Hi Tomasz,
On Mon, Jan 23, 2012 at 05:51, Tomasz Stanislawski
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 success.
>
> Signed-off
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
wrote:
[snip]
> /* setup polling */
> struct pollfd fds[2] = {
>
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
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 o
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 is
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 t
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
another
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:
On Mon, Jan 23, 2012 at 10:57 AM, Mauro Carvalho Chehab
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
>>> patches,
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
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 escreve
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 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_EXPBU
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
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
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.
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
Signed-off-by: Kyungmin Park
---
drivers/media/video/v4
17 matches
Mail list logo
