Commit graph

117 commits

Author SHA1 Message Date
Nicolas Dufresne
25696203c3 v4l2rc: Add DV_TIMINGS query and locking
This adds support to DV_TIMINGS query and locking. The timing width and
height is then used as a preference.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Nicolas Dufresne
7b8fe18d06 v4l2object: Remove unused streaming member
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Nicolas Dufresne
1b21c1b15b v4l2: Subscribe source_change for the current input
When we subscribe for source-change event, we need to specify for which
input. Make sure we subscribe for the current input.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Nicolas Dufresne
293abe0675 v4l2: Add helper to query input status
This is a wrapper around ENUM_INPUT renamed for readability.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Nicolas Dufresne
ba3eddebc8 v4l2: Fix input/output index sign
This is an unsigned integer in the kernel API.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Nicolas Dufresne
4be9bf4085 v4l2object: Add event helpers
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/870>
2021-02-19 16:02:02 -05:00
Bing Song
b87db31fbe v4l2object: Need keep same transfer as input caps.
GST_VIDEO_TRANSFER_BT2020_12 and GST_VIDEO_TRANSFER_BT2020_10 will
be mapped to V4L2_XFER_FUNC_709. Need check input caps when map
V4L2_XFER_FUNC_709 back to GST_VIDEO_TRANSFER_BT2020_12 and
GST_VIDEO_TRANSFER_BT2020_10

Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/816
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/841>
2021-01-18 04:26:04 +00:00
Víctor Manuel Jáquez Leal
078560e70a v4l2: use GstV4l2Error in gst_v4l2_open()
gst_v4l2_open() is called by gst_v4l2_device_provider_probe_device(),
where the GstV4l2Object is created without an associated GstElement.

If gst_v4l2_open() fails, it raises a bus message, but without an
element, a precondition check fails on
gst_element_message_full_with_details() generating a crash if running
with fatal-warnings debug mode.

GstV4l2Error is a helper to raise error bus messages when it is
appropiated. This patch changes the direct bus messages to this
helper, and the elements will actually send the error message.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/694>
2020-08-11 01:44:17 +00:00
Haihua Hu
0a453cc4a4 v4l2: enhance v4l2 control interface to support string type CID
add string type cid support for v4l2 implementation

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/676>
2020-07-22 14:21:42 +08:00
Guillaume Desmottes
d1501f0952 v4l2: add alternate interlace mode
When using this mode each frame is split in two fields, each one being
transferred using its own buffer.
This is implemented with the V4L2_FIELD_ALTERNATE field format in v4l2.

This mode is enabled using a caps filter such as
"v4l2src ! video/x-raw\(format:Interlaced\)"

Here are the main changes related to this feature:

- use the INTERLACED caps feature with this mode.

- in this mode both fields of a given frame have the same sequence/offset
so adjust the algorithm checking for lost field/frame accordingly.

- double pool's min number of buffers as each frame requires 2 buffers.

Fix #504
Co-authored-by: Zeeshan Ali <zeenix@collabora.co.uk>
2020-03-25 12:42:12 +01:00
Guillaume Desmottes
8a69e26f16 v4l2: pass v4l2object to GST_V4L2_MIN_BUFFERS()
Will be used to double the number of buffers in alternate interlace
mode.
2020-03-25 12:14:41 +01:00
Seungha Yang
b0f4831481 v4l2bufferpool: Use unique name for v4l2bufferpool object
Assign unique sequence number to an object name for better debugging
2020-03-23 17:48:19 +00:00
Nicolas Dufresne
3b22a604b5 v4l2: Properly fix Android build
The previous patch did not even compile on any possible platform or C
standard. That commit also didn't have a proper commit message.

Android ships Linux with a different signature for ioctl. They first
released an ioctl with int as request type, and later "fixed" it by
adding an override with unsign, which is still not matching Linux and
BSD implementation which uses unsigned long int.
2018-11-21 18:58:38 -05:00
Xavier Claessens
0e2d0adac5 Fix ioctl() signature on Android 2018-11-21 16:11:02 -05:00
Nicolas Dufresne
1c729be537 v4l2object: Add a method to try and import buffers
This method will check if a buffer, base on it's video meta,
can be imported. It will also try and adapt the request stride
in case this is the only that miss-match.

https://bugzilla.gnome.org/show_bug.cgi?id=583890
2018-08-27 13:41:30 -04:00
Nicolas Dufresne
b12b8b0b22 v4l2src: Try to avoid TRY_FMT when camera is streaming
Some camera firmware crash is TRY_FMT is called during streaming. As a
side effect. This try and detect that the same format as currently
running is about to be tried, and skip renegotiation.

https://bugzilla.gnome.org/show_bug.cgi?id=796789
2018-07-11 19:05:00 -04:00
Seungha Yang
c4d13683f6 v4l2: Fix unknown type name ‘off_t’ error
Fix following build error

gstv4l2object.h:197:17: error: unknown type name ‘off_t’
       gint fd,  off_t offset);
                 ^

https://bugzilla.gnome.org/show_bug.cgi?id=794533
2018-03-27 13:46:58 -04:00
Nicolas Dufresne
7d4702e2fb v4l2: Fix support for 32bit mmap
https://bugzilla.gnome.org/show_bug.cgi?id=793103
2018-03-07 14:16:24 -05:00
Nicolas Dufresne
e575e4eda8 v4l2object: Use a debug object for tracing
This way we can pass the pad name instead of the element for tracing
which helps identifying which v4l2object is used withing M2M element
like decoder, encoder and transform. For the reference, pads are name
<parent-name>:<pad-name>.
2017-12-13 14:42:25 -05:00
Nicolas Dufresne
5a6fe4ed29 v4l2: Fix compilation without libv4l2 2017-07-24 16:45:40 -04:00
Nicolas Dufresne
33f508d508 v4l2object: Removed unused members 2017-07-24 14:27:05 -04:00
Nicolas Dufresne
31d8a1d929 v4l2: Add run-time environment to enable libv4l2
The library has started preventing a lot of interesting use cases,
like CREATE_BUFS, DMABuf, usage of TRY_FMT. As the libv4l2 is totally
inactive and not maintained, we decided to disable it. As a convenience
we added a run-time environment that let you enable it for testing.

  GST_V4L2_USE_LIBV4L2=1

This of course only works if you have enabled libv4l2 at build time.
2017-07-24 14:19:02 -04:00
Nicolas Dufresne
cae0b9a2d2 v4l2object: Introduce quirk to skip slow probes
skip_try_fmt_probes quirk is set, V4L2 object will not probe for
interlace-mode and colorimetry to avoid relying on try_fmt. This quirk
will be used by v4l2src to avoid desastrous startup time with slow
USB webcams.

When this quirk is enabled, caller will have to iterate over the
negotiated caps as it may contains unsupported formats. If the peer
didn't choose a specific interlace-mode, or colorimetry, the value
chosen by the driver is set into the caps. For this reason, when this
mode is enabled, gst_v4l2_object_set_format() will require writable
caps.

https://bugzilla.gnome.org/show_bug.cgi?id=785156
2017-07-21 15:29:10 -04:00
Nicolas Dufresne
9b9cba3798 v4l2: Make gst_v4l2_get_capabilities static
It's not used outside of v4l2_calls.c
2017-07-17 20:48:28 -04:00
Nicolas Dufresne
bec03858fa v4l2: Merge v4l2_calls.h into gstv4l2object.h
First step of a larger cleanup, all function from v4l2_calls are in fact
methods on GstV4l2Object. This split makes the code really confusing.
This also remove no longer unused macros.
2017-07-17 20:48:28 -04:00
Olivier Crête
dac03fa87c v4l2: Remove unused macro 2017-03-14 16:38:02 -04:00
Olivier Crête
75d2a57783 v4l2: Remove unused definitions 2017-03-14 16:35:25 -04:00
Edgard Lima
8635258046 Update Edgard Lima's email
https://bugzilla.gnome.org/show_bug.cgi?id=779230
2017-02-27 00:34:19 +00:00
Reynaldo H. Verdejo Pinochet
4b16b16aaf v4l2: use opened device caps instead of physical device ones
The same physical device can export multiple devices. In
this case, the capabilities field now contains a union of
all caps available from all exported V4L2 devices alongside
a V4L2_CAP_DEVICE_CAPS flag that should be used to decide
what capabilities to consider. In our case, we need the
ones from the exported device we are using.

https://bugzilla.gnome.org/show_bug.cgi?id=768195
2016-07-07 17:46:06 -04:00
Nicolas Dufresne
3b5cac3659 v4l2: Add an error return to _try/_set_format
This way one can easily ignore errors. Previously, error were always
posted ont he bus.

https://bugzilla.gnome.org/show_bug.cgi?id=766172
2016-06-07 17:02:43 -04:00
Philipp Zabel
cf29e6c0b7 v4l2: add gst_v4l2_object_probe_caps
Add a variant of gst_v4l2_object_get_caps that bypasses the probed_caps cache.

https://bugzilla.gnome.org/show_bug.cgi?id=733827
2015-11-25 14:32:28 -05:00
Thiago Santos
6cfa6c0da8 v4l2object: add gst_v4l2_object_try_format
Similar to set_format but it uses TRY_FMT instead of S_FMT

https://bugzilla.gnome.org/show_bug.cgi?id=682770
2015-03-13 18:47:55 +00:00
Aurélien Zanelli
600027a1ee v4l2bufferpool: fix import_userptr() in single-planar API when n_planes > 1
In the V4L2 single-planar API, when format is semi-planar/planar,
drivers expect the planes to be contiguous in memory.
So this commit change the way we handle semi-planar/planar format
(n_planes > 1) when we use the single-planar API (group->n_mem == 1).

To check that planes are contiguous and have expected size, ie: no
padding. We test the fact that plane 'i' start address + plane 'i'
expected size equals to plane 'i + 1' start address. If not, we return
in error.

Math are done in bufferpool rather than in allocator because the
former is aware of video info.

https://bugzilla.gnome.org/show_bug.cgi?id=738013
2015-02-25 14:25:01 -05:00
Nicolas Dufresne
43d5a523f1 Revert "v4l2: move vb_queue probing from allocator to v4l2object"
This reverts commit ec6b8b84af.
2014-11-24 10:36:30 -05:00
Benjamin Gaignard
ec6b8b84af v4l2: move vb_queue probing from allocator to v4l2object
The goal is to make those information available in v4l2_object
to be able later to select the best allocation method for the pool

https://bugzilla.gnome.org/show_bug.cgi?id=699382
2014-11-21 11:28:18 -05:00
Nicolas Dufresne
743c6a4475 v4l2: Merge min_buffers_for* variable into one
Reuse the same min_buffers variable for both capture and output, this
reduce the length of lines and make the code more readable.

https://bugzilla.gnome.org/show_bug.cgi?id=736072
2014-09-09 18:39:23 -04:00
Aurélien Zanelli
3afec4dd01 v4l2: set min_latency for output device according to required minimum number of buffers
Since we can get the minimum number of buffers needed by an output
device to work, use it to set min_latency which will determine how many
buffers are queued.

https://bugzilla.gnome.org/show_bug.cgi?id=736072
2014-09-09 18:39:23 -04:00
Nicolas Dufresne
e2fd7e274e v4l2bufferpool: Port to bufferpool flush_start/stop method
Port the buffer pool to use the new flush_start/flush_stop virtual
methods added to GstBufferPool.

https://bugzilla.gnome.org/show_bug.cgi?id=727611
2014-05-26 13:43:30 -04:00
Nicolas Dufresne
2e89f4ecff Revert "v4l2bufferpool: Port to bufferpool flush_start/stop method"
This reverts commit 2e0fb42e86.

Conflicts:
	sys/v4l2/gstv4l2allocator.c
	sys/v4l2/gstv4l2bufferpool.c
	sys/v4l2/gstv4l2videodec.c
2014-05-24 20:00:14 -04:00
Nicolas Dufresne
2e0fb42e86 v4l2bufferpool: Port to bufferpool flush_start/stop method 2014-05-24 15:38:53 -04:00
Nicolas Dufresne
077fcbcf15 v4l2: Cleanup M2M properties
M2M devices were sharing the same properties as src and sink. Most of
these made no sense. This patch reduces the number of propeties and
makes io-mode clearer by having capture-io-mode and output-io-mode. This
also accidently fixed a bug in gstv4l2transform io-mode code, where the
capture io-mode could not be set.

https://bugzilla.gnome.org/show_bug.cgi?id=729591
2014-05-15 19:06:52 -04:00
Nicolas Dufresne
82a806e63b v4l2: Replace miss-use of crop meta in favour of proper offset
This moves away from copying information and store everything inside
the GstVideoInfo structure. The alignement exposed by v4l2 api
is now handled using proper offset.
2014-05-08 15:56:37 -04:00
Nicolas Dufresne
3e4ed47956 v4l2object: Style fix 2014-05-08 15:56:37 -04:00
Nicolas Dufresne
92bdd596f2 v4l2: Add DMABUF and USERPTR importation 2014-05-08 15:56:36 -04:00
Nicolas Dufresne
eee61f39e5 v4l2: Introduce DMABUF_IMPORT IO mode 2014-05-08 15:56:36 -04:00
Nicolas Dufresne
5a61fb7f25 v4l2object: Set minimum buffers to 2
All the element requires at least two buffers. This is not used for RW mode.
2014-05-08 15:56:36 -04:00
Nicolas Dufresne
3393083497 v4l2object: Remove unused MAX_BUFFERS define 2014-05-08 15:56:36 -04:00
Nicolas Dufresne
0488984f82 v4l2: Move propose allocation to v4l2object 2014-05-08 15:56:36 -04:00
Nicolas Dufresne
d4c24cc52f v4l2transform: Setup cropping if needed 2014-05-08 15:56:36 -04:00
Nicolas Dufresne
0028de808b v4l2: Probe for CREATE_BUFS in order to correctly set pool min/max
In order to correctly set the pool min/max, we need to probe for CREATE_BUFS
ioctl. This can be done as soon as the format has been negotiated using a
count of 0.
2014-05-08 15:56:35 -04:00