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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_CAMERA_BASE_H
#define ANDROID_HARDWARE_CAMERA_BASE_H
#include <utils/Mutex.h>
#include <camera/ICameraService.h>
struct camera_frame_metadata;
namespace android {
struct CameraInfo {
/**
* The direction that the camera faces to. It should be CAMERA_FACING_BACK
* or CAMERA_FACING_FRONT.
*/
int facing;
/**
* The orientation of the camera image. The value is the angle that the
* camera image needs to be rotated clockwise so it shows correctly on the
* display in its natural orientation. It should be 0, 90, 180, or 270.
*
* For example, suppose a device has a naturally tall screen. The
* back-facing camera sensor is mounted in landscape. You are looking at
* the screen. If the top side of the camera sensor is aligned with the
* right edge of the screen in natural orientation, the value should be
* 90. If the top side of a front-facing camera sensor is aligned with the
* right of the screen, the value should be 270.
*/
int orientation;
};
template <typename TCam>
struct CameraTraits {
};
template <typename TCam, typename TCamTraits = CameraTraits<TCam> >
class CameraBase : public IBinder::DeathRecipient
{
public:
typedef typename TCamTraits::TCamListener TCamListener;
typedef typename TCamTraits::TCamUser TCamUser;
typedef typename TCamTraits::TCamCallbacks TCamCallbacks;
typedef typename TCamTraits::TCamConnectService TCamConnectService;
static sp<TCam> connect(int cameraId,
const String16& clientPackageName,
int clientUid);
virtual void disconnect();
void setListener(const sp<TCamListener>& listener);
static int getNumberOfCameras();
static status_t getCameraInfo(int cameraId,
/*out*/
struct CameraInfo* cameraInfo);
static status_t addServiceListener(
const sp<ICameraServiceListener>& listener);
static status_t removeServiceListener(
const sp<ICameraServiceListener>& listener);
sp<TCamUser> remote();
// Status is set to 'UNKNOWN_ERROR' after successful (re)connection
status_t getStatus();
protected:
CameraBase(int cameraId);
virtual ~CameraBase();
////////////////////////////////////////////////////////
// TCamCallbacks implementation
////////////////////////////////////////////////////////
virtual void notifyCallback(int32_t msgType, int32_t ext,
int32_t ext2);
////////////////////////////////////////////////////////
// Common instance variables
////////////////////////////////////////////////////////
Mutex mLock;
virtual void binderDied(const wp<IBinder>& who);
// helper function to obtain camera service handle
static const sp<ICameraService>& getCameraService();
sp<TCamUser> mCamera;
status_t mStatus;
sp<TCamListener> mListener;
const int mCameraId;
typedef CameraBase<TCam> CameraBaseT;
};
}; // namespace android
#endif
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