diff options
author | Hans Verkuil <hans.verkuil@cisco.com> | 2015-10-28 00:50:37 -0200 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-12-18 13:48:19 -0200 |
commit | df9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch) | |
tree | a6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/v4l2-core/videobuf2-v4l2.c | |
parent | ecc2fe20e63a21b7db23065ff061b66fbc08e08b (diff) |
[media] vb2: drop v4l2_format argument from queue_setup
The queue_setup callback has a void pointer that is just for V4L2
and is the pointer to the v4l2_format struct that was passed to
VIDIOC_CREATE_BUFS. The idea was that drivers would use the information
from that struct to buffers suitable for the requested format.
After the vb2 split series this pointer is now a void pointer,
which is ugly, and the reality is that all existing drivers will
effectively just look at the sizeimage field of v4l2_format.
To make this more generic the queue_setup callback is changed:
the void pointer is dropped, instead if the *num_planes argument
is 0, then use the current format size, if it is non-zero, then
it contains the number of requested planes and the sizes array
contains the requested sizes. If either is unsupported, then return
-EINVAL, otherwise use the requested size(s).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-v4l2.c')
-rw-r--r-- | drivers/media/v4l2-core/videobuf2-v4l2.c | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-v4l2.c b/drivers/media/v4l2-core/videobuf2-v4l2.c index 2d1e5b7d85a2..1b5c695f6c59 100644 --- a/drivers/media/v4l2-core/videobuf2-v4l2.c +++ b/drivers/media/v4l2-core/videobuf2-v4l2.c @@ -525,14 +525,52 @@ EXPORT_SYMBOL_GPL(vb2_prepare_buf); */ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create) { - int ret = vb2_verify_memory_type(q, create->memory, - create->format.type); + unsigned requested_planes = 1; + unsigned requested_sizes[VIDEO_MAX_PLANES]; + struct v4l2_format *f = &create->format; + int ret = vb2_verify_memory_type(q, create->memory, f->type); + unsigned i; create->index = q->num_buffers; if (create->count == 0) return ret != -EBUSY ? ret : 0; + + switch (f->type) { + case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: + case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: + requested_planes = f->fmt.pix_mp.num_planes; + if (requested_planes == 0 || + requested_planes > VIDEO_MAX_PLANES) + return -EINVAL; + for (i = 0; i < requested_planes; i++) + requested_sizes[i] = + f->fmt.pix_mp.plane_fmt[i].sizeimage; + break; + case V4L2_BUF_TYPE_VIDEO_CAPTURE: + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + requested_sizes[0] = f->fmt.pix.sizeimage; + break; + case V4L2_BUF_TYPE_VBI_CAPTURE: + case V4L2_BUF_TYPE_VBI_OUTPUT: + requested_sizes[0] = f->fmt.vbi.samples_per_line * + (f->fmt.vbi.count[0] + f->fmt.vbi.count[1]); + break; + case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + requested_sizes[0] = f->fmt.sliced.io_size; + break; + case V4L2_BUF_TYPE_SDR_CAPTURE: + case V4L2_BUF_TYPE_SDR_OUTPUT: + requested_sizes[0] = f->fmt.sdr.buffersize; + break; + default: + return -EINVAL; + } + for (i = 0; i < requested_planes; i++) + if (requested_sizes[i] == 0) + return -EINVAL; return ret ? ret : vb2_core_create_bufs(q, create->memory, - &create->count, &create->format); + &create->count, requested_planes, requested_sizes); } EXPORT_SYMBOL_GPL(vb2_create_bufs); @@ -1440,8 +1478,8 @@ int vb2_ioctl_create_bufs(struct file *file, void *priv, return res; if (vb2_queue_is_busy(vdev, file)) return -EBUSY; - res = vb2_core_create_bufs(vdev->queue, p->memory, &p->count, - &p->format); + + res = vb2_create_bufs(vdev->queue, p); if (res == 0) vdev->queue->owner = file->private_data; return res; |