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Commit b0c87b95 authored by Guido van Rossum's avatar Guido van Rossum
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Remove the SGI demos. These were all ancient and nobody cared enough.

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Demo/sgi/README deleted 100644 → 0
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Demonstrations of Python that use various features of the Silicon
Graphics IRIS machines.
al Demonstrations of the audio capabilities of the
Indigo. Require the built-in module 'al'. One program
also needs the build-in module 'fl' (the FORMS
library by Mark Overmars.)
cd Demonstrations of the CD-ROM player's audio interface,
built-in module 'cd'.
flp Demonstrations of using the 'flp' standard module,
which enables you to quickly create forms using the
'fl' built-in module (available if you use the FORMS
library by Mark Overmars).
gl Demonstrations of the Graphics Library (GL).
Require the built-in module 'gl'.
sv Demonstrations of the Indigo Video module.
Requires the built-in module 'sv'. See also the
following directory.
Demo/sgi/al/README deleted 100644 → 0
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This directory contains programs using the "al" interface, which gives
access to the most important parts of the SGI Audio Library for the
Indigo and 4D/35.
alwatch.py Watch changes in device settings
broadcast.py Broadcast audio using UDP packets
cmpaf.py Compare different audio compression schemes (uses fl)
intercom.py 2-way communication with another host (uses fl)
playaiff.py Play an AIFF file (as output by recordaiff)
playback.py Play raw audio data read from stdin
playold.py Play an audio file recorded by the old 4D/25 audio
radio.py Listen to UDP packets sent by broadcast.py
rec_play.py Repeatedly record and play back a sample
record.py Record raw audio data to stdout
unicast.py Like broadcast but sends to one host
Demo/sgi/al/alwatch.py deleted 100755 → 0
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import time
import al, AL
import string
dev = AL.DEFAULT_DEVICE
source_name = ['line', 'microphone', 'digital']
params = al.queryparams(dev)
for i in range(1, len(params), 2):
params[i] = -1
while 1:
time.sleep(0.1)
old = params[:]
al.getparams(dev, params)
if params <> old:
for i in range(0, len(params), 2):
if params[i+1] <> old[i+1]:
name = al.getname(dev, params[i])
if params[i] == AL.INPUT_SOURCE:
if 0 <= old[i+1] < len(source_name):
oldval = source_name[old[i+1]]
else:
oldval = ''
newval = source_name[params[i+1]]
else:
oldval = `old[i+1]`
newval = `params[i+1]`
print string.ljust(name, 25),
print '(' + string.rjust(oldval, 10) + ')',
print '-->',
print string.rjust(newval, 10)
print
Demo/sgi/al/broadcast.py deleted 100755 → 0
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#! /usr/bin/env python
# broadcast [port]
#
# Broadcast audio input on the network as UDP packets;
# they can be received on any SGI machine with "radio.py".
# This uses the input sampling rate, input source etc. set by apanel.
# It uses the default sample width and #channels (16 bit/sample stereo).
# (This is 192,000 Bytes at a sampling speed of 48 kHz, or ~137
# packets/second -- use with caution!!!)
import sys, al
from socket import *
port = 5555
if sys.argv[1:]: port = eval(sys.argv[1])
s = socket(AF_INET, SOCK_DGRAM)
s.allowbroadcast(1)
p = al.openport('broadcast', 'r')
address = '<broadcast>', port
while 1:
# 700 samples equals 1400 bytes, or about the max packet size!
data = p.readsamps(700)
s.sendto(data, address)
Demo/sgi/al/cmpaf.py deleted 100755 → 0
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# Compare different audio compression schemes.
#
# This copies mono audio data from the input port to the output port,
# and puts up a window with 4 toggle buttons:
#
# uLAW : convert the data to uLAW and back
# ADPCM : convert the data to ADPCM and back
# Difference : make only the difference between the converted and the
# original data audible
# Exit : quit from the program
import fl
import FL
import flp
import al
import AL
import audioop
import sys
class Cmpaf:
def __init__(self):
parsetree = flp.parse_form('cmpaf_form','form')
flp.create_full_form(self, parsetree)
c = al.newconfig()
c.setchannels(AL.MONO)
c.setqueuesize(1800)
self.iport = al.openport('cmpaf','r', c)
self.oport = al.openport('cmpaf','w', c)
self.do_adpcm = self.do_ulaw = self.do_diff = 0
self.acstate = None
self.form.show_form(FL.PLACE_SIZE, 1, 'compare audio formats')
def run(self):
while 1:
olddata = data = self.iport.readsamps(600)
if self.do_ulaw:
data = audioop.lin2ulaw(data, 2)
data = audioop.ulaw2lin(data, 2)
if self.do_adpcm:
data, nacstate = audioop.lin2adpcm(data, 2, \
self.acstate)
data, dummy = audioop.adpcm2lin(data, 2, \
self.acstate)
self.acstate = nacstate
if self.do_diff:
olddata = audioop.mul(olddata, 2, -1)
data = audioop.add(olddata, data, 2)
self.oport.writesamps(data)
fl.check_forms()
def cb_exit(self, *args):
sys.exit(0)
def cb_adpcm(self, obj, val):
self.do_adpcm = obj.get_button()
def cb_ulaw(self, obj, val):
self.do_ulaw = obj.get_button()
def cb_diff(self, obj, val):
self.do_diff = obj.get_button()
cmpaf = Cmpaf()
cmpaf.run()
Demo/sgi/al/cmpaf_form.fd deleted 100755 → 0
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Magic: 12321
Internal Form Definition File
(do not change)
Number of forms: 1
=============== FORM ===============
Name: form
Width: 230.000000
Height: 80.000000
Number of Objects: 5
--------------------
class: 1
type: 1
box: 0.000000 0.000000 230.000000 80.000000
boxtype: 1
colors: 47 47
alignment: 4
style: 0
size: 11.000000
lcol: 0
label:
name:
callback:
argument:
--------------------
class: 12
type: 1
box: 10.000000 40.000000 100.000000 30.000000
boxtype: 1
colors: 39 3
alignment: 4
style: 0
size: 11.000000
lcol: 0
label: uLAW
name: ulawbutton
callback: cb_ulaw
argument: 0
--------------------
class: 12
type: 1
box: 10.000000 10.000000 100.000000 30.000000
boxtype: 1
colors: 39 3
alignment: 4
style: 0
size: 11.000000
lcol: 0
label: ADPCM
name: adpcm_button
callback: cb_adpcm
argument: 0
--------------------
class: 11
type: 0
box: 170.000000 10.000000 50.000000 20.000000
boxtype: 1
colors: 47 47
alignment: 4
style: 0
size: 11.000000
lcol: 0
label: EXIT
name: exit_button
callback: cb_exit
argument: 0
--------------------
class: 12
type: 1
box: 120.000000 40.000000 100.000000 30.000000
boxtype: 1
colors: 39 3
alignment: 4
style: 0
size: 11.000000
lcol: 0
label: Difference
name: diffbutton
callback: cb_diff
argument: 0
==============================
create_the_forms
Demo/sgi/al/intercom.py deleted 100755 → 0
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# intercom -- use mike and headset to *talk* to a person on another host.
# For SGI 4D/35 or Indigo running IRIX 4.0.
# Uses 16 bit sampling at 16000 samples/sec, or 32000 bytes/sec,
# tranmitted in 32 1000-byte UDP packets. (In each direction!)
#
# usage:
# intercom hostname - start talking to person on other host
# intercom -r hostname - called remotely to do the setup
from names import *
import sys, time, posix, gl, fl, FL, al, AL, getopt, rand
from socket import *
# UDP port numbers used (one for each direction!)
PORT1 = 51042
PORT2 = PORT1+1
# Figure out the user name
try:
user = posix.environ['LOGNAME']
except:
user = posix.environ['USER']
# Debug flags (Implemented as a list; non-empty means debugging is on)
debug = []
def main():
remote = 0
opts, args = getopt.getopt(sys.argv[1:], 'rd')
for opt, arg in opts:
if opt == '-r': remote = 1
elif opt == '-d': debug.append(opt)
if len(args) <> 1:
msg = 'usage: intercom [-d] [-r] hostname'
msg = msg + ' (-r is for internal use only!)\n'
sys.stderr.write(msg)
sys.exit(2)
if remote:
server(args[0])
else:
client(args[0])
def client(hostname):
print 'client starting'
cmd = 'rsh ' + hostname + ' "cd ' + AUDIODIR
cmd = cmd + '; DISPLAY=:0; export DISPLAY'
cmd = cmd + '; ' + PYTHON + ' intercom.py -r '
for flag in debug: cmd = cmd + flag + ' '
cmd = cmd + gethostname()
cmd = cmd + '"'
if debug: print cmd
pipe = posix.popen(cmd, 'r')
ack = 0
nak = 0
while 1:
line = pipe.readline()
if not line: break
sys.stdout.write('remote: ' + line)
if line == 'NAK\n':
nak = 1
break
elif line == 'ACK\n':
ack = 1
break
if nak:
print 'Remote user doesn\'t want to talk to you.'
return
if not ack:
print 'No acknowledgement (remote side crashed?).'
return
#
print 'Ready...'
#
s = socket(AF_INET, SOCK_DGRAM)
s.bind('', PORT2)
#
otheraddr = gethostbyname(hostname), PORT1
try:
try:
ioloop(s, otheraddr)
except KeyboardInterrupt:
log('client got intr')
except error:
log('client got error')
finally:
s.sendto('', otheraddr)
log('client finished sending empty packet to server')
#
log('client exit')
print 'Done.'
def server(hostname):
print 'server starting'
sys.stdout.flush()
#
if not remotedialog():
print 'NAK'
return
#
print 'ACK'
#
s = socket(AF_INET, SOCK_DGRAM)
s.bind('', PORT1)
#
# Close std{in,out,err} so rsh will exit; reopen them as dummies
#
sys.stdin.close()
sys.stdin = open('/dev/null', 'r')
sys.stdout.close()
sys.stdout = open('/dev/null', 'w')
sys.stderr.close()
if debug:
sys.stderr = open('/tmp/intercom.err', 'a')
else:
sys.stderr = open('/dev/null', 'w')
#
ioloop(s, (gethostbyname(hostname), PORT2))
log('server exit')
sys.exit(0)
def remotedialog():
gl.foreground()
gl.ringbell()
m1 = user + ' wants to talk to you over the audio channel.'
m2 = 'If it\'s OK, put on your headset and click Yes.'
m3 = 'If you\'re too busy, click No.'
return fl.show_question(m1, m2, m3)
def ioloop(s, otheraddr):
#
dev = AL.DEFAULT_DEVICE
params = al.queryparams(dev)
al.getparams(dev, params)
time.sleep(1)
saveparams = params[:]
for i in range(0, len(params), 2):
if params[i] in (AL.INPUT_RATE, AL.OUTPUT_RATE):
params[i+1] = AL.RATE_16000
elif params[i] == AL.INPUT_SOURCE:
params[i+1] = AL.INPUT_MIC
try:
al.setparams(dev, params)
ioloop1(s, otheraddr)
finally:
al.setparams(dev, saveparams)
def ioloop1(s, otheraddr):
#
# Watch out! data is in bytes, but the port counts in samples,
# which are two bytes each (for 16-bit samples).
# Luckily, we use mono, else it would be worse (2 samples/frame...)
#
SAMPSPERBUF = 500
BYTESPERSAMP = 2 # AL.SAMPLE_16
BUFSIZE = BYTESPERSAMP*SAMPSPERBUF
QSIZE = 4*SAMPSPERBUF
#
config = al.newconfig()
config.setqueuesize(QSIZE)
config.setwidth(AL.SAMPLE_16)
config.setchannels(AL.MONO)
#
pid = posix.fork()
if pid:
# Parent -- speaker/headphones handler
log('parent started')
spkr = al.openport('spkr', 'w', config)
while 1:
data = s.recv(BUFSIZE)
if len(data) == 0:
# EOF packet
log('parent got empty packet; killing child')
posix.kill(pid, 15)
return
# Discard whole packet if we are too much behind
if spkr.getfillable() > len(data) / BYTESPERSAMP:
if len(debug) >= 2:
log('parent Q full; dropping packet')
spkr.writesamps(data)
else:
# Child -- microphone handler
log('child started')
try:
try:
mike = al.openport('mike', 'r', config)
# Sleep a while to let the other side get started
time.sleep(1)
# Drain the queue before starting to read
data = mike.readsamps(mike.getfilled())
# Loop, sending packets from the mike to the net
while 1:
data = mike.readsamps(SAMPSPERBUF)
s.sendto(data, otheraddr)
except KeyboardInterrupt:
log('child got interrupt; exiting')
posix._exit(0)
except error:
log('child got error; exiting')
posix._exit(1)
finally:
log('child got unexpected error; leaving w/ traceback')
def log(msg):
if not debug: return
if type(msg) <> type(''):
msg = `msg`
f = open('/tmp/intercom.log', 'a')
f.write(`sys.argv` + ' ' + `posix.getpid()` + ': ' + msg + '\n')
f.close()
main()
Demo/sgi/al/listen.py deleted 100755 → 0
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# Listen to the input on host argv[1].
import sys, al, AL, posix
BUFSIZE = 2000
QSIZE = 4000
def main():
if len(sys.argv) <> 2:
sys.stderr.write('usage: ' + sys.argv[0] + ' hostname\n')
sys.exit(2)
hostname = sys.argv[1]
cmd = 'exec rsh </dev/null ' + hostname + \
' "cd /ufs/guido/mm/demo/audio; ' + \
'exec /ufs/guido/bin/sgi/python record.py"'
pipe = posix.popen(cmd, 'r')
config = al.newconfig()
config.setchannels(AL.MONO)
config.setqueuesize(QSIZE)
port = al.openport('', 'w', config)
while 1:
data = pipe.read(BUFSIZE)
if not data:
sts = pipe.close()
sys.stderr.write(sys.argv[0] + ': end of data\n')
if sts: sys.stderr.write('rsh exit status '+`sts`+'\n')
sys.exit(1)
port.writesamps(data)
del data
try:
main()
except KeyboardInterrupt:
sys.exit(1)
Demo/sgi/al/names.py deleted 100755 → 0
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import sys
# My home directory/
GUIDO = '/ufs/guido/'
# Hack sys.path so AL can be found
LIB = GUIDO + 'lib/python'
if LIB not in sys.path: sys.path.insert(0, LIB)
# Python binary to be used on remote machine
PYTHON = GUIDO + 'bin/sgi/python'
# Directory where the programs live
AUDIODIR = GUIDO + 'src/python/demo/sgi/al'
Demo/sgi/al/playaiff.py deleted 100755 → 0
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import aiff
import al
import sys
import time
def main():
v = 1
c = al.newconfig()
nchannels = c.getchannels()
nsampframes = 0 # ???
sampwidth = c.getwidth()
samprate = 0.0 # unknown
filename = sys.argv[1]
f = open(filename, 'r')
type, totalsize = aiff.read_chunk_header(f)
if type <> 'FORM':
raise aiff.Error, 'FORM chunk expected at start of file'
aiff.read_form_chunk(f)
while 1:
try:
type, size = aiff.read_chunk_header(f)
except EOFError:
break
if v: print 'header:', `type`, size
if type == 'COMM':
nchannels, nsampframes, sampwidth, samprate = \
aiff.read_comm_chunk(f)
if v: print nchannels, nsampframes, sampwidth, samprate
elif type == 'SSND':
offset, blocksize = aiff.read_ssnd_chunk(f)
if v: print offset, blocksize
data = f.read(size-8)
if size%2: void = f.read(1)
p = makeport(nchannels, sampwidth, samprate)
play(p, data, offset, blocksize)
elif type in aiff.skiplist:
aiff.skip_chunk(f, size)
else:
raise aiff.Error, 'bad chunk type ' + type
def makeport(nchannels, sampwidth, samprate):
c = al.newconfig()
c.setchannels(nchannels)
c.setwidth(sampwidth/8)
# can't set the rate...
p = al.openport('', 'w', c)
return p
def play(p, data, offset, blocksize):
data = data[offset:]
p.writesamps(data)
while p.getfilled() > 0: time.sleep(0.01)
main()
Demo/sgi/al/playback.py deleted 100755 → 0
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# Read mono 16bit samples from stdin and write them to the audio device.
# Assume the sampling rate is compatible.
# Use a small queue size to minimize delays.
import al, sys
import AL
BUFSIZE = 2000
QSIZE = 4000
def main():
c = al.newconfig()
c.setchannels(AL.MONO)
c.setqueuesize(QSIZE)
p = al.openport('', 'w', c)
while 1:
data = sys.stdin.read(BUFSIZE)
p.writesamps(data)
try:
main()
except KeyboardInterrupt:
sys.exit(1)
Demo/sgi/al/playold.py deleted 100755 → 0
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# Play old style sound files (Guido's private format)
import al, sys, time
import AL
BUFSIZE = 8000
def main():
if len(sys.argv) < 2:
f = sys.stdin
filename = sys.argv[0]
else:
if len(sys.argv) <> 2:
sys.stderr.write('usage: ' + \
sys.argv[0] + ' filename\n')
sys.exit(2)
filename = sys.argv[1]
f = open(filename, 'r')
#
magic = f.read(4)
extra = ''
if magic == '0008':
rate = 8000
elif magic == '0016':
rate = 16000
elif magic == '0032':
rate = 32000
else:
sys.stderr.write('no magic header; assuming 8k samples/sec.\n')
rate = 8000
extra = magic
#
pv = [AL.OUTPUT_RATE, rate]
al.setparams(AL.DEFAULT_DEVICE, pv)
c = al.newconfig()
c.setchannels(AL.MONO)
c.setwidth(AL.SAMPLE_8)
port = al.openport(filename, 'w', c)
if extra:
port.writesamps(extra)
while 1:
buf = f.read(BUFSIZE)
if not buf: break
port.writesamps(buf)
while port.getfilled() > 0:
time.sleep(0.1)
try:
main()
except KeyboardInterrupt:
sys.exit(1)
Demo/sgi/al/radio.py deleted 100755 → 0
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#! /usr/bin/env python
# radio [port]
#
# Receive audio packets broadcast by "broadcast.py" on another SGI machine.
# Use apanel to set the output sampling rate to match that of the broadcast.
import sys, al
from socket import *
port = 5555
if sys.argv[1:]: port = eval(sys.argv[1])
s = socket(AF_INET, SOCK_DGRAM)
s.bind('', port)
p = al.openport('radio', 'w')
while 1:
data = s.recv(1400)
p.writesamps(data)
Demo/sgi/al/rec_play.py deleted 100755 → 0
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#
# records an AIFF sample and plays it
# infinity number of times.
#
import time
import al
def recordit () :
p = al.openport('hello', 'r')
print 'recording...'
buf = p.readsamps(500000)
print 'done.'
p.closeport()
return buf
def playit (buf) :
p = al.openport('hello', 'w')
print 'playing...'
p.writesamps(buf)
while p.getfilled() > 0:
time.sleep(0.01)
print 'done.'
p.closeport()
while 1 :
playit (recordit ())
Demo/sgi/al/record.py deleted 100755 → 0
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# Record mono 16bits samples from the audio device and send them to stdout.
# Assume the sampling rate is compatible.
# Use a small queue size to minimize delays.
import al, sys
import AL
BUFSIZE = 2000
QSIZE = 4000
def main():
c = al.newconfig()
c.setchannels(AL.MONO)
c.setqueuesize(QSIZE)
p = al.openport('', 'r', c)
while 1:
data = p.readsamps(BUFSIZE)
sys.stdout.write(data)
try:
main()
except KeyboardInterrupt:
sys.exit(1)
Demo/sgi/al/unicast.py deleted 100755 → 0
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#! /usr/bin/env python
# unicast host [port]
#
# Similar to "broadcast.py" but sends to a specific host only;
# use "radio.py" on the designated host to receive.
# This is less stressful on other hosts on the same ethernet segment
# if you need to send to one host only.
import sys, al
from socket import *
host = sys.argv[1]
port = 5555
if sys.argv[2:]: port = eval(sys.argv[1])
s = socket(AF_INET, SOCK_DGRAM)
p = al.openport('unicast', 'r')
address = host, port
while 1:
# 700 samples equals 1400 bytes, or about the max packet size!
data = p.readsamps(700)
s.sendto(data, address)
Demo/sgi/al/x.py deleted 100755 → 0
View file @ 4cb22048
# Demonstrate that rsh exits when the remote end closes std{in,out,err}.
# rsh voorn exec /ufs/guido/bin/sgi/python /ufs/guido/mm/demo/audio/x.py
print 'hoi!'
import sys
sys.stdin.close()
sys.stdout.close()
sys.stderr.close()
import time
time.sleep(5)
sys.stdout = open('@', 'w')
sys.stdout.write('Hello\n')
Demo/sgi/audio/README deleted 100644 → 0
View file @ 4cb22048
Programs that demonstrate the use of the audio device on the SGI 4D/25.
These require the built-in module 'audio'.
XXX This hardware is already obsolete; see ../al for examples of audio
XXX on the Indigo and 4D/35.
play Read a sound sample from a file and play it through the
speaker. Options to set volume, sampling rate etc.
Demo/sgi/audio/play.py deleted 100755 → 0
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#! /usr/bin/env python
import sys
import audio
import string
import getopt
import auds
debug = []
DEF_RATE = 3
def main():
#
gain = 100
rate = 0
starter = audio.write
stopper = 0
#
optlist, args = getopt.getopt(sys.argv[1:], 'adg:r:')
#
for optname, optarg in optlist:
if 0:
pass
elif optname == '-d':
debug.append(1)
elif optname == '-g':
gain = string.atoi(optarg)
if not (0 < gain < 256):
raise optarg.error, '-g gain out of range'
elif optname == '-r':
rate = string.atoi(optarg)
if not (1 <= rate <= 3):
raise optarg.error, '-r rate out of range'
elif optname == '-a':
starter = audio.start_playing
stopper = audio.wait_playing
#
audio.setoutgain(gain)
audio.setrate(rate)
#
if not args:
play(starter, rate, auds.loadfp(sys.stdin))
else:
real_stopper = 0
for file in args:
if real_stopper:
real_stopper()
play(starter, rate, auds.load(file))
real_stopper = stopper
def play(starter, rate, data):
magic = data[:4]
if magic == '0008':
mrate = 3
elif magic == '0016':
mrate = 2
elif magic == '0032':
mrate = 1
else:
mrate = 0
if mrate:
data = data[4:]
else:
mrate = DEF_RATE
if not rate: rate = mrate
audio.setrate(rate)
starter(data)
try:
main()
finally:
audio.setoutgain(0)
audio.done()
Demo/sgi/sv/README deleted 100644 → 0
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Demo programs for the SGI Video library for the Indigo (IRIX 4.0.5).
These are more-or-less literal translations of the C programs from the
Indigo Video Programming Guide, by Sjoerd Mullender, with some changes
by Guido.
Note that none of the example programs save any data to a file,
although this would be easy to do (e.g. individual grabbed frames
could be written as SGI image files using the imgfile module).
We have written a Python program to record live video to file (within
the limits of the Indigo video board), and a suite of programs to
manipulate and display such files. At the moment we don't distribute
these programs, since the file format is, eh..., weird, to say the
least. However, if you are really interested we can mail you the
source.
Also note that we haven't tried using video *output* yet.
simpleinput.py Live video in a resizable window
rgbgrab.py Grab still frames
contcapt.py Continuous capturing
burstcapt.py Burst capturing
Demo/sgi/sv/burstcapt.py deleted 100755 → 0
View file @ 4cb22048
import sys
import sv, SV
import gl, GL, DEVICE
def main():
format = SV.RGB8_FRAMES
requestedwidth = SV.PAL_XMAX
queuesize = 30
if sys.argv[1:]:
queuesize = eval(sys.argv[1])
v = sv.OpenVideo()
svci = (format, requestedwidth, 0, queuesize, 0)
go = raw_input('Press return to capture ' + `queuesize` + ' frames: ')
result = v.CaptureBurst(svci)
svci, buffer, bitvec = result
## svci, buffer = result # XXX If bit vector not yet implemented
print 'Captured', svci[3], 'frames, i.e.', len(buffer)/1024, 'K bytes'
w, h = svci[1:3]
framesize = w * h
gl.prefposition(300, 300+w-1, 100, 100+h-1)
gl.foreground()
win = gl.winopen('Burst Capture')
gl.RGBmode()
gl.gconfig()
gl.qdevice(DEVICE.LEFTMOUSE)
gl.qdevice(DEVICE.ESCKEY)
print 'Click left mouse for next frame'
for i in range(svci[3]):
inverted_frame = sv.RGB8toRGB32(1, \
buffer[i*framesize:(i+1)*framesize], w, h)
gl.lrectwrite(0, 0, w-1, h-1, inverted_frame)
while 1:
dev, val = gl.qread()
if dev == DEVICE.LEFTMOUSE and val == 1:
break
if dev == DEVICE.REDRAW:
gl.lrectwrite(0, 0, w-1, h-1, inverted_frame)
if dev == DEVICE.ESCKEY:
v.CloseVideo()
gl.winclose(win)
return
v.CloseVideo()
gl.winclose(win)
main()
Demo/sgi/sv/contcapt.py deleted 100755 → 0
View file @ 4cb22048
import sys
import sv, SV
import gl, GL, DEVICE
def main():
format = SV.RGB8_FRAMES
framerate = 25
queuesize = 16
samplingrate = 2
v = sv.OpenVideo()
# Determine maximum window size based on signal standard
param = [SV.BROADCAST, 0]
v.GetParam(param)
if param[1] == SV.PAL:
width = SV.PAL_XMAX
height = SV.PAL_YMAX
framefreq = 25
else:
width = SV.NTSC_XMAX
height = SV.NTSC_YMAX
framefreq = 30
# Allow resizing window if capturing RGB frames, which can be scaled
if format == SV.RGB8_FRAMES:
gl.keepaspect(width, height)
gl.maxsize(width, height)
gl.stepunit(8, 6)
gl.minsize(120, 90)
else:
if format == SV.YUV411_FRAMES_AND_BLANKING_BUFFER:
height = height + SV.BLANKING_BUFFER_SIZE
gl.prefposition(300, 300+width-1, 100, 100+height-1)
# Open the window
gl.foreground()
win = gl.winopen('Continuous Capture')
gl.RGBmode()
gl.gconfig()
if format == SV.RGB8_FRAMES:
width, height = gl.getsize()
gl.pixmode(GL.PM_SIZE, 8)
else:
gl.pixmode(GL.PM_SIZE, 32)
svci = (format, width, height, queuesize, samplingrate)
[svci]
svci = v.InitContinuousCapture(svci)
width, height = svci[1:3]
[svci]
hz = gl.getgdesc(GL.GD_TIMERHZ)
gl.noise(DEVICE.TIMER0, hz / framerate)
gl.qdevice(DEVICE.TIMER0)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
gl.qdevice(DEVICE.ESCKEY)
ndisplayed = 0
lastfieldID = 0
while 1:
dev, val = gl.qread()
if dev == DEVICE.REDRAW:
oldw = width
oldh = height
width, height = gl.getsize()
if oldw != width or oldh != height:
v.EndContinuousCapture()
gl.viewport(0, width-1, 0, height-1)
svci = (svci[0], width, height) + svci[3:]
svci = v.InitContinuousCapture(svci)
width, height = svci[1:3]
[svci]
if ndisplayed:
print 'lost',
print fieldID/(svci[4]*2) - ndisplayed,
print 'frames'
ndisplayed = 0
elif dev == DEVICE.TIMER0:
try:
captureData, fieldID = v.GetCaptureData()
except sv.error, val:
if val <> 'no data available':
print val
continue
if fieldID - lastfieldID <> 2*samplingrate:
print lastfieldID, fieldID
lastfieldID = fieldID
if svci[0] == SV.RGB8_FRAMES:
rgbbuf = captureData.InterleaveFields(1)
else:
rgbbuf = captureData.YUVtoRGB(1)
captureData.UnlockCaptureData()
gl.lrectwrite(0, 0, width-1, height-1, rgbbuf)
ndisplayed = ndisplayed + 1
elif dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
v.EndContinuousCapture()
v.CloseVideo()
gl.winclose(win)
print fieldID, ndisplayed, svci[4]
print 'lost', fieldID/(svci[4]*2) - ndisplayed,
print 'frames'
return
main()
Demo/sgi/sv/rgbgrab.py deleted 100755 → 0
View file @ 4cb22048
import sys
import sv, SV
import gl, GL, DEVICE
import time
def main():
v = sv.OpenVideo()
# Determine maximum window size based on signal standard
param = [SV.BROADCAST, 0]
v.GetParam(param)
if param[1] == SV.PAL:
width = SV.PAL_XMAX
height = SV.PAL_YMAX
elif param[1] == SV.NTSC:
width = SV.NTSC_XMAX
height = SV.NTSC_YMAX
else:
print 'Unknown video standard', param[1]
sys.exit(1)
# Initially all windows are half size
grabwidth, grabheight = width/2, height/2
# Open still window
gl.foreground()
gl.prefsize(grabwidth, grabheight)
still_win = gl.winopen('Grabbed frame')
gl.keepaspect(width, height)
gl.maxsize(width, height)
gl.winconstraints()
gl.RGBmode()
gl.gconfig()
gl.clear()
gl.pixmode(GL.PM_SIZE, 8)
# Open live window
gl.foreground()
gl.prefsize(grabwidth, grabheight)
live_win = gl.winopen('Live video')
gl.keepaspect(width, height)
gl.maxsize(width, height)
gl.winconstraints()
# Bind live video
v.SetSize(gl.getsize())
v.BindGLWindow(live_win, SV.IN_REPLACE)
print 'Use leftmouse to grab frame'
gl.qdevice(DEVICE.LEFTMOUSE)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
gl.qdevice(DEVICE.ESCKEY)
frame = None
while 1:
dev, val = gl.qread()
if dev == DEVICE.LEFTMOUSE and val == 0:
w, h, fields = v.CaptureOneFrame(SV.RGB8_FRAMES, \
grabwidth, grabheight)
frame = sv.InterleaveFields(1, fields, w, h)
gl.winset(still_win)
gl.lrectwrite(0, 0, w - 1, h - 1, frame)
gl.winset(live_win)
if dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
v.CloseVideo()
gl.winclose(live_win)
gl.winclose(still_win)
break
if dev == DEVICE.REDRAW and val == still_win:
gl.winset(still_win)
gl.reshapeviewport()
gl.clear()
grabwidth, grabheight = gl.getsize()
if frame:
gl.lrectwrite(0, 0, w - 1, h - 1, frame)
gl.winset(live_win)
if dev == DEVICE.REDRAW and val == live_win:
v.SetSize(gl.getsize())
v.BindGLWindow(live_win, SV.IN_REPLACE)
main()
Demo/sgi/sv/simpleinput.py deleted 100755 → 0
View file @ 4cb22048
import sv, SV
import gl, DEVICE
def main():
gl.foreground()
gl.prefsize(SV.PAL_XMAX, SV.PAL_YMAX)
win = gl.winopen('video test')
v = sv.OpenVideo()
params = [SV.VIDEO_MODE, SV.COMP, SV.BROADCAST, SV.PAL]
v.SetParam(params)
v.BindGLWindow(win, SV.IN_REPLACE)
gl.qdevice(DEVICE.ESCKEY)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
while 1:
dev, val = gl.qread()
if dev in (DEVICE.ESCKEY, DEVICE.WINSHUT, DEVICE.WINQUIT):
v.CloseVideo()
gl.winclose(win)
return
main()
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