/*
* Copyright (C) Texas Instruments - http://www.ti.com/
*
* 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_HARDWARE_CAMERA_HARDWARE_H
#define ANDROID_HARDWARE_CAMERA_HARDWARE_H
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <utils/Log.h>
#include <utils/threads.h>
#include <linux/videodev2.h>
#include "binder/MemoryBase.h"
#include "binder/MemoryHeapBase.h"
#include <utils/threads.h>
#include <camera/CameraParameters.h>
#include <hardware/camera.h>
#include "MessageQueue.h"
#include "Semaphore.h"
#include "CameraProperties.h"
#include "DebugUtils.h"
#include "SensorListener.h"
#include <ui/GraphicBufferAllocator.h>
#include <ui/GraphicBuffer.h>
#define MIN_WIDTH 640
#define MIN_HEIGHT 480
#define PICTURE_WIDTH 3264 /* 5mp - 2560. 8mp - 3280 */ /* Make sure it is a multiple of 16. */
#define PICTURE_HEIGHT 2448 /* 5mp - 2048. 8mp - 2464 */ /* Make sure it is a multiple of 16. */
#define PREVIEW_WIDTH 176
#define PREVIEW_HEIGHT 144
#define PIXEL_FORMAT V4L2_PIX_FMT_UYVY
#define VIDEO_FRAME_COUNT_MAX 8 //NUM_OVERLAY_BUFFERS_REQUESTED
#define MAX_CAMERA_BUFFERS 8 //NUM_OVERLAY_BUFFERS_REQUESTED
#define MAX_ZOOM 3
#define THUMB_WIDTH 80
#define THUMB_HEIGHT 60
#define PIX_YUV422I 0
#define PIX_YUV420P 1
#define SATURATION_OFFSET 100
#define SHARPNESS_OFFSET 100
#define CONTRAST_OFFSET 100
#define CAMHAL_GRALLOC_USAGE GRALLOC_USAGE_HW_TEXTURE | \
GRALLOC_USAGE_HW_RENDER | \
GRALLOC_USAGE_SW_READ_RARELY | \
GRALLOC_USAGE_SW_WRITE_NEVER
//Enables Absolute PPM measurements in logcat
#define PPM_INSTRUMENTATION_ABS 1
#define LOCK_BUFFER_TRIES 5
#define HAL_PIXEL_FORMAT_NV12 0x100
#define CAMHAL_LOGI ALOGI
//Uncomment to enable more verbose/debug logs
//#define DEBUG_LOG
///Camera HAL Logging Functions
#ifndef DEBUG_LOG
#define CAMHAL_LOGDA(str)
#define CAMHAL_LOGDB(str, ...)
#define CAMHAL_LOGVA(str)
#define CAMHAL_LOGVB(str, ...)
#define CAMHAL_LOGEA ALOGE
#define CAMHAL_LOGEB ALOGE
#undef LOG_FUNCTION_NAME
#undef LOG_FUNCTION_NAME_EXIT
#define LOG_FUNCTION_NAME
#define LOG_FUNCTION_NAME_EXIT
#else
#define CAMHAL_LOGDA DBGUTILS_LOGDA
#define CAMHAL_LOGDB DBGUTILS_LOGDB
#define CAMHAL_LOGVA DBGUTILS_LOGVA
#define CAMHAL_LOGVB DBGUTILS_LOGVB
#define CAMHAL_LOGEA DBGUTILS_LOGEA
#define CAMHAL_LOGEB DBGUTILS_LOGEB
#endif
#define NONNEG_ASSIGN(x,y) \
if(x > -1) \
y = x
namespace android {
#define PARAM_BUFFER 6000
///Forward declarations
class CameraHal;
class CameraFrame;
class CameraHalEvent;
class DisplayFrame;
class CameraArea : public RefBase
{
public:
CameraArea(ssize_t top,
ssize_t left,
ssize_t bottom,
ssize_t right,
size_t weight) : mTop(top),
mLeft(left),
mBottom(bottom),
mRight(right),
mWeight(weight) {}
status_t transfrom(size_t width,
size_t height,
size_t &top,
size_t &left,
size_t &areaWidth,
size_t &areaHeight);
bool isValid()
{
return ( ( 0 != mTop ) || ( 0 != mLeft ) || ( 0 != mBottom ) || ( 0 != mRight) );
}
bool isZeroArea()
{
return ( (0 == mTop ) && ( 0 == mLeft ) && ( 0 == mBottom )
&& ( 0 == mRight ) && ( 0 == mWeight ));
}
size_t getWeight()
{
return mWeight;
}
bool compare(const sp<CameraArea> &area);
static status_t parseAreas(const char *area,
size_t areaLength,
Vector< sp<CameraArea> > &areas);
static status_t checkArea(ssize_t top,
ssize_t left,
ssize_t bottom,
ssize_t right,
ssize_t weight);
static bool areAreasDifferent(Vector< sp<CameraArea> > &, Vector< sp<CameraArea> > &);
protected:
static const ssize_t TOP = -1000;
static const ssize_t LEFT = -1000;
static const ssize_t BOTTOM = 1000;
static const ssize_t RIGHT = 1000;
static const ssize_t WEIGHT_MIN = 1;
static const ssize_t WEIGHT_MAX = 1000;
ssize_t mTop;
ssize_t mLeft;
ssize_t mBottom;
ssize_t mRight;
size_t mWeight;
};
class CameraFDResult : public RefBase
{
public:
CameraFDResult() : mFaceData(NULL) {};
CameraFDResult(camera_frame_metadata_t *faces) : mFaceData(faces) {};
virtual ~CameraFDResult() {
if ( ( NULL != mFaceData ) && ( NULL != mFaceData->faces ) ) {
free(mFaceData->faces);
free(mFaceData);
mFaceData=NULL;
}
if(( NULL != mFaceData ))
{
free(mFaceData);
mFaceData = NULL;
}
}
camera_frame_metadata_t *getFaceResult() { return mFaceData; };
static const ssize_t TOP = -1000;
static const ssize_t LEFT = -1000;
static const ssize_t BOTTOM = 1000;
static const ssize_t RIGHT = 1000;
static const ssize_t INVALID_DATA = -2000;
private:
camera_frame_metadata_t *mFaceData;
};
class CameraFrame
{
public:
enum FrameType
{
PREVIEW_FRAME_SYNC = 0x1, ///SYNC implies that the frame needs to be explicitly returned after consuming in order to be filled by camera again
PREVIEW_FRAME = 0x2 , ///Preview frame includes viewfinder and snapshot frames
IMAGE_FRAME_SYNC = 0x4, ///Image Frame is the image capture output frame
IMAGE_FRAME = 0x8,
VIDEO_FRAME_SYNC = 0x10, ///Timestamp will be updated for these frames
VIDEO_FRAME = 0x20,
FRAME_DATA_SYNC = 0x40, ///Any extra data assosicated with the frame. Always synced with the frame
FRAME_DATA= 0x80,
RAW_FRAME = 0x100,
SNAPSHOT_FRAME = 0x200,
ALL_FRAMES = 0xFFFF ///Maximum of 16 frame types supported
};
enum FrameQuirks
{
ENCODE_RAW_YUV422I_TO_JPEG = 0x1 << 0,
HAS_EXIF_DATA = 0x1 << 1,
};
//default contrustor
CameraFrame():
mCookie(NULL),
mCookie2(NULL),
mBuffer(NULL),
mFrameType(0),
mTimestamp(0),
mWidth(0),
mHeight(0),
mOffset(0),
mAlignment(0),
mFd(0),
mLength(0),
mFrameMask(0),
mQuirks(0) {
mYuv[0] = NULL;
mYuv[1] = NULL;
}
//copy constructor
CameraFrame(const CameraFrame &frame) :
mCookie(frame.mCookie),
mCookie2(frame.mCookie2),
mBuffer(frame.mBuffer),
mFrameType(frame.mFrameType),
mTimestamp(frame.mTimestamp),
mWidth(frame.mWidth),
mHeight(frame.mHeight),
mOffset(frame.mOffset),
mAlignment(frame.mAlignment),
mFd(frame.mFd),
mLength(frame.mLength),
mFrameMask(frame.mFrameMask),
mQuirks(frame.mQuirks) {
mYuv[0] = frame.mYuv[0];
mYuv[1] = frame.mYuv[1];
}
void *mCookie;
void *mCookie2;
void *mBuffer;
int mFrameType;
nsecs_t mTimestamp;
unsigned int mWidth, mHeight;
uint32_t mOffset;
unsigned int mAlignment;
int mFd;
size_t mLength;
unsigned mFrameMask;
unsigned int mQuirks;
unsigned int mYuv[2];
///@todo add other member vars like stride etc
};
enum CameraHalError
{
CAMERA_ERROR_FATAL = 0x1, //Fatal errors can only be recovered by restarting media server
CAMERA_ERROR_HARD = 0x2, // Hard errors are hardware hangs that may be recoverable by resetting the hardware internally within the adapter
CAMERA_ERROR_SOFT = 0x4, // Soft errors are non fatal errors that can be recovered from without needing to stop use-case
};
///Common Camera Hal Event class which is visible to CameraAdapter,DisplayAdapter and AppCallbackNotifier
///@todo Rename this class to CameraEvent
class CameraHalEvent
{
public:
//Enums
enum CameraHalEventType {
NO_EVENTS = 0x0,
EVENT_FOCUS_LOCKED = 0x1,
EVENT_FOCUS_ERROR = 0x2,
EVENT_ZOOM_INDEX_REACHED = 0x4,
EVENT_SHUTTER = 0x8,
EVENT_FACE = 0x10,
///@remarks Future enum related to display, like frame displayed event, could be added here
ALL_EVENTS = 0xFFFF ///Maximum of 16 event types supported
};
enum FocusStatus {
FOCUS_STATUS_SUCCESS = 0x1,
FOCUS_STATUS_FAIL = 0x2,
FOCUS_STATUS_PENDING = 0x4,
FOCUS_STATUS_DONE = 0x8,
};
///Class declarations
///@remarks Add a new class for a new event type added above
//Shutter event specific data
typedef struct ShutterEventData_t {
bool shutterClosed;
}ShutterEventData;
///Focus event specific data
typedef struct FocusEventData_t {
FocusStatus focusStatus;
int currentFocusValue;
} FocusEventData;
///Zoom specific event data
typedef struct ZoomEventData_t {
int currentZoomIndex;
bool targetZoomIndexReached;
} ZoomEventData;
typedef struct FaceData_t {
ssize_t top;
ssize_t left;
ssize_t bottom;
ssize_t right;
size_t score;
} FaceData;
typedef sp<CameraFDResult> FaceEventData;
class CameraHalEventData : public RefBase{
public:
CameraHalEvent::FocusEventData focusEvent;
CameraHalEvent::ZoomEventData zoomEvent;
CameraHalEvent::ShutterEventData shutterEvent;
CameraHalEvent::FaceEventData faceEvent;
};
//default contrustor
CameraHalEvent():
mCookie(NULL),
mEventType(NO_EVENTS) {}
//copy constructor
CameraHalEvent(const CameraHalEvent &event) :
mCookie(event.mCookie),
mEventType(event.mEventType),
mEventData(event.mEventData) {};
void* mCookie;
CameraHalEventType mEventType;
sp<CameraHalEventData> mEventData;
};
/// Have a generic callback class based on template - to adapt CameraFrame and Event
typedef void (*frame_callback) (CameraFrame *cameraFrame);
typedef void (*event_callback) (CameraHalEvent *event);
//signals CameraHAL to relase image buffers
typedef void (*release_image_buffers_callback) (void *userData);
typedef void (*end_image_capture_callback) (void *userData);
/**
* Interface class implemented by classes that have some events to communicate to dependendent classes
* Dependent classes use this interface for registering for events
*/
class MessageNotifier
{
public:
static const uint32_t EVENT_BIT_FIELD_POSITION;
static const uint32_t FRAME_BIT_FIELD_POSITION;
///@remarks Msg type comes from CameraFrame and CameraHalEvent classes
/// MSB 16 bits is for events and LSB 16 bits is for frame notifications
/// FrameProvider and EventProvider classes act as helpers to event/frame
/// consumers to call this api
virtual void enableMsgType(int32_t msgs, frame_callback frameCb=NULL, event_callback eventCb=NULL, void* cookie=NULL) = 0;
virtual void disableMsgType(int32_t msgs, void* cookie) = 0;
virtual ~MessageNotifier() {};
};
class ErrorNotifier : public virtual RefBase
{
public:
virtual void errorNotify(int error) = 0;
virtual ~ErrorNotifier() {};
};
/**
* Interace class abstraction for Camera Adapter to act as a frame provider
* This interface is fully implemented by Camera Adapter
*/
class FrameNotifier : public MessageNotifier
{
public:
virtual void returnFrame(void* frameBuf, CameraFrame::FrameType frameType) = 0;
virtual void addFramePointers(void *frameBuf, void *buf) = 0;
virtual void removeFramePointers() = 0;
virtual ~FrameNotifier() {};
};
/** * Wrapper class around Frame Notifier, which is used by display and notification classes for interacting with Camera Adapter
*/
class FrameProvider
{
FrameNotifier* mFrameNotifier;
void* mCookie;
frame_callback mFrameCallback;
public:
FrameProvider(FrameNotifier *fn, void* cookie, frame_callback frameCallback)
:mFrameNotifier(fn), mCookie(cookie),mFrameCallback(frameCallback) { }
int enableFrameNotification(int32_t frameTypes);
int disableFrameNotification(int32_t frameTypes);
int returnFrame(void *frameBuf, CameraFrame::FrameType frameType);
void addFramePointers(void *frameBuf, void *buf);
void removeFramePointers();
};
/** Wrapper class around MessageNotifier, which is used by display and notification classes for interacting with
* Camera Adapter
*/
class EventProvider
{
public:
MessageNotifier* mEventNotifier;
void* mCookie;
event_callback mEventCallback;
public:
EventProvider(MessageNotifier *mn, void* cookie, event_callback eventCallback)
:mEventNotifier(mn), mCookie(cookie), mEventCallback(eventCallback) {}
int enableEventNotification(int32_t eventTypes);
int disableEventNotification(int32_t eventTypes);
};
/*
* Interface for providing buffers
*/
class BufferProvider
{
public:
virtual void* allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs) = 0;
//additional methods used for memory mapping
virtual uint32_t * getOffsets() = 0;
virtual int getFd() = 0;
virtual int freeBuffer(void* buf) = 0;
virtual ~BufferProvider() {}
};
/**
* Class for handling data and notify callbacks to application
*/
class AppCallbackNotifier: public ErrorNotifier , public virtual RefBase
{
public:
///Constants
static const int NOTIFIER_TIMEOUT;
static const int32_t MAX_BUFFERS = 8;
enum NotifierCommands
{
NOTIFIER_CMD_PROCESS_EVENT,
NOTIFIER_CMD_PROCESS_FRAME,
NOTIFIER_CMD_PROCESS_ERROR
};
enum NotifierState
{
NOTIFIER_STOPPED,
NOTIFIER_STARTED,
NOTIFIER_EXITED
};
public:
~AppCallbackNotifier();
///Initialzes the callback notifier, creates any resources required
status_t initialize();
///Starts the callbacks to application
status_t start();
///Stops the callbacks from going to application
status_t stop();
void setEventProvider(int32_t eventMask, MessageNotifier * eventProvider);
void setFrameProvider(FrameNotifier *frameProvider);
//All sub-components of Camera HAL call this whenever any error happens
virtual void errorNotify(int error);
status_t startPreviewCallbacks(CameraParameters ¶ms, void *buffers, uint32_t *offsets, int fd, size_t length, size_t count);
status_t stopPreviewCallbacks();
status_t enableMsgType(int32_t msgType);
status_t disableMsgType(int32_t msgType);
//API for enabling/disabling measurement data
void setMeasurements(bool enable);
//thread loops
bool notificationThread();
///Notification callback functions
static void frameCallbackRelay(CameraFrame* caFrame);
static void eventCallbackRelay(CameraHalEvent* chEvt);
void frameCallback(CameraFrame* caFrame);
void eventCallback(CameraHalEvent* chEvt);
void flushAndReturnFrames();
void setCallbacks(CameraHal *cameraHal,
camera_notify_callback notify_cb,
camera_data_callback data_cb,
camera_data_timestamp_callback data_cb_timestamp,
camera_request_memory get_memory,
void *user);
//Set Burst mode
void setBurst(bool burst);
//Notifications from CameraHal for video recording case
status_t startRecording();
status_t stopRecording();
status_t initSharedVideoBuffers(void *buffers, uint32_t *offsets, int fd, size_t length, size_t count, void *vidBufs);
status_t releaseRecordingFrame(const void *opaque);
status_t useMetaDataBufferMode(bool enable);
void EncoderDoneCb(void*, void*, CameraFrame::FrameType type, void* cookie1, void* cookie2);
void useVideoBuffers(bool useVideoBuffers);
bool getUesVideoBuffers();
void setVideoRes(int width, int height);
void flushEventQueue();
//Internal class definitions
class NotificationThread : public Thread {
AppCallbackNotifier* mAppCallbackNotifier;
TIUTILS::MessageQueue mNotificationThreadQ;
public:
enum NotificationThreadCommands
{
NOTIFIER_START,
NOTIFIER_STOP,
NOTIFIER_EXIT,
};
public:
NotificationThread(AppCallbackNotifier* nh)
: Thread(false), mAppCallbackNotifier(nh) { }
virtual bool threadLoop() {
return mAppCallbackNotifier->notificationThread();
}
TIUTILS::MessageQueue &msgQ() { return mNotificationThreadQ;}
};
//Friend declarations
friend class NotificationThread;
private:
void notifyEvent();
void notifyFrame();
bool processMessage();
void releaseSharedVideoBuffers();
status_t dummyRaw();
void copyAndSendPictureFrame(CameraFrame* frame, int32_t msgType);
void copyAndSendPreviewFrame(CameraFrame* frame, int32_t msgType);
private:
mutable Mutex mLock;
mutable Mutex mBurstLock;
CameraHal* mCameraHal;
camera_notify_callback mNotifyCb;
camera_data_callback mDataCb;
camera_data_timestamp_callback mDataCbTimestamp;
camera_request_memory mRequestMemory;
void *mCallbackCookie;
//Keeps Video MemoryHeaps and Buffers within
//these objects
KeyedVector<unsigned int, unsigned int> mVideoHeaps;
KeyedVector<unsigned int, unsigned int> mVideoBuffers;
KeyedVector<unsigned int, unsigned int> mVideoMap;
//Keeps list of Gralloc handles and associated Video Metadata Buffers
KeyedVector<uint32_t, uint32_t> mVideoMetadataBufferMemoryMap;
KeyedVector<uint32_t, uint32_t> mVideoMetadataBufferReverseMap;
bool mBufferReleased;
sp< NotificationThread> mNotificationThread;
EventProvider *mEventProvider;
FrameProvider *mFrameProvider;
TIUTILS::MessageQueue mEventQ;
TIUTILS::MessageQueue mFrameQ;
NotifierState mNotifierState;
bool mPreviewing;
camera_memory_t* mPreviewMemory;
unsigned char* mPreviewBufs[MAX_BUFFERS];
int mPreviewBufCount;
const char *mPreviewPixelFormat;
KeyedVector<unsigned int, sp<MemoryHeapBase> > mSharedPreviewHeaps;
KeyedVector<unsigned int, sp<MemoryBase> > mSharedPreviewBuffers;
//Burst mode active
bool mBurst;
mutable Mutex mRecordingLock;
bool mRecording;
bool mMeasurementEnabled;
bool mUseMetaDataBufferMode;
bool mRawAvailable;
bool mUseVideoBuffers;
int mVideoWidth;
int mVideoHeight;
};
/**
* Class used for allocating memory for JPEG bit stream buffers, output buffers of camera in no overlay case
*/
class MemoryManager : public BufferProvider, public virtual RefBase
{
public:
MemoryManager():mIonFd(-1){ }
///Initializes the memory manager creates any resources required
status_t initialize() { return NO_ERROR; }
int setErrorHandler(ErrorNotifier *errorNotifier);
virtual void* allocateBuffer(int width, int height, const char* format, int &bytes, int numBufs);
virtual uint32_t * getOffsets();
virtual int getFd() ;
virtual int freeBuffer(void* buf);
private:
sp<ErrorNotifier> mErrorNotifier;
int mIonFd;
KeyedVector<unsigned int, unsigned int> mIonHandleMap;
KeyedVector<unsigned int, unsigned int> mIonFdMap;
KeyedVector<unsigned int, unsigned int> mIonBufLength;
};
/**
* CameraAdapter interface class
* Concrete classes derive from this class and provide implementations based on the specific camera h/w interface
*/
class CameraAdapter: public FrameNotifier, public virtual RefBase
{
protected:
enum AdapterActiveStates {
INTIALIZED_ACTIVE = 1 << 0,
LOADED_PREVIEW_ACTIVE = 1 << 1,
PREVIEW_ACTIVE = 1 << 2,
LOADED_CAPTURE_ACTIVE = 1 << 3,
CAPTURE_ACTIVE = 1 << 4,
BRACKETING_ACTIVE = 1 << 5,
AF_ACTIVE = 1 << 6,
ZOOM_ACTIVE = 1 << 7,
VIDEO_ACTIVE = 1 << 8,
};
public:
typedef struct
{
void *mBuffers;
uint32_t *mOffsets;
int mFd;
size_t mLength;
size_t mCount;
size_t mMaxQueueable;
} BuffersDescriptor;
enum CameraCommands
{
CAMERA_START_PREVIEW = 0,
CAMERA_STOP_PREVIEW = 1,
CAMERA_START_VIDEO = 2,
CAMERA_STOP_VIDEO = 3,
CAMERA_START_IMAGE_CAPTURE = 4,
CAMERA_STOP_IMAGE_CAPTURE = 5,
CAMERA_PERFORM_AUTOFOCUS = 6,
CAMERA_CANCEL_AUTOFOCUS = 7,
CAMERA_PREVIEW_FLUSH_BUFFERS = 8,
CAMERA_START_SMOOTH_ZOOM = 9,
CAMERA_STOP_SMOOTH_ZOOM = 10,
CAMERA_USE_BUFFERS_PREVIEW = 11,
CAMERA_SET_TIMEOUT = 12,
CAMERA_CANCEL_TIMEOUT = 13,
CAMERA_START_BRACKET_CAPTURE = 14,
CAMERA_STOP_BRACKET_CAPTURE = 15,
CAMERA_QUERY_RESOLUTION_PREVIEW = 16,
CAMERA_QUERY_BUFFER_SIZE_IMAGE_CAPTURE = 17,
CAMERA_QUERY_BUFFER_SIZE_PREVIEW_DATA = 18,
CAMERA_USE_BUFFERS_IMAGE_CAPTURE = 19,
CAMERA_USE_BUFFERS_PREVIEW_DATA = 20,
CAMERA_TIMEOUT_EXPIRED = 21,
CAMERA_START_FD = 22,
CAMERA_STOP_FD = 23,
CAMERA_SWITCH_TO_EXECUTING = 24,
};
enum CameraMode
{
CAMERA_PREVIEW,
CAMERA_IMAGE_CAPTURE,
CAMERA_VIDEO,
CAMERA_MEASUREMENT
};
enum AdapterState {
INTIALIZED_STATE = INTIALIZED_ACTIVE,
LOADED_PREVIEW_STATE = LOADED_PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
PREVIEW_STATE = PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
LOADED_CAPTURE_STATE = LOADED_CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
CAPTURE_STATE = CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
BRACKETING_STATE = BRACKETING_ACTIVE | CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE ,
AF_STATE = AF_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
ZOOM_STATE = ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
VIDEO_STATE = VIDEO_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
VIDEO_AF_STATE = VIDEO_ACTIVE | AF_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
VIDEO_ZOOM_STATE = VIDEO_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
VIDEO_LOADED_CAPTURE_STATE = VIDEO_ACTIVE | LOADED_CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
VIDEO_CAPTURE_STATE = VIDEO_ACTIVE | CAPTURE_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
AF_ZOOM_STATE = AF_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
BRACKETING_ZOOM_STATE = BRACKETING_ACTIVE | ZOOM_ACTIVE | PREVIEW_ACTIVE | INTIALIZED_ACTIVE,
};
public:
///Initialzes the camera adapter creates any resources required
virtual int initialize(CameraProperties::Properties*) = 0;
virtual int setErrorHandler(ErrorNotifier *errorNotifier) = 0;
//Message/Frame notification APIs
virtual void enableMsgType(int32_t msgs,
frame_callback callback = NULL,
event_callback eventCb = NULL,
void *cookie = NULL) = 0;
virtual void disableMsgType(int32_t msgs, void* cookie) = 0;
virtual void returnFrame(void* frameBuf, CameraFrame::FrameType frameType) = 0;
virtual void addFramePointers(void *frameBuf, void *buf) = 0;
virtual void removeFramePointers() = 0;
//APIs to configure Camera adapter and get the current parameter set
virtual int setParameters(const CameraParameters& params) = 0;
virtual void getParameters(CameraParameters& params) = 0;
//API to flush the buffers from Camera
status_t flushBuffers()
{
return sendCommand(CameraAdapter::CAMERA_PREVIEW_FLUSH_BUFFERS);
}
//Registers callback for returning image buffers back to CameraHAL
virtual int registerImageReleaseCallback(release_image_buffers_callback callback, void *user_data) = 0;
//Registers callback, which signals a completed image capture
virtual int registerEndCaptureCallback(end_image_capture_callback callback, void *user_data) = 0;
//API to send a command to the camera
virtual status_t sendCommand(CameraCommands operation, int value1=0, int value2=0, int value3=0) = 0;
virtual ~CameraAdapter() {};
//Retrieves the current Adapter state
virtual AdapterState getState() = 0;
//Retrieves the next Adapter state
virtual AdapterState getNextState() = 0;
// Receive orientation events from CameraHal
virtual void onOrientationEvent(uint32_t orientation, uint32_t tilt) = 0;
// Rolls the state machine back to INTIALIZED_STATE from the current state
virtual status_t rollbackToInitializedState() = 0;
// Retrieves the current Adapter state - for internal use (not locked)
virtual status_t getState(AdapterState &state) = 0;
// Retrieves the next Adapter state - for internal use (not locked)
virtual status_t getNextState(AdapterState &state) = 0;
protected:
//The first two methods will try to switch the adapter state.
//Every call to setState() should be followed by a corresponding
//call to commitState(). If the state switch fails, then it will
//get reset to the previous state via rollbackState().
virtual status_t setState(CameraCommands operation) = 0;
virtual status_t commitState() = 0;
virtual status_t rollbackState() = 0;
};
class DisplayAdapter : public BufferProvider, public virtual RefBase
{
public:
typedef struct S3DParameters_t
{
int mode;
int framePacking;
int order;
int subSampling;
} S3DParameters;
///Initializes the display adapter creates any resources required
virtual int initialize() = 0;
virtual int setPreviewWindow(struct preview_stream_ops *window) = 0;
virtual int setFrameProvider(FrameNotifier *frameProvider) = 0;
virtual int setErrorHandler(ErrorNotifier *errorNotifier) = 0;
virtual int enableDisplay(int width, int height, struct timeval *refTime = NULL, S3DParameters *s3dParams = NULL) = 0;
virtual int disableDisplay(bool cancel_buffer = true) = 0;
//Used for Snapshot review temp. pause
virtual int pauseDisplay(bool pause) = 0;
#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
//Used for shot to snapshot measurement
virtual int setSnapshotTimeRef(struct timeval *refTime = NULL) = 0;
#endif
virtual int useBuffers(void *bufArr, int num) = 0;
virtual bool supportsExternalBuffering() = 0;
// Get max queueable buffers display supports
// This function should only be called after
// allocateBuffer
virtual int maxQueueableBuffers(unsigned int& queueable) = 0;
};
static void releaseImageBuffers(void *userData);
static void endImageCapture(void *userData);
/**
Implementation of the Android Camera hardware abstraction layer
This class implements the interface methods defined in CameraHardwareInterface
for the OMAP4 platform
*/
class CameraHal
{
public:
///Constants
static const int NO_BUFFERS_PREVIEW;
static const int NO_BUFFERS_IMAGE_CAPTURE;
static const uint32_t VFR_SCALE = 1000;
/*--------------------Interface Methods---------------------------------*/
//@{
public:
/** Set the notification and data callbacks */
void setCallbacks(camera_notify_callback notify_cb,
camera_data_callback data_cb,
camera_data_timestamp_callback data_cb_timestamp,
camera_request_memory get_memory,
void *user);
/** Receives orientation events from SensorListener **/
void onOrientationEvent(uint32_t orientation, uint32_t tilt);
/**
* The following three functions all take a msgtype,
* which is a bitmask of the messages defined in
* include/ui/Camera.h
*/
/**
* Enable a message, or set of messages.
*/
void enableMsgType(int32_t msgType);
/**
* Disable a message, or a set of messages.
*/
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.
*/
int msgTypeEnabled(int32_t msgType);
/**
* Start preview mode.
*/
int startPreview();
/**
* Only used if overlays are used for camera preview.
*/
int setPreviewWindow(struct preview_stream_ops *window);
/**
* Stop a previously started preview.
*/
void stopPreview();
/**
* Returns true if preview is enabled.
*/
bool previewEnabled();
/**
* Start record mode. When a record image is available a CAMERA_MSG_VIDEO_FRAME
* message is sent with the corresponding frame. Every record frame must be released
* by calling releaseRecordingFrame().
*/
int startRecording();
/**
* Stop a previously started recording.
*/
void stopRecording();
/**
* Returns true if recording is enabled.
*/
int recordingEnabled();
/**
* Release a record frame previously returned by CAMERA_MSG_VIDEO_FRAME.
*/
void releaseRecordingFrame(const void *opaque);
/**
* Start auto focus, the notification callback routine is called
* with CAMERA_MSG_FOCUS once when focusing is complete. autoFocus()
* will be called again if another auto focus is needed.
*/
int autoFocus();
/**
* Cancels auto-focus function. If the auto-focus is still in progress,
* this function will cancel it. Whether the auto-focus is in progress
* or not, this function will return the focus position to the default.
* If the camera does not support auto-focus, this is a no-op.
*/
int cancelAutoFocus();
/**
* Take a picture.
*/
int takePicture();
/**
* Cancel a picture that was started with takePicture. Calling this
* method when no picture is being taken is a no-op.
*/
int cancelPicture();
/** Set the camera parameters. */
int setParameters(const char* params);
int setParameters(const CameraParameters& params);
/** Return the camera parameters. */
char* getParameters();
void putParameters(char *);
/**
* Send command to camera driver.
*/
int sendCommand(int32_t cmd, int32_t arg1, int32_t arg2);
/**
* Release the hardware resources owned by this object. Note that this is
* *not* done in the destructor.
*/
void release();
/**
* Dump state of the camera hardware
*/
int dump(int fd) const;
status_t storeMetaDataInBuffers(bool enable);
//@}
/*--------------------Internal Member functions - Public---------------------------------*/
public:
/** @name internalFunctionsPublic */
//@{
/** Constructor of CameraHal */
CameraHal(int cameraId);
// Destructor of CameraHal
~CameraHal();
/** Initialize CameraHal */
status_t initialize(CameraProperties::Properties*);
/** Deinitialize CameraHal */
void deinitialize();
#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
//Uses the constructor timestamp as a reference to calcluate the
// elapsed time
static void PPM(const char *);
//Uses a user provided timestamp as a reference to calcluate the
// elapsed time
static void PPM(const char *, struct timeval*, ...);
#endif
/** Free image bufs */
status_t freeImageBufs();
//Signals the end of image capture
status_t signalEndImageCapture();
//Events
static void eventCallbackRelay(CameraHalEvent* event);
void eventCallback(CameraHalEvent* event);
void setEventProvider(int32_t eventMask, MessageNotifier * eventProvider);
/*--------------------Internal Member functions - Private---------------------------------*/
private:
/** @name internalFunctionsPrivate */
//@{
/** Set the camera parameters specific to Video Recording. */
bool setVideoModeParameters(const CameraParameters&);
/** Reset the camera parameters specific to Video Recording. */
bool resetVideoModeParameters();
/** Restart the preview with setParameter. */
status_t restartPreview();
status_t parseResolution(const char *resStr, int &width, int &height);
void insertSupportedParams();
/** Allocate preview data buffers */
status_t allocPreviewDataBufs(size_t size, size_t bufferCount);
/** Free preview data buffers */
status_t freePreviewDataBufs();
/** Allocate preview buffers */
status_t allocPreviewBufs(int width, int height, const char* previewFormat, unsigned int bufferCount, unsigned int &max_queueable);
/** Allocate video buffers */
status_t allocVideoBufs(uint32_t width, uint32_t height, uint32_t bufferCount);
/** Allocate image capture buffers */
status_t allocImageBufs(unsigned int width, unsigned int height, size_t length, const char* previewFormat, unsigned int bufferCount);
/** Free preview buffers */
status_t freePreviewBufs();
/** Free video bufs */
status_t freeVideoBufs(void *bufs);
//Check if a given resolution is supported by the current camera
//instance
bool isResolutionValid(unsigned int width, unsigned int height, const char *supportedResolutions);
//Check if a given parameter is supported by the current camera
// instance
bool isParameterValid(const char *param, const char *supportedParams);
bool isParameterValid(int param, const char *supportedParams);
status_t doesSetParameterNeedUpdate(const char *new_param, const char *old_params, bool &update);
/** Initialize default parameters */
void initDefaultParameters();
void dumpProperties(CameraProperties::Properties& cameraProps);
status_t startImageBracketing();
status_t stopImageBracketing();
void setShutter(bool enable);
void forceStopPreview();
void selectFPSRange(int framerate, int *min_fps, int *max_fps);
void setPreferredPreviewRes(int width, int height);
void resetPreviewRes(CameraParameters *mParams, int width, int height);
//@}
/*----------Member variables - Public ---------------------*/
public:
int32_t mMsgEnabled;
bool mRecordEnabled;
nsecs_t mCurrentTime;
bool mFalsePreview;
bool mPreviewEnabled;
uint32_t mTakePictureQueue;
bool mBracketingEnabled;
bool mBracketingRunning;
//User shutter override
bool mShutterEnabled;
bool mMeasurementEnabled;
//Google's parameter delimiter
static const char PARAMS_DELIMITER[];
CameraAdapter *mCameraAdapter;
sp<AppCallbackNotifier> mAppCallbackNotifier;
sp<DisplayAdapter> mDisplayAdapter;
sp<MemoryManager> mMemoryManager;
sp<IMemoryHeap> mPictureHeap;
int* mGrallocHandles;
bool mFpsRangeChangedByApp;
///static member vars
#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
//Timestamp from the CameraHal constructor
static struct timeval ppm_start;
//Timestamp of the autoFocus command
static struct timeval mStartFocus;
//Timestamp of the startPreview command
static struct timeval mStartPreview;
//Timestamp of the takePicture command
static struct timeval mStartCapture;
#endif
/*----------Member variables - Private ---------------------*/
private:
bool mDynamicPreviewSwitch;
//keeps paused state of display
bool mDisplayPaused;
//Index of current camera adapter
int mCameraIndex;
mutable Mutex mLock;
sp<SensorListener> mSensorListener;
void* mCameraAdapterHandle;
CameraParameters mParameters;
bool mPreviewRunning;
bool mPreviewStateOld;
bool mRecordingEnabled;
EventProvider *mEventProvider;
int32_t *mPreviewDataBufs;
uint32_t *mPreviewDataOffsets;
int mPreviewDataFd;
int mPreviewDataLength;
int32_t *mImageBufs;
uint32_t *mImageOffsets;
int mImageFd;
int mImageLength;
int32_t *mPreviewBufs;
uint32_t *mPreviewOffsets;
int mPreviewLength;
int mPreviewFd;
int32_t *mVideoBufs;
uint32_t *mVideoOffsets;
int mVideoFd;
int mVideoLength;
int mBracketRangePositive;
int mBracketRangeNegative;
///@todo Rename this as preview buffer provider
BufferProvider *mBufProvider;
BufferProvider *mVideoBufProvider;
CameraProperties::Properties* mCameraProperties;
bool mPreviewStartInProgress;
bool mSetPreviewWindowCalled;
uint32_t mPreviewWidth;
uint32_t mPreviewHeight;
int32_t mMaxZoomSupported;
int mVideoWidth;
int mVideoHeight;
};
}; // namespace android
#endif