From d3f2220be48d1a4a7b2b90316dd78237b3f2a6c6 Mon Sep 17 00:00:00 2001
From: Keith Au <keithau@xmos.com>
Date: Fri, 28 Feb 2020 15:53:27 +0800
Subject: [PATCH] added xua_api.h for extern declaration of
 get/set_usb_to/from_device_rate/res APIs and removed from c/xc files

---
 lib_xua/api/xua_api.h                        | 18 ++++++++++++++++++
 lib_xua/src/core/buffer/decouple/decouple.xc |  7 +------
 lib_xua/src/core/endpoint0/xua_endpoint0.c   |  9 ++-------
 3 files changed, 21 insertions(+), 13 deletions(-)
 create mode 100644 lib_xua/api/xua_api.h

diff --git a/lib_xua/api/xua_api.h b/lib_xua/api/xua_api.h
new file mode 100644
index 00000000..f3d3c735
--- /dev/null
+++ b/lib_xua/api/xua_api.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2017-2020, XMOS Ltd, All rights reserved
+
+#ifndef __XUA_API_H__
+#define __XUA_API_H__
+
+#if __XC__
+extern void set_usb_to_device_rate(uint32_t rate);
+extern void set_device_to_usb_rate(uint32_t rate);
+extern void set_usb_to_device_bit_res(uint32_t rate);
+extern void set_device_to_usb_bit_res(uint32_t rate);
+#endif
+
+extern uint32_t get_usb_to_device_rate();
+extern uint32_t get_device_to_usb_rate();
+extern uint32_t get_usb_to_device_bit_res();
+extern uint32_t get_device_to_usb_bit_res();
+
+#endif  //__XUA_API_H__
diff --git a/lib_xua/src/core/buffer/decouple/decouple.xc b/lib_xua/src/core/buffer/decouple/decouple.xc
index d501ad9f..ae6d8ed5 100644
--- a/lib_xua/src/core/buffer/decouple/decouple.xc
+++ b/lib_xua/src/core/buffer/decouple/decouple.xc
@@ -7,6 +7,7 @@
 #include "interrupt.h"
 #include "xua_commands.h"
 #include "xud.h"
+#include "xua_api.h"
 
 #ifdef NATIVE_DSD
 #include "usbaudio20.h"             /* Defines from the USB Audio 2.0 Specifications */
@@ -17,12 +18,6 @@
 #endif
 #define MAX(x,y) ((x)>(y) ? (x) : (y))
 
-#if(defined XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES)
-extern uint32_t get_usb_to_device_rate();
-extern uint32_t get_device_to_usb_rate();
-extern uint32_t get_usb_to_device_bit_res();
-extern uint32_t get_device_to_usb_bit_res();
-#endif
 
 /* TODO use SLOTSIZE to potentially save memory */
 /* Note we could improve on this, for one subslot is set to 4 */
diff --git a/lib_xua/src/core/endpoint0/xua_endpoint0.c b/lib_xua/src/core/endpoint0/xua_endpoint0.c
index 972f4a61..0a5dbcac 100755
--- a/lib_xua/src/core/endpoint0/xua_endpoint0.c
+++ b/lib_xua/src/core/endpoint0/xua_endpoint0.c
@@ -29,6 +29,8 @@
 #include "dsd_support.h"
 #endif
 
+#include "xua_api.h"
+
 #ifndef __XC__
 /* Support for xCORE  channels in C */
 #define null 0
@@ -65,13 +67,6 @@ extern void device_reboot(void);
 #include "xua_hid.h"
 #endif
 
-#if(defined XUA_USB_DESCRIPTOR_OVERWRITE_RATE_RES)
-extern uint32_t get_usb_to_device_rate();
-extern uint32_t get_device_to_usb_rate();
-extern uint32_t get_usb_to_device_bit_res();
-extern uint32_t get_device_to_usb_bit_res();
-#endif
-
 unsigned int DFU_mode_active = 0;         // 0 - App active, 1 - DFU active
 
 /* Global volume and mute tables */