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/*
* Copyright (C) 2016 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.dialer.callcomposer.cameraui;
import android.content.Context;
import android.graphics.Canvas;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import com.android.dialer.callcomposer.camera.CameraManager;
import com.android.dialer.callcomposer.camera.HardwareCameraPreview;
import com.android.dialer.callcomposer.camera.SoftwareCameraPreview;
import com.android.dialer.common.LogUtil;
/** Used to display the view of the camera. */
public class CameraMediaChooserView extends FrameLayout {
private static final String STATE_CAMERA_INDEX = "camera_index";
private static final String STATE_SUPER = "super";
// True if we have at least queued an update to the view tree to support software rendering
// fallback
private boolean isSoftwareFallbackActive;
public CameraMediaChooserView(final Context context, final AttributeSet attrs) {
super(context, attrs);
}
@Override
protected Parcelable onSaveInstanceState() {
final Bundle bundle = new Bundle();
bundle.putParcelable(STATE_SUPER, super.onSaveInstanceState());
final int cameraIndex = CameraManager.get().getCameraIndex();
LogUtil.i("CameraMediaChooserView.onSaveInstanceState", "saving camera index:" + cameraIndex);
bundle.putInt(STATE_CAMERA_INDEX, cameraIndex);
return bundle;
}
@Override
protected void onRestoreInstanceState(final Parcelable state) {
if (!(state instanceof Bundle)) {
return;
}
final Bundle bundle = (Bundle) state;
final int cameraIndex = bundle.getInt(STATE_CAMERA_INDEX);
super.onRestoreInstanceState(bundle.getParcelable(STATE_SUPER));
LogUtil.i(
"CameraMediaChooserView.onRestoreInstanceState", "restoring camera index:" + cameraIndex);
if (cameraIndex != -1) {
CameraManager.get().selectCameraByIndex(cameraIndex);
} else {
resetState();
}
}
public void resetState() {
CameraManager.get().selectCamera(Camera.CameraInfo.CAMERA_FACING_BACK);
}
@Override
protected void onDraw(final Canvas canvas) {
super.onDraw(canvas);
// If the canvas isn't hardware accelerated, we have to replace the HardwareCameraPreview
// with a SoftwareCameraPreview which supports software rendering
if (!canvas.isHardwareAccelerated() && !isSoftwareFallbackActive) {
isSoftwareFallbackActive = true;
// Post modifying the tree since we can't modify the view tree during a draw pass
post(
new Runnable() {
@Override
public void run() {
final HardwareCameraPreview cameraPreview =
(HardwareCameraPreview) findViewById(R.id.camera_preview);
if (cameraPreview == null) {
return;
}
final ViewGroup parent = ((ViewGroup) cameraPreview.getParent());
final int index = parent.indexOfChild(cameraPreview);
final SoftwareCameraPreview softwareCameraPreview =
new SoftwareCameraPreview(getContext());
// Be sure to remove the hardware view before adding the software view to
// prevent having 2 camera previews active at the same time
parent.removeView(cameraPreview);
parent.addView(softwareCameraPreview, index);
}
});
}
}
}
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