Function bloom_init_audio

native/ios/src/lib.rs:1724–1773

()

#[no_mangle]
pub extern "C" fn bloom_init_audio() {
    unsafe {
        let desc = AudioComponentDescription {
            component_type: K_AUDIO_UNIT_TYPE_OUTPUT,
            component_sub_type: K_AUDIO_UNIT_SUB_TYPE_REMOTE_IO,
            component_manufacturer: K_AUDIO_UNIT_MANUFACTURER_APPLE,
            component_flags: 0,
            component_flags_mask: 0,
        };

        let component = AudioComponentFindNext(std::ptr::null_mut(), &desc);
        if component.is_null() { return; }

        let mut unit: AudioUnit = std::ptr::null_mut();
        if AudioComponentInstanceNew(component, &mut unit) != 0 { return; }

        let stream_desc = AudioStreamBasicDescription {
            sample_rate: 44100.0,
            format_id: K_AUDIO_FORMAT_LINEAR_PCM,
            format_flags: K_AUDIO_FORMAT_FLAG_IS_FLOAT | K_AUDIO_FORMAT_FLAG_IS_PACKED,
            bytes_per_packet: 8,
            frames_per_packet: 1,
            bytes_per_frame: 8,
            channels_per_frame: 2,
            bits_per_channel: 32,
            reserved: 0,
        };

        AudioUnitSetProperty(
            unit, K_AUDIO_UNIT_PROPERTY_STREAM_FORMAT, K_AUDIO_UNIT_SCOPE_INPUT, 0,
            &stream_desc as *const _ as *const c_void,
            std::mem::size_of::<AudioStreamBasicDescription>() as u32,
        );

        let callback_struct = AURenderCallbackStruct {
            input_proc: audio_render_callback,
            input_proc_ref_con: std::ptr::null_mut(),
        };

        AudioUnitSetProperty(
            unit, K_AUDIO_UNIT_PROPERTY_SET_RENDER_CALLBACK, K_AUDIO_UNIT_SCOPE_INPUT, 0,
            &callback_struct as *const _ as *const c_void,
            std::mem::size_of::<AURenderCallbackStruct>() as u32,
        );

        AudioUnitInitialize(unit);
        AudioOutputUnitStart(unit);
        AUDIO_UNIT = Some(AudioUnitInstance { unit });
    }
}

#[no_mangle]
pub extern "C" fn bloom_close_audio() {