107 lines
3.1 KiB
C#
107 lines
3.1 KiB
C#
using MAME.Core.run_interface;
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using System;
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using UnityEngine;
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public class UniSoundPlayer : MonoBehaviour, ISoundPlayer
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{
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public int mWrite_position = 0;
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public int mPlay_position =0;
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[SerializeField]
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private AudioSource m_as;
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private RingBuffer<float> _buffer = new RingBuffer<float>(4096);
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private TimeSpan lastElapsed;
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public double audioFPS { get; private set; }
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float lastData = 0;
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public void Initialize()
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{
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AudioClip dummy = AudioClip.Create("dummy", 1, 1, AudioSettings.outputSampleRate, false);
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dummy.SetData(new float[] { 1,1 }, 0);
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m_as.clip = dummy;
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m_as.loop = true;
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m_as.spatialBlend = 1;
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m_as.Play();
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}
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void OnAudioFilterRead(float[] data, int channels)
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{
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if (!UMAME.bStart) return;
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int step = channels;
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mWrite_position = 0;
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for (int i = 0; i < data.Length; i += step)
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{
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float rawFloat = lastData;
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if (_buffer.TryRead(out float rawData))
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{
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rawFloat = rawData;
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mWrite_position++;
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}
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data[i] = rawFloat;
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for (int fill = 1; fill < step; fill++)
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data[i + fill] = rawFloat;
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lastData = rawFloat;
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}
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}
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public void SubmitSamples(byte[] buffer, int samples_a)
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{
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var current = UMAME.sw.Elapsed;
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var delta = current - lastElapsed;
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lastElapsed = current;
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audioFPS = 1d / delta.TotalSeconds;
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float[] floatdata = ConvertByteArrayToFloatArray(buffer, samples_a,2);
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for (int i = 0; i < samples_a; i++)
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{
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_buffer.Write(floatdata[i]);
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}
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}
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public float[] ConvertByteArrayToFloatArray(byte[] bytes, int sampleRate, int channels)
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{
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int sampleCount = bytes.Length / (channels * 2); // 16位，所以每个样本2字节
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float[] floatArray = new float[sampleCount * channels];
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for (int i = 0; i < sampleCount; i++)
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{
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// 读取左右声道
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short left = BitConverter.ToInt16(bytes, i * channels * 2);
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short right = BitConverter.ToInt16(bytes, i * channels * 2 + 2);
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//short left = (short)BitConverter.ToUInt16(bytes, i * channels * 2);
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//short right = (short)BitConverter.ToUInt16(bytes, i * channels * 2 + 2);
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// 转换为-1.0到1.0的浮点数
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floatArray[i] = left / 32767.0f; // 32767是16位整数的最大值
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floatArray[i + 1] = right / 32767.0f;
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}
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return floatArray;
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}
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public void BufferWirte(int Off, byte[] Data)
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{
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//var current = sw.Elapsed;
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//var delta = current - lastElapsed;
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//lastElapsed = current;
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//FPS = 1d / delta.TotalSeconds;
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//for (int i = Off; i < Data.Length; i++)
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//{
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// _buffer.Write(Data[i]);
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//}
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}
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public void GetCurrentPosition(out int play_position, out int write_position)
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{
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play_position = mPlay_position;
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write_position = mWrite_position;
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}
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public void SetVolume(int Vol)
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{
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}
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}
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