// GetIndirectLayerImageMap(s64 width, s64 height, u64 handle, nn::applet::AppletResourceUserId, pid) -> (s64, s64, buffer<bytes, 0x46>)
public ResultCode GetIndirectLayerImageMap(ServiceCtx context)
{
// The size of the layer buffer should be an aligned multiple of width * height
// because it was created using GetIndirectLayerImageRequiredMemoryInfo as a guide.
long layerWidth = context.RequestData.ReadInt64();
long layerHeight = context.RequestData.ReadInt64();
long layerHandle = context.RequestData.ReadInt64();
ulong layerBuffPosition = context.Request.ReceiveBuff[0].Position;
ulong layerBuffSize = context.Request.ReceiveBuff[0].Size;
// Get the pitch of the layer that is necessary to render correctly.
ulong size = GetA8B8G8R8LayerSize((int)layerWidth, (int)layerHeight, out int pitch, out _);
Debug.Assert(layerBuffSize == size);
// Get the applet associated with the handle.
object appletObject = context.Device.System.AppletState.IndirectLayerHandles.GetData((int)layerHandle);
if (appletObject == null)
{
Logger.Error?.Print(LogClass.ServiceVi, $"Indirect layer handle {layerHandle} does not match any applet");
return(ResultCode.Success);
}
Debug.Assert(appletObject is IApplet);
IApplet applet = appletObject as IApplet;
Span <byte> graphics = applet.GetGraphicsA8B8G8R8((int)layerWidth, (int)layerHeight, pitch, (int)layerBuffSize);
if (graphics == null)
{
Logger.Error?.Print(LogClass.ServiceVi, $"Applet returned no graphics for indirect layer handle {layerHandle}");
return(ResultCode.Success);
}
context.Memory.Write((ulong)layerBuffPosition, graphics);
context.ResponseData.Write(layerWidth);
context.ResponseData.Write(layerHeight);
return(ResultCode.Success);
}
