Node groups

Higher-level recipes composed of multiple nodes. More...

Classes Index

struct	ImageInputGroupOptions
	Configuration for ImageInputGroup. More...
struct	InferOptions
	Tunables for the preprocess and combined-infer groups. More...
struct	RtspDecodedInputOptions
	Configuration for RtspDecodedInput. More...
struct	UdpH264OutputGroupOptions
	Configuration for UdpH264OutputGroup. More...
struct	UdpOutputGroupGOptions
	Configuration for UdpOutputGroupG. More...
struct	VideoInputGroupOptions
	Configuration for VideoInputGroup. More...

Functions Index

OutputSpec	ImageInputGroupOutputSpec (const ImageInputGroupOptions &opt)
	Project an ImageInputGroupOptions into the OutputSpec the group will advertise. More...
OutputSpec	RtspDecodedInputOutputSpec (const RtspDecodedInputOptions &opt)
	Project an RtspDecodedInputOptions into the OutputSpec the group will advertise. More...
OutputSpec	VideoInputGroupOutputSpec (const VideoInputGroupOptions &opt)
	Project a VideoInputGroupOptions into the OutputSpec the group will advertise. More...
simaai::neat::NodeGroup	ImageInputGroup (const ImageInputGroupOptions &opt)
	Build an image-input NodeGroup: file source, decoder, and imagefreeze to a video stream. More...
simaai::neat::NodeGroup	preprocessing (const std::string &tar_gz, const InferOptions &opt={})
	Build the preprocess NodeGroup for a model, given an MPK tarball path. More...
simaai::neat::NodeGroup	simple_infer (const std::string &tar_gz)
	Build a single-stage MLA-inference NodeGroup from an MPK tarball, with default options. More...
simaai::neat::NodeGroup	postprocessing (const std::string &tar_gz)
	Build the postprocess NodeGroup for a model, given an MPK tarball path. More...
simaai::neat::NodeGroup	infer (const std::string &tar_gz)
	Build the full preprocess + MLA + postprocess NodeGroup from an MPK tarball. More...
simaai::neat::NodeGroup	infer (const std::string &tar_gz, const InferOptions &opt)
	Build the full preprocess + MLA + postprocess NodeGroup with explicit options. More...
simaai::neat::NodeGroup	Preprocess (const simaai::neat::Model &model)
	Build the preprocess NodeGroup from an already-parsed Model. More...
simaai::neat::NodeGroup	MLA (const simaai::neat::Model &model)
	Build the MLA-inference NodeGroup from an already-parsed Model. More...
simaai::neat::NodeGroup	Postprocess (const simaai::neat::Model &model)
	Build the postprocess NodeGroup from an already-parsed Model. More...
simaai::neat::NodeGroup	Infer (const simaai::neat::Model &model)
	Build the full preprocess + MLA + postprocess NodeGroup from an already-parsed Model. More...
simaai::neat::NodeGroup	RtspDecodedInput (const RtspDecodedInputOptions &opt)
	Build the live-RTSP input NodeGroup: source, depayload+parse, hardware H.264 decode. More...
simaai::neat::NodeGroup	UdpH264OutputGroup (const UdpH264OutputGroupOptions &opt)
	Build a NodeGroup that H.264-encodes, RTP-packetizes, and sends frames over UDP. More...
simaai::neat::NodeGroup	UdpOutputGroupG (const UdpOutputGroupGOptions &opt)
	Build a NodeGroup that renders, encodes, and sends frames over UDP. More...
simaai::neat::NodeGroup	VideoInputGroup (const VideoInputGroupOptions &opt)
	Build the video-file input NodeGroup: file source, demux, H.264 parse, hardware decode. More...

Description

Higher-level recipes composed of multiple nodes.

Functions

ImageInputGroup()

simaai::neat::NodeGroup simaai::neat::nodes::groups::ImageInputGroup (const ImageInputGroupOptions & opt)

Build an image-input NodeGroup: file source, decoder, and imagefreeze to a video stream.

Typical chain: FileInput -> image decoder (decodebin / jpegdec / pngdec / SiMa decoder) -> optional videoconvert/videorate/videoscale -> imagefreeze with the configured output caps. Use this when a Session should be driven by a single still image rather than a live or file-based video source.

Parameters

opt	Configuration controlling source path, decoder backend, and output caps.

Returns

The configured NodeGroup ready to be add()ed to a Session.

See Also

VideoInputGroup

See Also

RtspDecodedInput

Definition at line 100 of file ImageInputGroup.h.

ImageInputGroupOutputSpec()

OutputSpec simaai::neat::nodes::groups::ImageInputGroupOutputSpec (const ImageInputGroupOptions & opt)

Project an ImageInputGroupOptions into the OutputSpec the group will advertise.

Parameters

opt	Image-input group options (path, decoder, output caps).

Returns

Negotiated downstream caps for this configuration.

Definition at line 30 of file GroupOutputSpec.h.

infer()

simaai::neat::NodeGroup simaai::neat::nodes::groups::infer (const std::string & tar_gz)

Build the full preprocess + MLA + postprocess NodeGroup from an MPK tarball.

Parameters

tar_gz

Path to the model .tar.gz.

Definition at line 81 of file ModelGroups.h.

infer()

simaai::neat::NodeGroup simaai::neat::nodes::groups::infer (const std::string & tar_gz, const InferOptions & opt)

Build the full preprocess + MLA + postprocess NodeGroup with explicit options.

Parameters

tar_gz	Path to the model .tar.gz.
opt	Preprocess tunables propagated into the chain.

Definition at line 89 of file ModelGroups.h.

Infer()

simaai::neat::NodeGroup simaai::neat::nodes::groups::Infer (const simaai::neat::Model & model)

Build the full preprocess + MLA + postprocess NodeGroup from an already-parsed Model.

Parameters

model

The parsed model (used by Model::session()).

Definition at line 117 of file ModelGroups.h.

MLA()

simaai::neat::NodeGroup simaai::neat::nodes::groups::MLA (const simaai::neat::Model & model)

Build the MLA-inference NodeGroup from an already-parsed Model.

Parameters

model

The parsed model (used by Model::session()).

Definition at line 103 of file ModelGroups.h.

Postprocess()

simaai::neat::NodeGroup simaai::neat::nodes::groups::Postprocess (const simaai::neat::Model & model)

Build the postprocess NodeGroup from an already-parsed Model.

Parameters

model

The parsed model (used by Model::session()).

Definition at line 110 of file ModelGroups.h.

postprocessing()

simaai::neat::NodeGroup simaai::neat::nodes::groups::postprocessing (const std::string & tar_gz)

Build the postprocess NodeGroup for a model, given an MPK tarball path.

Parameters

tar_gz

Path to the model .tar.gz.

Definition at line 74 of file ModelGroups.h.

Preprocess()

simaai::neat::NodeGroup simaai::neat::nodes::groups::Preprocess (const simaai::neat::Model & model)

Build the preprocess NodeGroup from an already-parsed Model.

Parameters

model

The parsed model (used by Model::session()).

Definition at line 96 of file ModelGroups.h.

preprocessing()

simaai::neat::NodeGroup simaai::neat::nodes::groups::preprocessing (const std::string & tar_gz, const InferOptions & opt={})

Build the preprocess NodeGroup for a model, given an MPK tarball path.

Parameters

tar_gz	Path to the model .tar.gz.
opt	Preprocess tunables (color format, normalization, queueing).

Definition at line 60 of file ModelGroups.h.

RtspDecodedInput()

simaai::neat::NodeGroup simaai::neat::nodes::groups::RtspDecodedInput (const RtspDecodedInputOptions & opt)

Build the live-RTSP input NodeGroup: source, depayload+parse, hardware H.264 decode.

Typical chain: rtspsrc -> RTP H.264 depayloader -> H264Parse -> SiMa hardware H.264 decoder -> optional videoconvert / videoscale. Use this as the head of a Session that runs detection or analytics on a live IP camera feed.

Parameters

opt	Configuration (URL, transport, parser fallback caps, decoder output).

Returns

The configured NodeGroup ready to be add()ed to a Session.

See Also

VideoInputGroup

See Also

H264Parse

Definition at line 90 of file RtspDecodedInput.h.

RtspDecodedInputOutputSpec()

OutputSpec simaai::neat::nodes::groups::RtspDecodedInputOutputSpec (const RtspDecodedInputOptions & opt)

Project an RtspDecodedInputOptions into the OutputSpec the group will advertise.

Parameters

opt	RTSP-input group options (url, latency, decoder, output caps).

Returns

Negotiated downstream caps for this configuration.

Definition at line 38 of file GroupOutputSpec.h.

simple_infer()

simaai::neat::NodeGroup simaai::neat::nodes::groups::simple_infer (const std::string & tar_gz)

Build a single-stage MLA-inference NodeGroup from an MPK tarball, with default options.

Parameters

tar_gz

Path to the model .tar.gz.

Definition at line 67 of file ModelGroups.h.

UdpH264OutputGroup()

simaai::neat::NodeGroup simaai::neat::nodes::groups::UdpH264OutputGroup (const UdpH264OutputGroupOptions & opt)

Build a NodeGroup that H.264-encodes, RTP-packetizes, and sends frames over UDP.

Typical chain: H.264 encoder -> RTP H.264 payloader -> udpsink. Use as the tail of a Session that should broadcast its rendered output as RTP/H.264 over UDP.

Parameters

opt	Encoder, RTP, and UDP-sink configuration.

Returns

The configured NodeGroup ready to be add()ed to a Session.

See Also

UdpOutputGroupG

See Also

ImageToH264RtspGroup

Definition at line 53 of file UdpH264OutputGroup.h.

UdpOutputGroupG()

simaai::neat::NodeGroup simaai::neat::nodes::groups::UdpOutputGroupG (const UdpOutputGroupGOptions & opt)

Build a NodeGroup that renders, encodes, and sends frames over UDP.

More flexible counterpart to UdpH264OutputGroup: accepts a render-stage configuration string and explicit encoder geometry, then mux/packetize and send to the configured UDP endpoint.

Parameters

opt	Render, encoder, and UDP-sink configuration.

Returns

The configured NodeGroup ready to be add()ed to a Session.

See Also

UdpH264OutputGroup

Definition at line 58 of file UdpOutputGroupG.h.

VideoInputGroup()

simaai::neat::NodeGroup simaai::neat::nodes::groups::VideoInputGroup (const VideoInputGroupOptions & opt)

Build the video-file input NodeGroup: file source, demux, H.264 parse, hardware decode.

Typical chain: FileInput -> decodebin/demuxer -> H264Parse -> SiMa hardware H.264 decoder -> optional videoconvert / videoscale. Use this as the head of a Session that runs against a recorded video file.

Parameters

opt	Configuration (path, parser tunables, decoder output, caps).

Returns

The configured NodeGroup ready to be add()ed to a Session.

See Also

RtspDecodedInput

See Also

H264Parse

Definition at line 78 of file VideoInputGroup.h.

VideoInputGroupOutputSpec()

OutputSpec simaai::neat::nodes::groups::VideoInputGroupOutputSpec (const VideoInputGroupOptions & opt)

Project a VideoInputGroupOptions into the OutputSpec the group will advertise.

Parameters

opt	Video-file-input group options (path, parse config, output caps).

Returns

Negotiated downstream caps for this configuration.

Definition at line 46 of file GroupOutputSpec.h.

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