root/trunk/Utilities/Miscellaneous/PlayMp3File/PlayMp3File.cpp

////////////////////////////////////////////////////////////
// Copyright (C) Roman Ryltsov, 2012
// Created by Roman Ryltsov roman@alax.info
// 
// $Id$

#include "stdafx.h"
#include <dshow.h>
#include <dshowasf.h>
#include <atlcom.h>

#pragma comment(lib, "strmiids.lib")

#define V(x) ATLVERIFY(SUCCEEDED(x))

int _tmain(int argc, _TCHAR* argv[])
{
        static LPCTSTR g_pszPath = _T("F:\\Music\\Cher - Walking In Memphis.mp3");
        V(CoInitialize(NULL));
        {
                CComPtr<IGraphBuilder> pGraphBuilder;
                V(pGraphBuilder.CoCreateInstance(CLSID_FilterGraph));
                // NOTE: A simpler version is good for the files you are sure of that they don't have too much of ID3 tags on the header:
                //       with a large headers the files might be rejected; the longer versions takes all .MP3 files
                #if TRUE
                        CComPtr<IBaseFilter> pBaseFilter;
                        V(pBaseFilter.CoCreateInstance(CLSID_WMAsfReader));
                        CComQIPtr<IFileSourceFilter> pFileSourceFilter = pBaseFilter;
                        ATLASSERT(pFileSourceFilter);
                        V(pFileSourceFilter->Load(CT2COLE(g_pszPath), NULL));
                        V(pGraphBuilder->AddFilter(pBaseFilter, NULL));
                        CComPtr<IEnumPins> pEnumPins;
                        V(pBaseFilter->EnumPins(&pEnumPins));
                        CComPtr<IPin> pPin;
                        ATLVERIFY(pEnumPins->Next(1, &pPin, NULL) == S_OK);
                        V(pGraphBuilder->Render(pPin));
                #else
                        V(pGraphBuilder->RenderFile(CT2CW(g_pszPath), NULL)));
                #endif
                CComQIPtr<IMediaControl> pMediaControl = pGraphBuilder;
                CComQIPtr<IMediaEvent> pMediaEvent = pGraphBuilder;
                ATLASSERT(pMediaControl && pMediaEvent);
                V(pMediaControl->Run());
                LONG nEventCode = 0;
                V(pMediaEvent->WaitForCompletion(INFINITE, &nEventCode));
        }
        CoUninitialize();
        return 0;
}