Lines Matching refs:overlay

36 - Capture and output overlay support
1011 Note: capture overlay support is implemented primarily to test the existing
1012 V4L2 capture overlay API. In practice few if any GPUs support such overlays
1019 This driver has support for a destructive capture overlay with bitmap clipping
1023 FIELD_ALTERNATE, then only the top or bottom fields will be copied to the overlay.
1025 The overlay only works if you are also capturing at that same time. This is a
1026 vivid limitation since it copies from a buffer to the overlay instead of
1027 filling the overlay directly. And if you are not capturing, then no buffers
1031 must be the same for the overlay to work. Otherwise VIDIOC_OVERLAY will return
1036 overlay of the second instance to use the framebuffer of the first, then
1038 the output overlay for the video output, turn on video looping and capture
1039 to see the blended framebuffer overlay that's being written to by the second
1053 	$ v4l2-ctl -d1 --overlay=1
1055 	$ v4l2-ctl -d2 --stream-mmap --overlay=1
1074 V4L2 output overlay API. Whether this API should be used for new drivers is
1077 This driver has support for an output overlay and is capable of:
1089 same for the overlay to work. Otherwise VIDIOC_OVERLAY will return an error.
1115 - Add ARGB888 overlay support: better testing of the alpha channel