DRM Device. More...

#include <cerrno>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <cinttypes>
#include <vector>
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <drm_fourcc.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include "drmdevice.h"
#include "drmplane.h"
#include "logger.h"
#include "videorender.h"

Functions
static int	get_resources (int fd, drmModeRes **resources)

static int	TestCaps (int fd)
	Test drm capabilities.

static int	OpenDrmDevice (const char device, drmModeRes *resources)
	Open the given device.

static int	FindDrmDevice (drmModeRes **resources)
	Find and open a suitable device with the wanted capabilities.

static drmModeConnector *	FindDrmConnector (int fd, drmModeRes *resources)
	Find a suitable connector, preferably a connected one.

static void	drm_fb_destroy_callback (struct gbm_bo bo, void data)
	Callback function to destroy a drm buffer which stays in the gbm_bo's user data.

	__attribute__ ((weak)) union gbm_bo_handle gbm_bo_get_handle_for_plane(struct gbm_bo *bo

static int32_t	FindCrtcForEncoder (const drmModeRes resources, const drmModeEncoder encoder)
	Find the CRTC_ID for the given encoder.

Variables
PFNEGLGETPLATFORMDISPLAYEXTPROC	get_platform_display = NULL

PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC	get_platform_surface = NULL

static const EGLint	context_attribute_list []

int	plane

Detailed Description

DRM Device.

This file defines cDrmDevice, which keeps some functions to interact with the DRM (display) system.

Copyright: 2018 by zille. All Rights Reserved.; 2025 - 2026 by Andreas Baierl. All Rights Reserved.

License: AGPL-3.0-or-later

Definition in file drmdevice.cpp.

Function Documentation

◆ attribute()

__attribute__ ( (weak) )

◆ TestCaps()

static int TestCaps ( int fd )

static

Test drm capabilities.

Return values

0	if all needed caps match
1	on mismatch

Definition at line 77 of file drmdevice.cpp.

Referenced by FindDrmDevice(), and OpenDrmDevice().

Variable Documentation

◆ get_platform_display

PFNEGLGETPLATFORMDISPLAYEXTPROC get_platform_display = NULL

Definition at line 649 of file drmdevice.cpp.

Referenced by cDrmDevice::InitEGL().

◆ get_platform_surface

PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC get_platform_surface = NULL

Definition at line 650 of file drmdevice.cpp.

Referenced by cDrmDevice::InitEGL().

◆ plane

int plane

Definition at line 789 of file drmdevice.cpp.

Referenced by cDrmBuffer::cDrmBuffer(), cGrabBuffer::FreeDrmBuf(), cSoftHdGrab::GetGrab(), cDrmDevice::Init(), and cDrmBuffer::Setup().

Functions

Variables