#! /usr/bin/env python
# Decompress a jpeg or jpeggrey video file to rgb format
# Usage:
#
# Vunjpeg [infile [outfile]]
# Options:
#
# infile : input file (default film.video)
# outfile : output file (default out.video)
import sys
import jpeg
sys.path.append('/ufs/guido/src/video')
import VFile
# Main program -- mostly command line parsing
def main():
args = sys.argv[1:]
if len(args) < 1:
args.append('film.video')
if len(args) < 2:
args.append('out.video')
if len(args) > 2:
sys.stderr.write('usage: Vunjpeg [infile [outfile]]\n')
sys.exit(2)
sts = process(args[0], args[1])
sys.exit(sts)
import imageop
import imageop
def jpeg2rgb(img, width, height):
import cl, CL
import jpeg
data, width, height, bytesperpixel = jpeg.decompress(img)
if bytesperpixel <> 4: raise RuntimeError, 'not rgb jpeg'
return data
class Displayer(VideoParams):
# Initialize an instance.
# This does not need a current window
def __init__(self):
if no_gl:
raise RuntimeError, \
'no gl module available, so cannot display'
VideoParams.__init__(self)
# User-settable parameters
self.magnify = 1.0 # frame magnification factor
self.xorigin = 0 # x frame offset
self.yorigin = 0 # y frame offset (from bottom)
self.quiet = 0 # if set, don't print messages
self.fallback = 1 # allow fallback to grey
# Internal flags
self.colormapinited = 0 # must initialize window
self.skipchrom = 0 # don't skip chrominance data
self.color0 = None # magic, used by clearto()
self.fixcolor0 = 0 # don't need to fix color0
self.mustunpack = (not support_packed_pixels())
# setinfo() must reset some internal flags
def setinfo(self, values):
VideoParams.setinfo(self, values)
self.colormapinited = 0
self.skipchrom = 0
self.color0 = None
self.fixcolor0 = 0
# Show one frame, initializing the window if necessary
def showframe(self, data, chromdata):
self.showpartframe(data, chromdata, \
(0,0,self.width,self.height))
def showpartframe(self, data, chromdata, (x, y, w, h)):
pmsize = self.bpp
xpf, ypf = self.xpf, self.ypf
if self.upside_down:
gl.pixmode(GL.PM_TTOB, 1)
if self.mirror_image:
gl.pixmode(GL.PM_RTOL, 1)
if self.format in ('jpeg', 'jpeggrey'):
import jpeg
data, width, height, bytes = jpeg.decompress(data)
pmsize = bytes * 8
elif self.format == 'compress':
data = self.decompress(data)
pmsize = 32
elif self.format in ('mono', 'grey4'):
if self.mustunpack:
if self.format == 'mono':
data = imageop.mono2grey(data, \
w/xpf, h/ypf, 0x20, 0xdf)
elif self.format == 'grey4':
data = imageop.grey42grey(data, \
w/xpf, h/ypf)
pmsize = 8
elif self.format == 'grey2':
data = imageop.grey22grey(data, w / xpf, h / ypf)
pmsize = 8
if not self.colormapinited:
self.initcolormap()
if self.fixcolor0:
gl.mapcolor(self.color0)
self.fixcolor0 = 0
xfactor = yfactor = self.magnify
xfactor = xfactor * xpf
yfactor = yfactor * ypf
if chromdata and not self.skipchrom:
cp = self.chrompack
cx = int(x * xfactor * cp) + self.xorigin
cy = int(y * yfactor * cp) + self.yorigin
cw = (w + cp - 1) / cp
ch = (h + cp - 1) / cp
gl.rectzoom(xfactor * cp, yfactor * cp)
gl.pixmode(GL.PM_SIZE, 16)
gl.writemask(self.mask - ((1 << self.c0bits) - 1))
gl.lrectwrite(cx, cy, cx + cw - 1, cy + ch - 1, \
chromdata)
#
if pmsize < 32:
gl.writemask((1 << self.c0bits) - 1)
gl.pixmode(GL.PM_SIZE, pmsize)
w = w / xpf
h = h / ypf
x = x / xpf
y = y / ypf
gl.rectzoom(xfactor, yfactor)
x = int(x * xfactor) + self.xorigin
y = int(y * yfactor) + self.yorigin
gl.lrectwrite(x, y, x + w - 1, y + h - 1, data)
gl.gflush()
def jpeg2rgb(img, width, height): import jpeg data, width, height, bytesperpixel = jpeg.decompress(img) if bytesperpixel <> 4: raise RuntimeError, 'not rgb jpeg' return data
def jpeggrey2grey(img, width, height):
import jpeg
data, width, height, bytesperpixel = jpeg.decompress(img)
if bytesperpixel <> 1: raise RuntimeError, 'not greyscale jpeg'
return data
def jpeggrey2grey(img, width, height): import jpeg data, width, height, bytesperpixel = jpeg.decompress(img) if bytesperpixel <> 1: raise RuntimeError, 'not greyscale jpeg' return data
width, height = width/pf, height/pf
bytes = 1
else:
sys.stderr.write('Vunjpeg: input not in jpeg[grey] format\n')
return 1
info = (format,) + info[1:]
vout.setinfo(info)
vout.writeheader()
sts = 0
n = 0
try:
while 1:
t, data, cdata = vin.getnextframe()
n = n + 1
sys.stderr.write('Frame ' + `n` + '...')
data, w, h, b = jpeg.decompress(data)
if (w, h, b) <> (width, height, bytes):
sys.stderr.write('jpeg data has wrong size\n')
sts = 1
else:
vout.writeframe(t, data, None)
sys.stderr.write('\n')
except EOFError:
pass
return sts
# Don't forget to call the main program
main()
# Classes to read and write CMIF video files.
width, height = width / pf, height / pf
bytes = 1
else:
sys.stderr.write('Vunjpeg: input not in jpeg[grey] format\n')
return 1
info = (format, ) + info[1:]
vout.setinfo(info)
vout.writeheader()
sts = 0
n = 0
try:
while 1:
t, data, cdata = vin.getnextframe()
n = n + 1
sys.stderr.write('Frame ' + ` n ` + '...')
data, w, h, b = jpeg.decompress(data)
if (w, h, b) <> (width, height, bytes):
sys.stderr.write('jpeg data has wrong size\n')
sts = 1
else:
vout.writeframe(t, data, None)
sys.stderr.write('\n')
except EOFError:
pass
return sts
# Don't forget to call the main program
main()
#! /usr/bin/env python
# Decompress a jpeg or jpeggrey video file to rgb format
# Usage:
#
# Vunjpeg [infile [outfile]]
# Options:
#
# infile : input file (default film.video)
# outfile : output file (default out.video)
import sys
import jpeg
sys.path.append('/ufs/guido/src/video')
import VFile
# Main program -- mostly command line parsing
def main():
args = sys.argv[1:]
if len(args) < 1:
args.append('film.video')
if len(args) < 2:
args.append('out.video')
if len(args) > 2:
sys.stderr.write('usage: Vunjpeg [infile [outfile]]\n')
sys.exit(2)
sts = process(args[0], args[1])
sys.exit(sts)
# Copy one file to another
def process(infilename, outfilename):
