Android example source code file (MediaRecorderStressTest.java)

This example Android source code file (MediaRecorderStressTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, bufferedwriter, camera, exception, file, filewriter, io, largetest, media, mediaplayer, no, object, output_file_ext, photo, recordererrorcallback, sound, string, surfaceholder, test, total

The MediaRecorderStressTest.java Android example source code

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.mediaframeworktest.stress;


import com.android.mediaframeworktest.MediaFrameworkTest;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.Writer;

import android.hardware.Camera;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.os.Looper;
import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.LargeTest;
import android.util.Log;
import android.view.SurfaceHolder;
import com.android.mediaframeworktest.MediaRecorderStressTestRunner;

/**
 * Junit / Instrumentation test case for the media player api
 
 */  
public class MediaRecorderStressTest extends ActivityInstrumentationTestCase2<MediaFrameworkTest> {    
    
  
    private String TAG = "MediaRecorderStressTest";
    private MediaRecorder mRecorder;
    private Camera mCamera;
   
    private static final int NUMBER_OF_CAMERA_STRESS_LOOPS = 100;
    private static final int NUMBER_OF_RECORDER_STRESS_LOOPS = 100;
    private static final int NUMBER_OF_RECORDERANDPLAY_STRESS_LOOPS = 50;
    private static final int NUMBER_OF_SWTICHING_LOOPS_BW_CAMERA_AND_RECORDER = 200;
    private static final long WAIT_TIME_CAMERA_TEST = 3000;  // 3 second
    private static final long WAIT_TIME_RECORDER_TEST = 6000;  // 6 second
    private static final long WAIT_TIME_RECORD = 10000;  // 10 seconds
    private static final long WAIT_TIME_PLAYBACK = 6000;  // 6 second
    private static final String OUTPUT_FILE = "/sdcard/temp";
    private static final String OUTPUT_FILE_EXT = ".3gp";
    private static final String MEDIA_STRESS_OUTPUT =
        "/sdcard/mediaStressOutput.txt";
    private Looper mCameraLooper = null;
    private Looper mRecorderLooper = null;
    private final Object lock = new Object();
    private final Object recorderlock = new Object();
    private static int WAIT_FOR_COMMAND_TO_COMPLETE = 10000;  // Milliseconds.
    private final CameraErrorCallback mCameraErrorCallback = new CameraErrorCallback();
    private final RecorderErrorCallback mRecorderErrorCallback = new RecorderErrorCallback();

    public MediaRecorderStressTest() {
        super("com.android.mediaframeworktest", MediaFrameworkTest.class);
    }

    protected void setUp() throws Exception {
        getActivity();
        super.setUp();      
    }

    private final class CameraErrorCallback implements android.hardware.Camera.ErrorCallback {
        public void onError(int error, android.hardware.Camera camera) {
            if (error == android.hardware.Camera.CAMERA_ERROR_SERVER_DIED) {
                assertTrue("Camera test mediaserver died", false);
            }
        }
    }

    private final class RecorderErrorCallback implements MediaRecorder.OnErrorListener {
        public void onError(MediaRecorder mr, int what, int extra) {
            // fail the test case no matter what error come up
            assertTrue("mediaRecorder error", false);
        }
    }

    private void initializeCameraMessageLooper() {
        Log.v(TAG, "start looper");
        new Thread() {
            @Override
            public void run() {
                // Set up a looper to be used by camera.
                Looper.prepare();
                Log.v(TAG, "start loopRun");
                mCameraLooper = Looper.myLooper();
                mCamera = Camera.open();
                synchronized (lock) {
                    lock.notify();
                }
                Looper.loop();
                Log.v(TAG, "initializeMessageLooper: quit.");
            }
        }.start();
    }

    private void initializeRecorderMessageLooper() {
        Log.v(TAG, "start looper");
        new Thread() {
            @Override
            public void run() {
                Looper.prepare();
                Log.v(TAG, "start loopRun");
                mRecorderLooper = Looper.myLooper();
                mRecorder = new MediaRecorder();
                synchronized (recorderlock) {
                    recorderlock.notify();
                }
                Looper.loop();  // Blocks forever until Looper.quit() is called.
                Log.v(TAG, "initializeMessageLooper: quit.");
            }
        }.start();
    }

    /*
     * Terminates the message looper thread.
     */
    private void terminateCameraMessageLooper() {
        mCameraLooper.quit();
        try {
            Thread.sleep(1000);
        } catch (Exception e){
            Log.v(TAG, e.toString());
        }
        mCamera.release();
    }

    /*
     * Terminates the message looper thread.
     */
    private void terminateRecorderMessageLooper() {
        mRecorderLooper.quit();
        try {
            Thread.sleep(1000);
        } catch (Exception e){
            Log.v(TAG, e.toString());
        }
        mRecorder.release();
    }

    //Test case for stressing the camera preview.
    @LargeTest
    public void testStressCamera() throws Exception {
        SurfaceHolder mSurfaceHolder;
        mSurfaceHolder = MediaFrameworkTest.mSurfaceView.getHolder();
        File stressOutFile = new File(MEDIA_STRESS_OUTPUT);
        Writer output = new BufferedWriter(new FileWriter(stressOutFile, true));
        output.write("Camera start preview stress:\n");
        output.write("Total number of loops:" +
                NUMBER_OF_CAMERA_STRESS_LOOPS + "\n");
        try {
            Log.v(TAG, "Start preview");
            output.write("No of loop: ");

            for (int i = 0; i< NUMBER_OF_CAMERA_STRESS_LOOPS; i++){
                synchronized (lock) {
                    initializeCameraMessageLooper();
                    try {
                        lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE);
                    } catch(Exception e) {
                        Log.v(TAG, "wait was interrupted.");
                    }
                }
                mCamera.setErrorCallback(mCameraErrorCallback);
                mCamera.setPreviewDisplay(mSurfaceHolder);
                mCamera.startPreview();
                Thread.sleep(WAIT_TIME_CAMERA_TEST);
                mCamera.stopPreview();
                terminateCameraMessageLooper();
                output.write(" ," + i);
            }
        } catch (Exception e) {
            assertTrue("CameraStressTest", false);
            Log.v(TAG, e.toString());
        }
        output.write("\n\n");
        output.close();
    }

    //Test case for stressing the camera preview.
    @LargeTest
    public void testStressRecorder() throws Exception {
        String filename;
        SurfaceHolder mSurfaceHolder;
        mSurfaceHolder = MediaFrameworkTest.mSurfaceView.getHolder();
        File stressOutFile = new File(MEDIA_STRESS_OUTPUT);
        Writer output = new BufferedWriter(new FileWriter(stressOutFile, true));
        output.write("H263 video record- reset after prepare Stress test\n");
        output.write("Total number of loops:" +
                NUMBER_OF_RECORDER_STRESS_LOOPS + "\n");
        try {
            output.write("No of loop: ");
            Log.v(TAG, "Start preview");
            for (int i = 0; i < NUMBER_OF_RECORDER_STRESS_LOOPS; i++){
                synchronized (recorderlock) {
                    initializeRecorderMessageLooper();
                    try {
                        recorderlock.wait(WAIT_FOR_COMMAND_TO_COMPLETE);
                    } catch(Exception e) {
                        Log.v(TAG, "wait was interrupted.");
                    }
                }
                Log.v(TAG, "counter = " + i);
                filename = OUTPUT_FILE + i + OUTPUT_FILE_EXT;
                Log.v(TAG, filename);
                mRecorder.setOnErrorListener(mRecorderErrorCallback);
                mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
                mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                mRecorder.setOutputFile(filename);
                mRecorder.setVideoFrameRate(20);
                mRecorder.setVideoSize(176,144);
                Log.v(TAG, "setEncoder");
                mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
                mSurfaceHolder = MediaFrameworkTest.mSurfaceView.getHolder();
                Log.v(TAG, "setPreview");
                mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
                Log.v(TAG, "prepare");
                mRecorder.prepare();
                Log.v(TAG, "before release");
                Thread.sleep(WAIT_TIME_RECORDER_TEST);
                mRecorder.reset();
                terminateRecorderMessageLooper();
                output.write(", " + i);
            }
        } catch (Exception e) {
            assertTrue("Recorder Stress test", false);
            Log.v(TAG, e.toString());
        }
        output.write("\n\n");
        output.close();
    }

    //Stress test case for switching camera and video recorder preview.
    @LargeTest
    public void testStressCameraSwitchRecorder() throws Exception {
        String filename;
        SurfaceHolder mSurfaceHolder;
        mSurfaceHolder = MediaFrameworkTest.mSurfaceView.getHolder();
        File stressOutFile = new File(MEDIA_STRESS_OUTPUT);
        Writer output = new BufferedWriter(new FileWriter(stressOutFile, true));
        output.write("Camera and video recorder preview switching\n");
        output.write("Total number of loops:"
                + NUMBER_OF_SWTICHING_LOOPS_BW_CAMERA_AND_RECORDER + "\n");
        try {
            Log.v(TAG, "Start preview");
            output.write("No of loop: ");
            for (int i = 0; i < NUMBER_OF_SWTICHING_LOOPS_BW_CAMERA_AND_RECORDER; i++){
                synchronized (lock) {
                    initializeCameraMessageLooper();
                    try {
                        lock.wait(WAIT_FOR_COMMAND_TO_COMPLETE);
                    } catch(Exception e) {
                        Log.v(TAG, "wait was interrupted.");
                    }
                }
                mCamera.setErrorCallback(mCameraErrorCallback);
                mCamera.setPreviewDisplay(mSurfaceHolder);
                mCamera.startPreview();
                Thread.sleep(WAIT_TIME_CAMERA_TEST);
                mCamera.stopPreview();
                terminateCameraMessageLooper();
                mCamera = null;
                Log.v(TAG, "release camera");
                filename = OUTPUT_FILE + i + OUTPUT_FILE_EXT;
                Log.v(TAG, filename);
                synchronized (recorderlock) {
                    initializeRecorderMessageLooper();
                    try {
                        recorderlock.wait(WAIT_FOR_COMMAND_TO_COMPLETE);
                    } catch(Exception e) {
                        Log.v(TAG, "wait was interrupted.");
                    }
                }
                mRecorder.setOnErrorListener(mRecorderErrorCallback);
                mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
                mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                mRecorder.setOutputFile(filename);
                mRecorder.setVideoFrameRate(20);
                mRecorder.setVideoSize(176,144);
                Log.v(TAG, "Media recorder setEncoder");
                mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
                Log.v(TAG, "mediaRecorder setPreview");
                mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
                Log.v(TAG, "prepare");
                mRecorder.prepare();
                Log.v(TAG, "before release");
                Thread.sleep(WAIT_TIME_CAMERA_TEST);
                terminateRecorderMessageLooper();
                Log.v(TAG, "release video recorder");
                output.write(", " + i);
            }
        } catch (Exception e) {
            assertTrue("Camer and recorder switch mode", false);
                Log.v(TAG, e.toString());
        }
        output.write("\n\n");
        output.close();
    }

    public void validateRecordedVideo(String recorded_file) {
        try {
            MediaPlayer mp = new MediaPlayer();
            mp.setDataSource(recorded_file);
            mp.prepare();
            int duration = mp.getDuration();
            if (duration <= 0){
                assertTrue("stressRecordAndPlayback", false);
            }
        } catch (Exception e) {
            assertTrue("stressRecordAndPlayback", false);
        }
    }

    public void removeRecodedVideo(String filename){
        File video = new File(filename);
        Log.v(TAG, "remove recorded video " + filename);
        video.delete();
    }

    //Stress test case for record a video and play right away.
    @LargeTest
    public void testStressRecordVideoAndPlayback() throws Exception {
        int iterations = MediaRecorderStressTestRunner.mIterations;
        int video_encoder = MediaRecorderStressTestRunner.mVideoEncoder;
        int audio_encoder = MediaRecorderStressTestRunner.mAudioEncdoer;
        int frame_rate = MediaRecorderStressTestRunner.mFrameRate;
        int video_width = MediaRecorderStressTestRunner.mVideoWidth;
        int video_height = MediaRecorderStressTestRunner.mVideoHeight;
        int bit_rate = MediaRecorderStressTestRunner.mBitRate;
        boolean remove_video = MediaRecorderStressTestRunner.mRemoveVideo;
        int record_duration = MediaRecorderStressTestRunner.mDuration;

        String filename;
        SurfaceHolder mSurfaceHolder;
        mSurfaceHolder = MediaFrameworkTest.mSurfaceView.getHolder();
        File stressOutFile = new File(MEDIA_STRESS_OUTPUT);
        Writer output = new BufferedWriter(
                new FileWriter(stressOutFile, true));
        output.write("Video record and play back stress test:\n");
        output.write("Total number of loops:"
                + NUMBER_OF_RECORDERANDPLAY_STRESS_LOOPS + "\n");
        try {
            output.write("No of loop: ");
            for (int i = 0; i < iterations; i++){
                filename = OUTPUT_FILE + i + OUTPUT_FILE_EXT;
                Log.v(TAG, filename);
                synchronized (recorderlock) {
                    initializeRecorderMessageLooper();
                    try {
                        recorderlock.wait(WAIT_FOR_COMMAND_TO_COMPLETE);
                    } catch(Exception e) {
                        Log.v(TAG, "wait was interrupted.");
                    }
                }
                Log.v(TAG, "iterations : " + iterations);
                Log.v(TAG, "video_encoder : " + video_encoder);
                Log.v(TAG, "audio_encoder : " + audio_encoder);
                Log.v(TAG, "frame_rate : " + frame_rate);
                Log.v(TAG, "video_width : " + video_width);
                Log.v(TAG, "video_height : " + video_height);
                Log.v(TAG, "bit rate : " + bit_rate);
                Log.v(TAG, "record_duration : " + record_duration);

                mRecorder.setOnErrorListener(mRecorderErrorCallback);
                mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
                mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
                mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
                mRecorder.setOutputFile(filename);
                mRecorder.setVideoFrameRate(frame_rate);
                mRecorder.setVideoSize(video_width, video_height);
                mRecorder.setVideoEncoder(video_encoder);
                mRecorder.setAudioEncoder(audio_encoder);
                Log.v(TAG, "mediaRecorder setPreview");
                mRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());
                mRecorder.prepare();
                mRecorder.start();
                Thread.sleep(record_duration);
                Log.v(TAG, "Before stop");
                mRecorder.stop();
                terminateRecorderMessageLooper();
                //start the playback
                MediaPlayer mp = new MediaPlayer();
                mp.setDataSource(filename);
                mp.setDisplay(MediaFrameworkTest.mSurfaceView.getHolder());
                mp.prepare();
                mp.start();
                Thread.sleep(record_duration);
                mp.release();
                validateRecordedVideo(filename);
                if (remove_video) {
                    removeRecodedVideo(filename);
                }
                output.write(", " + i);
            }
        } catch (Exception e) {
            assertTrue("record and playback", false);
                Log.v(TAG, e.toString());
        }
        output.write("\n\n");
        output.close();
    }
}