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authorHans Verkuil <hans.verkuil@cisco.com>2015-10-28 00:50:37 -0200
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-12-18 13:48:19 -0200
commitdf9ecb0cad14b952a2865f8b3af86b2bbadfab45 (patch)
treea6a9501e8fc5a3a59e6e3fbf54e8e5c5559aaf23 /drivers/media/v4l2-core/videobuf2-v4l2.c
parentecc2fe20e63a21b7db23065ff061b66fbc08e08b (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.c48
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;

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