path: root/src/com/example/rotorm/CameraActivity.java

package com.example.rotorm;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.PutObjectRequest;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.hardware.Camera.PreviewCallback;
import android.media.CamcorderProfile;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.FrameLayout;

public class CameraActivity extends Activity 
implements SurfaceHolder.Callback, OnClickListener {

private static final String TAG = "CameraRecorderActivity";

public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;

private Camera mCamera;
private Preview mPreview;
private MediaRecorder mMediaRecorder;
private Button captureButton;
private boolean isRecording = false;

private MediaPlayer mp; 

private String filename="";
private String audiofilename;

private static final String AWS_S3_BUCKET_NAME="rotor-development";
private static final String AWS_S3_BUCKET_ENDPOINT="s3-eu-west-1.amazonaws.com";
private static final String AWS_ACCESS_KEY_ID="AKIAIXPDDG4VNFOWMXHQ";
private static final String AWS_SECRET_KEY="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";

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    
    Intent intent = new Intent();
    intent.setAction(android.content.Intent.ACTION_PICK);
    intent.setData(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, 1234); //0 stops picker
    
}

public void mCallback() {
    
}

public void onActivityResult(int requestCode, int resultCode, Intent data){
	Uri audioUri = data.getData();
	audiofilename=audioUri.toString();
	
	Log.i("returned data from intent: "+audiofilename, "SUCCESS");
	
    // Create an instance of Camera.
    mCamera = getCameraInstance();
    
    // Create preview view and set it as the content of our activity.
    mPreview = new Preview(this, mCamera);
    //int i = R.id.preview;
    //Object o = this.findViewById(i);
    //FrameLayout preview = (FrameLayout) o;
    //preview.addView(mPreview);
   
    
    mPreview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
	((FrameLayout) findViewById(R.id.preview)).addView(mPreview);
	mPreview.setKeepScreenOn(true);

 // Add a listener to the Capture button
    captureButton = (Button) findViewById(R.id.buttonClick);
    captureButton.setOnClickListener(
        new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (isRecording) {
                	mp.stop();
                    // stop recording and release camera
                    mMediaRecorder.stop();  // stop the recording
                    releaseMediaRecorder(); // release the MediaRecorder object
                    mCamera.lock();         // take camera access back from MediaRecorder
                    Log.i("recorded "+filename, "END");
                    // inform the user that recording has stopped
                    setCaptureButtonText("Capture");
                    isRecording = false;
                    
                    //we are now ready to upload the file
                    //http://aws.amazon.com/articles/SDKs/Android/3002109349624271
                    AmazonS3Client s3Client = new AmazonS3Client( new BasicAWSCredentials( AWS_ACCESS_KEY_ID, AWS_SECRET_KEY ) );
                    //our bucket already exists
                    
                    //PutObjectRequest por = new PutObjectRequest( Constants.getPictureBucket(), Constants.PICTURE_NAME, new java.io.File( filePath) );  
                    //s3Client.putObject( por );
                    
                } else {
                    // initialize video camera
                    if (prepareVideoRecorder()) {
                        // Camera is available and unlocked, MediaRecorder is prepared,
                        // now you can start recording
                    	
                    	//prepare to play audio
                    	mp = new MediaPlayer();
                    	
                    	try {
                            mp.setDataSource(audiofilename);
                            mp.prepare();
                            mp.start();
                        } catch (IllegalArgumentException e) {
                            e.printStackTrace();
                        } catch (IllegalStateException e) {
                            e.printStackTrace();
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    	
                    	Log.i("starting to record", "BEGIN");
                        mMediaRecorder.start();

                        // inform the user that recording has started
                        setCaptureButtonText("Stop");
                        isRecording = true;
                    } else {
                        // prepare didn't work, release the camera
                        releaseMediaRecorder();
                        // inform user
                    }
                }
            }
        }
    );
}


public void setCaptureButtonText(String s) {
    captureButton.setText(s);
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
    // The Surface has been created, now tell the camera where to draw the preview.
    try {
        mCamera.setPreviewDisplay(holder);
        mCamera.startPreview();
    } catch (IOException e) {
        Log.d(TAG, "Error setting camera preview: " + e.getMessage());
    }
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
    // TODO Auto-generated method stub
}

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

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
    // To be safe, you should check that the SDCard is mounted
    // using Environment.getExternalStorageState() before doing this.
    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.DIRECTORY_PICTURES), "RotorM");
    // This location works best if you want the created images to be shared
    // between applications and persist after your app has been uninstalled.
    // Create the storage directory if it does not exist
    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            Log.d("RotorM", "failed to create directory");
            return null;
        }
    }
    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    File mediaFile;
    if (type == MEDIA_TYPE_IMAGE){
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "IMG_"+ timeStamp + ".jpg");
    } else if(type == MEDIA_TYPE_VIDEO) {
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "VID_"+ timeStamp + ".mp4");
    } else {
        return null;
    }
    return mediaFile;
}

private boolean prepareVideoRecorder(){
    //mCamera = getCameraInstance();
    mMediaRecorder = new MediaRecorder();
    // Step 1: Unlock and set camera to MediaRecorder
    mCamera.unlock();
    mMediaRecorder.setCamera(mCamera);
    // Step 2: Set sources
    
    //and there is no option to set a NULL audio source
    //mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); 
    
    //if you don't use a profile how to raise quality?
    
    
    //121113 if you don't set audio source re
    //11-12 11:56:19.893: E/MediaRecorder(6637): try to set the audio encoder without setting the audio source first

    
    mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    //
    mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264); //without this capture doesn't begin
    
    mMediaRecorder.setVideoSize(1280,720);
    mMediaRecorder.setVideoFrameRate(25);
    mMediaRecorder.setVideoEncodingBitRate(3000000);
    //so the combination of these 3 things does work
    
    //11-12 11:25:06.138: E/AndroidRuntime(5094): java.lang.RuntimeException: getParameters failed (empty parameters)
 
    //Camera.Parameters params = mCamera.getParameters(); //how to get parameters? 
	//List<Camera.Size> sizes=params.getSupportedVideoSizes();
	//params.setPictureSize(1280, 720);
	//mCamera.setParameters(params);
    
    //how to manually set profile?????


    //List<Camera.Size> sizes = mCamera.getSupportedVideoSizes();
    //mCamera.setSize(720,480);
	
    //mMediaRecorder.setVideoSize(720, 480);
    // Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
    
   
    //11-12 11:58:28.628: E/AndroidRuntime(6884): java.lang.IllegalArgumentException: Number of channels is not positive
    //mMediaRecorder.setAudioChannels(0);
    
    //11-12 11:26:24.213: E/MediaRecorder(5226): setOutputFormat called in an invalid state: 4
    //mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH)); 
    
    
    // Step 4: Set output file
    filename=getOutputMediaFile(MEDIA_TYPE_VIDEO).toString(); //temporary
    mMediaRecorder.setOutputFile(getOutputMediaFile(MEDIA_TYPE_VIDEO).toString());
    // Step 5: Set the preview output
    mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
    // Step 6: Prepare configured MediaRecorder
    try {
        mMediaRecorder.prepare();
    } catch (IllegalStateException e) {
        Log.d(TAG, "IllegalStateException preparing MediaRecorder: " + e.getMessage());
        releaseMediaRecorder();
        return false;
    } catch (IOException e) {
        Log.d(TAG, "IOException preparing MediaRecorder: " + e.getMessage());
        releaseMediaRecorder();
        return false;
    }
    return true;
}


private void getSupportedVideoSizes() {
	// TODO Auto-generated method stub
	
}

@Override
public void onClick(View v) {
    
    Log.i("onClick", "BEGIN");
    //if(!recording) {
    //    recording = startRecording();
    //} else {
    //    stopRecording();
    //    recording = false;
    //}
    //Log.i("onClick", "END");
    
}

@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 (mMediaRecorder != null) {
        mMediaRecorder.reset();   // clear recorder configuration
        mMediaRecorder.release(); // release the recorder object
        mMediaRecorder = null;
        mCamera.lock();           // lock camera for later use
    }
}

private void releaseCamera(){
    if (mCamera != null){
        mCamera.release();        // release the camera for other applications
        mCamera = null;
    }
}

  private Camera getCameraInstance(){
          Camera c = null;
          try {
              c = Camera.open(); // attempt to get a Camera instance
              //c = this.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
    }

    public Camera open() {
        int numberOfCameras = Camera.getNumberOfCameras();
        CameraInfo cameraInfo = new CameraInfo();
        for (int i = 0; i < numberOfCameras; i++) {
            Camera.getCameraInfo(i, cameraInfo);
            if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
                return Camera.open(i);
            }
        }
        return null;
    }     
}