xref: /illumos-gate/usr/src/cmd/audio/include/AudioTypePcm.h (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)
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_AUDIOTYPEPCM_H
28 #define	_MULTIMEDIA_AUDIOTYPEPCM_H
29 
30 #include <AudioTypeConvert.h>
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 // This is the class for a linear PCM conversion module
37 
38 class AudioTypePcm : public AudioTypeConvert {
39 protected:
40 	typedef unsigned char	ulaw;
41 	typedef unsigned char	alaw;
42 
43 	// Conversion routines inline'd in the source file
44 	double char2dbl(char);
45 	double short2dbl(short);
46 	double long2dbl(long);
47 	long dbl2long(double, long);
48 
49 	void char2short(char *&, short *&);
50 	void char2long(char *&, long *&);
51 	void char2float(char *&, float *&);
52 	void char2double(char *&, double *&);
53 	void char2ulaw(char *&, ulaw *&);
54 	void char2alaw(char *&, alaw *&);
55 
56 	void short2char(short *&, char *&);
57 	void short2long(short *&, long *&);
58 	void short2float(short *&, float *&);
59 	void short2double(short *&, double *&);
60 	void short2ulaw(short *&, ulaw *&);
61 	void short2alaw(short *&, alaw *&);
62 
63 	void long2char(long *&, char *&);
64 	void long2short(long *&, short *&);
65 	void long2float(long *&, float *&);
66 	void long2double(long *&, double *&);
67 	void long2ulaw(long *&, ulaw *&);
68 	void long2alaw(long *&, alaw *&);
69 
70 	void float2char(float *&, char *&);
71 	void float2short(float *&, short *&);
72 	void float2long(float *&, long *&);
73 	void float2double(float *&, double *&);
74 	void float2ulaw(float *&, ulaw *&);
75 	void float2alaw(float *&, alaw *&);
76 
77 	void double2char(double *&, char *&);
78 	void double2short(double *&, short *&);
79 	void double2long(double *&, long *&);
80 	void double2float(double *&, float *&);
81 	void double2ulaw(double *&, ulaw *&);
82 	void double2alaw(double *&, alaw *&);
83 
84 	void ulaw2char(ulaw *&, char *&);
85 	void ulaw2short(ulaw*&, short *&);
86 	void ulaw2long(ulaw*&, long *&);
87 	void ulaw2float(ulaw *&, float *&);
88 	void ulaw2double(ulaw *&, double *&);
89 	void ulaw2alaw(ulaw *&, alaw *&);
90 
91 	void alaw2ulaw(alaw *&, ulaw *&);
92 	void alaw2char(alaw *&, char *&);
93 	void alaw2short(alaw *&, short *&);
94 	void alaw2long(alaw *&, long *&);
95 	void alaw2float(alaw *&, float *&);
96 	void alaw2double(alaw *&, double *&);
97 
98 public:
99 	AudioTypePcm();					// Constructor
100 
101 	// Class AudioTypeConvert methods specialized here
102 
103 	// TRUE if conversion ok
104 	virtual Boolean CanConvert(
105 	    AudioHdr h) const;			// type to check against
106 
107 	// Convert buffer to the specified type
108 	// Either the input or output type must be handled by this class
109 
110 	// Convert to new type
111 	virtual AudioError Convert(
112 	    AudioBuffer*& inbuf,		// data buffer to process
113 	    AudioHdr outhdr);			// target header
114 
115 	virtual AudioError Flush(AudioBuffer*& buf);
116 };
117 
118 #ifdef __cplusplus
119 }
120 #endif
121 
122 #endif /* !_MULTIMEDIA_AUDIOTYPEPCM_H */
123