From 7a26ad5082ec72864ec7a641c3b68ae8e84aa33a Mon Sep 17 00:00:00 2001
From: yjun <jerrysteve1101@gmail.com>
Date: Mon, 17 Jun 2024 22:00:07 +0800
Subject: [PATCH] update(class/video): add xu descriptor definition

---
 class/video/usb_video.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/class/video/usb_video.h b/class/video/usb_video.h
index 69caa10a..ff36fece 100644
--- a/class/video/usb_video.h
+++ b/class/video/usb_video.h
@@ -861,6 +861,22 @@ struct video_cs_if_vc_output_terminal_descriptor {
 
 #define VIDEO_SIZEOF_VC_OUTPUT_TERMINAL_DESC 9
 
+struct video_cs_if_vc_extension_unit_descriptor {
+    uint8_t bLength;
+    uint8_t bDescriptorType;
+    uint8_t bDescriptorSubType;
+    uint8_t bUnitID;
+    uint8_t guidExtensionCode[16];
+    uint8_t bNumControls;
+    uint8_t bNrInPins;
+    // uint8_t baSourceID[];
+    uint8_t bControlSize;
+    // uint8_t bmControls[]
+    uint8_t iExtension;
+} __PACKED;
+
+#define VIDEO_SIZEOF_VC_EXTENSION_UNIT_DESC(p, n) (24 + p + n)
+
 struct video_cs_ep_vc_ep_descriptor {
     uint8_t bLength;
     uint8_t bDescriptorType;