2283         return 0;
2284     }
2285
2286     return 1;
2287 }
2288
2289 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2290 {
2291     OutputFile *of = output_files[ost->file_index];
2292     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2293     AVPicture pict;
2294     AVPacket opkt;
2295
2296     av_init_packet(&opkt);
2297
2298     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2299         !ost->copy_initial_nonkeyframes)
2300         return;
2301
2302     /* force the input stream PTS */
2303     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2304         audio_size += pkt->size;
2305     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2306         video_size += pkt->size;
2307         ost->sync_opts++;
2308     }
2309
2310     if (pkt->pts != AV_NOPTS_VALUE)
2311         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2312     else
2313         opkt.pts = AV_NOPTS_VALUE;
2314
2315     if (pkt->dts == AV_NOPTS_VALUE)
2316         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2317     else
2318         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2319     opkt.dts -= ost_tb_start_time;
2320
2321     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2322     opkt.flags    = pkt->flags;
2323
2324     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2325     if (  ost->st->codec->codec_id != CODEC_ID_H264
2326        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2327        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2328        && ost->st->codec->codec_id != CODEC_ID_VC1
2329        ) {
2330         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2331             opkt.destruct = av_destruct_packet;
2332     } else {
2333         opkt.data = pkt->data;
2334         opkt.size = pkt->size;
2335     }
2336     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2337         /* store AVPicture in AVPacket, as expected by the output format */
2338         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2339         opkt.data = (uint8_t *)&pict;
2340         opkt.size = sizeof(AVPicture);
2341         opkt.flags |= AV_PKT_FLAG_KEY;
2342     }
2343
2344     write_frame(of->ctx, &opkt, ost);
2345     ost->st->codec->frame_number++;
2346     av_free_packet(&opkt);
2347 }
2348
2349 static void rate_emu_sleep(InputStream *ist)
2350 {
2351     if (input_files[ist->file_index]->rate_emu) {
2352         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2353         int64_t now = av_gettime() - ist->start;
2354         if (pts > now)
2355             usleep(pts - now);
2356     }
2357 }
2358
2359 static int guess_input_channel_layout(InputStream *ist)
2360 {
2361     AVCodecContext *dec = ist->st->codec;
2362
2363     if (!dec->channel_layout) {
2364         char layout_name[256];
2365
2366         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2367         if (!dec->channel_layout)
2368             return 0;
2369         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2370                                      dec->channels, dec->channel_layout);
2371         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2372                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2373     }
2374     return 1;
2375 }
2376
2377 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2378 {
2379     AVFrame *decoded_frame;
2380     AVCodecContext *avctx = ist->st->codec;
2381     int i, ret, resample_changed;
2382
2383     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2384         return AVERROR(ENOMEM);
2385     else
2386         avcodec_get_frame_defaults(ist->decoded_frame);
2387     decoded_frame = ist->decoded_frame;
2388
2389     update_benchmark(NULL);
2390     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2391     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2392     if (ret < 0) {
2393         return ret;
2394     }
2395     if (avctx->sample_rate <= 0) {
2396         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2397         return AVERROR_INVALIDDATA;
2398     }
2399
2400     if (!*got_output) {
2401         /* no audio frame */
2402         if (!pkt->size)
2403             for (i = 0; i < ist->nb_filters; i++)
2404 #ifdef SRCA
2405                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2406 #else
2407                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2408 #endif
2409         return ret;
2410     }
2411
2412     /* if the decoder provides a pts, use it instead of the last packet pts.
2413        the decoder could be delaying output by a packet or more. */
2414     if (decoded_frame->pts != AV_NOPTS_VALUE)
2415         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2416     else if (pkt->pts != AV_NOPTS_VALUE) {
2417         decoded_frame->pts = pkt->pts;
2418         pkt->pts           = AV_NOPTS_VALUE;
2419     }else
2420         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2421
2422
2423 #if 1
2424     /* increment next_dts to use for the case where the input stream does not
2425        have timestamps or there are multiple frames in the packet */
2426     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2427                      avctx->sample_rate;
2428     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2429                      avctx->sample_rate;
2430 #endif
2431
2432     rate_emu_sleep(ist);
2433
2434     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2435                        ist->resample_channels       != avctx->channels               ||
2436                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2437                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2438     if (resample_changed) {
2439         char layout1[64], layout2[64];
2440
2441         if (!guess_input_channel_layout(ist)) {
2442             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2443                    "layout for Input Stream #%d.%d\n", ist->file_index,
2444                    ist->st->index);
2445             exit_program(1);
2446         }
2447         decoded_frame->channel_layout = avctx->channel_layout;
2448
2449         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2450                                      ist->resample_channel_layout);
2451         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2452                                      decoded_frame->channel_layout);
2453
2454         av_log(NULL, AV_LOG_INFO,
2455                "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",
2456                ist->file_index, ist->st->index,
2457                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2458                ist->resample_channels, layout1,
2459                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2460                avctx->channels, layout2);
2461
2462         ist->resample_sample_fmt     = decoded_frame->format;
2463         ist->resample_sample_rate    = decoded_frame->sample_rate;
2464         ist->resample_channel_layout = decoded_frame->channel_layout;
2465         ist->resample_channels       = avctx->channels;
2466
2467         for (i = 0; i < nb_filtergraphs; i++)
2468             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2469                 configure_filtergraph(filtergraphs[i]) < 0) {
2470                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2471                 exit_program(1);
2472             }
2473     }
2474
2475     for (i = 0; i < ist->nb_filters; i++) {
2476 #ifdef SRCA
2477         av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
2478 #else
2479         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2480 #endif
2481     }
2482
2483     return ret;
2484 }
2485
2486 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2487 {
2488     AVFrame *decoded_frame;
2489     void *buffer_to_free = NULL;
2490     int i, ret = 0, resample_changed;
2491     int64_t best_effort_timestamp;
2492     AVRational *frame_sample_aspect;
2493     float quality;
2494
2495     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2496         return AVERROR(ENOMEM);
2497     else
2498         avcodec_get_frame_defaults(ist->decoded_frame);
2499     decoded_frame = ist->decoded_frame;
2500     pkt->pts  = *pkt_pts;
2501     pkt->dts  = ist->dts;
2502     *pkt_pts  = AV_NOPTS_VALUE;
2503
2504     update_benchmark(NULL);
2505     ret = avcodec_decode_video2(ist->st->codec,
2506                                 decoded_frame, got_output, pkt);
2507     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2508     if (ret < 0)
2509         return ret;
2510
2511     quality = same_quant ? decoded_frame->quality : 0;
2512     if (!*got_output) {
2513         /* no picture yet */
2514         if (!pkt->size)
2515             for (i = 0; i < ist->nb_filters; i++)
2516 #ifdef SRCA
2517                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2518 #else
2519                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2520 #endif
2521         return ret;
2522     }
2523
2524     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2525     if(best_effort_timestamp != AV_NOPTS_VALUE)
2526         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2527
2528     pkt->size = 0;
2529
2530     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2531
2532     rate_emu_sleep(ist);
2533
2534     if (ist->st->sample_aspect_ratio.num)
2535         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2536
2537     resample_changed = ist->resample_width   != decoded_frame->width  ||
2538                        ist->resample_height  != decoded_frame->height ||
2539                        ist->resample_pix_fmt != decoded_frame->format;
2540     if (resample_changed) {
2541         av_log(NULL, AV_LOG_INFO,
2542                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2543                ist->file_index, ist->st->index,
2544                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2545                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2546
2547         ist->resample_width   = decoded_frame->width;
2548         ist->resample_height  = decoded_frame->height;
2549         ist->resample_pix_fmt = decoded_frame->format;
2550
2551         for (i = 0; i < nb_filtergraphs; i++)
2552             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2553                 configure_filtergraph(filtergraphs[i]) < 0) {
2554                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2555                 exit_program(1);
2556             }
2557     }
2558
2559     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2560     for (i = 0; i < ist->nb_filters; i++) {
2561         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2562                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2563                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2564         // XXX what an ugly hack
2565         if (ist->filters[i]->graph->nb_outputs == 1)
2566             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2567
2568         if (!frame_sample_aspect->num)
2569             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2570         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2571             FrameBuffer      *buf = decoded_frame->opaque;
2572             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2573                                         decoded_frame->data, decoded_frame->linesize,
2574                                         AV_PERM_READ | AV_PERM_PRESERVE,
2575                                         ist->st->codec->width, ist->st->codec->height,
2576                                         ist->st->codec->pix_fmt);
2577
2578             avfilter_copy_frame_props(fb, decoded_frame);
2579             fb->buf->priv           = buf;
2580             fb->buf->free           = filter_release_buffer;
2581
2582             av_assert0(buf->refcount>0);
2583             buf->refcount++;
2584 #ifdef SRCA
2585             av_buffersrc_buffer(ist->filters[i]->filter, fb);
2586         } else
2587         if(av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame)<0) {
2588 #else
2589             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2590                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2591                                  AV_BUFFERSRC_FLAG_NO_COPY);
2592         } else
2593         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2594 #endif
2595             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2596             exit_program(1);
2597         }
2598
2599     }
2600
2601     av_free(buffer_to_free);
2602     return ret;
2603 }
2604
2605 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2606 {
2607     AVSubtitle subtitle;
2608     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2609                                           &subtitle, got_output, pkt);
2610     if (ret < 0)
2611         return ret;
2612     if (!*got_output)
2613         return ret;
2614
2615     rate_emu_sleep(ist);
2616
2617     for (i = 0; i < nb_output_streams; i++) {
2618         OutputStream *ost = output_streams[i];
2619
2620         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2621             continue;
2622
2623         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2624     }
2625
2626     avsubtitle_free(&subtitle);
2627     return ret;
2628 }
2629
2630 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2631 static int output_packet(InputStream *ist, const AVPacket *pkt)
2632 {
2633     int ret = 0, i;
2634     int got_output;
2635     int64_t pkt_pts = AV_NOPTS_VALUE;
2636
2637     AVPacket avpkt;
2638     if (!ist->saw_first_ts) {
2639         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;
2640         ist->pts = 0;
2641         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2642             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2643             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2644         }
2645         ist->saw_first_ts = 1;
2646     }
2647
2648     if (ist->next_dts == AV_NOPTS_VALUE)
2649         ist->next_dts = ist->dts;
2650     if (ist->next_pts == AV_NOPTS_VALUE)
2651         ist->next_pts = ist->pts;
2652
2653     if (pkt == NULL) {
2654         /* EOF handling */
2655         av_init_packet(&avpkt);
2656         avpkt.data = NULL;
2657         avpkt.size = 0;
2658         goto handle_eof;
2659     } else {
2660         avpkt = *pkt;
2661     }
2662
2663     if (pkt->dts != AV_NOPTS_VALUE) {
2664         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2665         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2666             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2667     }
2668     if(pkt->pts != AV_NOPTS_VALUE)
2669         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2670
2671     // while we have more to decode or while the decoder did output something on EOF
2672     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2673         int duration;
2674     handle_eof:
2675
2676         ist->pts = ist->next_pts;
2677         ist->dts = ist->next_dts;
2678
2679         if (avpkt.size && avpkt.size != pkt->size) {
2680             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2681                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2682             ist->showed_multi_packet_warning = 1;
2683         }
2684
2685         switch (ist->st->codec->codec_type) {
2686         case AVMEDIA_TYPE_AUDIO:
2687             ret = transcode_audio    (ist, &avpkt, &got_output);
2688             break;
2689         case AVMEDIA_TYPE_VIDEO:
2690             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2691             if (avpkt.duration) {
2692                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2693             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2694                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2695                 duration = ((int64_t)AV_TIME_BASE *
2696                                 ist->st->codec->time_base.num * ticks) /
2697                                 ist->st->codec->time_base.den;
2698             } else
2699                 duration = 0;
2700
2701             if(ist->dts != AV_NOPTS_VALUE && duration) {
2702                 ist->next_dts += duration;
2703             }else
2704                 ist->next_dts = AV_NOPTS_VALUE;
2705
2706             if (got_output)
2707                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2708             break;
2709         case AVMEDIA_TYPE_SUBTITLE:
2710             ret = transcode_subtitles(ist, &avpkt, &got_output);
2711             break;
2712         default:
2713             return -1;
2714         }
2715
2716         if (ret < 0)
2717             return ret;
2718
2719         avpkt.dts=
2720         avpkt.pts= AV_NOPTS_VALUE;
2721
2722         // touch data and size only if not EOF
2723         if (pkt) {
2724             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2725                 ret = avpkt.size;
2726             avpkt.data += ret;
2727             avpkt.size -= ret;
2728         }
2729         if (!got_output) {
2730             continue;
2731         }
2732     }
2733
2734     /* handle stream copy */
2735     if (!ist->decoding_needed) {
2736         rate_emu_sleep(ist);
2737         ist->dts = ist->next_dts;
2738         switch (ist->st->codec->codec_type) {
2739         case AVMEDIA_TYPE_AUDIO:
2740             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2741                              ist->st->codec->sample_rate;
2742             break;
2743         case AVMEDIA_TYPE_VIDEO:
2744             if (pkt->duration) {
2745                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2746             } else if(ist->st->codec->time_base.num != 0) {
2747                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2748                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2749                                   ist->st->codec->time_base.num * ticks) /
2750                                   ist->st->codec->time_base.den;
2751             }
2752             break;
2753         }
2754         ist->pts = ist->dts;
2755         ist->next_pts = ist->next_dts;
2756     }
2757     for (i = 0; pkt && i < nb_output_streams; i++) {
2758         OutputStream *ost = output_streams[i];
2759
2760         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2761             continue;
2762
2763         do_streamcopy(ist, ost, pkt);
2764     }
2765
2766     return 0;
2767 }
2768
2769 static void print_sdp(void)
2770 {
2771     char sdp[2048];
2772     int i;
2773     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2774
2775     if (!avc)
2776         exit_program(1);
2777     for (i = 0; i < nb_output_files; i++)
2778         avc[i] = output_files[i]->ctx;
2779
2780     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2781     printf("SDP:\n%s\n", sdp);
2782     fflush(stdout);
2783     av_freep(&avc);
2784 }
2785
2786 static int init_input_stream(int ist_index, char *error, int error_len)
2787 {
2788     int i;
2789     InputStream *ist = input_streams[ist_index];
2790
2791     if (ist->decoding_needed) {
2792         AVCodec *codec = ist->dec;
2793         if (!codec) {
2794             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2795                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2796             return AVERROR(EINVAL);
2797         }
2798
2799         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
2800         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2801             ist->st->codec->get_buffer     = codec_get_buffer;
2802             ist->st->codec->release_buffer = codec_release_buffer;
2803             ist->st->codec->opaque         = ist;
2804         }
2805
2806         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2807             av_dict_set(&ist->opts, "threads", "auto", 0);
2808         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2809             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2810                     ist->file_index, ist->st->index);
2811             return AVERROR(EINVAL);
2812         }
2813         assert_codec_experimental(ist->st->codec, 0);
2814         assert_avoptions(ist->opts);
2815     }
2816
2817     ist->next_pts = AV_NOPTS_VALUE;
2818     ist->next_dts = AV_NOPTS_VALUE;
2819     ist->is_start = 1;
2820
2821     return 0;
2822 }
2823
2824 static InputStream *get_input_stream(OutputStream *ost)
2825 {
2826     if (ost->source_index >= 0)
2827         return input_streams[ost->source_index];
2828
2829     if (ost->filter) {
2830         FilterGraph *fg = ost->filter->graph;
2831         int i;
2832
2833         for (i = 0; i < fg->nb_inputs; i++)
2834             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2835                 return fg->inputs[i]->ist;
2836     }
2837
2838     return NULL;
2839 }
2840
2841 static int transcode_init(void)
2842 {
2843     int ret = 0, i, j, k;
2844     AVFormatContext *oc;
2845     AVCodecContext *codec, *icodec;
2846     OutputStream *ost;
2847     InputStream *ist;
2848     char error[1024];
2849     int want_sdp = 1;
2850
2851     /* init framerate emulation */
2852     for (i = 0; i < nb_input_files; i++) {
2853         InputFile *ifile = input_files[i];
2854         if (ifile->rate_emu)
2855             for (j = 0; j < ifile->nb_streams; j++)
2856                 input_streams[j + ifile->ist_index]->start = av_gettime();
2857     }
2858
2859     /* output stream init */
2860     for (i = 0; i < nb_output_files; i++) {
2861         oc = output_files[i]->ctx;
2862         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2863             av_dump_format(oc, i, oc->filename, 1);
2864             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2865             return AVERROR(EINVAL);
2866         }
2867     }
2868
2869     /* init complex filtergraphs */
2870     for (i = 0; i < nb_filtergraphs; i++)
2871         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2872             return ret;
2873
2874     /* for each output stream, we compute the right encoding parameters */
2875     for (i = 0; i < nb_output_streams; i++) {
2876         ost = output_streams[i];
2877         oc  = output_files[ost->file_index]->ctx;
2878         ist = get_input_stream(ost);
2879
2880         if (ost->attachment_filename)
2881             continue;
2882
2883         codec  = ost->st->codec;
2884
2885         if (ist) {
2886             icodec = ist->st->codec;
2887
2888             ost->st->disposition          = ist->st->disposition;
2889             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2890             codec->chroma_sample_location = icodec->chroma_sample_location;
2891         }
2892
2893         if (ost->stream_copy) {
2894             uint64_t extra_size;
2895
2896             av_assert0(ist && !ost->filter);
2897
2898             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2899
2900             if (extra_size > INT_MAX) {
2901                 return AVERROR(EINVAL);
2902             }
2903
2904             /* if stream_copy is selected, no need to decode or encode */
2905             codec->codec_id   = icodec->codec_id;
2906             codec->codec_type = icodec->codec_type;
2907
2908             if (!codec->codec_tag) {
2909                 if (!oc->oformat->codec_tag ||
2910                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2911                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2912                     codec->codec_tag = icodec->codec_tag;
2913             }
2914
2915             codec->bit_rate       = icodec->bit_rate;
2916             codec->rc_max_rate    = icodec->rc_max_rate;
2917             codec->rc_buffer_size = icodec->rc_buffer_size;
2918             codec->field_order    = icodec->field_order;
2919             codec->extradata      = av_mallocz(extra_size);
2920             if (!codec->extradata) {
2921                 return AVERROR(ENOMEM);
2922             }
2923             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2924             codec->extradata_size= icodec->extradata_size;
2925             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2926
2927             codec->time_base = ist->st->time_base;
2928             /*
2929              * Avi is a special case here because it supports variable fps but
2930              * having the fps and timebase differe significantly adds quite some
2931              * overhead
2932              */
2933             if(!strcmp(oc->oformat->name, "avi")) {
2934                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2935                                  && av_q2d(ist->st->time_base) < 1.0/500
2936                     || copy_tb==0){
2937                     codec->time_base = icodec->time_base;
2938                     codec->time_base.num *= icodec->ticks_per_frame;
2939                     codec->time_base.den *= 2;
2940                     codec->ticks_per_frame = 2;
2941                 }
2942             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2943                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2944                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2945             ) {
2946                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2947                                 && av_q2d(ist->st->time_base) < 1.0/500
2948                    || copy_tb==0){
2949                     codec->time_base = icodec->time_base;
2950                     codec->time_base.num *= icodec->ticks_per_frame;
2951                 }
2952             }
2953             av_reduce(&codec->time_base.num, &codec->time_base.den,
2954                         codec->time_base.num, codec->time_base.den, INT_MAX);
2955
2956             switch (codec->codec_type) {
2957             case AVMEDIA_TYPE_AUDIO:
2958                 if (audio_volume != 256) {
2959                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2960                     exit_program(1);
2961                 }
2962                 codec->channel_layout     = icodec->channel_layout;
2963                 codec->sample_rate        = icodec->sample_rate;
2964                 codec->channels           = icodec->channels;
2965                 codec->frame_size         = icodec->frame_size;
2966                 codec->audio_service_type = icodec->audio_service_type;
2967                 codec->block_align        = icodec->block_align;
2968                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2969                     codec->block_align= 0;
2970                 if(codec->codec_id == CODEC_ID_AC3)
2971                     codec->block_align= 0;
2972                 break;
2973             case AVMEDIA_TYPE_VIDEO:
2974                 codec->pix_fmt            = icodec->pix_fmt;
2975                 codec->width              = icodec->width;
2976                 codec->height             = icodec->height;
2977                 codec->has_b_frames       = icodec->has_b_frames;
2978                 if (!codec->sample_aspect_ratio.num) {
2979                     codec->sample_aspect_ratio   =
2980                     ost->st->sample_aspect_ratio =
2981                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2982                         ist->st->codec->sample_aspect_ratio.num ?
2983                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2984                 }
2985                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2986                 break;
2987             case AVMEDIA_TYPE_SUBTITLE:
2988                 codec->width  = icodec->width;
2989                 codec->height = icodec->height;
2990                 break;
2991             case AVMEDIA_TYPE_DATA:
2992             case AVMEDIA_TYPE_ATTACHMENT:
2993                 break;
2994             default:
2995                 abort();
2996             }
2997         } else {
2998             if (!ost->enc)
2999                 ost->enc = avcodec_find_encoder(codec->codec_id);
3000             if (!ost->enc) {
3001                 /* should only happen when a default codec is not present. */
3002                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3003                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3004                 ret = AVERROR(EINVAL);
3005                 goto dump_format;
3006             }
3007
3008             if (ist)
3009                 ist->decoding_needed = 1;
3010             ost->encoding_needed = 1;
3011
3012             if (!ost->filter &&
3013                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3014                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
3015                     FilterGraph *fg;
3016                     fg = init_simple_filtergraph(ist, ost);
3017                     if (configure_simple_filtergraph(fg)) {
3018                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3019                         exit(1);
3020                     }
3021             }
3022
3023             switch (codec->codec_type) {
3024             case AVMEDIA_TYPE_AUDIO:
3025                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
3026                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
3027                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
3028                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
3029                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
3030                 break;
3031             case AVMEDIA_TYPE_VIDEO:
3032                 if (ist && !ost->frame_rate.num)
3033                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
3034                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3035                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3036                     ost->frame_rate = ost->enc->supported_framerates[idx];
3037                 }
3038                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3039                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3040                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3041                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3042                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3043                 }
3044                 for (j = 0; j < ost->forced_kf_count; j++)
3045                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3046                                                          AV_TIME_BASE_Q,
3047                                                          codec->time_base);
3048
3049                 codec->width  = ost->filter->filter->inputs[0]->w;
3050                 codec->height = ost->filter->filter->inputs[0]->h;
3051                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3052                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3053                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3054                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3055                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3056
3057                 if (codec->width   != icodec->width  ||
3058                     codec->height  != icodec->height ||
3059                     codec->pix_fmt != icodec->pix_fmt) {
3060                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3061                 }
3062
3063                 break;
3064             case AVMEDIA_TYPE_SUBTITLE:
3065                 codec->time_base = (AVRational){1, 1000};
3066                 break;
3067             default:
3068                 abort();
3069                 break;
3070             }
3071             /* two pass mode */
3072             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3073                 char logfilename[1024];
3074                 FILE *f;
3075
3076                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3077                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3078                          i);
3079                 if (!strcmp(ost->enc->name, "libx264")) {
3080                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3081                 } else {
3082                     if (codec->flags & CODEC_FLAG_PASS2) {
3083                         char  *logbuffer;
3084                         size_t logbuffer_size;
3085                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3086                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3087                                 logfilename);
3088                             exit_program(1);
3089                         }
3090                         codec->stats_in = logbuffer;
3091                     }
3092                     if (codec->flags & CODEC_FLAG_PASS1) {
3093                         f = fopen(logfilename, "wb");
3094                         if (!f) {
3095                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3096                                 logfilename, strerror(errno));
3097                             exit_program(1);
3098                         }
3099                         ost->logfile = f;
3100                     }
3101                 }
3102             }
3103         }
3104     }
3105
3106     /* open each encoder */
3107     for (i = 0; i < nb_output_streams; i++) {
3108         ost = output_streams[i];
3109         if (ost->encoding_needed) {
3110             AVCodec      *codec = ost->enc;
3111             AVCodecContext *dec = NULL;
3112
3113             if ((ist = get_input_stream(ost)))
3114                 dec = ist->st->codec;
3115             if (dec && dec->subtitle_header) {
3116                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3117                 if (!ost->st->codec->subtitle_header) {
3118                     ret = AVERROR(ENOMEM);
3119                     goto dump_format;
3120                 }
3121                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3122                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3123             }
3124             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3125                 av_dict_set(&ost->opts, "threads", "auto", 0);
3126             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3127                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3128                         ost->file_index, ost->index);
3129                 ret = AVERROR(EINVAL);
3130                 goto dump_format;
3131             }
3132             assert_codec_experimental(ost->st->codec, 1);
3133             assert_avoptions(ost->opts);
3134             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3135                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3136                                              " It takes bits/s as argument, not kbits/s\n");
3137             extra_size += ost->st->codec->extradata_size;
3138
3139             if (ost->st->codec->me_threshold)
3140                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3141         }
3142     }
3143
3144     /* init input streams */
3145     for (i = 0; i < nb_input_streams; i++)
3146         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3147             goto dump_format;
3148
3149     /* discard unused programs */
3150     for (i = 0; i < nb_input_files; i++) {
3151         InputFile *ifile = input_files[i];
3152         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3153             AVProgram *p = ifile->ctx->programs[j];
3154             int discard  = AVDISCARD_ALL;
3155
3156             for (k = 0; k < p->nb_stream_indexes; k++)
3157                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3158                     discard = AVDISCARD_DEFAULT;
3159                     break;
3160                 }
3161             p->discard = discard;
3162         }
3163     }
3164
3165     /* open files and write file headers */
3166     for (i = 0; i < nb_output_files; i++) {
3167         oc = output_files[i]->ctx;
3168         oc->interrupt_callback = int_cb;
3169         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3170             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3171             ret = AVERROR(EINVAL);
3172             goto dump_format;
3173         }
3174 //         assert_avoptions(output_files[i]->opts);
3175         if (strcmp(oc->oformat->name, "rtp")) {
3176             want_sdp = 0;
3177         }
3178     }
3179
3180  dump_format:
3181     /* dump the file output parameters - cannot be done before in case
3182        of stream copy */
3183     for (i = 0; i < nb_output_files; i++) {
3184         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3185     }
3186
3187     /* dump the stream mapping */
3188     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3189     for (i = 0; i < nb_input_streams; i++) {
3190         ist = input_streams[i];
3191
3192         for (j = 0; j < ist->nb_filters; j++) {
3193             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3194             if (ist->filters[j]->graph->graph_desc) {
3195                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3196                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3197                        link->dst->filter->name);
3198                 if (link->dst->input_count > 1)
3199                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3200                 if (nb_filtergraphs > 1)
3201                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3202                 av_log(NULL, AV_LOG_INFO, "\n");
3203             }
3204         }
3205     }
3206
3207     for (i = 0; i < nb_output_streams; i++) {
3208         ost = output_streams[i];
3209
3210         if (ost->attachment_filename) {
3211             /* an attached file */
3212             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3213                    ost->attachment_filename, ost->file_index, ost->index);
3214             continue;
3215         }
3216
3217         if (ost->filter && ost->filter->graph->graph_desc) {
3218             /* output from a complex graph */
3219             AVFilterLink *link = ost->filter->filter->inputs[0];
3220             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3221             if (link->src->output_count > 1)
3222                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3223             if (nb_filtergraphs > 1)
3224                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3225
3226             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3227                    ost->index, ost->enc ? ost->enc->name : "?");
3228             continue;
3229         }
3230
3231         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3232                input_streams[ost->source_index]->file_index,
3233                input_streams[ost->source_index]->st->index,
3234                ost->file_index,
3235                ost->index);
3236         if (ost->sync_ist != input_streams[ost->source_index])
3237             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3238                    ost->sync_ist->file_index,
3239                    ost->sync_ist->st->index);
3240         if (ost->stream_copy)
3241             av_log(NULL, AV_LOG_INFO, " (copy)");
3242         else
3243             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3244                    input_streams[ost->source_index]->dec->name : "?",
3245                    ost->enc ? ost->enc->name : "?");
3246         av_log(NULL, AV_LOG_INFO, "\n");
3247     }
3248
3249     if (ret) {
3250         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3251         return ret;
3252     }
3253
3254     if (want_sdp) {
3255         print_sdp();
3256     }
3257
3258     return 0;
3259 }
3260
3261 /*
3262  * The following code is the main loop of the file converter
3263  */
3264 static int transcode(void)
3265 {
3266     int ret, i;
3267     AVFormatContext *is, *os;
3268     OutputStream *ost;
3269     InputStream *ist;
3270     uint8_t *no_packet;
3271     int no_packet_count = 0;
3272     int64_t timer_start;
3273     int key;
3274
3275     if (!(no_packet = av_mallocz(nb_input_files)))
3276         exit_program(1);
3277
3278     ret = transcode_init();
3279     if (ret < 0)
3280         goto fail;
3281
3282     if (!using_stdin) {
3283         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3284     }
3285
3286     timer_start = av_gettime();
3287
3288     for (; received_sigterm == 0;) {
3289         int file_index, ist_index, past_recording_time = 1;
3290         AVPacket pkt;
3291         int64_t ipts_min;
3292         int64_t cur_time= av_gettime();
3293
3294         ipts_min = INT64_MAX;
3295         /* if 'q' pressed, exits */
3296         if (!using_stdin) {
3297             static int64_t last_time;
3298             if (received_nb_signals)
3299                 break;
3300             /* read_key() returns 0 on EOF */
3301             if(cur_time - last_time >= 100000 && !run_as_daemon){
3302                 key =  read_key();
3303                 last_time = cur_time;
3304             }else
3305                 key = -1;
3306             if (key == 'q')
3307                 break;
3308             if (key == '+') av_log_set_level(av_log_get_level()+10);
3309             if (key == '-') av_log_set_level(av_log_get_level()-10);
3310             if (key == 's') qp_hist     ^= 1;
3311             if (key == 'h'){
3312                 if (do_hex_dump){
3313                     do_hex_dump = do_pkt_dump = 0;
3314                 } else if(do_pkt_dump){
3315                     do_hex_dump = 1;
3316                 } else
3317                     do_pkt_dump = 1;
3318                 av_log_set_level(AV_LOG_DEBUG);
3319             }
3320             if (key == 'c' || key == 'C'){
3321                 char buf[4096], target[64], command[256], arg[256] = {0};
3322                 double time;
3323                 int k, n = 0;
3324                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3325                 i = 0;
3326                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3327                     if (k > 0)
3328                         buf[i++] = k;
3329                 buf[i] = 0;
3330                 if (k > 0 &&
3331                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3332                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3333                            target, time, command, arg);
3334                     for (i = 0; i < nb_filtergraphs; i++) {
3335                         FilterGraph *fg = filtergraphs[i];
3336                         if (fg->graph) {
3337                             if (time < 0) {
3338                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3339                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3340                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3341                             } else {
3342                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3343                             }
3344                         }
3345                     }
3346                 } else {
3347                     av_log(NULL, AV_LOG_ERROR,
3348                            "Parse error, at least 3 arguments were expected, "
3349                            "only %d given in string '%s'\n", n, buf);
3350                 }
3351             }
3352             if (key == 'd' || key == 'D'){
3353                 int debug=0;
3354                 if(key == 'D') {
3355                     debug = input_streams[0]->st->codec->debug<<1;
3356                     if(!debug) debug = 1;
3357                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3358                         debug += debug;
3359                 }else
3360                     if(scanf("%d", &debug)!=1)
3361                         fprintf(stderr,"error parsing debug value\n");
3362                 for(i=0;i<nb_input_streams;i++) {
3363                     input_streams[i]->st->codec->debug = debug;
3364                 }
3365                 for(i=0;i<nb_output_streams;i++) {
3366                     ost = output_streams[i];
3367                     ost->st->codec->debug = debug;
3368                 }
3369                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3370                 fprintf(stderr,"debug=%d\n", debug);
3371             }
3372             if (key == '?'){
3373                 fprintf(stderr, "key    function\n"
3374                                 "?      show this help\n"
3375                                 "+      increase verbosity\n"
3376                                 "-      decrease verbosity\n"
3377                                 "c      Send command to filtergraph\n"
3378                                 "D      cycle through available debug modes\n"
3379                                 "h      dump packets/hex press to cycle through the 3 states\n"
3380                                 "q      quit\n"
3381                                 "s      Show QP histogram\n"
3382                 );
3383             }
3384         }
3385
3386         /* check if there's any stream where output is still needed */
3387         for (i = 0; i < nb_output_streams; i++) {
3388             OutputFile *of;
3389             ost = output_streams[i];
3390             of  = output_files[ost->file_index];
3391             os  = output_files[ost->file_index]->ctx;
3392             if (ost->is_past_recording_time ||
3393                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3394                 continue;
3395             if (ost->frame_number >= ost->max_frames) {
3396                 int j;
3397                 for (j = 0; j < of->ctx->nb_streams; j++)
3398                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3399                 continue;
3400             }
3401             past_recording_time = 0;
3402         }
3403         if (past_recording_time)
3404             break;
3405
3406         /* select the stream that we must read now by looking at the
3407            smallest output pts */
3408         file_index = -1;
3409         for (i = 0; i < nb_input_streams; i++) {
3410             int64_t ipts;
3411             ist = input_streams[i];
3412             ipts = ist->pts;
3413             if (ist->discard || no_packet[ist->file_index])
3414                 continue;
3415             if (!input_files[ist->file_index]->eof_reached) {
3416                 if (ipts < ipts_min) {
3417                     ipts_min = ipts;
3418                     file_index = ist->file_index;
3419                 }
3420             }
3421         }
3422         /* if none, if is finished */
3423         if (file_index < 0) {
3424             if (no_packet_count) {
3425                 no_packet_count = 0;
3426                 memset(no_packet, 0, nb_input_files);
3427                 usleep(10000);
3428                 continue;
3429             }
3430             break;
3431         }
3432
3433         /* read a frame from it and output it in the fifo */
3434         is  = input_files[file_index]->ctx;
3435         ret = av_read_frame(is, &pkt);
3436         if (ret == AVERROR(EAGAIN)) {
3437             no_packet[file_index] = 1;
3438             no_packet_count++;
3439             continue;
3440         }
3441         if (ret < 0) {
3442             input_files[file_index]->eof_reached = 1;
3443
3444             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3445                 ist = input_streams[input_files[file_index]->ist_index + i];
3446                 if (ist->decoding_needed)
3447                     output_packet(ist, NULL);
3448             }
3449
3450             if (opt_shortest)
3451                 break;
3452             else
3453                 continue;
3454         }
3455
3456         no_packet_count = 0;
3457         memset(no_packet, 0, nb_input_files);
3458
3459         if (do_pkt_dump) {
3460             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3461                              is->streams[pkt.stream_index]);
3462         }
3463         /* the following test is needed in case new streams appear
3464            dynamically in stream : we ignore them */
3465         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3466             goto discard_packet;
3467         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3468         ist = input_streams[ist_index];
3469         if (ist->discard)
3470             goto discard_packet;
3471
3472         if (pkt.dts != AV_NOPTS_VALUE)
3473             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3474         if (pkt.pts != AV_NOPTS_VALUE)
3475             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3476
3477         if (pkt.pts != AV_NOPTS_VALUE)
3478             pkt.pts *= ist->ts_scale;
3479         if (pkt.dts != AV_NOPTS_VALUE)
3480             pkt.dts *= ist->ts_scale;
3481
3482         if (debug_ts) {
3483             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3484                     "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",
3485                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3486                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &ist->st->time_base),
3487                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3488                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3489                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3490                     input_files[ist->file_index]->ts_offset);
3491         }
3492
3493         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3494             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3495             int64_t delta   = pkt_dts - ist->next_dts;
3496             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3497             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3498                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3499                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3500                 pkt_dts+1<ist->pts){
3501                 input_files[ist->file_index]->ts_offset -= delta;
3502                 av_log(NULL, AV_LOG_DEBUG,
3503                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3504                        delta, input_files[ist->file_index]->ts_offset);
3505                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3506                 if (pkt.pts != AV_NOPTS_VALUE)
3507                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3508             }
3509             } else {
3510                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3511                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3512                      pkt_dts+1<ist->pts){
3513                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3514                     pkt.dts = AV_NOPTS_VALUE;
3515                 }
3516                 if (pkt.pts != AV_NOPTS_VALUE){
3517                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3518                     delta   = pkt_pts - ist->next_dts;
3519                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3520                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3521                         pkt_pts+1<ist->pts) {
3522                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3523                         pkt.pts = AV_NOPTS_VALUE;
3524                     }
3525                 }
3526             }
3527         }
3528
3529         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3530         if (output_packet(ist, &pkt) < 0 ||
3531             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
3532             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3533                    ist->file_index, ist->st->index);
3534             if (exit_on_error)
3535                 exit_program(1);
3536             av_free_packet(&pkt);
3537             continue;
3538         }
3539
3540     discard_packet:
3541         av_free_packet(&pkt);
3542
3543         /* dump report by using the output first video and audio streams */
3544         print_report(0, timer_start, cur_time);
3545     }
3546
3547     /* at the end of stream, we must flush the decoder buffers */
3548     for (i = 0; i < nb_input_streams; i++) {
3549         ist = input_streams[i];
3550         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3551             output_packet(ist, NULL);
3552         }
3553     }
3554     poll_filters();
3555     flush_encoders();
3556
3557     term_exit();
3558
3559     /* write the trailer if needed and close file */
3560     for (i = 0; i < nb_output_files; i++) {
3561         os = output_files[i]->ctx;
3562         av_write_trailer(os);
3563     }
3564
3565     /* dump report by using the first video and audio streams */
3566     print_report(1, timer_start, av_gettime());
3567
3568     /* close each encoder */
3569     for (i = 0; i < nb_output_streams; i++) {
3570         ost = output_streams[i];
3571         if (ost->encoding_needed) {
3572             av_freep(&ost->st->codec->stats_in);
3573             avcodec_close(ost->st->codec);
3574         }
3575     }
3576
3577     /* close each decoder */
3578     for (i = 0; i < nb_input_streams; i++) {
3579         ist = input_streams[i];
3580         if (ist->decoding_needed) {
3581             avcodec_close(ist->st->codec);
3582         }
3583     }
3584
3585     /* finished ! */
3586     ret = 0;
3587
3588  fail:
3589     av_freep(&no_packet);
3590
3591     if (output_streams) {
3592         for (i = 0; i < nb_output_streams; i++) {
3593             ost = output_streams[i];
3594             if (ost) {
3595                 if (ost->stream_copy)
3596                     av_freep(&ost->st->codec->extradata);
3597                 if (ost->logfile) {
3598                     fclose(ost->logfile);
3599                     ost->logfile = NULL;
3600                 }
3601                 av_freep(&ost->st->codec->subtitle_header);
3602                 av_free(ost->forced_kf_pts);
3603                 av_dict_free(&ost->opts);
3604             }
3605         }
3606     }
3607     return ret;
3608 }
3609
3610 static int opt_frame_crop(const char *opt, const char *arg)
3611 {
3612     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3613     return AVERROR(EINVAL);
3614 }
3615
3616 static int opt_pad(const char *opt, const char *arg)
3617 {
3618     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3619     return -1;
3620 }
3621
3622 static int opt_video_channel(const char *opt, const char *arg)
3623 {
3624     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3625     return opt_default("channel", arg);
3626 }
3627
3628 static int opt_video_standard(const char *opt, const char *arg)
3629 {
3630     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3631     return opt_default("standard", arg);
3632 }
3633
3634 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3635 {
3636     audio_codec_name = arg;
3637     return parse_option(o, "codec:a", arg, options);
3638 }
3639
3640 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3641 {
3642     video_codec_name = arg;
3643     return parse_option(o, "codec:v", arg, options);
3644 }