yading@10: /* yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: #ifndef FFMPEG_H yading@10: #define FFMPEG_H yading@10: yading@10: #include "config.h" yading@10: yading@10: #include yading@10: #include yading@10: #include yading@10: yading@10: #if HAVE_PTHREADS yading@10: #include yading@10: #endif yading@10: yading@10: #include "cmdutils.h" yading@10: yading@10: #include "libavformat/avformat.h" yading@10: #include "libavformat/avio.h" yading@10: yading@10: #include "libavcodec/avcodec.h" yading@10: yading@10: #include "libavfilter/avfilter.h" yading@10: yading@10: #include "libavutil/avutil.h" yading@10: #include "libavutil/dict.h" yading@10: #include "libavutil/eval.h" yading@10: #include "libavutil/fifo.h" yading@10: #include "libavutil/pixfmt.h" yading@10: #include "libavutil/rational.h" yading@10: yading@10: #include "libswresample/swresample.h" yading@10: yading@10: #define VSYNC_AUTO -1 yading@10: #define VSYNC_PASSTHROUGH 0 yading@10: #define VSYNC_CFR 1 yading@10: #define VSYNC_VFR 2 yading@10: #define VSYNC_DROP 0xff yading@10: yading@10: #define MAX_STREAMS 1024 /* arbitrary sanity check value */ yading@10: yading@10: /* select an input stream for an output stream */ yading@10: typedef struct StreamMap { yading@10: int disabled; /* 1 is this mapping is disabled by a negative map */ yading@10: int file_index; yading@10: int stream_index; yading@10: int sync_file_index; yading@10: int sync_stream_index; yading@10: char *linklabel; /* name of an output link, for mapping lavfi outputs */ yading@10: } StreamMap; yading@10: yading@10: typedef struct { yading@10: int file_idx, stream_idx, channel_idx; // input yading@10: int ofile_idx, ostream_idx; // output yading@10: } AudioChannelMap; yading@10: yading@10: typedef struct OptionsContext { yading@10: OptionGroup *g; yading@10: yading@10: /* input/output options */ yading@10: int64_t start_time; yading@10: const char *format; yading@10: yading@10: SpecifierOpt *codec_names; yading@10: int nb_codec_names; yading@10: SpecifierOpt *audio_channels; yading@10: int nb_audio_channels; yading@10: SpecifierOpt *audio_sample_rate; yading@10: int nb_audio_sample_rate; yading@10: SpecifierOpt *frame_rates; yading@10: int nb_frame_rates; yading@10: SpecifierOpt *frame_sizes; yading@10: int nb_frame_sizes; yading@10: SpecifierOpt *frame_pix_fmts; yading@10: int nb_frame_pix_fmts; yading@10: yading@10: /* input options */ yading@10: int64_t input_ts_offset; yading@10: int rate_emu; yading@10: yading@10: SpecifierOpt *ts_scale; yading@10: int nb_ts_scale; yading@10: SpecifierOpt *dump_attachment; yading@10: int nb_dump_attachment; yading@10: yading@10: /* output options */ yading@10: StreamMap *stream_maps; yading@10: int nb_stream_maps; yading@10: AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */ yading@10: int nb_audio_channel_maps; /* number of (valid) -map_channel settings */ yading@10: int metadata_global_manual; yading@10: int metadata_streams_manual; yading@10: int metadata_chapters_manual; yading@10: const char **attachments; yading@10: int nb_attachments; yading@10: yading@10: int chapters_input_file; yading@10: yading@10: int64_t recording_time; yading@10: int64_t stop_time; yading@10: uint64_t limit_filesize; yading@10: float mux_preload; yading@10: float mux_max_delay; yading@10: int shortest; yading@10: yading@10: int video_disable; yading@10: int audio_disable; yading@10: int subtitle_disable; yading@10: int data_disable; yading@10: yading@10: /* indexed by output file stream index */ yading@10: int *streamid_map; yading@10: int nb_streamid_map; yading@10: yading@10: SpecifierOpt *metadata; yading@10: int nb_metadata; yading@10: SpecifierOpt *max_frames; yading@10: int nb_max_frames; yading@10: SpecifierOpt *bitstream_filters; yading@10: int nb_bitstream_filters; yading@10: SpecifierOpt *codec_tags; yading@10: int nb_codec_tags; yading@10: SpecifierOpt *sample_fmts; yading@10: int nb_sample_fmts; yading@10: SpecifierOpt *qscale; yading@10: int nb_qscale; yading@10: SpecifierOpt *forced_key_frames; yading@10: int nb_forced_key_frames; yading@10: SpecifierOpt *force_fps; yading@10: int nb_force_fps; yading@10: SpecifierOpt *frame_aspect_ratios; yading@10: int nb_frame_aspect_ratios; yading@10: SpecifierOpt *rc_overrides; yading@10: int nb_rc_overrides; yading@10: SpecifierOpt *intra_matrices; yading@10: int nb_intra_matrices; yading@10: SpecifierOpt *inter_matrices; yading@10: int nb_inter_matrices; yading@10: SpecifierOpt *top_field_first; yading@10: int nb_top_field_first; yading@10: SpecifierOpt *metadata_map; yading@10: int nb_metadata_map; yading@10: SpecifierOpt *presets; yading@10: int nb_presets; yading@10: SpecifierOpt *copy_initial_nonkeyframes; yading@10: int nb_copy_initial_nonkeyframes; yading@10: SpecifierOpt *copy_prior_start; yading@10: int nb_copy_prior_start; yading@10: SpecifierOpt *filters; yading@10: int nb_filters; yading@10: SpecifierOpt *filter_scripts; yading@10: int nb_filter_scripts; yading@10: SpecifierOpt *reinit_filters; yading@10: int nb_reinit_filters; yading@10: SpecifierOpt *fix_sub_duration; yading@10: int nb_fix_sub_duration; yading@10: SpecifierOpt *canvas_sizes; yading@10: int nb_canvas_sizes; yading@10: SpecifierOpt *pass; yading@10: int nb_pass; yading@10: SpecifierOpt *passlogfiles; yading@10: int nb_passlogfiles; yading@10: SpecifierOpt *guess_layout_max; yading@10: int nb_guess_layout_max; yading@10: } OptionsContext; yading@10: yading@10: typedef struct InputFilter { yading@10: AVFilterContext *filter; yading@10: struct InputStream *ist; yading@10: struct FilterGraph *graph; yading@10: uint8_t *name; yading@10: } InputFilter; yading@10: yading@10: typedef struct OutputFilter { yading@10: AVFilterContext *filter; yading@10: struct OutputStream *ost; yading@10: struct FilterGraph *graph; yading@10: uint8_t *name; yading@10: yading@10: /* temporary storage until stream maps are processed */ yading@10: AVFilterInOut *out_tmp; yading@10: } OutputFilter; yading@10: yading@10: typedef struct FilterGraph { yading@10: int index; yading@10: const char *graph_desc; yading@10: yading@10: AVFilterGraph *graph; yading@10: int reconfiguration; yading@10: yading@10: InputFilter **inputs; yading@10: int nb_inputs; yading@10: OutputFilter **outputs; yading@10: int nb_outputs; yading@10: } FilterGraph; yading@10: yading@10: typedef struct InputStream { yading@10: int file_index; yading@10: AVStream *st; yading@10: int discard; /* true if stream data should be discarded */ yading@10: int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */ yading@10: AVCodec *dec; yading@10: AVFrame *decoded_frame; yading@10: AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */ yading@10: yading@10: int64_t start; /* time when read started */ yading@10: /* predicted dts of the next packet read for this stream or (when there are yading@10: * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */ yading@10: int64_t next_dts; yading@10: int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units) yading@10: yading@10: int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units) yading@10: int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units) yading@10: int wrap_correction_done; yading@10: yading@10: int64_t filter_in_rescale_delta_last; yading@10: yading@10: double ts_scale; yading@10: int is_start; /* is 1 at the start and after a discontinuity */ yading@10: int saw_first_ts; yading@10: int showed_multi_packet_warning; yading@10: AVDictionary *opts; yading@10: AVRational framerate; /* framerate forced with -r */ yading@10: int top_field_first; yading@10: int guess_layout_max; yading@10: yading@10: int resample_height; yading@10: int resample_width; yading@10: int resample_pix_fmt; yading@10: yading@10: int resample_sample_fmt; yading@10: int resample_sample_rate; yading@10: int resample_channels; yading@10: uint64_t resample_channel_layout; yading@10: yading@10: int fix_sub_duration; yading@10: struct { /* previous decoded subtitle and related variables */ yading@10: int got_output; yading@10: int ret; yading@10: AVSubtitle subtitle; yading@10: } prev_sub; yading@10: yading@10: struct sub2video { yading@10: int64_t last_pts; yading@10: int64_t end_pts; yading@10: AVFrame *frame; yading@10: int w, h; yading@10: } sub2video; yading@10: yading@10: int dr1; yading@10: yading@10: /* decoded data from this stream goes into all those filters yading@10: * currently video and audio only */ yading@10: InputFilter **filters; yading@10: int nb_filters; yading@10: yading@10: int reinit_filters; yading@10: } InputStream; yading@10: yading@10: typedef struct InputFile { yading@10: AVFormatContext *ctx; yading@10: int eof_reached; /* true if eof reached */ yading@10: int eagain; /* true if last read attempt returned EAGAIN */ yading@10: int ist_index; /* index of first stream in input_streams */ yading@10: int64_t ts_offset; yading@10: int64_t last_ts; yading@10: int nb_streams; /* number of stream that ffmpeg is aware of; may be different yading@10: from ctx.nb_streams if new streams appear during av_read_frame() */ yading@10: int nb_streams_warn; /* number of streams that the user was warned of */ yading@10: int rate_emu; yading@10: yading@10: #if HAVE_PTHREADS yading@10: pthread_t thread; /* thread reading from this file */ yading@10: int finished; /* the thread has exited */ yading@10: int joined; /* the thread has been joined */ yading@10: pthread_mutex_t fifo_lock; /* lock for access to fifo */ yading@10: pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */ yading@10: AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */ yading@10: #endif yading@10: } InputFile; yading@10: yading@10: enum forced_keyframes_const { yading@10: FKF_N, yading@10: FKF_N_FORCED, yading@10: FKF_PREV_FORCED_N, yading@10: FKF_PREV_FORCED_T, yading@10: FKF_T, yading@10: FKF_NB yading@10: }; yading@10: yading@10: extern const char *const forced_keyframes_const_names[]; yading@10: yading@10: typedef struct OutputStream { yading@10: int file_index; /* file index */ yading@10: int index; /* stream index in the output file */ yading@10: int source_index; /* InputStream index */ yading@10: AVStream *st; /* stream in the output file */ yading@10: int encoding_needed; /* true if encoding needed for this stream */ yading@10: int frame_number; yading@10: /* input pts and corresponding output pts yading@10: for A/V sync */ yading@10: struct InputStream *sync_ist; /* input stream to sync against */ yading@10: int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number yading@10: /* pts of the first frame encoded for this stream, used for limiting yading@10: * recording time */ yading@10: int64_t first_pts; yading@10: AVBitStreamFilterContext *bitstream_filters; yading@10: AVCodec *enc; yading@10: int64_t max_frames; yading@10: AVFrame *filtered_frame; yading@10: yading@10: /* video only */ yading@10: AVRational frame_rate; yading@10: int force_fps; yading@10: int top_field_first; yading@10: yading@10: AVRational frame_aspect_ratio; yading@10: yading@10: /* forced key frames */ yading@10: int64_t *forced_kf_pts; yading@10: int forced_kf_count; yading@10: int forced_kf_index; yading@10: char *forced_keyframes; yading@10: AVExpr *forced_keyframes_pexpr; yading@10: double forced_keyframes_expr_const_values[FKF_NB]; yading@10: yading@10: /* audio only */ yading@10: int audio_channels_map[SWR_CH_MAX]; /* list of the channels id to pick from the source stream */ yading@10: int audio_channels_mapped; /* number of channels in audio_channels_map */ yading@10: yading@10: char *logfile_prefix; yading@10: FILE *logfile; yading@10: yading@10: OutputFilter *filter; yading@10: char *avfilter; yading@10: yading@10: int64_t sws_flags; yading@10: AVDictionary *opts; yading@10: AVDictionary *swr_opts; yading@10: AVDictionary *resample_opts; yading@10: int finished; /* no more packets should be written for this stream */ yading@10: int unavailable; /* true if the steram is unavailable (possibly temporarily) */ yading@10: int stream_copy; yading@10: const char *attachment_filename; yading@10: int copy_initial_nonkeyframes; yading@10: int copy_prior_start; yading@10: yading@10: int keep_pix_fmt; yading@10: } OutputStream; yading@10: yading@10: typedef struct OutputFile { yading@10: AVFormatContext *ctx; yading@10: AVDictionary *opts; yading@10: int ost_index; /* index of the first stream in output_streams */ yading@10: int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units yading@10: int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units yading@10: uint64_t limit_filesize; /* filesize limit expressed in bytes */ yading@10: yading@10: int shortest; yading@10: } OutputFile; yading@10: yading@10: extern InputStream **input_streams; yading@10: extern int nb_input_streams; yading@10: extern InputFile **input_files; yading@10: extern int nb_input_files; yading@10: yading@10: extern OutputStream **output_streams; yading@10: extern int nb_output_streams; yading@10: extern OutputFile **output_files; yading@10: extern int nb_output_files; yading@10: yading@10: extern FilterGraph **filtergraphs; yading@10: extern int nb_filtergraphs; yading@10: yading@10: extern char *vstats_filename; yading@10: yading@10: extern float audio_drift_threshold; yading@10: extern float dts_delta_threshold; yading@10: extern float dts_error_threshold; yading@10: yading@10: extern int audio_volume; yading@10: extern int audio_sync_method; yading@10: extern int video_sync_method; yading@10: extern int do_benchmark; yading@10: extern int do_benchmark_all; yading@10: extern int do_deinterlace; yading@10: extern int do_hex_dump; yading@10: extern int do_pkt_dump; yading@10: extern int copy_ts; yading@10: extern int copy_tb; yading@10: extern int debug_ts; yading@10: extern int exit_on_error; yading@10: extern int print_stats; yading@10: extern int qp_hist; yading@10: extern int stdin_interaction; yading@10: extern int frame_bits_per_raw_sample; yading@10: extern AVIOContext *progress_avio; yading@10: yading@10: extern const AVIOInterruptCB int_cb; yading@10: yading@10: extern const OptionDef options[]; yading@10: yading@10: void term_init(void); yading@10: void term_exit(void); yading@10: yading@10: void reset_options(OptionsContext *o, int is_input); yading@10: void show_usage(void); yading@10: yading@10: void opt_output_file(void *optctx, const char *filename); yading@10: yading@10: void assert_avoptions(AVDictionary *m); yading@10: yading@10: int guess_input_channel_layout(InputStream *ist); yading@10: yading@10: enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFormat target); yading@10: void choose_sample_fmt(AVStream *st, AVCodec *codec); yading@10: yading@10: int configure_filtergraph(FilterGraph *fg); yading@10: int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out); yading@10: int ist_in_filtergraph(FilterGraph *fg, InputStream *ist); yading@10: FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost); yading@10: yading@10: int ffmpeg_parse_options(int argc, char **argv); yading@10: yading@10: #endif /* FFMPEG_H */