What is the usefulness and specific usage of dce in tegra？

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IN THIShttps://github.com/Sphynx-Development/android_kernel_nvidia_nvidia/tree/123dbf79dcb891c31cdf1583a8c0ccc21ad3f4b9/drivers/platform/tegra/dce/include
what is the usefulness and specific usage of dce in tegra？
THANKS!