blob: b7d46b29c57560b92a47b46eff7a17ea3cff1805
| 1 | /* ***** BEGIN LICENSE BLOCK ***** |
| 2 | * Source last modified: $Id: memory_utils.c,v 1.1.1.1.2.1 2005/05/04 18:21:23 hubbe Exp $ |
| 3 | * |
| 4 | * REALNETWORKS CONFIDENTIAL--NOT FOR DISTRIBUTION IN SOURCE CODE FORM |
| 5 | * Portions Copyright (c) 1995-2005 RealNetworks, Inc. |
| 6 | * All Rights Reserved. |
| 7 | * |
| 8 | * The contents of this file, and the files included with this file, |
| 9 | * are subject to the current version of the Real Format Source Code |
| 10 | * Porting and Optimization License, available at |
| 11 | * https://helixcommunity.org/2005/license/realformatsource (unless |
| 12 | * RealNetworks otherwise expressly agrees in writing that you are |
| 13 | * subject to a different license). You may also obtain the license |
| 14 | * terms directly from RealNetworks. You may not use this file except |
| 15 | * in compliance with the Real Format Source Code Porting and |
| 16 | * Optimization License. There are no redistribution rights for the |
| 17 | * source code of this file. Please see the Real Format Source Code |
| 18 | * Porting and Optimization License for the rights, obligations and |
| 19 | * limitations governing use of the contents of the file. |
| 20 | * |
| 21 | * RealNetworks is the developer of the Original Code and owns the |
| 22 | * copyrights in the portions it created. |
| 23 | * |
| 24 | * This file, and the files included with this file, is distributed and |
| 25 | * made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL |
| 27 | * SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
| 28 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT |
| 29 | * OR NON-INFRINGEMENT. |
| 30 | * |
| 31 | * Technology Compatibility Kit Test Suite(s) Location: |
| 32 | * https://rarvcode-tck.helixcommunity.org |
| 33 | * |
| 34 | * Contributor(s): |
| 35 | * |
| 36 | * ***** END LICENSE BLOCK ***** */ |
| 37 | |
| 38 | #include <memory.h> |
| 39 | #include "../include/helix_types.h" |
| 40 | #include "../include/helix_result.h" |
| 41 | #include "../include/rm_memory.h" |
| 42 | #include "../include/memory_utils.h" |
| 43 | |
| 44 | HX_RESULT rm_enforce_buffer_min_size(void* pUserMem, |
| 45 | rm_malloc_func_ptr fpMalloc, |
| 46 | rm_free_func_ptr fpFree, |
| 47 | BYTE** ppBuf, |
| 48 | UINT32* pulCurLen, |
| 49 | UINT32 ulReqLen) |
| 50 | { |
| 51 | HX_RESULT retVal = HXR_OUTOFMEMORY; |
| 52 | |
| 53 | if (fpMalloc && fpFree && ppBuf && pulCurLen) { |
| 54 | if (ulReqLen > *pulCurLen) { |
| 55 | /* Allocate a new buffer */ |
| 56 | BYTE* pBuf = fpMalloc(pUserMem, ulReqLen); |
| 57 | if (pBuf) { |
| 58 | /* Was the old buffer allocated? */ |
| 59 | if (*ppBuf && *pulCurLen > 0) { |
| 60 | /* Copy the old buffer into the new one */ |
| 61 | memcpy(pBuf, *ppBuf, *pulCurLen); |
| 62 | /* Free the old buffer */ |
| 63 | fpFree(pUserMem, *ppBuf); |
| 64 | } |
| 65 | /* Assign the buffer out parameter */ |
| 66 | *ppBuf = pBuf; |
| 67 | /* Change the current size to the requested size */ |
| 68 | *pulCurLen = ulReqLen; |
| 69 | /* Clear the return value */ |
| 70 | retVal = HXR_OK; |
| 71 | } |
| 72 | } else { |
| 73 | /* Current buffer size is adequate - don't |
| 74 | * have to do anything here. |
| 75 | */ |
| 76 | retVal = HXR_OK; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | return retVal; |
| 81 | } |
| 82 | |
| 83 | BYTE* copy_buffer(void* pUserMem, |
| 84 | rm_malloc_func_ptr fpMalloc, |
| 85 | BYTE* pBuf, |
| 86 | UINT32 ulLen) |
| 87 | { |
| 88 | BYTE* pRet = HXNULL; |
| 89 | |
| 90 | if (fpMalloc && pBuf && ulLen) { |
| 91 | /* Allocate a buffer */ |
| 92 | pRet = (BYTE*) fpMalloc(pUserMem, ulLen); |
| 93 | if (pRet) { |
| 94 | /* Copy the buffer */ |
| 95 | memcpy(pRet, pBuf, ulLen); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | return pRet; |
| 100 | } |
| 101 |