int open_file(int rd,int wr);
int get_index(char *index_filename);
int close_file(void);
- int set_video_position(int64_t pos);
- int set_audio_position(int64_t pos);
int write_samples(double **buffer,int64_t len);
int write_frames(VFrame ***frames,int len);
int read_samples(double *buffer,int64_t len);