mp4array.h
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上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:3k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (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.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is MPEG4IP.
- *
- * The Initial Developer of the Original Code is Cisco Systems Inc.
- * Portions created by Cisco Systems Inc. are
- * Copyright (C) Cisco Systems Inc. 2001. All Rights Reserved.
- *
- * Contributor(s):
- * Dave Mackie dmackie@cisco.com
- */
- #ifndef __MP4_ARRAY_INCLUDED__
- #define __MP4_ARRAY_INCLUDED__
- typedef u_int32_t MP4ArrayIndex;
- class MP4Array {
- public:
- MP4Array() {
- m_numElements = 0;
- m_maxNumElements = 0;
- }
- inline bool ValidIndex(MP4ArrayIndex index) {
- if (m_numElements == 0 || index > m_numElements - 1) {
- return false;
- }
- return true;
- }
- inline MP4ArrayIndex Size(void) {
- return m_numElements;
- }
- inline MP4ArrayIndex MaxSize(void) {
- return m_maxNumElements;
- }
- protected:
- MP4ArrayIndex m_numElements;
- MP4ArrayIndex m_maxNumElements;
- };
- // macro to generate subclasses
- // we use this as an alternative to templates
- // due to the excessive compile time price of extensive template usage
- #define MP4ARRAY_DECL(name, type)
- class name##Array : public MP4Array {
- public:
- name##Array() {
- m_elements = NULL;
- }
- ~name##Array() {
- MP4Free(m_elements);
- }
- inline void Add(type newElement) {
- Insert(newElement, m_numElements);
- }
- void Insert(type newElement, MP4ArrayIndex newIndex) {
- if (newIndex > m_numElements) {
- throw new MP4Error(ERANGE, "MP4Array::Insert");
- }
- if (m_numElements == m_maxNumElements) {
- m_maxNumElements = MAX(m_maxNumElements, 1) * 2;
- m_elements = (type*)MP4Realloc(m_elements,
- m_maxNumElements * sizeof(type));
- }
- memmove(&m_elements[newIndex + 1], &m_elements[newIndex],
- (m_numElements - newIndex) * sizeof(type));
- m_elements[newIndex] = newElement;
- m_numElements++;
- }
- void Delete(MP4ArrayIndex index) {
- if (!ValidIndex(index)) {
- throw new MP4Error(ERANGE, "MP4Array::Delete");
- }
- memmove(&m_elements[index], &m_elements[index + 1],
- (m_numElements - index) * sizeof(type));
- m_numElements--;
- }
- void Resize(MP4ArrayIndex newSize) {
- m_numElements = newSize;
- m_maxNumElements = newSize;
- m_elements = (type*)MP4Realloc(m_elements,
- m_maxNumElements * sizeof(type));
- }
- type& operator[](MP4ArrayIndex index) {
- if (!ValidIndex(index)) {
- throw new MP4Error(ERANGE, "MP4Array::[]");
- }
- return m_elements[index];
- }
- protected:
- type* m_elements;
- };
- MP4ARRAY_DECL(MP4Integer8, u_int8_t)
- MP4ARRAY_DECL(MP4Integer16, u_int16_t)
- MP4ARRAY_DECL(MP4Integer32, u_int32_t)
- MP4ARRAY_DECL(MP4Integer64, u_int64_t)
- MP4ARRAY_DECL(MP4Float32, float)
- MP4ARRAY_DECL(MP4Float64, double)
- MP4ARRAY_DECL(MP4String, char*)
- MP4ARRAY_DECL(MP4Bytes, u_int8_t*)
- #endif /* __MP4_ARRAY_INCLUDED__ */