14 #define SRC_HISTORY_BITS (6)
15 #define SRC_HISTORY_LENGTH (1<<SRC_HISTORY_BITS)
16 #define SRC_HISTORY_MASK (SRC_HISTORY_LENGTH-1)
18 extern enum Resampler DefaultResampler
;
20 extern const ALsizei ResamplerPadding
[ResamplerMax
];
21 extern const ALsizei ResamplerPrePadding
[ResamplerMax
];
24 typedef struct ALbufferlistitem
26 struct ALbuffer
*buffer
;
27 struct ALbufferlistitem
*next
;
28 struct ALbufferlistitem
*prev
;
31 typedef struct HrtfState
{
34 ALIGN(16) ALfloat History
[MaxChannels
][SRC_HISTORY_LENGTH
];
35 ALIGN(16) ALfloat Values
[MaxChannels
][HRIR_LENGTH
][2];
39 typedef struct HrtfParams
{
42 ALIGN(16) ALfloat Coeffs
[MaxChannels
][HRIR_LENGTH
][2];
43 ALIGN(16) ALfloat CoeffStep
[HRIR_LENGTH
][2];
44 ALuint Delay
[MaxChannels
][2];
48 typedef struct DirectParams
{
51 /* A mixing matrix. First subscript is the channel number of the input data
52 * (regardless of channel configuration) and the second is the channel
53 * target (eg. FrontLeft). Not used with HRTF. */
54 ALfloat Gains
[MaxChannels
][MaxChannels
];
56 /* A low-pass filter, using 2 chained one-pole filters. */
58 ALfloat history
[MaxChannels
*2];
61 typedef struct SendParams
{
62 struct ALeffectslot
*Slot
;
64 /* Gain control, which applies to all input channels to a single (mono)
68 /* A low-pass filter, using 2 chained one-pole filters. */
70 ALfloat history
[MaxChannels
*2];
74 typedef struct ALsource
76 /** Source properties. */
77 volatile ALfloat Pitch
;
78 volatile ALfloat Gain
;
79 volatile ALfloat OuterGain
;
80 volatile ALfloat MinGain
;
81 volatile ALfloat MaxGain
;
82 volatile ALfloat InnerAngle
;
83 volatile ALfloat OuterAngle
;
84 volatile ALfloat RefDistance
;
85 volatile ALfloat MaxDistance
;
86 volatile ALfloat RollOffFactor
;
87 volatile ALfloat Position
[3];
88 volatile ALfloat Velocity
[3];
89 volatile ALfloat Orientation
[3];
90 volatile ALboolean HeadRelative
;
91 volatile ALboolean Looping
;
92 volatile enum DistanceModel DistanceModel
;
93 volatile ALboolean DirectChannels
;
95 volatile ALboolean DryGainHFAuto
;
96 volatile ALboolean WetGainAuto
;
97 volatile ALboolean WetGainHFAuto
;
98 volatile ALfloat OuterGainHF
;
100 volatile ALfloat AirAbsorptionFactor
;
101 volatile ALfloat RoomRolloffFactor
;
102 volatile ALfloat DopplerFactor
;
104 enum Resampler Resampler
;
107 * Last user-specified offset, and the offset type (bytes, samples, or
113 /** Source type (static, streaming, or undetermined) */
114 volatile ALint SourceType
;
116 /** Source state (initial, playing, paused, or stopped) */
117 volatile ALenum state
;
121 * Source offset in samples, relative to the currently playing buffer, NOT
122 * the whole queue, and the fractional (fixed-point) offset to the next
126 ALuint position_fraction
;
128 /** Source Buffer Queue info. */
129 ALbufferlistitem
*queue
;
130 ALuint BuffersInQueue
;
131 ALuint BuffersPlayed
;
133 /** Current buffer sample info. */
137 /** Direct filter and auxiliary send info. */
139 ALfloat DirectGainHF
;
142 struct ALeffectslot
*Slot
;
150 /** Current target parameters used for mixing. */
159 SendParams Send
[MAX_SENDS
];
161 /** Source needs to update its mixing parameters. */
162 volatile ALenum NeedsUpdate
;
164 /** Method to update mixing parameters. */
165 ALvoid (*Update
)(struct ALsource
*self
, const ALCcontext
*context
);
170 #define ALsource_Update(s,a) ((s)->Update(s,a))
172 ALvoid
SetSourceState(ALsource
*Source
, ALCcontext
*Context
, ALenum state
);
173 ALboolean
ApplyOffset(ALsource
*Source
);
175 ALvoid
ReleaseALSources(ALCcontext
*Context
);