Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavcodec/audioconvert.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavutil/timestamp.h"
53 #include "libavformat/os_support.h"
54 #include "libswresample/swresample.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/buffersink.h"
62 # include "libavfilter/buffersrc.h"
63 # include "libavfilter/vsrc_buffer.h"
64
65 #if HAVE_SYS_RESOURCE_H
66 #include <sys/types.h>
67 #include <sys/time.h>
68 #include <sys/resource.h>
69 #elif HAVE_GETPROCESSTIMES
70 #include <windows.h>
71 #endif
72 #if HAVE_GETPROCESSMEMORYINFO
73 #include <windows.h>
74 #include <psapi.h>
75 #endif
76
77 #if HAVE_SYS_SELECT_H
78 #include <sys/select.h>
79 #endif
80
81 #if HAVE_TERMIOS_H
82 #include <fcntl.h>
83 #include <sys/ioctl.h>
84 #include <sys/time.h>
85 #include <termios.h>
86 #elif HAVE_KBHIT
87 #include <conio.h>
88 #endif
89 #include <time.h>
90
91 #include "cmdutils.h"
92
93 #include "libavutil/avassert.h"
94
95 #define VSYNC_AUTO       -1
96 #define VSYNC_PASSTHROUGH 0
97 #define VSYNC_CFR         1
98 #define VSYNC_VFR         2
99 #define VSYNC_DROP        0xff
100
101 const char program_name[] = "ffmpeg";
102 const int program_birth_year = 2000;
103
104 /* select an input stream for an output stream */
105 typedef struct StreamMap {
106     int disabled;           /** 1 is this mapping is disabled by a negative map */
107     int file_index;
108     int stream_index;
109     int sync_file_index;
110     int sync_stream_index;
111     char *linklabel;       /** name of an output link, for mapping lavfi outputs */
112 } StreamMap;
113
114 typedef struct {
115     int  file_idx,  stream_idx,  channel_idx; // input
116     int ofile_idx, ostream_idx;               // output
117 } AudioChannelMap;
118
119 static const OptionDef options[];
120
121 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
122
123 static int frame_bits_per_raw_sample = 0;
124 static int video_discard = 0;
125 static int same_quant = 0;
126 static int do_deinterlace = 0;
127 static int intra_dc_precision = 8;
128 static int qp_hist = 0;
129 static int intra_only = 0;
130 static const char *video_codec_name    = NULL;
131 static const char *audio_codec_name    = NULL;
132 static const char *subtitle_codec_name = NULL;
133
134 static int file_overwrite = 0;
135 static int no_file_overwrite = 0;
136 static int do_benchmark = 0;
137 static int do_benchmark_all = 0;
138 static int do_hex_dump = 0;
139 static int do_pkt_dump = 0;
140 static int do_psnr = 0;
141 static int do_pass = 0;
142 static const char *pass_logfilename_prefix;
143 static int video_sync_method = VSYNC_AUTO;
144 static int audio_sync_method = 0;
145 static float audio_drift_threshold = 0.1;
146 static int copy_ts = 0;
147 static int copy_tb = -1;
148 static int opt_shortest = 0;
149 static char *vstats_filename;
150 static FILE *vstats_file;
151
152 static int audio_volume = 256;
153
154 static int exit_on_error = 0;
155 static int using_stdin = 0;
156 static int run_as_daemon  = 0;
157 static volatile int received_nb_signals = 0;
158 static int64_t video_size = 0;
159 static int64_t audio_size = 0;
160 static int64_t extra_size = 0;
161 static int nb_frames_dup = 0;
162 static int nb_frames_drop = 0;
163 static int input_sync;
164
165 static float dts_delta_threshold = 10;
166 static float dts_error_threshold = 3600*30;
167
168 static int print_stats = 1;
169 static int debug_ts = 0;
170 static int current_time;
171
172 static uint8_t *audio_buf;
173 static unsigned int allocated_audio_buf_size;
174 static uint8_t *async_buf;
175 static unsigned int allocated_async_buf_size;
176
177 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
178
179 typedef struct InputFilter {
180     AVFilterContext    *filter;
181     struct InputStream *ist;
182     struct FilterGraph *graph;
183 } InputFilter;
184
185 typedef struct OutputFilter {
186     AVFilterContext     *filter;
187     struct OutputStream *ost;
188     struct FilterGraph  *graph;
189
190     /* temporary storage until stream maps are processed */
191     AVFilterInOut       *out_tmp;
192 } OutputFilter;
193
194 typedef struct FilterGraph {
195     int            index;
196     const char    *graph_desc;
197
198     AVFilterGraph *graph;
199
200     InputFilter   **inputs;
201     int          nb_inputs;
202     OutputFilter **outputs;
203     int         nb_outputs;
204 } FilterGraph;
205
206 typedef struct FrameBuffer {
207     uint8_t *base[4];
208     uint8_t *data[4];
209     int  linesize[4];
210
211     int h, w;
212     enum PixelFormat pix_fmt;
213
214     int refcount;
215     struct InputStream *ist;
216     struct FrameBuffer *next;
217 } FrameBuffer;
218
219 typedef struct InputStream {
220     int file_index;
221     AVStream *st;
222     int discard;             /* true if stream data should be discarded */
223     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
224     AVCodec *dec;
225     AVFrame *decoded_frame;
226
227     int64_t       start;     /* time when read started */
228     /* predicted dts of the next packet read for this stream or (when there are
229      * several frames in a packet) of the next frame in current packet */
230     int64_t       next_dts;
231     /* dts of the last packet read for this stream */
232     int64_t       dts;
233
234     int64_t       next_pts;  ///< synthetic pts for the next decode frame
235     int64_t       pts;       ///< current pts of the decoded frame
236     double ts_scale;
237     int is_start;            /* is 1 at the start and after a discontinuity */
238     int showed_multi_packet_warning;
239     AVDictionary *opts;
240
241     int resample_height;
242     int resample_width;
243     int resample_pix_fmt;
244
245     /* a pool of free buffers for decoded data */
246     FrameBuffer *buffer_pool;
247     int dr1;
248
249     /* decoded data from this stream goes into all those filters
250      * currently video only */
251     InputFilter **filters;
252     int        nb_filters;
253 } InputStream;
254
255 typedef struct InputFile {
256     AVFormatContext *ctx;
257     int eof_reached;      /* true if eof reached */
258     int ist_index;        /* index of first stream in input_streams */
259     int buffer_size;      /* current total buffer size */
260     int64_t ts_offset;
261     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
262                              from ctx.nb_streams if new streams appear during av_read_frame() */
263     int rate_emu;
264 } InputFile;
265
266 typedef struct OutputStream {
267     int file_index;          /* file index */
268     int index;               /* stream index in the output file */
269     int source_index;        /* InputStream index */
270     AVStream *st;            /* stream in the output file */
271     int encoding_needed;     /* true if encoding needed for this stream */
272     int frame_number;
273     /* input pts and corresponding output pts
274        for A/V sync */
275     struct InputStream *sync_ist; /* input stream to sync against */
276     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
277     AVBitStreamFilterContext *bitstream_filters;
278     AVCodec *enc;
279     int64_t max_frames;
280     AVFrame *output_frame;
281     AVFrame *filtered_frame;
282
283     /* video only */
284     AVRational frame_rate;
285     int force_fps;
286     int top_field_first;
287
288     float frame_aspect_ratio;
289     float last_quality;
290
291     /* forced key frames */
292     int64_t *forced_kf_pts;
293     int forced_kf_count;
294     int forced_kf_index;
295
296     /* audio only */
297     int audio_resample;
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     int resample_sample_fmt;
301     int resample_channels;
302     int resample_sample_rate;
303     float rematrix_volume;
304     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
305     FILE *logfile;
306
307     SwrContext *swr;
308
309     OutputFilter *filter;
310     char *avfilter;
311
312     int64_t sws_flags;
313     int64_t swr_dither_method;
314     double swr_dither_scale;
315     AVDictionary *opts;
316     int is_past_recording_time;
317     int stream_copy;
318     const char *attachment_filename;
319     int copy_initial_nonkeyframes;
320
321     enum PixelFormat pix_fmts[2];
322 } OutputStream;
323
324
325 #if HAVE_TERMIOS_H
326
327 /* init terminal so that we can grab keys */
328 static struct termios oldtty;
329 static int restore_tty;
330 #endif
331
332 typedef struct OutputFile {
333     AVFormatContext *ctx;
334     AVDictionary *opts;
335     int ost_index;       /* index of the first stream in output_streams */
336     int64_t recording_time; /* desired length of the resulting file in microseconds */
337     int64_t start_time;     /* start time in microseconds */
338     uint64_t limit_filesize; /* filesize limit expressed in bytes */
339 } OutputFile;
340
341 static InputStream **input_streams = NULL;
342 static int        nb_input_streams = 0;
343 static InputFile   **input_files   = NULL;
344 static int        nb_input_files   = 0;
345
346 static OutputStream **output_streams = NULL;
347 static int         nb_output_streams = 0;
348 static OutputFile   **output_files   = NULL;
349 static int         nb_output_files   = 0;
350
351 static FilterGraph **filtergraphs;
352 int               nb_filtergraphs;
353
354 typedef struct OptionsContext {
355     /* input/output options */
356     int64_t start_time;
357     const char *format;
358
359     SpecifierOpt *codec_names;
360     int        nb_codec_names;
361     SpecifierOpt *audio_channels;
362     int        nb_audio_channels;
363     SpecifierOpt *audio_sample_rate;
364     int        nb_audio_sample_rate;
365     SpecifierOpt *rematrix_volume;
366     int        nb_rematrix_volume;
367     SpecifierOpt *frame_rates;
368     int        nb_frame_rates;
369     SpecifierOpt *frame_sizes;
370     int        nb_frame_sizes;
371     SpecifierOpt *frame_pix_fmts;
372     int        nb_frame_pix_fmts;
373
374     /* input options */
375     int64_t input_ts_offset;
376     int rate_emu;
377
378     SpecifierOpt *ts_scale;
379     int        nb_ts_scale;
380     SpecifierOpt *dump_attachment;
381     int        nb_dump_attachment;
382
383     /* output options */
384     StreamMap *stream_maps;
385     int     nb_stream_maps;
386     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
387     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
388     int metadata_global_manual;
389     int metadata_streams_manual;
390     int metadata_chapters_manual;
391     const char **attachments;
392     int       nb_attachments;
393
394     int chapters_input_file;
395
396     int64_t recording_time;
397     uint64_t limit_filesize;
398     float mux_preload;
399     float mux_max_delay;
400
401     int video_disable;
402     int audio_disable;
403     int subtitle_disable;
404     int data_disable;
405
406     /* indexed by output file stream index */
407     int   *streamid_map;
408     int nb_streamid_map;
409
410     SpecifierOpt *metadata;
411     int        nb_metadata;
412     SpecifierOpt *max_frames;
413     int        nb_max_frames;
414     SpecifierOpt *bitstream_filters;
415     int        nb_bitstream_filters;
416     SpecifierOpt *codec_tags;
417     int        nb_codec_tags;
418     SpecifierOpt *sample_fmts;
419     int        nb_sample_fmts;
420     SpecifierOpt *qscale;
421     int        nb_qscale;
422     SpecifierOpt *forced_key_frames;
423     int        nb_forced_key_frames;
424     SpecifierOpt *force_fps;
425     int        nb_force_fps;
426     SpecifierOpt *frame_aspect_ratios;
427     int        nb_frame_aspect_ratios;
428     SpecifierOpt *rc_overrides;
429     int        nb_rc_overrides;
430     SpecifierOpt *intra_matrices;
431     int        nb_intra_matrices;
432     SpecifierOpt *inter_matrices;
433     int        nb_inter_matrices;
434     SpecifierOpt *top_field_first;
435     int        nb_top_field_first;
436     SpecifierOpt *metadata_map;
437     int        nb_metadata_map;
438     SpecifierOpt *presets;
439     int        nb_presets;
440     SpecifierOpt *copy_initial_nonkeyframes;
441     int        nb_copy_initial_nonkeyframes;
442     SpecifierOpt *filters;
443     int        nb_filters;
444 } OptionsContext;
445
446 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
447 {\
448     int i, ret;\
449     for (i = 0; i < o->nb_ ## name; i++) {\
450         char *spec = o->name[i].specifier;\
451         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
452             outvar = o->name[i].u.type;\
453         else if (ret < 0)\
454             exit_program(1);\
455     }\
456 }
457
458 static int64_t getutime(void)
459 {
460 #if HAVE_GETRUSAGE
461     struct rusage rusage;
462
463     getrusage(RUSAGE_SELF, &rusage);
464     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
465 #elif HAVE_GETPROCESSTIMES
466     HANDLE proc;
467     FILETIME c, e, k, u;
468     proc = GetCurrentProcess();
469     GetProcessTimes(proc, &c, &e, &k, &u);
470     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
471 #else
472     return av_gettime();
473 #endif
474 }
475
476 static void update_benchmark(const char *fmt, ...)
477 {
478     if (do_benchmark_all) {
479         int64_t t = getutime();
480         va_list va;
481         char buf[1024];
482
483         if (fmt) {
484             va_start(va, fmt);
485             vsnprintf(buf, sizeof(buf), fmt, va);
486             va_end(va);
487             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
488         }
489         current_time = t;
490     }
491 }
492
493 static void reset_options(OptionsContext *o, int is_input)
494 {
495     const OptionDef *po = options;
496     OptionsContext bak= *o;
497     int i;
498
499     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
500     while (po->name) {
501         void *dst = (uint8_t*)o + po->u.off;
502
503         if (po->flags & OPT_SPEC) {
504             SpecifierOpt **so = dst;
505             int i, *count = (int*)(so + 1);
506             for (i = 0; i < *count; i++) {
507                 av_freep(&(*so)[i].specifier);
508                 if (po->flags & OPT_STRING)
509                     av_freep(&(*so)[i].u.str);
510             }
511             av_freep(so);
512             *count = 0;
513         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
514             av_freep(dst);
515         po++;
516     }
517
518     for (i = 0; i < o->nb_stream_maps; i++)
519         av_freep(&o->stream_maps[i].linklabel);
520     av_freep(&o->stream_maps);
521     av_freep(&o->audio_channel_maps);
522     av_freep(&o->streamid_map);
523
524     memset(o, 0, sizeof(*o));
525
526     if(is_input) o->recording_time = bak.recording_time;
527     else         o->recording_time = INT64_MAX;
528     o->mux_max_delay  = 0.7;
529     o->limit_filesize = UINT64_MAX;
530     o->chapters_input_file = INT_MAX;
531
532     uninit_opts();
533     init_opts();
534 }
535
536 static int alloc_buffer(InputStream *ist, AVCodecContext *s, FrameBuffer **pbuf)
537 {
538     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
539     int i, ret;
540     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
541     int h_chroma_shift, v_chroma_shift;
542     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
543     int w = s->width, h = s->height;
544
545     if (!buf)
546         return AVERROR(ENOMEM);
547
548     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
549         w += 2*edge;
550         h += 2*edge;
551     }
552
553     avcodec_align_dimensions(s, &w, &h);
554     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
555                               s->pix_fmt, 32)) < 0) {
556         av_freep(&buf);
557         return ret;
558     }
559     /* XXX this shouldn't be needed, but some tests break without this line
560      * those decoders are buggy and need to be fixed.
561      * the following tests fail:
562      * cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
563      */
564     memset(buf->base[0], 128, ret);
565
566     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
567     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
568         const int h_shift = i==0 ? 0 : h_chroma_shift;
569         const int v_shift = i==0 ? 0 : v_chroma_shift;
570         if ((s->flags & CODEC_FLAG_EMU_EDGE) || !buf->linesize[1])
571             buf->data[i] = buf->base[i];
572         else
573             buf->data[i] = buf->base[i] +
574                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
575                                    (pixel_size*edge >> h_shift), 32);
576     }
577     buf->w       = s->width;
578     buf->h       = s->height;
579     buf->pix_fmt = s->pix_fmt;
580     buf->ist     = ist;
581
582     *pbuf = buf;
583     return 0;
584 }
585
586 static void free_buffer_pool(InputStream *ist)
587 {
588     FrameBuffer *buf = ist->buffer_pool;
589     while (buf) {
590         ist->buffer_pool = buf->next;
591         av_freep(&buf->base[0]);
592         av_free(buf);
593         buf = ist->buffer_pool;
594     }
595 }
596
597 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
598 {
599     av_assert0(buf->refcount);
600     buf->refcount--;
601     if (!buf->refcount) {
602         buf->next = ist->buffer_pool;
603         ist->buffer_pool = buf;
604     }
605 }
606
607 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
608 {
609     InputStream *ist = s->opaque;
610     FrameBuffer *buf;
611     int ret, i;
612
613     if(av_image_check_size(s->width, s->height, 0, s) || s->pix_fmt<0)
614         return -1;
615
616     if (!ist->buffer_pool && (ret = alloc_buffer(ist, s, &ist->buffer_pool)) < 0)
617         return ret;
618
619     buf              = ist->buffer_pool;
620     ist->buffer_pool = buf->next;
621     buf->next        = NULL;
622     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
623         av_freep(&buf->base[0]);
624         av_free(buf);
625         if ((ret = alloc_buffer(ist, s, &buf)) < 0)
626             return ret;
627     }
628     buf->refcount++;
629
630     frame->opaque        = buf;
631     frame->type          = FF_BUFFER_TYPE_USER;
632     frame->extended_data = frame->data;
633     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
634     frame->width         = buf->w;
635     frame->height        = buf->h;
636     frame->format        = buf->pix_fmt;
637     frame->sample_aspect_ratio = s->sample_aspect_ratio;
638
639     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
640         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
641         frame->data[i]     = buf->data[i];
642         frame->linesize[i] = buf->linesize[i];
643     }
644
645     return 0;
646 }
647
648 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
649 {
650     InputStream *ist = s->opaque;
651     FrameBuffer *buf = frame->opaque;
652     int i;
653
654     if(frame->type!=FF_BUFFER_TYPE_USER)
655         return avcodec_default_release_buffer(s, frame);
656
657     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
658         frame->data[i] = NULL;
659
660     unref_buffer(ist, buf);
661 }
662
663 static void filter_release_buffer(AVFilterBuffer *fb)
664 {
665     FrameBuffer *buf = fb->priv;
666     av_free(fb);
667     unref_buffer(buf->ist, buf);
668 }
669
670 static enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
671 {
672     if (codec && codec->pix_fmts) {
673         const enum PixelFormat *p = codec->pix_fmts;
674         int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
675         enum PixelFormat best= PIX_FMT_NONE;
676         if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
677             if (st->codec->codec_id == CODEC_ID_MJPEG) {
678                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
679             } else if (st->codec->codec_id == CODEC_ID_LJPEG) {
680                 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
681                                                  PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
682             }
683         }
684         for (; *p != PIX_FMT_NONE; p++) {
685             best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
686             if (*p == target)
687                 break;
688         }
689         if (*p == PIX_FMT_NONE) {
690             if (target != PIX_FMT_NONE)
691                 av_log(NULL, AV_LOG_WARNING,
692                        "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
693                        av_pix_fmt_descriptors[target].name,
694                        codec->name,
695                        av_pix_fmt_descriptors[best].name);
696             return best;
697         }
698     }
699     return target;
700 }
701
702 static const enum PixelFormat *choose_pixel_fmts(OutputStream *ost)
703 {
704     if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
705         ost->pix_fmts[0] = choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt);
706         return ost->pix_fmts;
707     } else if (ost->enc->pix_fmts) {
708         if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
709             if (ost->st->codec->codec_id == CODEC_ID_MJPEG) {
710                 return (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
711             } else if (ost->st->codec->codec_id == CODEC_ID_LJPEG) {
712                 return (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
713                                                     PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
714             }
715         }
716         return ost->enc->pix_fmts;
717     } else
718         return NULL;
719 }
720
721 static int configure_video_filters(FilterGraph *fg)
722 {
723     InputStream  *ist = fg->inputs[0]->ist;
724     OutputStream *ost = fg->outputs[0]->ost;
725     AVFilterContext *last_filter, *filter;
726     /** filter graph containing all filters including input & output */
727     AVCodecContext *codec = ost->st->codec;
728     enum PixelFormat *pix_fmts = choose_pixel_fmts(ost);
729     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
730     AVRational sample_aspect_ratio;
731     char args[255];
732     int ret;
733
734     avfilter_graph_free(&fg->graph);
735     fg->graph = avfilter_graph_alloc();
736     if (!fg->graph)
737         return AVERROR(ENOMEM);
738
739     if (ist->st->sample_aspect_ratio.num) {
740         sample_aspect_ratio = ist->st->sample_aspect_ratio;
741     } else
742         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
743
744     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d:flags=%d", ist->st->codec->width,
745              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
746              sample_aspect_ratio.num, sample_aspect_ratio.den, SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
747
748     ret = avfilter_graph_create_filter(&fg->inputs[0]->filter,
749                                        avfilter_get_by_name("buffer"),
750                                        "src", args, NULL, fg->graph);
751     if (ret < 0)
752         return ret;
753
754 #if FF_API_OLD_VSINK_API
755     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter, avfilter_get_by_name("buffersink"),
756                                        "out", NULL, pix_fmts, fg->graph);
757 #else
758     buffersink_params->pixel_fmts = pix_fmts;
759     ret = avfilter_graph_create_filter(&fg->outputs[0]->filter, avfilter_get_by_name("buffersink"),
760                                        "out", NULL, buffersink_params, fg->graph);
761 #endif
762     av_freep(&buffersink_params);
763
764     if (ret < 0)
765         return ret;
766     last_filter = fg->inputs[0]->filter;
767
768     if (codec->width || codec->height) {
769         snprintf(args, 255, "%d:%d:flags=0x%X",
770                  codec->width,
771                  codec->height,
772                  (unsigned)ost->sws_flags);
773         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
774                                                 NULL, args, NULL, fg->graph)) < 0)
775             return ret;
776         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
777             return ret;
778         last_filter = filter;
779     }
780
781     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
782     fg->graph->scale_sws_opts = av_strdup(args);
783
784     if (ost->avfilter) {
785         AVFilterInOut *outputs = avfilter_inout_alloc();
786         AVFilterInOut *inputs  = avfilter_inout_alloc();
787
788         outputs->name    = av_strdup("in");
789         outputs->filter_ctx = last_filter;
790         outputs->pad_idx = 0;
791         outputs->next    = NULL;
792
793         inputs->name    = av_strdup("out");
794         inputs->filter_ctx = fg->outputs[0]->filter;
795         inputs->pad_idx = 0;
796         inputs->next    = NULL;
797
798         if ((ret = avfilter_graph_parse(fg->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
799             return ret;
800         av_freep(&ost->avfilter);
801     } else {
802         if ((ret = avfilter_link(last_filter, 0, fg->outputs[0]->filter, 0)) < 0)
803             return ret;
804     }
805
806     if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
807         return ret;
808
809     ost->filter = fg->outputs[0];
810
811     return 0;
812 }
813
814 static FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
815 {
816     FilterGraph *fg = av_mallocz(sizeof(*fg));
817
818     if (!fg)
819         exit_program(1);
820     fg->index = nb_filtergraphs;
821
822     fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
823                              fg->nb_outputs + 1);
824     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
825         exit_program(1);
826     fg->outputs[0]->ost   = ost;
827     fg->outputs[0]->graph = fg;
828
829     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
830                             fg->nb_inputs + 1);
831     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
832         exit_program(1);
833     fg->inputs[0]->ist   = ist;
834     fg->inputs[0]->graph = fg;
835
836     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
837                               &ist->nb_filters, ist->nb_filters + 1);
838     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
839
840     filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
841                               &nb_filtergraphs, nb_filtergraphs + 1);
842     filtergraphs[nb_filtergraphs - 1] = fg;
843
844     return fg;
845 }
846
847 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
848 {
849     InputStream *ist;
850     enum AVMediaType type = in->filter_ctx->input_pads[in->pad_idx].type;
851     int i;
852
853     // TODO: support other filter types
854     if (type != AVMEDIA_TYPE_VIDEO) {
855         av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
856         exit_program(1);
857     }
858
859     if (in->name) {
860         AVFormatContext *s;
861         AVStream       *st = NULL;
862         char *p;
863         int file_idx = strtol(in->name, &p, 0);
864
865         if (file_idx < 0 || file_idx > nb_input_files) {
866             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
867                    file_idx, fg->graph_desc);
868             exit_program(1);
869         }
870         s = input_files[file_idx]->ctx;
871
872         for (i = 0; i < s->nb_streams; i++) {
873             if (s->streams[i]->codec->codec_type != type)
874                 continue;
875             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
876                 st = s->streams[i];
877                 break;
878             }
879         }
880         if (!st) {
881             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
882                    "matches no streams.\n", p, fg->graph_desc);
883             exit_program(1);
884         }
885         ist = input_streams[input_files[file_idx]->ist_index + st->index];
886     } else {
887         /* find the first unused stream of corresponding type */
888         for (i = 0; i < nb_input_streams; i++) {
889             ist = input_streams[i];
890             if (ist->st->codec->codec_type == type && ist->discard)
891                 break;
892         }
893         if (i == nb_input_streams) {
894             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
895                    "unlabeled input pad %d on filter %s", in->pad_idx,
896                    in->filter_ctx->name);
897             exit_program(1);
898         }
899     }
900     ist->discard         = 0;
901     ist->decoding_needed = 1;
902     ist->st->discard = AVDISCARD_NONE;
903
904     fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
905                             &fg->nb_inputs, fg->nb_inputs + 1);
906     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
907         exit_program(1);
908     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
909     fg->inputs[fg->nb_inputs - 1]->graph = fg;
910
911     ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
912                               &ist->nb_filters, ist->nb_filters + 1);
913     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
914 }
915
916 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
917 {
918     AVCodecContext *codec = ofilter->ost->st->codec;
919     AVFilterContext *last_filter = out->filter_ctx;
920     int pad_idx = out->pad_idx;
921     int ret;
922     enum PixelFormat *pix_fmts = choose_pixel_fmts(ofilter->ost);
923     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
924
925 #if FF_API_OLD_VSINK_API
926     ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("buffersink"),
927                                        "out", NULL, pix_fmts, fg->graph);
928 #else
929     buffersink_params->pixel_fmts = pix_fmts;
930     ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("buffersink"),
931                                        "out", NULL, buffersink_params, fg->graph);
932 #endif
933     av_freep(&buffersink_params);
934
935     if (ret < 0)
936         return ret;
937
938     if (codec->width || codec->height) {
939         char args[255];
940         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
941                  codec->width,
942                  codec->height,
943                  (unsigned)ofilter->ost->sws_flags);
944         if ((ret = avfilter_graph_create_filter(&last_filter, avfilter_get_by_name("scale"),
945                                                 NULL, args, NULL, fg->graph)) < 0)
946             return ret;
947         if ((ret = avfilter_link(out->filter_ctx, out->pad_idx, last_filter, 0)) < 0)
948             return ret;
949         pad_idx = 0;
950     }
951
952     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
953         return ret;
954
955     return 0;
956 }
957
958 static int configure_complex_filter(FilterGraph *fg)
959 {
960     AVFilterInOut *inputs, *outputs, *cur;
961     int ret, i, init = !fg->graph;
962
963     avfilter_graph_free(&fg->graph);
964     if (!(fg->graph = avfilter_graph_alloc()))
965         return AVERROR(ENOMEM);
966
967     if ((ret = avfilter_graph_parse2(fg->graph, fg->graph_desc, &inputs, &outputs)) < 0)
968         return ret;
969
970     for (cur = inputs; init && cur; cur = cur->next)
971         init_input_filter(fg, cur);
972
973     for (cur = inputs, i = 0; cur; cur = cur->next, i++) {
974         InputFilter *ifilter = fg->inputs[i];
975         InputStream     *ist = ifilter->ist;
976         AVRational       sar;
977         char            args[255];
978
979         sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
980                                                  ist->st->codec->sample_aspect_ratio;
981         snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
982                  ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
983                  sar.num, sar.den);
984
985         if ((ret = avfilter_graph_create_filter(&ifilter->filter,
986                                                 avfilter_get_by_name("buffer"), cur->name,
987                                                 args, NULL, fg->graph)) < 0)
988             return ret;
989         if ((ret = avfilter_link(ifilter->filter, 0,
990                                  cur->filter_ctx, cur->pad_idx)) < 0)
991             return ret;
992     }
993     avfilter_inout_free(&inputs);
994
995     if (!init) {
996         /* we already know the mappings between lavfi outputs and output streams,
997          * so we can finish the setup */
998         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
999             configure_output_filter(fg, fg->outputs[i], cur);
1000         avfilter_inout_free(&outputs);
1001
1002         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1003             return ret;
1004     } else {
1005         /* wait until output mappings are processed */
1006         for (cur = outputs; cur;) {
1007             fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
1008                                      &fg->nb_outputs, fg->nb_outputs + 1);
1009             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
1010                 exit_program(1);
1011             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
1012             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
1013             cur = cur->next;
1014             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
1015         }
1016     }
1017
1018     return 0;
1019 }
1020
1021 static int configure_complex_filters(void)
1022 {
1023     int i, ret = 0;
1024
1025     for (i = 0; i < nb_filtergraphs; i++)
1026         if (!filtergraphs[i]->graph &&
1027             (ret = configure_complex_filter(filtergraphs[i])) < 0)
1028             return ret;
1029     return 0;
1030 }
1031
1032 static int configure_filtergraph(FilterGraph *fg)
1033 {
1034     return fg->graph_desc ? configure_complex_filter(fg) : configure_video_filters(fg);
1035 }
1036
1037 static int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1038 {
1039     int i;
1040     for (i = 0; i < fg->nb_inputs; i++)
1041         if (fg->inputs[i]->ist == ist)
1042             return 1;
1043     return 0;
1044 }
1045
1046 static void term_exit(void)
1047 {
1048     av_log(NULL, AV_LOG_QUIET, "%s", "");
1049 #if HAVE_TERMIOS_H
1050     if(restore_tty)
1051         tcsetattr (0, TCSANOW, &oldtty);
1052 #endif
1053 }
1054
1055 static volatile int received_sigterm = 0;
1056
1057 static void sigterm_handler(int sig)
1058 {
1059     received_sigterm = sig;
1060     received_nb_signals++;
1061     term_exit();
1062     if(received_nb_signals > 3)
1063         exit(123);
1064 }
1065
1066 static void term_init(void)
1067 {
1068 #if HAVE_TERMIOS_H
1069     if(!run_as_daemon){
1070     struct termios tty;
1071
1072     if (tcgetattr (0, &tty) == 0) {
1073     oldtty = tty;
1074     restore_tty = 1;
1075     atexit(term_exit);
1076
1077     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1078                           |INLCR|IGNCR|ICRNL|IXON);
1079     tty.c_oflag |= OPOST;
1080     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1081     tty.c_cflag &= ~(CSIZE|PARENB);
1082     tty.c_cflag |= CS8;
1083     tty.c_cc[VMIN] = 1;
1084     tty.c_cc[VTIME] = 0;
1085
1086     tcsetattr (0, TCSANOW, &tty);
1087     }
1088     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
1089     }
1090 #endif
1091     avformat_network_deinit();
1092
1093     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
1094     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
1095 #ifdef SIGXCPU
1096     signal(SIGXCPU, sigterm_handler);
1097 #endif
1098 }
1099
1100 /* read a key without blocking */
1101 static int read_key(void)
1102 {
1103     unsigned char ch;
1104 #if HAVE_TERMIOS_H
1105     int n = 1;
1106     struct timeval tv;
1107     fd_set rfds;
1108
1109     FD_ZERO(&rfds);
1110     FD_SET(0, &rfds);
1111     tv.tv_sec = 0;
1112     tv.tv_usec = 0;
1113     n = select(1, &rfds, NULL, NULL, &tv);
1114     if (n > 0) {
1115         n = read(0, &ch, 1);
1116         if (n == 1)
1117             return ch;
1118
1119         return n;
1120     }
1121 #elif HAVE_KBHIT
1122 #    if HAVE_PEEKNAMEDPIPE
1123     static int is_pipe;
1124     static HANDLE input_handle;
1125     DWORD dw, nchars;
1126     if(!input_handle){
1127         input_handle = GetStdHandle(STD_INPUT_HANDLE);
1128         is_pipe = !GetConsoleMode(input_handle, &dw);
1129     }
1130
1131     if (stdin->_cnt > 0) {
1132         read(0, &ch, 1);
1133         return ch;
1134     }
1135     if (is_pipe) {
1136         /* When running under a GUI, you will end here. */
1137         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
1138             return -1;
1139         //Read it
1140         if(nchars != 0) {
1141             read(0, &ch, 1);
1142             return ch;
1143         }else{
1144             return -1;
1145         }
1146     }
1147 #    endif
1148     if(kbhit())
1149         return(getch());
1150 #endif
1151     return -1;
1152 }
1153
1154 static int decode_interrupt_cb(void *ctx)
1155 {
1156     return received_nb_signals > 1;
1157 }
1158
1159 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
1160
1161 void av_noreturn exit_program(int ret)
1162 {
1163     int i, j;
1164
1165     for (i = 0; i < nb_filtergraphs; i++) {
1166         avfilter_graph_free(&filtergraphs[i]->graph);
1167         for (j = 0; j < filtergraphs[i]->nb_inputs; j++)
1168             av_freep(&filtergraphs[i]->inputs[j]);
1169         av_freep(&filtergraphs[i]->inputs);
1170         for (j = 0; j < filtergraphs[i]->nb_outputs; j++)
1171             av_freep(&filtergraphs[i]->outputs[j]);
1172         av_freep(&filtergraphs[i]->outputs);
1173         av_freep(&filtergraphs[i]);
1174     }
1175     av_freep(&filtergraphs);
1176
1177     /* close files */
1178     for (i = 0; i < nb_output_files; i++) {
1179         AVFormatContext *s = output_files[i]->ctx;
1180         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1181             avio_close(s->pb);
1182         avformat_free_context(s);
1183         av_dict_free(&output_files[i]->opts);
1184         av_freep(&output_files[i]);
1185     }
1186     for (i = 0; i < nb_output_streams; i++) {
1187         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
1188         while (bsfc) {
1189             AVBitStreamFilterContext *next = bsfc->next;
1190             av_bitstream_filter_close(bsfc);
1191             bsfc = next;
1192         }
1193         output_streams[i]->bitstream_filters = NULL;
1194
1195         if (output_streams[i]->output_frame) {
1196             AVFrame *frame = output_streams[i]->output_frame;
1197             if (frame->extended_data != frame->data)
1198                 av_freep(&frame->extended_data);
1199             av_freep(&frame);
1200         }
1201         av_freep(&output_streams[i]->filtered_frame);
1202         av_freep(&output_streams[i]);
1203     }
1204     for (i = 0; i < nb_input_files; i++) {
1205         avformat_close_input(&input_files[i]->ctx);
1206         av_freep(&input_files[i]);
1207     }
1208     for (i = 0; i < nb_input_streams; i++) {
1209         av_freep(&input_streams[i]->decoded_frame);
1210         av_dict_free(&input_streams[i]->opts);
1211         free_buffer_pool(input_streams[i]);
1212         av_freep(&input_streams[i]->filters);
1213         av_freep(&input_streams[i]);
1214     }
1215
1216     if (vstats_file)
1217         fclose(vstats_file);
1218     av_free(vstats_filename);
1219
1220     av_freep(&input_streams);
1221     av_freep(&input_files);
1222     av_freep(&output_streams);
1223     av_freep(&output_files);
1224
1225     uninit_opts();
1226     av_freep(&audio_buf);
1227     allocated_audio_buf_size = 0;
1228     av_freep(&async_buf);
1229     allocated_async_buf_size = 0;
1230
1231     avfilter_uninit();
1232     avformat_network_deinit();
1233
1234     if (received_sigterm) {
1235         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
1236                (int) received_sigterm);
1237         exit (255);
1238     }
1239
1240     exit(ret); /* not all OS-es handle main() return value */
1241 }
1242
1243 static void assert_avoptions(AVDictionary *m)
1244 {
1245     AVDictionaryEntry *t;
1246     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
1247         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
1248         exit_program(1);
1249     }
1250 }
1251
1252 static void assert_codec_experimental(AVCodecContext *c, int encoder)
1253 {
1254     const char *codec_string = encoder ? "encoder" : "decoder";
1255     AVCodec *codec;
1256     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1257         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1258         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
1259                 "results.\nAdd '-strict experimental' if you want to use it.\n",
1260                 codec_string, c->codec->name);
1261         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
1262         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
1263             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
1264                    codec_string, codec->name);
1265         exit_program(1);
1266     }
1267 }
1268
1269 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
1270 {
1271     if (codec && codec->sample_fmts) {
1272         const enum AVSampleFormat *p = codec->sample_fmts;
1273         for (; *p != -1; p++) {
1274             if (*p == st->codec->sample_fmt)
1275                 break;
1276         }
1277         if (*p == -1) {
1278             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
1279                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
1280             if(av_get_sample_fmt_name(st->codec->sample_fmt))
1281             av_log(NULL, AV_LOG_WARNING,
1282                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
1283                    av_get_sample_fmt_name(st->codec->sample_fmt),
1284                    codec->name,
1285                    av_get_sample_fmt_name(codec->sample_fmts[0]));
1286             st->codec->sample_fmt = codec->sample_fmts[0];
1287         }
1288     }
1289 }
1290
1291 static void choose_sample_rate(AVStream *st, AVCodec *codec)
1292 {
1293     if (codec && codec->supported_samplerates) {
1294         const int *p  = codec->supported_samplerates;
1295         int best      = 0;
1296         int best_dist = INT_MAX;
1297         for (; *p; p++) {
1298             int dist = abs(st->codec->sample_rate - *p);
1299             if (dist < best_dist) {
1300                 best_dist = dist;
1301                 best      = *p;
1302             }
1303         }
1304         if (best_dist) {
1305             int i;
1306             const int *sample_rates = codec->supported_samplerates;
1307             av_log(st->codec, AV_LOG_WARNING,
1308                    "Requested sampling rate (%dHz) unsupported, using %dHz instead\n"
1309                    "Available sampling rates for %s:",
1310                    st->codec->sample_rate, best, codec->name);
1311             for (i = 0; sample_rates[i]; i++) {
1312                 if (!sample_rates[i + 1]) av_log(st->codec, AV_LOG_WARNING, " and");
1313                 else if (i)               av_log(st->codec, AV_LOG_WARNING, ",");
1314                 av_log(st->codec, AV_LOG_WARNING, " %d", sample_rates[i]);
1315             }
1316             av_log(st->codec, AV_LOG_WARNING, ".\n");
1317         }
1318         st->codec->sample_rate = best;
1319     }
1320 }
1321
1322 static double
1323 get_sync_ipts(const OutputStream *ost, int64_t pts)
1324 {
1325     OutputFile *of = output_files[ost->file_index];
1326     return (double)(pts - of->start_time) / AV_TIME_BASE;
1327 }
1328
1329 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
1330 {
1331     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
1332     AVCodecContext          *avctx = ost->st->codec;
1333     int ret;
1334
1335     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
1336         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
1337         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1338
1339     /*
1340      * Audio encoders may split the packets --  #frames in != #packets out.
1341      * But there is no reordering, so we can limit the number of output packets
1342      * by simply dropping them here.
1343      * Counting encoded video frames needs to be done separately because of
1344      * reordering, see do_video_out()
1345      */
1346     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
1347         if (ost->frame_number >= ost->max_frames) {
1348             av_free_packet(pkt);
1349             return;
1350         }
1351         ost->frame_number++;
1352     }
1353
1354     while (bsfc) {
1355         AVPacket new_pkt = *pkt;
1356         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
1357                                            &new_pkt.data, &new_pkt.size,
1358                                            pkt->data, pkt->size,
1359                                            pkt->flags & AV_PKT_FLAG_KEY);
1360         if (a > 0) {
1361             av_free_packet(pkt);
1362             new_pkt.destruct = av_destruct_packet;
1363         } else if (a < 0) {
1364             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
1365                    bsfc->filter->name, pkt->stream_index,
1366                    avctx->codec ? avctx->codec->name : "copy");
1367             print_error("", a);
1368             if (exit_on_error)
1369                 exit_program(1);
1370         }
1371         *pkt = new_pkt;
1372
1373         bsfc = bsfc->next;
1374     }
1375
1376     pkt->stream_index = ost->index;
1377     ret = av_interleaved_write_frame(s, pkt);
1378     if (ret < 0) {
1379         print_error("av_interleaved_write_frame()", ret);
1380         exit_program(1);
1381     }
1382 }
1383
1384 static void get_default_channel_layouts(OutputStream *ost, InputStream *ist)
1385 {
1386     char layout_name[256];
1387     AVCodecContext *enc = ost->st->codec;
1388     AVCodecContext *dec = ist->st->codec;
1389
1390     if (dec->channel_layout &&
1391         av_get_channel_layout_nb_channels(dec->channel_layout) != dec->channels) {
1392         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1393                                      dec->channels, dec->channel_layout);
1394         av_log(NULL, AV_LOG_ERROR, "New channel layout (%s) is invalid\n",
1395                layout_name);
1396         dec->channel_layout = 0;
1397     }
1398     if (!dec->channel_layout) {
1399         if (enc->channel_layout && dec->channels == enc->channels) {
1400             dec->channel_layout = enc->channel_layout;
1401         } else {
1402             dec->channel_layout = av_get_default_channel_layout(dec->channels);
1403
1404             if (!dec->channel_layout) {
1405                 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1406                        "layout for Input Stream #%d.%d\n", ist->file_index,
1407                        ist->st->index);
1408                 exit_program(1);
1409             }
1410         }
1411         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1412                                      dec->channels, dec->channel_layout);
1413         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1414                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1415     }
1416     if (!enc->channel_layout) {
1417         if (dec->channels == enc->channels) {
1418             enc->channel_layout = dec->channel_layout;
1419             return;
1420         } else {
1421             enc->channel_layout = av_get_default_channel_layout(enc->channels);
1422         }
1423         if (!enc->channel_layout) {
1424             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel layout "
1425                    "for Output Stream #%d.%d\n", ost->file_index,
1426                    ost->st->index);
1427             exit_program(1);
1428         }
1429         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1430                                      enc->channels, enc->channel_layout);
1431         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Output Stream "
1432                "#%d.%d : %s\n", ost->file_index, ost->st->index, layout_name);
1433     }
1434 }
1435
1436 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1437 {
1438     int fill_char = 0x00;
1439     if (sample_fmt == AV_SAMPLE_FMT_U8)
1440         fill_char = 0x80;
1441     memset(buf, fill_char, size);
1442 }
1443
1444 static int encode_audio_frame(AVFormatContext *s, OutputStream *ost,
1445                               const uint8_t *buf, int buf_size)
1446 {
1447     AVCodecContext *enc = ost->st->codec;
1448     AVFrame *frame = NULL;
1449     AVPacket pkt;
1450     int ret, got_packet;
1451
1452     av_init_packet(&pkt);
1453     pkt.data = NULL;
1454     pkt.size = 0;
1455
1456     if (buf && buf_size) {
1457         if (!ost->output_frame) {
1458             ost->output_frame = avcodec_alloc_frame();
1459             if (!ost->output_frame) {
1460                 av_log(NULL, AV_LOG_FATAL, "out-of-memory in encode_audio_frame()\n");
1461                 exit_program(1);
1462             }
1463         }
1464         frame = ost->output_frame;
1465         if (frame->extended_data != frame->data)
1466             av_freep(&frame->extended_data);
1467         avcodec_get_frame_defaults(frame);
1468
1469         frame->nb_samples  = buf_size /
1470                              (enc->channels * av_get_bytes_per_sample(enc->sample_fmt));
1471         if ((ret = avcodec_fill_audio_frame(frame, enc->channels, enc->sample_fmt,
1472                                             buf, buf_size, 1)) < 0) {
1473             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_fill_audio_frame)\n");
1474             exit_program(1);
1475         }
1476
1477         frame->pts = ost->sync_opts;
1478         ost->sync_opts += frame->nb_samples;
1479     }
1480
1481     got_packet = 0;
1482     update_benchmark(NULL);
1483     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
1484         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
1485         exit_program(1);
1486     }
1487     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
1488
1489     ret = pkt.size;
1490
1491     if (got_packet) {
1492         if (pkt.pts != AV_NOPTS_VALUE)
1493             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
1494         if (pkt.dts != AV_NOPTS_VALUE) {
1495             int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
1496             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
1497             if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt.dts) {
1498                 av_log(s, max - pkt.dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt.dts, max);
1499                 pkt.pts = pkt.dts = max;
1500             }
1501         }
1502         if (pkt.duration > 0)
1503             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1504
1505         write_frame(s, &pkt, ost);
1506
1507         audio_size += pkt.size;
1508
1509         av_free_packet(&pkt);
1510     }
1511
1512     if (debug_ts) {
1513         av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
1514                "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1515                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1516                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1517     }
1518
1519     return ret;
1520 }
1521
1522 static int alloc_audio_output_buf(AVCodecContext *dec, AVCodecContext *enc,
1523                                   int nb_samples)
1524 {
1525     int64_t audio_buf_samples;
1526     int audio_buf_size;
1527
1528     /* calculate required number of samples to allocate */
1529     audio_buf_samples = ((int64_t)nb_samples * enc->sample_rate + dec->sample_rate) /
1530                         dec->sample_rate;
1531     audio_buf_samples = 4 * audio_buf_samples + 10000; // safety factors for resampling
1532     audio_buf_samples = FFMAX(audio_buf_samples, enc->frame_size);
1533     if (audio_buf_samples > INT_MAX)
1534         return AVERROR(EINVAL);
1535
1536     audio_buf_size = av_samples_get_buffer_size(NULL, enc->channels,
1537                                                 audio_buf_samples,
1538                                                 enc->sample_fmt, 0);
1539     if (audio_buf_size < 0)
1540         return audio_buf_size;
1541
1542     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1543     if (!audio_buf)
1544         return AVERROR(ENOMEM);
1545
1546     return 0;
1547 }
1548
1549 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1550                          InputStream *ist, AVFrame *decoded_frame)
1551 {
1552     uint8_t *buftmp;
1553     int64_t size_out;
1554
1555     int frame_bytes, resample_changed;
1556     AVCodecContext *enc = ost->st->codec;
1557     AVCodecContext *dec = ist->st->codec;
1558     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1559     int isize = av_get_bytes_per_sample(dec->sample_fmt);
1560     uint8_t *buf[AV_NUM_DATA_POINTERS];
1561     int size     = decoded_frame->nb_samples * dec->channels * isize;
1562     int planes   = av_sample_fmt_is_planar(dec->sample_fmt) ? dec->channels : 1;
1563     int i;
1564
1565     av_assert0(planes <= AV_NUM_DATA_POINTERS);
1566
1567     for(i=0; i<planes; i++)
1568         buf[i]= decoded_frame->data[i];
1569
1570     get_default_channel_layouts(ost, ist);
1571
1572     if (alloc_audio_output_buf(dec, enc, decoded_frame->nb_samples) < 0) {
1573         av_log(NULL, AV_LOG_FATAL, "Error allocating audio buffer\n");
1574         exit_program(1);
1575     }
1576
1577     if (enc->channels != dec->channels
1578      || enc->sample_fmt != dec->sample_fmt
1579      || enc->sample_rate!= dec->sample_rate
1580     )
1581         ost->audio_resample = 1;
1582
1583     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
1584                        ost->resample_channels    != dec->channels   ||
1585                        ost->resample_sample_rate != dec->sample_rate;
1586
1587     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
1588         if (resample_changed) {
1589             av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
1590                    ist->file_index, ist->st->index,
1591                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1592                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1593             ost->resample_sample_fmt  = dec->sample_fmt;
1594             ost->resample_channels    = dec->channels;
1595             ost->resample_sample_rate = dec->sample_rate;
1596             swr_free(&ost->swr);
1597         }
1598         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1599         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
1600             ost->resample_sample_fmt  == enc->sample_fmt &&
1601             ost->resample_channels    == enc->channels   &&
1602             ost->resample_sample_rate == enc->sample_rate) {
1603             //ost->swr = NULL;
1604             ost->audio_resample = 0;
1605         } else {
1606             ost->swr = swr_alloc_set_opts(ost->swr,
1607                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
1608                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
1609                                           0, NULL);
1610             av_opt_set_int(ost->swr, "dither_method", ost->swr_dither_method,0);
1611             av_opt_set_int(ost->swr, "dither_scale", ost->swr_dither_scale,0);
1612             if (ost->audio_channels_mapped)
1613                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
1614             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
1615             if (ost->audio_channels_mapped) {
1616                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
1617                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
1618             }
1619             if (av_opt_set_int(ost->swr, "ich", dec->channels, 0) < 0) {
1620                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of input channels\n");
1621                 exit_program(1);
1622             }
1623             if (av_opt_set_int(ost->swr, "och", enc->channels, 0) < 0) {
1624                 av_log(NULL, AV_LOG_FATAL, "Unsupported number of output channels\n");
1625                 exit_program(1);
1626             }
1627             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
1628             if(ost->swr && swr_init(ost->swr) < 0){
1629                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
1630                 swr_free(&ost->swr);
1631             }
1632
1633             if (!ost->swr) {
1634                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1635                         dec->channels, dec->sample_rate,
1636                         enc->channels, enc->sample_rate);
1637                 exit_program(1);
1638             }
1639         }
1640     }
1641
1642     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1643
1644     if (audio_sync_method > 0) {
1645         double delta = get_sync_ipts(ost, ist->pts) * enc->sample_rate - ost->sync_opts -
1646                        av_fifo_size(ost->fifo) / (enc->channels * osize);
1647         int idelta = delta * dec->sample_rate / enc->sample_rate;
1648         int byte_delta = idelta * isize * dec->channels;
1649
1650         // FIXME resample delay
1651         if (fabs(delta) > 50) {
1652             if (ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate) {
1653                 if (byte_delta < 0) {
1654                     byte_delta = FFMAX(byte_delta, -size);
1655                     size += byte_delta;
1656                     for (i=0; i<planes; i++)
1657                         buf[i]  -= byte_delta/planes;
1658                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1659                            -byte_delta / (isize * dec->channels));
1660                     if (!size)
1661                         return;
1662                     ist->is_start = 0;
1663                 } else {
1664                     av_fast_malloc(&async_buf, &allocated_async_buf_size,
1665                                    byte_delta + size);
1666                     if (!async_buf) {
1667                         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1668                         exit_program(1);
1669                     }
1670
1671                     if (alloc_audio_output_buf(dec, enc, decoded_frame->nb_samples + idelta) < 0) {
1672                         av_log(NULL, AV_LOG_FATAL, "Error allocating audio buffer\n");
1673                         exit_program(1);
1674                     }
1675                     ist->is_start = 0;
1676
1677                     for (i=0; i<planes; i++) {
1678                         uint8_t *t = async_buf + i*((byte_delta + size)/planes);
1679                         generate_silence(t, dec->sample_fmt, byte_delta/planes);
1680                         memcpy(t + byte_delta/planes, buf[i], size/planes);
1681                         buf[i] = t;
1682                     }
1683                     size += byte_delta;
1684                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1685                 }
1686             } else if (audio_sync_method > 1) {
1687                 int comp = av_clip(delta, -audio_sync_method, audio_sync_method);
1688                 av_assert0(ost->audio_resample);
1689                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1690                        delta, comp, enc->sample_rate);
1691 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
1692                 swr_set_compensation(ost->swr, comp, enc->sample_rate);
1693             }
1694         }
1695     } else if (audio_sync_method == 0)
1696         ost->sync_opts = lrintf(get_sync_ipts(ost, ist->pts) * enc->sample_rate) -
1697                                 av_fifo_size(ost->fifo) / (enc->channels * osize); // FIXME wrong
1698
1699     if (ost->audio_resample || ost->audio_channels_mapped) {
1700         buftmp = audio_buf;
1701         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, allocated_audio_buf_size / (enc->channels * osize),
1702                                          buf, size / (dec->channels * isize));
1703         if (size_out < 0) {
1704             av_log(NULL, AV_LOG_FATAL, "swr_convert failed\n");
1705             exit_program(1);
1706         }
1707         size_out = size_out * enc->channels * osize;
1708     } else {
1709         buftmp = buf[0];
1710         size_out = size;
1711     }
1712
1713     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1714
1715     /* now encode as many frames as possible */
1716     if (!(enc->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1717         /* output resampled raw samples */
1718         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1719             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1720             exit_program(1);
1721         }
1722         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1723
1724         frame_bytes = enc->frame_size * osize * enc->channels;
1725
1726         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1727             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1728             encode_audio_frame(s, ost, audio_buf, frame_bytes);
1729         }
1730     } else {
1731         encode_audio_frame(s, ost, buftmp, size_out);
1732     }
1733 }
1734
1735 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1736 {
1737     AVCodecContext *dec;
1738     AVPicture *picture2;
1739     AVPicture picture_tmp;
1740     uint8_t *buf = 0;
1741
1742     dec = ist->st->codec;
1743
1744     /* deinterlace : must be done before any resize */
1745     if (do_deinterlace) {
1746         int size;
1747
1748         /* create temporary picture */
1749         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1750         buf  = av_malloc(size);
1751         if (!buf)
1752             return;
1753
1754         picture2 = &picture_tmp;
1755         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1756
1757         if (avpicture_deinterlace(picture2, picture,
1758                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1759             /* if error, do not deinterlace */
1760             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1761             av_free(buf);
1762             buf = NULL;
1763             picture2 = picture;
1764         }
1765     } else {
1766         picture2 = picture;
1767     }
1768
1769     if (picture != picture2)
1770         *picture = *picture2;
1771     *bufp = buf;
1772 }
1773
1774 static void do_subtitle_out(AVFormatContext *s,
1775                             OutputStream *ost,
1776                             InputStream *ist,
1777                             AVSubtitle *sub,
1778                             int64_t pts)
1779 {
1780     static uint8_t *subtitle_out = NULL;
1781     int subtitle_out_max_size = 1024 * 1024;
1782     int subtitle_out_size, nb, i;
1783     AVCodecContext *enc;
1784     AVPacket pkt;
1785
1786     if (pts == AV_NOPTS_VALUE) {
1787         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1788         if (exit_on_error)
1789             exit_program(1);
1790         return;
1791     }
1792
1793     enc = ost->st->codec;
1794
1795     if (!subtitle_out) {
1796         subtitle_out = av_malloc(subtitle_out_max_size);
1797     }
1798
1799     /* Note: DVB subtitle need one packet to draw them and one other
1800        packet to clear them */
1801     /* XXX: signal it in the codec context ? */
1802     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1803         nb = 2;
1804     else
1805         nb = 1;
1806
1807     for (i = 0; i < nb; i++) {
1808         ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
1809
1810         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1811         // start_display_time is required to be 0
1812         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
1813         sub->end_display_time  -= sub->start_display_time;
1814         sub->start_display_time = 0;
1815         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1816                                                     subtitle_out_max_size, sub);
1817         if (subtitle_out_size < 0) {
1818             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1819             exit_program(1);
1820         }
1821
1822         av_init_packet(&pkt);
1823         pkt.data = subtitle_out;
1824         pkt.size = subtitle_out_size;
1825         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1826         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1827             /* XXX: the pts correction is handled here. Maybe handling
1828                it in the codec would be better */
1829             if (i == 0)
1830                 pkt.pts += 90 * sub->start_display_time;
1831             else
1832                 pkt.pts += 90 * sub->end_display_time;
1833         }
1834         write_frame(s, &pkt, ost);
1835     }
1836 }
1837
1838 static double psnr(double d)
1839 {
1840     return -10.0 * log(d) / log(10.0);
1841 }
1842
1843 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1844                            int frame_size)
1845 {
1846     AVCodecContext *enc;
1847     int frame_number;
1848     double ti1, bitrate, avg_bitrate;
1849
1850     /* this is executed just the first time do_video_stats is called */
1851     if (!vstats_file) {
1852         vstats_file = fopen(vstats_filename, "w");
1853         if (!vstats_file) {
1854             perror("fopen");
1855             exit_program(1);
1856         }
1857     }
1858
1859     enc = ost->st->codec;
1860     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1861         frame_number = ost->frame_number;
1862         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1863         if (enc->flags&CODEC_FLAG_PSNR)
1864             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1865
1866         fprintf(vstats_file,"f_size= %6d ", frame_size);
1867         /* compute pts value */
1868         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1869         if (ti1 < 0.01)
1870             ti1 = 0.01;
1871
1872         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1873         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1874         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1875                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1876         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1877     }
1878 }
1879
1880
1881 static void do_video_out(AVFormatContext *s, OutputStream *ost,
1882                          AVFrame *in_picture, float quality)
1883 {
1884     int nb_frames, i, ret, format_video_sync;
1885     AVCodecContext *enc;
1886     double sync_ipts, delta;
1887     double duration = 0;
1888     int frame_size = 0;
1889     InputStream *ist = NULL;
1890
1891     if (ost->source_index >= 0)
1892         ist = input_streams[ost->source_index];
1893
1894     enc = ost->st->codec;
1895
1896     if (ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1897         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1898         if(ist->st->r_frame_rate.num)
1899             duration= FFMAX(duration, 1/av_q2d(ist->st->r_frame_rate));
1900         if(ist->st->avg_frame_rate.num && 0)
1901             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1902
1903         duration /= av_q2d(enc->time_base);
1904     }
1905
1906     sync_ipts = get_sync_ipts(ost, in_picture->pts) / av_q2d(enc->time_base);
1907     delta = sync_ipts - ost->sync_opts + duration;
1908
1909     /* by default, we output a single frame */
1910     nb_frames = 1;
1911
1912     format_video_sync = video_sync_method;
1913     if (format_video_sync == VSYNC_AUTO)
1914         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
1915
1916     switch (format_video_sync) {
1917     case VSYNC_CFR:
1918         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1919         if (delta < -1.1)
1920             nb_frames = 0;
1921         else if (delta > 1.1)
1922             nb_frames = lrintf(delta);
1923         break;
1924     case VSYNC_VFR:
1925         if (delta <= -0.6)
1926             nb_frames = 0;
1927         else if (delta > 0.6)
1928             ost->sync_opts = lrintf(sync_ipts);
1929         break;
1930     case VSYNC_DROP:
1931     case VSYNC_PASSTHROUGH:
1932         ost->sync_opts = lrintf(sync_ipts);
1933         break;
1934     default:
1935         av_assert0(0);
1936     }
1937
1938     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1939     if (nb_frames == 0) {
1940         nb_frames_drop++;
1941         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1942         return;
1943     } else if (nb_frames > 1) {
1944         nb_frames_dup += nb_frames - 1;
1945         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1946     }
1947
1948     /* duplicates frame if needed */
1949     for (i = 0; i < nb_frames; i++) {
1950         AVPacket pkt;
1951         av_init_packet(&pkt);
1952         pkt.data = NULL;
1953         pkt.size = 0;
1954
1955         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1956             enc->codec->id == CODEC_ID_RAWVIDEO) {
1957             /* raw pictures are written as AVPicture structure to
1958                avoid any copies. We support temporarily the older
1959                method. */
1960             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1961             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1962             pkt.data   = (uint8_t *)in_picture;
1963             pkt.size   =  sizeof(AVPicture);
1964             pkt.pts    = av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1965             pkt.flags |= AV_PKT_FLAG_KEY;
1966
1967             write_frame(s, &pkt, ost);
1968         } else {
1969             int got_packet;
1970             AVFrame big_picture;
1971
1972             big_picture = *in_picture;
1973             /* better than nothing: use input picture interlaced
1974                settings */
1975             big_picture.interlaced_frame = in_picture->interlaced_frame;
1976             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1977                 if (ost->top_field_first == -1)
1978                     big_picture.top_field_first = in_picture->top_field_first;
1979                 else
1980                     big_picture.top_field_first = !!ost->top_field_first;
1981             }
1982
1983             /* handles same_quant here. This is not correct because it may
1984                not be a global option */
1985             big_picture.quality = quality;
1986             if (!enc->me_threshold)
1987                 big_picture.pict_type = 0;
1988             big_picture.pts = ost->sync_opts;
1989             if (ost->forced_kf_index < ost->forced_kf_count &&
1990                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1991                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1992                 ost->forced_kf_index++;
1993             }
1994             update_benchmark(NULL);
1995             ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
1996             update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1997             if (ret < 0) {
1998                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1999                 exit_program(1);
2000             }
2001
2002             if (got_packet) {
2003                 if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
2004                     pkt.pts = ost->sync_opts;
2005
2006                 if (pkt.pts != AV_NOPTS_VALUE)
2007                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2008                 if (pkt.dts != AV_NOPTS_VALUE)
2009                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2010
2011                 if (debug_ts) {
2012                     av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
2013                            "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
2014                            av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
2015                            av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
2016                 }
2017
2018                 write_frame(s, &pkt, ost);
2019                 frame_size = pkt.size;
2020                 video_size += pkt.size;
2021                 av_free_packet(&pkt);
2022
2023                 /* if two pass, output log */
2024                 if (ost->logfile && enc->stats_out) {
2025                     fprintf(ost->logfile, "%s", enc->stats_out);
2026                 }
2027             }
2028         }
2029         ost->sync_opts++;
2030         /*
2031          * For video, number of frames in == number of packets out.
2032          * But there may be reordering, so we can't throw away frames on encoder
2033          * flush, we need to limit them here, before they go into encoder.
2034          */
2035         ost->frame_number++;
2036     }
2037     if (vstats_filename && frame_size)
2038         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
2039 }
2040
2041 /* check for new output on any of the filtergraphs */
2042 static int poll_filters(void)
2043 {
2044     AVFilterBufferRef *picref;
2045     AVFrame *filtered_frame = NULL;
2046     int i, ret;
2047
2048     for (i = 0; i < nb_output_streams; i++) {
2049         OutputStream *ost = output_streams[i];
2050         OutputFile    *of = output_files[ost->file_index];
2051
2052         if (!ost->filter || ost->is_past_recording_time)
2053             continue;
2054
2055         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
2056             return AVERROR(ENOMEM);
2057         } else
2058             avcodec_get_frame_defaults(ost->filtered_frame);
2059         filtered_frame = ost->filtered_frame;
2060
2061         while (avfilter_poll_frame(ost->filter->filter->inputs[0])) {
2062             AVRational ist_pts_tb = ost->filter->filter->inputs[0]->time_base;
2063             if ((ret = av_buffersink_get_buffer_ref(ost->filter->filter,
2064                                                             &picref,
2065                                                             0)) < 0) {
2066                 av_log(NULL, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
2067                 return ret;
2068             }
2069             filtered_frame->pts = av_rescale_q(picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2070 //             if (ost->source_index >= 0)
2071 //                 *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
2072
2073             if (of->start_time && filtered_frame->pts < of->start_time)
2074                 return 0;
2075
2076             switch (ost->filter->filter->inputs[0]->type) {
2077             case AVMEDIA_TYPE_VIDEO:
2078                 avfilter_fill_frame_from_video_buffer_ref(filtered_frame, picref);
2079                 if (!ost->frame_aspect_ratio)
2080                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
2081
2082                 do_video_out(of->ctx, ost, filtered_frame,
2083                              same_quant ? ost->last_quality :
2084                                           ost->st->codec->global_quality);
2085                 break;
2086             default:
2087                 // TODO support audio/subtitle filters
2088                 av_assert0(0);
2089             }
2090
2091             avfilter_unref_buffer(picref);
2092         }
2093     }
2094     return 0;
2095 }
2096
2097 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
2098 {
2099     char buf[1024];
2100     OutputStream *ost;
2101     AVFormatContext *oc;
2102     int64_t total_size;
2103     AVCodecContext *enc;
2104     int frame_number, vid, i;
2105     double bitrate;
2106     int64_t pts = INT64_MAX;
2107     static int64_t last_time = -1;
2108     static int qp_histogram[52];
2109     int hours, mins, secs, us;
2110
2111     if (!print_stats && !is_last_report)
2112         return;
2113
2114     if (!is_last_report) {
2115         if (last_time == -1) {
2116             last_time = cur_time;
2117             return;
2118         }
2119         if ((cur_time - last_time) < 500000)
2120             return;
2121         last_time = cur_time;
2122     }
2123
2124
2125     oc = output_files[0]->ctx;
2126
2127     total_size = avio_size(oc->pb);
2128     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
2129         total_size = avio_tell(oc->pb);
2130         if (total_size < 0)
2131             total_size = 0;
2132     }
2133
2134     buf[0] = '\0';
2135     vid = 0;
2136     for (i = 0; i < nb_output_streams; i++) {
2137         float q = -1;
2138         ost = output_streams[i];
2139         enc = ost->st->codec;
2140         if (!ost->stream_copy && enc->coded_frame)
2141             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
2142         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2143             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
2144         }
2145         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
2146             float fps, t = (cur_time-timer_start) / 1000000.0;
2147
2148             frame_number = ost->frame_number;
2149             fps = t > 1 ? frame_number / t : 0;
2150             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
2151                      frame_number, fps < 9.95, fps, q);
2152             if (is_last_report)
2153                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
2154             if (qp_hist) {
2155                 int j;
2156                 int qp = lrintf(q);
2157                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
2158                     qp_histogram[qp]++;
2159                 for (j = 0; j < 32; j++)
2160                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
2161             }
2162             if (enc->flags&CODEC_FLAG_PSNR) {
2163                 int j;
2164                 double error, error_sum = 0;
2165                 double scale, scale_sum = 0;
2166                 char type[3] = { 'Y','U','V' };
2167                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
2168                 for (j = 0; j < 3; j++) {
2169                     if (is_last_report) {
2170                         error = enc->error[j];
2171                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
2172                     } else {
2173                         error = enc->coded_frame->error[j];
2174                         scale = enc->width * enc->height * 255.0 * 255.0;
2175                     }
2176                     if (j)
2177                         scale /= 4;
2178                     error_sum += error;
2179                     scale_sum += scale;
2180                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
2181                 }
2182                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
2183             }
2184             vid = 1;
2185         }
2186         /* compute min output value */
2187         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
2188                                       ost->st->time_base, AV_TIME_BASE_Q));
2189     }
2190
2191     secs = pts / AV_TIME_BASE;
2192     us = pts % AV_TIME_BASE;
2193     mins = secs / 60;
2194     secs %= 60;
2195     hours = mins / 60;
2196     mins %= 60;
2197
2198     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
2199
2200     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2201              "size=%8.0fkB time=", total_size / 1024.0);
2202     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2203              "%02d:%02d:%02d.%02d ", hours, mins, secs,
2204              (100 * us) / AV_TIME_BASE);
2205     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
2206              "bitrate=%6.1fkbits/s", bitrate);
2207
2208     if (nb_frames_dup || nb_frames_drop)
2209         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
2210                 nb_frames_dup, nb_frames_drop);
2211
2212     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
2213
2214     fflush(stderr);
2215
2216     if (is_last_report) {
2217         int64_t raw= audio_size + video_size + extra_size;
2218         av_log(NULL, AV_LOG_INFO, "\n");
2219         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
2220                video_size / 1024.0,
2221                audio_size / 1024.0,
2222                extra_size / 1024.0,
2223                100.0 * (total_size - raw) / raw
2224         );
2225         if(video_size + audio_size + extra_size == 0){
2226             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
2227         }
2228     }
2229 }
2230
2231 static void flush_encoders(void)
2232 {
2233     int i, ret;
2234
2235     for (i = 0; i < nb_output_streams; i++) {
2236         OutputStream   *ost = output_streams[i];
2237         AVCodecContext *enc = ost->st->codec;
2238         AVFormatContext *os = output_files[ost->file_index]->ctx;
2239         int stop_encoding = 0;
2240
2241         if (!ost->encoding_needed)
2242             continue;
2243
2244         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
2245             continue;
2246         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
2247             continue;
2248
2249         for (;;) {
2250             AVPacket pkt;
2251             int fifo_bytes, got_packet;
2252             av_init_packet(&pkt);
2253             pkt.data = NULL;
2254             pkt.size = 0;
2255
2256             switch (ost->st->codec->codec_type) {
2257             case AVMEDIA_TYPE_AUDIO:
2258                 fifo_bytes = av_fifo_size(ost->fifo);
2259                 if (fifo_bytes > 0) {
2260                     /* encode any samples remaining in fifo */
2261                     int frame_bytes = fifo_bytes;
2262
2263                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
2264
2265                     /* pad last frame with silence if needed */
2266                     if (!(enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME)) {
2267                         frame_bytes = enc->frame_size * enc->channels *
2268                                       av_get_bytes_per_sample(enc->sample_fmt);
2269                         if (allocated_audio_buf_size < frame_bytes)
2270                             exit_program(1);
2271                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
2272                     }
2273                     encode_audio_frame(os, ost, audio_buf, frame_bytes);
2274                 } else {
2275                     /* flush encoder with NULL frames until it is done
2276                        returning packets */
2277                     if (encode_audio_frame(os, ost, NULL, 0) == 0) {
2278                         stop_encoding = 1;
2279                         break;
2280                     }
2281                 }
2282                 break;
2283             case AVMEDIA_TYPE_VIDEO:
2284                 update_benchmark(NULL);
2285                 ret = avcodec_encode_video2(enc, &pkt, NULL, &got_packet);
2286                 update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
2287                 if (ret < 0) {
2288                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
2289                     exit_program(1);
2290                 }
2291                 video_size += pkt.size;
2292                 if (ost->logfile && enc->stats_out) {
2293                     fprintf(ost->logfile, "%s", enc->stats_out);
2294                 }
2295                 if (!got_packet) {
2296                     stop_encoding = 1;
2297                     break;
2298                 }
2299                 if (pkt.pts != AV_NOPTS_VALUE)
2300                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
2301                 if (pkt.dts != AV_NOPTS_VALUE)
2302                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
2303                 write_frame(os, &pkt, ost);
2304                 break;
2305             default:
2306                 stop_encoding = 1;
2307             }
2308             if (stop_encoding)
2309                 break;
2310         }
2311     }
2312 }
2313
2314 /*
2315  * Check whether a packet from ist should be written into ost at this time
2316  */
2317 static int check_output_constraints(InputStream *ist, OutputStream *ost)
2318 {
2319     OutputFile *of = output_files[ost->file_index];
2320     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
2321
2322     if (ost->source_index != ist_index)
2323         return 0;
2324
2325     if (of->start_time && ist->pts < of->start_time)
2326         return 0;
2327
2328     if (of->recording_time != INT64_MAX &&
2329         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
2330                       (AVRational){ 1, 1000000 }) >= 0) {
2331         ost->is_past_recording_time = 1;
2332         return 0;
2333     }
2334
2335     return 1;
2336 }
2337
2338 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
2339 {
2340     OutputFile *of = output_files[ost->file_index];
2341     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
2342     AVPicture pict;
2343     AVPacket opkt;
2344
2345     av_init_packet(&opkt);
2346
2347     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
2348         !ost->copy_initial_nonkeyframes)
2349         return;
2350
2351     /* force the input stream PTS */
2352     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
2353         audio_size += pkt->size;
2354     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2355         video_size += pkt->size;
2356         ost->sync_opts++;
2357     }
2358
2359     if (pkt->pts != AV_NOPTS_VALUE)
2360         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
2361     else
2362         opkt.pts = AV_NOPTS_VALUE;
2363
2364     if (pkt->dts == AV_NOPTS_VALUE)
2365         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
2366     else
2367         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
2368     opkt.dts -= ost_tb_start_time;
2369
2370     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
2371     opkt.flags    = pkt->flags;
2372
2373     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
2374     if (  ost->st->codec->codec_id != CODEC_ID_H264
2375        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
2376        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
2377        && ost->st->codec->codec_id != CODEC_ID_VC1
2378        ) {
2379         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
2380             opkt.destruct = av_destruct_packet;
2381     } else {
2382         opkt.data = pkt->data;
2383         opkt.size = pkt->size;
2384     }
2385     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
2386         /* store AVPicture in AVPacket, as expected by the output format */
2387         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
2388         opkt.data = (uint8_t *)&pict;
2389         opkt.size = sizeof(AVPicture);
2390         opkt.flags |= AV_PKT_FLAG_KEY;
2391     }
2392
2393     write_frame(of->ctx, &opkt, ost);
2394     ost->st->codec->frame_number++;
2395     av_free_packet(&opkt);
2396 }
2397
2398 static void rate_emu_sleep(InputStream *ist)
2399 {
2400     if (input_files[ist->file_index]->rate_emu) {
2401         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2402         int64_t now = av_gettime() - ist->start;
2403         if (pts > now)
2404             usleep(pts - now);
2405     }
2406 }
2407
2408 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
2409 {
2410     AVFrame *decoded_frame;
2411     AVCodecContext *avctx = ist->st->codec;
2412     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
2413     int i, ret;
2414
2415     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2416         return AVERROR(ENOMEM);
2417     else
2418         avcodec_get_frame_defaults(ist->decoded_frame);
2419     decoded_frame = ist->decoded_frame;
2420
2421     update_benchmark(NULL);
2422     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
2423     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
2424     if (ret < 0) {
2425         return ret;
2426     }
2427     if (avctx->sample_rate <= 0) {
2428         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
2429         return AVERROR_INVALIDDATA;
2430     }
2431
2432     if (!*got_output) {
2433         /* no audio frame */
2434         return ret;
2435     }
2436
2437     /* if the decoder provides a pts, use it instead of the last packet pts.
2438        the decoder could be delaying output by a packet or more. */
2439     if (decoded_frame->pts != AV_NOPTS_VALUE)
2440         ist->dts = ist->next_dts = ist->pts = ist->next_pts = decoded_frame->pts;
2441
2442     /* increment next_dts to use for the case where the input stream does not
2443        have timestamps or there are multiple frames in the packet */
2444     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2445                      avctx->sample_rate;
2446     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
2447                      avctx->sample_rate;
2448
2449
2450     // preprocess audio (volume)
2451     if (audio_volume != 256) {
2452         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
2453         void *samples = decoded_frame->data[0];
2454         switch (avctx->sample_fmt) {
2455         case AV_SAMPLE_FMT_U8:
2456         {
2457             uint8_t *volp = samples;
2458             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2459                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
2460                 *volp++ = av_clip_uint8(v);
2461             }
2462             break;
2463         }
2464         case AV_SAMPLE_FMT_S16:
2465         {
2466             int16_t *volp = samples;
2467             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2468                 int v = ((*volp) * audio_volume + 128) >> 8;
2469                 *volp++ = av_clip_int16(v);
2470             }
2471             break;
2472         }
2473         case AV_SAMPLE_FMT_S32:
2474         {
2475             int32_t *volp = samples;
2476             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2477                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
2478                 *volp++ = av_clipl_int32(v);
2479             }
2480             break;
2481         }
2482         case AV_SAMPLE_FMT_FLT:
2483         {
2484             float *volp = samples;
2485             float scale = audio_volume / 256.f;
2486             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2487                 *volp++ *= scale;
2488             }
2489             break;
2490         }
2491         case AV_SAMPLE_FMT_DBL:
2492         {
2493             double *volp = samples;
2494             double scale = audio_volume / 256.;
2495             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
2496                 *volp++ *= scale;
2497             }
2498             break;
2499         }
2500         default:
2501             av_log(NULL, AV_LOG_FATAL,
2502                    "Audio volume adjustment on sample format %s is not supported.\n",
2503                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
2504             exit_program(1);
2505         }
2506     }
2507
2508     rate_emu_sleep(ist);
2509
2510     for (i = 0; i < nb_output_streams; i++) {
2511         OutputStream *ost = output_streams[i];
2512
2513         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2514             continue;
2515         do_audio_out(output_files[ost->file_index]->ctx, ost, ist, decoded_frame);
2516     }
2517
2518     return ret;
2519 }
2520
2521 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
2522 {
2523     AVFrame *decoded_frame;
2524     void *buffer_to_free = NULL;
2525     int i, ret = 0, resample_changed;
2526     int64_t *best_effort_timestamp;
2527     AVRational *frame_sample_aspect;
2528     float quality;
2529
2530     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2531         return AVERROR(ENOMEM);
2532     else
2533         avcodec_get_frame_defaults(ist->decoded_frame);
2534     decoded_frame = ist->decoded_frame;
2535     pkt->pts  = *pkt_pts;
2536     pkt->dts  = ist->dts;
2537     *pkt_pts  = AV_NOPTS_VALUE;
2538
2539     update_benchmark(NULL);
2540     ret = avcodec_decode_video2(ist->st->codec,
2541                                 decoded_frame, got_output, pkt);
2542     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
2543     if (ret < 0)
2544         return ret;
2545
2546     quality = same_quant ? decoded_frame->quality : 0;
2547     if (!*got_output) {
2548         /* no picture yet */
2549         if (!pkt->size)
2550             for (i = 0; i < ist->nb_filters; i++)
2551                 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
2552         return ret;
2553     }
2554
2555     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
2556     if(*best_effort_timestamp != AV_NOPTS_VALUE)
2557         ist->next_pts = ist->pts = decoded_frame->pts = *best_effort_timestamp;
2558
2559     pkt->size = 0;
2560
2561     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2562
2563     rate_emu_sleep(ist);
2564
2565     if (ist->st->sample_aspect_ratio.num)
2566         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2567
2568     resample_changed = ist->resample_width   != decoded_frame->width  ||
2569                        ist->resample_height  != decoded_frame->height ||
2570                        ist->resample_pix_fmt != decoded_frame->format;
2571     if (resample_changed) {
2572         av_log(NULL, AV_LOG_INFO,
2573                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2574                ist->file_index, ist->st->index,
2575                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2576                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2577
2578         ist->resample_width   = decoded_frame->width;
2579         ist->resample_height  = decoded_frame->height;
2580         ist->resample_pix_fmt = decoded_frame->format;
2581
2582         for (i = 0; i < nb_filtergraphs; i++)
2583             if (ist_in_filtergraph(filtergraphs[i], ist) &&
2584                 configure_filtergraph(filtergraphs[i]) < 0) {
2585                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2586                 exit_program(1);
2587             }
2588     }
2589
2590     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2591     for (i = 0; i < ist->nb_filters; i++) {
2592         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
2593                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
2594                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
2595         // XXX what an ugly hack
2596         if (ist->filters[i]->graph->nb_outputs == 1)
2597             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
2598
2599         if (!frame_sample_aspect->num)
2600             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2601         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
2602             FrameBuffer      *buf = decoded_frame->opaque;
2603             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2604                                         decoded_frame->data, decoded_frame->linesize,
2605                                         AV_PERM_READ | AV_PERM_PRESERVE,
2606                                         ist->st->codec->width, ist->st->codec->height,
2607                                         ist->st->codec->pix_fmt);
2608
2609             avfilter_copy_frame_props(fb, decoded_frame);
2610             fb->buf->priv           = buf;
2611             fb->buf->free           = filter_release_buffer;
2612
2613             buf->refcount++;
2614             av_buffersrc_buffer(ist->filters[i]->filter, fb);
2615         } else
2616         if(av_vsrc_buffer_add_frame(ist->filters[i]->filter, decoded_frame,AV_VSRC_BUF_FLAG_OVERWRITE)<0) {
2617             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2618             exit_program(1);
2619         }
2620
2621     }
2622
2623     av_free(buffer_to_free);
2624     return ret;
2625 }
2626
2627 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2628 {
2629     AVSubtitle subtitle;
2630     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2631                                           &subtitle, got_output, pkt);
2632     if (ret < 0)
2633         return ret;
2634     if (!*got_output)
2635         return ret;
2636
2637     rate_emu_sleep(ist);
2638
2639     for (i = 0; i < nb_output_streams; i++) {
2640         OutputStream *ost = output_streams[i];
2641
2642         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2643             continue;
2644
2645         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
2646     }
2647
2648     avsubtitle_free(&subtitle);
2649     return ret;
2650 }
2651
2652 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2653 static int output_packet(InputStream *ist, const AVPacket *pkt)
2654 {
2655     int ret = 0, i;
2656     int got_output;
2657     int64_t pkt_pts = AV_NOPTS_VALUE;
2658
2659     AVPacket avpkt;
2660
2661     if (ist->next_dts == AV_NOPTS_VALUE)
2662         ist->next_dts = ist->dts;
2663     if (ist->next_pts == AV_NOPTS_VALUE)
2664         ist->next_pts = ist->pts;
2665
2666     if (pkt == NULL) {
2667         /* EOF handling */
2668         av_init_packet(&avpkt);
2669         avpkt.data = NULL;
2670         avpkt.size = 0;
2671         goto handle_eof;
2672     } else {
2673         avpkt = *pkt;
2674     }
2675
2676     if (pkt->dts != AV_NOPTS_VALUE) {
2677         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2678         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2679             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2680     }
2681     if(pkt->pts != AV_NOPTS_VALUE)
2682         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2683
2684     // while we have more to decode or while the decoder did output something on EOF
2685     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2686         int duration;
2687     handle_eof:
2688
2689         ist->pts = ist->next_pts;
2690         ist->dts = ist->next_dts;
2691
2692         if (avpkt.size && avpkt.size != pkt->size) {
2693             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2694                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2695             ist->showed_multi_packet_warning = 1;
2696         }
2697
2698         switch (ist->st->codec->codec_type) {
2699         case AVMEDIA_TYPE_AUDIO:
2700             ret = transcode_audio    (ist, &avpkt, &got_output);
2701             break;
2702         case AVMEDIA_TYPE_VIDEO:
2703             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2704             if (avpkt.duration) {
2705                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2706             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2707                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2708                 duration = ((int64_t)AV_TIME_BASE *
2709                                 ist->st->codec->time_base.num * ticks) /
2710                                 ist->st->codec->time_base.den;
2711             } else
2712                 duration = 0;
2713
2714             if(ist->dts != AV_NOPTS_VALUE && duration) {
2715                 ist->next_dts += duration;
2716             }else
2717                 ist->next_dts = AV_NOPTS_VALUE;
2718
2719             if (got_output)
2720                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2721             break;
2722         case AVMEDIA_TYPE_SUBTITLE:
2723             ret = transcode_subtitles(ist, &avpkt, &got_output);
2724             break;
2725         default:
2726             return -1;
2727         }
2728
2729         if (ret < 0)
2730             return ret;
2731
2732         avpkt.dts=
2733         avpkt.pts= AV_NOPTS_VALUE;
2734
2735         // touch data and size only if not EOF
2736         if (pkt) {
2737             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2738                 ret = avpkt.size;
2739             avpkt.data += ret;
2740             avpkt.size -= ret;
2741         }
2742         if (!got_output) {
2743             continue;
2744         }
2745     }
2746
2747     /* handle stream copy */
2748     if (!ist->decoding_needed) {
2749         rate_emu_sleep(ist);
2750         ist->dts = ist->next_dts;
2751         switch (ist->st->codec->codec_type) {
2752         case AVMEDIA_TYPE_AUDIO:
2753             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2754                              ist->st->codec->sample_rate;
2755             break;
2756         case AVMEDIA_TYPE_VIDEO:
2757             if (pkt->duration) {
2758                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2759             } else if(ist->st->codec->time_base.num != 0) {
2760                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2761                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2762                                   ist->st->codec->time_base.num * ticks) /
2763                                   ist->st->codec->time_base.den;
2764             }
2765             break;
2766         }
2767         ist->pts = ist->dts;
2768         ist->next_pts = ist->next_dts;
2769     }
2770     for (i = 0; pkt && i < nb_output_streams; i++) {
2771         OutputStream *ost = output_streams[i];
2772
2773         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2774             continue;
2775
2776         do_streamcopy(ist, ost, pkt);
2777     }
2778
2779     return 0;
2780 }
2781
2782 static void print_sdp(void)
2783 {
2784     char sdp[2048];
2785     int i;
2786     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2787
2788     if (!avc)
2789         exit_program(1);
2790     for (i = 0; i < nb_output_files; i++)
2791         avc[i] = output_files[i]->ctx;
2792
2793     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2794     printf("SDP:\n%s\n", sdp);
2795     fflush(stdout);
2796     av_freep(&avc);
2797 }
2798
2799 static int init_input_stream(int ist_index, char *error, int error_len)
2800 {
2801     int i;
2802     InputStream *ist = input_streams[ist_index];
2803
2804     if (ist->decoding_needed) {
2805         AVCodec *codec = ist->dec;
2806         if (!codec) {
2807             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2808                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2809             return AVERROR(EINVAL);
2810         }
2811
2812         ist->dr1 = codec->capabilities & CODEC_CAP_DR1;
2813         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2814             ist->st->codec->get_buffer     = codec_get_buffer;
2815             ist->st->codec->release_buffer = codec_release_buffer;
2816             ist->st->codec->opaque         = ist;
2817         }
2818
2819         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2820             av_dict_set(&ist->opts, "threads", "auto", 0);
2821         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2822             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2823                     ist->file_index, ist->st->index);
2824             return AVERROR(EINVAL);
2825         }
2826         assert_codec_experimental(ist->st->codec, 0);
2827         assert_avoptions(ist->opts);
2828
2829         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2830             for (i = 0; i < nb_output_streams; i++) {
2831                 OutputStream *ost = output_streams[i];
2832                 if (ost->source_index == ist_index) {
2833                     if (!ist->st->codec->channel_layout || !ost->st->codec->channel_layout)
2834                         get_default_channel_layouts(ost, ist);
2835                     break;
2836                 }
2837             }
2838         }
2839     }
2840
2841     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;
2842     ist->next_pts = AV_NOPTS_VALUE;
2843     ist->next_dts = AV_NOPTS_VALUE;
2844     ist->is_start = 1;
2845
2846     return 0;
2847 }
2848
2849 static InputStream *get_input_stream(OutputStream *ost)
2850 {
2851     if (ost->source_index >= 0)
2852         return input_streams[ost->source_index];
2853
2854     if (ost->filter) {
2855         FilterGraph *fg = ost->filter->graph;
2856         int i;
2857
2858         for (i = 0; i < fg->nb_inputs; i++)
2859             if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
2860                 return fg->inputs[i]->ist;
2861     }
2862
2863     return NULL;
2864 }
2865
2866 static int transcode_init(void)
2867 {
2868     int ret = 0, i, j, k;
2869     AVFormatContext *oc;
2870     AVCodecContext *codec, *icodec;
2871     OutputStream *ost;
2872     InputStream *ist;
2873     char error[1024];
2874     int want_sdp = 1;
2875
2876     /* init framerate emulation */
2877     for (i = 0; i < nb_input_files; i++) {
2878         InputFile *ifile = input_files[i];
2879         if (ifile->rate_emu)
2880             for (j = 0; j < ifile->nb_streams; j++)
2881                 input_streams[j + ifile->ist_index]->start = av_gettime();
2882     }
2883
2884     /* output stream init */
2885     for (i = 0; i < nb_output_files; i++) {
2886         oc = output_files[i]->ctx;
2887         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2888             av_dump_format(oc, i, oc->filename, 1);
2889             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2890             return AVERROR(EINVAL);
2891         }
2892     }
2893
2894     /* init complex filtergraphs */
2895     for (i = 0; i < nb_filtergraphs; i++)
2896         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2897             return ret;
2898
2899     /* for each output stream, we compute the right encoding parameters */
2900     for (i = 0; i < nb_output_streams; i++) {
2901         ost = output_streams[i];
2902         oc  = output_files[ost->file_index]->ctx;
2903         ist = get_input_stream(ost);
2904
2905         if (ost->attachment_filename)
2906             continue;
2907
2908         codec  = ost->st->codec;
2909
2910         if (ist) {
2911             icodec = ist->st->codec;
2912
2913             ost->st->disposition          = ist->st->disposition;
2914             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2915             codec->chroma_sample_location = icodec->chroma_sample_location;
2916         }
2917
2918         if (ost->stream_copy) {
2919             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2920
2921             if (extra_size > INT_MAX) {
2922                 return AVERROR(EINVAL);
2923             }
2924
2925             /* if stream_copy is selected, no need to decode or encode */
2926             codec->codec_id   = icodec->codec_id;
2927             codec->codec_type = icodec->codec_type;
2928
2929             if (!codec->codec_tag) {
2930                 if (!oc->oformat->codec_tag ||
2931                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2932                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2933                     codec->codec_tag = icodec->codec_tag;
2934             }
2935
2936             codec->bit_rate       = icodec->bit_rate;
2937             codec->rc_max_rate    = icodec->rc_max_rate;
2938             codec->rc_buffer_size = icodec->rc_buffer_size;
2939             codec->field_order    = icodec->field_order;
2940             codec->extradata      = av_mallocz(extra_size);
2941             if (!codec->extradata) {
2942                 return AVERROR(ENOMEM);
2943             }
2944             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2945             codec->extradata_size= icodec->extradata_size;
2946
2947             codec->time_base = ist->st->time_base;
2948             /*
2949              * Avi is a special case here because it supports variable fps but
2950              * having the fps and timebase differe significantly adds quite some
2951              * overhead
2952              */
2953             if(!strcmp(oc->oformat->name, "avi")) {
2954                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2955                                  && av_q2d(ist->st->time_base) < 1.0/500
2956                     || copy_tb==0){
2957                     codec->time_base = icodec->time_base;
2958                     codec->time_base.num *= icodec->ticks_per_frame;
2959                     codec->time_base.den *= 2;
2960                     codec->ticks_per_frame = 2;
2961                 }
2962             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2963                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2964                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2965             ) {
2966                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2967                                 && av_q2d(ist->st->time_base) < 1.0/500
2968                    || copy_tb==0){
2969                     codec->time_base = icodec->time_base;
2970                     codec->time_base.num *= icodec->ticks_per_frame;
2971                 }
2972             }
2973             av_reduce(&codec->time_base.num, &codec->time_base.den,
2974                         codec->time_base.num, codec->time_base.den, INT_MAX);
2975
2976             switch (codec->codec_type) {
2977             case AVMEDIA_TYPE_AUDIO:
2978                 if (audio_volume != 256) {
2979                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2980                     exit_program(1);
2981                 }
2982                 codec->channel_layout     = icodec->channel_layout;
2983                 codec->sample_rate        = icodec->sample_rate;
2984                 codec->channels           = icodec->channels;
2985                 codec->frame_size         = icodec->frame_size;
2986                 codec->audio_service_type = icodec->audio_service_type;
2987                 codec->block_align        = icodec->block_align;
2988                 break;
2989             case AVMEDIA_TYPE_VIDEO:
2990                 codec->pix_fmt            = icodec->pix_fmt;
2991                 codec->width              = icodec->width;
2992                 codec->height             = icodec->height;
2993                 codec->has_b_frames       = icodec->has_b_frames;
2994                 if (!codec->sample_aspect_ratio.num) {
2995                     codec->sample_aspect_ratio   =
2996                     ost->st->sample_aspect_ratio =
2997                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2998                         ist->st->codec->sample_aspect_ratio.num ?
2999                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
3000                 }
3001                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
3002                 break;
3003             case AVMEDIA_TYPE_SUBTITLE:
3004                 codec->width  = icodec->width;
3005                 codec->height = icodec->height;
3006                 break;
3007             case AVMEDIA_TYPE_DATA:
3008             case AVMEDIA_TYPE_ATTACHMENT:
3009                 break;
3010             default:
3011                 abort();
3012             }
3013         } else {
3014             if (!ost->enc)
3015                 ost->enc = avcodec_find_encoder(codec->codec_id);
3016             if (!ost->enc) {
3017                 /* should only happen when a default codec is not present. */
3018                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
3019                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
3020                 ret = AVERROR(EINVAL);
3021                 goto dump_format;
3022             }
3023
3024             if (ist)
3025                 ist->decoding_needed = 1;
3026             ost->encoding_needed = 1;
3027
3028             switch (codec->codec_type) {
3029             case AVMEDIA_TYPE_AUDIO:
3030                 ost->fifo = av_fifo_alloc(1024);
3031                 if (!ost->fifo) {
3032                     return AVERROR(ENOMEM);
3033                 }
3034                 if (!codec->sample_rate)
3035                     codec->sample_rate = icodec->sample_rate;
3036                 choose_sample_rate(ost->st, ost->enc);
3037                 codec->time_base = (AVRational){ 1, codec->sample_rate };
3038
3039                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
3040                     codec->sample_fmt = icodec->sample_fmt;
3041                 choose_sample_fmt(ost->st, ost->enc);
3042
3043                 if (ost->audio_channels_mapped) {
3044                     /* the requested output channel is set to the number of
3045                      * -map_channel only if no -ac are specified */
3046                     if (!codec->channels) {
3047                         codec->channels       = ost->audio_channels_mapped;
3048                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
3049                         if (!codec->channel_layout) {
3050                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
3051                             exit_program(1);
3052                         }
3053                     }
3054                     /* fill unused channel mapping with -1 (which means a muted
3055                      * channel in case the number of output channels is bigger
3056                      * than the number of mapped channel) */
3057                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
3058                         ost->audio_channels_map[j] = -1;
3059                 } else if (!codec->channels) {
3060                     codec->channels = icodec->channels;
3061                     codec->channel_layout = icodec->channel_layout;
3062                 }
3063                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
3064                     codec->channel_layout = 0;
3065
3066                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
3067                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
3068                                             || codec->channel_layout != icodec->channel_layout;
3069                 icodec->request_channels  = codec->channels;
3070                 ost->resample_sample_fmt  = icodec->sample_fmt;
3071                 ost->resample_sample_rate = icodec->sample_rate;
3072                 ost->resample_channels    = icodec->channels;
3073                 break;
3074             case AVMEDIA_TYPE_VIDEO:
3075                 if (!ost->filter) {
3076                     FilterGraph *fg;
3077                     fg = init_simple_filtergraph(ist, ost);
3078                     if (configure_video_filters(fg)) {
3079                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
3080                         exit(1);
3081                     }
3082                 }
3083
3084                 if (ist && !ost->frame_rate.num)
3085                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational) { 25, 1 };
3086                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
3087                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
3088                     ost->frame_rate = ost->enc->supported_framerates[idx];
3089                 }
3090                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
3091                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
3092                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
3093                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
3094                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
3095                 }
3096                 for (j = 0; j < ost->forced_kf_count; j++)
3097                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
3098                                                          AV_TIME_BASE_Q,
3099                                                          codec->time_base);
3100
3101                 codec->width  = ost->filter->filter->inputs[0]->w;
3102                 codec->height = ost->filter->filter->inputs[0]->h;
3103                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
3104                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
3105                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
3106                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
3107                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
3108
3109                 if (codec->width   != icodec->width  ||
3110                     codec->height  != icodec->height ||
3111                     codec->pix_fmt != icodec->pix_fmt) {
3112                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
3113                 }
3114
3115                 break;
3116             case AVMEDIA_TYPE_SUBTITLE:
3117                 codec->time_base = (AVRational){1, 1000};
3118                 break;
3119             default:
3120                 abort();
3121                 break;
3122             }
3123             /* two pass mode */
3124             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3125                 char logfilename[1024];
3126                 FILE *f;
3127
3128                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3129                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
3130                          i);
3131                 if (!strcmp(ost->enc->name, "libx264")) {
3132                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3133                 } else {
3134                     if (codec->flags & CODEC_FLAG_PASS2) {
3135                         char  *logbuffer;
3136                         size_t logbuffer_size;
3137                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3138                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3139                                 logfilename);
3140                             exit_program(1);
3141                         }
3142                         codec->stats_in = logbuffer;
3143                     }
3144                     if (codec->flags & CODEC_FLAG_PASS1) {
3145                         f = fopen(logfilename, "wb");
3146                         if (!f) {
3147                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3148                                 logfilename, strerror(errno));
3149                             exit_program(1);
3150                         }
3151                         ost->logfile = f;
3152                     }
3153                 }
3154             }
3155         }
3156     }
3157
3158     /* open each encoder */
3159     for (i = 0; i < nb_output_streams; i++) {
3160         ost = output_streams[i];
3161         if (ost->encoding_needed) {
3162             AVCodec      *codec = ost->enc;
3163             AVCodecContext *dec = NULL;
3164
3165             if ((ist = get_input_stream(ost)))
3166                 dec = ist->st->codec;
3167             if (dec && dec->subtitle_header) {
3168                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
3169                 if (!ost->st->codec->subtitle_header) {
3170                     ret = AVERROR(ENOMEM);
3171                     goto dump_format;
3172                 }
3173                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3174                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
3175             }
3176             if (!av_dict_get(ost->opts, "threads", NULL, 0))
3177                 av_dict_set(&ost->opts, "threads", "auto", 0);
3178             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
3179                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3180                         ost->file_index, ost->index);
3181                 ret = AVERROR(EINVAL);
3182                 goto dump_format;
3183             }
3184             assert_codec_experimental(ost->st->codec, 1);
3185             assert_avoptions(ost->opts);
3186             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
3187                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3188                                              " It takes bits/s as argument, not kbits/s\n");
3189             extra_size += ost->st->codec->extradata_size;
3190
3191             if (ost->st->codec->me_threshold)
3192                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
3193         }
3194     }
3195
3196     /* init input streams */
3197     for (i = 0; i < nb_input_streams; i++)
3198         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
3199             goto dump_format;
3200
3201     /* discard unused programs */
3202     for (i = 0; i < nb_input_files; i++) {
3203         InputFile *ifile = input_files[i];
3204         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3205             AVProgram *p = ifile->ctx->programs[j];
3206             int discard  = AVDISCARD_ALL;
3207
3208             for (k = 0; k < p->nb_stream_indexes; k++)
3209                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3210                     discard = AVDISCARD_DEFAULT;
3211                     break;
3212                 }
3213             p->discard = discard;
3214         }
3215     }
3216
3217     /* open files and write file headers */
3218     for (i = 0; i < nb_output_files; i++) {
3219         oc = output_files[i]->ctx;
3220         oc->interrupt_callback = int_cb;
3221         if (avformat_write_header(oc, &output_files[i]->opts) < 0) {
3222             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
3223             ret = AVERROR(EINVAL);
3224             goto dump_format;
3225         }
3226 //         assert_avoptions(output_files[i]->opts);
3227         if (strcmp(oc->oformat->name, "rtp")) {
3228             want_sdp = 0;
3229         }
3230     }
3231
3232  dump_format:
3233     /* dump the file output parameters - cannot be done before in case
3234        of stream copy */
3235     for (i = 0; i < nb_output_files; i++) {
3236         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3237     }
3238
3239     /* dump the stream mapping */
3240     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3241     for (i = 0; i < nb_input_streams; i++) {
3242         ist = input_streams[i];
3243
3244         for (j = 0; j < ist->nb_filters; j++) {
3245             AVFilterLink *link = ist->filters[j]->filter->outputs[0];
3246             if (ist->filters[j]->graph->graph_desc) {
3247                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3248                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3249                        link->dst->filter->name);
3250                 if (link->dst->input_count > 1)
3251                     av_log(NULL, AV_LOG_INFO, ":%s", link->dstpad->name);
3252                 if (nb_filtergraphs > 1)
3253                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3254                 av_log(NULL, AV_LOG_INFO, "\n");
3255             }
3256         }
3257     }
3258
3259     for (i = 0; i < nb_output_streams; i++) {
3260         ost = output_streams[i];
3261
3262         if (ost->attachment_filename) {
3263             /* an attached file */
3264             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3265                    ost->attachment_filename, ost->file_index, ost->index);
3266             continue;
3267         }
3268
3269         if (ost->filter && ost->filter->graph->graph_desc) {
3270             /* output from a complex graph */
3271             AVFilterLink *link = ost->filter->filter->inputs[0];
3272             av_log(NULL, AV_LOG_INFO, "  %s", link->src->filter->name);
3273             if (link->src->output_count > 1)
3274                 av_log(NULL, AV_LOG_INFO, ":%s", link->srcpad->name);
3275             if (nb_filtergraphs > 1)
3276                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3277
3278             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3279                    ost->index, ost->enc ? ost->enc->name : "?");
3280             continue;
3281         }
3282
3283         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3284                input_streams[ost->source_index]->file_index,
3285                input_streams[ost->source_index]->st->index,
3286                ost->file_index,
3287                ost->index);
3288         if (ost->audio_channels_mapped) {
3289             av_log(NULL, AV_LOG_INFO, " [ch:");
3290             for (j = 0; j < ost->audio_channels_mapped; j++)
3291                 if (ost->audio_channels_map[j] == -1)
3292                     av_log(NULL, AV_LOG_INFO, " M");
3293                 else
3294                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
3295             av_log(NULL, AV_LOG_INFO, "]");
3296         }
3297         if (ost->sync_ist != input_streams[ost->source_index])
3298             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3299                    ost->sync_ist->file_index,
3300                    ost->sync_ist->st->index);
3301         if (ost->stream_copy)
3302             av_log(NULL, AV_LOG_INFO, " (copy)");
3303         else
3304             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
3305                    input_streams[ost->source_index]->dec->name : "?",
3306                    ost->enc ? ost->enc->name : "?");
3307         av_log(NULL, AV_LOG_INFO, "\n");
3308     }
3309
3310     if (ret) {
3311         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3312         return ret;
3313     }
3314
3315     if (want_sdp) {
3316         print_sdp();
3317     }
3318
3319     return 0;
3320 }
3321
3322 /*
3323  * The following code is the main loop of the file converter
3324  */
3325 static int transcode(void)
3326 {
3327     int ret, i;
3328     AVFormatContext *is, *os;
3329     OutputStream *ost;
3330     InputStream *ist;
3331     uint8_t *no_packet;
3332     int no_packet_count = 0;
3333     int64_t timer_start;
3334     int key;
3335
3336     if (!(no_packet = av_mallocz(nb_input_files)))
3337         exit_program(1);
3338
3339     ret = transcode_init();
3340     if (ret < 0)
3341         goto fail;
3342
3343     if (!using_stdin) {
3344         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3345     }
3346
3347     timer_start = av_gettime();
3348
3349     for (; received_sigterm == 0;) {
3350         int file_index, ist_index, past_recording_time = 1;
3351         AVPacket pkt;
3352         int64_t ipts_min;
3353         int64_t cur_time= av_gettime();
3354
3355         ipts_min = INT64_MAX;
3356         /* if 'q' pressed, exits */
3357         if (!using_stdin) {
3358             static int64_t last_time;
3359             if (received_nb_signals)
3360                 break;
3361             /* read_key() returns 0 on EOF */
3362             if(cur_time - last_time >= 100000 && !run_as_daemon){
3363                 key =  read_key();
3364                 last_time = cur_time;
3365             }else
3366                 key = -1;
3367             if (key == 'q')
3368                 break;
3369             if (key == '+') av_log_set_level(av_log_get_level()+10);
3370             if (key == '-') av_log_set_level(av_log_get_level()-10);
3371             if (key == 's') qp_hist     ^= 1;
3372             if (key == 'h'){
3373                 if (do_hex_dump){
3374                     do_hex_dump = do_pkt_dump = 0;
3375                 } else if(do_pkt_dump){
3376                     do_hex_dump = 1;
3377                 } else
3378                     do_pkt_dump = 1;
3379                 av_log_set_level(AV_LOG_DEBUG);
3380             }
3381             if (key == 'c' || key == 'C'){
3382                 char buf[4096], target[64], command[256], arg[256] = {0};
3383                 double time;
3384                 int k, n = 0;
3385                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
3386                 i = 0;
3387                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3388                     if (k > 0)
3389                         buf[i++] = k;
3390                 buf[i] = 0;
3391                 if (k > 0 &&
3392                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3393                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3394                            target, time, command, arg);
3395                     for (i = 0; i < nb_filtergraphs; i++) {
3396                         FilterGraph *fg = filtergraphs[i];
3397                         if (fg->graph) {
3398                             if (time < 0) {
3399                                 ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3400                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3401                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
3402                             } else {
3403                                 ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3404                             }
3405                         }
3406                     }
3407                 } else {
3408                     av_log(NULL, AV_LOG_ERROR,
3409                            "Parse error, at least 3 arguments were expected, "
3410                            "only %d given in string '%s'\n", n, buf);
3411                 }
3412             }
3413             if (key == 'd' || key == 'D'){
3414                 int debug=0;
3415                 if(key == 'D') {
3416                     debug = input_streams[0]->st->codec->debug<<1;
3417                     if(!debug) debug = 1;
3418                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3419                         debug += debug;
3420                 }else
3421                     if(scanf("%d", &debug)!=1)
3422                         fprintf(stderr,"error parsing debug value\n");
3423                 for(i=0;i<nb_input_streams;i++) {
3424                     input_streams[i]->st->codec->debug = debug;
3425                 }
3426                 for(i=0;i<nb_output_streams;i++) {
3427                     ost = output_streams[i];
3428                     ost->st->codec->debug = debug;
3429                 }
3430                 if(debug) av_log_set_level(AV_LOG_DEBUG);
3431                 fprintf(stderr,"debug=%d\n", debug);
3432             }
3433             if (key == '?'){
3434                 fprintf(stderr, "key    function\n"
3435                                 "?      show this help\n"
3436                                 "+      increase verbosity\n"
3437                                 "-      decrease verbosity\n"
3438                                 "c      Send command to filtergraph\n"
3439                                 "D      cycle through available debug modes\n"
3440                                 "h      dump packets/hex press to cycle through the 3 states\n"
3441                                 "q      quit\n"
3442                                 "s      Show QP histogram\n"
3443                 );
3444             }
3445         }
3446
3447         /* check if there's any stream where output is still needed */
3448         for (i = 0; i < nb_output_streams; i++) {
3449             OutputFile *of;
3450             ost = output_streams[i];
3451             of  = output_files[ost->file_index];
3452             os  = output_files[ost->file_index]->ctx;
3453             if (ost->is_past_recording_time ||
3454                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3455                 continue;
3456             if (ost->frame_number >= ost->max_frames) {
3457                 int j;
3458                 for (j = 0; j < of->ctx->nb_streams; j++)
3459                     output_streams[of->ost_index + j]->is_past_recording_time = 1;
3460                 continue;
3461             }
3462             past_recording_time = 0;
3463         }
3464         if (past_recording_time)
3465             break;
3466
3467         /* select the stream that we must read now by looking at the
3468            smallest output pts */
3469         file_index = -1;
3470         for (i = 0; i < nb_input_streams; i++) {
3471             int64_t ipts;
3472             ist = input_streams[i];
3473             ipts = ist->pts;
3474             if (ist->discard || no_packet[ist->file_index])
3475                 continue;
3476             if (!input_files[ist->file_index]->eof_reached) {
3477                 if (ipts < ipts_min) {
3478                     ipts_min = ipts;
3479                     file_index = ist->file_index;
3480                 }
3481             }
3482         }
3483         /* if none, if is finished */
3484         if (file_index < 0) {
3485             if (no_packet_count) {
3486                 no_packet_count = 0;
3487                 memset(no_packet, 0, nb_input_files);
3488                 usleep(10000);
3489                 continue;
3490             }
3491             break;
3492         }
3493
3494         /* read a frame from it and output it in the fifo */
3495         is  = input_files[file_index]->ctx;
3496         ret = av_read_frame(is, &pkt);
3497         if (ret == AVERROR(EAGAIN)) {
3498             no_packet[file_index] = 1;
3499             no_packet_count++;
3500             continue;
3501         }
3502         if (ret < 0) {
3503             input_files[file_index]->eof_reached = 1;
3504
3505             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
3506                 ist = input_streams[input_files[file_index]->ist_index + i];
3507                 if (ist->decoding_needed)
3508                     output_packet(ist, NULL);
3509             }
3510
3511             if (opt_shortest)
3512                 break;
3513             else
3514                 continue;
3515         }
3516
3517         no_packet_count = 0;
3518         memset(no_packet, 0, nb_input_files);
3519
3520         if (do_pkt_dump) {
3521             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3522                              is->streams[pkt.stream_index]);
3523         }
3524         /* the following test is needed in case new streams appear
3525            dynamically in stream : we ignore them */
3526         if (pkt.stream_index >= input_files[file_index]->nb_streams)
3527             goto discard_packet;
3528         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
3529         ist = input_streams[ist_index];
3530         if (ist->discard)
3531             goto discard_packet;
3532
3533         if (pkt.dts != AV_NOPTS_VALUE)
3534             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3535         if (pkt.pts != AV_NOPTS_VALUE)
3536             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3537
3538         if (pkt.pts != AV_NOPTS_VALUE)
3539             pkt.pts *= ist->ts_scale;
3540         if (pkt.dts != AV_NOPTS_VALUE)
3541             pkt.dts *= ist->ts_scale;
3542
3543         if (debug_ts) {
3544             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3545                     "next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
3546                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
3547                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &ist->st->time_base),
3548                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3549                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3550                     input_files[ist->file_index]->ts_offset);
3551         }
3552
3553         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
3554             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3555             int64_t delta   = pkt_dts - ist->next_dts;
3556             if (is->iformat->flags & AVFMT_TS_DISCONT) {
3557             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3558                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3559                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3560                 pkt_dts+1<ist->pts){
3561                 input_files[ist->file_index]->ts_offset -= delta;
3562                 av_log(NULL, AV_LOG_DEBUG,
3563                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3564                        delta, input_files[ist->file_index]->ts_offset);
3565                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3566                 if (pkt.pts != AV_NOPTS_VALUE)
3567                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3568             }
3569             } else {
3570                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3571                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3572                      pkt_dts+1<ist->pts){
3573                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3574                     pkt.dts = AV_NOPTS_VALUE;
3575                 }
3576                 if (pkt.pts != AV_NOPTS_VALUE){
3577                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3578                     delta   = pkt_pts - ist->next_dts;
3579                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3580                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3581                         pkt_pts+1<ist->pts) {
3582                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3583                         pkt.pts = AV_NOPTS_VALUE;
3584                     }
3585                 }
3586             }
3587         }
3588
3589         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
3590         if (output_packet(ist, &pkt) < 0 || poll_filters() < 0) {
3591             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
3592                    ist->file_index, ist->st->index);
3593             if (exit_on_error)
3594                 exit_program(1);
3595             av_free_packet(&pkt);
3596             continue;
3597         }
3598
3599     discard_packet:
3600         av_free_packet(&pkt);
3601
3602         /* dump report by using the output first video and audio streams */
3603         print_report(0, timer_start, cur_time);
3604     }
3605
3606     /* at the end of stream, we must flush the decoder buffers */
3607     for (i = 0; i < nb_input_streams; i++) {
3608         ist = input_streams[i];
3609         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3610             output_packet(ist, NULL);
3611         }
3612     }
3613     poll_filters();
3614     flush_encoders();
3615
3616     term_exit();
3617
3618     /* write the trailer if needed and close file */
3619     for (i = 0; i < nb_output_files; i++) {
3620         os = output_files[i]->ctx;
3621         av_write_trailer(os);
3622     }
3623
3624     /* dump report by using the first video and audio streams */
3625     print_report(1, timer_start, av_gettime());
3626
3627     /* close each encoder */
3628     for (i = 0; i < nb_output_streams; i++) {
3629         ost = output_streams[i];
3630         if (ost->encoding_needed) {
3631             av_freep(&ost->st->codec->stats_in);
3632             avcodec_close(ost->st->codec);
3633         }
3634     }
3635
3636     /* close each decoder */
3637     for (i = 0; i < nb_input_streams; i++) {
3638         ist = input_streams[i];
3639         if (ist->decoding_needed) {
3640             avcodec_close(ist->st->codec);
3641         }
3642     }
3643
3644     /* finished ! */
3645     ret = 0;
3646
3647  fail:
3648     av_freep(&no_packet);
3649
3650     if (output_streams) {
3651         for (i = 0; i < nb_output_streams; i++) {
3652             ost = output_streams[i];
3653             if (ost) {
3654                 if (ost->stream_copy)
3655                     av_freep(&ost->st->codec->extradata);
3656                 if (ost->logfile) {
3657                     fclose(ost->logfile);
3658                     ost->logfile = NULL;
3659                 }
3660                 av_fifo_free(ost->fifo); /* works even if fifo is not
3661                                              initialized but set to zero */
3662                 av_freep(&ost->st->codec->subtitle_header);
3663                 av_free(ost->forced_kf_pts);
3664                 swr_free(&ost->swr);
3665                 av_dict_free(&ost->opts);
3666             }
3667         }
3668     }
3669     return ret;
3670 }
3671
3672 static int opt_frame_crop(const char *opt, const char *arg)
3673 {
3674     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3675     return AVERROR(EINVAL);
3676 }
3677
3678 static int opt_pad(const char *opt, const char *arg)
3679 {
3680     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3681     return -1;
3682 }
3683
3684 static int opt_video_channel(const char *opt, const char *arg)
3685 {
3686     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3687     return opt_default("channel", arg);
3688 }
3689
3690 static int opt_video_standard(const char *opt, const char *arg)
3691 {
3692     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3693     return opt_default("standard", arg);
3694 }
3695
3696 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3697 {
3698     audio_codec_name = arg;
3699     return parse_option(o, "codec:a", arg, options);
3700 }
3701
3702 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3703 {
3704     video_codec_name = arg;
3705     return parse_option(o, "codec:v", arg, options);
3706 }
3707
3708 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3709 {
3710     subtitle_codec_name = arg;
3711     return parse_option(o, "codec:s", arg, options);
3712 }
3713
3714 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3715 {
3716     return parse_option(o, "codec:d", arg, options);
3717 }
3718
3719 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3720 {
3721     StreamMap *m = NULL;
3722     int i, negative = 0, file_idx;
3723     int sync_file_idx = -1, sync_stream_idx = 0;
3724     char *p, *sync;
3725     char *map;
3726
3727     if (*arg == '-') {
3728         negative = 1;
3729         arg++;
3730     }
3731     map = av_strdup(arg);
3732
3733     /* parse sync stream first, just pick first matching stream */
3734     if (sync = strchr(map, ',')) {
3735         *sync = 0;
3736         sync_file_idx = strtol(sync + 1, &sync, 0);
3737         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3738             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3739             exit_program(1);
3740         }
3741         if (*sync)
3742             sync++;
3743         for (i = 0; i < input_files[sync_file_idx]->nb_streams; i++)
3744             if (check_stream_specifier(input_files[sync_file_idx]->ctx,
3745                                        input_files[sync_file_idx]->ctx->streams[i], sync) == 1) {
3746                 sync_stream_idx = i;
3747                 break;
3748             }
3749         if (i == input_files[sync_file_idx]->nb_streams) {
3750             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3751                                        "match any streams.\n", arg);
3752             exit_program(1);
3753         }
3754     }
3755
3756
3757     if (map[0] == '[') {
3758         /* this mapping refers to lavfi output */
3759         const char *c = map + 1;
3760         o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3761                                     &o->nb_stream_maps, o->nb_stream_maps + 1);
3762         m = &o->stream_maps[o->nb_stream_maps - 1];
3763         m->linklabel = av_get_token(&c, "]");
3764         if (!m->linklabel) {
3765             av_log(NULL, AV_LOG_ERROR, "Invalid output link label: %s.\n", map);
3766             exit_program(1);
3767         }
3768     } else {
3769         file_idx = strtol(map, &p, 0);
3770         if (file_idx >= nb_input_files || file_idx < 0) {
3771             av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3772             exit_program(1);
3773         }
3774         if (negative)
3775             /* disable some already defined maps */
3776             for (i = 0; i < o->nb_stream_maps; i++) {
3777                 m = &o->stream_maps[i];
3778                 if (file_idx == m->file_index &&
3779                     check_stream_specifier(input_files[m->file_index]->ctx,
3780                                            input_files[m->file_index]->ctx->streams[m->stream_index],
3781                                            *p == ':' ? p + 1 : p) > 0)
3782                     m->disabled = 1;
3783             }
3784         else
3785             for (i = 0; i < input_files[file_idx]->nb_streams; i++) {
3786                 if (check_stream_specifier(input_files[file_idx]->ctx, input_files[file_idx]->ctx->streams[i],
3787                             *p == ':' ? p + 1 : p) <= 0)
3788                     continue;
3789                 o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3790                                             &o->nb_stream_maps, o->nb_stream_maps + 1);
3791                 m = &o->stream_maps[o->nb_stream_maps - 1];
3792
3793                 m->file_index   = file_idx;
3794                 m->stream_index = i;
3795
3796                 if (sync_file_idx >= 0) {
3797                     m->sync_file_index   = sync_file_idx;
3798                     m->sync_stream_index = sync_stream_idx;
3799                 } else {
3800                     m->sync_file_index   = file_idx;
3801                     m->sync_stream_index = i;
3802                 }
3803             }
3804     }
3805
3806     if (!m) {
3807         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3808         exit_program(1);
3809     }
3810
3811     av_freep(&map);
3812     return 0;
3813 }
3814
3815 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3816 {
3817     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3818                                 &o->nb_attachments, o->nb_attachments + 1);
3819     o->attachments[o->nb_attachments - 1] = arg;
3820     return 0;
3821 }
3822
3823 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3824 {
3825     int n;
3826     AVStream *st;
3827     AudioChannelMap *m;
3828
3829     o->audio_channel_maps =
3830         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3831                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3832     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3833
3834     /* muted channel syntax */
3835     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3836     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3837         m->file_idx = m->stream_idx = -1;
3838         if (n == 1)
3839             m->ofile_idx = m->ostream_idx = -1;
3840         return 0;
3841     }
3842
3843     /* normal syntax */
3844     n = sscanf(arg, "%d.%d.%d:%d.%d",
3845                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3846                &m->ofile_idx, &m->ostream_idx);
3847
3848     if (n != 3 && n != 5) {
3849         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3850                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3851         exit_program(1);
3852     }
3853
3854     if (n != 5) // only file.stream.channel specified
3855         m->ofile_idx = m->ostream_idx = -1;
3856
3857     /* check input */
3858     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3859         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3860                m->file_idx);
3861         exit_program(1);
3862     }
3863     if (m->stream_idx < 0 ||
3864         m->stream_idx >= input_files[m->file_idx]->nb_streams) {
3865         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3866                m->file_idx, m->stream_idx);
3867         exit_program(1);
3868     }
3869     st = input_files[m->file_idx]->ctx->streams[m->stream_idx];
3870     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3871         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3872                m->file_idx, m->stream_idx);
3873         exit_program(1);
3874     }
3875     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3876         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3877                m->file_idx, m->stream_idx, m->channel_idx);
3878         exit_program(1);
3879     }
3880     return 0;
3881 }
3882
3883 /**
3884  * Parse a metadata specifier in arg.
3885  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3886  * @param index for type c/p, chapter/program index is written here
3887  * @param stream_spec for type s, the stream specifier is written here
3888  */
3889 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3890 {
3891     if (*arg) {
3892         *type = *arg;
3893         switch (*arg) {
3894         case 'g':
3895             break;
3896         case 's':
3897             if (*(++arg) && *arg != ':') {
3898                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3899                 exit_program(1);
3900             }
3901             *stream_spec = *arg == ':' ? arg + 1 : "";
3902             break;
3903         case 'c':
3904         case 'p':
3905             if (*(++arg) == ':')
3906                 *index = strtol(++arg, NULL, 0);
3907             break;
3908         default:
3909             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3910             exit_program(1);
3911         }
3912     } else
3913         *type = 'g';
3914 }
3915
3916 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3917 {
3918     AVDictionary **meta_in = NULL;
3919     AVDictionary **meta_out = NULL;
3920     int i, ret = 0;
3921     char type_in, type_out;
3922     const char *istream_spec = NULL, *ostream_spec = NULL;
3923     int idx_in = 0, idx_out = 0;
3924
3925     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3926     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3927
3928     if (!ic) {
3929         if (type_out == 'g' || !*outspec)
3930             o->metadata_global_manual = 1;
3931         if (type_out == 's' || !*outspec)
3932             o->metadata_streams_manual = 1;
3933         if (type_out == 'c' || !*outspec)
3934             o->metadata_chapters_manual = 1;
3935         return 0;
3936     }
3937
3938     if (type_in == 'g' || type_out == 'g')
3939         o->metadata_global_manual = 1;
3940     if (type_in == 's' || type_out == 's')
3941         o->metadata_streams_manual = 1;
3942     if (type_in == 'c' || type_out == 'c')
3943         o->metadata_chapters_manual = 1;
3944
3945 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3946     if ((index) < 0 || (index) >= (nb_elems)) {\
3947         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3948                 (desc), (index));\
3949         exit_program(1);\
3950     }
3951
3952 #define SET_DICT(type, meta, context, index)\
3953         switch (type) {\
3954         case 'g':\
3955             meta = &context->metadata;\
3956             break;\
3957         case 'c':\
3958             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3959             meta = &context->chapters[index]->metadata;\
3960             break;\
3961         case 'p':\
3962             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3963             meta = &context->programs[index]->metadata;\
3964             break;\
3965         }\
3966
3967     SET_DICT(type_in, meta_in, ic, idx_in);
3968     SET_DICT(type_out, meta_out, oc, idx_out);
3969
3970     /* for input streams choose first matching stream */
3971     if (type_in == 's') {
3972         for (i = 0; i < ic->nb_streams; i++) {
3973             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3974                 meta_in = &ic->streams[i]->metadata;
3975                 break;
3976             } else if (ret < 0)
3977                 exit_program(1);
3978         }
3979         if (!meta_in) {
3980             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3981             exit_program(1);
3982         }
3983     }
3984
3985     if (type_out == 's') {
3986         for (i = 0; i < oc->nb_streams; i++) {
3987             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3988                 meta_out = &oc->streams[i]->metadata;
3989                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3990             } else if (ret < 0)
3991                 exit_program(1);
3992         }
3993     } else
3994         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3995
3996     return 0;
3997 }
3998
3999 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
4000 {
4001     char buf[128];
4002     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
4003     struct tm time = *gmtime((time_t*)&recording_timestamp);
4004     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
4005     parse_option(o, "metadata", buf, options);
4006
4007     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
4008                                  "tag instead.\n", opt);
4009     return 0;
4010 }
4011
4012 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
4013 {
4014     const char *codec_string = encoder ? "encoder" : "decoder";
4015     AVCodec *codec;
4016
4017     codec = encoder ?
4018         avcodec_find_encoder_by_name(name) :
4019         avcodec_find_decoder_by_name(name);
4020     if (!codec) {
4021         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
4022         exit_program(1);
4023     }
4024     if (codec->type != type) {
4025         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
4026         exit_program(1);
4027     }
4028     return codec;
4029 }
4030
4031 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
4032 {
4033     char *codec_name = NULL;
4034
4035     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
4036     if (codec_name) {
4037         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
4038         st->codec->codec_id = codec->id;
4039         return codec;
4040     } else
4041         return avcodec_find_decoder(st->codec->codec_id);
4042 }
4043
4044 /**
4045  * Add all the streams from the given input file to the global
4046  * list of input streams.
4047  */
4048 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
4049 {
4050     int i;
4051     char *next, *codec_tag = NULL;
4052
4053     for (i = 0; i < ic->nb_streams; i++) {
4054         AVStream *st = ic->streams[i];
4055         AVCodecContext *dec = st->codec;
4056         InputStream *ist = av_mallocz(sizeof(*ist));
4057
4058         if (!ist)
4059             exit_program(1);
4060
4061         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
4062         input_streams[nb_input_streams - 1] = ist;
4063
4064         ist->st = st;
4065         ist->file_index = nb_input_files;
4066         ist->discard = 1;
4067         st->discard  = AVDISCARD_ALL;
4068         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
4069
4070         ist->ts_scale = 1.0;
4071         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
4072
4073         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
4074         if (codec_tag) {
4075             uint32_t tag = strtol(codec_tag, &next, 0);
4076             if (*next)
4077                 tag = AV_RL32(codec_tag);
4078             st->codec->codec_tag = tag;
4079         }
4080
4081         ist->dec = choose_decoder(o, ic, st);
4082
4083         switch (dec->codec_type) {
4084         case AVMEDIA_TYPE_VIDEO:
4085             if(!ist->dec)
4086                 ist->dec = avcodec_find_decoder(dec->codec_id);
4087             if (dec->lowres) {
4088                 dec->flags |= CODEC_FLAG_EMU_EDGE;
4089             }
4090
4091             ist->resample_height  = dec->height;
4092             ist->resample_width   = dec->width;
4093             ist->resample_pix_fmt = dec->pix_fmt;
4094
4095             break;
4096         case AVMEDIA_TYPE_AUDIO:
4097         case AVMEDIA_TYPE_DATA:
4098         case AVMEDIA_TYPE_SUBTITLE:
4099             if(!ist->dec)
4100                 ist->dec = avcodec_find_decoder(dec->codec_id);
4101             break;
4102         case AVMEDIA_TYPE_ATTACHMENT:
4103         case AVMEDIA_TYPE_UNKNOWN:
4104             break;
4105         default:
4106             abort();
4107         }
4108     }
4109 }
4110
4111 static void assert_file_overwrite(const char *filename)
4112 {
4113     if ((!file_overwrite || no_file_overwrite) &&
4114         (strchr(filename, ':') == NULL || filename[1] == ':' ||
4115          av_strstart(filename, "file:", NULL))) {
4116         if (avio_check(filename, 0) == 0) {
4117             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
4118                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
4119                 fflush(stderr);
4120                 term_exit();
4121                 signal(SIGINT, SIG_DFL);
4122                 if (!read_yesno()) {
4123                     av_log(NULL, AV_LOG_FATAL, "Not overwriting - exiting\n");
4124                     exit_program(1);
4125                 }
4126                 term_init();
4127             }
4128             else {
4129                 av_log(NULL, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
4130                 exit_program(1);
4131             }
4132         }
4133     }
4134 }
4135
4136 static void dump_attachment(AVStream *st, const char *filename)
4137 {
4138     int ret;
4139     AVIOContext *out = NULL;
4140     AVDictionaryEntry *e;
4141
4142     if (!st->codec->extradata_size) {
4143         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
4144                nb_input_files - 1, st->index);
4145         return;
4146     }
4147     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
4148         filename = e->value;
4149     if (!*filename) {
4150         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
4151                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
4152         exit_program(1);
4153     }
4154
4155     assert_file_overwrite(filename);
4156
4157     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
4158         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
4159                filename);
4160         exit_program(1);
4161     }
4162
4163     avio_write(out, st->codec->extradata, st->codec->extradata_size);
4164     avio_flush(out);
4165     avio_close(out);
4166 }
4167
4168 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
4169 {
4170     AVFormatContext *ic;
4171     AVInputFormat *file_iformat = NULL;
4172     int err, i, ret;
4173     int64_t timestamp;
4174     uint8_t buf[128];
4175     AVDictionary **opts;
4176     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
4177
4178     if (o->format) {
4179         if (!(file_iformat = av_find_input_format(o->format))) {
4180             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
4181             exit_program(1);
4182         }
4183     }
4184
4185     if (!strcmp(filename, "-"))
4186         filename = "pipe:";
4187
4188     using_stdin |= !strncmp(filename, "pipe:", 5) ||
4189                     !strcmp(filename, "/dev/stdin");
4190
4191     /* get default parameters from command line */
4192     ic = avformat_alloc_context();
4193     if (!ic) {
4194         print_error(filename, AVERROR(ENOMEM));
4195         exit_program(1);
4196     }
4197     if (o->nb_audio_sample_rate) {
4198         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
4199         av_dict_set(&format_opts, "sample_rate", buf, 0);
4200     }
4201     if (o->nb_audio_channels) {
4202         /* because we set audio_channels based on both the "ac" and
4203          * "channel_layout" options, we need to check that the specified
4204          * demuxer actually has the "channels" option before setting it */
4205         if (file_iformat && file_iformat->priv_class &&
4206             av_opt_find(&file_iformat->priv_class, "channels", NULL, 0,
4207                         AV_OPT_SEARCH_FAKE_OBJ)) {
4208             snprintf(buf, sizeof(buf), "%d",
4209                      o->audio_channels[o->nb_audio_channels - 1].u.i);
4210             av_dict_set(&format_opts, "channels", buf, 0);
4211         }
4212     }
4213     if (o->nb_frame_rates) {
4214         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
4215     }
4216     if (o->nb_frame_sizes) {
4217         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
4218     }
4219     if (o->nb_frame_pix_fmts)
4220         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
4221
4222     ic->video_codec_id   = video_codec_name ?
4223         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
4224     ic->audio_codec_id   = audio_codec_name ?
4225         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
4226     ic->subtitle_codec_id= subtitle_codec_name ?
4227         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
4228     ic->flags |= AVFMT_FLAG_NONBLOCK;
4229     ic->interrupt_callback = int_cb;
4230
4231     /* open the input file with generic avformat function */
4232     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
4233     if (err < 0) {
4234         print_error(filename, err);
4235         exit_program(1);
4236     }
4237     assert_avoptions(format_opts);
4238
4239     /* apply forced codec ids */
4240     for (i = 0; i < ic->nb_streams; i++)
4241         choose_decoder(o, ic, ic->streams[i]);
4242
4243     /* Set AVCodecContext options for avformat_find_stream_info */
4244     opts = setup_find_stream_info_opts(ic, codec_opts);
4245     orig_nb_streams = ic->nb_streams;
4246
4247     /* If not enough info to get the stream parameters, we decode the
4248        first frames to get it. (used in mpeg case for example) */
4249     ret = avformat_find_stream_info(ic, opts);
4250     if (ret < 0) {
4251         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
4252         avformat_close_input(&ic);
4253         exit_program(1);
4254     }
4255
4256     timestamp = o->start_time;
4257     /* add the stream start time */
4258     if (ic->start_time != AV_NOPTS_VALUE)
4259         timestamp += ic->start_time;
4260
4261     /* if seeking requested, we execute it */
4262     if (o->start_time != 0) {
4263         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
4264         if (ret < 0) {
4265             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
4266                    filename, (double)timestamp / AV_TIME_BASE);
4267         }
4268     }
4269
4270     /* update the current parameters so that they match the one of the input stream */
4271     add_input_streams(o, ic);
4272
4273     /* dump the file content */
4274     av_dump_format(ic, nb_input_files, filename, 0);
4275
4276     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
4277     if (!(input_files[nb_input_files - 1] = av_mallocz(sizeof(*input_files[0]))))
4278         exit_program(1);
4279
4280     input_files[nb_input_files - 1]->ctx        = ic;
4281     input_files[nb_input_files - 1]->ist_index  = nb_input_streams - ic->nb_streams;
4282     input_files[nb_input_files - 1]->ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
4283     input_files[nb_input_files - 1]->nb_streams = ic->nb_streams;
4284     input_files[nb_input_files - 1]->rate_emu   = o->rate_emu;
4285
4286     for (i = 0; i < o->nb_dump_attachment; i++) {
4287         int j;
4288
4289         for (j = 0; j < ic->nb_streams; j++) {
4290             AVStream *st = ic->streams[j];
4291
4292             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
4293                 dump_attachment(st, o->dump_attachment[i].u.str);
4294         }
4295     }
4296
4297     for