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Posted: Tue Apr 08, 2003 5:49 am Post subject: DirectShow Linking Error

I'm working on a DirectShow render filter and i'm getting a linking error:

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unresolved external symbol "public: virtual unsigned long __stdcall CBaseFilter::NonDelegatingRelease(void)" (?NonDelegatingRelease@CBaseFilter@@UAGKXZ)

using visual studio .net. i have strmbase.lib included properly in the project, and have sreams.h included in my render filter header file. The sample app from the DirectX 8 SDK compiles fine with no linking errors of this kind, and i've been careful to make sure my project has the same include directories and the libraries that i need.

BTW - if the DirectShow examples are any sign of how MS writes code, it's a wonder they have anything that works. It seems real convolotuded and hard to follow, especially for example apps.

Posted: Tue Apr 08, 2003 6:29 am Post subject:

I did a search and found this: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcedshow/htm/_cxconsettingupbuildenvironment.asp

But before that I found:

Quote:

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

"See Setting Up the Build Environment for more information" is the first link above. Good luck to ya.

Posted: Tue Apr 08, 2003 6:52 am Post subject:

sweet, i'll try that out when i get a chance, thanks!

Butt Sniffer Joined: 06 May 2002 Posts: 1579

i'm looking at a directshow class i wrote awhile back and i didn't even have sreams.h included, i used dshow.h. for the lib i used strmiids.lib like:

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#pragma comment (lib, "strmiids")

but you know what, this could be dx7. it's been so long i can't even remember. i know dx9 was in beta at the time and dx8 was out, but i'm not sure if i used it.

Butt Sniffer Joined: 06 May 2002 Posts: 1579

Lycander wrote:
I did a search and found this: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcedshow/htm/_cxconsettingupbuildenvironment.asp

But before that I found:

Quote:

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

"See Setting Up the Build Environment for more information" is the first link above. Good luck to ya.

hey lycander, good info, but it's in the wrong MSDN section. that's for Windows CE .Net. i'm not sure it would apply.

i think this is the section you want, DirectX 8.1 SDK section in the MSDN:
http://msdn.microsoft.com/library/default.asp?url=/nhp/Default.asp?contentid=28000410

here is an 8.1 section on filters:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dx8_c/directx_cpp/htm/directshowsamples.asp

ok, i used the dx8.1b SDK, but because the older stuff is supported, those very well may be dx7 libs and headers.

if you want hohlecow, i'd be happy to post the code i wrote. it works fine for playing an intro .avi movie with divx compression for this game demo i did like a year ago.

Posted: Tue Apr 08, 2003 11:06 am Post subject:

DOH! Didn't occur to me to check the platform. Nice catch brohobbes.

I'm a WinCE programmer, so I'm use to seeing it I take it as default.

Programming for PocketPC is a lot like programming for desktop Windows.

Butt Sniffer Joined: 06 May 2002 Posts: 1579

Lycander wrote:
DOH! Didn't occur to me to check the platform. Nice catch brohobbes.

I'm a WinCE programmer, so I'm use to seeing it I take it as default.

Programming for PocketPC is a lot like programming for desktop Windows.

would it work on a desktop, too? if so it wouldn't matter then, i don't know anything about that.

Posted: Tue Apr 08, 2003 11:59 am Post subject:

We'll wait and see what he can come up with.

Posted: Tue Apr 08, 2003 1:54 pm Post subject:

Here's the latest news on my linking problem, i did the pragma comment
to include the library.

now i'm having a problem with an unhandled exception... more on that when i know more.

Posted: Tue Apr 08, 2003 2:04 pm Post subject:

brotherhobbes wrote:

if you want hohlecow, i'd be happy to post the code i wrote. it works fine for playing an intro .avi movie with divx compression for this game demo i did like a year ago.

what did you use to compile it? code would be helpful, workspace too if you have it.

i don't have any problems getting a DirectShow filter graph playing, its the render filter that's the big problem, and also the most important part. have you written any filters for DirectShow?

Butt Sniffer Joined: 06 May 2002 Posts: 1579

hohlecow wrote:
brotherhobbes wrote:

if you want hohlecow, i'd be happy to post the code i wrote. it works fine for playing an intro .avi movie with divx compression for this game demo i did like a year ago.

what did you use to compile it? code would be helpful, workspace too if you have it.

i don't have any problems getting a DirectShow filter graph playing, its the render filter that's the big problem, and also the most important part. have you written any filters for DirectShow?

i used vs c++ 6

i'm sorry, i don't mean to be slow, but i'm not sure what the terms mean. i wrote something that let me play a movie at the demo intro. looking over the code i used the "IGraphBuilder," so i guess it's just a filter graph? you still want it?

you are welcome to all of it, if it's still what you are looking for, but the workspace isn't just for the dshow stuff. it's the entire demo.

Posted: Tue Apr 08, 2003 3:06 pm Post subject:

hohlecow wrote:
Here's the latest news on my linking problem, i did the pragma comment
to include the library.

now i'm having a problem with an unhandled exception... more on that when i know more.

Unhandled exception at runtime or during compile?

If at runtime, I'm betting it's an access violation (null pointer). Double check to make sure you initialize objects before using them, and that they actually suceed in initializing.

Posted: Tue Apr 08, 2003 5:27 pm Post subject:

it's at run time. i'd agree with a null pointer, but i can't seem to find it. I'm initializing everything that i use. here's where things are currently crashing:

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g_pGrab = new CSampleGrabber(NULL, &hr, FALSE);


g_pGrab->AddRef();





g_pGraphBuilder->AddFilter(g_pGrab, L"Texture Renderer");





/* CRASHSSHSHSHHS!!! */

i'd think that if g_pGrab wasn't properly initialized it would crash at AddRef(), but it makes it past that. CSampleGrabber is one of the sample classes included with the SDK. since my classes kept crashing at run time, i figured i'd give one of theirs a try, but it does exactly the same thing.

for Brother Hobbes, DirectShow uses filters all connected together in what's called a filter graph. you have an input filter, a decoder filter, possibly a transform filter and an output filter. You can have any number of outputs from a filter, but i think only one input. You can put together a filter graph pretty easily if you just want to play a video, but if you want to actually get at the data, things get a little tricky. and that's why i have come to you guys.

i'd still love to see you're code. i'm learning more and more about directshow and com the more i look at things.

Butt Sniffer Joined: 06 May 2002 Posts: 1579

the h

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//////////////////////////////////////////////////////////////////////


// File: "PimpFlicks.h"


//


// Related Header Files: "dshow.h"


//


// Original Author: Joshua Brown -> brotherhobbes@hotmail.com


//


// Creation Date: May 14, 2002


//


// Purposes: member variable declaration and function prototyping for


// a DirectShow class allowing movie playing


//////////////////////////////////////////////////////////////////////





#ifndef _PIMPFLICKS_H_


#define _PIMPFLICKS_H_





#ifndef _WIN32_DCOM


#define _WIN32_DCOM


#endif





#include "dshow.h"


#include "Variables.h"


#include <string>


using std::string;





#include <objbase.h>





// WindowProc Message for DShow Events.


#define WM_GRAPHNOTIFY   WM_APP + 1





class PimpFlicks


{


   private:


      IGraphBuilder *m_pGraphBuilder;   // Makes the Filter Graph.


      IMediaControl *m_pMediaControl;   // VCR style control of the Movie.


      IMediaEventEx *m_pMediaEvent;   // Handles the Movie Events.


      IVideoWindow *m_pVideoWindow;   // The Window the Movie will play in.


      IBasicAudio *m_pBasicAudio;      // Set the Panning and Volume.


      


      // holds handle to the window video is played in


      HWND m_hWnd;





      // how many movie files there are


      int m_iNumFiles;





      // filenames of movies


      enum { MAX_MOVIES = 10, };


      string m_strFileNames[MAX_MOVIES];





   public:


      PimpFlicks(void);


      ~PimpFlicks(void);


      void ShutDown(void);


      void Init(HWND h, const char *strFileName = "flicks.cfg");


      void Load(const char *strFileName = "flicks.cfg");


        void Play(int fileNum, int top = 0, int left = 0, int right = Variables::ScreenWidth(),


            int bottom = Variables::ScreenHeight(), int volume = 100, int balance = 0);


      void Play(int fileNum, RECT rect, int volume = 100, int balance = 0);


      bool hasFinished(void);


};





#endif

Butt Sniffer Joined: 06 May 2002 Posts: 1579

the cpp

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//////////////////////////////////////////////////////////////////////


// File: "PimpFlicks.cpp"


//


// Related Header Files: "PimpFlicks.h"


//


// Original Author: Joshua Brown -> brotherhobbes@hotmail.com


//


// Creation Date: May 14, 2002


//


// Purposes: handles direct show video displaying


//////////////////////////////////////////////////////////////////////





#include "PimpFlicks.h"


#include "Error.h"





#include <fstream>


using namespace std;





// link dshow required lib


#pragma comment (lib, "strmiids")





// macro love


#define MULTI_TO_WIDE(x, y) MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, x, -1, y, _MAX_PATH)


#define WIDE_TO_MULTI(x, y) WideCharToMultiByte(CP_ACP, WC_COMPOSITECHECK, x, -1, y, 0, NULL, NULL)


#define SAFE_RELEASE(p) { if(p) { (p)->Release(); (p) = NULL; } }





//////////////////////////////////////////////////////////////////////


// Function: Constructor


//


// Last Modified: May 15, 2002


//


// Purposes: set all pointers to NULL and initalize variables used


//////////////////////////////////////////////////////////////////////


PimpFlicks::PimpFlicks(void)


{


   m_pGraphBuilder = NULL;


   m_pMediaControl = NULL;


   m_pMediaEvent   = NULL;


   m_pVideoWindow  = NULL;


   m_pBasicAudio   = NULL;


}





//////////////////////////////////////////////////////////////////////


// Function: Destructor


//


// Last Modified: May 16, 2002


//


// Purposes: chunks COM, NULL pointers, and releases


//////////////////////////////////////////////////////////////////////


PimpFlicks::~PimpFlicks(void)


{


   ShutDown();


      CoUninitialize();


}





//////////////////////////////////////////////////////////////////////


// Function: "ShutDown"


//


// Last Modified: May 16, 2002


//


// Purposes: set all pointers to NULL and releases


//////////////////////////////////////////////////////////////////////


void PimpFlicks::ShutDown(void)


{


   if (m_pMediaControl)


      m_pMediaControl->Stop();


   SAFE_RELEASE(m_pMediaControl);


   SAFE_RELEASE(m_pBasicAudio);


   if (m_pMediaEvent)


      m_pMediaEvent->SetNotifyWindow(NULL, 0, 0);


   SAFE_RELEASE(m_pMediaEvent);


   if (m_pVideoWindow)


   {


      //m_pVideoWindow->put_Visible(OAFALSE);


      //m_pVideoWindow->put_Owner(NULL);


   }


   SAFE_RELEASE(m_pVideoWindow);


   SAFE_RELEASE(m_pGraphBuilder);





    return;


}





//////////////////////////////////////////////////////////////////////


// File: "Init"


//


// Last Modified: May 16, 2002


//


// In:   h           handle to window video is going to be played in


//      strFileName   name of movie config file to open


//


// Return:   S_OK if successful


//


// Purposes: assign variables needed to play videos


//////////////////////////////////////////////////////////////////////


void PimpFlicks::Init(HWND h, const char *strFileName)


{


   // holds handle to result


   HRESULT result;





   // Initialize the COM Libraries.


   if (FAILED(result = CoInitializeEx(NULL, COINIT_MULTITHREADED)))


      throw Error("PimpFlicks::Init()", "CoInitialize()", result);





   // Create the Filter Graph Manager.


   if (FAILED(result = CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, IID_IGraphBuilder,   


                              (void **)&m_pGraphBuilder)))


      throw Error("PimpFlicks::Init()", "CoCreateInstance()", result);





   // Query for the Video Window Interface.


   if (FAILED(result = m_pGraphBuilder->QueryInterface(IID_IVideoWindow, (void **)&m_pVideoWindow)))


      throw Error("PimpFlicks::Init()", "m_pGraphBuilder->QueryInterface(m_pVideoWindow)", result);





      // Query for the Event Handler


   if (FAILED(result = m_pGraphBuilder->QueryInterface(IID_IMediaEventEx, (void **)&m_pMediaEvent)))


      throw Error("PimpFlicks::Init()", "m_pGraphBuilder->QueryInterface(m_pMediaEvent)", result);


   


   // Query for the Basic Audio Interface.


   if (FAILED(result = m_pGraphBuilder->QueryInterface(IID_IBasicAudio, (void **)&m_pBasicAudio)))


      throw Error("PimpFlicks::Init()", "m_pGraphBuilder->QueryInterface(m_pBasicAudio)",   result);


   


   // Query for the Media Control.


   if (FAILED(result = m_pGraphBuilder->QueryInterface(IID_IMediaControl, (void **)&m_pMediaControl)))


      throw Error("PimpFlicks::Init()", "m_pGraphBuilder->QueryInterface(m_pMediaControl)", result);





   // set window handle


   m_hWnd = h;





    // load the filenames


    Load(strFileName);





   return;


}





//////////////////////////////////////////////////////////////////////


// Function: "Load"


//


// Last Modified: May 16, 2002


//


// In:   strFileName      name of movie config file to open


//


// Purposes: opens movie config file and gets filenames


//////////////////////////////////////////////////////////////////////


void PimpFlicks::Load(const char *strFileName)


{


   ifstream fin;


   char chBuffer[256] = { 0, };


   fin.open(strFileName);


   if(fin.fail())


      throw Error("PimpFlicks::Load()", "Can't find file", strFileName);





   // number of movies


   fin >>    m_iNumFiles;





   // file names


   for(int i = 0; i < m_iNumFiles; i++)


   {


      fin >> chBuffer;


      m_strFileNames[i] = TEXT(chBuffer);


   }


   fin.close();





   return;


}





//////////////////////////////////////////////////////////////////////


// Function: "Play"


//


// Last Modified: May 16, 2002


//


// In:   name   name of file to play


//      top      x coord to place video


//      left   y coord to place video


//      right   desired width of video


//      bottom   desired height of video


//      volume   how loud video plays at (0 -> 100, 0 being silence)


//      balance   panning of video (-100 -> 100, 0 being no panning)


//


// Return:   S_OK if successful


//


// Purposes: plays video file at (top,left) coordinates with a width of


// right and a height of bottom


//////////////////////////////////////////////////////////////////////


void PimpFlicks::Play(int fileNum, int top, int left, int right, int bottom, int volume, int balance)


{


    // file name error checking


   if (fileNum < 0)


        fileNum = 0;


    if (fileNum >= m_iNumFiles)


        fileNum = m_iNumFiles - 1;


   


   // convert file name to wide character format


   WCHAR nameAsWideChar[_MAX_PATH];


   MULTI_TO_WIDE(m_strFileNames[fileNum].c_str(), nameAsWideChar);





   // holds handle to result


   HRESULT result;





   // Make the Filter Graph.


   if (FAILED(result = m_pGraphBuilder->RenderFile(nameAsWideChar, NULL)))


      throw Error("PimpFlicks::Play()", "m_pGraphBuilder->RenderFile()", result);





   // Specify owner of the Video Window.


   if (FAILED(result = m_pVideoWindow->put_Owner((OAHWND)m_hWnd)))


      throw Error("PimpFlicks::Play()", "m_pVideoWindow->put_Owner()", result);





   // The Window Styles


   if (FAILED(result = m_pVideoWindow->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS)))


      throw Error("PimpFlicks::Play()", "m_pVideoWindow->put_WindowStyle()", result);





   // Make the Video Take up desired screen size


   if (FAILED(result = m_pVideoWindow->SetWindowPosition(top, left, right, bottom)))


      throw Error("PimpFlicks::Play()", "m_pVideoWindow->SetWindowPosition()", result);





   // Set the Window to get the Event Messages.


   if (FAILED(result = m_pMediaEvent->SetNotifyWindow((OAHWND)m_hWnd, WM_GRAPHNOTIFY, 0)))


      throw Error("PimpFlicks::Play()", "m_pMediaEvent->SetNotifyWindow()", result);





   // convert 0 -> 100 PimpFlicks volume scale to dshow style


   if (volume > 100 || volume < 0)


      volume = 100;      


   volume = (volume * 100) - 10000;


   if (FAILED(result = m_pBasicAudio->put_Volume(volume)))


      throw Error("PimpFlicks::Play()", "m_pBasicAudio->put_Volume()", result);





   // convert 0 -> 100 PimpFlicks balance scale to dshow style


   if (balance > 100 || balance < -100)


      balance = 0;


   balance *= 100;


   if (FAILED(result = m_pBasicAudio->put_Balance(balance)))


      throw Error("PimpFlicks::Play()", "m_pBasicAudio->put_Balance()", result);





   // Play the File.


   if (FAILED(result = m_pMediaControl->Run()))


      throw Error("PimpFlicks::Play()", "m_pMediaControl->Run()", result);





   return;


}





//////////////////////////////////////////////////////////////////////


// Function: "Play"


//


// Last Modified: May 16, 2002


//


// In:   fileNum   number of file to play


//      rect   dimensions of video to be played on the screen


//      volume   how loud video plays at (0 -> 100, 0 being silence)


//      balance   panning of video (-100 -> 100, 0 being no panning)


//


// Return:   S_OK if successful


//


// Purposes: plays video file at (rect.top,rect.left) coordinates with


// a width of rect.right and a height of rect.bottom


//////////////////////////////////////////////////////////////////////


void PimpFlicks::Play(int fileNum, RECT rect, int volume, int balance)


{


   // pass rect to original Play function


   Play(fileNum, rect.top, rect.left, rect.right, rect.bottom, volume, balance);





    return;


}





//////////////////////////////////////////////////////////////////////


// Function: "hasFinished"


//


// Last Modified: May 16, 2002


//


// Return:   true if entire video has been played


//


// Purposes: checks for end of video


//////////////////////////////////////////////////////////////////////


bool PimpFlicks::hasFinished(void)


{


   long evCode, param1, param2;   //   Parameters to be set on Certain Messages.


   HRESULT result;               //   For Error Tracking.





   if (!m_pMediaEvent)


        return false;





    //   Call GetEvent until it returns a failure code, indicating that the queue is empty.


   while (result = m_pMediaEvent->GetEvent(&evCode, &param1, &param2, 0), SUCCEEDED(result))


   {


      result = m_pMediaEvent->FreeEventParams(evCode, param1, param2);





      //   Check to see if the Movie has finished Playing.


      if (evCode == EC_COMPLETE)


         return true;


   }





   //   Movie is not done playing.


   return false;


}