Decoding system and method of context adaptive variable length codes

Abstract

Various embodiments of decoding systems and methods are disclosed. One system embodiment, among others, comprises a software programmable core processing unit having a context-adaptive variable length coding (CAVLC) unit configured to execute a shader, the shader configured to implement CAVLC decoding of a video stream and provide a decoded data output.

Description

technical field [0001] The invention relates to a decoding system and method. Background technique [0002] Computer graphics is an art and science that uses computers to generate images, images, or other graphics or image information. The current graphics system mostly includes several interfaces, such as Microsoft's Direct3D interface and OpenGL, etc., so that it can be used to execute specific operating systems (such as Microsoft's WINDOWS) computers control multimedia hardware such as graphics accelerators or graphics processing units (graphics processing unit, GPU). The generation of images and images is often called "rendering". The details are generally performed by a graphics accelerator. In three-dimensional (3D) computer graphics, the geometric shape of the object surface (or object) in the scene is converted into pixels (graphics units) and stored in the frame buffer. Then displayed on the display device, each object or object group has specific visual properties...

AI Technical Summary

Problems solved by technology

[0003] Computer graphics must meet consumers' requirements for controllability and features of games and other multimedia products, as well as produce more realistic images and improve processing speed and power consumption. Many standards have been developed to utilize less bits. For example, the H.264 standard (also known as the tenth part of the ISO Animation Experts Group MPEG-4) is a high-compression digital video coding standard. Compared with MPEG-2 compatible coding, H.264 .264 compatible encoding only needs about one-third of the number of bits to store video with the same video quality. Adaptive binary arithmetic coding (CABAC) and context-adaptive variable length coding (CAVLC), CAVLC is a content adaptive change of Huffman (Huffman) coding, which will change each Probability of an encoded symbol, CAVLC uses run-level encoding to compactly represent zero strings, using this method emits some high-frequency + / -1 coefficients concatenated with non-zero coefficients of adjacent tiles, CAVLC , the second Hadamard transform that will adaptively encode the DC coefficients of the 4×4 transform at or below the slice layer), the current CAVLC decoding structure can meet some of the needs of consumers, but there are still limitations in the design

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