From 2e5b1b1a9cab0ff19170815fda13f40268126027 Mon Sep 17 00:00:00 2001
From: Wincent Balin <wincent@rockbox.org>
Date: Thu, 3 Jun 2010 22:03:37 +0000
Subject: pdbox: Applied several changes by Buschel. Reintroduced compilation
 for iPods.

Changes by Buschel:

* Reduced footprint by making cosine table of size 1^13 instead of 1^15
* Corrected interpolation in the cos~ object
* Optimized multiplication on ARM platforms



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26534 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/pdbox/PDa/intern/cos~.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'apps/plugins/pdbox/PDa/intern/cos~.c')

diff --git a/apps/plugins/pdbox/PDa/intern/cos~.c b/apps/plugins/pdbox/PDa/intern/cos~.c
index 9e2d61f848..f787496c16 100644
--- a/apps/plugins/pdbox/PDa/intern/cos~.c
+++ b/apps/plugins/pdbox/PDa/intern/cos~.c
@@ -36,10 +36,20 @@ static t_int *cos_perform(t_int *w)
 	 phase = *in++;
 	 phase &= ((1<<fix1)-1);
 	 off =  fixtoi((long long)phase<<ILOGCOSTABSIZE);
-
+#ifdef ROCKBOX
+#ifdef NO_INTERPOLATION
+        *out = *(tab+off);
+#else /* NO_INTERPOLATION */
+        frac = phase & ((1<<(fix1-ILOGCOSTABSIZE))-1);
+        frac <<= ILOGCOSTABSIZE;
+        *out = mult(*(tab + off    ), (itofix(1) - frac)) + 
+               mult(*(tab + off + 1), frac);
+#endif /* NO_INTERPOLATION */
+#else /* ROCKBOX */
 	 frac = phase&(itofix(1)-1);
 	 *out = mult(*(tab + off),itofix(1) - frac) + 
 	      mult(*(tab + off + 1),frac);
+#endif /* ROCKBOX */
 	 out++;
     }
     return (w+4);
-- 
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