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/*
**
** Copyright 2009, The Android-x86 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.
**
** Author: Niels Keeman <nielskeeman@gmail.com>
**
*/
#ifndef ANDROID_HARDWARE_CAMERA_HARDWARE_H
#define ANDROID_HARDWARE_CAMERA_HARDWARE_H
#include <utils/threads.h>
#include <camera/CameraHardwareInterface.h>
#include <binder/MemoryBase.h>
#include <binder/MemoryHeapBase.h>
#include <utils/threads.h>
#include <sys/ioctl.h>
#include "V4L2Camera.h"
namespace android {
class CameraHardware : public CameraHardwareInterface {
public:
virtual sp<IMemoryHeap> getPreviewHeap() const;
virtual sp<IMemoryHeap> getRawHeap() const;
virtual status_t startPreview();
virtual void setCallbacks(notify_callback notify_cb,
data_callback data_cb,
data_callback_timestamp data_cb_timestamp,
void* arg);
/**
* Enable a message, or set of messages.
*/
virtual void enableMsgType(int32_t msgType);
/**
* Disable a message, or a set of messages.
*/
virtual void disableMsgType(int32_t msgType);
/**
* Query whether a message, or a set of messages, is enabled.
* Note that this is operates as an AND, if any of the messages
* queried are off, this will return false.
*/
virtual bool msgTypeEnabled(int32_t msgType);
virtual void stopPreview();
virtual bool previewEnabled();
virtual status_t startRecording();
virtual void stopRecording();
virtual bool recordingEnabled();
virtual void releaseRecordingFrame(const sp<IMemory>& mem);
virtual status_t autoFocus();
virtual status_t cancelAutoFocus();
virtual status_t takePicture();
virtual status_t cancelPicture();
virtual status_t dump(int fd, const Vector<String16>& args) const;
virtual status_t setParameters(const CameraParameters& params);
virtual CameraParameters getParameters() const;
virtual void release();
virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
static sp<CameraHardwareInterface> createInstance(int cameraId);
private:
CameraHardware(int cameraId);
virtual ~CameraHardware();
static wp<CameraHardwareInterface> singleton;
static const int kBufferCount = 4;
class PreviewThread : public Thread {
CameraHardware* mHardware;
public:
PreviewThread(CameraHardware* hw)
: Thread(false), mHardware(hw) { }
virtual void onFirstRef() {
run("CameraPreviewThread", PRIORITY_URGENT_DISPLAY);
}
virtual bool threadLoop() {
mHardware->previewThread();
// loop until we need to quit
return true;
}
};
void initDefaultParameters();
bool initHeapLocked();
int previewThread();
static int beginAutoFocusThread(void *cookie);
int autoFocusThread();
static int beginPictureThread(void *cookie);
int pictureThread();
mutable Mutex mLock;
int mCameraId;
CameraParameters mParameters;
sp<MemoryHeapBase> mHeap;
sp<MemoryBase> mBuffer;
sp<MemoryHeapBase> mPreviewHeap;
sp<MemoryHeapBase> mRawHeap;
sp<MemoryHeapBase> mRecordHeap;
sp<MemoryBase> mRecordBuffer;
bool mPreviewRunning;
bool mRecordRunning;
int mPreviewFrameSize;
// protected by mLock
sp<PreviewThread> mPreviewThread;
// only used from PreviewThread
int mCurrentPreviewFrame;
void * framebuffer;
bool previewStopped;
int camera_device;
void* mem[4];
int nQueued;
int nDequeued;
V4L2Camera camera;
notify_callback mNotifyFn;
data_callback mDataFn;
data_callback_timestamp mTimestampFn;
void* mUser;
int32_t mMsgEnabled;
};
}; // namespace android
#endif
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