1 files changed, 128 insertions, 0 deletions
diff --git a/src/SDL2/include/SDL_test_crc32.h b/src/SDL2/include/SDL_test_crc32.h
new file mode 100644
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+++ b/src/SDL2/include/SDL_test_crc32.h
@@ -0,0 +1,128 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
+
+  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.
+*/
+
+/**
+ *  \file SDL_test_crc32.h
+ *  
+ *  Include file for SDL test framework.
+ *
+ *  This code is a part of the SDL2_test library, not the main SDL library.
+ */
+
+/* 
+
+ Implements CRC32 calculations (default output is Perl String::CRC32 compatible).
+  
+*/
+
+#ifndef _SDL_test_crc32_h
+#define _SDL_test_crc32_h
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+extern "C" {
+/* *INDENT-ON* */
+#endif
+
+
+/* ------------ Definitions --------- */
+
+/* Definition shared by all CRC routines */
+
+#ifndef CrcUint32
+ #define CrcUint32	unsigned int
+#endif
+#ifndef CrcUint8
+ #define CrcUint8	unsigned char
+#endif
+
+#ifdef ORIGINAL_METHOD
+ #define CRC32_POLY 0x04c11db7 	 /* AUTODIN II, Ethernet, & FDDI */
+#else
+ #define CRC32_POLY 0xEDB88320   /* Perl String::CRC32 compatible */
+#endif
+
+/** 
+ * Data structure for CRC32 (checksum) computation 
+ */
+  typedef struct {
+    CrcUint32    crc32_table[256]; /* CRC table */
+  } SDLTest_Crc32Context;
+
+/* ---------- Function Prototypes ------------- */
+
+/** 
+ * /brief Initialize the CRC context
+ *
+ * Note: The function initializes the crc table required for all crc calculations.
+ *
+ * /param crcContext		pointer to context variable
+ *
+ * /returns 0 for OK, -1 on error
+ *
+ */
+ int SDLTest_Crc32Init(SDLTest_Crc32Context * crcContext);
+
+
+/**
+ * /brief calculate a crc32 from a data block
+ * 
+ * /param crcContext	     pointer to context variable
+ * /param inBuf              input buffer to checksum
+ * /param inLen              length of input buffer
+ * /param crc32              pointer to Uint32 to store the final CRC into
+ *
+ * /returns 0 for OK, -1 on error
+ *
+ */
+int SDLTest_crc32Calc(SDLTest_Crc32Context * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32);
+
+/* Same routine broken down into three steps */
+int SDLTest_Crc32CalcStart(SDLTest_Crc32Context * crcContext, CrcUint32 *crc32);
+int SDLTest_Crc32CalcEnd(SDLTest_Crc32Context * crcContext, CrcUint32 *crc32);
+int SDLTest_Crc32CalcBuffer(SDLTest_Crc32Context * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32);
+
+
+/**
+ * /brief clean up CRC context
+ *
+ * /param crcContext		pointer to context variable
+ *
+ * /returns 0 for OK, -1 on error
+ *
+*/
+
+int SDLTest_Crc32Done(SDLTest_Crc32Context * crcContext);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+/* *INDENT-OFF* */
+}
+/* *INDENT-ON* */
+#endif
+#include "close_code.h"
+
+#endif /* _SDL_test_crc32_h */
+
+/* vi: set ts=4 sw=4 expandtab: */