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/*
* 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 org.navitproject.navit;
import android.content.Context;
import android.hardware.Camera;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.io.IOException;
class NavitCamera extends SurfaceView implements SurfaceHolder.Callback {
private Camera mCamera;
private static final String TAG = "NavitCamera";
NavitCamera(Context context) {
super(context);
if (android.support.v4.content.ContextCompat.checkSelfPermission(context,
android.Manifest.permission.CAMERA)
!= android.content.pm.PackageManager.PERMISSION_GRANTED) {
Log.e(TAG,"No permission to access camera");
return;
}
SurfaceHolder holder;
holder = getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
Log.v(TAG,"Creator");
}
/**
* {@inheritDoc}
*
* <p>acquire the camera and tell it where to draw.</p>
*/
public void surfaceCreated(SurfaceHolder holder) {
if (mCamera != null) {
try {
mCamera = Camera.open();
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
Log.e(TAG, "IOException");
}
Log.i(TAG, "surfaceCreated");
} else {
Log.e(TAG, "null camera");
}
}
/**
* {@inheritDoc}
*
* <p>stop the preview and release the camera.</p>
*/
public void surfaceDestroyed(SurfaceHolder holder) {
mCamera.stopPreview();
mCamera = null;
Log.e(TAG,"surfaceDestroyed");
}
/**
* {@inheritDoc}
*
* <p>set up the camera with the new parameters.</p>
*/
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
Log.e(TAG,"surfaceChanged " + w + "x " + h);
mCamera.stopPreview();
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(w, h);
mCamera.setParameters(parameters);
mCamera.startPreview();
}
}
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