Work on custom Android build

- Renamed some folders
- Added some files for testing
- Removed useless files

templates/android_project/src/utils.h

@@ -0,0 +1,79 @@
+/**********************************************************************************************
+*
+*   raylib.utils - Some common utility functions
+*
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2014-2017 Ramon Santamaria (@raysan5)
+*
+*   This software is provided "as-is", without any express or implied warranty. In no event
+*   will the authors be held liable for any damages arising from the use of this software.
+*
+*   Permission is granted to anyone to use this software for any purpose, including commercial
+*   applications, and to alter it and redistribute it freely, subject to the following restrictions:
+*
+*     1. The origin of this software must not be misrepresented; you must not claim that you
+*     wrote the original software. If you use this software in a product, an acknowledgment
+*     in the product documentation would be appreciated but is not required.
+*
+*     2. Altered source versions must be plainly marked as such, and must not be misrepresented
+*     as being the original software.
+*
+*     3. This notice may not be removed or altered from any source distribution.
+*
+**********************************************************************************************/
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#if defined(PLATFORM_ANDROID)
+    #include <stdio.h>                      // Required for: FILE
+    #include <android/asset_manager.h>      // Required for: AAssetManager
+#endif
+
+//#include "rres.h"
+
+#define SUPPORT_SAVE_PNG
+
+//----------------------------------------------------------------------------------
+// Some basic Defines
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_ANDROID)
+    #define fopen(name, mode) android_fopen(name, mode) 
+#endif
+
+//----------------------------------------------------------------------------------
+// Types and Structures Definition
+//----------------------------------------------------------------------------------
+#ifdef __cplusplus
+extern "C" {            // Prevents name mangling of functions
+#endif
+
+//----------------------------------------------------------------------------------
+// Global Variables Definition
+//----------------------------------------------------------------------------------
+// Nop...
+
+//----------------------------------------------------------------------------------
+// Module Functions Declaration
+//----------------------------------------------------------------------------------
+#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI)
+#if defined(SUPPORT_SAVE_BMP)
+void SaveBMP(const char *fileName, unsigned char *imgData, int width, int height, int compSize);
+#endif
+#if defined(SUPPORT_SAVE_PNG)
+void SavePNG(const char *fileName, unsigned char *imgData, int width, int height, int compSize);
+#endif
+#endif
+
+#if defined(PLATFORM_ANDROID)
+void InitAssetManager(AAssetManager *manager);  // Initialize asset manager from android app
+FILE *android_fopen(const char *fileName, const char *mode);    // Replacement for fopen()
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // UTILS_H