ilusha/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython synced 2026-09-29 08:45:29 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

New options: -m mag, and -F.

Browse source 
Also support for 'CMIF version 2.0' movies, with compressed color.
This commit is contained in:
Guido van Rossum 1991-11-22 14:04:01 +00:00
parent 7385d583a5
commit a63f19798d
1 changed files with 73 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

85
Demo/sgi/video/video.py
View file

@ -6,11 +6,13 @@ import time
import sys
import al
import AL
import colorsys
BUFFERSIZE = 32000
class Struct(): pass
epoch = Struct()
epoch.correcttiming = 1
EndOfFile = 'End of file'
bye = 'bye'
@ -29,13 +31,19 @@ def openvideo(name):
sys.exit(1)
line = f.readline()
if not line: raise EndOfFile
if line[:4] = 'CMIF': line = f.readline()
if line[:4] = 'CMIF':
if line[:14] = 'CMIF video 2.0':
line = f.readline()
colorinfo = eval(line[:-1])
else:
colorinfo = (8,0,0,0)
line = f.readline()
x = eval(line[:-1])
if len(x) = 3: w, h, pf = x
else: w, h = x; pf = 2
return f, w, h, pf
return f, w, h, pf, colorinfo
def loadframe(f,w,h,pf,af,spkr):
def loadframe(f,w,h,pf,af,spkr, (ybits,ibits,qbits,chrompack),mf):
line = f.readline()
if line = '':
raise EndOfFile
@ -52,21 +60,54 @@ def loadframe(f,w,h,pf,af,spkr):
if len(data) <> size:
raise EndOfFile
if pf:
rectzoom(pf, pf)
w = w/pf
h = h/pf
data = unpackrect(w, h, 1, data)
if chrompack:
cw = (w+chrompack-1)/chrompack
ch = (h+chrompack-1)/chrompack
chromdata = f.read(2*cw*ch)
rectzoom(pf*chrompack*mf,pf*chrompack*mf)
pixmode(5,16)
writemask(0x7ff - ((1<<ybits)-1))
lrectwrite(0,0,cw-1,ch-1,chromdata)
writemask((1<<ybits)-1)
pixmode(5,8)
if pf:
rectzoom(pf*mf, pf*mf)
elif mf <> 1:
rectzoom(mf,mf)
lrectwrite(0,0,w-1,h-1,data)
# This is ugly here, but the only way to get the two
# channels started in sync
#if af <> None:
# playsound(af,spkr)
ct = time.millitimer() - epoch.epoch
if tijd > 0 and ct < tijd:
if epoch.correcttiming and tijd > 0 and ct < tijd:
time.millisleep(tijd-ct)
#swapbuffers()
return tijd
def initcmap(ybits,ibits,qbits,chrompack):
if ybits+ibits+qbits > 11:
raise 'Sorry, 11 bits max'
maxy = pow(2,ybits)
maxi = pow(2,ibits)
maxq = pow(2,qbits)
for i in range(2048,4096-256):
mapcolor(i, 0, 255, 0)
for y in range(maxy):
yv = float(y)/float(maxy-1)
for i in range(maxi):
iv = (float(i)/float(maxi-1))-0.5
for q in range(maxq):
qv = (float(q)/float(maxq-1))-0.5
index = 2048 + y + (i << ybits) + (q << (ybits+ibits))
rv,gv,bv = colorsys.yiq_to_rgb(yv,iv,qv)
r,g,b = int(rv*255.0), int(gv*255.0), int(bv*255.0)
if index < 4096 - 256:
mapcolor(index, r,g,b)
def playsound(af, spkr):
nsamp = spkr.getfillable()
data = af.read(nsamp*2)
@ -75,17 +116,27 @@ def playsound(af, spkr):
def main():
looping = 0
packfactor = 0
opts, args = getopt.getopt(sys.argv[1:], 'p:l')
magfactor = 1
try:
opts, args = getopt.getopt(sys.argv[1:], 'm:p:lF')
except getopt.error:
sys.stderr.write('usage: video ' + \
'[-l] [-p pf] [-m mag] [-F] [moviefile [soundfile [skipbytes]]]\n')
sys.exit(2)
for opt, arg in opts:
if opt = '-p':
if opt = '-m':
magfactor = int(eval(arg))
elif opt = '-p':
packfactor = int(eval(arg))
elif opt = '-l':
looping = 1
elif opt = '-F':
epoch.correcttiming = 0
if args:
filename = args[0]
else:
filename = 'film.video'
f, w, h, pf = openvideo(filename)
f, w, h, pf, cinfo = openvideo(filename)
if 0 < packfactor <> pf:
w = w/pf*packfactor
h = h/pf*packfactor
@ -101,11 +152,21 @@ def main():
else:
af, spkr = None, None
foreground()
prefsize(w,h)
prefsize(w*magfactor,h*magfactor)
win = winopen(filename)
RGBmode()
if pf:
#doublebuffer()
cmode()
else:
RGBmode()
#doublebuffer()
gconfig()
if pf:
initcmap(cinfo)
color(2048)
clear()
writemask(2047)
pixmode(5,8) # 8 bit pixels
qdevice(ESCKEY)
qdevice(WINSHUT)
qdevice(WINQUIT)
@ -119,7 +180,7 @@ def main():
while 1:
if running:
try:
tijd = loadframe(f, w, h, pf, af, spkr)
tijd = loadframe(f, w, h, pf, af, spkr, cinfo,magfactor)
nframe = nframe + 1
except EndOfFile:
running = 0