Function opj_read_header 

pub unsafe extern "C" fn opj_read_header(
    p_stream: *mut opj_stream_t,
    p_codec: *mut opj_codec_t,
    p_image: *mut *mut opj_image_t,
) -> OPJ_BOOL

Decodes an image header.

Arguments

• p_stream - the jpeg2000 stream.
• p_codec - the jpeg2000 codec to read.
• p_image - the image structure initialized with the characteristics of encoded image.

Returns

true if the main header of the codestream and the JP2 header is correctly read.