Function JxlDecoderImageOutBufferSize 

pub unsafe extern "C-unwind" fn JxlDecoderImageOutBufferSize(
    dec: *const JxlDecoder,
    format: *const JxlPixelFormat,
    size: *mut usize,
) -> JxlDecoderStatus

Returns the minimum size in bytes of the image output pixel buffer for the given format. This is the buffer for JxlDecoderSetImageOutBuffer. Requires that the basic image information is available in the decoder in the case of coalescing enabled (default). In case coalescing is disabled, this can only be called after the JxlDecoderStatus::Frame event occurs. In that case, it will return the size required to store the possibly cropped frame (which can be larger or smaller than the image dimensions).

Parameters

• dec: decoder object
• format: format of the pixels.
• size: output value, buffer size in bytes

Returns

• JxlDecoderStatus::Success on success, JxlDecoderStatus::Error on error, such as information not available yet.