topic IPP's Huffman for compressing in Intel® Integrated Performance Primitives

IPP's Huffman for compressing

fernando_ftf — Mon, 14 Jun 2004 22:55:35 GMT

Hi,

I'm developing a program that uses huffman tree and I wouldlike touse the IPP's Huffmanto do it. I have readed the IPP manualbutcouldnt findany solution. Please, can anyone help meto use IPP's Huffmanfor general proposer (compressing)?

Thanks,

Fernando.

Re: IPP's Huffman for compressing

Vladimir_Dudnik — Tue, 15 Jun 2004 19:04:20 GMT

Hi,

huffman codec functions in ippAC library were designed for using in audio compression. If you need some general algorithm - please submit your request through technical support channels.

Regards,
Vladimir

Re: IPP's Huffman for compressing

Iliya_S_Intel — Wed, 16 Jun 2004 17:39:09 GMT

Acctualy, Primitivies were designed to be used in regular Huffman encoding too:
You can use the following functions to perfrom Huffman encoding:
ippsGetSizeHET_VLC_32s
ippsBuildHET_VLC_32s
ippsCountBits_1tuple_VLC_16s
ippsCountBits_2tuple_VLC_16s
ippsCountBits_4tuple_VLC_16s
ippsEncodeBlock_1tuple_VLC_16s
ippsEncodeBlock_2tuple_VLC_16s
ippsEncodeBlock_4tuple_VLC_16s

Please pay attantioon to Example 10-4, 10-6 in ipps manual to understand how these functions should be used.
For real example of usage you can investigate AAC encoder

Regards,

Iliya