99 lines
2.7 KiB
C#
99 lines
2.7 KiB
C#
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using UnityEngine;
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using UnityEngine.UI;
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public class AudioWaveFormVisualization : MonoBehaviour
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{
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/// <summary>
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/// <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>AudioClip <20>ὫAudioClip<69>Ϲ<EFBFBD><CFB9>ص<EFBFBD><D8B5><EFBFBD>Ƶ<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>Ƶ<EFBFBD><EFBFBD>һ<EFBFBD><D2BB>Texture2D<32><44>
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/// </summary>
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/// <param name="_clip"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƶ</param>
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/// <returns>һ<><D2BB><EFBFBD><EFBFBD>ͼ</returns>
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public static Texture2D BakeAudioWaveform(AudioClip _clip)
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{
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int resolution = 20; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɲ<EFBFBD><C9B2><EFBFBD><EFBFBD>ߵĸ߶<C4B8>
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int width = 1920; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD>Texture2DͼƬ<CDBC>Ŀ<EFBFBD><C4BF><EFBFBD>
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int height = 200; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD>Texture2DͼƬ<CDBC>ĸ߶<C4B8>
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resolution = _clip.frequency / resolution;
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float[] samples = new float[_clip.samples * _clip.channels];
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_clip.GetData(samples, 0);
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float[] waveForm = new float[(samples.Length / resolution)];
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print("<22><><EFBFBD>Ʋ<EFBFBD><C6B2><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8><EFBFBD>Ϊ:"+waveForm.Length);
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float min = 0;
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float max = 0;
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bool inited = false;
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//<2F><>ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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for (int i = 0; i < waveForm.Length; i++)
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{
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waveForm[i] = 0;
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for (int j = 0; j < resolution; j++)
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{
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waveForm[i] += Mathf.Abs(samples[(i * resolution) + j]);
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}
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if (!inited)
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{
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min = waveForm[i];
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max = waveForm[i];
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inited = true;
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}
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else
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{
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if (waveForm[i] < min)
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{
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min = waveForm[i];
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}
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if (waveForm[i] > max)
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{
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max = waveForm[i];
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}
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}
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//waveForm[i] /= resolution;
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}
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//<2F><><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD>ɫ
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Color backgroundColor = new Color(0.5f,0.5f,0.5f,0f);
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Color waveformColor = Color.white;
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Color[] blank = new Color[width * height];
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Texture2D texture = new Texture2D(width, height);
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for (int i = 0; i < blank.Length; ++i)
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{
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blank[i] = backgroundColor;
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}
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texture.SetPixels(blank, 0);
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float xScale = (float)width / (float)waveForm.Length;//ȷ<><C8B7>ÿһ<C3BF><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><C4BF><EFBFBD>
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int tMid = (int)(height / 2.0f);
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float yScale = 1;
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if (max > tMid)
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{
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yScale = tMid / max;
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}
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for (int i = 0; i < waveForm.Length; ++i)
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{
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int x = (int)(i * xScale);
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int yOffset = (int)(waveForm[i] * yScale);
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int startY = tMid - yOffset;
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int endY = tMid + yOffset;
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for (int y = startY; y <= endY; ++y)
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{
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texture.SetPixel(x, y, waveformColor);
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}
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}
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texture.Apply();
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return texture;
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}
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}
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