blob: 386e0437ddc2a0e976afea5079b02ebd01d69835
| 1 | /* ***** BEGIN LICENSE BLOCK ***** |
| 2 | * Source last modified: $Id: stream_hdr_utils.c,v 1.1.1.1.2.1 2005/05/04 18:21:24 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 "helix_types.h" |
| 40 | #include "helix_result.h" |
| 41 | #include "rm_memory.h" |
| 42 | #include "pack_utils.h" |
| 43 | #include "memory_utils.h" |
| 44 | #include "stream_hdr_structs.h" |
| 45 | #include "stream_hdr_utils.h" |
| 46 | |
| 47 | HX_RESULT rm_unpack_rule_map(BYTE** ppBuf, |
| 48 | UINT32* pulLen, |
| 49 | rm_malloc_func_ptr fpMalloc, |
| 50 | rm_free_func_ptr fpFree, |
| 51 | void* pUserMem, |
| 52 | rm_rule_map* pMap) |
| 53 | { |
| 54 | HX_RESULT retVal = HXR_FAIL; |
| 55 | |
| 56 | if (ppBuf && pulLen && fpMalloc && fpFree && pMap && |
| 57 | *ppBuf && *pulLen >= 2) { |
| 58 | /* Initialize local variables */ |
| 59 | UINT32 ulSize = 0; |
| 60 | UINT32 i = 0; |
| 61 | /* Clean up any existing rule to flag map */ |
| 62 | rm_cleanup_rule_map(fpFree, pUserMem, pMap); |
| 63 | /* Unpack the number of rules */ |
| 64 | pMap->ulNumRules = rm_unpack16(ppBuf, pulLen); |
| 65 | if (pMap->ulNumRules && *pulLen >= pMap->ulNumRules * 2) { |
| 66 | /* Allocate the map array */ |
| 67 | ulSize = pMap->ulNumRules * sizeof(UINT32); |
| 68 | pMap->pulMap = (UINT32*) fpMalloc(pUserMem, ulSize); |
| 69 | if (pMap->pulMap) { |
| 70 | /* Zero out the memory */ |
| 71 | memset(pMap->pulMap, 0, ulSize); |
| 72 | /* Unpack each of the flags */ |
| 73 | for (i = 0; i < pMap->ulNumRules; i++) { |
| 74 | pMap->pulMap[i] = rm_unpack16(ppBuf, pulLen); |
| 75 | } |
| 76 | /* Clear the return value */ |
| 77 | retVal = HXR_OK; |
| 78 | } |
| 79 | } else { |
| 80 | /* No rules - not an error */ |
| 81 | retVal = HXR_OK; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return retVal; |
| 86 | } |
| 87 | |
| 88 | void rm_cleanup_rule_map(rm_free_func_ptr fpFree, |
| 89 | void* pUserMem, |
| 90 | rm_rule_map* pMap) |
| 91 | { |
| 92 | if (fpFree && pMap && pMap->pulMap) { |
| 93 | fpFree(pUserMem, pMap->pulMap); |
| 94 | pMap->pulMap = HXNULL; |
| 95 | pMap->ulNumRules = 0; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | HX_RESULT rm_unpack_multistream_hdr(BYTE** ppBuf, |
| 100 | UINT32* pulLen, |
| 101 | rm_malloc_func_ptr fpMalloc, |
| 102 | rm_free_func_ptr fpFree, |
| 103 | void* pUserMem, |
| 104 | rm_multistream_hdr* hdr) |
| 105 | { |
| 106 | HX_RESULT retVal = HXR_FAIL; |
| 107 | |
| 108 | if (ppBuf && pulLen && fpMalloc && fpFree && hdr && |
| 109 | *ppBuf && *pulLen >= 4) { |
| 110 | /* Unpack the multistream members */ |
| 111 | hdr->ulID = rm_unpack32(ppBuf, pulLen); |
| 112 | /* Unpack the rule to substream map */ |
| 113 | retVal = rm_unpack_rule_map(ppBuf, pulLen, |
| 114 | fpMalloc, fpFree, pUserMem, |
| 115 | &hdr->rule2SubStream); |
| 116 | if (retVal == HXR_OK) { |
| 117 | if (*pulLen >= 2) { |
| 118 | /* Unpack the number of substreams */ |
| 119 | hdr->ulNumSubStreams = rm_unpack16(ppBuf, pulLen); |
| 120 | } else { |
| 121 | retVal = HXR_FAIL; |
| 122 | } |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | return retVal; |
| 127 | } |
| 128 | |
| 129 | void rm_cleanup_multistream_hdr(rm_free_func_ptr fpFree, |
| 130 | void* pUserMem, |
| 131 | rm_multistream_hdr* hdr) |
| 132 | { |
| 133 | if (hdr) { |
| 134 | rm_cleanup_rule_map(fpFree, pUserMem, &hdr->rule2SubStream); |
| 135 | } |
| 136 | } |
| 137 |