initial git import

2016-03-01 18:40:38 +01:00
commit 946c9ce10a
84 changed files with 12959 additions and 0 deletions
--- a/src/common/samplerate.h
+++ b/src/common/samplerate.h
@@ -0,0 +1,18 @@
+#include "filter.h"
+
+typedef struct samplerate {
+	int factor;
+	struct {
+		double sum;
+		int sum_count;
+		biquad_low_pass_t bq;
+	} down;
+	struct {
+		double last_sample;
+		biquad_low_pass_t bq;
+	} up;
+} samplerate_t;
+
+int init_samplerate(samplerate_t *state, int samplerate);
+int samplerate_downsample(samplerate_t *state, int16_t *input, int input_num, int16_t *output);
+int samplerate_upsample(samplerate_t *state, int16_t *input, int input_num, int16_t *output);