def show(file):
import gl, GL, DEVICE
jpegdata = open(file, 'r').read()
imgdata, width, height, bytesperpixel = decompress(jpegdata)
gl.foreground()
gl.prefsize(width, height)
win = gl.winopen(file)
if bytesperpixel == 1:
gl.cmode()
gl.pixmode(GL.PM_SIZE, 8)
gl.gconfig()
for i in range(256):
gl.mapcolor(i, i, i, i)
else:
gl.RGBmode()
gl.pixmode(GL.PM_SIZE, 32)
gl.gconfig()
gl.qdevice(DEVICE.REDRAW)
gl.qdevice(DEVICE.ESCKEY)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
gl.lrectwrite(0, 0, width - 1, height - 1, imgdata)
while 1:
dev, val = gl.qread()
if dev in (DEVICE.ESCKEY, DEVICE.WINSHUT, DEVICE.WINQUIT):
break
if dev == DEVICE.REDRAW:
gl.lrectwrite(0, 0, width - 1, height - 1, imgdata)
gl.winclose(win)
newjpegdata = compress(imgdata, width, height, bytesperpixel)
open('/tmp/j.jpg', 'w').write(newjpegdata)
def show(file):
import gl, GL, DEVICE
jpegdata = open(file, 'r').read()
imgdata, width, height, bytesperpixel = decompress(jpegdata)
gl.foreground()
gl.prefsize(width, height)
win = gl.winopen(file)
if bytesperpixel == 1:
gl.cmode()
gl.pixmode(GL.PM_SIZE, 8)
gl.gconfig()
for i in range(256):
gl.mapcolor(i, i, i, i)
else:
gl.RGBmode()
gl.pixmode(GL.PM_SIZE, 32)
gl.gconfig()
gl.qdevice(DEVICE.REDRAW)
gl.qdevice(DEVICE.ESCKEY)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
gl.lrectwrite(0, 0, width - 1, height - 1, imgdata)
while 1:
dev, val = gl.qread()
if dev in (DEVICE.ESCKEY, DEVICE.WINSHUT, DEVICE.WINQUIT):
break
if dev == DEVICE.REDRAW:
gl.lrectwrite(0, 0, width - 1, height - 1, imgdata)
gl.winclose(win)
newjpegdata = compress(imgdata, width, height, bytesperpixel)
open('/tmp/j.jpg', 'w').write(newjpegdata)
def install_colormap(self, map):
if not self.quiet:
sys.stderr.write(' Installing ' + `len(map)` + \
' entries...')
for irgb in map:
gl.mapcolor(irgb)
gl.gflush() # send the colormap changes to the X server
def install_colormap(self, map):
if not self.quiet:
sys.stderr.write(' Installing ' + `len(map)` + \
' entries...')
for irgb in map:
gl.mapcolor(irgb)
gl.gflush() # send the colormap changes to the X server
def clearto(self, r, g, b): if not self.colormapinited: raise CallError if gl.getdisplaymode() in (GET.DMRGB, GET.DMRGBDOUBLE): gl.RGBcolor(r, g, b) gl.clear() return index = self.color0[0] self.fixcolor0 = 1 gl.mapcolor(index, r, g, b) gl.writemask(0xffffffff) gl.clear() gl.gflush()
def clearto(self, r, g, b):
if not self.colormapinited: raise CallError
if gl.getdisplaymode() in (GET.DMRGB, GET.DMRGBDOUBLE):
gl.RGBcolor(r, g, b)
gl.clear()
return
index = self.color0[0]
self.fixcolor0 = 1
gl.mapcolor(index, r, g, b)
gl.writemask(0xffffffff)
gl.clear()
gl.gflush()
# Implement 'jpeg' interface using SGI's compression library
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()
# Classes to read and write CMIF video files.
# Classes to read and write CMIF video files.