ffmpeg: handle stream copy timebase selection for mp4 as if it had VFPS set.
[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 void *samples;
172 static uint8_t *input_tmp= NULL;
173
174 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
175
176 typedef struct InputStream {
177     int file_index;
178     AVStream *st;
179     int discard;             /* true if stream data should be discarded */
180     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
181     AVCodec *dec;
182
183     int64_t       start;     /* time when read started */
184     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
185                                 is not defined */
186     int64_t       pts;       /* current pts */
187     double ts_scale;
188     int is_start;            /* is 1 at the start and after a discontinuity */
189     int showed_multi_packet_warning;
190     AVDictionary *opts;
191 } InputStream;
192
193 typedef struct InputFile {
194     AVFormatContext *ctx;
195     int eof_reached;      /* true if eof reached */
196     int ist_index;        /* index of first stream in input_streams */
197     int buffer_size;      /* current total buffer size */
198     int64_t ts_offset;
199     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
200                              from ctx.nb_streams if new streams appear during av_read_frame() */
201     int rate_emu;
202 } InputFile;
203
204 typedef struct OutputStream {
205     int file_index;          /* file index */
206     int index;               /* stream index in the output file */
207     int source_index;        /* InputStream index */
208     AVStream *st;            /* stream in the output file */
209     int encoding_needed;     /* true if encoding needed for this stream */
210     int frame_number;
211     /* input pts and corresponding output pts
212        for A/V sync */
213     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
214     struct InputStream *sync_ist; /* input stream to sync against */
215     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
216     AVBitStreamFilterContext *bitstream_filters;
217     AVCodec *enc;
218     int64_t max_frames;
219
220     /* video only */
221     int video_resample;
222     AVFrame resample_frame;              /* temporary frame for image resampling */
223     struct SwsContext *img_resample_ctx; /* for image resampling */
224     int resample_height;
225     int resample_width;
226     int resample_pix_fmt;
227     AVRational frame_rate;
228     int force_fps;
229     int top_field_first;
230
231     float frame_aspect_ratio;
232
233     /* forced key frames */
234     int64_t *forced_kf_pts;
235     int forced_kf_count;
236     int forced_kf_index;
237
238     /* audio only */
239     int audio_resample;
240     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
241     int audio_channels_mapped;           ///< number of channels in audio_channels_map
242     int resample_sample_fmt;
243     int resample_channels;
244     int resample_sample_rate;
245     float rematrix_volume;
246     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
247     FILE *logfile;
248
249     struct SwrContext *swr;
250
251 #if CONFIG_AVFILTER
252     AVFilterContext *output_video_filter;
253     AVFilterContext *input_video_filter;
254     AVFilterBufferRef *picref;
255     char *avfilter;
256     AVFilterGraph *graph;
257 #endif
258
259     int64_t sws_flags;
260     AVDictionary *opts;
261     int is_past_recording_time;
262     int stream_copy;
263     const char *attachment_filename;
264     int copy_initial_nonkeyframes;
265 } OutputStream;
266
267
268 #if HAVE_TERMIOS_H
269
270 /* init terminal so that we can grab keys */
271 static struct termios oldtty;
272 #endif
273
274 typedef struct OutputFile {
275     AVFormatContext *ctx;
276     AVDictionary *opts;
277     int ost_index;       /* index of the first stream in output_streams */
278     int64_t recording_time; /* desired length of the resulting file in microseconds */
279     int64_t start_time;     /* start time in microseconds */
280     uint64_t limit_filesize;
281 } OutputFile;
282
283 static InputStream *input_streams = NULL;
284 static int         nb_input_streams = 0;
285 static InputFile   *input_files   = NULL;
286 static int         nb_input_files   = 0;
287
288 static OutputStream *output_streams = NULL;
289 static int        nb_output_streams = 0;
290 static OutputFile   *output_files   = NULL;
291 static int        nb_output_files   = 0;
292
293 typedef struct OptionsContext {
294     /* input/output options */
295     int64_t start_time;
296     const char *format;
297
298     SpecifierOpt *codec_names;
299     int        nb_codec_names;
300     SpecifierOpt *audio_channels;
301     int        nb_audio_channels;
302     SpecifierOpt *audio_sample_rate;
303     int        nb_audio_sample_rate;
304     SpecifierOpt *rematrix_volume;
305     int        nb_rematrix_volume;
306     SpecifierOpt *frame_rates;
307     int        nb_frame_rates;
308     SpecifierOpt *frame_sizes;
309     int        nb_frame_sizes;
310     SpecifierOpt *frame_pix_fmts;
311     int        nb_frame_pix_fmts;
312
313     /* input options */
314     int64_t input_ts_offset;
315     int rate_emu;
316
317     SpecifierOpt *ts_scale;
318     int        nb_ts_scale;
319     SpecifierOpt *dump_attachment;
320     int        nb_dump_attachment;
321
322     /* output options */
323     StreamMap *stream_maps;
324     int     nb_stream_maps;
325     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
326     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
327     /* first item specifies output metadata, second is input */
328     MetadataMap (*meta_data_maps)[2];
329     int nb_meta_data_maps;
330     int metadata_global_manual;
331     int metadata_streams_manual;
332     int metadata_chapters_manual;
333     const char **attachments;
334     int       nb_attachments;
335
336     int chapters_input_file;
337
338     int64_t recording_time;
339     uint64_t limit_filesize;
340     float mux_preload;
341     float mux_max_delay;
342
343     int video_disable;
344     int audio_disable;
345     int subtitle_disable;
346     int data_disable;
347
348     /* indexed by output file stream index */
349     int   *streamid_map;
350     int nb_streamid_map;
351
352     SpecifierOpt *metadata;
353     int        nb_metadata;
354     SpecifierOpt *max_frames;
355     int        nb_max_frames;
356     SpecifierOpt *bitstream_filters;
357     int        nb_bitstream_filters;
358     SpecifierOpt *codec_tags;
359     int        nb_codec_tags;
360     SpecifierOpt *sample_fmts;
361     int        nb_sample_fmts;
362     SpecifierOpt *qscale;
363     int        nb_qscale;
364     SpecifierOpt *forced_key_frames;
365     int        nb_forced_key_frames;
366     SpecifierOpt *force_fps;
367     int        nb_force_fps;
368     SpecifierOpt *frame_aspect_ratios;
369     int        nb_frame_aspect_ratios;
370     SpecifierOpt *rc_overrides;
371     int        nb_rc_overrides;
372     SpecifierOpt *intra_matrices;
373     int        nb_intra_matrices;
374     SpecifierOpt *inter_matrices;
375     int        nb_inter_matrices;
376     SpecifierOpt *top_field_first;
377     int        nb_top_field_first;
378     SpecifierOpt *presets;
379     int        nb_presets;
380     SpecifierOpt *copy_initial_nonkeyframes;
381     int        nb_copy_initial_nonkeyframes;
382 #if CONFIG_AVFILTER
383     SpecifierOpt *filters;
384     int        nb_filters;
385 #endif
386 } OptionsContext;
387
388 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
389 {\
390     int i, ret;\
391     for (i = 0; i < o->nb_ ## name; i++) {\
392         char *spec = o->name[i].specifier;\
393         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
394             outvar = o->name[i].u.type;\
395         else if (ret < 0)\
396             exit_program(1);\
397     }\
398 }
399
400 static void reset_options(OptionsContext *o, int is_input)
401 {
402     const OptionDef *po = options;
403     OptionsContext bak= *o;
404
405     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
406     while (po->name) {
407         void *dst = (uint8_t*)o + po->u.off;
408
409         if (po->flags & OPT_SPEC) {
410             SpecifierOpt **so = dst;
411             int i, *count = (int*)(so + 1);
412             for (i = 0; i < *count; i++) {
413                 av_freep(&(*so)[i].specifier);
414                 if (po->flags & OPT_STRING)
415                     av_freep(&(*so)[i].u.str);
416             }
417             av_freep(so);
418             *count = 0;
419         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
420             av_freep(dst);
421         po++;
422     }
423
424     av_freep(&o->stream_maps);
425     av_freep(&o->audio_channel_maps);
426     av_freep(&o->meta_data_maps);
427     av_freep(&o->streamid_map);
428
429     memset(o, 0, sizeof(*o));
430
431     if(is_input) o->recording_time = bak.recording_time;
432     else         o->recording_time = INT64_MAX;
433     o->mux_max_delay  = 0.7;
434     o->limit_filesize = UINT64_MAX;
435     o->chapters_input_file = INT_MAX;
436
437     uninit_opts();
438     init_opts();
439 }
440
441 #if CONFIG_AVFILTER
442
443 static int configure_video_filters(InputStream *ist, OutputStream *ost)
444 {
445     AVFilterContext *last_filter, *filter;
446     /** filter graph containing all filters including input & output */
447     AVCodecContext *codec = ost->st->codec;
448     AVCodecContext *icodec = ist->st->codec;
449     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
450     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
451     AVRational sample_aspect_ratio;
452     char args[255];
453     int ret;
454
455     ost->graph = avfilter_graph_alloc();
456
457     if (ist->st->sample_aspect_ratio.num){
458         sample_aspect_ratio = ist->st->sample_aspect_ratio;
459     }else
460         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
461
462     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
463              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
464              sample_aspect_ratio.num, sample_aspect_ratio.den);
465
466     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
467                                        "src", args, NULL, ost->graph);
468     if (ret < 0)
469         return ret;
470 #if FF_API_OLD_VSINK_API
471     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
472                                        "out", NULL, pix_fmts, ost->graph);
473 #else
474     buffersink_params->pixel_fmts = pix_fmts;
475     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
476                                        "out", NULL, buffersink_params, ost->graph);
477 #endif
478     av_freep(&buffersink_params);
479     if (ret < 0)
480         return ret;
481     last_filter = ost->input_video_filter;
482
483     if (codec->width  != icodec->width || codec->height != icodec->height) {
484         snprintf(args, 255, "%d:%d:flags=0x%X",
485                  codec->width,
486                  codec->height,
487                  (unsigned)ost->sws_flags);
488         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
489                                                 NULL, args, NULL, ost->graph)) < 0)
490             return ret;
491         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
492             return ret;
493         last_filter = filter;
494     }
495
496     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
497     ost->graph->scale_sws_opts = av_strdup(args);
498
499     if (ost->avfilter) {
500         AVFilterInOut *outputs = avfilter_inout_alloc();
501         AVFilterInOut *inputs  = avfilter_inout_alloc();
502
503         outputs->name    = av_strdup("in");
504         outputs->filter_ctx = last_filter;
505         outputs->pad_idx = 0;
506         outputs->next    = NULL;
507
508         inputs->name    = av_strdup("out");
509         inputs->filter_ctx = ost->output_video_filter;
510         inputs->pad_idx = 0;
511         inputs->next    = NULL;
512
513         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
514             return ret;
515         av_freep(&ost->avfilter);
516     } else {
517         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
518             return ret;
519     }
520
521     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
522         return ret;
523
524     codec->width  = ost->output_video_filter->inputs[0]->w;
525     codec->height = ost->output_video_filter->inputs[0]->h;
526     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
527         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
528         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
529         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
530
531     return 0;
532 }
533 #endif /* CONFIG_AVFILTER */
534
535 static void term_exit(void)
536 {
537     av_log(NULL, AV_LOG_QUIET, "%s", "");
538 #if HAVE_TERMIOS_H
539     if(!run_as_daemon)
540         tcsetattr (0, TCSANOW, &oldtty);
541 #endif
542 }
543
544 static volatile int received_sigterm = 0;
545
546 static void sigterm_handler(int sig)
547 {
548     received_sigterm = sig;
549     received_nb_signals++;
550     term_exit();
551 }
552
553 static void term_init(void)
554 {
555 #if HAVE_TERMIOS_H
556     if(!run_as_daemon){
557     struct termios tty;
558
559     tcgetattr (0, &tty);
560     oldtty = tty;
561     atexit(term_exit);
562
563     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
564                           |INLCR|IGNCR|ICRNL|IXON);
565     tty.c_oflag |= OPOST;
566     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
567     tty.c_cflag &= ~(CSIZE|PARENB);
568     tty.c_cflag |= CS8;
569     tty.c_cc[VMIN] = 1;
570     tty.c_cc[VTIME] = 0;
571
572     tcsetattr (0, TCSANOW, &tty);
573     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
574     }
575 #endif
576     avformat_network_deinit();
577
578     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
579     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
580 #ifdef SIGXCPU
581     signal(SIGXCPU, sigterm_handler);
582 #endif
583 }
584
585 /* read a key without blocking */
586 static int read_key(void)
587 {
588     unsigned char ch;
589 #if HAVE_TERMIOS_H
590     int n = 1;
591     struct timeval tv;
592     fd_set rfds;
593
594     FD_ZERO(&rfds);
595     FD_SET(0, &rfds);
596     tv.tv_sec = 0;
597     tv.tv_usec = 0;
598     n = select(1, &rfds, NULL, NULL, &tv);
599     if (n > 0) {
600         n = read(0, &ch, 1);
601         if (n == 1)
602             return ch;
603
604         return n;
605     }
606 #elif HAVE_KBHIT
607 #    if HAVE_PEEKNAMEDPIPE
608     static int is_pipe;
609     static HANDLE input_handle;
610     DWORD dw, nchars;
611     if(!input_handle){
612         input_handle = GetStdHandle(STD_INPUT_HANDLE);
613         is_pipe = !GetConsoleMode(input_handle, &dw);
614     }
615
616     if (stdin->_cnt > 0) {
617         read(0, &ch, 1);
618         return ch;
619     }
620     if (is_pipe) {
621         /* When running under a GUI, you will end here. */
622         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
623             return -1;
624         //Read it
625         if(nchars != 0) {
626             read(0, &ch, 1);
627             return ch;
628         }else{
629             return -1;
630         }
631     }
632 #    endif
633     if(kbhit())
634         return(getch());
635 #endif
636     return -1;
637 }
638
639 static int decode_interrupt_cb(void *ctx)
640 {
641     return received_nb_signals > 1;
642 }
643
644 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
645
646 void av_noreturn exit_program(int ret)
647 {
648     int i;
649
650     /* close files */
651     for(i=0;i<nb_output_files;i++) {
652         AVFormatContext *s = output_files[i].ctx;
653         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
654             avio_close(s->pb);
655         avformat_free_context(s);
656         av_dict_free(&output_files[i].opts);
657     }
658     for(i=0;i<nb_input_files;i++) {
659         av_close_input_file(input_files[i].ctx);
660     }
661     for (i = 0; i < nb_input_streams; i++)
662         av_dict_free(&input_streams[i].opts);
663
664     if (vstats_file)
665         fclose(vstats_file);
666     av_free(vstats_filename);
667
668     av_freep(&input_streams);
669     av_freep(&input_files);
670     av_freep(&output_streams);
671     av_freep(&output_files);
672
673     uninit_opts();
674     av_free(audio_buf);
675     av_free(audio_out);
676     allocated_audio_buf_size= allocated_audio_out_size= 0;
677     av_free(samples);
678
679 #if CONFIG_AVFILTER
680     avfilter_uninit();
681 #endif
682     avformat_network_deinit();
683
684     av_freep(&input_tmp);
685
686     if (received_sigterm) {
687         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
688                (int) received_sigterm);
689         exit (255);
690     }
691
692     exit(ret); /* not all OS-es handle main() return value */
693 }
694
695 static void assert_avoptions(AVDictionary *m)
696 {
697     AVDictionaryEntry *t;
698     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
699         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
700         exit_program(1);
701     }
702 }
703
704 static void assert_codec_experimental(AVCodecContext *c, int encoder)
705 {
706     const char *codec_string = encoder ? "encoder" : "decoder";
707     AVCodec *codec;
708     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
709         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
710         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
711                 "results.\nAdd '-strict experimental' if you want to use it.\n",
712                 codec_string, c->codec->name);
713         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
714         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
715             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
716                    codec_string, codec->name);
717         exit_program(1);
718     }
719 }
720
721 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
722 {
723     if(codec && codec->sample_fmts){
724         const enum AVSampleFormat *p= codec->sample_fmts;
725         for(; *p!=-1; p++){
726             if(*p == st->codec->sample_fmt)
727                 break;
728         }
729         if (*p == -1) {
730             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
731                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
732             if(av_get_sample_fmt_name(st->codec->sample_fmt))
733             av_log(NULL, AV_LOG_WARNING,
734                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
735                    av_get_sample_fmt_name(st->codec->sample_fmt),
736                    codec->name,
737                    av_get_sample_fmt_name(codec->sample_fmts[0]));
738             st->codec->sample_fmt = codec->sample_fmts[0];
739         }
740     }
741 }
742
743 static void choose_sample_rate(AVStream *st, AVCodec *codec)
744 {
745     if(codec && codec->supported_samplerates){
746         const int *p= codec->supported_samplerates;
747         int best=0;
748         int best_dist=INT_MAX;
749         for(; *p; p++){
750             int dist= abs(st->codec->sample_rate - *p);
751             if(dist < best_dist){
752                 best_dist= dist;
753                 best= *p;
754             }
755         }
756         if(best_dist){
757             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
758         }
759         st->codec->sample_rate= best;
760     }
761 }
762
763 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
764 {
765     if(codec && codec->pix_fmts){
766         const enum PixelFormat *p= codec->pix_fmts;
767         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
768         enum PixelFormat best= PIX_FMT_NONE;
769         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
770             if(st->codec->codec_id==CODEC_ID_MJPEG){
771                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
772             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
773                 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};
774             }
775         }
776         for (; *p != PIX_FMT_NONE; p++) {
777             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
778             if(*p == st->codec->pix_fmt)
779                 break;
780         }
781         if (*p == PIX_FMT_NONE) {
782             if(st->codec->pix_fmt != PIX_FMT_NONE)
783                 av_log(NULL, AV_LOG_WARNING,
784                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
785                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
786                         codec->name,
787                         av_pix_fmt_descriptors[best].name);
788             st->codec->pix_fmt = best;
789         }
790     }
791 }
792
793 static double get_sync_ipts(const OutputStream *ost)
794 {
795     const InputStream *ist = ost->sync_ist;
796     OutputFile *of = &output_files[ost->file_index];
797     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
798 }
799
800 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
801 {
802     int ret;
803
804     while(bsfc){
805         AVPacket new_pkt= *pkt;
806         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
807                                           &new_pkt.data, &new_pkt.size,
808                                           pkt->data, pkt->size,
809                                           pkt->flags & AV_PKT_FLAG_KEY);
810         if(a>0){
811             av_free_packet(pkt);
812             new_pkt.destruct= av_destruct_packet;
813         } else if(a<0){
814             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
815                    bsfc->filter->name, pkt->stream_index,
816                    avctx->codec ? avctx->codec->name : "copy");
817             print_error("", a);
818             if (exit_on_error)
819                 exit_program(1);
820         }
821         *pkt= new_pkt;
822
823         bsfc= bsfc->next;
824     }
825
826     ret= av_interleaved_write_frame(s, pkt);
827     if(ret < 0){
828         print_error("av_interleaved_write_frame()", ret);
829         exit_program(1);
830     }
831 }
832
833 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
834 {
835     int fill_char = 0x00;
836     if (sample_fmt == AV_SAMPLE_FMT_U8)
837         fill_char = 0x80;
838     memset(buf, fill_char, size);
839 }
840
841 static void do_audio_out(AVFormatContext *s,
842                          OutputStream *ost,
843                          InputStream *ist,
844                          unsigned char *buf, int size)
845 {
846     uint8_t *buftmp;
847     int64_t audio_out_size, audio_buf_size;
848     int64_t allocated_for_size= size;
849
850     int size_out, frame_bytes, ret, resample_changed;
851     AVCodecContext *enc= ost->st->codec;
852     AVCodecContext *dec= ist->st->codec;
853     int osize = av_get_bytes_per_sample(enc->sample_fmt);
854     int isize = av_get_bytes_per_sample(dec->sample_fmt);
855     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
856
857 need_realloc:
858     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
859     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
860     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
861     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
862     audio_buf_size*= osize*enc->channels;
863
864     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
865     if(coded_bps > 8*osize)
866         audio_out_size= audio_out_size * coded_bps / (8*osize);
867     audio_out_size += FF_MIN_BUFFER_SIZE;
868
869     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
870         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
871         exit_program(1);
872     }
873
874     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
875     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
876     if (!audio_buf || !audio_out){
877         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
878         exit_program(1);
879     }
880
881     if (enc->channels != dec->channels
882      || enc->sample_fmt != dec->sample_fmt
883      || enc->sample_rate!= dec->sample_rate
884     )
885         ost->audio_resample = 1;
886
887     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
888                        ost->resample_channels    != dec->channels   ||
889                        ost->resample_sample_rate != dec->sample_rate;
890
891     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
892         if (resample_changed) {
893             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",
894                    ist->file_index, ist->st->index,
895                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
896                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
897             ost->resample_sample_fmt  = dec->sample_fmt;
898             ost->resample_channels    = dec->channels;
899             ost->resample_sample_rate = dec->sample_rate;
900             swr_free(&ost->swr);
901         }
902         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
903         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
904             ost->resample_sample_fmt  == enc->sample_fmt &&
905             ost->resample_channels    == enc->channels   &&
906             ost->resample_sample_rate == enc->sample_rate) {
907             //ost->swr = NULL;
908             ost->audio_resample = 0;
909         } else {
910             ost->swr = swr_alloc_set_opts(ost->swr,
911                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
912                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
913                                           0, NULL);
914             if (ost->audio_channels_mapped)
915                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
916             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
917             if (ost->audio_channels_mapped) {
918                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
919                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
920             }
921             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
922             av_opt_set_int(ost->swr, "och", enc->channels, 0);
923             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
924             if(ost->swr && swr_init(ost->swr) < 0){
925                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
926                 swr_free(&ost->swr);
927             }
928
929             if (!ost->swr) {
930                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
931                         dec->channels, dec->sample_rate,
932                         enc->channels, enc->sample_rate);
933                 exit_program(1);
934             }
935         }
936     }
937
938     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
939
940     if(audio_sync_method){
941         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
942                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
943         int idelta = delta * dec->sample_rate / enc->sample_rate;
944         int byte_delta = idelta * isize * dec->channels;
945
946         //FIXME resample delay
947         if(fabs(delta) > 50){
948             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
949                 if(byte_delta < 0){
950                     byte_delta= FFMAX(byte_delta, -size);
951                     size += byte_delta;
952                     buf  -= byte_delta;
953                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
954                            -byte_delta / (isize * dec->channels));
955                     if(!size)
956                         return;
957                     ist->is_start=0;
958                 }else{
959                     input_tmp= av_realloc(input_tmp, byte_delta + size);
960
961                     if(byte_delta > allocated_for_size - size){
962                         allocated_for_size= byte_delta + (int64_t)size;
963                         goto need_realloc;
964                     }
965                     ist->is_start=0;
966
967                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
968                     memcpy(input_tmp + byte_delta, buf, size);
969                     buf= input_tmp;
970                     size += byte_delta;
971                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
972                 }
973             }else if(audio_sync_method>1){
974                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
975                 av_assert0(ost->audio_resample);
976                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
977                        delta, comp, enc->sample_rate);
978 //                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));
979                 swr_compensate(ost->swr, comp, enc->sample_rate);
980             }
981         }
982     }else
983         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
984                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
985
986     if (ost->audio_resample) {
987         buftmp = audio_buf;
988         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
989                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
990         size_out = size_out * enc->channels * osize;
991     } else {
992         buftmp = buf;
993         size_out = size;
994     }
995
996     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
997
998     /* now encode as many frames as possible */
999     if (enc->frame_size > 1) {
1000         /* output resampled raw samples */
1001         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1002             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1003             exit_program(1);
1004         }
1005         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1006
1007         frame_bytes = enc->frame_size * osize * enc->channels;
1008
1009         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1010             AVPacket pkt;
1011             av_init_packet(&pkt);
1012
1013             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1014
1015             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1016
1017             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1018                                        (short *)audio_buf);
1019             if (ret < 0) {
1020                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1021                 exit_program(1);
1022             }
1023             audio_size += ret;
1024             pkt.stream_index= ost->index;
1025             pkt.data= audio_out;
1026             pkt.size= ret;
1027             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1028                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1029             pkt.flags |= AV_PKT_FLAG_KEY;
1030             write_frame(s, &pkt, enc, ost->bitstream_filters);
1031
1032             ost->sync_opts += enc->frame_size;
1033         }
1034     } else {
1035         AVPacket pkt;
1036         av_init_packet(&pkt);
1037
1038         ost->sync_opts += size_out / (osize * enc->channels);
1039
1040         /* output a pcm frame */
1041         /* determine the size of the coded buffer */
1042         size_out /= osize;
1043         if (coded_bps)
1044             size_out = size_out*coded_bps/8;
1045
1046         if(size_out > audio_out_size){
1047             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1048             exit_program(1);
1049         }
1050
1051         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1052         ret = avcodec_encode_audio(enc, audio_out, size_out,
1053                                    (short *)buftmp);
1054         if (ret < 0) {
1055             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1056             exit_program(1);
1057         }
1058         audio_size += ret;
1059         pkt.stream_index= ost->index;
1060         pkt.data= audio_out;
1061         pkt.size= ret;
1062         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1063             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1064         pkt.flags |= AV_PKT_FLAG_KEY;
1065         write_frame(s, &pkt, enc, ost->bitstream_filters);
1066     }
1067 }
1068
1069 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1070 {
1071     AVCodecContext *dec;
1072     AVPicture *picture2;
1073     AVPicture picture_tmp;
1074     uint8_t *buf = 0;
1075
1076     dec = ist->st->codec;
1077
1078     /* deinterlace : must be done before any resize */
1079     if (do_deinterlace) {
1080         int size;
1081
1082         /* create temporary picture */
1083         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1084         buf = av_malloc(size);
1085         if (!buf)
1086             return;
1087
1088         picture2 = &picture_tmp;
1089         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1090
1091         if(avpicture_deinterlace(picture2, picture,
1092                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1093             /* if error, do not deinterlace */
1094             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1095             av_free(buf);
1096             buf = NULL;
1097             picture2 = picture;
1098         }
1099     } else {
1100         picture2 = picture;
1101     }
1102
1103     if (picture != picture2)
1104         *picture = *picture2;
1105     *bufp = buf;
1106 }
1107
1108 static void do_subtitle_out(AVFormatContext *s,
1109                             OutputStream *ost,
1110                             InputStream *ist,
1111                             AVSubtitle *sub,
1112                             int64_t pts)
1113 {
1114     static uint8_t *subtitle_out = NULL;
1115     int subtitle_out_max_size = 1024 * 1024;
1116     int subtitle_out_size, nb, i;
1117     AVCodecContext *enc;
1118     AVPacket pkt;
1119
1120     if (pts == AV_NOPTS_VALUE) {
1121         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1122         if (exit_on_error)
1123             exit_program(1);
1124         return;
1125     }
1126
1127     enc = ost->st->codec;
1128
1129     if (!subtitle_out) {
1130         subtitle_out = av_malloc(subtitle_out_max_size);
1131     }
1132
1133     /* Note: DVB subtitle need one packet to draw them and one other
1134        packet to clear them */
1135     /* XXX: signal it in the codec context ? */
1136     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1137         nb = 2;
1138     else
1139         nb = 1;
1140
1141     for(i = 0; i < nb; i++) {
1142         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1143         // start_display_time is required to be 0
1144         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1145         sub->end_display_time -= sub->start_display_time;
1146         sub->start_display_time = 0;
1147         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1148                                                     subtitle_out_max_size, sub);
1149         if (subtitle_out_size < 0) {
1150             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1151             exit_program(1);
1152         }
1153
1154         av_init_packet(&pkt);
1155         pkt.stream_index = ost->index;
1156         pkt.data = subtitle_out;
1157         pkt.size = subtitle_out_size;
1158         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1159         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1160             /* XXX: the pts correction is handled here. Maybe handling
1161                it in the codec would be better */
1162             if (i == 0)
1163                 pkt.pts += 90 * sub->start_display_time;
1164             else
1165                 pkt.pts += 90 * sub->end_display_time;
1166         }
1167         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1168     }
1169 }
1170
1171 static int bit_buffer_size= 1024*256;
1172 static uint8_t *bit_buffer= NULL;
1173
1174 static void do_video_resample(OutputStream *ost,
1175                               InputStream *ist,
1176                               AVFrame *in_picture,
1177                               AVFrame **out_picture)
1178 {
1179 #if CONFIG_AVFILTER
1180     *out_picture = in_picture;
1181 #else
1182     AVCodecContext *dec = ist->st->codec;
1183     AVCodecContext *enc = ost->st->codec;
1184     int resample_changed = ost->resample_width   != dec->width  ||
1185                            ost->resample_height  != dec->height ||
1186                            ost->resample_pix_fmt != dec->pix_fmt;
1187
1188     *out_picture = in_picture;
1189     if (resample_changed) {
1190         av_log(NULL, AV_LOG_INFO,
1191                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1192                ist->file_index, ist->st->index,
1193                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1194                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1195         ost->resample_width   = dec->width;
1196         ost->resample_height  = dec->height;
1197         ost->resample_pix_fmt = dec->pix_fmt;
1198     }
1199
1200     ost->video_resample = dec->width   != enc->width  ||
1201                           dec->height  != enc->height ||
1202                           dec->pix_fmt != enc->pix_fmt;
1203
1204     if (ost->video_resample) {
1205         *out_picture = &ost->resample_frame;
1206         if (!ost->img_resample_ctx || resample_changed) {
1207             /* initialize the destination picture */
1208             if (!ost->resample_frame.data[0]) {
1209                 avcodec_get_frame_defaults(&ost->resample_frame);
1210                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1211                                     enc->width, enc->height)) {
1212                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1213                     exit_program(1);
1214                 }
1215             }
1216             /* initialize a new scaler context */
1217             sws_freeContext(ost->img_resample_ctx);
1218             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1219                                                    enc->width, enc->height, enc->pix_fmt,
1220                                                    ost->sws_flags, NULL, NULL, NULL);
1221             if (ost->img_resample_ctx == NULL) {
1222                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1223                 exit_program(1);
1224             }
1225         }
1226         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1227               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1228     }
1229 #endif
1230 }
1231
1232
1233 static void do_video_out(AVFormatContext *s,
1234                          OutputStream *ost,
1235                          InputStream *ist,
1236                          AVFrame *in_picture,
1237                          int *frame_size, float quality)
1238 {
1239     int nb_frames, i, ret, format_video_sync;
1240     AVFrame *final_picture;
1241     AVCodecContext *enc;
1242     double sync_ipts;
1243     double duration = 0;
1244
1245     enc = ost->st->codec;
1246
1247     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1248         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1249         if(ist->st->avg_frame_rate.num)
1250             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1251
1252         duration /= av_q2d(enc->time_base);
1253     }
1254
1255     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1256
1257     /* by default, we output a single frame */
1258     nb_frames = 1;
1259
1260     *frame_size = 0;
1261
1262     format_video_sync = video_sync_method;
1263     if (format_video_sync < 0)
1264         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1265
1266     if (format_video_sync) {
1267         double vdelta = sync_ipts - ost->sync_opts + duration;
1268         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1269         if (vdelta < -1.1)
1270             nb_frames = 0;
1271         else if (format_video_sync == 2) {
1272             if(vdelta<=-0.6){
1273                 nb_frames=0;
1274             }else if(vdelta>0.6)
1275                 ost->sync_opts= lrintf(sync_ipts);
1276         }else if (vdelta > 1.1)
1277             nb_frames = lrintf(vdelta);
1278 //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);
1279         if (nb_frames == 0){
1280             ++nb_frames_drop;
1281             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1282         }else if (nb_frames > 1) {
1283             nb_frames_dup += nb_frames - 1;
1284             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1285         }
1286     }else
1287         ost->sync_opts= lrintf(sync_ipts);
1288
1289     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1290     if (nb_frames <= 0)
1291         return;
1292
1293     do_video_resample(ost, ist, in_picture, &final_picture);
1294
1295     /* duplicates frame if needed */
1296     for(i=0;i<nb_frames;i++) {
1297         AVPacket pkt;
1298         av_init_packet(&pkt);
1299         pkt.stream_index= ost->index;
1300
1301         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1302             enc->codec->id == CODEC_ID_RAWVIDEO) {
1303             /* raw pictures are written as AVPicture structure to
1304                avoid any copies. We support temporarily the older
1305                method. */
1306             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1307             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1308             pkt.data= (uint8_t *)final_picture;
1309             pkt.size=  sizeof(AVPicture);
1310             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1311             pkt.flags |= AV_PKT_FLAG_KEY;
1312
1313             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1314         } else {
1315             AVFrame big_picture;
1316
1317             big_picture= *final_picture;
1318             /* better than nothing: use input picture interlaced
1319                settings */
1320             big_picture.interlaced_frame = in_picture->interlaced_frame;
1321             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1322                 if (ost->top_field_first == -1)
1323                     big_picture.top_field_first = in_picture->top_field_first;
1324                 else
1325                     big_picture.top_field_first = !!ost->top_field_first;
1326             }
1327
1328             /* handles same_quant here. This is not correct because it may
1329                not be a global option */
1330             big_picture.quality = quality;
1331             if (!enc->me_threshold)
1332                 big_picture.pict_type = 0;
1333 //            big_picture.pts = AV_NOPTS_VALUE;
1334             big_picture.pts= ost->sync_opts;
1335 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1336 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1337             if (ost->forced_kf_index < ost->forced_kf_count &&
1338                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1339                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1340                 ost->forced_kf_index++;
1341             }
1342             ret = avcodec_encode_video(enc,
1343                                        bit_buffer, bit_buffer_size,
1344                                        &big_picture);
1345             if (ret < 0) {
1346                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1347                 exit_program(1);
1348             }
1349
1350             if(ret>0){
1351                 pkt.data= bit_buffer;
1352                 pkt.size= ret;
1353                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1354                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1355 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1356    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1357    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1358
1359                 if(enc->coded_frame->key_frame)
1360                     pkt.flags |= AV_PKT_FLAG_KEY;
1361                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1362                 *frame_size = ret;
1363                 video_size += ret;
1364                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1365                 //        enc->frame_number-1, ret, enc->pict_type);
1366                 /* if two pass, output log */
1367                 if (ost->logfile && enc->stats_out) {
1368                     fprintf(ost->logfile, "%s", enc->stats_out);
1369                 }
1370             }
1371         }
1372         ost->sync_opts++;
1373         ost->frame_number++;
1374     }
1375 }
1376
1377 static double psnr(double d)
1378 {
1379     return -10.0*log(d)/log(10.0);
1380 }
1381
1382 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1383                            int frame_size)
1384 {
1385     AVCodecContext *enc;
1386     int frame_number;
1387     double ti1, bitrate, avg_bitrate;
1388
1389     /* this is executed just the first time do_video_stats is called */
1390     if (!vstats_file) {
1391         vstats_file = fopen(vstats_filename, "w");
1392         if (!vstats_file) {
1393             perror("fopen");
1394             exit_program(1);
1395         }
1396     }
1397
1398     enc = ost->st->codec;
1399     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1400         frame_number = ost->frame_number;
1401         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1402         if (enc->flags&CODEC_FLAG_PSNR)
1403             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1404
1405         fprintf(vstats_file,"f_size= %6d ", frame_size);
1406         /* compute pts value */
1407         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1408         if (ti1 < 0.01)
1409             ti1 = 0.01;
1410
1411         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1412         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1413         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1414             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1415         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1416     }
1417 }
1418
1419 static void print_report(OutputFile *output_files,
1420                          OutputStream *ost_table, int nb_ostreams,
1421                          int is_last_report, int64_t timer_start, int64_t cur_time)
1422 {
1423     char buf[1024];
1424     OutputStream *ost;
1425     AVFormatContext *oc;
1426     int64_t total_size;
1427     AVCodecContext *enc;
1428     int frame_number, vid, i;
1429     double bitrate;
1430     int64_t pts = INT64_MAX;
1431     static int64_t last_time = -1;
1432     static int qp_histogram[52];
1433     int hours, mins, secs, us;
1434
1435     if (!print_stats && !is_last_report)
1436         return;
1437
1438     if (!is_last_report) {
1439         if (last_time == -1) {
1440             last_time = cur_time;
1441             return;
1442         }
1443         if ((cur_time - last_time) < 500000)
1444             return;
1445         last_time = cur_time;
1446     }
1447
1448
1449     oc = output_files[0].ctx;
1450
1451     total_size = avio_size(oc->pb);
1452     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1453         total_size= avio_tell(oc->pb);
1454         if (total_size < 0)
1455             total_size = 0;
1456     }
1457
1458     buf[0] = '\0';
1459     vid = 0;
1460     for(i=0;i<nb_ostreams;i++) {
1461         float q = -1;
1462         ost = &ost_table[i];
1463         enc = ost->st->codec;
1464         if (!ost->stream_copy && enc->coded_frame)
1465             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1466         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1467             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1468         }
1469         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1470             float t = (cur_time-timer_start) / 1000000.0;
1471
1472             frame_number = ost->frame_number;
1473             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1474                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1475             if(is_last_report)
1476                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1477             if(qp_hist){
1478                 int j;
1479                 int qp = lrintf(q);
1480                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1481                     qp_histogram[qp]++;
1482                 for(j=0; j<32; j++)
1483                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1484             }
1485             if (enc->flags&CODEC_FLAG_PSNR){
1486                 int j;
1487                 double error, error_sum=0;
1488                 double scale, scale_sum=0;
1489                 char type[3]= {'Y','U','V'};
1490                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1491                 for(j=0; j<3; j++){
1492                     if(is_last_report){
1493                         error= enc->error[j];
1494                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1495                     }else{
1496                         error= enc->coded_frame->error[j];
1497                         scale= enc->width*enc->height*255.0*255.0;
1498                     }
1499                     if(j) scale/=4;
1500                     error_sum += error;
1501                     scale_sum += scale;
1502                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1503                 }
1504                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1505             }
1506             vid = 1;
1507         }
1508         /* compute min output value */
1509         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1510                                       ost->st->time_base, AV_TIME_BASE_Q));
1511     }
1512
1513     secs = pts / AV_TIME_BASE;
1514     us = pts % AV_TIME_BASE;
1515     mins = secs / 60;
1516     secs %= 60;
1517     hours = mins / 60;
1518     mins %= 60;
1519
1520     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1521
1522     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1523              "size=%8.0fkB time=", total_size / 1024.0);
1524     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1525              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1526              (100 * us) / AV_TIME_BASE);
1527     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1528              "bitrate=%6.1fkbits/s", bitrate);
1529
1530     if (nb_frames_dup || nb_frames_drop)
1531         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1532                 nb_frames_dup, nb_frames_drop);
1533
1534     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1535
1536     fflush(stderr);
1537
1538     if (is_last_report) {
1539         int64_t raw= audio_size + video_size + extra_size;
1540         av_log(NULL, AV_LOG_INFO, "\n");
1541         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1542                video_size/1024.0,
1543                audio_size/1024.0,
1544                extra_size/1024.0,
1545                100.0*(total_size - raw)/raw
1546         );
1547         if(video_size + audio_size + extra_size == 0){
1548             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1549         }
1550     }
1551 }
1552
1553 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1554 {
1555     int i, ret;
1556
1557     for (i = 0; i < nb_ostreams; i++) {
1558         OutputStream   *ost = &ost_table[i];
1559         AVCodecContext *enc = ost->st->codec;
1560         AVFormatContext *os = output_files[ost->file_index].ctx;
1561
1562         if (!ost->encoding_needed)
1563             continue;
1564
1565         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1566             continue;
1567         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1568             continue;
1569
1570         for(;;) {
1571             AVPacket pkt;
1572             int fifo_bytes;
1573             av_init_packet(&pkt);
1574             pkt.stream_index= ost->index;
1575
1576             switch (ost->st->codec->codec_type) {
1577             case AVMEDIA_TYPE_AUDIO:
1578                 fifo_bytes = av_fifo_size(ost->fifo);
1579                 ret = 0;
1580                 /* encode any samples remaining in fifo */
1581                 if (fifo_bytes > 0) {
1582                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1583                     int fs_tmp = enc->frame_size;
1584
1585                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1586                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1587                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1588                     } else { /* pad */
1589                         int frame_bytes = enc->frame_size*osize*enc->channels;
1590                         if (allocated_audio_buf_size < frame_bytes)
1591                             exit_program(1);
1592                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1593                     }
1594
1595                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1596                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1597                                               ost->st->time_base.num, enc->sample_rate);
1598                     enc->frame_size = fs_tmp;
1599                 }
1600                 if (ret <= 0) {
1601                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1602                 }
1603                 if (ret < 0) {
1604                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1605                     exit_program(1);
1606                 }
1607                 audio_size += ret;
1608                 pkt.flags |= AV_PKT_FLAG_KEY;
1609                 break;
1610             case AVMEDIA_TYPE_VIDEO:
1611                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1612                 if (ret < 0) {
1613                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1614                     exit_program(1);
1615                 }
1616                 video_size += ret;
1617                 if(enc->coded_frame && enc->coded_frame->key_frame)
1618                     pkt.flags |= AV_PKT_FLAG_KEY;
1619                 if (ost->logfile && enc->stats_out) {
1620                     fprintf(ost->logfile, "%s", enc->stats_out);
1621                 }
1622                 break;
1623             default:
1624                 ret=-1;
1625             }
1626
1627             if (ret <= 0)
1628                 break;
1629             pkt.data = bit_buffer;
1630             pkt.size = ret;
1631             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1632                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1633             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1634         }
1635     }
1636 }
1637
1638 /*
1639  * Check whether a packet from ist should be written into ost at this time
1640  */
1641 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1642 {
1643     OutputFile *of = &output_files[ost->file_index];
1644     int ist_index  = ist - input_streams;
1645
1646     if (ost->source_index != ist_index)
1647         return 0;
1648
1649     if (of->start_time && ist->pts < of->start_time)
1650         return 0;
1651
1652     if (of->recording_time != INT64_MAX &&
1653         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1654                       (AVRational){1, 1000000}) >= 0) {
1655         ost->is_past_recording_time = 1;
1656         return 0;
1657     }
1658
1659     return 1;
1660 }
1661
1662 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1663 {
1664     OutputFile *of = &output_files[ost->file_index];
1665     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1666     AVPicture pict;
1667     AVPacket opkt;
1668
1669     av_init_packet(&opkt);
1670
1671     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1672         !ost->copy_initial_nonkeyframes)
1673         return;
1674
1675     /* force the input stream PTS */
1676     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1677         audio_size += pkt->size;
1678     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1679         video_size += pkt->size;
1680         ost->sync_opts++;
1681     }
1682
1683     opkt.stream_index = ost->index;
1684     if (pkt->pts != AV_NOPTS_VALUE)
1685         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1686     else
1687         opkt.pts = AV_NOPTS_VALUE;
1688
1689     if (pkt->dts == AV_NOPTS_VALUE)
1690         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1691     else
1692         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1693     opkt.dts -= ost_tb_start_time;
1694
1695     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1696     opkt.flags    = pkt->flags;
1697
1698     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1699     if(   ost->st->codec->codec_id != CODEC_ID_H264
1700        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1701        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1702        ) {
1703         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1704             opkt.destruct = av_destruct_packet;
1705     } else {
1706         opkt.data = pkt->data;
1707         opkt.size = pkt->size;
1708     }
1709     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1710         /* store AVPicture in AVPacket, as expected by the output format */
1711         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1712         opkt.data = (uint8_t *)&pict;
1713         opkt.size = sizeof(AVPicture);
1714         opkt.flags |= AV_PKT_FLAG_KEY;
1715     }
1716
1717     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1718     ost->st->codec->frame_number++;
1719     ost->frame_number++;
1720     av_free_packet(&opkt);
1721 }
1722
1723 static void rate_emu_sleep(InputStream *ist)
1724 {
1725     if (input_files[ist->file_index].rate_emu) {
1726         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1727         int64_t now = av_gettime() - ist->start;
1728         if (pts > now)
1729             usleep(pts - now);
1730     }
1731 }
1732
1733 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1734 {
1735     static unsigned int samples_size = 0;
1736     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1737     uint8_t *decoded_data_buf  = NULL;
1738     int      decoded_data_size = 0;
1739     int i, ret;
1740
1741     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1742         av_free(samples);
1743         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1744         samples      = av_malloc(samples_size);
1745     }
1746     decoded_data_size = samples_size;
1747
1748     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1749                                 pkt);
1750     if (ret < 0)
1751         return ret;
1752     *got_output  = decoded_data_size > 0;
1753
1754     /* Some bug in mpeg audio decoder gives */
1755     /* decoded_data_size < 0, it seems they are overflows */
1756     if (!*got_output) {
1757         /* no audio frame */
1758         return ret;
1759     }
1760
1761     decoded_data_buf = (uint8_t *)samples;
1762     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1763                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1764
1765     // preprocess audio (volume)
1766     if (audio_volume != 256) {
1767         switch (ist->st->codec->sample_fmt) {
1768         case AV_SAMPLE_FMT_U8:
1769         {
1770             uint8_t *volp = samples;
1771             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1772                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1773                 *volp++ = av_clip_uint8(v);
1774             }
1775             break;
1776         }
1777         case AV_SAMPLE_FMT_S16:
1778         {
1779             int16_t *volp = samples;
1780             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1781                 int v = ((*volp) * audio_volume + 128) >> 8;
1782                 *volp++ = av_clip_int16(v);
1783             }
1784             break;
1785         }
1786         case AV_SAMPLE_FMT_S32:
1787         {
1788             int32_t *volp = samples;
1789             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1790                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1791                 *volp++ = av_clipl_int32(v);
1792             }
1793             break;
1794         }
1795         case AV_SAMPLE_FMT_FLT:
1796         {
1797             float *volp = samples;
1798             float scale = audio_volume / 256.f;
1799             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1800                 *volp++ *= scale;
1801             }
1802             break;
1803         }
1804         case AV_SAMPLE_FMT_DBL:
1805         {
1806             double *volp = samples;
1807             double scale = audio_volume / 256.;
1808             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1809                 *volp++ *= scale;
1810             }
1811             break;
1812         }
1813         default:
1814             av_log(NULL, AV_LOG_FATAL,
1815                    "Audio volume adjustment on sample format %s is not supported.\n",
1816                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1817             exit_program(1);
1818         }
1819     }
1820
1821     rate_emu_sleep(ist);
1822
1823     for (i = 0; i < nb_output_streams; i++) {
1824         OutputStream *ost = &output_streams[i];
1825
1826         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1827             continue;
1828         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1829                      decoded_data_buf, decoded_data_size);
1830     }
1831     return ret;
1832 }
1833
1834 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1835 {
1836     AVFrame *decoded_frame, *filtered_frame = NULL;
1837     void *buffer_to_free = NULL;
1838     int i, ret = 0;
1839     float quality = 0;
1840 #if CONFIG_AVFILTER
1841     int frame_available = 1;
1842 #endif
1843     int duration=0;
1844
1845     if (!(decoded_frame = avcodec_alloc_frame()))
1846         return AVERROR(ENOMEM);
1847     pkt->pts  = *pkt_pts;
1848     pkt->dts  = *pkt_dts;
1849     *pkt_pts  = AV_NOPTS_VALUE;
1850
1851     if (pkt->duration) {
1852         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1853     } else if(ist->st->codec->time_base.num != 0) {
1854         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1855         duration = ((int64_t)AV_TIME_BASE *
1856                           ist->st->codec->time_base.num * ticks) /
1857                           ist->st->codec->time_base.den;
1858     }
1859
1860     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
1861         *pkt_dts += duration;
1862     }else
1863         *pkt_dts = AV_NOPTS_VALUE;
1864
1865     ret = avcodec_decode_video2(ist->st->codec,
1866                                 decoded_frame, got_output, pkt);
1867     if (ret < 0)
1868         goto fail;
1869
1870     quality = same_quant ? decoded_frame->quality : 0;
1871     if (!*got_output) {
1872         /* no picture yet */
1873         av_freep(&decoded_frame);
1874         return ret;
1875     }
1876
1877     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1878         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1879
1880     ist->next_pts += duration;
1881     pkt->size = 0;
1882
1883     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1884
1885 #if CONFIG_AVFILTER
1886     for(i=0;i<nb_output_streams;i++) {
1887         OutputStream *ost = ost = &output_streams[i];
1888         if(check_output_constraints(ist, ost)){
1889             if (!decoded_frame->sample_aspect_ratio.num)
1890                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1891             decoded_frame->pts = ist->pts;
1892
1893             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1894         }
1895     }
1896 #endif
1897
1898     rate_emu_sleep(ist);
1899
1900     for (i = 0; i < nb_output_streams; i++) {
1901         OutputStream *ost = &output_streams[i];
1902         int frame_size;
1903
1904         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1905             continue;
1906
1907 #if CONFIG_AVFILTER
1908         if (ost->input_video_filter) {
1909             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1910         }
1911         while (frame_available) {
1912             if (ost->output_video_filter) {
1913                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1914                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1915                     goto cont;
1916                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1917                     ret = AVERROR(ENOMEM);
1918                     goto fail;
1919                 }
1920                 *filtered_frame= *decoded_frame; //for me_threshold
1921                 if (ost->picref) {
1922                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1923                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1924                 }
1925             }
1926             if (ost->picref->video && !ost->frame_aspect_ratio)
1927                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1928 #else
1929             filtered_frame = decoded_frame;
1930 #endif
1931
1932             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1933                          same_quant ? quality : ost->st->codec->global_quality);
1934             if (vstats_filename && frame_size)
1935                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1936 #if CONFIG_AVFILTER
1937             cont:
1938             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1939             avfilter_unref_buffer(ost->picref);
1940         }
1941         av_freep(&filtered_frame);
1942 #endif
1943     }
1944
1945 fail:
1946     av_free(buffer_to_free);
1947     av_freep(&decoded_frame);
1948     return ret;
1949 }
1950
1951 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1952 {
1953     AVSubtitle subtitle;
1954     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1955                                           &subtitle, got_output, pkt);
1956     if (ret < 0)
1957         return ret;
1958     if (!*got_output)
1959         return ret;
1960
1961     rate_emu_sleep(ist);
1962
1963     for (i = 0; i < nb_output_streams; i++) {
1964         OutputStream *ost = &output_streams[i];
1965
1966         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1967             continue;
1968
1969         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1970     }
1971
1972     avsubtitle_free(&subtitle);
1973     return ret;
1974 }
1975
1976 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1977 static int output_packet(InputStream *ist,
1978                          OutputStream *ost_table, int nb_ostreams,
1979                          const AVPacket *pkt)
1980 {
1981     int ret = 0, i;
1982     int got_output;
1983     int64_t pkt_dts = AV_NOPTS_VALUE;
1984     int64_t pkt_pts = AV_NOPTS_VALUE;
1985
1986     AVPacket avpkt;
1987
1988     if (ist->next_pts == AV_NOPTS_VALUE)
1989         ist->next_pts = ist->pts;
1990
1991     if (pkt == NULL) {
1992         /* EOF handling */
1993         av_init_packet(&avpkt);
1994         avpkt.data = NULL;
1995         avpkt.size = 0;
1996         goto handle_eof;
1997     } else {
1998         avpkt = *pkt;
1999     }
2000
2001     if(pkt->dts != AV_NOPTS_VALUE){
2002         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2003             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2004         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2005     }
2006     if(pkt->pts != AV_NOPTS_VALUE)
2007         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2008
2009     //while we have more to decode or while the decoder did output something on EOF
2010     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2011     handle_eof:
2012
2013         ist->pts = ist->next_pts;
2014
2015         if (avpkt.size && avpkt.size != pkt->size) {
2016             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2017                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2018             ist->showed_multi_packet_warning = 1;
2019         }
2020
2021         switch(ist->st->codec->codec_type) {
2022         case AVMEDIA_TYPE_AUDIO:
2023             ret = transcode_audio    (ist, &avpkt, &got_output);
2024             break;
2025         case AVMEDIA_TYPE_VIDEO:
2026             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2027             break;
2028         case AVMEDIA_TYPE_SUBTITLE:
2029             ret = transcode_subtitles(ist, &avpkt, &got_output);
2030             break;
2031         default:
2032             return -1;
2033         }
2034
2035         if (ret < 0)
2036             return ret;
2037         // touch data and size only if not EOF
2038         if (pkt) {
2039             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2040                 ret = avpkt.size;
2041             avpkt.data += ret;
2042             avpkt.size -= ret;
2043         }
2044         if (!got_output) {
2045             continue;
2046         }
2047     }
2048
2049     /* handle stream copy */
2050     if (!ist->decoding_needed) {
2051         rate_emu_sleep(ist);
2052         ist->pts = ist->next_pts;
2053         switch (ist->st->codec->codec_type) {
2054         case AVMEDIA_TYPE_AUDIO:
2055             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2056                              ist->st->codec->sample_rate;
2057             break;
2058         case AVMEDIA_TYPE_VIDEO:
2059             if (pkt->duration) {
2060                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2061             } else if(ist->st->codec->time_base.num != 0) {
2062                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2063                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2064                                   ist->st->codec->time_base.num * ticks) /
2065                                   ist->st->codec->time_base.den;
2066             }
2067             break;
2068         }
2069     }
2070     for (i = 0; pkt && i < nb_ostreams; i++) {
2071         OutputStream *ost = &ost_table[i];
2072
2073         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2074             continue;
2075
2076         do_streamcopy(ist, ost, pkt);
2077     }
2078
2079     return 0;
2080 }
2081
2082 static void print_sdp(OutputFile *output_files, int n)
2083 {
2084     char sdp[2048];
2085     int i;
2086     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2087
2088     if (!avc)
2089         exit_program(1);
2090     for (i = 0; i < n; i++)
2091         avc[i] = output_files[i].ctx;
2092
2093     av_sdp_create(avc, n, sdp, sizeof(sdp));
2094     printf("SDP:\n%s\n", sdp);
2095     fflush(stdout);
2096     av_freep(&avc);
2097 }
2098
2099 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2100                              char *error, int error_len)
2101 {
2102     InputStream *ist = &input_streams[ist_index];
2103     if (ist->decoding_needed) {
2104         AVCodec *codec = ist->dec;
2105         if (!codec) {
2106             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2107                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2108             return AVERROR(EINVAL);
2109         }
2110         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2111             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2112                     ist->file_index, ist->st->index);
2113             return AVERROR(EINVAL);
2114         }
2115         assert_codec_experimental(ist->st->codec, 0);
2116         assert_avoptions(ist->opts);
2117     }
2118
2119     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;
2120     ist->next_pts = AV_NOPTS_VALUE;
2121     ist->is_start = 1;
2122
2123     return 0;
2124 }
2125
2126 static int transcode_init(OutputFile *output_files, int nb_output_files,
2127                           InputFile  *input_files,  int nb_input_files)
2128 {
2129     int ret = 0, i, j, k;
2130     AVFormatContext *oc;
2131     AVCodecContext *codec, *icodec;
2132     OutputStream *ost;
2133     InputStream *ist;
2134     char error[1024];
2135     int want_sdp = 1;
2136
2137     /* init framerate emulation */
2138     for (i = 0; i < nb_input_files; i++) {
2139         InputFile *ifile = &input_files[i];
2140         if (ifile->rate_emu)
2141             for (j = 0; j < ifile->nb_streams; j++)
2142                 input_streams[j + ifile->ist_index].start = av_gettime();
2143     }
2144
2145     /* output stream init */
2146     for (i = 0; i < nb_output_files; i++) {
2147         oc = output_files[i].ctx;
2148         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2149             av_dump_format(oc, i, oc->filename, 1);
2150             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2151             return AVERROR(EINVAL);
2152         }
2153     }
2154
2155     /* for each output stream, we compute the right encoding parameters */
2156     for (i = 0; i < nb_output_streams; i++) {
2157         ost = &output_streams[i];
2158         oc  = output_files[ost->file_index].ctx;
2159         ist = &input_streams[ost->source_index];
2160
2161         if (ost->attachment_filename)
2162             continue;
2163
2164         codec  = ost->st->codec;
2165         icodec = ist->st->codec;
2166
2167         ost->st->disposition          = ist->st->disposition;
2168         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2169         codec->chroma_sample_location = icodec->chroma_sample_location;
2170
2171         if (ost->stream_copy) {
2172             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2173
2174             if (extra_size > INT_MAX) {
2175                 return AVERROR(EINVAL);
2176             }
2177
2178             /* if stream_copy is selected, no need to decode or encode */
2179             codec->codec_id   = icodec->codec_id;
2180             codec->codec_type = icodec->codec_type;
2181
2182             if (!codec->codec_tag) {
2183                 if (!oc->oformat->codec_tag ||
2184                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2185                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2186                     codec->codec_tag = icodec->codec_tag;
2187             }
2188
2189             codec->bit_rate       = icodec->bit_rate;
2190             codec->rc_max_rate    = icodec->rc_max_rate;
2191             codec->rc_buffer_size = icodec->rc_buffer_size;
2192             codec->extradata      = av_mallocz(extra_size);
2193             if (!codec->extradata) {
2194                 return AVERROR(ENOMEM);
2195             }
2196             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2197             codec->extradata_size= icodec->extradata_size;
2198
2199             codec->time_base = ist->st->time_base;
2200             if(!strcmp(oc->oformat->name, "avi")) {
2201                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2202                                  && av_q2d(ist->st->time_base) < 1.0/500
2203                     || copy_tb==0){
2204                     codec->time_base = icodec->time_base;
2205                     codec->time_base.num *= icodec->ticks_per_frame;
2206                     codec->time_base.den *= 2;
2207                 }
2208             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2209                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2210                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2211             ) {
2212                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2213                                 && av_q2d(ist->st->time_base) < 1.0/500
2214                    || copy_tb==0){
2215                     codec->time_base = icodec->time_base;
2216                     codec->time_base.num *= icodec->ticks_per_frame;
2217                 }
2218             }
2219             av_reduce(&codec->time_base.num, &codec->time_base.den,
2220                         codec->time_base.num, codec->time_base.den, INT_MAX);
2221
2222             switch(codec->codec_type) {
2223             case AVMEDIA_TYPE_AUDIO:
2224                 if(audio_volume != 256) {
2225                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2226                     exit_program(1);
2227                 }
2228                 codec->channel_layout     = icodec->channel_layout;
2229                 codec->sample_rate        = icodec->sample_rate;
2230                 codec->channels           = icodec->channels;
2231                 codec->frame_size         = icodec->frame_size;
2232                 codec->audio_service_type = icodec->audio_service_type;
2233                 codec->block_align        = icodec->block_align;
2234                 break;
2235             case AVMEDIA_TYPE_VIDEO:
2236                 codec->pix_fmt            = icodec->pix_fmt;
2237                 codec->width              = icodec->width;
2238                 codec->height             = icodec->height;
2239                 codec->has_b_frames       = icodec->has_b_frames;
2240                 if (!codec->sample_aspect_ratio.num) {
2241                     codec->sample_aspect_ratio   =
2242                     ost->st->sample_aspect_ratio =
2243                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2244                         ist->st->codec->sample_aspect_ratio.num ?
2245                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2246                 }
2247                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2248                 break;
2249             case AVMEDIA_TYPE_SUBTITLE:
2250                 codec->width  = icodec->width;
2251                 codec->height = icodec->height;
2252                 break;
2253             case AVMEDIA_TYPE_DATA:
2254             case AVMEDIA_TYPE_ATTACHMENT:
2255                 break;
2256             default:
2257                 abort();
2258             }
2259         } else {
2260             if (!ost->enc)
2261                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2262
2263             ist->decoding_needed = 1;
2264             ost->encoding_needed = 1;
2265
2266             switch(codec->codec_type) {
2267             case AVMEDIA_TYPE_AUDIO:
2268                 ost->fifo = av_fifo_alloc(1024);
2269                 if (!ost->fifo) {
2270                     return AVERROR(ENOMEM);
2271                 }
2272                 if (!codec->sample_rate)
2273                     codec->sample_rate = icodec->sample_rate;
2274                 choose_sample_rate(ost->st, ost->enc);
2275                 codec->time_base = (AVRational){1, codec->sample_rate};
2276
2277                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2278                     codec->sample_fmt = icodec->sample_fmt;
2279                 choose_sample_fmt(ost->st, ost->enc);
2280
2281                 if (ost->audio_channels_mapped) {
2282                     /* the requested output channel is set to the number of
2283                      * -map_channel only if no -ac are specified */
2284                     if (!codec->channels) {
2285                         codec->channels       = ost->audio_channels_mapped;
2286                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2287                         if (!codec->channel_layout) {
2288                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2289                             exit_program(1);
2290                         }
2291                     }
2292                     /* fill unused channel mapping with -1 (which means a muted
2293                      * channel in case the number of output channels is bigger
2294                      * than the number of mapped channel) */
2295                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2296                         ost->audio_channels_map[j] = -1;
2297                 } else if (!codec->channels) {
2298                     codec->channels = icodec->channels;
2299                     codec->channel_layout = icodec->channel_layout;
2300                 }
2301                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2302                     codec->channel_layout = 0;
2303
2304                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2305                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2306                                             || codec->channel_layout != icodec->channel_layout;
2307                 icodec->request_channels  = codec->channels;
2308                 ost->resample_sample_fmt  = icodec->sample_fmt;
2309                 ost->resample_sample_rate = icodec->sample_rate;
2310                 ost->resample_channels    = icodec->channels;
2311                 break;
2312             case AVMEDIA_TYPE_VIDEO:
2313                 if (codec->pix_fmt == PIX_FMT_NONE)
2314                     codec->pix_fmt = icodec->pix_fmt;
2315                 choose_pixel_fmt(ost->st, ost->enc);
2316
2317                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2318                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2319                     exit_program(1);
2320                 }
2321
2322                 if (!codec->width || !codec->height) {
2323                     codec->width  = icodec->width;
2324                     codec->height = icodec->height;
2325                 }
2326
2327                 ost->video_resample = codec->width   != icodec->width  ||
2328                                       codec->height  != icodec->height ||
2329                                       codec->pix_fmt != icodec->pix_fmt;
2330                 if (ost->video_resample) {
2331                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2332                 }
2333
2334                 ost->resample_height  = icodec->height;
2335                 ost->resample_width   = icodec->width;
2336                 ost->resample_pix_fmt = icodec->pix_fmt;
2337
2338                 if (!ost->frame_rate.num)
2339                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2340                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2341                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2342                     ost->frame_rate = ost->enc->supported_framerates[idx];
2343                 }
2344                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2345                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2346                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2347                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2348                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2349                 }
2350                 for (j = 0; j < ost->forced_kf_count; j++)
2351                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2352                                                          AV_TIME_BASE_Q,
2353                                                          codec->time_base);
2354
2355 #if CONFIG_AVFILTER
2356                 if (configure_video_filters(ist, ost)) {
2357                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2358                     exit(1);
2359                 }
2360 #endif
2361                 break;
2362             case AVMEDIA_TYPE_SUBTITLE:
2363                 break;
2364             default:
2365                 abort();
2366                 break;
2367             }
2368             /* two pass mode */
2369             if (codec->codec_id != CODEC_ID_H264 &&
2370                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2371                 char logfilename[1024];
2372                 FILE *f;
2373
2374                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2375                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2376                          i);
2377                 if (codec->flags & CODEC_FLAG_PASS2) {
2378                     char  *logbuffer;
2379                     size_t logbuffer_size;
2380                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2381                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2382                                logfilename);
2383                         exit_program(1);
2384                     }
2385                     codec->stats_in = logbuffer;
2386                 }
2387                 if (codec->flags & CODEC_FLAG_PASS1) {
2388                     f = fopen(logfilename, "wb");
2389                     if (!f) {
2390                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2391                                logfilename, strerror(errno));
2392                         exit_program(1);
2393                     }
2394                     ost->logfile = f;
2395                 }
2396             }
2397         }
2398         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2399             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2400             int size        = codec->width * codec->height;
2401             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2402         }
2403     }
2404
2405     if (!bit_buffer)
2406         bit_buffer = av_malloc(bit_buffer_size);
2407     if (!bit_buffer) {
2408         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2409                bit_buffer_size);
2410         return AVERROR(ENOMEM);
2411     }
2412
2413     /* open each encoder */
2414     for (i = 0; i < nb_output_streams; i++) {
2415         ost = &output_streams[i];
2416         if (ost->encoding_needed) {
2417             AVCodec      *codec = ost->enc;
2418             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2419             if (!codec) {
2420                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2421                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2422                 ret = AVERROR(EINVAL);
2423                 goto dump_format;
2424             }
2425             if (dec->subtitle_header) {
2426                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2427                 if (!ost->st->codec->subtitle_header) {
2428                     ret = AVERROR(ENOMEM);
2429                     goto dump_format;
2430                 }
2431                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2432                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2433             }
2434             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2435                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2436                         ost->file_index, ost->index);
2437                 ret = AVERROR(EINVAL);
2438                 goto dump_format;
2439             }
2440             assert_codec_experimental(ost->st->codec, 1);
2441             assert_avoptions(ost->opts);
2442             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2443                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2444                                              " It takes bits/s as argument, not kbits/s\n");
2445             extra_size += ost->st->codec->extradata_size;
2446
2447             if (ost->st->codec->me_threshold)
2448                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2449         }
2450     }
2451
2452     /* init input streams */
2453     for (i = 0; i < nb_input_streams; i++)
2454         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2455             goto dump_format;
2456
2457     /* discard unused programs */
2458     for (i = 0; i < nb_input_files; i++) {
2459         InputFile *ifile = &input_files[i];
2460         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2461             AVProgram *p = ifile->ctx->programs[j];
2462             int discard  = AVDISCARD_ALL;
2463
2464             for (k = 0; k < p->nb_stream_indexes; k++)
2465                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2466                     discard = AVDISCARD_DEFAULT;
2467                     break;
2468                 }
2469             p->discard = discard;
2470         }
2471     }
2472
2473     /* open files and write file headers */
2474     for (i = 0; i < nb_output_files; i++) {
2475         oc = output_files[i].ctx;
2476         oc->interrupt_callback = int_cb;
2477         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2478             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2479             ret = AVERROR(EINVAL);
2480             goto dump_format;
2481         }
2482 //        assert_avoptions(output_files[i].opts);
2483         if (strcmp(oc->oformat->name, "rtp")) {
2484             want_sdp = 0;
2485         }
2486     }
2487
2488  dump_format:
2489     /* dump the file output parameters - cannot be done before in case
2490        of stream copy */
2491     for (i = 0; i < nb_output_files; i++) {
2492         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2493     }
2494
2495     /* dump the stream mapping */
2496     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2497     for (i = 0; i < nb_output_streams; i++) {
2498         ost = &output_streams[i];
2499
2500         if (ost->attachment_filename) {
2501             /* an attached file */
2502             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2503                    ost->attachment_filename, ost->file_index, ost->index);
2504             continue;
2505         }
2506         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2507                input_streams[ost->source_index].file_index,
2508                input_streams[ost->source_index].st->index,
2509                ost->file_index,
2510                ost->index);
2511         if (ost->audio_channels_mapped) {
2512             av_log(NULL, AV_LOG_INFO, " [ch:");
2513             for (j = 0; j < ost->audio_channels_mapped; j++)
2514                 if (ost->audio_channels_map[j] == -1)
2515                     av_log(NULL, AV_LOG_INFO, " M");
2516                 else
2517                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2518             av_log(NULL, AV_LOG_INFO, "]");
2519         }
2520         if (ost->sync_ist != &input_streams[ost->source_index])
2521             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2522                    ost->sync_ist->file_index,
2523                    ost->sync_ist->st->index);
2524         if (ost->stream_copy)
2525             av_log(NULL, AV_LOG_INFO, " (copy)");
2526         else
2527             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2528                    input_streams[ost->source_index].dec->name : "?",
2529                    ost->enc ? ost->enc->name : "?");
2530         av_log(NULL, AV_LOG_INFO, "\n");
2531     }
2532
2533     if (ret) {
2534         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2535         return ret;
2536     }
2537
2538     if (want_sdp) {
2539         print_sdp(output_files, nb_output_files);
2540     }
2541
2542     return 0;
2543 }
2544
2545 /*
2546  * The following code is the main loop of the file converter
2547  */
2548 static int transcode(OutputFile *output_files, int nb_output_files,
2549                      InputFile  *input_files,  int nb_input_files)
2550 {
2551     int ret, i;
2552     AVFormatContext *is, *os;
2553     OutputStream *ost;
2554     InputStream *ist;
2555     uint8_t *no_packet;
2556     int no_packet_count=0;
2557     int64_t timer_start;
2558     int key;
2559
2560     if (!(no_packet = av_mallocz(nb_input_files)))
2561         exit_program(1);
2562
2563     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2564     if (ret < 0)
2565         goto fail;
2566
2567     if (!using_stdin) {
2568         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2569     }
2570
2571     timer_start = av_gettime();
2572
2573     for(; received_sigterm == 0;) {
2574         int file_index, ist_index;
2575         AVPacket pkt;
2576         int64_t ipts_min;
2577         double opts_min;
2578         int64_t cur_time= av_gettime();
2579
2580         ipts_min= INT64_MAX;
2581         opts_min= 1e100;
2582         /* if 'q' pressed, exits */
2583         if (!using_stdin) {
2584             static int64_t last_time;
2585             if (received_nb_signals)
2586                 break;
2587             /* read_key() returns 0 on EOF */
2588             if(cur_time - last_time >= 100000 && !run_as_daemon){
2589                 key =  read_key();
2590                 last_time = cur_time;
2591             }else
2592                 key = -1;
2593             if (key == 'q')
2594                 break;
2595             if (key == '+') av_log_set_level(av_log_get_level()+10);
2596             if (key == '-') av_log_set_level(av_log_get_level()-10);
2597             if (key == 's') qp_hist     ^= 1;
2598             if (key == 'h'){
2599                 if (do_hex_dump){
2600                     do_hex_dump = do_pkt_dump = 0;
2601                 } else if(do_pkt_dump){
2602                     do_hex_dump = 1;
2603                 } else
2604                     do_pkt_dump = 1;
2605                 av_log_set_level(AV_LOG_DEBUG);
2606             }
2607 #if CONFIG_AVFILTER
2608             if (key == 'c' || key == 'C'){
2609                 char buf[4096], target[64], command[256], arg[256] = {0};
2610                 double time;
2611                 int k, n = 0;
2612                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2613                 i = 0;
2614                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2615                     if (k > 0)
2616                         buf[i++] = k;
2617                 buf[i] = 0;
2618                 if (k > 0 &&
2619                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2620                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2621                            target, time, command, arg);
2622                     for (i = 0; i < nb_output_streams; i++) {
2623                         ost = &output_streams[i];
2624                         if (ost->graph) {
2625                             if (time < 0) {
2626                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2627                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2628                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2629                             } else {
2630                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2631                             }
2632                         }
2633                     }
2634                 } else {
2635                     av_log(NULL, AV_LOG_ERROR,
2636                            "Parse error, at least 3 arguments were expected, "
2637                            "only %d given in string '%s'\n", n, buf);
2638                 }
2639             }
2640 #endif
2641             if (key == 'd' || key == 'D'){
2642                 int debug=0;
2643                 if(key == 'D') {
2644                     debug = input_streams[0].st->codec->debug<<1;
2645                     if(!debug) debug = 1;
2646                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2647                         debug += debug;
2648                 }else
2649                     if(scanf("%d", &debug)!=1)
2650                         fprintf(stderr,"error parsing debug value\n");
2651                 for(i=0;i<nb_input_streams;i++) {
2652                     input_streams[i].st->codec->debug = debug;
2653                 }
2654                 for(i=0;i<nb_output_streams;i++) {
2655                     ost = &output_streams[i];
2656                     ost->st->codec->debug = debug;
2657                 }
2658                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2659                 fprintf(stderr,"debug=%d\n", debug);
2660             }
2661             if (key == '?'){
2662                 fprintf(stderr, "key    function\n"
2663                                 "?      show this help\n"
2664                                 "+      increase verbosity\n"
2665                                 "-      decrease verbosity\n"
2666                                 "c      Send command to filtergraph\n"
2667                                 "D      cycle through available debug modes\n"
2668                                 "h      dump packets/hex press to cycle through the 3 states\n"
2669                                 "q      quit\n"
2670                                 "s      Show QP histogram\n"
2671                 );
2672             }
2673         }
2674
2675         /* select the stream that we must read now by looking at the
2676            smallest output pts */
2677         file_index = -1;
2678         for (i = 0; i < nb_output_streams; i++) {
2679             OutputFile *of;
2680             int64_t ipts;
2681             double  opts;
2682             ost = &output_streams[i];
2683             of = &output_files[ost->file_index];
2684             os = output_files[ost->file_index].ctx;
2685             ist = &input_streams[ost->source_index];
2686             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2687                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2688                 continue;
2689             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2690             ipts = ist->pts;
2691             if (!input_files[ist->file_index].eof_reached){
2692                 if(ipts < ipts_min) {
2693                     ipts_min = ipts;
2694                     if(input_sync ) file_index = ist->file_index;
2695                 }
2696                 if(opts < opts_min) {
2697                     opts_min = opts;
2698                     if(!input_sync) file_index = ist->file_index;
2699                 }
2700             }
2701             if (ost->frame_number >= ost->max_frames) {
2702                 int j;
2703                 for (j = 0; j < of->ctx->nb_streams; j++)
2704                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2705                 continue;
2706             }
2707         }
2708         /* if none, if is finished */
2709         if (file_index < 0) {
2710             if(no_packet_count){
2711                 no_packet_count=0;
2712                 memset(no_packet, 0, nb_input_files);
2713                 usleep(10000);
2714                 continue;
2715             }
2716             break;
2717         }
2718
2719         /* read a frame from it and output it in the fifo */
2720         is = input_files[file_index].ctx;
2721         ret= av_read_frame(is, &pkt);
2722         if(ret == AVERROR(EAGAIN)){
2723             no_packet[file_index]=1;
2724             no_packet_count++;
2725             continue;
2726         }
2727         if (ret < 0) {
2728             input_files[file_index].eof_reached = 1;
2729             if (opt_shortest)
2730                 break;
2731             else
2732                 continue;
2733         }
2734
2735         no_packet_count=0;
2736         memset(no_packet, 0, nb_input_files);
2737
2738         if (do_pkt_dump) {
2739             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2740                              is->streams[pkt.stream_index]);
2741         }
2742         /* the following test is needed in case new streams appear
2743            dynamically in stream : we ignore them */
2744         if (pkt.stream_index >= input_files[file_index].nb_streams)
2745             goto discard_packet;
2746         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2747         ist = &input_streams[ist_index];
2748         if (ist->discard)
2749             goto discard_packet;
2750
2751         if (pkt.dts != AV_NOPTS_VALUE)
2752             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2753         if (pkt.pts != AV_NOPTS_VALUE)
2754             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2755
2756         if(pkt.pts != AV_NOPTS_VALUE)
2757             pkt.pts *= ist->ts_scale;
2758         if(pkt.dts != AV_NOPTS_VALUE)
2759             pkt.dts *= ist->ts_scale;
2760
2761 //        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);
2762         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2763             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2764             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2765             int64_t delta= pkt_dts - ist->next_pts;
2766             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2767                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2768                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2769                 pkt_dts+1<ist->pts)&& !copy_ts){
2770                 input_files[ist->file_index].ts_offset -= delta;
2771                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2772                        delta, input_files[ist->file_index].ts_offset);
2773                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2774                 if(pkt.pts != AV_NOPTS_VALUE)
2775                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2776             }
2777         }
2778
2779         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2780         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2781
2782             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2783                    ist->file_index, ist->st->index);
2784             if (exit_on_error)
2785                 exit_program(1);
2786             av_free_packet(&pkt);
2787             continue;
2788         }
2789
2790     discard_packet:
2791         av_free_packet(&pkt);
2792
2793         /* dump report by using the output first video and audio streams */
2794         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2795     }
2796
2797     /* at the end of stream, we must flush the decoder buffers */
2798     for (i = 0; i < nb_input_streams; i++) {
2799         ist = &input_streams[i];
2800         if (ist->decoding_needed) {
2801             output_packet(ist, output_streams, nb_output_streams, NULL);
2802         }
2803     }
2804     flush_encoders(output_streams, nb_output_streams);
2805
2806     term_exit();
2807
2808     /* write the trailer if needed and close file */
2809     for(i=0;i<nb_output_files;i++) {
2810         os = output_files[i].ctx;
2811         av_write_trailer(os);
2812     }
2813
2814     /* dump report by using the first video and audio streams */
2815     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2816
2817     /* close each encoder */
2818     for (i = 0; i < nb_output_streams; i++) {
2819         ost = &output_streams[i];
2820         if (ost->encoding_needed) {
2821             av_freep(&ost->st->codec->stats_in);
2822             avcodec_close(ost->st->codec);
2823         }
2824 #if CONFIG_AVFILTER
2825         avfilter_graph_free(&ost->graph);
2826 #endif
2827     }
2828
2829     /* close each decoder */
2830     for (i = 0; i < nb_input_streams; i++) {
2831         ist = &input_streams[i];
2832         if (ist->decoding_needed) {
2833             avcodec_close(ist->st->codec);
2834         }
2835     }
2836
2837     /* finished ! */
2838     ret = 0;
2839
2840  fail:
2841     av_freep(&bit_buffer);
2842     av_freep(&no_packet);
2843
2844     if (output_streams) {
2845         for (i = 0; i < nb_output_streams; i++) {
2846             ost = &output_streams[i];
2847             if (ost) {
2848                 if (ost->stream_copy)
2849                     av_freep(&ost->st->codec->extradata);
2850                 if (ost->logfile) {
2851                     fclose(ost->logfile);
2852                     ost->logfile = NULL;
2853                 }
2854                 av_fifo_free(ost->fifo); /* works even if fifo is not
2855                                              initialized but set to zero */
2856                 av_freep(&ost->st->codec->subtitle_header);
2857                 av_free(ost->resample_frame.data[0]);
2858                 av_free(ost->forced_kf_pts);
2859                 if (ost->video_resample)
2860                     sws_freeContext(ost->img_resample_ctx);
2861                 swr_free(&ost->swr);
2862                 av_dict_free(&ost->opts);
2863             }
2864         }
2865     }
2866     return ret;
2867 }
2868
2869 static int opt_frame_crop(const char *opt, const char *arg)
2870 {
2871     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2872     return AVERROR(EINVAL);
2873 }
2874
2875 static int opt_pad(const char *opt, const char *arg)
2876 {
2877     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2878     return -1;
2879 }
2880
2881 static double parse_frame_aspect_ratio(const char *arg)
2882 {
2883     int x = 0, y = 0;
2884     double ar = 0;
2885     const char *p;
2886     char *end;
2887
2888     p = strchr(arg, ':');
2889     if (p) {
2890         x = strtol(arg, &end, 10);
2891         if (end == p)
2892             y = strtol(end+1, &end, 10);
2893         if (x > 0 && y > 0)
2894             ar = (double)x / (double)y;
2895     } else
2896         ar = strtod(arg, NULL);
2897
2898     if (!ar) {
2899         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2900         exit_program(1);
2901     }
2902     return ar;
2903 }
2904
2905 static int opt_video_channel(const char *opt, const char *arg)
2906 {
2907     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2908     return opt_default("channel", arg);
2909 }
2910
2911 static int opt_video_standard(const char *opt, const char *arg)
2912 {
2913     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2914     return opt_default("standard", arg);
2915 }
2916
2917 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2918 {
2919     audio_codec_name = arg;
2920     return parse_option(o, "codec:a", arg, options);
2921 }
2922
2923 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2924 {
2925     video_codec_name = arg;
2926     return parse_option(o, "codec:v", arg, options);
2927 }
2928
2929 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2930 {
2931     subtitle_codec_name = arg;
2932     return parse_option(o, "codec:s", arg, options);
2933 }
2934
2935 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2936 {
2937     return parse_option(o, "codec:d", arg, options);
2938 }
2939
2940 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2941 {
2942     StreamMap *m = NULL;
2943     int i, negative = 0, file_idx;
2944     int sync_file_idx = -1, sync_stream_idx;
2945     char *p, *sync;
2946     char *map;
2947
2948     if (*arg == '-') {
2949         negative = 1;
2950         arg++;
2951     }
2952     map = av_strdup(arg);
2953
2954     /* parse sync stream first, just pick first matching stream */
2955     if (sync = strchr(map, ',')) {
2956         *sync = 0;
2957         sync_file_idx = strtol(sync + 1, &sync, 0);
2958         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2959             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2960             exit_program(1);
2961         }
2962         if (*sync)
2963             sync++;
2964         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2965             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2966                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2967                 sync_stream_idx = i;
2968                 break;
2969             }
2970         if (i == input_files[sync_file_idx].nb_streams) {
2971             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2972                                        "match any streams.\n", arg);
2973             exit_program(1);
2974         }
2975     }
2976
2977
2978     file_idx = strtol(map, &p, 0);
2979     if (file_idx >= nb_input_files || file_idx < 0) {
2980         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2981         exit_program(1);
2982     }
2983     if (negative)
2984         /* disable some already defined maps */
2985         for (i = 0; i < o->nb_stream_maps; i++) {
2986             m = &o->stream_maps[i];
2987             if (file_idx == m->file_index &&
2988                 check_stream_specifier(input_files[m->file_index].ctx,
2989                                        input_files[m->file_index].ctx->streams[m->stream_index],
2990                                        *p == ':' ? p + 1 : p) > 0)
2991                 m->disabled = 1;
2992         }
2993     else
2994         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2995             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2996                         *p == ':' ? p + 1 : p) <= 0)
2997                 continue;
2998             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2999                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3000             m = &o->stream_maps[o->nb_stream_maps - 1];
3001
3002             m->file_index   = file_idx;
3003             m->stream_index = i;
3004
3005             if (sync_file_idx >= 0) {
3006                 m->sync_file_index   = sync_file_idx;
3007                 m->sync_stream_index = sync_stream_idx;
3008             } else {
3009                 m->sync_file_index   = file_idx;
3010                 m->sync_stream_index = i;
3011             }
3012         }
3013
3014     if (!m) {
3015         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3016         exit_program(1);
3017     }
3018
3019     av_freep(&map);
3020     return 0;
3021 }
3022
3023 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3024 {
3025     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3026                                 &o->nb_attachments, o->nb_attachments + 1);
3027     o->attachments[o->nb_attachments - 1] = arg;
3028     return 0;
3029 }
3030
3031 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3032 {
3033     int n;
3034     AVStream *st;
3035     AudioChannelMap *m;
3036
3037     o->audio_channel_maps =
3038         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3039                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3040     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3041
3042     /* muted channel syntax */
3043     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3044     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3045         m->file_idx = m->stream_idx = -1;
3046         if (n == 1)
3047             m->ofile_idx = m->ostream_idx = -1;
3048         return 0;
3049     }
3050
3051     /* normal syntax */
3052     n = sscanf(arg, "%d.%d.%d:%d.%d",
3053                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3054                &m->ofile_idx, &m->ostream_idx);
3055
3056     if (n != 3 && n != 5) {
3057         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3058                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3059         exit_program(1);
3060     }
3061
3062     if (n != 5) // only file.stream.channel specified
3063         m->ofile_idx = m->ostream_idx = -1;
3064
3065     /* check input */
3066     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3067         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3068                m->file_idx);
3069         exit_program(1);
3070     }
3071     if (m->stream_idx < 0 ||
3072         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3073         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3074                m->file_idx, m->stream_idx);
3075         exit_program(1);
3076     }
3077     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3078     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3079         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3080                m->file_idx, m->stream_idx);
3081         exit_program(1);
3082     }
3083     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3084         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3085                m->file_idx, m->stream_idx, m->channel_idx);
3086         exit_program(1);
3087     }
3088     return 0;
3089 }
3090
3091 static void parse_meta_type(char *arg, char *type, int *index)
3092 {
3093     if (*arg) {
3094         *type = *arg;
3095         switch (*arg) {
3096         case 'g':
3097             break;
3098         case 's':
3099         case 'c':
3100         case 'p':
3101             if (*(++arg) == ':')
3102                 *index = strtol(++arg, NULL, 0);
3103             break;
3104         default:
3105             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3106             exit_program(1);
3107         }
3108     } else
3109         *type = 'g';
3110 }
3111
3112 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3113 {
3114     MetadataMap *m, *m1;
3115     char *p;
3116
3117     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3118                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3119
3120     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3121     m->file = strtol(arg, &p, 0);
3122     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3123
3124     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3125     if (p = strchr(opt, ':'))
3126         parse_meta_type(p + 1, &m1->type, &m1->index);
3127     else
3128         m1->type = 'g';
3129
3130     if (m->type == 'g' || m1->type == 'g')
3131         o->metadata_global_manual = 1;
3132     if (m->type == 's' || m1->type == 's')
3133         o->metadata_streams_manual = 1;
3134     if (m->type == 'c' || m1->type == 'c')
3135         o->metadata_chapters_manual = 1;
3136
3137     return 0;
3138 }
3139
3140 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3141 {
3142     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3143                     "Use -map_metadata instead.\n");
3144     return opt_map_metadata(o, opt, arg);
3145 }
3146
3147 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3148 {
3149     char buf[128];
3150     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3151     struct tm time = *gmtime((time_t*)&recording_timestamp);
3152     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3153     parse_option(o, "metadata", buf, options);
3154
3155     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3156                                  "tag instead.\n", opt);
3157     return 0;
3158 }
3159
3160 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3161 {
3162     const char *codec_string = encoder ? "encoder" : "decoder";
3163     AVCodec *codec;
3164
3165     codec = encoder ?
3166         avcodec_find_encoder_by_name(name) :
3167         avcodec_find_decoder_by_name(name);
3168     if(!codec) {
3169         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3170         exit_program(1);
3171     }
3172     if(codec->type != type) {
3173         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3174         exit_program(1);
3175     }
3176     return codec;
3177 }
3178
3179 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3180 {
3181     char *codec_name = NULL;
3182
3183     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3184     if (codec_name) {
3185         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3186         st->codec->codec_id = codec->id;
3187         return codec;
3188     } else
3189         return avcodec_find_decoder(st->codec->codec_id);
3190 }
3191
3192 /**
3193  * Add all the streams from the given input file to the global
3194  * list of input streams.
3195  */
3196 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3197 {
3198     int i, rfps, rfps_base;
3199     char *next, *codec_tag = NULL;
3200
3201     for (i = 0; i < ic->nb_streams; i++) {
3202         AVStream *st = ic->streams[i];
3203         AVCodecContext *dec = st->codec;
3204         InputStream *ist;
3205
3206         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3207         ist = &input_streams[nb_input_streams - 1];
3208         ist->st = st;
3209         ist->file_index = nb_input_files;
3210         ist->discard = 1;
3211         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3212
3213         ist->ts_scale = 1.0;
3214         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3215
3216         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3217         if (codec_tag) {
3218             uint32_t tag = strtol(codec_tag, &next, 0);
3219             if (*next)
3220                 tag = AV_RL32(codec_tag);
3221             st->codec->codec_tag = tag;
3222         }
3223
3224         ist->dec = choose_decoder(o, ic, st);
3225
3226         switch (dec->codec_type) {
3227         case AVMEDIA_TYPE_AUDIO:
3228             if(!ist->dec)
3229                 ist->dec = avcodec_find_decoder(dec->codec_id);
3230             if(o->audio_disable)
3231                 st->discard= AVDISCARD_ALL;
3232             break;
3233         case AVMEDIA_TYPE_VIDEO:
3234             if(!ist->dec)
3235                 ist->dec = avcodec_find_decoder(dec->codec_id);
3236             rfps      = ic->streams[i]->r_frame_rate.num;
3237             rfps_base = ic->streams[i]->r_frame_rate.den;
3238             if (dec->lowres) {
3239                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3240             }
3241
3242             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3243
3244                 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",
3245                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3246                        (float)rfps / rfps_base, rfps, rfps_base);
3247             }
3248
3249             if (o->video_disable)
3250                 st->discard= AVDISCARD_ALL;
3251             else if(video_discard)
3252                 st->discard= video_discard;
3253             break;
3254         case AVMEDIA_TYPE_DATA:
3255             if (o->data_disable)
3256                 st->discard= AVDISCARD_ALL;
3257             break;
3258         case AVMEDIA_TYPE_SUBTITLE:
3259             if(!ist->dec)
3260                 ist->dec = avcodec_find_decoder(dec->codec_id);
3261             if(o->subtitle_disable)
3262                 st->discard = AVDISCARD_ALL;
3263             break;
3264         case AVMEDIA_TYPE_ATTACHMENT:
3265         case AVMEDIA_TYPE_UNKNOWN:
3266             break;
3267         default:
3268             abort();
3269         }
3270     }
3271 }
3272
3273 static void assert_file_overwrite(const char *filename)
3274 {
3275     if ((!file_overwrite || no_file_overwrite) &&
3276         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3277          av_strstart(filename, "file:", NULL))) {
3278         if (avio_check(filename, 0) == 0) {
3279             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3280                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3281                 fflush(stderr);
3282                 term_exit();
3283                 if (!read_yesno()) {
3284                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3285                     exit_program(1);
3286                 }
3287                 term_init();
3288             }
3289             else {
3290                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3291                 exit_program(1);
3292             }
3293         }
3294     }
3295 }
3296
3297 static void dump_attachment(AVStream *st, const char *filename)
3298 {
3299     int ret;
3300     AVIOContext *out = NULL;
3301     AVDictionaryEntry *e;
3302
3303     if (!st->codec->extradata_size) {
3304         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3305                nb_input_files - 1, st->index);
3306         return;
3307     }
3308     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3309         filename = e->value;
3310     if (!*filename) {
3311         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3312                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3313         exit_program(1);
3314     }
3315
3316     assert_file_overwrite(filename);
3317
3318     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3319         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3320                filename);
3321         exit_program(1);
3322     }
3323
3324     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3325     avio_flush(out);
3326     avio_close(out);
3327 }
3328
3329 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3330 {
3331     AVFormatContext *ic;
3332     AVInputFormat *file_iformat = NULL;
3333     int err, i, ret;
3334     int64_t timestamp;
3335     uint8_t buf[128];
3336     AVDictionary **opts;
3337     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3338
3339     if (o->format) {
3340         if (!(file_iformat = av_find_input_format(o->format))) {
3341             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3342             exit_program(1);
3343         }
3344     }
3345
3346     if (!strcmp(filename, "-"))
3347         filename = "pipe:";
3348
3349     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3350                     !strcmp(filename, "/dev/stdin");
3351
3352     /* get default parameters from command line */
3353     ic = avformat_alloc_context();
3354     if (!ic) {
3355         print_error(filename, AVERROR(ENOMEM));
3356         exit_program(1);
3357     }
3358     if (o->nb_audio_sample_rate) {
3359         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3360         av_dict_set(&format_opts, "sample_rate", buf, 0);
3361     }
3362     if (o->nb_audio_channels) {
3363         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3364         av_dict_set(&format_opts, "channels", buf, 0);
3365     }
3366     if (o->nb_frame_rates) {
3367         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3368     }
3369     if (o->nb_frame_sizes) {
3370         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3371     }
3372     if (o->nb_frame_pix_fmts)
3373         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3374
3375     ic->video_codec_id   = video_codec_name ?
3376         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3377     ic->audio_codec_id   = audio_codec_name ?
3378         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3379     ic->subtitle_codec_id= subtitle_codec_name ?
3380         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3381     ic->flags |= AVFMT_FLAG_NONBLOCK;
3382     ic->interrupt_callback = int_cb;
3383
3384     if (loop_input) {
3385         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3386         ic->loop_input = loop_input;
3387     }
3388
3389     /* open the input file with generic libav function */
3390     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3391     if (err < 0) {
3392         print_error(filename, err);
3393         exit_program(1);
3394     }
3395     assert_avoptions(format_opts);
3396
3397     /* apply forced codec ids */
3398     for (i = 0; i < ic->nb_streams; i++)
3399         choose_decoder(o, ic, ic->streams[i]);
3400
3401     /* Set AVCodecContext options for avformat_find_stream_info */
3402     opts = setup_find_stream_info_opts(ic, codec_opts);
3403     orig_nb_streams = ic->nb_streams;
3404
3405     /* If not enough info to get the stream parameters, we decode the
3406        first frames to get it. (used in mpeg case for example) */
3407     ret = avformat_find_stream_info(ic, opts);
3408     if (ret < 0) {
3409         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3410         av_close_input_file(ic);
3411         exit_program(1);
3412     }
3413
3414     timestamp = o->start_time;
3415     /* add the stream start time */
3416     if (ic->start_time != AV_NOPTS_VALUE)
3417         timestamp += ic->start_time;
3418
3419     /* if seeking requested, we execute it */
3420     if (o->start_time != 0) {
3421         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3422         if (ret < 0) {
3423             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3424                    filename, (double)timestamp / AV_TIME_BASE);
3425         }
3426     }
3427
3428     /* update the current parameters so that they match the one of the input stream */
3429     add_input_streams(o, ic);
3430
3431     /* dump the file content */
3432     av_dump_format(ic, nb_input_files, filename, 0);
3433
3434     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3435     input_files[nb_input_files - 1].ctx        = ic;
3436     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3437     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3438     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3439     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3440
3441     for (i = 0; i < o->nb_dump_attachment; i++) {
3442         int j;
3443
3444         for (j = 0; j < ic->nb_streams; j++) {
3445             AVStream *st = ic->streams[j];
3446
3447             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3448                 dump_attachment(st, o->dump_attachment[i].u.str);
3449         }
3450     }
3451
3452     for (i = 0; i < orig_nb_streams; i++)
3453         av_dict_free(&opts[i]);
3454     av_freep(&opts);
3455
3456     reset_options(o, 1);
3457     return 0;
3458 }
3459
3460 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3461 {
3462     char *p;
3463     int n = 1, i;
3464
3465     for (p = kf; *p; p++)
3466         if (*p == ',')
3467             n++;
3468     ost->forced_kf_count = n;
3469     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3470     if (!ost->forced_kf_pts) {
3471         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3472         exit_program(1);
3473     }
3474     for (i = 0; i < n; i++) {
3475         p = i ? strchr(p, ',') + 1 : kf;
3476         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3477     }
3478 }
3479
3480 static uint8_t *get_line(AVIOContext *s)
3481 {
3482     AVIOContext *line;
3483     uint8_t *buf;
3484     char c;
3485
3486     if (avio_open_dyn_buf(&line) < 0) {
3487         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3488         exit_program(1);
3489     }
3490
3491     while ((c = avio_r8(s)) && c != '\n')
3492         avio_w8(line, c);
3493     avio_w8(line, 0);
3494     avio_close_dyn_buf(line, &buf);
3495
3496     return buf;
3497 }
3498
3499 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3500 {
3501     int i, ret = 1;
3502     char filename[1000];
3503     const char *base[3] = { getenv("AVCONV_DATADIR"),
3504                             getenv("HOME"),
3505                             AVCONV_DATADIR,
3506                             };
3507
3508     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3509         if (!base[i])
3510             continue;
3511         if (codec_name) {
3512             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3513                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3514             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3515         }
3516         if (ret) {
3517             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3518                      i != 1 ? "" : "/.avconv", preset_name);
3519             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3520         }
3521     }
3522     return ret;
3523 }
3524
3525 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3526 {
3527     char *codec_name = NULL;
3528
3529     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3530     if (!codec_name) {
3531         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3532                                                   NULL, ost->st->codec->codec_type);
3533         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3534     } else if (!strcmp(codec_name, "copy"))
3535         ost->stream_copy = 1;
3536     else {
3537         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3538         ost->st->codec->codec_id = ost->enc->id;
3539     }
3540 }
3541
3542 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3543 {
3544     OutputStream *ost;
3545     AVStream *st = avformat_new_stream(oc, NULL);
3546     int idx      = oc->nb_streams - 1, ret = 0;
3547     char *bsf = NULL, *next, *codec_tag = NULL;
3548     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3549     double qscale = -1;
3550     char *buf = NULL, *arg = NULL, *preset = NULL;
3551     AVIOContext *s = NULL;
3552
3553     if (!st) {
3554         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3555         exit_program(1);
3556     }
3557
3558     if (oc->nb_streams - 1 < o->nb_streamid_map)
3559         st->id = o->streamid_map[oc->nb_streams - 1];
3560
3561     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3562                                 nb_output_streams + 1);
3563     ost = &output_streams[nb_output_streams - 1];
3564     ost->file_index = nb_output_files;
3565     ost->index = idx;
3566     ost->st    = st;
3567     st->codec->codec_type = type;
3568     choose_encoder(o, oc, ost);
3569     if (ost->enc) {
3570         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3571     }
3572
3573     avcodec_get_context_defaults3(st->codec, ost->enc);
3574     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3575
3576     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3577     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3578         do  {
3579             buf = get_line(s);
3580             if (!buf[0] || buf[0] == '#') {
3581                 av_free(buf);
3582                 continue;
3583             }
3584             if (!(arg = strchr(buf, '='))) {
3585                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3586                 exit_program(1);
3587             }
3588             *arg++ = 0;
3589             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3590             av_free(buf);
3591         } while (!s->eof_reached);
3592         avio_close(s);
3593     }
3594     if (ret) {
3595         av_log(NULL, AV_LOG_FATAL,
3596                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3597                preset, ost->file_index, ost->index);
3598         exit_program(1);
3599     }
3600
3601     ost->max_frames = INT64_MAX;
3602     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3603
3604     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3605     while (bsf) {
3606         if (next = strchr(bsf, ','))
3607             *next++ = 0;
3608         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3609             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3610             exit_program(1);
3611         }
3612         if (bsfc_prev)
3613             bsfc_prev->next = bsfc;
3614         else
3615             ost->bitstream_filters = bsfc;
3616
3617         bsfc_prev = bsfc;
3618         bsf       = next;
3619     }
3620
3621     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3622     if (codec_tag) {
3623         uint32_t tag = strtol(codec_tag, &next, 0);
3624         if (*next)
3625             tag = AV_RL32(codec_tag);
3626         st->codec->codec_tag = tag;
3627     }
3628
3629     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3630     if (qscale >= 0 || same_quant) {
3631         st->codec->flags |= CODEC_FLAG_QSCALE;
3632         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3633     }
3634
3635     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3636         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3637
3638     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3639     return ost;
3640 }
3641
3642 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3643 {
3644     int i;
3645     const char *p = str;
3646     for(i = 0;; i++) {
3647         dest[i] = atoi(p);
3648         if(i == 63)
3649             break;
3650         p = strchr(p, ',');
3651         if(!p) {
3652             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3653             exit_program(1);
3654         }
3655         p++;
3656     }
3657 }
3658
3659 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3660 {
3661     AVStream *st;
3662     OutputStream *ost;
3663     AVCodecContext *video_enc;
3664
3665     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3666     st  = ost->st;
3667     video_enc = st->codec;
3668
3669     if (!ost->stream_copy) {
3670         const char *p = NULL;
3671         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3672         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3673         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3674         int i;
3675
3676         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3677         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3678             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3679             exit_program(1);
3680         }
3681
3682         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3683         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3684             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3685             exit_program(1);
3686         }
3687
3688         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3689         if (frame_aspect_ratio)
3690             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3691
3692         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3693         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3694         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3695             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3696             exit_program(1);
3697         }
3698         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3699
3700         if (intra_only)
3701             video_enc->gop_size = 0;
3702         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3703         if (intra_matrix) {
3704             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3705                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3706                 exit_program(1);
3707             }
3708             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3709         }
3710         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3711         if (inter_matrix) {
3712             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3713                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3714                 exit_program(1);
3715             }
3716             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3717         }
3718
3719         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3720         for(i=0; p; i++){
3721             int start, end, q;
3722             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3723             if(e!=3){
3724                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3725                 exit_program(1);
3726             }
3727             /* FIXME realloc failure */
3728             video_enc->rc_override=
3729                 av_realloc(video_enc->rc_override,
3730                            sizeof(RcOverride)*(i+1));
3731             video_enc->rc_override[i].start_frame= start;
3732             video_enc->rc_override[i].end_frame  = end;
3733             if(q>0){
3734                 video_enc->rc_override[i].qscale= q;
3735                 video_enc->rc_override[i].quality_factor= 1.0;
3736             }
3737             else{
3738                 video_enc->rc_override[i].qscale= 0;
3739                 video_enc->rc_override[i].quality_factor= -q/100.0;
3740             }
3741             p= strchr(p, '/');
3742             if(p) p++;
3743         }
3744         video_enc->rc_override_count=i;
3745         if (!video_enc->rc_initial_buffer_occupancy)
3746             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3747         video_enc->intra_dc_precision= intra_dc_precision - 8;
3748
3749         if (do_psnr)
3750             video_enc->flags|= CODEC_FLAG_PSNR;
3751
3752         /* two pass mode */
3753         if (do_pass) {
3754             if (do_pass & 1) {
3755                 video_enc->flags |= CODEC_FLAG_PASS1;
3756             }
3757             if (do_pass & 2) {
3758                 video_enc->flags |= CODEC_FLAG_PASS2;
3759             }
3760         }
3761
3762         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3763         if (forced_key_frames)
3764             parse_forced_key_frames(forced_key_frames, ost);
3765
3766         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3767
3768         ost->top_field_first = -1;
3769         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3770
3771         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3772
3773 #if CONFIG_AVFILTER
3774         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3775         if (filters)
3776             ost->avfilter = av_strdup(filters);
3777 #endif
3778     }
3779
3780     return ost;
3781 }
3782
3783 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3784 {
3785     int n;
3786     AVStream *st;
3787     OutputStream *ost;
3788     AVCodecContext *audio_enc;
3789
3790     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3791     st  = ost->st;
3792
3793     audio_enc = st->codec;
3794     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3795
3796     if (!ost->stream_copy) {
3797         char *sample_fmt = NULL;
3798
3799         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3800
3801         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3802         if (sample_fmt &&
3803             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3804             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3805             exit_program(1);
3806         }
3807
3808         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3809
3810         ost->rematrix_volume=1.0;
3811         MATCH_PER_STREAM_OPT(rematrix_volume, f, ost->rematrix_volume, oc, st);
3812     }
3813
3814     /* check for channel mapping for this audio stream */
3815     for (n = 0; n < o->nb_audio_channel_maps; n++) {
3816         AudioChannelMap *map = &o->audio_channel_maps[n];
3817         InputStream *ist = &input_streams[ost->source_index];
3818         if ((map->channel_idx == -1 || (ist->file_index == map->file_idx && ist->st->index == map->stream_idx)) &&
3819             (map->ofile_idx   == -1 || ost->file_index == map->ofile_idx) &&
3820             (map->ostream_idx == -1 || ost->st->index  == map->ostream_idx)) {
3821             if (ost->audio_channels_mapped < FF_ARRAY_ELEMS(ost->audio_channels_map))
3822                 ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
3823             else
3824                 av_log(NULL, AV_LOG_FATAL, "Max channel mapping for output %d.%d reached\n",
3825                        ost->file_index, ost->st->index);
3826         }
3827     }
3828
3829     return ost;
3830 }
3831
3832 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3833 {
3834     OutputStream *ost;
3835
3836     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3837     if (!ost->stream_copy) {
3838         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3839         exit_program(1);
3840     }
3841
3842     return ost;
3843 }
3844
3845 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3846 {
3847     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3848     ost->stream_copy = 1;
3849     return ost;
3850 }
3851
3852 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3853 {
3854     AVStream *st;
3855     OutputStream *ost;
3856     AVCodecContext *subtitle_enc;
3857
3858     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3859     st  = ost->st;
3860     subtitle_enc = st->codec;
3861
3862     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3863
3864     return ost;
3865 }
3866
3867 /* arg format is "output-stream-index:streamid-value". */
3868 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3869 {
3870     int idx;
3871     char *p;
3872     char idx_str[16];
3873
3874     av_strlcpy(idx_str, arg, sizeof(idx_str));
3875     p = strchr(idx_str, ':');
3876     if (!p) {
3877         av_log(NULL, AV_LOG_FATAL,
3878                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3879                arg, opt);
3880         exit_program(1);
3881     }
3882     *p++ = '\0';
3883     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3884     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3885     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3886     return 0;
3887 }
3888
3889 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3890 {
3891     AVFormatContext *is = ifile->ctx;
3892     AVFormatContext *os = ofile->ctx;
3893     int i;
3894
3895     for (i = 0; i < is->nb_chapters; i++) {
3896         AVChapter *in_ch = is->chapters[i], *out_ch;
3897         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3898                                       AV_TIME_BASE_Q, in_ch->time_base);
3899         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3900                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3901
3902
3903         if (in_ch->end < ts_off)
3904             continue;
3905         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3906             break;
3907
3908         out_ch = av_mallocz(sizeof(AVChapter));
3909         if (!out_ch)
3910             return AVERROR(ENOMEM);
3911
3912         out_ch->id        = in_ch->id;
3913         out_ch->time_base = in_ch->time_base;
3914         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3915         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3916
3917         if (copy_metadata)
3918             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3919
3920         os->nb_chapters++;
3921         os->chapters = av_realloc_f(os->chapters, os->nb_chapters, sizeof(AVChapter));
3922         if (!os->chapters)
3923             return AVERROR(ENOMEM);
3924         os->chapters[os->nb_chapters - 1] = out_ch;
3925     }
3926     return 0;
3927 }
3928
3929 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3930 {
3931     int i, err;
3932     AVFormatContext *ic = avformat_alloc_context();
3933
3934     ic->interrupt_callback = int_cb;
3935     err = avformat_open_input(&ic, filename, NULL, NULL);
3936     if (err < 0)
3937         return err;
3938     /* copy stream format */
3939     for(i=0;i<ic->nb_streams;i++) {
3940         AVStream *st;
3941         OutputStream *ost;
3942         AVCodec *codec;
3943         AVCodecContext *avctx;
3944
3945         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3946         ost   = new_output_stream(o, s, codec->type);
3947         st    = ost->st;
3948         avctx = st->codec;
3949
3950         // FIXME: a more elegant solution is needed
3951         memcpy(st, ic->streams[i], sizeof(AVStream));
3952         st->info = av_malloc(sizeof(*st->info));
3953         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3954         st->codec= avctx;
3955         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3956
3957         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3958             choose_sample_fmt(st, codec);
3959         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3960             choose_pixel_fmt(st, codec);
3961     }
3962
3963     av_close_input_file(ic);
3964     return 0;
3965 }
3966
3967 static void opt_output_file(void *optctx, const char *filename)
3968 {
3969     OptionsContext *o = optctx;
3970     AVFormatContext *oc;
3971     int i, err;
3972     AVOutputFormat *file_oformat;
3973     OutputStream *ost;
3974     InputStream  *ist;
3975
3976     if (!strcmp(filename, "-"))
3977         filename = "pipe:";
3978
3979     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3980     if (!oc) {
3981         print_error(filename, err);
3982         exit_program(1);
3983     }
3984     file_oformat= oc->oformat;
3985     oc->interrupt_callback = int_cb;
3986
3987     if (!strcmp(file_oformat->name, "ffm") &&
3988         av_strstart(filename, "http:", NULL)) {
3989         int j;
3990         /* special case for files sent to ffserver: we get the stream
3991            parameters from ffserver */
3992         int err = read_ffserver_streams(o, oc, filename);
3993         if (err < 0) {
3994             print_error(filename, err);
3995             exit_program(1);
3996         }
3997         for(j = nb_output_streams - oc->nb_streams; j < nb_output_streams; j++) {
3998             ost = &output_streams[j];
3999             for (i = 0; i < nb_input_streams; i++) {
4000                 ist = &input_streams[i];
4001                 if(ist->st->codec->codec_type == ost->st->codec->codec_type){
4002                     ost->sync_ist= ist;
4003                     ost->source_index= i;
4004                     ist->discard = 0;
4005                     break;
4006                 }
4007             }
4008             if(!ost->sync_ist){
4009                 av_log(NULL, AV_LOG_FATAL, "Missing %s stream which is required by this ffm\n", av_get_media_type_string(ost->st->codec->codec_type));
4010                 exit_program(1);
4011             }
4012         }
4013     } else if (!o->nb_stream_maps) {
4014         /* pick the "best" stream of each type */
4015 #define NEW_STREAM(type, index)\
4016         if (index >= 0) {\
4017             ost = new_ ## type ## _stream(o, oc);\
4018             ost->source_index = index;\
4019             ost->sync_ist     = &input_streams[index];\
4020             input_streams[index].discard = 0;\
4021         }
4022
4023         /* video: highest resolution */
4024         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
4025             int area = 0, idx = -1;
4026             for (i = 0; i < nb_input_streams; i++) {
4027                 ist = &input_streams[i];
4028                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
4029                     ist->st->codec->width * ist->st->codec->height > area) {
4030                     area = ist->st->codec->width * ist->st->codec->height;
4031                     idx = i;
4032                 }
4033             }
4034             NEW_STREAM(video, idx);
4035         }
4036
4037         /* audio: most channels */
4038         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
4039             int channels = 0, idx = -1;
4040             for (i = 0; i < nb_input_streams; i++) {
4041                 ist = &input_streams[i];
4042                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
4043                     ist->st->codec->channels > channels) {
4044                     channels = ist->st->codec->channels;
4045                     idx = i;
4046                 }
4047             }
4048             NEW_STREAM(audio, idx);
4049         }
4050
4051         /* subtitles: pick first */
4052         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
4053             for (i = 0; i < nb_input_streams; i++)
4054                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
4055                     NEW_STREAM(subtitle, i);
4056                     break;
4057                 }
4058         }
4059         /* do something with data? */
4060     } else {
4061         for (i = 0; i < o->nb_stream_maps; i++) {
4062             StreamMap *map = &o->stream_maps[i];
4063
4064             if (map->disabled)
4065                 continue;
4066
4067             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
4068             if(o->subtitle_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE)
4069                 continue;
4070             if(o->   audio_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
4071                 continue;
4072             if(o->   video_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
4073                 continue;
4074             if(o->    data_disable && ist->st->codec->codec_type == AVMEDIA_TYPE_DATA)
4075                 continue;
4076
4077             switch (ist->st->codec->codec_type) {
4078             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
4079             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
4080             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
4081             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
4082             case AVMEDIA_TYPE_ATTACHMENT: ost = new_attachment_stream(o, oc); break;
4083             default:
4084                 av_log(NULL, AV_LOG_FATAL, "Cannot map stream #%d:%d - unsupported type.\n",
4085                        map->file_index, map->stream_index);
4086                 exit_program(1);
4087             }
4088
4089             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
4090             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
4091                                            map->sync_stream_index];
4092             ist->discard = 0;
4093         }
4094     }
4095
4096     /* handle attached files */
4097     for (i = 0; i < o->nb_attachments; i++) {
4098         AVIOContext *pb;
4099         uint8_t *attachment;
4100         const char *p;
4101         int64_t len;
4102
4103         if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
4104             av_log(NULL, AV_LOG_FATAL, "Could not open attachment file %s.\n",
4105                    o->attachments[i]);
4106             exit_program(1);
4107         }
4108         if ((len = avio_size(pb)) <= 0) {
4109             av_log(NULL, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
4110                    o->attachments[i]);
4111             exit_program(1);
4112         }
4113         if (!(attachment = av_malloc(len))) {
4114             av_log(NULL, AV_LOG_FATAL, "Attachment %s too large to fit into memory.\n",
4115                    o->attachments[i]);
4116             exit_program(1);
4117         }
4118         avio_read(pb, attachment, len);
4119
4120         ost = new_attachment_stream(o, oc);
4121         ost->stream_copy               = 0;
4122         ost->source_index              = -1;
4123         ost->attachment_filename       = o->attachments[i];
4124         ost->st->codec->extradata      = attachment;
4125         ost->st->codec->extradata_size = len;
4126
4127         p = strrchr(o->attachments[i], '/');
4128         av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
4129         avio_close(pb);
4130     }
4131
4132     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
4133     output_files[nb_output_files - 1].ctx       = oc;
4134     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
4135     output_files[nb_output_files - 1].recording_time = o->recording_time;
4136     output_files[nb_output_files - 1].start_time     = o->start_time;
4137     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
4138     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
4139
4140     /* check filename in case of an image number is expected */
4141     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
4142         if (!av_filename_number_test(oc->filename)) {
4143             print_error(oc->filename, AVERROR(EINVAL));
4144             exit_program(1);
4145         }
4146     }
4147
4148     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
4149         /* test if it already exists to avoid loosing precious files */
4150         assert_file_overwrite(filename);
4151
4152         /* open the file */
4153         if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
4154                               &oc->interrupt_callback,
4155                               &output_files[nb_output_files - 1].opts)) < 0) {
4156             print_error(filename, err);
4157             exit_program(1);
4158         }
4159     }
4160
4161     if (o->mux_preload) {
4162         uint8_t buf[64];
4163         snprintf(buf, sizeof(buf), "%d", (int)(o->mux_preload*AV_TIME_BASE));
4164         av_dict_set(&output_files[nb_output_files - 1].opts, "preload", buf, 0);
4165     }
4166     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
4167
4168     if (loop_output >= 0) {
4169         av_log(NULL, AV_LOG_WARNING, "-loop_output is deprecated, use -loop\n");
4170         oc->loop_output = loop_output;
4171     }
4172
4173     /* copy chapters */
4174     if (o->chapters_input_file >= nb_input_files) {
4175         if (o->chapters_input_file == INT_MAX) {
4176             /* copy chapters from the first input file that has them*/
4177             o->chapters_input_file = -1;
4178             for (i = 0; i < nb_input_files; i++)
4179                 if (input_files[i].ctx->nb_chapters) {
4180                     o->chapters_input_file = i;
4181                     break;
4182                 }
4183         } else {
4184             av_log(NULL, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
4185                    o->chapters_input_file);
4186             exit_program(1);
4187         }
4188     }
4189     if (o->chapters_input_file >= 0)
4190         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
4191                       !o->metadata_chapters_manual);
4192
4193     /* copy metadata */
4194     for (i = 0; i < o->nb_meta_data_maps; i++) {
4195         AVFormatContext *files[2];
4196         AVDictionary    **meta[2];
4197         int j;
4198
4199 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
4200         if ((index) < 0 || (index) >= (nb_elems)) {\
4201             av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps\n",\
4202                      (desc), (index));\
4203             exit_program(1);\
4204         }
4205
4206         int in_file_index = o->meta_data_maps[i][1].file;
4207         if (in_file_index < 0)
4208             continue;
4209         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
4210
4211         files[0] = oc;
4212         files[1] = input_files[in_file_index].ctx;
4213
4214         for (j = 0; j < 2; j++) {
4215             MetadataMap *map = &o->meta_data_maps[i][j];
4216
4217             switch (map->type) {
4218             case 'g':
4219                 meta[j] = &files[j]->metadata;
4220                 break;
4221             case 's':
4222                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
4223                 meta[j] = &files[j]->streams[map->index]->metadata;
4224                 break;
4225             case 'c':
4226                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
4227                 meta[j] = &files[j]->chapters[map->index]->metadata;
4228                 break;
4229             case 'p':
4230                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
4231                 meta[j] = &files[j]->programs[map->index]->metadata;
4232                 break;
4233             default:
4234                 abort();
4235             }
4236         }
4237
4238         av_dict_copy(meta[0], *meta[1], AV_DICT_DONT_OVERWRITE);
4239     }
4240
4241     /* copy global metadata by default */
4242     if (!o->metadata_global_manual && nb_input_files){
4243         av_dict_copy(&oc->metadata, input_files[0].ctx->metadata,
4244                      AV_DICT_DONT_OVERWRITE);
4245         if(o->recording_time != INT64_MAX)
4246             av_dict_set(&oc->metadata, "duration", NULL, 0);
4247     }
4248     if (!o->metadata_streams_manual)
4249         for (i = output_files[nb_output_files - 1].ost_index; i < nb_output_streams; i++) {
4250             InputStream *ist;
4251             if (output_streams[i].source_index < 0)         /* this is true e.g. for attached files */
4252                 continue;
4253             ist = &input_streams[output_streams[i].source_index];
4254             av_dict_copy(&output_streams[i].st->metadata, ist->st->metadata, AV_DICT_DONT_OVERWRITE);
4255         }
4256
4257     /* process manually set metadata */
4258     for (i = 0; i < o->nb_metadata; i++) {
4259         AVDictionary **m;
4260         char type, *val;
4261         int index = 0;
4262
4263         val = strchr(o->metadata[i].u.str, '=');
4264         if (!val) {
4265             av_log(NULL, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
4266                    o->metadata[i].u.str);
4267             exit_program(1);
4268         }
4269         *val++ = 0;
4270
4271         parse_meta_type(o->metadata[i].specifier, &type, &index);
4272         switch (type) {
4273         case 'g':
4274             m = &oc->metadata;
4275             break;
4276         case 's':
4277             if (index < 0 || index >= oc->nb_streams) {
4278                 av_log(NULL, AV_LOG_FATAL, "Invalid stream index %d in metadata specifier.\n", index);
4279                 exit_program(1);
4280             }
4281             m = &oc->streams[index]->metadata;
4282             break;
4283         case 'c':
4284             if (index < 0 || index >= oc->nb_chapters) {
4285                 av_log(NULL, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
4286                 exit_program(1);
4287             }
4288             m = &oc->chapters[index]->metadata;
4289             break;
4290         default:
4291             av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata[i].specifier);
4292             exit_program(1);
4293         }
4294
4295         av_dict_set(m, o->metadata[i].u.str, *val ? val : NULL, 0);
4296     }
4297
4298     reset_options(o, 0);
4299 }
4300
4301 /* same option as mencoder */
4302 static int opt_pass(const char *opt, const char *arg)
4303 {
4304     do_pass = parse_number_or_die(opt, arg, OPT_INT, 1, 3);
4305     return 0;
4306 }
4307
4308 static int64_t getutime(void)
4309 {
4310 #if HAVE_GETRUSAGE
4311     struct rusage rusage;
4312
4313     getrusage(RUSAGE_SELF, &rusage);
4314     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
4315 #elif HAVE_GETPROCESSTIMES
4316     HANDLE proc;
4317     FILETIME c, e, k, u;
4318     proc = GetCurrentProcess();
4319     GetProcessTimes(proc, &c, &e, &k, &u);
4320     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
4321 #else
4322     return av_gettime();
4323 #endif
4324 }
4325
4326 static int64_t getmaxrss(void)