142 lines
3.4 KiB
C++
142 lines
3.4 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2016 Roman Gilg <subdiff@gmail.com>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include <QVector>
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#include <QByteArray>
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// drm
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#include <xf86drmMode.h>
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namespace KWin
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{
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class DrmBackend;
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class DrmOutput;
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class DrmObject
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{
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public:
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/**
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* Create DRM object representation.
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* @param object_id provided by the kernel
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* @param fd of the DRM device
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*/
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DrmObject(uint32_t object_id, int fd);
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virtual ~DrmObject();
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/**
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* Must be called to query necessary data directly after creation.
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* @return true when initializing was successful
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*/
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virtual bool atomicInit() = 0;
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uint32_t id() const {
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return m_id;
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}
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DrmOutput *output() const {
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return m_output;
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}
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void setOutput(DrmOutput* output) {
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m_output = output;
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}
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int fd() const {
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return m_fd;
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}
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/**
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* Populate an atomic request with data of this object.
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* @param req the atomic request
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* @return true when the request was successfully populated
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*/
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virtual bool atomicPopulate(drmModeAtomicReq *req) const;
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void setValue(int prop, uint64_t new_value);
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bool propHasEnum(int prop, uint64_t value) const;
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protected:
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/**
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* Initialize properties of object. Only derived classes know names and quantities of
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* properties.
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*
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* @return true when properties have been initialized successfully
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*/
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virtual bool initProps() = 0;
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void setPropertyNames(QVector<QByteArray> &&vector);
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void initProp(int n, drmModeObjectProperties *properties,
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QVector<QByteArray> enumNames = QVector<QByteArray>(0));
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bool doAtomicPopulate(drmModeAtomicReq *req, int firstProperty) const;
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class Property;
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bool atomicAddProperty(drmModeAtomicReq *req, Property *property) const;
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int m_fd;
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const uint32_t m_id;
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DrmOutput *m_output = nullptr;
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// for comparison with received name of DRM object
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QVector<Property *> m_props;
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class Property
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{
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public:
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Property(drmModePropertyRes *prop, uint64_t val, QVector<QByteArray> enumNames);
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virtual ~Property();
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void initEnumMap(drmModePropertyRes *prop);
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/**
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* For properties of enum type the enum map identifies the kernel runtime values,
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* which must be queried beforehand.
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*
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* @param n the index to the enum
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* @return the runtime enum value corresponding with enum index @param n
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*/
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uint64_t enumMap(int n) const {
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return m_enumMap[n]; // TODO: test on index out of bounds?
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}
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bool hasEnum(uint64_t value) const {
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return m_enumMap.contains(value);
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}
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uint32_t propId() const {
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return m_propId;
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}
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uint64_t value() const {
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return m_value;
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}
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void setValue(uint64_t new_value) {
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m_value = new_value;
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}
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const QByteArray &name() const {
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return m_propName;
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}
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private:
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uint32_t m_propId = 0;
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QByteArray m_propName;
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uint64_t m_value = 0;
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QVector<uint64_t> m_enumMap;
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QVector<QByteArray> m_enumNames;
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};
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private:
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QVector<QByteArray> m_propsNames;
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};
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}
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QDebug& operator<<(QDebug& stream, const KWin::DrmObject*);
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