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/* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
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#ifndef FFMPEG_H
#define FFMPEG_H |
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#include "config.h"
#include <stdint.h>
#include <stdio.h> |
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#include <signal.h> |
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#if HAVE_PTHREADS
#include <pthread.h>
#endif
#include "cmdutils.h"
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
#include "libavcodec/avcodec.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/avfiltergraph.h"
#include "libavutil/avutil.h"
#include "libavutil/dict.h"
#include "libavutil/fifo.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
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#include "libswresample/swresample.h"
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#define VSYNC_AUTO -1
#define VSYNC_PASSTHROUGH 0
#define VSYNC_CFR 1
#define VSYNC_VFR 2 |
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#define VSYNC_DROP 0xff
#define MAX_STREAMS 1024 /* arbitrary sanity check value */ |
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/* select an input stream for an output stream */
typedef struct StreamMap { |
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int disabled; /* 1 is this mapping is disabled by a negative map */ |
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int file_index;
int stream_index;
int sync_file_index;
int sync_stream_index; |
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char *linklabel; /* name of an output link, for mapping lavfi outputs */ |
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} StreamMap;
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typedef struct {
int file_idx, stream_idx, channel_idx; // input
int ofile_idx, ostream_idx; // output
} AudioChannelMap; |
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typedef struct OptionsContext { |
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OptionGroup *g;
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/* input/output options */
int64_t start_time;
const char *format;
SpecifierOpt *codec_names;
int nb_codec_names;
SpecifierOpt *audio_channels;
int nb_audio_channels;
SpecifierOpt *audio_sample_rate;
int nb_audio_sample_rate;
SpecifierOpt *frame_rates;
int nb_frame_rates;
SpecifierOpt *frame_sizes;
int nb_frame_sizes;
SpecifierOpt *frame_pix_fmts;
int nb_frame_pix_fmts;
/* input options */
int64_t input_ts_offset;
int rate_emu;
SpecifierOpt *ts_scale;
int nb_ts_scale;
SpecifierOpt *dump_attachment;
int nb_dump_attachment;
/* output options */
StreamMap *stream_maps;
int nb_stream_maps; |
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AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */
int nb_audio_channel_maps; /* number of (valid) -map_channel settings */ |
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int metadata_global_manual;
int metadata_streams_manual;
int metadata_chapters_manual;
const char **attachments;
int nb_attachments;
int chapters_input_file;
int64_t recording_time;
uint64_t limit_filesize;
float mux_preload;
float mux_max_delay; |
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int shortest; |
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int video_disable;
int audio_disable;
int subtitle_disable;
int data_disable;
/* indexed by output file stream index */
int *streamid_map;
int nb_streamid_map;
SpecifierOpt *metadata;
int nb_metadata;
SpecifierOpt *max_frames;
int nb_max_frames;
SpecifierOpt *bitstream_filters;
int nb_bitstream_filters;
SpecifierOpt *codec_tags;
int nb_codec_tags;
SpecifierOpt *sample_fmts;
int nb_sample_fmts;
SpecifierOpt *qscale;
int nb_qscale;
SpecifierOpt *forced_key_frames;
int nb_forced_key_frames;
SpecifierOpt *force_fps;
int nb_force_fps;
SpecifierOpt *frame_aspect_ratios;
int nb_frame_aspect_ratios;
SpecifierOpt *rc_overrides;
int nb_rc_overrides;
SpecifierOpt *intra_matrices;
int nb_intra_matrices;
SpecifierOpt *inter_matrices;
int nb_inter_matrices;
SpecifierOpt *top_field_first;
int nb_top_field_first;
SpecifierOpt *metadata_map;
int nb_metadata_map;
SpecifierOpt *presets;
int nb_presets;
SpecifierOpt *copy_initial_nonkeyframes;
int nb_copy_initial_nonkeyframes; |
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SpecifierOpt *copy_prior_start;
int nb_copy_prior_start; |
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SpecifierOpt *filters;
int nb_filters; |
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SpecifierOpt *reinit_filters;
int nb_reinit_filters; |
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SpecifierOpt *fix_sub_duration;
int nb_fix_sub_duration; |
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SpecifierOpt *pass;
int nb_pass; |
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SpecifierOpt *passlogfiles;
int nb_passlogfiles; |
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} OptionsContext;
typedef struct InputFilter {
AVFilterContext *filter;
struct InputStream *ist;
struct FilterGraph *graph;
uint8_t *name;
} InputFilter;
typedef struct OutputFilter {
AVFilterContext *filter;
struct OutputStream *ost;
struct FilterGraph *graph;
uint8_t *name;
/* temporary storage until stream maps are processed */
AVFilterInOut *out_tmp;
} OutputFilter;
typedef struct FilterGraph {
int index;
const char *graph_desc;
AVFilterGraph *graph;
InputFilter **inputs;
int nb_inputs;
OutputFilter **outputs;
int nb_outputs;
} FilterGraph;
typedef struct InputStream {
int file_index;
AVStream *st;
int discard; /* true if stream data should be discarded */
int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
AVCodec *dec;
AVFrame *decoded_frame;
int64_t start; /* time when read started */
/* predicted dts of the next packet read for this stream or (when there are |
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* several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */ |
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int64_t next_dts; |
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int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units)
int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units)
int wrap_correction_done; |
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int64_t filter_in_rescale_delta_last;
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double ts_scale;
int is_start; /* is 1 at the start and after a discontinuity */ |
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int saw_first_ts; |
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int showed_multi_packet_warning;
AVDictionary *opts;
AVRational framerate; /* framerate forced with -r */ |
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int top_field_first; |
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int resample_height;
int resample_width;
int resample_pix_fmt;
int resample_sample_fmt;
int resample_sample_rate;
int resample_channels;
uint64_t resample_channel_layout;
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int fix_sub_duration;
struct { /* previous decoded subtitle and related variables */
int got_output;
int ret;
AVSubtitle subtitle;
} prev_sub;
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struct sub2video {
int64_t last_pts; |
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int64_t end_pts; |
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AVFilterBufferRef *ref;
int w, h;
} sub2video;
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/* a pool of free buffers for decoded data */
FrameBuffer *buffer_pool; |
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int dr1; |
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/* decoded data from this stream goes into all those filters
* currently video and audio only */
InputFilter **filters;
int nb_filters; |
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int reinit_filters; |
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} InputStream;
typedef struct InputFile {
AVFormatContext *ctx;
int eof_reached; /* true if eof reached */ |
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int eagain; /* true if last read attempt returned EAGAIN */ |
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int ist_index; /* index of first stream in input_streams */ |
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int64_t ts_offset; |
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int nb_streams; /* number of stream that ffmpeg is aware of; may be different |
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from ctx.nb_streams if new streams appear during av_read_frame() */ |
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int nb_streams_warn; /* number of streams that the user was warned of */ |
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int rate_emu;
#if HAVE_PTHREADS
pthread_t thread; /* thread reading from this file */
int finished; /* the thread has exited */
int joined; /* the thread has been joined */
pthread_mutex_t fifo_lock; /* lock for access to fifo */
pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */
AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */
#endif
} InputFile;
typedef struct OutputStream {
int file_index; /* file index */
int index; /* stream index in the output file */
int source_index; /* InputStream index */
AVStream *st; /* stream in the output file */
int encoding_needed; /* true if encoding needed for this stream */
int frame_number;
/* input pts and corresponding output pts
for A/V sync */
struct InputStream *sync_ist; /* input stream to sync against */
int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
/* pts of the first frame encoded for this stream, used for limiting
* recording time */
int64_t first_pts; |
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/* dts of the last packet sent to the muxer */
int64_t last_mux_dts; |
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AVBitStreamFilterContext *bitstream_filters;
AVCodec *enc;
int64_t max_frames;
AVFrame *filtered_frame;
/* video only */
AVRational frame_rate;
int force_fps;
int top_field_first;
float frame_aspect_ratio;
/* forced key frames */
int64_t *forced_kf_pts;
int forced_kf_count;
int forced_kf_index;
char *forced_keyframes;
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/* audio only */
int audio_channels_map[SWR_CH_MAX]; /* list of the channels id to pick from the source stream */
int audio_channels_mapped; /* number of channels in audio_channels_map */
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char *logfile_prefix; |
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FILE *logfile;
OutputFilter *filter;
char *avfilter;
int64_t sws_flags; |
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int64_t swr_filter_type; |
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int64_t swr_dither_method;
double swr_dither_scale; |
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AVDictionary *opts; |
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int finished; /* no more packets should be written for this stream */ |
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int unavailable; /* true if the steram is unavailable (possibly temporarily) */ |
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int stream_copy;
const char *attachment_filename;
int copy_initial_nonkeyframes; |
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int copy_prior_start; |
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int keep_pix_fmt; |
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} OutputStream;
typedef struct OutputFile {
AVFormatContext *ctx;
AVDictionary *opts;
int ost_index; /* index of the first stream in output_streams */ |
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int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units
int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units
uint64_t limit_filesize; /* filesize limit expressed in bytes */ |
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int shortest; |
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} OutputFile;
extern InputStream **input_streams;
extern int nb_input_streams;
extern InputFile **input_files;
extern int nb_input_files;
extern OutputStream **output_streams;
extern int nb_output_streams;
extern OutputFile **output_files;
extern int nb_output_files;
extern FilterGraph **filtergraphs;
extern int nb_filtergraphs;
extern char *vstats_filename;
extern float audio_drift_threshold;
extern float dts_delta_threshold; |
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extern float dts_error_threshold; |
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extern int audio_volume;
extern int audio_sync_method;
extern int video_sync_method;
extern int do_benchmark; |
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extern int do_benchmark_all; |
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extern int do_deinterlace;
extern int do_hex_dump;
extern int do_pkt_dump;
extern int copy_ts;
extern int copy_tb; |
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extern int debug_ts; |
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extern int exit_on_error;
extern int print_stats;
extern int qp_hist; |
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extern int stdin_interaction;
extern int frame_bits_per_raw_sample;
extern AVIOContext *progress_avio; |
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extern const AVIOInterruptCB int_cb;
extern const OptionDef options[];
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void term_init(void);
void term_exit(void); |
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void reset_options(OptionsContext *o, int is_input);
void show_usage(void); |
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void opt_output_file(void *optctx, const char *filename);
void assert_avoptions(AVDictionary *m);
int guess_input_channel_layout(InputStream *ist);
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enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFormat target); |
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void choose_sample_fmt(AVStream *st, AVCodec *codec);
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int configure_filtergraph(FilterGraph *fg);
int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out); |
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int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost); |
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int ffmpeg_parse_options(int argc, char **argv); |
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#endif /* FFMPEG_H */ |