avconv: implement get_buffer()/release_buffer().
[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/vsrc_buffer.h"
54 #endif
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/types.h>
58 #include <sys/time.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #include <time.h>
73
74 #include "cmdutils.h"
75
76 #include "libavutil/avassert.h"
77
78 const char program_name[] = "avconv";
79 const int program_birth_year = 2000;
80
81 /* select an input stream for an output stream */
82 typedef struct StreamMap {
83     int disabled;           /** 1 is this mapping is disabled by a negative map */
84     int file_index;
85     int stream_index;
86     int sync_file_index;
87     int sync_stream_index;
88 } StreamMap;
89
90 /**
91  * select an input file for an output file
92  */
93 typedef struct MetadataMap {
94     int  file;      ///< file index
95     char type;      ///< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
96     int  index;     ///< stream/chapter/program number
97 } MetadataMap;
98
99 static const OptionDef options[];
100
101 static int video_discard = 0;
102 static int same_quant = 0;
103 static int do_deinterlace = 0;
104 static int intra_dc_precision = 8;
105 static int qp_hist = 0;
106
107 static int file_overwrite = 0;
108 static int do_benchmark = 0;
109 static int do_hex_dump = 0;
110 static int do_pkt_dump = 0;
111 static int do_pass = 0;
112 static char *pass_logfilename_prefix = NULL;
113 static int video_sync_method= -1;
114 static int audio_sync_method= 0;
115 static float audio_drift_threshold= 0.1;
116 static int copy_ts= 0;
117 static int copy_tb = 1;
118 static int opt_shortest = 0;
119 static char *vstats_filename;
120 static FILE *vstats_file;
121
122 static int audio_volume = 256;
123
124 static int exit_on_error = 0;
125 static int using_stdin = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t extra_size = 0;
129 static int nb_frames_dup = 0;
130 static int nb_frames_drop = 0;
131 static int input_sync;
132
133 static float dts_delta_threshold = 10;
134
135 static int print_stats = 1;
136
137 static uint8_t *audio_buf;
138 static uint8_t *audio_out;
139 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
140
141 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
142
143 typedef struct FrameBuffer {
144     uint8_t *base[4];
145     uint8_t *data[4];
146     int  linesize[4];
147
148     int h, w;
149     enum PixelFormat pix_fmt;
150
151     int refcount;
152     struct InputStream *ist;
153     struct FrameBuffer *next;
154 } FrameBuffer;
155
156 typedef struct InputStream {
157     int file_index;
158     AVStream *st;
159     int discard;             /* true if stream data should be discarded */
160     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
161     AVCodec *dec;
162     AVFrame *decoded_frame;
163     AVFrame *filtered_frame;
164
165     int64_t       start;     /* time when read started */
166     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
167                                 is not defined */
168     int64_t       pts;       /* current pts */
169     PtsCorrectionContext pts_ctx;
170     double ts_scale;
171     int is_start;            /* is 1 at the start and after a discontinuity */
172     int showed_multi_packet_warning;
173     AVDictionary *opts;
174
175     /* a pool of free buffers for decoded data */
176     FrameBuffer *buffer_pool;
177 } InputStream;
178
179 typedef struct InputFile {
180     AVFormatContext *ctx;
181     int eof_reached;      /* true if eof reached */
182     int ist_index;        /* index of first stream in ist_table */
183     int buffer_size;      /* current total buffer size */
184     int64_t ts_offset;
185     int nb_streams;       /* number of stream that avconv is aware of; may be different
186                              from ctx.nb_streams if new streams appear during av_read_frame() */
187     int rate_emu;
188 } InputFile;
189
190 typedef struct OutputStream {
191     int file_index;          /* file index */
192     int index;               /* stream index in the output file */
193     int source_index;        /* InputStream index */
194     AVStream *st;            /* stream in the output file */
195     int encoding_needed;     /* true if encoding needed for this stream */
196     int frame_number;
197     /* input pts and corresponding output pts
198        for A/V sync */
199     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
200     struct InputStream *sync_ist; /* input stream to sync against */
201     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
202     AVBitStreamFilterContext *bitstream_filters;
203     AVCodec *enc;
204     int64_t max_frames;
205
206     /* video only */
207     int video_resample;
208     AVFrame pict_tmp;      /* temporary image for resampling */
209     struct SwsContext *img_resample_ctx; /* for image resampling */
210     int resample_height;
211     int resample_width;
212     int resample_pix_fmt;
213     AVRational frame_rate;
214     int force_fps;
215     int top_field_first;
216
217     float frame_aspect_ratio;
218
219     /* forced key frames */
220     int64_t *forced_kf_pts;
221     int forced_kf_count;
222     int forced_kf_index;
223
224     /* audio only */
225     int audio_resample;
226     ReSampleContext *resample; /* for audio resampling */
227     int resample_sample_fmt;
228     int resample_channels;
229     int resample_sample_rate;
230     int reformat_pair;
231     AVAudioConvert *reformat_ctx;
232     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
233     FILE *logfile;
234
235 #if CONFIG_AVFILTER
236     AVFilterContext *output_video_filter;
237     AVFilterContext *input_video_filter;
238     AVFilterBufferRef *picref;
239     char *avfilter;
240     AVFilterGraph *graph;
241 #endif
242
243     int64_t sws_flags;
244     AVDictionary *opts;
245     int is_past_recording_time;
246     int stream_copy;
247     const char *attachment_filename;
248     int copy_initial_nonkeyframes;
249 } OutputStream;
250
251
252 typedef struct OutputFile {
253     AVFormatContext *ctx;
254     AVDictionary *opts;
255     int ost_index;       /* index of the first stream in output_streams */
256     int64_t recording_time; /* desired length of the resulting file in microseconds */
257     int64_t start_time;     /* start time in microseconds */
258     uint64_t limit_filesize;
259 } OutputFile;
260
261 static InputStream *input_streams = NULL;
262 static int         nb_input_streams = 0;
263 static InputFile   *input_files   = NULL;
264 static int         nb_input_files   = 0;
265
266 static OutputStream *output_streams = NULL;
267 static int        nb_output_streams = 0;
268 static OutputFile   *output_files   = NULL;
269 static int        nb_output_files   = 0;
270
271 typedef struct OptionsContext {
272     /* input/output options */
273     int64_t start_time;
274     const char *format;
275
276     SpecifierOpt *codec_names;
277     int        nb_codec_names;
278     SpecifierOpt *audio_channels;
279     int        nb_audio_channels;
280     SpecifierOpt *audio_sample_rate;
281     int        nb_audio_sample_rate;
282     SpecifierOpt *frame_rates;
283     int        nb_frame_rates;
284     SpecifierOpt *frame_sizes;
285     int        nb_frame_sizes;
286     SpecifierOpt *frame_pix_fmts;
287     int        nb_frame_pix_fmts;
288
289     /* input options */
290     int64_t input_ts_offset;
291     int rate_emu;
292
293     SpecifierOpt *ts_scale;
294     int        nb_ts_scale;
295     SpecifierOpt *dump_attachment;
296     int        nb_dump_attachment;
297
298     /* output options */
299     StreamMap *stream_maps;
300     int     nb_stream_maps;
301     /* first item specifies output metadata, second is input */
302     MetadataMap (*meta_data_maps)[2];
303     int nb_meta_data_maps;
304     int metadata_global_manual;
305     int metadata_streams_manual;
306     int metadata_chapters_manual;
307     const char **attachments;
308     int       nb_attachments;
309
310     int chapters_input_file;
311
312     int64_t recording_time;
313     uint64_t limit_filesize;
314     float mux_preload;
315     float mux_max_delay;
316
317     int video_disable;
318     int audio_disable;
319     int subtitle_disable;
320     int data_disable;
321
322     /* indexed by output file stream index */
323     int   *streamid_map;
324     int nb_streamid_map;
325
326     SpecifierOpt *metadata;
327     int        nb_metadata;
328     SpecifierOpt *max_frames;
329     int        nb_max_frames;
330     SpecifierOpt *bitstream_filters;
331     int        nb_bitstream_filters;
332     SpecifierOpt *codec_tags;
333     int        nb_codec_tags;
334     SpecifierOpt *sample_fmts;
335     int        nb_sample_fmts;
336     SpecifierOpt *qscale;
337     int        nb_qscale;
338     SpecifierOpt *forced_key_frames;
339     int        nb_forced_key_frames;
340     SpecifierOpt *force_fps;
341     int        nb_force_fps;
342     SpecifierOpt *frame_aspect_ratios;
343     int        nb_frame_aspect_ratios;
344     SpecifierOpt *rc_overrides;
345     int        nb_rc_overrides;
346     SpecifierOpt *intra_matrices;
347     int        nb_intra_matrices;
348     SpecifierOpt *inter_matrices;
349     int        nb_inter_matrices;
350     SpecifierOpt *top_field_first;
351     int        nb_top_field_first;
352     SpecifierOpt *metadata_map;
353     int        nb_metadata_map;
354     SpecifierOpt *presets;
355     int        nb_presets;
356     SpecifierOpt *copy_initial_nonkeyframes;
357     int        nb_copy_initial_nonkeyframes;
358 #if CONFIG_AVFILTER
359     SpecifierOpt *filters;
360     int        nb_filters;
361 #endif
362 } OptionsContext;
363
364 #define MATCH_PER_STREAM_OPT(name, type, outvar, fmtctx, st)\
365 {\
366     int i, ret;\
367     for (i = 0; i < o->nb_ ## name; i++) {\
368         char *spec = o->name[i].specifier;\
369         if ((ret = check_stream_specifier(fmtctx, st, spec)) > 0)\
370             outvar = o->name[i].u.type;\
371         else if (ret < 0)\
372             exit_program(1);\
373     }\
374 }
375
376 static void reset_options(OptionsContext *o)
377 {
378     const OptionDef *po = options;
379
380     /* all OPT_SPEC and OPT_STRING can be freed in generic way */
381     while (po->name) {
382         void *dst = (uint8_t*)o + po->u.off;
383
384         if (po->flags & OPT_SPEC) {
385             SpecifierOpt **so = dst;
386             int i, *count = (int*)(so + 1);
387             for (i = 0; i < *count; i++) {
388                 av_freep(&(*so)[i].specifier);
389                 if (po->flags & OPT_STRING)
390                     av_freep(&(*so)[i].u.str);
391             }
392             av_freep(so);
393             *count = 0;
394         } else if (po->flags & OPT_OFFSET && po->flags & OPT_STRING)
395             av_freep(dst);
396         po++;
397     }
398
399     av_freep(&o->stream_maps);
400     av_freep(&o->meta_data_maps);
401     av_freep(&o->streamid_map);
402
403     memset(o, 0, sizeof(*o));
404
405     o->mux_max_delay  = 0.7;
406     o->recording_time = INT64_MAX;
407     o->limit_filesize = UINT64_MAX;
408     o->chapters_input_file = INT_MAX;
409
410     uninit_opts();
411     init_opts();
412 }
413
414 static int alloc_buffer(InputStream *ist, FrameBuffer **pbuf)
415 {
416     AVCodecContext *s = ist->st->codec;
417     FrameBuffer  *buf = av_mallocz(sizeof(*buf));
418     int ret;
419     const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
420     int h_chroma_shift, v_chroma_shift;
421     int edge = 32; // XXX should be avcodec_get_edge_width(), but that fails on svq1
422     int w = s->width, h = s->height;
423
424     if (!buf)
425         return AVERROR(ENOMEM);
426
427     if (!(s->flags & CODEC_FLAG_EMU_EDGE)) {
428         w += 2*edge;
429         h += 2*edge;
430     }
431
432     avcodec_align_dimensions(s, &w, &h);
433     if ((ret = av_image_alloc(buf->base, buf->linesize, w, h,
434                               s->pix_fmt, 32)) < 0) {
435         av_freep(&buf);
436         return ret;
437     }
438     /* XXX this shouldn't be needed, but some tests break without this line
439      * those decoders are buggy and need to be fixed.
440      * the following tests fail:
441      * bethsoft-vid, cdgraphics, ansi, aasc, fraps-v1, qtrle-1bit
442      */
443     memset(buf->base[0], 128, ret);
444
445     avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
446     for (int i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
447         const int h_shift = i==0 ? 0 : h_chroma_shift;
448         const int v_shift = i==0 ? 0 : v_chroma_shift;
449         if (s->flags & CODEC_FLAG_EMU_EDGE)
450             buf->data[i] = buf->base[i];
451         else
452             buf->data[i] = buf->base[i] +
453                            FFALIGN((buf->linesize[i]*edge >> v_shift) +
454                                    (pixel_size*edge >> h_shift), 32);
455     }
456     buf->w       = s->width;
457     buf->h       = s->height;
458     buf->pix_fmt = s->pix_fmt;
459     buf->ist     = ist;
460
461     *pbuf = buf;
462     return 0;
463 }
464
465 static void free_buffer_pool(InputStream *ist)
466 {
467     FrameBuffer *buf = ist->buffer_pool;
468     while (buf) {
469         ist->buffer_pool = buf->next;
470         av_freep(&buf->base[0]);
471         av_free(buf);
472         buf = ist->buffer_pool;
473     }
474 }
475
476 static void unref_buffer(InputStream *ist, FrameBuffer *buf)
477 {
478     av_assert0(buf->refcount);
479     buf->refcount--;
480     if (!buf->refcount) {
481         buf->next = ist->buffer_pool;
482         ist->buffer_pool = buf;
483     }
484 }
485
486 static int codec_get_buffer(AVCodecContext *s, AVFrame *frame)
487 {
488     InputStream *ist = s->opaque;
489     FrameBuffer *buf;
490     int ret, i;
491
492     if (!ist->buffer_pool && (ret = alloc_buffer(ist, &ist->buffer_pool)) < 0)
493         return ret;
494
495     buf              = ist->buffer_pool;
496     ist->buffer_pool = buf->next;
497     buf->next        = NULL;
498     if (buf->w != s->width || buf->h != s->height || buf->pix_fmt != s->pix_fmt) {
499         av_freep(&buf->base[0]);
500         av_free(buf);
501         if ((ret = alloc_buffer(ist, &buf)) < 0)
502             return ret;
503     }
504     buf->refcount++;
505
506     frame->opaque        = buf;
507     frame->type          = FF_BUFFER_TYPE_USER;
508     frame->extended_data = frame->data;
509     frame->pkt_pts       = s->pkt ? s->pkt->pts : AV_NOPTS_VALUE;
510
511     for (i = 0; i < FF_ARRAY_ELEMS(buf->data); i++) {
512         frame->base[i]     = buf->base[i];  // XXX h264.c uses base though it shouldn't
513         frame->data[i]     = buf->data[i];
514         frame->linesize[i] = buf->linesize[i];
515     }
516
517     return 0;
518 }
519
520 static void codec_release_buffer(AVCodecContext *s, AVFrame *frame)
521 {
522     InputStream *ist = s->opaque;
523     FrameBuffer *buf = frame->opaque;
524     int i;
525
526     for (i = 0; i < FF_ARRAY_ELEMS(frame->data); i++)
527         frame->data[i] = NULL;
528
529     unref_buffer(ist, buf);
530 }
531
532 #if CONFIG_AVFILTER
533
534 static int configure_video_filters(InputStream *ist, OutputStream *ost)
535 {
536     AVFilterContext *last_filter, *filter;
537     /** filter graph containing all filters including input & output */
538     AVCodecContext *codec = ost->st->codec;
539     AVCodecContext *icodec = ist->st->codec;
540     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
541     AVRational sample_aspect_ratio;
542     char args[255];
543     int ret;
544
545     ost->graph = avfilter_graph_alloc();
546
547     if (ist->st->sample_aspect_ratio.num){
548         sample_aspect_ratio = ist->st->sample_aspect_ratio;
549     }else
550         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
551
552     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
553              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
554              sample_aspect_ratio.num, sample_aspect_ratio.den);
555
556     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
557                                        "src", args, NULL, ost->graph);
558     if (ret < 0)
559         return ret;
560     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
561                                        "out", NULL, &ffsink_ctx, ost->graph);
562     if (ret < 0)
563         return ret;
564     last_filter = ost->input_video_filter;
565
566     if (codec->width  != icodec->width || codec->height != icodec->height) {
567         snprintf(args, 255, "%d:%d:flags=0x%X",
568                  codec->width,
569                  codec->height,
570                  (unsigned)ost->sws_flags);
571         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
572                                                 NULL, args, NULL, ost->graph)) < 0)
573             return ret;
574         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
575             return ret;
576         last_filter = filter;
577     }
578
579     snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
580     ost->graph->scale_sws_opts = av_strdup(args);
581
582     if (ost->avfilter) {
583         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
584         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
585
586         outputs->name    = av_strdup("in");
587         outputs->filter_ctx = last_filter;
588         outputs->pad_idx = 0;
589         outputs->next    = NULL;
590
591         inputs->name    = av_strdup("out");
592         inputs->filter_ctx = ost->output_video_filter;
593         inputs->pad_idx = 0;
594         inputs->next    = NULL;
595
596         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
597             return ret;
598         av_freep(&ost->avfilter);
599     } else {
600         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
601             return ret;
602     }
603
604     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
605         return ret;
606
607     codec->width  = ost->output_video_filter->inputs[0]->w;
608     codec->height = ost->output_video_filter->inputs[0]->h;
609     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
610         ost->frame_aspect_ratio ? // overridden by the -aspect cli option
611         av_d2q(ost->frame_aspect_ratio*codec->height/codec->width, 255) :
612         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
613
614     return 0;
615 }
616 #endif /* CONFIG_AVFILTER */
617
618 static void term_exit(void)
619 {
620     av_log(NULL, AV_LOG_QUIET, "");
621 }
622
623 static volatile int received_sigterm = 0;
624 static volatile int received_nb_signals = 0;
625
626 static void
627 sigterm_handler(int sig)
628 {
629     received_sigterm = sig;
630     received_nb_signals++;
631     term_exit();
632 }
633
634 static void term_init(void)
635 {
636     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
637     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
638 #ifdef SIGXCPU
639     signal(SIGXCPU, sigterm_handler);
640 #endif
641 }
642
643 static int decode_interrupt_cb(void *ctx)
644 {
645     return received_nb_signals > 1;
646 }
647
648 static const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
649
650 void exit_program(int ret)
651 {
652     int i;
653
654     /* close files */
655     for(i=0;i<nb_output_files;i++) {
656         AVFormatContext *s = output_files[i].ctx;
657         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
658             avio_close(s->pb);
659         avformat_free_context(s);
660         av_dict_free(&output_files[i].opts);
661     }
662     for(i=0;i<nb_input_files;i++) {
663         avformat_close_input(&input_files[i].ctx);
664     }
665     for (i = 0; i < nb_input_streams; i++) {
666         av_freep(&input_streams[i].decoded_frame);
667         av_freep(&input_streams[i].filtered_frame);
668         av_dict_free(&input_streams[i].opts);
669         free_buffer_pool(&input_streams[i]);
670     }
671
672     if (vstats_file)
673         fclose(vstats_file);
674     av_free(vstats_filename);
675
676     av_freep(&input_streams);
677     av_freep(&input_files);
678     av_freep(&output_streams);
679     av_freep(&output_files);
680
681     uninit_opts();
682     av_free(audio_buf);
683     av_free(audio_out);
684     allocated_audio_buf_size= allocated_audio_out_size= 0;
685
686 #if CONFIG_AVFILTER
687     avfilter_uninit();
688 #endif
689     avformat_network_deinit();
690
691     if (received_sigterm) {
692         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
693                (int) received_sigterm);
694         exit (255);
695     }
696
697     exit(ret);
698 }
699
700 static void assert_avoptions(AVDictionary *m)
701 {
702     AVDictionaryEntry *t;
703     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
704         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
705         exit_program(1);
706     }
707 }
708
709 static void assert_codec_experimental(AVCodecContext *c, int encoder)
710 {
711     const char *codec_string = encoder ? "encoder" : "decoder";
712     AVCodec *codec;
713     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
714         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
715         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
716                 "results.\nAdd '-strict experimental' if you want to use it.\n",
717                 codec_string, c->codec->name);
718         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
719         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
720             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
721                    codec_string, codec->name);
722         exit_program(1);
723     }
724 }
725
726 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
727 {
728     if(codec && codec->sample_fmts){
729         const enum AVSampleFormat *p= codec->sample_fmts;
730         for(; *p!=-1; p++){
731             if(*p == st->codec->sample_fmt)
732                 break;
733         }
734         if (*p == -1) {
735             av_log(NULL, AV_LOG_WARNING,
736                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
737                    av_get_sample_fmt_name(st->codec->sample_fmt),
738                    codec->name,
739                    av_get_sample_fmt_name(codec->sample_fmts[0]));
740             st->codec->sample_fmt = codec->sample_fmts[0];
741         }
742     }
743 }
744
745 /**
746  * Update the requested input sample format based on the output sample format.
747  * This is currently only used to request float output from decoders which
748  * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
749  * Ideally this will be removed in the future when decoders do not do format
750  * conversion and only output in their native format.
751  */
752 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
753                               AVCodecContext *enc)
754 {
755     /* if sample formats match or a decoder sample format has already been
756        requested, just return */
757     if (enc->sample_fmt == dec->sample_fmt ||
758         dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
759         return;
760
761     /* if decoder supports more than one output format */
762     if (dec_codec && dec_codec->sample_fmts &&
763         dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
764         dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
765         const enum AVSampleFormat *p;
766         int min_dec = -1, min_inc = -1;
767
768         /* find a matching sample format in the encoder */
769         for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
770             if (*p == enc->sample_fmt) {
771                 dec->request_sample_fmt = *p;
772                 return;
773             } else if (*p > enc->sample_fmt) {
774                 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
775             } else
776                 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
777         }
778
779         /* if none match, provide the one that matches quality closest */
780         dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
781                                   enc->sample_fmt - min_dec;
782     }
783 }
784
785 static void choose_sample_rate(AVStream *st, AVCodec *codec)
786 {
787     if(codec && codec->supported_samplerates){
788         const int *p= codec->supported_samplerates;
789         int best=0;
790         int best_dist=INT_MAX;
791         for(; *p; p++){
792             int dist= abs(st->codec->sample_rate - *p);
793             if(dist < best_dist){
794                 best_dist= dist;
795                 best= *p;
796             }
797         }
798         if(best_dist){
799             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
800         }
801         st->codec->sample_rate= best;
802     }
803 }
804
805 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
806 {
807     if(codec && codec->pix_fmts){
808         const enum PixelFormat *p= codec->pix_fmts;
809         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
810             if(st->codec->codec_id==CODEC_ID_MJPEG){
811                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
812             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
813                 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};
814             }
815         }
816         for (; *p != PIX_FMT_NONE; p++) {
817             if(*p == st->codec->pix_fmt)
818                 break;
819         }
820         if (*p == PIX_FMT_NONE) {
821             if(st->codec->pix_fmt != PIX_FMT_NONE)
822                 av_log(NULL, AV_LOG_WARNING,
823                         "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
824                         av_pix_fmt_descriptors[st->codec->pix_fmt].name,
825                         codec->name,
826                         av_pix_fmt_descriptors[codec->pix_fmts[0]].name);
827             st->codec->pix_fmt = codec->pix_fmts[0];
828         }
829     }
830 }
831
832 static double
833 get_sync_ipts(const OutputStream *ost)
834 {
835     const InputStream *ist = ost->sync_ist;
836     OutputFile *of = &output_files[ost->file_index];
837     return (double)(ist->pts - of->start_time)/AV_TIME_BASE;
838 }
839
840 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
841     int ret;
842
843     while(bsfc){
844         AVPacket new_pkt= *pkt;
845         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
846                                           &new_pkt.data, &new_pkt.size,
847                                           pkt->data, pkt->size,
848                                           pkt->flags & AV_PKT_FLAG_KEY);
849         if(a>0){
850             av_free_packet(pkt);
851             new_pkt.destruct= av_destruct_packet;
852         } else if(a<0){
853             av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
854                    bsfc->filter->name, pkt->stream_index,
855                    avctx->codec ? avctx->codec->name : "copy");
856             print_error("", a);
857             if (exit_on_error)
858                 exit_program(1);
859         }
860         *pkt= new_pkt;
861
862         bsfc= bsfc->next;
863     }
864
865     ret= av_interleaved_write_frame(s, pkt);
866     if(ret < 0){
867         print_error("av_interleaved_write_frame()", ret);
868         exit_program(1);
869     }
870 }
871
872 static void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
873 {
874     int fill_char = 0x00;
875     if (sample_fmt == AV_SAMPLE_FMT_U8)
876         fill_char = 0x80;
877     memset(buf, fill_char, size);
878 }
879
880 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
881                          InputStream *ist, AVFrame *decoded_frame)
882 {
883     uint8_t *buftmp;
884     int64_t audio_out_size, audio_buf_size;
885
886     int size_out, frame_bytes, ret, resample_changed;
887     AVCodecContext *enc= ost->st->codec;
888     AVCodecContext *dec= ist->st->codec;
889     int osize = av_get_bytes_per_sample(enc->sample_fmt);
890     int isize = av_get_bytes_per_sample(dec->sample_fmt);
891     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
892     uint8_t *buf = decoded_frame->data[0];
893     int size     = decoded_frame->nb_samples * dec->channels * isize;
894     int64_t allocated_for_size = size;
895
896 need_realloc:
897     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
898     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
899     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
900     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
901     audio_buf_size*= osize*enc->channels;
902
903     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
904     if(coded_bps > 8*osize)
905         audio_out_size= audio_out_size * coded_bps / (8*osize);
906     audio_out_size += FF_MIN_BUFFER_SIZE;
907
908     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
909         av_log(NULL, AV_LOG_FATAL, "Buffer sizes too large\n");
910         exit_program(1);
911     }
912
913     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
914     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
915     if (!audio_buf || !audio_out){
916         av_log(NULL, AV_LOG_FATAL, "Out of memory in do_audio_out\n");
917         exit_program(1);
918     }
919
920     if (enc->channels != dec->channels || enc->sample_rate != dec->sample_rate)
921         ost->audio_resample = 1;
922
923     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
924                        ost->resample_channels    != dec->channels   ||
925                        ost->resample_sample_rate != dec->sample_rate;
926
927     if ((ost->audio_resample && !ost->resample) || resample_changed) {
928         if (resample_changed) {
929             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",
930                    ist->file_index, ist->st->index,
931                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
932                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
933             ost->resample_sample_fmt  = dec->sample_fmt;
934             ost->resample_channels    = dec->channels;
935             ost->resample_sample_rate = dec->sample_rate;
936             if (ost->resample)
937                 audio_resample_close(ost->resample);
938         }
939         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
940         if (audio_sync_method <= 1 &&
941             ost->resample_sample_fmt  == enc->sample_fmt &&
942             ost->resample_channels    == enc->channels   &&
943             ost->resample_sample_rate == enc->sample_rate) {
944             ost->resample = NULL;
945             ost->audio_resample = 0;
946         } else if (ost->audio_resample) {
947             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
948                 av_log(NULL, AV_LOG_WARNING, "Using s16 intermediate sample format for resampling\n");
949             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
950                                                    enc->sample_rate, dec->sample_rate,
951                                                    enc->sample_fmt,  dec->sample_fmt,
952                                                    16, 10, 0, 0.8);
953             if (!ost->resample) {
954                 av_log(NULL, AV_LOG_FATAL, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
955                        dec->channels, dec->sample_rate,
956                        enc->channels, enc->sample_rate);
957                 exit_program(1);
958             }
959         }
960     }
961
962 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
963     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
964         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
965         if (ost->reformat_ctx)
966             av_audio_convert_free(ost->reformat_ctx);
967         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
968                                                    dec->sample_fmt, 1, NULL, 0);
969         if (!ost->reformat_ctx) {
970             av_log(NULL, AV_LOG_FATAL, "Cannot convert %s sample format to %s sample format\n",
971                    av_get_sample_fmt_name(dec->sample_fmt),
972                    av_get_sample_fmt_name(enc->sample_fmt));
973             exit_program(1);
974         }
975         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
976     }
977
978     if(audio_sync_method){
979         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
980                 - av_fifo_size(ost->fifo)/(enc->channels * osize);
981         int idelta = delta * dec->sample_rate / enc->sample_rate;
982         int byte_delta = idelta * isize * dec->channels;
983
984         //FIXME resample delay
985         if(fabs(delta) > 50){
986             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
987                 if(byte_delta < 0){
988                     byte_delta= FFMAX(byte_delta, -size);
989                     size += byte_delta;
990                     buf  -= byte_delta;
991                     av_log(NULL, AV_LOG_VERBOSE, "discarding %d audio samples\n",
992                            -byte_delta / (isize * dec->channels));
993                     if(!size)
994                         return;
995                     ist->is_start=0;
996                 }else{
997                     static uint8_t *input_tmp= NULL;
998                     input_tmp= av_realloc(input_tmp, byte_delta + size);
999
1000                     if(byte_delta > allocated_for_size - size){
1001                         allocated_for_size= byte_delta + (int64_t)size;
1002                         goto need_realloc;
1003                     }
1004                     ist->is_start=0;
1005
1006                     generate_silence(input_tmp, dec->sample_fmt, byte_delta);
1007                     memcpy(input_tmp + byte_delta, buf, size);
1008                     buf= input_tmp;
1009                     size += byte_delta;
1010                     av_log(NULL, AV_LOG_VERBOSE, "adding %d audio samples of silence\n", idelta);
1011                 }
1012             }else if(audio_sync_method>1){
1013                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
1014                 av_assert0(ost->audio_resample);
1015                 av_log(NULL, AV_LOG_VERBOSE, "compensating audio timestamp drift:%f compensation:%d in:%d\n",
1016                        delta, comp, enc->sample_rate);
1017 //                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));
1018                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
1019             }
1020         }
1021     }else
1022         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
1023                         - av_fifo_size(ost->fifo)/(enc->channels * osize); //FIXME wrong
1024
1025     if (ost->audio_resample) {
1026         buftmp = audio_buf;
1027         size_out = audio_resample(ost->resample,
1028                                   (short *)buftmp, (short *)buf,
1029                                   size / (dec->channels * isize));
1030         size_out = size_out * enc->channels * osize;
1031     } else {
1032         buftmp = buf;
1033         size_out = size;
1034     }
1035
1036     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
1037         const void *ibuf[6]= {buftmp};
1038         void *obuf[6]= {audio_buf};
1039         int istride[6]= {isize};
1040         int ostride[6]= {osize};
1041         int len= size_out/istride[0];
1042         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
1043             printf("av_audio_convert() failed\n");
1044             if (exit_on_error)
1045                 exit_program(1);
1046             return;
1047         }
1048         buftmp = audio_buf;
1049         size_out = len*osize;
1050     }
1051
1052     /* now encode as many frames as possible */
1053     if (enc->frame_size > 1) {
1054         /* output resampled raw samples */
1055         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
1056             av_log(NULL, AV_LOG_FATAL, "av_fifo_realloc2() failed\n");
1057             exit_program(1);
1058         }
1059         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
1060
1061         frame_bytes = enc->frame_size * osize * enc->channels;
1062
1063         while (av_fifo_size(ost->fifo) >= frame_bytes) {
1064             AVPacket pkt;
1065             av_init_packet(&pkt);
1066
1067             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
1068
1069             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1070
1071             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
1072                                        (short *)audio_buf);
1073             if (ret < 0) {
1074                 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1075                 exit_program(1);
1076             }
1077             audio_size += ret;
1078             pkt.stream_index= ost->index;
1079             pkt.data= audio_out;
1080             pkt.size= ret;
1081             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1082                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1083             pkt.flags |= AV_PKT_FLAG_KEY;
1084             write_frame(s, &pkt, enc, ost->bitstream_filters);
1085
1086             ost->sync_opts += enc->frame_size;
1087         }
1088     } else {
1089         AVPacket pkt;
1090         av_init_packet(&pkt);
1091
1092         ost->sync_opts += size_out / (osize * enc->channels);
1093
1094         /* output a pcm frame */
1095         /* determine the size of the coded buffer */
1096         size_out /= osize;
1097         if (coded_bps)
1098             size_out = size_out*coded_bps/8;
1099
1100         if(size_out > audio_out_size){
1101             av_log(NULL, AV_LOG_FATAL, "Internal error, buffer size too small\n");
1102             exit_program(1);
1103         }
1104
1105         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1106         ret = avcodec_encode_audio(enc, audio_out, size_out,
1107                                    (short *)buftmp);
1108         if (ret < 0) {
1109             av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1110             exit_program(1);
1111         }
1112         audio_size += ret;
1113         pkt.stream_index= ost->index;
1114         pkt.data= audio_out;
1115         pkt.size= ret;
1116         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1117             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1118         pkt.flags |= AV_PKT_FLAG_KEY;
1119         write_frame(s, &pkt, enc, ost->bitstream_filters);
1120     }
1121 }
1122
1123 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
1124 {
1125     AVCodecContext *dec;
1126     AVPicture *picture2;
1127     AVPicture picture_tmp;
1128     uint8_t *buf = 0;
1129
1130     dec = ist->st->codec;
1131
1132     /* deinterlace : must be done before any resize */
1133     if (do_deinterlace) {
1134         int size;
1135
1136         /* create temporary picture */
1137         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1138         buf = av_malloc(size);
1139         if (!buf)
1140             return;
1141
1142         picture2 = &picture_tmp;
1143         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1144
1145         if(avpicture_deinterlace(picture2, picture,
1146                                  dec->pix_fmt, dec->width, dec->height) < 0) {
1147             /* if error, do not deinterlace */
1148             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
1149             av_free(buf);
1150             buf = NULL;
1151             picture2 = picture;
1152         }
1153     } else {
1154         picture2 = picture;
1155     }
1156
1157     if (picture != picture2)
1158         *picture = *picture2;
1159     *bufp = buf;
1160 }
1161
1162 static void do_subtitle_out(AVFormatContext *s,
1163                             OutputStream *ost,
1164                             InputStream *ist,
1165                             AVSubtitle *sub,
1166                             int64_t pts)
1167 {
1168     static uint8_t *subtitle_out = NULL;
1169     int subtitle_out_max_size = 1024 * 1024;
1170     int subtitle_out_size, nb, i;
1171     AVCodecContext *enc;
1172     AVPacket pkt;
1173
1174     if (pts == AV_NOPTS_VALUE) {
1175         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
1176         if (exit_on_error)
1177             exit_program(1);
1178         return;
1179     }
1180
1181     enc = ost->st->codec;
1182
1183     if (!subtitle_out) {
1184         subtitle_out = av_malloc(subtitle_out_max_size);
1185     }
1186
1187     /* Note: DVB subtitle need one packet to draw them and one other
1188        packet to clear them */
1189     /* XXX: signal it in the codec context ? */
1190     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1191         nb = 2;
1192     else
1193         nb = 1;
1194
1195     for(i = 0; i < nb; i++) {
1196         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1197         // start_display_time is required to be 0
1198         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1199         sub->end_display_time -= sub->start_display_time;
1200         sub->start_display_time = 0;
1201         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1202                                                     subtitle_out_max_size, sub);
1203         if (subtitle_out_size < 0) {
1204             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
1205             exit_program(1);
1206         }
1207
1208         av_init_packet(&pkt);
1209         pkt.stream_index = ost->index;
1210         pkt.data = subtitle_out;
1211         pkt.size = subtitle_out_size;
1212         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1213         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1214             /* XXX: the pts correction is handled here. Maybe handling
1215                it in the codec would be better */
1216             if (i == 0)
1217                 pkt.pts += 90 * sub->start_display_time;
1218             else
1219                 pkt.pts += 90 * sub->end_display_time;
1220         }
1221         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1222     }
1223 }
1224
1225 static int bit_buffer_size= 1024*256;
1226 static uint8_t *bit_buffer= NULL;
1227
1228 static void do_video_resample(OutputStream *ost,
1229                               InputStream *ist,
1230                               AVFrame *in_picture,
1231                               AVFrame **out_picture)
1232 {
1233     int resample_changed = 0;
1234     AVCodecContext *dec = ist->st->codec;
1235     *out_picture = in_picture;
1236
1237     resample_changed = ost->resample_width   != dec->width  ||
1238                        ost->resample_height  != dec->height ||
1239                        ost->resample_pix_fmt != dec->pix_fmt;
1240
1241     if (resample_changed) {
1242         av_log(NULL, AV_LOG_INFO,
1243                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1244                ist->file_index, ist->st->index,
1245                ost->resample_width, ost->resample_height, av_get_pix_fmt_name(ost->resample_pix_fmt),
1246                dec->width         , dec->height         , av_get_pix_fmt_name(dec->pix_fmt));
1247         if(!ost->video_resample)
1248             ost->video_resample = 1;
1249     }
1250
1251 #if !CONFIG_AVFILTER
1252     if (ost->video_resample) {
1253         *out_picture = &ost->pict_tmp;
1254         if (resample_changed) {
1255             /* initialize a new scaler context */
1256             sws_freeContext(ost->img_resample_ctx);
1257             ost->img_resample_ctx = sws_getContext(
1258                 ist->st->codec->width,
1259                 ist->st->codec->height,
1260                 ist->st->codec->pix_fmt,
1261                 ost->st->codec->width,
1262                 ost->st->codec->height,
1263                 ost->st->codec->pix_fmt,
1264                 ost->sws_flags, NULL, NULL, NULL);
1265             if (ost->img_resample_ctx == NULL) {
1266                 av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
1267                 exit_program(1);
1268             }
1269         }
1270         sws_scale(ost->img_resample_ctx, in_picture->data, in_picture->linesize,
1271               0, ost->resample_height, (*out_picture)->data, (*out_picture)->linesize);
1272     }
1273 #else
1274     if (resample_changed) {
1275         avfilter_graph_free(&ost->graph);
1276         if (configure_video_filters(ist, ost)) {
1277             av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1278             exit_program(1);
1279         }
1280     }
1281 #endif
1282     if (resample_changed) {
1283         ost->resample_width   = dec->width;
1284         ost->resample_height  = dec->height;
1285         ost->resample_pix_fmt = dec->pix_fmt;
1286     }
1287 }
1288
1289
1290 static void do_video_out(AVFormatContext *s,
1291                          OutputStream *ost,
1292                          InputStream *ist,
1293                          AVFrame *in_picture,
1294                          int *frame_size, float quality)
1295 {
1296     int nb_frames, i, ret, format_video_sync;
1297     AVFrame *final_picture;
1298     AVCodecContext *enc;
1299     double sync_ipts;
1300
1301     enc = ost->st->codec;
1302
1303     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1304
1305     /* by default, we output a single frame */
1306     nb_frames = 1;
1307
1308     *frame_size = 0;
1309
1310     format_video_sync = video_sync_method;
1311     if (format_video_sync < 0)
1312         format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? 0 :
1313                             (s->oformat->flags & AVFMT_VARIABLE_FPS) ? 2 : 1;
1314
1315     if (format_video_sync) {
1316         double vdelta = sync_ipts - ost->sync_opts;
1317         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1318         if (vdelta < -1.1)
1319             nb_frames = 0;
1320         else if (format_video_sync == 2) {
1321             if(vdelta<=-0.6){
1322                 nb_frames=0;
1323             }else if(vdelta>0.6)
1324                 ost->sync_opts= lrintf(sync_ipts);
1325         }else if (vdelta > 1.1)
1326             nb_frames = lrintf(vdelta);
1327 //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);
1328         if (nb_frames == 0){
1329             ++nb_frames_drop;
1330             av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
1331         }else if (nb_frames > 1) {
1332             nb_frames_dup += nb_frames - 1;
1333             av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames-1);
1334         }
1335     }else
1336         ost->sync_opts= lrintf(sync_ipts);
1337
1338     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1339     if (nb_frames <= 0)
1340         return;
1341
1342     do_video_resample(ost, ist, in_picture, &final_picture);
1343
1344     /* duplicates frame if needed */
1345     for(i=0;i<nb_frames;i++) {
1346         AVPacket pkt;
1347         av_init_packet(&pkt);
1348         pkt.stream_index= ost->index;
1349
1350         if (s->oformat->flags & AVFMT_RAWPICTURE &&
1351             enc->codec->id == CODEC_ID_RAWVIDEO) {
1352             /* raw pictures are written as AVPicture structure to
1353                avoid any copies. We support temporarily the older
1354                method. */
1355             enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
1356             enc->coded_frame->top_field_first  = in_picture->top_field_first;
1357             pkt.data= (uint8_t *)final_picture;
1358             pkt.size=  sizeof(AVPicture);
1359             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1360             pkt.flags |= AV_PKT_FLAG_KEY;
1361
1362             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1363         } else {
1364             AVFrame big_picture;
1365
1366             big_picture= *final_picture;
1367             /* better than nothing: use input picture interlaced
1368                settings */
1369             big_picture.interlaced_frame = in_picture->interlaced_frame;
1370             if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
1371                 if (ost->top_field_first == -1)
1372                     big_picture.top_field_first = in_picture->top_field_first;
1373                 else
1374                     big_picture.top_field_first = !!ost->top_field_first;
1375             }
1376
1377             /* handles same_quant here. This is not correct because it may
1378                not be a global option */
1379             big_picture.quality = quality;
1380             if (!enc->me_threshold)
1381                 big_picture.pict_type = 0;
1382 //            big_picture.pts = AV_NOPTS_VALUE;
1383             big_picture.pts= ost->sync_opts;
1384 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1385 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1386             if (ost->forced_kf_index < ost->forced_kf_count &&
1387                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1388                 big_picture.pict_type = AV_PICTURE_TYPE_I;
1389                 ost->forced_kf_index++;
1390             }
1391             ret = avcodec_encode_video(enc,
1392                                        bit_buffer, bit_buffer_size,
1393                                        &big_picture);
1394             if (ret < 0) {
1395                 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1396                 exit_program(1);
1397             }
1398
1399             if(ret>0){
1400                 pkt.data= bit_buffer;
1401                 pkt.size= ret;
1402                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1403                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1404 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1405    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1406    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1407
1408                 if(enc->coded_frame->key_frame)
1409                     pkt.flags |= AV_PKT_FLAG_KEY;
1410                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
1411                 *frame_size = ret;
1412                 video_size += ret;
1413                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1414                 //        enc->frame_number-1, ret, enc->pict_type);
1415                 /* if two pass, output log */
1416                 if (ost->logfile && enc->stats_out) {
1417                     fprintf(ost->logfile, "%s", enc->stats_out);
1418                 }
1419             }
1420         }
1421         ost->sync_opts++;
1422         ost->frame_number++;
1423     }
1424 }
1425
1426 static double psnr(double d){
1427     return -10.0*log(d)/log(10.0);
1428 }
1429
1430 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
1431                            int frame_size)
1432 {
1433     AVCodecContext *enc;
1434     int frame_number;
1435     double ti1, bitrate, avg_bitrate;
1436
1437     /* this is executed just the first time do_video_stats is called */
1438     if (!vstats_file) {
1439         vstats_file = fopen(vstats_filename, "w");
1440         if (!vstats_file) {
1441             perror("fopen");
1442             exit_program(1);
1443         }
1444     }
1445
1446     enc = ost->st->codec;
1447     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1448         frame_number = ost->frame_number;
1449         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1450         if (enc->flags&CODEC_FLAG_PSNR)
1451             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1452
1453         fprintf(vstats_file,"f_size= %6d ", frame_size);
1454         /* compute pts value */
1455         ti1 = ost->sync_opts * av_q2d(enc->time_base);
1456         if (ti1 < 0.01)
1457             ti1 = 0.01;
1458
1459         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1460         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1461         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1462             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1463         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1464     }
1465 }
1466
1467 static void print_report(OutputFile *output_files,
1468                          OutputStream *ost_table, int nb_ostreams,
1469                          int is_last_report, int64_t timer_start)
1470 {
1471     char buf[1024];
1472     OutputStream *ost;
1473     AVFormatContext *oc;
1474     int64_t total_size;
1475     AVCodecContext *enc;
1476     int frame_number, vid, i;
1477     double bitrate, ti1, pts;
1478     static int64_t last_time = -1;
1479     static int qp_histogram[52];
1480
1481     if (!print_stats && !is_last_report)
1482         return;
1483
1484     if (!is_last_report) {
1485         int64_t cur_time;
1486         /* display the report every 0.5 seconds */
1487         cur_time = av_gettime();
1488         if (last_time == -1) {
1489             last_time = cur_time;
1490             return;
1491         }
1492         if ((cur_time - last_time) < 500000)
1493             return;
1494         last_time = cur_time;
1495     }
1496
1497
1498     oc = output_files[0].ctx;
1499
1500     total_size = avio_size(oc->pb);
1501     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
1502         total_size= avio_tell(oc->pb);
1503
1504     buf[0] = '\0';
1505     ti1 = 1e10;
1506     vid = 0;
1507     for(i=0;i<nb_ostreams;i++) {
1508         float q = -1;
1509         ost = &ost_table[i];
1510         enc = ost->st->codec;
1511         if (!ost->stream_copy && enc->coded_frame)
1512             q = enc->coded_frame->quality/(float)FF_QP2LAMBDA;
1513         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1514             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1515         }
1516         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1517             float t = (av_gettime()-timer_start) / 1000000.0;
1518
1519             frame_number = ost->frame_number;
1520             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1521                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0, q);
1522             if(is_last_report)
1523                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1524             if(qp_hist){
1525                 int j;
1526                 int qp = lrintf(q);
1527                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1528                     qp_histogram[qp]++;
1529                 for(j=0; j<32; j++)
1530                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1531             }
1532             if (enc->flags&CODEC_FLAG_PSNR){
1533                 int j;
1534                 double error, error_sum=0;
1535                 double scale, scale_sum=0;
1536                 char type[3]= {'Y','U','V'};
1537                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1538                 for(j=0; j<3; j++){
1539                     if(is_last_report){
1540                         error= enc->error[j];
1541                         scale= enc->width*enc->height*255.0*255.0*frame_number;
1542                     }else{
1543                         error= enc->coded_frame->error[j];
1544                         scale= enc->width*enc->height*255.0*255.0;
1545                     }
1546                     if(j) scale/=4;
1547                     error_sum += error;
1548                     scale_sum += scale;
1549                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1550                 }
1551                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1552             }
1553             vid = 1;
1554         }
1555         /* compute min output value */
1556         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1557         if ((pts < ti1) && (pts > 0))
1558             ti1 = pts;
1559     }
1560     if (ti1 < 0.01)
1561         ti1 = 0.01;
1562
1563     bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1564
1565     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1566             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1567             (double)total_size / 1024, ti1, bitrate);
1568
1569     if (nb_frames_dup || nb_frames_drop)
1570         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1571                 nb_frames_dup, nb_frames_drop);
1572
1573     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1574
1575     fflush(stderr);
1576
1577     if (is_last_report) {
1578         int64_t raw= audio_size + video_size + extra_size;
1579         av_log(NULL, AV_LOG_INFO, "\n");
1580         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1581                video_size/1024.0,
1582                audio_size/1024.0,
1583                extra_size/1024.0,
1584                100.0*(total_size - raw)/raw
1585         );
1586     }
1587 }
1588
1589 static void flush_encoders(OutputStream *ost_table, int nb_ostreams)
1590 {
1591     int i, ret;
1592
1593     for (i = 0; i < nb_ostreams; i++) {
1594         OutputStream   *ost = &ost_table[i];
1595         AVCodecContext *enc = ost->st->codec;
1596         AVFormatContext *os = output_files[ost->file_index].ctx;
1597
1598         if (!ost->encoding_needed)
1599             continue;
1600
1601         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1602             continue;
1603         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == CODEC_ID_RAWVIDEO)
1604             continue;
1605
1606         for(;;) {
1607             AVPacket pkt;
1608             int fifo_bytes;
1609             av_init_packet(&pkt);
1610             pkt.stream_index= ost->index;
1611
1612             switch (ost->st->codec->codec_type) {
1613             case AVMEDIA_TYPE_AUDIO:
1614                 fifo_bytes = av_fifo_size(ost->fifo);
1615                 ret = 0;
1616                 /* encode any samples remaining in fifo */
1617                 if (fifo_bytes > 0) {
1618                     int osize = av_get_bytes_per_sample(enc->sample_fmt);
1619                     int fs_tmp = enc->frame_size;
1620
1621                     av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
1622                     if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1623                         enc->frame_size = fifo_bytes / (osize * enc->channels);
1624                     } else { /* pad */
1625                         int frame_bytes = enc->frame_size*osize*enc->channels;
1626                         if (allocated_audio_buf_size < frame_bytes)
1627                             exit_program(1);
1628                         generate_silence(audio_buf+fifo_bytes, enc->sample_fmt, frame_bytes - fifo_bytes);
1629                     }
1630
1631                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
1632                     pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1633                                               ost->st->time_base.num, enc->sample_rate);
1634                     enc->frame_size = fs_tmp;
1635                 }
1636                 if (ret <= 0) {
1637                     ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1638                 }
1639                 if (ret < 0) {
1640                     av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
1641                     exit_program(1);
1642                 }
1643                 audio_size += ret;
1644                 pkt.flags |= AV_PKT_FLAG_KEY;
1645                 break;
1646             case AVMEDIA_TYPE_VIDEO:
1647                 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1648                 if (ret < 0) {
1649                     av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1650                     exit_program(1);
1651                 }
1652                 video_size += ret;
1653                 if(enc->coded_frame && enc->coded_frame->key_frame)
1654                     pkt.flags |= AV_PKT_FLAG_KEY;
1655                 if (ost->logfile && enc->stats_out) {
1656                     fprintf(ost->logfile, "%s", enc->stats_out);
1657                 }
1658                 break;
1659             default:
1660                 ret=-1;
1661             }
1662
1663             if (ret <= 0)
1664                 break;
1665             pkt.data = bit_buffer;
1666             pkt.size = ret;
1667             if (enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1668                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1669             write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
1670         }
1671     }
1672 }
1673
1674 /*
1675  * Check whether a packet from ist should be written into ost at this time
1676  */
1677 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1678 {
1679     OutputFile *of = &output_files[ost->file_index];
1680     int ist_index  = ist - input_streams;
1681
1682     if (ost->source_index != ist_index)
1683         return 0;
1684
1685     if (of->start_time && ist->pts < of->start_time)
1686         return 0;
1687
1688     if (of->recording_time != INT64_MAX &&
1689         av_compare_ts(ist->pts, AV_TIME_BASE_Q, of->recording_time + of->start_time,
1690                       (AVRational){1, 1000000}) >= 0) {
1691         ost->is_past_recording_time = 1;
1692         return 0;
1693     }
1694
1695     return 1;
1696 }
1697
1698 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1699 {
1700     OutputFile *of = &output_files[ost->file_index];
1701     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1702     AVPacket opkt;
1703
1704     av_init_packet(&opkt);
1705
1706     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1707         !ost->copy_initial_nonkeyframes)
1708         return;
1709
1710     /* force the input stream PTS */
1711     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1712         audio_size += pkt->size;
1713     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1714         video_size += pkt->size;
1715         ost->sync_opts++;
1716     }
1717
1718     opkt.stream_index = ost->index;
1719     if (pkt->pts != AV_NOPTS_VALUE)
1720         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1721     else
1722         opkt.pts = AV_NOPTS_VALUE;
1723
1724     if (pkt->dts == AV_NOPTS_VALUE)
1725         opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1726     else
1727         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1728     opkt.dts -= ost_tb_start_time;
1729
1730     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1731     opkt.flags    = pkt->flags;
1732
1733     //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1734     if(   ost->st->codec->codec_id != CODEC_ID_H264
1735        && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1736        && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1737        ) {
1738         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1739             opkt.destruct = av_destruct_packet;
1740     } else {
1741         opkt.data = pkt->data;
1742         opkt.size = pkt->size;
1743     }
1744
1745     write_frame(of->ctx, &opkt, ost->st->codec, ost->bitstream_filters);
1746     ost->st->codec->frame_number++;
1747     ost->frame_number++;
1748     av_free_packet(&opkt);
1749 }
1750
1751 static void rate_emu_sleep(InputStream *ist)
1752 {
1753     if (input_files[ist->file_index].rate_emu) {
1754         int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1755         int64_t now = av_gettime() - ist->start;
1756         if (pts > now)
1757             usleep(pts - now);
1758     }
1759 }
1760
1761 static int transcode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1762 {
1763     AVFrame *decoded_frame;
1764     AVCodecContext *avctx = ist->st->codec;
1765     int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1766     int i, ret;
1767
1768     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1769         return AVERROR(ENOMEM);
1770     else
1771         avcodec_get_frame_defaults(ist->decoded_frame);
1772     decoded_frame = ist->decoded_frame;
1773
1774     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1775     if (ret < 0) {
1776         return ret;
1777     }
1778
1779     if (!*got_output) {
1780         /* no audio frame */
1781         return ret;
1782     }
1783
1784     /* if the decoder provides a pts, use it instead of the last packet pts.
1785        the decoder could be delaying output by a packet or more. */
1786     if (decoded_frame->pts != AV_NOPTS_VALUE)
1787         ist->next_pts = decoded_frame->pts;
1788
1789     /* increment next_pts to use for the case where the input stream does not
1790        have timestamps or there are multiple frames in the packet */
1791     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1792                      avctx->sample_rate;
1793
1794     // preprocess audio (volume)
1795     if (audio_volume != 256) {
1796         int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1797         void *samples = decoded_frame->data[0];
1798         switch (avctx->sample_fmt) {
1799         case AV_SAMPLE_FMT_U8:
1800         {
1801             uint8_t *volp = samples;
1802             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1803                 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1804                 *volp++ = av_clip_uint8(v);
1805             }
1806             break;
1807         }
1808         case AV_SAMPLE_FMT_S16:
1809         {
1810             int16_t *volp = samples;
1811             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1812                 int v = ((*volp) * audio_volume + 128) >> 8;
1813                 *volp++ = av_clip_int16(v);
1814             }
1815             break;
1816         }
1817         case AV_SAMPLE_FMT_S32:
1818         {
1819             int32_t *volp = samples;
1820             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1821                 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1822                 *volp++ = av_clipl_int32(v);
1823             }
1824             break;
1825         }
1826         case AV_SAMPLE_FMT_FLT:
1827         {
1828             float *volp = samples;
1829             float scale = audio_volume / 256.f;
1830             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1831                 *volp++ *= scale;
1832             }
1833             break;
1834         }
1835         case AV_SAMPLE_FMT_DBL:
1836         {
1837             double *volp = samples;
1838             double scale = audio_volume / 256.;
1839             for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1840                 *volp++ *= scale;
1841             }
1842             break;
1843         }
1844         default:
1845             av_log(NULL, AV_LOG_FATAL,
1846                    "Audio volume adjustment on sample format %s is not supported.\n",
1847                    av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1848             exit_program(1);
1849         }
1850     }
1851
1852     rate_emu_sleep(ist);
1853
1854     for (i = 0; i < nb_output_streams; i++) {
1855         OutputStream *ost = &output_streams[i];
1856
1857         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1858             continue;
1859         do_audio_out(output_files[ost->file_index].ctx, ost, ist, decoded_frame);
1860     }
1861
1862     return ret;
1863 }
1864
1865 static int transcode_video(InputStream *ist, AVPacket *pkt, int *got_output, int64_t *pkt_pts)
1866 {
1867     AVFrame *decoded_frame, *filtered_frame = NULL;
1868     void *buffer_to_free = NULL;
1869     int i, ret = 0;
1870     float quality;
1871 #if CONFIG_AVFILTER
1872     int frame_available = 1;
1873 #endif
1874
1875     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1876         return AVERROR(ENOMEM);
1877     else
1878         avcodec_get_frame_defaults(ist->decoded_frame);
1879     decoded_frame = ist->decoded_frame;
1880     pkt->pts  = *pkt_pts;
1881     pkt->dts  = ist->pts;
1882     *pkt_pts  = AV_NOPTS_VALUE;
1883
1884     ret = avcodec_decode_video2(ist->st->codec,
1885                                 decoded_frame, got_output, pkt);
1886     if (ret < 0)
1887         return ret;
1888
1889     quality = same_quant ? decoded_frame->quality : 0;
1890     if (!*got_output) {
1891         /* no picture yet */
1892         return ret;
1893     }
1894     ist->next_pts = ist->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1895                                                  decoded_frame->pkt_dts);
1896     if (pkt->duration)
1897         ist->next_pts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1898     else if (ist->st->codec->time_base.num != 0) {
1899         int ticks      = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1900                                            ist->st->codec->ticks_per_frame;
1901         ist->next_pts += ((int64_t)AV_TIME_BASE *
1902                           ist->st->codec->time_base.num * ticks) /
1903                           ist->st->codec->time_base.den;
1904     }
1905     pkt->size = 0;
1906     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1907
1908     rate_emu_sleep(ist);
1909
1910     for (i = 0; i < nb_output_streams; i++) {
1911         OutputStream *ost = &output_streams[i];
1912         int frame_size;
1913
1914         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1915             continue;
1916
1917 #if CONFIG_AVFILTER
1918         if (ost->input_video_filter) {
1919             AVRational sar;
1920             if (ist->st->sample_aspect_ratio.num)
1921                 sar = ist->st->sample_aspect_ratio;
1922             else
1923                 sar = ist->st->codec->sample_aspect_ratio;
1924             av_vsrc_buffer_add_frame(ost->input_video_filter, decoded_frame, ist->pts, sar);
1925             if (!ist->filtered_frame && !(ist->filtered_frame = avcodec_alloc_frame())) {
1926                 av_free(buffer_to_free);
1927                 return AVERROR(ENOMEM);
1928             } else
1929                 avcodec_get_frame_defaults(ist->filtered_frame);
1930             filtered_frame = ist->filtered_frame;
1931             frame_available = avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1932         }
1933         while (frame_available) {
1934             AVRational ist_pts_tb;
1935             if (ost->output_video_filter)
1936                 get_filtered_video_frame(ost->output_video_filter, filtered_frame, &ost->picref, &ist_pts_tb);
1937             if (ost->picref)
1938                 ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
1939             if (ost->picref->video && !ost->frame_aspect_ratio)
1940                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
1941 #else
1942             filtered_frame = decoded_frame;
1943 #endif
1944
1945             do_video_out(output_files[ost->file_index].ctx, ost, ist, filtered_frame, &frame_size,
1946                          same_quant ? quality : ost->st->codec->global_quality);
1947             if (vstats_filename && frame_size)
1948                 do_video_stats(output_files[ost->file_index].ctx, ost, frame_size);
1949 #if CONFIG_AVFILTER
1950             frame_available = ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
1951             if (ost->picref)
1952                 avfilter_unref_buffer(ost->picref);
1953         }
1954 #endif
1955     }
1956
1957     av_free(buffer_to_free);
1958     return ret;
1959 }
1960
1961 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1962 {
1963     AVSubtitle subtitle;
1964     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1965                                           &subtitle, got_output, pkt);
1966     if (ret < 0)
1967         return ret;
1968     if (!*got_output)
1969         return ret;
1970
1971     rate_emu_sleep(ist);
1972
1973     for (i = 0; i < nb_output_streams; i++) {
1974         OutputStream *ost = &output_streams[i];
1975
1976         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1977             continue;
1978
1979         do_subtitle_out(output_files[ost->file_index].ctx, ost, ist, &subtitle, pkt->pts);
1980     }
1981
1982     avsubtitle_free(&subtitle);
1983     return ret;
1984 }
1985
1986 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1987 static int output_packet(InputStream *ist,
1988                          OutputStream *ost_table, int nb_ostreams,
1989                          const AVPacket *pkt)
1990 {
1991     int i;
1992     int got_output;
1993     int64_t pkt_pts = AV_NOPTS_VALUE;
1994     AVPacket avpkt;
1995
1996     if (ist->next_pts == AV_NOPTS_VALUE)
1997         ist->next_pts = ist->pts;
1998
1999     if (pkt == NULL) {
2000         /* EOF handling */
2001         av_init_packet(&avpkt);
2002         avpkt.data = NULL;
2003         avpkt.size = 0;
2004         goto handle_eof;
2005     } else {
2006         avpkt = *pkt;
2007     }
2008
2009     if(pkt->dts != AV_NOPTS_VALUE)
2010         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2011     if(pkt->pts != AV_NOPTS_VALUE)
2012         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2013
2014     //while we have more to decode or while the decoder did output something on EOF
2015     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2016         int ret = 0;
2017     handle_eof:
2018
2019         ist->pts = ist->next_pts;
2020
2021         if (avpkt.size && avpkt.size != pkt->size) {
2022             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2023                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2024             ist->showed_multi_packet_warning = 1;
2025         }
2026
2027         switch(ist->st->codec->codec_type) {
2028         case AVMEDIA_TYPE_AUDIO:
2029             ret = transcode_audio    (ist, &avpkt, &got_output);
2030             break;
2031         case AVMEDIA_TYPE_VIDEO:
2032             ret = transcode_video    (ist, &avpkt, &got_output, &pkt_pts);
2033             break;
2034         case AVMEDIA_TYPE_SUBTITLE:
2035             ret = transcode_subtitles(ist, &avpkt, &got_output);
2036             break;
2037         default:
2038             return -1;
2039         }
2040
2041         if (ret < 0)
2042             return ret;
2043         // touch data and size only if not EOF
2044         if (pkt) {
2045             avpkt.data += ret;
2046             avpkt.size -= ret;
2047         }
2048         if (!got_output) {
2049             continue;
2050         }
2051     }
2052
2053     /* handle stream copy */
2054     if (!ist->decoding_needed) {
2055         rate_emu_sleep(ist);
2056         ist->pts = ist->next_pts;
2057         switch (ist->st->codec->codec_type) {
2058         case AVMEDIA_TYPE_AUDIO:
2059             ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2060                              ist->st->codec->sample_rate;
2061             break;
2062         case AVMEDIA_TYPE_VIDEO:
2063             if (ist->st->codec->time_base.num != 0) {
2064                 int ticks = ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2065                 ist->next_pts += ((int64_t)AV_TIME_BASE *
2066                                   ist->st->codec->time_base.num * ticks) /
2067                                   ist->st->codec->time_base.den;
2068             }
2069             break;
2070         }
2071     }
2072     for (i = 0; pkt && i < nb_ostreams; i++) {
2073         OutputStream *ost = &ost_table[i];
2074
2075         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2076             continue;
2077
2078         do_streamcopy(ist, ost, pkt);
2079     }
2080
2081     return 0;
2082 }
2083
2084 static void print_sdp(OutputFile *output_files, int n)
2085 {
2086     char sdp[2048];
2087     int i;
2088     AVFormatContext **avc = av_malloc(sizeof(*avc)*n);
2089
2090     if (!avc)
2091         exit_program(1);
2092     for (i = 0; i < n; i++)
2093         avc[i] = output_files[i].ctx;
2094
2095     av_sdp_create(avc, n, sdp, sizeof(sdp));
2096     printf("SDP:\n%s\n", sdp);
2097     fflush(stdout);
2098     av_freep(&avc);
2099 }
2100
2101 static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
2102                              char *error, int error_len)
2103 {
2104     int i;
2105     InputStream *ist = &input_streams[ist_index];
2106     if (ist->decoding_needed) {
2107         AVCodec *codec = ist->dec;
2108         if (!codec) {
2109             snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
2110                     ist->st->codec->codec_id, ist->file_index, ist->st->index);
2111             return AVERROR(EINVAL);
2112         }
2113
2114         /* update requested sample format for the decoder based on the
2115            corresponding encoder sample format */
2116         for (i = 0; i < nb_output_streams; i++) {
2117             OutputStream *ost = &output_streams[i];
2118             if (ost->source_index == ist_index) {
2119                 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
2120                 break;
2121             }
2122         }
2123
2124         if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
2125             ist->st->codec->get_buffer     = codec_get_buffer;
2126             ist->st->codec->release_buffer = codec_release_buffer;
2127             ist->st->codec->opaque         = ist;
2128         }
2129
2130         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
2131             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
2132                     ist->file_index, ist->st->index);
2133             return AVERROR(EINVAL);
2134         }
2135         assert_codec_experimental(ist->st->codec, 0);
2136         assert_avoptions(ist->opts);
2137     }
2138
2139     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;
2140     ist->next_pts = AV_NOPTS_VALUE;
2141     init_pts_correction(&ist->pts_ctx);
2142     ist->is_start = 1;
2143
2144     return 0;
2145 }
2146
2147 static int transcode_init(OutputFile *output_files,
2148                           int nb_output_files,
2149                           InputFile *input_files,
2150                           int nb_input_files)
2151 {
2152     int ret = 0, i, j, k;
2153     AVFormatContext *oc;
2154     AVCodecContext *codec, *icodec;
2155     OutputStream *ost;
2156     InputStream *ist;
2157     char error[1024];
2158     int want_sdp = 1;
2159
2160     /* init framerate emulation */
2161     for (i = 0; i < nb_input_files; i++) {
2162         InputFile *ifile = &input_files[i];
2163         if (ifile->rate_emu)
2164             for (j = 0; j < ifile->nb_streams; j++)
2165                 input_streams[j + ifile->ist_index].start = av_gettime();
2166     }
2167
2168     /* output stream init */
2169     for (i = 0; i < nb_output_files; i++) {
2170         oc = output_files[i].ctx;
2171         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2172             av_dump_format(oc, i, oc->filename, 1);
2173             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2174             return AVERROR(EINVAL);
2175         }
2176     }
2177
2178     /* for each output stream, we compute the right encoding parameters */
2179     for (i = 0; i < nb_output_streams; i++) {
2180         ost = &output_streams[i];
2181         oc  = output_files[ost->file_index].ctx;
2182         ist = &input_streams[ost->source_index];
2183
2184         if (ost->attachment_filename)
2185             continue;
2186
2187         codec  = ost->st->codec;
2188         icodec = ist->st->codec;
2189
2190         ost->st->disposition          = ist->st->disposition;
2191         codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2192         codec->chroma_sample_location = icodec->chroma_sample_location;
2193
2194         if (ost->stream_copy) {
2195             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2196
2197             if (extra_size > INT_MAX) {
2198                 return AVERROR(EINVAL);
2199             }
2200
2201             /* if stream_copy is selected, no need to decode or encode */
2202             codec->codec_id   = icodec->codec_id;
2203             codec->codec_type = icodec->codec_type;
2204
2205             if (!codec->codec_tag) {
2206                 if (!oc->oformat->codec_tag ||
2207                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2208                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2209                     codec->codec_tag = icodec->codec_tag;
2210             }
2211
2212             codec->bit_rate       = icodec->bit_rate;
2213             codec->rc_max_rate    = icodec->rc_max_rate;
2214             codec->rc_buffer_size = icodec->rc_buffer_size;
2215             codec->field_order    = icodec->field_order;
2216             codec->extradata      = av_mallocz(extra_size);
2217             if (!codec->extradata) {
2218                 return AVERROR(ENOMEM);
2219             }
2220             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2221             codec->extradata_size = icodec->extradata_size;
2222             if (!copy_tb) {
2223                 codec->time_base      = icodec->time_base;
2224                 codec->time_base.num *= icodec->ticks_per_frame;
2225                 av_reduce(&codec->time_base.num, &codec->time_base.den,
2226                           codec->time_base.num, codec->time_base.den, INT_MAX);
2227             } else
2228                 codec->time_base = ist->st->time_base;
2229
2230             switch(codec->codec_type) {
2231             case AVMEDIA_TYPE_AUDIO:
2232                 if(audio_volume != 256) {
2233                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2234                     exit_program(1);
2235                 }
2236                 codec->channel_layout     = icodec->channel_layout;
2237                 codec->sample_rate        = icodec->sample_rate;
2238                 codec->channels           = icodec->channels;
2239                 codec->frame_size         = icodec->frame_size;
2240                 codec->audio_service_type = icodec->audio_service_type;
2241                 codec->block_align        = icodec->block_align;
2242                 break;
2243             case AVMEDIA_TYPE_VIDEO:
2244                 codec->pix_fmt            = icodec->pix_fmt;
2245                 codec->width              = icodec->width;
2246                 codec->height             = icodec->height;
2247                 codec->has_b_frames       = icodec->has_b_frames;
2248                 if (!codec->sample_aspect_ratio.num) {
2249                     codec->sample_aspect_ratio   =
2250                     ost->st->sample_aspect_ratio =
2251                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2252                         ist->st->codec->sample_aspect_ratio.num ?
2253                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2254                 }
2255                 break;
2256             case AVMEDIA_TYPE_SUBTITLE:
2257                 codec->width  = icodec->width;
2258                 codec->height = icodec->height;
2259                 break;
2260             case AVMEDIA_TYPE_DATA:
2261             case AVMEDIA_TYPE_ATTACHMENT:
2262                 break;
2263             default:
2264                 abort();
2265             }
2266         } else {
2267             if (!ost->enc)
2268                 ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
2269
2270             ist->decoding_needed = 1;
2271             ost->encoding_needed = 1;
2272
2273             switch(codec->codec_type) {
2274             case AVMEDIA_TYPE_AUDIO:
2275                 ost->fifo = av_fifo_alloc(1024);
2276                 if (!ost->fifo) {
2277                     return AVERROR(ENOMEM);
2278                 }
2279                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
2280
2281                 if (!codec->sample_rate)
2282                     codec->sample_rate = icodec->sample_rate;
2283                 choose_sample_rate(ost->st, ost->enc);
2284                 codec->time_base = (AVRational){1, codec->sample_rate};
2285
2286                 if (codec->sample_fmt == AV_SAMPLE_FMT_NONE)
2287                     codec->sample_fmt = icodec->sample_fmt;
2288                 choose_sample_fmt(ost->st, ost->enc);
2289
2290                 if (!codec->channels)
2291                     codec->channels = icodec->channels;
2292                 codec->channel_layout = icodec->channel_layout;
2293                 if (av_get_channel_layout_nb_channels(codec->channel_layout) != codec->channels)
2294                     codec->channel_layout = 0;
2295
2296                 ost->audio_resample       = codec-> sample_rate != icodec->sample_rate || audio_sync_method > 1;
2297                 icodec->request_channels  = codec-> channels;
2298                 ost->resample_sample_fmt  = icodec->sample_fmt;
2299                 ost->resample_sample_rate = icodec->sample_rate;
2300                 ost->resample_channels    = icodec->channels;
2301                 break;
2302             case AVMEDIA_TYPE_VIDEO:
2303                 if (codec->pix_fmt == PIX_FMT_NONE)
2304                     codec->pix_fmt = icodec->pix_fmt;
2305                 choose_pixel_fmt(ost->st, ost->enc);
2306
2307                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2308                     av_log(NULL, AV_LOG_FATAL, "Video pixel format is unknown, stream cannot be encoded\n");
2309                     exit_program(1);
2310                 }
2311
2312                 if (!codec->width || !codec->height) {
2313                     codec->width  = icodec->width;
2314                     codec->height = icodec->height;
2315                 }
2316
2317                 ost->video_resample = codec->width   != icodec->width  ||
2318                                       codec->height  != icodec->height ||
2319                                       codec->pix_fmt != icodec->pix_fmt;
2320                 if (ost->video_resample) {
2321 #if !CONFIG_AVFILTER
2322                     avcodec_get_frame_defaults(&ost->pict_tmp);
2323                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2324                                        codec->width, codec->height)) {
2325                         av_log(NULL, AV_LOG_FATAL, "Cannot allocate temp picture, check pix fmt\n");
2326                         exit_program(1);
2327                     }
2328                     ost->img_resample_ctx = sws_getContext(
2329                         icodec->width,
2330                         icodec->height,
2331                         icodec->pix_fmt,
2332                         codec->width,
2333                         codec->height,
2334                         codec->pix_fmt,
2335                         ost->sws_flags, NULL, NULL, NULL);
2336                     if (ost->img_resample_ctx == NULL) {
2337                         av_log(NULL, AV_LOG_FATAL, "Cannot get resampling context\n");
2338                         exit_program(1);
2339                     }
2340 #endif
2341                     codec->bits_per_raw_sample= 0;
2342                 }
2343
2344                 ost->resample_height  = icodec->height;
2345                 ost->resample_width   = icodec->width;
2346                 ost->resample_pix_fmt = icodec->pix_fmt;
2347
2348                 if (!ost->frame_rate.num)
2349                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25,1};
2350                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2351                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2352                     ost->frame_rate = ost->enc->supported_framerates[idx];
2353                 }
2354                 codec->time_base = (AVRational){ost->frame_rate.den, ost->frame_rate.num};
2355
2356 #if CONFIG_AVFILTER
2357                 if (configure_video_filters(ist, ost)) {
2358                     av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2359                     exit(1);
2360                 }
2361 #endif
2362                 break;
2363             case AVMEDIA_TYPE_SUBTITLE:
2364                 break;
2365             default:
2366                 abort();
2367                 break;
2368             }
2369             /* two pass mode */
2370             if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2371                 char logfilename[1024];
2372                 FILE *f;
2373
2374                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2375                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2376                          i);
2377                 if (codec->flags & CODEC_FLAG_PASS1) {
2378                     f = fopen(logfilename, "wb");
2379                     if (!f) {
2380                         av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2381                                logfilename, strerror(errno));
2382                         exit_program(1);
2383                     }
2384                     ost->logfile = f;
2385                 } else {
2386                     char  *logbuffer;
2387                     size_t logbuffer_size;
2388                     if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2389                         av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2390                                logfilename);
2391                         exit_program(1);
2392                     }
2393                     codec->stats_in = logbuffer;
2394                 }
2395             }
2396         }
2397         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2398             int        size = codec->width * codec->height;
2399             bit_buffer_size = FFMAX(bit_buffer_size, 6*size + 200);
2400         }
2401     }
2402
2403     if (!bit_buffer)
2404         bit_buffer = av_malloc(bit_buffer_size);
2405     if (!bit_buffer) {
2406         av_log(NULL, AV_LOG_ERROR, "Cannot allocate %d bytes output buffer\n",
2407                bit_buffer_size);
2408         return AVERROR(ENOMEM);
2409     }
2410
2411     /* open each encoder */
2412     for (i = 0; i < nb_output_streams; i++) {
2413         ost = &output_streams[i];
2414         if (ost->encoding_needed) {
2415             AVCodec      *codec = ost->enc;
2416             AVCodecContext *dec = input_streams[ost->source_index].st->codec;
2417             if (!codec) {
2418                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d:%d",
2419                          ost->st->codec->codec_id, ost->file_index, ost->index);
2420                 ret = AVERROR(EINVAL);
2421                 goto dump_format;
2422             }
2423             if (dec->subtitle_header) {
2424                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
2425                 if (!ost->st->codec->subtitle_header) {
2426                     ret = AVERROR(ENOMEM);
2427                     goto dump_format;
2428                 }
2429                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2430                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2431             }
2432             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2433                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2434                         ost->file_index, ost->index);
2435                 ret = AVERROR(EINVAL);
2436                 goto dump_format;
2437             }
2438             assert_codec_experimental(ost->st->codec, 1);
2439             assert_avoptions(ost->opts);
2440             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2441                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2442                                              "It takes bits/s as argument, not kbits/s\n");
2443             extra_size += ost->st->codec->extradata_size;
2444
2445             if (ost->st->codec->me_threshold)
2446                 input_streams[ost->source_index].st->codec->debug |= FF_DEBUG_MV;
2447         }
2448     }
2449
2450     /* init input streams */
2451     for (i = 0; i < nb_input_streams; i++)
2452         if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error))) < 0)
2453             goto dump_format;
2454
2455     /* discard unused programs */
2456     for (i = 0; i < nb_input_files; i++) {
2457         InputFile *ifile = &input_files[i];
2458         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2459             AVProgram *p = ifile->ctx->programs[j];
2460             int discard  = AVDISCARD_ALL;
2461
2462             for (k = 0; k < p->nb_stream_indexes; k++)
2463                 if (!input_streams[ifile->ist_index + p->stream_index[k]].discard) {
2464                     discard = AVDISCARD_DEFAULT;
2465                     break;
2466                 }
2467             p->discard = discard;
2468         }
2469     }
2470
2471     /* open files and write file headers */
2472     for (i = 0; i < nb_output_files; i++) {
2473         oc = output_files[i].ctx;
2474         oc->interrupt_callback = int_cb;
2475         if (avformat_write_header(oc, &output_files[i].opts) < 0) {
2476             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2477             ret = AVERROR(EINVAL);
2478             goto dump_format;
2479         }
2480         assert_avoptions(output_files[i].opts);
2481         if (strcmp(oc->oformat->name, "rtp")) {
2482             want_sdp = 0;
2483         }
2484     }
2485
2486  dump_format:
2487     /* dump the file output parameters - cannot be done before in case
2488        of stream copy */
2489     for (i = 0; i < nb_output_files; i++) {
2490         av_dump_format(output_files[i].ctx, i, output_files[i].ctx->filename, 1);
2491     }
2492
2493     /* dump the stream mapping */
2494     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2495     for (i = 0; i < nb_output_streams; i++) {
2496         ost = &output_streams[i];
2497
2498         if (ost->attachment_filename) {
2499             /* an attached file */
2500             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2501                    ost->attachment_filename, ost->file_index, ost->index);
2502             continue;
2503         }
2504         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2505                input_streams[ost->source_index].file_index,
2506                input_streams[ost->source_index].st->index,
2507                ost->file_index,
2508                ost->index);
2509         if (ost->sync_ist != &input_streams[ost->source_index])
2510             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2511                    ost->sync_ist->file_index,
2512                    ost->sync_ist->st->index);
2513         if (ost->stream_copy)
2514             av_log(NULL, AV_LOG_INFO, " (copy)");
2515         else
2516             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index].dec ?
2517                    input_streams[ost->source_index].dec->name : "?",
2518                    ost->enc ? ost->enc->name : "?");
2519         av_log(NULL, AV_LOG_INFO, "\n");
2520     }
2521
2522     if (ret) {
2523         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2524         return ret;
2525     }
2526
2527     if (want_sdp) {
2528         print_sdp(output_files, nb_output_files);
2529     }
2530
2531     return 0;
2532 }
2533
2534 /*
2535  * The following code is the main loop of the file converter
2536  */
2537 static int transcode(OutputFile *output_files,
2538                      int nb_output_files,
2539                      InputFile *input_files,
2540                      int nb_input_files)
2541 {
2542     int ret, i;
2543     AVFormatContext *is, *os;
2544     OutputStream *ost;
2545     InputStream *ist;
2546     uint8_t *no_packet;
2547     int no_packet_count=0;
2548     int64_t timer_start;
2549
2550     if (!(no_packet = av_mallocz(nb_input_files)))
2551         exit_program(1);
2552
2553     ret = transcode_init(output_files, nb_output_files, input_files, nb_input_files);
2554     if (ret < 0)
2555         goto fail;
2556
2557     av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2558     term_init();
2559
2560     timer_start = av_gettime();
2561
2562     for(; received_sigterm == 0;) {
2563         int file_index, ist_index;
2564         AVPacket pkt;
2565         int64_t ipts_min;
2566         double opts_min;
2567
2568         ipts_min = INT64_MAX;
2569         opts_min= 1e100;
2570
2571         /* select the stream that we must read now by looking at the
2572            smallest output pts */
2573         file_index = -1;
2574         for (i = 0; i < nb_output_streams; i++) {
2575             OutputFile *of;
2576             int64_t ipts;
2577             double  opts;
2578             ost = &output_streams[i];
2579             of = &output_files[ost->file_index];
2580             os = output_files[ost->file_index].ctx;
2581             ist = &input_streams[ost->source_index];
2582             if (ost->is_past_recording_time || no_packet[ist->file_index] ||
2583                 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2584                 continue;
2585             opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2586             ipts = ist->pts;
2587             if (!input_files[ist->file_index].eof_reached){
2588                 if(ipts < ipts_min) {
2589                     ipts_min = ipts;
2590                     if(input_sync ) file_index = ist->file_index;
2591                 }
2592                 if(opts < opts_min) {
2593                     opts_min = opts;
2594                     if(!input_sync) file_index = ist->file_index;
2595                 }
2596             }
2597             if (ost->frame_number >= ost->max_frames) {
2598                 int j;
2599                 for (j = 0; j < of->ctx->nb_streams; j++)
2600                     output_streams[of->ost_index + j].is_past_recording_time = 1;
2601                 continue;
2602             }
2603         }
2604         /* if none, if is finished */
2605         if (file_index < 0) {
2606             if(no_packet_count){
2607                 no_packet_count=0;
2608                 memset(no_packet, 0, nb_input_files);
2609                 usleep(10000);
2610                 continue;
2611             }
2612             break;
2613         }
2614
2615         /* read a frame from it and output it in the fifo */
2616         is = input_files[file_index].ctx;
2617         ret= av_read_frame(is, &pkt);
2618         if(ret == AVERROR(EAGAIN)){
2619             no_packet[file_index]=1;
2620             no_packet_count++;
2621             continue;
2622         }
2623         if (ret < 0) {
2624             input_files[file_index].eof_reached = 1;
2625             if (opt_shortest)
2626                 break;
2627             else
2628                 continue;
2629         }
2630
2631         no_packet_count=0;
2632         memset(no_packet, 0, nb_input_files);
2633
2634         if (do_pkt_dump) {
2635             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2636                              is->streams[pkt.stream_index]);
2637         }
2638         /* the following test is needed in case new streams appear
2639            dynamically in stream : we ignore them */
2640         if (pkt.stream_index >= input_files[file_index].nb_streams)
2641             goto discard_packet;
2642         ist_index = input_files[file_index].ist_index + pkt.stream_index;
2643         ist = &input_streams[ist_index];
2644         if (ist->discard)
2645             goto discard_packet;
2646
2647         if (pkt.dts != AV_NOPTS_VALUE)
2648             pkt.dts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2649         if (pkt.pts != AV_NOPTS_VALUE)
2650             pkt.pts += av_rescale_q(input_files[ist->file_index].ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2651
2652         if(pkt.pts != AV_NOPTS_VALUE)
2653             pkt.pts *= ist->ts_scale;
2654         if(pkt.dts != AV_NOPTS_VALUE)
2655             pkt.dts *= ist->ts_scale;
2656
2657 //        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);
2658         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2659             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2660             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2661             int64_t delta= pkt_dts - ist->next_pts;
2662             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2663                 input_files[ist->file_index].ts_offset -= delta;
2664                 av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2665                        delta, input_files[ist->file_index].ts_offset);
2666                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2667                 if(pkt.pts != AV_NOPTS_VALUE)
2668                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2669             }
2670         }
2671
2672         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2673         if (output_packet(ist, output_streams, nb_output_streams, &pkt) < 0) {
2674
2675             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2676                    ist->file_index, ist->st->index);
2677             if (exit_on_error)
2678                 exit_program(1);
2679             av_free_packet(&pkt);
2680             continue;
2681         }
2682
2683     discard_packet:
2684         av_free_packet(&pkt);
2685
2686         /* dump report by using the output first video and audio streams */
2687         print_report(output_files, output_streams, nb_output_streams, 0, timer_start);
2688     }
2689
2690     /* at the end of stream, we must flush the decoder buffers */
2691     for (i = 0; i < nb_input_streams; i++) {
2692         ist = &input_streams[i];
2693         if (ist->decoding_needed) {
2694             output_packet(ist, output_streams, nb_output_streams, NULL);
2695         }
2696     }
2697     flush_encoders(output_streams, nb_output_streams);
2698
2699     term_exit();
2700
2701     /* write the trailer if needed and close file */
2702     for(i=0;i<nb_output_files;i++) {
2703         os = output_files[i].ctx;
2704         av_write_trailer(os);
2705     }
2706
2707     /* dump report by using the first video and audio streams */
2708     print_report(output_files, output_streams, nb_output_streams, 1, timer_start);
2709
2710     /* close each encoder */
2711     for (i = 0; i < nb_output_streams; i++) {
2712         ost = &output_streams[i];
2713         if (ost->encoding_needed) {
2714             av_freep(&ost->st->codec->stats_in);
2715             avcodec_close(ost->st->codec);
2716         }
2717 #if CONFIG_AVFILTER
2718         avfilter_graph_free(&ost->graph);
2719 #endif
2720     }
2721
2722     /* close each decoder */
2723     for (i = 0; i < nb_input_streams; i++) {
2724         ist = &input_streams[i];
2725         if (ist->decoding_needed) {
2726             avcodec_close(ist->st->codec);
2727         }
2728     }
2729
2730     /* finished ! */
2731     ret = 0;
2732
2733  fail:
2734     av_freep(&bit_buffer);
2735     av_freep(&no_packet);
2736
2737     if (output_streams) {
2738         for (i = 0; i < nb_output_streams; i++) {
2739             ost = &output_streams[i];
2740             if (ost) {
2741                 if (ost->stream_copy)
2742                     av_freep(&ost->st->codec->extradata);
2743                 if (ost->logfile) {
2744                     fclose(ost->logfile);
2745                     ost->logfile = NULL;
2746                 }
2747                 av_fifo_free(ost->fifo); /* works even if fifo is not
2748                                              initialized but set to zero */
2749                 av_freep(&ost->st->codec->subtitle_header);
2750                 av_free(ost->pict_tmp.data[0]);
2751                 av_free(ost->forced_kf_pts);
2752                 if (ost->video_resample)
2753                     sws_freeContext(ost->img_resample_ctx);
2754                 if (ost->resample)
2755                     audio_resample_close(ost->resample);
2756                 if (ost->reformat_ctx)
2757                     av_audio_convert_free(ost->reformat_ctx);
2758                 av_dict_free(&ost->opts);
2759             }
2760         }
2761     }
2762     return ret;
2763 }
2764
2765 static double parse_frame_aspect_ratio(const char *arg)
2766 {
2767     int x = 0, y = 0;
2768     double ar = 0;
2769     const char *p;
2770     char *end;
2771
2772     p = strchr(arg, ':');
2773     if (p) {
2774         x = strtol(arg, &end, 10);
2775         if (end == p)
2776             y = strtol(end+1, &end, 10);
2777         if (x > 0 && y > 0)
2778             ar = (double)x / (double)y;
2779     } else
2780         ar = strtod(arg, NULL);
2781
2782     if (!ar) {
2783         av_log(NULL, AV_LOG_FATAL, "Incorrect aspect ratio specification.\n");
2784         exit_program(1);
2785     }
2786     return ar;
2787 }
2788
2789 static int opt_audio_codec(OptionsContext *o, const char *opt, const char *arg)
2790 {
2791     return parse_option(o, "codec:a", arg, options);
2792 }
2793
2794 static int opt_video_codec(OptionsContext *o, const char *opt, const char *arg)
2795 {
2796     return parse_option(o, "codec:v", arg, options);
2797 }
2798
2799 static int opt_subtitle_codec(OptionsContext *o, const char *opt, const char *arg)
2800 {
2801     return parse_option(o, "codec:s", arg, options);
2802 }
2803
2804 static int opt_data_codec(OptionsContext *o, const char *opt, const char *arg)
2805 {
2806     return parse_option(o, "codec:d", arg, options);
2807 }
2808
2809 static int opt_map(OptionsContext *o, const char *opt, const char *arg)
2810 {
2811     StreamMap *m = NULL;
2812     int i, negative = 0, file_idx;
2813     int sync_file_idx = -1, sync_stream_idx;
2814     char *p, *sync;
2815     char *map;
2816
2817     if (*arg == '-') {
2818         negative = 1;
2819         arg++;
2820     }
2821     map = av_strdup(arg);
2822
2823     /* parse sync stream first, just pick first matching stream */
2824     if (sync = strchr(map, ',')) {
2825         *sync = 0;
2826         sync_file_idx = strtol(sync + 1, &sync, 0);
2827         if (sync_file_idx >= nb_input_files || sync_file_idx < 0) {
2828             av_log(NULL, AV_LOG_FATAL, "Invalid sync file index: %d.\n", sync_file_idx);
2829             exit_program(1);
2830         }
2831         if (*sync)
2832             sync++;
2833         for (i = 0; i < input_files[sync_file_idx].nb_streams; i++)
2834             if (check_stream_specifier(input_files[sync_file_idx].ctx,
2835                                        input_files[sync_file_idx].ctx->streams[i], sync) == 1) {
2836                 sync_stream_idx = i;
2837                 break;
2838             }
2839         if (i == input_files[sync_file_idx].nb_streams) {
2840             av_log(NULL, AV_LOG_FATAL, "Sync stream specification in map %s does not "
2841                                        "match any streams.\n", arg);
2842             exit_program(1);
2843         }
2844     }
2845
2846
2847     file_idx = strtol(map, &p, 0);
2848     if (file_idx >= nb_input_files || file_idx < 0) {
2849         av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
2850         exit_program(1);
2851     }
2852     if (negative)
2853         /* disable some already defined maps */
2854         for (i = 0; i < o->nb_stream_maps; i++) {
2855             m = &o->stream_maps[i];
2856             if (file_idx == m->file_index &&
2857                 check_stream_specifier(input_files[m->file_index].ctx,
2858                                        input_files[m->file_index].ctx->streams[m->stream_index],
2859                                        *p == ':' ? p + 1 : p) > 0)
2860                 m->disabled = 1;
2861         }
2862     else
2863         for (i = 0; i < input_files[file_idx].nb_streams; i++) {
2864             if (check_stream_specifier(input_files[file_idx].ctx, input_files[file_idx].ctx->streams[i],
2865                         *p == ':' ? p + 1 : p) <= 0)
2866                 continue;
2867             o->stream_maps = grow_array(o->stream_maps, sizeof(*o->stream_maps),
2868                                         &o->nb_stream_maps, o->nb_stream_maps + 1);
2869             m = &o->stream_maps[o->nb_stream_maps - 1];
2870
2871             m->file_index   = file_idx;
2872             m->stream_index = i;
2873
2874             if (sync_file_idx >= 0) {
2875                 m->sync_file_index   = sync_file_idx;
2876                 m->sync_stream_index = sync_stream_idx;
2877             } else {
2878                 m->sync_file_index   = file_idx;
2879                 m->sync_stream_index = i;
2880             }
2881         }
2882
2883     if (!m) {
2884         av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
2885         exit_program(1);
2886     }
2887
2888     av_freep(&map);
2889     return 0;
2890 }
2891
2892 static int opt_attach(OptionsContext *o, const char *opt, const char *arg)
2893 {
2894     o->attachments = grow_array(o->attachments, sizeof(*o->attachments),
2895                                 &o->nb_attachments, o->nb_attachments + 1);
2896     o->attachments[o->nb_attachments - 1] = arg;
2897     return 0;
2898 }
2899
2900 /**
2901  * Parse a metadata specifier in arg.
2902  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
2903  * @param index for type c/p, chapter/program index is written here
2904  * @param stream_spec for type s, the stream specifier is written here
2905  */
2906 static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
2907 {
2908     if (*arg) {
2909         *type = *arg;
2910         switch (*arg) {
2911         case 'g':
2912             break;
2913         case 's':
2914             if (*(++arg) && *arg != ':') {
2915                 av_log(NULL, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
2916                 exit_program(1);
2917             }
2918             *stream_spec = *arg == ':' ? arg + 1 : "";
2919             break;
2920         case 'c':
2921         case 'p':
2922             if (*(++arg) == ':')
2923                 *index = strtol(++arg, NULL, 0);
2924             break;
2925         default:
2926             av_log(NULL, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
2927             exit_program(1);
2928         }
2929     } else
2930         *type = 'g';
2931 }
2932
2933 static int copy_metadata(char *outspec, char *inspec, AVFormatContext *oc, AVFormatContext *ic, OptionsContext *o)
2934 {
2935     AVDictionary **meta_in = NULL;
2936     AVDictionary **meta_out;
2937     int i, ret = 0;
2938     char type_in, type_out;
2939     const char *istream_spec = NULL, *ostream_spec = NULL;
2940     int idx_in = 0, idx_out = 0;
2941
2942     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
2943     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
2944
2945     if (type_in == 'g' || type_out == 'g')
2946         o->metadata_global_manual = 1;
2947     if (type_in == 's' || type_out == 's')
2948         o->metadata_streams_manual = 1;
2949     if (type_in == 'c' || type_out == 'c')
2950         o->metadata_chapters_manual = 1;
2951
2952 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
2953     if ((index) < 0 || (index) >= (nb_elems)) {\
2954         av_log(NULL, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
2955                 (desc), (index));\
2956         exit_program(1);\
2957     }
2958
2959 #define SET_DICT(type, meta, context, index)\
2960         switch (type) {\
2961         case 'g':\
2962             meta = &context->metadata;\
2963             break;\
2964         case 'c':\
2965             METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
2966             meta = &context->chapters[index]->metadata;\
2967             break;\
2968         case 'p':\
2969             METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
2970             meta = &context->programs[index]->metadata;\
2971             break;\
2972         }\
2973
2974     SET_DICT(type_in, meta_in, ic, idx_in);
2975     SET_DICT(type_out, meta_out, oc, idx_out);
2976
2977     /* for input streams choose first matching stream */
2978     if (type_in == 's') {
2979         for (i = 0; i < ic->nb_streams; i++) {
2980             if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
2981                 meta_in = &ic->streams[i]->metadata;
2982                 break;
2983             } else if (ret < 0)
2984                 exit_program(1);
2985         }
2986         if (!meta_in) {
2987             av_log(NULL, AV_LOG_FATAL, "Stream specifier %s does not match  any streams.\n", istream_spec);
2988             exit_program(1);
2989         }
2990     }
2991
2992     if (type_out == 's') {
2993         for (i = 0; i < oc->nb_streams; i++) {
2994             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
2995                 meta_out = &oc->streams[i]->metadata;
2996                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
2997             } else if (ret < 0)
2998                 exit_program(1);
2999         }
3000     } else
3001         av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
3002
3003     return 0;
3004 }
3005
3006 static AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, int encoder)
3007 {
3008     const char *codec_string = encoder ? "encoder" : "decoder";
3009     AVCodec *codec;
3010
3011     codec = encoder ?
3012         avcodec_find_encoder_by_name(name) :
3013         avcodec_find_decoder_by_name(name);
3014     if(!codec) {
3015         av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name);
3016         exit_program(1);
3017     }
3018     if(codec->type != type) {
3019         av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name);
3020         exit_program(1);
3021     }
3022     return codec;
3023 }
3024
3025 static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *st)
3026 {
3027     char *codec_name = NULL;
3028
3029     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, st);
3030     if (codec_name) {
3031         AVCodec *codec = find_codec_or_die(codec_name, st->codec->codec_type, 0);
3032         st->codec->codec_id = codec->id;
3033         return codec;
3034     } else
3035         return avcodec_find_decoder(st->codec->codec_id);
3036 }
3037
3038 /**
3039  * Add all the streams from the given input file to the global
3040  * list of input streams.
3041  */
3042 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
3043 {
3044     int i, rfps, rfps_base;
3045
3046     for (i = 0; i < ic->nb_streams; i++) {
3047         AVStream *st = ic->streams[i];
3048         AVCodecContext *dec = st->codec;
3049         InputStream *ist;
3050
3051         input_streams = grow_array(input_streams, sizeof(*input_streams), &nb_input_streams, nb_input_streams + 1);
3052         ist = &input_streams[nb_input_streams - 1];
3053         ist->st = st;
3054         ist->file_index = nb_input_files;
3055         ist->discard = 1;
3056         ist->opts = filter_codec_opts(codec_opts, ist->st->codec->codec_id, ic, st);
3057
3058         ist->ts_scale = 1.0;
3059         MATCH_PER_STREAM_OPT(ts_scale, dbl, ist->ts_scale, ic, st);
3060
3061         ist->dec = choose_decoder(o, ic, st);
3062
3063         switch (dec->codec_type) {
3064         case AVMEDIA_TYPE_AUDIO:
3065             if (o->audio_disable)
3066                 st->discard= AVDISCARD_ALL;
3067             break;
3068         case AVMEDIA_TYPE_VIDEO:
3069             rfps      = ic->streams[i]->r_frame_rate.num;
3070             rfps_base = ic->streams[i]->r_frame_rate.den;
3071             if (dec->lowres) {
3072                 dec->flags |= CODEC_FLAG_EMU_EDGE;
3073                 dec->height >>= dec->lowres;
3074                 dec->width  >>= dec->lowres;
3075             }
3076
3077             if (dec->time_base.den != rfps*dec->ticks_per_frame || dec->time_base.num != rfps_base) {
3078
3079                 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",
3080                        i, (float)dec->time_base.den / dec->time_base.num, dec->time_base.den, dec->time_base.num,
3081                        (float)rfps / rfps_base, rfps, rfps_base);
3082             }
3083
3084             if (o->video_disable)
3085                 st->discard= AVDISCARD_ALL;
3086             else if(video_discard)
3087                 st->discard= video_discard;
3088             break;
3089         case AVMEDIA_TYPE_DATA:
3090             break;
3091         case AVMEDIA_TYPE_SUBTITLE:
3092             if (o->subtitle_disable)
3093                 st->discard = AVDISCARD_ALL;
3094             break;
3095         case AVMEDIA_TYPE_ATTACHMENT:
3096         case AVMEDIA_TYPE_UNKNOWN:
3097             break;
3098         default:
3099             abort();
3100         }
3101     }
3102 }
3103
3104 static void assert_file_overwrite(const char *filename)
3105 {
3106     if (!file_overwrite &&
3107         (strchr(filename, ':') == NULL || filename[1] == ':' ||
3108          av_strstart(filename, "file:", NULL))) {
3109         if (avio_check(filename, 0) == 0) {
3110             if (!using_stdin) {
3111                 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3112                 fflush(stderr);
3113                 if (!read_yesno()) {
3114                     fprintf(stderr, "Not overwriting - exiting\n");
3115                     exit_program(1);
3116                 }
3117             }
3118             else {
3119                 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3120                 exit_program(1);
3121             }
3122         }
3123     }
3124 }
3125
3126 static void dump_attachment(AVStream *st, const char *filename)
3127 {
3128     int ret;
3129     AVIOContext *out = NULL;
3130     AVDictionaryEntry *e;
3131
3132     if (!st->codec->extradata_size) {
3133         av_log(NULL, AV_LOG_WARNING, "No extradata to dump in stream #%d:%d.\n",
3134                nb_input_files - 1, st->index);
3135         return;
3136     }
3137     if (!*filename && (e = av_dict_get(st->metadata, "filename", NULL, 0)))
3138         filename = e->value;
3139     if (!*filename) {
3140         av_log(NULL, AV_LOG_FATAL, "No filename specified and no 'filename' tag"
3141                "in stream #%d:%d.\n", nb_input_files - 1, st->index);
3142         exit_program(1);
3143     }
3144
3145     assert_file_overwrite(filename);
3146
3147     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, &int_cb, NULL)) < 0) {
3148         av_log(NULL, AV_LOG_FATAL, "Could not open file %s for writing.\n",
3149                filename);
3150         exit_program(1);
3151     }
3152
3153     avio_write(out, st->codec->extradata, st->codec->extradata_size);
3154     avio_flush(out);
3155     avio_close(out);
3156 }
3157
3158 static int opt_input_file(OptionsContext *o, const char *opt, const char *filename)
3159 {
3160     AVFormatContext *ic;
3161     AVInputFormat *file_iformat = NULL;
3162     int err, i, ret;
3163     int64_t timestamp;
3164     uint8_t buf[128];
3165     AVDictionary **opts;
3166     int orig_nb_streams;                     // number of streams before avformat_find_stream_info
3167
3168     if (o->format) {
3169         if (!(file_iformat = av_find_input_format(o->format))) {
3170             av_log(NULL, AV_LOG_FATAL, "Unknown input format: '%s'\n", o->format);
3171             exit_program(1);
3172         }
3173     }
3174
3175     if (!strcmp(filename, "-"))
3176         filename = "pipe:";
3177
3178     using_stdin |= !strncmp(filename, "pipe:", 5) ||
3179                     !strcmp(filename, "/dev/stdin");
3180
3181     /* get default parameters from command line */
3182     ic = avformat_alloc_context();
3183     if (!ic) {
3184         print_error(filename, AVERROR(ENOMEM));
3185         exit_program(1);
3186     }
3187     if (o->nb_audio_sample_rate) {
3188         snprintf(buf, sizeof(buf), "%d", o->audio_sample_rate[o->nb_audio_sample_rate - 1].u.i);
3189         av_dict_set(&format_opts, "sample_rate", buf, 0);
3190     }
3191     if (o->nb_audio_channels) {
3192         snprintf(buf, sizeof(buf), "%d", o->audio_channels[o->nb_audio_channels - 1].u.i);
3193         av_dict_set(&format_opts, "channels", buf, 0);
3194     }
3195     if (o->nb_frame_rates) {
3196         av_dict_set(&format_opts, "framerate", o->frame_rates[o->nb_frame_rates - 1].u.str, 0);
3197     }
3198     if (o->nb_frame_sizes) {
3199         av_dict_set(&format_opts, "video_size", o->frame_sizes[o->nb_frame_sizes - 1].u.str, 0);
3200     }
3201     if (o->nb_frame_pix_fmts)
3202         av_dict_set(&format_opts, "pixel_format", o->frame_pix_fmts[o->nb_frame_pix_fmts - 1].u.str, 0);
3203
3204     ic->flags |= AVFMT_FLAG_NONBLOCK;
3205     ic->interrupt_callback = int_cb;
3206
3207     /* open the input file with generic libav function */
3208     err = avformat_open_input(&ic, filename, file_iformat, &format_opts);
3209     if (err < 0) {
3210         print_error(filename, err);
3211         exit_program(1);
3212     }
3213     assert_avoptions(format_opts);
3214
3215     /* apply forced codec ids */
3216     for (i = 0; i < ic->nb_streams; i++)
3217         choose_decoder(o, ic, ic->streams[i]);
3218
3219     /* Set AVCodecContext options for avformat_find_stream_info */
3220     opts = setup_find_stream_info_opts(ic, codec_opts);
3221     orig_nb_streams = ic->nb_streams;
3222
3223     /* If not enough info to get the stream parameters, we decode the
3224        first frames to get it. (used in mpeg case for example) */
3225     ret = avformat_find_stream_info(ic, opts);
3226     if (ret < 0) {
3227         av_log(NULL, AV_LOG_FATAL, "%s: could not find codec parameters\n", filename);
3228         avformat_close_input(&ic);
3229         exit_program(1);
3230     }
3231
3232     timestamp = o->start_time;
3233     /* add the stream start time */
3234     if (ic->start_time != AV_NOPTS_VALUE)
3235         timestamp += ic->start_time;
3236
3237     /* if seeking requested, we execute it */
3238     if (o->start_time != 0) {
3239         ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3240         if (ret < 0) {
3241             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
3242                    filename, (double)timestamp / AV_TIME_BASE);
3243         }
3244     }
3245
3246     /* update the current parameters so that they match the one of the input stream */
3247     add_input_streams(o, ic);
3248
3249     /* dump the file content */
3250     av_dump_format(ic, nb_input_files, filename, 0);
3251
3252     input_files = grow_array(input_files, sizeof(*input_files), &nb_input_files, nb_input_files + 1);
3253     input_files[nb_input_files - 1].ctx        = ic;
3254     input_files[nb_input_files - 1].ist_index  = nb_input_streams - ic->nb_streams;
3255     input_files[nb_input_files - 1].ts_offset  = o->input_ts_offset - (copy_ts ? 0 : timestamp);
3256     input_files[nb_input_files - 1].nb_streams = ic->nb_streams;
3257     input_files[nb_input_files - 1].rate_emu   = o->rate_emu;
3258
3259     for (i = 0; i < o->nb_dump_attachment; i++) {
3260         int j;
3261
3262         for (j = 0; j < ic->nb_streams; j++) {
3263             AVStream *st = ic->streams[j];
3264
3265             if (check_stream_specifier(ic, st, o->dump_attachment[i].specifier) == 1)
3266                 dump_attachment(st, o->dump_attachment[i].u.str);
3267         }
3268     }
3269
3270     for (i = 0; i < orig_nb_streams; i++)
3271         av_dict_free(&opts[i]);
3272     av_freep(&opts);
3273
3274     reset_options(o);
3275     return 0;
3276 }
3277
3278 static void parse_forced_key_frames(char *kf, OutputStream *ost,
3279                                     AVCodecContext *avctx)
3280 {
3281     char *p;
3282     int n = 1, i;
3283     int64_t t;
3284
3285     for (p = kf; *p; p++)
3286         if (*p == ',')
3287             n++;
3288     ost->forced_kf_count = n;
3289     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
3290     if (!ost->forced_kf_pts) {
3291         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
3292         exit_program(1);
3293     }
3294     for (i = 0; i < n; i++) {
3295         p = i ? strchr(p, ',') + 1 : kf;
3296         t = parse_time_or_die("force_key_frames", p, 1);
3297         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
3298     }
3299 }
3300
3301 static uint8_t *get_line(AVIOContext *s)
3302 {
3303     AVIOContext *line;
3304     uint8_t *buf;
3305     char c;
3306
3307     if (avio_open_dyn_buf(&line) < 0) {
3308         av_log(NULL, AV_LOG_FATAL, "Could not alloc buffer for reading preset.\n");
3309         exit_program(1);
3310     }
3311
3312     while ((c = avio_r8(s)) && c != '\n')
3313         avio_w8(line, c);
3314     avio_w8(line, 0);
3315     avio_close_dyn_buf(line, &buf);
3316
3317     return buf;
3318 }
3319
3320 static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
3321 {
3322     int i, ret = 1;
3323     char filename[1000];
3324     const char *base[3] = { getenv("AVCONV_DATADIR"),
3325                             getenv("HOME"),
3326                             AVCONV_DATADIR,
3327                             };
3328
3329     for (i = 0; i < FF_ARRAY_ELEMS(base) && ret; i++) {
3330         if (!base[i])
3331             continue;
3332         if (codec_name) {
3333             snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
3334                      i != 1 ? "" : "/.avconv", codec_name, preset_name);
3335             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3336         }
3337         if (ret) {
3338             snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
3339                      i != 1 ? "" : "/.avconv", preset_name);
3340             ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
3341         }
3342     }
3343     return ret;
3344 }
3345
3346 static void choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *ost)
3347 {
3348     char *codec_name = NULL;
3349
3350     MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
3351     if (!codec_name) {
3352         ost->st->codec->codec_id = av_guess_codec(s->oformat, NULL, s->filename,
3353                                                   NULL, ost->st->codec->codec_type);
3354         ost->enc = avcodec_find_encoder(ost->st->codec->codec_id);
3355     } else if (!strcmp(codec_name, "copy"))
3356         ost->stream_copy = 1;
3357     else {
3358         ost->enc = find_codec_or_die(codec_name, ost->st->codec->codec_type, 1);
3359         ost->st->codec->codec_id = ost->enc->id;
3360     }
3361 }
3362
3363 static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
3364 {
3365     OutputStream *ost;
3366     AVStream *st = avformat_new_stream(oc, NULL);
3367     int idx      = oc->nb_streams - 1, ret = 0;
3368     char *bsf = NULL, *next, *codec_tag = NULL;
3369     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
3370     double qscale = -1;
3371     char *buf = NULL, *arg = NULL, *preset = NULL;
3372     AVIOContext *s = NULL;
3373
3374     if (!st) {
3375         av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n");
3376         exit_program(1);
3377     }
3378
3379     if (oc->nb_streams - 1 < o->nb_streamid_map)
3380         st->id = o->streamid_map[oc->nb_streams - 1];
3381
3382     output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams,
3383                                 nb_output_streams + 1);
3384     ost = &output_streams[nb_output_streams - 1];
3385     ost->file_index = nb_output_files;
3386     ost->index = idx;
3387     ost->st    = st;
3388     st->codec->codec_type = type;
3389     choose_encoder(o, oc, ost);
3390     if (ost->enc) {
3391         ost->opts  = filter_codec_opts(codec_opts, ost->enc->id, oc, st);
3392     }
3393
3394     avcodec_get_context_defaults3(st->codec, ost->enc);
3395     st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy
3396
3397     MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
3398     if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) {
3399         do  {
3400             buf = get_line(s);
3401             if (!buf[0] || buf[0] == '#') {
3402                 av_free(buf);
3403                 continue;
3404             }
3405             if (!(arg = strchr(buf, '='))) {
3406                 av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
3407                 exit_program(1);
3408             }
3409             *arg++ = 0;
3410             av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE);
3411             av_free(buf);
3412         } while (!s->eof_reached);
3413         avio_close(s);
3414     }
3415     if (ret) {
3416         av_log(NULL, AV_LOG_FATAL,
3417                "Preset %s specified for stream %d:%d, but could not be opened.\n",
3418                preset, ost->file_index, ost->index);
3419         exit_program(1);
3420     }
3421
3422     ost->max_frames = INT64_MAX;
3423     MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st);
3424
3425     MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st);
3426     while (bsf) {
3427         if (next = strchr(bsf, ','))
3428             *next++ = 0;
3429         if (!(bsfc = av_bitstream_filter_init(bsf))) {
3430             av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf);
3431             exit_program(1);
3432         }
3433         if (bsfc_prev)
3434             bsfc_prev->next = bsfc;
3435         else
3436             ost->bitstream_filters = bsfc;
3437
3438         bsfc_prev = bsfc;
3439         bsf       = next;
3440     }
3441
3442     MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
3443     if (codec_tag) {
3444         uint32_t tag = strtol(codec_tag, &next, 0);
3445         if (*next)
3446             tag = AV_RL32(codec_tag);
3447         st->codec->codec_tag = tag;
3448     }
3449
3450     MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
3451     if (qscale >= 0 || same_quant) {
3452         st->codec->flags |= CODEC_FLAG_QSCALE;
3453         st->codec->global_quality = FF_QP2LAMBDA * qscale;
3454     }
3455
3456     if (oc->oformat->flags & AVFMT_GLOBALHEADER)
3457         st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
3458
3459     av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags);
3460     return ost;
3461 }
3462
3463 static void parse_matrix_coeffs(uint16_t *dest, const char *str)
3464 {
3465     int i;
3466     const char *p = str;
3467     for(i = 0;; i++) {
3468         dest[i] = atoi(p);
3469         if(i == 63)
3470             break;
3471         p = strchr(p, ',');
3472         if(!p) {
3473             av_log(NULL, AV_LOG_FATAL, "Syntax error in matrix \"%s\" at coeff %d\n", str, i);
3474             exit_program(1);
3475         }
3476         p++;
3477     }
3478 }
3479
3480 static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
3481 {
3482     AVStream *st;
3483     OutputStream *ost;
3484     AVCodecContext *video_enc;
3485
3486     ost = new_output_stream(o, oc, AVMEDIA_TYPE_VIDEO);
3487     st  = ost->st;
3488     video_enc = st->codec;
3489
3490     if (!ost->stream_copy) {
3491         const char *p = NULL;
3492         char *forced_key_frames = NULL, *frame_rate = NULL, *frame_size = NULL;
3493         char *frame_aspect_ratio = NULL, *frame_pix_fmt = NULL;
3494         char *intra_matrix = NULL, *inter_matrix = NULL, *filters = NULL;
3495         int i;
3496
3497         MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
3498         if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
3499             av_log(NULL, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
3500             exit_program(1);
3501         }
3502
3503         MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
3504         if (frame_size && av_parse_video_size(&video_enc->width, &video_enc->height, frame_size) < 0) {
3505             av_log(NULL, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
3506             exit_program(1);
3507         }
3508
3509         MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
3510         if (frame_aspect_ratio)
3511             ost->frame_aspect_ratio = parse_frame_aspect_ratio(frame_aspect_ratio);
3512
3513         MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
3514         if (frame_pix_fmt && (video_enc->pix_fmt = av_get_pix_fmt(frame_pix_fmt)) == PIX_FMT_NONE) {
3515             av_log(NULL, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", frame_pix_fmt);
3516             exit_program(1);
3517         }
3518         st->sample_aspect_ratio = video_enc->sample_aspect_ratio;
3519
3520         MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
3521         if (intra_matrix) {
3522             if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64))) {
3523                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for intra matrix.\n");
3524                 exit_program(1);
3525             }
3526             parse_matrix_coeffs(video_enc->intra_matrix, intra_matrix);
3527         }
3528         MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
3529         if (inter_matrix) {
3530             if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64))) {
3531                 av_log(NULL, AV_LOG_FATAL, "Could not allocate memory for inter matrix.\n");
3532                 exit_program(1);
3533             }
3534             parse_matrix_coeffs(video_enc->inter_matrix, inter_matrix);
3535         }
3536
3537         MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
3538         for(i=0; p; i++){
3539             int start, end, q;
3540             int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3541             if(e!=3){
3542                 av_log(NULL, AV_LOG_FATAL, "error parsing rc_override\n");
3543                 exit_program(1);
3544             }
3545             video_enc->rc_override=
3546                 av_realloc(video_enc->rc_override,
3547                            sizeof(RcOverride)*(i+1));
3548             video_enc->rc_override[i].start_frame= start;
3549             video_enc->rc_override[i].end_frame  = end;
3550             if(q>0){
3551                 video_enc->rc_override[i].qscale= q;
3552                 video_enc->rc_override[i].quality_factor= 1.0;
3553             }
3554             else{
3555                 video_enc->rc_override[i].qscale= 0;
3556                 video_enc->rc_override[i].quality_factor= -q/100.0;
3557             }
3558             p= strchr(p, '/');
3559             if(p) p++;
3560         }
3561         video_enc->rc_override_count=i;
3562         if (!video_enc->rc_initial_buffer_occupancy)
3563             video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
3564         video_enc->intra_dc_precision= intra_dc_precision - 8;
3565
3566         /* two pass mode */
3567         if (do_pass) {
3568             if (do_pass == 1) {
3569                 video_enc->flags |= CODEC_FLAG_PASS1;
3570             } else {
3571                 video_enc->flags |= CODEC_FLAG_PASS2;
3572             }
3573         }
3574
3575         MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_key_frames, oc, st);
3576         if (forced_key_frames)
3577             parse_forced_key_frames(forced_key_frames, ost, video_enc);
3578
3579         MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
3580
3581         ost->top_field_first = -1;
3582         MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
3583
3584         MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i, ost->copy_initial_nonkeyframes, oc ,st);
3585
3586 #if CONFIG_AVFILTER
3587         MATCH_PER_STREAM_OPT(filters, str, filters, oc, st);
3588         if (filters)
3589             ost->avfilter = av_strdup(filters);
3590 #endif
3591     }
3592
3593     return ost;
3594 }
3595
3596 static OutputStream *new_audio_stream(OptionsContext *o, AVFormatContext *oc)
3597 {
3598     AVStream *st;
3599     OutputStream *ost;
3600     AVCodecContext *audio_enc;
3601
3602     ost = new_output_stream(o, oc, AVMEDIA_TYPE_AUDIO);
3603     st  = ost->st;
3604
3605     audio_enc = st->codec;
3606     audio_enc->codec_type = AVMEDIA_TYPE_AUDIO;
3607
3608     if (!ost->stream_copy) {
3609         char *sample_fmt = NULL;
3610
3611         MATCH_PER_STREAM_OPT(audio_channels, i, audio_enc->channels, oc, st);
3612
3613         MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
3614         if (sample_fmt &&
3615             (audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
3616             av_log(NULL, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
3617             exit_program(1);
3618         }
3619
3620         MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
3621     }
3622
3623     return ost;
3624 }
3625
3626 static OutputStream *new_data_stream(OptionsContext *o, AVFormatContext *oc)
3627 {
3628     OutputStream *ost;
3629
3630     ost = new_output_stream(o, oc, AVMEDIA_TYPE_DATA);
3631     if (!ost->stream_copy) {
3632         av_log(NULL, AV_LOG_FATAL, "Data stream encoding not supported yet (only streamcopy)\n");
3633         exit_program(1);
3634     }
3635
3636     return ost;
3637 }
3638
3639 static OutputStream *new_attachment_stream(OptionsContext *o, AVFormatContext *oc)
3640 {
3641     OutputStream *ost = new_output_stream(o, oc, AVMEDIA_TYPE_ATTACHMENT);
3642     ost->stream_copy = 1;
3643     return ost;
3644 }
3645
3646 static OutputStream *new_subtitle_stream(OptionsContext *o, AVFormatContext *oc)
3647 {
3648     AVStream *st;
3649     OutputStream *ost;
3650     AVCodecContext *subtitle_enc;
3651
3652     ost = new_output_stream(o, oc, AVMEDIA_TYPE_SUBTITLE);
3653     st  = ost->st;
3654     subtitle_enc = st->codec;
3655
3656     subtitle_enc->codec_type = AVMEDIA_TYPE_SUBTITLE;
3657
3658     return ost;
3659 }
3660
3661 /* arg format is "output-stream-index:streamid-value". */
3662 static int opt_streamid(OptionsContext *o, const char *opt, const char *arg)
3663 {
3664     int idx;
3665     char *p;
3666     char idx_str[16];
3667
3668     av_strlcpy(idx_str, arg, sizeof(idx_str));
3669     p = strchr(idx_str, ':');
3670     if (!p) {
3671         av_log(NULL, AV_LOG_FATAL,
3672                "Invalid value '%s' for option '%s', required syntax is 'index:value'\n",
3673                arg, opt);
3674         exit_program(1);
3675     }
3676     *p++ = '\0';
3677     idx = parse_number_or_die(opt, idx_str, OPT_INT, 0, INT_MAX);
3678     o->streamid_map = grow_array(o->streamid_map, sizeof(*o->streamid_map), &o->nb_streamid_map, idx+1);
3679     o->streamid_map[idx] = parse_number_or_die(opt, p, OPT_INT, 0, INT_MAX);
3680     return 0;
3681 }
3682
3683 static int copy_chapters(InputFile *ifile, OutputFile *ofile, int copy_metadata)
3684 {
3685     AVFormatContext *is = ifile->ctx;
3686     AVFormatContext *os = ofile->ctx;
3687     int i;
3688
3689     for (i = 0; i < is->nb_chapters; i++) {
3690         AVChapter *in_ch = is->chapters[i], *out_ch;
3691         int64_t ts_off   = av_rescale_q(ofile->start_time - ifile->ts_offset,
3692                                       AV_TIME_BASE_Q, in_ch->time_base);
3693         int64_t rt       = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
3694                            av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
3695
3696
3697         if (in_ch->end < ts_off)
3698             continue;
3699         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
3700             break;
3701
3702         out_ch = av_mallocz(sizeof(AVChapter));
3703         if (!out_ch)
3704             return AVERROR(ENOMEM);
3705
3706         out_ch->id        = in_ch->id;
3707         out_ch->time_base = in_ch->time_base;
3708         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
3709         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
3710
3711         if (copy_metadata)
3712             av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
3713
3714    &n