avconv: Correct Copyright statement.
[ffmpeg.git] / avconv.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavformat/os_support.h"
48
49 #include "libavformat/ffm.h" // not public API
50
51 #if CONFIG_AVFILTER
52 # include "libavfilter/avcodec.h"
53 # include "libavfilter/avfilter.h"
54 # include "libavfilter/avfiltergraph.h"
55 # include "libavfilter/vsink_buffer.h"
56 # include "libavfilter/vsrc_buffer.h"
57 #endif
58
59 #if HAVE_SYS_RESOURCE_H
60 #include <sys/types.h>
61 #include <sys/time.h>
62 #include <sys/resource.h>
63 #elif HAVE_GETPROCESSTIMES
64 #include <windows.h>
65 #endif
66 #if HAVE_GETPROCESSMEMORYINFO
67 #include <windows.h>
68 #include <psapi.h>
69 #endif
70
71 #if HAVE_SYS_SELECT_H
72 #include <sys/select.h>
73 #endif
74
75 #if HAVE_TERMIOS_H
76 #include <fcntl.h>
77 #include <sys/ioctl.h>
78 #include <sys/time.h>
79 #include <termios.h>
80 #elif HAVE_KBHIT
81 #include <conio.h>
82 #endif
83 #include <time.h>
84
85 #include "cmdutils.h"
86
87 #include "libavutil/avassert.h"
88
89 const char program_name[] = "avconv";
90 const int program_birth_year = 2000;
91
92 /* select an input stream for an output stream */
93 typedef struct StreamMap {
94     int disabled;           /** 1 is this mapping is disabled by a negative map */
95     int file_index;
96     int stream_index;
97     int sync_file_index;
98     int sync_stream_index;
99 } StreamMap;
100
101 /**
102  * select an input file for an output file
103  */
104 typedef struct MetadataMap {
105     int  file;      ///< file index
106     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
107     int  index;     ///< stream/chapter/program number
108 } MetadataMap;
109
110 static const OptionDef options[];
111
112 #define MAX_FILES 100
113 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
114 static const char *last_asked_format = NULL;
115 static double *ts_scale;
116 static int  nb_ts_scale;
117
118 static AVFormatContext *output_files[MAX_FILES];
119 static AVDictionary *output_opts[MAX_FILES];
120 static int nb_output_files = 0;
121
122 static StreamMap *stream_maps = NULL;
123 static int nb_stream_maps;
124
125 static AVDictionary *codec_names;
126
127 /* first item specifies output metadata, second is input */
128 static MetadataMap (*meta_data_maps)[2] = NULL;
129 static int nb_meta_data_maps;
130 static int metadata_global_autocopy   = 1;
131 static int metadata_streams_autocopy  = 1;
132 static int metadata_chapters_autocopy = 1;
133
134 static int chapters_input_file = INT_MAX;
135
136 /* indexed by output file stream index */
137 static int *streamid_map = NULL;
138 static int nb_streamid_map = 0;
139
140 static int frame_width  = 0;
141 static int frame_height = 0;
142 static float frame_aspect_ratio = 0;
143 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
144 static int frame_bits_per_raw_sample = 0;
145 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
146 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
147 static AVRational frame_rate;
148 static float video_qscale = 0;
149 static uint16_t *intra_matrix = NULL;
150 static uint16_t *inter_matrix = NULL;
151 static const char *video_rc_override_string=NULL;
152 static int video_disable = 0;
153 static int video_discard = 0;
154 static unsigned int video_codec_tag = 0;
155 static char *video_language = NULL;
156 static int same_quant = 0;
157 static int do_deinterlace = 0;
158 static int top_field_first = -1;
159 static int me_threshold = 0;
160 static int intra_dc_precision = 8;
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 = 0;
168 #define QSCALE_NONE -99999
169 static float audio_qscale = QSCALE_NONE;
170 static int audio_disable = 0;
171 static int audio_channels = 0;
172 static unsigned int audio_codec_tag = 0;
173 static char *audio_language = NULL;
174
175 static int subtitle_disable = 0;
176 static char *subtitle_language = NULL;
177 static unsigned int subtitle_codec_tag = 0;
178
179 static int data_disable = 0;
180 static unsigned int data_codec_tag = 0;
181
182 static float mux_preload= 0.5;
183 static float mux_max_delay= 0.7;
184
185 static int64_t recording_time = INT64_MAX;
186 static int64_t start_time = 0;
187 static int64_t input_ts_offset = 0;
188 static int file_overwrite = 0;
189 static AVDictionary *metadata;
190 static int do_benchmark = 0;
191 static int do_hex_dump = 0;
192 static int do_pkt_dump = 0;
193 static int do_psnr = 0;
194 static int do_pass = 0;
195 static const char *pass_logfilename_prefix;
196 static int video_sync_method= -1;
197 static int audio_sync_method= 0;
198 static float audio_drift_threshold= 0.1;
199 static int copy_ts= 0;
200 static int copy_tb= 0;
201 static int opt_shortest = 0;
202 static char *vstats_filename;
203 static FILE *vstats_file;
204 static int opt_programid = 0;
205 static int copy_initial_nonkeyframes = 0;
206
207 static int rate_emu = 0;
208
209 static int audio_volume = 256;
210
211 static int exit_on_error = 0;
212 static int using_stdin = 0;
213 static int verbose = 1;
214 static int run_as_daemon  = 0;
215 static int thread_count= 1;
216 static int q_pressed = 0;
217 static int64_t video_size = 0;
218 static int64_t audio_size = 0;
219 static int64_t extra_size = 0;
220 static int nb_frames_dup = 0;
221 static int nb_frames_drop = 0;
222 static int input_sync;
223 static uint64_t limit_filesize = 0;
224 static int force_fps = 0;
225 static char *forced_key_frames = NULL;
226
227 static float dts_delta_threshold = 10;
228
229 static int64_t timer_start;
230
231 static uint8_t *audio_buf;
232 static uint8_t *audio_out;
233 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
234
235 static short *samples;
236
237 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
238 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
239 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
240
241 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
242
243 struct InputStream;
244
245 typedef struct OutputStream {
246     int file_index;          /* file index */
247     int index;               /* stream index in the output file */
248     int source_index;        /* InputStream index */
249     AVStream *st;            /* stream in the output file */
250     int encoding_needed;     /* true if encoding needed for this stream */
251     int frame_number;
252     /* input pts and corresponding output pts
253        for A/V sync */
254     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
255     struct InputStream *sync_ist; /* input stream to sync against */
256     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
257     AVBitStreamFilterContext *bitstream_filters;
258     AVCodec *enc;
259
260     /* video only */
261     int video_resample;
262     AVFrame resample_frame;              /* temporary frame for image resampling */
263     struct SwsContext *img_resample_ctx; /* for image resampling */
264     int resample_height;
265     int resample_width;
266     int resample_pix_fmt;
267     AVRational frame_rate;
268
269     float frame_aspect_ratio;
270
271     /* forced key frames */
272     int64_t *forced_kf_pts;
273     int forced_kf_count;
274     int forced_kf_index;
275
276     /* audio only */
277     int audio_resample;
278     ReSampleContext *resample; /* for audio resampling */
279     int resample_sample_fmt;
280     int resample_channels;
281     int resample_sample_rate;
282     int reformat_pair;
283     AVAudioConvert *reformat_ctx;
284     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
285     FILE *logfile;
286
287 #if CONFIG_AVFILTER
288     AVFilterContext *output_video_filter;
289     AVFilterContext *input_video_filter;
290     AVFilterBufferRef *picref;
291     char *avfilter;
292     AVFilterGraph *graph;
293 #endif
294
295    int sws_flags;
296    AVDictionary *opts;
297 } OutputStream;
298
299 static OutputStream **output_streams_for_file[MAX_FILES] = { NULL };
300 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
301
302 typedef struct InputStream {
303     int file_index;
304     AVStream *st;
305     int discard;             /* true if stream data should be discarded */
306     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
307     AVCodec *dec;
308
309     int64_t       start;     /* time when read started */
310     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
311                                 is not defined */
312     int64_t       pts;       /* current pts */
313     double ts_scale;
314     int is_start;            /* is 1 at the start and after a discontinuity */
315     int showed_multi_packet_warning;
316     int is_past_recording_time;
317     AVDictionary *opts;
318 } InputStream;
319
320 typedef struct InputFile {
321     AVFormatContext *ctx;
322     int eof_reached;      /* true if eof reached */
323     int ist_index;        /* index of first stream in ist_table */
324     int buffer_size;      /* current total buffer size */
325     int nb_streams;
326     int64_t ts_offset;
327 } InputFile;
328
329 #if HAVE_TERMIOS_H
330
331 /* init terminal so that we can grab keys */
332 static struct termios oldtty;
333 #endif
334
335 static InputStream *input_streams = NULL;
336 static int         nb_input_streams = 0;
337 static InputFile   *input_files   = NULL;
338 static int         nb_input_files   = 0;
339
340 #if CONFIG_AVFILTER
341
342 static int configure_video_filters(InputStream *ist, OutputStream *ost)
343 {
344     AVFilterContext *last_filter, *filter;
345     /** filter graph containing all filters including input & output */
346     AVCodecContext *codec = ost->st->codec;
347     AVCodecContext *icodec = ist->st->codec;
348     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
349     AVRational sample_aspect_ratio;
350     char args[255];
351     int ret;
352
353     ost->graph = avfilter_graph_alloc();
354
355     if (ist->st->sample_aspect_ratio.num){
356         sample_aspect_ratio = ist->st->sample_aspect_ratio;
357     }else
358         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
359
360     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
361              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
362              sample_aspect_ratio.num, sample_aspect_ratio.den);
363
364     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
365                                        "src", args, NULL, ost->graph);
366     if (ret < 0)
367         return ret;
368     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
369                                        "out", NULL, pix_fmts, ost->graph);
370     if (ret < 0)
371         return ret;
372     last_filter = ost->input_video_filter;
373
374     if (codec->width  != icodec->width || codec->height != icodec->height) {
375         snprintf(args, 255, "%d:%d:flags=0x%X",
376                  codec->width,
377                  codec->height,
378                  ost->sws_flags);
379         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
380                                                 NULL, args, NULL, ost->graph)) < 0)
381             return ret;
382         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
383             return ret;
384         last_filter = filter;
385     }
386
387     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
388     ost->graph->scale_sws_opts = av_strdup(args);
389
390     if (ost->avfilter) {
391         AVFilterInOut *outputs = avfilter_inout_alloc();
392         AVFilterInOut *inputs  = avfilter_inout_alloc();
393
394         outputs->name    = av_strdup("in");
395         outputs->filter_ctx = last_filter;
396         outputs->pad_idx = 0;
397         outputs->next    = NULL;
398
399         inputs->name    = av_strdup("out");
400         inputs->filter_ctx = ost->output_video_filter;
401         inputs->pad_idx = 0;
402         inputs->next    = NULL;
403
404         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
405             return ret;
406         av_freep(&ost->avfilter);
407     } else {
408         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
409             return ret;
410     }
411
412     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
413         return ret;
414
415     codec->width  = ost->output_video_filter->inputs[0]->w;
416     codec->height = ost->output_video_filter->inputs[0]->h;
417     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
418         ost->frame_aspect_ratio ? // overriden by the -aspect cli option
419         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
420         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
421
422     return 0;
423 }
424 #endif /* CONFIG_AVFILTER */
425
426 static void term_exit(void)
427 {
428     av_log(NULL, AV_LOG_QUIET, "%s", "");
429 #if HAVE_TERMIOS_H
430     if(!run_as_daemon)
431         tcsetattr (0, TCSANOW, &oldtty);
432 #endif
433 }
434
435 static volatile int received_sigterm = 0;
436
437 static void
438 sigterm_handler(int sig)
439 {
440     received_sigterm = sig;
441     q_pressed++;
442     term_exit();
443 }
444
445 static void term_init(void)
446 {
447 #if HAVE_TERMIOS_H
448     if(!run_as_daemon){
449     struct termios tty;
450
451     tcgetattr (0, &tty);
452     oldtty = tty;
453     atexit(term_exit);
454
455     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
456                           |INLCR|IGNCR|ICRNL|IXON);
457     tty.c_oflag |= OPOST;
458     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
459     tty.c_cflag &= ~(CSIZE|PARENB);
460     tty.c_cflag |= CS8;
461     tty.c_cc[VMIN] = 1;
462     tty.c_cc[VTIME] = 0;
463
464     tcsetattr (0, TCSANOW, &tty);
465     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
466     }
467 #endif
468
469     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
470     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
471 #ifdef SIGXCPU
472     signal(SIGXCPU, sigterm_handler);
473 #endif
474 }
475
476 /* read a key without blocking */
477 static int read_key(void)
478 {
479 #if HAVE_TERMIOS_H
480     int n = 1;
481     unsigned char ch;
482     struct timeval tv;
483     fd_set rfds;
484
485     if(run_as_daemon)
486         return -1;
487
488     FD_ZERO(&rfds);
489     FD_SET(0, &rfds);
490     tv.tv_sec = 0;
491     tv.tv_usec = 0;
492     n = select(1, &rfds, NULL, NULL, &tv);
493     if (n > 0) {
494         n = read(0, &ch, 1);
495         if (n == 1)
496             return ch;
497
498         return n;
499     }
500 #elif HAVE_KBHIT
501     if(kbhit())
502         return(getch());
503 #endif
504     return -1;
505 }
506
507 static int decode_interrupt_cb(void)
508 {
509     q_pressed += read_key() == 'q';
510     return q_pressed > 1;
511 }
512
513 static int exit_program(int ret)
514 {
515     int i;
516
517     /* close files */
518     for(i=0;i<nb_output_files;i++) {
519         AVFormatContext *s = output_files[i];
520         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
521             avio_close(s->pb);
522         avformat_free_context(s);
523         av_free(output_streams_for_file[i]);
524         av_dict_free(&output_opts[i]);
525     }
526     for(i=0;i<nb_input_files;i++) {
527         av_close_input_file(input_files[i].ctx);
528     }
529     for (i = 0; i < nb_input_streams; i++)
530         av_dict_free(&input_streams[i].opts);
531
532     av_free(intra_matrix);
533     av_free(inter_matrix);
534
535     if (vstats_file)
536         fclose(vstats_file);
537     av_free(vstats_filename);
538
539     av_free(streamid_map);
540     av_free(meta_data_maps);
541
542     av_freep(&input_streams);
543     av_freep(&input_files);
544
545     uninit_opts();
546     av_free(audio_buf);
547     av_free(audio_out);
548     allocated_audio_buf_size= allocated_audio_out_size= 0;
549     av_free(samples);
550
551 #if CONFIG_AVFILTER
552     avfilter_uninit();
553 #endif
554
555     if (received_sigterm) {
556         fprintf(stderr,
557             "Received signal %d: terminating.\n",
558             (int) received_sigterm);
559         exit (255);
560     }
561
562     exit(ret); /* not all OS-es handle main() return value */
563     return ret;
564 }
565
566 static void assert_avoptions(AVDictionary *m)
567 {
568     AVDictionaryEntry *t;
569     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
570         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
571         exit_program(1);
572     }
573 }
574
575 static void assert_codec_experimental(AVCodecContext *c, int encoder)
576 {
577     const char *codec_string = encoder ? "encoder" : "decoder";
578     AVCodec *codec;
579     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
580         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
581         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
582                 "results.\nAdd '-strict experimental' if you want to use it.\n",
583                 codec_string, c->codec->name);
584         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
585         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
586             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
587                    codec_string, codec->name);
588         exit_program(1);
589     }
590 }
591
592 /* similar to ff_dynarray_add() and av_fast_realloc() */
593 static void *grow_array(void *array, int elem_size, int *size, int new_size)
594 {
595     if (new_size >= INT_MAX / elem_size) {
596         fprintf(stderr, "Array too big.\n");
597         exit_program(1);
598     }
599     if (*size < new_size) {
600         uint8_t *tmp = av_realloc(array, new_size*elem_size);
601         if (!tmp) {
602             fprintf(stderr, "Could not alloc buffer.\n");
603             exit_program(1);
604         }
605         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
606         *size = new_size;
607         return tmp;
608     }
609     return array;
610 }
611
612 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
613 {
614     if(codec && codec->sample_fmts){
615         const enum AVSampleFormat *p= codec->sample_fmts;
616         for(; *p!=-1; p++){
617             if(*p == st->codec->sample_fmt)
618                 break;
619         }
620         if (*p == -1) {
621             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
622                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
623             if(av_get_sample_fmt_name(st->codec->sample_fmt))
624             av_log(NULL, AV_LOG_WARNING,
625                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
626                    av_get_sample_fmt_name(st->codec->sample_fmt),
627                    codec->name,
628                    av_get_sample_fmt_name(codec->sample_fmts[0]));
629             st->codec->sample_fmt = codec->sample_fmts[0];
630         }
631     }
632 }
633
634 static void choose_sample_rate(AVStream *st, AVCodec *codec)
635 {
636     if(codec && codec->supported_samplerates){
637         const int *p= codec->supported_samplerates;
638         int best=0;
639         int best_dist=INT_MAX;
640         for(; *p; p++){
641             int dist= abs(st->codec->sample_rate - *p);
642             if(dist < best_dist){
643                 best_dist= dist;
644                 best= *p;
645             }
646         }
647         if(best_dist){
648             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
649         }
650         st->codec->sample_rate= best;
651     }
652 }
653
654 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
655 {
656     if(codec && codec->pix_fmts){
657         const enum PixelFormat *p= codec->pix_fmts;
658         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
659             if(st->codec->codec_id==CODEC_ID_MJPEG){
660                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
661             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
662                 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};
663             }
664         }
665         for(; *p!=-1; p++){
666             if(*p == st->codec->pix_fmt)
667                 break;
668         }
669         if (*p == -1) {
670             if(st->codec->pix_fmt != PIX_FMT_NONE)
671                 av_log(NULL, AV_LOG_WARNING,
672                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
673                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
674                         codec->name,
675                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
676             st->codec->pix_fmt = codec->pix_fmts[0];
677         }
678     }
679 }
680
681 static double
682 get_sync_ipts(const OutputStream *ost)
683 {
684     const InputStream *ist = ost->sync_ist;
685     return (double)(ist->pts - start_time)/AV_TIME_BASE;
686 }
687
688 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
689     int ret;
690
691     while(bsfc){
692         AVPacket new_pkt= *pkt;
693         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
694                                           &new_pkt.data, &new_pkt.size,
695                                           pkt->data, pkt->size,
696                                           pkt->flags & AV_PKT_FLAG_KEY);
697         if(a>0){
698             av_free_packet(pkt);
699             new_pkt.destruct= av_destruct_packet;
700         } else if(a<0){
701             fprintf(stderr, "%s failed for stream %d, codec %s",
702                     bsfc->filter->name, pkt->stream_index,
703                     avctx->codec ? avctx->codec->name : "copy");
704             print_error("", a);
705             if (exit_on_error)
706                 exit_program(1);
707         }
708         *pkt= new_pkt;
709
710         bsfc= bsfc->next;
711     }
712
713     ret= av_interleaved_write_frame(s, pkt);
714     if(ret < 0){
715         print_error("av_interleaved_write_frame()", ret);
716         exit_program(1);
717     }
718 }
719
720 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
721
722 static void do_audio_out(AVFormatContext *s,
723                          OutputStream *ost,
724                          InputStream *ist,
725                          unsigned char *buf, int size)
726 {
727     uint8_t *buftmp;
728     int64_t audio_out_size, audio_buf_size;
729     int64_t allocated_for_size= size;
730
731     int size_out, frame_bytes, ret, resample_changed;
732     AVCodecContext *enc= ost->st->codec;
733     AVCodecContext *dec= ist->st->codec;
734     int osize = av_get_bytes_per_sample(enc->sample_fmt);
735     int isize = av_get_bytes_per_sample(dec->sample_fmt);
736     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
737
738 need_realloc:
739     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
740     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
741     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
742     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
743     audio_buf_size*= osize*enc->channels;
744
745     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
746     if(coded_bps > 8*osize)
747         audio_out_size= audio_out_size * coded_bps / (8*osize);
748     audio_out_size += FF_MIN_BUFFER_SIZE;
749
750     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
751         fprintf(stderr, "Buffer sizes too large\n");
752         exit_program(1);
753     }
754
755     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
756     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
757     if (!audio_buf || !audio_out){
758         fprintf(stderr, "Out of memory in do_audio_out\n");
759         exit_program(1);
760     }
761
762     if (enc->channels != dec->channels)
763         ost->audio_resample = 1;
764
765     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
766                        ost->resample_channels    != dec->channels   ||
767                        ost->resample_sample_rate != dec->sample_rate;
768
769     if ((ost->audio_resample && !ost->resample) || resample_changed) {
770         if (resample_changed) {
771             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",
772                    ist->file_index, ist->st->index,
773                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
774                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
775             ost->resample_sample_fmt  = dec->sample_fmt;
776             ost->resample_channels    = dec->channels;
777             ost->resample_sample_rate = dec->sample_rate;
778             if (ost->resample)
779                 audio_resample_close(ost->resample);
780         }
781         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
782         if (audio_sync_method <= 1 &&
783             ost->resample_sample_fmt  == enc->sample_fmt &&
784             ost->resample_channels    == enc->channels   &&
785             ost->resample_sample_rate == enc->sample_rate) {
786             ost->resample = NULL;
787             ost->audio_resample = 0;
788         } else {
789             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
790                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
791             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
792                                                    enc->sample_rate, dec->sample_rate,
793                                                    enc->sample_fmt,  dec->sample_fmt,
794                                                    16, 10, 0, 0.8);
795             if (!ost->resample) {
796                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
797                         dec->channels, dec->sample_rate,
798                         enc->channels, enc->sample_rate);
799                 exit_program(1);
800             }
801         }
802     }
803
804 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
805     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
806         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
807         if (ost->reformat_ctx)
808             av_audio_convert_free(ost->reformat_ctx);
809         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
810                                                    dec->sample_fmt, 1, NULL, 0);
811         if (!ost->reformat_ctx) {
812             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
813                 av_get_sample_fmt_name(dec->sample_fmt),
814                 av_get_sample_fmt_name(enc->sample_fmt));
815             exit_program(1);
816         }
817         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
818     }
819
820     if(audio_sync_method){
821         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
822                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
823         double idelta= delta*dec->sample_rate / enc->sample_rate;
824         int byte_delta= ((int)idelta)*2*dec->channels;
825
826         //FIXME resample delay
827         if(fabs(delta) > 50){
828             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
829                 if(byte_delta < 0){
830                     byte_delta= FFMAX(byte_delta, -size);
831                     size += byte_delta;
832                     buf  -= byte_delta;
833                     if(verbose > 2)
834                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
835                     if(!size)
836                         return;
837                     ist->is_start=0;
838                 }else{
839                     static uint8_t *input_tmp= NULL;
840                     input_tmp= av_realloc(input_tmp, byte_delta + size);
841
842                     if(byte_delta > allocated_for_size - size){
843                         allocated_for_size= byte_delta + (int64_t)size;
844                         goto need_realloc;
845                     }
846                     ist->is_start=0;
847
848                     memset(input_tmp, 0, byte_delta);
849                     memcpy(input_tmp + byte_delta, buf, size);
850                     buf= input_tmp;
851                     size += byte_delta;
852                     if(verbose > 2)
853                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
854                 }
855             }else if(audio_sync_method>1){
856                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
857                 av_assert0(ost->audio_resample);
858                 if(verbose > 2)
859                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
860 //                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));
861                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
862             }
863         }
864     }else
865         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
866                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
867
868     if (ost->audio_resample) {
869         buftmp = audio_buf;
870         size_out = audio_resample(ost->resample,
871                                   (short *)buftmp, (short *)buf,
872                                   size / (dec->channels * isize));
873         size_out = size_out * enc->channels * osize;
874     } else {
875         buftmp = buf;
876         size_out = size;
877     }
878
879     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
880         const void *ibuf[6]= {buftmp};
881         void *obuf[6]= {audio_buf};
882         int istride[6]= {isize};
883         int ostride[6]= {osize};
884         int len= size_out/istride[0];
885         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
886             printf("av_audio_convert() failed\n");
887             if (exit_on_error)
888                 exit_program(1);
889             return;
890         }
891         buftmp = audio_buf;
892         size_out = len*osize;
893     }
894
895     /* now encode as many frames as possible */
896     if (enc->frame_size > 1) {
897         /* output resampled raw samples */
898         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
899             fprintf(stderr, "av_fifo_realloc2() failed\n");
900             exit_program(1);
901         }
902         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
903
904         frame_bytes = enc->frame_size * osize * enc->channels;
905
906         while (av_fifo_size(ost->fifo) >= frame_bytes) {
907             AVPacket pkt;
908             av_init_packet(&pkt);
909
910             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
911
912             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
913
914             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
915                                        (short *)audio_buf);
916             if (ret < 0) {
917                 fprintf(stderr, "Audio encoding failed\n");
918                 exit_program(1);
919             }
920             audio_size += ret;
921             pkt.stream_index= ost->index;
922             pkt.data= audio_out;
923             pkt.size= ret;
924             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
925                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
926             pkt.flags |= AV_PKT_FLAG_KEY;
927             write_frame(s, &pkt, enc, ost->bitstream_filters);
928
929             ost->sync_opts += enc->frame_size;
930         }
931     } else {
932         AVPacket pkt;
933         av_init_packet(&pkt);
934
935         ost->sync_opts += size_out / (osize * enc->channels);
936
937         /* output a pcm frame */
938         /* determine the size of the coded buffer */
939         size_out /= osize;
940         if (coded_bps)
941             size_out = size_out*coded_bps/8;
942
943         if(size_out > audio_out_size){
944             fprintf(stderr, "Internal error, buffer size too small\n");
945             exit_program(1);
946         }
947
948         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
949         ret = avcodec_encode_audio(enc, audio_out, size_out,
950                                    (short *)buftmp);
951         if (ret < 0) {
952             fprintf(stderr, "Audio encoding failed\n");
953             exit_program(1);
954         }
955         audio_size += ret;
956         pkt.stream_index= ost->index;
957         pkt.data= audio_out;
958         pkt.size= ret;
959         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
960             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
961         pkt.flags |= AV_PKT_FLAG_KEY;
962         write_frame(s, &pkt, enc, ost->bitstream_filters);
963     }
964 }
965
966 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
967 {
968     AVCodecContext *dec;
969     AVPicture *picture2;
970     AVPicture picture_tmp;
971     uint8_t *buf = 0;
972
973     dec = ist->st->codec;
974
975     /* deinterlace : must be done before any resize */
976     if (do_deinterlace) {
977         int size;
978
979         /* create temporary picture */
980         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
981         buf = av_malloc(size);
982         if (!buf)
983             return;
984
985         picture2 = &picture_tmp;
986         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
987
988         if(avpicture_deinterlace(picture2, picture,
989                                  dec->pix_fmt, dec->width, dec->height) < 0) {
990             /* if error, do not deinterlace */
991             fprintf(stderr, "Deinterlacing failed\n");
992             av_free(buf);
993             buf = NULL;
994             picture2 = picture;
995         }
996     } else {
997         picture2 = picture;
998     }
999
1000     if (picture != picture2)
1001         *picture = *picture2;
1002     *bufp = buf;
1003 }
1004
1005 /* we begin to correct av delay at this threshold */
1006 #define AV_DELAY_MAX 0.100
1007
1008 static void do_subtitle_out(AVFormatContext *s,
1009                             OutputStream *ost,
1010                             InputStream *ist,
1011                             AVSubtitle *sub,
1012                             int64_t pts)
1013 {
1014     static uint8_t *subtitle_out = NULL;
1015     int subtitle_out_max_size = 1024 * 1024;
1016     int subtitle_out_size, nb, i;
1017     AVCodecContext *enc;
1018     AVPacket pkt;
1019
1020     if (pts == AV_NOPTS_VALUE) {
1021         fprintf(stderr, "Subtitle packets must have a pts\n");
1022         if (exit_on_error)
1023             exit_program(1);
1024         return;
1025     }
1026
1027     enc = ost->st->codec;
1028
1029     if (!subtitle_out) {
1030         subtitle_out = av_malloc(subtitle_out_max_size);
1031     }
1032
1033     /* Note: DVB subtitle need one packet to draw them and one other
1034        packet to clear them */
1035     /* XXX: signal it in the codec context ? */
1036     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1037         nb = 2;
1038     else
1039         nb = 1;
1040
1041     for(i = 0; i < nb; i++) {
1042         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1043         // start_display_time is required to be 0
1044         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1045         sub->end_display_time -= sub->start_display_time;
1046         sub->start_display_time = 0;
1047         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1048                                                     subtitle_out_max_size, sub);
1049         if (subtitle_out_size < 0) {
1050             fprintf(stderr, "Subtitle encoding failed\n");
1051             exit_program(1);
1052         }
1053
1054         av_init_packet(&pkt);
1055         pkt.stream_index = ost->index;
1056         pkt.data = subtitle_out;
1057         pkt.size = subtitle_out_size;
1058         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1059         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1060             /* XXX: the pts correction is handled here. Maybe handling
1061                it in the codec would be better */
1062             if (i == 0)
1063                 pkt.pts += 90 * sub->start_display_time;
1064             else
1065                 pkt.pts += 90 * sub->end_display_time;
1066         }
1067         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1068     }
1069 }
1070
1071 static int bit_buffer_size= 1024*256;
1072 static uint8_t *bit_buffer= NULL;
1073
1074 static void do_video_out(AVFormatContext *s,
1075                          OutputStream *ost,
1076                          InputStream *ist,
1077                          AVFrame *in_picture,
1078                          int *frame_size, float quality)
1079 {
1080     int nb_frames, i, ret, av_unused resample_changed;
1081     AVFrame *final_picture, *formatted_picture;
1082     AVCodecContext *enc, *dec;
1083     double sync_ipts;
1084
1085     enc = ost->st->codec;
1086     dec = ist->st->codec;
1087
1088     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1089
1090     /* by default, we output a single frame */
1091     nb_frames = 1;
1092
1093     *frame_size = 0;
1094
1095     if(video_sync_method){
1096         double vdelta = sync_ipts - ost->sync_opts;
1097         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1098         if (vdelta < -1.1)
1099             nb_frames = 0;
1100         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1101             if(vdelta<=-0.6){
1102                 nb_frames=0;
1103             }else if(vdelta>0.6)
1104                 ost->sync_opts= lrintf(sync_ipts);
1105         }else if (vdelta > 1.1)
1106             nb_frames = lrintf(vdelta);
1107 //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);
1108         if (nb_frames == 0){
1109             ++nb_frames_drop;
1110             if (verbose>2)
1111                 fprintf(stderr, "*** drop!\n");
1112         }else if (nb_frames > 1) {
1113             nb_frames_dup += nb_frames - 1;
1114             if (verbose>2)
1115                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1116         }
1117     }else
1118         ost->sync_opts= lrintf(sync_ipts);
1119
1120     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1121     if (nb_frames <= 0)
1122         return;
1123
1124     formatted_picture = in_picture;
1125     final_picture = formatted_picture;
1126
1127     resample_changed = ost->resample_width   != dec->width  ||
1128                        ost->resample_height  != dec->height ||
1129                        ost->resample_pix_fmt != dec->pix_fmt;
1130
1131 #if !CONFIG_AVFILTER
1132     if (resample_changed) {
1133         av_log(NULL, AV_LOG_INFO,
1134                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1135                ist->file_index, ist->st->index,
1136                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1137                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1138         ost->resample_width   = dec->width;
1139         ost->resample_height  = dec->height;
1140         ost->resample_pix_fmt = dec->pix_fmt;
1141     }
1142
1143     ost->video_resample = dec->width   != enc->width  ||
1144                           dec->height  != enc->height ||
1145                           dec->pix_fmt != enc->pix_fmt;
1146
1147     if (ost->video_resample) {
1148         final_picture = &ost->resample_frame;
1149         if (!ost->img_resample_ctx || resample_changed) {
1150             /* initialize the destination picture */
1151             if (!ost->resample_frame.data[0]) {
1152                 avcodec_get_frame_defaults(&ost->resample_frame);
1153                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1154                                     enc->width, enc->height)) {
1155                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1156                     exit_program(1);
1157                 }
1158             }
1159             /* initialize a new scaler context */
1160             sws_freeContext(ost->img_resample_ctx);
1161             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1162                                                    enc->width, enc->height, enc->pix_fmt,
1163                                                    ost->sws_flags, NULL, NULL, NULL);
1164             if (ost->img_resample_ctx == NULL) {
1165                 fprintf(stderr, "Cannot get resampling context\n");
1166                 exit_program(1);
1167             }
1168         }
1169         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1170               0, ost->resample_height, final_picture->data, final_picture->linesize);
1171     }
1172 #else
1173     if (resample_changed) {
1174         avfilter_graph_free(&ost->graph);
1175         if (configure_video_filters(ist, ost)) {
1176             fprintf(stderr, "Error reinitialising filters!\n");
1177             exit_program(1);
1178         }
1179     }
1180 #endif
1181     if (resample_changed) {
1182         ost->resample_width   = dec->width;
1183         ost->resample_height  = dec->height;
1184         ost->resample_pix_fmt = dec->pix_fmt;
1185     }
1186
1187     /* duplicates frame if needed */
1188     for(i=0;i<nb_frames;i++) {
1189         AVPacket pkt;
1190         av_init_packet(&pkt);
1191         pkt.stream_index= ost->index;
1192
1193         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1194             /* raw pictures are written as AVPicture structure to
1195                avoid any copies. We support temorarily the older
1196                method. */
1197             AVFrame* old_frame = enc->coded_frame;
1198             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1199             pkt.data= (uint8_t *)final_picture;
1200             pkt.size=  sizeof(AVPicture);
1201             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1202             pkt.flags |= AV_PKT_FLAG_KEY;
1203
1204             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1205             enc->coded_frame = old_frame;
1206         } else {
1207             AVFrame big_picture;
1208
1209             big_picture= *final_picture;
1210             /* better than nothing: use input picture interlaced
1211                settings */
1212             big_picture.interlaced_frame = in_picture->interlaced_frame;
1213             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1214                 if(top_field_first == -1)
1215                     big_picture.top_field_first = in_picture->top_field_first;
1216                 else
1217                     big_picture.top_field_first = top_field_first;
1218             }
1219
1220             /* handles same_quant here. This is not correct because it may
1221                not be a global option */
1222             big_picture.quality = quality;
1223             if(!me_threshold)
1224                 big_picture.pict_type = 0;
1225 //            big_picture.pts = AV_NOPTS_VALUE;
1226             big_picture.pts= ost->sync_opts;
1227 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1228 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1229             if (ost->forced_kf_index < ost->forced_kf_count &&
1230                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1231                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1232                 ost->forced_kf_index++;
1233             }
1234             ret = avcodec_encode_video(enc,
1235                                        bit_buffer, bit_buffer_size,
1236                                        &big_picture);
1237             if (ret < 0) {
1238                 fprintf(stderr, "Video encoding failed\n");
1239                 exit_program(1);
1240             }
1241
1242             if(ret>0){
1243                 pkt.data= bit_buffer;
1244                 pkt.size= ret;
1245                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1246                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1247 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1248    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1249    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1250
1251                 if(enc->coded_frame->key_frame)
1252                     pkt.flags |= AV_PKT_FLAG_KEY;
1253                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1254                 *frame_size = ret;
1255                 video_size += ret;
1256                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1257                 //        enc->frame_number-1, ret, enc->pict_type);
1258                 /* if two pass, output log */
1259                 if (ost->logfile && enc->stats_out) {
1260                     fprintf(ost->logfile, "%s", enc->stats_out);
1261                 }
1262             }
1263         }
1264         ost->sync_opts++;
1265         ost->frame_number++;
1266     }
1267 }
1268
1269 static double psnr(double d){
1270     return -10.0*log(d)/log(10.0);
1271 }
1272
1273 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1274                            int frame_size)
1275 {
1276     AVCodecContext *enc;
1277     int frame_number;
1278     double ti1, bitrate, avg_bitrate;
1279
1280     /* this is executed just the first time do_video_stats is called */
1281     if (!vstats_file) {
1282         vstats_file = fopen(vstats_filename, "w");
1283         if (!vstats_file) {
1284             perror("fopen");
1285             exit_program(1);
1286         }
1287     }
1288
1289     enc = ost->st->codec;
1290     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1291         frame_number = ost->frame_number;
1292         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1293         if (enc->flags&CODEC_FLAG_PSNR)
1294             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1295
1296         fprintf(vstats_file,"f_size= %6d ", frame_size);
1297         /* compute pts value */
1298         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1299         if (ti1 < 0.01)
1300             ti1 = 0.01;
1301
1302         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1303         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1304         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1305             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1306         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1307     }
1308 }
1309
1310 static void print_report(AVFormatContext **output_files,
1311                          OutputStream **ost_table, int nb_ostreams,
1312                          int is_last_report)
1313 {
1314     char buf[1024];
1315     OutputStream *ost;
1316     AVFormatContext *oc;
1317     int64_t total_size;
1318     AVCodecContext *enc;
1319     int frame_number, vid, i;
1320     double bitrate;
1321     int64_t pts = INT64_MAX;
1322     static int64_t last_time = -1;
1323     static int qp_histogram[52];
1324
1325     if (!is_last_report) {
1326         int64_t cur_time;
1327         /* display the report every 0.5 seconds */
1328         cur_time = av_gettime();
1329         if (last_time == -1) {
1330             last_time = cur_time;
1331             return;
1332         }
1333         if ((cur_time - last_time) < 500000)
1334             return;
1335         last_time = cur_time;
1336     }
1337
1338
1339     oc = output_files[0];
1340
1341     total_size = avio_size(oc->pb);
1342     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1343         total_size= avio_tell(oc->pb);
1344
1345     buf[0] = '\0';
1346     vid = 0;
1347     for(i=0;i<nb_ostreams;i++) {
1348         float q = -1;
1349         ost = ost_table[i];
1350         enc = ost->st->codec;
1351         if (!ost->st->stream_copy && enc->coded_frame)
1352             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1353         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1354             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1355         }
1356         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1357             float t = (av_gettime()-timer_start) / 1000000.0;
1358
1359             frame_number = ost->frame_number;
1360             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1361                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1362             if(is_last_report)
1363                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1364             if(qp_hist){
1365                 int j;
1366                 int qp = lrintf(q);
1367                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1368                     qp_histogram[qp]++;
1369                 for(j=0; j<32; j++)
1370                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1371             }
1372             if (enc->flags&CODEC_FLAG_PSNR){
1373                 int j;
1374                 double error, error_sum=0;
1375                 double scale, scale_sum=0;
1376                 char type[3]= {'Y','U','V'};
1377                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1378                 for(j=0; j<3; j++){
1379                     if(is_last_report){
1380                         error= enc->error[j];
1381                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1382                     }else{
1383                         error= enc->coded_frame->error[j];
1384                         scale= enc->width*enc->height*255.0*255.0;
1385                     }
1386                     if(j) scale/=4;
1387                     error_sum += error;
1388                     scale_sum += scale;
1389                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1390                 }
1391                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1392             }
1393             vid = 1;
1394         }
1395         /* compute min output value */
1396         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1397                                       ost->st->time_base, AV_TIME_BASE_Q));
1398     }
1399
1400     if (verbose > 0 || is_last_report) {
1401         int hours, mins, secs, us;
1402         secs = pts / AV_TIME_BASE;
1403         us = pts % AV_TIME_BASE;
1404         mins = secs / 60;
1405         secs %= 60;
1406         hours = mins / 60;
1407         mins %= 60;
1408
1409         bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1410
1411         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1412                  "size=%8.0fkB time=", total_size / 1024.0);
1413         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1414                  "%02d:%02d:%02d.%02d ", hours, mins, secs,
1415                  (100 * us) / AV_TIME_BASE);
1416         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1417                  "bitrate=%6.1fkbits/s", bitrate);
1418
1419         if (nb_frames_dup || nb_frames_drop)
1420           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1421                   nb_frames_dup, nb_frames_drop);
1422
1423         if (verbose >= 0)
1424             fprintf(stderr, "%s    \r", buf);
1425
1426         fflush(stderr);
1427     }
1428
1429     if (is_last_report && verbose >= 0){
1430         int64_t raw= audio_size + video_size + extra_size;
1431         fprintf(stderr, "\n");
1432         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1433                 video_size/1024.0,
1434                 audio_size/1024.0,
1435                 extra_size/1024.0,
1436                 100.0*(total_size - raw)/raw
1437         );
1438     }
1439 }
1440
1441 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1442 {
1443     int fill_char = 0x00;
1444     if (sample_fmt == AV_SAMPLE_FMT_U8)
1445         fill_char = 0x80;
1446     memset(buf, fill_char, size);
1447 }
1448
1449 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1450 static int output_packet(InputStream *ist, int ist_index,
1451                          OutputStream **ost_table, int nb_ostreams,
1452                          const AVPacket *pkt)
1453 {
1454     AVFormatContext *os;
1455     OutputStream *ost;
1456     int ret, i;
1457     int got_output;
1458     AVFrame picture;
1459     void *buffer_to_free = NULL;
1460     static unsigned int samples_size= 0;
1461     AVSubtitle subtitle, *subtitle_to_free;
1462     int64_t pkt_pts = AV_NOPTS_VALUE;
1463 #if CONFIG_AVFILTER
1464     int frame_available;
1465 #endif
1466     float quality;
1467
1468     AVPacket avpkt;
1469     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1470
1471     if(ist->next_pts == AV_NOPTS_VALUE)
1472         ist->next_pts= ist->pts;
1473
1474     if (pkt == NULL) {
1475         /* EOF handling */
1476         av_init_packet(&avpkt);
1477         avpkt.data = NULL;
1478         avpkt.size = 0;
1479         goto handle_eof;
1480     } else {
1481         avpkt = *pkt;
1482     }
1483
1484     if(pkt->dts != AV_NOPTS_VALUE)
1485         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1486     if(pkt->pts != AV_NOPTS_VALUE)
1487         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1488
1489     //while we have more to decode or while the decoder did output something on EOF
1490     while (avpkt.size > 0 || (!pkt && got_output)) {
1491         uint8_t *data_buf, *decoded_data_buf;
1492         int data_size, decoded_data_size;
1493     handle_eof:
1494         ist->pts= ist->next_pts;
1495
1496         if(avpkt.size && avpkt.size != pkt->size &&
1497            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1498             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1499             ist->showed_multi_packet_warning=1;
1500         }
1501
1502         /* decode the packet if needed */
1503         decoded_data_buf = NULL; /* fail safe */
1504         decoded_data_size= 0;
1505         data_buf  = avpkt.data;
1506         data_size = avpkt.size;
1507         subtitle_to_free = NULL;
1508         if (ist->decoding_needed) {
1509             switch(ist->st->codec->codec_type) {
1510             case AVMEDIA_TYPE_AUDIO:{
1511                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1512                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1513                     av_free(samples);
1514                     samples= av_malloc(samples_size);
1515                 }
1516                 decoded_data_size= samples_size;
1517                     /* XXX: could avoid copy if PCM 16 bits with same
1518                        endianness as CPU */
1519                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1520                                             &avpkt);
1521                 if (ret < 0)
1522                     return ret;
1523                 avpkt.data += ret;
1524                 avpkt.size -= ret;
1525                 data_size   = ret;
1526                 got_output  = decoded_data_size > 0;
1527                 /* Some bug in mpeg audio decoder gives */
1528                 /* decoded_data_size < 0, it seems they are overflows */
1529                 if (!got_output) {
1530                     /* no audio frame */
1531                     continue;
1532                 }
1533                 decoded_data_buf = (uint8_t *)samples;
1534                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1535                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1536                 break;}
1537             case AVMEDIA_TYPE_VIDEO:
1538                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1539                     /* XXX: allocate picture correctly */
1540                     avcodec_get_frame_defaults(&picture);
1541                     avpkt.pts = pkt_pts;
1542                     avpkt.dts = ist->pts;
1543                     pkt_pts = AV_NOPTS_VALUE;
1544
1545                     ret = avcodec_decode_video2(ist->st->codec,
1546                                                 &picture, &got_output, &avpkt);
1547                     quality = same_quant ? picture.quality : 0;
1548                     if (ret < 0)
1549                         return ret;
1550                     if (!got_output) {
1551                         /* no picture yet */
1552                         goto discard_packet;
1553                     }
1554                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
1555                     if (ist->st->codec->time_base.num != 0) {
1556                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1557                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1558                                           ist->st->codec->time_base.num * ticks) /
1559                             ist->st->codec->time_base.den;
1560                     }
1561                     avpkt.size = 0;
1562                     buffer_to_free = NULL;
1563                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1564                     break;
1565             case AVMEDIA_TYPE_SUBTITLE:
1566                 ret = avcodec_decode_subtitle2(ist->st->codec,
1567                                                &subtitle, &got_output, &avpkt);
1568                 if (ret < 0)
1569                     return ret;
1570                 if (!got_output) {
1571                     goto discard_packet;
1572                 }
1573                 subtitle_to_free = &subtitle;
1574                 avpkt.size = 0;
1575                 break;
1576             default:
1577                 return -1;
1578             }
1579         } else {
1580             switch(ist->st->codec->codec_type) {
1581             case AVMEDIA_TYPE_AUDIO:
1582                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1583                     ist->st->codec->sample_rate;
1584                 break;
1585             case AVMEDIA_TYPE_VIDEO:
1586                 if (ist->st->codec->time_base.num != 0) {
1587                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1588                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1589                                       ist->st->codec->time_base.num * ticks) /
1590                         ist->st->codec->time_base.den;
1591                 }
1592                 break;
1593             }
1594             ret = avpkt.size;
1595             avpkt.size = 0;
1596         }
1597
1598 #if CONFIG_AVFILTER
1599         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1600         if (start_time == 0 || ist->pts >= start_time) {
1601             for(i=0;i<nb_ostreams;i++) {
1602                 ost = ost_table[i];
1603                 if (ost->input_video_filter && ost->source_index == ist_index) {
1604                     if (!picture.sample_aspect_ratio.num)
1605                         picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
1606                     picture.pts = ist->pts;
1607
1608                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, AV_VSRC_BUF_FLAG_OVERWRITE);
1609                 }
1610             }
1611         }
1612 #endif
1613
1614         // preprocess audio (volume)
1615         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1616             if (audio_volume != 256) {
1617                 short *volp;
1618                 volp = samples;
1619                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1620                     int v = ((*volp) * audio_volume + 128) >> 8;
1621                     if (v < -32768) v = -32768;
1622                     if (v >  32767) v = 32767;
1623                     *volp++ = v;
1624                 }
1625             }
1626         }
1627
1628         /* frame rate emulation */
1629         if (rate_emu) {
1630             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1631             int64_t now = av_gettime() - ist->start;
1632             if (pts > now)
1633                 usleep(pts - now);
1634         }
1635         /* if output time reached then transcode raw format,
1636            encode packets and output them */
1637         if (start_time == 0 || ist->pts >= start_time)
1638             for(i=0;i<nb_ostreams;i++) {
1639                 int frame_size;
1640
1641                 ost = ost_table[i];
1642                 if (ost->source_index == ist_index) {
1643 #if CONFIG_AVFILTER
1644                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1645                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1646                 while (frame_available) {
1647                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter) {
1648                         AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
1649                         if (av_vsink_buffer_get_video_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
1650                             goto cont;
1651                         if (ost->picref) {
1652                             avfilter_fill_frame_from_video_buffer_ref(&picture, ost->picref);
1653                             ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1654                         }
1655                     }
1656 #endif
1657                     os = output_files[ost->file_index];
1658
1659                     /* set the input output pts pairs */
1660                     //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1661
1662                     if (ost->encoding_needed) {
1663                         av_assert0(ist->decoding_needed);
1664                         switch(ost->st->codec->codec_type) {
1665                         case AVMEDIA_TYPE_AUDIO:
1666                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1667                             break;
1668                         case AVMEDIA_TYPE_VIDEO:
1669 #if CONFIG_AVFILTER
1670                             if (ost->picref->video && !ost->frame_aspect_ratio)
1671                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
1672 #endif
1673                             do_video_out(os, ost, ist, &picture, &frame_size,
1674                                          same_quant ? quality : ost->st->codec->global_quality);
1675                             if (vstats_filename && frame_size)
1676                                 do_video_stats(os, ost, frame_size);
1677                             break;
1678                         case AVMEDIA_TYPE_SUBTITLE:
1679                             do_subtitle_out(os, ost, ist, &subtitle,
1680                                             pkt->pts);
1681                             break;
1682                         default:
1683                             abort();
1684                         }
1685                     } else {
1686                         AVFrame avframe; //FIXME/XXX remove this
1687                         AVPicture pict;
1688                         AVPacket opkt;
1689                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1690
1691                         av_init_packet(&opkt);
1692
1693                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1694 #if !CONFIG_AVFILTER
1695                             continue;
1696 #else
1697                             goto cont;
1698 #endif
1699
1700                         /* no reencoding needed : output the packet directly */
1701                         /* force the input stream PTS */
1702
1703                         avcodec_get_frame_defaults(&avframe);
1704                         ost->st->codec->coded_frame= &avframe;
1705                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1706
1707                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1708                             audio_size += data_size;
1709                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1710                             video_size += data_size;
1711                             ost->sync_opts++;
1712                         }
1713
1714                         opkt.stream_index= ost->index;
1715                         if(pkt->pts != AV_NOPTS_VALUE)
1716                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1717                         else
1718                             opkt.pts= AV_NOPTS_VALUE;
1719
1720                         if (pkt->dts == AV_NOPTS_VALUE)
1721                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1722                         else
1723                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1724                         opkt.dts -= ost_tb_start_time;
1725
1726                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1727                         opkt.flags= pkt->flags;
1728
1729                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1730                         if(   ost->st->codec->codec_id != CODEC_ID_H264
1731                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1732                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1733                            ) {
1734                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1735                                 opkt.destruct= av_destruct_packet;
1736                         } else {
1737                             opkt.data = data_buf;
1738                             opkt.size = data_size;
1739                         }
1740
1741                         if (os->oformat->flags & AVFMT_RAWPICTURE) {
1742                             /* store AVPicture in AVPacket, as expected by the output format */
1743                             avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1744                             opkt.data = (uint8_t *)&pict;
1745                             opkt.size = sizeof(AVPicture);
1746                             opkt.flags |= AV_PKT_FLAG_KEY;
1747                         }
1748                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1749                         ost->st->codec->frame_number++;
1750                         ost->frame_number++;
1751                         av_free_packet(&opkt);
1752                     }
1753 #if CONFIG_AVFILTER
1754                     cont:
1755                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1756                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1757                     avfilter_unref_buffer(ost->picref);
1758                 }
1759 #endif
1760                 }
1761             }
1762
1763         av_free(buffer_to_free);
1764         /* XXX: allocate the subtitles in the codec ? */
1765         if (subtitle_to_free) {
1766             avsubtitle_free(subtitle_to_free);
1767             subtitle_to_free = NULL;
1768         }
1769     }
1770  discard_packet:
1771     if (pkt == NULL) {
1772         /* EOF handling */
1773
1774         for(i=0;i<nb_ostreams;i++) {
1775             ost = ost_table[i];
1776             if (ost->source_index == ist_index) {
1777                 AVCodecContext *enc= ost->st->codec;
1778                 os = output_files[ost->file_index];
1779
1780                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1781                     continue;
1782                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1783                     continue;
1784
1785                 if (ost->encoding_needed) {
1786                     for(;;) {
1787                         AVPacket pkt;
1788                         int fifo_bytes;
1789                         av_init_packet(&pkt);
1790                         pkt.stream_index= ost->index;
1791
1792                         switch(ost->st->codec->codec_type) {
1793                         case AVMEDIA_TYPE_AUDIO:
1794                             fifo_bytes = av_fifo_size(ost->fifo);
1795                             ret = 0;
1796                             /* encode any samples remaining in fifo */
1797                             if (fifo_bytes > 0) {
1798                                 int osize = av_get_bytes_per_sample(enc->sample_fmt);
1799                                 int fs_tmp = enc->frame_size;
1800
1801                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1802                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1803                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
1804                                 } else { /* pad */
1805                                     int frame_bytes = enc->frame_size*osize*enc->channels;
1806                                     if (allocated_audio_buf_size < frame_bytes)
1807                                         exit_program(1);
1808                                     generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1809                                 }
1810
1811                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1812                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1813                                                           ost->st->time_base.num, enc->sample_rate);
1814                                 enc->frame_size = fs_tmp;
1815                             }
1816                             if(ret <= 0) {
1817                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1818                             }
1819                             if (ret < 0) {
1820                                 fprintf(stderr, "Audio encoding failed\n");
1821                                 exit_program(1);
1822                             }
1823                             audio_size += ret;
1824                             pkt.flags |= AV_PKT_FLAG_KEY;
1825                             break;
1826                         case AVMEDIA_TYPE_VIDEO:
1827                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1828                             if (ret < 0) {
1829                                 fprintf(stderr, "Video encoding failed\n");
1830                                 exit_program(1);
1831                             }
1832                             video_size += ret;
1833                             if(enc->coded_frame && enc->coded_frame->key_frame)
1834                                 pkt.flags |= AV_PKT_FLAG_KEY;
1835                             if (ost->logfile && enc->stats_out) {
1836                                 fprintf(ost->logfile, "%s", enc->stats_out);
1837                             }
1838                             break;
1839                         default:
1840                             ret=-1;
1841                         }
1842
1843                         if(ret<=0)
1844                             break;
1845                         pkt.data= bit_buffer;
1846                         pkt.size= ret;
1847                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1848                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1849                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1850                     }
1851                 }
1852             }
1853         }
1854     }
1855
1856     return 0;
1857 }
1858
1859 static void print_sdp(AVFormatContext **avc, int n)
1860 {
1861     char sdp[2048];
1862
1863     av_sdp_create(avc, n, sdp, sizeof(sdp));
1864     printf("SDP:\n%s\n", sdp);
1865     fflush(stdout);
1866 }
1867
1868 /*
1869  * The following code is the main loop of the file converter
1870  */
1871 static int transcode(AVFormatContext **output_files,
1872                      int nb_output_files,
1873                      InputFile *input_files,
1874                      int nb_input_files)
1875 {
1876     int ret = 0, i, j, k, n, nb_ostreams = 0, step;
1877
1878     AVFormatContext *is, *os;
1879     AVCodecContext *codec, *icodec;
1880     OutputStream *ost, **ost_table = NULL;
1881     InputStream *ist;
1882     char error[1024];
1883     int key;
1884     int want_sdp = 1;
1885     uint8_t no_packet[MAX_FILES]={0};
1886     int no_packet_count=0;
1887     int nb_frame_threshold[AVMEDIA_TYPE_NB]={0};
1888     int nb_streams[AVMEDIA_TYPE_NB]={0};
1889
1890     if (rate_emu)
1891         for (i = 0; i < nb_input_streams; i++)
1892             input_streams[i].start = av_gettime();
1893
1894     /* output stream init */
1895     nb_ostreams = 0;
1896     for(i=0;i<nb_output_files;i++) {
1897         os = output_files[i];
1898         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1899             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
1900             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1901             ret = AVERROR(EINVAL);
1902             goto fail;
1903         }
1904         nb_ostreams += os->nb_streams;
1905     }
1906
1907     ost_table = av_mallocz(sizeof(OutputStream *) * nb_ostreams);
1908     if (!ost_table)
1909         goto fail;
1910
1911     for(k=0;k<nb_output_files;k++) {
1912         os = output_files[k];
1913         for(i=0;i<os->nb_streams;i++,n++) {
1914             nb_streams[os->streams[i]->codec->codec_type]++;
1915         }
1916     }
1917     for(step=1<<30; step; step>>=1){
1918         int found_streams[AVMEDIA_TYPE_NB]={0};
1919         for(j=0; j<AVMEDIA_TYPE_NB; j++)
1920             nb_frame_threshold[j] += step;
1921
1922         for(j=0; j<nb_input_streams; j++) {
1923             int skip=0;
1924             ist = &input_streams[j];
1925             if(opt_programid){
1926                 int pi,si;
1927                 AVFormatContext *f= input_files[ ist->file_index ].ctx;
1928                 skip=1;
1929                 for(pi=0; pi<f->nb_programs; pi++){
1930                     AVProgram *p= f->programs[pi];
1931                     if(p->id == opt_programid)
1932                         for(si=0; si<p->nb_stream_indexes; si++){
1933                             if(f->streams[ p->stream_index[si] ] == ist->st)
1934                                 skip=0;
1935                         }
1936                 }
1937             }
1938             if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip
1939                 && nb_frame_threshold[ist->st->codec->codec_type] <= ist->st->codec_info_nb_frames){
1940                 found_streams[ist->st->codec->codec_type]++;
1941             }
1942         }
1943         for(j=0; j<AVMEDIA_TYPE_NB; j++)
1944             if(found_streams[j] < nb_streams[j])
1945                 nb_frame_threshold[j] -= step;
1946     }
1947     n = 0;
1948     for(k=0;k<nb_output_files;k++) {
1949         os = output_files[k];
1950         for (i = 0; i < os->nb_streams; i++, n++)
1951             ost_table[n] = output_streams_for_file[k][i];
1952     }
1953
1954     /* for each output stream, we compute the right encoding parameters */
1955     for(i=0;i<nb_ostreams;i++) {
1956         ost = ost_table[i];
1957         os = output_files[ost->file_index];
1958         ist = &input_streams[ost->source_index];
1959
1960         codec = ost->st->codec;
1961         icodec = ist->st->codec;
1962
1963         ost->st->disposition = ist->st->disposition;
1964         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1965         codec->chroma_sample_location = icodec->chroma_sample_location;
1966
1967         if (ost->st->stream_copy) {
1968             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1969
1970             if (extra_size > INT_MAX)
1971                 goto fail;
1972
1973             /* if stream_copy is selected, no need to decode or encode */
1974             codec->codec_id = icodec->codec_id;
1975             codec->codec_type = icodec->codec_type;
1976
1977             if(!codec->codec_tag){
1978                 if(   !os->oformat->codec_tag
1979                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1980                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1981                     codec->codec_tag = icodec->codec_tag;
1982             }
1983
1984             codec->bit_rate = icodec->bit_rate;
1985             codec->rc_max_rate    = icodec->rc_max_rate;
1986             codec->rc_buffer_size = icodec->rc_buffer_size;
1987             codec->extradata= av_mallocz(extra_size);
1988             if (!codec->extradata)
1989                 goto fail;
1990             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1991             codec->extradata_size= icodec->extradata_size;
1992
1993             codec->time_base = ist->st->time_base;
1994             if(!strcmp(os->oformat->name, "avi")) {
1995                 if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
1996                     codec->time_base = icodec->time_base;
1997                     codec->time_base.num *= icodec->ticks_per_frame;
1998                     codec->time_base.den *= 2;
1999                 }
2000             } else if(!(os->oformat->flags & AVFMT_VARIABLE_FPS)) {
2001                 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){
2002                     codec->time_base = icodec->time_base;
2003                     codec->time_base.num *= icodec->ticks_per_frame;
2004                 }
2005             }
2006             av_reduce(&codec->time_base.num, &codec->time_base.den,
2007                         codec->time_base.num, codec->time_base.den, INT_MAX);
2008
2009             switch(codec->codec_type) {
2010             case AVMEDIA_TYPE_AUDIO:
2011                 if(audio_volume != 256) {
2012                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2013                     exit_program(1);
2014                 }
2015                 codec->channel_layout = icodec->channel_layout;
2016                 codec->sample_rate = icodec->sample_rate;
2017                 codec->channels = icodec->channels;
2018                 codec->frame_size = icodec->frame_size;
2019                 codec->audio_service_type = icodec->audio_service_type;
2020                 codec->block_align= icodec->block_align;
2021                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2022                     codec->block_align= 0;
2023                 if(codec->codec_id == CODEC_ID_AC3)
2024                     codec->block_align= 0;
2025                 break;
2026             case AVMEDIA_TYPE_VIDEO:
2027                 codec->pix_fmt = icodec->pix_fmt;
2028                 codec->width = icodec->width;
2029                 codec->height = icodec->height;
2030                 codec->has_b_frames = icodec->has_b_frames;
2031                 if (!codec->sample_aspect_ratio.num) {
2032                     codec->sample_aspect_ratio =
2033                     ost->st->sample_aspect_ratio =
2034                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2035                         ist->st->codec->sample_aspect_ratio.num ?
2036                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2037                 }
2038                 break;
2039             case AVMEDIA_TYPE_SUBTITLE:
2040                 codec->width = icodec->width;
2041                 codec->height = icodec->height;
2042                 break;
2043             case AVMEDIA_TYPE_DATA:
2044                 break;
2045             default:
2046                 abort();
2047             }
2048         } else {
2049             if (!ost->enc)
2050                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2051             switch(codec->codec_type) {
2052             case AVMEDIA_TYPE_AUDIO:
2053                 ost->fifo= av_fifo_alloc(1024);
2054                 if(!ost->fifo)
2055                     goto fail;
2056                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2057                 if (!codec->sample_rate) {
2058                     codec->sample_rate = icodec->sample_rate;
2059                 }
2060                 choose_sample_rate(ost->st, ost->enc);
2061                 codec->time_base = (AVRational){1, codec->sample_rate};
2062                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2063                     codec->sample_fmt = icodec->sample_fmt;
2064                 choose_sample_fmt(ost->st, ost->enc);
2065                 if (!codec->channels) {
2066                     codec->channels = icodec->channels;
2067                     codec->channel_layout = icodec->channel_layout;
2068                 }
2069                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2070                     codec->channel_layout = 0;
2071                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2072                 icodec->request_channels = codec->channels;
2073                 ist->decoding_needed = 1;
2074                 ost->encoding_needed = 1;
2075                 ost->resample_sample_fmt  = icodec->sample_fmt;
2076                 ost->resample_sample_rate = icodec->sample_rate;
2077                 ost->resample_channels    = icodec->channels;
2078                 break;
2079             case AVMEDIA_TYPE_VIDEO:
2080                 if (codec->pix_fmt == PIX_FMT_NONE)
2081                     codec->pix_fmt = icodec->pix_fmt;
2082                 choose_pixel_fmt(ost->st, ost->enc);
2083
2084                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2085                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2086                     exit_program(1);
2087                 }
2088
2089                 if (!codec->width || !codec->height) {
2090                     codec->width  = icodec->width;
2091                     codec->height = icodec->height;
2092                 }
2093
2094                 ost->video_resample = codec->width   != icodec->width  ||
2095                                       codec->height  != icodec->height ||
2096                                       codec->pix_fmt != icodec->pix_fmt;
2097                 if (ost->video_resample) {
2098                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2099                 }
2100
2101                 ost->resample_height = icodec->height;
2102                 ost->resample_width  = icodec->width;
2103                 ost->resample_pix_fmt= icodec->pix_fmt;
2104                 ost->encoding_needed = 1;
2105                 ist->decoding_needed = 1;
2106
2107                 if (!ost->frame_rate.num)
2108                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2109                 if (ost->enc && ost->enc->supported_framerates && !force_fps) {
2110                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2111                     ost->frame_rate = ost->enc->supported_framerates[idx];
2112                 }
2113                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2114                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2115                    && (video_sync_method==1 || (video_sync_method<0 && !(os->oformat->flags & AVFMT_VARIABLE_FPS)))){
2116                     av_log(os, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2117                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2118                 }
2119
2120 #if CONFIG_AVFILTER
2121                 if (configure_video_filters(ist, ost)) {
2122                     fprintf(stderr, "Error opening filters!\n");
2123                     exit(1);
2124                 }
2125 #endif
2126                 break;
2127             case AVMEDIA_TYPE_SUBTITLE:
2128                 ost->encoding_needed = 1;
2129                 ist->decoding_needed = 1;
2130                 break;
2131             default:
2132                 abort();
2133                 break;
2134             }
2135             /* two pass mode */
2136             if (ost->encoding_needed && codec->codec_id != CODEC_ID_H264 &&
2137                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2138                 char logfilename[1024];
2139                 FILE *f;
2140
2141                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2142                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2143                          i);
2144                 if (codec->flags & CODEC_FLAG_PASS1) {
2145                     f = fopen(logfilename, "wb");
2146                     if (!f) {
2147                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2148                         exit_program(1);
2149                     }
2150                     ost->logfile = f;
2151                 } else {
2152                     char  *logbuffer;
2153                     size_t logbuffer_size;
2154                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2155                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2156                         exit_program(1);
2157                     }
2158                     codec->stats_in = logbuffer;
2159                 }
2160             }
2161         }
2162         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2163             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2164             int size= codec->width * codec->height;
2165             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 1664);
2166         }
2167     }
2168
2169     if (!bit_buffer)
2170         bit_buffer = av_malloc(bit_buffer_size);
2171     if (!bit_buffer) {
2172         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2173                 bit_buffer_size);
2174         ret = AVERROR(ENOMEM);
2175         goto fail;
2176     }
2177
2178     /* open each encoder */
2179     for(i=0;i<nb_ostreams;i++) {
2180         ost = ost_table[i];
2181         if (ost->encoding_needed) {
2182             AVCodec *codec = ost->enc;
2183             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2184             if (!codec) {
2185                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2186                          ost->st->codec->codec_id, ost->file_index, ost->index);
2187                 ret = AVERROR(EINVAL);
2188                 goto dump_format;
2189             }
2190             if (dec->subtitle_header) {
2191                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2192                 if (!ost->st->codec->subtitle_header) {
2193                     ret = AVERROR(ENOMEM);
2194                     goto dump_format;
2195                 }
2196                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2197                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2198             }
2199             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2200                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2201                         ost->file_index, ost->index);
2202                 ret = AVERROR(EINVAL);
2203                 goto dump_format;
2204             }
2205             assert_codec_experimental(ost->st->codec, 1);
2206             assert_avoptions(ost->opts);
2207             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2208                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2209                                              "It takes bits/s as argument, not kbits/s\n");
2210             extra_size += ost->st->codec->extradata_size;
2211         }
2212     }
2213
2214     /* open each decoder */
2215     for (i = 0; i < nb_input_streams; i++) {
2216         ist = &input_streams[i];
2217         if (ist->decoding_needed) {
2218             AVCodec *codec = ist->dec;
2219             if (!codec)
2220                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2221             if (!codec) {
2222                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2223                         ist->st->codec->codec_id, ist->file_index, ist->st->index);
2224                 ret = AVERROR(EINVAL);
2225                 goto dump_format;
2226             }
2227             if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2228                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2229                         ist->file_index, ist->st->index);
2230                 ret = AVERROR(EINVAL);
2231                 goto dump_format;
2232             }
2233             assert_codec_experimental(ist->st->codec, 0);
2234             assert_avoptions(ost->opts);
2235         }
2236     }
2237
2238     /* init pts */
2239     for (i = 0; i < nb_input_streams; i++) {
2240         AVStream *st;
2241         ist = &input_streams[i];
2242         st= ist->st;
2243         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2244         ist->next_pts = AV_NOPTS_VALUE;
2245         ist->is_start = 1;
2246     }
2247
2248     /* open files and write file headers */
2249     for(i=0;i<nb_output_files;i++) {
2250         os = output_files[i];
2251         if (avformat_write_header(os, &output_opts[i]) < 0) {
2252             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2253             ret = AVERROR(EINVAL);
2254             goto dump_format;
2255         }
2256 //        assert_avoptions(output_opts[i]);
2257         if (strcmp(output_files[i]->oformat->name, "rtp")) {
2258             want_sdp = 0;
2259         }
2260     }
2261
2262  dump_format:
2263     /* dump the file output parameters - cannot be done before in case
2264        of stream copy */
2265     for(i=0;i<nb_output_files;i++) {
2266         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
2267     }
2268
2269     /* dump the stream mapping */
2270     if (verbose >= 0) {
2271         fprintf(stderr, "Stream mapping:\n");
2272         for(i=0;i<nb_ostreams;i++) {
2273             ost = ost_table[i];
2274             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2275                     input_streams[ost->source_index].file_index,
2276                     input_streams[ost->source_index].st->index,
2277                     ost->file_index,
2278                     ost->index);
2279             if (ost->sync_ist != &input_streams[ost->source_index])
2280                 fprintf(stderr, " [sync #%d.%d]",
2281                         ost->sync_ist->file_index,
2282                         ost->sync_ist->st->index);
2283             fprintf(stderr, "\n");
2284         }
2285     }
2286
2287     if (ret) {
2288         fprintf(stderr, "%s\n", error);
2289         goto fail;
2290     }
2291
2292     if (want_sdp) {
2293         print_sdp(output_files, nb_output_files);
2294     }
2295
2296     if (!using_stdin) {
2297         if(verbose >= 0)
2298             fprintf(stderr, "Press [q] to stop, [?] for help\n");
2299         avio_set_interrupt_cb(decode_interrupt_cb);
2300     }
2301     term_init();
2302
2303     timer_start = av_gettime();
2304
2305     for(; received_sigterm == 0;) {
2306         int file_index, ist_index;
2307         AVPacket pkt;
2308         double ipts_min;
2309         double opts_min;
2310
2311     redo:
2312         ipts_min= 1e100;
2313         opts_min= 1e100;
2314         /* if 'q' pressed, exits */
2315         if (!using_stdin) {
2316             if (q_pressed)
2317                 break;
2318             /* read_key() returns 0 on EOF */
2319             key = read_key();
2320             if (key == 'q')
2321                 break;
2322             if (key == '+') verbose++;
2323             if (key == '-') verbose--;
2324             if (key == 's') qp_hist     ^= 1;
2325             if (key == 'h'){
2326                 if (do_hex_dump){
2327                     do_hex_dump = do_pkt_dump = 0;
2328                 } else if(do_pkt_dump){
2329                     do_hex_dump = 1;
2330                 } else
2331                     do_pkt_dump = 1;
2332                 av_log_set_level(AV_LOG_DEBUG);
2333             }
2334             if (key == 'd' || key == 'D'){
2335                 int debug=0;
2336                 if(key == 'D') {
2337                     debug = input_streams[0].st->codec->debug<<1;
2338                     if(!debug) debug = 1;
2339                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2340                         debug += debug;
2341                 }else
2342                     scanf("%d", &debug);
2343                 for(i=0;i<nb_input_streams;i++) {
2344                     input_streams[i].st->codec->debug = debug;
2345                 }
2346                 for(i=0;i<nb_ostreams;i++) {
2347                     ost = ost_table[i];
2348                     ost->st->codec->debug = debug;
2349                 }
2350                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2351                 fprintf(stderr,"debug=%d\n", debug);
2352             }
2353             if (key == '?'){
2354                 fprintf(stderr, "key    function\n"
2355                                 "?      show this help\n"
2356                                 "+      increase verbosity\n"
2357                                 "-      decrease verbosity\n"
2358                                 "D      cycle through available debug modes\n"
2359                                 "h      dump packets/hex press to cycle through the 3 states\n"
2360                                 "q      quit\n"
2361                                 "s      Show QP histogram\n"
2362                 );
2363             }
2364         }
2365
2366         /* select the stream that we must read now by looking at the
2367            smallest output pts */
2368         file_index = -1;
2369         for(i=0;i<nb_ostreams;i++) {
2370             double ipts, opts;
2371             ost = ost_table[i];
2372             os = output_files[ost->file_index];
2373             ist = &input_streams[ost->source_index];
2374             if(ist->is_past_recording_time || no_packet[ist->file_index])
2375                 continue;
2376                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2377             ipts = (double)ist->pts;
2378             if (!input_files[ist->file_index].eof_reached){
2379                 if(ipts < ipts_min) {
2380                     ipts_min = ipts;
2381                     if(input_sync ) file_index = ist->file_index;
2382                 }
2383                 if(opts < opts_min) {
2384                     opts_min = opts;
2385                     if(!input_sync) file_index = ist->file_index;
2386                 }
2387             }
2388             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2389                 file_index= -1;
2390                 break;
2391             }
2392         }
2393         /* if none, if is finished */
2394         if (file_index < 0) {
2395             if(no_packet_count){
2396                 no_packet_count=0;
2397                 memset(no_packet, 0, sizeof(no_packet));
2398                 usleep(10000);
2399                 continue;
2400             }
2401             break;
2402         }
2403
2404         /* finish if limit size exhausted */
2405         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
2406             break;
2407
2408         /* read a frame from it and output it in the fifo */
2409         is = input_files[file_index].ctx;
2410         ret= av_read_frame(is, &pkt);
2411         if(ret == AVERROR(EAGAIN)){
2412             no_packet[file_index]=1;
2413             no_packet_count++;
2414             continue;
2415         }
2416         if (ret < 0) {
2417             input_files[file_index].eof_reached = 1;
2418             if (opt_shortest)
2419                 break;
2420             else
2421                 continue;
2422         }
2423
2424         no_packet_count=0;
2425         memset(no_packet, 0, sizeof(no_packet));
2426
2427         if (do_pkt_dump) {
2428             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2429                              is->streams[pkt.stream_index]);
2430         }
2431         /* the following test is needed in case new streams appear
2432            dynamically in stream : we ignore them */
2433         if (pkt.stream_index >= input_files[file_index].nb_streams)
2434             goto discard_packet;
2435         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2436         ist = &input_streams[ist_index];
2437         if (ist->discard)
2438             goto discard_packet;
2439
2440         if (pkt.dts != AV_NOPTS_VALUE)
2441             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2442         if (pkt.pts != AV_NOPTS_VALUE)
2443             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2444
2445         if (ist->ts_scale) {
2446             if(pkt.pts != AV_NOPTS_VALUE)
2447                 pkt.pts *= ist->ts_scale;
2448             if(pkt.dts != AV_NOPTS_VALUE)
2449                 pkt.dts *= ist->ts_scale;
2450         }
2451
2452 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files[ist->file_index].ts_offset, ist->st->codec->codec_type);
2453         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2454             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2455             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2456             int64_t delta= pkt_dts - ist->next_pts;
2457             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2458                 input_files[ist->file_index].ts_offset -= delta;
2459                 if (verbose > 2)
2460                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2461                             delta, input_files[ist->file_index].ts_offset);
2462                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2463                 if(pkt.pts != AV_NOPTS_VALUE)
2464                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2465             }
2466         }
2467
2468         /* finish if recording time exhausted */
2469         if (recording_time != INT64_MAX &&
2470             (pkt.pts != AV_NOPTS_VALUE ?
2471                 av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000})
2472                     :
2473                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, recording_time + start_time, (AVRational){1, 1000000})
2474             )>= 0) {
2475             ist->is_past_recording_time = 1;
2476             goto discard_packet;
2477         }
2478
2479         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2480         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2481
2482             if (verbose >= 0)
2483                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2484                         ist->file_index, ist->st->index);
2485             if (exit_on_error)
2486                 exit_program(1);
2487             av_free_packet(&pkt);
2488             goto redo;
2489         }
2490
2491     discard_packet:
2492         av_free_packet(&pkt);
2493
2494         /* dump report by using the output first video and audio streams */
2495         print_report(output_files, ost_table, nb_ostreams, 0);
2496     }
2497
2498     /* at the end of stream, we must flush the decoder buffers */
2499     for (i = 0; i < nb_input_streams; i++) {
2500         ist = &input_streams[i];
2501         if (ist->decoding_needed) {
2502             output_packet(ist, i, ost_table, nb_ostreams, NULL);
2503         }
2504     }
2505
2506     term_exit();
2507
2508     /* write the trailer if needed and close file */
2509     for(i=0;i<nb_output_files;i++) {
2510         os = output_files[i];
2511         av_write_trailer(os);
2512     }
2513
2514     /* dump report by using the first video and audio streams */
2515     print_report(output_files, ost_table, nb_ostreams, 1);
2516
2517     /* close each encoder */
2518     for(i=0;i<nb_ostreams;i++) {
2519         ost = ost_table[i];
2520         if (ost->encoding_needed) {
2521             av_freep(&ost->st->codec->stats_in);
2522             avcodec_close(ost->st->codec);
2523         }
2524 #if CONFIG_AVFILTER
2525         avfilter_graph_free(&ost->graph);
2526 #endif
2527     }
2528
2529     /* close each decoder */
2530     for (i = 0; i < nb_input_streams; i++) {
2531         ist = &input_streams[i];
2532         if (ist->decoding_needed) {
2533             avcodec_close(ist->st->codec);
2534         }
2535     }
2536
2537     /* finished ! */
2538     ret = 0;
2539
2540  fail:
2541     av_freep(&bit_buffer);
2542
2543     if (ost_table) {
2544         for(i=0;i<nb_ostreams;i++) {
2545             ost = ost_table[i];
2546             if (ost) {
2547                 if (ost->st->stream_copy)
2548                     av_freep(&ost->st->codec->extradata);
2549                 if (ost->logfile) {
2550                     fclose(ost->logfile);
2551                     ost->logfile = NULL;
2552                 }
2553                 av_fifo_free(ost->fifo); /* works even if fifo is not
2554                                              initialized but set to zero */
2555                 av_freep(&ost->st->codec->subtitle_header);
2556                 av_free(ost->resample_frame.data[0]);
2557                 av_free(ost->forced_kf_pts);
2558                 if (ost->video_resample)
2559                     sws_freeContext(ost->img_resample_ctx);
2560                 if (ost->resample)
2561                     audio_resample_close(ost->resample);
2562                 if (ost->reformat_ctx)
2563                     av_audio_convert_free(ost->reformat_ctx);
2564                 av_dict_free(&ost->opts);
2565                 av_free(ost);
2566             }
2567         }
2568         av_free(ost_table);
2569     }
2570     return ret;
2571 }
2572
2573 static int opt_format(const char *opt, const char *arg)
2574 {
2575     last_asked_format = arg;
2576     return 0;
2577 }
2578
2579 static int opt_video_rc_override_string(const char *opt, const char *arg)
2580 {
2581     video_rc_override_string = arg;
2582     return 0;
2583 }
2584
2585 static int opt_me_threshold(const char *opt, const char *arg)
2586 {
2587     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2588     return 0;
2589 }
2590
2591 static int opt_verbose(const char *opt, const char *arg)
2592 {
2593     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2594     return 0;
2595 }
2596
2597 static int opt_frame_rate(const char *opt, const char *arg)
2598 {
2599     if (av_parse_video_rate(&frame_rate, arg) < 0) {
2600         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2601         exit_program(1);
2602     }
2603     return 0;
2604 }
2605
2606 static int opt_frame_crop(const char *opt, const char *arg)
2607 {
2608     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
2609     return AVERROR(EINVAL);
2610 }
2611
2612 static int opt_frame_size(const char *opt, const char *arg)
2613 {
2614     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2615         fprintf(stderr, "Incorrect frame size\n");
2616         return AVERROR(EINVAL);
2617     }
2618     return 0;
2619 }
2620
2621 static int opt_pad(const char *opt, const char *arg) {
2622     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
2623     return -1;
2624 }
2625
2626 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2627 {
2628     if (strcmp(arg, "list")) {
2629         frame_pix_fmt = av_get_pix_fmt(arg);
2630         if (frame_pix_fmt == PIX_FMT_NONE) {
2631             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2632             return AVERROR(EINVAL);
2633         }
2634     } else {
2635         opt_pix_fmts(NULL, NULL);
2636         exit_program(0);
2637     }
2638     return 0;
2639 }
2640
2641 static int opt_frame_aspect_ratio(const char *opt, const char *arg)
2642 {
2643     int x = 0, y = 0;
2644     double ar = 0;
2645     const char *p;
2646     char *end;
2647
2648     p = strchr(arg, ':');
2649     if (p) {
2650         x = strtol(arg, &end, 10);
2651         if (end == p)
2652             y = strtol(end+1, &end, 10);
2653         if (x > 0 && y > 0)
2654             ar = (double)x / (double)y;
2655     } else
2656         ar = strtod(arg, NULL);
2657
2658     if (!ar) {
2659         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2660         return AVERROR(EINVAL);
2661     }
2662     frame_aspect_ratio = ar;
2663     return 0;
2664 }
2665
2666 static int opt_metadata(const char *opt, const char *arg)
2667 {
2668     char *mid= strchr(arg, '=');
2669
2670     if(!mid){
2671         fprintf(stderr, "Missing =\n");
2672         exit_program(1);
2673     }
2674     *mid++= 0;
2675
2676     av_dict_set(&metadata, arg, mid, 0);
2677
2678     return 0;
2679 }
2680
2681 static int opt_qscale(const char *opt, const char *arg)
2682 {
2683     video_qscale = parse_number_or_die(opt, arg, OPT_FLOAT, 0, 255);
2684     if (video_qscale <= 0 || video_qscale > 255) {
2685         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2686         return AVERROR(EINVAL);
2687     }
2688     return 0;
2689 }
2690
2691 static int opt_top_field_first(const char *opt, const char *arg)
2692 {
2693     top_field_first = parse_number_or_die(opt, arg, OPT_INT, 0, 1);
2694     return opt_default(opt, arg);
2695 }
2696
2697 static int opt_thread_count(const char *opt, const char *arg)
2698 {
2699     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2700 #if !HAVE_THREADS
2701     if (verbose >= 0)
2702         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2703 #endif
2704     return 0;
2705 }
2706
2707 static int opt_audio_sample_fmt(const char *opt, const char *arg)
2708 {
2709     if (strcmp(arg, "list")) {
2710         audio_sample_fmt = av_get_sample_fmt(arg);
2711         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
2712             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
2713             return AVERROR(EINVAL);
2714         }
2715     } else {
2716         int i;
2717         char fmt_str[128];
2718         for (i = -1; i < AV_SAMPLE_FMT_NB; i++)
2719             printf("%s\n", av_get_sample_fmt_string(fmt_str, sizeof(fmt_str), i));
2720         exit_program(0);
2721     }
2722     return 0;
2723 }
2724
2725 static int opt_audio_rate(const char *opt, const char *arg)
2726 {
2727     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2728     return 0;
2729 }
2730
2731 static int opt_audio_channels(const char *opt, const char *arg)
2732 {
2733     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2734     return 0;
2735 }
2736
2737 static int opt_codec(const char *opt, const char *arg)
2738 {
2739     return av_dict_set(&codec_names, opt, arg, 0);
2740 }
2741
2742 static int opt_audio_codec(const char *opt, const char *arg)
2743 {
2744     return opt_codec("codec:a", arg);
2745 }
2746
2747 static int opt_video_codec(const char *opt, const char *arg)
2748 {
2749     return opt_codec("codec:v", arg);
2750 }
2751
2752 static int opt_subtitle_codec(const char *opt, const char *arg)
2753 {
2754     return opt_codec("codec:s", arg);
2755 }
2756
2757 static int opt_data_codec(const char *opt, const char *arg)
2758 {
2759     return opt_codec("codec:d", arg);
2760 }
2761
2762 static int opt_codec_tag(const char *opt, const char *arg)
2763 {
2764     char *tail;
2765     uint32_t *codec_tag;
2766
2767     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
2768                 !strcmp(opt, "vtag") ? &video_codec_tag :
2769                 !strcmp(opt, "stag") ? &subtitle_codec_tag : NULL;
2770     if (!codec_tag)
2771         return -1;
2772
2773     *codec_tag = strtol(arg, &tail, 0);
2774     if (!tail || *tail)
2775         *codec_tag = AV_RL32(arg);
2776
2777     return 0;
2778 }
2779
2780 static int opt_map(const char *opt, const char *arg)
2781 {
2782     StreamMap *m = NULL;
2783     int i, negative = 0, file_idx;
2784     int sync_file_idx = -1, sync_stream_idx;
2785     char *p, *sync;
2786     char *map;
2787
2788     if (*arg == '-') {
2789         negative = 1;
2790         arg++;
2791     }
2792     map = av_strdup(arg);
2793
2794     /* parse sync stream first, just pick first matching stream */
2795     if (sync = strchr(map, ',')) {
2796         *sync = 0;
2797         sync_file_idx = strtol(sync + 1, &sync, 0);
2798         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2799             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2800             exit_program(1);
2801         }
2802         if (*sync)
2803             sync++;
2804         for (i = 0; i < input_files[sync_file_idx].ctx->nb_streams; i++)
2805             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2806                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2807                 sync_stream_idx = i;
2808                 break;
2809             }
2810         if (i == input_files[sync_file_idx].ctx->nb_streams) {
2811             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2812                                        "match any streams.\n", arg);
2813             exit_program(1);
2814         }
2815     }
2816
2817
2818     file_idx = strtol(map, &p, 0);
2819     if (file_idx >= nb_input_files || file_idx < 0) {
2820         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2821         exit_program(1);
2822     }
2823     if (negative)
2824         /* disable some already defined maps */
2825         for (i = 0; i < nb_stream_maps; i++) {
2826             m = &stream_maps[i];
2827             if (check_stream_specifier(input_files[m->file_index].ctx,
2828                                        input_files[m->file_index].ctx->streams[m->stream_index],
2829                                        *p == ':' ? p + 1 : p) > 0)
2830                 m->disabled = 1;
2831         }
2832     else
2833         for (i = 0; i < input_files[file_idx].ctx->nb_streams; i++) {
2834             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2835                         *p == ':' ? p + 1 : p) <= 0)
2836                 continue;
2837             stream_maps = grow_array(stream_maps, sizeof(*stream_maps), &nb_stream_maps, nb_stream_maps + 1);
2838             m = &stream_maps[nb_stream_maps - 1];
2839
2840             m->file_index   = file_idx;
2841             m->stream_index = i;
2842
2843             if (sync_file_idx >= 0) {
2844                 m->sync_file_index   = sync_file_idx;
2845                 m->sync_stream_index = sync_stream_idx;
2846             } else {
2847                 m->sync_file_index   = file_idx;
2848                 m->sync_stream_index = i;
2849             }
2850         }
2851
2852     if (!m) {
2853         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2854         exit_program(1);
2855     }
2856
2857     av_freep(&map);
2858     return 0;
2859 }
2860
2861 static void parse_meta_type(char *arg, char *type, int *index)
2862 {
2863     if (*arg == ':') {
2864         *type = *(++arg);
2865         switch (*arg) {
2866         case 'g':
2867             break;
2868         case 's':
2869         case 'c':
2870         case 'p':
2871             if (*(++arg) == ':')
2872                 *index = strtol(++arg, NULL, 0);
2873             break;
2874         default:
2875             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2876             exit_program(1);
2877         }
2878     } else
2879         *type = 'g';
2880 }
2881
2882 static int opt_map_metadata(const char *opt, const char *arg)
2883 {
2884     MetadataMap *m, *m1;
2885     char *p;
2886
2887     meta_data_maps = grow_array(meta_data_maps, sizeof(*meta_data_maps),
2888                                 &nb_meta_data_maps, nb_meta_data_maps + 1);
2889
2890     m = &meta_data_maps[nb_meta_data_maps - 1][1];
2891     m->file = strtol(arg, &p, 0);
2892     parse_meta_type(p, &m->type, &m->index);
2893
2894     m1 = &meta_data_maps[nb_meta_data_maps - 1][0];
2895     if (p = strchr(opt, ':'))
2896         parse_meta_type(p, &m1->type, &m1->index);
2897     else
2898         m1->type = 'g';
2899
2900     if (m->type == 'g' || m1->type == 'g')
2901         metadata_global_autocopy = 0;
2902     if (m->type == 's' || m1->type == 's')
2903         metadata_streams_autocopy = 0;
2904     if (m->type == 'c' || m1->type == 'c')
2905         metadata_chapters_autocopy = 0;
2906
2907     return 0;
2908 }
2909
2910 static int opt_input_ts_scale(const char *opt, const char *arg)
2911 {
2912     unsigned int stream;
2913     double scale;
2914     char *p;
2915
2916     stream = strtol(arg, &p, 0);
2917     if (*p)
2918         p++;
2919     scale= strtod(p, &p);
2920
2921     if(stream >= MAX_STREAMS)
2922         exit_program(1);
2923
2924     ts_scale = grow_array(ts_scale, sizeof(*ts_scale), &nb_ts_scale, stream + 1);
2925     ts_scale[stream] = scale;
2926     return 0;
2927 }
2928
2929 static int opt_recording_time(const char *opt, const char *arg)
2930 {
2931     recording_time = parse_time_or_die(opt, arg, 1);
2932     return 0;
2933 }
2934
2935 static int opt_start_time(const char *opt, const char *arg)
2936 {
2937     start_time = parse_time_or_die(opt, arg, 1);
2938     return 0;
2939 }
2940
2941 static int opt_input_ts_offset(const char *opt, const char *arg)
2942 {
2943     input_ts_offset = parse_time_or_die(opt, arg, 1);
2944     return 0;
2945 }
2946
2947 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2948 {
2949     const char *codec_string = encoder ? "encoder" : "decoder";
2950     AVCodec *codec;
2951
2952     if(!name)
2953         return CODEC_ID_NONE;
2954     codec = encoder ?
2955         avcodec_find_encoder_by_name(name) :
2956         avcodec_find_decoder_by_name(name);
2957     if(!codec) {
2958         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2959         exit_program(1);
2960     }
2961     if(codec->type != type) {
2962         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2963         exit_program(1);
2964     }
2965     return codec->id;
2966 }
2967
2968 static AVCodec *choose_codec(AVFormatContext *s, AVStream *st, enum AVMediaType type, AVDictionary *codec_names)
2969 {
2970     AVDictionaryEntry *e = NULL;
2971     char *codec_name = NULL;
2972     int ret;
2973
2974     while (e = av_dict_get(codec_names, "", e, AV_DICT_IGNORE_SUFFIX)) {
2975         char *p = strchr(e->key, ':');
2976
2977         if ((ret = check_stream_specifier(s, st, p ? p + 1 : "")) > 0)
2978             codec_name = e->value;
2979         else if (ret < 0)
2980             exit_program(1);
2981     }
2982
2983     if (!codec_name) {
2984         if (s->oformat) {
2985             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2986             return avcodec_find_encoder(st->codec->codec_id);
2987         }
2988     } else if (!strcmp(codec_name, "copy"))
2989         st->stream_copy = 1;
2990     else {
2991         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2992         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2993                             avcodec_find_decoder_by_name(codec_name);
2994     }
2995
2996     return NULL;
2997 }
2998
2999 static int opt_input_file(const char *opt, const char *filename)
3000 {
3001     AVFormatContext *ic;
3002     AVInputFormat *file_iformat = NULL;
3003     int err, i, ret, rfps, rfps_base;
3004     int64_t timestamp;
3005     uint8_t buf[128];
3006     AVDictionary **opts;
3007     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3008
3009     if (last_asked_format) {
3010         if (!(file_iformat = av_find_input_format(last_asked_format))) {
3011             fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3012             exit_program(1);
3013         }
3014         last_asked_format = NULL;
3015     }
3016
3017     if (!strcmp(filename, "-"))
3018         filename = "pipe:";
3019
3020     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3021                     !strcmp(filename, "/dev/stdin");
3022
3023     /* get default parameters from command line */
3024     ic = avformat_alloc_context();
3025     if (!ic) {
3026         print_error(filename, AVERROR(ENOMEM));
3027         exit_program(1);
3028     }
3029     if (audio_sample_rate) {
3030         snprintf(buf, sizeof(buf), "%d", audio_sample_rate);
3031         av_dict_set(&format_opts, "sample_rate", buf, 0);
3032     }
3033     if (audio_channels) {
3034         snprintf(buf, sizeof(buf), "%d", audio_channels);
3035         av_dict_set(&format_opts, "channels", buf, 0);
3036     }
3037     if (frame_rate.num) {
3038         snprintf(buf, sizeof(buf), "%d/%d", frame_rate.num, frame_rate.den);
3039         av_dict_set(&format_opts, "framerate", buf, 0);
3040     }
3041     if (frame_width && frame_height) {
3042         snprintf(buf, sizeof(buf), "%dx%d", frame_width, frame_height);
3043         av_dict_set(&format_opts, "video_size", buf, 0);
3044     }
3045     if (frame_pix_fmt != PIX_FMT_NONE)
3046         av_dict_set(&format_opts, "pixel_format", av_get_pix_fmt_name(frame_pix_fmt), 0);
3047
3048     ic->flags |= AVFMT_FLAG_NONBLOCK;
3049
3050     /* open the input file with generic libav function */
3051     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3052     if (err < 0) {
3053         print_error(filename, err);
3054         exit_program(1);
3055     }
3056     assert_avoptions(format_opts);
3057
3058     if(opt_programid) {
3059         int i, j;
3060         int found=0;
3061         for(i=0; i<ic->nb_streams; i++){
3062             ic->streams[i]->discard= AVDISCARD_ALL;
3063         }
3064         for(i=0; i<ic->nb_programs; i++){
3065             AVProgram *p= ic->programs[i];
3066             if(p->id != opt_programid){
3067                 p->discard = AVDISCARD_ALL;
3068             }else{
3069                 found=1;
3070                 for(j=0; j<p->nb_stream_indexes; j++){
3071                     ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3072                 }
3073             }
3074         }
3075         if(!found){
3076             fprintf(stderr, "Specified program id not found\n");
3077             exit_program(1);
3078         }
3079         opt_programid=0;
3080     }
3081
3082     /* apply forced codec ids */
3083     for (i = 0; i < ic->nb_streams; i++)
3084         choose_codec(ic, ic->streams[i], ic->streams[i]->codec->codec_type, codec_names);
3085
3086     /* Set AVCodecContext options for avformat_find_stream_info */
3087     opts = setup_find_stream_info_opts(ic, codec_opts);
3088     orig_nb_streams = ic->nb_streams;
3089
3090     /* If not enough info to get the stream parameters, we decode the
3091        first frames to get it. (used in mpeg case for example) */
3092     ret = avformat_find_stream_info(ic, opts);
3093     if (ret < 0 && verbose >= 0) {
3094         fprintf(stderr, "%s: could not find codec parameters\n", filename);
3095         av_close_input_file(ic);
3096         exit_program(1);
3097     }
3098
3099     timestamp = start_time;
3100     /* add the stream start time */
3101     if (ic->start_time != AV_NOPTS_VALUE)
3102         timestamp += ic->start_time;
3103
3104     /* if seeking requested, we execute it */
3105     if (start_time != 0) {
3106         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3107         if (ret < 0) {
3108             fprintf(stderr, "%s: could not seek to position %0.3f\n",
3109                     filename, (double)timestamp / AV_TIME_BASE);
3110         }
3111         /* reset seek info */
3112         start_time = 0;
3113     }
3114
3115     /* update the current parameters so that they match the one of the input stream */
3116     for(i=0;i<ic->nb_streams;i++) {
3117         AVStream *st = ic->streams[i];
3118         AVCodecContext *dec = st->codec;
3119         InputStream *ist;
3120
3121         dec->thread_count = thread_count;
3122
3123         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3124         ist = &input_streams[nb_input_streams - 1];
3125         ist->st = st;
3126         ist->file_index = nb_input_files;
3127         ist->discard = 1;
3128         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3129
3130         if (i < nb_ts_scale)
3131             ist->ts_scale = ts_scale[i];
3132
3133         ist->dec = choose_codec(ic, st, dec->codec_type, codec_names);
3134
3135         switch (dec->codec_type) {
3136         case AVMEDIA_TYPE_AUDIO:
3137             if(!ist->dec)
3138                 ist->dec = avcodec_find_decoder(dec->codec_id);
3139             if(audio_disable)
3140                 st->discard= AVDISCARD_ALL;
3141             break;
3142         case AVMEDIA_TYPE_VIDEO:
3143             if(!ist->dec)
3144                 ist->dec = avcodec_find_decoder(dec->codec_id);
3145             rfps      = ic->streams[i]->r_frame_rate.num;
3146             rfps_base = ic->streams[i]->r_frame_rate.den;
3147             if (dec->lowres) {
3148                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3149             }
3150             if(me_threshold)
3151                 dec->debug |= FF_DEBUG_MV;
3152
3153             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3154
3155                 if (verbose >= 0)
3156                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3157                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3158
3159                     (float)rfps / rfps_base, rfps, rfps_base);
3160             }
3161
3162             if(video_disable)
3163                 st->discard= AVDISCARD_ALL;
3164             else if(video_discard)
3165                 st->discard= video_discard;
3166             break;
3167         case AVMEDIA_TYPE_DATA:
3168             break;
3169         case AVMEDIA_TYPE_SUBTITLE:
3170             if(!ist->dec)
3171                 ist->dec = avcodec_find_decoder(dec->codec_id);
3172             if(subtitle_disable)
3173                 st->discard = AVDISCARD_ALL;
3174             break;
3175         case AVMEDIA_TYPE_ATTACHMENT:
3176         case AVMEDIA_TYPE_UNKNOWN:
3177             break;
3178         default:
3179             abort();
3180         }
3181     }
3182
3183     /* dump the file content */
3184     if (verbose >= 0)
3185         av_dump_format(ic, nb_input_files, filename, 0);
3186
3187     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3188     input_files[nb_input_files - 1].ctx        = ic;
3189     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3190     input_files[nb_input_files - 1].ts_offset  = input_ts_offset - (copy_ts ? 0 : timestamp);
3191     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3192
3193     top_field_first = -1;
3194     frame_rate    = (AVRational){0, 0};
3195     frame_pix_fmt = PIX_FMT_NONE;
3196     frame_height = 0;
3197     frame_width  = 0;
3198     audio_sample_rate = 0;
3199     audio_channels    = 0;
3200     audio_sample_fmt  = AV_SAMPLE_FMT_NONE;
3201     av_freep(&ts_scale);
3202     nb_ts_scale = 0;
3203
3204     for (i = 0; i < orig_nb_streams; i++)
3205         av_dict_free(&opts[i]);
3206     av_freep(&opts);
3207     av_dict_free(&codec_names);
3208     uninit_opts();
3209     init_opts();
3210     return 0;
3211 }
3212
3213 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3214                                     AVCodecContext *avctx)
3215 {
3216     char *p;
3217     int n = 1, i;
3218     int64_t t;
3219
3220     for (p = kf; *p; p++)
3221         if (*p == ',')
3222             n++;
3223     ost->forced_kf_count = n;
3224     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3225     if (!ost->forced_kf_pts) {
3226         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3227         exit_program(1);
3228     }
3229     for (i = 0; i < n; i++) {
3230         p = i ? strchr(p, ',') + 1 : kf;
3231         t = parse_time_or_die("force_key_frames", p, 1);
3232         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3233     }
3234 }
3235
3236 static OutputStream *new_output_stream(AVFormatContext *oc, enum AVMediaType type)
3237 {
3238     OutputStream *ost;
3239     AVStream *st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
3240     int idx      = oc->nb_streams - 1;
3241
3242     if (!st) {
3243         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
3244         exit_program(1);
3245     }
3246
3247     output_streams_for_file[nb_output_files] =
3248         grow_array(output_streams_for_file[nb_output_files],
3249                    sizeof(*output_streams_for_file[nb_output_files]),
3250                    &nb_output_streams_for_file[nb_output_files],
3251                    oc->nb_streams);
3252     ost = output_streams_for_file[nb_output_files][idx] =
3253         av_mallocz(sizeof(OutputStream));
3254     if (!ost) {
3255         fprintf(stderr, "Could not alloc output stream\n");
3256         exit_program(1);
3257     }
3258     ost->file_index = nb_output_files;
3259     ost->index = idx;
3260     ost->st    = st;
3261     st->codec->codec_type = type;
3262     ost->enc = choose_codec(oc, st, type, codec_names);
3263     if (ost->enc) {
3264         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3265     }
3266
3267     avcodec_get_context_defaults3(st->codec, ost->enc);
3268     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3269
3270     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
3271     return ost;
3272 }
3273
3274 static OutputStream *new_video_stream(AVFormatContext *oc)
3275 {
3276     AVStream *st;
3277     OutputStream *ost;
3278     AVCodecContext *video_enc;
3279
3280     ost = new_output_stream(oc, AVMEDIA_TYPE_VIDEO);
3281     st  = ost->st;
3282     if (!st->stream_copy) {
3283         ost->frame_aspect_ratio = frame_aspect_ratio;
3284         frame_aspect_ratio = 0;
3285 #if CONFIG_AVFILTER
3286         ost->avfilter = vfilters;
3287         vfilters = NULL;
3288 #endif
3289     }
3290
3291     ost->bitstream_filters = video_bitstream_filters;
3292     video_bitstream_filters= NULL;
3293
3294     st->codec->thread_count= thread_count;
3295
3296     video_enc = st->codec;
3297
3298     if(video_codec_tag)
3299         video_enc->codec_tag= video_codec_tag;
3300
3301     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3302         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3303     }
3304
3305     if (st->stream_copy) {
3306         video_enc->sample_aspect_ratio =
3307         st->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3308     } else {
3309         const char *p;
3310         int i;
3311
3312         if (frame_rate.num)
3313             ost->frame_rate = frame_rate;
3314
3315         video_enc->width = frame_width;
3316         video_enc->height = frame_height;
3317         video_enc->pix_fmt = frame_pix_fmt;
3318         video_enc->bits_per_raw_sample = frame_bits_per_raw_sample;
3319         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3320
3321         if (intra_only)
3322             video_enc->gop_size = 0;
3323         if (video_qscale || same_quant) {
3324             video_enc->flags |= CODEC_FLAG_QSCALE;
3325             video_enc->global_quality = FF_QP2LAMBDA * video_qscale;
3326         }
3327
3328         if(intra_matrix)
3329             video_enc->intra_matrix = intra_matrix;
3330         if(inter_matrix)
3331             video_enc->inter_matrix = inter_matrix;
3332
3333         p= video_rc_override_string;
3334         for(i=0; p; i++){
3335             int start, end, q;
3336             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3337             if(e!=3){
3338                 fprintf(stderr, "error parsing rc_override\n");
3339                 exit_program(1);
3340             }
3341             video_enc->rc_override=
3342                 av_realloc(video_enc->rc_override,
3343                            sizeof(RcOverride)*(i+1));
3344             video_enc->rc_override[i].start_frame= start;
3345             video_enc->rc_override[i].end_frame  = end;
3346             if(q>0){
3347                 video_enc->rc_override[i].qscale= q;
3348                 video_enc->rc_override[i].quality_factor= 1.0;
3349             }
3350             else{
3351                 video_enc->rc_override[i].qscale= 0;
3352                 video_enc->rc_override[i].quality_factor= -q/100.0;
3353             }
3354             p= strchr(p, '/');
3355             if(p) p++;
3356         }
3357         video_enc->rc_override_count=i;
3358         if (!video_enc->rc_initial_buffer_occupancy)
3359             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3360         video_enc->me_threshold= me_threshold;
3361         video_enc->intra_dc_precision= intra_dc_precision - 8;
3362
3363         if (do_psnr)
3364             video_enc->flags|= CODEC_FLAG_PSNR;
3365
3366         /* two pass mode */
3367         if (do_pass) {
3368             if (do_pass == 1) {
3369                 video_enc->flags |= CODEC_FLAG_PASS1;
3370             } else {
3371                 video_enc->flags |= CODEC_FLAG_PASS2;
3372             }
3373         }
3374
3375         if (forced_key_frames)
3376             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3377     }
3378     if (video_language) {
3379         av_dict_set(&st->metadata, "language", video_language, 0);
3380         av_freep(&video_language);
3381     }
3382
3383     /* reset some key parameters */
3384     video_disable = 0;
3385     av_freep(&forced_key_frames);
3386     frame_pix_fmt = PIX_FMT_NONE;
3387     return ost;
3388 }
3389
3390 static OutputStream *new_audio_stream(AVFormatContext *oc)
3391 {
3392     AVStream *st;
3393     OutputStream *ost;
3394     AVCodecContext *audio_enc;
3395
3396     ost = new_output_stream(oc, AVMEDIA_TYPE_AUDIO);
3397     st  = ost->st;
3398
3399     ost->bitstream_filters = audio_bitstream_filters;
3400     audio_bitstream_filters= NULL;
3401
3402     st->codec->thread_count= thread_count;
3403
3404     audio_enc = st->codec;
3405     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3406
3407     if(audio_codec_tag)
3408         audio_enc->codec_tag= audio_codec_tag;
3409
3410     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3411         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3412     }
3413     if (!st->stream_copy) {
3414         if (audio_qscale > QSCALE_NONE) {
3415             audio_enc->flags |= CODEC_FLAG_QSCALE;
3416             audio_enc->global_quality = FF_QP2LAMBDA * audio_qscale;
3417         }
3418         if (audio_channels)
3419             audio_enc->channels = audio_channels;
3420         if (audio_sample_fmt != AV_SAMPLE_FMT_NONE)
3421             audio_enc->sample_fmt = audio_sample_fmt;
3422         if (audio_sample_rate)
3423             audio_enc->sample_rate = audio_sample_rate;
3424     }
3425     if (audio_language) {
3426         av_dict_set(&st->metadata, "language", audio_language, 0);
3427         av_freep(&audio_language);
3428     }
3429
3430     /* reset some key parameters */
3431     audio_disable = 0;
3432
3433     return ost;
3434 }
3435
3436 static OutputStream *new_data_stream(AVFormatContext *oc)
3437 {
3438     AVStream *st;
3439     OutputStream *ost;
3440     AVCodecContext *data_enc;
3441
3442     ost = new_output_stream(oc, AVMEDIA_TYPE_DATA);
3443     st  = ost->st;
3444     data_enc = st->codec;
3445     if (!st->stream_copy) {
3446         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3447         exit_program(1);
3448     }
3449
3450     if (data_codec_tag)
3451         data_enc->codec_tag= data_codec_tag;
3452
3453     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3454         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3455     }
3456
3457     data_disable = 0;
3458     return ost;
3459 }
3460
3461 static OutputStream *new_subtitle_stream(AVFormatContext *oc)
3462 {
3463     AVStream *st;
3464     OutputStream *ost;
3465     AVCodecContext *subtitle_enc;
3466
3467     ost = new_output_stream(oc, AVMEDIA_TYPE_SUBTITLE);
3468     st  = ost->st;
3469     subtitle_enc = st->codec;
3470
3471     ost->bitstream_filters = subtitle_bitstream_filters;
3472     subtitle_bitstream_filters= NULL;
3473
3474     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3475
3476     if(subtitle_codec_tag)
3477         subtitle_enc->codec_tag= subtitle_codec_tag;
3478
3479     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3480         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3481     }
3482
3483     if (subtitle_language) {
3484         av_dict_set(&st->metadata, "language", subtitle_language, 0);
3485         av_freep(&subtitle_language);
3486     }
3487
3488     subtitle_disable = 0;
3489     return ost;
3490 }
3491
3492 /* arg format is "output-stream-index:streamid-value". */
3493 static int opt_streamid(const char *opt, const char *arg)
3494 {
3495     int idx;
3496     char *p;
3497     char idx_str[16];
3498
3499     av_strlcpy(idx_str, arg, sizeof(idx_str));
3500     p = strchr(idx_str, ':');
3501     if (!p) {
3502         fprintf(stderr,
3503                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3504                 arg, opt);
3505         exit_program(1);
3506     }
3507     *p++ = '\0';
3508     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, MAX_STREAMS-1);
3509     streamid_map = grow_array(streamid_map, sizeof(*streamid_map), &nb_streamid_map, idx+1);
3510     streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3511     return 0;
3512 }
3513
3514 static int copy_chapters(int infile, int outfile)
3515 {
3516     AVFormatContext *is = input_files[infile].ctx;
3517     AVFormatContext *os = output_files[outfile];
3518     int i;
3519
3520     for (i = 0; i < is->nb_chapters; i++) {
3521         AVChapter *in_ch = is->chapters[i], *out_ch;
3522         int64_t ts_off   = av_rescale_q(start_time - input_files[infile].ts_offset,
3523                                       AV_TIME_BASE_Q, in_ch->time_base);
3524         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
3525                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3526
3527
3528         if (in_ch->end < ts_off)
3529             continue;
3530         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3531             break;
3532
3533         out_ch = av_mallocz(sizeof(AVChapter));
3534         if (!out_ch)
3535             return AVERROR(ENOMEM);
3536
3537         out_ch->id        = in_ch->id;
3538         out_ch->time_base = in_ch->time_base;
3539         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3540         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3541
3542         if (metadata_chapters_autocopy)
3543             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3544
3545         os->nb_chapters++;
3546         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3547         if (!os->chapters)
3548             return AVERROR(ENOMEM);
3549         os->chapters[os->nb_chapters - 1] = out_ch;
3550     }
3551     return 0;
3552 }
3553
3554 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
3555 {
3556     int i, err;
3557     AVFormatContext *ic = NULL;
3558
3559     err = avformat_open_input(&ic, filename, NULL, NULL);
3560     if (err < 0)
3561         return err;
3562     /* copy stream format */
3563     for(i=0;i<ic->nb_streams;i++) {
3564         AVStream *st;
3565         OutputStream *ost;
3566         AVCodec *codec;
3567
3568         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3569         ost   = new_output_stream(s, codec->type);
3570         st    = ost->st;
3571
3572         // FIXME: a more elegant solution is needed
3573         memcpy(st, ic->streams[i], sizeof(AVStream));
3574         st->info = av_malloc(sizeof(*st->info));
3575         memcpy(st->info, ic->streams[i]->info, sizeof(*st->info));
3576         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3577
3578         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3579             choose_sample_fmt(st, codec);
3580         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3581             choose_pixel_fmt(st, codec);
3582     }
3583
3584     av_close_input_file(ic);
3585     return 0;
3586 }
3587
3588 static int opt_output_file(const char *opt, const char *filename)
3589 {
3590     AVFormatContext *oc;
3591     int i, err;
3592     AVOutputFormat *file_oformat;
3593     OutputStream *ost;
3594     InputStream  *ist;
3595
3596     if(nb_output_files >= FF_ARRAY_ELEMS(output_files)){
3597         fprintf(stderr, "Too many output files\n");
3598         exit_program(1);
3599     }
3600
3601     if (!strcmp(filename, "-"))
3602         filename = "pipe:";
3603
3604     err = avformat_alloc_output_context2(&oc, NULL, last_asked_format, filename);
3605     last_asked_format = NULL;
3606     if (!oc) {
3607         print_error(filename, err);
3608         exit_program(1);
3609     }
3610
3611     file_oformat= oc->oformat;
3612
3613     if (!strcmp(file_oformat->name, "ffm") &&
3614         av_strstart(filename, "http:", NULL)) {
3615         /* special case for files sent to ffserver: we get the stream
3616            parameters from ffserver */
3617         int err = read_ffserver_streams(oc, filename);
3618         if (err < 0) {
3619             print_error(filename, err);
3620             exit_program(1);
3621         }
3622     } else if (!nb_stream_maps) {
3623         /* pick the "best" stream of each type */
3624 #define NEW_STREAM(type, index)\
3625         if (index >= 0) {\
3626             ost = new_ ## type ## _stream(oc);\
3627             ost->source_index = index;\
3628             ost->sync_ist     = &input_streams[index];\
3629             input_streams[index].discard = 0;\
3630         }
3631
3632         /* video: highest resolution */
3633         if (!video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3634             int area = 0, idx = -1;
3635             for (i = 0; i < nb_input_streams; i++) {
3636                 ist = &input_streams[i];
3637                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3638                     ist->st->codec->width * ist->st->codec->height > area) {
3639                     area = ist->st->codec->width * ist->st->codec->height;
3640                     idx = i;
3641                 }
3642             }
3643             NEW_STREAM(video, idx);
3644         }
3645
3646         /* audio: most channels */
3647         if (!audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3648             int channels = 0, idx = -1;
3649             for (i = 0; i < nb_input_streams; i++) {
3650                 ist = &input_streams[i];
3651                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3652                     ist->st->codec->channels > channels) {
3653                     channels = ist->st->codec->channels;
3654                     idx = i;
3655                 }
3656             }