Hi Tomasz,
I like the direction in which you are going with the userspace
handling. This is almost exactly as I envisioned it. I have one
comment though:
On Thu, Jan 26, 2012 at 01:48, Tomasz Stanislawski
t.stanisl...@samsung.com wrote:
[snip]
/* setup polling */
struct pollfd
Hi Tomasz,
On Mon, Jan 23, 2012 at 05:51, Tomasz Stanislawski
t.stanisl...@samsung.com wrote:
This patch adds extension to V4L2 api. It allow to export a mmap buffer as
file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on
Hi Subash,
On Friday 27 January 2012 14:40:34 Subash Patel wrote:
On 01/24/2012 05:36 PM, Tomasz Stanislawski wrote:
On 01/24/2012 12:07 PM, Subash Patel wrote:
Instead of adding another IOCTL to query the file-descriptor in
user-space, why dont we extend the existing ones in v4l2/vb2?
Hello Tomasz,
Sorry for a late reply. Please find my answers inline.
On 01/24/2012 05:36 PM, Tomasz Stanislawski wrote:
Hi,
On 01/24/2012 12:07 PM, Subash Patel wrote:
Hello Thomasz,
Instead of adding another IOCTL to query the file-descriptor in
user-space, why dont we extend the existing
Hi Everyone,
I would like to present a simple test application used for testing
DMABUF support in V4L2. It is used to show how support for DMABUF may
look like in V4L2.
The test application creates a simple pipeline between two V4L2 devices.
One of them is a capture device. The second one
Hi Mauro,
On Monday 23 January 2012 17:42:45 Mauro Carvalho Chehab wrote:
Em 23-01-2012 13:56, Tomasz Stanislawski escreveu:
On 01/23/2012 04:04 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 12:42, Tomasz Stanislawski escreveu:
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em
Hello Thomasz,
Instead of adding another IOCTL to query the file-descriptor in
user-space, why dont we extend the existing ones in v4l2/vb2?
When the memory type set is V4L2_MEMORY_DMABUF, call to VIDIOC_REQBUFS
/VIDIOC_QUERYBUF from driver can take/return the fd. We will need to add
Hi,
On 01/24/2012 12:07 PM, Subash Patel wrote:
Hello Thomasz,
Instead of adding another IOCTL to query the file-descriptor in
user-space, why dont we extend the existing ones in v4l2/vb2?
When the memory type set is V4L2_MEMORY_DMABUF, call to VIDIOC_REQBUFS
/VIDIOC_QUERYBUF from driver can
This patch adds extension to V4L2 api. It allow to export a mmap buffer as file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on success.
Signed-off-by: Tomasz Stanislawski t.stanisl...@samsung.com
Signed-off-by: Kyungmin Park
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch adds extension to V4L2 api. It allow to export a mmap buffer as
file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file descriptor on success.
This requires more discussions.
Hi Mauro,
On Monday 23 January 2012 15:32:40 Mauro Carvalho Chehab wrote:
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch adds extension to V4L2 api. It allow to export a mmap buffer
as file descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer
offset used by mmap
Hi Mauro.
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch adds extension to V4L2 api. It allow to export a mmap buffer as file
descriptor. New ioctl VIDIOC_EXPBUF is added. It takes a buffer offset used by
mmap and return a file
Em 23-01-2012 12:42, Tomasz Stanislawski escreveu:
Hi Mauro.
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch adds extension to V4L2 api. It allow to export a mmap buffer as
file
descriptor. New ioctl VIDIOC_EXPBUF is added.
Hi Mauro,
On 01/23/2012 04:04 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 12:42, Tomasz Stanislawski escreveu:
Hi Mauro.
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch adds extension to V4L2 api. It allow to export a mmap
Em 23-01-2012 13:56, Tomasz Stanislawski escreveu:
Hi Mauro,
On 01/23/2012 04:04 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 12:42, Tomasz Stanislawski escreveu:
Hi Mauro.
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 11:51, Tomasz Stanislawski escreveu:
This patch
Em 23-01-2012 14:42, Mauro Carvalho Chehab escreveu:
Em 23-01-2012 13:56, Tomasz Stanislawski escreveu:
Hi Mauro,
On 01/23/2012 04:04 PM, Mauro Carvalho Chehab wrote:
Em 23-01-2012 12:42, Tomasz Stanislawski escreveu:
Hi Mauro.
On 01/23/2012 03:32 PM, Mauro Carvalho Chehab wrote:
Em
On Mon, Jan 23, 2012 at 10:57 AM, Mauro Carvalho Chehab
mche...@redhat.com wrote:
2) The userspace API changes to properly support for dma buffers.
If you're not ready to discuss (2), that's ok, but I'd like to follow
the discussions for it with care, not only for reviewing the actual
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