Fixed segfault on memory allocation failure in ape demuxer.
[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 /* indexed by output file stream index */
115 static int *streamid_map = NULL;
116 static int nb_streamid_map = 0;
117
118 static int frame_width  = 0;
119 static int frame_height = 0;
120 static float frame_aspect_ratio = 0;
121 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
122 static int frame_bits_per_raw_sample = 0;
123 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
124 static AVRational frame_rate;
125 static float video_qscale = 0;
126 static uint16_t *intra_matrix = NULL;
127 static uint16_t *inter_matrix = NULL;
128 static const char *video_rc_override_string=NULL;
129 static int video_discard = 0;
130 static int same_quant = 0;
131 static int do_deinterlace = 0;
132 static int top_field_first = -1;
133 static int me_threshold = 0;
134 static int intra_dc_precision = 8;
135 static int qp_hist = 0;
136 #if CONFIG_AVFILTER
137 static char *vfilters = NULL;
138 #endif
139
140 static int audio_sample_rate = 0;
141 #define QSCALE_NONE -99999
142 static float audio_qscale = QSCALE_NONE;
143
144 static int file_overwrite = 0;
145 static int do_benchmark = 0;
146 static int do_hex_dump = 0;
147 static int do_pkt_dump = 0;
148 static int do_psnr = 0;
149 static int do_pass = 0;
150 static const char *pass_logfilename_prefix;
151 static int video_sync_method= -1;
152 static int audio_sync_method= 0;
153 static float audio_drift_threshold= 0.1;
154 static int copy_ts= 0;
155 static int copy_tb= 0;
156 static int opt_shortest = 0;
157 static char *vstats_filename;
158 static FILE *vstats_file;
159 static int opt_programid = 0;
160 static int copy_initial_nonkeyframes = 0;
161
162 static int audio_volume = 256;
163
164 static int exit_on_error = 0;
165 static int using_stdin = 0;
166 static int verbose = 1;
167 static int run_as_daemon  = 0;
168 static int q_pressed = 0;
169 static int64_t video_size = 0;
170 static int64_t audio_size = 0;
171 static int64_t extra_size = 0;
172 static int nb_frames_dup = 0;
173 static int nb_frames_drop = 0;
174 static int input_sync;
175 static int force_fps = 0;
176 static char *forced_key_frames = NULL;
177
178 static float dts_delta_threshold = 10;
179
180 static uint8_t *audio_buf;
181 static uint8_t *audio_out;
182 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
183
184 static short *samples;
185
186 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
187
188 typedef struct InputStream {
189     int file_index;
190     AVStream *st;
191     int discard;             /* true if stream data should be discarded */
192     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
193     AVCodec *dec;
194
195     int64_t       start;     /* time when read started */
196     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
197                                 is not defined */
198     int64_t       pts;       /* current pts */
199     double ts_scale;
200     int is_start;            /* is 1 at the start and after a discontinuity */
201     int showed_multi_packet_warning;
202     AVDictionary *opts;
203 } InputStream;
204
205 typedef struct InputFile {
206     AVFormatContext *ctx;
207     int eof_reached;      /* true if eof reached */
208     int ist_index;        /* index of first stream in ist_table */
209     int buffer_size;      /* current total buffer size */
210     int64_t ts_offset;
211     int nb_streams;       /* number of stream that avconv is aware of; may be different
212                              from ctx.nb_streams if new streams appear during av_read_frame() */
213     int rate_emu;
214 } InputFile;
215
216 typedef struct OutputStream {
217     int file_index;          /* file index */
218     int index;               /* stream index in the output file */
219     int source_index;        /* InputStream index */
220     AVStream *st;            /* stream in the output file */
221     int encoding_needed;     /* true if encoding needed for this stream */
222     int frame_number;
223     /* input pts and corresponding output pts
224        for A/V sync */
225     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
226     struct InputStream *sync_ist; /* input stream to sync against */
227     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
228     AVBitStreamFilterContext *bitstream_filters;
229     AVCodec *enc;
230     int64_t max_frames;
231
232     /* video only */
233     int video_resample;
234     AVFrame resample_frame;              /* temporary frame for image resampling */
235     struct SwsContext *img_resample_ctx; /* for image resampling */
236     int resample_height;
237     int resample_width;
238     int resample_pix_fmt;
239     AVRational frame_rate;
240
241     float frame_aspect_ratio;
242
243     /* forced key frames */
244     int64_t *forced_kf_pts;
245     int forced_kf_count;
246     int forced_kf_index;
247
248     /* audio only */
249     int audio_resample;
250     ReSampleContext *resample; /* for audio resampling */
251     int resample_sample_fmt;
252     int resample_channels;
253     int resample_sample_rate;
254     int reformat_pair;
255     AVAudioConvert *reformat_ctx;
256     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
257     FILE *logfile;
258
259 #if CONFIG_AVFILTER
260     AVFilterContext *output_video_filter;
261     AVFilterContext *input_video_filter;
262     AVFilterBufferRef *picref;
263     char *avfilter;
264     AVFilterGraph *graph;
265 #endif
266
267    int sws_flags;
268    AVDictionary *opts;
269    int is_past_recording_time;
270 } OutputStream;
271
272 #if HAVE_TERMIOS_H
273
274 /* init terminal so that we can grab keys */
275 static struct termios oldtty;
276 #endif
277
278 typedef struct OutputFile {
279     AVFormatContext *ctx;
280     AVDictionary *opts;
281     int ost_index;       /* index of the first stream in output_streams */
282     int64_t recording_time; /* desired length of the resulting file in microseconds */
283     int64_t start_time;     /* start time in microseconds */
284     uint64_t limit_filesize;
285 } OutputFile;
286
287 static InputStream *input_streams = NULL;
288 static int         nb_input_streams = 0;
289 static InputFile   *input_files   = NULL;
290 static int         nb_input_files   = 0;
291
292 static OutputStream *output_streams = NULL;
293 static int        nb_output_streams = 0;
294 static OutputFile   *output_files   = NULL;
295 static int        nb_output_files   = 0;
296
297 typedef struct OptionsContext {
298     /* input/output options */
299     int64_t start_time;
300     const char *format;
301
302     SpecifierOpt *codec_names;
303     int        nb_codec_names;
304     SpecifierOpt *audio_channels;
305     int        nb_audio_channels;
306
307     /* input options */
308     int64_t input_ts_offset;
309     int rate_emu;
310
311     SpecifierOpt *ts_scale;
312     int        nb_ts_scale;
313
314     /* output options */
315     StreamMap *stream_maps;
316     int     nb_stream_maps;
317     /* first item specifies output metadata, second is input */
318     MetadataMap (*meta_data_maps)[2];
319     int nb_meta_data_maps;
320     int metadata_global_manual;
321     int metadata_streams_manual;
322     int metadata_chapters_manual;
323
324     int chapters_input_file;
325
326     int64_t recording_time;
327     uint64_t limit_filesize;
328     float mux_preload;
329     float mux_max_delay;
330
331     int video_disable;
332     int audio_disable;
333     int subtitle_disable;
334     int data_disable;
335
336     SpecifierOpt *metadata;
337     int        nb_metadata;
338     SpecifierOpt *max_frames;
339     int        nb_max_frames;
340     SpecifierOpt *bitstream_filters;
341     int        nb_bitstream_filters;
342     SpecifierOpt *codec_tags;
343     int        nb_codec_tags;
344 } OptionsContext;
345
346 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
347 {\
348     int i, ret;\
349     for (i = 0; i < o->nb_ ## name; i++) {\
350         char *spec = o->name[i].specifier;\
351         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
352             outvar = o->name[i].u.type;\
353         else if (ret < 0)\
354             exit_program(1);\
355     }\
356 }
357
358 static void reset_options(OptionsContext *o)
359 {
360     const OptionDef *po = options;
361
362     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
363     while (po->name) {
364         void *dst = (uint8_t*)o + po->u.off;
365
366         if (po->flags & OPT_SPEC) {
367             SpecifierOpt **so = dst;
368             int i, *count = (int*)(so + 1);
369             for (i = 0; i < *count; i++) {
370                 av_freep(&(*so)[i].specifier);
371                 if (po->flags & OPT_STRING)
372                     av_freep(&(*so)[i].u.str);
373             }
374             av_freep(so);
375             *count = 0;
376         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
377             av_freep(dst);
378         po++;
379     }
380
381     av_freep(&o->stream_maps);
382     av_freep(&o->meta_data_maps);
383
384     memset(o, 0, sizeof(*o));
385
386     o->mux_preload    = 0.5;
387     o->mux_max_delay  = 0.7;
388     o->recording_time = INT64_MAX;
389     o->limit_filesize = UINT64_MAX;
390     o->chapters_input_file = INT_MAX;
391
392     uninit_opts();
393     init_opts();
394 }
395
396 #if CONFIG_AVFILTER
397
398 static int configure_video_filters(InputStream *ist, OutputStream *ost)
399 {
400     AVFilterContext *last_filter, *filter;
401     /** filter graph containing all filters including input & output */
402     AVCodecContext *codec = ost->st->codec;
403     AVCodecContext *icodec = ist->st->codec;
404     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
405     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
406     AVRational sample_aspect_ratio;
407     char args[255];
408     int ret;
409
410     ost->graph = avfilter_graph_alloc();
411
412     if (ist->st->sample_aspect_ratio.num){
413         sample_aspect_ratio = ist->st->sample_aspect_ratio;
414     }else
415         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
416
417     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
418              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
419              sample_aspect_ratio.num, sample_aspect_ratio.den);
420
421     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
422                                        "src", args, NULL, ost->graph);
423     if (ret < 0)
424         return ret;
425 #if FF_API_OLD_VSINK_API
426     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
427                                        "out", NULL, pix_fmts, ost->graph);
428 #else
429     buffersink_params->pixel_fmts = pix_fmts;
430     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
431                                        "out", NULL, buffersink_params, ost->graph);
432 #endif
433     av_freep(&buffersink_params);
434     if (ret < 0)
435         return ret;
436     last_filter = ost->input_video_filter;
437
438     if (codec->width  != icodec->width || codec->height != icodec->height) {
439         snprintf(args, 255, "%d:%d:flags=0x%X",
440                  codec->width,
441                  codec->height,
442                  ost->sws_flags);
443         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
444                                                 NULL, args, NULL, ost->graph)) < 0)
445             return ret;
446         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
447             return ret;
448         last_filter = filter;
449     }
450
451     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
452     ost->graph->scale_sws_opts = av_strdup(args);
453
454     if (ost->avfilter) {
455         AVFilterInOut *outputs = avfilter_inout_alloc();
456         AVFilterInOut *inputs  = avfilter_inout_alloc();
457
458         outputs->name    = av_strdup("in");
459         outputs->filter_ctx = last_filter;
460         outputs->pad_idx = 0;
461         outputs->next    = NULL;
462
463         inputs->name    = av_strdup("out");
464         inputs->filter_ctx = ost->output_video_filter;
465         inputs->pad_idx = 0;
466         inputs->next    = NULL;
467
468         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
469             return ret;
470         av_freep(&ost->avfilter);
471     } else {
472         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
473             return ret;
474     }
475
476     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
477         return ret;
478
479     codec->width  = ost->output_video_filter->inputs[0]->w;
480     codec->height = ost->output_video_filter->inputs[0]->h;
481     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
482         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
483         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
484         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
485
486     return 0;
487 }
488 #endif /* CONFIG_AVFILTER */
489
490 static void term_exit(void)
491 {
492     av_log(NULL, AV_LOG_QUIET, "%s", "");
493 #if HAVE_TERMIOS_H
494     if(!run_as_daemon)
495         tcsetattr (0, TCSANOW, &oldtty);
496 #endif
497 }
498
499 static volatile int received_sigterm = 0;
500
501 static void
502 sigterm_handler(int sig)
503 {
504     received_sigterm = sig;
505     q_pressed++;
506     term_exit();
507 }
508
509 static void term_init(void)
510 {
511 #if HAVE_TERMIOS_H
512     if(!run_as_daemon){
513     struct termios tty;
514
515     tcgetattr (0, &tty);
516     oldtty = tty;
517     atexit(term_exit);
518
519     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
520                           |INLCR|IGNCR|ICRNL|IXON);
521     tty.c_oflag |= OPOST;
522     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
523     tty.c_cflag &= ~(CSIZE|PARENB);
524     tty.c_cflag |= CS8;
525     tty.c_cc[VMIN] = 1;
526     tty.c_cc[VTIME] = 0;
527
528     tcsetattr (0, TCSANOW, &tty);
529     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
530     }
531 #endif
532
533     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
534     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
535 #ifdef SIGXCPU
536     signal(SIGXCPU, sigterm_handler);
537 #endif
538 }
539
540 /* read a key without blocking */
541 static int read_key(void)
542 {
543 #if HAVE_TERMIOS_H
544     int n = 1;
545     unsigned char ch;
546     struct timeval tv;
547     fd_set rfds;
548
549     if(run_as_daemon)
550         return -1;
551
552     FD_ZERO(&rfds);
553     FD_SET(0, &rfds);
554     tv.tv_sec = 0;
555     tv.tv_usec = 0;
556     n = select(1, &rfds, NULL, NULL, &tv);
557     if (n > 0) {
558         n = read(0, &ch, 1);
559         if (n == 1)
560             return ch;
561
562         return n;
563     }
564 #elif HAVE_KBHIT
565     if(kbhit())
566         return(getch());
567 #endif
568     return -1;
569 }
570
571 static int decode_interrupt_cb(void)
572 {
573     q_pressed += read_key() == 'q';
574     return q_pressed > 1;
575 }
576
577 void exit_program(int ret)
578 {
579     int i;
580
581     /* close files */
582     for(i=0;i<nb_output_files;i++) {
583         AVFormatContext *s = output_files[i].ctx;
584         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
585             avio_close(s->pb);
586         avformat_free_context(s);
587         av_dict_free(&output_files[i].opts);
588     }
589     for(i=0;i<nb_input_files;i++) {
590         av_close_input_file(input_files[i].ctx);
591     }
592     for (i = 0; i < nb_input_streams; i++)
593         av_dict_free(&input_streams[i].opts);
594
595     av_free(intra_matrix);
596     av_free(inter_matrix);
597
598     if (vstats_file)
599         fclose(vstats_file);
600     av_free(vstats_filename);
601
602     av_freep(&input_streams);
603     av_freep(&input_files);
604     av_freep(&output_streams);
605     av_freep(&output_files);
606
607     uninit_opts();
608     av_free(audio_buf);
609     av_free(audio_out);
610     allocated_audio_buf_size= allocated_audio_out_size= 0;
611     av_free(samples);
612
613 #if CONFIG_AVFILTER
614     avfilter_uninit();
615 #endif
616
617     if (received_sigterm) {
618         fprintf(stderr,
619             "Received signal %d: terminating.\n",
620             (int) received_sigterm);
621         exit (255);
622     }
623
624     exit(ret); /* not all OS-es handle main() return value */
625 }
626
627 static void assert_avoptions(AVDictionary *m)
628 {
629     AVDictionaryEntry *t;
630     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
631         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
632         exit_program(1);
633     }
634 }
635
636 static void assert_codec_experimental(AVCodecContext *c, int encoder)
637 {
638     const char *codec_string = encoder ? "encoder" : "decoder";
639     AVCodec *codec;
640     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
641         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
642         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
643                 "results.\nAdd '-strict experimental' if you want to use it.\n",
644                 codec_string, c->codec->name);
645         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
646         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
647             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
648                    codec_string, codec->name);
649         exit_program(1);
650     }
651 }
652
653 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
654 {
655     if(codec && codec->sample_fmts){
656         const enum AVSampleFormat *p= codec->sample_fmts;
657         for(; *p!=-1; p++){
658             if(*p == st->codec->sample_fmt)
659                 break;
660         }
661         if (*p == -1) {
662             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
663                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
664             if(av_get_sample_fmt_name(st->codec->sample_fmt))
665             av_log(NULL, AV_LOG_WARNING,
666                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
667                    av_get_sample_fmt_name(st->codec->sample_fmt),
668                    codec->name,
669                    av_get_sample_fmt_name(codec->sample_fmts[0]));
670             st->codec->sample_fmt = codec->sample_fmts[0];
671         }
672     }
673 }
674
675 static void choose_sample_rate(AVStream *st, AVCodec *codec)
676 {
677     if(codec && codec->supported_samplerates){
678         const int *p= codec->supported_samplerates;
679         int best=0;
680         int best_dist=INT_MAX;
681         for(; *p; p++){
682             int dist= abs(st->codec->sample_rate - *p);
683             if(dist < best_dist){
684                 best_dist= dist;
685                 best= *p;
686             }
687         }
688         if(best_dist){
689             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
690         }
691         st->codec->sample_rate= best;
692     }
693 }
694
695 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
696 {
697     if(codec && codec->pix_fmts){
698         const enum PixelFormat *p= codec->pix_fmts;
699         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
700             if(st->codec->codec_id==CODEC_ID_MJPEG){
701                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
702             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
703                 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};
704             }
705         }
706         for(; *p!=-1; p++){
707             if(*p == st->codec->pix_fmt)
708                 break;
709         }
710         if (*p == -1) {
711             if(st->codec->pix_fmt != PIX_FMT_NONE)
712                 av_log(NULL, AV_LOG_WARNING,
713                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
714                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
715                         codec->name,
716                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
717             st->codec->pix_fmt = codec->pix_fmts[0];
718         }
719     }
720 }
721
722 static double
723 get_sync_ipts(const OutputStream *ost)
724 {
725     const InputStream *ist = ost->sync_ist;
726     OutputFile *of = &output_files[ost->file_index];
727     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
728 }
729
730 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
731     int ret;
732
733     while(bsfc){
734         AVPacket new_pkt= *pkt;
735         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
736                                           &new_pkt.data, &new_pkt.size,
737                                           pkt->data, pkt->size,
738                                           pkt->flags & AV_PKT_FLAG_KEY);
739         if(a>0){
740             av_free_packet(pkt);
741             new_pkt.destruct= av_destruct_packet;
742         } else if(a<0){
743             fprintf(stderr, "%s failed for stream %d, codec %s",
744                     bsfc->filter->name, pkt->stream_index,
745                     avctx->codec ? avctx->codec->name : "copy");
746             print_error("", a);
747             if (exit_on_error)
748                 exit_program(1);
749         }
750         *pkt= new_pkt;
751
752         bsfc= bsfc->next;
753     }
754
755     ret= av_interleaved_write_frame(s, pkt);
756     if(ret < 0){
757         print_error("av_interleaved_write_frame()", ret);
758         exit_program(1);
759     }
760 }
761
762 static void do_audio_out(AVFormatContext *s,
763                          OutputStream *ost,
764                          InputStream *ist,
765                          unsigned char *buf, int size)
766 {
767     uint8_t *buftmp;
768     int64_t audio_out_size, audio_buf_size;
769     int64_t allocated_for_size= size;
770
771     int size_out, frame_bytes, ret, resample_changed;
772     AVCodecContext *enc= ost->st->codec;
773     AVCodecContext *dec= ist->st->codec;
774     int osize = av_get_bytes_per_sample(enc->sample_fmt);
775     int isize = av_get_bytes_per_sample(dec->sample_fmt);
776     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
777
778 need_realloc:
779     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
780     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
781     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
782     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
783     audio_buf_size*= osize*enc->channels;
784
785     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
786     if(coded_bps > 8*osize)
787         audio_out_size= audio_out_size * coded_bps / (8*osize);
788     audio_out_size += FF_MIN_BUFFER_SIZE;
789
790     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
791         fprintf(stderr, "Buffer sizes too large\n");
792         exit_program(1);
793     }
794
795     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
796     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
797     if (!audio_buf || !audio_out){
798         fprintf(stderr, "Out of memory in do_audio_out\n");
799         exit_program(1);
800     }
801
802     if (enc->channels != dec->channels)
803         ost->audio_resample = 1;
804
805     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
806                        ost->resample_channels    != dec->channels   ||
807                        ost->resample_sample_rate != dec->sample_rate;
808
809     if ((ost->audio_resample && !ost->resample) || resample_changed) {
810         if (resample_changed) {
811             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",
812                    ist->file_index, ist->st->index,
813                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
814                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
815             ost->resample_sample_fmt  = dec->sample_fmt;
816             ost->resample_channels    = dec->channels;
817             ost->resample_sample_rate = dec->sample_rate;
818             if (ost->resample)
819                 audio_resample_close(ost->resample);
820         }
821         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
822         if (audio_sync_method <= 1 &&
823             ost->resample_sample_fmt  == enc->sample_fmt &&
824             ost->resample_channels    == enc->channels   &&
825             ost->resample_sample_rate == enc->sample_rate) {
826             ost->resample = NULL;
827             ost->audio_resample = 0;
828         } else {
829             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
830                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
831             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
832                                                    enc->sample_rate, dec->sample_rate,
833                                                    enc->sample_fmt,  dec->sample_fmt,
834                                                    16, 10, 0, 0.8);
835             if (!ost->resample) {
836                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
837                         dec->channels, dec->sample_rate,
838                         enc->channels, enc->sample_rate);
839                 exit_program(1);
840             }
841         }
842     }
843
844 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
845     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
846         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
847         if (ost->reformat_ctx)
848             av_audio_convert_free(ost->reformat_ctx);
849         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
850                                                    dec->sample_fmt, 1, NULL, 0);
851         if (!ost->reformat_ctx) {
852             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
853                 av_get_sample_fmt_name(dec->sample_fmt),
854                 av_get_sample_fmt_name(enc->sample_fmt));
855             exit_program(1);
856         }
857         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
858     }
859
860     if(audio_sync_method){
861         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
862                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
863         double idelta= delta*dec->sample_rate / enc->sample_rate;
864         int byte_delta= ((int)idelta)*2*dec->channels;
865
866         //FIXME resample delay
867         if(fabs(delta) > 50){
868             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
869                 if(byte_delta < 0){
870                     byte_delta= FFMAX(byte_delta, -size);
871                     size += byte_delta;
872                     buf  -= byte_delta;
873                     if(verbose > 2)
874                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
875                     if(!size)
876                         return;
877                     ist->is_start=0;
878                 }else{
879                     static uint8_t *input_tmp= NULL;
880                     input_tmp= av_realloc(input_tmp, byte_delta + size);
881
882                     if(byte_delta > allocated_for_size - size){
883                         allocated_for_size= byte_delta + (int64_t)size;
884                         goto need_realloc;
885                     }
886                     ist->is_start=0;
887
888                     memset(input_tmp, 0, byte_delta);
889                     memcpy(input_tmp + byte_delta, buf, size);
890                     buf= input_tmp;
891                     size += byte_delta;
892                     if(verbose > 2)
893                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
894                 }
895             }else if(audio_sync_method>1){
896                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
897                 av_assert0(ost->audio_resample);
898                 if(verbose > 2)
899                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
900 //                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));
901                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
902             }
903         }
904     }else
905         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
906                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
907
908     if (ost->audio_resample) {
909         buftmp = audio_buf;
910         size_out = audio_resample(ost->resample,
911                                   (short *)buftmp, (short *)buf,
912                                   size / (dec->channels * isize));
913         size_out = size_out * enc->channels * osize;
914     } else {
915         buftmp = buf;
916         size_out = size;
917     }
918
919     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
920         const void *ibuf[6]= {buftmp};
921         void *obuf[6]= {audio_buf};
922         int istride[6]= {isize};
923         int ostride[6]= {osize};
924         int len= size_out/istride[0];
925         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
926             printf("av_audio_convert() failed\n");
927             if (exit_on_error)
928                 exit_program(1);
929             return;
930         }
931         buftmp = audio_buf;
932         size_out = len*osize;
933     }
934
935     /* now encode as many frames as possible */
936     if (enc->frame_size > 1) {
937         /* output resampled raw samples */
938         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
939             fprintf(stderr, "av_fifo_realloc2() failed\n");
940             exit_program(1);
941         }
942         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
943
944         frame_bytes = enc->frame_size * osize * enc->channels;
945
946         while (av_fifo_size(ost->fifo) >= frame_bytes) {
947             AVPacket pkt;
948             av_init_packet(&pkt);
949
950             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
951
952             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
953
954             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
955                                        (short *)audio_buf);
956             if (ret < 0) {
957                 fprintf(stderr, "Audio encoding failed\n");
958                 exit_program(1);
959             }
960             audio_size += ret;
961             pkt.stream_index= ost->index;
962             pkt.data= audio_out;
963             pkt.size= ret;
964             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
965                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
966             pkt.flags |= AV_PKT_FLAG_KEY;
967             write_frame(s, &pkt, enc, ost->bitstream_filters);
968
969             ost->sync_opts += enc->frame_size;
970         }
971     } else {
972         AVPacket pkt;
973         av_init_packet(&pkt);
974
975         ost->sync_opts += size_out / (osize * enc->channels);
976
977         /* output a pcm frame */
978         /* determine the size of the coded buffer */
979         size_out /= osize;
980         if (coded_bps)
981             size_out = size_out*coded_bps/8;
982
983         if(size_out > audio_out_size){
984             fprintf(stderr, "Internal error, buffer size too small\n");
985             exit_program(1);
986         }
987
988         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
989         ret = avcodec_encode_audio(enc, audio_out, size_out,
990                                    (short *)buftmp);
991         if (ret < 0) {
992             fprintf(stderr, "Audio encoding failed\n");
993             exit_program(1);
994         }
995         audio_size += ret;
996         pkt.stream_index= ost->index;
997         pkt.data= audio_out;
998         pkt.size= ret;
999         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1000             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1001         pkt.flags |= AV_PKT_FLAG_KEY;
1002         write_frame(s, &pkt, enc, ost->bitstream_filters);
1003     }
1004 }
1005
1006 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1007 {
1008     AVCodecContext *dec;
1009     AVPicture *picture2;
1010     AVPicture picture_tmp;
1011     uint8_t *buf = 0;
1012
1013     dec = ist->st->codec;
1014
1015     /* deinterlace : must be done before any resize */
1016     if (do_deinterlace) {
1017         int size;
1018
1019         /* create temporary picture */
1020         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1021         buf = av_malloc(size);
1022         if (!buf)
1023             return;
1024
1025         picture2 = &picture_tmp;
1026         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1027
1028         if(avpicture_deinterlace(picture2, picture,
1029                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1030             /* if error, do not deinterlace */
1031             fprintf(stderr, "Deinterlacing failed\n");
1032             av_free(buf);
1033             buf = NULL;
1034             picture2 = picture;
1035         }
1036     } else {
1037         picture2 = picture;
1038     }
1039
1040     if (picture != picture2)
1041         *picture = *picture2;
1042     *bufp = buf;
1043 }
1044
1045 static void do_subtitle_out(AVFormatContext *s,
1046                             OutputStream *ost,
1047                             InputStream *ist,
1048                             AVSubtitle *sub,
1049                             int64_t pts)
1050 {
1051     static uint8_t *subtitle_out = NULL;
1052     int subtitle_out_max_size = 1024 * 1024;
1053     int subtitle_out_size, nb, i;
1054     AVCodecContext *enc;
1055     AVPacket pkt;
1056
1057     if (pts == AV_NOPTS_VALUE) {
1058         fprintf(stderr, "Subtitle packets must have a pts\n");
1059         if (exit_on_error)
1060             exit_program(1);
1061         return;
1062     }
1063
1064     enc = ost->st->codec;
1065
1066     if (!subtitle_out) {
1067         subtitle_out = av_malloc(subtitle_out_max_size);
1068     }
1069
1070     /* Note: DVB subtitle need one packet to draw them and one other
1071        packet to clear them */
1072     /* XXX: signal it in the codec context ? */
1073     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1074         nb = 2;
1075     else
1076         nb = 1;
1077
1078     for(i = 0; i < nb; i++) {
1079         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1080         // start_display_time is required to be 0
1081         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1082         sub->end_display_time -= sub->start_display_time;
1083         sub->start_display_time = 0;
1084         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1085                                                     subtitle_out_max_size, sub);
1086         if (subtitle_out_size < 0) {
1087             fprintf(stderr, "Subtitle encoding failed\n");
1088             exit_program(1);
1089         }
1090
1091         av_init_packet(&pkt);
1092         pkt.stream_index = ost->index;
1093         pkt.data = subtitle_out;
1094         pkt.size = subtitle_out_size;
1095         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1096         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1097             /* XXX: the pts correction is handled here. Maybe handling
1098                it in the codec would be better */
1099             if (i == 0)
1100                 pkt.pts += 90 * sub->start_display_time;
1101             else
1102                 pkt.pts += 90 * sub->end_display_time;
1103         }
1104         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1105     }
1106 }
1107
1108 static int bit_buffer_size= 1024*256;
1109 static uint8_t *bit_buffer= NULL;
1110
1111 static void do_video_resample(OutputStream *ost,
1112                               InputStream *ist,
1113                               AVFrame *in_picture,
1114                               AVFrame **out_picture)
1115 {
1116     int resample_changed = 0;
1117     AVCodecContext *dec = ist->st->codec;
1118     AVCodecContext *enc = ost->st->codec;
1119     *out_picture = in_picture;
1120
1121     resample_changed = ost->resample_width   != dec->width  ||
1122                        ost->resample_height  != dec->height ||
1123                        ost->resample_pix_fmt != dec->pix_fmt;
1124
1125 #if !CONFIG_AVFILTER
1126     if (resample_changed) {
1127         av_log(NULL, AV_LOG_INFO,
1128                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1129                ist->file_index, ist->st->index,
1130                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1131                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1132         ost->resample_width   = dec->width;
1133         ost->resample_height  = dec->height;
1134         ost->resample_pix_fmt = dec->pix_fmt;
1135     }
1136
1137     ost->video_resample = dec->width   != enc->width  ||
1138                           dec->height  != enc->height ||
1139                           dec->pix_fmt != enc->pix_fmt;
1140
1141     if (ost->video_resample) {
1142         *out_picture = &ost->resample_frame;
1143         if (!ost->img_resample_ctx || resample_changed) {
1144             /* initialize the destination picture */
1145             if (!ost->resample_frame.data[0]) {
1146                 avcodec_get_frame_defaults(&ost->resample_frame);
1147                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1148                                     enc->width, enc->height)) {
1149                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1150                     exit_program(1);
1151                 }
1152             }
1153             /* initialize a new scaler context */
1154             sws_freeContext(ost->img_resample_ctx);
1155             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1156                                                    enc->width, enc->height, enc->pix_fmt,
1157                                                    ost->sws_flags, NULL, NULL, NULL);
1158             if (ost->img_resample_ctx == NULL) {
1159                 fprintf(stderr, "Cannot get resampling context\n");
1160                 exit_program(1);
1161             }
1162         }
1163         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1164               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1165     }
1166 #else
1167     if (resample_changed) {
1168         avfilter_graph_free(&ost->graph);
1169         if (configure_video_filters(ist, ost)) {
1170             fprintf(stderr, "Error reinitializing filters!\n");
1171             exit_program(1);
1172         }
1173     }
1174 #endif
1175     if (resample_changed) {
1176         ost->resample_width   = dec->width;
1177         ost->resample_height  = dec->height;
1178         ost->resample_pix_fmt = dec->pix_fmt;
1179     }
1180 }
1181
1182
1183 static void do_video_out(AVFormatContext *s,
1184                          OutputStream *ost,
1185                          InputStream *ist,
1186                          AVFrame *in_picture,
1187                          int *frame_size, float quality)
1188 {
1189     int nb_frames, i, ret, format_video_sync;
1190     AVFrame *final_picture;
1191     AVCodecContext *enc;
1192     double sync_ipts;
1193
1194     enc = ost->st->codec;
1195
1196     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1197
1198     /* by default, we output a single frame */
1199     nb_frames = 1;
1200
1201     *frame_size = 0;
1202
1203     format_video_sync = video_sync_method;
1204     if (format_video_sync < 0)
1205         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1206
1207     if (format_video_sync) {
1208         double vdelta = sync_ipts - ost->sync_opts;
1209         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1210         if (vdelta < -1.1)
1211             nb_frames = 0;
1212         else if (format_video_sync == 2) {
1213             if(vdelta<=-0.6){
1214                 nb_frames=0;
1215             }else if(vdelta>0.6)
1216                 ost->sync_opts= lrintf(sync_ipts);
1217         }else if (vdelta > 1.1)
1218             nb_frames = lrintf(vdelta);
1219 //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);
1220         if (nb_frames == 0){
1221             ++nb_frames_drop;
1222             if (verbose>2)
1223                 fprintf(stderr, "*** drop!\n");
1224         }else if (nb_frames > 1) {
1225             nb_frames_dup += nb_frames - 1;
1226             if (verbose>2)
1227                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1228         }
1229     }else
1230         ost->sync_opts= lrintf(sync_ipts);
1231
1232     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1233     if (nb_frames <= 0)
1234         return;
1235
1236     do_video_resample(ost, ist, in_picture, &final_picture);
1237
1238     /* duplicates frame if needed */
1239     for(i=0;i<nb_frames;i++) {
1240         AVPacket pkt;
1241         av_init_packet(&pkt);
1242         pkt.stream_index= ost->index;
1243
1244         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1245             /* raw pictures are written as AVPicture structure to
1246                avoid any copies. We support temporarily the older
1247                method. */
1248             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1249             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1250             pkt.data= (uint8_t *)final_picture;
1251             pkt.size=  sizeof(AVPicture);
1252             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1253             pkt.flags |= AV_PKT_FLAG_KEY;
1254
1255             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1256         } else {
1257             AVFrame big_picture;
1258
1259             big_picture= *final_picture;
1260             /* better than nothing: use input picture interlaced
1261                settings */
1262             big_picture.interlaced_frame = in_picture->interlaced_frame;
1263             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1264                 if(top_field_first == -1)
1265                     big_picture.top_field_first = in_picture->top_field_first;
1266                 else
1267                     big_picture.top_field_first = top_field_first;
1268             }
1269
1270             /* handles same_quant here. This is not correct because it may
1271                not be a global option */
1272             big_picture.quality = quality;
1273             if(!me_threshold)
1274                 big_picture.pict_type = 0;
1275 //            big_picture.pts = AV_NOPTS_VALUE;
1276             big_picture.pts= ost->sync_opts;
1277 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1278 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1279             if (ost->forced_kf_index < ost->forced_kf_count &&
1280                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1281                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1282                 ost->forced_kf_index++;
1283             }
1284             ret = avcodec_encode_video(enc,
1285                                        bit_buffer, bit_buffer_size,
1286                                        &big_picture);
1287             if (ret < 0) {
1288                 fprintf(stderr, "Video encoding failed\n");
1289                 exit_program(1);
1290             }
1291
1292             if(ret>0){
1293                 pkt.data= bit_buffer;
1294                 pkt.size= ret;
1295                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1296                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1297 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1298    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1299    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1300
1301                 if(enc->coded_frame->key_frame)
1302                     pkt.flags |= AV_PKT_FLAG_KEY;
1303                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1304                 *frame_size = ret;
1305                 video_size += ret;
1306                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1307                 //        enc->frame_number-1, ret, enc->pict_type);
1308                 /* if two pass, output log */
1309                 if (ost->logfile && enc->stats_out) {
1310                     fprintf(ost->logfile, "%s", enc->stats_out);
1311                 }
1312             }
1313         }
1314         ost->sync_opts++;
1315         ost->frame_number++;
1316     }
1317 }
1318
1319 static double psnr(double d){
1320     return -10.0*log(d)/log(10.0);
1321 }
1322
1323 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1324                            int frame_size)
1325 {
1326     AVCodecContext *enc;
1327     int frame_number;
1328     double ti1, bitrate, avg_bitrate;
1329
1330     /* this is executed just the first time do_video_stats is called */
1331     if (!vstats_file) {
1332         vstats_file = fopen(vstats_filename, "w");
1333         if (!vstats_file) {
1334             perror("fopen");
1335             exit_program(1);
1336         }
1337     }
1338
1339     enc = ost->st->codec;
1340     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1341         frame_number = ost->frame_number;
1342         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1343         if (enc->flags&CODEC_FLAG_PSNR)
1344             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1345
1346         fprintf(vstats_file,"f_size= %6d ", frame_size);
1347         /* compute pts value */
1348         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1349         if (ti1 < 0.01)
1350             ti1 = 0.01;
1351
1352         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1353         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1354         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1355             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1356         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1357     }
1358 }
1359
1360 static void print_report(OutputFile *output_files,
1361                          OutputStream *ost_table, int nb_ostreams,
1362                          int is_last_report, int64_t timer_start)
1363 {
1364     char buf[1024];
1365     OutputStream *ost;
1366     AVFormatContext *oc;
1367     int64_t total_size;
1368     AVCodecContext *enc;
1369     int frame_number, vid, i;
1370     double bitrate;
1371     int64_t pts = INT64_MAX;
1372     static int64_t last_time = -1;
1373     static int qp_histogram[52];
1374
1375     if (!is_last_report) {
1376         int64_t cur_time;
1377         /* display the report every 0.5 seconds */
1378         cur_time = av_gettime();
1379         if (last_time == -1) {
1380             last_time = cur_time;
1381             return;
1382         }
1383         if ((cur_time - last_time) < 500000)
1384             return;
1385         last_time = cur_time;
1386     }
1387
1388
1389     oc = output_files[0].ctx;
1390
1391     total_size = avio_size(oc->pb);
1392     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1393         total_size= avio_tell(oc->pb);
1394
1395     buf[0] = '\0';
1396     vid = 0;
1397     for(i=0;i<nb_ostreams;i++) {
1398         float q = -1;
1399         ost = &ost_table[i];
1400         enc = ost->st->codec;
1401         if (!ost->st->stream_copy && enc->coded_frame)
1402             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1403         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1404             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1405         }
1406         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1407             float t = (av_gettime()-timer_start) / 1000000.0;
1408
1409             frame_number = ost->frame_number;
1410             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1411                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1412             if(is_last_report)
1413                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1414             if(qp_hist){
1415                 int j;
1416                 int qp = lrintf(q);
1417                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1418                     qp_histogram[qp]++;
1419                 for(j=0; j<32; j++)
1420                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1421             }
1422             if (enc->flags&CODEC_FLAG_PSNR){
1423                 int j;
1424                 double error, error_sum=0;
1425                 double scale, scale_sum=0;
1426                 char type[3]= {'Y','U','V'};
1427                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1428                 for(j=0; j<3; j++){
1429                     if(is_last_report){
1430                         error= enc->error[j];
1431                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1432                     }else{
1433                         error= enc->coded_frame->error[j];
1434                         scale= enc->width*enc->height*255.0*255.0;
1435                     }
1436                     if(j) scale/=4;
1437                     error_sum += error;
1438                     scale_sum += scale;
1439                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1440                 }
1441                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1442             }
1443             vid = 1;
1444         }
1445         /* compute min output value */
1446         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1447                                       ost->st->time_base, AV_TIME_BASE_Q));
1448     }
1449
1450     if (verbose > 0 || is_last_report) {
1451         int hours, mins, secs, us;
1452         secs = pts / AV_TIME_BASE;
1453         us = pts % AV_TIME_BASE;
1454         mins = secs / 60;
1455         secs %= 60;
1456         hours = mins / 60;
1457         mins %= 60;
1458
1459         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1460
1461         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1462                  "size=%8.0fkB time=", total_size / 1024.0);
1463         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1464                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1465                  (100 * us) / AV_TIME_BASE);
1466         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1467                  "bitrate=%6.1fkbits/s", bitrate);
1468
1469         if (nb_frames_dup || nb_frames_drop)
1470           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1471                   nb_frames_dup, nb_frames_drop);
1472
1473         if (verbose >= 0)
1474             fprintf(stderr, "%s    \r", buf);
1475
1476         fflush(stderr);
1477     }
1478
1479     if (is_last_report && verbose >= 0){
1480         int64_t raw= audio_size + video_size + extra_size;
1481         fprintf(stderr, "\n");
1482         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1483                 video_size/1024.0,
1484                 audio_size/1024.0,
1485                 extra_size/1024.0,
1486                 100.0*(total_size - raw)/raw
1487         );
1488     }
1489 }
1490
1491 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1492 {
1493     int fill_char = 0x00;
1494     if (sample_fmt == AV_SAMPLE_FMT_U8)
1495         fill_char = 0x80;
1496     memset(buf, fill_char, size);
1497 }
1498
1499 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1500 {
1501     int i, ret;
1502
1503     for (i = 0; i < nb_ostreams; i++) {
1504         OutputStream   *ost = &ost_table[i];
1505         AVCodecContext *enc = ost->st->codec;
1506         AVFormatContext *os = output_files[ost->file_index].ctx;
1507
1508         if (!ost->encoding_needed)
1509             continue;
1510
1511         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1512             continue;
1513         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1514             continue;
1515
1516         for(;;) {
1517             AVPacket pkt;
1518             int fifo_bytes;
1519             av_init_packet(&pkt);
1520             pkt.stream_index= ost->index;
1521
1522             switch (ost->st->codec->codec_type) {
1523             case AVMEDIA_TYPE_AUDIO:
1524                 fifo_bytes = av_fifo_size(ost->fifo);
1525                 ret = 0;
1526                 /* encode any samples remaining in fifo */
1527                 if (fifo_bytes > 0) {
1528                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1529                     int fs_tmp = enc->frame_size;
1530
1531                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1532                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1533                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1534                     } else { /* pad */
1535                         int frame_bytes = enc->frame_size*osize*enc->channels;
1536                         if (allocated_audio_buf_size < frame_bytes)
1537                             exit_program(1);
1538                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1539                     }
1540
1541                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1542                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1543                                               ost->st->time_base.num, enc->sample_rate);
1544                     enc->frame_size = fs_tmp;
1545                 }
1546                 if (ret <= 0) {
1547                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1548                 }
1549                 if (ret < 0) {
1550                     fprintf(stderr, "Audio encoding failed\n");
1551                     exit_program(1);
1552                 }
1553                 audio_size += ret;
1554                 pkt.flags |= AV_PKT_FLAG_KEY;
1555                 break;
1556             case AVMEDIA_TYPE_VIDEO:
1557                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1558                 if (ret < 0) {
1559                     fprintf(stderr, "Video encoding failed\n");
1560                     exit_program(1);
1561                 }
1562                 video_size += ret;
1563                 if(enc->coded_frame && enc->coded_frame->key_frame)
1564                     pkt.flags |= AV_PKT_FLAG_KEY;
1565                 if (ost->logfile && enc->stats_out) {
1566                     fprintf(ost->logfile, "%s", enc->stats_out);
1567                 }
1568                 break;
1569             default:
1570                 ret=-1;
1571             }
1572
1573             if (ret <= 0)
1574                 break;
1575             pkt.data = bit_buffer;
1576             pkt.size = ret;
1577             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1578                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1579             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1580         }
1581     }
1582 }
1583
1584 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1585 static int output_packet(InputStream *ist, int ist_index,
1586                          OutputStream *ost_table, int nb_ostreams,
1587                          const AVPacket *pkt)
1588 {
1589     AVFormatContext *os;
1590     OutputStream *ost;
1591     int ret, i;
1592     int got_output;
1593     AVFrame picture;
1594     void *buffer_to_free = NULL;
1595     static unsigned int samples_size= 0;
1596     AVSubtitle subtitle, *subtitle_to_free;
1597     int64_t pkt_pts = AV_NOPTS_VALUE;
1598 #if CONFIG_AVFILTER
1599     int frame_available;
1600 #endif
1601     float quality;
1602
1603     AVPacket avpkt;
1604     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1605
1606     if(ist->next_pts == AV_NOPTS_VALUE)
1607         ist->next_pts= ist->pts;
1608
1609     if (pkt == NULL) {
1610         /* EOF handling */
1611         av_init_packet(&avpkt);
1612         avpkt.data = NULL;
1613         avpkt.size = 0;
1614         goto handle_eof;
1615     } else {
1616         avpkt = *pkt;
1617     }
1618
1619     if(pkt->dts != AV_NOPTS_VALUE)
1620         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1621     if(pkt->pts != AV_NOPTS_VALUE)
1622         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1623
1624     //while we have more to decode or while the decoder did output something on EOF
1625     while (avpkt.size > 0 || (!pkt && got_output)) {
1626         uint8_t *data_buf, *decoded_data_buf;
1627         int data_size, decoded_data_size;
1628     handle_eof:
1629         ist->pts= ist->next_pts;
1630
1631         if(avpkt.size && avpkt.size != pkt->size &&
1632            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1633             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1634             ist->showed_multi_packet_warning=1;
1635         }
1636
1637         /* decode the packet if needed */
1638         decoded_data_buf = NULL; /* fail safe */
1639         decoded_data_size= 0;
1640         data_buf  = avpkt.data;
1641         data_size = avpkt.size;
1642         subtitle_to_free = NULL;
1643         if (ist->decoding_needed) {
1644             switch(ist->st->codec->codec_type) {
1645             case AVMEDIA_TYPE_AUDIO:{
1646                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1647                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1648                     av_free(samples);
1649                     samples= av_malloc(samples_size);
1650                 }
1651                 decoded_data_size= samples_size;
1652                     /* XXX: could avoid copy if PCM 16 bits with same
1653                        endianness as CPU */
1654                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1655                                             &avpkt);
1656                 if (ret < 0)
1657                     return ret;
1658                 avpkt.data += ret;
1659                 avpkt.size -= ret;
1660                 data_size   = ret;
1661                 got_output  = decoded_data_size > 0;
1662                 /* Some bug in mpeg audio decoder gives */
1663                 /* decoded_data_size < 0, it seems they are overflows */
1664                 if (!got_output) {
1665                     /* no audio frame */
1666                     continue;
1667                 }
1668                 decoded_data_buf = (uint8_t *)samples;
1669                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1670                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1671                 break;}
1672             case AVMEDIA_TYPE_VIDEO:
1673                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1674                     /* XXX: allocate picture correctly */
1675                     avcodec_get_frame_defaults(&picture);
1676                     avpkt.pts = pkt_pts;
1677                     avpkt.dts = ist->pts;
1678                     pkt_pts = AV_NOPTS_VALUE;
1679
1680                     ret = avcodec_decode_video2(ist->st->codec,
1681                                                 &picture, &got_output, &avpkt);
1682                     quality = same_quant ? picture.quality : 0;
1683                     if (ret < 0)
1684                         return ret;
1685                     if (!got_output) {
1686                         /* no picture yet */
1687                         goto discard_packet;
1688                     }
1689                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1690                     if (ist->st->codec->time_base.num != 0) {
1691                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1692                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1693                                           ist->st->codec->time_base.num * ticks) /
1694                             ist->st->codec->time_base.den;
1695                     }
1696                     avpkt.size = 0;
1697                     buffer_to_free = NULL;
1698                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1699                     break;
1700             case AVMEDIA_TYPE_SUBTITLE:
1701                 ret = avcodec_decode_subtitle2(ist->st->codec,
1702                                                &subtitle, &got_output, &avpkt);
1703                 if (ret < 0)
1704                     return ret;
1705                 if (!got_output) {
1706                     goto discard_packet;
1707                 }
1708                 subtitle_to_free = &subtitle;
1709                 avpkt.size = 0;
1710                 break;
1711             default:
1712                 return -1;
1713             }
1714         } else {
1715             switch(ist->st->codec->codec_type) {
1716             case AVMEDIA_TYPE_AUDIO:
1717                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1718                     ist->st->codec->sample_rate;
1719                 break;
1720             case AVMEDIA_TYPE_VIDEO:
1721                 if (ist->st->codec->time_base.num != 0) {
1722                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1723                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1724                                       ist->st->codec->time_base.num * ticks) /
1725                         ist->st->codec->time_base.den;
1726                 }
1727                 break;
1728             }
1729             avpkt.size = 0;
1730         }
1731
1732         // preprocess audio (volume)
1733         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1734             if (audio_volume != 256) {
1735                 short *volp;
1736                 volp = samples;
1737                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1738                     int v = ((*volp) * audio_volume + 128) >> 8;
1739                     *volp++ = av_clip_int16(v);
1740                 }
1741             }
1742         }
1743
1744         /* frame rate emulation */
1745         if (input_files[ist->file_index].rate_emu) {
1746             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1747             int64_t now = av_gettime() - ist->start;
1748             if (pts > now)
1749                 usleep(pts - now);
1750         }
1751         /* if output time reached then transcode raw format,
1752            encode packets and output them */
1753         for (i = 0; i < nb_ostreams; i++) {
1754             OutputFile *of = &output_files[ost_table[i].file_index];
1755             int frame_size;
1756
1757             ost = &ost_table[i];
1758             if (ost->source_index != ist_index)
1759                 continue;
1760
1761             if (of->start_time && ist->pts < of->start_time)
1762                 continue;
1763
1764             if (of->recording_time != INT64_MAX &&
1765                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1766                               (AVRational){1, 1000000}) >= 0) {
1767                 ost->is_past_recording_time = 1;
1768                 continue;
1769             }
1770
1771 #if CONFIG_AVFILTER
1772             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1773                 ost->input_video_filter) {
1774                 if (!picture.sample_aspect_ratio.num)
1775                     picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1776                 picture.pts = ist->pts;
1777
1778                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1779             }
1780             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1781                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1782             while (frame_available) {
1783                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1784                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1785                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1786                         goto cont;
1787                     if (ost->picref) {
1788                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1789                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1790                     }
1791                 }
1792 #endif
1793                 os = output_files[ost->file_index].ctx;
1794
1795                 /* set the input output pts pairs */
1796                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1797
1798                 if (ost->encoding_needed) {
1799                     av_assert0(ist->decoding_needed);
1800                     switch(ost->st->codec->codec_type) {
1801                     case AVMEDIA_TYPE_AUDIO:
1802                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1803                         break;
1804                     case AVMEDIA_TYPE_VIDEO:
1805 #if CONFIG_AVFILTER
1806                         if (ost->picref->video && !ost->frame_aspect_ratio)
1807                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1808 #endif
1809                         do_video_out(os, ost, ist, &picture, &frame_size,
1810                                         same_quant ? quality : ost->st->codec->global_quality);
1811                         if (vstats_filename && frame_size)
1812                             do_video_stats(os, ost, frame_size);
1813                         break;
1814                     case AVMEDIA_TYPE_SUBTITLE:
1815                         do_subtitle_out(os, ost, ist, &subtitle,
1816                                         pkt->pts);
1817                         break;
1818                     default:
1819                         abort();
1820                     }
1821                 } else {
1822                     AVFrame avframe; //FIXME/XXX remove this
1823                     AVPicture pict;
1824                     AVPacket opkt;
1825                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1826                     av_init_packet(&opkt);
1827
1828                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1829 #if !CONFIG_AVFILTER
1830                         continue;
1831 #else
1832                         goto cont;
1833 #endif
1834
1835                     /* no reencoding needed : output the packet directly */
1836                     /* force the input stream PTS */
1837
1838                     avcodec_get_frame_defaults(&avframe);
1839                     ost->st->codec->coded_frame= &avframe;
1840                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1841
1842                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1843                         audio_size += data_size;
1844                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1845                         video_size += data_size;
1846                         ost->sync_opts++;
1847                     }
1848
1849                     opkt.stream_index= ost->index;
1850                     if(pkt->pts != AV_NOPTS_VALUE)
1851                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1852                     else
1853                         opkt.pts= AV_NOPTS_VALUE;
1854
1855                     if (pkt->dts == AV_NOPTS_VALUE)
1856                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1857                     else
1858                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1859                     opkt.dts -= ost_tb_start_time;
1860
1861                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1862                     opkt.flags= pkt->flags;
1863
1864                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1865                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1866                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1867                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1868                        ) {
1869                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1870                             opkt.destruct= av_destruct_packet;
1871                     } else {
1872                         opkt.data = data_buf;
1873                         opkt.size = data_size;
1874                     }
1875
1876                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1877                         /* store AVPicture in AVPacket, as expected by the output format */
1878                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1879                         opkt.data = (uint8_t *)&pict;
1880                         opkt.size = sizeof(AVPicture);
1881                         opkt.flags |= AV_PKT_FLAG_KEY;
1882                     }
1883                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1884                     ost->st->codec->frame_number++;
1885                     ost->frame_number++;
1886                     av_free_packet(&opkt);
1887                 }
1888 #if CONFIG_AVFILTER
1889                 cont:
1890                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1891                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1892                 if (ost->picref)
1893                     avfilter_unref_buffer(ost->picref);
1894             }
1895 #endif
1896             }
1897
1898         av_free(buffer_to_free);
1899         /* XXX: allocate the subtitles in the codec ? */
1900         if (subtitle_to_free) {
1901             avsubtitle_free(subtitle_to_free);
1902             subtitle_to_free = NULL;
1903         }
1904     }
1905  discard_packet:
1906
1907     return 0;
1908 }
1909
1910 static void print_sdp(OutputFile *output_files, int n)
1911 {
1912     char sdp[2048];
1913     int i;
1914     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1915
1916     if (!avc)
1917         exit_program(1);
1918     for (i = 0; i < n; i++)
1919         avc[i] = output_files[i].ctx;
1920
1921     av_sdp_create(avc, n, sdp, sizeof(sdp));
1922     printf("SDP:\n%s\n", sdp);
1923     fflush(stdout);
1924     av_freep(&avc);
1925 }
1926
1927 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1928                              char *error, int error_len)
1929 {
1930     int i;
1931     InputStream *ist = &input_streams[ist_index];
1932     if (ist->decoding_needed) {
1933         AVCodec *codec = ist->dec;
1934         if (!codec) {
1935             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1936                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1937             return AVERROR(EINVAL);
1938         }
1939
1940         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1941             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1942                     ist->file_index, ist->st->index);
1943             return AVERROR(EINVAL);
1944         }
1945         assert_codec_experimental(ist->st->codec, 0);
1946         assert_avoptions(ist->opts);
1947     }
1948
1949     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;
1950     ist->next_pts = AV_NOPTS_VALUE;
1951     ist->is_start = 1;
1952
1953     return 0;
1954 }
1955
1956 static int transcode_init(OutputFile *output_files,
1957                           int nb_output_files,
1958                           InputFile *input_files,
1959                           int nb_input_files)
1960 {
1961     int ret = 0, i, j;
1962     AVFormatContext *os;
1963     AVCodecContext *codec, *icodec;
1964     OutputStream *ost;
1965     InputStream *ist;
1966     char error[1024];
1967     int want_sdp = 1;
1968
1969     /* init framerate emulation */
1970     for (i = 0; i < nb_input_files; i++) {
1971         InputFile *ifile = &input_files[i];
1972         if (ifile->rate_emu)
1973             for (j = 0; j < ifile->nb_streams; j++)
1974                 input_streams[j + ifile->ist_index].start = av_gettime();
1975     }
1976
1977     /* output stream init */
1978     for(i=0;i<nb_output_files;i++) {
1979         os = output_files[i].ctx;
1980         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1981             av_dump_format(os, i, os->filename, 1);
1982             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1983             return AVERROR(EINVAL);
1984         }
1985     }
1986
1987     /* for each output stream, we compute the right encoding parameters */
1988     for (i = 0; i < nb_output_streams; i++) {
1989         ost = &output_streams[i];
1990         os = output_files[ost->file_index].ctx;
1991         ist = &input_streams[ost->source_index];
1992
1993         codec = ost->st->codec;
1994         icodec = ist->st->codec;
1995
1996         ost->st->disposition = ist->st->disposition;
1997         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1998         codec->chroma_sample_location = icodec->chroma_sample_location;
1999
2000         if (ost->st->stream_copy) {
2001             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2002
2003             if (extra_size > INT_MAX) {
2004                 return AVERROR(EINVAL);
2005             }
2006
2007             /* if stream_copy is selected, no need to decode or encode */
2008             codec->codec_id = icodec->codec_id;
2009             codec->codec_type = icodec->codec_type;
2010
2011             if(!codec->codec_tag){
2012                 if(   !os->oformat->codec_tag
2013                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2014                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2015                     codec->codec_tag = icodec->codec_tag;
2016             }
2017
2018             codec->bit_rate = icodec->bit_rate;
2019             codec->rc_max_rate    = icodec->rc_max_rate;
2020             codec->rc_buffer_size = icodec->rc_buffer_size;
2021             codec->extradata= av_mallocz(extra_size);
2022             if (!codec->extradata) {
2023                 return AVERROR(ENOMEM);
2024             }
2025             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2026             codec->extradata_size= icodec->extradata_size;
2027
2028             codec->time_base = ist->st->time_base;
2029             if(!strcmp(os->oformat->name, "avi")) {
2030                 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){
2031                     codec->time_base = icodec->time_base;
2032                     codec->time_base.num *= icodec->ticks_per_frame;
2033                     codec->time_base.den *= 2;
2034                 }
2035             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2036                 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){
2037                     codec->time_base = icodec->time_base;
2038                     codec->time_base.num *= icodec->ticks_per_frame;
2039                 }
2040             }
2041             av_reduce(&codec->time_base.num, &codec->time_base.den,
2042                         codec->time_base.num, codec->time_base.den, INT_MAX);
2043
2044             switch(codec->codec_type) {
2045             case AVMEDIA_TYPE_AUDIO:
2046                 if(audio_volume != 256) {
2047                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2048                     exit_program(1);
2049                 }
2050                 codec->channel_layout = icodec->channel_layout;
2051                 codec->sample_rate = icodec->sample_rate;
2052                 codec->channels = icodec->channels;
2053                 codec->frame_size = icodec->frame_size;
2054                 codec->audio_service_type = icodec->audio_service_type;
2055                 codec->block_align= icodec->block_align;
2056                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2057                     codec->block_align= 0;
2058                 if(codec->codec_id == CODEC_ID_AC3)
2059                     codec->block_align= 0;
2060                 break;
2061             case AVMEDIA_TYPE_VIDEO:
2062                 codec->pix_fmt = icodec->pix_fmt;
2063                 codec->width = icodec->width;
2064                 codec->height = icodec->height;
2065                 codec->has_b_frames = icodec->has_b_frames;
2066                 if (!codec->sample_aspect_ratio.num) {
2067                     codec->sample_aspect_ratio =
2068                     ost->st->sample_aspect_ratio =
2069                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2070                         ist->st->codec->sample_aspect_ratio.num ?
2071                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2072                 }
2073                 break;
2074             case AVMEDIA_TYPE_SUBTITLE:
2075                 codec->width = icodec->width;
2076                 codec->height = icodec->height;
2077                 break;
2078             case AVMEDIA_TYPE_DATA:
2079                 break;
2080             default:
2081                 abort();
2082             }
2083         } else {
2084             if (!ost->enc)
2085                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2086             switch(codec->codec_type) {
2087             case AVMEDIA_TYPE_AUDIO:
2088                 ost->fifo= av_fifo_alloc(1024);
2089                 if (!ost->fifo) {
2090                     return AVERROR(ENOMEM);
2091                 }
2092                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2093                 if (!codec->sample_rate) {
2094                     codec->sample_rate = icodec->sample_rate;
2095                 }
2096                 choose_sample_rate(ost->st, ost->enc);
2097                 codec->time_base = (AVRational){1, codec->sample_rate};
2098                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2099                     codec->sample_fmt = icodec->sample_fmt;
2100                 choose_sample_fmt(ost->st, ost->enc);
2101                 if (!codec->channels) {
2102                     codec->channels = icodec->channels;
2103                     codec->channel_layout = icodec->channel_layout;
2104                 }
2105                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2106                     codec->channel_layout = 0;
2107                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2108                 icodec->request_channels = codec->channels;
2109                 ist->decoding_needed = 1;
2110                 ost->encoding_needed = 1;
2111                 ost->resample_sample_fmt  = icodec->sample_fmt;
2112                 ost->resample_sample_rate = icodec->sample_rate;
2113                 ost->resample_channels    = icodec->channels;
2114                 break;
2115             case AVMEDIA_TYPE_VIDEO:
2116                 if (codec->pix_fmt == PIX_FMT_NONE)
2117                     codec->pix_fmt = icodec->pix_fmt;
2118                 choose_pixel_fmt(ost->st, ost->enc);
2119
2120                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2121                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2122                     exit_program(1);
2123                 }
2124
2125                 if (!codec->width || !codec->height) {
2126                     codec->width  = icodec->width;
2127                     codec->height = icodec->height;
2128                 }
2129
2130                 ost->video_resample = codec->width   != icodec->width  ||
2131                                       codec->height  != icodec->height ||
2132                                       codec->pix_fmt != icodec->pix_fmt;
2133                 if (ost->video_resample) {
2134                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2135                 }
2136
2137                 ost->resample_height = icodec->height;
2138                 ost->resample_width  = icodec->width;
2139                 ost->resample_pix_fmt= icodec->pix_fmt;
2140                 ost->encoding_needed = 1;
2141                 ist->decoding_needed = 1;
2142
2143                 if (!ost->frame_rate.num)
2144                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2145                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2146                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2147                     ost->frame_rate = ost->enc->supported_framerates[idx];
2148                 }
2149                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2150                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2151                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2152                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2153                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2154                 }
2155
2156 #if CONFIG_AVFILTER
2157                 if (configure_video_filters(ist, ost)) {
2158                     fprintf(stderr, "Error opening filters!\n");
2159                     exit(1);
2160                 }
2161 #endif
2162                 break;
2163             case AVMEDIA_TYPE_SUBTITLE:
2164                 ost->encoding_needed = 1;
2165                 ist->decoding_needed = 1;
2166                 break;
2167             default:
2168                 abort();
2169                 break;
2170             }
2171             /* two pass mode */
2172             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2173                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2174                 char logfilename[1024];
2175                 FILE *f;
2176
2177                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2178                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2179                          i);
2180                 if (codec->flags & CODEC_FLAG_PASS1) {
2181                     f = fopen(logfilename, "wb");
2182                     if (!f) {
2183                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2184                         exit_program(1);
2185                     }
2186                     ost->logfile = f;
2187                 } else {
2188                     char  *logbuffer;
2189                     size_t logbuffer_size;
2190                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2191                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2192                         exit_program(1);
2193                     }
2194                     codec->stats_in = logbuffer;
2195                 }
2196             }
2197         }
2198         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2199             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2200             int size= codec->width * codec->height;
2201             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2202         }
2203     }
2204
2205     if (!bit_buffer)
2206         bit_buffer = av_malloc(bit_buffer_size);
2207     if (!bit_buffer) {
2208         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2209                 bit_buffer_size);
2210         return AVERROR(ENOMEM);
2211     }
2212
2213     /* open each encoder */
2214     for (i = 0; i < nb_output_streams; i++) {
2215         ost = &output_streams[i];
2216         if (ost->encoding_needed) {
2217             AVCodec *codec = ost->enc;
2218             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2219             if (!codec) {
2220                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2221                          ost->st->codec->codec_id, ost->file_index, ost->index);
2222                 ret = AVERROR(EINVAL);
2223                 goto dump_format;
2224             }
2225             if (dec->subtitle_header) {
2226                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2227                 if (!ost->st->codec->subtitle_header) {
2228                     ret = AVERROR(ENOMEM);
2229                     goto dump_format;
2230                 }
2231                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2232                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2233             }
2234             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2235                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2236                         ost->file_index, ost->index);
2237                 ret = AVERROR(EINVAL);
2238                 goto dump_format;
2239             }
2240             assert_codec_experimental(ost->st->codec, 1);
2241             assert_avoptions(ost->opts);
2242             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2243                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2244                                              "It takes bits/s as argument, not kbits/s\n");
2245             extra_size += ost->st->codec->extradata_size;
2246         }
2247     }
2248
2249     /* init input streams */
2250     for (i = 0; i < nb_input_streams; i++)
2251         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2252             goto dump_format;
2253
2254     /* open files and write file headers */
2255     for (i = 0; i < nb_output_files; i++) {
2256         os = output_files[i].ctx;
2257         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2258             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2259             ret = AVERROR(EINVAL);
2260             goto dump_format;
2261         }
2262 //        assert_avoptions(output_files[i].opts);
2263         if (strcmp(os->oformat->name, "rtp")) {
2264             want_sdp = 0;
2265         }
2266     }
2267
2268  dump_format:
2269     /* dump the file output parameters - cannot be done before in case
2270        of stream copy */
2271     for(i=0;i<nb_output_files;i++) {
2272         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2273     }
2274
2275     /* dump the stream mapping */
2276     if (verbose >= 0) {
2277         fprintf(stderr, "Stream mapping:\n");
2278         for (i = 0; i < nb_output_streams;i ++) {
2279             ost = &output_streams[i];
2280             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2281                     input_streams[ost->source_index].file_index,
2282                     input_streams[ost->source_index].st->index,
2283                     ost->file_index,
2284                     ost->index);
2285             if (ost->sync_ist != &input_streams[ost->source_index])
2286                 fprintf(stderr, " [sync #%d.%d]",
2287                         ost->sync_ist->file_index,
2288                         ost->sync_ist->st->index);
2289             if (ost->st->stream_copy)
2290                 fprintf(stderr, " (copy)");
2291             else
2292                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2293                         input_streams[ost->source_index].dec->name : "?",
2294                         ost->enc ? ost->enc->name : "?");
2295             fprintf(stderr, "\n");
2296         }
2297     }
2298
2299     if (ret) {
2300         fprintf(stderr, "%s\n", error);
2301         return ret;
2302     }
2303
2304     if (want_sdp) {
2305         print_sdp(output_files, nb_output_files);
2306     }
2307
2308     return 0;
2309 }
2310
2311 /*
2312  * The following code is the main loop of the file converter
2313  */
2314 static int transcode(OutputFile *output_files,
2315                      int nb_output_files,
2316                      InputFile *input_files,
2317                      int nb_input_files)
2318 {
2319     int ret, i;
2320     AVFormatContext *is, *os;
2321     OutputStream *ost;
2322     InputStream *ist;
2323     uint8_t *no_packet;
2324     int no_packet_count=0;
2325     int64_t timer_start;
2326     int key;
2327
2328     if (!(no_packet = av_mallocz(nb_input_files)))
2329         exit_program(1);
2330
2331     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2332     if (ret < 0)
2333         goto fail;
2334
2335     if (!using_stdin) {
2336         if(verbose >= 0)
2337             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2338         avio_set_interrupt_cb(decode_interrupt_cb);
2339     }
2340     term_init();
2341
2342     timer_start = av_gettime();
2343
2344     for(; received_sigterm == 0;) {
2345         int file_index, ist_index;
2346         AVPacket pkt;
2347         int64_t ipts_min;
2348         double opts_min;
2349
2350         ipts_min = INT64_MAX;
2351         opts_min= 1e100;
2352         /* if 'q' pressed, exits */
2353         if (!using_stdin) {
2354             if (q_pressed)
2355                 break;
2356             /* read_key() returns 0 on EOF */
2357             key = read_key();
2358             if (key == 'q')
2359                 break;
2360             if (key == '+') verbose++;
2361             if (key == '-') verbose--;
2362             if (key == 's') qp_hist     ^= 1;
2363             if (key == 'h'){
2364                 if (do_hex_dump){
2365                     do_hex_dump = do_pkt_dump = 0;
2366                 } else if(do_pkt_dump){
2367                     do_hex_dump = 1;
2368                 } else
2369                     do_pkt_dump = 1;
2370                 av_log_set_level(AV_LOG_DEBUG);
2371             }
2372             if (key == 'd' || key == 'D'){
2373                 int debug=0;
2374                 if(key == 'D') {
2375                     debug = input_streams[0].st->codec->debug<<1;
2376                     if(!debug) debug = 1;
2377                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2378                         debug += debug;
2379                 }else
2380                     scanf("%d", &debug);
2381                 for(i=0;i<nb_input_streams;i++) {
2382                     input_streams[i].st->codec->debug = debug;
2383                 }
2384                 for(i=0;i<nb_output_streams;i++) {
2385                     ost = &output_streams[i];
2386                     ost->st->codec->debug = debug;
2387                 }
2388                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2389                 fprintf(stderr,"debug=%d\n", debug);
2390             }
2391             if (key == '?'){
2392                 fprintf(stderr, "key    function\n"
2393                                 "?      show this help\n"
2394                                 "+      increase verbosity\n"
2395                                 "-      decrease verbosity\n"
2396                                 "D      cycle through available debug modes\n"
2397                                 "h      dump packets/hex press to cycle through the 3 states\n"
2398                                 "q      quit\n"
2399                                 "s      Show QP histogram\n"
2400                 );
2401             }
2402         }
2403
2404         /* select the stream that we must read now by looking at the
2405            smallest output pts */
2406         file_index = -1;
2407         for (i = 0; i < nb_output_streams; i++) {
2408             OutputFile *of;
2409             int64_t ipts;
2410             double  opts;
2411             ost = &output_streams[i];
2412             of = &output_files[ost->file_index];
2413             os = output_files[ost->file_index].ctx;
2414             ist = &input_streams[ost->source_index];
2415             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2416                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2417                 continue;
2418             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2419             ipts = ist->pts;
2420             if (!input_files[ist->file_index].eof_reached){
2421                 if(ipts < ipts_min) {
2422                     ipts_min = ipts;
2423                     if(input_sync ) file_index = ist->file_index;
2424                 }
2425                 if(opts < opts_min) {
2426                     opts_min = opts;
2427                     if(!input_sync) file_index = ist->file_index;
2428                 }
2429             }
2430             if (ost->frame_number >= ost->max_frames) {
2431                 int j;
2432                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2433                     output_streams[j].is_past_recording_time = 1;
2434                 continue;
2435             }
2436         }
2437         /* if none, if is finished */
2438         if (file_index < 0) {
2439             if(no_packet_count){
2440                 no_packet_count=0;
2441                 memset(no_packet, 0, nb_input_files);
2442                 usleep(10000);
2443                 continue;
2444             }
2445             break;
2446         }
2447
2448         /* read a frame from it and output it in the fifo */
2449         is = input_files[file_index].ctx;
2450         ret= av_read_frame(is, &pkt);
2451         if(ret == AVERROR(EAGAIN)){
2452             no_packet[file_index]=1;
2453             no_packet_count++;
2454             continue;
2455         }
2456         if (ret < 0) {
2457             input_files[file_index].eof_reached = 1;
2458             if (opt_shortest)
2459                 break;
2460             else
2461                 continue;
2462         }
2463
2464         no_packet_count=0;
2465         memset(no_packet, 0, nb_input_files);
2466
2467         if (do_pkt_dump) {
2468             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2469                              is->streams[pkt.stream_index]);
2470         }
2471         /* the following test is needed in case new streams appear
2472            dynamically in stream : we ignore them */
2473         if (pkt.stream_index >= input_files[file_index].nb_streams)
2474             goto discard_packet;
2475         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2476         ist = &input_streams[ist_index];
2477         if (ist->discard)
2478             goto discard_packet;
2479
2480         if (pkt.dts != AV_NOPTS_VALUE)
2481             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2482         if (pkt.pts != AV_NOPTS_VALUE)
2483             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2484
2485         if(pkt.pts != AV_NOPTS_VALUE)
2486             pkt.pts *= ist->ts_scale;
2487         if(pkt.dts != AV_NOPTS_VALUE)
2488             pkt.dts *= ist->ts_scale;
2489
2490 //        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);
2491         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2492             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2493             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2494             int64_t delta= pkt_dts - ist->next_pts;
2495             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2496                 input_files[ist->file_index].ts_offset -= delta;
2497                 if (verbose > 2)
2498                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2499                             delta, input_files[ist->file_index].ts_offset);
2500                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2501                 if(pkt.pts != AV_NOPTS_VALUE)
2502                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2503             }
2504         }
2505
2506         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2507         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2508
2509             if (verbose >= 0)
2510                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2511                         ist->file_index, ist->st->index);
2512             if (exit_on_error)
2513                 exit_program(1);
2514             av_free_packet(&pkt);
2515             continue;
2516         }
2517
2518     discard_packet:
2519         av_free_packet(&pkt);
2520
2521         /* dump report by using the output first video and audio streams */
2522         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2523     }
2524
2525     /* at the end of stream, we must flush the decoder buffers */
2526     for (i = 0; i < nb_input_streams; i++) {
2527         ist = &input_streams[i];
2528         if (ist->decoding_needed) {
2529             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2530         }
2531     }
2532     flush_encoders(output_streams, nb_output_streams);
2533
2534     term_exit();
2535
2536     /* write the trailer if needed and close file */
2537     for(i=0;i<nb_output_files;i++) {
2538         os = output_files[i].ctx;
2539         av_write_trailer(os);
2540     }
2541
2542     /* dump report by using the first video and audio streams */
2543     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2544
2545     /* close each encoder */
2546     for (i = 0; i < nb_output_streams; i++) {
2547         ost = &output_streams[i];
2548         if (ost->encoding_needed) {
2549             av_freep(&ost->st->codec->stats_in);
2550             avcodec_close(ost->st->codec);
2551         }
2552 #if CONFIG_AVFILTER
2553         avfilter_graph_free(&ost->graph);
2554 #endif
2555     }
2556
2557     /* close each decoder */
2558     for (i = 0; i < nb_input_streams; i++) {
2559         ist = &input_streams[i];
2560         if (ist->decoding_needed) {
2561             avcodec_close(ist->st->codec);
2562         }
2563     }
2564
2565     /* finished ! */
2566     ret = 0;
2567
2568  fail:
2569     av_freep(&bit_buffer);
2570     av_freep(&no_packet);
2571
2572     if (output_streams) {
2573         for (i = 0; i < nb_output_streams; i++) {
2574             ost = &output_streams[i];
2575             if (ost) {
2576                 if (ost->st->stream_copy)
2577                     av_freep(&ost->st->codec->extradata);
2578                 if (ost->logfile) {
2579                     fclose(ost->logfile);
2580                     ost->logfile = NULL;
2581                 }
2582                 av_fifo_free(ost->fifo); /* works even if fifo is not
2583                                              initialized but set to zero */
2584                 av_freep(&ost->st->codec->subtitle_header);
2585                 av_free(ost->resample_frame.data[0]);
2586                 av_free(ost->forced_kf_pts);
2587                 if (ost->video_resample)
2588                     sws_freeContext(ost->img_resample_ctx);
2589                 if (ost->resample)
2590                     audio_resample_close(ost->resample);
2591                 if (ost->reformat_ctx)
2592                     av_audio_convert_free(ost->reformat_ctx);
2593                 av_dict_free(&ost->opts);
2594             }
2595         }
2596     }
2597     return ret;
2598 }
2599
2600 static int opt_video_rc_override_string(const char *opt, const char *arg)
2601 {
2602     video_rc_override_string = arg;
2603     return 0;
2604 }
2605
2606 static int opt_me_threshold(const char *opt, const char *arg)
2607 {
2608     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2609     return 0;
2610 }
2611
2612 static int opt_verbose(const char *opt, const char *arg)
2613 {
2614     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2615     return 0;
2616 }
2617
2618 static int opt_frame_rate(const char *opt, const char *arg)
2619 {
2620     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2621         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2622         exit_program(1);
2623     }
2624     return 0;
2625 }
2626
2627 static int opt_frame_size(const char *opt, const char *arg)
2628 {
2629     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2630         fprintf(stderr, "Incorrect frame size\n");
2631         return AVERROR(EINVAL);
2632     }
2633     return 0;
2634 }
2635
2636 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2637 {
2638     if (strcmp(arg, "list")) {
2639         frame_pix_fmt = av_get_pix_fmt(arg);
2640         if (frame_pix_fmt == PIX_FMT_NONE) {
2641             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2642             return AVERROR(EINVAL);
2643         }
2644     } else {
2645         opt_pix_fmts(NULL, NULL);
2646         exit_program(0);
2647     }
2648     return 0;
2649 }
2650
2651 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2652 {
2653     int x = 0, y = 0;
2654     double ar = 0;
2655     const char *p;
2656     char *end;
2657
2658     p = strchr(arg, ':');
2659     if (p) {
2660         x = strtol(arg, &end, 10);
2661         if (end == p)
2662             y = strtol(end+1, &end, 10);
2663         if (x > 0 && y > 0)
2664             ar = (double)x / (double)y;
2665     } else
2666         ar = strtod(arg, NULL);
2667
2668     if (!ar) {
2669         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2670         return AVERROR(EINVAL);
2671     }
2672     frame_aspect_ratio = ar;
2673     return 0;
2674 }
2675
2676 static int opt_qscale(const char *opt, const char *arg)
2677 {
2678     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2679     if (video_qscale <= 0 || video_qscale > 255) {
2680         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2681         return AVERROR(EINVAL);
2682     }
2683     return 0;
2684 }
2685
2686 static int opt_top_field_first(const char *opt, const char *arg)
2687 {
2688     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2689     return opt_default(opt, arg);
2690 }
2691
2692 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2693 {
2694     if (strcmp(arg, "list")) {
2695         audio_sample_fmt = av_get_sample_fmt(arg);
2696         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2697             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2698             return AVERROR(EINVAL);
2699         }
2700     } else {
2701         int i;
2702         char fmt_str[128];
2703         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2704             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2705         exit_program(0);
2706     }
2707     return 0;
2708 }
2709
2710 static int opt_audio_rate(const char *opt, const char *arg)
2711 {
2712     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2713     return 0;
2714 }
2715
2716 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2717 {
2718     return parse_option(o, "codec:a", arg, options);
2719 }
2720
2721 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2722 {
2723     return parse_option(o, "codec:v", arg, options);
2724 }
2725
2726 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2727 {
2728     return parse_option(o, "codec:s", arg, options);
2729 }
2730
2731 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2732 {
2733     return parse_option(o, "codec:d", arg, options);
2734 }
2735
2736 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2737 {
2738     StreamMap *m = NULL;
2739     int i, negative = 0, file_idx;
2740     int sync_file_idx = -1, sync_stream_idx;
2741     char *p, *sync;
2742     char *map;
2743
2744     if (*arg == '-') {
2745         negative = 1;
2746         arg++;
2747     }
2748     map = av_strdup(arg);
2749
2750     /* parse sync stream first, just pick first matching stream */
2751     if (sync = strchr(map, ',')) {
2752         *sync = 0;
2753         sync_file_idx = strtol(sync + 1, &sync, 0);
2754         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2755             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2756             exit_program(1);
2757         }
2758         if (*sync)
2759             sync++;
2760         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2761             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2762                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2763                 sync_stream_idx = i;
2764                 break;
2765             }
2766         if (i == input_files[sync_file_idx].nb_streams) {
2767             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2768                                        "match any streams.\n", arg);
2769             exit_program(1);
2770         }
2771     }
2772
2773
2774     file_idx = strtol(map, &p, 0);
2775     if (file_idx >= nb_input_files || file_idx < 0) {
2776         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2777         exit_program(1);
2778     }
2779     if (negative)
2780         /* disable some already defined maps */
2781         for (i = 0; i < o->nb_stream_maps; i++) {
2782             m = &o->stream_maps[i];
2783             if (check_stream_specifier(input_files[m->file_index].ctx,
2784                                        input_files[m->file_index].ctx->streams[m->stream_index],
2785                                        *p == ':' ? p + 1 : p) > 0)
2786                 m->disabled = 1;
2787         }
2788     else
2789         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2790             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2791                         *p == ':' ? p + 1 : p) <= 0)
2792                 continue;
2793             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2794                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2795             m = &o->stream_maps[o->nb_stream_maps - 1];
2796
2797             m->file_index   = file_idx;
2798             m->stream_index = i;
2799
2800             if (sync_file_idx >= 0) {
2801                 m->sync_file_index   = sync_file_idx;
2802                 m->sync_stream_index = sync_stream_idx;
2803             } else {
2804                 m->sync_file_index   = file_idx;
2805                 m->sync_stream_index = i;
2806             }
2807         }
2808
2809     if (!m) {
2810         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2811         exit_program(1);
2812     }
2813
2814     av_freep(&map);
2815     return 0;
2816 }
2817
2818 static void parse_meta_type(char *arg, char *type, int *index)
2819 {
2820     if (*arg) {
2821         *type = *arg;
2822         switch (*arg) {
2823         case 'g':
2824             break;
2825         case 's':
2826         case 'c':
2827         case 'p':
2828             if (*(++arg) == ':')
2829                 *index = strtol(++arg, NULL, 0);
2830             break;
2831         default:
2832             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2833             exit_program(1);
2834         }
2835     } else
2836         *type = 'g';
2837 }
2838
2839 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2840 {
2841     MetadataMap *m, *m1;
2842     char *p;
2843
2844     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2845                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2846
2847     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2848     m->file = strtol(arg, &p, 0);
2849     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2850
2851     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2852     if (p = strchr(opt, ':'))
2853         parse_meta_type(p + 1, &m1->type, &m1->index);
2854     else
2855         m1->type = 'g';
2856
2857     if (m->type == 'g' || m1->type == 'g')
2858         o->metadata_global_manual = 1;
2859     if (m->type == 's' || m1->type == 's')
2860         o->metadata_streams_manual = 1;
2861     if (m->type == 'c' || m1->type == 'c')
2862         o->metadata_chapters_manual = 1;
2863
2864     return 0;
2865 }
2866
2867 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2868 {
2869     const char *codec_string = encoder ? "encoder" : "decoder";
2870     AVCodec *codec;
2871
2872     if(!name)
2873         return CODEC_ID_NONE;
2874     codec = encoder ?
2875         avcodec_find_encoder_by_name(name) :
2876         avcodec_find_decoder_by_name(name);
2877     if(!codec) {
2878         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2879         exit_program(1);
2880     }
2881     if(codec->type != type) {
2882         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2883         exit_program(1);
2884     }
2885     return codec->id;
2886 }
2887
2888 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2889 {
2890     char *codec_name = NULL;
2891
2892     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2893
2894     if (!codec_name) {
2895         if (s->oformat) {
2896             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2897             return avcodec_find_encoder(st->codec->codec_id);
2898         }
2899     } else if (!strcmp(codec_name, "copy"))
2900         st->stream_copy = 1;
2901     else {
2902         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2903         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2904                             avcodec_find_decoder_by_name(codec_name);
2905     }
2906
2907     return NULL;
2908 }
2909
2910 /**
2911  * Add all the streams from the given input file to the global
2912  * list of input streams.
2913  */
2914 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2915 {
2916     int i, rfps, rfps_base;
2917
2918     for (i = 0; i < ic->nb_streams; i++) {
2919         AVStream *st = ic->streams[i];
2920         AVCodecContext *dec = st->codec;
2921         InputStream *ist;
2922         double scale = 1.0;
2923
2924         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2925         ist = &input_streams[nb_input_streams - 1];
2926         ist->st = st;
2927         ist->file_index = nb_input_files;
2928         ist->discard = 1;
2929         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2930
2931         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2932         ist->ts_scale = scale;
2933
2934         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2935         if (!ist->dec)
2936             ist->dec = avcodec_find_decoder(dec->codec_id);
2937
2938         switch (dec->codec_type) {
2939         case AVMEDIA_TYPE_AUDIO:
2940             if(!ist->dec)
2941                 ist->dec = avcodec_find_decoder(dec->codec_id);
2942             if(o->audio_disable)
2943                 st->discard= AVDISCARD_ALL;
2944             break;
2945         case AVMEDIA_TYPE_VIDEO:
2946             if(!ist->dec)
2947                 ist->dec = avcodec_find_decoder(dec->codec_id);
2948             rfps      = ic->streams[i]->r_frame_rate.num;
2949             rfps_base = ic->streams[i]->r_frame_rate.den;
2950             if (dec->lowres) {
2951                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2952             }
2953             if(me_threshold)
2954                 dec->debug |= FF_DEBUG_MV;
2955
2956             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2957
2958                 if (verbose >= 0)
2959                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2960                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2961
2962                     (float)rfps / rfps_base, rfps, rfps_base);
2963             }
2964
2965             if (o->video_disable)
2966                 st->discard= AVDISCARD_ALL;
2967             else if(video_discard)
2968                 st->discard= video_discard;
2969             break;
2970         case AVMEDIA_TYPE_DATA:
2971             break;
2972         case AVMEDIA_TYPE_SUBTITLE:
2973             if(!ist->dec)
2974                 ist->dec = avcodec_find_decoder(dec->codec_id);
2975             if(o->subtitle_disable)
2976                 st->discard = AVDISCARD_ALL;
2977             break;
2978         case AVMEDIA_TYPE_ATTACHMENT:
2979         case AVMEDIA_TYPE_UNKNOWN:
2980             break;
2981         default:
2982             abort();
2983         }
2984     }
2985 }
2986
2987 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2988 {
2989     AVFormatContext *ic;
2990     AVInputFormat *file_iformat = NULL;
2991     int err, i, ret;
2992     int64_t timestamp;
2993     uint8_t buf[128];
2994     AVDictionary **opts;
2995     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2996
2997     if (o->format) {
2998         if (!(file_iformat = av_find_input_format(o->format))) {
2999             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
3000             exit_program(1);
3001         }
3002     }
3003
3004     if (!strcmp(filename, "-"))
3005         filename = "pipe:";
3006
3007     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3008                     !strcmp(filename, "/dev/stdin");
3009
3010     /* get default parameters from command line */
3011     ic = avformat_alloc_context();
3012     if (!ic) {
3013         print_error(filename, AVERROR(ENOMEM));
3014         exit_program(1);
3015     }
3016     if (audio_sample_rate) {
3017         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3018         av_dict_set(&format_opts, "sample_rate", buf, 0);
3019     }
3020     if (o->nb_audio_channels) {
3021         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3022         av_dict_set(&format_opts, "channels", buf, 0);
3023     }
3024     if (frame_rate.num) {
3025         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3026         av_dict_set(&format_opts, "framerate", buf, 0);
3027     }
3028     if (frame_width && frame_height) {
3029         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3030         av_dict_set(&format_opts, "video_size", buf, 0);
3031     }
3032     if (frame_pix_fmt != PIX_FMT_NONE)
3033         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3034
3035     ic->flags |= AVFMT_FLAG_NONBLOCK;
3036
3037     /* open the input file with generic libav function */
3038     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3039     if (err < 0) {
3040         print_error(filename, err);
3041         exit_program(1);
3042     }
3043     assert_avoptions(format_opts);
3044
3045     if(opt_programid) {
3046         int i, j;
3047         int found=0;
3048         for(i=0; i<ic->nb_streams; i++){
3049             ic->streams[i]->discard= AVDISCARD_ALL;
3050         }
3051         for(i=0; i<ic->nb_programs; i++){
3052             AVProgram *p= ic->programs[i];
3053             if(p->id != opt_programid){
3054                 p->discard = AVDISCARD_ALL;
3055             }else{
3056                 found=1;
3057                 for(j=0; j<p->nb_stream_indexes; j++){
3058                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3059                 }
3060             }
3061         }
3062         if(!found){
3063             fprintf(stderr, "Specified program id not found\n");
3064             exit_program(1);
3065         }
3066         opt_programid=0;
3067     }
3068
3069     /* apply forced codec ids */
3070     for (i = 0; i < ic->nb_streams; i++)
3071         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3072
3073     /* Set AVCodecContext options for avformat_find_stream_info */
3074     opts = setup_find_stream_info_opts(ic, codec_opts);
3075     orig_nb_streams = ic->nb_streams;
3076
3077     /* If not enough info to get the stream parameters, we decode the
3078        first frames to get it. (used in mpeg case for example) */
3079     ret = avformat_find_stream_info(ic, opts);
3080     if (ret < 0 && verbose >= 0) {
3081         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3082         av_close_input_file(ic);
3083         exit_program(1);
3084     }
3085
3086     timestamp = o->start_time;
3087     /* add the stream start time */
3088     if (ic->start_time != AV_NOPTS_VALUE)
3089         timestamp += ic->start_time;
3090
3091     /* if seeking requested, we execute it */
3092     if (o->start_time != 0) {
3093         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3094         if (ret < 0) {
3095             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3096                     filename, (double)timestamp / AV_TIME_BASE);
3097         }
3098     }
3099
3100     /* update the current parameters so that they match the one of the input stream */
3101     add_input_streams(o, ic);
3102
3103     /* dump the file content */
3104     if (verbose >= 0)
3105         av_dump_format(ic, nb_input_files, filename, 0);
3106
3107     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3108     input_files[nb_input_files - 1].ctx        = ic;
3109     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3110     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3111     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3112
3113     top_field_first = -1;
3114     frame_rate    = (AVRational){0, 0};
3115     frame_pix_fmt = PIX_FMT_NONE;
3116     frame_height = 0;
3117     frame_width  = 0;
3118     audio_sample_rate = 0;
3119     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3120
3121     for (i = 0; i < orig_nb_streams; i++)
3122         av_dict_free(&opts[i]);
3123     av_freep(&opts);
3124
3125     reset_options(o);
3126     return 0;
3127 }
3128
3129 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3130                                     AVCodecContext *avctx)
3131 {
3132     char *p;
3133     int n = 1, i;
3134     int64_t t;
3135
3136     for (p = kf; *p; p++)
3137         if (*p == ',')
3138             n++;
3139     ost->forced_kf_count = n;
3140     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3141     if (!ost->forced_kf_pts) {
3142         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3143         exit_program(1);
3144     }
3145     for (i = 0; i < n; i++) {
3146         p = i ? strchr(p, ',') + 1 : kf;
3147         t = parse_time_or_die("force_key_frames", p, 1);
3148         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3149     }
3150 }
3151
3152 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3153 {
3154     OutputStream *ost;
3155     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3156     int idx      = oc->nb_streams - 1;
3157     int64_t max_frames = INT64_MAX;
3158     char *bsf = NULL, *next, *codec_tag = NULL;
3159     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3160
3161     if (!st) {
3162         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3163         exit_program(1);
3164     }
3165
3166     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3167                                 nb_output_streams + 1);
3168     ost = &output_streams[nb_output_streams - 1];
3169     ost->file_index = nb_output_files;
3170     ost->index = idx;
3171     ost->st    = st;
3172     st->codec->codec_type = type;
3173     ost->enc = choose_codec(o, oc, st, type);
3174     if (ost->enc) {
3175         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3176     }
3177
3178     avcodec_get_context_defaults3(st->codec, ost->enc);
3179     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3180
3181     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3182     ost->max_frames = max_frames;
3183
3184     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3185     while (bsf) {
3186         if (next = strchr(bsf, ','))
3187             *next++ = 0;
3188         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3189             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
3190             exit_program(1);
3191         }
3192         if (bsfc_prev)
3193             bsfc_prev->next = bsfc;
3194         else
3195             ost->bitstream_filters = bsfc;
3196
3197         bsfc_prev = bsfc;
3198         bsf       = next;
3199     }
3200
3201     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3202     if (codec_tag) {
3203         uint32_t tag = strtol(codec_tag, &next, 0);
3204         if (*next)
3205             tag = AV_RL32(codec_tag);
3206         st->codec->codec_tag = tag;
3207     }
3208
3209     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3210     return ost;
3211 }
3212
3213 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3214 {
3215     AVStream *st;
3216     OutputStream *ost;
3217     AVCodecContext *video_enc;
3218
3219     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3220     st  = ost->st;
3221     if (!st->stream_copy) {
3222         ost->frame_aspect_ratio = frame_aspect_ratio;
3223         frame_aspect_ratio = 0;
3224 #if CONFIG_AVFILTER
3225         ost->avfilter = vfilters;
3226         vfilters = NULL;
3227 #endif
3228     }
3229
3230     video_enc = st->codec;
3231
3232     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3233         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3234     }
3235
3236     if (st->stream_copy) {
3237         video_enc->sample_aspect_ratio =
3238         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3239     } else {
3240         const char *p;
3241         int i;
3242
3243         if (frame_rate.num)
3244             ost->frame_rate = frame_rate;
3245
3246         video_enc->width = frame_width;
3247         video_enc->height = frame_height;
3248         video_enc->pix_fmt = frame_pix_fmt;
3249         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3250         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3251
3252         if (video_qscale || same_quant) {
3253             video_enc->flags |= CODEC_FLAG_QSCALE;
3254             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3255         }
3256
3257         if(intra_matrix)
3258             video_enc->intra_matrix = intra_matrix;
3259         if(inter_matrix)
3260             video_enc->inter_matrix = inter_matrix;
3261
3262         p= video_rc_override_string;
3263         for(i=0; p; i++){
3264             int start, end, q;
3265             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3266             if(e!=3){
3267                 fprintf(stderr, "error parsing rc_override\n");
3268                 exit_program(1);
3269             }
3270             video_enc->rc_override=
3271                 av_realloc(video_enc->rc_override,
3272                            sizeof(RcOverride)*(i+1));
3273             video_enc->rc_override[i].start_frame= start;
3274             video_enc->rc_override[i].end_frame  = end;
3275             if(q>0){
3276                 video_enc->rc_override[i].qscale= q;
3277                 video_enc->rc_override[i].quality_factor= 1.0;
3278             }
3279             else{
3280                 video_enc->rc_override[i].qscale= 0;
3281                 video_enc->rc_override[i].quality_factor= -q/100.0;
3282             }
3283             p= strchr(p, '/');
3284             if(p) p++;
3285         }
3286         video_enc->rc_override_count=i;
3287         if (!video_enc->rc_initial_buffer_occupancy)
3288             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3289         video_enc->me_threshold= me_threshold;
3290         video_enc->intra_dc_precision= intra_dc_precision - 8;
3291
3292         if (do_psnr)
3293             video_enc->flags|= CODEC_FLAG_PSNR;
3294
3295         /* two pass mode */
3296         if (do_pass) {
3297             if (do_pass == 1) {
3298                 video_enc->flags |= CODEC_FLAG_PASS1;
3299             } else {
3300                 video_enc->flags |= CODEC_FLAG_PASS2;
3301             }
3302         }
3303
3304         if (forced_key_frames)
3305             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3306     }
3307
3308     /* reset some key parameters */
3309     av_freep(&forced_key_frames);
3310     frame_pix_fmt = PIX_FMT_NONE;
3311     return ost;
3312 }
3313
3314 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3315 {
3316     AVStream *st;
3317     OutputStream *ost;
3318     AVCodecContext *audio_enc;
3319
3320     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3321     st  = ost->st;
3322
3323     audio_enc = st->codec;
3324     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3325
3326     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3327         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3328     }
3329     if (!st->stream_copy) {
3330         if (audio_qscale > QSCALE_NONE) {
3331             audio_enc->flags |= CODEC_FLAG_QSCALE;
3332             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3333         }
3334         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3335
3336         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3337             audio_enc->sample_fmt = audio_sample_fmt;
3338         if (audio_sample_rate)
3339             audio_enc->sample_rate = audio_sample_rate;
3340     }
3341
3342     return ost;
3343 }
3344
3345 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3346 {
3347     AVStream *st;
3348     OutputStream *ost;
3349     AVCodecContext *data_enc;
3350
3351     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3352     st  = ost->st;
3353     data_enc = st->codec;
3354     if (!st->stream_copy) {
3355         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3356         exit_program(1);
3357     }
3358
3359     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3360         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3361     }
3362
3363     return ost;
3364 }
3365
3366 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3367 {
3368     AVStream *st;
3369     OutputStream *ost;
3370     AVCodecContext *subtitle_enc;
3371
3372     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3373     st  = ost->st;
3374     subtitle_enc = st->codec;
3375
3376     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3377
3378     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3379         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3380     }
3381
3382     return ost;
3383 }
3384
3385 /* arg format is "output-stream-index:streamid-value". */
3386 static int opt_streamid(const char *opt, const char *arg)
3387 {
3388     int idx;
3389     char *p;
3390     char idx_str[16];
3391
3392     av_strlcpy(idx_str, arg, sizeof(idx_str));
3393     p = strchr(idx_str, ':');
3394     if (!p) {
3395         fprintf(stderr,
3396                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3397                 arg, opt);
3398         exit_program(1);
3399     }
3400     *p++ = '\0';
3401     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3402     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3403     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3404     return 0;
3405 }
3406
3407 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3408 {
3409     AVFormatContext *is = ifile->ctx;
3410     AVFormatContext *os = ofile->ctx;
3411     int i;
3412
3413     for (i = 0; i < is->nb_chapters; i++) {
3414         AVChapter *in_ch = is->chapters[i], *out_ch;
3415         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3416                                       AV_TIME_BASE_Q, in_ch->time_base);
3417         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3418                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3419
3420
3421         if (in_ch->end < ts_off)
3422             continue;
3423         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3424             break;
3425
3426         out_ch = av_mallocz(sizeof(AVChapter));
3427         if (!out_ch)
3428             return AVERROR(ENOMEM);
3429
3430         out_ch->id        = in_ch->id;
3431         out_ch->time_base = in_ch->time_base;
3432         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3433         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3434
3435         if (copy_metadata)
3436             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3437
3438         os->nb_chapters++;
3439         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3440         if (!os->chapters)
3441             return AVERROR(ENOMEM);
3442         os->chapters[os->nb_chapters - 1] = out_ch;
3443     }
3444     return 0;
3445 }
3446
3447 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3448 {
3449     int i, err;
3450     AVFormatContext *ic = NULL;
3451
3452     err = avformat_open_input(&ic, filename, NULL, NULL);
3453     if (err < 0)
3454         return err;
3455     /* copy stream format */
3456     for(i=0;i<ic->nb_streams;i++) {
3457         AVStream *st;
3458         OutputStream *ost;
3459         AVCodec *codec;
3460
3461         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3462         ost   = new_output_stream(o, s, codec->type);
3463         st    = ost->st;
3464
3465         // FIXME: a more elegant solution is needed
3466         memcpy(st, ic->streams[i], sizeof(AVStream));
3467         st->info = av_malloc(sizeof(*st->info));
3468         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3469         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3470
3471         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3472             choose_sample_fmt(st, codec);
3473         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3474             choose_pixel_fmt(st, codec);
3475     }
3476
3477     av_close_input_file(ic);
3478     return 0;
3479 }
3480
3481 static void opt_output_file(void *optctx, const char *filename)
3482 {
3483     OptionsContext *o = optctx;
3484     AVFormatContext *oc;
3485     int i, err;
3486     AVOutputFormat *file_oformat;
3487     OutputStream *ost;
3488     InputStream  *ist;
3489
3490     if (!strcmp(filename, "-"))
3491         filename = "pipe:";
3492
3493     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3494     if (!oc) {
3495         print_error(filename, err);
3496         exit_program(1);
3497     }
3498
3499     file_oformat= oc->oformat;
3500
3501     if (!strcmp(file_oformat->name, "ffm") &&
3502         av_strstart(filename, "http:", NULL)) {
3503         /* special case for files sent to ffserver: we get the stream
3504            parameters from ffserver */
3505         int err = read_ffserver_streams(o, oc, filename);
3506         if (err < 0) {
3507             print_error(filename, err);
3508             exit_program(1);
3509         }
3510     } else if (!o->nb_stream_maps) {
3511         /* pick the "best" stream of each type */
3512 #define NEW_STREAM(type, index)\
3513         if (index >= 0) {\
3514             ost = new_ ## type ## _stream(o, oc);\
3515             ost->source_index = index;\
3516             ost->sync_ist     = &input_streams[index];\
3517             input_streams[index].discard = 0;\
3518         }
3519
3520         /* video: highest resolution */
3521         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3522             int area = 0, idx = -1;
3523             for (i = 0; i < nb_input_streams; i++) {
3524                 ist = &input_streams[i];
3525                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3526                     ist->st->codec->width * ist->st->codec->height > area) {
3527                     area = ist->st->codec->width * ist->st->codec->height;
3528                     idx = i;
3529                 }
3530             }
3531             NEW_STREAM(video, idx);
3532         }
3533
3534         /* audio: most channels */
3535         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3536             int channels = 0, idx = -1;
3537             for (i = 0; i < nb_input_streams; i++) {
3538                 ist = &input_streams[i];
3539                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3540                     ist->st->codec->channels > channels) {
3541                     channels = ist->st->codec->channels;
3542                     idx = i;
3543                 }
3544             }
3545             NEW_STREAM(audio, idx);
3546         }
3547
3548         /* subtitles: pick first */
3549         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {
3550             for (i = 0; i < nb_input_streams; i++)
3551                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3552                     NEW_STREAM(subtitle, i);
3553                     break;
3554                 }
3555         }
3556         /* do something with data? */
3557     } else {
3558         for (i = 0; i < o->nb_stream_maps; i++) {
3559             StreamMap *map = &o->stream_maps[i];
3560
3561             if (map->disabled)
3562                 continue;
3563
3564             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3565             switch (ist->st->codec->codec_type) {
3566             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3567             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3568             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3569             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3570             default:
3571                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3572                        map->file_index, map->stream_index);
3573                 exit_program(1);
3574             }
3575
3576             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3577             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3578                                            map->sync_stream_index];
3579             ist->discard = 0;
3580         }
3581     }
3582
3583     output_files = grow_array(output_files, sizeof(*output_files), &nb_output_files, nb_output_files + 1);
3584     output_files[nb_output_files - 1].ctx       = oc;
3585     output_files[nb_output_files - 1].ost_index = nb_output_streams - oc->nb_streams;
3586     output_files[nb_output_files - 1].recording_time = o->recording_time;
3587     output_files[nb_output_files - 1].start_time     = o->start_time;
3588     output_files[nb_output_files - 1].limit_filesize = o->limit_filesize;
3589     av_dict_copy(&output_files[nb_output_files - 1].opts, format_opts, 0);
3590
3591     /* check filename in case of an image number is expected */
3592     if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3593         if (!av_filename_number_test(oc->filename)) {
3594             print_error(oc->filename, AVERROR(EINVAL));
3595             exit_program(1);
3596         }
3597     }
3598
3599     if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3600         /* test if it already exists to avoid loosing precious files */
3601         if (!file_overwrite &&
3602             (strchr(filename, ':') == NULL ||
3603              filename[1] == ':' ||
3604              av_strstart(filename, "file:", NULL))) {
3605             if (avio_check(filename, 0) == 0) {
3606                 if (!using_stdin) {
3607                     fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3608                     fflush(stderr);
3609                     if (!read_yesno()) {
3610                         fprintf(stderr, "Not overwriting - exiting\n");
3611                         exit_program(1);
3612                     }
3613                 }
3614                 else {
3615                     fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3616                     exit_program(1);
3617                 }
3618             }
3619         }
3620
3621         /* open the file */
3622         if ((err = avio_open(&oc->pb, filename, AVIO_FLAG_WRITE)) < 0) {
3623             print_error(filename, err);
3624             exit_program(1);
3625         }
3626     }
3627
3628     oc->preload   = (int)(o->mux_preload   * AV_TIME_BASE);
3629     oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
3630
3631     /* copy chapters */
3632     if (o->chapters_input_file >= nb_input_files) {
3633         if (o->chapters_input_file == INT_MAX) {
3634             /* copy chapters from the first input file that has them*/
3635             o->chapters_input_file = -1;
3636             for (i = 0; i < nb_input_files; i++)
3637                 if (input_files[i].ctx->nb_chapters) {
3638                     o->chapters_input_file = i;
3639                     break;
3640                 }
3641         } else {
3642             av_log(NULL, AV_LOG_ERROR, "Invalid input file index %d in chapter mapping.\n",
3643                    o->chapters_input_file);
3644             exit_program(1);
3645         }
3646     }
3647     if (o->chapters_input_file >= 0)
3648         copy_chapters(&input_files[o->chapters_input_file], &output_files[nb_output_files - 1],
3649                       o->metadata_chapters_manual);
3650
3651     /* copy metadata */
3652     for (i = 0; i < o->nb_meta_data_maps; i++) {