49842cee05
These two tasks (starting the camera device, and starting working thread that pulls frames from the started camera device) should be clearly separated, and should not be combined in one method (as it was with the 'startCapturing' method). Change-Id: I779bee924d99d9a87257c6b76791545b76795e72
122 lines
4.3 KiB
C++
Executable File
122 lines
4.3 KiB
C++
Executable File
/*
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* Copyright (C) 2011 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 HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA_DEVICE_H
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#define HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA_DEVICE_H
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/*
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* Contains declaration of a class EmulatedQemuCameraDevice that encapsulates
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* an emulated camera device connected to the host.
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*/
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#include "EmulatedCameraDevice.h"
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#include "QemuClient.h"
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namespace android {
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class EmulatedQemuCamera;
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/* Encapsulates an emulated camera device connected to the host.
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*/
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class EmulatedQemuCameraDevice : public EmulatedCameraDevice {
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public:
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/* Constructs EmulatedQemuCameraDevice instance. */
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explicit EmulatedQemuCameraDevice(EmulatedQemuCamera* camera_hal);
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/* Destructs EmulatedQemuCameraDevice instance. */
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~EmulatedQemuCameraDevice();
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/***************************************************************************
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* Public API
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**************************************************************************/
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public:
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/* Initializes EmulatedQemuCameraDevice instance.
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* Param:
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* device_name - Name of the camera device connected to the host. The name
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* that is used here must have been reported by the 'factory' camera
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* service when it listed camera devices connected to the host.
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* Return:
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* NO_ERROR on success, or an appropriate error status.
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*/
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status_t Initialize(const char* device_name);
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/***************************************************************************
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* Emulated camera device abstract interface implementation.
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* See declarations of these methods in EmulatedCameraDevice class for
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* information on each of these methods.
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**************************************************************************/
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public:
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/* Connects to the camera device. */
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status_t connectDevice();
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/* Disconnects from the camera device. */
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status_t disconnectDevice();
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/* Starts capturing frames from the camera device. */
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status_t startDevice(int width, int height, uint32_t pix_fmt);
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/* Stops capturing frames from the camera device. */
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status_t stopDevice();
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/***************************************************************************
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* EmulatedCameraDevice virtual overrides
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* See declarations of these methods in EmulatedCameraDevice class for
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* information on each of these methods.
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**************************************************************************/
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public:
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/* Gets current preview fame into provided buffer.
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* We override this method in order to provide preview frames cached in this
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* object.
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*/
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status_t getCurrentPreviewFrame(void* buffer);
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/***************************************************************************
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* Worker thread management overrides.
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* See declarations of these methods in EmulatedCameraDevice class for
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* information on each of these methods.
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**************************************************************************/
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protected:
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/* Implementation of the worker thread routine. */
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bool inWorkerThread();
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/***************************************************************************
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* Qemu camera device data members
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**************************************************************************/
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private:
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/* Qemu client that is used to communicate with the 'emulated camera'
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* service, created for this instance in the emulator. */
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CameraQemuClient mQemuClient;
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/* Name of the camera device connected to the host. */
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String8 mDeviceName;
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/* Current preview framebuffer. */
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uint32_t* mPreviewFrame;
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/* Emulated FPS (frames per second).
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* We will emulate 50 FPS. */
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static const int mEmulatedFPS = 50;
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};
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}; /* namespace android */
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#endif /* HW_EMULATOR_CAMERA_EMULATED_QEMU_CAMERA_DEVICE_H */
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