public static extern void av_image_fill_max_pixsteps(int* max_pixsteps, int* max_pixstep_comps, AVPixFmtDescriptor* pixdesc);
public static extern AVPixelFormat av_pix_fmt_desc_get_id(AVPixFmtDescriptor* desc);
public static extern AVPixFmtDescriptor* av_pix_fmt_desc_next(AVPixFmtDescriptor* prev);
public static extern int av_get_padded_bits_per_pixel(AVPixFmtDescriptor* pixdesc);
public static extern void av_write_image_line(ushort* src, byte** data, int* linesize, AVPixFmtDescriptor* desc, int x, int y, int c, int w);
public static extern void av_read_image_line(ushort* dst, byte** data, int* linesize, AVPixFmtDescriptor* desc, int x, int y, int c, int w, int read_pal_component);