swr: bump minor version.
[ffmpeg.git] / avconv.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[] = "avconv";
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 qp_hist = 0;
120
121 static int file_overwrite = 0;
122 static int do_benchmark = 0;
123 static int do_hex_dump = 0;
124 static int do_pkt_dump = 0;
125 static int do_pass = 0;
126 static const char *pass_logfilename_prefix;
127 static int video_sync_method= -1;
128 static int audio_sync_method= 0;
129 static float audio_drift_threshold= 0.1;
130 static int copy_ts= 0;
131 static int copy_tb= 0;
132 static int opt_shortest = 0;
133 static char *vstats_filename;
134 static FILE *vstats_file;
135
136 static int audio_volume = 256;
137
138 static int exit_on_error = 0;
139 static int using_stdin = 0;
140 static int run_as_daemon  = 0;
141 static int q_pressed = 0;
142 static int64_t video_size = 0;
143 static int64_t audio_size = 0;
144 static int64_t extra_size = 0;
145 static int nb_frames_dup = 0;
146 static int nb_frames_drop = 0;
147 static int input_sync;
148
149 static float dts_delta_threshold = 10;
150
151 static int print_stats = 1;
152
153 static uint8_t *audio_buf;
154 static uint8_t *audio_out;
155 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
156
157 static void *samples;
158
159 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
160
161 typedef struct InputStream {
162     int file_index;
163     AVStream *st;
164     int discard;             /* true if stream data should be discarded */
165     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
166     AVCodec *dec;
167
168     int64_t       start;     /* time when read started */
169     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
170                                 is not defined */
171     int64_t       pts;       /* current pts */
172     double ts_scale;
173     int is_start;            /* is 1 at the start and after a discontinuity */
174     int showed_multi_packet_warning;
175     AVDictionary *opts;
176 } InputStream;
177
178 typedef struct InputFile {
179     AVFormatContext *ctx;
180     int eof_reached;      /* true if eof reached */
181     int ist_index;        /* index of first stream in ist_table */
182     int buffer_size;      /* current total buffer size */
183     int64_t ts_offset;
184     int nb_streams;       /* number of stream that avconv is aware of; may be different
185                              from ctx.nb_streams if new streams appear during av_read_frame() */
186     int rate_emu;
187 } InputFile;
188
189 typedef struct OutputStream {
190     int file_index;          /* file index */
191     int index;               /* stream index in the output file */
192     int source_index;        /* InputStream index */
193     AVStream *st;            /* stream in the output file */
194     int encoding_needed;     /* true if encoding needed for this stream */
195     int frame_number;
196     /* input pts and corresponding output pts
197        for A/V sync */
198     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
199     struct InputStream *sync_ist; /* input stream to sync against */
200     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
201     AVBitStreamFilterContext *bitstream_filters;
202     AVCodec *enc;
203     int64_t max_frames;
204
205     /* video only */
206     int video_resample;
207     AVFrame resample_frame;              /* temporary frame for image resampling */
208     struct SwsContext *img_resample_ctx; /* for image resampling */
209     int resample_height;
210     int resample_width;
211     int resample_pix_fmt;
212     AVRational frame_rate;
213     int force_fps;
214     int top_field_first;
215
216     float frame_aspect_ratio;
217
218     /* forced key frames */
219     int64_t *forced_kf_pts;
220     int forced_kf_count;
221     int forced_kf_index;
222
223     /* audio only */
224     int audio_resample;
225     ReSampleContext *resample; /* for audio resampling */
226     int resample_sample_fmt;
227     int resample_channels;
228     int resample_sample_rate;
229     int reformat_pair;
230     AVAudioConvert *reformat_ctx;
231     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
232     FILE *logfile;
233
234 #if CONFIG_AVFILTER
235     AVFilterContext *output_video_filter;
236     AVFilterContext *input_video_filter;
237     AVFilterBufferRef *picref;
238     char *avfilter;
239     AVFilterGraph *graph;
240 #endif
241
242     int64_t sws_flags;
243     AVDictionary *opts;
244     int is_past_recording_time;
245     int stream_copy;
246     const char *attachment_filename;
247     int copy_initial_nonkeyframes;
248 } OutputStream;
249
250 #if HAVE_TERMIOS_H
251
252 /* init terminal so that we can grab keys */
253 static struct termios oldtty;
254 #endif
255
256 typedef struct OutputFile {
257     AVFormatContext *ctx;
258     AVDictionary *opts;
259     int ost_index;       /* index of the first stream in output_streams */
260     int64_t recording_time; /* desired length of the resulting file in microseconds */
261     int64_t start_time;     /* start time in microseconds */
262     uint64_t limit_filesize;
263 } OutputFile;
264
265 static InputStream *input_streams = NULL;
266 static int         nb_input_streams = 0;
267 static InputFile   *input_files   = NULL;
268 static int         nb_input_files   = 0;
269
270 static OutputStream *output_streams = NULL;
271 static int        nb_output_streams = 0;
272 static OutputFile   *output_files   = NULL;
273 static int        nb_output_files   = 0;
274
275 typedef struct OptionsContext {
276     /* input/output options */
277     int64_t start_time;
278     const char *format;
279
280     SpecifierOpt *codec_names;
281     int        nb_codec_names;
282     SpecifierOpt *audio_channels;
283     int        nb_audio_channels;
284     SpecifierOpt *audio_sample_rate;
285     int        nb_audio_sample_rate;
286     SpecifierOpt *frame_rates;
287     int        nb_frame_rates;
288     SpecifierOpt *frame_sizes;
289     int        nb_frame_sizes;
290     SpecifierOpt *frame_pix_fmts;
291     int        nb_frame_pix_fmts;
292
293     /* input options */
294     int64_t input_ts_offset;
295     int rate_emu;
296
297     SpecifierOpt *ts_scale;
298     int        nb_ts_scale;
299     SpecifierOpt *dump_attachment;
300     int        nb_dump_attachment;
301
302     /* output options */
303     StreamMap *stream_maps;
304     int     nb_stream_maps;
305     /* first item specifies output metadata, second is input */
306     MetadataMap (*meta_data_maps)[2];
307     int nb_meta_data_maps;
308     int metadata_global_manual;
309     int metadata_streams_manual;
310     int metadata_chapters_manual;
311     const char **attachments;
312     int       nb_attachments;
313
314     int chapters_input_file;
315
316     int64_t recording_time;
317     uint64_t limit_filesize;
318     float mux_preload;
319     float mux_max_delay;
320
321     int video_disable;
322     int audio_disable;
323     int subtitle_disable;
324     int data_disable;
325
326     /* indexed by output file stream index */
327     int   *streamid_map;
328     int nb_streamid_map;
329
330     SpecifierOpt *metadata;
331     int        nb_metadata;
332     SpecifierOpt *max_frames;
333     int        nb_max_frames;
334     SpecifierOpt *bitstream_filters;
335     int        nb_bitstream_filters;
336     SpecifierOpt *codec_tags;
337     int        nb_codec_tags;
338     SpecifierOpt *sample_fmts;
339     int        nb_sample_fmts;
340     SpecifierOpt *qscale;
341     int        nb_qscale;
342     SpecifierOpt *forced_key_frames;
343     int        nb_forced_key_frames;
344     SpecifierOpt *force_fps;
345     int        nb_force_fps;
346     SpecifierOpt *frame_aspect_ratios;
347     int        nb_frame_aspect_ratios;
348     SpecifierOpt *rc_overrides;
349     int        nb_rc_overrides;
350     SpecifierOpt *intra_matrices;
351     int        nb_intra_matrices;
352     SpecifierOpt *inter_matrices;
353     int        nb_inter_matrices;
354     SpecifierOpt *top_field_first;
355     int        nb_top_field_first;
356     SpecifierOpt *presets;
357     int        nb_presets;
358     SpecifierOpt *copy_initial_nonkeyframes;
359     int        nb_copy_initial_nonkeyframes;
360 #if CONFIG_AVFILTER
361     SpecifierOpt *filters;
362     int        nb_filters;
363 #endif
364 } OptionsContext;
365
366 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
367 {\
368     int i, ret;\
369     for (i = 0; i < o->nb_ ## name; i++) {\
370         char *spec = o->name[i].specifier;\
371         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
372             outvar = o->name[i].u.type;\
373         else if (ret < 0)\
374             exit_program(1);\
375     }\
376 }
377
378 static void reset_options(OptionsContext *o)
379 {
380     const OptionDef *po = options;
381
382     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
383     while (po->name) {
384         void *dst = (uint8_t*)o + po->u.off;
385
386         if (po->flags & OPT_SPEC) {
387             SpecifierOpt **so = dst;
388             int i, *count = (int*)(so + 1);
389             for (i = 0; i < *count; i++) {
390                 av_freep(&(*so)[i].specifier);
391                 if (po->flags & OPT_STRING)
392                     av_freep(&(*so)[i].u.str);
393             }
394             av_freep(so);
395             *count = 0;
396         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
397             av_freep(dst);
398         po++;
399     }
400
401     av_freep(&o->stream_maps);
402     av_freep(&o->meta_data_maps);
403     av_freep(&o->streamid_map);
404
405     memset(o, 0, sizeof(*o));
406
407     o->mux_max_delay  = 0.7;
408     o->recording_time = INT64_MAX;
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                  (unsigned)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", (unsigned)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
522 sigterm_handler(int sig)
523 {
524     received_sigterm = sig;
525     q_pressed++;
526     term_exit();
527 }
528
529 static void term_init(void)
530 {
531 #if HAVE_TERMIOS_H
532     if(!run_as_daemon){
533     struct termios tty;
534
535     tcgetattr (0, &tty);
536     oldtty = tty;
537     atexit(term_exit);
538
539     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
540                           |INLCR|IGNCR|ICRNL|IXON);
541     tty.c_oflag |= OPOST;
542     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
543     tty.c_cflag &= ~(CSIZE|PARENB);
544     tty.c_cflag |= CS8;
545     tty.c_cc[VMIN] = 1;
546     tty.c_cc[VTIME] = 0;
547
548     tcsetattr (0, TCSANOW, &tty);
549     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
550     }
551 #endif
552
553     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
554     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
555 #ifdef SIGXCPU
556     signal(SIGXCPU, sigterm_handler);
557 #endif
558 }
559
560 /* read a key without blocking */
561 static int read_key(void)
562 {
563 #if HAVE_TERMIOS_H
564     int n = 1;
565     unsigned char ch;
566     struct timeval tv;
567     fd_set rfds;
568
569     if(run_as_daemon)
570         return -1;
571
572     FD_ZERO(&rfds);
573     FD_SET(0, &rfds);
574     tv.tv_sec = 0;
575     tv.tv_usec = 0;
576     n = select(1, &rfds, NULL, NULL, &tv);
577     if (n > 0) {
578         n = read(0, &ch, 1);
579         if (n == 1)
580             return ch;
581
582         return n;
583     }
584 #elif HAVE_KBHIT
585     if(kbhit())
586         return(getch());
587 #endif
588     return -1;
589 }
590
591 static int decode_interrupt_cb(void)
592 {
593     q_pressed += read_key() == 'q';
594     return q_pressed > 1;
595 }
596
597 void exit_program(int ret)
598 {
599     int i;
600
601     /* close files */
602     for(i=0;i<nb_output_files;i++) {
603         AVFormatContext *s = output_files[i].ctx;
604         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
605             avio_close(s->pb);
606         avformat_free_context(s);
607         av_dict_free(&output_files[i].opts);
608     }
609     for(i=0;i<nb_input_files;i++) {
610         av_close_input_file(input_files[i].ctx);
611     }
612     for (i = 0; i < nb_input_streams; i++)
613         av_dict_free(&input_streams[i].opts);
614
615     if (vstats_file)
616         fclose(vstats_file);
617     av_free(vstats_filename);
618
619     av_freep(&input_streams);
620     av_freep(&input_files);
621     av_freep(&output_streams);
622     av_freep(&output_files);
623
624     uninit_opts();
625     av_free(audio_buf);
626     av_free(audio_out);
627     allocated_audio_buf_size= allocated_audio_out_size= 0;
628     av_free(samples);
629
630 #if CONFIG_AVFILTER
631     avfilter_uninit();
632 #endif
633     avformat_network_deinit();
634
635     if (received_sigterm) {
636         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
637                (int) received_sigterm);
638         exit (255);
639     }
640
641     exit(ret); /* not all OS-es handle main() return value */
642 }
643
644 static void assert_avoptions(AVDictionary *m)
645 {
646     AVDictionaryEntry *t;
647     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
648         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
649         exit_program(1);
650     }
651 }
652
653 static void assert_codec_experimental(AVCodecContext *c, int encoder)
654 {
655     const char *codec_string = encoder ? "encoder" : "decoder";
656     AVCodec *codec;
657     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
658         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
659         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
660                 "results.\nAdd '-strict experimental' if you want to use it.\n",
661                 codec_string, c->codec->name);
662         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
663         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
664             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
665                    codec_string, codec->name);
666         exit_program(1);
667     }
668 }
669
670 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
671 {
672     if(codec && codec->sample_fmts){
673         const enum AVSampleFormat *p= codec->sample_fmts;
674         for(; *p!=-1; p++){
675             if(*p == st->codec->sample_fmt)
676                 break;
677         }
678         if (*p == -1) {
679             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
680                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
681             if(av_get_sample_fmt_name(st->codec->sample_fmt))
682             av_log(NULL, AV_LOG_WARNING,
683                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
684                    av_get_sample_fmt_name(st->codec->sample_fmt),
685                    codec->name,
686                    av_get_sample_fmt_name(codec->sample_fmts[0]));
687             st->codec->sample_fmt = codec->sample_fmts[0];
688         }
689     }
690 }
691
692 static void choose_sample_rate(AVStream *st, AVCodec *codec)
693 {
694     if(codec && codec->supported_samplerates){
695         const int *p= codec->supported_samplerates;
696         int best=0;
697         int best_dist=INT_MAX;
698         for(; *p; p++){
699             int dist= abs(st->codec->sample_rate - *p);
700             if(dist < best_dist){
701                 best_dist= dist;
702                 best= *p;
703             }
704         }
705         if(best_dist){
706             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
707         }
708         st->codec->sample_rate= best;
709     }
710 }
711
712 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
713 {
714     if(codec && codec->pix_fmts){
715         const enum PixelFormat *p= codec->pix_fmts;
716         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
717             if(st->codec->codec_id==CODEC_ID_MJPEG){
718                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
719             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
720                 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};
721             }
722         }
723         for(; *p!=-1; p++){
724             if(*p == st->codec->pix_fmt)
725                 break;
726         }
727         if (*p == -1) {
728             if(st->codec->pix_fmt != PIX_FMT_NONE)
729                 av_log(NULL, AV_LOG_WARNING,
730                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
731                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
732                         codec->name,
733                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
734             st->codec->pix_fmt = codec->pix_fmts[0];
735         }
736     }
737 }
738
739 static double
740 get_sync_ipts(const OutputStream *ost)
741 {
742     const InputStream *ist = ost->sync_ist;
743     OutputFile *of = &output_files[ost->file_index];
744     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
745 }
746
747 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
748     int ret;
749
750     while(bsfc){
751         AVPacket new_pkt= *pkt;
752         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
753                                           &new_pkt.data, &new_pkt.size,
754                                           pkt->data, pkt->size,
755                                           pkt->flags & AV_PKT_FLAG_KEY);
756         if(a>0){
757             av_free_packet(pkt);
758             new_pkt.destruct= av_destruct_packet;
759         } else if(a<0){
760             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
761                    bsfc->filter->name, pkt->stream_index,
762                    avctx->codec ? avctx->codec->name : "copy");
763             print_error("", a);
764             if (exit_on_error)
765                 exit_program(1);
766         }
767         *pkt= new_pkt;
768
769         bsfc= bsfc->next;
770     }
771
772     ret= av_interleaved_write_frame(s, pkt);
773     if(ret < 0){
774         print_error("av_interleaved_write_frame()", ret);
775         exit_program(1);
776     }
777 }
778
779 static void do_audio_out(AVFormatContext *s,
780                          OutputStream *ost,
781                          InputStream *ist,
782                          unsigned char *buf, int size)
783 {
784     uint8_t *buftmp;
785     int64_t audio_out_size, audio_buf_size;
786     int64_t allocated_for_size= size;
787
788     int size_out, frame_bytes, ret, resample_changed;
789     AVCodecContext *enc= ost->st->codec;
790     AVCodecContext *dec= ist->st->codec;
791     int osize = av_get_bytes_per_sample(enc->sample_fmt);
792     int isize = av_get_bytes_per_sample(dec->sample_fmt);
793     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
794
795 need_realloc:
796     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
797     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
798     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
799     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
800     audio_buf_size*= osize*enc->channels;
801
802     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
803     if(coded_bps > 8*osize)
804         audio_out_size= audio_out_size * coded_bps / (8*osize);
805     audio_out_size += FF_MIN_BUFFER_SIZE;
806
807     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
808         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
809         exit_program(1);
810     }
811
812     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
813     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
814     if (!audio_buf || !audio_out){
815         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
816         exit_program(1);
817     }
818
819     if (enc->channels != dec->channels)
820         ost->audio_resample = 1;
821
822     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
823                        ost->resample_channels    != dec->channels   ||
824                        ost->resample_sample_rate != dec->sample_rate;
825
826     if ((ost->audio_resample && !ost->resample) || resample_changed) {
827         if (resample_changed) {
828             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",
829                    ist->file_index, ist->st->index,
830                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
831                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
832             ost->resample_sample_fmt  = dec->sample_fmt;
833             ost->resample_channels    = dec->channels;
834             ost->resample_sample_rate = dec->sample_rate;
835             if (ost->resample)
836                 audio_resample_close(ost->resample);
837         }
838         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
839         if (audio_sync_method <= 1 &&
840             ost->resample_sample_fmt  == enc->sample_fmt &&
841             ost->resample_channels    == enc->channels   &&
842             ost->resample_sample_rate == enc->sample_rate) {
843             ost->resample = NULL;
844             ost->audio_resample = 0;
845         } else {
846             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
847                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
848             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
849                                                    enc->sample_rate, dec->sample_rate,
850                                                    enc->sample_fmt,  dec->sample_fmt,
851                                                    16, 10, 0, 0.8);
852             if (!ost->resample) {
853                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
854                        dec->channels, dec->sample_rate,
855                        enc->channels, enc->sample_rate);
856                 exit_program(1);
857             }
858         }
859     }
860
861 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
862     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
863         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
864         if (ost->reformat_ctx)
865             av_audio_convert_free(ost->reformat_ctx);
866         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
867                                                    dec->sample_fmt, 1, NULL, 0);
868         if (!ost->reformat_ctx) {
869             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
870                    av_get_sample_fmt_name(dec->sample_fmt),
871                    av_get_sample_fmt_name(enc->sample_fmt));
872             exit_program(1);
873         }
874         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
875     }
876
877     if(audio_sync_method){
878         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
879                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
880         double idelta= delta*dec->sample_rate / enc->sample_rate;
881         int byte_delta= ((int)idelta)*2*dec->channels;
882
883         //FIXME resample delay
884         if(fabs(delta) > 50){
885             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
886                 if(byte_delta < 0){
887                     byte_delta= FFMAX(byte_delta, -size);
888                     size += byte_delta;
889                     buf  -= byte_delta;
890                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
891                     if(!size)
892                         return;
893                     ist->is_start=0;
894                 }else{
895                     static uint8_t *input_tmp= NULL;
896                     input_tmp= av_realloc(input_tmp, byte_delta + size);
897
898                     if(byte_delta > allocated_for_size - size){
899                         allocated_for_size= byte_delta + (int64_t)size;
900                         goto need_realloc;
901                     }
902                     ist->is_start=0;
903
904                     memset(input_tmp, 0, byte_delta);
905                     memcpy(input_tmp + byte_delta, buf, size);
906                     buf= input_tmp;
907                     size += byte_delta;
908                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
909                 }
910             }else if(audio_sync_method>1){
911                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
912                 av_assert0(ost->audio_resample);
913                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
914                        delta, comp, enc->sample_rate);
915 //                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));
916                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
917             }
918         }
919     }else
920         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
921                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
922
923     if (ost->audio_resample) {
924         buftmp = audio_buf;
925         size_out = audio_resample(ost->resample,
926                                   (short *)buftmp, (short *)buf,
927                                   size / (dec->channels * isize));
928         size_out = size_out * enc->channels * osize;
929     } else {
930         buftmp = buf;
931         size_out = size;
932     }
933
934     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
935         const void *ibuf[6]= {buftmp};
936         void *obuf[6]= {audio_buf};
937         int istride[6]= {isize};
938         int ostride[6]= {osize};
939         int len= size_out/istride[0];
940         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
941             printf("av_audio_convert() failed\n");
942             if (exit_on_error)
943                 exit_program(1);
944             return;
945         }
946         buftmp = audio_buf;
947         size_out = len*osize;
948     }
949
950     /* now encode as many frames as possible */
951     if (enc->frame_size > 1) {
952         /* output resampled raw samples */
953         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
954             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
955             exit_program(1);
956         }
957         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
958
959         frame_bytes = enc->frame_size * osize * enc->channels;
960
961         while (av_fifo_size(ost->fifo) >= frame_bytes) {
962             AVPacket pkt;
963             av_init_packet(&pkt);
964
965             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
966
967             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
968
969             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
970                                        (short *)audio_buf);
971             if (ret < 0) {
972                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
973                 exit_program(1);
974             }
975             audio_size += ret;
976             pkt.stream_index= ost->index;
977             pkt.data= audio_out;
978             pkt.size= ret;
979             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
980                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
981             pkt.flags |= AV_PKT_FLAG_KEY;
982             write_frame(s, &pkt, enc, ost->bitstream_filters);
983
984             ost->sync_opts += enc->frame_size;
985         }
986     } else {
987         AVPacket pkt;
988         av_init_packet(&pkt);
989
990         ost->sync_opts += size_out / (osize * enc->channels);
991
992         /* output a pcm frame */
993         /* determine the size of the coded buffer */
994         size_out /= osize;
995         if (coded_bps)
996             size_out = size_out*coded_bps/8;
997
998         if(size_out > audio_out_size){
999             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1000             exit_program(1);
1001         }
1002
1003         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1004         ret = avcodec_encode_audio(enc, audio_out, size_out,
1005                                    (short *)buftmp);
1006         if (ret < 0) {
1007             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1008             exit_program(1);
1009         }
1010         audio_size += ret;
1011         pkt.stream_index= ost->index;
1012         pkt.data= audio_out;
1013         pkt.size= ret;
1014         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1015             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1016         pkt.flags |= AV_PKT_FLAG_KEY;
1017         write_frame(s, &pkt, enc, ost->bitstream_filters);
1018     }
1019 }
1020
1021 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1022 {
1023     AVCodecContext *dec;
1024     AVPicture *picture2;
1025     AVPicture picture_tmp;
1026     uint8_t *buf = 0;
1027
1028     dec = ist->st->codec;
1029
1030     /* deinterlace : must be done before any resize */
1031     if (do_deinterlace) {
1032         int size;
1033
1034         /* create temporary picture */
1035         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1036         buf = av_malloc(size);
1037         if (!buf)
1038             return;
1039
1040         picture2 = &picture_tmp;
1041         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1042
1043         if(avpicture_deinterlace(picture2, picture,
1044                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1045             /* if error, do not deinterlace */
1046             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1047             av_free(buf);
1048             buf = NULL;
1049             picture2 = picture;
1050         }
1051     } else {
1052         picture2 = picture;
1053     }
1054
1055     if (picture != picture2)
1056         *picture = *picture2;
1057     *bufp = buf;
1058 }
1059
1060 static void do_subtitle_out(AVFormatContext *s,
1061                             OutputStream *ost,
1062                             InputStream *ist,
1063                             AVSubtitle *sub,
1064                             int64_t pts)
1065 {
1066     static uint8_t *subtitle_out = NULL;
1067     int subtitle_out_max_size = 1024 * 1024;
1068     int subtitle_out_size, nb, i;
1069     AVCodecContext *enc;
1070     AVPacket pkt;
1071
1072     if (pts == AV_NOPTS_VALUE) {
1073         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1074         if (exit_on_error)
1075             exit_program(1);
1076         return;
1077     }
1078
1079     enc = ost->st->codec;
1080
1081     if (!subtitle_out) {
1082         subtitle_out = av_malloc(subtitle_out_max_size);
1083     }
1084
1085     /* Note: DVB subtitle need one packet to draw them and one other
1086        packet to clear them */
1087     /* XXX: signal it in the codec context ? */
1088     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1089         nb = 2;
1090     else
1091         nb = 1;
1092
1093     for(i = 0; i < nb; i++) {
1094         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1095         // start_display_time is required to be 0
1096         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1097         sub->end_display_time -= sub->start_display_time;
1098         sub->start_display_time = 0;
1099         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1100                                                     subtitle_out_max_size, sub);
1101         if (subtitle_out_size < 0) {
1102             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1103             exit_program(1);
1104         }
1105
1106         av_init_packet(&pkt);
1107         pkt.stream_index = ost->index;
1108         pkt.data = subtitle_out;
1109         pkt.size = subtitle_out_size;
1110         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1111         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1112             /* XXX: the pts correction is handled here. Maybe handling
1113                it in the codec would be better */
1114             if (i == 0)
1115                 pkt.pts += 90 * sub->start_display_time;
1116             else
1117                 pkt.pts += 90 * sub->end_display_time;
1118         }
1119         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1120     }
1121 }
1122
1123 static int bit_buffer_size= 1024*256;
1124 static uint8_t *bit_buffer= NULL;
1125
1126 static void do_video_resample(OutputStream *ost,
1127                               InputStream *ist,
1128                               AVFrame *in_picture,
1129                               AVFrame **out_picture)
1130 {
1131     int resample_changed = 0;
1132     AVCodecContext *dec = ist->st->codec;
1133     AVCodecContext *enc = ost->st->codec;
1134     *out_picture = in_picture;
1135
1136     resample_changed = ost->resample_width   != dec->width  ||
1137                        ost->resample_height  != dec->height ||
1138                        ost->resample_pix_fmt != dec->pix_fmt;
1139
1140 #if !CONFIG_AVFILTER
1141     if (resample_changed) {
1142         av_log(NULL, AV_LOG_INFO,
1143                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1144                ist->file_index, ist->st->index,
1145                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1146                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1147         ost->resample_width   = dec->width;
1148         ost->resample_height  = dec->height;
1149         ost->resample_pix_fmt = dec->pix_fmt;
1150     }
1151
1152     ost->video_resample = dec->width   != enc->width  ||
1153                           dec->height  != enc->height ||
1154                           dec->pix_fmt != enc->pix_fmt;
1155
1156     if (ost->video_resample) {
1157         *out_picture = &ost->resample_frame;
1158         if (!ost->img_resample_ctx || resample_changed) {
1159             /* initialize the destination picture */
1160             if (!ost->resample_frame.data[0]) {
1161                 avcodec_get_frame_defaults(&ost->resample_frame);
1162                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1163                                     enc->width, enc->height)) {
1164                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1165                     exit_program(1);
1166                 }
1167             }
1168             /* initialize a new scaler context */
1169             sws_freeContext(ost->img_resample_ctx);
1170             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1171                                                    enc->width, enc->height, enc->pix_fmt,
1172                                                    ost->sws_flags, NULL, NULL, NULL);
1173             if (ost->img_resample_ctx == NULL) {
1174                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1175                 exit_program(1);
1176             }
1177         }
1178         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1179               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1180     }
1181 #else
1182     if (resample_changed) {
1183         avfilter_graph_free(&ost->graph);
1184         if (configure_video_filters(ist, ost)) {
1185             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1186             exit_program(1);
1187         }
1188     }
1189 #endif
1190     if (resample_changed) {
1191         ost->resample_width   = dec->width;
1192         ost->resample_height  = dec->height;
1193         ost->resample_pix_fmt = dec->pix_fmt;
1194     }
1195 }
1196
1197
1198 static void do_video_out(AVFormatContext *s,
1199                          OutputStream *ost,
1200                          InputStream *ist,
1201                          AVFrame *in_picture,
1202                          int *frame_size, float quality)
1203 {
1204     int nb_frames, i, ret, format_video_sync;
1205     AVFrame *final_picture;
1206     AVCodecContext *enc;
1207     double sync_ipts;
1208
1209     enc = ost->st->codec;
1210
1211     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1212
1213     /* by default, we output a single frame */
1214     nb_frames = 1;
1215
1216     *frame_size = 0;
1217
1218     format_video_sync = video_sync_method;
1219     if (format_video_sync < 0)
1220         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1221
1222     if (format_video_sync) {
1223         double vdelta = sync_ipts - ost->sync_opts;
1224         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1225         if (vdelta < -1.1)
1226             nb_frames = 0;
1227         else if (format_video_sync == 2) {
1228             if(vdelta<=-0.6){
1229                 nb_frames=0;
1230             }else if(vdelta>0.6)
1231                 ost->sync_opts= lrintf(sync_ipts);
1232         }else if (vdelta > 1.1)
1233             nb_frames = lrintf(vdelta);
1234 //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);
1235         if (nb_frames == 0){
1236             ++nb_frames_drop;
1237             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1238         }else if (nb_frames > 1) {
1239             nb_frames_dup += nb_frames - 1;
1240             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1241         }
1242     }else
1243         ost->sync_opts= lrintf(sync_ipts);
1244
1245     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1246     if (nb_frames <= 0)
1247         return;
1248
1249     do_video_resample(ost, ist, in_picture, &final_picture);
1250
1251     /* duplicates frame if needed */
1252     for(i=0;i<nb_frames;i++) {
1253         AVPacket pkt;
1254         av_init_packet(&pkt);
1255         pkt.stream_index= ost->index;
1256
1257         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1258             /* raw pictures are written as AVPicture structure to
1259                avoid any copies. We support temporarily the older
1260                method. */
1261             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1262             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1263             pkt.data= (uint8_t *)final_picture;
1264             pkt.size=  sizeof(AVPicture);
1265             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1266             pkt.flags |= AV_PKT_FLAG_KEY;
1267
1268             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1269         } else {
1270             AVFrame big_picture;
1271
1272             big_picture= *final_picture;
1273             /* better than nothing: use input picture interlaced
1274                settings */
1275             big_picture.interlaced_frame = in_picture->interlaced_frame;
1276             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1277                 if (ost->top_field_first == -1)
1278                     big_picture.top_field_first = in_picture->top_field_first;
1279                 else
1280                     big_picture.top_field_first = !!ost->top_field_first;
1281             }
1282
1283             /* handles same_quant here. This is not correct because it may
1284                not be a global option */
1285             big_picture.quality = quality;
1286             if (!enc->me_threshold)
1287                 big_picture.pict_type = 0;
1288 //            big_picture.pts = AV_NOPTS_VALUE;
1289             big_picture.pts= ost->sync_opts;
1290 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1291 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1292             if (ost->forced_kf_index < ost->forced_kf_count &&
1293                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1294                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1295                 ost->forced_kf_index++;
1296             }
1297             ret = avcodec_encode_video(enc,
1298                                        bit_buffer, bit_buffer_size,
1299                                        &big_picture);
1300             if (ret < 0) {
1301                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1302                 exit_program(1);
1303             }
1304
1305             if(ret>0){
1306                 pkt.data= bit_buffer;
1307                 pkt.size= ret;
1308                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1309                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1310 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1311    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1312    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1313
1314                 if(enc->coded_frame->key_frame)
1315                     pkt.flags |= AV_PKT_FLAG_KEY;
1316                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1317                 *frame_size = ret;
1318                 video_size += ret;
1319                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1320                 //        enc->frame_number-1, ret, enc->pict_type);
1321                 /* if two pass, output log */
1322                 if (ost->logfile && enc->stats_out) {
1323                     fprintf(ost->logfile, "%s", enc->stats_out);
1324                 }
1325             }
1326         }
1327         ost->sync_opts++;
1328         ost->frame_number++;
1329     }
1330 }
1331
1332 static double psnr(double d){
1333     return -10.0*log(d)/log(10.0);
1334 }
1335
1336 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1337                            int frame_size)
1338 {
1339     AVCodecContext *enc;
1340     int frame_number;
1341     double ti1, bitrate, avg_bitrate;
1342
1343     /* this is executed just the first time do_video_stats is called */
1344     if (!vstats_file) {
1345         vstats_file = fopen(vstats_filename, "w");
1346         if (!vstats_file) {
1347             perror("fopen");
1348             exit_program(1);
1349         }
1350     }
1351
1352     enc = ost->st->codec;
1353     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1354         frame_number = ost->frame_number;
1355         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1356         if (enc->flags&CODEC_FLAG_PSNR)
1357             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1358
1359         fprintf(vstats_file,"f_size= %6d ", frame_size);
1360         /* compute pts value */
1361         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1362         if (ti1 < 0.01)
1363             ti1 = 0.01;
1364
1365         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1366         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1367         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1368             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1369         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1370     }
1371 }
1372
1373 static void print_report(OutputFile *output_files,
1374                          OutputStream *ost_table, int nb_ostreams,
1375                          int is_last_report, int64_t timer_start)
1376 {
1377     char buf[1024];
1378     OutputStream *ost;
1379     AVFormatContext *oc;
1380     int64_t total_size;
1381     AVCodecContext *enc;
1382     int frame_number, vid, i;
1383     double bitrate;
1384     int64_t pts = INT64_MAX;
1385     static int64_t last_time = -1;
1386     static int qp_histogram[52];
1387     int hours, mins, secs, us;
1388
1389     if (!print_stats && !is_last_report)
1390         return;
1391
1392     if (!is_last_report) {
1393         int64_t cur_time;
1394         /* display the report every 0.5 seconds */
1395         cur_time = av_gettime();
1396         if (last_time == -1) {
1397             last_time = cur_time;
1398             return;
1399         }
1400         if ((cur_time - last_time) < 500000)
1401             return;
1402         last_time = cur_time;
1403     }
1404
1405
1406     oc = output_files[0].ctx;
1407
1408     total_size = avio_size(oc->pb);
1409     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1410         total_size= avio_tell(oc->pb);
1411
1412     buf[0] = '\0';
1413     vid = 0;
1414     for(i=0;i<nb_ostreams;i++) {
1415         float q = -1;
1416         ost = &ost_table[i];
1417         enc = ost->st->codec;
1418         if (!ost->stream_copy && enc->coded_frame)
1419             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1420         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1421             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1422         }
1423         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1424             float t = (av_gettime()-timer_start) / 1000000.0;
1425
1426             frame_number = ost->frame_number;
1427             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1428                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1429             if(is_last_report)
1430                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1431             if(qp_hist){
1432                 int j;
1433                 int qp = lrintf(q);
1434                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1435                     qp_histogram[qp]++;
1436                 for(j=0; j<32; j++)
1437                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1438             }
1439             if (enc->flags&CODEC_FLAG_PSNR){
1440                 int j;
1441                 double error, error_sum=0;
1442                 double scale, scale_sum=0;
1443                 char type[3]= {'Y','U','V'};
1444                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1445                 for(j=0; j<3; j++){
1446                     if(is_last_report){
1447                         error= enc->error[j];
1448                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1449                     }else{
1450                         error= enc->coded_frame->error[j];
1451                         scale= enc->width*enc->height*255.0*255.0;
1452                     }
1453                     if(j) scale/=4;
1454                     error_sum += error;
1455                     scale_sum += scale;
1456                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1457                 }
1458                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1459             }
1460             vid = 1;
1461         }
1462         /* compute min output value */
1463         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1464                                       ost->st->time_base, AV_TIME_BASE_Q));
1465     }
1466
1467     secs = pts / AV_TIME_BASE;
1468     us = pts % AV_TIME_BASE;
1469     mins = secs / 60;
1470     secs %= 60;
1471     hours = mins / 60;
1472     mins %= 60;
1473
1474     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1475
1476     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1477              "size=%8.0fkB time=", total_size / 1024.0);
1478     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1479              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1480              (100 * us) / AV_TIME_BASE);
1481     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1482              "bitrate=%6.1fkbits/s", bitrate);
1483
1484     if (nb_frames_dup || nb_frames_drop)
1485         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1486                 nb_frames_dup, nb_frames_drop);
1487
1488     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1489
1490     fflush(stderr);
1491
1492     if (is_last_report) {
1493         int64_t raw= audio_size + video_size + extra_size;
1494         av_log(NULL, AV_LOG_INFO, "\n");
1495         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1496                video_size/1024.0,
1497                audio_size/1024.0,
1498                extra_size/1024.0,
1499                100.0*(total_size - raw)/raw
1500         );
1501     }
1502 }
1503
1504 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1505 {
1506     int fill_char = 0x00;
1507     if (sample_fmt == AV_SAMPLE_FMT_U8)
1508         fill_char = 0x80;
1509     memset(buf, fill_char, size);
1510 }
1511
1512 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1513 {
1514     int i, ret;
1515
1516     for (i = 0; i < nb_ostreams; i++) {
1517         OutputStream   *ost = &ost_table[i];
1518         AVCodecContext *enc = ost->st->codec;
1519         AVFormatContext *os = output_files[ost->file_index].ctx;
1520
1521         if (!ost->encoding_needed)
1522             continue;
1523
1524         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1525             continue;
1526         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1527             continue;
1528
1529         for(;;) {
1530             AVPacket pkt;
1531             int fifo_bytes;
1532             av_init_packet(&pkt);
1533             pkt.stream_index= ost->index;
1534
1535             switch (ost->st->codec->codec_type) {
1536             case AVMEDIA_TYPE_AUDIO:
1537                 fifo_bytes = av_fifo_size(ost->fifo);
1538                 ret = 0;
1539                 /* encode any samples remaining in fifo */
1540                 if (fifo_bytes > 0) {
1541                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1542                     int fs_tmp = enc->frame_size;
1543
1544                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1545                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1546                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1547                     } else { /* pad */
1548                         int frame_bytes = enc->frame_size*osize*enc->channels;
1549                         if (allocated_audio_buf_size < frame_bytes)
1550                             exit_program(1);
1551                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1552                     }
1553
1554                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1555                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1556                                               ost->st->time_base.num, enc->sample_rate);
1557                     enc->frame_size = fs_tmp;
1558                 }
1559                 if (ret <= 0) {
1560                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1561                 }
1562                 if (ret < 0) {
1563                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1564                     exit_program(1);
1565                 }
1566                 audio_size += ret;
1567                 pkt.flags |= AV_PKT_FLAG_KEY;
1568                 break;
1569             case AVMEDIA_TYPE_VIDEO:
1570                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1571                 if (ret < 0) {
1572                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1573                     exit_program(1);
1574                 }
1575                 video_size += ret;
1576                 if(enc->coded_frame && enc->coded_frame->key_frame)
1577                     pkt.flags |= AV_PKT_FLAG_KEY;
1578                 if (ost->logfile && enc->stats_out) {
1579                     fprintf(ost->logfile, "%s", enc->stats_out);
1580                 }
1581                 break;
1582             default:
1583                 ret=-1;
1584             }
1585
1586             if (ret <= 0)
1587                 break;
1588             pkt.data = bit_buffer;
1589             pkt.size = ret;
1590             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1591                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1592             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1593         }
1594     }
1595 }
1596
1597 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1598 static int output_packet(InputStream *ist, int ist_index,
1599                          OutputStream *ost_table, int nb_ostreams,
1600                          const AVPacket *pkt)
1601 {
1602     AVFormatContext *os;
1603     OutputStream *ost;
1604     int ret = 0, i;
1605     int got_output;
1606     void *buffer_to_free = NULL;
1607     static unsigned int samples_size= 0;
1608     AVSubtitle subtitle, *subtitle_to_free;
1609     int64_t pkt_pts = AV_NOPTS_VALUE;
1610 #if CONFIG_AVFILTER
1611     int frame_available;
1612 #endif
1613     float quality;
1614
1615     AVPacket avpkt;
1616     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1617
1618     if(ist->next_pts == AV_NOPTS_VALUE)
1619         ist->next_pts= ist->pts;
1620
1621     if (pkt == NULL) {
1622         /* EOF handling */
1623         av_init_packet(&avpkt);
1624         avpkt.data = NULL;
1625         avpkt.size = 0;
1626         goto handle_eof;
1627     } else {
1628         avpkt = *pkt;
1629     }
1630
1631     if(pkt->dts != AV_NOPTS_VALUE)
1632         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1633     if(pkt->pts != AV_NOPTS_VALUE)
1634         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1635
1636     //while we have more to decode or while the decoder did output something on EOF
1637     while (avpkt.size > 0 || (!pkt && got_output)) {
1638         uint8_t *data_buf, *decoded_data_buf;
1639         int data_size, decoded_data_size;
1640         AVFrame *decoded_frame, *filtered_frame;
1641     handle_eof:
1642         ist->pts= ist->next_pts;
1643
1644         if(avpkt.size && avpkt.size != pkt->size)
1645             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1646                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1647             ist->showed_multi_packet_warning=1;
1648
1649         /* decode the packet if needed */
1650         decoded_frame    = filtered_frame = NULL;
1651         decoded_data_buf = NULL; /* fail safe */
1652         decoded_data_size= 0;
1653         data_buf  = avpkt.data;
1654         data_size = avpkt.size;
1655         subtitle_to_free = NULL;
1656         if (ist->decoding_needed) {
1657             switch(ist->st->codec->codec_type) {
1658             case AVMEDIA_TYPE_AUDIO:{
1659                 if(pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1660                     samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1661                     av_free(samples);
1662                     samples= av_malloc(samples_size);
1663                 }
1664                 decoded_data_size= samples_size;
1665                     /* XXX: could avoid copy if PCM 16 bits with same
1666                        endianness as CPU */
1667                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1668                                             &avpkt);
1669                 if (ret < 0)
1670                     return ret;
1671                 avpkt.data += ret;
1672                 avpkt.size -= ret;
1673                 data_size   = ret;
1674                 got_output  = decoded_data_size > 0;
1675                 /* Some bug in mpeg audio decoder gives */
1676                 /* decoded_data_size < 0, it seems they are overflows */
1677                 if (!got_output) {
1678                     /* no audio frame */
1679                     continue;
1680                 }
1681                 decoded_data_buf = (uint8_t *)samples;
1682                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1683                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1684                 break;}
1685             case AVMEDIA_TYPE_VIDEO:
1686                     if (!(decoded_frame = avcodec_alloc_frame()))
1687                         return AVERROR(ENOMEM);
1688                     avpkt.pts = pkt_pts;
1689                     avpkt.dts = ist->pts;
1690                     pkt_pts = AV_NOPTS_VALUE;
1691
1692                     ret = avcodec_decode_video2(ist->st->codec,
1693                                                 decoded_frame, &got_output, &avpkt);
1694                     quality = same_quant ? decoded_frame->quality : 0;
1695                     if (ret < 0)
1696                         goto fail;
1697                     if (!got_output) {
1698                         /* no picture yet */
1699                         av_freep(&decoded_frame);
1700                         goto discard_packet;
1701                     }
1702                     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1703                     if (ist->st->codec->time_base.num != 0) {
1704                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1705                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1706                                           ist->st->codec->time_base.num * ticks) /
1707                             ist->st->codec->time_base.den;
1708                     }
1709                     avpkt.size = 0;
1710                     buffer_to_free = NULL;
1711                     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1712                     break;
1713             case AVMEDIA_TYPE_SUBTITLE:
1714                 ret = avcodec_decode_subtitle2(ist->st->codec,
1715                                                &subtitle, &got_output, &avpkt);
1716                 if (ret < 0)
1717                     return ret;
1718                 if (!got_output) {
1719                     goto discard_packet;
1720                 }
1721                 subtitle_to_free = &subtitle;
1722                 avpkt.size = 0;
1723                 break;
1724             default:
1725                 return -1;
1726             }
1727         } else {
1728             switch(ist->st->codec->codec_type) {
1729             case AVMEDIA_TYPE_AUDIO:
1730                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1731                     ist->st->codec->sample_rate;
1732                 break;
1733             case AVMEDIA_TYPE_VIDEO:
1734                 if (ist->st->codec->time_base.num != 0) {
1735                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1736                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1737                                       ist->st->codec->time_base.num * ticks) /
1738                         ist->st->codec->time_base.den;
1739                 }
1740                 break;
1741             }
1742             avpkt.size = 0;
1743         }
1744
1745         // preprocess audio (volume)
1746         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1747             if (audio_volume != 256) {
1748                 switch (ist->st->codec->sample_fmt) {
1749                 case AV_SAMPLE_FMT_U8:
1750                 {
1751                     uint8_t *volp = samples;
1752                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1753                         int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1754                         *volp++ = av_clip_uint8(v);
1755                     }
1756                     break;
1757                 }
1758                 case AV_SAMPLE_FMT_S16:
1759                 {
1760                     int16_t *volp = samples;
1761                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1762                         int v = ((*volp) * audio_volume + 128) >> 8;
1763                         *volp++ = av_clip_int16(v);
1764                     }
1765                     break;
1766                 }
1767                 case AV_SAMPLE_FMT_S32:
1768                 {
1769                     int32_t *volp = samples;
1770                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1771                         int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1772                         *volp++ = av_clipl_int32(v);
1773                     }
1774                     break;
1775                 }
1776                 case AV_SAMPLE_FMT_FLT:
1777                 {
1778                     float *volp = samples;
1779                     float scale = audio_volume / 256.f;
1780                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1781                         *volp++ *= scale;
1782                     }
1783                     break;
1784                 }
1785                 case AV_SAMPLE_FMT_DBL:
1786                 {
1787                     double *volp = samples;
1788                     double scale = audio_volume / 256.;
1789                     for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1790                         *volp++ *= scale;
1791                     }
1792                     break;
1793                 }
1794                 default:
1795                     av_log(NULL, AV_LOG_FATAL,
1796                            "Audio volume adjustment on sample format %s is not supported.\n",
1797                            av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1798                     exit_program(1);
1799                 }
1800             }
1801         }
1802
1803         /* frame rate emulation */
1804         if (input_files[ist->file_index].rate_emu) {
1805             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1806             int64_t now = av_gettime() - ist->start;
1807             if (pts > now)
1808                 usleep(pts - now);
1809         }
1810         /* if output time reached then transcode raw format,
1811            encode packets and output them */
1812         for (i = 0; i < nb_ostreams; i++) {
1813             OutputFile *of = &output_files[ost_table[i].file_index];
1814             int frame_size;
1815
1816             ost = &ost_table[i];
1817             if (ost->source_index != ist_index)
1818                 continue;
1819
1820             if (of->start_time && ist->pts < of->start_time)
1821                 continue;
1822
1823             if (of->recording_time != INT64_MAX &&
1824                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1825                               (AVRational){1, 1000000}) >= 0) {
1826                 ost->is_past_recording_time = 1;
1827                 continue;
1828             }
1829
1830 #if CONFIG_AVFILTER
1831             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1832                 ost->input_video_filter) {
1833                 if (!decoded_frame->sample_aspect_ratio.num)
1834                     decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1835                 decoded_frame->pts = ist->pts;
1836
1837                 av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1838                 if (!(filtered_frame = avcodec_alloc_frame())) {
1839                     ret = AVERROR(ENOMEM);
1840                     goto fail;
1841                 }
1842             }
1843             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1844                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1845             while (frame_available) {
1846                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1847                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1848                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1849                         goto cont;
1850                     if (ost->picref) {
1851                         avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1852                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1853                     }
1854                 }
1855 #else
1856                 filtered_frame = decoded_frame;
1857 #endif
1858                 os = output_files[ost->file_index].ctx;
1859
1860                 /* set the input output pts pairs */
1861                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1862
1863                 if (ost->encoding_needed) {
1864                     av_assert0(ist->decoding_needed);
1865                     switch(ost->st->codec->codec_type) {
1866                     case AVMEDIA_TYPE_AUDIO:
1867                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1868                         break;
1869                     case AVMEDIA_TYPE_VIDEO:
1870 #if CONFIG_AVFILTER
1871                         if (ost->picref->video && !ost->frame_aspect_ratio)
1872                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1873 #endif
1874                         do_video_out(os, ost, ist, filtered_frame, &frame_size,
1875                                      same_quant ? quality : ost->st->codec->global_quality);
1876                         if (vstats_filename && frame_size)
1877                             do_video_stats(os, ost, frame_size);
1878                         break;
1879                     case AVMEDIA_TYPE_SUBTITLE:
1880                         do_subtitle_out(os, ost, ist, &subtitle,
1881                                         pkt->pts);
1882                         break;
1883                     default:
1884                         abort();
1885                     }
1886                 } else {
1887                     AVPicture pict;
1888                     AVPacket opkt;
1889                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1890                     av_init_packet(&opkt);
1891
1892                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1893                         !ost->copy_initial_nonkeyframes)
1894 #if !CONFIG_AVFILTER
1895                         continue;
1896 #else
1897                         goto cont;
1898 #endif
1899
1900                     /* no reencoding needed : output the packet directly */
1901                     /* force the input stream PTS */
1902
1903                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1904                         audio_size += data_size;
1905                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1906                         video_size += data_size;
1907                         ost->sync_opts++;
1908                     }
1909
1910                     opkt.stream_index= ost->index;
1911                     if(pkt->pts != AV_NOPTS_VALUE)
1912                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1913                     else
1914                         opkt.pts= AV_NOPTS_VALUE;
1915
1916                     if (pkt->dts == AV_NOPTS_VALUE)
1917                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1918                     else
1919                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1920                     opkt.dts -= ost_tb_start_time;
1921
1922                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1923                     opkt.flags= pkt->flags;
1924
1925                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1926                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1927                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1928                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1929                        ) {
1930                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1931                             opkt.destruct= av_destruct_packet;
1932                     } else {
1933                         opkt.data = data_buf;
1934                         opkt.size = data_size;
1935                     }
1936
1937                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1938                         /* store AVPicture in AVPacket, as expected by the output format */
1939                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1940                         opkt.data = (uint8_t *)&pict;
1941                         opkt.size = sizeof(AVPicture);
1942                         opkt.flags |= AV_PKT_FLAG_KEY;
1943                     }
1944                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1945                     ost->st->codec->frame_number++;
1946                     ost->frame_number++;
1947                     av_free_packet(&opkt);
1948                 }
1949 #if CONFIG_AVFILTER
1950                 cont:
1951                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1952                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1953                 if (ost->picref)
1954                     avfilter_unref_buffer(ost->picref);
1955             }
1956             av_freep(&filtered_frame);
1957 #endif
1958             }
1959
1960 fail:
1961         av_free(buffer_to_free);
1962         /* XXX: allocate the subtitles in the codec ? */
1963         if (subtitle_to_free) {
1964             avsubtitle_free(subtitle_to_free);
1965             subtitle_to_free = NULL;
1966         }
1967         av_freep(&decoded_frame);
1968         if (ret < 0)
1969             return ret;
1970     }
1971  discard_packet:
1972
1973     return 0;
1974 }
1975
1976 static void print_sdp(OutputFile *output_files, int n)
1977 {
1978     char sdp[2048];
1979     int i;
1980     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1981
1982     if (!avc)
1983         exit_program(1);
1984     for (i = 0; i < n; i++)
1985         avc[i] = output_files[i].ctx;
1986
1987     av_sdp_create(avc, n, sdp, sizeof(sdp));
1988     printf("SDP:\n%s\n", sdp);
1989     fflush(stdout);
1990     av_freep(&avc);
1991 }
1992
1993 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1994                              char *error, int error_len)
1995 {
1996     int i;
1997     InputStream *ist = &input_streams[ist_index];
1998     if (ist->decoding_needed) {
1999         AVCodec *codec = ist->dec;
2000         if (!codec) {
2001             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2002                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
2003             return AVERROR(EINVAL);
2004         }
2005
2006         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2007             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2008                     ist->file_index, ist->st->index);
2009             return AVERROR(EINVAL);
2010         }
2011         assert_codec_experimental(ist->st->codec, 0);
2012         assert_avoptions(ist->opts);
2013     }
2014
2015     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;
2016     ist->next_pts = AV_NOPTS_VALUE;
2017     ist->is_start = 1;
2018
2019     return 0;
2020 }
2021
2022 static int transcode_init(OutputFile *output_files,
2023                           int nb_output_files,
2024                           InputFile *input_files,
2025                           int nb_input_files)
2026 {
2027     int ret = 0, i, j, k;
2028     AVFormatContext *os;
2029     AVCodecContext *codec, *icodec;
2030     OutputStream *ost;
2031     InputStream *ist;
2032     char error[1024];
2033     int want_sdp = 1;
2034
2035     /* init framerate emulation */
2036     for (i = 0; i < nb_input_files; i++) {
2037         InputFile *ifile = &input_files[i];
2038         if (ifile->rate_emu)
2039             for (j = 0; j < ifile->nb_streams; j++)
2040                 input_streams[j + ifile->ist_index].start = av_gettime();
2041     }
2042
2043     /* output stream init */
2044     for(i=0;i<nb_output_files;i++) {
2045         os = output_files[i].ctx;
2046         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2047             av_dump_format(os, i, os->filename, 1);
2048             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2049             return AVERROR(EINVAL);
2050         }
2051     }
2052
2053     /* for each output stream, we compute the right encoding parameters */
2054     for (i = 0; i < nb_output_streams; i++) {
2055         ost = &output_streams[i];
2056         os = output_files[ost->file_index].ctx;
2057         ist = &input_streams[ost->source_index];
2058
2059         if (ost->attachment_filename)
2060             continue;
2061
2062         codec = ost->st->codec;
2063         icodec = ist->st->codec;
2064
2065         ost->st->disposition = ist->st->disposition;
2066         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2067         codec->chroma_sample_location = icodec->chroma_sample_location;
2068
2069         if (ost->stream_copy) {
2070             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2071
2072             if (extra_size > INT_MAX) {
2073                 return AVERROR(EINVAL);
2074             }
2075
2076             /* if stream_copy is selected, no need to decode or encode */
2077             codec->codec_id = icodec->codec_id;
2078             codec->codec_type = icodec->codec_type;
2079
2080             if(!codec->codec_tag){
2081                 if(   !os->oformat->codec_tag
2082                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2083                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2084                     codec->codec_tag = icodec->codec_tag;
2085             }
2086
2087             codec->bit_rate = icodec->bit_rate;
2088             codec->rc_max_rate    = icodec->rc_max_rate;
2089             codec->rc_buffer_size = icodec->rc_buffer_size;
2090             codec->extradata= av_mallocz(extra_size);
2091             if (!codec->extradata) {
2092                 return AVERROR(ENOMEM);
2093             }
2094             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2095             codec->extradata_size= icodec->extradata_size;
2096
2097             codec->time_base = ist->st->time_base;
2098             if(!strcmp(os->oformat->name, "avi")) {
2099                 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){
2100                     codec->time_base = icodec->time_base;
2101                     codec->time_base.num *= icodec->ticks_per_frame;
2102                     codec->time_base.den *= 2;
2103                 }
2104             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2105                 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){
2106                     codec->time_base = icodec->time_base;
2107                     codec->time_base.num *= icodec->ticks_per_frame;
2108                 }
2109             }
2110             av_reduce(&codec->time_base.num, &codec->time_base.den,
2111                         codec->time_base.num, codec->time_base.den, INT_MAX);
2112
2113             switch(codec->codec_type) {
2114             case AVMEDIA_TYPE_AUDIO:
2115                 if(audio_volume != 256) {
2116                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2117                     exit_program(1);
2118                 }
2119                 codec->channel_layout = icodec->channel_layout;
2120                 codec->sample_rate = icodec->sample_rate;
2121                 codec->channels = icodec->channels;
2122                 codec->frame_size = icodec->frame_size;
2123                 codec->audio_service_type = icodec->audio_service_type;
2124                 codec->block_align= icodec->block_align;
2125                 break;
2126             case AVMEDIA_TYPE_VIDEO:
2127                 codec->pix_fmt = icodec->pix_fmt;
2128                 codec->width = icodec->width;
2129                 codec->height = icodec->height;
2130                 codec->has_b_frames = icodec->has_b_frames;
2131                 if (!codec->sample_aspect_ratio.num) {
2132                     codec->sample_aspect_ratio =
2133                     ost->st->sample_aspect_ratio =
2134                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2135                         ist->st->codec->sample_aspect_ratio.num ?
2136                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2137                 }
2138                 break;
2139             case AVMEDIA_TYPE_SUBTITLE:
2140                 codec->width = icodec->width;
2141                 codec->height = icodec->height;
2142                 break;
2143             case AVMEDIA_TYPE_DATA:
2144             case AVMEDIA_TYPE_ATTACHMENT:
2145                 break;
2146             default:
2147                 abort();
2148             }
2149         } else {
2150             if (!ost->enc)
2151                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2152             ist->decoding_needed = 1;
2153             ost->encoding_needed = 1;
2154             switch(codec->codec_type) {
2155             case AVMEDIA_TYPE_AUDIO:
2156                 ost->fifo= av_fifo_alloc(1024);
2157                 if (!ost->fifo) {
2158                     return AVERROR(ENOMEM);
2159                 }
2160                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2161                 if (!codec->sample_rate)
2162                     codec->sample_rate = icodec->sample_rate;
2163                 choose_sample_rate(ost->st, ost->enc);
2164                 codec->time_base = (AVRational){1, codec->sample_rate};
2165                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2166                     codec->sample_fmt = icodec->sample_fmt;
2167                 choose_sample_fmt(ost->st, ost->enc);
2168                 if (!codec->channels) {
2169                     codec->channels = icodec->channels;
2170                     codec->channel_layout = icodec->channel_layout;
2171                 }
2172                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2173                     codec->channel_layout = 0;
2174                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2175                 icodec->request_channels = codec->channels;
2176                 ost->resample_sample_fmt  = icodec->sample_fmt;
2177                 ost->resample_sample_rate = icodec->sample_rate;
2178                 ost->resample_channels    = icodec->channels;
2179                 break;
2180             case AVMEDIA_TYPE_VIDEO:
2181                 if (codec->pix_fmt == PIX_FMT_NONE)
2182                     codec->pix_fmt = icodec->pix_fmt;
2183                 choose_pixel_fmt(ost->st, ost->enc);
2184
2185                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2186                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2187                     exit_program(1);
2188                 }
2189
2190                 if (!codec->width || !codec->height) {
2191                     codec->width  = icodec->width;
2192                     codec->height = icodec->height;
2193                 }
2194
2195                 ost->video_resample = codec->width   != icodec->width  ||
2196                                       codec->height  != icodec->height ||
2197                                       codec->pix_fmt != icodec->pix_fmt;
2198                 if (ost->video_resample) {
2199                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2200                 }
2201
2202                 ost->resample_height = icodec->height;
2203                 ost->resample_width  = icodec->width;
2204                 ost->resample_pix_fmt= icodec->pix_fmt;
2205
2206                 if (!ost->frame_rate.num)
2207                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2208                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2209                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2210                     ost->frame_rate = ost->enc->supported_framerates[idx];
2211                 }
2212                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2213                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2214                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2215                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2216                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2217                 }
2218
2219 #if CONFIG_AVFILTER
2220                 if (configure_video_filters(ist, ost)) {
2221                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2222                     exit(1);
2223                 }
2224 #endif
2225                 break;
2226             case AVMEDIA_TYPE_SUBTITLE:
2227                 break;
2228             default:
2229                 abort();
2230                 break;
2231             }
2232             /* two pass mode */
2233             if (codec->codec_id != CODEC_ID_H264 &&
2234                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2235                 char logfilename[1024];
2236                 FILE *f;
2237
2238                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2239                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2240                          i);
2241                 if (codec->flags & CODEC_FLAG_PASS1) {
2242                     f = fopen(logfilename, "wb");
2243                     if (!f) {
2244                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2245                                logfilename, strerror(errno));
2246                         exit_program(1);
2247                     }
2248                     ost->logfile = f;
2249                 } else {
2250                     char  *logbuffer;
2251                     size_t logbuffer_size;
2252                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2253                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2254                                logfilename);
2255                         exit_program(1);
2256                     }
2257                     codec->stats_in = logbuffer;
2258                 }
2259             }
2260         }
2261         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2262             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2263             int size= codec->width * codec->height;
2264             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2265         }
2266     }
2267
2268     if (!bit_buffer)
2269         bit_buffer = av_malloc(bit_buffer_size);
2270     if (!bit_buffer) {
2271         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2272                bit_buffer_size);
2273         return AVERROR(ENOMEM);
2274     }
2275
2276     /* open each encoder */
2277     for (i = 0; i < nb_output_streams; i++) {
2278         ost = &output_streams[i];
2279         if (ost->encoding_needed) {
2280             AVCodec *codec = ost->enc;
2281             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2282             if (!codec) {
2283                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2284                          ost->st->codec->codec_id, ost->file_index, ost->index);
2285                 ret = AVERROR(EINVAL);
2286                 goto dump_format;
2287             }
2288             if (dec->subtitle_header) {
2289                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2290                 if (!ost->st->codec->subtitle_header) {
2291                     ret = AVERROR(ENOMEM);
2292                     goto dump_format;
2293                 }
2294                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2295                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2296             }
2297             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2298                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2299                         ost->file_index, ost->index);
2300                 ret = AVERROR(EINVAL);
2301                 goto dump_format;
2302             }
2303             assert_codec_experimental(ost->st->codec, 1);
2304             assert_avoptions(ost->opts);
2305             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2306                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2307                                              "It takes bits/s as argument, not kbits/s\n");
2308             extra_size += ost->st->codec->extradata_size;
2309
2310             if (ost->st->codec->me_threshold)
2311                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2312         }
2313     }
2314
2315     /* init input streams */
2316     for (i = 0; i < nb_input_streams; i++)
2317         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2318             goto dump_format;
2319
2320     /* discard unused programs */
2321     for (i = 0; i < nb_input_files; i++) {
2322         InputFile *ifile = &input_files[i];
2323         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2324             AVProgram *p = ifile->ctx->programs[j];
2325             int discard  = AVDISCARD_ALL;
2326
2327             for (k = 0; k < p->nb_stream_indexes; k++)
2328                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2329                     discard = AVDISCARD_DEFAULT;
2330                     break;
2331                 }
2332             p->discard = discard;
2333         }
2334     }
2335
2336     /* open files and write file headers */
2337     for (i = 0; i < nb_output_files; i++) {
2338         os = output_files[i].ctx;
2339         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2340             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2341             ret = AVERROR(EINVAL);
2342             goto dump_format;
2343         }
2344 //        assert_avoptions(output_files[i].opts);
2345         if (strcmp(os->oformat->name, "rtp")) {
2346             want_sdp = 0;
2347         }
2348     }
2349
2350  dump_format:
2351     /* dump the file output parameters - cannot be done before in case
2352        of stream copy */
2353     for(i=0;i<nb_output_files;i++) {
2354         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2355     }
2356
2357     /* dump the stream mapping */
2358     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2359     for (i = 0; i < nb_output_streams; i++) {
2360         ost = &output_streams[i];
2361
2362         if (ost->attachment_filename) {
2363             /* an attached file */
2364             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2365                    ost->attachment_filename, ost->file_index, ost->index);
2366             continue;
2367         }
2368         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2369                input_streams[ost->source_index].file_index,
2370                input_streams[ost->source_index].st->index,
2371                ost->file_index,
2372                ost->index);
2373         if (ost->sync_ist != &input_streams[ost->source_index])
2374             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2375                    ost->sync_ist->file_index,
2376                    ost->sync_ist->st->index);
2377         if (ost->stream_copy)
2378             av_log(NULL, AV_LOG_INFO, " (copy)");
2379         else
2380             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2381                    input_streams[ost->source_index].dec->name : "?",
2382                    ost->enc ? ost->enc->name : "?");
2383         av_log(NULL, AV_LOG_INFO, "\n");
2384     }
2385
2386     if (ret) {
2387         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2388         return ret;
2389     }
2390
2391     if (want_sdp) {
2392         print_sdp(output_files, nb_output_files);
2393     }
2394
2395     return 0;
2396 }
2397
2398 /*
2399  * The following code is the main loop of the file converter
2400  */
2401 static int transcode(OutputFile *output_files,
2402                      int nb_output_files,
2403                      InputFile *input_files,
2404                      int nb_input_files)
2405 {
2406     int ret, i;
2407     AVFormatContext *is, *os;
2408     OutputStream *ost;
2409     InputStream *ist;
2410     uint8_t *no_packet;
2411     int no_packet_count=0;
2412     int64_t timer_start;
2413     int key;
2414
2415     if (!(no_packet = av_mallocz(nb_input_files)))
2416         exit_program(1);
2417
2418     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2419     if (ret < 0)
2420         goto fail;
2421
2422     if (!using_stdin) {
2423         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2424         avio_set_interrupt_cb(decode_interrupt_cb);
2425     }
2426     term_init();
2427
2428     timer_start = av_gettime();
2429
2430     for(; received_sigterm == 0;) {
2431         int file_index, ist_index;
2432         AVPacket pkt;
2433         int64_t ipts_min;
2434         double opts_min;
2435
2436         ipts_min = INT64_MAX;
2437         opts_min= 1e100;
2438         /* if 'q' pressed, exits */
2439         if (!using_stdin) {
2440             if (q_pressed)
2441                 break;
2442             /* read_key() returns 0 on EOF */
2443             key = read_key();
2444             if (key == 'q')
2445                 break;
2446             if (key == '+') av_log_set_level(av_log_get_level()+10);
2447             if (key == '-') av_log_set_level(av_log_get_level()-10);
2448             if (key == 's') qp_hist     ^= 1;
2449             if (key == 'h'){
2450                 if (do_hex_dump){
2451                     do_hex_dump = do_pkt_dump = 0;
2452                 } else if(do_pkt_dump){
2453                     do_hex_dump = 1;
2454                 } else
2455                     do_pkt_dump = 1;
2456                 av_log_set_level(AV_LOG_DEBUG);
2457             }
2458             if (key == 'd' || key == 'D'){
2459                 int debug=0;
2460                 if(key == 'D') {
2461                     debug = input_streams[0].st->codec->debug<<1;
2462                     if(!debug) debug = 1;
2463                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2464                         debug += debug;
2465                 }else
2466                     scanf("%d", &debug);
2467                 for(i=0;i<nb_input_streams;i++) {
2468                     input_streams[i].st->codec->debug = debug;
2469                 }
2470                 for(i=0;i<nb_output_streams;i++) {
2471                     ost = &output_streams[i];
2472                     ost->st->codec->debug = debug;
2473                 }
2474                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2475                 fprintf(stderr,"debug=%d\n", debug);
2476             }
2477             if (key == '?'){
2478                 fprintf(stderr, "key    function\n"
2479                                 "?      show this help\n"
2480                                 "+      increase verbosity\n"
2481                                 "-      decrease verbosity\n"
2482                                 "D      cycle through available debug modes\n"
2483                                 "h      dump packets/hex press to cycle through the 3 states\n"
2484                                 "q      quit\n"
2485                                 "s      Show QP histogram\n"
2486                 );
2487             }
2488         }
2489
2490         /* select the stream that we must read now by looking at the
2491            smallest output pts */
2492         file_index = -1;
2493         for (i = 0; i < nb_output_streams; i++) {
2494             OutputFile *of;
2495             int64_t ipts;
2496             double  opts;
2497             ost = &output_streams[i];
2498             of = &output_files[ost->file_index];
2499             os = output_files[ost->file_index].ctx;
2500             ist = &input_streams[ost->source_index];
2501             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2502                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2503                 continue;
2504             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2505             ipts = ist->pts;
2506             if (!input_files[ist->file_index].eof_reached){
2507                 if(ipts < ipts_min) {
2508                     ipts_min = ipts;
2509                     if(input_sync ) file_index = ist->file_index;
2510                 }
2511                 if(opts < opts_min) {
2512                     opts_min = opts;
2513                     if(!input_sync) file_index = ist->file_index;
2514                 }
2515             }
2516             if (ost->frame_number >= ost->max_frames) {
2517                 int j;
2518                 for (j = 0; j < of->ctx->nb_streams; j++)
2519                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2520                 continue;
2521             }
2522         }
2523         /* if none, if is finished */
2524         if (file_index < 0) {
2525             if(no_packet_count){
2526                 no_packet_count=0;
2527                 memset(no_packet, 0, nb_input_files);
2528                 usleep(10000);
2529                 continue;
2530             }
2531             break;
2532         }
2533
2534         /* read a frame from it and output it in the fifo */
2535         is = input_files[file_index].ctx;
2536         ret= av_read_frame(is, &pkt);
2537         if(ret == AVERROR(EAGAIN)){
2538             no_packet[file_index]=1;
2539             no_packet_count++;
2540             continue;
2541         }
2542         if (ret < 0) {
2543             input_files[file_index].eof_reached = 1;
2544             if (opt_shortest)
2545                 break;
2546             else
2547                 continue;
2548         }
2549
2550         no_packet_count=0;
2551         memset(no_packet, 0, nb_input_files);
2552
2553         if (do_pkt_dump) {
2554             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2555                              is->streams[pkt.stream_index]);
2556         }
2557         /* the following test is needed in case new streams appear
2558            dynamically in stream : we ignore them */
2559         if (pkt.stream_index >= input_files[file_index].nb_streams)
2560             goto discard_packet;
2561         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2562         ist = &input_streams[ist_index];
2563         if (ist->discard)
2564             goto discard_packet;
2565
2566         if (pkt.dts != AV_NOPTS_VALUE)
2567             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2568         if (pkt.pts != AV_NOPTS_VALUE)
2569             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2570
2571         if(pkt.pts != AV_NOPTS_VALUE)
2572             pkt.pts *= ist->ts_scale;
2573         if(pkt.dts != AV_NOPTS_VALUE)
2574             pkt.dts *= ist->ts_scale;
2575
2576 //        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);
2577         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2578             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2579             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2580             int64_t delta= pkt_dts - ist->next_pts;
2581             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2582                 input_files[ist->file_index].ts_offset -= delta;
2583                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2584                        delta, input_files[ist->file_index].ts_offset);
2585                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2586                 if(pkt.pts != AV_NOPTS_VALUE)
2587                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2588             }
2589         }
2590
2591         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2592         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2593
2594             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2595                    ist->file_index, ist->st->index);
2596             if (exit_on_error)
2597                 exit_program(1);
2598             av_free_packet(&pkt);
2599             continue;
2600         }
2601
2602     discard_packet:
2603         av_free_packet(&pkt);
2604
2605         /* dump report by using the output first video and audio streams */
2606         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2607     }
2608
2609     /* at the end of stream, we must flush the decoder buffers */
2610     for (i = 0; i < nb_input_streams; i++) {
2611         ist = &input_streams[i];
2612         if (ist->decoding_needed) {
2613             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2614         }
2615     }
2616     flush_encoders(output_streams, nb_output_streams);
2617
2618     term_exit();
2619
2620     /* write the trailer if needed and close file */
2621     for(i=0;i<nb_output_files;i++) {
2622         os = output_files[i].ctx;
2623         av_write_trailer(os);
2624     }
2625
2626     /* dump report by using the first video and audio streams */
2627     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2628
2629     /* close each encoder */
2630     for (i = 0; i < nb_output_streams; i++) {
2631         ost = &output_streams[i];
2632         if (ost->encoding_needed) {
2633             av_freep(&ost->st->codec->stats_in);
2634             avcodec_close(ost->st->codec);
2635         }
2636 #if CONFIG_AVFILTER
2637         avfilter_graph_free(&ost->graph);
2638 #endif
2639     }
2640
2641     /* close each decoder */
2642     for (i = 0; i < nb_input_streams; i++) {
2643         ist = &input_streams[i];
2644         if (ist->decoding_needed) {
2645             avcodec_close(ist->st->codec);
2646         }
2647     }
2648
2649     /* finished ! */
2650     ret = 0;
2651
2652  fail:
2653     av_freep(&bit_buffer);
2654     av_freep(&no_packet);
2655
2656     if (output_streams) {
2657         for (i = 0; i < nb_output_streams; i++) {
2658             ost = &output_streams[i];
2659             if (ost) {
2660                 if (ost->stream_copy)
2661                     av_freep(&ost->st->codec->extradata);
2662                 if (ost->logfile) {
2663                     fclose(ost->logfile);
2664                     ost->logfile = NULL;
2665                 }
2666                 av_fifo_free(ost->fifo); /* works even if fifo is not
2667                                              initialized but set to zero */
2668                 av_freep(&ost->st->codec->subtitle_header);
2669                 av_free(ost->resample_frame.data[0]);
2670                 av_free(ost->forced_kf_pts);
2671                 if (ost->video_resample)
2672                     sws_freeContext(ost->img_resample_ctx);
2673                 if (ost->resample)
2674                     audio_resample_close(ost->resample);
2675                 if (ost->reformat_ctx)
2676                     av_audio_convert_free(ost->reformat_ctx);
2677                 av_dict_free(&ost->opts);
2678             }
2679         }
2680     }
2681     return ret;
2682 }
2683
2684 static double parse_frame_aspect_ratio(const char *arg)
2685 {
2686     int x = 0, y = 0;
2687     double ar = 0;
2688     const char *p;
2689     char *end;
2690
2691     p = strchr(arg, ':');
2692     if (p) {
2693         x = strtol(arg, &end, 10);
2694         if (end == p)
2695             y = strtol(end+1, &end, 10);
2696         if (x > 0 && y > 0)
2697             ar = (double)x / (double)y;
2698     } else
2699         ar = strtod(arg, NULL);
2700
2701     if (!ar) {
2702         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2703         exit_program(1);
2704     }
2705     return ar;
2706 }
2707
2708 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2709 {
2710     return parse_option(o, "codec:a", arg, options);
2711 }
2712
2713 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2714 {
2715     return parse_option(o, "codec:v", arg, options);
2716 }
2717
2718 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2719 {
2720     return parse_option(o, "codec:s", arg, options);
2721 }
2722
2723 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2724 {
2725     return parse_option(o, "codec:d", arg, options);
2726 }
2727
2728 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2729 {
2730     StreamMap *m = NULL;
2731     int i, negative = 0, file_idx;
2732     int sync_file_idx = -1, sync_stream_idx;
2733     char *p, *sync;
2734     char *map;
2735
2736     if (*arg == '-') {
2737         negative = 1;
2738         arg++;
2739     }
2740     map = av_strdup(arg);
2741
2742     /* parse sync stream first, just pick first matching stream */
2743     if (sync = strchr(map, ',')) {
2744         *sync = 0;
2745         sync_file_idx = strtol(sync + 1, &sync, 0);
2746         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2747             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2748             exit_program(1);
2749         }
2750         if (*sync)
2751             sync++;
2752         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2753             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2754                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2755                 sync_stream_idx = i;
2756                 break;
2757             }
2758         if (i == input_files[sync_file_idx].nb_streams) {
2759             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2760                                        "match any streams.\n", arg);
2761             exit_program(1);
2762         }
2763     }
2764
2765
2766     file_idx = strtol(map, &p, 0);
2767     if (file_idx >= nb_input_files || file_idx < 0) {
2768         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2769         exit_program(1);
2770     }
2771     if (negative)
2772         /* disable some already defined maps */
2773         for (i = 0; i < o->nb_stream_maps; i++) {
2774             m = &o->stream_maps[i];
2775             if (file_idx == m->file_index &&
2776                 check_stream_specifier(input_files[m->file_index].ctx,
2777                                        input_files[m->file_index].ctx->streams[m->stream_index],
2778                                        *p == ':' ? p + 1 : p) > 0)
2779                 m->disabled = 1;
2780         }
2781     else
2782         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2783             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2784                         *p == ':' ? p + 1 : p) <= 0)
2785                 continue;
2786             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2787                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2788             m = &o->stream_maps[o->nb_stream_maps - 1];
2789
2790             m->file_index   = file_idx;
2791             m->stream_index = i;
2792
2793             if (sync_file_idx >= 0) {
2794                 m->sync_file_index   = sync_file_idx;
2795                 m->sync_stream_index = sync_stream_idx;
2796             } else {
2797                 m->sync_file_index   = file_idx;
2798                 m->sync_stream_index = i;
2799             }
2800         }
2801
2802     if (!m) {
2803         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2804         exit_program(1);
2805     }
2806
2807     av_freep(&map);
2808     return 0;
2809 }
2810
2811 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2812 {
2813     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2814                                 &o->nb_attachments, o->nb_attachments + 1);
2815     o->attachments[o->nb_attachments - 1] = arg;
2816     return 0;
2817 }
2818
2819 static void parse_meta_type(char *arg, char *type, int *index)
2820 {
2821     if (*arg) {
2822         *type = *arg;
2823         switch (*arg) {
2824         case 'g':
2825             break;
2826         case 's':
2827         case 'c':
2828         case 'p':
2829             if (*(++arg) == ':')
2830                 *index = strtol(++arg, NULL, 0);
2831             break;
2832         default:
2833             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2834             exit_program(1);
2835         }
2836     } else
2837         *type = 'g';
2838 }
2839
2840 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2841 {
2842     MetadataMap *m, *m1;
2843     char *p;
2844
2845     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2846                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2847
2848     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2849     m->file = strtol(arg, &p, 0);
2850     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2851
2852     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2853     if (p = strchr(opt, ':'))
2854         parse_meta_type(p + 1, &m1->type, &m1->index);
2855     else
2856         m1->type = 'g';
2857
2858     if (m->type == 'g' || m1->type == 'g')
2859         o->metadata_global_manual = 1;
2860     if (m->type == 's' || m1->type == 's')
2861         o->metadata_streams_manual = 1;
2862     if (m->type == 'c' || m1->type == 'c')
2863         o->metadata_chapters_manual = 1;
2864
2865     return 0;
2866 }
2867
2868 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2869 {
2870     const char *codec_string = encoder ? "encoder" : "decoder";
2871     AVCodec *codec;
2872
2873     codec = encoder ?
2874         avcodec_find_encoder_by_name(name) :
2875         avcodec_find_decoder_by_name(name);
2876     if(!codec) {
2877         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
2878         exit_program(1);
2879     }
2880     if(codec->type != type) {
2881         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
2882         exit_program(1);
2883     }
2884     return codec;
2885 }
2886
2887 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
2888 {
2889     char *codec_name = NULL;
2890
2891     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2892     if (codec_name) {
2893         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
2894         st->codec->codec_id = codec->id;
2895         return codec;
2896     } else
2897         return avcodec_find_decoder(st->codec->codec_id);
2898 }
2899
2900 /**
2901  * Add all the streams from the given input file to the global
2902  * list of input streams.
2903  */
2904 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2905 {
2906     int i, rfps, rfps_base;
2907
2908     for (i = 0; i < ic->nb_streams; i++) {
2909         AVStream *st = ic->streams[i];
2910         AVCodecContext *dec = st->codec;
2911         InputStream *ist;
2912
2913         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2914         ist = &input_streams[nb_input_streams - 1];
2915         ist->st = st;
2916         ist->file_index = nb_input_files;
2917         ist->discard = 1;
2918         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2919
2920         ist->ts_scale = 1.0;
2921         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
2922
2923         ist->dec = choose_decoder(o, ic, st);
2924
2925         switch (dec->codec_type) {
2926         case AVMEDIA_TYPE_AUDIO:
2927             if(!ist->dec)
2928                 ist->dec = avcodec_find_decoder(dec->codec_id);
2929             if(o->audio_disable)
2930                 st->discard= AVDISCARD_ALL;
2931             break;
2932         case AVMEDIA_TYPE_VIDEO:
2933             if(!ist->dec)
2934                 ist->dec = avcodec_find_decoder(dec->codec_id);
2935             rfps      = ic->streams[i]->r_frame_rate.num;
2936             rfps_base = ic->streams[i]->r_frame_rate.den;
2937             if (dec->lowres) {
2938                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2939             }
2940
2941             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2942
2943                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2944                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2945                        (float)rfps / rfps_base, rfps, rfps_base);
2946             }
2947
2948             if (o->video_disable)
2949                 st->discard= AVDISCARD_ALL;
2950             else if(video_discard)
2951                 st->discard= video_discard;
2952             break;
2953         case AVMEDIA_TYPE_DATA:
2954             break;
2955         case AVMEDIA_TYPE_SUBTITLE:
2956             if(!ist->dec)
2957                 ist->dec = avcodec_find_decoder(dec->codec_id);
2958             if(o->subtitle_disable)
2959                 st->discard = AVDISCARD_ALL;
2960             break;
2961         case AVMEDIA_TYPE_ATTACHMENT:
2962         case AVMEDIA_TYPE_UNKNOWN:
2963             break;
2964         default:
2965             abort();
2966         }
2967     }
2968 }
2969
2970 static void assert_file_overwrite(const char *filename)
2971 {
2972     if (!file_overwrite &&
2973         (strchr(filename, ':') == NULL || filename[1] == ':' ||
2974          av_strstart(filename, "file:", NULL))) {
2975         if (avio_check(filename, 0) == 0) {
2976             if (!using_stdin) {
2977                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
2978                 fflush(stderr);
2979                 if (!read_yesno()) {
2980                     fprintf(stderr, "Not overwriting - exiting\n");
2981                     exit_program(1);
2982                 }
2983             }
2984             else {
2985                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
2986                 exit_program(1);
2987             }
2988         }
2989     }
2990 }
2991
2992 static void dump_attachment(AVStream *st, const char *filename)
2993 {
2994     int ret;
2995     AVIOContext *out = NULL;
2996     AVDictionaryEntry *e;
2997
2998     if (!st->codec->extradata_size) {
2999         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3000                nb_input_files - 1, st->index);
3001         return;
3002     }
3003     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3004         filename = e->value;
3005     if (!*filename) {
3006         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3007                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3008         exit_program(1);
3009     }
3010
3011     assert_file_overwrite(filename);
3012
3013     if ((ret = avio_open (&out, filename, AVIO_FLAG_WRITE)) < 0) {
3014         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3015                filename);
3016         exit_program(1);
3017     }
3018
3019     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3020     avio_flush(out);
3021     avio_close(out);
3022 }
3023
3024 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3025 {
3026     AVFormatContext *ic;
3027     AVInputFormat *file_iformat = NULL;
3028     int err, i, ret;
3029     int64_t timestamp;
3030     uint8_t buf[128];
3031     AVDictionary **opts;
3032     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3033
3034     if (o->format) {
3035         if (!(file_iformat = av_find_input_format(o->format))) {
3036             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3037             exit_program(1);
3038         }
3039     }
3040
3041     if (!strcmp(filename, "-"))
3042         filename = "pipe:";
3043
3044     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3045                     !strcmp(filename, "/dev/stdin");
3046
3047     /* get default parameters from command line */
3048     ic = avformat_alloc_context();
3049     if (!ic) {
3050         print_error(filename, AVERROR(ENOMEM));
3051         exit_program(1);
3052     }
3053     if (o->nb_audio_sample_rate) {
3054         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3055         av_dict_set(&format_opts, "sample_rate", buf, 0);
3056     }
3057     if (o->nb_audio_channels) {
3058         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3059         av_dict_set(&format_opts, "channels", buf, 0);
3060     }
3061     if (o->nb_frame_rates) {
3062         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3063     }
3064     if (o->nb_frame_sizes) {
3065         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3066     }
3067     if (o->nb_frame_pix_fmts)
3068         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3069
3070     ic->flags |= AVFMT_FLAG_NONBLOCK;
3071
3072     /* open the input file with generic libav function */
3073     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3074     if (err < 0) {
3075         print_error(filename, err);
3076         exit_program(1);
3077     }
3078     assert_avoptions(format_opts);
3079
3080     /* apply forced codec ids */
3081     for (i = 0; i < ic->nb_streams; i++)
3082         choose_decoder(o, ic, ic->streams[i]);
3083
3084     /* Set AVCodecContext options for avformat_find_stream_info */
3085     opts = setup_find_stream_info_opts(ic, codec_opts);
3086     orig_nb_streams = ic->nb_streams;
3087
3088     /* If not enough info to get the stream parameters, we decode the
3089        first frames to get it. (used in mpeg case for example) */
3090     ret = avformat_find_stream_info(ic, opts);
3091     if (ret < 0) {
3092         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3093         av_close_input_file(ic);
3094         exit_program(1);
3095     }
3096
3097     timestamp = o->start_time;
3098     /* add the stream start time */
3099     if (ic->start_time != AV_NOPTS_VALUE)
3100         timestamp += ic->start_time;
3101
3102     /* if seeking requested, we execute it */
3103     if (o->start_time != 0) {
3104         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3105         if (ret < 0) {
3106             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3107                    filename, (double)timestamp / AV_TIME_BASE);
3108         }
3109     }
3110
3111     /* update the current parameters so that they match the one of the input stream */
3112     add_input_streams(o, ic);
3113
3114     /* dump the file content */
3115     av_dump_format(ic, nb_input_files, filename, 0);
3116
3117     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3118     input_files[nb_input_files - 1].ctx        = ic;
3119     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3120     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3121     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3122     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3123
3124     for (i = 0; i < o->nb_dump_attachment; i++) {
3125         int j;
3126
3127         for (j = 0; j < ic->nb_streams; j++) {
3128             AVStream *st = ic->streams[j];
3129
3130             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3131                 dump_attachment(st, o->dump_attachment[i].u.str);
3132         }
3133     }
3134
3135     for (i = 0; i < orig_nb_streams; i++)
3136         av_dict_free(&opts[i]);
3137     av_freep(&opts);
3138
3139     reset_options(o);
3140     return 0;
3141 }
3142
3143 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3144                                     AVCodecContext *avctx)
3145 {
3146     char *p;
3147     int n = 1, i;
3148     int64_t t;
3149
3150     for (p = kf; *p; p++)
3151         if (*p == ',')
3152             n++;
3153     ost->forced_kf_count = n;
3154     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3155     if (!ost->forced_kf_pts) {
3156         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3157         exit_program(1);
3158     }
3159     for (i = 0; i < n; i++) {
3160         p = i ? strchr(p, ',') + 1 : kf;
3161         t = parse_time_or_die("force_key_frames", p, 1);
3162         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3163     }
3164 }
3165
3166 static uint8_t *get_line(AVIOContext *s)
3167 {
3168     AVIOContext *line;
3169     uint8_t *buf;
3170     char c;
3171
3172     if (avio_open_dyn_buf(&line) < 0) {
3173         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3174         exit_program(1);
3175     }
3176
3177     while ((c = avio_r8(s)) && c != '\n')
3178         avio_w8(line, c);
3179     avio_w8(line, 0);
3180     avio_close_dyn_buf(line, &buf);
3181
3182     return buf;
3183 }
3184
3185 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3186 {
3187     int i, ret = 1;
3188     char filename[1000];
3189     const char *base[3] = { getenv("AVCONV_DATADIR"),
3190                             getenv("HOME"),
3191                             AVCONV_DATADIR,
3192                             };
3193
3194     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3195         if (!base[i])
3196             continue;
3197         if (codec_name) {
3198             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3199                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3200             ret = avio_open(s, filename, AVIO_FLAG_READ);
3201         }
3202         if (ret) {
3203             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3204                      i != 1 ? "" : "/.avconv", preset_name);
3205             ret = avio_open(s, filename, AVIO_FLAG_READ);
3206         }
3207     }
3208     return ret;
3209 }
3210
3211 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3212 {
3213     char *codec_name = NULL;
3214
3215     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3216     if (!codec_name) {
3217         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3218                                                   NULL, ost->st->codec->codec_type);
3219         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3220     } else if (!strcmp(codec_name, "copy"))
3221         ost->stream_copy = 1;
3222     else {
3223         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3224         ost->st->codec->codec_id = ost->enc->id;
3225     }
3226 }
3227
3228 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3229 {
3230     OutputStream *ost;
3231     AVStream *st = avformat_new_stream(oc, NULL);
3232     int idx      = oc->nb_streams - 1, ret = 0;
3233     char *bsf = NULL, *next, *codec_tag = NULL;
3234     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3235     double qscale = -1;
3236     char *buf = NULL, *arg = NULL, *preset = NULL;
3237     AVIOContext *s = NULL;
3238
3239     if (!st) {
3240         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3241         exit_program(1);
3242     }
3243
3244     if (oc->nb_streams - 1 < o->nb_streamid_map)
3245         st->id = o->streamid_map[oc->nb_streams - 1];
3246
3247     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3248                                 nb_output_streams + 1);
3249     ost = &output_streams[nb_output_streams - 1];
3250     ost->file_index = nb_output_files;
3251     ost->index = idx;
3252     ost->st    = st;
3253     st->codec->codec_type = type;
3254     choose_encoder(o, oc, ost);
3255     if (ost->enc) {
3256         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3257     }
3258
3259     avcodec_get_context_defaults3(st->codec, ost->enc);
3260     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3261
3262     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3263     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3264         do  {
3265             buf = get_line(s);
3266             if (!buf[0] || buf[0] == '#') {
3267                 av_free(buf);
3268                 continue;
3269             }
3270             if (!(arg = strchr(buf, '='))) {
3271                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3272                 exit_program(1);
3273             }
3274             *arg++ = 0;
3275             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3276             av_free(buf);
3277         } while (!s->eof_reached);
3278         avio_close(s);
3279     }
3280     if (ret) {
3281         av_log(NULL, AV_LOG_FATAL,
3282                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3283                preset, ost->file_index, ost->index);
3284         exit_program(1);
3285     }
3286
3287     ost->max_frames = INT64_MAX;
3288     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3289
3290     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3291     while (bsf) {
3292         if (next = strchr(bsf, ','))
3293             *next++ = 0;
3294         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3295             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3296             exit_program(1);
3297         }
3298         if (bsfc_prev)
3299             bsfc_prev->next = bsfc;
3300         else
3301             ost->bitstream_filters = bsfc;
3302
3303         bsfc_prev = bsfc;
3304         bsf       = next;
3305     }
3306
3307     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3308     if (codec_tag) {
3309         uint32_t tag = strtol(codec_tag, &next, 0);
3310         if (*next)
3311             tag = AV_RL32(codec_tag);
3312         st->codec->codec_tag = tag;
3313     }
3314
3315     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3316     if (qscale >= 0 || same_quant) {
3317         st->codec->flags |= CODEC_FLAG_QSCALE;
3318         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3319     }
3320
3321     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3322         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3323
3324     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3325     return ost;
3326 }
3327
3328 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3329 {
3330     int i;
3331     const char *p = str;
3332     for(i = 0;; i++) {
3333         dest[i] = atoi(p);
3334         if(i == 63)
3335             break;
3336         p = strchr(p, ',');
3337         if(!p) {
3338             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3339             exit_program(1);
3340         }
3341         p++;
3342     }
3343 }
3344
3345 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3346 {
3347     AVStream *st;
3348     OutputStream *ost;
3349     AVCodecContext *video_enc;
3350
3351     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3352     st  = ost->st;
3353     video_enc = st->codec;
3354
3355     if (!ost->stream_copy) {
3356         const char *p = NULL;
3357         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3358         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3359         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3360         int i;
3361
3362         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3363         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3364             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3365             exit_program(1);
3366         }
3367
3368         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3369         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3370             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3371             exit_program(1);
3372         }
3373
3374         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3375         if (frame_aspect_ratio)
3376             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3377
3378         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3379         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3380             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3381             exit_program(1);
3382         }
3383         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3384
3385         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3386         if (intra_matrix) {
3387             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3388                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3389                 exit_program(1);
3390             }
3391             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3392         }
3393         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3394         if (inter_matrix) {
3395             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3396                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3397                 exit_program(1);
3398             }
3399             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3400         }
3401
3402         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3403         for(i=0; p; i++){
3404             int start, end, q;
3405             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3406             if(e!=3){
3407                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3408                 exit_program(1);
3409             }
3410             video_enc->rc_override=
3411                 av_realloc(video_enc->rc_override,
3412                            sizeof(RcOverride)*(i+1));
3413             video_enc->rc_override[i].start_frame= start;
3414             video_enc->rc_override[i].end_frame  = end;
3415             if(q>0){
3416                 video_enc->rc_override[i].qscale= q;
3417                 video_enc->rc_override[i].quality_factor= 1.0;
3418             }
3419             else{
3420                 video_enc->rc_override[i].qscale= 0;
3421                 video_enc->rc_override[i].quality_factor= -q/100.0;
3422             }
3423             p= strchr(p, '/');
3424             if(p) p++;
3425         }
3426         video_enc->rc_override_count=i;
3427         if (!video_enc->rc_initial_buffer_occupancy)
3428             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3429         video_enc->intra_dc_precision= intra_dc_precision - 8;
3430
3431         /* two pass mode */
3432         if (do_pass) {
3433             if (do_pass == 1) {
3434                 video_enc->flags |= CODEC_FLAG_PASS1;
3435             } else {
3436                 video_enc->flags |= CODEC_FLAG_PASS2;
3437             }
3438         }
3439
3440         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3441         if (forced_key_frames)
3442             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3443
3444         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3445
3446         ost->top_field_first = -1;
3447         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3448
3449         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3450
3451 #if CONFIG_AVFILTER
3452         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3453         if (filters)
3454             ost->avfilter = av_strdup(filters);
3455 #endif
3456     }
3457
3458     return ost;
3459 }
3460
3461 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3462 {
3463     AVStream *st;
3464     OutputStream *ost;
3465     AVCodecContext *audio_enc;
3466
3467     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3468     st  = ost->st;
3469
3470     audio_enc = st->codec;
3471     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3472
3473     if (!ost->stream_copy) {
3474         char *sample_fmt = NULL;
3475
3476         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3477
3478         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3479         if (sample_fmt &&
3480             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3481             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3482             exit_program(1);
3483         }
3484
3485         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3486     }
3487
3488     return ost;
3489 }
3490
3491 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3492 {
3493     OutputStream *ost;
3494
3495     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3496     if (!ost->stream_copy) {
3497         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3498         exit_program(1);
3499     }
3500
3501     return ost;
3502 }
3503
3504 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3505 {
3506     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3507     ost->stream_copy = 1;
3508     return ost;
3509 }
3510
3511 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3512 {
3513     AVStream *st;
3514     OutputStream *ost;
3515     AVCodecContext *subtitle_enc;
3516
3517     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3518     st  = ost->st;
3519     subtitle_enc = st->codec;
3520
3521     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3522
3523     return ost;
3524 }
3525
3526 /* arg format is "output-stream-index:streamid-value". */
3527 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3528 {
3529     int idx;
3530     char *p;
3531     char idx_str[16];
3532
3533     av_strlcpy(idx_str, arg, sizeof(idx_str));
3534     p = strchr(idx_str, ':');
3535     if (!p) {
3536         av_log(NULL, AV_LOG_FATAL,
3537                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3538                arg, opt);
3539         exit_program(1);
3540     }
3541     *p++ = '\0';
3542     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3543     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3544     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3545     return 0;
3546 }
3547
3548 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3549 {
3550     AVFormatContext *is = ifile->ctx;
3551     AVFormatContext *os = ofile->ctx;
3552     int i;
3553
3554     for (i = 0; i < is->nb_chapters; i++) {
3555         AVChapter *in_ch = is->chapters[i], *out_ch;
3556         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3557                                       AV_TIME_BASE_Q, in_ch->time_base);
3558         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3559                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3560
3561
3562         if (in_ch->end < ts_off)
3563             continue;
3564         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3565             break;
3566
3567         out_ch = av_mallocz(sizeof(AVChapter));
3568         if (!out_ch)
3569             return AVERROR(ENOMEM);
3570
3571         out_ch->id        = in_ch->id;
3572         out_ch->time_base = in_ch->time_base;
3573         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3574         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3575
3576         if (copy_metadata)
3577             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3578
3579         os->nb_chapters++;
3580         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3581         if (!os->chapters)
3582             return AVERROR(ENOMEM);
3583         os->chapters[os->nb_chapters - 1] = out_ch;
3584     }
3585     return 0;
3586 }
3587
3588 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3589 {
3590     int i, err;
3591     AVFormatContext *ic = NULL;
3592
3593     err = avformat_open_input(&ic, filename, NULL, NULL);
3594     if (err < 0)
3595         return err;
3596     /* copy stream format */
3597     for(i=0;i<ic->nb_streams;i++) {
3598         AVStream *st;
3599         OutputStream *ost;
3600         AVCodec *codec;
3601
3602         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3603         ost   = new_output_stream(o, s, codec->type);
3604         st    = ost->st;
3605
3606         // FIXME: a more elegant solution is needed
3607         memcpy(st, ic->streams[i], sizeof(AVStream));
3608         st->info = av_malloc(sizeof(*st->info));
3609         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3610         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3611
3612         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !ost->stream_copy)
3613             choose_sample_fmt(st, codec);
3614         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3615             choose_pixel_fmt(st, codec);
3616     }
3617
3618     av_close_input_file(ic);
3619     return 0;
3620 }
3621
3622 static void opt_output_file(void *optctx, const char *filename)
3623 {
3624     OptionsContext *o = optctx;
3625     AVFormatContext *oc;
3626     int i, err;
3627     AVOutputFormat *file_oformat;
3628     OutputStream *ost;
3629     InputStream  *ist;
3630
3631     if (!strcmp(filename, "-"))
3632         filename = "pipe:";
3633
3634     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3635     if (!oc) {
3636         print_error(filename, err);
3637         exit_program(1);
3638     }
3639
3640     file_oformat= oc->oformat;
3641
3642     if (!strcmp(file_oformat->name, "ffm") &&
3643         av_strstart(filename, "http:", NULL)) {
3644         /* special case for files sent to ffserver: we get the stream