diff options
Diffstat (limited to 'src/plugins/wmf/player/mfmetadatacontrol.cpp')
| -rw-r--r-- | src/plugins/wmf/player/mfmetadatacontrol.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/plugins/wmf/player/mfmetadatacontrol.cpp b/src/plugins/wmf/player/mfmetadatacontrol.cpp new file mode 100644 index 000000000..21cc7032b --- /dev/null +++ b/src/plugins/wmf/player/mfmetadatacontrol.cpp @@ -0,0 +1,246 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "mfmetadatacontrol.h" +#include "mfplayerservice.h" +#include "Propkey.h" + +//#define DEBUG_MEDIAFOUNDATION + +MFMetaDataControl::MFMetaDataControl(QObject *parent) + : QMetaDataReaderControl(parent) + , m_metaData(0) + , m_content(0) +{ +} + +MFMetaDataControl::~MFMetaDataControl() +{ + if (m_metaData) + m_metaData->Release(); + if (m_content) + m_content->Release(); +} + +bool MFMetaDataControl::isMetaDataAvailable() const +{ + return m_content || m_metaData; +} + +QVariant MFMetaDataControl::metaData(QtMultimediaKit::MetaData key) const +{ + QVariant value; + if (!isMetaDataAvailable()) + return value; + + int index = m_availableMetaDatas.indexOf(key); + if (index < 0) + return value; + + PROPVARIANT var; + PropVariantInit(&var); + HRESULT hr = S_FALSE; + if (m_content) + hr = m_content->GetValue(m_commonKeys[index], &var); + else if (m_metaData) + hr = m_metaData->GetProperty(m_commonNames[index].utf16(), &var); + + if (SUCCEEDED(hr)) + value = convertValue(var); + + PropVariantClear(&var); + return value; +} + +QVariant MFMetaDataControl::convertValue(const PROPVARIANT& var) const +{ + QVariant value; + //form MSDN: http://msdn.microsoft.com/en-us/library/ff384862%28v=VS.85%29.aspx + //it seems that those 4 types are enough for media foundation metadata + //add more later if necessary + switch (var.vt) { + case VT_LPWSTR: + value = QString::fromUtf16(var.pwszVal); + break; + case VT_UI4: + value = uint(var.ulVal); + break; + case VT_UI8: + value = qulonglong(var.uhVal.QuadPart); + break; + case VT_BOOL: + value = bool(var.boolVal); + break; + } + return value; +} + +QList<QtMultimediaKit::MetaData> MFMetaDataControl::availableMetaData() const +{ + return m_availableMetaDatas; +} + +QVariant MFMetaDataControl::extendedMetaData(const QString &key) const +{ + QVariant value; + HRESULT hr = S_FALSE; + PROPVARIANT var; + PropVariantInit(&var); + if (m_content) { + int index = m_extendedMetaDatas.indexOf(key); + if (index >= 0) { + hr = m_content->GetValue(m_extendedKeys[index], &var); + } + } else if (m_metaData) { + hr = m_metaData->GetProperty(key.utf16(), &var); + } + + if (SUCCEEDED(hr)) + value = convertValue(var); + + PropVariantClear(&var); + return value; +} + +QStringList MFMetaDataControl::availableExtendedMetaData() const +{ + return m_extendedMetaDatas; +} + +void MFMetaDataControl::updateSource(IMFPresentationDescriptor* sourcePD, IMFMediaSource* mediaSource) +{ + if (m_metaData) { + m_metaData->Release(); + m_metaData = 0; + } + + if (m_content) { + m_content->Release(); + m_content = 0; + } + + m_availableMetaDatas.clear(); + m_commonKeys.clear(); + m_commonNames.clear(); + m_extendedMetaDatas.clear(); + m_extendedKeys.clear(); + + if (SUCCEEDED(MFGetService(mediaSource, MF_PROPERTY_HANDLER_SERVICE, IID_PPV_ARGS(&m_content)))) { + DWORD cProps; + if (SUCCEEDED(m_content->GetCount(&cProps))) { + for (DWORD i = 0; i < cProps; i++) + { + PROPERTYKEY key; + if (FAILED(m_content->GetAt(i, &key))) + continue; + bool common = true; + if (key == PKEY_Author) { + m_availableMetaDatas.push_back(QtMultimediaKit::Author); + } else if (key == PKEY_Title) { + m_availableMetaDatas.push_back(QtMultimediaKit::Title); + } else if (key == PKEY_ParentalRating) { + m_availableMetaDatas.push_back(QtMultimediaKit::ParentalRating); + } else if (key == PKEY_Comment) { + m_availableMetaDatas.push_back(QtMultimediaKit::Description); + } else if (key == PKEY_Copyright) { + m_availableMetaDatas.push_back(QtMultimediaKit::Copyright); + //TODO: add more common keys + } else { + common = false; + //TODO: add more extended keys + } + if (common) + m_commonKeys.push_back(key); + } + } else { + m_content->Release(); + m_content = NULL; + } + } + + if (!m_content) { + //fallback to Vista approach + IMFMetadataProvider *provider = NULL; + if (SUCCEEDED(MFGetService(mediaSource, MF_METADATA_PROVIDER_SERVICE, IID_PPV_ARGS(&provider)))) { + if (SUCCEEDED(provider->GetMFMetadata(sourcePD, 0, 0, &m_metaData))) { + PROPVARIANT varNames; + PropVariantInit(&varNames); + if (SUCCEEDED(m_metaData->GetAllPropertyNames(&varNames)) && varNames.vt == (VT_VECTOR | VT_LPWSTR)) { + ULONG cElements = varNames.calpwstr.cElems; + for (ULONG i = 0; i < cElements; i++) + { + const WCHAR* sName = varNames.calpwstr.pElems[i]; +#ifdef DEBUG_MEDIAFOUNDATION + qDebug() << "metadata: " << QString::fromUtf16(sName); +#endif + bool common = true; + if (wcscmp(sName, L"Author") == 0) { + m_availableMetaDatas.push_back(QtMultimediaKit::Author); + } else if (wcscmp(sName, L"Title") == 0) { + m_availableMetaDatas.push_back(QtMultimediaKit::Title); + } else if (wcscmp(sName, L"Rating") == 0) { + m_availableMetaDatas.push_back(QtMultimediaKit::ParentalRating); + } else if (wcscmp(sName, L"Description") == 0) { + m_availableMetaDatas.push_back(QtMultimediaKit::Description); + } else if (wcscmp(sName, L"Copyright") == 0) { + m_availableMetaDatas.push_back(QtMultimediaKit::Copyright); + //TODO: add more common keys + } else { + common = false; + m_extendedMetaDatas.push_back(QString::fromUtf16(sName)); + } + if (common) + m_commonNames.push_back(QString::fromUtf16(sName)); + } + } + PropVariantClear(&varNames); + } else { + qWarning("Failed to get IMFMetadata"); + } + provider->Release(); + } else { + qWarning("Failed to get IMFMetadataProvider from source"); + } + } + + emit metaDataChanged(); + emit metaDataAvailableChanged(m_metaData || m_content); +} |