doxygen: remove unreplaced variables from custom header and footer
[ffmpeg.git] / avconv.c
1 /*
2  * avconv main
3  * Copyright (c) 2000-2011 The libav developers.
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <unistd.h>
31 #include "libavformat/avformat.h"
32 #include "libavdevice/avdevice.h"
33 #include "libswscale/swscale.h"
34 #include "libavutil/opt.h"
35 #include "libavcodec/audioconvert.h"
36 #include "libavutil/audioconvert.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavformat/os_support.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/avfiltergraph.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/vsrc_buffer.h"
55 #endif
56
57 #if HAVE_SYS_RESOURCE_H
58 #include <sys/types.h>
59 #include <sys/time.h>
60 #include <sys/resource.h>
61 #elif HAVE_GETPROCESSTIMES
62 #include <windows.h>
63 #endif
64 #if HAVE_GETPROCESSMEMORYINFO
65 #include <windows.h>
66 #include <psapi.h>
67 #endif
68
69 #if HAVE_SYS_SELECT_H
70 #include <sys/select.h>
71 #endif
72
73 #include <time.h>
74
75 #include "cmdutils.h"
76
77 #include "libavutil/avassert.h"
78
79 const char program_name[] = "avconv";
80 const int program_birth_year = 2000;
81
82 /* select an input stream for an output stream */
83 typedef struct StreamMap {
84     int disabled;           /** 1 is this mapping is disabled by a negative map */
85     int file_index;
86     int stream_index;
87     int sync_file_index;
88     int sync_stream_index;
89 } StreamMap;
90
91 /**
92  * select an input file for an output file
93  */
94 typedef struct MetadataMap {
95     int  file;      ///< file index
96     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
97     int  index;     ///< stream/chapter/program number
98 } MetadataMap;
99
100 static const OptionDef options[];
101
102 static int video_discard = 0;
103 static int same_quant = 0;
104 static int do_deinterlace = 0;
105 static int intra_dc_precision = 8;
106 static int qp_hist = 0;
107
108 static int file_overwrite = 0;
109 static int do_benchmark = 0;
110 static int do_hex_dump = 0;
111 static int do_pkt_dump = 0;
112 static int do_pass = 0;
113 static char *pass_logfilename_prefix = NULL;
114 static int video_sync_method= -1;
115 static int audio_sync_method= 0;
116 static float audio_drift_threshold= 0.1;
117 static int copy_ts= 0;
118 static int copy_tb = 1;
119 static int opt_shortest = 0;
120 static char *vstats_filename;
121 static FILE *vstats_file;
122
123 static int audio_volume = 256;
124
125 static int exit_on_error = 0;
126 static int using_stdin = 0;
127 static int64_t video_size = 0;
128 static int64_t audio_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int input_sync;
133
134 static float dts_delta_threshold = 10;
135
136 static int print_stats = 1;
137
138 static uint8_t *audio_buf;
139 static uint8_t *audio_out;
140 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
143
144 typedef struct FrameBuffer {
145     uint8_t *base[4];
146     uint8_t *data[4];
147     int  linesize[4];
148
149     int h, w;
150     enum PixelFormat pix_fmt;
151
152     int refcount;
153     struct InputStream *ist;
154     struct FrameBuffer *next;
155 } FrameBuffer;
156
157 typedef struct InputStream {
158     int file_index;
159     AVStream *st;
160     int discard;             /* true if stream data should be discarded */
161     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
162     AVCodec *dec;
163     AVFrame *decoded_frame;
164     AVFrame *filtered_frame;
165
166     int64_t       start;     /* time when read started */
167     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
168                                 is not defined */
169     int64_t       pts;       /* current pts */
170     PtsCorrectionContext pts_ctx;
171     double ts_scale;
172     int is_start;            /* is 1 at the start and after a discontinuity */
173     int showed_multi_packet_warning;
174     AVDictionary *opts;
175
176     /* a pool of free buffers for decoded data */
177     FrameBuffer *buffer_pool;
178 } InputStream;
179
180 typedef struct InputFile {
181     AVFormatContext *ctx;
182     int eof_reached;      /* true if eof reached */
183     int ist_index;        /* index of first stream in ist_table */
184     int buffer_size;      /* current total buffer size */
185     int64_t ts_offset;
186     int nb_streams;       /* number of stream that avconv is aware of; may be different
187                              from ctx.nb_streams if new streams appear during av_read_frame() */
188     int rate_emu;
189 } InputFile;
190
191 typedef struct OutputStream {
192     int file_index;          /* file index */
193     int index;               /* stream index in the output file */
194     int source_index;        /* InputStream index */
195     AVStream *st;            /* stream in the output file */
196     int encoding_needed;     /* true if encoding needed for this stream */
197     int frame_number;
198     /* input pts and corresponding output pts
199        for A/V sync */
200     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
201     struct InputStream *sync_ist; /* input stream to sync against */
202     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
203     AVBitStreamFilterContext *bitstream_filters;
204     AVCodec *enc;
205     int64_t max_frames;
206
207     /* video only */
208     int video_resample;
209     AVFrame pict_tmp;      /* temporary image for resampling */
210     struct SwsContext *img_resample_ctx; /* for image resampling */
211     int resample_height;
212     int resample_width;
213     int resample_pix_fmt;
214     AVRational frame_rate;
215     int force_fps;
216     int top_field_first;
217
218     float frame_aspect_ratio;
219
220     /* forced key frames */
221     int64_t *forced_kf_pts;
222     int forced_kf_count;
223     int forced_kf_index;
224
225     /* audio only */
226     int audio_resample;
227     ReSampleContext *resample; /* for audio resampling */
228     int resample_sample_fmt;
229     int resample_channels;
230     int resample_sample_rate;
231     int reformat_pair;
232     AVAudioConvert *reformat_ctx;
233     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
234     FILE *logfile;
235
236 #if CONFIG_AVFILTER
237     AVFilterContext *output_video_filter;
238     AVFilterContext *input_video_filter;
239     AVFilterBufferRef *picref;
240     char *avfilter;
241     AVFilterGraph *graph;
242 #endif
243
244     int64_t sws_flags;
245     AVDictionary *opts;
246     int is_past_recording_time;
247     int stream_copy;
248     const char *attachment_filename;
249     int copy_initial_nonkeyframes;
250 } OutputStream;
251
252
253 typedef struct OutputFile {
254     AVFormatContext *ctx;
255     AVDictionary *opts;
256     int ost_index;       /* index of the first stream in output_streams */
257     int64_t recording_time; /* desired length of the resulting file in microseconds */
258     int64_t start_time;     /* start time in microseconds */
259     uint64_t limit_filesize;
260 } OutputFile;
261
262 static InputStream *input_streams = NULL;
263 static int         nb_input_streams = 0;
264 static InputFile   *input_files   = NULL;
265 static int         nb_input_files   = 0;
266
267 static OutputStream *output_streams = NULL;
268 static int        nb_output_streams = 0;
269 static OutputFile   *output_files   = NULL;
270 static int        nb_output_files   = 0;
271
272 typedef struct OptionsContext {
273     /* input/output options */
274     int64_t start_time;
275     const char *format;
276
277     SpecifierOpt *codec_names;
278     int        nb_codec_names;
279     SpecifierOpt *audio_channels;
280     int        nb_audio_channels;
281     SpecifierOpt *audio_sample_rate;
282     int        nb_audio_sample_rate;
283     SpecifierOpt *frame_rates;
284     int        nb_frame_rates;
285     SpecifierOpt *frame_sizes;
286     int        nb_frame_sizes;
287     SpecifierOpt *frame_pix_fmts;
288     int        nb_frame_pix_fmts;
289
290     /* input options */
291     int64_t input_ts_offset;
292     int rate_emu;
293
294     SpecifierOpt *ts_scale;
295     int        nb_ts_scale;
296     SpecifierOpt *dump_attachment;
297     int        nb_dump_attachment;
298
299     /* output options */
300     StreamMap *stream_maps;
301     int     nb_stream_maps;
302     /* first item specifies output metadata, second is input */
303     MetadataMap (*meta_data_maps)[2];
304     int nb_meta_data_maps;
305     int metadata_global_manual;
306     int metadata_streams_manual;
307     int metadata_chapters_manual;
308     const char **attachments;
309     int       nb_attachments;
310
311     int chapters_input_file;
312
313     int64_t recording_time;
314     uint64_t limit_filesize;
315     float mux_preload;
316     float mux_max_delay;
317
318     int video_disable;
319     int audio_disable;
320     int subtitle_disable;
321     int data_disable;
322
323     /* indexed by output file stream index */
324     int   *streamid_map;
325     int nb_streamid_map;
326
327     SpecifierOpt *metadata;
328     int        nb_metadata;
329     SpecifierOpt *max_frames;
330     int        nb_max_frames;
331     SpecifierOpt *bitstream_filters;
332     int        nb_bitstream_filters;
333     SpecifierOpt *codec_tags;
334     int        nb_codec_tags;
335     SpecifierOpt *sample_fmts;
336     int        nb_sample_fmts;
337     SpecifierOpt *qscale;
338     int        nb_qscale;
339     SpecifierOpt *forced_key_frames;
340     int        nb_forced_key_frames;
341     SpecifierOpt *force_fps;
342     int        nb_force_fps;
343     SpecifierOpt *frame_aspect_ratios;
344     int        nb_frame_aspect_ratios;
345     SpecifierOpt *rc_overrides;
346     int        nb_rc_overrides;
347     SpecifierOpt *intra_matrices;
348     int        nb_intra_matrices;
349     SpecifierOpt *inter_matrices;
350     int        nb_inter_matrices;
351     SpecifierOpt *top_field_first;
352     int        nb_top_field_first;
353     SpecifierOpt *metadata_map;
354     int        nb_metadata_map;
355     SpecifierOpt *presets;
356     int        nb_presets;
357     SpecifierOpt *copy_initial_nonkeyframes;
358     int        nb_copy_initial_nonkeyframes;
359 #if CONFIG_AVFILTER
360     SpecifierOpt *filters;
361     int        nb_filters;
362 #endif
363 } OptionsContext;
364
365 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
366 {\
367     int i, ret;\
368     for (i = 0; i < o->nb_ ## name; i++) {\
369         char *spec = o->name[i].specifier;\
370         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
371             outvar = o->name[i].u.type;\
372         else if (ret < 0)\
373             exit_program(1);\
374     }\
375 }
376
377 static void reset_options(OptionsContext *o)
378 {
379     const OptionDef *po = options;
380
381     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
382     while (po->name) {
383         void *dst = (uint8_t*)o + po->u.off;
384
385         if (po->flags & OPT_SPEC) {
386             SpecifierOpt **so = dst;
387             int i, *count = (int*)(so + 1);
388             for (i = 0; i < *count; i++) {
389                 av_freep(&(*so)[i].specifier);
390                 if (po->flags & OPT_STRING)
391                     av_freep(&(*so)[i].u.str);
392             }
393             av_freep(so);
394             *count = 0;
395         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
396             av_freep(dst);
397         po++;
398     }
399
400     av_freep(&o->stream_maps);
401     av_freep(&o->meta_data_maps);
402     av_freep(&o->streamid_map);
403
404     memset(o, 0, sizeof(*o));
405
406     o->mux_max_delay  = 0.7;
407     o->recording_time = INT64_MAX;
408     o->limit_filesize = UINT64_MAX;
409     o->chapters_input_file = INT_MAX;
410
411     uninit_opts();
412     init_opts();
413 }
414
415 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
416 {
417     AVCodecContext *s = ist->st->codec;
418     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
419     int ret;
420     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
421     int h_chroma_shift, v_chroma_shift;
422     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
423     int w = s->width, h = s->height;
424
425     if (!buf)
426         return AVERROR(ENOMEM);
427
428     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
429         w += 2*edge;
430         h += 2*edge;
431     }
432
433     avcodec_align_dimensions(s, &w, &h);
434     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
435                               s->pix_fmt, 32)) < 0) {
436         av_freep(&buf);
437         return ret;
438     }
439     /* XXX this shouldn't be needed, but some tests break without this line
440      * those decoders are buggy and need to be fixed.
441      * the following tests fail:
442      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
443      */
444     memset(buf->base[0], 128, ret);
445
446     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
447     for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
448         const int h_shift = i==0 ? 0 : h_chroma_shift;
449         const int v_shift = i==0 ? 0 : v_chroma_shift;
450         if (s->flags & CODEC_FLAG_EMU_EDGE)
451             buf->data[i] = buf->base[i];
452         else
453             buf->data[i] = buf->base[i] +
454                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
455                                    (pixel_size*edge >> h_shift), 32);
456     }
457     buf->w       = s->width;
458     buf->h       = s->height;
459     buf->pix_fmt = s->pix_fmt;
460     buf->ist     = ist;
461
462     *pbuf = buf;
463     return 0;
464 }
465
466 static void free_buffer_pool(InputStream *ist)
467 {
468     FrameBuffer *buf = ist->buffer_pool;
469     while (buf) {
470         ist->buffer_pool = buf->next;
471         av_freep(&buf->base[0]);
472         av_free(buf);
473         buf = ist->buffer_pool;
474     }
475 }
476
477 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
478 {
479     av_assert0(buf->refcount);
480     buf->refcount--;
481     if (!buf->refcount) {
482         buf->next = ist->buffer_pool;
483         ist->buffer_pool = buf;
484     }
485 }
486
487 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
488 {
489     InputStream *ist = s->opaque;
490     FrameBuffer *buf;
491     int ret, i;
492
493     if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
494         return ret;
495
496     buf              = ist->buffer_pool;
497     ist->buffer_pool = buf->next;
498     buf->next        = NULL;
499     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
500         av_freep(&buf->base[0]);
501         av_free(buf);
502         if ((ret = alloc_buffer(ist, &buf)) < 0)
503             return ret;
504     }
505     buf->refcount++;
506
507     frame->opaque        = buf;
508     frame->type          = FF_BUFFER_TYPE_USER;
509     frame->extended_data = frame->data;
510     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
511
512     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
513         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
514         frame->data[i]     = buf->data[i];
515         frame->linesize[i] = buf->linesize[i];
516     }
517
518     return 0;
519 }
520
521 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
522 {
523     InputStream *ist = s->opaque;
524     FrameBuffer *buf = frame->opaque;
525     int i;
526
527     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
528         frame->data[i] = NULL;
529
530     unref_buffer(ist, buf);
531 }
532
533 static void filter_release_buffer(AVFilterBuffer *fb)
534 {
535     FrameBuffer *buf = fb->priv;
536     av_free(fb);
537     unref_buffer(buf->ist, buf);
538 }
539
540 #if CONFIG_AVFILTER
541
542 static int configure_video_filters(InputStream *ist, OutputStream *ost)
543 {
544     AVFilterContext *last_filter, *filter;
545     /** filter graph containing all filters including input & output */
546     AVCodecContext *codec = ost->st->codec;
547     AVCodecContext *icodec = ist->st->codec;
548     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
549     AVRational sample_aspect_ratio;
550     char args[255];
551     int ret;
552
553     ost->graph = avfilter_graph_alloc();
554
555     if (ist->st->sample_aspect_ratio.num){
556         sample_aspect_ratio = ist->st->sample_aspect_ratio;
557     }else
558         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
559
560     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
561              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
562              sample_aspect_ratio.num, sample_aspect_ratio.den);
563
564     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
565                                        "src", args, NULL, ost->graph);
566     if (ret < 0)
567         return ret;
568     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
569                                        "out", NULL, &ffsink_ctx, ost->graph);
570     if (ret < 0)
571         return ret;
572     last_filter = ost->input_video_filter;
573
574     if (codec->width  != icodec->width || codec->height != icodec->height) {
575         snprintf(args, 255, "%d:%d:flags=0x%X",
576                  codec->width,
577                  codec->height,
578                  (unsigned)ost->sws_flags);
579         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
580                                                 NULL, args, NULL, ost->graph)) < 0)
581             return ret;
582         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
583             return ret;
584         last_filter = filter;
585     }
586
587     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
588     ost->graph->scale_sws_opts = av_strdup(args);
589
590     if (ost->avfilter) {
591         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
592         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
593
594         outputs->name    = av_strdup("in");
595         outputs->filter_ctx = last_filter;
596         outputs->pad_idx = 0;
597         outputs->next    = NULL;
598
599         inputs->name    = av_strdup("out");
600         inputs->filter_ctx = ost->output_video_filter;
601         inputs->pad_idx = 0;
602         inputs->next    = NULL;
603
604         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
605             return ret;
606         av_freep(&ost->avfilter);
607     } else {
608         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
609             return ret;
610     }
611
612     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
613         return ret;
614
615     codec->width  = ost->output_video_filter->inputs[0]->w;
616     codec->height = ost->output_video_filter->inputs[0]->h;
617     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
618         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
619         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
620         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
621
622     return 0;
623 }
624 #endif /* CONFIG_AVFILTER */
625
626 static void term_exit(void)
627 {
628     av_log(NULL, AV_LOG_QUIET, "");
629 }
630
631 static volatile int received_sigterm = 0;
632 static volatile int received_nb_signals = 0;
633
634 static void
635 sigterm_handler(int sig)
636 {
637     received_sigterm = sig;
638     received_nb_signals++;
639     term_exit();
640 }
641
642 static void term_init(void)
643 {
644     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
645     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
646 #ifdef SIGXCPU
647     signal(SIGXCPU, sigterm_handler);
648 #endif
649 }
650
651 static int decode_interrupt_cb(void *ctx)
652 {
653     return received_nb_signals > 1;
654 }
655
656 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
657
658 void exit_program(int ret)
659 {
660     int i;
661
662     /* close files */
663     for(i=0;i<nb_output_files;i++) {
664         AVFormatContext *s = output_files[i].ctx;
665         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
666             avio_close(s->pb);
667         avformat_free_context(s);
668         av_dict_free(&output_files[i].opts);
669     }
670     for(i=0;i<nb_input_files;i++) {
671         avformat_close_input(&input_files[i].ctx);
672     }
673     for (i = 0; i < nb_input_streams; i++) {
674         av_freep(&input_streams[i].decoded_frame);
675         av_freep(&input_streams[i].filtered_frame);
676         av_dict_free(&input_streams[i].opts);
677         free_buffer_pool(&input_streams[i]);
678     }
679
680     if (vstats_file)
681         fclose(vstats_file);
682     av_free(vstats_filename);
683
684     av_freep(&input_streams);
685     av_freep(&input_files);
686     av_freep(&output_streams);
687     av_freep(&output_files);
688
689     uninit_opts();
690     av_free(audio_buf);
691     av_free(audio_out);
692     allocated_audio_buf_size= allocated_audio_out_size= 0;
693
694 #if CONFIG_AVFILTER
695     avfilter_uninit();
696 #endif
697     avformat_network_deinit();
698
699     if (received_sigterm) {
700         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
701                (int) received_sigterm);
702         exit (255);
703     }
704
705     exit(ret);
706 }
707
708 static void assert_avoptions(AVDictionary *m)
709 {
710     AVDictionaryEntry *t;
711     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
712         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
713         exit_program(1);
714     }
715 }
716
717 static void assert_codec_experimental(AVCodecContext *c, int encoder)
718 {
719     const char *codec_string = encoder ? "encoder" : "decoder";
720     AVCodec *codec;
721     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
722         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
723         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
724                 "results.\nAdd '-strict experimental' if you want to use it.\n",
725                 codec_string, c->codec->name);
726         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
727         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
728             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
729                    codec_string, codec->name);
730         exit_program(1);
731     }
732 }
733
734 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
735 {
736     if(codec && codec->sample_fmts){
737         const enum AVSampleFormat *p= codec->sample_fmts;
738         for(; *p!=-1; p++){
739             if(*p == st->codec->sample_fmt)
740                 break;
741         }
742         if (*p == -1) {
743             av_log(NULL, AV_LOG_WARNING,
744                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
745                    av_get_sample_fmt_name(st->codec->sample_fmt),
746                    codec->name,
747                    av_get_sample_fmt_name(codec->sample_fmts[0]));
748             st->codec->sample_fmt = codec->sample_fmts[0];
749         }
750     }
751 }
752
753 /**
754  * Update the requested input sample format based on the output sample format.
755  * This is currently only used to request float output from decoders which
756  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
757  * Ideally this will be removed in the future when decoders do not do format
758  * conversion and only output in their native format.
759  */
760 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
761                               AVCodecContext *enc)
762 {
763     /* if sample formats match or a decoder sample format has already been
764        requested, just return */
765     if (enc->sample_fmt == dec->sample_fmt ||
766         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
767         return;
768
769     /* if decoder supports more than one output format */
770     if (dec_codec && dec_codec->sample_fmts &&
771         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
772         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
773         const enum AVSampleFormat *p;
774         int min_dec = -1, min_inc = -1;
775
776         /* find a matching sample format in the encoder */
777         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
778             if (*p == enc->sample_fmt) {
779                 dec->request_sample_fmt = *p;
780                 return;
781             } else if (*p > enc->sample_fmt) {
782                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
783             } else
784                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
785         }
786
787         /* if none match, provide the one that matches quality closest */
788         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
789                                   enc->sample_fmt - min_dec;
790     }
791 }
792
793 static void choose_sample_rate(AVStream *st, AVCodec *codec)
794 {
795     if(codec && codec->supported_samplerates){
796         const int *p= codec->supported_samplerates;
797         int best=0;
798         int best_dist=INT_MAX;
799         for(; *p; p++){
800             int dist= abs(st->codec->sample_rate - *p);
801             if(dist < best_dist){
802                 best_dist= dist;
803                 best= *p;
804             }
805         }
806         if(best_dist){
807             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
808         }
809         st->codec->sample_rate= best;
810     }
811 }
812
813 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
814 {
815     if(codec && codec->pix_fmts){
816         const enum PixelFormat *p= codec->pix_fmts;
817         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
818             if(st->codec->codec_id==CODEC_ID_MJPEG){
819                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
820             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
821                 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};
822             }
823         }
824         for (; *p != PIX_FMT_NONE; p++) {
825             if(*p == st->codec->pix_fmt)
826                 break;
827         }
828         if (*p == PIX_FMT_NONE) {
829             if(st->codec->pix_fmt != PIX_FMT_NONE)
830                 av_log(NULL, AV_LOG_WARNING,
831                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
832                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
833                         codec->name,
834                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
835             st->codec->pix_fmt = codec->pix_fmts[0];
836         }
837     }
838 }
839
840 static double
841 get_sync_ipts(const OutputStream *ost)
842 {
843     const InputStream *ist = ost->sync_ist;
844     OutputFile *of = &output_files[ost->file_index];
845     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
846 }
847
848 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
849     int ret;
850
851     while(bsfc){
852         AVPacket new_pkt= *pkt;
853         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
854                                           &new_pkt.data, &new_pkt.size,
855                                           pkt->data, pkt->size,
856                                           pkt->flags & AV_PKT_FLAG_KEY);
857         if(a>0){
858             av_free_packet(pkt);
859             new_pkt.destruct= av_destruct_packet;
860         } else if(a<0){
861             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
862                    bsfc->filter->name, pkt->stream_index,
863                    avctx->codec ? avctx->codec->name : "copy");
864             print_error("", a);
865             if (exit_on_error)
866                 exit_program(1);
867         }
868         *pkt= new_pkt;
869
870         bsfc= bsfc->next;
871     }
872
873     ret= av_interleaved_write_frame(s, pkt);
874     if(ret < 0){
875         print_error("av_interleaved_write_frame()", ret);
876         exit_program(1);
877     }
878 }
879
880 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
881 {
882     int fill_char = 0x00;
883     if (sample_fmt == AV_SAMPLE_FMT_U8)
884         fill_char = 0x80;
885     memset(buf, fill_char, size);
886 }
887
888 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
889                          InputStream *ist, AVFrame *decoded_frame)
890 {
891     uint8_t *buftmp;
892     int64_t audio_out_size, audio_buf_size;
893
894     int size_out, frame_bytes, ret, resample_changed;
895     AVCodecContext *enc= ost->st->codec;
896     AVCodecContext *dec= ist->st->codec;
897     int osize = av_get_bytes_per_sample(enc->sample_fmt);
898     int isize = av_get_bytes_per_sample(dec->sample_fmt);
899     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
900     uint8_t *buf = decoded_frame->data[0];
901     int size     = decoded_frame->nb_samples * dec->channels * isize;
902     int64_t allocated_for_size = size;
903
904 need_realloc:
905     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
906     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
907     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
908     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
909     audio_buf_size*= osize*enc->channels;
910
911     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
912     if(coded_bps > 8*osize)
913         audio_out_size= audio_out_size * coded_bps / (8*osize);
914     audio_out_size += FF_MIN_BUFFER_SIZE;
915
916     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
917         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
918         exit_program(1);
919     }
920
921     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
922     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
923     if (!audio_buf || !audio_out){
924         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
925         exit_program(1);
926     }
927
928     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
929         ost->audio_resample = 1;
930
931     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
932                        ost->resample_channels    != dec->channels   ||
933                        ost->resample_sample_rate != dec->sample_rate;
934
935     if ((ost->audio_resample && !ost->resample) || resample_changed) {
936         if (resample_changed) {
937             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",
938                    ist->file_index, ist->st->index,
939                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
940                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
941             ost->resample_sample_fmt  = dec->sample_fmt;
942             ost->resample_channels    = dec->channels;
943             ost->resample_sample_rate = dec->sample_rate;
944             if (ost->resample)
945                 audio_resample_close(ost->resample);
946         }
947         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
948         if (audio_sync_method <= 1 &&
949             ost->resample_sample_fmt  == enc->sample_fmt &&
950             ost->resample_channels    == enc->channels   &&
951             ost->resample_sample_rate == enc->sample_rate) {
952             ost->resample = NULL;
953             ost->audio_resample = 0;
954         } else if (ost->audio_resample) {
955             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
956                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
957             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
958                                                    enc->sample_rate, dec->sample_rate,
959                                                    enc->sample_fmt,  dec->sample_fmt,
960                                                    16, 10, 0, 0.8);
961             if (!ost->resample) {
962                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
963                        dec->channels, dec->sample_rate,
964                        enc->channels, enc->sample_rate);
965                 exit_program(1);
966             }
967         }
968     }
969
970 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
971     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
972         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
973         if (ost->reformat_ctx)
974             av_audio_convert_free(ost->reformat_ctx);
975         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
976                                                    dec->sample_fmt, 1, NULL, 0);
977         if (!ost->reformat_ctx) {
978             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
979                    av_get_sample_fmt_name(dec->sample_fmt),
980                    av_get_sample_fmt_name(enc->sample_fmt));
981             exit_program(1);
982         }
983         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
984     }
985
986     if(audio_sync_method){
987         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
988                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
989         int idelta = delta * dec->sample_rate / enc->sample_rate;
990         int byte_delta = idelta * isize * dec->channels;
991
992         //FIXME resample delay
993         if(fabs(delta) > 50){
994             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
995                 if(byte_delta < 0){
996                     byte_delta= FFMAX(byte_delta, -size);
997                     size += byte_delta;
998                     buf  -= byte_delta;
999                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
1000                            -byte_delta / (isize * dec->channels));
1001                     if(!size)
1002                         return;
1003                     ist->is_start=0;
1004                 }else{
1005                     static uint8_t *input_tmp= NULL;
1006                     input_tmp= av_realloc(input_tmp, byte_delta + size);
1007
1008                     if(byte_delta > allocated_for_size - size){
1009                         allocated_for_size= byte_delta + (int64_t)size;
1010                         goto need_realloc;
1011                     }
1012                     ist->is_start=0;
1013
1014                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1015                     memcpy(input_tmp + byte_delta, buf, size);
1016                     buf= input_tmp;
1017                     size += byte_delta;
1018                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1019                 }
1020             }else if(audio_sync_method>1){
1021                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
1022                 av_assert0(ost->audio_resample);
1023                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1024                        delta, comp, enc->sample_rate);
1025 //                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));
1026                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1027             }
1028         }
1029     }else
1030         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
1031                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
1032
1033     if (ost->audio_resample) {
1034         buftmp = audio_buf;
1035         size_out = audio_resample(ost->resample,
1036                                   (short *)buftmp, (short *)buf,
1037                                   size / (dec->channels * isize));
1038         size_out = size_out * enc->channels * osize;
1039     } else {
1040         buftmp = buf;
1041         size_out = size;
1042     }
1043
1044     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
1045         const void *ibuf[6]= {buftmp};
1046         void *obuf[6]= {audio_buf};
1047         int istride[6]= {isize};
1048         int ostride[6]= {osize};
1049         int len= size_out/istride[0];
1050         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
1051             printf("av_audio_convert() failed\n");
1052             if (exit_on_error)
1053                 exit_program(1);
1054             return;
1055         }
1056         buftmp = audio_buf;
1057         size_out = len*osize;
1058     }
1059
1060     /* now encode as many frames as possible */
1061     if (enc->frame_size > 1) {
1062         /* output resampled raw samples */
1063         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1064             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1065             exit_program(1);
1066         }
1067         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1068
1069         frame_bytes = enc->frame_size * osize * enc->channels;
1070
1071         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1072             AVPacket pkt;
1073             av_init_packet(&pkt);
1074
1075             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1076
1077             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1078
1079             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1080                                        (short *)audio_buf);
1081             if (ret < 0) {
1082                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1083                 exit_program(1);
1084             }
1085             audio_size += ret;
1086             pkt.stream_index= ost->index;
1087             pkt.data= audio_out;
1088             pkt.size= ret;
1089             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1090                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1091             pkt.flags |= AV_PKT_FLAG_KEY;
1092             write_frame(s, &pkt, enc, ost->bitstream_filters);
1093
1094             ost->sync_opts += enc->frame_size;
1095         }
1096     } else {
1097         AVPacket pkt;
1098         av_init_packet(&pkt);
1099
1100         ost->sync_opts += size_out / (osize * enc->channels);
1101
1102         /* output a pcm frame */
1103         /* determine the size of the coded buffer */
1104         size_out /= osize;
1105         if (coded_bps)
1106             size_out = size_out*coded_bps/8;
1107
1108         if(size_out > audio_out_size){
1109             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1110             exit_program(1);
1111         }
1112
1113         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1114         ret = avcodec_encode_audio(enc, audio_out, size_out,
1115                                    (short *)buftmp);
1116         if (ret < 0) {
1117             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1118             exit_program(1);
1119         }
1120         audio_size += ret;
1121         pkt.stream_index= ost->index;
1122         pkt.data= audio_out;
1123         pkt.size= ret;
1124         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1125             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1126         pkt.flags |= AV_PKT_FLAG_KEY;
1127         write_frame(s, &pkt, enc, ost->bitstream_filters);
1128     }
1129 }
1130
1131 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1132 {
1133     AVCodecContext *dec;
1134     AVPicture *picture2;
1135     AVPicture picture_tmp;
1136     uint8_t *buf = 0;
1137
1138     dec = ist->st->codec;
1139
1140     /* deinterlace : must be done before any resize */
1141     if (do_deinterlace) {
1142         int size;
1143
1144         /* create temporary picture */
1145         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1146         buf = av_malloc(size);
1147         if (!buf)
1148             return;
1149
1150         picture2 = &picture_tmp;
1151         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1152
1153         if(avpicture_deinterlace(picture2, picture,
1154                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1155             /* if error, do not deinterlace */
1156             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1157             av_free(buf);
1158             buf = NULL;
1159             picture2 = picture;
1160         }
1161     } else {
1162         picture2 = picture;
1163     }
1164
1165     if (picture != picture2)
1166         *picture = *picture2;
1167     *bufp = buf;
1168 }
1169
1170 static void do_subtitle_out(AVFormatContext *s,
1171                             OutputStream *ost,
1172                             InputStream *ist,
1173                             AVSubtitle *sub,
1174                             int64_t pts)
1175 {
1176     static uint8_t *subtitle_out = NULL;
1177     int subtitle_out_max_size = 1024 * 1024;
1178     int subtitle_out_size, nb, i;
1179     AVCodecContext *enc;
1180     AVPacket pkt;
1181
1182     if (pts == AV_NOPTS_VALUE) {
1183         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1184         if (exit_on_error)
1185             exit_program(1);
1186         return;
1187     }
1188
1189     enc = ost->st->codec;
1190
1191     if (!subtitle_out) {
1192         subtitle_out = av_malloc(subtitle_out_max_size);
1193     }
1194
1195     /* Note: DVB subtitle need one packet to draw them and one other
1196        packet to clear them */
1197     /* XXX: signal it in the codec context ? */
1198     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1199         nb = 2;
1200     else
1201         nb = 1;
1202
1203     for(i = 0; i < nb; i++) {
1204         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1205         // start_display_time is required to be 0
1206         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1207         sub->end_display_time -= sub->start_display_time;
1208         sub->start_display_time = 0;
1209         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1210                                                     subtitle_out_max_size, sub);
1211         if (subtitle_out_size < 0) {
1212             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1213             exit_program(1);
1214         }
1215
1216         av_init_packet(&pkt);
1217         pkt.stream_index = ost->index;
1218         pkt.data = subtitle_out;
1219         pkt.size = subtitle_out_size;
1220         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1221         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1222             /* XXX: the pts correction is handled here. Maybe handling
1223                it in the codec would be better */
1224             if (i == 0)
1225                 pkt.pts += 90 * sub->start_display_time;
1226             else
1227                 pkt.pts += 90 * sub->end_display_time;
1228         }
1229         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1230     }
1231 }
1232
1233 static int bit_buffer_size= 1024*256;
1234 static uint8_t *bit_buffer= NULL;
1235
1236 static void do_video_resample(OutputStream *ost,
1237                               InputStream *ist,
1238                               AVFrame *in_picture,
1239                               AVFrame **out_picture)
1240 {
1241     int resample_changed = 0;
1242     AVCodecContext *dec = ist->st->codec;
1243     *out_picture = in_picture;
1244
1245     resample_changed = ost->resample_width   != dec->width  ||
1246                        ost->resample_height  != dec->height ||
1247                        ost->resample_pix_fmt != dec->pix_fmt;
1248
1249     if (resample_changed) {
1250         av_log(NULL, AV_LOG_INFO,
1251                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1252                ist->file_index, ist->st->index,
1253                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1254                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1255         if(!ost->video_resample)
1256             ost->video_resample = 1;
1257     }
1258
1259 #if !CONFIG_AVFILTER
1260     if (ost->video_resample) {
1261         *out_picture = &ost->pict_tmp;
1262         if (resample_changed) {
1263             /* initialize a new scaler context */
1264             sws_freeContext(ost->img_resample_ctx);
1265             ost->img_resample_ctx = sws_getContext(
1266                 ist->st->codec->width,
1267                 ist->st->codec->height,
1268                 ist->st->codec->pix_fmt,
1269                 ost->st->codec->width,
1270                 ost->st->codec->height,
1271                 ost->st->codec->pix_fmt,
1272                 ost->sws_flags, NULL, NULL, NULL);
1273             if (ost->img_resample_ctx == NULL) {
1274                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1275                 exit_program(1);
1276             }
1277         }
1278         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1279               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1280     }
1281 #else
1282     if (resample_changed) {
1283         avfilter_graph_free(&ost->graph);
1284         if (configure_video_filters(ist, ost)) {
1285             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1286             exit_program(1);
1287         }
1288     }
1289 #endif
1290     if (resample_changed) {
1291         ost->resample_width   = dec->width;
1292         ost->resample_height  = dec->height;
1293         ost->resample_pix_fmt = dec->pix_fmt;
1294     }
1295 }
1296
1297
1298 static void do_video_out(AVFormatContext *s,
1299                          OutputStream *ost,
1300                          InputStream *ist,
1301                          AVFrame *in_picture,
1302                          int *frame_size, float quality)
1303 {
1304     int nb_frames, i, ret, format_video_sync;
1305     AVFrame *final_picture;
1306     AVCodecContext *enc;
1307     double sync_ipts;
1308
1309     enc = ost->st->codec;
1310
1311     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1312
1313     /* by default, we output a single frame */
1314     nb_frames = 1;
1315
1316     *frame_size = 0;
1317
1318     format_video_sync = video_sync_method;
1319     if (format_video_sync < 0)
1320         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1321                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1322
1323     if (format_video_sync) {
1324         double vdelta = sync_ipts - ost->sync_opts;
1325         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1326         if (vdelta < -1.1)
1327             nb_frames = 0;
1328         else if (format_video_sync == 2) {
1329             if(vdelta<=-0.6){
1330                 nb_frames=0;
1331             }else if(vdelta>0.6)
1332                 ost->sync_opts= lrintf(sync_ipts);
1333         }else if (vdelta > 1.1)
1334             nb_frames = lrintf(vdelta);
1335 //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);
1336         if (nb_frames == 0){
1337             ++nb_frames_drop;
1338             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1339         }else if (nb_frames > 1) {
1340             nb_frames_dup += nb_frames - 1;
1341             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1342         }
1343     }else
1344         ost->sync_opts= lrintf(sync_ipts);
1345
1346     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1347     if (nb_frames <= 0)
1348         return;
1349
1350     do_video_resample(ost, ist, in_picture, &final_picture);
1351
1352     /* duplicates frame if needed */
1353     for(i=0;i<nb_frames;i++) {
1354         AVPacket pkt;
1355         av_init_packet(&pkt);
1356         pkt.stream_index= ost->index;
1357
1358         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1359             enc->codec->id == CODEC_ID_RAWVIDEO) {
1360             /* raw pictures are written as AVPicture structure to
1361                avoid any copies. We support temporarily the older
1362                method. */
1363             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1364             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1365             pkt.data= (uint8_t *)final_picture;
1366             pkt.size=  sizeof(AVPicture);
1367             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1368             pkt.flags |= AV_PKT_FLAG_KEY;
1369
1370             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1371         } else {
1372             AVFrame big_picture;
1373
1374             big_picture= *final_picture;
1375             /* better than nothing: use input picture interlaced
1376                settings */
1377             big_picture.interlaced_frame = in_picture->interlaced_frame;
1378             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1379                 if (ost->top_field_first == -1)
1380                     big_picture.top_field_first = in_picture->top_field_first;
1381                 else
1382                     big_picture.top_field_first = !!ost->top_field_first;
1383             }
1384
1385             /* handles same_quant here. This is not correct because it may
1386                not be a global option */
1387             big_picture.quality = quality;
1388             if (!enc->me_threshold)
1389                 big_picture.pict_type = 0;
1390 //            big_picture.pts = AV_NOPTS_VALUE;
1391             big_picture.pts= ost->sync_opts;
1392 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1393 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1394             if (ost->forced_kf_index < ost->forced_kf_count &&
1395                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1396                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1397                 ost->forced_kf_index++;
1398             }
1399             ret = avcodec_encode_video(enc,
1400                                        bit_buffer, bit_buffer_size,
1401                                        &big_picture);
1402             if (ret < 0) {
1403                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1404                 exit_program(1);
1405             }
1406
1407             if(ret>0){
1408                 pkt.data= bit_buffer;
1409                 pkt.size= ret;
1410                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1411                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1412 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1413    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1414    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1415
1416                 if(enc->coded_frame->key_frame)
1417                     pkt.flags |= AV_PKT_FLAG_KEY;
1418                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1419                 *frame_size = ret;
1420                 video_size += ret;
1421                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1422                 //        enc->frame_number-1, ret, enc->pict_type);
1423                 /* if two pass, output log */
1424                 if (ost->logfile && enc->stats_out) {
1425                     fprintf(ost->logfile, "%s", enc->stats_out);
1426                 }
1427             }
1428         }
1429         ost->sync_opts++;
1430         ost->frame_number++;
1431     }
1432 }
1433
1434 static double psnr(double d){
1435     return -10.0*log(d)/log(10.0);
1436 }
1437
1438 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1439                            int frame_size)
1440 {
1441     AVCodecContext *enc;
1442     int frame_number;
1443     double ti1, bitrate, avg_bitrate;
1444
1445     /* this is executed just the first time do_video_stats is called */
1446     if (!vstats_file) {
1447         vstats_file = fopen(vstats_filename, "w");
1448         if (!vstats_file) {
1449             perror("fopen");
1450             exit_program(1);
1451         }
1452     }
1453
1454     enc = ost->st->codec;
1455     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1456         frame_number = ost->frame_number;
1457         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1458         if (enc->flags&CODEC_FLAG_PSNR)
1459             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1460
1461         fprintf(vstats_file,"f_size= %6d ", frame_size);
1462         /* compute pts value */
1463         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1464         if (ti1 < 0.01)
1465             ti1 = 0.01;
1466
1467         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1468         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1469         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1470             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1471         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1472     }
1473 }
1474
1475 static void print_report(OutputFile *output_files,
1476                          OutputStream *ost_table, int nb_ostreams,
1477                          int is_last_report, int64_t timer_start)
1478 {
1479     char buf[1024];
1480     OutputStream *ost;
1481     AVFormatContext *oc;
1482     int64_t total_size;
1483     AVCodecContext *enc;
1484     int frame_number, vid, i;
1485     double bitrate, ti1, pts;
1486     static int64_t last_time = -1;
1487     static int qp_histogram[52];
1488
1489     if (!print_stats && !is_last_report)
1490         return;
1491
1492     if (!is_last_report) {
1493         int64_t cur_time;
1494         /* display the report every 0.5 seconds */
1495         cur_time = av_gettime();
1496         if (last_time == -1) {
1497             last_time = cur_time;
1498             return;
1499         }
1500         if ((cur_time - last_time) < 500000)
1501             return;
1502         last_time = cur_time;
1503     }
1504
1505
1506     oc = output_files[0].ctx;
1507
1508     total_size = avio_size(oc->pb);
1509     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1510         total_size= avio_tell(oc->pb);
1511
1512     buf[0] = '\0';
1513     ti1 = 1e10;
1514     vid = 0;
1515     for(i=0;i<nb_ostreams;i++) {
1516         float q = -1;
1517         ost = &ost_table[i];
1518         enc = ost->st->codec;
1519         if (!ost->stream_copy && enc->coded_frame)
1520             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1521         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1522             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1523         }
1524         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1525             float t = (av_gettime()-timer_start) / 1000000.0;
1526
1527             frame_number = ost->frame_number;
1528             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1529                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1530             if(is_last_report)
1531                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1532             if(qp_hist){
1533                 int j;
1534                 int qp = lrintf(q);
1535                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1536                     qp_histogram[qp]++;
1537                 for(j=0; j<32; j++)
1538                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1539             }
1540             if (enc->flags&CODEC_FLAG_PSNR){
1541                 int j;
1542                 double error, error_sum=0;
1543                 double scale, scale_sum=0;
1544                 char type[3]= {'Y','U','V'};
1545                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1546                 for(j=0; j<3; j++){
1547                     if(is_last_report){
1548                         error= enc->error[j];
1549                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1550                     }else{
1551                         error= enc->coded_frame->error[j];
1552                         scale= enc->width*enc->height*255.0*255.0;
1553                     }
1554                     if(j) scale/=4;
1555                     error_sum += error;
1556                     scale_sum += scale;
1557                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1558                 }
1559                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1560             }
1561             vid = 1;
1562         }
1563         /* compute min output value */
1564         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1565         if ((pts < ti1) && (pts > 0))
1566             ti1 = pts;
1567     }
1568     if (ti1 < 0.01)
1569         ti1 = 0.01;
1570
1571     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1572
1573     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1574             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1575             (double)total_size / 1024, ti1, bitrate);
1576
1577     if (nb_frames_dup || nb_frames_drop)
1578         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1579                 nb_frames_dup, nb_frames_drop);
1580
1581     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1582
1583     fflush(stderr);
1584
1585     if (is_last_report) {
1586         int64_t raw= audio_size + video_size + extra_size;
1587         av_log(NULL, AV_LOG_INFO, "\n");
1588         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1589                video_size/1024.0,
1590                audio_size/1024.0,
1591                extra_size/1024.0,
1592                100.0*(total_size - raw)/raw
1593         );
1594     }
1595 }
1596
1597 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1598 {
1599     int i, ret;
1600
1601     for (i = 0; i < nb_ostreams; i++) {
1602         OutputStream   *ost = &ost_table[i];
1603         AVCodecContext *enc = ost->st->codec;
1604         AVFormatContext *os = output_files[ost->file_index].ctx;
1605
1606         if (!ost->encoding_needed)
1607             continue;
1608
1609         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1610             continue;
1611         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1612             continue;
1613
1614         for(;;) {
1615             AVPacket pkt;
1616             int fifo_bytes;
1617             av_init_packet(&pkt);
1618             pkt.stream_index= ost->index;
1619
1620             switch (ost->st->codec->codec_type) {
1621             case AVMEDIA_TYPE_AUDIO:
1622                 fifo_bytes = av_fifo_size(ost->fifo);
1623                 ret = 0;
1624                 /* encode any samples remaining in fifo */
1625                 if (fifo_bytes > 0) {
1626                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1627                     int fs_tmp = enc->frame_size;
1628
1629                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1630                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1631                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1632                     } else { /* pad */
1633                         int frame_bytes = enc->frame_size*osize*enc->channels;
1634                         if (allocated_audio_buf_size < frame_bytes)
1635                             exit_program(1);
1636                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1637                     }
1638
1639                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1640                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1641                                               ost->st->time_base.num, enc->sample_rate);
1642                     enc->frame_size = fs_tmp;
1643                 }
1644                 if (ret <= 0) {
1645                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1646                 }
1647                 if (ret < 0) {
1648                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1649                     exit_program(1);
1650                 }
1651                 audio_size += ret;
1652                 pkt.flags |= AV_PKT_FLAG_KEY;
1653                 break;
1654             case AVMEDIA_TYPE_VIDEO:
1655                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1656                 if (ret < 0) {
1657                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1658                     exit_program(1);
1659                 }
1660                 video_size += ret;
1661                 if(enc->coded_frame && enc->coded_frame->key_frame)
1662                     pkt.flags |= AV_PKT_FLAG_KEY;
1663                 if (ost->logfile && enc->stats_out) {
1664                     fprintf(ost->logfile, "%s", enc->stats_out);
1665                 }
1666                 break;
1667             default:
1668                 ret=-1;
1669             }
1670
1671             if (ret <= 0)
1672                 break;
1673             pkt.data = bit_buffer;
1674             pkt.size = ret;
1675             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1676                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1677             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1678         }
1679     }
1680 }
1681
1682 /*
1683  * Check whether a packet from ist should be written into ost at this time
1684  */
1685 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1686 {
1687     OutputFile *of = &output_files[ost->file_index];
1688     int ist_index  = ist - input_streams;
1689
1690     if (ost->source_index != ist_index)
1691         return 0;
1692
1693     if (of->start_time && ist->pts < of->start_time)
1694         return 0;
1695
1696     if (of->recording_time != INT64_MAX &&
1697         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1698                       (AVRational){1, 1000000}) >= 0) {
1699         ost->is_past_recording_time = 1;
1700         return 0;
1701     }
1702
1703     return 1;
1704 }
1705
1706 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1707 {
1708     OutputFile *of = &output_files[ost->file_index];
1709     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1710     AVPacket opkt;
1711
1712     av_init_packet(&opkt);
1713
1714     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1715         !ost->copy_initial_nonkeyframes)
1716         return;
1717
1718     /* force the input stream PTS */
1719     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1720         audio_size += pkt->size;
1721     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1722         video_size += pkt->size;
1723         ost->sync_opts++;
1724     }
1725
1726     opkt.stream_index = ost->index;
1727     if (pkt->pts != AV_NOPTS_VALUE)
1728         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1729     else
1730         opkt.pts = AV_NOPTS_VALUE;
1731
1732     if (pkt->dts == AV_NOPTS_VALUE)
1733         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1734     else
1735         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1736     opkt.dts -= ost_tb_start_time;
1737
1738     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1739     opkt.flags    = pkt->flags;
1740
1741     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1742     if(   ost->st->codec->codec_id != CODEC_ID_H264
1743        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1744        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1745        ) {
1746         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1747             opkt.destruct = av_destruct_packet;
1748     } else {
1749         opkt.data = pkt->data;
1750         opkt.size = pkt->size;
1751     }
1752
1753     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1754     ost->st->codec->frame_number++;
1755     ost->frame_number++;
1756     av_free_packet(&opkt);
1757 }
1758
1759 static void rate_emu_sleep(InputStream *ist)
1760 {
1761     if (input_files[ist->file_index].rate_emu) {
1762         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1763         int64_t now = av_gettime() - ist->start;
1764         if (pts > now)
1765             usleep(pts - now);
1766     }
1767 }
1768
1769 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1770 {
1771     AVFrame *decoded_frame;
1772     AVCodecContext *avctx = ist->st->codec;
1773     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1774     int i, ret;
1775
1776     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1777         return AVERROR(ENOMEM);
1778     else
1779         avcodec_get_frame_defaults(ist->decoded_frame);
1780     decoded_frame = ist->decoded_frame;
1781
1782     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1783     if (ret < 0) {
1784         return ret;
1785     }
1786
1787     if (!*got_output) {
1788         /* no audio frame */
1789         return ret;
1790     }
1791
1792     /* if the decoder provides a pts, use it instead of the last packet pts.
1793        the decoder could be delaying output by a packet or more. */
1794     if (decoded_frame->pts != AV_NOPTS_VALUE)
1795         ist->next_pts = decoded_frame->pts;
1796
1797     /* increment next_pts to use for the case where the input stream does not
1798        have timestamps or there are multiple frames in the packet */
1799     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1800                      avctx->sample_rate;
1801
1802     // preprocess audio (volume)
1803     if (audio_volume != 256) {
1804         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1805         void *samples = decoded_frame->data[0];
1806         switch (avctx->sample_fmt) {
1807         case AV_SAMPLE_FMT_U8:
1808         {
1809             uint8_t *volp = samples;
1810             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1811                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1812                 *volp++ = av_clip_uint8(v);
1813             }
1814             break;
1815         }
1816         case AV_SAMPLE_FMT_S16:
1817         {
1818             int16_t *volp = samples;
1819             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1820                 int v = ((*volp) * audio_volume + 128) >> 8;
1821                 *volp++ = av_clip_int16(v);
1822             }
1823             break;
1824         }
1825         case AV_SAMPLE_FMT_S32:
1826         {
1827             int32_t *volp = samples;
1828             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1829                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1830                 *volp++ = av_clipl_int32(v);
1831             }
1832             break;
1833         }
1834         case AV_SAMPLE_FMT_FLT:
1835         {
1836             float *volp = samples;
1837             float scale = audio_volume / 256.f;
1838             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1839                 *volp++ *= scale;
1840             }
1841             break;
1842         }
1843         case AV_SAMPLE_FMT_DBL:
1844         {
1845             double *volp = samples;
1846             double scale = audio_volume / 256.;
1847             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1848                 *volp++ *= scale;
1849             }
1850             break;
1851         }
1852         default:
1853             av_log(NULL, AV_LOG_FATAL,
1854                    "Audio volume adjustment on sample format %s is not supported.\n",
1855                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1856             exit_program(1);
1857         }
1858     }
1859
1860     rate_emu_sleep(ist);
1861
1862     for (i = 0; i < nb_output_streams; i++) {
1863         OutputStream *ost = &output_streams[i];
1864
1865         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1866             continue;
1867         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1868     }
1869
1870     return ret;
1871 }
1872
1873 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1874 {
1875     AVFrame *decoded_frame, *filtered_frame = NULL;
1876     void *buffer_to_free = NULL;
1877     int i, ret = 0;
1878     float quality;
1879 #if CONFIG_AVFILTER
1880     int frame_available = 1;
1881 #endif
1882
1883     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1884         return AVERROR(ENOMEM);
1885     else
1886         avcodec_get_frame_defaults(ist->decoded_frame);
1887     decoded_frame = ist->decoded_frame;
1888     pkt->pts  = *pkt_pts;
1889     pkt->dts  = ist->pts;
1890     *pkt_pts  = AV_NOPTS_VALUE;
1891
1892     ret = avcodec_decode_video2(ist->st->codec,
1893                                 decoded_frame, got_output, pkt);
1894     if (ret < 0)
1895         return ret;
1896
1897     quality = same_quant ? decoded_frame->quality : 0;
1898     if (!*got_output) {
1899         /* no picture yet */
1900         return ret;
1901     }
1902     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1903                                                  decoded_frame->pkt_dts);
1904     if (pkt->duration)
1905         ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1906     else if (ist->st->codec->time_base.num != 0) {
1907         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1908                                            ist->st->codec->ticks_per_frame;
1909         ist->next_pts += ((int64_t)AV_TIME_BASE *
1910                           ist->st->codec->time_base.num * ticks) /
1911                           ist->st->codec->time_base.den;
1912     }
1913     pkt->size = 0;
1914     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1915
1916     rate_emu_sleep(ist);
1917
1918     for (i = 0; i < nb_output_streams; i++) {
1919         OutputStream *ost = &output_streams[i];
1920         int frame_size;
1921
1922         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1923             continue;
1924
1925 #if CONFIG_AVFILTER
1926         if (ist->st->sample_aspect_ratio.num)
1927             decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1928         if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1929             FrameBuffer      *buf = decoded_frame->opaque;
1930             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1931                                         decoded_frame->data, decoded_frame->linesize,
1932                                         AV_PERM_READ | AV_PERM_PRESERVE,
1933                                         ist->st->codec->width, ist->st->codec->height,
1934                                         ist->st->codec->pix_fmt);
1935
1936             avfilter_copy_frame_props(fb, decoded_frame);
1937             fb->pts                 = ist->pts;
1938             fb->buf->priv           = buf;
1939             fb->buf->free           = filter_release_buffer;
1940
1941             buf->refcount++;
1942             av_buffersrc_buffer(ost->input_video_filter, fb);
1943         } else
1944             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame,
1945                                      ist->pts, decoded_frame->sample_aspect_ratio);
1946
1947         if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1948             av_free(buffer_to_free);
1949             return AVERROR(ENOMEM);
1950         } else
1951             avcodec_get_frame_defaults(ist->filtered_frame);
1952         filtered_frame = ist->filtered_frame;
1953
1954         frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1955         while (frame_available) {
1956             AVRational ist_pts_tb;
1957             if (ost->output_video_filter)
1958                 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1959             if (ost->picref)
1960                 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1961             if (ost->picref->video && !ost->frame_aspect_ratio)
1962                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1963 #else
1964             filtered_frame = decoded_frame;
1965 #endif
1966
1967             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1968                          same_quant ? quality : ost->st->codec->global_quality);
1969             if (vstats_filename && frame_size)
1970                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1971 #if CONFIG_AVFILTER
1972             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1973             if (ost->picref)
1974                 avfilter_unref_buffer(ost->picref);
1975         }
1976 #endif
1977     }
1978
1979     av_free(buffer_to_free);
1980     return ret;
1981 }
1982
1983 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1984 {
1985     AVSubtitle subtitle;
1986     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1987                                           &subtitle, got_output, pkt);
1988     if (ret < 0)
1989         return ret;
1990     if (!*got_output)
1991         return ret;
1992
1993     rate_emu_sleep(ist);
1994
1995     for (i = 0; i < nb_output_streams; i++) {
1996         OutputStream *ost = &output_streams[i];
1997
1998         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1999             continue;
2000
2001         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
2002     }
2003
2004     avsubtitle_free(&subtitle);
2005     return ret;
2006 }
2007
2008 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2009 static int output_packet(InputStream *ist,
2010                          OutputStream *ost_table, int nb_ostreams,
2011                          const AVPacket *pkt)
2012 {
2013     int i;
2014     int got_output;
2015     int64_t pkt_pts = AV_NOPTS_VALUE;
2016     AVPacket avpkt;
2017
2018     if (ist->next_pts == AV_NOPTS_VALUE)
2019         ist->next_pts = ist->pts;
2020
2021     if (pkt == NULL) {
2022         /* EOF handling */
2023         av_init_packet(&avpkt);
2024         avpkt.data = NULL;
2025         avpkt.size = 0;
2026         goto handle_eof;
2027     } else {
2028         avpkt = *pkt;
2029     }
2030
2031     if(pkt->dts != AV_NOPTS_VALUE)
2032         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2033     if(pkt->pts != AV_NOPTS_VALUE)
2034         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2035
2036     //while we have more to decode or while the decoder did output something on EOF
2037     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2038         int ret = 0;
2039     handle_eof:
2040
2041         ist->pts = ist->next_pts;
2042
2043         if (avpkt.size && avpkt.size != pkt->size) {
2044             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2045                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2046             ist->showed_multi_packet_warning = 1;
2047         }
2048
2049         switch(ist->st->codec->codec_type) {
2050         case AVMEDIA_TYPE_AUDIO:
2051             ret = transcode_audio    (ist, &avpkt, &got_output);
2052             break;
2053         case AVMEDIA_TYPE_VIDEO:
2054             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2055             break;
2056         case AVMEDIA_TYPE_SUBTITLE:
2057             ret = transcode_subtitles(ist, &avpkt, &got_output);
2058             break;
2059         default:
2060             return -1;
2061         }
2062
2063         if (ret < 0)
2064             return ret;
2065         // touch data and size only if not EOF
2066         if (pkt) {
2067             avpkt.data += ret;
2068             avpkt.size -= ret;
2069         }
2070         if (!got_output) {
2071             continue;
2072         }
2073     }
2074
2075     /* handle stream copy */
2076     if (!ist->decoding_needed) {
2077         rate_emu_sleep(ist);
2078         ist->pts = ist->next_pts;
2079         switch (ist->st->codec->codec_type) {
2080         case AVMEDIA_TYPE_AUDIO:
2081             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2082                              ist->st->codec->sample_rate;
2083             break;
2084         case AVMEDIA_TYPE_VIDEO:
2085             if (ist->st->codec->time_base.num != 0) {
2086                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2087                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2088                                   ist->st->codec->time_base.num * ticks) /
2089                                   ist->st->codec->time_base.den;
2090             }
2091             break;
2092         }
2093     }
2094     for (i = 0; pkt && i < nb_ostreams; i++) {
2095         OutputStream *ost = &ost_table[i];
2096
2097         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2098             continue;
2099
2100         do_streamcopy(ist, ost, pkt);
2101     }
2102
2103     return 0;
2104 }
2105
2106 static void print_sdp(OutputFile *output_files, int n)
2107 {
2108     char sdp[2048];
2109     int i;
2110     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2111
2112     if (!avc)
2113         exit_program(1);
2114     for (i = 0; i < n; i++)
2115         avc[i] = output_files[i].ctx;
2116
2117     av_sdp_create(avc, n, sdp, sizeof(sdp));
2118     printf("SDP:\n%s\n", sdp);
2119     fflush(stdout);
2120     av_freep(&avc);
2121 }
2122
2123 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2124                              char *error, int error_len)
2125 {
2126     int i;
2127     InputStream *ist = &input_streams[ist_index];
2128     if (ist->decoding_needed) {
2129         AVCodec *codec = ist->dec;
2130         if (!codec) {
2131             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2132                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
2133             return AVERROR(EINVAL);
2134         }
2135
2136         /* update requested sample format for the decoder based on the
2137            corresponding encoder sample format */
2138         for (i = 0; i < nb_output_streams; i++) {
2139             OutputStream *ost = &output_streams[i];
2140             if (ost->source_index == ist_index) {
2141                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2142                 break;
2143             }
2144         }
2145
2146         if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2147             ist->st->codec->get_buffer     = codec_get_buffer;
2148             ist->st->codec->release_buffer = codec_release_buffer;
2149             ist->st->codec->opaque         = ist;
2150         }
2151
2152         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2153             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2154                     ist->file_index, ist->st->index);
2155             return AVERROR(EINVAL);
2156         }
2157         assert_codec_experimental(ist->st->codec, 0);
2158         assert_avoptions(ist->opts);
2159     }
2160
2161     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;
2162     ist->next_pts = AV_NOPTS_VALUE;
2163     init_pts_correction(&ist->pts_ctx);
2164     ist->is_start = 1;
2165
2166     return 0;
2167 }
2168
2169 static int transcode_init(OutputFile *output_files,
2170                           int nb_output_files,
2171                           InputFile *input_files,
2172                           int nb_input_files)
2173 {
2174     int ret = 0, i, j, k;
2175     AVFormatContext *oc;
2176     AVCodecContext *codec, *icodec;
2177     OutputStream *ost;
2178     InputStream *ist;
2179     char error[1024];
2180     int want_sdp = 1;
2181
2182     /* init framerate emulation */
2183     for (i = 0; i < nb_input_files; i++) {
2184         InputFile *ifile = &input_files[i];
2185         if (ifile->rate_emu)
2186             for (j = 0; j < ifile->nb_streams; j++)
2187                 input_streams[j + ifile->ist_index].start = av_gettime();
2188     }
2189
2190     /* output stream init */
2191     for (i = 0; i < nb_output_files; i++) {
2192         oc = output_files[i].ctx;
2193         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2194             av_dump_format(oc, i, oc->filename, 1);
2195             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2196             return AVERROR(EINVAL);
2197         }
2198     }
2199
2200     /* for each output stream, we compute the right encoding parameters */
2201     for (i = 0; i < nb_output_streams; i++) {
2202         ost = &output_streams[i];
2203         oc  = output_files[ost->file_index].ctx;
2204         ist = &input_streams[ost->source_index];
2205
2206         if (ost->attachment_filename)
2207             continue;
2208
2209         codec  = ost->st->codec;
2210         icodec = ist->st->codec;
2211
2212         ost->st->disposition          = ist->st->disposition;
2213         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2214         codec->chroma_sample_location = icodec->chroma_sample_location;
2215
2216         if (ost->stream_copy) {
2217             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2218
2219             if (extra_size > INT_MAX) {
2220                 return AVERROR(EINVAL);
2221             }
2222
2223             /* if stream_copy is selected, no need to decode or encode */
2224             codec->codec_id   = icodec->codec_id;
2225             codec->codec_type = icodec->codec_type;
2226
2227             if (!codec->codec_tag) {
2228                 if (!oc->oformat->codec_tag ||
2229                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2230                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2231                     codec->codec_tag = icodec->codec_tag;
2232             }
2233
2234             codec->bit_rate       = icodec->bit_rate;
2235             codec->rc_max_rate    = icodec->rc_max_rate;
2236             codec->rc_buffer_size = icodec->rc_buffer_size;
2237             codec->field_order    = icodec->field_order;
2238             codec->extradata      = av_mallocz(extra_size);
2239             if (!codec->extradata) {
2240                 return AVERROR(ENOMEM);
2241             }
2242             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2243             codec->extradata_size = icodec->extradata_size;
2244             if (!copy_tb) {
2245                 codec->time_base      = icodec->time_base;
2246                 codec->time_base.num *= icodec->ticks_per_frame;
2247                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2248                           codec->time_base.num, codec->time_base.den, INT_MAX);
2249             } else
2250                 codec->time_base = ist->st->time_base;
2251
2252             switch(codec->codec_type) {
2253             case AVMEDIA_TYPE_AUDIO:
2254                 if(audio_volume != 256) {
2255                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2256                     exit_program(1);
2257                 }
2258                 codec->channel_layout     = icodec->channel_layout;
2259                 codec->sample_rate        = icodec->sample_rate;
2260                 codec->channels           = icodec->channels;
2261                 codec->frame_size         = icodec->frame_size;
2262                 codec->audio_service_type = icodec->audio_service_type;
2263                 codec->block_align        = icodec->block_align;
2264                 break;
2265             case AVMEDIA_TYPE_VIDEO:
2266                 codec->pix_fmt            = icodec->pix_fmt;
2267                 codec->width              = icodec->width;
2268                 codec->height             = icodec->height;
2269                 codec->has_b_frames       = icodec->has_b_frames;
2270                 if (!codec->sample_aspect_ratio.num) {
2271                     codec->sample_aspect_ratio   =
2272                     ost->st->sample_aspect_ratio =
2273                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2274                         ist->st->codec->sample_aspect_ratio.num ?
2275                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2276                 }
2277                 break;
2278             case AVMEDIA_TYPE_SUBTITLE:
2279                 codec->width  = icodec->width;
2280                 codec->height = icodec->height;
2281                 break;
2282             case AVMEDIA_TYPE_DATA:
2283             case AVMEDIA_TYPE_ATTACHMENT:
2284                 break;
2285             default:
2286                 abort();
2287             }
2288         } else {
2289             if (!ost->enc)
2290                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2291
2292             ist->decoding_needed = 1;
2293             ost->encoding_needed = 1;
2294
2295             switch(codec->codec_type) {
2296             case AVMEDIA_TYPE_AUDIO:
2297                 ost->fifo = av_fifo_alloc(1024);
2298                 if (!ost->fifo) {
2299                     return AVERROR(ENOMEM);
2300                 }
2301                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2302
2303                 if (!codec->sample_rate)
2304                     codec->sample_rate = icodec->sample_rate;
2305                 choose_sample_rate(ost->st, ost->enc);
2306                 codec->time_base = (AVRational){1, codec->sample_rate};
2307
2308                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2309                     codec->sample_fmt = icodec->sample_fmt;
2310                 choose_sample_fmt(ost->st, ost->enc);
2311
2312                 if (!codec->channels)
2313                     codec->channels = icodec->channels;
2314                 codec->channel_layout = icodec->channel_layout;
2315                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2316                     codec->channel_layout = 0;
2317
2318                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2319                 icodec->request_channels  = codec-> channels;
2320                 ost->resample_sample_fmt  = icodec->sample_fmt;
2321                 ost->resample_sample_rate = icodec->sample_rate;
2322                 ost->resample_channels    = icodec->channels;
2323                 break;
2324             case AVMEDIA_TYPE_VIDEO:
2325                 if (codec->pix_fmt == PIX_FMT_NONE)
2326                     codec->pix_fmt = icodec->pix_fmt;
2327                 choose_pixel_fmt(ost->st, ost->enc);
2328
2329                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2330                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2331                     exit_program(1);
2332                 }
2333
2334                 if (!codec->width || !codec->height) {
2335                     codec->width  = icodec->width;
2336                     codec->height = icodec->height;
2337                 }
2338
2339                 ost->video_resample = codec->width   != icodec->width  ||
2340                                       codec->height  != icodec->height ||
2341                                       codec->pix_fmt != icodec->pix_fmt;
2342                 if (ost->video_resample) {
2343 #if !CONFIG_AVFILTER
2344                     avcodec_get_frame_defaults(&ost->pict_tmp);
2345                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2346                                        codec->width, codec->height)) {
2347                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2348                         exit_program(1);
2349                     }
2350                     ost->img_resample_ctx = sws_getContext(
2351                         icodec->width,
2352                         icodec->height,
2353                         icodec->pix_fmt,
2354                         codec->width,
2355                         codec->height,
2356                         codec->pix_fmt,
2357                         ost->sws_flags, NULL, NULL, NULL);
2358                     if (ost->img_resample_ctx == NULL) {
2359                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2360                         exit_program(1);
2361                     }
2362 #endif
2363                     codec->bits_per_raw_sample= 0;
2364                 }
2365
2366                 ost->resample_height  = icodec->height;
2367                 ost->resample_width   = icodec->width;
2368                 ost->resample_pix_fmt = icodec->pix_fmt;
2369
2370                 if (!ost->frame_rate.num)
2371                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2372                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2373                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2374                     ost->frame_rate = ost->enc->supported_framerates[idx];
2375                 }
2376                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2377
2378 #if CONFIG_AVFILTER
2379                 if (configure_video_filters(ist, ost)) {
2380                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2381                     exit(1);
2382                 }
2383 #endif
2384                 break;
2385             case AVMEDIA_TYPE_SUBTITLE:
2386                 break;
2387             default:
2388                 abort();
2389                 break;
2390             }
2391             /* two pass mode */
2392             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2393                 char logfilename[1024];
2394                 FILE *f;
2395
2396                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2397                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2398                          i);
2399                 if (codec->flags & CODEC_FLAG_PASS1) {
2400                     f = fopen(logfilename, "wb");
2401                     if (!f) {
2402                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2403                                logfilename, strerror(errno));
2404                         exit_program(1);
2405                     }
2406                     ost->logfile = f;
2407                 } else {
2408                     char  *logbuffer;
2409                     size_t logbuffer_size;
2410                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2411                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2412                                logfilename);
2413                         exit_program(1);
2414                     }
2415                     codec->stats_in = logbuffer;
2416                 }
2417             }
2418         }
2419         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2420             int        size = codec->width * codec->height;
2421             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 200);
2422         }
2423     }
2424
2425     if (!bit_buffer)
2426         bit_buffer = av_malloc(bit_buffer_size);
2427     if (!bit_buffer) {
2428         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2429                bit_buffer_size);
2430         return AVERROR(ENOMEM);
2431     }
2432
2433     /* open each encoder */
2434     for (i = 0; i < nb_output_streams; i++) {
2435         ost = &output_streams[i];
2436         if (ost->encoding_needed) {
2437             AVCodec      *codec = ost->enc;
2438             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2439             if (!codec) {
2440                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2441                          ost->st->codec->codec_id, ost->file_index, ost->index);
2442                 ret = AVERROR(EINVAL);
2443                 goto dump_format;
2444             }
2445             if (dec->subtitle_header) {
2446                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2447                 if (!ost->st->codec->subtitle_header) {
2448                     ret = AVERROR(ENOMEM);
2449                     goto dump_format;
2450                 }
2451                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2452                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2453             }
2454             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2455                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2456                         ost->file_index, ost->index);
2457                 ret = AVERROR(EINVAL);
2458                 goto dump_format;
2459             }
2460             assert_codec_experimental(ost->st->codec, 1);
2461             assert_avoptions(ost->opts);
2462             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2463                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2464                                              "It takes bits/s as argument, not kbits/s\n");
2465             extra_size += ost->st->codec->extradata_size;
2466
2467             if (ost->st->codec->me_threshold)
2468                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2469         }
2470     }
2471
2472     /* init input streams */
2473     for (i = 0; i < nb_input_streams; i++)
2474         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2475             goto dump_format;
2476
2477     /* discard unused programs */
2478     for (i = 0; i < nb_input_files; i++) {
2479         InputFile *ifile = &input_files[i];
2480         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2481             AVProgram *p = ifile->ctx->programs[j];
2482             int discard  = AVDISCARD_ALL;
2483
2484             for (k = 0; k < p->nb_stream_indexes; k++)
2485                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2486                     discard = AVDISCARD_DEFAULT;
2487                     break;
2488                 }
2489             p->discard = discard;
2490         }
2491     }
2492
2493     /* open files and write file headers */
2494     for (i = 0; i < nb_output_files; i++) {
2495         oc = output_files[i].ctx;
2496         oc->interrupt_callback = int_cb;
2497         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2498             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2499             ret = AVERROR(EINVAL);
2500             goto dump_format;
2501         }
2502         assert_avoptions(output_files[i].opts);
2503         if (strcmp(oc->oformat->name, "rtp")) {
2504             want_sdp = 0;
2505         }
2506     }
2507
2508  dump_format:
2509     /* dump the file output parameters - cannot be done before in case
2510        of stream copy */
2511     for (i = 0; i < nb_output_files; i++) {
2512         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2513     }
2514
2515     /* dump the stream mapping */
2516     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2517     for (i = 0; i < nb_output_streams; i++) {
2518         ost = &output_streams[i];
2519
2520         if (ost->attachment_filename) {
2521             /* an attached file */
2522             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2523                    ost->attachment_filename, ost->file_index, ost->index);
2524             continue;
2525         }
2526         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2527                input_streams[ost->source_index].file_index,
2528                input_streams[ost->source_index].st->index,
2529                ost->file_index,
2530                ost->index);
2531         if (ost->sync_ist != &input_streams[ost->source_index])
2532             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2533                    ost->sync_ist->file_index,
2534                    ost->sync_ist->st->index);
2535         if (ost->stream_copy)
2536             av_log(NULL, AV_LOG_INFO, " (copy)");
2537         else
2538             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2539                    input_streams[ost->source_index].dec->name : "?",
2540                    ost->enc ? ost->enc->name : "?");
2541         av_log(NULL, AV_LOG_INFO, "\n");
2542     }
2543
2544     if (ret) {
2545         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2546         return ret;
2547     }
2548
2549     if (want_sdp) {
2550         print_sdp(output_files, nb_output_files);
2551     }
2552
2553     return 0;
2554 }
2555
2556 /*
2557  * The following code is the main loop of the file converter
2558  */
2559 static int transcode(OutputFile *output_files,
2560                      int nb_output_files,
2561                      InputFile *input_files,
2562                      int nb_input_files)
2563 {
2564     int ret, i;
2565     AVFormatContext *is, *os;
2566     OutputStream *ost;
2567     InputStream *ist;
2568     uint8_t *no_packet;
2569     int no_packet_count=0;
2570     int64_t timer_start;
2571
2572     if (!(no_packet = av_mallocz(nb_input_files)))
2573         exit_program(1);
2574
2575     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2576     if (ret < 0)
2577         goto fail;
2578
2579     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2580     term_init();
2581
2582     timer_start = av_gettime();
2583
2584     for(; received_sigterm == 0;) {
2585         int file_index, ist_index;
2586         AVPacket pkt;
2587         int64_t ipts_min;
2588         double opts_min;
2589
2590         ipts_min = INT64_MAX;
2591         opts_min= 1e100;
2592
2593         /* select the stream that we must read now by looking at the
2594            smallest output pts */
2595         file_index = -1;
2596         for (i = 0; i < nb_output_streams; i++) {
2597             OutputFile *of;
2598             int64_t ipts;
2599             double  opts;
2600             ost = &output_streams[i];
2601             of = &output_files[ost->file_index];
2602             os = output_files[ost->file_index].ctx;
2603             ist = &input_streams[ost->source_index];
2604             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2605                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2606                 continue;
2607             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2608             ipts = ist->pts;
2609             if (!input_files[ist->file_index].eof_reached){
2610                 if(ipts < ipts_min) {
2611                     ipts_min = ipts;
2612                     if(input_sync ) file_index = ist->file_index;
2613                 }
2614                 if(opts < opts_min) {
2615                     opts_min = opts;
2616                     if(!input_sync) file_index = ist->file_index;
2617                 }
2618             }
2619             if (ost->frame_number >= ost->max_frames) {
2620                 int j;
2621                 for (j = 0; j < of->ctx->nb_streams; j++)
2622                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2623                 continue;
2624             }
2625         }
2626         /* if none, if is finished */
2627         if (file_index < 0) {
2628             if(no_packet_count){
2629                 no_packet_count=0;
2630                 memset(no_packet, 0, nb_input_files);
2631                 usleep(10000);
2632                 continue;
2633             }
2634             break;
2635         }
2636
2637         /* read a frame from it and output it in the fifo */
2638         is = input_files[file_index].ctx;
2639         ret= av_read_frame(is, &pkt);
2640         if(ret == AVERROR(EAGAIN)){
2641             no_packet[file_index]=1;
2642             no_packet_count++;
2643             continue;
2644         }
2645         if (ret < 0) {
2646             input_files[file_index].eof_reached = 1;
2647             if (opt_shortest)
2648                 break;
2649             else
2650                 continue;
2651         }
2652
2653         no_packet_count=0;
2654         memset(no_packet, 0, nb_input_files);
2655
2656         if (do_pkt_dump) {
2657             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2658                              is->streams[pkt.stream_index]);
2659         }
2660         /* the following test is needed in case new streams appear
2661            dynamically in stream : we ignore them */
2662         if (pkt.stream_index >= input_files[file_index].nb_streams)
2663             goto discard_packet;
2664         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2665         ist = &input_streams[ist_index];
2666         if (ist->discard)
2667             goto discard_packet;
2668
2669         if (pkt.dts != AV_NOPTS_VALUE)
2670             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2671         if (pkt.pts != AV_NOPTS_VALUE)
2672             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2673
2674         if(pkt.pts != AV_NOPTS_VALUE)
2675             pkt.pts *= ist->ts_scale;
2676         if(pkt.dts != AV_NOPTS_VALUE)
2677             pkt.dts *= ist->ts_scale;
2678
2679 //        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);
2680         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2681             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2682             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2683             int64_t delta= pkt_dts - ist->next_pts;
2684             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2685                 input_files[ist->file_index].ts_offset -= delta;
2686                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2687                        delta, input_files[ist->file_index].ts_offset);
2688                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2689                 if(pkt.pts != AV_NOPTS_VALUE)
2690                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2691             }
2692         }
2693
2694         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2695         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2696
2697             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2698                    ist->file_index, ist->st->index);
2699             if (exit_on_error)
2700                 exit_program(1);
2701             av_free_packet(&pkt);
2702             continue;
2703         }
2704
2705     discard_packet:
2706         av_free_packet(&pkt);
2707
2708         /* dump report by using the output first video and audio streams */
2709         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2710     }
2711
2712     /* at the end of stream, we must flush the decoder buffers */
2713     for (i = 0; i < nb_input_streams; i++) {
2714         ist = &input_streams[i];
2715         if (ist->decoding_needed) {
2716             output_packet(ist, output_streams, nb_output_streams, NULL);
2717         }
2718     }
2719     flush_encoders(output_streams, nb_output_streams);
2720
2721     term_exit();
2722
2723     /* write the trailer if needed and close file */
2724     for(i=0;i<nb_output_files;i++) {
2725         os = output_files[i].ctx;
2726         av_write_trailer(os);
2727     }
2728
2729     /* dump report by using the first video and audio streams */
2730     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2731
2732     /* close each encoder */
2733     for (i = 0; i < nb_output_streams; i++) {
2734         ost = &output_streams[i];
2735         if (ost->encoding_needed) {
2736             av_freep(&ost->st->codec->stats_in);
2737             avcodec_close(ost->st->codec);
2738         }
2739 #if CONFIG_AVFILTER
2740         avfilter_graph_free(&ost->graph);
2741 #endif
2742     }
2743
2744     /* close each decoder */
2745     for (i = 0; i < nb_input_streams; i++) {
2746         ist = &input_streams[i];
2747         if (ist->decoding_needed) {
2748             avcodec_close(ist->st->codec);
2749         }
2750     }
2751
2752     /* finished ! */
2753     ret = 0;
2754
2755  fail:
2756     av_freep(&bit_buffer);
2757     av_freep(&no_packet);
2758
2759     if (output_streams) {
2760         for (i = 0; i < nb_output_streams; i++) {
2761             ost = &output_streams[i];
2762             if (ost) {
2763                 if (ost->stream_copy)
2764                     av_freep(&ost->st->codec->extradata);
2765                 if (ost->logfile) {
2766                     fclose(ost->logfile);
2767                     ost->logfile = NULL;
2768                 }
2769                 av_fifo_free(ost->fifo); /* works even if fifo is not
2770                                              initialized but set to zero */
2771                 av_freep(&ost->st->codec->subtitle_header);
2772                 av_free(ost->pict_tmp.data[0]);
2773                 av_free(ost->forced_kf_pts);
2774                 if (ost->video_resample)
2775                     sws_freeContext(ost->img_resample_ctx);
2776                 if (ost->resample)
2777                     audio_resample_close(ost->resample);
2778                 if (ost->reformat_ctx)
2779                     av_audio_convert_free(ost->reformat_ctx);
2780                 av_dict_free(&ost->opts);
2781             }
2782         }
2783     }
2784     return ret;
2785 }
2786
2787 static double parse_frame_aspect_ratio(const char *arg)
2788 {
2789     int x = 0, y = 0;
2790     double ar = 0;
2791     const char *p;
2792     char *end;
2793
2794     p = strchr(arg, ':');
2795     if (p) {
2796         x = strtol(arg, &end, 10);
2797         if (end == p)
2798             y = strtol(end+1, &end, 10);
2799         if (x > 0 && y > 0)
2800             ar = (double)x / (double)y;
2801     } else
2802         ar = strtod(arg, NULL);
2803
2804     if (!ar) {
2805         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2806         exit_program(1);
2807     }
2808     return ar;
2809 }
2810
2811 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2812 {
2813     return parse_option(o, "codec:a", arg, options);
2814 }
2815
2816 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2817 {
2818     return parse_option(o, "codec:v", arg, options);
2819 }
2820
2821 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2822 {
2823     return parse_option(o, "codec:s", arg, options);
2824 }
2825
2826 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2827 {
2828     return parse_option(o, "codec:d", arg, options);
2829 }
2830
2831 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2832 {
2833     StreamMap *m = NULL;
2834     int i, negative = 0, file_idx;
2835     int sync_file_idx = -1, sync_stream_idx;
2836     char *p, *sync;
2837     char *map;
2838
2839     if (*arg == '-') {
2840         negative = 1;
2841         arg++;
2842     }
2843     map = av_strdup(arg);
2844
2845     /* parse sync stream first, just pick first matching stream */
2846     if (sync = strchr(map, ',')) {
2847         *sync = 0;
2848         sync_file_idx = strtol(sync + 1, &sync, 0);
2849         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2850             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2851             exit_program(1);
2852         }
2853         if (*sync)
2854             sync++;
2855         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2856             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2857                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2858                 sync_stream_idx = i;
2859                 break;
2860             }
2861         if (i == input_files[sync_file_idx].nb_streams) {
2862             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2863                                        "match any streams.\n", arg);
2864             exit_program(1);
2865         }
2866     }
2867
2868
2869     file_idx = strtol(map, &p, 0);
2870     if (file_idx >= nb_input_files || file_idx < 0) {
2871         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2872         exit_program(1);
2873     }
2874     if (negative)
2875         /* disable some already defined maps */
2876         for (i = 0; i < o->nb_stream_maps; i++) {
2877             m = &o->stream_maps[i];
2878             if (file_idx == m->file_index &&
2879                 check_stream_specifier(input_files[m->file_index].ctx,
2880                                        input_files[m->file_index].ctx->streams[m->stream_index],
2881                                        *p == ':' ? p + 1 : p) > 0)
2882                 m->disabled = 1;
2883         }
2884     else
2885         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2886             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2887                         *p == ':' ? p + 1 : p) <= 0)
2888                 continue;
2889             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2890                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2891             m = &o->stream_maps[o->nb_stream_maps - 1];
2892
2893             m->file_index   = file_idx;
2894             m->stream_index = i;
2895
2896             if (sync_file_idx >= 0) {
2897                 m->sync_file_index   = sync_file_idx;
2898                 m->sync_stream_index = sync_stream_idx;
2899             } else {
2900                 m->sync_file_index   = file_idx;
2901                 m->sync_stream_index = i;
2902             }
2903         }
2904
2905     if (!m) {
2906         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2907         exit_program(1);
2908     }
2909
2910     av_freep(&map);
2911     return 0;
2912 }
2913
2914 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2915 {
2916     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2917                                 &o->nb_attachments, o->nb_attachments + 1);
2918     o->attachments[o->nb_attachments - 1] = arg;
2919     return 0;
2920 }
2921
2922 /**
2923  * Parse a metadata specifier in arg.
2924  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2925  * @param index for type c/p, chapter/program index is written here
2926  * @param stream_spec for type s, the stream specifier is written here
2927  */
2928 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2929 {
2930     if (*arg) {
2931         *type = *arg;
2932         switch (*arg) {
2933         case 'g':
2934             break;
2935         case 's':
2936             if (*(++arg) && *arg != ':') {
2937                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2938                 exit_program(1);
2939             }
2940             *stream_spec = *arg == ':' ? arg + 1 : "";
2941             break;
2942         case 'c':
2943         case 'p':
2944             if (*(++arg) == ':')
2945                 *index = strtol(++arg, NULL, 0);
2946             break;
2947         default:
2948             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2949             exit_program(1);
2950         }
2951     } else
2952         *type = 'g';
2953 }
2954
2955 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2956 {
2957     AVDictionary **meta_in = NULL;
2958     AVDictionary **meta_out;
2959     int i, ret = 0;
2960     char type_in, type_out;
2961     const char *istream_spec = NULL, *ostream_spec = NULL;
2962     int idx_in = 0, idx_out = 0;
2963
2964     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
2965     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2966
2967     if (type_in == 'g' || type_out == 'g')
2968         o->metadata_global_manual = 1;
2969     if (type_in == 's' || type_out == 's')
2970         o->metadata_streams_manual = 1;
2971     if (type_in == 'c' || type_out == 'c')
2972         o->metadata_chapters_manual = 1;
2973
2974 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2975     if ((index) < 0 || (index) >= (nb_elems)) {\
2976         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
2977                 (desc), (index));\
2978         exit_program(1);\
2979     }
2980
2981 #define SET_DICT(type, meta, context, index)\
2982         switch (type) {\
2983         case 'g':\
2984             meta = &context->metadata;\
2985             break;\
2986         case 'c':\
2987             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
2988             meta = &context->chapters[index]->metadata;\
2989             break;\
2990         case 'p':\
2991             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
2992             meta = &context->programs[index]->metadata;\
2993             break;\
2994         }\
2995
2996     SET_DICT(type_in, meta_in, ic, idx_in);
2997     SET_DICT(type_out, meta_out, oc, idx_out);
2998
2999     /* for input streams choose first matching stream */
3000     if (type_in == 's') {
3001         for (i = 0; i < ic->nb_streams; i++) {
3002             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
3003                 meta_in = &ic->streams[i]->metadata;
3004                 break;
3005             } else if (ret < 0)
3006                 exit_program(1);
3007         }
3008         if (!meta_in) {
3009             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
3010             exit_program(1);
3011         }
3012     }
3013
3014     if (type_out == 's') {
3015         for (i = 0; i < oc->nb_streams; i++) {
3016             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
3017                 meta_out = &oc->streams[i]->metadata;
3018                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3019             } else if (ret < 0)
3020                 exit_program(1);
3021         }
3022     } else
3023         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3024
3025     return 0;
3026 }
3027
3028 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3029 {
3030     const char *codec_string = encoder ? "encoder" : "decoder";
3031     AVCodec *codec;
3032
3033     codec = encoder ?
3034         avcodec_find_encoder_by_name(name) :
3035         avcodec_find_decoder_by_name(name);
3036     if(!codec) {
3037         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3038         exit_program(1);
3039     }
3040     if(codec->type != type) {
3041         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3042         exit_program(1);
3043     }
3044     return codec;
3045 }
3046
3047 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3048 {
3049     char *codec_name = NULL;
3050
3051     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3052     if (codec_name) {
3053         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3054         st->codec->codec_id = codec->id;
3055         return codec;
3056     } else
3057         return avcodec_find_decoder(st->codec->codec_id);
3058 }
3059
3060 /**
3061  * Add all the streams from the given input file to the global
3062  * list of input streams.
3063  */
3064 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3065 {
3066     int i, rfps, rfps_base;
3067
3068     for (i = 0; i < ic->nb_streams; i++) {
3069         AVStream *st = ic->streams[i];
3070         AVCodecContext *dec = st->codec;
3071         InputStream *ist;
3072
3073         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3074         ist = &input_streams[nb_input_streams - 1];
3075         ist->st = st;
3076         ist->file_index = nb_input_files;
3077         ist->discard = 1;
3078         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3079
3080         ist->ts_scale = 1.0;
3081         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3082
3083         ist->dec = choose_decoder(o, ic, st);
3084
3085         switch (dec->codec_type) {
3086         case AVMEDIA_TYPE_AUDIO:
3087             if (o->audio_disable)
3088                 st->discard= AVDISCARD_ALL;
3089             break;
3090         case AVMEDIA_TYPE_VIDEO:
3091             rfps      = ic->streams[i]->r_frame_rate.num;
3092             rfps_base = ic->streams[i]->r_frame_rate.den;
3093             if (dec->lowres) {
3094                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3095                 dec->height >>= dec->lowres;
3096                 dec->width  >>= dec->lowres;
3097             }
3098
3099             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3100
3101                 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",
3102                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3103                        (float)rfps / rfps_base, rfps, rfps_base);
3104             }
3105
3106             if (o->video_disable)
3107                 st->discard= AVDISCARD_ALL;
3108             else if(video_discard)
3109                 st->discard= video_discard;
3110             break;
3111         case AVMEDIA_TYPE_DATA:
3112             break;
3113         case AVMEDIA_TYPE_SUBTITLE:
3114             if (o->subtitle_disable)
3115                 st->discard = AVDISCARD_ALL;
3116             break;
3117         case AVMEDIA_TYPE_ATTACHMENT:
3118         case AVMEDIA_TYPE_UNKNOWN:
3119             break;
3120         default:
3121             abort();
3122         }
3123     }
3124 }
3125
3126 static void assert_file_overwrite(const char *filename)
3127 {
3128     if (!file_overwrite &&
3129         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3130          av_strstart(filename, "file:", NULL))) {
3131         if (avio_check(filename, 0) == 0) {
3132             if (!using_stdin) {
3133                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3134                 fflush(stderr);
3135                 if (!read_yesno()) {
3136                     fprintf(stderr, "Not overwriting - exiting\n");
3137                     exit_program(1);
3138                 }
3139             }
3140             else {
3141                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3142                 exit_program(1);
3143             }
3144         }
3145     }
3146 }
3147
3148 static void dump_attachment(AVStream *st, const char *filename)
3149 {
3150     int ret;
3151     AVIOContext *out = NULL;
3152     AVDictionaryEntry *e;
3153
3154     if (!st->codec->extradata_size) {
3155         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3156                nb_input_files - 1, st->index);
3157         return;
3158     }
3159     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3160         filename = e->value;
3161     if (!*filename) {
3162         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3163                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3164         exit_program(1);
3165     }
3166
3167     assert_file_overwrite(filename);
3168
3169     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3170         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3171                filename);
3172         exit_program(1);
3173     }
3174
3175     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3176     avio_flush(out);
3177     avio_close(out);
3178 }
3179
3180 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3181 {
3182     AVFormatContext *ic;
3183     AVInputFormat *file_iformat = NULL;
3184     int err, i, ret;
3185     int64_t timestamp;
3186     uint8_t buf[128];
3187     AVDictionary **opts;
3188     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3189
3190     if (o->format) {
3191         if (!(file_iformat = av_find_input_format(o->format))) {
3192             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3193             exit_program(1);
3194         }
3195     }
3196
3197     if (!strcmp(filename, "-"))
3198         filename = "pipe:";
3199
3200     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3201                     !strcmp(filename, "/dev/stdin");
3202
3203     /* get default parameters from command line */
3204     ic = avformat_alloc_context();
3205     if (!ic) {
3206         print_error(filename, AVERROR(ENOMEM));
3207         exit_program(1);
3208     }
3209     if (o->nb_audio_sample_rate) {
3210         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3211         av_dict_set(&format_opts, "sample_rate", buf, 0);
3212     }
3213     if (o->nb_audio_channels) {
3214         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3215         av_dict_set(&format_opts, "channels", buf, 0);
3216     }
3217     if (o->nb_frame_rates) {
3218         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3219     }
3220     if (o->nb_frame_sizes) {
3221         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3222     }
3223     if (o->nb_frame_pix_fmts)
3224         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3225
3226     ic->flags |= AVFMT_FLAG_NONBLOCK;
3227     ic->interrupt_callback = int_cb;
3228
3229     /* open the input file with generic libav function */
3230     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3231     if (err < 0) {
3232         print_error(filename, err);
3233         exit_program(1);
3234     }
3235     assert_avoptions(format_opts);
3236
3237     /* apply forced codec ids */
3238     for (i = 0; i < ic->nb_streams; i++)
3239         choose_decoder(o, ic, ic->streams[i]);
3240
3241     /* Set AVCodecContext options for avformat_find_stream_info */
3242     opts = setup_find_stream_info_opts(ic, codec_opts);
3243     orig_nb_streams = ic->nb_streams;
3244
3245     /* If not enough info to get the stream parameters, we decode the
3246        first frames to get it. (used in mpeg case for example) */
3247     ret = avformat_find_stream_info(ic, opts);
3248     if (ret < 0) {
3249         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3250         avformat_close_input(&ic);
3251         exit_program(1);
3252     }
3253
3254     timestamp = o->start_time;
3255     /* add the stream start time */
3256     if (ic->start_time != AV_NOPTS_VALUE)
3257         timestamp += ic->start_time;
3258
3259     /* if seeking requested, we execute it */
3260     if (o->start_time != 0) {
3261         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3262         if (ret < 0) {
3263             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3264                    filename, (double)timestamp / AV_TIME_BASE);
3265         }
3266     }
3267
3268     /* update the current parameters so that they match the one of the input stream */
3269     add_input_streams(o, ic);
3270
3271     /* dump the file content */
3272     av_dump_format(ic, nb_input_files, filename, 0);
3273
3274     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3275     input_files[nb_input_files - 1].ctx        = ic;
3276     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3277     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3278     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3279     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3280
3281     for (i = 0; i < o->nb_dump_attachment; i++) {
3282         int j;
3283
3284         for (j = 0; j < ic->nb_streams; j++) {
3285             AVStream *st = ic->streams[j];
3286
3287             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3288                 dump_attachment(st, o->dump_attachment[i].u.str);
3289         }
3290     }
3291
3292     for (i = 0; i < orig_nb_streams; i++)
3293         av_dict_free(&opts[i]);
3294     av_freep(&opts);
3295
3296     reset_options(o);
3297     return 0;
3298 }
3299
3300 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3301                                     AVCodecContext *avctx)
3302 {
3303     char *p;
3304     int n = 1, i;
3305     int64_t t;
3306
3307     for (p = kf; *p; p++)
3308         if (*p == ',')
3309             n++;
3310     ost->forced_kf_count = n;
3311     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3312     if (!ost->forced_kf_pts) {
3313         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3314         exit_program(1);
3315     }
3316     for (i = 0; i < n; i++) {
3317         p = i ? strchr(p, ',') + 1 : kf;
3318         t = parse_time_or_die("force_key_frames", p, 1);
3319         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3320     }
3321 }
3322
3323 static uint8_t *get_line(AVIOContext *s)
3324 {
3325     AVIOContext *line;
3326     uint8_t *buf;
3327     char c;
3328
3329     if (avio_open_dyn_buf(&line) < 0) {
3330         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3331         exit_program(1);
3332     }
3333
3334     while ((c = avio_r8(s)) && c != '\n')
3335         avio_w8(line, c);
3336     avio_w8(line, 0);
3337     avio_close_dyn_buf(line, &buf);
3338
3339     return buf;
3340 }
3341
3342 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3343 {
3344     int i, ret = 1;
3345     char filename[1000];
3346     const char *base[3] = { getenv("AVCONV_DATADIR"),
3347                             getenv("HOME"),
3348                             AVCONV_DATADIR,
3349                             };
3350
3351     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3352         if (!base[i])
3353             continue;
3354         if (codec_name) {
3355             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3356                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3357             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3358         }
3359         if (ret) {
3360             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3361                      i != 1 ? "" : "/.avconv", preset_name);
3362             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3363         }
3364     }
3365     return ret;
3366 }
3367
3368 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3369 {
3370     char *codec_name = NULL;
3371
3372     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3373     if (!codec_name) {
3374         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3375                                                   NULL, ost->st->codec->codec_type);
3376         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3377     } else if (!strcmp(codec_name, "copy"))
3378         ost->stream_copy = 1;
3379     else {
3380         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3381         ost->st->codec->codec_id = ost->enc->id;
3382     }
3383 }
3384
3385 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3386 {
3387     OutputStream *ost;
3388     AVStream *st = avformat_new_stream(oc, NULL);
3389     int idx      = oc->nb_streams - 1, ret = 0;
3390     char *bsf = NULL, *next, *codec_tag = NULL;
3391     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3392     double qscale = -1;
3393     char *buf = NULL, *arg = NULL, *preset = NULL;
3394     AVIOContext *s = NULL;
3395
3396     if (!st) {
3397         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3398         exit_program(1);
3399     }
3400
3401     if (oc->nb_streams - 1 < o->nb_streamid_map)
3402         st->id = o->streamid_map[oc->nb_streams - 1];
3403
3404     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3405                                 nb_output_streams + 1);
3406     ost = &output_streams[nb_output_streams - 1];
3407     ost->file_index = nb_output_files;
3408     ost->index = idx;
3409     ost->st    = st;
3410     st->codec->codec_type = type;
3411     choose_encoder(o, oc, ost);
3412     if (ost->enc) {
3413         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3414     }
3415
3416     avcodec_get_context_defaults3(st->codec, ost->enc);
3417     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3418
3419     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3420     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3421         do  {
3422             buf = get_line(s);
3423             if (!buf[0] || buf[0] == '#') {
3424                 av_free(buf);
3425                 continue;
3426             }
3427             if (!(arg = strchr(buf, '='))) {
3428                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3429                 exit_program(1);
3430             }
3431             *arg++ = 0;
3432             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3433             av_free(buf);
3434         } while (!s->eof_reached);
3435         avio_close(s);
3436     }
3437     if (ret) {
3438         av_log(NULL, AV_LOG_FATAL,
3439                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3440                preset, ost->file_index, ost->index);
3441         exit_program(1);
3442     }
3443
3444     ost->max_frames = INT64_MAX;
3445     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3446
3447     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3448     while (bsf) {
3449         if (next = strchr(bsf, ','))
3450             *next++ = 0;
3451         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3452             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3453             exit_program(1);
3454         }
3455         if (bsfc_prev)
3456             bsfc_prev->next = bsfc;
3457         else
3458             ost->bitstream_filters = bsfc;
3459
3460         bsfc_prev = bsfc;
3461         bsf       = next;
3462     }
3463
3464     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3465     if (codec_tag) {
3466         uint32_t tag = strtol(codec_tag, &next, 0);
3467         if (*next)
3468             tag = AV_RL32(codec_tag);
3469         st->codec->codec_tag = tag;
3470     }
3471
3472     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3473     if (qscale >= 0 || same_quant) {
3474         st->codec->flags |= CODEC_FLAG_QSCALE;
3475         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3476     }
3477
3478     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3479         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3480
3481     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3482     return ost;
3483 }
3484
3485 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3486 {
3487     int i;
3488     const char *p = str;
3489     for(i = 0;; i++) {
3490         dest[i] = atoi(p);
3491         if(i == 63)
3492             break;
3493         p = strchr(p, ',');
3494         if(!p) {
3495             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3496             exit_program(1);
3497         }
3498         p++;
3499     }
3500 }
3501
3502 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3503 {
3504     AVStream *st;
3505     OutputStream *ost;
3506     AVCodecContext *video_enc;
3507
3508     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3509     st  = ost->st;
3510     video_enc = st->codec;
3511
3512     if (!ost->stream_copy) {
3513         const char *p = NULL;
3514         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3515         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3516         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3517         int i;
3518
3519         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3520         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3521             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3522             exit_program(1);
3523         }
3524
3525         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3526         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3527             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3528             exit_program(1);
3529         }
3530
3531         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3532         if (frame_aspect_ratio)
3533             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3534
3535         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3536         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3537             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3538             exit_program(1);
3539         }
3540         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3541
3542         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3543         if (intra_matrix) {
3544             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3545                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3546                 exit_program(1);
3547             }
3548             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3549         }
3550         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3551         if (inter_matrix) {
3552             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3553                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3554                 exit_program(1);
3555             }
3556             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3557         }
3558
3559         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3560         for(i=0; p; i++){
3561             int start, end, q;
3562             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3563             if(e!=3){
3564                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3565                 exit_program(1);
3566             }
3567             video_enc->rc_override=
3568                 av_realloc(video_enc->rc_override,
3569                            sizeof(RcOverride)*(i+1));
3570             video_enc->rc_override[i].start_frame= start;
3571             video_enc->rc_override[i].end_frame  = end;
3572             if(q>0){
3573                 video_enc->rc_override[i].qscale= q;
3574                 video_enc->rc_override[i].quality_factor= 1.0;
3575             }
3576             else{
3577                 video_enc->rc_override[i].qscale= 0;
3578                 video_enc->rc_override[i].quality_factor= -q/100.0;
3579             }
3580             p= strchr(p, '/');
3581             if(p) p++;
3582         }
3583         video_enc->rc_override_count=i;
3584         if (!video_enc->rc_initial_buffer_occupancy)
3585             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3586         video_enc->intra_dc_precision= intra_dc_precision - 8;
3587
3588         /* two pass mode */
3589         if (do_pass) {
3590             if (do_pass == 1) {
3591                 video_enc->flags |= CODEC_FLAG_PASS1;
3592             } else {
3593                 video_enc->flags |= CODEC_FLAG_PASS2;
3594             }
3595         }
3596
3597         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3598         if (forced_key_frames)
3599             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3600
3601         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3602
3603         ost->top_field_first = -1;
3604         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3605
3606         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3607
3608 #if CONFIG_AVFILTER
3609         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3610         if (filters)
3611             ost->avfilter = av_strdup(filters);
3612 #endif
3613     }
3614
3615     return ost;
3616 }
3617
3618 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3619 {
3620     AVStream *st;
3621     OutputStream *ost;
3622     AVCodecContext *audio_enc;
3623
3624     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3625     st  = ost->st;
3626
3627     audio_enc = st->codec;
3628     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3629
3630     if (!ost->stream_copy) {
3631         char *sample_fmt = NULL;
3632
3633         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3634
3635         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3636         if (sample_fmt &&
3637             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3638             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3639             exit_program(1);
3640         }
3641
3642         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3643     }
3644
3645     return ost;
3646 }
3647
3648 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3649 {
3650     OutputStream *ost;
3651
3652     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3653     if (!ost->stream_copy) {
3654         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3655         exit_program(1);
3656     }
3657
3658     return ost;
3659 }
3660
3661 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3662 {
3663     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3664     ost->stream_copy = 1;
3665     return ost;
3666 }
3667
3668 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3669 {
3670     AVStream *st;
3671     OutputStream *ost;
3672     AVCodecContext *subtitle_enc;
3673
3674     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3675     st  = ost->st;
3676     subtitle_enc = st->codec;
3677
3678     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3679
3680     return ost;
3681 }
3682
3683 /* arg format is "output-stream-index:streamid-value". */
3684 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3685 {
3686     int idx;
3687     char *p;
3688     char idx_str[16];
3689
3690     av_strlcpy(idx_str, arg, sizeof(idx_str));
3691     p = strchr(idx_str, ':');
3692     if (!p) {
3693         av_log(NULL, AV_LOG_FATAL,
3694                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3695                arg, opt);
3696         exit_program(1);
3697     }
3698     *p++ = '\0';
3699     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3700     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3701     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3702     return 0;
3703 }
3704
3705 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3706 {
3707     AVFormatContext *is = ifile->ctx;
3708     AVFormatContext *os = ofile->ctx;
3709     int i;
3710
3711     for (i = 0; i < is->nb_chapters; i++) {
3712         AVChapter *in_ch = is->chapters[i], *out_ch;
3713       &nb