public void Start(EmulationContext context, IEventAggregator eventAggregator, EmulationMode mode)
{
_emulator = _emulatorRegistry.GetEmulator(context.EmulatedSystem, _handle);
IRomSource loader = null;
if (context.Game.RomPath.ToLower().EndsWith(".zip"))
{
loader = new ZipRomSource(context.Game.RomPath);
}
else
{
loader = new FileRomSource(context.Game.RomPath);
}
using (var romData = loader.GetRomData())
{
if (!_emulator.IsRomValid(romData))
return;
romData.Seek(0, System.IO.SeekOrigin.Begin);
_emulator.LoadRom(romData, null);
}
eventAggregator.Publish(new EmulatorStartingEvent(InstanceId, this, context.Game, mode));
while (_bus.HasMessages)
{
_bus.GetCommand().Execute(_emulator);
}
_emulator.Initialize(eventAggregator);
int pixelWidth, pixelHeight;
Wren.Core.PixelFormats requestedPixelFormat;
Int32 framePerSecond;
// assemble rendering pipeline
_emulator.GetSpecifications(out pixelWidth, out pixelHeight, out framePerSecond, out requestedPixelFormat);
var rSource = _renderingSourceFactory.Create(pixelWidth, pixelHeight, requestedPixelFormat);
eventAggregator.Publish(new RenderingSurfaceCreatedEvent(this.InstanceId, rSource.MemorySection, rSource.RenderingSurface, rSource.SurfaceInformation));
_emulator.SetRenderingSurface(rSource.RenderingSurface);
var input = _inputPipeline.BuildInputSource(context);
eventAggregator.Publish(new EmulatorStartedEvent(this.InstanceId));
FrameRateTimer fp = _frameRateTimerFactory.GetFrameRateTimer(framePerSecond);
fp.ScheduleAction(() =>
{
while (_bus.HasMessages)
{
_bus.GetCommand().Execute(_emulator);
}
_emulator.SetInput(input.GetCurrentInputState());
Boolean isRunning;
try
{
isRunning = _emulator.Run();
}
catch
{
isRunning = false;
}
eventAggregator.Publish(new FrameRenderedEvent(this.InstanceId));
if (!isRunning)
{
eventAggregator.Publish(new EmulatorQuitEvent(this.InstanceId));
input.Close();
}
return isRunning;
});
if (!fp.IsRunning)
{
fp.Start();
}
}