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authorGuido van Rossum <guido@python.org>2002-09-17 20:36:40 (GMT)
committerGuido van Rossum <guido@python.org>2002-09-17 20:36:40 (GMT)
commit16aac45fc269ad355f069d5f76a0f4cafd06063f (patch)
tree1941156fe4df24b0c5a34d25174e3c1473c6e8d7 /Demo/sgi/video/Vrec.py
parentd679e09970465d1b914b7d3dc11eaddbbcd6d289 (diff)
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Remove the SGI demos. These were all ancient and nobody cared enough.
Diffstat (limited to 'Demo/sgi/video/Vrec.py')
-rwxr-xr-xDemo/sgi/video/Vrec.py413
1 files changed, 0 insertions, 413 deletions
diff --git a/Demo/sgi/video/Vrec.py b/Demo/sgi/video/Vrec.py
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--- a/Demo/sgi/video/Vrec.py
+++ /dev/null
@@ -1,413 +0,0 @@
-#! /usr/bin/env python
-#! /ufs/guido/bin/sgi/python-405
-
-# Capture a CMIF movie using the Indigo video library and board
-
-# The CMIF video file format is documented in cmif-film.ms.
-# Audio data is recorded in AIFF format, using the input sampling
-# rate, source and volume set by the audio panel, in mono, 8
-# bits/sample.
-
-
-# Usage and help functions (keep this up-to-date if you change the program!)
-
-def usage():
- print 'Usage: Vrec [options] [moviefile [audiofile]]'
- print
- print 'Options:'
- print '-a : record audio as well'
- print '-q queuesize : set the capture queue size (default 2)'
- print '-r rate : capture 1 out of every "rate" frames', \
- '(default and min 2)'
- print '-w width : initial window width', \
- '(default 256, use 0 for interactive placement)'
- print '-n : Don\'t write to file, only timing info'
- print '-d : drop fields if needed'
- print '-g bits : greyscale (2, 4 or 8 bits)'
- print '-G : 2-bit greyscale dithered'
- print '-m : monochrome dithered'
- print '-M value : monochrome thresholded with value'
- print '-f : Capture fields (in stead of frames)'
- print '-P frames : preallocate space for "frames" frames'
- print 'moviefile : here goes the movie data (default film.video)'
- print 'audiofile : with -a, here goes the audio data', \
- '(default film.aiff)'
-
-def help():
- print 'Press the left mouse button to start recording, release it to'
- print 'end recording. You can record as many times as you wish, but'
- print 'each recording overwrites the output file(s) -- only the last'
- print 'recording is kept.'
- print
- print 'Press ESC or use the window manager Quit or Close window option'
- print 'to quit. If you quit before recording anything, the output'
- print 'file(s) are not touched.'
-
-
-# Imported modules
-
-import sys
-sys.path.append('/ufs/guido/src/video')
-import sv, SV
-import VFile
-import gl, GL, DEVICE
-import al, AL
-import time
-import posix
-import getopt
-import string
-import imageop
-import sgi
-
-
-# Main program
-
-def main():
- format = SV.RGB8_FRAMES
- qsize = 2
- audio = 0
- rate = 2
- width = 0
- norecord = 0
- drop = 0
- mono = 0
- grey = 0
- greybits = 0
- monotreshold = -1
- fields = 0
- preallocspace = 0
-
- # Parse command line
- try:
- opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:')
- except getopt.error, msg:
- sys.stdout = sys.stderr
- print 'Error:', msg, '\n'
- usage()
- sys.exit(2)
-
- # Interpret options
- try:
- for opt, arg in opts:
- if opt == '-a':
- audio = 1
- elif opt == '-q':
- qsize = string.atoi(arg)
- elif opt == '-r':
- rate = string.atoi(arg)
- if rate < 2:
- sys.stderr.write( \
- '-r rate must be >= 2\n')
- sys.exit(2)
- elif opt == '-w':
- width = string.atoi(arg)
- elif opt == '-n':
- norecord = 1
- elif opt == '-d':
- drop = 1
- elif opt == '-g':
- grey = 1
- greybits = string.atoi(arg)
- if not greybits in (2, 4, 8):
- sys.stderr.write( \
- 'Only 2, 4 or 8 bit greyscale supported\n')
- sys.exit(2)
- elif opt == '-G':
- grey = 1
- greybits = -2
- elif opt == '-m':
- mono = 1
- elif opt == '-M':
- mono = 1
- monotreshold = string.atoi(arg)
- elif opt == '-f':
- fields = 1
- elif opt == '-P':
- preallocspace = string.atoi(arg)
- except string.atoi_error:
- sys.stdout = sys.stderr
- print 'Option', opt, 'requires integer argument'
- sys.exit(2)
-
- # Check excess arguments
- # If norecord is on, refuse filename arguments
- if norecord:
- if args:
- sys.stdout = sys.stderr
- print 'With -n, no filename arguments are used\n'
- usage()
- sys.exit(2)
- elif args[2:]:
- sys.stdout = sys.stderr
- print 'Too many filename arguments\n'
- usage()
- sys.exit(2)
-
- # Process file arguments
- if args:
- filename = args[0]
- else:
- filename = 'film.video'
-
- if args[1:] and not audio:
- sys.stderr.write('-a turned on by appearance of 2nd file\n')
- audio = 1
-
- if audio:
- if args[1:]:
- audiofilename = args[1]
- else:
- audiofilename = 'film.aiff'
- else:
- audiofilename = None
-
- if norecord:
- filename = audiofilename = ''
-
- # Open video
- v = sv.OpenVideo()
- # Determine maximum window size based on signal standard
- param = [SV.BROADCAST, 0]
- v.GetParam(param)
- if param[1] == SV.PAL:
- x = SV.PAL_XMAX
- y = SV.PAL_YMAX
- elif param[1] == SV.NTSC:
- x = SV.NTSC_XMAX
- y = SV.NTSC_YMAX
- else:
- print 'Unknown video standard', param[1]
- sys.exit(1)
-
- gl.foreground()
- gl.maxsize(x, y)
- gl.keepaspect(x, y)
- gl.stepunit(8, 6)
- if width:
- height = width*3/4
- x1 = 150
- x2 = x1 + width-1
- y2 = 768-150
- y1 = y2-height+1
- gl.prefposition(x1, x2, y1, y2)
- win = gl.winopen(filename)
- if width:
- gl.maxsize(x, y)
- gl.keepaspect(x, y)
- gl.stepunit(8, 6)
- gl.winconstraints()
- x, y = gl.getsize()
- print x, 'x', y
-
- v.SetSize(x, y)
-
- if drop:
- param = [SV.FIELDDROP, 1, SV.GENLOCK, SV.GENLOCK_OFF]
- else:
- param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
- if mono or grey:
- param = param+[SV.COLOR, SV.MONO, SV.DITHER, 0, \
- SV.INPUT_BYPASS, 1]
- else:
- param = param+[SV.COLOR, SV.DEFAULT_COLOR, SV.INPUT_BYPASS, 0]
-
- v.BindGLWindow(win, SV.IN_REPLACE)
- v.SetParam(param)
-
- gl.qdevice(DEVICE.LEFTMOUSE)
- gl.qdevice(DEVICE.WINQUIT)
- gl.qdevice(DEVICE.WINSHUT)
- gl.qdevice(DEVICE.ESCKEY)
-
- help()
-
- while 1:
- dev, val = gl.qread()
- if dev == DEVICE.LEFTMOUSE:
- if val == 1:
- info = format, x, y, qsize, rate
- record(v, info, filename, audiofilename,\
- mono, grey, greybits, monotreshold, \
- fields, preallocspace)
- elif dev == DEVICE.REDRAW:
- # Window resize (or move)
- x, y = gl.getsize()
- print x, 'x', y
- v.SetSize(x, y)
- v.BindGLWindow(win, SV.IN_REPLACE)
- elif dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
- # Quit
- v.CloseVideo()
- gl.winclose(win)
- break
-
-
-# Record until the mouse is released (or any other GL event)
-# XXX audio not yet supported
-
-def record(v, info, filename, audiofilename, mono, grey, greybits, \
- monotreshold, fields, preallocspace):
- import thread
- format, x, y, qsize, rate = info
- fps = 59.64 # Fields per second
- # XXX (Strange: need fps of Indigo monitor, not of PAL or NTSC!)
- tpf = 1000.0 / fps # Time per field in msec
- if filename:
- vout = VFile.VoutFile(filename)
- if mono:
- format = 'mono'
- elif grey and greybits == 8:
- format = 'grey'
- elif grey:
- format = 'grey'+`abs(greybits)`
- else:
- format = 'rgb8'
- vout.setformat(format)
- vout.setsize(x, y)
- if fields:
- vout.setpf((1, -2))
- vout.writeheader()
- if preallocspace:
- print 'Preallocating space...'
- vout.prealloc(preallocspace)
- print 'done.'
- MAXSIZE = 20 # XXX should be a user option
- import Queue
- queue = Queue.Queue(MAXSIZE)
- done = thread.allocate_lock()
- done.acquire_lock()
- convertor = None
- if grey:
- if greybits == 2:
- convertor = imageop.grey2grey2
- elif greybits == 4:
- convertor = imageop.grey2grey4
- elif greybits == -2:
- convertor = imageop.dither2grey2
- thread.start_new_thread(saveframes, \
- (vout, queue, done, mono, monotreshold, convertor))
- if audiofilename:
- audiodone = thread.allocate_lock()
- audiodone.acquire_lock()
- audiostop = []
- initaudio(audiofilename, audiostop, audiodone)
- gl.wintitle('(rec) ' + filename)
- lastid = 0
- t0 = time.time()
- count = 0
- ids = []
- v.InitContinuousCapture(info)
- while not gl.qtest():
- try:
- cd, id = v.GetCaptureData()
- except sv.error:
- #time.sleep(0.010) # XXX is this necessary?
- sgi.nap(1) # XXX Try by Jack
- continue
- ids.append(id)
-
- id = id + 2*rate
-## if id <> lastid + 2*rate:
-## print lastid, id
- lastid = id
- count = count+1
- if fields:
- data1, data2 = cd.GetFields()
- cd.UnlockCaptureData()
- if filename:
- queue.put((data1, int(id*tpf)))
- queue.put((data2, int((id+1)*tpf)))
- else:
- data = cd.InterleaveFields(1)
- cd.UnlockCaptureData()
- if filename:
- queue.put((data, int(id*tpf)))
- t1 = time.time()
- gl.wintitle('(busy) ' + filename)
- print lastid, 'fields in', round(t1-t0, 3), 'sec',
- print '--', round(lastid/(t1-t0), 1), 'fields/sec'
- print 'Captured',count*2, 'fields,',
- print round(count*2/(t1-t0), 1), 'f/s',
- if lastid:
- print '(',
- print round(count*200.0/lastid), '%, or',
- print round(count*rate*200.0/lastid), '% of wanted rate )',
- print
- if ids:
- print 'Ids:',
- t0 = ids[0]
- del ids[0]
- for t1 in ids:
- print t1-t0,
- t0 = t1
- print
- if filename and audiofilename:
- audiostop.append(None)
- audiodone.acquire_lock()
- v.EndContinuousCapture()
- if filename:
- queue.put(None) # Sentinel
- done.acquire_lock()
- gl.wintitle('(done) ' + filename)
-
-
-# Thread to save the frames to the file
-
-def saveframes(vout, queue, done, mono, monotreshold, convertor):
- while 1:
- x = queue.get()
- if not x:
- break
- data, t = x
- if convertor:
- data = convertor(data, len(data), 1)
- elif mono and monotreshold >= 0:
- data = imageop.grey2mono(data, len(data), 1,\
- monotreshold)
- elif mono:
- data = imageop.dither2mono(data, len(data), 1)
- vout.writeframe(t, data, None)
- sys.stderr.write('Done writing video\n')
- vout.close()
- done.release_lock()
-
-
-# Initialize audio recording
-
-AQSIZE = 8000 # XXX should be a user option
-
-def initaudio(filename, stop, done):
- import thread, aifc
- afile = aifc.open(filename, 'w')
- afile.setnchannels(AL.MONO)
- afile.setsampwidth(AL.SAMPLE_8)
- params = [AL.INPUT_RATE, 0]
- al.getparams(AL.DEFAULT_DEVICE, params)
- print 'audio sampling rate =', params[1]
- afile.setframerate(params[1])
- c = al.newconfig()
- c.setchannels(AL.MONO)
- c.setqueuesize(AQSIZE)
- c.setwidth(AL.SAMPLE_8)
- aport = al.openport(filename, 'r', c)
- thread.start_new_thread(audiorecord, (afile, aport, stop, done))
-
-
-# Thread to record audio samples
-
-def audiorecord(afile, aport, stop, done):
- while not stop:
- data = aport.readsamps(AQSIZE/2)
- afile.writesampsraw(data)
- del data
- afile.close()
- print 'Done writing audio'
- done.release_lock()
-
-
-# Don't forget to call the main program
-
-try:
- main()
-except KeyboardInterrupt:
- print '[Interrupt]'