Vrec.py, Vrecb.py:
- call v.SetParam() after v.BindGLWindow()
- turn of dithering in mono/grey mode
- use prefposition to place the top left corner at (150, 150)
(so that the video remains visible during recording)
- default width is 256
Vcopy.py: correct typos; more verbose output.
OldVcopy.py: new name for Jack's old grabbing Vcopy.py.
Vstat.py: print values of all video parameters.
diff --git a/Demo/sgi/video/OldVcopy.py b/Demo/sgi/video/OldVcopy.py
new file mode 100755
index 0000000..63bbf71
--- /dev/null
+++ b/Demo/sgi/video/OldVcopy.py
@@ -0,0 +1,148 @@
+#! /ufs/guido/bin/sgi/python
+
+# Copy a video file, interactively, frame-by-frame.
+
+import sys
+import getopt
+from gl import *
+from DEVICE import *
+import VFile
+import VGrabber
+import string
+import imageop
+
+def report(time, iframe):
+ print 'Frame', iframe, ': t =', time
+
+def usage():
+ sys.stderr.write('usage: Vcopy [-t type] [-m treshold] [-a] infile outfile\n')
+ sys.stderr.write('-t Convert to other type\n')
+ sys.stderr.write('-a Automatic\n')
+ sys.stderr.write('-m Convert grey to mono with treshold\n')
+ sys.stderr.write('-d Convert grey to mono with dithering\n')
+ sys.exit(2)
+
+def help():
+ print 'Command summary:'
+ print 'n get next image from input'
+ print 'w write current image to output'
+
+class GrabbingVoutFile(VFile.VoutFile, VGrabber.VGrabber):
+ pass
+
+def main():
+ foreground()
+ try:
+ opts, args = getopt.getopt(sys.argv[1:], 't:am:d')
+ except getopt.error, msg:
+ print msg
+ usage()
+ if len(args) <> 2:
+ usage()
+ [ifile, ofile] = args
+ print 'open film ', ifile
+ ifilm = VFile.VinFile().init(ifile)
+ print 'open output ', ofile
+ ofilm = GrabbingVoutFile().init(ofile)
+
+ ofilm.setinfo(ifilm.getinfo())
+
+ use_grabber = 0
+ continuous = 0
+ tomono = 0
+ tomonodither = 0
+ for o, a in opts:
+ if o == '-t':
+ ofilm.format = a
+ use_grabber = 1
+ if o == '-a':
+ continuous = 1
+ if o == '-m':
+ if ifilm.format <> 'grey':
+ print '-m only supported for greyscale'
+ sys.exit(1)
+ tomono = 1
+ treshold = string.atoi(a)
+ ofilm.format = 'mono'
+ if o == '-d':
+ if ifilm.format <> 'grey':
+ print '-m only supported for greyscale'
+ sys.exit(1)
+ tomonodither = 1
+ ofilm.format = 'mono'
+
+ ofilm.writeheader()
+ #
+ prefsize(ifilm.width, ifilm.height)
+ w = winopen(ifile)
+ qdevice(KEYBD)
+ qdevice(ESCKEY)
+ qdevice(WINQUIT)
+ qdevice(WINSHUT)
+ print 'qdevice calls done'
+ #
+ help()
+ #
+ time, data, cdata = ifilm.getnextframe()
+ ifilm.showframe(data, cdata)
+ iframe = 1
+ report(time, iframe)
+ #
+ while 1:
+ if continuous:
+ dev = KEYBD
+ else:
+ dev, val = qread()
+ if dev in (ESCKEY, WINQUIT, WINSHUT):
+ break
+ if dev == REDRAW:
+ reshapeviewport()
+ elif dev == KEYBD:
+ if continuous:
+ c = '0'
+ else:
+ c = chr(val)
+ #XXX Debug
+ if c == 'R':
+ c3i(255,0,0)
+ clear()
+ if c == 'G':
+ c3i(0,255,0)
+ clear()
+ if c == 'B':
+ c3i(0,0,255)
+ clear()
+ if c == 'w' or continuous:
+ if use_grabber:
+ try:
+ data, cdata = ofilm.grabframe()
+ except VFile.Error, msg:
+ print msg
+ break
+ if tomono:
+ data = imageop.grey2mono(data, \
+ ifilm.width, ifilm.height, \
+ treshold)
+ if tomonodither:
+ data = imageop.dither2mono(data, \
+ ifilm.width, ifilm.height)
+ ofilm.writeframe(time, data, cdata)
+ print 'Frame', iframe, 'written.'
+ if c == 'n' or continuous:
+ try:
+ time,data,cdata = ifilm.getnextframe()
+ ifilm.showframe(data, cdata)
+ iframe = iframe+1
+ report(time, iframe)
+ except EOFError:
+ print 'EOF'
+ if continuous:
+ break
+ ringbell()
+ elif dev == INPUTCHANGE:
+ pass
+ else:
+ print '(dev, val) =', (dev, val)
+ ofilm.close()
+
+main()
diff --git a/Demo/sgi/video/README b/Demo/sgi/video/README
index 01a01d2..6abe698 100644
--- a/Demo/sgi/video/README
+++ b/Demo/sgi/video/README
@@ -4,6 +4,11 @@
This directory contains Python and C programs to manipulate files
containing digitized video in the "CMIF video format".
+An introduction to using the basic tools is in the file "video.doc".
+
+A description of the video file format is in the file "cmif-film.ms"
+(troff/nroff -ms input).
+
History
-------
diff --git a/Demo/sgi/video/Vcopy.py b/Demo/sgi/video/Vcopy.py
index f9c954a..e8d4f55 100755
--- a/Demo/sgi/video/Vcopy.py
+++ b/Demo/sgi/video/Vcopy.py
@@ -166,6 +166,7 @@
sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
return 1
+ print '=== input file ==='
vin.printinfo()
vout.setinfo(vin.getinfo())
@@ -187,7 +188,6 @@
if not ypf: ypf = vout.ypf
newpf = (xpf, ypf)
vout.setpf(newpf)
- scale = 1
if newwidth and newheight:
scale = 1
@@ -221,6 +221,7 @@
newwidth = newwidth / vout.xpf
newheight = newheight / vout.ypf
+ print '=== output file ==='
vout.printinfo()
vout.writeheader()
@@ -251,13 +252,14 @@
inwidth, inheight, newwidth, newheight)
if flip:
x0, y0 = 0, 0
- x1, y1 = newwidth-1, neheight-1
+ x1, y1 = newwidth-1, newheight-1
if vin.upside_down <> vout.upside_down:
y1, y0 = y0, y1
if vin.mirror_image <> vout.mirror_image:
x1, x0 = x0, x1
data = imageop.crop(data, vout.bpp/8, \
newwidth, newheight, x0, y0, x1, y1)
+ print 'Writing frame', nout
vout.writeframe(tout, data, cdata)
nout = nout + 1
diff --git a/Demo/sgi/video/Vrec.py b/Demo/sgi/video/Vrec.py
index e90a4bd..7b95aee 100755
--- a/Demo/sgi/video/Vrec.py
+++ b/Demo/sgi/video/Vrec.py
@@ -20,7 +20,7 @@
print '-r rate : capture 1 out of every "rate" frames', \
'(default and min 2)'
print '-w width : initial window width', \
- '(default interactive placement)'
+ '(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)'
@@ -184,7 +184,12 @@
gl.keepaspect(x, y)
gl.stepunit(8, 6)
if width:
- gl.prefsize(width, width*3/4)
+ 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)
@@ -201,12 +206,13 @@
else:
param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
if mono or grey:
- param = param+[SV.COLOR, SV.MONO, SV.INPUT_BYPASS, 1]
+ 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.SetParam(param)
v.BindGLWindow(win, SV.IN_REPLACE)
+ v.SetParam(param)
gl.qdevice(DEVICE.LEFTMOUSE)
gl.qdevice(DEVICE.WINQUIT)
diff --git a/Demo/sgi/video/Vrecb.py b/Demo/sgi/video/Vrecb.py
index 43a5ddf..ef7bc37 100755
--- a/Demo/sgi/video/Vrecb.py
+++ b/Demo/sgi/video/Vrecb.py
@@ -1,4 +1,3 @@
-#! /ufs/guido/bin/sgi/python-405
#! /ufs/guido/bin/sgi/python
# Capture a CMIF movie using the Indigo video library and board in burst mode
@@ -41,7 +40,7 @@
print '-r rate : capture 1 out of every "rate" frames', \
'(default and min 1)'
print '-w width : initial window width', \
- '(default interactive placement)'
+ '(default 256, use 0 for interactive placement)'
print '-d : drop fields if needed'
print '-g bits : greyscale (2, 4 or 8 bits)'
print '-G : 2-bit greyscale dithered'
@@ -69,7 +68,7 @@
format = SV.RGB8_FRAMES
audio = 0
rate = 1
- width = 0
+ width = 256
drop = 0
mono = 0
grey = 0
@@ -167,7 +166,12 @@
gl.keepaspect(x, y)
gl.stepunit(8, 6)
if width:
- gl.prefsize(width, width*3/4)
+ 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)
@@ -184,12 +188,13 @@
else:
param = [SV.FIELDDROP, 0, SV.GENLOCK, SV.GENLOCK_ON]
if mono or grey:
- param = param+[SV.COLOR, SV.MONO, SV.INPUT_BYPASS, 1]
+ 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.SetParam(param)
v.BindGLWindow(win, SV.IN_REPLACE)
+ v.SetParam(param)
gl.qdevice(DEVICE.LEFTMOUSE)
gl.qdevice(DEVICE.WINQUIT)
diff --git a/Demo/sgi/video/Vstat.py b/Demo/sgi/video/Vstat.py
new file mode 100755
index 0000000..cc0ecfb
--- /dev/null
+++ b/Demo/sgi/video/Vstat.py
@@ -0,0 +1,23 @@
+#! /ufs/guido/bin/sgi/python
+
+# Print the value of all video parameters
+
+import sys
+import sv, SV
+
+def main():
+ v = sv.OpenVideo()
+ for name in dir(SV):
+ const = getattr(SV, name)
+ if type(const) is type(0):
+ sys.stdout.flush()
+ params = [const, 0]
+ try:
+ v.GetParam(params)
+ except sv.error, msg:
+## print name, msg
+ continue
+ print name, params
+
+main()
+