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| author | Sakitoshi | 2019-01-23 22:19:49 -0300 |
|---|---|---|
| committer | Sakitoshi | 2019-01-23 22:19:49 -0300 |
| commit | 636462080c6b984993d7427b5d7688a362e45c2f (patch) | |
| tree | 9bbff354dde1c84e1dcd73793104c9b66e6c1f12 /plugins/dfsound/xa.c | |
| parent | e424c297b7b714cf2f25582cf9b4fc30cba5599f (diff) | |
| download | pcsx_rearmed-636462080c6b984993d7427b5d7688a362e45c2f.tar.gz pcsx_rearmed-636462080c6b984993d7427b5d7688a362e45c2f.tar.bz2 pcsx_rearmed-636462080c6b984993d7427b5d7688a362e45c2f.zip | |
updated gaussian interpolation filter
the previous gaussian filter was pretty old and inaccurate, the new filter was taken from the updated peops sound plugin 1.10b.
Diffstat (limited to 'plugins/dfsound/xa.c')
| -rw-r--r-- | plugins/dfsound/xa.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/plugins/dfsound/xa.c b/plugins/dfsound/xa.c index ad7e824..bfebe3e 100644 --- a/plugins/dfsound/xa.c +++ b/plugins/dfsound/xa.c @@ -189,16 +189,16 @@ INLINE void FeedXA(xa_decode_t *xap) spos -= 0x10000L; } vl = (spos >> 6) & ~3; - vr=(gauss[vl]*gvall0)&~2047; - vr+=(gauss[vl+1]*gvall(1))&~2047; - vr+=(gauss[vl+2]*gvall(2))&~2047; - vr+=(gauss[vl+3]*gvall(3))&~2047; - l= (vr >> 11) & 0xffff; - vr=(gauss[vl]*gvalr0)&~2047; - vr+=(gauss[vl+1]*gvalr(1))&~2047; - vr+=(gauss[vl+2]*gvalr(2))&~2047; - vr+=(gauss[vl+3]*gvalr(3))&~2047; - l |= vr << 5; + vr=(gauss[vl]*gvall0) >> 15; + vr+=(gauss[vl+1]*gvall(1)) >> 15; + vr+=(gauss[vl+2]*gvall(2)) >> 15; + vr+=(gauss[vl+3]*gvall(3)) >> 15; + l= vr & 0xffff; + vr=(gauss[vl]*gvalr0) >> 15; + vr+=(gauss[vl+1]*gvalr(1)) >> 15; + vr+=(gauss[vl+2]*gvalr(2)) >> 15; + vr+=(gauss[vl+3]*gvalr(3)) >> 15; + l |= vr << 16; } else { @@ -246,16 +246,16 @@ INLINE void FeedXA(xa_decode_t *xap) spos -= 0x10000L; } vl = (spos >> 6) & ~3; - vr=(gauss[vl]*gvall0)&~2047; - vr+=(gauss[vl+1]*gvall(1))&~2047; - vr+=(gauss[vl+2]*gvall(2))&~2047; - vr+=(gauss[vl+3]*gvall(3))&~2047; - l= (vr >> 11) & 0xffff; - vr=(gauss[vl]*gvalr0)&~2047; - vr+=(gauss[vl+1]*gvalr(1))&~2047; - vr+=(gauss[vl+2]*gvalr(2))&~2047; - vr+=(gauss[vl+3]*gvalr(3))&~2047; - l |= vr << 5; + vr=(gauss[vl]*gvall0) >> 15; + vr+=(gauss[vl+1]*gvall(1)) >> 15; + vr+=(gauss[vl+2]*gvall(2)) >> 15; + vr+=(gauss[vl+3]*gvall(3)) >> 15; + l= vr & 0xffff; + vr=(gauss[vl]*gvalr0) >> 15; + vr+=(gauss[vl+1]*gvalr(1)) >> 15; + vr+=(gauss[vl+2]*gvalr(2)) >> 15; + vr+=(gauss[vl+3]*gvalr(3)) >> 15; + l |= vr << 16; } else { @@ -298,11 +298,11 @@ INLINE void FeedXA(xa_decode_t *xap) spos -= 0x10000L; } vl = (spos >> 6) & ~3; - vr=(gauss[vl]*gvall0)&~2047; - vr+=(gauss[vl+1]*gvall(1))&~2047; - vr+=(gauss[vl+2]*gvall(2))&~2047; - vr+=(gauss[vl+3]*gvall(3))&~2047; - l1=s= vr >> 11; + vr=(gauss[vl]*gvall0) >> 15; + vr+=(gauss[vl+1]*gvall(1)) >> 15; + vr+=(gauss[vl+2]*gvall(2)) >> 15; + vr+=(gauss[vl+3]*gvall(3)) >> 15; + l1=s= vr; l1 &= 0xffff; } else @@ -343,11 +343,11 @@ INLINE void FeedXA(xa_decode_t *xap) spos -= 0x10000L; } vl = (spos >> 6) & ~3; - vr=(gauss[vl]*gvall0)&~2047; - vr+=(gauss[vl+1]*gvall(1))&~2047; - vr+=(gauss[vl+2]*gvall(2))&~2047; - vr+=(gauss[vl+3]*gvall(3))&~2047; - l=s= vr >> 11; + vr=(gauss[vl]*gvall0) >> 15; + vr+=(gauss[vl+1]*gvall(1)) >> 15; + vr+=(gauss[vl+2]*gvall(2)) >> 15; + vr+=(gauss[vl+3]*gvall(3)) >> 15; + l=s= vr; } else { |