src/3rdparty/phonon/ds9/videorenderer_vmr9.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 18 Aug 2010 10:37:55 +0300
changeset 33 3e2da88830cd
parent 30 5dc02b23752f
permissions -rw-r--r--
Revision: 201031 Kit: 201033
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/*  This file is part of the KDE project.
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Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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This library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2.1 or 3 of the License.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this library.  If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "videorenderer_vmr9.h"
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#ifndef QT_NO_PHONON_VIDEO
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#include <QtGui/QWidget>
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#include <QtGui/QPainter>
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#include <d3d9.h>
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#include <vmr9.h>
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QT_BEGIN_NAMESPACE
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namespace Phonon
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{
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    namespace DS9
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    {
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        VideoRendererVMR9::~VideoRendererVMR9()
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        {
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        }
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        bool VideoRendererVMR9::isNative() const
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        {
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            return true;
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        }
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        VideoRendererVMR9::VideoRendererVMR9(QWidget *target) : m_target(target)
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        {
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            m_filter = Filter(CLSID_VideoMixingRenderer9, IID_IBaseFilter);
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            if (!m_filter) {
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                return;
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            }
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            ComPointer<IVMRFilterConfig9> config(m_filter, IID_IVMRFilterConfig9);
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            Q_ASSERT(config);
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            HRESULT hr = config->SetRenderingMode(VMR9Mode_Windowless);
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            Q_ASSERT(SUCCEEDED(hr));
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            hr = config->SetNumberOfStreams(1); //for now we limit it to 1 input stream
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            Q_ASSERT(SUCCEEDED(hr));
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            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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            windowlessControl->SetVideoClippingWindow(reinterpret_cast<HWND>(target->winId()));
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            windowlessControl->SetAspectRatioMode(VMR9ARMode_None); //we're in control of the size
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        }
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        QImage VideoRendererVMR9::snapshot() const
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        {
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            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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            if (windowlessControl) {
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                BYTE *buffer = 0;
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                HRESULT hr = windowlessControl->GetCurrentImage(&buffer);
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                if (SUCCEEDED(hr)) {
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                    const BITMAPINFOHEADER  *bmi = reinterpret_cast<BITMAPINFOHEADER*>(buffer);
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                    const int w = qAbs(bmi->biWidth),
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                        h = qAbs(bmi->biHeight);
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                    // Create image and copy data into image.
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                    QImage ret(w, h, QImage::Format_RGB32);
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                    if (!ret.isNull()) {
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                        uchar *data = buffer + bmi->biSize;
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                        const int bytes_per_line = w * sizeof(QRgb);
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                        for (int y = h - 1; y >= 0; --y) {
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                            qMemCopy(ret.scanLine(y), //destination
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                                data,     //source
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                                bytes_per_line);
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                            data += bytes_per_line;
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                        }
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                    }
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                    ::CoTaskMemFree(buffer);
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                    return ret;
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                }
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            }
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            return QImage();
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        }
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        QSize VideoRendererVMR9::videoSize() const
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        {
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            LONG w = 0,
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                h = 0;
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            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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            if (windowlessControl) {
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                windowlessControl->GetNativeVideoSize( &w, &h, 0, 0);
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            }
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            return QSize(w, h);
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        }
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        void VideoRendererVMR9::repaintCurrentFrame(QWidget *target, const QRect &rect)
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        {
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            HDC hDC = target->getDC();
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            // repaint the video
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            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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            HRESULT hr = windowlessControl ? windowlessControl->RepaintVideo(target->winId(), hDC) : E_POINTER;
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            if (FAILED(hr) || m_dstY > 0 || m_dstX > 0) {
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                const QColor c = target->palette().color(target->backgroundRole());
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                COLORREF color = RGB(c.red(), c.green(), c.blue());
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                HPEN hPen = ::CreatePen(PS_SOLID, 1, color);
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                HBRUSH hBrush = ::CreateSolidBrush(color);
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                ::SelectObject(hDC, hPen);
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                ::SelectObject(hDC, hBrush);
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                // repaint the video
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                if (FAILED(hr)) {
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                    //black background : we use the Win32 API to avoid the ghost effect of the backing store
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                    ::Rectangle(hDC, 0, 0, target->width(), target->height());
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                } else {
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                    if (m_dstY > 0) {
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                        ::Rectangle(hDC, 0, 0, target->width(), m_dstY); //top
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                        ::Rectangle(hDC, 0, target->height() - m_dstY, target->width(), target->height()); //bottom
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                    }
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                    if (m_dstX > 0) {
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                        ::Rectangle(hDC, 0, m_dstY, m_dstX, m_dstHeight + m_dstY); //left
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                        ::Rectangle(hDC, m_dstWidth + m_dstX, m_dstY, target->width(), m_dstHeight + m_dstY); //right
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                    }
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                }
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                ::DeleteObject(hPen);
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                ::DeleteObject(hBrush);
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            }
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            target->releaseDC(hDC);
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        }
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        void VideoRendererVMR9::notifyResize(const QSize &size, Phonon::VideoWidget::AspectRatio aspectRatio,
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            Phonon::VideoWidget::ScaleMode scaleMode)
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        {
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            if (!isActive()) {
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                RECT dummyRect = { 0, 0, 0, 0};
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                ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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                windowlessControl->SetVideoPosition(&dummyRect, &dummyRect);
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                return;
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            }
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            const QSize vsize = videoSize();
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            internalNotifyResize(size, vsize, aspectRatio, scaleMode);
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            RECT dstRectWin = { m_dstX, m_dstY, m_dstWidth + m_dstX, m_dstHeight + m_dstY};
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            RECT srcRectWin = { 0, 0, vsize.width(), vsize.height()};
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            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);
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            if (windowlessControl) {
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                windowlessControl->SetVideoPosition(&srcRectWin, &dstRectWin);
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            }
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        }
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        void VideoRendererVMR9::applyMixerSettings(qreal brightness, qreal contrast, qreal hue, qreal saturation)
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        {
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            InputPin sink = BackendNode::pins(m_filter, PINDIR_INPUT).first();
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            OutputPin source;
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            if (FAILED(sink->ConnectedTo(source.pparam()))) {
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                return; //it must be connected to work
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            }
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            //get the mixer (used for brightness/contrast/saturation/hue)
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            ComPointer<IVMRMixerControl9> mixer(m_filter, IID_IVMRMixerControl9);
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            Q_ASSERT(mixer);
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            VMR9ProcAmpControl ctrl;
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            ctrl.dwSize = sizeof(ctrl);
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            ctrl.dwFlags = ProcAmpControl9_Contrast | ProcAmpControl9_Brightness | ProcAmpControl9_Saturation | ProcAmpControl9_Hue;
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            VMR9ProcAmpControlRange range;
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            range.dwSize = sizeof(range);
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            range.dwProperty = ProcAmpControl9_Contrast;
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            HRESULT hr = mixer->GetProcAmpControlRange(0, &range);
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            if (FAILED(hr)) {
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                return;
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            }
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            ctrl.Contrast = ((contrast < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(contrast) + range.DefaultValue;
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            //brightness
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            range.dwProperty = ProcAmpControl9_Brightness;
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            hr = mixer->GetProcAmpControlRange(0, &range);
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            if (FAILED(hr)) {
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                return;
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            }
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            ctrl.Brightness = ((brightness < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(brightness) + range.DefaultValue;
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            //saturation
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            range.dwProperty = ProcAmpControl9_Saturation;
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            hr = mixer->GetProcAmpControlRange(0, &range);
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            if (FAILED(hr)) {
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                return;
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            }
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            ctrl.Saturation = ((saturation < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(saturation) + range.DefaultValue;
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            //hue
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            range.dwProperty = ProcAmpControl9_Hue;
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            hr = mixer->GetProcAmpControlRange(0, &range);
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            if (FAILED(hr)) {
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                return;
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            }
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            ctrl.Hue = ((hue < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(hue) + range.DefaultValue;
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            //finally set the settings
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            mixer->SetProcAmpControl(0, &ctrl);
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        }
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    }
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}
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QT_END_NAMESPACE
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#endif //QT_NO_PHONON_VIDEO