Android Open Source - streamvid Video Recording

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License

The source code is released under:
GNU General Public License
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Java Source Code

package net.majorkernelpanic.example1;
//from   w  ww.ja  va  2 s  . c  o  m
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.hardware.Camera;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Environment;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.Toast;

public class VideoRecording extends Activity {

  
  private Camera myCamera;
    private MyCameraSurfaceView myCameraSurfaceView;
    private MediaRecorder mediaRecorder;

  Button myButton;
  SurfaceHolder surfaceHolder;
  boolean recording;
  
  
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        recording = false;
        
        setContentView(R.layout.recording);
        
        //Get Camera for preview
        myCamera = getCameraInstance();
        if(myCamera == null){
          Toast.makeText(VideoRecording.this, 
              "Fail to get Camera", 
              Toast.LENGTH_LONG).show();
        }

        myCameraSurfaceView = new MyCameraSurfaceView(this, myCamera);
        FrameLayout myCameraPreview = (FrameLayout)findViewById(R.id.videoview);
        myCameraPreview.addView(myCameraSurfaceView);
        
        myButton = (Button)findViewById(R.id.mybutton);
        myButton.setOnClickListener(myButtonOnClickListener);
    }
    
    Button.OnClickListener myButtonOnClickListener
    = new Button.OnClickListener(){

    @Override
    public void onClick(View v) {
      // TODO Auto-generated method stub
      if(recording){
                // stop recording and release camera
                mediaRecorder.stop();  // stop the recording
                releaseMediaRecorder(); // release the MediaRecorder object
                
                //Exit after saved
                finish();
      }else{
        
        //Release Camera before MediaRecorder start
        releaseCamera();
        
            if(!prepareMediaRecorder()){
              Toast.makeText(VideoRecording.this, 
                  "Fail in prepareMediaRecorder()!\n - Ended -", 
                  Toast.LENGTH_LONG).show();
              finish();
            }
        
        mediaRecorder.start();
        recording = true;
        myButton.setText("STOP");
      }
    }};
    
    private Camera getCameraInstance(){
    // TODO Auto-generated method stub
        Camera c = null;
        try {
            c = Camera.open(); // attempt to get a Camera instance
        }
        catch (Exception e){
            // Camera is not available (in use or does not exist)
        }
        return c; // returns null if camera is unavailable
  }
  
  private boolean prepareMediaRecorder(){
      myCamera = getCameraInstance();
      mediaRecorder = new MediaRecorder();

      myCamera.unlock();
      mediaRecorder.setCamera(myCamera);

      mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
      mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

      mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));

      //mediaRecorder.setOutputFile("/sdcard/myvideo.mp4");
      mediaRecorder.setOutputFile(Environment.getExternalStorageDirectory().getAbsolutePath() + "/video.mp4");
      mediaRecorder.setMaxDuration(60000); // Set max duration 60 sec.
        mediaRecorder.setMaxFileSize(1800000000); // Set max file size 2GIG

      mediaRecorder.setPreviewDisplay(myCameraSurfaceView.getHolder().getSurface());

      try {
          mediaRecorder.prepare();
      } catch (IllegalStateException e) {
          releaseMediaRecorder();
          return false;
      } catch (IOException e) {
          releaseMediaRecorder();
          return false;
      }
      return true;
    
  }
  
    @Override
    protected void onPause() {
        super.onPause();
        releaseMediaRecorder();       // if you are using MediaRecorder, release it first
        releaseCamera();              // release the camera immediately on pause event
    }

    private void releaseMediaRecorder(){
        if (mediaRecorder != null) {
            mediaRecorder.reset();   // clear recorder configuration
            mediaRecorder.release(); // release the recorder object
            mediaRecorder = null;
            myCamera.lock();           // lock camera for later use
        }
    }

    private void releaseCamera(){
        if (myCamera != null){
            myCamera.release();        // release the camera for other applications
            myCamera = null;
        }
    }
  
  public class MyCameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback{

    private SurfaceHolder mHolder;
      private Camera mCamera;
    
    public MyCameraSurfaceView(Context context, Camera camera) {
          super(context);
          mCamera = camera;

          // Install a SurfaceHolder.Callback so we get notified when the
          // underlying surface is created and destroyed.
          mHolder = getHolder();
          mHolder.addCallback(this);
          // deprecated setting, but required on Android versions prior to 3.0
          mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
      }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int weight,
        int height) {
          // If your preview can change or rotate, take care of those events here.
          // Make sure to stop the preview before resizing or reformatting it.

          if (mHolder.getSurface() == null){
            // preview surface does not exist
            return;
          }

          // stop preview before making changes
          try {
              mCamera.stopPreview();
          } catch (Exception e){
            // ignore: tried to stop a non-existent preview
          }

          // make any resize, rotate or reformatting changes here

          // start preview with new settings
          try {
              mCamera.setPreviewDisplay(mHolder);
              mCamera.startPreview();

          } catch (Exception e){
          }
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
      // TODO Auto-generated method stub
      // The Surface has been created, now tell the camera where to draw the preview.
          try {
              mCamera.setPreviewDisplay(holder);
              mCamera.startPreview();
          } catch (IOException e) {
          }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
      // TODO Auto-generated method stub
      
    }
  }
}
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