on_attach()

void MayaFlux::Buffers::VideoStreamReader::on_attach ( const std::shared_ptr< Buffer > &  buffer )

overridevirtual

Attach the reader to a TextureBuffer.

Registers as a dimension reader on the container, validates that the container is ready, and performs an initial frame extraction.

Parameters

buffer

The TextureBuffer to attach to.

Reimplemented from MayaFlux::Buffers::BufferProcessor.

Definition at line 25 of file VideoContainerBuffer.cpp.

{
    if (!m_container || !buffer) {
        return;
    }
 
    m_reader_id = m_container->register_dimension_reader(0);
 
    if (!m_container->is_ready_for_processing()) {
        error<std::runtime_error>(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            std::source_location::current(),
            "VideoStreamReader: Container not ready for processing");
    }
 
    try {
        auto texture_buffer = std::dynamic_pointer_cast<TextureBuffer>(buffer);
        if (!texture_buffer) {
            error<std::runtime_error>(Journal::Component::Buffers, Journal::Context::BufferProcessing,
                std::source_location::current(),
                "VideoStreamReader: Buffer must be a TextureBuffer");
        }
 
        extract_frame_data(texture_buffer);
 
        if (m_update_flags) {
            buffer->mark_for_processing(true);
        }
 
    } catch (const std::exception& e) {
        MF_ERROR(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "VideoStreamReader: Error during on_attach: {}", e.what());
    }
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, extract_frame_data(), m_container, m_reader_id, m_update_flags, and MF_ERROR.

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