From 43b19815fec253dc7e5538329f9fe1363f007b8a Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Thu, 3 Feb 2011 16:45:34 -0800
Subject: uhd: added io type and conversion for complex64 (its not really
 useful)

---
 host/lib/convert/convert_common.hpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'host/lib/convert/convert_common.hpp')

diff --git a/host/lib/convert/convert_common.hpp b/host/lib/convert/convert_common.hpp
index 1a653a56f..c6ba1fcf9 100644
--- a/host/lib/convert/convert_common.hpp
+++ b/host/lib/convert/convert_common.hpp
@@ -41,8 +41,10 @@
 /***********************************************************************
  * Typedefs
  **********************************************************************/
+typedef std::complex<double>         fc64_t;
 typedef std::complex<float>          fc32_t;
 typedef std::complex<boost::int16_t> sc16_t;
+typedef std::complex<boost::int8_t>  sc8_t;
 typedef boost::uint32_t              item32_t;
 
 /***********************************************************************
@@ -87,4 +89,27 @@ static UHD_INLINE fc32_t item32_to_fc32(item32_t item){
     );
 }
 
+/***********************************************************************
+ * Convert complex double buffer to items32 (no swap)
+ **********************************************************************/
+static const double shorts_per_double = double(32767);
+
+static UHD_INLINE item32_t fc64_to_item32(fc64_t num){
+    boost::uint16_t real = boost::int16_t(num.real()*shorts_per_double);
+    boost::uint16_t imag = boost::int16_t(num.imag()*shorts_per_double);
+    return (item32_t(real) << 16) | (item32_t(imag) << 0);
+}
+
+/***********************************************************************
+ * Convert items32 buffer to complex double
+ **********************************************************************/
+static const double doubles_per_short = double(1.0/shorts_per_double);
+
+static UHD_INLINE fc64_t item32_to_fc64(item32_t item){
+    return fc64_t(
+        float(boost::int16_t(item >> 16)*doubles_per_short),
+        float(boost::int16_t(item >> 0)*doubles_per_short)
+    );
+}
+
 #endif /* INCLUDED_LIBUHD_CONVERT_COMMON_HPP */
-- 
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