add can_change_{sample_rate,buffer_size}_while_running() methods to an AudioBackend

Allows the GUI and other stuff to know whether or not changing the SR/bufsize is possible while running, which is about to become useful

2 files changed, 15 insertions, 0 deletions

diff --git a/libs/backends/jack/jack_audiobackend.cc b/libs/backends/jack/jack_audiobackend.cc
index 22e5a525ea..f452a78d49 100644
--- a/libs/backends/jack/jack_audiobackend.cc
+++ b/libs/backends/jack/jack_audiobackend.cc
@@ -935,3 +935,15 @@ JACKAudioBackend::n_physical (unsigned long flags) const
 
 	return c;
 }
+
+bool
+JACKAudioBackend::can_change_sample_rate_when_running () const
+{
+	return false;
+}
+
+bool
+JACKAudioBackend::can_change_buffer_size_when_running () const
+{
+	return true;
+}
diff --git a/libs/backends/jack/jack_audiobackend.h b/libs/backends/jack/jack_audiobackend.h
index 5ba9ee63d7..f47b630f49 100644
--- a/libs/backends/jack/jack_audiobackend.h
+++ b/libs/backends/jack/jack_audiobackend.h
@@ -61,6 +61,9 @@ class JACKAudioBackend : public AudioBackend {
     uint32_t available_input_channel_count (const std::string& device) const;
     uint32_t available_output_channel_count (const std::string& device) const;
 
+    bool can_change_sample_rate_when_running() const;
+    bool can_change_buffer_size_when_running() const;
+
     int set_device_name (const std::string&);
     int set_sample_rate (float);
     int set_buffer_size (uint32_t);