Develop Bugs

Silvermoon crashing

Hi guys
I've just started working with Silvermoon. When testing the demo app (as well as my own app) on my HD2, it works fine for 6 times, but when I start the app for the 7th time, it crashes without any message.
Has anyone else had this problem? Any ideas?
Any help would be appreciated!
Thanks, Rob

I don't have these problems on my HD. It looks like some resources are not cleaned up at application exit. Do you call 'Screen.Close();' when exiting the application?
edit:
As you're using an HD2 you don't have the libGLES_cm.dll and I assume you have copied the one of the demo. This is a software implementation and could also be the reason of running out of memory. The OpenGLES 1.x dll on GLES2 devices is called something like libGLESv1.dll. To use OpenGLES in a managed application/library the methods have to be imported from the dll and the dll name has to be defined at compile time. So, take a look at the silvermoon sources and if you find dllimport(...) using libGLES_cm.dll you'll have to replace this dll name with libGLESv1.dll (look up the correct name in your /windows directory) and rebuild framework.
(had to do that in my OpenGL test app for gles2 devices)
edit2:
Had a quick look into the silvermoon sources and for gles2 devices it has to be recompiled after changing the dll names:
in Silvermoon\OpenGL\Native\
egl.cs: change const string LibGlesDllName = "libgles_cm.dll"; to ... = "libEGL.dll"
gl.cs: change const string LibGlesDllName = "libgles_cm.dll"; to ... = "libGLESv1.dll"
(the egl dll could also be changed to "libGLESv1.dll" just in case this doesn't work)
You'll need VS2008 to compile the solution.

Hello heliosdev,
Thank you very much for your reply, I really appreciate it!!! I am calling Screen.Close() in my app and have the same problem in Silvermoon demo, so this shouldn't be the issue...
My HD2 has the following files in Windows directory:
libEGL.dll
libEGL_org.dll
libGLES_CL.dll
libGLES_CM.dll
libGLESv1_CM.dll
libGLESv2.dll
I recompiled OpenGl.dll in VS2008 with the folowing combinations & results:
libGLES_CM.dll in gl.cs & libEGL.dll in egl.cs -> app not starting at all.
libGLES_CM.dll in gl.cs & egl.cs -> app crashes at 7th start
libGLESv1_CM.dll in gl.cs & egl.cs -> app not starting at all.
libGLESv1_CM.dll in gl.cs & libEGL.dll in egl.cs -> app crashes at 7th start
Any further ideas?

I think the last version (v1 and egl) should be used on gles2 devices instead of the software renderer.
Now it's getting difficult.
Maybe try to disable Manila (Sense) restart device and test your app.
If it still fails:
Try to start another opengles app several times. (try my opengl test app (snapdragon version))
edit:
something else to try (yes, I'm getting out of ideas...)
Before Screen.Close() you could call gl.DeleteTextures() with for example an array of 100 uints starting at 1.

Disabling "HTC Sense" allows for one extra launch of the app, meaning it crashes at the 8th start attempt. Exactly the same problems using your TestOpenGL.
The only difference is, that when trying to launch my app for the 7th/8th time, the busy cursor appears shortly on the screen, as if it were starting up, but then just disappears and nothing more happens. When I launch TestOpenGL, the busy cursor appears and freezes, then nothing more happens.

ok, so it looks like resources are not cleaned up.
Try the glDeleteTextures suggestion. (even though this is called)
btw: Are you using a stock rom? Have you installed any 3d drivers (like chainfire's patch found in the sticky thread in the forum)?

Nope, unfortunately gl.DeleteTextures(1, 100) just before Screen.Close() is not helping either...
I'm using Xannys Pandora ROM which has GLTweaks integrated. However, taking into consideration the posts from codeplex, where several people are having the exact same problem on different phones (tg01, hd2), can it really be a ROM problem?
BTW: Thank you so much for taking the time to try and help!!!!

I struggle with the same issue in my own app (here) using silvermoon (7th start fails using HW renderers).
heliosdev Test app runs fine and can start numerous times without problems (gave up after 20 starts), also tried "coin toss" (here) without problems running multiple times.
Running on Miri's 6.5.x v8 without any enhancements installed.

Ok, I've created a small test app, which simply loads a form containing a Silvermoon window control, with a ChromeButton on it. On clicking the button, I call Screen.Close() to exit the app.
Testing on the Emulator works fine, but on my HD2 the 7th attempt to launch the app results in the following error: "Error on glGenTexture.". I have traced this Error to Line 37 in "Texture.cs" of the OpenGL source:
Code:
public Texture()
: base()
{
this.Name = gl.GenTexture();
[b]if (this.Name == 0) throw new OpenGlException("Error on glGenTexture.");[/b]
}
I added a line in Texture.cs to output the gl.GenTexture() uint value. On the first 6 start attempts it returns the values 1 and 2, but on the 7th it returns 0, which obviously is what causes the error.
Digging further, the GenTexture() method (which is returning 0) comes from pInvoking glGenTextures() in libgles_cm.dll.
Sadly, this is where my programming skills end... I really hope we can find a solution to this issue! It would hurt, having to give up on Silvermoon.

Looks like 'out of memory'. Call the following method before and after the GenTexture call (1285 is out of memory error).
Code:
private void CheckErrorGL(string info)
{
uint err = gl.GetError();
if (err != gl.GL_NO_ERROR)
{
MessageBox.Show(err.ToString(), "GL " + info);
}
}

Doesn't seem to be OutOfMemory... gl.GetError() is returning 0.

The exception is thrown without any glerror message box?
Run cleanRAM before calling it for the 7th time.

Correct, it's not throwing a glerror! Although, VS2008 is not showing me GL_NO_ERROR option on gl. But an if I remove the if-clause from your code (if (err != gl.GL_NO_ERROR)), the messagebox always returns 0.
Just ran a level 3 purge with cleanRAM... problem remains

The error definitions are in the namespace Silvermoon.OpenGL.Native (gl/egl)
And what does egl.GetError() return? (EGL_SUCCESS is 12288)
Code:
private void CheckErrorEGL(string info)
{
int err = egl.GetError();
if (err != egl.EGL_SUCCESS)
{
MessageBox.Show(err.ToString(), "EGL " + info);
}
}

the error definitions are surrrounded by a
#region obsolete
#if false
...
#endif
Change the false to true to access them.

get a EGL 12294 before calling gl.GenTexture()
seems to be a EGL_BAD_CONTEXT

Before calling gl.GenTexture() I'm also getting error code 12294 (EGL_BAD_CONTEXT) and afterwards 12288 (EGL_SUCCESS).
(Had a typo in my code, therefore I got the wrong result previously...)

I have the same problem with my tiny graphics engine. I think its the same problem because the egl.cs and its setup are nearly identical. So here's what I've found out:
- Its only about Egl, not about OpenGl, so forget deleteTextures etc (I've written a little test, that simply creates a display, context and surface and destorys them, no Gl calls and the same bug)
- create context creates a "Gl_Bad_Alloc" error
- everything that is allocated by egl is also destroyed
I think its also not a bug in the driver, because there is for example that ogles 2 game electopia or something like that, and this game is not affected!

I found a solution!!! I don't know about Silvermoon, but it works with my tigre engine. I can't explain it, I have no idea, and itse not the best solution, but it seems to work. Just DO NOT destroy the display, DO NOT delete context and DO NOT delete the surface. Any one have a idea why it is like that?

Phippu said:
I found a solution!!! I don't know about Silvermoon, but it works with my tigre engine. I can't explain it, I have no idea, and itse not the best solution, but it seems to work. Just DO NOT destroy the display, DO NOT delete context and DO NOT delete the surface. Any one have a idea why it is like that?
Click to expand...
Click to collapse
Amazing! That did the trick with silvermoon too. Great find, thanks!
No idea why that works though.
Sometimes it seems to be better leaving a mess instead of cleaning everything up properly

Background task completion in Windows Phone 7 (with video)

Guys, I wrote a multi-threaded app that is just a simple counter. When it reaches 30,000 the job is done. The counting thread which doesn't have to deal with the form, continues counting if I go back to start menu with the windows button. The app is surely there in the background cause I can see it in the task manager. There seem to be some complications though. Sometimes it's completely shut down after a while; this may be a problem with the emulator and of course I don't have a device to try it on.
Sorry if something like this was said before
a video I uploaded: http://www.youtube.com/watch?v=glzBui95tiY

Do a pastebin of the source code, if you want any serious input on this. Because I doubt it's running in the background (as it's not possible)

It looks like you're using an old emulator build. They've changed things more recently. Apps will no longer keep running.

It's not running in the foreground for sure
they're just two simple threads:
Code:
ThreadPool.QueueUserWorkItem(o =>
{
counter = 0;
complete = false;
while (true)
{
Dispatcher.BeginInvoke(() =>
{
textBlock1.Text = counter.ToString();
if (complete)
{
textBlock2.Text = "Counting Completed!";
}
});
Thread.Sleep(0);
}
});
ThreadPool.QueueUserWorkItem(o =>
{
while (true)
{
Dispatcher.BeginInvoke(() =>
{
if(!complete) counter++;
if (counter == 30000)
complete = true;
});
Thread.Sleep(0);
}
});

RustyGrom said:
It looks like you're using an old emulator build. They've changed things more recently. Apps will no longer keep running.
Click to expand...
Click to collapse
yeah, I think it's the April version. So this doesn't work anymore?
edit: yep! tested on the newest version and it looks like they've now completely killed multitasking, lol

I think that technically internal thread pools should be allowed, but just be killed when the application is closed.

So interesting - how will I be able to make a screenshot of any app?
Like maps or whatever else?
I use this function very open.

Most likely with a button combination, no information about it yet.
The API supports it though WriteableBitmap, which is available in the current WP7 API. So it's definitively possible.

Windcape said:
Most likely with a button combination, no information about it yet.
The API supports it though WriteableBitmap, which is available in the current WP7 API. So it's definitively possible.
Click to expand...
Click to collapse
So it will be build into the system without any 3rd party app needed?

doministry said:
So it will be build into the system without any 3rd party app needed?
Click to expand...
Click to collapse
Who knows, really hard to tell. I'm don't think this week's build have a dedicated screenshots functionality.
But it's definitively possible. As opposed to other functionality.

[Q] [Resolved] [.Net CF 3.5] How do i create a treeview based file browser

I have a problem with a project i'm working on and that is:
How do i create a TreeView based file browser that can export a selected path and filename to a textbox and a Process.Start call at the same time. That's it in a nut shell. The main part if the tree view bit but i haven't figured out how to do variables yet and i'm gonna need one for the second part. I have spent hours googling and i have this question posted on a dedicated VB forum.
I'm using Visual Basic 2008 as the IDE and .Net CF 3.5 as the language (obviously)
If anyone has any ideas on this i'll gladly hear them coz i am really stuck. I found writting code to soft reset a device was easier

TreeNodeCollection tr=treeView1.Nodes;
TreeNode tn;
foreach (string dirs in System.IO.Directory.GetDirectories(System.IO.Directory.GetDirectoryRoot(Assembly.GetExecutingAssembly().GetModules()[0].FullyQualifiedName)))
{
tn = new TreeNode(dirs);
//tr = new TreeNodeCollection();
tr.Add(tn);
}

ergintiravoglu said:
TreeNodeCollection tr=treeView1.Nodes;
TreeNode tn;
foreach (string dirs in System.IO.Directory.GetDirectories(System.IO.Directory.GetDirectoryRoot(Assembly.GetExecutingAssembly().GetModules()[0].FullyQualifiedName)))
{
tn = new TreeNode(dirs);
//tr = new TreeNodeCollection();
tr.Add(tn);
}
Click to expand...
Click to collapse
Is that C# code or VB?

M3PH said:
Is that C# code or VB?
Click to expand...
Click to collapse
C#....VB don't have the curly brackets

So i've come back to this question after a few months avoiding VB. I'm now working on a new product and the lack of an folderbrowserdialog object in .Net CF is killing me.
What i need is this (oh and thanks to everyone that posted above but i can't make that solution work). A way to list all the folders on a device and then select one that can be passed to a variable so it's path can be used elsewhere. Maybe also pass the path to a textbox just so it's clear what you have selected. I've spent 2 days googling this and i did find a few things. Most don't work and the rest are in c# which is not much good. So if anyone wants to help me out i would really appreciate it.

Get your head round this.........
O.K. Here's how it's done, with a crash course in one of the most powerful of programming techniques - Recursion. It can confuse the hell out of rookie programmers, as they just can't get their heads round what's going on. It is dependant on a function's local variables and fortunately, .NET's stack based architecture allows us to use it to the full.
You will need, 1.) a TreeView object - named "treeView1" and 2.), a label named "label1" placed underneath it. The label is only there to prove the point that we can get at the full pathname of the selected directory in the Treeview. In reality it can be dropped, just put your processing code directly in the TreeView's AfterSelect() event.
The Form_Load() event gets the directories in the root directory, by calling GetDirList with an initial directory of "\".
GetDirList() adds the directories to the TreeView then calls GetDirList again on each directory to get any subdirectories, and again on each subdirectory, ad nauseum. Keep going until there are no more directories returned.
When completed TreeView contains a list of every directory/subdirectory on the device.
When you select an item from the TreeView the full pathname is displayed in the label. The image at the bottom shows it running under debug on the WinMo 5.0 emulator. There are several directories you would not normally see on your device.
Good Luck, stephj.
Code:
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
Me.GetDirList("\")
End Sub
Private Sub GetDirList(ByVal PathName As String)
Dim dirs As String
For Each dirs In Directory.GetDirectories(PathName)
Dim tn As New TreeNode(dirs)
Me.treeView1.Nodes.Add(tn)
Me.GetDirList(tn.FullPath)
Next
End Sub
Private Sub treeView1_AfterSelect(ByVal sender As Object, ByVal e As TreeViewEventArgs)
Me.label1.Text = e.Node.FullPath
End Sub
P.S.
You will need the VB equivalent of using System.IO adding to your project.
This stuff has been around since .NET CF 1.1
The original project was written in C#, I used .NET Reflector to translate it into VB from the original. The original C# is included here:-
Code:
using System;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace Test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
GetDirList("\\");
}
private void GetDirList(string PathName)
{
foreach (string dirs in System.IO.Directory.GetDirectories(PathName))
{
TreeNode tn = new TreeNode(dirs);
treeView1.Nodes.Add(tn);
GetDirList(tn.FullPath);
}
}
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
label1.Text = e.Node.FullPath;
}
}
}

cool thanks. I'll have a look at coding this tomorrow (i having some fun time right now).
I did have a look at doing this with a list box yesterday but i was getting errors left, right and centre so i really do appreciate the help.
Just an FYI the VB equivelent of "using" is "imports" otherwise most of the objects are the same but i don't nee to worry about adding it as the program is already interacting with the file system.
Again thanks very much. I really appreciate you taking the time to help me out.

I've just had a look at implementing this but i'm having trouble getting the treeview to populate with the folder list. What am i doing wrong? the object names all match up and i can't see why it's not working. Am i just being plain dense?
What i have Is pretty much what you posted except for a few changes to allow for the fact that the treeview object is in a tabcontrol and i already have a bunch of labels knocking around so the label is called label28 and not label1.
I'm sorry if it appears like i'm not trying or i'm asking you to do all the work but i am genuinely really stuck. I get the recursion principal, That's not an issue but i'm trying to create something from scratch that should really have been included in .net CF and i'm just not that good a programmer yet

Should work..... but without seeing the actual code it's rather hard to remotely debug it.
To prove the point, here's the complete VS2008 VB .NET CF 3.5 project.
In the \bin\release directory is the actual executable. If you have .NET CF 3.5 on your device, drop DirList.exe onto it and run it.

I had a look at the project you posted and just copied the coded over. I did make some tweaks so it only loaded the folder list when the tab the treeview was on was clicked but that didn't work so i repated the code in as is and voila! it works. Now all i need is to create a variable to store the selected path in but i think i can manage that.
Again a huge thanks.

Hierarchical view......
Here's the project to indent, compress, and expand the directory tree structure.

I was just playing around with this and i noticed that when you click on a directory below "\" the path becomes "\\this\path". This is obviously not a valid windows mobile path and it is causing an IOexception and I have no idea how to fix it. Google suggests lots of c# pages that say to use a regular expression to strip out the illegal characters but the example i found was for the entire path and it seemed to check each character against a variable of illegal values. I'm sure if that would work for me. Heres the link.
Let me know what you think.

I have no idea where the \\this is coming from, I can't replicate it.
To filter out the extra leading slash use this:-
Code:
Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
If TreeView1.SelectedNode.FullPath.Length() = 1 Then
Label1.Text = TreeView1.SelectedNode.FullPath
Else
Label1.Text = TreeView1.SelectedNode.FullPath.Substring(1)
End If

Interesting new problem has cropped up with this code. It doesn't seem to work on rhodiums. It works fine in the emulator, my HD2 and all of CajunFlavouredBob's devices but i have a user that has a rhodium that get the error posted here. I can't replicte it and i don't have a rhodium to test it with. Any ideas?

Hmmmmm another tricky one. Without seeing the device actually throw the error, it can be a bit difficult.
Does this machine actually report the storage card as "\Storage Card"? Some machines don't. In which case you may have to use some storage card enumeration trick to get hold of the real name it uses. This may not apply in this case.
Also, to make things trickier still, the stack dump shows 'GetInternalDirectoryNames()' as the function throwing the error first. This is a level below your call of GetDirectories(), and is being used by the OS to actually go get the info. You may have to create a test version of EXCT2 full of Try...Catch programming blocks, to try to get to the real point where the error is being thrown.

well this turned out to be a memory related issue. So instead of using the folder browser we now use the stock winmo savedialog. because it uses less memory and allows us access to the locations we need.
Thanks for helping though steph.

Successful TCP Connection via CoreCon

So during my break today I added a few more registry paths to check on my HTC Radar and I found HKCU\Software\Microsoft\ConMan\HostLauncher\HostData\. There I found a few Service entries:
Code:
7ABBE0D5-B437-42CA-B57B-CEED61680E4F
11EE50CA-6CD3-45BA-9D65-46E133CFF009
B2FC26AB-D6EC-4426-91FA-9E039F92A639
The first entry did not take me any where but the other two did.
Running those in my test application sent back:
Code:
Int32Type: 0
Int32Type: -2147024809
I know it isnt much and I am not sure what to send to the ConMan so if someone does please tell me:
Code:
private static void ExecutionTest()
{
#region Create Objects
ObjectId DeviceID = new ObjectId("30F105C9-681E-420b-A277-7C086EAD8A4E");
Platform platform = datastoremanager.GetPlatform(PlatformObjectID);
Device device = platform.GetDevice(DeviceID);
#endregion
try
{
//Connect to the device.
device.Connect();
if (device.IsConnected())
{
RemoteAgent ra = device.GetRemoteAgent(new ObjectId("910DCB1B-487B-452b-87FC-73852B5A239C"));
DevicePacketStream ps = ra.CreatePacketStream(new ObjectId(new Guid("11EE50CA-6CD3-45BA-9D65-46E133CFF009")));
// Create and write a packet of data.
Packet packet;
packet = new Packet();
for (int i = 0; i < 4; i++) packet.WriteInt32(i);
packet.WriteString("Hello Smart Device");
ps.Write(packet);
#region While stream is connected, try to read a packet.
while (ps.IsConnected())
{
if (ps.IsPacketAvailable())
{
packet = ps.Read();
while (!packet.IsEndOfPacket())
{
switch (packet.ReadDataType())
{
case DataType.BoolType: bool boolValue = packet.ReadBool(); break;
case DataType.ByteArrayType: byte[] buffer = packet.ReadBytes(); break;
case DataType.ByteType: byte byteValue = packet.ReadByte(); break;
case DataType.CharType: char charValue = packet.ReadChar(); break;
case DataType.Int32Type: Console.WriteLine("Int32Type: " + packet.ReadInt32().ToString()); break;
case DataType.StringType: Console.WriteLine("String: " + packet.ReadString()); break;
default: break;
}
}
break;
}
System.Threading.Thread.Sleep(1000);
}
#endregion
}
}
catch (Exception ex)
{
throw ex;
}
finally { device.Disconnect(); }
}

Huh, you got the remote "GetRemoteAgent" working. Right?
I think i might know how to resolve what to call in to the packet. VS2010 talks to wp7, and uses one of those GUID's; meaning one should be able do binary search all files (in a rom) to see who owns the GUID (what dll handler), disassemble that dll (to ASM/c), and extract "what it wants".
Or if MS has a hidden caller class somewhere
Ill look further into this, thanks

fiinix said:
Huh, you got the remote "GetRemoteAgent" working. Right?
I think i might know how to resolve what to call in to the packet. VS2010 talks to wp7, and uses one of those GUID's; meaning one should be able do binary search all files (in a rom) to see who owns the GUID (what dll handler), disassemble that dll (to ASM/c), and extract "what it wants".
Or if MS has a hidden caller class somewhere
Ill look further into this, thanks
Click to expand...
Click to collapse
Yes I did . Yeah I just need to know what to actually send to to the device. I know Visual Studio communicates this way.

MJCS said:
Yes I did . Yeah I just need to know what to actually send to to the device. I know Visual Studio communicates this way.
Click to expand...
Click to collapse
Great
I, myself tried 20+ GUID's once (from wp7 that _could_ be); all threw exceptions (aka not a remote agent handler).
It feels better now knowing what GUID's i can use.
Well the reg path was quite obvious; why did i not stumble upon that one earlier..

fiinix said:
Great
I, myself tried 20+ GUID's once (from wp7 that _could_ be); all threw exceptions (aka not a remote agent handler).
It feels better now knowing what GUID's i can use.
Well the reg path was quite obvious; why did i not stumble upon that one earlier..
Click to expand...
Click to collapse
Well I only found it since I know have an HTC Radar. My Dell venue pro requires you to manually enter in registry paths to see if they exist or not. I was able to decompile an older HTC registry viewer and then fix it so it didnt require interop unlock.

It should be possible to do registry browsing (but not editing) just fine on a DVP using the standard tools, unless there's a check that specifically blocks them. The browsing uses a native homebrew DLL that doesn't require ID_CAP_INTEROPSERVICES and has no device-specific dependencies. It's the editing that requires interop-unlock and device-specific DLLs.

GoodDayToDie said:
It should be possible to do registry browsing (but not editing) just fine on a DVP using the standard tools, unless there's a check that specifically blocks them. The browsing uses a native homebrew DLL that doesn't require ID_CAP_INTEROPSERVICES and has no device-specific dependencies. It's the editing that requires interop-unlock and device-specific DLLs.
Click to expand...
Click to collapse
There is no GetSubKeys method...anyways lets get back on topic.

I've been trying for weeks to get anything out of this. Nothing so far. I did find out that the Developer unlock is just a byte array of a cookie taken from Microsoft's auth server.

Has anyone had any success with this socket method yet? I really don't know enough about sockets to try.

BTW you have to have a core con connection to the device already open either from app debugging or some other method

[HELP] Can we use native libs in a module? Mine dies as soon as a lib is added.

Hi,
First, a disclaimer.
I am a Java and xposed noob. My background is in embedded C development so I can get by with some simple Java code and thanks to the great tutorials online I have been able to put together an xposed module but I'm struggling with a problem that is beyond my abilities now and am reaching out to the community for help.
Next, the background.
I have an Android head unit in my car. There is an app that provides me with CarPlay functionality but none of the controls on the steering wheel work with the app. When I analysed the code I found that they handle all of their button inputs using proprietary methods that do not inject an event into any input streams. I wrote an xposed module to hook the button press methods and then inject a proper input into one of the event streams.
Initially I tried to use the command line 'input' command to do this but since it is a Java app and takes about 1s to load it was too slow. My only other option was to create a virtual device on an input stream that I could then use to inject keypresses through the hooked method. To create a virtual device I needed to write C code that my xposed module would be able to access through the JNI. Long story short, after some pain I was able to get the native library integrated into the project and compiling using the NDK.
Finally, the problem.
When I was using the module without the native library it worked but just with a large delay because of the time it takes to load the 'input' java app. I was able to see logs from the module in the logcat as I hooked the method and as I went through the various actions within the hook.
As soon as I introduce the native library though the entire xposed module just stops running completely. I do not get any logs from the module even though I have installed, activated and rebooted. It shows up in the xposed installer but it just does nothing. The funny thing is that this happens even if I make no reference whatsoever to any native functions within the library. All I need to do to kill the module is to build it with the System.loadlibrary line in the Main.java uncommented. As soon as I comment that piece of code out the module starts to hook the function and output logs again. Below is the code from the Main.Java that I am referring to. I am happy to make any manifest, C and gradle files available too. Looking for any ideas as to why the module dies completely as soon as I include this...
Code:
package projects.labs.spike.zlink_xposed_swc;
import de.robv.android.xposed.XposedBridge;
import static de.robv.android.xposed.XposedHelpers.findAndHookMethod;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.XSharedPreferences;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.callbacks.XC_LoadPackage;
import de.robv.android.xposed.XposedHelpers;
import android.app.AndroidAppHelper;
import android.content.Intent;
import android.os.Bundle;
import android.content.Context;
/* shellExec and rootExec methods */
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import android.view.KeyEvent;
import android.media.AudioManager;
public class Main implements IXposedHookLoadPackage {
public static final String TAG = "ZLINK_XPOSED ";
public static void log(String message) {
XposedBridge.log("[" + TAG + "] " + message);
}
//public native int CreateVirtualDevice();
//public native int SendPrev();
@Override
public void handleLoadPackage(final XC_LoadPackage.LoadPackageParam lpparam) throws Throwable {
log("handleLoadPackage: Loaded app: " + lpparam.packageName);
if (lpparam.packageName.equals("com.syu.ms")) {
findAndHookMethod("module.main.HandlerMain", lpparam.classLoader, "mcuKeyRollLeft", new XC_MethodHook() {
@Override
protected void afterHookedMethod(XC_MethodHook.MethodHookParam param) throws Throwable {
// previous
log("PREVKEYHIT");
//rootExec("input keyevent 88");
log("EVENTSENT");
//Below was trying to use media keys which zlink never responded to...
/* Context context = (Context) AndroidAppHelper.currentApplication();
AudioManager mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
KeyEvent event = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_MEDIA_PREVIOUS);
mAudioManager.dispatchMediaKeyEvent(event);
KeyEvent event2 = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_MEDIA_PREVIOUS);
mAudioManager.dispatchMediaKeyEvent(event2);*/
//Below is the failed broadcast intent method...
/*Context mcontext = (Context) AndroidAppHelper.currentApplication();
Intent i = new Intent("com.android.music.musicservicecommand");
i.putExtra("command", "pause");
mcontext.sendBroadcast(i);*/
}
});
}
}
public static String rootExec(String... strings) {
String res = "";
DataOutputStream outputStream = null;
InputStream response = null;
try {
Process su = Runtime.getRuntime().exec("su");
outputStream = new DataOutputStream(su.getOutputStream());
response = su.getInputStream();
for (String s : strings) {
s = s.trim();
outputStream.writeBytes(s + "\n");
outputStream.flush();
}
outputStream.writeBytes("exit\n");
outputStream.flush();
try {
su.waitFor();
} catch (InterruptedException e) {
e.printStackTrace();
}
res = readFully(response);
} catch (IOException e) {
e.printStackTrace();
} finally {
Closer.closeSilently(outputStream, response);
}
return res;
}
public static String readFully(InputStream is) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length = 0;
while ((length = is.read(buffer)) != -1) {
baos.write(buffer, 0, length);
}
return baos.toString("UTF-8");
}
static {
System.loadLibrary("native-lib");
}
}

Have you tried capturing an ADB log _during the bootup_?
Xposed bugs in general are unfortunaley hard to identify and harder to fix, since the underlying code isn't well understood and/or maintained by many people.

Namnodorel said:
Have you tried capturing an ADB log _during the bootup_?
Xposed bugs in general are unfortunaley hard to identify and harder to fix, since the underlying code isn't well understood and/or maintained by many people.
Click to expand...
Click to collapse
Thanks for the response. I think that I have it figured out. The System.loadlibrary method looks for the native library within a path relative to the process that it is running within. The code within the apk ultimately does not run within that apk process, it runs within the xposed process. You therefore need to give xposed an absolute path to the library using the system.load method instead. Going to do some fiddling tonight and see if it works.

looxonline said:
Thanks for the response. I think that I have it figured out. The System.loadlibrary method looks for the native library within a path relative to the process that it is running within. The code within the apk ultimately does not run within that apk process, it runs within the xposed process. You therefore need to give xposed an absolute path to the library using the system.load method instead. Going to do some fiddling tonight and see if it works.
Click to expand...
Click to collapse
What about an alternative without using library we discussed earlier? Are you planning to test this as well?
If so, please let me know how it went.

C3C076 said:
What about an alternative without using library we discussed earlier? Are you planning to test this as well?
If so, please let me know how it went.
Click to expand...
Click to collapse
I didn't try it yet for two reasons.
1.) From the research I have done it seems as if my app would need the system INJECT_EVENTS permission in order to send keypress events outside of its own process. I cannot get this permission unless I sign my apk with the system cert that the ROM is compiled with. Maybe the method that you are using in the suggestion does not need this cert? Have you personally used this to inject key events across processes? I did see that you are getting the context of the system input service so maybe that solves this issue if the request appears to come from that PID...???
2.) The unit that I am working with has only two input devices and none of them have the keycodes I require. Does your method use a completely virtual device that is created on the fly? If so then it could work well without the need for me to create an HID input device.
I mostly was just on a role with the method that I was trying and I didn't want to turn back since I was so far down the road. I'm sure you understand how addictive certain challenges become and its quite fun to try to get them working even if they may not be the most optimal way.
In any case I managed to get the native library working last night and can successfully convince Android that I have a real HID keyboard plugged in and then send key events through that keyboard. Still not done though as there are a few hiccups that need solving. May still try your original suggestion. Thanks

looxonline said:
I didn't try it yet for two reasons.
1.) From the research I have done it seems as if my app would need the system INJECT_EVENTS permission in order to send keypress events outside of its own process. I cannot get this permission unless I sign my apk with the system cert that the ROM is compiled with. Maybe the method that you are using in the suggestion does not need this cert? Have you personally used this to inject key events across processes? I did see that you are getting the context of the system input service so maybe that solves this issue if the request appears to come from that PID...???
2.) The unit that I am working with has only two input devices and none of them have the keycodes I require. Does your method use a completely virtual device that is created on the fly? If so then it could work well without the need for me to create an HID input device.
I mostly was just on a role with the method that I was trying and I didn't want to turn back since I was so far down the road. I'm sure you understand how addictive certain challenges become and its quite fun to try to get them working even if they may not be the most optimal way.
In any case I managed to get the native library working last night and can successfully convince Android that I have a real HID keyboard plugged in and then send key events through that keyboard. Still not done though as there are a few hiccups that need solving. May still try your original suggestion. Thanks
Click to expand...
Click to collapse
I see.
1) Depends on in what process (package) your hooks are running within because permissions of this process apply of course, not the permissions you define in your module's manifest.
I am using key injecting method within "android" process (package) which means it works without me needing to worry about INJECT_EVENTS permission as "android" process already has it.
By the way, missing permissions are not of a big issue when developing with xposed as you can really do some magic with it.
E.g. I was adding some functionality to SystemUI that required some additional permissions that SystemUI typically lacks. So my module takes care of it.
https://github.com/GravityBox/Gravi...eco/pie/gravitybox/PermissionGranter.java#L75

C3C076 said:
I see.
1) Depends on in what process (package) your hooks are running within because permissions of this process apply of course, not the permissions you define in your module's manifest.
I am using key injecting method within "android" process (package) which means it works without me needing to worry about INJECT_EVENTS permission as "android" process already has it.
By the way, missing permissions are not of a big issue when developing with xposed as you can really do some magic with it.
E.g. I was adding some functionality to SystemUI that required some additional permissions that SystemUI typically lacks. So my module takes care of it.
https://github.com/GravityBox/Gravi...eco/pie/gravitybox/PermissionGranter.java#L75
Click to expand...
Click to collapse
Wow! I had no idea that you can use an xposed helper function to grant permissions to whatever process you are hooked within like that. That is VERY cool. Thanks so much for sharing