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authorMax Kellermann <max@duempel.org>2009-02-18 22:27:58 +0100
committerMax Kellermann <max@duempel.org>2009-02-18 22:27:58 +0100
commit7f701744a7aa65ff4c123c293791670ae0d6b8c4 (patch)
tree1d0f616a3fb4bc89714dc0c1fea0ef13578a8d2f /configure.ac
parent76dc9ac5f9437268bc167bc681168ef2c1f7420b (diff)
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pcm_volume: optimized pcm_volume_change_24() on i386
Added an inline assembly function for the 64 bit multiplication. Benchmark results on a Pentium II 266 MHz, 512 MB of 24 bit PCM data: dd if=/dev/zero bs=64k count=8k | time ./test/software_volume 48000:24:2 >/dev/null Before this patch 22.94s, after this patch 7.24s.
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