diff options
Diffstat (limited to '3rdparty/SDL2/src/test/SDL_test_crc32.c')
-rw-r--r-- | 3rdparty/SDL2/src/test/SDL_test_crc32.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/3rdparty/SDL2/src/test/SDL_test_crc32.c b/3rdparty/SDL2/src/test/SDL_test_crc32.c deleted file mode 100644 index 6e1220881dd..00000000000 --- a/3rdparty/SDL2/src/test/SDL_test_crc32.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2016 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. -*/ - -/* - - Used by the test execution component. - Original source code contributed by A. Schiffler for GSOC project. - -*/ - -#include "SDL_config.h" - -#include "SDL_test.h" - - -int SDLTest_Crc32Init(SDLTest_Crc32Context *crcContext) -{ - int i,j; - CrcUint32 c; - - /* Sanity check context pointer */ - if (crcContext==NULL) { - return -1; - } - - /* - * Build auxiliary table for parallel byte-at-a-time CRC-32 - */ -#ifdef ORIGINAL_METHOD - for (i = 0; i < 256; ++i) { - for (c = i << 24, j = 8; j > 0; --j) { - c = c & 0x80000000 ? (c << 1) ^ CRC32_POLY : (c << 1); - } - crcContext->crc32_table[i] = c; - } -#else - for (i=0; i<256; i++) { - c = i; - for (j=8; j>0; j--) { - if (c & 1) { - c = (c >> 1) ^ CRC32_POLY; - } else { - c >>= 1; - } - } - crcContext->crc32_table[i] = c; - } -#endif - - return 0; -} - -/* Complete CRC32 calculation on a memory block */ - -int SDLTest_Crc32Calc(SDLTest_Crc32Context * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32) -{ - if (SDLTest_Crc32CalcStart(crcContext,crc32)) { - return -1; - } - - if (SDLTest_Crc32CalcBuffer(crcContext, inBuf, inLen, crc32)) { - return -1; - } - - if (SDLTest_Crc32CalcEnd(crcContext, crc32)) { - return -1; - } - - return 0; -} - -/* Start crc calculation */ - -int SDLTest_Crc32CalcStart(SDLTest_Crc32Context * crcContext, CrcUint32 *crc32) -{ - /* Sanity check pointers */ - if (crcContext==NULL) { - *crc32=0; - return -1; - } - - /* - * Preload shift register, per CRC-32 spec - */ - *crc32 = 0xffffffff; - - return 0; -} - -/* Finish crc calculation */ - -int SDLTest_Crc32CalcEnd(SDLTest_Crc32Context * crcContext, CrcUint32 *crc32) -{ - /* Sanity check pointers */ - if (crcContext==NULL) { - *crc32=0; - return -1; - } - - /* - * Return complement, per CRC-32 spec - */ - *crc32 = (~(*crc32)); - - return 0; -} - -/* Include memory block in crc */ - -int SDLTest_Crc32CalcBuffer(SDLTest_Crc32Context * crcContext, CrcUint8 *inBuf, CrcUint32 inLen, CrcUint32 *crc32) -{ - CrcUint8 *p; - register CrcUint32 crc; - - if (crcContext==NULL) { - *crc32=0; - return -1; - } - - if (inBuf==NULL) { - return -1; - } - - /* - * Calculate CRC from data - */ - crc = *crc32; - for (p = inBuf; inLen > 0; ++p, --inLen) { -#ifdef ORIGINAL_METHOD - crc = (crc << 8) ^ crcContext->crc32_table[(crc >> 24) ^ *p]; -#else - crc = ((crc >> 8) & 0x00FFFFFF) ^ crcContext->crc32_table[ (crc ^ *p) & 0xFF ]; -#endif - } - *crc32 = crc; - - return 0; -} - -int SDLTest_Crc32Done(SDLTest_Crc32Context * crcContext) -{ - if (crcContext==NULL) { - return -1; - } - - return 0; -} |