基于MMX/SSE/SSE2的H.264解码器关键算法优化

MMX/SSE/SSE2-based Optimization of the Key Algorithms of H.264 Decoder

摘要:

H．264采用整数离散余弦变换（Discrete Cosine Transform，DCT）、多种量化方法选择和更精确的帧内预测等先进技术，提高了解码图像质量，但增加了算法的计算复杂度。利用MMX／SSE／SSE2指令集对H．264解码器的关键算法进行优化，在不影响图像质量的情况下，实验证明可以显著提高算法的执行效率。

Abstract:

Many new technologies, including integral DCT, multiform quantization methods selection and precise intra-frame prediction, are adopted in H.264 to improve the image quality. However, this also increase the computation complexity. Using MMX/SSE/SSE2 to op