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package android.hardware.hdmi;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.hardware.hdmi.HdmiControlManager.VendorCommandListener;
import android.os.RemoteException;
import android.util.Log;
/**
* Parent for classes of various HDMI-CEC device type used to access
* the HDMI control system service. Contains methods and data used in common.
*
* @hide
*/
@SystemApi
public abstract class HdmiClient {
private static final String TAG = "HdmiClient";
/* package */ final IHdmiControlService mService;
private IHdmiVendorCommandListener mIHdmiVendorCommandListener;
/* package */ abstract int getDeviceType();
/* package */ HdmiClient(IHdmiControlService service) {
mService = service;
}
/**
* Returns the active source information.
*
* @return {@link HdmiDeviceInfo} object that describes the active source
* or active routing path
*/
public HdmiDeviceInfo getActiveSource() {
try {
return mService.getActiveSource();
} catch (RemoteException e) {
Log.e(TAG, "getActiveSource threw exception ", e);
}
return null;
}
/**
* Sends a key event to other logical device.
*
* @param keyCode key code to send. Defined in {@link android.view.KeyEvent}.
* @param isPressed true if this is key press event
*/
public void sendKeyEvent(int keyCode, boolean isPressed) {
try {
mService.sendKeyEvent(getDeviceType(), keyCode, isPressed);
} catch (RemoteException e) {
Log.e(TAG, "sendKeyEvent threw exception ", e);
}
}
/**
* Sends vendor-specific command.
*
* @param targetAddress address of the target device
* @param params vendor-specific parameter. For <Vendor Command With ID> do not
* include the first 3 bytes (vendor ID).
* @param hasVendorId {@code true} if the command type will be <Vendor Command With ID>.
* {@code false} if the command will be <Vendor Command>
*/
public void sendVendorCommand(int targetAddress, byte[] params, boolean hasVendorId) {
try {
mService.sendVendorCommand(getDeviceType(), targetAddress, params, hasVendorId);
} catch (RemoteException e) {
Log.e(TAG, "failed to send vendor command: ", e);
}
}
/**
* Sets a listener used to receive incoming vendor-specific command.
*
* @param listener listener object
*/
public void setVendorCommandListener(@NonNull VendorCommandListener listener) {
if (listener == null) {
throw new IllegalArgumentException("listener cannot be null");
}
if (mIHdmiVendorCommandListener != null) {
throw new IllegalStateException("listener was already set");
}
try {
IHdmiVendorCommandListener wrappedListener = getListenerWrapper(listener);
mService.addVendorCommandListener(wrappedListener, getDeviceType());
mIHdmiVendorCommandListener = wrappedListener;
} catch (RemoteException e) {
Log.e(TAG, "failed to set vendor command listener: ", e);
}
}
private static IHdmiVendorCommandListener getListenerWrapper(
final VendorCommandListener listener) {
return new IHdmiVendorCommandListener.Stub() {
@Override
public void onReceived(int srcAddress, int destAddress, byte[] params,
boolean hasVendorId) {
listener.onReceived(srcAddress, destAddress, params, hasVendorId);
}
@Override
public void onControlStateChanged(boolean enabled, int reason) {
listener.onControlStateChanged(enabled, reason);
}
};
}
}
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