Struct lodepng::ffi::Info

pub struct Info {
    pub compression_method: c_uint,
    pub filter_method: c_uint,
    pub interlace_method: c_uint,
    pub color: ColorMode,
    pub background_defined: c_uint,
    pub background_r: c_uint,
    pub background_g: c_uint,
    pub background_b: c_uint,
    pub time_defined: c_uint,
    pub time: Time,
    pub phys_defined: c_uint,
    pub phys_x: c_uint,
    pub phys_y: c_uint,
    pub phys_unit: c_uint,
    // some fields omitted
}

Information about the PNG image, except pixels, width and height

Fields

compression_method	compression method of the original file. Always 0.
filter_method	filter method of the original file
interlace_method	interlace method of the original file
color	color type and bits, palette and transparency of the PNG file
background_defined	suggested background color chunk (bKGD) This color uses the same color mode as the PNG (except alpha channel), which can be 1-bit to 16-bit. For greyscale PNGs, r, g and b will all 3 be set to the same. When encoding the encoder writes the red one. For palette PNGs: When decoding, the RGB value will be stored, not a palette index. But when encoding, specify the index of the palette in background_r, the other two are then ignored. The decoder does not use this background color to edit the color of pixels.
background_r	red component of suggested background color
background_g	green component of suggested background color
background_b	blue component of suggested background color
time_defined	time chunk (tIME)
time	set to 1 to make the encoder generate a tIME chunk
phys_defined	if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one
phys_x	pixels per unit in x direction
phys_y	pixels per unit in y direction
phys_unit	may be 0 (unknown unit) or 1 (metre)