mirror of
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7e47402264
comments, docstrings or error messages. I fixed two minor things in
test_winreg.py ("didn't" -> "Didn't" and "Didnt" -> "Didn't").
There is a minor style issue involved: Guido seems to have preferred English
grammar (behaviour, honour) in a couple places. This patch changes that to
American, which is the more prominent style in the source. I prefer English
myself, so if English is preferred, I'd be happy to supply a patch myself ;)
413 lines
9.8 KiB
Python
Executable file
413 lines
9.8 KiB
Python
Executable file
#! /usr/bin/env python
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#! /ufs/guido/bin/sgi/python-405
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# Capture a CMIF movie using the Indigo video library and board
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# The CMIF video file format is documented in cmif-film.ms.
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# Audio data is recorded in AIFF format, using the input sampling
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# rate, source and volume set by the audio panel, in mono, 8
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# bits/sample.
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# Usage and help functions (keep this up-to-date if you change the program!)
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def usage():
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print 'Usage: Vrec [options] [moviefile [audiofile]]'
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print
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print 'Options:'
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print '-a : record audio as well'
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print '-q queuesize : set the capture queue size (default 2)'
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print '-r rate : capture 1 out of every "rate" frames', \
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'(default and min 2)'
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print '-w width : initial window width', \
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'(default 256, use 0 for interactive placement)'
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print '-n : Don\'t write to file, only timing info'
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print '-d : drop fields if needed'
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print '-g bits : greyscale (2, 4 or 8 bits)'
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print '-G : 2-bit greyscale dithered'
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print '-m : monochrome dithered'
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print '-M value : monochrome thresholded with value'
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print '-f : Capture fields (in stead of frames)'
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print '-P frames : preallocate space for "frames" frames'
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print 'moviefile : here goes the movie data (default film.video)'
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print 'audiofile : with -a, here goes the audio data', \
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'(default film.aiff)'
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def help():
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print 'Press the left mouse button to start recording, release it to'
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print 'end recording. You can record as many times as you wish, but'
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print 'each recording overwrites the output file(s) -- only the last'
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print 'recording is kept.'
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print
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print 'Press ESC or use the window manager Quit or Close window option'
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print 'to quit. If you quit before recording anything, the output'
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print 'file(s) are not touched.'
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# Imported modules
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import sys
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sys.path.append('/ufs/guido/src/video')
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import sv, SV
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import VFile
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import gl, GL, DEVICE
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import al, AL
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import time
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import posix
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import getopt
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import string
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import imageop
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import sgi
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# Main program
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def main():
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format = SV.RGB8_FRAMES
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qsize = 2
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audio = 0
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rate = 2
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width = 0
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norecord = 0
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drop = 0
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mono = 0
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grey = 0
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greybits = 0
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monotreshold = -1
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fields = 0
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preallocspace = 0
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# Parse command line
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:')
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except getopt.error, msg:
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sys.stdout = sys.stderr
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print 'Error:', msg, '\n'
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usage()
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sys.exit(2)
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# Interpret options
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try:
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for opt, arg in opts:
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if opt == '-a':
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audio = 1
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elif opt == '-q':
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qsize = string.atoi(arg)
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elif opt == '-r':
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rate = string.atoi(arg)
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if rate < 2:
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sys.stderr.write( \
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'-r rate must be >= 2\n')
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sys.exit(2)
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elif opt == '-w':
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width = string.atoi(arg)
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elif opt == '-n':
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norecord = 1
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elif opt == '-d':
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drop = 1
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elif opt == '-g':
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grey = 1
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greybits = string.atoi(arg)
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if not greybits in (2, 4, 8):
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sys.stderr.write( \
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'Only 2, 4 or 8 bit greyscale supported\n')
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sys.exit(2)
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elif opt == '-G':
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grey = 1
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greybits = -2
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elif opt == '-m':
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mono = 1
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elif opt == '-M':
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mono = 1
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monotreshold = string.atoi(arg)
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elif opt == '-f':
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fields = 1
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elif opt == '-P':
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preallocspace = string.atoi(arg)
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except string.atoi_error:
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sys.stdout = sys.stderr
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print 'Option', opt, 'requires integer argument'
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sys.exit(2)
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# Check excess arguments
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# If norecord is on, refuse filename arguments
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if norecord:
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if args:
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sys.stdout = sys.stderr
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print 'With -n, no filename arguments are used\n'
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usage()
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sys.exit(2)
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elif args[2:]:
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sys.stdout = sys.stderr
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print 'Too many filename arguments\n'
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usage()
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sys.exit(2)
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# Process file arguments
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if args:
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filename = args[0]
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else:
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filename = 'film.video'
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if args[1:] and not audio:
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sys.stderr.write('-a turned on by appearance of 2nd file\n')
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audio = 1
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if audio:
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if args[1:]:
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audiofilename = args[1]
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else:
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audiofilename = 'film.aiff'
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else:
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audiofilename = None
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if norecord:
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filename = audiofilename = ''
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# Open video
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v = sv.OpenVideo()
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# Determine maximum window size based on signal standard
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param = [SV.BROADCAST, 0]
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v.GetParam(param)
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if param[1] == SV.PAL:
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x = SV.PAL_XMAX
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y = SV.PAL_YMAX
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elif param[1] == SV.NTSC:
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x = SV.NTSC_XMAX
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y = SV.NTSC_YMAX
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else:
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print 'Unknown video standard', param[1]
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sys.exit(1)
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gl.foreground()
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gl.maxsize(x, y)
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gl.keepaspect(x, y)
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gl.stepunit(8, 6)
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if width:
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height = width*3/4
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x1 = 150
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x2 = x1 + width-1
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y2 = 768-150
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y1 = y2-height+1
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gl.prefposition(x1, x2, y1, y2)
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win = gl.winopen(filename)
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if width:
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gl.maxsize(x, y)
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gl.keepaspect(x, y)
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gl.stepunit(8, 6)
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gl.winconstraints()
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x, y = gl.getsize()
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print x, 'x', y
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v.SetSize(x, y)
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if drop:
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param = [SV.FIELDDROP, 1, SV.GENLOCK, SV.GENLOCK_OFF]
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else:
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param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
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if mono or grey:
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param = param+[SV.COLOR, SV.MONO, SV.DITHER, 0, \
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SV.INPUT_BYPASS, 1]
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else:
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param = param+[SV.COLOR, SV.DEFAULT_COLOR, SV.INPUT_BYPASS, 0]
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v.BindGLWindow(win, SV.IN_REPLACE)
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v.SetParam(param)
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gl.qdevice(DEVICE.LEFTMOUSE)
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gl.qdevice(DEVICE.WINQUIT)
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gl.qdevice(DEVICE.WINSHUT)
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gl.qdevice(DEVICE.ESCKEY)
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help()
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while 1:
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dev, val = gl.qread()
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if dev == DEVICE.LEFTMOUSE:
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if val == 1:
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info = format, x, y, qsize, rate
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record(v, info, filename, audiofilename,\
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mono, grey, greybits, monotreshold, \
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fields, preallocspace)
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elif dev == DEVICE.REDRAW:
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# Window resize (or move)
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x, y = gl.getsize()
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print x, 'x', y
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v.SetSize(x, y)
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v.BindGLWindow(win, SV.IN_REPLACE)
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elif dev in (DEVICE.ESCKEY, DEVICE.WINQUIT, DEVICE.WINSHUT):
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# Quit
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v.CloseVideo()
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gl.winclose(win)
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break
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# Record until the mouse is released (or any other GL event)
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# XXX audio not yet supported
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def record(v, info, filename, audiofilename, mono, grey, greybits, \
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monotreshold, fields, preallocspace):
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import thread
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format, x, y, qsize, rate = info
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fps = 59.64 # Fields per second
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# XXX (Strange: need fps of Indigo monitor, not of PAL or NTSC!)
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tpf = 1000.0 / fps # Time per field in msec
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if filename:
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vout = VFile.VoutFile(filename)
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if mono:
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format = 'mono'
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elif grey and greybits == 8:
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format = 'grey'
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elif grey:
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format = 'grey'+`abs(greybits)`
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else:
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format = 'rgb8'
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vout.setformat(format)
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vout.setsize(x, y)
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if fields:
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vout.setpf((1, -2))
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vout.writeheader()
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if preallocspace:
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print 'Preallocating space...'
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vout.prealloc(preallocspace)
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print 'done.'
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MAXSIZE = 20 # XXX should be a user option
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import Queue
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queue = Queue.Queue(MAXSIZE)
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done = thread.allocate_lock()
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done.acquire_lock()
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convertor = None
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if grey:
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if greybits == 2:
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convertor = imageop.grey2grey2
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elif greybits == 4:
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convertor = imageop.grey2grey4
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elif greybits == -2:
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convertor = imageop.dither2grey2
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thread.start_new_thread(saveframes, \
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(vout, queue, done, mono, monotreshold, convertor))
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if audiofilename:
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audiodone = thread.allocate_lock()
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audiodone.acquire_lock()
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audiostop = []
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initaudio(audiofilename, audiostop, audiodone)
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gl.wintitle('(rec) ' + filename)
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lastid = 0
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t0 = time.time()
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count = 0
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ids = []
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v.InitContinuousCapture(info)
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while not gl.qtest():
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try:
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cd, id = v.GetCaptureData()
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except sv.error:
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#time.sleep(0.010) # XXX is this necessary?
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sgi.nap(1) # XXX Try by Jack
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continue
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ids.append(id)
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id = id + 2*rate
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## if id <> lastid + 2*rate:
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## print lastid, id
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lastid = id
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count = count+1
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if fields:
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data1, data2 = cd.GetFields()
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cd.UnlockCaptureData()
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if filename:
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queue.put((data1, int(id*tpf)))
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queue.put((data2, int((id+1)*tpf)))
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else:
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data = cd.InterleaveFields(1)
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cd.UnlockCaptureData()
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if filename:
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queue.put((data, int(id*tpf)))
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t1 = time.time()
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gl.wintitle('(busy) ' + filename)
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print lastid, 'fields in', round(t1-t0, 3), 'sec',
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print '--', round(lastid/(t1-t0), 1), 'fields/sec'
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print 'Captured',count*2, 'fields,',
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print round(count*2/(t1-t0), 1), 'f/s',
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if lastid:
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print '(',
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print round(count*200.0/lastid), '%, or',
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print round(count*rate*200.0/lastid), '% of wanted rate )',
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print
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if ids:
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print 'Ids:',
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t0 = ids[0]
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del ids[0]
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for t1 in ids:
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print t1-t0,
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t0 = t1
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print
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if filename and audiofilename:
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audiostop.append(None)
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audiodone.acquire_lock()
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v.EndContinuousCapture()
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if filename:
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queue.put(None) # Sentinel
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done.acquire_lock()
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gl.wintitle('(done) ' + filename)
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# Thread to save the frames to the file
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def saveframes(vout, queue, done, mono, monotreshold, convertor):
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while 1:
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x = queue.get()
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if not x:
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break
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data, t = x
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if convertor:
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data = convertor(data, len(data), 1)
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elif mono and monotreshold >= 0:
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data = imageop.grey2mono(data, len(data), 1,\
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monotreshold)
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elif mono:
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data = imageop.dither2mono(data, len(data), 1)
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vout.writeframe(t, data, None)
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sys.stderr.write('Done writing video\n')
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vout.close()
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done.release_lock()
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# Initialize audio recording
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AQSIZE = 8000 # XXX should be a user option
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def initaudio(filename, stop, done):
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import thread, aifc
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afile = aifc.open(filename, 'w')
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afile.setnchannels(AL.MONO)
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afile.setsampwidth(AL.SAMPLE_8)
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params = [AL.INPUT_RATE, 0]
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al.getparams(AL.DEFAULT_DEVICE, params)
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print 'audio sampling rate =', params[1]
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afile.setframerate(params[1])
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c = al.newconfig()
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c.setchannels(AL.MONO)
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c.setqueuesize(AQSIZE)
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c.setwidth(AL.SAMPLE_8)
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aport = al.openport(filename, 'r', c)
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thread.start_new_thread(audiorecord, (afile, aport, stop, done))
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# Thread to record audio samples
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def audiorecord(afile, aport, stop, done):
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while not stop:
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data = aport.readsamps(AQSIZE/2)
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afile.writesampsraw(data)
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del data
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afile.close()
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print 'Done writing audio'
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done.release_lock()
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# Don't forget to call the main program
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try:
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main()
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except KeyboardInterrupt:
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print '[Interrupt]'
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