58 lines
1.3 KiB
C++
58 lines
1.3 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: 2017 Roman Gilg <subdiff@gmail.com>
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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "drm_buffer_gbm.h"
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#include "gbm_surface.h"
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#include "logging.h"
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// system
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#include <sys/mman.h>
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// c++
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#include <cerrno>
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// drm
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <gbm.h>
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namespace KWin
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{
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// DrmSurfaceBuffer
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DrmSurfaceBuffer::DrmSurfaceBuffer(int fd, const std::shared_ptr<GbmSurface> &surface)
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: DrmBuffer(fd)
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, m_surface(surface)
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{
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m_bo = m_surface->lockFrontBuffer();
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if (!m_bo) {
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qCWarning(KWIN_DRM) << "Locking front buffer failed";
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return;
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}
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m_size = QSize(gbm_bo_get_width(m_bo), gbm_bo_get_height(m_bo));
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if (drmModeAddFB(fd, m_size.width(), m_size.height(), 24, 32, gbm_bo_get_stride(m_bo), gbm_bo_get_handle(m_bo).u32, &m_bufferId) != 0) {
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qCWarning(KWIN_DRM) << "drmModeAddFB failed";
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}
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gbm_bo_set_user_data(m_bo, this, nullptr);
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}
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DrmSurfaceBuffer::~DrmSurfaceBuffer()
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{
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if (m_bufferId) {
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drmModeRmFB(fd(), m_bufferId);
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}
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releaseGbm();
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}
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void DrmSurfaceBuffer::releaseGbm()
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{
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m_surface->releaseBuffer(m_bo);
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m_bo = nullptr;
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}
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}
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