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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <AudioBuffer.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 // This is the abstract base class for an audio type conversion module 39 40 class AudioTypeConvert { 41 protected: 42 AudioHdr hdr; // contains type information 43 44 public: 45 AudioTypeConvert() {}; // Constructor 46 virtual ~AudioTypeConvert() {}; // Destructor 47 virtual AudioHdr DataType() const // Return type 48 { return (hdr); } 49 50 // class methods specialized by subclasses 51 52 // TRUE if conversion ok 53 virtual Boolean CanConvert( 54 AudioHdr h) const = 0; // type to check against 55 56 // Convert buffer to the specified type 57 // Either the input or output type must be handled by this class 58 59 // Convert to new type 60 virtual AudioError Convert( 61 AudioBuffer*& inbuf, // data buffer to process 62 AudioHdr outhdr) = 0; // target header 63 64 virtual AudioError Flush(AudioBuffer*& buf) = 0; // flush any remaining 65 // data that may exist 66 }; 67 68 #ifdef __cplusplus 69 } 70 #endif 71 72 #endif /* !_MULTIMEDIA_AUDIOTYPECONVERT_H */ 73