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Cosmetics, single buffering, block when not running, etc...

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This commit is contained in:
Guido van Rossum 1991-11-04 14:29:27 +00:00
parent e4bddeae23
commit b51afcc5c4
1 changed files with 62 additions and 46 deletions
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50
Demo/sgi/video/video.py
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@ -19,8 +19,13 @@ def openspkr():
conf.setwidth(AL.SAMPLE_16) conf.setwidth(AL.SAMPLE_16)
conf.setchannels(AL.MONO) conf.setchannels(AL.MONO)
return al.openport('spkr','w',conf) return al.openport('spkr','w',conf)
def openvideo(name): def openvideo(name):
try:
f = open(name, 'r') f = open(name, 'r')
except:
sys.stderr.write(name + ': cannot open\n')
sys.exit(1)
line = f.readline() line = f.readline()
if not line: raise EndOfFile if not line: raise EndOfFile
if line[:4] = 'CMIF': line = f.readline() if line[:4] = 'CMIF': line = f.readline()
@ -28,6 +33,7 @@ def openvideo(name):
if len(x) = 3: w, h, pf = x if len(x) = 3: w, h, pf = x
else: w, h = x; pf = 2 else: w, h = x; pf = 2
return f, w, h, pf return f, w, h, pf
def loadframe(f,w,h,pf,af,spkr): def loadframe(f,w,h,pf,af,spkr):
line = f.readline() line = f.readline()
if line = '': if line = '':
@ -57,32 +63,37 @@ def loadframe(f,w,h,pf,af,spkr):
ct = time.millitimer() - epoch.epoch ct = time.millitimer() - epoch.epoch
if tijd > 0 and ct < tijd: if tijd > 0 and ct < tijd:
time.millisleep(tijd-ct) time.millisleep(tijd-ct)
swapbuffers() #swapbuffers()
return tijd return tijd
def playsound(af, spkr): def playsound(af, spkr):
nsamp = spkr.getfillable() nsamp = spkr.getfillable()
data = af.read(nsamp*2) data = af.read(nsamp*2)
spkr.writesamps(data) spkr.writesamps(data)
def main(): def main():
foreground()
if len(sys.argv) > 1: if len(sys.argv) > 1:
f, w, h, pf = openvideo(sys.argv[1]) filename = sys.argv[1]
else: else:
f, w, h, pf = openvideo('film.video') filename = 'film.video'
af = None f, w, h, pf = openvideo(filename)
spkr = None
if len(sys.argv) > 2: if len(sys.argv) > 2:
af = open(sys.argv[2], 'r') audiofilename = sys.argv[2]
af = open(audiofilename, 'r')
spkr = openspkr() spkr = openspkr()
if len(sys.argv) > 3: if len(sys.argv) > 3:
data = af.read(eval(sys.argv[3])) af.seek(eval(sys.argv[3]))
del data else:
foreground() af, spkr = None, None
prefsize(w,h) prefsize(w,h)
win = winopen('Video player') win = winopen(filename)
RGBmode() RGBmode()
doublebuffer() #doublebuffer()
gconfig() gconfig()
qdevice(ESCKEY) qdevice(ESCKEY)
qdevice(WINSHUT)
qdevice(WINQUIT)
running = 1 running = 1
epoch.epoch = time.millitimer() epoch.epoch = time.millitimer()
nframe = 0 nframe = 0
@ -97,15 +108,20 @@ def main():
running = 0 running = 0
t = time.millitimer() t = time.millitimer()
if tijd > 0: if tijd > 0:
print 'Recorded at ', nframe * 1000.0 / tijd, print 'Recorded at',
print 'frames/second (', tijd, 'ms total)' print 0.1 * int(nframe * 10000.0 / tijd),
print 'Played at', nframe * 1000.0 / (t-epoch.epoch), print 'frames/sec'
print 'frames/second' print 'Played', nframe, 'frames at',
print 0.1 * int(nframe * 10000.0 / (t-epoch.epoch)),
print 'frames/sec'
if af <> None: if af <> None:
playsound(af,spkr) playsound(af,spkr)
if qtest(): if not running or qtest():
if qread() = (ESCKEY,1): dev, val = qread()
if dev in (ESCKEY, WINSHUT, WINQUIT):
raise bye raise bye
elif dev = REDRAW:
reshapeviewport()
except bye: except bye:
pass pass