Initial revision
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Guido van Rossum
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#! /ufs/guido/bin/sgi/python-405
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#! /ufs/guido/bin/sgi/python
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# Capture a CMIF movie using the Indigo video library and board
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# Usage:
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#
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# makemovie [-a] [-q queuesize] [-r n/d] [moviefile [audiofile]]
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# Options:
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#
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# -a : record audio as well
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# -q queuesize : set the capture queue size (default and max 16)
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# -r n/d : capture n out of every d frames (default 1/1)
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# XXX doesn't work yet
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#
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# moviefile : here goes the movie data (default film.video);
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# the format is documented in cmif-film.ms
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# audiofile : with -a, here goes the audio data (default film.aiff);
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# audio data is recorded in AIFF format, using the
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# input sampling rate, source and volume set by the
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# audio panel, in mono, 8 bits/sample
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# User interface:
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#
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# Start the application. Resize the window to the desired movie size.
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# Press the left mouse button to start recording, release it to end
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# recording. XXX For now, you must restart the program to record again.
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# You can't resize the window once you have made a recording.
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#
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# Press ESC or select the window manager Quit or Close window option
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# to quit. (You can do this without recording -- then the output
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# files are untouched.) XXX Don't press ESC before the program has
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# finished writing the output file -- it prints "Done writing" when it
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# is done.
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# XXX To do:
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#
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# add audio
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import sys
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sys.path.append('/ufs/guido/src/video')
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import sv, SV
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import VFile
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import gl, GL, DEVICE
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import al, AL
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import time
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import posix
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import getopt
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import string
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# Main program
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def main():
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QSIZE = 16
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TIME = 5
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audio = 0
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num, den = 1, 1
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opts, args = getopt.getopt(sys.argv[1:], 'aq:r:t:')
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for opt, arg in opts:
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if opt == '-a':
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audio = 1
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elif opt == '-q':
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QSIZE = string.atoi(arg)
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elif opt == '-r':
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[nstr, dstr] = string.splitfields(arg, '/')
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num, den = string.atoi(nstr), string.atoi(dstr)
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elif opt == '-t':
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TIME = string.atoi(arg)
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if args:
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filename = args[0]
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else:
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filename = 'film.video'
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if audio:
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if args[1:]:
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audiofilename = args[1]
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else:
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audiofilename = 'film.aiff'
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else:
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audiofilename = None
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gl.foreground()
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x, y = SV.PAL_XMAX / 4, SV.PAL_YMAX / 4
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print x, 'x', y
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gl.minsize(40, 30)
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gl.stepunit(8, 6)
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gl.maxsize(SV.PAL_XMAX, SV.PAL_YMAX)
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gl.keepaspect(SV.PAL_XMAX, SV.PAL_YMAX)
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win = gl.winopen(filename)
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x, y = gl.getsize()
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print x, 'x', y
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v = sv.OpenVideo()
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v.BindGLWindow(win, SV.IN_REPLACE)
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v.SetSize(x, y)
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v.BindGLWindow(win, SV.IN_REPLACE)
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v.SetCaptureFormat(SV.RGB_FRAMES)
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v.SetCaptureMode(SV.BLOCKING_CAPTURE)
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v.SetQueueSize(QSIZE)
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v.InitCapture()
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if v.GetQueueSize() != QSIZE:
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QSIZE = v.GetQueueSize()
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print 'Warning: QSIZE reduced to', QSIZE
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### v.SetSamplingRate(num, den) # XXX dumps core
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gl.qdevice(DEVICE.LEFTMOUSE)
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gl.qdevice(DEVICE.WINQUIT)
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gl.qdevice(DEVICE.WINSHUT)
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gl.qdevice(DEVICE.ESCKEY)
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print 'Press left mouse to start recording, release it to stop'
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recorded = 0
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while 1:
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dev, val = gl.qread()
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if dev == DEVICE.LEFTMOUSE:
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if val == 1:
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if recorded:
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# XXX This would dump core
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gl.ringbell()
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continue
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# Fix the window's size now
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gl.prefsize(x, y)
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gl.winconstraints()
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record(v, filename, audiofilename)
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recorded = 1
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print 'Wait until "Done writing" is printed!'
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elif dev == DEVICE.REDRAW:
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# Window resize (or move)
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if not recorded:
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x, y = gl.getsize()
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print x, 'x', y
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v.SetSize(x, y)
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v.BindGLWindow(win, SV.IN_REPLACE)
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elif dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
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# Quit
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if not recorded:
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# XXX Avoid core dump in EndCapture
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posix._exit(0)
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v.EndCapture()
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v.CloseVideo()
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gl.winclose(win)
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break
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# Record until the mouse is released (or any other GL event)
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# XXX audio not yet supported
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def record(v, filename, audiofilename):
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import thread
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x, y = gl.getsize()
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vout = VFile.VoutFile().init(filename)
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vout.format = 'rgb8'
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vout.width = x
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vout.height = y
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vout.writeheader()
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buffer = []
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thread.start_new_thread(saveframes, (vout, buffer))
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gl.wintitle('(rec) ' + filename)
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v.StartCapture()
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t0 = time.millitimer()
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while not gl.qtest():
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if v.GetCaptured() > 2:
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t = time.millitimer() - t0
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cd, st = v.GetCaptureData()
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data = cd.interleave(x, y)
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cd.UnlockCaptureData()
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buffer.append(data, t)
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else:
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time.millisleep(10)
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v.StopCapture()
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while v.GetCaptured() > 0:
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t = time.millitimer() - t0
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cd, st = v.GetCaptureData()
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data = cd.interleave(x, y)
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cd.UnlockCaptureData()
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buffer.append(data, t)
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buffer.append(None) # Sentinel
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gl.wintitle('(done) ' + filename)
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# Thread to save the frames to the file
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def saveframes(vout, buffer):
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while 1:
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if not buffer:
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time.millisleep(10)
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else:
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x = buffer[0]
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del buffer[0]
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if not x:
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break
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data, t = x
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vout.writeframe(t, data, None)
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del data
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sys.stderr.write('Done writing\n')
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vout.close()
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# Don't forget to call the main program
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main()
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