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gvanrossumgvanrossum
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Created Vedit.py, the video editor. This uses the classes in Viewer.py.
Viewer.py in turn requires changes to VFile.py (unfortunately that file is now a complete mess...).
1 parent e1b4d7c commit 9ee7e15

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-144
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6 files changed

+1007
-144
lines changed

‎Demo/sgi/video/README

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -100,6 +100,10 @@ Vtime.py (unrelated to vtime!!!) Copy a video file,
100100
manipulating the time codes (e.g. faster/slower, or
101101
regenerate time codes, or drop frames too close apart)
102102

103+
Vedit.py interactive video editing program
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105+
Viewer.py two viewer classes used by Vedit
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103107

104108
The following are C programs, either for efficiency or because they
105109
need to link with a C library:

‎Demo/sgi/video/VFile.py

Lines changed: 139 additions & 128 deletions
Original file line numberDiff line numberDiff line change
@@ -52,7 +52,138 @@ def conv_rgb8(rgb,d1,d2):
5252
# xorigin, yorigin
5353
# fallback
5454

55-
class VinFile:
55+
56+
57+
# XXX it's a total mess now -- VFile is a new base class
58+
# XXX to support common functionality (e.g. showframe)
59+
60+
class VFile:
61+
62+
#
63+
# getinfo returns all info pertaining to a film. The returned tuple
64+
# can be passed to VoutFile.setinfo()
65+
#
66+
def getinfo(self):
67+
return (self.format, self.width, self.height, self.packfactor,\
68+
self.c0bits, self.c1bits, self.c2bits, self.offset, \
69+
self.chrompack)
70+
71+
# reopen() raises Error if the header is bad (which can only
72+
# happen if the file was written to since opened).
73+
74+
def reopen(self):
75+
self.fp.seek(0)
76+
x = self.initfp(self.fp, self.filename)
77+
78+
def setconvcolor(self):
79+
try:
80+
self.convcolor = eval('conv_'+self.format)
81+
except:
82+
raise Error, \
83+
self.filename + ': unknown colorsys ' + self.format
84+
85+
def showframe(self, data, chromdata):
86+
w, h, pf = self.width, self.height, self.packfactor
87+
if not self.colormapinited:
88+
self.initcolormap()
89+
factor = self.magnify
90+
if pf: factor = factor * pf
91+
if chromdata and not self.skipchrom:
92+
cp = self.chrompack
93+
cw = (w+cp-1)/cp
94+
ch = (h+cp-1)/cp
95+
gl.rectzoom(factor*cp, factor*cp)
96+
gl.pixmode(GL.PM_SIZE, 16)
97+
gl.writemask(self.mask - ((1 << self.c0bits) - 1))
98+
gl.lrectwrite(self.xorigin, self.yorigin, \
99+
self.xorigin + cw - 1, self.yorigin + ch - 1, \
100+
chromdata)
101+
#
102+
if pf:
103+
gl.writemask((1 << self.c0bits) - 1)
104+
gl.pixmode(GL.PM_SIZE, 8)
105+
gl.rectzoom(factor, factor)
106+
w = w/pf
107+
h = h/pf
108+
gl.lrectwrite(self.xorigin, self.yorigin, \
109+
self.xorigin + w - 1, self.yorigin + h - 1, data)
110+
111+
def initcolormap(self):
112+
self.colormapinited = 1
113+
if self.format == 'rgb':
114+
gl.RGBmode()
115+
gl.gconfig()
116+
gl.RGBcolor(200, 200, 200)
117+
gl.clear()
118+
return
119+
gl.cmode()
120+
gl.gconfig()
121+
self.skipchrom = 0
122+
if not self.quiet:
123+
sys.stderr.write('Initializing color map...')
124+
self.initcmap()
125+
if not self.quiet:
126+
sys.stderr.write(' Done.\n')
127+
if self.offset == 0:
128+
gl.color(0x800)
129+
gl.clear()
130+
self.mask = 0x7ff
131+
else:
132+
self.mask = 0xfff
133+
gl.clear()
134+
135+
136+
def initcmap(self):
137+
maxbits = gl.getgdesc(GL.GD_BITS_NORM_SNG_CMODE)
138+
if maxbits > 11:
139+
maxbits = 11
140+
c0bits, c1bits, c2bits = self.c0bits, self.c1bits, self.c2bits
141+
if c0bits+c1bits+c2bits > maxbits:
142+
if self.fallback and c0bits < maxbits:
143+
# Cannot display film in this mode, use mono
144+
self.skipchrom = 1
145+
c1bits = c2bits = 0
146+
self.convcolor = conv_grey
147+
else:
148+
raise Error, 'Sorry, '+`maxbits`+ \
149+
' bits max on this machine'
150+
maxc0 = 1 << c0bits
151+
maxc1 = 1 << c1bits
152+
maxc2 = 1 << c2bits
153+
if self.offset == 0 and maxbits == 11:
154+
offset = 2048
155+
else:
156+
offset = self.offset
157+
if maxbits <> 11:
158+
offset = offset & ((1<<maxbits)-1)
159+
#for i in range(512, MAXMAP):
160+
# gl.mapcolor(i, 0, 0, 0)
161+
#void = gl.qtest() # Should be gl.gflush()
162+
for c0 in range(maxc0):
163+
c0v = c0/float(maxc0-1)
164+
for c1 in range(maxc1):
165+
if maxc1 == 1:
166+
c1v = 0
167+
else:
168+
c1v = c1/float(maxc1-1)
169+
for c2 in range(maxc2):
170+
if maxc2 == 1:
171+
c2v = 0
172+
else:
173+
c2v = c2/float(maxc2-1)
174+
index = offset + c0 + (c1<<c0bits) + \
175+
(c2 << (c0bits+c1bits))
176+
rv, gv, bv = self.convcolor( \
177+
c0v, c1v, c2v)
178+
r, g, b = int(rv*255.0), \
179+
int(gv*255.0), int(bv*255.0)
180+
if index < MAXMAP:
181+
gl.mapcolor(index, r, g, b)
182+
void = gl.gflush()
183+
184+
185+
186+
class VinFile(VFile):
56187

57188
# init() and initfp() raise Error if the header is bad.
58189
# init() raises whatever open() raises if the file can't be opened.
@@ -122,11 +253,7 @@ def initfp(self, fp, filename):
122253
raise Error, \
123254
self.filename + ': bad 3.0 color info'
124255

125-
try:
126-
self.convcolor = eval('conv_'+self.format)
127-
except:
128-
raise Error, \
129-
self.filename + ': unknown colorsys ' + self.format
256+
self.setconvcolor()
130257
#
131258
line = self.fp.readline()
132259
try:
@@ -162,23 +289,6 @@ def close(self):
162289
self.fp.close()
163290
self.fp = None
164291

165-
166-
#
167-
# getinfo returns all info pertaining to a film. The returned tuple
168-
# can be passed to VoutFile.setinfo()
169-
#
170-
def getinfo(self):
171-
return (self.format, self.width, self.height, self.packfactor,\
172-
self.c0bits, self.c1bits, self.c2bits, self.offset, \
173-
self.chrompack)
174-
175-
# reopen() raises Error if the header is bad (which can only
176-
# happen if the file was written to since opened).
177-
178-
def reopen(self):
179-
self.fp.seek(0)
180-
x = self.initfp(self.fp, self.filename)
181-
182292
def rewind(self):
183293
if self.hascache:
184294
self.frameno = 0
@@ -270,105 +380,6 @@ def shownextframe(self):
270380
self.showframe(data, chromdata)
271381
return time
272382

273-
def showframe(self, data, chromdata):
274-
w, h, pf = self.width, self.height, self.packfactor
275-
if not self.colormapinited:
276-
self.initcolormap()
277-
factor = self.magnify
278-
if pf: factor = factor * pf
279-
if chromdata and not self.skipchrom:
280-
cp = self.chrompack
281-
cw = (w+cp-1)/cp
282-
ch = (h+cp-1)/cp
283-
gl.rectzoom(factor*cp, factor*cp)
284-
gl.pixmode(GL.PM_SIZE, 16)
285-
gl.writemask(self.mask - ((1 << self.c0bits) - 1))
286-
gl.lrectwrite(self.xorigin, self.yorigin, \
287-
self.xorigin + cw - 1, self.yorigin + ch - 1, \
288-
chromdata)
289-
#
290-
if pf:
291-
gl.writemask((1 << self.c0bits) - 1)
292-
gl.pixmode(GL.PM_SIZE, 8)
293-
gl.rectzoom(factor, factor)
294-
w = w/pf
295-
h = h/pf
296-
gl.lrectwrite(self.xorigin, self.yorigin, \
297-
self.xorigin + w - 1, self.yorigin + h - 1, data)
298-
299-
def initcolormap(self):
300-
self.colormapinited = 1
301-
if self.format == 'rgb':
302-
gl.RGBmode()
303-
gl.gconfig()
304-
gl.RGBcolor(200, 200, 200)
305-
gl.clear()
306-
return
307-
gl.cmode()
308-
gl.gconfig()
309-
self.skipchrom = 0
310-
if not self.quiet:
311-
sys.stderr.write('Initializing color map...')
312-
self.initcmap()
313-
if not self.quiet:
314-
sys.stderr.write(' Done.\n')
315-
if self.offset == 0:
316-
gl.color(0x800)
317-
gl.clear()
318-
self.mask = 0x7ff
319-
else:
320-
self.mask = 0xfff
321-
gl.clear()
322-
323-
324-
def initcmap(self):
325-
maxbits = gl.getgdesc(GL.GD_BITS_NORM_SNG_CMODE)
326-
if maxbits > 11:
327-
maxbits = 11
328-
c0bits, c1bits, c2bits = self.c0bits, self.c1bits, self.c2bits
329-
if c0bits+c1bits+c2bits > maxbits:
330-
if self.fallback and c0bits < maxbits:
331-
# Cannot display film in this mode, use mono
332-
self.skipchrom = 1
333-
c1bits = c2bits = 0
334-
self.convcolor = conv_grey
335-
else:
336-
raise Error, 'Sorry, '+`maxbits`+ \
337-
' bits max on this machine'
338-
maxc0 = 1 << c0bits
339-
maxc1 = 1 << c1bits
340-
maxc2 = 1 << c2bits
341-
if self.offset == 0 and maxbits == 11:
342-
offset = 2048
343-
else:
344-
offset = self.offset
345-
if maxbits <> 11:
346-
offset = offset & ((1<<maxbits)-1)
347-
#for i in range(512, MAXMAP):
348-
# gl.mapcolor(i, 0, 0, 0)
349-
#void = gl.qtest() # Should be gl.gflush()
350-
for c0 in range(maxc0):
351-
c0v = c0/float(maxc0-1)
352-
for c1 in range(maxc1):
353-
if maxc1 == 1:
354-
c1v = 0
355-
else:
356-
c1v = c1/float(maxc1-1)
357-
for c2 in range(maxc2):
358-
if maxc2 == 1:
359-
c2v = 0
360-
else:
361-
c2v = c2/float(maxc2-1)
362-
index = offset + c0 + (c1<<c0bits) + \
363-
(c2 << (c0bits+c1bits))
364-
rv, gv, bv = self.convcolor( \
365-
c0v, c1v, c2v)
366-
r, g, b = int(rv*255.0), \
367-
int(gv*255.0), int(bv*255.0)
368-
if index < MAXMAP:
369-
gl.mapcolor(index, r, g, b)
370-
void = gl.gflush()
371-
372383
#
373384
# A set of routines to grab images from windows
374385
#
@@ -417,7 +428,7 @@ def grab_hsv(w, h, pf):
417428
# Notably it will accept almost any garbage and write it to the video
418429
# output file
419430
#
420-
class VoutFile:
431+
class VoutFile(VFile):
421432
def init(self, filename):
422433
if filename == '-':
423434
return self.initfp(sys.stdout, filename)
@@ -434,21 +445,21 @@ def initfp(self, fp, filename):
434445
self.offset = 0
435446
self.chrompack = 0
436447
self.headerwritten = 0
448+
self.quiet = 0
449+
self.magnify = 1
450+
self.setconvcolor()
451+
self.xorigin = self.yorigin = 0
437452
return self
438453

439454
def close(self):
440455
self.fp.close()
441456
x = self.initfp(None, None)
442457

443-
def getinfo(self):
444-
return (self.format, self.width, self.height, self.packfactor,\
445-
self.c0bits, self.c1bits, self.c2bits, self.offset, \
446-
self.chrompack)
447-
448458
def setinfo(self, values):
449459
self.format, self.width, self.height, self.packfactor,\
450460
self.c0bits, self.c1bits, self.c2bits, self.offset, \
451461
self.chrompack = values
462+
self.setconvcolor()
452463

453464
def writeheader(self):
454465
self.headerwritten = 1

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