Changes for supporting monochrome and greyscale video (not yet fully
functional)
diff --git a/Demo/sgi/video/LiveVideoIn.py b/Demo/sgi/video/LiveVideoIn.py
index 3fd8093..d0ea858 100755
--- a/Demo/sgi/video/LiveVideoIn.py
+++ b/Demo/sgi/video/LiveVideoIn.py
@@ -33,7 +33,7 @@
# Note that the data has to be cropped unless vw and vh are
# just right for the video board (vw:vh == 4:3 and vh even).
- def init(self, pktmax, vw, vh):
+ def init(self, pktmax, vw, vh, type):
if not have_video:
raise RuntimeError, 'no video available'
if vw % 4 != 0:
@@ -43,6 +43,14 @@
if realvw < vw:
realvw = vw
self.realwidth, self.realheight = v.QuerySize(realvw, vh)
+ if not type in ('rgb8', 'grey', 'mono'):
+ raise 'Incorrent video data type'
+ self.type = type
+ if type in ('grey', 'mono'):
+ v.SetParam([SV.COLOR, SV.MONO, SV.INPUT_BYPASS, 1])
+ else:
+ v.SetParam([SV.COLOR, SV.DEFAULT_COLOR, \
+ SV.INPUT_BYPASS, 0])
# Initialize capture
(mode, self.realwidth, self.realheight, qsize, rate) = \
v.InitContinuousCapture(SV.RGB8_FRAMES, \
@@ -70,7 +78,7 @@
def resizevideo(self, vw, vh):
self.close()
- self = self.init(self.pktmax, vw, vh)
+ self = self.init(self.pktmax, vw, vh, self.type)
# Remove an instance.
# This turns off continuous capture.
@@ -105,8 +113,14 @@
self.x1, self.y1)
self.lpos = 0
self.dataoffset = 0
+ if self.type == 'mono':
+ self.data = imageop.dither2mono(self.data, \
+ self.width, self.height)
data = self.data[self.dataoffset:self.dataoffset+self.pktsize]
lpos = self.lpos
self.dataoffset = self.dataoffset + self.pktsize
- self.lpos = self.lpos + self.lpp
+ if self.type == 'mono':
+ self.lpos = self.lpos + self.lpp*8
+ else:
+ self.lpos = self.lpos + self.lpp
return lpos, data