/*
* Copyright ( C ) 2017 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <xf86drmMode.h>
#include "graphics.h"
#include "minui/minui.h"
class GRSurfaceDrm : public GRSurface {
public :
~GRSurfaceDrm() override;
// Creates a GRSurfaceDrm instance.
static std::unique_ptr<GRSurfaceDrm> Create(int drm_fd, int width, int height);
uint8_t* data() override {
return mmapped_buffer_;
}
private :
friend class MinuiBackendDrm;
GRSurfaceDrm(size_t width, size_t height, size_t row_bytes, size_t pixel_bytes, int drm_fd,
uint32_t handle)
: GRSurface(width, height, row_bytes, pixel_bytes), drm_fd_(drm_fd), handle(handle) {}
const int drm_fd_;
uint32_t fb_id{ 0 };
uint32_t handle{ 0 };
uint8_t* mmapped_buffer_{ nullptr };
};
class MinuiBackendDrm : public MinuiBackend {
public :
MinuiBackendDrm() = default ;
~MinuiBackendDrm() override;
GRSurface* Init() override;
GRSurface* Flip() override;
void Blank(bool ) override;
void Blank(bool blank, DrmConnector index) override;
bool HasMultipleConnectors() override;
private :
void DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc);
bool DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, const std::unique_ptr<GRSurfaceDrm>& surface,
uint32_t* conntcors);
void DisableNonMainCrtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc);
bool FindAndSetMonitor(int fd, drmModeRes* resources);
struct DrmInterface {
std::unique_ptr<GRSurfaceDrm> GRSurfaceDrms[2 ];
int current_buffer{ 0 };
drmModeCrtc* monitor_crtc{ nullptr };
drmModeConnector* monitor_connector{ nullptr };
uint32_t selected_mode{ 0 };
} drm[DRM_MAX];
int drm_fd{ -1 };
DrmConnector active_display = DRM_MAIN;
};
Messung V0.5 in Prozent C=92 H=94 G=92
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-07-01)
¤
*© Formatika GbR, Deutschland