Changed meaning of shift parameter to include the EMAC implicit shift

factor. ARM version is already fixed.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8520 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 3 insertions, 2 deletions

diff --git a/apps/eq.h b/apps/eq.h
index c4eb5f16c0..f29d765325 100644
--- a/apps/eq.h
+++ b/apps/eq.h
@@ -23,8 +23,8 @@
 /* These depend on the fixed point formats used by the different filter types
    and need to be changed when they change.
  */
-#define EQ_PEAK_SHIFT 3
-#define EQ_SHELF_SHIFT 7
+#define EQ_PEAK_SHIFT 4
+#define EQ_SHELF_SHIFT 8
 
 struct eqfilter {
     long coefs[5];        /* Order is b0, b1, b2, a1, a2 */
diff --git a/apps/eq_cf.S b/apps/eq_cf.S
index 0a34d7707e..f2440c2bdd 100644
--- a/apps/eq_cf.S
+++ b/apps/eq_cf.S
@@ -24,6 +24,7 @@ eq_filter:
     movem.l %d2-%d7/%a2-%a6, (%sp)    | save clobbered regs
     move.l (11*4+8, %sp), %a5         | fetch filter structure address
     movem.l (11*4+16, %sp), %d6-%d7   | load num. channels and shift count
+    subq.l #1, %d7                    | EMAC gives us one free shift
     movem.l (%a5), %a0-%a4            | load coefs
     lea.l (5*4, %a5), %a5             | point to filter history