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| author | Thom Johansen <thomj@rockbox.org> | 2007-02-26 00:58:07 +0000 |
|---|---|---|
| committer | Thom Johansen <thomj@rockbox.org> | 2007-02-26 00:58:07 +0000 |
| commit | deb69d280ddfa9ac0874683cca36ecd9fef1c7dc (patch) | |
| tree | 1035a8499f7e45556eca9c1d8c0b27d5756b6cc5 /apps | |
| parent | a7fabf0741c91fb0a2c28b2d8357bcc4630300af (diff) | |
| download | rockbox-deb69d280ddfa9ac0874683cca36ecd9fef1c7dc.zip rockbox-deb69d280ddfa9ac0874683cca36ecd9fef1c7dc.tar.gz rockbox-deb69d280ddfa9ac0874683cca36ecd9fef1c7dc.tar.bz2 rockbox-deb69d280ddfa9ac0874683cca36ecd9fef1c7dc.tar.xz | |
Wrap filter_bishelf_coefs with HAVE_SW_TONE_CONTROLS to not waste bytes on targets that don't use it.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12490 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps')
| -rw-r--r-- | apps/eq.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -147,6 +147,7 @@ void filter_shelf_coefs(unsigned long cutoff, long ad, long an, int32_t *c) c[2] = -DIV64(a1, a0, 31); } +#ifdef HAVE_SW_TONE_CONTROLS /** * Calculate second order section filter consisting of one low-shelf and one * high-shelf section. @@ -198,6 +199,7 @@ void filter_bishelf_coefs(unsigned long cutoff_low, unsigned long cutoff_high, *c++ = -FRACMUL_SHL(FRACMUL(a0, a3) + FRACMUL(a1, a2), rcp_a0, 5); *c++ = -FRACMUL_SHL(FRACMUL(a1, a3), rcp_a0, 5); } +#endif /* Coef calculation taken from Audio-EQ-Cookbook.txt by Robert Bristow-Johnson. * Slightly faster calculation can be done by deriving forms which use tan() |