System.MacOSX.CoreAudio

macosx-core-0.0.0: Partial bindings to Core* libraries in Mac OS X

System.MacOSX.CoreAudio

Contents

some basic types
more types
HostTime
low-level whatever
enumerations
properties

Description

Partial binding to CoreAudio. At the moment only HostTime and parts of the HAL (Hardware Abstraction Layer) is supported.

See http://developer.apple.com/documentation/MusicAudio/Reference/CACoreAudioReference/AudioHardware/

Synopsis

type Device = UInt32

type Stream = UInt32

data AudioValueRange = AudioValueRange Float64 Float64

= In

type AudioDeviceIOProc a b = UInt32 -> Ptr AudioTimeStamp -> Ptr (AudioBufferList a) -> Ptr AudioTimeStamp -> Ptr (AudioBufferList a) -> Ptr AudioTimeStamp -> Ptr b -> IO OSStatus

type AudioDeviceIOProcFloat c = AudioDeviceIOProc Float c

mkAudioDeviceIOProc :: AudioDeviceIOProc a b -> IO (FunPtr (AudioDeviceIOProc a b))

data AudioTimeStamp = AudioTimeStamp {

ats_SampleTime :: Float64

ats_HostTime :: UInt64

ats_RateScalar :: Float64

ats_WordClockTime :: UInt64

ats_SMPTETime :: SMPTETime

ats_Flags :: UInt32

ats_Reserved :: UInt32

}

data SMPTETime = SMPTETime {

smpte_Counter :: UInt64

smpte_Type :: UInt32

smpte_Flags :: UInt32

smpte_Hours :: SInt16

smpte_Minutes :: SInt16

smpte_Seconds :: SInt16

smpte_Frames :: SInt16

}

data AudioBuffer a = AudioBuffer {

ab_NumberChannels :: UInt32

ab_DataByteSize :: UInt32

ab_Data :: Ptr a

}

data AudioBufferList a = AudioBufferList [AudioBuffer a]

pokeAudioBufferList :: Ptr (AudioBufferList a) -> AudioBufferList a -> IO Int

peekAudioBufferList :: Ptr (AudioBufferList a) -> IO (AudioBufferList a)

audioGetCurrentHostTime :: IO UInt64

audioConvertHostTimeToNanos :: UInt64 -> IO UInt64

audioConvertNanosToHostTime :: UInt64 -> IO UInt64

audioGetCurrentTimeInNanos :: IO UInt64

audioDeviceStart :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

audioDeviceStop :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

audioDeviceAddIOProc :: Device -> FunPtr (AudioDeviceIOProc a b) -> Ptr b -> IO OSStatus

audioDeviceRemoveIOProc :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

enumerateAudioDevices :: IO [Device]

enumerateAudioStreams :: Device -> IO ([Stream], [Stream])

audioDeviceGetProperty :: Storable a => Device -> Int -> Direction -> String -> IO (Maybe a)

audioDeviceGetPropertyList :: Storable a => Device -> Int -> Direction -> String -> IO (Maybe [a])

audioDeviceGetPropertyString :: Device -> Int -> Direction -> String -> IO (Maybe String)

audioDeviceGetPropertyCFString :: Device -> Int -> Direction -> String -> IO (Maybe String)

audioDeviceSetProperty :: Storable a => Device -> UInt32 -> Direction -> String -> a -> IO OSStatus

audioDeviceName :: Device -> IO String

some basic types

type Device = UInt32

type Stream = UInt32

data AudioValueRange

Constructors

AudioValueRange Float64 Float64

show/hide

Instances

Show AudioValueRange

Storable AudioValueRange

data Direction

Constructors

In
Out

type AudioDeviceIOProc a b = UInt32 -> Ptr AudioTimeStamp -> Ptr (AudioBufferList a) -> Ptr AudioTimeStamp -> Ptr (AudioBufferList a) -> Ptr AudioTimeStamp -> Ptr b -> IO OSStatus

Arguments:

device :: UInt32,
currentTimeStamp :: Ptr AudioTimeStamp,
input :: Ptr (AudioBufferList a),
inputTimeStamp :: Ptr AudioTimeStamp,
output :: Ptr (AudioBufferList a),
outputTimeStamp :: Ptr AudioTimeStamp,
clientData :: Ptr b.

type AudioDeviceIOProcFloat c = AudioDeviceIOProc Float c

mkAudioDeviceIOProc :: AudioDeviceIOProc a b -> IO (FunPtr (AudioDeviceIOProc a b))

data AudioTimeStamp

Constructors

AudioTimeStamp

ats_SampleTime :: Float64
ats_HostTime :: UInt64
ats_RateScalar :: Float64
ats_WordClockTime :: UInt64
ats_SMPTETime :: SMPTETime
ats_Flags :: UInt32
ats_Reserved :: UInt32

show/hide

Instances

Storable AudioTimeStamp

data SMPTETime

Constructors

SMPTETime

smpte_Counter :: UInt64
smpte_Type :: UInt32
smpte_Flags :: UInt32
smpte_Hours :: SInt16
smpte_Minutes :: SInt16
smpte_Seconds :: SInt16
smpte_Frames :: SInt16

show/hide

Instances

Storable SMPTETime

data AudioBuffer a

Constructors

AudioBuffer

ab_NumberChannels :: UInt32
ab_DataByteSize :: UInt32
ab_Data :: Ptr a

show/hide

Instances

Storable (AudioBuffer a)

data AudioBufferList a

Constructors

AudioBufferList [AudioBuffer a]

pokeAudioBufferList :: Ptr (AudioBufferList a) -> AudioBufferList a -> IO Int

Returns the number of bytes written.

peekAudioBufferList :: Ptr (AudioBufferList a) -> IO (AudioBufferList a)

Does not need the length of the list, as it is stored in the memory.

audioGetCurrentHostTime :: IO UInt64

audioConvertHostTimeToNanos :: UInt64 -> IO UInt64

audioConvertNanosToHostTime :: UInt64 -> IO UInt64

audioGetCurrentTimeInNanos :: IO UInt64

low-level whatever

audioDeviceStart :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

audioDeviceStop :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

audioDeviceAddIOProc :: Device -> FunPtr (AudioDeviceIOProc a b) -> Ptr b -> IO OSStatus

audioDeviceRemoveIOProc :: Device -> FunPtr (AudioDeviceIOProc a b) -> IO OSStatus

enumerateAudioDevices :: IO [Device]

enumerateAudioStreams :: Device -> IO ([Stream], [Stream])

input and output streams

audioDeviceGetProperty

:: Storable a
=> Device	device id
-> Int	channel
-> Direction	direction (input/output)
-> String	four character ID of the property
-> IO (Maybe a)

audioDeviceGetPropertyList :: Storable a => Device -> Int -> Direction -> String -> IO (Maybe [a])

audioDeviceGetPropertyString :: Device -> Int -> Direction -> String -> IO (Maybe String)

audioDeviceGetPropertyCFString :: Device -> Int -> Direction -> String -> IO (Maybe String)

audioDeviceSetProperty :: Storable a => Device -> UInt32 -> Direction -> String -> a -> IO OSStatus

audioDeviceName :: Device -> IO String

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