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/*
* Copyright (C) 2022 Metrological Group B.V.
* Copyright (C) 2022 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GBMDevice.h"
#if USE(LIBGBM)
#include <fcntl.h>
#include <gbm.h>
#include <mutex>
#include <unistd.h>
#include <wtf/StdLibExtras.h>
#include <xf86drm.h>
namespace WebCore {
const GBMDevice& GBMDevice::singleton()
{
static std::unique_ptr<GBMDevice> s_device;
static std::once_flag s_onceFlag;
std::call_once(s_onceFlag,
[] {
s_device = makeUnique<GBMDevice>();
});
return *s_device;
}
GBMDevice::GBMDevice()
{
[&] {
drmDevicePtr devices[64];
memset(devices, 0, sizeof(devices));
int numDevices = drmGetDevices2(0, devices, WTF_ARRAY_LENGTH(devices));
if (numDevices <= 0)
return;
for (int i = 0; i < numDevices; ++i) {
drmDevice* device = devices[i];
if (!(device->available_nodes & (1 << DRM_NODE_RENDER)))
continue;
m_fd = open(device->nodes[DRM_NODE_RENDER], O_RDWR | O_CLOEXEC);
if (m_fd >= 0)
break;
}
drmFreeDevices(devices, numDevices);
}();
if (m_fd >= 0)
m_device = gbm_create_device(m_fd);
}
GBMDevice::~GBMDevice()
{
if (m_device)
gbm_device_destroy(m_device);
if (m_fd >= 0)
close(m_fd);
}
} // namespace WebCore
#endif // USE(LIBGBM)
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