camerauis/cameraxui/cxengine/src/cxevideocapturecontroldesktop.cpp
author hgs
Fri, 23 Jul 2010 11:35:41 +0300
changeset 45 24fd82631616
child 55 0da2a5b56583
permissions -rw-r--r--
201029
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/*
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* Copyright (c) 2010 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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#include <QTime>
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#include <QPixmap>
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#include "cxevideocapturecontroldesktop.h"
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#include "cxeviewfindercontrol.h"
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#include "cxutils.h"
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#include "cxestate.h"
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#include "cxenamespace.h"
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#include "cxefilenamegeneratordesktop.h"
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#include "cxecameradevicedesktop.h"
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#include "cxeexception.h"
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namespace
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{
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    // Unit is milliseconds
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    static const int CXENGINE_ELAPSED_TIME_TIMEOUT = 1000; // 1 second
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    // Unit is seconds
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    static const int CXENGINE_MAXIMUM_VIDEO_TIME = 90*60; // 90 minutes
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}
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/*!
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* Constructor
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*/
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CxeVideoCaptureControlDesktop::CxeVideoCaptureControlDesktop(CxeCameraDeviceDesktop &cameraDevice,
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                                                             CxeViewfinderControl &viewfinderControl,
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                                                             CxeCameraDeviceControl &cameraDeviceControl,
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                                                             CxeFilenameGenerator &nameGenerator,
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                                                             CxeQualityPresets &qualityPresets) :
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    mCameraDevice(cameraDevice),
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    mCameraDeviceControl(cameraDeviceControl),
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    mViewfinderControl(viewfinderControl),
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    mFilenameGenerator(nameGenerator),
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    mQualityPresets(qualityPresets),
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    mSnapshot(),
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    mNewFileName(""),
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    mCurrentFilename(""),
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    mState(Idle),
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    mElapsedTime(0)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    qRegisterMetaType<CxeVideoCaptureControl::State> ();
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    initializeStates();
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    setupElapseTimer();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Destructor
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*/
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CxeVideoCaptureControlDesktop::~CxeVideoCaptureControlDesktop()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    releaseResources();
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Initializes resources for video recording.
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*/
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void CxeVideoCaptureControlDesktop::init()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() == Idle) {
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        // start initializing resources for video capture
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        initVideoRecorder();
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    } else if (state() == Initialized) {
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        // video recorder already initalized. Continue to prepare video reocording.
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        open();
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Releases all resources
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*/
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void CxeVideoCaptureControlDesktop::deinit()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() == Idle) {
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        // nothing to do
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        CX_DEBUG_EXIT_FUNCTION();
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        return;
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    }
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    // stop video-recording in-case if its ongoing.
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    stop();
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    setState(Idle);
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Intializes VideoRecorder for recording.
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*/
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void CxeVideoCaptureControlDesktop::initVideoRecorder()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() != Idle) {
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        // not valid state to start "open" operation
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        CX_DEBUG_EXIT_FUNCTION();
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        return;
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    }
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    // update current video quality details from icm
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    CxeError::Id err = CxeError::None;
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    setState(Initialized);
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    open();
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    if (err) {
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        // In case of error
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        emit videoPrepareComplete(err);
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        deinit();
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Setup the timer for elapsed time
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*/
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void CxeVideoCaptureControlDesktop::setupElapseTimer()
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{
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    mRecordElapseTimer.setSingleShot(false);
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    mRecordElapseTimer.setInterval(CXENGINE_ELAPSED_TIME_TIMEOUT);
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    connect(&mRecordElapseTimer, SIGNAL(timeout()), this, SLOT(handleElapseTimeout()));
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}
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/*!
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* Opens file for video recording.
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*/
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void CxeVideoCaptureControlDesktop::open()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() != Initialized) {
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        // not valid state to start "open" operation
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        CX_DEBUG_EXIT_FUNCTION();
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        return;
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    }
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    CxeError::Id err = CxeError::None;
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    // generate video file name, if necessary
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    if (mNewFileName.isEmpty()) {
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        QString fileExt = ".mp4";
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        // Generate new filename and open the file for writing video data
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        err = mFilenameGenerator.generateFilename(mNewFileName, fileExt);
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        if (err == CxeError::None) {
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            mCurrentFilename = mNewFileName;
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        } else {
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            // file name is not valid, re-initialize the value of current string
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            // back to empty string
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            mCurrentFilename = QString("");
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        }
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    }
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    if (err) {
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        // error occured.
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        deinit();
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        emit videoPrepareComplete(err);
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    } else {
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        setState(Preparing);
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        prepare();
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    }
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Prepare Video Recorder with necessary settings for video capture.
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*/
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void CxeVideoCaptureControlDesktop::prepare()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() != Preparing) {
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        // not valid state to continue prepare.
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        CX_DEBUG_EXIT_FUNCTION();
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        return;
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    }
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    int err = CxeError::None;
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    if (!err) {
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        // prepare snapshot
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        err = prepareVideoSnapshot();
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    }
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    if (!err) {
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        // prepare zoom only when there are no errors during prepare.
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        emit prepareZoomForVideo();
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    }
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    mViewfinderControl.start();
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    setState(Ready);
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    // emit video prepare status
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    emit videoPrepareComplete(CxeError::None);
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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 Prepare snapshot
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@Return symbian error code.
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 */
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int CxeVideoCaptureControlDesktop::prepareVideoSnapshot()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    int err = 0;
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    // Whether or not we have postcapture on, we need the snapshot for Thumbnail Manager.
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    mSnapshot = mCameraDevice.currentSnaphot();
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    handleSnapshotEvent(CxeError::None);
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    CX_DEBUG_EXIT_FUNCTION();
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    return err;
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}
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/*!
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* Camera events coming from ecam.
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*/
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void CxeVideoCaptureControlDesktop::handleCameraEvent(int eventUid, int error)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    Q_UNUSED(eventUid);
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    Q_UNUSED(error);
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Handle Snapshot event from ecam
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*/
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void CxeVideoCaptureControlDesktop::handleSnapshotEvent(CxeError::Id error)
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    if (state() == Idle) {
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        // we ignore this event, when we are not in active state(s)
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        CX_DEBUG(( "wrong state, ignoring snapshot" ));
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        CX_DEBUG_EXIT_FUNCTION();
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        return;
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    }
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    emit snapshotReady(error, QImage(), filename());
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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* Resets the video snapshot and current video filename
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*/
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void CxeVideoCaptureControlDesktop::reset()
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{
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    CX_DEBUG_ENTER_FUNCTION();
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    // Snapshot will consume considerably memory.
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    // Replace it with null pixmap to have it freed.
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    mSnapshot = QPixmap();
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    // reset the current file name.
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    mCurrentFilename = QString("");
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    CX_DEBUG_EXIT_FUNCTION();
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}
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/*!
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*@Return current video filename
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*/
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QString CxeVideoCaptureControlDesktop::filename() const
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{
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    // Simply return the current contents of mCurrentFilename.
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    // If video recording was started then it returns proper filename
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    // otherwise an empty string is returned.
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    return mCurrentFilename;
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}
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/*!
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* @Return current video snapshot
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*/
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QPixmap CxeVideoCaptureControlDesktop::snapshot() const
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{    
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    return mSnapshot;
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}
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/*!
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* @Return QList of all supported video quality details based on the camera index
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*  (primary/secondary).
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*/
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QList<CxeVideoDetails> CxeVideoCaptureControlDesktop::supportedVideoQualities()
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{
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    return QList<CxeVideoDetails>();
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}
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parents:
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   334
hgs
parents:
diff changeset
   335
/*!
hgs
parents:
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   336
* Starts video recording if we are in appropriate state.
hgs
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   337
*/
hgs
parents:
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   338
void CxeVideoCaptureControlDesktop::record()
hgs
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   339
{
hgs
parents:
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   340
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
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   341
hgs
parents:
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   342
    if (state() == Ready || state() == Paused) {
hgs
parents:
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   343
        //we skip the playing of the sound in the desktop state for now
hgs
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   344
        setState(Recording);        
hgs
parents:
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   345
        mRecordElapseTimer.start();
hgs
parents:
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   346
    }
hgs
parents:
diff changeset
   347
hgs
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   348
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   349
}
hgs
parents:
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   350
hgs
parents:
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   351
hgs
parents:
diff changeset
   352
/*!
hgs
parents:
diff changeset
   353
* Pauses video recording.
hgs
parents:
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   354
*/
hgs
parents:
diff changeset
   355
void CxeVideoCaptureControlDesktop::pause()
hgs
parents:
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   356
{
hgs
parents:
diff changeset
   357
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   358
hgs
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   359
    mRecordElapseTimer.stop();
hgs
parents:
diff changeset
   360
hgs
parents:
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   361
    setState(Paused);
hgs
parents:
diff changeset
   362
hgs
parents:
diff changeset
   363
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
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   364
}
hgs
parents:
diff changeset
   365
hgs
parents:
diff changeset
   366
hgs
parents:
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   367
/*!
hgs
parents:
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   368
* Stops video recording.
hgs
parents:
diff changeset
   369
*/
hgs
parents:
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   370
void CxeVideoCaptureControlDesktop::stop()
hgs
parents:
diff changeset
   371
{
hgs
parents:
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   372
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   373
hgs
parents:
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   374
    if (state() == Recording || state() == Paused) {
hgs
parents:
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   375
        mFilenameGenerator.raiseCounterValue();
hgs
parents:
diff changeset
   376
    }
hgs
parents:
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   377
hgs
parents:
diff changeset
   378
    mViewfinderControl.stop();
hgs
parents:
diff changeset
   379
    mRecordElapseTimer.stop();
hgs
parents:
diff changeset
   380
    mElapsedTime = 0;
hgs
parents:
diff changeset
   381
hgs
parents:
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   382
    setState(Stopping);
hgs
parents:
diff changeset
   383
    setState(Initialized);
hgs
parents:
diff changeset
   384
hgs
parents:
diff changeset
   385
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   386
}
hgs
parents:
diff changeset
   387
hgs
parents:
diff changeset
   388
hgs
parents:
diff changeset
   389
/*!
hgs
parents:
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   390
* camera reference changing, release resources
hgs
parents:
diff changeset
   391
*/
hgs
parents:
diff changeset
   392
void CxeVideoCaptureControlDesktop::prepareForCameraDelete()
hgs
parents:
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   393
{
hgs
parents:
diff changeset
   394
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   395
    releaseResources();
hgs
parents:
diff changeset
   396
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   397
}
hgs
parents:
diff changeset
   398
hgs
parents:
diff changeset
   399
/*!
hgs
parents:
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   400
* prepare for camera release.
hgs
parents:
diff changeset
   401
*/
hgs
parents:
diff changeset
   402
void CxeVideoCaptureControlDesktop::prepareForRelease()
hgs
parents:
diff changeset
   403
{
hgs
parents:
diff changeset
   404
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   405
    deinit();
hgs
parents:
diff changeset
   406
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   407
}
hgs
parents:
diff changeset
   408
hgs
parents:
diff changeset
   409
hgs
parents:
diff changeset
   410
/*!
hgs
parents:
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   411
* new camera available,
hgs
parents:
diff changeset
   412
*/
hgs
parents:
diff changeset
   413
void CxeVideoCaptureControlDesktop::handleCameraAllocated(CxeError::Id error)
hgs
parents:
diff changeset
   414
{
hgs
parents:
diff changeset
   415
    Q_UNUSED(error);
hgs
parents:
diff changeset
   416
    CX_DEBUG_IN_FUNCTION();
hgs
parents:
diff changeset
   417
}
hgs
parents:
diff changeset
   418
hgs
parents:
diff changeset
   419
hgs
parents:
diff changeset
   420
/*!
hgs
parents:
diff changeset
   421
* Initializes video recorder.
hgs
parents:
diff changeset
   422
*/
hgs
parents:
diff changeset
   423
void CxeVideoCaptureControlDesktop::createVideoRecorder()
hgs
parents:
diff changeset
   424
{
hgs
parents:
diff changeset
   425
    CX_DEBUG_IN_FUNCTION();
hgs
parents:
diff changeset
   426
}
hgs
parents:
diff changeset
   427
hgs
parents:
diff changeset
   428
hgs
parents:
diff changeset
   429
/*!
hgs
parents:
diff changeset
   430
* releases resources used by videocapture
hgs
parents:
diff changeset
   431
*/
hgs
parents:
diff changeset
   432
void CxeVideoCaptureControlDesktop::releaseResources()
hgs
parents:
diff changeset
   433
{
hgs
parents:
diff changeset
   434
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   435
hgs
parents:
diff changeset
   436
    // first de-init videocapture control
hgs
parents:
diff changeset
   437
    deinit();
hgs
parents:
diff changeset
   438
    reset();
hgs
parents:
diff changeset
   439
hgs
parents:
diff changeset
   440
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   441
}
hgs
parents:
diff changeset
   442
hgs
parents:
diff changeset
   443
hgs
parents:
diff changeset
   444
/*!
hgs
parents:
diff changeset
   445
@Returns current state of videocapture
hgs
parents:
diff changeset
   446
*/
hgs
parents:
diff changeset
   447
CxeVideoCaptureControl::State CxeVideoCaptureControlDesktop::state() const
hgs
parents:
diff changeset
   448
{
hgs
parents:
diff changeset
   449
    return mState;
hgs
parents:
diff changeset
   450
}
hgs
parents:
diff changeset
   451
hgs
parents:
diff changeset
   452
/*!
hgs
parents:
diff changeset
   453
* Initialize states for videocapturecontrol
hgs
parents:
diff changeset
   454
*/
hgs
parents:
diff changeset
   455
void CxeVideoCaptureControlDesktop::initializeStates()
hgs
parents:
diff changeset
   456
{
hgs
parents:
diff changeset
   457
    CX_DEBUG_IN_FUNCTION();
hgs
parents:
diff changeset
   458
}
hgs
parents:
diff changeset
   459
hgs
parents:
diff changeset
   460
/*!
hgs
parents:
diff changeset
   461
* calculates remaining video recording time.
hgs
parents:
diff changeset
   462
*/
hgs
parents:
diff changeset
   463
void CxeVideoCaptureControlDesktop::remainingTime(int &time)
hgs
parents:
diff changeset
   464
{
hgs
parents:
diff changeset
   465
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   466
hgs
parents:
diff changeset
   467
    time = CXENGINE_MAXIMUM_VIDEO_TIME - mElapsedTime;
hgs
parents:
diff changeset
   468
    if (time < 0) {
hgs
parents:
diff changeset
   469
        time = 0;
hgs
parents:
diff changeset
   470
    }
hgs
parents:
diff changeset
   471
hgs
parents:
diff changeset
   472
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   473
}
hgs
parents:
diff changeset
   474
hgs
parents:
diff changeset
   475
hgs
parents:
diff changeset
   476
/*!
hgs
parents:
diff changeset
   477
* Calculates elapsed recording time during video recording
hgs
parents:
diff changeset
   478
* @return Did fetching elapsed time succeed.
hgs
parents:
diff changeset
   479
*/
hgs
parents:
diff changeset
   480
bool CxeVideoCaptureControlDesktop::elapsedTime(int &time)
hgs
parents:
diff changeset
   481
{
hgs
parents:
diff changeset
   482
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   483
hgs
parents:
diff changeset
   484
    time = mElapsedTime;
hgs
parents:
diff changeset
   485
hgs
parents:
diff changeset
   486
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   487
hgs
parents:
diff changeset
   488
    return true;
hgs
parents:
diff changeset
   489
}
hgs
parents:
diff changeset
   490
hgs
parents:
diff changeset
   491
/*!
hgs
parents:
diff changeset
   492
* slot called when playing a sound has finished.
hgs
parents:
diff changeset
   493
*/
hgs
parents:
diff changeset
   494
void CxeVideoCaptureControlDesktop::handleSoundPlayed()
hgs
parents:
diff changeset
   495
{
hgs
parents:
diff changeset
   496
    // in case of video capture stop sound playing, nothing needs to be done
hgs
parents:
diff changeset
   497
    // meaning the state set elsewhere, and the video capture has been stopped already
hgs
parents:
diff changeset
   498
hgs
parents:
diff changeset
   499
    CX_DEBUG_IN_FUNCTION();
hgs
parents:
diff changeset
   500
}
hgs
parents:
diff changeset
   501
hgs
parents:
diff changeset
   502
hgs
parents:
diff changeset
   503
/*!
hgs
parents:
diff changeset
   504
* setting has changed, check if we are interested.
hgs
parents:
diff changeset
   505
*/
hgs
parents:
diff changeset
   506
void CxeVideoCaptureControlDesktop::handleSettingValueChanged(const QString& settingId,
hgs
parents:
diff changeset
   507
                                                              QVariant newValue)
hgs
parents:
diff changeset
   508
{
hgs
parents:
diff changeset
   509
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   510
hgs
parents:
diff changeset
   511
    Q_UNUSED(newValue);
hgs
parents:
diff changeset
   512
hgs
parents:
diff changeset
   513
    if (settingId == CxeSettingIds::VIDEO_QUALITY) {
hgs
parents:
diff changeset
   514
        // re-prepare for video
hgs
parents:
diff changeset
   515
       deinit();
hgs
parents:
diff changeset
   516
       init();
hgs
parents:
diff changeset
   517
    } else if (settingId == CxeSettingIds::VIDEO_MUTE_SETTING) {
hgs
parents:
diff changeset
   518
        // mute setting changed, apply the new setting and re-prepare.
hgs
parents:
diff changeset
   519
        prepare();
hgs
parents:
diff changeset
   520
    }
hgs
parents:
diff changeset
   521
hgs
parents:
diff changeset
   522
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   523
}
hgs
parents:
diff changeset
   524
hgs
parents:
diff changeset
   525
hgs
parents:
diff changeset
   526
hgs
parents:
diff changeset
   527
/*!
hgs
parents:
diff changeset
   528
* Video Scene mode changed, needs updated
hgs
parents:
diff changeset
   529
*/
hgs
parents:
diff changeset
   530
void CxeVideoCaptureControlDesktop::handleSceneChanged(CxeScene &scene)
hgs
parents:
diff changeset
   531
{
hgs
parents:
diff changeset
   532
    CX_DEBUG_ENTER_FUNCTION();
hgs
parents:
diff changeset
   533
    Q_UNUSED(scene);
hgs
parents:
diff changeset
   534
    CX_DEBUG_EXIT_FUNCTION();
hgs
parents:
diff changeset
   535
}
hgs
parents:
diff changeset
   536
hgs
parents:
diff changeset
   537
void CxeVideoCaptureControlDesktop::handleElapseTimeout()
hgs
parents:
diff changeset
   538
{
hgs
parents:
diff changeset
   539
    mElapsedTime++;
hgs
parents:
diff changeset
   540
hgs
parents:
diff changeset
   541
    CX_DEBUG( ("CxeVideoCaptureControlDesktop::handleElapseTimeout() <> mElapsedTime: %d", mElapsedTime ) );
hgs
parents:
diff changeset
   542
}
hgs
parents:
diff changeset
   543
hgs
parents:
diff changeset
   544
void CxeVideoCaptureControlDesktop::setState(CxeVideoCaptureControl::State stateId, CxeError::Id error)
hgs
parents:
diff changeset
   545
{
hgs
parents:
diff changeset
   546
    mState = stateId;
hgs
parents:
diff changeset
   547
    CX_DEBUG( ("CxeVideoCaptureControlDesktop::setState <> mState: %d", mState ) );
hgs
parents:
diff changeset
   548
    emit stateChanged(mState, error);
hgs
parents:
diff changeset
   549
}
hgs
parents:
diff changeset
   550
// End of file