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|
use coreaudio_sys::*;
use std::fmt;
use std::os::raw::c_void;
use std::ptr;
pub fn audio_object_has_property(id: AudioObjectID, address: &AudioObjectPropertyAddress) -> bool {
unsafe { AudioObjectHasProperty(id, address) != 0 }
}
pub fn audio_object_get_property_data<T>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
size: *mut usize,
data: *mut T,
) -> OSStatus {
unsafe {
AudioObjectGetPropertyData(
id,
address,
0,
ptr::null(),
size as *mut UInt32,
data as *mut c_void,
)
}
}
pub fn audio_object_get_property_data_with_qualifier<T, Q>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
qualifier_size: usize,
qualifier_data: *const Q,
size: *mut usize,
data: *mut T,
) -> OSStatus {
unsafe {
AudioObjectGetPropertyData(
id,
address,
qualifier_size as UInt32,
qualifier_data as *const c_void,
size as *mut UInt32,
data as *mut c_void,
)
}
}
pub fn audio_object_get_property_data_size(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
size: *mut usize,
) -> OSStatus {
unsafe { AudioObjectGetPropertyDataSize(id, address, 0, ptr::null(), size as *mut UInt32) }
}
pub fn audio_object_get_property_data_size_with_qualifier<Q>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
qualifier_size: usize,
qualifier_data: *const Q,
size: *mut usize,
) -> OSStatus {
unsafe {
AudioObjectGetPropertyDataSize(
id,
address,
qualifier_size as UInt32,
qualifier_data as *const c_void,
size as *mut UInt32,
)
}
}
pub fn audio_object_set_property_data<T>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
size: usize,
data: *const T,
) -> OSStatus {
unsafe {
AudioObjectSetPropertyData(
id,
address,
0,
ptr::null(),
size as UInt32,
data as *const c_void,
)
}
}
#[allow(non_camel_case_types)]
pub type audio_object_property_listener_proc =
extern "C" fn(AudioObjectID, u32, *const AudioObjectPropertyAddress, *mut c_void) -> OSStatus;
pub fn audio_object_add_property_listener<T>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
listener: audio_object_property_listener_proc,
data: *mut T,
) -> OSStatus {
unsafe { AudioObjectAddPropertyListener(id, address, Some(listener), data as *mut c_void) }
}
pub fn audio_object_remove_property_listener<T>(
id: AudioObjectID,
address: &AudioObjectPropertyAddress,
listener: audio_object_property_listener_proc,
data: *mut T,
) -> OSStatus {
unsafe { AudioObjectRemovePropertyListener(id, address, Some(listener), data as *mut c_void) }
}
#[derive(Debug, PartialEq)]
pub enum PropertySelector {
DefaultOutputDevice,
DefaultInputDevice,
DeviceIsAlive,
DataSource,
Unknown,
}
impl From<AudioObjectPropertySelector> for PropertySelector {
fn from(p: AudioObjectPropertySelector) -> Self {
use coreaudio_sys as sys;
match p {
sys::kAudioHardwarePropertyDefaultOutputDevice => Self::DefaultOutputDevice,
sys::kAudioHardwarePropertyDefaultInputDevice => Self::DefaultInputDevice,
sys::kAudioDevicePropertyDeviceIsAlive => Self::DeviceIsAlive,
sys::kAudioDevicePropertyDataSource => Self::DataSource,
_ => Self::Unknown,
}
}
}
impl fmt::Display for PropertySelector {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = match self {
Self::DefaultOutputDevice => "kAudioHardwarePropertyDefaultOutputDevice",
Self::DefaultInputDevice => "kAudioHardwarePropertyDefaultInputDevice",
Self::DeviceIsAlive => "kAudioDevicePropertyDeviceIsAlive",
Self::DataSource => "kAudioDevicePropertyDataSource",
_ => "Unknown",
};
write!(f, "{}", s)
}
}
|
