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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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@file
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@publishedPartner
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@prototype
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*/
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#ifndef MCAMERAHISTOGRAM_H
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#define MCAMERAHISTOGRAM_H
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#include <ecam/camerahistogram.h>
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#include <ecam/ecamcommonuidif.hrh>
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/**
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This is the UID which is used to obtain the MCameraHistogram interface,
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via a call to CCamera::CustomInterface(), which provides implementation of the M-class interface.
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@see KECamMCameraHistogramUidValue
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@deprecated use KECamMCameraV2HistogramUid
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*/
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static const TUid KECamMCameraHistogramUid = {KECamMCameraHistogramUidValue};
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/**
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This is the UID which is used to obtain the MCameraV2Histogram interface,
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via a call to CCamera::CustomInterface(), which provides implementation of the M-class interface.
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@see KECamMCameraV2HistogramUidValue
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*/
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static const TUid KECamMCameraV2HistogramUid = {KECamMCameraV2HistogramUidValue};
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/**
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This is a mixin class to be implemented by providers of the extension API for the camera histogram.
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Histograms can be sent to the client or directly displayed on the viewfinder.
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@note This class is intended for sub classing by licensees only.
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@see CCamera::CCameraHistogram
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@publishedPartner
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@deprecated use MCameraV2Histogram
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*/
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class MCameraHistogram
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{
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public:
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/**
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@deprecated use void MCameraV2Histogram::GetSupportedHistogramsL(TUint& aSupportedHistogramType)
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Gets a list of the types of histograms the ECam implementation supports.
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@return A bit field representing all supported types of histograms.
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@see CCamera::CCameraHistogram::THistogramType
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*/
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virtual TUint32 SupportedHistograms()=0;
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/**
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@deprecated use void MCameraV2Histogram::PrepareClientHistogramL
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Request to prepare a non direct histogram.
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@note A direct histogram is directly embedded into the viewfinder.
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If a non direct histogram is requested the histogram data will be passed to the camera client.
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@param aType
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The type of histogram to be prepared. This must be one of the supported histogram types returned by
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SupportedHistograms().
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@leave KErrNotSupported if the histogram type supplied in aType is not supported.
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@return An integer value which is the handle of the histogram on the ECam implementation.
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This value must be passed to other API functions when requesting operations
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involving this particular histogram.
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@see PrepareDSAHistogramL
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*/
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virtual TUint PrepareHistogramL(CCamera::CCameraHistogram::THistogramType aType)=0;
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/**
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@deprecated use void MCameraV2Histogram::PrepareDirectHistogramL
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Request to prepare a direct histogram.
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@note A direct histogram is directly embedded into the viewfinder.
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@param aType
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The type of histogram to be prepared. This must be one of the supported histogram types returned by
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SupportedHistograms().
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@param aPosition
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The position on the screen (in pixels) where the histogram is to be displayed.
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@param aSize
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The size of histogram in pixels.
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@param aColor
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The colour and alpha blending with which the histogram will be displayed.
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@leave KErrNotSupported if the histogram type supplied in aType is not supported.
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@return An integer value which is the handle of the histogram on the ECam implementation.
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This value must be passed to other API functions when requesting operations
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involving this particular histogram.
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@see PrepareHistogramL
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*/
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virtual TUint PrepareDSAHistogramL(CCamera::CCameraHistogram::THistogramType aType, const TPoint& aPosition, const TSize& aSize, const TRgb& aColor)=0;
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/**
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@deprecated use void MCameraV2Histogram::StartHistogram()
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Request to start getting histogram notifications.
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@param aHistHandle
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The handle identifying the histogram on the ECam implementation.
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@leave KErrArgument if aHistHandle is out of range; also any system wide error.
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*/
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virtual void StartHistogramL(TUint aHistHandle)=0;
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/**
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@deprecated use void MCameraV2Histogram::StopHistogram()
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Request to stop getting histogram notifications.
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@param aHistHandle
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The handle identifying the histogram on the ECam implementation.
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@leave KErrArgument if aHistHandle is out of range; also any system wide error.
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*/
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virtual void StopHistogramL(TUint aHistHandle)=0;
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/**
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@deprecated only one histogram is available per buffer with the usage of MHistogramV2Buffer and MCameraV2Histogram.
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Destroys a histogram on the ECam implementation and releases its handle.
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@param aHistHandle
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The handle identifying the histogram on the ECam implementation.
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@leave KErrArgument if aHistHandle is out of range; also any system wide error.
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*/
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virtual void DestroyHistogramL(TUint aHistHandle)=0;
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/**
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@deprecated use void MCameraV2Histogram::Release(CCamera::CCameraV2Histogram *aHistogramHandle)
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Releases all the histogram handles created by this object and destroys them on the ECam implementation.
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This function is called from the destructor of CCamera::CCameraHistogram.
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*/
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virtual void Release()=0;
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/**
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@deprecated use void MCameraV2Histogram::GetHistogramStateL(TBool& aIsHistogramActive)
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Gets a list of all histograms that are active on the ECam implementation.
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A histogram is in an active state if StartHistogramL() has been called on it.
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@param aActiveHistograms
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Returned list of histogram handles for which StartHistogramL() has been called.
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@leave KErrNoMemory if the ECam implementation cannot add more histogram handles due to low memory; also any system wide error.
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*/
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virtual void GetActiveHistogramsL(RArray<TUint>& aActiveHistograms)=0;
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/**
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@deprecated use void MCameraV2Histogram::UpdateDirectHistogramPropertiesL
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Updates the properties of a direct histogram.
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@param aHistHandle
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The handle identifying the histogram on the ECam implementation.
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@param aPosition
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The new position on the screen (in pixels) where the histogram is to be displayed.
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@param aSize
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The new size of histogram in pixels.
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@param aColor
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The new colour and alpha blending with which the histogram will be displayed.
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@leave KErrArgument if aHistHandle is out of range; also any system wide error.
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*/
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virtual void UpdateDSAHistogramPropertiesL(TUint aHistHandle, const TPoint& aPosition, const TSize& aSize, const TRgb& aColor)=0;
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/**
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@deprecated use void MCameraV2Histogram::GetDirectHistogramPropertiesL
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Gets the properties of a direct histogram.
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@param aHistHandle
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The handle on the ECam implementation of the direct histogram whose properties are to be retrieved.
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@param aPosition
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A reference to a TPoint object that will receive the position (in pixels) of the histogram on the screen.
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@param aSize
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A reference to a TSize object that will receive the size of the histogram in pixels.
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@param aColor
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A reference to a TRgb object that will receive the colour and alpha blending of the histogram.
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@leave KErrArgument if aHistHandle is out of range; also any system wide error.
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*/
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virtual void GetDSAHistogramPropertiesL(TUint aHistHandle, TPoint& aPosition, TSize& aSize, TRgb& aColor)=0;
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/**
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@deprecated use MCaptureImageObserver, MCaptureVideoObserver, MDirectViewFinderObserver, and MClientViewFinderObserver
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which have callback functions which notify the client about availability of histogram data. These are sent when
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CCameraV2Histogram::StartHistogram() is called after CCameraV2Histogram::PrepareClientHistogramL(). If
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CCameraV2Histogram::PrepareClientHistogramL() is not called first then the callback returns KErrBadHandle.
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Returns to the client the histogram data for all the histograms generated by the ECam implementation.
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@leave KErrNoMemory if the ECam implementation has not been able to create the histogram buffer;
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also any system wide error.
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@return A reference to a histogram buffer which will contain the returned histogram data.
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*/
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virtual MHistogramBuffer& HistogramDataL()=0;
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/**
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@deprecated use MCaptureImageObserver, MCaptureVideoObserver, MDirectViewFinderObserver, and MClientViewFinderObserver
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which have callback functions which notify the client about availability of histogram data. These are sent when
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CCameraV2Histogram::StartHistogram() is called after CCameraV2Histogram::PrepareClientHistogramL(). If
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CCameraV2Histogram::PrepareClientHistogramL() is not called first then the callback returns KErrBadHandle.
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Returns the data for a single histogram from the ECam implementation to the client.
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@param aHistHandle
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The handle on the ECam implementation of the histogram whose data is to be retrieved.
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@leave KErrNoMemory if the ECam implementation has not been able to create the histogram buffer;
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also any system wide error.
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@return A reference to a histogram buffer which will contain the returned histogram data.
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*/
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virtual MHistogramBuffer& HistogramDataL(TUint aHistHandle)=0;
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};
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/**
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This is a mixin class to be implemented by providers of the extension API for the camera v2 histogram.
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Histograms can be sent to the client or directly displayed on the screen.
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@note This class is intended for sub classing by licensees only.
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@see CCamera::CCameraV2Histogram
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@publishedPartner
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@prototype
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*/
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class MCameraV2Histogram
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{
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public:
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/**
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Releases the interface.
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@param aHistogramHandle
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The pointer to the histogram class object which would be destroyed by the client.
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*/
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virtual void Release(CCamera::CCameraV2Histogram* aHistogramHandle)=0;
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/**
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The pointer to the V2 Histogram class used to pass back to the client via observer callbacks when direct histogram
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gets displayed. Implementation is not supposed to not destroy this object.
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@param aHistogramHandle
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The pointer to the histogram class object.
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@see MCaptureImageObserver
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@see MDirectViewFinderObserver
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@see MClientViewFinderObserver
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*/
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virtual void SetHistogramHandle(CCamera::CCameraV2Histogram* aHistogramHandle)=0;
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/**
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Retrieves a list of the supported types of histograms.
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@param aSupportedHistogramType
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A reference to bit field representing the supported types of histograms as given by CCamera::
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CCameraV2Histogram::THistogramType
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@leave May leave with any error code.
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@see CCamera::CCameraV2Histogram::THistogramType
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*/
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virtual void GetSupportedHistogramsL(TUint& aSupportedHistogramType) const =0;
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/**
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Informs whether or not the direct histogram is supported.
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@param aIsDirectHistogramSupported
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ETrue implies that direct histogram is supported.
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EFalse implies that direct histogram is not supported.
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@leave May leave with any error code.
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*/
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virtual void GetDirectHistogramSupportInfoL(TBool& aIsDirectHistogramSupported) const=0;
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/**
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Request to prepare a client based histogram.
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@note A direct histogram is directly embedded into the viewfinder.
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If a non direct histogram is requested the histogram data will be passed to the camera client.
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@param aType
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The type of histogram to be prepared. This must be one of the supported histogram types given by
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GetSupportedHistogramsL.
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@leave May leave with any error code.
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@note Each histogram object will either prepare direct histogram or client histogram. Preparing multiple histograms
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per object is an invalid case.
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@see PrepareDSAHistogramL
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*/
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virtual void PrepareClientHistogramL(CCamera::CCameraV2Histogram::THistogramType aType)=0;
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/**
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Prepares the direct histogram.
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@param aDirectHistogramParameters
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The parameters required to prepare the direct histogram.
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@leave May leave with any error code.
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@note Each histogram object will either prepare direct histogram or client histogram. Preparing multiple histograms
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per object is an invalid case.
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@see PrepareClientHistogramL
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*/
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virtual void PrepareDirectHistogramL(const CCamera::CCameraV2Histogram::TDirectHistogramParameters& aDirectHistogramParameters)=0;
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/**
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Update the parameters for the direct histogram.
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@param aDirectHistogramParameters
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The desired parameters which have to be used to update the direct histogram.
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@leave May leave with any error code.
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*/
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virtual void UpdateDirectHistogramPropertiesL(const CCamera::CCameraV2Histogram::TDirectHistogramParameters& aDirectHistogramParameters)=0;
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/**
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Retrieves the currently used parameters for the direct histogram.
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@param aDirectHistogramParameters
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Retrieves the parameters currently being used for the direct histogram.
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@leave May leave with any error code.
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|
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*/
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|
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virtual void GetDirectHistogramPropertiesL(CCamera::CCameraV2Histogram::TDirectHistogramParameters& aDirectHistogramParameters) const=0;
|
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|
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|
364 |
/**
|
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|
365 |
Request to start getting histogram notifications.
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|
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|
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@note Histogram should have been prepared before calling this method.
|
|
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|
368 |
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|
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@note Histogram notifications are sent to the client by using relevant callbacks for image capture, video capture
|
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and viewfinders.
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|
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|
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|
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@see MCaptureImageObserver
|
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|
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@see MCaptureVideoObserver
|
|
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|
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@see MDirectViewFinderObserver
|
|
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|
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@see MClientViewFinderObserver
|
|
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|
376 |
*/
|
|
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|
377 |
virtual void StartHistogram()=0;
|
|
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|
378 |
|
|
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|
379 |
/**
|
|
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|
380 |
Request to stop generating histogram.
|
|
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|
381 |
*/
|
|
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|
382 |
virtual void StopHistogram()=0;
|
|
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|
383 |
|
|
sl@0
|
384 |
/**
|
|
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|
385 |
Informs whether the histogram is currently active or not.
|
|
sl@0
|
386 |
A histogram is in an active state if StartHistogram() has been called on it and has not been yet stopped.
|
|
sl@0
|
387 |
|
|
sl@0
|
388 |
@param aIsHistogramActive
|
|
sl@0
|
389 |
ETrue indicates that the histogram is active.
|
|
sl@0
|
390 |
EFalse indicates that the histogram is inactive.
|
|
sl@0
|
391 |
|
|
sl@0
|
392 |
@leave May leave with any error code.
|
|
sl@0
|
393 |
*/
|
|
sl@0
|
394 |
virtual void GetHistogramStateL(TBool& aIsHistogramActive) const=0;
|
|
sl@0
|
395 |
};
|
|
sl@0
|
396 |
|
|
sl@0
|
397 |
#endif // MCAMERAHISTOGRAM_H
|