You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
4.2 KiB
120 lines
4.2 KiB
/*
|
|
* Copyright (C) 2012 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 HW_EMULATOR_CAMERA_EMULATED_BASE_CAMERA_H
|
|
#define HW_EMULATOR_CAMERA_EMULATED_BASE_CAMERA_H
|
|
|
|
#include <hardware/camera_common.h>
|
|
#include <utils/Errors.h>
|
|
|
|
namespace android {
|
|
|
|
/*
|
|
* Contains declaration of a class EmulatedBaseCamera that encapsulates
|
|
* functionality common to all emulated camera device versions ("fake",
|
|
* "webcam", "video file", etc.). Instances of this class (for each emulated
|
|
* camera) are created during the construction of the EmulatedCameraFactory
|
|
* instance. This class serves as an entry point for all camera API calls that
|
|
* are common across all versions of the camera_device_t/camera_module_t
|
|
* structures.
|
|
*/
|
|
|
|
class EmulatedBaseCamera {
|
|
public:
|
|
EmulatedBaseCamera(int cameraId,
|
|
uint32_t cameraVersion,
|
|
struct hw_device_t* device,
|
|
struct hw_module_t* module);
|
|
|
|
virtual ~EmulatedBaseCamera();
|
|
|
|
/****************************************************************************
|
|
* Public API
|
|
***************************************************************************/
|
|
|
|
public:
|
|
/* Initializes EmulatedCamera instance.
|
|
* Return:
|
|
* NO_ERROR on success, or an appropriate error status on failure.
|
|
*/
|
|
virtual status_t Initialize() = 0;
|
|
|
|
/****************************************************************************
|
|
* Camera API implementation
|
|
***************************************************************************/
|
|
|
|
public:
|
|
int getCameraId() const { return mCameraID; }
|
|
|
|
/* Creates connection to the emulated camera device.
|
|
* This method is called in response to hw_module_methods_t::open callback.
|
|
* NOTE: When this method is called the object is locked.
|
|
* Note that failures in this method are reported as negative EXXX statuses.
|
|
*/
|
|
virtual status_t connectCamera(hw_device_t** device) = 0;
|
|
|
|
|
|
/* Plug the connection for the emulated camera. Until it's plugged in
|
|
* calls to connectCamera should fail with -ENODEV.
|
|
*/
|
|
virtual status_t plugCamera();
|
|
|
|
/* Unplug the connection from underneath the emulated camera.
|
|
* This is similar to closing the camera, except that
|
|
* all function calls into the camera device will return
|
|
* -EPIPE errors until the camera is reopened.
|
|
*/
|
|
virtual status_t unplugCamera();
|
|
|
|
virtual camera_device_status_t getHotplugStatus();
|
|
|
|
/* Closes connection to the emulated camera.
|
|
* This method is called in response to camera_device::close callback.
|
|
* NOTE: When this method is called the object is locked.
|
|
* Note that failures in this method are reported as negative EXXX statuses.
|
|
*/
|
|
virtual status_t closeCamera() = 0;
|
|
|
|
/* Gets camera information.
|
|
* This method is called in response to camera_module_t::get_camera_info
|
|
* callback.
|
|
* NOTE: When this method is called the object is locked.
|
|
* Note that failures in this method are reported as negative EXXX statuses.
|
|
*/
|
|
virtual status_t getCameraInfo(struct camera_info* info) = 0;
|
|
|
|
/****************************************************************************
|
|
* Data members
|
|
***************************************************************************/
|
|
|
|
protected:
|
|
/* Fixed camera information for camera2 devices. Must be valid to access if
|
|
* mCameraDeviceVersion is >= HARDWARE_DEVICE_API_VERSION(2,0) */
|
|
camera_metadata_t *mCameraInfo;
|
|
|
|
/* Zero-based ID assigned to this camera. */
|
|
int mCameraID;
|
|
|
|
private:
|
|
|
|
/* Version of the camera device HAL implemented by this camera */
|
|
int mCameraDeviceVersion;
|
|
};
|
|
|
|
} /* namespace android */
|
|
|
|
#endif /* HW_EMULATOR_CAMERA_EMULATED_BASE_CAMERA_H */
|