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/*
* Copyright (C) 2013 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.
*/
#ifndef ANDROID_HARDWARE_ICAMERASERVICE_LISTENER_H
#define ANDROID_HARDWARE_ICAMERASERVICE_LISTENER_H
#include <utils/RefBase.h>
#include <binder/IInterface.h>
#include <binder/Parcel.h>
#include <hardware/camera_common.h>
namespace android {
class ICameraServiceListener : public IInterface
{
public:
/**
* Initial status will be transmitted with onStatusChange immediately
* after this listener is added to the service listener list.
*
* Allowed transitions:
*
* (Any) -> NOT_PRESENT
* NOT_PRESENT -> PRESENT
* NOT_PRESENT -> ENUMERATING
* ENUMERATING -> PRESENT
* PRESENT -> AVAILABLE
* AVAILABLE -> NOT_AVAILABLE
* NOT_AVAILABLE -> AVAILABLE
*
* A state will never immediately transition back to itself.
*/
enum Status {
// Device physically unplugged
STATUS_NOT_PRESENT = CAMERA_DEVICE_STATUS_NOT_PRESENT,
// Device physically has been plugged in
STATUS_PRESENT = CAMERA_DEVICE_STATUS_PRESENT,
// Device physically has been plugged in
// but it will not be connect-able until enumeration is complete
STATUS_ENUMERATING = CAMERA_DEVICE_STATUS_ENUMERATING,
// Camera can be used exclusively
STATUS_AVAILABLE = 0x80000000,
// Camera is in use by another app and cannot be used exclusively
STATUS_NOT_AVAILABLE,
// Use to initialize variables only
STATUS_UNKNOWN = 0xFFFFFFFF,
};
DECLARE_META_INTERFACE(CameraServiceListener);
virtual void onStatusChanged(Status status, int32_t cameraId) = 0;
};
// ----------------------------------------------------------------------------
class BnCameraServiceListener : public BnInterface<ICameraServiceListener>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
}; // namespace android
#endif
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