Crate linux_video_core

Expand description

§Core Linux V4L2 API for Rust (core)

This crates intended to provide access to Linux V4L2 APIs without any limitations.

The primary design goal is an optimal balance between safety and overhead. The implementation much closer to system calls than v4l. Interface types wraps kernel types to avoid unnecessary copying.

At end this is my demure attempt to do things right.

§Crates

linux-video-core - core abstractions and low level interface (not for end users)
linux-video - sync interface which supports synchronous operation only
tokio-linux-video - async interface for tokio users
async-std-linux-video - async interface for async-std users

This crate provides low-level bindings and does not intended to end-users.

Modules§

private

Structs§

Area: Area data
Audio
AudioCapabilityFlag
AudioOut
AutoFocusStatus
BandModulation
BtTimings
BtTimingsCap
Buffer
BufferCapabilityFlag
BufferData
BufferFlag
BufferRef
Capability
CapabilityFlag
CaptureParm
ChipFlag
ChipMatch
Clip
Control
CreateBuffers
Crop
CropCap
CtrlEnumFlag
CtrlFlag
DbgChipInfo
DbgMatch
DbgRegister
DecCmdFlag
DecoderCmd
DecoderCmdUnionRaw
DecoderCmdUnionStart
DecoderCmdUnionStop
DvBtCapabilityFlag
DvBtStd: Timings standards
DvFlag
DvSyncPol: Polarities
DvTimings
DvTimingsCap
Edid
EncCmdFlag
EncIdx
EncIdxEntry
EncoderCmd
EncoderCmdUnionRaw
EnumDvTimings
Error: The error type for I/O operations of the Read, Write, Seek, and associated traits.
Event
EventCtrl
EventCtrlChangeFlag
EventFrameSync
EventMotionDet
EventMotionDetFlag
EventSrcChange
EventSrcChangeFlag
EventSubFlag
EventSubscription
EventVsync
ExportBuffer
ExtControl
ExtControls
FlashFault
FmtDesc: Format description
FmtFlag
Format: Stream data format
Fract: Fraction value
FrameBuffer
FrameBufferCapabilityFlag
FrameBufferFlag
FrameBufferFmt
Frequency
FrequencyBand
FrmIvalEnum: Frame interval description
FrmIvalStepwise: Stepwise frame interval
FrmSizeEnum: Frame size description
FrmSizeIter
FrmSizeStepwise: Stepwise frame sizes
FwhtFlag
FwhtParams
H264DecodeParamFlag
H264DecodeParams
H264DpbEntry
H264DpbEntryFlag
H264Pps
H264PpsFlag
H264PredWeights
H264Reference
H264ScalingMatrix
H264SliceFlag
H264SliceParams
H264Sps
H264SpsConstraintFlag
H264SpsFlag
H264WeightFactors
Hdr10CllInfo
Hdr10Mastering
Hdr10MasteringDisplay
HwFreqSeek
In: Capture (input direction)
Input
InputCapabilityFlag
InputStatusFlag
IoCapabilityFlag
JpegCompression
JpegMarker
Lock
MemoryFlag
MenuItem: Helper type to represent menu item
MetaFormat: Metadata format definition
Mmap: Memory mapping
Modulator
Mpeg2PicFlag
Mpeg2Picture
Mpeg2Quantisation
Mpeg2SeqFlag
Mpeg2Sequence
MpegVbiFmtIvtv
MpegVbiITV0
MpegVbiItv0
MpegVbiItv0Line
Out: Render (output direction)
Output
OutputCapabilityFlag
OutputParm
PixFmtFlag
PixFormat: Single-planar pixel format
PixFormatMplane: Multiplanar format definition
Plane
PlanePixFormat: Per-plane format definition
QueryCtrl
QueryExtCtrl
QueryMenu
QueueData
RdsBlockFlag
RdsData
Rect: Rectangle data
RequestBuffers
SdrFormat: SDR format definition
Selection
SelectionFlag
SlicedVbiCap
SlicedVbiData
SlicedVbiFormat
SlicedVbiType
Standard
StdId
StreamParm
TimeCode: Time code
TimeCodeFlag
TimeCodeUserBits
Tuner
TunerCapabilityFlag
TunerModeFlag
TunerSubFlag
UserPtr: Userspace pointer
Value: Control value
Values: Control values
VbiFlags
VbiFormat
VersionTriple: Version numbers
Vp8Entropy
Vp8EntropyCoderState
Vp8Frame
Vp8FrameFlag
Vp8LoopFilter
Vp8Quantization
Vp8Segment
Vp8SegmentFlag
Vp9CompressedHdr
Vp9Frame
Vp9FrameFlag
Vp9LoopFilter
Vp9LoopFilterFlag
Vp9MvProbs
Vp9Quantization
Vp9Segmentation
Vp9SegmentationFlag
Vp9SignBias
Window

Enums§

AudioMode
AutoFocusRange
AutoNPresentWhiteBalance
BufferType
CameraOrientation
CidMpegVideoHevcLoopFilterMode
CidMpegVideoHevcRefreshType
CidMpegVideoHevcSizeOfLengthField
ColorFx
ColorSpace: Colorspace enum
ContentType: Buffer content type
CtrlBase
CtrlClass
CtrlId
CtrlType
DecCmd
DecStartFmt
Deempasis
DetectMdMode
DvFormat
DvItContentType
DvRgbRange
DvTimingsType
DvTxMode
EncCmd
EncIdxFrame
EventType
ExposureAutoType
ExposureMetering
Field
FlashLedMode
FlashStrobeSource
FourCc
FrmIvalType
FrmSizeType
FwhtVersion
H264Ref
H264SliceType
HsvEncoding
InputType
IoMode
IsoSensitivityAutoType
JpegActiveMarker
JpegChromaSubsampling
Memory
Mpeg2Pic
Mpeg2PicCodingType
MpegAudioAc3Bitrate
MpegAudioCrc
MpegAudioDecPlayback
MpegAudioEmphasis
MpegAudioEncoding
MpegAudioL1Bitrate
MpegAudioL2Bitrate
MpegAudioL3Bitrate
MpegAudioMode
MpegAudioModeExtension
MpegAudioSamplingFreq
MpegCx2341xVideoChromaSpatialFilterType
MpegCx2341xVideoLumaSpatialFilterType
MpegCx2341xVideoMedianFilterType
MpegCx2341xVideoTemporalFilterMode
MpegMfc51VideoForceFrameSkipMode
MpegMfc51VideoForceFrameType
MpegStreamType
MpegStreamVbiFmt
MpegVbiIvtvType
MpegVideoAspect
MpegVideoBitrateMode
MpegVideoEncoding
MpegVideoFrameSkipMode
MpegVideoH264EntropyMode
MpegVideoH264FmoChangeDir
MpegVideoH264FmoMapType
MpegVideoH264HierCodingType
MpegVideoH264Level
MpegVideoH264Profile
MpegVideoH264SeiFpArrangementType
MpegVideoH264VuiSarIdc
MpegVideoHeaderMode
MpegVideoHevcHierCodingType
MpegVideoHevcLevel
MpegVideoHevcProfile
MpegVideoHevcTier
MpegVideoLoopFilterMode
MpegVideoMpeg2Level
MpegVideoMpeg2Profile
MpegVideoMpeg4Level
MpegVideoMpeg4Profile
MpegVideoMultiSliceMode
MpegVideoVp8Profile
MpegVideoVp9Level
MpegVideoVp9Profile
OutputType
PowerLineFrequency
Preemphasis
Priority
Quantization: The default for R’G’B’ quantization is always full range. For Y’CbCr the quantization is always limited range, except for ColorSpace::Jpeg: this is full range.
SceneMode
SelectionTarget
StatelessH264DecodeMode
StatelessH264StartCode
TimeCodeType
Timestamp
TimestampSrc
TunerType
Vp8GoldenFrameSel
Vp8NumPartitions
Vp8NumRefFrames
Vp9InterpFilter
Vp9ReferenceMode
Vp9ResetFrameCtx
Vp9SegmentationLevel
Vp9TxMode
XferFunc: Mapping of XferFunc::Default to actual transfer functions for the various colorspaces
YcbcrEncoding: Mapping of YcbcrEncoding::Default to actual encodings for the various colorspaces

Constants§

Traits§

Direction: Direction types
GetValue
IsEventData
IsFormatData: Format data types
IsFrmIvalData
IsFrmSizeData
IsPlainCtrlData: Plain control value types
IsStreamParm: Stream parameter types
IsTimestamp: Something which can be used as timestamp
Method: I/O method types
MutValue
RefValue
SetValue

Type Aliases§

FrmIvalDiscrete: Discrete frame interval
FrmSizeDiscrete: Discrete frame size
Result: A specialized Result type for I/O operations.

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