Further work on extended Q range.
Fixed some further QIndex related issues and replaced some tables (eg zbin and rounding) Also Added function (currently disabled by default) to populate the main AC and DC quantizer tables. Using the original AC range the resulting computed DC values give behavior broadly comparable on the DERF set. That is not to say that the equations will hold good over a more extended range. The purpose of this code is to make it easier to experiment with further alterations to the Q range and distribution of Q values plus the relative weights given to AC and DC. The function find_fp_qindex() ensures that changes to the Q tables are reflected in the value passed in to the first pass code. Slight experimental adjustment to static segment Q offset. Change-Id: I36186267d55dfc2a3d565d0cff7218ef300d1cd5
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