diff options
Diffstat (limited to 'Demo')
| -rwxr-xr-x | Demo/sgi/video/Vplay.py | 317 |
1 files changed, 207 insertions, 110 deletions
diff --git a/Demo/sgi/video/Vplay.py b/Demo/sgi/video/Vplay.py index 1ad6713..5ab623d 100755 --- a/Demo/sgi/video/Vplay.py +++ b/Demo/sgi/video/Vplay.py @@ -1,77 +1,124 @@ +#! /ufs/guido/bin/sgi/python-405 +#! /ufs/guido/bin/sgi/python #! /usr/local/python # Play CMIF movie files -# Usage: -# -# Vplay [-L] [-M maginfy] [-m msec] [-q] [-r msec] [-s factor] [file] ... - - -# Options: -# -# -L : loop, playing the movie over and over again -# -M magnify : magnify the image by the given factor -# -m n : drop frames closer than n msec (default 0) -# -q : quiet, no informative messages -# -r n : regenerate input time base n msec apart -# -s speed : speed change factor after other processing (default 1.0) -# file ... : file(s) to play; default film.video +# Help function +def help(): + print 'Usage: Vplay [options] [file] ...' + print + print 'Options:' + print '-M magnify : magnify the image by the given factor' + print '-d : write some debug stuff on stderr' + print '-l : loop, playing the movie over and over again' + print '-m delta : drop frames closer than delta msec (default 0)' + print '-q : quiet, no informative messages' + print '-r delta : regenerate input time base delta msec apart' + print '-s speed : speed change factor (default 1.0)' + print '-t : use a 2nd thread for read-ahead' + print '-x left : window offset from left of screen' + print '-y top : window offset from top of screen' + print 'file ... : file(s) to play; default film.video' + print + print 'User interface:' + print 'Press the left mouse button to stop or restart the movie.' + print 'Press ESC or use the window manager Close or Quit command' + print 'to close the window and play the next file (if any).' -# User interface: -# -# Place the windo where you want it. The size is determined by the -# movie file and the -m option. -# -# Press ESC or select the window manager Quit or Close window option -# to close a window; if more files are given the window for the next -# file now pops up. Unless looping, the window closes automatically -# at the end of the movie. +# Imported modules import sys -sys.path.append('/ufs/guido/src/video') +sys.path.append('/ufs/guido/src/video') # Increase chance of finding VFile import VFile import time import gl, GL -from DEVICE import * +from DEVICE import REDRAW, ESCKEY, LEFTMOUSE, WINSHUT, WINQUIT import getopt import string # Global options -magnify = 1 +debug = 0 looping = 0 -speed = 1.0 +magnify = 1 mindelta = 0 +nowait = 0 quiet = 0 regen = None +speed = 1.0 +threading = 0 +xoff = yoff = None # Main program -- mostly command line parsing def main(): - global magnify, looping, speed, mindelta, quiet, regen - opts, args = getopt.getopt(sys.argv[1:], 'LM:m:qr:s:') - for opt, arg in opts: - if opt == '-L': - looping = 1 - elif opt == '-M': - magnify = string.atoi(arg) - elif opt == '-m': - mindelta = string.atoi(arg) - elif opt == '-q': - quiet = 1 - elif opt == '-r': - regen = string.atoi(arg) - elif opt == '-s': - speed = float(eval(arg)) - if not args: - args = ['film.video'] + global debug, looping, magnify, mindelta, nowait, quiet, regen, speed + global threading, xoff, yoff + + # Parse command line + try: + opts, args = getopt.getopt(sys.argv[1:], 'M:dlm:nqr:s:tx:y:') + except getopt.error, msg: + sys.stdout = sys.stderr + print 'Error:', msg, '\n' + help() + sys.exit(2) + + # Interpret options + try: + for opt, arg in opts: + if opt == '-M': magnify = string.atoi(arg) + if opt == '-d': debug = debug + 1 + if opt == '-l': looping = 1 + if opt == '-m': mindelta = string.atoi(arg) + if opt == '-n': nowait = 1 + if opt == '-q': quiet = 1 + if opt == '-r': regen = string.atoi(arg) + if opt == '-s': + try: + speed = float(eval(arg)) + except: + sys.stdout = sys.stderr + print 'Option -s needs float argument' + sys.exit(2) + if opt == '-t': + try: + import thread + threading = 1 + except ImportError: + print 'Sorry, this version of Python', + print 'does not support threads:', + print '-t ignored' + if opt == '-x': xoff = string.atoi(arg) + if opt == '-y': yoff = string.atoi(arg) + except string.atoi_error: + sys.stdout = sys.stderr + print 'Option', opt, 'require integer argument' + sys.exit(2) + + # Check validity of certain options combinations + if nowait and looping: + print 'Warning: -n and -l are mutually exclusive; -n ignored' + nowait = 0 + if xoff <> None and yoff == None: + print 'Warning: -x without -y ignored' + if xoff == None and yoff <> None: + print 'Warning: -y without -x ignored' + + # Process all files + if not args: args = ['film.video'] + sts = 0 for filename in args: - process(filename) + sts = (process(filename) or sts) + + # Exit with proper exit status + sys.exit(sts) # Process one movie file @@ -81,13 +128,13 @@ def process(filename): vin = VFile.VinFile().init(filename) except IOError, msg: sys.stderr.write(filename + ': I/O error: ' + `msg` + '\n') - return + return 1 except VFile.Error, msg: sys.stderr.write(msg + '\n') - return + return 1 except EOFError: sys.stderr.write(filename + ': EOF in video header\n') - return + return 1 if not quiet: print 'File: ', filename @@ -99,108 +146,145 @@ def process(filename): print 'Offset: ', vin.offset gl.foreground() - gl.prefsize(vin.width * magnify, vin.height * magnify) + + width, height = vin.width * magnify, vin.height * magnify + if xoff <> None and yoff <> None: + scrheight = gl.getgdesc(GL.GD_YPMAX) + gl.prefposition(xoff, xoff+width-1, \ + scrheight-yoff-height, scrheight-yoff-1) + else: + gl.prefsize(width, height) + win = gl.winopen(filename) - if quiet: - vin.quiet = 1 + gl.clear() + + if quiet: vin.quiet = 1 vin.initcolormap() gl.qdevice(ESCKEY) gl.qdevice(WINSHUT) gl.qdevice(WINQUIT) + gl.qdevice(LEFTMOUSE) - while 1: - stop = playonce(vin) - if stop or not looping: - break - - gl.wintitle('(done) ' + filename) + stop = 0 while not stop: - dev, val = gl.qread() - if dev in (ESCKEY, WINSHUT, WINQUIT): - stop = 1 - + gl.wintitle(filename) + stop = (playonce(vin) or nowait) + gl.wintitle('(done) ' + filename) + if not looping: + while not stop: + dev, val = gl.qread() + if dev == LEFTMOUSE and val == 1: + break # Continue outer loop + if dev == ESCKEY and val == 1 or \ + dev in (WINSHUT, WINQUIT): + stop = 1 + + # Set xoff, yoff for the next window from the current window + global xoff, yoff + xoff, yoff = gl.getorigin() + width, height = gl.getsize() + scrheight = gl.getgdesc(GL.GD_YPMAX) + yoff = scrheight - yoff - height gl.winclose(win) + return 0 + # Play a movie once; return 1 if user wants to stop, 0 if not def playonce(vin): - if vin.hascache: - vin.rewind() + vin.rewind() vin.colormapinited = 1 vin.magnify = magnify + if threading: + import thread + queue = [] + stop = [] + thread.start_new_thread(read_ahead, (vin, queue, stop)) + # Get the read-ahead thread going + while len(queue) < 5 and None not in queue: + time.millisleep(10) + tin = 0 told = 0 nin = 0 nout = 0 - nmissed = 0 + nlate = 0 nskipped = 0 + data = None - t0 = time.millitimer() + tlast = t0 = time.millitimer() while 1: - try: - tin, size, csize = vin.getnextframeheader() - except EOFError: - break - nin = nin+1 - if regen: - tout = nin * regen + if gl.qtest(): + dev, val = gl.qread() + if dev == ESCKEY and val == 1 or \ + dev in (WINSHUT, WINQUIT) or \ + dev == LEFTMOUSE and val == 1: + if debug: sys.stderr.write('\n') + if threading: + stop.append(None) + while len(stop) < 2: + time.millisleep(10) + return (dev != LEFTMOUSE) + if dev == REDRAW: + gl.reshapeviewport() + if data: vin.showframe(data, cdata) + if threading: + if not queue: + if debug: sys.stderr.write('.') + time.millisleep(10) + continue + q0 = queue[0] + if q0 == None: break + del queue[0] + tin, data, cdata = q0 else: - tout = tin - tout = int(tout / speed) - if tout - told < mindelta: try: - vin.skipnextframedata(size, csize) + tin, size, csize = vin.getnextframeheader() except EOFError: - print '[short data at EOF]' break + nin = nin+1 + if regen: tout = nin * regen + else: tout = tin + tout = int(tout / speed) + if tout - told < mindelta: nskipped = nskipped + 1 else: - told = tout - dt = tout + t0 - time.millitimer() - if dt < 0: - try: - vin.skipnextframedata(size, csize) - except EOFError: - print '[short data at EOF]' - break - nmissed = nmissed + 1 - else: + if not threading: try: - data, cdata = vin.getnextframedata \ - (size, csize) + data, cdata = \ + vin.getnextframedata(size, csize) except EOFError: - print '[short data at EOF]' + if not quiet: + print '[incomplete last frame]' break - dt = tout + t0 - time.millitimer() - if dt > 0: - time.millisleep(dt) - vin.showframe(data, cdata) - nout = nout + 1 - if gl.qtest(): - dev, val = gl.qread() - if dev in (ESCKEY, WINSHUT, WINQUIT): - return 1 - if dev == REDRAW: - gl.reshapeviewport() - if data: - vin.showframe(data, cdata) + now = time.millitimer() + dt = (tout-told) - (now-tlast) + told = tout + if debug: sys.stderr.write(`dt/10` + ' ') + if dt < 0: nlate = nlate + 1 + if dt > 0: + time.millisleep(dt) + now = now + dt + tlast = now + vin.showframe(data, cdata) + nout = nout + 1 t1 = time.millitimer() - if quiet: - return 0 + if debug: sys.stderr.write('\n') + + if quiet: return 0 print 'Recorded:', nin, 'frames in', tin*0.001, 'sec.', if tin: print '-- average', int(nin*10000.0/tin)*0.1, 'frames/sec', print - if nskipped: - print 'Skipped', nskipped, 'frames' + if nskipped: print 'Skipped', nskipped, 'frames' tout = t1-t0 print 'Played:', nout, @@ -208,12 +292,25 @@ def playonce(vin): if tout: print '-- average', int(nout*10000.0/tout)*0.1, 'frames/sec', print - if nmissed: - print 'Missed', nmissed, 'frames' + if nlate: print 'There were', nlate, 'late frames' return 0 +# Read-ahead thread + +def read_ahead(vin, queue, stop): + try: + while not stop: queue.append(vin.getnextframe()) + except EOFError: + queue.append(None) + stop.append(None) + + + # Don't forget to call the main program -main() +try: + main() +except KeyboardInterrupt: + print '[Interrupt]' |