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356 lines
8.0 KiB
Plaintext
356 lines
8.0 KiB
Plaintext
BlueZ D-Bus Media API description
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*********************************
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Media hierarchy
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===============
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Service org.bluez
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Interface org.bluez.Media
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Object path [variable prefix]/{hci0,hci1,...}
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Methods void RegisterEndpoint(object endpoint, dict properties)
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Register a local end point to sender, the sender can
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register as many end points as it likes.
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Note: If the sender disconnects the end points are
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automatically unregistered.
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possible properties:
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string UUID:
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UUID of the profile which the endpoint
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is for.
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byte Codec:
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Assigned number of codec that the
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endpoint implements. The values should
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match the profile specification which
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is indicated by the UUID.
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array{byte} Capabilities:
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Capabilities blob, it is used as it is
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so the size and byte order must match.
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Possible Errors: org.bluez.Error.InvalidArguments
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org.bluez.Error.NotSupported - emitted
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when interface for the end-point is
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disabled.
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void UnregisterEndpoint(object endpoint)
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Unregister sender end point.
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void RegisterPlayer(object player, dict properties,
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dict metadata)
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Register a media player object to sender, the sender
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can register as many objects as it likes.
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Note: If the sender disconnects its objects are
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automatically unregistered.
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Properties:
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string Equalizer:
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Possible values: "off" or "on"
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string Repeat:
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Possible values: "off", "singletrack",
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"alltracks" or "group"
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string Shuffle:
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Possible values: "off", "alltracks" or
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"group"
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string Scan:
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Possible values: "off", "alltracks" or
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"group"
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string Status:
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Possible values: "playing", "stopped",
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"paused",
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"forward-seek",
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"reverse-seek" or
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"error"
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uint32 Position
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Playback position in milliseconds
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Metadata:
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string Title:
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Track title name
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string Artist:
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Track artist name
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string Album:
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Track album name
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string Genre:
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Track genre name
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uint32 NumberOfTracks:
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Number of tracks in total
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uint32 Number:
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Track number
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uint32 Duration:
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Track duration in milliseconds
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Possible Errors: org.bluez.Error.InvalidArguments
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org.bluez.Error.NotSupported
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void UnregisterPlayer(object player)
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Unregister sender media player.
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MediaPlayer hierarchy
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=====================
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Service unique name (Target role)
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org.bluez (Controller role)
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Interface org.bluez.MediaPlayer
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Object path freely definable (Target role)
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[variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX/playerX
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(Controller role)
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Methods dict GetTrack()
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Returns known metadata of the current track.
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See TrackChanged for possible values.
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void Release()
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This method gets called when the service daemon
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unregisters the player which can then perform
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cleanup tasks. There is no need to unregister the
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player, because when this method gets called it has
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already been unregistered.
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Signals TrackChanged(dict metadata)
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This signal indicates that current track has changed.
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All available metadata for the new track shall be set
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at once in the metadata argument. Metadata cannot be
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updated in parts, otherwise it will be interpreted as
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multiple track changes.
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Possible values:
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string Title:
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Track title name
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string Artist:
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Track artist name
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string Album:
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Track album name
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string Genre:
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Track genre name
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uint32 NumberOfTracks:
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Number of tracks in total
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uint32 Number:
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Track number
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uint32 Duration:
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Track duration in milliseconds
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Properties string Equalizer [readwrite]
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Possible values: "off" or "on"
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string Repeat [readwrite]
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Possible values: "off", "singletrack", "alltracks" or
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"group"
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string Shuffle [readwrite]
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Possible values: "off", "alltracks" or "group"
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string Scan [readwrite]
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Possible values: "off", "alltracks" or "group"
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string Status [readonly]
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Possible status: "playing", "stopped", "paused",
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"forward-seek", "reverse-seek" or
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"error"
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uint32 Position [readonly]
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Playback position in milliseconds. Changing the
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position may generate additional events that will be
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sent to the remote device. When position is 0 it means
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the track is starting and when it's greater than or
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equal to track's duration the track has ended. Note
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that even if duration is not available in metadata it's
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possible to signal its end by setting position to the
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maximum uint32 value.
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MediaEndpoint hierarchy
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=======================
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Service unique name
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Interface org.bluez.MediaEndpoint
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Object path freely definable
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Methods void SetConfiguration(object transport, dict properties)
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Set configuration for the transport.
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array{byte} SelectConfiguration(array{byte} capabilities)
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Select preferable configuration from the supported
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capabilities.
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Returns a configuration which can be used to setup
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a transport.
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Note: There is no need to cache the selected
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configuration since on success the configuration is
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send back as parameter of SetConfiguration.
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void ClearConfiguration(object transport)
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Clear transport configuration.
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void Release()
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This method gets called when the service daemon
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unregisters the endpoint. An endpoint can use it to do
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cleanup tasks. There is no need to unregister the
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endpoint, because when this method gets called it has
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already been unregistered.
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MediaTransport hierarchy
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========================
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Service org.bluez
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Interface org.bluez.MediaTransport
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Object path [variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX/fdX
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Methods fd, uint16, uint16 Acquire(string accesstype)
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Acquire transport file descriptor and the MTU for read
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and write respectively.
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possible accesstype:
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"r" : Read only access
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"w" : Write only access
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"rw": Read and write access
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The accesstype string can also be combined with a "?"
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suffix, which will make the request optional. This
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typically means the transport will only be acquired if
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it is already available (remote-initiated), but
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otherwise no request will be sent to the remote side.
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In this last case the function will fail. Note that,
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due to compatibility issues with older versions of
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BlueZ, clients are encouraged to use exactly the same
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accesstype for Release(), matching the string provided
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to Acquire().
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void Release(string accesstype)
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Releases file descriptor.
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Signals void PropertyChanged(string name, variant value)
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This signal indicates a changed value of the given
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property.
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Properties object Device [readonly]
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Device object which the transport is connected to.
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string UUID [readonly]
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UUID of the profile which the transport is for.
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byte Codec [readonly]
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Assigned number of codec that the transport support.
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The values should match the profile specification which
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is indicated by the UUID.
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array{byte} Configuration [readonly]
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Configuration blob, it is used as it is so the size and
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byte order must match.
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string State [readonly]
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Indicates the state of the transport. Possible
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values are:
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"idle": not streaming
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"pending": streaming but not acquired
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"active": streaming and acquired
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uint16 Delay [readwrite]
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Optional. Transport delay in 1/10 of millisecond, this
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property is only writeable when the transport was
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acquired by the sender.
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boolean NREC [readwrite]
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Optional. Indicates if echo cancelling and noise
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reduction functions are active in the transport, this
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property is only writeable when the transport was
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acquired by the sender.
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boolean InbandRingtone [readwrite]
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Optional. Indicates if the transport support sending
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ringtones, this property is only writeable when the
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transport was acquired by the sender.
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string Routing [readonly]
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Optional. Indicates where is the transport being routed
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Possible Values: "HCI" or "PCM"
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uint16 Volume [readwrite]
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Optional. Indicates volume level of the transport,
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this property is only writeable when the transport was
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acquired by the sender.
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Possible Values: 0-127
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