/*
* 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;
private:
void DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc);
bool DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, const std::unique_ptr<GRSurfaceDrm>& surface);
void DisableNonMainCrtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc);
drmModeConnector* FindMainMonitor(int fd, drmModeRes* resources, uint32_t* mode_index);
std::unique_ptr<GRSurfaceDrm> GRSurfaceDrms[2];
int current_buffer{ 0 };
drmModeCrtc* main_monitor_crtc{ nullptr };
drmModeConnector* main_monitor_connector{ nullptr };
int drm_fd{ -1 };
};
