First commit

- Method to get parameters of one harmonic

1 files changed, 24 insertions, 0 deletions

diff --git a/include/libgha.h b/include/libgha.h
new file mode 100644
index 0000000..3c5d123
--- /dev/null
+++ b/include/libgha.h
@@ -0,0 +1,24 @@
+#ifndef LIBGHA_H
+#define LIBGHA_h
+
+#define FLOAT float
+
+#include <stddef.h>
+
+typedef struct gha_ctx gha_ctx;
+
+struct gha_info {
+	FLOAT freq;
+	FLOAT phase;
+	FLOAT magnitude;
+};
+
+// size must be even
+gha_ctx* gha_create_ctx(size_t size);
+void gha_free_ctx(gha_ctx* ctx);
+
+// This function performs one GHA step for given PCM signal,
+// the result will be writen in to given gha_ingo structure
+void gha_analyze_one(const FLOAT* pcm, struct gha_info* info, gha_ctx* ctx);
+
+#endif