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/*

 * 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

 */

#ifndef FFMPEG_H

#define FFMPEG_H

#include "config.h"

#include 

#include 

#include 

#if HAVE_PTHREADS

#include 

#endif

#include "cmdutils.h"

#include "libavformat/avformat.h"

#include "libavformat/avio.h"

#include "libavcodec/avcodec.h"

#include "libavfilter/avfilter.h"

#include "libavutil/avutil.h"

#include "libavutil/dict.h"

#include "libavutil/eval.h"

#include "libavutil/fifo.h"

#include "libavutil/pixfmt.h"

#include "libavutil/rational.h"

#include "libswresample/swresample.h"

#define VSYNC_AUTO       -1

#define VSYNC_PASSTHROUGH 0

#define VSYNC_CFR         1

#define VSYNC_VFR         2

#define VSYNC_VSCFR       0xfe

#define VSYNC_DROP        0xff

#define MAX_STREAMS 1024    /* arbitrary sanity check value */

/* 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;

typedef struct {

    int  file_idx,  stream_idx,  channel_idx; // input

    int ofile_idx, ostream_idx;               // output

} AudioChannelMap;

typedef struct OptionsContext {

    OptionGroup *g;

    /* 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;

    int accurate_seek;

    SpecifierOpt *ts_scale;

    int        nb_ts_scale;

    SpecifierOpt *dump_attachment;

    int        nb_dump_attachment;

    /* 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;

    int chapters_input_file;

    int64_t recording_time;

    int64_t stop_time;

    uint64_t limit_filesize;

    float mux_preload;

    float mux_max_delay;

    int shortest;

    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;

    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;

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;

    int reconfiguration;

    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;

    AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */

    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)

    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;

    int64_t filter_in_rescale_delta_last;

    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;

    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;

    int fix_sub_duration;

    struct { /* previous decoded subtitle and related variables */

        int got_output;

        int ret;

        AVSubtitle subtitle;

    } prev_sub;

    struct sub2video {

        int64_t last_pts;

        int64_t end_pts;

        AVFrame *frame;

        int w, h;

    } sub2video;

    int dr1;

    /* decoded data from this stream goes into all those filters

     * currently video and audio only */

    InputFilter **filters;

    int        nb_filters;

    int reinit_filters;

} InputStream;

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;

#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;

enum forced_keyframes_const {

    FKF_N,

    FKF_N_FORCED,

    FKF_PREV_FORCED_N,

    FKF_PREV_FORCED_T,

    FKF_T,

    FKF_NB

};

extern const char *const forced_keyframes_const_names[];

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;

    /* video only */

    AVRational frame_rate;

    int force_fps;

    int top_field_first;

    AVRational frame_aspect_ratio;

    /* 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];

    /* 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 */

    char *logfile_prefix;

    FILE *logfile;

    OutputFilter *filter;

    char *avfilter;

    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;

    int keep_pix_fmt;

} OutputStream;

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 */

    int shortest;

} 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;

extern float dts_error_threshold;

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;

extern const AVIOInterruptCB int_cb;

extern const OptionDef options[];

void term_init(void);

void term_exit(void);

void reset_options(OptionsContext *o, int is_input);

void show_usage(void);

void opt_output_file(void *optctx, const char *filename);

void assert_avoptions(AVDictionary *m);

int guess_input_channel_layout(InputStream *ist);

enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum AVPixelFormat target);

void choose_sample_fmt(AVStream *st, AVCodec *codec);

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);

int ffmpeg_parse_options(int argc, char **argv);

#endif /* FFMPEG_H */