0d2879c62d
Currently, the BufferInterface encapsulates all the kinds of client buffers. This has become a somewhat annoying issue as we want to reference the shm pool if a shm buffer is destroyed, or have custom buffer readiness logic for linux dma-buf client buffers. Implementing all of that with the current abstractions will be challenging as there's no good separation between different client buffer types. This change splits the BufferInterface class in three sub-classes - DrmClientBuffer, LinuxDmaBufV1ClientBuffer, and ShmClientBuffer. In addition to that, this change fixes the broken buffer ref'ing api.
117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
/*
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SPDX-FileCopyrightText: 2018 Fredrik Höglund <fredrik@kde.org>
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SPDX-FileCopyrightText: 2019 Roman Gilg <subdiff@gmail.com>
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SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#pragma once
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#include "clientbuffer.h"
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#include "clientbufferintegration.h"
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#include <QHash>
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#include <QSet>
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namespace KWaylandServer
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{
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class LinuxDmaBufV1ClientBufferPrivate;
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class LinuxDmaBufV1ClientBufferIntegrationPrivate;
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/**
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* The LinuxDmaBufV1Plane type represents a plane in a client buffer.
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*/
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struct LinuxDmaBufV1Plane
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{
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int fd = -1; ///< The dmabuf file descriptor
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quint32 offset = 0; ///< The offset from the start of buffer
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quint32 stride = 0; ///< The distance from the start of a row to the next row in bytes
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quint64 modifier = 0; ///< The layout modifier
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};
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/**
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* The LinuxDmaBufV1ClientBuffer class represents a linux dma-buf client buffer.
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*
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* The LinuxDmaBufV1ClientBuffer can be used even after the underlying wl_buffer object
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* is destroyed by the client.
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*/
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class KWAYLANDSERVER_EXPORT LinuxDmaBufV1ClientBuffer : public ClientBuffer
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{
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Q_OBJECT
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Q_DECLARE_PRIVATE(LinuxDmaBufV1ClientBuffer)
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public:
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LinuxDmaBufV1ClientBuffer(const QSize &size,
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quint32 format,
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quint32 flags,
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const QVector<LinuxDmaBufV1Plane> &planes);
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~LinuxDmaBufV1ClientBuffer() override;
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quint32 format() const;
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quint32 flags() const;
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QVector<LinuxDmaBufV1Plane> planes() const;
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QSize size() const override;
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bool hasAlphaChannel() const override;
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Origin origin() const override;
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private:
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void initialize(wl_resource *resource);
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friend class LinuxDmaBufParamsV1;
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};
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/**
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* The LinuxDmaBufV1ClientBufferIntegration class provides support for linux dma-buf buffers.
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*/
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class KWAYLANDSERVER_EXPORT LinuxDmaBufV1ClientBufferIntegration : public ClientBufferIntegration
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{
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Q_OBJECT
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public:
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explicit LinuxDmaBufV1ClientBufferIntegration(Display *display);
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~LinuxDmaBufV1ClientBufferIntegration() override;
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/**
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* The Iface class provides an interface from the LinuxDmabufInterface into the compositor
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*/
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class RendererInterface {
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public:
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virtual ~RendererInterface() = default;
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/**
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* Imports a linux-dmabuf buffer into the compositor.
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*
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* The parent LinuxDmabufUnstableV1Interface class takes ownership of returned
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* buffer objects.
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*
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* In return the returned buffer takes ownership of the file descriptor for each
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* plane.
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*
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* Note that it is the responsibility of the caller to close the file descriptors
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* when the import fails.
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*
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* @return The imported buffer on success, and nullptr otherwise.
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*/
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virtual LinuxDmaBufV1ClientBuffer *importBuffer(const QVector<LinuxDmaBufV1Plane> &planes,
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quint32 format,
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const QSize &size,
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quint32 flags) = 0;
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};
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RendererInterface *rendererInterface() const;
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/**
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* Sets the compositor implementation for the dmabuf interface.
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*
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* The ownership is not transferred by this call.
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*/
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void setRendererInterface(RendererInterface *rendererInterface);
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void setSupportedFormatsWithModifiers(const QHash<uint32_t, QSet<uint64_t>> &set);
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private:
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QScopedPointer<LinuxDmaBufV1ClientBufferIntegrationPrivate> d;
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};
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} // namespace KWaylandServer
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