| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qeglfshooks_p.h" |
| 5 | #include <QLoggingCategory> |
| 6 | |
| 7 | QT_BEGIN_NAMESPACE |
| 8 | |
| 9 | #ifdef EGLFS_PLATFORM_HOOKS |
| 10 | |
| 11 | QEglFSDeviceIntegration *qt_egl_device_integration() |
| 12 | { |
| 13 | extern QEglFSHooks *platformHooks; |
| 14 | return platformHooks; |
| 15 | } |
| 16 | |
| 17 | #else |
| 18 | |
| 19 | namespace { |
| 20 | class DeviceIntegration |
| 21 | { |
| 22 | public: |
| 23 | DeviceIntegration(); |
| 24 | ~DeviceIntegration() { delete m_integration; } |
| 25 | QEglFSDeviceIntegration *integration() { return m_integration; } |
| 26 | private: |
| 27 | QEglFSDeviceIntegration *m_integration; |
| 28 | }; |
| 29 | } |
| 30 | |
| 31 | Q_GLOBAL_STATIC(DeviceIntegration, deviceIntegration) |
| 32 | |
| 33 | DeviceIntegration::DeviceIntegration() |
| 34 | : m_integration(nullptr) |
| 35 | { |
| 36 | QStringList pluginKeys = QEglFSDeviceIntegrationFactory::keys(); |
| 37 | if (!pluginKeys.isEmpty()) { |
| 38 | // Some built-in logic: Prioritize either X11 or KMS/DRM. |
| 39 | if (qEnvironmentVariableIsSet(varName: "DISPLAY")) { |
| 40 | const QString x11key = QStringLiteral("eglfs_x11"); |
| 41 | if (pluginKeys.contains(str: x11key)) { |
| 42 | pluginKeys.removeOne(t: x11key); |
| 43 | pluginKeys.prepend(t: x11key); |
| 44 | } |
| 45 | } else { |
| 46 | const QString kmskey = QStringLiteral("eglfs_kms"); |
| 47 | if (pluginKeys.contains(str: kmskey)) { |
| 48 | pluginKeys.removeOne(t: kmskey); |
| 49 | pluginKeys.prepend(t: kmskey); |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | // The environment variable can override everything. |
| 54 | QString requested = qEnvironmentVariable(varName: "QT_QPA_EGLFS_INTEGRATION"); |
| 55 | if (requested.isNull()) { |
| 56 | // Device-specific makespecs may define a preferred plugin. |
| 57 | #ifdef EGLFS_PREFERRED_PLUGIN |
| 58 | #define DEFAULT_PLUGIN EGLFS_PREFERRED_PLUGIN |
| 59 | #define STR(s) #s |
| 60 | #define STRQ(s) STR(s) |
| 61 | requested = QStringLiteral(STRQ(DEFAULT_PLUGIN)); |
| 62 | #endif |
| 63 | } |
| 64 | |
| 65 | // Treat "none" as special. There has to be a way to indicate |
| 66 | // that plugins must be ignored when the device is known to be |
| 67 | // functional with the default, non-specialized integration. |
| 68 | if (requested != QStringLiteral("none")) { |
| 69 | if (!requested.isEmpty()) { |
| 70 | pluginKeys.removeOne(t: requested); |
| 71 | pluginKeys.prepend(t: requested); |
| 72 | } |
| 73 | qCDebug(qLcEglDevDebug) << "EGL device integration plugin keys (sorted):"<< pluginKeys; |
| 74 | while (!m_integration && !pluginKeys.isEmpty()) { |
| 75 | QString key = pluginKeys.takeFirst(); |
| 76 | qCDebug(qLcEglDevDebug) << "Trying to load device EGL integration"<< key; |
| 77 | m_integration = QEglFSDeviceIntegrationFactory::create(name: key); |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | if (!m_integration) { |
| 83 | // Use a default, non-specialized device integration when no plugin is available. |
| 84 | // For some systems this is sufficient. |
| 85 | qCDebug(qLcEglDevDebug) << "Using base device integration"; |
| 86 | m_integration = new QEglFSDeviceIntegration; |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | QEglFSDeviceIntegration *qt_egl_device_integration() |
| 91 | { |
| 92 | return deviceIntegration()->integration(); |
| 93 | } |
| 94 | |
| 95 | #endif // EGLFS_PLATFORM_HOOKS |
| 96 | |
| 97 | QT_END_NAMESPACE |
| 98 |