linux-toradex.git/include/media/videobuf2-core.h, branch v3.4.11

[media] vb2: add vb2_get_unmapped_area in vb2 core

2011-11-03T20:29:13+00:00

no mmu system needs get_unmapped_area file operations to do mmap

Signed-off-by: Scott Jiang 
Signed-off-by: Marek Szyprowski 
Signed-off-by: Sylwester Nawrocki 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: vb2: add support for buffers of different sizes on a single queue

2011-11-03T20:28:29+00:00

The two recently added ioctl()s VIDIOC_CREATE_BUFS and VIDIOC_PREPARE_BUF
allow user-space applications to allocate video buffers of different
sizes and hand them over to the driver for fast switching between
different frame formats. This patch adds support for buffers of different
sizes on the same buffer-queue to vb2.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: vb2: prepare to support multi-size buffers

2011-11-03T20:28:28+00:00

In preparation for the forthcoming VIDIOC_CREATE_BUFS ioctl add a
"const struct v4l2_format *" argument to the .queue_setup() vb2
operation.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: add a new videobuf2 buffer state VB2_BUF_STATE_PREPARED

2011-11-03T20:28:23+00:00

This patch prepares for a better separation of the buffer preparation
stage.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] media: vb2: change queue initialization order

2011-09-06T18:07:20+00:00

This patch changes the order of operations during stream on call. Now the
buffers are first queued to the driver and then the start_streaming method
is called.

This resolves the most common case when the driver needs to know buffer
addresses to enable dma engine and start streaming. Additional parameter
to start_streaming method have been added to simplify drivers code. The
driver are now obliged to check if the number of queued buffers is high
enough to enable hardware streaming. If not - it can return an error. In
such case all the buffers that have been pre-queued are invalidated.

This patch also updates all videobuf2 clients to work properly with the
changed order of operations.

Signed-off-by: Marek Szyprowski 
Signed-off-by: Kyungmin Park 
CC: Pawel Osciak 
CC: Guennadi Liakhovetski 
CC: Hans Verkuil 
CC: Tomasz Stanislawski 
CC: Sylwester Nawrocki 
CC: Kamil Debski 
CC: Jonathan Corbet 
CC: Josh Wu 
CC: Hans de Goede 
CC: Paul Mundt 
Tested-by: Josh Wu 
Signed-off-by: Mauro Carvalho Chehab

[media] media: vb2: change plane sizes array to unsigned int[]

2011-09-06T18:04:27+00:00

Plane sizes array was declared as unsigned long[], while unsigned int is
more than enough for storing size of the video buffer. This patch reduces
the size of the array by definiting it as unsigned int[].

Reported-by: Laurent Pinchart 
Signed-off-by: Marek Szyprowski 
Signed-off-by: Kyungmin Park 
CC: Pawel Osciak 
Signed-off-by: Mauro Carvalho Chehab

[media] media: vb2: fix handling MAPPED buffer flag

2011-09-06T18:04:09+00:00

MAPPED flag was set for the buffer only if all it's planes were mapped and
relied on a simple mapping counter. This assumption is really bogus,
especially because the buffers may be mapped multiple times. Also the
meaning of this flag for muliplane buffers was not really useful. This
patch fixes this issue by setting the MAPPED flag for the buffer if any of
it's planes is in use (what means that has been mapped at least once), so
MAPPED flag can be used as 'in_use' indicator.

Reported-by: Hans Verkuil 
Signed-off-by: Marek Szyprowski 
Signed-off-by: Kyungmin Park 
CC: Pawel Osciak 
Tested-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] media: vb2: add a check if queued userptr buffer is large enough

2011-09-06T18:03:49+00:00

Videobuf2 accepted any userptr buffer without verifying if its size is
large enough to store the video data from the driver. The driver reports
the minimal size of video data once in queue_setup and expects that
videobuf2 provides buffers that match these requirements. This patch
adds the required check.

Reported-by: Laurent Pinchart 
Signed-off-by: Marek Szyprowski 
Signed-off-by: Kyungmin Park 
CC: Pawel Osciak 
Acked-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] Update Pawel Osciak's e-mail address

2011-03-22T07:55:05+00:00

Signed-off-by: Pawel Osciak 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l: videobuf2: Typo fix

2011-03-21T23:32:41+00:00

vb2_get_plane_payload() gets the bytesused field for a plane, it doesn't
set it.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab