1 files changed, 66 insertions, 0 deletions
diff --git a/src/wx/audio_backend.h b/src/wx/audio_backend.h
new file mode 100644
index 000000000..aa4adf13c
--- /dev/null
+++ b/src/wx/audio_backend.h
@@ -0,0 +1,66 @@
+/*
+    Copyright (C) 2024 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+
+#include <dcp/warnings.h>
+LIBDCP_DISABLE_WARNINGS
+#include <RtAudio.h>
+LIBDCP_ENABLE_WARNINGS
+#include <boost/optional.hpp>
+
+
+
+class AudioBackend
+{
+public:
+	AudioBackend();
+
+	AudioBackend(AudioBackend const&) = delete;
+	AudioBackend& operator=(AudioBackend const&) = delete;
+
+	RtAudio& rtaudio() {
+		return _rtaudio;
+	}
+
+	std::vector<std::string> output_device_names();
+	boost::optional<std::string> default_device_name();
+	boost::optional<int> device_output_channels(std::string name);
+
+	void abort_stream_if_running();
+	boost::optional<std::string> start_stream();
+
+#if (RTAUDIO_VERSION_MAJOR >= 6)
+	std::string last_rtaudio_error() const;
+#endif
+
+	static AudioBackend* instance();
+
+private:
+	static AudioBackend* _instance;
+
+	RtAudio _rtaudio;
+
+#if (RTAUDIO_VERSION_MAJOR >= 6)
+	void rtaudio_error_callback(std::string const& error);
+	mutable boost::mutex _last_rtaudio_error_mutex;
+	std::string _last_rtaudio_error;
+#endif
+};
+