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Added reopen() to VinFile with semantics of old rewind(); rewind() now 

saves the cache.
Added getinfo() to VoutFile.
Fixed writing of 'grey' file header.
Added quiet parameter.
Adapted to new syntax.
This commit is contained in:
Guido van Rossum 1992-08-20 11:51:47 +00:00
parent dfb61fa2cb
commit 9a35d57ab2
1 changed files with 23 additions and 8 deletions
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31
Demo/sgi/video/VFile.py
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@ -32,6 +32,7 @@ def conv_rgb8(rgb,d1,d2):
# It has the following methods: # It has the following methods:
# init(filename) # init(filename)
# initfp(fp, filename) # initfp(fp, filename)
# reopen()
# rewind() # rewind()
# getnextframe() # getnextframe()
# skipnextframe() # skipnextframe()
@ -69,6 +70,7 @@ class VinFile:
self.skipchrom = 0 self.skipchrom = 0
self.fp = fp self.fp = fp
self.filename = filename self.filename = filename
self.quiet = 0
# #
line = self.fp.readline() line = self.fp.readline()
if line == 'CMIF video 1.0\n': if line == 'CMIF video 1.0\n':
@ -170,13 +172,19 @@ class VinFile:
self.c0bits, self.c1bits, self.c2bits, self.offset, \ self.c0bits, self.c1bits, self.c2bits, self.offset, \
self.chrompack) self.chrompack)
# rewind() raises Error if the header is bad (which can only # reopen() raises Error if the header is bad (which can only
# happen if the file was written to since opened). # happen if the file was written to since opened).
def rewind(self): def reopen(self):
self.fp.seek(0) self.fp.seek(0)
x = self.initfp(self.fp, self.filename) x = self.initfp(self.fp, self.filename)
def rewind(self):
if self.hascache:
self.frameno = 0
else:
self.reopen()
def position(self): def position(self):
if self.frameno >= len(self.framecache): if self.frameno >= len(self.framecache):
raise EOFError raise EOFError
@ -191,7 +199,7 @@ class VinFile:
data, chromdata = self.getnextframedata(size, chromsize) data, chromdata = self.getnextframedata(size, chromsize)
return time, data, chromdata return time, data, chromdata
def getnextframedata(self, (size, chromsize)): def getnextframedata(self, size, chromsize):
if self.hascache: if self.hascache:
self.position() self.position()
self.frameno = self.frameno + 1 self.frameno = self.frameno + 1
@ -210,7 +218,7 @@ class VinFile:
self.skipnextframedata(size, chromsize) self.skipnextframedata(size, chromsize)
return time return time
def skipnextframedata(self, (size, chromsize)): def skipnextframedata(self, size, chromsize):
if self.hascache: if self.hascache:
self.frameno = self.frameno + 1 self.frameno = self.frameno + 1
return return
@ -262,7 +270,7 @@ class VinFile:
self.showframe(data, chromdata) self.showframe(data, chromdata)
return time return time
def showframe(self, (data, chromdata)): def showframe(self, data, chromdata):
w, h, pf = self.width, self.height, self.packfactor w, h, pf = self.width, self.height, self.packfactor
if not self.colormapinited: if not self.colormapinited:
self.initcolormap() self.initcolormap()
@ -297,9 +305,11 @@ class VinFile:
gl.cmode() gl.cmode()
gl.gconfig() gl.gconfig()
self.skipchrom = 0 self.skipchrom = 0
sys.stderr.write('Initializing color map...') if not self.quiet:
sys.stderr.write('Initializing color map...')
self.initcmap() self.initcmap()
sys.stderr.write(' Done.\n') if not self.quiet:
sys.stderr.write(' Done.\n')
if self.offset == 0: if self.offset == 0:
gl.color(0x800) gl.color(0x800)
gl.clear() gl.clear()
@ -428,6 +438,11 @@ class VoutFile:
self.fp.close() self.fp.close()
x = self.initfp(None, None) x = self.initfp(None, None)
def getinfo(self):
return (self.format, self.width, self.height, self.packfactor,\
self.c0bits, self.c1bits, self.c2bits, self.offset, \
self.chrompack)
def setinfo(self, values): def setinfo(self, values):
self.format, self.width, self.height, self.packfactor,\ self.format, self.width, self.height, self.packfactor,\
self.c0bits, self.c1bits, self.c2bits, self.offset, \ self.c0bits, self.c1bits, self.c2bits, self.offset, \
@ -443,7 +458,7 @@ class VoutFile:
if self.format == 'rgb': if self.format == 'rgb':
data = ('rgb', 0) data = ('rgb', 0)
elif self.format == 'grey': elif self.format == 'grey':
data = ('grey', 0) data = ('grey', self.c0bits)
else: else:
data = (self.format, (self.c0bits, self.c1bits, \ data = (self.format, (self.c0bits, self.c1bits, \
self.c2bits, self.chrompack, self.offset)) self.c2bits, self.chrompack, self.offset))