🚀 go-pugleaf

Mathias Thorell wrote:
> As I understand, the Windows MediaPlayer is using the mci API to render a 
> file, right ?

No, Windows Media Player uses DirectShow.

> What I want to do is to open a small MP3-file to see if the PC can play it 
> (and in most cases, it can't, grrr).
> If the PC is able to play MP3's, I enable a menuitem that will play 
> different, selectable MP3 HTTP Streams.

I'd suggest trying AudioLab from http://www.mitov.com

HTH

Jonathan
------------------------
TwineCompiler, blazingly fast C++ compiles on ANY machine:
http://www.jomitech.com/#twine
------------------------ 

"Jonathan Benedicto" <invalid@nobody.com> wrote in message
news:4469cd34@newsgroups.borland.com...

> No, Windows Media Player uses DirectShow.

Which in itself is not that hard to use.  I just recently wrote an app that
plays MP3s via DirectShow.  It only takes a few lines of code to play a
file, ie:

    #include <dshow.h>

    IGraphBuilder *Graph = NULL;
    IMediaControl *Control = NULL;
    IMediaSeeking *Seeker = NULL

    __fastcall TForm1::TForm1(TComponent *Owner)
        : TForm(Owner)
    {
        ::CoInitialize(NULL);
        if( SUCCEEDED(::CoCreateInstance(CLSID_FilterGraph, NULL,
CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (LPVOID*)&Graph)) )
        {
            Graph->QueryInterface(IID_IMediaControl, (LPVOID*)&Control);
            Graph->QueryInterface(IID_IMediaSeeking, (LPVOID*)&Seeker);
        }
    }

    __fastcall TForm1::~TForm1()
    {
        if( Seeker )
            Seeker->Release();

        if( Control )
        {
            Control->Stop();
            Control->Release();
        }

        if( Graph )
            Graph->Release();

        ::CoUninitialize();
    }

    void __fastcall TForm1::OpenFileButtonClick(TObject *Sender)
    {
        if( Graph && Control )
        {
            if( OpenDialog1->Execute() )
            {
                Control->Stop();
                RemoveFilters();
                Graph->RenderFile(WideString(OpenDialog1->FileName), NULL);
            }
        }
    }

    void __fastcall TForm1::PlayFileButtonClick(TObject *Sender)
    {
        if( Control && Seeker )
        {
            REFERENCE_TIME rt = 0;
            if( SUCCEEDED(Seeker->SetPositions(&rt,
AM_SEEKING_AbsolutePositioning, NULL, AM_SEEKING_NoPositioning)) )
                Control->Run();
        }
    }

    void __fastcall TForm1::RemoveFilters()
    {
        IEnumFilters* pEnumFilters = NULL;
        IBaseFilter* pFilter = NULL;
        IEnumPins* pEnumPins = NULL;
        IPin* pPin = NULL;
        IPin* pOtherPin = NULL;

        if( SUCCEEDED(Graph->EnumFilters(&pEnumFilters)) )
        {
            while( pEnumFilters->Next(1, &pFilter, NULL) == S_OK )
            {
                if( SUCCEEDED(pFilter->EnumPins(&pEnumPins)) )
                {
                    while( pEnumPins->Next(1, &pPin, NULL) == S_OK )
                    {
                        if( pPin->ConnectedTo(&pOtherPin) == S_OK )
                        {
                            Graph->Disconnect(pPin);
                            Graph->Disconnect(pOtherPin);
                            pOtherPin->Release();
                        }
                        pPin->Release();
                    }
                    pEnumPins->Release();
                }
                Graph->RemoveFilter(pFilter);
                pFilter->Release();
                pEnumFilters->Reset();
            }
            pEnumFilters->Release();
        }
    }


Gambit

Remy Lebeau (TeamB) wrote:
> "Jonathan Benedicto" <invalid@nobody.com> wrote in message
> news:4469cd34@newsgroups.borland.com...
> 
>>No, Windows Media Player uses DirectShow.

...of course...  :-]

> Which in itself is not that hard to use.  I just recently wrote an app that
> plays MP3s via DirectShow.  It only takes a few lines of code to play a
> file, ie:

Yes ! Thanks Gambit !
I had the impression that I needed to mess deeply with codes and such 
things if I wanted to use DirectShow, but I was obviously wrong.
Works like charm now !

As usual, you saved me from getting a lot of gray hairs Gambit.

1000 thanks,
/Mathias Thorell

<snip>

> Gambit
> 
> 

hmm, I tought it used vfw since after installing ffdshow some video didn't 
play anyways...

"Jonathan Benedicto" <invalid@nobody.com> ha scritto nel messaggio 
news:4469cd34@newsgroups.borland.com...
> Mathias Thorell wrote:
>> As I understand, the Windows MediaPlayer is using the mci API to render a 
>> file, right ?
>
> No, Windows Media Player uses DirectShow.
>
>> What I want to do is to open a small MP3-file to see if the PC can play 
>> it (and in most cases, it can't, grrr).
>> If the PC is able to play MP3's, I enable a menuitem that will play 
>> different, selectable MP3 HTTP Streams.
>
> I'd suggest trying AudioLab from http://www.mitov.com
>
> HTH
>
> Jonathan
> ------------------------
> TwineCompiler, blazingly fast C++ compiles on ANY machine:
> http://www.jomitech.com/#twine
> ------------------------ 
>
> 

     Hi 4N,

AudioLab supports both VFW ( actually WaveAPI + ACM ), and DirectShow. 
You can develop with one of them, the other or mix them as you wish. 
There are demos included for both technologies. It also supports native 
filters.

   With best regards,
      Boian Mitov

4N wrote:
> hmm, I tought it used vfw since after installing ffdshow some video didn't 
> play anyways...

oops, I actually were talking about TMediaPlayer of builder...
sorry for the misunderstanding...


"Boian Mitov" <mitov@mitov.com> ha scritto nel messaggio 
news:44f35520$1@newsgroups.borland.com...
>     Hi 4N,
>
> AudioLab supports both VFW ( actually WaveAPI + ACM ), and DirectShow. You 
> can develop with one of them, the other or mix them as you wish. There are 
> demos included for both technologies. It also supports native filters.
>
>   With best regards,
>      Boian Mitov
>
> 4N wrote:
>> hmm, I tought it used vfw since after installing ffdshow some video 
>> didn't play anyways...