CMVideoFormatDescriptionCreateForImageBuffer

objc2_core_media

Function CMVideoFormatDescriptionCreateForImageBuffer 

Source 
pub unsafe extern "C-unwind" fn CMVideoFormatDescriptionCreateForImageBuffer(
    allocator: Option<&CFAllocator>,
    image_buffer: &CVImageBuffer,
    format_description_out: NonNull<*const CMVideoFormatDescription>,
) -> i32
Available on crate features CMFormatDescription and objc2-core-video only.
Expand description

Creates a format description for a video media stream contained in CVImageBuffers of the type provided.

This convenience function is equivalent to:

CMVideoFormatDescriptionCreate( allocator, ( CVPixelBufferGetTypeID() == CFGetTypeID( imageBuffer ) ? CVPixelBufferGetPixelFormatType( imageBuffer ) : 0, width of image, height of image, extensions );

where extensions is a CFDictionary of attachments to image buffer with keys specified by CMVideoFormatDescriptionGetExtensionKeysCommonWithImageBuffers, and also kCMFormatDescriptionExtension_BytesPerRow if applicable.

ยงSafety

format_description_out must be a valid pointer.