diff options
Diffstat (limited to 'Demo')
| -rwxr-xr-x | Demo/sgi/video/Vrecb.py | 82 |
1 files changed, 76 insertions, 6 deletions
diff --git a/Demo/sgi/video/Vrecb.py b/Demo/sgi/video/Vrecb.py index 2dcbe8e..43a5ddf 100755 --- a/Demo/sgi/video/Vrecb.py +++ b/Demo/sgi/video/Vrecb.py @@ -34,9 +34,10 @@ import sgi # Usage and help functions (keep this up-to-date if you change the program!) def usage(): - print 'Usage: Vrecb [options] [moviefile]' + print 'Usage: Vrecb [options] [moviefile [audiofile]]' print print 'Options:' + print '-a : record audio as well' print '-r rate : capture 1 out of every "rate" frames', \ '(default and min 1)' print '-w width : initial window width', \ @@ -66,6 +67,7 @@ def help(): def main(): format = SV.RGB8_FRAMES + audio = 0 rate = 1 width = 0 drop = 0 @@ -77,7 +79,7 @@ def main(): number = 60 try: - opts, args = getopt.getopt(sys.argv[1:], 'r:w:dg:mM:Gfn:') + opts, args = getopt.getopt(sys.argv[1:], 'ar:w:dg:mM:Gfn:') except getopt.error, msg: sys.stdout = sys.stderr print 'Error:', msg, '\n' @@ -86,6 +88,8 @@ def main(): try: for opt, arg in opts: + if opt == '-a': + audio = 1 if opt == '-r': rate = string.atoi(arg) if rate < 1: @@ -120,11 +124,11 @@ def main(): sys.exit(2) if not fields: - print '-f option assumed until Jack fixes it' + print '-f option assumed until somebody fixes it' fields = 1 if args[2:]: - sys.stderr.write('usage: Vrecb [options] [file]\n') + sys.stderr.write('usage: Vrecb [options] [file [audiofile]]\n') sys.exit(2) if args: @@ -132,6 +136,18 @@ def main(): 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 + v = sv.OpenVideo() # Determine maximum window size based on signal standard param = [SV.BROADCAST, 0] @@ -187,7 +203,8 @@ def main(): if dev == DEVICE.LEFTMOUSE: if val == 1: info = format, x, y, number, rate - record(v, info, filename, mono, grey, \ + record(v, info, filename, audiofilename, \ + mono, grey, \ greybits, monotreshold, fields) elif dev == DEVICE.REDRAW: # Window resize (or move) @@ -205,7 +222,8 @@ def main(): # Record until the mouse is released (or any other GL event) # XXX audio not yet supported -def record(v, info, filename, mono, grey, greybits, monotreshold, fields): +def record(v, info, filename, audiofilename, \ + mono, grey, greybits, monotreshold, fields): import thread format, x, y, number, rate = info fps = 59.64 # Fields per second @@ -214,6 +232,15 @@ def record(v, info, filename, mono, grey, greybits, monotreshold, fields): # # Go grab # + if audiofilename: + gl.wintitle('(start audio) ' + filename) + audiodone = thread.allocate_lock() + audiodone.acquire_lock() + audiostart = thread.allocate_lock() + audiostart.acquire_lock() + audiostop = [] + initaudio(audiofilename, audiostop, audiostart, audiodone) + audiostart.acquire_lock() gl.wintitle('(rec) ' + filename) try: ninfo, data, bitvec = v.CaptureBurst(info) @@ -241,6 +268,9 @@ def record(v, info, filename, mono, grey, greybits, monotreshold, fields): # # Save # + if filename and audiofilename: + audiostop.append(None) + audiodone.acquire_lock() if filename: # # Construct header and write it @@ -308,6 +338,46 @@ def record(v, info, filename, mono, grey, greybits, monotreshold, fields): vout.close() gl.wintitle('(done) ' + filename) +# Initialize audio recording + +AQSIZE = 8*8000 # XXX should be a user option + +def initaudio(filename, stop, start, done): + import thread, aiff + 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 'audio sampling 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) + thread.start_new_thread(audiorecord, (afile, aport, stop, start, done)) + + +# Thread to record audio samples + +# XXX should use writesampsraw for efficiency, but then destroy doesn't +# XXX seem to set the #samples in the header correctly + +def audiorecord(afile, aport, stop, start, done): + start.release_lock() + leeway = 4 + while leeway > 0: + if stop: + leeway = leeway - 1 + data = aport.readsamps(AQSIZE/8) +## afile.writesampsraw(data) + afile.writesamps(data) + del data + afile.destroy() + print 'Done writing audio' + done.release_lock() + # Don't forget to call the main program |