Abstract

This chapter discusses an interesting application that allows one to explore a range of aspects of OpenCL. The application is a video processor that takes a video stream and performs image-processing operations (effects) on its content using OpenCL. The resulting output is a video stream that can be presented to the display in real time. The application usage can scale when applying multiple effects to a video stream or when multiple input video streams are enhanced to combine multiple video streams together to produce a single output stream. The OpenVideo Decode API supports efficient decoding of video streams without significantly impacting power usage. Interoperability between OpenGL and OpenCL enables efficient data sharing, avoiding duplication of data structures when they are already present in a given device’s memory.

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