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Network Audio System Protocol Description
($Id: protocol.txt,v 1.2 1999/07/08 00:51:29 jon Exp $)
($NCDId: @(#)protocol.txt,v 1.2 1994/06/01 17:50:38 greg Exp $)
Common Types
__________________________________________________________________
Name Value
__________________________________________________________________
LISTofFOO A type name of the form LISTofFOO means a counted
list of elements of type FOO. The size of the
length field may vary (it is not necessarily the
same size as a FOO), and in some cases, it may be
implicit. Except where explicitly noted, zero-length
lists are legal.
AUID 32-bit value (top three bits guaranteed to be zero)
AUDEVICEID 32-bit value (top three bits guaranteed to be zero)
AUBUCKETID 32-bit value (top three bits guaranteed to be zero)
AUFLOWID 32-bit value (top three bits guaranteed to be zero)
BYTE 8-bit value
INT8 8-bit signed integer
INT16 16-bit signed integer
INT32 32-bit signed integer
CARD8 8-bit unsigned integer
CARD16 16-bit unsigned integer
CARD32 32-bit unsigned integer
AUFIXED CARD32
TIMESTAMP CARD32
BOOL {True, False}
STRING8 LISTofCARD8
Connection Setup
Connection Initiation
byte-order: CARD8
protocol-major-version: CARD16
protocol-minor-version: CARD16
authorization-protocol-name: STRING8
authorization-protocol-data: STRING8
Server Response
success: BOOL
protocol-major-version: CARD16
protocol-minor-version: CARD16
length: CARD16
The client receives the following additional data if authorization
fails:
reason: STRING8
The client receives the following additional data if authorization
is accepted:
vendor: STRING8
release-number: CARD32
resource-id-base, resource-id-mask: CARD32
maximum-request-length: CARD16
min-sample-rate, max-sample-rate: CARD16
max-tracks: CARD8
data-formats: LISTofCARD8
elements: LISTofCARD8
wave-forms: LISTofCARD8
actions: LISTofCARD8
devices: LISTofDEVICEATTRIBUTES
buckets: LISTofBUCKETATTRIBUTES
radios: LISTofRADIOATTRIBUTES
where:
COMMON value-mask: CARD32
changable-mask: CARD32
id: AUID
kind: CARD8
use: CARD8
format: CARD8
num-tracks: CARD8
access: CARD32
description: STRING8
DEVICE location: CARD32
gain: CARD32
min-sample-rate: CARD16
max-sample-rate: CARD16
line-mode: CARD8
children: LISTofAUDEVICEID
BUCKET sample-rate: CARD16
num-samples: CARD32
DEVICEATTRIBUTES common: COMMON
device: DEVICE
BUCKETATTRIBUTES common: COMMON
bucket: BUCKET
RADIOATTRIBUTES XXX unimplemented XXX
Requests
*** ListDevices
-->
devices: LISTofDEVICEATTRIBUTES
*** GetDeviceAttributes
device: AUDEVICEID
-->
attributes: DEVICEATTRIBUTES
*** SetDeviceAttributes
device: AUDEVICEID
attributes: DEVICEATTRIBUTES
*** CreateBucket
bucket: AUBUCKETID
attributes: BUCKETATTRIBUTES
*** DestroyBucket
bucket: AUBUCKETID
*** ListBuckets
-->
buckets: LISTofBUCKETATTRIBUTES
*** GetBucketAttributes
bucket: AUBUCKETID
-->
attributes: BUCKETATTRIBUTES
*** SetBucketAttributes XXX unimplemented XXX
bucket: AUBUCKETID
attributes: BUCKETATTRIBUTES
*** CreateRadio XXX unimplemented XXX
*** DestroyRadio XXX unimplemented XXX
*** ListRadios XXX unimplemented XXX
*** GetRadioAttributes XXX unimplemented XXX
*** SetRadioAttributes XXX unimplemented XXX
*** CreateFlow
flow: AUFLOWID
*** DestroyFlow
flow: AUFLOWID
*** GetFlowAttributes XXX unimplemented XXX
*** SetFlowAttributes XXX unimplemented XXX
*** GetElements
flow: AUFLOWID
-->
clocked: BOOL
flow: AUFLOWID
elements: LISTofELEMENT
where:
ELEMENT type: CARD16
element: IMPORTCLIENT or
IMPORTDEVICE or
IMPORTBUCKET or
IMPORTWAVEFORM or
IMPORTRADIO or
BUNDLE or
MULTIPLYCONSTANT or
ADDCONSTANT or
SUM or
EXPORTCLIENT or
EXPORTDEVICE or
EXPORTBUCKET or
EXPORTRADIO or
EXPORTMONITOR
ACTION flow: AUFLOWID
element-num: CARD8
trigger-state: CARD8
trigger-prev-state: CARD8
trigger-reason: CARD8
action: CARD8
new-state: CARD8
TRACK element-num: CARD8
track: CARD8
IMPORTCLIENT sample-rate: CARD16
format: CARD8
num-tracks: CARD8
discard: BOOL
max-samples: CARD32
low-water-mark: CARD32
actions: LISTofACTION
IMPORTDEVICE sample-rate: CARD16
num-samples: CARD32
device: AUDEVICEID
actions: LISTofACTION
IMPORTBUCKET sample-rate: CARD16
num-samples: CARD32
bucket: AUBUCKETID
offset: CARD32
actions: LISTofACTION
IMPORTWAVEFORM sample-rate: CARD16
num-samples: CARD32
wave-form: CARD8
frequency: CARD32
actions: LISTofACTION
IMPORTRADIO XXX unimplemented XXX
BUNDLE tracks: LISTofTRACK
MULTIPLYCONSTANT input: CARD16
constant: AUFIXED
ADDCONSTANT input: CARD16
constant: AUFIXED
SUM inputs: LISTofCARD16
EXPORTCLIENT sample-rate: CARD16
input: CARD16
format: CARD8
num-tracks: CARD8
discard: BOOL
max-samples: CARD32
high-water-mark: CARD32
actions: LISTofACTION
EXPORTDEVICE sample-rate: CARD16
input: CARD16
num-samples: CARD32
actions: LISTofACTION
device: AUDEVICEID
actions: LISTofACTION
EXPORTBUCKET input: CARD16
num-samples: CARD32
bucket: AUBUCKETID
offset: CARD32
actions: LISTofACTION
EXPORTRADIO XXX unimplemented XXX
EXPORTMONITOR event-rate: CARD16
input: CARD16
format: CARD8
num-tracks: CARD8
*** SetElements
flow: AUFLOWID
clocked: BOOL
elements: LISTofELEMENT
*** GetElementStates
states: LISTofELEMENTSTATE
-->
states: LISTofELEMENTSTATE
where:
ELEMENTSTATE flow: AUFLOWID
element-num: CARD8
state: CARD8
*** SetElementStates
states: LISTofELEMENTSTATE
*** GetElementParameters XXX unimplemented XXX
*** SetElementParameters
parameters: LISTofPARAMETER
where:
PARAMETER flow: AUFLOWID
element-num: CARD8
parameters: LISTofCARD32
*** WriteElement
flow: AUFLOWID
element-num: CARD8
state: CARD8
data: LISTofBYTE
*** ReadElement
flow: AUFLOWID
element-num: CARD8
num-bytes: CARD32
-->
data: LISTofBYTE
*** GrabComponent XXX unimplemented XXX
*** UngrabComponent XXX unimplemented XXX
*** SendEvent XXX unimplemented XXX
*** GetAllowedUsers XXX unimplemented XXX
*** SetAllowedUsers XXX unimplemented XXX
*** ListExtensions XXX unimplemented XXX
*** QueryExtension XXX unimplemented XXX
*** GetCloseDownMode
*** SetCloseDownMode
*** KillClient
*** GetServerTime
*** NoOperation
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