public Cookie(
MamaSourceGroup mGroup,
MamaSourceStateChangeCallback mCallback,
IntPtr registrationHandle,
IntPtr mKey)
{
this.mGroup = mGroup;
this.mCallback = mCallback;
this.mHandle = registrationHandle;
this.mKey = mKey;
}
private void onStateChange(IntPtr sourceGroup, IntPtr topWeightSource, IntPtr closure)
{
int mKey = closure.ToInt32();
Cookie cookie = mRegistrations[mKey] as Cookie;
if (cookie != null && cookie.Key != 0)
{
MamaSourceStateChangeCallback mCallback = cookie.SourceStateChangeCallback;
if (mCallback != null)
{
mCallback.onStateChanged(this, new MamaSource(topWeightSource));
}
}
}
/// <summary>
/// The mCallback interface registered here will receive a mCallback whenever the
/// state of sources in the mGroup changes.
/// </summary>
/// <param name="mCallback">The mCallback object</param>
public StateChangedRegistration registerStateChangeCallback(MamaSourceStateChangeCallback mCallback)
{
#if MAMA_WRAPPERS_CHECK_ARGUMENTS
if (mCallback == null)
{
throw new ArgumentNullException("mCallback");
}
#endif // MAMA_WRAPPERS_CHECK_ARGUMENTS
EnsurePeerCreated();
IntPtr cookieKey = new IntPtr(mNextKey);
IntPtr regCookie = IntPtr.Zero;
int code = NativeMethods.mamaSourceGroup_registerStageChangeCallback(
nativeHandle,
new MamaSourceGroupOnStateChangeDelegate(onStateChange),
ref regCookie,
cookieKey);
CheckResultCode(code);
StateChangedRegistration reg = new Cookie(this, mCallback, regCookie, cookieKey);
GC.KeepAlive(mCallback);
mRegistrations[mNextKey] = reg;
++mNextKey;
return(reg);
}
public Cookie(
MamaSourceGroup mGroup,
MamaSourceStateChangeCallback mCallback,
IntPtr registrationHandle,
IntPtr mKey)
{
this.mGroup = mGroup;
this.mCallback = mCallback;
this.mHandle = registrationHandle;
this.mKey = mKey;
}
/// <summary>
/// The mCallback interface registered here will receive a mCallback whenever the
/// state of sources in the mGroup changes.
/// </summary>
/// <param name="mCallback">The mCallback object</param>
public StateChangedRegistration registerStateChangeCallback(MamaSourceStateChangeCallback mCallback)
{
#if MAMA_WRAPPERS_CHECK_ARGUMENTS
if (mCallback == null)
{
throw new ArgumentNullException("mCallback");
}
#endif // MAMA_WRAPPERS_CHECK_ARGUMENTS
EnsurePeerCreated();
IntPtr cookieKey = new IntPtr(mNextKey);
IntPtr regCookie = IntPtr.Zero;
int code = NativeMethods.mamaSourceGroup_registerStageChangeCallback(
nativeHandle,
new MamaSourceGroupOnStateChangeDelegate(onStateChange),
ref regCookie,
cookieKey);
CheckResultCode(code);
StateChangedRegistration reg = new Cookie(this, mCallback, regCookie, cookieKey);
GC.KeepAlive(mCallback);
mRegistrations[mNextKey] = reg;
++mNextKey;
return reg;
}
