/// <summary>
/// Allocates the static pointer to the CallbacksNative passed in. This is used to pass it into the CAPI.
/// </summary>
/// <returns>The pointer to the native callbacks.</returns>
public static IntPtr AllocateSystemCallbacks()
{
if (SystemCallbacks != IntPtr.Zero)
{
MLPluginLog.Error("MLMusicServiceNativeBindings.CallbacksNative.AllocateCallbacksPointer failed to allocate new callbacks pointer. Reason: Static callback pointer was already allocated, please call MLMusicServiceNativeBindings.CallbacksNative.DeallocateCallbacksPointer and try again");
return(IntPtr.Zero);
}
SystemCallbacks = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(CallbacksNative)));
CallbacksNative callbacks = CallbacksNative.Create();
callbacks.OnPlaybackStateChange = HandlePlaybackStateChange;
callbacks.OnRepeatStateChange = HandleRepeatStateChange;
callbacks.OnShuffleStateChange = HandleShuffleStateChange;
callbacks.OnMetadataChange = HandleMetadataChange;
callbacks.OnPositionChange = HandlePositionChange;
callbacks.OnError = HandleError;
callbacks.OnStatusChange = HandleStatusChange;
callbacks.OnVolumeChange = HandleVolumeChange;
Marshal.StructureToPtr(callbacks, SystemCallbacks, false);
return(SystemCallbacks);
}