SunVideoPlus: capture from both ports simultaneously

Hi all,
Is it possible to capture from both ports of a SunVideoPlus capture board simultaneously?
I have successfully created 2 frames, each for a media locator sunvideoplus://0/1 and sunvideoplus://0/2. When starting the capture, a video stream appears in one of the frames. The other displays a snapshot of the same stream. This makes me believe that only one port can be used at any one point.
Alternatively, has anyone worked with switching between ports at some high frequency, e.g. every 1/15 seconds or every second?
Thanks.
- Alex

I've got a similar problem in which I would like to process multiple streams from several webcams at once. I'm getting this popup thingy to choose the stream, but I would like java to be able to handle it.
Any idea?
Sorry no answer to your question, just another question :-)

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I have requirement to read data from device connected to frontend PC which will provide meter reading data.
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Unable to capture data from Serial port using LVRT2010 in single core pentium 4 machine

I am using application written in Labview using windows Labview
Runtime environment 2010. Application creates a tunnel to intercept data from
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Are both of the machines running the same runtime engine,
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Have you had RT applications running on this
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Is the development computer a 64bit machine?
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Is this realistic with one computer or would it be better to purchase additional units for capturing as well. And if I was using them primarily for the purpose of capturing as well as networking for the sake of speeding up compressor would any of the smaller systems be adequate?
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What Randy and David say is true.
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Late afternoon, I came into the house and on my way upstairs to take a shower and change for dinner, I noticed the laptop. The cover was closed. I had left it open. With my heart racing, I opened the lid and the computer woke up ...
Someone - (no one ever admitted to touching the machine - even under threats of withholding all ice cream) - closed the lid and the machine went to sleep. There was no capture as the temp file ended up without an EOF marker. All that I had to show for the day was a several hundred MB unrecoverable file.
The next day dawned with a foggy rain that hung on for the last few days of vacation ...
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Dear friend
I have a similar problem, did you got the answer...
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How to get data from serial port to GUI textArea

From Serial Port.....
Messages from base (always 5 bytes):
0xAA, 0, 0, 0, 0xBB - IDLE Mode
0xAA, 0, 0x80, 0x80, 0xBB - Question Mode
messages from terminal (always 6 bytes):
0xAA, a, b, c, chksum, 0xBB
where chksum = a+b+c;
a = address (0-250)
the 2 MSB's of b represenet the answer:
0 0 - A
0 1 - B
1 0 - C
1 1 - D
the 6LSB's of b and 8bits of c is the time for answer, in milliseconds.
(0-16384 milliseconds)
I have VB Code for that but I want the same thing in Java ...
Can any one help me?
Here's VB Code..
VERSION 5.00
Object = "{648A5603-2C6E-101B-82B6-000000000014}#1.1#0"; "MSCOMM32.OCX"
Begin VB.Form Form1
   BorderStyle     =   1 'Fixed Single
   Caption         =   "Aakar GUI"
   ClientHeight    =   4665
   ClientLeft      =   60
   ClientTop       =   375
   ClientWidth     =   6105
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   311
   ScaleMode       =   3 'Pixel
   ScaleWidth      =   407
   StartUpPosition =   3 'Windows Default
   Begin VB.CommandButton cmdPort
      Caption         =   "Open Port"
      Height          =   375
      Left            =   120
      TabIndex        =   4
      Top             =   600
      Width           =   1455
   End
   Begin VB.ComboBox cmbPort
      Height          =   315
      ItemData        =   "Form1.frx":0000
      Left            =   120
      List            =   "Form1.frx":0016
      Style           =   2 'Dropdown List
      TabIndex        =   3
      Top             =   120
      Width           =   2895
   End
   Begin VB.CommandButton cmdEnd
      Caption         =   "End"
      Height          =   495
      Left            =   1560
      TabIndex        =   2
      Top             =   1320
      Width           =   1215
   End
   Begin VB.CommandButton cmdStart
      Caption         =   "Start"
      Height          =   495
      Left            =   120
      TabIndex        =   1
      Top             =   1320
      Width           =   1215
   End
   Begin VB.TextBox txtMessage
      Height          =   2040
      Left            =   119
      MultiLine       =   -1 'True
      ScrollBars      =   3 'Both
      TabIndex        =   0
      Top             =   2475
      Width           =   5848
   End
   Begin VB.Timer tmrRead
      Enabled         =   0   'False
      Interval        =   1
      Left            =   2040
      Top             =   600
   End
   Begin MSCommLib.MSComm MSComm1
      Left            =   3120
      Top             =   360
      _ExtentX        =   1164
      _ExtentY        =   1164
      _Version        =   393216
      DTREnable       =   0   'False
      ParityReplace   =   45
      SThreshold      =   1
   End
   Begin VB.Label Label5
      Caption         =   "Result Data:"
      Height          =   375
      Left            =   120
      TabIndex        =   5
      Top             =   2115
      Width           =   1320
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim PortIsOpen As Boolean
Dim Answers(4) As String
Dim RejectKeystroke As Boolean
Private Sub cmbPort_Change()
Debug.Print cmbPort.ListIndex
End Sub
Private Sub cmbPort_Validate(Cancel As Boolean)
'Cancel = True
End Sub
Private Sub cmdEnd_Click()
MSComm1.Output = "e"
txtMessage.Text = ""
End Sub
Private Sub cmdPort_Click()
On Error GoTo ErrorHandler
If cmbPort.ListIndex < 0 Then Exit Sub
If PortIsOpen Then
    cmbPort.Enabled = True
    MSComm1.PortOpen = False
    PortIsOpen = False
    cmdPort.Caption = "Open Port"
    cmdStart.Enabled = False
    cmdEnd.Enabled = False
Else
    MSComm1.CommPort = cmbPort.ListIndex + 1
    cmbPort.Enabled = False
    MSComm1.PortOpen = True
    PortIsOpen = True
    cmdPort.Caption = "Close Port"
    cmdStart.Enabled = True
    cmdEnd.Enabled = True
End If
Exit Sub
ErrorHandler:
Debug.Print Err.Number
Debug.Print Err.Description
MsgBox Err.Description, vbExclamation Or vbOKOnly, "Error opening port"
cmbPort.Enabled = True
PortIsOpen = False
cmdPort.Caption = "Open Port"
cmdStart.Enabled = False
cmdEnd.Enabled = False
End Sub
Private Sub cmdStart_Click()
MSComm1.Output = "s"
txtMessage.Text = ""
End Sub
Private Sub Form_Initialize()
Dim tmp As Variant
tmp = InitCommonControls
End Sub
Private Sub Form_Load()
Answers(0) = "A"
Answers(1) = "B"
Answers(2) = "C"
Answers(3) = "D"
'MSComm1.Settings = "9600,n,8,1"
''MSComm1.Settings = "115200,n,8,1"
'MSComm1.PortOpen = True
On Error GoTo ErrorHandler1
MSComm1.CommPort = 1                    ' comm port 1
MSComm1.RThreshold = 1                  ' use 'on comm' event processing
MSComm1.Settings = "9600,n,8,1"         ' baud, parity, data bits, stop bits
MSComm1.SThreshold = 1                  ' allows us to track Tx LED
MSComm1.InputMode = comInputModeText    'comInputModeBinary ' binary mode, you can also use
                                        ' comInputModeText for text only use
PortIsOpen = False
cmbPort.ListIndex = 0
' open the port
MSComm1.PortOpen = True
cmbPort.Enabled = False
PortIsOpen = True
cmdPort.Caption = "Close Port"
cmdStart.Enabled = True
cmdEnd.Enabled = True
Exit Sub
ErrorHandler1:
Debug.Print Err.Description
PortIsOpen = False
cmbPort.Enabled = True
cmdPort.Caption = "Open Port"
cmdStart.Enabled = False
cmdEnd.Enabled = False
End Sub
Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
If MSComm1.PortOpen Then MSComm1.PortOpen = False
End Sub
Private Sub lblOption_Click()
End Sub
Private Sub MSComm1_OnComm()
' Synopsis:     Handle incoming characters, 'On Comm' Event
' Description: By setting MSComm1.RThreshold = 1, this event will fire for
'               each character that arrives in the comm controls input buffer.
'               Set MSComm1.RThreshold = 0 if you want to poll the control
'               yourself, either via a TImer or within program execution loop.
'               In most cases, OnComm Event processing shown here is the prefered
'               method of processing incoming characters.
    Dim i As Long
    Dim sBuff    As String           ' buffer for holding incoming characters
    Const MTC       As String = vbCrLf ' message terminator characters (ususally vbCrLf)
    Const LenMTC    As Long = 2         ' number of terminator characters, must match MTC
    Dim iPtr        As Long             ' pointer to terminatior character
    ' OnComm fires for multiple Events
    ' so get the Event ID & process
    Select Case MSComm1.CommEvent
        ' Received RThreshold # of chars, in our case 1.
        Case comEvReceive
            ' read all of the characters from the input buffer
            ' StrConv() is required when using MSComm in binary mode,
            ' if you set MSComm1.InputMode = comInputModeText, it's not required
            'sBuff = sBuff & StrConv(MSComm1.Input, vbUnicode)
            'If Len(txtMessage.Text) > 4096 Then txtMessage.Text = ""
            sBuff = MSComm1.Input
            Dim ch As String
            Dim PacketStart As Boolean
            Dim PacketLength As Integer
            Dim Packet() As String
            PacketStart = False
            PacketLength = 0
            While (Len(sBuff) > 0)
                ch = Left(sBuff, 1)
                If (ch = Chr(&HAA)) Then PacketStart = True
                If (ch = Chr(&HBB)) Then PacketStart = False
                If (ch <> Chr(&HAA) And ch <> Chr(&HBB)) Then
                    PacketLength = PacketLength + 1
                    ReDim Preserve Packet(PacketLength)
                    Packet(PacketLength) = ch
                End If
                'txtMessage.Text = txtMessage.Text + Format(Hex(Asc(ch)), " @@")
                sBuff = Right(sBuff, Len(sBuff) - 1)
            Wend
            If (PacketLength = 3) Then
                Debug.Print "Command packet recieved"
                'txtMessage.Text = txtMessage.Text + vbCrLf + "Address =" + Str(Asc(Packet(1)))
                'txtMessage.Text = txtMessage.Text + vbCrLf + "Address =" + Str(Asc(Packet(2)))
            End If
            If (PacketLength = 4) Then
                Debug.Print "Response packet recieved"
                txtMessage.Text = txtMessage.Text + "Address =" + Str(Asc(Packet(1))) + _
                    " Answer = " + Answers((Asc(Packet(2)) And &HC0) / 64) + _
                    " Time =" + Str((Asc(Packet(2)) And &H3F) * 256 + (Asc(Packet(3)))) + "mS" + vbCrLf
                'txtMessage.Text = txtMessage.Text + vbCrLf + "Address =" + Str(Asc(Packet(1)))
                'txtMessage.Text = txtMessage.Text + vbCrLf + "Option =" + Str((Asc(Packet(2)) And &HC0) / 64)
                'txtMessage.Text = txtMessage.Text + vbCrLf + "Time =" + Str((Asc(Packet(2)) And &H3F) * 256 + (Asc(Packet(3))))
            End If
            If (PacketLength <> 4 And PacketLength <> 3) Then Debug.Print "Unknown packet of length" + Str(PacketLength) + " recieved"
            txtMessage.Text = txtMessage.Text + vbCrLf
        ' An EOF charater was found in the input stream
        Case comEvEOF
            DoEvents
        ' There are SThreshold number of characters in the transmit buffer.
        Case comEvSend
            DoEvents
        ' A Break was received.
        Case comEventBreak
            DoEvents
        ' Framing Error
        Case comEventFrame
            DoEvents
        ' Data Lost.
        Case comEventOverrun
            DoEvents
        ' Receive buffer overflow.
        Case comEventRxOver
            DoEvents
        ' Parity Error.
        Case comEventRxParity
            DoEvents
        ' Transmit buffer full.
        Case comEventTxFull
        ' Unexpected error retrieving DCB]
        Case comEventDCB
            DoEvents
    End Select
End Sub
Private Sub tmrRead_Timer()
'MSComm1.Output = vbCrLf + vbCrLf
'MSComm1.Output = Chr(128)
End Sub
Private Sub txtMessage_KeyDown(KeyCode As Integer, Shift As Integer)
If Shift = 2 Or Shift = 4 Then RejectKeystroke = False Else RejectKeystroke = True
End Sub
Private Sub txtMessage_KeyPress(KeyAscii As Integer)
If RejectKeystroke Then
    KeyAscii = 0
End If
End SubThanks in advance..

I want to replicate the entire VB program as Java Program.
This has to be included in my project which i am doing in java.

How to save a datas from serial port?

How to save a datas from serial port?

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Hi. I can't capture from my cannon video camera to FInal Cut or iMovie. ANy help would be greatly appreciated. I don't think my iMac is recognizing the camera. I was told I don't need a firewire, that USB would work if I'm just capturing. If I need a firewire what kind (the one I was sold didn't fit). I'm getting an "unable to locate external device message". Not sure of next steps to try. Thanks.
Computer= iMac 21.5-inch: 2.5GHz
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SuperDrive, SDXC card slot, audio in, audio out, USB 2.0,FireWire 800, Thunderbolt, Gigabit Ethernet.
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High Definition
Power Consumption
4.3 W
Television System
NTSC
Video Recording system
MPEG2
Image Sensor
1/2.7-inch CMOS, RGB Primary Color Filter
Total Pixels
Approx. 2.96 Megapixels
Effective Pixels
Tape: HD/DV (16:9) mode: Approx 2.07 Megapixels (1920x1080) DV (4:3) mode: Approx 1.55 Megapixels (1440 x 1080) Card: (16:9) mode: Approx. 2.07 Megapixels (1920 x 1080), (4:3) mode: Approx. 2.76 Megapixels (1440 x 1080)
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Maximum recording Time
SP: 80 minutes, HDV, DV LP: 120 minutes DV
Lens
Zoom Ratio 10x Optical / 200x Digital Focal Length f=6.1-61mm (35mm equivalent: 43.6 - 436mm) Zoom Speed Variable / 3 Fixed Zoom Speeds Max. F/Stop f/1.8-3.0mm (when tapes are used)
Focusing System
Instant AF, TTL (through the lens)
Manual Exposure
Yes
Programmed AE
Auto, Program, Av, Tv, CINE, Portrait, Sports, Night, Snow, Beach, Sunset, Spotlight, Fireworks
Max Shutter Speed
Movie: 1/2000, Still image: 1/500
Auto Date/Time
Yes
Record Search/Review
Yes
Focusing System
10 mm (wide) / 1m (tele)
White Balance
Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Fluorescent H, Manual
Frame Rate
60i, Native 24p Progressive (records at 24p), 24p Progressive (records at 60i), 30p Progressive (records at 60i)
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0.2 lx (Night Mode)
Image Stabilization
SuperRange Optical (lens shift)
Filter Diameter
43mm
Viewfinder
Widescreen 0.27-inch Color Viewfinder / (Approx. 123,000 dots)
LCD Screen
2.7-inch Widescreen LCD (Approx. 211,000 dots)
Recording Media
High Definition Mini DV (recommended) (63 min) or MiniDV cassette
USB Terminal
USB 2.0 Full Speed
Video Terminal
component (output), composite (output)
Audio
DV: 16 bit (2ch) 48 kHz 12 bit (4ch) 32 kHz 4ch synchronous recording not possible HDV: MPEG1 Audio Layer II (2 ch) (4-channel playback of tapes containing 4-channel recordings possible)
Accessory Shoe
Advanced
Supplied Video Editing Software
None
HDMI Terminal
HDMI Type A (19 pins) Connector (output)
Microphone Terminal
3.5 mm stereo mini-jack
AV Mini Terminal/Headphone Terminal
3.5 mm 4 pole mini-jack (video/audio input and output)
Dimensions
(W X H X D) 3.5 x 3.2 x 5.4 in. (88 x 82 x 138mm)
Weight (not including lens and battery pack)
1.2 lbs. (535g)
Weight
1.4 lbs. (615g)

Forget USB for capturing from tape. USB is only for stills from a Tape Based camera.
You require a firewire cable.
The camera connection end will be four pin and the Mac is nine pin to the 800 port.
Ask for a 9 to 4 pin firewire cable. Sounds like you have the wrong one as they can also be 4 to 4 or 4 to 6 pin!!
Also you will need the correct Easy Setup in FCE so FCE talk to the camera, exactly which one depends on what type of footage is being sent to FCE from the camera during capture.
Al

Finally.... Video captured from applet in Vista!!

Hello!
Hurray!! finally I can see myself smiling and waving back in browser in Vista.
I mentioned in another thread just a day earlier that I will post a new topic if I succeed in capturing from applets in Vista, so thats what I am doing.... This thread is all about how achieved it.
I have seen many posts mentioning problems in capturing from applets in vista. I was also one of the sufferer. And most people including me blamed that on restricted sandbox of Vista. But surprisingly it was all about classpath.
I think I mentioned in some earlier thread that the 'Java console' shows the classpath to be *"{JREHOME}/classes"* instead of the classpath specified in CLASSPATH environment variable. You can check that by pressing 's' which *'dumps system and deployment properties'* in the Java Console. You can check the classpath by noting the value of *"java.class.path"* field which for my case was"C:\\PROGRA~1\\Java\\jre6\\classes". This turned out to be the main problem. The applet was not accessing any classes from the real CLASSPATH instead it was considering the classpath to be jrehome/classes. So, now I had enough hint what to do next. I simply created a folder 'classes' in {JREHOME} and copied the jmf registry files to that folder. By registry files I mean *'jmf.properties'* and *'jmf.properties.orig'* files in *'{JMF Install}/lib'* folder (actually i don't which among them has got some thing to do with the registry but I copied them both). So, after doing this, all my capture applets, whether signed or unsigned started running. Earlier they all were throwing *"java.lang.RuntimeException: No permission to capture from applets"* exception even after I have allowed capture from applets in JMF registry. That was perhaps not taking affect because of classpath issues. So, thats the story.... if someone faces the same problem he can use this workaround or you can say hack ;-)
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ans: Yes, infact all my jmf applications were running correctly, the problem was only with the applets.
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also.
3- Is this problem really Vista specific?
ans: Can't say... but it can be. It maybe the case that Vista does not allow access to real CLASSPATH, but this problem can easily be my system specific, it would be called a general vista problem if this happens on all Vista systems, I need volunteers for this test. captfoss, can you please test this on your system? :)
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific.
Drawbacks of this work around:
1- This can be a pain for ordinary users , copying registry files from JMF/lib to JRE/classes.
2- Whatever you change in JMF registry would not be effective to the applets. As the old registry files are to be replaced with new registry files every time JMF registry is changed for changes to take effect in applets.
The real big question:
How can we force Vista to look in the real CLASSPATH? this is the real question, if this can be done just by changing some settings then all this workaround is useless :) I am looking forward to the answer of this question.....
captfoss, I would highly appreciate your comments.
Thanks for reading this rather long post.... :)
Thanks!

A couple of comments here...the answer is, in fact, no, you didn't set your classpath correctly. One, you're probably using a JAR file to run your applet from (I'm not an applet programmer but I do believe that a JAR is required) which do not use the environment's classpath, they use their manifest classpath. No, the applet was not jared.
Second, I believe that the browser itself specifies its own classpath, which you cannot modify. I believe this would be considered a security feature...Both IE7 and firefox3 fail.
"You have little control over the CLASSPATH used by a browser for an Applet"
[http://mindprod.com/jgloss/classpath.html]
Ok this maybe the reason, I will go through the link....
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also. There isn't a "real" CLASSPATH, there is just the classpath stored as an environmental variable. It's no more or less real than the one in the browser.Thats what I thought.... but I think {JREHOME}/classes is the default class path used by the jre whether we set any CLASSPATH variable or not it would be there, something of that sort.....
Lots of possibilities, but my best guess is that Vista doesn't let code running in the browser read environmental variables.Yes, I fully agree with this. I think I should file a bug report.
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific. Definately not. It would apply to any code that wants to access something on the classpath. You are right... as I said I would test it, I tested by making a small library, added it to classpath, made an application and an applet. As expected, the aplication worked while the applet failed.
Any application with a custom classpath would be affected.I don't understand what you mean here, do you mean 'Class-path' header in jar manifest?
I like the "installation requirement" part. I'd suggest looking into that. Alternately, there may be something in the security settings to allow access to environmental variables.I will try to look into both.
I just tried this statement in applet:
System.out.println( System.getProperty( "java.class.path" ) );It threw this exception:
Exception: java.security.AccessControlException: access denied (java.util.PropertyPermission java.class.path read)
I don't know what conclusion should I draw from this... this does mean applet has no right to know what the classpath is.... but this doesn't mean even jre plugin responsible for running applet does not know what the classpath is :)
Finally, I want to say that due to some problems I could not post earlier, and I may not post for few more days. But I appreciate your comments and would appreciate more of them.
Thanks!

Capturing multiple DV sources simultaneously?

Can I capture from multiple DV sources (not HDV) simultaneously with Final Cut Express?
I want to record a live event using two DV camcorders.
PowerMac G5 1.8GHz, 1GB RAM Mac OS X (10.3.9)

Not into a single computer. You need two computers.
Is it possible using a faster PowerMac or with Final Cut Pro?

How to store the data captured from oscilloscope into the MS Access database table

Hi All,
In my application, I tried to save the data captured from SCOPE, but could store only 200 bytes. I've taken the Memo data type for the field in database. I want to store all data ( 4 channels) in one field & retrieve back and display on the XY Graph.
Thanks in advance.
Regards,
Shrini

kramish wrote:
Im pretty sure that Access does support JDBCNo it does not. It supports ODBC.
just doing a quick Google came up with some pages:
http://blog.taragana.com/index.php/archive/access-microsoft-access-database-from-java-using-jdbc-odbc-bridge-sample-code/
http://www.javaworld.com/javaworld/javaqa/2000-09/03-qa-0922-access.html
Both articles explains how to use the jdbc-odbc bridge. I think I've seen a pure jdbc driver for access but it wasn't from Microsoft and it wasn't free.
Kaj

SunVideoPlus: capture from both ports simultaneously

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