74feb5d34e
Change-Id: Icbdd1bdae223192465b8c84faeb99b01be154275 Reviewed-on: http://codereview.qt.nokia.com/2605 Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com> Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
247 lines
8.2 KiB
C++
247 lines
8.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "mfmetadatacontrol.h"
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#include "mfplayerservice.h"
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#include "Propkey.h"
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//#define DEBUG_MEDIAFOUNDATION
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MFMetaDataControl::MFMetaDataControl(QObject *parent)
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: QMetaDataReaderControl(parent)
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, m_metaData(0)
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, m_content(0)
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{
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}
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MFMetaDataControl::~MFMetaDataControl()
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{
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if (m_metaData)
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m_metaData->Release();
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if (m_content)
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m_content->Release();
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}
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bool MFMetaDataControl::isMetaDataAvailable() const
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{
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return m_content || m_metaData;
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}
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QVariant MFMetaDataControl::metaData(QtMultimediaKit::MetaData key) const
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{
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QVariant value;
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if (!isMetaDataAvailable())
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return value;
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int index = m_availableMetaDatas.indexOf(key);
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if (index < 0)
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return value;
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PROPVARIANT var;
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PropVariantInit(&var);
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HRESULT hr = S_FALSE;
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if (m_content)
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hr = m_content->GetValue(m_commonKeys[index], &var);
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else if (m_metaData)
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hr = m_metaData->GetProperty(m_commonNames[index].utf16(), &var);
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if (SUCCEEDED(hr))
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value = convertValue(var);
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PropVariantClear(&var);
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return value;
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}
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QVariant MFMetaDataControl::convertValue(const PROPVARIANT& var) const
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{
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QVariant value;
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//form MSDN: http://msdn.microsoft.com/en-us/library/ff384862%28v=VS.85%29.aspx
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//it seems that those 4 types are enough for media foundation metadata
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//add more later if necessary
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switch (var.vt) {
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case VT_LPWSTR:
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value = QString::fromUtf16(var.pwszVal);
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break;
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case VT_UI4:
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value = uint(var.ulVal);
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break;
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case VT_UI8:
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value = qulonglong(var.uhVal.QuadPart);
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break;
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case VT_BOOL:
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value = bool(var.boolVal);
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break;
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}
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return value;
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}
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QList<QtMultimediaKit::MetaData> MFMetaDataControl::availableMetaData() const
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{
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return m_availableMetaDatas;
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}
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QVariant MFMetaDataControl::extendedMetaData(const QString &key) const
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{
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QVariant value;
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HRESULT hr = S_FALSE;
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PROPVARIANT var;
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PropVariantInit(&var);
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if (m_content) {
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int index = m_extendedMetaDatas.indexOf(key);
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if (index >= 0) {
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hr = m_content->GetValue(m_extendedKeys[index], &var);
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}
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} else if (m_metaData) {
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hr = m_metaData->GetProperty(key.utf16(), &var);
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}
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if (SUCCEEDED(hr))
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value = convertValue(var);
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PropVariantClear(&var);
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return value;
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}
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QStringList MFMetaDataControl::availableExtendedMetaData() const
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{
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return m_extendedMetaDatas;
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}
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void MFMetaDataControl::updateSource(IMFPresentationDescriptor* sourcePD, IMFMediaSource* mediaSource)
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{
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if (m_metaData) {
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m_metaData->Release();
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m_metaData = 0;
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}
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if (m_content) {
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m_content->Release();
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m_content = 0;
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}
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m_availableMetaDatas.clear();
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m_commonKeys.clear();
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m_commonNames.clear();
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m_extendedMetaDatas.clear();
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m_extendedKeys.clear();
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if (SUCCEEDED(MFGetService(mediaSource, MF_PROPERTY_HANDLER_SERVICE, IID_PPV_ARGS(&m_content)))) {
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DWORD cProps;
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if (SUCCEEDED(m_content->GetCount(&cProps))) {
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for (DWORD i = 0; i < cProps; i++)
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{
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PROPERTYKEY key;
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if (FAILED(m_content->GetAt(i, &key)))
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continue;
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bool common = true;
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if (key == PKEY_Author) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Author);
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} else if (key == PKEY_Title) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Title);
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} else if (key == PKEY_ParentalRating) {
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m_availableMetaDatas.push_back(QtMultimediaKit::ParentalRating);
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} else if (key == PKEY_Comment) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Description);
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} else if (key == PKEY_Copyright) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Copyright);
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//TODO: add more common keys
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} else {
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common = false;
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//TODO: add more extended keys
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}
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if (common)
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m_commonKeys.push_back(key);
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}
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} else {
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m_content->Release();
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m_content = NULL;
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}
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}
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if (!m_content) {
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//fallback to Vista approach
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IMFMetadataProvider *provider = NULL;
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if (SUCCEEDED(MFGetService(mediaSource, MF_METADATA_PROVIDER_SERVICE, IID_PPV_ARGS(&provider)))) {
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if (SUCCEEDED(provider->GetMFMetadata(sourcePD, 0, 0, &m_metaData))) {
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PROPVARIANT varNames;
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PropVariantInit(&varNames);
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if (SUCCEEDED(m_metaData->GetAllPropertyNames(&varNames)) && varNames.vt == (VT_VECTOR | VT_LPWSTR)) {
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ULONG cElements = varNames.calpwstr.cElems;
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for (ULONG i = 0; i < cElements; i++)
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{
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const WCHAR* sName = varNames.calpwstr.pElems[i];
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#ifdef DEBUG_MEDIAFOUNDATION
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qDebug() << "metadata: " << QString::fromUtf16(sName);
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#endif
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bool common = true;
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if (wcscmp(sName, L"Author") == 0) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Author);
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} else if (wcscmp(sName, L"Title") == 0) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Title);
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} else if (wcscmp(sName, L"Rating") == 0) {
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m_availableMetaDatas.push_back(QtMultimediaKit::ParentalRating);
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} else if (wcscmp(sName, L"Description") == 0) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Description);
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} else if (wcscmp(sName, L"Copyright") == 0) {
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m_availableMetaDatas.push_back(QtMultimediaKit::Copyright);
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//TODO: add more common keys
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} else {
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common = false;
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m_extendedMetaDatas.push_back(QString::fromUtf16(sName));
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}
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if (common)
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m_commonNames.push_back(QString::fromUtf16(sName));
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}
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}
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PropVariantClear(&varNames);
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} else {
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qWarning("Failed to get IMFMetadata");
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}
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provider->Release();
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} else {
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qWarning("Failed to get IMFMetadataProvider from source");
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}
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}
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emit metaDataChanged();
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emit metaDataAvailableChanged(m_metaData || m_content);
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}
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