From d1ba8203832c54b4a98978c6033296183a24b4d0 Mon Sep 17 00:00:00 2001
From: Felix Domke <tmbinc@elitedvb.net>
Date: Mon, 26 Sep 2005 17:02:47 +0000
Subject: [PATCH]  - add SWIG_VOID, add tyemap_output_ptr

---
 lib/python/enigma_python.i | 12 ++++++++++++
 lib/python/swig.h          |  5 ++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/lib/python/enigma_python.i b/lib/python/enigma_python.i
index 3eb22d5..79f9296 100644
--- a/lib/python/enigma_python.i
+++ b/lib/python/enigma_python.i
@@ -83,6 +83,18 @@ extern PSignal1<void,int> &keyPressedSignal();
 %feature("ref")   iObject "$this->AddRef(); eDebug(\"AddRef (%s:%d)!\", __FILE__, __LINE__); "
 %feature("unref") iObject "$this->Release(); eDebug(\"Release! %s:%d\", __FILE__, __LINE__); "
 
+/* this magic allows smartpointer to be used as OUTPUT arguments, i.e. call-by-reference-styled return value. */
+
+%define %typemap_output_ptr(Type)
+ %typemap(in,numinputs=0) Type *OUTPUT ($*1_ltype temp),
+              Type &OUTPUT ($*1_ltype temp)
+   "$1 = new Type;";
+ %fragment("t_out_helper"{Type},"header",
+     fragment="t_output_helper") {}
+ %typemap(argout,fragment="t_out_helper"{Type}) Type *OUTPUT, Type &OUTPUT
+   "$result = t_output_helper($result, (SWIG_NewPointerObj((void*)($1), $1_descriptor, 1)));"
+%enddef
+
 %newobject eDebugClassPtr::operator->;
 
 #define DEBUG
diff --git a/lib/python/swig.h b/lib/python/swig.h
index b5cb77a..ae0bfd0 100644
--- a/lib/python/swig.h
+++ b/lib/python/swig.h
@@ -4,7 +4,8 @@
 #ifdef SWIG
 #define TEMPLATE_TYPEDEF(x, y) \
 %template(y) x; \
-typedef x y
+typedef x y; \
+%typemap_output_ptr(x);
 #else
 #define TEMPLATE_TYPEDEF(x, y) typedef x y
 #endif
@@ -12,9 +13,11 @@ typedef x y
 #ifdef SWIG
 #define SWIG_INPUT INPUT
 #define SWIG_OUTPUT OUTPUT
+#define SWIG_VOID(x) void
 #else
 #define SWIG_INPUT
 #define SWIG_OUTPUT
+#define SWIG_VOID(x) x
 #endif
 
 #endif
-- 
2.7.4