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73 lines
2.6 KiB
73 lines
2.6 KiB
4 months ago
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/*
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* Copyright (c) 2017, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DRM_RES_MGR_H__
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#define __DRM_RES_MGR_H__
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <mutex>
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namespace drm_utils {
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class DRMResMgr {
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public:
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/* Returns the default connector id for primary panel */
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void GetConnectorId(uint32_t *id) { *id = conn_->connector_id; }
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/* Returns the default crtc id for primary pipeline */
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void GetCrtcId(uint32_t *id) { *id = crtc_->crtc_id; }
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/* Returns the default mode currently used by the connector */
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void GetMode(drmModeModeInfo *mode) { *mode = conn_->modes[0]; }
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/* Returns the panel dimensions in mm */
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void GetDisplayDimInMM(uint32_t *w, uint32_t *h) {
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*w = conn_->mmWidth;
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*h = conn_->mmHeight;
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}
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/* Creates and initializes an instance of DRMResMgr. On success, returns a pointer to it, on
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* failure returns -ENODEV */
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static int GetInstance(DRMResMgr **res_mgr);
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private:
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int Init();
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drmModeRes *res_ = nullptr;
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drmModeConnector *conn_ = nullptr;
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drmModeEncoder *enc_ = nullptr;
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drmModeCrtc *crtc_ = nullptr;
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static DRMResMgr *s_instance;
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static std::mutex s_lock;
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};
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} // namespace drm_utils
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#endif // __DRM_RES_MGR_H__
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