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/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.incallui;
import android.content.Context;
import android.view.View;
import android.telecom.InCallService.VideoCall;
import android.app.AlertDialog;
import android.view.LayoutInflater;
import android.view.Window;
import android.view.WindowManager;
import org.codeaurora.QtiVideoCallConstants;
import android.hardware.Camera;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraManager;
import java.lang.Integer;
import java.util.Objects;
import com.android.incallui.ZoomControl.OnZoomChangedListener;
/**
* This class implements the zoom listener for zoom control and shows the dialog and zoom controls
* on the InCall screen and maintains state info about the camera zoom index.
*/
public class InCallZoomController implements InCallPresenter.IncomingCallListener {
private static InCallZoomController sInCallZoomController;
private AlertDialog mAlertDialog;
private InCallPresenter mInCallPresenter;
private Context mContext;
private String mCameraId;
CameraManager mCameraManager;
/**
* This class implements the zoom listener for zoom control
*/
private class ZoomChangeListener implements ZoomControl.OnZoomChangedListener {
private VideoCall mVideoCall;
public ZoomChangeListener(VideoCall videoCall) {
mVideoCall = videoCall;
}
@Override
public void onZoomValueChanged(int index) {
Log.v("this", "onZoomValueChanged: index = " + index);
mZoomIndex = index;
mVideoCall.setZoom(mZoomIndex);
}
}
/**
* Default zoom value for camera
*/
private static final int DEFAULT_CAMERA_ZOOM_VALUE = 0;
/**
* Transparency value for alert dialog
*/
private static final float DIALOG_ALPHA_INDEX = 0.6f;
/**
* Static variable for storing zoom index value to maintain state
*/
private int mZoomIndex = DEFAULT_CAMERA_ZOOM_VALUE;
/**
* This method returns a singleton instance of {@class InCallZoomController}
*/
public static synchronized InCallZoomController getInstance() {
if (sInCallZoomController == null) {
sInCallZoomController = new InCallZoomController();
}
return sInCallZoomController;
}
/**
* Private constructor. Must use getInstance() to get this singleton.
*/
private InCallZoomController() {
}
/**
* Set up function called to add listener for camera selection changes
*/
public void setUp(Context context) {
mContext = context;
mInCallPresenter = InCallPresenter.getInstance();
mInCallPresenter.addIncomingCallListener(this);
mCameraManager = (CameraManager) mContext.getSystemService(Context.CAMERA_SERVICE);
}
/**
* Tear down function to reset all variables and remove camera selection listener
*/
public void tearDown() {
mAlertDialog = null;
mContext = null;
mCameraId = null;
mZoomIndex = DEFAULT_CAMERA_ZOOM_VALUE;
mInCallPresenter.removeIncomingCallListener(this);
mInCallPresenter = null;
mCameraManager = null;
}
/**
* Sets the layout params for the alert dialog - transparency and clearing flag to dim
* background UI
*/
private static void setLayoutParams(AlertDialog alertDialog) {
if (alertDialog == null) {
return;
}
final Window window = alertDialog.getWindow();
WindowManager.LayoutParams windowLayoutParams = window.getAttributes();
windowLayoutParams.alpha = DIALOG_ALPHA_INDEX;
window.setAttributes(windowLayoutParams);
window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
}
/**
* Called when preview surface is clicked on the InCallUI screen. Notification comes from
* {@class VideocallPresenter}. Create the alert dialog and the zoom control,
* set layout params attributes, set zoom params if zoom is supported and video call is valid
*/
public void onPreviewSurfaceClicked(VideoCall videoCall) {
Log.d(this, "onPreviewSurfaceClicked: VideoCall - " + videoCall);
if(videoCall == null || !isCameraZoomSupported()) {
Log.e(this, "onPreviewSurfaceClicked: VideoCall is null or Zoom not supported ");
return;
}
try {
final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(
mInCallPresenter.getActivity(), AlertDialog.THEME_HOLO_DARK);
final View zoomControlView = mInCallPresenter.getActivity().getLayoutInflater().
inflate(R.layout.qti_video_call_zoom_control, null);
final ZoomControlBar zoomControl = (ZoomControlBar) zoomControlView.findViewById(
R.id.zoom_control);
dialogBuilder.setView(zoomControlView);
mAlertDialog = dialogBuilder.create();
mAlertDialog.setCanceledOnTouchOutside(true);
setLayoutParams(mAlertDialog);
zoomControl.setOnZoomChangeListener(new ZoomChangeListener(videoCall));
initZoomControl(zoomControl, mZoomIndex);
mAlertDialog.show();
} catch (Exception e) {
Log.e(this, "onPreviewSurfaceClicked: Exception " + e);
return;
}
}
private static void initZoomControl(ZoomControlBar zoomControl, int zoomIndex) {
zoomControl.setZoomMax(QtiVideoCallConstants.CAMERA_MAX_ZOOM);
zoomControl.setZoomIndex(zoomIndex);
zoomControl.setEnabled(true);
}
/**
* Queries the camera characteristics to figure out if zoom is supported or not
*/
private boolean isCameraZoomSupported() {
try {
final InCallCameraManager inCallCameraManager = mInCallPresenter.
getInCallCameraManager();
final float CAMERA_ZOOM_NOT_SUPPORTED = 1.0f;
CameraCharacteristics characteristics = mCameraManager.getCameraCharacteristics(
inCallCameraManager.getActiveCameraId());
return (characteristics != null) && (characteristics.get(
CameraCharacteristics.SCALER_AVAILABLE_MAX_DIGITAL_ZOOM)
> CAMERA_ZOOM_NOT_SUPPORTED);
} catch (Exception e) {
Log.e(this, "isCameraZoomSupported: Failed to retrieve Max Zoom, " + e);
return false;
}
}
/**
* Called from the {@class VideoCallPresenter} when camera is enabled or disabled
* Reset the zoom index and dismiss the alert if camera id changes
*/
public void onCameraEnabled(String cameraId) {
Log.d(this, "onCameraEnabled: - cameraId -" + cameraId);
if (!Objects.equals(mCameraId, cameraId)) {
mCameraId = cameraId;
mZoomIndex = DEFAULT_CAMERA_ZOOM_VALUE;
dismissAlertDialog();
}
}
private void dismissAlertDialog() {
if (mAlertDialog != null) {
mAlertDialog.dismiss();
mAlertDialog = null;
}
}
/**
* Called when there is a new incoming call.
* Dismiss the alert.
*/
@Override
public void onIncomingCall(InCallPresenter.InCallState oldState,
InCallPresenter.InCallState newState, Call call) {
Log.v(this, "onIncomingCall - Call " + call + "oldState " + oldState + "newState " +
newState);
dismissAlertDialog();
}
}
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