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gvanrossumgvanrossum
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VCR.py: Use unix files instead of stdio files for tty communication,
 because of buffering. Also added several new commands (Jack). VFile.py: Made setting of RGB or colormap mode separate methods, so they can be overridden (e.g. when using the Glx.draw widget the way to change the mode is totally different).
1 parent 672754a commit fa04170

2 files changed

Lines changed: 151 additions & 10 deletions

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‎Demo/sgi/video/VCR.py‎

Lines changed: 137 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -4,9 +4,30 @@
44
import sys
55
import struct
66
import select
7+
import posix
78

89
DEVICE='/dev/ttyd2'
910

11+
class UnixFile:
12+
def open(self, name, mode):
13+
self.fd = posix.open(name, mode)
14+
return self
15+
16+
def read(self, len):
17+
return posix.read(self.fd, len)
18+
19+
def write(self, data):
20+
dummy = posix.write(self.fd, data)
21+
22+
def flush(self):
23+
pass
24+
25+
def fileno(self):
26+
return self.fd
27+
28+
def close(self):
29+
dummy = posix.close(self.fd)
30+
1031
def packttyargs(*args):
1132
if type(args) <> type(()):
1233
raise 'Incorrect argtype for packttyargs'
@@ -39,8 +60,8 @@ def unpackttyargs(str):
3960
return (iflag, oflag, cflag, lflag, line, chars)
4061

4162
def initline(name):
42-
fp = open(name, 'r')
43-
ofp = open(name, 'w')
63+
fp = UnixFile().open(name, 2)
64+
ofp = fp
4465
fd = fp.fileno()
4566
rv = fcntl.ioctl(fd, IOCTL.TCGETA, nullttyargs())
4667
iflag, oflag, cflag, lflag, line, chars = unpackttyargs(rv)
@@ -92,21 +113,40 @@ def initline(name):
92113
FF ='\xab'
93114
REW ='\xac'
94115
STILL='\x4f'
95-
STEP_FWD ='\xad'
116+
STEP_FWD ='\x2b' # Was: '\xad'
96117
FM_SELECT=EXP_8 + '\xc8'
97118
FM_STILL=EXP_8 + '\xcd'
98119
DM_OFF=EXP_8 + '\xc9'
99120
DM_SET=EXP_8 + '\xc4'
100121
FWD_SHUTTLE='\xb5'
101122
REV_SHUTTLE='\xb6'
123+
EM_SELECT=EXP_8 + '\xc0'
124+
N_FRAME_REC=EXP_8 + '\x92'
125+
126+
IN_ENTRY=EXP_7 + '\x90'
127+
IN_ENTRY_RESET=EXP_7 + '\x91'
128+
IN_ENTRY_SET=EXP_7 + '\x98'
129+
IN_ENTRY_INC=EXP_7 + '\x94'
130+
IN_ENTRY_DEC=EXP_7 + '\x95'
131+
IN_ENTRY_SENSE=EXP_7 + '\x9a'
132+
133+
OUT_ENTRY=EXP_7 + '\x92'
134+
OUT_ENTRY_RESET=EXP_7 + '\x93'
135+
OUT_ENTRY_SET=EXP_7 + '\x99'
136+
OUT_ENTRY_INC=EXP_7 + '\x96'
137+
OUT_ENTRY_DEC=EXP_7 + '\x98'
138+
OUT_ENTRY_SENSE=EXP_7 + '\x9b'
139+
140+
DEBUG=0
102141

103142
class VCR:
104143
def init(self):
105144
self.ifp, self.ofp = initline(DEVICE)
106145
return self
107146

108147
def _cmd(self, cmd):
109-
## print '>>>',`cmd`
148+
if DEBUG:
149+
print '>>>',`cmd`
110150
self.ofp.write(cmd)
111151
self.ofp.flush()
112152

@@ -118,8 +158,10 @@ def _waitdata(self, len, tout):
118158
## if rep:
119159
## print 'FLUSHED:', `rep`
120160
return None
161+
# XXXX Niet goed: er is meer gebufferd!
121162
data = self.ifp.read(1)
122-
## print '<<<',`data`
163+
if DEBUG:
164+
print '<<<',`data`
123165
if data == NAK:
124166
return NAK
125167
rep = rep + data
@@ -143,11 +185,12 @@ def _getnumber(self, len):
143185
return number
144186

145187
def _iflush(self):
146-
dummy = self._waitdata(10000, 1)
188+
dummy = self._waitdata(10000, 0)
147189
## if dummy:
148190
## print 'IFLUSH:', dummy
149191

150192
def simplecmd(self,cmd):
193+
self._iflush()
151194
for ch in cmd:
152195
self._cmd(ch)
153196
rep = self._reply(1)
@@ -157,6 +200,11 @@ def simplecmd(self,cmd):
157200
raise error, 'Unexpected reply:' + `rep`
158201
return 1
159202

203+
def replycmd(self, cmd):
204+
if not self.simplecmd(cmd[:-1]):
205+
return 0
206+
self._cmd(cmd[-1])
207+
160208
def _number(self, number, digits):
161209
if number < 0:
162210
raise error, 'Unexpected negative number:'+ `number`
@@ -258,6 +306,41 @@ def fmmode(self, mode):
258306
return 0
259307
return 1
260308

309+
def editmode(self, mode):
310+
if mode == 'off':
311+
a0 = a1 = a2 = 0
312+
elif mode == 'format':
313+
a0 = 4
314+
a1 = 7
315+
a2 = 4
316+
elif mode == 'asmbl':
317+
a0 = 1
318+
a1 = 7
319+
a2 = 4
320+
elif mode == 'insert-video':
321+
a0 = 2
322+
a1 = 4
323+
a2 = 0
324+
else:
325+
raise 'editmode should be off,format,asmbl or insert-video'
326+
if not self.simplecmd(EM_SELECT):
327+
return 0
328+
self._number(a0, 1)
329+
self._number(a1, 1)
330+
self._number(a2, 1)
331+
if not self.simplecmd(ENTER):
332+
return 0
333+
return 1
334+
335+
def nframerec(self, num):
336+
if not self.simplecmd(N_FRAME_REC):
337+
return 0
338+
self._number(num, 4)
339+
if not self.simplecmd(ENTER):
340+
return 0
341+
self.waitready()
342+
return 1
343+
261344
def fmstill(self):
262345
if not self.simplecmd(FM_STILL):
263346
return 0
@@ -295,3 +378,51 @@ def revshuttle(self, num):
295378
return 0
296379
self._number(num, 1)
297380
return 1
381+
382+
def getentry(self, which):
383+
if which == 'in':
384+
cmd = IN_ENTRY_SENSE
385+
elif which == 'out':
386+
cmd = OUT_ENTRY_SENSE
387+
self.replycmd(cmd)
388+
h = self._getnumber(2)
389+
print 'h=',h
390+
m = self._getnumber(2)
391+
print 'm=',m
392+
s = self._getnumber(2)
393+
print 's=',s
394+
f = self._getnumber(2)
395+
print 'f=',f
396+
return (h, m, s, f)
397+
398+
def inentry(self, arg):
399+
return self.ioentry(arg, (IN_ENTRY, IN_ENTRY_RESET, \
400+
IN_ENTRY_SET, IN_ENTRY_INC, IN_ENTRY_DEC))
401+
402+
def outentry(self, arg):
403+
return self.ioentry(arg, (OUT_ENTRY, OUT_ENTRY_RESET, \
404+
OUT_ENTRY_SET, OUT_ENTRY_INC, OUT_ENTRY_DEC))
405+
406+
def ioentry(self, arg, (Load, Clear, Set, Inc, Dec)):
407+
if type(arg) == type(()):
408+
h, m, s, f = arg
409+
if not self.simplecmd(Set):
410+
return 0
411+
self._number(h,2)
412+
self._number(m,2)
413+
self._number(s,2)
414+
self._number(f,2)
415+
if not self.simplecmd(ENTER):
416+
return 0
417+
return 1
418+
elif arg == 'reset':
419+
cmd = Clear
420+
elif arg == 'load':
421+
cmd = Load
422+
elif arg == '+':
423+
cmd = Inc
424+
elif arg == '-':
425+
cmd = Dec
426+
else:
427+
raise error, 'Arg should be +,-,reset,load or (h,m,s,f)'
428+
return self.simplecmd(cmd)

‎Demo/sgi/video/VFile.py‎

Lines changed: 14 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -442,8 +442,7 @@ def initcolormap(self):
442442
self.color0 = None
443443
self.fixcolor0 = 0
444444
if self.format in ('rgb', 'jpeg', 'compress'):
445-
gl.RGBmode()
446-
gl.gconfig()
445+
self.set_rgbmode()
447446
gl.RGBcolor(200, 200, 200) # XXX rather light grey
448447
gl.clear()
449448
return
@@ -456,8 +455,7 @@ def initcolormap(self):
456455
gl.clear()
457456
gl.pixmode(GL.PM_SIZE, 8)
458457
return
459-
gl.cmode()
460-
gl.gconfig()
458+
self.set_cmode()
461459
self.skipchrom = 0
462460
if self.offset == 0:
463461
self.mask = 0x7ff
@@ -470,6 +468,18 @@ def initcolormap(self):
470468
if not self.quiet:
471469
sys.stderr.write(' Done.\n')
472470

471+
# Set the window in RGB mode (may be overridden for Glx window)
472+
473+
def set_rgbmode(self):
474+
gl.RGBmode()
475+
gl.gconfig()
476+
477+
# Set the window in colormap mode (may be overridden for Glx window)
478+
479+
def set_cmode(self):
480+
gl.cmode()
481+
gl.gconfig()
482+
473483
# Clear the window to a default color
474484

475485
def clear(self):

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