diff options
Diffstat (limited to 'Lib/plat-irix6/jpeg.py')
| -rw-r--r-- | Lib/plat-irix6/jpeg.py | 176 |
1 files changed, 88 insertions, 88 deletions
diff --git a/Lib/plat-irix6/jpeg.py b/Lib/plat-irix6/jpeg.py index 2354f40..0b52031 100644 --- a/Lib/plat-irix6/jpeg.py +++ b/Lib/plat-irix6/jpeg.py @@ -6,7 +6,7 @@ # XXX the resulting file causes weirdness. class error(Exception): - pass + pass options = {'quality': 75, 'optimize': 0, 'smooth': 0, 'forcegray': 0} @@ -14,98 +14,98 @@ comp = None decomp = None def compress(imgdata, width, height, bytesperpixel): - global comp - import cl - if comp is None: comp = cl.OpenCompressor(cl.JPEG) - if bytesperpixel == 1: - format = cl.GRAYSCALE - elif bytesperpixel == 4: - format = cl.RGBX - if options['forcegray']: - iformat = cl.GRAYSCALE - else: - iformat = cl.YUV - # XXX How to support 'optimize'? - params = [cl.IMAGE_WIDTH, width, cl.IMAGE_HEIGHT, height, - cl.ORIGINAL_FORMAT, format, - cl.ORIENTATION, cl.BOTTOM_UP, - cl.QUALITY_FACTOR, options['quality'], - cl.INTERNAL_FORMAT, iformat, - ] - comp.SetParams(params) - jpegdata = comp.Compress(1, imgdata) - return jpegdata + global comp + import cl + if comp is None: comp = cl.OpenCompressor(cl.JPEG) + if bytesperpixel == 1: + format = cl.GRAYSCALE + elif bytesperpixel == 4: + format = cl.RGBX + if options['forcegray']: + iformat = cl.GRAYSCALE + else: + iformat = cl.YUV + # XXX How to support 'optimize'? + params = [cl.IMAGE_WIDTH, width, cl.IMAGE_HEIGHT, height, + cl.ORIGINAL_FORMAT, format, + cl.ORIENTATION, cl.BOTTOM_UP, + cl.QUALITY_FACTOR, options['quality'], + cl.INTERNAL_FORMAT, iformat, + ] + comp.SetParams(params) + jpegdata = comp.Compress(1, imgdata) + return jpegdata def decompress(jpegdata): - global decomp - import cl - if decomp is None: decomp = cl.OpenDecompressor(cl.JPEG) - headersize = decomp.ReadHeader(jpegdata) - params = [cl.IMAGE_WIDTH, 0, cl.IMAGE_HEIGHT, 0, cl.INTERNAL_FORMAT, 0] - decomp.GetParams(params) - width, height, format = params[1], params[3], params[5] - if format == cl.GRAYSCALE or options['forcegray']: - format = cl.GRAYSCALE - bytesperpixel = 1 - else: - format = cl.RGBX - bytesperpixel = 4 - # XXX How to support 'smooth'? - params = [cl.ORIGINAL_FORMAT, format, - cl.ORIENTATION, cl.BOTTOM_UP, - cl.FRAME_BUFFER_SIZE, width*height*bytesperpixel] - decomp.SetParams(params) - imgdata = decomp.Decompress(1, jpegdata) - return imgdata, width, height, bytesperpixel + global decomp + import cl + if decomp is None: decomp = cl.OpenDecompressor(cl.JPEG) + headersize = decomp.ReadHeader(jpegdata) + params = [cl.IMAGE_WIDTH, 0, cl.IMAGE_HEIGHT, 0, cl.INTERNAL_FORMAT, 0] + decomp.GetParams(params) + width, height, format = params[1], params[3], params[5] + if format == cl.GRAYSCALE or options['forcegray']: + format = cl.GRAYSCALE + bytesperpixel = 1 + else: + format = cl.RGBX + bytesperpixel = 4 + # XXX How to support 'smooth'? + params = [cl.ORIGINAL_FORMAT, format, + cl.ORIENTATION, cl.BOTTOM_UP, + cl.FRAME_BUFFER_SIZE, width*height*bytesperpixel] + decomp.SetParams(params) + imgdata = decomp.Decompress(1, jpegdata) + return imgdata, width, height, bytesperpixel def setoption(name, value): - if type(value) is not type(0): - raise TypeError, 'jpeg.setoption: numeric options only' - if name == 'forcegrey': - name = 'forcegray' - if not options.has_key(name): - raise KeyError, 'jpeg.setoption: unknown option name' - options[name] = int(value) + if type(value) is not type(0): + raise TypeError, 'jpeg.setoption: numeric options only' + if name == 'forcegrey': + name = 'forcegray' + if not options.has_key(name): + raise KeyError, 'jpeg.setoption: unknown option name' + options[name] = int(value) def test(): - import sys - if sys.argv[1:2] == ['-g']: - del sys.argv[1] - setoption('forcegray', 1) - if not sys.argv[1:]: - sys.argv.append('/usr/local/images/data/jpg/asterix.jpg') - for file in sys.argv[1:]: - show(file) + import sys + if sys.argv[1:2] == ['-g']: + del sys.argv[1] + setoption('forcegray', 1) + if not sys.argv[1:]: + sys.argv.append('/usr/local/images/data/jpg/asterix.jpg') + for file in sys.argv[1:]: + show(file) 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) - # Now test the compression and write the result to a fixed filename - newjpegdata = compress(imgdata, width, height, bytesperpixel) - open('/tmp/j.jpg', 'w').write(newjpegdata) + 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) + # Now test the compression and write the result to a fixed filename + newjpegdata = compress(imgdata, width, height, bytesperpixel) + open('/tmp/j.jpg', 'w').write(newjpegdata) |