Enabling more video controls: Contrast, Hue, Sharpness, etc

Follow peterbay's docs: https://github.com/peterbay/uvc-gadget/blob/master/doc/src/video-controls.md Buildroot Adding project-specific patches: https://buildroot.org/downloads/manual/manual.html#customize-patches
showmewebcam · Dec 8, 2020 · 8ba054b · 8ba054b
1 parent daa3dd7
commit 8ba054b
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diff --git a/configs/config b/configs/config
@@ -48,3 +48,4 @@ BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_PIWEBCAM=y
 BR2_PACKAGE_CAMERA_CONTROL=y
+BR2_LINUX_KERNEL_PATCH="$(BR2_EXTERNAL_PICAM_PATH)/patches/linux-custom"
diff --git a/patches/linux-custom/0001-linux-enable-more-video-controls.patch b/patches/linux-custom/0001-linux-enable-more-video-controls.patch
@@ -0,0 +1,15 @@
+diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c
+index fb0a892..5c850be 100644
+--- a/drivers/usb/gadget/function/f_uvc.c
++++ b/drivers/usb/gadget/function/f_uvc.c
+@@ -814,8 +814,8 @@ static struct usb_function_instance *uvc_alloc_inst(void)
+ 	pd->bSourceID			= 1;
+ 	pd->wMaxMultiplier		= cpu_to_le16(16*1024);
+ 	pd->bControlSize		= 2;
+-	pd->bmControls[0]		= 1;
+-	pd->bmControls[1]		= 0;
++	pd->bmControls[0]		= 255;
++	pd->bmControls[1]		= 6;
+ 	pd->iProcessing			= 0;
+
+ 	od = &opts->uvc_output_terminal;