模仿chatgpt播放音频动画(Java)

package com.xiaowa.live.audiovisual.sdk.view; import android.content.Context; import android.content.res.TypedArray; import android.graphics.BlurMaskFilter; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Path; import android.graphics.RectF; import android.util.AttributeSet; import android.util.Log; import android.view.View; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import com.xiaowa.live.audiovisual.sdk.R; import com.xiaowa.live.audiovisual.sdk.utils.LogUtils; import com.xiaowa.live.audiovisual.sdk.visualize.VisualizeCallback; import com.xiaowa.live.audiovisual.sdk.visualize.VisualizerHelper; /** * Date: 2020/10/16 * Author: Yang * Describe: a view for visualizing audio, showing spectrum with different ui mode */ public abstract class AudioVisualizeView extends View implements VisualizeCallback { /** * the count of spectrum */ protected int mSpectrumCount; protected int mWaveThreshold; /** * the margin of adjoin spectrum */ protected float mItemMargin; /** * ratio of spectrum, between 0.0f - 2.0f */ protected float mSpectrumRatio; /** * the width of every spectrum */ protected float mStrokeWidth; /** * the color of drawing spectrum */ protected int mColor; /** * control enable of visualize */ protected boolean isVisualizationEnabled = true; /** * audio data transform by hypot */ protected float[] mRawAudioBytes; protected RectF mRect; protected Paint mPaint; protected Path mPath; protected float centerX, centerY; protected VisualizerHelper visualizerHelper; public AudioVisualizeView(Context context) { this(context, null); } public AudioVisualizeView(Context context, @Nullable AttributeSet attrs) { this(context, attrs, 0); } public AudioVisualizeView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); handleStyleable(context, attrs, defStyleAttr); init(); } private void handleStyleable(Context context, AttributeSet attrs, int defStyle) { TypedArray ta = context.getTheme().obtainStyledAttributes(attrs, R.styleable.AudioVisualizeView, defStyle, 0); try { mColor = ta.getColor(R.styleable.AudioVisualizeView_visualize_color, Color.WHITE); mSpectrumCount = ta.getInteger(R.styleable.AudioVisualizeView_visualize_count, 60) + 1; mWaveThreshold = ta.getInteger(R.styleable.AudioVisualizeView_visualize_threshold, 0); mSpectrumRatio = ta.getFloat(R.styleable.AudioVisualizeView_visualize_ratio, 1.0f); mItemMargin = ta.getDimension(R.styleable.AudioVisualizeView_visualize_item_margin, 12f); handleAttr(ta); } catch (Exception e) { e.printStackTrace(); } finally { ta.recycle(); } } protected void init() { mStrokeWidth = 5; mPaint = new Paint(); mPaint.setStrokeWidth(mStrokeWidth); mPaint.setColor(mColor); mPaint.setStrokeCap(Paint.Cap.ROUND); mPaint.setAntiAlias(true); mPaint.setMaskFilter(new BlurMaskFilter(5, BlurMaskFilter.Blur.SOLID)); mRect = new RectF(); mPath = new Path(); visualizerHelper = new VisualizerHelper(); visualizerHelper.setVisualizeCallback(this); visualizerHelper.setVisualCount(mSpectrumCount); } /** * 绑定 audioSessionId * * @param audioSessionId audioSessionId */ public void bindAudioSessionId(int audioSessionId) { try { visualizerHelper.setAudioSessionId(audioSessionId); } catch (Exception e) { LogUtils.e(e.getMessage()); } } @Override public void onFftDataCapture(float[] parseData) { if (!isVisualizationEnabled) { return; } mRawAudioBytes = parseData; // 刷新数据 postInvalidate(); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int finallyWidth; int finallyHeight; int wSpecMode = MeasureSpec.getMode(widthMeasureSpec); int wSpecSize = MeasureSpec.getSize(widthMeasureSpec); int hSpecMode = MeasureSpec.getMode(heightMeasureSpec); int hSpecSize = MeasureSpec.getSize(heightMeasureSpec); if (wSpecMode == MeasureSpec.EXACTLY) { finallyWidth = wSpecSize; } else { finallyWidth = 500; } if (hSpecMode == MeasureSpec.EXACTLY) { finallyHeight = hSpecSize; } else { finallyHeight = 500; } setMeasuredDimension(finallyWidth, finallyHeight); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super.onLayout(changed, left, top, right, bottom); mRect.set(0, 0, getWidth(), getHeight() - 50); centerX = mRect.width() / 2; centerY = mRect.height() / 2; onLayoutFinish(); } @Override protected void onDraw(@NonNull Canvas canvas) { super.onDraw(canvas); if (mRawAudioBytes == null) { return; } drawChild(canvas); } protected abstract void onLayoutFinish(); protected abstract void handleAttr(TypedArray typedArray); protected abstract void drawChild(Canvas canvas); public void setColor(int color) { this.mColor = color; this.mPaint.setColor(this.mColor); } /** * Enable Visualization */ public void show() { this.isVisualizationEnabled = true; } /** * Disable Visualization */ public void hide() { this.isVisualizationEnabled = false; } /** * release media player and visualizer */ public void release() { if (visualizerHelper != null) { visualizerHelper.release(); } } }