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# GXF extensions See the User Guide for details regarding the extensions in GXF and Holoscan SDK, and for instructions to build your own extensions - `bayer_demosaic`: includes the `nvidia::holoscan::BayerDemosaic` codelet. It performs color filter array (CFA) interpolation for 1-channel inputs of 8 or 16-bit unsigned integer and outputs an RGB or RGBA image. - `gxf_holoscan_wrapper`: includes the `holoscan::gxf::OperatorWrapper` codelet. It is used as a utility base class to wrap a holoscan operator to interface with the GXF framework. - `opengl_renderer`: includes the `nvidia::holoscan::OpenGLRenderer` codelet. It displays a VideoBuffer, leveraging OpenGL/CUDA interop. - `stream_playback`: includes the `nvidia::holoscan::stream_playback::VideoStreamSerializer` entity serializer to/from a Tensor Object. - `ucx_holoscan`: includes `nvidia::holoscan::UcxHoloscanComponentSerializer` which is a `nvidia::gxf::ComponentSerializer` that handles serialization and deserialization of `holoscan::Message` and `holoscan::Tensor` types over a Unified Communication X (UCX) network connection. UCX is used by Holoscan SDK to send data between fragments of distributed applications. This extension must be used in combination with standard GXF UCX extension components. Specifically, this `UcxHoloscanComponentSerializer` is intended for use by the `UcxEntitySerializer` where it can operate alongside the `UcxComponentSerializer` that serializes GXF-specific types (`nvidia::gxf::Tensor`, `nvidia::gxf::VideoBuffer`, etc.).

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