ffmpeg: misc cosmetics.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libswresample/swresample.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavutil/bprint.h"
54 #include "libavformat/os_support.h"
55
56 #include "libavformat/ffm.h" // not public API
57
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersrc.h"
62 # include "libavfilter/buffersink.h"
63
64 #if HAVE_SYS_RESOURCE_H
65 #include <sys/types.h>
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #elif HAVE_GETPROCESSTIMES
69 #include <windows.h>
70 #endif
71 #if HAVE_GETPROCESSMEMORYINFO
72 #include <windows.h>
73 #include <psapi.h>
74 #endif
75
76 #if HAVE_SYS_SELECT_H
77 #include <sys/select.h>
78 #endif
79
80 #if HAVE_TERMIOS_H
81 #include <fcntl.h>
82 #include <sys/ioctl.h>
83 #include <sys/time.h>
84 #include <termios.h>
85 #elif HAVE_KBHIT
86 #include <conio.h>
87 #endif
88 #include <time.h>
89
90 #include "cmdutils.h"
91
92 #include "libavutil/avassert.h"
93
94 #define VSYNC_AUTO       -1
95 #define VSYNC_PASSTHROUGH 0
96 #define VSYNC_CFR         1
97 #define VSYNC_VFR         2
98 #define VSYNC_DROP        0xff
99
100 #define SINKA
101
102 const char program_name[] = "ffmpeg";
103 const int program_birth_year = 2000;
104
105 /* select an input stream for an output stream */
106 typedef struct StreamMap {
107     int disabled;           /** 1 is this mapping is disabled by a negative map */
108     int file_index;
109     int stream_index;
110     int sync_file_index;
111     int sync_stream_index;
112     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
113 } StreamMap;
114
115 typedef struct {
116     int  file_idx,  stream_idx,  channel_idx; // input
117     int ofile_idx, ostream_idx;               // output
118 } AudioChannelMap;
119
120 static const OptionDef options[];
121
122 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
123
124 static int frame_bits_per_raw_sample = 0;
125 static int video_discard = 0;
126 static int same_quant = 0;
127 static int do_deinterlace = 0;
128 static int intra_dc_precision = 8;
129 static int qp_hist = 0;
130 static int intra_only = 0;
131 static const char *video_codec_name    = NULL;
132 static const char *audio_codec_name    = NULL;
133 static const char *subtitle_codec_name = NULL;
134
135 static int file_overwrite = 0;
136 static int no_file_overwrite = 0;
137 static int do_benchmark = 0;
138 static int do_benchmark_all = 0;
139 static int do_hex_dump = 0;
140 static int do_pkt_dump = 0;
141 static int do_psnr = 0;
142 static int do_pass = 0;
143 static const char *pass_logfilename_prefix;
144 static int video_sync_method = VSYNC_AUTO;
145 static int audio_sync_method = 0;
146 static float audio_drift_threshold = 0.1;
147 static int copy_ts = 0;
148 static int copy_tb = -1;
149 static int opt_shortest = 0;
150 static char *vstats_filename;
151 static FILE *vstats_file;
152
153 static int audio_volume = 256;
154
155 static int exit_on_error = 0;
156 static int using_stdin = 0;
157 static int run_as_daemon  = 0;
158 static volatile int received_nb_signals = 0;
159 static int64_t video_size = 0;
160 static int64_t audio_size = 0;
161 static int64_t extra_size = 0;
162 static int nb_frames_dup = 0;
163 static int nb_frames_drop = 0;
164 static int input_sync;
165
166 static float dts_delta_threshold = 10;
167 static float dts_error_threshold = 3600*30;
168
169 static int print_stats = 1;
170 static int debug_ts = 0;
171 static int current_time;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputFilter {
176     AVFilterContext    *filter;
177     struct InputStream *ist;
178     struct FilterGraph *graph;
179 } InputFilter;
180
181 typedef struct OutputFilter {
182     AVFilterContext     *filter;
183     struct OutputStream *ost;
184     struct FilterGraph  *graph;
185
186     /* temporary storage until stream maps are processed */
187     AVFilterInOut       *out_tmp;
188 } OutputFilter;
189
190 typedef struct FilterGraph {
191     int            index;
192     const char    *graph_desc;
193
194     AVFilterGraph *graph;
195
196     InputFilter   **inputs;
197     int          nb_inputs;
198     OutputFilter **outputs;
199     int         nb_outputs;
200 } FilterGraph;
201
202 typedef struct FrameBuffer {
203     uint8_t *base[4];
204     uint8_t *data[4];
205     int  linesize[4];
206
207     int h, w;
208     enum PixelFormat pix_fmt;
209
210     int refcount;
211     struct InputStream *ist;
212     struct FrameBuffer *next;
213 } FrameBuffer;
214
215 typedef struct InputStream {
216     int file_index;
217     AVStream *st;
218     int discard;             /* true if stream data should be discarded */
219     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
220     AVCodec *dec;
221     AVFrame *decoded_frame;
222
223     int64_t       start;     /* time when read started */
224     /* predicted dts of the next packet read for this stream or (when there are
225      * several frames in a packet) of the next frame in current packet */
226     int64_t       next_dts;
227     /* dts of the last packet read for this stream */
228     int64_t       dts;
229
230     int64_t       next_pts;  /* synthetic pts for the next decode frame */
231     int64_t       pts;       /* current pts of the decoded frame */
232     double ts_scale;
233     int is_start;            /* is 1 at the start and after a discontinuity */
234     int saw_first_ts;
235     int showed_multi_packet_warning;
236     AVDictionary *opts;
237
238     int resample_height;
239     int resample_width;
240     int resample_pix_fmt;
241
242     int      resample_sample_fmt;
243     int      resample_sample_rate;
244     int      resample_channels;
245     uint64_t resample_channel_layout;
246
247     /* a pool of free buffers for decoded data */
248     FrameBuffer *buffer_pool;
249     int dr1;
250
251     /* decoded data from this stream goes into all those filters
252      * currently video only */
253     InputFilter **filters;
254     int        nb_filters;
255 } InputStream;
256
257 typedef struct InputFile {
258     AVFormatContext *ctx;
259     int eof_reached;      /* true if eof reached */
260     int ist_index;        /* index of first stream in input_streams */
261     int buffer_size;      /* current total buffer size */
262     int64_t ts_offset;
263     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
264                              from ctx.nb_streams if new streams appear during av_read_frame() */
265     int rate_emu;
266 } InputFile;
267
268 typedef struct OutputStream {
269     int file_index;          /* file index */
270     int index;               /* stream index in the output file */
271     int source_index;        /* InputStream index */
272     AVStream *st;            /* stream in the output file */
273     int encoding_needed;     /* true if encoding needed for this stream */
274     int frame_number;
275     /* input pts and corresponding output pts
276        for A/V sync */
277     struct InputStream *sync_ist; /* input stream to sync against */
278     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
279     AVBitStreamFilterContext *bitstream_filters;
280     AVCodec *enc;
281     int64_t max_frames;
282     AVFrame *filtered_frame;
283
284     /* video only */
285     AVRational frame_rate;
286     int force_fps;
287     int top_field_first;
288
289     float frame_aspect_ratio;
290     float last_quality;
291
292     /* forced key frames */
293     int64_t *forced_kf_pts;
294     int forced_kf_count;
295     int forced_kf_index;
296
297     /* audio only */
298     int audio_channels_map[SWR_CH_MAX];  /* list of the channels id to pick from the source stream */
299     int audio_channels_mapped;           /* number of channels in audio_channels_map */
300
301     FILE *logfile;
302
303     OutputFilter *filter;
304     char *avfilter;
305
306     int64_t sws_flags;
307     int64_t swr_dither_method;
308     double swr_dither_scale;
309     AVDictionary *opts;
310     int is_past_recording_time;
311     int stream_copy;
312     const char *attachment_filename;
313     int copy_initial_nonkeyframes;
314
315     int keep_pix_fmt;
316 } OutputStream;
317
318
319 #if HAVE_TERMIOS_H
320
321 /* init terminal so that we can grab keys */
322 static struct termios oldtty;
323 static int restore_tty;
324 #endif
325
326 typedef struct OutputFile {
327     AVFormatContext *ctx;
328     AVDictionary *opts;
329     int ost_index;       /* index of the first stream in output_streams */
330     int64_t recording_time; /* desired length of the resulting file in microseconds */
331     int64_t start_time;     /* start time in microseconds */
332     uint64_t limit_filesize; /* filesize limit expressed in bytes */
333 } OutputFile;
334
335 static InputStream **input_streams = NULL;
336 static int        nb_input_streams = 0;
337 static InputFile   **input_files   = NULL;
338 static int        nb_input_files   = 0;
339
340 static OutputStream **output_streams = NULL;
341 static int         nb_output_streams = 0;
342 static OutputFile   **output_files   = NULL;
343 static int         nb_output_files   = 0;
344
345 static FilterGraph **filtergraphs;
346 int               nb_filtergraphs;
347
348 typedef struct OptionsContext {
349     /* input/output options */
350     int64_t start_time;
351     const char *format;
352
353     SpecifierOpt *codec_names;
354     int        nb_codec_names;
355     SpecifierOpt *audio_channels;
356     int        nb_audio_channels;
357     SpecifierOpt *audio_sample_rate;
358     int        nb_audio_sample_rate;
359     SpecifierOpt *frame_rates;
360     int        nb_frame_rates;
361     SpecifierOpt *frame_sizes;
362     int        nb_frame_sizes;
363     SpecifierOpt *frame_pix_fmts;
364     int        nb_frame_pix_fmts;
365
366     /* input options */
367     int64_t input_ts_offset;
368     int rate_emu;
369
370     SpecifierOpt *ts_scale;
371     int        nb_ts_scale;
372     SpecifierOpt *dump_attachment;
373     int        nb_dump_attachment;
374
375     /* output options */
376     StreamMap *stream_maps;
377     int     nb_stream_maps;
378     AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
379     int           nb_audio_channel_maps; /* number of (valid) -map_channel settings */
380     int metadata_global_manual;
381     int metadata_streams_manual;
382     int metadata_chapters_manual;
383     const char **attachments;
384     int       nb_attachments;
385
386     int chapters_input_file;
387
388     int64_t recording_time;
389     uint64_t limit_filesize;
390     float mux_preload;
391     float mux_max_delay;
392
393     int video_disable;
394     int audio_disable;
395     int subtitle_disable;
396     int data_disable;
397
398     /* indexed by output file stream index */
399     int   *streamid_map;
400     int nb_streamid_map;
401
402     SpecifierOpt *metadata;
403     int        nb_metadata;
404     SpecifierOpt *max_frames;
405     int        nb_max_frames;
406     SpecifierOpt *bitstream_filters;
407     int        nb_bitstream_filters;
408     SpecifierOpt *codec_tags;
409     int        nb_codec_tags;
410     SpecifierOpt *sample_fmts;
411     int        nb_sample_fmts;
412     SpecifierOpt *qscale;
413     int        nb_qscale;
414     SpecifierOpt *forced_key_frames;
415     int        nb_forced_key_frames;
416     SpecifierOpt *force_fps;
417     int        nb_force_fps;
418     SpecifierOpt *frame_aspect_ratios;
419     int        nb_frame_aspect_ratios;
420     SpecifierOpt *rc_overrides;
421     int        nb_rc_overrides;
422     SpecifierOpt *intra_matrices;
423     int        nb_intra_matrices;
424     SpecifierOpt *inter_matrices;
425     int        nb_inter_matrices;
426     SpecifierOpt *top_field_first;
427     int        nb_top_field_first;
428     SpecifierOpt *metadata_map;
429     int        nb_metadata_map;
430     SpecifierOpt *presets;
431     int        nb_presets;
432     SpecifierOpt *copy_initial_nonkeyframes;
433     int        nb_copy_initial_nonkeyframes;
434     SpecifierOpt *filters;
435     int        nb_filters;
436 } OptionsContext;
437
438 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
439 {\
440     int i, ret;\
441     for (i = 0; i < o->nb_ ## name; i++) {\
442         char *spec = o->name[i].specifier;\
443         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
444             outvar = o->name[i].u.type;\
445         else if (ret < 0)\
446             exit_program(1);\
447     }\
448 }
449
450 static int64_t getutime(void)
451 {
452 #if HAVE_GETRUSAGE
453     struct rusage rusage;
454
455     getrusage(RUSAGE_SELF, &rusage);
456     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
457 #elif HAVE_GETPROCESSTIMES
458     HANDLE proc;
459     FILETIME c, e, k, u;
460     proc = GetCurrentProcess();
461     GetProcessTimes(proc, &c, &e, &k, &u);
462     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
463 #else
464     return av_gettime();
465 #endif
466 }
467
468 static void update_benchmark(const char *fmt, ...)
469 {
470     if (do_benchmark_all) {
471         int64_t t = getutime();
472         va_list va;
473         char buf[1024];
474
475         if (fmt) {
476             va_start(va, fmt);
477             vsnprintf(buf, sizeof(buf), fmt, va);
478             va_end(va);
479             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
480         }
481         current_time = t;
482     }
483 }
484
485 static void reset_options(OptionsContext *o, int is_input)
486 {
487     const OptionDef *po = options;
488     OptionsContext bak= *o;
489     int i;
490
491     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
492     while (po->name) {
493         void *dst = (uint8_t*)o + po->u.off;
494
495         if (po->flags & OPT_SPEC) {
496             SpecifierOpt **so = dst;
497             int i, *count = (int*)(so + 1);
498             for (i = 0; i < *count; i++) {
499                 av_freep(&(*so)[i].specifier);
500                 if (po->flags & OPT_STRING)
501                     av_freep(&(*so)[i].u.str);
502             }
503             av_freep(so);
504             *count = 0;
505         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
506             av_freep(dst);
507         po++;
508     }
509
510     for (i = 0; i < o->nb_stream_maps; i++)
511         av_freep(&o->stream_maps[i].linklabel);
512     av_freep(&o->stream_maps);
513     av_freep(&o->audio_channel_maps);
514     av_freep(&o->streamid_map);
515
516     memset(o, 0, sizeof(*o));
517
518     if(is_input) o->recording_time = bak.recording_time;
519     else         o->recording_time = INT64_MAX;
520     o->mux_max_delay  = 0.7;
521     o->limit_filesize = UINT64_MAX;
522     o->chapters_input_file = INT_MAX;
523
524     uninit_opts();
525     init_opts();
526 }
527
528 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
529 {
530     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
531     int i, ret;
532     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
533     int h_chroma_shift, v_chroma_shift;
534     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
535     int w = s->width, h = s->height;
536
537     if (!buf)
538         return AVERROR(ENOMEM);
539
540     avcodec_align_dimensions(s, &w, &h);
541
542     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
543         w += 2*edge;
544         h += 2*edge;
545     }
546
547     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
548                               s->pix_fmt, 32)) < 0) {
549         av_freep(&buf);
550         return ret;
551     }
552     /* XXX this shouldn't be needed, but some tests break without this line
553      * those decoders are buggy and need to be fixed.
554      * the following tests fail:
555      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
556      */
557     memset(buf->base[0], 128, ret);
558
559     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
560     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
561         const int h_shift = i==0 ? 0 : h_chroma_shift;
562         const int v_shift = i==0 ? 0 : v_chroma_shift;
563         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1] || !buf->base[i])
564             buf->data[i] = buf->base[i];
565         else
566             buf->data[i] = buf->base[i] +
567                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
568                                    (pixel_size*edge >> h_shift), 32);
569     }
570     buf->w       = s->width;
571     buf->h       = s->height;
572     buf->pix_fmt = s->pix_fmt;
573     buf->ist     = ist;
574
575     *pbuf = buf;
576     return 0;
577 }
578
579 static void free_buffer_pool(InputStream *ist)
580 {
581     FrameBuffer *buf = ist->buffer_pool;
582     while (buf) {
583         ist->buffer_pool = buf->next;
584         av_freep(&buf->base[0]);
585         av_free(buf);
586         buf = ist->buffer_pool;
587     }
588 }
589
590 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
591 {
592     av_assert0(buf->refcount > 0);
593     buf->refcount--;
594     if (!buf->refcount) {
595         FrameBuffer *tmp;
596         for(tmp= ist->buffer_pool; tmp; tmp= tmp->next)
597             av_assert1(tmp != buf);
598         buf->next = ist->buffer_pool;
599         ist->buffer_pool = buf;
600     }
601 }
602
603 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
604 {
605     InputStream *ist = s->opaque;
606     FrameBuffer *buf;
607     int ret, i;
608
609     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
610         return -1;
611
612     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
613         return ret;
614
615     buf              = ist->buffer_pool;
616     ist->buffer_pool = buf->next;
617     buf->next        = NULL;
618     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
619         av_freep(&buf->base[0]);
620         av_free(buf);
621         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
622             return ret;
623     }
624     av_assert0(!buf->refcount);
625     buf->refcount++;
626
627     frame->opaque        = buf;
628     frame->type          = FF_BUFFER_TYPE_USER;
629     frame->extended_data = frame->data;
630     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
631     frame->width         = buf->w;
632     frame->height        = buf->h;
633     frame->format        = buf->pix_fmt;
634     frame->sample_aspect_ratio = s->sample_aspect_ratio;
635
636     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
637         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
638         frame->data[i]     = buf->data[i];
639         frame->linesize[i] = buf->linesize[i];
640     }
641
642     return 0;
643 }
644
645 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
646 {
647     InputStream *ist = s->opaque;
648     FrameBuffer *buf = frame->opaque;
649     int i;
650
651     if(frame->type!=FF_BUFFER_TYPE_USER)
652         return avcodec_default_release_buffer(s, frame);
653
654     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
655         frame->data[i] = NULL;
656
657     unref_buffer(ist, buf);
658 }
659
660 static void filter_release_buffer(AVFilterBuffer *fb)
661 {
662     FrameBuffer *buf = fb->priv;
663     av_free(fb);
664     unref_buffer(buf->ist, buf);
665 }
666
667 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
668 {
669     if (codec && codec->pix_fmts) {
670         const enum PixelFormat *p = codec->pix_fmts;
671         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
672         enum PixelFormat best= PIX_FMT_NONE;
673         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
674             if (st->codec->codec_id == CODEC_ID_MJPEG) {
675                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
676             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
677                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
678                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
679             }
680         }
681         for (; *p != PIX_FMT_NONE; p++) {
682             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
683             if (*p == target)
684                 break;
685         }
686         if (*p == PIX_FMT_NONE) {
687             if (target != PIX_FMT_NONE)
688                 av_log(NULL, AV_LOG_WARNING,
689                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
690                        av_pix_fmt_descriptors[target].name,
691                        codec->name,
692                        av_pix_fmt_descriptors[best].name);
693             return best;
694         }
695     }
696     return target;
697 }
698
699 static char *choose_pix_fmts(OutputStream *ost)
700 {
701      if (ost->keep_pix_fmt) {
702         if (ost->filter)
703             avfilter_graph_set_auto_convert(ost->filter->graph->graph,
704                                             AVFILTER_AUTO_CONVERT_NONE);
705         if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
706             return NULL;
707         return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
708     }
709     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
710         return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
711     } else if (ost->enc->pix_fmts) {
712         const enum PixelFormat *p;
713         AVIOContext *s = NULL;
714         uint8_t *ret;
715         int len;
716
717         if (avio_open_dyn_buf(&s) < 0)
718             exit_program(1);
719
720         p = ost->enc->pix_fmts;
721         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
722             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
723                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
724             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
725                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
726                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
727             }
728         }
729
730         for (; *p != PIX_FMT_NONE; p++) {
731             const char *name = av_get_pix_fmt_name(*p);
732             avio_printf(s, "%s:", name);
733         }
734         len = avio_close_dyn_buf(s, &ret);
735         ret[len - 1] = 0;
736         return ret;
737     } else
738         return NULL;
739 }
740
741 /**
742  * Define a function for building a string containing a list of
743  * allowed formats,
744  */
745 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator) \
746 static char *choose_ ## var ## s(OutputStream *ost)                             \
747 {                                                                               \
748     if (ost->st->codec->var != none) {                                          \
749         get_name(ost->st->codec->var);                                          \
750         return av_strdup(name);                                                 \
751     } else if (ost->enc->supported_list) {                                      \
752         const type *p;                                                          \
753         AVIOContext *s = NULL;                                                  \
754         uint8_t *ret;                                                           \
755         int len;                                                                \
756                                                                                 \
757         if (avio_open_dyn_buf(&s) < 0)                                          \
758             exit_program(1);                                                    \
759                                                                                 \
760         for (p = ost->enc->supported_list; *p != none; p++) {                   \
761             get_name(*p);                                                       \
762             avio_printf(s, "%s" separator, name);                               \
763         }                                                                       \
764         len = avio_close_dyn_buf(s, &ret);                                      \
765         ret[len - 1] = 0;                                                       \
766         return ret;                                                             \
767     } else                                                                      \
768         return NULL;                                                            \
769 }
770
771 #define GET_PIX_FMT_NAME(pix_fmt)\
772     const char *name = av_get_pix_fmt_name(pix_fmt);
773
774 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
775 //                   GET_PIX_FMT_NAME, ":")
776
777 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
778     const char *name = av_get_sample_fmt_name(sample_fmt)
779
780 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
781                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
782
783 #define GET_SAMPLE_RATE_NAME(rate)\
784     char name[16];\
785     snprintf(name, sizeof(name), "%d", rate);
786
787 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
788                   GET_SAMPLE_RATE_NAME, ",")
789
790 #define GET_CH_LAYOUT_NAME(ch_layout)\
791     char name[16];\
792     snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
793
794 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
795                   GET_CH_LAYOUT_NAME, ",")
796
797 static int configure_audio_filters(FilterGraph *fg, AVFilterContext **in_filter,
798                                    AVFilterContext **out_filter)
799 {
800     InputStream  *ist = fg->inputs[0]->ist;
801     OutputStream *ost = fg->outputs[0]->ost;
802     AVCodecContext *codec  = ost->st->codec;
803     AVCodecContext *icodec = ist->st->codec;
804     char *sample_fmts, *sample_rates, *channel_layouts;
805     char args[256];
806     int ret;
807
808     avfilter_graph_free(&fg->graph);
809     if (!(fg->graph = avfilter_graph_alloc()))
810         return AVERROR(ENOMEM);
811
812     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s:"
813              "channel_layout=0x%"PRIx64, ist->st->time_base.num,
814              ist->st->time_base.den, icodec->sample_rate,
815              av_get_sample_fmt_name(icodec->sample_fmt), icodec->channel_layout);
816     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
817                                        avfilter_get_by_name("abuffer"),
818                                        "src", args, NULL, fg->graph);
819     if (ret < 0)
820         return ret;
821
822     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
823                                        avfilter_get_by_name("abuffersink_old"),
824                                        "out", NULL, NULL, fg->graph);
825     if (ret < 0)
826         return ret;
827
828     *in_filter  = fg->inputs[0]->filter;
829     *out_filter = fg->outputs[0]->filter;
830
831     if (codec->channels && !codec->channel_layout)
832         codec->channel_layout = av_get_default_channel_layout(codec->channels);
833
834     sample_fmts     = choose_sample_fmts(ost);
835     sample_rates    = choose_sample_rates(ost);
836     channel_layouts = choose_channel_layouts(ost);
837     if (sample_fmts || sample_rates || channel_layouts) {
838         AVFilterContext *format;
839         char args[256];
840         int len = 0;
841
842         if (sample_fmts)
843             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
844                             sample_fmts);
845         if (sample_rates)
846             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
847                             sample_rates);
848         if (channel_layouts)
849             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
850                             channel_layouts);
851         args[len - 1] = 0;
852
853         av_freep(&sample_fmts);
854         av_freep(&sample_rates);
855         av_freep(&channel_layouts);
856
857         ret = avfilter_graph_create_filter(&format,
858                                            avfilter_get_by_name("aformat"),
859                                            "aformat", args, NULL, fg->graph);
860         if (ret < 0)
861             return ret;
862
863         ret = avfilter_link(format, 0, fg->outputs[0]->filter, 0);
864         if (ret < 0)
865             return ret;
866
867         *out_filter = format;
868     }
869
870 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do {                 \
871     AVFilterContext *filt_ctx;                                              \
872                                                                             \
873     av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi "            \
874            "similarly to -af " filter_name "=%s.\n", arg);                  \
875                                                                             \
876     ret = avfilter_graph_create_filter(&filt_ctx,                           \
877                                        avfilter_get_by_name(filter_name),   \
878                                        filter_name, arg, NULL, fg->graph);  \
879     if (ret < 0)                                                            \
880         return ret;                                                         \
881                                                                             \
882     ret = avfilter_link(*in_filter, 0, filt_ctx, 0);                        \
883     if (ret < 0)                                                            \
884         return ret;                                                         \
885                                                                             \
886     *in_filter = filt_ctx;                                                  \
887 } while (0)
888
889     if (ost->audio_channels_mapped) {
890         int i;
891         AVBPrint pan_buf;
892
893         av_bprint_init(&pan_buf, 256, 8192);
894         av_bprintf(&pan_buf, "0x%"PRIx64,
895                    av_get_default_channel_layout(ost->audio_channels_mapped));
896         for (i = 0; i < ost->audio_channels_mapped; i++)
897             if (ost->audio_channels_map[i] != -1)
898                 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
899
900         AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
901         av_bprint_finalize(&pan_buf, NULL);
902     }
903
904     if (audio_volume != 256) {
905         char args[256];
906
907         snprintf(args, sizeof(args), "%lf", audio_volume / 256.);
908         AUTO_INSERT_FILTER("-vol", "volume", args);
909     }
910
911     return 0;
912 }
913
914 static int configure_video_filters(FilterGraph *fg, AVFilterContext **in_filter,
915                                    AVFilterContext **out_filter)
916 {
917     InputStream  *ist = fg->inputs[0]->ist;
918     OutputStream *ost = fg->outputs[0]->ost;
919     AVFilterContext *filter;
920     AVCodecContext *codec = ost->st->codec;
921     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
922     char *pix_fmts;
923     AVRational sample_aspect_ratio;
924     char args[255];
925     int ret;
926
927     if (ist->st->sample_aspect_ratio.num) {
928         sample_aspect_ratio = ist->st->sample_aspect_ratio;
929     } else
930         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
931
932     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
933              ist->st->codec->height, ist->st->codec->pix_fmt,
934              1, AV_TIME_BASE,
935              sample_aspect_ratio.num, sample_aspect_ratio.den,
936              SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
937
938     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
939                                        avfilter_get_by_name("buffer"),
940                                        "src", args, NULL, fg->graph);
941     if (ret < 0)
942         return ret;
943
944 #if FF_API_OLD_VSINK_API
945     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
946                                        avfilter_get_by_name("buffersink"),
947                                        "out", NULL, NULL, fg->graph);
948 #else
949     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter,
950                                        avfilter_get_by_name("buffersink"),
951                                        "out", NULL, buffersink_params, fg->graph);
952 #endif
953     av_freep(&buffersink_params);
954
955     if (ret < 0)
956         return ret;
957     *in_filter  = fg->inputs[0]->filter;
958     *out_filter = fg->outputs[0]->filter;
959
960     if (codec->width || codec->height) {
961         snprintf(args, 255, "%d:%d:flags=0x%X",
962                  codec->width,
963                  codec->height,
964                  (unsigned)ost->sws_flags);
965         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
966                                                 NULL, args, NULL, fg->graph)) < 0)
967             return ret;
968         if ((ret = avfilter_link(*in_filter, 0, filter, 0)) < 0)
969             return ret;
970         *in_filter = filter;
971     }
972
973     if ((pix_fmts = choose_pix_fmts(ost))) {
974         if ((ret = avfilter_graph_create_filter(&filter,
975                                                 avfilter_get_by_name("format"),
976                                                 "format", pix_fmts, NULL,
977                                                 fg->graph)) < 0)
978             return ret;
979         if ((ret = avfilter_link(filter, 0, *out_filter, 0)) < 0)
980             return ret;
981
982         *out_filter = filter;
983         av_freep(&pix_fmts);
984     }
985
986     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
987     fg->graph->scale_sws_opts = av_strdup(args);
988
989     return 0;
990 }
991
992 static int configure_simple_filtergraph(FilterGraph *fg)
993 {
994     OutputStream *ost = fg->outputs[0]->ost;
995     AVFilterContext *in_filter, *out_filter;
996     int ret;
997
998     avfilter_graph_free(&fg->graph);
999     fg->graph = avfilter_graph_alloc();
1000     if (!fg->graph)
1001         return AVERROR(ENOMEM);
1002
1003     switch (ost->st->codec->codec_type) {
1004     case AVMEDIA_TYPE_VIDEO:
1005         ret = configure_video_filters(fg, &in_filter, &out_filter);
1006         break;
1007     case AVMEDIA_TYPE_AUDIO:
1008         ret = configure_audio_filters(fg, &in_filter, &out_filter);
1009         break;
1010     default: av_assert0(0);
1011     }
1012     if (ret < 0)
1013         return ret;
1014
1015     if (ost->avfilter) {
1016         AVFilterInOut *outputs = avfilter_inout_alloc();
1017         AVFilterInOut *inputs  = avfilter_inout_alloc();
1018
1019         outputs->name    = av_strdup("in");
1020         outputs->filter_ctx = in_filter;
1021         outputs->pad_idx = 0;
1022         outputs->next    = NULL;
1023
1024         inputs->name    = av_strdup("out");
1025         inputs->filter_ctx = out_filter;
1026         inputs->pad_idx = 0;
1027         inputs->next    = NULL;
1028
1029         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
1030             return ret;
1031         av_freep(&ost->avfilter);
1032     } else {
1033         if ((ret = avfilter_link(in_filter, 0, out_filter, 0)) < 0)
1034             return ret;
1035     }
1036
1037     if (ost->keep_pix_fmt)
1038         avfilter_graph_set_auto_convert(fg->graph,
1039                                         AVFILTER_AUTO_CONVERT_NONE);
1040
1041     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1042         return ret;
1043
1044     ost->filter = fg->outputs[0];
1045
1046     return 0;
1047 }
1048
1049 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
1050 {
1051     FilterGraph *fg = av_mallocz(sizeof(*fg));
1052
1053     if (!fg)
1054         exit_program(1);
1055     fg->index = nb_filtergraphs;
1056
1057     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
1058                              fg->nb_outputs + 1);
1059     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
1060         exit_program(1);
1061     fg->outputs[0]->ost   = ost;
1062     fg->outputs[0]->graph = fg;
1063
1064     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
1065                             fg->nb_inputs + 1);
1066     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
1067         exit_program(1);
1068     fg->inputs[0]->ist   = ist;
1069     fg->inputs[0]->graph = fg;
1070
1071     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1072                               &ist->nb_filters, ist->nb_filters + 1);
1073     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
1074
1075     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
1076                               &nb_filtergraphs, nb_filtergraphs + 1);
1077     filtergraphs[nb_filtergraphs - 1] = fg;
1078
1079     return fg;
1080 }
1081
1082 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
1083 {
1084     InputStream *ist = NULL;
1085     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
1086     int i;
1087
1088     // TODO: support other filter types
1089     if (type != AVMEDIA_TYPE_VIDEO) {
1090         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
1091         exit_program(1);
1092     }
1093
1094     if (in->name) {
1095         AVFormatContext *s;
1096         AVStream       *st = NULL;
1097         char *p;
1098         int file_idx = strtol(in->name, &p, 0);
1099
1100         if (file_idx < 0 || file_idx >= nb_input_files) {
1101             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
1102                    file_idx, fg->graph_desc);
1103             exit_program(1);
1104         }
1105         s = input_files[file_idx]->ctx;
1106
1107         for (i = 0; i < s->nb_streams; i++) {
1108             if (s->streams[i]->codec->codec_type != type)
1109                 continue;
1110             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
1111                 st = s->streams[i];
1112                 break;
1113             }
1114         }
1115         if (!st) {
1116             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
1117                    "matches no streams.\n", p, fg->graph_desc);
1118             exit_program(1);
1119         }
1120         ist = input_streams[input_files[file_idx]->ist_index + st->index];
1121     } else {
1122         /* find the first unused stream of corresponding type */
1123         for (i = 0; i < nb_input_streams; i++) {
1124             ist = input_streams[i];
1125             if (ist->st->codec->codec_type == type && ist->discard)
1126                 break;
1127         }
1128         if (i == nb_input_streams) {
1129             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
1130                    "unlabeled input pad %d on filter %s", in->pad_idx,
1131                    in->filter_ctx->name);
1132             exit_program(1);
1133         }
1134     }
1135     ist->discard         = 0;
1136     ist->decoding_needed = 1;
1137     ist->st->discard = AVDISCARD_NONE;
1138
1139     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
1140                             &fg->nb_inputs, fg->nb_inputs + 1);
1141     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
1142         exit_program(1);
1143     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
1144     fg->inputs[fg->nb_inputs - 1]->graph = fg;
1145
1146     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
1147                               &ist->nb_filters, ist->nb_filters + 1);
1148     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
1149 }
1150
1151 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
1152 {
1153     char *pix_fmts;
1154     AVCodecContext *codec = ofilter->ost->st->codec;
1155     AVFilterContext *last_filter = out->filter_ctx;
1156     int pad_idx = out->pad_idx;
1157     int ret;
1158     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1159
1160 #if FF_API_OLD_VSINK_API
1161     ret = avfilter_graph_create_filter(&ofilter->filter,
1162                                        avfilter_get_by_name("buffersink"),
1163                                        "out", NULL, NULL, fg->graph);
1164 #else
1165     ret = avfilter_graph_create_filter(&ofilter->filter,
1166                                        avfilter_get_by_name("buffersink"),
1167                                        "out", NULL, buffersink_params, fg->graph);
1168 #endif
1169     av_freep(&buffersink_params);
1170
1171     if (ret < 0)
1172         return ret;
1173
1174     if (codec->width || codec->height) {
1175         char args[255];
1176         AVFilterContext *filter;
1177
1178         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
1179                  codec->width,
1180                  codec->height,
1181                  (unsigned)ofilter->ost->sws_flags);
1182         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
1183                                                 NULL, args, NULL, fg->graph)) < 0)
1184             return ret;
1185         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1186             return ret;
1187
1188         last_filter = filter;
1189         pad_idx = 0;
1190     }
1191
1192     if ((pix_fmts = choose_pix_fmts(ofilter->ost))) {
1193         AVFilterContext *filter;
1194         if ((ret = avfilter_graph_create_filter(&filter,
1195                                                 avfilter_get_by_name("format"),
1196                                                 "format", pix_fmts, NULL,
1197                                                 fg->graph)) < 0)
1198             return ret;
1199         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
1200             return ret;
1201
1202         last_filter = filter;
1203         pad_idx     = 0;
1204         av_freep(&pix_fmts);
1205     }
1206
1207     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
1208         return ret;
1209
1210     return 0;
1211 }
1212
1213 static int configure_complex_filter(FilterGraph *fg)
1214 {
1215     AVFilterInOut *inputs, *outputs, *cur;
1216     int ret, i, init = !fg->graph;
1217
1218     avfilter_graph_free(&fg->graph);
1219     if (!(fg->graph = avfilter_graph_alloc()))
1220         return AVERROR(ENOMEM);
1221
1222     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
1223         return ret;
1224
1225     for (cur = inputs; init && cur; cur = cur->next)
1226         init_input_filter(fg, cur);
1227
1228     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
1229         InputFilter *ifilter = fg->inputs[i];
1230         InputStream     *ist = ifilter->ist;
1231         AVRational       sar;
1232         char            args[255];
1233
1234         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1235                                                  ist->st->codec->sample_aspect_ratio;
1236         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
1237                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
1238                  sar.num, sar.den);
1239
1240         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
1241                                                 avfilter_get_by_name("buffer"), cur->name,
1242                                                 args, NULL, fg->graph)) < 0)
1243             return ret;
1244         if ((ret = avfilter_link(ifilter->filter, 0,
1245                                  cur->filter_ctx, cur->pad_idx)) < 0)
1246             return ret;
1247     }
1248     avfilter_inout_free(&inputs);
1249
1250     if (!init) {
1251         /* we already know the mappings between lavfi outputs and output streams,
1252          * so we can finish the setup */
1253         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1254             configure_output_filter(fg, fg->outputs[i], cur);
1255         avfilter_inout_free(&outputs);
1256
1257         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1258             return ret;
1259     } else {
1260         /* wait until output mappings are processed */
1261         for (cur = outputs; cur;) {
1262             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1263                                      &fg->nb_outputs, fg->nb_outputs + 1);
1264             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1265                 exit_program(1);
1266             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1267             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1268             cur = cur->next;
1269             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1270         }
1271     }
1272
1273     return 0;
1274 }
1275
1276 static int configure_complex_filters(void)
1277 {
1278     int i, ret = 0;
1279
1280     for (i = 0; i < nb_filtergraphs; i++)
1281         if (!filtergraphs[i]->graph &&
1282             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1283             return ret;
1284     return 0;
1285 }
1286
1287 static int configure_filtergraph(FilterGraph *fg)
1288 {
1289     return fg->graph_desc ? configure_complex_filter(fg) :
1290                             configure_simple_filtergraph(fg);
1291 }
1292
1293 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1294 {
1295     int i;
1296     for (i = 0; i < fg->nb_inputs; i++)
1297         if (fg->inputs[i]->ist == ist)
1298             return 1;
1299     return 0;
1300 }
1301
1302 static void term_exit(void)
1303 {
1304     av_log(NULL, AV_LOG_QUIET, "%s", "");
1305 #if HAVE_TERMIOS_H
1306     if(restore_tty)
1307         tcsetattr (0, TCSANOW, &oldtty);
1308 #endif
1309 }
1310
1311 static volatile int received_sigterm = 0;
1312
1313 static void sigterm_handler(int sig)
1314 {
1315     received_sigterm = sig;
1316     received_nb_signals++;
1317     term_exit();
1318     if(received_nb_signals > 3)
1319         exit(123);
1320 }
1321
1322 static void term_init(void)
1323 {
1324 #if HAVE_TERMIOS_H
1325     if(!run_as_daemon){
1326         struct termios tty;
1327
1328         if (tcgetattr (0, &tty) == 0) {
1329             oldtty = tty;
1330             restore_tty = 1;
1331             atexit(term_exit);
1332
1333             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1334                              |INLCR|IGNCR|ICRNL|IXON);
1335             tty.c_oflag |= OPOST;
1336             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1337             tty.c_cflag &= ~(CSIZE|PARENB);
1338             tty.c_cflag |= CS8;
1339             tty.c_cc[VMIN] = 1;
1340             tty.c_cc[VTIME] = 0;
1341
1342             tcsetattr (0, TCSANOW, &tty);
1343         }
1344         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1345     }
1346 #endif
1347     avformat_network_deinit();
1348
1349     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1350     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1351 #ifdef SIGXCPU
1352     signal(SIGXCPU, sigterm_handler);
1353 #endif
1354 }
1355
1356 /* read a key without blocking */
1357 static int read_key(void)
1358 {
1359     unsigned char ch;
1360 #if HAVE_TERMIOS_H
1361     int n = 1;
1362     struct timeval tv;
1363     fd_set rfds;
1364
1365     FD_ZERO(&rfds);
1366     FD_SET(0, &rfds);
1367     tv.tv_sec = 0;
1368     tv.tv_usec = 0;
1369     n = select(1, &rfds, NULL, NULL, &tv);
1370     if (n > 0) {
1371         n = read(0, &ch, 1);
1372         if (n == 1)
1373             return ch;
1374
1375         return n;
1376     }
1377 #elif HAVE_KBHIT
1378 #    if HAVE_PEEKNAMEDPIPE
1379     static int is_pipe;
1380     static HANDLE input_handle;
1381     DWORD dw, nchars;
1382     if(!input_handle){
1383         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1384         is_pipe = !GetConsoleMode(input_handle, &dw);
1385     }
1386
1387     if (stdin->_cnt > 0) {
1388         read(0, &ch, 1);
1389         return ch;
1390     }
1391     if (is_pipe) {
1392         /* When running under a GUI, you will end here. */
1393         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1394             return -1;
1395         //Read it
1396         if(nchars != 0) {
1397             read(0, &ch, 1);
1398             return ch;
1399         }else{
1400             return -1;
1401         }
1402     }
1403 #    endif
1404     if(kbhit())
1405         return(getch());
1406 #endif
1407     return -1;
1408 }
1409
1410 static int decode_interrupt_cb(void *ctx)
1411 {
1412     return received_nb_signals > 1;
1413 }
1414
1415 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1416
1417 void av_noreturn exit_program(int ret)
1418 {
1419     int i, j;
1420
1421     for (i = 0; i < nb_filtergraphs; i++) {
1422         avfilter_graph_free(&filtergraphs[i]->graph);
1423         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1424             av_freep(&filtergraphs[i]->inputs[j]);
1425         av_freep(&filtergraphs[i]->inputs);
1426         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1427             av_freep(&filtergraphs[i]->outputs[j]);
1428         av_freep(&filtergraphs[i]->outputs);
1429         av_freep(&filtergraphs[i]);
1430     }
1431     av_freep(&filtergraphs);
1432
1433     /* close files */
1434     for (i = 0; i < nb_output_files; i++) {
1435         AVFormatContext *s = output_files[i]->ctx;
1436         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1437             avio_close(s->pb);
1438         avformat_free_context(s);
1439         av_dict_free(&output_files[i]->opts);
1440         av_freep(&output_files[i]);
1441     }
1442     for (i = 0; i < nb_output_streams; i++) {
1443         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1444         while (bsfc) {
1445             AVBitStreamFilterContext *next = bsfc->next;
1446             av_bitstream_filter_close(bsfc);
1447             bsfc = next;
1448         }
1449         output_streams[i]->bitstream_filters = NULL;
1450
1451         av_freep(&output_streams[i]->filtered_frame);
1452         av_freep(&output_streams[i]);
1453     }
1454     for (i = 0; i < nb_input_files; i++) {
1455         avformat_close_input(&input_files[i]->ctx);
1456         av_freep(&input_files[i]);
1457     }
1458     for (i = 0; i < nb_input_streams; i++) {
1459         av_freep(&input_streams[i]->decoded_frame);
1460         av_dict_free(&input_streams[i]->opts);
1461         free_buffer_pool(input_streams[i]);
1462         av_freep(&input_streams[i]->filters);
1463         av_freep(&input_streams[i]);
1464     }
1465
1466     if (vstats_file)
1467         fclose(vstats_file);
1468     av_free(vstats_filename);
1469
1470     av_freep(&input_streams);
1471     av_freep(&input_files);
1472     av_freep(&output_streams);
1473     av_freep(&output_files);
1474
1475     uninit_opts();
1476
1477     avfilter_uninit();
1478     avformat_network_deinit();
1479
1480     if (received_sigterm) {
1481         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1482                (int) received_sigterm);
1483         exit (255);
1484     }
1485
1486     exit(ret);
1487 }
1488
1489 static void assert_avoptions(AVDictionary *m)
1490 {
1491     AVDictionaryEntry *t;
1492     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1493         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1494         exit_program(1);
1495     }
1496 }
1497
1498 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1499 {
1500     const char *codec_string = encoder ? "encoder" : "decoder";
1501     AVCodec *codec;
1502     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1503         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1504         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1505                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1506                 codec_string, c->codec->name);
1507         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1508         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1509             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1510                    codec_string, codec->name);
1511         exit_program(1);
1512     }
1513 }
1514
1515 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1516 {
1517     if (codec && codec->sample_fmts) {
1518         const enum AVSampleFormat *p = codec->sample_fmts;
1519         for (; *p != -1; p++) {
1520             if (*p == st->codec->sample_fmt)
1521                 break;
1522         }
1523         if (*p == -1) {
1524             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1525                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1526             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1527             av_log(NULL, AV_LOG_WARNING,
1528                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1529                    av_get_sample_fmt_name(st->codec->sample_fmt),
1530                    codec->name,
1531                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1532             st->codec->sample_fmt = codec->sample_fmts[0];
1533         }
1534     }
1535 }
1536
1537 static double
1538 get_sync_ipts(const OutputStream *ost, int64_t pts)
1539 {
1540     OutputFile *of = output_files[ost->file_index];
1541     return (double)(pts - of->start_time) / AV_TIME_BASE;
1542 }
1543
1544 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1545 {
1546     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1547     AVCodecContext          *avctx = ost->st->codec;
1548     int ret;
1549
1550     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1551         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1552         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1553
1554     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1555         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1556         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
1557             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
1558             pkt->pts = pkt->dts = max;
1559         }
1560     }
1561
1562     /*
1563      * Audio encoders may split the packets --  #frames in != #packets out.
1564      * But there is no reordering, so we can limit the number of output packets
1565      * by simply dropping them here.
1566      * Counting encoded video frames needs to be done separately because of
1567      * reordering, see do_video_out()
1568      */
1569     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1570         if (ost->frame_number >= ost->max_frames) {
1571             av_free_packet(pkt);
1572             return;
1573         }
1574         ost->frame_number++;
1575     }
1576
1577     while (bsfc) {
1578         AVPacket new_pkt = *pkt;
1579         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1580                                            &new_pkt.data, &new_pkt.size,
1581                                            pkt->data, pkt->size,
1582                                            pkt->flags & AV_PKT_FLAG_KEY);
1583         if (a > 0) {
1584             av_free_packet(pkt);
1585             new_pkt.destruct = av_destruct_packet;
1586         } else if (a < 0) {
1587             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1588                    bsfc->filter->name, pkt->stream_index,
1589                    avctx->codec ? avctx->codec->name : "copy");
1590             print_error("", a);
1591             if (exit_on_error)
1592                 exit_program(1);
1593         }
1594         *pkt = new_pkt;
1595
1596         bsfc = bsfc->next;
1597     }
1598
1599     pkt->stream_index = ost->index;
1600     ret = av_interleaved_write_frame(s, pkt);
1601     if (ret < 0) {
1602         print_error("av_interleaved_write_frame()", ret);
1603         exit_program(1);
1604     }
1605 }
1606
1607 // static int check_recording_time(OutputStream *ost)
1608 // {
1609 //     OutputFile *of = output_files[ost->file_index];
1610 //
1611 //     if (of->recording_time != INT64_MAX &&
1612 //         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
1613 //                       AV_TIME_BASE_Q) >= 0) {
1614 //         ost->is_past_recording_time = 1;
1615 //         return 0;
1616 //     }
1617 //     return 1;
1618 // }
1619
1620 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1621                          AVFrame *frame)
1622 {
1623     AVCodecContext *enc = ost->st->codec;
1624     AVPacket pkt;
1625     int got_packet = 0;
1626
1627     av_init_packet(&pkt);
1628     pkt.data = NULL;
1629     pkt.size = 0;
1630 #if 0
1631     if (!check_recording_time(ost))
1632         return;
1633 #endif
1634     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
1635         frame->pts = ost->sync_opts;
1636     ost->sync_opts = frame->pts + frame->nb_samples;
1637
1638     av_assert0(pkt.size || !pkt.data);
1639     update_benchmark(NULL);
1640     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1641         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1642         exit_program(1);
1643     }
1644     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1645
1646     if (got_packet) {
1647         if (pkt.pts != AV_NOPTS_VALUE)
1648             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1649         if (pkt.dts != AV_NOPTS_VALUE)
1650             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1651         if (pkt.duration > 0)
1652             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1653
1654         if (debug_ts) {
1655             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1656                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1657                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1658                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1659         }
1660
1661         write_frame(s, &pkt, ost);
1662
1663         audio_size += pkt.size;
1664         av_free_packet(&pkt);
1665     }
1666 }
1667
1668 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1669 {
1670     AVCodecContext *dec;
1671     AVPicture *picture2;
1672     AVPicture picture_tmp;
1673     uint8_t *buf = 0;
1674
1675     dec = ist->st->codec;
1676
1677     /* deinterlace : must be done before any resize */
1678     if (do_deinterlace) {
1679         int size;
1680
1681         /* create temporary picture */
1682         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1683         buf  = av_malloc(size);
1684         if (!buf)
1685             return;
1686
1687         picture2 = &picture_tmp;
1688         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1689
1690         if (avpicture_deinterlace(picture2, picture,
1691                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1692             /* if error, do not deinterlace */
1693             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1694             av_free(buf);
1695             buf = NULL;
1696             picture2 = picture;
1697         }
1698     } else {
1699         picture2 = picture;
1700     }
1701
1702     if (picture != picture2)
1703         *picture = *picture2;
1704     *bufp = buf;
1705 }
1706
1707 static void do_subtitle_out(AVFormatContext *s,
1708                             OutputStream *ost,
1709                             InputStream *ist,
1710                             AVSubtitle *sub,
1711                             int64_t pts)
1712 {
1713     static uint8_t *subtitle_out = NULL;
1714     int subtitle_out_max_size = 1024 * 1024;
1715     int subtitle_out_size, nb, i;
1716     AVCodecContext *enc;
1717     AVPacket pkt;
1718
1719     if (pts == AV_NOPTS_VALUE) {
1720         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1721         if (exit_on_error)
1722             exit_program(1);
1723         return;
1724     }
1725
1726     enc = ost->st->codec;
1727
1728     if (!subtitle_out) {
1729         subtitle_out = av_malloc(subtitle_out_max_size);
1730     }
1731
1732     /* Note: DVB subtitle need one packet to draw them and one other
1733        packet to clear them */
1734     /* XXX: signal it in the codec context ? */
1735     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1736         nb = 2;
1737     else
1738         nb = 1;
1739
1740     for (i = 0; i < nb; i++) {
1741         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1742
1743         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1744         // start_display_time is required to be 0
1745         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1746         sub->end_display_time  -= sub->start_display_time;
1747         sub->start_display_time = 0;
1748         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1749                                                     subtitle_out_max_size, sub);
1750         if (subtitle_out_size < 0) {
1751             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1752             exit_program(1);
1753         }
1754
1755         av_init_packet(&pkt);
1756         pkt.data = subtitle_out;
1757         pkt.size = subtitle_out_size;
1758         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1759         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1760             /* XXX: the pts correction is handled here. Maybe handling
1761                it in the codec would be better */
1762             if (i == 0)
1763                 pkt.pts += 90 * sub->start_display_time;
1764             else
1765                 pkt.pts += 90 * sub->end_display_time;
1766         }
1767         write_frame(s, &pkt, ost);
1768     }
1769 }
1770
1771 static double psnr(double d)
1772 {
1773     return -10.0 * log(d) / log(10.0);
1774 }
1775
1776 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1777                            int frame_size)
1778 {
1779     AVCodecContext *enc;
1780     int frame_number;
1781     double ti1, bitrate, avg_bitrate;
1782
1783     /* this is executed just the first time do_video_stats is called */
1784     if (!vstats_file) {
1785         vstats_file = fopen(vstats_filename, "w");
1786         if (!vstats_file) {
1787             perror("fopen");
1788             exit_program(1);
1789         }
1790     }
1791
1792     enc = ost->st->codec;
1793     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1794         frame_number = ost->frame_number;
1795         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1796         if (enc->flags&CODEC_FLAG_PSNR)
1797             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1798
1799         fprintf(vstats_file,"f_size= %6d ", frame_size);
1800         /* compute pts value */
1801         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1802         if (ti1 < 0.01)
1803             ti1 = 0.01;
1804
1805         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1806         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1807         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1808                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1809         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1810     }
1811 }
1812
1813
1814 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1815                          AVFrame *in_picture, float quality)
1816 {
1817     int nb_frames, i, ret, format_video_sync;
1818     AVCodecContext *enc;
1819     double sync_ipts, delta;
1820     double duration = 0;
1821     int frame_size = 0;
1822     InputStream *ist = NULL;
1823
1824     if (ost->source_index >= 0)
1825         ist = input_streams[ost->source_index];
1826
1827     enc = ost->st->codec;
1828
1829     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
1830         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
1831
1832     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1833     delta = sync_ipts - ost->sync_opts + duration;
1834
1835     /* by default, we output a single frame */
1836     nb_frames = 1;
1837
1838     format_video_sync = video_sync_method;
1839     if (format_video_sync == VSYNC_AUTO)
1840         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1841
1842     switch (format_video_sync) {
1843     case VSYNC_CFR:
1844         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1845         if (delta < -1.1)
1846             nb_frames = 0;
1847         else if (delta > 1.1)
1848             nb_frames = lrintf(delta);
1849         break;
1850     case VSYNC_VFR:
1851         if (delta <= -0.6)
1852             nb_frames = 0;
1853         else if (delta > 0.6)
1854             ost->sync_opts = lrint(sync_ipts);
1855         break;
1856     case VSYNC_DROP:
1857     case VSYNC_PASSTHROUGH:
1858         ost->sync_opts = lrint(sync_ipts);
1859         break;
1860     default:
1861         av_assert0(0);
1862     }
1863
1864     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1865     if (nb_frames == 0) {
1866         nb_frames_drop++;
1867         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1868         return;
1869     } else if (nb_frames > 1) {
1870         nb_frames_dup += nb_frames - 1;
1871         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1872     }
1873
1874     /* duplicates frame if needed */
1875     for (i = 0; i < nb_frames; i++) {
1876         AVPacket pkt;
1877         av_init_packet(&pkt);
1878         pkt.data = NULL;
1879         pkt.size = 0;
1880
1881         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1882             enc->codec->id == CODEC_ID_RAWVIDEO) {
1883             /* raw pictures are written as AVPicture structure to
1884                avoid any copies. We support temporarily the older
1885                method. */
1886             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1887             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1888             pkt.data   = (uint8_t *)in_picture;
1889             pkt.size   =  sizeof(AVPicture);
1890             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1891             pkt.flags |= AV_PKT_FLAG_KEY;
1892
1893             write_frame(s, &pkt, ost);
1894         } else {
1895             int got_packet;
1896             AVFrame big_picture;
1897
1898             big_picture = *in_picture;
1899             /* better than nothing: use input picture interlaced
1900                settings */
1901             big_picture.interlaced_frame = in_picture->interlaced_frame;
1902             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1903                 if (ost->top_field_first == -1)
1904                     big_picture.top_field_first = in_picture->top_field_first;
1905                 else
1906                     big_picture.top_field_first = !!ost->top_field_first;
1907             }
1908
1909             /* handles same_quant here. This is not correct because it may
1910                not be a global option */
1911             big_picture.quality = quality;
1912             if (!enc->me_threshold)
1913                 big_picture.pict_type = 0;
1914             big_picture.pts = ost->sync_opts;
1915             if (ost->forced_kf_index < ost->forced_kf_count &&
1916                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1917                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1918                 ost->forced_kf_index++;
1919             }
1920             update_benchmark(NULL);
1921             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1922             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1923             if (ret < 0) {
1924                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1925                 exit_program(1);
1926             }
1927
1928             if (got_packet) {
1929                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1930                     pkt.pts = ost->sync_opts;
1931
1932                 if (pkt.pts != AV_NOPTS_VALUE)
1933                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1934                 if (pkt.dts != AV_NOPTS_VALUE)
1935                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1936
1937                 if (debug_ts) {
1938                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1939                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1940                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1941                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1942                 }
1943
1944                 write_frame(s, &pkt, ost);
1945                 frame_size = pkt.size;
1946                 video_size += pkt.size;
1947                 av_free_packet(&pkt);
1948
1949                 /* if two pass, output log */
1950                 if (ost->logfile && enc->stats_out) {
1951                     fprintf(ost->logfile, "%s", enc->stats_out);
1952                 }
1953             }
1954         }
1955         ost->sync_opts++;
1956         /*
1957          * For video, number of frames in == number of packets out.
1958          * But there may be reordering, so we can't throw away frames on encoder
1959          * flush, we need to limit them here, before they go into encoder.
1960          */
1961         ost->frame_number++;
1962     }
1963     if (vstats_filename && frame_size)
1964         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
1965 }
1966
1967 /* check for new output on any of the filtergraphs */
1968 static int poll_filters(void)
1969 {
1970     AVFilterBufferRef *picref;
1971     AVFrame *filtered_frame = NULL;
1972     int i, ret, ret_all;
1973     unsigned nb_success, nb_eof;
1974     int64_t frame_pts;
1975
1976     while (1) {
1977         /* Reap all buffers present in the buffer sinks */
1978         for (i = 0; i < nb_output_streams; i++) {
1979             OutputStream *ost = output_streams[i];
1980             OutputFile    *of = output_files[ost->file_index];
1981             int ret = 0;
1982
1983             if (!ost->filter || ost->is_past_recording_time)
1984                 continue;
1985
1986             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1987                 return AVERROR(ENOMEM);
1988             } else
1989                 avcodec_get_frame_defaults(ost->filtered_frame);
1990             filtered_frame = ost->filtered_frame;
1991
1992             while (1) {
1993                 AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
1994                 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1995                     !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1996                     ret = av_buffersink_read_samples(ost->filter->filter, &picref,
1997                                                     ost->st->codec->frame_size);
1998                 else
1999 #ifdef SINKA
2000                     ret = av_buffersink_read(ost->filter->filter, &picref);
2001 #else
2002                     ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
2003                                                        AV_BUFFERSINK_FLAG_NO_REQUEST);
2004 #endif
2005                 if (ret < 0) {
2006                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
2007                         char buf[256];
2008                         av_strerror(ret, buf, sizeof(buf));
2009                         av_log(NULL, AV_LOG_WARNING,
2010                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
2011                     }
2012                     break;
2013                 }
2014                 if (ost->enc->type == AVMEDIA_TYPE_VIDEO)
2015                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2016                 else if (picref->pts != AV_NOPTS_VALUE)
2017                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
2018                                                     ost->filter->filter->inputs[0]->time_base,
2019                                                     ost->st->codec->time_base) -
2020                                         av_rescale_q(of->start_time,
2021                                                     AV_TIME_BASE_Q,
2022                                                     ost->st->codec->time_base);
2023                 //if (ost->source_index >= 0)
2024                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2025
2026                 if (of->start_time && filtered_frame->pts < of->start_time) {
2027                     avfilter_unref_buffer(picref);
2028                     continue;
2029                 }
2030
2031                 switch (ost->filter->filter->inputs[0]->type) {
2032                 case AVMEDIA_TYPE_VIDEO:
2033                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2034                     filtered_frame->pts = frame_pts;
2035                     if (!ost->frame_aspect_ratio)
2036                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2037
2038                     do_video_out(of->ctx, ost, filtered_frame,
2039                                  same_quant ? ost->last_quality :
2040                                               ost->st->codec->global_quality);
2041                     break;
2042                 case AVMEDIA_TYPE_AUDIO:
2043                     avfilter_copy_buf_props(filtered_frame, picref);
2044                     filtered_frame->pts = frame_pts;
2045                     do_audio_out(of->ctx, ost, filtered_frame);
2046                     break;
2047                 default:
2048                     // TODO support subtitle filters
2049                     av_assert0(0);
2050                 }
2051
2052                 avfilter_unref_buffer(picref);
2053             }
2054         }
2055         /* Request frames through all the graphs */
2056         ret_all = nb_success = nb_eof = 0;
2057         for (i = 0; i < nb_filtergraphs; i++) {
2058             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
2059             if (!ret) {
2060                 nb_success++;
2061             } else if (ret == AVERROR_EOF) {
2062                 nb_eof++;
2063             } else if (ret != AVERROR(EAGAIN)) {
2064                 char buf[256];
2065                 av_strerror(ret, buf, sizeof(buf));
2066                 av_log(NULL, AV_LOG_WARNING,
2067                        "Error in request_frame(): %s\n", buf);
2068                 ret_all = ret;
2069             }
2070         }
2071         if (!nb_success)
2072             break;
2073         /* Try again if anything succeeded */
2074     }
2075     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
2076 }
2077
2078 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2079 {
2080     char buf[1024];
2081     OutputStream *ost;
2082     AVFormatContext *oc;
2083     int64_t total_size;
2084     AVCodecContext *enc;
2085     int frame_number, vid, i;
2086     double bitrate;
2087     int64_t pts = INT64_MAX;
2088     static int64_t last_time = -1;
2089     static int qp_histogram[52];
2090     int hours, mins, secs, us;
2091
2092     if (!print_stats && !is_last_report)
2093         return;
2094
2095     if (!is_last_report) {
2096         if (last_time == -1) {
2097             last_time = cur_time;
2098             return;
2099         }
2100         if ((cur_time - last_time) < 500000)
2101             return;
2102         last_time = cur_time;
2103     }
2104
2105
2106     oc = output_files[0]->ctx;
2107
2108     total_size = avio_size(oc->pb);
2109     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2110         total_size = avio_tell(oc->pb);
2111         if (total_size < 0)
2112             total_size = 0;
2113     }
2114
2115     buf[0] = '\0';
2116     vid = 0;
2117     for (i = 0; i < nb_output_streams; i++) {
2118         float q = -1;
2119         ost = output_streams[i];
2120         enc = ost->st->codec;
2121         if (!ost->stream_copy && enc->coded_frame)
2122             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2123         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2124             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2125         }
2126         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2127             float fps, t = (cur_time-timer_start) / 1000000.0;
2128
2129             frame_number = ost->frame_number;
2130             fps = t > 1 ? frame_number / t : 0;
2131             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2132                      frame_number, fps < 9.95, fps, q);
2133             if (is_last_report)
2134                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2135             if (qp_hist) {
2136                 int j;
2137                 int qp = lrintf(q);
2138                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2139                     qp_histogram[qp]++;
2140                 for (j = 0; j < 32; j++)
2141                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2142             }
2143             if (enc->flags&CODEC_FLAG_PSNR) {
2144                 int j;
2145                 double error, error_sum = 0;
2146                 double scale, scale_sum = 0;
2147                 char type[3] = { 'Y','U','V' };
2148                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2149                 for (j = 0; j < 3; j++) {
2150                     if (is_last_report) {
2151                         error = enc->error[j];
2152                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2153                     } else {
2154                         error = enc->coded_frame->error[j];
2155                         scale = enc->width * enc->height * 255.0 * 255.0;
2156                     }
2157                     if (j)
2158                         scale /= 4;
2159                     error_sum += error;
2160                     scale_sum += scale;
2161                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2162                 }
2163                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2164             }
2165             vid = 1;
2166         }
2167         /* compute min output value */
2168         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2169                                       ost->st->time_base, AV_TIME_BASE_Q));
2170     }
2171
2172     secs = pts / AV_TIME_BASE;
2173     us = pts % AV_TIME_BASE;
2174     mins = secs / 60;
2175     secs %= 60;
2176     hours = mins / 60;
2177     mins %= 60;
2178
2179     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2180
2181     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2182              "size=%8.0fkB time=", total_size / 1024.0);
2183     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2184              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2185              (100 * us) / AV_TIME_BASE);
2186     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2187              "bitrate=%6.1fkbits/s", bitrate);
2188
2189     if (nb_frames_dup || nb_frames_drop)
2190         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2191                 nb_frames_dup, nb_frames_drop);
2192
2193     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2194
2195     fflush(stderr);
2196
2197     if (is_last_report) {
2198         int64_t raw= audio_size + video_size + extra_size;
2199         av_log(NULL, AV_LOG_INFO, "\n");
2200         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2201                video_size / 1024.0,
2202                audio_size / 1024.0,
2203                extra_size / 1024.0,
2204                100.0 * (total_size - raw) / raw
2205         );
2206         if(video_size + audio_size + extra_size == 0){
2207             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2208         }
2209     }
2210 }
2211
2212 static void flush_encoders(void)
2213 {
2214     int i, ret;
2215
2216     for (i = 0; i < nb_output_streams; i++) {
2217         OutputStream   *ost = output_streams[i];
2218         AVCodecContext *enc = ost->st->codec;
2219         AVFormatContext *os = output_files[ost->file_index]->ctx;
2220         int stop_encoding = 0;
2221
2222         if (!ost->encoding_needed)
2223             continue;
2224
2225         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2226             continue;
2227         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2228             continue;
2229
2230         for (;;) {
2231             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
2232             const char *desc;
2233             int64_t *size;
2234
2235             switch (ost->st->codec->codec_type) {
2236             case AVMEDIA_TYPE_AUDIO:
2237                 encode = avcodec_encode_audio2;
2238                 desc   = "Audio";
2239                 size   = &audio_size;
2240                 break;
2241             case AVMEDIA_TYPE_VIDEO:
2242                 encode = avcodec_encode_video2;
2243                 desc   = "Video";
2244                 size   = &video_size;
2245                 break;
2246             default:
2247                 stop_encoding = 1;
2248             }
2249
2250             if (encode) {
2251                 AVPacket pkt;
2252                 int got_packet;
2253                 av_init_packet(&pkt);
2254                 pkt.data = NULL;
2255                 pkt.size = 0;
2256
2257                 update_benchmark(NULL);
2258                 ret = encode(enc, &pkt, NULL, &got_packet);
2259                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
2260                 if (ret < 0) {
2261                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
2262                     exit_program(1);
2263                 }
2264                 *size += pkt.size;
2265                 if (ost->logfile && enc->stats_out) {
2266                     fprintf(ost->logfile, "%s", enc->stats_out);
2267                 }
2268                 if (!got_packet) {
2269                     stop_encoding = 1;
2270                     break;
2271                 }
2272                 if (pkt.pts != AV_NOPTS_VALUE)
2273                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2274                 if (pkt.dts != AV_NOPTS_VALUE)
2275                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2276                 write_frame(os, &pkt, ost);
2277             }
2278
2279             if (stop_encoding)
2280                 break;
2281         }
2282     }
2283 }
2284
2285 /*
2286  * Check whether a packet from ist should be written into ost at this time
2287  */
2288 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2289 {
2290     OutputFile *of = output_files[ost->file_index];
2291     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2292
2293     if (ost->source_index != ist_index)
2294         return 0;
2295
2296     if (of->start_time && ist->pts < of->start_time)
2297         return 0;
2298
2299     if (of->recording_time != INT64_MAX &&
2300         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2301                       (AVRational){ 1, 1000000 }) >= 0) {
2302         ost->is_past_recording_time = 1;
2303         return 0;
2304     }
2305
2306     return 1;
2307 }
2308
2309 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2310 {
2311     OutputFile *of = output_files[ost->file_index];
2312     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2313     AVPicture pict;
2314     AVPacket opkt;
2315
2316     av_init_packet(&opkt);
2317
2318     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2319         !ost->copy_initial_nonkeyframes)
2320         return;
2321
2322     /* force the input stream PTS */
2323     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2324         audio_size += pkt->size;
2325     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2326         video_size += pkt->size;
2327         ost->sync_opts++;
2328     }
2329
2330     if (pkt->pts != AV_NOPTS_VALUE)
2331         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2332     else
2333         opkt.pts = AV_NOPTS_VALUE;
2334
2335     if (pkt->dts == AV_NOPTS_VALUE)
2336         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2337     else
2338         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2339     opkt.dts -= ost_tb_start_time;
2340
2341     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2342     opkt.flags    = pkt->flags;
2343
2344     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2345     if (  ost->st->codec->codec_id != CODEC_ID_H264
2346        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2347        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2348        && ost->st->codec->codec_id != CODEC_ID_VC1
2349        ) {
2350         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2351             opkt.destruct = av_destruct_packet;
2352     } else {
2353         opkt.data = pkt->data;
2354         opkt.size = pkt->size;
2355     }
2356     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2357         /* store AVPicture in AVPacket, as expected by the output format */
2358         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2359         opkt.data = (uint8_t *)&pict;
2360         opkt.size = sizeof(AVPicture);
2361         opkt.flags |= AV_PKT_FLAG_KEY;
2362     }
2363
2364     write_frame(of->ctx, &opkt, ost);
2365     ost->st->codec->frame_number++;
2366     av_free_packet(&opkt);
2367 }
2368
2369 static void rate_emu_sleep(InputStream *ist)
2370 {
2371     if (input_files[ist->file_index]->rate_emu) {
2372         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2373         int64_t now = av_gettime() - ist->start;
2374         if (pts > now)
2375             usleep(pts - now);
2376     }
2377 }
2378
2379 static int guess_input_channel_layout(InputStream *ist)
2380 {
2381     AVCodecContext *dec = ist->st->codec;
2382
2383     if (!dec->channel_layout) {
2384         char layout_name[256];
2385
2386         dec->channel_layout = av_get_default_channel_layout(dec->channels);
2387         if (!dec->channel_layout)
2388             return 0;
2389         av_get_channel_layout_string(layout_name, sizeof(layout_name),
2390                                      dec->channels, dec->channel_layout);
2391         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
2392                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
2393     }
2394     return 1;
2395 }
2396
2397 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2398 {
2399     AVFrame *decoded_frame;
2400     AVCodecContext *avctx = ist->st->codec;
2401     int i, ret, resample_changed;
2402
2403     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2404         return AVERROR(ENOMEM);
2405     else
2406         avcodec_get_frame_defaults(ist->decoded_frame);
2407     decoded_frame = ist->decoded_frame;
2408
2409     update_benchmark(NULL);
2410     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2411     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2412     if (ret < 0) {
2413         return ret;
2414     }
2415     if (avctx->sample_rate <= 0) {
2416         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2417         return AVERROR_INVALIDDATA;
2418     }
2419
2420     if (!*got_output) {
2421         /* no audio frame */
2422         if (!pkt->size)
2423             for (i = 0; i < ist->nb_filters; i++)
2424                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
2425                                      AV_BUFFERSRC_FLAG_NO_COPY);
2426         return ret;
2427     }
2428
2429     /* if the decoder provides a pts, use it instead of the last packet pts.
2430        the decoder could be delaying output by a packet or more. */
2431     if (decoded_frame->pts != AV_NOPTS_VALUE)
2432         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2433     else if (pkt->pts != AV_NOPTS_VALUE) {
2434         decoded_frame->pts = pkt->pts;
2435         pkt->pts           = AV_NOPTS_VALUE;
2436     }else
2437         decoded_frame->pts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
2438
2439
2440 #if 1
2441     /* increment next_dts to use for the case where the input stream does not
2442        have timestamps or there are multiple frames in the packet */
2443     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2444                      avctx->sample_rate;
2445     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2446                      avctx->sample_rate;
2447 #endif
2448
2449     rate_emu_sleep(ist);
2450
2451     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
2452                        ist->resample_channels       != avctx->channels               ||
2453                        ist->resample_channel_layout != decoded_frame->channel_layout ||
2454                        ist->resample_sample_rate    != decoded_frame->sample_rate;
2455     if (resample_changed) {
2456         char layout1[64], layout2[64];
2457
2458         if (!guess_input_channel_layout(ist)) {
2459             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
2460                    "layout for Input Stream #%d.%d\n", ist->file_index,
2461                    ist->st->index);
2462             exit_program(1);
2463         }
2464         decoded_frame->channel_layout = avctx->channel_layout;
2465
2466         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
2467                                      ist->resample_channel_layout);
2468         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
2469                                      decoded_frame->channel_layout);
2470
2471         av_log(NULL, AV_LOG_INFO,
2472                "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",
2473                ist->file_index, ist->st->index,
2474                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
2475                ist->resample_channels, layout1,
2476                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
2477                avctx->channels, layout2);
2478
2479         ist->resample_sample_fmt     = decoded_frame->format;
2480         ist->resample_sample_rate    = decoded_frame->sample_rate;
2481         ist->resample_channel_layout = decoded_frame->channel_layout;
2482         ist->resample_channels       = avctx->channels;
2483
2484         for (i = 0; i < nb_filtergraphs; i++)
2485             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2486                 configure_filtergraph(filtergraphs[i]) < 0) {
2487                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2488                 exit_program(1);
2489             }
2490     }
2491
2492     for (i = 0; i < ist->nb_filters; i++)
2493         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
2494
2495     return ret;
2496 }
2497
2498 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2499 {
2500     AVFrame *decoded_frame;
2501     void *buffer_to_free = NULL;
2502     int i, ret = 0, resample_changed;
2503     int64_t best_effort_timestamp;
2504     AVRational *frame_sample_aspect;
2505     float quality;
2506
2507     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2508         return AVERROR(ENOMEM);
2509     else
2510         avcodec_get_frame_defaults(ist->decoded_frame);
2511     decoded_frame = ist->decoded_frame;
2512     pkt->pts  = *pkt_pts;
2513     pkt->dts  = ist->dts;
2514     *pkt_pts  = AV_NOPTS_VALUE;
2515
2516     update_benchmark(NULL);
2517     ret = avcodec_decode_video2(ist->st->codec,
2518                                 decoded_frame, got_output, pkt);
2519     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2520     if (ret < 0)
2521         return ret;
2522
2523     quality = same_quant ? decoded_frame->quality : 0;
2524     if (!*got_output) {
2525         /* no picture yet */
2526         if (!pkt->size)
2527             for (i = 0; i < ist->nb_filters; i++)
2528                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
2529         return ret;
2530     }
2531
2532     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2533     if(best_effort_timestamp != AV_NOPTS_VALUE)
2534         ist->next_pts = ist->pts = decoded_frame->pts = best_effort_timestamp;
2535
2536     pkt->size = 0;
2537     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2538
2539     rate_emu_sleep(ist);
2540
2541     if (ist->st->sample_aspect_ratio.num)
2542         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2543
2544     resample_changed = ist->resample_width   != decoded_frame->width  ||
2545                        ist->resample_height  != decoded_frame->height ||
2546                        ist->resample_pix_fmt != decoded_frame->format;
2547     if (resample_changed) {
2548         av_log(NULL, AV_LOG_INFO,
2549                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2550                ist->file_index, ist->st->index,
2551                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2552                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2553
2554         ist->resample_width   = decoded_frame->width;
2555         ist->resample_height  = decoded_frame->height;
2556         ist->resample_pix_fmt = decoded_frame->format;
2557
2558         for (i = 0; i < nb_filtergraphs; i++)
2559             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2560                 configure_filtergraph(filtergraphs[i]) < 0) {
2561                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2562                 exit_program(1);
2563             }
2564     }
2565
2566     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2567     for (i = 0; i < ist->nb_filters; i++) {
2568         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2569                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2570                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2571         // XXX what an ugly hack
2572         if (ist->filters[i]->graph->nb_outputs == 1)
2573             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2574
2575         if (!frame_sample_aspect->num)
2576             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2577         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2578             FrameBuffer      *buf = decoded_frame->opaque;
2579             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2580                                         decoded_frame->data, decoded_frame->linesize,
2581                                         AV_PERM_READ | AV_PERM_PRESERVE,
2582                                         ist->st->codec->width, ist->st->codec->height,
2583                                         ist->st->codec->pix_fmt);
2584
2585             avfilter_copy_frame_props(fb, decoded_frame);
2586             fb->buf->priv           = buf;
2587             fb->buf->free           = filter_release_buffer;
2588
2589             av_assert0(buf->refcount>0);
2590             buf->refcount++;
2591             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
2592                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
2593                                  AV_BUFFERSRC_FLAG_NO_COPY);
2594         } else
2595         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
2596             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2597             exit_program(1);
2598         }
2599
2600     }
2601
2602     av_free(buffer_to_free);
2603     return ret;
2604 }
2605
2606 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2607 {
2608     AVSubtitle subtitle;
2609     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2610                                           &subtitle, got_output, pkt);
2611     if (ret < 0)
2612         return ret;
2613     if (!*got_output)
2614         return ret;
2615
2616     rate_emu_sleep(ist);
2617
2618     for (i = 0; i < nb_output_streams; i++) {
2619         OutputStream *ost = output_streams[i];
2620
2621         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2622             continue;
2623
2624         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2625     }
2626
2627     avsubtitle_free(&subtitle);
2628     return ret;
2629 }
2630
2631 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2632 static int output_packet(InputStream *ist, const AVPacket *pkt)
2633 {
2634     int ret = 0, i;
2635     int got_output;
2636     int64_t pkt_pts = AV_NOPTS_VALUE;
2637
2638     AVPacket avpkt;
2639     if (!ist->saw_first_ts) {
2640         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;
2641         ist->pts = 0;
2642         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2643             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2644             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2645         }
2646         ist->saw_first_ts = 1;
2647     }
2648
2649     if (ist->next_dts == AV_NOPTS_VALUE)
2650         ist->next_dts = ist->dts;
2651     if (ist->next_pts == AV_NOPTS_VALUE)
2652         ist->next_pts = ist->pts;
2653
2654     if (pkt == NULL) {
2655         /* EOF handling */
2656         av_init_packet(&avpkt);
2657         avpkt.data = NULL;
2658         avpkt.size = 0;
2659         goto handle_eof;
2660     } else {
2661         avpkt = *pkt;
2662     }
2663
2664     if (pkt->dts != AV_NOPTS_VALUE) {
2665         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2666         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2667             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2668     }
2669     if(pkt->pts != AV_NOPTS_VALUE)
2670         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2671
2672     // while we have more to decode or while the decoder did output something on EOF
2673     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2674         int duration;
2675     handle_eof:
2676
2677         ist->pts = ist->next_pts;
2678         ist->dts = ist->next_dts;
2679
2680         if (avpkt.size && avpkt.size != pkt->size) {
2681             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2682                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2683             ist->showed_multi_packet_warning = 1;
2684         }
2685
2686         switch (ist->st->codec->codec_type) {
2687         case AVMEDIA_TYPE_AUDIO:
2688             ret = transcode_audio    (ist, &avpkt, &got_output);
2689             break;
2690         case AVMEDIA_TYPE_VIDEO:
2691             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2692             if (avpkt.duration) {
2693                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2694             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2695                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2696                 duration = ((int64_t)AV_TIME_BASE *
2697                                 ist->st->codec->time_base.num * ticks) /
2698                                 ist->st->codec->time_base.den;
2699             } else
2700                 duration = 0;
2701
2702             if(ist->dts != AV_NOPTS_VALUE && duration) {
2703                 ist->next_dts += duration;
2704             }else
2705                 ist->next_dts = AV_NOPTS_VALUE;
2706
2707             if (got_output)
2708                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2709             break;
2710         case AVMEDIA_TYPE_SUBTITLE:
2711             ret = transcode_subtitles(ist, &avpkt, &got_output);
2712             break;
2713         default:
2714             return -1;
2715         }
2716
2717         if (ret < 0)
2718             return ret;
2719
2720         avpkt.dts=
2721         avpkt.pts= AV_NOPTS_VALUE;
2722
2723         // touch data and size only if not EOF
2724         if (pkt) {
2725             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2726                 ret = avpkt.size;
2727             avpkt.data += ret;
2728             avpkt.size -= ret;
2729         }
2730         if (!got_output) {
2731             continue;
2732         }
2733     }
2734
2735     /* handle stream copy */
2736     if (!ist->decoding_needed) {
2737         rate_emu_sleep(ist);
2738         ist->dts = ist->next_dts;
2739         switch (ist->st->codec->codec_type) {
2740         case AVMEDIA_TYPE_AUDIO:
2741             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2742                              ist->st->codec->sample_rate;
2743             break;
2744         case AVMEDIA_TYPE_VIDEO:
2745             if (pkt->duration) {
2746                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2747             } else if(ist->st->codec->time_base.num != 0) {
2748                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2749                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2750                                   ist->st->codec->time_base.num * ticks) /
2751                                   ist->st->codec->time_base.den;
2752             }
2753             break;
2754         }
2755         ist->pts = ist->dts;
2756         ist->next_pts = ist->next_dts;
2757     }
2758     for (i = 0; pkt && i < nb_output_streams; i++) {
2759         OutputStream *ost = output_streams[i];
2760
2761         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2762             continue;
2763
2764         do_streamcopy(ist, ost, pkt);
2765     }
2766
2767     return 0;
2768 }
2769
2770 static void print_sdp(void)
2771 {
2772     char sdp[2048];
2773     int i;
2774     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2775
2776     if (!avc)
2777         exit_program(1);
2778     for (i = 0; i < nb_output_files; i++)
2779         avc[i] = output_files[i]->ctx;
2780
2781     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2782     printf("SDP:\n%s\n", sdp);
2783     fflush(stdout);
2784     av_freep(&avc);
2785 }
2786
2787 static int init_input_stream(int ist_index, char *error, int error_len)
2788 {
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 }
3645
3646 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3647 {
3648     subtitle_codec_name = arg;
3649     return parse_option(o, "codec:s", arg, options);
3650 }
3651
3652 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3653 {
3654     return parse_option(o, "codec:d", arg, options);
3655 }
3656
3657 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3658 {
3659     StreamMap *m = NULL;
3660     int i, negative = 0, file_idx;
3661     int sync_file_idx = -1, sync_stream_idx = 0;
3662     char *p, *sync;
3663     char *map;
3664
3665     if (*arg == '-') {
3666         negative = 1;
3667         arg++;
3668     }
3669     map = av_strdup(arg);
3670
3671     /* parse sync stream first, just pick first matching stream */
3672     if (sync = strchr(map, ',')) {
3673         *sync = 0;
3674         sync_file_idx = strtol(sync + 1, &sync, 0);
3675         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3676             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3677             exit_program(1);
3678         }
3679         if (*sync)
3680             sync++;
3681         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3682             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3683                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3684                 sync_stream_idx = i;
3685                 break;
3686             }
3687         if (i == input_files[sync_file_idx]->nb_streams) {
3688             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3689                                        "match any streams.\n", arg);
3690             exit_program(1);
3691         }
3692     }
3693
3694
3695     if (map[0] == '[') {
3696         /* this mapping refers to lavfi output */
3697         const char *c = map + 1;
3698         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3699                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3700         m = &o->stream_maps[o->nb_stream_maps - 1];
3701         m->linklabel = av_get_token(&c, "]");
3702         if (!m->linklabel) {
3703             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3704             exit_program(1);
3705         }
3706     } else {
3707         file_idx = strtol(map, &p, 0);
3708         if (file_idx >= nb_input_files || file_idx < 0) {
3709             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3710             exit_program(1);
3711         }
3712         if (negative)
3713             /* disable some already defined maps */
3714             for (i = 0; i < o->nb_stream_maps; i++) {
3715                 m = &o->stream_maps[i];
3716                 if (file_idx == m->file_index &&
3717                     check_stream_specifier(input_files[m->file_index]->ctx,
3718                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3719                                            *p == ':' ? p + 1 : p) > 0)
3720                     m->disabled = 1;
3721             }
3722         else
3723             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3724                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3725                             *p == ':' ? p + 1 : p) <= 0)
3726                     continue;
3727                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3728                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3729                 m = &o->stream_maps[o->nb_stream_maps - 1];
3730
3731                 m->file_index   = file_idx;
3732                 m->stream_index = i;
3733
3734                 if (sync_file_idx >= 0) {
3735                     m->sync_file_index   = sync_file_idx;
3736                     m->sync_stream_index = sync_stream_idx;
3737                 } else {
3738                     m->sync_file_index   = file_idx;
3739                     m->sync_stream_index = i;
3740                 }
3741             }
3742     }
3743
3744     if (!m) {
3745         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3746         exit_program(1);
3747     }
3748
3749     av_freep(&map);
3750     return 0;
3751 }
3752
3753 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3754 {
3755     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3756                                 &o->nb_attachments, o->nb_attachments + 1);
3757     o->attachments[o->nb_attachments - 1] = arg;
3758     return 0;
3759 }
3760
3761 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3762 {
3763     int n;
3764     AVStream *st;
3765     AudioChannelMap *m;
3766
3767     o->audio_channel_maps =
3768         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3769                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3770     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3771
3772     /* muted channel syntax */
3773     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3774     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3775         m->file_idx = m->stream_idx = -1;
3776         if (n == 1)
3777             m->ofile_idx = m->ostream_idx = -1;
3778         return 0;
3779     }
3780
3781     /* normal syntax */
3782     n = sscanf(arg, "%d.%d.%d:%d.%d",
3783                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3784                &m->ofile_idx, &m->ostream_idx);
3785
3786     if (n != 3 && n != 5) {
3787         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3788                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3789         exit_program(1);
3790     }
3791
3792     if (n != 5) // only file.stream.channel specified
3793         m->ofile_idx = m->ostream_idx = -1;
3794
3795     /* check input */
3796     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3797         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3798                m->file_idx);
3799         exit_program(1);
3800     }
3801     if (m->stream_idx < 0 ||
3802         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3803         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3804                m->file_idx, m->stream_idx);
3805         exit_program(1);
3806     }
3807     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3808     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3809         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3810                m->file_idx, m->stream_idx);
3811         exit_program(1);
3812     }
3813     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3814         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3815                m->file_idx, m->stream_idx, m->channel_idx);
3816         exit_program(1);
3817     }
3818     return 0;
3819 }
3820
3821 /**
3822  * Parse a metadata specifier in arg.
3823  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3824  * @param index for type c/p, chapter/program index is written here
3825  * @param stream_spec for type s, the stream specifier is written here
3826  */
3827 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3828 {
3829     if (*arg) {
3830         *type = *arg;
3831         switch (*arg) {
3832         case 'g':
3833             break;
3834         case 's':
3835             if (*(++arg) && *arg != ':') {
3836                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3837                 exit_program(1);
3838             }
3839             *stream_spec = *arg == ':' ? arg + 1 : "";
3840             break;
3841         case 'c':
3842         case 'p':
3843             if (*(++arg) == ':')
3844                 *index = strtol(++arg, NULL, 0);
3845             break;
3846         default:
3847             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3848             exit_program(1);
3849         }
3850     } else
3851         *type = 'g';
3852 }
3853
3854 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3855 {
3856     AVDictionary **meta_in = NULL;
3857     AVDictionary **meta_out = NULL;
3858     int i, ret = 0;
3859     char type_in, type_out;
3860     const char *istream_spec = NULL, *ostream_spec = NULL;
3861     int idx_in = 0, idx_out = 0;
3862
3863     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3864     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3865
3866     if (!ic) {
3867         if (type_out == 'g' || !*outspec)
3868             o->metadata_global_manual = 1;
3869         if (type_out == 's' || !*outspec)
3870             o->metadata_streams_manual = 1;
3871         if (type_out == 'c' || !*outspec)
3872             o->metadata_chapters_manual = 1;
3873         return 0;
3874     }
3875
3876     if (type_in == 'g' || type_out == 'g')
3877         o->metadata_global_manual = 1;
3878     if (type_in == 's' || type_out == 's')
3879         o->metadata_streams_manual = 1;
3880     if (type_in == 'c' || type_out == 'c')
3881         o->metadata_chapters_manual = 1;
3882
3883 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3884     if ((index) < 0 || (index) >= (nb_elems)) {\
3885         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3886                 (desc), (index));\
3887         exit_program(1);\
3888     }
3889
3890 #define SET_DICT(type, meta, context, index)\
3891         switch (type) {\
3892         case 'g':\
3893             meta = &context->metadata;\
3894             break;\
3895         case 'c':\
3896             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3897             meta = &context->chapters[index]->metadata;\
3898             break;\
3899         case 'p':\
3900             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3901             meta = &context->programs[index]->metadata;\
3902             break;\
3903         }\
3904
3905     SET_DICT(type_in, meta_in, ic, idx_in);
3906     SET_DICT(type_out, meta_out, oc, idx_out);
3907
3908     /* for input streams choose first matching stream */
3909     if (type_in == 's') {
3910         for (i = 0; i < ic->nb_streams; i++) {
3911             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
39