Synchronous playback and asynchronous playback of PlaySound

    PlaySound is a unique API function of the Windows platform. It only supports the playback of audio files in .wav format. The library file used is winmm.lib. This library file is a library file that comes with Windows. It only needs to be declared, and there is no need to add it manually. .

• The statement is as follows:

#include <windows.h>
#include <mmsystem.h>

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

• It is divided into synchronous mode and asynchronous mode.
• 1) Synchronization method

//1) MBCS编码
PlaySound("hello.wav", NULL, SND_SYNC | SND_FILENAME | SND_NOSTOP);

//2) Unicode编码
PlaySound(L"hello.wav", NULL, SND_SYNC | SND_FILENAME | SND_NOSTOP);

//3) 兼容MBCS编码与Unicode编码
PlaySound(TEXT("hello.wav"), NULL, SND_SYNC | SND_FILENAME | SND_NOSTOP);

• 2) Asynchronous way

//1) MBCS编码
PlaySound("hello.wav", NULL, SND_ASYNC | SND_FILENAME | SND_NOSTOP);

//2) Unicode编码
PlaySound(L"hello.wav", NULL, SND_ASYNC | SND_FILENAME | SND_NOSTOP);

//3) 兼容MBCS编码与Unicode编码
PlaySound(TEXT("hello.wav"), NULL, SND_ASYNC | SND_FILENAME | SND_NOSTOP);

    Here we take a console application DoPlay as an example to illustrate, the development tool used is Visual Studio 2005,
    click [File] on the Visual Studio toolbar -- "New --" Visual C++ -- "Win32 -- "Win32 console application Program--"Name: DoPaly

1 synchronous playback sync

1.1 Using multibyte character set (MBCS) encoding

    //DoPlay.cpp

#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound("hello.wav", NULL, SND_SYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

1.2 Use Unicode character set encoding

    //DoPlay.cpp

#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound(L"hello.wav", NULL, SND_SYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

1.3 Compatible with MBCS and Unicode

    //DoPlay.cpp

#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound(TEXT("hello.wav"), NULL, SND_SYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

2 Asynchronous playback Async

2.1 Using multibyte character set (MBCS) encoding

    //DoPlay.cpp

#include "stdafx.h"
#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound("hello.wav", NULL,SND_ASYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

2.2 Use Unicode character set encoding

    //DoPlay.cpp

#include "stdafx.h"
#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound(L"hello.wav", NULL,SND_ASYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

2.3 Compatible with MBCS and Unicode

    //DoPlay.cpp

#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    PlaySound(TEXT("hello.wav"), NULL, SND_ASYNC |SND_FILENAME | SND_NOSTOP);
    system("pause");
    return 0;
}

3 Appendix

• Since the PlaySound() function only supports the playback of audio files in the .wav format, the supported formats are too single.
• To support playback of audio files such as mp3, ogg, flac, oga, ac3, aac, wav, etc., please use the mciSendString() function

function	audio format
PlaySound()	Only supports .wav audio format
mciSendString()	Support mp3, ogg, flac, oga, ac3, aac, wavc and other audio formats

   

1. The function declaration of mciSendString is as follows:

BOOL mciSendString(“Command1 FILE Command2”,NULL,0,NULL);

The three variables in the formal parameter "Command1 FILE Command2" are in the relationship of logic &&, and the possible combinations are as follows:

• “Command1 FILE”
• “Command1 FILE Command2”

   
2) The header files required by the mciSendString function are as follows:

#include<windows.h>
#pragma comment(lib,"winmm.lib")

3.1 Play once

    //DoMusic.cpp

#include "stdafx.h"
#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    mciSendString(TEXT("play .\\World.mp3"), NULL, 0, NULL);
    system("pause");
    return 0;
}

3.2 Repeat playback

    //DoMusic.cpp

#include "stdafx.h"
#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    mciSendString(TEXT("play .\\World.mp3 repeat"), NULL, 0, NULL);
    system("pause");
    return 0;
}

3.3 End playback

    //DoMusic.cpp

#include "stdafx.h"
#include <windows.h>
#include <mmsystem.h>

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

int main()
{
    
    
    mciSendString(TEXT("close .\\World.mp3 repeat"), NULL, 0, NULL);
    system("pause");
    return 0;
}