T GetProperty <T> (AudioFileStreamProperty property)
{
int size, writable;
if (AudioFileStreamGetPropertyInfo(handle, property, out size, out writable) != 0)
{
return(default(T));
}
var buffer = Marshal.AllocHGlobal(size);
if (buffer == IntPtr.Zero)
{
return(default(T));
}
try
{
var r = AudioFileStreamGetProperty(handle, property, ref size, buffer);
if (r == 0)
{
return((T)Marshal.PtrToStructure(buffer, typeof(T)));
}
return(default(T));
}
finally
{
Marshal.FreeHGlobal(buffer);
}
}
public IntPtr GetProperty(AudioFileStreamProperty property, out int size)
{
bool writable;
LastError = AudioFileStreamGetPropertyInfo(handle, property, out size, out writable);
if (LastError != 0)
{
return(IntPtr.Zero);
}
var buffer = Marshal.AllocHGlobal(size);
if (buffer == IntPtr.Zero)
{
return(IntPtr.Zero);
}
LastError = AudioFileStreamGetProperty(handle, property, ref size, buffer);
if (LastError == 0)
{
return(buffer);
}
Marshal.FreeHGlobal(buffer);
return(IntPtr.Zero);
}
unsafe T?GetProperty <T> (AudioFileStreamProperty property) where T : struct
{
int size;
bool writable;
LastError = AudioFileStreamGetPropertyInfo(handle, property, out size, out writable);
if (LastError != 0)
{
return(null);
}
var buffer = Marshal.AllocHGlobal(size);
if (buffer == IntPtr.Zero)
{
return(null);
}
try {
LastError = AudioFileStreamGetProperty(handle, property, ref size, buffer);
if (LastError == 0)
{
return((T)Marshal.PtrToStructure(buffer, typeof(T)));
}
return(null);
} finally {
Marshal.FreeHGlobal(buffer);
}
}
unsafe T?GetProperty <T> (AudioFileStreamProperty property) where T : struct
{
int size, writable;
LastError = AudioFileStreamGetPropertyInfo(handle, property, out size, out writable);
if (LastError != 0)
{
return(null);
}
var buffer = Marshal.AllocHGlobal(size);
if (buffer == IntPtr.Zero)
{
return(null);
}
try {
LastError = AudioFileStreamGetProperty(handle, property, ref size, buffer);
if (LastError == 0)
{
T result = *(T *)buffer;
return(result);
}
return(null);
} finally {
Marshal.FreeHGlobal(buffer);
}
}
public bool GetProperty(AudioFileStreamProperty property, ref int dataSize, IntPtr outPropertyData)
{
if (outPropertyData == IntPtr.Zero)
{
throw new ArgumentNullException("outPropertyData");
}
return(AudioFileStreamGetProperty(handle, property, ref dataSize, outPropertyData) == 0);
}
public bool GetProperty(AudioFileStreamProperty property, ref int dataSize, IntPtr outPropertyData)
{
if (outPropertyData == IntPtr.Zero)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(outPropertyData));
}
return(AudioFileStreamGetProperty(handle, property, ref dataSize, outPropertyData) == 0);
}
public bool SetProperty(AudioFileStreamProperty property, int dataSize, IntPtr propertyData)
{
if (propertyData == IntPtr.Zero)
{
ObjCRuntime.ThrowHelper.ThrowArgumentNullException(nameof(propertyData));
}
LastError = AudioFileStreamSetProperty(handle, property, dataSize, propertyData);
return(LastError == 0);
}
public bool SetProperty(AudioFileStreamProperty property, int dataSize, IntPtr propertyData)
{
if (propertyData == IntPtr.Zero)
{
throw new ArgumentNullException("propertyData");
}
LastError = AudioFileStreamSetProperty(handle, property, dataSize, propertyData);
return(LastError == 0);
}
protected virtual void OnPropertyFound(AudioFileStreamProperty propertyID, ref AudioFileStreamPropertyFlag ioFlags)
{
var p = PropertyFound;
if (p != null)
{
var pf = new PropertyFoundEventArgs(propertyID, ioFlags);
p(this, pf);
ioFlags = pf.Flags;
}
}
int GetInt(AudioFileStreamProperty property)
{
unsafe {
int val = 0;
int size = 4;
if (AudioFileStreamGetProperty(handle, property, ref size, (IntPtr)(&val)) == 0)
{
return(val);
}
return(0);
}
}
double GetDouble(AudioFileStreamProperty property)
{
unsafe {
double val = 0;
int size = 8;
if (AudioFileStreamGetProperty(handle, property, ref size, (IntPtr)(&val)) == 0)
{
return(val);
}
return(0);
}
}
long GetLong(AudioFileStreamProperty property)
{
unsafe {
long val = 0;
int size = 8;
if (AudioFileStreamGetProperty(handle, property, ref size, (IntPtr)(&val)) == 0)
{
return(val);
}
return(0);
}
}
public PropertyFoundEventArgs(AudioFileStreamProperty propertyID, AudioFileStreamPropertyFlag ioFlags)
{
Property = propertyID;
Flags = ioFlags;
}
extern static AudioFileStreamStatus AudioFileStreamSetProperty(
AudioFileStreamID inAudioFileStream,
AudioFileStreamProperty inPropertyID,
int inPropertyDataSize,
IntPtr inPropertyData);
public bool SetProperty(AudioFileStreamProperty property, int dataSize, IntPtr propertyData)
{
LastError = AudioFileStreamSetProperty(handle, property, dataSize, propertyData);
return(LastError == 0);
}
extern static OSStatus AudioFileStreamGetPropertyInfo(
AudioFileStreamID inAudioFileStream,
AudioFileStreamProperty inPropertyID,
out int outPropertyDataSize,
out int isWritable);
public bool GetProperty(AudioFileStreamProperty property, ref int dataSize, IntPtr outPropertyData)
{
return(AudioFileStreamGetProperty(handle, property, ref dataSize, outPropertyData) == 0);
}
extern static AudioFileStreamStatus AudioFileStreamGetProperty(
AudioFileStreamID inAudioFileStream,
AudioFileStreamProperty inPropertyID,
ref int ioPropertyDataSize,
IntPtr outPropertyData);
extern static AudioFileStreamStatus AudioFileStreamGetPropertyInfo(
AudioFileStreamID inAudioFileStream,
AudioFileStreamProperty inPropertyID,
out int outPropertyDataSize,
[MarshalAs(UnmanagedType.I1)] out bool isWritable);
static void PropertyListener(IntPtr clientData, AudioFileStreamID audioFileStream, AudioFileStreamProperty propertyID, ref AudioFileStreamPropertyFlag ioFlags)
{
GCHandle handle = GCHandle.FromIntPtr(clientData);
var afs = handle.Target as AudioFileStream;
afs.OnPropertyFound(propertyID, ref ioFlags);
}
public bool SetProperty(AudioFileStreamProperty property, int dataSize, IntPtr propertyData)
{
return(AudioFileStreamSetProperty(handle, property, dataSize, propertyData) == 0);
}
