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Diffstat (limited to 'libvideoeditor/osal/src/M4OSA_Random.c')
-rwxr-xr-x | libvideoeditor/osal/src/M4OSA_Random.c | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/libvideoeditor/osal/src/M4OSA_Random.c b/libvideoeditor/osal/src/M4OSA_Random.c deleted file mode 100755 index c24d039..0000000 --- a/libvideoeditor/osal/src/M4OSA_Random.c +++ /dev/null @@ -1,90 +0,0 @@ -/* - * Copyright (C) 2011 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - ************************************************************************ - * @file M4PSW_Trace.c - * @brief Trace function for trace macros - * @note This file gives the implementation of the trace function used - * in the trace instrumentation macros - ************************************************************************ -*/ - -#include <stdio.h> /*for printf */ -#include <stdarg.h> /* ANSI C macros and defs for variable args */ -#include <stdlib.h> -#include <string.h> -#include <time.h> - -#include "M4OSA_Types.h" -#include "M4OSA_Error.h" -#include "M4OSA_Memory.h" -#include "M4OSA_Mutex.h" -/** - ************************************************************************ - * @fn M4OSA_ERR M4OSA_randInit() - * @brief this function initialize the number generator - * this function must be called once before any call to M4OSA_rand() - * need the stdlib and time libraries - * @note - * @param - * @return M4NO_ERROR - ************************************************************************ -*/ - -M4OSA_ERR M4OSA_randInit() -{ - int i; - - srand(time(NULL)); - - /* Windows' rand is rotten, the first generated value after the init - above is not random enough, so let's shake things a little... */ - - for (i=0; i<100; i++) rand(); - - return M4NO_ERROR; -} -/** - ************************************************************************ - * @fn M4OSA_ERR M4OSA_rand(M4OSA_Int32* out_value, M4OSA_UInt32 max_value) - * @brief This function gives a random number between 1 and max_value - * (inclusive) with approximately equal probability, and - * returns this number in out_value. For instance, a max_value - * of 6 will simulate a fair 6-sided dice roll. - * @note - * @param out_value (OUT): on return, points to random result - * @param max_value (IN): max expected value - * @return M4NO_ERROR - ************************************************************************ -*/ - -M4OSA_ERR M4OSA_rand(M4OSA_Int32* out_value, M4OSA_UInt32 max_value) -{ - if( (out_value == M4OSA_NULL) || (max_value < 1) ) - { - return M4ERR_PARAMETER; - } - - (*out_value) = rand(); - /* notice this algorithm will only work for max_values such that the multiplication - won't overflow, which means that max_value typically shouldn't go over the range of - an Int16. */ - (*out_value) = (((*out_value) * max_value) / ((M4OSA_UInt32)RAND_MAX + 1)) + 1; - - return M4NO_ERROR; -} - - |