Extend system-info with information about OIIO, OCIO and OSL

Summary:
Version of those libraries might be useful to know.

- OIIO and OCIO is exposed via bpy.app.oiio and bpy.app.ocio.
  There're "supported", "version" and "version_string" defined
  in those modules.

- OSL is available as _cycles.osl_version and _cycles.osl_version_string.

Reviewers: campbellbarton

Reviewed By: campbellbarton

CC: dingto

Differential Revision: http://developer.blender.org/D79

1 files changed, 109 insertions, 0 deletions

diff --git a/source/blender/python/intern/bpy_app_ocio.c b/source/blender/python/intern/bpy_app_ocio.c
new file mode 100644
index 00000000000..dfcbfe94ead
--- /dev/null
+++ b/source/blender/python/intern/bpy_app_ocio.c
@@ -0,0 +1,109 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Sergey Sharybin
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/python/intern/bpy_app_ocio.c
+ *  \ingroup pythonintern
+ */
+
+#include <Python.h>
+#include "BLI_utildefines.h"
+
+#include "bpy_app_ocio.h"
+
+#ifdef WITH_OCIO
+#  include "ocio_capi.h"
+#endif
+
+static PyTypeObject BlenderAppOCIOType;
+
+static PyStructSequence_Field app_ocio_info_fields[] = {
+	{(char *)"supported", (char *)("Boolean, True when Blender is built with OpenColorIO support")},
+	{(char *)("version"), (char *)("The OpenColorIO version as a tuple of 3 numbers")},
+	{(char *)("version_string"), (char *)("The OpenColorIO version formatted as a string")},
+	{NULL}
+};
+
+static PyStructSequence_Desc app_ocio_info_desc = {
+	(char *)"bpy.app.ocio",     /* name */
+	(char *)"This module contains information about OpenColorIO blender is linked against",    /* doc */
+	app_ocio_info_fields,    /* fields */
+	(sizeof(app_ocio_info_fields) / sizeof(PyStructSequence_Field)) - 1
+};
+
+static PyObject *make_ocio_info(void)
+{
+	PyObject *ocio_info;
+	int pos = 0;
+
+#ifdef WITH_OCIO
+	int curversion;
+#endif
+
+	ocio_info = PyStructSequence_New(&BlenderAppOCIOType);
+	if (ocio_info == NULL) {
+		return NULL;
+	}
+
+#define SetStrItem(str) \
+	PyStructSequence_SET_ITEM(ocio_info, pos++, PyUnicode_FromString(str))
+#define SetObjItem(obj) \
+	PyStructSequence_SET_ITEM(ocio_info, pos++, obj)
+
+#ifdef WITH_OCIO
+	curversion = OCIO_getVersionHex();
+	SetObjItem(PyBool_FromLong(1));
+	SetObjItem(Py_BuildValue("(iii)",
+	                         curversion >> 24, (curversion >> 16) % 256, (curversion >> 8) % 256));
+	SetObjItem(PyUnicode_FromFormat("%2d, %2d, %2d",
+	                                curversion >> 24, (curversion >> 16) % 256, (curversion >> 8) % 256));
+#else
+	SetObjItem(PyBool_FromLong(0));
+	SetStrItem("Unknown");
+	SetStrItem("Unknown");
+#endif
+
+	if (PyErr_Occurred()) {
+		Py_CLEAR(ocio_info);
+		return NULL;
+	}
+
+#undef SetStrItem
+#undef SetObjItem
+
+	return ocio_info;
+}
+
+PyObject *BPY_app_ocio_struct(void)
+{
+	PyObject *ret;
+
+	PyStructSequence_InitType(&BlenderAppOCIOType, &app_ocio_info_desc);
+
+	ret = make_ocio_info();
+
+	/* prevent user from creating new instances */
+	BlenderAppOCIOType.tp_init = NULL;
+	BlenderAppOCIOType.tp_new = NULL;
+	BlenderAppOCIOType.tp_hash = (hashfunc)_Py_HashPointer; /* without this we can't do set(sys.modules) [#29635] */
+
+	return ret;
+}