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authorAndreas Eversberg <jolly@eversberg.eu>2017-05-13 16:04:00 +0200
committerAndreas Eversberg <jolly@eversberg.eu>2017-05-15 21:46:32 +0200
commitca10048e5caa77d8ed4c4902336f8ef88738a5e0 (patch)
treeb760e6bc3d44e187298e692bccfa6136812a40c5 /src/common/samplerate.c
parentd03443c4f158c537f071487d12ed9fca631539a7 (diff)
Rename filter -> iir_filter (file name and instance name)
This is useful when using fir_filter in the future.
Diffstat (limited to 'src/common/samplerate.c')
-rw-r--r--src/common/samplerate.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/common/samplerate.c b/src/common/samplerate.c
index 8187748..db6b278 100644
--- a/src/common/samplerate.c
+++ b/src/common/samplerate.c
@@ -25,7 +25,7 @@
#include "sample.h"
#include "samplerate.h"
-int init_samplerate(samplerate_t *state, double low_samplerate, double high_samplerate)
+int init_samplerate(samplerate_t *state, double low_samplerate, double high_samplerate, double filter_cutoff)
{
memset(state, 0, sizeof(*state));
state->factor = high_samplerate / low_samplerate;
@@ -34,8 +34,8 @@ int init_samplerate(samplerate_t *state, double low_samplerate, double high_samp
abort();
}
- filter_lowpass_init(&state->up.lp, 3300.0, high_samplerate, 2);
- filter_lowpass_init(&state->down.lp, 3300.0, high_samplerate, 2);
+ iir_lowpass_init(&state->up.lp, filter_cutoff, high_samplerate, 2);
+ iir_lowpass_init(&state->down.lp, filter_cutoff, high_samplerate, 2);
return 0;
}
@@ -49,7 +49,7 @@ int samplerate_downsample(samplerate_t *state, sample_t *samples, int input_num)
sample_t last_sample;
/* filter down */
- filter_process(&state->down.lp, samples, input_num);
+ iir_process(&state->down.lp, samples, input_num);
/* get last sample for interpolation */
last_sample = state->down.last_sample;
@@ -144,7 +144,7 @@ int samplerate_upsample(samplerate_t *state, sample_t *input, int input_num, sam
state->up.in_index = in_index;
/* filter up */
- filter_process(&state->up.lp, samples, output_num);
+ iir_process(&state->up.lp, samples, output_num);
if (input == output) {
/* copy samples */