diff options
Diffstat (limited to 'Demo/sgi')
| -rwxr-xr-x | Demo/sgi/video/VFile.py | 124 |
1 files changed, 92 insertions, 32 deletions
diff --git a/Demo/sgi/video/VFile.py b/Demo/sgi/video/VFile.py index 0bab8fa..a0a578d 100755 --- a/Demo/sgi/video/VFile.py +++ b/Demo/sgi/video/VFile.py @@ -5,9 +5,16 @@ import sys import gl import GL +import colorsys Error = 'VFile.Error' # Exception +def conv_grey(l,x,y): return colorsys.yiq_to_rgb(l,0,0) +def conv_yiq (y,i,q): return colorsys.yiq_to_rgb(y, (i-0.5)*1.2, q-0.5) +def conv_hls (l,h,s): return colorsys.hls_to_rgb(h,l,s) +def conv_hsv (v,h,s): return colorsys.hsv_to_rgb(h,s,v) +def conv_rgb (r,g,b): + raise Error, 'Attempt to make RGB colormap' # Class VinFile represents a video file used for input. # @@ -23,7 +30,9 @@ Error = 'VFile.Error' # Exception # filename # width, height # packfactor -# ybits, ibits, qbits, chrompack +# c0bits, c1bits, c2bits, chrompack +# offset +# format # # These writable data members provide additional parametrization: # xorigin, yorigin @@ -50,25 +59,57 @@ class VinFile(): self.version = 1.0 elif line = 'CMIF video 2.0\n': self.version = 2.0 + elif line = 'CMIF video 3.0\n': + self.version = 3.0 else: raise Error, self.filename + ': bad video format' # if self.version < 2.0: - self.ybits, self.ibits, self.qbits = 8, 0, 0 + self.c0bits, self.c1bits, self.c2bits = 8, 0, 0 self.chrompack = 0 - else: + self.offset = 0 + self.format = 'grey' + elif self.version = 2.0: line = self.fp.readline() try: - self.ybits, self.ibits, self.qbits, \ + self.c0bits, self.c1bits, self.c2bits, \ self.chrompack = eval(line[:-1]) + if self.c1bits or self.c2bits: + self.format = 'yiq' + else: + self.format = 'grey' + self.offset = 0 + except: + raise Error, self.filename + ': bad 2.0 color info' + elif self.version = 3.0: + line = self.fp.readline() + try: + self.format, rest = eval(line[:-1]) + if self.format = 'rgb': + pass + elif self.format = 'grey': + self.offset = 0 + self.c0bits = rest + self.c1bits = self.c2bits = \ + self.chrompack = 0 + else: + self.c0bits,self.c1bits,self.c2bits,\ + self.chrompack,self.offset = rest except: - raise Error, self.filename + ': bad color info' + raise Error, self.filename + ': bad 3.0 color info' + + try: + self.convcolor = eval('conv_'+self.format) + except: + raise Error, self.filename + ': unknown colorsys ' + self.format # line = self.fp.readline() try: x = eval(line[:-1]) if self.version > 1.0 or len(x) = 3: self.width, self.height, self.packfactor = x + if self.packfactor = 0: + self.format = 'rgb' else: sef.width, self.height = x self.packfactor = 2 @@ -112,7 +153,7 @@ class VinFile(): def skipnextframedata(self, (size, chromsize)): # Note that this won't raise EOFError for a partial frame. try: - self.fp.seek(size + chromsize, 1) # Relative seek + self.fp.seek(size + chromsize, 1) # Relatc1ve seek except: # Assume it's a pipe -- read the data to discard it dummy = self.fp.read(size) @@ -154,6 +195,8 @@ class VinFile(): def showframe(self, (data, chromdata)): w, h, pf = self.width, self.height, self.packfactor + if not self.colormapinited: + self.initcolormap() factor = self.magnify if pf: factor = factor * pf if chromdata: @@ -162,15 +205,13 @@ class VinFile(): ch = (h+cp-1)/cp gl.rectzoom(factor*cp, factor*cp) gl.pixmode(GL.PM_SIZE, 16) - gl.writemask(0x7ff - ((1 << self.ybits) - 1)) + gl.writemask(self.mask - ((1 << self.c0bits) - 1)) gl.lrectwrite(self.xorigin, self.yorigin, \ self.xorigin + cw - 1, self.yorigin + ch - 1, \ chromdata) # if pf: - if not self.colormapinited: - self.initcolormap() - gl.writemask((1 << self.ybits) - 1) + gl.writemask((1 << self.c0bits) - 1) gl.pixmode(GL.PM_SIZE, 8) gl.rectzoom(factor, factor) w = w/pf @@ -179,36 +220,47 @@ class VinFile(): self.xorigin + w - 1, self.yorigin + h - 1, data) def initcolormap(self): - initcmap(self.ybits, self.ibits, self.qbits, self.chrompack) - gl.color(0x800) - gl.clear() self.colormapinited = 1 + if self.format = 'rgb': + gl.RGBmode() + gl.gconfig() + return + initcmap(self.convcolor, self.c0bits, self.c1bits, self.c2bits, self.chrompack, self.offset) + if self.offset == 0: + gl.color(0x800) + self.mask = 0x7ff + else: + self.mask = 0xfff + gl.clear() -def initcmap(ybits, ibits, qbits, chrompack): - if ybits+ibits+qbits > 11: +def initcmap(convcolor, c0bits, c1bits, c2bits, chrompack, offset): + if c0bits+c1bits+c2bits > 11: raise Error, 'Sorry, 11 bits max' import colorsys - maxy = 1 << ybits - maxi = 1 << ibits - maxq = 1 << qbits - for i in range(2048, 4096-256): + maxc0 = 1 << c0bits + maxc1 = 1 << c1bits + maxc2 = 1 << c2bits + if offset = 0: + offset = 2048 + rng = (offset, 4192-256) + for i in range(rng): gl.mapcolor(i, 0, 255, 0) - for y in range(maxy): - yv = y/float(maxy-1) - for i in range(maxi): - if maxi = 1: - iv = 0 + for c0 in range(maxc0): + c0v = c0/float(maxc0-1) + for c1 in range(maxc1): + if maxc1 = 1: + c1v = 0 else: - iv = (i/float(maxi-1))-0.5 - for q in range(maxq): - if maxq = 1: - qv = 0 + c1v = c1/float(maxc1-1) + for c2 in range(maxc2): + if maxc2 = 1: + c2v = 0 else: - qv = (q/float(maxq-1))-0.5 - index = 2048 + y + \ - (i << ybits) + (q << (ybits+ibits)) - rv, gv, bv = colorsys.yiq_to_rgb(yv, iv, qv) + c2v = c2/float(maxc2-1) + index = offset + c0 + \ + (c1 << c0bits) + (c2 << (c0bits+c1bits)) + rv, gv, bv = convcolor(c0v, c1v, c2v) r, g, b = \ int(rv*255.0), int(gv*255.0), int(bv*255.0) if index < 4096 - 256: @@ -220,6 +272,12 @@ def test(): filename = 'film.video' if sys.argv[1:]: filename = sys.argv[1] vin = VinFile().init(filename) + print 'Version: ', vin.version + print 'Size: ', vin.width, 'x', vin.height + print 'Pack: ', vin.packfactor, vin.chrompack + print 'Bits: ', vin.c0bits, vin.c1bits, vin.c2bits + print 'Format: ', vin.format + print 'Offset: ', vin.offset gl.foreground() gl.prefsize(vin.width, vin.height) wid = gl.winopen('VFile.test: ' + filename) @@ -228,3 +286,5 @@ def test(): t = vin.shownextframe() except EOFError: pass + import time + time.sleep(5) |