extract_region_channel()

MAYAFLUX_API std::vector< double > MayaFlux::Kakshya::extract_region_channel	(	const Region &	region,
		const std::shared_ptr< SignalSourceContainer > &	container,
		uint32_t	channel
	)

Extract samples for a single channel within a Region from a container.

Slices the container's channel data by the sample range defined by region's start_coordinates[0] and end_coordinates[0] (inclusive). Uses get_region_data for the slice, then converts the requested channel variant to double. Returns an empty vector on any error (null container, channel out of range, empty region data).

This is the domain-neutral replacement for Granular::extract_grain_samples. It carries no assumption about grains, hop sizes, or granular semantics.

Parameters

region	Region whose first coordinate pair defines the sample range.
container	Signal data source.
channel	Zero-based channel index.

Returns

Vector of double samples for the requested region and channel.

Definition at line 200 of file ContainerUtils.cpp.

{
    if (!container)
        return {};
 
    auto variants = container->get_region_data(region);
 
    if (channel >= variants.size())
        return {};
 
    std::vector<double> storage;
    Kakshya::extract_from_variant<double>(variants[channel], storage);
    return storage;
}

References channel, and storage.

Referenced by MayaFlux::Yantra::Granular::AttributeOp::compute_grain_attribute().

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