From 6acb09a85e5652af36acee3c48bffec7de27643d Mon Sep 17 00:00:00 2001
From: Ahmet Inan <xdsopl@googlemail.com>
Date: Sun, 30 Nov 2014 12:29:30 +0100
Subject: [PATCH] moved complex number helpers to complex.rsh

---
 app/src/main/rs/complex.rsh | 30 ++++++++++++++++++++++++++++++
 app/src/main/rs/decoder.rs  | 17 ++---------------
 2 files changed, 32 insertions(+), 15 deletions(-)
 create mode 100644 app/src/main/rs/complex.rsh

diff --git a/app/src/main/rs/complex.rsh b/app/src/main/rs/complex.rsh
new file mode 100644
index 0000000..1249e85
--- /dev/null
+++ b/app/src/main/rs/complex.rsh
@@ -0,0 +1,30 @@
+/*
+Copyright 2014 Ahmet Inan <xdsopl@googlemail.com>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+ */
+
+typedef float2 complex_t;
+static inline complex_t complex(float a, float b) { return (complex_t){ a, b }; }
+static inline float cabs(complex_t z) { return length(z); }
+static inline float carg(complex_t z) { return atan2(z[1], z[0]); }
+static inline complex_t cexp(complex_t z)
+{
+    return complex(exp(z[0]) * cos(z[1]), exp(z[0]) * sin(z[1]));
+}
+static inline complex_t cmul(complex_t a, complex_t b)
+{
+    return complex(a[0] * b[0] - a[1] * b[1], a[0] * b[1] + a[1] * b[0]);
+}
+static inline complex_t conj(complex_t z) { return complex(z[0], -z[1]); }
+static inline complex_t cdiv(complex_t a, complex_t b) { return cmul(a, conj(b)) / dot(b, b); }
diff --git a/app/src/main/rs/decoder.rs b/app/src/main/rs/decoder.rs
index 260c434..2f24821 100644
--- a/app/src/main/rs/decoder.rs
+++ b/app/src/main/rs/decoder.rs
@@ -17,27 +17,14 @@ limitations under the License.
 #pragma version(1)
 #pragma rs java_package_name(xdsopl.robot36)
 
+#include "complex.rsh"
+
 short *audio_buffer;
 uchar *value_buffer;
 uchar4 *pixel_buffer;
 
 static inline uchar4 rgb(uchar r, uchar g, uchar b) { return (uchar4){ b, g, r, 255 }; }
 
-typedef float2 complex_t;
-static inline complex_t complex(float a, float b) { return (complex_t){ a, b }; }
-static inline float cabs(complex_t z) { return length(z); }
-static inline float carg(complex_t z) { return atan2(z[1], z[0]); }
-static inline complex_t cexp(complex_t z)
-{
-    return complex(exp(z[0]) * cos(z[1]), exp(z[0]) * sin(z[1]));
-}
-static inline complex_t cmul(complex_t a, complex_t b)
-{
-    return complex(a[0] * b[0] - a[1] * b[1], a[0] * b[1] + a[1] * b[0]);
-}
-static inline complex_t conj(complex_t z) { return complex(z[0], -z[1]); }
-static inline complex_t cdiv(complex_t a, complex_t b) { return cmul(a, conj(b)) / dot(b, b); }
-
 static float ema_a(float cutoff, float rate, int order)
 {
     float fc = cutoff / sqrt(rootn(2.0f, order) - 1.0f);