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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>
namespace Ti {
namespace Camera {
/**
* Display handler class - This class basically handles the buffer posting to display
*/
class ANativeWindowDisplayAdapter : public DisplayAdapter
{
public:
typedef struct
{
CameraBuffer *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);
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 bool supportsExternalBuffering();
//Implementation of inherited interfaces
virtual CameraBuffer * allocateBufferList(int width, int height, const char* format, int &bytes, int numBufs);
virtual CameraBuffer *getBufferList(int *numBufs);
virtual uint32_t * getOffsets() ;
virtual int getFd() ;
virtual int freeBufferList(CameraBuffer * buflist);
virtual status_t maxQueueableBuffers(unsigned int& queueable);
virtual status_t minUndequeueableBuffers(int& unqueueable);
// If set to true ANativeWindowDisplayAdapter will not lock/unlock graphic buffers
void setExternalLocking(bool extBuffLocking);
///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 android::Thread
{
ANativeWindowDisplayAdapter* mDisplayAdapter;
Utils::MessageQueue mDisplayThreadQ;
public:
DisplayThread(ANativeWindowDisplayAdapter* da)
: Thread(false), mDisplayAdapter(da) { }
///Returns a reference to the display message Q for display adapter to post messages
Utils::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;
android::sp<DisplayThread> mDisplayThread;
FrameProvider *mFrameProvider; ///Pointer to the frame provider interface
Utils::MessageQueue mDisplayQ;
unsigned int mDisplayState;
///@todo Have a common class for these members
mutable android::Mutex mLock;
bool mDisplayEnabled;
int mBufferCount;
CameraBuffer *mBuffers;
//buffer_handle_t** mBufferHandleMap; // -> frames[i].BufferHandle
//IMG_native_handle_t** mGrallocHandleMap; // -> frames[i].GrallocHandle
uint32_t* mOffsetsMap; // -> frames[i].Offset
int mFD;
android::KeyedVector<buffer_handle_t *, int> mFramesWithCameraAdapterMap;
android::KeyedVector<int, int> mFramesType;
android::sp<ErrorNotifier> mErrorNotifier;
uint32_t mFrameWidth;
uint32_t mFrameHeight;
uint32_t mPreviewWidth;
uint32_t mPreviewHeight;
uint32_t mXOff;
uint32_t mYOff;
const char *mPixelFormat;
//In case if we ,as example, using out buffers in Ducati Decoder
//DOMX will handle lock/unlock of graphic buffers
bool mUseExternalBufferLocking;
#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
};
} // namespace Camera
} // namespace Ti
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