package?com.cz.wisdomcity.entity;

import?java.io.InputStream;
import?android.graphics.Canvas;
import?android.graphics.Color;
import?android.graphics.Paint;
import?android.graphics.Rect;
import?android.util.Log;
import?android.view.SurfaceView;
/**
?*?測試用?已無用
?*?@author?Dean
?*
?*/
public?class?ClsWaveDiagram?{

	private?boolean?isRecording?=?false;//?線程控制標記
	private?InputStream?btInput?=?null;//?藍牙數據輸入流
	/**
	?*?X軸縮小的比例
	?*/
	public?int?rateX?=?1;?
	/**
	?*?Y軸縮小的比例
	?*/
	public?int?rateY?=?1;
	/**
	?*?Y軸基線
	?*/
	public?int?baseLine?=?0;

	/**
	?*?初始化
	?*/
	public?ClsWaveDiagram（InputStream?btInput?int?rateX?int?rateY
			int?baseLine）?{
		this.btInput?=?btInput;
		this.rateX?=?rateX;
		this.rateY?=?rateY;
		this.baseLine?=?baseLine;
	}

	/**
	?*?開始
	?*?
	?*?@param?recBufSize
	?*????????????AudioRecord的MinBufferSize
	?*/
	public?void?Start（SurfaceView?sfv?Paint?mPaint?int?wait）?{
		isRecording?=?true;
		new?DrawThread（sfv?mPaint?wait）.start（）;//?開始繪制線程
	}

	/**
	?*?停止
	?*/
	public?void?Stop（）?{
		isRecording?=?false;
	}

	/**
	?*?負責繪制inBuf中的數據
	?*?
	?*?@author?GV
	?*?
	?*/
	class?DrawThread?extends?Thread?{

		private?int?oldX?=?0;//?上次繪制的X坐標
		private?int?oldY?=?0;//?上次繪制的Y坐標
		private?SurfaceView?sfv;//?畫板
		private?int?X_index?=?0;//?當前畫圖所在屏幕X軸的坐標
		private?Paint?mPaint;//?畫筆
		private?int?wait?=?50;//?線程等待時間

		public?DrawThread（SurfaceView?sfv?Paint?mPaint?int?wait）?{
			this.sfv?=?sfv;
			this.mPaint?=?mPaint;
			this.wait?=?wait;
		}

		@Override
		public?void?run（）?{
			while?（isRecording）?{
				try?{

					byte[]?temp?=?new?byte[1024];

					int?len?=?btInput.read（temp）;
					Log.e（“available“?String.valueOf（len））;
					if?（len?>?0）?{
						byte[]?btBuf?=?new?byte[len];
						System.arraycopy（temp?0?btBuf?0?btBuf.length）;
						SimpleDraw（X_index?btBuf?rateX?rateY?baseLine）;//?把緩沖區數據畫出來
						X_index?=?X_index?+?（btBuf.length/rateX）?-?1;//?這里-1可以減少空隙
						if?（X_index?>?sfv.getHeight（））?{
							X_index?=?0;
						}
					}
					Thread.sleep（wait）;//?延時一定時間緩沖數據
				}?catch?（Exception?e）?{
					//?TODO?Auto-generated?catch?block
					e.printStackTrace（）;
				}

			}
		}

		/**
		?*?繪制指定區域
		?*?
		?*?@param?start
		?*????????????X軸開始的位置（全屏）
		?*?@param?inputBuf
		?*????????????緩沖區
		?*?@param?rateX
		?*????????????X軸數據縮小的比例
		?*?@param?rateY
		?*????????????Y軸數據縮小的比例
		?*?@param?baseLine
		?*????????????Y軸基線
		?*/
		void?SimpleDraw（int?start?byte[]?inputBuf?int?rateX?int?rateY
				int?baseLine）?{
			if?（start?==?0）
				oldX?=?0;
			//?根據需要縮小X軸比例
			byte[]?buffer?=?new?byte[inputBuf.length?/?rateX];
			for?（int?i?=?0?ii?=?0;?i?				buffer[i]?=?inputBuf[ii];

			Canvas?canvas?=?sfv.getHolder（）.lockCanvas（
					new?Rect（0?start?sfv.getWidth（）?start?+?buffer.length））;//?關鍵:獲取畫布
			canvas.drawColor（Color.BLACK）;//?清除背景

			for?（int?i?=?0;?i?