Initial version

.gitignore

@@ -31,3 +31,9 @@
 # Debug files
 *.dSYM/
 *.su
+
+# CMake
+cmake-build-*/
+
+# IDE
+.idea/

CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.6)
+project(normalmap)
+
+set(CMAKE_C_STANDARD  11)
+set(CMAKE_CXX_STANDARD 11)
+
+include_directories(include)
+
+set(SOURCE_FILES
+        include/stb_image.h
+        src/main.c
+        src/stb_image.c
+        src/normalmap.c
+        include/normalmap.h include/stb_image_write.h src/stb_image_write.c)
+
+add_executable(normalmap ${SOURCE_FILES})

include/normalmap.h

@@ -0,0 +1,89 @@
+/*
+   Copyright (C) 2002-2008 Shawn Kirst <[email protected]>
+
+   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; see the file COPYING.  If not, write to
+   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+*/
+#ifndef NORMAL_MAP
+#define NORMAL_MAP
+
+#include <stdint.h>
+
+#define ENUM_EACH(PARAM) PARAM,
+#define STR_EACH(PARAM) #PARAM,
+#define STR_EACH_SEP_WS(PARAM) #PARAM " "
+
+#define EACH_FILTER_TYPE(DO) \
+    DO(FILTER_NONE) \
+    DO(FILTER_SOBEL_3x3) \
+    DO(FILTER_SOBEL_5x5) \
+    DO(FILTER_PREWITT_3x3) \
+    DO(FILTER_PREWITT_5x5) \
+    DO(FILTER_3x3) \
+    DO(FILTER_5x5) \
+    DO(FILTER_7x7) \
+    DO(FILTER_9x9) \
+    DO(MAX_FILTER_TYPE)
+#define FILTER_TYPE_COUNT (10)
+
+enum FILTER_TYPE { EACH_FILTER_TYPE(ENUM_EACH) };
+
+static char * FILTER_TYPE_NAMES[] = {
+        EACH_FILTER_TYPE(STR_EACH)
+};
+
+enum ALPHA_TYPE
+{
+    ALPHA_NONE, ALPHA_HEIGHT, ALPHA_INVERSE_HEIGHT, ALPHA_ZERO, ALPHA_ONE,
+    ALPHA_INVERT, ALPHA_MAP, MAX_ALPHA_TYPE
+};
+
+enum CONVERSION_TYPE
+{
+    CONVERT_NONE, CONVERT_BIASED_RGB, CONVERT_RED, CONVERT_GREEN,
+    CONVERT_BLUE, CONVERT_MAX_RGB, CONVERT_MIN_RGB, CONVERT_COLORSPACE,
+    CONVERT_NORMALIZE_ONLY, CONVERT_DUDV_TO_NORMAL, CONVERT_HEIGHTMAP,
+    CONVERT_KEY_RGB,
+    MAX_CONVERSION_TYPE
+};
+
+enum DUDV_TYPE
+{
+    DUDV_NONE, DUDV_8BIT_SIGNED, DUDV_8BIT_UNSIGNED, DUDV_16BIT_SIGNED,
+    DUDV_16BIT_UNSIGNED,
+    MAX_DUDV_TYPE
+};
+
+typedef struct
+{
+    int filter;
+    double minz;
+    double scale;
+    int wrap;
+    int height_source;
+    int alpha;
+    int conversion;
+    int dudv;
+    int xinvert;
+    int yinvert;
+    int swapRGB;
+    double contrast;
+    int32_t alphamap_id;
+} NormalmapVals;
+
+int32_t normalmap(uint8_t * img, uint8_t * nm_img, size_t dx, size_t dy, NormalmapVals nmapvals);
+
+
+#endif