// Emulates until the next video frame has to be drawn. Returns the hit address.
public int AdvanceFrame(Joypad joypad = Joypad.None)
{
CurrentJoypad = joypad;
RunFor(SamplesPerFrame - BufferSamples);
CurrentJoypad = Joypad.None;
return(Libgambatte.gambatte_gethitinterruptaddress(Handle));
}
// Emulates 'runsamples' number of samples, or until a video frame has to be drawn. (1 sample = 2 cpu cycles)
public int RunFor(int runsamples)
{
int videoFrameDoneSampleCount = Libgambatte.gambatte_runfor(Handle, VideoBuffer, 160, AudioBuffer, ref runsamples);
int outsamples = videoFrameDoneSampleCount >= 0 ? BufferSamples + videoFrameDoneSampleCount : BufferSamples + runsamples;
BufferSamples += runsamples;
BufferSamples -= outsamples;
EmulatedSamples += (ulong)outsamples;
if (Scene != null)
{
Scene.OnAudioReady(outsamples);
// returns a positive value if a video frame needs to be drawn.
if (videoFrameDoneSampleCount >= 0)
{
Scene.Begin();
Scene.Render();
Scene.End();
}
}
return(Libgambatte.gambatte_gethitinterruptaddress(Handle));
}