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1/* Copyright: � Copyright 2005 Apple Computer, Inc. All rights reserved.
2
3 Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
4 ("Apple") in consideration of your agreement to the following terms, and your
5 use, installation, modification or redistribution of this Apple software
6 constitutes acceptance of these terms. If you do not agree with these terms,
7 please do not use, install, modify or redistribute this Apple software.
8
9 In consideration of your agreement to abide by the following terms, and subject
10 to these terms, Apple grants you a personal, non-exclusive license, under Apple�s
11 copyrights in this original Apple software (the "Apple Software"), to use,
12 reproduce, modify and redistribute the Apple Software, with or without
13 modifications, in source and/or binary forms; provided that if you redistribute
14 the Apple Software in its entirety and without modifications, you must retain
15 this notice and the following text and disclaimers in all such redistributions of
16 the Apple Software. Neither the name, trademarks, service marks or logos of
17 Apple Computer, Inc. may be used to endorse or promote products derived from the
18 Apple Software without specific prior written permission from Apple. Except as
19 expressly stated in this notice, no other rights or licenses, express or implied,
20 are granted by Apple herein, including but not limited to any patent rights that
21 may be infringed by your derivative works or by other works in which the Apple
22 Software may be incorporated.
23
24 The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
25 WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
26 WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
28 COMBINATION WITH YOUR PRODUCTS.
29
30 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
31 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
32 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
34 OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
35 (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
36 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37*/
38/*=============================================================================
39 CAChannelLayouts.cpp
40
41=============================================================================*/
42
43#include "CAChannelLayouts.h"
44#include <string.h>
45#include <stdio.h>
46
47struct LayoutTag {
48 UInt32 constant;
49 const char *name;
50};
51
52#define TAG(x) { x, #x },
53
54static LayoutTag gLayoutTags[] = {
55 TAG(kAudioChannelLayoutTag_Mono)
56 TAG(kAudioChannelLayoutTag_Stereo)
57 TAG(kAudioChannelLayoutTag_StereoHeadphones)
58 TAG(kAudioChannelLayoutTag_MatrixStereo)
59 TAG(kAudioChannelLayoutTag_MidSide)
60 TAG(kAudioChannelLayoutTag_XY)
61 TAG(kAudioChannelLayoutTag_Binaural)
62 TAG(kAudioChannelLayoutTag_Ambisonic_B_Format)
63 TAG(kAudioChannelLayoutTag_Quadraphonic)
64 TAG(kAudioChannelLayoutTag_Pentagonal)
65 TAG(kAudioChannelLayoutTag_Hexagonal)
66 TAG(kAudioChannelLayoutTag_Octagonal)
67 TAG(kAudioChannelLayoutTag_Cube)
68 TAG(kAudioChannelLayoutTag_MPEG_1_0)
69 TAG(kAudioChannelLayoutTag_MPEG_2_0)
70 TAG(kAudioChannelLayoutTag_MPEG_3_0_A)
71 TAG(kAudioChannelLayoutTag_MPEG_3_0_B)
72 TAG(kAudioChannelLayoutTag_MPEG_4_0_A)
73 TAG(kAudioChannelLayoutTag_MPEG_4_0_B)
74 TAG(kAudioChannelLayoutTag_MPEG_5_0_A)
75 TAG(kAudioChannelLayoutTag_MPEG_5_0_B)
76 TAG(kAudioChannelLayoutTag_MPEG_5_0_C)
77 TAG(kAudioChannelLayoutTag_MPEG_5_0_D)
78 TAG(kAudioChannelLayoutTag_MPEG_5_1_A)
79 TAG(kAudioChannelLayoutTag_MPEG_5_1_B)
80 TAG(kAudioChannelLayoutTag_MPEG_5_1_C)
81 TAG(kAudioChannelLayoutTag_MPEG_5_1_D)
82 TAG(kAudioChannelLayoutTag_MPEG_6_1_A)
83 TAG(kAudioChannelLayoutTag_MPEG_7_1_A)
84 TAG(kAudioChannelLayoutTag_MPEG_7_1_B)
85 TAG(kAudioChannelLayoutTag_MPEG_7_1_C)
86 TAG(kAudioChannelLayoutTag_Emagic_Default_7_1)
87 TAG(kAudioChannelLayoutTag_SMPTE_DTV)
88 TAG(kAudioChannelLayoutTag_ITU_1_0)
89 TAG(kAudioChannelLayoutTag_ITU_2_0)
90 TAG(kAudioChannelLayoutTag_ITU_2_1)
91 TAG(kAudioChannelLayoutTag_ITU_2_2)
92 TAG(kAudioChannelLayoutTag_ITU_3_0)
93 TAG(kAudioChannelLayoutTag_ITU_3_1)
94 TAG(kAudioChannelLayoutTag_ITU_3_2)
95 TAG(kAudioChannelLayoutTag_ITU_3_2_1)
96 TAG(kAudioChannelLayoutTag_ITU_3_4_1)
97 TAG(kAudioChannelLayoutTag_DVD_0)
98 TAG(kAudioChannelLayoutTag_DVD_1)
99 TAG(kAudioChannelLayoutTag_DVD_2)
100 TAG(kAudioChannelLayoutTag_DVD_3)
101 TAG(kAudioChannelLayoutTag_DVD_4)
102 TAG(kAudioChannelLayoutTag_DVD_5)
103 TAG(kAudioChannelLayoutTag_DVD_6)
104 TAG(kAudioChannelLayoutTag_DVD_7)
105 TAG(kAudioChannelLayoutTag_DVD_8)
106 TAG(kAudioChannelLayoutTag_DVD_9)
107 TAG(kAudioChannelLayoutTag_DVD_10)
108 TAG(kAudioChannelLayoutTag_DVD_11)
109 TAG(kAudioChannelLayoutTag_DVD_12)
110 TAG(kAudioChannelLayoutTag_DVD_13)
111 TAG(kAudioChannelLayoutTag_DVD_14)
112 TAG(kAudioChannelLayoutTag_DVD_15)
113 TAG(kAudioChannelLayoutTag_DVD_16)
114 TAG(kAudioChannelLayoutTag_DVD_17)
115 TAG(kAudioChannelLayoutTag_DVD_18)
116 TAG(kAudioChannelLayoutTag_DVD_19)
117 TAG(kAudioChannelLayoutTag_DVD_20)
118 TAG(kAudioChannelLayoutTag_AudioUnit_4)
119 TAG(kAudioChannelLayoutTag_AudioUnit_5)
120 TAG(kAudioChannelLayoutTag_AudioUnit_6)
121 TAG(kAudioChannelLayoutTag_AudioUnit_8)
122 TAG(kAudioChannelLayoutTag_AudioUnit_5_0)
123 TAG(kAudioChannelLayoutTag_AudioUnit_6_0)
124 TAG(kAudioChannelLayoutTag_AudioUnit_7_0)
125 TAG(kAudioChannelLayoutTag_AudioUnit_5_1)
126 TAG(kAudioChannelLayoutTag_AudioUnit_6_1)
127 TAG(kAudioChannelLayoutTag_AudioUnit_7_1)
128 TAG(kAudioChannelLayoutTag_AAC_Quadraphonic)
129 TAG(kAudioChannelLayoutTag_AAC_4_0)
130 TAG(kAudioChannelLayoutTag_AAC_5_0)
131 TAG(kAudioChannelLayoutTag_AAC_5_1)
132 TAG(kAudioChannelLayoutTag_AAC_6_0)
133 TAG(kAudioChannelLayoutTag_AAC_6_1)
134 TAG(kAudioChannelLayoutTag_AAC_7_0)
135 TAG(kAudioChannelLayoutTag_AAC_7_1)
136 TAG(kAudioChannelLayoutTag_AAC_Octagonal)
137
138 TAG(kAudioChannelLayoutTag_TMH_10_2_std)
139 TAG(kAudioChannelLayoutTag_TMH_10_2_full)
140 { 0, NULL } // sentinel
141};
142
143static const char *prefix = "kAudioChannelLayoutTag_";
144
145UInt32 CAChannelLayouts::StringToConstant(const char *s)
146{
147 int prefixlen = strlen(prefix);
148 for (LayoutTag *t = gLayoutTags; t->name != NULL; ++t) {
149 if (!strcmp(t->name, s) || !strcmp(t->name + prefixlen, s))
150 return t->constant;
151 }
152 return kInvalidTag;
153}
154
155const char * CAChannelLayouts::ConstantToString(UInt32 layoutTag)
156{
157 static char buffer[256];
158 for (LayoutTag *t = gLayoutTags; t->name != NULL; ++t) {
159 if (layoutTag == t->constant)
160 return t->name + strlen(prefix);
161 }
162 sprintf(buffer, "unknown (0x%lx)", layoutTag);
163 return buffer;
164}
165