extract_frame_data()

void MayaFlux::Buffers::VideoStreamReader::extract_frame_data ( const std::shared_ptr< TextureBuffer > &  texture_buffer )

private

Extract frame pixel data from processed_data into the TextureBuffer.

Parameters

texture_buffer

The TextureBuffer to write into.

Definition at line 129 of file VideoContainerBuffer.cpp.

{
    if (!m_container) {
        return;
    }
 
    auto& processed_data = m_container->get_processed_data();
    if (processed_data.empty()) {
        return;
    }
 
    const auto* pixel_vec = std::get_if<std::vector<uint8_t>>(&processed_data[0]);
    if (!pixel_vec || pixel_vec->empty()) {
        return;
    }
 
    uint64_t expected_size = static_cast<uint64_t>(texture_buffer->get_width())
        * texture_buffer->get_height()
        * Portal::Graphics::TextureLoom::get_bytes_per_pixel(texture_buffer->get_format());
 
    size_t copy_size = std::min(pixel_vec->size(), static_cast<size_t>(expected_size));
 
    if (copy_size < expected_size) {
        MF_WARN(Journal::Component::Buffers, Journal::Context::BufferProcessing,
            "VideoStreamReader: processed frame is {} bytes, texture expects {}; "
            "uploading a partial surface",
            pixel_vec->size(), expected_size);
    }
 
    texture_buffer->set_pixel_data(pixel_vec->data(), copy_size);
}

References MayaFlux::Journal::BufferProcessing, MayaFlux::Journal::Buffers, MayaFlux::Portal::Graphics::TextureLoom::get_bytes_per_pixel(), m_container, and MF_WARN.

Referenced by on_attach(), and processing_function().

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