Added single frame capturing.
Added VCR synchronized capturing.
Added audio capturing (for continuous mode only).
Lots of internal and external improvements.
diff --git a/Demo/sgi/video/Vb.py b/Demo/sgi/video/Vb.py
index 92b3e061..da868f1 100755
--- a/Demo/sgi/video/Vb.py
+++ b/Demo/sgi/video/Vb.py
@@ -1,10 +1,9 @@
#! /ufs/guido/bin/sgi/python
-# Video bag-of-tricks
+# Video bag of tricks: record video(+audio) in various formats and modes
# XXX To do:
# - audio
-# - single frame recording
# - improve user interface
# - help button?
# - command line options to set initial settings
@@ -12,6 +11,7 @@
# - ...?
import sys
+import time
import getopt
import string
import os
@@ -29,6 +29,7 @@
import VFile
import VGrabber
import imageop
+sys.path.append('/ufs/jack/src/av/vcr')
ARROW = 0
WATCH = 1
@@ -43,27 +44,42 @@
StopCapture = 'StopCapture'
-Labels = ['rgb8', 'grey8', 'grey4', 'grey2', \
+VideoFormatLabels = ['Video off', 'rgb8', 'grey8', 'grey4', 'grey2', \
'grey2 dith', 'mono dith', 'mono thresh']
-Formats = ['rgb8', 'grey', 'grey4', 'grey2', \
- 'grey2', 'mono', 'mono']
+VideoFormats = ['', 'rgb8', 'grey', 'grey4', 'grey2', \
+ 'grey2', 'mono', 'mono']
+
+VideoModeLabels = ['Continuous', 'Burst', 'Single frame', 'VCR sync']
+[VM_CONT, VM_BURST, VM_SINGLE, VM_VCR] = range(1, 5)
+
+AudioFormatLabels = ['Audio off', \
+ '16 bit mono', '16 bit stereo', '8 bit mono', '8 bit stereo']
+[A_OFF, A_16_MONO, A_16_STEREO, A_8_MONO, A_8_STEREO] = range(1, 6)
class VideoBagOfTricks:
+ # Init/close stuff
+
def init(self):
formdef = flp.parse_form('VbForm', 'form')
flp.create_full_form(self, formdef)
- self.g_stop.hide_object()
+ self.g_cont.hide_object()
self.g_burst.hide_object()
+ self.g_single.hide_object()
+ self.g_vcr.hide_object()
self.setdefaults()
self.openvideo()
self.makewindow()
self.bindvideo()
- self.capturing = 0
self.showform()
fl.set_event_call_back(self.do_event)
return self
+ def close(self):
+ self.close_video()
+ self.close_audio()
+ raise SystemExit, 0
+
def showform(self):
# Get position of video window
gl.winset(self.window)
@@ -80,18 +96,39 @@
'Video Bag Of Tricks')
def setdefaults(self):
+ self.vcr = None
+ self.vout = None
+ self.capturing = 0
+ # Video defaults
+ self.vfile = 'film.video'
+ self.vmode = VM_CONT
self.mono_thresh = 128
- self.format = 'rgb8'
- self.c_format.clear_choice()
- for label in Labels:
- self.c_format.addto_choice(label)
- self.get_format()
+ self.vformat = 'rgb8'
+ self.c_vformat.clear_choice()
+ for label in VideoFormatLabels:
+ self.c_vformat.addto_choice(label)
+ self.c_vformat.set_choice(1 + VideoFormats.index(self.vformat))
+ self.c_vmode.clear_choice()
+ for label in VideoModeLabels:
+ self.c_vmode.addto_choice(label)
+ self.c_vmode.set_choice(self.vmode)
+ self.get_vformat()
self.b_drop.set_button(1)
- self.b_burst.set_button(0)
self.in_rate.set_input('2')
self.in_maxmem.set_input('1.0')
self.in_nframes.set_input('0')
- self.in_file.set_input('film.video')
+ self.in_nframes_vcr.set_input('1')
+ self.in_sleeptime.set_input('1.0')
+ # Audio defaults
+ self.aout = None
+ self.aport = None
+ self.afile = 'film.aiff'
+ self.aformat = A_OFF
+ self.c_aformat.clear_choice()
+ for label in AudioFormatLabels:
+ self.c_aformat.addto_choice(label)
+ self.c_aformat.set_choice(self.aformat)
+ self.get_aformat()
def openvideo(self):
try:
@@ -99,7 +136,6 @@
except sv.error, msg:
print 'Error opening video:', msg
self.video = None
- #sys.exit(1)
param = [SV.BROADCAST, SV.PAL]
if self.video: self.video.GetParam(param)
if param[1] == SV.PAL:
@@ -138,12 +174,6 @@
gl.qdevice(DEVICE.WINQUIT)
gl.qdevice(DEVICE.WINSHUT)
- def settitle(self):
- gl.winset(self.window)
- x, y = gl.getsize()
- title = 'Vb:' + self.in_file.get_input() + ' (%dx%d)' % (x, y)
- gl.wintitle(title)
-
def bindvideo(self):
if not self.video: return
x, y = gl.getsize()
@@ -167,16 +197,25 @@
gl.winset(self.window)
self.bindvideo()
+ def reset(self):
+ self.close_video()
+ self.close_audio()
+
+ # Event handler (catches resize of video window)
+
def do_event(self, dev, val):
#print 'Event:', dev, val
if dev in (DEVICE.WINSHUT, DEVICE.WINQUIT):
- self.cb_quit()
+ self.close()
if dev == DEVICE.REDRAW and val == self.window:
self.rebindvideo()
self.settitle()
- def cb_format(self, *args):
- self.get_format()
+ # Video controls: format, mode, file
+
+ def cb_vformat(self, *args):
+ self.reset()
+ self.get_vformat()
if self.mono_use_thresh:
s = `self.mono_thresh`
s = fl.show_input('Please enter mono threshold', s)
@@ -188,126 +227,151 @@
`self.mono_thresh`, '')
self.rebindvideo()
+ def cb_vmode(self, *args):
+ self.vmode = self.c_vmode.get_choice()
+ self.form.freeze_form()
+ self.g_cont.hide_object()
+ self.g_burst.hide_object()
+ self.g_single.hide_object()
+ self.g_vcr.hide_object()
+ if self.vmode == VM_CONT:
+ self.g_cont.show_object()
+ elif self.vmode == VM_BURST:
+ self.g_burst.show_object()
+ elif self.vmode == VM_SINGLE:
+ self.g_single.show_object()
+ elif self.vmode == VM_VCR:
+ self.g_vcr.show_object()
+ self.form.unfreeze_form()
+
+ def cb_vfile(self, *args):
+ filename = self.vfile
+ hd, tl = os.path.split(filename)
+ filename = fl.file_selector('Video save file:', hd, '', tl)
+ if filename:
+ self.reset()
+ hd, tl = os.path.split(filename)
+ if hd == os.getcwd():
+ filename = tl
+ self.vfile = filename
+
+ # Video mode specific video controls
+
def cb_rate(self, *args):
pass
def cb_drop(self, *args):
self.rebindvideo()
- def cb_burst(self, *args):
- if self.b_burst.get_button():
- self.in_rate.set_input('1')
- self.b_drop.set_button(1)
-## self.g_stop.hide_object()
- self.g_burst.show_object()
- else:
- self.in_rate.set_input('2')
- self.b_drop.set_button(0)
-## self.g_stop.show_object()
- self.g_burst.hide_object()
-
def cb_maxmem(self, *args):
pass
def cb_nframes(self, *args):
pass
- def cb_file(self, *args):
- filename = self.in_file.get_input()
- if filename == '':
- filename = 'film.video'
- self.in_file.set_input(filename)
- self.settitle()
+ def cb_fps(self, *args):
+ pass
- def cb_open(self, *args):
- filename = self.in_file.get_input()
+ def cb_nframes_vcr(self, *args):
+ pass
+
+ def cb_sleeptime(self, *args):
+ pass
+
+ # Audio controls: format, file
+
+ def cb_aformat(self, *args):
+ self.get_aformat()
+
+ def cb_afile(self, *args):
+ filename = self.afile
hd, tl = os.path.split(filename)
- filename = fl.file_selector('Select file:', hd, '', tl)
+ filename = fl.file_selector('Audio save file:', hd, '', tl)
if filename:
+ self.reset()
hd, tl = os.path.split(filename)
if hd == os.getcwd():
filename = tl
- self.in_file.set_input(filename)
- self.cb_file()
+ self.afile = filename
+
+ # General controls: capture, reset, play, quit
def cb_capture(self, *args):
- if not self.video:
- gl.ringbell()
- return
- if self.b_burst.get_button():
- self.burst_capture()
- else:
- self.cont_capture()
-
- def cb_stop(self, *args):
if self.capturing:
raise StopCapture
- gl.ringbell()
+ if not self.b_capture.get_button():
+ return
+ if not self.video or not self.vformat:
+ gl.ringbell()
+ return
+ if self.vmode == VM_CONT:
+ self.cont_capture()
+ elif self.vmode == VM_BURST:
+ self.burst_capture()
+ elif self.vmode == VM_SINGLE:
+ self.single_capture()
+ elif self.vmode == VM_VCR:
+ self.vcr_capture()
+
+ def cb_reset(self, *args):
+ self.reset()
def cb_play(self, *args):
- filename = self.in_file.get_input()
- sts = os.system('Vplay -q ' + filename + ' &')
+ sts = os.system('Vplay -q ' + self.vfile + ' &')
def cb_quit(self, *args):
- raise SystemExit, 0
+ self.close()
+
+ # Capture routines
def burst_capture(self):
self.setwatch()
gl.winset(self.window)
x, y = gl.getsize()
vformat = SV.RGB8_FRAMES
- try:
- nframes = string.atoi(self.in_nframes.get_input())
- except string.atoi_error:
- nframes = 0
+ nframes = self.getint(self.in_nframes, 0)
if nframes == 0:
- try:
- maxmem = \
- float(eval(self.in_maxmem.get_input()))
- except:
- maxmem = 1.0
+ maxmem = self.getint(self.in_maxmem, 1.0)
memsize = int(maxmem * 1024 * 1024)
- nframes = calcnframes(x, y, \
- self.mono or self.grey, memsize)
- print 'nframes =', nframes
- rate = string.atoi(self.in_rate.get_input())
- info = (vformat, x, y, nframes, rate)
+ nframes = self.calcnframes()
+ info = (vformat, x, y, nframes, 1)
try:
info2, data, bitvec = self.video.CaptureBurst(info)
except sv.error, msg:
- fl.show_message('Capture error:', str(msg), '')
+ self.b_capture.set_button(0)
self.setarrow()
+ fl.show_message('Capture error:', str(msg), '')
return
if info <> info2: print info, '<>', info2
self.save_burst(info2, data, bitvec)
self.setarrow()
+ def calcnframes(self):
+ gl.winset(self.window)
+ x, y = gl.getsize()
+ pixels = x*y
+ pixels = pixels/2 # XXX always assume fields
+ if self.mono or self.grey:
+ n = memsize/pixels
+ else:
+ n = memsize/(4*pixels)
+ return max(1, n)
+
def save_burst(self, info, data, bitvec):
(vformat, x, y, nframes, rate) = info
- self.open_file()
+ self.open_if_closed()
fieldsize = x*y/2
nskipped = 0
realframeno = 0
- tpf = 1000 / 50.0 #XXXX
- # Trying to find the pattern in frame skipping
- okstretch = 0
- skipstretch = 0
+ tpf = 1000 / 50.0 # XXX
for frameno in range(0, nframes*2):
if frameno <> 0 and \
bitvec[frameno] == bitvec[frameno-1]:
nskipped = nskipped + 1
- if okstretch:
- #print okstretch, 'ok',
- okstretch = 0
- skipstretch = skipstretch + 1
continue
- if skipstretch:
- #print skipstretch, 'skipped'
- skipstretch = 0
- okstretch = okstretch + 1
#
# Save field.
- # XXXX Works only for fields and top-to-bottom
+ # XXX Works only for fields and top-to-bottom
#
start = frameno*fieldsize
field = data[start:start+fieldsize]
@@ -315,33 +379,17 @@
fn = int(realframeno*tpf)
if not self.write_frame(fn, field):
break
- #print okstretch, 'ok',
- #print skipstretch, 'skipped'
- #print 'Skipped', nskipped, 'duplicate frames'
- self.close_file()
def cont_capture(self):
- self.setwatch()
- self.g_main.hide_object()
- self.open_file()
- vformat = SV.RGB8_FRAMES
- qsize = 1 # XXX Should be an option?
- try:
- rate = string.atoi(self.in_rate.get_input())
- except string.atoi_error:
- rate = 2
- x, y = self.vout.getsize()
- info = (vformat, x, y, qsize, rate)
- ids = []
- fps = 59.64 # Fields per second
+ saved_label = self.b_capture.label
+ self.b_capture.label = 'Stop\n' + saved_label
+ self.open_if_closed()
+ self.init_cont()
+ fps = 59.64 # Fields per second
# XXX (fps of Indigo monitor, not of PAL or NTSC!)
- tpf = 1000.0 / fps # Time per field in msec
- info2 = self.video.InitContinuousCapture(info)
- if info2 <> info:
- print 'Info mismatch: requested', info, 'got', info2
+ tpf = 1000.0 / fps # Time per field in msec
self.capturing = 1
- self.g_stop.show_object()
- self.setarrow()
+ self.start_audio()
while 1:
try:
void = fl.check_forms()
@@ -352,26 +400,101 @@
except sv.error:
sgi.nap(1)
continue
- ids.append(id)
- id = id + 2*rate
+ id = id + 2*self.rate
data = cd.InterleaveFields(1)
cd.UnlockCaptureData()
t = id*tpf
if not self.write_frame(t, data):
break
- self.setwatch()
- self.g_stop.hide_object()
+ self.stop_audio()
self.capturing = 0
- self.video.EndContinuousCapture()
- self.close_file()
- self.g_main.show_object()
- self.setarrow()
+ self.end_cont()
+ self.reset()
+ self.b_capture.label = saved_label
- def get_format(self):
- i = self.c_format.get_choice()
- label = Labels[i-1]
- format = Formats[i-1]
- self.format = format
+ def single_capture(self):
+ self.open_if_closed()
+ self.init_cont()
+ while 1:
+ try:
+ cd, id = self.video.GetCaptureData()
+ break
+ except sv.error:
+ pass
+ sgi.nap(1)
+ data = cd.InterleaveFields(1)
+ cd.UnlockCaptureData()
+ self.end_cont()
+ t = (self.nframes+1) * (1000/25)
+ return self.write_frame(t, data)
+
+ def vcr_capture(self):
+ if not self.vcr:
+ import VCR
+ try:
+ self.vcr = VCR.VCR().init()
+ except VCR.error, msg:
+ self.b_capture.set_button(0)
+ fl.show_message('VCR error', str(msg), '')
+ return
+ count = self.getint(self.in_nframes_vcr, 1)
+ if count <= 0: count = 1
+ sleeptime = self.getfloat(self.in_sleeptime, 1.0)
+ for i in range(count):
+ if i > 0:
+ time.sleep(sleeptime)
+ if not self.single_capture():
+ break
+ if not self.vcr.step():
+ break
+
+ # Init/end continuous capture mode
+
+ def init_cont(self):
+ qsize = 1
+ if self.vmode == VM_CONT:
+ self.rate = self.getint(self.in_rate, 2)
+ else:
+ self.rate = 2
+ x, y = self.vout.getsize()
+ info = (SV.RGB8_FRAMES, x, y, qsize, self.rate)
+ info2 = self.video.InitContinuousCapture(info)
+ if info2 <> info:
+ # XXX This is really only debug info
+ print 'Info mismatch: requested', info, 'got', info2
+
+ def end_cont(self):
+ self.video.EndContinuousCapture()
+
+ # Misc stuff
+
+ def settitle(self):
+ gl.winset(self.window)
+ x, y = gl.getsize()
+ title = 'Vb:' + self.vfile + ' (%dx%d)' % (x, y)
+ gl.wintitle(title)
+
+ def get_vformat(self):
+ i = self.c_vformat.get_choice()
+ label = VideoFormatLabels[i-1]
+ format = VideoFormats[i-1]
+ self.vformat = format
+ if self.vformat == '':
+ self.form.freeze_form()
+ self.g_video.hide_object()
+ self.g_cont.hide_object()
+ self.g_burst.hide_object()
+ self.g_single.hide_object()
+ self.form.unfreeze_form()
+ return
+ else:
+ self.g_video.show_object()
+ if self.vmode == VM_CONT:
+ self.g_cont.show_object()
+ elif self.vmode == VM_BURST:
+ self.g_burst.show_object()
+ elif self.vmode == VM_SINGLE:
+ self.g_single.show_object()
#
self.rgb = (format[:3] == 'rgb')
self.mono = (format == 'mono')
@@ -395,20 +518,40 @@
convertor = imageop.dither2grey2
self.convertor = convertor
- def open_file(self):
+ def get_aformat(self):
+ self.reset()
+ self.aformat = self.c_aformat.get_choice()
+ if self.aformat == A_OFF:
+ self.g_audio.hide_object()
+ else:
+ self.g_audio.show_object()
+
+ def open_if_closed(self):
+ if not self.vout:
+ self.open_video()
+ if not self.aout:
+ self.open_audio()
+
+ # File I/O handling
+
+ def open_video(self):
+ self.close_video()
gl.winset(self.window)
x, y = gl.getsize()
- self.cb_file() # Make sure filename is OK
- filename = self.in_file.get_input()
- vout = VFile.VoutFile().init(filename)
- vout.setformat(self.format)
+ vout = VFile.VoutFile().init(self.vfile)
+ vout.setformat(self.vformat)
vout.setsize(x, y)
- if self.b_burst.get_button():
+ if self.vmode == VM_BURST:
vout.setpf((1, -2))
vout.writeheader()
self.vout = vout
+ self.nframes = 0
+ self.t_nframes.label = `self.nframes`
def write_frame(self, t, data):
+ if not self.vout:
+ gl.ringbell()
+ return
if self.convertor:
data = self.convertor(data, len(data), 1)
elif self.mono:
@@ -420,37 +563,127 @@
data = imageop.dither2mono(data, \
len(data), 1)
try:
- self.vout.writeframe(t, data, None)
+ self.vout.writeframe(int(t), data, None)
except IOError, msg:
if msg == (0, 'Error 0'):
msg = 'disk full??'
fl.show_message('IOError', str(msg), '')
return 0
+ self.nframes = self.nframes + 1
+ self.t_nframes.label = `self.nframes`
return 1
- def close_file(self):
+ def close_video(self):
+ if not self.vout:
+ return
+ self.nframes = 0
+ self.t_nframes.label = ''
try:
self.vout.close()
except IOError, msg:
if msg == (0, 'Error 0'):
msg = 'disk full??'
fl.show_message('IOError', str(msg), '')
- del self.vout
+ self.vout = None
+
+ # Watch cursor handling
def setwatch(self):
gl.winset(self.form.window)
gl.setcursor(WATCH, 0, 0)
+ gl.winset(self.window)
+ gl.setcursor(WATCH, 0, 0)
def setarrow(self):
gl.winset(self.form.window)
gl.setcursor(ARROW, 0, 0)
+ gl.winset(self.window)
+ gl.setcursor(ARROW, 0, 0)
-def calcnframes(x, y, grey, memsize):
- pixels = x*y
- pixels = pixels/2 # XXX always assume fields
- if grey: n = memsize/pixels
- else: n = memsize/(4*pixels)
- return max(1, n)
+ # Numeric field handling
+
+ def getint(self, field, default):
+ try:
+ value = string.atoi(field.get_input())
+ except string.atoi_error:
+ value = default
+ field.set_input(`value`)
+ return value
+
+ def getfloat(self, field, default):
+ try:
+ value = float(eval(field.get_input()))
+ except:
+ value = float(default)
+ field.set_input(value)
+ return value
+
+ # Audio stuff
+
+ def open_audio(self):
+ if self.aformat == A_OFF:
+ return
+ import aifc
+ import al
+ import AL
+ import thread
+ self.close_audio()
+ params = [AL.INPUT_RATE, 0]
+ al.getparams(AL.DEFAULT_DEVICE, params)
+ rate = params[1]
+ self.aout = aifc.open(self.afile, 'w')
+ if self.aformat in (A_16_STEREO, A_8_STEREO):
+ nch = AL.STEREO
+ else:
+ nch = AL.MONO
+ if self.aformat in (A_16_STEREO, A_16_MONO):
+ width = AL.SAMPLE_16
+ else:
+ width = AL.SAMPLE_8
+ self.aout.setnchannels(nch)
+ self.aout.setsampwidth(width)
+ self.aout.setframerate(rate)
+ self.aout.writeframes('')
+ c = al.newconfig()
+ c.setqueuesize(8000)
+ c.setchannels(nch)
+ c.setwidth(width)
+ self.aport = al.openport('Vb audio record', 'r', c)
+ self.audio_stop = 0
+ self.audio_ok = 0
+ self.audio_busy = 1
+ thread.start_new_thread(self.record_audio, ())
+
+ def start_audio(self):
+ if self.aformat == A_OFF:
+ return
+ self.audio_ok = 1
+
+ def record_audio(self, *args):
+ # This function runs in a separate thread
+ # Currently no semaphores are used
+ while not self.audio_stop:
+ data = self.aport.readsamps(4000)
+ if self.audio_ok:
+ self.aout.writeframesraw(data)
+ data = None
+ self.audio_busy = 0
+
+ def stop_audio(self):
+ self.audio_ok = 0
+
+ def close_audio(self):
+ if self.aout:
+ self.audio_ok = 0
+ self.audio_stop = 1
+ while self.audio_busy:
+ time.sleep(0.1)
+ self.aout.close()
+ self.aout = None
+ if self.aport:
+ self.aport.closeport()
+ self.aport = None
+
try:
main()
diff --git a/Demo/sgi/video/VbForm.fd b/Demo/sgi/video/VbForm.fd
index e305612..1c0be37 100644
--- a/Demo/sgi/video/VbForm.fd
+++ b/Demo/sgi/video/VbForm.fd
@@ -7,14 +7,14 @@
=============== FORM ===============
Name: form
-Width: 350.000000
+Width: 450.000000
Height: 240.000000
-Number of Objects: 23
+Number of Objects: 33
--------------------
class: 1
type: 1
-box: 0.000000 0.000000 350.000000 240.000000
+box: 0.000000 0.000000 450.000000 240.000000
boxtype: 1
colors: 47 47
alignment: 4
@@ -27,174 +27,9 @@
argument:
--------------------
-class: 10000
-type: 0
-box: 0.000000 0.000000 0.000000 0.000000
-boxtype: 0
-colors: 5487 512
-alignment: 4
-style: 0
-size: 11.000000
-lcol: 0
-label:
-name: g_burst
-callback:
-argument:
-
---------------------
-class: 1
-type: 1
-box: 140.000000 10.000000 120.000000 120.000000
-boxtype: 1
-colors: 47 47
-alignment: 0
-style: 0
-size: 11.000000
-lcol: 0
-label:
-name:
-callback:
-argument:
-
---------------------
-class: 31
-type: 1
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name: b_play
callback: cb_play
argument: 0
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label:
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callback:
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