QtV4L2 Namespace Reference

Classes
class	QV4L2Camera
class	QV4L2CameraDevices
class	QV4L2FileDescriptor
class	QV4L2MemoryTransfer
struct	V4L2CameraInfo
struct	V4L2FormatMapEntry

Typedefs
using	QV4L2FileDescriptorPtr = std::shared_ptr<QV4L2FileDescriptor>
using	QV4L2MemoryTransferUPtr = std::unique_ptr<QV4L2MemoryTransfer>

Functions
	Q_STATIC_LOGGING_CATEGORY (qLcV4L2Camera, "qt.multimedia.v4l2.camera")
static std::chrono::microseconds	toMicroseconds (const timeval &tv)
	Q_STATIC_LOGGING_CATEGORY (qLcV4L2CameraDevices, "qt.multimedia.v4l2.cameradevices")
static bool	areCamerasEqual (QSpan< const QCameraDevice > aa, QSpan< const QCameraDevice > bb)
	Q_STATIC_LOGGING_CATEGORY (qLcV4L2MemoryTransfer, "qt.multimedia.v4l2.memorytransfer")
QV4L2MemoryTransferUPtr	makeUserPtrMemoryTransfer (QV4L2FileDescriptorPtr fileDescriptor, const v4l2_pix_format &formatformat)
QV4L2MemoryTransferUPtr	makeMMapMemoryTransfer (QV4L2FileDescriptorPtr fileDescriptor, const v4l2_pix_format &formatformat)
QVideoFrameFormat::PixelFormat	formatForV4L2Format (uint32_t v4l2Format)
std::optional< uint32_t >	v4l2FormatForPixelFormat (QVideoFrameFormat::PixelFormat formatformat)
QVideoFrameFormat::ColorSpace	colorSpaceForV4L2Colorspace (v4l2_colorspace colorspace)
std::optional< v4l2_colorspace >	v4l2ColorspaceForColorSpace (QVideoFrameFormat::ColorSpace colorSpace)
QSize	sizeForV4L2Format (const v4l2_pix_format &pixFormat)

Variables
constexpr V4L2FormatMapEntry	formatMap []

Typedef Documentation

QV4L2FileDescriptorPtr

using QtV4L2::QV4L2FileDescriptorPtr = std::shared_ptr<QV4L2FileDescriptor>

Definition at line 34 of file qv4l2memorytransfer_p.h.

QV4L2MemoryTransferUPtr

using QtV4L2::QV4L2MemoryTransferUPtr = std::unique_ptr<QV4L2MemoryTransfer>

Definition at line 65 of file qv4l2memorytransfer_p.h.

Function Documentation

areCamerasEqual()

bool QtV4L2::areCamerasEqual ( QSpan< const QCameraDevice > a, QSpan< const QCameraDevice > b )

static

Definition at line 25 of file qv4l2cameradevices.cpp.

colorSpaceForV4L2Colorspace()

QVideoFrameFormat::ColorSpace QtV4L2::colorSpaceForV4L2Colorspace ( v4l2_colorspace colorspace )

inline

Definition at line 82 of file qv4l2formats_p.h.

formatForV4L2Format()

QVideoFrameFormat::PixelFormat QtV4L2::formatForV4L2Format ( uint32_t v4l2Format )

inline

Definition at line 60 of file qv4l2formats_p.h.

makeMMapMemoryTransfer()

QV4L2MemoryTransferUPtr QtV4L2::makeMMapMemoryTransfer	(	QV4L2FileDescriptorPtr	fileDescriptor,
		const v4l2_pix_format &	format )

Definition at line 389 of file qv4l2memorytransfer.cpp.

makeUserPtrMemoryTransfer()

QV4L2MemoryTransferUPtr QtV4L2::makeUserPtrMemoryTransfer	(	QV4L2FileDescriptorPtr	fileDescriptor,
		const v4l2_pix_format &	format )

Definition at line 382 of file qv4l2memorytransfer.cpp.

Q_STATIC_LOGGING_CATEGORY() [1/3]

QtV4L2::Q_STATIC_LOGGING_CATEGORY	(	qLcV4L2Camera	,
		"qt.multimedia.v4l2.camera"	)

Q_STATIC_LOGGING_CATEGORY() [2/3]

QtV4L2::Q_STATIC_LOGGING_CATEGORY	(	qLcV4L2CameraDevices	,
		"qt.multimedia.v4l2.cameradevices"	)

Q_STATIC_LOGGING_CATEGORY() [3/3]

QtV4L2::Q_STATIC_LOGGING_CATEGORY	(	qLcV4L2MemoryTransfer	,
		"qt.multimedia.v4l2.memorytransfer"	)

sizeForV4L2Format()

QSize QtV4L2::sizeForV4L2Format ( const v4l2_pix_format & pixFormat )

inline

Definition at line 118 of file qv4l2formats_p.h.

toMicroseconds()

std::chrono::microseconds QtV4L2::toMicroseconds ( const timeval & tv )

static

Definition at line 28 of file qv4l2camera.cpp.

v4l2ColorspaceForColorSpace()

std::optional< v4l2_colorspace > QtV4L2::v4l2ColorspaceForColorSpace ( QVideoFrameFormat::ColorSpace colorSpace )

inline

Definition at line 101 of file qv4l2formats_p.h.

v4l2FormatForPixelFormat()

std::optional< uint32_t > QtV4L2::v4l2FormatForPixelFormat ( QVideoFrameFormat::PixelFormat format )

inline

Definition at line 71 of file qv4l2formats_p.h.

References formatMap.

Variable Documentation

formatMap

V4L2FormatMapEntry QtV4L2::formatMap[]

inlineconstexpr

Initial value:

                                              = {
    { QVideoFrameFormat::Format_YUV420P, V4L2_PIX_FMT_YUV420 },
    { QVideoFrameFormat::Format_YUV422P, V4L2_PIX_FMT_YUV422P },
    { QVideoFrameFormat::Format_YUYV, V4L2_PIX_FMT_YUYV },
    { QVideoFrameFormat::Format_UYVY, V4L2_PIX_FMT_UYVY },
    { QVideoFrameFormat::Format_XBGR8888, V4L2_PIX_FMT_XBGR32 },
    { QVideoFrameFormat::Format_XRGB8888, V4L2_PIX_FMT_XRGB32 },
    { QVideoFrameFormat::Format_ABGR8888, V4L2_PIX_FMT_ABGR32 },
    { QVideoFrameFormat::Format_ARGB8888, V4L2_PIX_FMT_ARGB32 },
    { QVideoFrameFormat::Format_BGRX8888, V4L2_PIX_FMT_BGR32 },
    { QVideoFrameFormat::Format_RGBX8888, V4L2_PIX_FMT_RGB32 },
    { QVideoFrameFormat::Format_BGRA8888, V4L2_PIX_FMT_BGRA32 },
    { QVideoFrameFormat::Format_RGBA8888, V4L2_PIX_FMT_RGBA32 },
    { QVideoFrameFormat::Format_Y8, V4L2_PIX_FMT_GREY },
    { QVideoFrameFormat::Format_Y16, V4L2_PIX_FMT_Y16 },
    { QVideoFrameFormat::Format_NV12, V4L2_PIX_FMT_NV12 },
    { QVideoFrameFormat::Format_NV21, V4L2_PIX_FMT_NV21 },
 
    
    { QVideoFrameFormat::Format_Jpeg, V4L2_PIX_FMT_MJPEG },
    { QVideoFrameFormat::Format_Jpeg, V4L2_PIX_FMT_JPEG },
}

Definition at line 37 of file qv4l2formats_p.h.

Referenced by v4l2FormatForPixelFormat().