76e182323e
* New PowerPC fixed-point assembly courtesy of David Blythe. * Reorganized fixed-point assembly routines for easier maintenance and better performance. * Improved performance of subband synthesis through better indexing and fewer local variables. * Added alias reduction for the lower two subbands of mixed short blocks, per a report of ambiguity with ISO/IEC 11172-3 and for uniformity with most other implementations. Also improved alias reduction performance using multiply/accumulate. * Added --enable-strict-iso option to `configure' to override best accepted practices such as the alias reduction for mixed short blocks. * Improved performance of Layer III IMDCT by using longer multiply/accumulate runs where possible. |
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