hrydgard/ppsspp — pull request #4349 by xsacha (2013-10-28 13:56:27+00:00)
Title: sceAudio: ARM optimisation.

Use ARMv6+ assembly for the clamping and volume adjustment code.

Also note that when volume is 1<<15 that adjustvolume(sample, volume) becomes equal to sample. Every game I tested had left and right volume fixed to 1<<15 but it could just be a coincidence.