Android Open Source - droid-aegis Media Controller

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Back to project page droid-aegis.

License

The source code is released under:

MIT License

Java Source Code

package andi.cctv.app;
/*w  ww.  j a v  a  2  s . c  o m*/
import java.io.FileDescriptor;
import java.io.IOException;

import android.annotation.TargetApi;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.media.MediaRecorder;
import android.media.MediaRecorder.OnErrorListener;
import android.os.Build;
import android.util.Log;
import android.view.SurfaceHolder;

public class MediaController implements OnErrorListener{
  private static final int   State_Unknown = 0;
  private static final int  State_Ready   = 1;
  private static final int  State_Play    = 2;
  private static final int  State_Stop    = 3;
  
  private static final String mRecTag = "cctv";
  
  private int        mCurState;
  /* Need to have camera and mediarecord objects */
  private Camera      mCam;
  private MediaRecorder   mRec;
  private Thread      mThread;
  private SurfaceHolder  mSurfaceHolder;
  private FileDescriptor  mFd;
  private int        mWidth, mHeight;
  
  @Deprecated
  public MediaController(SurfaceHolder  mHolder, FileDescriptor mFileD) {
    mCurState = State_Unknown;
    mSurfaceHolder = mHolder;
    mFd = mFileD;
    mWidth = 176;
    mHeight = 144;
    Log.d(mRecTag, "Creating thread: SurfaceHolder");
    mThread = new ThreadHandler();
    mThread.start();
  }

  public MediaController (SurfaceHolder mHolder) {
    mCurState = State_Unknown;
    mSurfaceHolder = mHolder;

  }
  
  public void setFileDescriptor (FileDescriptor mFileDesc) {
    mFd = mFileDesc;
  }
  
  public void setPreviewSize (int width, int height) {
    mWidth = width;
    mHeight = height;
  }
  
  public void startRec () {
    mThread = new ThreadHandler();
    mThread.start();
  }

  public void stopMedia() {
    Log.d(mRecTag, "StopMedia called");
    mCurState = State_Stop;
    synchronized (mThread) {
      mThread.notifyAll();
    }
  }

  @TargetApi(Build.VERSION_CODES.HONEYCOMB)
  private boolean InitialiseMedia () {
    boolean initSuccess = false;
    /*Log.d(mRecTag, "Camera Open");
    int n = Camera.getNumberOfCameras();
    Log.d(mRecTag, "Cameras = " + n);
    CameraInfo[] mInfo = new CameraInfo[n];
    for (int i = 0; i < n; i++) {
      mInfo[i] = new CameraInfo();
      Log.d(mRecTag, "Calling getinfo");
      Camera.getCameraInfo(i, mInfo[i]);
      Log.d(mRecTag, "facing " + mInfo[i].facing);
      Log.d(mRecTag, "orientation " + mInfo[i].orientation);
    }*/
    /* Try opening the main camera */
    Log.d(mRecTag, "Trying BACK camera");
    mCam = Camera.open(CameraInfo.CAMERA_FACING_BACK);
//    mCam = Camera.open();
    if (null == mCam) {
      Log.d(mRecTag, "Trying FRONT Camera");
      mCam = Camera.open(CameraInfo.CAMERA_FACING_FRONT);
    }
    if (null != mCam) {
      Log.d(mRecTag, "Camera Open Success");
//      CamcorderProfile  myProfile = CamcorderProfile.get(CameraInfo.CAMERA_FACING_BACK, CamcorderProfile.QUALITY_QCIF);
      Camera.Parameters params = mCam.getParameters();
      params.setPreviewSize(mWidth, mHeight);
      mCam.setParameters(params);
//      params.getPreviewSize();
      Log.d(mRecTag, "Surface start");
      try {
        Log.d(mRecTag, "SetPreview: SurfaceHolder");
        mCam.setPreviewDisplay(mSurfaceHolder);
      } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
      mCam.startPreview();
      Log.d(mRecTag, "Started Preview");
      initSuccess = true;
    }
    else {
      Log.d(mRecTag, "Camera Open FAILED for both");
    }
    return initSuccess;
  }
  
  private void CleanupMedia () {
    Log.d(mRecTag, "Stop + release Camera");
    mCam.stopPreview();
    mCam.release();
  }
  
  private void setUpRecorder () {
    Log.d(mRecTag, "Initialising of record");
    mRec = new MediaRecorder();
    mCam.unlock();
    mRec.setCamera(mCam);
    mRec.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    mRec.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
    mRec.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    mRec.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
    mRec.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    mRec.setVideoFrameRate(15);
//    mRec.setVideoSize( , );
    mRec.setOutputFile(mFd);
    try {
      mRec.prepare();
    } catch (IllegalStateException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
  
  private class ThreadHandler extends Thread {

    @Override
    public void run() {
      boolean mRun = true;
      Log.d(mRecTag, "Run of thread");
      if (true == InitialiseMedia()) {
        setUpRecorder();
        Log.d(mRecTag, "Start Record");
        mRec.start();
        mCurState = State_Play;
      }
      else {
        Log.e(mRecTag, "Initialise failed. What to do !?");
        mCurState = State_Unknown;
//        mRun = false;
      }
      
      while (mRun) {
        try {
          synchronized (this) {
            this.wait();
          }
        } catch (InterruptedException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
        /* Check if synchronization is required */
        switch (mCurState) {
        case State_Ready:
          /* Do Nothing */

          break;
        case State_Play:
          /* Nothing to do .. Handler errors */
          break;
        case State_Stop:
          Log.d(mRecTag, "stop record");
          mRec.stop();
          mRec.reset();
          mRec.release();
          /* Stop recording and cleanup */
          try {
            mCam.reconnect();
          } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
          }
          mRun = false;
          break;
        default:
          break;
        }
        if (mCurState != State_Unknown) {
          CleanupMedia();
        }
        
      }
    }
    
  }

  @Override
  public void onError(MediaRecorder mr, int what, int extra) {
    // TODO Auto-generated method stub
    Log.d(mRecTag, "MediaRecorder OnError: " + what);
    Log.d(mRecTag, "Extra " + extra);
  }
  
}

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