DRM Module

DRM Display Interface. More...

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

Variables
static const EGLint	context_attribute_list []
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().

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 777 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 903 of file drmdevice.cpp.

Referenced by cDrmDevice::FindCrtcForConnector().

FindDrmConnector()

static drmModeConnector * FindDrmConnector ( int  fd, drmModeRes *  resources  )

static

Find a suitable connector, preferably a connected one.

Definition at line 182 of file drmdevice.cpp.

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 134 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 61 of file drmdevice.cpp.

References LOGERROR.

Referenced by FindDrmDevice(), and OpenDrmDevice().

GetEGLConfig()

EGLConfig cDrmDevice::GetEGLConfig ( void  )

private

Get a suitable EGLConfig.

Definition at line 664 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 112 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 653 of file drmdevice.cpp.

Referenced by cDrmDevice::InitEGL().