118 lines
4 KiB
C++
118 lines
4 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HARDWARE_CAMERA_BASE_H
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#define ANDROID_HARDWARE_CAMERA_BASE_H
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#include <utils/Mutex.h>
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#include <camera/ICameraService.h>
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struct camera_frame_metadata;
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namespace android {
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struct CameraInfo {
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/**
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* The direction that the camera faces to. It should be CAMERA_FACING_BACK
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* or CAMERA_FACING_FRONT.
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*/
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int facing;
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/**
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* The orientation of the camera image. The value is the angle that the
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* camera image needs to be rotated clockwise so it shows correctly on the
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* display in its natural orientation. It should be 0, 90, 180, or 270.
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*
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* For example, suppose a device has a naturally tall screen. The
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* back-facing camera sensor is mounted in landscape. You are looking at
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* the screen. If the top side of the camera sensor is aligned with the
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* right edge of the screen in natural orientation, the value should be
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* 90. If the top side of a front-facing camera sensor is aligned with the
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* right of the screen, the value should be 270.
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*/
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int orientation;
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};
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template <typename TCam>
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struct CameraTraits {
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};
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template <typename TCam, typename TCamTraits = CameraTraits<TCam> >
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class CameraBase : public IBinder::DeathRecipient
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{
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public:
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typedef typename TCamTraits::TCamListener TCamListener;
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typedef typename TCamTraits::TCamUser TCamUser;
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typedef typename TCamTraits::TCamCallbacks TCamCallbacks;
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typedef typename TCamTraits::TCamConnectService TCamConnectService;
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static sp<TCam> connect(int cameraId,
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const String16& clientPackageName,
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int clientUid);
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virtual void disconnect();
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void setListener(const sp<TCamListener>& listener);
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static int getNumberOfCameras();
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static status_t getCameraInfo(int cameraId,
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/*out*/
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struct CameraInfo* cameraInfo);
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static status_t addServiceListener(
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const sp<ICameraServiceListener>& listener);
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static status_t removeServiceListener(
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const sp<ICameraServiceListener>& listener);
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sp<TCamUser> remote();
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// Status is set to 'UNKNOWN_ERROR' after successful (re)connection
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status_t getStatus();
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protected:
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CameraBase(int cameraId);
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virtual ~CameraBase();
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////////////////////////////////////////////////////////
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// TCamCallbacks implementation
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////////////////////////////////////////////////////////
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virtual void notifyCallback(int32_t msgType, int32_t ext,
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int32_t ext2);
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////////////////////////////////////////////////////////
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// Common instance variables
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////////////////////////////////////////////////////////
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Mutex mLock;
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virtual void binderDied(const wp<IBinder>& who);
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// helper function to obtain camera service handle
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static const sp<ICameraService>& getCameraService();
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sp<TCamUser> mCamera;
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status_t mStatus;
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sp<TCamListener> mListener;
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const int mCameraId;
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typedef CameraBase<TCam> CameraBaseT;
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};
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}; // namespace android
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#endif
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