Merge remote-tracking branch 'qatar/master'
[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
49 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/buffersink.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "ffmpeg";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
113
114 static int frame_bits_per_raw_sample = 0;
115 static int video_discard = 0;
116 static int same_quant = 0;
117 static int do_deinterlace = 0;
118 static int intra_dc_precision = 8;
119 static int loop_input = 0;
120 static int loop_output = AVFMT_NOOUTPUTLOOP;
121 static int qp_hist = 0;
122 static int intra_only = 0;
123 static const char *video_codec_name    = NULL;
124 static const char *audio_codec_name    = NULL;
125 static const char *subtitle_codec_name = NULL;
126
127 static int file_overwrite = 0;
128 static int do_benchmark = 0;
129 static int do_hex_dump = 0;
130 static int do_pkt_dump = 0;
131 static int do_pass = 0;
132 static const char *pass_logfilename_prefix;
133 static int video_sync_method= -1;
134 static int audio_sync_method= 0;
135 static float audio_drift_threshold= 0.1;
136 static int copy_ts= 0;
137 static int copy_tb= 0;
138 static int opt_shortest = 0;
139 static char *vstats_filename;
140 static FILE *vstats_file;
141 static int copy_initial_nonkeyframes = 0;
142
143 static int audio_volume = 256;
144
145 static int exit_on_error = 0;
146 static int using_stdin = 0;
147 static int verbose = 1;
148 static int run_as_daemon  = 0;
149 static int q_pressed = 0;
150 static int64_t video_size = 0;
151 static int64_t audio_size = 0;
152 static int64_t extra_size = 0;
153 static int nb_frames_dup = 0;
154 static int nb_frames_drop = 0;
155 static int input_sync;
156
157 static float dts_delta_threshold = 10;
158
159 static uint8_t *audio_buf;
160 static uint8_t *audio_out;
161 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
162
163 static short *samples;
164 static uint8_t *input_tmp= NULL;
165
166 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
167
168 typedef struct InputStream {
169     int file_index;
170     AVStream *st;
171     int discard;             /* true if stream data should be discarded */
172     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
173     AVCodec *dec;
174
175     int64_t       start;     /* time when read started */
176     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
177                                 is not defined */
178     int64_t       pts;       /* current pts */
179     double ts_scale;
180     int is_start;            /* is 1 at the start and after a discontinuity */
181     int showed_multi_packet_warning;
182     AVDictionary *opts;
183 } InputStream;
184
185 typedef struct InputFile {
186     AVFormatContext *ctx;
187     int eof_reached;      /* true if eof reached */
188     int ist_index;        /* index of first stream in ist_table */
189     int buffer_size;      /* current total buffer size */
190     int64_t ts_offset;
191     int nb_streams;       /* number of stream that avconv is aware of; may be different
192                              from ctx.nb_streams if new streams appear during av_read_frame() */
193     int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197     int file_index;          /* file index */
198     int index;               /* stream index in the output file */
199     int source_index;        /* InputStream index */
200     AVStream *st;            /* stream in the output file */
201     int encoding_needed;     /* true if encoding needed for this stream */
202     int frame_number;
203     /* input pts and corresponding output pts
204        for A/V sync */
205     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
206     struct InputStream *sync_ist; /* input stream to sync against */
207     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
208     AVBitStreamFilterContext *bitstream_filters;
209     AVCodec *enc;
210     int64_t max_frames;
211
212     /* video only */
213     int video_resample;
214     AVFrame resample_frame;              /* temporary frame for image resampling */
215     struct SwsContext *img_resample_ctx; /* for image resampling */
216     int resample_height;
217     int resample_width;
218     int resample_pix_fmt;
219     AVRational frame_rate;
220     int force_fps;
221     int top_field_first;
222
223     float frame_aspect_ratio;
224
225     /* forced key frames */
226     int64_t *forced_kf_pts;
227     int forced_kf_count;
228     int forced_kf_index;
229
230     /* audio only */
231     int audio_resample;
232     ReSampleContext *resample; /* for audio resampling */
233     int resample_sample_fmt;
234     int resample_channels;
235     int resample_sample_rate;
236     int reformat_pair;
237     AVAudioConvert *reformat_ctx;
238     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
239     FILE *logfile;
240
241 #if CONFIG_AVFILTER
242     AVFilterContext *output_video_filter;
243     AVFilterContext *input_video_filter;
244     AVFilterBufferRef *picref;
245     char *avfilter;
246     AVFilterGraph *graph;
247 #endif
248
249    int sws_flags;
250    AVDictionary *opts;
251    int is_past_recording_time;
252 } OutputStream;
253
254
255 #if HAVE_TERMIOS_H
256
257 /* init terminal so that we can grab keys */
258 static struct termios oldtty;
259 #endif
260
261 typedef struct OutputFile {
262     AVFormatContext *ctx;
263     AVDictionary *opts;
264     int ost_index;       /* index of the first stream in output_streams */
265     int64_t recording_time; /* desired length of the resulting file in microseconds */
266     int64_t start_time;     /* start time in microseconds */
267     uint64_t limit_filesize;
268 } OutputFile;
269
270 static InputStream *input_streams = NULL;
271 static int         nb_input_streams = 0;
272 static InputFile   *input_files   = NULL;
273 static int         nb_input_files   = 0;
274
275 static OutputStream *output_streams = NULL;
276 static int        nb_output_streams = 0;
277 static OutputFile   *output_files   = NULL;
278 static int        nb_output_files   = 0;
279
280 typedef struct OptionsContext {
281     /* input/output options */
282     int64_t start_time;
283     const char *format;
284
285     SpecifierOpt *codec_names;
286     int        nb_codec_names;
287     SpecifierOpt *audio_channels;
288     int        nb_audio_channels;
289     SpecifierOpt *audio_sample_rate;
290     int        nb_audio_sample_rate;
291     SpecifierOpt *frame_rates;
292     int        nb_frame_rates;
293     SpecifierOpt *frame_sizes;
294     int        nb_frame_sizes;
295     SpecifierOpt *frame_pix_fmts;
296     int        nb_frame_pix_fmts;
297
298     /* input options */
299     int64_t input_ts_offset;
300     int rate_emu;
301
302     SpecifierOpt *ts_scale;
303     int        nb_ts_scale;
304
305     /* output options */
306     StreamMap *stream_maps;
307     int     nb_stream_maps;
308     /* first item specifies output metadata, second is input */
309     MetadataMap (*meta_data_maps)[2];
310     int nb_meta_data_maps;
311     int metadata_global_manual;
312     int metadata_streams_manual;
313     int metadata_chapters_manual;
314
315     int chapters_input_file;
316
317     int64_t recording_time;
318     uint64_t limit_filesize;
319     float mux_preload;
320     float mux_max_delay;
321
322     int video_disable;
323     int audio_disable;
324     int subtitle_disable;
325     int data_disable;
326
327     /* indexed by output file stream index */
328     int   *streamid_map;
329     int nb_streamid_map;
330
331     SpecifierOpt *metadata;
332     int        nb_metadata;
333     SpecifierOpt *max_frames;
334     int        nb_max_frames;
335     SpecifierOpt *bitstream_filters;
336     int        nb_bitstream_filters;
337     SpecifierOpt *codec_tags;
338     int        nb_codec_tags;
339     SpecifierOpt *sample_fmts;
340     int        nb_sample_fmts;
341     SpecifierOpt *qscale;
342     int        nb_qscale;
343     SpecifierOpt *forced_key_frames;
344     int        nb_forced_key_frames;
345     SpecifierOpt *force_fps;
346     int        nb_force_fps;
347     SpecifierOpt *frame_aspect_ratios;
348     int        nb_frame_aspect_ratios;
349     SpecifierOpt *rc_overrides;
350     int        nb_rc_overrides;
351     SpecifierOpt *intra_matrices;
352     int        nb_intra_matrices;
353     SpecifierOpt *inter_matrices;
354     int        nb_inter_matrices;
355     SpecifierOpt *top_field_first;
356     int        nb_top_field_first;
357 #if CONFIG_AVFILTER
358     SpecifierOpt *filters;
359     int        nb_filters;
360 #endif
361 } OptionsContext;
362
363 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
364 {\
365     int i, ret;\
366     for (i = 0; i < o->nb_ ## name; i++) {\
367         char *spec = o->name[i].specifier;\
368         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
369             outvar = o->name[i].u.type;\
370         else if (ret < 0)\
371             exit_program(1);\
372     }\
373 }
374
375 static void reset_options(OptionsContext *o, int is_input)
376 {
377     const OptionDef *po = options;
378     OptionsContext bak= *o;
379
380     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
381     while (po->name) {
382         void *dst = (uint8_t*)o + po->u.off;
383
384         if (po->flags & OPT_SPEC) {
385             SpecifierOpt **so = dst;
386             int i, *count = (int*)(so + 1);
387             for (i = 0; i < *count; i++) {
388                 av_freep(&(*so)[i].specifier);
389                 if (po->flags & OPT_STRING)
390                     av_freep(&(*so)[i].u.str);
391             }
392             av_freep(so);
393             *count = 0;
394         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
395             av_freep(dst);
396         po++;
397     }
398
399     av_freep(&o->stream_maps);
400     av_freep(&o->meta_data_maps);
401     av_freep(&o->streamid_map);
402
403     memset(o, 0, sizeof(*o));
404
405     if(is_input) o->recording_time = bak.recording_time;
406     else         o->recording_time = INT64_MAX;
407     o->mux_preload    = 0.5;
408     o->mux_max_delay  = 0.7;
409     o->limit_filesize = UINT64_MAX;
410     o->chapters_input_file = INT_MAX;
411
412     uninit_opts();
413     init_opts();
414 }
415
416 #if CONFIG_AVFILTER
417
418 static int configure_video_filters(InputStream *ist, OutputStream *ost)
419 {
420     AVFilterContext *last_filter, *filter;
421     /** filter graph containing all filters including input & output */
422     AVCodecContext *codec = ost->st->codec;
423     AVCodecContext *icodec = ist->st->codec;
424     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
425     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
426     AVRational sample_aspect_ratio;
427     char args[255];
428     int ret;
429
430     ost->graph = avfilter_graph_alloc();
431
432     if (ist->st->sample_aspect_ratio.num){
433         sample_aspect_ratio = ist->st->sample_aspect_ratio;
434     }else
435         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
436
437     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
438              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
439              sample_aspect_ratio.num, sample_aspect_ratio.den);
440
441     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
442                                        "src", args, NULL, ost->graph);
443     if (ret < 0)
444         return ret;
445 #if FF_API_OLD_VSINK_API
446     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
447                                        "out", NULL, pix_fmts, ost->graph);
448 #else
449     buffersink_params->pixel_fmts = pix_fmts;
450     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
451                                        "out", NULL, buffersink_params, ost->graph);
452 #endif
453     av_freep(&buffersink_params);
454     if (ret < 0)
455         return ret;
456     last_filter = ost->input_video_filter;
457
458     if (codec->width  != icodec->width || codec->height != icodec->height) {
459         snprintf(args, 255, "%d:%d:flags=0x%X",
460                  codec->width,
461                  codec->height,
462                  ost->sws_flags);
463         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
464                                                 NULL, args, NULL, ost->graph)) < 0)
465             return ret;
466         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
467             return ret;
468         last_filter = filter;
469     }
470
471     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
472     ost->graph->scale_sws_opts = av_strdup(args);
473
474     if (ost->avfilter) {
475         AVFilterInOut *outputs = avfilter_inout_alloc();
476         AVFilterInOut *inputs  = avfilter_inout_alloc();
477
478         outputs->name    = av_strdup("in");
479         outputs->filter_ctx = last_filter;
480         outputs->pad_idx = 0;
481         outputs->next    = NULL;
482
483         inputs->name    = av_strdup("out");
484         inputs->filter_ctx = ost->output_video_filter;
485         inputs->pad_idx = 0;
486         inputs->next    = NULL;
487
488         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
489             return ret;
490         av_freep(&ost->avfilter);
491     } else {
492         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
493             return ret;
494     }
495
496     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
497         return ret;
498
499     codec->width  = ost->output_video_filter->inputs[0]->w;
500     codec->height = ost->output_video_filter->inputs[0]->h;
501     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
502         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
503         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
504         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
505
506     return 0;
507 }
508 #endif /* CONFIG_AVFILTER */
509
510 static void term_exit(void)
511 {
512     av_log(NULL, AV_LOG_QUIET, "%s", "");
513 #if HAVE_TERMIOS_H
514     if(!run_as_daemon)
515         tcsetattr (0, TCSANOW, &oldtty);
516 #endif
517 }
518
519 static volatile int received_sigterm = 0;
520
521 static void sigterm_handler(int sig)
522 {
523     received_sigterm = sig;
524     q_pressed++;
525     term_exit();
526 }
527
528 static void term_init(void)
529 {
530 #if HAVE_TERMIOS_H
531     if(!run_as_daemon){
532     struct termios tty;
533
534     tcgetattr (0, &tty);
535     oldtty = tty;
536     atexit(term_exit);
537
538     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
539                           |INLCR|IGNCR|ICRNL|IXON);
540     tty.c_oflag |= OPOST;
541     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
542     tty.c_cflag &= ~(CSIZE|PARENB);
543     tty.c_cflag |= CS8;
544     tty.c_cc[VMIN] = 1;
545     tty.c_cc[VTIME] = 0;
546
547     tcsetattr (0, TCSANOW, &tty);
548     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
549     }
550 #endif
551
552     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
553     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
554 #ifdef SIGXCPU
555     signal(SIGXCPU, sigterm_handler);
556 #endif
557 }
558
559 /* read a key without blocking */
560 static int read_key(void)
561 {
562     unsigned char ch;
563 #if HAVE_TERMIOS_H
564     int n = 1;
565     struct timeval tv;
566     fd_set rfds;
567
568     if(run_as_daemon)
569         return -1;
570
571     FD_ZERO(&rfds);
572     FD_SET(0, &rfds);
573     tv.tv_sec = 0;
574     tv.tv_usec = 0;
575     n = select(1, &rfds, NULL, NULL, &tv);
576     if (n > 0) {
577         n = read(0, &ch, 1);
578         if (n == 1)
579             return ch;
580
581         return n;
582     }
583 #elif HAVE_KBHIT
584 #    if HAVE_PEEKNAMEDPIPE
585     static int is_pipe;
586     static HANDLE input_handle;
587     DWORD dw, nchars;
588     if(!input_handle){
589         input_handle = GetStdHandle(STD_INPUT_HANDLE);
590         is_pipe = !GetConsoleMode(input_handle, &dw);
591     }
592
593     if (stdin->_cnt > 0) {
594         read(0, &ch, 1);
595         return ch;
596     }
597     if (is_pipe) {
598         /* When running under a GUI, you will end here. */
599         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
600             return -1;
601         //Read it
602         if(nchars != 0) {
603             read(0, &ch, 1);
604             return ch;
605         }else{
606             return -1;
607         }
608     }
609 #    endif
610     if(kbhit())
611         return(getch());
612 #endif
613     return -1;
614 }
615
616 static int decode_interrupt_cb(void)
617 {
618     q_pressed += read_key() == 'q';
619     return q_pressed > 1;
620 }
621
622 void exit_program(int ret)
623 {
624     int i;
625
626     /* close files */
627     for(i=0;i<nb_output_files;i++) {
628         AVFormatContext *s = output_files[i].ctx;
629         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
630             avio_close(s->pb);
631         avformat_free_context(s);
632         av_dict_free(&output_files[i].opts);
633     }
634     for(i=0;i<nb_input_files;i++) {
635         av_close_input_file(input_files[i].ctx);
636     }
637     for (i = 0; i < nb_input_streams; i++)
638         av_dict_free(&input_streams[i].opts);
639
640     if (vstats_file)
641         fclose(vstats_file);
642     av_free(vstats_filename);
643
644     av_freep(&input_streams);
645     av_freep(&input_files);
646     av_freep(&output_streams);
647     av_freep(&output_files);
648
649     uninit_opts();
650     av_free(audio_buf);
651     av_free(audio_out);
652     allocated_audio_buf_size= allocated_audio_out_size= 0;
653     av_free(samples);
654
655 #if CONFIG_AVFILTER
656     avfilter_uninit();
657 #endif
658
659     av_freep(&input_tmp);
660
661     if (received_sigterm) {
662         fprintf(stderr,
663             "Received signal %d: terminating.\n",
664             (int) received_sigterm);
665         exit (255);
666     }
667
668     exit(ret); /* not all OS-es handle main() return value */
669 }
670
671 static void assert_avoptions(AVDictionary *m)
672 {
673     AVDictionaryEntry *t;
674     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
675         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
676         exit_program(1);
677     }
678 }
679
680 static void assert_codec_experimental(AVCodecContext *c, int encoder)
681 {
682     const char *codec_string = encoder ? "encoder" : "decoder";
683     AVCodec *codec;
684     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
685         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
686         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
687                 "results.\nAdd '-strict experimental' if you want to use it.\n",
688                 codec_string, c->codec->name);
689         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
690         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
691             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
692                    codec_string, codec->name);
693         exit_program(1);
694     }
695 }
696
697 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
698 {
699     if(codec && codec->sample_fmts){
700         const enum AVSampleFormat *p= codec->sample_fmts;
701         for(; *p!=-1; p++){
702             if(*p == st->codec->sample_fmt)
703                 break;
704         }
705         if (*p == -1) {
706             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
707                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
708             if(av_get_sample_fmt_name(st->codec->sample_fmt))
709             av_log(NULL, AV_LOG_WARNING,
710                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
711                    av_get_sample_fmt_name(st->codec->sample_fmt),
712                    codec->name,
713                    av_get_sample_fmt_name(codec->sample_fmts[0]));
714             st->codec->sample_fmt = codec->sample_fmts[0];
715         }
716     }
717 }
718
719 static void choose_sample_rate(AVStream *st, AVCodec *codec)
720 {
721     if(codec && codec->supported_samplerates){
722         const int *p= codec->supported_samplerates;
723         int best=0;
724         int best_dist=INT_MAX;
725         for(; *p; p++){
726             int dist= abs(st->codec->sample_rate - *p);
727             if(dist < best_dist){
728                 best_dist= dist;
729                 best= *p;
730             }
731         }
732         if(best_dist){
733             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
734         }
735         st->codec->sample_rate= best;
736     }
737 }
738
739 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
740 {
741     if(codec && codec->pix_fmts){
742         const enum PixelFormat *p= codec->pix_fmts;
743         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
744             if(st->codec->codec_id==CODEC_ID_MJPEG){
745                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
746             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
747                 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};
748             }
749         }
750         for(; *p!=-1; p++){
751             if(*p == st->codec->pix_fmt)
752                 break;
753         }
754         if (*p == -1) {
755             if(st->codec->pix_fmt != PIX_FMT_NONE)
756                 av_log(NULL, AV_LOG_WARNING,
757                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
758                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
759                         codec->name,
760                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
761             st->codec->pix_fmt = codec->pix_fmts[0];
762         }
763     }
764 }
765
766 static double get_sync_ipts(const OutputStream *ost)
767 {
768     const InputStream *ist = ost->sync_ist;
769     OutputFile *of = &output_files[ost->file_index];
770     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
771 }
772
773 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
774 {
775     int ret;
776
777     while(bsfc){
778         AVPacket new_pkt= *pkt;
779         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
780                                           &new_pkt.data, &new_pkt.size,
781                                           pkt->data, pkt->size,
782                                           pkt->flags & AV_PKT_FLAG_KEY);
783         if(a>0){
784             av_free_packet(pkt);
785             new_pkt.destruct= av_destruct_packet;
786         } else if(a<0){
787             fprintf(stderr, "%s failed for stream %d, codec %s",
788                     bsfc->filter->name, pkt->stream_index,
789                     avctx->codec ? avctx->codec->name : "copy");
790             print_error("", a);
791             if (exit_on_error)
792                 exit_program(1);
793         }
794         *pkt= new_pkt;
795
796         bsfc= bsfc->next;
797     }
798
799     ret= av_interleaved_write_frame(s, pkt);
800     if(ret < 0){
801         print_error("av_interleaved_write_frame()", ret);
802         exit_program(1);
803     }
804 }
805
806 static void do_audio_out(AVFormatContext *s,
807                          OutputStream *ost,
808                          InputStream *ist,
809                          unsigned char *buf, int size)
810 {
811     uint8_t *buftmp;
812     int64_t audio_out_size, audio_buf_size;
813     int64_t allocated_for_size= size;
814
815     int size_out, frame_bytes, ret, resample_changed;
816     AVCodecContext *enc= ost->st->codec;
817     AVCodecContext *dec= ist->st->codec;
818     int osize = av_get_bytes_per_sample(enc->sample_fmt);
819     int isize = av_get_bytes_per_sample(dec->sample_fmt);
820     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
821
822 need_realloc:
823     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
824     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
825     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
826     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
827     audio_buf_size*= osize*enc->channels;
828
829     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
830     if(coded_bps > 8*osize)
831         audio_out_size= audio_out_size * coded_bps / (8*osize);
832     audio_out_size += FF_MIN_BUFFER_SIZE;
833
834     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
835         fprintf(stderr, "Buffer sizes too large\n");
836         exit_program(1);
837     }
838
839     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
840     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
841     if (!audio_buf || !audio_out){
842         fprintf(stderr, "Out of memory in do_audio_out\n");
843         exit_program(1);
844     }
845
846     if (enc->channels != dec->channels)
847         ost->audio_resample = 1;
848
849     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
850                        ost->resample_channels    != dec->channels   ||
851                        ost->resample_sample_rate != dec->sample_rate;
852
853     if ((ost->audio_resample && !ost->resample) || resample_changed) {
854         if (resample_changed) {
855             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",
856                    ist->file_index, ist->st->index,
857                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
858                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
859             ost->resample_sample_fmt  = dec->sample_fmt;
860             ost->resample_channels    = dec->channels;
861             ost->resample_sample_rate = dec->sample_rate;
862             if (ost->resample)
863                 audio_resample_close(ost->resample);
864         }
865         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
866         if (audio_sync_method <= 1 &&
867             ost->resample_sample_fmt  == enc->sample_fmt &&
868             ost->resample_channels    == enc->channels   &&
869             ost->resample_sample_rate == enc->sample_rate) {
870             ost->resample = NULL;
871             ost->audio_resample = 0;
872         } else {
873             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
874                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
875             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
876                                                    enc->sample_rate, dec->sample_rate,
877                                                    enc->sample_fmt,  dec->sample_fmt,
878                                                    16, 10, 0, 0.8);
879             if (!ost->resample) {
880                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
881                         dec->channels, dec->sample_rate,
882                         enc->channels, enc->sample_rate);
883                 exit_program(1);
884             }
885         }
886     }
887
888 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
889     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
890         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
891         if (ost->reformat_ctx)
892             av_audio_convert_free(ost->reformat_ctx);
893         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
894                                                    dec->sample_fmt, 1, NULL, 0);
895         if (!ost->reformat_ctx) {
896             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
897                 av_get_sample_fmt_name(dec->sample_fmt),
898                 av_get_sample_fmt_name(enc->sample_fmt));
899             exit_program(1);
900         }
901         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
902     }
903
904     if(audio_sync_method){
905         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
906                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
907         double idelta= delta*dec->sample_rate / enc->sample_rate;
908         int byte_delta= ((int)idelta)*2*dec->channels;
909
910         //FIXME resample delay
911         if(fabs(delta) > 50){
912             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
913                 if(byte_delta < 0){
914                     byte_delta= FFMAX(byte_delta, -size);
915                     size += byte_delta;
916                     buf  -= byte_delta;
917                     if(verbose > 2)
918                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
919                     if(!size)
920                         return;
921                     ist->is_start=0;
922                 }else{
923                     input_tmp= av_realloc(input_tmp, byte_delta + size);
924
925                     if(byte_delta > allocated_for_size - size){
926                         allocated_for_size= byte_delta + (int64_t)size;
927                         goto need_realloc;
928                     }
929                     ist->is_start=0;
930
931                     memset(input_tmp, 0, byte_delta);
932                     memcpy(input_tmp + byte_delta, buf, size);
933                     buf= input_tmp;
934                     size += byte_delta;
935                     if(verbose > 2)
936                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
937                 }
938             }else if(audio_sync_method>1){
939                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
940                 av_assert0(ost->audio_resample);
941                 if(verbose > 2)
942                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
943 //                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));
944                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
945             }
946         }
947     }else
948         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
949                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
950
951     if (ost->audio_resample) {
952         buftmp = audio_buf;
953         size_out = audio_resample(ost->resample,
954                                   (short *)buftmp, (short *)buf,
955                                   size / (dec->channels * isize));
956         size_out = size_out * enc->channels * osize;
957     } else {
958         buftmp = buf;
959         size_out = size;
960     }
961
962     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
963         const void *ibuf[6]= {buftmp};
964         void *obuf[6]= {audio_buf};
965         int istride[6]= {isize};
966         int ostride[6]= {osize};
967         int len= size_out/istride[0];
968         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
969             printf("av_audio_convert() failed\n");
970             if (exit_on_error)
971                 exit_program(1);
972             return;
973         }
974         buftmp = audio_buf;
975         size_out = len*osize;
976     }
977
978     /* now encode as many frames as possible */
979     if (enc->frame_size > 1) {
980         /* output resampled raw samples */
981         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
982             fprintf(stderr, "av_fifo_realloc2() failed\n");
983             exit_program(1);
984         }
985         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
986
987         frame_bytes = enc->frame_size * osize * enc->channels;
988
989         while (av_fifo_size(ost->fifo) >= frame_bytes) {
990             AVPacket pkt;
991             av_init_packet(&pkt);
992
993             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
994
995             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
996
997             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
998                                        (short *)audio_buf);
999             if (ret < 0) {
1000                 fprintf(stderr, "Audio encoding failed\n");
1001                 exit_program(1);
1002             }
1003             audio_size += ret;
1004             pkt.stream_index= ost->index;
1005             pkt.data= audio_out;
1006             pkt.size= ret;
1007             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1008                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1009             pkt.flags |= AV_PKT_FLAG_KEY;
1010             write_frame(s, &pkt, enc, ost->bitstream_filters);
1011
1012             ost->sync_opts += enc->frame_size;
1013         }
1014     } else {
1015         AVPacket pkt;
1016         av_init_packet(&pkt);
1017
1018         ost->sync_opts += size_out / (osize * enc->channels);
1019
1020         /* output a pcm frame */
1021         /* determine the size of the coded buffer */
1022         size_out /= osize;
1023         if (coded_bps)
1024             size_out = size_out*coded_bps/8;
1025
1026         if(size_out > audio_out_size){
1027             fprintf(stderr, "Internal error, buffer size too small\n");
1028             exit_program(1);
1029         }
1030
1031         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1032         ret = avcodec_encode_audio(enc, audio_out, size_out,
1033                                    (short *)buftmp);
1034         if (ret < 0) {
1035             fprintf(stderr, "Audio encoding failed\n");
1036             exit_program(1);
1037         }
1038         audio_size += ret;
1039         pkt.stream_index= ost->index;
1040         pkt.data= audio_out;
1041         pkt.size= ret;
1042         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1043             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1044         pkt.flags |= AV_PKT_FLAG_KEY;
1045         write_frame(s, &pkt, enc, ost->bitstream_filters);
1046     }
1047 }
1048
1049 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1050 {
1051     AVCodecContext *dec;
1052     AVPicture *picture2;
1053     AVPicture picture_tmp;
1054     uint8_t *buf = 0;
1055
1056     dec = ist->st->codec;
1057
1058     /* deinterlace : must be done before any resize */
1059     if (do_deinterlace) {
1060         int size;
1061
1062         /* create temporary picture */
1063         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1064         buf = av_malloc(size);
1065         if (!buf)
1066             return;
1067
1068         picture2 = &picture_tmp;
1069         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1070
1071         if(avpicture_deinterlace(picture2, picture,
1072                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1073             /* if error, do not deinterlace */
1074             fprintf(stderr, "Deinterlacing failed\n");
1075             av_free(buf);
1076             buf = NULL;
1077             picture2 = picture;
1078         }
1079     } else {
1080         picture2 = picture;
1081     }
1082
1083     if (picture != picture2)
1084         *picture = *picture2;
1085     *bufp = buf;
1086 }
1087
1088 static void do_subtitle_out(AVFormatContext *s,
1089                             OutputStream *ost,
1090                             InputStream *ist,
1091                             AVSubtitle *sub,
1092                             int64_t pts)
1093 {
1094     static uint8_t *subtitle_out = NULL;
1095     int subtitle_out_max_size = 1024 * 1024;
1096     int subtitle_out_size, nb, i;
1097     AVCodecContext *enc;
1098     AVPacket pkt;
1099
1100     if (pts == AV_NOPTS_VALUE) {
1101         fprintf(stderr, "Subtitle packets must have a pts\n");
1102         if (exit_on_error)
1103             exit_program(1);
1104         return;
1105     }
1106
1107     enc = ost->st->codec;
1108
1109     if (!subtitle_out) {
1110         subtitle_out = av_malloc(subtitle_out_max_size);
1111     }
1112
1113     /* Note: DVB subtitle need one packet to draw them and one other
1114        packet to clear them */
1115     /* XXX: signal it in the codec context ? */
1116     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1117         nb = 2;
1118     else
1119         nb = 1;
1120
1121     for(i = 0; i < nb; i++) {
1122         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1123         // start_display_time is required to be 0
1124         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1125         sub->end_display_time -= sub->start_display_time;
1126         sub->start_display_time = 0;
1127         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1128                                                     subtitle_out_max_size, sub);
1129         if (subtitle_out_size < 0) {
1130             fprintf(stderr, "Subtitle encoding failed\n");
1131             exit_program(1);
1132         }
1133
1134         av_init_packet(&pkt);
1135         pkt.stream_index = ost->index;
1136         pkt.data = subtitle_out;
1137         pkt.size = subtitle_out_size;
1138         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1139         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1140             /* XXX: the pts correction is handled here. Maybe handling
1141                it in the codec would be better */
1142             if (i == 0)
1143                 pkt.pts += 90 * sub->start_display_time;
1144             else
1145                 pkt.pts += 90 * sub->end_display_time;
1146         }
1147         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1148     }
1149 }
1150
1151 static int bit_buffer_size= 1024*256;
1152 static uint8_t *bit_buffer= NULL;
1153
1154 static void do_video_resample(OutputStream *ost,
1155                               InputStream *ist,
1156                               AVFrame *in_picture,
1157                               AVFrame **out_picture)
1158 {
1159 #if CONFIG_AVFILTER
1160     *out_picture = in_picture;
1161 #else
1162     AVCodecContext *dec = ist->st->codec;
1163     AVCodecContext *enc = ost->st->codec;
1164     int resample_changed = ost->resample_width   != dec->width  ||
1165                            ost->resample_height  != dec->height ||
1166                            ost->resample_pix_fmt != dec->pix_fmt;
1167
1168     *out_picture = in_picture;
1169     if (resample_changed) {
1170         av_log(NULL, AV_LOG_INFO,
1171                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1172                ist->file_index, ist->st->index,
1173                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1174                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1175         ost->resample_width   = dec->width;
1176         ost->resample_height  = dec->height;
1177         ost->resample_pix_fmt = dec->pix_fmt;
1178     }
1179
1180     ost->video_resample = dec->width   != enc->width  ||
1181                           dec->height  != enc->height ||
1182                           dec->pix_fmt != enc->pix_fmt;
1183
1184     if (ost->video_resample) {
1185         *out_picture = &ost->resample_frame;
1186         if (!ost->img_resample_ctx || resample_changed) {
1187             /* initialize the destination picture */
1188             if (!ost->resample_frame.data[0]) {
1189                 avcodec_get_frame_defaults(&ost->resample_frame);
1190                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1191                                     enc->width, enc->height)) {
1192                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1193                     exit_program(1);
1194                 }
1195             }
1196             /* initialize a new scaler context */
1197             sws_freeContext(ost->img_resample_ctx);
1198             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1199                                                    enc->width, enc->height, enc->pix_fmt,
1200                                                    ost->sws_flags, NULL, NULL, NULL);
1201             if (ost->img_resample_ctx == NULL) {
1202                 fprintf(stderr, "Cannot get resampling context\n");
1203                 exit_program(1);
1204             }
1205         }
1206         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1207               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1208     }
1209 #endif
1210 }
1211
1212
1213 static void do_video_out(AVFormatContext *s,
1214                          OutputStream *ost,
1215                          InputStream *ist,
1216                          AVFrame *in_picture,
1217                          int *frame_size, float quality)
1218 {
1219     int nb_frames, i, ret, format_video_sync;
1220     AVFrame *final_picture;
1221     AVCodecContext *enc;
1222     double sync_ipts;
1223     double duration = 0;
1224
1225     enc = ost->st->codec;
1226
1227     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1228         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1229         if(ist->st->avg_frame_rate.num)
1230             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1231
1232         duration /= av_q2d(enc->time_base);
1233     }
1234
1235     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1236
1237     /* by default, we output a single frame */
1238     nb_frames = 1;
1239
1240     *frame_size = 0;
1241
1242     format_video_sync = video_sync_method;
1243     if (format_video_sync < 0)
1244         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1245
1246     if (format_video_sync) {
1247         double vdelta = sync_ipts - ost->sync_opts + duration;
1248         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1249         if (vdelta < -1.1)
1250             nb_frames = 0;
1251         else if (format_video_sync == 2) {
1252             if(vdelta<=-0.6){
1253                 nb_frames=0;
1254             }else if(vdelta>0.6)
1255                 ost->sync_opts= lrintf(sync_ipts);
1256         }else if (vdelta > 1.1)
1257             nb_frames = lrintf(vdelta);
1258 //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);
1259         if (nb_frames == 0){
1260             ++nb_frames_drop;
1261             if (verbose>2)
1262                 fprintf(stderr, "*** drop!\n");
1263         }else if (nb_frames > 1) {
1264             nb_frames_dup += nb_frames - 1;
1265             if (verbose>2)
1266                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1267         }
1268     }else
1269         ost->sync_opts= lrintf(sync_ipts);
1270
1271     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1272     if (nb_frames <= 0)
1273         return;
1274
1275     do_video_resample(ost, ist, in_picture, &final_picture);
1276
1277     /* duplicates frame if needed */
1278     for(i=0;i<nb_frames;i++) {
1279         AVPacket pkt;
1280         av_init_packet(&pkt);
1281         pkt.stream_index= ost->index;
1282
1283         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1284             /* raw pictures are written as AVPicture structure to
1285                avoid any copies. We support temporarily the older
1286                method. */
1287             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1288             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1289             pkt.data= (uint8_t *)final_picture;
1290             pkt.size=  sizeof(AVPicture);
1291             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1292             pkt.flags |= AV_PKT_FLAG_KEY;
1293
1294             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1295         } else {
1296             AVFrame big_picture;
1297
1298             big_picture= *final_picture;
1299             /* better than nothing: use input picture interlaced
1300                settings */
1301             big_picture.interlaced_frame = in_picture->interlaced_frame;
1302             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1303                 if (ost->top_field_first == -1)
1304                     big_picture.top_field_first = in_picture->top_field_first;
1305                 else
1306                     big_picture.top_field_first = !!ost->top_field_first;
1307             }
1308
1309             /* handles same_quant here. This is not correct because it may
1310                not be a global option */
1311             big_picture.quality = quality;
1312             if (!enc->me_threshold)
1313                 big_picture.pict_type = 0;
1314 //            big_picture.pts = AV_NOPTS_VALUE;
1315             big_picture.pts= ost->sync_opts;
1316 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1317 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1318             if (ost->forced_kf_index < ost->forced_kf_count &&
1319                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1320                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1321                 ost->forced_kf_index++;
1322             }
1323             ret = avcodec_encode_video(enc,
1324                                        bit_buffer, bit_buffer_size,
1325                                        &big_picture);
1326             if (ret < 0) {
1327                 fprintf(stderr, "Video encoding failed\n");
1328                 exit_program(1);
1329             }
1330
1331             if(ret>0){
1332                 pkt.data= bit_buffer;
1333                 pkt.size= ret;
1334                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1335                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1336 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1337    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1338    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1339
1340                 if(enc->coded_frame->key_frame)
1341                     pkt.flags |= AV_PKT_FLAG_KEY;
1342                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1343                 *frame_size = ret;
1344                 video_size += ret;
1345                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1346                 //        enc->frame_number-1, ret, enc->pict_type);
1347                 /* if two pass, output log */
1348                 if (ost->logfile && enc->stats_out) {
1349                     fprintf(ost->logfile, "%s", enc->stats_out);
1350                 }
1351             }
1352         }
1353         ost->sync_opts++;
1354         ost->frame_number++;
1355     }
1356 }
1357
1358 static double psnr(double d)
1359 {
1360     return -10.0*log(d)/log(10.0);
1361 }
1362
1363 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1364                            int frame_size)
1365 {
1366     AVCodecContext *enc;
1367     int frame_number;
1368     double ti1, bitrate, avg_bitrate;
1369
1370     /* this is executed just the first time do_video_stats is called */
1371     if (!vstats_file) {
1372         vstats_file = fopen(vstats_filename, "w");
1373         if (!vstats_file) {
1374             perror("fopen");
1375             exit_program(1);
1376         }
1377     }
1378
1379     enc = ost->st->codec;
1380     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1381         frame_number = ost->frame_number;
1382         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1383         if (enc->flags&CODEC_FLAG_PSNR)
1384             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1385
1386         fprintf(vstats_file,"f_size= %6d ", frame_size);
1387         /* compute pts value */
1388         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1389         if (ti1 < 0.01)
1390             ti1 = 0.01;
1391
1392         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1393         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1394         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1395             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1396         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1397     }
1398 }
1399
1400 static void print_report(OutputFile *output_files,
1401                          OutputStream *ost_table, int nb_ostreams,
1402                          int is_last_report, int64_t timer_start)
1403 {
1404     char buf[1024];
1405     OutputStream *ost;
1406     AVFormatContext *oc;
1407     int64_t total_size;
1408     AVCodecContext *enc;
1409     int frame_number, vid, i;
1410     double bitrate;
1411     int64_t pts = INT64_MAX;
1412     static int64_t last_time = -1;
1413     static int qp_histogram[52];
1414
1415     if (!is_last_report) {
1416         int64_t cur_time;
1417         /* display the report every 0.5 seconds */
1418         cur_time = av_gettime();
1419         if (last_time == -1) {
1420             last_time = cur_time;
1421             return;
1422         }
1423         if ((cur_time - last_time) < 500000)
1424             return;
1425         last_time = cur_time;
1426     }
1427
1428
1429     oc = output_files[0].ctx;
1430
1431     total_size = avio_size(oc->pb);
1432     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1433         total_size= avio_tell(oc->pb);
1434
1435     buf[0] = '\0';
1436     vid = 0;
1437     for(i=0;i<nb_ostreams;i++) {
1438         float q = -1;
1439         ost = &ost_table[i];
1440         enc = ost->st->codec;
1441         if (!ost->st->stream_copy && enc->coded_frame)
1442             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1443         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1444             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1445         }
1446         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1447             float t = (av_gettime()-timer_start) / 1000000.0;
1448
1449             frame_number = ost->frame_number;
1450             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1451                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1452             if(is_last_report)
1453                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1454             if(qp_hist){
1455                 int j;
1456                 int qp = lrintf(q);
1457                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1458                     qp_histogram[qp]++;
1459                 for(j=0; j<32; j++)
1460                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1461             }
1462             if (enc->flags&CODEC_FLAG_PSNR){
1463                 int j;
1464                 double error, error_sum=0;
1465                 double scale, scale_sum=0;
1466                 char type[3]= {'Y','U','V'};
1467                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1468                 for(j=0; j<3; j++){
1469                     if(is_last_report){
1470                         error= enc->error[j];
1471                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1472                     }else{
1473                         error= enc->coded_frame->error[j];
1474                         scale= enc->width*enc->height*255.0*255.0;
1475                     }
1476                     if(j) scale/=4;
1477                     error_sum += error;
1478                     scale_sum += scale;
1479                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1480                 }
1481                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1482             }
1483             vid = 1;
1484         }
1485         /* compute min output value */
1486         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1487                                       ost->st->time_base, AV_TIME_BASE_Q));
1488     }
1489
1490     if (verbose > 0 || is_last_report) {
1491         int hours, mins, secs, us;
1492         secs = pts / AV_TIME_BASE;
1493         us = pts % AV_TIME_BASE;
1494         mins = secs / 60;
1495         secs %= 60;
1496         hours = mins / 60;
1497         mins %= 60;
1498
1499         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1500
1501         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1502                  "size=%8.0fkB time=", total_size / 1024.0);
1503         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1504                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1505                  (100 * us) / AV_TIME_BASE);
1506         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1507                  "bitrate=%6.1fkbits/s", bitrate);
1508
1509         if (nb_frames_dup || nb_frames_drop)
1510           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1511                   nb_frames_dup, nb_frames_drop);
1512
1513         if (verbose >= 0)
1514             fprintf(stderr, "%s    \r", buf);
1515
1516         fflush(stderr);
1517     }
1518
1519     if (is_last_report && verbose >= 0){
1520         int64_t raw= audio_size + video_size + extra_size;
1521         fprintf(stderr, "\n");
1522         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1523                 video_size/1024.0,
1524                 audio_size/1024.0,
1525                 extra_size/1024.0,
1526                 100.0*(total_size - raw)/raw
1527         );
1528     }
1529 }
1530
1531 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1532 {
1533     int fill_char = 0x00;
1534     if (sample_fmt == AV_SAMPLE_FMT_U8)
1535         fill_char = 0x80;
1536     memset(buf, fill_char, size);
1537 }
1538
1539 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1540 {
1541     int i, ret;
1542
1543     for (i = 0; i < nb_ostreams; i++) {
1544         OutputStream   *ost = &ost_table[i];
1545         AVCodecContext *enc = ost->st->codec;
1546         AVFormatContext *os = output_files[ost->file_index].ctx;
1547
1548         if (!ost->encoding_needed)
1549             continue;
1550
1551         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1552             continue;
1553         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1554             continue;
1555
1556         for(;;) {
1557             AVPacket pkt;
1558             int fifo_bytes;
1559             av_init_packet(&pkt);
1560             pkt.stream_index= ost->index;
1561
1562             switch (ost->st->codec->codec_type) {
1563             case AVMEDIA_TYPE_AUDIO:
1564                 fifo_bytes = av_fifo_size(ost->fifo);
1565                 ret = 0;
1566                 /* encode any samples remaining in fifo */
1567                 if (fifo_bytes > 0) {
1568                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1569                     int fs_tmp = enc->frame_size;
1570
1571                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1572                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1573                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1574                     } else { /* pad */
1575                         int frame_bytes = enc->frame_size*osize*enc->channels;
1576                         if (allocated_audio_buf_size < frame_bytes)
1577                             exit_program(1);
1578                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1579                     }
1580
1581                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1582                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1583                                               ost->st->time_base.num, enc->sample_rate);
1584                     enc->frame_size = fs_tmp;
1585                 }
1586                 if (ret <= 0) {
1587                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1588                 }
1589                 if (ret < 0) {
1590                     fprintf(stderr, "Audio encoding failed\n");
1591                     exit_program(1);
1592                 }
1593                 audio_size += ret;
1594                 pkt.flags |= AV_PKT_FLAG_KEY;
1595                 break;
1596             case AVMEDIA_TYPE_VIDEO:
1597                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1598                 if (ret < 0) {
1599                     fprintf(stderr, "Video encoding failed\n");
1600                     exit_program(1);
1601                 }
1602                 video_size += ret;
1603                 if(enc->coded_frame && enc->coded_frame->key_frame)
1604                     pkt.flags |= AV_PKT_FLAG_KEY;
1605                 if (ost->logfile && enc->stats_out) {
1606                     fprintf(ost->logfile, "%s", enc->stats_out);
1607                 }
1608                 break;
1609             default:
1610                 ret=-1;
1611             }
1612
1613             if (ret <= 0)
1614                 break;
1615             pkt.data = bit_buffer;
1616             pkt.size = ret;
1617             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1618                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1619             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1620         }
1621     }
1622 }
1623
1624 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1625 static int output_packet(InputStream *ist, int ist_index,
1626                          OutputStream *ost_table, int nb_ostreams,
1627                          const AVPacket *pkt)
1628 {
1629     AVFormatContext *os;
1630     OutputStream *ost;
1631     int ret, i;
1632     int got_output;
1633     AVFrame picture;
1634     void *buffer_to_free = NULL;
1635     static unsigned int samples_size= 0;
1636     AVSubtitle subtitle, *subtitle_to_free;
1637     int64_t pkt_pts = AV_NOPTS_VALUE;
1638 #if CONFIG_AVFILTER
1639     int frame_available;
1640 #endif
1641     float quality;
1642
1643     AVPacket avpkt;
1644     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1645
1646     if(ist->next_pts == AV_NOPTS_VALUE)
1647         ist->next_pts= ist->pts;
1648
1649     if (pkt == NULL) {
1650         /* EOF handling */
1651         av_init_packet(&avpkt);
1652         avpkt.data = NULL;
1653         avpkt.size = 0;
1654         goto handle_eof;
1655     } else {
1656         avpkt = *pkt;
1657     }
1658
1659     if(pkt->dts != AV_NOPTS_VALUE)
1660         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1661     if(pkt->pts != AV_NOPTS_VALUE)
1662         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1663
1664     //while we have more to decode or while the decoder did output something on EOF
1665     while (avpkt.size > 0 || (!pkt && got_output)) {
1666         uint8_t *data_buf, *decoded_data_buf;
1667         int data_size, decoded_data_size;
1668     handle_eof:
1669         ist->pts= ist->next_pts;
1670
1671         if(avpkt.size && avpkt.size != pkt->size &&
1672            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1673             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1674             ist->showed_multi_packet_warning=1;
1675         }
1676
1677         /* decode the packet if needed */
1678         decoded_data_buf = NULL; /* fail safe */
1679         decoded_data_size= 0;
1680         data_buf  = avpkt.data;
1681         data_size = avpkt.size;
1682         subtitle_to_free = NULL;
1683         if (ist->decoding_needed) {
1684             switch(ist->st->codec->codec_type) {
1685             case AVMEDIA_TYPE_AUDIO:{
1686                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1687                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1688                     av_free(samples);
1689                     samples= av_malloc(samples_size);
1690                 }
1691                 decoded_data_size= samples_size;
1692                     /* XXX: could avoid copy if PCM 16 bits with same
1693                        endianness as CPU */
1694                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1695                                             &avpkt);
1696                 if (ret < 0)
1697                     return ret;
1698                 avpkt.data += ret;
1699                 avpkt.size -= ret;
1700                 data_size   = ret;
1701                 got_output  = decoded_data_size > 0;
1702                 /* Some bug in mpeg audio decoder gives */
1703                 /* decoded_data_size < 0, it seems they are overflows */
1704                 if (!got_output) {
1705                     /* no audio frame */
1706                     continue;
1707                 }
1708                 decoded_data_buf = (uint8_t *)samples;
1709                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1710                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1711                 break;}
1712             case AVMEDIA_TYPE_VIDEO:
1713                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1714                     /* XXX: allocate picture correctly */
1715                     avcodec_get_frame_defaults(&picture);
1716                     avpkt.pts = pkt_pts;
1717                     avpkt.dts = ist->pts;
1718                     pkt_pts = AV_NOPTS_VALUE;
1719
1720                     ret = avcodec_decode_video2(ist->st->codec,
1721                                                 &picture, &got_output, &avpkt);
1722                     quality = same_quant ? picture.quality : 0;
1723                     if (ret < 0)
1724                         return ret;
1725                     if (!got_output) {
1726                         /* no picture yet */
1727                         goto discard_packet;
1728                     }
1729                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1730                     if (ist->st->codec->time_base.num != 0) {
1731                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1732                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1733                                           ist->st->codec->time_base.num * ticks) /
1734                             ist->st->codec->time_base.den;
1735                     }
1736                     avpkt.size = 0;
1737                     buffer_to_free = NULL;
1738                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1739                     break;
1740             case AVMEDIA_TYPE_SUBTITLE:
1741                 ret = avcodec_decode_subtitle2(ist->st->codec,
1742                                                &subtitle, &got_output, &avpkt);
1743                 if (ret < 0)
1744                     return ret;
1745                 if (!got_output) {
1746                     goto discard_packet;
1747                 }
1748                 subtitle_to_free = &subtitle;
1749                 avpkt.size = 0;
1750                 break;
1751             default:
1752                 return -1;
1753             }
1754         } else {
1755             switch(ist->st->codec->codec_type) {
1756             case AVMEDIA_TYPE_AUDIO:
1757                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1758                     ist->st->codec->sample_rate;
1759                 break;
1760             case AVMEDIA_TYPE_VIDEO:
1761                 if (ist->st->codec->time_base.num != 0) {
1762                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1763                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1764                                       ist->st->codec->time_base.num * ticks) /
1765                         ist->st->codec->time_base.den;
1766                 }
1767                 break;
1768             }
1769             avpkt.size = 0;
1770         }
1771
1772 #if CONFIG_AVFILTER
1773         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1774         for(i=0;i<nb_ostreams;i++) {
1775             OutputFile *of = &output_files[ost_table[i].file_index];
1776             if (of->start_time == 0 || ist->pts >= of->start_time) {
1777                 ost = &ost_table[i];
1778                 if (ost->input_video_filter && ost->source_index == ist_index) {
1779                     if (!picture.sample_aspect_ratio.num)
1780                         picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1781                     picture.pts = ist->pts;
1782
1783                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1784                 }
1785             }
1786         }
1787 #endif
1788
1789         // preprocess audio (volume)
1790         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1791             if (audio_volume != 256) {
1792                 short *volp;
1793                 volp = samples;
1794                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1795                     int v = ((*volp) * audio_volume + 128) >> 8;
1796                     *volp++ = av_clip_int16(v);
1797                 }
1798             }
1799         }
1800
1801         /* frame rate emulation */
1802         if (input_files[ist->file_index].rate_emu) {
1803             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1804             int64_t now = av_gettime() - ist->start;
1805             if (pts > now)
1806                 usleep(pts - now);
1807         }
1808         /* if output time reached then transcode raw format,
1809            encode packets and output them */
1810         for (i = 0; i < nb_ostreams; i++) {
1811             OutputFile *of = &output_files[ost_table[i].file_index];
1812             int frame_size;
1813
1814             ost = &ost_table[i];
1815             if (ost->source_index != ist_index)
1816                 continue;
1817
1818             if (of->start_time && ist->pts < of->start_time)
1819                 continue;
1820
1821             if (of->recording_time != INT64_MAX &&
1822                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1823                               (AVRational){1, 1000000}) >= 0) {
1824                 ost->is_past_recording_time = 1;
1825                 continue;
1826             }
1827
1828 #if CONFIG_AVFILTER
1829             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1830                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1831             while (frame_available) {
1832                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1833                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1834                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1835                         goto cont;
1836                     if (ost->picref) {
1837                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1838                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1839                     }
1840                 }
1841 #endif
1842                 os = output_files[ost->file_index].ctx;
1843
1844                 /* set the input output pts pairs */
1845                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1846
1847                 if (ost->encoding_needed) {
1848                     av_assert0(ist->decoding_needed);
1849                     switch(ost->st->codec->codec_type) {
1850                     case AVMEDIA_TYPE_AUDIO:
1851                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1852                         break;
1853                     case AVMEDIA_TYPE_VIDEO:
1854 #if CONFIG_AVFILTER
1855                         if (ost->picref->video && !ost->frame_aspect_ratio)
1856                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1857 #endif
1858                         do_video_out(os, ost, ist, &picture, &frame_size,
1859                                         same_quant ? quality : ost->st->codec->global_quality);
1860                         if (vstats_filename && frame_size)
1861                             do_video_stats(os, ost, frame_size);
1862                         break;
1863                     case AVMEDIA_TYPE_SUBTITLE:
1864                         do_subtitle_out(os, ost, ist, &subtitle,
1865                                         pkt->pts);
1866                         break;
1867                     default:
1868                         abort();
1869                     }
1870                 } else {
1871                     AVFrame avframe; //FIXME/XXX remove this
1872                     AVPicture pict;
1873                     AVPacket opkt;
1874                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1875                     av_init_packet(&opkt);
1876
1877                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1878 #if !CONFIG_AVFILTER
1879                         continue;
1880 #else
1881                         goto cont;
1882 #endif
1883
1884                     /* no reencoding needed : output the packet directly */
1885                     /* force the input stream PTS */
1886
1887                     avcodec_get_frame_defaults(&avframe);
1888                     ost->st->codec->coded_frame= &avframe;
1889                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1890
1891                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1892                         audio_size += data_size;
1893                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1894                         video_size += data_size;
1895                         ost->sync_opts++;
1896                     }
1897
1898                     opkt.stream_index= ost->index;
1899                     if(pkt->pts != AV_NOPTS_VALUE)
1900                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1901                     else
1902                         opkt.pts= AV_NOPTS_VALUE;
1903
1904                     if (pkt->dts == AV_NOPTS_VALUE)
1905                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1906                     else
1907                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1908                     opkt.dts -= ost_tb_start_time;
1909
1910                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1911                     opkt.flags= pkt->flags;
1912
1913                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1914                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1915                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1916                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1917                        ) {
1918                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1919                             opkt.destruct= av_destruct_packet;
1920                     } else {
1921                         opkt.data = data_buf;
1922                         opkt.size = data_size;
1923                     }
1924
1925                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1926                         /* store AVPicture in AVPacket, as expected by the output format */
1927                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1928                         opkt.data = (uint8_t *)&pict;
1929                         opkt.size = sizeof(AVPicture);
1930                         opkt.flags |= AV_PKT_FLAG_KEY;
1931                     }
1932                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1933                     ost->st->codec->frame_number++;
1934                     ost->frame_number++;
1935                     av_free_packet(&opkt);
1936                 }
1937 #if CONFIG_AVFILTER
1938                 cont:
1939                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1940                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1941                 avfilter_unref_buffer(ost->picref);
1942             }
1943 #endif
1944         }
1945
1946         av_free(buffer_to_free);
1947         /* XXX: allocate the subtitles in the codec ? */
1948         if (subtitle_to_free) {
1949             avsubtitle_free(subtitle_to_free);
1950             subtitle_to_free = NULL;
1951         }
1952     }
1953  discard_packet:
1954
1955     return 0;
1956 }
1957
1958 static void print_sdp(OutputFile *output_files, int n)
1959 {
1960     char sdp[2048];
1961     int i;
1962     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1963
1964     if (!avc)
1965         exit_program(1);
1966     for (i = 0; i < n; i++)
1967         avc[i] = output_files[i].ctx;
1968
1969     av_sdp_create(avc, n, sdp, sizeof(sdp));
1970     printf("SDP:\n%s\n", sdp);
1971     fflush(stdout);
1972     av_freep(&avc);
1973 }
1974
1975 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1976                              char *error, int error_len)
1977 {
1978     InputStream *ist = &input_streams[ist_index];
1979     if (ist->decoding_needed) {
1980         AVCodec *codec = ist->dec;
1981         if (!codec) {
1982             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d.%d",
1983                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1984             return AVERROR(EINVAL);
1985         }
1986         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1987             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1988                     ist->file_index, ist->st->index);
1989             return AVERROR(EINVAL);
1990         }
1991         assert_codec_experimental(ist->st->codec, 0);
1992         assert_avoptions(ist->opts);
1993     }
1994
1995     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;
1996     ist->next_pts = AV_NOPTS_VALUE;
1997     ist->is_start = 1;
1998
1999     return 0;
2000 }
2001
2002 static int transcode_init(OutputFile *output_files, int nb_output_files,
2003                           InputFile  *input_files,  int nb_input_files)
2004 {
2005     int ret = 0, i, j, k;
2006     AVFormatContext *os;
2007     AVCodecContext *codec, *icodec;
2008     OutputStream *ost;
2009     InputStream *ist;
2010     char error[1024];
2011     int want_sdp = 1;
2012
2013     /* init framerate emulation */
2014     for (i = 0; i < nb_input_files; i++) {
2015         InputFile *ifile = &input_files[i];
2016         if (ifile->rate_emu)
2017             for (j = 0; j < ifile->nb_streams; j++)
2018                 input_streams[j + ifile->ist_index].start = av_gettime();
2019     }
2020
2021     /* output stream init */
2022     for(i=0;i<nb_output_files;i++) {
2023         os = output_files[i].ctx;
2024         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2025             av_dump_format(os, i, os->filename, 1);
2026             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2027             return AVERROR(EINVAL);
2028         }
2029     }
2030
2031     /* for each output stream, we compute the right encoding parameters */
2032     for (i = 0; i < nb_output_streams; i++) {
2033         ost = &output_streams[i];
2034         os = output_files[ost->file_index].ctx;
2035         ist = &input_streams[ost->source_index];
2036
2037         codec = ost->st->codec;
2038         icodec = ist->st->codec;
2039
2040         ost->st->disposition = ist->st->disposition;
2041         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2042         codec->chroma_sample_location = icodec->chroma_sample_location;
2043
2044         if (ost->st->stream_copy) {
2045             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2046
2047             if (extra_size > INT_MAX) {
2048                 return AVERROR(EINVAL);
2049             }
2050
2051             /* if stream_copy is selected, no need to decode or encode */
2052             codec->codec_id = icodec->codec_id;
2053             codec->codec_type = icodec->codec_type;
2054
2055             if(!codec->codec_tag){
2056                 if(   !os->oformat->codec_tag
2057                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2058                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2059                     codec->codec_tag = icodec->codec_tag;
2060             }
2061
2062             codec->bit_rate = icodec->bit_rate;
2063             codec->rc_max_rate    = icodec->rc_max_rate;
2064             codec->rc_buffer_size = icodec->rc_buffer_size;
2065             codec->extradata= av_mallocz(extra_size);
2066             if (!codec->extradata) {
2067                 return AVERROR(ENOMEM);
2068             }
2069             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2070             codec->extradata_size= icodec->extradata_size;
2071
2072             codec->time_base = ist->st->time_base;
2073             if(!strcmp(os->oformat->name, "avi")) {
2074                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2075                     codec->time_base = icodec->time_base;
2076                     codec->time_base.num *= icodec->ticks_per_frame;
2077                     codec->time_base.den *= 2;
2078                 }
2079             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2080                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2081                     codec->time_base = icodec->time_base;
2082                     codec->time_base.num *= icodec->ticks_per_frame;
2083                 }
2084             }
2085             av_reduce(&codec->time_base.num, &codec->time_base.den,
2086                         codec->time_base.num, codec->time_base.den, INT_MAX);
2087
2088             switch(codec->codec_type) {
2089             case AVMEDIA_TYPE_AUDIO:
2090                 if(audio_volume != 256) {
2091                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2092                     exit_program(1);
2093                 }
2094                 codec->channel_layout = icodec->channel_layout;
2095                 codec->sample_rate = icodec->sample_rate;
2096                 codec->channels = icodec->channels;
2097                 codec->frame_size = icodec->frame_size;
2098                 codec->audio_service_type = icodec->audio_service_type;
2099                 codec->block_align= icodec->block_align;
2100                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2101                     codec->block_align= 0;
2102                 if(codec->codec_id == CODEC_ID_AC3)
2103                     codec->block_align= 0;
2104                 break;
2105             case AVMEDIA_TYPE_VIDEO:
2106                 codec->pix_fmt = icodec->pix_fmt;
2107                 codec->width = icodec->width;
2108                 codec->height = icodec->height;
2109                 codec->has_b_frames = icodec->has_b_frames;
2110                 if (!codec->sample_aspect_ratio.num) {
2111                     codec->sample_aspect_ratio =
2112                     ost->st->sample_aspect_ratio =
2113                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2114                         ist->st->codec->sample_aspect_ratio.num ?
2115                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2116                 }
2117                 break;
2118             case AVMEDIA_TYPE_SUBTITLE:
2119                 codec->width = icodec->width;
2120                 codec->height = icodec->height;
2121                 break;
2122             case AVMEDIA_TYPE_DATA:
2123                 break;
2124             default:
2125                 abort();
2126             }
2127         } else {
2128             if (!ost->enc)
2129                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2130             switch(codec->codec_type) {
2131             case AVMEDIA_TYPE_AUDIO:
2132                 ost->fifo= av_fifo_alloc(1024);
2133                 if (!ost->fifo) {
2134                     return AVERROR(ENOMEM);
2135                 }
2136                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2137                 if (!codec->sample_rate) {
2138                     codec->sample_rate = icodec->sample_rate;
2139                 }
2140                 choose_sample_rate(ost->st, ost->enc);
2141                 codec->time_base = (AVRational){1, codec->sample_rate};
2142                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2143                     codec->sample_fmt = icodec->sample_fmt;
2144                 choose_sample_fmt(ost->st, ost->enc);
2145                 if (!codec->channels) {
2146                     codec->channels = icodec->channels;
2147                     codec->channel_layout = icodec->channel_layout;
2148                 }
2149                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2150                     codec->channel_layout = 0;
2151                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2152                 icodec->request_channels = codec->channels;
2153                 ist->decoding_needed = 1;
2154                 ost->encoding_needed = 1;
2155                 ost->resample_sample_fmt  = icodec->sample_fmt;
2156                 ost->resample_sample_rate = icodec->sample_rate;
2157                 ost->resample_channels    = icodec->channels;
2158                 break;
2159             case AVMEDIA_TYPE_VIDEO:
2160                 if (codec->pix_fmt == PIX_FMT_NONE)
2161                     codec->pix_fmt = icodec->pix_fmt;
2162                 choose_pixel_fmt(ost->st, ost->enc);
2163
2164                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2165                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2166                     exit_program(1);
2167                 }
2168
2169                 if (!codec->width || !codec->height) {
2170                     codec->width  = icodec->width;
2171                     codec->height = icodec->height;
2172                 }
2173
2174                 ost->video_resample = codec->width   != icodec->width  ||
2175                                       codec->height  != icodec->height ||
2176                                       codec->pix_fmt != icodec->pix_fmt;
2177                 if (ost->video_resample) {
2178                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2179                 }
2180
2181                 ost->resample_height = icodec->height;
2182                 ost->resample_width  = icodec->width;
2183                 ost->resample_pix_fmt= icodec->pix_fmt;
2184                 ost->encoding_needed = 1;
2185                 ist->decoding_needed = 1;
2186
2187                 if (!ost->frame_rate.num)
2188                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2189                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2190                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2191                     ost->frame_rate = ost->enc->supported_framerates[idx];
2192                 }
2193                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2194                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2195                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2196                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2197                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2198                 }
2199
2200 #if CONFIG_AVFILTER
2201                 if (configure_video_filters(ist, ost)) {
2202                     fprintf(stderr, "Error opening filters!\n");
2203                     exit(1);
2204                 }
2205 #endif
2206                 break;
2207             case AVMEDIA_TYPE_SUBTITLE:
2208                 ost->encoding_needed = 1;
2209                 ist->decoding_needed = 1;
2210                 break;
2211             default:
2212                 abort();
2213                 break;
2214             }
2215             /* two pass mode */
2216             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2217                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2218                 char logfilename[1024];
2219                 FILE *f;
2220
2221                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2222                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2223                          i);
2224                 if (codec->flags & CODEC_FLAG_PASS1) {
2225                     f = fopen(logfilename, "wb");
2226                     if (!f) {
2227                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2228                         exit_program(1);
2229                     }
2230                     ost->logfile = f;
2231                 } else {
2232                     char  *logbuffer;
2233                     size_t logbuffer_size;
2234                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2235                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2236                         exit_program(1);
2237                     }
2238                     codec->stats_in = logbuffer;
2239                 }
2240             }
2241         }
2242         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2243             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2244             int size= codec->width * codec->height;
2245             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2246         }
2247     }
2248
2249     if (!bit_buffer)
2250         bit_buffer = av_malloc(bit_buffer_size);
2251     if (!bit_buffer) {
2252         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2253                 bit_buffer_size);
2254         return AVERROR(ENOMEM);
2255     }
2256
2257     /* open each encoder */
2258     for (i = 0; i < nb_output_streams; i++) {
2259         ost = &output_streams[i];
2260         if (ost->encoding_needed) {
2261             AVCodec *codec = ost->enc;
2262             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2263             if (!codec) {
2264                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d.%d",
2265                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2266                 ret = AVERROR(EINVAL);
2267                 goto dump_format;
2268             }
2269             if (dec->subtitle_header) {
2270                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2271                 if (!ost->st->codec->subtitle_header) {
2272                     ret = AVERROR(ENOMEM);
2273                     goto dump_format;
2274                 }
2275                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2276                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2277             }
2278             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2279                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2280                         ost->file_index, ost->index);
2281                 ret = AVERROR(EINVAL);
2282                 goto dump_format;
2283             }
2284             assert_codec_experimental(ost->st->codec, 1);
2285             assert_avoptions(ost->opts);
2286             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2287                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2288                                              "It takes bits/s as argument, not kbits/s\n");
2289             extra_size += ost->st->codec->extradata_size;
2290
2291             if (ost->st->codec->me_threshold)
2292                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2293         }
2294     }
2295
2296     /* init input streams */
2297     for (i = 0; i < nb_input_streams; i++)
2298         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2299             goto dump_format;
2300
2301     /* discard unused programs */
2302     for (i = 0; i < nb_input_files; i++) {
2303         InputFile *ifile = &input_files[i];
2304         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2305             AVProgram *p = ifile->ctx->programs[j];
2306             int discard  = AVDISCARD_ALL;
2307
2308             for (k = 0; k < p->nb_stream_indexes; k++)
2309                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2310                     discard = AVDISCARD_DEFAULT;
2311                     break;
2312                 }
2313             p->discard = discard;
2314         }
2315     }
2316
2317     /* open files and write file headers */
2318     for (i = 0; i < nb_output_files; i++) {
2319         os = output_files[i].ctx;
2320         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2321             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2322             ret = AVERROR(EINVAL);
2323             goto dump_format;
2324         }
2325 //        assert_avoptions(output_files[i].opts);
2326         if (strcmp(os->oformat->name, "rtp")) {
2327             want_sdp = 0;
2328         }
2329     }
2330
2331  dump_format:
2332     /* dump the file output parameters - cannot be done before in case
2333        of stream copy */
2334     for(i=0;i<nb_output_files;i++) {
2335         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2336     }
2337
2338     /* dump the stream mapping */
2339     if (verbose >= 0) {
2340         fprintf(stderr, "Stream mapping:\n");
2341         for (i = 0; i < nb_output_streams;i ++) {
2342             ost = &output_streams[i];
2343             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2344                     input_streams[ost->source_index].file_index,
2345                     input_streams[ost->source_index].st->index,
2346                     ost->file_index,
2347                     ost->index);
2348             if (ost->sync_ist != &input_streams[ost->source_index])
2349                 fprintf(stderr, " [sync #%d.%d]",
2350                         ost->sync_ist->file_index,
2351                         ost->sync_ist->st->index);
2352             if (ost->st->stream_copy)
2353                 fprintf(stderr, " (copy)");
2354             else
2355                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2356                         input_streams[ost->source_index].dec->name : "?",
2357                         ost->enc ? ost->enc->name : "?");
2358             fprintf(stderr, "\n");
2359         }
2360     }
2361
2362     if (ret) {
2363         fprintf(stderr, "%s\n", error);
2364         return ret;
2365     }
2366
2367     if (want_sdp) {
2368         print_sdp(output_files, nb_output_files);
2369     }
2370
2371     return 0;
2372 }
2373
2374 /*
2375  * The following code is the main loop of the file converter
2376  */
2377 static int transcode(OutputFile *output_files, int nb_output_files,
2378                      InputFile  *input_files,  int nb_input_files)
2379 {
2380     int ret, i;
2381     AVFormatContext *is, *os;
2382     OutputStream *ost;
2383     InputStream *ist;
2384     uint8_t *no_packet;
2385     int no_packet_count=0;
2386     int64_t timer_start;
2387     int key;
2388
2389     if (!(no_packet = av_mallocz(nb_input_files)))
2390         exit_program(1);
2391
2392     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2393     if (ret < 0)
2394         goto fail;
2395
2396     if (!using_stdin) {
2397         if(verbose >= 0)
2398             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2399         avio_set_interrupt_cb(decode_interrupt_cb);
2400     }
2401     term_init();
2402
2403     timer_start = av_gettime();
2404
2405     for(; received_sigterm == 0;) {
2406         int file_index, ist_index;
2407         AVPacket pkt;
2408         int64_t ipts_min;
2409         double opts_min;
2410
2411         ipts_min= INT64_MAX;
2412         opts_min= 1e100;
2413         /* if 'q' pressed, exits */
2414         if (!using_stdin) {
2415             if (q_pressed)
2416                 break;
2417             /* read_key() returns 0 on EOF */
2418             key = read_key();
2419             if (key == 'q')
2420                 break;
2421             if (key == '+') verbose++;
2422             if (key == '-') verbose--;
2423             if (key == 's') qp_hist     ^= 1;
2424             if (key == 'h'){
2425                 if (do_hex_dump){
2426                     do_hex_dump = do_pkt_dump = 0;
2427                 } else if(do_pkt_dump){
2428                     do_hex_dump = 1;
2429                 } else
2430                     do_pkt_dump = 1;
2431                 av_log_set_level(AV_LOG_DEBUG);
2432             }
2433 #if CONFIG_AVFILTER
2434             if (key == 'c' || key == 'C'){
2435                 char ret[4096], target[64], cmd[256], arg[256]={0};
2436                 double ts;
2437                 int k;
2438                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2439                 i=0;
2440                 while((k=read_key()) !='\n' && k!='\r' && i<sizeof(ret)-1)
2441                     if(k>0) ret[i++]= k;
2442                 ret[i]= 0;
2443                 if(k>0 && sscanf(ret, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &ts, cmd, arg) >= 3){
2444                     for(i=0;i<nb_output_streams;i++) {
2445                         int r;
2446                         ost = &output_streams[i];
2447                         if(ost->graph){
2448                             if(ts<0){
2449                                 r= avfilter_graph_send_command(ost->graph, target, cmd, arg, ret, sizeof(ret), key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2450                                 fprintf(stderr, "Command reply for %d: %d, %s\n", i, r, ret);
2451                             }else{
2452                                 r= avfilter_graph_queue_command(ost->graph, target, cmd, arg, 0, ts);
2453                             }
2454                         }
2455                     }
2456                 }else{
2457                     fprintf(stderr, "Parse error\n");
2458                 }
2459             }
2460 #endif
2461             if (key == 'd' || key == 'D'){
2462                 int debug=0;
2463                 if(key == 'D') {
2464                     debug = input_streams[0].st->codec->debug<<1;
2465                     if(!debug) debug = 1;
2466                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2467                         debug += debug;
2468                 }else
2469                     scanf("%d", &debug);
2470                 for(i=0;i<nb_input_streams;i++) {
2471                     input_streams[i].st->codec->debug = debug;
2472                 }
2473                 for(i=0;i<nb_output_streams;i++) {
2474                     ost = &output_streams[i];
2475                     ost->st->codec->debug = debug;
2476                 }
2477                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2478                 fprintf(stderr,"debug=%d\n", debug);
2479             }
2480             if (key == '?'){
2481                 fprintf(stderr, "key    function\n"
2482                                 "?      show this help\n"
2483                                 "+      increase verbosity\n"
2484                                 "-      decrease verbosity\n"
2485                                 "c      Send command to filtergraph\n"
2486                                 "D      cycle through available debug modes\n"
2487                                 "h      dump packets/hex press to cycle through the 3 states\n"
2488                                 "q      quit\n"
2489                                 "s      Show QP histogram\n"
2490                 );
2491             }
2492         }
2493
2494         /* select the stream that we must read now by looking at the
2495            smallest output pts */
2496         file_index = -1;
2497         for (i = 0; i < nb_output_streams; i++) {
2498             OutputFile *of;
2499             int64_t ipts;
2500             double  opts;
2501             ost = &output_streams[i];
2502             of = &output_files[ost->file_index];
2503             os = output_files[ost->file_index].ctx;
2504             ist = &input_streams[ost->source_index];
2505             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2506                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2507                 continue;
2508             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2509             ipts = ist->pts;
2510             if (!input_files[ist->file_index].eof_reached){
2511                 if(ipts < ipts_min) {
2512                     ipts_min = ipts;
2513                     if(input_sync ) file_index = ist->file_index;
2514                 }
2515                 if(opts < opts_min) {
2516                     opts_min = opts;
2517                     if(!input_sync) file_index = ist->file_index;
2518                 }
2519             }
2520             if (ost->frame_number >= ost->max_frames) {
2521                 int j;
2522                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2523                     output_streams[j].is_past_recording_time = 1;
2524                 continue;
2525             }
2526         }
2527         /* if none, if is finished */
2528         if (file_index < 0) {
2529             if(no_packet_count){
2530                 no_packet_count=0;
2531                 memset(no_packet, 0, nb_input_files);
2532                 usleep(10000);
2533                 continue;
2534             }
2535             break;
2536         }
2537
2538         /* read a frame from it and output it in the fifo */
2539         is = input_files[file_index].ctx;
2540         ret= av_read_frame(is, &pkt);
2541         if(ret == AVERROR(EAGAIN)){
2542             no_packet[file_index]=1;
2543             no_packet_count++;
2544             continue;
2545         }
2546         if (ret < 0) {
2547             input_files[file_index].eof_reached = 1;
2548             if (opt_shortest)
2549                 break;
2550             else
2551                 continue;
2552         }
2553
2554         no_packet_count=0;
2555         memset(no_packet, 0, nb_input_files);
2556
2557         if (do_pkt_dump) {
2558             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2559                              is->streams[pkt.stream_index]);
2560         }
2561         /* the following test is needed in case new streams appear
2562            dynamically in stream : we ignore them */
2563         if (pkt.stream_index >= input_files[file_index].nb_streams)
2564             goto discard_packet;
2565         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2566         ist = &input_streams[ist_index];
2567         if (ist->discard)
2568             goto discard_packet;
2569
2570         if (pkt.dts != AV_NOPTS_VALUE)
2571             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2572         if (pkt.pts != AV_NOPTS_VALUE)
2573             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2574
2575         if(pkt.pts != AV_NOPTS_VALUE)
2576             pkt.pts *= ist->ts_scale;
2577         if(pkt.dts != AV_NOPTS_VALUE)
2578             pkt.dts *= ist->ts_scale;
2579
2580 //        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);
2581         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2582             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2583             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2584             int64_t delta= pkt_dts - ist->next_pts;
2585             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2586                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2587                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2588                 pkt_dts+1<ist->pts)&& !copy_ts){
2589                 input_files[ist->file_index].ts_offset -= delta;
2590                 if (verbose > 2)
2591                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2592                             delta, input_files[ist->file_index].ts_offset);
2593                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2594                 if(pkt.pts != AV_NOPTS_VALUE)
2595                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2596             }
2597         }
2598
2599         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2600         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2601
2602             if (verbose >= 0)
2603                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2604                         ist->file_index, ist->st->index);
2605             if (exit_on_error)
2606                 exit_program(1);
2607             av_free_packet(&pkt);
2608             continue;
2609         }
2610
2611     discard_packet:
2612         av_free_packet(&pkt);
2613
2614         /* dump report by using the output first video and audio streams */
2615         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2616     }
2617
2618     /* at the end of stream, we must flush the decoder buffers */
2619     for (i = 0; i < nb_input_streams; i++) {
2620         ist = &input_streams[i];
2621         if (ist->decoding_needed) {
2622             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2623         }
2624     }
2625     flush_encoders(output_streams, nb_output_streams);
2626
2627     term_exit();
2628
2629     /* write the trailer if needed and close file */
2630     for(i=0;i<nb_output_files;i++) {
2631         os = output_files[i].ctx;
2632         av_write_trailer(os);
2633     }
2634
2635     /* dump report by using the first video and audio streams */
2636     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2637
2638     /* close each encoder */
2639     for (i = 0; i < nb_output_streams; i++) {
2640         ost = &output_streams[i];
2641         if (ost->encoding_needed) {
2642             av_freep(&ost->st->codec->stats_in);
2643             avcodec_close(ost->st->codec);
2644         }
2645 #if CONFIG_AVFILTER
2646         avfilter_graph_free(&ost->graph);
2647 #endif
2648     }
2649
2650     /* close each decoder */
2651     for (i = 0; i < nb_input_streams; i++) {
2652         ist = &input_streams[i];
2653         if (ist->decoding_needed) {
2654             avcodec_close(ist->st->codec);
2655         }
2656     }
2657
2658     /* finished ! */
2659     ret = 0;
2660
2661  fail:
2662     av_freep(&bit_buffer);
2663     av_freep(&no_packet);
2664
2665     if (output_streams) {
2666         for (i = 0; i < nb_output_streams; i++) {
2667             ost = &output_streams[i];
2668             if (ost) {
2669                 if (ost->st->stream_copy)
2670                     av_freep(&ost->st->codec->extradata);
2671                 if (ost->logfile) {
2672                     fclose(ost->logfile);
2673                     ost->logfile = NULL;
2674                 }
2675                 av_fifo_free(ost->fifo); /* works even if fifo is not
2676                                              initialized but set to zero */
2677                 av_freep(&ost->st->codec->subtitle_header);
2678                 av_free(ost->resample_frame.data[0]);
2679                 av_free(ost->forced_kf_pts);
2680                 if (ost->video_resample)
2681                     sws_freeContext(ost->img_resample_ctx);
2682                 if (ost->resample)
2683                     audio_resample_close(ost->resample);
2684                 if (ost->reformat_ctx)
2685                     av_audio_convert_free(ost->reformat_ctx);
2686                 av_dict_free(&ost->opts);
2687             }
2688         }
2689     }
2690     return ret;
2691 }
2692
2693 static int opt_verbose(const char *opt, const char *arg)
2694 {
2695     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2696     return 0;
2697 }
2698
2699 static int opt_frame_crop(const char *opt, const char *arg)
2700 {
2701     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2702     return AVERROR(EINVAL);
2703 }
2704
2705 static int opt_pad(const char *opt, const char *arg)
2706 {
2707     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2708     return -1;
2709 }
2710
2711 static double parse_frame_aspect_ratio(const char *arg)
2712 {
2713     int x = 0, y = 0;
2714     double ar = 0;
2715     const char *p;
2716     char *end;
2717
2718     p = strchr(arg, ':');
2719     if (p) {
2720         x = strtol(arg, &end, 10);
2721         if (end == p)
2722             y = strtol(end+1, &end, 10);
2723         if (x > 0 && y > 0)
2724             ar = (double)x / (double)y;
2725     } else
2726         ar = strtod(arg, NULL);
2727
2728     if (!ar) {
2729         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2730         exit_program(1);
2731     }
2732     return ar;
2733 }
2734
2735 static int opt_video_channel(const char *opt, const char *arg)
2736 {
2737     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2738     return opt_default("channel", arg);
2739 }
2740
2741 static int opt_video_standard(const char *opt, const char *arg)
2742 {
2743     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2744     return opt_default("standard", arg);
2745 }
2746
2747 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2748 {
2749     audio_codec_name = arg;
2750     return parse_option(o, "codec:a", arg, options);
2751 }
2752
2753 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2754 {
2755     video_codec_name = arg;
2756     return parse_option(o, "codec:v", arg, options);
2757 }
2758
2759 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2760 {
2761     subtitle_codec_name = arg;
2762     return parse_option(o, "codec:s", arg, options);
2763 }
2764
2765 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2766 {
2767     return parse_option(o, "codec:d", arg, options);
2768 }
2769
2770 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2771 {
2772     StreamMap *m = NULL;
2773     int i, negative = 0, file_idx;
2774     int sync_file_idx = -1, sync_stream_idx;
2775     char *p, *sync;
2776     char *map;
2777
2778     if (*arg == '-') {
2779         negative = 1;
2780         arg++;
2781     }
2782     map = av_strdup(arg);
2783
2784     /* parse sync stream first, just pick first matching stream */
2785     if (sync = strchr(map, ',')) {
2786         *sync = 0;
2787         sync_file_idx = strtol(sync + 1, &sync, 0);
2788         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2789             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2790             exit_program(1);
2791         }
2792         if (*sync)
2793             sync++;
2794         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2795             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2796                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2797                 sync_stream_idx = i;
2798                 break;
2799             }
2800         if (i == input_files[sync_file_idx].nb_streams) {
2801             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2802                                        "match any streams.\n", arg);
2803             exit_program(1);
2804         }
2805     }
2806
2807
2808     file_idx = strtol(map, &p, 0);
2809     if (file_idx >= nb_input_files || file_idx < 0) {
2810         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2811         exit_program(1);
2812     }
2813     if (negative)
2814         /* disable some already defined maps */
2815         for (i = 0; i < o->nb_stream_maps; i++) {
2816             m = &o->stream_maps[i];
2817             if (check_stream_specifier(input_files[m->file_index].ctx,
2818                                        input_files[m->file_index].ctx->streams[m->stream_index],
2819                                        *p == ':' ? p + 1 : p) > 0)
2820                 m->disabled = 1;
2821         }
2822     else
2823         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2824             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2825                         *p == ':' ? p + 1 : p) <= 0)
2826                 continue;
2827             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2828                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2829             m = &o->stream_maps[o->nb_stream_maps - 1];
2830
2831             m->file_index   = file_idx;
2832             m->stream_index = i;
2833
2834             if (sync_file_idx >= 0) {
2835                 m->sync_file_index   = sync_file_idx;
2836                 m->sync_stream_index = sync_stream_idx;
2837             } else {
2838                 m->sync_file_index   = file_idx;
2839                 m->sync_stream_index = i;
2840             }
2841         }
2842
2843     if (!m) {
2844         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2845         exit_program(1);
2846     }
2847
2848     av_freep(&map);
2849     return 0;
2850 }
2851
2852 static void parse_meta_type(char *arg, char *type, int *index)
2853 {
2854     if (*arg) {
2855         *type = *arg;
2856         switch (*arg) {
2857         case 'g':
2858             break;
2859         case 's':
2860         case 'c':
2861         case 'p':
2862             if (*(++arg) == ':')
2863                 *index = strtol(++arg, NULL, 0);
2864             break;
2865         default:
2866             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2867             exit_program(1);
2868         }
2869     } else
2870         *type = 'g';
2871 }
2872
2873 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2874 {
2875     MetadataMap *m, *m1;
2876     char *p;
2877
2878     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2879                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2880
2881     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2882     m->file = strtol(arg, &p, 0);
2883     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2884
2885     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2886     if (p = strchr(opt, ':'))
2887         parse_meta_type(p + 1, &m1->type, &m1->index);
2888     else
2889         m1->type = 'g';
2890
2891     if (m->type == 'g' || m1->type == 'g')
2892         o->metadata_global_manual = 1;
2893     if (m->type == 's' || m1->type == 's')
2894         o->metadata_streams_manual = 1;
2895     if (m->type == 'c' || m1->type == 'c')
2896         o->metadata_chapters_manual = 1;
2897
2898     return 0;
2899 }
2900
2901 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
2902 {
2903     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2904                     "Use -map_metadata instead.\n");
2905     return opt_map_metadata(o, opt, arg);
2906 }
2907
2908 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
2909 {
2910     char buf[128];
2911     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
2912     struct tm time = *gmtime((time_t*)&recording_timestamp);
2913     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
2914     parse_option(o, "metadata", buf, options);
2915
2916     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
2917                                  "tag instead.\n", opt);
2918     return 0;
2919 }
2920
2921 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2922 {
2923     const char *codec_string = encoder ? "encoder" : "decoder";
2924     AVCodec *codec;
2925
2926     if(!name)
2927         return CODEC_ID_NONE;
2928     codec = encoder ?
2929         avcodec_find_encoder_by_name(name) :
2930         avcodec_find_decoder_by_name(name);
2931     if(!codec) {
2932         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2933         exit_program(1);
2934     }
2935     if(codec->type != type) {
2936         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2937         exit_program(1);
2938     }
2939     return codec->id;
2940 }
2941
2942 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2943 {
2944     char *codec_name = NULL;
2945
2946     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2947
2948     if (!codec_name) {
2949         if (s->oformat) {
2950             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2951             return avcodec_find_encoder(st->codec->codec_id);
2952         }
2953     } else if (!strcmp(codec_name, "copy"))
2954         st->stream_copy = 1;
2955     else {
2956         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2957         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2958                             avcodec_find_decoder_by_name(codec_name);
2959     }
2960
2961     return NULL;
2962 }
2963
2964 /**
2965  * Add all the streams from the given input file to the global
2966  * list of input streams.
2967  */
2968 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2969 {
2970     int i, rfps, rfps_base;
2971
2972     for (i = 0; i < ic->nb_streams; i++) {
2973         AVStream *st = ic->streams[i];
2974         AVCodecContext *dec = st->codec;
2975         InputStream *ist;
2976         double scale = 1.0;
2977
2978         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2979         ist = &input_streams[nb_input_streams - 1];
2980         ist->st = st;
2981         ist->file_index = nb_input_files;
2982         ist->discard = 1;
2983         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2984
2985         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2986         ist->ts_scale = scale;
2987
2988         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2989         if (!ist->dec)
2990             ist->dec = avcodec_find_decoder(dec->codec_id);
2991
2992         switch (dec->codec_type) {
2993         case AVMEDIA_TYPE_AUDIO:
2994             if(!ist->dec)
2995                 ist->dec = avcodec_find_decoder(dec->codec_id);
2996             if(o->audio_disable)
2997                 st->discard= AVDISCARD_ALL;
2998             break;
2999         case AVMEDIA_TYPE_VIDEO:
3000             if(!ist->dec)
3001                 ist->dec = avcodec_find_decoder(dec->codec_id);
3002             rfps      = ic->streams[i]->r_frame_rate.num;
3003             rfps_base = ic->streams[i]->r_frame_rate.den;
3004             if (dec->lowres) {
3005                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3006             }
3007
3008             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3009
3010                 if (verbose >= 0)
3011                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3012                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3013
3014                     (float)rfps / rfps_base, rfps, rfps_base);
3015             }
3016
3017             if (o->video_disable)
3018                 st->discard= AVDISCARD_ALL;
3019             else if(video_discard)
3020                 st->discard= video_discard;
3021             break;
3022         case AVMEDIA_TYPE_DATA:
3023             break;
3024         case AVMEDIA_TYPE_SUBTITLE:
3025             if(!ist->dec)
3026                 ist->dec = avcodec_find_decoder(dec->codec_id);
3027             if(o->subtitle_disable)
3028                 st->discard = AVDISCARD_ALL;
3029             break;
3030         case AVMEDIA_TYPE_ATTACHMENT:
3031         case AVMEDIA_TYPE_UNKNOWN:
3032             break;
3033         default:
3034             abort();
3035         }
3036     }
3037 }
3038
3039 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3040 {
3041     AVFormatContext *ic;
3042     AVInputFormat *file_iformat = NULL;
3043     int err, i, ret;
3044     int64_t timestamp;
3045     uint8_t buf[128];
3046     AVDictionary **opts;
3047     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3048
3049     if (o->format) {
3050         if (!(file_iformat = av_find_input_format(o->format))) {
3051             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
3052             exit_program(1);
3053         }
3054     }
3055
3056     if (!strcmp(filename, "-"))
3057         filename = "pipe:";
3058
3059     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3060                     !strcmp(filename, "/dev/stdin");
3061
3062     /* get default parameters from command line */
3063     ic = avformat_alloc_context();
3064     if (!ic) {
3065         print_error(filename, AVERROR(ENOMEM));
3066         exit_program(1);
3067     }
3068     if (o->nb_audio_sample_rate) {
3069         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3070         av_dict_set(&format_opts, "sample_rate", buf, 0);
3071     }
3072     if (o->nb_audio_channels) {
3073         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3074         av_dict_set(&format_opts, "channels", buf, 0);
3075     }
3076     if (o->nb_frame_rates) {
3077         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3078     }
3079     if (o->nb_frame_sizes) {
3080         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3081     }
3082     if (o->nb_frame_pix_fmts)
3083         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3084
3085     ic->flags |= AVFMT_FLAG_NONBLOCK;
3086
3087     if (loop_input) {
3088         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3089         ic->loop_input = loop_input;
3090     }
3091
3092     /* open the input file with generic libav function */
3093     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3094     if (err < 0) {
3095         print_error(filename, err);
3096         exit_program(1);
3097     }
3098     assert_avoptions(format_opts);
3099
3100     /* apply forced codec ids */
3101     for (i = 0; i < ic->nb_streams; i++)
3102         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3103
3104     /* Set AVCodecContext options for avformat_find_stream_info */
3105     opts = setup_find_stream_info_opts(ic, codec_opts);
3106     orig_nb_streams = ic->nb_streams;
3107
3108     /* If not enough info to get the stream parameters, we decode the
3109        first frames to get it. (used in mpeg case for example) */
3110     ret = avformat_find_stream_info(ic, opts);
3111     if (ret < 0 && verbose >= 0) {
3112         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3113         av_close_input_file(ic);
3114         exit_program(1);
3115     }
3116
3117     timestamp = o->start_time;
3118     /* add the stream start time */
3119     if (ic->start_time != AV_NOPTS_VALUE)
3120         timestamp += ic->start_time;
3121
3122     /* if seeking requested, we execute it */
3123     if (o->start_time != 0) {
3124         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3125         if (ret < 0) {
3126             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3127                     filename, (double)timestamp / AV_TIME_BASE);
3128         }
3129     }
3130
3131     /* update the current parameters so that they match the one of the input stream */
3132     add_input_streams(o, ic);
3133
3134     /* dump the file content */
3135     if (verbose >= 0)
3136         av_dump_format(ic, nb_input_files, filename, 0);
3137
3138     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3139     input_files[nb_input_files - 1].ctx        = ic;
3140     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3141     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3142     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3143     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3144
3145     for (i = 0; i < orig_nb_streams; i++)
3146         av_dict_free(&opts[i]);
3147     av_freep(&opts);
3148
3149     reset_options(o, 1);
3150     return 0;
3151 }
3152
3153 static void parse_forced_key_frames(char *kf, OutputStream *ost, AVCodecContext *avctx)
3154 {
3155     char *p;
3156     int n = 1, i;
3157     int64_t t;
3158
3159     for (p = kf; *p; p++)
3160         if (*p == ',')
3161             n++;
3162     ost->forced_kf_count = n;
3163     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3164     if (!ost->forced_kf_pts) {
3165         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3166         exit_program(1);
3167     }
3168     for (i = 0; i < n; i++) {
3169         p = i ? strchr(p, ',') + 1 : kf;
3170         t = parse_time_or_die("force_key_frames", p, 1);
3171         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3172     }
3173 }
3174
3175 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3176 {
3177     OutputStream *ost;
3178     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
3179     int idx      = oc->nb_streams - 1;
3180     int64_t max_frames = INT64_MAX;
3181     char *bsf = NULL, *next, *codec_tag = NULL;
3182     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3183     double qscale = -1;
3184
3185     if (!st) {
3186         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3187         exit_program(1);
3188     }
3189
3190     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3191                                 nb_output_streams + 1);
3192     ost = &output_streams[nb_output_streams - 1];
3193     ost->file_index = nb_output_files;
3194     ost->index = idx;
3195     ost->st    = st;
3196     st->codec->codec_type = type;
3197     ost->enc = choose_codec(o, oc, st, type);
3198     if (ost->enc) {
3199         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3200     }
3201
3202     avcodec_get_context_defaults3(st->codec, ost->enc);
3203     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3204
3205     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3206     ost->max_frames = max_frames;
3207
3208     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3209     while (bsf) {
3210         if (next = strchr(bsf, ','))
3211             *next++ = 0;
3212         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3213             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
3214             exit_program(1);
3215         }
3216         if (bsfc_prev)
3217             bsfc_prev->next = bsfc;
3218         else
3219             ost->bitstream_filters = bsfc;
3220
3221         bsfc_prev = bsfc;
3222         bsf       = next;
3223     }
3224
3225     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3226     if (codec_tag) {
3227         uint32_t tag = strtol(codec_tag, &next, 0);
3228         if (*next)
3229             tag = AV_RL32(codec_tag);
3230         st->codec->codec_tag = tag;
3231     }
3232
3233     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3234     if (qscale >= 0 || same_quant) {
3235         st->codec->flags |= CODEC_FLAG_QSCALE;
3236         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3237     }
3238
3239     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3240     return ost;
3241 }
3242
3243 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3244 {
3245     int i;
3246     const char *p = str;
3247     for(i = 0;; i++) {
3248         dest[i] = atoi(p);
3249         if(i == 63)
3250             break;
3251         p = strchr(p, ',');
3252         if(!p) {
3253             fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3254             exit_program(1);
3255         }
3256         p++;
3257     }
3258 }
3259
3260 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3261 {
3262     AVStream *st;
3263     OutputStream *ost;
3264     AVCodecContext *video_enc;
3265
3266     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3267     st  = ost->st;
3268     video_enc = st->codec;
3269
3270     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3271         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3272     }
3273
3274     if (!st->stream_copy) {
3275         const char *p = NULL;
3276         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3277         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3278         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3279         int i, force_fps = 0, top_field_first = -1;
3280
3281         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3282         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3283             av_log(NULL, AV_LOG_ERROR, "Invalid framerate value: %s\n", frame_rate);
3284             exit_program(1);
3285         }
3286
3287         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3288         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3289             av_log(NULL, AV_LOG_ERROR, "Invalid frame size: %s.\n", frame_size);
3290             exit_program(1);
3291         }
3292
3293         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3294         if (frame_aspect_ratio)
3295             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3296
3297         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3298         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3299         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3300             av_log(NULL, AV_LOG_ERROR, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3301             exit_program(1);
3302         }
3303         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3304
3305         if (intra_only)
3306             video_enc->gop_size = 0;
3307         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3308         if (intra_matrix) {
3309             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3310                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for intra matrix.\n");
3311                 exit_program(1);
3312             }
3313             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3314         }
3315         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3316         if (inter_matrix) {
3317             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3318                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for inter matrix.\n");
3319                 exit_program(1);
3320             }
3321             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3322         }
3323
3324         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3325         for(i=0; p; i++){
3326             int start, end, q;
3327             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3328             if(e!=3){
3329                 fprintf(stderr, "error parsing rc_override\n");
3330                 exit_program(1);
3331             }
3332             video_enc->rc_override=
3333                 av_realloc(video_enc->rc_override,
3334                            sizeof(RcOverride)*(i+1));
3335             video_enc->rc_override[i].start_frame= start;
3336             video_enc->rc_override[i].end_frame  = end;
3337             if(q>0){
3338                 video_enc->rc_override[i].qscale= q;
3339                 video_enc->rc_override[i].quality_factor= 1.0;
3340             }
3341             else{
3342                 video_enc->rc_override[i].qscale= 0;
3343                 video_enc->rc_override[i].quality_factor= -q/100.0;
3344             }
3345             p= strchr(p, '/');
3346             if(p) p++;
3347         }
3348         video_enc->rc_override_count=i;
3349         if (!video_enc->rc_initial_buffer_occupancy)
3350             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3351         video_enc->intra_dc_precision= intra_dc_precision - 8;
3352
3353         /* two pass mode */
3354         if (do_pass) {
3355             if (do_pass == 1) {
3356                 video_enc->flags |= CODEC_FLAG_PASS1;
3357             } else {
3358                 video_enc->flags |= CODEC_FLAG_PASS2;
3359             }
3360         }
3361
3362         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3363         if (forced_key_frames)
3364             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3365
3366         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3367         ost->force_fps = force_fps;
3368
3369         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3370         ost->top_field_first = top_field_first;
3371
3372 #if CONFIG_AVFILTER
3373         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3374         if (filters)
3375             ost->avfilter = av_strdup(filters);
3376 #endif
3377     }
3378
3379     return ost;
3380 }
3381
3382 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3383 {
3384     AVStream *st;
3385     OutputStream *ost;
3386     AVCodecContext *audio_enc;
3387
3388     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3389     st  = ost->st;
3390
3391     audio_enc = st->codec;
3392     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3393
3394     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3395         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3396     }
3397     if (!st->stream_copy) {
3398         char *sample_fmt = NULL;
3399
3400         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3401
3402         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3403         if (sample_fmt &&
3404             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3405             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3406             exit_program(1);
3407         }
3408
3409         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3410     }
3411
3412     return ost;
3413 }
3414
3415 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3416 {
3417     AVStream *st;
3418     OutputStream *ost;
3419     AVCodecContext *data_enc;
3420
3421     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3422     st  = ost->st;
3423     data_enc = st->codec;
3424     if (!st->stream_copy) {
3425         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3426         exit_program(1);
3427     }
3428
3429     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3430         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3431     }
3432
3433     return ost;
3434 }
3435
3436 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3437 {
3438     AVStream *st;
3439     OutputStream *ost;
3440     AVCodecContext *subtitle_enc;
3441
3442     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3443     st  = ost->st;
3444     subtitle_enc = st->codec;
3445
3446     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3447
3448     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3449         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3450     }
3451
3452     return ost;
3453 }
3454
3455 /* arg format is "output-stream-index:streamid-value". */
3456 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3457 {
3458     int idx;
3459     char *p;
3460     char idx_str[16];
3461
3462     av_strlcpy(idx_str, arg, sizeof(idx_str));
3463     p = strchr(idx_str, ':');
3464     if (!p) {
3465         fprintf(stderr,
3466                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3467                 arg, opt);
3468         exit_program(1);
3469     }
3470     *p++ = '\0';
3471     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3472     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3473     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3474     return 0;
3475 }
3476
3477 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3478 {
3479     AVFormatContext *is = ifile->ctx;
3480     AVFormatContext *os = ofile->ctx;
3481     int i;
3482
3483     for (i = 0; i < is->nb_chapters; i++) {
3484         AVChapter *in_ch = is->chapters[i], *out_ch;
3485         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3486                                       AV_TIME_BASE_Q, in_ch->time_base);
3487         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3488                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3489
3490
3491         if (in_ch->end < ts_off)
3492             continue;
3493         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3494             break;
3495
3496         out_ch = av_mallocz(sizeof(AVChapter));
3497         if (!out_ch)
3498             return AVERROR(ENOMEM);
3499
3500         out_ch->id        = in_ch->id;
3501         out_ch->time_base = in_ch->time_base;
3502         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3503         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3504
3505         if (copy_metadata)
3506             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3507
3508         os->nb_chapters++;
3509         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3510         if (!os->chapters)
3511             return AVERROR(ENOMEM);
3512         os->chapters[os->nb_chapters - 1] = out_ch;
3513     }
3514     return 0;
3515 }
3516
3517 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3518 {
3519     int i, err;
3520     AVFormatContext *ic = NULL;
3521
3522     err = avformat_open_input(&ic, filename, NULL, NULL);
3523     if (err < 0)
3524         return err;
3525     /* copy stream format */
3526     for(i=0;i<ic->nb_streams;i++) {
3527         AVStream *st;
3528         OutputStream *ost;
3529         AVCodec *codec;
3530
3531         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3532         ost   = new_output_stream(o, s, codec->type);
3533         st    = ost->st;
3534
3535         // FIXME: a more elegant solution is needed
3536         memcpy(st, ic->streams[i], sizeof(AVStream));
3537         st->info = av_malloc(sizeof(*st->info));
3538         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3539         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3540
3541         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3542             choose_sample_fmt(st, codec);
3543         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3544             choose_pixel_fmt(st, codec);
3545     }
3546
3547     av_close_input_file(ic);
3548     return 0;
3549 }
3550
3551 static void opt_output_file(void *optctx, const char *filename)
3552 {
3553     OptionsContext *o = optctx;
3554     AVFormatContext *oc;
3555     int i, err;
3556     AVOutputFormat *file_oformat;
3557     OutputStream *ost;
3558     InputStream  *ist;
3559
3560     if (!strcmp(filename, "-"))
3561         filename = "pipe:";
3562
3563     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3564     if (!oc) {
3565         print_error(filename, err);
3566         exit_program(1);
3567     }
3568     file_oformat= oc->oformat;
3569
3570     if (!strcmp(file_oformat->name, "ffm") &&
3571         av_strstart(filename, "http:", NULL)) {
3572         /* special case for files sent to ffserver: we get the stream
3573            parameters from ffserver */
3574         int err = read_ffserver_streams(o, oc, filename);
3575         if (err < 0) {
3576             print_error(filename, err);
3577             exit_program(1);
3578         }
3579     } else if (!o->nb_stream_maps) {
3580         /* pick the "best" stream of each type */
3581 #define NEW_STREAM(type, index)\
3582         if (index >= 0) {\
3583             ost = new_ ## type ## _stream(o, oc);\
3584             ost->source_index = index;\
3585             ost->sync_ist     = &input_streams[index];\
3586             input_streams[index].discard = 0;\
3587         }
3588
3589         /* video: highest resolution */
3590         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3591             int area = 0, idx = -1;
3592             for (i = 0; i < nb_input_streams; i++) {
3593                 ist = &input_streams[i];
3594                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3595                     ist->st->codec->width * ist->st->codec->height > area) {
3596                     area = ist->st->codec->width * ist->st->codec->height;
3597                     idx = i;
3598                 }
3599             }
3600             NEW_STREAM(video, idx);
3601         }
3602
3603         /* audio: most channels */
3604         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3605             int channels = 0, idx = -1;
3606             for (i = 0; i < nb_input_streams; i++) {
3607                 ist = &input_streams[i];
3608                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3609                     ist->st->codec->channels > channels) {
3610                     channels = ist->st->codec->channels;
3611                     idx = i;
3612                 }
3613             }
3614             NEW_STREAM(audio, idx);
3615         }
3616
3617         /* subtitles: pick first */
3618         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3619             for (i = 0; i < nb_input_streams; i++)
3620                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3621                     NEW_STREAM(subtitle, i);
3622                     break;
3623                 }
3624         }
3625         /* do something with data? */
3626     } else {
3627         for (i = 0; i < o->nb_stream_maps; i++) {
3628             StreamMap *map = &o->stream_maps[i];
3629
3630             if (map->disabled)
3631                 continue;
3632
3633             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3634             switch (ist->st->codec->codec_type) {
3635             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3636             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3637             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3638             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3639             default:
3640          &