220 lines
9.9 KiB
C
220 lines
9.9 KiB
C
|
/*
|
||
|
|
**
|
||
|
|
** Copyright (C) 2008, 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 ANDROID_SERVERS_CAMERA_CAMERASERVICE_H
|
||
|
|
#define ANDROID_SERVERS_CAMERA_CAMERASERVICE_H
|
||
|
|
|
||
|
|
#include <binder/BinderService.h>
|
||
|
|
|
||
|
|
#include <camera/ICameraService.h>
|
||
|
|
#include <camera/CameraHardwareInterface.h>
|
||
|
|
#include <media/mediarecorder.h>
|
||
|
|
|
||
|
|
/* This needs to be increased if we can have more cameras */
|
||
|
|
#define MAX_CAMERAS 2
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
class MemoryHeapBase;
|
||
|
|
class MediaPlayer;
|
||
|
|
|
||
|
|
class CameraService :
|
||
|
|
public BinderService<CameraService>,
|
||
|
|
public BnCameraService
|
||
|
|
{
|
||
|
|
class Client;
|
||
|
|
friend class BinderService<CameraService>;
|
||
|
|
public:
|
||
|
|
static char const* getServiceName() { return "media.camera"; }
|
||
|
|
|
||
|
|
CameraService();
|
||
|
|
virtual ~CameraService();
|
||
|
|
|
||
|
|
virtual int32_t getNumberOfCameras();
|
||
|
|
virtual status_t getCameraInfo(int cameraId,
|
||
|
|
struct CameraInfo* cameraInfo);
|
||
|
|
virtual sp<ICamera> connect(const sp<ICameraClient>& cameraClient, int cameraId, int mode);
|
||
|
|
virtual void removeClient(const sp<ICameraClient>& cameraClient);
|
||
|
|
virtual sp<Client> getClientById(int cameraId);
|
||
|
|
|
||
|
|
virtual status_t dump(int fd, const Vector<String16>& args);
|
||
|
|
virtual status_t onTransact(uint32_t code, const Parcel& data,
|
||
|
|
Parcel* reply, uint32_t flags);
|
||
|
|
bool isIn3DMode();
|
||
|
|
|
||
|
|
enum sound_kind {
|
||
|
|
SOUND_SHUTTER = 0,
|
||
|
|
SOUND_RECORDING = 1,
|
||
|
|
NUM_SOUNDS
|
||
|
|
};
|
||
|
|
void loadSoundAsync();
|
||
|
|
void loadSound();
|
||
|
|
void playSound(sound_kind kind);
|
||
|
|
void releaseSound();
|
||
|
|
|
||
|
|
private:
|
||
|
|
Mutex mServiceLock;
|
||
|
|
wp<Client> mClient[MAX_CAMERAS]; // protected by mServiceLock
|
||
|
|
int mNumberOfCameras;
|
||
|
|
|
||
|
|
// atomics to record whether the hardware is allocated to some client.
|
||
|
|
volatile int32_t mBusy[MAX_CAMERAS];
|
||
|
|
void setCameraBusy(int cameraId);
|
||
|
|
void setCameraFree(int cameraId);
|
||
|
|
|
||
|
|
// sounds
|
||
|
|
Mutex mSoundLock;
|
||
|
|
sp<MediaPlayer> mSoundPlayer[NUM_SOUNDS];
|
||
|
|
int mSoundRef; // reference count (release all MediaPlayer when 0)
|
||
|
|
|
||
|
|
class Client : public BnCamera
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
// ICamera interface (see ICamera for details)
|
||
|
|
virtual void disconnect();
|
||
|
|
virtual status_t connect(const sp<ICameraClient>& client);
|
||
|
|
virtual status_t lock();
|
||
|
|
virtual status_t unlock();
|
||
|
|
virtual status_t setPreviewDisplay(const sp<ISurface>& surface);
|
||
|
|
virtual void setPreviewCallbackFlag(int flag);
|
||
|
|
// get the recording buffers information from HAL Layer.
|
||
|
|
virtual status_t getBufferInfo(sp<IMemory>& Frame, size_t *alignedSize);
|
||
|
|
|
||
|
|
// encode the YUV data
|
||
|
|
virtual void encodeData();
|
||
|
|
|
||
|
|
virtual status_t startPreview();
|
||
|
|
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 setParameters(const String8& params);
|
||
|
|
virtual String8 getParameters() const;
|
||
|
|
virtual status_t sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
|
||
|
|
virtual status_t takeLiveSnapshot();
|
||
|
|
private:
|
||
|
|
friend class CameraService;
|
||
|
|
Client(const sp<CameraService>& cameraService,
|
||
|
|
const sp<ICameraClient>& cameraClient,
|
||
|
|
const sp<CameraHardwareInterface>& hardware,
|
||
|
|
int cameraId,
|
||
|
|
int cameraFacing,
|
||
|
|
int clientPid);
|
||
|
|
~Client();
|
||
|
|
|
||
|
|
// return our camera client
|
||
|
|
const sp<ICameraClient>& getCameraClient() { return mCameraClient; }
|
||
|
|
|
||
|
|
// check whether the calling process matches mClientPid.
|
||
|
|
status_t checkPid() const;
|
||
|
|
status_t checkPidAndHardware() const; // also check mHardware != 0
|
||
|
|
|
||
|
|
// these are internal functions used to set up preview buffers
|
||
|
|
status_t registerPreviewBuffers();
|
||
|
|
status_t setOverlay(int w = 0, int h = 0);
|
||
|
|
|
||
|
|
// camera operation mode
|
||
|
|
enum camera_mode {
|
||
|
|
CAMERA_PREVIEW_MODE = 0, // frame automatically released
|
||
|
|
CAMERA_RECORDING_MODE = 1, // frame has to be explicitly released by releaseRecordingFrame()
|
||
|
|
};
|
||
|
|
// these are internal functions used for preview/recording
|
||
|
|
status_t startCameraMode(camera_mode mode);
|
||
|
|
status_t startPreviewMode();
|
||
|
|
status_t startRecordingMode();
|
||
|
|
|
||
|
|
// these are static callback functions
|
||
|
|
static void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2, void* user);
|
||
|
|
static void dataCallback(int32_t msgType, const sp<IMemory>& dataPtr, void* user);
|
||
|
|
static void dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr, void* user);
|
||
|
|
// convert client from cookie
|
||
|
|
static sp<Client> getClientFromCookie(void* user);
|
||
|
|
// handlers for messages
|
||
|
|
void handleShutter(image_rect_type *size, bool playShutterSound);
|
||
|
|
void handlePreviewData(const sp<IMemory>& mem);
|
||
|
|
void handlePostview(const sp<IMemory>& mem);
|
||
|
|
void handleRawPicture(const sp<IMemory>& mem);
|
||
|
|
void handleCompressedPicture(const sp<IMemory>& mem);
|
||
|
|
void handleGenericNotify(int32_t msgType, int32_t ext1, int32_t ext2);
|
||
|
|
void handleGenericData(int32_t msgType, const sp<IMemory>& dataPtr);
|
||
|
|
void handleGenericDataTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& dataPtr);
|
||
|
|
|
||
|
|
void copyFrameAndPostCopiedFrame(
|
||
|
|
const sp<ICameraClient>& client,
|
||
|
|
const sp<IMemoryHeap>& heap,
|
||
|
|
size_t offset, size_t size);
|
||
|
|
|
||
|
|
int getOrientation(int orientation, bool mirror);
|
||
|
|
|
||
|
|
// these are initialized in the constructor.
|
||
|
|
sp<CameraService> mCameraService; // immutable after constructor
|
||
|
|
sp<ICameraClient> mCameraClient;
|
||
|
|
int mCameraId; // immutable after constructor
|
||
|
|
int mCameraFacing; // immutable after constructor
|
||
|
|
pid_t mClientPid;
|
||
|
|
sp<CameraHardwareInterface> mHardware; // cleared after disconnect()
|
||
|
|
bool mUseOverlay; // immutable after constructor
|
||
|
|
sp<OverlayRef> mOverlayRef;
|
||
|
|
sp<Overlay> mOverlay;
|
||
|
|
int mOverlayW;
|
||
|
|
int mOverlayH;
|
||
|
|
int mPixelFormat;
|
||
|
|
int mPreviewCallbackFlag;
|
||
|
|
int mOrientation; // Current display orientation
|
||
|
|
// True if display orientation has been changed. This is only used in overlay.
|
||
|
|
int mOrientationChanged;
|
||
|
|
|
||
|
|
// Ensures atomicity among the public methods
|
||
|
|
mutable Mutex mLock;
|
||
|
|
sp<ISurface> mSurface;
|
||
|
|
|
||
|
|
// If the user want us to return a copy of the preview frame (instead
|
||
|
|
// of the original one), we allocate mPreviewBuffer and reuse it if possible.
|
||
|
|
sp<MemoryHeapBase> mPreviewBuffer;
|
||
|
|
|
||
|
|
// We need to avoid the deadlock when the incoming command thread and
|
||
|
|
// the CameraHardwareInterface callback thread both want to grab mLock.
|
||
|
|
// An extra flag is used to tell the callback thread that it should stop
|
||
|
|
// trying to deliver the callback messages if the client is not
|
||
|
|
// interested in it anymore. For example, if the client is calling
|
||
|
|
// stopPreview(), the preview frame messages do not need to be delivered
|
||
|
|
// anymore.
|
||
|
|
|
||
|
|
// This function takes the same parameter as the enableMsgType() and
|
||
|
|
// disableMsgType() functions in CameraHardwareInterface.
|
||
|
|
void enableMsgType(int32_t msgType);
|
||
|
|
void disableMsgType(int32_t msgType);
|
||
|
|
volatile int32_t mMsgEnabled;
|
||
|
|
|
||
|
|
// This function keeps trying to grab mLock, or give up if the message
|
||
|
|
// is found to be disabled. It returns true if mLock is grabbed.
|
||
|
|
bool lockIfMessageWanted(int32_t msgType);
|
||
|
|
void handleLiveShot(const sp<IMemory>& mem);
|
||
|
|
int mNumJpegSnapshots;
|
||
|
|
int mNumRawSnapshots;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace android
|
||
|
|
|
||
|
|
#endif
|