summaryrefslogtreecommitdiffstatshomepage
path: root/3rdparty/SDL2/src/test/SDL_test_crc32.c
diff options
context:
space:
mode:
Diffstat (limited to '3rdparty/SDL2/src/test/SDL_test_crc32.c')
-rw-r--r--3rdparty/SDL2/src/test/SDL_test_crc32.c165
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;
-}