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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-02-04 06:08:26 +02:00
Christophe Gisquet 4a7af92cc8 sbrdsp: Unroll and use integer operations
This patch can be controversial, by assuming floats are IEEE-754 and
particular behaviour of the FPU will get in the way.
Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference).

sbr_qmf_pre_shuffle_c: 115 to 76
sbr_neg_odd_64_c: 84 to 55
sbr_qmf_post_shuffle_c: 112 to 83

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2013-05-03 18:23:30 +02:00
2013-04-05 18:55:11 +02:00
2013-04-27 10:51:28 +02:00
2013-04-05 18:55:11 +02:00
2013-04-05 18:55:11 +02:00
2013-01-06 16:23:12 +01:00

Libav README
------------

1) Documentation
----------------

* Read the documentation in the doc/ directory.

2) Licensing
------------

* See the LICENSE file.
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