directshowmetadatacontrol.cpp 10.47 KiB
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#include <dshow.h>
#include <initguid.h>
#include <qnetwork.h>
#include "directshowmetadatacontrol.h"
#include "directshowplayerservice.h"
#include <QtMultimedia/qmediametadata.h>
#include <QtCore/qcoreapplication.h>
#ifndef QT_NO_WMSDK
namespace
    struct QWMMetaDataKeyLookup
        QString key;
        const wchar_t *token;
static const QWMMetaDataKeyLookup qt_wmMetaDataKeys[] =
    { QMediaMetaData::Title, L"Title" },
    { QMediaMetaData::SubTitle, L"WM/SubTitle" },
    { QMediaMetaData::Author, L"Author" },
    { QMediaMetaData::Comment, L"Comment" },
    { QMediaMetaData::Description, L"Description" },
    { QMediaMetaData::Category, L"WM/Category" },
    { QMediaMetaData::Genre, L"WM/Genre" },
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//{ QMediaMetaData::Date, 0 }, { QMediaMetaData::Year, L"WM/Year" }, { QMediaMetaData::UserRating, L"UserRating" }, //{ QMediaMetaData::MetaDatawords, 0 }, { QMediaMetaData::Language, L"Language" }, { QMediaMetaData::Publisher, L"WM/Publisher" }, { QMediaMetaData::Copyright, L"Copyright" }, { QMediaMetaData::ParentalRating, L"ParentalRating" }, //{ QMediaMetaData::RatingOrganisation, L"RatingOrganisation" }, // Media { QMediaMetaData::Size, L"FileSize" }, { QMediaMetaData::MediaType, L"MediaType" }, { QMediaMetaData::Duration, L"Duration" }, // Audio { QMediaMetaData::AudioBitRate, L"AudioBitRate" }, { QMediaMetaData::AudioCodec, L"AudioCodec" }, { QMediaMetaData::ChannelCount, L"ChannelCount" }, { QMediaMetaData::SampleRate, L"Frequency" }, // Music { QMediaMetaData::AlbumTitle, L"WM/AlbumTitle" }, { QMediaMetaData::AlbumArtist, L"WM/AlbumArtist" }, { QMediaMetaData::ContributingArtist, L"Author" }, { QMediaMetaData::Composer, L"WM/Composer" }, { QMediaMetaData::Conductor, L"WM/Conductor" }, { QMediaMetaData::Lyrics, L"WM/Lyrics" }, { QMediaMetaData::Mood, L"WM/Mood" }, { QMediaMetaData::TrackNumber, L"WM/TrackNumber" }, //{ QMediaMetaData::TrackCount, 0 }, //{ QMediaMetaData::CoverArtUriSmall, 0 }, //{ QMediaMetaData::CoverArtUriLarge, 0 }, // Image/Video //{ QMediaMetaData::Resolution, 0 }, //{ QMediaMetaData::PixelAspectRatio, 0 }, // Video //{ QMediaMetaData::FrameRate, 0 }, { QMediaMetaData::VideoBitRate, L"VideoBitRate" }, { QMediaMetaData::VideoCodec, L"VideoCodec" }, //{ QMediaMetaData::PosterUri, 0 }, // Movie { QMediaMetaData::ChapterNumber, L"ChapterNumber" }, { QMediaMetaData::Director, L"WM/Director" }, { QMediaMetaData::LeadPerformer, L"LeadPerformer" }, { QMediaMetaData::Writer, L"WM/Writer" }, // Photos { QMediaMetaData::CameraManufacturer, L"CameraManufacturer" }, { QMediaMetaData::CameraModel, L"CameraModel" }, { QMediaMetaData::Event, L"Event" }, { QMediaMetaData::Subject, L"Subject" } }; static QVariant getValue(IWMHeaderInfo *header, const wchar_t *key) { WORD streamNumber = 0; WMT_ATTR_DATATYPE type = WMT_TYPE_DWORD; WORD size = 0; if (header->GetAttributeByName(&streamNumber, key, &type, 0, &size) == S_OK) { switch (type) { case WMT_TYPE_DWORD: if (size == sizeof(DWORD)) { DWORD word; if (header->GetAttributeByName(
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&streamNumber, key, &type, reinterpret_cast<BYTE *>(&word), &size) == S_OK) { return int(word); } } break; case WMT_TYPE_STRING: { QString string; string.resize(size / 2 - 1); if (header->GetAttributeByName( &streamNumber, key, &type, reinterpret_cast<BYTE *>(const_cast<ushort *>(string.utf16())), &size) == S_OK) { return string; } } break; case WMT_TYPE_BINARY: { QByteArray bytes; bytes.resize(size); if (header->GetAttributeByName( &streamNumber, key, &type, reinterpret_cast<BYTE *>(bytes.data()), &size) == S_OK) { return bytes; } } break; case WMT_TYPE_BOOL: if (size == sizeof(DWORD)) { DWORD word; if (header->GetAttributeByName( &streamNumber, key, &type, reinterpret_cast<BYTE *>(&word), &size) == S_OK) { return bool(word); } } break; case WMT_TYPE_QWORD: if (size == sizeof(QWORD)) { QWORD word; if (header->GetAttributeByName( &streamNumber, key, &type, reinterpret_cast<BYTE *>(&word), &size) == S_OK) { return qint64(word); } } break; case WMT_TYPE_WORD: if (size == sizeof(WORD)){ WORD word; if (header->GetAttributeByName( &streamNumber, key,
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&type, reinterpret_cast<BYTE *>(&word), &size) == S_OK) { return short(word); } } break; case WMT_TYPE_GUID: if (size == 16) { } break; default: break; } } return QVariant(); } #endif DirectShowMetaDataControl::DirectShowMetaDataControl(QObject *parent) : QMetaDataReaderControl(parent) , m_content(0) #ifndef QT_NO_WMSDK , m_headerInfo(0) #endif { } DirectShowMetaDataControl::~DirectShowMetaDataControl() { } bool DirectShowMetaDataControl::isMetaDataAvailable() const { #ifndef QT_NO_WMSDK return m_content || m_headerInfo; #else return m_content; #endif } QVariant DirectShowMetaDataControl::metaData(const QString &key) const { QVariant value; #ifndef QT_NO_WMSDK if (m_headerInfo) { static const int count = sizeof(qt_wmMetaDataKeys) / sizeof(QWMMetaDataKeyLookup); for (int i = 0; i < count; ++i) { if (qt_wmMetaDataKeys[i].key == key) { value = getValue(m_headerInfo, qt_wmMetaDataKeys[i].token); break; } } } else if (m_content) { #else if (m_content) { #endif BSTR string = 0; if (key == QMediaMetaData::Author) m_content->get_AuthorName(&string); else if (key == QMediaMetaData::Title) m_content->get_Title(&string); else if (key == QMediaMetaData::ParentalRating) m_content->get_Rating(&string); else if (key == QMediaMetaData::Description) m_content->get_Description(&string); else if (key == QMediaMetaData::Copyright) m_content->get_Copyright(&string);
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if (string) { value = QString::fromUtf16(reinterpret_cast<ushort *>(string), ::SysStringLen(string)); ::SysFreeString(string); } } return value; } QStringList DirectShowMetaDataControl::availableMetaData() const { return QStringList(); } void DirectShowMetaDataControl::updateGraph(IFilterGraph2 *graph, IBaseFilter *source) { if (m_content) m_content->Release(); if (!graph || graph->QueryInterface( IID_IAMMediaContent, reinterpret_cast<void **>(&m_content)) != S_OK) { m_content = 0; } #ifdef QT_NO_WMSDK Q_UNUSED(source); #else if (m_headerInfo) m_headerInfo->Release(); m_headerInfo = com_cast<IWMHeaderInfo>(source, IID_IWMHeaderInfo); #endif // DirectShowMediaPlayerService holds a lock at this point so defer emitting signals to a later // time. QCoreApplication::postEvent(this, new QEvent(QEvent::Type(MetaDataChanged))); } void DirectShowMetaDataControl::customEvent(QEvent *event) { if (event->type() == QEvent::Type(MetaDataChanged)) { event->accept(); emit metaDataChanged(); #ifndef QT_NO_WMSDK emit metaDataAvailableChanged(m_content || m_headerInfo); #else emit metaDataAvailableChanged(m_content); #endif } else { QMetaDataReaderControl::customEvent(event); } }