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ARM DSP: fore some reason I neglected dsp_downsample completely. Do a small reordering.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25944 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2010-05-11 09:08:26 +00:00
parent ab4c86cbc6
commit 1e3eec2d3d
1 changed files with 3 additions and 3 deletions
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6
apps/dsp_arm.S
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@ -368,10 +368,10 @@ dsp_downsample:
@ keep frac in lower bits to take advantage of multiplier early termination
and r9, r1, r12 @ frac = phase & 0xffff
smull r9, r14, r11, r9
add r10, r10, r14, lsl #16
add r10, r10, r9, lsr #16 @ r10 = out = s[pos - 1] + frac*diff
str r10, [r8], #4 @ *d++ = out
add r1, r1, r6 @ phase += delta
add r10, r10, r9, lsr #16 @ r10 = out = s[pos - 1] + frac*diff
add r10, r10, r14, lsl #16
str r10, [r8], #4 @ *d++ = out
mov r9, r1, lsr #16 @ pos = phase >> 16
cmp r9, r0 @ pos < count?
blt .dsloop @ yup, do more samples