0,0 → 1,453 |
/* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* 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. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* 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 |
* License along with FFmpeg; if not, write to the Free Software |
* 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" |
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#include <stdint.h> |
#include <stdio.h> |
#include <signal.h> |
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#if HAVE_PTHREADS |
#include <pthread.h> |
#endif |
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#include "cmdutils.h" |
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#include "libavformat/avformat.h" |
#include "libavformat/avio.h" |
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#include "libavcodec/avcodec.h" |
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#include "libavfilter/avfilter.h" |
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#include "libavutil/avutil.h" |
#include "libavutil/dict.h" |
#include "libavutil/eval.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 |
#define VSYNC_VSCFR 0xfe |
#define VSYNC_DROP 0xff |
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#define MAX_STREAMS 1024 /* arbitrary sanity check value */ |
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/* select an input stream for an output stream */ |
typedef struct StreamMap { |
int disabled; /* 1 is this mapping is disabled by a negative map */ |
int file_index; |
int stream_index; |
int sync_file_index; |
int sync_stream_index; |
char *linklabel; /* name of an output link, for mapping lavfi outputs */ |
} 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 { |
OptionGroup *g; |
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/* input/output options */ |
int64_t start_time; |
const char *format; |
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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; |
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/* input options */ |
int64_t input_ts_offset; |
int rate_emu; |
int accurate_seek; |
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SpecifierOpt *ts_scale; |
int nb_ts_scale; |
SpecifierOpt *dump_attachment; |
int nb_dump_attachment; |
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/* output options */ |
StreamMap *stream_maps; |
int nb_stream_maps; |
AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */ |
int nb_audio_channel_maps; /* number of (valid) -map_channel settings */ |
int metadata_global_manual; |
int metadata_streams_manual; |
int metadata_chapters_manual; |
const char **attachments; |
int nb_attachments; |
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int chapters_input_file; |
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int64_t recording_time; |
int64_t stop_time; |
uint64_t limit_filesize; |
float mux_preload; |
float mux_max_delay; |
int shortest; |
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int video_disable; |
int audio_disable; |
int subtitle_disable; |
int data_disable; |
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/* indexed by output file stream index */ |
int *streamid_map; |
int nb_streamid_map; |
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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; |
SpecifierOpt *copy_prior_start; |
int nb_copy_prior_start; |
SpecifierOpt *filters; |
int nb_filters; |
SpecifierOpt *filter_scripts; |
int nb_filter_scripts; |
SpecifierOpt *reinit_filters; |
int nb_reinit_filters; |
SpecifierOpt *fix_sub_duration; |
int nb_fix_sub_duration; |
SpecifierOpt *canvas_sizes; |
int nb_canvas_sizes; |
SpecifierOpt *pass; |
int nb_pass; |
SpecifierOpt *passlogfiles; |
int nb_passlogfiles; |
SpecifierOpt *guess_layout_max; |
int nb_guess_layout_max; |
SpecifierOpt *apad; |
int nb_apad; |
} OptionsContext; |
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typedef struct InputFilter { |
AVFilterContext *filter; |
struct InputStream *ist; |
struct FilterGraph *graph; |
uint8_t *name; |
} InputFilter; |
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typedef struct OutputFilter { |
AVFilterContext *filter; |
struct OutputStream *ost; |
struct FilterGraph *graph; |
uint8_t *name; |
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/* temporary storage until stream maps are processed */ |
AVFilterInOut *out_tmp; |
} OutputFilter; |
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typedef struct FilterGraph { |
int index; |
const char *graph_desc; |
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AVFilterGraph *graph; |
int reconfiguration; |
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InputFilter **inputs; |
int nb_inputs; |
OutputFilter **outputs; |
int nb_outputs; |
} FilterGraph; |
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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; |
AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */ |
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int64_t start; /* time when read started */ |
/* predicted dts of the next packet read for this stream or (when there are |
* several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */ |
int64_t next_dts; |
int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units) |
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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 */ |
int saw_first_ts; |
int showed_multi_packet_warning; |
AVDictionary *opts; |
AVRational framerate; /* framerate forced with -r */ |
int top_field_first; |
int guess_layout_max; |
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int resample_height; |
int resample_width; |
int resample_pix_fmt; |
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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; |
int64_t end_pts; |
AVFrame *frame; |
int w, h; |
} sub2video; |
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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; |
} InputStream; |
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typedef struct InputFile { |
AVFormatContext *ctx; |
int eof_reached; /* true if eof reached */ |
int eagain; /* true if last read attempt returned EAGAIN */ |
int ist_index; /* index of first stream in input_streams */ |
int64_t input_ts_offset; |
int64_t ts_offset; |
int64_t last_ts; |
int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */ |
int64_t recording_time; |
int nb_streams; /* number of stream that ffmpeg is aware of; may be different |
from ctx.nb_streams if new streams appear during av_read_frame() */ |
int nb_streams_warn; /* number of streams that the user was warned of */ |
int rate_emu; |
int accurate_seek; |
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#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; |
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enum forced_keyframes_const { |
FKF_N, |
FKF_N_FORCED, |
FKF_PREV_FORCED_N, |
FKF_PREV_FORCED_T, |
FKF_T, |
FKF_NB |
}; |
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extern const char *const forced_keyframes_const_names[]; |
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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; |
/* dts of the last packet sent to the muxer */ |
int64_t last_mux_dts; |
AVBitStreamFilterContext *bitstream_filters; |
AVCodec *enc; |
int64_t max_frames; |
AVFrame *filtered_frame; |
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/* video only */ |
AVRational frame_rate; |
int force_fps; |
int top_field_first; |
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AVRational frame_aspect_ratio; |
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/* forced key frames */ |
int64_t *forced_kf_pts; |
int forced_kf_count; |
int forced_kf_index; |
char *forced_keyframes; |
AVExpr *forced_keyframes_pexpr; |
double forced_keyframes_expr_const_values[FKF_NB]; |
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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; |
FILE *logfile; |
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OutputFilter *filter; |
char *avfilter; |
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int64_t sws_flags; |
AVDictionary *opts; |
AVDictionary *swr_opts; |
AVDictionary *resample_opts; |
char *apad; |
int finished; /* no more packets should be written for this stream */ |
int unavailable; /* true if the steram is unavailable (possibly temporarily) */ |
int stream_copy; |
const char *attachment_filename; |
int copy_initial_nonkeyframes; |
int copy_prior_start; |
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int keep_pix_fmt; |
} OutputStream; |
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typedef struct OutputFile { |
AVFormatContext *ctx; |
AVDictionary *opts; |
int ost_index; /* index of the first stream in output_streams */ |
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; |
} OutputFile; |
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extern InputStream **input_streams; |
extern int nb_input_streams; |
extern InputFile **input_files; |
extern int nb_input_files; |
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extern OutputStream **output_streams; |
extern int nb_output_streams; |
extern OutputFile **output_files; |
extern int nb_output_files; |
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extern FilterGraph **filtergraphs; |
extern int nb_filtergraphs; |
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extern char *vstats_filename; |
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extern float audio_drift_threshold; |
extern float dts_delta_threshold; |
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; |
extern int do_benchmark_all; |
extern int do_deinterlace; |
extern int do_hex_dump; |
extern int do_pkt_dump; |
extern int copy_ts; |
extern int copy_tb; |
extern int debug_ts; |
extern int exit_on_error; |
extern int print_stats; |
extern int qp_hist; |
extern int stdin_interaction; |
extern int frame_bits_per_raw_sample; |
extern AVIOContext *progress_avio; |
extern float max_error_rate; |
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extern const AVIOInterruptCB int_cb; |
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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); |
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void assert_avoptions(AVDictionary *m); |
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int guess_input_channel_layout(InputStream *ist); |
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enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFormat target); |
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); |
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 */ |