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| author | Hans de Goede <hdegoede@redhat.com> | 2011-05-09 10:14:32 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2011-05-09 20:03:29 +0200 |
| commit | 1840fb7a9f87d3c94b9f812f338c5658af6f4281 (patch) | |
| tree | 6cb9fb0c74ff774e612e0e054129a07e4d4e8b44 /TODO | |
| parent | ff9a3b22c71a8cfd5074b1ae4089232976776555 (diff) | |
libv4l: rewrite src format selection algorithm
When multiple src formats are available for the best resolution match
we need to decide which one to use. The old algorithm was rather crude:
- it depended on the formats being sorted in a certain way in the
source formats array
- it did not really take bus bandwidth / fps into account other then
always preferring compressed formats except for resolutions of quarter
CIF and lower
- it did not differentiate between converting to YUV420 or to RGB32, while
some src formats are clearly a better match for one then for the other
This rewritten src format ranking algorithm takes all of the above into
account.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'TODO')
| -rw-r--r-- | TODO | 8 |
1 files changed, 3 insertions, 5 deletions
@@ -1,15 +1,13 @@ libv4l todo: ------------ +-libv4lconvert: v4lconvert_do_try_format should always prefer smaller then + requested resolutions over bigger then requested ones + -add support for setting / getting the number of read buffers -add code to v4l2_read to not return frames more then say 5 seconds old --add support for libv4l1 for non pure capture (combined capture and overlay) - devices so that atleast CGMBUF emulation (but no conversion, as thats - impossible for overlays) can be done, so that it will no longer be - necessary to implement CGMBUF in the kernel for each driver. - -take the possibility of pitch != width into account everywhere -make updating of parameters happen based on time elapsed rather then |