| private FireNotification ( NAudio.CoreAudioApi.AudioVolumeNotificationData notificationData ) : void | ||
| notificationData | NAudio.CoreAudioApi.AudioVolumeNotificationData | |
| 리턴 | void | |
public void OnNotify(IntPtr notifyData)
{
//Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the
//number of audio channels available we cannot just call PtrToStructure
//to get all data, thats why it is split up into two steps, first the static
//data is marshalled into the data structure, then with some IntPtr math the
//remaining floats are read from memory.
//
var data = MarshalHelpers.PtrToStructure <AudioVolumeNotificationDataStruct>(notifyData);
//Determine offset in structure of the first float
var offset = MarshalHelpers.OffsetOf <AudioVolumeNotificationDataStruct>("ChannelVolume");
//Determine offset in memory of the first float
var firstFloatPtr = (IntPtr)((long)notifyData + (long)offset);
var voldata = new float[data.nChannels];
//Read all floats from memory.
for (int i = 0; i < data.nChannels; i++)
{
voldata[i] = MarshalHelpers.PtrToStructure <float>(firstFloatPtr);
}
//Create combined structure and Fire Event in parent class.
var notificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted, data.fMasterVolume, voldata, data.guidEventContext);
parent.FireNotification(notificationData);
}
public void OnNotify(ref AudioVolumeNotificationDataStruct data)
//public int OnNotify(IntPtr NotifyData)
{
//Since AUDIO_VOLUME_NOTIFICATION_DATA is dynamic in length based on the
//number of audio channels available we cannot just call PtrToStructure
//to get all data, thats why it is split up into two steps, first the static
//data is marshalled into the data structure, then with some IntPtr math the
//remaining floats are read from memory.
//
//AudioVolumeNotificationDataStruct data = (AudioVolumeNotificationDataStruct)Marshal.PtrToStructure(NotifyData, typeof(AudioVolumeNotificationDataStruct));
//Determine offset in structure of the first float
//IntPtr Offset = Marshal.OffsetOf(typeof(AudioVolumeNotificationDataStruct), "ChannelVolume");
//Determine offset in memory of the first float
//IntPtr FirstFloatPtr = (IntPtr)((long)NotifyData + (long)Offset);
//float[] voldata = new float[data.nChannels];
//Read all floats from memory.
//for (int i = 0; i < data.nChannels; i++)
//{
// voldata[i] = data.fMasterVolume;
//}
//Create combined structure and Fire Event in parent class.
AudioVolumeNotificationData NotificationData = new AudioVolumeNotificationData(data.guidEventContext, data.bMuted, data.fMasterVolume);
_Parent.FireNotification(NotificationData);
}
