search for: r14811

...ero, and as a result, a single-entry codebook is inherently malformed because it is underpopulated. The original specification did not address directly the matter of single-entry codebooks; they were implicitly illegal as it was not possible to write such a codebook with a valid tree structure. In r14811 of the libvorbis reference implementation, Xiph added an additional check to the codebook implementation to reject underpopulated Huffman trees. This change led to the discovery of single-entry books used ?in the wild? when the new, stricter checks rejected a number of apparently working streams....