avtools: parse loglevel before all the other options.
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/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 #if CONFIG_AVFILTER
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.h"
52 # include "libavfilter/vsrc_buffer.h"
53 #endif
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/types.h>
57 #include <sys/time.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #include <time.h>
72
73 #include "cmdutils.h"
74
75 #include "libavutil/avassert.h"
76
77 const char program_name[] = "avconv";
78 const int program_birth_year = 2000;
79
80 /* select an input stream for an output stream */
81 typedef struct StreamMap {
82     int disabled;           /** 1 is this mapping is disabled by a negative map */
83     int file_index;
84     int stream_index;
85     int sync_file_index;
86     int sync_stream_index;
87 } StreamMap;
88
89 /**
90  * select an input file for an output file
91  */
92 typedef struct MetadataMap {
93     int  file;      ///< file index
94     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
95     int  index;     ///< stream/chapter/program number
96 } MetadataMap;
97
98 static const OptionDef options[];
99
100 static int video_discard = 0;
101 static int same_quant = 0;
102 static int do_deinterlace = 0;
103 static int intra_dc_precision = 8;
104 static int qp_hist = 0;
105
106 static int file_overwrite = 0;
107 static int do_benchmark = 0;
108 static int do_hex_dump = 0;
109 static int do_pkt_dump = 0;
110 static int do_pass = 0;
111 static char *pass_logfilename_prefix = NULL;
112 static int video_sync_method= -1;
113 static int audio_sync_method= 0;
114 static float audio_drift_threshold= 0.1;
115 static int copy_ts= 0;
116 static int copy_tb;
117 static int opt_shortest = 0;
118 static char *vstats_filename;
119 static FILE *vstats_file;
120 static int copy_initial_nonkeyframes = 0;
121
122 static int audio_volume = 256;
123
124 static int exit_on_error = 0;
125 static int using_stdin = 0;
126 static int verbose = 1;
127 static int64_t video_size = 0;
128 static int64_t audio_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int input_sync;
133
134 static float dts_delta_threshold = 10;
135
136 static uint8_t *audio_buf;
137 static uint8_t *audio_out;
138 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
139
140 static short *samples;
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
143
144 typedef struct InputStream {
145     int file_index;
146     AVStream *st;
147     int discard;             /* true if stream data should be discarded */
148     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
149     AVCodec *dec;
150
151     int64_t       start;     /* time when read started */
152     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
153                                 is not defined */
154     int64_t       pts;       /* current pts */
155     PtsCorrectionContext pts_ctx;
156     double ts_scale;
157     int is_start;            /* is 1 at the start and after a discontinuity */
158     int showed_multi_packet_warning;
159     AVDictionary *opts;
160 } InputStream;
161
162 typedef struct InputFile {
163     AVFormatContext *ctx;
164     int eof_reached;      /* true if eof reached */
165     int ist_index;        /* index of first stream in ist_table */
166     int buffer_size;      /* current total buffer size */
167     int64_t ts_offset;
168     int nb_streams;       /* number of stream that avconv is aware of; may be different
169                              from ctx.nb_streams if new streams appear during av_read_frame() */
170     int rate_emu;
171 } InputFile;
172
173 typedef struct OutputStream {
174     int file_index;          /* file index */
175     int index;               /* stream index in the output file */
176     int source_index;        /* InputStream index */
177     AVStream *st;            /* stream in the output file */
178     int encoding_needed;     /* true if encoding needed for this stream */
179     int frame_number;
180     /* input pts and corresponding output pts
181        for A/V sync */
182     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
183     struct InputStream *sync_ist; /* input stream to sync against */
184     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
185     AVBitStreamFilterContext *bitstream_filters;
186     AVCodec *enc;
187     int64_t max_frames;
188
189     /* video only */
190     int video_resample;
191     AVFrame pict_tmp;      /* temporary image for resampling */
192     struct SwsContext *img_resample_ctx; /* for image resampling */
193     int resample_height;
194     int resample_width;
195     int resample_pix_fmt;
196     AVRational frame_rate;
197     int force_fps;
198     int top_field_first;
199
200     float frame_aspect_ratio;
201
202     /* forced key frames */
203     int64_t *forced_kf_pts;
204     int forced_kf_count;
205     int forced_kf_index;
206
207     /* audio only */
208     int audio_resample;
209     ReSampleContext *resample; /* for audio resampling */
210     int resample_sample_fmt;
211     int resample_channels;
212     int resample_sample_rate;
213     int reformat_pair;
214     AVAudioConvert *reformat_ctx;
215     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
216     FILE *logfile;
217
218 #if CONFIG_AVFILTER
219     AVFilterContext *output_video_filter;
220     AVFilterContext *input_video_filter;
221     AVFilterBufferRef *picref;
222     char *avfilter;
223     AVFilterGraph *graph;
224 #endif
225
226    int sws_flags;
227    AVDictionary *opts;
228    int is_past_recording_time;
229 } OutputStream;
230
231
232 typedef struct OutputFile {
233     AVFormatContext *ctx;
234     AVDictionary *opts;
235     int ost_index;       /* index of the first stream in output_streams */
236     int64_t recording_time; /* desired length of the resulting file in microseconds */
237     int64_t start_time;     /* start time in microseconds */
238     uint64_t limit_filesize;
239 } OutputFile;
240
241 static InputStream *input_streams = NULL;
242 static int         nb_input_streams = 0;
243 static InputFile   *input_files   = NULL;
244 static int         nb_input_files   = 0;
245
246 static OutputStream *output_streams = NULL;
247 static int        nb_output_streams = 0;
248 static OutputFile   *output_files   = NULL;
249 static int        nb_output_files   = 0;
250
251 typedef struct OptionsContext {
252     /* input/output options */
253     int64_t start_time;
254     const char *format;
255
256     SpecifierOpt *codec_names;
257     int        nb_codec_names;
258     SpecifierOpt *audio_channels;
259     int        nb_audio_channels;
260     SpecifierOpt *audio_sample_rate;
261     int        nb_audio_sample_rate;
262     SpecifierOpt *frame_rates;
263     int        nb_frame_rates;
264     SpecifierOpt *frame_sizes;
265     int        nb_frame_sizes;
266     SpecifierOpt *frame_pix_fmts;
267     int        nb_frame_pix_fmts;
268
269     /* input options */
270     int64_t input_ts_offset;
271     int rate_emu;
272
273     SpecifierOpt *ts_scale;
274     int        nb_ts_scale;
275
276     /* output options */
277     StreamMap *stream_maps;
278     int     nb_stream_maps;
279     /* first item specifies output metadata, second is input */
280     MetadataMap (*meta_data_maps)[2];
281     int nb_meta_data_maps;
282     int metadata_global_manual;
283     int metadata_streams_manual;
284     int metadata_chapters_manual;
285
286     int chapters_input_file;
287
288     int64_t recording_time;
289     uint64_t limit_filesize;
290     float mux_preload;
291     float mux_max_delay;
292
293     int video_disable;
294     int audio_disable;
295     int subtitle_disable;
296     int data_disable;
297
298     /* indexed by output file stream index */
299     int   *streamid_map;
300     int nb_streamid_map;
301
302     SpecifierOpt *metadata;
303     int        nb_metadata;
304     SpecifierOpt *max_frames;
305     int        nb_max_frames;
306     SpecifierOpt *bitstream_filters;
307     int        nb_bitstream_filters;
308     SpecifierOpt *codec_tags;
309     int        nb_codec_tags;
310     SpecifierOpt *sample_fmts;
311     int        nb_sample_fmts;
312     SpecifierOpt *qscale;
313     int        nb_qscale;
314     SpecifierOpt *forced_key_frames;
315     int        nb_forced_key_frames;
316     SpecifierOpt *force_fps;
317     int        nb_force_fps;
318     SpecifierOpt *frame_aspect_ratios;
319     int        nb_frame_aspect_ratios;
320     SpecifierOpt *rc_overrides;
321     int        nb_rc_overrides;
322     SpecifierOpt *intra_matrices;
323     int        nb_intra_matrices;
324     SpecifierOpt *inter_matrices;
325     int        nb_inter_matrices;
326     SpecifierOpt *top_field_first;
327     int        nb_top_field_first;
328 #if CONFIG_AVFILTER
329     SpecifierOpt *filters;
330     int        nb_filters;
331 #endif
332 } OptionsContext;
333
334 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
335 {\
336     int i, ret;\
337     for (i = 0; i < o->nb_ ## name; i++) {\
338         char *spec = o->name[i].specifier;\
339         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
340             outvar = o->name[i].u.type;\
341         else if (ret < 0)\
342             exit_program(1);\
343     }\
344 }
345
346 static void reset_options(OptionsContext *o)
347 {
348     const OptionDef *po = options;
349
350     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
351     while (po->name) {
352         void *dst = (uint8_t*)o + po->u.off;
353
354         if (po->flags & OPT_SPEC) {
355             SpecifierOpt **so = dst;
356             int i, *count = (int*)(so + 1);
357             for (i = 0; i < *count; i++) {
358                 av_freep(&(*so)[i].specifier);
359                 if (po->flags & OPT_STRING)
360                     av_freep(&(*so)[i].u.str);
361             }
362             av_freep(so);
363             *count = 0;
364         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
365             av_freep(dst);
366         po++;
367     }
368
369     av_freep(&o->stream_maps);
370     av_freep(&o->meta_data_maps);
371     av_freep(&o->streamid_map);
372
373     memset(o, 0, sizeof(*o));
374
375     o->mux_preload    = 0.5;
376     o->mux_max_delay  = 0.7;
377     o->recording_time = INT64_MAX;
378     o->limit_filesize = UINT64_MAX;
379     o->chapters_input_file = INT_MAX;
380
381     uninit_opts();
382     init_opts();
383 }
384
385 #if CONFIG_AVFILTER
386
387 static int configure_video_filters(InputStream *ist, OutputStream *ost)
388 {
389     AVFilterContext *last_filter, *filter;
390     /** filter graph containing all filters including input & output */
391     AVCodecContext *codec = ost->st->codec;
392     AVCodecContext *icodec = ist->st->codec;
393     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
394     AVRational sample_aspect_ratio;
395     char args[255];
396     int ret;
397
398     ost->graph = avfilter_graph_alloc();
399
400     if (ist->st->sample_aspect_ratio.num){
401         sample_aspect_ratio = ist->st->sample_aspect_ratio;
402     }else
403         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
404
405     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
406              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
407              sample_aspect_ratio.num, sample_aspect_ratio.den);
408
409     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
410                                        "src", args, NULL, ost->graph);
411     if (ret < 0)
412         return ret;
413     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
414                                        "out", NULL, &ffsink_ctx, ost->graph);
415     if (ret < 0)
416         return ret;
417     last_filter = ost->input_video_filter;
418
419     if (codec->width  != icodec->width || codec->height != icodec->height) {
420         snprintf(args, 255, "%d:%d:flags=0x%X",
421                  codec->width,
422                  codec->height,
423                  ost->sws_flags);
424         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
425                                                 NULL, args, NULL, ost->graph)) < 0)
426             return ret;
427         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
428             return ret;
429         last_filter = filter;
430     }
431
432     snprintf(args, sizeof(args), "flags=0x%X", ost->sws_flags);
433     ost->graph->scale_sws_opts = av_strdup(args);
434
435     if (ost->avfilter) {
436         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
437         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
438
439         outputs->name    = av_strdup("in");
440         outputs->filter_ctx = last_filter;
441         outputs->pad_idx = 0;
442         outputs->next    = NULL;
443
444         inputs->name    = av_strdup("out");
445         inputs->filter_ctx = ost->output_video_filter;
446         inputs->pad_idx = 0;
447         inputs->next    = NULL;
448
449         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
450             return ret;
451         av_freep(&ost->avfilter);
452     } else {
453         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
454             return ret;
455     }
456
457     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
458         return ret;
459
460     codec->width  = ost->output_video_filter->inputs[0]->w;
461     codec->height = ost->output_video_filter->inputs[0]->h;
462     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
463         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
464         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
465         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
466
467     return 0;
468 }
469 #endif /* CONFIG_AVFILTER */
470
471 static void term_exit(void)
472 {
473     av_log(NULL, AV_LOG_QUIET, "");
474 }
475
476 static volatile int received_sigterm = 0;
477 static volatile int received_nb_signals = 0;
478
479 static void
480 sigterm_handler(int sig)
481 {
482     received_sigterm = sig;
483     received_nb_signals++;
484     term_exit();
485 }
486
487 static void term_init(void)
488 {
489     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
490     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
491 #ifdef SIGXCPU
492     signal(SIGXCPU, sigterm_handler);
493 #endif
494 }
495
496 static int decode_interrupt_cb(void)
497 {
498     return received_nb_signals > 1;
499 }
500
501 void exit_program(int ret)
502 {
503     int i;
504
505     /* close files */
506     for(i=0;i<nb_output_files;i++) {
507         AVFormatContext *s = output_files[i].ctx;
508         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
509             avio_close(s->pb);
510         avformat_free_context(s);
511         av_dict_free(&output_files[i].opts);
512     }
513     for(i=0;i<nb_input_files;i++) {
514         av_close_input_file(input_files[i].ctx);
515     }
516     for (i = 0; i < nb_input_streams; i++)
517         av_dict_free(&input_streams[i].opts);
518
519     if (vstats_file)
520         fclose(vstats_file);
521     av_free(vstats_filename);
522
523     av_freep(&input_streams);
524     av_freep(&input_files);
525     av_freep(&output_streams);
526     av_freep(&output_files);
527
528     uninit_opts();
529     av_free(audio_buf);
530     av_free(audio_out);
531     allocated_audio_buf_size= allocated_audio_out_size= 0;
532     av_free(samples);
533
534 #if CONFIG_AVFILTER
535     avfilter_uninit();
536 #endif
537
538     if (received_sigterm) {
539         fprintf(stderr,
540             "Received signal %d: terminating.\n",
541             (int) received_sigterm);
542         exit (255);
543     }
544
545     exit(ret); /* not all OS-es handle main() return value */
546 }
547
548 static void assert_avoptions(AVDictionary *m)
549 {
550     AVDictionaryEntry *t;
551     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
552         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
553         exit_program(1);
554     }
555 }
556
557 static void assert_codec_experimental(AVCodecContext *c, int encoder)
558 {
559     const char *codec_string = encoder ? "encoder" : "decoder";
560     AVCodec *codec;
561     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
562         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
563         av_log(NULL, AV_LOG_ERROR, "%s '%s' is experimental and might produce bad "
564                 "results.\nAdd '-strict experimental' if you want to use it.\n",
565                 codec_string, c->codec->name);
566         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
567         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
568             av_log(NULL, AV_LOG_ERROR, "Or use the non experimental %s '%s'.\n",
569                    codec_string, codec->name);
570         exit_program(1);
571     }
572 }
573
574 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
575 {
576     if(codec && codec->sample_fmts){
577         const enum AVSampleFormat *p= codec->sample_fmts;
578         for(; *p!=-1; p++){
579             if(*p == st->codec->sample_fmt)
580                 break;
581         }
582         if (*p == -1) {
583             av_log(NULL, AV_LOG_WARNING,
584                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
585                    av_get_sample_fmt_name(st->codec->sample_fmt),
586                    codec->name,
587                    av_get_sample_fmt_name(codec->sample_fmts[0]));
588             st->codec->sample_fmt = codec->sample_fmts[0];
589         }
590     }
591 }
592
593 /**
594  * Update the requested input sample format based on the output sample format.
595  * This is currently only used to request float output from decoders which
596  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
597  * Ideally this will be removed in the future when decoders do not do format
598  * conversion and only output in their native format.
599  */
600 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
601                               AVCodecContext *enc)
602 {
603     /* if sample formats match or a decoder sample format has already been
604        requested, just return */
605     if (enc->sample_fmt == dec->sample_fmt ||
606         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
607         return;
608
609     /* if decoder supports more than one output format */
610     if (dec_codec && dec_codec->sample_fmts &&
611         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
612         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
613         const enum AVSampleFormat *p;
614         int min_dec = -1, min_inc = -1;
615
616         /* find a matching sample format in the encoder */
617         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
618             if (*p == enc->sample_fmt) {
619                 dec->request_sample_fmt = *p;
620                 return;
621             } else if (*p > enc->sample_fmt) {
622                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
623             } else
624                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
625         }
626
627         /* if none match, provide the one that matches quality closest */
628         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
629                                   enc->sample_fmt - min_dec;
630     }
631 }
632
633 static void choose_sample_rate(AVStream *st, AVCodec *codec)
634 {
635     if(codec && codec->supported_samplerates){
636         const int *p= codec->supported_samplerates;
637         int best=0;
638         int best_dist=INT_MAX;
639         for(; *p; p++){
640             int dist= abs(st->codec->sample_rate - *p);
641             if(dist < best_dist){
642                 best_dist= dist;
643                 best= *p;
644             }
645         }
646         if(best_dist){
647             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
648         }
649         st->codec->sample_rate= best;
650     }
651 }
652
653 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
654 {
655     if(codec && codec->pix_fmts){
656         const enum PixelFormat *p= codec->pix_fmts;
657         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
658             if(st->codec->codec_id==CODEC_ID_MJPEG){
659                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
660             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
661                 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};
662             }
663         }
664         for(; *p!=-1; p++){
665             if(*p == st->codec->pix_fmt)
666                 break;
667         }
668         if (*p == -1) {
669             if(st->codec->pix_fmt != PIX_FMT_NONE)
670                 av_log(NULL, AV_LOG_WARNING,
671                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
672                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
673                         codec->name,
674                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
675             st->codec->pix_fmt = codec->pix_fmts[0];
676         }
677     }
678 }
679
680 static double
681 get_sync_ipts(const OutputStream *ost)
682 {
683     const InputStream *ist = ost->sync_ist;
684     OutputFile *of = &output_files[ost->file_index];
685     return (double)(ist->pts - of->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 static void do_audio_out(AVFormatContext *s,
721                          OutputStream *ost,
722                          InputStream *ist,
723                          unsigned char *buf, int size)
724 {
725     uint8_t *buftmp;
726     int64_t audio_out_size, audio_buf_size;
727     int64_t allocated_for_size= size;
728
729     int size_out, frame_bytes, ret, resample_changed;
730     AVCodecContext *enc= ost->st->codec;
731     AVCodecContext *dec= ist->st->codec;
732     int osize = av_get_bytes_per_sample(enc->sample_fmt);
733     int isize = av_get_bytes_per_sample(dec->sample_fmt);
734     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
735
736 need_realloc:
737     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
738     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
739     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
740     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
741     audio_buf_size*= osize*enc->channels;
742
743     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
744     if(coded_bps > 8*osize)
745         audio_out_size= audio_out_size * coded_bps / (8*osize);
746     audio_out_size += FF_MIN_BUFFER_SIZE;
747
748     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
749         fprintf(stderr, "Buffer sizes too large\n");
750         exit_program(1);
751     }
752
753     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
754     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
755     if (!audio_buf || !audio_out){
756         fprintf(stderr, "Out of memory in do_audio_out\n");
757         exit_program(1);
758     }
759
760     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
761         ost->audio_resample = 1;
762
763     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
764                        ost->resample_channels    != dec->channels   ||
765                        ost->resample_sample_rate != dec->sample_rate;
766
767     if ((ost->audio_resample && !ost->resample) || resample_changed) {
768         if (resample_changed) {
769             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",
770                    ist->file_index, ist->st->index,
771                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
772                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
773             ost->resample_sample_fmt  = dec->sample_fmt;
774             ost->resample_channels    = dec->channels;
775             ost->resample_sample_rate = dec->sample_rate;
776             if (ost->resample)
777                 audio_resample_close(ost->resample);
778         }
779         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
780         if (audio_sync_method <= 1 &&
781             ost->resample_sample_fmt  == enc->sample_fmt &&
782             ost->resample_channels    == enc->channels   &&
783             ost->resample_sample_rate == enc->sample_rate) {
784             ost->resample = NULL;
785             ost->audio_resample = 0;
786         } else if (ost->audio_resample) {
787             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
788                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
789             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
790                                                    enc->sample_rate, dec->sample_rate,
791                                                    enc->sample_fmt,  dec->sample_fmt,
792                                                    16, 10, 0, 0.8);
793             if (!ost->resample) {
794                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
795                         dec->channels, dec->sample_rate,
796                         enc->channels, enc->sample_rate);
797                 exit_program(1);
798             }
799         }
800     }
801
802 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
803     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
804         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
805         if (ost->reformat_ctx)
806             av_audio_convert_free(ost->reformat_ctx);
807         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
808                                                    dec->sample_fmt, 1, NULL, 0);
809         if (!ost->reformat_ctx) {
810             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
811                 av_get_sample_fmt_name(dec->sample_fmt),
812                 av_get_sample_fmt_name(enc->sample_fmt));
813             exit_program(1);
814         }
815         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
816     }
817
818     if(audio_sync_method){
819         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
820                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
821         double idelta= delta*dec->sample_rate / enc->sample_rate;
822         int byte_delta= ((int)idelta)*2*dec->channels;
823
824         //FIXME resample delay
825         if(fabs(delta) > 50){
826             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
827                 if(byte_delta < 0){
828                     byte_delta= FFMAX(byte_delta, -size);
829                     size += byte_delta;
830                     buf  -= byte_delta;
831                     if(verbose > 2)
832                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
833                     if(!size)
834                         return;
835                     ist->is_start=0;
836                 }else{
837                     static uint8_t *input_tmp= NULL;
838                     input_tmp= av_realloc(input_tmp, byte_delta + size);
839
840                     if(byte_delta > allocated_for_size - size){
841                         allocated_for_size= byte_delta + (int64_t)size;
842                         goto need_realloc;
843                     }
844                     ist->is_start=0;
845
846                     memset(input_tmp, 0, byte_delta);
847                     memcpy(input_tmp + byte_delta, buf, size);
848                     buf= input_tmp;
849                     size += byte_delta;
850                     if(verbose > 2)
851                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
852                 }
853             }else if(audio_sync_method>1){
854                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
855                 av_assert0(ost->audio_resample);
856                 if(verbose > 2)
857                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
858 //                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));
859                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
860             }
861         }
862     }else
863         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
864                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
865
866     if (ost->audio_resample) {
867         buftmp = audio_buf;
868         size_out = audio_resample(ost->resample,
869                                   (short *)buftmp, (short *)buf,
870                                   size / (dec->channels * isize));
871         size_out = size_out * enc->channels * osize;
872     } else {
873         buftmp = buf;
874         size_out = size;
875     }
876
877     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
878         const void *ibuf[6]= {buftmp};
879         void *obuf[6]= {audio_buf};
880         int istride[6]= {isize};
881         int ostride[6]= {osize};
882         int len= size_out/istride[0];
883         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
884             printf("av_audio_convert() failed\n");
885             if (exit_on_error)
886                 exit_program(1);
887             return;
888         }
889         buftmp = audio_buf;
890         size_out = len*osize;
891     }
892
893     /* now encode as many frames as possible */
894     if (enc->frame_size > 1) {
895         /* output resampled raw samples */
896         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
897             fprintf(stderr, "av_fifo_realloc2() failed\n");
898             exit_program(1);
899         }
900         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
901
902         frame_bytes = enc->frame_size * osize * enc->channels;
903
904         while (av_fifo_size(ost->fifo) >= frame_bytes) {
905             AVPacket pkt;
906             av_init_packet(&pkt);
907
908             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
909
910             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
911
912             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
913                                        (short *)audio_buf);
914             if (ret < 0) {
915                 fprintf(stderr, "Audio encoding failed\n");
916                 exit_program(1);
917             }
918             audio_size += ret;
919             pkt.stream_index= ost->index;
920             pkt.data= audio_out;
921             pkt.size= ret;
922             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
923                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
924             pkt.flags |= AV_PKT_FLAG_KEY;
925             write_frame(s, &pkt, enc, ost->bitstream_filters);
926
927             ost->sync_opts += enc->frame_size;
928         }
929     } else {
930         AVPacket pkt;
931         av_init_packet(&pkt);
932
933         ost->sync_opts += size_out / (osize * enc->channels);
934
935         /* output a pcm frame */
936         /* determine the size of the coded buffer */
937         size_out /= osize;
938         if (coded_bps)
939             size_out = size_out*coded_bps/8;
940
941         if(size_out > audio_out_size){
942             fprintf(stderr, "Internal error, buffer size too small\n");
943             exit_program(1);
944         }
945
946         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
947         ret = avcodec_encode_audio(enc, audio_out, size_out,
948                                    (short *)buftmp);
949         if (ret < 0) {
950             fprintf(stderr, "Audio encoding failed\n");
951             exit_program(1);
952         }
953         audio_size += ret;
954         pkt.stream_index= ost->index;
955         pkt.data= audio_out;
956         pkt.size= ret;
957         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
958             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
959         pkt.flags |= AV_PKT_FLAG_KEY;
960         write_frame(s, &pkt, enc, ost->bitstream_filters);
961     }
962 }
963
964 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
965 {
966     AVCodecContext *dec;
967     AVPicture *picture2;
968     AVPicture picture_tmp;
969     uint8_t *buf = 0;
970
971     dec = ist->st->codec;
972
973     /* deinterlace : must be done before any resize */
974     if (do_deinterlace) {
975         int size;
976
977         /* create temporary picture */
978         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
979         buf = av_malloc(size);
980         if (!buf)
981             return;
982
983         picture2 = &picture_tmp;
984         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
985
986         if(avpicture_deinterlace(picture2, picture,
987                                  dec->pix_fmt, dec->width, dec->height) < 0) {
988             /* if error, do not deinterlace */
989             fprintf(stderr, "Deinterlacing failed\n");
990             av_free(buf);
991             buf = NULL;
992             picture2 = picture;
993         }
994     } else {
995         picture2 = picture;
996     }
997
998     if (picture != picture2)
999         *picture = *picture2;
1000     *bufp = buf;
1001 }
1002
1003 static void do_subtitle_out(AVFormatContext *s,
1004                             OutputStream *ost,
1005                             InputStream *ist,
1006                             AVSubtitle *sub,
1007                             int64_t pts)
1008 {
1009     static uint8_t *subtitle_out = NULL;
1010     int subtitle_out_max_size = 1024 * 1024;
1011     int subtitle_out_size, nb, i;
1012     AVCodecContext *enc;
1013     AVPacket pkt;
1014
1015     if (pts == AV_NOPTS_VALUE) {
1016         fprintf(stderr, "Subtitle packets must have a pts\n");
1017         if (exit_on_error)
1018             exit_program(1);
1019         return;
1020     }
1021
1022     enc = ost->st->codec;
1023
1024     if (!subtitle_out) {
1025         subtitle_out = av_malloc(subtitle_out_max_size);
1026     }
1027
1028     /* Note: DVB subtitle need one packet to draw them and one other
1029        packet to clear them */
1030     /* XXX: signal it in the codec context ? */
1031     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1032         nb = 2;
1033     else
1034         nb = 1;
1035
1036     for(i = 0; i < nb; i++) {
1037         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1038         // start_display_time is required to be 0
1039         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1040         sub->end_display_time -= sub->start_display_time;
1041         sub->start_display_time = 0;
1042         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1043                                                     subtitle_out_max_size, sub);
1044         if (subtitle_out_size < 0) {
1045             fprintf(stderr, "Subtitle encoding failed\n");
1046             exit_program(1);
1047         }
1048
1049         av_init_packet(&pkt);
1050         pkt.stream_index = ost->index;
1051         pkt.data = subtitle_out;
1052         pkt.size = subtitle_out_size;
1053         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1054         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1055             /* XXX: the pts correction is handled here. Maybe handling
1056                it in the codec would be better */
1057             if (i == 0)
1058                 pkt.pts += 90 * sub->start_display_time;
1059             else
1060                 pkt.pts += 90 * sub->end_display_time;
1061         }
1062         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1063     }
1064 }
1065
1066 static int bit_buffer_size= 1024*256;
1067 static uint8_t *bit_buffer= NULL;
1068
1069 static void do_video_resample(OutputStream *ost,
1070                               InputStream *ist,
1071                               AVFrame *in_picture,
1072                               AVFrame **out_picture)
1073 {
1074     int resample_changed = 0;
1075     AVCodecContext *dec = ist->st->codec;
1076     *out_picture = in_picture;
1077
1078     resample_changed = ost->resample_width   != dec->width  ||
1079                        ost->resample_height  != dec->height ||
1080                        ost->resample_pix_fmt != dec->pix_fmt;
1081
1082     if (resample_changed) {
1083         av_log(NULL, AV_LOG_INFO,
1084                "Input stream #%d.%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1085                ist->file_index, ist->st->index,
1086                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1087                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1088         if(!ost->video_resample)
1089             ost->video_resample = 1;
1090     }
1091
1092 #if !CONFIG_AVFILTER
1093     if (ost->video_resample) {
1094         *out_picture = &ost->pict_tmp;
1095         if (resample_changed) {
1096             /* initialize a new scaler context */
1097             sws_freeContext(ost->img_resample_ctx);
1098             ost->img_resample_ctx = sws_getContext(
1099                 ist->st->codec->width,
1100                 ist->st->codec->height,
1101                 ist->st->codec->pix_fmt,
1102                 ost->st->codec->width,
1103                 ost->st->codec->height,
1104                 ost->st->codec->pix_fmt,
1105                 ost->sws_flags, NULL, NULL, NULL);
1106             if (ost->img_resample_ctx == NULL) {
1107                 fprintf(stderr, "Cannot get resampling context\n");
1108                 exit_program(1);
1109             }
1110         }
1111         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1112               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1113     }
1114 #else
1115     if (resample_changed) {
1116         avfilter_graph_free(&ost->graph);
1117         if (configure_video_filters(ist, ost)) {
1118             fprintf(stderr, "Error reinitializing filters!\n");
1119             exit_program(1);
1120         }
1121     }
1122 #endif
1123     if (resample_changed) {
1124         ost->resample_width   = dec->width;
1125         ost->resample_height  = dec->height;
1126         ost->resample_pix_fmt = dec->pix_fmt;
1127     }
1128 }
1129
1130
1131 static void do_video_out(AVFormatContext *s,
1132                          OutputStream *ost,
1133                          InputStream *ist,
1134                          AVFrame *in_picture,
1135                          int *frame_size, float quality)
1136 {
1137     int nb_frames, i, ret, format_video_sync;
1138     AVFrame *final_picture;
1139     AVCodecContext *enc;
1140     double sync_ipts;
1141
1142     enc = ost->st->codec;
1143
1144     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1145
1146     /* by default, we output a single frame */
1147     nb_frames = 1;
1148
1149     *frame_size = 0;
1150
1151     format_video_sync = video_sync_method;
1152     if (format_video_sync < 0)
1153         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1154
1155     if (format_video_sync) {
1156         double vdelta = sync_ipts - ost->sync_opts;
1157         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1158         if (vdelta < -1.1)
1159             nb_frames = 0;
1160         else if (format_video_sync == 2) {
1161             if(vdelta<=-0.6){
1162                 nb_frames=0;
1163             }else if(vdelta>0.6)
1164                 ost->sync_opts= lrintf(sync_ipts);
1165         }else if (vdelta > 1.1)
1166             nb_frames = lrintf(vdelta);
1167 //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);
1168         if (nb_frames == 0){
1169             ++nb_frames_drop;
1170             if (verbose>2)
1171                 fprintf(stderr, "*** drop!\n");
1172         }else if (nb_frames > 1) {
1173             nb_frames_dup += nb_frames - 1;
1174             if (verbose>2)
1175                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1176         }
1177     }else
1178         ost->sync_opts= lrintf(sync_ipts);
1179
1180     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1181     if (nb_frames <= 0)
1182         return;
1183
1184     do_video_resample(ost, ist, in_picture, &final_picture);
1185
1186     /* duplicates frame if needed */
1187     for(i=0;i<nb_frames;i++) {
1188         AVPacket pkt;
1189         av_init_packet(&pkt);
1190         pkt.stream_index= ost->index;
1191
1192         if (s->oformat->flags & AVFMT_RAWPICTURE) {
1193             /* raw pictures are written as AVPicture structure to
1194                avoid any copies. We support temporarily the older
1195                method. */
1196             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1197             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1198             pkt.data= (uint8_t *)final_picture;
1199             pkt.size=  sizeof(AVPicture);
1200             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1201             pkt.flags |= AV_PKT_FLAG_KEY;
1202
1203             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1204         } else {
1205             AVFrame big_picture;
1206
1207             big_picture= *final_picture;
1208             /* better than nothing: use input picture interlaced
1209                settings */
1210             big_picture.interlaced_frame = in_picture->interlaced_frame;
1211             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1212                 if (ost->top_field_first == -1)
1213                     big_picture.top_field_first = in_picture->top_field_first;
1214                 else
1215                     big_picture.top_field_first = !!ost->top_field_first;
1216             }
1217
1218             /* handles same_quant here. This is not correct because it may
1219                not be a global option */
1220             big_picture.quality = quality;
1221             if (!enc->me_threshold)
1222                 big_picture.pict_type = 0;
1223 //            big_picture.pts = AV_NOPTS_VALUE;
1224             big_picture.pts= ost->sync_opts;
1225 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1226 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1227             if (ost->forced_kf_index < ost->forced_kf_count &&
1228                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1229                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1230                 ost->forced_kf_index++;
1231             }
1232             ret = avcodec_encode_video(enc,
1233                                        bit_buffer, bit_buffer_size,
1234                                        &big_picture);
1235             if (ret < 0) {
1236                 fprintf(stderr, "Video encoding failed\n");
1237                 exit_program(1);
1238             }
1239
1240             if(ret>0){
1241                 pkt.data= bit_buffer;
1242                 pkt.size= ret;
1243                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1244                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1245 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1246    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1247    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1248
1249                 if(enc->coded_frame->key_frame)
1250                     pkt.flags |= AV_PKT_FLAG_KEY;
1251                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1252                 *frame_size = ret;
1253                 video_size += ret;
1254                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1255                 //        enc->frame_number-1, ret, enc->pict_type);
1256                 /* if two pass, output log */
1257                 if (ost->logfile && enc->stats_out) {
1258                     fprintf(ost->logfile, "%s", enc->stats_out);
1259                 }
1260             }
1261         }
1262         ost->sync_opts++;
1263         ost->frame_number++;
1264     }
1265 }
1266
1267 static double psnr(double d){
1268     return -10.0*log(d)/log(10.0);
1269 }
1270
1271 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1272                            int frame_size)
1273 {
1274     AVCodecContext *enc;
1275     int frame_number;
1276     double ti1, bitrate, avg_bitrate;
1277
1278     /* this is executed just the first time do_video_stats is called */
1279     if (!vstats_file) {
1280         vstats_file = fopen(vstats_filename, "w");
1281         if (!vstats_file) {
1282             perror("fopen");
1283             exit_program(1);
1284         }
1285     }
1286
1287     enc = ost->st->codec;
1288     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1289         frame_number = ost->frame_number;
1290         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1291         if (enc->flags&CODEC_FLAG_PSNR)
1292             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1293
1294         fprintf(vstats_file,"f_size= %6d ", frame_size);
1295         /* compute pts value */
1296         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1297         if (ti1 < 0.01)
1298             ti1 = 0.01;
1299
1300         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1301         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1302         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1303             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1304         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1305     }
1306 }
1307
1308 static void print_report(OutputFile *output_files,
1309                          OutputStream *ost_table, int nb_ostreams,
1310                          int is_last_report, int64_t timer_start)
1311 {
1312     char buf[1024];
1313     OutputStream *ost;
1314     AVFormatContext *oc;
1315     int64_t total_size;
1316     AVCodecContext *enc;
1317     int frame_number, vid, i;
1318     double bitrate, ti1, pts;
1319     static int64_t last_time = -1;
1320     static int qp_histogram[52];
1321
1322     if (!is_last_report) {
1323         int64_t cur_time;
1324         /* display the report every 0.5 seconds */
1325         cur_time = av_gettime();
1326         if (last_time == -1) {
1327             last_time = cur_time;
1328             return;
1329         }
1330         if ((cur_time - last_time) < 500000)
1331             return;
1332         last_time = cur_time;
1333     }
1334
1335
1336     oc = output_files[0].ctx;
1337
1338     total_size = avio_size(oc->pb);
1339     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1340         total_size= avio_tell(oc->pb);
1341
1342     buf[0] = '\0';
1343     ti1 = 1e10;
1344     vid = 0;
1345     for(i=0;i<nb_ostreams;i++) {
1346         float q = -1;
1347         ost = &ost_table[i];
1348         enc = ost->st->codec;
1349         if (!ost->st->stream_copy && enc->coded_frame)
1350             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1351         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1352             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1353         }
1354         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1355             float t = (av_gettime()-timer_start) / 1000000.0;
1356
1357             frame_number = ost->frame_number;
1358             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1359                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1360             if(is_last_report)
1361                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1362             if(qp_hist){
1363                 int j;
1364                 int qp = lrintf(q);
1365                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1366                     qp_histogram[qp]++;
1367                 for(j=0; j<32; j++)
1368                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1369             }
1370             if (enc->flags&CODEC_FLAG_PSNR){
1371                 int j;
1372                 double error, error_sum=0;
1373                 double scale, scale_sum=0;
1374                 char type[3]= {'Y','U','V'};
1375                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1376                 for(j=0; j<3; j++){
1377                     if(is_last_report){
1378                         error= enc->error[j];
1379                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1380                     }else{
1381                         error= enc->coded_frame->error[j];
1382                         scale= enc->width*enc->height*255.0*255.0;
1383                     }
1384                     if(j) scale/=4;
1385                     error_sum += error;
1386                     scale_sum += scale;
1387                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1388                 }
1389                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1390             }
1391             vid = 1;
1392         }
1393         /* compute min output value */
1394         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1395         if ((pts < ti1) && (pts > 0))
1396             ti1 = pts;
1397     }
1398     if (ti1 < 0.01)
1399         ti1 = 0.01;
1400
1401     if (verbose > 0 || is_last_report) {
1402         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1403
1404         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1405             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1406             (double)total_size / 1024, ti1, bitrate);
1407
1408         if (nb_frames_dup || nb_frames_drop)
1409           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1410                   nb_frames_dup, nb_frames_drop);
1411
1412         if (verbose >= 0)
1413             fprintf(stderr, "%s    \r", buf);
1414
1415         fflush(stderr);
1416     }
1417
1418     if (is_last_report && verbose >= 0){
1419         int64_t raw= audio_size + video_size + extra_size;
1420         fprintf(stderr, "\n");
1421         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1422                 video_size/1024.0,
1423                 audio_size/1024.0,
1424                 extra_size/1024.0,
1425                 100.0*(total_size - raw)/raw
1426         );
1427     }
1428 }
1429
1430 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
1431 {
1432     int fill_char = 0x00;
1433     if (sample_fmt == AV_SAMPLE_FMT_U8)
1434         fill_char = 0x80;
1435     memset(buf, fill_char, size);
1436 }
1437
1438 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1439 {
1440     int i, ret;
1441
1442     for (i = 0; i < nb_ostreams; i++) {
1443         OutputStream   *ost = &ost_table[i];
1444         AVCodecContext *enc = ost->st->codec;
1445         AVFormatContext *os = output_files[ost->file_index].ctx;
1446
1447         if (!ost->encoding_needed)
1448             continue;
1449
1450         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1451             continue;
1452         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1453             continue;
1454
1455         for(;;) {
1456             AVPacket pkt;
1457             int fifo_bytes;
1458             av_init_packet(&pkt);
1459             pkt.stream_index= ost->index;
1460
1461             switch (ost->st->codec->codec_type) {
1462             case AVMEDIA_TYPE_AUDIO:
1463                 fifo_bytes = av_fifo_size(ost->fifo);
1464                 ret = 0;
1465                 /* encode any samples remaining in fifo */
1466                 if (fifo_bytes > 0) {
1467                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1468                     int fs_tmp = enc->frame_size;
1469
1470                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1471                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1472                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1473                     } else { /* pad */
1474                         int frame_bytes = enc->frame_size*osize*enc->channels;
1475                         if (allocated_audio_buf_size < frame_bytes)
1476                             exit_program(1);
1477                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1478                     }
1479
1480                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1481                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1482                                               ost->st->time_base.num, enc->sample_rate);
1483                     enc->frame_size = fs_tmp;
1484                 }
1485                 if (ret <= 0) {
1486                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1487                 }
1488                 if (ret < 0) {
1489                     fprintf(stderr, "Audio encoding failed\n");
1490                     exit_program(1);
1491                 }
1492                 audio_size += ret;
1493                 pkt.flags |= AV_PKT_FLAG_KEY;
1494                 break;
1495             case AVMEDIA_TYPE_VIDEO:
1496                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1497                 if (ret < 0) {
1498                     fprintf(stderr, "Video encoding failed\n");
1499                     exit_program(1);
1500                 }
1501                 video_size += ret;
1502                 if(enc->coded_frame && enc->coded_frame->key_frame)
1503                     pkt.flags |= AV_PKT_FLAG_KEY;
1504                 if (ost->logfile && enc->stats_out) {
1505                     fprintf(ost->logfile, "%s", enc->stats_out);
1506                 }
1507                 break;
1508             default:
1509                 ret=-1;
1510             }
1511
1512             if (ret <= 0)
1513                 break;
1514             pkt.data = bit_buffer;
1515             pkt.size = ret;
1516             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1517                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1518             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1519         }
1520     }
1521 }
1522
1523 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1524 static int output_packet(InputStream *ist, int ist_index,
1525                          OutputStream *ost_table, int nb_ostreams,
1526                          const AVPacket *pkt)
1527 {
1528     AVFormatContext *os;
1529     OutputStream *ost;
1530     int ret, i;
1531     int got_output;
1532     AVFrame picture;
1533     void *buffer_to_free = NULL;
1534     static unsigned int samples_size= 0;
1535     AVSubtitle subtitle, *subtitle_to_free;
1536     int64_t pkt_pts = AV_NOPTS_VALUE;
1537 #if CONFIG_AVFILTER
1538     int frame_available;
1539 #endif
1540     float quality;
1541
1542     AVPacket avpkt;
1543     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1544
1545     if(ist->next_pts == AV_NOPTS_VALUE)
1546         ist->next_pts= ist->pts;
1547
1548     if (pkt == NULL) {
1549         /* EOF handling */
1550         av_init_packet(&avpkt);
1551         avpkt.data = NULL;
1552         avpkt.size = 0;
1553         goto handle_eof;
1554     } else {
1555         avpkt = *pkt;
1556     }
1557
1558     if(pkt->dts != AV_NOPTS_VALUE)
1559         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1560     if(pkt->pts != AV_NOPTS_VALUE)
1561         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1562
1563     //while we have more to decode or while the decoder did output something on EOF
1564     while (avpkt.size > 0 || (!pkt && got_output)) {
1565         uint8_t *data_buf, *decoded_data_buf;
1566         int data_size, decoded_data_size;
1567     handle_eof:
1568         ist->pts= ist->next_pts;
1569
1570         if(avpkt.size && avpkt.size != pkt->size &&
1571            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1572             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1573             ist->showed_multi_packet_warning=1;
1574         }
1575
1576         /* decode the packet if needed */
1577         decoded_data_buf = NULL; /* fail safe */
1578         decoded_data_size= 0;
1579         data_buf  = avpkt.data;
1580         data_size = avpkt.size;
1581         subtitle_to_free = NULL;
1582         if (ist->decoding_needed) {
1583             switch(ist->st->codec->codec_type) {
1584             case AVMEDIA_TYPE_AUDIO:{
1585                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1586                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1587                     av_free(samples);
1588                     samples= av_malloc(samples_size);
1589                 }
1590                 decoded_data_size= samples_size;
1591                     /* XXX: could avoid copy if PCM 16 bits with same
1592                        endianness as CPU */
1593                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1594                                             &avpkt);
1595                 if (ret < 0)
1596                     return ret;
1597                 avpkt.data += ret;
1598                 avpkt.size -= ret;
1599                 data_size   = ret;
1600                 got_output  = decoded_data_size > 0;
1601                 /* Some bug in mpeg audio decoder gives */
1602                 /* decoded_data_size < 0, it seems they are overflows */
1603                 if (!got_output) {
1604                     /* no audio frame */
1605                     continue;
1606                 }
1607                 decoded_data_buf = (uint8_t *)samples;
1608                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1609                     (ist->st->codec->sample_rate * ist->st->codec->channels);
1610                 break;}
1611             case AVMEDIA_TYPE_VIDEO:
1612                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1613                     /* XXX: allocate picture correctly */
1614                     avcodec_get_frame_defaults(&picture);
1615                     avpkt.pts = pkt_pts;
1616                     avpkt.dts = ist->pts;
1617                     pkt_pts = AV_NOPTS_VALUE;
1618
1619                     ret = avcodec_decode_video2(ist->st->codec,
1620                                                 &picture, &got_output, &avpkt);
1621                     quality = same_quant ? picture.quality : 0;
1622                     if (ret < 0)
1623                         return ret;
1624                     if (!got_output) {
1625                         /* no picture yet */
1626                         goto discard_packet;
1627                     }
1628                     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, picture.pkt_pts, picture.pkt_dts);
1629                     if (ist->st->codec->time_base.num != 0) {
1630                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1631                         ist->next_pts += ((int64_t)AV_TIME_BASE *
1632                                           ist->st->codec->time_base.num * ticks) /
1633                             ist->st->codec->time_base.den;
1634                     }
1635                     avpkt.size = 0;
1636                     buffer_to_free = NULL;
1637                     pre_process_video_frame(ist, (AVPicture *)&picture, &buffer_to_free);
1638                     break;
1639             case AVMEDIA_TYPE_SUBTITLE:
1640                 ret = avcodec_decode_subtitle2(ist->st->codec,
1641                                                &subtitle, &got_output, &avpkt);
1642                 if (ret < 0)
1643                     return ret;
1644                 if (!got_output) {
1645                     goto discard_packet;
1646                 }
1647                 subtitle_to_free = &subtitle;
1648                 avpkt.size = 0;
1649                 break;
1650             default:
1651                 return -1;
1652             }
1653         } else {
1654             switch(ist->st->codec->codec_type) {
1655             case AVMEDIA_TYPE_AUDIO:
1656                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1657                     ist->st->codec->sample_rate;
1658                 break;
1659             case AVMEDIA_TYPE_VIDEO:
1660                 if (ist->st->codec->time_base.num != 0) {
1661                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1662                     ist->next_pts += ((int64_t)AV_TIME_BASE *
1663                                       ist->st->codec->time_base.num * ticks) /
1664                         ist->st->codec->time_base.den;
1665                 }
1666                 break;
1667             }
1668             avpkt.size = 0;
1669         }
1670
1671         // preprocess audio (volume)
1672         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1673             if (audio_volume != 256) {
1674                 short *volp;
1675                 volp = samples;
1676                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1677                     int v = ((*volp) * audio_volume + 128) >> 8;
1678                     *volp++ = av_clip_int16(v);
1679                 }
1680             }
1681         }
1682
1683         /* frame rate emulation */
1684         if (input_files[ist->file_index].rate_emu) {
1685             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1686             int64_t now = av_gettime() - ist->start;
1687             if (pts > now)
1688                 usleep(pts - now);
1689         }
1690         /* if output time reached then transcode raw format,
1691            encode packets and output them */
1692         for (i = 0; i < nb_ostreams; i++) {
1693             OutputFile *of = &output_files[ost_table[i].file_index];
1694             int frame_size;
1695
1696             ost = &ost_table[i];
1697             if (ost->source_index != ist_index)
1698                 continue;
1699
1700             if (of->start_time && ist->pts < of->start_time)
1701                 continue;
1702
1703             if (of->recording_time != INT64_MAX &&
1704                 av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1705                               (AVRational){1, 1000000}) >= 0) {
1706                 ost->is_past_recording_time = 1;
1707                 continue;
1708             }
1709
1710 #if CONFIG_AVFILTER
1711             if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1712                 ost->input_video_filter) {
1713                 AVRational sar;
1714                 if (ist->st->sample_aspect_ratio.num)
1715                     sar = ist->st->sample_aspect_ratio;
1716                 else
1717                     sar = ist->st->codec->sample_aspect_ratio;
1718                 av_vsrc_buffer_add_frame(ost->input_video_filter, &picture, ist->pts, sar);
1719             }
1720             frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1721                 !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1722             while (frame_available) {
1723                 AVRational ist_pts_tb;
1724                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
1725                     get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
1726                 if (ost->picref)
1727                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1728 #endif
1729                 os = output_files[ost->file_index].ctx;
1730
1731                 /* set the input output pts pairs */
1732                 //ost->sync_ipts = (double)(ist->pts + input_files[ist->file_index].ts_offset - start_time)/ AV_TIME_BASE;
1733
1734                 if (ost->encoding_needed) {
1735                     av_assert0(ist->decoding_needed);
1736                     switch(ost->st->codec->codec_type) {
1737                     case AVMEDIA_TYPE_AUDIO:
1738                         do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1739                         break;
1740                     case AVMEDIA_TYPE_VIDEO:
1741 #if CONFIG_AVFILTER
1742                         if (ost->picref->video && !ost->frame_aspect_ratio)
1743                             ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1744 #endif
1745                         do_video_out(os, ost, ist, &picture, &frame_size,
1746                                      same_quant ? quality : ost->st->codec->global_quality);
1747                         if (vstats_filename && frame_size)
1748                             do_video_stats(os, ost, frame_size);
1749                         break;
1750                     case AVMEDIA_TYPE_SUBTITLE:
1751                         do_subtitle_out(os, ost, ist, &subtitle,
1752                                         pkt->pts);
1753                         break;
1754                     default:
1755                         abort();
1756                     }
1757                 } else {
1758                     AVPacket opkt;
1759                     int64_t ost_tb_start_time= av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1760
1761                     av_init_packet(&opkt);
1762
1763                     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1764 #if !CONFIG_AVFILTER
1765                         continue;
1766 #else
1767                         goto cont;
1768 #endif
1769
1770                     /* no reencoding needed : output the packet directly */
1771                     /* force the input stream PTS */
1772
1773                     if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1774                         audio_size += data_size;
1775                     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1776                         video_size += data_size;
1777                         ost->sync_opts++;
1778                     }
1779
1780                     opkt.stream_index= ost->index;
1781                     if(pkt->pts != AV_NOPTS_VALUE)
1782                         opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1783                     else
1784                         opkt.pts= AV_NOPTS_VALUE;
1785
1786                     if (pkt->dts == AV_NOPTS_VALUE)
1787                         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1788                     else
1789                         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1790                     opkt.dts -= ost_tb_start_time;
1791
1792                     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1793                     opkt.flags= pkt->flags;
1794
1795                     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1796                     if(   ost->st->codec->codec_id != CODEC_ID_H264
1797                        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1798                        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1799                        ) {
1800                         if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1801                             opkt.destruct= av_destruct_packet;
1802                     } else {
1803                         opkt.data = data_buf;
1804                         opkt.size = data_size;
1805                     }
1806
1807                     write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
1808                     ost->st->codec->frame_number++;
1809                     ost->frame_number++;
1810                     av_free_packet(&opkt);
1811                 }
1812 #if CONFIG_AVFILTER
1813                 cont:
1814                 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1815                                    ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1816                 if (ost->picref)
1817                     avfilter_unref_buffer(ost->picref);
1818             }
1819 #endif
1820             }
1821
1822         av_free(buffer_to_free);
1823         /* XXX: allocate the subtitles in the codec ? */
1824         if (subtitle_to_free) {
1825             avsubtitle_free(subtitle_to_free);
1826             subtitle_to_free = NULL;
1827         }
1828     }
1829  discard_packet:
1830
1831     return 0;
1832 }
1833
1834 static void print_sdp(OutputFile *output_files, int n)
1835 {
1836     char sdp[2048];
1837     int i;
1838     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
1839
1840     if (!avc)
1841         exit_program(1);
1842     for (i = 0; i < n; i++)
1843         avc[i] = output_files[i].ctx;
1844
1845     av_sdp_create(avc, n, sdp, sizeof(sdp));
1846     printf("SDP:\n%s\n", sdp);
1847     fflush(stdout);
1848     av_freep(&avc);
1849 }
1850
1851 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
1852                              char *error, int error_len)
1853 {
1854     int i;
1855     InputStream *ist = &input_streams[ist_index];
1856     if (ist->decoding_needed) {
1857         AVCodec *codec = ist->dec;
1858         if (!codec) {
1859             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d.%d",
1860                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
1861             return AVERROR(EINVAL);
1862         }
1863
1864         /* update requested sample format for the decoder based on the
1865            corresponding encoder sample format */
1866         for (i = 0; i < nb_output_streams; i++) {
1867             OutputStream *ost = &output_streams[i];
1868             if (ost->source_index == ist_index) {
1869                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1870                 break;
1871             }
1872         }
1873
1874         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1875             snprintf(error, error_len, "Error while opening decoder for input stream #%d.%d",
1876                     ist->file_index, ist->st->index);
1877             return AVERROR(EINVAL);
1878         }
1879         assert_codec_experimental(ist->st->codec, 0);
1880         assert_avoptions(ist->opts);
1881     }
1882
1883     ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1884     ist->next_pts = AV_NOPTS_VALUE;
1885     init_pts_correction(&ist->pts_ctx);
1886     ist->is_start = 1;
1887
1888     return 0;
1889 }
1890
1891 static int transcode_init(OutputFile *output_files,
1892                           int nb_output_files,
1893                           InputFile *input_files,
1894                           int nb_input_files)
1895 {
1896     int ret = 0, i, j, k;
1897     AVFormatContext *os;
1898     AVCodecContext *codec, *icodec;
1899     OutputStream *ost;
1900     InputStream *ist;
1901     char error[1024];
1902     int want_sdp = 1;
1903
1904     /* init framerate emulation */
1905     for (i = 0; i < nb_input_files; i++) {
1906         InputFile *ifile = &input_files[i];
1907         if (ifile->rate_emu)
1908             for (j = 0; j < ifile->nb_streams; j++)
1909                 input_streams[j + ifile->ist_index].start = av_gettime();
1910     }
1911
1912     /* output stream init */
1913     for(i=0;i<nb_output_files;i++) {
1914         os = output_files[i].ctx;
1915         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
1916             av_dump_format(os, i, os->filename, 1);
1917             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
1918             return AVERROR(EINVAL);
1919         }
1920     }
1921
1922     /* for each output stream, we compute the right encoding parameters */
1923     for (i = 0; i < nb_output_streams; i++) {
1924         ost = &output_streams[i];
1925         os = output_files[ost->file_index].ctx;
1926         ist = &input_streams[ost->source_index];
1927
1928         codec = ost->st->codec;
1929         icodec = ist->st->codec;
1930
1931         ost->st->disposition = ist->st->disposition;
1932         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
1933         codec->chroma_sample_location = icodec->chroma_sample_location;
1934
1935         if (ost->st->stream_copy) {
1936             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1937
1938             if (extra_size > INT_MAX) {
1939                 return AVERROR(EINVAL);
1940             }
1941
1942             /* if stream_copy is selected, no need to decode or encode */
1943             codec->codec_id = icodec->codec_id;
1944             codec->codec_type = icodec->codec_type;
1945
1946             if(!codec->codec_tag){
1947                 if(   !os->oformat->codec_tag
1948                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
1949                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1950                     codec->codec_tag = icodec->codec_tag;
1951             }
1952
1953             codec->bit_rate = icodec->bit_rate;
1954             codec->rc_max_rate    = icodec->rc_max_rate;
1955             codec->rc_buffer_size = icodec->rc_buffer_size;
1956             codec->extradata= av_mallocz(extra_size);
1957             if (!codec->extradata) {
1958                 return AVERROR(ENOMEM);
1959             }
1960             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1961             codec->extradata_size= icodec->extradata_size;
1962             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){
1963                 codec->time_base = icodec->time_base;
1964                 codec->time_base.num *= icodec->ticks_per_frame;
1965                 av_reduce(&codec->time_base.num, &codec->time_base.den,
1966                           codec->time_base.num, codec->time_base.den, INT_MAX);
1967             }else
1968                 codec->time_base = ist->st->time_base;
1969             switch(codec->codec_type) {
1970             case AVMEDIA_TYPE_AUDIO:
1971                 if(audio_volume != 256) {
1972                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
1973                     exit_program(1);
1974                 }
1975                 codec->channel_layout = icodec->channel_layout;
1976                 codec->sample_rate = icodec->sample_rate;
1977                 codec->channels = icodec->channels;
1978                 codec->frame_size = icodec->frame_size;
1979                 codec->audio_service_type = icodec->audio_service_type;
1980                 codec->block_align= icodec->block_align;
1981                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1982                     codec->block_align= 0;
1983                 if(codec->codec_id == CODEC_ID_AC3)
1984                     codec->block_align= 0;
1985                 break;
1986             case AVMEDIA_TYPE_VIDEO:
1987                 codec->pix_fmt = icodec->pix_fmt;
1988                 codec->width = icodec->width;
1989                 codec->height = icodec->height;
1990                 codec->has_b_frames = icodec->has_b_frames;
1991                 if (!codec->sample_aspect_ratio.num) {
1992                     codec->sample_aspect_ratio =
1993                     ost->st->sample_aspect_ratio =
1994                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1995                         ist->st->codec->sample_aspect_ratio.num ?
1996                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1997                 }
1998                 break;
1999             case AVMEDIA_TYPE_SUBTITLE:
2000                 codec->width = icodec->width;
2001                 codec->height = icodec->height;
2002                 break;
2003             case AVMEDIA_TYPE_DATA:
2004                 break;
2005             default:
2006                 abort();
2007             }
2008         } else {
2009             if (!ost->enc)
2010                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2011             switch(codec->codec_type) {
2012             case AVMEDIA_TYPE_AUDIO:
2013                 ost->fifo= av_fifo_alloc(1024);
2014                 if (!ost->fifo) {
2015                     return AVERROR(ENOMEM);
2016                 }
2017                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2018                 if (!codec->sample_rate) {
2019                     codec->sample_rate = icodec->sample_rate;
2020                     if (icodec->lowres)
2021                         codec->sample_rate >>= icodec->lowres;
2022                 }
2023                 choose_sample_rate(ost->st, ost->enc);
2024                 codec->time_base = (AVRational){1, codec->sample_rate};
2025                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2026                     codec->sample_fmt = icodec->sample_fmt;
2027                 choose_sample_fmt(ost->st, ost->enc);
2028                 if (!codec->channels)
2029                     codec->channels = icodec->channels;
2030                 codec->channel_layout = icodec->channel_layout;
2031                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2032                     codec->channel_layout = 0;
2033                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2034                 icodec->request_channels = codec->channels;
2035                 ist->decoding_needed = 1;
2036                 ost->encoding_needed = 1;
2037                 ost->resample_sample_fmt  = icodec->sample_fmt;
2038                 ost->resample_sample_rate = icodec->sample_rate;
2039                 ost->resample_channels    = icodec->channels;
2040                 break;
2041             case AVMEDIA_TYPE_VIDEO:
2042                 if (codec->pix_fmt == PIX_FMT_NONE)
2043                     codec->pix_fmt = icodec->pix_fmt;
2044                 choose_pixel_fmt(ost->st, ost->enc);
2045
2046                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2047                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2048                     exit_program(1);
2049                 }
2050
2051                 if (!codec->width || !codec->height) {
2052                     codec->width  = icodec->width;
2053                     codec->height = icodec->height;
2054                 }
2055
2056                 ost->video_resample = codec->width   != icodec->width  ||
2057                                       codec->height  != icodec->height ||
2058                                       codec->pix_fmt != icodec->pix_fmt;
2059                 if (ost->video_resample) {
2060 #if !CONFIG_AVFILTER
2061                     avcodec_get_frame_defaults(&ost->pict_tmp);
2062                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2063                                        codec->width, codec->height)) {
2064                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2065                         exit_program(1);
2066                     }
2067                     ost->img_resample_ctx = sws_getContext(
2068                         icodec->width,
2069                         icodec->height,
2070                         icodec->pix_fmt,
2071                         codec->width,
2072                         codec->height,
2073                         codec->pix_fmt,
2074                         ost->sws_flags, NULL, NULL, NULL);
2075                     if (ost->img_resample_ctx == NULL) {
2076                         fprintf(stderr, "Cannot get resampling context\n");
2077                         exit_program(1);
2078                     }
2079 #endif
2080                     codec->bits_per_raw_sample= 0;
2081                 }
2082
2083                 ost->resample_height = icodec->height;
2084                 ost->resample_width  = icodec->width;
2085                 ost->resample_pix_fmt= icodec->pix_fmt;
2086                 ost->encoding_needed = 1;
2087                 ist->decoding_needed = 1;
2088
2089                 if (!ost->frame_rate.num)
2090                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2091                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2092                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2093                     ost->frame_rate = ost->enc->supported_framerates[idx];
2094                 }
2095                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2096
2097 #if CONFIG_AVFILTER
2098                 if (configure_video_filters(ist, ost)) {
2099                     fprintf(stderr, "Error opening filters!\n");
2100                     exit(1);
2101                 }
2102 #endif
2103                 break;
2104             case AVMEDIA_TYPE_SUBTITLE:
2105                 ost->encoding_needed = 1;
2106                 ist->decoding_needed = 1;
2107                 break;
2108             default:
2109                 abort();
2110                 break;
2111             }
2112             /* two pass mode */
2113             if (ost->encoding_needed &&
2114                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2115                 char logfilename[1024];
2116                 FILE *f;
2117
2118                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2119                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2120                          i);
2121                 if (codec->flags & CODEC_FLAG_PASS1) {
2122                     f = fopen(logfilename, "wb");
2123                     if (!f) {
2124                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2125                         exit_program(1);
2126                     }
2127                     ost->logfile = f;
2128                 } else {
2129                     char  *logbuffer;
2130                     size_t logbuffer_size;
2131                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2132                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2133                         exit_program(1);
2134                     }
2135                     codec->stats_in = logbuffer;
2136                 }
2137             }
2138         }
2139         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2140             int size= codec->width * codec->height;
2141             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2142         }
2143     }
2144
2145     if (!bit_buffer)
2146         bit_buffer = av_malloc(bit_buffer_size);
2147     if (!bit_buffer) {
2148         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2149                 bit_buffer_size);
2150         return AVERROR(ENOMEM);
2151     }
2152
2153     /* open each encoder */
2154     for (i = 0; i < nb_output_streams; i++) {
2155         ost = &output_streams[i];
2156         if (ost->encoding_needed) {
2157             AVCodec *codec = ost->enc;
2158             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2159             if (!codec) {
2160                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2161                          ost->st->codec->codec_id, ost->file_index, ost->index);
2162                 ret = AVERROR(EINVAL);
2163                 goto dump_format;
2164             }
2165             if (dec->subtitle_header) {
2166                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2167                 if (!ost->st->codec->subtitle_header) {
2168                     ret = AVERROR(ENOMEM);
2169                     goto dump_format;
2170                 }
2171                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2172                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2173             }
2174             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2175                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2176                         ost->file_index, ost->index);
2177                 ret = AVERROR(EINVAL);
2178                 goto dump_format;
2179             }
2180             assert_codec_experimental(ost->st->codec, 1);
2181             assert_avoptions(ost->opts);
2182             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2183                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2184                                              "It takes bits/s as argument, not kbits/s\n");
2185             extra_size += ost->st->codec->extradata_size;
2186
2187             if (ost->st->codec->me_threshold)
2188                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2189         }
2190     }
2191
2192     /* init input streams */
2193     for (i = 0; i < nb_input_streams; i++)
2194         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2195             goto dump_format;
2196
2197     /* discard unused programs */
2198     for (i = 0; i < nb_input_files; i++) {
2199         InputFile *ifile = &input_files[i];
2200         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2201             AVProgram *p = ifile->ctx->programs[j];
2202             int discard  = AVDISCARD_ALL;
2203
2204             for (k = 0; k < p->nb_stream_indexes; k++)
2205                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2206                     discard = AVDISCARD_DEFAULT;
2207                     break;
2208                 }
2209             p->discard = discard;
2210         }
2211     }
2212
2213     /* open files and write file headers */
2214     for (i = 0; i < nb_output_files; i++) {
2215         os = output_files[i].ctx;
2216         if (avformat_write_header(os, &output_files[i].opts) < 0) {
2217             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2218             ret = AVERROR(EINVAL);
2219             goto dump_format;
2220         }
2221         assert_avoptions(output_files[i].opts);
2222         if (strcmp(os->oformat->name, "rtp")) {
2223             want_sdp = 0;
2224         }
2225     }
2226
2227  dump_format:
2228     /* dump the file output parameters - cannot be done before in case
2229        of stream copy */
2230     for(i=0;i<nb_output_files;i++) {
2231         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2232     }
2233
2234     /* dump the stream mapping */
2235     if (verbose >= 0) {
2236         fprintf(stderr, "Stream mapping:\n");
2237         for (i = 0; i < nb_output_streams;i ++) {
2238             ost = &output_streams[i];
2239             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
2240                     input_streams[ost->source_index].file_index,
2241                     input_streams[ost->source_index].st->index,
2242                     ost->file_index,
2243                     ost->index);
2244             if (ost->sync_ist != &input_streams[ost->source_index])
2245                 fprintf(stderr, " [sync #%d.%d]",
2246                         ost->sync_ist->file_index,
2247                         ost->sync_ist->st->index);
2248             if (ost->st->stream_copy)
2249                 fprintf(stderr, " (copy)");
2250             else
2251                 fprintf(stderr, " (%s -> %s)", input_streams[ost->source_index].dec ?
2252                         input_streams[ost->source_index].dec->name : "?",
2253                         ost->enc ? ost->enc->name : "?");
2254             fprintf(stderr, "\n");
2255         }
2256     }
2257
2258     if (ret) {
2259         fprintf(stderr, "%s\n", error);
2260         return ret;
2261     }
2262
2263     if (want_sdp) {
2264         print_sdp(output_files, nb_output_files);
2265     }
2266
2267     return 0;
2268 }
2269
2270 /*
2271  * The following code is the main loop of the file converter
2272  */
2273 static int transcode(OutputFile *output_files,
2274                      int nb_output_files,
2275                      InputFile *input_files,
2276                      int nb_input_files)
2277 {
2278     int ret, i;
2279     AVFormatContext *is, *os;
2280     OutputStream *ost;
2281     InputStream *ist;
2282     uint8_t *no_packet;
2283     int no_packet_count=0;
2284     int64_t timer_start;
2285
2286     if (!(no_packet = av_mallocz(nb_input_files)))
2287         exit_program(1);
2288
2289     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2290     if (ret < 0)
2291         goto fail;
2292
2293     if (verbose >= 0)
2294         fprintf(stderr, "Press ctrl-c to stop encoding\n");
2295     term_init();
2296
2297     timer_start = av_gettime();
2298
2299     for(; received_sigterm == 0;) {
2300         int file_index, ist_index;
2301         AVPacket pkt;
2302         int64_t ipts_min;
2303         double opts_min;
2304
2305         ipts_min = INT64_MAX;
2306         opts_min= 1e100;
2307
2308         /* select the stream that we must read now by looking at the
2309            smallest output pts */
2310         file_index = -1;
2311         for (i = 0; i < nb_output_streams; i++) {
2312             OutputFile *of;
2313             int64_t ipts;
2314             double  opts;
2315             ost = &output_streams[i];
2316             of = &output_files[ost->file_index];
2317             os = output_files[ost->file_index].ctx;
2318             ist = &input_streams[ost->source_index];
2319             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2320                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2321                 continue;
2322             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2323             ipts = ist->pts;
2324             if (!input_files[ist->file_index].eof_reached){
2325                 if(ipts < ipts_min) {
2326                     ipts_min = ipts;
2327                     if(input_sync ) file_index = ist->file_index;
2328                 }
2329                 if(opts < opts_min) {
2330                     opts_min = opts;
2331                     if(!input_sync) file_index = ist->file_index;
2332                 }
2333             }
2334             if (ost->frame_number >= ost->max_frames) {
2335                 int j;
2336                 for (j = 0; j < of->ctx->nb_streams; j++)
2337                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2338                 continue;
2339             }
2340         }
2341         /* if none, if is finished */
2342         if (file_index < 0) {
2343             if(no_packet_count){
2344                 no_packet_count=0;
2345                 memset(no_packet, 0, nb_input_files);
2346                 usleep(10000);
2347                 continue;
2348             }
2349             break;
2350         }
2351
2352         /* read a frame from it and output it in the fifo */
2353         is = input_files[file_index].ctx;
2354         ret= av_read_frame(is, &pkt);
2355         if(ret == AVERROR(EAGAIN)){
2356             no_packet[file_index]=1;
2357             no_packet_count++;
2358             continue;
2359         }
2360         if (ret < 0) {
2361             input_files[file_index].eof_reached = 1;
2362             if (opt_shortest)
2363                 break;
2364             else
2365                 continue;
2366         }
2367
2368         no_packet_count=0;
2369         memset(no_packet, 0, nb_input_files);
2370
2371         if (do_pkt_dump) {
2372             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2373                              is->streams[pkt.stream_index]);
2374         }
2375         /* the following test is needed in case new streams appear
2376            dynamically in stream : we ignore them */
2377         if (pkt.stream_index >= input_files[file_index].nb_streams)
2378             goto discard_packet;
2379         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2380         ist = &input_streams[ist_index];
2381         if (ist->discard)
2382             goto discard_packet;
2383
2384         if (pkt.dts != AV_NOPTS_VALUE)
2385             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2386         if (pkt.pts != AV_NOPTS_VALUE)
2387             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2388
2389         if(pkt.pts != AV_NOPTS_VALUE)
2390             pkt.pts *= ist->ts_scale;
2391         if(pkt.dts != AV_NOPTS_VALUE)
2392             pkt.dts *= ist->ts_scale;
2393
2394 //        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);
2395         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2396             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2397             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2398             int64_t delta= pkt_dts - ist->next_pts;
2399             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2400                 input_files[ist->file_index].ts_offset -= delta;
2401                 if (verbose > 2)
2402                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2403                             delta, input_files[ist->file_index].ts_offset);
2404                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2405                 if(pkt.pts != AV_NOPTS_VALUE)
2406                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2407             }
2408         }
2409
2410         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2411         if (output_packet(ist, ist_index, output_streams, nb_output_streams, &pkt) < 0) {
2412
2413             if (verbose >= 0)
2414                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2415                         ist->file_index, ist->st->index);
2416             if (exit_on_error)
2417                 exit_program(1);
2418             av_free_packet(&pkt);
2419             continue;
2420         }
2421
2422     discard_packet:
2423         av_free_packet(&pkt);
2424
2425         /* dump report by using the output first video and audio streams */
2426         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2427     }
2428
2429     /* at the end of stream, we must flush the decoder buffers */
2430     for (i = 0; i < nb_input_streams; i++) {
2431         ist = &input_streams[i];
2432         if (ist->decoding_needed) {
2433             output_packet(ist, i, output_streams, nb_output_streams, NULL);
2434         }
2435     }
2436     flush_encoders(output_streams, nb_output_streams);
2437
2438     term_exit();
2439
2440     /* write the trailer if needed and close file */
2441     for(i=0;i<nb_output_files;i++) {
2442         os = output_files[i].ctx;
2443         av_write_trailer(os);
2444     }
2445
2446     /* dump report by using the first video and audio streams */
2447     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2448
2449     /* close each encoder */
2450     for (i = 0; i < nb_output_streams; i++) {
2451         ost = &output_streams[i];
2452         if (ost->encoding_needed) {
2453             av_freep(&ost->st->codec->stats_in);
2454             avcodec_close(ost->st->codec);
2455         }
2456 #if CONFIG_AVFILTER
2457         avfilter_graph_free(&ost->graph);
2458 #endif
2459     }
2460
2461     /* close each decoder */
2462     for (i = 0; i < nb_input_streams; i++) {
2463         ist = &input_streams[i];
2464         if (ist->decoding_needed) {
2465             avcodec_close(ist->st->codec);
2466         }
2467     }
2468
2469     /* finished ! */
2470     ret = 0;
2471
2472  fail:
2473     av_freep(&bit_buffer);
2474     av_freep(&no_packet);
2475
2476     if (output_streams) {
2477         for (i = 0; i < nb_output_streams; i++) {
2478             ost = &output_streams[i];
2479             if (ost) {
2480                 if (ost->st->stream_copy)
2481                     av_freep(&ost->st->codec->extradata);
2482                 if (ost->logfile) {
2483                     fclose(ost->logfile);
2484                     ost->logfile = NULL;
2485                 }
2486                 av_fifo_free(ost->fifo); /* works even if fifo is not
2487                                              initialized but set to zero */
2488                 av_freep(&ost->st->codec->subtitle_header);
2489                 av_free(ost->pict_tmp.data[0]);
2490                 av_free(ost->forced_kf_pts);
2491                 if (ost->video_resample)
2492                     sws_freeContext(ost->img_resample_ctx);
2493                 if (ost->resample)
2494                     audio_resample_close(ost->resample);
2495                 if (ost->reformat_ctx)
2496                     av_audio_convert_free(ost->reformat_ctx);
2497                 av_dict_free(&ost->opts);
2498             }
2499         }
2500     }
2501     return ret;
2502 }
2503
2504 static int opt_verbose(const char *opt, const char *arg)
2505 {
2506     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2507     return 0;
2508 }
2509
2510 static double parse_frame_aspect_ratio(const char *arg)
2511 {
2512     int x = 0, y = 0;
2513     double ar = 0;
2514     const char *p;
2515     char *end;
2516
2517     p = strchr(arg, ':');
2518     if (p) {
2519         x = strtol(arg, &end, 10);
2520         if (end == p)
2521             y = strtol(end+1, &end, 10);
2522         if (x > 0 && y > 0)
2523             ar = (double)x / (double)y;
2524     } else
2525         ar = strtod(arg, NULL);
2526
2527     if (!ar) {
2528         fprintf(stderr, "Incorrect aspect ratio specification.\n");
2529         exit_program(1);
2530     }
2531     return ar;
2532 }
2533
2534 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2535 {
2536     return parse_option(o, "codec:a", arg, options);
2537 }
2538
2539 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2540 {
2541     return parse_option(o, "codec:v", arg, options);
2542 }
2543
2544 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2545 {
2546     return parse_option(o, "codec:s", arg, options);
2547 }
2548
2549 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2550 {
2551     return parse_option(o, "codec:d", arg, options);
2552 }
2553
2554 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2555 {
2556     StreamMap *m = NULL;
2557     int i, negative = 0, file_idx;
2558     int sync_file_idx = -1, sync_stream_idx;
2559     char *p, *sync;
2560     char *map;
2561
2562     if (*arg == '-') {
2563         negative = 1;
2564         arg++;
2565     }
2566     map = av_strdup(arg);
2567
2568     /* parse sync stream first, just pick first matching stream */
2569     if (sync = strchr(map, ',')) {
2570         *sync = 0;
2571         sync_file_idx = strtol(sync + 1, &sync, 0);
2572         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2573             av_log(NULL, AV_LOG_ERROR, "Invalid sync file index: %d.\n", sync_file_idx);
2574             exit_program(1);
2575         }
2576         if (*sync)
2577             sync++;
2578         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2579             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2580                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2581                 sync_stream_idx = i;
2582                 break;
2583             }
2584         if (i == input_files[sync_file_idx].nb_streams) {
2585             av_log(NULL, AV_LOG_ERROR, "Sync stream specification in map %s does not "
2586                                        "match any streams.\n", arg);
2587             exit_program(1);
2588         }
2589     }
2590
2591
2592     file_idx = strtol(map, &p, 0);
2593     if (file_idx >= nb_input_files || file_idx < 0) {
2594         av_log(NULL, AV_LOG_ERROR, "Invalid input file index: %d.\n", file_idx);
2595         exit_program(1);
2596     }
2597     if (negative)
2598         /* disable some already defined maps */
2599         for (i = 0; i < o->nb_stream_maps; i++) {
2600             m = &o->stream_maps[i];
2601             if (check_stream_specifier(input_files[m->file_index].ctx,
2602                                        input_files[m->file_index].ctx->streams[m->stream_index],
2603                                        *p == ':' ? p + 1 : p) > 0)
2604                 m->disabled = 1;
2605         }
2606     else
2607         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2608             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2609                         *p == ':' ? p + 1 : p) <= 0)
2610                 continue;
2611             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2612                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2613             m = &o->stream_maps[o->nb_stream_maps - 1];
2614
2615             m->file_index   = file_idx;
2616             m->stream_index = i;
2617
2618             if (sync_file_idx >= 0) {
2619                 m->sync_file_index   = sync_file_idx;
2620                 m->sync_stream_index = sync_stream_idx;
2621             } else {
2622                 m->sync_file_index   = file_idx;
2623                 m->sync_stream_index = i;
2624             }
2625         }
2626
2627     if (!m) {
2628         av_log(NULL, AV_LOG_ERROR, "Stream map '%s' matches no streams.\n", arg);
2629         exit_program(1);
2630     }
2631
2632     av_freep(&map);
2633     return 0;
2634 }
2635
2636 static void parse_meta_type(char *arg, char *type, int *index)
2637 {
2638     if (*arg) {
2639         *type = *arg;
2640         switch (*arg) {
2641         case 'g':
2642             break;
2643         case 's':
2644         case 'c':
2645         case 'p':
2646             if (*(++arg) == ':')
2647                 *index = strtol(++arg, NULL, 0);
2648             break;
2649         default:
2650             fprintf(stderr, "Invalid metadata type %c.\n", *arg);
2651             exit_program(1);
2652         }
2653     } else
2654         *type = 'g';
2655 }
2656
2657 static int opt_map_metadata(OptionsContext *o, const char *opt, const char *arg)
2658 {
2659     MetadataMap *m, *m1;
2660     char *p;
2661
2662     o->meta_data_maps = grow_array(o->meta_data_maps, sizeof(*o->meta_data_maps),
2663                                    &o->nb_meta_data_maps, o->nb_meta_data_maps + 1);
2664
2665     m = &o->meta_data_maps[o->nb_meta_data_maps - 1][1];
2666     m->file = strtol(arg, &p, 0);
2667     parse_meta_type(*p ? p + 1 : p, &m->type, &m->index);
2668
2669     m1 = &o->meta_data_maps[o->nb_meta_data_maps - 1][0];
2670     if (p = strchr(opt, ':'))
2671         parse_meta_type(p + 1, &m1->type, &m1->index);
2672     else
2673         m1->type = 'g';
2674
2675     if (m->type == 'g' || m1->type == 'g')
2676         o->metadata_global_manual = 1;
2677     if (m->type == 's' || m1->type == 's')
2678         o->metadata_streams_manual = 1;
2679     if (m->type == 'c' || m1->type == 'c')
2680         o->metadata_chapters_manual = 1;
2681
2682     return 0;
2683 }
2684
2685 static enum CodecID find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
2686 {
2687     const char *codec_string = encoder ? "encoder" : "decoder";
2688     AVCodec *codec;
2689
2690     if(!name)
2691         return CODEC_ID_NONE;
2692     codec = encoder ?
2693         avcodec_find_encoder_by_name(name) :
2694         avcodec_find_decoder_by_name(name);
2695     if(!codec) {
2696         av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2697         exit_program(1);
2698     }
2699     if(codec->type != type) {
2700         av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2701         exit_program(1);
2702     }
2703     return codec->id;
2704 }
2705
2706 static AVCodec *choose_codec(OptionsContext *o, AVFormatContext *s, AVStream *st, enum AVMediaType type)
2707 {
2708     char *codec_name = NULL;
2709
2710     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
2711
2712     if (!codec_name) {
2713         if (s->oformat) {
2714             st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename, NULL, type);
2715             return avcodec_find_encoder(st->codec->codec_id);
2716         }
2717     } else if (!strcmp(codec_name, "copy"))
2718         st->stream_copy = 1;
2719     else {
2720         st->codec->codec_id = find_codec_or_die(codec_name, type, s->iformat == NULL);
2721         return s->oformat ? avcodec_find_encoder_by_name(codec_name) :
2722                             avcodec_find_decoder_by_name(codec_name);
2723     }
2724
2725     return NULL;
2726 }
2727
2728 /**
2729  * Add all the streams from the given input file to the global
2730  * list of input streams.
2731  */
2732 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
2733 {
2734     int i, rfps, rfps_base;
2735
2736     for (i = 0; i < ic->nb_streams; i++) {
2737         AVStream *st = ic->streams[i];
2738         AVCodecContext *dec = st->codec;
2739         InputStream *ist;
2740         double scale = 1.0;
2741
2742         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
2743         ist = &input_streams[nb_input_streams - 1];
2744         ist->st = st;
2745         ist->file_index = nb_input_files;
2746         ist->discard = 1;
2747         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
2748
2749         MATCH_PER_STREAM_OPT(ts_scale, dbl, scale, ic, st);
2750         ist->ts_scale = scale;
2751
2752         ist->dec = choose_codec(o, ic, st, dec->codec_type);
2753         if (!ist->dec)
2754             ist->dec = avcodec_find_decoder(dec->codec_id);
2755
2756         switch (dec->codec_type) {
2757         case AVMEDIA_TYPE_AUDIO:
2758             if (o->audio_disable)
2759                 st->discard= AVDISCARD_ALL;
2760             break;
2761         case AVMEDIA_TYPE_VIDEO:
2762             rfps      = ic->streams[i]->r_frame_rate.num;
2763             rfps_base = ic->streams[i]->r_frame_rate.den;
2764             if (dec->lowres) {
2765                 dec->flags |= CODEC_FLAG_EMU_EDGE;
2766                 dec->height >>= dec->lowres;
2767                 dec->width  >>= dec->lowres;
2768             }
2769
2770             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
2771
2772                 if (verbose >= 0)
2773                     fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2774                             i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
2775
2776                     (float)rfps / rfps_base, rfps, rfps_base);
2777             }
2778
2779             if (o->video_disable)
2780                 st->discard= AVDISCARD_ALL;
2781             else if(video_discard)
2782                 st->discard= video_discard;
2783             break;
2784         case AVMEDIA_TYPE_DATA:
2785             break;
2786         case AVMEDIA_TYPE_SUBTITLE:
2787             if (o->subtitle_disable)
2788                 st->discard = AVDISCARD_ALL;
2789             break;
2790         case AVMEDIA_TYPE_ATTACHMENT:
2791         case AVMEDIA_TYPE_UNKNOWN:
2792             break;
2793         default:
2794             abort();
2795         }
2796     }
2797 }
2798
2799 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
2800 {
2801     AVFormatContext *ic;
2802     AVInputFormat *file_iformat = NULL;
2803     int err, i, ret;
2804     int64_t timestamp;
2805     uint8_t buf[128];
2806     AVDictionary **opts;
2807     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
2808
2809     if (o->format) {
2810         if (!(file_iformat = av_find_input_format(o->format))) {
2811             fprintf(stderr, "Unknown input format: '%s'\n", o->format);
2812             exit_program(1);
2813         }
2814     }
2815
2816     if (!strcmp(filename, "-"))
2817         filename = "pipe:";
2818
2819     using_stdin |= !strncmp(filename, "pipe:", 5) ||
2820                     !strcmp(filename, "/dev/stdin");
2821
2822     /* get default parameters from command line */
2823     ic = avformat_alloc_context();
2824     if (!ic) {
2825         print_error(filename, AVERROR(ENOMEM));
2826         exit_program(1);
2827     }
2828     if (o->nb_audio_sample_rate) {
2829         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
2830         av_dict_set(&format_opts, "sample_rate", buf, 0);
2831     }
2832     if (o->nb_audio_channels) {
2833         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
2834         av_dict_set(&format_opts, "channels", buf, 0);
2835     }
2836     if (o->nb_frame_rates) {
2837         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
2838     }
2839     if (o->nb_frame_sizes) {
2840         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
2841     }
2842     if (o->nb_frame_pix_fmts)
2843         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
2844
2845     ic->flags |= AVFMT_FLAG_NONBLOCK;
2846
2847     /* open the input file with generic libav function */
2848     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
2849     if (err < 0) {
2850         print_error(filename, err);
2851         exit_program(1);
2852     }
2853     assert_avoptions(format_opts);
2854
2855     /* apply forced codec ids */
2856     for (i = 0; i < ic->nb_streams; i++)
2857         choose_codec(o, ic, ic->streams[i], ic->streams[i]->codec->codec_type);
2858
2859     /* Set AVCodecContext options for avformat_find_stream_info */
2860     opts = setup_find_stream_info_opts(ic, codec_opts);
2861     orig_nb_streams = ic->nb_streams;
2862
2863     /* If not enough info to get the stream parameters, we decode the
2864        first frames to get it. (used in mpeg case for example) */
2865     ret = avformat_find_stream_info(ic, opts);
2866     if (ret < 0 && verbose >= 0) {
2867         fprintf(stderr, "%s: could not find codec parameters\n", filename);
2868         av_close_input_file(ic);
2869         exit_program(1);
2870     }
2871
2872     timestamp = o->start_time;
2873     /* add the stream start time */
2874     if (ic->start_time != AV_NOPTS_VALUE)
2875         timestamp += ic->start_time;
2876
2877     /* if seeking requested, we execute it */
2878     if (o->start_time != 0) {
2879         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2880         if (ret < 0) {
2881             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2882                     filename, (double)timestamp / AV_TIME_BASE);
2883         }
2884     }
2885
2886     /* update the current parameters so that they match the one of the input stream */
2887     add_input_streams(o, ic);
2888
2889     /* dump the file content */
2890     if (verbose >= 0)
2891         av_dump_format(ic, nb_input_files, filename, 0);
2892
2893     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
2894     input_files[nb_input_files - 1].ctx        = ic;
2895     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
2896     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
2897     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
2898     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
2899
2900     for (i = 0; i < orig_nb_streams; i++)
2901         av_dict_free(&opts[i]);
2902     av_freep(&opts);
2903
2904     reset_options(o);
2905     return 0;
2906 }
2907
2908 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2909                                     AVCodecContext *avctx)
2910 {
2911     char *p;
2912     int n = 1, i;
2913     int64_t t;
2914
2915     for (p = kf; *p; p++)
2916         if (*p == ',')
2917             n++;
2918     ost->forced_kf_count = n;
2919     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
2920     if (!ost->forced_kf_pts) {
2921         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2922         exit_program(1);
2923     }
2924     for (i = 0; i < n; i++) {
2925         p = i ? strchr(p, ',') + 1 : kf;
2926         t = parse_time_or_die("force_key_frames", p, 1);
2927         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2928     }
2929 }
2930
2931 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
2932 {
2933     OutputStream *ost;
2934     AVStream *st = av_new_stream(oc, oc->nb_streams < o->nb_streamid_map ? o->streamid_map[oc->nb_streams] : 0);
2935     int idx      = oc->nb_streams - 1;
2936     int64_t max_frames = INT64_MAX;
2937     char *bsf = NULL, *next, *codec_tag = NULL;
2938     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
2939     double qscale = -1;
2940
2941     if (!st) {
2942         av_log(NULL, AV_LOG_ERROR, "Could not alloc stream.\n");
2943         exit_program(1);
2944     }
2945
2946     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
2947                                 nb_output_streams + 1);
2948     ost = &output_streams[nb_output_streams - 1];
2949     ost->file_index = nb_output_files;
2950     ost->index = idx;
2951     ost->st    = st;
2952     st->codec->codec_type = type;
2953     ost->enc = choose_codec(o, oc, st, type);
2954     if (ost->enc) {
2955         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
2956     }
2957
2958     avcodec_get_context_defaults3(st->codec, ost->enc);
2959     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
2960
2961     MATCH_PER_STREAM_OPT(max_frames, i64, max_frames, oc, st);
2962     ost->max_frames = max_frames;
2963
2964     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
2965     while (bsf) {
2966         if (next = strchr(bsf, ','))
2967             *next++ = 0;
2968         if (!(bsfc = av_bitstream_filter_init(bsf))) {
2969             av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter %s\n", bsf);
2970             exit_program(1);
2971         }
2972         if (bsfc_prev)
2973             bsfc_prev->next = bsfc;
2974         else
2975             ost->bitstream_filters = bsfc;
2976
2977         bsfc_prev = bsfc;
2978         bsf       = next;
2979     }
2980
2981     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
2982     if (codec_tag) {
2983         uint32_t tag = strtol(codec_tag, &next, 0);
2984         if (*next)
2985             tag = AV_RL32(codec_tag);
2986         st->codec->codec_tag = tag;
2987     }
2988
2989     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
2990     if (qscale >= 0 || same_quant) {
2991         st->codec->flags |= CODEC_FLAG_QSCALE;
2992         st->codec->global_quality = FF_QP2LAMBDA * qscale;
2993     }
2994
2995     ost->sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2996     return ost;
2997 }
2998
2999 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3000 {
3001     int i;
3002     const char *p = str;
3003     for(i = 0;; i++) {
3004         dest[i] = atoi(p);
3005         if(i == 63)
3006             break;
3007         p = strchr(p, ',');
3008         if(!p) {
3009             fprintf(stderr, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3010             exit_program(1);
3011         }
3012         p++;
3013     }
3014 }
3015
3016 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3017 {
3018     AVStream *st;
3019     OutputStream *ost;
3020     AVCodecContext *video_enc;
3021
3022     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3023     st  = ost->st;
3024     video_enc = st->codec;
3025
3026     if(oc->oformat->flags & AVFMT_GLOBALHEADER) {
3027         video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3028     }
3029
3030     if (!st->stream_copy) {
3031         const char *p = NULL;
3032         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3033         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3034         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3035         int i, force_fps = 0, top_field_first = -1;
3036
3037         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3038         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3039             av_log(NULL, AV_LOG_ERROR, "Invalid framerate value: %s\n", frame_rate);
3040             exit_program(1);
3041         }
3042
3043         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3044         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3045             av_log(NULL, AV_LOG_ERROR, "Invalid frame size: %s.\n", frame_size);
3046             exit_program(1);
3047         }
3048
3049         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3050         if (frame_aspect_ratio)
3051             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3052
3053         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3054         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3055             av_log(NULL, AV_LOG_ERROR, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3056             exit_program(1);
3057         }
3058         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3059
3060         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3061         if (intra_matrix) {
3062             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3063                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for intra matrix.\n");
3064                 exit_program(1);
3065             }
3066             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3067         }
3068         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3069         if (inter_matrix) {
3070             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3071                 av_log(NULL, AV_LOG_ERROR, "Could not allocate memory for inter matrix.\n");
3072                 exit_program(1);
3073             }
3074             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3075         }
3076
3077         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3078         for(i=0; p; i++){
3079             int start, end, q;
3080             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3081             if(e!=3){
3082                 fprintf(stderr, "error parsing rc_override\n");
3083                 exit_program(1);
3084             }
3085             video_enc->rc_override=
3086                 av_realloc(video_enc->rc_override,
3087                            sizeof(RcOverride)*(i+1));
3088             video_enc->rc_override[i].start_frame= start;
3089             video_enc->rc_override[i].end_frame  = end;
3090             if(q>0){
3091                 video_enc->rc_override[i].qscale= q;
3092                 video_enc->rc_override[i].quality_factor= 1.0;
3093             }
3094             else{
3095                 video_enc->rc_override[i].qscale= 0;
3096                 video_enc->rc_override[i].quality_factor= -q/100.0;
3097             }
3098             p= strchr(p, '/');
3099             if(p) p++;
3100         }
3101         video_enc->rc_override_count=i;
3102         if (!video_enc->rc_initial_buffer_occupancy)
3103             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3104         video_enc->intra_dc_precision= intra_dc_precision - 8;
3105
3106         /* two pass mode */
3107         if (do_pass) {
3108             if (do_pass == 1) {
3109                 video_enc->flags |= CODEC_FLAG_PASS1;
3110             } else {
3111                 video_enc->flags |= CODEC_FLAG_PASS2;
3112             }
3113         }
3114
3115         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3116         if (forced_key_frames)
3117             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3118
3119         MATCH_PER_STREAM_OPT(force_fps, i, force_fps, oc, st);
3120         ost->force_fps = force_fps;
3121
3122         MATCH_PER_STREAM_OPT(top_field_first, i, top_field_first, oc, st);
3123         ost->top_field_first = top_field_first;
3124
3125 #if CONFIG_AVFILTER
3126         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3127         if (filters)
3128             ost->avfilter = av_strdup(filters);
3129 #endif
3130     }
3131
3132     return ost;
3133 }
3134
3135 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3136 {
3137     AVStream *st;
3138     OutputStream *ost;
3139     AVCodecContext *audio_enc;
3140
3141     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3142     st  = ost->st;
3143
3144     audio_enc = st->codec;
3145     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3146
3147     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3148         audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3149     }
3150     if (!st->stream_copy) {
3151         char *sample_fmt = NULL;
3152
3153         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3154
3155         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3156         if (sample_fmt &&
3157             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3158             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", sample_fmt);
3159             exit_program(1);
3160         }
3161
3162         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3163     }
3164
3165     return ost;
3166 }
3167
3168 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3169 {
3170     AVStream *st;
3171     OutputStream *ost;
3172     AVCodecContext *data_enc;
3173
3174     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3175     st  = ost->st;
3176     data_enc = st->codec;
3177     if (!st->stream_copy) {
3178         fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
3179         exit_program(1);
3180     }
3181
3182     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3183         data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3184     }
3185
3186     return ost;
3187 }
3188
3189 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3190 {
3191     AVStream *st;
3192     OutputStream *ost;
3193     AVCodecContext *subtitle_enc;
3194
3195     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3196     st  = ost->st;
3197     subtitle_enc = st->codec;
3198
3199     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3200
3201     if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3202         subtitle_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3203     }
3204
3205     return ost;
3206 }
3207
3208 /* arg format is "output-stream-index:streamid-value". */
3209 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3210 {
3211     int idx;
3212     char *p;
3213     char idx_str[16];
3214
3215     av_strlcpy(idx_str, arg, sizeof(idx_str));
3216     p = strchr(idx_str, ':');
3217     if (!p) {
3218         fprintf(stderr,
3219                 "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3220                 arg, opt);
3221         exit_program(1);
3222     }
3223     *p++ = '\0';
3224     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3225     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3226     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3227     return 0;
3228 }
3229
3230 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3231 {
3232     AVFormatContext *is = ifile->ctx;
3233     AVFormatContext *os = ofile->ctx;
3234     int i;
3235
3236     for (i = 0; i < is->nb_chapters; i++) {
3237         AVChapter *in_ch = is->chapters[i], *out_ch;
3238         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3239                                       AV_TIME_BASE_Q, in_ch->time_base);
3240         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3241                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3242
3243
3244         if (in_ch->end < ts_off)
3245             continue;
3246         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3247             break;
3248
3249         out_ch = av_mallocz(sizeof(AVChapter));
3250         if (!out_ch)
3251             return AVERROR(ENOMEM);
3252
3253         out_ch->id        = in_ch->id;
3254         out_ch->time_base = in_ch->time_base;
3255         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3256         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3257
3258         if (copy_metadata)
3259             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3260
3261         os->nb_chapters++;
3262         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
3263         if (!os->chapters)
3264             return AVERROR(ENOMEM);
3265         os->chapters[os->nb_chapters - 1] = out_ch;
3266     }
3267     return 0;
3268 }
3269
3270 static int read_avserver_streams(OptionsContext *o, AVFormatContext *s, const char *filename)
3271 {
3272     int i, err;
3273     AVFormatContext *ic = NULL;
3274
3275     err = avformat_open_input(&ic, filename, NULL, NULL);
3276     if (err < 0)
3277         return err;
3278     /* copy stream format */
3279     for(i=0;i<ic->nb_streams;i++) {
3280         AVStream *st;
3281         OutputStream *ost;
3282         AVCodec *codec;
3283
3284         codec = avcodec_find_encoder(ic->streams[i]->codec->codec_id);
3285         ost   = new_output_stream(o, s, codec->type);
3286         st    = ost->st;
3287
3288         // FIXME: a more elegant solution is needed
3289         memcpy(st, ic->streams[i], sizeof(AVStream));
3290         st->info = NULL;
3291         avcodec_copy_context(st->codec, ic->streams[i]->codec);
3292
3293         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && !st->stream_copy)
3294             choose_sample_fmt(st, codec);
3295         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !st->stream_copy)
3296             choose_pixel_fmt(st, codec);
3297     }
3298
3299     av_close_input_file(ic);
3300     return 0;
3301 }
3302
3303 static void opt_output_file(void *optctx, const char *filename)
3304 {
3305     OptionsContext *o = optctx;
3306     AVFormatContext *oc;
3307     int i, err;
3308     AVOutputFormat *file_oformat;
3309     OutputStream *ost;
3310     InputStream  *ist;
3311
3312     if (!strcmp(filename, "-"))
3313         filename = "pipe:";
3314
3315     oc = avformat_alloc_context();
3316     if (!oc) {
3317         print_error(filename, AVERROR(ENOMEM));
3318         exit_program(1);
3319     }
3320
3321     if (o->format) {
3322         file_oformat = av_guess_format(o->format, NULL, NULL);
3323         if (!file_oformat) {
3324             fprintf(stderr, "Requested output format '%s' is not a suitable output format\n", o->format);
3325             exit_program(1);
3326         }
3327     } else {
3328         file_oformat = av_guess_format(NULL, filename, NULL);
3329         if (!file_oformat) {
3330             fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3331                     filename);
3332             exit_program(1);
3333         }
3334     }
3335
3336     oc->oformat = file_oformat;
3337     av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3338
3339     if (!strcmp(file_oformat->name, "ffm") &&
3340         av_strstart(filename, "http:", NULL)) {
3341         /* special case for files sent to avserver: we get the stream
3342            parameters from avserver */
3343         int err = read_avserver_streams(o, oc, filename);
3344         if (err < 0) {
3345             print_error(filename, err);
3346             exit_program(1);
3347         }
3348     } else if (!o->nb_stream_maps) {
3349         /* pick the "best" stream of each type */
3350 #define NEW_STREAM(type, index)\
3351         if (index >= 0) {\
3352             ost = new_ ## type ## _stream(o, oc);\
3353             ost->source_index = index;\
3354             ost->sync_ist     = &input_streams[index];\
3355             input_streams[index].discard = 0;\
3356         }
3357
3358         /* video: highest resolution */
3359         if (!o->video_disable && oc->oformat->video_codec != CODEC_ID_NONE) {
3360             int area = 0, idx = -1;
3361             for (i = 0; i < nb_input_streams; i++) {
3362                 ist = &input_streams[i];
3363                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3364                     ist->st->codec->width * ist->st->codec->height > area) {
3365                     area = ist->st->codec->width * ist->st->codec->height;
3366                     idx = i;
3367                 }
3368             }
3369             NEW_STREAM(video, idx);
3370         }
3371
3372         /* audio: most channels */
3373         if (!o->audio_disable && oc->oformat->audio_codec != CODEC_ID_NONE) {
3374             int channels = 0, idx = -1;
3375             for (i = 0; i < nb_input_streams; i++) {
3376                 ist = &input_streams[i];
3377                 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
3378                     ist->st->codec->channels > channels) {
3379                     channels = ist->st->codec->channels;
3380                     idx = i;
3381                 }
3382             }
3383             NEW_STREAM(audio, idx);
3384         }
3385
3386         /* subtitles: pick first */
3387         if (!o->subtitle_disable && oc->oformat->subtitle_codec != CODEC_ID_NONE) {