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author | Jens Arnold <amiconn@rockbox.org> | 2007-08-24 21:03:19 +0000 |
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committer | Jens Arnold <amiconn@rockbox.org> | 2007-08-24 21:03:19 +0000 |
commit | 163d72ff1f680f81555c9cdd664fef8bde87df24 (patch) | |
tree | 4118146cc46ba7f71765c253a2155cf118a8bdb2 /apps | |
parent | 153d74443ae4f187fae0432346d0346bddfe46f3 (diff) | |
download | rockbox-163d72ff1f680f81555c9cdd664fef8bde87df24.tar.gz rockbox-163d72ff1f680f81555c9cdd664fef8bde87df24.zip |
iPod 1st..3rd Gen: Nearly halve the cost of software treble/bass (and eq) by putting the filter routine in IRAM.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14452 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps')
-rw-r--r-- | apps/eq_arm.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/apps/eq_arm.S b/apps/eq_arm.S index 0c1961d2d3..a18f93a6f8 100644 --- a/apps/eq_arm.S +++ b/apps/eq_arm.S | |||
@@ -17,6 +17,8 @@ | |||
17 | * | 17 | * |
18 | ****************************************************************************/ | 18 | ****************************************************************************/ |
19 | 19 | ||
20 | #include "config.h" | ||
21 | |||
20 | /* uncomment this to make filtering calculate lower bits after shifting. | 22 | /* uncomment this to make filtering calculate lower bits after shifting. |
21 | * without this, "shift" of the lower bits will be lost here. | 23 | * without this, "shift" of the lower bits will be lost here. |
22 | */ | 24 | */ |
@@ -26,7 +28,11 @@ | |||
26 | * void eq_filter(int32_t **x, struct eqfilter *f, unsigned num, | 28 | * void eq_filter(int32_t **x, struct eqfilter *f, unsigned num, |
27 | * unsigned channels, unsigned shift) | 29 | * unsigned channels, unsigned shift) |
28 | */ | 30 | */ |
31 | #if CONFIG_CPU == PP5002 | ||
32 | .section .icode,"ax",%progbits | ||
33 | #else | ||
29 | .text | 34 | .text |
35 | #endif | ||
30 | .global eq_filter | 36 | .global eq_filter |
31 | eq_filter: | 37 | eq_filter: |
32 | ldr r12, [sp] @ get shift parameter | 38 | ldr r12, [sp] @ get shift parameter |