Implement new AudioBackend API for force updating devices in PortaudioBackend

4 files changed, 14 insertions, 4 deletions

diff --git a/libs/backends/portaudio/portaudio_backend.cc b/libs/backends/portaudio/portaudio_backend.cc
index 69911d3d67..ccb62627b9 100644
--- a/libs/backends/portaudio/portaudio_backend.cc
+++ b/libs/backends/portaudio/portaudio_backend.cc
@@ -145,6 +145,12 @@ PortAudioBackend::set_driver (const std::string& name)
 	return 0;
 }
 
+bool
+PortAudioBackend::update_devices ()
+{
+	return _pcmio->update_devices();
+}
+
 std::string
 PortAudioBackend::driver_name () const
 {
diff --git a/libs/backends/portaudio/portaudio_backend.h b/libs/backends/portaudio/portaudio_backend.h
index f1ff790e5e..9867f0de9c 100644
--- a/libs/backends/portaudio/portaudio_backend.h
+++ b/libs/backends/portaudio/portaudio_backend.h
@@ -170,6 +170,9 @@ class PortAudioBackend : public AudioBackend {
 		std::vector<std::string> enumerate_drivers () const;
 		int set_driver (const std::string&);
 
+		bool can_request_update_devices () { return true; }
+		bool update_devices ();
+
 		bool use_separate_input_and_output_devices () const;
 		std::vector<DeviceStatus> enumerate_devices () const;
 		std::vector<DeviceStatus> enumerate_input_devices () const;
diff --git a/libs/backends/portaudio/portaudio_io.cc b/libs/backends/portaudio/portaudio_io.cc
index 2cb46da658..5df848d426 100644
--- a/libs/backends/portaudio/portaudio_io.cc
+++ b/libs/backends/portaudio/portaudio_io.cc
@@ -527,17 +527,18 @@ PortAudioIO::add_devices ()
 	}
 }
 
-void
+bool
 PortAudioIO::update_devices()
 {
 	DEBUG_AUDIO ("Update devices\n");
-	if (_stream != NULL) return;
+	if (_stream != NULL) return false;
 	pa_deinitialize();
-	if (!pa_initialize()) return;
+	if (!pa_initialize()) return false;
 
 	clear_device_lists ();
 	add_none_devices ();
 	add_devices ();
+	return true;
 }
 
 void
diff --git a/libs/backends/portaudio/portaudio_io.h b/libs/backends/portaudio/portaudio_io.h
index bfd4d1e025..73ebb71028 100644
--- a/libs/backends/portaudio/portaudio_io.h
+++ b/libs/backends/portaudio/portaudio_io.h
@@ -63,7 +63,7 @@ public:
 	PaDeviceIndex get_default_input_device () const;
 	PaDeviceIndex get_default_output_device () const;
 
-	void     update_devices();
+	bool     update_devices();
 	void     input_device_list (std::map<int, std::string> &devices) const;
 	void     output_device_list (std::map<int, std::string> &devices) const;