Unified real time software decoder for HEVC extensions

There are several High Efficiency Video Coding (HEVC) extensions providing new tools on the top of a common HEVC base layer. These HEVC extensions enable higher temporal, spatial or quality of the video, 3-D rendering and range extension. In addition to the conforming HEVC decoder, the end-user need to support the decoding of the HEVC extension to benefits from its tools. In this paper we propose an unified software decoder enabling to decode all HEVC extensions. This solution is based on the open source project OpenHEVC which implements a conforming HEVC decoder. The new tools defined in HEVC extension are implemented and integrated into the OpenHEVC decoder. We show the first end-to-end video streaming demonstration of the HEVC extensions with the OpenHEVC decoder and the GPAC player. The GPAC server streams one HEVC base layer and two enhancement layers. At the client side, GPAC player uses the OpenHEVC to decode the base layer for HD resolution and can also decode whether the first EL for 4K resolution or the second EL for 3-D rendering.