search for: huffmantree

Hello ! A question to all 'Wheel-reinventers': I can build the huffmantrees by hand (on paper) but how to code it? Are there any good URLs out there? Or does the spec supply sufficient information? I tried figure out how oggdec (debugging) does this, but I couldn't get the clou. Thank you Dominik --- >8 ---- List archives: http://www.xiph.org/archives/...

hello all, we are developing and porting vorbis1decoder on a 24 bit platform. in the process we came across somedoubts about node bytes and leaf words. from the specification we got that we are arranging the huffman codeword tree into an array. the nodebytes are the number of bytes that are required to represent a node and leafwords are the no. of bytes required to represent the leaf i.e the

...a node and > leafwords are the no. of bytes required to represent the leaf > i.e the actual codeword. I'm not sure if I understand you correctly. Here's my interpretation: You get (extract) a list of codeword lengths. The indices of this list are the values that are to be coded by the huffmantree. Heres an example: let the codeword-length-list be: {1, 2, 3, 5, 4, 7, 5, 7 } This means: value 0 is encoded with 1 bit. value 1 is encoded with 2 bit. ..... value 5 is encoded with 7 bit. If you have 'dot' (graphviz) on your system you can generate a picture with the attached file: dot -T...

Hi, I am a bit confused on how code-words are derived from the codeword lengths. I will appreciate if someone can point me in the correct direction. I will take the example of an actual codebook that i found in a valid vorbis encoded file as shown below. [SK] +------Codebook [0] -------- [SK] Codebook Dimensions = 1 [SK] Codebook Entries = 8 [SK] Unordered [SK] 1, 6, 3, 7, 2, 5, 4, 7, [SK] NO