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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
22 #include "config.h"
24 #include <stdint.h>
25 #include <stdio.h>
26 #include <signal.h>
28 #include "cmdutils.h"
30 #include "libavformat/avformat.h"
31 #include "libavformat/avio.h"
33 #include "libavcodec/avcodec.h"
35 #include "libavfilter/avfilter.h"
37 #include "libavutil/avutil.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/eval.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/hwcontext.h"
42 #include "libavutil/pixfmt.h"
43 #include "libavutil/rational.h"
44 #include "libavutil/thread.h"
49 #define VSYNC_AUTO -1
51 #define VSYNC_CFR 1
52 #define VSYNC_VFR 2
53 #define VSYNC_VSCFR 0xfe
54 #define VSYNC_DROP 0xff
56 #define MAX_STREAMS 1024 /* arbitrary sanity check value */
58 enum HWAccelID {
64 };
66 typedef struct HWAccel {
67  const char *name;
69  enum HWAccelID id;
71 } HWAccel;
73 typedef struct HWDevice {
74  const char *name;
77 } HWDevice;
79 /* select an input stream for an output stream */
80 typedef struct StreamMap {
81  int disabled; /* 1 is this mapping is disabled by a negative map */
86  char *linklabel; /* name of an output link, for mapping lavfi outputs */
87 } StreamMap;
89 typedef struct {
90  int file_idx, stream_idx, channel_idx; // input
91  int ofile_idx, ostream_idx; // output
94 typedef struct OptionsContext {
97  /* input/output options */
98  int64_t start_time;
99  int64_t start_time_eof;
101  const char *format;
118  /* input options */
120  int loop;
121  int rate_emu;
138  /* output options */
141  AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
142  int nb_audio_channel_maps; /* number of (valid) -map_channel settings */
146  const char **attachments;
151  int64_t recording_time;
152  int64_t stop_time;
153  uint64_t limit_filesize;
154  float mux_preload;
156  int shortest;
157  int bitexact;
164  /* indexed by output file stream index */
215  int nb_pass;
225  int nb_apad;
240 typedef struct InputFilter {
242  struct InputStream *ist;
245  enum AVMediaType type; // AVMEDIA_TYPE_SUBTITLE for sub2video
249  // parameters configured for this input
250  int format;
252  int width, height;
256  int channels;
257  uint64_t channel_layout;
261  int eof;
262 } InputFilter;
264 typedef struct OutputFilter {
266  struct OutputStream *ost;
270  /* temporary storage until stream maps are processed */
274  /* desired output stream properties */
275  int width, height;
277  int format;
279  uint64_t channel_layout;
281  // those are only set if no format is specified and the encoder gives us multiple options
282  int *formats;
283  uint64_t *channel_layouts;
285 } OutputFilter;
287 typedef struct FilterGraph {
288  int index;
289  const char *graph_desc;
298 } FilterGraph;
300 typedef struct InputStream {
303  int discard; /* true if stream data should be discarded */
305  int decoding_needed; /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */
306 #define DECODING_FOR_OST 1
310  const AVCodec *dec;
312  AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
315  int64_t start; /* time when read started */
316  /* predicted dts of the next packet read for this stream or (when there are
317  * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */
318  int64_t next_dts;
319  int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
321  int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
322  int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units)
327  int64_t min_pts; /* pts with the smallest value in a current stream */
328  int64_t max_pts; /* pts with the higher value in a current stream */
330  // when forcing constant input framerate through -r,
331  // this contains the pts that will be given to the next decoded frame
332  int64_t cfr_next_pts;
334  int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */
336  double ts_scale;
339  AVRational framerate; /* framerate forced with -r */
346  struct { /* previous decoded subtitle and related variables */
348  int ret;
350  } prev_sub;
352  struct sub2video {
353  int64_t last_pts;
354  int64_t end_pts;
355  AVFifoBuffer *sub_queue; ///< queue of AVSubtitle* before filter init
357  int w, h;
358  unsigned int initialize; ///< marks if sub2video_update should force an initialization
359  } sub2video;
361  int dr1;
363  /* decoded data from this stream goes into all those filters
364  * currently video and audio only */
370  /* hwaccel options */
371  enum HWAccelID hwaccel_id;
372  enum AVHWDeviceType hwaccel_device_type;
374  enum AVPixelFormat hwaccel_output_format;
376  /* hwaccel context */
377  void *hwaccel_ctx;
379  int (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
381  enum AVPixelFormat hwaccel_pix_fmt;
382  enum AVPixelFormat hwaccel_retrieved_pix_fmt;
385  /* stats */
386  // combined size of all the packets read
387  uint64_t data_size;
388  /* number of packets successfully read for this stream */
389  uint64_t nb_packets;
390  // number of frames/samples retrieved from the decoder
391  uint64_t frames_decoded;
392  uint64_t samples_decoded;
394  int64_t *dts_buffer;
397  int got_output;
398 } InputStream;
400 typedef struct InputFile {
402  int eof_reached; /* true if eof reached */
403  int eagain; /* true if last read attempt returned EAGAIN */
404  int ist_index; /* index of first stream in input_streams */
405  int loop; /* set number of times input stream should be looped */
406  int64_t duration; /* actual duration of the longest stream in a file
407  at the moment when looping happens */
408  AVRational time_base; /* time base of the duration */
411  int64_t ts_offset;
412  int64_t last_ts;
413  int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
415  int64_t recording_time;
416  int nb_streams; /* number of stream that ffmpeg is aware of; may be different
417  from ctx.nb_streams if new streams appear during av_read_frame() */
418  int nb_streams_warn; /* number of streams that the user was warned of */
419  int rate_emu;
425  AVThreadMessageQueue *in_thread_queue;
426  pthread_t thread; /* thread reading from this file */
427  int non_blocking; /* reading packets from the thread should not block */
428  int joined; /* the thread has been joined */
429  int thread_queue_size; /* maximum number of queued packets */
430 #endif
431 } InputFile;
440 };
442 #define ABORT_ON_FLAG_EMPTY_OUTPUT (1 << 0)
445 extern const char *const forced_keyframes_const_names[];
447 typedef enum {
450 } OSTFinished ;
452 typedef struct OutputStream {
453  int file_index; /* file index */
454  int index; /* stream index in the output file */
455  int source_index; /* InputStream index */
456  AVStream *st; /* stream in the output file */
457  int encoding_needed; /* true if encoding needed for this stream */
459  /* input pts and corresponding output pts
460  for A/V sync */
461  struct InputStream *sync_ist; /* input stream to sync against */
462  int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
463  /* pts of the first frame encoded for this stream, used for limiting
464  * recording time */
465  int64_t first_pts;
466  /* dts of the last packet sent to the muxer */
467  int64_t last_mux_dts;
468  // the timebase of the packets sent to the muxer
475  AVCodecParameters *ref_par; /* associated input codec parameters with encoders options applied */
476  const AVCodec *enc;
477  int64_t max_frames;
482  int last_nb0_frames[3];
484  void *hwaccel_ctx;
486  /* video only */
489  int is_cfr;
498  /* forced key frames */
500  int64_t *forced_kf_pts;
505  double forced_keyframes_expr_const_values[FKF_NB];
507  /* audio only */
508  int *audio_channels_map; /* list of the channels id to pick from the source stream */
509  int audio_channels_mapped; /* number of channels in audio_channels_map */
512  FILE *logfile;
515  char *avfilter;
516  char *filters; ///< filtergraph associated to the -filter option
517  char *filters_script; ///< filtergraph script associated to the -filter_script option
523  char *apad;
524  OSTFinished finished; /* no more packets should be written for this stream */
525  int unavailable; /* true if the steram is unavailable (possibly temporarily) */
528  // init_output_stream() has been called for this stream
529  // The encoder and the bitstream filters have been initialized and the stream
530  // parameters are set in the AVStream.
535  const char *attachment_filename;
538  char *disposition;
542  /* stats */
543  // combined size of all the packets written
544  uint64_t data_size;
545  // number of packets send to the muxer
546  uint64_t packets_written;
547  // number of frames/samples sent to the encoder
548  uint64_t frames_encoded;
549  uint64_t samples_encoded;
551  /* packet quality factor */
552  int quality;
556  /* the packets are buffered here until the muxer is ready to be initialized */
559  /*
560  * The size of the AVPackets' buffers in queue.
561  * Updated when a packet is either pushed or pulled from the queue.
562  */
565  /* Threshold after which max_muxing_queue_size will be in effect */
568  /* packet picture type */
571  /* frame encode sum of squared error values */
572  int64_t error[4];
573 } OutputStream;
575 typedef struct OutputFile {
578  int ost_index; /* index of the first stream in output_streams */
579  int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
580  int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units
581  uint64_t limit_filesize; /* filesize limit expressed in bytes */
583  int shortest;
586 } OutputFile;
588 extern InputStream **input_streams;
589 extern int nb_input_streams;
590 extern InputFile **input_files;
591 extern int nb_input_files;
594 extern int nb_output_streams;
595 extern OutputFile **output_files;
596 extern int nb_output_files;
598 extern FilterGraph **filtergraphs;
599 extern int nb_filtergraphs;
601 extern char *vstats_filename;
602 extern char *sdp_filename;
604 extern float audio_drift_threshold;
605 extern float dts_delta_threshold;
606 extern float dts_error_threshold;
608 extern int audio_volume;
609 extern int audio_sync_method;
610 extern int video_sync_method;
611 extern float frame_drop_threshold;
612 extern int do_benchmark;
613 extern int do_benchmark_all;
614 extern int do_deinterlace;
615 extern int do_hex_dump;
616 extern int do_pkt_dump;
617 extern int copy_ts;
618 extern int start_at_zero;
619 extern int copy_tb;
620 extern int debug_ts;
621 extern int exit_on_error;
622 extern int abort_on_flags;
623 extern int print_stats;
624 extern int64_t stats_period;
625 extern int qp_hist;
626 extern int stdin_interaction;
627 extern int frame_bits_per_raw_sample;
628 extern AVIOContext *progress_avio;
629 extern float max_error_rate;
630 extern char *videotoolbox_pixfmt;
632 extern int filter_nbthreads;
633 extern int filter_complex_nbthreads;
634 extern int vstats_version;
635 extern int auto_conversion_filters;
637 extern const AVIOInterruptCB int_cb;
639 extern const OptionDef options[];
640 extern const HWAccel hwaccels[];
641 #if CONFIG_QSV
642 extern char *qsv_device;
643 #endif
644 extern HWDevice *filter_hw_device;
647 void term_init(void);
648 void term_exit(void);
650 void show_usage(void);
658 void check_filter_outputs(void);
663 void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub);
667 int ffmpeg_parse_options(int argc, char **argv);
672 HWDevice *hw_device_get_by_name(const char *name);
673 int hw_device_init_from_string(const char *arg, HWDevice **dev);
674 void hw_device_free_all(void);
682 #endif /* FFTOOLS_FFMPEG_H */
int64_t pts
current pts of the decoded frame (in AV_TIME_BASE units)
Definition: ffmpeg.h:322
SpecifierOpt * passlogfiles
Definition: ffmpeg.h:216
AVRational enc_timebase
Definition: ffmpeg.h:470
int nb_dump_attachment
Definition: ffmpeg.h:128
int got_output
Definition: ffmpeg.h:347
int nb_metadata
Definition: ffmpeg.h:169
int nb_streamid_map
Definition: ffmpeg.h:166
int frame_number
Definition: ffmpeg.h:458
int width
Definition: ffmpeg.h:275
Definition: ffmpeg.h:434
int keep_pix_fmt
Definition: ffmpeg.h:540
Bytestream IO Context.
Definition: avio.h:161
float mux_preload
Definition: ffmpeg.h:154
int64_t recording_time
desired length of the resulting file in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:579
Definition: ffmpeg.h:58
Buffered I/O operations.
uint8_t * name
Definition: ffmpeg.h:268
int nb_outputs
Definition: ffmpeg.h:297
char * qsv_device
Definition: ffmpeg_qsv.c:32
AVDictionary * swr_opts
Definition: ffmpeg.h:521
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int stream_copy
Definition: ffmpeg.h:526
AVRational frame_rate
Definition: ffmpeg.h:487
int64_t * forced_kf_pts
Definition: ffmpeg.h:500
int64_t start_time_eof
Definition: ffmpeg.h:99
AVBufferRef * hw_frames_ctx
Definition: ffmpeg.h:383
char * filters
filtergraph associated to the -filter option
Definition: ffmpeg.h:516
SpecifierOpt * hwaccel_output_formats
Definition: ffmpeg.h:133
HWDevice * filter_hw_device
Definition: ffmpeg_opt.c:145
int data_disable
Definition: ffmpeg.h:162
float mux_max_delay
Definition: ffmpeg.h:155
int exit_on_error
Definition: ffmpeg_opt.c:167
int64_t cfr_next_pts
Definition: ffmpeg.h:332
int accurate_seek
Definition: ffmpeg.h:420
OutputFile ** output_files
Definition: ffmpeg.c:155
int64_t forced_kf_ref_pts
Definition: ffmpeg.h:499
int nb_forced_key_frames
Definition: ffmpeg.h:181
int * streamid_map
Definition: ffmpeg.h:165
Main libavfilter public API header.
int nb_stream_maps
Definition: ffmpeg.h:140
SpecifierOpt * copy_initial_nonkeyframes
Definition: ffmpeg.h:200
int ostream_idx
Definition: ffmpeg.h:91
int nb_chroma_intra_matrices
Definition: ffmpeg.h:193
AVRational framerate
Definition: ffmpeg.h:339
SpecifierOpt * reinit_filters
Definition: ffmpeg.h:208
SpecifierOpt * ts_scale
Definition: ffmpeg.h:125
AVRational max_frame_rate
Definition: ffmpeg.h:488
int64_t max_pts
Definition: ffmpeg.h:328
AVFilterInOut * out_tmp
Definition: ffmpeg.h:271
int bitexact
Definition: ffmpeg.h:157
int decoding_needed
Definition: ffmpeg.h:305
int nb_canvas_sizes
Definition: ffmpeg.h:213
The bitstream filter state.
Definition: bsf.h:49
int rotate_overridden
Definition: ffmpeg.h:492
int max_muxing_queue_size
Definition: ffmpeg.h:554
SpecifierOpt * discard
Definition: ffmpeg.h:226
int nb_frame_pix_fmts
Definition: ffmpeg.h:116
void * hwaccel_ctx
Definition: ffmpeg.h:484
SpecifierOpt * sample_fmts
Definition: ffmpeg.h:176
SpecifierOpt * guess_layout_max
Definition: ffmpeg.h:222
void hw_device_free_all(void)
Definition: ffmpeg_hw.c:274
int eagain
Definition: ffmpeg.h:403
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
Convenience header that includes libavutil&#39;s core.
Definition: ffmpeg.h:433
GLint GLenum type
Definition: opengl_enc.c:104
int quality
Definition: ffmpeg.h:552
AVFrame * filter_frame
Definition: ffmpeg.h:312
int do_benchmark_all
Definition: ffmpeg_opt.c:160
int nb_program
Definition: ffmpeg.h:231
int last_dropped
Definition: ffmpeg.h:481
FilterGraph ** filtergraphs
Definition: ffmpeg.c:158
int64_t input_ts_offset
Definition: ffmpeg.h:409
int do_hex_dump
Definition: ffmpeg_opt.c:161
int nb_filter_scripts
Definition: ffmpeg.h:207
static void error(const char *err)
const char * name
Definition: ffmpeg.h:67
int nb_muxing_queue_data_threshold
Definition: ffmpeg.h:221
uint64_t packets_written
Definition: ffmpeg.h:546
Definition: codec.h:197
int nb_dts_buffer
Definition: ffmpeg.h:395
SpecifierOpt * filters
Definition: ffmpeg.h:204
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int print_stats
Definition: ffmpeg_opt.c:169
float dts_error_threshold
Definition: ffmpeg_opt.c:152
int64_t start_time
start time in microseconds == AV_TIME_BASE units
Definition: ffmpeg.h:580
int index
Definition: ffmpeg.h:288
uint64_t data_size
Definition: ffmpeg.h:544
SpecifierOpt * qscale
Definition: ffmpeg.h:178
SpecifierOpt * frame_pix_fmts
Definition: ffmpeg.h:115
SpecifierOpt * chroma_intra_matrices
Definition: ffmpeg.h:192
struct FilterGraph * graph
Definition: ffmpeg.h:243
SpecifierOpt * intra_matrices
Definition: ffmpeg.h:188
int encoding_needed
Definition: ffmpeg.h:457
Format I/O context.
Definition: avformat.h:1247
void remove_avoptions(AVDictionary **a, AVDictionary *b)
Definition: ffmpeg.c:676
uint64_t samples_decoded
Definition: ffmpeg.h:392
struct InputStream * ist
Definition: ffmpeg.h:242
enum HWAccelID id
Definition: ffmpeg.h:69
uint64_t frames_decoded
Definition: ffmpeg.h:391
int header_written
Definition: ffmpeg.h:585
AVFilterGraph * graph
Definition: ffmpeg.h:291
Public dictionary API.
char * logfile_prefix
Definition: ffmpeg.h:511
int user_set_discard
Definition: ffmpeg.h:304
int copy_initial_nonkeyframes
Definition: ffmpeg.h:536
int64_t * dts_buffer
Definition: ffmpeg.h:394
AVDictionary * sws_dict
Definition: ffmpeg.h:520
int auto_conversion_filters
Definition: ffmpeg_opt.c:177
int nb_time_bases
Definition: ffmpeg.h:233
const AVCodec * dec
Definition: ffmpeg.h:310
int stdin_interaction
Definition: ffmpeg_opt.c:171
FILE * logfile
Definition: ffmpeg.h:512
AVDictionary * opts
Definition: ffmpeg.h:577
Definition: eval.c:157
int do_benchmark
Definition: ffmpeg_opt.c:159
int audio_sync_method
Definition: ffmpeg_opt.c:155
int nb_max_frames
Definition: ffmpeg.h:171
int shortest
Definition: ffmpeg.h:583
int nb_output_streams
Definition: ffmpeg.c:154
#define height
void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub)
Definition: ffmpeg.c:241
int nb_streams
Definition: ffmpeg.h:416
int sync_file_index
Definition: ffmpeg.h:84
AVDictionary * resample_opts
Definition: ffmpeg.h:522
int seek_timestamp
Definition: ffmpeg.h:100
AVFilterContext * filter
Definition: ffmpeg.h:265
int * formats
Definition: ffmpeg.h:282
AVPacket * pkt
Definition: ffmpeg.h:313
SpecifierOpt * bitstream_filters
Definition: ffmpeg.h:172
int init_complex_filtergraph(FilterGraph *fg)
int top_field_first
Definition: ffmpeg.h:340
int file_index
Definition: ffmpeg.h:301
int64_t filter_in_rescale_delta_last
Definition: ffmpeg.h:325
int wrap_correction_done
Definition: ffmpeg.h:323
int filter_complex_nbthreads
Definition: ffmpeg_opt.c:175
SpecifierOpt * disposition
Definition: ffmpeg.h:228
int64_t next_dts
Definition: ffmpeg.h:318
unsigned int initialize
marks if sub2video_update should force an initialization
Definition: ffmpeg.h:358
SpecifierOpt * enc_time_bases
Definition: ffmpeg.h:234
uint64_t channel_layout
Definition: ffmpeg.h:279
AVFifoBuffer * sub_queue
queue of AVSubtitle* before filter init
Definition: ffmpeg.h:355
Callback for checking whether to abort blocking functions.
Definition: avio.h:58
libswresample public header
int nb_top_field_first
Definition: ffmpeg.h:195
int hw_device_setup_for_filter(FilterGraph *fg)
Definition: ffmpeg_hw.c:525
AVRational sample_aspect_ratio
Definition: ffmpeg.h:253
int rate_emu
Definition: ffmpeg.h:419
int nb_discard
Definition: ffmpeg.h:227
int sample_rate
Definition: ffmpeg.h:255
void check_filter_outputs(void)
int ffmpeg_parse_options(int argc, char **argv)
Definition: ffmpeg_opt.c:3351
AVFilterContext * filter
Definition: ffmpeg.h:241
int nb_filters
Definition: ffmpeg.h:205
int64_t start_time
Definition: ffmpeg.h:98
int64_t start
Definition: ffmpeg.h:315
int loop
Definition: ffmpeg.h:405
uint64_t nb_packets
Definition: ffmpeg.h:389
int seek_timestamp
Definition: ffmpeg.h:414
int64_t last_mux_dts
Definition: ffmpeg.h:467
int video_sync_method
Definition: ffmpeg_opt.c:156
int format
Definition: ffmpeg.h:250
char * sdp_filename
Definition: ffmpeg_opt.c:148
SpecifierOpt * apad
Definition: ffmpeg.h:224
int dr1
Definition: ffmpeg.h:361
int nb_hwaccel_devices
Definition: ffmpeg.h:132
AudioChannelMap * audio_channel_maps
Definition: ffmpeg.h:141
int nb_disposition
Definition: ffmpeg.h:229
const char * arg
Definition: jacosubdec.c:66
SpecifierOpt * codec_tags
Definition: ffmpeg.h:174
SpecifierOpt * rc_overrides
Definition: ffmpeg.h:186
const AVCodec * enc
Definition: ffmpeg.h:476
size_t muxing_queue_data_threshold
Definition: ffmpeg.h:566
int video_disable
Definition: ffmpeg.h:159
int eof
Definition: ffmpeg.h:261
int nb_input_files
Definition: ffmpeg.c:151
int force_fps
Definition: ffmpeg.h:490
int hw_device_setup_for_encode(OutputStream *ost)
Definition: ffmpeg_hw.c:419
int nb_codec_names
Definition: ffmpeg.h:104
int qp_hist
Definition: ffmpeg_opt.c:170
StreamMap * stream_maps
Definition: ffmpeg.h:139
float frame_drop_threshold
Definition: ffmpeg_opt.c:157
uint64_t limit_filesize
Definition: ffmpeg.h:153
const char * format
Definition: ffmpeg.h:101
int nb_passlogfiles
Definition: ffmpeg.h:217
SpecifierOpt * max_frame_rates
Definition: ffmpeg.h:111
int filter_nbthreads
Definition: ffmpeg_opt.c:174
int nb_force_fps
Definition: ffmpeg.h:183
OutputFilter * filter
Definition: ffmpeg.h:514
const char * name
Definition: ffmpeg.h:74
AVRational frame_aspect_ratio
Definition: ffmpeg.h:496
int nb_sample_fmts
Definition: ffmpeg.h:177
int file_index
Definition: ffmpeg.h:82
int nb_audio_channel_maps
Definition: ffmpeg.h:142
AVRational mux_timebase
Definition: ffmpeg.h:469
SpecifierOpt * filter_scripts
Definition: ffmpeg.h:206
int nb_attachments
Definition: ffmpeg.h:147
char * linklabel
Definition: ffmpeg.h:86
#define b
Definition: input.c:41
int nb_hwaccel_output_formats
Definition: ffmpeg.h:134
int nb_ts_scale
Definition: ffmpeg.h:126
int is_cfr
Definition: ffmpeg.h:489
SpecifierOpt * audio_channels
Definition: ffmpeg.h:105
uint64_t * channel_layouts
Definition: ffmpeg.h:283
int saw_first_ts
Definition: ffmpeg.h:337
int nb_audio_sample_rate
Definition: ffmpeg.h:108
int abort_on_flags
Definition: ffmpeg_opt.c:168
SpecifierOpt * time_bases
Definition: ffmpeg.h:232
int metadata_chapters_manual
Definition: ffmpeg.h:145
struct OutputStream * ost
Definition: ffmpeg.h:266
int accurate_seek
Definition: ffmpeg.h:122
char * apad
Definition: ffmpeg.h:523
SpecifierOpt * pass
Definition: ffmpeg.h:214
int64_t nb_samples
Definition: ffmpeg.h:334
SpecifierOpt * audio_sample_rate
Definition: ffmpeg.h:107
int hw_device_setup_for_decode(InputStream *ist)
Definition: ffmpeg_hw.c:303
int64_t duration
Definition: ffmpeg.h:406
int width
Definition: ffmpeg.h:252
int nb_autoscale
Definition: ffmpeg.h:237
int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
SpecifierOpt * dump_attachment
Definition: ffmpeg.h:127
void assert_avoptions(AVDictionary *m)
Definition: ffmpeg.c:685
SpecifierOpt * canvas_sizes
Definition: ffmpeg.h:212
int nb_codec_tags
Definition: ffmpeg.h:175
int qsv_init(AVCodecContext *s)
Definition: ffmpeg_qsv.c:72
int64_t last_ts
Definition: ffmpeg.h:412
SpecifierOpt * metadata_map
Definition: ffmpeg.h:196
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
#define s(width, name)
Definition: cbs_vp9.c:257
int do_pkt_dump
Definition: ffmpeg_opt.c:162
int64_t max_frames
Definition: ffmpeg.h:477
int audio_channels_mapped
Definition: ffmpeg.h:509
SpecifierOpt * copy_prior_start
Definition: ffmpeg.h:202
SpecifierOpt * frame_aspect_ratios
Definition: ffmpeg.h:184
SpecifierOpt * frame_sizes
Definition: ffmpeg.h:113
int stream_idx
Definition: ffmpeg.h:90
int sample_rate
Definition: ffmpeg.h:278
int nb_hwaccels
Definition: ffmpeg.h:130
int inputs_done
Definition: ffmpeg.h:533
int vstats_version
Definition: ffmpeg_opt.c:176
int64_t stats_period
Definition: ffmpeg_opt.c:178
AVPacket * pkt
Definition: ffmpeg.h:480
HWDevice * hw_device_get_by_name(const char *name)
Definition: ffmpeg_hw.c:44
int start_at_zero
Definition: ffmpeg_opt.c:164
int ret
Definition: ffmpeg.h:348
int audio_volume
Definition: ffmpeg_opt.c:154
Stream structure.
Definition: avformat.h:884
A linked-list of the inputs/outputs of the filter chain.
Definition: avfilter.h:1013
InputFilter ** filters
Definition: ffmpeg.h:365
int fix_sub_duration
Definition: ffmpeg.h:345
int64_t recording_time
Definition: ffmpeg.h:415
SpecifierOpt * hwaccels
Definition: ffmpeg.h:129
SpecifierOpt * autoscale
Definition: ffmpeg.h:236
Definition: ffmpeg.h:66
int(* init)(AVCodecContext *s)
Definition: ffmpeg.h:68
SpecifierOpt * frame_rates
Definition: ffmpeg.h:109
AVStream * st
Definition: ffmpeg.h:302
int nb_presets
Definition: ffmpeg.h:199
int ost_index
Definition: ffmpeg.h:578
struct InputStream * sync_ist
Definition: ffmpeg.h:461
OutputStream * ost
Libavcodec external API header.
double ts_scale
Definition: ffmpeg.h:336
int64_t recording_time
Definition: ffmpeg.h:151
int unavailable
Definition: ffmpeg.h:525
void term_exit(void)
Definition: ffmpeg.c:337
int chapters_input_file
Definition: ffmpeg.h:149
int64_t stop_time
Definition: ffmpeg.h:152
float max_error_rate
Definition: ffmpeg_opt.c:173
uint64_t frames_encoded
Definition: ffmpeg.h:548
int nb_copy_prior_start
Definition: ffmpeg.h:203
AVFifoBuffer * muxing_queue
Definition: ffmpeg.h:557
OutputStream ** output_streams
Definition: ffmpeg.c:153
int ist_index
Definition: ffmpeg.h:404
const char * graph_desc
Definition: ffmpeg.h:289
int guess_layout_max
Definition: ffmpeg.h:341
int64_t start_time
Definition: ffmpeg.h:413
main external API structure.
Definition: avcodec.h:536
InputFile ** input_files
Definition: ffmpeg.c:150
int rate_emu
Definition: ffmpeg.h:121
int * sample_rates
Definition: ffmpeg.h:284
int metadata_streams_manual
Definition: ffmpeg.h:144
const char * attachment_filename
Definition: ffmpeg.h:535
a very simple circular buffer FIFO implementation
AVRational time_base
Definition: ffmpeg.h:408
AVCodecContext * enc_ctx
Definition: ffmpeg.h:474
int audio_disable
Definition: ffmpeg.h:160
int64_t input_ts_offset
Definition: ffmpeg.h:119
int nb_filtergraphs
Definition: ffmpeg.c:159
AVFrame * decoded_frame
Definition: ffmpeg.h:311
AVBufferRef * hw_frames_ctx
Definition: ffmpeg.h:259
int nb_bitstream_filters
Definition: ffmpeg.h:173
SpecifierOpt * top_field_first
Definition: ffmpeg.h:194
int channels
Definition: ffmpeg.h:256
size_t muxing_queue_data_size
Definition: ffmpeg.h:563
int * audio_channels_map
Definition: ffmpeg.h:508
int configure_filtergraph(FilterGraph *fg)
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int file_index
Definition: ffmpeg.h:453
int metadata_global_manual
Definition: ffmpeg.h:143
double rotate_override_value
Definition: ffmpeg.h:494
int64_t sync_opts
Definition: ffmpeg.h:462
char * vstats_filename
Definition: ffmpeg_opt.c:147
AVCodecContext * dec_ctx
Definition: ffmpeg.h:309
SpecifierOpt * force_fps
Definition: ffmpeg.h:182
char * disposition
Definition: ffmpeg.h:538
int filtergraph_is_simple(FilterGraph *fg)
Definition: avutil.h:199
int nb_fix_sub_duration
Definition: ffmpeg.h:211
int nb_inter_matrices
Definition: ffmpeg.h:191
int nb_max_frame_rates
Definition: ffmpeg.h:112
int nb_streams_warn
Definition: ffmpeg.h:418
AVDictionary * decoder_opts
Definition: ffmpeg.h:338
int shortest
Definition: ffmpeg.h:156
int autorotate
Definition: ffmpeg.h:343
int frame_bits_per_raw_sample
Definition: ffmpeg_opt.c:172
int64_t ts_offset
Definition: ffmpeg.h:411
int nb_qscale
Definition: ffmpeg.h:179
char * filters_script
filtergraph script associated to the -filter_script option
Definition: ffmpeg.h:517
int nb_enc_time_bases
Definition: ffmpeg.h:235
SpecifierOpt * hwaccel_devices
Definition: ffmpeg.h:131
int nb_input_streams
Definition: ffmpeg.c:149
float audio_drift_threshold
Definition: ffmpeg_opt.c:150
AVFrame * filtered_frame
Definition: ffmpeg.h:478
int nb_autorotate
Definition: ffmpeg.h:136
int nb_audio_channels
Definition: ffmpeg.h:106
int source_index
Definition: ffmpeg.h:455
InputStream ** input_streams
Definition: ffmpeg.c:148
int copy_prior_start
Definition: ffmpeg.h:537
SpecifierOpt * metadata
Definition: ffmpeg.h:168
AVIOContext * progress_avio
Definition: ffmpeg.c:144
#define flags(name, subs,...)
Definition: cbs_av1.c:561
int nb_filters
Definition: ffmpeg.h:366
int autoscale
Definition: ffmpeg.h:493
AVExpr * forced_keyframes_pexpr
Definition: ffmpeg.h:504
static int hwaccel_retrieve_data(AVCodecContext *avctx, AVFrame *input)
Definition: ffmpeg_hw.c:474
int64_t dts
dts of the last packet read for this stream (in AV_TIME_BASE units)
Definition: ffmpeg.h:319
int forced_kf_count
Definition: ffmpeg.h:501
int nb_intra_matrices
Definition: ffmpeg.h:189
OSTFinished finished
Definition: ffmpeg.h:524
char * forced_keyframes
Definition: ffmpeg.h:503
int nb_frame_rates
Definition: ffmpeg.h:110
uint64_t data_size
Definition: ffmpeg.h:387
const AVIOInterruptCB int_cb
Definition: ffmpeg.c:513
A reference to a data buffer.
Definition: buffer.h:84
int64_t next_pts
synthetic pts for the next decode frame (in AV_TIME_BASE units)
Definition: ffmpeg.h:321
Main libavformat public API header.
SpecifierOpt * max_muxing_queue_size
Definition: ffmpeg.h:218
int reconfiguration
Definition: ffmpeg.h:292
struct FilterGraph * graph
Definition: ffmpeg.h:267
uint64_t limit_filesize
Definition: ffmpeg.h:581
const OptionDef options[]
Definition: ffmpeg_opt.c:3427
SpecifierOpt * presets
Definition: ffmpeg.h:198
SpecifierOpt * program
Definition: ffmpeg.h:230
int reinit_filters
Definition: ffmpeg.h:368
int nb_frame_sizes
Definition: ffmpeg.h:114
AVCodecParameters * ref_par
Definition: ffmpeg.h:475
Utilties for rational number calculation.
OptionGroup * g
Definition: ffmpeg.h:95
SpecifierOpt * inter_matrices
Definition: ffmpeg.h:190
const char *const forced_keyframes_const_names[]
Definition: ffmpeg.c:114
AVBufferRef * device_ref
Definition: ffmpeg.h:76
SpecifierOpt * forced_key_frames
Definition: ffmpeg.h:180
uint64_t samples_encoded
Definition: ffmpeg.h:549
const char ** attachments
Definition: ffmpeg.h:146
int nb_max_muxing_queue_size
Definition: ffmpeg.h:219
AVFrame * last_frame
Definition: ffmpeg.h:479
SpecifierOpt * muxing_queue_data_threshold
Definition: ffmpeg.h:220
uint64_t channel_layout
Definition: ffmpeg.h:257
AVBSFContext * bsf_ctx
Definition: ffmpeg.h:472
int copy_ts
Definition: ffmpeg_opt.c:163
AVFormatContext * ctx
Definition: ffmpeg.h:401
int pict_type
Definition: ffmpeg.h:569
int stream_index
Definition: ffmpeg.h:83
AVSubtitle subtitle
Definition: ffmpeg.h:349
enum AVPixelFormat pix_fmt
Definition: ffmpeg.h:70
int eof_reached
Definition: ffmpeg.h:402
int nb_metadata_map
Definition: ffmpeg.h:197
int forced_kf_index
Definition: ffmpeg.h:502
int nb_rc_overrides
Definition: ffmpeg.h:187
int do_deinterlace
Definition: ffmpeg_opt.c:158
SpecifierOpt * fix_sub_duration
Definition: ffmpeg.h:210
Definition: ffmpeg.h:439
pixel format definitions
Definition: hwcontext.h:27
char * avfilter
Definition: ffmpeg.h:515
SpecifierOpt * autorotate
Definition: ffmpeg.h:135
int hwaccel_decode_init(AVCodecContext *avctx)
Definition: ffmpeg_hw.c:516
uint8_t * name
Definition: ffmpeg.h:244
float dts_delta_threshold
Definition: ffmpeg_opt.c:151
void * hwaccel_ctx
Definition: ffmpeg.h:377
int guess_input_channel_layout(InputStream *ist)
Definition: ffmpeg.c:2124
int top_field_first
Definition: ffmpeg.h:491
OutputFilter ** outputs
Definition: ffmpeg.h:296
SpecifierOpt * max_frames
Definition: ffmpeg.h:170
int nb_copy_initial_nonkeyframes
Definition: ffmpeg.h:201
int disabled
Definition: ffmpeg.h:81
AVRational frame_rate
Definition: ffmpeg.h:276
AVFormatContext * ctx
Definition: ffmpeg.h:576
int nb_output_files
Definition: ffmpeg.c:156
int hw_device_init_from_string(const char *arg, HWDevice **dev)
Definition: ffmpeg_hw.c:94
SpecifierOpt * codec_names
Definition: ffmpeg.h:103
void show_usage(void)
Definition: ffmpeg_opt.c:3300
int thread_queue_size
Definition: ffmpeg.h:123
An instance of a filter.
Definition: avfilter.h:341
char * hwaccel_device
Definition: ffmpeg.h:373
fg inputs[0] ist
AVDictionary * encoder_opts
Definition: ffmpeg.h:519
InputFilter ** inputs
Definition: ffmpeg.h:294
char * videotoolbox_pixfmt
int sync_stream_index
Definition: ffmpeg.h:85
static float sub(float src0, float src1)
int format
Definition: ffmpeg.h:277
int copy_tb
Definition: ffmpeg_opt.c:165
int64_t min_pts
Definition: ffmpeg.h:327
int initialized
Definition: ffmpeg.h:531
int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
int discard
Definition: ffmpeg.h:303
AVPacket * pkt
Definition: ffmpeg.h:422
int64_t first_pts
Definition: ffmpeg.h:465
int nb_inputs
Definition: ffmpeg.h:295
int index
Definition: ffmpeg.h:454
Pixel format.
Definition: pixfmt.h:64
Definition: ffmpeg.h:447
This structure stores compressed data.
Definition: packet.h:346
int nb_reinit_filters
Definition: ffmpeg.h:209
AVFifoBuffer * frame_queue
Definition: ffmpeg.h:247
int debug_ts
Definition: ffmpeg_opt.c:166
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1305
int nb_guess_layout_max
Definition: ffmpeg.h:223
void term_init(void)
Definition: ffmpeg.c:408
int nb_frame_aspect_ratios
Definition: ffmpeg.h:185
const HWAccel hwaccels[]
Definition: ffmpeg_opt.c:136
int videotoolbox_init(AVCodecContext *s)
Definition: ffmpeg.h:438
simple arithmetic expression evaluator
const char * name
Definition: opengl_enc.c:102
int subtitle_disable
Definition: ffmpeg.h:161