ffmpeg: do not use a negative total_size (AVERROR) in bitrate estimation.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48 #include "libswresample/swresample.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/vsrc_buffer.h"
58 #endif
59
60 #if HAVE_SYS_RESOURCE_H
61 #include <sys/types.h>
62 #include <sys/time.h>
63 #include <sys/resource.h>
64 #elif HAVE_GETPROCESSTIMES
65 #include <windows.h>
66 #endif
67 #if HAVE_GETPROCESSMEMORYINFO
68 #include <windows.h>
69 #include <psapi.h>
70 #endif
71
72 #if HAVE_SYS_SELECT_H
73 #include <sys/select.h>
74 #endif
75
76 #if HAVE_TERMIOS_H
77 #include <fcntl.h>
78 #include <sys/ioctl.h>
79 #include <sys/time.h>
80 #include <termios.h>
81 #elif HAVE_KBHIT
82 #include <conio.h>
83 #endif
84 #include <time.h>
85
86 #include "cmdutils.h"
87
88 #include "libavutil/avassert.h"
89
90 const char program_name[] = "ffmpeg";
91 const int program_birth_year = 2000;
92
93 /* select an input stream for an output stream */
94 typedef struct StreamMap {
95     int disabled;           /** 1 is this mapping is disabled by a negative map */
96     int file_index;
97     int stream_index;
98     int sync_file_index;
99     int sync_stream_index;
100 } StreamMap;
101
102 typedef struct {
103     int  file_idx,  stream_idx,  channel_idx; // input
104     int ofile_idx, ostream_idx;               // output
105 } AudioChannelMap;
106
107 /**
108  * select an input file for an output file
109  */
110 typedef struct MetadataMap {
111     int  file;      ///< file index
112     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
113     int  index;     ///< stream/chapter/program number
114 } MetadataMap;
115
116 static const OptionDef options[];
117
118 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
119
120 static int frame_bits_per_raw_sample = 0;
121 static int video_discard = 0;
122 static int same_quant = 0;
123 static int do_deinterlace = 0;
124 static int intra_dc_precision = 8;
125 static int loop_input = 0;
126 static int loop_output = AVFMT_NOOUTPUTLOOP;
127 static int qp_hist = 0;
128 static int intra_only = 0;
129 static const char *video_codec_name    = NULL;
130 static const char *audio_codec_name    = NULL;
131 static const char *subtitle_codec_name = NULL;
132
133 static int file_overwrite = 0;
134 static int no_file_overwrite = 0;
135 static int do_benchmark = 0;
136 static int do_hex_dump = 0;
137 static int do_pkt_dump = 0;
138 static int do_psnr = 0;
139 static int do_pass = 0;
140 static const char *pass_logfilename_prefix;
141 static int video_sync_method= -1;
142 static int audio_sync_method= 0;
143 static float audio_drift_threshold= 0.1;
144 static int copy_ts= 0;
145 static int copy_tb= 0;
146 static int opt_shortest = 0;
147 static char *vstats_filename;
148 static FILE *vstats_file;
149
150 static int audio_volume = 256;
151
152 static int exit_on_error = 0;
153 static int using_stdin = 0;
154 static int run_as_daemon  = 0;
155 static volatile int received_nb_signals = 0;
156 static int64_t video_size = 0;
157 static int64_t audio_size = 0;
158 static int64_t extra_size = 0;
159 static int nb_frames_dup = 0;
160 static int nb_frames_drop = 0;
161 static int input_sync;
162
163 static float dts_delta_threshold = 10;
164
165 static int print_stats = 1;
166
167 static uint8_t *audio_buf;
168 static uint8_t *audio_out;
169 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
170
171 static void *samples;
172 static uint8_t *input_tmp= NULL;
173
174 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
175
176 typedef struct InputStream {
177     int file_index;
178     AVStream *st;
179     int discard;             /* true if stream data should be discarded */
180     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
181     AVCodec *dec;
182
183     int64_t       start;     /* time when read started */
184     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
185                                 is not defined */
186     int64_t       pts;       /* current pts */
187     double ts_scale;
188     int is_start;            /* is 1 at the start and after a discontinuity */
189     int showed_multi_packet_warning;
190     AVDictionary *opts;
191 } InputStream;
192
193 typedef struct InputFile {
194     AVFormatContext *ctx;
195     int eof_reached;      /* true if eof reached */
196     int ist_index;        /* index of first stream in input_streams */
197     int buffer_size;      /* current total buffer size */
198     int64_t ts_offset;
199     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
200                              from ctx.nb_streams if new streams appear during av_read_frame() */
201     int rate_emu;
202 } InputFile;
203
204 typedef struct OutputStream {
205     int file_index;          /* file index */
206     int index;               /* stream index in the output file */
207     int source_index;        /* InputStream index */
208     AVStream *st;            /* stream in the output file */
209     int encoding_needed;     /* true if encoding needed for this stream */
210     int frame_number;
211     /* input pts and corresponding output pts
212        for A/V sync */
213     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
214     struct InputStream *sync_ist; /* input stream to sync against */
215     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
216     AVBitStreamFilterContext *bitstream_filters;
217     AVCodec *enc;
218     int64_t max_frames;
219
220     /* video only */
221     int video_resample;
222     AVFrame resample_frame;              /* temporary frame for image resampling */
223     struct SwsContext *img_resample_ctx; /* for image resampling */
224     int resample_height;
225     int resample_width;
226     int resample_pix_fmt;
227     AVRational frame_rate;
228     int force_fps;
229     int top_field_first;
230
231     float frame_aspect_ratio;
232
233     /* forced key frames */
234     int64_t *forced_kf_pts;
235     int forced_kf_count;
236     int forced_kf_index;
237
238     /* audio only */
239     int audio_resample;
240     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
241     int audio_channels_mapped;           ///< number of channels in audio_channels_map
242     int resample_sample_fmt;
243     int resample_channels;
244     int resample_sample_rate;
245     float rematrix_volume;
246     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
247     FILE *logfile;
248
249     struct SwrContext *swr;
250
251 #if CONFIG_AVFILTER
252     AVFilterContext *output_video_filter;
253     AVFilterContext *input_video_filter;
254     AVFilterBufferRef *picref;
255     char *avfilter;
256     AVFilterGraph *graph;
257 #endif
258
259     int64_t sws_flags;
260     AVDictionary *opts;
261     int is_past_recording_time;
262     int stream_copy;
263     const char *attachment_filename;
264     int copy_initial_nonkeyframes;
265 } OutputStream;
266
267
268 #if HAVE_TERMIOS_H
269
270 /* init terminal so that we can grab keys */
271 static struct termios oldtty;
272 #endif
273
274 typedef struct OutputFile {
275     AVFormatContext *ctx;
276     AVDictionary *opts;
277     int ost_index;       /* index of the first stream in output_streams */
278     int64_t recording_time; /* desired length of the resulting file in microseconds */
279     int64_t start_time;     /* start time in microseconds */
280     uint64_t limit_filesize;
281 } OutputFile;
282
283 static InputStream *input_streams = NULL;
284 static int         nb_input_streams = 0;
285 static InputFile   *input_files   = NULL;
286 static int         nb_input_files   = 0;
287
288 static OutputStream *output_streams = NULL;
289 static int        nb_output_streams = 0;
290 static OutputFile   *output_files   = NULL;
291 static int        nb_output_files   = 0;
292
293 typedef struct OptionsContext {
294     /* input/output options */
295     int64_t start_time;
296     const char *format;
297
298     SpecifierOpt *codec_names;
299     int        nb_codec_names;
300     SpecifierOpt *audio_channels;
301     int        nb_audio_channels;
302     SpecifierOpt *audio_sample_rate;
303     int        nb_audio_sample_rate;
304     SpecifierOpt *rematrix_volume;
305     int        nb_rematrix_volume;
306     SpecifierOpt *frame_rates;
307     int        nb_frame_rates;
308     SpecifierOpt *frame_sizes;
309     int        nb_frame_sizes;
310     SpecifierOpt *frame_pix_fmts;
311     int        nb_frame_pix_fmts;
312
313     /* input options */
314     int64_t input_ts_offset;
315     int rate_emu;
316
317     SpecifierOpt *ts_scale;
318     int        nb_ts_scale;
319     SpecifierOpt *dump_attachment;
320     int        nb_dump_attachment;
321
322     /* output options */
323     StreamMap *stream_maps;
324     int     nb_stream_maps;
325     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
326     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
327     /* first item specifies output metadata, second is input */
328     MetadataMap (*meta_data_maps)[2];
329     int nb_meta_data_maps;
330     int metadata_global_manual;
331     int metadata_streams_manual;
332     int metadata_chapters_manual;
333     const char **attachments;
334     int       nb_attachments;
335
336     int chapters_input_file;
337
338     int64_t recording_time;
339     uint64_t limit_filesize;
340     float mux_preload;
341     float mux_max_delay;
342
343     int video_disable;
344     int audio_disable;
345     int subtitle_disable;
346     int data_disable;
347
348     /* indexed by output file stream index */
349     int   *streamid_map;
350     int nb_streamid_map;
351
352     SpecifierOpt *metadata;
353     int        nb_metadata;
354     SpecifierOpt *max_frames;
355     int        nb_max_frames;
356     SpecifierOpt *bitstream_filters;
357     int        nb_bitstream_filters;
358     SpecifierOpt *codec_tags;
359     int        nb_codec_tags;
360     SpecifierOpt *sample_fmts;
361     int        nb_sample_fmts;
362     SpecifierOpt *qscale;
363     int        nb_qscale;
364     SpecifierOpt *forced_key_frames;
365     int        nb_forced_key_frames;
366     SpecifierOpt *force_fps;
367     int        nb_force_fps;
368     SpecifierOpt *frame_aspect_ratios;
369     int        nb_frame_aspect_ratios;
370     SpecifierOpt *rc_overrides;
371     int        nb_rc_overrides;
372     SpecifierOpt *intra_matrices;
373     int        nb_intra_matrices;
374     SpecifierOpt *inter_matrices;
375     int        nb_inter_matrices;
376     SpecifierOpt *top_field_first;
377     int        nb_top_field_first;
378     SpecifierOpt *presets;
379     int        nb_presets;
380     SpecifierOpt *copy_initial_nonkeyframes;
381     int        nb_copy_initial_nonkeyframes;
382 #if CONFIG_AVFILTER
383     SpecifierOpt *filters;
384     int        nb_filters;
385 #endif
386 } OptionsContext;
387
388 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
389 {\
390     int i, ret;\
391     for (i = 0; i < o->nb_ ## name; i++) {\
392         char *spec = o->name[i].specifier;\
393         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
394             outvar = o->name[i].u.type;\
395         else if (ret < 0)\
396             exit_program(1);\
397     }\
398 }
399
400 static void reset_options(OptionsContext *o, int is_input)
401 {
402     const OptionDef *po = options;
403     OptionsContext bak= *o;
404
405     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
406     while (po->name) {
407         void *dst = (uint8_t*)o + po->u.off;
408
409         if (po->flags & OPT_SPEC) {
410             SpecifierOpt **so = dst;
411             int i, *count = (int*)(so + 1);
412             for (i = 0; i < *count; i++) {
413                 av_freep(&(*so)[i].specifier);
414                 if (po->flags & OPT_STRING)
415                     av_freep(&(*so)[i].u.str);
416             }
417             av_freep(so);
418             *count = 0;
419         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
420             av_freep(dst);
421         po++;
422     }
423
424     av_freep(&o->stream_maps);
425     av_freep(&o->audio_channel_maps);
426     av_freep(&o->meta_data_maps);
427     av_freep(&o->streamid_map);
428
429     memset(o, 0, sizeof(*o));
430
431     if(is_input) o->recording_time = bak.recording_time;
432     else         o->recording_time = INT64_MAX;
433     o->mux_max_delay  = 0.7;
434     o->limit_filesize = UINT64_MAX;
435     o->chapters_input_file = INT_MAX;
436
437     uninit_opts();
438     init_opts();
439 }
440
441 #if CONFIG_AVFILTER
442
443 static int configure_video_filters(InputStream *ist, OutputStream *ost)
444 {
445     AVFilterContext *last_filter, *filter;
446     /** filter graph containing all filters including input & output */
447     AVCodecContext *codec = ost->st->codec;
448     AVCodecContext *icodec = ist->st->codec;
449     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
450     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
451     AVRational sample_aspect_ratio;
452     char args[255];
453     int ret;
454
455     ost->graph = avfilter_graph_alloc();
456
457     if (ist->st->sample_aspect_ratio.num){
458         sample_aspect_ratio = ist->st->sample_aspect_ratio;
459     }else
460         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
461
462     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
463              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
464              sample_aspect_ratio.num, sample_aspect_ratio.den);
465
466     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
467                                        "src", args, NULL, ost->graph);
468     if (ret < 0)
469         return ret;
470 #if FF_API_OLD_VSINK_API
471     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
472                                        "out", NULL, pix_fmts, ost->graph);
473 #else
474     buffersink_params->pixel_fmts = pix_fmts;
475     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
476                                        "out", NULL, buffersink_params, ost->graph);
477 #endif
478     av_freep(&buffersink_params);
479     if (ret < 0)
480         return ret;
481     last_filter = ost->input_video_filter;
482
483     if (codec->width  != icodec->width || codec->height != icodec->height) {
484         snprintf(args, 255, "%d:%d:flags=0x%X",
485                  codec->width,
486                  codec->height,
487                  (unsigned)ost->sws_flags);
488         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
489                                                 NULL, args, NULL, ost->graph)) < 0)
490             return ret;
491         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
492             return ret;
493         last_filter = filter;
494     }
495
496     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
497     ost->graph->scale_sws_opts = av_strdup(args);
498
499     if (ost->avfilter) {
500         AVFilterInOut *outputs = avfilter_inout_alloc();
501         AVFilterInOut *inputs  = avfilter_inout_alloc();
502
503         outputs->name    = av_strdup("in");
504         outputs->filter_ctx = last_filter;
505         outputs->pad_idx = 0;
506         outputs->next    = NULL;
507
508         inputs->name    = av_strdup("out");
509         inputs->filter_ctx = ost->output_video_filter;
510         inputs->pad_idx = 0;
511         inputs->next    = NULL;
512
513         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
514             return ret;
515         av_freep(&ost->avfilter);
516     } else {
517         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
518             return ret;
519     }
520
521     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
522         return ret;
523
524     codec->width  = ost->output_video_filter->inputs[0]->w;
525     codec->height = ost->output_video_filter->inputs[0]->h;
526     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
527         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
528         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
529         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
530
531     return 0;
532 }
533 #endif /* CONFIG_AVFILTER */
534
535 static void term_exit(void)
536 {
537     av_log(NULL, AV_LOG_QUIET, "%s", "");
538 #if HAVE_TERMIOS_H
539     if(!run_as_daemon)
540         tcsetattr (0, TCSANOW, &oldtty);
541 #endif
542 }
543
544 static volatile int received_sigterm = 0;
545
546 static void sigterm_handler(int sig)
547 {
548     received_sigterm = sig;
549     received_nb_signals++;
550     term_exit();
551 }
552
553 static void term_init(void)
554 {
555 #if HAVE_TERMIOS_H
556     if(!run_as_daemon){
557     struct termios tty;
558
559     tcgetattr (0, &tty);
560     oldtty = tty;
561     atexit(term_exit);
562
563     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
564                           |INLCR|IGNCR|ICRNL|IXON);
565     tty.c_oflag |= OPOST;
566     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
567     tty.c_cflag &= ~(CSIZE|PARENB);
568     tty.c_cflag |= CS8;
569     tty.c_cc[VMIN] = 1;
570     tty.c_cc[VTIME] = 0;
571
572     tcsetattr (0, TCSANOW, &tty);
573     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
574     }
575 #endif
576     avformat_network_deinit();
577
578     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
579     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
580 #ifdef SIGXCPU
581     signal(SIGXCPU, sigterm_handler);
582 #endif
583 }
584
585 /* read a key without blocking */
586 static int read_key(void)
587 {
588     unsigned char ch;
589 #if HAVE_TERMIOS_H
590     int n = 1;
591     struct timeval tv;
592     fd_set rfds;
593
594     FD_ZERO(&rfds);
595     FD_SET(0, &rfds);
596     tv.tv_sec = 0;
597     tv.tv_usec = 0;
598     n = select(1, &rfds, NULL, NULL, &tv);
599     if (n > 0) {
600         n = read(0, &ch, 1);
601         if (n == 1)
602             return ch;
603
604         return n;
605     }
606 #elif HAVE_KBHIT
607 #    if HAVE_PEEKNAMEDPIPE
608     static int is_pipe;
609     static HANDLE input_handle;
610     DWORD dw, nchars;
611     if(!input_handle){
612         input_handle = GetStdHandle(STD_INPUT_HANDLE);
613         is_pipe = !GetConsoleMode(input_handle, &dw);
614     }
615
616     if (stdin->_cnt > 0) {
617         read(0, &ch, 1);
618         return ch;
619     }
620     if (is_pipe) {
621         /* When running under a GUI, you will end here. */
622         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
623             return -1;
624         //Read it
625         if(nchars != 0) {
626             read(0, &ch, 1);
627             return ch;
628         }else{
629             return -1;
630         }
631     }
632 #    endif
633     if(kbhit())
634         return(getch());
635 #endif
636     return -1;
637 }
638
639 static int decode_interrupt_cb(void *ctx)
640 {
641     return received_nb_signals > 1;
642 }
643
644 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
645
646 void av_noreturn exit_program(int ret)
647 {
648     int i;
649
650     /* close files */
651     for(i=0;i<nb_output_files;i++) {
652         AVFormatContext *s = output_files[i].ctx;
653         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
654             avio_close(s->pb);
655         avformat_free_context(s);
656         av_dict_free(&output_files[i].opts);
657     }
658     for(i=0;i<nb_input_files;i++) {
659         av_close_input_file(input_files[i].ctx);
660     }
661     for (i = 0; i < nb_input_streams; i++)
662         av_dict_free(&input_streams[i].opts);
663
664     if (vstats_file)
665         fclose(vstats_file);
666     av_free(vstats_filename);
667
668     av_freep(&input_streams);
669     av_freep(&input_files);
670     av_freep(&output_streams);
671     av_freep(&output_files);
672
673     uninit_opts();
674     av_free(audio_buf);
675     av_free(audio_out);
676     allocated_audio_buf_size= allocated_audio_out_size= 0;
677     av_free(samples);
678
679 #if CONFIG_AVFILTER
680     avfilter_uninit();
681 #endif
682     avformat_network_deinit();
683
684     av_freep(&input_tmp);
685
686     if (received_sigterm) {
687         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
688                (int) received_sigterm);
689         exit (255);
690     }
691
692     exit(ret); /* not all OS-es handle main() return value */
693 }
694
695 static void assert_avoptions(AVDictionary *m)
696 {
697     AVDictionaryEntry *t;
698     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
699         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
700         exit_program(1);
701     }
702 }
703
704 static void assert_codec_experimental(AVCodecContext *c, int encoder)
705 {
706     const char *codec_string = encoder ? "encoder" : "decoder";
707     AVCodec *codec;
708     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
709         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
710         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
711                 "results.\nAdd '-strict experimental' if you want to use it.\n",
712                 codec_string, c->codec->name);
713         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
714         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
715             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
716                    codec_string, codec->name);
717         exit_program(1);
718     }
719 }
720
721 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
722 {
723     if(codec && codec->sample_fmts){
724         const enum AVSampleFormat *p= codec->sample_fmts;
725         for(; *p!=-1; p++){
726             if(*p == st->codec->sample_fmt)
727                 break;
728         }
729         if (*p == -1) {
730             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
731                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
732             if(av_get_sample_fmt_name(st->codec->sample_fmt))
733             av_log(NULL, AV_LOG_WARNING,
734                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
735                    av_get_sample_fmt_name(st->codec->sample_fmt),
736                    codec->name,
737                    av_get_sample_fmt_name(codec->sample_fmts[0]));
738             st->codec->sample_fmt = codec->sample_fmts[0];
739         }
740     }
741 }
742
743 static void choose_sample_rate(AVStream *st, AVCodec *codec)
744 {
745     if(codec && codec->supported_samplerates){
746         const int *p= codec->supported_samplerates;
747         int best=0;
748         int best_dist=INT_MAX;
749         for(; *p; p++){
750             int dist= abs(st->codec->sample_rate - *p);
751             if(dist < best_dist){
752                 best_dist= dist;
753                 best= *p;
754             }
755         }
756         if(best_dist){
757             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
758         }
759         st->codec->sample_rate= best;
760     }
761 }
762
763 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
764 {
765     if(codec && codec->pix_fmts){
766         const enum PixelFormat *p= codec->pix_fmts;
767         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
768             if(st->codec->codec_id==CODEC_ID_MJPEG){
769                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
770             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
771                 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};
772             }
773         }
774         for (; *p != PIX_FMT_NONE; p++) {
775             if(*p == st->codec->pix_fmt)
776                 break;
777         }
778         if (*p == PIX_FMT_NONE) {
779             if(st->codec->pix_fmt != PIX_FMT_NONE)
780                 av_log(NULL, AV_LOG_WARNING,
781                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
782                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
783                         codec->name,
784                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
785             st->codec->pix_fmt = codec->pix_fmts[0];
786         }
787     }
788 }
789
790 static double get_sync_ipts(const OutputStream *ost)
791 {
792     const InputStream *ist = ost->sync_ist;
793     OutputFile *of = &output_files[ost->file_index];
794     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
795 }
796
797 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
798 {
799     int ret;
800
801     while(bsfc){
802         AVPacket new_pkt= *pkt;
803         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
804                                           &new_pkt.data, &new_pkt.size,
805                                           pkt->data, pkt->size,
806                                           pkt->flags & AV_PKT_FLAG_KEY);
807         if(a>0){
808             av_free_packet(pkt);
809             new_pkt.destruct= av_destruct_packet;
810         } else if(a<0){
811             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
812                    bsfc->filter->name, pkt->stream_index,
813                    avctx->codec ? avctx->codec->name : "copy");
814             print_error("", a);
815             if (exit_on_error)
816                 exit_program(1);
817         }
818         *pkt= new_pkt;
819
820         bsfc= bsfc->next;
821     }
822
823     ret= av_interleaved_write_frame(s, pkt);
824     if(ret < 0){
825         print_error("av_interleaved_write_frame()", ret);
826         exit_program(1);
827     }
828 }
829
830 static void do_audio_out(AVFormatContext *s,
831                          OutputStream *ost,
832                          InputStream *ist,
833                          unsigned char *buf, int size)
834 {
835     uint8_t *buftmp;
836     int64_t audio_out_size, audio_buf_size;
837     int64_t allocated_for_size= size;
838
839     int size_out, frame_bytes, ret, resample_changed;
840     AVCodecContext *enc= ost->st->codec;
841     AVCodecContext *dec= ist->st->codec;
842     int osize = av_get_bytes_per_sample(enc->sample_fmt);
843     int isize = av_get_bytes_per_sample(dec->sample_fmt);
844     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
845
846 need_realloc:
847     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
848     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
849     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
850     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
851     audio_buf_size*= osize*enc->channels;
852
853     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
854     if(coded_bps > 8*osize)
855         audio_out_size= audio_out_size * coded_bps / (8*osize);
856     audio_out_size += FF_MIN_BUFFER_SIZE;
857
858     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
859         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
860         exit_program(1);
861     }
862
863     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
864     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
865     if (!audio_buf || !audio_out){
866         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
867         exit_program(1);
868     }
869
870     if (enc->channels != dec->channels
871      || enc->sample_fmt != dec->sample_fmt)
872         ost->audio_resample = 1;
873
874     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
875                        ost->resample_channels    != dec->channels   ||
876                        ost->resample_sample_rate != dec->sample_rate;
877
878     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
879         if (resample_changed) {
880             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",
881                    ist->file_index, ist->st->index,
882                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
883                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
884             ost->resample_sample_fmt  = dec->sample_fmt;
885             ost->resample_channels    = dec->channels;
886             ost->resample_sample_rate = dec->sample_rate;
887             swr_free(&ost->swr);
888         }
889         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
890         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
891             ost->resample_sample_fmt  == enc->sample_fmt &&
892             ost->resample_channels    == enc->channels   &&
893             ost->resample_sample_rate == enc->sample_rate) {
894             //ost->swr = NULL;
895             ost->audio_resample = 0;
896         } else {
897             ost->swr = swr_alloc_set_opts(ost->swr,
898                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
899                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
900                                           0, NULL);
901             if (ost->audio_channels_mapped)
902                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
903             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
904             if (ost->audio_channels_mapped) {
905                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
906                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
907             }
908             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
909             av_opt_set_int(ost->swr, "och", enc->channels, 0);
910             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
911             if(ost->swr && swr_init(ost->swr) < 0){
912                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
913                 swr_free(&ost->swr);
914             }
915
916             if (!ost->swr) {
917                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
918                         dec->channels, dec->sample_rate,
919                         enc->channels, enc->sample_rate);
920                 exit_program(1);
921             }
922         }
923     }
924
925     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
926
927     if(audio_sync_method){
928         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
929                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
930         double idelta= delta*dec->sample_rate / enc->sample_rate;
931         int byte_delta= ((int)idelta)*2*dec->channels;
932
933         //FIXME resample delay
934         if(fabs(delta) > 50){
935             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
936                 if(byte_delta < 0){
937                     byte_delta= FFMAX(byte_delta, -size);
938                     size += byte_delta;
939                     buf  -= byte_delta;
940                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n", (int)-delta);
941                     if(!size)
942                         return;
943                     ist->is_start=0;
944                 }else{
945                     input_tmp= av_realloc(input_tmp, byte_delta + size);
946
947                     if(byte_delta > allocated_for_size - size){
948                         allocated_for_size= byte_delta + (int64_t)size;
949                         goto need_realloc;
950                     }
951                     ist->is_start=0;
952
953                     memset(input_tmp, 0, byte_delta);
954                     memcpy(input_tmp + byte_delta, buf, size);
955                     buf= input_tmp;
956                     size += byte_delta;
957                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", (int)delta);
958                 }
959             }else if(audio_sync_method>1){
960                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
961                 av_assert0(ost->audio_resample);
962                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
963                        delta, comp, enc->sample_rate);
964 //                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));
965                 swr_compensate(ost->swr, comp, enc->sample_rate);
966             }
967         }
968     }else
969         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
970                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
971
972     if (ost->audio_resample) {
973         buftmp = audio_buf;
974         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
975                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
976         size_out = size_out * enc->channels * osize;
977     } else {
978         buftmp = buf;
979         size_out = size;
980     }
981
982     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
983
984     /* now encode as many frames as possible */
985     if (enc->frame_size > 1) {
986         /* output resampled raw samples */
987         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
988             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
989             exit_program(1);
990         }
991         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
992
993         frame_bytes = enc->frame_size * osize * enc->channels;
994
995         while (av_fifo_size(ost->fifo) >= frame_bytes) {
996             AVPacket pkt;
997             av_init_packet(&pkt);
998
999             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1000
1001             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1002
1003             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1004                                        (short *)audio_buf);
1005             if (ret < 0) {
1006                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1007                 exit_program(1);
1008             }
1009             audio_size += ret;
1010             pkt.stream_index= ost->index;
1011             pkt.data= audio_out;
1012             pkt.size= ret;
1013             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1014                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1015             pkt.flags |= AV_PKT_FLAG_KEY;
1016             write_frame(s, &pkt, enc, ost->bitstream_filters);
1017
1018             ost->sync_opts += enc->frame_size;
1019         }
1020     } else {
1021         AVPacket pkt;
1022         av_init_packet(&pkt);
1023
1024         ost->sync_opts += size_out / (osize * enc->channels);
1025
1026         /* output a pcm frame */
1027         /* determine the size of the coded buffer */
1028         size_out /= osize;
1029         if (coded_bps)
1030             size_out = size_out*coded_bps/8;
1031
1032         if(size_out > audio_out_size){
1033             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1034             exit_program(1);
1035         }
1036
1037         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1038         ret = avcodec_encode_audio(enc, audio_out, size_out,
1039                                    (short *)buftmp);
1040         if (ret < 0) {
1041             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1042             exit_program(1);
1043         }
1044         audio_size += ret;
1045         pkt.stream_index= ost->index;
1046         pkt.data= audio_out;
1047         pkt.size= ret;
1048         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1049             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1050         pkt.flags |= AV_PKT_FLAG_KEY;
1051         write_frame(s, &pkt, enc, ost->bitstream_filters);
1052     }
1053 }
1054
1055 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1056 {
1057     AVCodecContext *dec;
1058     AVPicture *picture2;
1059     AVPicture picture_tmp;
1060     uint8_t *buf = 0;
1061
1062     dec = ist->st->codec;
1063
1064     /* deinterlace : must be done before any resize */
1065     if (do_deinterlace) {
1066         int size;
1067
1068         /* create temporary picture */
1069         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1070         buf = av_malloc(size);
1071         if (!buf)
1072             return;
1073
1074         picture2 = &picture_tmp;
1075         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1076
1077         if(avpicture_deinterlace(picture2, picture,
1078                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1079             /* if error, do not deinterlace */
1080             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1081             av_free(buf);
1082             buf = NULL;
1083             picture2 = picture;
1084         }
1085     } else {
1086         picture2 = picture;
1087     }
1088
1089     if (picture != picture2)
1090         *picture = *picture2;
1091     *bufp = buf;
1092 }
1093
1094 static void do_subtitle_out(AVFormatContext *s,
1095                             OutputStream *ost,
1096                             InputStream *ist,
1097                             AVSubtitle *sub,
1098                             int64_t pts)
1099 {
1100     static uint8_t *subtitle_out = NULL;
1101     int subtitle_out_max_size = 1024 * 1024;
1102     int subtitle_out_size, nb, i;
1103     AVCodecContext *enc;
1104     AVPacket pkt;
1105
1106     if (pts == AV_NOPTS_VALUE) {
1107         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1108         if (exit_on_error)
1109             exit_program(1);
1110         return;
1111     }
1112
1113     enc = ost->st->codec;
1114
1115     if (!subtitle_out) {
1116         subtitle_out = av_malloc(subtitle_out_max_size);
1117     }
1118
1119     /* Note: DVB subtitle need one packet to draw them and one other
1120        packet to clear them */
1121     /* XXX: signal it in the codec context ? */
1122     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1123         nb = 2;
1124     else
1125         nb = 1;
1126
1127     for(i = 0; i < nb; i++) {
1128         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1129         // start_display_time is required to be 0
1130         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1131         sub->end_display_time -= sub->start_display_time;
1132         sub->start_display_time = 0;
1133         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1134                                                     subtitle_out_max_size, sub);
1135         if (subtitle_out_size < 0) {
1136             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1137             exit_program(1);
1138         }
1139
1140         av_init_packet(&pkt);
1141         pkt.stream_index = ost->index;
1142         pkt.data = subtitle_out;
1143         pkt.size = subtitle_out_size;
1144         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1145         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1146             /* XXX: the pts correction is handled here. Maybe handling
1147                it in the codec would be better */
1148             if (i == 0)
1149                 pkt.pts += 90 * sub->start_display_time;
1150             else
1151                 pkt.pts += 90 * sub->end_display_time;
1152         }
1153         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1154     }
1155 }
1156
1157 static int bit_buffer_size= 1024*256;
1158 static uint8_t *bit_buffer= NULL;
1159
1160 static void do_video_resample(OutputStream *ost,
1161                               InputStream *ist,
1162                               AVFrame *in_picture,
1163                               AVFrame **out_picture)
1164 {
1165 #if CONFIG_AVFILTER
1166     *out_picture = in_picture;
1167 #else
1168     AVCodecContext *dec = ist->st->codec;
1169     AVCodecContext *enc = ost->st->codec;
1170     int resample_changed = ost->resample_width   != dec->width  ||
1171                            ost->resample_height  != dec->height ||
1172                            ost->resample_pix_fmt != dec->pix_fmt;
1173
1174     *out_picture = in_picture;
1175     if (resample_changed) {
1176         av_log(NULL, AV_LOG_INFO,
1177                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1178                ist->file_index, ist->st->index,
1179                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1180                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1181         ost->resample_width   = dec->width;
1182         ost->resample_height  = dec->height;
1183         ost->resample_pix_fmt = dec->pix_fmt;
1184     }
1185
1186     ost->video_resample = dec->width   != enc->width  ||
1187                           dec->height  != enc->height ||
1188                           dec->pix_fmt != enc->pix_fmt;
1189
1190     if (ost->video_resample) {
1191         *out_picture = &ost->resample_frame;
1192         if (!ost->img_resample_ctx || resample_changed) {
1193             /* initialize the destination picture */
1194             if (!ost->resample_frame.data[0]) {
1195                 avcodec_get_frame_defaults(&ost->resample_frame);
1196                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1197                                     enc->width, enc->height)) {
1198                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1199                     exit_program(1);
1200                 }
1201             }
1202             /* initialize a new scaler context */
1203             sws_freeContext(ost->img_resample_ctx);
1204             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1205                                                    enc->width, enc->height, enc->pix_fmt,
1206                                                    ost->sws_flags, NULL, NULL, NULL);
1207             if (ost->img_resample_ctx == NULL) {
1208                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1209                 exit_program(1);
1210             }
1211         }
1212         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1213               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1214     }
1215 #endif
1216 }
1217
1218
1219 static void do_video_out(AVFormatContext *s,
1220                          OutputStream *ost,
1221                          InputStream *ist,
1222                          AVFrame *in_picture,
1223                          int *frame_size, float quality)
1224 {
1225     int nb_frames, i, ret, format_video_sync;
1226     AVFrame *final_picture;
1227     AVCodecContext *enc;
1228     double sync_ipts;
1229     double duration = 0;
1230
1231     enc = ost->st->codec;
1232
1233     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1234         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1235         if(ist->st->avg_frame_rate.num)
1236             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1237
1238         duration /= av_q2d(enc->time_base);
1239     }
1240
1241     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1242
1243     /* by default, we output a single frame */
1244     nb_frames = 1;
1245
1246     *frame_size = 0;
1247
1248     format_video_sync = video_sync_method;
1249     if (format_video_sync < 0)
1250         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1251
1252     if (format_video_sync) {
1253         double vdelta = sync_ipts - ost->sync_opts + duration;
1254         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1255         if (vdelta < -1.1)
1256             nb_frames = 0;
1257         else if (format_video_sync == 2) {
1258             if(vdelta<=-0.6){
1259                 nb_frames=0;
1260             }else if(vdelta>0.6)
1261                 ost->sync_opts= lrintf(sync_ipts);
1262         }else if (vdelta > 1.1)
1263             nb_frames = lrintf(vdelta);
1264 //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);
1265         if (nb_frames == 0){
1266             ++nb_frames_drop;
1267             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1268         }else if (nb_frames > 1) {
1269             nb_frames_dup += nb_frames - 1;
1270             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1271         }
1272     }else
1273         ost->sync_opts= lrintf(sync_ipts);
1274
1275     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1276     if (nb_frames <= 0)
1277         return;
1278
1279     do_video_resample(ost, ist, in_picture, &final_picture);
1280
1281     /* duplicates frame if needed */
1282     for(i=0;i<nb_frames;i++) {
1283         AVPacket pkt;
1284         av_init_packet(&pkt);
1285         pkt.stream_index= ost->index;
1286
1287         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1288             /* raw pictures are written as AVPicture structure to
1289                avoid any copies. We support temporarily the older
1290                method. */
1291             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1292             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1293             pkt.data= (uint8_t *)final_picture;
1294             pkt.size=  sizeof(AVPicture);
1295             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1296             pkt.flags |= AV_PKT_FLAG_KEY;
1297
1298             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1299         } else {
1300             AVFrame big_picture;
1301
1302             big_picture= *final_picture;
1303             /* better than nothing: use input picture interlaced
1304                settings */
1305             big_picture.interlaced_frame = in_picture->interlaced_frame;
1306             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1307                 if (ost->top_field_first == -1)
1308                     big_picture.top_field_first = in_picture->top_field_first;
1309                 else
1310                     big_picture.top_field_first = !!ost->top_field_first;
1311             }
1312
1313             /* handles same_quant here. This is not correct because it may
1314                not be a global option */
1315             big_picture.quality = quality;
1316             if (!enc->me_threshold)
1317                 big_picture.pict_type = 0;
1318 //            big_picture.pts = AV_NOPTS_VALUE;
1319             big_picture.pts= ost->sync_opts;
1320 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1321 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1322             if (ost->forced_kf_index < ost->forced_kf_count &&
1323                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1324                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1325                 ost->forced_kf_index++;
1326             }
1327             ret = avcodec_encode_video(enc,
1328                                        bit_buffer, bit_buffer_size,
1329                                        &big_picture);
1330             if (ret < 0) {
1331                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1332                 exit_program(1);
1333             }
1334
1335             if(ret>0){
1336                 pkt.data= bit_buffer;
1337                 pkt.size= ret;
1338                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1339                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1340 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1341    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1342    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1343
1344                 if(enc->coded_frame->key_frame)
1345                     pkt.flags |= AV_PKT_FLAG_KEY;
1346                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1347                 *frame_size = ret;
1348                 video_size += ret;
1349                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1350                 //        enc->frame_number-1, ret, enc->pict_type);
1351                 /* if two pass, output log */
1352                 if (ost->logfile && enc->stats_out) {
1353                     fprintf(ost->logfile, "%s", enc->stats_out);
1354                 }
1355             }
1356         }
1357         ost->sync_opts++;
1358         ost->frame_number++;
1359     }
1360 }
1361
1362 static double psnr(double d)
1363 {
1364     return -10.0*log(d)/log(10.0);
1365 }
1366
1367 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1368                            int frame_size)
1369 {
1370     AVCodecContext *enc;
1371     int frame_number;
1372     double ti1, bitrate, avg_bitrate;
1373
1374     /* this is executed just the first time do_video_stats is called */
1375     if (!vstats_file) {
1376         vstats_file = fopen(vstats_filename, "w");
1377         if (!vstats_file) {
1378             perror("fopen");
1379             exit_program(1);
1380         }
1381     }
1382
1383     enc = ost->st->codec;
1384     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1385         frame_number = ost->frame_number;
1386         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1387         if (enc->flags&CODEC_FLAG_PSNR)
1388             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1389
1390         fprintf(vstats_file,"f_size= %6d ", frame_size);
1391         /* compute pts value */
1392         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1393         if (ti1 < 0.01)
1394             ti1 = 0.01;
1395
1396         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1397         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1398         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1399             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1400         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1401     }
1402 }
1403
1404 static void print_report(OutputFile *output_files,
1405                          OutputStream *ost_table, int nb_ostreams,
1406                          int is_last_report, int64_t timer_start, int64_t cur_time)
1407 {
1408     char buf[1024];
1409     OutputStream *ost;
1410     AVFormatContext *oc;
1411     int64_t total_size;
1412     AVCodecContext *enc;
1413     int frame_number, vid, i;
1414     double bitrate;
1415     int64_t pts = INT64_MAX;
1416     static int64_t last_time = -1;
1417     static int qp_histogram[52];
1418     int hours, mins, secs, us;
1419
1420     if (!print_stats && !is_last_report)
1421         return;
1422
1423     if (!is_last_report) {
1424         if (last_time == -1) {
1425             last_time = cur_time;
1426             return;
1427         }
1428         if ((cur_time - last_time) < 500000)
1429             return;
1430         last_time = cur_time;
1431     }
1432
1433
1434     oc = output_files[0].ctx;
1435
1436     total_size = avio_size(oc->pb);
1437     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1438         total_size= avio_tell(oc->pb);
1439         if (total_size < 0)
1440             total_size = 0;
1441     }
1442
1443     buf[0] = '\0';
1444     vid = 0;
1445     for(i=0;i<nb_ostreams;i++) {
1446         float q = -1;
1447         ost = &ost_table[i];
1448         enc = ost->st->codec;
1449         if (!ost->stream_copy && enc->coded_frame)
1450             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1451         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1452             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1453         }
1454         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1455             float t = (cur_time-timer_start) / 1000000.0;
1456
1457             frame_number = ost->frame_number;
1458             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1459                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1460             if(is_last_report)
1461                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1462             if(qp_hist){
1463                 int j;
1464                 int qp = lrintf(q);
1465                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1466                     qp_histogram[qp]++;
1467                 for(j=0; j<32; j++)
1468                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1469             }
1470             if (enc->flags&CODEC_FLAG_PSNR){
1471                 int j;
1472                 double error, error_sum=0;
1473                 double scale, scale_sum=0;
1474                 char type[3]= {'Y','U','V'};
1475                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1476                 for(j=0; j<3; j++){
1477                     if(is_last_report){
1478                         error= enc->error[j];
1479                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1480                     }else{
1481                         error= enc->coded_frame->error[j];
1482                         scale= enc->width*enc->height*255.0*255.0;
1483                     }
1484                     if(j) scale/=4;
1485                     error_sum += error;
1486                     scale_sum += scale;
1487                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1488                 }
1489                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1490             }
1491             vid = 1;
1492         }
1493         /* compute min output value */
1494         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1495                                       ost->st->time_base, AV_TIME_BASE_Q));
1496     }
1497
1498     secs = pts / AV_TIME_BASE;
1499     us = pts % AV_TIME_BASE;
1500     mins = secs / 60;
1501     secs %= 60;
1502     hours = mins / 60;
1503     mins %= 60;
1504
1505     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1506
1507     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1508              "size=%8.0fkB time=", total_size / 1024.0);
1509     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1510              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1511              (100 * us) / AV_TIME_BASE);
1512     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1513              "bitrate=%6.1fkbits/s", bitrate);
1514
1515     if (nb_frames_dup || nb_frames_drop)
1516         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1517                 nb_frames_dup, nb_frames_drop);
1518
1519     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1520
1521     fflush(stderr);
1522
1523     if (is_last_report) {
1524         int64_t raw= audio_size + video_size + extra_size;
1525         av_log(NULL, AV_LOG_INFO, "\n");
1526         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1527                video_size/1024.0,
1528                audio_size/1024.0,
1529                extra_size/1024.0,
1530                100.0*(total_size - raw)/raw
1531         );
1532         if(video_size + audio_size + extra_size == 0){
1533             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1534         }
1535     }
1536 }
1537
1538 static void generate_silence(uint8_t *buf, enum AVSampleFormat sample_fmt, size_t size)
1539 {
1540     int fill_char = 0x00;
1541     if (sample_fmt == AV_SAMPLE_FMT_U8)
1542         fill_char = 0x80;
1543     memset(buf, fill_char, size);
1544 }
1545
1546 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1547 {
1548     int i, ret;
1549
1550     for (i = 0; i < nb_ostreams; i++) {
1551         OutputStream   *ost = &ost_table[i];
1552         AVCodecContext *enc = ost->st->codec;
1553         AVFormatContext *os = output_files[ost->file_index].ctx;
1554
1555         if (!ost->encoding_needed)
1556             continue;
1557
1558         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1559             continue;
1560         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1561             continue;
1562
1563         for(;;) {
1564             AVPacket pkt;
1565             int fifo_bytes;
1566             av_init_packet(&pkt);
1567             pkt.stream_index= ost->index;
1568
1569             switch (ost->st->codec->codec_type) {
1570             case AVMEDIA_TYPE_AUDIO:
1571                 fifo_bytes = av_fifo_size(ost->fifo);
1572                 ret = 0;
1573                 /* encode any samples remaining in fifo */
1574                 if (fifo_bytes > 0) {
1575                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1576                     int fs_tmp = enc->frame_size;
1577
1578                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1579                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1580                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1581                     } else { /* pad */
1582                         int frame_bytes = enc->frame_size*osize*enc->channels;
1583                         if (allocated_audio_buf_size < frame_bytes)
1584                             exit_program(1);
1585                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1586                     }
1587
1588                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1589                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1590                                               ost->st->time_base.num, enc->sample_rate);
1591                     enc->frame_size = fs_tmp;
1592                 }
1593                 if (ret <= 0) {
1594                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1595                 }
1596                 if (ret < 0) {
1597                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1598                     exit_program(1);
1599                 }
1600                 audio_size += ret;
1601                 pkt.flags |= AV_PKT_FLAG_KEY;
1602                 break;
1603             case AVMEDIA_TYPE_VIDEO:
1604                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1605                 if (ret < 0) {
1606                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1607                     exit_program(1);
1608                 }
1609                 video_size += ret;
1610                 if(enc->coded_frame && enc->coded_frame->key_frame)
1611                     pkt.flags |= AV_PKT_FLAG_KEY;
1612                 if (ost->logfile && enc->stats_out) {
1613                     fprintf(ost->logfile, "%s", enc->stats_out);
1614                 }
1615                 break;
1616             default:
1617                 ret=-1;
1618             }
1619
1620             if (ret <= 0)
1621                 break;
1622             pkt.data = bit_buffer;
1623             pkt.size = ret;
1624             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1625                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1626             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1627         }
1628     }
1629 }
1630
1631 /*
1632  * Check whether a packet from ist should be written into ost at this time
1633  */
1634 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1635 {
1636     OutputFile *of = &output_files[ost->file_index];
1637     int ist_index  = ist - input_streams;
1638
1639     if (ost->source_index != ist_index)
1640         return 0;
1641
1642     if (of->start_time && ist->pts < of->start_time)
1643         return 0;
1644
1645     if (of->recording_time != INT64_MAX &&
1646         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1647                       (AVRational){1, 1000000}) >= 0) {
1648         ost->is_past_recording_time = 1;
1649         return 0;
1650     }
1651
1652     return 1;
1653 }
1654
1655 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1656 {
1657     OutputFile *of = &output_files[ost->file_index];
1658     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1659     AVPicture pict;
1660     AVPacket opkt;
1661
1662     av_init_packet(&opkt);
1663
1664     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1665         !ost->copy_initial_nonkeyframes)
1666         return;
1667
1668     /* force the input stream PTS */
1669     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1670         audio_size += pkt->size;
1671     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1672         video_size += pkt->size;
1673         ost->sync_opts++;
1674     }
1675
1676     opkt.stream_index = ost->index;
1677     if (pkt->pts != AV_NOPTS_VALUE)
1678         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1679     else
1680         opkt.pts = AV_NOPTS_VALUE;
1681
1682     if (pkt->dts == AV_NOPTS_VALUE)
1683         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1684     else
1685         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1686     opkt.dts -= ost_tb_start_time;
1687
1688     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1689     opkt.flags    = pkt->flags;
1690
1691     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1692     if(   ost->st->codec->codec_id != CODEC_ID_H264
1693        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1694        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1695        ) {
1696         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1697             opkt.destruct = av_destruct_packet;
1698     } else {
1699         opkt.data = pkt->data;
1700         opkt.size = pkt->size;
1701     }
1702     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1703         /* store AVPicture in AVPacket, as expected by the output format */
1704         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1705         opkt.data = (uint8_t *)&pict;
1706         opkt.size = sizeof(AVPicture);
1707         opkt.flags |= AV_PKT_FLAG_KEY;
1708     }
1709
1710     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1711     ost->st->codec->frame_number++;
1712     ost->frame_number++;
1713     av_free_packet(&opkt);
1714 }
1715
1716 static void rate_emu_sleep(InputStream *ist)
1717 {
1718     if (input_files[ist->file_index].rate_emu) {
1719         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1720         int64_t now = av_gettime() - ist->start;
1721         if (pts > now)
1722             usleep(pts - now);
1723     }
1724 }
1725
1726 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1727 {
1728     static unsigned int samples_size = 0;
1729     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1730     uint8_t *decoded_data_buf  = NULL;
1731     int      decoded_data_size = 0;
1732     int i, ret;
1733
1734     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1735         av_free(samples);
1736         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1737         samples      = av_malloc(samples_size);
1738     }
1739     decoded_data_size = samples_size;
1740
1741     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1742                                 pkt);
1743     if (ret < 0)
1744         return ret;
1745     *got_output  = decoded_data_size > 0;
1746
1747     /* Some bug in mpeg audio decoder gives */
1748     /* decoded_data_size < 0, it seems they are overflows */
1749     if (!*got_output) {
1750         /* no audio frame */
1751         return ret;
1752     }
1753
1754     decoded_data_buf = (uint8_t *)samples;
1755     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1756                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1757
1758     // preprocess audio (volume)
1759     if (audio_volume != 256) {
1760         switch (ist->st->codec->sample_fmt) {
1761         case AV_SAMPLE_FMT_U8:
1762         {
1763             uint8_t *volp = samples;
1764             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1765                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1766                 *volp++ = av_clip_uint8(v);
1767             }
1768             break;
1769         }
1770         case AV_SAMPLE_FMT_S16:
1771         {
1772             int16_t *volp = samples;
1773             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1774                 int v = ((*volp) * audio_volume + 128) >> 8;
1775                 *volp++ = av_clip_int16(v);
1776             }
1777             break;
1778         }
1779         case AV_SAMPLE_FMT_S32:
1780         {
1781             int32_t *volp = samples;
1782             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1783                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1784                 *volp++ = av_clipl_int32(v);
1785             }
1786             break;
1787         }
1788         case AV_SAMPLE_FMT_FLT:
1789         {
1790             float *volp = samples;
1791             float scale = audio_volume / 256.f;
1792             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1793                 *volp++ *= scale;
1794             }
1795             break;
1796         }
1797         case AV_SAMPLE_FMT_DBL:
1798         {
1799             double *volp = samples;
1800             double scale = audio_volume / 256.;
1801             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1802                 *volp++ *= scale;
1803             }
1804             break;
1805         }
1806         default:
1807             av_log(NULL, AV_LOG_FATAL,
1808                    "Audio volume adjustment on sample format %s is not supported.\n",
1809                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1810             exit_program(1);
1811         }
1812     }
1813
1814     rate_emu_sleep(ist);
1815
1816     for (i = 0; i < nb_output_streams; i++) {
1817         OutputStream *ost = &output_streams[i];
1818
1819         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1820             continue;
1821         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1822                      decoded_data_buf, decoded_data_size);
1823     }
1824     return ret;
1825 }
1826
1827 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1828 {
1829     AVFrame *decoded_frame, *filtered_frame = NULL;
1830     void *buffer_to_free = NULL;
1831     int i, ret = 0;
1832     float quality = 0;
1833 #if CONFIG_AVFILTER
1834     int frame_available = 1;
1835 #endif
1836
1837     if (!(decoded_frame = avcodec_alloc_frame()))
1838         return AVERROR(ENOMEM);
1839     pkt->pts  = *pkt_pts;
1840     pkt->dts  = *pkt_dts;
1841     *pkt_pts  = AV_NOPTS_VALUE;
1842
1843     if(*pkt_dts != AV_NOPTS_VALUE && ist->st->codec->time_base.num != 0) {
1844         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1845         *pkt_dts += ((int64_t)AV_TIME_BASE *
1846                           ist->st->codec->time_base.num * ticks) /
1847             ist->st->codec->time_base.den;
1848     }else
1849         *pkt_dts = AV_NOPTS_VALUE;
1850
1851     ret = avcodec_decode_video2(ist->st->codec,
1852                                 decoded_frame, got_output, pkt);
1853     if (ret < 0)
1854         goto fail;
1855
1856     quality = same_quant ? decoded_frame->quality : 0;
1857     if (!*got_output) {
1858         /* no picture yet */
1859         av_freep(&decoded_frame);
1860         return ret;
1861     }
1862
1863     if(decoded_frame->best_effort_timestamp != AV_NOPTS_VALUE)
1864         ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1865
1866     if (ist->st->codec->time_base.num != 0) {
1867         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1868                                            ist->st->codec->ticks_per_frame;
1869         ist->next_pts += ((int64_t)AV_TIME_BASE *
1870                           ist->st->codec->time_base.num * ticks) /
1871                           ist->st->codec->time_base.den;
1872     }
1873     pkt->size = 0;
1874
1875     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1876
1877 #if CONFIG_AVFILTER
1878     for(i=0;i<nb_output_streams;i++) {
1879         OutputStream *ost = ost = &output_streams[i];
1880         if(check_output_constraints(ist, ost)){
1881             if (!decoded_frame->sample_aspect_ratio.num)
1882                 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1883             decoded_frame->pts = ist->pts;
1884
1885             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1886         }
1887     }
1888 #endif
1889
1890     rate_emu_sleep(ist);
1891
1892     for (i = 0; i < nb_output_streams; i++) {
1893         OutputStream *ost = &output_streams[i];
1894         int frame_size;
1895
1896         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1897             continue;
1898
1899 #if CONFIG_AVFILTER
1900         if (ost->input_video_filter) {
1901             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1902         }
1903         while (frame_available) {
1904             if (ost->output_video_filter) {
1905                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1906                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1907                     goto cont;
1908                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1909                     ret = AVERROR(ENOMEM);
1910                     goto fail;
1911                 }
1912                 *filtered_frame= *decoded_frame; //for me_threshold
1913                 if (ost->picref) {
1914                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1915                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1916                 }
1917             }
1918             if (ost->picref->video && !ost->frame_aspect_ratio)
1919                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1920 #else
1921             filtered_frame = decoded_frame;
1922 #endif
1923
1924             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1925                          same_quant ? quality : ost->st->codec->global_quality);
1926             if (vstats_filename && frame_size)
1927                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1928 #if CONFIG_AVFILTER
1929             cont:
1930             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1931             avfilter_unref_buffer(ost->picref);
1932         }
1933         av_freep(&filtered_frame);
1934 #endif
1935     }
1936
1937 fail:
1938     av_free(buffer_to_free);
1939     av_freep(&decoded_frame);
1940     return ret;
1941 }
1942
1943 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1944 {
1945     AVSubtitle subtitle;
1946     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1947                                           &subtitle, got_output, pkt);
1948     if (ret < 0)
1949         return ret;
1950     if (!*got_output)
1951         return ret;
1952
1953     rate_emu_sleep(ist);
1954
1955     for (i = 0; i < nb_output_streams; i++) {
1956         OutputStream *ost = &output_streams[i];
1957
1958         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1959             continue;
1960
1961         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1962     }
1963
1964     avsubtitle_free(&subtitle);
1965     return ret;
1966 }
1967
1968 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1969 static int output_packet(InputStream *ist,
1970                          OutputStream *ost_table, int nb_ostreams,
1971                          const AVPacket *pkt)
1972 {
1973     int ret = 0, i;
1974     int got_output;
1975     int64_t pkt_dts = AV_NOPTS_VALUE;
1976     int64_t pkt_pts = AV_NOPTS_VALUE;
1977
1978     AVPacket avpkt;
1979
1980     if (ist->next_pts == AV_NOPTS_VALUE)
1981         ist->next_pts = ist->pts;
1982
1983     if (pkt == NULL) {
1984         /* EOF handling */
1985         av_init_packet(&avpkt);
1986         avpkt.data = NULL;
1987         avpkt.size = 0;
1988         goto handle_eof;
1989     } else {
1990         avpkt = *pkt;
1991     }
1992
1993     if(pkt->dts != AV_NOPTS_VALUE){
1994         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1995             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1996         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1997     }
1998     if(pkt->pts != AV_NOPTS_VALUE)
1999         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2000
2001     //while we have more to decode or while the decoder did output something on EOF
2002     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2003     handle_eof:
2004
2005         ist->pts = ist->next_pts;
2006
2007         if (avpkt.size && avpkt.size != pkt->size) {
2008             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2009                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2010             ist->showed_multi_packet_warning = 1;
2011         }
2012
2013         switch(ist->st->codec->codec_type) {
2014         case AVMEDIA_TYPE_AUDIO:
2015             ret = transcode_audio    (ist, &avpkt, &got_output);
2016             break;
2017         case AVMEDIA_TYPE_VIDEO:
2018             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2019             break;
2020         case AVMEDIA_TYPE_SUBTITLE:
2021             ret = transcode_subtitles(ist, &avpkt, &got_output);
2022             break;
2023         default:
2024             return -1;
2025         }
2026
2027         if (ret < 0)
2028             return ret;
2029         // touch data and size only if not EOF
2030         if (pkt) {
2031             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2032                 ret = avpkt.size;
2033             avpkt.data += ret;
2034             avpkt.size -= ret;
2035         }
2036         if (!got_output) {
2037             continue;
2038         }
2039     }
2040
2041     /* handle stream copy */
2042     if (!ist->decoding_needed) {
2043         rate_emu_sleep(ist);
2044         switch (ist->st->codec->codec_type) {
2045         case AVMEDIA_TYPE_AUDIO:
2046             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2047                              ist->st->codec->sample_rate;
2048             break;
2049         case AVMEDIA_TYPE_VIDEO:
2050             if (ist->st->codec->time_base.num != 0) {
2051                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2052                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2053                                   ist->st->codec->time_base.num * ticks) /
2054                                   ist->st->codec->time_base.den;
2055             }
2056             break;
2057         }
2058     }
2059     for (i = 0; pkt && i < nb_ostreams; i++) {
2060         OutputStream *ost = &ost_table[i];
2061
2062         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2063             continue;
2064
2065         do_streamcopy(ist, ost, pkt);
2066     }
2067
2068     return 0;
2069 }
2070
2071 static void print_sdp(OutputFile *output_files, int n)
2072 {
2073     char sdp[2048];
2074     int i;
2075     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2076
2077     if (!avc)
2078         exit_program(1);
2079     for (i = 0; i < n; i++)
2080         avc[i] = output_files[i].ctx;
2081
2082     av_sdp_create(avc, n, sdp, sizeof(sdp));
2083     printf("SDP:\n%s\n", sdp);
2084     fflush(stdout);
2085     av_freep(&avc);
2086 }
2087
2088 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2089                              char *error, int error_len)
2090 {
2091     InputStream *ist = &input_streams[ist_index];
2092     if (ist->decoding_needed) {
2093         AVCodec *codec = ist->dec;
2094         if (!codec) {
2095             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2096                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2097             return AVERROR(EINVAL);
2098         }
2099         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2100             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2101                     ist->file_index, ist->st->index);
2102             return AVERROR(EINVAL);
2103         }
2104         assert_codec_experimental(ist->st->codec, 0);
2105         assert_avoptions(ist->opts);
2106     }
2107
2108     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;
2109     ist->next_pts = AV_NOPTS_VALUE;
2110     ist->is_start = 1;
2111
2112     return 0;
2113 }
2114
2115 static int transcode_init(OutputFile *output_files, int nb_output_files,
2116                           InputFile  *input_files,  int nb_input_files)
2117 {
2118     int ret = 0, i, j, k;
2119     AVFormatContext *oc;
2120     AVCodecContext *codec, *icodec;
2121     OutputStream *ost;
2122     InputStream *ist;
2123     char error[1024];
2124     int want_sdp = 1;
2125
2126     /* init framerate emulation */
2127     for (i = 0; i < nb_input_files; i++) {
2128         InputFile *ifile = &input_files[i];
2129         if (ifile->rate_emu)
2130             for (j = 0; j < ifile->nb_streams; j++)
2131                 input_streams[j + ifile->ist_index].start = av_gettime();
2132     }
2133
2134     /* output stream init */
2135     for (i = 0; i < nb_output_files; i++) {
2136         oc = output_files[i].ctx;
2137         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2138             av_dump_format(oc, i, oc->filename, 1);
2139             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2140             return AVERROR(EINVAL);
2141         }
2142     }
2143
2144     /* for each output stream, we compute the right encoding parameters */
2145     for (i = 0; i < nb_output_streams; i++) {
2146         ost = &output_streams[i];
2147         oc  = output_files[ost->file_index].ctx;
2148         ist = &input_streams[ost->source_index];
2149
2150         if (ost->attachment_filename)
2151             continue;
2152
2153         codec  = ost->st->codec;
2154         icodec = ist->st->codec;
2155
2156         ost->st->disposition          = ist->st->disposition;
2157         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2158         codec->chroma_sample_location = icodec->chroma_sample_location;
2159
2160         if (ost->stream_copy) {
2161             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2162
2163             if (extra_size > INT_MAX) {
2164                 return AVERROR(EINVAL);
2165             }
2166
2167             /* if stream_copy is selected, no need to decode or encode */
2168             codec->codec_id   = icodec->codec_id;
2169             codec->codec_type = icodec->codec_type;
2170
2171             if (!codec->codec_tag) {
2172                 if (!oc->oformat->codec_tag ||
2173                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2174                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2175                     codec->codec_tag = icodec->codec_tag;
2176             }
2177
2178             codec->bit_rate       = icodec->bit_rate;
2179             codec->rc_max_rate    = icodec->rc_max_rate;
2180             codec->rc_buffer_size = icodec->rc_buffer_size;
2181             codec->extradata      = av_mallocz(extra_size);
2182             if (!codec->extradata) {
2183                 return AVERROR(ENOMEM);
2184             }
2185             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2186             codec->extradata_size= icodec->extradata_size;
2187
2188             codec->time_base = ist->st->time_base;
2189             if(!strcmp(oc->oformat->name, "avi")) {
2190                 if (!copy_tb &&
2191                     av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) &&
2192                     av_q2d(ist->st->time_base) < 1.0/500){
2193                     codec->time_base = icodec->time_base;
2194                     codec->time_base.num *= icodec->ticks_per_frame;
2195                     codec->time_base.den *= 2;
2196                 }
2197             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)) {
2198                 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){
2199                     codec->time_base = icodec->time_base;
2200                     codec->time_base.num *= icodec->ticks_per_frame;
2201                 }
2202             }
2203             av_reduce(&codec->time_base.num, &codec->time_base.den,
2204                         codec->time_base.num, codec->time_base.den, INT_MAX);
2205
2206             switch(codec->codec_type) {
2207             case AVMEDIA_TYPE_AUDIO:
2208                 if(audio_volume != 256) {
2209                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2210                     exit_program(1);
2211                 }
2212                 codec->channel_layout     = icodec->channel_layout;
2213                 codec->sample_rate        = icodec->sample_rate;
2214                 codec->channels           = icodec->channels;
2215                 codec->frame_size         = icodec->frame_size;
2216                 codec->audio_service_type = icodec->audio_service_type;
2217                 codec->block_align        = icodec->block_align;
2218                 break;
2219             case AVMEDIA_TYPE_VIDEO:
2220                 codec->pix_fmt            = icodec->pix_fmt;
2221                 codec->width              = icodec->width;
2222                 codec->height             = icodec->height;
2223                 codec->has_b_frames       = icodec->has_b_frames;
2224                 if (!codec->sample_aspect_ratio.num) {
2225                     codec->sample_aspect_ratio   =
2226                     ost->st->sample_aspect_ratio =
2227                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2228                         ist->st->codec->sample_aspect_ratio.num ?
2229                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2230                 }
2231                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2232                 break;
2233             case AVMEDIA_TYPE_SUBTITLE:
2234                 codec->width  = icodec->width;
2235                 codec->height = icodec->height;
2236                 break;
2237             case AVMEDIA_TYPE_DATA:
2238             case AVMEDIA_TYPE_ATTACHMENT:
2239                 break;
2240             default:
2241                 abort();
2242             }
2243         } else {
2244             if (!ost->enc)
2245                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2246
2247             ist->decoding_needed = 1;
2248             ost->encoding_needed = 1;
2249
2250             switch(codec->codec_type) {
2251             case AVMEDIA_TYPE_AUDIO:
2252                 ost->fifo = av_fifo_alloc(1024);
2253                 if (!ost->fifo) {
2254                     return AVERROR(ENOMEM);
2255                 }
2256                 if (!codec->sample_rate)
2257                     codec->sample_rate = icodec->sample_rate;
2258                 choose_sample_rate(ost->st, ost->enc);
2259                 codec->time_base = (AVRational){1, codec->sample_rate};
2260
2261                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2262                     codec->sample_fmt = icodec->sample_fmt;
2263                 choose_sample_fmt(ost->st, ost->enc);
2264
2265                 if (ost->audio_channels_mapped) {
2266                     /* the requested output channel is set to the number of
2267                      * -map_channel only if no -ac are specified */
2268                     if (!codec->channels) {
2269                         codec->channels       = ost->audio_channels_mapped;
2270                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2271                         if (!codec->channel_layout) {
2272                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2273                             exit_program(1);
2274                         }
2275                     }
2276                     /* fill unused channel mapping with -1 (which means a muted
2277                      * channel in case the number of output channels is bigger
2278                      * than the number of mapped channel) */
2279                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2280                         ost->audio_channels_map[j] = -1;
2281                 } else if (!codec->channels) {
2282                     codec->channels = icodec->channels;
2283                     codec->channel_layout = icodec->channel_layout;
2284                 }
2285                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2286                     codec->channel_layout = 0;
2287
2288                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2289                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2290                                             || codec->channel_layout != icodec->channel_layout;
2291                 icodec->request_channels  = codec->channels;
2292                 ost->resample_sample_fmt  = icodec->sample_fmt;
2293                 ost->resample_sample_rate = icodec->sample_rate;
2294                 ost->resample_channels    = icodec->channels;
2295                 break;
2296             case AVMEDIA_TYPE_VIDEO:
2297                 if (codec->pix_fmt == PIX_FMT_NONE)
2298                     codec->pix_fmt = icodec->pix_fmt;
2299                 choose_pixel_fmt(ost->st, ost->enc);
2300
2301                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2302                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2303                     exit_program(1);
2304                 }
2305
2306                 if (!codec->width || !codec->height) {
2307                     codec->width  = icodec->width;
2308                     codec->height = icodec->height;
2309                 }
2310
2311                 ost->video_resample = codec->width   != icodec->width  ||
2312                                       codec->height  != icodec->height ||
2313                                       codec->pix_fmt != icodec->pix_fmt;
2314                 if (ost->video_resample) {
2315                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2316                 }
2317
2318                 ost->resample_height  = icodec->height;
2319                 ost->resample_width   = icodec->width;
2320                 ost->resample_pix_fmt = icodec->pix_fmt;
2321
2322                 if (!ost->frame_rate.num)
2323                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2324                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2325                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2326                     ost->frame_rate = ost->enc->supported_framerates[idx];
2327                 }
2328                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2329                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2330                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2331                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2332                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2333                 }
2334                 for (j = 0; j < ost->forced_kf_count; j++)
2335                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2336                                                          AV_TIME_BASE_Q,
2337                                                          codec->time_base);
2338
2339 #if CONFIG_AVFILTER
2340                 if (configure_video_filters(ist, ost)) {
2341                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2342                     exit(1);
2343                 }
2344 #endif
2345                 break;
2346             case AVMEDIA_TYPE_SUBTITLE:
2347                 break;
2348             default:
2349                 abort();
2350                 break;
2351             }
2352             /* two pass mode */
2353             if (codec->codec_id != CODEC_ID_H264 &&
2354                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2355                 char logfilename[1024];
2356                 FILE *f;
2357
2358                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2359                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2360                          i);
2361                 if (codec->flags & CODEC_FLAG_PASS2) {
2362                     char  *logbuffer;
2363                     size_t logbuffer_size;
2364                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2365                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2366                                logfilename);
2367                         exit_program(1);
2368                     }
2369                     codec->stats_in = logbuffer;
2370                 }
2371                 if (codec->flags & CODEC_FLAG_PASS1) {
2372                     f = fopen(logfilename, "wb");
2373                     if (!f) {
2374                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2375                                logfilename, strerror(errno));
2376                         exit_program(1);
2377                     }
2378                     ost->logfile = f;
2379                 }
2380             }
2381         }
2382         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2383             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2384             int size        = codec->width * codec->height;
2385             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2386         }
2387     }
2388
2389     if (!bit_buffer)
2390         bit_buffer = av_malloc(bit_buffer_size);
2391     if (!bit_buffer) {
2392         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2393                bit_buffer_size);
2394         return AVERROR(ENOMEM);
2395     }
2396
2397     /* open each encoder */
2398     for (i = 0; i < nb_output_streams; i++) {
2399         ost = &output_streams[i];
2400         if (ost->encoding_needed) {
2401             AVCodec      *codec = ost->enc;
2402             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2403             if (!codec) {
2404                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2405                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2406                 ret = AVERROR(EINVAL);
2407                 goto dump_format;
2408             }
2409             if (dec->subtitle_header) {
2410                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2411                 if (!ost->st->codec->subtitle_header) {
2412                     ret = AVERROR(ENOMEM);
2413                     goto dump_format;
2414                 }
2415                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2416                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2417             }
2418             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2419                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2420                         ost->file_index, ost->index);
2421                 ret = AVERROR(EINVAL);
2422                 goto dump_format;
2423             }
2424             assert_codec_experimental(ost->st->codec, 1);
2425             assert_avoptions(ost->opts);
2426             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2427                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2428                                              " It takes bits/s as argument, not kbits/s\n");
2429             extra_size += ost->st->codec->extradata_size;
2430
2431             if (ost->st->codec->me_threshold)
2432                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2433         }
2434     }
2435
2436     /* init input streams */
2437     for (i = 0; i < nb_input_streams; i++)
2438         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2439             goto dump_format;
2440
2441     /* discard unused programs */
2442     for (i = 0; i < nb_input_files; i++) {
2443         InputFile *ifile = &input_files[i];
2444         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2445             AVProgram *p = ifile->ctx->programs[j];
2446             int discard  = AVDISCARD_ALL;
2447
2448             for (k = 0; k < p->nb_stream_indexes; k++)
2449                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2450                     discard = AVDISCARD_DEFAULT;
2451                     break;
2452                 }
2453             p->discard = discard;
2454         }
2455     }
2456
2457     /* open files and write file headers */
2458     for (i = 0; i < nb_output_files; i++) {
2459         oc = output_files[i].ctx;
2460         oc->interrupt_callback = int_cb;
2461         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2462             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2463             ret = AVERROR(EINVAL);
2464             goto dump_format;
2465         }
2466 //        assert_avoptions(output_files[i].opts);
2467         if (strcmp(oc->oformat->name, "rtp")) {
2468             want_sdp = 0;
2469         }
2470     }
2471
2472  dump_format:
2473     /* dump the file output parameters - cannot be done before in case
2474        of stream copy */
2475     for (i = 0; i < nb_output_files; i++) {
2476         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2477     }
2478
2479     /* dump the stream mapping */
2480     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2481     for (i = 0; i < nb_output_streams; i++) {
2482         ost = &output_streams[i];
2483
2484         if (ost->attachment_filename) {
2485             /* an attached file */
2486             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2487                    ost->attachment_filename, ost->file_index, ost->index);
2488             continue;
2489         }
2490         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2491                input_streams[ost->source_index].file_index,
2492                input_streams[ost->source_index].st->index,
2493                ost->file_index,
2494                ost->index);
2495         if (ost->audio_channels_mapped) {
2496             av_log(NULL, AV_LOG_INFO, " [ch:");
2497             for (j = 0; j < ost->audio_channels_mapped; j++)
2498                 if (ost->audio_channels_map[j] == -1)
2499                     av_log(NULL, AV_LOG_INFO, " M");
2500                 else
2501                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2502             av_log(NULL, AV_LOG_INFO, "]");
2503         }
2504         if (ost->sync_ist != &input_streams[ost->source_index])
2505             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2506                    ost->sync_ist->file_index,
2507                    ost->sync_ist->st->index);
2508         if (ost->stream_copy)
2509             av_log(NULL, AV_LOG_INFO, " (copy)");
2510         else
2511             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2512                    input_streams[ost->source_index].dec->name : "?",
2513                    ost->enc ? ost->enc->name : "?");
2514         av_log(NULL, AV_LOG_INFO, "\n");
2515     }
2516
2517     if (ret) {
2518         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2519         return ret;
2520     }
2521
2522     if (want_sdp) {
2523         print_sdp(output_files, nb_output_files);
2524     }
2525
2526     return 0;
2527 }
2528
2529 /*
2530  * The following code is the main loop of the file converter
2531  */
2532 static int transcode(OutputFile *output_files, int nb_output_files,
2533                      InputFile  *input_files,  int nb_input_files)
2534 {
2535     int ret, i;
2536     AVFormatContext *is, *os;
2537     OutputStream *ost;
2538     InputStream *ist;
2539     uint8_t *no_packet;
2540     int no_packet_count=0;
2541     int64_t timer_start;
2542     int key;
2543
2544     if (!(no_packet = av_mallocz(nb_input_files)))
2545         exit_program(1);
2546
2547     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2548     if (ret < 0)
2549         goto fail;
2550
2551     if (!using_stdin) {
2552         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2553     }
2554
2555     timer_start = av_gettime();
2556
2557     for(; received_sigterm == 0;) {
2558         int file_index, ist_index;
2559         AVPacket pkt;
2560         int64_t ipts_min;
2561         double opts_min;
2562         int64_t cur_time= av_gettime();
2563
2564         ipts_min= INT64_MAX;
2565         opts_min= 1e100;
2566         /* if 'q' pressed, exits */
2567         if (!using_stdin) {
2568             static int64_t last_time;
2569             if (received_nb_signals)
2570                 break;
2571             /* read_key() returns 0 on EOF */
2572             if(cur_time - last_time >= 100000 && !run_as_daemon){
2573                 key =  read_key();
2574                 last_time = cur_time;
2575             }else
2576                 key = -1;
2577             if (key == 'q')
2578                 break;
2579             if (key == '+') av_log_set_level(av_log_get_level()+10);
2580             if (key == '-') av_log_set_level(av_log_get_level()-10);
2581             if (key == 's') qp_hist     ^= 1;
2582             if (key == 'h'){
2583                 if (do_hex_dump){
2584                     do_hex_dump = do_pkt_dump = 0;
2585                 } else if(do_pkt_dump){
2586                     do_hex_dump = 1;
2587                 } else
2588                     do_pkt_dump = 1;
2589                 av_log_set_level(AV_LOG_DEBUG);
2590             }
2591 #if CONFIG_AVFILTER
2592             if (key == 'c' || key == 'C'){
2593                 char buf[4096], target[64], command[256], arg[256] = {0};
2594                 double time;
2595                 int k, n = 0;
2596                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2597                 i = 0;
2598                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2599                     if (k > 0)
2600                         buf[i++] = k;
2601                 buf[i] = 0;
2602                 if (k > 0 &&
2603                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2604                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2605                            target, time, command, arg);
2606                     for (i = 0; i < nb_output_streams; i++) {
2607                         ost = &output_streams[i];
2608                         if (ost->graph) {
2609                             if (time < 0) {
2610                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2611                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2612                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2613                             } else {
2614                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2615                             }
2616                         }
2617                     }
2618                 } else {
2619                     av_log(NULL, AV_LOG_ERROR,
2620                            "Parse error, at least 3 arguments were expected, "
2621                            "only %d given in string '%s'\n", n, buf);
2622                 }
2623             }
2624 #endif
2625             if (key == 'd' || key == 'D'){
2626                 int debug=0;
2627                 if(key == 'D') {
2628                     debug = input_streams[0].st->codec->debug<<1;
2629                     if(!debug) debug = 1;
2630                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2631                         debug += debug;
2632                 }else
2633                     if(scanf("%d", &debug)!=1)
2634                         fprintf(stderr,"error parsing debug value\n");
2635                 for(i=0;i<nb_input_streams;i++) {
2636                     input_streams[i].st->codec->debug = debug;
2637                 }
2638                 for(i=0;i<nb_output_streams;i++) {
2639                     ost = &output_streams[i];
2640                     ost->st->codec->debug = debug;
2641                 }
2642                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2643                 fprintf(stderr,"debug=%d\n", debug);
2644             }
2645             if (key == '?'){
2646                 fprintf(stderr, "key    function\n"
2647                                 "?      show this help\n"
2648                                 "+      increase verbosity\n"
2649                                 "-      decrease verbosity\n"
2650                                 "c      Send command to filtergraph\n"
2651                                 "D      cycle through available debug modes\n"
2652                                 "h      dump packets/hex press to cycle through the 3 states\n"
2653                                 "q      quit\n"
2654                                 "s      Show QP histogram\n"
2655                 );
2656             }
2657         }
2658
2659         /* select the stream that we must read now by looking at the
2660            smallest output pts */
2661         file_index = -1;
2662         for (i = 0; i < nb_output_streams; i++) {
2663             OutputFile *of;
2664             int64_t ipts;
2665             double  opts;
2666             ost = &output_streams[i];
2667             of = &output_files[ost->file_index];
2668             os = output_files[ost->file_index].ctx;
2669             ist = &input_streams[ost->source_index];
2670             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2671                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2672                 continue;
2673             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2674             ipts = ist->pts;
2675             if (!input_files[ist->file_index].eof_reached){
2676                 if(ipts < ipts_min) {
2677                     ipts_min = ipts;
2678                     if(input_sync ) file_index = ist->file_index;
2679                 }
2680                 if(opts < opts_min) {
2681                     opts_min = opts;
2682                     if(!input_sync) file_index = ist->file_index;
2683                 }
2684             }
2685             if (ost->frame_number >= ost->max_frames) {
2686                 int j;
2687                 for (j = 0; j < of->ctx->nb_streams; j++)
2688                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2689                 continue;
2690             }
2691         }
2692         /* if none, if is finished */
2693         if (file_index < 0) {
2694             if(no_packet_count){
2695                 no_packet_count=0;
2696                 memset(no_packet, 0, nb_input_files);
2697                 usleep(10000);
2698                 continue;
2699             }
2700             break;
2701         }
2702
2703         /* read a frame from it and output it in the fifo */
2704         is = input_files[file_index].ctx;
2705         ret= av_read_frame(is, &pkt);
2706         if(ret == AVERROR(EAGAIN)){
2707             no_packet[file_index]=1;
2708             no_packet_count++;
2709             continue;
2710         }
2711         if (ret < 0) {
2712             input_files[file_index].eof_reached = 1;
2713             if (opt_shortest)
2714                 break;
2715             else
2716                 continue;
2717         }
2718
2719         no_packet_count=0;
2720         memset(no_packet, 0, nb_input_files);
2721
2722         if (do_pkt_dump) {
2723             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2724                              is->streams[pkt.stream_index]);
2725         }
2726         /* the following test is needed in case new streams appear
2727            dynamically in stream : we ignore them */
2728         if (pkt.stream_index >= input_files[file_index].nb_streams)
2729             goto discard_packet;
2730         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2731         ist = &input_streams[ist_index];
2732         if (ist->discard)
2733             goto discard_packet;
2734
2735         if (pkt.dts != AV_NOPTS_VALUE)
2736             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2737         if (pkt.pts != AV_NOPTS_VALUE)
2738             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2739
2740         if(pkt.pts != AV_NOPTS_VALUE)
2741             pkt.pts *= ist->ts_scale;
2742         if(pkt.dts != AV_NOPTS_VALUE)
2743             pkt.dts *= ist->ts_scale;
2744
2745 //        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);
2746         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2747             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2748             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2749             int64_t delta= pkt_dts - ist->next_pts;
2750             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2751                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2752                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2753                 pkt_dts+1<ist->pts)&& !copy_ts){
2754                 input_files[ist->file_index].ts_offset -= delta;
2755                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2756                        delta, input_files[ist->file_index].ts_offset);
2757                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2758                 if(pkt.pts != AV_NOPTS_VALUE)
2759                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2760             }
2761         }
2762
2763         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2764         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2765
2766             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2767                    ist->file_index, ist->st->index);
2768             if (exit_on_error)
2769                 exit_program(1);
2770             av_free_packet(&pkt);
2771             continue;
2772         }
2773
2774     discard_packet:
2775         av_free_packet(&pkt);
2776
2777         /* dump report by using the output first video and audio streams */
2778         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2779     }
2780
2781     /* at the end of stream, we must flush the decoder buffers */
2782     for (i = 0; i < nb_input_streams; i++) {
2783         ist = &input_streams[i];
2784         if (ist->decoding_needed) {
2785             output_packet(ist, output_streams, nb_output_streams, NULL);
2786         }
2787     }
2788     flush_encoders(output_streams, nb_output_streams);
2789
2790     term_exit();
2791
2792     /* write the trailer if needed and close file */
2793     for(i=0;i<nb_output_files;i++) {
2794         os = output_files[i].ctx;
2795         av_write_trailer(os);
2796     }
2797
2798     /* dump report by using the first video and audio streams */
2799     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2800
2801     /* close each encoder */
2802     for (i = 0; i < nb_output_streams; i++) {
2803         ost = &output_streams[i];
2804         if (ost->encoding_needed) {
2805             av_freep(&ost->st->codec->stats_in);
2806             avcodec_close(ost->st->codec);
2807         }
2808 #if CONFIG_AVFILTER
2809         avfilter_graph_free(&ost->graph);
2810 #endif
2811     }
2812
2813     /* close each decoder */
2814     for (i = 0; i < nb_input_streams; i++) {
2815         ist = &input_streams[i];
2816         if (ist->decoding_needed) {
2817             avcodec_close(ist->st->codec);
2818         }
2819     }
2820
2821     /* finished ! */
2822     ret = 0;
2823
2824  fail:
2825     av_freep(&bit_buffer);
2826     av_freep(&no_packet);
2827
2828     if (output_streams) {
2829         for (i = 0; i < nb_output_streams; i++) {
2830             ost = &output_streams[i];
2831             if (ost) {
2832                 if (ost->stream_copy)
2833                     av_freep(&ost->st->codec->extradata);
2834                 if (ost->logfile) {
2835                     fclose(ost->logfile);
2836                     ost->logfile = NULL;
2837                 }
2838                 av_fifo_free(ost->fifo); /* works even if fifo is not
2839                                              initialized but set to zero */
2840                 av_freep(&ost->st->codec->subtitle_header);
2841                 av_free(ost->resample_frame.data[0]);
2842                 av_free(ost->forced_kf_pts);
2843                 if (ost->video_resample)
2844                     sws_freeContext(ost->img_resample_ctx);
2845                 swr_free(&ost->swr);
2846                 av_dict_free(&ost->opts);
2847             }
2848         }
2849     }
2850     return ret;
2851 }
2852
2853 static int opt_frame_crop(const char *opt, const char *arg)
2854 {
2855     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2856     return AVERROR(EINVAL);
2857 }
2858
2859 static int opt_pad(const char *opt, const char *arg)
2860 {
2861     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2862     return -1;
2863 }
2864
2865 static double parse_frame_aspect_ratio(const char *arg)
2866 {
2867     int x = 0, y = 0;
2868     double ar = 0;
2869     const char *p;
2870     char *end;
2871
2872     p = strchr(arg, ':');
2873     if (p) {
2874         x = strtol(arg, &end, 10);
2875         if (end == p)
2876             y = strtol(end+1, &end, 10);
2877         if (x > 0 && y > 0)
2878             ar = (double)x / (double)y;
2879     } else
2880         ar = strtod(arg, NULL);
2881
2882     if (!ar) {
2883         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2884         exit_program(1);
2885     }
2886     return ar;
2887 }
2888
2889 static int opt_video_channel(const char *opt, const char *arg)
2890 {
2891     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2892     return opt_default("channel", arg);
2893 }
2894
2895 static int opt_video_standard(const char *opt, const char *arg)
2896 {
2897     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2898     return opt_default("standard", arg);
2899 }
2900
2901 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2902 {
2903     audio_codec_name = arg;
2904     return parse_option(o, "codec:a", arg, options);
2905 }
2906
2907 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2908 {
2909     video_codec_name = arg;
2910     return parse_option(o, "codec:v", arg, options);
2911 }
2912
2913 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2914 {
2915     subtitle_codec_name = arg;
2916     return parse_option(o, "codec:s", arg, options);
2917 }
2918
2919 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2920 {
2921     return parse_option(o, "codec:d", arg, options);
2922 }
2923
2924 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2925 {
2926     StreamMap *m = NULL;
2927     int i, negative = 0, file_idx;
2928     int sync_file_idx = -1, sync_stream_idx;
2929     char *p, *sync;
2930     char *map;
2931
2932     if (*arg == '-') {
2933         negative = 1;
2934         arg++;
2935     }
2936     map = av_strdup(arg);
2937
2938     /* parse sync stream first, just pick first matching stream */
2939     if (sync = strchr(map, ',')) {
2940         *sync = 0;
2941         sync_file_idx = strtol(sync + 1, &sync, 0);
2942         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2943             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2944             exit_program(1);
2945         }
2946         if (*sync)
2947             sync++;
2948         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2949             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2950                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2951                 sync_stream_idx = i;
2952                 break;
2953             }
2954         if (i == input_files[sync_file_idx].nb_streams) {
2955             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2956                                        "match any streams.\n", arg);
2957             exit_program(1);
2958         }
2959     }
2960
2961
2962     file_idx = strtol(map, &p, 0);
2963     if (file_idx >= nb_input_files || file_idx < 0) {
2964         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2965         exit_program(1);
2966     }
2967     if (negative)
2968         /* disable some already defined maps */
2969         for (i = 0; i < o->nb_stream_maps; i++) {
2970             m = &o->stream_maps[i];
2971             if (file_idx == m->file_index &&
2972                 check_stream_specifier(input_files[m->file_index].ctx,
2973                                        input_files[m->file_index].ctx->streams[m->stream_index],
2974                                        *p == ':' ? p + 1 : p) > 0)
2975                 m->disabled = 1;
2976         }
2977     else
2978         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2979             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2980                         *p == ':' ? p + 1 : p) <= 0)
2981                 continue;
2982             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2983                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2984             m = &o->stream_maps[o->nb_stream_maps - 1];
2985
2986             m->file_index   = file_idx;
2987             m->stream_index = i;
2988
2989             if (sync_file_idx >= 0) {
2990                 m->sync_file_index   = sync_file_idx;
2991                 m->sync_stream_index = sync_stream_idx;
2992             } else {
2993                 m->sync_file_index   = file_idx;
2994                 m->sync_stream_index = i;
2995             }
2996         }
2997
2998     if (!m) {
2999         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3000         exit_program(1);
3001     }
3002
3003     av_freep(&map);
3004     return 0;
3005 }
3006
3007 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3008 {
3009     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3010                                 &o->nb_attachments, o->nb_attachments + 1);
3011     o->attachments[o->nb_attachments - 1] = arg;
3012     return 0;
3013 }
3014
3015 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3016 {
3017     int n;
3018     AVStream *st;
3019     AudioChannelMap *m;
3020
3021     o->audio_channel_maps =
3022         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3023                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3024     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3025
3026     /* muted channel syntax */
3027     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3028     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3029         m->file_idx = m->stream_idx = -1;
3030         if (n == 1)
3031             m->ofile_idx = m->ostream_idx = -1;
3032         return 0;
3033     }
3034
3035     /* normal syntax */
3036     n = sscanf(arg, "%d.%d.%d:%d.%d",
3037                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3038                &m->ofile_idx, &m->ostream_idx);
3039
3040     if (n != 3 && n != 5) {
3041         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3042                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3043         exit_program(1);
3044     }
3045
3046     if (n != 5) // only file.stream.channel specified
3047         m->ofile_idx = m->ostream_idx = -1;
3048
3049     /* check input */
3050     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3051         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3052                m->file_idx);
3053         exit_program(1);
3054     }
3055     if (m->stream_idx < 0 ||
3056         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3057         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3058                m->file_idx, m->stream_idx);
3059         exit_program(1);
3060     }
3061     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3062     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3063         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3064                m->file_idx, m->stream_idx);
3065         exit_program(1);
3066     }
3067     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3068         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3069                m->file_idx, m->stream_idx, m->channel_idx);
3070         exit_program(1);
3071     }
3072     return 0;
3073 }
3074
3075 static void parse_meta_type(char *arg, char *type, int *index)
3076 {
3077     if (*arg) {
3078         *type = *arg;
3079         switch (*arg) {
3080         case 'g':
3081             break;
3082         case 's':
3083         case 'c':
3084         case 'p':
3085             if (*(++arg) == ':')
3086                 *index = strtol(++arg, NULL, 0);
3087             break;
3088         default:
3089             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3090             exit_program(1);
3091         }
3092     } else
3093         *type = 'g';
3094 }
3095
3096 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3097 {
3098     MetadataMap *m, *m1;
3099     char *p;
3100
3101     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3102                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3103
3104     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3105     m->file = strtol(arg, &p, 0);
3106     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3107
3108     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3109     if (p = strchr(opt, ':'))
3110         parse_meta_type(p + 1, &m1->type, &m1->index);
3111     else
3112         m1->type = 'g';
3113
3114     if (m->type == 'g' || m1->type == 'g')
3115         o->metadata_global_manual = 1;
3116     if (m->type == 's' || m1->type == 's')
3117         o->metadata_streams_manual = 1;
3118     if (m->type == 'c' || m1->type == 'c')
3119         o->metadata_chapters_manual = 1;
3120
3121     return 0;
3122 }
3123
3124 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3125 {
3126     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3127                     "Use -map_metadata instead.\n");
3128     return opt_map_metadata(o, opt, arg);
3129 }
3130
3131 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3132 {
3133     char buf[128];
3134     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3135     struct tm time = *gmtime((time_t*)&recording_timestamp);
3136     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3137     parse_option(o, "metadata", buf, options);
3138
3139     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3140                                  "tag instead.\n", opt);
3141     return 0;
3142 }
3143
3144 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3145 {
3146     const char *codec_string = encoder ? "encoder" : "decoder";
3147     AVCodec *codec;
3148
3149     codec = encoder ?
3150         avcodec_find_encoder_by_name(name) :
3151         avcodec_find_decoder_by_name(name);
3152     if(!codec) {
3153         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3154         exit_program(1);
3155     }
3156     if(codec->type != type) {
3157         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3158         exit_program(1);
3159     }
3160     return codec;
3161 }
3162
3163 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3164 {
3165     char *codec_name = NULL;
3166
3167     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3168     if (codec_name) {
3169         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3170         st->codec->codec_id = codec->id;
3171         return codec;
3172     } else
3173         return avcodec_find_decoder(st->codec->codec_id);
3174 }
3175
3176 /**
3177  * Add all the streams from the given input file to the global
3178  * list of input streams.
3179  */
3180 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3181 {
3182     int i, rfps, rfps_base;
3183     char *next, *codec_tag = NULL;
3184
3185     for (i = 0; i < ic->nb_streams; i++) {
3186         AVStream *st = ic->streams[i];
3187         AVCodecContext *dec = st->codec;
3188         InputStream *ist;
3189
3190         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3191         ist = &input_streams[nb_input_streams - 1];
3192         ist->st = st;
3193         ist->file_index = nb_input_files;
3194         ist->discard = 1;
3195         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3196
3197         ist->ts_scale = 1.0;
3198         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3199
3200         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3201         if (codec_tag) {
3202             uint32_t tag = strtol(codec_tag, &next, 0);
3203             if (*next)
3204                 tag = AV_RL32(codec_tag);
3205             st->codec->codec_tag = tag;
3206         }
3207
3208         ist->dec = choose_decoder(o, ic, st);
3209
3210         switch (dec->codec_type) {
3211         case AVMEDIA_TYPE_AUDIO:
3212             if(!ist->dec)
3213                 ist->dec = avcodec_find_decoder(dec->codec_id);
3214             if(o->audio_disable)
3215                 st->discard= AVDISCARD_ALL;
3216             break;
3217         case AVMEDIA_TYPE_VIDEO:
3218             if(!ist->dec)
3219                 ist->dec = avcodec_find_decoder(dec->codec_id);
3220             rfps      = ic->streams[i]->r_frame_rate.num;
3221             rfps_base = ic->streams[i]->r_frame_rate.den;
3222             if (dec->lowres) {
3223                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3224             }
3225
3226             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3227
3228                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3229                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3230                        (float)rfps / rfps_base, rfps, rfps_base);
3231             }
3232
3233             if (o->video_disable)
3234                 st->discard= AVDISCARD_ALL;
3235             else if(video_discard)
3236                 st->discard= video_discard;
3237             break;
3238         case AVMEDIA_TYPE_DATA:
3239             break;
3240         case AVMEDIA_TYPE_SUBTITLE:
3241             if(!ist->dec)
3242                 ist->dec = avcodec_find_decoder(dec->codec_id);
3243             if(o->subtitle_disable)
3244                 st->discard = AVDISCARD_ALL;
3245             break;
3246         case AVMEDIA_TYPE_ATTACHMENT:
3247         case AVMEDIA_TYPE_UNKNOWN:
3248             break;
3249         default:
3250             abort();
3251         }
3252     }
3253 }
3254
3255 static void assert_file_overwrite(const char *filename)
3256 {
3257     if ((!file_overwrite || no_file_overwrite) &&
3258         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3259          av_strstart(filename, "file:", NULL))) {
3260         if (avio_check(filename, 0) == 0) {
3261             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3262                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3263                 fflush(stderr);
3264                 term_exit();
3265                 if (!read_yesno()) {
3266                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3267                     exit_program(1);
3268                 }
3269                 term_init();
3270             }
3271             else {
3272                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3273                 exit_program(1);
3274             }
3275         }
3276     }
3277 }
3278
3279 static void dump_attachment(AVStream *st, const char *filename)
3280 {
3281     int ret;
3282     AVIOContext *out = NULL;
3283     AVDictionaryEntry *e;
3284
3285     if (!st->codec->extradata_size) {
3286         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3287                nb_input_files - 1, st->index);
3288         return;
3289     }
3290     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3291         filename = e->value;
3292     if (!*filename) {
3293         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3294                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3295         exit_program(1);
3296     }
3297
3298     assert_file_overwrite(filename);
3299
3300     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3301         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3302                filename);
3303         exit_program(1);
3304     }
3305
3306     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3307     avio_flush(out);
3308     avio_close(out);
3309 }
3310
3311 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3312 {
3313     AVFormatContext *ic;
3314     AVInputFormat *file_iformat = NULL;
3315     int err, i, ret;
3316     int64_t timestamp;
3317     uint8_t buf[128];
3318     AVDictionary **opts;
3319     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3320
3321     if (o->format) {
3322         if (!(file_iformat = av_find_input_format(o->format))) {
3323             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3324             exit_program(1);
3325         }
3326     }
3327
3328     if (!strcmp(filename, "-"))
3329         filename = "pipe:";
3330
3331     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3332                     !strcmp(filename, "/dev/stdin");
3333
3334     /* get default parameters from command line */
3335     ic = avformat_alloc_context();
3336     if (!ic) {
3337         print_error(filename, AVERROR(ENOMEM));
3338         exit_program(1);
3339     }
3340     if (o->nb_audio_sample_rate) {
3341         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3342         av_dict_set(&format_opts, "sample_rate", buf, 0);
3343     }
3344     if (o->nb_audio_channels) {
3345         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3346         av_dict_set(&format_opts, "channels", buf, 0);
3347     }
3348     if (o->nb_frame_rates) {
3349         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3350     }
3351     if (o->nb_frame_sizes) {
3352         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3353     }
3354     if (o->nb_frame_pix_fmts)
3355         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3356
3357     ic->video_codec_id   = video_codec_name ?
3358         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3359     ic->audio_codec_id   = audio_codec_name ?
3360         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3361     ic->subtitle_codec_id= subtitle_codec_name ?
3362         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3363     ic->flags |= AVFMT_FLAG_NONBLOCK;
3364     ic->interrupt_callback = int_cb;
3365
3366     if (loop_input) {
3367         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3368         ic->loop_input = loop_input;
3369     }
3370
3371     /* open the input file with generic libav function */
3372     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3373     if (err < 0) {
3374         print_error(filename, err);
3375         exit_program(1);
3376     }
3377     assert_avoptions(format_opts);
3378
3379     /* apply forced codec ids */
3380     for (i = 0; i < ic->nb_streams; i++)
3381         choose_decoder(o, ic, ic->streams[i]);
3382
3383     /* Set AVCodecContext options for avformat_find_stream_info */
3384     opts = setup_find_stream_info_opts(ic, codec_opts);
3385     orig_nb_streams = ic->nb_streams;
3386
3387     /* If not enough info to get the stream parameters, we decode the
3388        first frames to get it. (used in mpeg case for example) */
3389     ret = avformat_find_stream_info(ic, opts);
3390     if (ret < 0) {
3391         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3392         av_close_input_file(ic);
3393         exit_program(1);
3394     }
3395
3396     timestamp = o->start_time;
3397     /* add the stream start time */
3398     if (ic->start_time != AV_NOPTS_VALUE)
3399         timestamp += ic->start_time;
3400
3401     /* if seeking requested, we execute it */
3402     if (o->start_time != 0) {
3403         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3404         if (ret < 0) {
3405             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3406                    filename, (double)timestamp / AV_TIME_BASE);
3407         }
3408     }
3409
3410     /* update the current parameters so that they match the one of the input stream */
3411     add_input_streams(o, ic);
3412
3413     /* dump the file content */
3414     av_dump_format(ic, nb_input_files, filename, 0);
3415
3416     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3417     input_files[nb_input_files - 1].ctx        = ic;
3418     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3419     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3420     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3421     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3422
3423     for (i = 0; i < o->nb_dump_attachment; i++) {
3424         int j;
3425
3426         for (j = 0; j < ic->nb_streams; j++) {
3427             AVStream *st = ic->streams[j];
3428
3429             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3430                 dump_attachment(st, o->dump_attachment[i].u.str);
3431         }
3432     }
3433
3434     for (i = 0; i < orig_nb_streams; i++)
3435         av_dict_free(&opts[i]);
3436     av_freep(&opts);
3437
3438     reset_options(o, 1);
3439     return 0;
3440 }
3441
3442 static void parse_forced_key_frames(char *kf, OutputStream *ost)
3443 {
3444     char *p;
3445     int n = 1, i;
3446
3447     for (p = kf; *p; p++)
3448         if (*p == ',')
3449             n++;
3450     ost->forced_kf_count = n;
3451     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3452     if (!ost->forced_kf_pts) {
3453         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3454         exit_program(1);
3455     }
3456     for (i = 0; i < n; i++) {
3457         p = i ? strchr(p, ',') + 1 : kf;
3458         ost->forced_kf_pts[i] = parse_time_or_die("force_key_frames", p, 1);
3459     }
3460 }
3461
3462 static uint8_t *get_line(AVIOContext *s)
3463 {
3464     AVIOContext *line;
3465     uint8_t *buf;
3466     char c;
3467
3468     if (avio_open_dyn_buf(&line) < 0) {
3469         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3470         exit_program(1);
3471     }
3472
3473     while ((c = avio_r8(s)) && c != '\n')
3474         avio_w8(line, c);
3475     avio_w8(line, 0);
3476     avio_close_dyn_buf(line, &buf);
3477
3478     return buf;
3479 }
3480
3481 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3482 {
3483     int i, ret = 1;
3484     char filename[1000];
3485     const char *base[3] = { getenv("AVCONV_DATADIR"),
3486                             getenv("HOME"),
3487                             AVCONV_DATADIR,
3488                             };
3489
3490     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3491         if (!base[i])
3492             continue;
3493         if (codec_name) {
3494             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3495                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3496             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3497         }
3498         if (ret) {
3499             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3500                      i != 1 ? "" : "/.avconv", preset_name);
3501             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3502         }
3503     }
3504     return ret;
3505 }
3506
3507 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3508 {
3509     char *codec_name = NULL;
3510
3511     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3512     if (!codec_name) {
3513         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3514                                                   NULL, ost->st->codec->codec_type);
3515         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3516     } else if (!strcmp(codec_name, "copy"))
3517         ost->stream_copy = 1;
3518     else {
3519         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3520         ost->st->codec->codec_id = ost->enc->id;
3521     }
3522 }
3523
3524 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3525 {
3526     OutputStream *ost;
3527     AVStream *st = avformat_new_stream(oc, NULL);
3528     int idx      = oc->nb_streams - 1, ret = 0;
3529     char *bsf = NULL, *next, *codec_tag = NULL;
3530     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3531     double qscale = -1;
3532     char *buf = NULL, *arg = NULL, *preset = NULL;
3533     AVIOContext *s = NULL;
3534
3535     if (!st) {
3536         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3537         exit_program(1);
3538     }
3539
3540     if (oc->nb_streams - 1 < o->nb_streamid_map)
3541         st->id = o->streamid_map[oc->nb_streams - 1];
3542
3543     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3544                                 nb_output_streams + 1);
3545     ost = &output_streams[nb_output_streams - 1];
3546     ost->file_index = nb_output_files;
3547     ost->index = idx;
3548     ost->st    = st;
3549     st->codec->codec_type = type;
3550     choose_encoder(o, oc, ost);
3551     if (ost->enc) {
3552         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3553     }
3554
3555     avcodec_get_context_defaults3(st->codec, ost->enc);
3556     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3557
3558     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3559     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3560         do  {
3561             buf = get_line(s);
3562             if (!buf[0] || buf[0] == '#') {
3563                 av_free(buf);
3564                 continue;
3565             }
3566             if (!(arg = strchr(buf, '='))) {
3567                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3568                 exit_program(1);
3569             }
3570             *arg++ = 0;
3571             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3572             av_free(buf);
3573         } while (!s->eof_reached);
3574         avio_close(s);
3575     }
3576     if (ret) {
3577         av_log(NULL, AV_LOG_FATAL,
3578                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3579                preset, ost->file_index, ost->index);
3580         exit_program(1);
3581     }
3582
3583     ost->max_frames = INT64_MAX;
3584     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3585
3586     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3587     while (bsf) {
3588         if (next = strchr(bsf, ','))
3589             *next++ = 0;
3590         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3591             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3592             exit_program(1);
3593         }
3594         if (bsfc_prev)
3595             bsfc_prev->next = bsfc;
3596         else
3597             ost->bitstream_filters = bsfc;
3598
3599         bsfc_prev = bsfc;
3600         bsf       = next;
3601     }
3602
3603     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3604     if (codec_tag) {
3605         uint32_t tag = strtol(codec_tag, &next, 0);
3606         if (*next)
3607             tag = AV_RL32(codec_tag);
3608         st->codec->codec_tag = tag;
3609     }
3610
3611     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3612     if (qscale >= 0 || same_quant) {
3613         st->codec->flags |= CODEC_FLAG_QSCALE;
3614         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3615     }
3616
3617     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3618         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3619
3620     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3621     return ost;
3622 }
3623
3624 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3625 {
3626     int i;
3627     const char *p = str;
3628     for(i = 0;; i++) {
3629         dest[i] = atoi(p);
3630         if(i == 63)
3631             break;
3632         p = strchr(p, ',');
3633         if(!p) {
3634             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3635             exit_program(1);
3636         }
3637         p++;
3638     }
3639 }
3640
3641 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3642 {
3643     AVStream *st;
3644     OutputStream *ost;
3645     AVCodecContext *video_enc;
3646
3647     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3648     st  = ost->st;
3649     video_enc = st->codec;
3650
3651     if (!ost->stream_copy) {
3652         const char *p = NULL;
3653         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3654         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3655         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3656         int i;
3657
3658         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3659         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3660             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3661             exit_program(1);
3662         }
3663
3664         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3665         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3666             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3667             exit_program(1);
3668         }
3669
3670         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3671         if (frame_aspect_ratio)
3672             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3673
3674         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3675         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);