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/*
* Copyright (c) 2017, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 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.
*/
#ifndef __DRM_RES_MGR_H__
#define __DRM_RES_MGR_H__
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <mutex>
namespace drm_utils {
class DRMResMgr {
public:
/* Returns the default connector id for primary panel */
void GetConnectorId(uint32_t *id) { *id = conn_->connector_id; }
/* Returns the default crtc id for primary pipeline */
void GetCrtcId(uint32_t *id) { *id = crtc_->crtc_id; }
/* Returns the default mode currently used by the connector */
void GetMode(drmModeModeInfo *mode) { *mode = conn_->modes[0]; }
/* Returns the panel dimensions in mm */
void GetDisplayDimInMM(uint32_t *w, uint32_t *h) {
*w = conn_->mmWidth;
*h = conn_->mmHeight;
}
/* Creates and initializes an instance of DRMResMgr. On success, returns a pointer to it, on
* failure returns -ENODEV */
static int GetInstance(DRMResMgr **res_mgr);
private:
int Init();
drmModeRes *res_ = nullptr;
drmModeConnector *conn_ = nullptr;
drmModeEncoder *enc_ = nullptr;
drmModeCrtc *crtc_ = nullptr;
static DRMResMgr *s_instance;
static std::mutex s_lock;
};
} // namespace drm_utils
#endif // __DRM_RES_MGR_H__
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