Function CMVideoFormatDescriptionCreate 

pub unsafe extern "C-unwind" fn CMVideoFormatDescriptionCreate(
    allocator: Option<&CFAllocator>,
    codec_type: CMVideoCodecType,
    width: i32,
    height: i32,
    extensions: Option<&CFDictionary>,
    format_description_out: NonNull<*const CMVideoFormatDescription>,
) -> i32

Available on crate feature CMFormatDescription only.

Creates a format description for a video media stream.

The caller owns the returned CMFormatDescription, and must release it when done with it. All input parameters are copied (the extensions are deep-copied). The caller can deallocate them or re-use them after making this call.

Safety

• extensions generics must be of the correct type.
• format_description_out must be a valid pointer.