smacker: fix a few off by 1 errors
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/buffersink.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "ffmpeg";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
113
114 static int frame_bits_per_raw_sample = 0;
115 static int video_discard = 0;
116 static int same_quant = 0;
117 static int do_deinterlace = 0;
118 static int intra_dc_precision = 8;
119 static int loop_input = 0;
120 static int loop_output = AVFMT_NOOUTPUTLOOP;
121 static int qp_hist = 0;
122 static int intra_only = 0;
123 static const char *video_codec_name    = NULL;
124 static const char *audio_codec_name    = NULL;
125 static const char *subtitle_codec_name = NULL;
126
127 static int file_overwrite = 0;
128 static int do_benchmark = 0;
129 static int do_hex_dump = 0;
130 static int do_pkt_dump = 0;
131 static int do_pass = 0;
132 static const char *pass_logfilename_prefix;
133 static int video_sync_method= -1;
134 static int audio_sync_method= 0;
135 static float audio_drift_threshold= 0.1;
136 static int copy_ts= 0;
137 static int copy_tb= 0;
138 static int opt_shortest = 0;
139 static char *vstats_filename;
140 static FILE *vstats_file;
141 static int copy_initial_nonkeyframes = 0;
142
143 static int audio_volume = 256;
144
145 static int exit_on_error = 0;
146 static int using_stdin = 0;
147 static int verbose = 1;
148 static int run_as_daemon  = 0;
149 static int q_pressed = 0;
150 static int64_t video_size = 0;
151 static int64_t audio_size = 0;
152 static int64_t extra_size = 0;
153 static int nb_frames_dup = 0;
154 static int nb_frames_drop = 0;
155 static int input_sync;
156
157 static float dts_delta_threshold = 10;
158
159 static uint8_t *audio_buf;
160 static uint8_t *audio_out;
161 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
162
163 static short *samples;
164 static uint8_t *input_tmp= NULL;
165
166 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
167
168 typedef struct InputStream {
169     int file_index;
170     AVStream *st;
171     int discard;             /* true if stream data should be discarded */
172     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
173     AVCodec *dec;
174
175     int64_t       start;     /* time when read started */
176     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
177                                 is not defined */
178     int64_t       pts;       /* current pts */
179     double ts_scale;
180     int is_start;            /* is 1 at the start and after a discontinuity */
181     int showed_multi_packet_warning;
182     AVDictionary *opts;
183 } InputStream;
184
185 typedef struct InputFile {
186     AVFormatContext *ctx;
187     int eof_reached;      /* true if eof reached */
188     int ist_index;        /* index of first stream in ist_table */
189     int buffer_size;      /* current total buffer size */
190     int64_t ts_offset;
191     int nb_streams;       /* number of stream that avconv is aware of; may be different
192                              from ctx.nb_streams if new streams appear during av_read_frame() */
193     int rate_emu;
194 } InputFile;
195
196 typedef struct OutputStream {
197     int file_index;          /* file index */
198     int index;               /* stream index in the output file */
199     int source_index;        /* InputStream index */
200     AVStream *st;            /* stream in the output file */
201     int encoding_needed;     /* true if encoding needed for this stream */
202     int frame_number;
203     /* input pts and corresponding output pts
204        for A/V sync */
205     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
206     struct InputStream *sync_ist; /* input stream to sync against */
207     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
208     AVBitStreamFilterContext *bitstream_filters;
209     AVCodec *enc;
210     int64_t max_frames;
211
212     /* video only */
213     int video_resample;
214     AVFrame resample_frame;              /* temporary frame for image resampling */
215     struct SwsContext *img_resample_ctx; /* for image resampling */
216     int resample_height;
217     int resample_width;
218     int resample_pix_fmt;
219     AVRational frame_rate;
220     int force_fps;
221     int top_field_first;
222
223     float frame_aspect_ratio;
224
225     /* forced key frames */
226     int64_t *forced_kf_pts;
227     int forced_kf_count;
228     int forced_kf_index;
229
230     /* audio only */
231     int audio_resample;
232     ReSampleContext *resample; /* for audio resampling */
233     int resample_sample_fmt;
234     int resample_channels;
235     int resample_sample_rate;
236     int reformat_pair;
237     AVAudioConvert *reformat_ctx;
238     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
239     FILE *logfile;
240
241 #if CONFIG_AVFILTER
242     AVFilterContext *output_video_filter;
243     AVFilterContext *input_video_filter;
244     AVFilterBufferRef *picref;
245     char *avfilter;
246     AVFilterGraph *graph;
247 #endif
248
249    int sws_flags;
250    AVDictionary *opts;
251    int is_past_recording_time;
252 } OutputStream;
253
254
255 #if HAVE_TERMIOS_H
256
257 /* init terminal so that we can grab keys */
258 static struct termios oldtty;
259 #endif
260
261 typedef struct OutputFile {
262     AVFormatContext *ctx;
263     AVDictionary *opts;
264     int ost_index;       /* index of the first stream in output_streams */
265     int64_t recording_time; /* desired length of the resulting file in microseconds */
266     int64_t start_time;     /* start time in microseconds */
267     uint64_t limit_filesize;
268 } OutputFile;
269
270 static InputStream *input_streams = NULL;
271 static int         nb_input_streams = 0;
272 static InputFile   *input_files   = NULL;
273 static int         nb_input_files   = 0;
274
275 static OutputStream *output_streams = NULL;
276 static int        nb_output_streams = 0;
277 static OutputFile   *output_files   = NULL;
278 static int        nb_output_files   = 0;
279
280 typedef struct OptionsContext {
281     /* input/output options */
282     int64_t start_time;
283     const char *format;
284
285     SpecifierOpt *codec_names;
286     int        nb_codec_names;
287     SpecifierOpt *audio_channels;
288     int        nb_audio_channels;
289     SpecifierOpt *audio_sample_rate;
290     int        nb_audio_sample_rate;
291     SpecifierOpt *frame_rates;
292     int        nb_frame_rates;
293     SpecifierOpt *frame_sizes;
294     int        nb_frame_sizes;
295     SpecifierOpt *frame_pix_fmts;
296     int        nb_frame_pix_fmts;
297
298     /* input options */
299     int64_t input_ts_offset;
300     int rate_emu;
301
302     SpecifierOpt *ts_scale;
303     int        nb_ts_scale;
304
305     /* output options */
306     StreamMap *stream_maps;
307     int     nb_stream_maps;
308     /* first item specifies output metadata, second is input */
309     MetadataMap (*meta_data_maps)[2];
310     int nb_meta_data_maps;
311     int metadata_global_manual;
312     int metadata_streams_manual;
313     int metadata_chapters_manual;
314
315     int chapters_input_file;
316
317     int64_t recording_time;
318     uint64_t limit_filesize;
319     float mux_preload;
320     float mux_max_delay;
321
322     int video_disable;
323     int audio_disable;
324     int subtitle_disable;
325     int data_disable;
326
327     /* indexed by output file stream index */
328     int   *streamid_map;
329     int nb_streamid_map;
330
331     SpecifierOpt *metadata;
332     int        nb_metadata;
333     SpecifierOpt *max_frames;
334     int        nb_max_frames;
335     SpecifierOpt *bitstream_filters;
336     int        nb_bitstream_filters;
337     SpecifierOpt *codec_tags;
338     int        nb_codec_tags;
339     SpecifierOpt *sample_fmts;
340     int        nb_sample_fmts;
341     SpecifierOpt *qscale;
342     int        nb_qscale;
343     SpecifierOpt *forced_key_frames;
344     int        nb_forced_key_frames;
345     SpecifierOpt *force_fps;
346     int        nb_force_fps;
347     SpecifierOpt *frame_aspect_ratios;
348     int        nb_frame_aspect_ratios;
349     SpecifierOpt *rc_overrides;
350     int        nb_rc_overrides;
351     SpecifierOpt *intra_matrices;
352     int        nb_intra_matrices;
353     SpecifierOpt *inter_matrices;
354     int        nb_inter_matrices;
355     SpecifierOpt *top_field_first;
356     int        nb_top_field_first;
357 #if CONFIG_AVFILTER
358     SpecifierOpt *filters;
359     int        nb_filters;
360 #endif
361 } OptionsContext;
362
363 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
364 {\
365     int i, ret;\
366     for (i = 0; i < o->nb_ ## name; i++) {\
367         char *spec = o->name[i].specifier;\
368         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
369             outvar = o->name[i].u.type;\
370         else if (ret < 0)\
371             exit_program(1);\
372     }\
373 }
374
375 static void reset_options(OptionsContext *o, int is_input)
376 {
377     const OptionDef *po = options;
378     OptionsContext bak= *o;
379
380     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
381     while (po->name) {
382         void *dst = (uint8_t*)o + po->u.off;
383
384         if (po->flags & OPT_SPEC) {
385             SpecifierOpt **so = dst;
386             int i, *count = (int*)(so + 1);
387             for (i = 0; i < *count; i++) {
388                 av_freep(&(*so)[i].specifier);
389                 if (po->flags & OPT_STRING)
390                     av_freep(&(*so)[i].u.str);
391             }
392             av_freep(so);
393             *count = 0;
394         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
395             av_freep(dst);
396         po++;
397     }
398
399     av_freep(&o->stream_maps);
400     av_freep(&o->meta_data_maps);
401     av_freep(&o->streamid_map);
402
403     memset(o, 0, sizeof(*o));
404
405     if(is_input) o->recording_time = bak.recording_time;
406     else         o->recording_time = INT64_MAX;
407     o->mux_preload    = 0.5;
408     o->mux_max_delay  = 0.7;
409     o->limit_filesize = UINT64_MAX;
410     o->chapters_input_file = INT_MAX;
411
412     uninit_opts();
413     init_opts();
414 }
415
416 #if CONFIG_AVFILTER
417
418 static int configure_video_filters(InputStream *ist, OutputStream *ost)
419 {
420     AVFilterContext *last_filter, *filter;
421     /** filter graph containing all filters including input & output */
422     AVCodecContext *codec = ost->st->codec;
423     AVCodecContext *icodec = ist->st->codec;
424     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
425     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
426     AVRational sample_aspect_ratio;
427     char args[255];
428     int ret;
429
430     ost->graph = avfilter_graph_alloc();
431
432     if (ist->st->sample_aspect_ratio.num){
433         sample_aspect_ratio = ist->st->sample_aspect_ratio;
434     }else
435         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
436
437     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
438              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
439              sample_aspect_ratio.num, sample_aspect_ratio.den);
440
441     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
442                                        "src", args, NULL, ost->graph);
443     if (ret < 0)
444         return ret;
445 #if FF_API_OLD_VSINK_API
446     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
447                                        "out", NULL, pix_fmts, ost->graph);
448 #else
449     buffersink_params->pixel_fmts = pix_fmts;
450     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
451                                        "out", NULL, buffersink_params, ost->graph);
452 #endif
453     av_freep(&buffersink_params);
454     if (ret < 0)
455         return ret;
456     last_filter = ost->input_video_filter;
457
458     if (codec->width  != icodec->width || codec->height != icodec->height) {
459         snprintf(args, 255, "%d:%d:flags=0x%X",
460                  codec->width,
461                  codec->height,
462                  ost->sws_flags);
463         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
464                                                 NULL, args, NULL, ost->graph)) < 0)
465             return ret;
466         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
467             return ret;
468         last_filter = filter;
469     }
470
471     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
472     ost->graph->scale_sws_opts = av_strdup(args);
473
474     if (ost->avfilter) {
475         AVFilterInOut *outputs = avfilter_inout_alloc();
476         AVFilterInOut *inputs  = avfilter_inout_alloc();
477
478         outputs->name    = av_strdup("in");
479         outputs->filter_ctx = last_filter;
480         outputs->pad_idx = 0;
481         outputs->next    = NULL;
482
483         inputs->name    = av_strdup("out");
484         inputs->filter_ctx = ost->output_video_filter;
485         inputs->pad_idx = 0;
486         inputs->next    = NULL;
487
488         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
489             return ret;
490         av_freep(&ost->avfilter);
491     } else {
492         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
493             return ret;
494     }
495
496     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
497         return ret;
498
499     codec->width  = ost->output_video_filter->inputs[0]->w;
500     codec->height = ost->output_video_filter->inputs[0]->h;
501     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
502         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
503         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
504         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
505
506     return 0;
507 }
508 #endif /* CONFIG_AVFILTER */
509
510 static void term_exit(void)
511 {
512     av_log(NULL, AV_LOG_QUIET, "%s", "");
513 #if HAVE_TERMIOS_H
514     if(!run_as_daemon)
515         tcsetattr (0, TCSANOW, &oldtty);
516 #endif
517 }
518
519 static volatile int received_sigterm = 0;
520
521 static void sigterm_handler(int sig)
522 {
523     received_sigterm = sig;
524     q_pressed++;
525     term_exit();
526 }
527
528 static void term_init(void)
529 {
530 #if HAVE_TERMIOS_H
531     if(!run_as_daemon){
532     struct termios tty;
533
534     tcgetattr (0, &tty);
535     oldtty = tty;
536     atexit(term_exit);
537
538     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
539                           |INLCR|IGNCR|ICRNL|IXON);
540     tty.c_oflag |= OPOST;
541     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
542     tty.c_cflag &= ~(CSIZE|PARENB);
543     tty.c_cflag |= CS8;
544     tty.c_cc[VMIN] = 1;
545     tty.c_cc[VTIME] = 0;
546
547     tcsetattr (0, TCSANOW, &tty);
548     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
549     }
550 #endif
551
552     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
553     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
554 #ifdef SIGXCPU
555     signal(SIGXCPU, sigterm_handler);
556 #endif
557 }
558
559 /* read a key without blocking */
560 static int read_key(void)
561 {
562     unsigned char ch;
563 #if HAVE_TERMIOS_H
564     int n = 1;
565     struct timeval tv;
566     fd_set rfds;
567
568     if(run_as_daemon)
569         return -1;
570
571     FD_ZERO(&rfds);
572     FD_SET(0, &rfds);
573     tv.tv_sec = 0;
574     tv.tv_usec = 0;
575     n = select(1, &rfds, NULL, NULL, &tv);
576     if (n > 0) {
577         n = read(0, &ch, 1);
578         if (n == 1)
579             return ch;
580
581         return n;
582     }
583 #elif HAVE_KBHIT
584 #    if HAVE_PEEKNAMEDPIPE
585     static int is_pipe;
586     static HANDLE input_handle;
587     DWORD dw, nchars;
588     if(!input_handle){
589         input_handle = GetStdHandle(STD_INPUT_HANDLE);
590         is_pipe = !GetConsoleMode(input_handle, &dw);
591     }
592
593     if (stdin->_cnt > 0) {
594         read(0, &ch, 1);
595         return ch;
596     }
597     if (is_pipe) {
598         /* When running under a GUI, you will end here. */
599         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
600             return -1;
601         //Read it
602         if(nchars != 0) {
603             read(0, &ch, 1);
604             return ch;
605         }else{
606             return -1;
607         }
608     }
609 #    endif
610     if(kbhit())
611         return(getch());
612 #endif
613     return -1;
614 }
615
616 static int decode_interrupt_cb(void)
617 {
618     q_pressed += read_key() == 'q';
619     return q_pressed > 1;
620 }
621
622 void exit_program(int ret)
623 {
624     int i;
625
626     /* close files */
627     for(i=0;i<nb_output_files;i++) {
628         AVFormatContext *s = output_files[i].ctx;
629         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
630             avio_close(s->pb);
631         avformat_free_context(s);
632         av_dict_free(&output_files[i].opts);
633     }
634     for(i=0;i<nb_input_files;i++) {
635         av_close_input_file(input_files[i].ctx);
636     }
637     for (i = 0; i < nb_input_streams; i++)
638         av_dict_free(&input_streams[i].opts);
639
640     if (vstats_file)
641         fclose(vstats_file);
642     av_free(vstats_filename);
643
644     av_freep(&input_streams);
645     av_freep(&input_files);
646     av_freep(&output_streams);
647     av_freep(&output_files);
648
649     uninit_opts();
650     av_free(audio_buf);
651     av_free(audio_out);
652     allocated_audio_buf_size= allocated_audio_out_size= 0;
653     av_free(samples);
654
655 #if CONFIG_AVFILTER
656     avfilter_uninit();
657 #endif
658
659     av_freep(&input_tmp);
660
661     if (received_sigterm) {
662         fprintf(stderr,
663             "Received signal %d: terminating.\n",
664             (int) received_sigterm);
665         exit (255);
666     }
667
668     exit(ret); /* not all OS-es handle main() return value */
669 }
670
671 static void assert_avoptions(AVDictionary *m)
672 {
673     AVDictionaryEntry *t;
674     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
675         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
676         exit_program(1);
677     }
678 }
679
680 static void assert_codec_experimental(AVCodecContext *c, int encoder)
681 {
682     const char *codec_string = encoder ? "encoder" : "decoder";
683     AVCodec *codec;
684     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
685         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
686         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
687                 "results.\nAdd '-strict experimental' if you want to use it.\n",
688                 codec_string, c->codec->name);
689         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
690         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
691             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
692                    codec_string, codec->name);
693         exit_program(1);
694     }
695 }
696
697 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
698 {
699     if(codec && codec->sample_fmts){
700         const enum AVSampleFormat *p= codec->sample_fmts;
701         for(; *p!=-1; p++){
702             if(*p == st->codec->sample_fmt)
703                 break;
704         }
705         if (*p == -1) {
706             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
707                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
708             if(av_get_sample_fmt_name(st->codec->sample_fmt))
709             av_log(NULL, AV_LOG_WARNING,
710                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
711                    av_get_sample_fmt_name(st->codec->sample_fmt),
712                    codec->name,
713                    av_get_sample_fmt_name(codec->sample_fmts[0]));
714             st->codec->sample_fmt = codec->sample_fmts[0];
715         }
716     }
717 }
718
719 static void choose_sample_rate(AVStream *st, AVCodec *codec)
720 {
721     if(codec && codec->supported_samplerates){
722         const int *p= codec->supported_samplerates;
723         int best=0;
724         int best_dist=INT_MAX;
725         for(; *p; p++){
726             int dist= abs(st->codec->sample_rate - *p);
727             if(dist < best_dist){
728                 best_dist= dist;
729                 best= *p;
730             }
731         }
732         if(best_dist){
733             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
734         }
735         st->codec->sample_rate= best;
736     }
737 }
738
739 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
740 {
741     if(codec && codec->pix_fmts){
742         const enum PixelFormat *p= codec->pix_fmts;
743         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
744             if(st->codec->codec_id==CODEC_ID_MJPEG){
745                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
746             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
747                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
748             }
749         }
750         for(; *p!=-1; p++){
751             if(*p == st->codec->pix_fmt)
752                 break;
753         }
754         if (*p == -1) {
755             if(st->codec->pix_fmt != PIX_FMT_NONE)
756                 av_log(NULL, AV_LOG_WARNING,
757                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
758                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
759                         codec->name,
760                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
761             st->codec->pix_fmt = codec->pix_fmts[0];
762         }
763     }
764 }
765
766 static double get_sync_ipts(const OutputStream *ost)
767 {
768     const InputStream *ist = ost->sync_ist;
769     OutputFile *of = &output_files[ost->file_index];
770     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
771 }
772
773 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
774 {
775     int ret;
776
777     while(bsfc){
778         AVPacket new_pkt= *pkt;
779         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
780                                           &new_pkt.data, &new_pkt.size,
781                                           pkt->data, pkt->size,
782                                           pkt->flags & AV_PKT_FLAG_KEY);
783         if(a>0){
784             av_free_packet(pkt);
785             new_pkt.destruct= av_destruct_packet;
786         } else if(a<0){
787             fprintf(stderr, "%s failed for stream %d, codec %s",
788                     bsfc->filter->name, pkt->stream_index,
789                     avctx->codec ? avctx->codec->name : "copy");
790             print_error("", a);
791             if (exit_on_error)
792                 exit_program(1);
793         }
794         *pkt= new_pkt;
795
796         bsfc= bsfc->next;
797     }
798
799     ret= av_interleaved_write_frame(s, pkt);
800     if(ret < 0){
801         print_error("av_interleaved_write_frame()", ret);
802         exit_program(1);
803     }
804 }
805
806 static void do_audio_out(AVFormatContext *s,
807                          OutputStream *ost,
808                          InputStream *ist,
809                          unsigned char *buf, int size)
810 {
811     uint8_t *buftmp;
812     int64_t audio_out_size, audio_buf_size;
813     int64_t allocated_for_size= size;
814
815     int size_out, frame_bytes, ret, resample_changed;
816     AVCodecContext *enc= ost->st->codec;
817     AVCodecContext *dec= ist->st->codec;
818     int osize = av_get_bytes_per_sample(enc->sample_fmt);
819     int isize = av_get_bytes_per_sample(dec->sample_fmt);
820     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
821
822 need_realloc:
823     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
824     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
825     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
826     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
827     audio_buf_size*= osize*enc->channels;
828
829     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
830     if(coded_bps > 8*osize)
831         audio_out_size= audio_out_size * coded_bps / (8*osize);
832     audio_out_size += FF_MIN_BUFFER_SIZE;
833
834     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
835         fprintf(stderr, "Buffer sizes too large\n");
836         exit_program(1);
837     }
838
839     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
840     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
841     if (!audio_buf || !audio_out){
842         fprintf(stderr, "Out of memory in do_audio_out\n");
843         exit_program(1);
844     }
845
846     if (enc->channels != dec->channels)
847         ost->audio_resample = 1;
848
849     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
850                        ost->resample_channels    != dec->channels   ||
851                        ost->resample_sample_rate != dec->sample_rate;
852
853     if ((ost->audio_resample && !ost->resample) || resample_changed) {
854         if (resample_changed) {
855             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
856                    ist->file_index, ist->st->index,
857                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
858                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
859             ost->resample_sample_fmt  = dec->sample_fmt;
860             ost->resample_channels    = dec->channels;
861             ost->resample_sample_rate = dec->sample_rate;
862             if (ost->resample)
863                 audio_resample_close(ost->resample);
864         }
865         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
866         if (audio_sync_method <= 1 &&
867             ost->resample_sample_fmt  == enc->sample_fmt &&
868             ost->resample_channels    == enc->channels   &&
869             ost->resample_sample_rate == enc->sample_rate) {
870             ost->resample = NULL;
871             ost->audio_resample = 0;
872         } else {
873             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
874                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
875             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
876                                                    enc->sample_rate, dec->sample_rate,
877                                                    enc->sample_fmt,  dec->sample_fmt,
878                                                    16, 10, 0, 0.8);
879             if (!ost->resample) {
880                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
881                         dec->channels, dec->sample_rate,
882                         enc->channels, enc->sample_rate);
883                 exit_program(1);
884             }
885         }
886     }
887
888 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
889     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
890         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
891         if (ost->reformat_ctx)
892             av_audio_convert_free(ost->reformat_ctx);
893         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
894                                                    dec->sample_fmt, 1, NULL, 0);
895         if (!ost->reformat_ctx) {
896             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
897                 av_get_sample_fmt_name(dec->sample_fmt),
898                 av_get_sample_fmt_name(enc->sample_fmt));
899             exit_program(1);
900         }
901         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
902     }
903
904     if(audio_sync_method){
905         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
906                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
907         double idelta= delta*dec->sample_rate / enc->sample_rate;
908         int byte_delta= ((int)idelta)*2*dec->channels;
909
910         //FIXME resample delay
911         if(fabs(delta) > 50){
912             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
913                 if(byte_delta < 0){
914                     byte_delta= FFMAX(byte_delta, -size);
915                     size += byte_delta;
916                     buf  -= byte_delta;
917                     if(verbose > 2)
918                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
919                     if(!size)
920                         return;
921                     ist->is_start=0;
922                 }else{
923                     input_tmp= av_realloc(input_tmp, byte_delta + size);
924
925                     if(byte_delta > allocated_for_size - size){
926                         allocated_for_size= byte_delta + (int64_t)size;
927                         goto need_realloc;
928                     }
929                     ist->is_start=0;
930
931                     memset(input_tmp, 0, byte_delta);
932                     memcpy(input_tmp + byte_delta, buf, size);
933                     buf= input_tmp;
934                     size += byte_delta;
935                     if(verbose > 2)
936                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
937                 }
938             }else if(audio_sync_method>1){
939                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
940                 av_assert0(ost->audio_resample);
941                 if(verbose > 2)
942                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
943 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
944                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
945             }
946         }
947     }else
948         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
949                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
950
951     if (ost->audio_resample) {
952         buftmp = audio_buf;
953         size_out = audio_resample(ost->resample,
954                                   (short *)buftmp, (short *)buf,
955                                   size / (dec->channels * isize));
956         size_out = size_out * enc->channels * osize;
957     } else {
958         buftmp = buf;
959         size_out = size;
960     }
961
962     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
963         const void *ibuf[6]= {buftmp};
964         void *obuf[6]= {audio_buf};
965         int istride[6]= {isize};
966         int ostride[6]= {osize};
967         int len= size_out/istride[0];
968         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
969             printf("av_audio_convert() failed\n");
970             if (exit_on_error)
971                 exit_program(1);
972             return;
973         }
974         buftmp = audio_buf;
975         size_out = len*osize;
976     }
977
978     /* now encode as many frames as possible */
979     if (enc->frame_size > 1) {
980         /* output resampled raw samples */
981         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
982             fprintf(stderr, "av_fifo_realloc2() failed\n");
983             exit_program(1);
984         }
985         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
986
987         frame_bytes = enc->frame_size * osize * enc->channels;
988
989         while (av_fifo_size(ost->fifo) >= frame_bytes) {
990             AVPacket pkt;
991             av_init_packet(&pkt);
992
993             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
994
995             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
996
997             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
998                                        (short *)audio_buf);
999             if (ret < 0) {
1000                 fprintf(stderr, "Audio encoding failed\n");
1001                 exit_program(1);
1002             }
1003             audio_size += ret;
1004             pkt.stream_index= ost->index;
1005             pkt.data= audio_out;
1006             pkt.size= ret;
1007             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1008                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1009             pkt.flags |= AV_PKT_FLAG_KEY;
1010             write_frame(s, &pkt, enc, ost->bitstream_filters);
1011
1012             ost->sync_opts += enc->frame_size;
1013         }
1014     } else {
1015         AVPacket pkt;
1016         av_init_packet(&pkt);
1017
1018         ost->sync_opts += size_out / (osize * enc->channels);
1019
1020         /* output a pcm frame */
1021         /* determine the size of the coded buffer */
1022         size_out /= osize;
1023         if (coded_bps)
1024             size_out = size_out*coded_bps/8;
1025
1026         if(size_out > audio_out_size){
1027             fprintf(stderr, "Internal error, buffer size too small\n");
1028             exit_program(1);
1029         }
1030
1031         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1032         ret = avcodec_encode_audio(enc, audio_out, size_out,
1033                                    (short *)buftmp);
1034         if (ret < 0) {
1035             fprintf(stderr, "Audio encoding failed\n");
1036             exit_program(1);
1037         }
1038         audio_size += ret;
1039         pkt.stream_index= ost->index;
1040         pkt.data= audio_out;
1041         pkt.size= ret;
1042         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1043             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1044         pkt.flags |= AV_PKT_FLAG_KEY;
1045         write_frame(s, &pkt, enc, ost->bitstream_filters);
1046     }
1047 }
1048
1049 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1050 {
1051     AVCodecContext *dec;
1052     AVPicture *picture2;
1053     AVPicture picture_tmp;
1054     uint8_t *buf = 0;
1055
1056     dec = ist->st->codec;
1057
1058     /* deinterlace : must be done before any resize */
1059     if (do_deinterlace) {
1060         int size;
1061
1062         /* create temporary picture */
1063         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1064         buf = av_malloc(size);
1065         if (!buf)
1066             return;
1067
1068         picture2 = &picture_tmp;
1069         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1070
1071         if(avpicture_deinterlace(picture2, picture,
1072                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1073             /* if error, do not deinterlace */
1074             fprintf(stderr, "Deinterlacing failed\n");
1075             av_free(buf);
1076             buf = NULL;
1077             picture2 = picture;
1078         }
1079     } else {
1080         picture2 = picture;
1081     }
1082
1083     if (picture != picture2)
1084         *picture = *picture2;
1085     *bufp = buf;
1086 }
1087
1088 static void do_subtitle_out(AVFormatContext *s,
1089                             OutputStream *ost,
1090                             InputStream *ist,
1091                             AVSubtitle *sub,
1092                             int64_t pts)
1093 {
1094     static uint8_t *subtitle_out = NULL;
1095     int subtitle_out_max_size = 1024 * 1024;
1096     int subtitle_out_size, nb, i;
1097     AVCodecContext *enc;
1098     AVPacket pkt;
1099
1100     if (pts == AV_NOPTS_VALUE) {
1101         fprintf(stderr, "Subtitle packets must have a pts\n");
1102         if (exit_on_error)
1103             exit_program(1);
1104         return;
1105     }
1106
1107     enc = ost->st->codec;
1108
1109     if (!subtitle_out) {
1110         subtitle_out = av_malloc(subtitle_out_max_size);
1111     }
1112
1113     /* Note: DVB subtitle need one packet to draw them and one other
1114        packet to clear them */
1115     /* XXX: signal it in the codec context ? */
1116     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1117         nb = 2;
1118     else
1119         nb = 1;
1120
1121     for(i = 0; i < nb; i++) {
1122         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1123         // start_display_time is required to be 0
1124         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1125         sub->end_display_time -= sub->start_display_time;
1126         sub->start_display_time = 0;
1127         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1128                                                     subtitle_out_max_size, sub);
1129         if (subtitle_out_size < 0) {
1130             fprintf(stderr, "Subtitle encoding failed\n");
1131             exit_program(1);
1132         }
1133
1134         av_init_packet(&pkt);
1135         pkt.stream_index = ost->index;
1136         pkt.data = subtitle_out;
1137         pkt.size = subtitle_out_size;
1138         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1139         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1140             /* XXX: the pts correction is handled here. Maybe handling
1141                it in the codec would be better */
1142             if (i == 0)
1143                 pkt.pts += 90 * sub->start_display_time;
1144             else
1145                 pkt.pts += 90 * sub->end_display_time;
1146         }
1147         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1148     }
1149 }
1150
1151 static int bit_buffer_size= 1024*256;
1152 static uint8_t *bit_buffer= NULL;
1153
1154 static void do_video_resample(OutputStream *ost,
1155                               InputStream *ist,
1156                               AVFrame *in_picture,
1157                               AVFrame **out_picture)
1158 {
1159 #if CONFIG_AVFILTER
1160     *out_picture = in_picture;
1161 #else
1162     AVCodecContext *dec = ist->st->codec;
1163     AVCodecContext *enc = ost->st->codec;
1164     int resample_changed = ost->resample_width   != dec->width  ||
1165                            ost->resample_height  != dec->height ||
1166                            ost->resample_pix_fmt != dec->pix_fmt;
1167
1168     *out_picture = in_picture;
1169     if (resample_changed) {
1170         av_log(NULL, AV_LOG_INFO,
1171                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1172                ist->file_index, ist->st->index,
1173                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1174                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1175         ost->resample_width   = dec->width;
1176         ost->resample_height  = dec->height;
1177         ost->resample_pix_fmt = dec->pix_fmt;
1178     }
1179
1180     ost->video_resample = dec->width   != enc->width  ||
1181                           dec->height  != enc->height ||
1182                           dec->pix_fmt != enc->pix_fmt;
1183
1184     if (ost->video_resample) {
1185         *out_picture = &ost->resample_frame;
1186         if (!ost->img_resample_ctx || resample_changed) {
1187             /* initialize the destination picture */
1188             if (!ost->resample_frame.data[0]) {
1189                 avcodec_get_frame_defaults(&ost->resample_frame);
1190                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1191                                     enc->width, enc->height)) {
1192                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1193                     exit_program(1);
1194                 }
1195             }
1196             /* initialize a new scaler context */
1197             sws_freeContext(ost->img_resample_ctx);
1198             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1199                                                    enc->width, enc->height, enc->pix_fmt,
1200                                                    ost->sws_flags, NULL, NULL, NULL);
1201             if (ost->img_resample_ctx == NULL) {
1202                 fprintf(stderr, "Cannot get resampling context\n");
1203                 exit_program(1);
1204             }
1205         }
1206         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1207               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1208     }
1209 #endif
1210 }
1211
1212
1213 static void do_video_out(AVFormatContext *s,
1214                          OutputStream *ost,
1215                          InputStream *ist,
1216                          AVFrame *in_picture,
1217                          int *frame_size, float quality)
1218 {
1219     int nb_frames, i, ret, format_video_sync;
1220     AVFrame *final_picture;
1221     AVCodecContext *enc;
1222     double sync_ipts;
1223
1224     enc = ost->st->codec;
1225
1226     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1227
1228     /* by default, we output a single frame */
1229     nb_frames = 1;
1230
1231     *frame_size = 0;
1232
1233     format_video_sync = video_sync_method;
1234     if (format_video_sync < 0)
1235         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1236
1237     if (format_video_sync) {
1238         double vdelta = sync_ipts - ost->sync_opts;
1239         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1240         if (vdelta < -1.1)
1241             nb_frames = 0;
1242         else if (format_video_sync == 2) {
1243             if(vdelta<=-0.6){
1244                 nb_frames=0;
1245             }else if(vdelta>0.6)
1246                 ost->sync_opts= lrintf(sync_ipts);
1247         }else if (vdelta > 1.1)
1248             nb_frames = lrintf(vdelta);
1249 //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);
1250         if (nb_frames == 0){
1251             ++nb_frames_drop;
1252             if (verbose>2)
1253                 fprintf(stderr, "*** drop!\n");
1254         }else if (nb_frames > 1) {
1255             nb_frames_dup += nb_frames - 1;
1256             if (verbose>2)
1257                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1258         }
1259     }else
1260         ost->sync_opts= lrintf(sync_ipts);
1261
1262     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1263     if (nb_frames <= 0)
1264         return;
1265
1266     do_video_resample(ost, ist, in_picture, &final_picture);
1267
1268     /* duplicates frame if needed */
1269     for(i=0;i<nb_frames;i++) {
1270         AVPacket pkt;
1271         av_init_packet(&pkt);
1272         pkt.stream_index= ost->index;
1273
1274         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1275             /* raw pictures are written as AVPicture structure to
1276                avoid any copies. We support temporarily the older
1277                method. */
1278             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1279             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1280             pkt.data= (uint8_t *)final_picture;
1281             pkt.size=  sizeof(AVPicture);
1282             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1283             pkt.flags |= AV_PKT_FLAG_KEY;
1284
1285             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1286         } else {
1287             AVFrame big_picture;
1288
1289             big_picture= *final_picture;
1290             /* better than nothing: use input picture interlaced
1291                settings */
1292             big_picture.interlaced_frame = in_picture->interlaced_frame;
1293             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1294                 if (ost->top_field_first == -1)
1295                     big_picture.top_field_first = in_picture->top_field_first;
1296                 else
1297                     big_picture.top_field_first = !!ost->top_field_first;
1298             }
1299
1300             /* handles same_quant here. This is not correct because it may
1301                not be a global option */
1302             big_picture.quality = quality;
1303             if (!enc->me_threshold)
1304                 big_picture.pict_type = 0;
1305 //            big_picture.pts = AV_NOPTS_VALUE;
1306             big_picture.pts= ost->sync_opts;
1307 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1308 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1309             if (ost->forced_kf_index < ost->forced_kf_count &&
1310                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1311                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1312                 ost->forced_kf_index++;
1313             }
1314             ret = avcodec_encode_video(enc,
1315                                        bit_buffer, bit_buffer_size,
1316                                        &big_picture);
1317             if (ret < 0) {
1318                 fprintf(stderr, "Video encoding failed\n");
1319                 exit_program(1);
1320             }
1321
1322             if(ret>0){
1323                 pkt.data= bit_buffer;
1324                 pkt.size= ret;
1325                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1326                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1327 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1328    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1329    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1330
1331                 if(enc->coded_frame->key_frame)
1332                     pkt.flags |= AV_PKT_FLAG_KEY;
1333                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1334                 *frame_size = ret;
1335                 video_size += ret;
1336                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1337                 //        enc->frame_number-1, ret, enc->pict_type);
1338                 /* if two pass, output log */
1339                 if (ost->logfile && enc->stats_out) {
1340                     fprintf(ost->logfile, "%s", enc->stats_out);
1341                 }
1342             }
1343         }
1344         ost->sync_opts++;
1345         ost->frame_number++;
1346     }
1347 }
1348
1349 static double psnr(double d)
1350 {
1351     return -10.0*log(d)/log(10.0);
1352 }
1353
1354 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1355                            int frame_size)
1356 {
1357     AVCodecContext *enc;
1358     int frame_number;
1359     double ti1, bitrate, avg_bitrate;
1360
1361     /* this is executed just the first time do_video_stats is called */
1362     if (!vstats_file) {
1363         vstats_file = fopen(vstats_filename, "w");
1364         if (!vstats_file) {
1365             perror("fopen");
1366             exit_program(1);
1367         }
1368     }
1369
1370     enc = ost->st->codec;
1371     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1372         frame_number = ost->frame_number;
1373         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1374         if (enc->flags&CODEC_FLAG_PSNR)
1375             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1376
1377         fprintf(vstats_file,"f_size= %6d ", frame_size);
1378         /* compute pts value */
1379         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1380         if (ti1 < 0.01)
1381             ti1 = 0.01;
1382
1383         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1384         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1385         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1386             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1387         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1388     }
1389 }
1390
1391 static void print_report(OutputFile *output_files,
1392                          OutputStream *ost_table, int nb_ostreams,
1393                          int is_last_report, int64_t timer_start)
1394 {
1395     char buf[1024];
1396     OutputStream *ost;
1397     AVFormatContext *oc;
1398     int64_t total_size;
1399     AVCodecContext *enc;
1400     int frame_number, vid, i;
1401     double bitrate;
1402     int64_t pts = INT64_MAX;
1403     static int64_t last_time = -1;
1404     static int qp_histogram[52];
1405
1406     if (!is_last_report) {
1407         int64_t cur_time;
1408         /* display the report every 0.5 seconds */
1409         cur_time = av_gettime();
1410         if (last_time == -1) {
1411             last_time = cur_time;
1412             return;
1413         }
1414         if ((cur_time - last_time) < 500000)
1415             return;
1416         last_time = cur_time;
1417     }
1418
1419
1420     oc = output_files[0].ctx;
1421
1422     total_size = avio_size(oc->pb);
1423     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1424         total_size= avio_tell(oc->pb);
1425
1426     buf[0] = '\0';
1427     vid = 0;
1428     for(i=0;i<nb_ostreams;i++) {
1429         float q = -1;
1430         ost = &ost_table[i];
1431         enc = ost->st->codec;
1432         if (!ost->st->stream_copy && enc->coded_frame)
1433             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1434         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1435             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1436         }
1437         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1438             float t = (av_gettime()-timer_start) / 1000000.0;
1439
1440             frame_number = ost->frame_number;
1441             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1442                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1443             if(is_last_report)
1444                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1445             if(qp_hist){
1446                 int j;
1447                 int qp = lrintf(q);
1448                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1449                     qp_histogram[qp]++;
1450                 for(j=0; j<32; j++)
1451                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1452             }
1453             if (enc->flags&CODEC_FLAG_PSNR){
1454                 int j;
1455                 double error, error_sum=0;
1456                 double scale, scale_sum=0;
1457                 char type[3]= {'Y','U','V'};
1458                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1459                 for(j=0; j<3; j++){
1460                     if(is_last_report){
1461                         error= enc->error[j];
1462                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1463                     }else{
1464                         error= enc->coded_frame->error[j];
1465                         scale= enc->width*enc->height*255.0*255.0;
1466                     }
1467                     if(j) scale/=4;
1468                     error_sum += error;
1469                     scale_sum += scale;
1470                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1471                 }
1472                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1473             }
1474             vid = 1;
1475         }
1476         /* compute min output value */
1477         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1478                                       ost->st->time_base, AV_TIME_BASE_Q));
1479     }
1480
1481     if (verbose > 0 || is_last_report) {
1482         int hours, mins, secs, us;
1483         secs = pts / AV_TIME_BASE;
1484         us = pts % AV_TIME_BASE;
1485         mins = secs / 60;
1486         secs %= 60;
1487         hours = mins / 60;
1488         mins %= 60;
1489
1490         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1491
1492         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1493                  "size=%8.0fkB time=", total_size / 1024.0);
1494         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1495                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1496                  (100 * us) / AV_TIME_BASE);
1497         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1498                  "bitrate=%6.1fkbits/s", bitrate);
1499
1500         if (nb_frames_dup || nb_frames_drop)
1501           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1502                   nb_frames_dup, nb_frames_drop);
1503
1504         if (verbose >= 0)
1505             fprintf(stderr, "%s    \r", buf);
1506
1507         fflush(stderr);
1508     }
1509
1510     if (is_last_report && verbose >= 0){
1511         int64_t raw= audio_size + video_size + extra_size;
1512         fprintf(stderr, "\n");
1513         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1514                 video_size/1024.0,
1515                 audio_size/1024.0,
1516                 extra_size/1024.0,
1517                 100.0*(total_size - raw)/raw
1518         );
1519     }
1520 }
1521
1522 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1523 {
1524     int fill_char = 0x00;
1525     if (sample_fmt == AV_SAMPLE_FMT_U8)
1526         fill_char = 0x80;
1527     memset(buf, fill_char, size);
1528 }
1529
1530 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1531 {
1532     int i, ret;
1533
1534     for (i = 0; i < nb_ostreams; i++) {
1535         OutputStream   *ost = &ost_table[i];
1536         AVCodecContext *enc = ost->st->codec;
1537         AVFormatContext *os = output_files[ost->file_index].ctx;
1538
1539         if (!ost->encoding_needed)
1540             continue;
1541
1542         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1543             continue;
1544         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1545             continue;
1546
1547         for(;;) {
1548             AVPacket pkt;
1549             int fifo_bytes;
1550             av_init_packet(&pkt);
1551             pkt.stream_index= ost->index;
1552
1553             switch (ost->st->codec->codec_type) {
1554             case AVMEDIA_TYPE_AUDIO:
1555                 fifo_bytes = av_fifo_size(ost->fifo);
1556                 ret = 0;
1557                 /* encode any samples remaining in fifo */
1558                 if (fifo_bytes > 0) {
1559                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1560                     int fs_tmp = enc->frame_size;
1561
1562                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1563                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1564                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1565                     } else { /* pad */
1566                         int frame_bytes = enc->frame_size*osize*enc->channels;
1567                         if (allocated_audio_buf_size < frame_bytes)
1568                             exit_program(1);
1569                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1570                     }
1571
1572                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1573                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1574                                               ost->st->time_base.num, enc->sample_rate);
1575                     enc->frame_size = fs_tmp;
1576                 }
1577                 if (ret <= 0) {
1578                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1579                 }
1580                 if (ret < 0) {
1581                     fprintf(stderr, "Audio encoding failed\n");
1582                     exit_program(1);
1583                 }
1584                 audio_size += ret;
1585                 pkt.flags |= AV_PKT_FLAG_KEY;
1586                 break;
1587             case AVMEDIA_TYPE_VIDEO:
1588                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1589                 if (ret < 0) {
1590                     fprintf(stderr, "Video encoding failed\n");
1591                     exit_program(1);
1592                 }
1593                 video_size += ret;
1594                 if(enc->coded_frame && enc->coded_frame->key_frame)
1595                     pkt.flags |= AV_PKT_FLAG_KEY;
1596                 if (ost->logfile && enc->stats_out) {
1597                     fprintf(ost->logfile, "%s", enc->stats_out);
1598                 }
1599                 break;
1600             default:
1601                 ret=-1;
1602             }
1603
1604             if (ret <= 0)
1605                 break;
1606             pkt.data = bit_buffer;
1607             pkt.size = ret;
1608             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1609                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1610             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1611         }
1612     }
1613 }
1614
1615 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1616 static int output_packet(InputStream *ist, int ist_index,
1617                          OutputStream *ost_table, int nb_ostreams,
1618                          const AVPacket *pkt)
1619 {
1620     AVFormatContext *os;
1621     OutputStream *ost;
1622     int ret, i;
1623     int got_output;
1624     AVFrame picture;
1625     void *buffer_to_free = NULL;
1626     static unsigned int samples_size= 0;
1627     AVSubtitle subtitle, *subtitle_to_free;
1628     int64_t pkt_pts = AV_NOPTS_VALUE;
1629 #if CONFIG_AVFILTER
1630     int frame_available;
1631 #endif
1632     float quality;
1633
1634     AVPacket avpkt;
1635     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1636
1637     if(ist->next_pts == AV_NOPTS_VALUE)
1638         ist->next_pts= ist->pts;
1639
1640     if (pkt == NULL) {
1641         /* EOF handling */
1642         av_init_packet(&avpkt);
1643         avpkt.data = NULL;
1644         avpkt.size = 0;
1645         goto handle_eof;
1646     } else {
1647         avpkt = *pkt;
1648     }
1649
1650     if(pkt->dts != AV_NOPTS_VALUE)
1651         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1652     if(pkt->pts != AV_NOPTS_VALUE)
1653         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1654
1655     //while we have more to decode or while the decoder did output something on EOF
1656     while (avpkt.size > 0 || (!pkt && got_output)) {
1657         uint8_t *data_buf, *decoded_data_buf;
1658         int data_size, decoded_data_size;
1659     handle_eof:
1660         ist->pts= ist->next_pts;
1661
1662         if(avpkt.size && avpkt.size != pkt->size &&
1663            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1664             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1665             ist->showed_multi_packet_warning=1;
1666         }
1667
1668         /* decode the packet if needed */
1669         decoded_data_buf = NULL; /* fail safe */
1670         decoded_data_size= 0;
1671         data_buf  = avpkt.data;
1672         data_size = avpkt.size;
1673         subtitle_to_free = NULL;
1674         if (ist->decoding_needed) {
1675             switch(ist->st->codec->codec_type) {
1676             case AVMEDIA_TYPE_AUDIO:{
1677                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1678                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1679                     av_free(samples);
1680                     samples= av_malloc(samples_size);
1681                 }
1682                 decoded_data_size= samples_size;
1683                     /* XXX: could avoid copy if PCM 16 bits with same
1684                        endianness as CPU */
1685                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1686                                             &avpkt);
1687                 if (ret < 0)
1688                     return ret;
1689                 avpkt.data += ret;
1690                 avpkt.size -= ret;
1691                 data_size   = ret;
1692                 got_output  = decoded_data_size > 0;
1693                 /* Some bug in mpeg audio decoder gives */
1694                 /* decoded_data_size < 0, it seems they are overflows */
1695                 if (!got_output) {
1696                     /* no audio frame */
1697                     continue;
1698                 }
1699                 decoded_data_buf = (uint8_t *)samples;
1700                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1701                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1702                 break;}
1703             case AVMEDIA_TYPE_VIDEO:
1704                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1705                     /* XXX: allocate picture correctly */
1706                     avcodec_get_frame_defaults(&picture);
1707                     avpkt.pts = pkt_pts;
1708                     avpkt.dts = ist->pts;
1709                     pkt_pts = AV_NOPTS_VALUE;
1710
1711                     ret = avcodec_decode_video2(ist->st->codec,
1712                                                 &picture, &got_output, &avpkt);
1713                     quality = same_quant ? picture.quality : 0;
1714                     if (ret < 0)
1715                         return ret;
1716                     if (!got_output) {
1717                         /* no picture yet */
1718                         goto discard_packet;
1719                     }
1720                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
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                     avpkt.size = 0;
1728                     buffer_to_free = NULL;
1729                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1730                     break;
1731             case AVMEDIA_TYPE_SUBTITLE:
1732                 ret = avcodec_decode_subtitle2(ist->st->codec,
1733                                                &subtitle, &got_output, &avpkt);
1734                 if (ret < 0)
1735                     return ret;
1736                 if (!got_output) {
1737                     goto discard_packet;
1738                 }
1739                 subtitle_to_free = &subtitle;
1740                 avpkt.size = 0;
1741                 break;
1742             default:
1743                 return -1;
1744             }
1745         } else {
1746             switch(ist->st->codec->codec_type) {
1747             case AVMEDIA_TYPE_AUDIO:
1748                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1749                     ist->st->codec->sample_rate;
1750                 break;
1751             case AVMEDIA_TYPE_VIDEO:
1752                 if (ist->st->codec->time_base.num != 0) {
1753                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1754                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1755                                       ist->st->codec->time_base.num * ticks) /
1756                         ist->st->codec->time_base.den;
1757                 }
1758                 break;
1759             }
1760             avpkt.size = 0;
1761         }
1762
1763 #if CONFIG_AVFILTER
1764         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1765         for(i=0;i<nb_ostreams;i++) {
1766             OutputFile *of = &output_files[ost_table[i].file_index];
1767             if (of->start_time == 0 || ist->pts >= of->start_time) {
1768                 ost = &ost_table[i];
1769                 if (ost->input_video_filter && ost->source_index == ist_index) {
1770                     if (!picture.sample_aspect_ratio.num)
1771                         picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1772                     picture.pts = ist->pts;
1773
1774                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1775                 }
1776             }
1777         }
1778 #endif
1779
1780         // preprocess audio (volume)
1781         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1782             if (audio_volume != 256) {
1783                 short *volp;
1784                 volp = samples;
1785                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1786                     int v = ((*volp) * audio_volume + 128) >> 8;
1787                     *volp++ = av_clip_int16(v);
1788                 }
1789             }
1790         }
1791
1792         /* frame rate emulation */
1793         if (input_files[ist->file_index].rate_emu) {
1794             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1795             int64_t now = av_gettime() - ist->start;
1796             if (pts > now)
1797                 usleep(pts - now);
1798         }
1799         /* if output time reached then transcode raw format,
1800            encode packets and output them */
1801         for (i = 0; i < nb_ostreams; i++) {
1802             OutputFile *of = &output_files[ost_table[i].file_index];
1803             int frame_size;
1804
1805             ost = &ost_table[i];
1806             if (ost->source_index != ist_index)
1807                 continue;
1808
1809             if (of->start_time && ist->pts < of->start_time)
1810                 continue;
1811
1812             if (of->recording_time != INT64_MAX &&
1813                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1814                               (AVRational){1, 1000000}) >= 0) {
1815                 ost->is_past_recording_time = 1;
1816                 continue;
1817             }
1818
1819 #if CONFIG_AVFILTER
1820             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1821                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1822             while (frame_available) {
1823                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1824                     AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1825                     if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1826                         goto cont;
1827                     if (ost->picref) {
1828                         avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1829                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1830                     }
1831                 }
1832 #endif
1833                 os = output_files[ost->file_index].ctx;
1834
1835                 /* set the input output pts pairs */
1836                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1837
1838                 if (ost->encoding_needed) {
1839                     av_assert0(ist->decoding_needed);
1840                     switch(ost->st->codec->codec_type) {
1841                     case AVMEDIA_TYPE_AUDIO:
1842                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1843                         break;
1844                     case AVMEDIA_TYPE_VIDEO:
1845 #if CONFIG_AVFILTER
1846                         if (ost->picref->video && !ost->frame_aspect_ratio)
1847                             ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1848 #endif
1849                         do_video_out(os, ost, ist, &picture, &frame_size,
1850                                         same_quant ? quality : ost->st->codec->global_quality);
1851                         if (vstats_filename && frame_size)
1852                             do_video_stats(os, ost, frame_size);
1853                         break;
1854                     case AVMEDIA_TYPE_SUBTITLE:
1855                         do_subtitle_out(os, ost, ist, &subtitle,
1856                                         pkt->pts);
1857                         break;
1858                     default:
1859                         abort();
1860                     }
1861                 } else {
1862                     AVFrame avframe; //FIXME/XXX remove this
1863                     AVPicture pict;
1864                     AVPacket opkt;
1865                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1866                     av_init_packet(&opkt);
1867
1868                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1869 #if !CONFIG_AVFILTER
1870                         continue;
1871 #else
1872                         goto cont;
1873 #endif
1874
1875                     /* no reencoding needed : output the packet directly */
1876                     /* force the input stream PTS */
1877
1878                     avcodec_get_frame_defaults(&avframe);
1879                     ost->st->codec->coded_frame= &avframe;
1880                     avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1881
1882                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1883                         audio_size += data_size;
1884                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1885                         video_size += data_size;
1886                         ost->sync_opts++;
1887                     }
1888
1889                     opkt.stream_index= ost->index;
1890                     if(pkt->pts != AV_NOPTS_VALUE)
1891                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1892                     else
1893                         opkt.pts= AV_NOPTS_VALUE;
1894
1895                     if (pkt->dts == AV_NOPTS_VALUE)
1896                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1897                     else
1898                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1899                     opkt.dts -= ost_tb_start_time;
1900
1901                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1902                     opkt.flags= pkt->flags;
1903
1904                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1905                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1906                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1907                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1908                        ) {
1909                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1910                             opkt.destruct= av_destruct_packet;
1911                     } else {
1912                         opkt.data = data_buf;
1913                         opkt.size = data_size;
1914                     }
1915
1916                     if (os->oformat->flags & AVFMT_RAWPICTURE) {
1917                         /* store AVPicture in AVPacket, as expected by the output format */
1918                         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1919                         opkt.data = (uint8_t *)&pict;
1920                         opkt.size = sizeof(AVPicture);
1921                         opkt.flags |= AV_PKT_FLAG_KEY;
1922                     }
1923                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1924                     ost->st->codec->frame_number++;
1925                     ost->frame_number++;
1926                     av_free_packet(&opkt);
1927                 }
1928 #if CONFIG_AVFILTER
1929                 cont:
1930                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1931                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1932                 avfilter_unref_buffer(ost->picref);
1933             }
1934 #endif
1935         }
1936
1937         av_free(buffer_to_free);
1938         /* XXX: allocate the subtitles in the codec ? */
1939         if (subtitle_to_free) {
1940             avsubtitle_free(subtitle_to_free);
1941             subtitle_to_free = NULL;
1942         }
1943     }
1944  discard_packet:
1945
1946     return 0;
1947 }
1948
1949 static void print_sdp(OutputFile *output_files, int n)
1950 {
1951     char sdp[2048];
1952     int i;
1953     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1954
1955     if (!avc)
1956         exit_program(1);
1957     for (i = 0; i < n; i++)
1958         avc[i] = output_files[i].ctx;
1959
1960     av_sdp_create(avc, n, sdp, sizeof(sdp));
1961     printf("SDP:\n%s\n", sdp);
1962     fflush(stdout);
1963     av_freep(&avc);
1964 }
1965
1966 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1967                              char *error, int error_len)
1968 {
1969     InputStream *ist = &input_streams[ist_index];
1970     if (ist->decoding_needed) {
1971         AVCodec *codec = ist->dec;
1972         if (!codec) {
1973             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d.%d",
1974                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1975             return AVERROR(EINVAL);
1976         }
1977         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1978             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1979                     ist->file_index, ist->st->index);
1980             return AVERROR(EINVAL);
1981         }
1982         assert_codec_experimental(ist->st->codec, 0);
1983         assert_avoptions(ist->opts);
1984     }
1985
1986     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;
1987     ist->next_pts = AV_NOPTS_VALUE;
1988     ist->is_start = 1;
1989
1990     return 0;
1991 }
1992
1993 static int transcode_init(OutputFile *output_files, int nb_output_files,
1994                           InputFile  *input_files,  int nb_input_files)
1995 {
1996     int ret = 0, i, j, k;
1997     AVFormatContext *os;
1998     AVCodecContext *codec, *icodec;
1999     OutputStream *ost;
2000     InputStream *ist;
2001     char error[1024];
2002     int want_sdp = 1;
2003
2004     /* init framerate emulation */
2005     for (i = 0; i < nb_input_files; i++) {
2006         InputFile *ifile = &input_files[i];
2007         if (ifile->rate_emu)
2008             for (j = 0; j < ifile->nb_streams; j++)
2009                 input_streams[j + ifile->ist_index].start = av_gettime();
2010     }
2011
2012     /* output stream init */
2013     for(i=0;i<nb_output_files;i++) {
2014         os = output_files[i].ctx;
2015         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
2016             av_dump_format(os, i, os->filename, 1);
2017             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2018             return AVERROR(EINVAL);
2019         }
2020     }
2021
2022     /* for each output stream, we compute the right encoding parameters */
2023     for (i = 0; i < nb_output_streams; i++) {
2024         ost = &output_streams[i];
2025         os = output_files[ost->file_index].ctx;
2026         ist = &input_streams[ost->source_index];
2027
2028         codec = ost->st->codec;
2029         icodec = ist->st->codec;
2030
2031         ost->st->disposition = ist->st->disposition;
2032         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2033         codec->chroma_sample_location = icodec->chroma_sample_location;
2034
2035         if (ost->st->stream_copy) {
2036             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2037
2038             if (extra_size > INT_MAX) {
2039                 return AVERROR(EINVAL);
2040             }
2041
2042             /* if stream_copy is selected, no need to decode or encode */
2043             codec->codec_id = icodec->codec_id;
2044             codec->codec_type = icodec->codec_type;
2045
2046             if(!codec->codec_tag){
2047                 if(   !os->oformat->codec_tag
2048                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2049                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2050                     codec->codec_tag = icodec->codec_tag;
2051             }
2052
2053             codec->bit_rate = icodec->bit_rate;
2054             codec->rc_max_rate    = icodec->rc_max_rate;
2055             codec->rc_buffer_size = icodec->rc_buffer_size;
2056             codec->extradata= av_mallocz(extra_size);
2057             if (!codec->extradata) {
2058                 return AVERROR(ENOMEM);
2059             }
2060             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2061             codec->extradata_size= icodec->extradata_size;
2062
2063             codec->time_base = ist->st->time_base;
2064             if(!strcmp(os->oformat->name, "avi")) {
2065                 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){
2066                     codec->time_base = icodec->time_base;
2067                     codec->time_base.num *= icodec->ticks_per_frame;
2068                     codec->time_base.den *= 2;
2069                 }
2070             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2071                 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){
2072                     codec->time_base = icodec->time_base;
2073                     codec->time_base.num *= icodec->ticks_per_frame;
2074                 }
2075             }
2076             av_reduce(&codec->time_base.num, &codec->time_base.den,
2077                         codec->time_base.num, codec->time_base.den, INT_MAX);
2078
2079             switch(codec->codec_type) {
2080             case AVMEDIA_TYPE_AUDIO:
2081                 if(audio_volume != 256) {
2082                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2083                     exit_program(1);
2084                 }
2085                 codec->channel_layout = icodec->channel_layout;
2086                 codec->sample_rate = icodec->sample_rate;
2087                 codec->channels = icodec->channels;
2088                 codec->frame_size = icodec->frame_size;
2089                 codec->audio_service_type = icodec->audio_service_type;
2090                 codec->block_align= icodec->block_align;
2091                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2092                     codec->block_align= 0;
2093                 if(codec->codec_id == CODEC_ID_AC3)
2094                     codec->block_align= 0;
2095                 break;
2096             case AVMEDIA_TYPE_VIDEO:
2097                 codec->pix_fmt = icodec->pix_fmt;
2098                 codec->width = icodec->width;
2099                 codec->height = icodec->height;
2100                 codec->has_b_frames = icodec->has_b_frames;
2101                 if (!codec->sample_aspect_ratio.num) {
2102                     codec->sample_aspect_ratio =
2103                     ost->st->sample_aspect_ratio =
2104                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2105                         ist->st->codec->sample_aspect_ratio.num ?
2106                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2107                 }
2108                 break;
2109             case AVMEDIA_TYPE_SUBTITLE:
2110                 codec->width = icodec->width;
2111                 codec->height = icodec->height;
2112                 break;
2113             case AVMEDIA_TYPE_DATA:
2114                 break;
2115             default:
2116                 abort();
2117             }
2118         } else {
2119             if (!ost->enc)
2120                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2121             switch(codec->codec_type) {
2122             case AVMEDIA_TYPE_AUDIO:
2123                 ost->fifo= av_fifo_alloc(1024);
2124                 if (!ost->fifo) {
2125                     return AVERROR(ENOMEM);
2126                 }
2127                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2128                 if (!codec->sample_rate) {
2129                     codec->sample_rate = icodec->sample_rate;
2130                 }
2131                 choose_sample_rate(ost->st, ost->enc);
2132                 codec->time_base = (AVRational){1, codec->sample_rate};
2133                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2134                     codec->sample_fmt = icodec->sample_fmt;
2135                 choose_sample_fmt(ost->st, ost->enc);
2136                 if (!codec->channels) {
2137                     codec->channels = icodec->channels;
2138                     codec->channel_layout = icodec->channel_layout;
2139                 }
2140                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2141                     codec->channel_layout = 0;
2142                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2143                 icodec->request_channels = codec->channels;
2144                 ist->decoding_needed = 1;
2145                 ost->encoding_needed = 1;
2146                 ost->resample_sample_fmt  = icodec->sample_fmt;
2147                 ost->resample_sample_rate = icodec->sample_rate;
2148                 ost->resample_channels    = icodec->channels;
2149                 break;
2150             case AVMEDIA_TYPE_VIDEO:
2151                 if (codec->pix_fmt == PIX_FMT_NONE)
2152                     codec->pix_fmt = icodec->pix_fmt;
2153                 choose_pixel_fmt(ost->st, ost->enc);
2154
2155                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2156                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2157                     exit_program(1);
2158                 }
2159
2160                 if (!codec->width || !codec->height) {
2161                     codec->width  = icodec->width;
2162                     codec->height = icodec->height;
2163                 }
2164
2165                 ost->video_resample = codec->width   != icodec->width  ||
2166                                       codec->height  != icodec->height ||
2167                                       codec->pix_fmt != icodec->pix_fmt;
2168                 if (ost->video_resample) {
2169                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2170                 }
2171
2172                 ost->resample_height = icodec->height;
2173                 ost->resample_width  = icodec->width;
2174                 ost->resample_pix_fmt= icodec->pix_fmt;
2175                 ost->encoding_needed = 1;
2176                 ist->decoding_needed = 1;
2177
2178                 if (!ost->frame_rate.num)
2179                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2180                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2181                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2182                     ost->frame_rate = ost->enc->supported_framerates[idx];
2183                 }
2184                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2185                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2186                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2187                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2188                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2189                 }
2190
2191 #if CONFIG_AVFILTER
2192                 if (configure_video_filters(ist, ost)) {
2193                     fprintf(stderr, "Error opening filters!\n");
2194                     exit(1);
2195                 }
2196 #endif
2197                 break;
2198             case AVMEDIA_TYPE_SUBTITLE:
2199                 ost->encoding_needed = 1;
2200                 ist->decoding_needed = 1;
2201                 break;
2202             default:
2203                 abort();
2204                 break;
2205             }
2206             /* two pass mode */
2207             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2208                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2209                 char logfilename[1024];
2210                 FILE *f;
2211
2212                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2213                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2214                          i);
2215                 if (codec->flags & CODEC_FLAG_PASS1) {
2216                     f = fopen(logfilename, "wb");
2217                     if (!f) {
2218                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2219                         exit_program(1);
2220                     }
2221                     ost->logfile = f;
2222                 } else {
2223                     char  *logbuffer;
2224                     size_t logbuffer_size;
2225                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2226                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2227                         exit_program(1);
2228                     }
2229                     codec->stats_in = logbuffer;
2230                 }
2231             }
2232         }
2233         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2234             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2235             int size= codec->width * codec->height;
2236             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2237         }
2238     }
2239
2240     if (!bit_buffer)
2241         bit_buffer = av_malloc(bit_buffer_size);
2242     if (!bit_buffer) {
2243         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2244                 bit_buffer_size);
2245         return AVERROR(ENOMEM);
2246     }
2247
2248     /* open each encoder */
2249     for (i = 0; i < nb_output_streams; i++) {
2250         ost = &output_streams[i];
2251         if (ost->encoding_needed) {
2252             AVCodec *codec = ost->enc;
2253             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2254             if (!codec) {
2255                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d.%d",
2256                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2257                 ret = AVERROR(EINVAL);
2258                 goto dump_format;
2259             }
2260             if (dec->subtitle_header) {
2261                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2262                 if (!ost->st->codec->subtitle_header) {
2263                     ret = AVERROR(ENOMEM);
2264                     goto dump_format;
2265                 }
2266                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2267                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2268             }
2269             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2270                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2271                         ost->file_index, ost->index);
2272                 ret = AVERROR(EINVAL);
2273                 goto dump_format;
2274             }
2275             assert_codec_experimental(ost->st->codec, 1);
2276             assert_avoptions(ost->opts);
2277             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2278                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2279                                              "It takes bits/s as argument, not kbits/s\n");
2280             extra_size += ost->st->codec->extradata_size;
2281
2282             if (ost->st->codec->me_threshold)
2283                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2284         }
2285     }
2286
2287     /* init input streams */
2288     for (i = 0; i < nb_input_streams; i++)
2289         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2290             goto dump_format;
2291
2292     /* discard unused programs */
2293     for (i = 0; i < nb_input_files; i++) {
2294         InputFile *ifile = &input_files[i];
2295         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2296             AVProgram *p = ifile->ctx->programs[j];
2297             int discard  = AVDISCARD_ALL;
2298
2299             for (k = 0; k < p->nb_stream_indexes; k++)
2300                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2301                     discard = AVDISCARD_DEFAULT;
2302                     break;
2303                 }
2304             p->discard = discard;
2305         }
2306     }
2307
2308     /* open files and write file headers */
2309     for (i = 0; i < nb_output_files; i++) {
2310         os = output_files[i].ctx;
2311         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2312             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2313             ret = AVERROR(EINVAL);
2314             goto dump_format;
2315         }
2316 //        assert_avoptions(output_files[i].opts);
2317         if (strcmp(os->oformat->name, "rtp")) {
2318             want_sdp = 0;
2319         }
2320     }
2321
2322  dump_format:
2323     /* dump the file output parameters - cannot be done before in case
2324        of stream copy */
2325     for(i=0;i<nb_output_files;i++) {
2326         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2327     }
2328
2329     /* dump the stream mapping */
2330     if (verbose >= 0) {
2331         fprintf(stderr, "Stream mapping:\n");
2332         for (i = 0; i < nb_output_streams;i ++) {
2333             ost = &output_streams[i];
2334             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2335                     input_streams[ost->source_index].file_index,
2336                     input_streams[ost->source_index].st->index,
2337                     ost->file_index,
2338                     ost->index);
2339             if (ost->sync_ist != &input_streams[ost->source_index])
2340                 fprintf(stderr, " [sync #%d.%d]",
2341                         ost->sync_ist->file_index,
2342                         ost->sync_ist->st->index);
2343             if (ost->st->stream_copy)
2344                 fprintf(stderr, " (copy)");
2345             else
2346                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2347                         input_streams[ost->source_index].dec->name : "?",
2348                         ost->enc ? ost->enc->name : "?");
2349             fprintf(stderr, "\n");
2350         }
2351     }
2352
2353     if (ret) {
2354         fprintf(stderr, "%s\n", error);
2355         return ret;
2356     }
2357
2358     if (want_sdp) {
2359         print_sdp(output_files, nb_output_files);
2360     }
2361
2362     return 0;
2363 }
2364
2365 /*
2366  * The following code is the main loop of the file converter
2367  */
2368 static int transcode(OutputFile *output_files, int nb_output_files,
2369                      InputFile  *input_files,  int nb_input_files)
2370 {
2371     int ret, i;
2372     AVFormatContext *is, *os;
2373     OutputStream *ost;
2374     InputStream *ist;
2375     uint8_t *no_packet;
2376     int no_packet_count=0;
2377     int64_t timer_start;
2378     int key;
2379
2380     if (!(no_packet = av_mallocz(nb_input_files)))
2381         exit_program(1);
2382
2383     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2384     if (ret < 0)
2385         goto fail;
2386
2387     if (!using_stdin) {
2388         if(verbose >= 0)
2389             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2390         avio_set_interrupt_cb(decode_interrupt_cb);
2391     }
2392     term_init();
2393
2394     timer_start = av_gettime();
2395
2396     for(; received_sigterm == 0;) {
2397         int file_index, ist_index;
2398         AVPacket pkt;
2399         int64_t ipts_min;
2400         double opts_min;
2401
2402         ipts_min= INT64_MAX;
2403         opts_min= 1e100;
2404         /* if 'q' pressed, exits */
2405         if (!using_stdin) {
2406             if (q_pressed)
2407                 break;
2408             /* read_key() returns 0 on EOF */
2409             key = read_key();
2410             if (key == 'q')
2411                 break;
2412             if (key == '+') verbose++;
2413             if (key == '-') verbose--;
2414             if (key == 's') qp_hist     ^= 1;
2415             if (key == 'h'){
2416                 if (do_hex_dump){
2417                     do_hex_dump = do_pkt_dump = 0;
2418                 } else if(do_pkt_dump){
2419                     do_hex_dump = 1;
2420                 } else
2421                     do_pkt_dump = 1;
2422                 av_log_set_level(AV_LOG_DEBUG);
2423             }
2424 #if CONFIG_AVFILTER
2425             if (key == 'c' || key == 'C'){
2426                 char ret[4096], target[64], cmd[256], arg[256]={0};
2427                 double ts;
2428                 int k;
2429                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2430                 i=0;
2431                 while((k=read_key()) !='\n' && k!='\r' && i<sizeof(ret)-1)
2432                     if(k>0) ret[i++]= k;
2433                 ret[i]= 0;
2434                 if(k>0 && sscanf(ret, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &ts, cmd, arg) >= 3){
2435                     for(i=0;i<nb_output_streams;i++) {
2436                         int r;
2437                         ost = &output_streams[i];
2438                         if(ost->graph){
2439                             if(ts<0){
2440                                 r= avfilter_graph_send_command(ost->graph, target, cmd, arg, ret, sizeof(ret), key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2441                                 fprintf(stderr, "Command reply for %d: %d, %s\n", i, r, ret);
2442                             }else{
2443                                 r= avfilter_graph_queue_command(ost->graph, target, cmd, arg, 0, ts);
2444                             }
2445                         }
2446                     }
2447                 }else{
2448                     fprintf(stderr, "Parse error\n");
2449                 }
2450             }
2451 #endif
2452             if (key == 'd' || key == 'D'){
2453                 int debug=0;
2454                 if(key == 'D') {
2455                     debug = input_streams[0].st->codec->debug<<1;
2456                     if(!debug) debug = 1;
2457                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2458                         debug += debug;
2459                 }else
2460                     scanf("%d", &debug);
2461                 for(i=0;i<nb_input_streams;i++) {
2462                     input_streams[i].st->codec->debug = debug;
2463                 }
2464                 for(i=0;i<nb_output_streams;i++) {
2465                     ost = &output_streams[i];
2466                     ost->st->codec->debug = debug;
2467                 }
2468                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2469                 fprintf(stderr,"debug=%d\n", debug);
2470             }
2471             if (key == '?'){
2472                 fprintf(stderr, "key    function\n"
2473                                 "?      show this help\n"
2474                                 "+      increase verbosity\n"
2475                                 "-      decrease verbosity\n"
2476                                 "c      Send command to filtergraph\n"
2477                                 "D      cycle through available debug modes\n"
2478                                 "h      dump packets/hex press to cycle through the 3 states\n"
2479                                 "q      quit\n"
2480                                 "s      Show QP histogram\n"
2481                 );
2482             }
2483         }
2484
2485         /* select the stream that we must read now by looking at the
2486            smallest output pts */
2487         file_index = -1;
2488         for (i = 0; i < nb_output_streams; i++) {
2489             OutputFile *of;
2490             int64_t ipts;
2491             double  opts;
2492             ost = &output_streams[i];
2493             of = &output_files[ost->file_index];
2494             os = output_files[ost->file_index].ctx;
2495             ist = &input_streams[ost->source_index];
2496             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2497                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2498                 continue;
2499             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2500             ipts = ist->pts;
2501             if (!input_files[ist->file_index].eof_reached){
2502                 if(ipts < ipts_min) {
2503                     ipts_min = ipts;
2504                     if(input_sync ) file_index = ist->file_index;
2505                 }
2506                 if(opts < opts_min) {
2507                     opts_min = opts;
2508                     if(!input_sync) file_index = ist->file_index;
2509                 }
2510             }
2511             if (ost->frame_number >= ost->max_frames) {
2512                 int j;
2513                 for (j = of->ost_index; j < of->ctx->nb_streams; j++)
2514                     output_streams[j].is_past_recording_time = 1;
2515                 continue;
2516             }
2517         }
2518         /* if none, if is finished */
2519         if (file_index < 0) {
2520             if(no_packet_count){
2521                 no_packet_count=0;
2522                 memset(no_packet, 0, nb_input_files);
2523                 usleep(10000);
2524                 continue;
2525             }
2526             break;
2527         }
2528
2529         /* read a frame from it and output it in the fifo */
2530         is = input_files[file_index].ctx;
2531         ret= av_read_frame(is, &pkt);
2532         if(ret == AVERROR(EAGAIN)){
2533             no_packet[file_index]=1;
2534             no_packet_count++;
2535             continue;
2536         }
2537         if (ret < 0) {
2538             input_files[file_index].eof_reached = 1;
2539             if (opt_shortest)
2540                 break;
2541             else
2542                 continue;
2543         }
2544
2545         no_packet_count=0;
2546         memset(no_packet, 0, nb_input_files);
2547
2548         if (do_pkt_dump) {
2549             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2550                              is->streams[pkt.stream_index]);
2551         }
2552         /* the following test is needed in case new streams appear
2553            dynamically in stream : we ignore them */
2554         if (pkt.stream_index >= input_files[file_index].nb_streams)
2555             goto discard_packet;
2556         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2557         ist = &input_streams[ist_index];
2558         if (ist->discard)
2559             goto discard_packet;
2560
2561         if (pkt.dts != AV_NOPTS_VALUE)
2562             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2563         if (pkt.pts != AV_NOPTS_VALUE)
2564             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2565
2566         if(pkt.pts != AV_NOPTS_VALUE)
2567             pkt.pts *= ist->ts_scale;
2568         if(pkt.dts != AV_NOPTS_VALUE)
2569             pkt.dts *= ist->ts_scale;
2570
2571 //        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);
2572         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2573             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2574             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2575             int64_t delta= pkt_dts - ist->next_pts;
2576             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2577                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2578                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2579                 pkt_dts+1<ist->pts)&& !copy_ts){
2580                 input_files[ist->file_index].ts_offset -= delta;
2581                 if (verbose > 2)
2582                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2583                             delta, input_files[ist->file_index].ts_offset);
2584                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2585                 if(pkt.pts != AV_NOPTS_VALUE)
2586                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2587             }
2588         }
2589
2590         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2591         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2592
2593             if (verbose >= 0)
2594                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2595                         ist->file_index, ist->st->index);
2596             if (exit_on_error)
2597                 exit_program(1);
2598             av_free_packet(&pkt);
2599             continue;
2600         }
2601
2602     discard_packet:
2603         av_free_packet(&pkt);
2604
2605         /* dump report by using the output first video and audio streams */
2606         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2607     }
2608
2609     /* at the end of stream, we must flush the decoder buffers */
2610     for (i = 0; i < nb_input_streams; i++) {
2611         ist = &input_streams[i];
2612         if (ist->decoding_needed) {
2613             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2614         }
2615     }
2616     flush_encoders(output_streams, nb_output_streams);
2617
2618     term_exit();
2619
2620     /* write the trailer if needed and close file */
2621     for(i=0;i<nb_output_files;i++) {
2622         os = output_files[i].ctx;
2623         av_write_trailer(os);
2624     }
2625
2626     /* dump report by using the first video and audio streams */
2627     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2628
2629     /* close each encoder */
2630     for (i = 0; i < nb_output_streams; i++) {
2631         ost = &output_streams[i];
2632         if (ost->encoding_needed) {
2633             av_freep(&ost->st->codec->stats_in);
2634             avcodec_close(ost->st->codec);
2635         }
2636 #if CONFIG_AVFILTER
2637         avfilter_graph_free(&ost->graph);
2638 #endif
2639     }
2640
2641     /* close each decoder */
2642     for (i = 0; i < nb_input_streams; i++) {
2643         ist = &input_streams[i];
2644         if (ist->decoding_needed) {
2645             avcodec_close(ist->st->codec);
2646         }
2647     }
2648
2649     /* finished ! */
2650     ret = 0;
2651
2652  fail:
2653     av_freep(&bit_buffer);
2654     av_freep(&no_packet);
2655
2656     if (output_streams) {
2657         for (i = 0; i < nb_output_streams; i++) {
2658             ost = &output_streams[i];
2659             if (ost) {
2660                 if (ost->st->stream_copy)
2661                     av_freep(&ost->st->codec->extradata);
2662                 if (ost->logfile) {
2663                     fclose(ost->logfile);
2664                     ost->logfile = NULL;
2665                 }
2666                 av_fifo_free(ost->fifo); /* works even if fifo is not
2667                                              initialized but set to zero */
2668                 av_freep(&ost->st->codec->subtitle_header);
2669                 av_free(ost->resample_frame.data[0]);
2670                 av_free(ost->forced_kf_pts);
2671                 if (ost->video_resample)
2672                     sws_freeContext(ost->img_resample_ctx);
2673                 if (ost->resample)
2674                     audio_resample_close(ost->resample);
2675                 if (ost->reformat_ctx)
2676                     av_audio_convert_free(ost->reformat_ctx);
2677                 av_dict_free(&ost->opts);
2678             }
2679         }
2680     }
2681     return ret;
2682 }
2683
2684 static int opt_verbose(const char *opt, const char *arg)
2685 {
2686     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2687     return 0;
2688 }
2689
2690 static int opt_frame_crop(const char *opt, const char *arg)
2691 {
2692     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2693     return AVERROR(EINVAL);
2694 }
2695
2696 static int opt_pad(const char *opt, const char *arg)
2697 {
2698     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2699     return -1;
2700 }
2701
2702 static double parse_frame_aspect_ratio(const char *arg)
2703 {
2704     int x = 0, y = 0;
2705     double ar = 0;
2706     const char *p;
2707     char *end;
2708
2709     p = strchr(arg, ':');
2710     if (p) {
2711         x = strtol(arg, &end, 10);
2712         if (end == p)
2713             y = strtol(end+1, &end, 10);
2714         if (x > 0 && y > 0)
2715             ar = (double)x / (double)y;
2716     } else
2717         ar = strtod(arg, NULL);
2718
2719     if (!ar) {
2720         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2721         exit_program(1);
2722     }
2723     return ar;
2724 }
2725
2726 static int opt_video_channel(const char *opt, const char *arg)
2727 {
2728     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2729     return opt_default("channel", arg);
2730 }
2731
2732 static int opt_video_standard(const char *opt, const char *arg)
2733 {
2734     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2735     return opt_default("standard", arg);
2736 }
2737
2738 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2739 {
2740     audio_codec_name = arg;
2741     return parse_option(o, "codec:a", arg, options);
2742 }
2743
2744 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2745 {
2746     video_codec_name = arg;
2747     return parse_option(o, "codec:v", arg, options);
2748 }
2749
2750 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2751 {
2752     subtitle_codec_name = arg;
2753     return parse_option(o, "codec:s", arg, options);
2754 }
2755
2756 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2757 {
2758     return parse_option(o, "codec:d", arg, options);
2759 }
2760
2761 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2762 {
2763     StreamMap *m = NULL;
2764     int i, negative = 0, file_idx;
2765     int sync_file_idx = -1, sync_stream_idx;
2766     char *p, *sync;
2767     char *map;
2768
2769     if (*arg == '-') {
2770         negative = 1;
2771         arg++;
2772     }
2773     map = av_strdup(arg);
2774
2775     /* parse sync stream first, just pick first matching stream */
2776     if (sync = strchr(map, ',')) {
2777         *sync = 0;
2778         sync_file_idx = strtol(sync + 1, &sync, 0);
2779         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2780             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2781             exit_program(1);
2782         }
2783         if (*sync)
2784             sync++;
2785         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2786             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2787                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2788                 sync_stream_idx = i;
2789                 break;
2790             }
2791         if (i == input_files[sync_file_idx].nb_streams) {
2792             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2793                                        "match any streams.\n", arg);
2794             exit_program(1);
2795         }
2796     }
2797
2798
2799     file_idx = strtol(map, &p, 0);
2800     if (file_idx >= nb_input_files || file_idx < 0) {
2801         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2802         exit_program(1);
2803     }
2804     if (negative)
2805         /* disable some already defined maps */
2806         for (i = 0; i < o->nb_stream_maps; i++) {
2807             m = &o->stream_maps[i];
2808             if (check_stream_specifier(input_files[m->file_index].ctx,
2809                                        input_files[m->file_index].ctx->streams[m->stream_index],
2810                                        *p == ':' ? p + 1 : p) > 0)
2811                 m->disabled = 1;
2812         }
2813     else
2814         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2815             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2816                         *p == ':' ? p + 1 : p) <= 0)
2817                 continue;
2818             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2819                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2820             m = &o->stream_maps[o->nb_stream_maps - 1];
2821
2822             m->file_index   = file_idx;
2823             m->stream_index = i;
2824
2825             if (sync_file_idx >= 0) {
2826                 m->sync_file_index   = sync_file_idx;
2827                 m->sync_stream_index = sync_stream_idx;
2828             } else {
2829                 m->sync_file_index   = file_idx;
2830                 m->sync_stream_index = i;
2831             }
2832         }
2833
2834     if (!m) {
2835         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2836         exit_program(1);
2837     }
2838
2839     av_freep(&map);
2840     return 0;
2841 }
2842
2843 static void parse_meta_type(char *arg, char *type, int *index)
2844 {
2845     if (*arg) {
2846         *type = *arg;
2847         switch (*arg) {
2848         case 'g':
2849             break;
2850         case 's':
2851         case 'c':
2852         case 'p':
2853             if (*(++arg) == ':')
2854                 *index = strtol(++arg, NULL, 0);
2855             break;
2856         default:
2857             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2858             exit_program(1);
2859         }
2860     } else
2861         *type = 'g';
2862 }
2863
2864 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2865 {
2866     MetadataMap *m, *m1;
2867     char *p;
2868
2869     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2870                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2871
2872     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2873     m->file = strtol(arg, &p, 0);
2874     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2875
2876     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2877     if (p = strchr(opt, ':'))
2878         parse_meta_type(p + 1, &m1->type, &m1->index);
2879     else
2880         m1->type = 'g';
2881
2882     if (m->type == 'g' || m1->type == 'g')
2883         o->metadata_global_manual = 1;
2884     if (m->type == 's' || m1->type == 's')
2885         o->metadata_streams_manual = 1;
2886     if (m->type == 'c' || m1->type == 'c')
2887         o->metadata_chapters_manual = 1;
2888
2889     return 0;
2890 }
2891
2892 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
2893 {
2894     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
2895                     "Use -map_metadata instead.\n");
2896     return opt_map_metadata(o, opt, arg);
2897 }
2898
2899 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
2900 {
2901     char buf[128];
2902     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
2903     struct tm time = *gmtime((time_t*)&recording_timestamp);
2904     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
2905     parse_option(o, "metadata", buf, options);
2906
2907     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
2908                                  "tag instead.\n", opt);
2909     return 0;
2910 }
2911
2912 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2913 {
2914     const char *codec_string = encoder ? "encoder" : "decoder";
2915     AVCodec *codec;
2916
2917     if(!name)
2918         return CODEC_ID_NONE;
2919     codec = encoder ?
2920         avcodec_find_encoder_by_name(name) :
2921         avcodec_find_decoder_by_name(name);
2922     if(!codec) {
2923         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2924         exit_program(1);
2925     }
2926     if(codec->type != type) {
2927         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2928         exit_program(1);
2929     }
2930     return codec->id;
2931 }
2932
2933 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2934 {
2935     char *codec_name = NULL;
2936
2937     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2938
2939     if (!codec_name) {
2940         if (s->oformat) {
2941             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2942             return avcodec_find_encoder(st->codec->codec_id);
2943         }
2944     } else if (!strcmp(codec_name, "copy"))
2945         st->stream_copy = 1;
2946     else {
2947         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2948         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2949                             avcodec_find_decoder_by_name(codec_name);
2950     }
2951
2952     return NULL;
2953 }
2954
2955 /**
2956  * Add all the streams from the given input file to the global
2957  * list of input streams.
2958  */
2959 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2960 {
2961     int i, rfps, rfps_base;
2962
2963     for (i = 0; i < ic->nb_streams; i++) {
2964         AVStream *st = ic->streams[i];
2965         AVCodecContext *dec = st->codec;
2966         InputStream *ist;
2967         double scale = 1.0;
2968
2969         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2970         ist = &input_streams[nb_input_streams - 1];
2971         ist->st = st;
2972         ist->file_index = nb_input_files;
2973         ist->discard = 1;
2974         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2975
2976         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2977         ist->ts_scale = scale;
2978
2979         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2980         if (!ist->dec)
2981             ist->dec = avcodec_find_decoder(dec->codec_id);
2982
2983         switch (dec->codec_type) {
2984         case AVMEDIA_TYPE_AUDIO:
2985             if(!ist->dec)
2986                 ist->dec = avcodec_find_decoder(dec->codec_id);
2987             if(o->audio_disable)
2988                 st->discard= AVDISCARD_ALL;
2989             break;
2990         case AVMEDIA_TYPE_VIDEO:
2991             if(!ist->dec)
2992                 ist->dec = avcodec_find_decoder(dec->codec_id);
2993             rfps      = ic->streams[i]->r_frame_rate.num;
2994             rfps_base = ic->streams[i]->r_frame_rate.den;
2995             if (dec->lowres) {
2996                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2997             }
2998
2999             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3000
3001                 if (verbose >= 0)
3002                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3003                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3004
3005                     (float)rfps / rfps_base, rfps, rfps_base);
3006             }
3007
3008             if (o->video_disable)
3009                 st->discard= AVDISCARD_ALL;
3010             else if(video_discard)
3011                 st->discard= video_discard;
3012             break;
3013         case AVMEDIA_TYPE_DATA:
3014             break;
3015         case AVMEDIA_TYPE_SUBTITLE:
3016             if(!ist->dec)
3017                 ist->dec = avcodec_find_decoder(dec->codec_id);
3018             if(o->subtitle_disable)
3019                 st->discard = AVDISCARD_ALL;
3020             break;
3021         case AVMEDIA_TYPE_ATTACHMENT:
3022         case AVMEDIA_TYPE_UNKNOWN:
3023             break;
3024         default:
3025             abort();
3026         }
3027     }
3028 }
3029
3030 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3031 {
3032     AVFormatContext *ic;
3033     AVInputFormat *file_iformat = NULL;
3034     int err, i, ret;
3035     int64_t timestamp;
3036     uint8_t buf[128];
3037     AVDictionary **opts;
3038     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3039
3040     if (o->format) {
3041         if (!(file_iformat = av_find_input_format(o->format))) {
3042             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
3043             exit_program(1);
3044         }
3045     }
3046
3047     if (!strcmp(filename, "-"))
3048         filename = "pipe:";
3049
3050     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3051                     !strcmp(filename, "/dev/stdin");
3052
3053     /* get default parameters from command line */
3054     ic = avformat_alloc_context();
3055     if (!ic) {
3056         print_error(filename, AVERROR(ENOMEM));
3057         exit_program(1);
3058     }
3059     if (o->nb_audio_sample_rate) {
3060         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3061         av_dict_set(&format_opts, "sample_rate", buf, 0);
3062     }
3063     if (o->nb_audio_channels) {
3064         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3065         av_dict_set(&format_opts, "channels", buf, 0);
3066     }
3067     if (o->nb_frame_rates) {
3068         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3069     }
3070     if (o->nb_frame_sizes) {
3071         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3072     }
3073     if (o->nb_frame_pix_fmts)
3074         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3075
3076     ic->flags |= AVFMT_FLAG_NONBLOCK;
3077
3078     if (loop_input) {
3079         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3080         ic->loop_input = loop_input;
3081     }
3082
3083     /* open the input file with generic libav function */
3084     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3085     if (err < 0) {
3086         print_error(filename, err);
3087         exit_program(1);
3088     }
3089     assert_avoptions(format_opts);
3090
3091     /* apply forced codec ids */
3092     for (i = 0; i < ic->nb_streams; i++)
3093         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
3094
3095     /* Set AVCodecContext options for avformat_find_stream_info */
3096     opts = setup_find_stream_info_opts(ic, codec_opts);
3097     orig_nb_streams = ic->nb_streams;
3098
3099     /* If not enough info to get the stream parameters, we decode the
3100        first frames to get it. (used in mpeg case for example) */
3101     ret = avformat_find_stream_info(ic, opts);
3102     if (ret < 0 && verbose >= 0) {
3103         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3104         av_close_input_file(ic);
3105         exit_program(1);
3106     }
3107
3108     timestamp = o->start_time;
3109     /* add the stream start time */
3110     if (ic->start_time != AV_NOPTS_VALUE)
3111         timestamp += ic->start_time;
3112
3113     /* if seeking requested, we execute it */
3114     if (o->start_time != 0) {
3115         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3116         if (ret < 0) {
3117             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3118                     filename, (double)timestamp / AV_TIME_BASE);
3119         }
3120     }
3121
3122     /* update the current parameters so that they match the one of the input stream */
3123     add_input_streams(o, ic);
3124
3125     /* dump the file content */
3126     if (verbose >= 0)
3127         av_dump_format(ic, nb_input_files, filename, 0);
3128
3129     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3130     input_files[nb_input_files - 1].ctx        = ic;
3131     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3132     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3133     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3134     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3135
3136     for (i = 0; i < orig_nb_streams; i++)
3137         av_dict_free(&opts[i]);
3138     av_freep(&opts);
3139
3140     reset_options(o, 1);
3141     return 0;
3142 }
3143
3144 static void parse_forced_key_frames(char *kf, OutputStream *ost, AVCodecContext *avctx)
3145 {
3146     char *p;
3147     int n = 1, i;
3148     int64_t t;
3149
3150     for (p = kf; *p; p++)
3151         if (*p == ',')
3152             n++;
3153     ost->forced_kf_count = n;
3154     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3155     if (!ost->forced_kf_pts) {
3156         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3157         exit_program(1);
3158     }
3159     for (i = 0; i < n; i++) {
3160         p = i ? strchr(p, ',') + 1 : kf;
3161         t = parse_time_or_die("force_key_frames", p, 1);
3162         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3163     }
3164 }
3165
3166 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3167 {
3168     OutputStream *ost;
3169     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
3170     int idx      = oc->nb_streams - 1;
3171     int64_t max_frames = INT64_MAX;
3172     char *bsf = NULL, *next, *codec_tag = NULL;
3173     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3174     double qscale = -1;
3175
3176     if (!st) {
3177         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3178         exit_program(1);
3179     }
3180
3181     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3182                                 nb_output_streams + 1);
3183     ost = &output_streams[nb_output_streams - 1];
3184     ost->file_index = nb_output_files;
3185     ost->index = idx;
3186     ost->st    = st;
3187     st->codec->codec_type = type;
3188     ost->enc = choose_codec(o, oc, st, type);
3189     if (ost->enc) {
3190         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3191     }
3192
3193     avcodec_get_context_defaults3(st->codec, ost->enc);
3194     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3195
3196     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
3197     ost->max_frames = max_frames;
3198
3199     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3200     while (bsf) {
3201         if (next = strchr(bsf, ','))
3202             *next++ = 0;
3203         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3204             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
3205             exit_program(1);
3206         }
3207         if (bsfc_prev)
3208             bsfc_prev->next = bsfc;
3209         else
3210             ost->bitstream_filters = bsfc;
3211
3212         bsfc_prev = bsfc;
3213         bsf       = next;
3214     }
3215
3216     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3217     if (codec_tag) {
3218         uint32_t tag = strtol(codec_tag, &next, 0);
3219         if (*next)
3220             tag = AV_RL32(codec_tag);
3221         st->codec->codec_tag = tag;
3222     }
3223
3224     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3225     if (qscale >= 0 || same_quant) {
3226         st->codec->flags |= CODEC_FLAG_QSCALE;
3227         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3228     }
3229
3230     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3231     return ost;
3232 }
3233
3234 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3235 {
3236     int i;
3237     const char *p = str;
3238     for(i = 0;; i++) {
3239         dest[i] = atoi(p);
3240         if(i == 63)
3241             break;
3242         p = strchr(p, ',');
3243         if(!p) {
3244             fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3245             exit_program(1);
3246         }
3247         p++;
3248     }
3249 }
3250
3251 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3252 {
3253     AVStream *st;
3254     OutputStream *ost;
3255     AVCodecContext *video_enc;
3256
3257     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3258     st  = ost->st;
3259     video_enc = st->codec;
3260
3261     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3262         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3263     }
3264
3265     if (!st->stream_copy) {
3266         const char *p = NULL;
3267         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3268         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3269         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3270         int i, force_fps = 0, top_field_first = -1;
3271
3272         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3273         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3274             av_log(NULL, AV_LOG_ERROR, "Invalid framerate value: %s\n", frame_rate);
3275             exit_program(1);
3276         }
3277
3278         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3279         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3280             av_log(NULL, AV_LOG_ERROR, "Invalid frame size: %s.\n", frame_size);
3281             exit_program(1);
3282         }
3283
3284         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3285         if (frame_aspect_ratio)
3286             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3287
3288         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3289         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3290         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3291             av_log(NULL, AV_LOG_ERROR, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3292             exit_program(1);
3293         }
3294         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3295
3296         if (intra_only)
3297             video_enc->gop_size = 0;
3298         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3299         if (intra_matrix) {
3300             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3301                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for intra matrix.\n");
3302                 exit_program(1);
3303             }
3304             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3305         }
3306         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3307         if (inter_matrix) {
3308             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3309                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for inter matrix.\n");
3310                 exit_program(1);
3311             }
3312             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3313         }
3314
3315         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3316         for(i=0; p; i++){
3317             int start, end, q;
3318             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3319             if(e!=3){
3320                 fprintf(stderr, "error parsing rc_override\n");
3321                 exit_program(1);
3322             }
3323             video_enc->rc_override=
3324                 av_realloc(video_enc->rc_override,
3325                            sizeof(RcOverride)*(i+1));
3326             video_enc->rc_override[i].start_frame= start;
3327             video_enc->rc_override[i].end_frame  = end;
3328             if(q>0){
3329                 video_enc->rc_override[i].qscale= q;
3330                 video_enc->rc_override[i].quality_factor= 1.0;
3331             }
3332             else{
3333                 video_enc->rc_override[i].qscale= 0;
3334                 video_enc->rc_override[i].quality_factor= -q/100.0;
3335             }
3336             p= strchr(p, '/');
3337             if(p) p++;
3338         }
3339         video_enc->rc_override_count=i;
3340         if (!video_enc->rc_initial_buffer_occupancy)
3341             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3342         video_enc->intra_dc_precision= intra_dc_precision - 8;
3343
3344         /* two pass mode */
3345         if (do_pass) {
3346             if (do_pass == 1) {
3347                 video_enc->flags |= CODEC_FLAG_PASS1;
3348             } else {
3349                 video_enc->flags |= CODEC_FLAG_PASS2;
3350             }
3351         }
3352
3353         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3354         if (forced_key_frames)
3355             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3356
3357         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3358         ost->force_fps = force_fps;
3359
3360         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3361         ost->top_field_first = top_field_first;
3362
3363 #if CONFIG_AVFILTER
3364         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3365         if (filters)
3366             ost->avfilter = av_strdup(filters);
3367 #endif
3368     }
3369
3370     return ost;
3371 }
3372
3373 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3374 {
3375     AVStream *st;
3376     OutputStream *ost;
3377     AVCodecContext *audio_enc;
3378
3379     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3380     st  = ost->st;
3381
3382     audio_enc = st->codec;
3383     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3384
3385     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3386         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3387     }
3388     if (!st->stream_copy) {
3389         char *sample_fmt = NULL;
3390
3391         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3392
3393         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3394         if (sample_fmt &&
3395             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3396             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3397             exit_program(1);
3398         }
3399
3400         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3401     }
3402
3403     return ost;
3404 }
3405
3406 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3407 {
3408     AVStream *st;
3409     OutputStream *ost;
3410     AVCodecContext *data_enc;
3411
3412     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3413     st  = ost->st;
3414     data_enc = st->codec;
3415     if (!st->stream_copy) {
3416         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3417         exit_program(1);
3418     }
3419
3420     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3421         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3422     }
3423
3424     return ost;
3425 }
3426
3427 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3428 {
3429     AVStream *st;
3430     OutputStream *ost;
3431     AVCodecContext *subtitle_enc;
3432
3433     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3434     st  = ost->st;
3435     subtitle_enc = st->codec;
3436
3437     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3438
3439     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3440         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3441     }
3442
3443     return ost;
3444 }
3445
3446 /* arg format is "output-stream-index:streamid-value". */
3447 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3448 {
3449     int idx;
3450     char *p;
3451     char idx_str[16];
3452
3453     av_strlcpy(idx_str, arg, sizeof(idx_str));
3454     p = strchr(idx_str, ':');
3455     if (!p) {
3456         fprintf(stderr,
3457                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3458                 arg, opt);
3459         exit_program(1);
3460     }
3461     *p++ = '\0';
3462     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3463     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3464     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3465     return 0;
3466 }
3467
3468 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3469 {
3470     AVFormatContext *is = ifile->ctx;
3471     AVFormatContext *os = ofile->ctx;
3472     int i;
3473
3474     for (i = 0; i < is->nb_chapters; i++) {
3475         AVChapter *in_ch = is->chapters[i], *out_ch;
3476         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3477                                       AV_TIME_BASE_Q, in_ch->time_base);
3478         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3479                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3480
3481
3482         if (in_ch->end < ts_off)
3483             continue;
3484         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3485             break;
3486
3487         out_ch = av_mallocz(sizeof(AVChapter));
3488         if (!out_ch)
3489             return AVERROR(ENOMEM);
3490
3491         out_ch->id        = in_ch->id;
3492         out_ch->time_base = in_ch->time_base;
3493         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3494         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3495
3496         if (copy_metadata)
3497             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3498
3499         os->nb_chapters++;
3500         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3501         if (!os->chapters)
3502             return AVERROR(ENOMEM);
3503         os->chapters[os->nb_chapters - 1] = out_ch;
3504     }
3505     return 0;
3506 }
3507
3508 static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3509 {
3510     int i, err;
3511     AVFormatContext *ic = NULL;
3512
3513     err = avformat_open_input(&ic, filename, NULL, NULL);
3514     if (err < 0)
3515         return err;
3516     /* copy stream format */
3517     for(i=0;i<ic->nb_streams;i++) {
3518         AVStream *st;
3519         OutputStream *ost;
3520         AVCodec *codec;
3521
3522         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3523         ost   = new_output_stream(o, s, codec->type);
3524         st    = ost->st;
3525
3526         // FIXME: a more elegant solution is needed
3527         memcpy(st, ic->streams[i], sizeof(AVStream));
3528         st->info = av_malloc(sizeof(*st->info));
3529         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3530         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3531
3532         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3533             choose_sample_fmt(st, codec);
3534         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3535             choose_pixel_fmt(st, codec);
3536     }
3537
3538     av_close_input_file(ic);
3539     return 0;
3540 }
3541
3542 static void opt_output_file(void *optctx, const char *filename)
3543 {
3544     OptionsContext *o = optctx;
3545     AVFormatContext *oc;
3546     int i, err;
3547     AVOutputFormat *file_oformat;
3548     OutputStream *ost;
3549     InputStream  *ist;
3550
3551     if (!strcmp(filename, "-"))
3552         filename = "pipe:";
3553
3554     err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
3555     if (!oc) {
3556         print_error(filename, err);
3557         exit_program(1);
3558     }
3559     file_oformat= oc->oformat;
3560
3561     if (!strcmp(file_oformat->name, "ffm") &&
3562         av_strstart(filename, "http:", NULL)) {
3563         /* special case for files sent to ffserver: we get the stream
3564            parameters from ffserver */
3565         int err = read_ffserver_streams(o, oc, filename);
3566         if (err < 0) {
3567             print_error(filename, err);
3568             exit_program(1);
3569         }
3570     } else if (!o->nb_stream_maps) {
3571         /* pick the "best" stream of each type */
3572 #define NEW_STREAM(type, index)\
3573         if (index >= 0) {\
3574             ost = new_ ## type ## _stream(o, oc);\
3575             ost->source_index = index;\
3576             ost->sync_ist     = &input_streams[index];\
3577             input_streams[index].discard = 0;\
3578         }
3579
3580         /* video: highest resolution */
3581         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3582             int area = 0, idx = -1;
3583             for (i = 0; i < nb_input_streams; i++) {
3584                 ist = &input_streams[i];
3585                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3586                     ist->st->codec->width * ist->st->codec->height > area) {
3587                     area = ist->st->codec->width * ist->st->codec->height;
3588                     idx = i;
3589                 }
3590             }
3591             NEW_STREAM(video, idx);
3592         }
3593
3594         /* audio: most channels */
3595         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3596             int channels = 0, idx = -1;
3597             for (i = 0; i < nb_input_streams; i++) {
3598                 ist = &input_streams[i];
3599                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3600                     ist->st->codec->channels > channels) {
3601                     channels = ist->st->codec->channels;
3602                     idx = i;
3603                 }
3604             }
3605             NEW_STREAM(audio, idx);
3606         }
3607
3608         /* subtitles: pick first */
3609         if (!o->subtitle_disable && (oc->oformat->subtitle_codec != CODEC_ID_NONE || subtitle_codec_name)) {
3610             for (i = 0; i < nb_input_streams; i++)
3611                 if (input_streams[i].st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3612                     NEW_STREAM(subtitle, i);
3613                     break;
3614                 }
3615         }
3616         /* do something with data? */
3617     } else {
3618         for (i = 0; i < o->nb_stream_maps; i++) {
3619             StreamMap *map = &o->stream_maps[i];
3620
3621             if (map->disabled)
3622                 continue;
3623
3624             ist = &input_streams[input_files[map->file_index].ist_index + map->stream_index];
3625             switch (ist->st->codec->codec_type) {
3626             case AVMEDIA_TYPE_VIDEO:    ost = new_video_stream(o, oc);    break;
3627             case AVMEDIA_TYPE_AUDIO:    ost = new_audio_stream(o, oc);    break;
3628             case AVMEDIA_TYPE_SUBTITLE: ost = new_subtitle_stream(o, oc); break;
3629             case AVMEDIA_TYPE_DATA:     ost = new_data_stream(o, oc);     break;
3630             default:
3631                 av_log(NULL, AV_LOG_ERROR, "Cannot map stream #%d.%d - unsupported type.\n",
3632                        map->file_index, map->stream_index);
3633                 exit_program(1);
3634             }
3635
3636             ost->source_index = input_files[map->file_index].ist_index + map->stream_index;
3637             ost->sync_ist = &input_streams[input_files[map->sync_file_index].ist_index +
3638                                            map->sync_stream_