diff options
author | Hans de Goede <hdegoede@redhat.com> | 2011-06-26 15:13:44 (GMT) |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 20:53:44 (GMT) |
commit | 4fba471e405f8f983085fd9f2fd9637bfc275f8f (patch) | |
tree | 0110147ec02ad39b74da40841ac84c6ea2cf1599 /drivers/media/video/pwc/pwc-v4l.c | |
parent | 6eba93573d2dda3f627006101c0652faeeaffde6 (diff) | |
download | linux-fsl-qoriq-4fba471e405f8f983085fd9f2fd9637bfc275f8f.tar.xz |
[media] pwc: Allow multiple opens
Allow multiple opens of the /dev/video node so that control panel apps
can be open to-gether with streaming apps.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
-rw-r--r-- | drivers/media/video/pwc/pwc-v4l.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c index 8bd0a68..834055b 100644 --- a/drivers/media/video/pwc/pwc-v4l.c +++ b/drivers/media/video/pwc/pwc-v4l.c @@ -284,13 +284,21 @@ static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f) } /* ioctl(VIDIOC_SET_FMT) */ -static int pwc_vidioc_set_fmt(struct pwc_device *pdev, struct v4l2_format *f) + +static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) { + struct pwc_device *pdev = video_drvdata(file); int ret, fps, snapshot, compression, pixelformat; if (!pdev->udev) return -ENODEV; + if (pdev->capt_file != NULL && + pdev->capt_file != file) + return -EBUSY; + + pdev->capt_file = file; + ret = pwc_vidioc_try_fmt(pdev, f); if (ret<0) return ret; @@ -678,18 +686,17 @@ static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format * return pwc_vidioc_try_fmt(pdev, f); } -static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) -{ - struct pwc_device *pdev = video_drvdata(file); - - return pwc_vidioc_set_fmt(pdev, f); -} - static int pwc_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) { struct pwc_device *pdev = video_drvdata(file); + if (pdev->capt_file != NULL && + pdev->capt_file != file) + return -EBUSY; + + pdev->capt_file = file; + return vb2_reqbufs(&pdev->vb_queue, rb); } @@ -707,6 +714,9 @@ static int pwc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) if (!pdev->udev) return -ENODEV; + if (pdev->capt_file != file) + return -EBUSY; + return vb2_qbuf(&pdev->vb_queue, buf); } @@ -717,6 +727,9 @@ static int pwc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) if (!pdev->udev) return -ENODEV; + if (pdev->capt_file != file) + return -EBUSY; + return vb2_dqbuf(&pdev->vb_queue, buf, file->f_flags & O_NONBLOCK); } @@ -727,6 +740,9 @@ static int pwc_streamon(struct file *file, void *fh, enum v4l2_buf_type i) if (!pdev->udev) return -ENODEV; + if (pdev->capt_file != file) + return -EBUSY; + return vb2_streamon(&pdev->vb_queue, i); } @@ -737,6 +753,9 @@ static int pwc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i) if (!pdev->udev) return -ENODEV; + if (pdev->capt_file != file) + return -EBUSY; + return vb2_streamoff(&pdev->vb_queue, i); } |