www.pudn.com > 3DRPG.rar > Music.cpp

#include "stdafx.h" 
#include "Music.h" 
 
CMusic::CMusic(HWND hWnd) 
{ 
        m_pDirectAudioPerformance = NULL; 
		m_pDirectAudioLoader = NULL; 
		m_pSegment = NULL; 
		m_pGraph = NULL; 
		m_pMediaControl = NULL; 
		m_pMediaPosition = NULL; 
		m_enumFormat = Unknown; 
 
		CoInitialize(NULL); 
		//Create the DirectAudio performance object 
		CoCreateInstance(CLSID_DirectMusicPerformance, NULL, CLSCTX_INPROC,  
						IID_IDirectMusicPerformance8, (void**) &m_pDirectAudioPerformance); 
		 
		 
		//Create the DirectAudio loader object 
		CoCreateInstance(CLSID_DirectMusicLoader, NULL, CLSCTX_INPROC,  
						IID_IDirectMusicLoader8, (void**) &m_pDirectAudioLoader); 
	 
		 
		//Initialise the performance object 
		m_pDirectAudioPerformance->InitAudio(NULL, NULL, hWnd, DMUS_APATH_SHARED_STEREOPLUSREVERB, 
										 64, DMUS_AUDIOF_ALL, NULL); 
	 
		GetCurrentDirectory(MAX_PATH, strSoundPath); 
		MultiByteToWideChar(CP_ACP, 0, strSoundPath, -1, wstrSoundPath, MAX_PATH); 
 
		m_pDirectAudioLoader->SetSearchDirectory(GUID_DirectMusicAllTypes, wstrSoundPath, FALSE); 
	 
		    CoCreateInstance(CLSID_FilterGraph, NULL, 
            CLSCTX_INPROC, IID_IGraphBuilder, (void**)&m_pGraph); 
			m_pGraph->QueryInterface(IID_IMediaControl, (void**)&m_pMediaControl); 
			m_pGraph->QueryInterface(IID_IMediaPosition, (void**)&m_pMediaPosition); 
			 
} 
 
CMusic::~CMusic() 
{ 
        m_pDirectAudioPerformance->Stop(NULL, NULL, 0, 0); 
		m_pDirectAudioPerformance->CloseDown(); 
		//SafeRRelease(m_pDirectAudioLoader); 
		//SafeRRelease(m_pDirectAudioPerformance); 
		m_pDirectAudioLoader->Release(); 
		m_pDirectAudioPerformance->Release(); 
		CoUninitialize(); 
} 
 
void CMusic::Play(int t,LPSTR pStr) 
{ 
	switch(t) 
	{ 
	case 0: 
            m_enumFormat = WavMidi; 
			//初始化WAV文件，将文件名转换为unicode 
			MultiByteToWideChar(CP_ACP, 0, "2-02 Ahead on Our Way Midi.mid", -1, wstrSoundPath, MAX_PATH); 
			//加载声音 
			m_pDirectAudioLoader->LoadObjectFromFile(CLSID_DirectMusicSegment, IID_IDirectMusicSegment8, 
													 wstrSoundPath, (void**) &m_pSegment); 
			m_pSegment->Download(m_pDirectAudioPerformance); 
			m_pSegment->SetRepeats(-1);  //这里可以设置循环次数,-1为循环播放 
			m_pDirectAudioPerformance->PlaySegmentEx(m_pSegment, NULL, NULL, 0, 0, NULL, NULL, NULL); 
			break; 
	case 1: 
		    m_enumFormat = MP3; 
			//初始化MP3文件，得到MP3文件所在的目录 
			GetCurrentDirectory(MAX_PATH, strSoundPath); 
			strcat(strSoundPath, pStr);//\\Love.mp3 
			//将文件名转换为unicode 
			MultiByteToWideChar(CP_ACP, 0, strSoundPath, -1, wstrSoundPath, MAX_PATH); 
			m_pGraph->RenderFile(wstrSoundPath, NULL); 
			m_pMediaPosition->put_CurrentPosition(0); 
			m_pMediaControl->Run(); 
			break; 
	} 
}