Refactored emulated camera HAL to comply with code style

Change-Id: If57b536ae6b1f9bad4213630488591a3b3cc9fdd
2011-09-13 14:35:25 -07:00
parent 492332c295
commit 5467be2eef
25 changed files with 1091 additions and 1088 deletions
--- a/tools/emulator/system/camera/EmulatedQemuCameraDevice.h
+++ b/tools/emulator/system/camera/EmulatedQemuCameraDevice.h
@@ -0,0 +1,120 @@
+/*
+ * 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();
+
+protected:
+    /* Starts capturing frames from the camera device. */
+    status_t startDevice();
+
+    /* Stops capturing frames from the camera device. */
+    status_t stopDevice();
+
+    /***************************************************************************
+     * EmulatedCameraDevice virtual overrides
+     **************************************************************************/
+
+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. */
+    uint16_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 */