Document audio_resample_close().
[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 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavutil/audioconvert.h"
40 #include "libavutil/parseutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/colorspace.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/intreadwrite.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_TERMIOS_H
73 #include <fcntl.h>
74 #include <sys/ioctl.h>
75 #include <sys/time.h>
76 #include <termios.h>
77 #elif HAVE_CONIO_H
78 #include <conio.h>
79 #endif
80 #include <time.h>
81
82 #include "cmdutils.h"
83
84 #include "libavutil/avassert.h"
85
86 const char program_name[] = "FFmpeg";
87 const int program_birth_year = 2000;
88
89 /* select an input stream for an output stream */
90 typedef struct AVStreamMap {
91     int file_index;
92     int stream_index;
93     int sync_file_index;
94     int sync_stream_index;
95 } AVStreamMap;
96
97 /**
98  * select an input file for an output file
99  */
100 typedef struct AVMetaDataMap {
101     int  file;      //< file index
102     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
103     int  index;     //< stream/chapter/program number
104 } AVMetaDataMap;
105
106 typedef struct AVChapterMap {
107     int in_file;
108     int out_file;
109 } AVChapterMap;
110
111 static const OptionDef options[];
112
113 #define MAX_FILES 100
114 #if !FF_API_MAX_STREAMS
115 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
116 #endif
117
118 static const char *last_asked_format = NULL;
119 static AVFormatContext *input_files[MAX_FILES];
120 static int64_t input_files_ts_offset[MAX_FILES];
121 static double *input_files_ts_scale[MAX_FILES] = {NULL};
122 static AVCodec **input_codecs = NULL;
123 static int nb_input_files = 0;
124 static int nb_input_codecs = 0;
125 static int nb_input_files_ts_scale[MAX_FILES] = {0};
126
127 static AVFormatContext *output_files[MAX_FILES];
128 static AVCodec **output_codecs = NULL;
129 static int nb_output_files = 0;
130 static int nb_output_codecs = 0;
131
132 static AVStreamMap *stream_maps = NULL;
133 static int nb_stream_maps;
134
135 /* first item specifies output metadata, second is input */
136 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
137 static int nb_meta_data_maps;
138 static int metadata_global_autocopy   = 1;
139 static int metadata_streams_autocopy  = 1;
140 static int metadata_chapters_autocopy = 1;
141
142 static AVChapterMap *chapter_maps = NULL;
143 static int nb_chapter_maps;
144
145 /* indexed by output file stream index */
146 static int *streamid_map = NULL;
147 static int nb_streamid_map = 0;
148
149 static int frame_width  = 0;
150 static int frame_height = 0;
151 static float frame_aspect_ratio = 0;
152 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
153 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
154 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
155 static AVRational frame_rate;
156 static float video_qscale = 0;
157 static uint16_t *intra_matrix = NULL;
158 static uint16_t *inter_matrix = NULL;
159 static const char *video_rc_override_string=NULL;
160 static int video_disable = 0;
161 static int video_discard = 0;
162 static char *video_codec_name = NULL;
163 static unsigned int video_codec_tag = 0;
164 static char *video_language = NULL;
165 static int same_quality = 0;
166 static int do_deinterlace = 0;
167 static int top_field_first = -1;
168 static int me_threshold = 0;
169 static int intra_dc_precision = 8;
170 static int loop_input = 0;
171 static int loop_output = AVFMT_NOOUTPUTLOOP;
172 static int qp_hist = 0;
173 #if CONFIG_AVFILTER
174 static char *vfilters = NULL;
175 #endif
176
177 static int intra_only = 0;
178 static int audio_sample_rate = 44100;
179 static int64_t channel_layout = 0;
180 #define QSCALE_NONE -99999
181 static float audio_qscale = QSCALE_NONE;
182 static int audio_disable = 0;
183 static int audio_channels = 1;
184 static char  *audio_codec_name = NULL;
185 static unsigned int audio_codec_tag = 0;
186 static char *audio_language = NULL;
187
188 static int subtitle_disable = 0;
189 static char *subtitle_codec_name = NULL;
190 static char *subtitle_language = NULL;
191 static unsigned int subtitle_codec_tag = 0;
192
193 static float mux_preload= 0.5;
194 static float mux_max_delay= 0.7;
195
196 static int64_t recording_time = INT64_MAX;
197 static int64_t start_time = 0;
198 static int64_t recording_timestamp = 0;
199 static int64_t input_ts_offset = 0;
200 static int file_overwrite = 0;
201 static AVMetadata *metadata;
202 static int do_benchmark = 0;
203 static int do_hex_dump = 0;
204 static int do_pkt_dump = 0;
205 static int do_psnr = 0;
206 static int do_pass = 0;
207 static char *pass_logfilename_prefix = NULL;
208 static int audio_stream_copy = 0;
209 static int video_stream_copy = 0;
210 static int subtitle_stream_copy = 0;
211 static int video_sync_method= -1;
212 static int audio_sync_method= 0;
213 static float audio_drift_threshold= 0.1;
214 static int copy_ts= 0;
215 static int copy_tb;
216 static int opt_shortest = 0;
217 static int video_global_header = 0;
218 static char *vstats_filename;
219 static FILE *vstats_file;
220 static int opt_programid = 0;
221 static int copy_initial_nonkeyframes = 0;
222
223 static int rate_emu = 0;
224
225 static int  video_channel = 0;
226 static char *video_standard;
227
228 static int audio_volume = 256;
229
230 static int exit_on_error = 0;
231 static int using_stdin = 0;
232 static int verbose = 1;
233 static int thread_count= 1;
234 static int q_pressed = 0;
235 static int64_t video_size = 0;
236 static int64_t audio_size = 0;
237 static int64_t extra_size = 0;
238 static int nb_frames_dup = 0;
239 static int nb_frames_drop = 0;
240 static int input_sync;
241 static uint64_t limit_filesize = 0;
242 static int force_fps = 0;
243 static char *forced_key_frames = NULL;
244
245 static float dts_delta_threshold = 10;
246
247 static unsigned int sws_flags = SWS_BICUBIC;
248
249 static int64_t timer_start;
250
251 static uint8_t *audio_buf;
252 static uint8_t *audio_out;
253 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
254
255 static short *samples;
256
257 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
258 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
259 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
260
261 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
262
263 struct AVInputStream;
264
265 typedef struct AVOutputStream {
266     int file_index;          /* file index */
267     int index;               /* stream index in the output file */
268     int source_index;        /* AVInputStream index */
269     AVStream *st;            /* stream in the output file */
270     int encoding_needed;     /* true if encoding needed for this stream */
271     int frame_number;
272     /* input pts and corresponding output pts
273        for A/V sync */
274     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
275     struct AVInputStream *sync_ist; /* input stream to sync against */
276     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
277     AVBitStreamFilterContext *bitstream_filters;
278     /* video only */
279     int video_resample;
280     AVFrame pict_tmp;      /* temporary image for resampling */
281     struct SwsContext *img_resample_ctx; /* for image resampling */
282     int resample_height;
283     int resample_width;
284     int resample_pix_fmt;
285
286     /* full frame size of first frame */
287     int original_height;
288     int original_width;
289
290     /* forced key frames */
291     int64_t *forced_kf_pts;
292     int forced_kf_count;
293     int forced_kf_index;
294
295     /* audio only */
296     int audio_resample;
297     ReSampleContext *resample; /* for audio resampling */
298     int resample_sample_fmt;
299     int resample_channels;
300     int resample_sample_rate;
301     int reformat_pair;
302     AVAudioConvert *reformat_ctx;
303     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
304     FILE *logfile;
305
306 #if CONFIG_AVFILTER
307     AVFilterContext *output_video_filter;
308     AVFilterContext *input_video_filter;
309     AVFilterBufferRef *picref;
310     char *avfilter;
311     AVFilterGraph *graph;
312 #endif
313 } AVOutputStream;
314
315 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
316 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
317
318 typedef struct AVInputStream {
319     int file_index;
320     int index;
321     AVStream *st;
322     int discard;             /* true if stream data should be discarded */
323     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
324     int64_t sample_index;      /* current sample */
325
326     int64_t       start;     /* time when read started */
327     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
328                                 is not defined */
329     int64_t       pts;       /* current pts */
330     int is_start;            /* is 1 at the start and after a discontinuity */
331     int showed_multi_packet_warning;
332     int is_past_recording_time;
333 #if CONFIG_AVFILTER
334     AVFrame *filter_frame;
335     int has_filter_frame;
336 #endif
337 } AVInputStream;
338
339 typedef struct AVInputFile {
340     int eof_reached;      /* true if eof reached */
341     int ist_index;        /* index of first stream in ist_table */
342     int buffer_size;      /* current total buffer size */
343     int nb_streams;       /* nb streams we are aware of */
344 } AVInputFile;
345
346 #if HAVE_TERMIOS_H
347
348 /* init terminal so that we can grab keys */
349 static struct termios oldtty;
350 #endif
351
352 #if CONFIG_AVFILTER
353
354 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
355 {
356     AVFilterContext *last_filter, *filter;
357     /** filter graph containing all filters including input & output */
358     AVCodecContext *codec = ost->st->codec;
359     AVCodecContext *icodec = ist->st->codec;
360     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
361     AVRational sample_aspect_ratio;
362     char args[255];
363     int ret;
364
365     ost->graph = avfilter_graph_alloc();
366
367     if (ist->st->sample_aspect_ratio.num){
368         sample_aspect_ratio = ist->st->sample_aspect_ratio;
369     }else
370         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
371
372     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
373              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
374              sample_aspect_ratio.num, sample_aspect_ratio.den);
375
376     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
377                                        "src", args, NULL, ost->graph);
378     if (ret < 0)
379         return ret;
380     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
381                                        "out", NULL, &ffsink_ctx, ost->graph);
382     if (ret < 0)
383         return ret;
384     last_filter = ost->input_video_filter;
385
386     if (codec->width  != icodec->width || codec->height != icodec->height) {
387         snprintf(args, 255, "%d:%d:flags=0x%X",
388                  codec->width,
389                  codec->height,
390                  (int)av_get_int(sws_opts, "sws_flags", NULL));
391         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
392                                                 NULL, args, NULL, ost->graph)) < 0)
393             return ret;
394         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
395             return ret;
396         last_filter = filter;
397     }
398
399     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
400     ost->graph->scale_sws_opts = av_strdup(args);
401
402     if (ost->avfilter) {
403         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
404         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
405
406         outputs->name    = av_strdup("in");
407         outputs->filter_ctx = last_filter;
408         outputs->pad_idx = 0;
409         outputs->next    = NULL;
410
411         inputs->name    = av_strdup("out");
412         inputs->filter_ctx = ost->output_video_filter;
413         inputs->pad_idx = 0;
414         inputs->next    = NULL;
415
416         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
417             return ret;
418         av_freep(&ost->avfilter);
419     } else {
420         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
421             return ret;
422     }
423
424     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
425         return ret;
426
427     codec->width  = ost->output_video_filter->inputs[0]->w;
428     codec->height = ost->output_video_filter->inputs[0]->h;
429     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
430         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
431
432     return 0;
433 }
434 #endif /* CONFIG_AVFILTER */
435
436 static void term_exit(void)
437 {
438     av_log(NULL, AV_LOG_QUIET, "");
439 #if HAVE_TERMIOS_H
440     tcsetattr (0, TCSANOW, &oldtty);
441 #endif
442 }
443
444 static volatile int received_sigterm = 0;
445
446 static void
447 sigterm_handler(int sig)
448 {
449     received_sigterm = sig;
450     term_exit();
451 }
452
453 static void term_init(void)
454 {
455 #if HAVE_TERMIOS_H
456     struct termios tty;
457
458     tcgetattr (0, &tty);
459     oldtty = tty;
460     atexit(term_exit);
461
462     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
463                           |INLCR|IGNCR|ICRNL|IXON);
464     tty.c_oflag |= OPOST;
465     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
466     tty.c_cflag &= ~(CSIZE|PARENB);
467     tty.c_cflag |= CS8;
468     tty.c_cc[VMIN] = 1;
469     tty.c_cc[VTIME] = 0;
470
471     tcsetattr (0, TCSANOW, &tty);
472     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
473 #endif
474
475     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
476     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
477 #ifdef SIGXCPU
478     signal(SIGXCPU, sigterm_handler);
479 #endif
480 }
481
482 /* read a key without blocking */
483 static int read_key(void)
484 {
485 #if HAVE_TERMIOS_H
486     int n = 1;
487     unsigned char ch;
488     struct timeval tv;
489     fd_set rfds;
490
491     FD_ZERO(&rfds);
492     FD_SET(0, &rfds);
493     tv.tv_sec = 0;
494     tv.tv_usec = 0;
495     n = select(1, &rfds, NULL, NULL, &tv);
496     if (n > 0) {
497         n = read(0, &ch, 1);
498         if (n == 1)
499             return ch;
500
501         return n;
502     }
503 #elif HAVE_CONIO_H
504     if(kbhit())
505         return(getch());
506 #endif
507     return -1;
508 }
509
510 static int decode_interrupt_cb(void)
511 {
512     return q_pressed || (q_pressed = read_key() == 'q');
513 }
514
515 static int ffmpeg_exit(int ret)
516 {
517     int i;
518
519     /* close files */
520     for(i=0;i<nb_output_files;i++) {
521         AVFormatContext *s = output_files[i];
522         int j;
523         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
524             url_fclose(s->pb);
525         avformat_free_context(s);
526         av_free(output_streams_for_file[i]);
527     }
528     for(i=0;i<nb_input_files;i++) {
529         av_close_input_file(input_files[i]);
530         av_free(input_files_ts_scale[i]);
531     }
532
533     av_free(intra_matrix);
534     av_free(inter_matrix);
535
536     if (vstats_file)
537         fclose(vstats_file);
538     av_free(vstats_filename);
539
540     av_free(streamid_map);
541     av_free(input_codecs);
542     av_free(output_codecs);
543     av_free(stream_maps);
544     av_free(meta_data_maps);
545
546     av_free(video_codec_name);
547     av_free(audio_codec_name);
548     av_free(subtitle_codec_name);
549
550     av_free(video_standard);
551
552     uninit_opts();
553     av_free(audio_buf);
554     av_free(audio_out);
555     allocated_audio_buf_size= allocated_audio_out_size= 0;
556     av_free(samples);
557
558 #if CONFIG_AVFILTER
559     avfilter_uninit();
560 #endif
561
562     if (received_sigterm) {
563         fprintf(stderr,
564             "Received signal %d: terminating.\n",
565             (int) received_sigterm);
566         exit (255);
567     }
568
569     exit(ret); /* not all OS-es handle main() return value */
570     return ret;
571 }
572
573 /* similar to ff_dynarray_add() and av_fast_realloc() */
574 static void *grow_array(void *array, int elem_size, int *size, int new_size)
575 {
576     if (new_size >= INT_MAX / elem_size) {
577         fprintf(stderr, "Array too big.\n");
578         ffmpeg_exit(1);
579     }
580     if (*size < new_size) {
581         uint8_t *tmp = av_realloc(array, new_size*elem_size);
582         if (!tmp) {
583             fprintf(stderr, "Could not alloc buffer.\n");
584             ffmpeg_exit(1);
585         }
586         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
587         *size = new_size;
588         return tmp;
589     }
590     return array;
591 }
592
593 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
594 {
595     if(codec && codec->sample_fmts){
596         const enum AVSampleFormat *p= codec->sample_fmts;
597         for(; *p!=-1; p++){
598             if(*p == st->codec->sample_fmt)
599                 break;
600         }
601         if (*p == -1) {
602             av_log(NULL, AV_LOG_WARNING,
603                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
604                    av_get_sample_fmt_name(st->codec->sample_fmt),
605                    codec->name,
606                    av_get_sample_fmt_name(codec->sample_fmts[0]));
607             st->codec->sample_fmt = codec->sample_fmts[0];
608         }
609     }
610 }
611
612 static void choose_sample_rate(AVStream *st, AVCodec *codec)
613 {
614     if(codec && codec->supported_samplerates){
615         const int *p= codec->supported_samplerates;
616         int best=0;
617         int best_dist=INT_MAX;
618         for(; *p; p++){
619             int dist= abs(st->codec->sample_rate - *p);
620             if(dist < best_dist){
621                 best_dist= dist;
622                 best= *p;
623             }
624         }
625         if(best_dist){
626             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
627         }
628         st->codec->sample_rate= best;
629     }
630 }
631
632 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
633 {
634     if(codec && codec->pix_fmts){
635         const enum PixelFormat *p= codec->pix_fmts;
636         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
637             if(st->codec->codec_id==CODEC_ID_MJPEG){
638                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
639             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
640                 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};
641             }
642         }
643         for(; *p!=-1; p++){
644             if(*p == st->codec->pix_fmt)
645                 break;
646         }
647         if(*p == -1)
648             st->codec->pix_fmt = codec->pix_fmts[0];
649     }
650 }
651
652 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
653 {
654     int idx = oc->nb_streams - 1;
655     AVOutputStream *ost;
656
657     output_streams_for_file[file_idx] =
658         grow_array(output_streams_for_file[file_idx],
659                    sizeof(*output_streams_for_file[file_idx]),
660                    &nb_output_streams_for_file[file_idx],
661                    oc->nb_streams);
662     ost = output_streams_for_file[file_idx][idx] =
663         av_mallocz(sizeof(AVOutputStream));
664     if (!ost) {
665         fprintf(stderr, "Could not alloc output stream\n");
666         ffmpeg_exit(1);
667     }
668     ost->file_index = file_idx;
669     ost->index = idx;
670     return ost;
671 }
672
673 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
674 {
675     int i, err;
676     AVFormatContext *ic;
677     int nopts = 0;
678
679     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
680     if (err < 0)
681         return err;
682     /* copy stream format */
683     s->nb_streams = 0;
684     for(i=0;i<ic->nb_streams;i++) {
685         AVStream *st;
686         AVCodec *codec;
687
688         s->nb_streams++;
689
690         // FIXME: a more elegant solution is needed
691         st = av_mallocz(sizeof(AVStream));
692         memcpy(st, ic->streams[i], sizeof(AVStream));
693         st->codec = avcodec_alloc_context();
694         if (!st->codec) {
695             print_error(filename, AVERROR(ENOMEM));
696             ffmpeg_exit(1);
697         }
698         avcodec_copy_context(st->codec, ic->streams[i]->codec);
699         s->streams[i] = st;
700
701         codec = avcodec_find_encoder(st->codec->codec_id);
702         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
703             if (audio_stream_copy) {
704                 st->stream_copy = 1;
705             } else
706                 choose_sample_fmt(st, codec);
707         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
708             if (video_stream_copy) {
709                 st->stream_copy = 1;
710             } else
711                 choose_pixel_fmt(st, codec);
712         }
713
714         if(st->codec->flags & CODEC_FLAG_BITEXACT)
715             nopts = 1;
716
717         new_output_stream(s, nb_output_files);
718     }
719
720     if (!nopts)
721         s->timestamp = av_gettime();
722
723     av_close_input_file(ic);
724     return 0;
725 }
726
727 static double
728 get_sync_ipts(const AVOutputStream *ost)
729 {
730     const AVInputStream *ist = ost->sync_ist;
731     return (double)(ist->pts - start_time)/AV_TIME_BASE;
732 }
733
734 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
735     int ret;
736
737     while(bsfc){
738         AVPacket new_pkt= *pkt;
739         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
740                                           &new_pkt.data, &new_pkt.size,
741                                           pkt->data, pkt->size,
742                                           pkt->flags & AV_PKT_FLAG_KEY);
743         if(a>0){
744             av_free_packet(pkt);
745             new_pkt.destruct= av_destruct_packet;
746         } else if(a<0){
747             fprintf(stderr, "%s failed for stream %d, codec %s",
748                     bsfc->filter->name, pkt->stream_index,
749                     avctx->codec ? avctx->codec->name : "copy");
750             print_error("", a);
751             if (exit_on_error)
752                 ffmpeg_exit(1);
753         }
754         *pkt= new_pkt;
755
756         bsfc= bsfc->next;
757     }
758
759     ret= av_interleaved_write_frame(s, pkt);
760     if(ret < 0){
761         print_error("av_interleaved_write_frame()", ret);
762         ffmpeg_exit(1);
763     }
764 }
765
766 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
767
768 static void do_audio_out(AVFormatContext *s,
769                          AVOutputStream *ost,
770                          AVInputStream *ist,
771                          unsigned char *buf, int size)
772 {
773     uint8_t *buftmp;
774     int64_t audio_out_size, audio_buf_size;
775     int64_t allocated_for_size= size;
776
777     int size_out, frame_bytes, ret, resample_changed;
778     AVCodecContext *enc= ost->st->codec;
779     AVCodecContext *dec= ist->st->codec;
780     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
781     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
782     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
783
784 need_realloc:
785     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
786     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
787     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
788     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
789     audio_buf_size*= osize*enc->channels;
790
791     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
792     if(coded_bps > 8*osize)
793         audio_out_size= audio_out_size * coded_bps / (8*osize);
794     audio_out_size += FF_MIN_BUFFER_SIZE;
795
796     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
797         fprintf(stderr, "Buffer sizes too large\n");
798         ffmpeg_exit(1);
799     }
800
801     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
802     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
803     if (!audio_buf || !audio_out){
804         fprintf(stderr, "Out of memory in do_audio_out\n");
805         ffmpeg_exit(1);
806     }
807
808     if (enc->channels != dec->channels)
809         ost->audio_resample = 1;
810
811     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
812                        ost->resample_channels    != dec->channels   ||
813                        ost->resample_sample_rate != dec->sample_rate;
814
815     if ((ost->audio_resample && !ost->resample) || resample_changed) {
816         if (resample_changed) {
817             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",
818                    ist->file_index, ist->index,
819                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
820                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
821             ost->resample_sample_fmt  = dec->sample_fmt;
822             ost->resample_channels    = dec->channels;
823             ost->resample_sample_rate = dec->sample_rate;
824             if (ost->resample)
825                 audio_resample_close(ost->resample);
826         }
827         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
828         if (audio_sync_method <= 1 &&
829             ost->resample_sample_fmt  == enc->sample_fmt &&
830             ost->resample_channels    == enc->channels   &&
831             ost->resample_sample_rate == enc->sample_rate) {
832             ost->resample = NULL;
833             ost->audio_resample = 0;
834         } else {
835             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
836                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
837             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
838                                                    enc->sample_rate, dec->sample_rate,
839                                                    enc->sample_fmt,  dec->sample_fmt,
840                                                    16, 10, 0, 0.8);
841             if (!ost->resample) {
842                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
843                         dec->channels, dec->sample_rate,
844                         enc->channels, enc->sample_rate);
845                 ffmpeg_exit(1);
846             }
847         }
848     }
849
850 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
851     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
852         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
853         if (ost->reformat_ctx)
854             av_audio_convert_free(ost->reformat_ctx);
855         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
856                                                    dec->sample_fmt, 1, NULL, 0);
857         if (!ost->reformat_ctx) {
858             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
859                 av_get_sample_fmt_name(dec->sample_fmt),
860                 av_get_sample_fmt_name(enc->sample_fmt));
861             ffmpeg_exit(1);
862         }
863         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
864     }
865
866     if(audio_sync_method){
867         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
868                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
869         double idelta= delta*dec->sample_rate / enc->sample_rate;
870         int byte_delta= ((int)idelta)*2*dec->channels;
871
872         //FIXME resample delay
873         if(fabs(delta) > 50){
874             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
875                 if(byte_delta < 0){
876                     byte_delta= FFMAX(byte_delta, -size);
877                     size += byte_delta;
878                     buf  -= byte_delta;
879                     if(verbose > 2)
880                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
881                     if(!size)
882                         return;
883                     ist->is_start=0;
884                 }else{
885                     static uint8_t *input_tmp= NULL;
886                     input_tmp= av_realloc(input_tmp, byte_delta + size);
887
888                     if(byte_delta > allocated_for_size - size){
889                         allocated_for_size= byte_delta + (int64_t)size;
890                         goto need_realloc;
891                     }
892                     ist->is_start=0;
893
894                     memset(input_tmp, 0, byte_delta);
895                     memcpy(input_tmp + byte_delta, buf, size);
896                     buf= input_tmp;
897                     size += byte_delta;
898                     if(verbose > 2)
899                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
900                 }
901             }else if(audio_sync_method>1){
902                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
903                 av_assert0(ost->audio_resample);
904                 if(verbose > 2)
905                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
906 //                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));
907                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
908             }
909         }
910     }else
911         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
912                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
913
914     if (ost->audio_resample) {
915         buftmp = audio_buf;
916         size_out = audio_resample(ost->resample,
917                                   (short *)buftmp, (short *)buf,
918                                   size / (dec->channels * isize));
919         size_out = size_out * enc->channels * osize;
920     } else {
921         buftmp = buf;
922         size_out = size;
923     }
924
925     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
926         const void *ibuf[6]= {buftmp};
927         void *obuf[6]= {audio_buf};
928         int istride[6]= {isize};
929         int ostride[6]= {osize};
930         int len= size_out/istride[0];
931         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
932             printf("av_audio_convert() failed\n");
933             if (exit_on_error)
934                 ffmpeg_exit(1);
935             return;
936         }
937         buftmp = audio_buf;
938         size_out = len*osize;
939     }
940
941     /* now encode as many frames as possible */
942     if (enc->frame_size > 1) {
943         /* output resampled raw samples */
944         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
945             fprintf(stderr, "av_fifo_realloc2() failed\n");
946             ffmpeg_exit(1);
947         }
948         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
949
950         frame_bytes = enc->frame_size * osize * enc->channels;
951
952         while (av_fifo_size(ost->fifo) >= frame_bytes) {
953             AVPacket pkt;
954             av_init_packet(&pkt);
955
956             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
957
958             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
959
960             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
961                                        (short *)audio_buf);
962             if (ret < 0) {
963                 fprintf(stderr, "Audio encoding failed\n");
964                 ffmpeg_exit(1);
965             }
966             audio_size += ret;
967             pkt.stream_index= ost->index;
968             pkt.data= audio_out;
969             pkt.size= ret;
970             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
971                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
972             pkt.flags |= AV_PKT_FLAG_KEY;
973             write_frame(s, &pkt, enc, ost->bitstream_filters);
974
975             ost->sync_opts += enc->frame_size;
976         }
977     } else {
978         AVPacket pkt;
979         av_init_packet(&pkt);
980
981         ost->sync_opts += size_out / (osize * enc->channels);
982
983         /* output a pcm frame */
984         /* determine the size of the coded buffer */
985         size_out /= osize;
986         if (coded_bps)
987             size_out = size_out*coded_bps/8;
988
989         if(size_out > audio_out_size){
990             fprintf(stderr, "Internal error, buffer size too small\n");
991             ffmpeg_exit(1);
992         }
993
994         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
995         ret = avcodec_encode_audio(enc, audio_out, size_out,
996                                    (short *)buftmp);
997         if (ret < 0) {
998             fprintf(stderr, "Audio encoding failed\n");
999             ffmpeg_exit(1);
1000         }
1001         audio_size += ret;
1002         pkt.stream_index= ost->index;
1003         pkt.data= audio_out;
1004         pkt.size= ret;
1005         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1006             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1007         pkt.flags |= AV_PKT_FLAG_KEY;
1008         write_frame(s, &pkt, enc, ost->bitstream_filters);
1009     }
1010 }
1011
1012 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1013 {
1014     AVCodecContext *dec;
1015     AVPicture *picture2;
1016     AVPicture picture_tmp;
1017     uint8_t *buf = 0;
1018
1019     dec = ist->st->codec;
1020
1021     /* deinterlace : must be done before any resize */
1022     if (do_deinterlace) {
1023         int size;
1024
1025         /* create temporary picture */
1026         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1027         buf = av_malloc(size);
1028         if (!buf)
1029             return;
1030
1031         picture2 = &picture_tmp;
1032         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1033
1034         if(avpicture_deinterlace(picture2, picture,
1035                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1036             /* if error, do not deinterlace */
1037             fprintf(stderr, "Deinterlacing failed\n");
1038             av_free(buf);
1039             buf = NULL;
1040             picture2 = picture;
1041         }
1042     } else {
1043         picture2 = picture;
1044     }
1045
1046     if (picture != picture2)
1047         *picture = *picture2;
1048     *bufp = buf;
1049 }
1050
1051 /* we begin to correct av delay at this threshold */
1052 #define AV_DELAY_MAX 0.100
1053
1054 static void do_subtitle_out(AVFormatContext *s,
1055                             AVOutputStream *ost,
1056                             AVInputStream *ist,
1057                             AVSubtitle *sub,
1058                             int64_t pts)
1059 {
1060     static uint8_t *subtitle_out = NULL;
1061     int subtitle_out_max_size = 1024 * 1024;
1062     int subtitle_out_size, nb, i;
1063     AVCodecContext *enc;
1064     AVPacket pkt;
1065
1066     if (pts == AV_NOPTS_VALUE) {
1067         fprintf(stderr, "Subtitle packets must have a pts\n");
1068         if (exit_on_error)
1069             ffmpeg_exit(1);
1070         return;
1071     }
1072
1073     enc = ost->st->codec;
1074
1075     if (!subtitle_out) {
1076         subtitle_out = av_malloc(subtitle_out_max_size);
1077     }
1078
1079     /* Note: DVB subtitle need one packet to draw them and one other
1080        packet to clear them */
1081     /* XXX: signal it in the codec context ? */
1082     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1083         nb = 2;
1084     else
1085         nb = 1;
1086
1087     for(i = 0; i < nb; i++) {
1088         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1089         // start_display_time is required to be 0
1090         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1091         sub->end_display_time -= sub->start_display_time;
1092         sub->start_display_time = 0;
1093         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1094                                                     subtitle_out_max_size, sub);
1095         if (subtitle_out_size < 0) {
1096             fprintf(stderr, "Subtitle encoding failed\n");
1097             ffmpeg_exit(1);
1098         }
1099
1100         av_init_packet(&pkt);
1101         pkt.stream_index = ost->index;
1102         pkt.data = subtitle_out;
1103         pkt.size = subtitle_out_size;
1104         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1105         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1106             /* XXX: the pts correction is handled here. Maybe handling
1107                it in the codec would be better */
1108             if (i == 0)
1109                 pkt.pts += 90 * sub->start_display_time;
1110             else
1111                 pkt.pts += 90 * sub->end_display_time;
1112         }
1113         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1114     }
1115 }
1116
1117 static int bit_buffer_size= 1024*256;
1118 static uint8_t *bit_buffer= NULL;
1119
1120 static void do_video_out(AVFormatContext *s,
1121                          AVOutputStream *ost,
1122                          AVInputStream *ist,
1123                          AVFrame *in_picture,
1124                          int *frame_size)
1125 {
1126     int nb_frames, i, ret;
1127     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1128     AVCodecContext *enc, *dec;
1129     double sync_ipts;
1130
1131     enc = ost->st->codec;
1132     dec = ist->st->codec;
1133
1134     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1135
1136     /* by default, we output a single frame */
1137     nb_frames = 1;
1138
1139     *frame_size = 0;
1140
1141     if(video_sync_method){
1142         double vdelta = sync_ipts - ost->sync_opts;
1143         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1144         if (vdelta < -1.1)
1145             nb_frames = 0;
1146         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1147             if(vdelta<=-0.6){
1148                 nb_frames=0;
1149             }else if(vdelta>0.6)
1150                 ost->sync_opts= lrintf(sync_ipts);
1151         }else if (vdelta > 1.1)
1152             nb_frames = lrintf(vdelta);
1153 //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);
1154         if (nb_frames == 0){
1155             ++nb_frames_drop;
1156             if (verbose>2)
1157                 fprintf(stderr, "*** drop!\n");
1158         }else if (nb_frames > 1) {
1159             nb_frames_dup += nb_frames - 1;
1160             if (verbose>2)
1161                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1162         }
1163     }else
1164         ost->sync_opts= lrintf(sync_ipts);
1165
1166     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1167     if (nb_frames <= 0)
1168         return;
1169
1170     formatted_picture = in_picture;
1171     final_picture = formatted_picture;
1172     padding_src = formatted_picture;
1173     resampling_dst = &ost->pict_tmp;
1174
1175     if (   ost->resample_height != ist->st->codec->height
1176         || ost->resample_width  != ist->st->codec->width
1177         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1178
1179         fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width,     ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
1180         if(!ost->video_resample)
1181             ffmpeg_exit(1);
1182     }
1183
1184 #if !CONFIG_AVFILTER
1185     if (ost->video_resample) {
1186         padding_src = NULL;
1187         final_picture = &ost->pict_tmp;
1188         if(  ost->resample_height != ist->st->codec->height
1189           || ost->resample_width  != ist->st->codec->width
1190           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1191
1192             /* initialize a new scaler context */
1193             sws_freeContext(ost->img_resample_ctx);
1194             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1195             ost->img_resample_ctx = sws_getContext(
1196                 ist->st->codec->width,
1197                 ist->st->codec->height,
1198                 ist->st->codec->pix_fmt,
1199                 ost->st->codec->width,
1200                 ost->st->codec->height,
1201                 ost->st->codec->pix_fmt,
1202                 sws_flags, NULL, NULL, NULL);
1203             if (ost->img_resample_ctx == NULL) {
1204                 fprintf(stderr, "Cannot get resampling context\n");
1205                 ffmpeg_exit(1);
1206             }
1207         }
1208         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1209               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1210     }
1211 #endif
1212
1213     /* duplicates frame if needed */
1214     for(i=0;i<nb_frames;i++) {
1215         AVPacket pkt;
1216         av_init_packet(&pkt);
1217         pkt.stream_index= ost->index;
1218
1219         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1220             /* raw pictures are written as AVPicture structure to
1221                avoid any copies. We support temorarily the older
1222                method. */
1223             AVFrame* old_frame = enc->coded_frame;
1224             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1225             pkt.data= (uint8_t *)final_picture;
1226             pkt.size=  sizeof(AVPicture);
1227             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1228             pkt.flags |= AV_PKT_FLAG_KEY;
1229
1230             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1231             enc->coded_frame = old_frame;
1232         } else {
1233             AVFrame big_picture;
1234
1235             big_picture= *final_picture;
1236             /* better than nothing: use input picture interlaced
1237                settings */
1238             big_picture.interlaced_frame = in_picture->interlaced_frame;
1239             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1240                 if(top_field_first == -1)
1241                     big_picture.top_field_first = in_picture->top_field_first;
1242                 else
1243                     big_picture.top_field_first = top_field_first;
1244             }
1245
1246             /* handles sameq here. This is not correct because it may
1247                not be a global option */
1248             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1249             if(!me_threshold)
1250                 big_picture.pict_type = 0;
1251 //            big_picture.pts = AV_NOPTS_VALUE;
1252             big_picture.pts= ost->sync_opts;
1253 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1254 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1255             if (ost->forced_kf_index < ost->forced_kf_count &&
1256                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1257                 big_picture.pict_type = FF_I_TYPE;
1258                 ost->forced_kf_index++;
1259             }
1260             ret = avcodec_encode_video(enc,
1261                                        bit_buffer, bit_buffer_size,
1262                                        &big_picture);
1263             if (ret < 0) {
1264                 fprintf(stderr, "Video encoding failed\n");
1265                 ffmpeg_exit(1);
1266             }
1267
1268             if(ret>0){
1269                 pkt.data= bit_buffer;
1270                 pkt.size= ret;
1271                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1272                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1273 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1274    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1275    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1276
1277                 if(enc->coded_frame->key_frame)
1278                     pkt.flags |= AV_PKT_FLAG_KEY;
1279                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1280                 *frame_size = ret;
1281                 video_size += ret;
1282                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1283                 //        enc->frame_number-1, ret, enc->pict_type);
1284                 /* if two pass, output log */
1285                 if (ost->logfile && enc->stats_out) {
1286                     fprintf(ost->logfile, "%s", enc->stats_out);
1287                 }
1288             }
1289         }
1290         ost->sync_opts++;
1291         ost->frame_number++;
1292     }
1293 }
1294
1295 static double psnr(double d){
1296     return -10.0*log(d)/log(10.0);
1297 }
1298
1299 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1300                            int frame_size)
1301 {
1302     AVCodecContext *enc;
1303     int frame_number;
1304     double ti1, bitrate, avg_bitrate;
1305
1306     /* this is executed just the first time do_video_stats is called */
1307     if (!vstats_file) {
1308         vstats_file = fopen(vstats_filename, "w");
1309         if (!vstats_file) {
1310             perror("fopen");
1311             ffmpeg_exit(1);
1312         }
1313     }
1314
1315     enc = ost->st->codec;
1316     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1317         frame_number = ost->frame_number;
1318         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1319         if (enc->flags&CODEC_FLAG_PSNR)
1320             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1321
1322         fprintf(vstats_file,"f_size= %6d ", frame_size);
1323         /* compute pts value */
1324         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1325         if (ti1 < 0.01)
1326             ti1 = 0.01;
1327
1328         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1329         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1330         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1331             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1332         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1333     }
1334 }
1335
1336 static void print_report(AVFormatContext **output_files,
1337                          AVOutputStream **ost_table, int nb_ostreams,
1338                          int is_last_report)
1339 {
1340     char buf[1024];
1341     AVOutputStream *ost;
1342     AVFormatContext *oc;
1343     int64_t total_size;
1344     AVCodecContext *enc;
1345     int frame_number, vid, i;
1346     double bitrate, ti1, pts;
1347     static int64_t last_time = -1;
1348     static int qp_histogram[52];
1349
1350     if (!is_last_report) {
1351         int64_t cur_time;
1352         /* display the report every 0.5 seconds */
1353         cur_time = av_gettime();
1354         if (last_time == -1) {
1355             last_time = cur_time;
1356             return;
1357         }
1358         if ((cur_time - last_time) < 500000)
1359             return;
1360         last_time = cur_time;
1361     }
1362
1363
1364     oc = output_files[0];
1365
1366     total_size = url_fsize(oc->pb);
1367     if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1368         total_size= url_ftell(oc->pb);
1369
1370     buf[0] = '\0';
1371     ti1 = 1e10;
1372     vid = 0;
1373     for(i=0;i<nb_ostreams;i++) {
1374         ost = ost_table[i];
1375         enc = ost->st->codec;
1376         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1377             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1378                      !ost->st->stream_copy ?
1379                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1380         }
1381         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1382             float t = (av_gettime()-timer_start) / 1000000.0;
1383
1384             frame_number = ost->frame_number;
1385             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1386                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1387                      !ost->st->stream_copy ?
1388                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1389             if(is_last_report)
1390                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1391             if(qp_hist){
1392                 int j;
1393                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1394                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1395                     qp_histogram[qp]++;
1396                 for(j=0; j<32; j++)
1397                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1398             }
1399             if (enc->flags&CODEC_FLAG_PSNR){
1400                 int j;
1401                 double error, error_sum=0;
1402                 double scale, scale_sum=0;
1403                 char type[3]= {'Y','U','V'};
1404                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1405                 for(j=0; j<3; j++){
1406                     if(is_last_report){
1407                         error= enc->error[j];
1408                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1409                     }else{
1410                         error= enc->coded_frame->error[j];
1411                         scale= enc->width*enc->height*255.0*255.0;
1412                     }
1413                     if(j) scale/=4;
1414                     error_sum += error;
1415                     scale_sum += scale;
1416                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1417                 }
1418                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1419             }
1420             vid = 1;
1421         }
1422         /* compute min output value */
1423         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1424         if ((pts < ti1) && (pts > 0))
1425             ti1 = pts;
1426     }
1427     if (ti1 < 0.01)
1428         ti1 = 0.01;
1429
1430     if (verbose || is_last_report) {
1431         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1432
1433         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1434             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1435             (double)total_size / 1024, ti1, bitrate);
1436
1437         if (nb_frames_dup || nb_frames_drop)
1438           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1439                   nb_frames_dup, nb_frames_drop);
1440
1441         if (verbose >= 0)
1442             fprintf(stderr, "%s    \r", buf);
1443
1444         fflush(stderr);
1445     }
1446
1447     if (is_last_report && verbose >= 0){
1448         int64_t raw= audio_size + video_size + extra_size;
1449         fprintf(stderr, "\n");
1450         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1451                 video_size/1024.0,
1452                 audio_size/1024.0,
1453                 extra_size/1024.0,
1454                 100.0*(total_size - raw)/raw
1455         );
1456     }
1457 }
1458
1459 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1460 static int output_packet(AVInputStream *ist, int ist_index,
1461                          AVOutputStream **ost_table, int nb_ostreams,
1462                          const AVPacket *pkt)
1463 {
1464     AVFormatContext *os;
1465     AVOutputStream *ost;
1466     int ret, i;
1467     int got_picture;
1468     AVFrame picture;
1469     void *buffer_to_free;
1470     static unsigned int samples_size= 0;
1471     AVSubtitle subtitle, *subtitle_to_free;
1472     int64_t pkt_pts = AV_NOPTS_VALUE;
1473 #if CONFIG_AVFILTER
1474     int frame_available;
1475 #endif
1476
1477     AVPacket avpkt;
1478     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1479
1480     if(ist->next_pts == AV_NOPTS_VALUE)
1481         ist->next_pts= ist->pts;
1482
1483     if (pkt == NULL) {
1484         /* EOF handling */
1485         av_init_packet(&avpkt);
1486         avpkt.data = NULL;
1487         avpkt.size = 0;
1488         goto handle_eof;
1489     } else {
1490         avpkt = *pkt;
1491     }
1492
1493     if(pkt->dts != AV_NOPTS_VALUE)
1494         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1495     if(pkt->pts != AV_NOPTS_VALUE)
1496         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1497
1498     //while we have more to decode or while the decoder did output something on EOF
1499     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1500         uint8_t *data_buf, *decoded_data_buf;
1501         int data_size, decoded_data_size;
1502     handle_eof:
1503         ist->pts= ist->next_pts;
1504
1505         if(avpkt.size && avpkt.size != pkt->size &&
1506            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1507             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1508             ist->showed_multi_packet_warning=1;
1509         }
1510
1511         /* decode the packet if needed */
1512         decoded_data_buf = NULL; /* fail safe */
1513         decoded_data_size= 0;
1514         data_buf  = avpkt.data;
1515         data_size = avpkt.size;
1516         subtitle_to_free = NULL;
1517         if (ist->decoding_needed) {
1518             switch(ist->st->codec->codec_type) {
1519             case AVMEDIA_TYPE_AUDIO:{
1520                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1521                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1522                     av_free(samples);
1523                     samples= av_malloc(samples_size);
1524                 }
1525                 decoded_data_size= samples_size;
1526                     /* XXX: could avoid copy if PCM 16 bits with same
1527                        endianness as CPU */
1528                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1529                                             &avpkt);
1530                 if (ret < 0)
1531                     goto fail_decode;
1532                 avpkt.data += ret;
1533                 avpkt.size -= ret;
1534                 data_size   = ret;
1535                 /* Some bug in mpeg audio decoder gives */
1536                 /* decoded_data_size < 0, it seems they are overflows */
1537                 if (decoded_data_size <= 0) {
1538                     /* no audio frame */
1539                     continue;
1540                 }
1541                 decoded_data_buf = (uint8_t *)samples;
1542                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1543                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1544                 break;}
1545             case AVMEDIA_TYPE_VIDEO:
1546                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1547                     /* XXX: allocate picture correctly */
1548                     avcodec_get_frame_defaults(&picture);
1549                     avpkt.pts = pkt_pts;
1550                     avpkt.dts = ist->pts;
1551                     pkt_pts = AV_NOPTS_VALUE;
1552
1553                     ret = avcodec_decode_video2(ist->st->codec,
1554                                                 &picture, &got_picture, &avpkt);
1555                     ist->st->quality= picture.quality;
1556                     if (ret < 0)
1557                         goto fail_decode;
1558                     if (!got_picture) {
1559                         /* no picture yet */
1560                         goto discard_packet;
1561                     }
1562                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1563                     if (ist->st->codec->time_base.num != 0) {
1564                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1565                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1566                                           ist->st->codec->time_base.num * ticks) /
1567                             ist->st->codec->time_base.den;
1568                     }
1569                     avpkt.size = 0;
1570                     break;
1571             case AVMEDIA_TYPE_SUBTITLE:
1572                 ret = avcodec_decode_subtitle2(ist->st->codec,
1573                                                &subtitle, &got_picture, &avpkt);
1574                 if (ret < 0)
1575                     goto fail_decode;
1576                 if (!got_picture) {
1577                     goto discard_packet;
1578                 }
1579                 subtitle_to_free = &subtitle;
1580                 avpkt.size = 0;
1581                 break;
1582             default:
1583                 goto fail_decode;
1584             }
1585         } else {
1586             switch(ist->st->codec->codec_type) {
1587             case AVMEDIA_TYPE_AUDIO:
1588                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1589                     ist->st->codec->sample_rate;
1590                 break;
1591             case AVMEDIA_TYPE_VIDEO:
1592                 if (ist->st->codec->time_base.num != 0) {
1593                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1594                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1595                                       ist->st->codec->time_base.num * ticks) /
1596                         ist->st->codec->time_base.den;
1597                 }
1598                 break;
1599             }
1600             ret = avpkt.size;
1601             avpkt.size = 0;
1602         }
1603
1604         buffer_to_free = NULL;
1605         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1606             pre_process_video_frame(ist, (AVPicture *)&picture,
1607                                     &buffer_to_free);
1608         }
1609
1610 #if CONFIG_AVFILTER
1611         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
1612             for(i=0;i<nb_ostreams;i++) {
1613                 ost = ost_table[i];
1614                 if (ost->input_video_filter && ost->source_index == ist_index) {
1615                     AVRational sar;
1616                     if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
1617                     else                                  sar = ist->st->codec->sample_aspect_ratio;
1618                     // add it to be filtered
1619                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1620                                              ist->pts,
1621                                              sar);
1622                 }
1623             }
1624         }
1625 #endif
1626
1627         // preprocess audio (volume)
1628         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1629             if (audio_volume != 256) {
1630                 short *volp;
1631                 volp = samples;
1632                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1633                     int v = ((*volp) * audio_volume + 128) >> 8;
1634                     if (v < -32768) v = -32768;
1635                     if (v >  32767) v = 32767;
1636                     *volp++ = v;
1637                 }
1638             }
1639         }
1640
1641         /* frame rate emulation */
1642         if (rate_emu) {
1643             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1644             int64_t now = av_gettime() - ist->start;
1645             if (pts > now)
1646                 usleep(pts - now);
1647         }
1648         /* if output time reached then transcode raw format,
1649            encode packets and output them */
1650         if (start_time == 0 || ist->pts >= start_time)
1651             for(i=0;i<nb_ostreams;i++) {
1652                 int frame_size;
1653
1654                 ost = ost_table[i];
1655                 if (ost->source_index == ist_index) {
1656 #if CONFIG_AVFILTER
1657                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1658                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1659                 while (frame_available) {
1660                     AVRational ist_pts_tb;
1661                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1662                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1663                     if (ost->picref)
1664                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1665 #endif
1666                     os = output_files[ost->file_index];
1667
1668                     /* set the input output pts pairs */
1669                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1670
1671                     if (ost->encoding_needed) {
1672                         av_assert0(ist->decoding_needed);
1673                         switch(ost->st->codec->codec_type) {
1674                         case AVMEDIA_TYPE_AUDIO:
1675                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1676                             break;
1677                         case AVMEDIA_TYPE_VIDEO:
1678 #if CONFIG_AVFILTER
1679                             if (ost->picref->video)
1680                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1681 #endif
1682                             do_video_out(os, ost, ist, &picture, &frame_size);
1683                             if (vstats_filename && frame_size)
1684                                 do_video_stats(os, ost, frame_size);
1685                             break;
1686                         case AVMEDIA_TYPE_SUBTITLE:
1687                             do_subtitle_out(os, ost, ist, &subtitle,
1688                                             pkt->pts);
1689                             break;
1690                         default:
1691                             abort();
1692                         }
1693                     } else {
1694                         AVFrame avframe; //FIXME/XXX remove this
1695                         AVPacket opkt;
1696                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1697
1698                         av_init_packet(&opkt);
1699
1700                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1701                             continue;
1702
1703                         /* no reencoding needed : output the packet directly */
1704                         /* force the input stream PTS */
1705
1706                         avcodec_get_frame_defaults(&avframe);
1707                         ost->st->codec->coded_frame= &avframe;
1708                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1709
1710                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1711                             audio_size += data_size;
1712                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1713                             video_size += data_size;
1714                             ost->sync_opts++;
1715                         }
1716
1717                         opkt.stream_index= ost->index;
1718                         if(pkt->pts != AV_NOPTS_VALUE)
1719                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1720                         else
1721                             opkt.pts= AV_NOPTS_VALUE;
1722
1723                         if (pkt->dts == AV_NOPTS_VALUE)
1724                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1725                         else
1726                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1727                         opkt.dts -= ost_tb_start_time;
1728
1729                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1730                         opkt.flags= pkt->flags;
1731
1732                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1733                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1734                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1735                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1736                            ) {
1737                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1738                                 opkt.destruct= av_destruct_packet;
1739                         } else {
1740                             opkt.data = data_buf;
1741                             opkt.size = data_size;
1742                         }
1743
1744                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1745                         ost->st->codec->frame_number++;
1746                         ost->frame_number++;
1747                         av_free_packet(&opkt);
1748                     }
1749 #if CONFIG_AVFILTER
1750                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1751                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1752                     if(ost->picref)
1753                         avfilter_unref_buffer(ost->picref);
1754                 }
1755 #endif
1756                 }
1757             }
1758
1759         av_free(buffer_to_free);
1760         /* XXX: allocate the subtitles in the codec ? */
1761         if (subtitle_to_free) {
1762             avsubtitle_free(subtitle_to_free);
1763             subtitle_to_free = NULL;
1764         }
1765     }
1766  discard_packet:
1767     if (pkt == NULL) {
1768         /* EOF handling */
1769
1770         for(i=0;i<nb_ostreams;i++) {
1771             ost = ost_table[i];
1772             if (ost->source_index == ist_index) {
1773                 AVCodecContext *enc= ost->st->codec;
1774                 os = output_files[ost->file_index];
1775
1776                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1777                     continue;
1778                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1779                     continue;
1780
1781                 if (ost->encoding_needed) {
1782                     for(;;) {
1783                         AVPacket pkt;
1784                         int fifo_bytes;
1785                         av_init_packet(&pkt);
1786                         pkt.stream_index= ost->index;
1787
1788                         switch(ost->st->codec->codec_type) {
1789                         case AVMEDIA_TYPE_AUDIO:
1790                             fifo_bytes = av_fifo_size(ost->fifo);
1791                             ret = 0;
1792                             /* encode any samples remaining in fifo */
1793                             if (fifo_bytes > 0) {
1794                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1795                                 int fs_tmp = enc->frame_size;
1796
1797                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1798                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1799                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1800                                 } else { /* pad */
1801                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1802                                     if (allocated_audio_buf_size < frame_bytes)
1803                                         ffmpeg_exit(1);
1804                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
1805                                 }
1806
1807                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1808                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1809                                                           ost->st->time_base.num, enc->sample_rate);
1810                                 enc->frame_size = fs_tmp;
1811                             }
1812                             if(ret <= 0) {
1813                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1814                             }
1815                             if (ret < 0) {
1816                                 fprintf(stderr, "Audio encoding failed\n");
1817                                 ffmpeg_exit(1);
1818                             }
1819                             audio_size += ret;
1820                             pkt.flags |= AV_PKT_FLAG_KEY;
1821                             break;
1822                         case AVMEDIA_TYPE_VIDEO:
1823                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1824                             if (ret < 0) {
1825                                 fprintf(stderr, "Video encoding failed\n");
1826                                 ffmpeg_exit(1);
1827                             }
1828                             video_size += ret;
1829                             if(enc->coded_frame && enc->coded_frame->key_frame)
1830                                 pkt.flags |= AV_PKT_FLAG_KEY;
1831                             if (ost->logfile && enc->stats_out) {
1832                                 fprintf(ost->logfile, "%s", enc->stats_out);
1833                             }
1834                             break;
1835                         default:
1836                             ret=-1;
1837                         }
1838
1839                         if(ret<=0)
1840                             break;
1841                         pkt.data= bit_buffer;
1842                         pkt.size= ret;
1843                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1844                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1845                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1846                     }
1847                 }
1848             }
1849         }
1850     }
1851
1852     return 0;
1853  fail_decode:
1854     return -1;
1855 }
1856
1857 static void print_sdp(AVFormatContext **avc, int n)
1858 {
1859     char sdp[2048];
1860
1861     avf_sdp_create(avc, n, sdp, sizeof(sdp));
1862     printf("SDP:\n%s\n", sdp);
1863     fflush(stdout);
1864 }
1865
1866 static int copy_chapters(int infile, int outfile)
1867 {
1868     AVFormatContext *is = input_files[infile];
1869     AVFormatContext *os = output_files[outfile];
1870     int i;
1871
1872     for (i = 0; i < is->nb_chapters; i++) {
1873         AVChapter *in_ch = is->chapters[i], *out_ch;
1874         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1875                                       AV_TIME_BASE_Q, in_ch->time_base);
1876         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1877                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1878
1879
1880         if (in_ch->end < ts_off)
1881             continue;
1882         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1883             break;
1884
1885         out_ch = av_mallocz(sizeof(AVChapter));
1886         if (!out_ch)
1887             return AVERROR(ENOMEM);
1888
1889         out_ch->id        = in_ch->id;
1890         out_ch->time_base = in_ch->time_base;
1891         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1892         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1893
1894         if (metadata_chapters_autocopy)
1895             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1896
1897         os->nb_chapters++;
1898         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1899         if (!os->chapters)
1900             return AVERROR(ENOMEM);
1901         os->chapters[os->nb_chapters - 1] = out_ch;
1902     }
1903     return 0;
1904 }
1905
1906 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1907                                     AVCodecContext *avctx)
1908 {
1909     char *p;
1910     int n = 1, i;
1911     int64_t t;
1912
1913     for (p = kf; *p; p++)
1914         if (*p == ',')
1915             n++;
1916     ost->forced_kf_count = n;
1917     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1918     if (!ost->forced_kf_pts) {
1919         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1920         ffmpeg_exit(1);
1921     }
1922     for (i = 0; i < n; i++) {
1923         p = i ? strchr(p, ',') + 1 : kf;
1924         t = parse_time_or_die("force_key_frames", p, 1);
1925         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1926     }
1927 }
1928
1929 /*
1930  * The following code is the main loop of the file converter
1931  */
1932 static int transcode(AVFormatContext **output_files,
1933                      int nb_output_files,
1934                      AVFormatContext **input_files,
1935                      int nb_input_files,
1936                      AVStreamMap *stream_maps, int nb_stream_maps)
1937 {
1938     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1939     AVFormatContext *is, *os;
1940     AVCodecContext *codec, *icodec;
1941     AVOutputStream *ost, **ost_table = NULL;
1942     AVInputStream *ist, **ist_table = NULL;
1943     AVInputFile *file_table;
1944     char error[1024];
1945     int key;
1946     int want_sdp = 1;
1947     uint8_t no_packet[MAX_FILES]={0};
1948     int no_packet_count=0;
1949
1950     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1951     if (!file_table)
1952         goto fail;
1953
1954     /* input stream init */
1955     j = 0;
1956     for(i=0;i<nb_input_files;i++) {
1957         is = input_files[i];
1958         file_table[i].ist_index = j;
1959         file_table[i].nb_streams = is->nb_streams;
1960         j += is->nb_streams;
1961     }
1962     nb_istreams = j;
1963
1964     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1965     if (!ist_table)
1966         goto fail;
1967
1968     for(i=0;i<nb_istreams;i++) {
1969         ist = av_mallocz(sizeof(AVInputStream));
1970         if (!ist)
1971             goto fail;
1972         ist_table[i] = ist;
1973     }
1974     j = 0;
1975     for(i=0;i<nb_input_files;i++) {
1976         is = input_files[i];
1977         for(k=0;k<is->nb_streams;k++) {
1978             ist = ist_table[j++];
1979             ist->st = is->streams[k];
1980             ist->file_index = i;
1981             ist->index = k;
1982             ist->discard = 1; /* the stream is discarded by default
1983                                  (changed later) */
1984
1985             if (rate_emu) {
1986                 ist->start = av_gettime();
1987             }
1988         }
1989     }
1990
1991     /* output stream init */
1992     nb_ostreams = 0;
1993     for(i=0;i<nb_output_files;i++) {
1994         os = output_files[i];
1995         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1996             dump_format(output_files[i], i, output_files[i]->filename, 1);
1997             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1998             ret = AVERROR(EINVAL);
1999             goto fail;
2000         }
2001         nb_ostreams += os->nb_streams;
2002     }
2003     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2004         fprintf(stderr, "Number of stream maps must match number of output streams\n");
2005         ret = AVERROR(EINVAL);
2006         goto fail;
2007     }
2008
2009     /* Sanity check the mapping args -- do the input files & streams exist? */
2010     for(i=0;i<nb_stream_maps;i++) {
2011         int fi = stream_maps[i].file_index;
2012         int si = stream_maps[i].stream_index;
2013
2014         if (fi < 0 || fi > nb_input_files - 1 ||
2015             si < 0 || si > file_table[fi].nb_streams - 1) {
2016             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2017             ret = AVERROR(EINVAL);
2018             goto fail;
2019         }
2020         fi = stream_maps[i].sync_file_index;
2021         si = stream_maps[i].sync_stream_index;
2022         if (fi < 0 || fi > nb_input_files - 1 ||
2023             si < 0 || si > file_table[fi].nb_streams - 1) {
2024             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2025             ret = AVERROR(EINVAL);
2026             goto fail;
2027         }
2028     }
2029
2030     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2031     if (!ost_table)
2032         goto fail;
2033     n = 0;
2034     for(k=0;k<nb_output_files;k++) {
2035         os = output_files[k];
2036         for(i=0;i<os->nb_streams;i++,n++) {
2037             int found;
2038             ost = ost_table[n] = output_streams_for_file[k][i];
2039             ost->st = os->streams[i];
2040             if (nb_stream_maps > 0) {
2041                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2042                     stream_maps[n].stream_index;
2043
2044                 /* Sanity check that the stream types match */
2045                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2046                     int i= ost->file_index;
2047                     dump_format(output_files[i], i, output_files[i]->filename, 1);
2048                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2049                         stream_maps[n].file_index, stream_maps[n].stream_index,
2050                         ost->file_index, ost->index);
2051                     ffmpeg_exit(1);
2052                 }
2053
2054             } else {
2055                 int best_nb_frames=-1;
2056                 /* get corresponding input stream index : we select the first one with the right type */
2057                 found = 0;
2058                 for(j=0;j<nb_istreams;j++) {
2059                     int skip=0;
2060                     ist = ist_table[j];
2061                     if(opt_programid){
2062                         int pi,si;
2063                         AVFormatContext *f= input_files[ ist->file_index ];
2064                         skip=1;
2065                         for(pi=0; pi<f->nb_programs; pi++){
2066                             AVProgram *p= f->programs[pi];
2067                             if(p->id == opt_programid)
2068                                 for(si=0; si<p->nb_stream_indexes; si++){
2069                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2070                                         skip=0;
2071                                 }
2072                         }
2073                     }
2074                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2075                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2076                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2077                             best_nb_frames= ist->st->codec_info_nb_frames;
2078                             ost->source_index = j;
2079                             found = 1;
2080                         }
2081                     }
2082                 }
2083
2084                 if (!found) {
2085                     if(! opt_programid) {
2086                         /* try again and reuse existing stream */
2087                         for(j=0;j<nb_istreams;j++) {
2088                             ist = ist_table[j];
2089                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2090                                 && ist->st->discard != AVDISCARD_ALL) {
2091                                 ost->source_index = j;
2092                                 found = 1;
2093                             }
2094                         }
2095                     }
2096                     if (!found) {
2097                         int i= ost->file_index;
2098                         dump_format(output_files[i], i, output_files[i]->filename, 1);
2099                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2100                                 ost->file_index, ost->index);
2101                         ffmpeg_exit(1);
2102                     }
2103                 }
2104             }
2105             ist = ist_table[ost->source_index];
2106             ist->discard = 0;
2107             ost->sync_ist = (nb_stream_maps > 0) ?
2108                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2109                          stream_maps[n].sync_stream_index] : ist;
2110         }
2111     }
2112
2113     /* for each output stream, we compute the right encoding parameters */
2114     for(i=0;i<nb_ostreams;i++) {
2115         ost = ost_table[i];
2116         os = output_files[ost->file_index];
2117         ist = ist_table[ost->source_index];
2118
2119         codec = ost->st->codec;
2120         icodec = ist->st->codec;
2121
2122         if (metadata_streams_autocopy)
2123             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2124                              AV_METADATA_DONT_OVERWRITE);
2125
2126         ost->st->disposition = ist->st->disposition;
2127         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2128         codec->chroma_sample_location = icodec->chroma_sample_location;
2129
2130         if (ost->st->stream_copy) {
2131             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2132
2133             if (extra_size > INT_MAX)
2134                 goto fail;
2135
2136             /* if stream_copy is selected, no need to decode or encode */
2137             codec->codec_id = icodec->codec_id;
2138             codec->codec_type = icodec->codec_type;
2139
2140             if(!codec->codec_tag){
2141                 if(   !os->oformat->codec_tag
2142                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2143                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2144                     codec->codec_tag = icodec->codec_tag;
2145             }
2146
2147             codec->bit_rate = icodec->bit_rate;
2148             codec->rc_max_rate    = icodec->rc_max_rate;
2149             codec->rc_buffer_size = icodec->rc_buffer_size;
2150             codec->extradata= av_mallocz(extra_size);
2151             if (!codec->extradata)
2152                 goto fail;
2153             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2154             codec->extradata_size= icodec->extradata_size;
2155             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
2156                 codec->time_base = icodec->time_base;
2157                 codec->time_base.num *= icodec->ticks_per_frame;
2158                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2159                           codec->time_base.num, codec->time_base.den, INT_MAX);
2160             }else
2161                 codec->time_base = ist->st->time_base;
2162             switch(codec->codec_type) {
2163             case AVMEDIA_TYPE_AUDIO:
2164                 if(audio_volume != 256) {
2165                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2166                     ffmpeg_exit(1);
2167                 }
2168                 codec->channel_layout = icodec->channel_layout;
2169                 codec->sample_rate = icodec->sample_rate;
2170                 codec->channels = icodec->channels;
2171                 codec->frame_size = icodec->frame_size;
2172                 codec->block_align= icodec->block_align;
2173                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2174                     codec->block_align= 0;
2175                 if(codec->codec_id == CODEC_ID_AC3)
2176                     codec->block_align= 0;
2177                 break;
2178             case AVMEDIA_TYPE_VIDEO:
2179                 codec->pix_fmt = icodec->pix_fmt;
2180                 codec->width = icodec->width;
2181                 codec->height = icodec->height;
2182                 codec->has_b_frames = icodec->has_b_frames;
2183                 break;
2184             case AVMEDIA_TYPE_SUBTITLE:
2185                 codec->width = icodec->width;
2186                 codec->height = icodec->height;
2187                 break;
2188             default:
2189                 abort();
2190             }
2191         } else {
2192             switch(codec->codec_type) {
2193             case AVMEDIA_TYPE_AUDIO:
2194                 ost->fifo= av_fifo_alloc(1024);
2195                 if(!ost->fifo)
2196                     goto fail;
2197                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2198                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2199                 icodec->request_channels = codec->channels;
2200                 ist->decoding_needed = 1;
2201                 ost->encoding_needed = 1;
2202                 ost->resample_sample_fmt  = icodec->sample_fmt;
2203                 ost->resample_sample_rate = icodec->sample_rate;
2204                 ost->resample_channels    = icodec->channels;
2205                 break;
2206             case AVMEDIA_TYPE_VIDEO:
2207                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2208                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2209                     ffmpeg_exit(1);
2210                 }
2211                 ost->video_resample = (codec->width != icodec->width   ||
2212                                        codec->height != icodec->height ||
2213                         (codec->pix_fmt != icodec->pix_fmt));
2214                 if (ost->video_resample) {
2215 #if !CONFIG_AVFILTER
2216                     avcodec_get_frame_defaults(&ost->pict_tmp);
2217                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2218                                          codec->width, codec->height)) {
2219                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2220                         ffmpeg_exit(1);
2221                     }
2222                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2223                     ost->img_resample_ctx = sws_getContext(
2224                         icodec->width,
2225                         icodec->height,
2226                             icodec->pix_fmt,
2227                             codec->width,
2228                             codec->height,
2229                             codec->pix_fmt,
2230                             sws_flags, NULL, NULL, NULL);
2231                     if (ost->img_resample_ctx == NULL) {
2232                         fprintf(stderr, "Cannot get resampling context\n");
2233                         ffmpeg_exit(1);
2234                     }
2235
2236                     ost->original_height = icodec->height;
2237                     ost->original_width  = icodec->width;
2238 #endif
2239                     codec->bits_per_raw_sample= 0;
2240                 }
2241                 ost->resample_height = icodec->height;
2242                 ost->resample_width  = icodec->width;
2243                 ost->resample_pix_fmt= icodec->pix_fmt;
2244                 ost->encoding_needed = 1;
2245                 ist->decoding_needed = 1;
2246
2247 #if CONFIG_AVFILTER
2248                 if (configure_filters(ist, ost)) {
2249                     fprintf(stderr, "Error opening filters!\n");
2250                     exit(1);
2251                 }
2252 #endif
2253                 break;
2254             case AVMEDIA_TYPE_SUBTITLE:
2255                 ost->encoding_needed = 1;
2256                 ist->decoding_needed = 1;
2257                 break;
2258             default:
2259                 abort();
2260                 break;
2261             }
2262             /* two pass mode */
2263             if (ost->encoding_needed &&
2264                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2265                 char logfilename[1024];
2266                 FILE *f;
2267
2268                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2269                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2270                          i);
2271                 if (codec->flags & CODEC_FLAG_PASS1) {
2272                     f = fopen(logfilename, "wb");
2273                     if (!f) {
2274                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2275                         ffmpeg_exit(1);
2276                     }
2277                     ost->logfile = f;
2278                 } else {
2279                     char  *logbuffer;
2280                     size_t logbuffer_size;
2281                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2282                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2283                         ffmpeg_exit(1);
2284                     }
2285                     codec->stats_in = logbuffer;
2286                 }
2287             }
2288         }
2289         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2290             int size= codec->width * codec->height;
2291             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2292         }
2293     }
2294
2295     if (!bit_buffer)
2296         bit_buffer = av_malloc(bit_buffer_size);
2297     if (!bit_buffer) {
2298         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2299                 bit_buffer_size);
2300         ret = AVERROR(ENOMEM);
2301         goto fail;
2302     }
2303
2304     /* open each encoder */
2305     for(i=0;i<nb_ostreams;i++) {
2306         ost = ost_table[i];
2307         if (ost->encoding_needed) {
2308             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2309             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2310             if (!codec)
2311                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2312             if (!codec) {
2313                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2314                          ost->st->codec->codec_id, ost->file_index, ost->index);
2315                 ret = AVERROR(EINVAL);
2316                 goto dump_format;
2317             }
2318             if (dec->subtitle_header) {
2319                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2320                 if (!ost->st->codec->subtitle_header) {
2321                     ret = AVERROR(ENOMEM);
2322                     goto dump_format;
2323                 }
2324                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2325                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2326             }
2327             if (avcodec_open(ost->st->codec, codec) < 0) {
2328                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2329                         ost->file_index, ost->index);
2330                 ret = AVERROR(EINVAL);
2331                 goto dump_format;
2332             }
2333             extra_size += ost->st->codec->extradata_size;
2334         }
2335     }
2336
2337     /* open each decoder */
2338     for(i=0;i<nb_istreams;i++) {
2339         ist = ist_table[i];
2340         if (ist->decoding_needed) {
2341             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2342             if (!codec)
2343                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2344             if (!codec) {
2345                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2346                         ist->st->codec->codec_id, ist->file_index, ist->index);
2347                 ret = AVERROR(EINVAL);
2348                 goto dump_format;
2349             }
2350             if (avcodec_open(ist->st->codec, codec) < 0) {
2351                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2352                         ist->file_index, ist->index);
2353                 ret = AVERROR(EINVAL);
2354                 goto dump_format;
2355             }
2356             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2357             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2358         }
2359     }
2360
2361     /* init pts */
2362     for(i=0;i<nb_istreams;i++) {
2363         AVStream *st;
2364         ist = ist_table[i];
2365         st= ist->st;
2366         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2367         ist->next_pts = AV_NOPTS_VALUE;
2368         ist->is_start = 1;
2369     }
2370
2371     /* set meta data information from input file if required */
2372     for (i=0;i<nb_meta_data_maps;i++) {
2373         AVFormatContext *files[2];
2374         AVMetadata      **meta[2];
2375         int j;
2376
2377 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2378         if ((index) < 0 || (index) >= (nb_elems)) {\
2379             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2380                      (desc), (index));\
2381             ret = AVERROR(EINVAL);\
2382             goto dump_format;\
2383         }
2384
2385         int out_file_index = meta_data_maps[i][0].file;
2386         int in_file_index = meta_data_maps[i][1].file;
2387         if (in_file_index < 0 || out_file_index < 0)
2388             continue;
2389         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2390         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2391
2392         files[0] = output_files[out_file_index];
2393         files[1] = input_files[in_file_index];
2394
2395         for (j = 0; j < 2; j++) {
2396             AVMetaDataMap *map = &meta_data_maps[i][j];
2397
2398             switch (map->type) {
2399             case 'g':
2400                 meta[j] = &files[j]->metadata;
2401                 break;
2402             case 's':
2403                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2404                 meta[j] = &files[j]->streams[map->index]->metadata;
2405                 break;
2406             case 'c':
2407                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2408                 meta[j] = &files[j]->chapters[map->index]->metadata;
2409                 break;
2410             case 'p':
2411                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2412                 meta[j] = &files[j]->programs[map->index]->metadata;
2413                 break;
2414             }
2415         }
2416
2417         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2418     }
2419
2420     /* copy global metadata by default */
2421     if (metadata_global_autocopy) {
2422
2423         for (i = 0; i < nb_output_files; i++)
2424             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2425                              AV_METADATA_DONT_OVERWRITE);
2426     }
2427
2428     /* copy chapters according to chapter maps */
2429     for (i = 0; i < nb_chapter_maps; i++) {
2430         int infile  = chapter_maps[i].in_file;
2431         int outfile = chapter_maps[i].out_file;
2432
2433         if (infile < 0 || outfile < 0)
2434             continue;
2435         if (infile >= nb_input_files) {
2436             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2437             ret = AVERROR(EINVAL);
2438             goto dump_format;
2439         }
2440         if (outfile >= nb_output_files) {
2441             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2442             ret = AVERROR(EINVAL);
2443             goto dump_format;
2444         }
2445         copy_chapters(infile, outfile);
2446     }
2447
2448     /* copy chapters from the first input file that has them*/
2449     if (!nb_chapter_maps)
2450         for (i = 0; i < nb_input_files; i++) {
2451             if (!input_files[i]->nb_chapters)
2452                 continue;
2453
2454             for (j = 0; j < nb_output_files; j++)
2455                 if ((ret = copy_chapters(i, j)) < 0)
2456                     goto dump_format;
2457             break;
2458         }
2459
2460     /* open files and write file headers */
2461     for(i=0;i<nb_output_files;i++) {
2462         os = output_files[i];
2463         if (av_write_header(os) < 0) {
2464             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2465             ret = AVERROR(EINVAL);
2466             goto dump_format;
2467         }
2468         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2469             want_sdp = 0;
2470         }
2471     }
2472
2473  dump_format:
2474     /* dump the file output parameters - cannot be done before in case
2475        of stream copy */
2476     for(i=0;i<nb_output_files;i++) {
2477         dump_format(output_files[i], i, output_files[i]->filename, 1);
2478     }
2479
2480     /* dump the stream mapping */
2481     if (verbose >= 0) {
2482         fprintf(stderr, "Stream mapping:\n");
2483         for(i=0;i<nb_ostreams;i++) {
2484             ost = ost_table[i];
2485             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2486                     ist_table[ost->source_index]->file_index,
2487                     ist_table[ost->source_index]->index,
2488                     ost->file_index,
2489                     ost->index);
2490             if (ost->sync_ist != ist_table[ost->source_index])
2491                 fprintf(stderr, " [sync #%d.%d]",
2492                         ost->sync_ist->file_index,
2493                         ost->sync_ist->index);
2494             fprintf(stderr, "\n");
2495         }
2496     }
2497
2498     if (ret) {
2499         fprintf(stderr, "%s\n", error);
2500         goto fail;
2501     }
2502
2503     if (want_sdp) {
2504         print_sdp(output_files, nb_output_files);
2505     }
2506
2507     if (!using_stdin && verbose >= 0) {
2508         fprintf(stderr, "Press [q] to stop encoding\n");
2509         url_set_interrupt_cb(decode_interrupt_cb);
2510     }
2511     term_init();
2512
2513     timer_start = av_gettime();
2514
2515     for(; received_sigterm == 0;) {
2516         int file_index, ist_index;
2517         AVPacket pkt;
2518         double ipts_min;
2519         double opts_min;
2520
2521     redo:
2522         ipts_min= 1e100;
2523         opts_min= 1e100;
2524         /* if 'q' pressed, exits */
2525         if (!using_stdin) {
2526             if (q_pressed)
2527                 break;
2528             /* read_key() returns 0 on EOF */
2529             key = read_key();
2530             if (key == 'q')
2531                 break;
2532         }
2533
2534         /* select the stream that we must read now by looking at the
2535            smallest output pts */
2536         file_index = -1;
2537         for(i=0;i<nb_ostreams;i++) {
2538             double ipts, opts;
2539             ost = ost_table[i];
2540             os = output_files[ost->file_index];
2541             ist = ist_table[ost->source_index];
2542             if(ist->is_past_recording_time || no_packet[ist->file_index])
2543                 continue;
2544                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2545             ipts = (double)ist->pts;
2546             if (!file_table[ist->file_index].eof_reached){
2547                 if(ipts < ipts_min) {
2548                     ipts_min = ipts;
2549                     if(input_sync ) file_index = ist->file_index;
2550                 }
2551                 if(opts < opts_min) {
2552                     opts_min = opts;
2553                     if(!input_sync) file_index = ist->file_index;
2554                 }
2555             }
2556             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2557                 file_index= -1;
2558                 break;
2559             }
2560         }
2561         /* if none, if is finished */
2562         if (file_index < 0) {
2563             if(no_packet_count){
2564                 no_packet_count=0;
2565                 memset(no_packet, 0, sizeof(no_packet));
2566                 usleep(10000);
2567                 continue;
2568             }
2569             break;
2570         }
2571
2572         /* finish if limit size exhausted */
2573         if (limit_filesize != 0 && limit_filesize <= url_ftell(output_files[0]->pb))
2574             break;
2575
2576         /* read a frame from it and output it in the fifo */
2577         is = input_files[file_index];
2578         ret= av_read_frame(is, &pkt);
2579         if(ret == AVERROR(EAGAIN)){
2580             no_packet[file_index]=1;
2581             no_packet_count++;
2582             continue;
2583         }
2584         if (ret < 0) {
2585             file_table[file_index].eof_reached = 1;
2586             if (opt_shortest)
2587                 break;
2588             else
2589                 continue;
2590         }
2591
2592         no_packet_count=0;
2593         memset(no_packet, 0, sizeof(no_packet));
2594
2595         if (do_pkt_dump) {
2596             av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2597         }
2598         /* the following test is needed in case new streams appear
2599            dynamically in stream : we ignore them */
2600         if (pkt.stream_index >= file_table[file_index].nb_streams)
2601             goto discard_packet;
2602         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2603         ist = ist_table[ist_index];
2604         if (ist->discard)
2605             goto discard_packet;
2606
2607         if (pkt.dts != AV_NOPTS_VALUE)
2608             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2609         if (pkt.pts != AV_NOPTS_VALUE)
2610             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2611
2612         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2613             && input_files_ts_scale[file_index][pkt.stream_index]){
2614             if(pkt.pts != AV_NOPTS_VALUE)
2615                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2616             if(pkt.dts != AV_NOPTS_VALUE)
2617                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2618         }
2619
2620 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2621         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2622             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2623             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2624             int64_t delta= pkt_dts - ist->next_pts;
2625             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2626                 input_files_ts_offset[ist->file_index]-= delta;
2627                 if (verbose > 2)
2628                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2629                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2630                 if(pkt.pts != AV_NOPTS_VALUE)
2631                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2632             }
2633         }
2634
2635         /* finish if recording time exhausted */
2636         if (recording_time != INT64_MAX &&
2637             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2638             ist->is_past_recording_time = 1;
2639             goto discard_packet;
2640         }
2641
2642         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2643         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2644
2645             if (verbose >= 0)
2646                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2647                         ist->file_index, ist->index);
2648             if (exit_on_error)
2649                 ffmpeg_exit(1);
2650             av_free_packet(&pkt);
2651             goto redo;
2652         }
2653
2654     discard_packet:
2655         av_free_packet(&pkt);
2656
2657         /* dump report by using the output first video and audio streams */
2658         print_report(output_files, ost_table, nb_ostreams, 0);
2659     }
2660
2661     /* at the end of stream, we must flush the decoder buffers */
2662     for(i=0;i<nb_istreams;i++) {
2663         ist = ist_table[i];
2664         if (ist->decoding_needed) {
2665             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2666         }
2667     }
2668
2669     term_exit();
2670
2671     /* write the trailer if needed and close file */
2672     for(i=0;i<nb_output_files;i++) {
2673         os = output_files[i];
2674         av_write_trailer(os);
2675     }
2676
2677     /* dump report by using the first video and audio streams */
2678     print_report(output_files, ost_table, nb_ostreams, 1);
2679
2680     /* close each encoder */
2681     for(i=0;i<nb_ostreams;i++) {
2682         ost = ost_table[i];
2683         if (ost->encoding_needed) {
2684             av_freep(&ost->st->codec->stats_in);
2685             avcodec_close(ost->st->codec);
2686         }
2687 #if CONFIG_AVFILTER
2688         avfilter_graph_free(&ost->graph);
2689 #endif
2690     }
2691
2692     /* close each decoder */
2693     for(i=0;i<nb_istreams;i++) {
2694         ist = ist_table[i];
2695         if (ist->decoding_needed) {
2696             avcodec_close(ist->st->codec);
2697         }
2698     }
2699
2700     /* finished ! */
2701     ret = 0;
2702
2703  fail:
2704     av_freep(&bit_buffer);
2705     av_free(file_table);
2706
2707     if (ist_table) {
2708         for(i=0;i<nb_istreams;i++) {
2709             ist = ist_table[i];
2710             av_free(ist);
2711         }
2712         av_free(ist_table);
2713     }
2714     if (ost_table) {
2715         for(i=0;i<nb_ostreams;i++) {
2716             ost = ost_table[i];
2717             if (ost) {
2718                 if (ost->st->stream_copy)
2719                     av_freep(&ost->st->codec->extradata);
2720                 if (ost->logfile) {
2721                     fclose(ost->logfile);
2722                     ost->logfile = NULL;
2723                 }
2724                 av_fifo_free(ost->fifo); /* works even if fifo is not
2725                                              initialized but set to zero */
2726                 av_freep(&ost->st->codec->subtitle_header);
2727                 av_free(ost->pict_tmp.data[0]);
2728                 av_free(ost->forced_kf_pts);
2729                 if (ost->video_resample)
2730                     sws_freeContext(ost->img_resample_ctx);
2731                 if (ost->resample)
2732                     audio_resample_close(ost->resample);
2733                 if (ost->reformat_ctx)
2734                     av_audio_convert_free(ost->reformat_ctx);
2735                 av_free(ost);
2736             }
2737         }
2738         av_free(ost_table);
2739     }
2740     return ret;
2741 }
2742
2743 static void opt_format(const char *arg)
2744 {
2745     last_asked_format = arg;
2746 }
2747
2748 static void opt_video_rc_override_string(const char *arg)
2749 {
2750     video_rc_override_string = arg;
2751 }
2752
2753 static int opt_me_threshold(const char *opt, const char *arg)
2754 {
2755     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2756     return 0;
2757 }
2758
2759 static int opt_verbose(const char *opt, const char *arg)
2760 {
2761     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2762     return 0;
2763 }
2764
2765 static int opt_frame_rate(const char *opt, const char *arg)
2766 {
2767     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2768         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2769         ffmpeg_exit(1);
2770     }
2771     return 0;
2772 }
2773
2774 static int opt_bitrate(const char *opt, const char *arg)
2775 {
2776     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2777
2778     opt_default(opt, arg);
2779
2780     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2781         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2782
2783     return 0;
2784 }
2785
2786 static int opt_frame_crop(const char *opt, const char *arg)
2787 {
2788     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2789     return AVERROR(EINVAL);
2790 }
2791
2792 static void opt_frame_size(const char *arg)
2793 {
2794     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2795         fprintf(stderr, "Incorrect frame size\n");
2796         ffmpeg_exit(1);
2797     }
2798 }
2799
2800 static int opt_pad(const char *opt, const char *arg) {
2801     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2802     return -1;
2803 }
2804
2805 static void opt_frame_pix_fmt(const char *arg)
2806 {
2807     if (strcmp(arg, "list")) {
2808         frame_pix_fmt = av_get_pix_fmt(arg);
2809         if (frame_pix_fmt == PIX_FMT_NONE) {
2810             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2811             ffmpeg_exit(1);
2812         }
2813     } else {
2814         show_pix_fmts();
2815         ffmpeg_exit(0);
2816     }
2817 }
2818
2819 static void opt_frame_aspect_ratio(const char *arg)
2820 {
2821     int x = 0, y = 0;
2822     double ar = 0;
2823     const char *p;
2824     char *end;
2825
2826     p = strchr(arg, ':');
2827     if (p) {
2828         x = strtol(arg, &end, 10);
2829         if (end == p)
2830             y = strtol(end+1, &end, 10);
2831         if (x > 0 && y > 0)
2832             ar = (double)x / (double)y;
2833     } else
2834         ar = strtod(arg, NULL);
2835
2836     if (!ar) {
2837         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2838         ffmpeg_exit(1);
2839     }
2840     frame_aspect_ratio = ar;
2841 }
2842
2843 static int opt_metadata(const char *opt, const char *arg)
2844 {
2845     char *mid= strchr(arg, '=');
2846
2847     if(!mid){
2848         fprintf(stderr, "Missing =\n");
2849         ffmpeg_exit(1);
2850     }
2851     *mid++= 0;
2852
2853     av_metadata_set2(&metadata, arg, mid, 0);
2854
2855     return 0;
2856 }
2857
2858 static void opt_qscale(const char *arg)
2859 {
2860     video_qscale = atof(arg);
2861     if (video_qscale <= 0 ||
2862         video_qscale > 255) {
2863         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2864         ffmpeg_exit(1);
2865     }
2866 }
2867
2868 static void opt_top_field_first(const char *arg)
2869 {
2870     top_field_first= atoi(arg);
2871 }
2872
2873 static int opt_thread_count(const char *opt, const char *arg)
2874 {
2875     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2876 #if !HAVE_THREADS
2877     if (verbose >= 0)
2878         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2879 #endif
2880     return 0;
2881 }
2882
2883 static void opt_audio_sample_fmt(const char *arg)
2884 {
2885     if (strcmp(arg, "list")) {
2886         audio_sample_fmt = av_get_sample_fmt(arg);
2887         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2888             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2889             ffmpeg_exit(1);
2890         }
2891     } else {
2892         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
2893         ffmpeg_exit(0);
2894     }
2895 }
2896
2897 static int opt_audio_rate(const char *opt, const char *arg)
2898 {
2899     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2900     return 0;
2901 }
2902
2903 static int opt_audio_channels(const char *opt, const char *arg)
2904 {
2905     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2906     return 0;
2907 }
2908
2909 static void opt_video_channel(const char *arg)
2910 {
2911     video_channel = strtol(arg, NULL, 0);
2912 }
2913
2914 static void opt_video_standard(const char *arg)
2915 {
2916     video_standard = av_strdup(arg);
2917 }
2918
2919 static void opt_codec(int *pstream_copy, char **pcodec_name,
2920                       int codec_type, const char *arg)
2921 {
2922     av_freep(pcodec_name);
2923     if (!strcmp(arg, "copy")) {
2924         *pstream_copy = 1;
2925     } else {
2926         *pcodec_name = av_strdup(arg);
2927     }
2928 }
2929
2930 static void opt_audio_codec(const char *arg)
2931 {
2932     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2933 }
2934
2935 static void opt_video_codec(const char *arg)
2936 {
2937     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2938 }
2939
2940 static void opt_subtitle_codec(const char *arg)
2941 {
2942     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2943 }
2944
2945 static int opt_codec_tag(const char *opt, const char *arg)
2946 {
2947     char *tail;
2948     uint32_t *codec_tag;
2949
2950     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2951                 !strcmp(opt, "vtag") ? &video_codec_tag :
2952                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2953     if (!codec_tag)
2954         return -1;
2955
2956     *codec_tag = strtol(arg, &tail, 0);
2957     if (!tail || *tail)
2958         *codec_tag = AV_RL32(arg);
2959
2960     return 0;
2961 }
2962
2963 static void opt_map(const char *arg)
2964 {
2965     AVStreamMap *m;
2966     char *p;
2967
2968     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2969     m = &stream_maps[nb_stream_maps-1];
2970
2971     m->file_index = strtol(arg, &p, 0);
2972     if (*p)
2973         p++;
2974
2975     m->stream_index = strtol(p, &p, 0);
2976     if (*p) {
2977         p++;
2978         m->sync_file_index = strtol(p, &p, 0);
2979         if (*p)
2980             p++;
2981         m->sync_stream_index = strtol(p, &p, 0);
2982     } else {
2983         m->sync_file_index = m->file_index;
2984         m->sync_stream_index = m->stream_index;
2985     }
2986 }
2987
2988 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2989 {
2990     *endptr = arg;
2991     if (*arg == ',') {
2992         *type = *(++arg);
2993         switch (*arg) {
2994         case 'g':
2995             break;
2996         case 's':
2997         case 'c':
2998         case 'p':
2999             *index = strtol(++arg, endptr, 0);
3000             break;
3001         default:
3002             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
3003             ffmpeg_exit(1);
3004         }
3005     } else
3006         *type = 'g';
3007 }
3008
3009 static void opt_map_metadata(const char *arg)
3010 {
3011     AVMetaDataMap *m, *m1;
3012     char *p;
3013
3014     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
3015                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
3016
3017     m = &meta_data_maps[nb_meta_data_maps - 1][0];
3018     m->file = strtol(arg, &p, 0);
3019     parse_meta_type(p, &m->type, &m->index, &p);
3020     if (*p)
3021         p++;
3022
3023     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
3024     m1->file = strtol(p, &p, 0);
3025     parse_meta_type(p, &m1->type, &m1->index, &p);
3026
3027     if (m->type == 'g' || m1->type == 'g')
3028         metadata_global_autocopy = 0;
3029     if (m->type == 's' || m1->type == 's')
3030         metadata_streams_autocopy = 0;
3031     if (m->type == 'c' || m1->type == 'c')
3032         metadata_chapters_autocopy = 0;
3033 }
3034
3035 static void opt_map_meta_data(const char *arg)
3036 {
3037     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3038                     "Use -map_metadata instead.\n");
3039     opt_map_metadata(arg);
3040 }
3041
3042 static void opt_map_chapters(const char *arg)
3043 {
3044     AVChapterMap *c;
3045     char *p;
3046
3047     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3048                               nb_chapter_maps + 1);
3049     c = &chapter_maps[nb_chapter_maps - 1];
3050     c->out_file = strtol(arg, &p, 0);
3051     if (*p)
3052         p++;
3053
3054     c->in_file = strtol(p, &p, 0);
3055 }
3056
3057 static void opt_input_ts_scale(const char *arg)
3058 {
3059     unsigned int stream;
3060     double scale;
3061     char *p;
3062
3063     stream = strtol(arg, &p, 0);
3064     if (*p)
3065         p++;
3066     scale= strtod(p, &p);
3067
3068     if(stream >= MAX_STREAMS)
3069         ffmpeg_exit(1);
3070
3071     input_files_ts_scale[nb_input_files] = grow_array(input_files_ts_scale[nb_input_files], sizeof(*input_files_ts_scale[nb_input_files]), &nb_input_files_ts_scale[nb_input_files], stream + 1);
3072     input_files_ts_scale[nb_input_files][stream]= scale;
3073 }
3074
3075 static int opt_recording_time(const char *opt, const char *arg)
3076 {
3077     recording_time = parse_time_or_die(opt, arg, 1);
3078     return 0;
3079 }
3080
3081 static int opt_start_time(const char *opt, const char *arg)
3082 {
3083     start_time = parse_time_or_die(opt, arg, 1);
3084     return 0;
3085 }
3086
3087 static int opt_recording_timestamp(const char *opt, const char *arg)
3088 {
3089     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3090     return 0;
3091 }
3092
3093 static int opt_input_ts_offset(const char *opt, const char *arg)
3094 {
3095     input_ts_offset = parse_time_or_die(opt, arg, 1);
3096     return 0;
3097 }
3098
3099 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3100 {
3101     const char *codec_string = encoder ? "encoder" : "decoder";
3102     AVCodec *codec;
3103
3104     if(!name)
3105         return CODEC_ID_NONE;
3106     codec = encoder ?
3107         avcodec_find_encoder_by_name(name) :
3108         avcodec_find_decoder_by_name(name);
3109     if(!codec) {
3110         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3111         ffmpeg_exit(1);
3112     }
3113     if(codec->type != type) {
3114         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3115         ffmpeg_exit(1);
3116     }
3117     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3118        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3119         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3120                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3121                 codec_string, codec->name);
3122         codec = encoder ?
3123             avcodec_find_encoder(codec->id) :
3124             avcodec_find_decoder(codec->id);
3125         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3126             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3127                     codec_string, codec->name);
3128         ffmpeg_exit(1);
3129     }
3130     return codec->id;
3131 }
3132
3133 static void opt_input_file(const char *filename)
3134 {
3135     AVFormatContext *ic;
3136     AVFormatParameters params, *ap = &params;
3137     AVInputFormat *file_iformat = NULL;
3138     int err, i, ret, rfps, rfps_base;
3139     int64_t timestamp;
3140
3141     if (last_asked_format) {
3142         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3143             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3144             ffmpeg_exit(1);
3145         }
3146         last_asked_format = NULL;
3147     }
3148
3149     if (!strcmp(filename, "-"))
3150         filename = "pipe:";
3151
3152     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3153                     !strcmp(filename, "/dev/stdin");
3154
3155     /* get default parameters from command line */
3156     ic = avformat_alloc_context();
3157     if (!ic) {
3158         print_error(filename, AVERROR(ENOMEM));
3159         ffmpeg_exit(1);
3160     }
3161
3162     memset(ap, 0, sizeof(*ap));
3163     ap->prealloced_context = 1;
3164     ap->sample_rate = audio_sample_rate;
3165     ap->channels = audio_channels;
3166     ap->time_base.den = frame_rate.num;
3167     ap->time_base.num = frame_rate.den;
3168     ap->width = frame_width;
3169     ap->height = frame_height;
3170     ap->pix_fmt = frame_pix_fmt;
3171    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3172     ap->channel = video_channel;
3173     ap->standard = video_standard;
3174
3175     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3176
3177     ic->video_codec_id   =
3178         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3179                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3180     ic->audio_codec_id   =
3181         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3182                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3183     ic->subtitle_codec_id=
3184         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3185                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3186     ic->flags |= AVFMT_FLAG_NONBLOCK;
3187
3188     /* open the input file with generic libav function */
3189     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3190     if (err < 0) {
3191         print_error(filename, err);
3192         ffmpeg_exit(1);
3193     }
3194     if(opt_programid) {
3195         int i, j;
3196         int found=0;
3197         for(i=0; i<ic->nb_streams; i++){
3198             ic->streams[i]->discard= AVDISCARD_ALL;
3199         }
3200         for(i=0; i<ic->nb_programs; i++){
3201             AVProgram *p= ic->programs[i];
3202             if(p->id != opt_programid){
3203                 p->discard = AVDISCARD_ALL;
3204             }else{
3205                 found=1;
3206                 for(j=0; j<p->nb_stream_indexes; j++){
3207                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3208                 }
3209             }
3210         }
3211         if(!found){
3212             fprintf(stderr, "Specified program id not found\n");
3213             ffmpeg_exit(1);
3214         }
3215         opt_programid=0;
3216     }
3217
3218     ic->loop_input = loop_input;
3219
3220     /* If not enough info to get the stream parameters, we decode the
3221        first frames to get it. (used in mpeg case for example) */
3222     ret = av_find_stream_info(ic);
3223     if (ret < 0 && verbose >= 0) {
3224         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3225         av_close_input_file(ic);
3226         ffmpeg_exit(1);
3227     }
3228
3229     timestamp = start_time;
3230     /* add the stream start time */
3231     if (ic->start_time != AV_NOPTS_VALUE)
3232         timestamp += ic->start_time;
3233
3234     /* if seeking requested, we execute it */
3235     if (start_time != 0) {
3236         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3237         if (ret < 0) {
3238             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3239                     filename, (double)timestamp / AV_TIME_BASE);
3240         }
3241         /* reset seek info */
3242         start_time = 0;
3243     }
3244
3245     /* update the current parameters so that they match the one of the input stream */
3246     for(i=0;i<ic->nb_streams;i++) {
3247         AVStream *st = ic->streams[i];
3248         AVCodecContext *dec = st->codec;
3249         dec->thread_count = thread_count;
3250         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3251         switch (dec->codec_type) {
3252         case AVMEDIA_TYPE_AUDIO:
3253             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3254             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3255             //fprintf(stderr, "\nInput Audio channels: %d", dec->channels);
3256             channel_layout    = dec->channel_layout;
3257             audio_channels    = dec->channels;
3258             audio_sample_rate = dec->sample_rate;
3259             audio_sample_fmt  = dec->sample_fmt;
3260             if(audio_disable)
3261                 st->discard= AVDISCARD_ALL;
3262             /* Note that av_find_stream_info can add more streams, and we
3263              * currently have no chance of setting up lowres decoding
3264              * early enough for them. */
3265             if (dec->lowres)
3266                 audio_sample_rate >>= dec->lowres;
3267             break;
3268         case AVMEDIA_TYPE_VIDEO:
3269             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3270             set_context_opts(dec, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, input_codecs[nb_input_codecs-1]);
3271             frame_height = dec->height;
3272             frame_width  = dec->width;
3273             if(ic->streams[i]->sample_aspect_ratio.num)
3274                 frame_aspect_ratio=av_q2d(ic->streams[i]->sample_aspect_ratio);
3275             else
3276                 frame_aspect_ratio=av_q2d(dec->sample_aspect_ratio);
3277             frame_aspect_ratio *= (float) dec->width / dec->height;
3278             frame_pix_fmt = dec->pix_fmt;
3279             rfps      = ic->streams[i]->r_frame_rate.num;
3280             rfps_base = ic->streams[i]->r_frame_rate.den;
3281             if (dec->lowres) {
3282                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3283                 frame_height >>= dec->lowres;
3284                 frame_width  >>= dec->lowres;
3285                 dec->height = frame_height;
3286                 dec->width  = frame_width;
3287             }
3288             if(me_threshold)
3289                 dec->debug |= FF_DEBUG_MV;
3290
3291             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3292
3293                 if (verbose >= 0)
3294                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3295                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3296
3297                     (float)rfps / rfps_base, rfps, rfps_base);
3298             }
3299             /* update the current frame rate to match the stream frame rate */
3300             frame_rate.num = rfps;
3301             frame_rate.den = rfps_base;
3302
3303             if(video_disable)
3304                 st->discard= AVDISCARD_ALL;
3305             else if(video_discard)
3306                 st->discard= video_discard;
3307             break;
3308         case AVMEDIA_TYPE_DATA:
3309             break;
3310         case AVMEDIA_TYPE_SUBTITLE:
3311             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3312             if(subtitle_disable)
3313                 st->discard = AVDISCARD_ALL;
3314             break;
3315         case AVMEDIA_TYPE_ATTACHMENT:
3316         case AVMEDIA_TYPE_UNKNOWN:
3317             break;
3318         default:
3319             abort();
3320         }
3321     }
3322
3323     input_files[nb_input_files] = ic;
3324     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3325     /* dump the file content */
3326     if (verbose >= 0)
3327         dump_format(ic, nb_input_files, filename, 0);
3328
3329     nb_input_files++;
3330
3331     video_channel = 0;
3332
3333     av_freep(&video_codec_name);
3334     av_freep(&audio_codec_name);
3335     av_freep(&subtitle_codec_name);
3336 }
3337
3338 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
3339                                          int *has_subtitle_ptr)
3340 {
3341     int has_video, has_audio, has_subtitle, i, j;
3342     AVFormatContext *ic;
3343
3344     has_video = 0;
3345     has_audio = 0;
3346     has_subtitle = 0;
3347     for(j=0;j<nb_input_files;j++) {
3348         ic = input_files[j];
3349         for(i=0;i<ic->nb_streams;i++) {
3350             AVCodecContext *enc = ic->streams[i]->codec;
3351             switch(enc->codec_type) {
3352             case AVMEDIA_TYPE_AUDIO:
3353                 has_audio = 1;
3354                 break;
3355             case AVMEDIA_TYPE_VIDEO:
3356                 has_video = 1;
3357                 break;
3358             case AVMEDIA_TYPE_SUBTITLE:
3359                 has_subtitle = 1;
3360                 break;
3361             case AVMEDIA_TYPE_DATA:
3362             case AVMEDIA_TYPE_ATTACHMENT:
3363             case AVMEDIA_TYPE_UNKNOWN:
3364                 break;
3365             default:
3366                 abort();
3367             }
3368         }
3369     }
3370     *has_video_ptr = has_video;
3371     *has_audio_ptr = has_audio;
3372     *has_subtitle_ptr = has_subtitle;
3373 }
3374
3375 static void new_video_stream(AVFormatContext *oc, int file_idx)
3376 {
3377     AVStream *st;
3378     AVOutputStream *ost;
3379     AVCodecContext *video_enc;
3380     enum CodecID codec_id = CODEC_ID_NONE;
3381     AVCodec *codec= NULL;
3382     int i;
3383
3384     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3385     if (!st) {
3386         fprintf(stderr, "Could not alloc stream\n");
3387         ffmpeg_exit(1);
3388     }
3389     ost = new_output_stream(oc, file_idx);
3390
3391     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3392     if(!video_stream_copy){
3393         if (video_codec_name) {
3394             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3395                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3396             codec = avcodec_find_encoder_by_name(video_codec_name);
3397             output_codecs[nb_output_codecs-1] = codec;
3398         } else {
3399             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3400             codec = avcodec_find_encoder(codec_id);
3401         }
3402
3403         if(frame_aspect_ratio > 0){
3404             i = vfilters ? strlen(vfilters) : 0;
3405             vfilters = av_realloc(vfilters, i+100);
3406             snprintf(vfilters+i, i+100, "%csetdar=%f\n", i?',':' ', frame_aspect_ratio);
3407             frame_aspect_ratio=0;
3408         }
3409
3410         ost->avfilter= vfilters;
3411         vfilters= NULL;
3412     }
3413
3414     avcodec_get_context_defaults3(st->codec, codec);
3415     ost->bitstream_filters = video_bitstream_filters;
3416     video_bitstream_filters= NULL;
3417
3418     st->codec->thread_count= thread_count;
3419
3420     video_enc = st->codec;
3421
3422     if(video_codec_tag)
3423         video_enc->codec_tag= video_codec_tag;
3424
3425     if(   (video_global_header&1)
3426        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3427         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3428         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3429     }
3430     if(video_global_header&2){
3431         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3432         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3433     }
3434
3435     if (video_stream_copy) {
3436         st->stream_copy = 1;
3437         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3438         video_enc->sample_aspect_ratio =
3439         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3440     } else {
3441         const char *p;
3442         int i;
3443         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3444
3445         video_enc->codec_id = codec_id;
3446         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3447
3448         if (codec && codec->supported_framerates && !force_fps)
3449             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3450         video_enc->time_base.den = fps.num;
3451         video_enc->time_base.num = fps.den;
3452
3453         video_enc->width = frame_width;
3454         video_enc->height = frame_height;
3455         video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
3456         video_enc->pix_fmt = frame_pix_fmt;
3457         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3458
3459         choose_pixel_fmt(st, codec);
3460
3461         if (intra_only)
3462             video_enc->gop_size = 0;
3463         if (video_qscale || same_quality) {
3464             video_enc->flags |= CODEC_FLAG_QSCALE;
3465             video_enc->global_quality=
3466                 st->quality = FF_QP2LAMBDA * video_qscale;
3467         }
3468
3469         if(intra_matrix)
3470             video_enc->intra_matrix = intra_matrix;
3471         if(inter_matrix)
3472             video_enc->inter_matrix = inter_matrix;
3473
3474         p= video_rc_override_string;
3475         for(i=0; p; i++){
3476             int start, end, q;
3477             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3478             if(e!=3){
3479                 fprintf(stderr, "error parsing rc_override\n");
3480                 ffmpeg_exit(1);
3481             }
3482             video_enc->rc_override=
3483                 av_realloc(video_enc->rc_override,
3484                            sizeof(RcOverride)*(i+1));
3485             video_enc->rc_override[i].start_frame= start;
3486             video_enc->rc_override[i].end_frame  = end;
3487             if(q>0){
3488                 video_enc->rc_override[i].qscale= q;
3489                 video_enc->rc_override[i].quality_factor= 1.0;
3490             }
3491             else{
3492                 video_enc->rc_override[i].qscale= 0;
3493                 video_enc->rc_override[i].quality_factor= -q/100.0;
3494             }
3495             p= strchr(p, '/');
3496             if(p) p++;
3497         }
3498         video_enc->rc_override_count=i;
3499         if (!video_enc->rc_initial_buffer_occupancy)
3500             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3501         video_enc->me_threshold= me_threshold;
3502         video_enc->intra_dc_precision= intra_dc_precision - 8;
3503
3504         if (do_psnr)
3505             video_enc->flags|= CODEC_FLAG_PSNR;
3506
3507         /* two pass mode */
3508         if (do_pass) {
3509             if (do_pass == 1) {
3510                 video_enc->flags |= CODEC_FLAG_PASS1;
3511             } else {
3512                 video_enc->flags |= CODEC_FLAG_PASS2;
3513             }
3514         }
3515
3516         if (forced_key_frames)
3517             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3518     }
3519     if (video_language) {
3520         av_metadata_set2(&st->metadata, "language", video_language, 0);
3521         av_freep(&video_language);
3522     }
3523
3524     /* reset some key parameters */
3525     video_disable = 0;
3526     av_freep(&video_codec_name);
3527     av_freep(&forced_key_frames);
3528     video_stream_copy = 0;
3529     frame_pix_fmt = PIX_FMT_NONE;
3530 }
3531
3532 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3533 {
3534     AVStream *st;
3535     AVOutputStream *ost;
3536     AVCodec *codec= NULL;
3537     AVCodecContext *audio_enc;
3538     enum CodecID codec_id = CODEC_ID_NONE;
3539
3540     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3541     if (!st) {
3542         fprintf(stderr, "Could not alloc stream\n");
3543         ffmpeg_exit(1);
3544     }
3545     ost = new_output_stream(oc, file_idx);
3546
3547     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3548     if(!audio_stream_copy){
3549         if (audio_codec_name) {
3550             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3551                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3552             codec = avcodec_find_encoder_by_name(audio_codec_name);
3553             output_codecs[nb_output_codecs-1] = codec;
3554         } else {
3555             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3556             codec = avcodec_find_encoder(codec_id);
3557         }
3558     }
3559
3560     avcodec_get_context_defaults3(st->codec, codec);
3561
3562     ost->bitstream_filters = audio_bitstream_filters;
3563     audio_bitstream_filters= NULL;
3564
3565     st->codec->thread_count= thread_count;
3566
3567     audio_enc = st->codec;
3568     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3569
3570     if(audio_codec_tag)
3571         audio_enc->codec_tag= audio_codec_tag;
3572
3573     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3574         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3575         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3576     }
3577     if (audio_stream_copy) {
3578         st->stream_copy = 1;
3579         audio_enc->channels = audio_channels;
3580         audio_enc->sample_rate = audio_sample_rate;
3581     } else {
3582         audio_enc->codec_id = codec_id;
3583         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3584
3585         if (audio_qscale > QSCALE_NONE) {
3586             audio_enc->flags |= CODEC_FLAG_QSCALE;
3587             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3588         }
3589         audio_enc->channels = audio_channels;
3590         audio_enc->sample_fmt = audio_sample_fmt;
3591         audio_enc->sample_rate = audio_sample_rate;
3592         audio_enc->channel_layout = channel_layout;
3593         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3594             audio_enc->channel_layout = 0;
3595         choose_sample_fmt(st, codec);
3596         choose_sample_rate(st, codec);
3597     }
3598     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3599     if (audio_language) {
3600         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3601         av_freep(&audio_language);
3602     }
3603
3604     /* reset some key parameters */
3605     audio_disable = 0;
3606     av_freep(&audio_codec_name);
3607     audio_stream_copy = 0;
3608 }
3609
3610 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3611 {
3612     AVStream *st;
3613     AVOutputStream *ost;
3614     AVCodec *codec=NULL;
3615     AVCodecContext *subtitle_enc;
3616     enum CodecID codec_id = CODEC_ID_NONE;
3617
3618     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3619     if (!st) {
3620         fprintf(stderr, "Could not alloc stream\n");
3621         ffmpeg_exit(1);
3622     }
3623     ost = new_output_stream(oc, file_idx);
3624     subtitle_enc = st->codec;
3625     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3626     if(!subtitle_stream_copy){
3627         if (subtitle_codec_name) {
3628             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3629                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3630             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3631         } else {
3632             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3633             codec = avcodec_find_encoder(codec_id);
3634         }
3635     }
3636     avcodec_get_context_defaults3(st->codec, codec);
3637
3638     ost->bitstream_filters = subtitle_bitstream_filters;
3639     subtitle_bitstream_filters= NULL;
3640
3641     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3642
3643     if(subtitle_codec_tag)
3644         subtitle_enc->codec_tag= subtitle_codec_tag;
3645
3646     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3647         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3648         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3649     }
3650     if (subtitle_stream_copy) {
3651         st->stream_copy = 1;
3652     } else {
3653         subtitle_enc->codec_id = codec_id;
3654         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3655     }
3656
3657     if (subtitle_language) {
3658         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3659         av_freep(&subtitle_language);
3660     }
3661
3662     subtitle_disable = 0;
3663     av_freep(&subtitle_codec_name);
3664     subtitle_stream_copy = 0;
3665 }
3666