109 lines
2.0 KiB
Python
109 lines
2.0 KiB
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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def loadframe(f, w, h, pf):
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line = f.readline()
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if not line or line = '\n':
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raise EOFError
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x = eval(line[:-1])
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if type(x) = type(0):
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if pf: size = w*h*4
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else: size = w*h*pf
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else:
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time, size = x
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data = f.read(size)
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if len(data) <> size:
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raise EOFError
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if pf:
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windata = unpackrect(w/pf, h/pf, 1, data)
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rectzoom(pf, pf)
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lrectwrite(0, 0, w/pf-1, h/pf-1, windata)
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else:
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lrectwrite(0, 0, w-1, h-1, data)
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return time, data
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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.write('usage: vcopy infile outfile\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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def main():
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opts, args = getopt.getopt(sys.argv[1:], '')
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if len(args) <> 2:
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usage()
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[ifile, ofile] = args
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ifp = open(ifile, 'r')
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ofp = open(ofile, 'w')
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#
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line = ifp.readline()
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if line[:4] = 'CMIF':
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line = ifp.readline()
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x = eval(line[:-1])
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if len(x) = 3:
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w, h, pf = x
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else:
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w, h = x
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pf = 2
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if pf:
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w = (w/pf)*pf
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h = (h/pf)*pf
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#
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ofp.write('CMIF video 1.0\n')
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ofp.write(`w, h, pf` + '\n')
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#
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foreground()
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prefsize(w, h)
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wid = winopen(ifile + ' -> ' + ofile)
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RGBmode()
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gconfig()
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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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#
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help()
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#
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time, data = loadframe(ifp, w, h, pf)
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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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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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c = chr(val)
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if c = 'n':
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try:
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time, data = loadframe(ifp, w, h, pf)
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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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ringbell()
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elif c = 'w':
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ofp.write(`time, len(data)` + '\n')
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ofp.write(data)
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print 'Frame', iframe, 'written.'
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else:
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print 'Character', `c`, 'ignored'
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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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main()
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