Function JxlDecoderSetCoalescing 

pub unsafe extern "C-unwind" fn JxlDecoderSetCoalescing(
    dec: *mut JxlDecoder,
    coalescing: JxlBool,
) -> JxlDecoderStatus

Enables or disables coalescing of zero-duration frames. By default, frames are returned with coalescing enabled, i.e. all frames have the image dimensions, and are blended if needed. When coalescing is disabled, frames can have arbitrary dimensions, a non-zero crop offset, and blending is not performed. For display, coalescing is recommended. For loading a multi-layer still image as separate layers (as opposed to the merged image), coalescing has to be disabled.

Parameters

• dec: decoder object
• coalescing: JxlBool::True to enable coalescing (default), JxlBool::False to disable it.

Returns

• JxlDecoderStatus::Success if no error, JxlDecoderStatus::Error otherwise.