mirror of https://github.com/python/cpython
82 lines
1.9 KiB
Python
82 lines
1.9 KiB
Python
|
import sys
|
||
|
|
import sv, SV
|
||
|
|
import gl, GL, DEVICE
|
||
|
|
import time
|
||
|
|
|
||
|
|
def main():
|
||
|
|
v = sv.OpenVideo()
|
||
|
|
# Determine maximum window size based on signal standard
|
||
|
|
param = [SV.BROADCAST, 0]
|
||
|
|
v.GetParam(param)
|
||
|
|
if param[1] == SV.PAL:
|
||
|
|
width = SV.PAL_XMAX
|
||
|
|
height = SV.PAL_YMAX
|
||
|
|
elif param[1] == SV.NTSC:
|
||
|
|
width = SV.NTSC_XMAX
|
||
|
|
height = SV.NTSC_YMAX
|
||
|
|
else:
|
||
|
|
print 'Unknown video standard', param[1]
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
# Initially all windows are half size
|
||
|
|
grabwidth, grabheight = width/2, height/2
|
||
|
|
|
||
|
|
# Open still window
|
||
|
|
gl.foreground()
|
||
|
|
gl.prefsize(grabwidth, grabheight)
|
||
|
|
still_win = gl.winopen('Grabbed frame')
|
||
|
|
gl.keepaspect(width, height)
|
||
|
|
gl.maxsize(width, height)
|
||
|
|
gl.winconstraints()
|
||
|
|
gl.RGBmode()
|
||
|
|
gl.gconfig()
|
||
|
|
gl.clear()
|
||
|
|
gl.pixmode(GL.PM_SIZE, 8)
|
||
|
|
|
||
|
|
# Open live window
|
||
|
|
gl.foreground()
|
||
|
|
gl.prefsize(grabwidth, grabheight)
|
||
|
|
live_win = gl.winopen('Live video')
|
||
|
|
gl.keepaspect(width, height)
|
||
|
|
gl.maxsize(width, height)
|
||
|
|
gl.winconstraints()
|
||
|
|
|
||
|
|
# Bind live video
|
||
|
|
v.SetSize(gl.getsize())
|
||
|
|
v.BindGLWindow(live_win, SV.IN_REPLACE)
|
||
|
|
|
||
|
|
print 'Use leftmouse to grab frame'
|
||
|
|
|
||
|
|
gl.qdevice(DEVICE.LEFTMOUSE)
|
||
|
|
gl.qdevice(DEVICE.WINQUIT)
|
||
|
|
gl.qdevice(DEVICE.WINSHUT)
|
||
|
|
gl.qdevice(DEVICE.ESCKEY)
|
||
|
|
frame = None
|
||
|
|
while 1:
|
||
|
|
dev, val = gl.qread()
|
||
|
|
if dev == DEVICE.LEFTMOUSE and val == 0:
|
||
|
|
w, h, fields = v.CaptureOneFrame(SV.RGB8_FRAMES, \
|
||
|
|
grabwidth, grabheight)
|
||
|
|
frame = sv.InterleaveFields(1, fields, w, h)
|
||
|
|
gl.winset(still_win)
|
||
|
|
gl.lrectwrite(0, 0, w - 1, h - 1, frame)
|
||
|
|
gl.winset(live_win)
|
||
|
|
if dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
|
||
|
|
v.CloseVideo()
|
||
|
|
gl.winclose(live_win)
|
||
|
|
gl.winclose(still_win)
|
||
|
|
break
|
||
|
|
if dev == DEVICE.REDRAW and val == still_win:
|
||
|
|
gl.winset(still_win)
|
||
|
|
gl.reshapeviewport()
|
||
|
|
gl.clear()
|
||
|
|
grabwidth, grabheight = gl.getsize()
|
||
|
|
if frame:
|
||
|
|
gl.lrectwrite(0, 0, w - 1, h - 1, frame)
|
||
|
|
gl.winset(live_win)
|
||
|
|
if dev == DEVICE.REDRAW and val == live_win:
|
||
|
|
v.SetSize(gl.getsize())
|
||
|
|
v.BindGLWindow(live_win, SV.IN_REPLACE)
|
||
|
|
|
||
|
|
main()
|