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39 | |
40 | #include "private/qimagereaderwriterhelpers_p.h" |
41 | |
42 | #include <qjsonarray.h> |
43 | #include <qmutex.h> |
44 | #include <private/qfactoryloader_p.h> |
45 | |
46 | QT_BEGIN_NAMESPACE |
47 | |
48 | namespace QImageReaderWriterHelpers { |
49 | |
50 | #ifndef QT_NO_IMAGEFORMATPLUGIN |
51 | |
52 | Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, |
53 | (QImageIOHandlerFactoryInterface_iid, QLatin1String("/imageformats" ))) |
54 | Q_GLOBAL_STATIC(QMutex, loaderMutex) |
55 | |
56 | static void appendImagePluginFormats(QFactoryLoader *loader, |
57 | QImageIOPlugin::Capability cap, |
58 | QList<QByteArray> *result) |
59 | { |
60 | typedef QMultiMap<int, QString> PluginKeyMap; |
61 | typedef PluginKeyMap::const_iterator PluginKeyMapConstIterator; |
62 | |
63 | const PluginKeyMap keyMap = loader->keyMap(); |
64 | const PluginKeyMapConstIterator cend = keyMap.constEnd(); |
65 | int i = -1; |
66 | QImageIOPlugin *plugin = nullptr; |
67 | result->reserve(alloc: result->size() + keyMap.size()); |
68 | for (PluginKeyMapConstIterator it = keyMap.constBegin(); it != cend; ++it) { |
69 | if (it.key() != i) { |
70 | i = it.key(); |
71 | plugin = qobject_cast<QImageIOPlugin *>(object: loader->instance(index: i)); |
72 | } |
73 | const QByteArray key = it.value().toLatin1(); |
74 | if (plugin && (plugin->capabilities(device: nullptr, format: key) & cap) != 0) |
75 | result->append(t: key); |
76 | } |
77 | } |
78 | |
79 | static void appendImagePluginMimeTypes(QFactoryLoader *loader, |
80 | QImageIOPlugin::Capability cap, |
81 | QList<QByteArray> *result, |
82 | QList<QByteArray> *resultKeys = nullptr) |
83 | { |
84 | QList<QJsonObject> metaDataList = loader->metaData(); |
85 | |
86 | const int pluginCount = metaDataList.size(); |
87 | for (int i = 0; i < pluginCount; ++i) { |
88 | const QJsonObject metaData = metaDataList.at(i).value(key: QLatin1String("MetaData" )).toObject(); |
89 | const QJsonArray keys = metaData.value(key: QLatin1String("Keys" )).toArray(); |
90 | const QJsonArray mimeTypes = metaData.value(key: QLatin1String("MimeTypes" )).toArray(); |
91 | QImageIOPlugin *plugin = qobject_cast<QImageIOPlugin *>(object: loader->instance(index: i)); |
92 | const int keyCount = keys.size(); |
93 | for (int k = 0; k < keyCount; ++k) { |
94 | const QByteArray key = keys.at(i: k).toString().toLatin1(); |
95 | if (plugin && (plugin->capabilities(device: nullptr, format: key) & cap) != 0) { |
96 | result->append(t: mimeTypes.at(i: k).toString().toLatin1()); |
97 | if (resultKeys) |
98 | resultKeys->append(t: key); |
99 | } |
100 | } |
101 | } |
102 | } |
103 | |
104 | QSharedPointer<QFactoryLoader> pluginLoader() |
105 | { |
106 | loaderMutex()->lock(); |
107 | return QSharedPointer<QFactoryLoader>(loader(), [](QFactoryLoader *) { |
108 | loaderMutex()->unlock(); |
109 | }); |
110 | } |
111 | |
112 | static inline QImageIOPlugin::Capability pluginCapability(Capability cap) |
113 | { |
114 | return cap == CanRead ? QImageIOPlugin::CanRead : QImageIOPlugin::CanWrite; |
115 | } |
116 | |
117 | #endif // QT_NO_IMAGEFORMATPLUGIN |
118 | |
119 | QList<QByteArray> supportedImageFormats(Capability cap) |
120 | { |
121 | QList<QByteArray> formats; |
122 | formats.reserve(alloc: _qt_NumFormats); |
123 | for (int i = 0; i < _qt_NumFormats; ++i) |
124 | formats << _qt_BuiltInFormats[i].extension; |
125 | |
126 | #ifndef QT_NO_IMAGEFORMATPLUGIN |
127 | appendImagePluginFormats(loader: loader(), cap: pluginCapability(cap), result: &formats); |
128 | #endif // QT_NO_IMAGEFORMATPLUGIN |
129 | |
130 | std::sort(first: formats.begin(), last: formats.end()); |
131 | formats.erase(afirst: std::unique(first: formats.begin(), last: formats.end()), alast: formats.end()); |
132 | return formats; |
133 | } |
134 | |
135 | QList<QByteArray> supportedMimeTypes(Capability cap) |
136 | { |
137 | QList<QByteArray> mimeTypes; |
138 | mimeTypes.reserve(alloc: _qt_NumFormats); |
139 | for (const auto &fmt : _qt_BuiltInFormats) |
140 | mimeTypes.append(QByteArrayLiteral("image/" ) + fmt.mimeType); |
141 | |
142 | #ifndef QT_NO_IMAGEFORMATPLUGIN |
143 | appendImagePluginMimeTypes(loader: loader(), cap: pluginCapability(cap), result: &mimeTypes); |
144 | #endif // QT_NO_IMAGEFORMATPLUGIN |
145 | |
146 | std::sort(first: mimeTypes.begin(), last: mimeTypes.end()); |
147 | mimeTypes.erase(afirst: std::unique(first: mimeTypes.begin(), last: mimeTypes.end()), alast: mimeTypes.end()); |
148 | return mimeTypes; |
149 | } |
150 | |
151 | QList<QByteArray> imageFormatsForMimeType(const QByteArray &mimeType, Capability cap) |
152 | { |
153 | QList<QByteArray> formats; |
154 | if (mimeType.startsWith(c: "image/" )) { |
155 | const QByteArray type = mimeType.mid(index: sizeof("image/" ) - 1); |
156 | for (const auto &fmt : _qt_BuiltInFormats) { |
157 | if (fmt.mimeType == type && !formats.contains(t: fmt.extension)) |
158 | formats << fmt.extension; |
159 | } |
160 | } |
161 | |
162 | #ifndef QT_NO_IMAGEFORMATPLUGIN |
163 | QList<QByteArray> mimeTypes; |
164 | QList<QByteArray> keys; |
165 | appendImagePluginMimeTypes(loader: loader(), cap: pluginCapability(cap), result: &mimeTypes, resultKeys: &keys); |
166 | for (int i = 0; i < mimeTypes.size(); ++i) { |
167 | if (mimeTypes.at(i) == mimeType) { |
168 | const auto &key = keys.at(i); |
169 | if (!formats.contains(t: key)) |
170 | formats << key; |
171 | } |
172 | } |
173 | #endif // QT_NO_IMAGEFORMATPLUGIN |
174 | |
175 | return formats; |
176 | } |
177 | |
178 | } // QImageReaderWriterHelpers |
179 | |
180 | QT_END_NAMESPACE |
181 | |