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Android效能指標FPS獲取的JAVA實現

先貼程式碼,待會再編輯

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class FpsCount {
//取樣頻率,單位ms
    private static int WAITTIME = 1600;
    //取樣次數
    private static int RUNTIMES = 10;
    //gfxinfo用到的command
    private static String gfxCMD = "adb shell dumpsys gfxinfo com.huajiao"
; //需要監控的層 private static String layerName="SurfaceView"; private static String[] command = { "cmd", "/c", "adb shell dumpsys SurfaceFlinger --latency "+layerName}; //清空之前取樣的資料,防止統計重複的時間 private static String[] clearCommand = { "cmd", "/c", "adb shell dumpsys SurfaceFlinger --latency-clear"
}; private static String[] comd_getUpTime = { "cmd", "/c", "adb shell cat /proc/uptime"}; private static double MillSecds = 1000000.0; private static double NANOS = 1000000000.0; public static void main(String[] args) throws InterruptedException, ArrayIndexOutOfBoundsException { try { for
(int i = 0; i < RUNTIMES; i++) { if(layerName==null || "".equals(layerName)){ new RuntimeException("圖層獲取失敗!"); }else{ Runtime.getRuntime().exec(clearCommand); Thread.sleep(WAITTIME); getFps(layerName); } System.out.println("<================第"+(i+1)+"次測試完成!===============>"); } } catch (Exception e) { // TODO: handle exception } } //計算fps 通過SurfaceFlinger --latency獲取 @SuppressWarnings("unused") static void getFps(String layer){ BufferedReader br = null,br2 = null,br3 = null; java.text.DecimalFormat df1=new java.text.DecimalFormat("#.0"); java.text.DecimalFormat df2=new java.text.DecimalFormat("#.00"); java.text.DecimalFormat df3=new java.text.DecimalFormat("#.000"); double refreshPriod=0; //裝置重新整理週期 //這段是使用gfxinfo統計fps,可以刪掉 try { Process prt = Runtime.getRuntime().exec(gfxCMD); br3 = new BufferedReader(new InputStreamReader(prt.getInputStream())); String line; boolean flag=false; int frames2=0,jankCount=0,vsync_overtime=0; float countTime=0; while((line = br3.readLine()) != null){ if(line.length()>0){ if(line.contains("Execute")){ flag=true; continue; } if(line.contains("View hierarchy:")){ flag=false; continue; } if(flag){ if(!line.contains(":") && !line.contains("@")){ String[] timeArray = line.trim().split(" "); float oncetime=Float.parseFloat(timeArray[0])+Float.parseFloat(timeArray[1]) +Float.parseFloat(timeArray[2])+Float.parseFloat(timeArray[3]); frames2+=1; countTime=countTime+oncetime; if(oncetime > 16.67){ jankCount+=1; if(oncetime % 16.67 == 0){ vsync_overtime += oncetime/16.67 - 1; }else{ vsync_overtime += oncetime/16.67; } } } } } } if((frames2 + vsync_overtime)>0){ float ffps = frames2 * 60 / (frames2 + vsync_overtime); //System.out.println("gfxinfo方式 | 總幀數:"+frames2+" fps:"+ffps+" 跳幀數:"+jankCount); } //下面程式碼是利用制定層獲取fps的程式碼 //get device uptime String upTime=""; Process pt = Runtime.getRuntime().exec(comd_getUpTime); br2 = new BufferedReader(new InputStreamReader(pt.getInputStream())); String uptmeLine; while((uptmeLine = br2.readLine()) != null){ if(uptmeLine.length()>0){ upTime = uptmeLine.split(" ")[0]; } } Process p = Runtime.getRuntime().exec(command); br = new BufferedReader(new InputStreamReader(p.getInputStream())); String returnInfo = null; double b = 0; int frames = 0,jank=0; double totalCountPeriod=0; String beginRenderTime="0.0",endRenderTime="0.0"; double r=0; int count=1; while((returnInfo = br.readLine()) != null){ if(!"".equals(returnInfo) && returnInfo.length() > 0){ count++; int frameSize = returnInfo.split("\\s{1,}").length; if(frameSize==1){ refreshPriod = Double.parseDouble(returnInfo)/MillSecds; b = 0; frames = 0; r=refreshPriod; }else{ if(frameSize==3){ String[] timeStamps = returnInfo.split("\\s{1,}"); double t0 = Double.parseDouble(timeStamps[0]); double t1 = Double.parseDouble(timeStamps[1]); double t2 = Double.parseDouble(timeStamps[2]); if(t1 > 0 && !"9223372036854775807".equals(timeStamps[1])){ if(b==0){ b=t1; jank=0; }else{ double countPeriod = (t1-b)/MillSecds; //統計週期,大於500ms重新置為0 if(countPeriod>500){ if(frames>0){ System.out.println(totalCountPeriod/1000); System.out.println("SurfaceFlinger方式(超時了) | 開始取樣時間點:"+beginRenderTime+"s " + "|結束取樣時間點:"+df3.format(b/NANOS)+"s " + "|fps:"+df2.format(frames*1000/totalCountPeriod) + " |Frames:"+frames + " |單幀平均渲染時間:"+df2.format(totalCountPeriod/frames)+"ms"); } b=t1; frames=0; totalCountPeriod=0; jank=0; }else{ frames+=1; if(countPeriod>r){ totalCountPeriod+=countPeriod; if((t2-t0)/MillSecds > r){ jank+=1; } b=t1; }else{ totalCountPeriod+=r; b=Double.parseDouble(df1.format(b+r*MillSecds)); } } } if(frames==0){ beginRenderTime=df3.format(t1/NANOS); } } } } } } if(frames>0){ System.out.println("SurfaceFlinger方式 | 開始取樣時間點:"+beginRenderTime+"s " + "|結束取樣時間點:"+df3.format(b/NANOS)+"s " + "|fps:"+df2.format(frames*1000/totalCountPeriod) + " |Frames:"+frames + " |單幀平均渲染時間:"+df2.format(totalCountPeriod/frames)+"ms"); }else{ System.out.println("獲取的層不正確 or 當前沒有渲染操作,請拖動螢幕"); } } catch (Exception e) { e.printStackTrace(); }finally { if (br != null) { try { Runtime.getRuntime().exec(clearCommand); br.close(); } catch (Exception e) { e.printStackTrace(); } } } } }