From 1461fe7ab6e61c4ad59f54e308872c0bae09d609 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 3 Apr 2015 06:53:42 -0300 Subject: [PATCH] [media] uvcvideo: fix cropcap v4l2-compliance failure The v4l2-compliance tool expects that if VIDIOC_CROPCAP is defined, then VIDIOC_G_SELECTION for TGT_CROP_BOUNDS/DEFAULT is also defined (or COMPOSE in the case of an output device). In fact, all that a driver has to do to implement cropcap is to support those two targets since the v4l2 core will implement cropcap and fill in the pixelaspect to 1/1 by default. Implementing cropcap is only needed if the pixelaspect isn't square. So implement g_selection instead of cropcap in uvc to fix the v4l2-compliance failure. [Added blank lines for improved readability] Signed-off-by: Hans Verkuil Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_v4l2.c | 35 +++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index b6a09835e7aa..927d579e574a 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -1018,26 +1018,37 @@ static int uvc_ioctl_querymenu(struct file *file, void *fh, return uvc_query_v4l2_menu(chain, qm); } -static int uvc_ioctl_cropcap(struct file *file, void *fh, - struct v4l2_cropcap *ccap) +static int uvc_ioctl_g_selection(struct file *file, void *fh, + struct v4l2_selection *sel) { struct uvc_fh *handle = fh; struct uvc_streaming *stream = handle->stream; - if (ccap->type != stream->type) + if (sel->type != stream->type) return -EINVAL; - ccap->bounds.left = 0; - ccap->bounds.top = 0; + switch (sel->target) { + case V4L2_SEL_TGT_CROP_DEFAULT: + case V4L2_SEL_TGT_CROP_BOUNDS: + if (stream->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + break; + case V4L2_SEL_TGT_COMPOSE_DEFAULT: + case V4L2_SEL_TGT_COMPOSE_BOUNDS: + if (stream->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + break; + default: + return -EINVAL; + } + + sel->r.left = 0; + sel->r.top = 0; mutex_lock(&stream->mutex); - ccap->bounds.width = stream->cur_frame->wWidth; - ccap->bounds.height = stream->cur_frame->wHeight; + sel->r.width = stream->cur_frame->wWidth; + sel->r.height = stream->cur_frame->wHeight; mutex_unlock(&stream->mutex); - ccap->defrect = ccap->bounds; - - ccap->pixelaspect.numerator = 1; - ccap->pixelaspect.denominator = 1; return 0; } @@ -1452,7 +1463,7 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = { .vidioc_s_ext_ctrls = uvc_ioctl_s_ext_ctrls, .vidioc_try_ext_ctrls = uvc_ioctl_try_ext_ctrls, .vidioc_querymenu = uvc_ioctl_querymenu, - .vidioc_cropcap = uvc_ioctl_cropcap, + .vidioc_g_selection = uvc_ioctl_g_selection, .vidioc_g_parm = uvc_ioctl_g_parm, .vidioc_s_parm = uvc_ioctl_s_parm, .vidioc_enum_framesizes = uvc_ioctl_enum_framesizes, -- 2.20.1