/*  This file is part of the KDE project.

Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

This library is free software: you can redistribute it and/or modify

it under the terms of the GNU Lesser General Public License as published by

the Free Software Foundation, either version 2.1 or 3 of the License.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License

along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "videorenderer_vmr9.h"

#ifndef QT_NO_PHONON_VIDEO

#include <QtGui/QWidget>

#include <QtGui/QPainter>

#include <d3d9.h>

#include <vmr9.h>

QT_BEGIN_NAMESPACE

namespace Phonon

{

    namespace DS9

    {

        VideoRendererVMR9::~VideoRendererVMR9()

        {

        }

        bool VideoRendererVMR9::isNative() const

        {

            return true;

        }

        VideoRendererVMR9::VideoRendererVMR9(QWidget *target) : m_target(target)

        {

            m_filter = Filter(CLSID_VideoMixingRenderer9, IID_IBaseFilter);

            if (!m_filter) {

                return;

            }

            ComPointer<IVMRFilterConfig9> config(m_filter, IID_IVMRFilterConfig9);

            Q_ASSERT(config);

            HRESULT hr = config->SetRenderingMode(VMR9Mode_Windowless);

            Q_ASSERT(SUCCEEDED(hr));

            hr = config->SetNumberOfStreams(1); //for now we limit it to 1 input stream

            Q_ASSERT(SUCCEEDED(hr));

            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

            windowlessControl->SetVideoClippingWindow(reinterpret_cast<HWND>(target->winId()));

            windowlessControl->SetAspectRatioMode(VMR9ARMode_None); //we're in control of the size

        }

        QImage VideoRendererVMR9::snapshot() const

        {

            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

            if (windowlessControl) {

                BYTE *buffer = 0;

                HRESULT hr = windowlessControl->GetCurrentImage(&buffer);

                if (SUCCEEDED(hr)) {

                    const BITMAPINFOHEADER  *bmi = reinterpret_cast<BITMAPINFOHEADER*>(buffer);

                    const int w = qAbs(bmi->biWidth),

                        h = qAbs(bmi->biHeight);

                    // Create image and copy data into image.

                    QImage ret(w, h, QImage::Format_RGB32);

                    if (!ret.isNull()) {

                        uchar *data = buffer + bmi->biSize;

                        const int bytes_per_line = w * sizeof(QRgb);

                        for (int y = h - 1; y >= 0; --y) {

                            qMemCopy(ret.scanLine(y), //destination

                                data,     //source

                                bytes_per_line);

                            data += bytes_per_line;

                        }

                    }

                    ::CoTaskMemFree(buffer);

                    return ret;

                }

            }

            return QImage();

        }

        QSize VideoRendererVMR9::videoSize() const

        {

            LONG w = 0,

                h = 0;

            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

            if (windowlessControl) {

                windowlessControl->GetNativeVideoSize( &w, &h, 0, 0);

            }

            return QSize(w, h);

        }

        void VideoRendererVMR9::repaintCurrentFrame(QWidget *target, const QRect &rect)

        {

            HDC hDC = target->getDC();

            // repaint the video

            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

            HRESULT hr = windowlessControl ? windowlessControl->RepaintVideo(target->winId(), hDC) : E_POINTER;

            if (FAILED(hr) || m_dstY > 0 || m_dstX > 0) {

                const QColor c = target->palette().color(target->backgroundRole());

                COLORREF color = RGB(c.red(), c.green(), c.blue());

                HPEN hPen = ::CreatePen(PS_SOLID, 1, color);

                HBRUSH hBrush = ::CreateSolidBrush(color);

                ::SelectObject(hDC, hPen);

                ::SelectObject(hDC, hBrush);

                // repaint the video

                if (FAILED(hr)) {

                    //black background : we use the Win32 API to avoid the ghost effect of the backing store

                    ::Rectangle(hDC, 0, 0, target->width(), target->height());

                } else {

                    if (m_dstY > 0) {

                        ::Rectangle(hDC, 0, 0, target->width(), m_dstY); //top

                        ::Rectangle(hDC, 0, target->height() - m_dstY, target->width(), target->height()); //bottom

                    }

                    if (m_dstX > 0) {

                        ::Rectangle(hDC, 0, m_dstY, m_dstX, m_dstHeight + m_dstY); //left

                        ::Rectangle(hDC, m_dstWidth + m_dstX, m_dstY, target->width(), m_dstHeight + m_dstY); //right

                    }

                }

                ::DeleteObject(hPen);

                ::DeleteObject(hBrush);

            }

            target->releaseDC(hDC);

        }

        void VideoRendererVMR9::notifyResize(const QSize &size, Phonon::VideoWidget::AspectRatio aspectRatio,

            Phonon::VideoWidget::ScaleMode scaleMode)

        {

            if (!isActive()) {

                RECT dummyRect = { 0, 0, 0, 0};

                ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

                windowlessControl->SetVideoPosition(&dummyRect, &dummyRect);

                return;

            }

            const QSize vsize = videoSize();

            internalNotifyResize(size, vsize, aspectRatio, scaleMode);

            RECT dstRectWin = { m_dstX, m_dstY, m_dstWidth + m_dstX, m_dstHeight + m_dstY};

            RECT srcRectWin = { 0, 0, vsize.width(), vsize.height()};

            ComPointer<IVMRWindowlessControl9> windowlessControl(m_filter, IID_IVMRWindowlessControl9);

            if (windowlessControl) {

                windowlessControl->SetVideoPosition(&srcRectWin, &dstRectWin);

            }

        }

        void VideoRendererVMR9::applyMixerSettings(qreal brightness, qreal contrast, qreal hue, qreal saturation)

        {

            InputPin sink = BackendNode::pins(m_filter, PINDIR_INPUT).first();

            OutputPin source;

            if (FAILED(sink->ConnectedTo(source.pparam()))) {

                return; //it must be connected to work

            }

            //get the mixer (used for brightness/contrast/saturation/hue)

            ComPointer<IVMRMixerControl9> mixer(m_filter, IID_IVMRMixerControl9);

            Q_ASSERT(mixer);

            VMR9ProcAmpControl ctrl;

            ctrl.dwSize = sizeof(ctrl);

            ctrl.dwFlags = ProcAmpControl9_Contrast | ProcAmpControl9_Brightness | ProcAmpControl9_Saturation | ProcAmpControl9_Hue;

            VMR9ProcAmpControlRange range;

            range.dwSize = sizeof(range);

            range.dwProperty = ProcAmpControl9_Contrast;

            HRESULT hr = mixer->GetProcAmpControlRange(0, &range);

            if (FAILED(hr)) {

                return;

            }

            ctrl.Contrast = ((contrast < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(contrast) + range.DefaultValue;

            //brightness

            range.dwProperty = ProcAmpControl9_Brightness;

            hr = mixer->GetProcAmpControlRange(0, &range);

            if (FAILED(hr)) {

                return;

            }

            ctrl.Brightness = ((brightness < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(brightness) + range.DefaultValue;

            //saturation

            range.dwProperty = ProcAmpControl9_Saturation;

            hr = mixer->GetProcAmpControlRange(0, &range);

            if (FAILED(hr)) {

                return;

            }

            ctrl.Saturation = ((saturation < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(saturation) + range.DefaultValue;

            //hue

            range.dwProperty = ProcAmpControl9_Hue;

            hr = mixer->GetProcAmpControlRange(0, &range);

            if (FAILED(hr)) {

                return;

            }

            ctrl.Hue = ((hue < 0 ? range.MinValue : range.MaxValue) - range.DefaultValue) * qAbs(hue) + range.DefaultValue;

            //finally set the settings

            mixer->SetProcAmpControl(0, &ctrl);

        }

    }

}

QT_END_NAMESPACE

#endif //QT_NO_PHONON_VIDEO