Lines Matching full:video

40 :ref:`Video Overlay <overlay>` or :ref:`Video Output Overlay <osd>`
47 destructive overlay copies captured video images into the video memory
48 of a graphics card. A non-destructive overlay blends video images into a
49 VGA signal or graphics into a video signal. *Video Output Overlays* are
57 To set the parameters for a *Video Output Overlay*, applications must
66 To set the parameters for a *non-destructive Video Overlay*,
72 For a *destructive Video Overlay* applications must additionally provide
76 destructive video overlay.
107       - This field is irrelevant to *non-destructive Video Overlays*. For
108 	*destructive Video Overlays* applications must provide a base
110 	multiple of two, four or eight bytes. For *Video Output Overlays*
133       - For *non-destructive Video Overlays* this field only defines a
139       - For *destructive Video Overlays* applications must initialize this
140 	field. For *Video Output Overlays* the driver must return a valid
166 	This field is irrelevant to *non-destructive Video Overlays*.
168 	For *destructive Video Overlays* both applications and drivers can
175 	For *Video Output Overlays* the driver must return a valid value.
177 	Video hardware may access padding bytes, therefore they must
193       - This field is irrelevant to *non-destructive Video Overlays*. For
194 	*destructive Video Overlays* applications must initialize this
195 	field. For *Video Output Overlays* the driver must return a valid
224 	non-destructive overlays. Video Output Overlays are in practice
229 	image pixels replace pixels in the VGA or video signal only where
254       - The device supports Source Chroma-keying. Video pixels with the
277       - If this flag is set for a video capture device, then the driver
281 	video capture driver (bttv) supports this flag. The use of this
286 	video output device, then the video output overlay window is
288 	to the size of the framebuffer. If it is cleared, then the video
289 	output overlay window is relative to the video output display.
303 	framebuffer pixels with video images. The blend function is:
304 	output = framebuffer pixel * alpha + video pixel * (1 - alpha).
308       - Use a global alpha value to blend the framebuffer with video
310 	+ video pixel * (255 - alpha)) / 255. The alpha value is
318 	framebuffer to clip or blend framebuffer pixels with video images,
320 	framebuffer pixel * (1 - alpha) + video pixel * alpha. The actual