fn audiounit_convert_channel_layout()

in src/backend/mod.rs [1073:1097]

• 18 lines of code
• 3 McCabe index (conditional complexity)

fn audiounit_convert_channel_layout(layout: &AudioChannelLayout) -> Result<Vec<mixer::Channel>> {
    if layout.mChannelLayoutTag != kAudioChannelLayoutTag_UseChannelDescriptions {
        // kAudioChannelLayoutTag_UseChannelBitmap
        // kAudioChannelLayoutTag_Mono
        // kAudioChannelLayoutTag_Stereo
        // ....
        cubeb_log!("Only handling UseChannelDescriptions for now.\n");
        return Err(Error::error());
    }

    let channel_descriptions = unsafe {
        slice::from_raw_parts(
            layout.mChannelDescriptions.as_ptr(),
            layout.mNumberChannelDescriptions as usize,
        )
    };

    let mut channels = Vec::with_capacity(layout.mNumberChannelDescriptions as usize);
    for description in channel_descriptions {
        let label = CAChannelLabel(description.mChannelLabel);
        channels.push(label.into());
    }

    Ok(channels)
}