blob: 28aea79cd635e68fc2a48a636609e2e44dd4d778
| 1 | /* ***** BEGIN LICENSE BLOCK ***** |
| 2 | * Source last modified: $Id: buffers.c,v 1.2 2005/04/27 19:20:50 hubbe Exp $ |
| 3 | * |
| 4 | * REALNETWORKS CONFIDENTIAL--NOT FOR DISTRIBUTION IN SOURCE CODE FORM |
| 5 | * Portions Copyright (c) 1995-2002 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 | /************************************************************************************** |
| 39 | * Fixed-point RealAudio 8 decoder |
| 40 | * Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com) |
| 41 | * October 2003 |
| 42 | * |
| 43 | * buffers.c - allocation and freeing of internal RA8 decoder buffers |
| 44 | * |
| 45 | * All memory allocation for the codec is done in this file, so if you want |
| 46 | * to use something other the default malloc() and free() this is the only file |
| 47 | * you'll need to change. |
| 48 | **************************************************************************************/ |
| 49 | |
| 50 | //#include "includes.h" |
| 51 | #include <stdio.h> |
| 52 | #include <stdlib.h> |
| 53 | #include <string.h> |
| 54 | #include <fcntl.h> |
| 55 | #include "coder.h" |
| 56 | |
| 57 | /************************************************************************************** |
| 58 | * Function: ClearBuffer |
| 59 | * |
| 60 | * Description: fill buffer with 0's |
| 61 | * |
| 62 | * Inputs: pointer to buffer |
| 63 | * number of bytes to fill with 0 |
| 64 | * |
| 65 | * Outputs: cleared buffer |
| 66 | * |
| 67 | * Return: none |
| 68 | * |
| 69 | * Notes: slow, platform-independent equivalent to memset(buf, 0, nBytes) |
| 70 | **************************************************************************************/ |
| 71 | static void ClearBuffer(void *buf, int nBytes) |
| 72 | { |
| 73 | int i; |
| 74 | unsigned char *cbuf = (unsigned char *)buf; |
| 75 | |
| 76 | //for (i = 0; i < nBytes; i++) |
| 77 | // cbuf[i] = 0; |
| 78 | memset(cbuf, 0, nBytes); |
| 79 | return; |
| 80 | } |
| 81 | |
| 82 | /************************************************************************************** |
| 83 | * Function: AllocateBuffers |
| 84 | * |
| 85 | * Description: allocate all the memory needed for the RA8 decoder |
| 86 | * |
| 87 | * Inputs: none |
| 88 | * |
| 89 | * Outputs: none |
| 90 | * |
| 91 | * Return: pointer to Gecko2Info structure, set to all 0's |
| 92 | **************************************************************************************/ |
| 93 | Gecko2Info *AllocateBuffers(void) |
| 94 | { |
| 95 | Gecko2Info *gi; |
| 96 | |
| 97 | /* create new Gecko2Info structure */ |
| 98 | gi = (Gecko2Info *)malloc(sizeof(Gecko2Info)); |
| 99 | if (!gi) { |
| 100 | return 0; |
| 101 | } |
| 102 | ClearBuffer(gi, sizeof(Gecko2Info)); |
| 103 | |
| 104 | return gi; |
| 105 | } |
| 106 | |
| 107 | #define SAFE_FREE(x) {if (x) free(x); (x) = 0;} /* helper macro */ |
| 108 | |
| 109 | /************************************************************************************** |
| 110 | * Function: FreeBuffers |
| 111 | * |
| 112 | * Description: free all the memory used by the RA8 decoder |
| 113 | * |
| 114 | * Inputs: pointer to initialized Gecko2Info structure |
| 115 | * |
| 116 | * Outputs: none |
| 117 | * |
| 118 | * Return: none |
| 119 | **************************************************************************************/ |
| 120 | void FreeBuffers(Gecko2Info *gi) |
| 121 | { |
| 122 | if (!gi) { |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | SAFE_FREE(gi); |
| 127 | } |
| 128 |