Do not fail when decoding invalid v410 files with odd width.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <signal.h>
33 #include <limits.h>
34 #include <unistd.h>
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavutil/opt.h"
39 #include "libavcodec/audioconvert.h"
40 #include "libavutil/audioconvert.h"
41 #include "libavutil/parseutils.h"
42 #include "libavutil/samplefmt.h"
43 #include "libavutil/colorspace.h"
44 #include "libavutil/fifo.h"
45 #include "libavutil/intreadwrite.h"
46 #include "libavutil/dict.h"
47 #include "libavutil/mathematics.h"
48 #include "libavutil/pixdesc.h"
49 #include "libavutil/avstring.h"
50 #include "libavutil/libm.h"
51 #include "libavutil/imgutils.h"
52 #include "libavformat/os_support.h"
53 #include "libswresample/swresample.h"
54
55 #include "libavformat/ffm.h" // not public API
56
57 #if CONFIG_AVFILTER
58 # include "libavfilter/avcodec.h"
59 # include "libavfilter/avfilter.h"
60 # include "libavfilter/avfiltergraph.h"
61 # include "libavfilter/buffersink.h"
62 # include "libavfilter/buffersrc.h"
63 # include "libavfilter/vsrc_buffer.h"
64 #endif
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/time.h>
69 #include <sys/resource.h>
70 #elif HAVE_GETPROCESSTIMES
71 #include <windows.h>
72 #endif
73 #if HAVE_GETPROCESSMEMORYINFO
74 #include <windows.h>
75 #include <psapi.h>
76 #endif
77
78 #if HAVE_SYS_SELECT_H
79 #include <sys/select.h>
80 #endif
81
82 #if HAVE_TERMIOS_H
83 #include <fcntl.h>
84 #include <sys/ioctl.h>
85 #include <sys/time.h>
86 #include <termios.h>
87 #elif HAVE_KBHIT
88 #include <conio.h>
89 #endif
90 #include <time.h>
91
92 #include "cmdutils.h"
93
94 #include "libavutil/avassert.h"
95
96 const char program_name[] = "ffmpeg";
97 const int program_birth_year = 2000;
98
99 /* select an input stream for an output stream */
100 typedef struct StreamMap {
101     int disabled;           /** 1 is this mapping is disabled by a negative map */
102     int file_index;
103     int stream_index;
104     int sync_file_index;
105     int sync_stream_index;
106 } StreamMap;
107
108 typedef struct {
109     int  file_idx,  stream_idx,  channel_idx; // input
110     int ofile_idx, ostream_idx;               // output
111 } AudioChannelMap;
112
113 /**
114  * select an input file for an output file
115  */
116 typedef struct MetadataMap {
117     int  file;      ///< file index
118     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
119     int  index;     ///< stream/chapter/program number
120 } MetadataMap;
121
122 static const OptionDef options[];
123
124 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
125
126 static int frame_bits_per_raw_sample = 0;
127 static int video_discard = 0;
128 static int same_quant = 0;
129 static int do_deinterlace = 0;
130 static int intra_dc_precision = 8;
131 static int loop_input = 0;
132 static int loop_output = AVFMT_NOOUTPUTLOOP;
133 static int qp_hist = 0;
134 static int intra_only = 0;
135 static const char *video_codec_name    = NULL;
136 static const char *audio_codec_name    = NULL;
137 static const char *subtitle_codec_name = NULL;
138
139 static int file_overwrite = 0;
140 static int no_file_overwrite = 0;
141 static int do_benchmark = 0;
142 static int do_hex_dump = 0;
143 static int do_pkt_dump = 0;
144 static int do_psnr = 0;
145 static int do_pass = 0;
146 static const char *pass_logfilename_prefix;
147 static int video_sync_method= -1;
148 static int audio_sync_method= 0;
149 static float audio_drift_threshold= 0.1;
150 static int copy_ts= 0;
151 static int copy_tb= -1;
152 static int opt_shortest = 0;
153 static char *vstats_filename;
154 static FILE *vstats_file;
155
156 static int audio_volume = 256;
157
158 static int exit_on_error = 0;
159 static int using_stdin = 0;
160 static int run_as_daemon  = 0;
161 static volatile int received_nb_signals = 0;
162 static int64_t video_size = 0;
163 static int64_t audio_size = 0;
164 static int64_t extra_size = 0;
165 static int nb_frames_dup = 0;
166 static int nb_frames_drop = 0;
167 static int input_sync;
168
169 static float dts_delta_threshold = 10;
170
171 static int print_stats = 1;
172
173 static uint8_t *audio_buf;
174 static uint8_t *audio_out;
175 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
176
177 static uint8_t *input_tmp= NULL;
178
179 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
180
181 typedef struct FrameBuffer {
182     uint8_t *base[4];
183     uint8_t *data[4];
184     int  linesize[4];
185
186     int h, w;
187     enum PixelFormat pix_fmt;
188
189     int refcount;
190     struct InputStream *ist;
191     struct FrameBuffer *next;
192 } FrameBuffer;
193
194 typedef struct InputStream {
195     int file_index;
196     AVStream *st;
197     int discard;             /* true if stream data should be discarded */
198     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
199     AVCodec *dec;
200     AVFrame *decoded_frame;
201     AVFrame *filtered_frame;
202
203     int64_t       start;     /* time when read started */
204     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
205                                 is not defined */
206     int64_t       pts;       /* current pts */
207     double ts_scale;
208     int is_start;            /* is 1 at the start and after a discontinuity */
209     int showed_multi_packet_warning;
210     AVDictionary *opts;
211
212     /* a pool of free buffers for decoded data */
213     FrameBuffer *buffer_pool;
214     int dr1;
215 } InputStream;
216
217 typedef struct InputFile {
218     AVFormatContext *ctx;
219     int eof_reached;      /* true if eof reached */
220     int ist_index;        /* index of first stream in input_streams */
221     int buffer_size;      /* current total buffer size */
222     int64_t ts_offset;
223     int nb_streams;       /* number of stream that ffmpeg is aware of; may be different
224                              from ctx.nb_streams if new streams appear during av_read_frame() */
225     int rate_emu;
226 } InputFile;
227
228 typedef struct OutputStream {
229     int file_index;          /* file index */
230     int index;               /* stream index in the output file */
231     int source_index;        /* InputStream index */
232     AVStream *st;            /* stream in the output file */
233     int encoding_needed;     /* true if encoding needed for this stream */
234     int frame_number;
235     /* input pts and corresponding output pts
236        for A/V sync */
237     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
238     struct InputStream *sync_ist; /* input stream to sync against */
239     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
240     AVBitStreamFilterContext *bitstream_filters;
241     AVCodec *enc;
242     int64_t max_frames;
243
244     /* video only */
245     int video_resample;
246     AVFrame resample_frame;              /* temporary frame for image resampling */
247     struct SwsContext *img_resample_ctx; /* for image resampling */
248     int resample_height;
249     int resample_width;
250     int resample_pix_fmt;
251     AVRational frame_rate;
252     int force_fps;
253     int top_field_first;
254
255     float frame_aspect_ratio;
256
257     /* forced key frames */
258     int64_t *forced_kf_pts;
259     int forced_kf_count;
260     int forced_kf_index;
261
262     /* audio only */
263     int audio_resample;
264     int audio_channels_map[SWR_CH_MAX];  ///< list of the channels id to pick from the source stream
265     int audio_channels_mapped;           ///< number of channels in audio_channels_map
266     int resample_sample_fmt;
267     int resample_channels;
268     int resample_sample_rate;
269     float rematrix_volume;
270     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
271     FILE *logfile;
272
273     struct SwrContext *swr;
274
275 #if CONFIG_AVFILTER
276     AVFilterContext *output_video_filter;
277     AVFilterContext *input_video_filter;
278     AVFilterBufferRef *picref;
279     char *avfilter;
280     AVFilterGraph *graph;
281 #endif
282
283     int64_t sws_flags;
284     AVDictionary *opts;
285     int is_past_recording_time;
286     int stream_copy;
287     const char *attachment_filename;
288     int copy_initial_nonkeyframes;
289 } OutputStream;
290
291
292 #if HAVE_TERMIOS_H
293
294 /* init terminal so that we can grab keys */
295 static struct termios oldtty;
296 #endif
297
298 typedef struct OutputFile {
299     AVFormatContext *ctx;
300     AVDictionary *opts;
301     int ost_index;       /* index of the first stream in output_streams */
302     int64_t recording_time; /* desired length of the resulting file in microseconds */
303     int64_t start_time;     /* start time in microseconds */
304     uint64_t limit_filesize;
305 } OutputFile;
306
307 static InputStream *input_streams = NULL;
308 static int         nb_input_streams = 0;
309 static InputFile   *input_files   = NULL;
310 static int         nb_input_files   = 0;
311
312 static OutputStream *output_streams = NULL;
313 static int        nb_output_streams = 0;
314 static OutputFile   *output_files   = NULL;
315 static int        nb_output_files   = 0;
316
317 typedef struct OptionsContext {
318     /* input/output options */
319     int64_t start_time;
320     const char *format;
321
322     SpecifierOpt *codec_names;
323     int        nb_codec_names;
324     SpecifierOpt *audio_channels;
325     int        nb_audio_channels;
326     SpecifierOpt *audio_sample_rate;
327     int        nb_audio_sample_rate;
328     SpecifierOpt *rematrix_volume;
329     int        nb_rematrix_volume;
330     SpecifierOpt *frame_rates;
331     int        nb_frame_rates;
332     SpecifierOpt *frame_sizes;
333     int        nb_frame_sizes;
334     SpecifierOpt *frame_pix_fmts;
335     int        nb_frame_pix_fmts;
336
337     /* input options */
338     int64_t input_ts_offset;
339     int rate_emu;
340
341     SpecifierOpt *ts_scale;
342     int        nb_ts_scale;
343     SpecifierOpt *dump_attachment;
344     int        nb_dump_attachment;
345
346     /* output options */
347     StreamMap *stream_maps;
348     int     nb_stream_maps;
349     AudioChannelMap *audio_channel_maps; ///< one info entry per -map_channel
350     int           nb_audio_channel_maps; ///< number of (valid) -map_channel settings
351     /* first item specifies output metadata, second is input */
352     MetadataMap (*meta_data_maps)[2];
353     int nb_meta_data_maps;
354     int metadata_global_manual;
355     int metadata_streams_manual;
356     int metadata_chapters_manual;
357     const char **attachments;
358     int       nb_attachments;
359
360     int chapters_input_file;
361
362     int64_t recording_time;
363     uint64_t limit_filesize;
364     float mux_preload;
365     float mux_max_delay;
366
367     int video_disable;
368     int audio_disable;
369     int subtitle_disable;
370     int data_disable;
371
372     /* indexed by output file stream index */
373     int   *streamid_map;
374     int nb_streamid_map;
375
376     SpecifierOpt *metadata;
377     int        nb_metadata;
378     SpecifierOpt *max_frames;
379     int        nb_max_frames;
380     SpecifierOpt *bitstream_filters;
381     int        nb_bitstream_filters;
382     SpecifierOpt *codec_tags;
383     int        nb_codec_tags;
384     SpecifierOpt *sample_fmts;
385     int        nb_sample_fmts;
386     SpecifierOpt *qscale;
387     int        nb_qscale;
388     SpecifierOpt *forced_key_frames;
389     int        nb_forced_key_frames;
390     SpecifierOpt *force_fps;
391     int        nb_force_fps;
392     SpecifierOpt *frame_aspect_ratios;
393     int        nb_frame_aspect_ratios;
394     SpecifierOpt *rc_overrides;
395     int        nb_rc_overrides;
396     SpecifierOpt *intra_matrices;
397     int        nb_intra_matrices;
398     SpecifierOpt *inter_matrices;
399     int        nb_inter_matrices;
400     SpecifierOpt *top_field_first;
401     int        nb_top_field_first;
402     SpecifierOpt *metadata_map;
403     int        nb_metadata_map;
404     SpecifierOpt *presets;
405     int        nb_presets;
406     SpecifierOpt *copy_initial_nonkeyframes;
407     int        nb_copy_initial_nonkeyframes;
408 #if CONFIG_AVFILTER
409     SpecifierOpt *filters;
410     int        nb_filters;
411 #endif
412 } OptionsContext;
413
414 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
415 {\
416     int i, ret;\
417     for (i = 0; i < o->nb_ ## name; i++) {\
418         char *spec = o->name[i].specifier;\
419         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
420             outvar = o->name[i].u.type;\
421         else if (ret < 0)\
422             exit_program(1);\
423     }\
424 }
425
426 static void reset_options(OptionsContext *o, int is_input)
427 {
428     const OptionDef *po = options;
429     OptionsContext bak= *o;
430
431     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
432     while (po->name) {
433         void *dst = (uint8_t*)o + po->u.off;
434
435         if (po->flags & OPT_SPEC) {
436             SpecifierOpt **so = dst;
437             int i, *count = (int*)(so + 1);
438             for (i = 0; i < *count; i++) {
439                 av_freep(&(*so)[i].specifier);
440                 if (po->flags & OPT_STRING)
441                     av_freep(&(*so)[i].u.str);
442             }
443             av_freep(so);
444             *count = 0;
445         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
446             av_freep(dst);
447         po++;
448     }
449
450     av_freep(&o->stream_maps);
451     av_freep(&o->audio_channel_maps);
452     av_freep(&o->meta_data_maps);
453     av_freep(&o->streamid_map);
454
455     memset(o, 0, sizeof(*o));
456
457     if(is_input) o->recording_time = bak.recording_time;
458     else         o->recording_time = INT64_MAX;
459     o->mux_max_delay  = 0.7;
460     o->limit_filesize = UINT64_MAX;
461     o->chapters_input_file = INT_MAX;
462
463     uninit_opts();
464     init_opts();
465 }
466
467 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
468 {
469     AVCodecContext *s = ist->st->codec;
470     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
471     int ret, i;
472     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
473     int h_chroma_shift, v_chroma_shift;
474     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
475     int w = s->width, h = s->height;
476
477     if (!buf)
478         return AVERROR(ENOMEM);
479
480     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
481         w += 2*edge;
482         h += 2*edge;
483     }
484
485     avcodec_align_dimensions(s, &w, &h);
486     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
487                               s->pix_fmt, 32)) < 0) {
488         av_freep(&buf);
489         return ret;
490     }
491     /* XXX this shouldn't be needed, but some tests break without this line
492      * those decoders are buggy and need to be fixed.
493      * the following tests fail:
494      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
495      */
496     memset(buf->base[0], 128, ret);
497
498     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
499     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
500         const int h_shift = i==0 ? 0 : h_chroma_shift;
501         const int v_shift = i==0 ? 0 : v_chroma_shift;
502         if (s->flags & CODEC_FLAG_EMU_EDGE)
503             buf->data[i] = buf->base[i];
504         else
505             buf->data[i] = buf->base[i] +
506                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
507                                    (pixel_size*edge >> h_shift), 32);
508     }
509     buf->w       = s->width;
510     buf->h       = s->height;
511     buf->pix_fmt = s->pix_fmt;
512     buf->ist     = ist;
513
514     *pbuf = buf;
515     return 0;
516 }
517
518 static void free_buffer_pool(InputStream *ist)
519 {
520     FrameBuffer *buf = ist->buffer_pool;
521     while (buf) {
522         ist->buffer_pool = buf->next;
523         av_freep(&buf->base[0]);
524         av_free(buf);
525         buf = ist->buffer_pool;
526     }
527 }
528
529 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
530 {
531     av_assert0(buf->refcount);
532     buf->refcount--;
533     if (!buf->refcount) {
534         buf->next = ist->buffer_pool;
535         ist->buffer_pool = buf;
536     }
537 }
538
539 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
540 {
541     InputStream *ist = s->opaque;
542     FrameBuffer *buf;
543     int ret, i;
544
545     if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
546         return ret;
547
548     buf              = ist->buffer_pool;
549     ist->buffer_pool = buf->next;
550     buf->next        = NULL;
551     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
552         av_freep(&buf->base[0]);
553         av_free(buf);
554         ist->dr1 = 0;
555         if ((ret = alloc_buffer(ist, &buf)) < 0)
556             return ret;
557     }
558     buf->refcount++;
559
560     frame->opaque        = buf;
561     frame->type          = FF_BUFFER_TYPE_USER;
562     frame->extended_data = frame->data;
563     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
564
565     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
566         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
567         frame->data[i]     = buf->data[i];
568         frame->linesize[i] = buf->linesize[i];
569     }
570
571     return 0;
572 }
573
574 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
575 {
576     InputStream *ist = s->opaque;
577     FrameBuffer *buf = frame->opaque;
578     int i;
579
580     if(frame->type!=FF_BUFFER_TYPE_USER)
581         return avcodec_default_release_buffer(s, frame);
582
583     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
584         frame->data[i] = NULL;
585
586     unref_buffer(ist, buf);
587 }
588
589 static void filter_release_buffer(AVFilterBuffer *fb)
590 {
591     FrameBuffer *buf = fb->priv;
592     av_free(fb);
593     unref_buffer(buf->ist, buf);
594 }
595
596 #if CONFIG_AVFILTER
597
598 static int configure_video_filters(InputStream *ist, OutputStream *ost)
599 {
600     AVFilterContext *last_filter, *filter;
601     /** filter graph containing all filters including input & output */
602     AVCodecContext *codec = ost->st->codec;
603     AVCodecContext *icodec = ist->st->codec;
604     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
605     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
606     AVRational sample_aspect_ratio;
607     char args[255];
608     int ret;
609
610     ost->graph = avfilter_graph_alloc();
611
612     if (ist->st->sample_aspect_ratio.num){
613         sample_aspect_ratio = ist->st->sample_aspect_ratio;
614     }else
615         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
616
617     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
618              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
619              sample_aspect_ratio.num, sample_aspect_ratio.den);
620
621     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
622                                        "src", args, NULL, ost->graph);
623     if (ret < 0)
624         return ret;
625 #if FF_API_OLD_VSINK_API
626     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
627                                        "out", NULL, pix_fmts, ost->graph);
628 #else
629     buffersink_params->pixel_fmts = pix_fmts;
630     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
631                                        "out", NULL, buffersink_params, ost->graph);
632 #endif
633     av_freep(&buffersink_params);
634     if (ret < 0)
635         return ret;
636     last_filter = ost->input_video_filter;
637
638     if (codec->width  != icodec->width || codec->height != icodec->height) {
639         snprintf(args, 255, "%d:%d:flags=0x%X",
640                  codec->width,
641                  codec->height,
642                  (unsigned)ost->sws_flags);
643         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
644                                                 NULL, args, NULL, ost->graph)) < 0)
645             return ret;
646         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
647             return ret;
648         last_filter = filter;
649     }
650
651     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
652     ost->graph->scale_sws_opts = av_strdup(args);
653
654     if (ost->avfilter) {
655         AVFilterInOut *outputs = avfilter_inout_alloc();
656         AVFilterInOut *inputs  = avfilter_inout_alloc();
657
658         outputs->name    = av_strdup("in");
659         outputs->filter_ctx = last_filter;
660         outputs->pad_idx = 0;
661         outputs->next    = NULL;
662
663         inputs->name    = av_strdup("out");
664         inputs->filter_ctx = ost->output_video_filter;
665         inputs->pad_idx = 0;
666         inputs->next    = NULL;
667
668         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
669             return ret;
670         av_freep(&ost->avfilter);
671     } else {
672         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
673             return ret;
674     }
675
676     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
677         return ret;
678
679     codec->width  = ost->output_video_filter->inputs[0]->w;
680     codec->height = ost->output_video_filter->inputs[0]->h;
681     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
682         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
683         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
684         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
685
686     return 0;
687 }
688 #endif /* CONFIG_AVFILTER */
689
690 static void term_exit(void)
691 {
692     av_log(NULL, AV_LOG_QUIET, "%s", "");
693 #if HAVE_TERMIOS_H
694     if(!run_as_daemon)
695         tcsetattr (0, TCSANOW, &oldtty);
696 #endif
697 }
698
699 static volatile int received_sigterm = 0;
700
701 static void sigterm_handler(int sig)
702 {
703     received_sigterm = sig;
704     received_nb_signals++;
705     term_exit();
706     if(received_nb_signals > 3)
707         exit(123);
708 }
709
710 static void term_init(void)
711 {
712 #if HAVE_TERMIOS_H
713     if(!run_as_daemon){
714     struct termios tty;
715
716     tcgetattr (0, &tty);
717     oldtty = tty;
718     atexit(term_exit);
719
720     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
721                           |INLCR|IGNCR|ICRNL|IXON);
722     tty.c_oflag |= OPOST;
723     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
724     tty.c_cflag &= ~(CSIZE|PARENB);
725     tty.c_cflag |= CS8;
726     tty.c_cc[VMIN] = 1;
727     tty.c_cc[VTIME] = 0;
728
729     tcsetattr (0, TCSANOW, &tty);
730     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
731     }
732 #endif
733     avformat_network_deinit();
734
735     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
736     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
737 #ifdef SIGXCPU
738     signal(SIGXCPU, sigterm_handler);
739 #endif
740 }
741
742 /* read a key without blocking */
743 static int read_key(void)
744 {
745     unsigned char ch;
746 #if HAVE_TERMIOS_H
747     int n = 1;
748     struct timeval tv;
749     fd_set rfds;
750
751     FD_ZERO(&rfds);
752     FD_SET(0, &rfds);
753     tv.tv_sec = 0;
754     tv.tv_usec = 0;
755     n = select(1, &rfds, NULL, NULL, &tv);
756     if (n > 0) {
757         n = read(0, &ch, 1);
758         if (n == 1)
759             return ch;
760
761         return n;
762     }
763 #elif HAVE_KBHIT
764 #    if HAVE_PEEKNAMEDPIPE
765     static int is_pipe;
766     static HANDLE input_handle;
767     DWORD dw, nchars;
768     if(!input_handle){
769         input_handle = GetStdHandle(STD_INPUT_HANDLE);
770         is_pipe = !GetConsoleMode(input_handle, &dw);
771     }
772
773     if (stdin->_cnt > 0) {
774         read(0, &ch, 1);
775         return ch;
776     }
777     if (is_pipe) {
778         /* When running under a GUI, you will end here. */
779         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
780             return -1;
781         //Read it
782         if(nchars != 0) {
783             read(0, &ch, 1);
784             return ch;
785         }else{
786             return -1;
787         }
788     }
789 #    endif
790     if(kbhit())
791         return(getch());
792 #endif
793     return -1;
794 }
795
796 static int decode_interrupt_cb(void *ctx)
797 {
798     return received_nb_signals > 1;
799 }
800
801 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
802
803 void av_noreturn exit_program(int ret)
804 {
805     int i;
806
807     /* close files */
808     for(i=0;i<nb_output_files;i++) {
809         AVFormatContext *s = output_files[i].ctx;
810         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
811             avio_close(s->pb);
812         avformat_free_context(s);
813         av_dict_free(&output_files[i].opts);
814     }
815     for(i=0;i<nb_input_files;i++) {
816         avformat_close_input(&input_files[i].ctx);
817     }
818     for (i = 0; i < nb_input_streams; i++) {
819         av_freep(&input_streams[i].decoded_frame);
820         av_freep(&input_streams[i].filtered_frame);
821         av_dict_free(&input_streams[i].opts);
822         free_buffer_pool(&input_streams[i]);
823     }
824
825     if (vstats_file)
826         fclose(vstats_file);
827     av_free(vstats_filename);
828
829     av_freep(&input_streams);
830     av_freep(&input_files);
831     av_freep(&output_streams);
832     av_freep(&output_files);
833
834     uninit_opts();
835     av_free(audio_buf);
836     av_free(audio_out);
837     allocated_audio_buf_size= allocated_audio_out_size= 0;
838
839 #if CONFIG_AVFILTER
840     avfilter_uninit();
841 #endif
842     avformat_network_deinit();
843
844     av_freep(&input_tmp);
845
846     if (received_sigterm) {
847         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
848                (int) received_sigterm);
849         exit (255);
850     }
851
852     exit(ret); /* not all OS-es handle main() return value */
853 }
854
855 static void assert_avoptions(AVDictionary *m)
856 {
857     AVDictionaryEntry *t;
858     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
859         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
860         exit_program(1);
861     }
862 }
863
864 static void assert_codec_experimental(AVCodecContext *c, int encoder)
865 {
866     const char *codec_string = encoder ? "encoder" : "decoder";
867     AVCodec *codec;
868     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
869         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
870         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
871                 "results.\nAdd '-strict experimental' if you want to use it.\n",
872                 codec_string, c->codec->name);
873         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
874         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
875             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
876                    codec_string, codec->name);
877         exit_program(1);
878     }
879 }
880
881 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
882 {
883     if(codec && codec->sample_fmts){
884         const enum AVSampleFormat *p= codec->sample_fmts;
885         for(; *p!=-1; p++){
886             if(*p == st->codec->sample_fmt)
887                 break;
888         }
889         if (*p == -1) {
890             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
891                 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
892             if(av_get_sample_fmt_name(st->codec->sample_fmt))
893             av_log(NULL, AV_LOG_WARNING,
894                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
895                    av_get_sample_fmt_name(st->codec->sample_fmt),
896                    codec->name,
897                    av_get_sample_fmt_name(codec->sample_fmts[0]));
898             st->codec->sample_fmt = codec->sample_fmts[0];
899         }
900     }
901 }
902
903 static void choose_sample_rate(AVStream *st, AVCodec *codec)
904 {
905     if(codec && codec->supported_samplerates){
906         const int *p= codec->supported_samplerates;
907         int best=0;
908         int best_dist=INT_MAX;
909         for(; *p; p++){
910             int dist= abs(st->codec->sample_rate - *p);
911             if(dist < best_dist){
912                 best_dist= dist;
913                 best= *p;
914             }
915         }
916         if(best_dist){
917             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
918         }
919         st->codec->sample_rate= best;
920     }
921 }
922
923 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
924 {
925     if(codec && codec->pix_fmts){
926         const enum PixelFormat *p= codec->pix_fmts;
927         int has_alpha= av_pix_fmt_descriptors[st->codec->pix_fmt].nb_components % 2 == 0;
928         enum PixelFormat best= PIX_FMT_NONE;
929         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
930             if(st->codec->codec_id==CODEC_ID_MJPEG){
931                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
932             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
933                 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};
934             }
935         }
936         for (; *p != PIX_FMT_NONE; p++) {
937             best= avcodec_find_best_pix_fmt2(best, *p, st->codec->pix_fmt, has_alpha, NULL);
938             if(*p == st->codec->pix_fmt)
939                 break;
940         }
941         if (*p == PIX_FMT_NONE) {
942             if(st->codec->pix_fmt != PIX_FMT_NONE)
943                 av_log(NULL, AV_LOG_WARNING,
944                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
945                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
946                         codec->name,
947                         av_pix_fmt_descriptors[best].name);
948             st->codec->pix_fmt = best;
949         }
950     }
951 }
952
953 static double get_sync_ipts(const OutputStream *ost)
954 {
955     const InputStream *ist = ost->sync_ist;
956     OutputFile *of = &output_files[ost->file_index];
957     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
958 }
959
960 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc)
961 {
962     int ret;
963
964     while(bsfc){
965         AVPacket new_pkt= *pkt;
966         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
967                                           &new_pkt.data, &new_pkt.size,
968                                           pkt->data, pkt->size,
969                                           pkt->flags & AV_PKT_FLAG_KEY);
970         if(a>0){
971             av_free_packet(pkt);
972             new_pkt.destruct= av_destruct_packet;
973         } else if(a<0){
974             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
975                    bsfc->filter->name, pkt->stream_index,
976                    avctx->codec ? avctx->codec->name : "copy");
977             print_error("", a);
978             if (exit_on_error)
979                 exit_program(1);
980         }
981         *pkt= new_pkt;
982
983         bsfc= bsfc->next;
984     }
985
986     ret= av_interleaved_write_frame(s, pkt);
987     if(ret < 0){
988         print_error("av_interleaved_write_frame()", ret);
989         exit_program(1);
990     }
991 }
992
993 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
994 {
995     int fill_char = 0x00;
996     if (sample_fmt == AV_SAMPLE_FMT_U8)
997         fill_char = 0x80;
998     memset(buf, fill_char, size);
999 }
1000
1001 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
1002                          InputStream *ist, AVFrame *decoded_frame)
1003 {
1004     uint8_t *buftmp;
1005     int64_t audio_out_size, audio_buf_size;
1006
1007     int size_out, frame_bytes, ret, resample_changed;
1008     AVCodecContext *enc= ost->st->codec;
1009     AVCodecContext *dec= ist->st->codec;
1010     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1011     int isize = av_get_bytes_per_sample(dec->sample_fmt);
1012     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
1013     uint8_t *buf = decoded_frame->data[0];
1014     int size     = decoded_frame->nb_samples * dec->channels * isize;
1015     int64_t allocated_for_size = size;
1016
1017 need_realloc:
1018     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
1019     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
1020     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
1021     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
1022     audio_buf_size*= osize*enc->channels;
1023
1024     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
1025     if(coded_bps > 8*osize)
1026         audio_out_size= audio_out_size * coded_bps / (8*osize);
1027     audio_out_size += FF_MIN_BUFFER_SIZE;
1028
1029     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
1030         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
1031         exit_program(1);
1032     }
1033
1034     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
1035     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
1036     if (!audio_buf || !audio_out){
1037         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
1038         exit_program(1);
1039     }
1040
1041     if (enc->channels != dec->channels
1042      || enc->sample_fmt != dec->sample_fmt
1043      || enc->sample_rate!= dec->sample_rate
1044     )
1045         ost->audio_resample = 1;
1046
1047     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
1048                        ost->resample_channels    != dec->channels   ||
1049                        ost->resample_sample_rate != dec->sample_rate;
1050
1051     if ((ost->audio_resample && !ost->swr) || resample_changed || ost->audio_channels_mapped) {
1052         if (resample_changed) {
1053             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",
1054                    ist->file_index, ist->st->index,
1055                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
1056                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
1057             ost->resample_sample_fmt  = dec->sample_fmt;
1058             ost->resample_channels    = dec->channels;
1059             ost->resample_sample_rate = dec->sample_rate;
1060             swr_free(&ost->swr);
1061         }
1062         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
1063         if (audio_sync_method <= 1 && !ost->audio_channels_mapped &&
1064             ost->resample_sample_fmt  == enc->sample_fmt &&
1065             ost->resample_channels    == enc->channels   &&
1066             ost->resample_sample_rate == enc->sample_rate) {
1067             //ost->swr = NULL;
1068             ost->audio_resample = 0;
1069         } else {
1070             ost->swr = swr_alloc_set_opts(ost->swr,
1071                                           enc->channel_layout, enc->sample_fmt, enc->sample_rate,
1072                                           dec->channel_layout, dec->sample_fmt, dec->sample_rate,
1073                                           0, NULL);
1074             if (ost->audio_channels_mapped)
1075                 swr_set_channel_mapping(ost->swr, ost->audio_channels_map);
1076             av_opt_set_double(ost->swr, "rmvol", ost->rematrix_volume, 0);
1077             if (ost->audio_channels_mapped) {
1078                 av_opt_set_int(ost->swr, "icl", av_get_default_channel_layout(ost->audio_channels_mapped), 0);
1079                 av_opt_set_int(ost->swr, "uch", ost->audio_channels_mapped, 0);
1080             }
1081             av_opt_set_int(ost->swr, "ich", dec->channels, 0);
1082             av_opt_set_int(ost->swr, "och", enc->channels, 0);
1083             if(audio_sync_method>1) av_opt_set_int(ost->swr, "flags", SWR_FLAG_RESAMPLE, 0);
1084             if(ost->swr && swr_init(ost->swr) < 0){
1085                 av_log(NULL, AV_LOG_FATAL, "swr_init() failed\n");
1086                 swr_free(&ost->swr);
1087             }
1088
1089             if (!ost->swr) {
1090                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1091                         dec->channels, dec->sample_rate,
1092                         enc->channels, enc->sample_rate);
1093                 exit_program(1);
1094             }
1095         }
1096     }
1097
1098     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1099
1100     if(audio_sync_method){
1101         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
1102                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
1103         int idelta = delta * dec->sample_rate / enc->sample_rate;
1104         int byte_delta = idelta * isize * dec->channels;
1105
1106         //FIXME resample delay
1107         if(fabs(delta) > 50){
1108             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
1109                 if(byte_delta < 0){
1110                     byte_delta= FFMAX(byte_delta, -size);
1111                     size += byte_delta;
1112                     buf  -= byte_delta;
1113                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1114                            -byte_delta / (isize * dec->channels));
1115                     if(!size)
1116                         return;
1117                     ist->is_start=0;
1118                 }else{
1119                     input_tmp= av_realloc(input_tmp, byte_delta + size);
1120
1121                     if(byte_delta > allocated_for_size - size){
1122                         allocated_for_size= byte_delta + (int64_t)size;
1123                         goto need_realloc;
1124                     }
1125                     ist->is_start=0;
1126
1127                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1128                     memcpy(input_tmp + byte_delta, buf, size);
1129                     buf= input_tmp;
1130                     size += byte_delta;
1131                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1132                 }
1133             }else if(audio_sync_method>1){
1134                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
1135                 av_assert0(ost->audio_resample);
1136                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1137                        delta, comp, enc->sample_rate);
1138 //                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));
1139                 swr_compensate(ost->swr, comp, enc->sample_rate);
1140             }
1141         }
1142     }else
1143         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
1144                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
1145
1146     if (ost->audio_resample) {
1147         buftmp = audio_buf;
1148         size_out = swr_convert(ost->swr, (      uint8_t*[]){buftmp}, audio_buf_size / (enc->channels * osize),
1149                                          (const uint8_t*[]){buf   }, size / (dec->channels * isize));
1150         size_out = size_out * enc->channels * osize;
1151     } else {
1152         buftmp = buf;
1153         size_out = size;
1154     }
1155
1156     av_assert0(ost->audio_resample || dec->sample_fmt==enc->sample_fmt);
1157
1158     /* now encode as many frames as possible */
1159     if (enc->frame_size > 1) {
1160         /* output resampled raw samples */
1161         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1162             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1163             exit_program(1);
1164         }
1165         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1166
1167         frame_bytes = enc->frame_size * osize * enc->channels;
1168
1169         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1170             AVPacket pkt;
1171             av_init_packet(&pkt);
1172
1173             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1174
1175             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1176
1177             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1178                                        (short *)audio_buf);
1179             if (ret < 0) {
1180                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1181                 exit_program(1);
1182             }
1183             audio_size += ret;
1184             pkt.stream_index= ost->index;
1185             pkt.data= audio_out;
1186             pkt.size= ret;
1187             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1188                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1189             pkt.flags |= AV_PKT_FLAG_KEY;
1190             write_frame(s, &pkt, enc, ost->bitstream_filters);
1191
1192             ost->sync_opts += enc->frame_size;
1193         }
1194     } else {
1195         AVPacket pkt;
1196         av_init_packet(&pkt);
1197
1198         ost->sync_opts += size_out / (osize * enc->channels);
1199
1200         /* output a pcm frame */
1201         /* determine the size of the coded buffer */
1202         size_out /= osize;
1203         if (coded_bps)
1204             size_out = size_out*coded_bps/8;
1205
1206         if(size_out > audio_out_size){
1207             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1208             exit_program(1);
1209         }
1210
1211         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1212         ret = avcodec_encode_audio(enc, audio_out, size_out,
1213                                    (short *)buftmp);
1214         if (ret < 0) {
1215             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1216             exit_program(1);
1217         }
1218         audio_size += ret;
1219         pkt.stream_index= ost->index;
1220         pkt.data= audio_out;
1221         pkt.size= ret;
1222         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1223             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1224         pkt.flags |= AV_PKT_FLAG_KEY;
1225         write_frame(s, &pkt, enc, ost->bitstream_filters);
1226     }
1227 }
1228
1229 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1230 {
1231     AVCodecContext *dec;
1232     AVPicture *picture2;
1233     AVPicture picture_tmp;
1234     uint8_t *buf = 0;
1235
1236     dec = ist->st->codec;
1237
1238     /* deinterlace : must be done before any resize */
1239     if (do_deinterlace) {
1240         int size;
1241
1242         /* create temporary picture */
1243         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1244         buf = av_malloc(size);
1245         if (!buf)
1246             return;
1247
1248         picture2 = &picture_tmp;
1249         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1250
1251         if(avpicture_deinterlace(picture2, picture,
1252                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1253             /* if error, do not deinterlace */
1254             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1255             av_free(buf);
1256             buf = NULL;
1257             picture2 = picture;
1258         }
1259     } else {
1260         picture2 = picture;
1261     }
1262
1263     if (picture != picture2)
1264         *picture = *picture2;
1265     *bufp = buf;
1266 }
1267
1268 static void do_subtitle_out(AVFormatContext *s,
1269                             OutputStream *ost,
1270                             InputStream *ist,
1271                             AVSubtitle *sub,
1272                             int64_t pts)
1273 {
1274     static uint8_t *subtitle_out = NULL;
1275     int subtitle_out_max_size = 1024 * 1024;
1276     int subtitle_out_size, nb, i;
1277     AVCodecContext *enc;
1278     AVPacket pkt;
1279
1280     if (pts == AV_NOPTS_VALUE) {
1281         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1282         if (exit_on_error)
1283             exit_program(1);
1284         return;
1285     }
1286
1287     enc = ost->st->codec;
1288
1289     if (!subtitle_out) {
1290         subtitle_out = av_malloc(subtitle_out_max_size);
1291     }
1292
1293     /* Note: DVB subtitle need one packet to draw them and one other
1294        packet to clear them */
1295     /* XXX: signal it in the codec context ? */
1296     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1297         nb = 2;
1298     else
1299         nb = 1;
1300
1301     for(i = 0; i < nb; i++) {
1302         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1303         // start_display_time is required to be 0
1304         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1305         sub->end_display_time -= sub->start_display_time;
1306         sub->start_display_time = 0;
1307         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1308                                                     subtitle_out_max_size, sub);
1309         if (subtitle_out_size < 0) {
1310             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1311             exit_program(1);
1312         }
1313
1314         av_init_packet(&pkt);
1315         pkt.stream_index = ost->index;
1316         pkt.data = subtitle_out;
1317         pkt.size = subtitle_out_size;
1318         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1319         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1320             /* XXX: the pts correction is handled here. Maybe handling
1321                it in the codec would be better */
1322             if (i == 0)
1323                 pkt.pts += 90 * sub->start_display_time;
1324             else
1325                 pkt.pts += 90 * sub->end_display_time;
1326         }
1327         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1328     }
1329 }
1330
1331 static int bit_buffer_size= 1024*256;
1332 static uint8_t *bit_buffer= NULL;
1333
1334 static void do_video_resample(OutputStream *ost,
1335                               InputStream *ist,
1336                               AVFrame *in_picture,
1337                               AVFrame **out_picture)
1338 {
1339 #if CONFIG_AVFILTER
1340     *out_picture = in_picture;
1341 #else
1342     AVCodecContext *dec = ist->st->codec;
1343     AVCodecContext *enc = ost->st->codec;
1344     int resample_changed = ost->resample_width   != dec->width  ||
1345                            ost->resample_height  != dec->height ||
1346                            ost->resample_pix_fmt != dec->pix_fmt;
1347
1348     *out_picture = in_picture;
1349     if (resample_changed) {
1350         av_log(NULL, AV_LOG_INFO,
1351                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1352                ist->file_index, ist->st->index,
1353                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1354                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1355         ost->resample_width   = dec->width;
1356         ost->resample_height  = dec->height;
1357         ost->resample_pix_fmt = dec->pix_fmt;
1358     }
1359
1360     ost->video_resample = dec->width   != enc->width  ||
1361                           dec->height  != enc->height ||
1362                           dec->pix_fmt != enc->pix_fmt;
1363
1364     if (ost->video_resample) {
1365         *out_picture = &ost->resample_frame;
1366         if (!ost->img_resample_ctx || resample_changed) {
1367             /* initialize the destination picture */
1368             if (!ost->resample_frame.data[0]) {
1369                 avcodec_get_frame_defaults(&ost->resample_frame);
1370                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1371                                     enc->width, enc->height)) {
1372                     av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
1373                     exit_program(1);
1374                 }
1375             }
1376             /* initialize a new scaler context */
1377             sws_freeContext(ost->img_resample_ctx);
1378             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1379                                                    enc->width, enc->height, enc->pix_fmt,
1380                                                    ost->sws_flags, NULL, NULL, NULL);
1381             if (ost->img_resample_ctx == NULL) {
1382                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1383                 exit_program(1);
1384             }
1385         }
1386         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1387               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1388     }
1389 #endif
1390 }
1391
1392
1393 static void do_video_out(AVFormatContext *s,
1394                          OutputStream *ost,
1395                          InputStream *ist,
1396                          AVFrame *in_picture,
1397                          int *frame_size, float quality)
1398 {
1399     int nb_frames, i, ret, format_video_sync;
1400     AVFrame *final_picture;
1401     AVCodecContext *enc;
1402     double sync_ipts;
1403     double duration = 0;
1404
1405     enc = ost->st->codec;
1406
1407     if (ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE) {
1408         duration = FFMAX(av_q2d(ist->st->time_base), av_q2d(ist->st->codec->time_base));
1409         if(ist->st->avg_frame_rate.num)
1410             duration= FFMAX(duration, 1/av_q2d(ist->st->avg_frame_rate));
1411
1412         duration /= av_q2d(enc->time_base);
1413     }
1414
1415     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1416
1417     /* by default, we output a single frame */
1418     nb_frames = 1;
1419
1420     *frame_size = 0;
1421
1422     format_video_sync = video_sync_method;
1423     if (format_video_sync < 0)
1424         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 : 2) : 1;
1425
1426     if (format_video_sync) {
1427         double vdelta = sync_ipts - ost->sync_opts + duration;
1428         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1429         if (vdelta < -1.1)
1430             nb_frames = 0;
1431         else if (format_video_sync == 2) {
1432             if(vdelta<=-0.6){
1433                 nb_frames=0;
1434             }else if(vdelta>0.6)
1435                 ost->sync_opts= lrintf(sync_ipts);
1436         }else if (vdelta > 1.1)
1437             nb_frames = lrintf(vdelta);
1438 //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);
1439         if (nb_frames == 0){
1440             ++nb_frames_drop;
1441             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1442         }else if (nb_frames > 1) {
1443             nb_frames_dup += nb_frames - 1;
1444             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1445         }
1446     }else
1447         ost->sync_opts= lrintf(sync_ipts);
1448
1449     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1450     if (nb_frames <= 0)
1451         return;
1452
1453     do_video_resample(ost, ist, in_picture, &final_picture);
1454
1455     /* duplicates frame if needed */
1456     for(i=0;i<nb_frames;i++) {
1457         AVPacket pkt;
1458         av_init_packet(&pkt);
1459         pkt.stream_index= ost->index;
1460
1461         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1462             enc->codec->id == CODEC_ID_RAWVIDEO) {
1463             /* raw pictures are written as AVPicture structure to
1464                avoid any copies. We support temporarily the older
1465                method. */
1466             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1467             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1468             pkt.data= (uint8_t *)final_picture;
1469             pkt.size=  sizeof(AVPicture);
1470             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1471             pkt.flags |= AV_PKT_FLAG_KEY;
1472
1473             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1474         } else {
1475             AVFrame big_picture;
1476
1477             big_picture= *final_picture;
1478             /* better than nothing: use input picture interlaced
1479                settings */
1480             big_picture.interlaced_frame = in_picture->interlaced_frame;
1481             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1482                 if (ost->top_field_first == -1)
1483                     big_picture.top_field_first = in_picture->top_field_first;
1484                 else
1485                     big_picture.top_field_first = !!ost->top_field_first;
1486             }
1487
1488             /* handles same_quant here. This is not correct because it may
1489                not be a global option */
1490             big_picture.quality = quality;
1491             if (!enc->me_threshold)
1492                 big_picture.pict_type = 0;
1493 //            big_picture.pts = AV_NOPTS_VALUE;
1494             big_picture.pts= ost->sync_opts;
1495 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1496 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1497             if (ost->forced_kf_index < ost->forced_kf_count &&
1498                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1499                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1500                 ost->forced_kf_index++;
1501             }
1502             ret = avcodec_encode_video(enc,
1503                                        bit_buffer, bit_buffer_size,
1504                                        &big_picture);
1505             if (ret < 0) {
1506                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1507                 exit_program(1);
1508             }
1509
1510             if(ret>0){
1511                 pkt.data= bit_buffer;
1512                 pkt.size= ret;
1513                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1514                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1515 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1516    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1517    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1518
1519                 if(enc->coded_frame->key_frame)
1520                     pkt.flags |= AV_PKT_FLAG_KEY;
1521                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1522                 *frame_size = ret;
1523                 video_size += ret;
1524                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1525                 //        enc->frame_number-1, ret, enc->pict_type);
1526                 /* if two pass, output log */
1527                 if (ost->logfile && enc->stats_out) {
1528                     fprintf(ost->logfile, "%s", enc->stats_out);
1529                 }
1530             }
1531         }
1532         ost->sync_opts++;
1533         ost->frame_number++;
1534     }
1535 }
1536
1537 static double psnr(double d)
1538 {
1539     return -10.0*log(d)/log(10.0);
1540 }
1541
1542 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1543                            int frame_size)
1544 {
1545     AVCodecContext *enc;
1546     int frame_number;
1547     double ti1, bitrate, avg_bitrate;
1548
1549     /* this is executed just the first time do_video_stats is called */
1550     if (!vstats_file) {
1551         vstats_file = fopen(vstats_filename, "w");
1552         if (!vstats_file) {
1553             perror("fopen");
1554             exit_program(1);
1555         }
1556     }
1557
1558     enc = ost->st->codec;
1559     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1560         frame_number = ost->frame_number;
1561         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1562         if (enc->flags&CODEC_FLAG_PSNR)
1563             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1564
1565         fprintf(vstats_file,"f_size= %6d ", frame_size);
1566         /* compute pts value */
1567         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1568         if (ti1 < 0.01)
1569             ti1 = 0.01;
1570
1571         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1572         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1573         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1574             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1575         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1576     }
1577 }
1578
1579 static void print_report(OutputFile *output_files,
1580                          OutputStream *ost_table, int nb_ostreams,
1581                          int is_last_report, int64_t timer_start, int64_t cur_time)
1582 {
1583     char buf[1024];
1584     OutputStream *ost;
1585     AVFormatContext *oc;
1586     int64_t total_size;
1587     AVCodecContext *enc;
1588     int frame_number, vid, i;
1589     double bitrate;
1590     int64_t pts = INT64_MAX;
1591     static int64_t last_time = -1;
1592     static int qp_histogram[52];
1593     int hours, mins, secs, us;
1594
1595     if (!print_stats && !is_last_report)
1596         return;
1597
1598     if (!is_last_report) {
1599         if (last_time == -1) {
1600             last_time = cur_time;
1601             return;
1602         }
1603         if ((cur_time - last_time) < 500000)
1604             return;
1605         last_time = cur_time;
1606     }
1607
1608
1609     oc = output_files[0].ctx;
1610
1611     total_size = avio_size(oc->pb);
1612     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1613         total_size= avio_tell(oc->pb);
1614         if (total_size < 0)
1615             total_size = 0;
1616     }
1617
1618     buf[0] = '\0';
1619     vid = 0;
1620     for(i=0;i<nb_ostreams;i++) {
1621         float q = -1;
1622         ost = &ost_table[i];
1623         enc = ost->st->codec;
1624         if (!ost->stream_copy && enc->coded_frame)
1625             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1626         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1627             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1628         }
1629         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1630             float t = (cur_time-timer_start) / 1000000.0;
1631
1632             frame_number = ost->frame_number;
1633             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1634                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1635             if(is_last_report)
1636                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1637             if(qp_hist){
1638                 int j;
1639                 int qp = lrintf(q);
1640                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1641                     qp_histogram[qp]++;
1642                 for(j=0; j<32; j++)
1643                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1644             }
1645             if (enc->flags&CODEC_FLAG_PSNR){
1646                 int j;
1647                 double error, error_sum=0;
1648                 double scale, scale_sum=0;
1649                 char type[3]= {'Y','U','V'};
1650                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1651                 for(j=0; j<3; j++){
1652                     if(is_last_report){
1653                         error= enc->error[j];
1654                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1655                     }else{
1656                         error= enc->coded_frame->error[j];
1657                         scale= enc->width*enc->height*255.0*255.0;
1658                     }
1659                     if(j) scale/=4;
1660                     error_sum += error;
1661                     scale_sum += scale;
1662                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1663                 }
1664                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1665             }
1666             vid = 1;
1667         }
1668         /* compute min output value */
1669         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1670                                       ost->st->time_base, AV_TIME_BASE_Q));
1671     }
1672
1673     secs = pts / AV_TIME_BASE;
1674     us = pts % AV_TIME_BASE;
1675     mins = secs / 60;
1676     secs %= 60;
1677     hours = mins / 60;
1678     mins %= 60;
1679
1680     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1681
1682     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1683              "size=%8.0fkB time=", total_size / 1024.0);
1684     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1685              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1686              (100 * us) / AV_TIME_BASE);
1687     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1688              "bitrate=%6.1fkbits/s", bitrate);
1689
1690     if (nb_frames_dup || nb_frames_drop)
1691         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1692                 nb_frames_dup, nb_frames_drop);
1693
1694     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1695
1696     fflush(stderr);
1697
1698     if (is_last_report) {
1699         int64_t raw= audio_size + video_size + extra_size;
1700         av_log(NULL, AV_LOG_INFO, "\n");
1701         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1702                video_size/1024.0,
1703                audio_size/1024.0,
1704                extra_size/1024.0,
1705                100.0*(total_size - raw)/raw
1706         );
1707         if(video_size + audio_size + extra_size == 0){
1708             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1709         }
1710     }
1711 }
1712
1713 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1714 {
1715     int i, ret;
1716
1717     for (i = 0; i < nb_ostreams; i++) {
1718         OutputStream   *ost = &ost_table[i];
1719         AVCodecContext *enc = ost->st->codec;
1720         AVFormatContext *os = output_files[ost->file_index].ctx;
1721
1722         if (!ost->encoding_needed)
1723             continue;
1724
1725         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1726             continue;
1727         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1728             continue;
1729
1730         for(;;) {
1731             AVPacket pkt;
1732             int fifo_bytes;
1733             av_init_packet(&pkt);
1734             pkt.stream_index= ost->index;
1735
1736             switch (ost->st->codec->codec_type) {
1737             case AVMEDIA_TYPE_AUDIO:
1738                 fifo_bytes = av_fifo_size(ost->fifo);
1739                 ret = 0;
1740                 /* encode any samples remaining in fifo */
1741                 if (fifo_bytes > 0) {
1742                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1743                     int fs_tmp = enc->frame_size;
1744
1745                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1746                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1747                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1748                     } else { /* pad */
1749                         int frame_bytes = enc->frame_size*osize*enc->channels;
1750                         if (allocated_audio_buf_size < frame_bytes)
1751                             exit_program(1);
1752                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1753                     }
1754
1755                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1756                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1757                                               ost->st->time_base.num, enc->sample_rate);
1758                     enc->frame_size = fs_tmp;
1759                 }
1760                 if (ret <= 0) {
1761                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1762                 }
1763                 if (ret < 0) {
1764                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1765                     exit_program(1);
1766                 }
1767                 audio_size += ret;
1768                 pkt.flags |= AV_PKT_FLAG_KEY;
1769                 break;
1770             case AVMEDIA_TYPE_VIDEO:
1771                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1772                 if (ret < 0) {
1773                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1774                     exit_program(1);
1775                 }
1776                 video_size += ret;
1777                 if(enc->coded_frame && enc->coded_frame->key_frame)
1778                     pkt.flags |= AV_PKT_FLAG_KEY;
1779                 if (ost->logfile && enc->stats_out) {
1780                     fprintf(ost->logfile, "%s", enc->stats_out);
1781                 }
1782                 break;
1783             default:
1784                 ret=-1;
1785             }
1786
1787             if (ret <= 0)
1788                 break;
1789             pkt.data = bit_buffer;
1790             pkt.size = ret;
1791             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1792                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1793             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1794         }
1795     }
1796 }
1797
1798 /*
1799  * Check whether a packet from ist should be written into ost at this time
1800  */
1801 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1802 {
1803     OutputFile *of = &output_files[ost->file_index];
1804     int ist_index  = ist - input_streams;
1805
1806     if (ost->source_index != ist_index)
1807         return 0;
1808
1809     if (of->start_time && ist->pts < of->start_time)
1810         return 0;
1811
1812     if (of->recording_time != INT64_MAX &&
1813         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1814                       (AVRational){1, 1000000}) >= 0) {
1815         ost->is_past_recording_time = 1;
1816         return 0;
1817     }
1818
1819     return 1;
1820 }
1821
1822 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1823 {
1824     OutputFile *of = &output_files[ost->file_index];
1825     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1826     AVPicture pict;
1827     AVPacket opkt;
1828
1829     av_init_packet(&opkt);
1830
1831     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1832         !ost->copy_initial_nonkeyframes)
1833         return;
1834
1835     /* force the input stream PTS */
1836     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1837         audio_size += pkt->size;
1838     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1839         video_size += pkt->size;
1840         ost->sync_opts++;
1841     }
1842
1843     opkt.stream_index = ost->index;
1844     if (pkt->pts != AV_NOPTS_VALUE)
1845         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1846     else
1847         opkt.pts = AV_NOPTS_VALUE;
1848
1849     if (pkt->dts == AV_NOPTS_VALUE)
1850         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1851     else
1852         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1853     opkt.dts -= ost_tb_start_time;
1854
1855     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1856     opkt.flags    = pkt->flags;
1857
1858     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1859     if(   ost->st->codec->codec_id != CODEC_ID_H264
1860        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1861        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1862        ) {
1863         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1864             opkt.destruct = av_destruct_packet;
1865     } else {
1866         opkt.data = pkt->data;
1867         opkt.size = pkt->size;
1868     }
1869     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1870         /* store AVPicture in AVPacket, as expected by the output format */
1871         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1872         opkt.data = (uint8_t *)&pict;
1873         opkt.size = sizeof(AVPicture);
1874         opkt.flags |= AV_PKT_FLAG_KEY;
1875     }
1876
1877     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1878     ost->st->codec->frame_number++;
1879     ost->frame_number++;
1880     av_free_packet(&opkt);
1881 }
1882
1883 static void rate_emu_sleep(InputStream *ist)
1884 {
1885     if (input_files[ist->file_index].rate_emu) {
1886         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1887         int64_t now = av_gettime() - ist->start;
1888         if (pts > now)
1889             usleep(pts - now);
1890     }
1891 }
1892
1893 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1894 {
1895     AVFrame *decoded_frame;
1896     AVCodecContext *avctx = ist->st->codec;
1897     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1898     int i, ret;
1899
1900     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1901         return AVERROR(ENOMEM);
1902     else
1903         avcodec_get_frame_defaults(ist->decoded_frame);
1904     decoded_frame = ist->decoded_frame;
1905
1906     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1907     if (ret < 0) {
1908         return ret;
1909     }
1910
1911     if (!*got_output) {
1912         /* no audio frame */
1913         return ret;
1914     }
1915
1916     /* if the decoder provides a pts, use it instead of the last packet pts.
1917        the decoder could be delaying output by a packet or more. */
1918     if (decoded_frame->pts != AV_NOPTS_VALUE)
1919         ist->next_pts = decoded_frame->pts;
1920
1921     /* increment next_pts to use for the case where the input stream does not
1922        have timestamps or there are multiple frames in the packet */
1923     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1924                      avctx->sample_rate;
1925
1926     // preprocess audio (volume)
1927     if (audio_volume != 256) {
1928         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1929         void *samples = decoded_frame->data[0];
1930         switch (avctx->sample_fmt) {
1931         case AV_SAMPLE_FMT_U8:
1932         {
1933             uint8_t *volp = samples;
1934             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1935                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1936                 *volp++ = av_clip_uint8(v);
1937             }
1938             break;
1939         }
1940         case AV_SAMPLE_FMT_S16:
1941         {
1942             int16_t *volp = samples;
1943             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1944                 int v = ((*volp) * audio_volume + 128) >> 8;
1945                 *volp++ = av_clip_int16(v);
1946             }
1947             break;
1948         }
1949         case AV_SAMPLE_FMT_S32:
1950         {
1951             int32_t *volp = samples;
1952             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1953                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1954                 *volp++ = av_clipl_int32(v);
1955             }
1956             break;
1957         }
1958         case AV_SAMPLE_FMT_FLT:
1959         {
1960             float *volp = samples;
1961             float scale = audio_volume / 256.f;
1962             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1963                 *volp++ *= scale;
1964             }
1965             break;
1966         }
1967         case AV_SAMPLE_FMT_DBL:
1968         {
1969             double *volp = samples;
1970             double scale = audio_volume / 256.;
1971             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1972                 *volp++ *= scale;
1973             }
1974             break;
1975         }
1976         default:
1977             av_log(NULL, AV_LOG_FATAL,
1978                    "Audio volume adjustment on sample format %s is not supported.\n",
1979                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1980             exit_program(1);
1981         }
1982     }
1983
1984     rate_emu_sleep(ist);
1985
1986     for (i = 0; i < nb_output_streams; i++) {
1987         OutputStream *ost = &output_streams[i];
1988
1989         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1990             continue;
1991         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1992     }
1993
1994     return ret;
1995 }
1996
1997 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts, int64_t *pkt_dts)
1998 {
1999     AVFrame *decoded_frame, *filtered_frame = NULL;
2000     void *buffer_to_free = NULL;
2001     int i, ret = 0;
2002     float quality = 0;
2003 #if CONFIG_AVFILTER
2004     int frame_available = 1;
2005 #endif
2006     int duration=0;
2007     int64_t *best_effort_timestamp;
2008     AVRational *frame_sample_aspect;
2009
2010     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
2011         return AVERROR(ENOMEM);
2012     else
2013         avcodec_get_frame_defaults(ist->decoded_frame);
2014     decoded_frame = ist->decoded_frame;
2015     pkt->pts  = *pkt_pts;
2016     pkt->dts  = *pkt_dts;
2017     *pkt_pts  = AV_NOPTS_VALUE;
2018
2019     if (pkt->duration) {
2020         duration = av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2021     } else if(ist->st->codec->time_base.num != 0) {
2022         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2023         duration = ((int64_t)AV_TIME_BASE *
2024                           ist->st->codec->time_base.num * ticks) /
2025                           ist->st->codec->time_base.den;
2026     }
2027
2028     if(*pkt_dts != AV_NOPTS_VALUE && duration) {
2029         *pkt_dts += duration;
2030     }else
2031         *pkt_dts = AV_NOPTS_VALUE;
2032
2033     ret = avcodec_decode_video2(ist->st->codec,
2034                                 decoded_frame, got_output, pkt);
2035     if (ret < 0)
2036         return ret;
2037
2038     quality = same_quant ? decoded_frame->quality : 0;
2039     if (!*got_output) {
2040         /* no picture yet */
2041         return ret;
2042     }
2043
2044     best_effort_timestamp= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "best_effort_timestamp");
2045     if(*best_effort_timestamp != AV_NOPTS_VALUE)
2046         ist->next_pts = ist->pts = *best_effort_timestamp;
2047
2048     ist->next_pts += duration;
2049     pkt->size = 0;
2050
2051     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
2052
2053 #if CONFIG_AVFILTER
2054     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2055     for(i=0;i<nb_output_streams;i++) {
2056         OutputStream *ost = ost = &output_streams[i];
2057         if(check_output_constraints(ist, ost)){
2058             if (!frame_sample_aspect->num)
2059                 *frame_sample_aspect = ist->st->sample_aspect_ratio;
2060             decoded_frame->pts = ist->pts;
2061             if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER) {
2062                 FrameBuffer      *buf = decoded_frame->opaque;
2063                 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2064                                             decoded_frame->data, decoded_frame->linesize,
2065                                             AV_PERM_READ | AV_PERM_PRESERVE,
2066                                             ist->st->codec->width, ist->st->codec->height,
2067                                             ist->st->codec->pix_fmt);
2068
2069                 avfilter_copy_frame_props(fb, decoded_frame);
2070                 fb->pts                 = ist->pts;
2071                 fb->buf->priv           = buf;
2072                 fb->buf->free           = filter_release_buffer;
2073
2074                 buf->refcount++;
2075                 av_buffersrc_buffer(ost->input_video_filter, fb);
2076             } else
2077             if((av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE)) < 0){
2078                 av_log(0, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
2079                 exit_program(1);
2080             }
2081         }
2082     }
2083 #endif
2084
2085     rate_emu_sleep(ist);
2086
2087     for (i = 0; i < nb_output_streams; i++) {
2088         OutputStream *ost = &output_streams[i];
2089         int frame_size;
2090
2091         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2092             continue;
2093
2094 #if CONFIG_AVFILTER
2095         if (ost->input_video_filter) {
2096             frame_available = av_buffersink_poll_frame(ost->output_video_filter);
2097         }
2098         while (frame_available) {
2099             if (ost->output_video_filter) {
2100                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
2101                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0){
2102                     av_log(0, AV_LOG_WARNING, "AV Filter told us it has a frame available but failed to output one\n");
2103                     goto cont;
2104                 }
2105                 if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2106                     av_free(buffer_to_free);
2107                     return AVERROR(ENOMEM);
2108                 } else
2109                     avcodec_get_frame_defaults(ist->filtered_frame);
2110                 filtered_frame = ist->filtered_frame;
2111                 *filtered_frame= *decoded_frame; //for me_threshold
2112                 if (ost->picref) {
2113                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
2114                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2115                 }
2116             }
2117             if (ost->picref->video && !ost->frame_aspect_ratio)
2118                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
2119 #else
2120             filtered_frame = decoded_frame;
2121 #endif
2122
2123             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2124                          same_quant ? quality : ost->st->codec->global_quality);
2125             if (vstats_filename && frame_size)
2126                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2127 #if CONFIG_AVFILTER
2128             cont:
2129             frame_available = ost->output_video_filter && av_buffersink_poll_frame(ost->output_video_filter);
2130             avfilter_unref_buffer(ost->picref);
2131         }
2132 #endif
2133     }
2134
2135     av_free(buffer_to_free);
2136     return ret;
2137 }
2138
2139 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2140 {
2141     AVSubtitle subtitle;
2142     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2143                                           &subtitle, got_output, pkt);
2144     if (ret < 0)
2145         return ret;
2146     if (!*got_output)
2147         return ret;
2148
2149     rate_emu_sleep(ist);
2150
2151     for (i = 0; i < nb_output_streams; i++) {
2152         OutputStream *ost = &output_streams[i];
2153
2154         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2155             continue;
2156
2157         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2158     }
2159
2160     avsubtitle_free(&subtitle);
2161     return ret;
2162 }
2163
2164 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2165 static int output_packet(InputStream *ist,
2166                          OutputStream *ost_table, int nb_ostreams,
2167                          const AVPacket *pkt)
2168 {
2169     int ret = 0, i;
2170     int got_output;
2171     int64_t pkt_dts = AV_NOPTS_VALUE;
2172     int64_t pkt_pts = AV_NOPTS_VALUE;
2173
2174     AVPacket avpkt;
2175
2176     if (ist->next_pts == AV_NOPTS_VALUE)
2177         ist->next_pts = ist->pts;
2178
2179     if (pkt == NULL) {
2180         /* EOF handling */
2181         av_init_packet(&avpkt);
2182         avpkt.data = NULL;
2183         avpkt.size = 0;
2184         goto handle_eof;
2185     } else {
2186         avpkt = *pkt;
2187     }
2188
2189     if(pkt->dts != AV_NOPTS_VALUE){
2190         if(ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2191             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2192         pkt_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2193     }
2194     if(pkt->pts != AV_NOPTS_VALUE)
2195         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2196
2197     //while we have more to decode or while the decoder did output something on EOF
2198     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2199     handle_eof:
2200
2201         ist->pts = ist->next_pts;
2202
2203         if (avpkt.size && avpkt.size != pkt->size) {
2204             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2205                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2206             ist->showed_multi_packet_warning = 1;
2207         }
2208
2209         switch(ist->st->codec->codec_type) {
2210         case AVMEDIA_TYPE_AUDIO:
2211             ret = transcode_audio    (ist, &avpkt, &got_output);
2212             break;
2213         case AVMEDIA_TYPE_VIDEO:
2214             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts, &pkt_dts);
2215             break;
2216         case AVMEDIA_TYPE_SUBTITLE:
2217             ret = transcode_subtitles(ist, &avpkt, &got_output);
2218             break;
2219         default:
2220             return -1;
2221         }
2222
2223         if (ret < 0)
2224             return ret;
2225
2226         avpkt.dts=
2227         avpkt.pts= AV_NOPTS_VALUE;
2228
2229         // touch data and size only if not EOF
2230         if (pkt) {
2231             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2232                 ret = avpkt.size;
2233             avpkt.data += ret;
2234             avpkt.size -= ret;
2235         }
2236         if (!got_output) {
2237             continue;
2238         }
2239     }
2240
2241     /* handle stream copy */
2242     if (!ist->decoding_needed) {
2243         rate_emu_sleep(ist);
2244         ist->pts = ist->next_pts;
2245         switch (ist->st->codec->codec_type) {
2246         case AVMEDIA_TYPE_AUDIO:
2247             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2248                              ist->st->codec->sample_rate;
2249             break;
2250         case AVMEDIA_TYPE_VIDEO:
2251             if (pkt->duration) {
2252                 ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2253             } else if(ist->st->codec->time_base.num != 0) {
2254                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2255                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2256                                   ist->st->codec->time_base.num * ticks) /
2257                                   ist->st->codec->time_base.den;
2258             }
2259             break;
2260         }
2261     }
2262     for (i = 0; pkt && i < nb_ostreams; i++) {
2263         OutputStream *ost = &ost_table[i];
2264
2265         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2266             continue;
2267
2268         do_streamcopy(ist, ost, pkt);
2269     }
2270
2271     return 0;
2272 }
2273
2274 static void print_sdp(OutputFile *output_files, int n)
2275 {
2276     char sdp[2048];
2277     int i;
2278     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2279
2280     if (!avc)
2281         exit_program(1);
2282     for (i = 0; i < n; i++)
2283         avc[i] = output_files[i].ctx;
2284
2285     av_sdp_create(avc, n, sdp, sizeof(sdp));
2286     printf("SDP:\n%s\n", sdp);
2287     fflush(stdout);
2288     av_freep(&avc);
2289 }
2290
2291 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2292                              char *error, int error_len)
2293 {
2294     InputStream *ist = &input_streams[ist_index];
2295     if (ist->decoding_needed) {
2296         AVCodec *codec = ist->dec;
2297         if (!codec) {
2298             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2299                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2300             return AVERROR(EINVAL);
2301         }
2302
2303         ist->dr1 = codec->capabilities & CODEC_CAP_DR1;
2304         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
2305             ist->st->codec->get_buffer     = codec_get_buffer;
2306             ist->st->codec->release_buffer = codec_release_buffer;
2307             ist->st->codec->opaque         = ist;
2308         }
2309
2310         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2311             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2312                     ist->file_index, ist->st->index);
2313             return AVERROR(EINVAL);
2314         }
2315         assert_codec_experimental(ist->st->codec, 0);
2316         assert_avoptions(ist->opts);
2317     }
2318
2319     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;
2320     ist->next_pts = AV_NOPTS_VALUE;
2321     ist->is_start = 1;
2322
2323     return 0;
2324 }
2325
2326 static int transcode_init(OutputFile *output_files, int nb_output_files,
2327                           InputFile  *input_files,  int nb_input_files)
2328 {
2329     int ret = 0, i, j, k;
2330     AVFormatContext *oc;
2331     AVCodecContext *codec, *icodec;
2332     OutputStream *ost;
2333     InputStream *ist;
2334     char error[1024];
2335     int want_sdp = 1;
2336
2337     /* init framerate emulation */
2338     for (i = 0; i < nb_input_files; i++) {
2339         InputFile *ifile = &input_files[i];
2340         if (ifile->rate_emu)
2341             for (j = 0; j < ifile->nb_streams; j++)
2342                 input_streams[j + ifile->ist_index].start = av_gettime();
2343     }
2344
2345     /* output stream init */
2346     for (i = 0; i < nb_output_files; i++) {
2347         oc = output_files[i].ctx;
2348         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2349             av_dump_format(oc, i, oc->filename, 1);
2350             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2351             return AVERROR(EINVAL);
2352         }
2353     }
2354
2355     /* for each output stream, we compute the right encoding parameters */
2356     for (i = 0; i < nb_output_streams; i++) {
2357         ost = &output_streams[i];
2358         oc  = output_files[ost->file_index].ctx;
2359         ist = &input_streams[ost->source_index];
2360
2361         if (ost->attachment_filename)
2362             continue;
2363
2364         codec  = ost->st->codec;
2365         icodec = ist->st->codec;
2366
2367         ost->st->disposition          = ist->st->disposition;
2368         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2369         codec->chroma_sample_location = icodec->chroma_sample_location;
2370
2371         if (ost->stream_copy) {
2372             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2373
2374             if (extra_size > INT_MAX) {
2375                 return AVERROR(EINVAL);
2376             }
2377
2378             /* if stream_copy is selected, no need to decode or encode */
2379             codec->codec_id   = icodec->codec_id;
2380             codec->codec_type = icodec->codec_type;
2381
2382             if (!codec->codec_tag) {
2383                 if (!oc->oformat->codec_tag ||
2384                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2385                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2386                     codec->codec_tag = icodec->codec_tag;
2387             }
2388
2389             codec->bit_rate       = icodec->bit_rate;
2390             codec->rc_max_rate    = icodec->rc_max_rate;
2391             codec->rc_buffer_size = icodec->rc_buffer_size;
2392             codec->field_order    = icodec->field_order;
2393             codec->extradata      = av_mallocz(extra_size);
2394             if (!codec->extradata) {
2395                 return AVERROR(ENOMEM);
2396             }
2397             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2398             codec->extradata_size= icodec->extradata_size;
2399
2400             codec->time_base = ist->st->time_base;
2401             if(!strcmp(oc->oformat->name, "avi")) {
2402                 if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2403                                  && av_q2d(ist->st->time_base) < 1.0/500
2404                     || copy_tb==0){
2405                     codec->time_base = icodec->time_base;
2406                     codec->time_base.num *= icodec->ticks_per_frame;
2407                     codec->time_base.den *= 2;
2408                 }
2409             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2410                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2411                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2412             ) {
2413                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2414                                 && av_q2d(ist->st->time_base) < 1.0/500
2415                    || copy_tb==0){
2416                     codec->time_base = icodec->time_base;
2417                     codec->time_base.num *= icodec->ticks_per_frame;
2418                 }
2419             }
2420             av_reduce(&codec->time_base.num, &codec->time_base.den,
2421                         codec->time_base.num, codec->time_base.den, INT_MAX);
2422
2423             switch(codec->codec_type) {
2424             case AVMEDIA_TYPE_AUDIO:
2425                 if(audio_volume != 256) {
2426                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2427                     exit_program(1);
2428                 }
2429                 codec->channel_layout     = icodec->channel_layout;
2430                 codec->sample_rate        = icodec->sample_rate;
2431                 codec->channels           = icodec->channels;
2432                 codec->frame_size         = icodec->frame_size;
2433                 codec->audio_service_type = icodec->audio_service_type;
2434                 codec->block_align        = icodec->block_align;
2435                 break;
2436             case AVMEDIA_TYPE_VIDEO:
2437                 codec->pix_fmt            = icodec->pix_fmt;
2438                 codec->width              = icodec->width;
2439                 codec->height             = icodec->height;
2440                 codec->has_b_frames       = icodec->has_b_frames;
2441                 if (!codec->sample_aspect_ratio.num) {
2442                     codec->sample_aspect_ratio   =
2443                     ost->st->sample_aspect_ratio =
2444                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2445                         ist->st->codec->sample_aspect_ratio.num ?
2446                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2447                 }
2448                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2449                 break;
2450             case AVMEDIA_TYPE_SUBTITLE:
2451                 codec->width  = icodec->width;
2452                 codec->height = icodec->height;
2453                 break;
2454             case AVMEDIA_TYPE_DATA:
2455             case AVMEDIA_TYPE_ATTACHMENT:
2456                 break;
2457             default:
2458                 abort();
2459             }
2460         } else {
2461             if (!ost->enc)
2462                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2463
2464             ist->decoding_needed = 1;
2465             ost->encoding_needed = 1;
2466
2467             switch(codec->codec_type) {
2468             case AVMEDIA_TYPE_AUDIO:
2469                 ost->fifo = av_fifo_alloc(1024);
2470                 if (!ost->fifo) {
2471                     return AVERROR(ENOMEM);
2472                 }
2473                 if (!codec->sample_rate)
2474                     codec->sample_rate = icodec->sample_rate;
2475                 choose_sample_rate(ost->st, ost->enc);
2476                 codec->time_base = (AVRational){1, codec->sample_rate};
2477
2478                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2479                     codec->sample_fmt = icodec->sample_fmt;
2480                 choose_sample_fmt(ost->st, ost->enc);
2481
2482                 if (ost->audio_channels_mapped) {
2483                     /* the requested output channel is set to the number of
2484                      * -map_channel only if no -ac are specified */
2485                     if (!codec->channels) {
2486                         codec->channels       = ost->audio_channels_mapped;
2487                         codec->channel_layout = av_get_default_channel_layout(codec->channels);
2488                         if (!codec->channel_layout) {
2489                             av_log(NULL, AV_LOG_FATAL, "Unable to find an appropriate channel layout for requested number of channel\n");
2490                             exit_program(1);
2491                         }
2492                     }
2493                     /* fill unused channel mapping with -1 (which means a muted
2494                      * channel in case the number of output channels is bigger
2495                      * than the number of mapped channel) */
2496                     for (j = ost->audio_channels_mapped; j < FF_ARRAY_ELEMS(ost->audio_channels_map); j++)
2497                         ost->audio_channels_map[j] = -1;
2498                 } else if (!codec->channels) {
2499                     codec->channels = icodec->channels;
2500                     codec->channel_layout = icodec->channel_layout;
2501                 }
2502                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2503                     codec->channel_layout = 0;
2504
2505                 ost->audio_resample       = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2506                 ost->audio_resample      |=    codec->sample_fmt     != icodec->sample_fmt
2507                                             || codec->channel_layout != icodec->channel_layout;
2508                 icodec->request_channels  = codec->channels;
2509                 ost->resample_sample_fmt  = icodec->sample_fmt;
2510                 ost->resample_sample_rate = icodec->sample_rate;
2511                 ost->resample_channels    = icodec->channels;
2512                 break;
2513             case AVMEDIA_TYPE_VIDEO:
2514                 if (codec->pix_fmt == PIX_FMT_NONE)
2515                     codec->pix_fmt = icodec->pix_fmt;
2516                 choose_pixel_fmt(ost->st, ost->enc);
2517
2518                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2519                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2520                     exit_program(1);
2521                 }
2522
2523                 if (!codec->width || !codec->height) {
2524                     codec->width  = icodec->width;
2525                     codec->height = icodec->height;
2526                 }
2527
2528                 ost->video_resample = codec->width   != icodec->width  ||
2529                                       codec->height  != icodec->height ||
2530                                       codec->pix_fmt != icodec->pix_fmt;
2531                 if (ost->video_resample) {
2532                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2533                 }
2534
2535                 ost->resample_height  = icodec->height;
2536                 ost->resample_width   = icodec->width;
2537                 ost->resample_pix_fmt = icodec->pix_fmt;
2538
2539                 if (!ost->frame_rate.num)
2540                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2541                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2542                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2543                     ost->frame_rate = ost->enc->supported_framerates[idx];
2544                 }
2545                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2546                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2547                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2548                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2549                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2550                 }
2551                 for (j = 0; j < ost->forced_kf_count; j++)
2552                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2553                                                          AV_TIME_BASE_Q,
2554                                                          codec->time_base);
2555
2556 #if CONFIG_AVFILTER
2557                 if (configure_video_filters(ist, ost)) {
2558                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2559                     exit(1);
2560                 }
2561 #endif
2562                 break;
2563             case AVMEDIA_TYPE_SUBTITLE:
2564                 break;
2565             default:
2566                 abort();
2567                 break;
2568             }
2569             /* two pass mode */
2570             if (codec->codec_id != CODEC_ID_H264 &&
2571                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2572                 char logfilename[1024];
2573                 FILE *f;
2574
2575                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2576                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2577                          i);
2578                 if (codec->flags & CODEC_FLAG_PASS2) {
2579                     char  *logbuffer;
2580                     size_t logbuffer_size;
2581                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2582                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2583                                logfilename);
2584                         exit_program(1);
2585                     }
2586                     codec->stats_in = logbuffer;
2587                 }
2588                 if (codec->flags & CODEC_FLAG_PASS1) {
2589                     f = fopen(logfilename, "wb");
2590                     if (!f) {
2591                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2592                                logfilename, strerror(errno));
2593                         exit_program(1);
2594                     }
2595                     ost->logfile = f;
2596                 }
2597             }
2598         }
2599         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2600             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size (1664)*/
2601             int size        = codec->width * codec->height;
2602             bit_buffer_size = FFMAX(bit_buffer_size, 7*size + 10000);
2603         }
2604     }
2605
2606     if (!bit_buffer)
2607         bit_buffer = av_malloc(bit_buffer_size);
2608     if (!bit_buffer) {
2609         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2610                bit_buffer_size);
2611         return AVERROR(ENOMEM);
2612     }
2613
2614     /* open each encoder */
2615     for (i = 0; i < nb_output_streams; i++) {
2616         ost = &output_streams[i];
2617         if (ost->encoding_needed) {
2618             AVCodec      *codec = ost->enc;
2619             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2620             if (!codec) {
2621                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2622                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2623                 ret = AVERROR(EINVAL);
2624                 goto dump_format;
2625             }
2626             if (dec->subtitle_header) {
2627                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2628                 if (!ost->st->codec->subtitle_header) {
2629                     ret = AVERROR(ENOMEM);
2630                     goto dump_format;
2631                 }
2632                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2633                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2634             }
2635             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2636                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2637                         ost->file_index, ost->index);
2638                 ret = AVERROR(EINVAL);
2639                 goto dump_format;
2640             }
2641             assert_codec_experimental(ost->st->codec, 1);
2642             assert_avoptions(ost->opts);
2643             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2644                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2645                                              " It takes bits/s as argument, not kbits/s\n");
2646             extra_size += ost->st->codec->extradata_size;
2647
2648             if (ost->st->codec->me_threshold)
2649                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2650         }
2651     }
2652
2653     /* init input streams */
2654     for (i = 0; i < nb_input_streams; i++)
2655         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2656             goto dump_format;
2657
2658     /* discard unused programs */
2659     for (i = 0; i < nb_input_files; i++) {
2660         InputFile *ifile = &input_files[i];
2661         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2662             AVProgram *p = ifile->ctx->programs[j];
2663             int discard  = AVDISCARD_ALL;
2664
2665             for (k = 0; k < p->nb_stream_indexes; k++)
2666                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2667                     discard = AVDISCARD_DEFAULT;
2668                     break;
2669                 }
2670             p->discard = discard;
2671         }
2672     }
2673
2674     /* open files and write file headers */
2675     for (i = 0; i < nb_output_files; i++) {
2676         oc = output_files[i].ctx;
2677         oc->interrupt_callback = int_cb;
2678         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2679             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2680             ret = AVERROR(EINVAL);
2681             goto dump_format;
2682         }
2683 //        assert_avoptions(output_files[i].opts);
2684         if (strcmp(oc->oformat->name, "rtp")) {
2685             want_sdp = 0;
2686         }
2687     }
2688
2689  dump_format:
2690     /* dump the file output parameters - cannot be done before in case
2691        of stream copy */
2692     for (i = 0; i < nb_output_files; i++) {
2693         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2694     }
2695
2696     /* dump the stream mapping */
2697     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2698     for (i = 0; i < nb_output_streams; i++) {
2699         ost = &output_streams[i];
2700
2701         if (ost->attachment_filename) {
2702             /* an attached file */
2703             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2704                    ost->attachment_filename, ost->file_index, ost->index);
2705             continue;
2706         }
2707         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2708                input_streams[ost->source_index].file_index,
2709                input_streams[ost->source_index].st->index,
2710                ost->file_index,
2711                ost->index);
2712         if (ost->audio_channels_mapped) {
2713             av_log(NULL, AV_LOG_INFO, " [ch:");
2714             for (j = 0; j < ost->audio_channels_mapped; j++)
2715                 if (ost->audio_channels_map[j] == -1)
2716                     av_log(NULL, AV_LOG_INFO, " M");
2717                 else
2718                     av_log(NULL, AV_LOG_INFO, " %d", ost->audio_channels_map[j]);
2719             av_log(NULL, AV_LOG_INFO, "]");
2720         }
2721         if (ost->sync_ist != &input_streams[ost->source_index])
2722             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2723                    ost->sync_ist->file_index,
2724                    ost->sync_ist->st->index);
2725         if (ost->stream_copy)
2726             av_log(NULL, AV_LOG_INFO, " (copy)");
2727         else
2728             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2729                    input_streams[ost->source_index].dec->name : "?",
2730                    ost->enc ? ost->enc->name : "?");
2731         av_log(NULL, AV_LOG_INFO, "\n");
2732     }
2733
2734     if (ret) {
2735         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2736         return ret;
2737     }
2738
2739     if (want_sdp) {
2740         print_sdp(output_files, nb_output_files);
2741     }
2742
2743     return 0;
2744 }
2745
2746 /*
2747  * The following code is the main loop of the file converter
2748  */
2749 static int transcode(OutputFile *output_files, int nb_output_files,
2750                      InputFile  *input_files,  int nb_input_files)
2751 {
2752     int ret, i;
2753     AVFormatContext *is, *os;
2754     OutputStream *ost;
2755     InputStream *ist;
2756     uint8_t *no_packet;
2757     int no_packet_count=0;
2758     int64_t timer_start;
2759     int key;
2760
2761     if (!(no_packet = av_mallocz(nb_input_files)))
2762         exit_program(1);
2763
2764     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2765     if (ret < 0)
2766         goto fail;
2767
2768     if (!using_stdin) {
2769         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2770     }
2771
2772     timer_start = av_gettime();
2773
2774     for(; received_sigterm == 0;) {
2775         int file_index, ist_index;
2776         AVPacket pkt;
2777         int64_t ipts_min;
2778         double opts_min;
2779         int64_t cur_time= av_gettime();
2780
2781         ipts_min= INT64_MAX;
2782         opts_min= 1e100;
2783         /* if 'q' pressed, exits */
2784         if (!using_stdin) {
2785             static int64_t last_time;
2786             if (received_nb_signals)
2787                 break;
2788             /* read_key() returns 0 on EOF */
2789             if(cur_time - last_time >= 100000 && !run_as_daemon){
2790                 key =  read_key();
2791                 last_time = cur_time;
2792             }else
2793                 key = -1;
2794             if (key == 'q')
2795                 break;
2796             if (key == '+') av_log_set_level(av_log_get_level()+10);
2797             if (key == '-') av_log_set_level(av_log_get_level()-10);
2798             if (key == 's') qp_hist     ^= 1;
2799             if (key == 'h'){
2800                 if (do_hex_dump){
2801                     do_hex_dump = do_pkt_dump = 0;
2802                 } else if(do_pkt_dump){
2803                     do_hex_dump = 1;
2804                 } else
2805                     do_pkt_dump = 1;
2806                 av_log_set_level(AV_LOG_DEBUG);
2807             }
2808 #if CONFIG_AVFILTER
2809             if (key == 'c' || key == 'C'){
2810                 char buf[4096], target[64], command[256], arg[256] = {0};
2811                 double time;
2812                 int k, n = 0;
2813                 fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2814                 i = 0;
2815                 while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2816                     if (k > 0)
2817                         buf[i++] = k;
2818                 buf[i] = 0;
2819                 if (k > 0 &&
2820                     (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2821                     av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2822                            target, time, command, arg);
2823                     for (i = 0; i < nb_output_streams; i++) {
2824                         ost = &output_streams[i];
2825                         if (ost->graph) {
2826                             if (time < 0) {
2827                                 ret = avfilter_graph_send_command(ost->graph, target, command, arg, buf, sizeof(buf),
2828                                                                   key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2829                                 fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2830                             } else {
2831                                 ret = avfilter_graph_queue_command(ost->graph, target, command, arg, 0, time);
2832                             }
2833                         }
2834                     }
2835                 } else {
2836                     av_log(NULL, AV_LOG_ERROR,
2837                            "Parse error, at least 3 arguments were expected, "
2838                            "only %d given in string '%s'\n", n, buf);
2839                 }
2840             }
2841 #endif
2842             if (key == 'd' || key == 'D'){
2843                 int debug=0;
2844                 if(key == 'D') {
2845                     debug = input_streams[0].st->codec->debug<<1;
2846                     if(!debug) debug = 1;
2847                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2848                         debug += debug;
2849                 }else
2850                     if(scanf("%d", &debug)!=1)
2851                         fprintf(stderr,"error parsing debug value\n");
2852                 for(i=0;i<nb_input_streams;i++) {
2853                     input_streams[i].st->codec->debug = debug;
2854                 }
2855                 for(i=0;i<nb_output_streams;i++) {
2856                     ost = &output_streams[i];
2857                     ost->st->codec->debug = debug;
2858                 }
2859                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2860                 fprintf(stderr,"debug=%d\n", debug);
2861             }
2862             if (key == '?'){
2863                 fprintf(stderr, "key    function\n"
2864                                 "?      show this help\n"
2865                                 "+      increase verbosity\n"
2866                                 "-      decrease verbosity\n"
2867                                 "c      Send command to filtergraph\n"
2868                                 "D      cycle through available debug modes\n"
2869                                 "h      dump packets/hex press to cycle through the 3 states\n"
2870                                 "q      quit\n"
2871                                 "s      Show QP histogram\n"
2872                 );
2873             }
2874         }
2875
2876         /* select the stream that we must read now by looking at the
2877            smallest output pts */
2878         file_index = -1;
2879         for (i = 0; i < nb_output_streams; i++) {
2880             OutputFile *of;
2881             int64_t ipts;
2882             double  opts;
2883             ost = &output_streams[i];
2884             of = &output_files[ost->file_index];
2885             os = output_files[ost->file_index].ctx;
2886             ist = &input_streams[ost->source_index];
2887             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2888                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2889                 continue;
2890             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2891             ipts = ist->pts;
2892             if (!input_files[ist->file_index].eof_reached){
2893                 if(ipts < ipts_min) {
2894                     ipts_min = ipts;
2895                     if(input_sync ) file_index = ist->file_index;
2896                 }
2897                 if(opts < opts_min) {
2898                     opts_min = opts;
2899                     if(!input_sync) file_index = ist->file_index;
2900                 }
2901             }
2902             if (ost->frame_number >= ost->max_frames) {
2903                 int j;
2904                 for (j = 0; j < of->ctx->nb_streams; j++)
2905                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2906                 continue;
2907             }
2908         }
2909         /* if none, if is finished */
2910         if (file_index < 0) {
2911             if(no_packet_count){
2912                 no_packet_count=0;
2913                 memset(no_packet, 0, nb_input_files);
2914                 usleep(10000);
2915                 continue;
2916             }
2917             break;
2918         }
2919
2920         /* read a frame from it and output it in the fifo */
2921         is = input_files[file_index].ctx;
2922         ret= av_read_frame(is, &pkt);
2923         if(ret == AVERROR(EAGAIN)){
2924             no_packet[file_index]=1;
2925             no_packet_count++;
2926             continue;
2927         }
2928         if (ret < 0) {
2929             input_files[file_index].eof_reached = 1;
2930             if (opt_shortest)
2931                 break;
2932             else
2933                 continue;
2934         }
2935
2936         no_packet_count=0;
2937         memset(no_packet, 0, nb_input_files);
2938
2939         if (do_pkt_dump) {
2940             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2941                              is->streams[pkt.stream_index]);
2942         }
2943         /* the following test is needed in case new streams appear
2944            dynamically in stream : we ignore them */
2945         if (pkt.stream_index >= input_files[file_index].nb_streams)
2946             goto discard_packet;
2947         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2948         ist = &input_streams[ist_index];
2949         if (ist->discard)
2950             goto discard_packet;
2951
2952         if (pkt.dts != AV_NOPTS_VALUE)
2953             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2954         if (pkt.pts != AV_NOPTS_VALUE)
2955             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2956
2957         if(pkt.pts != AV_NOPTS_VALUE)
2958             pkt.pts *= ist->ts_scale;
2959         if(pkt.dts != AV_NOPTS_VALUE)
2960             pkt.dts *= ist->ts_scale;
2961
2962 //        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);
2963         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2964             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2965             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2966             int64_t delta= pkt_dts - ist->next_pts;
2967             if((delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2968                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2969                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2970                 pkt_dts+1<ist->pts)&& !copy_ts){
2971                 input_files[ist->file_index].ts_offset -= delta;
2972                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2973                        delta, input_files[ist->file_index].ts_offset);
2974                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2975                 if(pkt.pts != AV_NOPTS_VALUE)
2976                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2977             }
2978         }
2979
2980         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2981         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2982
2983             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2984                    ist->file_index, ist->st->index);
2985             if (exit_on_error)
2986                 exit_program(1);
2987             av_free_packet(&pkt);
2988             continue;
2989         }
2990
2991     discard_packet:
2992         av_free_packet(&pkt);
2993
2994         /* dump report by using the output first video and audio streams */
2995         print_report(output_files, output_streams, nb_output_streams, 0, timer_start, cur_time);
2996     }
2997
2998     /* at the end of stream, we must flush the decoder buffers */
2999     for (i = 0; i < nb_input_streams; i++) {
3000         ist = &input_streams[i];
3001         if (ist->decoding_needed) {
3002             output_packet(ist, output_streams, nb_output_streams, NULL);
3003         }
3004     }
3005     flush_encoders(output_streams, nb_output_streams);
3006
3007     term_exit();
3008
3009     /* write the trailer if needed and close file */
3010     for(i=0;i<nb_output_files;i++) {
3011         os = output_files[i].ctx;
3012         av_write_trailer(os);
3013     }
3014
3015     /* dump report by using the first video and audio streams */
3016     print_report(output_files, output_streams, nb_output_streams, 1, timer_start, av_gettime());
3017
3018     /* close each encoder */
3019     for (i = 0; i < nb_output_streams; i++) {
3020         ost = &output_streams[i];
3021         if (ost->encoding_needed) {
3022             av_freep(&ost->st->codec->stats_in);
3023             avcodec_close(ost->st->codec);
3024         }
3025 #if CONFIG_AVFILTER
3026         avfilter_graph_free(&ost->graph);
3027 #endif
3028     }
3029
3030     /* close each decoder */
3031     for (i = 0; i < nb_input_streams; i++) {
3032         ist = &input_streams[i];
3033         if (ist->decoding_needed) {
3034             avcodec_close(ist->st->codec);
3035         }
3036     }
3037
3038     /* finished ! */
3039     ret = 0;
3040
3041  fail:
3042     av_freep(&bit_buffer);
3043     av_freep(&no_packet);
3044
3045     if (output_streams) {
3046         for (i = 0; i < nb_output_streams; i++) {
3047             ost = &output_streams[i];
3048             if (ost) {
3049                 if (ost->stream_copy)
3050                     av_freep(&ost->st->codec->extradata);
3051                 if (ost->logfile) {
3052                     fclose(ost->logfile);
3053                     ost->logfile = NULL;
3054                 }
3055                 av_fifo_free(ost->fifo); /* works even if fifo is not
3056                                              initialized but set to zero */
3057                 av_freep(&ost->st->codec->subtitle_header);
3058                 av_free(ost->resample_frame.data[0]);
3059                 av_free(ost->forced_kf_pts);
3060                 if (ost->video_resample)
3061                     sws_freeContext(ost->img_resample_ctx);
3062                 swr_free(&ost->swr);
3063                 av_dict_free(&ost->opts);
3064             }
3065         }
3066     }
3067     return ret;
3068 }
3069
3070 static int opt_frame_crop(const char *opt, const char *arg)
3071 {
3072     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the crop filter instead\n", opt);
3073     return AVERROR(EINVAL);
3074 }
3075
3076 static int opt_pad(const char *opt, const char *arg)
3077 {
3078     av_log(NULL, AV_LOG_FATAL, "Option '%s' has been removed, use the pad filter instead\n", opt);
3079     return -1;
3080 }
3081
3082 static double parse_frame_aspect_ratio(const char *arg)
3083 {
3084     int x = 0, y = 0;
3085     double ar = 0;
3086     const char *p;
3087     char *end;
3088
3089     p = strchr(arg, ':');
3090     if (p) {
3091         x = strtol(arg, &end, 10);
3092         if (end == p)
3093             y = strtol(end+1, &end, 10);
3094         if (x > 0 && y > 0)
3095             ar = (double)x / (double)y;
3096     } else
3097         ar = strtod(arg, NULL);
3098
3099     if (!ar) {
3100         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
3101         exit_program(1);
3102     }
3103     return ar;
3104 }
3105
3106 static int opt_video_channel(const char *opt, const char *arg)
3107 {
3108     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -channel.\n");
3109     return opt_default("channel", arg);
3110 }
3111
3112 static int opt_video_standard(const char *opt, const char *arg)
3113 {
3114     av_log(NULL, AV_LOG_WARNING, "This option is deprecated, use -standard.\n");
3115     return opt_default("standard", arg);
3116 }
3117
3118 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
3119 {
3120     audio_codec_name = arg;
3121     return parse_option(o, "codec:a", arg, options);
3122 }
3123
3124 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
3125 {
3126     video_codec_name = arg;
3127     return parse_option(o, "codec:v", arg, options);
3128 }
3129
3130 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
3131 {
3132     subtitle_codec_name = arg;
3133     return parse_option(o, "codec:s", arg, options);
3134 }
3135
3136 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
3137 {
3138     return parse_option(o, "codec:d", arg, options);
3139 }
3140
3141 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
3142 {
3143     StreamMap *m = NULL;
3144     int i, negative = 0, file_idx;
3145     int sync_file_idx = -1, sync_stream_idx;
3146     char *p, *sync;
3147     char *map;
3148
3149     if (*arg == '-') {
3150         negative = 1;
3151         arg++;
3152     }
3153     map = av_strdup(arg);
3154
3155     /* parse sync stream first, just pick first matching stream */
3156     if (sync = strchr(map, ',')) {
3157         *sync = 0;
3158         sync_file_idx = strtol(sync + 1, &sync, 0);
3159         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
3160             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
3161             exit_program(1);
3162         }
3163         if (*sync)
3164             sync++;
3165         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
3166             if (check_stream_specifier(input_files[sync_file_idx].ctx,
3167                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
3168                 sync_stream_idx = i;
3169                 break;
3170             }
3171         if (i == input_files[sync_file_idx].nb_streams) {
3172             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
3173                                        "match any streams.\n", arg);
3174             exit_program(1);
3175         }
3176     }
3177
3178
3179     file_idx = strtol(map, &p, 0);
3180     if (file_idx >= nb_input_files || file_idx < 0) {
3181         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
3182         exit_program(1);
3183     }
3184     if (negative)
3185         /* disable some already defined maps */
3186         for (i = 0; i < o->nb_stream_maps; i++) {
3187             m = &o->stream_maps[i];
3188             if (file_idx == m->file_index &&
3189                 check_stream_specifier(input_files[m->file_index].ctx,
3190                                        input_files[m->file_index].ctx->streams[m->stream_index],
3191                                        *p == ':' ? p + 1 : p) > 0)
3192                 m->disabled = 1;
3193         }
3194     else
3195         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3196             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3197                         *p == ':' ? p + 1 : p) <= 0)
3198                 continue;
3199             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3200                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3201             m = &o->stream_maps[o->nb_stream_maps - 1];
3202
3203             m->file_index   = file_idx;
3204             m->stream_index = i;
3205
3206             if (sync_file_idx >= 0) {
3207                 m->sync_file_index   = sync_file_idx;
3208                 m->sync_stream_index = sync_stream_idx;
3209             } else {
3210                 m->sync_file_index   = file_idx;
3211                 m->sync_stream_index = i;
3212             }
3213         }
3214
3215     if (!m) {
3216         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3217         exit_program(1);
3218     }
3219
3220     av_freep(&map);
3221     return 0;
3222 }
3223
3224 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3225 {
3226     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3227                                 &o->nb_attachments, o->nb_attachments + 1);
3228     o->attachments[o->nb_attachments - 1] = arg;
3229     return 0;
3230 }
3231
3232 static int opt_map_channel(OptionsContext *o, const char *opt, const char *arg)
3233 {
3234     int n;
3235     AVStream *st;
3236     AudioChannelMap *m;
3237
3238     o->audio_channel_maps =
3239         grow_array(o->audio_channel_maps, sizeof(*o->audio_channel_maps),
3240                    &o->nb_audio_channel_maps, o->nb_audio_channel_maps + 1);
3241     m = &o->audio_channel_maps[o->nb_audio_channel_maps - 1];
3242
3243     /* muted channel syntax */
3244     n = sscanf(arg, "%d:%d.%d", &m->channel_idx, &m->ofile_idx, &m->ostream_idx);
3245     if ((n == 1 || n == 3) && m->channel_idx == -1) {
3246         m->file_idx = m->stream_idx = -1;
3247         if (n == 1)
3248             m->ofile_idx = m->ostream_idx = -1;
3249         return 0;
3250     }
3251
3252     /* normal syntax */
3253     n = sscanf(arg, "%d.%d.%d:%d.%d",
3254                &m->file_idx,  &m->stream_idx, &m->channel_idx,
3255                &m->ofile_idx, &m->ostream_idx);
3256
3257     if (n != 3 && n != 5) {
3258         av_log(NULL, AV_LOG_FATAL, "Syntax error, mapchan usage: "
3259                "[file.stream.channel|-1][:syncfile:syncstream]\n");
3260         exit_program(1);
3261     }
3262
3263     if (n != 5) // only file.stream.channel specified
3264         m->ofile_idx = m->ostream_idx = -1;
3265
3266     /* check input */
3267     if (m->file_idx < 0 || m->file_idx >= nb_input_files) {
3268         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file index: %d\n",
3269                m->file_idx);
3270         exit_program(1);
3271     }
3272     if (m->stream_idx < 0 ||
3273         m->stream_idx >= input_files[m->file_idx].nb_streams) {
3274         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid input file stream index #%d.%d\n",
3275                m->file_idx, m->stream_idx);
3276         exit_program(1);
3277     }
3278     st = input_files[m->file_idx].ctx->streams[m->stream_idx];
3279     if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
3280         av_log(NULL, AV_LOG_FATAL, "mapchan: stream #%d.%d is not an audio stream.\n",
3281                m->file_idx, m->stream_idx);
3282         exit_program(1);
3283     }
3284     if (m->channel_idx < 0 || m->channel_idx >= st->codec->channels) {
3285         av_log(NULL, AV_LOG_FATAL, "mapchan: invalid audio channel #%d.%d.%d\n",
3286                m->file_idx, m->stream_idx, m->channel_idx);
3287         exit_program(1);
3288     }
3289     return 0;
3290 }
3291
3292 /**
3293  * Parse a metadata specifier in arg.
3294  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3295  * @param index for type c/p, chapter/program index is written here
3296  * @param stream_spec for type s, the stream specifier is written here
3297  */
3298 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3299 {
3300     if (*arg) {
3301         *type = *arg;
3302         switch (*arg) {
3303         case 'g':
3304             break;
3305         case 's':
3306             if (*(++arg) && *arg != ':') {
3307                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3308                 exit_program(1);
3309             }
3310             *stream_spec = *arg == ':' ? arg + 1 : "";
3311             break;
3312         case 'c':
3313         case 'p':
3314             if (*(++arg) == ':')
3315                 *index = strtol(++arg, NULL, 0);
3316             break;
3317         default:
3318             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3319             exit_program(1);
3320         }
3321     } else
3322         *type = 'g';
3323 }
3324
3325 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3326 {
3327     AVDictionary **meta_in = NULL;
3328     AVDictionary **meta_out;
3329     int i, ret = 0;
3330     char type_in, type_out;
3331     const char *istream_spec = NULL, *ostream_spec = NULL;
3332     int idx_in = 0, idx_out = 0;
3333
3334     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3335     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3336
3337     if (type_in == 'g' || type_out == 'g')
3338         o->metadata_global_manual = 1;
3339     if (type_in == 's' || type_out == 's')
3340         o->metadata_streams_manual = 1;
3341     if (type_in == 'c' || type_out == 'c')
3342         o->metadata_chapters_manual = 1;
3343
3344 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3345     if ((index) < 0 || (index) >= (nb_elems)) {\
3346         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3347                 (desc), (index));\
3348         exit_program(1);\
3349     }
3350
3351 #define SET_DICT(type, meta, context, index)\
3352         switch (type) {\
3353         case 'g':\
3354             meta = &context->metadata;\
3355             break;\
3356         case 'c':\
3357             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3358             meta = &context->chapters[index]->metadata;\
3359             break;\
3360         case 'p':\
3361             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3362             meta = &context->programs[index]->metadata;\
3363             break;\
3364         }\
3365
3366     SET_DICT(type_in, meta_in, ic, idx_in);
3367     SET_DICT(type_out, meta_out, oc, idx_out);
3368
3369     /* for input streams choose first matching stream */
3370     if (type_in == 's') {
3371         for (i = 0; i < ic->nb_streams; i++) {
3372             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3373                 meta_in = &ic->streams[i]->metadata;
3374                 break;
3375             } else if (ret < 0)
3376                 exit_program(1);
3377         }
3378         if (!meta_in) {
3379             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3380             exit_program(1);
3381         }
3382     }
3383
3384     if (type_out == 's') {
3385         for (i = 0; i < oc->nb_streams; i++) {
3386             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3387                 meta_out = &oc->streams[i]->metadata;
3388                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3389             } else if (ret < 0)
3390                 exit_program(1);
3391         }
3392     } else
3393         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3394
3395     return 0;
3396 }
3397
3398 static int opt_recording_timestamp(OptionsContext *o, const char *opt, const char *arg)
3399 {
3400     char buf[128];
3401     int64_t recording_timestamp = parse_time_or_die(opt, arg, 0) / 1E6;
3402     struct tm time = *gmtime((time_t*)&recording_timestamp);
3403     strftime(buf, sizeof(buf), "creation_time=%FT%T%z", &time);
3404     parse_option(o, "metadata", buf, options);
3405
3406     av_log(NULL, AV_LOG_WARNING, "%s is deprecated, set the 'creation_time' metadata "
3407                                  "tag instead.\n", opt);
3408     return 0;
3409 }
3410
3411 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3412 {
3413     const char *codec_string = encoder ? "encoder" : "decoder";
3414     AVCodec *codec;
3415
3416     codec = encoder ?
3417         avcodec_find_encoder_by_name(name) :
3418         avcodec_find_decoder_by_name(name);
3419     if(!codec) {
3420         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3421         exit_program(1);
3422     }
3423     if(codec->type != type) {
3424         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3425         exit_program(1);
3426     }
3427     return codec;
3428 }
3429
3430 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3431 {
3432     char *codec_name = NULL;
3433
3434     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3435     if (codec_name) {
3436         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3437         st->codec->codec_id = codec->id;
3438         return codec;
3439     } else
3440         return avcodec_find_decoder(st->codec->codec_id);
3441 }
3442
3443 /**
3444  * Add all the streams from the given input file to the global
3445  * list of input streams.
3446  */
3447 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3448 {
3449     int i, rfps, rfps_base;
3450     char *next, *codec_tag = NULL;
3451
3452     for (i = 0; i < ic->nb_streams; i++) {
3453         AVStream *st = ic->streams[i];
3454         AVCodecContext *dec = st->codec;
3455         InputStream *ist;
3456
3457         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3458         ist = &input_streams[nb_input_streams - 1];
3459         ist->st = st;
3460         ist->file_index = nb_input_files;
3461         ist->discard = 1;
3462         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3463
3464         ist->ts_scale = 1.0;
3465         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3466
3467         MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, ic, st);
3468         if (codec_tag) {
3469             uint32_t tag = strtol(codec_tag, &next, 0);
3470             if (*next)
3471                 tag = AV_RL32(codec_tag);
3472             st->codec->codec_tag = tag;
3473         }
3474
3475         ist->dec = choose_decoder(o, ic, st);
3476
3477         switch (dec->codec_type) {
3478         case AVMEDIA_TYPE_AUDIO:
3479             if(!ist->dec)
3480                 ist->dec = avcodec_find_decoder(dec->codec_id);
3481             if(o->audio_disable)
3482                 st->discard= AVDISCARD_ALL;
3483             break;
3484         case AVMEDIA_TYPE_VIDEO:
3485             if(!ist->dec)
3486                 ist->dec = avcodec_find_decoder(dec->codec_id);
3487             rfps      = ic->streams[i]->r_frame_rate.num;
3488             rfps_base = ic->streams[i]->r_frame_rate.den;
3489             if (dec->lowres) {
3490                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3491             }
3492
3493             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3494
3495                 av_log(NULL, AV_LOG_INFO,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
3496                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3497                        (float)rfps / rfps_base, rfps, rfps_base);
3498             }
3499
3500             if (o->video_disable)
3501                 st->discard= AVDISCARD_ALL;
3502             else if(video_discard)
3503                 st->discard= video_discard;
3504             break;
3505         case AVMEDIA_TYPE_DATA:
3506             if (o->data_disable)
3507                 st->discard= AVDISCARD_ALL;
3508             break;
3509         case AVMEDIA_TYPE_SUBTITLE:
3510             if(!ist->dec)
3511                 ist->dec = avcodec_find_decoder(dec->codec_id);
3512             if(o->subtitle_disable)
3513                 st->discard = AVDISCARD_ALL;
3514             break;
3515         case AVMEDIA_TYPE_ATTACHMENT:
3516         case AVMEDIA_TYPE_UNKNOWN:
3517             break;
3518         default:
3519             abort();
3520         }
3521     }
3522 }
3523
3524 static void assert_file_overwrite(const char *filename)
3525 {
3526     if ((!file_overwrite || no_file_overwrite) &&
3527         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3528          av_strstart(filename, "file:", NULL))) {
3529         if (avio_check(filename, 0) == 0) {
3530             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3531                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3532                 fflush(stderr);
3533                 term_exit();
3534                 signal(SIGINT, SIG_DFL);
3535                 if (!read_yesno()) {
3536                     av_log(0, AV_LOG_FATAL, "Not overwriting - exiting\n");
3537                     exit_program(1);
3538                 }
3539                 term_init();
3540             }
3541             else {
3542                 av_log(0, AV_LOG_FATAL, "File '%s' already exists. Exiting.\n", filename);
3543                 exit_program(1);
3544             }
3545         }
3546     }
3547 }
3548
3549 static void dump_attachment(AVStream *st, const char *filename)
3550 {
3551     int ret;
3552     AVIOContext *out = NULL;
3553     AVDictionaryEntry *e;
3554
3555     if (!st->codec->extradata_size) {
3556         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3557                nb_input_files - 1, st->index);
3558         return;
3559     }
3560     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3561         filename = e->value;
3562     if (!*filename) {
3563         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3564                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3565         exit_program(1);
3566     }
3567
3568     assert_file_overwrite(filename);
3569
3570     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3571         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3572                filename);
3573         exit_program(1);
3574     }
3575
3576     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3577     avio_flush(out);
3578     avio_close(out);
3579 }
3580
3581 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3582 {
3583     AVFormatContext *ic;
3584     AVInputFormat *file_iformat = NULL;
3585     int err, i, ret;
3586     int64_t timestamp;
3587     uint8_t buf[128];
3588     AVDictionary **opts;
3589     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3590
3591     if (o->format) {
3592         if (!(file_iformat = av_find_input_format(o->format))) {
3593             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3594             exit_program(1);
3595         }
3596     }
3597
3598     if (!strcmp(filename, "-"))
3599         filename = "pipe:";
3600
3601     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3602                     !strcmp(filename, "/dev/stdin");
3603
3604     /* get default parameters from command line */
3605     ic = avformat_alloc_context();
3606     if (!ic) {
3607         print_error(filename, AVERROR(ENOMEM));
3608         exit_program(1);
3609     }
3610     if (o->nb_audio_sample_rate) {
3611         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3612         av_dict_set(&format_opts, "sample_rate", buf, 0);
3613     }
3614     if (o->nb_audio_channels) {
3615         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3616         av_dict_set(&format_opts, "channels", buf, 0);
3617     }
3618     if (o->nb_frame_rates) {
3619         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3620     }
3621     if (o->nb_frame_sizes) {
3622         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3623     }
3624     if (o->nb_frame_pix_fmts)
3625         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3626
3627     ic->video_codec_id   = video_codec_name ?
3628         find_codec_or_die(video_codec_name   , AVMEDIA_TYPE_VIDEO   , 0)->id : CODEC_ID_NONE;
3629     ic->audio_codec_id   = audio_codec_name ?
3630         find_codec_or_die(audio_codec_name   , AVMEDIA_TYPE_AUDIO   , 0)->id : CODEC_ID_NONE;
3631     ic->subtitle_codec_id= subtitle_codec_name ?
3632         find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0)->id : CODEC_ID_NONE;
3633     ic->flags |= AVFMT_FLAG_NONBLOCK;
3634     ic->interrupt_callback = int_cb;
3635
3636     if (loop_input) {
3637         av_log(NULL, AV_LOG_WARNING,
3638             "-loop_input is deprecated, use -loop 1\n"
3639             "Note, both loop options only work with -f image2\n"
3640         );
3641         ic->loop_input = loop_input;
3642     }
3643
3644     /* open the input file with generic avformat function */
3645     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3646     if (err < 0) {
3647         print_error(filename, err);
3648         exit_program(1);
3649     }
3650     assert_avoptions(format_opts);
3651
3652     /* apply forced codec ids */
3653     for (i = 0; i < ic->nb_streams; i++)
3654         choose_decoder(o, ic, ic->streams[i]);
3655
3656     /* Set AVCodecContext options for avformat_find_stream_info */
3657     opts = setup_find_stream_info_opts(ic, codec_opts);
3658     orig_nb_streams = ic->nb_streams;
3659
3660     /* If not enough info to get the stream parameters, we decode the
3661        first frames to get it. (used in mpeg case for example) */
3662     ret = avformat_find_stream_info(ic, opts);
3663     if (ret < 0) {
3664         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3665         avformat_close_input(&ic);
3666         exit_program(1);
3667     }
3668