70 lines
2 KiB
C++
70 lines
2 KiB
C++
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/********************************************************************
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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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Copyright 2017 Roman Gilg <subdiff@gmail.com>
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Copyright 2015 Martin Gräßlin <mgraesslin@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "drm_backend.h"
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#include "drm_buffer_gbm.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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#include <errno.h>
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// drm
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#include <xf86drm.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(DrmBackend *backend, gbm_surface *surface)
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: DrmBuffer(backend)
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, m_surface(surface)
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{
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m_bo = gbm_surface_lock_front_buffer(surface);
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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(m_backend->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(m_backend->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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if (m_bo) {
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gbm_surface_release_buffer(m_surface, m_bo);
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m_bo = nullptr;
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}
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}
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}
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