1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1990-2001 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _MULTIMEDIA_AUDIOLIST_H 28 #define _MULTIMEDIA_AUDIOLIST_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <Audio.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 // This is the 'base' class for a list of extents of audio objects 39 class AudioList : public Audio { 40 41 // Define a linked list nested class 42 class AudioListEntry { 43 private: 44 void operator=(AudioListEntry); // Assignment is illegal 45 public: 46 Audio* aptr; // pointer to audio object 47 AudioListEntry* next; // pointer to next in list 48 AudioListEntry* prev; // pointer to previous 49 50 // Constructor w/obj 51 AudioListEntry( 52 Audio* obj); // referenced audio object 53 ~AudioListEntry(); // Destructor 54 55 void newptr(Audio* newa); // Reset extent 56 57 // Link in new extent 58 void link( 59 AudioListEntry* after); // link after this one 60 61 // Split an extent 62 void split( 63 Double pos); // split at offset 64 }; 65 66 private: 67 AudioListEntry head; // list head 68 69 AudioListEntry* first() const; // Return first extent 70 71 // Locate extent/offset 72 virtual Boolean getposition( 73 Double& pos, // target position (updated) 74 AudioListEntry*& ep) const; // returned entry pointer 75 76 AudioList operator=(AudioList); // Assignment is illegal 77 78 public: 79 AudioList(const char *name = "[list]"); // Constructor 80 virtual ~AudioList(); // Destructor 81 82 // class Audio methods specialized here 83 virtual Double GetLength() const; // Get length, in secs 84 virtual char *GetName() const; // Get name string 85 virtual AudioHdr GetHeader(); // Get header 86 virtual AudioHdr GetHeader(Double pos); // Get header at pos 87 88 // Read from position 89 virtual AudioError ReadData( 90 void* buf, // buffer to fill 91 size_t& len, // buffer length (updated) 92 Double& pos); // start position (updated) 93 94 // Write is prohibited 95 virtual AudioError WriteData( 96 void* buf, // buffer to copy 97 size_t& len, // buffer length (updated) 98 Double& pos); // start position (updated) 99 100 virtual Boolean isList() const { return (TRUE); } 101 102 // list manipulation methods 103 // Insert an entry 104 virtual AudioError Insert( 105 Audio* obj); // object to insert 106 107 // Insert an entry 108 virtual AudioError Insert( 109 Audio* obj, // object to insert 110 Double pos); // insertion offset, in seconds 111 112 // Append an entry 113 virtual AudioError Append( 114 Audio* obj); // object to append 115 116 // copy to another audio obj. 117 virtual AudioError AsyncCopy( 118 Audio* ap, // dest audio object 119 Double& frompos, 120 Double& topos, 121 Double& limit); 122 }; 123 124 #ifdef __cplusplus 125 } 126 #endif 127 128 #endif /* !_MULTIMEDIA_AUDIOLIST_H */ 129