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e576bd924f
New card database entry version 5 for card profile is sticky flag. New messaging API handlers set-profile-sticky and get-profile-sticky. When card profile is sticky, always restore it even if it is unavailable, and prevent switching from it when ports become unavailable. Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/568>
49 lines
1.6 KiB
Text
49 lines
1.6 KiB
Text
Message API reference
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The message API allows any object within pulseaudio to register a message
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handler. A message handler is a function that can be called by clients using
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PA_COMMAND_SEND_OBJECT_MESSAGE. A message consists at least of an object path
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and a message command, both specified as strings. Additional parameters can
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be specified using a single string in JSON format, but are not mandatory.
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The message handler returns an error number as defined in def.h and also returns
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a string in the "response" variable. Non-empty response will be in JSON format.
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The reference further down lists available messages, their parameters
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and return values.
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Reference:
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Object path: /core
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Message: list-handlers
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Parameters: None
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Return value: JSON array of handler description objects
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[{"name":"Handler name","description":"Description"} ...]
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Object path: /card/bluez_card.XX_XX_XX_XX_XX_XX/bluez
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Message: list-codecs
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Parameters: None
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Return value: JSON array of codec description objects
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[{"name":"codec1","description":"Codec 1"} ...]
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Object path: /card/bluez_card.XX_XX_XX_XX_XX_XX/bluez
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Message: get-codec
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Parameters: None
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Return value: "codec name"
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Object path: /card/bluez_card.XX_XX_XX_XX_XX_XX/bluez
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Message: switch-codec
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Parameters: "codec name"
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Return value: none
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Description: Set if card profile selection should be sticky instead of being automated
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Object path: /card/<card_name>
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Message: set-profile-sticky
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Parameters: JSON "true" or "false"
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Return value: none
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Description: Get if card profile selection should be sticky instead of being automated
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Object path: /card/<card_name>
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Message: get-profile-sticky
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Parameters: None
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Return value: JSON "true" or "false"
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