/** This method starts the camera preview and recording */
private void startPreviewAndRecording() {
try {
mCameraPreview.setVisibility(View.VISIBLE);
if (mTargetHeight != -1) {
resizeCameraPreview(mTargetHeight);
}
mVideoCallManager.startCameraPreview(mCameraSurface);
mVideoCallManager.startCameraRecording();
} catch (IOException ioe) {
closeCamera();
loge("Exception startPreviewAndRecording, " + ioe.toString());
}
}
public boolean isCameraInitNeeded() {
if (DBG) {
log(
"isCameraInitNeeded mCameraNeeded="
+ mCameraNeeded
+ " mCameraSurface= "
+ mCameraSurface
+ " camera state = "
+ mVideoCallManager.getCameraState());
}
return mCameraNeeded
&& mCameraSurface != null
&& mVideoCallManager.getCameraState() == CameraState.CAMERA_CLOSED;
}
/** This method is called when the visibility of the VideoCallPanel is changed */
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
if (changedView != this || mVideoCallManager == null) {
return;
}
switch (visibility) {
case View.INVISIBLE:
case View.GONE:
if (DBG) log("VideoCallPanel View is GONE or INVISIBLE");
// Stop the preview and close the camera now because other
// activities may need to use it
if (mVideoCallManager.getCameraState() != CameraState.CAMERA_CLOSED) {
stopRecordingAndPreview();
closeCamera();
}
break;
case View.VISIBLE:
if (DBG) log("VideoCallPanel View is VISIBLE");
if (isCameraInitNeeded()) {
initializeCamera();
}
break;
}
}
/**
* This method gets called when the zoom control reports that the zoom value has changed. This
* method sets the camera zoom value accordingly.
*
* @param index
*/
private void onZoomValueChanged(int index) {
mZoomValue = index;
ImsCamera imsCamera = mVideoCallManager.getImsCameraInstance();
// Set zoom
if (imsCamera.isZoomSupported()) {
imsCamera.setZoom(mZoomValue);
}
}
/**
* This method crates the camera object if camera is not disabled
*
* @param cameraId ID of the front or the back camera
* @return Camera instance on success, null otherwise
*/
private boolean openCamera(int cameraId) {
boolean result = false;
try {
return mVideoCallManager.openCamera(cameraId);
} catch (Exception e) {
loge("Failed to open camera device, error " + e.toString());
return result;
}
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
if (surface.equals(mCameraPreview.getSurfaceTexture())) {
if (DBG) log("CameraPreview surface texture destroyed");
stopRecordingAndPreview();
closeCamera();
mCameraSurface = null;
} else if (surface.equals(mFarEndView.getSurfaceTexture())) {
if (DBG) log("FarEndView surface texture destroyed");
mFarEndSurface = null;
mVideoCallManager.setFarEndSurface(null);
}
return true;
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
if (surface.equals(mCameraPreview.getSurfaceTexture())) {
if (DBG) log("Camera surface texture created");
mCameraSurface = surface;
if (isCameraInitNeeded()) {
initializeCamera();
}
} else if (surface.equals(mFarEndView.getSurfaceTexture())) {
if (DBG) log("Video surface texture created");
mFarEndSurface = surface;
mVideoCallManager.setFarEndSurface(mFarEndSurface);
}
}
/**
* This method switches the camera to front/back or off
*
* @param cameraId
*/
private void switchCamera(int cameraId) {
// Change the camera Id
mCameraId = cameraId;
// Stop camera preview if already running
if (mVideoCallManager.getCameraState() != CameraState.CAMERA_CLOSED) {
stopRecordingAndPreview();
closeCamera();
}
// Restart camera if camera doesn't need to stay off
if (isCameraInitNeeded()) {
initializeCamera();
}
}
/**
* This method get the zoom related parameters from the camera and initialized the zoom control
*/
private void initializeZoom() {
ImsCamera imsCamera = mVideoCallManager.getImsCameraInstance();
if (imsCamera == null) {
return;
}
if (!imsCamera.isZoomSupported()) {
mZoomControl.setVisibility(View.GONE); // Disable ZoomControl
return;
}
mZoomControl.setVisibility(View.VISIBLE); // Enable ZoomControl
mZoomMax = imsCamera.getMaxZoom();
// Currently we use immediate zoom for fast zooming to get better UX and
// there is no plan to take advantage of the smooth zoom.
mZoomControl.setZoomMax(mZoomMax);
mZoomControl.setZoomIndex(DEFAULT_CAMERA_ZOOM_VALUE);
mZoomControl.setOnZoomChangeListener(new ZoomChangeListener());
}
@Override
public void onClick(View v) {
int direction = mVideoCallManager.getCameraDirection();
// Switch the camera front/back/off
// The state machine is as follows
// front --> back --> stop preview --> front...
switch (direction) {
case CAMERA_UNKNOWN:
switchCamera(mFrontCameraId);
break;
case Camera.CameraInfo.CAMERA_FACING_FRONT:
switchCamera(mBackCameraId);
break;
case Camera.CameraInfo.CAMERA_FACING_BACK:
switchCamera(CAMERA_UNKNOWN);
break;
}
}
public void setPanelElementsVisibility(int callType) {
switch (callType) {
case Phone.CALL_TYPE_VT:
if (isCameraInitNeeded()) {
initializeCamera();
}
break;
case Phone.CALL_TYPE_VT_TX:
if (isCameraInitNeeded()) {
initializeCamera();
}
break;
case Phone.CALL_TYPE_VT_RX:
// Stop the preview and close the camera now because other
// activities may need to use it
if (mVideoCallManager.getCameraState() != CameraState.CAMERA_CLOSED) {
stopRecordingAndPreview();
closeCamera();
}
break;
default:
log("setPanelElementsVisibility: callType=" + callType);
break;
}
log(
"setPanelElementsVisibility: callType= "
+ callType
+ " VideoCallPanel is "
+ mVideoCallPanel.getVisibility()
+ " mCameraPreview is "
+ mCameraPreview.getVisibility()
+ " available="
+ mCameraPreview.isAvailable()
+ " activated= "
+ mCameraPreview.isActivated()
+ " mFarEndView is "
+ mFarEndView.getVisibility()
+ " available="
+ mFarEndView.isAvailable()
+ " activated= "
+ mFarEndView.isActivated());
}
/** Finalize view from inflation. */
@Override
protected void onFinishInflate() {
super.onFinishInflate();
if (DBG) log("onFinishInflate(this = " + this + ")...");
// Check the Media loopback property
int property = SystemProperties.getInt("net.lte.VT_LOOPBACK_ENABLE", 0);
mIsMediaLoopback = (property == 1) ? true : false;
if (DBG) log("Is Media running in loopback mode: " + mIsMediaLoopback);
// Get UI widgets
mVideoCallPanel = (ViewGroup) findViewById(R.id.videoCallPanel);
mZoomControl = (ZoomControlBar) findViewById(R.id.zoom_control);
mFarEndView = (TextureView) findViewById(R.id.video_view);
mCameraPreview = (TextureView) findViewById(R.id.camera_view);
mCameraPicker = (ImageView) findViewById(R.id.camera_picker);
// Set listeners
mCameraPreview.setSurfaceTextureListener(this);
mFarEndView.setSurfaceTextureListener(this);
mCameraPicker.setOnClickListener(this);
// Get the camera IDs for front and back cameras
mVideoCallManager = VideoCallManager.getInstance(mContext);
mBackCameraId = mVideoCallManager.getBackCameraId();
mFrontCameraId = mVideoCallManager.getFrontCameraId();
chooseCamera(true);
// Check if camera supports dual cameras
mNumberOfCameras = mVideoCallManager.getNumberOfCameras();
if (mNumberOfCameras > 1) {
mCameraPicker.setVisibility(View.VISIBLE);
} else {
mCameraPicker.setVisibility(View.GONE);
}
// Set media event listener
mVideoCallManager.setOnParamReadyListener(new ParamReadyListener());
mVideoCallManager.setCvoEventListener(new CvoListener());
}
/** Initialize camera parameters based on negotiated height, width */
private void initializeCameraParams() {
try {
// Get the parameter to make sure we have the up-to-date value.
ImsCamera imsCamera = mVideoCallManager.getImsCameraInstance();
// Set the camera preview size
if (mIsMediaLoopback) {
// In loopback mode the IMS is hard coded to render the
// camera frames of only the size 176x144 on the far end surface
imsCamera.setPreviewSize(LOOPBACK_MODE_WIDTH, LOOPBACK_MODE_HEIGHT);
} else {
log(
"Set Preview Size directly with negotiated Height = "
+ mVideoCallManager.getNegotiatedHeight()
+ " negotiated width= "
+ mVideoCallManager.getNegotiatedWidth());
imsCamera.setPreviewSize(
mVideoCallManager.getNegotiatedWidth(), mVideoCallManager.getNegotiatedHeight());
imsCamera.setPreviewFpsRange(mVideoCallManager.getNegotiatedFps());
}
} catch (RuntimeException e) {
loge("Error setting Camera preview size/fps exception=" + e);
}
}
public void startOrientationListener(boolean start) {
mVideoCallManager.startOrientationListener(start);
}
/** This method stops the camera recording and preview */
private void stopRecordingAndPreview() {
mCameraPreview.setVisibility(View.INVISIBLE);
mVideoCallManager.stopCameraRecording();
mVideoCallManager.stopCameraPreview();
}
/** This method disconnect and releases the camera */
private void closeCamera() {
mVideoCallManager.closeCamera();
}
