DRM Display Interface. More...

Classes
struct	sDrmMode
	Holds possible display configurations. More...

struct	format_plane_info

struct	format_info

class	cDrmBuffer
	DRM Buffer. More...

class	cDrmBufferPool
	DRM Buffer Pool. More...

class	cDrmDevice
	DRM Device. More...

struct	vector

struct	colorspace

class	cHdrMetadata
	HDR Metadata. More...

class	cDrmPlane
	DRM Plane. More...

Macros
#define	ARRAY_LENGTH(a) (sizeof(a) / sizeof(a)[0])

Enumerations
enum	hdrMetadataEotf { EOTF_TRADITIONAL_GAMMA_SDR , EOTF_TRADITIONAL_GAMMA_HDR , EOTF_ST2084 , EOTF_HLG }

enum	metadataId { METADATA_TYPE1 }

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

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 bool	Contains (drmModeModeInfo *mode, std::vector< sDrmMode > modes)
	Test, if the given mode is included in the given array.

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.

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

static uint16_t	EncodeXYY (float xyy)

static struct colorspace *	colorspace_lookup (const char *name)

drmModeConnector *	cDrmDevice::FindDrmConnector (int, drmModeRes , const char )
	Find a suitable connector, preferably a connected one.

EGLConfig	cDrmDevice::GetEGLConfig (void)
	Get a suitable EGLConfig.

Variables
static const EGLint	context_attribute_list []

constexpr std::array	DrmModeWhitelist
	Whitelist of possible drm modes.

static struct colorspace	bt709
	BT709 Color Space.

static struct colorspace	bt2020
	BT2020 Color Space.

static struct colorspace	bt470bg
	BT470bg Color Space.

static struct colorspace *const	colorspaces []

Detailed Description

DRM Display Interface.

Macro Definition Documentation

◆ ARRAY_LENGTH

#define ARRAY_LENGTH ( a ) (sizeof(a) / sizeof(a)[0])

Definition at line 85 of file drmhdr.h.

Enumeration Type Documentation

◆ hdrMetadataEotf

enum hdrMetadataEotf

Enumerator
EOTF_TRADITIONAL_GAMMA_SDR
EOTF_TRADITIONAL_GAMMA_HDR
EOTF_ST2084
EOTF_HLG

Definition at line 28 of file drmhdr.cpp.

◆ metadataId

enum metadataId

Enumerator
METADATA_TYPE1

Definition at line 36 of file drmhdr.cpp.

Function Documentation

◆ colorspace_lookup()

static struct colorspace * colorspace_lookup ( const char * name )

inlinestatic

Definition at line 86 of file drmhdr.h.

References ARRAY_LENGTH, colorspaces, and colorspace::name.

Referenced by cHdrMetadata::Build().

◆ Contains()

static bool Contains	(	drmModeModeInfo *	mode,
		std::vector< sDrmMode >	modes
	)

static

Test, if the given mode is included in the given array.

Only width, height, refresh rate and the interlaced flag is tested. Other flags and values are ignored.

Parameters

mode	mode info of the mode
modes	mode array to search in

Return values

true	if the mode is included
false	if the mode is not included

Definition at line 301 of file drmdevice.cpp.

References AlmostEqual(), GetRefreshRateHz(), and InterlacedMode().

Referenced by cDrmDevice::Init().

◆ drm_fb_destroy_callback()

static void drm_fb_destroy_callback	(	struct gbm_bo *	bo,
		void *	data
	)

static

Callback function to destroy a drm buffer which stays in the gbm_bo's user data.

Definition at line 994 of file drmdevice.cpp.

Referenced by cDrmDevice::GetBufFromBo().

◆ EncodeXYY()

static uint16_t EncodeXYY ( float xyy )

inlinestatic

Definition at line 41 of file drmhdr.cpp.

Referenced by cHdrMetadata::Build().

◆ FindCrtcForEncoder()

static int32_t FindCrtcForEncoder	(	const drmModeRes *	resources,
		const drmModeEncoder *	encoder
	)

static

Find the CRTC_ID for the given encoder.

Parameters

resources	drm resources
encoder	drm encoder

Returns: CRTC_ID

Definition at line 1120 of file drmdevice.cpp.

Referenced by cDrmDevice::FindCrtcForConnector().

◆ FindDrmConnector()

drmModeConnector * cDrmDevice::FindDrmConnector	(	int	fd,
		drmModeRes *	resources,
		const char *	userRequestedConnector
	)

private

Find a suitable connector, preferably a connected one.

Connector selection priority: 1) Try user requested connector (-x HDMI-A-1) 2) Try suitable connected connector 3) Try suitable unconnected connector

Definition at line 216 of file drmdevice.cpp.

References ConnectorName(), and LOGWARNING.

Referenced by cDrmDevice::Init().

◆ FindDrmDevice()

static int FindDrmDevice ( drmModeRes ** resources )

static

Find and open a suitable device with the wanted capabilities.

Returns: the file descriptor of the opened device

Definition at line 153 of file drmdevice.cpp.

References get_resources(), LOGERROR, and TestCaps().

Referenced by cDrmDevice::Init().

◆ get_resources()

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

static

Definition at line 80 of file drmdevice.cpp.

References LOGERROR.

Referenced by FindDrmDevice(), and OpenDrmDevice().

◆ GetEGLConfig()

EGLConfig cDrmDevice::GetEGLConfig ( void )

private

Get a suitable EGLConfig.

Definition at line 881 of file drmdevice.cpp.

References EGL_CHECK, L_OPENGL, LOGDEBUG2, LOGFATAL, and cDrmDevice::m_eglDisplay.

Referenced by cDrmDevice::InitEGL().

◆ OpenDrmDevice()

static int OpenDrmDevice	(	const char *	device,
		drmModeRes **	resources
	)

static

Open the given device.

Parameters

deviceName name of the device (e.g. "/dev/dri/card0")

Return values

file	handle on success
-1	if open failed

Definition at line 131 of file drmdevice.cpp.

References get_resources(), and TestCaps().

Referenced by cDrmDevice::Init().

Variable Documentation

◆ bt2020

struct colorspace bt2020

static

Initial value:

= {
    .r =          {{ 0.708f,  0.292f,  }},
    .g =          {{ 0.170f,  0.797f,  }},
    .b =          {{ 0.131f,  0.046f,  }},
    .whitepoint = {{ 0.3127f, 0.3290f, }},
    .name = "BT.2020",
    .whitepoint_name = "D65",
}

BT2020 Color Space.

Definition at line 59 of file drmhdr.h.

◆ bt470bg

struct colorspace bt470bg

static

Initial value:

= {
    .r =          {{ 0.640f,  0.330f,  }},
    .g =          {{ 0.290f,  0.600f,  }},
    .b =          {{ 0.150f,  0.060f,  }},
    .whitepoint = {{ 0.3127f, 0.3290f, }},
    .name = "BT.470 B/G",
    .whitepoint_name = "D65",
}

BT470bg Color Space.

Definition at line 72 of file drmhdr.h.

◆ bt709

struct colorspace bt709

static

Initial value:

= {
    .r =          {{ 0.640f,  0.330f,  }},
    .g =          {{ 0.300f,  0.600f,  }},
    .b =          {{ 0.150f,  0.060f,  }},
    .whitepoint = {{ 0.3127f, 0.3290f, }},
    .name = "BT.709",
    .whitepoint_name = "D65",
}

BT709 Color Space.

Definition at line 47 of file drmhdr.h.

◆ colorspaces

struct colorspace* const colorspaces[]

static

Initial value:

= {
    &bt709, &bt2020, &bt470bg,
}

Definition at line 81 of file drmhdr.h.

Referenced by colorspace_lookup().

◆ context_attribute_list

const EGLint context_attribute_list[]

static

Initial value:

=
{
    EGL_CONTEXT_CLIENT_VERSION, 2,
    EGL_NONE
}

Definition at line 870 of file drmdevice.cpp.

Referenced by cDrmDevice::InitEGL().

◆ DrmModeWhitelist

constexpr std::array DrmModeWhitelist

inlineconstexpr

Whitelist of possible drm modes.

Definition at line 46 of file drmdevice.h.

Referenced by cDrmDevice::Init().

Classes

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ ARRAY_LENGTH

Enumeration Type Documentation

◆ hdrMetadataEotf

◆ metadataId

Function Documentation

◆ colorspace_lookup()

◆ Contains()

◆ drm_fb_destroy_callback()

◆ EncodeXYY()

◆ FindCrtcForEncoder()

◆ FindDrmConnector()

◆ FindDrmDevice()

◆ get_resources()

◆ GetEGLConfig()

◆ OpenDrmDevice()

Variable Documentation

◆ bt2020

◆ bt470bg

◆ bt709

◆ colorspaces

◆ context_attribute_list

◆ DrmModeWhitelist