f6a9765d67325840cab0468f54a4659740134285
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48 #include "libswresample/swresample.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/vsrc_buffer.h"
58 #endif
59
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/types.h>
62 #include <sys/time.h>
63 #include <sys/resource.h>
64 #elif HAVE_GETPROCESSTIMES
65 #include <windows.h>
66 #endif
67 #if HAVE_GETPROCESSMEMORYINFO
68 #include <windows.h>
69 #include <psapi.h>
70 #endif
71
72 #if HAVE_SYS_SELECT_H
73 #include <sys/select.h>
74 #endif
75
76 #if HAVE_TERMIOS_H
77 #include <fcntl.h>
78 #include <sys/ioctl.h>
79 #include <sys/time.h>
80 #include <termios.h>
81 #elif HAVE_KBHIT
82 #include <conio.h>
83 #endif
84 #include <time.h>
85
86 #include "cmdutils.h"
87
88 #include "libavutil/avassert.h"
89
90 const char program_name[] = "ffmpeg";
91 const int program_birth_year = 2000;
92
93 /* select an input stream for an output stream */
94 typedef struct StreamMap {
95     int disabled;           /** 1 is this mapping is disabled by a negative map */
96     int file_index;
97     int stream_index;
98     int sync_file_index;
99     int sync_stream_index;
100 } StreamMap;
101
102 typedef struct {
103     int  file_idx,  stream_idx,  channel_idx; // input
104     int ofile_idx, ostream_idx;               // output
105 } AudioChannelMap;
106
107 /**
108  * select an input file for an output file
109  */
110 typedef struct MetadataMap {
111     int  file;      ///< file index
112     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
113     int  index;     ///< stream/chapter/program number
114 } MetadataMap;
115
116 static const OptionDef options[];
117
118 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
119
120 static int frame_bits_per_raw_sample = 0;
121 static int video_discard = 0;
122 static int same_quant = 0;
123 static int do_deinterlace = 0;
124 static int intra_dc_precision = 8;
125 static int loop_input = 0;
126 static int loop_output = AVFMT_NOOUTPUTLOOP;
127 static int qp_hist = 0;
128 static int intra_only = 0;
129 static const char *video_codec_name    = NULL;
130 static const char *audio_codec_name    = NULL;
131 static const char *subtitle_codec_name = NULL;
132
133 static int file_overwrite = 0;
134 static int do_benchmark = 0;
135 static int do_hex_dump = 0;
136 static int do_pkt_dump = 0;
137 static int do_psnr = 0;
138 static int do_pass = 0;
139 static const char *pass_logfilename_prefix;
140 static int video_sync_method= -1;
141 static int audio_sync_method= 0;
142 static float audio_drift_threshold= 0.1;
143 static int copy_ts= 0;
144 static int copy_tb= 0;
145 static int opt_shortest = 0;
146 static char *vstats_filename;
147 static FILE *vstats_file;
148
149 static int audio_volume = 256;
150
151 static int exit_on_error = 0;
152 static int using_stdin = 0;
153 static int run_as_daemon  = 0;
154 static volatile int received_nb_signals = 0;
155 static int64_t video_size = 0;
156 static int64_t audio_size = 0;
157 static int64_t extra_size = 0;
158 static int nb_frames_dup = 0;
159 static int nb_frames_drop = 0;
160 static int input_sync;
161
162 static float dts_delta_threshold = 10;
163
164 static int print_stats = 1;
165
166 static uint8_t *audio_buf;
167 static uint8_t *audio_out;
168 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
169
170 static void *samples;
171 static uint8_t *input_tmp= NULL;
172
173 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
174
175 typedef struct InputStream {
176     int file_index;
177     AVStream *st;
178     int discard;             /* true if stream data should be discarded */
179     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
180     AVCodec *dec;
181
182     int64_t       start;     /* time when read started */
183     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
184                                 is not defined */
185     int64_t       pts;       /* current pts */
186     double ts_scale;
187     int is_start;            /* is 1 at the start and after a discontinuity */
188     int showed_multi_packet_warning;
189     AVDictionary *opts;
190 } InputStream;
191
192 typedef struct InputFile {
193     AVFormatContext *ctx;
194     int eof_reached;      /* true if eof reached */
195     int ist_index;        /* index of first stream in input_streams */
196     int buffer_size;      /* current total buffer size */
197     int64_t ts_offset;
198     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
199                              from ctx.nb_streams if new streams appear during av_read_frame() */
200     int rate_emu;
201 } InputFile;
202
203 typedef struct OutputStream {
204     int file_index;          /* file index */
205     int index;               /* stream index in the output file */
206     int source_index;        /* InputStream index */
207     AVStream *st;            /* stream in the output file */
208     int encoding_needed;     /* true if encoding needed for this stream */
209     int frame_number;
210     /* input pts and corresponding output pts
211        for A/V sync */
212     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
213     struct InputStream *sync_ist; /* input stream to sync against */
214     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
215     AVBitStreamFilterContext *bitstream_filters;
216     AVCodec *enc;
217     int64_t max_frames;
218
219     /* video only */
220     int video_resample;
221     AVFrame resample_frame;              /* temporary frame for image resampling */
222     struct SwsContext *img_resample_ctx; /* for image resampling */
223     int resample_height;
224     int resample_width;
225     int resample_pix_fmt;
226     AVRational frame_rate;
227     int force_fps;
228     int top_field_first;
229
230     float frame_aspect_ratio;
231
232     /* forced key frames */
233     int64_t *forced_kf_pts;
234     int forced_kf_count;
235     int forced_kf_index;
236
237     /* audio only */
238     int audio_resample;
239     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
240     int audio_channels_mapped;           ///< number of channels in audio_channels_map
241     int resample_sample_fmt;
242     int resample_channels;
243     int resample_sample_rate;
244     float rematrix_volume;
245     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
246     FILE *logfile;
247
248     struct SwrContext *swr;
249
250 #if CONFIG_AVFILTER
251     AVFilterContext *output_video_filter;
252     AVFilterContext *input_video_filter;
253     AVFilterBufferRef *picref;
254     char *avfilter;
255     AVFilterGraph *graph;
256 #endif
257
258     int64_t sws_flags;
259     AVDictionary *opts;
260     int is_past_recording_time;
261     int stream_copy;
262     const char *attachment_filename;
263     int copy_initial_nonkeyframes;
264 } OutputStream;
265
266
267 #if HAVE_TERMIOS_H
268
269 /* init terminal so that we can grab keys */
270 static struct termios oldtty;
271 #endif
272
273 typedef struct OutputFile {
274     AVFormatContext *ctx;
275     AVDictionary *opts;
276     int ost_index;       /* index of the first stream in output_streams */
277     int64_t recording_time; /* desired length of the resulting file in microseconds */
278     int64_t start_time;     /* start time in microseconds */
279     uint64_t limit_filesize;
280 } OutputFile;
281
282 static InputStream *input_streams = NULL;
283 static int         nb_input_streams = 0;
284 static InputFile   *input_files   = NULL;
285 static int         nb_input_files   = 0;
286
287 static OutputStream *output_streams = NULL;
288 static int        nb_output_streams = 0;
289 static OutputFile   *output_files   = NULL;
290 static int        nb_output_files   = 0;
291
292 typedef struct OptionsContext {
293     /* input/output options */
294     int64_t start_time;
295     const char *format;
296
297     SpecifierOpt *codec_names;
298     int        nb_codec_names;
299     SpecifierOpt *audio_channels;
300     int        nb_audio_channels;
301     SpecifierOpt *audio_sample_rate;
302     int        nb_audio_sample_rate;
303     SpecifierOpt *rematrix_volume;
304     int        nb_rematrix_volume;
305     SpecifierOpt *frame_rates;
306     int        nb_frame_rates;
307     SpecifierOpt *frame_sizes;
308     int        nb_frame_sizes;
309     SpecifierOpt *frame_pix_fmts;
310     int        nb_frame_pix_fmts;
311
312     /* input options */
313     int64_t input_ts_offset;
314     int rate_emu;
315
316     SpecifierOpt *ts_scale;
317     int        nb_ts_scale;
318     SpecifierOpt *dump_attachment;
319     int        nb_dump_attachment;
320
321     /* output options */
322     StreamMap *stream_maps;
323     int     nb_stream_maps;
324     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
325     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
326     /* first item specifies output metadata, second is input */
327     MetadataMap (*meta_data_maps)[2];
328     int nb_meta_data_maps;
329     int metadata_global_manual;
330     int metadata_streams_manual;
331     int metadata_chapters_manual;
332     const char **attachments;
333     int       nb_attachments;
334
335     int chapters_input_file;
336
337     int64_t recording_time;
338     uint64_t limit_filesize;
339     float mux_preload;
340     float mux_max_delay;
341
342     int video_disable;
343     int audio_disable;
344     int subtitle_disable;
345     int data_disable;
346
347     /* indexed by output file stream index */
348     int   *streamid_map;
349     int nb_streamid_map;
350
351     SpecifierOpt *metadata;
352     int        nb_metadata;
353     SpecifierOpt *max_frames;
354     int        nb_max_frames;
355     SpecifierOpt *bitstream_filters;
356     int        nb_bitstream_filters;
357     SpecifierOpt *codec_tags;
358     int        nb_codec_tags;
359     SpecifierOpt *sample_fmts;
360     int        nb_sample_fmts;
361     SpecifierOpt *qscale;
362     int        nb_qscale;
363     SpecifierOpt *forced_key_frames;
364     int        nb_forced_key_frames;
365     SpecifierOpt *force_fps;
366     int        nb_force_fps;
367     SpecifierOpt *frame_aspect_ratios;
368     int        nb_frame_aspect_ratios;
369     SpecifierOpt *rc_overrides;
370     int        nb_rc_overrides;
371     SpecifierOpt *intra_matrices;
372     int        nb_intra_matrices;
373     SpecifierOpt *inter_matrices;
374     int        nb_inter_matrices;
375     SpecifierOpt *top_field_first;
376     int        nb_top_field_first;
377     SpecifierOpt *presets;
378     int        nb_presets;
379     SpecifierOpt *copy_initial_nonkeyframes;
380     int        nb_copy_initial_nonkeyframes;
381 #if CONFIG_AVFILTER
382     SpecifierOpt *filters;
383     int        nb_filters;
384 #endif
385 } OptionsContext;
386
387 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
388 {\
389     int i, ret;\
390     for (i = 0; i < o->nb_ ## name; i++) {\
391         char *spec = o->name[i].specifier;\
392         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
393             outvar = o->name[i].u.type;\
394         else if (ret < 0)\
395             exit_program(1);\
396     }\
397 }
398
399 static void reset_options(OptionsContext *o, int is_input)
400 {
401     const OptionDef *po = options;
402     OptionsContext bak= *o;
403
404     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
405     while (po->name) {
406         void *dst = (uint8_t*)o + po->u.off;
407
408         if (po->flags & OPT_SPEC) {
409             SpecifierOpt **so = dst;
410             int i, *count = (int*)(so + 1);
411             for (i = 0; i < *count; i++) {
412                 av_freep(&(*so)[i].specifier);
413                 if (po->flags & OPT_STRING)
414                     av_freep(&(*so)[i].u.str);
415             }
416             av_freep(so);
417             *count = 0;
418         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
419             av_freep(dst);
420         po++;
421     }
422
423     av_freep(&o->stream_maps);
424     av_freep(&o->audio_channel_maps);
425     av_freep(&o->meta_data_maps);
426     av_freep(&o->streamid_map);
427
428     memset(o, 0, sizeof(*o));
429
430     if(is_input) o->recording_time = bak.recording_time;
431     else         o->recording_time = INT64_MAX;
432     o->mux_max_delay  = 0.7;
433     o->limit_filesize = UINT64_MAX;
434     o->chapters_input_file = INT_MAX;
435
436     uninit_opts();
437     init_opts();
438 }
439
440 #if CONFIG_AVFILTER
441
442 static int configure_video_filters(InputStream *ist, OutputStream *ost)
443 {
444     AVFilterContext *last_filter, *filter;
445     /** filter graph containing all filters including input & output */
446     AVCodecContext *codec = ost->st->codec;
447     AVCodecContext *icodec = ist->st->codec;
448     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
449     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
450     AVRational sample_aspect_ratio;
451     char args[255];
452     int ret;
453
454     ost->graph = avfilter_graph_alloc();
455
456     if (ist->st->sample_aspect_ratio.num){
457         sample_aspect_ratio = ist->st->sample_aspect_ratio;
458     }else
459         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
460
461     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
462              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
463              sample_aspect_ratio.num, sample_aspect_ratio.den);
464
465     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
466                                        "src", args, NULL, ost->graph);
467     if (ret < 0)
468         return ret;
469 #if FF_API_OLD_VSINK_API
470     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
471                                        "out", NULL, pix_fmts, ost->graph);
472 #else
473     buffersink_params->pixel_fmts = pix_fmts;
474     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
475                                        "out", NULL, buffersink_params, ost->graph);
476 #endif
477     av_freep(&buffersink_params);
478     if (ret < 0)
479         return ret;
480     last_filter = ost->input_video_filter;
481
482     if (codec->width  != icodec->width || codec->height != icodec->height) {
483         snprintf(args, 255, "%d:%d:flags=0x%X",
484                  codec->width,
485                  codec->height,
486                  (unsigned)ost->sws_flags);
487         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
488                                                 NULL, args, NULL, ost->graph)) < 0)
489             return ret;
490         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
491             return ret;
492         last_filter = filter;
493     }
494
495     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
496     ost->graph->scale_sws_opts = av_strdup(args);
497
498     if (ost->avfilter) {
499         AVFilterInOut *outputs = avfilter_inout_alloc();
500         AVFilterInOut *inputs  = avfilter_inout_alloc();
501
502         outputs->name    = av_strdup("in");
503         outputs->filter_ctx = last_filter;
504         outputs->pad_idx = 0;
505         outputs->next    = NULL;
506
507         inputs->name    = av_strdup("out");
508         inputs->filter_ctx = ost->output_video_filter;
509         inputs->pad_idx = 0;
510         inputs->next    = NULL;
511
512         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
513             return ret;
514         av_freep(&ost->avfilter);
515     } else {
516         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
517             return ret;
518     }
519
520     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
521         return ret;
522
523     codec->width  = ost->output_video_filter->inputs[0]->w;
524     codec->height = ost->output_video_filter->inputs[0]->h;
525     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
526         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
527         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
528         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
529
530     return 0;
531 }
532 #endif /* CONFIG_AVFILTER */
533
534 static void term_exit(void)
535 {
536     av_log(NULL, AV_LOG_QUIET, "%s", "");
537 #if HAVE_TERMIOS_H
538     if(!run_as_daemon)
539         tcsetattr (0, TCSANOW, &oldtty);
540 #endif
541 }
542
543 static volatile int received_sigterm = 0;
544
545 static void sigterm_handler(int sig)
546 {
547     received_sigterm = sig;
548     received_nb_signals++;
549     term_exit();
550 }
551
552 static void term_init(void)
553 {
554 #if HAVE_TERMIOS_H
555     if(!run_as_daemon){
556     struct termios tty;
557
558     tcgetattr (0, &tty);
559     oldtty = tty;
560     atexit(term_exit);
561
562     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
563                           |INLCR|IGNCR|ICRNL|IXON);
564     tty.c_oflag |= OPOST;
565     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
566     tty.c_cflag &= ~(CSIZE|PARENB);
567     tty.c_cflag |= CS8;
568     tty.c_cc[VMIN] = 1;
569     tty.c_cc[VTIME] = 0;
570
571     tcsetattr (0, TCSANOW, &tty);
572     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
573     }
574 #endif
575     avformat_network_deinit();
576
577     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
578     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
579 #ifdef SIGXCPU
580     signal(SIGXCPU, sigterm_handler);
581 #endif
582 }
583
584 /* read a key without blocking */
585 static int read_key(void)
586 {
587     unsigned char ch;
588 #if HAVE_TERMIOS_H
589     int n = 1;
590     struct timeval tv;
591     fd_set rfds;
592
593     FD_ZERO(&rfds);
594     FD_SET(0, &rfds);
595     tv.tv_sec = 0;
596     tv.tv_usec = 0;
597     n = select(1, &rfds, NULL, NULL, &tv);
598     if (n > 0) {
599         n = read(0, &ch, 1);
600         if (n == 1)
601             return ch;
602
603         return n;
604     }
605 #elif HAVE_KBHIT
606 #    if HAVE_PEEKNAMEDPIPE
607     static int is_pipe;
608     static HANDLE input_handle;
609     DWORD dw, nchars;
610     if(!input_handle){
611         input_handle = GetStdHandle(STD_INPUT_HANDLE);
612         is_pipe = !GetConsoleMode(input_handle, &dw);
613     }
614
615     if (stdin->_cnt > 0) {
616         read(0, &ch, 1);
617         return ch;
618     }
619     if (is_pipe) {
620         /* When running under a GUI, you will end here. */
621         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
622             return -1;
623         //Read it
624         if(nchars != 0) {
625             read(0, &ch, 1);
626             return ch;
627         }else{
628             return -1;
629         }
630     }
631 #    endif
632     if(kbhit())
633         return(getch());
634 #endif
635     return -1;
636 }
637
638 static int decode_interrupt_cb(void *ctx)
639 {
640     return received_nb_signals > 1;
641 }
642
643 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
644
645 void av_noreturn exit_program(int ret)
646 {
647     int i;
648
649     /* close files */
650     for(i=0;i<nb_output_files;i++) {
651         AVFormatContext *s = output_files[i].ctx;
652         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
653             avio_close(s->pb);
654         avformat_free_context(s);
655         av_dict_free(&output_files[i].opts);
656     }
657     for(i=0;i<nb_input_files;i++) {
658         av_close_input_file(input_files[i].ctx);
659     }
660     for (i = 0; i < nb_input_streams; i++)
661         av_dict_free(&input_streams[i].opts);
662
663     if (vstats_file)
664         fclose(vstats_file);
665     av_free(vstats_filename);
666
667     av_freep(&input_streams);
668     av_freep(&input_files);
669     av_freep(&output_streams);
670     av_freep(&output_files);
671
672     uninit_opts();
673     av_free(audio_buf);
674     av_free(audio_out);
675     allocated_audio_buf_size= allocated_audio_out_size= 0;
676     av_free(samples);
677
678 #if CONFIG_AVFILTER
679     avfilter_uninit();
680 #endif
681     avformat_network_deinit();
682
683     av_freep(&input_tmp);
684
685     if (received_sigterm) {
686         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
687                (int) received_sigterm);
688         exit (255);
689     }
690
691     exit(ret); /* not all OS-es handle main() return value */
692 }
693
694 static void assert_avoptions(AVDictionary *m)
695 {
696     AVDictionaryEntry *t;
697     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
698         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
699         exit_program(1);
700     }
701 }
702
703 static void assert_codec_experimental(AVCodecContext *c, int encoder)
704 {
705     const char *codec_string = encoder ? "encoder" : "decoder";
706     AVCodec *codec;
707     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
708         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
709         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
710                 "results.\nAdd '-strict experimental' if you want to use it.\n",
711                 codec_string, c->codec->name);
712         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
713         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
714             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
715                    codec_string, codec->name);
716         exit_program(1);
717     }
718 }
719
720 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
721 {
722     if(codec && codec->sample_fmts){
723         const enum AVSampleFormat *p= codec->sample_fmts;
724         for(; *p!=-1; p++){
725             if(*p == st->codec->sample_fmt)
726                 break;
727         }
728         if (*p == -1) {
729             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
730                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
731             if(av_get_sample_fmt_name(st->codec->sample_fmt))
732             av_log(NULL, AV_LOG_WARNING,
733                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
734                    av_get_sample_fmt_name(st->codec->sample_fmt),
735                    codec->name,
736                    av_get_sample_fmt_name(codec->sample_fmts[0]));
737             st->codec->sample_fmt = codec->sample_fmts[0];
738         }
739     }
740 }
741
742 static void choose_sample_rate(AVStream *st, AVCodec *codec)
743 {
744     if(codec && codec->supported_samplerates){
745         const int *p= codec->supported_samplerates;
746         int best=0;
747         int best_dist=INT_MAX;
748         for(; *p; p++){
749             int dist= abs(st->codec->sample_rate - *p);
750             if(dist < best_dist){
751                 best_dist= dist;
752                 best= *p;
753             }
754         }
755         if(best_dist){
756             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
757         }
758         st->codec->sample_rate= best;
759     }
760 }
761
762 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
763 {
764     if(codec && codec->pix_fmts){
765         const enum PixelFormat *p= codec->pix_fmts;
766         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
767             if(st->codec->codec_id==CODEC_ID_MJPEG){
768                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
769             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
770                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
771             }
772         }
773         for (; *p != PIX_FMT_NONE; p++) {
774             if(*p == st->codec->pix_fmt)
775                 break;
776         }
777         if (*p == PIX_FMT_NONE) {
778             if(st->codec->pix_fmt != PIX_FMT_NONE)
779                 av_log(NULL, AV_LOG_WARNING,
780                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
781                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
782                         codec->name,
783                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
784             st->codec->pix_fmt = codec->pix_fmts[0];
785         }
786     }
787 }
788
789 static double get_sync_ipts(const OutputStream *ost)
790 {
791     const InputStream *ist = ost->sync_ist;
792     OutputFile *of = &output_files[ost->file_index];
793     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
794 }
795
796 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
797 {
798     int ret;
799
800     while(bsfc){
801         AVPacket new_pkt= *pkt;
802         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
803                                           &new_pkt.data, &new_pkt.size,
804                                           pkt->data, pkt->size,
805                                           pkt->flags & AV_PKT_FLAG_KEY);
806         if(a>0){
807             av_free_packet(pkt);
808             new_pkt.destruct= av_destruct_packet;
809         } else if(a<0){
810             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
811                    bsfc->filter->name, pkt->stream_index,
812                    avctx->codec ? avctx->codec->name : "copy");
813             print_error("", a);
814             if (exit_on_error)
815                 exit_program(1);
816         }
817         *pkt= new_pkt;
818
819         bsfc= bsfc->next;
820     }
821
822     ret= av_interleaved_write_frame(s, pkt);
823     if(ret < 0){
824         print_error("av_interleaved_write_frame()", ret);
825         exit_program(1);
826     }
827 }
828
829 static void do_audio_out(AVFormatContext *s,
830                          OutputStream *ost,
831                          InputStream *ist,
832                          unsigned char *buf, int size)
833 {
834     uint8_t *buftmp;
835     int64_t audio_out_size, audio_buf_size;
836     int64_t allocated_for_size= size;
837
838     int size_out, frame_bytes, ret, resample_changed;
839     AVCodecContext *enc= ost->st->codec;
840     AVCodecContext *dec= ist->st->codec;
841     int osize = av_get_bytes_per_sample(enc->sample_fmt);
842     int isize = av_get_bytes_per_sample(dec->sample_fmt);
843     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
844
845 need_realloc:
846     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
847     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
848     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
849     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
850     audio_buf_size*= osize*enc->channels;
851
852     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
853     if(coded_bps > 8*osize)
854         audio_out_size= audio_out_size * coded_bps / (8*osize);
855     audio_out_size += FF_MIN_BUFFER_SIZE;
856
857     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
858         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
859         exit_program(1);
860     }
861
862     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
863     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
864     if (!audio_buf || !audio_out){
865         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
866         exit_program(1);
867     }
868
869     if (enc->channels != dec->channels
870      || enc->sample_fmt != dec->sample_fmt)
871         ost->audio_resample = 1;
872
873     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
874                        ost->resample_channels    != dec->channels   ||
875                        ost->resample_sample_rate != dec->sample_rate;
876
877     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
878         if (resample_changed) {
879             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",
880                    ist->file_index, ist->st->index,
881                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
882                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
883             ost->resample_sample_fmt  = dec->sample_fmt;
884             ost->resample_channels    = dec->channels;
885             ost->resample_sample_rate = dec->sample_rate;
886             swr_free(&ost->swr);
887         }
888         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
889         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
890             ost->resample_sample_fmt  == enc->sample_fmt &&
891             ost->resample_channels    == enc->channels   &&
892             ost->resample_sample_rate == enc->sample_rate) {
893             //ost->swr = NULL;
894             ost->audio_resample = 0;
895         } else {
896             ost->swr = swr_alloc_set_opts(ost->swr,
897                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
898                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
899                                           0, NULL);
900             if (ost->audio_channels_mapped)
901                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
902             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
903             if (ost->audio_channels_mapped) {
904                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
905                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
906             }
907             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
908             av_opt_set_int(ost->swr, "och", enc->channels, 0);
909             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
910             if(ost->swr && swr_init(ost->swr) < 0){
911                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
912                 swr_free(&ost->swr);
913             }
914
915             if (!ost->swr) {
916                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
917                         dec->channels, dec->sample_rate,
918                         enc->channels, enc->sample_rate);
919                 exit_program(1);
920             }
921         }
922     }
923
924     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
925
926     if(audio_sync_method){
927         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
928                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
929         double idelta= delta*dec->sample_rate / enc->sample_rate;
930         int byte_delta= ((int)idelta)*2*dec->channels;
931
932         //FIXME resample delay
933         if(fabs(delta) > 50){
934             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
935                 if(byte_delta < 0){
936                     byte_delta= FFMAX(byte_delta, -size);
937                     size += byte_delta;
938                     buf  -= byte_delta;
939                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
940                     if(!size)
941                         return;
942                     ist->is_start=0;
943                 }else{
944                     input_tmp= av_realloc(input_tmp, byte_delta + size);
945
946                     if(byte_delta > allocated_for_size - size){
947                         allocated_for_size= byte_delta + (int64_t)size;
948                         goto need_realloc;
949                     }
950                     ist->is_start=0;
951
952                     memset(input_tmp, 0, byte_delta);
953                     memcpy(input_tmp + byte_delta, buf, size);
954                     buf= input_tmp;
955                     size += byte_delta;
956                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
957                 }
958             }else if(audio_sync_method>1){
959                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
960                 av_assert0(ost->audio_resample);
961                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
962                        delta, comp, enc->sample_rate);
963 //                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));
964                 swr_compensate(ost->swr, comp, enc->sample_rate);
965             }
966         }
967     }else
968         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
969                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
970
971     if (ost->audio_resample) {
972         buftmp = audio_buf;
973         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
974                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
975         size_out = size_out * enc->channels * osize;
976     } else {
977         buftmp = buf;
978         size_out = size;
979     }
980
981     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
982
983     /* now encode as many frames as possible */
984     if (enc->frame_size > 1) {
985         /* output resampled raw samples */
986         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
987             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
988             exit_program(1);
989         }
990         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
991
992         frame_bytes = enc->frame_size * osize * enc->channels;
993
994         while (av_fifo_size(ost->fifo) >= frame_bytes) {
995             AVPacket pkt;
996             av_init_packet(&pkt);
997
998             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
999
1000             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1001
1002             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1003                                        (short *)audio_buf);
1004             if (ret < 0) {
1005                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1006                 exit_program(1);
1007             }
1008             audio_size += ret;
1009             pkt.stream_index= ost->index;
1010             pkt.data= audio_out;
1011             pkt.size= ret;
1012             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1013                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1014             pkt.flags |= AV_PKT_FLAG_KEY;
1015             write_frame(s, &pkt, enc, ost->bitstream_filters);
1016
1017             ost->sync_opts += enc->frame_size;
1018         }
1019     } else {
1020         AVPacket pkt;
1021         av_init_packet(&pkt);
1022
1023         ost->sync_opts += size_out / (osize * enc->channels);
1024
1025         /* output a pcm frame */
1026         /* determine the size of the coded buffer */
1027         size_out /= osize;
1028         if (coded_bps)
1029             size_out = size_out*coded_bps/8;
1030
1031         if(size_out > audio_out_size){
1032             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1033             exit_program(1);
1034         }
1035
1036         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1037         ret = avcodec_encode_audio(enc, audio_out, size_out,
1038                                    (short *)buftmp);
1039         if (ret < 0) {
1040             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1041             exit_program(1);
1042         }
1043         audio_size += ret;
1044         pkt.stream_index= ost->index;
1045         pkt.data= audio_out;
1046         pkt.size= ret;
1047         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1048             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1049         pkt.flags |= AV_PKT_FLAG_KEY;
1050         write_frame(s, &pkt, enc, ost->bitstream_filters);
1051     }
1052 }
1053
1054 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1055 {
1056     AVCodecContext *dec;
1057     AVPicture *picture2;
1058     AVPicture picture_tmp;
1059     uint8_t *buf = 0;
1060
1061     dec = ist->st->codec;
1062
1063     /* deinterlace : must be done before any resize */
1064     if (do_deinterlace) {
1065         int size;
1066
1067         /* create temporary picture */
1068         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1069         buf = av_malloc(size);
1070         if (!buf)
1071             return;
1072
1073         picture2 = &picture_tmp;
1074         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1075
1076         if(avpicture_deinterlace(picture2, picture,
1077                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1078             /* if error, do not deinterlace */
1079             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1080             av_free(buf);
1081             buf = NULL;
1082             picture2 = picture;
1083         }
1084     } else {
1085         picture2 = picture;
1086     }
1087
1088     if (picture != picture2)
1089         *picture = *picture2;
1090     *bufp = buf;
1091 }
1092
1093 static void do_subtitle_out(AVFormatContext *s,
1094                             OutputStream *ost,
1095                             InputStream *ist,
1096                             AVSubtitle *sub,
1097                             int64_t pts)
1098 {
1099     static uint8_t *subtitle_out = NULL;
1100     int subtitle_out_max_size = 1024 * 1024;
1101     int subtitle_out_size, nb, i;
1102     AVCodecContext *enc;
1103     AVPacket pkt;
1104
1105     if (pts == AV_NOPTS_VALUE) {
1106         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1107         if (exit_on_error)
1108             exit_program(1);
1109         return;
1110     }
1111
1112     enc = ost->st->codec;
1113
1114     if (!subtitle_out) {
1115         subtitle_out = av_malloc(subtitle_out_max_size);
1116     }
1117
1118     /* Note: DVB subtitle need one packet to draw them and one other
1119        packet to clear them */
1120     /* XXX: signal it in the codec context ? */
1121     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1122         nb = 2;
1123     else
1124         nb = 1;
1125
1126     for(i = 0; i < nb; i++) {
1127         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1128         // start_display_time is required to be 0
1129         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1130         sub->end_display_time -= sub->start_display_time;
1131         sub->start_display_time = 0;
1132         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1133                                                     subtitle_out_max_size, sub);
1134         if (subtitle_out_size < 0) {
1135             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1136             exit_program(1);
1137         }
1138
1139         av_init_packet(&pkt);
1140         pkt.stream_index = ost->index;
1141         pkt.data = subtitle_out;
1142         pkt.size = subtitle_out_size;
1143         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1144         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1145             /* XXX: the pts correction is handled here. Maybe handling
1146                it in the codec would be better */
1147             if (i == 0)
1148                 pkt.pts += 90 * sub->start_display_time;
1149             else
1150                 pkt.pts += 90 * sub->end_display_time;
1151         }
1152         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1153     }
1154 }
1155
1156 static int bit_buffer_size= 1024*256;
1157 static uint8_t *bit_buffer= NULL;
1158
1159 static void do_video_resample(OutputStream *ost,
1160                               InputStream *ist,
1161                               AVFrame *in_picture,
1162                               AVFrame **out_picture)
1163 {
1164 #if CONFIG_AVFILTER
1165     *out_picture = in_picture;
1166 #else
1167     AVCodecContext *dec = ist->st->codec;
1168     AVCodecContext *enc = ost->st->codec;
1169     int resample_changed = ost->resample_width   != dec->width  ||
1170                            ost->resample_height  != dec->height ||
1171                            ost->resample_pix_fmt != dec->pix_fmt;
1172
1173     *out_picture = in_picture;
1174     if (resample_changed) {
1175         av_log(NULL, AV_LOG_INFO,
1176                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1177                ist->file_index, ist->st->index,
1178                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1179                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1180         ost->resample_width   = dec->width;
1181         ost->resample_height  = dec->height;
1182         ost->resample_pix_fmt = dec->pix_fmt;
1183     }
1184
1185     ost->video_resample = dec->width   != enc->width  ||
1186                           dec->height  != enc->height ||
1187                           dec->pix_fmt != enc->pix_fmt;
1188
1189     if (ost->video_resample) {
1190         *out_picture = &ost->resample_frame;
1191         if (!ost->img_resample_ctx || resample_changed) {
1192             /* initialize the destination picture */
1193             if (!ost->resample_frame.data[0]) {
1194                 avcodec_get_frame_defaults(&ost->resample_frame);
1195                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1196                                     enc->width, enc->height)) {
1197                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1198                     exit_program(1);
1199                 }
1200             }
1201             /* initialize a new scaler context */
1202             sws_freeContext(ost->img_resample_ctx);
1203             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1204                                                    enc->width, enc->height, enc->pix_fmt,
1205                                                    ost->sws_flags, NULL, NULL, NULL);
1206             if (ost->img_resample_ctx == NULL) {
1207                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1208                 exit_program(1);
1209             }
1210         }
1211         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1212               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1213     }
1214 #endif
1215 }
1216
1217
1218 static void do_video_out(AVFormatContext *s,
1219                          OutputStream *ost,
1220                          InputStream *ist,
1221                          AVFrame *in_picture,
1222                          int *frame_size, float quality)
1223 {
1224     int nb_frames, i, ret, format_video_sync;
1225     AVFrame *final_picture;
1226     AVCodecContext *enc;
1227     double sync_ipts;
1228     double duration = 0;
1229
1230     enc = ost->st->codec;
1231
1232     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1233         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1234         if(ist->st->avg_frame_rate.num)
1235             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1236
1237         duration /= av_q2d(enc->time_base);
1238     }
1239
1240     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1241
1242     /* by default, we output a single frame */
1243     nb_frames = 1;
1244
1245     *frame_size = 0;
1246
1247     format_video_sync = video_sync_method;
1248     if (format_video_sync < 0)
1249         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1250                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1251
1252     if (format_video_sync) {
1253         double vdelta = sync_ipts - ost->sync_opts + duration;
1254         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1255         if (vdelta < -1.1)
1256             nb_frames = 0;
1257         else if (format_video_sync == 2) {
1258             if(vdelta<=-0.6){
1259                 nb_frames=0;
1260             }else if(vdelta>0.6)
1261                 ost->sync_opts= lrintf(sync_ipts);
1262         }else if (vdelta > 1.1)
1263             nb_frames = lrintf(vdelta);
1264 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1265         if (nb_frames == 0){
1266             ++nb_frames_drop;
1267             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1268         }else if (nb_frames > 1) {
1269             nb_frames_dup += nb_frames - 1;
1270             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1271         }
1272     }else
1273         ost->sync_opts= lrintf(sync_ipts);
1274
1275     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1276     if (nb_frames <= 0)
1277         return;
1278
1279     do_video_resample(ost, ist, in_picture, &final_picture);
1280
1281     /* duplicates frame if needed */
1282     for(i=0;i<nb_frames;i++) {
1283         AVPacket pkt;
1284         av_init_packet(&pkt);
1285         pkt.stream_index= ost->index;
1286
1287         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1288             /* raw pictures are written as AVPicture structure to
1289                avoid any copies. We support temporarily the older
1290                method. */
1291             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1292             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1293             pkt.data= (uint8_t *)final_picture;
1294             pkt.size=  sizeof(AVPicture);
1295             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1296             pkt.flags |= AV_PKT_FLAG_KEY;
1297
1298             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1299         } else {
1300             AVFrame big_picture;
1301
1302             big_picture= *final_picture;
1303             /* better than nothing: use input picture interlaced
1304                settings */
1305             big_picture.interlaced_frame = in_picture->interlaced_frame;
1306             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1307                 if (ost->top_field_first == -1)
1308                     big_picture.top_field_first = in_picture->top_field_first;
1309                 else
1310                     big_picture.top_field_first = !!ost->top_field_first;
1311             }
1312
1313             /* handles same_quant here. This is not correct because it may
1314                not be a global option */
1315             big_picture.quality = quality;
1316             if (!enc->me_threshold)
1317                 big_picture.pict_type = 0;
1318 //            big_picture.pts = AV_NOPTS_VALUE;
1319             big_picture.pts= ost->sync_opts;
1320 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1321 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1322             if (ost->forced_kf_index < ost->forced_kf_count &&
1323                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1324                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1325                 ost->forced_kf_index++;
1326             }
1327             ret = avcodec_encode_video(enc,
1328                                        bit_buffer, bit_buffer_size,
1329                                        &big_picture);
1330             if (ret < 0) {
1331                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1332                 exit_program(1);
1333             }
1334
1335             if(ret>0){
1336                 pkt.data= bit_buffer;
1337                 pkt.size= ret;
1338                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1339                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1340 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1341    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1342    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1343
1344                 if(enc->coded_frame->key_frame)
1345                     pkt.flags |= AV_PKT_FLAG_KEY;
1346                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1347                 *frame_size = ret;
1348                 video_size += ret;
1349                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1350                 //        enc->frame_number-1, ret, enc->pict_type);
1351                 /* if two pass, output log */
1352                 if (ost->logfile && enc->stats_out) {
1353                     fprintf(ost->logfile, "%s", enc->stats_out);
1354                 }
1355             }
1356         }
1357         ost->sync_opts++;
1358         ost->frame_number++;
1359     }
1360 }
1361
1362 static double psnr(double d)
1363 {
1364     return -10.0*log(d)/log(10.0);
1365 }
1366
1367 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1368                            int frame_size)
1369 {
1370     AVCodecContext *enc;
1371     int frame_number;
1372     double ti1, bitrate, avg_bitrate;
1373
1374     /* this is executed just the first time do_video_stats is called */
1375     if (!vstats_file) {
1376         vstats_file = fopen(vstats_filename, "w");
1377         if (!vstats_file) {
1378             perror("fopen");
1379             exit_program(1);
1380         }
1381     }
1382
1383     enc = ost->st->codec;
1384     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1385         frame_number = ost->frame_number;
1386         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1387         if (enc->flags&CODEC_FLAG_PSNR)
1388             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1389
1390         fprintf(vstats_file,"f_size= %6d ", frame_size);
1391         /* compute pts value */
1392         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1393         if (ti1 < 0.01)
1394             ti1 = 0.01;
1395
1396         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1397         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1398         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1399             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1400         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1401     }
1402 }
1403
1404 static void print_report(OutputFile *output_files,
1405                          OutputStream *ost_table, int nb_ostreams,
1406                          int is_last_report, int64_t timer_start, int64_t cur_time)
1407 {
1408     char buf[1024];
1409     OutputStream *ost;
1410     AVFormatContext *oc;
1411     int64_t total_size;
1412     AVCodecContext *enc;
1413     int frame_number, vid, i;
1414     double bitrate;
1415     int64_t pts = INT64_MAX;
1416     static int64_t last_time = -1;
1417     static int qp_histogram[52];
1418     int hours, mins, secs, us;
1419
1420     if (!print_stats && !is_last_report)
1421         return;
1422
1423     if (!is_last_report) {
1424         if (last_time == -1) {
1425             last_time = cur_time;
1426             return;
1427         }
1428         if ((cur_time - last_time) < 500000)
1429             return;
1430         last_time = cur_time;
1431     }
1432
1433
1434     oc = output_files[0].ctx;
1435
1436     total_size = avio_size(oc->pb);
1437     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1438         total_size= avio_tell(oc->pb);
1439
1440     buf[0] = '\0';
1441     vid = 0;
1442     for(i=0;i<nb_ostreams;i++) {
1443         float q = -1;
1444         ost = &ost_table[i];
1445         enc = ost->st->codec;
1446         if (!ost->stream_copy && enc->coded_frame)
1447             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1448         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1449             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1450         }
1451         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1452             float t = (cur_time-timer_start) / 1000000.0;
1453
1454             frame_number = ost->frame_number;
1455             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1456                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1457             if(is_last_report)
1458                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1459             if(qp_hist){
1460                 int j;
1461                 int qp = lrintf(q);
1462                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1463                     qp_histogram[qp]++;
1464                 for(j=0; j<32; j++)
1465                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1466             }
1467             if (enc->flags&CODEC_FLAG_PSNR){
1468                 int j;
1469                 double error, error_sum=0;
1470                 double scale, scale_sum=0;
1471                 char type[3]= {'Y','U','V'};
1472                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1473                 for(j=0; j<3; j++){
1474                     if(is_last_report){
1475                         error= enc->error[j];
1476                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1477                     }else{
1478                         error= enc->coded_frame->error[j];
1479                         scale= enc->width*enc->height*255.0*255.0;
1480                     }
1481                     if(j) scale/=4;
1482                     error_sum += error;
1483                     scale_sum += scale;
1484                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1485                 }
1486                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1487             }
1488             vid = 1;
1489         }
1490         /* compute min output value */
1491         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1492                                       ost->st->time_base, AV_TIME_BASE_Q));
1493     }
1494
1495     secs = pts / AV_TIME_BASE;
1496     us = pts % AV_TIME_BASE;
1497     mins = secs / 60;
1498     secs %= 60;
1499     hours = mins / 60;
1500     mins %= 60;
1501
1502     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1503
1504     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1505              "size=%8.0fkB time=", total_size / 1024.0);
1506     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1507              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1508              (100 * us) / AV_TIME_BASE);
1509     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1510              "bitrate=%6.1fkbits/s", bitrate);
1511
1512     if (nb_frames_dup || nb_frames_drop)
1513         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1514                 nb_frames_dup, nb_frames_drop);
1515
1516     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1517
1518     fflush(stderr);
1519
1520     if (is_last_report) {
1521         int64_t raw= audio_size + video_size + extra_size;
1522         av_log(NULL, AV_LOG_INFO, "\n");
1523         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1524                video_size/1024.0,
1525                audio_size/1024.0,
1526                extra_size/1024.0,
1527                100.0*(total_size - raw)/raw
1528         );
1529     }
1530 }
1531
1532 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1533 {
1534     int fill_char = 0x00;
1535     if (sample_fmt == AV_SAMPLE_FMT_U8)
1536         fill_char = 0x80;
1537     memset(buf, fill_char, size);
1538 }
1539
1540 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1541 {
1542     int i, ret;
1543
1544     for (i = 0; i < nb_ostreams; i++) {
1545         OutputStream   *ost = &ost_table[i];
1546         AVCodecContext *enc = ost->st->codec;
1547         AVFormatContext *os = output_files[ost->file_index].ctx;
1548
1549         if (!ost->encoding_needed)
1550             continue;
1551
1552         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1553             continue;
1554         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1555             continue;
1556
1557         for(;;) {
1558             AVPacket pkt;
1559             int fifo_bytes;
1560             av_init_packet(&pkt);
1561             pkt.stream_index= ost->index;
1562
1563             switch (ost->st->codec->codec_type) {
1564             case AVMEDIA_TYPE_AUDIO:
1565                 fifo_bytes = av_fifo_size(ost->fifo);
1566                 ret = 0;
1567                 /* encode any samples remaining in fifo */
1568                 if (fifo_bytes > 0) {
1569                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1570                     int fs_tmp = enc->frame_size;
1571
1572                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1573                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1574                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1575                     } else { /* pad */
1576                         int frame_bytes = enc->frame_size*osize*enc->channels;
1577                         if (allocated_audio_buf_size < frame_bytes)
1578                             exit_program(1);
1579                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1580                     }
1581
1582                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1583                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1584                                               ost->st->time_base.num, enc->sample_rate);
1585                     enc->frame_size = fs_tmp;
1586                 }
1587                 if (ret <= 0) {
1588                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1589                 }
1590                 if (ret < 0) {
1591                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1592                     exit_program(1);
1593                 }
1594                 audio_size += ret;
1595                 pkt.flags |= AV_PKT_FLAG_KEY;
1596                 break;
1597             case AVMEDIA_TYPE_VIDEO:
1598                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1599                 if (ret < 0) {
1600                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1601                     exit_program(1);
1602                 }
1603                 video_size += ret;
1604                 if(enc->coded_frame && enc->coded_frame->key_frame)
1605                     pkt.flags |= AV_PKT_FLAG_KEY;
1606                 if (ost->logfile && enc->stats_out) {
1607                     fprintf(ost->logfile, "%s", enc->stats_out);
1608                 }
1609                 break;
1610             default:
1611                 ret=-1;
1612             }
1613
1614             if (ret <= 0)
1615                 break;
1616             pkt.data = bit_buffer;
1617             pkt.size = ret;
1618             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1619                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1620             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1621         }
1622     }
1623 }
1624
1625 /*
1626  * Check whether a packet from ist should be written into ost at this time
1627  */
1628 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1629 {
1630     OutputFile *of = &output_files[ost->file_index];
1631     int ist_index  = ist - input_streams;
1632
1633     if (ost->source_index != ist_index)
1634         return 0;
1635
1636     if (of->start_time && ist->pts < of->start_time)
1637         return 0;
1638
1639     if (of->recording_time != INT64_MAX &&
1640         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1641                       (AVRational){1, 1000000}) >= 0) {
1642         ost->is_past_recording_time = 1;
1643         return 0;
1644     }
1645
1646     return 1;
1647 }
1648
1649 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1650 {
1651     OutputFile *of = &output_files[ost->file_index];
1652     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1653     AVPicture pict;
1654     AVPacket opkt;
1655
1656     av_init_packet(&opkt);
1657
1658     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1659         !ost->copy_initial_nonkeyframes)
1660         return;
1661
1662     /* force the input stream PTS */
1663     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1664         audio_size += pkt->size;
1665     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1666         video_size += pkt->size;
1667         ost->sync_opts++;
1668     }
1669
1670     opkt.stream_index = ost->index;
1671     if (pkt->pts != AV_NOPTS_VALUE)
1672         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1673     else
1674         opkt.pts = AV_NOPTS_VALUE;
1675
1676     if (pkt->dts == AV_NOPTS_VALUE)
1677         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1678     else
1679         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1680     opkt.dts -= ost_tb_start_time;
1681
1682     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1683     opkt.flags    = pkt->flags;
1684
1685     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1686     if(   ost->st->codec->codec_id != CODEC_ID_H264
1687        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1688        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1689        ) {
1690         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1691             opkt.destruct = av_destruct_packet;
1692     } else {
1693         opkt.data = pkt->data;
1694         opkt.size = pkt->size;
1695     }
1696     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1697         /* store AVPicture in AVPacket, as expected by the output format */
1698         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1699         opkt.data = (uint8_t *)&pict;
1700         opkt.size = sizeof(AVPicture);
1701         opkt.flags |= AV_PKT_FLAG_KEY;
1702     }
1703
1704     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1705     ost->st->codec->frame_number++;
1706     ost->frame_number++;
1707     av_free_packet(&opkt);
1708 }
1709
1710 static void rate_emu_sleep(InputStream *ist)
1711 {
1712     if (input_files[ist->file_index].rate_emu) {
1713         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1714         int64_t now = av_gettime() - ist->start;
1715         if (pts > now)
1716             usleep(pts - now);
1717     }
1718 }
1719
1720 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1721 {
1722     static unsigned int samples_size = 0;
1723     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1724     uint8_t *decoded_data_buf  = NULL;
1725     int      decoded_data_size = 0;
1726     int i, ret;
1727
1728     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1729         av_free(samples);
1730         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1731         samples      = av_malloc(samples_size);
1732     }
1733     decoded_data_size = samples_size;
1734
1735     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1736                                 pkt);
1737     if (ret < 0)
1738         return ret;
1739     *got_output  = decoded_data_size > 0;
1740
1741     /* Some bug in mpeg audio decoder gives */
1742     /* decoded_data_size < 0, it seems they are overflows */
1743     if (!*got_output) {
1744         /* no audio frame */
1745         return ret;
1746     }
1747
1748     decoded_data_buf = (uint8_t *)samples;
1749     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1750                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1751
1752     // preprocess audio (volume)
1753     if (audio_volume != 256) {
1754         switch (ist->st->codec->sample_fmt) {
1755         case AV_SAMPLE_FMT_U8:
1756         {
1757             uint8_t *volp = samples;
1758             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1759                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1760                 *volp++ = av_clip_uint8(v);
1761             }
1762             break;
1763         }
1764         case AV_SAMPLE_FMT_S16:
1765         {
1766             int16_t *volp = samples;
1767             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1768                 int v = ((*volp) * audio_volume + 128) >> 8;
1769                 *volp++ = av_clip_int16(v);
1770             }
1771             break;
1772         }
1773         case AV_SAMPLE_FMT_S32:
1774         {
1775             int32_t *volp = samples;
1776             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1777                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1778                 *volp++ = av_clipl_int32(v);
1779             }
1780             break;
1781         }
1782         case AV_SAMPLE_FMT_FLT:
1783         {
1784             float *volp = samples;
1785             float scale = audio_volume / 256.f;
1786             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1787                 *volp++ *= scale;
1788             }
1789             break;
1790         }
1791         case AV_SAMPLE_FMT_DBL:
1792         {
1793             double *volp = samples;
1794             double scale = audio_volume / 256.;
1795             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1796                 *volp++ *= scale;
1797             }
1798             break;
1799         }
1800         default:
1801             av_log(NULL, AV_LOG_FATAL,
1802                    "Audio volume adjustment on sample format %s is not supported.\n",
1803                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1804             exit_program(1);
1805         }
1806     }
1807
1808     rate_emu_sleep(ist);
1809
1810     for (i = 0; i < nb_output_streams; i++) {
1811         OutputStream *ost = &output_streams[i];
1812
1813         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1814             continue;
1815         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1816                      decoded_data_buf, decoded_data_size);
1817     }
1818     return ret;
1819 }
1820
1821 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1822 {
1823     AVFrame *decoded_frame, *filtered_frame = NULL;
1824     void *buffer_to_free = NULL;
1825     int i, ret = 0;
1826     float quality = 0;
1827 #if CONFIG_AVFILTER
1828     int frame_available = 1;
1829 #endif
1830
1831     if (!(decoded_frame = avcodec_alloc_frame()))
1832         return AVERROR(ENOMEM);
1833     pkt->pts  = *pkt_pts;
1834     pkt->dts  = *pkt_dts;
1835     *pkt_pts  = AV_NOPTS_VALUE;
1836
1837     if(*pkt_dts != AV_NOPTS_VALUE && ist->st->codec->time_base.num != 0) {
1838         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1839         *pkt_dts += ((int64_t)AV_TIME_BASE *
1840                           ist->st->codec->time_base.num * ticks) /
1841             ist->st->codec->time_base.den;
1842     }else
1843         *pkt_dts = AV_NOPTS_VALUE;
1844
1845     ret = avcodec_decode_video2(ist->st->codec,
1846                                 decoded_frame, got_output, pkt);
1847     if (ret < 0)
1848         goto fail;
1849
1850     quality = same_quant ? decoded_frame->quality : 0;
1851     if (!*got_output) {
1852         /* no picture yet */
1853         av_freep(&decoded_frame);
1854         return ret;
1855     }
1856
1857     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1858         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1859
1860     if (ist->st->codec->time_base.num != 0) {
1861         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1862                                            ist->st->codec->ticks_per_frame;
1863         ist->next_pts += ((int64_t)AV_TIME_BASE *
1864                           ist->st->codec->time_base.num * ticks) /
1865                           ist->st->codec->time_base.den;
1866     }
1867     pkt->size = 0;
1868
1869     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1870
1871 #if CONFIG_AVFILTER
1872     for(i=0;i<nb_output_streams;i++) {
1873         OutputStream *ost = ost = &output_streams[i];
1874         if(check_output_constraints(ist, ost)){
1875             if (!decoded_frame->sample_aspect_ratio.num)
1876                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1877             decoded_frame->pts = ist->pts;
1878
1879             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1880         }
1881     }
1882 #endif
1883
1884     rate_emu_sleep(ist);
1885
1886     for (i = 0; i < nb_output_streams; i++) {
1887         OutputStream *ost = &output_streams[i];
1888         int frame_size;
1889
1890         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1891             continue;
1892
1893 #if CONFIG_AVFILTER
1894         if (ost->input_video_filter) {
1895             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1896         }
1897         while (frame_available) {
1898             if (ost->output_video_filter) {
1899                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1900                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1901                     goto cont;
1902                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1903                     ret = AVERROR(ENOMEM);
1904                     goto fail;
1905                 }
1906                 *filtered_frame= *decoded_frame; //for me_threshold
1907                 if (ost->picref) {
1908                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1909                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1910                 }
1911             }
1912             if (ost->picref->video && !ost->frame_aspect_ratio)
1913                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1914 #else
1915             filtered_frame = decoded_frame;
1916 #endif
1917
1918             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1919                          same_quant ? quality : ost->st->codec->global_quality);
1920             if (vstats_filename && frame_size)
1921                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1922 #if CONFIG_AVFILTER
1923             cont:
1924             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1925             avfilter_unref_buffer(ost->picref);
1926         }
1927         av_freep(&filtered_frame);
1928 #endif
1929     }
1930
1931 fail:
1932     av_free(buffer_to_free);
1933     av_freep(&decoded_frame);
1934     return ret;
1935 }
1936
1937 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1938 {
1939     AVSubtitle subtitle;
1940     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1941                                           &subtitle, got_output, pkt);
1942     if (ret < 0)
1943         return ret;
1944     if (!*got_output)
1945         return ret;
1946
1947     rate_emu_sleep(ist);
1948
1949     for (i = 0; i < nb_output_streams; i++) {
1950         OutputStream *ost = &output_streams[i];
1951
1952         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1953             continue;
1954
1955         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1956     }
1957
1958     avsubtitle_free(&subtitle);
1959     return ret;
1960 }
1961
1962 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1963 static int output_packet(InputStream *ist,
1964                          OutputStream *ost_table, int nb_ostreams,
1965                          const AVPacket *pkt)
1966 {
1967     int ret = 0, i;
1968     int got_output;
1969     int64_t pkt_dts = AV_NOPTS_VALUE;
1970     int64_t pkt_pts = AV_NOPTS_VALUE;
1971
1972     AVPacket avpkt;
1973
1974     if (ist->next_pts == AV_NOPTS_VALUE)
1975         ist->next_pts = ist->pts;
1976
1977     if (pkt == NULL) {
1978         /* EOF handling */
1979         av_init_packet(&avpkt);
1980         avpkt.data = NULL;
1981         avpkt.size = 0;
1982         goto handle_eof;
1983     } else {
1984         avpkt = *pkt;
1985     }
1986
1987     if(pkt->dts != AV_NOPTS_VALUE){
1988         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1989             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1990         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1991     }
1992     if(pkt->pts != AV_NOPTS_VALUE)
1993         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1994
1995     //while we have more to decode or while the decoder did output something on EOF
1996     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1997     handle_eof:
1998
1999         ist->pts = ist->next_pts;
2000
2001         if (avpkt.size && avpkt.size != pkt->size) {
2002             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2003                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2004             ist->showed_multi_packet_warning = 1;
2005         }
2006
2007         switch(ist->st->codec->codec_type) {
2008         case AVMEDIA_TYPE_AUDIO:
2009             ret = transcode_audio    (ist, &avpkt, &got_output);
2010             break;
2011         case AVMEDIA_TYPE_VIDEO:
2012             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2013             break;
2014         case AVMEDIA_TYPE_SUBTITLE:
2015             ret = transcode_subtitles(ist, &avpkt, &got_output);
2016             break;
2017         default:
2018             return -1;
2019         }
2020
2021         if (ret < 0)
2022             return ret;
2023         // touch data and size only if not EOF
2024         if (pkt) {
2025             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2026                 ret = avpkt.size;
2027             avpkt.data += ret;
2028             avpkt.size -= ret;
2029         }
2030         if (!got_output) {
2031             continue;
2032         }
2033     }
2034
2035     /* handle stream copy */
2036     if (!ist->decoding_needed) {
2037         rate_emu_sleep(ist);
2038         switch (ist->st->codec->codec_type) {
2039         case AVMEDIA_TYPE_AUDIO:
2040             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2041                              ist->st->codec->sample_rate;
2042             break;
2043         case AVMEDIA_TYPE_VIDEO:
2044             if (ist->st->codec->time_base.num != 0) {
2045                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2046                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2047                                   ist->st->codec->time_base.num * ticks) /
2048                                   ist->st->codec->time_base.den;
2049             }
2050             break;
2051         }
2052     }
2053     for (i = 0; pkt && i < nb_ostreams; i++) {
2054         OutputStream *ost = &ost_table[i];
2055
2056         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2057             continue;
2058
2059         do_streamcopy(ist, ost, pkt);
2060     }
2061
2062     return 0;
2063 }
2064
2065 static void print_sdp(OutputFile *output_files, int n)
2066 {
2067     char sdp[2048];
2068     int i;
2069     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2070
2071     if (!avc)
2072         exit_program(1);
2073     for (i = 0; i < n; i++)
2074         avc[i] = output_files[i].ctx;
2075
2076     av_sdp_create(avc, n, sdp, sizeof(sdp));
2077     printf("SDP:\n%s\n", sdp);
2078     fflush(stdout);
2079     av_freep(&avc);
2080 }
2081
2082 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2083                              char *error, int error_len)
2084 {
2085     InputStream *ist = &input_streams[ist_index];
2086     if (ist->decoding_needed) {
2087         AVCodec *codec = ist->dec;
2088         if (!codec) {
2089             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2090                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2091             return AVERROR(EINVAL);
2092         }
2093         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2094             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2095                     ist->file_index, ist->st->index);
2096             return AVERROR(EINVAL);
2097         }
2098         assert_codec_experimental(ist->st->codec, 0);
2099         assert_avoptions(ist->opts);
2100     }
2101
2102     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2103     ist->next_pts = AV_NOPTS_VALUE;
2104     ist->is_start = 1;
2105
2106     return 0;
2107 }
2108
2109 static int transcode_init(OutputFile *output_files, int nb_output_files,
2110                           InputFile  *input_files,  int nb_input_files)
2111 {
2112     int ret = 0, i, j, k;
2113     AVFormatContext *oc;
2114     AVCodecContext *codec, *icodec;
2115     OutputStream *ost;
2116     InputStream *ist;
2117     char error[1024];
2118     int want_sdp = 1;
2119
2120     /* init framerate emulation */
2121     for (i = 0; i < nb_input_files; i++) {
2122         InputFile *ifile = &input_files[i];
2123         if (ifile->rate_emu)
2124             for (j = 0; j < ifile->nb_streams; j++)
2125                 input_streams[j + ifile->ist_index].start = av_gettime();
2126     }
2127
2128     /* output stream init */
2129     for (i = 0; i < nb_output_files; i++) {
2130         oc = output_files[i].ctx;
2131         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2132             av_dump_format(oc, i, oc->filename, 1);
2133             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2134             return AVERROR(EINVAL);
2135         }
2136     }
2137
2138     /* for each output stream, we compute the right encoding parameters */
2139     for (i = 0; i < nb_output_streams; i++) {
2140         ost = &output_streams[i];
2141         oc  = output_files[ost->file_index].ctx;
2142         ist = &input_streams[ost->source_index];
2143
2144         if (ost->attachment_filename)
2145             continue;
2146
2147         codec  = ost->st->codec;
2148         icodec = ist->st->codec;
2149
2150         ost->st->disposition          = ist->st->disposition;
2151         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2152         codec->chroma_sample_location = icodec->chroma_sample_location;
2153
2154         if (ost->stream_copy) {
2155             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2156
2157             if (extra_size > INT_MAX) {
2158                 return AVERROR(EINVAL);
2159             }
2160
2161             /* if stream_copy is selected, no need to decode or encode */
2162             codec->codec_id   = icodec->codec_id;
2163             codec->codec_type = icodec->codec_type;
2164
2165             if (!codec->codec_tag) {
2166                 if (!oc->oformat->codec_tag ||
2167                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2168                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2169                     codec->codec_tag = icodec->codec_tag;
2170             }
2171
2172             codec->bit_rate       = icodec->bit_rate;
2173             codec->rc_max_rate    = icodec->rc_max_rate;
2174             codec->rc_buffer_size = icodec->rc_buffer_size;
2175             codec->extradata      = av_mallocz(extra_size);
2176             if (!codec->extradata) {
2177                 return AVERROR(ENOMEM);
2178             }
2179             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2180             codec->extradata_size= icodec->extradata_size;
2181
2182             codec->time_base = ist->st->time_base;
2183             if(!strcmp(oc->oformat->name, "avi")) {
2184                 if (!copy_tb &&
2185                     av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) &&
2186                     av_q2d(ist->st->time_base) < 1.0/500){
2187                     codec->time_base = icodec->time_base;
2188                     codec->time_base.num *= icodec->ticks_per_frame;
2189                     codec->time_base.den *= 2;
2190                 }
2191             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
2192                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2193                     codec->time_base = icodec->time_base;
2194                     codec->time_base.num *= icodec->ticks_per_frame;
2195                 }
2196             }
2197             av_reduce(&codec->time_base.num, &codec->time_base.den,
2198                         codec->time_base.num, codec->time_base.den, INT_MAX);
2199
2200             switch(codec->codec_type) {
2201             case AVMEDIA_TYPE_AUDIO:
2202                 if(audio_volume != 256) {
2203                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2204                     exit_program(1);
2205                 }
2206                 codec->channel_layout     = icodec->channel_layout;
2207                 codec->sample_rate        = icodec->sample_rate;
2208                 codec->channels           = icodec->channels;
2209                 codec->frame_size         = icodec->frame_size;
2210                 codec->audio_service_type = icodec->audio_service_type;
2211                 codec->block_align        = icodec->block_align;
2212                 break;
2213             case AVMEDIA_TYPE_VIDEO:
2214                 codec->pix_fmt            = icodec->pix_fmt;
2215                 codec->width              = icodec->width;
2216                 codec->height             = icodec->height;
2217                 codec->has_b_frames       = icodec->has_b_frames;
2218                 if (!codec->sample_aspect_ratio.num) {
2219                     codec->sample_aspect_ratio   =
2220                     ost->st->sample_aspect_ratio =
2221                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2222                         ist->st->codec->sample_aspect_ratio.num ?
2223                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2224                 }
2225                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2226                 break;
2227             case AVMEDIA_TYPE_SUBTITLE:
2228                 codec->width  = icodec->width;
2229                 codec->height = icodec->height;
2230                 break;
2231             case AVMEDIA_TYPE_DATA:
2232             case AVMEDIA_TYPE_ATTACHMENT:
2233                 break;
2234             default:
2235                 abort();
2236             }
2237         } else {
2238             if (!ost->enc)
2239                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2240
2241             ist->decoding_needed = 1;
2242             ost->encoding_needed = 1;
2243
2244             switch(codec->codec_type) {
2245             case AVMEDIA_TYPE_AUDIO:
2246                 ost->fifo = av_fifo_alloc(1024);
2247                 if (!ost->fifo) {
2248                     return AVERROR(ENOMEM);
2249                 }
2250                 if (!codec->sample_rate)
2251                     codec->sample_rate = icodec->sample_rate;
2252                 choose_sample_rate(ost->st, ost->enc);
2253                 codec->time_base = (AVRational){1, codec->sample_rate};
2254
2255                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2256                     codec->sample_fmt = icodec->sample_fmt;
2257                 choose_sample_fmt(ost->st, ost->enc);
2258
2259                 if (ost->audio_channels_mapped) {
2260                     /* the requested output channel is set to the number of
2261                      * -map_channel only if no -ac are specified */
2262                     if (!codec->channels) {
2263                         codec->channels       = ost->audio_channels_mapped;
2264                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2265                         if (!codec->channel_layout) {
2266                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2267                             exit_program(1);
2268                         }
2269                     }
2270                     /* fill unused channel mapping with -1 (which means a muted
2271                      * channel in case the number of output channels is bigger
2272                      * than the number of mapped channel) */
2273                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2274                         ost->audio_channels_map[j] = -1;
2275                 } else if (!codec->channels) {
2276                     codec->channels = icodec->channels;
2277                     codec->channel_layout = icodec->channel_layout;
2278                 }
2279                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2280                     codec->channel_layout = 0;
2281
2282                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2283                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2284                                             || codec->channel_layout != icodec->channel_layout;
2285                 icodec->request_channels  = codec->channels;
2286                 ost->resample_sample_fmt  = icodec->sample_fmt;
2287                 ost->resample_sample_rate = icodec->sample_rate;
2288                 ost->resample_channels    = icodec->channels;
2289                 break;
2290             case AVMEDIA_TYPE_VIDEO:
2291                 if (codec->pix_fmt == PIX_FMT_NONE)
2292                     codec->pix_fmt = icodec->pix_fmt;
2293                 choose_pixel_fmt(ost->st, ost->enc);
2294
2295                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2296                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2297                     exit_program(1);
2298                 }
2299
2300                 if (!codec->width || !codec->height) {
2301                     codec->width  = icodec->width;
2302                     codec->height = icodec->height;
2303                 }
2304
2305                 ost->video_resample = codec->width   != icodec->width  ||
2306                                       codec->height  != icodec->height ||
2307                                       codec->pix_fmt != icodec->pix_fmt;
2308                 if (ost->video_resample) {
2309                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2310                 }
2311
2312                 ost->resample_height  = icodec->height;
2313                 ost->resample_width   = icodec->width;
2314                 ost->resample_pix_fmt = icodec->pix_fmt;
2315
2316                 if (!ost->frame_rate.num)
2317                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2318                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2319                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2320                     ost->frame_rate = ost->enc->supported_framerates[idx];
2321                 }
2322                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2323                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2324                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2325                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2326                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2327                 }
2328                 for (j = 0; j < ost->forced_kf_count; j++)
2329                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2330                                                          AV_TIME_BASE_Q,
2331                                                          codec->time_base);
2332
2333 #if CONFIG_AVFILTER
2334                 if (configure_video_filters(ist, ost)) {
2335                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2336                     exit(1);
2337                 }
2338 #endif
2339                 break;
2340             case AVMEDIA_TYPE_SUBTITLE:
2341                 break;
2342             default:
2343                 abort();
2344                 break;
2345             }
2346             /* two pass mode */
2347             if (codec->codec_id != CODEC_ID_H264 &&
2348                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2349                 char logfilename[1024];
2350                 FILE *f;
2351
2352                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2353                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2354                          i);
2355                 if (codec->flags & CODEC_FLAG_PASS2) {
2356                     char  *logbuffer;
2357                     size_t logbuffer_size;
2358                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2359                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2360                                logfilename);
2361                         exit_program(1);
2362                     }
2363                     codec->stats_in = logbuffer;
2364                 }
2365                 if (codec->flags & CODEC_FLAG_PASS1) {
2366                     f = fopen(logfilename, "wb");
2367                     if (!f) {
2368                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2369                                logfilename, strerror(errno));
2370                         exit_program(1);
2371                     }
2372                     ost->logfile = f;
2373                 }
2374             }
2375         }
2376         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2377             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2378             int size        = codec->width * codec->height;
2379             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2380         }
2381     }
2382
2383     if (!bit_buffer)
2384         bit_buffer = av_malloc(bit_buffer_size);
2385     if (!bit_buffer) {
2386         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2387                bit_buffer_size);
2388         return AVERROR(ENOMEM);
2389     }
2390
2391     /* open each encoder */
2392     for (i = 0; i < nb_output_streams; i++) {
2393         ost = &output_streams[i];
2394         if (ost->encoding_needed) {
2395             AVCodec      *codec = ost->enc;
2396             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2397             if (!codec) {
2398                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2399                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2400                 ret = AVERROR(EINVAL);
2401                 goto dump_format;
2402             }
2403             if (dec->subtitle_header) {
2404                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2405                 if (!ost->st->codec->subtitle_header) {
2406                     ret = AVERROR(ENOMEM);
2407                     goto dump_format;
2408                 }
2409                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2410                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2411             }
2412             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2413                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2414                         ost->file_index, ost->index);
2415                 ret = AVERROR(EINVAL);
2416                 goto dump_format;
2417             }
2418             assert_codec_experimental(ost->st->codec, 1);
2419             assert_avoptions(ost->opts);
2420             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2421                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2422                                              " It takes bits/s as argument, not kbits/s\n");
2423             extra_size += ost->st->codec->extradata_size;
2424
2425             if (ost->st->codec->me_threshold)
2426                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2427         }
2428     }
2429
2430     /* init input streams */
2431     for (i = 0; i < nb_input_streams; i++)
2432         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2433             goto dump_format;
2434
2435     /* discard unused programs */
2436     for (i = 0; i < nb_input_files; i++) {
2437         InputFile *ifile = &input_files[i];
2438         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2439             AVProgram *p = ifile->ctx->programs[j];
2440             int discard  = AVDISCARD_ALL;
2441
2442             for (k = 0; k < p->nb_stream_indexes; k++)
2443                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2444                     discard = AVDISCARD_DEFAULT;
2445                     break;
2446                 }
2447             p->discard = discard;
2448         }
2449     }
2450
2451     /* open files and write file headers */
2452     for (i = 0; i < nb_output_files; i++) {
2453         oc = output_files[i].ctx;
2454         oc->interrupt_callback = int_cb;
2455         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2456             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2457             ret = AVERROR(EINVAL);
2458             goto dump_format;
2459         }
2460 //        assert_avoptions(output_files[i].opts);
2461         if (strcmp(oc->oformat->name, "rtp")) {
2462             want_sdp = 0;
2463         }
2464     }
2465
2466  dump_format:
2467     /* dump the file output parameters - cannot be done before in case
2468        of stream copy */
2469     for (i = 0; i < nb_output_files; i++) {
2470         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2471     }
2472
2473     /* dump the stream mapping */
2474     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2475     for (i = 0; i < nb_output_streams; i++) {
2476         ost = &output_streams[i];
2477
2478         if (ost->attachment_filename) {
2479             /* an attached file */
2480             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2481                    ost->attachment_filename, ost->file_index, ost->index);
2482             continue;
2483         }
2484         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2485                input_streams[ost->source_index].file_index,
2486                input_streams[ost->source_index].st->index,
2487                ost->file_index,
2488                ost->index);
2489         if (ost->audio_channels_mapped) {
2490             av_log(NULL, AV_LOG_INFO, " [ch:");
2491             for (j = 0; j < ost->audio_channels_mapped; j++)
2492                 if (ost->audio_channels_map[j] == -1)
2493                     av_log(NULL, AV_LOG_INFO, " M");
2494                 else
2495                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2496             av_log(NULL, AV_LOG_INFO, "]");
2497         }
2498         if (ost->sync_ist != &input_streams[ost->source_index])
2499             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2500                    ost->sync_ist->file_index,
2501                    ost->sync_ist->st->index);
2502         if (ost->stream_copy)
2503             av_log(NULL, AV_LOG_INFO, " (copy)");
2504         else
2505             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2506                    input_streams[ost->source_index].dec->name : "?",
2507                    ost->enc ? ost->enc->name : "?");
2508         av_log(NULL, AV_LOG_INFO, "\n");
2509     }
2510
2511     if (ret) {
2512         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2513         return ret;
2514     }
2515
2516     if (want_sdp) {
2517         print_sdp(output_files, nb_output_files);
2518     }
2519
2520     return 0;
2521 }
2522
2523 /*
2524  * The following code is the main loop of the file converter
2525  */
2526 static int transcode(OutputFile *output_files, int nb_output_files,
2527                      InputFile  *input_files,  int nb_input_files)
2528 {
2529     int ret, i;
2530     AVFormatContext *is, *os;
2531     OutputStream *ost;
2532     InputStream *ist;
2533     uint8_t *no_packet;
2534     int no_packet_count=0;
2535     int64_t timer_start;
2536     int key;
2537
2538     if (!(no_packet = av_mallocz(nb_input_files)))
2539         exit_program(1);
2540
2541     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2542     if (ret < 0)
2543         goto fail;
2544
2545     if (!using_stdin) {
2546         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2547     }
2548
2549     timer_start = av_gettime();
2550
2551     for(; received_sigterm == 0;) {
2552         int file_index, ist_index;
2553         AVPacket pkt;
2554         int64_t ipts_min;
2555         double opts_min;
2556         int64_t cur_time= av_gettime();
2557
2558         ipts_min= INT64_MAX;
2559         opts_min= 1e100;
2560         /* if 'q' pressed, exits */
2561         if (!using_stdin) {
2562             static int64_t last_time;
2563             if (received_nb_signals)
2564                 break;
2565             /* read_key() returns 0 on EOF */
2566             if(cur_time - last_time >= 100000 && !run_as_daemon){
2567                 key =  read_key();
2568                 last_time = cur_time;
2569             }else
2570                 key = -1;
2571             if (key == 'q')
2572                 break;
2573             if (key == '+') av_log_set_level(av_log_get_level()+10);
2574             if (key == '-') av_log_set_level(av_log_get_level()-10);
2575             if (key == 's') qp_hist     ^= 1;
2576             if (key == 'h'){
2577                 if (do_hex_dump){
2578                     do_hex_dump = do_pkt_dump = 0;
2579                 } else if(do_pkt_dump){
2580                     do_hex_dump = 1;
2581                 } else
2582                     do_pkt_dump = 1;
2583                 av_log_set_level(AV_LOG_DEBUG);
2584             }
2585 #if CONFIG_AVFILTER
2586             if (key == 'c' || key == 'C'){
2587                 char buf[4096], target[64], command[256], arg[256] = {0};
2588                 double time;
2589                 int k, n = 0;
2590                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2591                 i = 0;
2592                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2593                     if (k > 0)
2594                         buf[i++] = k;
2595                 buf[i] = 0;
2596                 if (k > 0 &&
2597                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2598                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2599                            target, time, command, arg);
2600                     for (i = 0; i < nb_output_streams; i++) {
2601                         ost = &output_streams[i];
2602                         if (ost->graph) {
2603                             if (time < 0) {
2604                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2605                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2606                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2607                             } else {
2608                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2609                             }
2610                         }
2611                     }
2612                 } else {
2613                     av_log(NULL, AV_LOG_ERROR,
2614                            "Parse error, at least 3 arguments were expected, "
2615                            "only %d given in string '%s'\n", n, buf);
2616                 }
2617             }
2618 #endif
2619             if (key == 'd' || key == 'D'){
2620                 int debug=0;
2621                 if(key == 'D') {
2622                     debug = input_streams[0].st->codec->debug<<1;
2623                     if(!debug) debug = 1;
2624                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2625                         debug += debug;
2626                 }else
2627                     if(scanf("%d", &debug)!=1)
2628                         fprintf(stderr,"error parsing debug value\n");
2629                 for(i=0;i<nb_input_streams;i++) {
2630                     input_streams[i].st->codec->debug = debug;
2631                 }
2632                 for(i=0;i<nb_output_streams;i++) {
2633                     ost = &output_streams[i];
2634                     ost->st->codec->debug = debug;
2635                 }
2636                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2637                 fprintf(stderr,"debug=%d\n", debug);
2638             }
2639             if (key == '?'){
2640                 fprintf(stderr, "key    function\n"
2641                                 "?      show this help\n"
2642                                 "+      increase verbosity\n"
2643                                 "-      decrease verbosity\n"
2644                                 "c      Send command to filtergraph\n"
2645                                 "D      cycle through available debug modes\n"
2646                                 "h      dump packets/hex press to cycle through the 3 states\n"
2647                                 "q      quit\n"
2648                                 "s      Show QP histogram\n"
2649                 );
2650             }
2651         }
2652
2653         /* select the stream that we must read now by looking at the
2654            smallest output pts */
2655         file_index = -1;
2656         for (i = 0; i < nb_output_streams; i++) {
2657             OutputFile *of;
2658             int64_t ipts;
2659             double  opts;
2660             ost = &output_streams[i];
2661             of = &output_files[ost->file_index];
2662             os = output_files[ost->file_index].ctx;
2663             ist = &input_streams[ost->source_index];
2664             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2665                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2666                 continue;
2667             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2668             ipts = ist->pts;
2669             if (!input_files[ist->file_index].eof_reached){
2670                 if(ipts < ipts_min) {
2671                     ipts_min = ipts;
2672                     if(input_sync ) file_index = ist->file_index;
2673                 }
2674                 if(opts < opts_min) {
2675                     opts_min = opts;
2676                     if(!input_sync) file_index = ist->file_index;
2677                 }
2678             }
2679             if (ost->frame_number >= ost->max_frames) {
2680                 int j;
2681                 for (j = 0; j < of->ctx->nb_streams; j++)
2682                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2683                 continue;
2684             }
2685         }
2686         /* if none, if is finished */
2687         if (file_index < 0) {
2688             if(no_packet_count){
2689                 no_packet_count=0;
2690                 memset(no_packet, 0, nb_input_files);
2691                 usleep(10000);
2692                 continue;
2693             }
2694             break;
2695         }
2696
2697         /* read a frame from it and output it in the fifo */
2698         is = input_files[file_index].ctx;
2699         ret= av_read_frame(is, &pkt);
2700         if(ret == AVERROR(EAGAIN)){
2701             no_packet[file_index]=1;
2702             no_packet_count++;
2703             continue;
2704         }
2705         if (ret < 0) {
2706             input_files[file_index].eof_reached = 1;
2707             if (opt_shortest)
2708                 break;
2709             else
2710                 continue;
2711         }
2712
2713         no_packet_count=0;
2714         memset(no_packet, 0, nb_input_files);
2715
2716         if (do_pkt_dump) {
2717             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2718                              is->streams[pkt.stream_index]);
2719         }
2720         /* the following test is needed in case new streams appear
2721            dynamically in stream : we ignore them */
2722         if (pkt.stream_index >= input_files[file_index].nb_streams)
2723             goto discard_packet;
2724         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2725         ist = &input_streams[ist_index];
2726         if (ist->discard)
2727             goto discard_packet;
2728
2729         if (pkt.dts != AV_NOPTS_VALUE)
2730             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2731         if (pkt.pts != AV_NOPTS_VALUE)
2732             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2733
2734         if(pkt.pts != AV_NOPTS_VALUE)
2735             pkt.pts *= ist->ts_scale;
2736         if(pkt.dts != AV_NOPTS_VALUE)
2737             pkt.dts *= ist->ts_scale;
2738
2739 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2740         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2741             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2742             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2743             int64_t delta= pkt_dts - ist->next_pts;
2744             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2745                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2746                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2747                 pkt_dts+1<ist->pts)&& !copy_ts){
2748                 input_files[ist->file_index].ts_offset -= delta;
2749                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2750                        delta, input_files[ist->file_index].ts_offset);
2751                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2752                 if(pkt.pts != AV_NOPTS_VALUE)
2753                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2754             }
2755         }
2756
2757         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2758         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2759
2760             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2761                    ist->file_index, ist->st->index);
2762             if (exit_on_error)
2763                 exit_program(1);
2764             av_free_packet(&pkt);
2765             continue;
2766         }
2767
2768     discard_packet:
2769         av_free_packet(&pkt);
2770
2771         /* dump report by using the output first video and audio streams */
2772         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2773     }
2774
2775     /* at the end of stream, we must flush the decoder buffers */
2776     for (i = 0; i < nb_input_streams; i++) {
2777         ist = &input_streams[i];
2778         if (ist->decoding_needed) {
2779             output_packet(ist, output_streams, nb_output_streams, NULL);
2780         }
2781     }
2782     flush_encoders(output_streams, nb_output_streams);
2783
2784     term_exit();
2785
2786     /* write the trailer if needed and close file */
2787     for(i=0;i<nb_output_files;i++) {
2788         os = output_files[i].ctx;
2789         av_write_trailer(os);
2790     }
2791
2792     /* dump report by using the first video and audio streams */
2793     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2794
2795     /* close each encoder */
2796     for (i = 0; i < nb_output_streams; i++) {
2797         ost = &output_streams[i];
2798         if (ost->encoding_needed) {
2799             av_freep(&ost->st->codec->stats_in);
2800             avcodec_close(ost->st->codec);
2801         }
2802 #if CONFIG_AVFILTER
2803         avfilter_graph_free(&ost->graph);
2804 #endif
2805     }
2806
2807     /* close each decoder */
2808     for (i = 0; i < nb_input_streams; i++) {
2809         ist = &input_streams[i];
2810         if (ist->decoding_needed) {
2811             avcodec_close(ist->st->codec);
2812         }
2813     }
2814
2815     /* finished ! */
2816     ret = 0;
2817
2818  fail:
2819     av_freep(&bit_buffer);
2820     av_freep(&no_packet);
2821
2822     if (output_streams) {
2823         for (i = 0; i < nb_output_streams; i++) {
2824             ost = &output_streams[i];
2825             if (ost) {
2826                 if (ost->stream_copy)
2827                     av_freep(&ost->st->codec->extradata);
2828                 if (ost->logfile) {
2829                     fclose(ost->logfile);
2830                     ost->logfile = NULL;
2831                 }
2832                 av_fifo_free(ost->fifo); /* works even if fifo is not
2833                                              initialized but set to zero */
2834                 av_freep(&ost->st->codec->subtitle_header);
2835                 av_free(ost->resample_frame.data[0]);
2836                 av_free(ost->forced_kf_pts);
2837                 if (ost->video_resample)
2838                     sws_freeContext(ost->img_resample_ctx);
2839                 swr_free(&ost->swr);
2840                 av_dict_free(&ost->opts);
2841             }
2842         }
2843     }
2844     return ret;
2845 }
2846
2847 static int opt_frame_crop(const char *opt, const char *arg)
2848 {
2849     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2850     return AVERROR(EINVAL);
2851 }
2852
2853 static int opt_pad(const char *opt, const char *arg)
2854 {
2855     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2856     return -1;
2857 }
2858
2859 static double parse_frame_aspect_ratio(const char *arg)
2860 {
2861     int x = 0, y = 0;
2862     double ar = 0;
2863     const char *p;
2864     char *end;
2865
2866     p = strchr(arg, ':');
2867     if (p) {
2868         x = strtol(arg, &end, 10);
2869         if (end == p)
2870             y = strtol(end+1, &end, 10);
2871         if (x > 0 && y > 0)
2872             ar = (double)x / (double)y;
2873     } else
2874         ar = strtod(arg, NULL);
2875
2876     if (!ar) {
2877         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2878         exit_program(1);
2879     }
2880     return ar;
2881 }
2882
2883 static int opt_video_channel(const char *opt, const char *arg)
2884 {
2885     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2886     return opt_default("channel", arg);
2887 }
2888
2889 static int opt_video_standard(const char *opt, const char *arg)
2890 {
2891     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2892     return opt_default("standard", arg);
2893 }
2894
2895 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2896 {
2897     audio_codec_name = arg;
2898     return parse_option(o, "codec:a", arg, options);
2899 }
2900
2901 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2902 {
2903     video_codec_name = arg;
2904     return parse_option(o, "codec:v", arg, options);
2905 }
2906
2907 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2908 {
2909     subtitle_codec_name = arg;
2910     return parse_option(o, "codec:s", arg, options);
2911 }
2912
2913 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2914 {
2915     return parse_option(o, "codec:d", arg, options);
2916 }
2917
2918 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2919 {
2920     StreamMap *m = NULL;
2921     int i, negative = 0, file_idx;
2922     int sync_file_idx = -1, sync_stream_idx;
2923     char *p, *sync;
2924     char *map;
2925
2926     if (*arg == '-') {
2927         negative = 1;
2928         arg++;
2929     }
2930     map = av_strdup(arg);
2931
2932     /* parse sync stream first, just pick first matching stream */
2933     if (sync = strchr(map, ',')) {
2934         *sync = 0;
2935         sync_file_idx = strtol(sync + 1, &sync, 0);
2936         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2937             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2938             exit_program(1);
2939         }
2940         if (*sync)
2941             sync++;
2942         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2943             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2944                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2945                 sync_stream_idx = i;
2946                 break;
2947             }
2948         if (i == input_files[sync_file_idx].nb_streams) {
2949             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2950                                        "match any streams.\n", arg);
2951             exit_program(1);
2952         }
2953     }
2954
2955
2956     file_idx = strtol(map, &p, 0);
2957     if (file_idx >= nb_input_files || file_idx < 0) {
2958         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2959         exit_program(1);
2960     }
2961     if (negative)
2962         /* disable some already defined maps */
2963         for (i = 0; i < o->nb_stream_maps; i++) {
2964             m = &o->stream_maps[i];
2965             if (file_idx == m->file_index &&
2966                 check_stream_specifier(input_files[m->file_index].ctx,
2967                                        input_files[m->file_index].ctx->streams[m->stream_index],
2968                                        *p == ':' ? p + 1 : p) > 0)
2969                 m->disabled = 1;
2970         }
2971     else
2972         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2973             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2974                         *p == ':' ? p + 1 : p) <= 0)
2975                 continue;
2976             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2977                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2978             m = &o->stream_maps[o->nb_stream_maps - 1];
2979
2980             m->file_index   = file_idx;
2981             m->stream_index = i;
2982
2983             if (sync_file_idx >= 0) {
2984                 m->sync_file_index   = sync_file_idx;
2985                 m->sync_stream_index = sync_stream_idx;
2986             } else {
2987                 m->sync_file_index   = file_idx;
2988                 m->sync_stream_index = i;
2989             }
2990         }
2991
2992     if (!m) {
2993         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2994         exit_program(1);
2995     }
2996
2997     av_freep(&map);
2998     return 0;
2999 }
3000
3001 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3002 {
3003     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3004                                 &o->nb_attachments, o->nb_attachments + 1);
3005     o->attachments[o->nb_attachments - 1] = arg;
3006     return 0;
3007 }
3008
3009 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3010 {
3011     int n;
3012     AVStream *st;
3013     AudioChannelMap *m;
3014
3015     o->audio_channel_maps =
3016         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3017                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3018     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3019
3020     /* muted channel syntax */
3021     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3022     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3023         m->file_idx = m->stream_idx = -1;
3024         if (n == 1)
3025             m->ofile_idx = m->ostream_idx = -1;
3026         return 0;
3027     }
3028
3029     /* normal syntax */
3030     n = sscanf(arg, "%d.%d.%d:%d.%d",
3031                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3032                &m->ofile_idx, &m->ostream_idx);
3033
3034     if (n != 3 && n != 5) {
3035         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3036                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3037         exit_program(1);
3038     }
3039
3040     if (n != 5) // only file.stream.channel specified
3041         m->ofile_idx = m->ostream_idx = -1;
3042
3043     /* check input */
3044     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3045         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3046                m->file_idx);
3047         exit_program(1);
3048     }
3049     if (m->stream_idx < 0 ||
3050         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3051         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3052                m->file_idx, m->stream_idx);
3053         exit_program(1);
3054     }
3055     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3056     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3057         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3058                m->file_idx, m->stream_idx);
3059         exit_program(1);
3060     }
3061     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3062         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3063                m->file_idx, m->stream_idx, m->channel_idx);
3064         exit_program(1);
3065     }
3066     return 0;
3067 }
3068
3069 static void parse_meta_type(char *arg, char *type, int *index)
3070 {
3071     if (*arg) {
3072         *type = *arg;
3073         switch (*arg) {
3074         case 'g':
3075             break;
3076         case 's':
3077         case 'c':
3078         case 'p':
3079             if (*(++arg) == ':')
3080                 *index = strtol(++arg, NULL, 0);
3081             break;
3082         default:
3083             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3084             exit_program(1);
3085         }
3086     } else
3087         *type = 'g';
3088 }
3089
3090 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3091 {
3092     MetadataMap *m, *m1;
3093     char *p;
3094
3095     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3096                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3097
3098     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3099     m->file = strtol(arg, &p, 0);
3100     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3101
3102     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3103     if (p = strchr(opt, ':'))
3104         parse_meta_type(p + 1, &m1->type, &m1->index);
3105     else
3106         m1->type = 'g';
3107
3108     if (m->type == 'g' || m1->type == 'g')
3109         o->metadata_global_manual = 1;
3110     if (m->type == 's' || m1->type == 's')
3111         o->metadata_streams_manual = 1;
3112     if (m->type == 'c' || m1->type == 'c')
3113         o->metadata_chapters_manual = 1;
3114
3115     return 0;
3116 }
3117
3118 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3119 {
3120     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3121                     "Use -map_metadata instead.\n");
3122     return opt_map_metadata(o, opt, arg);
3123 }
3124
3125 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3126 {
3127     char buf[128];
3128     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3129     struct tm time = *gmtime((time_t*)&recording_timestamp);
3130     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3131     parse_option(o, "metadata", buf, options);
3132
3133     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3134                                  "tag instead.\n", opt);
3135     return 0;
3136 }
3137
3138 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3139 {
3140     const char *codec_string = encoder ? "encoder" : "decoder";
3141     AVCodec *codec;
3142
3143     codec = encoder ?
3144         avcodec_find_encoder_by_name(name) :
3145         avcodec_find_decoder_by_name(name);
3146     if(!codec) {
3147         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3148         exit_program(1);
3149     }
3150     if(codec->type != type) {
3151         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3152         exit_program(1);
3153     }
3154     return codec;
3155 }
3156
3157 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3158 {
3159     char *codec_name = NULL;
3160
3161     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3162     if (codec_name) {
3163         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3164         st->codec->codec_id = codec->id;
3165         return codec;
3166     } else
3167         return avcodec_find_decoder(st->codec->codec_id);
3168 }
3169
3170 /**
3171  * Add all the streams from the given input file to the global
3172  * list of input streams.
3173  */
3174 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3175 {
3176     int i, rfps, rfps_base;
3177     char *next, *codec_tag = NULL;
3178
3179     for (i = 0; i < ic->nb_streams; i++) {
3180         AVStream *st = ic->streams[i];
3181         AVCodecContext *dec = st->codec;
3182         InputStream *ist;
3183
3184         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3185         ist = &input_streams[nb_input_streams - 1];
3186         ist->st = st;
3187         ist->file_index = nb_input_files;
3188         ist->discard = 1;
3189         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3190
3191         ist->ts_scale = 1.0;
3192         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3193
3194         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3195         if (codec_tag) {
3196             uint32_t tag = strtol(codec_tag, &next, 0);
3197             if (*next)
3198                 tag = AV_RL32(codec_tag);
3199             st->codec->codec_tag = tag;
3200         }
3201
3202         ist->dec = choose_decoder(o, ic, st);
3203
3204         switch (dec->codec_type) {
3205         case AVMEDIA_TYPE_AUDIO:
3206             if(!ist->dec)
3207                 ist->dec = avcodec_find_decoder(dec->codec_id);
3208             if(o->audio_disable)
3209                 st->discard= AVDISCARD_ALL;
3210             break;
3211         case AVMEDIA_TYPE_VIDEO:
3212             if(!ist->dec)
3213                 ist->dec = avcodec_find_decoder(dec->codec_id);
3214             rfps      = ic->streams[i]->r_frame_rate.num;
3215             rfps_base = ic->streams[i]->r_frame_rate.den;
3216             if (dec->lowres) {
3217                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3218             }
3219
3220             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3221
3222                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3223                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3224                        (float)rfps / rfps_base, rfps, rfps_base);
3225             }
3226
3227             if (o->video_disable)
3228                 st->discard= AVDISCARD_ALL;
3229             else if(video_discard)
3230                 st->discard= video_discard;
3231             break;
3232         case AVMEDIA_TYPE_DATA:
3233             break;
3234         case AVMEDIA_TYPE_SUBTITLE:
3235             if(!ist->dec)
3236                 ist->dec = avcodec_find_decoder(dec->codec_id);
3237             if(o->subtitle_disable)
3238                 st->discard = AVDISCARD_ALL;
3239             break;
3240         case AVMEDIA_TYPE_ATTACHMENT:
3241         case AVMEDIA_TYPE_UNKNOWN:
3242             break;
3243         default:
3244             abort();
3245         }
3246     }
3247 }
3248
3249 static void assert_file_overwrite(const char *filename)
3250 {
3251     if (!file_overwrite &&
3252         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3253          av_strstart(filename, "file:", NULL))) {
3254         if (avio_check(filename, 0) == 0) {
3255             if (!using_stdin) {
3256                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3257                 fflush(stderr);
3258                 term_exit();
3259                 if (!read_yesno()) {
3260                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3261                     exit_program(1);
3262                 }
3263                 term_init();
3264             }
3265             else {
3266                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3267                 exit_program(1);
3268             }
3269         }
3270     }
3271 }
3272
3273 static void dump_attachment(AVStream *st, const char *filename)
3274 {
3275     int ret;
3276     AVIOContext *out = NULL;
3277     AVDictionaryEntry *e;
3278
3279     if (!st->codec->extradata_size) {
3280         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3281                nb_input_files - 1, st->index);
3282         return;
3283     }
3284     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3285         filename = e->value;
3286     if (!*filename) {
3287         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3288                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3289         exit_program(1);
3290     }
3291
3292     assert_file_overwrite(filename);
3293
3294     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3295         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3296                filename);
3297         exit_program(1);
3298     }
3299
3300     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3301     avio_flush(out);
3302     avio_close(out);
3303 }
3304
3305 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3306 {
3307     AVFormatContext *ic;
3308     AVInputFormat *file_iformat = NULL;
3309     int err, i, ret;
3310     int64_t timestamp;
3311     uint8_t buf[128];
3312     AVDictionary **opts;
3313     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3314
3315     if (o->format) {
3316         if (!(file_iformat = av_find_input_format(o->format))) {
3317             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3318             exit_program(1);
3319         }
3320     }
3321
3322     if (!strcmp(filename, "-"))
3323         filename = "pipe:";
3324
3325     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3326                     !strcmp(filename, "/dev/stdin");
3327
3328     /* get default parameters from command line */
3329     ic = avformat_alloc_context();
3330     if (!ic) {
3331         print_error(filename, AVERROR(ENOMEM));
3332         exit_program(1);
3333     }
3334     if (o->nb_audio_sample_rate) {
3335         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3336         av_dict_set(&format_opts, "sample_rate", buf, 0);
3337     }
3338     if (o->nb_audio_channels) {
3339         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3340         av_dict_set(&format_opts, "channels", buf, 0);
3341     }
3342     if (o->nb_frame_rates) {
3343         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3344     }
3345     if (o->nb_frame_sizes) {
3346         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3347     }
3348     if (o->nb_frame_pix_fmts)
3349         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3350
3351     ic->video_codec_id   = video_codec_name ?
3352         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3353     ic->audio_codec_id   = audio_codec_name ?
3354         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3355     ic->subtitle_codec_id= subtitle_codec_name ?
3356         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3357     ic->flags |= AVFMT_FLAG_NONBLOCK;
3358     ic->interrupt_callback = int_cb;
3359
3360     if (loop_input) {
3361         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3362         ic->loop_input = loop_input;
3363     }
3364
3365     /* open the input file with generic libav function */
3366     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3367     if (err < 0) {
3368         print_error(filename, err);
3369         exit_program(1);
3370     }
3371     assert_avoptions(format_opts);
3372
3373     /* apply forced codec ids */
3374     for (i = 0; i < ic->nb_streams; i++)
3375         choose_decoder(o, ic, ic->streams[i]);
3376
3377     /* Set AVCodecContext options for avformat_find_stream_info */
3378     opts = setup_find_stream_info_opts(ic, codec_opts);
3379     orig_nb_streams = ic->nb_streams;
3380
3381     /* If not enough info to get the stream parameters, we decode the
3382        first frames to get it. (used in mpeg case for example) */
3383     ret = avformat_find_stream_info(ic, opts);
3384     if (ret < 0) {
3385         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3386         av_close_input_file(ic);
3387         exit_program(1);
3388     }
3389
3390     timestamp = o->start_time;
3391     /* add the stream start time */
3392     if (ic->start_time != AV_NOPTS_VALUE)
3393         timestamp += ic->start_time;
3394
3395     /* if seeking requested, we execute it */
3396     if (o->start_time != 0) {
3397         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3398         if (ret < 0) {
3399             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3400                    filename, (double)timestamp / AV_TIME_BASE);
3401         }
3402     }
3403
3404     /* update the current parameters so that they match the one of the input stream */
3405     add_input_streams(o, ic);
3406
3407     /* dump the file content */
3408     av_dump_format(ic, nb_input_files, filename, 0);
3409
3410     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3411     input_files[nb_input_files - 1].ctx        = ic;
3412     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3413     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3414     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3415     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3416
3417     for (i = 0; i < o->nb_dump_attachment; i++) {
3418         int j;
3419
3420         for (j = 0; j < ic->nb_streams; j++) {
3421             AVStream *st = ic->streams[j];
3422
3423             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3424                 dump_attachment(st, o->dump_attachment[i].u.str);
3425         }
3426     }
3427
3428     for (i = 0; i < orig_nb_streams; i++)
3429         av_dict_free(&opts[i]);
3430     av_freep(&opts);
3431
3432     reset_options(o, 1);
3433     return 0;
3434 }
3435
3436 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3437 {
3438     char *p;
3439     int n = 1, i;
3440
3441     for (p = kf; *p; p++)
3442         if (*p == ',')
3443             n++;
3444     ost->forced_kf_count = n;
3445     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3446     if (!ost->forced_kf_pts) {
3447         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3448         exit_program(1);
3449     }
3450     for (i = 0; i < n; i++) {
3451         p = i ? strchr(p, ',') + 1 : kf;
3452         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3453     }
3454 }
3455
3456 static uint8_t *get_line(AVIOContext *s)
3457 {
3458     AVIOContext *line;
3459     uint8_t *buf;
3460     char c;
3461
3462     if (avio_open_dyn_buf(&line) < 0) {
3463         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3464         exit_program(1);
3465     }
3466
3467     while ((c = avio_r8(s)) && c != '\n')
3468         avio_w8(line, c);
3469     avio_w8(line, 0);
3470     avio_close_dyn_buf(line, &buf);
3471
3472     return buf;
3473 }
3474
3475 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3476 {
3477     int i, ret = 1;
3478     char filename[1000];
3479     const char *base[3] = { getenv("AVCONV_DATADIR"),
3480                             getenv("HOME"),
3481                             AVCONV_DATADIR,
3482                             };
3483
3484     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3485         if (!base[i])
3486             continue;
3487         if (codec_name) {
3488             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3489                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3490             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3491         }
3492         if (ret) {
3493             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3494                      i != 1 ? "" : "/.avconv", preset_name);
3495             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3496         }
3497     }
3498     return ret;
3499 }
3500
3501 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3502 {
3503     char *codec_name = NULL;
3504
3505     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3506     if (!codec_name) {
3507         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3508                                                   NULL, ost->st->codec->codec_type);
3509         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3510     } else if (!strcmp(codec_name, "copy"))
3511         ost->stream_copy = 1;
3512     else {
3513         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3514         ost->st->codec->codec_id = ost->enc->id;
3515     }
3516 }
3517
3518 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3519 {
3520     OutputStream *ost;
3521     AVStream *st = avformat_new_stream(oc, NULL);
3522     int idx      = oc->nb_streams - 1, ret = 0;
3523     char *bsf = NULL, *next, *codec_tag = NULL;
3524     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3525     double qscale = -1;
3526     char *buf = NULL, *arg = NULL, *preset = NULL;
3527     AVIOContext *s = NULL;
3528
3529     if (!st) {
3530         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3531         exit_program(1);
3532     }
3533
3534     if (oc->nb_streams - 1 < o->nb_streamid_map)
3535         st->id = o->streamid_map[oc->nb_streams - 1];
3536
3537     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3538                                 nb_output_streams + 1);
3539     ost = &output_streams[nb_output_streams - 1];
3540     ost->file_index = nb_output_files;
3541     ost->index = idx;
3542     ost->st    = st;
3543     st->codec->codec_type = type;
3544     choose_encoder(o, oc, ost);
3545     if (ost->enc) {
3546         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3547     }
3548
3549     avcodec_get_context_defaults3(st->codec, ost->enc);
3550     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3551
3552     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3553     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3554         do  {
3555             buf = get_line(s);
3556             if (!buf[0] || buf[0] == '#') {
3557                 av_free(buf);
3558                 continue;
3559             }
3560             if (!(arg = strchr(buf, '='))) {
3561                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3562                 exit_program(1);
3563             }
3564             *arg++ = 0;
3565             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3566             av_free(buf);
3567         } while (!s->eof_reached);
3568         avio_close(s);
3569     }
3570     if (ret) {
3571         av_log(NULL, AV_LOG_FATAL,
3572                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3573                preset, ost->file_index, ost->index);
3574         exit_program(1);
3575     }
3576
3577     ost->max_frames = INT64_MAX;
3578     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3579
3580     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3581     while (bsf) {
3582         if (next = strchr(bsf, ','))
3583             *next++ = 0;
3584         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3585             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3586             exit_program(1);
3587         }
3588         if (bsfc_prev)
3589             bsfc_prev->next = bsfc;
3590         else
3591             ost->bitstream_filters = bsfc;
3592
3593         bsfc_prev = bsfc;
3594         bsf       = next;
3595     }
3596
3597     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3598     if (codec_tag) {
3599         uint32_t tag = strtol(codec_tag, &next, 0);
3600         if (*next)
3601             tag = AV_RL32(codec_tag);
3602         st->codec->codec_tag = tag;
3603     }
3604
3605     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3606     if (qscale >= 0 || same_quant) {
3607         st->codec->flags |= CODEC_FLAG_QSCALE;
3608         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3609     }
3610
3611     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3612         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3613
3614     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3615     return ost;
3616 }
3617
3618 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3619 {
3620     int i;
3621     const char *p = str;
3622     for(i = 0;; i++) {
3623         dest[i] = atoi(p);
3624         if(i == 63)
3625             break;
3626         p = strchr(p, ',');
3627         if(!p) {
3628             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3629             exit_program(1);
3630         }
3631         p++;
3632     }
3633 }
3634
3635 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3636 {
3637     AVStream *st;
3638     OutputStream *ost;
3639     AVCodecContext *video_enc;
3640
3641     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3642     st  = ost->st;
3643     video_enc = st->codec;
3644
3645     if (!ost->stream_copy) {
3646         const char *p = NULL;
3647         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3648         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3649         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3650         int i;
3651
3652         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3653         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3654             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3655             exit_program(1);
3656         }
3657
3658         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3659         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3660             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3661             exit_program(1);
3662         }
3663
3664         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3665         if (frame_aspect_ratio)
3666             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3667
3668         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3669         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3670         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3671             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3672             exit_program(1);
3673         }
3674         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3675
3676         if (intra_only)
3677             video_enc->gop_size = 0;
3678         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3679         if (intra_matrix) {
3680             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3681                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3682                 exit_program(1);
3683             }
3684             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3685         }
3686         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3687         if (inter_matrix) {
3688             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3689                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3690                 exit_program(1);
3691             }
3692             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3693         }
3694
3695         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3696         for(i=0; p; i++){
3697             int start, end, q;
3698             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3699             if(e!=3){
3700                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3701                 exit_program(1);
3702             }
3703             /* FIXME realloc failure */
3704             video_enc->rc_override=
3705                 av_realloc(video_enc->rc_override,
3706                            sizeof(RcOverride)*(i+1));
3707             video_enc->rc_override[i].start_frame= start;
3708             video_enc->rc_override[i].end_frame  = end;
3709             if(q>0){
3710                 video_enc->rc_override[i].qscale= q;
3711                 video_enc->rc_override[i].quality_factor= 1.0;
3712             }
3713             else{
3714                 video_enc->rc_override[i].qscale= 0;
3715                 video_enc->rc_override[i].quality_factor= -q/100.0;
3716             }
3717             p= strchr(p, '/');
3718             if(p) p++;
3719         }
3720         video_enc->rc_override_count=i;
3721         if (!video_enc->rc_initial_buffer_occupancy)
3722             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3723         video_enc->intra_dc_precision= intra_dc_precision - 8;
3724
3725         if (do_psnr)
3726             video_enc->flags|= CODEC_FLAG_PSNR;
3727
3728         /* two pass mode */
3729         if (do_pass) {
3730             if (do_pass & 1) {
3731                 video_enc->flags |= CODEC_FLAG_PASS1;
3732             }
3733             if (do_pass & 2) {
3734                 video_enc->flags |= CODEC_FLAG_PASS2;
3735             }
3736         }
3737
3738         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3739         if (forced_key_frames)
3740             parse_forced_key_frames(forced_key_frames, ost);
3741
3742         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3743
3744         ost->top_field_first = -1;
3745         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3746
3747         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3748
3749 #if CONFIG_AVFILTER
3750         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3751         if (filters)
3752             ost->avfilter = av_strdup(filters);
3753 #endif
3754     }
3755
3756     return ost;
3757 }
3758
3759 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3760 {
3761     int n;
3762     AVStream *st;
3763     OutputStream *ost;
3764     AVCodecContext *audio_enc;
3765
3766     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3767     st  = ost->st;
3768
3769     audio_enc = st->codec;
3770     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3771
3772     if (!ost->stream_copy) {
3773         char *sample_fmt = NULL;
3774
3775         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3776
3777         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3778         if (sample_fmt &&
3779             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3780             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3781             exit_program(1);
3782         }
3783
3784         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3785
3786         ost->rematrix_volume=1.0;
3787         MATCH_PER_STREAM_OPT(rematrix_volume, f, ost->rematrix_volume, oc, st);
3788     }
3789
3790     /* check for channel mapping for this audio stream */
3791     for (n = 0; n < o->nb_audio_channel_maps; n++) {
3792         AudioChannelMap *map = &o->audio_channel_maps[n];
3793         InputStream *ist = &input_streams[ost->source_index];
3794         if ((map->channel_idx == -1 || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) &&
3795             (map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
3796             (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
3797             if (ost->audio_channels_mapped < FF_ARRAY_ELEMS(ost->audio_channels_map))
3798                 ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
3799             else
3800                 av_log(NULL, AV_LOG_FATAL, "Max channel mapping for output %d.%d reached\n",
3801                        ost->file_index, ost->st->index);
3802         }
3803     }
3804
3805     return ost;
3806 }
3807
3808 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3809 {
3810     OutputStream *ost;
3811
3812     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3813     if (!ost->stream_copy) {
3814         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3815         exit_program(1);
3816     }
3817
3818     return ost;
3819 }
3820
3821 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3822 {
3823     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3824     ost->stream_copy = 1;
3825     return ost;
3826 }
3827
3828 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3829 {
3830     AVStream *st;
3831     OutputStream *ost;
3832     AVCodecContext *subtitle_enc;
3833
3834     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3835     st  = ost->st;
3836     subtitle_enc = st->codec;
3837
3838     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3839
3840     return ost;
3841 }
3842
3843 /* arg format is "output-stream-index:streamid-value". */
3844 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3845 {
3846     int idx;
3847     char *p;
3848     char idx_str[16];
3849
3850     av_strlcpy(idx_str, arg, sizeof(idx_str));
3851     p = strchr(idx_str, ':');
3852     if (!p) {
3853         av_log(NULL, AV_LOG_FATAL,
3854                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3855                arg, opt);
3856         exit_program(1);
3857     }
3858     *p++ = '\0';
3859     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3860     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3861     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3862     return 0;
3863 }
3864
3865 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3866 {
3867     AVFormatContext *is = ifile->ctx;
3868     AVFormatContext *os = ofile->ctx;
3869     int i;
3870
3871     for (i = 0; i < is->nb_chapters; i++) {
3872         AVChapter *in_ch = is->chapters[i], *out_ch;
3873         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3874                                       AV_TIME_BASE_Q, in_ch->time_base);
3875         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3876                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3877
3878
3879         if (in_ch->end < ts_off)
3880             continue;
3881         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3882             break;
3883
3884         out_ch = av_mallocz(sizeof(AVChapter));
3885         if (!out_ch)
3886             return AVERROR(ENOMEM);
3887
3888         out_ch->id        = in_ch->id;
3889         out_ch->time_base = in_ch->time_base;
3890         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3891         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3892
3893         if (copy_metadata)
3894             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3895
3896         os->nb_chapters++;
3897         os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
3898         if (!os->chapters)
3899             return AVERROR(ENOMEM);
3900         os->chapters[os->nb_chapters - 1] = out_ch;
3901     }
3902     return 0;
3903 }
3904
3905 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3906 {
3907     int i, err;
3908     AVFormatContext *ic = avformat_alloc_context();
3909
3910     ic->interrupt_callback = int_cb;
3911     err = avformat_open_input(&ic, filename, NULL, NULL);
3912     if (err < 0)
3913         return err;
3914     /* copy stream format */
3915     for(i=0;i<ic->nb_streams;i++) {
3916         AVStream *st;
3917         OutputStream *ost;
3918         AVCodec *codec;
3919         AVCodecContext *avctx;
3920
3921         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3922         ost   = new_output_stream(o, s, codec->type);
3923         st    = ost->st;
3924         avctx = st->codec;
3925
3926         // FIXME: a more elegant solution is needed
3927         memcpy(st, ic->streams[i], sizeof(AVStream));
3928         st->info = av_malloc(sizeof(*st->info));
3929         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3930         st->codec= avctx;
3931         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3932
3933         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3934             choose_sample_fmt(st, codec);
3935         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3936             choose_pixel_fmt(st, codec);
3937     }
3938
3939     av_close_input_file(ic);
3940     return 0;
3941 }
3942
3943 static void opt_output_file(void *optctx, const char *filename)
3944 {
3945     OptionsContext *o = optctx;
3946     AVFormatContext *oc;
3947     int i, err;
3948     AVOutputFormat *file_oformat;
3949     OutputStream *ost;
3950     InputStream  *ist;
3951
3952     if (!strcmp(filename, "-"))
3953         filename = "pipe:";
3954
3955     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3956     if (!oc) {
3957         print_error(filename, err);
3958         exit_program(1);
3959     }
3960     file_oformat= oc->oformat;
3961     oc->interrupt_callback = int_cb;
3962
3963     if (!strcmp(file_oformat->name, "ffm") &&
3964         av_strstart(filename, "http:", NULL)) {
3965         int j;
3966         /* special case for files sent to ffserver: we get the stream
3967            parameters from ffserver */
3968         int err = read_ffserver_streams(o, oc, filename);
3969         if (err < 0) {
3970             print_error(filename, err);
3971             exit_program(1);
3972         }
3973         for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
3974             ost = &output_streams[j];
3975             for (i = 0; i < nb_input_streams; i++) {
3976                 ist = &input_streams[i];
3977                 if(ist->st->codec->codec_type == ost->st->codec->codec_type){
3978                     ost->sync_ist= ist;
3979                     ost->source_index= i;
3980                     ist->discard = 0;
3981                     break;
3982                 }
3983             }
3984             if(!ost->sync_ist){
3985                 av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codec->codec_type));
3986                 exit_program(1);
3987             }
3988         }
3989     } else if (!o->nb_stream_maps) {
3990         /* pick the "best" stream of each type */
3991 #define NEW_STREAM(type, index)\
3992         if (index >= 0) {\
3993             ost = new_ ## type ## _stream(o, oc);\
3994             ost->source_index = index;\
3995             ost->sync_ist     = &input_streams[index];\
3996             input_streams[index].discard = 0;\
3997         }
3998
3999         /* video: highest resolution */
4000         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
4001             int area = 0, idx = -1;
4002             for (i = 0; i < nb_input_streams; i++) {
4003                 ist = &input_streams[i];
4004                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
4005                     ist->st->codec->width * ist->st->codec->height > area) {
4006                     area = ist->st->codec->width * ist->st->codec->height;
4007                     idx = i;
4008                 }
4009             }
4010             NEW_STREAM(video, idx);
4011         }
4012
4013         /* audio: most channels */
4014         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
4015             int channels = 0, idx = -1;
4016             for (i = 0; i < nb_input_streams; i++) {
4017                 ist = &input_streams[i];
4018                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
4019                     ist->st->codec->channels > channels) {
4020                     channels = ist->st->codec->channels;
4021                     idx = i;
4022                 }
4023             }
4024             NEW_STREAM(audio, idx);
4025         }
4026
4027         /* subtitles: pick first */
4028         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
4029             for (i = 0; i < nb_input_streams; i++)
4030                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
4031                     NEW_STREAM(subtitle, i);
4032                     break;
4033                 }
4034         }
4035         /* do something with data? */
4036     } else {
4037         for (i = 0; i < o->nb_stream_maps; i++) {
4038             StreamMap *map = &o->stream_maps[i];
4039
4040             if (map->disabled)
4041                 continue;
4042
4043             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
4044             if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
4045                 continue;
4046             if(o->   audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
4047                 continue;
4048             if(o->   video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
4049                 continue;
4050
4051             switch (ist->st->codec->codec_type) {
4052             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
4053             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
4054             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
4055             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
4056             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
4057             default:
4058                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
4059                        map->file_index, map->stream_index);
4060                 exit_program(1);
4061             }
4062
4063             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
4064             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
4065                                            map->sync_stream_index];
4066             ist->discard = 0;
4067         }
4068     }
4069
4070     /* handle attached files */
4071     for (i = 0; i < o->nb_attachments; i++) {
4072         AVIOContext *pb;
4073         uint8_t *attachment;
4074         const char *p;
4075         int64_t len;
4076
4077         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
4078             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
4079                    o->attachments[i]);
4080             exit_program(1);
4081         }
4082         if ((len = avio_size(pb)) <= 0) {
4083             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
4084                    o->attachments[i]);
4085             exit_program(1);
4086         }
4087         if (!(attachment = av_malloc(len))) {
4088             av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
4089                    o->attachments[i]);
4090             exit_program(1);
4091         }
4092         avio_read(pb, attachment, len);
4093
4094         ost = new_attachment_stream(o, oc);
4095         ost->stream_copy               = 0;
4096         ost->source_index              = -1;
4097         ost->attachment_filename       = o->attachments[i];
4098         ost->st->codec->extradata      = attachment;
4099         ost->st->codec->extradata_size = len;
4100
4101         p = strrchr(o->attachments[i], '/');
4102         av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
4103         avio_close(pb);
4104     }
4105
4106     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
4107     output_files[nb_output_files - 1].ctx       = oc;
4108     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
4109     output_files[nb_output_files - 1].recording_time = o->recording_time;
4110     output_files[nb_output_files - 1].start_time     = o->start_time;
4111     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
4112     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
4113
4114     /* check filename in case of an image number is expected */
4115     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
4116         if (!av_filename_number_test(oc->filename)) {
4117             print_error(oc->filename, AVERROR(EINVAL));
4118             exit_program(1);
4119         }
4120     }
4121
4122     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
4123         /* test if it already exists to avoid loosing precious files */
4124         assert_file_overwrite(filename);
4125
4126         /* open the file */
4127         if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
4128                               &oc->interrupt_callback,
4129                               &output_files[nb_output_files - 1].opts)) < 0) {
4130             print_error(filename, err);
4131             exit_program(1);
4132         }
4133     }
4134
4135     if (o->mux_preload) {
4136         uint8_t buf[64];
4137         snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
4138         av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
4139     }
4140     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
4141
4142     if (loop_output >= 0) {
4143         av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n");
4144         oc->loop_output = loop_output;
4145     }
4146
4147     /* copy chapters */
4148     if (o->chapters_input_file >= nb_input_files) {
4149         if (o->chapters_input_file == INT_MAX) {
4150             /* copy chapters from the first input file that has them*/
4151             o->chapters_input_file = -1;
4152             for (i = 0; i < nb_input_files; i++)
4153                 if (input_files[i].ctx->nb_chapters) {
4154                     o->chapters_input_file = i;
4155                     break;
4156                 }
4157         } else {
4158             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
4159                    o->chapters_input_file);
4160             exit_program(1);
4161         }
4162     }
4163     if (o->chapters_input_file >= 0)
4164         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
4165                       !o->metadata_chapters_manual);
4166
4167     /* copy metadata */
4168     for (i = 0; i < o->nb_meta_data_maps; i++) {
4169         AVFormatContext *files[2];
4170         AVDictionary    **meta[2];
4171         int j;
4172
4173 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4174         if ((index) < 0 || (index) >= (nb_elems)) {\
4175             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
4176                      (desc), (index));\
4177             exit_program(1);\
4178         }
4179
4180         int in_file_index = o->meta_data_maps[i][1].file;
4181         if (in_file_index < 0)
4182             continue;
4183         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
4184
4185         files[0] = oc;
4186         files[1] = input_files[in_file_index].ctx;
4187
4188         for (j = 0; j < 2; j++) {
4189             MetadataMap *map = &o->meta_data_maps[i][j];
4190
4191             switch (map->type) {
4192             case 'g':
4193                 meta[j] = &files[j]->metadata;
4194                 break;
4195             case 's':
4196                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
4197                 meta[j] = &files[j]->streams[map->index]->metadata;
4198                 break;
4199             case 'c':
4200                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
4201                 meta[j] = &files[j]->chapters[map->index]->metadata;
4202                 break;
4203             case 'p':
4204                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
4205                 meta[j] = &files[j]->programs[map->index]->metadata;
4206                 break;
4207             default:
4208                 abort();
4209             }
4210         }
4211
4212         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
4213     }
4214
4215     /* copy global metadata by default */
4216     if (!o->metadata_global_manual && nb_input_files){
4217         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
4218                      AV_DICT_DONT_OVERWRITE);
4219         if(o->recording_time != INT64_MAX)
4220             av_dict_set(&oc->metadata, "duration", NULL, 0);
4221     }
4222     if (!o->metadata_streams_manual)
4223         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
4224             InputStream *ist;
4225             if (output_streams[i].source_index < 0)         /* this is true e.g. for attached files */
4226                 continue;
4227             ist = &input_streams[output_streams[i].source_index];
4228             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
4229         }
4230
4231     /* process manually set metadata */
4232     for (i = 0; i < o->nb_metadata; i++) {
4233         AVDictionary **m;
4234         char type, *val;
4235         int index = 0;
4236
4237         val = strchr(o->metadata[i].u.str, '=');
4238         if (!val) {
4239             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
4240                    o->metadata[i].u.str);
4241             exit_program(1);
4242         }
4243         *val++ = 0;
4244
4245         parse_meta_type(o->metadata[i].specifier, &type, &index);
4246         switch (type) {
4247         case 'g':
4248             m = &oc->metadata;
4249             break;
4250         case 's':
4251             if (index < 0 || index >= oc->nb_streams) {
4252                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
4253                 exit_program(1);
4254             }
4255             m = &oc->streams[index]->metadata;
4256             break;
4257         case 'c':
4258             if (index < 0 || index >= oc->nb_chapters) {
4259                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
4260                 exit_program(1);
4261             }
4262             m = &oc->chapters[index]->metadata;
4263             break;
4264         default:
4265             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
4266             exit_program(1);
4267         }
4268
4269         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
4270     }
4271
4272     reset_options(o, 0);
4273 }
4274
4275 /* same option as mencoder */
4276 static int opt_pass(const char *opt, const char *arg)
4277 {
4278     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 3);
4279     return 0;
4280 }
4281
4282 static int64_t getutime(void)
4283 {
4284 #if HAVE_GETRUSAGE
4285     struct rusage rusage;
4286
4287     getrusage(RUSAGE_SELF, &rusage);
4288     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
4289 #elif HAVE_GETPROCESSTIMES
4290     HANDLE proc;
4291     FILETIME c, e, k, u;
4292     proc = GetCurrentProcess();
4293     GetProcessTimes(proc, &c, &e, &k, &u);
4294     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
4295 #else
4296     return av_gettime();
4297 #endif
4298 }
4299
4300 static int64_t getmaxrss(void)
4301 {
4302 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
4303     struct rusage rusage;
4304     getrusage(RUSAGE_SELF, &rusage);
4305     return (int64_t)rusage.ru_maxrss * 1024;
4306 #elif HAVE_GETPROCESSMEMORYINFO
4307     HANDLE proc;
4308     PROCESS_MEMORY_COUNTERS memcounters;
4309     proc = GetCurrentProcess();
4310     memcounters.cb = sizeof(memcounters);
4311     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
4312     return memcounters.PeakPagefileUsage;
4313 #else
4314     return 0;
4315 #endif
4316 }
4317
4318 static int opt_audio_qscale(OptionsContext *o, const char *opt, const char *arg)
4319 {
4320     return parse_option(o, "q:a", arg, options);
4321 }
4322
4323 static void show_usage(void)
4324 {
4325     printf("Hyper fast Audio and Video encoder\n");
4326     printf("usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
4327     printf("\n");
4328 }
4329
4330 static int opt_help(const char *opt, const char *arg)
4331 {
4332     int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM;
4333     av_log_set_callback(log_callback_help);
4334     show_usage();
4335     show_help_options(options, "Main options:\n",
4336                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB, 0);
4337     show_help_options(options, "\nAdvanced options:\n",
4338                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB,
4339                       OPT_EXPERT);
4340     show_help_options(options, "\nVideo options:\n",
4341                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
4342                       OPT_VIDEO);
4343     show_help_options(options, "\nAdvanced Video options:\n",
4344                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
4345                       OPT_VIDEO | OPT_EXPERT);
4346     show_help_options(options, "\nAudio options:\n",
4347                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
4348                       OPT_AUDIO);
4349     show_help_options(options, "\nAdvanced Audio options:\n",
4350                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
4351                       OPT_AUDIO | OPT_EXPERT);
4352     show_help_options(options, "\nSubtitle options:\n",
4353                       OPT_SUBTITLE | OPT_GRA