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_AUDIOTYPECONVERT_H 28 #define _MULTIMEDIA_AUDIOTYPECONVERT_H 29 30 #include <AudioBuffer.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 // This is the abstract base class for an audio type conversion module 37 38 class AudioTypeConvert { 39 protected: 40 AudioHdr hdr; // contains type information 41 42 public: AudioTypeConvert()43 AudioTypeConvert() {}; // Constructor ~AudioTypeConvert()44 virtual ~AudioTypeConvert() {}; // Destructor DataType()45 virtual AudioHdr DataType() const // Return type 46 { return (hdr); } 47 48 // class methods specialized by subclasses 49 50 // TRUE if conversion ok 51 virtual Boolean CanConvert( 52 AudioHdr h) const = 0; // type to check against 53 54 // Convert buffer to the specified type 55 // Either the input or output type must be handled by this class 56 57 // Convert to new type 58 virtual AudioError Convert( 59 AudioBuffer*& inbuf, // data buffer to process 60 AudioHdr outhdr) = 0; // target header 61 62 virtual AudioError Flush(AudioBuffer*& buf) = 0; // flush any remaining 63 // data that may exist 64 }; 65 66 #ifdef __cplusplus 67 } 68 #endif 69 70 #endif /* !_MULTIMEDIA_AUDIOTYPECONVERT_H */ 71