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#! /ufs/guido/bin/sgi/python
#! /ufs/guido/src/video/py
# Capture a CMIF movie using the Indigo video library and board
# Usage:
#
# makemovie [-q queuesize] [-t recordtime] [-a] [moviefile [audiofile]]
# Options:
#
# -q queuesize : set the capture queue size (default and max 16)
# -t recordtime : set the record time in seconds (default 5 seconds)
# -a : record audio as well
# moviefile : here goes the movie data (default film.video);
# the format is documented in cmif-film.ms
# audiofile : with -a, here goes the audio data (default film.aiff);
# 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
# User interface:
#
# Start the application. Resize the window to the desired movie size.
# Click the left mouse button to start recording (recording starts
# when you release the mouse button). Recording time is specified by
# the -t option (XXX this should change).
#
# Press ESC or select the window manager Quit or Close window option
# to quit. (You can do this without recording -- then the output
# files are untouched.)
#
# (It is possible to record more than once; but this doesn't set the
# time stamps correctly yet, and doesn't work at all with audio. So
# don't use.)
# XXX To do:
#
# fix timestamps for second and further recordings
# fix audio " " " " "
# flush audio buffer when recording starts
# make code more readable
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
def main():
QSIZE = 16
TIME = 5
audio = 0
opts, args = getopt.getopt(sys.argv[1:], 'aq:t:')
for opt, arg in opts:
if opt == '-a':
audio = 1
elif opt == '-q':
QSIZE = string.atoi(arg)
elif opt == '-t':
TIME = string.atoi(arg)
if args:
filename = args[0]
else:
filename = 'film.video'
if audio:
if args[1:]:
audiofilename = args[1]
else:
audiofilename = 'film.aiff'
gl.foreground()
x, y = SV.PAL_XMAX / 4, SV.PAL_YMAX / 4
print x, 'x', y
gl.minsize(40, 30)
gl.stepunit(8, 6)
gl.maxsize(SV.PAL_XMAX, SV.PAL_YMAX)
gl.keepaspect(SV.PAL_XMAX, SV.PAL_YMAX)
win = gl.winopen(filename)
x, y = gl.getsize()
print x, 'x', y
v = sv.OpenVideo()
v.BindGLWindow(win, SV.IN_REPLACE)
v.SetSize(x, y)
v.BindGLWindow(win, SV.IN_REPLACE)
v.SetCaptureFormat(SV.RGB_FRAMES)
v.SetCaptureMode(SV.BLOCKING_CAPTURE)
v.SetQueueSize(QSIZE)
v.InitCapture()
if v.GetQueueSize() != QSIZE:
QSIZE = v.GetQueueSize()
print 'Warning: QSIZE reduced to', QSIZE
gl.qdevice(DEVICE.LEFTMOUSE)
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
gl.qdevice(DEVICE.ESCKEY)
print 'Click left mouse to start recording', TIME, 'seconds'
ofile = None
afile = None
# Mouse down opens the file & freezes window
# Mouse up starts recording frames
while 1:
dev, val = gl.qread()
if dev == DEVICE.LEFTMOUSE:
# Start recording
if val == 1:
# Mouse down -- preparations
if ofile == None:
ofile = VFile.VoutFile().init(filename)
ofile.format = 'rgb8'
ofile.width = x
ofile.height = y
ofile.writeheader()
# XXX other format bits?
# The window can't be resized from now
gl.prefsize(x, y)
gl.winconstraints()
gl.wintitle('* ' + filename)
if audio:
afile = initaudio(audiofilename)
continue
# Mouse up -- start actual recording
global recording, stop_recording
if audio:
stop_recording = 0
recording.release()
t0 = time.millitimer()
v.StartCapture()
while 1:
t = time.millitimer() - t0
if t >= TIME*1000:
break
if v.GetCaptured() > 2:
doframe(v, ofile, x, y, t)
v.StopCapture()
stop_recording = 1
while v.GetCaptured() > 0:
doframe(v, ofile, x, y, t)
t = time.millitimer() - t0
gl.wintitle(filename)
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
if ofile:
ofile.close()
if afile:
afile.destroy()
posix._exit(0)
# EndCapture dumps core...
v.EndCapture()
v.CloseVideo()
gl.winclose(win)
def doframe(v, ofile, x, y, t):
cd, start = v.GetCaptureData()
data = cd.interleave(x, y)
cd.UnlockCaptureData()
ofile.writeframe(t, data, None)
AQSIZE = 16000
def initaudio(filename):
import thread, aiff
global recording, stop_recording
afile = aiff.Aiff().init(filename, 'w')
afile.nchannels = AL.MONO
afile.sampwidth = AL.SAMPLE_8
params = [AL.INPUT_RATE, 0]
al.getparams(AL.DEFAULT_DEVICE, params)
print 'rate =', params[1]
afile.samprate = params[1]
c = al.newconfig()
c.setchannels(AL.MONO)
c.setqueuesize(AQSIZE)
c.setwidth(AL.SAMPLE_8)
aport = al.openport(filename, 'r', c)
recording = thread.allocate_lock()
recording.acquire()
stop_recording = 0
thread.start_new_thread(recorder, (afile, aport))
return afile
def recorder(afile, aport):
# XXX recording more than one fragment doesn't work
# XXX (the thread never dies)
recording.acquire()
while not stop_recording:
data = aport.readsamps(AQSIZE/2)
afile.writesampsraw(data)
del data
main()
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