Do not fail when decoding invalid v410 files with odd width.
[ffmpeg.git] / avconv.c
1 /*
2  * ffmpeg main
3  * Copyright (c) 2000-2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 #include "libavformat/ffm.h" // not public API
51
52 #if CONFIG_AVFILTER
53 # include "libavfilter/avcodec.h"
54 # include "libavfilter/avfilter.h"
55 # include "libavfilter/avfiltergraph.h"
56 # include "libavfilter/buffersink.h"
57 # include "libavfilter/buffersrc.h"
58 # include "libavfilter/vsrc_buffer.h"
59 #endif
60
61 #if HAVE_SYS_RESOURCE_H
62 #include <sys/types.h>
63 #include <sys/time.h>
64 #include <sys/resource.h>
65 #elif HAVE_GETPROCESSTIMES
66 #include <windows.h>
67 #endif
68 #if HAVE_GETPROCESSMEMORYINFO
69 #include <windows.h>
70 #include <psapi.h>
71 #endif
72
73 #if HAVE_SYS_SELECT_H
74 #include <sys/select.h>
75 #endif
76
77 #if HAVE_TERMIOS_H
78 #include <fcntl.h>
79 #include <sys/ioctl.h>
80 #include <sys/time.h>
81 #include <termios.h>
82 #elif HAVE_KBHIT
83 #include <conio.h>
84 #endif
85 #include <time.h>
86
87 #include "cmdutils.h"
88
89 #include "libavutil/avassert.h"
90
91 const char program_name[] = "avconv";
92 const int program_birth_year = 2000;
93
94 /* select an input stream for an output stream */
95 typedef struct StreamMap {
96     int disabled;           /** 1 is this mapping is disabled by a negative map */
97     int file_index;
98     int stream_index;
99     int sync_file_index;
100     int sync_stream_index;
101 } StreamMap;
102
103 /**
104  * select an input file for an output file
105  */
106 typedef struct MetadataMap {
107     int  file;      ///< file index
108     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
109     int  index;     ///< stream/chapter/program number
110 } MetadataMap;
111
112 static const OptionDef options[];
113
114 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
115
116 static int frame_bits_per_raw_sample = 0;
117 static int video_discard = 0;
118 static int same_quant = 0;
119 static int do_deinterlace = 0;
120 static int intra_dc_precision = 8;
121 static int qp_hist = 0;
122
123 static int file_overwrite = 0;
124 static int no_file_overwrite = 0;
125 static int do_benchmark = 0;
126 static int do_hex_dump = 0;
127 static int do_pkt_dump = 0;
128 static int do_pass = 0;
129 static const char *pass_logfilename_prefix;
130 static int video_sync_method= -1;
131 static int audio_sync_method= 0;
132 static float audio_drift_threshold= 0.1;
133 static int copy_ts= 0;
134 static int copy_tb = 1;
135 static int opt_shortest = 0;
136 static char *vstats_filename;
137 static FILE *vstats_file;
138
139 static int audio_volume = 256;
140
141 static int exit_on_error = 0;
142 static int using_stdin = 0;
143 static int run_as_daemon  = 0;
144 static int q_pressed = 0;
145 static int64_t video_size = 0;
146 static int64_t audio_size = 0;
147 static int64_t extra_size = 0;
148 static int nb_frames_dup = 0;
149 static int nb_frames_drop = 0;
150 static int input_sync;
151
152 static float dts_delta_threshold = 10;
153
154 static int print_stats = 1;
155
156 static uint8_t *audio_buf;
157 static uint8_t *audio_out;
158 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
159
160 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
161
162 typedef struct FrameBuffer {
163     uint8_t *base[4];
164     uint8_t *data[4];
165     int  linesize[4];
166
167     int h, w;
168     enum PixelFormat pix_fmt;
169
170     int refcount;
171     struct InputStream *ist;
172     struct FrameBuffer *next;
173 } FrameBuffer;
174
175 typedef struct InputStream {
176     int file_index;
177     AVStream *st;
178     int discard;             /* true if stream data should be discarded */
179     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
180     AVCodec *dec;
181     AVFrame *decoded_frame;
182     AVFrame *filtered_frame;
183
184     int64_t       start;     /* time when read started */
185     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
186                                 is not defined */
187     int64_t       pts;       /* current pts */
188     double ts_scale;
189     int is_start;            /* is 1 at the start and after a discontinuity */
190     int showed_multi_packet_warning;
191     AVDictionary *opts;
192
193     /* a pool of free buffers for decoded data */
194     FrameBuffer *buffer_pool;
195 } InputStream;
196
197 typedef struct InputFile {
198     AVFormatContext *ctx;
199     int eof_reached;      /* true if eof reached */
200     int ist_index;        /* index of first stream in ist_table */
201     int buffer_size;      /* current total buffer size */
202     int64_t ts_offset;
203     int nb_streams;       /* number of stream that avconv is aware of; may be different
204                              from ctx.nb_streams if new streams appear during av_read_frame() */
205     int rate_emu;
206 } InputFile;
207
208 typedef struct OutputStream {
209     int file_index;          /* file index */
210     int index;               /* stream index in the output file */
211     int source_index;        /* InputStream index */
212     AVStream *st;            /* stream in the output file */
213     int encoding_needed;     /* true if encoding needed for this stream */
214     int frame_number;
215     /* input pts and corresponding output pts
216        for A/V sync */
217     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
218     struct InputStream *sync_ist; /* input stream to sync against */
219     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
220     AVBitStreamFilterContext *bitstream_filters;
221     AVCodec *enc;
222     int64_t max_frames;
223
224     /* video only */
225     int video_resample;
226     AVFrame resample_frame;              /* temporary frame for image resampling */
227     struct SwsContext *img_resample_ctx; /* for image resampling */
228     int resample_height;
229     int resample_width;
230     int resample_pix_fmt;
231     AVRational frame_rate;
232     int force_fps;
233     int top_field_first;
234
235     float frame_aspect_ratio;
236
237     /* forced key frames */
238     int64_t *forced_kf_pts;
239     int forced_kf_count;
240     int forced_kf_index;
241
242     /* audio only */
243     int audio_resample;
244     ReSampleContext *resample; /* for audio resampling */
245     int resample_sample_fmt;
246     int resample_channels;
247     int resample_sample_rate;
248     int reformat_pair;
249     AVAudioConvert *reformat_ctx;
250     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
251     FILE *logfile;
252
253 #if CONFIG_AVFILTER
254     AVFilterContext *output_video_filter;
255     AVFilterContext *input_video_filter;
256     AVFilterBufferRef *picref;
257     char *avfilter;
258     AVFilterGraph *graph;
259 #endif
260
261     int64_t sws_flags;
262     AVDictionary *opts;
263     int is_past_recording_time;
264     int stream_copy;
265     const char *attachment_filename;
266     int copy_initial_nonkeyframes;
267 } OutputStream;
268
269 #if HAVE_TERMIOS_H
270
271 /* init terminal so that we can grab keys */
272 static struct termios oldtty;
273 #endif
274
275 typedef struct OutputFile {
276     AVFormatContext *ctx;
277     AVDictionary *opts;
278     int ost_index;       /* index of the first stream in output_streams */
279     int64_t recording_time; /* desired length of the resulting file in microseconds */
280     int64_t start_time;     /* start time in microseconds */
281     uint64_t limit_filesize;
282 } OutputFile;
283
284 static InputStream *input_streams = NULL;
285 static int         nb_input_streams = 0;
286 static InputFile   *input_files   = NULL;
287 static int         nb_input_files   = 0;
288
289 static OutputStream *output_streams = NULL;
290 static int        nb_output_streams = 0;
291 static OutputFile   *output_files   = NULL;
292 static int        nb_output_files   = 0;
293
294 typedef struct OptionsContext {
295     /* input/output options */
296     int64_t start_time;
297     const char *format;
298
299     SpecifierOpt *codec_names;
300     int        nb_codec_names;
301     SpecifierOpt *audio_channels;
302     int        nb_audio_channels;
303     SpecifierOpt *audio_sample_rate;
304     int        nb_audio_sample_rate;
305     SpecifierOpt *frame_rates;
306     int        nb_frame_rates;
307     SpecifierOpt *frame_sizes;
308     int        nb_frame_sizes;
309     SpecifierOpt *frame_pix_fmts;
310     int        nb_frame_pix_fmts;
311
312     /* input options */
313     int64_t input_ts_offset;
314     int rate_emu;
315
316     SpecifierOpt *ts_scale;
317     int        nb_ts_scale;
318     SpecifierOpt *dump_attachment;
319     int        nb_dump_attachment;
320
321     /* output options */
322     StreamMap *stream_maps;
323     int     nb_stream_maps;
324     /* first item specifies output metadata, second is input */
325     MetadataMap (*meta_data_maps)[2];
326     int nb_meta_data_maps;
327     int metadata_global_manual;
328     int metadata_streams_manual;
329     int metadata_chapters_manual;
330     const char **attachments;
331     int       nb_attachments;
332
333     int chapters_input_file;
334
335     int64_t recording_time;
336     uint64_t limit_filesize;
337     float mux_preload;
338     float mux_max_delay;
339
340     int video_disable;
341     int audio_disable;
342     int subtitle_disable;
343     int data_disable;
344
345     /* indexed by output file stream index */
346     int   *streamid_map;
347     int nb_streamid_map;
348
349     SpecifierOpt *metadata;
350     int        nb_metadata;
351     SpecifierOpt *max_frames;
352     int        nb_max_frames;
353     SpecifierOpt *bitstream_filters;
354     int        nb_bitstream_filters;
355     SpecifierOpt *codec_tags;
356     int        nb_codec_tags;
357     SpecifierOpt *sample_fmts;
358     int        nb_sample_fmts;
359     SpecifierOpt *qscale;
360     int        nb_qscale;
361     SpecifierOpt *forced_key_frames;
362     int        nb_forced_key_frames;
363     SpecifierOpt *force_fps;
364     int        nb_force_fps;
365     SpecifierOpt *frame_aspect_ratios;
366     int        nb_frame_aspect_ratios;
367     SpecifierOpt *rc_overrides;
368     int        nb_rc_overrides;
369     SpecifierOpt *intra_matrices;
370     int        nb_intra_matrices;
371     SpecifierOpt *inter_matrices;
372     int        nb_inter_matrices;
373     SpecifierOpt *top_field_first;
374     int        nb_top_field_first;
375     SpecifierOpt *metadata_map;
376     int        nb_metadata_map;
377     SpecifierOpt *presets;
378     int        nb_presets;
379     SpecifierOpt *copy_initial_nonkeyframes;
380     int        nb_copy_initial_nonkeyframes;
381 #if CONFIG_AVFILTER
382     SpecifierOpt *filters;
383     int        nb_filters;
384 #endif
385 } OptionsContext;
386
387 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
388 {\
389     int i, ret;\
390     for (i = 0; i < o->nb_ ## name; i++) {\
391         char *spec = o->name[i].specifier;\
392         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
393             outvar = o->name[i].u.type;\
394         else if (ret < 0)\
395             exit_program(1);\
396     }\
397 }
398
399 static void reset_options(OptionsContext *o)
400 {
401     const OptionDef *po = options;
402
403     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
404     while (po->name) {
405         void *dst = (uint8_t*)o + po->u.off;
406
407         if (po->flags & OPT_SPEC) {
408             SpecifierOpt **so = dst;
409             int i, *count = (int*)(so + 1);
410             for (i = 0; i < *count; i++) {
411                 av_freep(&(*so)[i].specifier);
412                 if (po->flags & OPT_STRING)
413                     av_freep(&(*so)[i].u.str);
414             }
415             av_freep(so);
416             *count = 0;
417         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
418             av_freep(dst);
419         po++;
420     }
421
422     av_freep(&o->stream_maps);
423     av_freep(&o->meta_data_maps);
424     av_freep(&o->streamid_map);
425
426     memset(o, 0, sizeof(*o));
427
428     o->mux_max_delay  = 0.7;
429     o->recording_time = INT64_MAX;
430     o->limit_filesize = UINT64_MAX;
431     o->chapters_input_file = INT_MAX;
432
433     uninit_opts();
434     init_opts();
435 }
436
437 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
438 {
439     AVCodecContext *s = ist->st->codec;
440     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
441     int ret;
442     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
443     int h_chroma_shift, v_chroma_shift;
444     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
445     int w = s->width, h = s->height;
446
447     if (!buf)
448         return AVERROR(ENOMEM);
449
450     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
451         w += 2*edge;
452         h += 2*edge;
453     }
454
455     avcodec_align_dimensions(s, &w, &h);
456     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
457                               s->pix_fmt, 32)) < 0) {
458         av_freep(&buf);
459         return ret;
460     }
461     /* XXX this shouldn't be needed, but some tests break without this line
462      * those decoders are buggy and need to be fixed.
463      * the following tests fail:
464      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
465      */
466     memset(buf->base[0], 128, ret);
467
468     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
469     for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
470         const int h_shift = i==0 ? 0 : h_chroma_shift;
471         const int v_shift = i==0 ? 0 : v_chroma_shift;
472         if (s->flags & CODEC_FLAG_EMU_EDGE)
473             buf->data[i] = buf->base[i];
474         else
475             buf->data[i] = buf->base[i] +
476                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
477                                    (pixel_size*edge >> h_shift), 32);
478     }
479     buf->w       = s->width;
480     buf->h       = s->height;
481     buf->pix_fmt = s->pix_fmt;
482     buf->ist     = ist;
483
484     *pbuf = buf;
485     return 0;
486 }
487
488 static void free_buffer_pool(InputStream *ist)
489 {
490     FrameBuffer *buf = ist->buffer_pool;
491     while (buf) {
492         ist->buffer_pool = buf->next;
493         av_freep(&buf->base[0]);
494         av_free(buf);
495         buf = ist->buffer_pool;
496     }
497 }
498
499 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
500 {
501     av_assert0(buf->refcount);
502     buf->refcount--;
503     if (!buf->refcount) {
504         buf->next = ist->buffer_pool;
505         ist->buffer_pool = buf;
506     }
507 }
508
509 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
510 {
511     InputStream *ist = s->opaque;
512     FrameBuffer *buf;
513     int ret, i;
514
515     if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
516         return ret;
517
518     buf              = ist->buffer_pool;
519     ist->buffer_pool = buf->next;
520     buf->next        = NULL;
521     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
522         av_freep(&buf->base[0]);
523         av_free(buf);
524         if ((ret = alloc_buffer(ist, &buf)) < 0)
525             return ret;
526     }
527     buf->refcount++;
528
529     frame->opaque        = buf;
530     frame->type          = FF_BUFFER_TYPE_USER;
531     frame->extended_data = frame->data;
532     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
533
534     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
535         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
536         frame->data[i]     = buf->data[i];
537         frame->linesize[i] = buf->linesize[i];
538     }
539
540     return 0;
541 }
542
543 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
544 {
545     InputStream *ist = s->opaque;
546     FrameBuffer *buf = frame->opaque;
547     int i;
548
549     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
550         frame->data[i] = NULL;
551
552     unref_buffer(ist, buf);
553 }
554
555 static void filter_release_buffer(AVFilterBuffer *fb)
556 {
557     FrameBuffer *buf = fb->priv;
558     av_free(fb);
559     unref_buffer(buf->ist, buf);
560 }
561
562 #if CONFIG_AVFILTER
563
564 static int configure_video_filters(InputStream *ist, OutputStream *ost)
565 {
566     AVFilterContext *last_filter, *filter;
567     /** filter graph containing all filters including input & output */
568     AVCodecContext *codec = ost->st->codec;
569     AVCodecContext *icodec = ist->st->codec;
570     enum PixelFormat pix_fmts[] = { codec->pix_fmt, PIX_FMT_NONE };
571     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
572     AVRational sample_aspect_ratio;
573     char args[255];
574     int ret;
575
576     ost->graph = avfilter_graph_alloc();
577
578     if (ist->st->sample_aspect_ratio.num){
579         sample_aspect_ratio = ist->st->sample_aspect_ratio;
580     }else
581         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
582
583     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
584              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
585              sample_aspect_ratio.num, sample_aspect_ratio.den);
586
587     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
588                                        "src", args, NULL, ost->graph);
589     if (ret < 0)
590         return ret;
591 #if FF_API_OLD_VSINK_API
592     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
593                                        "out", NULL, pix_fmts, ost->graph);
594 #else
595     buffersink_params->pixel_fmts = pix_fmts;
596     ret = avfilter_graph_create_filter(&ost->output_video_filter, avfilter_get_by_name("buffersink"),
597                                        "out", NULL, buffersink_params, ost->graph);
598 #endif
599     av_freep(&buffersink_params);
600     if (ret < 0)
601         return ret;
602     last_filter = ost->input_video_filter;
603
604     if (codec->width  != icodec->width || codec->height != icodec->height) {
605         snprintf(args, 255, "%d:%d:flags=0x%X",
606                  codec->width,
607                  codec->height,
608                  (unsigned)ost->sws_flags);
609         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
610                                                 NULL, args, NULL, ost->graph)) < 0)
611             return ret;
612         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
613             return ret;
614         last_filter = filter;
615     }
616
617     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
618     ost->graph->scale_sws_opts = av_strdup(args);
619
620     if (ost->avfilter) {
621         AVFilterInOut *outputs = avfilter_inout_alloc();
622         AVFilterInOut *inputs  = avfilter_inout_alloc();
623
624         outputs->name    = av_strdup("in");
625         outputs->filter_ctx = last_filter;
626         outputs->pad_idx = 0;
627         outputs->next    = NULL;
628
629         inputs->name    = av_strdup("out");
630         inputs->filter_ctx = ost->output_video_filter;
631         inputs->pad_idx = 0;
632         inputs->next    = NULL;
633
634         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, &inputs, &outputs, NULL)) < 0)
635             return ret;
636         av_freep(&ost->avfilter);
637     } else {
638         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
639             return ret;
640     }
641
642     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
643         return ret;
644
645     codec->width  = ost->output_video_filter->inputs[0]->w;
646     codec->height = ost->output_video_filter->inputs[0]->h;
647     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
648         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
649         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
650         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
651
652     return 0;
653 }
654 #endif /* CONFIG_AVFILTER */
655
656 static void term_exit(void)
657 {
658     av_log(NULL, AV_LOG_QUIET, "%s", "");
659 #if HAVE_TERMIOS_H
660     if(!run_as_daemon)
661         tcsetattr (0, TCSANOW, &oldtty);
662 #endif
663 }
664
665 static volatile int received_sigterm = 0;
666
667 static void
668 sigterm_handler(int sig)
669 {
670     received_sigterm = sig;
671     q_pressed++;
672     term_exit();
673 }
674
675 static void term_init(void)
676 {
677 #if HAVE_TERMIOS_H
678     if(!run_as_daemon){
679     struct termios tty;
680
681     tcgetattr (0, &tty);
682     oldtty = tty;
683     atexit(term_exit);
684
685     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
686                           |INLCR|IGNCR|ICRNL|IXON);
687     tty.c_oflag |= OPOST;
688     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
689     tty.c_cflag &= ~(CSIZE|PARENB);
690     tty.c_cflag |= CS8;
691     tty.c_cc[VMIN] = 1;
692     tty.c_cc[VTIME] = 0;
693
694     tcsetattr (0, TCSANOW, &tty);
695     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
696     }
697 #endif
698
699     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
700     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
701 #ifdef SIGXCPU
702     signal(SIGXCPU, sigterm_handler);
703 #endif
704 }
705
706 /* read a key without blocking */
707 static int read_key(void)
708 {
709 #if HAVE_TERMIOS_H
710     int n = 1;
711     unsigned char ch;
712     struct timeval tv;
713     fd_set rfds;
714
715     if(run_as_daemon)
716         return -1;
717
718     FD_ZERO(&rfds);
719     FD_SET(0, &rfds);
720     tv.tv_sec = 0;
721     tv.tv_usec = 0;
722     n = select(1, &rfds, NULL, NULL, &tv);
723     if (n > 0) {
724         n = read(0, &ch, 1);
725         if (n == 1)
726             return ch;
727
728         return n;
729     }
730 #elif HAVE_KBHIT
731     if(kbhit())
732         return(getch());
733 #endif
734     return -1;
735 }
736
737 static int decode_interrupt_cb(void *ctx)
738 {
739     q_pressed += read_key() == 'q';
740     return q_pressed > 1;
741 }
742
743 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
744
745 void exit_program(int ret)
746 {
747     int i;
748
749     /* close files */
750     for(i=0;i<nb_output_files;i++) {
751         AVFormatContext *s = output_files[i].ctx;
752         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
753             avio_close(s->pb);
754         avformat_free_context(s);
755         av_dict_free(&output_files[i].opts);
756     }
757     for(i=0;i<nb_input_files;i++) {
758         avformat_close_input(&input_files[i].ctx);
759     }
760     for (i = 0; i < nb_input_streams; i++) {
761         av_freep(&input_streams[i].decoded_frame);
762         av_freep(&input_streams[i].filtered_frame);
763         av_dict_free(&input_streams[i].opts);
764         free_buffer_pool(&input_streams[i]);
765     }
766
767     if (vstats_file)
768         fclose(vstats_file);
769     av_free(vstats_filename);
770
771     av_freep(&input_streams);
772     av_freep(&input_files);
773     av_freep(&output_streams);
774     av_freep(&output_files);
775
776     uninit_opts();
777     av_free(audio_buf);
778     av_free(audio_out);
779     allocated_audio_buf_size= allocated_audio_out_size= 0;
780
781 #if CONFIG_AVFILTER
782     avfilter_uninit();
783 #endif
784     avformat_network_deinit();
785
786     if (received_sigterm) {
787         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
788                (int) received_sigterm);
789         exit (255);
790     }
791
792     exit(ret);
793 }
794
795 static void assert_avoptions(AVDictionary *m)
796 {
797     AVDictionaryEntry *t;
798     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
799         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
800         exit_program(1);
801     }
802 }
803
804 static void assert_codec_experimental(AVCodecContext *c, int encoder)
805 {
806     const char *codec_string = encoder ? "encoder" : "decoder";
807     AVCodec *codec;
808     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
809         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
810         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
811                 "results.\nAdd '-strict experimental' if you want to use it.\n",
812                 codec_string, c->codec->name);
813         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
814         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
815             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
816                    codec_string, codec->name);
817         exit_program(1);
818     }
819 }
820
821 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
822 {
823     if(codec && codec->sample_fmts){
824         const enum AVSampleFormat *p= codec->sample_fmts;
825         for(; *p!=-1; p++){
826             if(*p == st->codec->sample_fmt)
827                 break;
828         }
829         if (*p == -1) {
830             if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
831                 av_log(NULL, AV_LOG_ERROR, "Convertion will not be lossless'\n");
832             if(av_get_sample_fmt_name(st->codec->sample_fmt))
833             av_log(NULL, AV_LOG_WARNING,
834                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
835                    av_get_sample_fmt_name(st->codec->sample_fmt),
836                    codec->name,
837                    av_get_sample_fmt_name(codec->sample_fmts[0]));
838             st->codec->sample_fmt = codec->sample_fmts[0];
839         }
840     }
841 }
842
843 static void choose_sample_rate(AVStream *st, AVCodec *codec)
844 {
845     if(codec && codec->supported_samplerates){
846         const int *p= codec->supported_samplerates;
847         int best=0;
848         int best_dist=INT_MAX;
849         for(; *p; p++){
850             int dist= abs(st->codec->sample_rate - *p);
851             if(dist < best_dist){
852                 best_dist= dist;
853                 best= *p;
854             }
855         }
856         if(best_dist){
857             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
858         }
859         st->codec->sample_rate= best;
860     }
861 }
862
863 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
864 {
865     if(codec && codec->pix_fmts){
866         const enum PixelFormat *p= codec->pix_fmts;
867         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
868             if(st->codec->codec_id==CODEC_ID_MJPEG){
869                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
870             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
871                 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};
872             }
873         }
874         for (; *p != PIX_FMT_NONE; p++) {
875             if(*p == st->codec->pix_fmt)
876                 break;
877         }
878         if (*p == PIX_FMT_NONE) {
879             if(st->codec->pix_fmt != PIX_FMT_NONE)
880                 av_log(NULL, AV_LOG_WARNING,
881                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
882                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
883                         codec->name,
884                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
885             st->codec->pix_fmt = codec->pix_fmts[0];
886         }
887     }
888 }
889
890 static double
891 get_sync_ipts(const OutputStream *ost)
892 {
893     const InputStream *ist = ost->sync_ist;
894     OutputFile *of = &output_files[ost->file_index];
895     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
896 }
897
898 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
899     int ret;
900
901     while(bsfc){
902         AVPacket new_pkt= *pkt;
903         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
904                                           &new_pkt.data, &new_pkt.size,
905                                           pkt->data, pkt->size,
906                                           pkt->flags & AV_PKT_FLAG_KEY);
907         if(a>0){
908             av_free_packet(pkt);
909             new_pkt.destruct= av_destruct_packet;
910         } else if(a<0){
911             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
912                    bsfc->filter->name, pkt->stream_index,
913                    avctx->codec ? avctx->codec->name : "copy");
914             print_error("", a);
915             if (exit_on_error)
916                 exit_program(1);
917         }
918         *pkt= new_pkt;
919
920         bsfc= bsfc->next;
921     }
922
923     ret= av_interleaved_write_frame(s, pkt);
924     if(ret < 0){
925         print_error("av_interleaved_write_frame()", ret);
926         exit_program(1);
927     }
928 }
929
930 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
931 {
932     int fill_char = 0x00;
933     if (sample_fmt == AV_SAMPLE_FMT_U8)
934         fill_char = 0x80;
935     memset(buf, fill_char, size);
936 }
937
938 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
939                          InputStream *ist, AVFrame *decoded_frame)
940 {
941     uint8_t *buftmp;
942     int64_t audio_out_size, audio_buf_size;
943
944     int size_out, frame_bytes, ret, resample_changed;
945     AVCodecContext *enc= ost->st->codec;
946     AVCodecContext *dec= ist->st->codec;
947     int osize = av_get_bytes_per_sample(enc->sample_fmt);
948     int isize = av_get_bytes_per_sample(dec->sample_fmt);
949     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
950     uint8_t *buf = decoded_frame->data[0];
951     int size     = decoded_frame->nb_samples * dec->channels * isize;
952     int64_t allocated_for_size = size;
953
954 need_realloc:
955     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
956     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
957     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
958     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
959     audio_buf_size*= osize*enc->channels;
960
961     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
962     if(coded_bps > 8*osize)
963         audio_out_size= audio_out_size * coded_bps / (8*osize);
964     audio_out_size += FF_MIN_BUFFER_SIZE;
965
966     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
967         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
968         exit_program(1);
969     }
970
971     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
972     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
973     if (!audio_buf || !audio_out){
974         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
975         exit_program(1);
976     }
977
978     if (enc->channels != dec->channels)
979         ost->audio_resample = 1;
980
981     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
982                        ost->resample_channels    != dec->channels   ||
983                        ost->resample_sample_rate != dec->sample_rate;
984
985     if ((ost->audio_resample && !ost->resample) || resample_changed) {
986         if (resample_changed) {
987             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",
988                    ist->file_index, ist->st->index,
989                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
990                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
991             ost->resample_sample_fmt  = dec->sample_fmt;
992             ost->resample_channels    = dec->channels;
993             ost->resample_sample_rate = dec->sample_rate;
994             if (ost->resample)
995                 audio_resample_close(ost->resample);
996         }
997         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
998         if (audio_sync_method <= 1 &&
999             ost->resample_sample_fmt  == enc->sample_fmt &&
1000             ost->resample_channels    == enc->channels   &&
1001             ost->resample_sample_rate == enc->sample_rate) {
1002             ost->resample = NULL;
1003             ost->audio_resample = 0;
1004         } else {
1005             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
1006                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
1007             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
1008                                                    enc->sample_rate, dec->sample_rate,
1009                                                    enc->sample_fmt,  dec->sample_fmt,
1010                                                    16, 10, 0, 0.8);
1011             if (!ost->resample) {
1012                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
1013                        dec->channels, dec->sample_rate,
1014                        enc->channels, enc->sample_rate);
1015                 exit_program(1);
1016             }
1017         }
1018     }
1019
1020 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
1021     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
1022         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
1023         if (ost->reformat_ctx)
1024             av_audio_convert_free(ost->reformat_ctx);
1025         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
1026                                                    dec->sample_fmt, 1, NULL, 0);
1027         if (!ost->reformat_ctx) {
1028             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
1029                    av_get_sample_fmt_name(dec->sample_fmt),
1030                    av_get_sample_fmt_name(enc->sample_fmt));
1031             exit_program(1);
1032         }
1033         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
1034     }
1035
1036     if(audio_sync_method){
1037         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
1038                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
1039         int idelta = delta * dec->sample_rate / enc->sample_rate;
1040         int byte_delta = idelta * isize * dec->channels;
1041
1042         //FIXME resample delay
1043         if(fabs(delta) > 50){
1044             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
1045                 if(byte_delta < 0){
1046                     byte_delta= FFMAX(byte_delta, -size);
1047                     size += byte_delta;
1048                     buf  -= byte_delta;
1049                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1050                            -byte_delta / (isize * dec->channels));
1051                     if(!size)
1052                         return;
1053                     ist->is_start=0;
1054                 }else{
1055                     static uint8_t *input_tmp= NULL;
1056                     input_tmp= av_realloc(input_tmp, byte_delta + size);
1057
1058                     if(byte_delta > allocated_for_size - size){
1059                         allocated_for_size= byte_delta + (int64_t)size;
1060                         goto need_realloc;
1061                     }
1062                     ist->is_start=0;
1063
1064                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1065                     memcpy(input_tmp + byte_delta, buf, size);
1066                     buf= input_tmp;
1067                     size += byte_delta;
1068                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1069                 }
1070             }else if(audio_sync_method>1){
1071                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
1072                 av_assert0(ost->audio_resample);
1073                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1074                        delta, comp, enc->sample_rate);
1075 //                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));
1076                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1077             }
1078         }
1079     }else
1080         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
1081                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
1082
1083     if (ost->audio_resample) {
1084         buftmp = audio_buf;
1085         size_out = audio_resample(ost->resample,
1086                                   (short *)buftmp, (short *)buf,
1087                                   size / (dec->channels * isize));
1088         size_out = size_out * enc->channels * osize;
1089     } else {
1090         buftmp = buf;
1091         size_out = size;
1092     }
1093
1094     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
1095         const void *ibuf[6]= {buftmp};
1096         void *obuf[6]= {audio_buf};
1097         int istride[6]= {isize};
1098         int ostride[6]= {osize};
1099         int len= size_out/istride[0];
1100         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
1101             printf("av_audio_convert() failed\n");
1102             if (exit_on_error)
1103                 exit_program(1);
1104             return;
1105         }
1106         buftmp = audio_buf;
1107         size_out = len*osize;
1108     }
1109
1110     /* now encode as many frames as possible */
1111     if (enc->frame_size > 1) {
1112         /* output resampled raw samples */
1113         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1114             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1115             exit_program(1);
1116         }
1117         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1118
1119         frame_bytes = enc->frame_size * osize * enc->channels;
1120
1121         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1122             AVPacket pkt;
1123             av_init_packet(&pkt);
1124
1125             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1126
1127             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1128
1129             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1130                                        (short *)audio_buf);
1131             if (ret < 0) {
1132                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1133                 exit_program(1);
1134             }
1135             audio_size += ret;
1136             pkt.stream_index= ost->index;
1137             pkt.data= audio_out;
1138             pkt.size= ret;
1139             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1140                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1141             pkt.flags |= AV_PKT_FLAG_KEY;
1142             write_frame(s, &pkt, enc, ost->bitstream_filters);
1143
1144             ost->sync_opts += enc->frame_size;
1145         }
1146     } else {
1147         AVPacket pkt;
1148         av_init_packet(&pkt);
1149
1150         ost->sync_opts += size_out / (osize * enc->channels);
1151
1152         /* output a pcm frame */
1153         /* determine the size of the coded buffer */
1154         size_out /= osize;
1155         if (coded_bps)
1156             size_out = size_out*coded_bps/8;
1157
1158         if(size_out > audio_out_size){
1159             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1160             exit_program(1);
1161         }
1162
1163         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1164         ret = avcodec_encode_audio(enc, audio_out, size_out,
1165                                    (short *)buftmp);
1166         if (ret < 0) {
1167             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1168             exit_program(1);
1169         }
1170         audio_size += ret;
1171         pkt.stream_index= ost->index;
1172         pkt.data= audio_out;
1173         pkt.size= ret;
1174         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1175             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1176         pkt.flags |= AV_PKT_FLAG_KEY;
1177         write_frame(s, &pkt, enc, ost->bitstream_filters);
1178     }
1179 }
1180
1181 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1182 {
1183     AVCodecContext *dec;
1184     AVPicture *picture2;
1185     AVPicture picture_tmp;
1186     uint8_t *buf = 0;
1187
1188     dec = ist->st->codec;
1189
1190     /* deinterlace : must be done before any resize */
1191     if (do_deinterlace) {
1192         int size;
1193
1194         /* create temporary picture */
1195         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1196         buf = av_malloc(size);
1197         if (!buf)
1198             return;
1199
1200         picture2 = &picture_tmp;
1201         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1202
1203         if(avpicture_deinterlace(picture2, picture,
1204                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1205             /* if error, do not deinterlace */
1206             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1207             av_free(buf);
1208             buf = NULL;
1209             picture2 = picture;
1210         }
1211     } else {
1212         picture2 = picture;
1213     }
1214
1215     if (picture != picture2)
1216         *picture = *picture2;
1217     *bufp = buf;
1218 }
1219
1220 static void do_subtitle_out(AVFormatContext *s,
1221                             OutputStream *ost,
1222                             InputStream *ist,
1223                             AVSubtitle *sub,
1224                             int64_t pts)
1225 {
1226     static uint8_t *subtitle_out = NULL;
1227     int subtitle_out_max_size = 1024 * 1024;
1228     int subtitle_out_size, nb, i;
1229     AVCodecContext *enc;
1230     AVPacket pkt;
1231
1232     if (pts == AV_NOPTS_VALUE) {
1233         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1234         if (exit_on_error)
1235             exit_program(1);
1236         return;
1237     }
1238
1239     enc = ost->st->codec;
1240
1241     if (!subtitle_out) {
1242         subtitle_out = av_malloc(subtitle_out_max_size);
1243     }
1244
1245     /* Note: DVB subtitle need one packet to draw them and one other
1246        packet to clear them */
1247     /* XXX: signal it in the codec context ? */
1248     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1249         nb = 2;
1250     else
1251         nb = 1;
1252
1253     for(i = 0; i < nb; i++) {
1254         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1255         // start_display_time is required to be 0
1256         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1257         sub->end_display_time -= sub->start_display_time;
1258         sub->start_display_time = 0;
1259         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1260                                                     subtitle_out_max_size, sub);
1261         if (subtitle_out_size < 0) {
1262             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1263             exit_program(1);
1264         }
1265
1266         av_init_packet(&pkt);
1267         pkt.stream_index = ost->index;
1268         pkt.data = subtitle_out;
1269         pkt.size = subtitle_out_size;
1270         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1271         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1272             /* XXX: the pts correction is handled here. Maybe handling
1273                it in the codec would be better */
1274             if (i == 0)
1275                 pkt.pts += 90 * sub->start_display_time;
1276             else
1277                 pkt.pts += 90 * sub->end_display_time;
1278         }
1279         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1280     }
1281 }
1282
1283 static int bit_buffer_size= 1024*256;
1284 static uint8_t *bit_buffer= NULL;
1285
1286 static void do_video_resample(OutputStream *ost,
1287                               InputStream *ist,
1288                               AVFrame *in_picture,
1289                               AVFrame **out_picture)
1290 {
1291     int resample_changed = 0;
1292     AVCodecContext *dec = ist->st->codec;
1293     AVCodecContext *enc = ost->st->codec;
1294     *out_picture = in_picture;
1295
1296     resample_changed = ost->resample_width   != dec->width  ||
1297                        ost->resample_height  != dec->height ||
1298                        ost->resample_pix_fmt != dec->pix_fmt;
1299
1300 #if !CONFIG_AVFILTER
1301     if (resample_changed) {
1302         av_log(NULL, AV_LOG_INFO,
1303                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1304                ist->file_index, ist->st->index,
1305                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1306                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1307         ost->resample_width   = dec->width;
1308         ost->resample_height  = dec->height;
1309         ost->resample_pix_fmt = dec->pix_fmt;
1310     }
1311
1312     ost->video_resample = dec->width   != enc->width  ||
1313                           dec->height  != enc->height ||
1314                           dec->pix_fmt != enc->pix_fmt;
1315
1316     if (ost->video_resample) {
1317         *out_picture = &ost->resample_frame;
1318         if (!ost->img_resample_ctx || resample_changed) {
1319             /* initialize the destination picture */
1320             if (!ost->resample_frame.data[0]) {
1321                 avcodec_get_frame_defaults(&ost->resample_frame);
1322                 if (avpicture_alloc((AVPicture *)&ost->resample_frame, enc->pix_fmt,
1323                                     enc->width, enc->height)) {
1324                     fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1325                     exit_program(1);
1326                 }
1327             }
1328             /* initialize a new scaler context */
1329             sws_freeContext(ost->img_resample_ctx);
1330             ost->img_resample_ctx = sws_getContext(dec->width, dec->height, dec->pix_fmt,
1331                                                    enc->width, enc->height, enc->pix_fmt,
1332                                                    ost->sws_flags, NULL, NULL, NULL);
1333             if (ost->img_resample_ctx == NULL) {
1334                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1335                 exit_program(1);
1336             }
1337         }
1338         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1339               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1340     }
1341 #else
1342     if (resample_changed) {
1343         avfilter_graph_free(&ost->graph);
1344         if (configure_video_filters(ist, ost)) {
1345             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1346             exit_program(1);
1347         }
1348     }
1349 #endif
1350     if (resample_changed) {
1351         ost->resample_width   = dec->width;
1352         ost->resample_height  = dec->height;
1353         ost->resample_pix_fmt = dec->pix_fmt;
1354     }
1355 }
1356
1357
1358 static void do_video_out(AVFormatContext *s,
1359                          OutputStream *ost,
1360                          InputStream *ist,
1361                          AVFrame *in_picture,
1362                          int *frame_size, float quality)
1363 {
1364     int nb_frames, i, ret, format_video_sync;
1365     AVFrame *final_picture;
1366     AVCodecContext *enc;
1367     double sync_ipts;
1368
1369     enc = ost->st->codec;
1370
1371     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1372
1373     /* by default, we output a single frame */
1374     nb_frames = 1;
1375
1376     *frame_size = 0;
1377
1378     format_video_sync = video_sync_method;
1379     if (format_video_sync < 0)
1380         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1381                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1382
1383     if (format_video_sync) {
1384         double vdelta = sync_ipts - ost->sync_opts;
1385         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1386         if (vdelta < -1.1)
1387             nb_frames = 0;
1388         else if (format_video_sync == 2) {
1389             if(vdelta<=-0.6){
1390                 nb_frames=0;
1391             }else if(vdelta>0.6)
1392                 ost->sync_opts= lrintf(sync_ipts);
1393         }else if (vdelta > 1.1)
1394             nb_frames = lrintf(vdelta);
1395 //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);
1396         if (nb_frames == 0){
1397             ++nb_frames_drop;
1398             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1399         }else if (nb_frames > 1) {
1400             nb_frames_dup += nb_frames - 1;
1401             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1402         }
1403     }else
1404         ost->sync_opts= lrintf(sync_ipts);
1405
1406     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1407     if (nb_frames <= 0)
1408         return;
1409
1410     do_video_resample(ost, ist, in_picture, &final_picture);
1411
1412     /* duplicates frame if needed */
1413     for(i=0;i<nb_frames;i++) {
1414         AVPacket pkt;
1415         av_init_packet(&pkt);
1416         pkt.stream_index= ost->index;
1417
1418         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1419             enc->codec->id == CODEC_ID_RAWVIDEO) {
1420             /* raw pictures are written as AVPicture structure to
1421                avoid any copies. We support temporarily the older
1422                method. */
1423             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1424             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1425             pkt.data= (uint8_t *)final_picture;
1426             pkt.size=  sizeof(AVPicture);
1427             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1428             pkt.flags |= AV_PKT_FLAG_KEY;
1429
1430             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1431         } else {
1432             AVFrame big_picture;
1433
1434             big_picture= *final_picture;
1435             /* better than nothing: use input picture interlaced
1436                settings */
1437             big_picture.interlaced_frame = in_picture->interlaced_frame;
1438             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1439                 if (ost->top_field_first == -1)
1440                     big_picture.top_field_first = in_picture->top_field_first;
1441                 else
1442                     big_picture.top_field_first = !!ost->top_field_first;
1443             }
1444
1445             /* handles same_quant here. This is not correct because it may
1446                not be a global option */
1447             big_picture.quality = quality;
1448             if (!enc->me_threshold)
1449                 big_picture.pict_type = 0;
1450 //            big_picture.pts = AV_NOPTS_VALUE;
1451             big_picture.pts= ost->sync_opts;
1452 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1453 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1454             if (ost->forced_kf_index < ost->forced_kf_count &&
1455                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1456                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1457                 ost->forced_kf_index++;
1458             }
1459             ret = avcodec_encode_video(enc,
1460                                        bit_buffer, bit_buffer_size,
1461                                        &big_picture);
1462             if (ret < 0) {
1463                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1464                 exit_program(1);
1465             }
1466
1467             if(ret>0){
1468                 pkt.data= bit_buffer;
1469                 pkt.size= ret;
1470                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1471                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1472 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1473    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1474    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1475
1476                 if(enc->coded_frame->key_frame)
1477                     pkt.flags |= AV_PKT_FLAG_KEY;
1478                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1479                 *frame_size = ret;
1480                 video_size += ret;
1481                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1482                 //        enc->frame_number-1, ret, enc->pict_type);
1483                 /* if two pass, output log */
1484                 if (ost->logfile && enc->stats_out) {
1485                     fprintf(ost->logfile, "%s", enc->stats_out);
1486                 }
1487             }
1488         }
1489         ost->sync_opts++;
1490         ost->frame_number++;
1491     }
1492 }
1493
1494 static double psnr(double d){
1495     return -10.0*log(d)/log(10.0);
1496 }
1497
1498 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1499                            int frame_size)
1500 {
1501     AVCodecContext *enc;
1502     int frame_number;
1503     double ti1, bitrate, avg_bitrate;
1504
1505     /* this is executed just the first time do_video_stats is called */
1506     if (!vstats_file) {
1507         vstats_file = fopen(vstats_filename, "w");
1508         if (!vstats_file) {
1509             perror("fopen");
1510             exit_program(1);
1511         }
1512     }
1513
1514     enc = ost->st->codec;
1515     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1516         frame_number = ost->frame_number;
1517         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1518         if (enc->flags&CODEC_FLAG_PSNR)
1519             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1520
1521         fprintf(vstats_file,"f_size= %6d ", frame_size);
1522         /* compute pts value */
1523         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1524         if (ti1 < 0.01)
1525             ti1 = 0.01;
1526
1527         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1528         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1529         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1530             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1531         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1532     }
1533 }
1534
1535 static void print_report(OutputFile *output_files,
1536                          OutputStream *ost_table, int nb_ostreams,
1537                          int is_last_report, int64_t timer_start)
1538 {
1539     char buf[1024];
1540     OutputStream *ost;
1541     AVFormatContext *oc;
1542     int64_t total_size;
1543     AVCodecContext *enc;
1544     int frame_number, vid, i;
1545     double bitrate;
1546     int64_t pts = INT64_MAX;
1547     static int64_t last_time = -1;
1548     static int qp_histogram[52];
1549     int hours, mins, secs, us;
1550
1551     if (!print_stats && !is_last_report)
1552         return;
1553
1554     if (!is_last_report) {
1555         int64_t cur_time;
1556         /* display the report every 0.5 seconds */
1557         cur_time = av_gettime();
1558         if (last_time == -1) {
1559             last_time = cur_time;
1560             return;
1561         }
1562         if ((cur_time - last_time) < 500000)
1563             return;
1564         last_time = cur_time;
1565     }
1566
1567
1568     oc = output_files[0].ctx;
1569
1570     total_size = avio_size(oc->pb);
1571     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1572         total_size= avio_tell(oc->pb);
1573
1574     buf[0] = '\0';
1575     vid = 0;
1576     for(i=0;i<nb_ostreams;i++) {
1577         float q = -1;
1578         ost = &ost_table[i];
1579         enc = ost->st->codec;
1580         if (!ost->stream_copy && enc->coded_frame)
1581             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1582         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1583             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1584         }
1585         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1586             float t = (av_gettime()-timer_start) / 1000000.0;
1587
1588             frame_number = ost->frame_number;
1589             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1590                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1591             if(is_last_report)
1592                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1593             if(qp_hist){
1594                 int j;
1595                 int qp = lrintf(q);
1596                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1597                     qp_histogram[qp]++;
1598                 for(j=0; j<32; j++)
1599                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1600             }
1601             if (enc->flags&CODEC_FLAG_PSNR){
1602                 int j;
1603                 double error, error_sum=0;
1604                 double scale, scale_sum=0;
1605                 char type[3]= {'Y','U','V'};
1606                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1607                 for(j=0; j<3; j++){
1608                     if(is_last_report){
1609                         error= enc->error[j];
1610                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1611                     }else{
1612                         error= enc->coded_frame->error[j];
1613                         scale= enc->width*enc->height*255.0*255.0;
1614                     }
1615                     if(j) scale/=4;
1616                     error_sum += error;
1617                     scale_sum += scale;
1618                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1619                 }
1620                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1621             }
1622             vid = 1;
1623         }
1624         /* compute min output value */
1625         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1626                                       ost->st->time_base, AV_TIME_BASE_Q));
1627     }
1628
1629     secs = pts / AV_TIME_BASE;
1630     us = pts % AV_TIME_BASE;
1631     mins = secs / 60;
1632     secs %= 60;
1633     hours = mins / 60;
1634     mins %= 60;
1635
1636     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1637
1638     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1639              "size=%8.0fkB time=", total_size / 1024.0);
1640     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1641              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1642              (100 * us) / AV_TIME_BASE);
1643     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1644              "bitrate=%6.1fkbits/s", bitrate);
1645
1646     if (nb_frames_dup || nb_frames_drop)
1647         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1648                 nb_frames_dup, nb_frames_drop);
1649
1650     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1651
1652     fflush(stderr);
1653
1654     if (is_last_report) {
1655         int64_t raw= audio_size + video_size + extra_size;
1656         av_log(NULL, AV_LOG_INFO, "\n");
1657         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1658                video_size/1024.0,
1659                audio_size/1024.0,
1660                extra_size/1024.0,
1661                100.0*(total_size - raw)/raw
1662         );
1663     }
1664 }
1665
1666 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1667 {
1668     int i, ret;
1669
1670     for (i = 0; i < nb_ostreams; i++) {
1671         OutputStream   *ost = &ost_table[i];
1672         AVCodecContext *enc = ost->st->codec;
1673         AVFormatContext *os = output_files[ost->file_index].ctx;
1674
1675         if (!ost->encoding_needed)
1676             continue;
1677
1678         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1679             continue;
1680         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1681             continue;
1682
1683         for(;;) {
1684             AVPacket pkt;
1685             int fifo_bytes;
1686             av_init_packet(&pkt);
1687             pkt.stream_index= ost->index;
1688
1689             switch (ost->st->codec->codec_type) {
1690             case AVMEDIA_TYPE_AUDIO:
1691                 fifo_bytes = av_fifo_size(ost->fifo);
1692                 ret = 0;
1693                 /* encode any samples remaining in fifo */
1694                 if (fifo_bytes > 0) {
1695                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1696                     int fs_tmp = enc->frame_size;
1697
1698                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1699                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1700                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1701                     } else { /* pad */
1702                         int frame_bytes = enc->frame_size*osize*enc->channels;
1703                         if (allocated_audio_buf_size < frame_bytes)
1704                             exit_program(1);
1705                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1706                     }
1707
1708                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1709                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1710                                               ost->st->time_base.num, enc->sample_rate);
1711                     enc->frame_size = fs_tmp;
1712                 }
1713                 if (ret <= 0) {
1714                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1715                 }
1716                 if (ret < 0) {
1717                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1718                     exit_program(1);
1719                 }
1720                 audio_size += ret;
1721                 pkt.flags |= AV_PKT_FLAG_KEY;
1722                 break;
1723             case AVMEDIA_TYPE_VIDEO:
1724                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1725                 if (ret < 0) {
1726                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1727                     exit_program(1);
1728                 }
1729                 video_size += ret;
1730                 if(enc->coded_frame && enc->coded_frame->key_frame)
1731                     pkt.flags |= AV_PKT_FLAG_KEY;
1732                 if (ost->logfile && enc->stats_out) {
1733                     fprintf(ost->logfile, "%s", enc->stats_out);
1734                 }
1735                 break;
1736             default:
1737                 ret=-1;
1738             }
1739
1740             if (ret <= 0)
1741                 break;
1742             pkt.data = bit_buffer;
1743             pkt.size = ret;
1744             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1745                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1746             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1747         }
1748     }
1749 }
1750
1751 /*
1752  * Check whether a packet from ist should be written into ost at this time
1753  */
1754 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1755 {
1756     OutputFile *of = &output_files[ost->file_index];
1757     int ist_index  = ist - input_streams;
1758
1759     if (ost->source_index != ist_index)
1760         return 0;
1761
1762     if (of->start_time && ist->pts < of->start_time)
1763         return 0;
1764
1765     if (of->recording_time != INT64_MAX &&
1766         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1767                       (AVRational){1, 1000000}) >= 0) {
1768         ost->is_past_recording_time = 1;
1769         return 0;
1770     }
1771
1772     return 1;
1773 }
1774
1775 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1776 {
1777     OutputFile *of = &output_files[ost->file_index];
1778     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1779     AVPicture pict;
1780     AVPacket opkt;
1781
1782     av_init_packet(&opkt);
1783
1784     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1785         !ost->copy_initial_nonkeyframes)
1786         return;
1787
1788     /* force the input stream PTS */
1789     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1790         audio_size += pkt->size;
1791     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1792         video_size += pkt->size;
1793         ost->sync_opts++;
1794     }
1795
1796     opkt.stream_index = ost->index;
1797     if (pkt->pts != AV_NOPTS_VALUE)
1798         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1799     else
1800         opkt.pts = AV_NOPTS_VALUE;
1801
1802     if (pkt->dts == AV_NOPTS_VALUE)
1803         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1804     else
1805         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1806     opkt.dts -= ost_tb_start_time;
1807
1808     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1809     opkt.flags    = pkt->flags;
1810
1811     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1812     if(   ost->st->codec->codec_id != CODEC_ID_H264
1813        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1814        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1815        ) {
1816         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1817             opkt.destruct = av_destruct_packet;
1818     } else {
1819         opkt.data = pkt->data;
1820         opkt.size = pkt->size;
1821     }
1822     if (of->ctx->oformat->flags & AVFMT_RAWPICTURE) {
1823         /* store AVPicture in AVPacket, as expected by the output format */
1824         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1825         opkt.data = (uint8_t *)&pict;
1826         opkt.size = sizeof(AVPicture);
1827         opkt.flags |= AV_PKT_FLAG_KEY;
1828     }
1829
1830     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1831     ost->st->codec->frame_number++;
1832     ost->frame_number++;
1833     av_free_packet(&opkt);
1834 }
1835
1836 static void rate_emu_sleep(InputStream *ist)
1837 {
1838     if (input_files[ist->file_index].rate_emu) {
1839         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1840         int64_t now = av_gettime() - ist->start;
1841         if (pts > now)
1842             usleep(pts - now);
1843     }
1844 }
1845
1846 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1847 {
1848     AVFrame *decoded_frame;
1849     AVCodecContext *avctx = ist->st->codec;
1850     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1851     int i, ret;
1852
1853     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1854         return AVERROR(ENOMEM);
1855     else
1856         avcodec_get_frame_defaults(ist->decoded_frame);
1857     decoded_frame = ist->decoded_frame;
1858
1859     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1860     if (ret < 0) {
1861         return ret;
1862     }
1863
1864     if (!*got_output) {
1865         /* no audio frame */
1866         return ret;
1867     }
1868
1869     /* if the decoder provides a pts, use it instead of the last packet pts.
1870        the decoder could be delaying output by a packet or more. */
1871     if (decoded_frame->pts != AV_NOPTS_VALUE)
1872         ist->next_pts = decoded_frame->pts;
1873
1874     /* increment next_pts to use for the case where the input stream does not
1875        have timestamps or there are multiple frames in the packet */
1876     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1877                      avctx->sample_rate;
1878
1879     // preprocess audio (volume)
1880     if (audio_volume != 256) {
1881         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1882         void *samples = decoded_frame->data[0];
1883         switch (avctx->sample_fmt) {
1884         case AV_SAMPLE_FMT_U8:
1885         {
1886             uint8_t *volp = samples;
1887             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1888                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1889                 *volp++ = av_clip_uint8(v);
1890             }
1891             break;
1892         }
1893         case AV_SAMPLE_FMT_S16:
1894         {
1895             int16_t *volp = samples;
1896             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1897                 int v = ((*volp) * audio_volume + 128) >> 8;
1898                 *volp++ = av_clip_int16(v);
1899             }
1900             break;
1901         }
1902         case AV_SAMPLE_FMT_S32:
1903         {
1904             int32_t *volp = samples;
1905             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1906                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1907                 *volp++ = av_clipl_int32(v);
1908             }
1909             break;
1910         }
1911         case AV_SAMPLE_FMT_FLT:
1912         {
1913             float *volp = samples;
1914             float scale = audio_volume / 256.f;
1915             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1916                 *volp++ *= scale;
1917             }
1918             break;
1919         }
1920         case AV_SAMPLE_FMT_DBL:
1921         {
1922             double *volp = samples;
1923             double scale = audio_volume / 256.;
1924             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1925                 *volp++ *= scale;
1926             }
1927             break;
1928         }
1929         default:
1930             av_log(NULL, AV_LOG_FATAL,
1931                    "Audio volume adjustment on sample format %s is not supported.\n",
1932                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1933             exit_program(1);
1934         }
1935     }
1936
1937     rate_emu_sleep(ist);
1938
1939     for (i = 0; i < nb_output_streams; i++) {
1940         OutputStream *ost = &output_streams[i];
1941
1942         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1943             continue;
1944         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1945     }
1946
1947     return ret;
1948 }
1949
1950 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1951 {
1952     AVFrame *decoded_frame, *filtered_frame = NULL;
1953     void *buffer_to_free = NULL;
1954     int i, ret = 0;
1955     float quality;
1956 #if CONFIG_AVFILTER
1957     int frame_available = 1;
1958 #endif
1959
1960     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1961         return AVERROR(ENOMEM);
1962     else
1963         avcodec_get_frame_defaults(ist->decoded_frame);
1964     decoded_frame = ist->decoded_frame;
1965     pkt->pts  = *pkt_pts;
1966     pkt->dts  = ist->pts;
1967     *pkt_pts  = AV_NOPTS_VALUE;
1968
1969     ret = avcodec_decode_video2(ist->st->codec,
1970                                 decoded_frame, got_output, pkt);
1971     if (ret < 0)
1972         return ret;
1973
1974     quality = same_quant ? decoded_frame->quality : 0;
1975     if (!*got_output) {
1976         /* no picture yet */
1977         return ret;
1978     }
1979     ist->next_pts = ist->pts = decoded_frame->best_effort_timestamp;
1980     if (pkt->duration)
1981         ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1982     else if (ist->st->codec->time_base.num != 0) {
1983         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1984                                            ist->st->codec->ticks_per_frame;
1985         ist->next_pts += ((int64_t)AV_TIME_BASE *
1986                           ist->st->codec->time_base.num * ticks) /
1987                           ist->st->codec->time_base.den;
1988     }
1989     pkt->size = 0;
1990     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1991
1992     rate_emu_sleep(ist);
1993
1994     for (i = 0; i < nb_output_streams; i++) {
1995         OutputStream *ost = &output_streams[i];
1996         int frame_size;
1997
1998         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1999             continue;
2000
2001 #if CONFIG_AVFILTER
2002         if (!decoded_frame->sample_aspect_ratio.num)
2003             decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2004         decoded_frame->pts = ist->pts;
2005         if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
2006             FrameBuffer      *buf = decoded_frame->opaque;
2007             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
2008                                         decoded_frame->data, decoded_frame->linesize,
2009                                         AV_PERM_READ | AV_PERM_PRESERVE,
2010                                         ist->st->codec->width, ist->st->codec->height,
2011                                         ist->st->codec->pix_fmt);
2012
2013             avfilter_copy_frame_props(fb, decoded_frame);
2014             fb->pts                 = ist->pts;
2015             fb->buf->priv           = buf;
2016             fb->buf->free           = filter_release_buffer;
2017
2018             buf->refcount++;
2019             av_buffersrc_buffer(ost->input_video_filter, fb);
2020         } else
2021             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, AV_VSRC_BUF_FLAG_OVERWRITE);
2022
2023         if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
2024             av_free(buffer_to_free);
2025             return AVERROR(ENOMEM);
2026         } else
2027             avcodec_get_frame_defaults(ist->filtered_frame);
2028         filtered_frame = ist->filtered_frame;
2029
2030         frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2031         while (frame_available) {
2032             if (ost->output_video_filter) {
2033                 AVRational ist_pts_tb = ost->output_video_filter->inputs[0]->time_base;
2034                 if (av_buffersink_get_buffer_ref(ost->output_video_filter, &ost->picref, 0) < 0)
2035                     goto cont;
2036                 if (ost->picref) {
2037                     avfilter_fill_frame_from_video_buffer_ref(filtered_frame, ost->picref);
2038                     ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
2039                 }
2040             }
2041             if (ost->picref->video && !ost->frame_aspect_ratio)
2042                 ost->st->codec->sample_aspect_ratio = ost->picref->video->sample_aspect_ratio;
2043 #else
2044             filtered_frame = decoded_frame;
2045 #endif
2046
2047             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
2048                          same_quant ? quality : ost->st->codec->global_quality);
2049             if (vstats_filename && frame_size)
2050                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
2051 #if CONFIG_AVFILTER
2052             cont:
2053             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
2054             if (ost->picref)
2055                 avfilter_unref_buffer(ost->picref);
2056         }
2057 #endif
2058     }
2059
2060     av_free(buffer_to_free);
2061     return ret;
2062 }
2063
2064 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2065 {
2066     AVSubtitle subtitle;
2067     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
2068                                           &subtitle, got_output, pkt);
2069     if (ret < 0)
2070         return ret;
2071     if (!*got_output)
2072         return ret;
2073
2074     rate_emu_sleep(ist);
2075
2076     for (i = 0; i < nb_output_streams; i++) {
2077         OutputStream *ost = &output_streams[i];
2078
2079         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
2080             continue;
2081
2082         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2083     }
2084
2085     avsubtitle_free(&subtitle);
2086     return ret;
2087 }
2088
2089 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2090 static int output_packet(InputStream *ist,
2091                          OutputStream *ost_table, int nb_ostreams,
2092                          const AVPacket *pkt)
2093 {
2094     int i;
2095     int got_output;
2096     int64_t pkt_pts = AV_NOPTS_VALUE;
2097     AVPacket avpkt;
2098
2099     if (ist->next_pts == AV_NOPTS_VALUE)
2100         ist->next_pts = ist->pts;
2101
2102     if (pkt == NULL) {
2103         /* EOF handling */
2104         av_init_packet(&avpkt);
2105         avpkt.data = NULL;
2106         avpkt.size = 0;
2107         goto handle_eof;
2108     } else {
2109         avpkt = *pkt;
2110     }
2111
2112     if(pkt->dts != AV_NOPTS_VALUE)
2113         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2114     if(pkt->pts != AV_NOPTS_VALUE)
2115         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2116
2117     //while we have more to decode or while the decoder did output something on EOF
2118     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2119         int ret = 0;
2120     handle_eof:
2121
2122         ist->pts = ist->next_pts;
2123
2124         if (avpkt.size && avpkt.size != pkt->size) {
2125             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2126                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2127             ist->showed_multi_packet_warning = 1;
2128         }
2129
2130         switch(ist->st->codec->codec_type) {
2131         case AVMEDIA_TYPE_AUDIO:
2132             ret = transcode_audio    (ist, &avpkt, &got_output);
2133             break;
2134         case AVMEDIA_TYPE_VIDEO:
2135             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2136             break;
2137         case AVMEDIA_TYPE_SUBTITLE:
2138             ret = transcode_subtitles(ist, &avpkt, &got_output);
2139             break;
2140         default:
2141             return -1;
2142         }
2143
2144         if (ret < 0)
2145             return ret;
2146         // touch data and size only if not EOF
2147         if (pkt) {
2148             avpkt.data += ret;
2149             avpkt.size -= ret;
2150         }
2151         if (!got_output) {
2152             continue;
2153         }
2154     }
2155
2156     /* handle stream copy */
2157     if (!ist->decoding_needed) {
2158         rate_emu_sleep(ist);
2159         ist->pts = ist->next_pts;
2160         switch (ist->st->codec->codec_type) {
2161         case AVMEDIA_TYPE_AUDIO:
2162             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2163                              ist->st->codec->sample_rate;
2164             break;
2165         case AVMEDIA_TYPE_VIDEO:
2166             if (ist->st->codec->time_base.num != 0) {
2167                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2168                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2169                                   ist->st->codec->time_base.num * ticks) /
2170                                   ist->st->codec->time_base.den;
2171             }
2172             break;
2173         }
2174     }
2175     for (i = 0; pkt && i < nb_ostreams; i++) {
2176         OutputStream *ost = &ost_table[i];
2177
2178         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2179             continue;
2180
2181         do_streamcopy(ist, ost, pkt);
2182     }
2183
2184     return 0;
2185 }
2186
2187 static void print_sdp(OutputFile *output_files, int n)
2188 {
2189     char sdp[2048];
2190     int i;
2191     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2192
2193     if (!avc)
2194         exit_program(1);
2195     for (i = 0; i < n; i++)
2196         avc[i] = output_files[i].ctx;
2197
2198     av_sdp_create(avc, n, sdp, sizeof(sdp));
2199     printf("SDP:\n%s\n", sdp);
2200     fflush(stdout);
2201     av_freep(&avc);
2202 }
2203
2204 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2205                              char *error, int error_len)
2206 {
2207     int i;
2208     InputStream *ist = &input_streams[ist_index];
2209     if (ist->decoding_needed) {
2210         AVCodec *codec = ist->dec;
2211         if (!codec) {
2212             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2213                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
2214             return AVERROR(EINVAL);
2215         }
2216
2217         if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2218             ist->st->codec->get_buffer     = codec_get_buffer;
2219             ist->st->codec->release_buffer = codec_release_buffer;
2220             ist->st->codec->opaque         = ist;
2221         }
2222
2223         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2224             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2225                     ist->file_index, ist->st->index);
2226             return AVERROR(EINVAL);
2227         }
2228         assert_codec_experimental(ist->st->codec, 0);
2229         assert_avoptions(ist->opts);
2230     }
2231
2232     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;
2233     ist->next_pts = AV_NOPTS_VALUE;
2234     ist->is_start = 1;
2235
2236     return 0;
2237 }
2238
2239 static int transcode_init(OutputFile *output_files,
2240                           int nb_output_files,
2241                           InputFile *input_files,
2242                           int nb_input_files)
2243 {
2244     int ret = 0, i, j, k;
2245     AVFormatContext *oc;
2246     AVCodecContext *codec, *icodec;
2247     OutputStream *ost;
2248     InputStream *ist;
2249     char error[1024];
2250     int want_sdp = 1;
2251
2252     /* init framerate emulation */
2253     for (i = 0; i < nb_input_files; i++) {
2254         InputFile *ifile = &input_files[i];
2255         if (ifile->rate_emu)
2256             for (j = 0; j < ifile->nb_streams; j++)
2257                 input_streams[j + ifile->ist_index].start = av_gettime();
2258     }
2259
2260     /* output stream init */
2261     for (i = 0; i < nb_output_files; i++) {
2262         oc = output_files[i].ctx;
2263         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2264             av_dump_format(oc, i, oc->filename, 1);
2265             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2266             return AVERROR(EINVAL);
2267         }
2268     }
2269
2270     /* for each output stream, we compute the right encoding parameters */
2271     for (i = 0; i < nb_output_streams; i++) {
2272         ost = &output_streams[i];
2273         oc  = output_files[ost->file_index].ctx;
2274         ist = &input_streams[ost->source_index];
2275
2276         if (ost->attachment_filename)
2277             continue;
2278
2279         codec  = ost->st->codec;
2280         icodec = ist->st->codec;
2281
2282         ost->st->disposition          = ist->st->disposition;
2283         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2284         codec->chroma_sample_location = icodec->chroma_sample_location;
2285
2286         if (ost->stream_copy) {
2287             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2288
2289             if (extra_size > INT_MAX) {
2290                 return AVERROR(EINVAL);
2291             }
2292
2293             /* if stream_copy is selected, no need to decode or encode */
2294             codec->codec_id   = icodec->codec_id;
2295             codec->codec_type = icodec->codec_type;
2296
2297             if (!codec->codec_tag) {
2298                 if (!oc->oformat->codec_tag ||
2299                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2300                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2301                     codec->codec_tag = icodec->codec_tag;
2302             }
2303
2304             codec->bit_rate       = icodec->bit_rate;
2305             codec->rc_max_rate    = icodec->rc_max_rate;
2306             codec->rc_buffer_size = icodec->rc_buffer_size;
2307             codec->field_order    = icodec->field_order;
2308             codec->extradata      = av_mallocz(extra_size);
2309             if (!codec->extradata) {
2310                 return AVERROR(ENOMEM);
2311             }
2312             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2313
2314             codec->extradata_size = icodec->extradata_size;
2315             if (!copy_tb) {
2316                 codec->time_base      = icodec->time_base;
2317                 codec->time_base.num *= icodec->ticks_per_frame;
2318                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2319                           codec->time_base.num, codec->time_base.den, INT_MAX);
2320             } else
2321                 codec->time_base = ist->st->time_base;
2322
2323             switch(codec->codec_type) {
2324             case AVMEDIA_TYPE_AUDIO:
2325                 if(audio_volume != 256) {
2326                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2327                     exit_program(1);
2328                 }
2329                 codec->channel_layout     = icodec->channel_layout;
2330                 codec->sample_rate        = icodec->sample_rate;
2331                 codec->channels           = icodec->channels;
2332                 codec->frame_size         = icodec->frame_size;
2333                 codec->audio_service_type = icodec->audio_service_type;
2334                 codec->block_align        = icodec->block_align;
2335                 break;
2336             case AVMEDIA_TYPE_VIDEO:
2337                 codec->pix_fmt            = icodec->pix_fmt;
2338                 codec->width              = icodec->width;
2339                 codec->height             = icodec->height;
2340                 codec->has_b_frames       = icodec->has_b_frames;
2341                 if (!codec->sample_aspect_ratio.num) {
2342                     codec->sample_aspect_ratio   =
2343                     ost->st->sample_aspect_ratio =
2344                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2345                         ist->st->codec->sample_aspect_ratio.num ?
2346                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2347                 }
2348                 break;
2349             case AVMEDIA_TYPE_SUBTITLE:
2350                 codec->width  = icodec->width;
2351                 codec->height = icodec->height;
2352                 break;
2353             case AVMEDIA_TYPE_DATA:
2354             case AVMEDIA_TYPE_ATTACHMENT:
2355                 break;
2356             default:
2357                 abort();
2358             }
2359         } else {
2360             if (!ost->enc)
2361                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2362
2363             ist->decoding_needed = 1;
2364             ost->encoding_needed = 1;
2365
2366             switch(codec->codec_type) {
2367             case AVMEDIA_TYPE_AUDIO:
2368                 ost->fifo = av_fifo_alloc(1024);
2369                 if (!ost->fifo) {
2370                     return AVERROR(ENOMEM);
2371                 }
2372                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2373
2374                 if (!codec->sample_rate)
2375                     codec->sample_rate = icodec->sample_rate;
2376                 choose_sample_rate(ost->st, ost->enc);
2377                 codec->time_base = (AVRational){1, codec->sample_rate};
2378
2379                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2380                     codec->sample_fmt = icodec->sample_fmt;
2381                 choose_sample_fmt(ost->st, ost->enc);
2382
2383                 if (!codec->channels) {
2384                     codec->channels = icodec->channels;
2385                     codec->channel_layout = icodec->channel_layout;
2386                 }
2387                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2388                     codec->channel_layout = 0;
2389
2390                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2391                 icodec->request_channels  = codec-> channels;
2392                 ost->resample_sample_fmt  = icodec->sample_fmt;
2393                 ost->resample_sample_rate = icodec->sample_rate;
2394                 ost->resample_channels    = icodec->channels;
2395                 break;
2396             case AVMEDIA_TYPE_VIDEO:
2397                 if (codec->pix_fmt == PIX_FMT_NONE)
2398                     codec->pix_fmt = icodec->pix_fmt;
2399                 choose_pixel_fmt(ost->st, ost->enc);
2400
2401                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2402                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2403                     exit_program(1);
2404                 }
2405
2406                 if (!codec->width || !codec->height) {
2407                     codec->width  = icodec->width;
2408                     codec->height = icodec->height;
2409                 }
2410
2411                 ost->video_resample = codec->width   != icodec->width  ||
2412                                       codec->height  != icodec->height ||
2413                                       codec->pix_fmt != icodec->pix_fmt;
2414                 if (ost->video_resample) {
2415                     codec->bits_per_raw_sample= frame_bits_per_raw_sample;
2416                 }
2417
2418                 ost->resample_height  = icodec->height;
2419                 ost->resample_width   = icodec->width;
2420                 ost->resample_pix_fmt = icodec->pix_fmt;
2421
2422                 if (!ost->frame_rate.num)
2423                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2424                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2425                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2426                     ost->frame_rate = ost->enc->supported_framerates[idx];
2427                 }
2428                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2429                 if(   av_q2d(codec->time_base) < 0.001 && video_sync_method
2430                    && (video_sync_method==1 || (video_sync_method<0 && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2431                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not effciciently supporting it.\n"
2432                                                "Please consider specifiying a lower framerate, a different muxer or -vsync 2\n");
2433                 }
2434
2435 #if CONFIG_AVFILTER
2436                 if (configure_video_filters(ist, ost)) {
2437                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2438                     exit(1);
2439                 }
2440 #endif
2441                 break;
2442             case AVMEDIA_TYPE_SUBTITLE:
2443                 break;
2444             default:
2445                 abort();
2446                 break;
2447             }
2448             /* two pass mode */
2449             if (codec->codec_id != CODEC_ID_H264 &&
2450                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2451                 char logfilename[1024];
2452                 FILE *f;
2453
2454                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2455                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2456                          i);
2457                 if (codec->flags & CODEC_FLAG_PASS1) {
2458                     f = fopen(logfilename, "wb");
2459                     if (!f) {
2460                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2461                                logfilename, strerror(errno));
2462                         exit_program(1);
2463                     }
2464                     ost->logfile = f;
2465                 } else {
2466                     char  *logbuffer;
2467                     size_t logbuffer_size;
2468                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2469                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2470                                logfilename);
2471                         exit_program(1);
2472                     }
2473                     codec->stats_in = logbuffer;
2474                 }
2475             }
2476         }
2477         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2478             /* maximum video buffer size is 6-bytes per pixel, plus DPX header size */
2479             int        size = codec->width * codec->height;
2480             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 1664);
2481         }
2482     }
2483
2484     if (!bit_buffer)
2485         bit_buffer = av_malloc(bit_buffer_size);
2486     if (!bit_buffer) {
2487         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2488                bit_buffer_size);
2489         return AVERROR(ENOMEM);
2490     }
2491
2492     /* open each encoder */
2493     for (i = 0; i < nb_output_streams; i++) {
2494         ost = &output_streams[i];
2495         if (ost->encoding_needed) {
2496             AVCodec      *codec = ost->enc;
2497             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2498             if (!codec) {
2499                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2500                          ost->st->codec->codec_id, ost->file_index, ost->index);
2501                 ret = AVERROR(EINVAL);
2502                 goto dump_format;
2503             }
2504             if (dec->subtitle_header) {
2505                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2506                 if (!ost->st->codec->subtitle_header) {
2507                     ret = AVERROR(ENOMEM);
2508                     goto dump_format;
2509                 }
2510                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2511                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2512             }
2513             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2514                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2515                         ost->file_index, ost->index);
2516                 ret = AVERROR(EINVAL);
2517                 goto dump_format;
2518             }
2519             assert_codec_experimental(ost->st->codec, 1);
2520             assert_avoptions(ost->opts);
2521             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2522                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2523                                              "It takes bits/s as argument, not kbits/s\n");
2524             extra_size += ost->st->codec->extradata_size;
2525
2526             if (ost->st->codec->me_threshold)
2527                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2528         }
2529     }
2530
2531     /* init input streams */
2532     for (i = 0; i < nb_input_streams; i++)
2533         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2534             goto dump_format;
2535
2536     /* discard unused programs */
2537     for (i = 0; i < nb_input_files; i++) {
2538         InputFile *ifile = &input_files[i];
2539         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2540             AVProgram *p = ifile->ctx->programs[j];
2541             int discard  = AVDISCARD_ALL;
2542
2543             for (k = 0; k < p->nb_stream_indexes; k++)
2544                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2545                     discard = AVDISCARD_DEFAULT;
2546                     break;
2547                 }
2548             p->discard = discard;
2549         }
2550     }
2551
2552     /* open files and write file headers */
2553     for (i = 0; i < nb_output_files; i++) {
2554         oc = output_files[i].ctx;
2555         oc->interrupt_callback = int_cb;
2556         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2557             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2558             ret = AVERROR(EINVAL);
2559             goto dump_format;
2560         }
2561 //        assert_avoptions(output_files[i].opts);
2562         if (strcmp(oc->oformat->name, "rtp")) {
2563             want_sdp = 0;
2564         }
2565     }
2566
2567  dump_format:
2568     /* dump the file output parameters - cannot be done before in case
2569        of stream copy */
2570     for (i = 0; i < nb_output_files; i++) {
2571         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2572     }
2573
2574     /* dump the stream mapping */
2575     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2576     for (i = 0; i < nb_output_streams; i++) {
2577         ost = &output_streams[i];
2578
2579         if (ost->attachment_filename) {
2580             /* an attached file */
2581             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2582                    ost->attachment_filename, ost->file_index, ost->index);
2583             continue;
2584         }
2585         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2586                input_streams[ost->source_index].file_index,
2587                input_streams[ost->source_index].st->index,
2588                ost->file_index,
2589                ost->index);
2590         if (ost->sync_ist != &input_streams[ost->source_index])
2591             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2592                    ost->sync_ist->file_index,
2593                    ost->sync_ist->st->index);
2594         if (ost->stream_copy)
2595             av_log(NULL, AV_LOG_INFO, " (copy)");
2596         else
2597             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2598                    input_streams[ost->source_index].dec->name : "?",
2599                    ost->enc ? ost->enc->name : "?");
2600         av_log(NULL, AV_LOG_INFO, "\n");
2601     }
2602
2603     if (ret) {
2604         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2605         return ret;
2606     }
2607
2608     if (want_sdp) {
2609         print_sdp(output_files, nb_output_files);
2610     }
2611
2612     return 0;
2613 }
2614
2615 /*
2616  * The following code is the main loop of the file converter
2617  */
2618 static int transcode(OutputFile *output_files,
2619                      int nb_output_files,
2620                      InputFile *input_files,
2621                      int nb_input_files)
2622 {
2623     int ret, i;
2624     AVFormatContext *is, *os;
2625     OutputStream *ost;
2626     InputStream *ist;
2627     uint8_t *no_packet;
2628     int no_packet_count=0;
2629     int64_t timer_start;
2630     int key;
2631
2632     if (!(no_packet = av_mallocz(nb_input_files)))
2633         exit_program(1);
2634
2635     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2636     if (ret < 0)
2637         goto fail;
2638
2639     if (!using_stdin) {
2640         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2641         avio_set_interrupt_cb(decode_interrupt_cb);
2642     }
2643     term_init();
2644
2645     timer_start = av_gettime();
2646
2647     for(; received_sigterm == 0;) {
2648         int file_index, ist_index;
2649         AVPacket pkt;
2650         int64_t ipts_min;
2651         double opts_min;
2652
2653         ipts_min = INT64_MAX;
2654         opts_min= 1e100;
2655         /* if 'q' pressed, exits */
2656         if (!using_stdin) {
2657             if (q_pressed)
2658                 break;
2659             /* read_key() returns 0 on EOF */
2660             key = read_key();
2661             if (key == 'q')
2662                 break;
2663             if (key == '+') av_log_set_level(av_log_get_level()+10);
2664             if (key == '-') av_log_set_level(av_log_get_level()-10);
2665             if (key == 's') qp_hist     ^= 1;
2666             if (key == 'h'){
2667                 if (do_hex_dump){
2668                     do_hex_dump = do_pkt_dump = 0;
2669                 } else if(do_pkt_dump){
2670                     do_hex_dump = 1;
2671                 } else
2672                     do_pkt_dump = 1;
2673                 av_log_set_level(AV_LOG_DEBUG);
2674             }
2675             if (key == 'd' || key == 'D'){
2676                 int debug=0;
2677                 if(key == 'D') {
2678                     debug = input_streams[0].st->codec->debug<<1;
2679                     if(!debug) debug = 1;
2680                     while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2681                         debug += debug;
2682                 }else
2683                     scanf("%d", &debug);
2684                 for(i=0;i<nb_input_streams;i++) {
2685                     input_streams[i].st->codec->debug = debug;
2686                 }
2687                 for(i=0;i<nb_output_streams;i++) {
2688                     ost = &output_streams[i];
2689                     ost->st->codec->debug = debug;
2690                 }
2691                 if(debug) av_log_set_level(AV_LOG_DEBUG);
2692                 fprintf(stderr,"debug=%d\n", debug);
2693             }
2694             if (key == '?'){
2695                 fprintf(stderr, "key    function\n"
2696                                 "?      show this help\n"
2697                                 "+      increase verbosity\n"
2698                                 "-      decrease verbosity\n"
2699                                 "D      cycle through available debug modes\n"
2700                                 "h      dump packets/hex press to cycle through the 3 states\n"
2701                                 "q      quit\n"
2702                                 "s      Show QP histogram\n"
2703                 );
2704             }
2705         }
2706
2707         /* select the stream that we must read now by looking at the
2708            smallest output pts */
2709         file_index = -1;
2710         for (i = 0; i < nb_output_streams; i++) {
2711             OutputFile *of;
2712             int64_t ipts;
2713             double  opts;
2714             ost = &output_streams[i];
2715             of = &output_files[ost->file_index];
2716             os = output_files[ost->file_index].ctx;
2717             ist = &input_streams[ost->source_index];
2718             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2719                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2720                 continue;
2721             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2722             ipts = ist->pts;
2723             if (!input_files[ist->file_index].eof_reached){
2724                 if(ipts < ipts_min) {
2725                     ipts_min = ipts;
2726                     if(input_sync ) file_index = ist->file_index;
2727                 }
2728                 if(opts < opts_min) {
2729                     opts_min = opts;
2730                     if(!input_sync) file_index = ist->file_index;
2731                 }
2732             }
2733             if (ost->frame_number >= ost->max_frames) {
2734                 int j;
2735                 for (j = 0; j < of->ctx->nb_streams; j++)
2736                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2737                 continue;
2738             }
2739         }
2740         /* if none, if is finished */
2741         if (file_index < 0) {
2742             if(no_packet_count){
2743                 no_packet_count=0;
2744                 memset(no_packet, 0, nb_input_files);
2745                 usleep(10000);
2746                 continue;
2747             }
2748             break;
2749         }
2750
2751         /* read a frame from it and output it in the fifo */
2752         is = input_files[file_index].ctx;
2753         ret= av_read_frame(is, &pkt);
2754         if(ret == AVERROR(EAGAIN)){
2755             no_packet[file_index]=1;
2756             no_packet_count++;
2757             continue;
2758         }
2759         if (ret < 0) {
2760             input_files[file_index].eof_reached = 1;
2761             if (opt_shortest)
2762                 break;
2763             else
2764                 continue;
2765         }
2766
2767         no_packet_count=0;
2768         memset(no_packet, 0, nb_input_files);
2769
2770         if (do_pkt_dump) {
2771             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2772                              is->streams[pkt.stream_index]);
2773         }
2774         /* the following test is needed in case new streams appear
2775            dynamically in stream : we ignore them */
2776         if (pkt.stream_index >= input_files[file_index].nb_streams)
2777             goto discard_packet;
2778         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2779         ist = &input_streams[ist_index];
2780         if (ist->discard)
2781             goto discard_packet;
2782
2783         if (pkt.dts != AV_NOPTS_VALUE)
2784             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2785         if (pkt.pts != AV_NOPTS_VALUE)
2786             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2787
2788         if(pkt.pts != AV_NOPTS_VALUE)
2789             pkt.pts *= ist->ts_scale;
2790         if(pkt.dts != AV_NOPTS_VALUE)
2791             pkt.dts *= ist->ts_scale;
2792
2793 //        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);
2794         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2795             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2796             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2797             int64_t delta= pkt_dts - ist->next_pts;
2798             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2799                 input_files[ist->file_index].ts_offset -= delta;
2800                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2801                        delta, input_files[ist->file_index].ts_offset);
2802                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2803                 if(pkt.pts != AV_NOPTS_VALUE)
2804                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2805             }
2806         }
2807
2808         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2809         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2810
2811             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2812                    ist->file_index, ist->st->index);
2813             if (exit_on_error)
2814                 exit_program(1);
2815             av_free_packet(&pkt);
2816             continue;
2817         }
2818
2819     discard_packet:
2820         av_free_packet(&pkt);
2821
2822         /* dump report by using the output first video and audio streams */
2823         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2824     }
2825
2826     /* at the end of stream, we must flush the decoder buffers */
2827     for (i = 0; i < nb_input_streams; i++) {
2828         ist = &input_streams[i];
2829         if (ist->decoding_needed) {
2830             output_packet(ist, output_streams, nb_output_streams, NULL);
2831         }
2832     }
2833     flush_encoders(output_streams, nb_output_streams);
2834
2835     term_exit();
2836
2837     /* write the trailer if needed and close file */
2838     for(i=0;i<nb_output_files;i++) {
2839         os = output_files[i].ctx;
2840         av_write_trailer(os);
2841     }
2842
2843     /* dump report by using the first video and audio streams */
2844     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2845
2846     /* close each encoder */
2847     for (i = 0; i < nb_output_streams; i++) {
2848         ost = &output_streams[i];
2849         if (ost->encoding_needed) {
2850             av_freep(&ost->st->codec->stats_in);
2851             avcodec_close(ost->st->codec);
2852         }
2853 #if CONFIG_AVFILTER
2854         avfilter_graph_free(&ost->graph);
2855 #endif
2856     }
2857
2858     /* close each decoder */
2859     for (i = 0; i < nb_input_streams; i++) {
2860         ist = &input_streams[i];
2861         if (ist->decoding_needed) {
2862             avcodec_close(ist->st->codec);
2863         }
2864     }
2865
2866     /* finished ! */
2867     ret = 0;
2868
2869  fail:
2870     av_freep(&bit_buffer);
2871     av_freep(&no_packet);
2872
2873     if (output_streams) {
2874         for (i = 0; i < nb_output_streams; i++) {
2875             ost = &output_streams[i];
2876             if (ost) {
2877                 if (ost->stream_copy)
2878                     av_freep(&ost->st->codec->extradata);
2879                 if (ost->logfile) {
2880                     fclose(ost->logfile);
2881                     ost->logfile = NULL;
2882                 }
2883                 av_fifo_free(ost->fifo); /* works even if fifo is not
2884                                              initialized but set to zero */
2885                 av_freep(&ost->st->codec->subtitle_header);
2886                 av_free(ost->resample_frame.data[0]);
2887                 av_free(ost->forced_kf_pts);
2888                 if (ost->video_resample)
2889                     sws_freeContext(ost->img_resample_ctx);
2890                 if (ost->resample)
2891                     audio_resample_close(ost->resample);
2892                 if (ost->reformat_ctx)
2893                     av_audio_convert_free(ost->reformat_ctx);
2894                 av_dict_free(&ost->opts);
2895             }
2896         }
2897     }
2898     return ret;
2899 }
2900
2901 static double parse_frame_aspect_ratio(const char *arg)
2902 {
2903     int x = 0, y = 0;
2904     double ar = 0;
2905     const char *p;
2906     char *end;
2907
2908     p = strchr(arg, ':');
2909     if (p) {
2910         x = strtol(arg, &end, 10);
2911         if (end == p)
2912             y = strtol(end+1, &end, 10);
2913         if (x > 0 && y > 0)
2914             ar = (double)x / (double)y;
2915     } else
2916         ar = strtod(arg, NULL);
2917
2918     if (!ar) {
2919         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2920         exit_program(1);
2921     }
2922     return ar;
2923 }
2924
2925 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2926 {
2927     return parse_option(o, "codec:a", arg, options);
2928 }
2929
2930 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2931 {
2932     return parse_option(o, "codec:v", arg, options);
2933 }
2934
2935 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2936 {
2937     return parse_option(o, "codec:s", arg, options);
2938 }
2939
2940 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2941 {
2942     return parse_option(o, "codec:d", arg, options);
2943 }
2944
2945 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2946 {
2947     StreamMap *m = NULL;
2948     int i, negative = 0, file_idx;
2949     int sync_file_idx = -1, sync_stream_idx;
2950     char *p, *sync;
2951     char *map;
2952
2953     if (*arg == '-') {
2954         negative = 1;
2955         arg++;
2956     }
2957     map = av_strdup(arg);
2958
2959     /* parse sync stream first, just pick first matching stream */
2960     if (sync = strchr(map, ',')) {
2961         *sync = 0;
2962         sync_file_idx = strtol(sync + 1, &sync, 0);
2963         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2964             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2965             exit_program(1);
2966         }
2967         if (*sync)
2968             sync++;
2969         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2970             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2971                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2972                 sync_stream_idx = i;
2973                 break;
2974             }
2975         if (i == input_files[sync_file_idx].nb_streams) {
2976             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2977                                        "match any streams.\n", arg);
2978             exit_program(1);
2979         }
2980     }
2981
2982
2983     file_idx = strtol(map, &p, 0);
2984     if (file_idx >= nb_input_files || file_idx < 0) {
2985         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2986         exit_program(1);
2987     }
2988     if (negative)
2989         /* disable some already defined maps */
2990         for (i = 0; i < o->nb_stream_maps; i++) {
2991             m = &o->stream_maps[i];
2992             if (file_idx == m->file_index &&
2993                 check_stream_specifier(input_files[m->file_index].ctx,
2994                                        input_files[m->file_index].ctx->streams[m->stream_index],
2995                                        *p == ':' ? p + 1 : p) > 0)
2996                 m->disabled = 1;
2997         }
2998     else
2999         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
3000             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
3001                         *p == ':' ? p + 1 : p) <= 0)
3002                 continue;
3003             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
3004                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
3005             m = &o->stream_maps[o->nb_stream_maps - 1];
3006
3007             m->file_index   = file_idx;
3008             m->stream_index = i;
3009
3010             if (sync_file_idx >= 0) {
3011                 m->sync_file_index   = sync_file_idx;
3012                 m->sync_stream_index = sync_stream_idx;
3013             } else {
3014                 m->sync_file_index   = file_idx;
3015                 m->sync_stream_index = i;
3016             }
3017         }
3018
3019     if (!m) {
3020         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
3021         exit_program(1);
3022     }
3023
3024     av_freep(&map);
3025     return 0;
3026 }
3027
3028 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
3029 {
3030     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
3031                                 &o->nb_attachments, o->nb_attachments + 1);
3032     o->attachments[o->nb_attachments - 1] = arg;
3033     return 0;
3034 }
3035
3036 /**
3037  * Parse a metadata specifier in arg.
3038  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
3039  * @param index for type c/p, chapter/program index is written here
3040  * @param stream_spec for type s, the stream specifier is written here
3041  */
3042 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
3043 {
3044     if (*arg) {
3045         *type = *arg;
3046         switch (*arg) {
3047         case 'g':
3048             break;
3049         case 's':
3050             if (*(++arg) && *arg != ':') {
3051                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
3052                 exit_program(1);
3053             }
3054             *stream_spec = *arg == ':' ? arg + 1 : "";
3055             break;
3056         case 'c':
3057         case 'p':
3058             if (*(++arg) == ':')
3059                 *index = strtol(++arg, NULL, 0);
3060             break;
3061         default:
3062             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
3063             exit_program(1);
3064         }
3065     } else
3066         *type = 'g';
3067 }
3068
3069 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
3070 {
3071     AVDictionary **meta_in = NULL;
3072     AVDictionary **meta_out;
3073     int i, ret = 0;
3074     char type_in, type_out;
3075     const char *istream_spec = NULL, *ostream_spec = NULL;
3076     int idx_in = 0, idx_out = 0;
3077
3078     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
3079     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
3080
3081     if (type_in == 'g' || type_out == 'g')
3082         o->metadata_global_manual = 1;
3083     if (type_in == 's' || type_out == 's')
3084         o->metadata_streams_manual = 1;
3085     if (type_in == 'c' || type_out == 'c')
3086         o->metadata_chapters_manual = 1;
3087
3088 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
3089     if ((index) < 0 || (index) >= (nb_elems)) {\
3090         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
3091                 (desc), (index));\
3092         exit_program(1);\
3093     }
3094
3095 #define SET_DICT(type, meta, context, index)\
3096         switch (type) {\
3097         case 'g':\
3098             meta = &context->metadata;\
3099             break;\
3100         case 'c':\
3101             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
3102             meta = &context->chapters[index]->metadata;\
3103             break;\
3104         case 'p':\
3105             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
3106             meta = &context->programs[index]->metadata;\
3107             break;\
3108         }\
3109
3110     SET_DICT(type_in, meta_in, ic, idx_in);
3111     SET_DICT(type_out, meta_out, oc, idx_out);
3112
3113     /* for input streams choose first matching stream */
3114     if (type_in == 's') {
3115         for (i = 0; i < ic->nb_streams; i++) {
3116             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3117                 meta_in = &ic->streams[i]->metadata;
3118                 break;
3119             } else if (ret < 0)
3120                 exit_program(1);
3121         }
3122         if (!meta_in) {
3123             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3124             exit_program(1);
3125         }
3126     }
3127
3128     if (type_out == 's') {
3129         for (i = 0; i < oc->nb_streams; i++) {
3130             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3131                 meta_out = &oc->streams[i]->metadata;
3132                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3133             } else if (ret < 0)
3134                 exit_program(1);
3135         }
3136     } else
3137         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3138
3139     return 0;
3140 }
3141
3142 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3143 {
3144     const char *codec_string = encoder ? "encoder" : "decoder";
3145     AVCodec *codec;
3146
3147     codec = encoder ?
3148         avcodec_find_encoder_by_name(name) :
3149         avcodec_find_decoder_by_name(name);
3150     if(!codec) {
3151         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3152         exit_program(1);
3153     }
3154     if(codec->type != type) {
3155         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3156         exit_program(1);
3157     }
3158     return codec;
3159 }
3160
3161 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3162 {
3163     char *codec_name = NULL;
3164
3165     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3166     if (codec_name) {
3167         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3168         st->codec->codec_id = codec->id;
3169         return codec;
3170     } else
3171         return avcodec_find_decoder(st->codec->codec_id);
3172 }
3173
3174 /**
3175  * Add all the streams from the given input file to the global
3176  * list of input streams.
3177  */
3178 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3179 {
3180     int i, rfps, rfps_base;
3181
3182     for (i = 0; i < ic->nb_streams; i++) {
3183         AVStream *st = ic->streams[i];
3184         AVCodecContext *dec = st->codec;
3185         InputStream *ist;
3186
3187         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3188         ist = &input_streams[nb_input_streams - 1];
3189         ist->st = st;
3190         ist->file_index = nb_input_files;
3191         ist->discard = 1;
3192         ist->opts = filter_codec_opts(codec_opts, choose_decoder(o, ic, st), ic, st);
3193
3194         ist->ts_scale = 1.0;
3195         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3196
3197         ist->dec = choose_decoder(o, ic, st);
3198
3199         switch (dec->codec_type) {
3200         case AVMEDIA_TYPE_AUDIO:
3201             if(!ist->dec)
3202                 ist->dec = avcodec_find_decoder(dec->codec_id);
3203             if(o->audio_disable)
3204                 st->discard= AVDISCARD_ALL;
3205             break;
3206         case AVMEDIA_TYPE_VIDEO:
3207             if(!ist->dec)
3208                 ist->dec = avcodec_find_decoder(dec->codec_id);
3209             rfps      = ic->streams[i]->r_frame_rate.num;
3210             rfps_base = ic->streams[i]->r_frame_rate.den;
3211             if (dec->lowres) {
3212                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3213             }
3214
3215             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3216
3217                 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",
3218                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3219                        (float)rfps / rfps_base, rfps, rfps_base);
3220             }
3221
3222             if (o->video_disable)
3223                 st->discard= AVDISCARD_ALL;
3224             else if(video_discard)
3225                 st->discard= video_discard;
3226             break;
3227         case AVMEDIA_TYPE_DATA:
3228             break;
3229         case AVMEDIA_TYPE_SUBTITLE:
3230             if(!ist->dec)
3231                 ist->dec = avcodec_find_decoder(dec->codec_id);
3232             if(o->subtitle_disable)
3233                 st->discard = AVDISCARD_ALL;
3234             break;
3235         case AVMEDIA_TYPE_ATTACHMENT:
3236         case AVMEDIA_TYPE_UNKNOWN:
3237             break;
3238         default:
3239             abort();
3240         }
3241     }
3242 }
3243
3244 static void assert_file_overwrite(const char *filename)
3245 {
3246     if ((!file_overwrite || no_file_overwrite) &&
3247         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3248          av_strstart(filename, "file:", NULL))) {
3249         if (avio_check(filename, 0) == 0) {
3250             if (!using_stdin && (!no_file_overwrite || file_overwrite)) {
3251                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3252                 fflush(stderr);
3253                 if (!read_yesno()) {
3254                     fprintf(stderr, "Not overwriting - exiting\n");
3255                     exit_program(1);
3256                 }
3257             }
3258             else {
3259                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3260                 exit_program(1);
3261             }
3262         }
3263     }
3264 }
3265
3266 static void dump_attachment(AVStream *st, const char *filename)
3267 {
3268     int ret;
3269     AVIOContext *out = NULL;
3270     AVDictionaryEntry *e;
3271
3272     if (!st->codec->extradata_size) {
3273         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3274                nb_input_files - 1, st->index);
3275         return;
3276     }
3277     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3278         filename = e->value;
3279     if (!*filename) {
3280         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3281                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3282         exit_program(1);
3283     }
3284
3285     assert_file_overwrite(filename);
3286
3287     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3288         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3289                filename);
3290         exit_program(1);
3291     }
3292
3293     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3294     avio_flush(out);
3295     avio_close(out);
3296 }
3297
3298 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3299 {
3300     AVFormatContext *ic;
3301     AVInputFormat *file_iformat = NULL;
3302     int err, i, ret;
3303     int64_t timestamp;
3304     uint8_t buf[128];
3305     AVDictionary **opts;
3306     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3307
3308     if (o->format) {
3309         if (!(file_iformat = av_find_input_format(o->format))) {
3310             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3311             exit_program(1);
3312         }
3313     }
3314
3315     if (!strcmp(filename, "-"))
3316         filename = "pipe:";
3317
3318     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3319                     !strcmp(filename, "/dev/stdin");
3320
3321     /* get default parameters from command line */
3322     ic = avformat_alloc_context();
3323     if (!ic) {
3324         print_error(filename, AVERROR(ENOMEM));
3325         exit_program(1);
3326     }
3327     if (o->nb_audio_sample_rate) {
3328         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3329         av_dict_set(&format_opts, "sample_rate", buf, 0);
3330     }
3331     if (o->nb_audio_channels) {
3332         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3333         av_dict_set(&format_opts, "channels", buf, 0);
3334     }
3335     if (o->nb_frame_rates) {
3336         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3337     }
3338     if (o->nb_frame_sizes) {
3339         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3340     }
3341     if (o->nb_frame_pix_fmts)
3342         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3343
3344     ic->flags |= AVFMT_FLAG_NONBLOCK;
3345     ic->interrupt_callback = int_cb;
3346
3347     /* open the input file with generic avformat function */
3348     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3349     if (err < 0) {
3350         print_error(filename, err);
3351         exit_program(1);
3352     }
3353     assert_avoptions(format_opts);
3354
3355     /* apply forced codec ids */
3356     for (i = 0; i < ic->nb_streams; i++)
3357         choose_decoder(o, ic, ic->streams[i]);
3358
3359     /* Set AVCodecContext options for avformat_find_stream_info */
3360     opts = setup_find_stream_info_opts(ic, codec_opts);
3361     orig_nb_streams = ic->nb_streams;
3362
3363     /* If not enough info to get the stream parameters, we decode the
3364        first frames to get it. (used in mpeg case for example) */
3365     ret = avformat_find_stream_info(ic, opts);
3366     if (ret < 0) {
3367         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3368         avformat_close_input(&ic);
3369         exit_program(1);
3370     }
3371
3372     timestamp = o->start_time;
3373     /* add the stream start time */
3374     if (ic->start_time != AV_NOPTS_VALUE)
3375         timestamp += ic->start_time;
3376
3377     /* if seeking requested, we execute it */
3378     if (o->start_time != 0) {
3379         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3380         if (ret < 0) {
3381             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3382                    filename, (double)timestamp / AV_TIME_BASE);
3383         }
3384     }
3385
3386     /* update the current parameters so that they match the one of the input stream */
3387     add_input_streams(o, ic);
3388
3389     /* dump the file content */
3390     av_dump_format(ic, nb_input_files, filename, 0);
3391
3392     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3393     input_files[nb_input_files - 1].ctx        = ic;
3394     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3395     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3396     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3397     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3398
3399     for (i = 0; i < o->nb_dump_attachment; i++) {
3400         int j;
3401
3402         for (j = 0; j < ic->nb_streams; j++) {
3403             AVStream *st = ic->streams[j];
3404
3405             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3406                 dump_attachment(st, o->dump_attachment[i].u.str);
3407         }
3408     }
3409
3410     for (i = 0; i < orig_nb_streams; i++)
3411         av_dict_free(&opts[i]);
3412     av_freep(&opts);
3413
3414     reset_options(o);
3415     return 0;
3416 }
3417
3418 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3419                                     AVCodecContext *avctx)
3420 {
3421     char *p;
3422     int n = 1, i;
3423     int64_t t;
3424
3425     for (p = kf; *p; p++)
3426         if (*p == ',')
3427             n++;
3428     ost->forced_kf_count = n;
3429     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3430     if (!ost->forced_kf_pts) {
3431         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3432         exit_program(1);
3433     }
3434     for (i = 0; i < n; i++) {
3435         p = i ? strchr(p, ',') + 1 : kf;
3436         t = parse_time_or_die("force_key_frames", p, 1);
3437         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3438     }
3439 }
3440
3441 static uint8_t *get_line(AVIOContext *s)
3442 {
3443     AVIOContext *line;
3444     uint8_t *buf;
3445     char c;
3446
3447     if (avio_open_dyn_buf(&line) < 0) {
3448         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3449         exit_program(1);
3450     }
3451
3452     while ((c = avio_r8(s)) && c != '\n')
3453         avio_w8(line, c);
3454     avio_w8(line, 0);
3455     avio_close_dyn_buf(line, &buf);
3456
3457     return buf;
3458 }
3459
3460 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3461 {
3462     int i, ret = 1;
3463     char filename[1000];
3464     const char *base[3] = { getenv("AVCONV_DATADIR"),
3465                             getenv("HOME"),
3466                             AVCONV_DATADIR,
3467                             };
3468
3469     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3470         if (!base[i])
3471             continue;
3472         if (codec_name) {
3473             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3474                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3475             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3476         }
3477         if (ret) {
3478             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3479                      i != 1 ? "" : "/.avconv", preset_name);
3480             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3481         }
3482     }
3483     return ret;
3484 }
3485
3486 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3487 {
3488     char *codec_name = NULL;
3489
3490     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3491     if (!codec_name) {
3492         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3493                                                   NULL, ost->st->codec->codec_type);
3494         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3495     } else if (!strcmp(codec_name, "copy"))
3496         ost->stream_copy = 1;
3497     else {
3498         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3499         ost->st->codec->codec_id = ost->enc->id;
3500     }
3501 }
3502
3503 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3504 {
3505     OutputStream *ost;
3506     AVStream *st = avformat_new_stream(oc, NULL);
3507     int idx      = oc->nb_streams - 1, ret = 0;
3508     char *bsf = NULL, *next, *codec_tag = NULL;
3509     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3510     double qscale = -1;
3511     char *buf = NULL, *arg = NULL, *preset = NULL;
3512     AVIOContext *s = NULL;
3513
3514     if (!st) {
3515         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3516         exit_program(1);
3517     }
3518
3519     if (oc->nb_streams - 1 < o->nb_streamid_map)
3520         st->id = o->streamid_map[oc->nb_streams - 1];
3521
3522     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3523                                 nb_output_streams + 1);
3524     ost = &output_streams[nb_output_streams - 1];
3525     ost->file_index = nb_output_files;
3526     ost->index = idx;
3527     ost->st    = st;
3528     st->codec->codec_type = type;
3529     choose_encoder(o, oc, ost);
3530     if (ost->enc) {
3531         ost->opts  = filter_codec_opts(codec_opts, ost->enc, oc, st);
3532     }
3533
3534     avcodec_get_context_defaults3(st->codec, ost->enc);
3535     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3536
3537     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3538     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3539         do  {
3540             buf = get_line(s);
3541             if (!buf[0] || buf[0] == '#') {
3542                 av_free(buf);
3543                 continue;
3544             }
3545             if (!(arg = strchr(buf, '='))) {
3546                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3547                 exit_program(1);
3548             }
3549             *arg++ = 0;
3550             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3551             av_free(buf);
3552         } while (!s->eof_reached);
3553         avio_close(s);
3554     }
3555     if (ret) {
3556         av_log(NULL, AV_LOG_FATAL,
3557                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3558                preset, ost->file_index, ost->index);
3559         exit_program(1);
3560     }
3561
3562     ost->max_frames = INT64_MAX;
3563     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3564
3565     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3566     while (bsf) {
3567         if (next = strchr(bsf, ','))
3568             *next++ = 0;
3569         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3570             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3571             exit_program(1);
3572         }
3573         if (bsfc_prev)
3574             bsfc_prev->next = bsfc;
3575         else
3576             ost->bitstream_filters = bsfc;
3577
3578         bsfc_prev = bsfc;
3579         bsf       = next;
3580     }
3581
3582     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3583     if (codec_tag) {
3584         uint32_t tag = strtol(codec_tag, &next, 0);
3585         if (*next)
3586             tag = AV_RL32(codec_tag);
3587         st->codec->codec_tag = tag;
3588     }
3589
3590     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3591     if (qscale >= 0 || same_quant) {
3592         st->codec->flags |= CODEC_FLAG_QSCALE;
3593         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3594     }
3595
3596     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3597         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3598
3599     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3600     return ost;
3601 }
3602
3603 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3604 {
3605     int i;
3606     const char *p = str;
3607     for(i = 0;; i++) {
3608         dest[i] = atoi(p);
3609         if(i == 63)
3610             break;
3611         p = strchr(p, ',');
3612         if(!p) {
3613             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3614             exit_program(1);
3615         }
3616         p++;
3617     }
3618 }
3619
3620 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3621 {
3622     AVStream *st;
3623     OutputStream *ost;
3624     AVCodecContext *video_enc;
3625
3626     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3627     st  = ost->st;
3628     video_enc = st->codec;
3629
3630     if (!ost->stream_copy) {
3631         const char *p = NULL;
3632         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3633         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3634         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3635         int i;
3636
3637         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3638         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3639             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3640             exit_program(1);
3641         }
3642
3643         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3644         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3645             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3646             exit_program(1);
3647         }
3648
3649         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3650         if (frame_aspect_ratio)
3651             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3652
3653         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3654         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3655             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3656             exit_program(1);
3657         }
3658         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3659
3660         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3661         if (intra_matrix) {
3662             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3663                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3664                 exit_program(1);
3665             }
3666             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3667         }
3668         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3669         if (inter_matrix) {
3670             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3671                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3672                 exit_program(1);
3673             }
3674             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3675         }
3676
3677         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3678         for(i=0; p; i++){
3679             int start, end, q;
3680             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3681             if(e!=3){
3682                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3683                 exit_program(1);
3684             }
3685             video_enc->rc_override=
3686                 av_realloc(video_enc->rc_override,
3687                            sizeof(RcOverride)*(i+1));
3688             video_enc->rc_override[i].start_frame= start;
3689             video_enc->rc_override[i].end_frame  = end;
3690             if(q>0){
3691                 video_enc->rc_override[i].qscale= q;
3692                 video_enc->rc_override[i].quality_factor= 1.0;
3693             }
3694             else{
3695                 video_enc->rc_override[i].qscale= 0;
3696                 video_enc->rc_override[i].quality_factor= -q/100.0;
3697             }
3698             p= strchr(p, '/');
3699             if(p) p++;
3700       &nbs