Initial revision

1 files changed, 81 insertions, 0 deletions

diff --git a/Demo/sgi/sv/rgbgrab.py b/Demo/sgi/sv/rgbgrab.py
new file mode 100755
index 0000000..8013a53
--- /dev/null
+++ b/Demo/sgi/sv/rgbgrab.py
@@ -0,0 +1,81 @@
+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()