From a1e34e365b84d5a1c47dbcffa4141303533a55e7 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@ipe.fzk.de>
Date: Thu, 10 Mar 2011 17:31:54 +0100
Subject: Use SWIG for easy language binding creation

---
 src/CMakeLists.txt | 17 ++++++++++++++-
 src/uca-cam.h      | 23 ++++++++++++++------
 src/uca.h          | 62 ++++++++++++++++++++++++++++++------------------------
 src/uca.i          |  8 +++++++
 4 files changed, 75 insertions(+), 35 deletions(-)
 create mode 100644 src/uca.i

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3ae6394..7a69ed4 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -33,8 +33,12 @@ find_package(IPE)
 find_package(FgLib5)
 find_package(ClSerMe4)
 
-# --- Add sources if camera/framegrabber access sources are available ---------
+# --- Miscellanous packages
+find_package(SWIG)
+find_package(PythonLibs)
+
 
+# --- Add sources if camera/framegrabber access sources are available ---------
 if (PF_FOUND)
     set(HAVE_PHOTON_FOCUS TRUE)
 
@@ -112,11 +116,22 @@ if(CLSERME4_FOUND AND FGLIB5_FOUND)
         )
 endif()
 
+# --- Configure step
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
     ${CMAKE_CURRENT_BINARY_DIR}/config.h)
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
+# --- Build language bindings via SWIG
+if(SWIG_FOUND AND PYTHONLIBS_FOUND)
+    include(${SWIG_USE_FILE})
+    include_directories(${PYTHON_INCLUDE_DIR})
+    set(CMAKE_SWIG_FLAGS "")
+
+    set_source_files_properties(uca.i PROPERTIES CPLUSPLUS ON)
+    SWIG_ADD_MODULE(uca python uca.i ${uca_SRCS})
+    SWIG_LINK_LIBRARIES(uca ${PYTHON_LIBRARIES} ${uca_LIBS})
+endif()
 
 # --- Build target ------------------------------------------------------------
 add_definitions("-std=c99 -Wall")
diff --git a/src/uca-cam.h b/src/uca-cam.h
index a7f1827..367b7ab 100644
--- a/src/uca-cam.h
+++ b/src/uca-cam.h
@@ -3,12 +3,24 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 struct uca_camera_t;
 struct uca_grabber_t;
 struct uca_property_t;
 
 enum uca_property_ids;
 
+enum uca_cam_state {
+    UCA_CAM_ERROR,
+    UCA_CAM_CONFIGURABLE,
+    UCA_CAM_ARMED,
+    UCA_CAM_RECORDING,
+};
+
+
 /*
  * --- non-virtual methods ----------------------------------------------------
  */
@@ -75,13 +87,6 @@ typedef uint32_t (*uca_cam_stop_recording) (struct uca_camera_t *cam);
 typedef uint32_t (*uca_cam_grab) (struct uca_camera_t *cam, char *buffer);
 
 
-enum uca_cam_state {
-    UCA_CAM_ERROR,
-    UCA_CAM_CONFIGURABLE,
-    UCA_CAM_ARMED,
-    UCA_CAM_RECORDING,
-};
-
 struct uca_camera_t {
     struct uca_camera_t     *next;
 
@@ -103,4 +108,8 @@ struct uca_camera_t {
     void *user; /**< private user data to be used by the camera driver */
 };
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
diff --git a/src/uca.h b/src/uca.h
index 30966c4..e206ad0 100644
--- a/src/uca.h
+++ b/src/uca.h
@@ -1,6 +1,10 @@
 #ifndef __UNIFIED_CAMERA_ACCESS_H
 #define __UNIFIED_CAMERA_ACCESS_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /**
  * \file uca.h
  * \brief Abstract camera model
@@ -15,33 +19,6 @@ struct uca_t;
 struct uca_camera_t;
 struct uca_property_t;
 
-/**
- * \brief Initialize the unified camera access interface
- * \return Pointer to a uca_t structure
- */
-struct uca_t *uca_init(void);
-
-/**
- * \brief Free resources of the unified camera access interface
- */
-void uca_destroy(struct uca_t *uca);
-
-/**
- * \brief Convert a property string to the corresponding ID
- */
-enum uca_property_ids uca_get_property_id(const char *property_name);
-
-/**
- * \brief Convert a property ID to the corresponding string 
- */
-const char* uca_get_property_name(enum uca_property_ids property_id);
-
-/**
- * \brief Return the full property structure for a given ID
- */
-struct uca_property_t *uca_get_full_property(enum uca_property_ids property_id);
-
-
 /* The property IDs must start with 0 and must be continuous. Whenever this
  * library is released, the IDs must not change to guarantee binary compatibility! */
 enum uca_property_ids {
@@ -86,6 +63,34 @@ enum uca_property_ids {
     UCA_PROP_LAST
 };
 
+/**
+ * \brief Initialize the unified camera access interface
+ * \return Pointer to a uca_t structure
+ */
+struct uca_t *uca_init(void);
+
+/**
+ * \brief Free resources of the unified camera access interface
+ */
+void uca_destroy(struct uca_t *uca);
+
+/**
+ * \brief Convert a property string to the corresponding ID
+ */
+enum uca_property_ids uca_get_property_id(const char *property_name);
+
+/**
+ * \brief Convert a property ID to the corresponding string 
+ */
+const char* uca_get_property_name(enum uca_property_ids property_id);
+
+/**
+ * \brief Return the full property structure for a given ID
+ */
+struct uca_property_t *uca_get_full_property(enum uca_property_ids property_id);
+
+
+
 /* Possible timestamp modes for UCA_PROP_TIMESTAMP_MODE */
 #define UCA_TIMESTAMP_ASCII     0x01
 #define UCA_TIMESTAMP_BINARY    0x02
@@ -158,5 +163,8 @@ struct uca_t {
     struct uca_grabber_t *grabbers;
 };
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif
diff --git a/src/uca.i b/src/uca.i
new file mode 100644
index 0000000..1846a46
--- /dev/null
+++ b/src/uca.i
@@ -0,0 +1,8 @@
+%module uca
+%{
+#include "uca.h"
+#include "uca-cam.h"
+%}
+
+%include "uca.h"
+%include "uca-cam.h"
-- 
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