OpenAL32/Include/alBuffer.h

   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 ALuint BytesFromUserFmt(enum UserFmtType type);
  36 ALuint ChannelsFromUserFmt(enum UserFmtChannels chans);
  37 static __inline ALuint FrameSizeFromUserFmt(enum UserFmtChannels chans,
  38                                             enum UserFmtType type)
  39 {
  40     return ChannelsFromUserFmt(chans) * BytesFromUserFmt(type);
  41 }
  42
  43
  44 /* Storable formats */
  45 enum FmtType {
  46     FmtByte  = UserFmtByte,
  47     FmtShort = UserFmtShort,
  48     FmtFloat = UserFmtFloat,
  49 };
  50 enum FmtChannels {
  51     FmtMono   = UserFmtMono,
  52     FmtStereo = UserFmtStereo,
  53     FmtRear   = UserFmtRear,
  54     FmtQuad   = UserFmtQuad,
  55     FmtX51    = UserFmtX51,
  56     FmtX61    = UserFmtX61,
  57     FmtX71    = UserFmtX71,
  58 };
  59
  60 ALuint BytesFromFmt(enum FmtType type);
  61 ALuint ChannelsFromFmt(enum FmtChannels chans);
  62 static __inline ALuint FrameSizeFromFmt(enum FmtChannels chans, enum FmtType type)
  63 {
  64     return ChannelsFromFmt(chans) * BytesFromFmt(type);
  65 }
  66
  67
  68 typedef struct ALbuffer
  69 {
  70     ALvoid  *data;
  71     ALsizei  size;
  72
  73     ALsizei          Frequency;
  74     enum FmtChannels FmtChannels;
  75     enum FmtType     FmtType;
  76
  77     enum UserFmtChannels OriginalChannels;
  78     enum UserFmtType     OriginalType;
  79     ALsizei OriginalSize;
  80     ALsizei OriginalAlign;
  81
  82     ALsizei  LoopStart;
  83     ALsizei  LoopEnd;
  84
  85     RefCount ref; // Number of sources using this buffer (deletion can only occur when this is 0)
  86
  87     RWLock lock;
  88
  89     // Index to itself
  90     ALuint buffer;
  91 } ALbuffer;
  92
  93 ALvoid ReleaseALBuffers(ALCdevice *device);
  94
  95 #ifdef __cplusplus
  96 }
  97 #endif
  98
  99 #endif