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/*
* 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.
*/
#include "CameraHal.h"
#include <ui/GraphicBufferMapper.h>
#include <hal_public.h>
//temporarily define format here
#define HAL_PIXEL_FORMAT_TI_NV12 0x100
namespace android {
/**
* Display handler class - This class basically handles the buffer posting to display
*/
class ANativeWindowDisplayAdapter : public DisplayAdapter
{
public:
typedef struct
{
void *mBuffer;
void *mUser;
int mOffset;
int mWidth;
int mHeight;
int mWidthStride;
int mHeightStride;
int mLength;
CameraFrame::FrameType mType;
} DisplayFrame;
enum DisplayStates
{
DISPLAY_INIT = 0,
DISPLAY_STARTED,
DISPLAY_STOPPED,
DISPLAY_EXITED
};
public:
ANativeWindowDisplayAdapter();
virtual ~ANativeWindowDisplayAdapter();
///Initializes the display adapter creates any resources required
virtual status_t initialize();
virtual int setPreviewWindow(struct preview_stream_ops *window);
virtual int setFrameProvider(FrameNotifier *frameProvider);
virtual int setErrorHandler(ErrorNotifier *errorNotifier);
virtual int enableDisplay(int width, int height, struct timeval *refTime = NULL, S3DParameters *s3dParams = NULL);
virtual int disableDisplay(bool cancel_buffer = true);
virtual status_t pauseDisplay(bool pause);
#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
//Used for shot to snapshot measurement
virtual status_t setSnapshotTimeRef(struct timeval *refTime = NULL);
#endif
virtual int useBuffers(void* bufArr, int num);
virtual bool supportsExternalBuffering();
//Implementation of inherited interfaces
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);
virtual int maxQueueableBuffers(unsigned int& queueable);
///Class specific functions
static void frameCallbackRelay(CameraFrame* caFrame);
void frameCallback(CameraFrame* caFrame);
void displayThread();
private:
void destroy();
bool processHalMsg();
status_t PostFrame(ANativeWindowDisplayAdapter::DisplayFrame &dispFrame);
bool handleFrameReturn();
status_t returnBuffersToWindow();
public:
static const int DISPLAY_TIMEOUT;
static const int FAILED_DQS_TO_SUSPEND;
class DisplayThread : public Thread
{
ANativeWindowDisplayAdapter* mDisplayAdapter;
TIUTILS::MessageQueue mDisplayThreadQ;
public:
DisplayThread(ANativeWindowDisplayAdapter* da)
: Thread(false), mDisplayAdapter(da) { }
///Returns a reference to the display message Q for display adapter to post messages
TIUTILS::MessageQueue& msgQ()
{
return mDisplayThreadQ;
}
virtual bool threadLoop()
{
mDisplayAdapter->displayThread();
return false;
}
enum DisplayThreadCommands
{
DISPLAY_START,
DISPLAY_STOP,
DISPLAY_FRAME,
DISPLAY_EXIT
};
};
//friend declarations
friend class DisplayThread;
private:
int postBuffer(void* displayBuf);
private:
bool mFirstInit;
bool mSuspend;
int mFailedDQs;
bool mPaused; //Pause state
preview_stream_ops_t* mANativeWindow;
sp<DisplayThread> mDisplayThread;
FrameProvider *mFrameProvider; ///Pointer to the frame provider interface
TIUTILS::MessageQueue mDisplayQ;
unsigned int mDisplayState;
///@todo Have a common class for these members
mutable Mutex mLock;
bool mDisplayEnabled;
int mBufferCount;
buffer_handle_t** mBufferHandleMap;
IMG_native_handle_t** mGrallocHandleMap;
uint32_t* mOffsetsMap;
int mFD;
KeyedVector<int, int> mFramesWithCameraAdapterMap;
sp<ErrorNotifier> mErrorNotifier;
uint32_t mFrameWidth;
uint32_t mFrameHeight;
uint32_t mPreviewWidth;
uint32_t mPreviewHeight;
uint32_t mXOff;
uint32_t mYOff;
const char *mPixelFormat;
#if PPM_INSTRUMENTATION || PPM_INSTRUMENTATION_ABS
//Used for calculating standby to first shot
struct timeval mStandbyToShot;
bool mMeasureStandby;
//Used for shot to snapshot/shot calculation
struct timeval mStartCapture;
bool mShotToShot;
#endif
};
};
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