processed_frame_as_float()

std::span< const float > MayaFlux::Kakshya::WindowContainer::processed_frame_as_float

(

uint32_t

frame_index = 0

)

const

processed_data[frame_index] as a normalised float span.

Valid after WindowAccessProcessor has written processed_data[frame_index]. uint8_t values divided by 255.0f; uint16_t by 65535.0f; float is zero-copy. Returns empty span if frame_index is out of range or the variant holds a non-pixel type.

Result is cached per slot and reused until invalidate_float_frame_cache() is called for that slot.

Parameters

frame_index

Zero-based index into processed_data. Defaults to 0.

Returns

Normalised float span, width * height * channels elements.

Definition at line 474 of file WindowContainer.cpp.

{
    if (frame_index >= m_processed_data.size())
        return {};
 
    if (!m_normalised_dirty[frame_index].load(std::memory_order_acquire))
        return { m_normalised_cache[frame_index] };
 
    std::span<const float> result;
    seqlock_read_void(m_data_lock, 8, [&] {
        result = Kakshya::as_normalised_float(m_processed_data[frame_index], m_normalised_cache[frame_index]);
    });
 
    if (!result.empty())
        m_normalised_dirty[frame_index].store(false, std::memory_order_release);
 
    return result;
}

References MayaFlux::Kakshya::as_normalised_float(), m_data_lock, m_normalised_cache, m_normalised_dirty, m_processed_data, and MayaFlux::store().

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