lavf: use designated initializers for AVClasses.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/pixdesc.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/libm.h"
45 #include "libavformat/os_support.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avfilter.h"
49 # include "libavfilter/avfiltergraph.h"
50 # include "libavfilter/vsrc_buffer.h"
51 #endif
52
53 #if HAVE_SYS_RESOURCE_H
54 #include <sys/types.h>
55 #include <sys/time.h>
56 #include <sys/resource.h>
57 #elif HAVE_GETPROCESSTIMES
58 #include <windows.h>
59 #endif
60 #if HAVE_GETPROCESSMEMORYINFO
61 #include <windows.h>
62 #include <psapi.h>
63 #endif
64
65 #if HAVE_SYS_SELECT_H
66 #include <sys/select.h>
67 #endif
68
69 #include <time.h>
70
71 #include "cmdutils.h"
72
73 #include "libavutil/avassert.h"
74
75 const char program_name[] = "ffmpeg";
76 const int program_birth_year = 2000;
77
78 /* select an input stream for an output stream */
79 typedef struct AVStreamMap {
80     int file_index;
81     int stream_index;
82     int sync_file_index;
83     int sync_stream_index;
84 } AVStreamMap;
85
86 /**
87  * select an input file for an output file
88  */
89 typedef struct AVMetaDataMap {
90     int  file;      //< file index
91     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
92     int  index;     //< stream/chapter/program number
93 } AVMetaDataMap;
94
95 typedef struct AVChapterMap {
96     int in_file;
97     int out_file;
98 } AVChapterMap;
99
100 static const OptionDef options[];
101
102 #define MAX_FILES 100
103 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
104
105 #define FFM_PACKET_SIZE 4096 //XXX a duplicate of the line in ffm.h
106
107 static const char *last_asked_format = NULL;
108 static AVFormatContext *input_files[MAX_FILES];
109 static int64_t input_files_ts_offset[MAX_FILES];
110 static double *input_files_ts_scale[MAX_FILES] = {NULL};
111 static AVCodec **input_codecs = NULL;
112 static int nb_input_files = 0;
113 static int nb_input_codecs = 0;
114 static int nb_input_files_ts_scale[MAX_FILES] = {0};
115
116 static AVFormatContext *output_files[MAX_FILES];
117 static AVCodec **output_codecs = NULL;
118 static int nb_output_files = 0;
119 static int nb_output_codecs = 0;
120
121 static AVStreamMap *stream_maps = NULL;
122 static int nb_stream_maps;
123
124 /* first item specifies output metadata, second is input */
125 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
126 static int nb_meta_data_maps;
127 static int metadata_global_autocopy   = 1;
128 static int metadata_streams_autocopy  = 1;
129 static int metadata_chapters_autocopy = 1;
130
131 static AVChapterMap *chapter_maps = NULL;
132 static int nb_chapter_maps;
133
134 /* indexed by output file stream index */
135 static int *streamid_map = NULL;
136 static int nb_streamid_map = 0;
137
138 static int frame_width  = 0;
139 static int frame_height = 0;
140 static float frame_aspect_ratio = 0;
141 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
142 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
143 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
144 static AVRational frame_rate;
145 static float video_qscale = 0;
146 static uint16_t *intra_matrix = NULL;
147 static uint16_t *inter_matrix = NULL;
148 static const char *video_rc_override_string=NULL;
149 static int video_disable = 0;
150 static int video_discard = 0;
151 static char *video_codec_name = NULL;
152 static unsigned int video_codec_tag = 0;
153 static char *video_language = NULL;
154 static int same_quality = 0;
155 static int do_deinterlace = 0;
156 static int top_field_first = -1;
157 static int me_threshold = 0;
158 static int intra_dc_precision = 8;
159 static int loop_input = 0;
160 static int loop_output = AVFMT_NOOUTPUTLOOP;
161 static int qp_hist = 0;
162 #if CONFIG_AVFILTER
163 static char *vfilters = NULL;
164 #endif
165
166 static int intra_only = 0;
167 static int audio_sample_rate = 44100;
168 static int64_t channel_layout = 0;
169 #define QSCALE_NONE -99999
170 static float audio_qscale = QSCALE_NONE;
171 static int audio_disable = 0;
172 static int audio_channels = 1;
173 static char  *audio_codec_name = NULL;
174 static unsigned int audio_codec_tag = 0;
175 static char *audio_language = NULL;
176
177 static int subtitle_disable = 0;
178 static char *subtitle_codec_name = NULL;
179 static char *subtitle_language = NULL;
180 static unsigned int subtitle_codec_tag = 0;
181
182 static int data_disable = 0;
183 static char *data_codec_name = NULL;
184 static unsigned int data_codec_tag = 0;
185
186 static float mux_preload= 0.5;
187 static float mux_max_delay= 0.7;
188
189 static int64_t recording_time = INT64_MAX;
190 static int64_t start_time = 0;
191 static int64_t recording_timestamp = 0;
192 static int64_t input_ts_offset = 0;
193 static int file_overwrite = 0;
194 static AVMetadata *metadata;
195 static int do_benchmark = 0;
196 static int do_hex_dump = 0;
197 static int do_pkt_dump = 0;
198 static int do_psnr = 0;
199 static int do_pass = 0;
200 static char *pass_logfilename_prefix = NULL;
201 static int audio_stream_copy = 0;
202 static int video_stream_copy = 0;
203 static int subtitle_stream_copy = 0;
204 static int data_stream_copy = 0;
205 static int video_sync_method= -1;
206 static int audio_sync_method= 0;
207 static float audio_drift_threshold= 0.1;
208 static int copy_ts= 0;
209 static int copy_tb;
210 static int opt_shortest = 0;
211 static int video_global_header = 0;
212 static char *vstats_filename;
213 static FILE *vstats_file;
214 static int opt_programid = 0;
215 static int copy_initial_nonkeyframes = 0;
216
217 static int rate_emu = 0;
218
219 static int  video_channel = 0;
220 static char *video_standard;
221
222 static int audio_volume = 256;
223
224 static int exit_on_error = 0;
225 static int using_stdin = 0;
226 static int verbose = 1;
227 static int thread_count= 1;
228 static int64_t video_size = 0;
229 static int64_t audio_size = 0;
230 static int64_t extra_size = 0;
231 static int nb_frames_dup = 0;
232 static int nb_frames_drop = 0;
233 static int input_sync;
234 static uint64_t limit_filesize = 0;
235 static int force_fps = 0;
236 static char *forced_key_frames = NULL;
237
238 static float dts_delta_threshold = 10;
239
240 static int64_t timer_start;
241
242 static uint8_t *audio_buf;
243 static uint8_t *audio_out;
244 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
245
246 static short *samples;
247
248 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
249 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
250 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
251
252 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
253
254 struct AVInputStream;
255
256 typedef struct AVOutputStream {
257     int file_index;          /* file index */
258     int index;               /* stream index in the output file */
259     int source_index;        /* AVInputStream index */
260     AVStream *st;            /* stream in the output file */
261     int encoding_needed;     /* true if encoding needed for this stream */
262     int frame_number;
263     /* input pts and corresponding output pts
264        for A/V sync */
265     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
266     struct AVInputStream *sync_ist; /* input stream to sync against */
267     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
268     AVBitStreamFilterContext *bitstream_filters;
269     /* video only */
270     int video_resample;
271     AVFrame pict_tmp;      /* temporary image for resampling */
272     struct SwsContext *img_resample_ctx; /* for image resampling */
273     int resample_height;
274     int resample_width;
275     int resample_pix_fmt;
276
277     float frame_aspect_ratio;
278
279     /* forced key frames */
280     int64_t *forced_kf_pts;
281     int forced_kf_count;
282     int forced_kf_index;
283
284     /* audio only */
285     int audio_resample;
286     ReSampleContext *resample; /* for audio resampling */
287     int resample_sample_fmt;
288     int resample_channels;
289     int resample_sample_rate;
290     int reformat_pair;
291     AVAudioConvert *reformat_ctx;
292     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
293     FILE *logfile;
294
295 #if CONFIG_AVFILTER
296     AVFilterContext *output_video_filter;
297     AVFilterContext *input_video_filter;
298     AVFilterBufferRef *picref;
299     char *avfilter;
300     AVFilterGraph *graph;
301 #endif
302
303    int sws_flags;
304 } AVOutputStream;
305
306 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
307 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
308
309 typedef struct AVInputStream {
310     int file_index;
311     int index;
312     AVStream *st;
313     int discard;             /* true if stream data should be discarded */
314     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
315     int64_t sample_index;      /* current sample */
316
317     int64_t       start;     /* time when read started */
318     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
319                                 is not defined */
320     int64_t       pts;       /* current pts */
321     PtsCorrectionContext pts_ctx;
322     int is_start;            /* is 1 at the start and after a discontinuity */
323     int showed_multi_packet_warning;
324     int is_past_recording_time;
325 #if CONFIG_AVFILTER
326     AVFrame *filter_frame;
327     int has_filter_frame;
328 #endif
329 } AVInputStream;
330
331 typedef struct AVInputFile {
332     int eof_reached;      /* true if eof reached */
333     int ist_index;        /* index of first stream in ist_table */
334     int buffer_size;      /* current total buffer size */
335     int nb_streams;       /* nb streams we are aware of */
336 } AVInputFile;
337
338 #if CONFIG_AVFILTER
339
340 static int configure_video_filters(AVInputStream *ist, AVOutputStream *ost)
341 {
342     AVFilterContext *last_filter, *filter;
343     /** filter graph containing all filters including input & output */
344     AVCodecContext *codec = ost->st->codec;
345     AVCodecContext *icodec = ist->st->codec;
346     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
347     AVRational sample_aspect_ratio;
348     char args[255];
349     int ret;
350
351     ost->graph = avfilter_graph_alloc();
352
353     if (ist->st->sample_aspect_ratio.num){
354         sample_aspect_ratio = ist->st->sample_aspect_ratio;
355     }else
356         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
357
358     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
359              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
360              sample_aspect_ratio.num, sample_aspect_ratio.den);
361
362     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
363                                        "src", args, NULL, ost->graph);
364     if (ret < 0)
365         return ret;
366     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
367                                        "out", NULL, &ffsink_ctx, ost->graph);
368     if (ret < 0)
369         return ret;
370     last_filter = ost->input_video_filter;
371
372     if (codec->width  != icodec->width || codec->height != icodec->height) {
373         snprintf(args, 255, "%d:%d:flags=0x%X",
374                  codec->width,
375                  codec->height,
376                  ost->sws_flags);
377         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
378                                                 NULL, args, NULL, ost->graph)) < 0)
379             return ret;
380         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
381             return ret;
382         last_filter = filter;
383     }
384
385     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
386     ost->graph->scale_sws_opts = av_strdup(args);
387
388     if (ost->avfilter) {
389         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
390         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
391
392         outputs->name    = av_strdup("in");
393         outputs->filter_ctx = last_filter;
394         outputs->pad_idx = 0;
395         outputs->next    = NULL;
396
397         inputs->name    = av_strdup("out");
398         inputs->filter_ctx = ost->output_video_filter;
399         inputs->pad_idx = 0;
400         inputs->next    = NULL;
401
402         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
403             return ret;
404         av_freep(&ost->avfilter);
405     } else {
406         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
407             return ret;
408     }
409
410     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
411         return ret;
412
413     codec->width  = ost->output_video_filter->inputs[0]->w;
414     codec->height = ost->output_video_filter->inputs[0]->h;
415     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
416         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
417         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
418         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
419
420     return 0;
421 }
422 #endif /* CONFIG_AVFILTER */
423
424 static void term_exit(void)
425 {
426     av_log(NULL, AV_LOG_QUIET, "");
427 }
428
429 static volatile int received_sigterm = 0;
430
431 static void
432 sigterm_handler(int sig)
433 {
434     received_sigterm = sig;
435     term_exit();
436 }
437
438 static void term_init(void)
439 {
440     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
441     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
442 #ifdef SIGXCPU
443     signal(SIGXCPU, sigterm_handler);
444 #endif
445 }
446
447 static int decode_interrupt_cb(void)
448 {
449     return received_sigterm;
450 }
451
452 static int ffmpeg_exit(int ret)
453 {
454     int i;
455
456     /* close files */
457     for(i=0;i<nb_output_files;i++) {
458         AVFormatContext *s = output_files[i];
459         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
460             avio_close(s->pb);
461         avformat_free_context(s);
462         av_free(output_streams_for_file[i]);
463     }
464     for(i=0;i<nb_input_files;i++) {
465         av_close_input_file(input_files[i]);
466         av_free(input_files_ts_scale[i]);
467     }
468
469     av_free(intra_matrix);
470     av_free(inter_matrix);
471
472     if (vstats_file)
473         fclose(vstats_file);
474     av_free(vstats_filename);
475
476     av_free(streamid_map);
477     av_free(input_codecs);
478     av_free(output_codecs);
479     av_free(stream_maps);
480     av_free(meta_data_maps);
481
482     av_free(video_codec_name);
483     av_free(audio_codec_name);
484     av_free(subtitle_codec_name);
485     av_free(data_codec_name);
486
487     av_free(video_standard);
488
489     uninit_opts();
490     av_free(audio_buf);
491     av_free(audio_out);
492     allocated_audio_buf_size= allocated_audio_out_size= 0;
493     av_free(samples);
494
495 #if CONFIG_AVFILTER
496     avfilter_uninit();
497 #endif
498
499     if (received_sigterm) {
500         fprintf(stderr,
501             "Received signal %d: terminating.\n",
502             (int) received_sigterm);
503         exit (255);
504     }
505
506     exit(ret); /* not all OS-es handle main() return value */
507     return ret;
508 }
509
510 /* similar to ff_dynarray_add() and av_fast_realloc() */
511 static void *grow_array(void *array, int elem_size, int *size, int new_size)
512 {
513     if (new_size >= INT_MAX / elem_size) {
514         fprintf(stderr, "Array too big.\n");
515         ffmpeg_exit(1);
516     }
517     if (*size < new_size) {
518         uint8_t *tmp = av_realloc(array, new_size*elem_size);
519         if (!tmp) {
520             fprintf(stderr, "Could not alloc buffer.\n");
521             ffmpeg_exit(1);
522         }
523         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
524         *size = new_size;
525         return tmp;
526     }
527     return array;
528 }
529
530 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
531 {
532     if(codec && codec->sample_fmts){
533         const enum AVSampleFormat *p= codec->sample_fmts;
534         for(; *p!=-1; p++){
535             if(*p == st->codec->sample_fmt)
536                 break;
537         }
538         if (*p == -1) {
539             av_log(NULL, AV_LOG_WARNING,
540                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
541                    av_get_sample_fmt_name(st->codec->sample_fmt),
542                    codec->name,
543                    av_get_sample_fmt_name(codec->sample_fmts[0]));
544             st->codec->sample_fmt = codec->sample_fmts[0];
545         }
546     }
547 }
548
549 static void choose_sample_rate(AVStream *st, AVCodec *codec)
550 {
551     if(codec && codec->supported_samplerates){
552         const int *p= codec->supported_samplerates;
553         int best=0;
554         int best_dist=INT_MAX;
555         for(; *p; p++){
556             int dist= abs(st->codec->sample_rate - *p);
557             if(dist < best_dist){
558                 best_dist= dist;
559                 best= *p;
560             }
561         }
562         if(best_dist){
563             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
564         }
565         st->codec->sample_rate= best;
566     }
567 }
568
569 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
570 {
571     if(codec && codec->pix_fmts){
572         const enum PixelFormat *p= codec->pix_fmts;
573         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
574             if(st->codec->codec_id==CODEC_ID_MJPEG){
575                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
576             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
577                 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};
578             }
579         }
580         for(; *p!=-1; p++){
581             if(*p == st->codec->pix_fmt)
582                 break;
583         }
584         if (*p == -1) {
585             if(st->codec->pix_fmt != PIX_FMT_NONE)
586                 av_log(NULL, AV_LOG_WARNING,
587                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
588                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
589                         codec->name,
590                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
591             st->codec->pix_fmt = codec->pix_fmts[0];
592         }
593     }
594 }
595
596 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
597 {
598     int idx = oc->nb_streams - 1;
599     AVOutputStream *ost;
600
601     output_streams_for_file[file_idx] =
602         grow_array(output_streams_for_file[file_idx],
603                    sizeof(*output_streams_for_file[file_idx]),
604                    &nb_output_streams_for_file[file_idx],
605                    oc->nb_streams);
606     ost = output_streams_for_file[file_idx][idx] =
607         av_mallocz(sizeof(AVOutputStream));
608     if (!ost) {
609         fprintf(stderr, "Could not alloc output stream\n");
610         ffmpeg_exit(1);
611     }
612     ost->file_index = file_idx;
613     ost->index = idx;
614
615     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
616     return ost;
617 }
618
619 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
620 {
621     int i, err;
622     AVFormatContext *ic;
623     int nopts = 0;
624
625     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
626     if (err < 0)
627         return err;
628     /* copy stream format */
629     s->nb_streams = 0;
630     for(i=0;i<ic->nb_streams;i++) {
631         AVStream *st;
632         AVCodec *codec;
633
634         s->nb_streams++;
635
636         // FIXME: a more elegant solution is needed
637         st = av_mallocz(sizeof(AVStream));
638         memcpy(st, ic->streams[i], sizeof(AVStream));
639         st->codec = avcodec_alloc_context();
640         if (!st->codec) {
641             print_error(filename, AVERROR(ENOMEM));
642             ffmpeg_exit(1);
643         }
644         avcodec_copy_context(st->codec, ic->streams[i]->codec);
645         s->streams[i] = st;
646
647         codec = avcodec_find_encoder(st->codec->codec_id);
648         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
649             if (audio_stream_copy) {
650                 st->stream_copy = 1;
651             } else
652                 choose_sample_fmt(st, codec);
653         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
654             if (video_stream_copy) {
655                 st->stream_copy = 1;
656             } else
657                 choose_pixel_fmt(st, codec);
658         }
659
660         if(st->codec->flags & CODEC_FLAG_BITEXACT)
661             nopts = 1;
662
663         new_output_stream(s, nb_output_files);
664     }
665
666     if (!nopts)
667         s->timestamp = av_gettime();
668
669     av_close_input_file(ic);
670     return 0;
671 }
672
673 static double
674 get_sync_ipts(const AVOutputStream *ost)
675 {
676     const AVInputStream *ist = ost->sync_ist;
677     return (double)(ist->pts - start_time)/AV_TIME_BASE;
678 }
679
680 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
681     int ret;
682
683     while(bsfc){
684         AVPacket new_pkt= *pkt;
685         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
686                                           &new_pkt.data, &new_pkt.size,
687                                           pkt->data, pkt->size,
688                                           pkt->flags & AV_PKT_FLAG_KEY);
689         if(a>0){
690             av_free_packet(pkt);
691             new_pkt.destruct= av_destruct_packet;
692         } else if(a<0){
693             fprintf(stderr, "%s failed for stream %d, codec %s",
694                     bsfc->filter->name, pkt->stream_index,
695                     avctx->codec ? avctx->codec->name : "copy");
696             print_error("", a);
697             if (exit_on_error)
698                 ffmpeg_exit(1);
699         }
700         *pkt= new_pkt;
701
702         bsfc= bsfc->next;
703     }
704
705     ret= av_interleaved_write_frame(s, pkt);
706     if(ret < 0){
707         print_error("av_interleaved_write_frame()", ret);
708         ffmpeg_exit(1);
709     }
710 }
711
712 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
713
714 static void do_audio_out(AVFormatContext *s,
715                          AVOutputStream *ost,
716                          AVInputStream *ist,
717                          unsigned char *buf, int size)
718 {
719     uint8_t *buftmp;
720     int64_t audio_out_size, audio_buf_size;
721     int64_t allocated_for_size= size;
722
723     int size_out, frame_bytes, ret, resample_changed;
724     AVCodecContext *enc= ost->st->codec;
725     AVCodecContext *dec= ist->st->codec;
726     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
727     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
728     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
729
730 need_realloc:
731     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
732     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
733     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
734     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
735     audio_buf_size*= osize*enc->channels;
736
737     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
738     if(coded_bps > 8*osize)
739         audio_out_size= audio_out_size * coded_bps / (8*osize);
740     audio_out_size += FF_MIN_BUFFER_SIZE;
741
742     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
743         fprintf(stderr, "Buffer sizes too large\n");
744         ffmpeg_exit(1);
745     }
746
747     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
748     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
749     if (!audio_buf || !audio_out){
750         fprintf(stderr, "Out of memory in do_audio_out\n");
751         ffmpeg_exit(1);
752     }
753
754     if (enc->channels != dec->channels)
755         ost->audio_resample = 1;
756
757     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
758                        ost->resample_channels    != dec->channels   ||
759                        ost->resample_sample_rate != dec->sample_rate;
760
761     if ((ost->audio_resample && !ost->resample) || resample_changed) {
762         if (resample_changed) {
763             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",
764                    ist->file_index, ist->index,
765                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
766                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
767             ost->resample_sample_fmt  = dec->sample_fmt;
768             ost->resample_channels    = dec->channels;
769             ost->resample_sample_rate = dec->sample_rate;
770             if (ost->resample)
771                 audio_resample_close(ost->resample);
772         }
773         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
774         if (audio_sync_method <= 1 &&
775             ost->resample_sample_fmt  == enc->sample_fmt &&
776             ost->resample_channels    == enc->channels   &&
777             ost->resample_sample_rate == enc->sample_rate) {
778             ost->resample = NULL;
779             ost->audio_resample = 0;
780         } else {
781             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
782                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
783             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
784                                                    enc->sample_rate, dec->sample_rate,
785                                                    enc->sample_fmt,  dec->sample_fmt,
786                                                    16, 10, 0, 0.8);
787             if (!ost->resample) {
788                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
789                         dec->channels, dec->sample_rate,
790                         enc->channels, enc->sample_rate);
791                 ffmpeg_exit(1);
792             }
793         }
794     }
795
796 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
797     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
798         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
799         if (ost->reformat_ctx)
800             av_audio_convert_free(ost->reformat_ctx);
801         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
802                                                    dec->sample_fmt, 1, NULL, 0);
803         if (!ost->reformat_ctx) {
804             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
805                 av_get_sample_fmt_name(dec->sample_fmt),
806                 av_get_sample_fmt_name(enc->sample_fmt));
807             ffmpeg_exit(1);
808         }
809         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
810     }
811
812     if(audio_sync_method){
813         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
814                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
815         double idelta= delta*dec->sample_rate / enc->sample_rate;
816         int byte_delta= ((int)idelta)*2*dec->channels;
817
818         //FIXME resample delay
819         if(fabs(delta) > 50){
820             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
821                 if(byte_delta < 0){
822                     byte_delta= FFMAX(byte_delta, -size);
823                     size += byte_delta;
824                     buf  -= byte_delta;
825                     if(verbose > 2)
826                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
827                     if(!size)
828                         return;
829                     ist->is_start=0;
830                 }else{
831                     static uint8_t *input_tmp= NULL;
832                     input_tmp= av_realloc(input_tmp, byte_delta + size);
833
834                     if(byte_delta > allocated_for_size - size){
835                         allocated_for_size= byte_delta + (int64_t)size;
836                         goto need_realloc;
837                     }
838                     ist->is_start=0;
839
840                     memset(input_tmp, 0, byte_delta);
841                     memcpy(input_tmp + byte_delta, buf, size);
842                     buf= input_tmp;
843                     size += byte_delta;
844                     if(verbose > 2)
845                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
846                 }
847             }else if(audio_sync_method>1){
848                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
849                 av_assert0(ost->audio_resample);
850                 if(verbose > 2)
851                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
852 //                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));
853                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
854             }
855         }
856     }else
857         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
858                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
859
860     if (ost->audio_resample) {
861         buftmp = audio_buf;
862         size_out = audio_resample(ost->resample,
863                                   (short *)buftmp, (short *)buf,
864                                   size / (dec->channels * isize));
865         size_out = size_out * enc->channels * osize;
866     } else {
867         buftmp = buf;
868         size_out = size;
869     }
870
871     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
872         const void *ibuf[6]= {buftmp};
873         void *obuf[6]= {audio_buf};
874         int istride[6]= {isize};
875         int ostride[6]= {osize};
876         int len= size_out/istride[0];
877         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
878             printf("av_audio_convert() failed\n");
879             if (exit_on_error)
880                 ffmpeg_exit(1);
881             return;
882         }
883         buftmp = audio_buf;
884         size_out = len*osize;
885     }
886
887     /* now encode as many frames as possible */
888     if (enc->frame_size > 1) {
889         /* output resampled raw samples */
890         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
891             fprintf(stderr, "av_fifo_realloc2() failed\n");
892             ffmpeg_exit(1);
893         }
894         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
895
896         frame_bytes = enc->frame_size * osize * enc->channels;
897
898         while (av_fifo_size(ost->fifo) >= frame_bytes) {
899             AVPacket pkt;
900             av_init_packet(&pkt);
901
902             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
903
904             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
905
906             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
907                                        (short *)audio_buf);
908             if (ret < 0) {
909                 fprintf(stderr, "Audio encoding failed\n");
910                 ffmpeg_exit(1);
911             }
912             audio_size += ret;
913             pkt.stream_index= ost->index;
914             pkt.data= audio_out;
915             pkt.size= ret;
916             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
917                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
918             pkt.flags |= AV_PKT_FLAG_KEY;
919             write_frame(s, &pkt, enc, ost->bitstream_filters);
920
921             ost->sync_opts += enc->frame_size;
922         }
923     } else {
924         AVPacket pkt;
925         av_init_packet(&pkt);
926
927         ost->sync_opts += size_out / (osize * enc->channels);
928
929         /* output a pcm frame */
930         /* determine the size of the coded buffer */
931         size_out /= osize;
932         if (coded_bps)
933             size_out = size_out*coded_bps/8;
934
935         if(size_out > audio_out_size){
936             fprintf(stderr, "Internal error, buffer size too small\n");
937             ffmpeg_exit(1);
938         }
939
940         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
941         ret = avcodec_encode_audio(enc, audio_out, size_out,
942                                    (short *)buftmp);
943         if (ret < 0) {
944             fprintf(stderr, "Audio encoding failed\n");
945             ffmpeg_exit(1);
946         }
947         audio_size += ret;
948         pkt.stream_index= ost->index;
949         pkt.data= audio_out;
950         pkt.size= ret;
951         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
952             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
953         pkt.flags |= AV_PKT_FLAG_KEY;
954         write_frame(s, &pkt, enc, ost->bitstream_filters);
955     }
956 }
957
958 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
959 {
960     AVCodecContext *dec;
961     AVPicture *picture2;
962     AVPicture picture_tmp;
963     uint8_t *buf = 0;
964
965     dec = ist->st->codec;
966
967     /* deinterlace : must be done before any resize */
968     if (do_deinterlace) {
969         int size;
970
971         /* create temporary picture */
972         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
973         buf = av_malloc(size);
974         if (!buf)
975             return;
976
977         picture2 = &picture_tmp;
978         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
979
980         if(avpicture_deinterlace(picture2, picture,
981                                  dec->pix_fmt, dec->width, dec->height) < 0) {
982             /* if error, do not deinterlace */
983             fprintf(stderr, "Deinterlacing failed\n");
984             av_free(buf);
985             buf = NULL;
986             picture2 = picture;
987         }
988     } else {
989         picture2 = picture;
990     }
991
992     if (picture != picture2)
993         *picture = *picture2;
994     *bufp = buf;
995 }
996
997 /* we begin to correct av delay at this threshold */
998 #define AV_DELAY_MAX 0.100
999
1000 static void do_subtitle_out(AVFormatContext *s,
1001                             AVOutputStream *ost,
1002                             AVInputStream *ist,
1003                             AVSubtitle *sub,
1004                             int64_t pts)
1005 {
1006     static uint8_t *subtitle_out = NULL;
1007     int subtitle_out_max_size = 1024 * 1024;
1008     int subtitle_out_size, nb, i;
1009     AVCodecContext *enc;
1010     AVPacket pkt;
1011
1012     if (pts == AV_NOPTS_VALUE) {
1013         fprintf(stderr, "Subtitle packets must have a pts\n");
1014         if (exit_on_error)
1015             ffmpeg_exit(1);
1016         return;
1017     }
1018
1019     enc = ost->st->codec;
1020
1021     if (!subtitle_out) {
1022         subtitle_out = av_malloc(subtitle_out_max_size);
1023     }
1024
1025     /* Note: DVB subtitle need one packet to draw them and one other
1026        packet to clear them */
1027     /* XXX: signal it in the codec context ? */
1028     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1029         nb = 2;
1030     else
1031         nb = 1;
1032
1033     for(i = 0; i < nb; i++) {
1034         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1035         // start_display_time is required to be 0
1036         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1037         sub->end_display_time -= sub->start_display_time;
1038         sub->start_display_time = 0;
1039         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1040                                                     subtitle_out_max_size, sub);
1041         if (subtitle_out_size < 0) {
1042             fprintf(stderr, "Subtitle encoding failed\n");
1043             ffmpeg_exit(1);
1044         }
1045
1046         av_init_packet(&pkt);
1047         pkt.stream_index = ost->index;
1048         pkt.data = subtitle_out;
1049         pkt.size = subtitle_out_size;
1050         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1051         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1052             /* XXX: the pts correction is handled here. Maybe handling
1053                it in the codec would be better */
1054             if (i == 0)
1055                 pkt.pts += 90 * sub->start_display_time;
1056             else
1057                 pkt.pts += 90 * sub->end_display_time;
1058         }
1059         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1060     }
1061 }
1062
1063 static int bit_buffer_size= 1024*256;
1064 static uint8_t *bit_buffer= NULL;
1065
1066 static void do_video_out(AVFormatContext *s,
1067                          AVOutputStream *ost,
1068                          AVInputStream *ist,
1069                          AVFrame *in_picture,
1070                          int *frame_size)
1071 {
1072     int nb_frames, i, ret, resample_changed;
1073     AVFrame *final_picture, *formatted_picture, *resampling_dst;
1074     AVCodecContext *enc, *dec;
1075     double sync_ipts;
1076
1077     enc = ost->st->codec;
1078     dec = ist->st->codec;
1079
1080     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1081
1082     /* by default, we output a single frame */
1083     nb_frames = 1;
1084
1085     *frame_size = 0;
1086
1087     if(video_sync_method){
1088         double vdelta = sync_ipts - ost->sync_opts;
1089         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1090         if (vdelta < -1.1)
1091             nb_frames = 0;
1092         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1093             if(vdelta<=-0.6){
1094                 nb_frames=0;
1095             }else if(vdelta>0.6)
1096                 ost->sync_opts= lrintf(sync_ipts);
1097         }else if (vdelta > 1.1)
1098             nb_frames = lrintf(vdelta);
1099 //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);
1100         if (nb_frames == 0){
1101             ++nb_frames_drop;
1102             if (verbose>2)
1103                 fprintf(stderr, "*** drop!\n");
1104         }else if (nb_frames > 1) {
1105             nb_frames_dup += nb_frames - 1;
1106             if (verbose>2)
1107                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1108         }
1109     }else
1110         ost->sync_opts= lrintf(sync_ipts);
1111
1112     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1113     if (nb_frames <= 0)
1114         return;
1115
1116     formatted_picture = in_picture;
1117     final_picture = formatted_picture;
1118     resampling_dst = &ost->pict_tmp;
1119
1120     resample_changed = ost->resample_width   != dec->width  ||
1121                        ost->resample_height  != dec->height ||
1122                        ost->resample_pix_fmt != dec->pix_fmt;
1123
1124     if (resample_changed) {
1125         av_log(NULL, AV_LOG_INFO,
1126                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1127                ist->file_index, ist->index,
1128                ost->resample_width, ost->resample_height, avcodec_get_pix_fmt_name(ost->resample_pix_fmt),
1129                dec->width         , dec->height         , avcodec_get_pix_fmt_name(dec->pix_fmt));
1130         if(!ost->video_resample)
1131             ffmpeg_exit(1);
1132     }
1133
1134 #if !CONFIG_AVFILTER
1135     if (ost->video_resample) {
1136         final_picture = &ost->pict_tmp;
1137         if (resample_changed) {
1138             /* initialize a new scaler context */
1139             sws_freeContext(ost->img_resample_ctx);
1140             ost->img_resample_ctx = sws_getContext(
1141                 ist->st->codec->width,
1142                 ist->st->codec->height,
1143                 ist->st->codec->pix_fmt,
1144                 ost->st->codec->width,
1145                 ost->st->codec->height,
1146                 ost->st->codec->pix_fmt,
1147                 ost->sws_flags, NULL, NULL, NULL);
1148             if (ost->img_resample_ctx == NULL) {
1149                 fprintf(stderr, "Cannot get resampling context\n");
1150                 ffmpeg_exit(1);
1151             }
1152         }
1153         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1154               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1155     }
1156 #endif
1157
1158     /* duplicates frame if needed */
1159     for(i=0;i<nb_frames;i++) {
1160         AVPacket pkt;
1161         av_init_packet(&pkt);
1162         pkt.stream_index= ost->index;
1163
1164         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1165             /* raw pictures are written as AVPicture structure to
1166                avoid any copies. We support temorarily the older
1167                method. */
1168             AVFrame* old_frame = enc->coded_frame;
1169             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1170             pkt.data= (uint8_t *)final_picture;
1171             pkt.size=  sizeof(AVPicture);
1172             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1173             pkt.flags |= AV_PKT_FLAG_KEY;
1174
1175             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1176             enc->coded_frame = old_frame;
1177         } else {
1178             AVFrame big_picture;
1179
1180             big_picture= *final_picture;
1181             /* better than nothing: use input picture interlaced
1182                settings */
1183             big_picture.interlaced_frame = in_picture->interlaced_frame;
1184             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1185                 if(top_field_first == -1)
1186                     big_picture.top_field_first = in_picture->top_field_first;
1187                 else
1188                     big_picture.top_field_first = top_field_first;
1189             }
1190
1191             /* handles sameq here. This is not correct because it may
1192                not be a global option */
1193             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
1194             if(!me_threshold)
1195                 big_picture.pict_type = 0;
1196 //            big_picture.pts = AV_NOPTS_VALUE;
1197             big_picture.pts= ost->sync_opts;
1198 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1199 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1200             if (ost->forced_kf_index < ost->forced_kf_count &&
1201                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1202                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1203                 ost->forced_kf_index++;
1204             }
1205             ret = avcodec_encode_video(enc,
1206                                        bit_buffer, bit_buffer_size,
1207                                        &big_picture);
1208             if (ret < 0) {
1209                 fprintf(stderr, "Video encoding failed\n");
1210                 ffmpeg_exit(1);
1211             }
1212
1213             if(ret>0){
1214                 pkt.data= bit_buffer;
1215                 pkt.size= ret;
1216                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1217                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1218 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1219    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1220    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1221
1222                 if(enc->coded_frame->key_frame)
1223                     pkt.flags |= AV_PKT_FLAG_KEY;
1224                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1225                 *frame_size = ret;
1226                 video_size += ret;
1227                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1228                 //        enc->frame_number-1, ret, enc->pict_type);
1229                 /* if two pass, output log */
1230                 if (ost->logfile && enc->stats_out) {
1231                     fprintf(ost->logfile, "%s", enc->stats_out);
1232                 }
1233             }
1234         }
1235         ost->sync_opts++;
1236         ost->frame_number++;
1237     }
1238 }
1239
1240 static double psnr(double d){
1241     return -10.0*log(d)/log(10.0);
1242 }
1243
1244 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1245                            int frame_size)
1246 {
1247     AVCodecContext *enc;
1248     int frame_number;
1249     double ti1, bitrate, avg_bitrate;
1250
1251     /* this is executed just the first time do_video_stats is called */
1252     if (!vstats_file) {
1253         vstats_file = fopen(vstats_filename, "w");
1254         if (!vstats_file) {
1255             perror("fopen");
1256             ffmpeg_exit(1);
1257         }
1258     }
1259
1260     enc = ost->st->codec;
1261     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1262         frame_number = ost->frame_number;
1263         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1264         if (enc->flags&CODEC_FLAG_PSNR)
1265             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1266
1267         fprintf(vstats_file,"f_size= %6d ", frame_size);
1268         /* compute pts value */
1269         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1270         if (ti1 < 0.01)
1271             ti1 = 0.01;
1272
1273         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1274         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1275         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1276             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1277         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1278     }
1279 }
1280
1281 static void print_report(AVFormatContext **output_files,
1282                          AVOutputStream **ost_table, int nb_ostreams,
1283                          int is_last_report)
1284 {
1285     char buf[1024];
1286     AVOutputStream *ost;
1287     AVFormatContext *oc;
1288     int64_t total_size;
1289     AVCodecContext *enc;
1290     int frame_number, vid, i;
1291     double bitrate, ti1, pts;
1292     static int64_t last_time = -1;
1293     static int qp_histogram[52];
1294
1295     if (!is_last_report) {
1296         int64_t cur_time;
1297         /* display the report every 0.5 seconds */
1298         cur_time = av_gettime();
1299         if (last_time == -1) {
1300             last_time = cur_time;
1301             return;
1302         }
1303         if ((cur_time - last_time) < 500000)
1304             return;
1305         last_time = cur_time;
1306     }
1307
1308
1309     oc = output_files[0];
1310
1311     total_size = avio_size(oc->pb);
1312     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1313         total_size= avio_tell(oc->pb);
1314
1315     buf[0] = '\0';
1316     ti1 = 1e10;
1317     vid = 0;
1318     for(i=0;i<nb_ostreams;i++) {
1319         float q = -1;
1320         ost = ost_table[i];
1321         enc = ost->st->codec;
1322         if (!ost->st->stream_copy && enc->coded_frame)
1323             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1324         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1325             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1326         }
1327         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1328             float t = (av_gettime()-timer_start) / 1000000.0;
1329
1330             frame_number = ost->frame_number;
1331             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1332                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1333             if(is_last_report)
1334                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1335             if(qp_hist){
1336                 int j;
1337                 int qp = lrintf(q);
1338                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1339                     qp_histogram[qp]++;
1340                 for(j=0; j<32; j++)
1341                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1342             }
1343             if (enc->flags&CODEC_FLAG_PSNR){
1344                 int j;
1345                 double error, error_sum=0;
1346                 double scale, scale_sum=0;
1347                 char type[3]= {'Y','U','V'};
1348                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1349                 for(j=0; j<3; j++){
1350                     if(is_last_report){
1351                         error= enc->error[j];
1352                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1353                     }else{
1354                         error= enc->coded_frame->error[j];
1355                         scale= enc->width*enc->height*255.0*255.0;
1356                     }
1357                     if(j) scale/=4;
1358                     error_sum += error;
1359                     scale_sum += scale;
1360                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1361                 }
1362                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1363             }
1364             vid = 1;
1365         }
1366         /* compute min output value */
1367         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1368         if ((pts < ti1) && (pts > 0))
1369             ti1 = pts;
1370     }
1371     if (ti1 < 0.01)
1372         ti1 = 0.01;
1373
1374     if (verbose > 0 || is_last_report) {
1375         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1376
1377         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1378             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1379             (double)total_size / 1024, ti1, bitrate);
1380
1381         if (nb_frames_dup || nb_frames_drop)
1382           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1383                   nb_frames_dup, nb_frames_drop);
1384
1385         if (verbose >= 0)
1386             fprintf(stderr, "%s    \r", buf);
1387
1388         fflush(stderr);
1389     }
1390
1391     if (is_last_report && verbose >= 0){
1392         int64_t raw= audio_size + video_size + extra_size;
1393         fprintf(stderr, "\n");
1394         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1395                 video_size/1024.0,
1396                 audio_size/1024.0,
1397                 extra_size/1024.0,
1398                 100.0*(total_size - raw)/raw
1399         );
1400     }
1401 }
1402
1403 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1404 {
1405     int fill_char = 0x00;
1406     if (sample_fmt == AV_SAMPLE_FMT_U8)
1407         fill_char = 0x80;
1408     memset(buf, fill_char, size);
1409 }
1410
1411 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1412 static int output_packet(AVInputStream *ist, int ist_index,
1413                          AVOutputStream **ost_table, int nb_ostreams,
1414                          const AVPacket *pkt)
1415 {
1416     AVFormatContext *os;
1417     AVOutputStream *ost;
1418     int ret, i;
1419     int got_output;
1420     AVFrame picture;
1421     void *buffer_to_free = NULL;
1422     static unsigned int samples_size= 0;
1423     AVSubtitle subtitle, *subtitle_to_free;
1424     int64_t pkt_pts = AV_NOPTS_VALUE;
1425 #if CONFIG_AVFILTER
1426     int frame_available;
1427 #endif
1428
1429     AVPacket avpkt;
1430     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
1431
1432     if(ist->next_pts == AV_NOPTS_VALUE)
1433         ist->next_pts= ist->pts;
1434
1435     if (pkt == NULL) {
1436         /* EOF handling */
1437         av_init_packet(&avpkt);
1438         avpkt.data = NULL;
1439         avpkt.size = 0;
1440         goto handle_eof;
1441     } else {
1442         avpkt = *pkt;
1443     }
1444
1445     if(pkt->dts != AV_NOPTS_VALUE)
1446         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1447     if(pkt->pts != AV_NOPTS_VALUE)
1448         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1449
1450     //while we have more to decode or while the decoder did output something on EOF
1451     while (avpkt.size > 0 || (!pkt && got_output)) {
1452         uint8_t *data_buf, *decoded_data_buf;
1453         int data_size, decoded_data_size;
1454     handle_eof:
1455         ist->pts= ist->next_pts;
1456
1457         if(avpkt.size && avpkt.size != pkt->size &&
1458            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1459             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1460             ist->showed_multi_packet_warning=1;
1461         }
1462
1463         /* decode the packet if needed */
1464         decoded_data_buf = NULL; /* fail safe */
1465         decoded_data_size= 0;
1466         data_buf  = avpkt.data;
1467         data_size = avpkt.size;
1468         subtitle_to_free = NULL;
1469         if (ist->decoding_needed) {
1470             switch(ist->st->codec->codec_type) {
1471             case AVMEDIA_TYPE_AUDIO:{
1472                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1473                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1474                     av_free(samples);
1475                     samples= av_malloc(samples_size);
1476                 }
1477                 decoded_data_size= samples_size;
1478                     /* XXX: could avoid copy if PCM 16 bits with same
1479                        endianness as CPU */
1480                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1481                                             &avpkt);
1482                 if (ret < 0)
1483                     goto fail_decode;
1484                 avpkt.data += ret;
1485                 avpkt.size -= ret;
1486                 data_size   = ret;
1487                 got_output  = decoded_data_size > 0;
1488                 /* Some bug in mpeg audio decoder gives */
1489                 /* decoded_data_size < 0, it seems they are overflows */
1490                 if (!got_output) {
1491                     /* no audio frame */
1492                     continue;
1493                 }
1494                 decoded_data_buf = (uint8_t *)samples;
1495                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1496                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1497                 break;}
1498             case AVMEDIA_TYPE_VIDEO:
1499                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1500                     /* XXX: allocate picture correctly */
1501                     avcodec_get_frame_defaults(&picture);
1502                     avpkt.pts = pkt_pts;
1503                     avpkt.dts = ist->pts;
1504                     pkt_pts = AV_NOPTS_VALUE;
1505
1506                     ret = avcodec_decode_video2(ist->st->codec,
1507                                                 &picture, &got_output, &avpkt);
1508                     ist->st->quality= picture.quality;
1509                     if (ret < 0)
1510                         goto fail_decode;
1511                     if (!got_output) {
1512                         /* no picture yet */
1513                         goto discard_packet;
1514                     }
1515                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1516                     if (ist->st->codec->time_base.num != 0) {
1517                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1518                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1519                                           ist->st->codec->time_base.num * ticks) /
1520                             ist->st->codec->time_base.den;
1521                     }
1522                     avpkt.size = 0;
1523                     buffer_to_free = NULL;
1524                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1525                     break;
1526             case AVMEDIA_TYPE_SUBTITLE:
1527                 ret = avcodec_decode_subtitle2(ist->st->codec,
1528                                                &subtitle, &got_output, &avpkt);
1529                 if (ret < 0)
1530                     goto fail_decode;
1531                 if (!got_output) {
1532                     goto discard_packet;
1533                 }
1534                 subtitle_to_free = &subtitle;
1535                 avpkt.size = 0;
1536                 break;
1537             default:
1538                 goto fail_decode;
1539             }
1540         } else {
1541             switch(ist->st->codec->codec_type) {
1542             case AVMEDIA_TYPE_AUDIO:
1543                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1544                     ist->st->codec->sample_rate;
1545                 break;
1546             case AVMEDIA_TYPE_VIDEO:
1547                 if (ist->st->codec->time_base.num != 0) {
1548                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1549                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1550                                       ist->st->codec->time_base.num * ticks) /
1551                         ist->st->codec->time_base.den;
1552                 }
1553                 break;
1554             }
1555             ret = avpkt.size;
1556             avpkt.size = 0;
1557         }
1558
1559 #if CONFIG_AVFILTER
1560         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1561             for (i = 0; i < nb_ostreams; i++) {
1562                 ost = ost_table[i];
1563                 if (ost->input_video_filter && ost->source_index == ist_index) {
1564                     AVRational sar;
1565                     if (ist->st->sample_aspect_ratio.num)
1566                         sar = ist->st->sample_aspect_ratio;
1567                     else
1568                         sar = ist->st->codec->sample_aspect_ratio;
1569                     // add it to be filtered
1570                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
1571                                              ist->pts,
1572                                              sar);
1573                 }
1574             }
1575         }
1576 #endif
1577
1578         // preprocess audio (volume)
1579         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1580             if (audio_volume != 256) {
1581                 short *volp;
1582                 volp = samples;
1583                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1584                     int v = ((*volp) * audio_volume + 128) >> 8;
1585                     if (v < -32768) v = -32768;
1586                     if (v >  32767) v = 32767;
1587                     *volp++ = v;
1588                 }
1589             }
1590         }
1591
1592         /* frame rate emulation */
1593         if (rate_emu) {
1594             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1595             int64_t now = av_gettime() - ist->start;
1596             if (pts > now)
1597                 usleep(pts - now);
1598         }
1599         /* if output time reached then transcode raw format,
1600            encode packets and output them */
1601         if (start_time == 0 || ist->pts >= start_time)
1602             for(i=0;i<nb_ostreams;i++) {
1603                 int frame_size;
1604
1605                 ost = ost_table[i];
1606                 if (ost->source_index == ist_index) {
1607 #if CONFIG_AVFILTER
1608                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1609                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1610                 while (frame_available) {
1611                     AVRational ist_pts_tb;
1612                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1613                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1614                     if (ost->picref)
1615                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1616 #endif
1617                     os = output_files[ost->file_index];
1618
1619                     /* set the input output pts pairs */
1620                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1621
1622                     if (ost->encoding_needed) {
1623                         av_assert0(ist->decoding_needed);
1624                         switch(ost->st->codec->codec_type) {
1625                         case AVMEDIA_TYPE_AUDIO:
1626                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1627                             break;
1628                         case AVMEDIA_TYPE_VIDEO:
1629 #if CONFIG_AVFILTER
1630                             if (ost->picref->video && !ost->frame_aspect_ratio)
1631                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1632 #endif
1633                             do_video_out(os, ost, ist, &picture, &frame_size);
1634                             if (vstats_filename && frame_size)
1635                                 do_video_stats(os, ost, frame_size);
1636                             break;
1637                         case AVMEDIA_TYPE_SUBTITLE:
1638                             do_subtitle_out(os, ost, ist, &subtitle,
1639                                             pkt->pts);
1640                             break;
1641                         default:
1642                             abort();
1643                         }
1644                     } else {
1645                         AVFrame avframe; //FIXME/XXX remove this
1646                         AVPacket opkt;
1647                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1648
1649                         av_init_packet(&opkt);
1650
1651                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1652 #if !CONFIG_AVFILTER
1653                             continue;
1654 #else
1655                             goto cont;
1656 #endif
1657
1658                         /* no reencoding needed : output the packet directly */
1659                         /* force the input stream PTS */
1660
1661                         avcodec_get_frame_defaults(&avframe);
1662                         ost->st->codec->coded_frame= &avframe;
1663                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1664
1665                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1666                             audio_size += data_size;
1667                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1668                             video_size += data_size;
1669                             ost->sync_opts++;
1670                         }
1671
1672                         opkt.stream_index= ost->index;
1673                         if(pkt->pts != AV_NOPTS_VALUE)
1674                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1675                         else
1676                             opkt.pts= AV_NOPTS_VALUE;
1677
1678                         if (pkt->dts == AV_NOPTS_VALUE)
1679                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1680                         else
1681                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1682                         opkt.dts -= ost_tb_start_time;
1683
1684                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1685                         opkt.flags= pkt->flags;
1686
1687                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1688                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1689                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1690                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1691                            ) {
1692                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1693                                 opkt.destruct= av_destruct_packet;
1694                         } else {
1695                             opkt.data = data_buf;
1696                             opkt.size = data_size;
1697                         }
1698
1699                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1700                         ost->st->codec->frame_number++;
1701                         ost->frame_number++;
1702                         av_free_packet(&opkt);
1703                     }
1704 #if CONFIG_AVFILTER
1705                     cont:
1706                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1707                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1708                     if (ost->picref)
1709                         avfilter_unref_buffer(ost->picref);
1710                 }
1711 #endif
1712                 }
1713             }
1714
1715         av_free(buffer_to_free);
1716         /* XXX: allocate the subtitles in the codec ? */
1717         if (subtitle_to_free) {
1718             avsubtitle_free(subtitle_to_free);
1719             subtitle_to_free = NULL;
1720         }
1721     }
1722  discard_packet:
1723     if (pkt == NULL) {
1724         /* EOF handling */
1725
1726         for(i=0;i<nb_ostreams;i++) {
1727             ost = ost_table[i];
1728             if (ost->source_index == ist_index) {
1729                 AVCodecContext *enc= ost->st->codec;
1730                 os = output_files[ost->file_index];
1731
1732                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1733                     continue;
1734                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1735                     continue;
1736
1737                 if (ost->encoding_needed) {
1738                     for(;;) {
1739                         AVPacket pkt;
1740                         int fifo_bytes;
1741                         av_init_packet(&pkt);
1742                         pkt.stream_index= ost->index;
1743
1744                         switch(ost->st->codec->codec_type) {
1745                         case AVMEDIA_TYPE_AUDIO:
1746                             fifo_bytes = av_fifo_size(ost->fifo);
1747                             ret = 0;
1748                             /* encode any samples remaining in fifo */
1749                             if (fifo_bytes > 0) {
1750                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
1751                                 int fs_tmp = enc->frame_size;
1752
1753                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1754                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1755                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1756                                 } else { /* pad */
1757                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1758                                     if (allocated_audio_buf_size < frame_bytes)
1759                                         ffmpeg_exit(1);
1760                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1761                                 }
1762
1763                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1764                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1765                                                           ost->st->time_base.num, enc->sample_rate);
1766                                 enc->frame_size = fs_tmp;
1767                             }
1768                             if(ret <= 0) {
1769                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1770                             }
1771                             if (ret < 0) {
1772                                 fprintf(stderr, "Audio encoding failed\n");
1773                                 ffmpeg_exit(1);
1774                             }
1775                             audio_size += ret;
1776                             pkt.flags |= AV_PKT_FLAG_KEY;
1777                             break;
1778                         case AVMEDIA_TYPE_VIDEO:
1779                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1780                             if (ret < 0) {
1781                                 fprintf(stderr, "Video encoding failed\n");
1782                                 ffmpeg_exit(1);
1783                             }
1784                             video_size += ret;
1785                             if(enc->coded_frame && enc->coded_frame->key_frame)
1786                                 pkt.flags |= AV_PKT_FLAG_KEY;
1787                             if (ost->logfile && enc->stats_out) {
1788                                 fprintf(ost->logfile, "%s", enc->stats_out);
1789                             }
1790                             break;
1791                         default:
1792                             ret=-1;
1793                         }
1794
1795                         if(ret<=0)
1796                             break;
1797                         pkt.data= bit_buffer;
1798                         pkt.size= ret;
1799                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1800                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1801                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1802                     }
1803                 }
1804             }
1805         }
1806     }
1807
1808     return 0;
1809  fail_decode:
1810     return -1;
1811 }
1812
1813 static void print_sdp(AVFormatContext **avc, int n)
1814 {
1815     char sdp[2048];
1816
1817     av_sdp_create(avc, n, sdp, sizeof(sdp));
1818     printf("SDP:\n%s\n", sdp);
1819     fflush(stdout);
1820 }
1821
1822 static int copy_chapters(int infile, int outfile)
1823 {
1824     AVFormatContext *is = input_files[infile];
1825     AVFormatContext *os = output_files[outfile];
1826     int i;
1827
1828     for (i = 0; i < is->nb_chapters; i++) {
1829         AVChapter *in_ch = is->chapters[i], *out_ch;
1830         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
1831                                       AV_TIME_BASE_Q, in_ch->time_base);
1832         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
1833                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1834
1835
1836         if (in_ch->end < ts_off)
1837             continue;
1838         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1839             break;
1840
1841         out_ch = av_mallocz(sizeof(AVChapter));
1842         if (!out_ch)
1843             return AVERROR(ENOMEM);
1844
1845         out_ch->id        = in_ch->id;
1846         out_ch->time_base = in_ch->time_base;
1847         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
1848         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
1849
1850         if (metadata_chapters_autocopy)
1851             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
1852
1853         os->nb_chapters++;
1854         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1855         if (!os->chapters)
1856             return AVERROR(ENOMEM);
1857         os->chapters[os->nb_chapters - 1] = out_ch;
1858     }
1859     return 0;
1860 }
1861
1862 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
1863                                     AVCodecContext *avctx)
1864 {
1865     char *p;
1866     int n = 1, i;
1867     int64_t t;
1868
1869     for (p = kf; *p; p++)
1870         if (*p == ',')
1871             n++;
1872     ost->forced_kf_count = n;
1873     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1874     if (!ost->forced_kf_pts) {
1875         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1876         ffmpeg_exit(1);
1877     }
1878     for (i = 0; i < n; i++) {
1879         p = i ? strchr(p, ',') + 1 : kf;
1880         t = parse_time_or_die("force_key_frames", p, 1);
1881         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1882     }
1883 }
1884
1885 /*
1886  * The following code is the main loop of the file converter
1887  */
1888 static int transcode(AVFormatContext **output_files,
1889                      int nb_output_files,
1890                      AVFormatContext **input_files,
1891                      int nb_input_files,
1892                      AVStreamMap *stream_maps, int nb_stream_maps)
1893 {
1894     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1895     AVFormatContext *is, *os;
1896     AVCodecContext *codec, *icodec;
1897     AVOutputStream *ost, **ost_table = NULL;
1898     AVInputStream *ist, **ist_table = NULL;
1899     AVInputFile *file_table;
1900     char error[1024];
1901     int want_sdp = 1;
1902     uint8_t no_packet[MAX_FILES]={0};
1903     int no_packet_count=0;
1904
1905     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1906     if (!file_table)
1907         goto fail;
1908
1909     /* input stream init */
1910     j = 0;
1911     for(i=0;i<nb_input_files;i++) {
1912         is = input_files[i];
1913         file_table[i].ist_index = j;
1914         file_table[i].nb_streams = is->nb_streams;
1915         j += is->nb_streams;
1916     }
1917     nb_istreams = j;
1918
1919     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1920     if (!ist_table)
1921         goto fail;
1922
1923     for(i=0;i<nb_istreams;i++) {
1924         ist = av_mallocz(sizeof(AVInputStream));
1925         if (!ist)
1926             goto fail;
1927         ist_table[i] = ist;
1928     }
1929     j = 0;
1930     for(i=0;i<nb_input_files;i++) {
1931         is = input_files[i];
1932         for(k=0;k<is->nb_streams;k++) {
1933             ist = ist_table[j++];
1934             ist->st = is->streams[k];
1935             ist->file_index = i;
1936             ist->index = k;
1937             ist->discard = 1; /* the stream is discarded by default
1938                                  (changed later) */
1939
1940             if (rate_emu) {
1941                 ist->start = av_gettime();
1942             }
1943         }
1944     }
1945
1946     /* output stream init */
1947     nb_ostreams = 0;
1948     for(i=0;i<nb_output_files;i++) {
1949         os = output_files[i];
1950         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1951             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1952             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1953             ret = AVERROR(EINVAL);
1954             goto fail;
1955         }
1956         nb_ostreams += os->nb_streams;
1957     }
1958     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1959         fprintf(stderr, "Number of stream maps must match number of output streams\n");
1960         ret = AVERROR(EINVAL);
1961         goto fail;
1962     }
1963
1964     /* Sanity check the mapping args -- do the input files & streams exist? */
1965     for(i=0;i<nb_stream_maps;i++) {
1966         int fi = stream_maps[i].file_index;
1967         int si = stream_maps[i].stream_index;
1968
1969         if (fi < 0 || fi > nb_input_files - 1 ||
1970             si < 0 || si > file_table[fi].nb_streams - 1) {
1971             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1972             ret = AVERROR(EINVAL);
1973             goto fail;
1974         }
1975         fi = stream_maps[i].sync_file_index;
1976         si = stream_maps[i].sync_stream_index;
1977         if (fi < 0 || fi > nb_input_files - 1 ||
1978             si < 0 || si > file_table[fi].nb_streams - 1) {
1979             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1980             ret = AVERROR(EINVAL);
1981             goto fail;
1982         }
1983     }
1984
1985     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1986     if (!ost_table)
1987         goto fail;
1988     n = 0;
1989     for(k=0;k<nb_output_files;k++) {
1990         os = output_files[k];
1991         for(i=0;i<os->nb_streams;i++,n++) {
1992             int found;
1993             ost = ost_table[n] = output_streams_for_file[k][i];
1994             ost->st = os->streams[i];
1995             if (nb_stream_maps > 0) {
1996                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
1997                     stream_maps[n].stream_index;
1998
1999                 /* Sanity check that the stream types match */
2000                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2001                     int i= ost->file_index;
2002                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2003                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2004                         stream_maps[n].file_index, stream_maps[n].stream_index,
2005                         ost->file_index, ost->index);
2006                     ffmpeg_exit(1);
2007                 }
2008
2009             } else {
2010                 int best_nb_frames=-1;
2011                 /* get corresponding input stream index : we select the first one with the right type */
2012                 found = 0;
2013                 for(j=0;j<nb_istreams;j++) {
2014                     int skip=0;
2015                     ist = ist_table[j];
2016                     if(opt_programid){
2017                         int pi,si;
2018                         AVFormatContext *f= input_files[ ist->file_index ];
2019                         skip=1;
2020                         for(pi=0; pi<f->nb_programs; pi++){
2021                             AVProgram *p= f->programs[pi];
2022                             if(p->id == opt_programid)
2023                                 for(si=0; si<p->nb_stream_indexes; si++){
2024                                     if(f->streams[ p->stream_index[si] ] == ist->st)
2025                                         skip=0;
2026                                 }
2027                         }
2028                     }
2029                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2030                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
2031                         if(best_nb_frames < ist->st->codec_info_nb_frames){
2032                             best_nb_frames= ist->st->codec_info_nb_frames;
2033                             ost->source_index = j;
2034                             found = 1;
2035                         }
2036                     }
2037                 }
2038
2039                 if (!found) {
2040                     if(! opt_programid) {
2041                         /* try again and reuse existing stream */
2042                         for(j=0;j<nb_istreams;j++) {
2043                             ist = ist_table[j];
2044                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
2045                                 && ist->st->discard != AVDISCARD_ALL) {
2046                                 ost->source_index = j;
2047                                 found = 1;
2048                             }
2049                         }
2050                     }
2051                     if (!found) {
2052                         int i= ost->file_index;
2053                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2054                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2055                                 ost->file_index, ost->index);
2056                         ffmpeg_exit(1);
2057                     }
2058                 }
2059             }
2060             ist = ist_table[ost->source_index];
2061             ist->discard = 0;
2062             ost->sync_ist = (nb_stream_maps > 0) ?
2063                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2064                          stream_maps[n].sync_stream_index] : ist;
2065         }
2066     }
2067
2068     /* for each output stream, we compute the right encoding parameters */
2069     for(i=0;i<nb_ostreams;i++) {
2070         ost = ost_table[i];
2071         os = output_files[ost->file_index];
2072         ist = ist_table[ost->source_index];
2073
2074         codec = ost->st->codec;
2075         icodec = ist->st->codec;
2076
2077         if (metadata_streams_autocopy)
2078             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
2079                              AV_METADATA_DONT_OVERWRITE);
2080
2081         ost->st->disposition = ist->st->disposition;
2082         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2083         codec->chroma_sample_location = icodec->chroma_sample_location;
2084
2085         if (ost->st->stream_copy) {
2086             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2087
2088             if (extra_size > INT_MAX)
2089                 goto fail;
2090
2091             /* if stream_copy is selected, no need to decode or encode */
2092             codec->codec_id = icodec->codec_id;
2093             codec->codec_type = icodec->codec_type;
2094
2095             if(!codec->codec_tag){
2096                 if(   !os->oformat->codec_tag
2097                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2098                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2099                     codec->codec_tag = icodec->codec_tag;
2100             }
2101
2102             codec->bit_rate = icodec->bit_rate;
2103             codec->rc_max_rate    = icodec->rc_max_rate;
2104             codec->rc_buffer_size = icodec->rc_buffer_size;
2105             codec->extradata= av_mallocz(extra_size);
2106             if (!codec->extradata)
2107                 goto fail;
2108             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2109             codec->extradata_size= icodec->extradata_size;
2110             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){
2111                 codec->time_base = icodec->time_base;
2112                 codec->time_base.num *= icodec->ticks_per_frame;
2113                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2114                           codec->time_base.num, codec->time_base.den, INT_MAX);
2115             }else
2116                 codec->time_base = ist->st->time_base;
2117             switch(codec->codec_type) {
2118             case AVMEDIA_TYPE_AUDIO:
2119                 if(audio_volume != 256) {
2120                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2121                     ffmpeg_exit(1);
2122                 }
2123                 codec->channel_layout = icodec->channel_layout;
2124                 codec->sample_rate = icodec->sample_rate;
2125                 codec->channels = icodec->channels;
2126                 codec->frame_size = icodec->frame_size;
2127                 codec->audio_service_type = icodec->audio_service_type;
2128                 codec->block_align= icodec->block_align;
2129                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2130                     codec->block_align= 0;
2131                 if(codec->codec_id == CODEC_ID_AC3)
2132                     codec->block_align= 0;
2133                 break;
2134             case AVMEDIA_TYPE_VIDEO:
2135                 codec->pix_fmt = icodec->pix_fmt;
2136                 codec->width = icodec->width;
2137                 codec->height = icodec->height;
2138                 codec->has_b_frames = icodec->has_b_frames;
2139                 if (!codec->sample_aspect_ratio.num) {
2140                     codec->sample_aspect_ratio =
2141                     ost->st->sample_aspect_ratio =
2142                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2143                         ist->st->codec->sample_aspect_ratio.num ?
2144                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2145                 }
2146                 break;
2147             case AVMEDIA_TYPE_SUBTITLE:
2148                 codec->width = icodec->width;
2149                 codec->height = icodec->height;
2150                 break;
2151             case AVMEDIA_TYPE_DATA:
2152                 break;
2153             default:
2154                 abort();
2155             }
2156         } else {
2157             switch(codec->codec_type) {
2158             case AVMEDIA_TYPE_AUDIO:
2159                 ost->fifo= av_fifo_alloc(1024);
2160                 if(!ost->fifo)
2161                     goto fail;
2162                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2163                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2164                 icodec->request_channels = codec->channels;
2165                 ist->decoding_needed = 1;
2166                 ost->encoding_needed = 1;
2167                 ost->resample_sample_fmt  = icodec->sample_fmt;
2168                 ost->resample_sample_rate = icodec->sample_rate;
2169                 ost->resample_channels    = icodec->channels;
2170                 break;
2171             case AVMEDIA_TYPE_VIDEO:
2172                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2173                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2174                     ffmpeg_exit(1);
2175                 }
2176                 ost->video_resample = codec->width   != icodec->width  ||
2177                                       codec->height  != icodec->height ||
2178                                       codec->pix_fmt != icodec->pix_fmt;
2179                 if (ost->video_resample) {
2180 #if !CONFIG_AVFILTER
2181                     avcodec_get_frame_defaults(&ost->pict_tmp);
2182                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2183                                          codec->width, codec->height)) {
2184                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2185                         ffmpeg_exit(1);
2186                     }
2187                     ost->img_resample_ctx = sws_getContext(
2188                         icodec->width,
2189                         icodec->height,
2190                             icodec->pix_fmt,
2191                             codec->width,
2192                             codec->height,
2193                             codec->pix_fmt,
2194                             ost->sws_flags, NULL, NULL, NULL);
2195                     if (ost->img_resample_ctx == NULL) {
2196                         fprintf(stderr, "Cannot get resampling context\n");
2197                         ffmpeg_exit(1);
2198                     }
2199 #endif
2200                     codec->bits_per_raw_sample= 0;
2201                 }
2202                 ost->resample_height = icodec->height;
2203                 ost->resample_width  = icodec->width;
2204                 ost->resample_pix_fmt= icodec->pix_fmt;
2205                 ost->encoding_needed = 1;
2206                 ist->decoding_needed = 1;
2207
2208 #if CONFIG_AVFILTER
2209                 if (configure_video_filters(ist, ost)) {
2210                     fprintf(stderr, "Error opening filters!\n");
2211                     exit(1);
2212                 }
2213 #endif
2214                 break;
2215             case AVMEDIA_TYPE_SUBTITLE:
2216                 ost->encoding_needed = 1;
2217                 ist->decoding_needed = 1;
2218                 break;
2219             default:
2220                 abort();
2221                 break;
2222             }
2223             /* two pass mode */
2224             if (ost->encoding_needed &&
2225                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2226                 char logfilename[1024];
2227                 FILE *f;
2228
2229                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2230                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2231                          i);
2232                 if (codec->flags & CODEC_FLAG_PASS1) {
2233                     f = fopen(logfilename, "wb");
2234                     if (!f) {
2235                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2236                         ffmpeg_exit(1);
2237                     }
2238                     ost->logfile = f;
2239                 } else {
2240                     char  *logbuffer;
2241                     size_t logbuffer_size;
2242                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2243                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2244                         ffmpeg_exit(1);
2245                     }
2246                     codec->stats_in = logbuffer;
2247                 }
2248             }
2249         }
2250         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2251             int size= codec->width * codec->height;
2252             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2253         }
2254     }
2255
2256     if (!bit_buffer)
2257         bit_buffer = av_malloc(bit_buffer_size);
2258     if (!bit_buffer) {
2259         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2260                 bit_buffer_size);
2261         ret = AVERROR(ENOMEM);
2262         goto fail;
2263     }
2264
2265     /* open each encoder */
2266     for(i=0;i<nb_ostreams;i++) {
2267         ost = ost_table[i];
2268         if (ost->encoding_needed) {
2269             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
2270             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
2271             if (!codec)
2272                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2273             if (!codec) {
2274                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2275                          ost->st->codec->codec_id, ost->file_index, ost->index);
2276                 ret = AVERROR(EINVAL);
2277                 goto dump_format;
2278             }
2279             if (dec->subtitle_header) {
2280                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2281                 if (!ost->st->codec->subtitle_header) {
2282                     ret = AVERROR(ENOMEM);
2283                     goto dump_format;
2284                 }
2285                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2286                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2287             }
2288             if (avcodec_open(ost->st->codec, codec) < 0) {
2289                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2290                         ost->file_index, ost->index);
2291                 ret = AVERROR(EINVAL);
2292                 goto dump_format;
2293             }
2294             extra_size += ost->st->codec->extradata_size;
2295         }
2296     }
2297
2298     /* open each decoder */
2299     for(i=0;i<nb_istreams;i++) {
2300         ist = ist_table[i];
2301         if (ist->decoding_needed) {
2302             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
2303             if (!codec)
2304                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2305             if (!codec) {
2306                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2307                         ist->st->codec->codec_id, ist->file_index, ist->index);
2308                 ret = AVERROR(EINVAL);
2309                 goto dump_format;
2310             }
2311             if (avcodec_open(ist->st->codec, codec) < 0) {
2312                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2313                         ist->file_index, ist->index);
2314                 ret = AVERROR(EINVAL);
2315                 goto dump_format;
2316             }
2317             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2318             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2319         }
2320     }
2321
2322     /* init pts */
2323     for(i=0;i<nb_istreams;i++) {
2324         AVStream *st;
2325         ist = ist_table[i];
2326         st= ist->st;
2327         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2328         ist->next_pts = AV_NOPTS_VALUE;
2329         init_pts_correction(&ist->pts_ctx);
2330         ist->is_start = 1;
2331     }
2332
2333     /* set meta data information from input file if required */
2334     for (i=0;i<nb_meta_data_maps;i++) {
2335         AVFormatContext *files[2];
2336         AVMetadata      **meta[2];
2337         int j;
2338
2339 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2340         if ((index) < 0 || (index) >= (nb_elems)) {\
2341             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
2342                      (desc), (index));\
2343             ret = AVERROR(EINVAL);\
2344             goto dump_format;\
2345         }
2346
2347         int out_file_index = meta_data_maps[i][0].file;
2348         int in_file_index = meta_data_maps[i][1].file;
2349         if (in_file_index < 0 || out_file_index < 0)
2350             continue;
2351         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
2352         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
2353
2354         files[0] = output_files[out_file_index];
2355         files[1] = input_files[in_file_index];
2356
2357         for (j = 0; j < 2; j++) {
2358             AVMetaDataMap *map = &meta_data_maps[i][j];
2359
2360             switch (map->type) {
2361             case 'g':
2362                 meta[j] = &files[j]->metadata;
2363                 break;
2364             case 's':
2365                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
2366                 meta[j] = &files[j]->streams[map->index]->metadata;
2367                 break;
2368             case 'c':
2369                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
2370                 meta[j] = &files[j]->chapters[map->index]->metadata;
2371                 break;
2372             case 'p':
2373                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
2374                 meta[j] = &files[j]->programs[map->index]->metadata;
2375                 break;
2376             }
2377         }
2378
2379         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
2380     }
2381
2382     /* copy global metadata by default */
2383     if (metadata_global_autocopy) {
2384
2385         for (i = 0; i < nb_output_files; i++)
2386             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
2387                              AV_METADATA_DONT_OVERWRITE);
2388     }
2389
2390     /* copy chapters according to chapter maps */
2391     for (i = 0; i < nb_chapter_maps; i++) {
2392         int infile  = chapter_maps[i].in_file;
2393         int outfile = chapter_maps[i].out_file;
2394
2395         if (infile < 0 || outfile < 0)
2396             continue;
2397         if (infile >= nb_input_files) {
2398             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
2399             ret = AVERROR(EINVAL);
2400             goto dump_format;
2401         }
2402         if (outfile >= nb_output_files) {
2403             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
2404             ret = AVERROR(EINVAL);
2405             goto dump_format;
2406         }
2407         copy_chapters(infile, outfile);
2408     }
2409
2410     /* copy chapters from the first input file that has them*/
2411     if (!nb_chapter_maps)
2412         for (i = 0; i < nb_input_files; i++) {
2413             if (!input_files[i]->nb_chapters)
2414                 continue;
2415
2416             for (j = 0; j < nb_output_files; j++)
2417                 if ((ret = copy_chapters(i, j)) < 0)
2418                     goto dump_format;
2419             break;
2420         }
2421
2422     /* open files and write file headers */
2423     for(i=0;i<nb_output_files;i++) {
2424         os = output_files[i];
2425         if (av_write_header(os) < 0) {
2426             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2427             ret = AVERROR(EINVAL);
2428             goto dump_format;
2429         }
2430         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2431             want_sdp = 0;
2432         }
2433     }
2434
2435  dump_format:
2436     /* dump the file output parameters - cannot be done before in case
2437        of stream copy */
2438     for(i=0;i<nb_output_files;i++) {
2439         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2440     }
2441
2442     /* dump the stream mapping */
2443     if (verbose >= 0) {
2444         fprintf(stderr, "Stream mapping:\n");
2445         for(i=0;i<nb_ostreams;i++) {
2446             ost = ost_table[i];
2447             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2448                     ist_table[ost->source_index]->file_index,
2449                     ist_table[ost->source_index]->index,
2450                     ost->file_index,
2451                     ost->index);
2452             if (ost->sync_ist != ist_table[ost->source_index])
2453                 fprintf(stderr, " [sync #%d.%d]",
2454                         ost->sync_ist->file_index,
2455                         ost->sync_ist->index);
2456             fprintf(stderr, "\n");
2457         }
2458     }
2459
2460     if (ret) {
2461         fprintf(stderr, "%s\n", error);
2462         goto fail;
2463     }
2464
2465     if (want_sdp) {
2466         print_sdp(output_files, nb_output_files);
2467     }
2468
2469     if (verbose >= 0)
2470         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2471     term_init();
2472
2473     timer_start = av_gettime();
2474
2475     for(; received_sigterm == 0;) {
2476         int file_index, ist_index;
2477         AVPacket pkt;
2478         double ipts_min;
2479         double opts_min;
2480
2481     redo:
2482         ipts_min= 1e100;
2483         opts_min= 1e100;
2484
2485         /* select the stream that we must read now by looking at the
2486            smallest output pts */
2487         file_index = -1;
2488         for(i=0;i<nb_ostreams;i++) {
2489             double ipts, opts;
2490             ost = ost_table[i];
2491             os = output_files[ost->file_index];
2492             ist = ist_table[ost->source_index];
2493             if(ist->is_past_recording_time || no_packet[ist->file_index])
2494                 continue;
2495                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2496             ipts = (double)ist->pts;
2497             if (!file_table[ist->file_index].eof_reached){
2498                 if(ipts < ipts_min) {
2499                     ipts_min = ipts;
2500                     if(input_sync ) file_index = ist->file_index;
2501                 }
2502                 if(opts < opts_min) {
2503                     opts_min = opts;
2504                     if(!input_sync) file_index = ist->file_index;
2505                 }
2506             }
2507             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2508                 file_index= -1;
2509                 break;
2510             }
2511         }
2512         /* if none, if is finished */
2513         if (file_index < 0) {
2514             if(no_packet_count){
2515                 no_packet_count=0;
2516                 memset(no_packet, 0, sizeof(no_packet));
2517                 usleep(10000);
2518                 continue;
2519             }
2520             break;
2521         }
2522
2523         /* finish if limit size exhausted */
2524         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2525             break;
2526
2527         /* read a frame from it and output it in the fifo */
2528         is = input_files[file_index];
2529         ret= av_read_frame(is, &pkt);
2530         if(ret == AVERROR(EAGAIN)){
2531             no_packet[file_index]=1;
2532             no_packet_count++;
2533             continue;
2534         }
2535         if (ret < 0) {
2536             file_table[file_index].eof_reached = 1;
2537             if (opt_shortest)
2538                 break;
2539             else
2540                 continue;
2541         }
2542
2543         no_packet_count=0;
2544         memset(no_packet, 0, sizeof(no_packet));
2545
2546         if (do_pkt_dump) {
2547             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2548                              is->streams[pkt.stream_index]);
2549         }
2550         /* the following test is needed in case new streams appear
2551            dynamically in stream : we ignore them */
2552         if (pkt.stream_index >= file_table[file_index].nb_streams)
2553             goto discard_packet;
2554         ist_index = file_table[file_index].ist_index + pkt.stream_index;
2555         ist = ist_table[ist_index];
2556         if (ist->discard)
2557             goto discard_packet;
2558
2559         if (pkt.dts != AV_NOPTS_VALUE)
2560             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2561         if (pkt.pts != AV_NOPTS_VALUE)
2562             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2563
2564         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
2565             && input_files_ts_scale[file_index][pkt.stream_index]){
2566             if(pkt.pts != AV_NOPTS_VALUE)
2567                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2568             if(pkt.dts != AV_NOPTS_VALUE)
2569                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2570         }
2571
2572 //        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);
2573         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2574             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2575             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2576             int64_t delta= pkt_dts - ist->next_pts;
2577             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2578                 input_files_ts_offset[ist->file_index]-= delta;
2579                 if (verbose > 2)
2580                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2581                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2582                 if(pkt.pts != AV_NOPTS_VALUE)
2583                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2584             }
2585         }
2586
2587         /* finish if recording time exhausted */
2588         if (recording_time != INT64_MAX &&
2589             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2590             ist->is_past_recording_time = 1;
2591             goto discard_packet;
2592         }
2593
2594         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2595         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2596
2597             if (verbose >= 0)
2598                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2599                         ist->file_index, ist->index);
2600             if (exit_on_error)
2601                 ffmpeg_exit(1);
2602             av_free_packet(&pkt);
2603             goto redo;
2604         }
2605
2606     discard_packet:
2607         av_free_packet(&pkt);
2608
2609         /* dump report by using the output first video and audio streams */
2610         print_report(output_files, ost_table, nb_ostreams, 0);
2611     }
2612
2613     /* at the end of stream, we must flush the decoder buffers */
2614     for(i=0;i<nb_istreams;i++) {
2615         ist = ist_table[i];
2616         if (ist->decoding_needed) {
2617             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2618         }
2619     }
2620
2621     term_exit();
2622
2623     /* write the trailer if needed and close file */
2624     for(i=0;i<nb_output_files;i++) {
2625         os = output_files[i];
2626         av_write_trailer(os);
2627     }
2628
2629     /* dump report by using the first video and audio streams */
2630     print_report(output_files, ost_table, nb_ostreams, 1);
2631
2632     /* close each encoder */
2633     for(i=0;i<nb_ostreams;i++) {
2634         ost = ost_table[i];
2635         if (ost->encoding_needed) {
2636             av_freep(&ost->st->codec->stats_in);
2637             avcodec_close(ost->st->codec);
2638         }
2639 #if CONFIG_AVFILTER
2640         avfilter_graph_free(&ost->graph);
2641 #endif
2642     }
2643
2644     /* close each decoder */
2645     for(i=0;i<nb_istreams;i++) {
2646         ist = ist_table[i];
2647         if (ist->decoding_needed) {
2648             avcodec_close(ist->st->codec);
2649         }
2650     }
2651
2652     /* finished ! */
2653     ret = 0;
2654
2655  fail:
2656     av_freep(&bit_buffer);
2657     av_free(file_table);
2658
2659     if (ist_table) {
2660         for(i=0;i<nb_istreams;i++) {
2661             ist = ist_table[i];
2662             av_free(ist);
2663         }
2664         av_free(ist_table);
2665     }
2666     if (ost_table) {
2667         for(i=0;i<nb_ostreams;i++) {
2668             ost = ost_table[i];
2669             if (ost) {
2670                 if (ost->st->stream_copy)
2671                     av_freep(&ost->st->codec->extradata);
2672                 if (ost->logfile) {
2673                     fclose(ost->logfile);
2674                     ost->logfile = NULL;
2675                 }
2676                 av_fifo_free(ost->fifo); /* works even if fifo is not
2677                                              initialized but set to zero */
2678                 av_freep(&ost->st->codec->subtitle_header);
2679                 av_free(ost->pict_tmp.data[0]);
2680                 av_free(ost->forced_kf_pts);
2681                 if (ost->video_resample)
2682                     sws_freeContext(ost->img_resample_ctx);
2683                 if (ost->resample)
2684                     audio_resample_close(ost->resample);
2685                 if (ost->reformat_ctx)
2686                     av_audio_convert_free(ost->reformat_ctx);
2687                 av_free(ost);
2688             }
2689         }
2690         av_free(ost_table);
2691     }
2692     return ret;
2693 }
2694
2695 static void opt_format(const char *arg)
2696 {
2697     last_asked_format = arg;
2698 }
2699
2700 static void opt_video_rc_override_string(const char *arg)
2701 {
2702     video_rc_override_string = arg;
2703 }
2704
2705 static int opt_me_threshold(const char *opt, const char *arg)
2706 {
2707     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2708     return 0;
2709 }
2710
2711 static int opt_verbose(const char *opt, const char *arg)
2712 {
2713     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2714     return 0;
2715 }
2716
2717 static int opt_frame_rate(const char *opt, const char *arg)
2718 {
2719     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2720         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2721         ffmpeg_exit(1);
2722     }
2723     return 0;
2724 }
2725
2726 static int opt_bitrate(const char *opt, const char *arg)
2727 {
2728     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2729
2730     opt_default(opt, arg);
2731
2732     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2733         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2734
2735     return 0;
2736 }
2737
2738 static int opt_frame_crop(const char *opt, const char *arg)
2739 {
2740     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2741     return AVERROR(EINVAL);
2742 }
2743
2744 static void opt_frame_size(const char *arg)
2745 {
2746     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2747         fprintf(stderr, "Incorrect frame size\n");
2748         ffmpeg_exit(1);
2749     }
2750 }
2751
2752 static int opt_pad(const char *opt, const char *arg) {
2753     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2754     return -1;
2755 }
2756
2757 static void opt_frame_pix_fmt(const char *arg)
2758 {
2759     if (strcmp(arg, "list")) {
2760         frame_pix_fmt = av_get_pix_fmt(arg);
2761         if (frame_pix_fmt == PIX_FMT_NONE) {
2762             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2763             ffmpeg_exit(1);
2764         }
2765     } else {
2766         show_pix_fmts();
2767         ffmpeg_exit(0);
2768     }
2769 }
2770
2771 static void opt_frame_aspect_ratio(const char *arg)
2772 {
2773     int x = 0, y = 0;
2774     double ar = 0;
2775     const char *p;
2776     char *end;
2777
2778     p = strchr(arg, ':');
2779     if (p) {
2780         x = strtol(arg, &end, 10);
2781         if (end == p)
2782             y = strtol(end+1, &end, 10);
2783         if (x > 0 && y > 0)
2784             ar = (double)x / (double)y;
2785     } else
2786         ar = strtod(arg, NULL);
2787
2788     if (!ar) {
2789         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2790         ffmpeg_exit(1);
2791     }
2792     frame_aspect_ratio = ar;
2793 }
2794
2795 static int opt_metadata(const char *opt, const char *arg)
2796 {
2797     char *mid= strchr(arg, '=');
2798
2799     if(!mid){
2800         fprintf(stderr, "Missing =\n");
2801         ffmpeg_exit(1);
2802     }
2803     *mid++= 0;
2804
2805     av_metadata_set2(&metadata, arg, mid, 0);
2806
2807     return 0;
2808 }
2809
2810 static int opt_qscale(const char *opt, const char *arg)
2811 {
2812     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2813     if (video_qscale == 0) {
2814         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2815         return AVERROR(EINVAL);
2816     }
2817     return 0;
2818 }
2819
2820 static int opt_top_field_first(const char *opt, const char *arg)
2821 {
2822     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2823     return 0;
2824 }
2825
2826 static int opt_thread_count(const char *opt, const char *arg)
2827 {
2828     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2829 #if !HAVE_THREADS
2830     if (verbose >= 0)
2831         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2832 #endif
2833     return 0;
2834 }
2835
2836 static void opt_audio_sample_fmt(const char *arg)
2837 {
2838     if (strcmp(arg, "list")) {
2839         audio_sample_fmt = av_get_sample_fmt(arg);
2840         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2841             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2842             ffmpeg_exit(1);
2843         }
2844     } else {
2845         int i;
2846         char fmt_str[128];
2847         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2848             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2849         ffmpeg_exit(0);
2850     }
2851 }
2852
2853 static int opt_audio_rate(const char *opt, const char *arg)
2854 {
2855     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2856     return 0;
2857 }
2858
2859 static int opt_audio_channels(const char *opt, const char *arg)
2860 {
2861     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2862     return 0;
2863 }
2864
2865 static int opt_video_channel(const char *opt, const char *arg)
2866 {
2867     video_channel = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2868     return 0;
2869 }
2870
2871 static void opt_video_standard(const char *arg)
2872 {
2873     video_standard = av_strdup(arg);
2874 }
2875
2876 static void opt_codec(int *pstream_copy, char **pcodec_name,
2877                       int codec_type, const char *arg)
2878 {
2879     av_freep(pcodec_name);
2880     if (!strcmp(arg, "copy")) {
2881         *pstream_copy = 1;
2882     } else {
2883         *pcodec_name = av_strdup(arg);
2884     }
2885 }
2886
2887 static void opt_audio_codec(const char *arg)
2888 {
2889     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2890 }
2891
2892 static void opt_video_codec(const char *arg)
2893 {
2894     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2895 }
2896
2897 static void opt_subtitle_codec(const char *arg)
2898 {
2899     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2900 }
2901
2902 static void opt_data_codec(const char *arg)
2903 {
2904     opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
2905 }
2906
2907 static int opt_codec_tag(const char *opt, const char *arg)
2908 {
2909     char *tail;
2910     uint32_t *codec_tag;
2911
2912     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2913                 !strcmp(opt, "vtag") ? &video_codec_tag :
2914                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2915     if (!codec_tag)
2916         return -1;
2917
2918     *codec_tag = strtol(arg, &tail, 0);
2919     if (!tail || *tail)
2920         *codec_tag = AV_RL32(arg);
2921
2922     return 0;
2923 }
2924
2925 static void opt_map(const char *arg)
2926 {
2927     AVStreamMap *m;
2928     char *p;
2929
2930     stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2931     m = &stream_maps[nb_stream_maps-1];
2932
2933     m->file_index = strtol(arg, &p, 0);
2934     if (*p)
2935         p++;
2936
2937     m->stream_index = strtol(p, &p, 0);
2938     if (*p) {
2939         p++;
2940         m->sync_file_index = strtol(p, &p, 0);
2941         if (*p)
2942             p++;
2943         m->sync_stream_index = strtol(p, &p, 0);
2944     } else {
2945         m->sync_file_index = m->file_index;
2946         m->sync_stream_index = m->stream_index;
2947     }
2948 }
2949
2950 static void parse_meta_type(char *arg, char *type, int *index, char **endptr)
2951 {
2952     *endptr = arg;
2953     if (*arg == ',') {
2954         *type = *(++arg);
2955         switch (*arg) {
2956         case 'g':
2957             break;
2958         case 's':
2959         case 'c':
2960         case 'p':
2961             *index = strtol(++arg, endptr, 0);
2962             break;
2963         default:
2964             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2965             ffmpeg_exit(1);
2966         }
2967     } else
2968         *type = 'g';
2969 }
2970
2971 static void opt_map_metadata(const char *arg)
2972 {
2973     AVMetaDataMap *m, *m1;
2974     char *p;
2975
2976     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2977                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2978
2979     m = &meta_data_maps[nb_meta_data_maps - 1][0];
2980     m->file = strtol(arg, &p, 0);
2981     parse_meta_type(p, &m->type, &m->index, &p);
2982     if (*p)
2983         p++;
2984
2985     m1 = &meta_data_maps[nb_meta_data_maps - 1][1];
2986     m1->file = strtol(p, &p, 0);
2987     parse_meta_type(p, &m1->type, &m1->index, &p);
2988
2989     if (m->type == 'g' || m1->type == 'g')
2990         metadata_global_autocopy = 0;
2991     if (m->type == 's' || m1->type == 's')
2992         metadata_streams_autocopy = 0;
2993     if (m->type == 'c' || m1->type == 'c')
2994         metadata_chapters_autocopy = 0;
2995 }
2996
2997 static void opt_map_meta_data(const char *arg)
2998 {
2999     fprintf(stderr, "-map_meta_data is deprecated and will be removed soon. "
3000                     "Use -map_metadata instead.\n");
3001     opt_map_metadata(arg);
3002 }
3003
3004 static void opt_map_chapters(const char *arg)
3005 {
3006     AVChapterMap *c;
3007     char *p;
3008
3009     chapter_maps = grow_array(chapter_maps, sizeof(*chapter_maps), &nb_chapter_maps,
3010                               nb_chapter_maps + 1);
3011     c = &chapter_maps[nb_chapter_maps - 1];
3012     c->out_file = strtol(arg, &p, 0);
3013     if (*p)
3014         p++;
3015
3016     c->in_file = strtol(p, &p, 0);
3017 }
3018
3019 static void opt_input_ts_scale(const char *arg)
3020 {
3021     unsigned int stream;
3022     double scale;
3023     char *p;
3024
3025     stream = strtol(arg, &p, 0);
3026     if (*p)
3027         p++;
3028     scale= strtod(p, &p);
3029
3030     if(stream >= MAX_STREAMS)
3031         ffmpeg_exit(1);
3032
3033     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);
3034     input_files_ts_scale[nb_input_files][stream]= scale;
3035 }
3036
3037 static int opt_recording_time(const char *opt, const char *arg)
3038 {
3039     recording_time = parse_time_or_die(opt, arg, 1);
3040     return 0;
3041 }
3042
3043 static int opt_start_time(const char *opt, const char *arg)
3044 {
3045     start_time = parse_time_or_die(opt, arg, 1);
3046     return 0;
3047 }
3048
3049 static int opt_recording_timestamp(const char *opt, const char *arg)
3050 {
3051     recording_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3052     return 0;
3053 }
3054
3055 static int opt_input_ts_offset(const char *opt, const char *arg)
3056 {
3057     input_ts_offset = parse_time_or_die(opt, arg, 1);
3058     return 0;
3059 }
3060
3061 static enum CodecID find_codec_or_die(const char *name, int type, int encoder, int strict)
3062 {
3063     const char *codec_string = encoder ? "encoder" : "decoder";
3064     AVCodec *codec;
3065
3066     if(!name)
3067         return CODEC_ID_NONE;
3068     codec = encoder ?
3069         avcodec_find_encoder_by_name(name) :
3070         avcodec_find_decoder_by_name(name);
3071     if(!codec) {
3072         fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3073         ffmpeg_exit(1);
3074     }
3075     if(codec->type != type) {
3076         fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3077         ffmpeg_exit(1);
3078     }
3079     if(codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
3080        strict > FF_COMPLIANCE_EXPERIMENTAL) {
3081         fprintf(stderr, "%s '%s' is experimental and might produce bad "
3082                 "results.\nAdd '-strict experimental' if you want to use it.\n",
3083                 codec_string, codec->name);
3084         codec = encoder ?
3085             avcodec_find_encoder(codec->id) :
3086             avcodec_find_decoder(codec->id);
3087         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
3088             fprintf(stderr, "Or use the non experimental %s '%s'.\n",
3089                     codec_string, codec->name);
3090         ffmpeg_exit(1);
3091     }
3092     return codec->id;
3093 }
3094
3095 static void opt_input_file(const char *filename)
3096 {
3097     AVFormatContext *ic;
3098     AVFormatParameters params, *ap = &params;
3099     AVInputFormat *file_iformat = NULL;
3100     int err, i, ret, rfps, rfps_base;
3101     int64_t timestamp;
3102
3103     if (last_asked_format) {
3104         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3105             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3106             ffmpeg_exit(1);
3107         }
3108         last_asked_format = NULL;
3109     }
3110
3111     if (!strcmp(filename, "-"))
3112         filename = "pipe:";
3113
3114     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3115                     !strcmp(filename, "/dev/stdin");
3116
3117     /* get default parameters from command line */
3118     ic = avformat_alloc_context();
3119     if (!ic) {
3120         print_error(filename, AVERROR(ENOMEM));
3121         ffmpeg_exit(1);
3122     }
3123
3124     memset(ap, 0, sizeof(*ap));
3125     ap->prealloced_context = 1;
3126     ap->sample_rate = audio_sample_rate;
3127     ap->channels = audio_channels;
3128     ap->time_base.den = frame_rate.num;
3129     ap->time_base.num = frame_rate.den;
3130     ap->width = frame_width;
3131     ap->height = frame_height;
3132     ap->pix_fmt = frame_pix_fmt;
3133    // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3134     ap->channel = video_channel;
3135     ap->standard = video_standard;
3136
3137     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
3138
3139     ic->video_codec_id   =
3140         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0,
3141                           avcodec_opts[AVMEDIA_TYPE_VIDEO   ]->strict_std_compliance);
3142     ic->audio_codec_id   =
3143         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0,
3144                           avcodec_opts[AVMEDIA_TYPE_AUDIO   ]->strict_std_compliance);
3145     ic->subtitle_codec_id=
3146         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0,
3147                           avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3148     ic->flags |= AVFMT_FLAG_NONBLOCK;
3149
3150     /* open the input file with generic libav function */
3151     err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3152     if (err < 0) {
3153         print_error(filename, err);
3154         ffmpeg_exit(1);
3155     }
3156     if(opt_programid) {
3157         int i, j;
3158         int found=0;
3159         for(i=0; i<ic->nb_streams; i++){
3160             ic->streams[i]->discard= AVDISCARD_ALL;
3161         }
3162         for(i=0; i<ic->nb_programs; i++){
3163             AVProgram *p= ic->programs[i];
3164             if(p->id != opt_programid){
3165                 p->discard = AVDISCARD_ALL;
3166             }else{
3167                 found=1;
3168                 for(j=0; j<p->nb_stream_indexes; j++){
3169                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3170                 }
3171             }
3172         }
3173         if(!found){
3174             fprintf(stderr, "Specified program id not found\n");
3175             ffmpeg_exit(1);
3176         }
3177         opt_programid=0;
3178     }
3179
3180     ic->loop_input = loop_input;
3181
3182     /* If not enough info to get the stream parameters, we decode the
3183        first frames to get it. (used in mpeg case for example) */
3184     ret = av_find_stream_info(ic);
3185     if (ret < 0 && verbose >= 0) {
3186         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3187         av_close_input_file(ic);
3188         ffmpeg_exit(1);
3189     }
3190
3191     timestamp = start_time;
3192     /* add the stream start time */
3193     if (ic->start_time != AV_NOPTS_VALUE)
3194         timestamp += ic->start_time;
3195
3196     /* if seeking requested, we execute it */
3197     if (start_time != 0) {
3198         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3199         if (ret < 0) {
3200             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3201                     filename, (double)timestamp / AV_TIME_BASE);
3202         }
3203         /* reset seek info */
3204         start_time = 0;
3205     }
3206
3207     /* update the current parameters so that they match the one of the input stream */
3208     for(i=0;i<ic->nb_streams;i++) {
3209         AVStream *st = ic->streams[i];
3210         AVCodecContext *dec = st->codec;
3211         dec->thread_count = thread_count;
3212         input_codecs = grow_array(input_codecs, sizeof(*input_codecs), &nb_input_codecs, nb_input_codecs + 1);
3213         switch (dec->codec_type) {
3214         case AVMEDIA_TYPE_AUDIO:
3215             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(audio_codec_name);
3216             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]);
3217             channel_layout    = dec->channel_layout;
3218             audio_channels    = dec->channels;
3219             audio_sample_rate = dec->sample_rate;
3220             audio_sample_fmt  = dec->sample_fmt;
3221             if(audio_disable)
3222                 st->discard= AVDISCARD_ALL;
3223             /* Note that av_find_stream_info can add more streams, and we
3224              * currently have no chance of setting up lowres decoding
3225              * early enough for them. */
3226             if (dec->lowres)
3227                 audio_sample_rate >>= dec->lowres;
3228             break;
3229         case AVMEDIA_TYPE_VIDEO:
3230             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(video_codec_name);
3231             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]);
3232             frame_height = dec->height;
3233             frame_width  = dec->width;
3234             frame_pix_fmt = dec->pix_fmt;
3235             rfps      = ic->streams[i]->r_frame_rate.num;
3236             rfps_base = ic->streams[i]->r_frame_rate.den;
3237             if (dec->lowres) {
3238                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3239                 frame_height >>= dec->lowres;
3240                 frame_width  >>= dec->lowres;
3241                 dec->height = frame_height;
3242                 dec->width  = frame_width;
3243             }
3244             if(me_threshold)
3245                 dec->debug |= FF_DEBUG_MV;
3246
3247             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3248
3249                 if (verbose >= 0)
3250                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3251                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3252
3253                     (float)rfps / rfps_base, rfps, rfps_base);
3254             }
3255             /* update the current frame rate to match the stream frame rate */
3256             frame_rate.num = rfps;
3257             frame_rate.den = rfps_base;
3258
3259             if(video_disable)
3260                 st->discard= AVDISCARD_ALL;
3261             else if(video_discard)
3262                 st->discard= video_discard;
3263             break;
3264         case AVMEDIA_TYPE_DATA:
3265             break;
3266         case AVMEDIA_TYPE_SUBTITLE:
3267             input_codecs[nb_input_codecs-1] = avcodec_find_decoder_by_name(subtitle_codec_name);
3268             if(subtitle_disable)
3269                 st->discard = AVDISCARD_ALL;
3270             break;
3271         case AVMEDIA_TYPE_ATTACHMENT:
3272         case AVMEDIA_TYPE_UNKNOWN:
3273             break;
3274         default:
3275             abort();
3276         }
3277     }
3278
3279     input_files[nb_input_files] = ic;
3280     input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
3281     /* dump the file content */
3282     if (verbose >= 0)
3283         av_dump_format(ic, nb_input_files, filename, 0);
3284
3285     nb_input_files++;
3286
3287     video_channel = 0;
3288
3289     av_freep(&video_codec_name);
3290     av_freep(&audio_codec_name);
3291     av_freep(&subtitle_codec_name);
3292     uninit_opts();
3293     init_opts();
3294 }
3295
3296 static void check_inputs(int *has_video_ptr,
3297                          int *has_audio_ptr,
3298                          int *has_subtitle_ptr,
3299                          int *has_data_ptr)
3300 {
3301     int has_video, has_audio, has_subtitle, has_data, i, j;
3302     AVFormatContext *ic;
3303
3304     has_video = 0;
3305     has_audio = 0;
3306     has_subtitle = 0;
3307     has_data = 0;
3308
3309     for(j=0;j<nb_input_files;j++) {
3310         ic = input_files[j];
3311         for(i=0;i<ic->nb_streams;i++) {
3312             AVCodecContext *enc = ic->streams[i]->codec;
3313             switch(enc->codec_type) {
3314             case AVMEDIA_TYPE_AUDIO:
3315                 has_audio = 1;
3316                 break;
3317             case AVMEDIA_TYPE_VIDEO:
3318                 has_video = 1;
3319                 break;
3320             case AVMEDIA_TYPE_SUBTITLE:
3321                 has_subtitle = 1;
3322                 break;
3323             case AVMEDIA_TYPE_DATA:
3324             case AVMEDIA_TYPE_ATTACHMENT:
3325             case AVMEDIA_TYPE_UNKNOWN:
3326                 has_data = 1;
3327                 break;
3328             default:
3329                 abort();
3330             }
3331         }
3332     }
3333     *has_video_ptr = has_video;
3334     *has_audio_ptr = has_audio;
3335     *has_subtitle_ptr = has_subtitle;
3336     *has_data_ptr = has_data;
3337 }
3338
3339 static void new_video_stream(AVFormatContext *oc, int file_idx)
3340 {
3341     AVStream *st;
3342     AVOutputStream *ost;
3343     AVCodecContext *video_enc;
3344     enum CodecID codec_id = CODEC_ID_NONE;
3345     AVCodec *codec= NULL;
3346
3347     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3348     if (!st) {
3349         fprintf(stderr, "Could not alloc stream\n");
3350         ffmpeg_exit(1);
3351     }
3352     ost = new_output_stream(oc, file_idx);
3353
3354     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3355     if(!video_stream_copy){
3356         if (video_codec_name) {
3357             codec_id = find_codec_or_die(video_codec_name, AVMEDIA_TYPE_VIDEO, 1,
3358                                          avcodec_opts[AVMEDIA_TYPE_VIDEO]->strict_std_compliance);
3359             codec = avcodec_find_encoder_by_name(video_codec_name);
3360             output_codecs[nb_output_codecs-1] = codec;
3361         } else {
3362             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_VIDEO);
3363             codec = avcodec_find_encoder(codec_id);
3364         }
3365
3366         ost->frame_aspect_ratio = frame_aspect_ratio;
3367         frame_aspect_ratio = 0;
3368 #if CONFIG_AVFILTER
3369         ost->avfilter= vfilters;
3370         vfilters = NULL;
3371 #endif
3372     }
3373
3374     avcodec_get_context_defaults3(st->codec, codec);
3375     ost->bitstream_filters = video_bitstream_filters;
3376     video_bitstream_filters= NULL;
3377
3378     st->codec->thread_count= thread_count;
3379
3380     video_enc = st->codec;
3381
3382     if(video_codec_tag)
3383         video_enc->codec_tag= video_codec_tag;
3384
3385     if(   (video_global_header&1)
3386        || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
3387         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3388         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3389     }
3390     if(video_global_header&2){
3391         video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
3392         avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
3393     }
3394
3395     if (video_stream_copy) {
3396         st->stream_copy = 1;
3397         video_enc->codec_type = AVMEDIA_TYPE_VIDEO;
3398         video_enc->sample_aspect_ratio =
3399         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3400     } else {
3401         const char *p;
3402         int i;
3403         AVRational fps= frame_rate.num ? frame_rate : (AVRational){25,1};
3404
3405         video_enc->codec_id = codec_id;
3406         set_context_opts(video_enc, avcodec_opts[AVMEDIA_TYPE_VIDEO], AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3407
3408         if (codec && codec->supported_framerates && !force_fps)
3409             fps = codec->supported_framerates[av_find_nearest_q_idx(fps, codec->supported_framerates)];
3410         video_enc->time_base.den = fps.num;
3411         video_enc->time_base.num = fps.den;
3412
3413         video_enc->width = frame_width;
3414         video_enc->height = frame_height;
3415         video_enc->pix_fmt = frame_pix_fmt;
3416         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3417
3418         choose_pixel_fmt(st, codec);
3419
3420         if (intra_only)
3421             video_enc->gop_size = 0;
3422         if (video_qscale || same_quality) {
3423             video_enc->flags |= CODEC_FLAG_QSCALE;
3424             video_enc->global_quality=
3425                 st->quality = FF_QP2LAMBDA * video_qscale;
3426         }
3427
3428         if(intra_matrix)
3429             video_enc->intra_matrix = intra_matrix;
3430         if(inter_matrix)
3431             video_enc->inter_matrix = inter_matrix;
3432
3433         p= video_rc_override_string;
3434         for(i=0; p; i++){
3435             int start, end, q;
3436             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3437             if(e!=3){
3438                 fprintf(stderr, "error parsing rc_override\n");
3439                 ffmpeg_exit(1);
3440             }
3441             video_enc->rc_override=
3442                 av_realloc(video_enc->rc_override,
3443                            sizeof(RcOverride)*(i+1));
3444             video_enc->rc_override[i].start_frame= start;
3445             video_enc->rc_override[i].end_frame  = end;
3446             if(q>0){
3447                 video_enc->rc_override[i].qscale= q;
3448                 video_enc->rc_override[i].quality_factor= 1.0;
3449             }
3450             else{
3451                 video_enc->rc_override[i].qscale= 0;
3452                 video_enc->rc_override[i].quality_factor= -q/100.0;
3453             }
3454             p= strchr(p, '/');
3455             if(p) p++;
3456         }
3457         video_enc->rc_override_count=i;
3458         if (!video_enc->rc_initial_buffer_occupancy)
3459             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3460         video_enc->me_threshold= me_threshold;
3461         video_enc->intra_dc_precision= intra_dc_precision - 8;
3462
3463         if (do_psnr)
3464             video_enc->flags|= CODEC_FLAG_PSNR;
3465
3466         /* two pass mode */
3467         if (do_pass) {
3468             if (do_pass == 1) {
3469                 video_enc->flags |= CODEC_FLAG_PASS1;
3470             } else {
3471                 video_enc->flags |= CODEC_FLAG_PASS2;
3472             }
3473         }
3474
3475         if (forced_key_frames)
3476             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3477     }
3478     if (video_language) {
3479         av_metadata_set2(&st->metadata, "language", video_language, 0);
3480         av_freep(&video_language);
3481     }
3482
3483     /* reset some key parameters */
3484     video_disable = 0;
3485     av_freep(&video_codec_name);
3486     av_freep(&forced_key_frames);
3487     video_stream_copy = 0;
3488     frame_pix_fmt = PIX_FMT_NONE;
3489 }
3490
3491 static void new_audio_stream(AVFormatContext *oc, int file_idx)
3492 {
3493     AVStream *st;
3494     AVOutputStream *ost;
3495     AVCodec *codec= NULL;
3496     AVCodecContext *audio_enc;
3497     enum CodecID codec_id = CODEC_ID_NONE;
3498
3499     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3500     if (!st) {
3501         fprintf(stderr, "Could not alloc stream\n");
3502         ffmpeg_exit(1);
3503     }
3504     ost = new_output_stream(oc, file_idx);
3505
3506     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3507     if(!audio_stream_copy){
3508         if (audio_codec_name) {
3509             codec_id = find_codec_or_die(audio_codec_name, AVMEDIA_TYPE_AUDIO, 1,
3510                                          avcodec_opts[AVMEDIA_TYPE_AUDIO]->strict_std_compliance);
3511             codec = avcodec_find_encoder_by_name(audio_codec_name);
3512             output_codecs[nb_output_codecs-1] = codec;
3513         } else {
3514             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_AUDIO);
3515             codec = avcodec_find_encoder(codec_id);
3516         }
3517     }
3518
3519     avcodec_get_context_defaults3(st->codec, codec);
3520
3521     ost->bitstream_filters = audio_bitstream_filters;
3522     audio_bitstream_filters= NULL;
3523
3524     st->codec->thread_count= thread_count;
3525
3526     audio_enc = st->codec;
3527     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3528
3529     if(audio_codec_tag)
3530         audio_enc->codec_tag= audio_codec_tag;
3531
3532     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3533         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3534         avcodec_opts[AVMEDIA_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
3535     }
3536     if (audio_stream_copy) {
3537         st->stream_copy = 1;
3538         audio_enc->channels = audio_channels;
3539         audio_enc->sample_rate = audio_sample_rate;
3540     } else {
3541         audio_enc->codec_id = codec_id;
3542         set_context_opts(audio_enc, avcodec_opts[AVMEDIA_TYPE_AUDIO], AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3543
3544         if (audio_qscale > QSCALE_NONE) {
3545             audio_enc->flags |= CODEC_FLAG_QSCALE;
3546             audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3547         }
3548         audio_enc->channels = audio_channels;
3549         audio_enc->sample_fmt = audio_sample_fmt;
3550         audio_enc->sample_rate = audio_sample_rate;
3551         audio_enc->channel_layout = channel_layout;
3552         if (av_get_channel_layout_nb_channels(channel_layout) != audio_channels)
3553             audio_enc->channel_layout = 0;
3554         choose_sample_fmt(st, codec);
3555         choose_sample_rate(st, codec);
3556     }
3557     audio_enc->time_base= (AVRational){1, audio_sample_rate};
3558     if (audio_language) {
3559         av_metadata_set2(&st->metadata, "language", audio_language, 0);
3560         av_freep(&audio_language);
3561     }
3562
3563     /* reset some key parameters */
3564     audio_disable = 0;
3565     av_freep(&audio_codec_name);
3566     audio_stream_copy = 0;
3567 }
3568
3569 static void new_data_stream(AVFormatContext *oc, int file_idx)
3570 {
3571     AVStream *st;
3572     AVOutputStream *ost;
3573     AVCodec *codec=NULL;
3574     AVCodecContext *data_enc;
3575
3576     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3577     if (!st) {
3578         fprintf(stderr, "Could not alloc stream\n");
3579         ffmpeg_exit(1);
3580     }
3581     ost = new_output_stream(oc, file_idx);
3582     data_enc = st->codec;
3583     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3584     if (!data_stream_copy) {
3585         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3586         ffmpeg_exit(1);
3587     }
3588     avcodec_get_context_defaults3(st->codec, codec);
3589
3590     data_enc->codec_type = AVMEDIA_TYPE_DATA;
3591
3592     if (data_codec_tag)
3593         data_enc->codec_tag= data_codec_tag;
3594
3595     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3596         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3597         avcodec_opts[AVMEDIA_TYPE_DATA]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3598     }
3599     if (data_stream_copy) {
3600         st->stream_copy = 1;
3601     }
3602
3603     data_disable = 0;
3604     av_freep(&data_codec_name);
3605     data_stream_copy = 0;
3606 }
3607
3608 static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
3609 {
3610     AVStream *st;
3611     AVOutputStream *ost;
3612     AVCodec *codec=NULL;
3613     AVCodecContext *subtitle_enc;
3614     enum CodecID codec_id = CODEC_ID_NONE;
3615
3616     st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3617     if (!st) {
3618         fprintf(stderr, "Could not alloc stream\n");
3619         ffmpeg_exit(1);
3620     }
3621     ost = new_output_stream(oc, file_idx);
3622     subtitle_enc = st->codec;
3623     output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
3624     if(!subtitle_stream_copy){
3625         if (subtitle_codec_name) {
3626             codec_id = find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 1,
3627                                          avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->strict_std_compliance);
3628             codec= output_codecs[nb_output_codecs-1] = avcodec_find_encoder_by_name(subtitle_codec_name);
3629         } else {
3630             codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, AVMEDIA_TYPE_SUBTITLE);
3631             codec = avcodec_find_encoder(codec_id);
3632         }
3633     }
3634     avcodec_get_context_defaults3(st->codec, codec);
3635
3636     ost->bitstream_filters = subtitle_bitstream_filters;
3637     subtitle_bitstream_filters= NULL;
3638
3639     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3640
3641     if(subtitle_codec_tag)
3642         subtitle_enc->codec_tag= subtitle_codec_tag;
3643
3644     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3645         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3646         avcodec_opts[AVMEDIA_TYPE_SUBTITLE]->flags |= CODEC_FLAG_GLOBAL_HEADER;
3647     }
3648     if (subtitle_stream_copy) {
3649         st->stream_copy = 1;
3650     } else {
3651         subtitle_enc->codec_id = codec_id;
3652         set_context_opts(avcodec_opts[AVMEDIA_TYPE_SUBTITLE], subtitle_enc, AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM, codec);
3653     }
3654
3655     if (subtitle_language) {
3656         av_metadata_set2(&st->metadata, "language", subtitle_language, 0);
3657         av_freep(&subtitle_language);