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My problem is not playing back video streams, well the video stream is received from a hardware which needs to be played back using DirectX in C#. As for the details of the stream,
1) MPEG2 Format (atleast according to to the hardware providers)
2) The first packet of the stream is a packet of size ranging from 250 - 350kb.
3) Next packet onwards which i assume are incremental packets of teh stream comes in smaller sizes like 12 - 20 kb.
i searched around for the C# but found only C++ code which i found very difficult to port as it used too much unmanaged code. I'm quite new DirectDraw but got to understand creation of primary and secondary surfaces. The video could be in YUV format which i am have to convert to RGB i think (which i don't know how). i need to write the bytes to secondary surface from the buffer of bytes received from the hardware.
I would be really grateful if anyone could atleast direct me to solve this problem. I have been really struggling to get some help from the net but to my dismay. Thanks in advance to any help in getting me to solve this problem
Arun Antony
Microsoft .NET Developer
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Arun,
The unmanaged code, is probably doing a lot of memory moves and using interprocess communication right?
Well the good news is you can do pretty much all of that in managed code but you will only be able to use the unmanaged code as a guideline. On the otherhand, you could convert it to a callable .NET DLL if you want that dependency.
I haven't done much MPEG video playback but I have dealt with reading Mp3 files which is part of MPEG2. Basically if you can read the file and then close or play it, you are halfway there. Adding the network component can then be layered in.
The DirectDraw API is built on GDI so to use it you should already be familar with GDI concepts. If not that's a good place to start.
Good luck
Mike Luster
CTI/IVR/Telephony SME
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I pray that this finds you well, and in the best of health and spirits. I am currently working on a project and want to know how can we obtain RTTI from a C file ( in .Net)? Reflection namespace is used for RTTI of classes and assemblies. but what about C files???
Day by Day Everyone is moving towards graveyard
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Because C is not an object oriented language there is no type information at all.
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
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Hi everybody!
I got a simple question:
i must create an application which automatically connect the computer to internet at startup.
How can i do something like that?
Thank you in advance
Enrico
VentoEngine corp.
Program your life ^^
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Hi..
I have a regular expression validation control called RegularExpressionValidator_FName. I'm want to create a global function in my Globals.cs class where I pass it this control so that I can set it's ValidationExpression to a global variable also saved in my Globals.cs class.
If the function is called ConcatenateRegExp(), then I would call it like ConcatenateRegExp(RegularExpressionValidator_FName); ??? If this is correct, I don't understand how the function definition would look like, meaning I don't what type the argument would be of. Would it be something like:
public void ConcatenateRegExp(System.Web.UI.WebControls myControl)
{
myControl.ValidationExpression = "\d";
}
Please can someone tell me if my call is correct, and that the function is correct.
Regards,
ma se
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Hi,
I created a web page program which can upload attachment.
My concern is the correct way to handle attachment in web.
What I am doing right now is if the user CLICK the ATTACHMENT BUTTON but not yet pressing the SUBMIT BUTTON (which is save) I am inserting the current information in my first table with a Temporary key in order for me to have a referrence in my Attachment File. Once the user Click the Attach Button in the ATTACH PAGE I will save the files in the attach table with the temporary key.
Once everyting is complete when the user CLICK the SUBMIT BUTTON I update both the temporary key to the STANDARD key.
Is what I am doing is correct?
BEFORE PRESSING SUBMIT BUTTON - USER CLICK ATTACHMENT BUTTON FROM MAIN PAGE
MainTable
Key = "tmp1"
User= "TestUser"
Information = "Test Information"
date = Datetime.Now;
AttachTable
Key = "tmp1"
User= "TestUser"
AttachFile= "test.xls"
date = Datetime.Now;
USER PRESSED SUBMIT BUTTON
MainTable
FROM Key = "tmp1"
NEW Key = "06030001"
User= "TestUser"
Information = "Test Information"
date = Datetime.Now;
AttachTable
FROM Key = "tmp1"
NEW Key = "06030001"
User= "TestUser"
AttachFile= "test.xls"
date = Datetime.Now;
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How can I display a HTML table in a winform control like textbox or lable or any other control? Please help me ASAP...
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If you're using .NET 2.0, you can use the WebBrowser[^] control to the display the table on your form or composite control.
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 .Net 1.1, Is there any way to do this over there?
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I have a crystal report done and I am trying to call that thru win forms.I use VS 2005 and C#.
I get one error msg telling 'Load report failed'.I have 2 parameters to pass to the report.I use a stored procedure for the report.My code is given below:
The line doc.load() which loads the report is showing the error:
if (cmbLocation.SelectedIndex == 0)
cmbLocation.SelectedValue = "NULL";
else
cmbLocation.SelectedValue = cmbLocation.SelectedItem.ToString();
if (cmbDept.SelectedIndex == 0)
cmbDept.SelectedValue = "NULL";
else
cmbDept.SelectedValue = cmbDept.SelectedItem.ToString();
string reportPath = Application.StartupPath + "\\" + "crAbsenceToday.rpt";
//Instantiate variables
CrystalDecisions.CrystalReports.Engine.ReportDocument doc = new CrystalDecisions.CrystalReports.Engine.ReportDocument();
ParameterField paramField = new ParameterField();
ParameterFields paramFields = new ParameterFields();
ParameterDiscreteValue paramDiscreteValue = new ParameterDiscreteValue();
//Set instances for input parameter 1 - @DEPTNAME
paramField.Name = "@DEPTNAME";
paramDiscreteValue.Value = cmbDept.SelectedValue;
paramField.CurrentValues.Add(paramDiscreteValue);
//Add the paramField to paramFields
paramFields.Add(paramField);
//Set instances for input parameter 2 - @LOC
paramField = new ParameterField();
paramField.Name = "@LOC";
paramDiscreteValue = new ParameterDiscreteValue();
paramDiscreteValue.Value = cmbLocation.SelectedValue ;
paramField.CurrentValues.Add(paramDiscreteValue);
//Add the paramField to paramFields
paramFields.Add(paramField);
crv1.ParameterFieldInfo = paramFields;
doc.Load(reportPath);
//Load the report by setting the report source
crv1.ReportSource = doc;
I am trying to solve this for the last 4 days...plz help me to sort it out. 
Thanks in advance.
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Hi,
In SharpDevelop 1, when it would "fold" a class, it would do it the same way it does a method, where the [...] was at the end of the declaration, like this:
public class TestClass [...]
Now, in SharpDevelop 2.0, when you fold a class, it just displays the [...], and hides the class declaration. That is very annoying, is there any way to change that?
Any help would be appreciated.
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I have the following code:
try
{
statusLabel.Text = "Attemting to connect...";
DataCon.Open();
....
}
Why dosn't "Attempting to connect..." show in the status bar until it has connected?
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Use Application.DoEvents()
<br />
try<br />
{<br />
statusLabel.Text = Attempting to connect..."; Application.DoEvents();<br />
DataCon.Open();<br />
}<br />
Basically calling the Application.DoEvents() forces your application to process everything up that point before proceeding to the next step in your code. Without it your user interface will appear to lock up until your done working with your data connection stuff. The other way to accomplish this would be to spawn your data connection stuff on another thread which then would make the main thread process the UI changes.
I reject your reality and substitute my own!
- Adam Savage, Mythbuster
-George W Bush
life is like a roll of toilet paper. The closer it gets to the end, the faster it goes.
My definition of an expert in any field is a person who knows enough about what's really going on to be scared.
- PJ Plauger
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Thanks! Thought it would be something small like that. Works fine now 
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the StatusBar component is a little tricky. Does your StatusBar have panels? If so you should be addressing the panel to which you want the data to appear. For example, say you had statusBar1 and statusBarPanel1 defined in your app. Use statusBarPanel1.Text = "blah blah blah".
Good luck
Mike Luster
CTI/IVR/Telephony SME
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I am trying to supply an hDC to a dll that needs a picture drawing area. I think i have 2 choices:
1. Use Form1 itself and just specify where the dll should draw the object.
2. Use a PictureBox1.
I do not understand the structures well enough to know if i can:
a. use the windowHandle of Form1 as an hDC.
--- Does the windowHandle qualify as an hDC? If not, how can i get a suitable hDC for Form1?
b. get the hDC of pictureBox1.
--- I need the hDC in an event-handler (a Form1 keypress event) that does not have access to an e argument that allows: hdc = e.Graphics.GetHdc(); .
All suggestions are welcome.
Thank you.
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A window handle cannot be used as a hDC (device context).
If you want to get the hDC for any control or form, use something similar to this:
Graphics g = [this/pictureBox1].CreateGraphics();
g.GetHdc();
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You'll need to give us more information about what you want and need to do before we can help. Your description is rather vague.
What re you using to create the line graph? What database engine are you proposing to use?. What is this 24 hour time contraint? etc...
Is this perhaps for an assignment, project, or real-world application? 
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
(Translation: I'll show you the way, but not write the code for you.)
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my problem is how can i tracks a server's response times and records the results of all monitoring requests into its built-in database. using Historic monitoring data and can analyzed for uptime/down time reports and trend analysis.
need help... thanks in advance.
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Don't reinvent the wheel if you don't need to. A Google search[^] for DB performance monitoring tools which use Windows Performance Monitor data shows that several are available.
If you really need to roll your own, then you'll need to research how to interect with the Perfomance Counters (just type in performance counters into the Code Project search bar at the top of the page for several articles on how to do this).
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
(Translation: I'll show you the way, but not write the code for you.)
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i am trying to get the ip address of host on windows application
thanks
openup your heart and let the sun shine in
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Try these search terms in The Code Project search...
ip address of host
You will find plenty of hits. One of them is bound to do what you want or at the very least point you in the right direction.
...Steve
1. quod erat demonstrandum
2. "Give a man a fish and you've fed him for a day. Teach him how to fish and you've fed him for life." I read that somewhere once
(Translation: I'll show you the way, but not write the code for you.)
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thanks for your reply Steve , i'll learn to fish
openup your heart and let the sun shine in
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