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Add API to AudioBackend to request update to devices

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This commit is contained in:
Tim Mayberry 2015-08-25 17:21:31 +10:00
parent 585930f058
commit 16f8c3ce85
1 changed files with 14 additions and 0 deletions
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14
libs/ardour/ardour/audio_backend.h
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@ -219,6 +219,20 @@ class LIBARDOUR_API AudioBackend : public PortEngine {
virtual std::vector<DeviceStatus> enumerate_output_devices () const
{ return std::vector<DeviceStatus>(); }
/**
* @return true if backend supports requesting an update to the device list
* and any cached properties associated with the devices.
*/
virtual bool can_request_update_devices () { return false; }
/**
* Request an update to the list of devices returned in the enumerations.
* The Backend must return true from can_request_update_devices to support
* this interface.
* @return true if the devices were updated
*/
virtual bool update_devices () { return false; }
/** Returns a collection of float identifying sample rates that are
* potentially usable with the hardware identified by @param device.
* Any of these values may be supplied in other calls to this backend