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authorPaul Elder <paul.elder@ideasonboard.com>2018-08-28 02:45:46 -0400
committerPaul Elder <paul.elder@ideasonboard.com>2019-02-06 01:49:34 -0500
commitc4f79214e425ae26ec9c27cc0995122321631b87 (patch)
treefc724ca8ba68d073d69259a8e5e31a4894268058 /lib
parentbde4deb8803026ec69e11cd380d77bf5d33ee623 (diff)
uvc: reply with max frame rate in response to UVC_GET_MAX
Previously, the interval rate that would be selected and replied to the host in response to UVC_GET_MAX, UVC_GET_MIN, and UVC_GET_DEF were all the same and were the first interval rate. Assuming the interval rates are sorted in ascending order, this means that UVC_GET_MAX would always yield the minimum interval rate. Modify the call to uvc_fill_streaming_control such that UVC_GET_MAX will yield the maximum interval rate. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/uvc.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/uvc.c b/lib/uvc.c
index ab03f0e..975413a 100644
--- a/lib/uvc.c
+++ b/lib/uvc.c
@@ -8,6 +8,7 @@
*/
#include <errno.h>
+#include <limits.h>
#include <linux/usb/ch9.h>
#include <linux/usb/g_uvc.h>
#include <linux/usb/video.h>
@@ -176,8 +177,10 @@ uvc_events_process_streaming(struct uvc_device *dev, uint8_t req, uint8_t cs,
case UVC_GET_MIN:
case UVC_GET_MAX:
case UVC_GET_DEF:
- uvc_fill_streaming_control(dev, ctrl, req == UVC_GET_MAX ? -1 : 1,
- req == UVC_GET_MAX ? -1 : 1, 0);
+ if (req == UVC_GET_MAX)
+ uvc_fill_streaming_control(dev, ctrl, -1, -1, UINT_MAX);
+ else
+ uvc_fill_streaming_control(dev, ctrl, 1, 1, 0);
break;
case UVC_GET_RES: