1 files changed, 47 insertions, 0 deletions
diff --git a/libs/qm-dsp/ext/kissfft/tools/kiss_fftndr.h b/libs/qm-dsp/ext/kissfft/tools/kiss_fftndr.h
new file mode 100644
index 0000000000..38ec3ab023
--- /dev/null
+++ b/libs/qm-dsp/ext/kissfft/tools/kiss_fftndr.h
@@ -0,0 +1,47 @@
+#ifndef KISS_NDR_H
+#define KISS_NDR_H
+
+#include "kiss_fft.h"
+#include "kiss_fftr.h"
+#include "kiss_fftnd.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    
+typedef struct kiss_fftndr_state *kiss_fftndr_cfg;
+
+
+kiss_fftndr_cfg  kiss_fftndr_alloc(const int *dims,int ndims,int inverse_fft,void*mem,size_t*lenmem);
+/*
+ dims[0] must be even
+
+ If you don't care to allocate space, use mem = lenmem = NULL 
+*/
+
+
+void kiss_fftndr(
+        kiss_fftndr_cfg cfg,
+        const kiss_fft_scalar *timedata,
+        kiss_fft_cpx *freqdata);
+/*
+ input timedata has dims[0] X dims[1] X ... X  dims[ndims-1] scalar points
+ output freqdata has dims[0] X dims[1] X ... X  dims[ndims-1]/2+1 complex points
+*/
+
+void kiss_fftndri(
+        kiss_fftndr_cfg cfg,
+        const kiss_fft_cpx *freqdata,
+        kiss_fft_scalar *timedata);
+/*
+ input and output dimensions are the exact opposite of kiss_fftndr
+*/
+
+
+#define kiss_fftr_free free
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif