AxibugEmuOnline/AxibugEmuOnline.Client/Assets/Script/NesEmulator/AudioProvider.cs

52 lines
1.4 KiB
C#

using UnityEngine;
using VirtualNes.Core;
namespace AxibugEmuOnline.Client
{
public class AudioProvider : MonoBehaviour
{
public NesEmulator NesEmu { get; set; }
[SerializeField]
private AudioSource m_as;
private SoundBuffer _buffer = new SoundBuffer(4096);
public void Start()
{
var dummy = AudioClip.Create("dummy", 1, 1, AudioSettings.outputSampleRate, false);
dummy.SetData(new float[] { 1 }, 0);
m_as.clip = dummy; //just to let unity play the audiosource
m_as.loop = true;
m_as.spatialBlend = 1;
m_as.Play();
}
void OnAudioFilterRead(float[] data, int channels)
{
int step = channels;
if (NesEmu == null || NesEmu.NesCore == null) return;
ProcessSound(NesEmu.NesCore, (uint)(data.Length / channels));
for (int i = 0; i < data.Length; i += step)
{
float rawFloat = 0;
byte rawData;
if (_buffer.TryRead(out rawData))
rawFloat = rawData / 255f;
data[i] = rawFloat;
for (int fill = 1; fill < step; fill++)
data[i + fill] = rawFloat;
}
}
void ProcessSound(NES nes, uint feedCount)
{
nes.apu.Process(_buffer, feedCount);
}
}
}