I have been at this for quite a while. I am using C# for Serious Game Programing, and am working on the SoundManager code found in Chapter 9 of the book, if you want an exact reference. The Code is setting up a sound manager using OpenAl, and I am having a problem with the Alut interface (if that is the right word for what it is). Here is the code that I am working on:
public void LoadSound(string soundId, string path)
{
int buffer = -1;
Al.alGenBuffers(1, out buffer);
int errorCode = Al.alGetError();
System.Diagnostics.Debug.Assert(errorCode == Al.AL_NO_ERROR);
int format;
float frequency;
int size;
System.Diagnostics.Debug.Assert(File.Exists(path));
IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
//System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
//System.Diagnostics.Debug.Assert(data != IntPtr.Zero));
//System.Diagnostics.Debug.Write(errorCode2);
Al.alBufferData(buffer, format, data, size, (int)frequency);
_soundIdentifier.Add(soundId, new SoundSource(buffer, path));
}
The issue is this line right here: System.Diagnostics.Debug.Assert(data != IntPtr.Zero));. When this line is not commented out, it always fails. I did have it work, and do not know what I did to change it, and it stopped working. I have posted about this on another post here: Load sound problem in OpenAL
I have looked all over, and from what I can gather, the issue is with the way that OpenAl is working on my system. To that end, I have uninstalled the Tao Framework that I am using to run OpenAl, and reinstalled. I have also done a system restore to as many points as I have back. I have thought about nuking my whole system, and starting fresh, but a want to avoid this if I can.
I Also have found this link http://distro.ibiblio.org/rootlinux/rootlinux-ports/more/freealut/freealut-1.1.0/doc/alut.html#ErrorHandling that has helped me understand more about Alut, but have been unable to get an alut.dll from it, and cannot get any errors to display. This code:
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
//System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
System.Diagnostics.Debug.Write(errorCode2);
Is my attempt to find out the exact error. If I write the code like:
int errorCode2 = Alut.alutGetError();
//string errorCodeString = Alut.alutGetErrorString(errorCode2);
System.Diagnostics.Debug.Assert(errorCode2 != Alut.ALUT_ERROR_NO_ERROR);
System.Diagnostics.Debug.Write(errorCode2);
I may be using the code all wrong to the find the exact error, as I am still learning c#.
Here is what I am looking for:
1)Is this a syntax error or an error with my system
2)If it is an error in my system, are there files that I am not removing when I try to do an uninstall of OpenAL to refresh all the files.
3)How do I get the alutGetError() code to display in such a way that I can actually read what it is.
Thank you for any help beforehand.
I recently ran into the same problem while going through that book and was able to figure it out by logging the error to the output window, notice I through the console.writeline in there.
After doing that I checked the output window which gave me the error code 519. After looking all over I saw a few forum posts recommending I re-install openAl to fix this issue which did the trick, all the links I found didn't work to the download so I had to hunt around but softTonic had the one that worked for me on my windows 7 machine http://openal.en.softonic.com/download
IntPtr data = Alut.alutLoadMemoryFromFile(path, out format, out size, out frequency);
var error= Alut.alutGetError();
Console.WriteLine(error);
//System.Diagnostics.Debug.Assert(data != IntPtr.Zero);
Hope this helps,
helpdevelop
Related
I'm making a windows form application using Visual Studio. The application allows you to enter the what you want the photo to be named, and then saves that image to a specific location on the network. It works great when I use it on my laptop. However, when I try to run it on the a desktop, it does not work. Instead I get the message:
System.Runtime.InteropServices.COMException (0x80040217): No
combination of intermediate filters could be found to make the
connection.
at DirectShowLib.DsError.ThrowExceptionForHR(Int32 hr)
at OrderProductCapture.Capture.SetupGraph(DsDevice dev, Int32 iWidth,
Int32 iHeight, Int16 iBPP, Control hControl)
at OrderProductCapture.Capture.ctor(Int32 iDeviceNum, Int32 iWidth,
Int32 iHeight, Int16 iBPP, Control hControl)
at OrderProductCapture.frmMain.ctor()
The Call Stack says:
OrderProductCapture.exe!OrderProductCapture.Capture(int iDeviceNum, int iWidth, int iHeight, short iBPP, System.Windows.Forms.Control hControl) Line 82
OrderProductCapture.exe!OrderProductCapture.frmMain.frmMain() Line 50
OrderProductCapture.exe!OrderProductCapture.Program.Main() Line 19
I have already googled this many times, and I've looked at most of the similar questions on SO. Both computers are using Windows 7 professional. Any help would be fantastic.
This is the code where my code catches the exception. I do not think the code is wrong, because it works fine on my laptop.
public Capture(int iDeviceNum, int iWidth, int iHeight, short iBPP, Control hControl)
{
DsDevice [] capDevices;
// Get the collection of video devices
capDevices = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice);
if (iDeviceNum + 1 > capDevices.Length)
{
throw new Exception("No video capture devices found at that index!");
}
try
{
// Set up the capture graph
SetupGraph( capDevices[iDeviceNum], iWidth, iHeight, iBPP, hControl);
// tell the callback to ignore new images
m_PictureReady = new ManualResetEvent(false);
}
catch
{
Dispose();
throw;
}
}
When having to convert between media formats, you can programmatically force it to use some specific filter chain and configure it tightly to your needs, but DirectSHOW also has the ability of "guessing" the right tools to use. It knows all the tiny media handlers that are oficially installed in the OS, and tries to match them so that final required "conversion" is built.
However, DirectShow still needs those tiny converters to be installed. DS is able to analyze and connect them, but will not provide you any support for exotic media types. Often, even non-exotic can be problematic if the OS is "fresh-n-clean".
If I remember correctly, that error basically means that (on this problematic machine) some "codecs" are missing.
These things often come with any:
drivers for webcams/microphones/soundcards
audio-processing software (sound editors, media recorders, media players, ..)
"codec packs" like CCCP (really, don't get confused by their logo)
specific codec/filter packages
(...)
First thing I'd now do would be:
recall what I tried to convert
try to read all error messages and logs and find out if there's some faulty filter mentioned, maybe it needs reinstalling
compare what audio-related software is installed on machines where the program WORKS versus the problematic machine
basing on the above, try to deduce what codec is missing
find it, download, install
Also, you may read the code of SetupGraph() function. I bet there's a clear reference to the format that is being used, and this may point out what codec is missing.
Codecs also sometimes get damaged (actually not themselves, but their configuration and registration entries may get damaged). If you are sure that the correct codecs are available on the machine, reinstalling or "repairing" (if they have such option) them can help.
Okay. Well, I know this question has a good chance of being closed within the first 10 minutes, but I am going to ask it anyways for I have spent almost day and an half trying to find a solution. Still, I can't figure this one out. There is not much info on this on the Internet not even on the HASP (safenet) website although they have demos.
I have a HASP HL USB dongle. I try to convert their demo and test run it but for the life of me I simply can't get it to login even. It keeps raising Aladdin.HASP.HaspStatus.HaspDotNetDllBroken exception.
However, if I run the C version of their demo, it works perfectly.
Here is the Csharp version of my code:
Aladdin.HASP;
HASP myHasp = new HASP();
var thestatus = myHasp.Login(vender_code);
myHasp.Logout;
I would like to login to USB HASP and get its HaspID and the settings in its memory.
Thanks in advance,
It might be that you aren't having all dependencies for the HASP runtime. I'm packing with the app:
hasp_windows_NNNNN.dll (NNNNN = your number)
hasp_net_windows.dll
MSVCR71.DLL (added manually)
msvc runtime 80
One runtime library is required by HASP and it doesn't tell you which one unless you put it in the DEPENDS.EXE utility (you probably have you on your Visual Studio installation).
To log in (and read some bytes):
byte[] key = new byte[16];
HaspFeature feature = HaspFeature.FromFeature(4);
string vendorCode = "your vendor string, get it from your tools";
Hasp hasp = new Hasp(feature);
HaspStatus status = hasp.Login(vendorCode);
if (HaspStatus.StatusOk != status)
{
// no license to run
return false;
}
else
{
// read some memory here
HaspFile mem = hasp.GetFile(HaspFileId.ReadOnly);
mem.Read(key, 0, 16);
status = hasp.Logout();
if (HaspStatus.StatusOk != status)
{
//handle error
}
}
Hope it helps. My HASPed software works like a charm. BTW, wasn't able to put envelope around .NET app under no combination of settings.
I'm looking for help from anyone who's worked with the verbot sdk.
I'm making a program that I want to use the LearnedKnowledge.vkb, Teacher.vkb, and any standard bot (julia, for example). Those who've used this before will know that with the rules in Teacher, you can essentially write responses to things that the bot doesn't understand, and train it on the fly.
I'm planning on using speech recognition and text-to-speech, but my problem right now is that after I load the knowledgebases, I can't seem to get any response from the bot.
Here's what I have: The Verbot5Library.dll, from verbots.sourceforge.net (I got the editor and player too, to make sure the files were working). In my program, I set up the variables as such:
Verbot5Engine verbot = new Verbot5Engine();
KnowledgeBase kb = new KnowledgeBase();
KnowledgeBaseItem kbi = new KnowledgeBaseItem();
State state = new State();
XMLToolbox xmlToolboxKB = new XMLToolbox(typeof(KnowledgeBase));
Then I initialize the verbot engine and load the kbs:
// using the xmlToolboxKB method I saw in this forum: http://www.verbots.com/forums/viewtopic.php?t=2984
kbi.Fullpath = #"C:\\[full path to kb...]\\";
kbi.Filename = "LearnedKnowledge.vkb";
kb = (KnowledgeBase)xmlToolboxKB.LoadXML(kbi.Fullpath + kbi.Filename);
verbot.AddKnowledgeBase(kb, kbi);
kbi.Filename = "julia.vkb";
kb = (KnowledgeBase)xmlToolboxKB.LoadXML(kbi.Fullpath + kbi.Filename);
verbot.AddKnowledgeBase(kb, kbi);
//trying to use LoadKnowledgeBase and LoadCompiledKnowledgeBase methods: verbot.LoadKnowledgeBase("C:\\[full path to kb...]\\LearnedKnowledge.vkb");
//verbot.LoadCompiledKnowledgeBase("C:\\[full path...]\\julia.ckb");
//verbot.LoadCompiledKnowledgeBase("C:\\[full path...]\\Teacher.ckb");
// set up state
state.CurrentKBs.Add("C:\\[full path...]\\LearnedKnowledge.vkb");
state.CurrentKBs.Add("C:\\[full path...]\\Teacher.vkb");
state.CurrentKBs.Add("C:\\[full path...]\\julia.ckb");
Finally, I attempt to get a response from the verbot engine:
Reply reply = verbot.GetReply("hello", state);
if (reply != null)
Console.WriteLine(reply.AgentText);
else
Console.WriteLine("No reply found.");
I know julia has a response for "hello", as I've tested it with the editor. But all it ever returns is "No reply found". This code has been taken from the example console program in the SDK download (as very little documentation is available). That's why I need some pointers from someone who's familiar with the SDK.
Am I not loading the KBs correctly? Do they all need to be compiled (.ckb) instead of the XML files (.vkb)? I've used the verbot.OnKnowledgeBaseLoadError event handler and I get no errors. I even removed the resource file Default.vsn needed to load the Teacher, and it throws an error when trying to load it so I'm pretty sure it's all loading correctly. So why do I always get "No reply found"?
resolved: see http://www.verbots.com/forums/viewtopic.php?p=13021#13021
I've been working on this one quite a bit and haven't gotten any closer to a solution.
I juut dug up my old copy of the WindowsHookLib again - It's available with source at http://www.codeproject.com/KB/DLL/WindowsHookLib.aspx. This library allows Global Windows Mouse/Keyboard/Clipboard Hooks, which is very useful.
I'm trying to use the Mouse Hook in here to Capture Mouse-Motion (I could use a Timer that always polls Cursor.Position, but I plan on using more features of WindowsHookLib later).
Code as follows:
MouseHook mh = new MouseHook();
mh.InstallHook();
mh.MouseMove += new EventHandler<WindowsHookLib.MouseEventArgs>(mh_MouseMove);
But on the call to InstallHook(), I get an Exception: "The specified Module could not be found". Strange. Searching, I found that someone thought this occurs because a DLL is not in a place included in the Windows PATH variable, and because placing it in system32 didn't help I went the whole hog and translated the thing to C# for inclusion directly in my project (I was curious how it works).
However the error was obstinately persistent, so I dug a bit on this, and found the Code in the Library that is responsible: In InstallHook(), we have
IntPtr hinstDLL = Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]);
this._hMouseHook = UnsafeNativeMethods.SetWindowsHookEx(14, this._mouseProc, hinstDLL, 0);
if (this._hMouseHook == IntPtr.Zero)
{
throw new MouseHookException(new Win32Exception(Marshal.GetLastWin32Error()).Message);
}
And this (after modification and recompile) tells me that what I'm really getting is a Windows error "ERROR_MOD_NOT_FOUND"! Now, Here I'm stumped. Didn't I just compile the Hook Library directly into my project?
(UnsafeMethods.SetWindowsHookEx is just a DllImported Method from user32)
Any Answers, or Prods in the right direction, or any hints, pointers or similar are very much appreciated!
I found when migrating to .NET 4.0 I had to send in IntPtr.Zero for the hMod parameter when the Hook Procedure was in the local assembly. You can refer to the msdn documentation here.
http://msdn.microsoft.com/en-us/library/ms644990%28VS.85%29.aspx
I am also having this problem. I found that it seems to be to do with the version of .Net you are using. .Net 4 you get this error, change to .Net 3.5 and it works.
Expanding on #MichaelWohltman's answer above (no code) here's an exmple of its implementation for Kaeyboard hook:
/// <summary>
/// Installs the keyboard hook for this application.
/// </summary>
public void InstallHook()
{
if (this._hKeyboardHook == IntPtr.Zero)
{
this._keyboardProc = new KeyboardHook.KeyboardMessageEventHandler(KeyboardProc);
IntPtr hinstDLL = Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]);
this._hKeyboardHook = UnsafeNativeMethods.SetWindowsHookEx(UnsafeNativeMethods.WH_KEYBOARD_LL, this._keyboardProc, IntPtr.Zero, 0);
if (this._hKeyboardHook == IntPtr.Zero)
{
// Failed to hook. Throw a HookException
throw new Exception("That fucking exception!");
//int eCode = Marshal.GetLastWin32Error();
//this._keyboardProc = null;
//throw new WindowsHookException(new Win32Exception(eCode).Message);
}
else
{
this.OnStateChanged(new WindowsHookLib.StateChangedEventArgs(this.State));
}
}
}
The line of interest is:
this._hKeyboardHook = UnsafeNativeMethods.SetWindowsHookEx(UnsafeNativeMethods.WH_KEYBOARD_LL, this._keyboardProc, IntPtr.Zero, 0);
note the ItrPtr.Zero replaces hinstDLL
Interestingly, I was having problems with a Framework 3.5 build. It was rather complicated as it was a plugin/class library for another application, but this replacement seemed to solve the problem.
Im looking for a way to delete Windows restore points using C# perhaps by invoking WMI.
Any code snippet would be very helpful.
Touching on what Morten said you can use that API. WMI doesn't provide a method to delete a Restore Point as far as I can tell. The SRRemoveRestorePoint can remove a restore point, provided you have the sequence number. You can get that through WMI. Here is my code to Remove a restore point.
[DllImport("Srclient.dll")]
public static extern int SRRemoveRestorePoint(int index);
private void button1_Click(object sender, EventArgs e)
{
int SeqNum = 335;
int intReturn = SRRemoveRestorePoint(SeqNum);
}
I just threw in 335 since that was the farthest one back as I could find on my system. Its likely that the count starts at 1 and keeps incrementing. so it isn't as simple as just having an index like you would in an array.
As for getting the sequence numbers, I converted the code from Microsoft to C# which will give you that info. Be sure to add System.Management as a reference. Otherwise this code won't work right.
private void EnumRestorePoints()
{
System.Management.ManagementClass objClass = new System.Management.ManagementClass("\\\\.\\root\\default", "systemrestore", new System.Management.ObjectGetOptions());
System.Management.ManagementObjectCollection objCol = objClass.GetInstances();
StringBuilder Results = new StringBuilder();
foreach (System.Management.ManagementObject objItem in objCol)
{
Results.AppendLine((string)objItem["description"] + Convert.ToChar(9) + ((uint)objItem["sequencenumber"]).ToString());
}
MessageBox.Show(Results.ToString());
}
I tested this on my box (Vista by the way) and it worked without issue. Also have to be running as Admin, but I think you figured that.
While I know nothing about WMI, this resource might get you started. It does not directly touch your issue, but perhaps it can be useful somehow. Anyhow, it seems that the relevant Win32/COM function is SRRemoveRestorePoint. I hope this was of any use.
Alternatively, you can work with VBScript, if you're so inclined.