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/*
* Copyright (C) 2011 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_QEMU_CAMERA_DEVICE_H
#define HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA_DEVICE_H
/*
* Contains declaration of a class EmulatedQemuCameraDevice that encapsulates
* an emulated camera device connected to the host.
*/
#include "EmulatedCameraDevice.h"
#include "QemuClient.h"
namespace android {
class EmulatedQemuCamera;
/* Encapsulates an emulated camera device connected to the host.
*/
class EmulatedQemuCameraDevice : public EmulatedCameraDevice {
public:
/* Constructs EmulatedQemuCameraDevice instance. */
explicit EmulatedQemuCameraDevice(EmulatedQemuCamera* camera_hal);
/* Destructs EmulatedQemuCameraDevice instance. */
~EmulatedQemuCameraDevice();
/***************************************************************************
* Public API
**************************************************************************/
public:
/* Initializes EmulatedQemuCameraDevice instance.
* Param:
* device_name - Name of the camera device connected to the host. The name
* that is used here must have been reported by the 'factory' camera
* service when it listed camera devices connected to the host.
* Return:
* NO_ERROR on success, or an appropriate error status.
*/
status_t Initialize(const char* device_name);
/***************************************************************************
* Emulated camera device abstract interface implementation.
* See declarations of these methods in EmulatedCameraDevice class for
* information on each of these methods.
**************************************************************************/
public:
/* Connects to the camera device. */
status_t connectDevice();
/* Disconnects from the camera device. */
status_t disconnectDevice();
/* Starts capturing frames from the camera device. */
status_t startDevice(int width, int height, uint32_t pix_fmt);
/* Stops capturing frames from the camera device. */
status_t stopDevice();
/***************************************************************************
* EmulatedCameraDevice virtual overrides
* See declarations of these methods in EmulatedCameraDevice class for
* information on each of these methods.
**************************************************************************/
public:
/* Gets current preview fame into provided buffer.
* We override this method in order to provide preview frames cached in this
* object.
*/
status_t getCurrentPreviewFrame(void* buffer);
/***************************************************************************
* Worker thread management overrides.
* See declarations of these methods in EmulatedCameraDevice class for
* information on each of these methods.
**************************************************************************/
protected:
/* Implementation of the worker thread routine. */
bool inWorkerThread();
/***************************************************************************
* Qemu camera device data members
**************************************************************************/
private:
/* Qemu client that is used to communicate with the 'emulated camera'
* service, created for this instance in the emulator. */
CameraQemuClient mQemuClient;
/* Name of the camera device connected to the host. */
String8 mDeviceName;
/* Current preview framebuffer. */
uint32_t* mPreviewFrame;
/* Emulated FPS (frames per second).
* We will emulate 50 FPS. */
static const int mEmulatedFPS = 50;
};
}; /* namespace android */
#endif /* HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA_DEVICE_H */