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/*
* Copyright (C) 2012 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.gallery3d.app;
import android.content.Context;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.util.AttributeSet;
import android.util.Log;
import android.view.TextureView;
import android.view.View;
import java.io.IOException;
// This is a sample View which demos the usage of ScreenNailBridge. It
// is not intended for production use.
public class CameraView extends TextureView implements
TextureView.SurfaceTextureListener, ScreenNailBridge.Listener {
private static final String TAG = "CameraView";
private static final int PREVIEW_WIDTH = 960;
private static final int PREVIEW_HEIGHT = 720;
private Camera mCamera;
private ScreenNailBridge mScreenNailBridge;
public CameraView(Context context) {
super(context);
init();
}
public CameraView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
setVisibility(View.INVISIBLE);
setSurfaceTextureListener(this);
}
public void setScreenNailBridge(ScreenNailBridge s) {
mScreenNailBridge = s;
}
@Override
public void onMeasure(int widthSpec, int heightSpec) {
int width = getDefaultSize(PREVIEW_WIDTH, widthSpec);
int height = getDefaultSize(PREVIEW_HEIGHT, heightSpec);
// Keep aspect ratio
if (width * PREVIEW_HEIGHT > PREVIEW_WIDTH * height) {
width = PREVIEW_WIDTH * height / PREVIEW_HEIGHT;
} else {
height = PREVIEW_HEIGHT * width / PREVIEW_WIDTH;
}
setMeasuredDimension(width, height);
}
@Override
public void onSizeChanged(int w, int h, int oldw, int oldh) {
mScreenNailBridge.setSize(w, h);
}
@Override
public void updateView(boolean visible, int x, int y, int w, int h) {
if (!visible) {
setVisibility(View.INVISIBLE);
} else {
setVisibility(View.VISIBLE);
setTranslationX(x);
setTranslationY(y);
}
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
try {
mCamera = Camera.open();
Camera.Parameters param = mCamera.getParameters();
param.setPreviewSize(PREVIEW_WIDTH, PREVIEW_HEIGHT);
mCamera.setParameters(param);
mCamera.setPreviewTexture(surface);
mCamera.startPreview();
} catch (Throwable ex) {
Log.e(TAG, "failed to open camera", ex);
}
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
mCamera.stopPreview();
mCamera.release();
return true;
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
}
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