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Vrec.py, Vrecb.py:
- call v.SetParam() after v.BindGLWindow() - turn of dithering in mono/grey mode - use prefposition to place the top left corner at (150, 150) (so that the video remains visible during recording) - default width is 256 Vcopy.py: correct typos; more verbose output. OldVcopy.py: new name for Jack's old grabbing Vcopy.py. Vstat.py: print values of all video parameters.
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Guido van Rossum
parent
c97d2eddee
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85f7bd5251
6 changed files with 201 additions and 12 deletions
148
Demo/sgi/video/OldVcopy.py
Executable file
148
Demo/sgi/video/OldVcopy.py
Executable file
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@ -0,0 +1,148 @@
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#! /ufs/guido/bin/sgi/python
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# Copy a video file, interactively, frame-by-frame.
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import sys
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import getopt
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from gl import *
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from DEVICE import *
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import VFile
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import VGrabber
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import string
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import imageop
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def report(time, iframe):
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print 'Frame', iframe, ': t =', time
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def usage():
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sys.stderr.write('usage: Vcopy [-t type] [-m treshold] [-a] infile outfile\n')
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sys.stderr.write('-t Convert to other type\n')
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sys.stderr.write('-a Automatic\n')
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sys.stderr.write('-m Convert grey to mono with treshold\n')
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sys.stderr.write('-d Convert grey to mono with dithering\n')
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sys.exit(2)
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def help():
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print 'Command summary:'
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print 'n get next image from input'
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print 'w write current image to output'
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class GrabbingVoutFile(VFile.VoutFile, VGrabber.VGrabber):
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pass
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def main():
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foreground()
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try:
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opts, args = getopt.getopt(sys.argv[1:], 't:am:d')
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except getopt.error, msg:
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print msg
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usage()
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if len(args) <> 2:
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usage()
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[ifile, ofile] = args
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print 'open film ', ifile
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ifilm = VFile.VinFile().init(ifile)
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print 'open output ', ofile
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ofilm = GrabbingVoutFile().init(ofile)
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ofilm.setinfo(ifilm.getinfo())
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use_grabber = 0
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continuous = 0
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tomono = 0
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tomonodither = 0
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for o, a in opts:
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if o == '-t':
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ofilm.format = a
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use_grabber = 1
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if o == '-a':
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continuous = 1
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if o == '-m':
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if ifilm.format <> 'grey':
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print '-m only supported for greyscale'
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sys.exit(1)
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tomono = 1
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treshold = string.atoi(a)
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ofilm.format = 'mono'
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if o == '-d':
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if ifilm.format <> 'grey':
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print '-m only supported for greyscale'
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sys.exit(1)
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tomonodither = 1
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ofilm.format = 'mono'
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ofilm.writeheader()
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#
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prefsize(ifilm.width, ifilm.height)
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w = winopen(ifile)
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qdevice(KEYBD)
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qdevice(ESCKEY)
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qdevice(WINQUIT)
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qdevice(WINSHUT)
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print 'qdevice calls done'
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#
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help()
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#
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time, data, cdata = ifilm.getnextframe()
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ifilm.showframe(data, cdata)
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iframe = 1
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report(time, iframe)
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#
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while 1:
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if continuous:
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dev = KEYBD
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else:
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dev, val = qread()
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if dev in (ESCKEY, WINQUIT, WINSHUT):
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break
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if dev == REDRAW:
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reshapeviewport()
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elif dev == KEYBD:
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if continuous:
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c = '0'
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else:
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c = chr(val)
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#XXX Debug
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if c == 'R':
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c3i(255,0,0)
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clear()
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if c == 'G':
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c3i(0,255,0)
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clear()
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if c == 'B':
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c3i(0,0,255)
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clear()
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if c == 'w' or continuous:
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if use_grabber:
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try:
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data, cdata = ofilm.grabframe()
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except VFile.Error, msg:
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print msg
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break
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if tomono:
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data = imageop.grey2mono(data, \
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ifilm.width, ifilm.height, \
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treshold)
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if tomonodither:
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data = imageop.dither2mono(data, \
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ifilm.width, ifilm.height)
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ofilm.writeframe(time, data, cdata)
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print 'Frame', iframe, 'written.'
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if c == 'n' or continuous:
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try:
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time,data,cdata = ifilm.getnextframe()
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ifilm.showframe(data, cdata)
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iframe = iframe+1
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report(time, iframe)
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except EOFError:
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print 'EOF'
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if continuous:
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break
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ringbell()
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elif dev == INPUTCHANGE:
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pass
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else:
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print '(dev, val) =', (dev, val)
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ofilm.close()
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main()
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@ -4,6 +4,11 @@ CMIF video tools
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This directory contains Python and C programs to manipulate files
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containing digitized video in the "CMIF video format".
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An introduction to using the basic tools is in the file "video.doc".
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A description of the video file format is in the file "cmif-film.ms"
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(troff/nroff -ms input).
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History
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-------
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@ -166,6 +166,7 @@ def process(infilename, outfilename):
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sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
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return 1
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print '=== input file ==='
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vin.printinfo()
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vout.setinfo(vin.getinfo())
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@ -187,7 +188,6 @@ def process(infilename, outfilename):
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if not ypf: ypf = vout.ypf
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newpf = (xpf, ypf)
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vout.setpf(newpf)
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scale = 1
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if newwidth and newheight:
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scale = 1
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@ -221,6 +221,7 @@ def process(infilename, outfilename):
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newwidth = newwidth / vout.xpf
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newheight = newheight / vout.ypf
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print '=== output file ==='
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vout.printinfo()
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vout.writeheader()
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@ -251,13 +252,14 @@ def process(infilename, outfilename):
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inwidth, inheight, newwidth, newheight)
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if flip:
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x0, y0 = 0, 0
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x1, y1 = newwidth-1, neheight-1
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x1, y1 = newwidth-1, newheight-1
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if vin.upside_down <> vout.upside_down:
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y1, y0 = y0, y1
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if vin.mirror_image <> vout.mirror_image:
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x1, x0 = x0, x1
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data = imageop.crop(data, vout.bpp/8, \
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newwidth, newheight, x0, y0, x1, y1)
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print 'Writing frame', nout
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vout.writeframe(tout, data, cdata)
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nout = nout + 1
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@ -20,7 +20,7 @@ def usage():
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print '-r rate : capture 1 out of every "rate" frames', \
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'(default and min 2)'
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print '-w width : initial window width', \
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'(default interactive placement)'
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'(default 256, use 0 for interactive placement)'
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print '-n : Don\'t write to file, only timing info'
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print '-d : drop fields if needed'
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print '-g bits : greyscale (2, 4 or 8 bits)'
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@ -184,7 +184,12 @@ def main():
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gl.keepaspect(x, y)
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gl.stepunit(8, 6)
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if width:
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gl.prefsize(width, width*3/4)
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height = width*3/4
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x1 = 150
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x2 = x1 + width-1
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y2 = 768-150
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y1 = y2-height+1
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gl.prefposition(x1, x2, y1, y2)
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win = gl.winopen(filename)
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if width:
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gl.maxsize(x, y)
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@ -201,12 +206,13 @@ def main():
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else:
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param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
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if mono or grey:
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param = param+[SV.COLOR, SV.MONO, SV.INPUT_BYPASS, 1]
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param = param+[SV.COLOR, SV.MONO, SV.DITHER, 0, \
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SV.INPUT_BYPASS, 1]
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else:
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param = param+[SV.COLOR, SV.DEFAULT_COLOR, SV.INPUT_BYPASS, 0]
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v.SetParam(param)
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v.BindGLWindow(win, SV.IN_REPLACE)
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v.SetParam(param)
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gl.qdevice(DEVICE.LEFTMOUSE)
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gl.qdevice(DEVICE.WINQUIT)
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@ -1,4 +1,3 @@
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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 in burst mode
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@ -41,7 +40,7 @@ def usage():
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print '-r rate : capture 1 out of every "rate" frames', \
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'(default and min 1)'
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print '-w width : initial window width', \
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'(default interactive placement)'
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'(default 256, use 0 for interactive placement)'
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print '-d : drop fields if needed'
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print '-g bits : greyscale (2, 4 or 8 bits)'
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print '-G : 2-bit greyscale dithered'
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@ -69,7 +68,7 @@ def main():
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format = SV.RGB8_FRAMES
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audio = 0
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rate = 1
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width = 0
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width = 256
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drop = 0
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mono = 0
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grey = 0
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@ -167,7 +166,12 @@ def main():
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gl.keepaspect(x, y)
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gl.stepunit(8, 6)
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if width:
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gl.prefsize(width, width*3/4)
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height = width*3/4
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x1 = 150
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x2 = x1 + width-1
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y2 = 768-150
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y1 = y2-height+1
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gl.prefposition(x1, x2, y1, y2)
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win = gl.winopen(filename)
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if width:
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gl.maxsize(x, y)
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@ -184,12 +188,13 @@ def main():
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else:
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param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
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if mono or grey:
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param = param+[SV.COLOR, SV.MONO, SV.INPUT_BYPASS, 1]
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param = param+[SV.COLOR, SV.MONO, SV.DITHER, 0, \
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SV.INPUT_BYPASS, 1]
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else:
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param = param+[SV.COLOR, SV.DEFAULT_COLOR, SV.INPUT_BYPASS, 0]
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v.SetParam(param)
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v.BindGLWindow(win, SV.IN_REPLACE)
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v.SetParam(param)
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gl.qdevice(DEVICE.LEFTMOUSE)
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gl.qdevice(DEVICE.WINQUIT)
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23
Demo/sgi/video/Vstat.py
Executable file
23
Demo/sgi/video/Vstat.py
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@ -0,0 +1,23 @@
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#! /ufs/guido/bin/sgi/python
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# Print the value of all video parameters
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import sys
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import sv, SV
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def main():
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v = sv.OpenVideo()
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for name in dir(SV):
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const = getattr(SV, name)
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if type(const) is type(0):
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sys.stdout.flush()
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params = [const, 0]
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try:
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v.GetParam(params)
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except sv.error, msg:
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## print name, msg
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continue
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print name, params
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main()
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