V4LInput
Input object reading images from a V4L-capable device.
Inherits
See also
Summary
| V4LInput | Input object reading images from a V4L-capable device. |
| Constants | |
| Video modes | |
| Properties | |
| width | Get width of images. |
| height | Get height of images. |
| Functions | |
| V4LInput.new | Constructor. |
| inspect | Return string with information about this object. |
| close | Close the device. |
| read | Read an image. |
| status? | Indicates whether the device is still open. |
| set_sensivity | Change camera settings. |
V4LInput.new
def V4LInput.new( device = "/dev/video0", channel = 0, channel_norm = PAL, width = -1, height = -1, preferredColourSpace = '' )
Constructor.
Parameters
| device | Filename of input device. |
| channel | Channel number. |
| channel_norm | Video mode: PAL, NTSC, SECAM, or AUTO. |
| width | Preferred width (-1 for maximum width). |
| height | Preffered height (-1 for maximum height). |
| preferredColourSpace | Preferred colourspace. Colourspaces supported by HornetsEye are UBYTERGB, UYVY, YUY2, I420, and UBYTE. Specify ‘’ for automatic selection. |
set_sensivity
def set_sensivity( brightness, hue, colour, contrast )
Change camera settings. Note that some devices will not support all settings.
Parameters
| brightness | Brightness value between 0 and 65535 |
| hue | Hue value between 0 and 65535 |
| colour | Colour strength between 0 and 65535 |
| contrast | Contrast between 0 and 65535 |