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comparison OpenAL32/Include/alBuffer.h @ 0:f9476ff7637e

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initial forking of open-al to create multiple listeners
author Robert McIntyre <rlm@mit.edu>
date Tue, 25 Oct 2011 13:02:31 -0700
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-1:000000000000 0:f9476ff7637e
1 #ifndef _AL_BUFFER_H_
2 #define _AL_BUFFER_H_
3
4 #include "AL/al.h"
5
6 #ifdef __cplusplus
7 extern "C" {
8 #endif
9
10 /* User formats */
11 enum UserFmtType {
12 UserFmtByte = AL_BYTE,
13 UserFmtUByte = AL_UNSIGNED_BYTE,
14 UserFmtShort = AL_SHORT,
15 UserFmtUShort = AL_UNSIGNED_SHORT,
16 UserFmtInt = AL_INT,
17 UserFmtUInt = AL_UNSIGNED_INT,
18 UserFmtFloat = AL_FLOAT,
19 UserFmtDouble = AL_DOUBLE,
20 UserFmtMulaw = AL_MULAW,
21 UserFmtIMA4 = AL_IMA4,
22 UserFmtByte3 = AL_BYTE3,
23 UserFmtUByte3 = AL_UNSIGNED_BYTE3,
24 };
25 enum UserFmtChannels {
26 UserFmtMono = AL_MONO,
27 UserFmtStereo = AL_STEREO,
28 UserFmtRear = AL_REAR,
29 UserFmtQuad = AL_QUAD,
30 UserFmtX51 = AL_5POINT1, /* (WFX order) */
31 UserFmtX61 = AL_6POINT1, /* (WFX order) */
32 UserFmtX71 = AL_7POINT1 /* (WFX order) */
33 };
34
35 ALboolean DecomposeUserFormat(ALenum format, enum UserFmtChannels *chans,
36 enum UserFmtType *type);
37 ALuint BytesFromUserFmt(enum UserFmtType type);
38 ALuint ChannelsFromUserFmt(enum UserFmtChannels chans);
39 static __inline ALuint FrameSizeFromUserFmt(enum UserFmtChannels chans,
40 enum UserFmtType type)
41 {
42 return ChannelsFromUserFmt(chans) * BytesFromUserFmt(type);
43 }
44
45
46 /* Storable formats */
47 enum FmtType {
48 FmtByte = UserFmtByte,
49 FmtShort = UserFmtShort,
50 FmtFloat = UserFmtFloat,
51 };
52 enum FmtChannels {
53 FmtMono = UserFmtMono,
54 FmtStereo = UserFmtStereo,
55 FmtRear = UserFmtRear,
56 FmtQuad = UserFmtQuad,
57 FmtX51 = UserFmtX51,
58 FmtX61 = UserFmtX61,
59 FmtX71 = UserFmtX71,
60 };
61
62 ALboolean DecomposeFormat(ALenum format, enum FmtChannels *chans, enum FmtType *type);
63 ALuint BytesFromFmt(enum FmtType type);
64 ALuint ChannelsFromFmt(enum FmtChannels chans);
65 static __inline ALuint FrameSizeFromFmt(enum FmtChannels chans, enum FmtType type)
66 {
67 return ChannelsFromFmt(chans) * BytesFromFmt(type);
68 }
69
70
71 typedef struct ALbuffer
72 {
73 ALvoid *data;
74 ALsizei size;
75
76 ALsizei Frequency;
77 enum FmtChannels FmtChannels;
78 enum FmtType FmtType;
79
80 enum UserFmtChannels OriginalChannels;
81 enum UserFmtType OriginalType;
82 ALsizei OriginalSize;
83 ALsizei OriginalAlign;
84
85 ALsizei LoopStart;
86 ALsizei LoopEnd;
87
88 ALuint refcount; // Number of sources using this buffer (deletion can only occur when this is 0)
89
90 // Index to itself
91 ALuint buffer;
92 } ALbuffer;
93
94 ALvoid ReleaseALBuffers(ALCdevice *device);
95
96 #ifdef __cplusplus
97 }
98 #endif
99
100 #endif