shorten: Fix invalid free()
[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 no_file_overwrite = 0;
135 static int do_benchmark = 0;
136 static int do_hex_dump = 0;
137 static int do_pkt_dump = 0;
138 static int do_psnr = 0;
139 static int do_pass = 0;
140 static const char *pass_logfilename_prefix;
141 static int video_sync_method= -1;
142 static int audio_sync_method= 0;
143 static float audio_drift_threshold= 0.1;
144 static int copy_ts= 0;
145 static int copy_tb= -1;
146 static int opt_shortest = 0;
147 static char *vstats_filename;
148 static FILE *vstats_file;
149
150 static int audio_volume = 256;
151
152 static int exit_on_error = 0;
153 static int using_stdin = 0;
154 static int run_as_daemon  = 0;
155 static volatile int received_nb_signals = 0;
156 static int64_t video_size = 0;
157 static int64_t audio_size = 0;
158 static int64_t extra_size = 0;
159 static int nb_frames_dup = 0;
160 static int nb_frames_drop = 0;
161 static int input_sync;
162
163 static float dts_delta_threshold = 10;
164
165 static int print_stats = 1;
166
167 static uint8_t *audio_buf;
168 static uint8_t *audio_out;
169 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
170
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     AVFrame *decoded_frame;
182     AVFrame *filtered_frame;
183
184     int64_t       start;     /* time when read started */
185     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
186                                 is not defined */
187     int64_t       pts;       /* current pts */
188     double ts_scale;
189     int is_start;            /* is 1 at the start and after a discontinuity */
190     int showed_multi_packet_warning;
191     AVDictionary *opts;
192 } InputStream;
193
194 typedef struct InputFile {
195     AVFormatContext *ctx;
196     int eof_reached;      /* true if eof reached */
197     int ist_index;        /* index of first stream in input_streams */
198     int buffer_size;      /* current total buffer size */
199     int64_t ts_offset;
200     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
201                              from ctx.nb_streams if new streams appear during av_read_frame() */
202     int rate_emu;
203 } InputFile;
204
205 typedef struct OutputStream {
206     int file_index;          /* file index */
207     int index;               /* stream index in the output file */
208     int source_index;        /* InputStream index */
209     AVStream *st;            /* stream in the output file */
210     int encoding_needed;     /* true if encoding needed for this stream */
211     int frame_number;
212     /* input pts and corresponding output pts
213        for A/V sync */
214     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
215     struct InputStream *sync_ist; /* input stream to sync against */
216     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
217     AVBitStreamFilterContext *bitstream_filters;
218     AVCodec *enc;
219     int64_t max_frames;
220
221     /* video only */
222     int video_resample;
223     AVFrame resample_frame;              /* temporary frame for image resampling */
224     struct SwsContext *img_resample_ctx; /* for image resampling */
225     int resample_height;
226     int resample_width;
227     int resample_pix_fmt;
228     AVRational frame_rate;
229     int force_fps;
230     int top_field_first;
231
232     float frame_aspect_ratio;
233
234     /* forced key frames */
235     int64_t *forced_kf_pts;
236     int forced_kf_count;
237     int forced_kf_index;
238
239     /* audio only */
240     int audio_resample;
241     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
242     int audio_channels_mapped;           ///< number of channels in audio_channels_map
243     int resample_sample_fmt;
244     int resample_channels;
245     int resample_sample_rate;
246     float rematrix_volume;
247     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
248     FILE *logfile;
249
250     struct SwrContext *swr;
251
252 #if CONFIG_AVFILTER
253     AVFilterContext *output_video_filter;
254     AVFilterContext *input_video_filter;
255     AVFilterBufferRef *picref;
256     char *avfilter;
257     AVFilterGraph *graph;
258 #endif
259
260     int64_t sws_flags;
261     AVDictionary *opts;
262     int is_past_recording_time;
263     int stream_copy;
264     const char *attachment_filename;
265     int copy_initial_nonkeyframes;
266 } OutputStream;
267
268
269 #if HAVE_TERMIOS_H
270
271 /* init terminal so that we can grab keys */
272 static struct termios oldtty;
273 #endif
274
275 typedef struct OutputFile {
276     AVFormatContext *ctx;
277     AVDictionary *opts;
278     int ost_index;       /* index of the first stream in output_streams */
279     int64_t recording_time; /* desired length of the resulting file in microseconds */
280     int64_t start_time;     /* start time in microseconds */
281     uint64_t limit_filesize;
282 } OutputFile;
283
284 static InputStream *input_streams = NULL;
285 static int         nb_input_streams = 0;
286 static InputFile   *input_files   = NULL;
287 static int         nb_input_files   = 0;
288
289 static OutputStream *output_streams = NULL;
290 static int        nb_output_streams = 0;
291 static OutputFile   *output_files   = NULL;
292 static int        nb_output_files   = 0;
293
294 typedef struct OptionsContext {
295     /* input/output options */
296     int64_t start_time;
297     const char *format;
298
299     SpecifierOpt *codec_names;
300     int        nb_codec_names;
301     SpecifierOpt *audio_channels;
302     int        nb_audio_channels;
303     SpecifierOpt *audio_sample_rate;
304     int        nb_audio_sample_rate;
305     SpecifierOpt *rematrix_volume;
306     int        nb_rematrix_volume;
307     SpecifierOpt *frame_rates;
308     int        nb_frame_rates;
309     SpecifierOpt *frame_sizes;
310     int        nb_frame_sizes;
311     SpecifierOpt *frame_pix_fmts;
312     int        nb_frame_pix_fmts;
313
314     /* input options */
315     int64_t input_ts_offset;
316     int rate_emu;
317
318     SpecifierOpt *ts_scale;
319     int        nb_ts_scale;
320     SpecifierOpt *dump_attachment;
321     int        nb_dump_attachment;
322
323     /* output options */
324     StreamMap *stream_maps;
325     int     nb_stream_maps;
326     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
327     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
328     /* first item specifies output metadata, second is input */
329     MetadataMap (*meta_data_maps)[2];
330     int nb_meta_data_maps;
331     int metadata_global_manual;
332     int metadata_streams_manual;
333     int metadata_chapters_manual;
334     const char **attachments;
335     int       nb_attachments;
336
337     int chapters_input_file;
338
339     int64_t recording_time;
340     uint64_t limit_filesize;
341     float mux_preload;
342     float mux_max_delay;
343
344     int video_disable;
345     int audio_disable;
346     int subtitle_disable;
347     int data_disable;
348
349     /* indexed by output file stream index */
350     int   *streamid_map;
351     int nb_streamid_map;
352
353     SpecifierOpt *metadata;
354     int        nb_metadata;
355     SpecifierOpt *max_frames;
356     int        nb_max_frames;
357     SpecifierOpt *bitstream_filters;
358     int        nb_bitstream_filters;
359     SpecifierOpt *codec_tags;
360     int        nb_codec_tags;
361     SpecifierOpt *sample_fmts;
362     int        nb_sample_fmts;
363     SpecifierOpt *qscale;
364     int        nb_qscale;
365     SpecifierOpt *forced_key_frames;
366     int        nb_forced_key_frames;
367     SpecifierOpt *force_fps;
368     int        nb_force_fps;
369     SpecifierOpt *frame_aspect_ratios;
370     int        nb_frame_aspect_ratios;
371     SpecifierOpt *rc_overrides;
372     int        nb_rc_overrides;
373     SpecifierOpt *intra_matrices;
374     int        nb_intra_matrices;
375     SpecifierOpt *inter_matrices;
376     int        nb_inter_matrices;
377     SpecifierOpt *top_field_first;
378     int        nb_top_field_first;
379     SpecifierOpt *metadata_map;
380     int        nb_metadata_map;
381     SpecifierOpt *presets;
382     int        nb_presets;
383     SpecifierOpt *copy_initial_nonkeyframes;
384     int        nb_copy_initial_nonkeyframes;
385 #if CONFIG_AVFILTER
386     SpecifierOpt *filters;
387     int        nb_filters;
388 #endif
389 } OptionsContext;
390
391 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
392 {\
393     int i, ret;\
394     for (i = 0; i < o->nb_ ## name; i++) {\
395         char *spec = o->name[i].specifier;\
396         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
397             outvar = o->name[i].u.type;\
398         else if (ret < 0)\
399             exit_program(1);\
400     }\
401 }
402
403 static void reset_options(OptionsContext *o, int is_input)
404 {
405     const OptionDef *po = options;
406     OptionsContext bak= *o;
407
408     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
409     while (po->name) {
410         void *dst = (uint8_t*)o + po->u.off;
411
412         if (po->flags & OPT_SPEC) {
413             SpecifierOpt **so = dst;
414             int i, *count = (int*)(so + 1);
415             for (i = 0; i < *count; i++) {
416                 av_freep(&(*so)[i].specifier);
417                 if (po->flags & OPT_STRING)
418                     av_freep(&(*so)[i].u.str);
419             }
420             av_freep(so);
421             *count = 0;
422         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
423             av_freep(dst);
424         po++;
425     }
426
427     av_freep(&o->stream_maps);
428     av_freep(&o->audio_channel_maps);
429     av_freep(&o->meta_data_maps);
430     av_freep(&o->streamid_map);
431
432     memset(o, 0, sizeof(*o));
433
434     if(is_input) o->recording_time = bak.recording_time;
435     else         o->recording_time = INT64_MAX;
436     o->mux_max_delay  = 0.7;
437     o->limit_filesize = UINT64_MAX;
438     o->chapters_input_file = INT_MAX;
439
440     uninit_opts();
441     init_opts();
442 }
443
444 #if CONFIG_AVFILTER
445
446 static int configure_video_filters(InputStream *ist, OutputStream *ost)
447 {
448     AVFilterContext *last_filter, *filter;
449     /** filter graph containing all filters including input & output */
450     AVCodecContext *codec = ost->st->codec;
451     AVCodecContext *icodec = ist->st->codec;
452     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
453     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
454     AVRational sample_aspect_ratio;
455     char args[255];
456     int ret;
457
458     ost->graph = avfilter_graph_alloc();
459
460     if (ist->st->sample_aspect_ratio.num){
461         sample_aspect_ratio = ist->st->sample_aspect_ratio;
462     }else
463         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
464
465     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
466              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
467              sample_aspect_ratio.num, sample_aspect_ratio.den);
468
469     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
470                                        "src", args, NULL, ost->graph);
471     if (ret < 0)
472         return ret;
473 #if FF_API_OLD_VSINK_API
474     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
475                                        "out", NULL, pix_fmts, ost->graph);
476 #else
477     buffersink_params->pixel_fmts = pix_fmts;
478     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
479                                        "out", NULL, buffersink_params, ost->graph);
480 #endif
481     av_freep(&buffersink_params);
482     if (ret < 0)
483         return ret;
484     last_filter = ost->input_video_filter;
485
486     if (codec->width  != icodec->width || codec->height != icodec->height) {
487         snprintf(args, 255, "%d:%d:flags=0x%X",
488                  codec->width,
489                  codec->height,
490                  (unsigned)ost->sws_flags);
491         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
492                                                 NULL, args, NULL, ost->graph)) < 0)
493             return ret;
494         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
495             return ret;
496         last_filter = filter;
497     }
498
499     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
500     ost->graph->scale_sws_opts = av_strdup(args);
501
502     if (ost->avfilter) {
503         AVFilterInOut *outputs = avfilter_inout_alloc();
504         AVFilterInOut *inputs  = avfilter_inout_alloc();
505
506         outputs->name    = av_strdup("in");
507         outputs->filter_ctx = last_filter;
508         outputs->pad_idx = 0;
509         outputs->next    = NULL;
510
511         inputs->name    = av_strdup("out");
512         inputs->filter_ctx = ost->output_video_filter;
513         inputs->pad_idx = 0;
514         inputs->next    = NULL;
515
516         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
517             return ret;
518         av_freep(&ost->avfilter);
519     } else {
520         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
521             return ret;
522     }
523
524     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
525         return ret;
526
527     codec->width  = ost->output_video_filter->inputs[0]->w;
528     codec->height = ost->output_video_filter->inputs[0]->h;
529     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
530         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
531         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
532         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
533
534     return 0;
535 }
536 #endif /* CONFIG_AVFILTER */
537
538 static void term_exit(void)
539 {
540     av_log(NULL, AV_LOG_QUIET, "%s", "");
541 #if HAVE_TERMIOS_H
542     if(!run_as_daemon)
543         tcsetattr (0, TCSANOW, &oldtty);
544 #endif
545 }
546
547 static volatile int received_sigterm = 0;
548
549 static void sigterm_handler(int sig)
550 {
551     received_sigterm = sig;
552     received_nb_signals++;
553     term_exit();
554     if(received_nb_signals > 3)
555         exit(123);
556 }
557
558 static void term_init(void)
559 {
560 #if HAVE_TERMIOS_H
561     if(!run_as_daemon){
562     struct termios tty;
563
564     tcgetattr (0, &tty);
565     oldtty = tty;
566     atexit(term_exit);
567
568     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
569                           |INLCR|IGNCR|ICRNL|IXON);
570     tty.c_oflag |= OPOST;
571     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
572     tty.c_cflag &= ~(CSIZE|PARENB);
573     tty.c_cflag |= CS8;
574     tty.c_cc[VMIN] = 1;
575     tty.c_cc[VTIME] = 0;
576
577     tcsetattr (0, TCSANOW, &tty);
578     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
579     }
580 #endif
581     avformat_network_deinit();
582
583     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
584     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
585 #ifdef SIGXCPU
586     signal(SIGXCPU, sigterm_handler);
587 #endif
588 }
589
590 /* read a key without blocking */
591 static int read_key(void)
592 {
593     unsigned char ch;
594 #if HAVE_TERMIOS_H
595     int n = 1;
596     struct timeval tv;
597     fd_set rfds;
598
599     FD_ZERO(&rfds);
600     FD_SET(0, &rfds);
601     tv.tv_sec = 0;
602     tv.tv_usec = 0;
603     n = select(1, &rfds, NULL, NULL, &tv);
604     if (n > 0) {
605         n = read(0, &ch, 1);
606         if (n == 1)
607             return ch;
608
609         return n;
610     }
611 #elif HAVE_KBHIT
612 #    if HAVE_PEEKNAMEDPIPE
613     static int is_pipe;
614     static HANDLE input_handle;
615     DWORD dw, nchars;
616     if(!input_handle){
617         input_handle = GetStdHandle(STD_INPUT_HANDLE);
618         is_pipe = !GetConsoleMode(input_handle, &dw);
619     }
620
621     if (stdin->_cnt > 0) {
622         read(0, &ch, 1);
623         return ch;
624     }
625     if (is_pipe) {
626         /* When running under a GUI, you will end here. */
627         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
628             return -1;
629         //Read it
630         if(nchars != 0) {
631             read(0, &ch, 1);
632             return ch;
633         }else{
634             return -1;
635         }
636     }
637 #    endif
638     if(kbhit())
639         return(getch());
640 #endif
641     return -1;
642 }
643
644 static int decode_interrupt_cb(void *ctx)
645 {
646     return received_nb_signals > 1;
647 }
648
649 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
650
651 void av_noreturn exit_program(int ret)
652 {
653     int i;
654
655     /* close files */
656     for(i=0;i<nb_output_files;i++) {
657         AVFormatContext *s = output_files[i].ctx;
658         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
659             avio_close(s->pb);
660         avformat_free_context(s);
661         av_dict_free(&output_files[i].opts);
662     }
663     for(i=0;i<nb_input_files;i++) {
664         avformat_close_input(&input_files[i].ctx);
665     }
666     for (i = 0; i < nb_input_streams; i++) {
667         av_freep(&input_streams[i].decoded_frame);
668         av_freep(&input_streams[i].filtered_frame);
669         av_dict_free(&input_streams[i].opts);
670     }
671
672     if (vstats_file)
673         fclose(vstats_file);
674     av_free(vstats_filename);
675
676     av_freep(&input_streams);
677     av_freep(&input_files);
678     av_freep(&output_streams);
679     av_freep(&output_files);
680
681     uninit_opts();
682     av_free(audio_buf);
683     av_free(audio_out);
684     allocated_audio_buf_size= allocated_audio_out_size= 0;
685
686 #if CONFIG_AVFILTER
687     avfilter_uninit();
688 #endif
689     avformat_network_deinit();
690
691     av_freep(&input_tmp);
692
693     if (received_sigterm) {
694         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
695                (int) received_sigterm);
696         exit (255);
697     }
698
699     exit(ret); /* not all OS-es handle main() return value */
700 }
701
702 static void assert_avoptions(AVDictionary *m)
703 {
704     AVDictionaryEntry *t;
705     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
706         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
707         exit_program(1);
708     }
709 }
710
711 static void assert_codec_experimental(AVCodecContext *c, int encoder)
712 {
713     const char *codec_string = encoder ? "encoder" : "decoder";
714     AVCodec *codec;
715     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
716         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
717         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
718                 "results.\nAdd '-strict experimental' if you want to use it.\n",
719                 codec_string, c->codec->name);
720         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
721         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
722             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
723                    codec_string, codec->name);
724         exit_program(1);
725     }
726 }
727
728 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
729 {
730     if(codec && codec->sample_fmts){
731         const enum AVSampleFormat *p= codec->sample_fmts;
732         for(; *p!=-1; p++){
733             if(*p == st->codec->sample_fmt)
734                 break;
735         }
736         if (*p == -1) {
737             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
738                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
739             if(av_get_sample_fmt_name(st->codec->sample_fmt))
740             av_log(NULL, AV_LOG_WARNING,
741                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
742                    av_get_sample_fmt_name(st->codec->sample_fmt),
743                    codec->name,
744                    av_get_sample_fmt_name(codec->sample_fmts[0]));
745             st->codec->sample_fmt = codec->sample_fmts[0];
746         }
747     }
748 }
749
750 static void choose_sample_rate(AVStream *st, AVCodec *codec)
751 {
752     if(codec && codec->supported_samplerates){
753         const int *p= codec->supported_samplerates;
754         int best=0;
755         int best_dist=INT_MAX;
756         for(; *p; p++){
757             int dist= abs(st->codec->sample_rate - *p);
758             if(dist < best_dist){
759                 best_dist= dist;
760                 best= *p;
761             }
762         }
763         if(best_dist){
764             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
765         }
766         st->codec->sample_rate= best;
767     }
768 }
769
770 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
771 {
772     if(codec && codec->pix_fmts){
773         const enum PixelFormat *p= codec->pix_fmts;
774         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
775         enum PixelFormat best= PIX_FMT_NONE;
776         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
777             if(st->codec->codec_id==CODEC_ID_MJPEG){
778                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
779             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
780                 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};
781             }
782         }
783         for (; *p != PIX_FMT_NONE; p++) {
784             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
785             if(*p == st->codec->pix_fmt)
786                 break;
787         }
788         if (*p == PIX_FMT_NONE) {
789             if(st->codec->pix_fmt != PIX_FMT_NONE)
790                 av_log(NULL, AV_LOG_WARNING,
791                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
792                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
793                         codec->name,
794                         av_pix_fmt_descriptors[best].name);
795             st->codec->pix_fmt = best;
796         }
797     }
798 }
799
800 static double get_sync_ipts(const OutputStream *ost)
801 {
802     const InputStream *ist = ost->sync_ist;
803     OutputFile *of = &output_files[ost->file_index];
804     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
805 }
806
807 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
808 {
809     int ret;
810
811     while(bsfc){
812         AVPacket new_pkt= *pkt;
813         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
814                                           &new_pkt.data, &new_pkt.size,
815                                           pkt->data, pkt->size,
816                                           pkt->flags & AV_PKT_FLAG_KEY);
817         if(a>0){
818             av_free_packet(pkt);
819             new_pkt.destruct= av_destruct_packet;
820         } else if(a<0){
821             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
822                    bsfc->filter->name, pkt->stream_index,
823                    avctx->codec ? avctx->codec->name : "copy");
824             print_error("", a);
825             if (exit_on_error)
826                 exit_program(1);
827         }
828         *pkt= new_pkt;
829
830         bsfc= bsfc->next;
831     }
832
833     ret= av_interleaved_write_frame(s, pkt);
834     if(ret < 0){
835         print_error("av_interleaved_write_frame()", ret);
836         exit_program(1);
837     }
838 }
839
840 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
841 {
842     int fill_char = 0x00;
843     if (sample_fmt == AV_SAMPLE_FMT_U8)
844         fill_char = 0x80;
845     memset(buf, fill_char, size);
846 }
847
848 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
849                          InputStream *ist, AVFrame *decoded_frame)
850 {
851     uint8_t *buftmp;
852     int64_t audio_out_size, audio_buf_size;
853
854     int size_out, frame_bytes, ret, resample_changed;
855     AVCodecContext *enc= ost->st->codec;
856     AVCodecContext *dec= ist->st->codec;
857     int osize = av_get_bytes_per_sample(enc->sample_fmt);
858     int isize = av_get_bytes_per_sample(dec->sample_fmt);
859     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
860     uint8_t *buf = decoded_frame->data[0];
861     int size     = decoded_frame->nb_samples * dec->channels * isize;
862     int64_t allocated_for_size = size;
863
864 need_realloc:
865     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
866     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
867     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
868     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
869     audio_buf_size*= osize*enc->channels;
870
871     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
872     if(coded_bps > 8*osize)
873         audio_out_size= audio_out_size * coded_bps / (8*osize);
874     audio_out_size += FF_MIN_BUFFER_SIZE;
875
876     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
877         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
878         exit_program(1);
879     }
880
881     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
882     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
883     if (!audio_buf || !audio_out){
884         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
885         exit_program(1);
886     }
887
888     if (enc->channels != dec->channels
889      || enc->sample_fmt != dec->sample_fmt
890      || enc->sample_rate!= dec->sample_rate
891     )
892         ost->audio_resample = 1;
893
894     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
895                        ost->resample_channels    != dec->channels   ||
896                        ost->resample_sample_rate != dec->sample_rate;
897
898     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
899         if (resample_changed) {
900             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",
901                    ist->file_index, ist->st->index,
902                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
903                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
904             ost->resample_sample_fmt  = dec->sample_fmt;
905             ost->resample_channels    = dec->channels;
906             ost->resample_sample_rate = dec->sample_rate;
907             swr_free(&ost->swr);
908         }
909         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
910         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
911             ost->resample_sample_fmt  == enc->sample_fmt &&
912             ost->resample_channels    == enc->channels   &&
913             ost->resample_sample_rate == enc->sample_rate) {
914             //ost->swr = NULL;
915             ost->audio_resample = 0;
916         } else {
917             ost->swr = swr_alloc_set_opts(ost->swr,
918                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
919                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
920                                           0, NULL);
921             if (ost->audio_channels_mapped)
922                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
923             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
924             if (ost->audio_channels_mapped) {
925                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
926                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
927             }
928             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
929             av_opt_set_int(ost->swr, "och", enc->channels, 0);
930             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
931             if(ost->swr && swr_init(ost->swr) < 0){
932                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
933                 swr_free(&ost->swr);
934             }
935
936             if (!ost->swr) {
937                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
938                         dec->channels, dec->sample_rate,
939                         enc->channels, enc->sample_rate);
940                 exit_program(1);
941             }
942         }
943     }
944
945     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
946
947     if(audio_sync_method){
948         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
949                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
950         int idelta = delta * dec->sample_rate / enc->sample_rate;
951         int byte_delta = idelta * isize * dec->channels;
952
953         //FIXME resample delay
954         if(fabs(delta) > 50){
955             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
956                 if(byte_delta < 0){
957                     byte_delta= FFMAX(byte_delta, -size);
958                     size += byte_delta;
959                     buf  -= byte_delta;
960                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
961                            -byte_delta / (isize * dec->channels));
962                     if(!size)
963                         return;
964                     ist->is_start=0;
965                 }else{
966                     input_tmp= av_realloc(input_tmp, byte_delta + size);
967
968                     if(byte_delta > allocated_for_size - size){
969                         allocated_for_size= byte_delta + (int64_t)size;
970                         goto need_realloc;
971                     }
972                     ist->is_start=0;
973
974                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
975                     memcpy(input_tmp + byte_delta, buf, size);
976                     buf= input_tmp;
977                     size += byte_delta;
978                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
979                 }
980             }else if(audio_sync_method>1){
981                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
982                 av_assert0(ost->audio_resample);
983                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
984                        delta, comp, enc->sample_rate);
985 //                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));
986                 swr_compensate(ost->swr, comp, enc->sample_rate);
987             }
988         }
989     }else
990         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
991                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
992
993     if (ost->audio_resample) {
994         buftmp = audio_buf;
995         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
996                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
997         size_out = size_out * enc->channels * osize;
998     } else {
999         buftmp = buf;
1000         size_out = size;
1001     }
1002
1003     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1004
1005     /* now encode as many frames as possible */
1006     if (enc->frame_size > 1) {
1007         /* output resampled raw samples */
1008         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1009             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1010             exit_program(1);
1011         }
1012         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1013
1014         frame_bytes = enc->frame_size * osize * enc->channels;
1015
1016         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1017             AVPacket pkt;
1018             av_init_packet(&pkt);
1019
1020             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1021
1022             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1023
1024             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1025                                        (short *)audio_buf);
1026             if (ret < 0) {
1027                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1028                 exit_program(1);
1029             }
1030             audio_size += ret;
1031             pkt.stream_index= ost->index;
1032             pkt.data= audio_out;
1033             pkt.size= ret;
1034             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1035                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1036             pkt.flags |= AV_PKT_FLAG_KEY;
1037             write_frame(s, &pkt, enc, ost->bitstream_filters);
1038
1039             ost->sync_opts += enc->frame_size;
1040         }
1041     } else {
1042         AVPacket pkt;
1043         av_init_packet(&pkt);
1044
1045         ost->sync_opts += size_out / (osize * enc->channels);
1046
1047         /* output a pcm frame */
1048         /* determine the size of the coded buffer */
1049         size_out /= osize;
1050         if (coded_bps)
1051             size_out = size_out*coded_bps/8;
1052
1053         if(size_out > audio_out_size){
1054             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1055             exit_program(1);
1056         }
1057
1058         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1059         ret = avcodec_encode_audio(enc, audio_out, size_out,
1060                                    (short *)buftmp);
1061         if (ret < 0) {
1062             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1063             exit_program(1);
1064         }
1065         audio_size += ret;
1066         pkt.stream_index= ost->index;
1067         pkt.data= audio_out;
1068         pkt.size= ret;
1069         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1070             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1071         pkt.flags |= AV_PKT_FLAG_KEY;
1072         write_frame(s, &pkt, enc, ost->bitstream_filters);
1073     }
1074 }
1075
1076 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1077 {
1078     AVCodecContext *dec;
1079     AVPicture *picture2;
1080     AVPicture picture_tmp;
1081     uint8_t *buf = 0;
1082
1083     dec = ist->st->codec;
1084
1085     /* deinterlace : must be done before any resize */
1086     if (do_deinterlace) {
1087         int size;
1088
1089         /* create temporary picture */
1090         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1091         buf = av_malloc(size);
1092         if (!buf)
1093             return;
1094
1095         picture2 = &picture_tmp;
1096         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1097
1098         if(avpicture_deinterlace(picture2, picture,
1099                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1100             /* if error, do not deinterlace */
1101             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1102             av_free(buf);
1103             buf = NULL;
1104             picture2 = picture;
1105         }
1106     } else {
1107         picture2 = picture;
1108     }
1109
1110     if (picture != picture2)
1111         *picture = *picture2;
1112     *bufp = buf;
1113 }
1114
1115 static void do_subtitle_out(AVFormatContext *s,
1116                             OutputStream *ost,
1117                             InputStream *ist,
1118                             AVSubtitle *sub,
1119                             int64_t pts)
1120 {
1121     static uint8_t *subtitle_out = NULL;
1122     int subtitle_out_max_size = 1024 * 1024;
1123     int subtitle_out_size, nb, i;
1124     AVCodecContext *enc;
1125     AVPacket pkt;
1126
1127     if (pts == AV_NOPTS_VALUE) {
1128         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1129         if (exit_on_error)
1130             exit_program(1);
1131         return;
1132     }
1133
1134     enc = ost->st->codec;
1135
1136     if (!subtitle_out) {
1137         subtitle_out = av_malloc(subtitle_out_max_size);
1138     }
1139
1140     /* Note: DVB subtitle need one packet to draw them and one other
1141        packet to clear them */
1142     /* XXX: signal it in the codec context ? */
1143     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1144         nb = 2;
1145     else
1146         nb = 1;
1147
1148     for(i = 0; i < nb; i++) {
1149         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1150         // start_display_time is required to be 0
1151         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1152         sub->end_display_time -= sub->start_display_time;
1153         sub->start_display_time = 0;
1154         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1155                                                     subtitle_out_max_size, sub);
1156         if (subtitle_out_size < 0) {
1157             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1158             exit_program(1);
1159         }
1160
1161         av_init_packet(&pkt);
1162         pkt.stream_index = ost->index;
1163         pkt.data = subtitle_out;
1164         pkt.size = subtitle_out_size;
1165         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1166         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1167             /* XXX: the pts correction is handled here. Maybe handling
1168                it in the codec would be better */
1169             if (i == 0)
1170                 pkt.pts += 90 * sub->start_display_time;
1171             else
1172                 pkt.pts += 90 * sub->end_display_time;
1173         }
1174         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1175     }
1176 }
1177
1178 static int bit_buffer_size= 1024*256;
1179 static uint8_t *bit_buffer= NULL;
1180
1181 static void do_video_resample(OutputStream *ost,
1182                               InputStream *ist,
1183                               AVFrame *in_picture,
1184                               AVFrame **out_picture)
1185 {
1186 #if CONFIG_AVFILTER
1187     *out_picture = in_picture;
1188 #else
1189     AVCodecContext *dec = ist->st->codec;
1190     AVCodecContext *enc = ost->st->codec;
1191     int resample_changed = ost->resample_width   != dec->width  ||
1192                            ost->resample_height  != dec->height ||
1193                            ost->resample_pix_fmt != dec->pix_fmt;
1194
1195     *out_picture = in_picture;
1196     if (resample_changed) {
1197         av_log(NULL, AV_LOG_INFO,
1198                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1199                ist->file_index, ist->st->index,
1200                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1201                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1202         ost->resample_width   = dec->width;
1203         ost->resample_height  = dec->height;
1204         ost->resample_pix_fmt = dec->pix_fmt;
1205     }
1206
1207     ost->video_resample = dec->width   != enc->width  ||
1208                           dec->height  != enc->height ||
1209                           dec->pix_fmt != enc->pix_fmt;
1210
1211     if (ost->video_resample) {
1212         *out_picture = &ost->resample_frame;
1213         if (!ost->img_resample_ctx || resample_changed) {
1214             /* initialize the destination picture */
1215             if (!ost->resample_frame.data[0]) {
1216                 avcodec_get_frame_defaults(&ost->resample_frame);
1217                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1218                                     enc->width, enc->height)) {
1219                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1220                     exit_program(1);
1221                 }
1222             }
1223             /* initialize a new scaler context */
1224             sws_freeContext(ost->img_resample_ctx);
1225             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1226                                                    enc->width, enc->height, enc->pix_fmt,
1227                                                    ost->sws_flags, NULL, NULL, NULL);
1228             if (ost->img_resample_ctx == NULL) {
1229                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1230                 exit_program(1);
1231             }
1232         }
1233         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1234               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1235     }
1236 #endif
1237 }
1238
1239
1240 static void do_video_out(AVFormatContext *s,
1241                          OutputStream *ost,
1242                          InputStream *ist,
1243                          AVFrame *in_picture,
1244                          int *frame_size, float quality)
1245 {
1246     int nb_frames, i, ret, format_video_sync;
1247     AVFrame *final_picture;
1248     AVCodecContext *enc;
1249     double sync_ipts;
1250     double duration = 0;
1251
1252     enc = ost->st->codec;
1253
1254     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1255         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1256         if(ist->st->avg_frame_rate.num)
1257             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1258
1259         duration /= av_q2d(enc->time_base);
1260     }
1261
1262     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1263
1264     /* by default, we output a single frame */
1265     nb_frames = 1;
1266
1267     *frame_size = 0;
1268
1269     format_video_sync = video_sync_method;
1270     if (format_video_sync < 0)
1271         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1272
1273     if (format_video_sync) {
1274         double vdelta = sync_ipts - ost->sync_opts + duration;
1275         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1276         if (vdelta < -1.1)
1277             nb_frames = 0;
1278         else if (format_video_sync == 2) {
1279             if(vdelta<=-0.6){
1280                 nb_frames=0;
1281             }else if(vdelta>0.6)
1282                 ost->sync_opts= lrintf(sync_ipts);
1283         }else if (vdelta > 1.1)
1284             nb_frames = lrintf(vdelta);
1285 //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);
1286         if (nb_frames == 0){
1287             ++nb_frames_drop;
1288             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1289         }else if (nb_frames > 1) {
1290             nb_frames_dup += nb_frames - 1;
1291             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1292         }
1293     }else
1294         ost->sync_opts= lrintf(sync_ipts);
1295
1296     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1297     if (nb_frames <= 0)
1298         return;
1299
1300     do_video_resample(ost, ist, in_picture, &final_picture);
1301
1302     /* duplicates frame if needed */
1303     for(i=0;i<nb_frames;i++) {
1304         AVPacket pkt;
1305         av_init_packet(&pkt);
1306         pkt.stream_index= ost->index;
1307
1308         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1309             enc->codec->id == CODEC_ID_RAWVIDEO) {
1310             /* raw pictures are written as AVPicture structure to
1311                avoid any copies. We support temporarily the older
1312                method. */
1313             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1314             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1315             pkt.data= (uint8_t *)final_picture;
1316             pkt.size=  sizeof(AVPicture);
1317             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1318             pkt.flags |= AV_PKT_FLAG_KEY;
1319
1320             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1321         } else {
1322             AVFrame big_picture;
1323
1324             big_picture= *final_picture;
1325             /* better than nothing: use input picture interlaced
1326                settings */
1327             big_picture.interlaced_frame = in_picture->interlaced_frame;
1328             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1329                 if (ost->top_field_first == -1)
1330                     big_picture.top_field_first = in_picture->top_field_first;
1331                 else
1332                     big_picture.top_field_first = !!ost->top_field_first;
1333             }
1334
1335             /* handles same_quant here. This is not correct because it may
1336                not be a global option */
1337             big_picture.quality = quality;
1338             if (!enc->me_threshold)
1339                 big_picture.pict_type = 0;
1340 //            big_picture.pts = AV_NOPTS_VALUE;
1341             big_picture.pts= ost->sync_opts;
1342 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1343 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1344             if (ost->forced_kf_index < ost->forced_kf_count &&
1345                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1346                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1347                 ost->forced_kf_index++;
1348             }
1349             ret = avcodec_encode_video(enc,
1350                                        bit_buffer, bit_buffer_size,
1351                                        &big_picture);
1352             if (ret < 0) {
1353                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1354                 exit_program(1);
1355             }
1356
1357             if(ret>0){
1358                 pkt.data= bit_buffer;
1359                 pkt.size= ret;
1360                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1361                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1362 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1363    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1364    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1365
1366                 if(enc->coded_frame->key_frame)
1367                     pkt.flags |= AV_PKT_FLAG_KEY;
1368                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1369                 *frame_size = ret;
1370                 video_size += ret;
1371                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1372                 //        enc->frame_number-1, ret, enc->pict_type);
1373                 /* if two pass, output log */
1374                 if (ost->logfile && enc->stats_out) {
1375                     fprintf(ost->logfile, "%s", enc->stats_out);
1376                 }
1377             }
1378         }
1379         ost->sync_opts++;
1380         ost->frame_number++;
1381     }
1382 }
1383
1384 static double psnr(double d)
1385 {
1386     return -10.0*log(d)/log(10.0);
1387 }
1388
1389 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1390                            int frame_size)
1391 {
1392     AVCodecContext *enc;
1393     int frame_number;
1394     double ti1, bitrate, avg_bitrate;
1395
1396     /* this is executed just the first time do_video_stats is called */
1397     if (!vstats_file) {
1398         vstats_file = fopen(vstats_filename, "w");
1399         if (!vstats_file) {
1400             perror("fopen");
1401             exit_program(1);
1402         }
1403     }
1404
1405     enc = ost->st->codec;
1406     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1407         frame_number = ost->frame_number;
1408         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1409         if (enc->flags&CODEC_FLAG_PSNR)
1410             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1411
1412         fprintf(vstats_file,"f_size= %6d ", frame_size);
1413         /* compute pts value */
1414         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1415         if (ti1 < 0.01)
1416             ti1 = 0.01;
1417
1418         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1419         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1420         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1421             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1422         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1423     }
1424 }
1425
1426 static void print_report(OutputFile *output_files,
1427                          OutputStream *ost_table, int nb_ostreams,
1428                          int is_last_report, int64_t timer_start, int64_t cur_time)
1429 {
1430     char buf[1024];
1431     OutputStream *ost;
1432     AVFormatContext *oc;
1433     int64_t total_size;
1434     AVCodecContext *enc;
1435     int frame_number, vid, i;
1436     double bitrate;
1437     int64_t pts = INT64_MAX;
1438     static int64_t last_time = -1;
1439     static int qp_histogram[52];
1440     int hours, mins, secs, us;
1441
1442     if (!print_stats && !is_last_report)
1443         return;
1444
1445     if (!is_last_report) {
1446         if (last_time == -1) {
1447             last_time = cur_time;
1448             return;
1449         }
1450         if ((cur_time - last_time) < 500000)
1451             return;
1452         last_time = cur_time;
1453     }
1454
1455
1456     oc = output_files[0].ctx;
1457
1458     total_size = avio_size(oc->pb);
1459     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1460         total_size= avio_tell(oc->pb);
1461         if (total_size < 0)
1462             total_size = 0;
1463     }
1464
1465     buf[0] = '\0';
1466     vid = 0;
1467     for(i=0;i<nb_ostreams;i++) {
1468         float q = -1;
1469         ost = &ost_table[i];
1470         enc = ost->st->codec;
1471         if (!ost->stream_copy && enc->coded_frame)
1472             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1473         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1474             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1475         }
1476         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1477             float t = (cur_time-timer_start) / 1000000.0;
1478
1479             frame_number = ost->frame_number;
1480             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1481                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1482             if(is_last_report)
1483                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1484             if(qp_hist){
1485                 int j;
1486                 int qp = lrintf(q);
1487                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1488                     qp_histogram[qp]++;
1489                 for(j=0; j<32; j++)
1490                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1491             }
1492             if (enc->flags&CODEC_FLAG_PSNR){
1493                 int j;
1494                 double error, error_sum=0;
1495                 double scale, scale_sum=0;
1496                 char type[3]= {'Y','U','V'};
1497                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1498                 for(j=0; j<3; j++){
1499                     if(is_last_report){
1500                         error= enc->error[j];
1501                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1502                     }else{
1503                         error= enc->coded_frame->error[j];
1504                         scale= enc->width*enc->height*255.0*255.0;
1505                     }
1506                     if(j) scale/=4;
1507                     error_sum += error;
1508                     scale_sum += scale;
1509                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1510                 }
1511                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1512             }
1513             vid = 1;
1514         }
1515         /* compute min output value */
1516         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1517                                       ost->st->time_base, AV_TIME_BASE_Q));
1518     }
1519
1520     secs = pts / AV_TIME_BASE;
1521     us = pts % AV_TIME_BASE;
1522     mins = secs / 60;
1523     secs %= 60;
1524     hours = mins / 60;
1525     mins %= 60;
1526
1527     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1528
1529     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1530              "size=%8.0fkB time=", total_size / 1024.0);
1531     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1532              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1533              (100 * us) / AV_TIME_BASE);
1534     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1535              "bitrate=%6.1fkbits/s", bitrate);
1536
1537     if (nb_frames_dup || nb_frames_drop)
1538         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1539                 nb_frames_dup, nb_frames_drop);
1540
1541     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1542
1543     fflush(stderr);
1544
1545     if (is_last_report) {
1546         int64_t raw= audio_size + video_size + extra_size;
1547         av_log(NULL, AV_LOG_INFO, "\n");
1548         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1549                video_size/1024.0,
1550                audio_size/1024.0,
1551                extra_size/1024.0,
1552                100.0*(total_size - raw)/raw
1553         );
1554         if(video_size + audio_size + extra_size == 0){
1555             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1556         }
1557     }
1558 }
1559
1560 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1561 {
1562     int i, ret;
1563
1564     for (i = 0; i < nb_ostreams; i++) {
1565         OutputStream   *ost = &ost_table[i];
1566         AVCodecContext *enc = ost->st->codec;
1567         AVFormatContext *os = output_files[ost->file_index].ctx;
1568
1569         if (!ost->encoding_needed)
1570             continue;
1571
1572         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1573             continue;
1574         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1575             continue;
1576
1577         for(;;) {
1578             AVPacket pkt;
1579             int fifo_bytes;
1580             av_init_packet(&pkt);
1581             pkt.stream_index= ost->index;
1582
1583             switch (ost->st->codec->codec_type) {
1584             case AVMEDIA_TYPE_AUDIO:
1585                 fifo_bytes = av_fifo_size(ost->fifo);
1586                 ret = 0;
1587                 /* encode any samples remaining in fifo */
1588                 if (fifo_bytes > 0) {
1589                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1590                     int fs_tmp = enc->frame_size;
1591
1592                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1593                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1594                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1595                     } else { /* pad */
1596                         int frame_bytes = enc->frame_size*osize*enc->channels;
1597                         if (allocated_audio_buf_size < frame_bytes)
1598                             exit_program(1);
1599                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1600                     }
1601
1602                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1603                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1604                                               ost->st->time_base.num, enc->sample_rate);
1605                     enc->frame_size = fs_tmp;
1606                 }
1607                 if (ret <= 0) {
1608                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1609                 }
1610                 if (ret < 0) {
1611                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1612                     exit_program(1);
1613                 }
1614                 audio_size += ret;
1615                 pkt.flags |= AV_PKT_FLAG_KEY;
1616                 break;
1617             case AVMEDIA_TYPE_VIDEO:
1618                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1619                 if (ret < 0) {
1620                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1621                     exit_program(1);
1622                 }
1623                 video_size += ret;
1624                 if(enc->coded_frame && enc->coded_frame->key_frame)
1625                     pkt.flags |= AV_PKT_FLAG_KEY;
1626                 if (ost->logfile && enc->stats_out) {
1627                     fprintf(ost->logfile, "%s", enc->stats_out);
1628                 }
1629                 break;
1630             default:
1631                 ret=-1;
1632             }
1633
1634             if (ret <= 0)
1635                 break;
1636             pkt.data = bit_buffer;
1637             pkt.size = ret;
1638             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1639                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1640             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1641         }
1642     }
1643 }
1644
1645 /*
1646  * Check whether a packet from ist should be written into ost at this time
1647  */
1648 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1649 {
1650     OutputFile *of = &output_files[ost->file_index];
1651     int ist_index  = ist - input_streams;
1652
1653     if (ost->source_index != ist_index)
1654         return 0;
1655
1656     if (of->start_time && ist->pts < of->start_time)
1657         return 0;
1658
1659     if (of->recording_time != INT64_MAX &&
1660         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1661                       (AVRational){1, 1000000}) >= 0) {
1662         ost->is_past_recording_time = 1;
1663         return 0;
1664     }
1665
1666     return 1;
1667 }
1668
1669 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1670 {
1671     OutputFile *of = &output_files[ost->file_index];
1672     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1673     AVPicture pict;
1674     AVPacket opkt;
1675
1676     av_init_packet(&opkt);
1677
1678     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1679         !ost->copy_initial_nonkeyframes)
1680         return;
1681
1682     /* force the input stream PTS */
1683     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1684         audio_size += pkt->size;
1685     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1686         video_size += pkt->size;
1687         ost->sync_opts++;
1688     }
1689
1690     opkt.stream_index = ost->index;
1691     if (pkt->pts != AV_NOPTS_VALUE)
1692         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1693     else
1694         opkt.pts = AV_NOPTS_VALUE;
1695
1696     if (pkt->dts == AV_NOPTS_VALUE)
1697         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1698     else
1699         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1700     opkt.dts -= ost_tb_start_time;
1701
1702     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1703     opkt.flags    = pkt->flags;
1704
1705     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1706     if(   ost->st->codec->codec_id != CODEC_ID_H264
1707        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1708        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1709        ) {
1710         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1711             opkt.destruct = av_destruct_packet;
1712     } else {
1713         opkt.data = pkt->data;
1714         opkt.size = pkt->size;
1715     }
1716     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1717         /* store AVPicture in AVPacket, as expected by the output format */
1718         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1719         opkt.data = (uint8_t *)&pict;
1720         opkt.size = sizeof(AVPicture);
1721         opkt.flags |= AV_PKT_FLAG_KEY;
1722     }
1723
1724     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1725     ost->st->codec->frame_number++;
1726     ost->frame_number++;
1727     av_free_packet(&opkt);
1728 }
1729
1730 static void rate_emu_sleep(InputStream *ist)
1731 {
1732     if (input_files[ist->file_index].rate_emu) {
1733         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1734         int64_t now = av_gettime() - ist->start;
1735         if (pts > now)
1736             usleep(pts - now);
1737     }
1738 }
1739
1740 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1741 {
1742     AVFrame *decoded_frame;
1743     AVCodecContext *avctx = ist->st->codec;
1744     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1745     int i, ret;
1746
1747     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1748         return AVERROR(ENOMEM);
1749     else
1750         avcodec_get_frame_defaults(ist->decoded_frame);
1751     decoded_frame = ist->decoded_frame;
1752
1753     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1754     if (ret < 0) {
1755         return ret;
1756     }
1757
1758     if (!*got_output) {
1759         /* no audio frame */
1760         return ret;
1761     }
1762
1763     /* if the decoder provides a pts, use it instead of the last packet pts.
1764        the decoder could be delaying output by a packet or more. */
1765     if (decoded_frame->pts != AV_NOPTS_VALUE)
1766         ist->next_pts = decoded_frame->pts;
1767
1768     /* increment next_pts to use for the case where the input stream does not
1769        have timestamps or there are multiple frames in the packet */
1770     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1771                      avctx->sample_rate;
1772
1773     // preprocess audio (volume)
1774     if (audio_volume != 256) {
1775         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1776         void *samples = decoded_frame->data[0];
1777         switch (avctx->sample_fmt) {
1778         case AV_SAMPLE_FMT_U8:
1779         {
1780             uint8_t *volp = samples;
1781             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1782                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1783                 *volp++ = av_clip_uint8(v);
1784             }
1785             break;
1786         }
1787         case AV_SAMPLE_FMT_S16:
1788         {
1789             int16_t *volp = samples;
1790             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1791                 int v = ((*volp) * audio_volume + 128) >> 8;
1792                 *volp++ = av_clip_int16(v);
1793             }
1794             break;
1795         }
1796         case AV_SAMPLE_FMT_S32:
1797         {
1798             int32_t *volp = samples;
1799             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1800                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1801                 *volp++ = av_clipl_int32(v);
1802             }
1803             break;
1804         }
1805         case AV_SAMPLE_FMT_FLT:
1806         {
1807             float *volp = samples;
1808             float scale = audio_volume / 256.f;
1809             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1810                 *volp++ *= scale;
1811             }
1812             break;
1813         }
1814         case AV_SAMPLE_FMT_DBL:
1815         {
1816             double *volp = samples;
1817             double scale = audio_volume / 256.;
1818             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1819                 *volp++ *= scale;
1820             }
1821             break;
1822         }
1823         default:
1824             av_log(NULL, AV_LOG_FATAL,
1825                    "Audio volume adjustment on sample format %s is not supported.\n",
1826                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1827             exit_program(1);
1828         }
1829     }
1830
1831     rate_emu_sleep(ist);
1832
1833     for (i = 0; i < nb_output_streams; i++) {
1834         OutputStream *ost = &output_streams[i];
1835
1836         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1837             continue;
1838         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1839     }
1840
1841     return ret;
1842 }
1843
1844 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1845 {
1846     AVFrame *decoded_frame, *filtered_frame = NULL;
1847     void *buffer_to_free = NULL;
1848     int i, ret = 0;
1849     float quality = 0;
1850 #if CONFIG_AVFILTER
1851     int frame_available = 1;
1852 #endif
1853     int duration=0;
1854     int64_t *best_effort_timestamp;
1855     AVRational *frame_sample_aspect;
1856
1857     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1858         return AVERROR(ENOMEM);
1859     else
1860         avcodec_get_frame_defaults(ist->decoded_frame);
1861     decoded_frame = ist->decoded_frame;
1862     pkt->pts  = *pkt_pts;
1863     pkt->dts  = *pkt_dts;
1864     *pkt_pts  = AV_NOPTS_VALUE;
1865
1866     if (pkt->duration) {
1867         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1868     } else if(ist->st->codec->time_base.num != 0) {
1869         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1870         duration = ((int64_t)AV_TIME_BASE *
1871                           ist->st->codec->time_base.num * ticks) /
1872                           ist->st->codec->time_base.den;
1873     }
1874
1875     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
1876         *pkt_dts += duration;
1877     }else
1878         *pkt_dts = AV_NOPTS_VALUE;
1879
1880     ret = avcodec_decode_video2(ist->st->codec,
1881                                 decoded_frame, got_output, pkt);
1882     if (ret < 0)
1883         return ret;
1884
1885     quality = same_quant ? decoded_frame->quality : 0;
1886     if (!*got_output) {
1887         /* no picture yet */
1888         return ret;
1889     }
1890
1891     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
1892     if(*best_effort_timestamp != AV_NOPTS_VALUE)
1893         ist->next_pts = ist->pts = *best_effort_timestamp;
1894
1895     ist->next_pts += duration;
1896     pkt->size = 0;
1897
1898     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1899
1900 #if CONFIG_AVFILTER
1901     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1902     for(i=0;i<nb_output_streams;i++) {
1903         OutputStream *ost = ost = &output_streams[i];
1904         if(check_output_constraints(ist, ost)){
1905             if (!frame_sample_aspect->num)
1906                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
1907             decoded_frame->pts = ist->pts;
1908
1909             if((av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE)) < 0){
1910                 av_log(0, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1911                 exit_program(1);
1912             }
1913         }
1914     }
1915 #endif
1916
1917     rate_emu_sleep(ist);
1918
1919     for (i = 0; i < nb_output_streams; i++) {
1920         OutputStream *ost = &output_streams[i];
1921         int frame_size;
1922
1923         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1924             continue;
1925
1926 #if CONFIG_AVFILTER
1927         if (ost->input_video_filter) {
1928             frame_available = av_buffersink_poll_frame(ost->output_video_filter);
1929         }
1930         while (frame_available) {
1931             if (ost->output_video_filter) {
1932                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1933                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0){
1934                     av_log(0, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
1935                     goto cont;
1936                 }
1937                 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1938                     av_free(buffer_to_free);
1939                     return AVERROR(ENOMEM);
1940                 } else
1941                     avcodec_get_frame_defaults(ist->filtered_frame);
1942                 filtered_frame = ist->filtered_frame;
1943                 *filtered_frame= *decoded_frame; //for me_threshold
1944                 if (ost->picref) {
1945                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1946                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1947                 }
1948             }
1949             if (ost->picref->video && !ost->frame_aspect_ratio)
1950                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1951 #else
1952             filtered_frame = decoded_frame;
1953 #endif
1954
1955             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1956                          same_quant ? quality : ost->st->codec->global_quality);
1957             if (vstats_filename && frame_size)
1958                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1959 #if CONFIG_AVFILTER
1960             cont:
1961             frame_available = ost->output_video_filter && av_buffersink_poll_frame(ost->output_video_filter);
1962             avfilter_unref_buffer(ost->picref);
1963         }
1964 #endif
1965     }
1966
1967     av_free(buffer_to_free);
1968     return ret;
1969 }
1970
1971 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1972 {
1973     AVSubtitle subtitle;
1974     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1975                                           &subtitle, got_output, pkt);
1976     if (ret < 0)
1977         return ret;
1978     if (!*got_output)
1979         return ret;
1980
1981     rate_emu_sleep(ist);
1982
1983     for (i = 0; i < nb_output_streams; i++) {
1984         OutputStream *ost = &output_streams[i];
1985
1986         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1987             continue;
1988
1989         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1990     }
1991
1992     avsubtitle_free(&subtitle);
1993     return ret;
1994 }
1995
1996 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1997 static int output_packet(InputStream *ist,
1998                          OutputStream *ost_table, int nb_ostreams,
1999                          const AVPacket *pkt)
2000 {
2001     int ret = 0, i;
2002     int got_output;
2003     int64_t pkt_dts = AV_NOPTS_VALUE;
2004     int64_t pkt_pts = AV_NOPTS_VALUE;
2005
2006     AVPacket avpkt;
2007
2008     if (ist->next_pts == AV_NOPTS_VALUE)
2009         ist->next_pts = ist->pts;
2010
2011     if (pkt == NULL) {
2012         /* EOF handling */
2013         av_init_packet(&avpkt);
2014         avpkt.data = NULL;
2015         avpkt.size = 0;
2016         goto handle_eof;
2017     } else {
2018         avpkt = *pkt;
2019     }
2020
2021     if(pkt->dts != AV_NOPTS_VALUE){
2022         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2023             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2024         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2025     }
2026     if(pkt->pts != AV_NOPTS_VALUE)
2027         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2028
2029     //while we have more to decode or while the decoder did output something on EOF
2030     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2031     handle_eof:
2032
2033         ist->pts = ist->next_pts;
2034
2035         if (avpkt.size && avpkt.size != pkt->size) {
2036             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2037                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2038             ist->showed_multi_packet_warning = 1;
2039         }
2040
2041         switch(ist->st->codec->codec_type) {
2042         case AVMEDIA_TYPE_AUDIO:
2043             ret = transcode_audio    (ist, &avpkt, &got_output);
2044             break;
2045         case AVMEDIA_TYPE_VIDEO:
2046             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2047             break;
2048         case AVMEDIA_TYPE_SUBTITLE:
2049             ret = transcode_subtitles(ist, &avpkt, &got_output);
2050             break;
2051         default:
2052             return -1;
2053         }
2054
2055         if (ret < 0)
2056             return ret;
2057
2058         avpkt.dts=
2059         avpkt.pts= AV_NOPTS_VALUE;
2060
2061         // touch data and size only if not EOF
2062         if (pkt) {
2063             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2064                 ret = avpkt.size;
2065             avpkt.data += ret;
2066             avpkt.size -= ret;
2067         }
2068         if (!got_output) {
2069             continue;
2070         }
2071     }
2072
2073     /* handle stream copy */
2074     if (!ist->decoding_needed) {
2075         rate_emu_sleep(ist);
2076         ist->pts = ist->next_pts;
2077         switch (ist->st->codec->codec_type) {
2078         case AVMEDIA_TYPE_AUDIO:
2079             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2080                              ist->st->codec->sample_rate;
2081             break;
2082         case AVMEDIA_TYPE_VIDEO:
2083             if (pkt->duration) {
2084                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2085             } else if(ist->st->codec->time_base.num != 0) {
2086                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2087                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2088                                   ist->st->codec->time_base.num * ticks) /
2089                                   ist->st->codec->time_base.den;
2090             }
2091             break;
2092         }
2093     }
2094     for (i = 0; pkt && i < nb_ostreams; i++) {
2095         OutputStream *ost = &ost_table[i];
2096
2097         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2098             continue;
2099
2100         do_streamcopy(ist, ost, pkt);
2101     }
2102
2103     return 0;
2104 }
2105
2106 static void print_sdp(OutputFile *output_files, int n)
2107 {
2108     char sdp[2048];
2109     int i;
2110     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2111
2112     if (!avc)
2113         exit_program(1);
2114     for (i = 0; i < n; i++)
2115         avc[i] = output_files[i].ctx;
2116
2117     av_sdp_create(avc, n, sdp, sizeof(sdp));
2118     printf("SDP:\n%s\n", sdp);
2119     fflush(stdout);
2120     av_freep(&avc);
2121 }
2122
2123 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2124                              char *error, int error_len)
2125 {
2126     InputStream *ist = &input_streams[ist_index];
2127     if (ist->decoding_needed) {
2128         AVCodec *codec = ist->dec;
2129         if (!codec) {
2130             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2131                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2132             return AVERROR(EINVAL);
2133         }
2134         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2135             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2136                     ist->file_index, ist->st->index);
2137             return AVERROR(EINVAL);
2138         }
2139         assert_codec_experimental(ist->st->codec, 0);
2140         assert_avoptions(ist->opts);
2141     }
2142
2143     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;
2144     ist->next_pts = AV_NOPTS_VALUE;
2145     ist->is_start = 1;
2146
2147     return 0;
2148 }
2149
2150 static int transcode_init(OutputFile *output_files, int nb_output_files,
2151                           InputFile  *input_files,  int nb_input_files)
2152 {
2153     int ret = 0, i, j, k;
2154     AVFormatContext *oc;
2155     AVCodecContext *codec, *icodec;
2156     OutputStream *ost;
2157     InputStream *ist;
2158     char error[1024];
2159     int want_sdp = 1;
2160
2161     /* init framerate emulation */
2162     for (i = 0; i < nb_input_files; i++) {
2163         InputFile *ifile = &input_files[i];
2164         if (ifile->rate_emu)
2165             for (j = 0; j < ifile->nb_streams; j++)
2166                 input_streams[j + ifile->ist_index].start = av_gettime();
2167     }
2168
2169     /* output stream init */
2170     for (i = 0; i < nb_output_files; i++) {
2171         oc = output_files[i].ctx;
2172         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2173             av_dump_format(oc, i, oc->filename, 1);
2174             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2175             return AVERROR(EINVAL);
2176         }
2177     }
2178
2179     /* for each output stream, we compute the right encoding parameters */
2180     for (i = 0; i < nb_output_streams; i++) {
2181         ost = &output_streams[i];
2182         oc  = output_files[ost->file_index].ctx;
2183         ist = &input_streams[ost->source_index];
2184
2185         if (ost->attachment_filename)
2186             continue;
2187
2188         codec  = ost->st->codec;
2189         icodec = ist->st->codec;
2190
2191         ost->st->disposition          = ist->st->disposition;
2192         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2193         codec->chroma_sample_location = icodec->chroma_sample_location;
2194
2195         if (ost->stream_copy) {
2196             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2197
2198             if (extra_size > INT_MAX) {
2199                 return AVERROR(EINVAL);
2200             }
2201
2202             /* if stream_copy is selected, no need to decode or encode */
2203             codec->codec_id   = icodec->codec_id;
2204             codec->codec_type = icodec->codec_type;
2205
2206             if (!codec->codec_tag) {
2207                 if (!oc->oformat->codec_tag ||
2208                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2209                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2210                     codec->codec_tag = icodec->codec_tag;
2211             }
2212
2213             codec->bit_rate       = icodec->bit_rate;
2214             codec->rc_max_rate    = icodec->rc_max_rate;
2215             codec->rc_buffer_size = icodec->rc_buffer_size;
2216             codec->field_order    = icodec->field_order;
2217             codec->extradata      = av_mallocz(extra_size);
2218             if (!codec->extradata) {
2219                 return AVERROR(ENOMEM);
2220             }
2221             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2222             codec->extradata_size= icodec->extradata_size;
2223
2224             codec->time_base = ist->st->time_base;
2225             if(!strcmp(oc->oformat->name, "avi")) {
2226                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2227                                  && av_q2d(ist->st->time_base) < 1.0/500
2228                     || copy_tb==0){
2229                     codec->time_base = icodec->time_base;
2230                     codec->time_base.num *= icodec->ticks_per_frame;
2231                     codec->time_base.den *= 2;
2232                 }
2233             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2234                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2235                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2236             ) {
2237                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2238                                 && av_q2d(ist->st->time_base) < 1.0/500
2239                    || copy_tb==0){
2240                     codec->time_base = icodec->time_base;
2241                     codec->time_base.num *= icodec->ticks_per_frame;
2242                 }
2243             }
2244             av_reduce(&codec->time_base.num, &codec->time_base.den,
2245                         codec->time_base.num, codec->time_base.den, INT_MAX);
2246
2247             switch(codec->codec_type) {
2248             case AVMEDIA_TYPE_AUDIO:
2249                 if(audio_volume != 256) {
2250                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2251                     exit_program(1);
2252                 }
2253                 codec->channel_layout     = icodec->channel_layout;
2254                 codec->sample_rate        = icodec->sample_rate;
2255                 codec->channels           = icodec->channels;
2256                 codec->frame_size         = icodec->frame_size;
2257                 codec->audio_service_type = icodec->audio_service_type;
2258                 codec->block_align        = icodec->block_align;
2259                 break;
2260             case AVMEDIA_TYPE_VIDEO:
2261                 codec->pix_fmt            = icodec->pix_fmt;
2262                 codec->width              = icodec->width;
2263                 codec->height             = icodec->height;
2264                 codec->has_b_frames       = icodec->has_b_frames;
2265                 if (!codec->sample_aspect_ratio.num) {
2266                     codec->sample_aspect_ratio   =
2267                     ost->st->sample_aspect_ratio =
2268                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2269                         ist->st->codec->sample_aspect_ratio.num ?
2270                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2271                 }
2272                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2273                 break;
2274             case AVMEDIA_TYPE_SUBTITLE:
2275                 codec->width  = icodec->width;
2276                 codec->height = icodec->height;
2277                 break;
2278             case AVMEDIA_TYPE_DATA:
2279             case AVMEDIA_TYPE_ATTACHMENT:
2280                 break;
2281             default:
2282                 abort();
2283             }
2284         } else {
2285             if (!ost->enc)
2286                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2287
2288             ist->decoding_needed = 1;
2289             ost->encoding_needed = 1;
2290
2291             switch(codec->codec_type) {
2292             case AVMEDIA_TYPE_AUDIO:
2293                 ost->fifo = av_fifo_alloc(1024);
2294                 if (!ost->fifo) {
2295                     return AVERROR(ENOMEM);
2296                 }
2297                 if (!codec->sample_rate)
2298                     codec->sample_rate = icodec->sample_rate;
2299                 choose_sample_rate(ost->st, ost->enc);
2300                 codec->time_base = (AVRational){1, codec->sample_rate};
2301
2302                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2303                     codec->sample_fmt = icodec->sample_fmt;
2304                 choose_sample_fmt(ost->st, ost->enc);
2305
2306                 if (ost->audio_channels_mapped) {
2307                     /* the requested output channel is set to the number of
2308                      * -map_channel only if no -ac are specified */
2309                     if (!codec->channels) {
2310                         codec->channels       = ost->audio_channels_mapped;
2311                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2312                         if (!codec->channel_layout) {
2313                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2314                             exit_program(1);
2315                         }
2316                     }
2317                     /* fill unused channel mapping with -1 (which means a muted
2318                      * channel in case the number of output channels is bigger
2319                      * than the number of mapped channel) */
2320                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2321                         ost->audio_channels_map[j] = -1;
2322                 } else if (!codec->channels) {
2323                     codec->channels = icodec->channels;
2324                     codec->channel_layout = icodec->channel_layout;
2325                 }
2326                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2327                     codec->channel_layout = 0;
2328
2329                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2330                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2331                                             || codec->channel_layout != icodec->channel_layout;
2332                 icodec->request_channels  = codec->channels;
2333                 ost->resample_sample_fmt  = icodec->sample_fmt;
2334                 ost->resample_sample_rate = icodec->sample_rate;
2335                 ost->resample_channels    = icodec->channels;
2336                 break;
2337             case AVMEDIA_TYPE_VIDEO:
2338                 if (codec->pix_fmt == PIX_FMT_NONE)
2339                     codec->pix_fmt = icodec->pix_fmt;
2340                 choose_pixel_fmt(ost->st, ost->enc);
2341
2342                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2343                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2344                     exit_program(1);
2345                 }
2346
2347                 if (!codec->width || !codec->height) {
2348                     codec->width  = icodec->width;
2349                     codec->height = icodec->height;
2350                 }
2351
2352                 ost->video_resample = codec->width   != icodec->width  ||
2353                                       codec->height  != icodec->height ||
2354                                       codec->pix_fmt != icodec->pix_fmt;
2355                 if (ost->video_resample) {
2356                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2357                 }
2358
2359                 ost->resample_height  = icodec->height;
2360                 ost->resample_width   = icodec->width;
2361                 ost->resample_pix_fmt = icodec->pix_fmt;
2362
2363                 if (!ost->frame_rate.num)
2364                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2365                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2366                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2367                     ost->frame_rate = ost->enc->supported_framerates[idx];
2368                 }
2369                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2370                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2371                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2372                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2373                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2374                 }
2375                 for (j = 0; j < ost->forced_kf_count; j++)
2376                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2377                                                          AV_TIME_BASE_Q,
2378                                                          codec->time_base);
2379
2380 #if CONFIG_AVFILTER
2381                 if (configure_video_filters(ist, ost)) {
2382                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2383                     exit(1);
2384                 }
2385 #endif
2386                 break;
2387             case AVMEDIA_TYPE_SUBTITLE:
2388                 break;
2389             default:
2390                 abort();
2391                 break;
2392             }
2393             /* two pass mode */
2394             if (codec->codec_id != CODEC_ID_H264 &&
2395                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2396                 char logfilename[1024];
2397                 FILE *f;
2398
2399                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2400                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2401                          i);
2402                 if (codec->flags & CODEC_FLAG_PASS2) {
2403                     char  *logbuffer;
2404                     size_t logbuffer_size;
2405                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2406                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2407                                logfilename);
2408                         exit_program(1);
2409                     }
2410                     codec->stats_in = logbuffer;
2411                 }
2412                 if (codec->flags & CODEC_FLAG_PASS1) {
2413                     f = fopen(logfilename, "wb");
2414                     if (!f) {
2415                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2416                                logfilename, strerror(errno));
2417                         exit_program(1);
2418                     }
2419                     ost->logfile = f;
2420                 }
2421             }
2422         }
2423         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2424             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2425             int size        = codec->width * codec->height;
2426             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2427         }
2428     }
2429
2430     if (!bit_buffer)
2431         bit_buffer = av_malloc(bit_buffer_size);
2432     if (!bit_buffer) {
2433         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2434                bit_buffer_size);
2435         return AVERROR(ENOMEM);
2436     }
2437
2438     /* open each encoder */
2439     for (i = 0; i < nb_output_streams; i++) {
2440         ost = &output_streams[i];
2441         if (ost->encoding_needed) {
2442             AVCodec      *codec = ost->enc;
2443             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2444             if (!codec) {
2445                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2446                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2447                 ret = AVERROR(EINVAL);
2448                 goto dump_format;
2449             }
2450             if (dec->subtitle_header) {
2451                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2452                 if (!ost->st->codec->subtitle_header) {
2453                     ret = AVERROR(ENOMEM);
2454                     goto dump_format;
2455                 }
2456                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2457                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2458             }
2459             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2460                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2461                         ost->file_index, ost->index);
2462                 ret = AVERROR(EINVAL);
2463                 goto dump_format;
2464             }
2465             assert_codec_experimental(ost->st->codec, 1);
2466             assert_avoptions(ost->opts);
2467             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2468                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2469                                              " It takes bits/s as argument, not kbits/s\n");
2470             extra_size += ost->st->codec->extradata_size;
2471
2472             if (ost->st->codec->me_threshold)
2473                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2474         }
2475     }
2476
2477     /* init input streams */
2478     for (i = 0; i < nb_input_streams; i++)
2479         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2480             goto dump_format;
2481
2482     /* discard unused programs */
2483     for (i = 0; i < nb_input_files; i++) {
2484         InputFile *ifile = &input_files[i];
2485         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2486             AVProgram *p = ifile->ctx->programs[j];
2487             int discard  = AVDISCARD_ALL;
2488
2489             for (k = 0; k < p->nb_stream_indexes; k++)
2490                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2491                     discard = AVDISCARD_DEFAULT;
2492                     break;
2493                 }
2494             p->discard = discard;
2495         }
2496     }
2497
2498     /* open files and write file headers */
2499     for (i = 0; i < nb_output_files; i++) {
2500         oc = output_files[i].ctx;
2501         oc->interrupt_callback = int_cb;
2502         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2503             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2504             ret = AVERROR(EINVAL);
2505             goto dump_format;
2506         }
2507 //        assert_avoptions(output_files[i].opts);
2508         if (strcmp(oc->oformat->name, "rtp")) {
2509             want_sdp = 0;
2510         }
2511     }
2512
2513  dump_format:
2514     /* dump the file output parameters - cannot be done before in case
2515        of stream copy */
2516     for (i = 0; i < nb_output_files; i++) {
2517         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2518     }
2519
2520     /* dump the stream mapping */
2521     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2522     for (i = 0; i < nb_output_streams; i++) {
2523         ost = &output_streams[i];
2524
2525         if (ost->attachment_filename) {
2526             /* an attached file */
2527             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2528                    ost->attachment_filename, ost->file_index, ost->index);
2529             continue;
2530         }
2531         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2532                input_streams[ost->source_index].file_index,
2533                input_streams[ost->source_index].st->index,
2534                ost->file_index,
2535                ost->index);
2536         if (ost->audio_channels_mapped) {
2537             av_log(NULL, AV_LOG_INFO, " [ch:");
2538             for (j = 0; j < ost->audio_channels_mapped; j++)
2539                 if (ost->audio_channels_map[j] == -1)
2540                     av_log(NULL, AV_LOG_INFO, " M");
2541                 else
2542                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2543             av_log(NULL, AV_LOG_INFO, "]");
2544         }
2545         if (ost->sync_ist != &input_streams[ost->source_index])
2546             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2547                    ost->sync_ist->file_index,
2548                    ost->sync_ist->st->index);
2549         if (ost->stream_copy)
2550             av_log(NULL, AV_LOG_INFO, " (copy)");
2551         else
2552             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2553                    input_streams[ost->source_index].dec->name : "?",
2554                    ost->enc ? ost->enc->name : "?");
2555         av_log(NULL, AV_LOG_INFO, "\n");
2556     }
2557
2558     if (ret) {
2559         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2560         return ret;
2561     }
2562
2563     if (want_sdp) {
2564         print_sdp(output_files, nb_output_files);
2565     }
2566
2567     return 0;
2568 }
2569
2570 /*
2571  * The following code is the main loop of the file converter
2572  */
2573 static int transcode(OutputFile *output_files, int nb_output_files,
2574                      InputFile  *input_files,  int nb_input_files)
2575 {
2576     int ret, i;
2577     AVFormatContext *is, *os;
2578     OutputStream *ost;
2579     InputStream *ist;
2580     uint8_t *no_packet;
2581     int no_packet_count=0;
2582     int64_t timer_start;
2583     int key;
2584
2585     if (!(no_packet = av_mallocz(nb_input_files)))
2586         exit_program(1);
2587
2588     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2589     if (ret < 0)
2590         goto fail;
2591
2592     if (!using_stdin) {
2593         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2594     }
2595
2596     timer_start = av_gettime();
2597
2598     for(; received_sigterm == 0;) {
2599         int file_index, ist_index;
2600         AVPacket pkt;
2601         int64_t ipts_min;
2602         double opts_min;
2603         int64_t cur_time= av_gettime();
2604
2605         ipts_min= INT64_MAX;
2606         opts_min= 1e100;
2607         /* if 'q' pressed, exits */
2608         if (!using_stdin) {
2609             static int64_t last_time;
2610             if (received_nb_signals)
2611                 break;
2612             /* read_key() returns 0 on EOF */
2613             if(cur_time - last_time >= 100000 && !run_as_daemon){
2614                 key =  read_key();
2615                 last_time = cur_time;
2616             }else
2617                 key = -1;
2618             if (key == 'q')
2619                 break;
2620             if (key == '+') av_log_set_level(av_log_get_level()+10);
2621             if (key == '-') av_log_set_level(av_log_get_level()-10);
2622             if (key == 's') qp_hist     ^= 1;
2623             if (key == 'h'){
2624                 if (do_hex_dump){
2625                     do_hex_dump = do_pkt_dump = 0;
2626                 } else if(do_pkt_dump){
2627                     do_hex_dump = 1;
2628                 } else
2629                     do_pkt_dump = 1;
2630                 av_log_set_level(AV_LOG_DEBUG);
2631             }
2632 #if CONFIG_AVFILTER
2633             if (key == 'c' || key == 'C'){
2634                 char buf[4096], target[64], command[256], arg[256] = {0};
2635                 double time;
2636                 int k, n = 0;
2637                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2638                 i = 0;
2639                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2640                     if (k > 0)
2641                         buf[i++] = k;
2642                 buf[i] = 0;
2643                 if (k > 0 &&
2644                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2645                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2646                            target, time, command, arg);
2647                     for (i = 0; i < nb_output_streams; i++) {
2648                         ost = &output_streams[i];
2649                         if (ost->graph) {
2650                             if (time < 0) {
2651                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2652                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2653                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2654                             } else {
2655                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2656                             }
2657                         }
2658                     }
2659                 } else {
2660                     av_log(NULL, AV_LOG_ERROR,
2661                            "Parse error, at least 3 arguments were expected, "
2662                            "only %d given in string '%s'\n", n, buf);
2663                 }
2664             }
2665 #endif
2666             if (key == 'd' || key == 'D'){
2667                 int debug=0;
2668                 if(key == 'D') {
2669                     debug = input_streams[0].st->codec->debug<<1;
2670                     if(!debug) debug = 1;
2671                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2672                         debug += debug;
2673                 }else
2674                     if(scanf("%d", &debug)!=1)
2675                         fprintf(stderr,"error parsing debug value\n");
2676                 for(i=0;i<nb_input_streams;i++) {
2677                     input_streams[i].st->codec->debug = debug;
2678                 }
2679                 for(i=0;i<nb_output_streams;i++) {
2680                     ost = &output_streams[i];
2681                     ost->st->codec->debug = debug;
2682                 }
2683                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2684                 fprintf(stderr,"debug=%d\n", debug);
2685             }
2686             if (key == '?'){
2687                 fprintf(stderr, "key    function\n"
2688                                 "?      show this help\n"
2689                                 "+      increase verbosity\n"
2690                                 "-      decrease verbosity\n"
2691                                 "c      Send command to filtergraph\n"
2692                                 "D      cycle through available debug modes\n"
2693                                 "h      dump packets/hex press to cycle through the 3 states\n"
2694                                 "q      quit\n"
2695                                 "s      Show QP histogram\n"
2696                 );
2697             }
2698         }
2699
2700         /* select the stream that we must read now by looking at the
2701            smallest output pts */
2702         file_index = -1;
2703         for (i = 0; i < nb_output_streams; i++) {
2704             OutputFile *of;
2705             int64_t ipts;
2706             double  opts;
2707             ost = &output_streams[i];
2708             of = &output_files[ost->file_index];
2709             os = output_files[ost->file_index].ctx;
2710             ist = &input_streams[ost->source_index];
2711             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2712                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2713                 continue;
2714             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2715             ipts = ist->pts;
2716             if (!input_files[ist->file_index].eof_reached){
2717                 if(ipts < ipts_min) {
2718                     ipts_min = ipts;
2719                     if(input_sync ) file_index = ist->file_index;
2720                 }
2721                 if(opts < opts_min) {
2722                     opts_min = opts;
2723                     if(!input_sync) file_index = ist->file_index;
2724                 }
2725             }
2726             if (ost->frame_number >= ost->max_frames) {
2727                 int j;
2728                 for (j = 0; j < of->ctx->nb_streams; j++)
2729                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2730                 continue;
2731             }
2732         }
2733         /* if none, if is finished */
2734         if (file_index < 0) {
2735             if(no_packet_count){
2736                 no_packet_count=0;
2737                 memset(no_packet, 0, nb_input_files);
2738                 usleep(10000);
2739                 continue;
2740             }
2741             break;
2742         }
2743
2744         /* read a frame from it and output it in the fifo */
2745         is = input_files[file_index].ctx;
2746         ret= av_read_frame(is, &pkt);
2747         if(ret == AVERROR(EAGAIN)){
2748             no_packet[file_index]=1;
2749             no_packet_count++;
2750             continue;
2751         }
2752         if (ret < 0) {
2753             input_files[file_index].eof_reached = 1;
2754             if (opt_shortest)
2755                 break;
2756             else
2757                 continue;
2758         }
2759
2760         no_packet_count=0;
2761         memset(no_packet, 0, nb_input_files);
2762
2763         if (do_pkt_dump) {
2764             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2765                              is->streams[pkt.stream_index]);
2766         }
2767         /* the following test is needed in case new streams appear
2768            dynamically in stream : we ignore them */
2769         if (pkt.stream_index >= input_files[file_index].nb_streams)
2770             goto discard_packet;
2771         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2772         ist = &input_streams[ist_index];
2773         if (ist->discard)
2774             goto discard_packet;
2775
2776         if (pkt.dts != AV_NOPTS_VALUE)
2777             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2778         if (pkt.pts != AV_NOPTS_VALUE)
2779             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2780
2781         if(pkt.pts != AV_NOPTS_VALUE)
2782             pkt.pts *= ist->ts_scale;
2783         if(pkt.dts != AV_NOPTS_VALUE)
2784             pkt.dts *= ist->ts_scale;
2785
2786 //        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);
2787         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2788             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2789             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2790             int64_t delta= pkt_dts - ist->next_pts;
2791             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2792                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2793                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2794                 pkt_dts+1<ist->pts)&& !copy_ts){
2795                 input_files[ist->file_index].ts_offset -= delta;
2796                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2797                        delta, input_files[ist->file_index].ts_offset);
2798                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2799                 if(pkt.pts != AV_NOPTS_VALUE)
2800                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2801             }
2802         }
2803
2804         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2805         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2806
2807             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2808                    ist->file_index, ist->st->index);
2809             if (exit_on_error)
2810                 exit_program(1);
2811             av_free_packet(&pkt);
2812             continue;
2813         }
2814
2815     discard_packet:
2816         av_free_packet(&pkt);
2817
2818         /* dump report by using the output first video and audio streams */
2819         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2820     }
2821
2822     /* at the end of stream, we must flush the decoder buffers */
2823     for (i = 0; i < nb_input_streams; i++) {
2824         ist = &input_streams[i];
2825         if (ist->decoding_needed) {
2826             output_packet(ist, output_streams, nb_output_streams, NULL);
2827         }
2828     }
2829     flush_encoders(output_streams, nb_output_streams);
2830
2831     term_exit();
2832
2833     /* write the trailer if needed and close file */
2834     for(i=0;i<nb_output_files;i++) {
2835         os = output_files[i].ctx;
2836         av_write_trailer(os);
2837     }
2838
2839     /* dump report by using the first video and audio streams */
2840     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2841
2842     /* close each encoder */
2843     for (i = 0; i < nb_output_streams; i++) {
2844         ost = &output_streams[i];
2845         if (ost->encoding_needed) {
2846             av_freep(&ost->st->codec->stats_in);
2847             avcodec_close(ost->st->codec);
2848         }
2849 #if CONFIG_AVFILTER
2850         avfilter_graph_free(&ost->graph);
2851 #endif
2852     }
2853
2854     /* close each decoder */
2855     for (i = 0; i < nb_input_streams; i++) {
2856         ist = &input_streams[i];
2857         if (ist->decoding_needed) {
2858             avcodec_close(ist->st->codec);
2859         }
2860     }
2861
2862     /* finished ! */
2863     ret = 0;
2864
2865  fail:
2866     av_freep(&bit_buffer);
2867     av_freep(&no_packet);
2868
2869     if (output_streams) {
2870         for (i = 0; i < nb_output_streams; i++) {
2871             ost = &output_streams[i];
2872             if (ost) {
2873                 if (ost->stream_copy)
2874                     av_freep(&ost->st->codec->extradata);
2875                 if (ost->logfile) {
2876                     fclose(ost->logfile);
2877                     ost->logfile = NULL;
2878                 }
2879                 av_fifo_free(ost->fifo); /* works even if fifo is not
2880                                              initialized but set to zero */
2881                 av_freep(&ost->st->codec->subtitle_header);
2882                 av_free(ost->resample_frame.data[0]);
2883                 av_free(ost->forced_kf_pts);
2884                 if (ost->video_resample)
2885                     sws_freeContext(ost->img_resample_ctx);
2886                 swr_free(&ost->swr);
2887                 av_dict_free(&ost->opts);
2888             }
2889         }
2890     }
2891     return ret;
2892 }
2893
2894 static int opt_frame_crop(const char *opt, const char *arg)
2895 {
2896     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2897     return AVERROR(EINVAL);
2898 }
2899
2900 static int opt_pad(const char *opt, const char *arg)
2901 {
2902     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2903     return -1;
2904 }
2905
2906 static double parse_frame_aspect_ratio(const char *arg)
2907 {
2908     int x = 0, y = 0;
2909     double ar = 0;
2910     const char *p;
2911     char *end;
2912
2913     p = strchr(arg, ':');
2914     if (p) {
2915         x = strtol(arg, &end, 10);
2916         if (end == p)
2917             y = strtol(end+1, &end, 10);
2918         if (x > 0 && y > 0)
2919             ar = (double)x / (double)y;
2920     } else
2921         ar = strtod(arg, NULL);
2922
2923     if (!ar) {
2924         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2925         exit_program(1);
2926     }
2927     return ar;
2928 }
2929
2930 static int opt_video_channel(const char *opt, const char *arg)
2931 {
2932     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2933     return opt_default("channel", arg);
2934 }
2935
2936 static int opt_video_standard(const char *opt, const char *arg)
2937 {
2938     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2939     return opt_default("standard", arg);
2940 }
2941
2942 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2943 {
2944     audio_codec_name = arg;
2945     return parse_option(o, "codec:a", arg, options);
2946 }
2947
2948 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2949 {
2950     video_codec_name = arg;
2951     return parse_option(o, "codec:v", arg, options);
2952 }
2953
2954 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2955 {
2956     subtitle_codec_name = arg;
2957     return parse_option(o, "codec:s", arg, options);
2958 }
2959
2960 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2961 {
2962     return parse_option(o, "codec:d", arg, options);
2963 }
2964
2965 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2966 {
2967     StreamMap *m = NULL;
2968     int i, negative = 0, file_idx;
2969     int sync_file_idx = -1, sync_stream_idx;
2970     char *p, *sync;
2971     char *map;
2972
2973     if (*arg == '-') {
2974         negative = 1;
2975         arg++;
2976     }
2977     map = av_strdup(arg);
2978
2979     /* parse sync stream first, just pick first matching stream */
2980     if (sync = strchr(map, ',')) {
2981         *sync = 0;
2982         sync_file_idx = strtol(sync + 1, &sync, 0);
2983         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2984             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2985             exit_program(1);
2986         }
2987         if (*sync)
2988             sync++;
2989         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2990             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2991                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2992                 sync_stream_idx = i;
2993                 break;
2994             }
2995         if (i == input_files[sync_file_idx].nb_streams) {
2996             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2997                                        "match any streams.\n", arg);
2998             exit_program(1);
2999         }
3000     }
3001
3002
3003     file_idx = strtol(map, &p, 0);
3004     if (file_idx >= nb_input_files || file_idx < 0) {
3005         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3006         exit_program(1);
3007     }
3008     if (negative)
3009         /* disable some already defined maps */
3010         for (i = 0; i < o->nb_stream_maps; i++) {
3011             m = &o->stream_maps[i];
3012             if (file_idx == m->file_index &&
3013                 check_stream_specifier(input_files[m->file_index].ctx,
3014                                        input_files[m->file_index].ctx->streams[m->stream_index],
3015                                        *p == ':' ? p + 1 : p) > 0)
3016                 m->disabled = 1;
3017         }
3018     else
3019         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3020             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3021                         *p == ':' ? p + 1 : p) <= 0)
3022                 continue;
3023             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3024                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3025             m = &o->stream_maps[o->nb_stream_maps - 1];
3026
3027             m->file_index   = file_idx;
3028             m->stream_index = i;
3029
3030             if (sync_file_idx >= 0) {
3031                 m->sync_file_index   = sync_file_idx;
3032                 m->sync_stream_index = sync_stream_idx;
3033             } else {
3034                 m->sync_file_index   = file_idx;
3035                 m->sync_stream_index = i;
3036             }
3037         }
3038
3039     if (!m) {
3040         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3041         exit_program(1);
3042     }
3043
3044     av_freep(&map);
3045     return 0;
3046 }
3047
3048 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3049 {
3050     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3051                                 &o->nb_attachments, o->nb_attachments + 1);
3052     o->attachments[o->nb_attachments - 1] = arg;
3053     return 0;
3054 }
3055
3056 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3057 {
3058     int n;
3059     AVStream *st;
3060     AudioChannelMap *m;
3061
3062     o->audio_channel_maps =
3063         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3064                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3065     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3066
3067     /* muted channel syntax */
3068     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3069     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3070         m->file_idx = m->stream_idx = -1;
3071         if (n == 1)
3072             m->ofile_idx = m->ostream_idx = -1;
3073         return 0;
3074     }
3075
3076     /* normal syntax */
3077     n = sscanf(arg, "%d.%d.%d:%d.%d",
3078                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3079                &m->ofile_idx, &m->ostream_idx);
3080
3081     if (n != 3 && n != 5) {
3082         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3083                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3084         exit_program(1);
3085     }
3086
3087     if (n != 5) // only file.stream.channel specified
3088         m->ofile_idx = m->ostream_idx = -1;
3089
3090     /* check input */
3091     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3092         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3093                m->file_idx);
3094         exit_program(1);
3095     }
3096     if (m->stream_idx < 0 ||
3097         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3098         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3099                m->file_idx, m->stream_idx);
3100         exit_program(1);
3101     }
3102     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3103     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3104         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3105                m->file_idx, m->stream_idx);
3106         exit_program(1);
3107     }
3108     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3109         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3110                m->file_idx, m->stream_idx, m->channel_idx);
3111         exit_program(1);
3112     }
3113     return 0;
3114 }
3115
3116 /**
3117  * Parse a metadata specifier in arg.
3118  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3119  * @param index for type c/p, chapter/program index is written here
3120  * @param stream_spec for type s, the stream specifier is written here
3121  */
3122 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3123 {
3124     if (*arg) {
3125         *type = *arg;
3126         switch (*arg) {
3127         case 'g':
3128             break;
3129         case 's':
3130             if (*(++arg) && *arg != ':') {
3131                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3132                 exit_program(1);
3133             }
3134             *stream_spec = *arg == ':' ? arg + 1 : "";
3135             break;
3136         case 'c':
3137         case 'p':
3138             if (*(++arg) == ':')
3139                 *index = strtol(++arg, NULL, 0);
3140             break;
3141         default:
3142             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3143             exit_program(1);
3144         }
3145     } else
3146         *type = 'g';
3147 }
3148
3149 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3150 {
3151     AVDictionary **meta_in = NULL;
3152     AVDictionary **meta_out;
3153     int i, ret = 0;
3154     char type_in, type_out;
3155     const char *istream_spec = NULL, *ostream_spec = NULL;
3156     int idx_in = 0, idx_out = 0;
3157
3158     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3159     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3160
3161     if (type_in == 'g' || type_out == 'g')
3162         o->metadata_global_manual = 1;
3163     if (type_in == 's' || type_out == 's')
3164         o->metadata_streams_manual = 1;
3165     if (type_in == 'c' || type_out == 'c')
3166         o->metadata_chapters_manual = 1;
3167
3168 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3169     if ((index) < 0 || (index) >= (nb_elems)) {\
3170         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3171                 (desc), (index));\
3172         exit_program(1);\
3173     }
3174
3175 #define SET_DICT(type, meta, context, index)\
3176         switch (type) {\
3177         case 'g':\
3178             meta = &context->metadata;\
3179             break;\
3180         case 'c':\
3181             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3182             meta = &context->chapters[index]->metadata;\
3183             break;\
3184         case 'p':\
3185             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3186             meta = &context->programs[index]->metadata;\
3187             break;\
3188         }\
3189
3190     SET_DICT(type_in, meta_in, ic, idx_in);
3191     SET_DICT(type_out, meta_out, oc, idx_out);
3192
3193     /* for input streams choose first matching stream */
3194     if (type_in == 's') {
3195         for (i = 0; i < ic->nb_streams; i++) {
3196             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3197                 meta_in = &ic->streams[i]->metadata;
3198                 break;
3199             } else if (ret < 0)
3200                 exit_program(1);
3201         }
3202         if (!meta_in) {
3203             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3204             exit_program(1);
3205         }
3206     }
3207
3208     if (type_out == 's') {
3209         for (i = 0; i < oc->nb_streams; i++) {
3210             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3211                 meta_out = &oc->streams[i]->metadata;
3212                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3213             } else if (ret < 0)
3214                 exit_program(1);
3215         }
3216     } else
3217         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3218
3219     return 0;
3220 }
3221
3222 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3223 {
3224     char buf[128];
3225     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3226     struct tm time = *gmtime((time_t*)&recording_timestamp);
3227     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3228     parse_option(o, "metadata", buf, options);
3229
3230     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3231                                  "tag instead.\n", opt);
3232     return 0;
3233 }
3234
3235 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3236 {
3237     const char *codec_string = encoder ? "encoder" : "decoder";
3238     AVCodec *codec;
3239
3240     codec = encoder ?
3241         avcodec_find_encoder_by_name(name) :
3242         avcodec_find_decoder_by_name(name);
3243     if(!codec) {
3244         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3245         exit_program(1);
3246     }
3247     if(codec->type != type) {
3248         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3249         exit_program(1);
3250     }
3251     return codec;
3252 }
3253
3254 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3255 {
3256     char *codec_name = NULL;
3257
3258     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3259     if (codec_name) {
3260         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3261         st->codec->codec_id = codec->id;
3262         return codec;
3263     } else
3264         return avcodec_find_decoder(st->codec->codec_id);
3265 }
3266
3267 /**
3268  * Add all the streams from the given input file to the global
3269  * list of input streams.
3270  */
3271 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3272 {
3273     int i, rfps, rfps_base;
3274     char *next, *codec_tag = NULL;
3275
3276     for (i = 0; i < ic->nb_streams; i++) {
3277         AVStream *st = ic->streams[i];
3278         AVCodecContext *dec = st->codec;
3279         InputStream *ist;
3280
3281         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3282         ist = &input_streams[nb_input_streams - 1];
3283         ist->st = st;
3284         ist->file_index = nb_input_files;
3285         ist->discard = 1;
3286         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3287
3288         ist->ts_scale = 1.0;
3289         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3290
3291         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3292         if (codec_tag) {
3293             uint32_t tag = strtol(codec_tag, &next, 0);
3294             if (*next)
3295                 tag = AV_RL32(codec_tag);
3296             st->codec->codec_tag = tag;
3297         }
3298
3299         ist->dec = choose_decoder(o, ic, st);
3300
3301         switch (dec->codec_type) {
3302         case AVMEDIA_TYPE_AUDIO:
3303             if(!ist->dec)
3304                 ist->dec = avcodec_find_decoder(dec->codec_id);
3305             if(o->audio_disable)
3306                 st->discard= AVDISCARD_ALL;
3307             break;
3308         case AVMEDIA_TYPE_VIDEO:
3309             if(!ist->dec)
3310                 ist->dec = avcodec_find_decoder(dec->codec_id);
3311             rfps      = ic->streams[i]->r_frame_rate.num;
3312             rfps_base = ic->streams[i]->r_frame_rate.den;
3313             if (dec->lowres) {
3314                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3315             }
3316
3317             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3318
3319                 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",
3320                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3321                        (float)rfps / rfps_base, rfps, rfps_base);
3322             }
3323
3324             if (o->video_disable)
3325                 st->discard= AVDISCARD_ALL;
3326             else if(video_discard)
3327                 st->discard= video_discard;
3328             break;
3329         case AVMEDIA_TYPE_DATA:
3330             if (o->data_disable)
3331                 st->discard= AVDISCARD_ALL;
3332             break;
3333         case AVMEDIA_TYPE_SUBTITLE:
3334             if(!ist->dec)
3335                 ist->dec = avcodec_find_decoder(dec->codec_id);
3336             if(o->subtitle_disable)
3337                 st->discard = AVDISCARD_ALL;
3338             break;
3339         case AVMEDIA_TYPE_ATTACHMENT:
3340         case AVMEDIA_TYPE_UNKNOWN:
3341             break;
3342         default:
3343             abort();
3344         }
3345     }
3346 }
3347
3348 static void assert_file_overwrite(const char *filename)
3349 {
3350     if ((!file_overwrite || no_file_overwrite) &&
3351         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3352          av_strstart(filename, "file:", NULL))) {
3353         if (avio_check(filename, 0) == 0) {
3354             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3355                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3356                 fflush(stderr);
3357                 term_exit();
3358                 signal(SIGINT, SIG_DFL);
3359                 if (!read_yesno()) {
3360                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3361                     exit_program(1);
3362                 }
3363                 term_init();
3364             }
3365             else {
3366                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3367                 exit_program(1);
3368             }
3369         }
3370     }
3371 }
3372
3373 static void dump_attachment(AVStream *st, const char *filename)
3374 {
3375     int ret;
3376     AVIOContext *out = NULL;
3377     AVDictionaryEntry *e;
3378
3379     if (!st->codec->extradata_size) {
3380         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3381                nb_input_files - 1, st->index);
3382         return;
3383     }
3384     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3385         filename = e->value;
3386     if (!*filename) {
3387         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3388                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3389         exit_program(1);
3390     }
3391
3392     assert_file_overwrite(filename);
3393
3394     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3395         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3396                filename);
3397         exit_program(1);
3398     }
3399
3400     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3401     avio_flush(out);
3402     avio_close(out);
3403 }
3404
3405 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3406 {
3407     AVFormatContext *ic;
3408     AVInputFormat *file_iformat = NULL;
3409     int err, i, ret;
3410     int64_t timestamp;
3411     uint8_t buf[128];
3412     AVDictionary **opts;
3413     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3414
3415     if (o->format) {
3416         if (!(file_iformat = av_find_input_format(o->format))) {
3417             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3418             exit_program(1);
3419         }
3420     }
3421
3422     if (!strcmp(filename, "-"))
3423         filename = "pipe:";
3424
3425     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3426                     !strcmp(filename, "/dev/stdin");
3427
3428     /* get default parameters from command line */
3429     ic = avformat_alloc_context();
3430     if (!ic) {
3431         print_error(filename, AVERROR(ENOMEM));
3432         exit_program(1);
3433     }
3434     if (o->nb_audio_sample_rate) {
3435         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3436         av_dict_set(&format_opts, "sample_rate", buf, 0);
3437     }
3438     if (o->nb_audio_channels) {
3439         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3440         av_dict_set(&format_opts, "channels", buf, 0);
3441     }
3442     if (o->nb_frame_rates) {
3443         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3444     }
3445     if (o->nb_frame_sizes) {
3446         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3447     }
3448     if (o->nb_frame_pix_fmts)
3449         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3450
3451     ic->video_codec_id   = video_codec_name ?
3452         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3453     ic->audio_codec_id   = audio_codec_name ?
3454         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3455     ic->subtitle_codec_id= subtitle_codec_name ?
3456         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3457     ic->flags |= AVFMT_FLAG_NONBLOCK;
3458     ic->interrupt_callback = int_cb;
3459
3460     if (loop_input) {
3461         av_log(NULL, AV_LOG_WARNING,
3462             "-loop_input is deprecated, use -loop 1\n"
3463             "Note, both loop options only work with -f image2\n"
3464         );
3465         ic->loop_input = loop_input;
3466     }
3467
3468     /* open the input file with generic avformat function */
3469     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3470     if (err < 0) {
3471         print_error(filename, err);
3472         exit_program(1);
3473     }
3474     assert_avoptions(format_opts);
3475
3476     /* apply forced codec ids */
3477     for (i = 0; i < ic->nb_streams; i++)
3478         choose_decoder(o, ic, ic->streams[i]);
3479
3480     /* Set AVCodecContext options for avformat_find_stream_info */
3481     opts = setup_find_stream_info_opts(ic, codec_opts);
3482     orig_nb_streams = ic->nb_streams;
3483
3484     /* If not enough info to get the stream parameters, we decode the
3485        first frames to get it. (used in mpeg case for example) */
3486     ret = avformat_find_stream_info(ic, opts);
3487     if (ret < 0) {
3488         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3489         avformat_close_input(&ic);
3490         exit_program(1);
3491     }
3492
3493     timestamp = o->start_time;
3494     /* add the stream start time */
3495     if (ic->start_time != AV_NOPTS_VALUE)
3496         timestamp += ic->start_time;
3497
3498     /* if seeking requested, we execute it */
3499     if (o->start_time != 0) {
3500         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3501         if (ret < 0) {
3502             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3503                    filename, (double)timestamp / AV_TIME_BASE);
3504         }
3505     }
3506
3507     /* update the current parameters so that they match the one of the input stream */
3508     add_input_streams(o, ic);
3509
3510     /* dump the file content */
3511     av_dump_format(ic, nb_input_files, filename, 0);
3512
3513     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3514     input_files[nb_input_files - 1].ctx        = ic;
3515     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3516     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3517     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3518     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3519
3520     for (i = 0; i < o->nb_dump_attachment; i++) {
3521         int j;
3522
3523         for (j = 0; j < ic->nb_streams; j++) {
3524             AVStream *st = ic->streams[j];
3525
3526             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3527                 dump_attachment(st, o->dump_attachment[i].u.str);
3528         }
3529     }
3530
3531     for (i = 0; i < orig_nb_streams; i++)
3532         av_dict_free(&opts[i]);
3533     av_freep(&opts);
3534
3535     reset_options(o, 1);
3536     return 0;
3537 }
3538
3539 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3540 {
3541     char *p;
3542     int n = 1, i;
3543
3544     for (p = kf; *p; p++)
3545         if (*p == ',')
3546             n++;
3547     ost->forced_kf_count = n;
3548     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3549     if (!ost->forced_kf_pts) {
3550         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3551         exit_program(1);
3552     }
3553     for (i = 0; i < n; i++) {
3554         p = i ? strchr(p, ',') + 1 : kf;
3555         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3556     }
3557 }
3558
3559 static uint8_t *get_line(AVIOContext *s)
3560 {
3561     AVIOContext *line;
3562     uint8_t *buf;
3563     char c;
3564
3565     if (avio_open_dyn_buf(&line) < 0) {
3566         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3567         exit_program(1);
3568     }
3569
3570     while ((c = avio_r8(s)) && c != '\n')
3571         avio_w8(line, c);
3572     avio_w8(line, 0);
3573     avio_close_dyn_buf(line, &buf);
3574
3575     return buf;
3576 }
3577
3578 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3579 {
3580     int i, ret = 1;
3581     char filename[1000];
3582     const char *base[3] = { getenv("AVCONV_DATADIR"),
3583                             getenv("HOME"),
3584                             AVCONV_DATADIR,
3585                             };
3586
3587     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3588         if (!base[i])
3589             continue;
3590         if (codec_name) {
3591             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3592                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3593             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3594         }
3595         if (ret) {
3596             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3597                      i != 1 ? "" : "/.avconv", preset_name);
3598             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3599         }
3600     }
3601     return ret;
3602 }
3603
3604 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3605 {
3606     char *codec_name = NULL;
3607
3608     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3609     if (!codec_name) {
3610         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3611                                                   NULL, ost->st->codec->codec_type);
3612         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3613     } else if (!strcmp(codec_name, "copy"))
3614         ost->stream_copy = 1;
3615     else {
3616         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3617         ost->st->codec->codec_id = ost->enc->id;
3618     }
3619 }
3620
3621 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3622 {
3623     OutputStream *ost;
3624     AVStream *st = avformat_new_stream(oc, NULL);
3625     int idx      = oc->nb_streams - 1, ret = 0;
3626     char *bsf = NULL, *next, *codec_tag = NULL;
3627     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3628     double qscale = -1;
3629     char *buf = NULL, *arg = NULL, *preset = NULL;
3630     AVIOContext *s = NULL;
3631
3632     if (!st) {
3633         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3634         exit_program(1);
3635     }
3636
3637     if (oc->nb_streams - 1 < o->nb_streamid_map)
3638         st->id = o->streamid_map[oc->nb_streams - 1];
3639
3640     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3641                                 nb_output_streams + 1);
3642     ost = &output_streams[nb_output_streams - 1];
3643     ost->file_index = nb_output_files;
3644     ost->index = idx;
3645     ost->st    = st;
3646     st->codec->codec_type = type;
3647     choose_encoder(o, oc, ost);
3648     if (ost->enc) {
3649         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3650     }
3651
3652     avcodec_get_context_defaults3(st->codec, ost->enc);
3653     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3654
3655     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3656     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3657         do  {
3658             buf = get_line(s);
3659             if (!buf[0] || buf[0] == '#') {
3660                 av_free(buf);
3661                 continue;
3662             }
3663             if (!(arg = strchr(buf, '='))) {
3664                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3665                 exit_program(1);
3666