diff options
Diffstat (limited to 'libs/ardour/ardour/audio_backend.h')
| -rw-r--r-- | libs/ardour/ardour/audio_backend.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/libs/ardour/ardour/audio_backend.h b/libs/ardour/ardour/audio_backend.h index 08dd7fb0b5..77b7eadb48 100644 --- a/libs/ardour/ardour/audio_backend.h +++ b/libs/ardour/ardour/audio_backend.h @@ -95,12 +95,25 @@ class AudioBackend { */ virtual int set_driver (const std::string& /*drivername*/) { return 0; } - /** Returns a collection of strings identifying devices known - * to this backend. Any of these strings may be used to identify a + /** used to list device names along with whether or not they are currently + * available. + */ + struct DeviceStatus { + std::string name; + bool available; + + DeviceStatus (const std::string& s, bool avail) : name (s), available (avail) {} + }; + + /** Returns a collection of DeviceStatuses identifying devices discovered + * by this backend since the start of the process. + * + * Any of the names in each DeviceStatus may be used to identify a * device in other calls to the backend, though any of them may become * invalid at any time. */ - virtual std::vector<std::string> enumerate_devices () const = 0; + virtual std::vector<DeviceStatus> enumerate_devices () const = 0; + /** 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 |