gstreamer/sys/v4l2
Andy Wingo 3b5f988239 sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us.
Original commit message from CVS:
2007-05-30  Andy Wingo  <wingo@pobox.com>

* sys/v4l2/v4l2src_calls.h:
* sys/v4l2/v4l2src_calls.c (gst_v4l2src_fill_format_list): Store
the format list in the order that the driver gives it to us.
(gst_v4l2src_probe_caps_for_format_and_size)
(gst_v4l2src_probe_caps_for_format): New functions, fill GstCaps
based on the capabilities of the device.
(gst_v4l2src_grab_frame): Update for object variable renaming.
(gst_v4l2src_set_capture): Update to be strict in its parameters,
as in the set_caps below.
(gst_v4l2src_capture_init): Update for object variable renaming,
and reflow.
(gst_v4l2src_capture_start, gst_v4l2src_capture_stop)
(gst_v4l2src_capture_deinit): Update for object variable renaming.
(gst_v4l2src_update_fps, gst_v4l2src_set_fps)
(gst_v4l2src_get_fps): Remove; these functions don't have much
meaning outside of an atomic set_caps method.
(gst_v4l2src_buffer_new): Don't set buffer duration, it is not
known.

* sys/v4l2/gstv4l2tuner.c (gst_v4l2_tuner_set_channel): Remove
call to update_fps; not sure about this change.
(gst_v4l2_tuner_set_norm): Work around the fact that for the
moment we don't have an update_fps_func.

* sys/v4l2/gstv4l2src.h (struct _GstV4l2Src): Don't put v4l2
structures in the object, just store what we need. Do store the
probed caps of the device. Don't store the current frame rate.

* sys/v4l2/gstv4l2src.c (gst_v4l2src_init): Remove the
update_fps_function, for now. Update for new object variable
naming.
(gst_v4l2src_set_property, gst_v4l2src_get_property): Update for
new object variable naming.
(gst_v4l2src_v4l2fourcc_to_structure): Rename from ..._to_caps.
(gst_v4l2_structure_to_v4l2fourcc): Rename from ...caps_to_....
(gst_v4l2src_get_caps): Rework to probe the device for supported
frame sizes and frame rates.
(gst_v4l2src_set_caps): Rework to be strict in the given
parameters: if someone asks us to have a certain size and rate,
that is what we configure.
(gst_v4l2src_get_read): Update for object variable naming. Don't
leak buffers on short reads.
(gst_v4l2src_get_mmap): Update for object variable naming, and add
comments.
(gst_v4l2src_create): Update for object variable naming.
2007-05-30 14:40:53 +00:00
..
.gitignore add cvsignores 2003-09-11 19:17:02 +00:00
gstv4l2.c sys/v4l2/: Whitespace cleanups, dashify property-names. 2006-09-02 14:45:04 +00:00
gstv4l2colorbalance.c sys/v4l2/Makefile.am: Fix makefile, list libs in stack order. 2006-09-26 13:18:06 +00:00
gstv4l2colorbalance.h sys/v4l2/Makefile.am: Fix makefile, list libs in stack order. 2006-09-26 13:18:06 +00:00
gstv4l2object.c sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
gstv4l2object.h sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
gstv4l2src.c sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
gstv4l2src.h sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
gstv4l2tuner.c sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
gstv4l2tuner.h sys/v4l2/gstv4l2tuner.*: Fix _set_channel(): remove useless g_object_notify() for "channel" property that doesn't exi... 2006-10-18 11:04:09 +00:00
gstv4l2vidorient.c docs/plugins/: Add v4l2 plugin to the docs. 2006-09-26 14:17:54 +00:00
gstv4l2vidorient.h sys/v4l2/Makefile.am: Fix makefile, list libs in stack order. 2006-09-26 13:18:06 +00:00
gstv4l2xoverlay.c sys/v4l2/gstv4l2xoverlay.*: Fix build as per the patch in #338818 comment 36. 2006-10-09 07:01:19 +00:00
gstv4l2xoverlay.h sys/v4l2/gstv4l2xoverlay.*: Fix build as per the patch in #338818 comment 36. 2006-10-09 07:01:19 +00:00
Makefile.am Improved comments in ELEMENT_ERROR/WARNING and added "#if 0" to xoverlay code that is still not implemented. 2006-11-01 19:48:26 +00:00
README Fix level for multi-channel case. 2007-02-22 14:35:28 +00:00
v4l2_calls.c Printf format fixes; also add some missing quotes in translated strings. Fixes #416728 and #416727. 2007-03-10 12:30:48 +00:00
v4l2_calls.h sys/v4l2/Makefile.am: Fix makefile, list libs in stack order. 2006-09-26 13:18:06 +00:00
v4l2src_calls.c sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00
v4l2src_calls.h sys/v4l2/v4l2src_calls.*: Store the format list in the order that the driver gives it to us. 2007-05-30 14:40:53 +00:00

v4l2 plugins
============

The idea is a bit the same as the idea for the v4l1 plugins. We want
one generic v4l2element, and a few child objects (probably only two:
v4l2src and v4l2sink):

                /-------- v4l2src
v4l2element ---=
                \-------- v4l2sink

Both v4l2src and v4l2sink have a uncompressed and a compressed
recording-/playback-mode. Since this is all part of v4l2, the 'client'
of these elements, i.e. an application using v4l2src/v4l2sink, will
hardly notice this. All capsnego stuff is done inside, and the plugin
knows which formats are compressed and which are not.

Please note that the v4l1 and the v4l2 plugins are *not* compatible
concerning properties. Naming has been kept the same where possible,
but in some cases, properties had to be removed or added to make
full use of v4l2.

V4L2 API: http://linux.bytesex.org/v4l2/.
          http://v4l2spec.bytesex.org/
          /usr/include/linux/videodev2.h or

Kernel patches available from
          http://dl.bytesex.org/patches/.

Articles:
          http://lwn.net/Articles/203924/