1 files changed, 60 insertions, 0 deletions
diff --git a/binding/audiomixer.h b/binding/audiomixer.h
new file mode 100644
index 0000000..f4e83c7
--- /dev/null
+++ b/binding/audiomixer.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright © 2019 Collabora Ltd.
+ *   @author George Kiagiadakis <george.kiagiadakis@collabora.com>
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <stdbool.h>
+
+struct audiomixer;
+
+struct mixer_control
+{
+	char name[32];
+	double volume;
+	bool mute;
+};
+
+struct audiomixer_events
+{
+	void (*controls_changed) (void *data);
+
+	void (*value_changed) (void *data,
+#define MIXER_CONTROL_CHANGE_FLAG_VOLUME (1<<0)
+#define MIXER_CONTROL_CHANGE_FLAG_MUTE   (1<<1)
+				unsigned int change_mask,
+				const struct mixer_control *control);
+};
+
+struct audiomixer * audiomixer_new(void);
+void audiomixer_free(struct audiomixer *self);
+
+/* locking is required to call any of the methods below
+ * and to access any structure maintained by audiomixer */
+void audiomixer_lock(struct audiomixer *self);
+void audiomixer_unlock(struct audiomixer *self);
+
+int audiomixer_ensure_connected(struct audiomixer *self, int timeout_sec);
+int audiomixer_ensure_controls(struct audiomixer *self, int timeout_sec);
+
+const struct mixer_control ** audiomixer_get_active_controls(
+	struct audiomixer *self,
+	unsigned int *n_controls);
+
+const struct mixer_control * audiomixer_find_control(
+	struct audiomixer *self,
+	const char *name);
+
+void audiomixer_add_event_listener(struct audiomixer *self,
+	const struct audiomixer_events *events,
+	void *data);
+
+void audiomixer_change_volume(struct audiomixer *self,
+	const struct mixer_control *control,
+	double volume);
+
+void audiomixer_change_mute(struct audiomixer *self,
+	const struct mixer_control *control,
+	bool mute);
+