ffmpeg: Avoid directly accessing AVFrame fields that differ between forks.
[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= -1;
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         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
768         enum PixelFormat best= PIX_FMT_NONE;
769         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
770             if(st->codec->codec_id==CODEC_ID_MJPEG){
771                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
772             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
773                 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};
774             }
775         }
776         for (; *p != PIX_FMT_NONE; p++) {
777             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
778             if(*p == st->codec->pix_fmt)
779                 break;
780         }
781         if (*p == PIX_FMT_NONE) {
782             if(st->codec->pix_fmt != PIX_FMT_NONE)
783                 av_log(NULL, AV_LOG_WARNING,
784                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
785                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
786                         codec->name,
787                         av_pix_fmt_descriptors[best].name);
788             st->codec->pix_fmt = best;
789         }
790     }
791 }
792
793 static double get_sync_ipts(const OutputStream *ost)
794 {
795     const InputStream *ist = ost->sync_ist;
796     OutputFile *of = &output_files[ost->file_index];
797     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
798 }
799
800 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
801 {
802     int ret;
803
804     while(bsfc){
805         AVPacket new_pkt= *pkt;
806         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
807                                           &new_pkt.data, &new_pkt.size,
808                                           pkt->data, pkt->size,
809                                           pkt->flags & AV_PKT_FLAG_KEY);
810         if(a>0){
811             av_free_packet(pkt);
812             new_pkt.destruct= av_destruct_packet;
813         } else if(a<0){
814             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
815                    bsfc->filter->name, pkt->stream_index,
816                    avctx->codec ? avctx->codec->name : "copy");
817             print_error("", a);
818             if (exit_on_error)
819                 exit_program(1);
820         }
821         *pkt= new_pkt;
822
823         bsfc= bsfc->next;
824     }
825
826     ret= av_interleaved_write_frame(s, pkt);
827     if(ret < 0){
828         print_error("av_interleaved_write_frame()", ret);
829         exit_program(1);
830     }
831 }
832
833 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
834 {
835     int fill_char = 0x00;
836     if (sample_fmt == AV_SAMPLE_FMT_U8)
837         fill_char = 0x80;
838     memset(buf, fill_char, size);
839 }
840
841 static void do_audio_out(AVFormatContext *s,
842                          OutputStream *ost,
843                          InputStream *ist,
844                          unsigned char *buf, int size)
845 {
846     uint8_t *buftmp;
847     int64_t audio_out_size, audio_buf_size;
848     int64_t allocated_for_size= size;
849
850     int size_out, frame_bytes, ret, resample_changed;
851     AVCodecContext *enc= ost->st->codec;
852     AVCodecContext *dec= ist->st->codec;
853     int osize = av_get_bytes_per_sample(enc->sample_fmt);
854     int isize = av_get_bytes_per_sample(dec->sample_fmt);
855     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
856
857 need_realloc:
858     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
859     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
860     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
861     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
862     audio_buf_size*= osize*enc->channels;
863
864     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
865     if(coded_bps > 8*osize)
866         audio_out_size= audio_out_size * coded_bps / (8*osize);
867     audio_out_size += FF_MIN_BUFFER_SIZE;
868
869     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
870         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
871         exit_program(1);
872     }
873
874     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
875     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
876     if (!audio_buf || !audio_out){
877         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
878         exit_program(1);
879     }
880
881     if (enc->channels != dec->channels
882      || enc->sample_fmt != dec->sample_fmt
883      || enc->sample_rate!= dec->sample_rate
884     )
885         ost->audio_resample = 1;
886
887     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
888                        ost->resample_channels    != dec->channels   ||
889                        ost->resample_sample_rate != dec->sample_rate;
890
891     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
892         if (resample_changed) {
893             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",
894                    ist->file_index, ist->st->index,
895                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
896                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
897             ost->resample_sample_fmt  = dec->sample_fmt;
898             ost->resample_channels    = dec->channels;
899             ost->resample_sample_rate = dec->sample_rate;
900             swr_free(&ost->swr);
901         }
902         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
903         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
904             ost->resample_sample_fmt  == enc->sample_fmt &&
905             ost->resample_channels    == enc->channels   &&
906             ost->resample_sample_rate == enc->sample_rate) {
907             //ost->swr = NULL;
908             ost->audio_resample = 0;
909         } else {
910             ost->swr = swr_alloc_set_opts(ost->swr,
911                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
912                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
913                                           0, NULL);
914             if (ost->audio_channels_mapped)
915                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
916             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
917             if (ost->audio_channels_mapped) {
918                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
919                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
920             }
921             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
922             av_opt_set_int(ost->swr, "och", enc->channels, 0);
923             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
924             if(ost->swr && swr_init(ost->swr) < 0){
925                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
926                 swr_free(&ost->swr);
927             }
928
929             if (!ost->swr) {
930                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
931                         dec->channels, dec->sample_rate,
932                         enc->channels, enc->sample_rate);
933                 exit_program(1);
934             }
935         }
936     }
937
938     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
939
940     if(audio_sync_method){
941         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
942                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
943         int idelta = delta * dec->sample_rate / enc->sample_rate;
944         int byte_delta = idelta * isize * dec->channels;
945
946         //FIXME resample delay
947         if(fabs(delta) > 50){
948             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
949                 if(byte_delta < 0){
950                     byte_delta= FFMAX(byte_delta, -size);
951                     size += byte_delta;
952                     buf  -= byte_delta;
953                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
954                            -byte_delta / (isize * dec->channels));
955                     if(!size)
956                         return;
957                     ist->is_start=0;
958                 }else{
959                     input_tmp= av_realloc(input_tmp, byte_delta + size);
960
961                     if(byte_delta > allocated_for_size - size){
962                         allocated_for_size= byte_delta + (int64_t)size;
963                         goto need_realloc;
964                     }
965                     ist->is_start=0;
966
967                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
968                     memcpy(input_tmp + byte_delta, buf, size);
969                     buf= input_tmp;
970                     size += byte_delta;
971                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
972                 }
973             }else if(audio_sync_method>1){
974                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
975                 av_assert0(ost->audio_resample);
976                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
977                        delta, comp, enc->sample_rate);
978 //                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));
979                 swr_compensate(ost->swr, comp, enc->sample_rate);
980             }
981         }
982     }else
983         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
984                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
985
986     if (ost->audio_resample) {
987         buftmp = audio_buf;
988         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
989                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
990         size_out = size_out * enc->channels * osize;
991     } else {
992         buftmp = buf;
993         size_out = size;
994     }
995
996     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
997
998     /* now encode as many frames as possible */
999     if (enc->frame_size > 1) {
1000         /* output resampled raw samples */
1001         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1002             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1003             exit_program(1);
1004         }
1005         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1006
1007         frame_bytes = enc->frame_size * osize * enc->channels;
1008
1009         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1010             AVPacket pkt;
1011             av_init_packet(&pkt);
1012
1013             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1014
1015             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1016
1017             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1018                                        (short *)audio_buf);
1019             if (ret < 0) {
1020                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1021                 exit_program(1);
1022             }
1023             audio_size += ret;
1024             pkt.stream_index= ost->index;
1025             pkt.data= audio_out;
1026             pkt.size= ret;
1027             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1028                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1029             pkt.flags |= AV_PKT_FLAG_KEY;
1030             write_frame(s, &pkt, enc, ost->bitstream_filters);
1031
1032             ost->sync_opts += enc->frame_size;
1033         }
1034     } else {
1035         AVPacket pkt;
1036         av_init_packet(&pkt);
1037
1038         ost->sync_opts += size_out / (osize * enc->channels);
1039
1040         /* output a pcm frame */
1041         /* determine the size of the coded buffer */
1042         size_out /= osize;
1043         if (coded_bps)
1044             size_out = size_out*coded_bps/8;
1045
1046         if(size_out > audio_out_size){
1047             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1048             exit_program(1);
1049         }
1050
1051         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1052         ret = avcodec_encode_audio(enc, audio_out, size_out,
1053                                    (short *)buftmp);
1054         if (ret < 0) {
1055             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1056             exit_program(1);
1057         }
1058         audio_size += ret;
1059         pkt.stream_index= ost->index;
1060         pkt.data= audio_out;
1061         pkt.size= ret;
1062         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1063             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1064         pkt.flags |= AV_PKT_FLAG_KEY;
1065         write_frame(s, &pkt, enc, ost->bitstream_filters);
1066     }
1067 }
1068
1069 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1070 {
1071     AVCodecContext *dec;
1072     AVPicture *picture2;
1073     AVPicture picture_tmp;
1074     uint8_t *buf = 0;
1075
1076     dec = ist->st->codec;
1077
1078     /* deinterlace : must be done before any resize */
1079     if (do_deinterlace) {
1080         int size;
1081
1082         /* create temporary picture */
1083         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1084         buf = av_malloc(size);
1085         if (!buf)
1086             return;
1087
1088         picture2 = &picture_tmp;
1089         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1090
1091         if(avpicture_deinterlace(picture2, picture,
1092                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1093             /* if error, do not deinterlace */
1094             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1095             av_free(buf);
1096             buf = NULL;
1097             picture2 = picture;
1098         }
1099     } else {
1100         picture2 = picture;
1101     }
1102
1103     if (picture != picture2)
1104         *picture = *picture2;
1105     *bufp = buf;
1106 }
1107
1108 static void do_subtitle_out(AVFormatContext *s,
1109                             OutputStream *ost,
1110                             InputStream *ist,
1111                             AVSubtitle *sub,
1112                             int64_t pts)
1113 {
1114     static uint8_t *subtitle_out = NULL;
1115     int subtitle_out_max_size = 1024 * 1024;
1116     int subtitle_out_size, nb, i;
1117     AVCodecContext *enc;
1118     AVPacket pkt;
1119
1120     if (pts == AV_NOPTS_VALUE) {
1121         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1122         if (exit_on_error)
1123             exit_program(1);
1124         return;
1125     }
1126
1127     enc = ost->st->codec;
1128
1129     if (!subtitle_out) {
1130         subtitle_out = av_malloc(subtitle_out_max_size);
1131     }
1132
1133     /* Note: DVB subtitle need one packet to draw them and one other
1134        packet to clear them */
1135     /* XXX: signal it in the codec context ? */
1136     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1137         nb = 2;
1138     else
1139         nb = 1;
1140
1141     for(i = 0; i < nb; i++) {
1142         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1143         // start_display_time is required to be 0
1144         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1145         sub->end_display_time -= sub->start_display_time;
1146         sub->start_display_time = 0;
1147         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1148                                                     subtitle_out_max_size, sub);
1149         if (subtitle_out_size < 0) {
1150             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1151             exit_program(1);
1152         }
1153
1154         av_init_packet(&pkt);
1155         pkt.stream_index = ost->index;
1156         pkt.data = subtitle_out;
1157         pkt.size = subtitle_out_size;
1158         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1159         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1160             /* XXX: the pts correction is handled here. Maybe handling
1161                it in the codec would be better */
1162             if (i == 0)
1163                 pkt.pts += 90 * sub->start_display_time;
1164             else
1165                 pkt.pts += 90 * sub->end_display_time;
1166         }
1167         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1168     }
1169 }
1170
1171 static int bit_buffer_size= 1024*256;
1172 static uint8_t *bit_buffer= NULL;
1173
1174 static void do_video_resample(OutputStream *ost,
1175                               InputStream *ist,
1176                               AVFrame *in_picture,
1177                               AVFrame **out_picture)
1178 {
1179 #if CONFIG_AVFILTER
1180     *out_picture = in_picture;
1181 #else
1182     AVCodecContext *dec = ist->st->codec;
1183     AVCodecContext *enc = ost->st->codec;
1184     int resample_changed = ost->resample_width   != dec->width  ||
1185                            ost->resample_height  != dec->height ||
1186                            ost->resample_pix_fmt != dec->pix_fmt;
1187
1188     *out_picture = in_picture;
1189     if (resample_changed) {
1190         av_log(NULL, AV_LOG_INFO,
1191                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1192                ist->file_index, ist->st->index,
1193                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1194                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1195         ost->resample_width   = dec->width;
1196         ost->resample_height  = dec->height;
1197         ost->resample_pix_fmt = dec->pix_fmt;
1198     }
1199
1200     ost->video_resample = dec->width   != enc->width  ||
1201                           dec->height  != enc->height ||
1202                           dec->pix_fmt != enc->pix_fmt;
1203
1204     if (ost->video_resample) {
1205         *out_picture = &ost->resample_frame;
1206         if (!ost->img_resample_ctx || resample_changed) {
1207             /* initialize the destination picture */
1208             if (!ost->resample_frame.data[0]) {
1209                 avcodec_get_frame_defaults(&ost->resample_frame);
1210                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1211                                     enc->width, enc->height)) {
1212                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1213                     exit_program(1);
1214                 }
1215             }
1216             /* initialize a new scaler context */
1217             sws_freeContext(ost->img_resample_ctx);
1218             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1219                                                    enc->width, enc->height, enc->pix_fmt,
1220                                                    ost->sws_flags, NULL, NULL, NULL);
1221             if (ost->img_resample_ctx == NULL) {
1222                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1223                 exit_program(1);
1224             }
1225         }
1226         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1227               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1228     }
1229 #endif
1230 }
1231
1232
1233 static void do_video_out(AVFormatContext *s,
1234                          OutputStream *ost,
1235                          InputStream *ist,
1236                          AVFrame *in_picture,
1237                          int *frame_size, float quality)
1238 {
1239     int nb_frames, i, ret, format_video_sync;
1240     AVFrame *final_picture;
1241     AVCodecContext *enc;
1242     double sync_ipts;
1243     double duration = 0;
1244
1245     enc = ost->st->codec;
1246
1247     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1248         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1249         if(ist->st->avg_frame_rate.num)
1250             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1251
1252         duration /= av_q2d(enc->time_base);
1253     }
1254
1255     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1256
1257     /* by default, we output a single frame */
1258     nb_frames = 1;
1259
1260     *frame_size = 0;
1261
1262     format_video_sync = video_sync_method;
1263     if (format_video_sync < 0)
1264         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1265
1266     if (format_video_sync) {
1267         double vdelta = sync_ipts - ost->sync_opts + duration;
1268         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1269         if (vdelta < -1.1)
1270             nb_frames = 0;
1271         else if (format_video_sync == 2) {
1272             if(vdelta<=-0.6){
1273                 nb_frames=0;
1274             }else if(vdelta>0.6)
1275                 ost->sync_opts= lrintf(sync_ipts);
1276         }else if (vdelta > 1.1)
1277             nb_frames = lrintf(vdelta);
1278 //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);
1279         if (nb_frames == 0){
1280             ++nb_frames_drop;
1281             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1282         }else if (nb_frames > 1) {
1283             nb_frames_dup += nb_frames - 1;
1284             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1285         }
1286     }else
1287         ost->sync_opts= lrintf(sync_ipts);
1288
1289     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1290     if (nb_frames <= 0)
1291         return;
1292
1293     do_video_resample(ost, ist, in_picture, &final_picture);
1294
1295     /* duplicates frame if needed */
1296     for(i=0;i<nb_frames;i++) {
1297         AVPacket pkt;
1298         av_init_packet(&pkt);
1299         pkt.stream_index= ost->index;
1300
1301         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1302             enc->codec->id == CODEC_ID_RAWVIDEO) {
1303             /* raw pictures are written as AVPicture structure to
1304                avoid any copies. We support temporarily the older
1305                method. */
1306             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1307             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1308             pkt.data= (uint8_t *)final_picture;
1309             pkt.size=  sizeof(AVPicture);
1310             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1311             pkt.flags |= AV_PKT_FLAG_KEY;
1312
1313             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1314         } else {
1315             AVFrame big_picture;
1316
1317             big_picture= *final_picture;
1318             /* better than nothing: use input picture interlaced
1319                settings */
1320             big_picture.interlaced_frame = in_picture->interlaced_frame;
1321             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1322                 if (ost->top_field_first == -1)
1323                     big_picture.top_field_first = in_picture->top_field_first;
1324                 else
1325                     big_picture.top_field_first = !!ost->top_field_first;
1326             }
1327
1328             /* handles same_quant here. This is not correct because it may
1329                not be a global option */
1330             big_picture.quality = quality;
1331             if (!enc->me_threshold)
1332                 big_picture.pict_type = 0;
1333 //            big_picture.pts = AV_NOPTS_VALUE;
1334             big_picture.pts= ost->sync_opts;
1335 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1336 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1337             if (ost->forced_kf_index < ost->forced_kf_count &&
1338                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1339                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1340                 ost->forced_kf_index++;
1341             }
1342             ret = avcodec_encode_video(enc,
1343                                        bit_buffer, bit_buffer_size,
1344                                        &big_picture);
1345             if (ret < 0) {
1346                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1347                 exit_program(1);
1348             }
1349
1350             if(ret>0){
1351                 pkt.data= bit_buffer;
1352                 pkt.size= ret;
1353                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1354                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1355 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1356    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1357    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1358
1359                 if(enc->coded_frame->key_frame)
1360                     pkt.flags |= AV_PKT_FLAG_KEY;
1361                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1362                 *frame_size = ret;
1363                 video_size += ret;
1364                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1365                 //        enc->frame_number-1, ret, enc->pict_type);
1366                 /* if two pass, output log */
1367                 if (ost->logfile && enc->stats_out) {
1368                     fprintf(ost->logfile, "%s", enc->stats_out);
1369                 }
1370             }
1371         }
1372         ost->sync_opts++;
1373         ost->frame_number++;
1374     }
1375 }
1376
1377 static double psnr(double d)
1378 {
1379     return -10.0*log(d)/log(10.0);
1380 }
1381
1382 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1383                            int frame_size)
1384 {
1385     AVCodecContext *enc;
1386     int frame_number;
1387     double ti1, bitrate, avg_bitrate;
1388
1389     /* this is executed just the first time do_video_stats is called */
1390     if (!vstats_file) {
1391         vstats_file = fopen(vstats_filename, "w");
1392         if (!vstats_file) {
1393             perror("fopen");
1394             exit_program(1);
1395         }
1396     }
1397
1398     enc = ost->st->codec;
1399     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1400         frame_number = ost->frame_number;
1401         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1402         if (enc->flags&CODEC_FLAG_PSNR)
1403             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1404
1405         fprintf(vstats_file,"f_size= %6d ", frame_size);
1406         /* compute pts value */
1407         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1408         if (ti1 < 0.01)
1409             ti1 = 0.01;
1410
1411         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1412         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1413         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1414             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1415         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1416     }
1417 }
1418
1419 static void print_report(OutputFile *output_files,
1420                          OutputStream *ost_table, int nb_ostreams,
1421                          int is_last_report, int64_t timer_start, int64_t cur_time)
1422 {
1423     char buf[1024];
1424     OutputStream *ost;
1425     AVFormatContext *oc;
1426     int64_t total_size;
1427     AVCodecContext *enc;
1428     int frame_number, vid, i;
1429     double bitrate;
1430     int64_t pts = INT64_MAX;
1431     static int64_t last_time = -1;
1432     static int qp_histogram[52];
1433     int hours, mins, secs, us;
1434
1435     if (!print_stats && !is_last_report)
1436         return;
1437
1438     if (!is_last_report) {
1439         if (last_time == -1) {
1440             last_time = cur_time;
1441             return;
1442         }
1443         if ((cur_time - last_time) < 500000)
1444             return;
1445         last_time = cur_time;
1446     }
1447
1448
1449     oc = output_files[0].ctx;
1450
1451     total_size = avio_size(oc->pb);
1452     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1453         total_size= avio_tell(oc->pb);
1454         if (total_size < 0)
1455             total_size = 0;
1456     }
1457
1458     buf[0] = '\0';
1459     vid = 0;
1460     for(i=0;i<nb_ostreams;i++) {
1461         float q = -1;
1462         ost = &ost_table[i];
1463         enc = ost->st->codec;
1464         if (!ost->stream_copy && enc->coded_frame)
1465             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1466         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1467             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1468         }
1469         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1470             float t = (cur_time-timer_start) / 1000000.0;
1471
1472             frame_number = ost->frame_number;
1473             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1474                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1475             if(is_last_report)
1476                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1477             if(qp_hist){
1478                 int j;
1479                 int qp = lrintf(q);
1480                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1481                     qp_histogram[qp]++;
1482                 for(j=0; j<32; j++)
1483                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1484             }
1485             if (enc->flags&CODEC_FLAG_PSNR){
1486                 int j;
1487                 double error, error_sum=0;
1488                 double scale, scale_sum=0;
1489                 char type[3]= {'Y','U','V'};
1490                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1491                 for(j=0; j<3; j++){
1492                     if(is_last_report){
1493                         error= enc->error[j];
1494                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1495                     }else{
1496                         error= enc->coded_frame->error[j];
1497                         scale= enc->width*enc->height*255.0*255.0;
1498                     }
1499                     if(j) scale/=4;
1500                     error_sum += error;
1501                     scale_sum += scale;
1502                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1503                 }
1504                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1505             }
1506             vid = 1;
1507         }
1508         /* compute min output value */
1509         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1510                                       ost->st->time_base, AV_TIME_BASE_Q));
1511     }
1512
1513     secs = pts / AV_TIME_BASE;
1514     us = pts % AV_TIME_BASE;
1515     mins = secs / 60;
1516     secs %= 60;
1517     hours = mins / 60;
1518     mins %= 60;
1519
1520     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1521
1522     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1523              "size=%8.0fkB time=", total_size / 1024.0);
1524     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1525              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1526              (100 * us) / AV_TIME_BASE);
1527     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1528              "bitrate=%6.1fkbits/s", bitrate);
1529
1530     if (nb_frames_dup || nb_frames_drop)
1531         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1532                 nb_frames_dup, nb_frames_drop);
1533
1534     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1535
1536     fflush(stderr);
1537
1538     if (is_last_report) {
1539         int64_t raw= audio_size + video_size + extra_size;
1540         av_log(NULL, AV_LOG_INFO, "\n");
1541         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1542                video_size/1024.0,
1543                audio_size/1024.0,
1544                extra_size/1024.0,
1545                100.0*(total_size - raw)/raw
1546         );
1547         if(video_size + audio_size + extra_size == 0){
1548             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1549         }
1550     }
1551 }
1552
1553 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1554 {
1555     int i, ret;
1556
1557     for (i = 0; i < nb_ostreams; i++) {
1558         OutputStream   *ost = &ost_table[i];
1559         AVCodecContext *enc = ost->st->codec;
1560         AVFormatContext *os = output_files[ost->file_index].ctx;
1561
1562         if (!ost->encoding_needed)
1563             continue;
1564
1565         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1566             continue;
1567         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1568             continue;
1569
1570         for(;;) {
1571             AVPacket pkt;
1572             int fifo_bytes;
1573             av_init_packet(&pkt);
1574             pkt.stream_index= ost->index;
1575
1576             switch (ost->st->codec->codec_type) {
1577             case AVMEDIA_TYPE_AUDIO:
1578                 fifo_bytes = av_fifo_size(ost->fifo);
1579                 ret = 0;
1580                 /* encode any samples remaining in fifo */
1581                 if (fifo_bytes > 0) {
1582                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1583                     int fs_tmp = enc->frame_size;
1584
1585                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1586                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1587                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1588                     } else { /* pad */
1589                         int frame_bytes = enc->frame_size*osize*enc->channels;
1590                         if (allocated_audio_buf_size < frame_bytes)
1591                             exit_program(1);
1592                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1593                     }
1594
1595                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1596                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1597                                               ost->st->time_base.num, enc->sample_rate);
1598                     enc->frame_size = fs_tmp;
1599                 }
1600                 if (ret <= 0) {
1601                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1602                 }
1603                 if (ret < 0) {
1604                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1605                     exit_program(1);
1606                 }
1607                 audio_size += ret;
1608                 pkt.flags |= AV_PKT_FLAG_KEY;
1609                 break;
1610             case AVMEDIA_TYPE_VIDEO:
1611                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1612                 if (ret < 0) {
1613                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1614                     exit_program(1);
1615                 }
1616                 video_size += ret;
1617                 if(enc->coded_frame && enc->coded_frame->key_frame)
1618                     pkt.flags |= AV_PKT_FLAG_KEY;
1619                 if (ost->logfile && enc->stats_out) {
1620                     fprintf(ost->logfile, "%s", enc->stats_out);
1621                 }
1622                 break;
1623             default:
1624                 ret=-1;
1625             }
1626
1627             if (ret <= 0)
1628                 break;
1629             pkt.data = bit_buffer;
1630             pkt.size = ret;
1631             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1632                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1633             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1634         }
1635     }
1636 }
1637
1638 /*
1639  * Check whether a packet from ist should be written into ost at this time
1640  */
1641 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1642 {
1643     OutputFile *of = &output_files[ost->file_index];
1644     int ist_index  = ist - input_streams;
1645
1646     if (ost->source_index != ist_index)
1647         return 0;
1648
1649     if (of->start_time && ist->pts < of->start_time)
1650         return 0;
1651
1652     if (of->recording_time != INT64_MAX &&
1653         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1654                       (AVRational){1, 1000000}) >= 0) {
1655         ost->is_past_recording_time = 1;
1656         return 0;
1657     }
1658
1659     return 1;
1660 }
1661
1662 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1663 {
1664     OutputFile *of = &output_files[ost->file_index];
1665     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1666     AVPicture pict;
1667     AVPacket opkt;
1668
1669     av_init_packet(&opkt);
1670
1671     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1672         !ost->copy_initial_nonkeyframes)
1673         return;
1674
1675     /* force the input stream PTS */
1676     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1677         audio_size += pkt->size;
1678     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1679         video_size += pkt->size;
1680         ost->sync_opts++;
1681     }
1682
1683     opkt.stream_index = ost->index;
1684     if (pkt->pts != AV_NOPTS_VALUE)
1685         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1686     else
1687         opkt.pts = AV_NOPTS_VALUE;
1688
1689     if (pkt->dts == AV_NOPTS_VALUE)
1690         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1691     else
1692         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1693     opkt.dts -= ost_tb_start_time;
1694
1695     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1696     opkt.flags    = pkt->flags;
1697
1698     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1699     if(   ost->st->codec->codec_id != CODEC_ID_H264
1700        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1701        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1702        ) {
1703         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1704             opkt.destruct = av_destruct_packet;
1705     } else {
1706         opkt.data = pkt->data;
1707         opkt.size = pkt->size;
1708     }
1709     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1710         /* store AVPicture in AVPacket, as expected by the output format */
1711         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1712         opkt.data = (uint8_t *)&pict;
1713         opkt.size = sizeof(AVPicture);
1714         opkt.flags |= AV_PKT_FLAG_KEY;
1715     }
1716
1717     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1718     ost->st->codec->frame_number++;
1719     ost->frame_number++;
1720     av_free_packet(&opkt);
1721 }
1722
1723 static void rate_emu_sleep(InputStream *ist)
1724 {
1725     if (input_files[ist->file_index].rate_emu) {
1726         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1727         int64_t now = av_gettime() - ist->start;
1728         if (pts > now)
1729             usleep(pts - now);
1730     }
1731 }
1732
1733 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1734 {
1735     static unsigned int samples_size = 0;
1736     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1737     uint8_t *decoded_data_buf  = NULL;
1738     int      decoded_data_size = 0;
1739     int i, ret;
1740
1741     if (pkt && samples_size < FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1742         av_free(samples);
1743         samples_size = FFMAX(pkt->size * bps, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1744         samples      = av_malloc(samples_size);
1745     }
1746     decoded_data_size = samples_size;
1747
1748     ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1749                                 pkt);
1750     if (ret < 0)
1751         return ret;
1752     *got_output  = decoded_data_size > 0;
1753
1754     /* Some bug in mpeg audio decoder gives */
1755     /* decoded_data_size < 0, it seems they are overflows */
1756     if (!*got_output) {
1757         /* no audio frame */
1758         return ret;
1759     }
1760
1761     decoded_data_buf = (uint8_t *)samples;
1762     ist->next_pts   += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1763                        (ist->st->codec->sample_rate * ist->st->codec->channels);
1764
1765     // preprocess audio (volume)
1766     if (audio_volume != 256) {
1767         switch (ist->st->codec->sample_fmt) {
1768         case AV_SAMPLE_FMT_U8:
1769         {
1770             uint8_t *volp = samples;
1771             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1772                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1773                 *volp++ = av_clip_uint8(v);
1774             }
1775             break;
1776         }
1777         case AV_SAMPLE_FMT_S16:
1778         {
1779             int16_t *volp = samples;
1780             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1781                 int v = ((*volp) * audio_volume + 128) >> 8;
1782                 *volp++ = av_clip_int16(v);
1783             }
1784             break;
1785         }
1786         case AV_SAMPLE_FMT_S32:
1787         {
1788             int32_t *volp = samples;
1789             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1790                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1791                 *volp++ = av_clipl_int32(v);
1792             }
1793             break;
1794         }
1795         case AV_SAMPLE_FMT_FLT:
1796         {
1797             float *volp = samples;
1798             float scale = audio_volume / 256.f;
1799             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1800                 *volp++ *= scale;
1801             }
1802             break;
1803         }
1804         case AV_SAMPLE_FMT_DBL:
1805         {
1806             double *volp = samples;
1807             double scale = audio_volume / 256.;
1808             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1809                 *volp++ *= scale;
1810             }
1811             break;
1812         }
1813         default:
1814             av_log(NULL, AV_LOG_FATAL,
1815                    "Audio volume adjustment on sample format %s is not supported.\n",
1816                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1817             exit_program(1);
1818         }
1819     }
1820
1821     rate_emu_sleep(ist);
1822
1823     for (i = 0; i < nb_output_streams; i++) {
1824         OutputStream *ost = &output_streams[i];
1825
1826         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1827             continue;
1828         do_audio_out(output_files[ost->file_index].ctx, ost, ist,
1829                      decoded_data_buf, decoded_data_size);
1830     }
1831     return ret;
1832 }
1833
1834 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1835 {
1836     AVFrame *decoded_frame, *filtered_frame = NULL;
1837     void *buffer_to_free = NULL;
1838     int i, ret = 0;
1839     float quality = 0;
1840 #if CONFIG_AVFILTER
1841     int frame_available = 1;
1842 #endif
1843     int duration=0;
1844     int64_t *best_effort_timestamp;
1845     AVRational *frame_sample_aspect;
1846
1847     if (!(decoded_frame = avcodec_alloc_frame()))
1848         return AVERROR(ENOMEM);
1849     pkt->pts  = *pkt_pts;
1850     pkt->dts  = *pkt_dts;
1851     *pkt_pts  = AV_NOPTS_VALUE;
1852
1853     if (pkt->duration) {
1854         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1855     } else if(ist->st->codec->time_base.num != 0) {
1856         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1857         duration = ((int64_t)AV_TIME_BASE *
1858                           ist->st->codec->time_base.num * ticks) /
1859                           ist->st->codec->time_base.den;
1860     }
1861
1862     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
1863         *pkt_dts += duration;
1864     }else
1865         *pkt_dts = AV_NOPTS_VALUE;
1866
1867     ret = avcodec_decode_video2(ist->st->codec,
1868                                 decoded_frame, got_output, pkt);
1869     if (ret < 0)
1870         goto fail;
1871
1872     quality = same_quant ? decoded_frame->quality : 0;
1873     if (!*got_output) {
1874         /* no picture yet */
1875         av_freep(&decoded_frame);
1876         return ret;
1877     }
1878
1879     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
1880     if(*best_effort_timestamp != AV_NOPTS_VALUE)
1881         ist->next_pts = ist->pts = *best_effort_timestamp;
1882
1883     ist->next_pts += duration;
1884     pkt->size = 0;
1885
1886     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1887
1888 #if CONFIG_AVFILTER
1889     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1890     for(i=0;i<nb_output_streams;i++) {
1891         OutputStream *ost = ost = &output_streams[i];
1892         if(check_output_constraints(ist, ost)){
1893             if (!frame_sample_aspect->num)
1894                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
1895             decoded_frame->pts = ist->pts;
1896
1897             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
1898         }
1899     }
1900 #endif
1901
1902     rate_emu_sleep(ist);
1903
1904     for (i = 0; i < nb_output_streams; i++) {
1905         OutputStream *ost = &output_streams[i];
1906         int frame_size;
1907
1908         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1909             continue;
1910
1911 #if CONFIG_AVFILTER
1912         if (ost->input_video_filter) {
1913             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1914         }
1915         while (frame_available) {
1916             if (ost->output_video_filter) {
1917                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1918                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1919                     goto cont;
1920                 if (!filtered_frame && !(filtered_frame = avcodec_alloc_frame())) {
1921                     ret = AVERROR(ENOMEM);
1922                     goto fail;
1923                 }
1924                 *filtered_frame= *decoded_frame; //for me_threshold
1925                 if (ost->picref) {
1926                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
1927                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1928                 }
1929             }
1930             if (ost->picref->video && !ost->frame_aspect_ratio)
1931                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1932 #else
1933             filtered_frame = decoded_frame;
1934 #endif
1935
1936             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1937                          same_quant ? quality : ost->st->codec->global_quality);
1938             if (vstats_filename && frame_size)
1939                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1940 #if CONFIG_AVFILTER
1941             cont:
1942             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1943             avfilter_unref_buffer(ost->picref);
1944         }
1945         av_freep(&filtered_frame);
1946 #endif
1947     }
1948
1949 fail:
1950     av_free(buffer_to_free);
1951     av_freep(&decoded_frame);
1952     return ret;
1953 }
1954
1955 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1956 {
1957     AVSubtitle subtitle;
1958     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1959                                           &subtitle, got_output, pkt);
1960     if (ret < 0)
1961         return ret;
1962     if (!*got_output)
1963         return ret;
1964
1965     rate_emu_sleep(ist);
1966
1967     for (i = 0; i < nb_output_streams; i++) {
1968         OutputStream *ost = &output_streams[i];
1969
1970         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1971             continue;
1972
1973         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1974     }
1975
1976     avsubtitle_free(&subtitle);
1977     return ret;
1978 }
1979
1980 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1981 static int output_packet(InputStream *ist,
1982                          OutputStream *ost_table, int nb_ostreams,
1983                          const AVPacket *pkt)
1984 {
1985     int ret = 0, i;
1986     int got_output;
1987     int64_t pkt_dts = AV_NOPTS_VALUE;
1988     int64_t pkt_pts = AV_NOPTS_VALUE;
1989
1990     AVPacket avpkt;
1991
1992     if (ist->next_pts == AV_NOPTS_VALUE)
1993         ist->next_pts = ist->pts;
1994
1995     if (pkt == NULL) {
1996         /* EOF handling */
1997         av_init_packet(&avpkt);
1998         avpkt.data = NULL;
1999         avpkt.size = 0;
2000         goto handle_eof;
2001     } else {
2002         avpkt = *pkt;
2003     }
2004
2005     if(pkt->dts != AV_NOPTS_VALUE){
2006         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2007             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2008         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2009     }
2010     if(pkt->pts != AV_NOPTS_VALUE)
2011         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2012
2013     //while we have more to decode or while the decoder did output something on EOF
2014     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2015     handle_eof:
2016
2017         ist->pts = ist->next_pts;
2018
2019         if (avpkt.size && avpkt.size != pkt->size) {
2020             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2021                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2022             ist->showed_multi_packet_warning = 1;
2023         }
2024
2025         switch(ist->st->codec->codec_type) {
2026         case AVMEDIA_TYPE_AUDIO:
2027             ret = transcode_audio    (ist, &avpkt, &got_output);
2028             break;
2029         case AVMEDIA_TYPE_VIDEO:
2030             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2031             break;
2032         case AVMEDIA_TYPE_SUBTITLE:
2033             ret = transcode_subtitles(ist, &avpkt, &got_output);
2034             break;
2035         default:
2036             return -1;
2037         }
2038
2039         if (ret < 0)
2040             return ret;
2041         // touch data and size only if not EOF
2042         if (pkt) {
2043             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2044                 ret = avpkt.size;
2045             avpkt.data += ret;
2046             avpkt.size -= ret;
2047         }
2048         if (!got_output) {
2049             continue;
2050         }
2051     }
2052
2053     /* handle stream copy */
2054     if (!ist->decoding_needed) {
2055         rate_emu_sleep(ist);
2056         ist->pts = ist->next_pts;
2057         switch (ist->st->codec->codec_type) {
2058         case AVMEDIA_TYPE_AUDIO:
2059             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2060                              ist->st->codec->sample_rate;
2061             break;
2062         case AVMEDIA_TYPE_VIDEO:
2063             if (pkt->duration) {
2064                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2065             } else if(ist->st->codec->time_base.num != 0) {
2066                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2067                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2068                                   ist->st->codec->time_base.num * ticks) /
2069                                   ist->st->codec->time_base.den;
2070             }
2071             break;
2072         }
2073     }
2074     for (i = 0; pkt && i < nb_ostreams; i++) {
2075         OutputStream *ost = &ost_table[i];
2076
2077         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2078             continue;
2079
2080         do_streamcopy(ist, ost, pkt);
2081     }
2082
2083     return 0;
2084 }
2085
2086 static void print_sdp(OutputFile *output_files, int n)
2087 {
2088     char sdp[2048];
2089     int i;
2090     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2091
2092     if (!avc)
2093         exit_program(1);
2094     for (i = 0; i < n; i++)
2095         avc[i] = output_files[i].ctx;
2096
2097     av_sdp_create(avc, n, sdp, sizeof(sdp));
2098     printf("SDP:\n%s\n", sdp);
2099     fflush(stdout);
2100     av_freep(&avc);
2101 }
2102
2103 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2104                              char *error, int error_len)
2105 {
2106     InputStream *ist = &input_streams[ist_index];
2107     if (ist->decoding_needed) {
2108         AVCodec *codec = ist->dec;
2109         if (!codec) {
2110             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2111                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2112             return AVERROR(EINVAL);
2113         }
2114         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2115             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2116                     ist->file_index, ist->st->index);
2117             return AVERROR(EINVAL);
2118         }
2119         assert_codec_experimental(ist->st->codec, 0);
2120         assert_avoptions(ist->opts);
2121     }
2122
2123     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;
2124     ist->next_pts = AV_NOPTS_VALUE;
2125     ist->is_start = 1;
2126
2127     return 0;
2128 }
2129
2130 static int transcode_init(OutputFile *output_files, int nb_output_files,
2131                           InputFile  *input_files,  int nb_input_files)
2132 {
2133     int ret = 0, i, j, k;
2134     AVFormatContext *oc;
2135     AVCodecContext *codec, *icodec;
2136     OutputStream *ost;
2137     InputStream *ist;
2138     char error[1024];
2139     int want_sdp = 1;
2140
2141     /* init framerate emulation */
2142     for (i = 0; i < nb_input_files; i++) {
2143         InputFile *ifile = &input_files[i];
2144         if (ifile->rate_emu)
2145             for (j = 0; j < ifile->nb_streams; j++)
2146                 input_streams[j + ifile->ist_index].start = av_gettime();
2147     }
2148
2149     /* output stream init */
2150     for (i = 0; i < nb_output_files; i++) {
2151         oc = output_files[i].ctx;
2152         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2153             av_dump_format(oc, i, oc->filename, 1);
2154             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2155             return AVERROR(EINVAL);
2156         }
2157     }
2158
2159     /* for each output stream, we compute the right encoding parameters */
2160     for (i = 0; i < nb_output_streams; i++) {
2161         ost = &output_streams[i];
2162         oc  = output_files[ost->file_index].ctx;
2163         ist = &input_streams[ost->source_index];
2164
2165         if (ost->attachment_filename)
2166             continue;
2167
2168         codec  = ost->st->codec;
2169         icodec = ist->st->codec;
2170
2171         ost->st->disposition          = ist->st->disposition;
2172         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2173         codec->chroma_sample_location = icodec->chroma_sample_location;
2174
2175         if (ost->stream_copy) {
2176             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2177
2178             if (extra_size > INT_MAX) {
2179                 return AVERROR(EINVAL);
2180             }
2181
2182             /* if stream_copy is selected, no need to decode or encode */
2183             codec->codec_id   = icodec->codec_id;
2184             codec->codec_type = icodec->codec_type;
2185
2186             if (!codec->codec_tag) {
2187                 if (!oc->oformat->codec_tag ||
2188                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2189                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2190                     codec->codec_tag = icodec->codec_tag;
2191             }
2192
2193             codec->bit_rate       = icodec->bit_rate;
2194             codec->rc_max_rate    = icodec->rc_max_rate;
2195             codec->rc_buffer_size = icodec->rc_buffer_size;
2196             codec->extradata      = av_mallocz(extra_size);
2197             if (!codec->extradata) {
2198                 return AVERROR(ENOMEM);
2199             }
2200             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2201             codec->extradata_size= icodec->extradata_size;
2202
2203             codec->time_base = ist->st->time_base;
2204             if(!strcmp(oc->oformat->name, "avi")) {
2205                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2206                                  && av_q2d(ist->st->time_base) < 1.0/500
2207                     || copy_tb==0){
2208                     codec->time_base = icodec->time_base;
2209                     codec->time_base.num *= icodec->ticks_per_frame;
2210                     codec->time_base.den *= 2;
2211                 }
2212             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2213                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2214                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2215             ) {
2216                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2217                                 && av_q2d(ist->st->time_base) < 1.0/500
2218                    || copy_tb==0){
2219                     codec->time_base = icodec->time_base;
2220                     codec->time_base.num *= icodec->ticks_per_frame;
2221                 }
2222             }
2223             av_reduce(&codec->time_base.num, &codec->time_base.den,
2224                         codec->time_base.num, codec->time_base.den, INT_MAX);
2225
2226             switch(codec->codec_type) {
2227             case AVMEDIA_TYPE_AUDIO:
2228                 if(audio_volume != 256) {
2229                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2230                     exit_program(1);
2231                 }
2232                 codec->channel_layout     = icodec->channel_layout;
2233                 codec->sample_rate        = icodec->sample_rate;
2234                 codec->channels           = icodec->channels;
2235                 codec->frame_size         = icodec->frame_size;
2236                 codec->audio_service_type = icodec->audio_service_type;
2237                 codec->block_align        = icodec->block_align;
2238                 break;
2239             case AVMEDIA_TYPE_VIDEO:
2240                 codec->pix_fmt            = icodec->pix_fmt;
2241                 codec->width              = icodec->width;
2242                 codec->height             = icodec->height;
2243                 codec->has_b_frames       = icodec->has_b_frames;
2244                 if (!codec->sample_aspect_ratio.num) {
2245                     codec->sample_aspect_ratio   =
2246                     ost->st->sample_aspect_ratio =
2247                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2248                         ist->st->codec->sample_aspect_ratio.num ?
2249                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2250                 }
2251                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2252                 break;
2253             case AVMEDIA_TYPE_SUBTITLE:
2254                 codec->width  = icodec->width;
2255                 codec->height = icodec->height;
2256                 break;
2257             case AVMEDIA_TYPE_DATA:
2258             case AVMEDIA_TYPE_ATTACHMENT:
2259                 break;
2260             default:
2261                 abort();
2262             }
2263         } else {
2264             if (!ost->enc)
2265                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2266
2267             ist->decoding_needed = 1;
2268             ost->encoding_needed = 1;
2269
2270             switch(codec->codec_type) {
2271             case AVMEDIA_TYPE_AUDIO:
2272                 ost->fifo = av_fifo_alloc(1024);
2273                 if (!ost->fifo) {
2274                     return AVERROR(ENOMEM);
2275                 }
2276                 if (!codec->sample_rate)
2277                     codec->sample_rate = icodec->sample_rate;
2278                 choose_sample_rate(ost->st, ost->enc);
2279                 codec->time_base = (AVRational){1, codec->sample_rate};
2280
2281                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2282                     codec->sample_fmt = icodec->sample_fmt;
2283                 choose_sample_fmt(ost->st, ost->enc);
2284
2285                 if (ost->audio_channels_mapped) {
2286                     /* the requested output channel is set to the number of
2287                      * -map_channel only if no -ac are specified */
2288                     if (!codec->channels) {
2289                         codec->channels       = ost->audio_channels_mapped;
2290                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2291                         if (!codec->channel_layout) {
2292                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2293                             exit_program(1);
2294                         }
2295                     }
2296                     /* fill unused channel mapping with -1 (which means a muted
2297                      * channel in case the number of output channels is bigger
2298                      * than the number of mapped channel) */
2299                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2300                         ost->audio_channels_map[j] = -1;
2301                 } else if (!codec->channels) {
2302                     codec->channels = icodec->channels;
2303                     codec->channel_layout = icodec->channel_layout;
2304                 }
2305                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2306                     codec->channel_layout = 0;
2307
2308                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2309                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2310                                             || codec->channel_layout != icodec->channel_layout;
2311                 icodec->request_channels  = codec->channels;
2312                 ost->resample_sample_fmt  = icodec->sample_fmt;
2313                 ost->resample_sample_rate = icodec->sample_rate;
2314                 ost->resample_channels    = icodec->channels;
2315                 break;
2316             case AVMEDIA_TYPE_VIDEO:
2317                 if (codec->pix_fmt == PIX_FMT_NONE)
2318                     codec->pix_fmt = icodec->pix_fmt;
2319                 choose_pixel_fmt(ost->st, ost->enc);
2320
2321                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2322                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2323                     exit_program(1);
2324                 }
2325
2326                 if (!codec->width || !codec->height) {
2327                     codec->width  = icodec->width;
2328                     codec->height = icodec->height;
2329                 }
2330
2331                 ost->video_resample = codec->width   != icodec->width  ||
2332                                       codec->height  != icodec->height ||
2333                                       codec->pix_fmt != icodec->pix_fmt;
2334                 if (ost->video_resample) {
2335                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2336                 }
2337
2338                 ost->resample_height  = icodec->height;
2339                 ost->resample_width   = icodec->width;
2340                 ost->resample_pix_fmt = icodec->pix_fmt;
2341
2342                 if (!ost->frame_rate.num)
2343                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2344                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2345                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2346                     ost->frame_rate = ost->enc->supported_framerates[idx];
2347                 }
2348                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2349                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2350                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2351                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2352                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2353                 }
2354                 for (j = 0; j < ost->forced_kf_count; j++)
2355                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2356                                                          AV_TIME_BASE_Q,
2357                                                          codec->time_base);
2358
2359 #if CONFIG_AVFILTER
2360                 if (configure_video_filters(ist, ost)) {
2361                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2362                     exit(1);
2363                 }
2364 #endif
2365                 break;
2366             case AVMEDIA_TYPE_SUBTITLE:
2367                 break;
2368             default:
2369                 abort();
2370                 break;
2371             }
2372             /* two pass mode */
2373             if (codec->codec_id != CODEC_ID_H264 &&
2374                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2375                 char logfilename[1024];
2376                 FILE *f;
2377
2378                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2379                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2380                          i);
2381                 if (codec->flags & CODEC_FLAG_PASS2) {
2382                     char  *logbuffer;
2383                     size_t logbuffer_size;
2384                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2385                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2386                                logfilename);
2387                         exit_program(1);
2388                     }
2389                     codec->stats_in = logbuffer;
2390                 }
2391                 if (codec->flags & CODEC_FLAG_PASS1) {
2392                     f = fopen(logfilename, "wb");
2393                     if (!f) {
2394                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2395                                logfilename, strerror(errno));
2396                         exit_program(1);
2397                     }
2398                     ost->logfile = f;
2399                 }
2400             }
2401         }
2402         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2403             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2404             int size        = codec->width * codec->height;
2405             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2406         }
2407     }
2408
2409     if (!bit_buffer)
2410         bit_buffer = av_malloc(bit_buffer_size);
2411     if (!bit_buffer) {
2412         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2413                bit_buffer_size);
2414         return AVERROR(ENOMEM);
2415     }
2416
2417     /* open each encoder */
2418     for (i = 0; i < nb_output_streams; i++) {
2419         ost = &output_streams[i];
2420         if (ost->encoding_needed) {
2421             AVCodec      *codec = ost->enc;
2422             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2423             if (!codec) {
2424                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2425                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2426                 ret = AVERROR(EINVAL);
2427                 goto dump_format;
2428             }
2429             if (dec->subtitle_header) {
2430                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2431                 if (!ost->st->codec->subtitle_header) {
2432                     ret = AVERROR(ENOMEM);
2433                     goto dump_format;
2434                 }
2435                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2436                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2437             }
2438             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2439                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2440                         ost->file_index, ost->index);
2441                 ret = AVERROR(EINVAL);
2442                 goto dump_format;
2443             }
2444             assert_codec_experimental(ost->st->codec, 1);
2445             assert_avoptions(ost->opts);
2446             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2447                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2448                                              " It takes bits/s as argument, not kbits/s\n");
2449             extra_size += ost->st->codec->extradata_size;
2450
2451             if (ost->st->codec->me_threshold)
2452                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2453         }
2454     }
2455
2456     /* init input streams */
2457     for (i = 0; i < nb_input_streams; i++)
2458         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2459             goto dump_format;
2460
2461     /* discard unused programs */
2462     for (i = 0; i < nb_input_files; i++) {
2463         InputFile *ifile = &input_files[i];
2464         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2465             AVProgram *p = ifile->ctx->programs[j];
2466             int discard  = AVDISCARD_ALL;
2467
2468             for (k = 0; k < p->nb_stream_indexes; k++)
2469                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2470                     discard = AVDISCARD_DEFAULT;
2471                     break;
2472                 }
2473             p->discard = discard;
2474         }
2475     }
2476
2477     /* open files and write file headers */
2478     for (i = 0; i < nb_output_files; i++) {
2479         oc = output_files[i].ctx;
2480         oc->interrupt_callback = int_cb;
2481         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2482             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2483             ret = AVERROR(EINVAL);
2484             goto dump_format;
2485         }
2486 //        assert_avoptions(output_files[i].opts);
2487         if (strcmp(oc->oformat->name, "rtp")) {
2488             want_sdp = 0;
2489         }
2490     }
2491
2492  dump_format:
2493     /* dump the file output parameters - cannot be done before in case
2494        of stream copy */
2495     for (i = 0; i < nb_output_files; i++) {
2496         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2497     }
2498
2499     /* dump the stream mapping */
2500     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2501     for (i = 0; i < nb_output_streams; i++) {
2502         ost = &output_streams[i];
2503
2504         if (ost->attachment_filename) {
2505             /* an attached file */
2506             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2507                    ost->attachment_filename, ost->file_index, ost->index);
2508             continue;
2509         }
2510         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2511                input_streams[ost->source_index].file_index,
2512                input_streams[ost->source_index].st->index,
2513                ost->file_index,
2514                ost->index);
2515         if (ost->audio_channels_mapped) {
2516             av_log(NULL, AV_LOG_INFO, " [ch:");
2517             for (j = 0; j < ost->audio_channels_mapped; j++)
2518                 if (ost->audio_channels_map[j] == -1)
2519                     av_log(NULL, AV_LOG_INFO, " M");
2520                 else
2521                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2522             av_log(NULL, AV_LOG_INFO, "]");
2523         }
2524         if (ost->sync_ist != &input_streams[ost->source_index])
2525             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2526                    ost->sync_ist->file_index,
2527                    ost->sync_ist->st->index);
2528         if (ost->stream_copy)
2529             av_log(NULL, AV_LOG_INFO, " (copy)");
2530         else
2531             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2532                    input_streams[ost->source_index].dec->name : "?",
2533                    ost->enc ? ost->enc->name : "?");
2534         av_log(NULL, AV_LOG_INFO, "\n");
2535     }
2536
2537     if (ret) {
2538         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2539         return ret;
2540     }
2541
2542     if (want_sdp) {
2543         print_sdp(output_files, nb_output_files);
2544     }
2545
2546     return 0;
2547 }
2548
2549 /*
2550  * The following code is the main loop of the file converter
2551  */
2552 static int transcode(OutputFile *output_files, int nb_output_files,
2553                      InputFile  *input_files,  int nb_input_files)
2554 {
2555     int ret, i;
2556     AVFormatContext *is, *os;
2557     OutputStream *ost;
2558     InputStream *ist;
2559     uint8_t *no_packet;
2560     int no_packet_count=0;
2561     int64_t timer_start;
2562     int key;
2563
2564     if (!(no_packet = av_mallocz(nb_input_files)))
2565         exit_program(1);
2566
2567     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2568     if (ret < 0)
2569         goto fail;
2570
2571     if (!using_stdin) {
2572         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2573     }
2574
2575     timer_start = av_gettime();
2576
2577     for(; received_sigterm == 0;) {
2578         int file_index, ist_index;
2579         AVPacket pkt;
2580         int64_t ipts_min;
2581         double opts_min;
2582         int64_t cur_time= av_gettime();
2583
2584         ipts_min= INT64_MAX;
2585         opts_min= 1e100;
2586         /* if 'q' pressed, exits */
2587         if (!using_stdin) {
2588             static int64_t last_time;
2589             if (received_nb_signals)
2590                 break;
2591             /* read_key() returns 0 on EOF */
2592             if(cur_time - last_time >= 100000 && !run_as_daemon){
2593                 key =  read_key();
2594                 last_time = cur_time;
2595             }else
2596                 key = -1;
2597             if (key == 'q')
2598                 break;
2599             if (key == '+') av_log_set_level(av_log_get_level()+10);
2600             if (key == '-') av_log_set_level(av_log_get_level()-10);
2601             if (key == 's') qp_hist     ^= 1;
2602             if (key == 'h'){
2603                 if (do_hex_dump){
2604                     do_hex_dump = do_pkt_dump = 0;
2605                 } else if(do_pkt_dump){
2606                     do_hex_dump = 1;
2607                 } else
2608                     do_pkt_dump = 1;
2609                 av_log_set_level(AV_LOG_DEBUG);
2610             }
2611 #if CONFIG_AVFILTER
2612             if (key == 'c' || key == 'C'){
2613                 char buf[4096], target[64], command[256], arg[256] = {0};
2614                 double time;
2615                 int k, n = 0;
2616                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2617                 i = 0;
2618                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2619                     if (k > 0)
2620                         buf[i++] = k;
2621                 buf[i] = 0;
2622                 if (k > 0 &&
2623                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2624                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2625                            target, time, command, arg);
2626                     for (i = 0; i < nb_output_streams; i++) {
2627                         ost = &output_streams[i];
2628                         if (ost->graph) {
2629                             if (time < 0) {
2630                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2631                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2632                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2633                             } else {
2634                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2635                             }
2636                         }
2637                     }
2638                 } else {
2639                     av_log(NULL, AV_LOG_ERROR,
2640                            "Parse error, at least 3 arguments were expected, "
2641                            "only %d given in string '%s'\n", n, buf);
2642                 }
2643             }
2644 #endif
2645             if (key == 'd' || key == 'D'){
2646                 int debug=0;
2647                 if(key == 'D') {
2648                     debug = input_streams[0].st->codec->debug<<1;
2649                     if(!debug) debug = 1;
2650                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2651                         debug += debug;
2652                 }else
2653                     if(scanf("%d", &debug)!=1)
2654                         fprintf(stderr,"error parsing debug value\n");
2655                 for(i=0;i<nb_input_streams;i++) {
2656                     input_streams[i].st->codec->debug = debug;
2657                 }
2658                 for(i=0;i<nb_output_streams;i++) {
2659                     ost = &output_streams[i];
2660                     ost->st->codec->debug = debug;
2661                 }
2662                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2663                 fprintf(stderr,"debug=%d\n", debug);
2664             }
2665             if (key == '?'){
2666                 fprintf(stderr, "key    function\n"
2667                                 "?      show this help\n"
2668                                 "+      increase verbosity\n"
2669                                 "-      decrease verbosity\n"
2670                                 "c      Send command to filtergraph\n"
2671                                 "D      cycle through available debug modes\n"
2672                                 "h      dump packets/hex press to cycle through the 3 states\n"
2673                                 "q      quit\n"
2674                                 "s      Show QP histogram\n"
2675                 );
2676             }
2677         }
2678
2679         /* select the stream that we must read now by looking at the
2680            smallest output pts */
2681         file_index = -1;
2682         for (i = 0; i < nb_output_streams; i++) {
2683             OutputFile *of;
2684             int64_t ipts;
2685             double  opts;
2686             ost = &output_streams[i];
2687             of = &output_files[ost->file_index];
2688             os = output_files[ost->file_index].ctx;
2689             ist = &input_streams[ost->source_index];
2690             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2691                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2692                 continue;
2693             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2694             ipts = ist->pts;
2695             if (!input_files[ist->file_index].eof_reached){
2696                 if(ipts < ipts_min) {
2697                     ipts_min = ipts;
2698                     if(input_sync ) file_index = ist->file_index;
2699                 }
2700                 if(opts < opts_min) {
2701                     opts_min = opts;
2702                     if(!input_sync) file_index = ist->file_index;
2703                 }
2704             }
2705             if (ost->frame_number >= ost->max_frames) {
2706                 int j;
2707                 for (j = 0; j < of->ctx->nb_streams; j++)
2708                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2709                 continue;
2710             }
2711         }
2712         /* if none, if is finished */
2713         if (file_index < 0) {
2714             if(no_packet_count){
2715                 no_packet_count=0;
2716                 memset(no_packet, 0, nb_input_files);
2717                 usleep(10000);
2718                 continue;
2719             }
2720             break;
2721         }
2722
2723         /* read a frame from it and output it in the fifo */
2724         is = input_files[file_index].ctx;
2725         ret= av_read_frame(is, &pkt);
2726         if(ret == AVERROR(EAGAIN)){
2727             no_packet[file_index]=1;
2728             no_packet_count++;
2729             continue;
2730         }
2731         if (ret < 0) {
2732             input_files[file_index].eof_reached = 1;
2733             if (opt_shortest)
2734                 break;
2735             else
2736                 continue;
2737         }
2738
2739         no_packet_count=0;
2740         memset(no_packet, 0, nb_input_files);
2741
2742         if (do_pkt_dump) {
2743             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2744                              is->streams[pkt.stream_index]);
2745         }
2746         /* the following test is needed in case new streams appear
2747            dynamically in stream : we ignore them */
2748         if (pkt.stream_index >= input_files[file_index].nb_streams)
2749             goto discard_packet;
2750         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2751         ist = &input_streams[ist_index];
2752         if (ist->discard)
2753             goto discard_packet;
2754
2755         if (pkt.dts != AV_NOPTS_VALUE)
2756             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2757         if (pkt.pts != AV_NOPTS_VALUE)
2758             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2759
2760         if(pkt.pts != AV_NOPTS_VALUE)
2761             pkt.pts *= ist->ts_scale;
2762         if(pkt.dts != AV_NOPTS_VALUE)
2763             pkt.dts *= ist->ts_scale;
2764
2765 //        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);
2766         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2767             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2768             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2769             int64_t delta= pkt_dts - ist->next_pts;
2770             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2771                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2772                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2773                 pkt_dts+1<ist->pts)&& !copy_ts){
2774                 input_files[ist->file_index].ts_offset -= delta;
2775                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2776                        delta, input_files[ist->file_index].ts_offset);
2777                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2778                 if(pkt.pts != AV_NOPTS_VALUE)
2779                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2780             }
2781         }
2782
2783         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2784         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2785
2786             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2787                    ist->file_index, ist->st->index);
2788             if (exit_on_error)
2789                 exit_program(1);
2790             av_free_packet(&pkt);
2791             continue;
2792         }
2793
2794     discard_packet:
2795         av_free_packet(&pkt);
2796
2797         /* dump report by using the output first video and audio streams */
2798         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2799     }
2800
2801     /* at the end of stream, we must flush the decoder buffers */
2802     for (i = 0; i < nb_input_streams; i++) {
2803         ist = &input_streams[i];
2804         if (ist->decoding_needed) {
2805             output_packet(ist, output_streams, nb_output_streams, NULL);
2806         }
2807     }
2808     flush_encoders(output_streams, nb_output_streams);
2809
2810     term_exit();
2811
2812     /* write the trailer if needed and close file */
2813     for(i=0;i<nb_output_files;i++) {
2814         os = output_files[i].ctx;
2815         av_write_trailer(os);
2816     }
2817
2818     /* dump report by using the first video and audio streams */
2819     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
2820
2821     /* close each encoder */
2822     for (i = 0; i < nb_output_streams; i++) {
2823         ost = &output_streams[i];
2824         if (ost->encoding_needed) {
2825             av_freep(&ost->st->codec->stats_in);
2826             avcodec_close(ost->st->codec);
2827         }
2828 #if CONFIG_AVFILTER
2829         avfilter_graph_free(&ost->graph);
2830 #endif
2831     }
2832
2833     /* close each decoder */
2834     for (i = 0; i < nb_input_streams; i++) {
2835         ist = &input_streams[i];
2836         if (ist->decoding_needed) {
2837             avcodec_close(ist->st->codec);
2838         }
2839     }
2840
2841     /* finished ! */
2842     ret = 0;
2843
2844  fail:
2845     av_freep(&bit_buffer);
2846     av_freep(&no_packet);
2847
2848     if (output_streams) {
2849         for (i = 0; i < nb_output_streams; i++) {
2850             ost = &output_streams[i];
2851             if (ost) {
2852                 if (ost->stream_copy)
2853                     av_freep(&ost->st->codec->extradata);
2854                 if (ost->logfile) {
2855                     fclose(ost->logfile);
2856                     ost->logfile = NULL;
2857                 }
2858                 av_fifo_free(ost->fifo); /* works even if fifo is not
2859                                              initialized but set to zero */
2860                 av_freep(&ost->st->codec->subtitle_header);
2861                 av_free(ost->resample_frame.data[0]);
2862                 av_free(ost->forced_kf_pts);
2863                 if (ost->video_resample)
2864                     sws_freeContext(ost->img_resample_ctx);
2865                 swr_free(&ost->swr);
2866                 av_dict_free(&ost->opts);
2867             }
2868         }
2869     }
2870     return ret;
2871 }
2872
2873 static int opt_frame_crop(const char *opt, const char *arg)
2874 {
2875     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
2876     return AVERROR(EINVAL);
2877 }
2878
2879 static int opt_pad(const char *opt, const char *arg)
2880 {
2881     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
2882     return -1;
2883 }
2884
2885 static double parse_frame_aspect_ratio(const char *arg)
2886 {
2887     int x = 0, y = 0;
2888     double ar = 0;
2889     const char *p;
2890     char *end;
2891
2892     p = strchr(arg, ':');
2893     if (p) {
2894         x = strtol(arg, &end, 10);
2895         if (end == p)
2896             y = strtol(end+1, &end, 10);
2897         if (x > 0 && y > 0)
2898             ar = (double)x / (double)y;
2899     } else
2900         ar = strtod(arg, NULL);
2901
2902     if (!ar) {
2903         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2904         exit_program(1);
2905     }
2906     return ar;
2907 }
2908
2909 static int opt_video_channel(const char *opt, const char *arg)
2910 {
2911     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
2912     return opt_default("channel", arg);
2913 }
2914
2915 static int opt_video_standard(const char *opt, const char *arg)
2916 {
2917     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
2918     return opt_default("standard", arg);
2919 }
2920
2921 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2922 {
2923     audio_codec_name = arg;
2924     return parse_option(o, "codec:a", arg, options);
2925 }
2926
2927 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2928 {
2929     video_codec_name = arg;
2930     return parse_option(o, "codec:v", arg, options);
2931 }
2932
2933 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2934 {
2935     subtitle_codec_name = arg;
2936     return parse_option(o, "codec:s", arg, options);
2937 }
2938
2939 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2940 {
2941     return parse_option(o, "codec:d", arg, options);
2942 }
2943
2944 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2945 {
2946     StreamMap *m = NULL;
2947     int i, negative = 0, file_idx;
2948     int sync_file_idx = -1, sync_stream_idx;
2949     char *p, *sync;
2950     char *map;
2951
2952     if (*arg == '-') {
2953         negative = 1;
2954         arg++;
2955     }
2956     map = av_strdup(arg);
2957
2958     /* parse sync stream first, just pick first matching stream */
2959     if (sync = strchr(map, ',')) {
2960         *sync = 0;
2961         sync_file_idx = strtol(sync + 1, &sync, 0);
2962         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2963             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2964             exit_program(1);
2965         }
2966         if (*sync)
2967             sync++;
2968         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2969             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2970                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2971                 sync_stream_idx = i;
2972                 break;
2973             }
2974         if (i == input_files[sync_file_idx].nb_streams) {
2975             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2976                                        "match any streams.\n", arg);
2977             exit_program(1);
2978         }
2979     }
2980
2981
2982     file_idx = strtol(map, &p, 0);
2983     if (file_idx >= nb_input_files || file_idx < 0) {
2984         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2985         exit_program(1);
2986     }
2987     if (negative)
2988         /* disable some already defined maps */
2989         for (i = 0; i < o->nb_stream_maps; i++) {
2990             m = &o->stream_maps[i];
2991             if (file_idx == m->file_index &&
2992                 check_stream_specifier(input_files[m->file_index].ctx,
2993                                        input_files[m->file_index].ctx->streams[m->stream_index],
2994                                        *p == ':' ? p + 1 : p) > 0)
2995                 m->disabled = 1;
2996         }
2997     else
2998         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2999             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3000                         *p == ':' ? p + 1 : p) <= 0)
3001                 continue;
3002             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3003                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3004             m = &o->stream_maps[o->nb_stream_maps - 1];
3005
3006             m->file_index   = file_idx;
3007             m->stream_index = i;
3008
3009             if (sync_file_idx >= 0) {
3010                 m->sync_file_index   = sync_file_idx;
3011                 m->sync_stream_index = sync_stream_idx;
3012             } else {
3013                 m->sync_file_index   = file_idx;
3014                 m->sync_stream_index = i;
3015             }
3016         }
3017
3018     if (!m) {
3019         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3020         exit_program(1);
3021     }
3022
3023     av_freep(&map);
3024     return 0;
3025 }
3026
3027 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3028 {
3029     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3030                                 &o->nb_attachments, o->nb_attachments + 1);
3031     o->attachments[o->nb_attachments - 1] = arg;
3032     return 0;
3033 }
3034
3035 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3036 {
3037     int n;
3038     AVStream *st;
3039     AudioChannelMap *m;
3040
3041     o->audio_channel_maps =
3042         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3043                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3044     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3045
3046     /* muted channel syntax */
3047     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3048     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3049         m->file_idx = m->stream_idx = -1;
3050         if (n == 1)
3051             m->ofile_idx = m->ostream_idx = -1;
3052         return 0;
3053     }
3054
3055     /* normal syntax */
3056     n = sscanf(arg, "%d.%d.%d:%d.%d",
3057                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3058                &m->ofile_idx, &m->ostream_idx);
3059
3060     if (n != 3 && n != 5) {
3061         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3062                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3063         exit_program(1);
3064     }
3065
3066     if (n != 5) // only file.stream.channel specified
3067         m->ofile_idx = m->ostream_idx = -1;
3068
3069     /* check input */
3070     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3071         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3072                m->file_idx);
3073         exit_program(1);
3074     }
3075     if (m->stream_idx < 0 ||
3076         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3077         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3078                m->file_idx, m->stream_idx);
3079         exit_program(1);
3080     }
3081     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3082     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3083         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3084                m->file_idx, m->stream_idx);
3085         exit_program(1);
3086     }
3087     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3088         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3089                m->file_idx, m->stream_idx, m->channel_idx);
3090         exit_program(1);
3091     }
3092     return 0;
3093 }
3094
3095 static void parse_meta_type(char *arg, char *type, int *index)
3096 {
3097     if (*arg) {
3098         *type = *arg;
3099         switch (*arg) {
3100         case 'g':
3101             break;
3102         case 's':
3103         case 'c':
3104         case 'p':
3105             if (*(++arg) == ':')
3106                 *index = strtol(++arg, NULL, 0);
3107             break;
3108         default:
3109             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3110             exit_program(1);
3111         }
3112     } else
3113         *type = 'g';
3114 }
3115
3116 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
3117 {
3118     MetadataMap *m, *m1;
3119     char *p;
3120
3121     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
3122                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
3123
3124     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
3125     m->file = strtol(arg, &p, 0);
3126     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
3127
3128     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
3129     if (p = strchr(opt, ':'))
3130         parse_meta_type(p + 1, &m1->type, &m1->index);
3131     else
3132         m1->type = 'g';
3133
3134     if (m->type == 'g' || m1->type == 'g')
3135         o->metadata_global_manual = 1;
3136     if (m->type == 's' || m1->type == 's')
3137         o->metadata_streams_manual = 1;
3138     if (m->type == 'c' || m1->type == 'c')
3139         o->metadata_chapters_manual = 1;
3140
3141     return 0;
3142 }
3143
3144 static int opt_map_meta_data(OptionsContext *o, const char *opt, const char *arg)
3145 {
3146     av_log(NULL, AV_LOG_WARNING, "-map_meta_data is deprecated and will be removed soon. "
3147                     "Use -map_metadata instead.\n");
3148     return opt_map_metadata(o, opt, arg);
3149 }
3150
3151 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3152 {
3153     char buf[128];
3154     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3155     struct tm time = *gmtime((time_t*)&recording_timestamp);
3156     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3157     parse_option(o, "metadata", buf, options);
3158
3159     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3160                                  "tag instead.\n", opt);
3161     return 0;
3162 }
3163
3164 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3165 {
3166     const char *codec_string = encoder ? "encoder" : "decoder";
3167     AVCodec *codec;
3168
3169     codec = encoder ?
3170         avcodec_find_encoder_by_name(name) :
3171         avcodec_find_decoder_by_name(name);
3172     if(!codec) {
3173         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3174         exit_program(1);
3175     }
3176     if(codec->type != type) {
3177         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3178         exit_program(1);
3179     }
3180     return codec;
3181 }
3182
3183 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3184 {
3185     char *codec_name = NULL;
3186
3187     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3188     if (codec_name) {
3189         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3190         st->codec->codec_id = codec->id;
3191         return codec;
3192     } else
3193         return avcodec_find_decoder(st->codec->codec_id);
3194 }
3195
3196 /**
3197  * Add all the streams from the given input file to the global
3198  * list of input streams.
3199  */
3200 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3201 {
3202     int i, rfps, rfps_base;
3203     char *next, *codec_tag = NULL;
3204
3205     for (i = 0; i < ic->nb_streams; i++) {
3206         AVStream *st = ic->streams[i];
3207         AVCodecContext *dec = st->codec;
3208         InputStream *ist;
3209
3210         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3211         ist = &input_streams[nb_input_streams - 1];
3212         ist->st = st;
3213         ist->file_index = nb_input_files;
3214         ist->discard = 1;
3215         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3216
3217         ist->ts_scale = 1.0;
3218         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3219
3220         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3221         if (codec_tag) {
3222             uint32_t tag = strtol(codec_tag, &next, 0);
3223             if (*next)
3224                 tag = AV_RL32(codec_tag);
3225             st->codec->codec_tag = tag;
3226         }
3227
3228         ist->dec = choose_decoder(o, ic, st);
3229
3230         switch (dec->codec_type) {
3231         case AVMEDIA_TYPE_AUDIO:
3232             if(!ist->dec)
3233                 ist->dec = avcodec_find_decoder(dec->codec_id);
3234             if(o->audio_disable)
3235                 st->discard= AVDISCARD_ALL;
3236             break;
3237         case AVMEDIA_TYPE_VIDEO:
3238             if(!ist->dec)
3239                 ist->dec = avcodec_find_decoder(dec->codec_id);
3240             rfps      = ic->streams[i]->r_frame_rate.num;
3241             rfps_base = ic->streams[i]->r_frame_rate.den;
3242             if (dec->lowres) {
3243                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3244             }
3245
3246             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3247
3248                 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",
3249                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3250                        (float)rfps / rfps_base, rfps, rfps_base);
3251             }
3252
3253             if (o->video_disable)
3254                 st->discard= AVDISCARD_ALL;
3255             else if(video_discard)
3256                 st->discard= video_discard;
3257             break;
3258         case AVMEDIA_TYPE_DATA:
3259             if (o->data_disable)
3260                 st->discard= AVDISCARD_ALL;
3261             break;
3262         case AVMEDIA_TYPE_SUBTITLE:
3263             if(!ist->dec)
3264                 ist->dec = avcodec_find_decoder(dec->codec_id);
3265             if(o->subtitle_disable)
3266                 st->discard = AVDISCARD_ALL;
3267             break;
3268         case AVMEDIA_TYPE_ATTACHMENT:
3269         case AVMEDIA_TYPE_UNKNOWN:
3270             break;
3271         default:
3272             abort();
3273         }
3274     }
3275 }
3276
3277 static void assert_file_overwrite(const char *filename)
3278 {
3279     if ((!file_overwrite || no_file_overwrite) &&
3280         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3281          av_strstart(filename, "file:", NULL))) {
3282         if (avio_check(filename, 0) == 0) {
3283             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3284                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3285                 fflush(stderr);
3286                 term_exit();
3287                 if (!read_yesno()) {
3288                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3289                     exit_program(1);
3290                 }
3291                 term_init();
3292             }
3293             else {
3294                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3295                 exit_program(1);
3296             }
3297         }
3298     }
3299 }
3300
3301 static void dump_attachment(AVStream *st, const char *filename)
3302 {
3303     int ret;
3304     AVIOContext *out = NULL;
3305     AVDictionaryEntry *e;
3306
3307     if (!st->codec->extradata_size) {
3308         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3309                nb_input_files - 1, st->index);
3310         return;
3311     }
3312     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3313         filename = e->value;
3314     if (!*filename) {
3315         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3316                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3317         exit_program(1);
3318     }
3319
3320     assert_file_overwrite(filename);
3321
3322     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3323         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3324                filename);
3325         exit_program(1);
3326     }
3327
3328     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3329     avio_flush(out);
3330     avio_close(out);
3331 }
3332
3333 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3334 {
3335     AVFormatContext *ic;
3336     AVInputFormat *file_iformat = NULL;
3337     int err, i, ret;
3338     int64_t timestamp;
3339     uint8_t buf[128];
3340     AVDictionary **opts;
3341     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3342
3343     if (o->format) {
3344         if (!(file_iformat = av_find_input_format(o->format))) {
3345             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3346             exit_program(1);
3347         }
3348     }
3349
3350     if (!strcmp(filename, "-"))
3351         filename = "pipe:";
3352
3353     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3354                     !strcmp(filename, "/dev/stdin");
3355
3356     /* get default parameters from command line */
3357     ic = avformat_alloc_context();
3358     if (!ic) {
3359         print_error(filename, AVERROR(ENOMEM));
3360         exit_program(1);
3361     }
3362     if (o->nb_audio_sample_rate) {
3363         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3364         av_dict_set(&format_opts, "sample_rate", buf, 0);
3365     }
3366     if (o->nb_audio_channels) {
3367         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3368         av_dict_set(&format_opts, "channels", buf, 0);
3369     }
3370     if (o->nb_frame_rates) {
3371         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3372     }
3373     if (o->nb_frame_sizes) {
3374         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3375     }
3376     if (o->nb_frame_pix_fmts)
3377         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3378
3379     ic->video_codec_id   = video_codec_name ?
3380         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3381     ic->audio_codec_id   = audio_codec_name ?
3382         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3383     ic->subtitle_codec_id= subtitle_codec_name ?
3384         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3385     ic->flags |= AVFMT_FLAG_NONBLOCK;
3386     ic->interrupt_callback = int_cb;
3387
3388     if (loop_input) {
3389         av_log(NULL, AV_LOG_WARNING, "-loop_input is deprecated, use -loop 1\n");
3390         ic->loop_input = loop_input;
3391     }
3392
3393     /* open the input file with generic libav function */
3394     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3395     if (err < 0) {
339