Doc updates

module_usb_audio/audiostream/audiostream.h

@@ -0,0 +1,17 @@
+#ifndef _AUDIOSTREAM_H_
+#define _AUDIOSTREAM_H_
+
+/* Functions that handle functions that must occur on stream start/stop e.g. DAC mute/un-mute
+ *
+ * THESE NEED IMPLEMENTING FOR A SPECIFIC DESIGN
+ *
+ * */
+
+/* Any actions required for stream start e.g. DAC un-mute - run every stream start */
+void AudioStreamStart(void);
+
+/* Any actions required on stream stop e.g. DAC mute - run every steam stop  */
+void AudioStreamStop(void);
+
+#endif
+