[c++新手学习]windows下如何使用c++播放mp3

时间：2025-03-15 07:35:48

毫无疑问，c++本身无法播放声音。在windows下可以借助mci(媒体控制接口)播放MP3资源，并且很好的控制播放对象。如果你是C++新人，想写一个控制台下播放mp3的小程序，那么本文完全适合你。<p></p><p>调用mci一般要借助mciSendString函数，使用该函数需要包含头文件 然而这样一来就会依赖整个mfc框架，导致普通的控制台程序根本无法编译（其实是链接不过去）。所以我在下面的代码中直接从系统的  中调用函数，即使用LoadLibraryA("") 。C++新人可能不懂这些，没关系，你只要知道我的代码可以直接贴到你的控制台程序中去就行了。</p><p>文件</p><p></p><pre name="code" class="cpp">#include<string>
<pre name="code" class="cpp">#include<>
typedef  int(__stdcall* w32mci)(const char*, char*, int,  int);
typedef int(__stdcall *  w32mcierror)(int, char*, int);
class Mci
{
private:
	HINSTANCE hins;
	w32mci wmci;
	w32mcierror wmcierror;
public:
	Mci();
	~Mci();
	char buf[256];
	bool send(std::string command);//error  return false 
};
class AudioClip
{
private:
	Mci mci;
	std::string filename;
	std::string alias;
	int length_ms;
public:
	AudioClip();
	~AudioClip();
	bool load(const  std::string& _filename);
	bool play(int start_ms=0, int end_ms=-1);
	bool stop();
	bool pause();
	bool unpause();
	int milliseconds();
};


 实现文件： 

 

 

 

<pre name="code" class="cpp">#include"audio_clip.h"
#include<iostream>
#include<random>
#include<>
Mci::Mci()
{
	HINSTANCE hins = LoadLibraryA("");
	wmci=(w32mci)GetProcAddress(hins, "mciSendStringA");
	wmcierror = (w32mcierror)GetProcAddress(hins, "mciGetErrorStringA");	
}
Mci::~Mci()
{
	FreeLibrary(hins);
}
bool Mci::send(std::string command)
{
	int errcode = wmci(command.c_str(), buf, 254, 0);
	if (errcode)
	{
		wmcierror(errcode, buf, 254);
		return false;
	}
	return true;
}
AudioClip::AudioClip()
{
	//do nothing
}
AudioClip::~AudioClip()
{
	std::string cmd;
	cmd = "close " + alias;
	(cmd);
}
bool AudioClip::load(const std::string& _filename)
{
	filename = _filename;
	for (unsigned int i = 0; i < (); i++)
	{
		if (filename[i] == '/')
			filename[i] = '\\';
	}
	alias = "mp3_";
	srand(time(NULL));
	char randstr[6];
	_itoa(rand() % 65536, randstr, 10);
	(randstr);
	std::string cmd;
	cmd = "open " + filename + " alias " + alias;
	if ((cmd) == false)
		return false;
	cmd = "set " + alias + " time format milliseconds";
	if ((cmd) == false)
		return false;
	cmd = "status " + alias + " length";
	if ((cmd) == false)
		return false;
	length_ms = atoi();
	return true;
}
bool AudioClip::play(int start_ms , int end_ms)
{
	if (end_ms == -1) end_ms = length_ms;
	std::string cmd;
	char start_str[16], end_str[16];
	_itoa(start_ms, start_str,10);
	_itoa(end_ms, end_str, 10);
	cmd = "play " + alias+" from ";
	(start_str);
	(" to ");
	(end_str);
	return (cmd);
}
bool AudioClip::stop()
{
	std::string cmd;
	cmd = "stop "+alias;
	if ((cmd) == false)
		return false;
	cmd = "seek " + alias + " to start";
	if ((cmd) == false)
		return false;
	return true;
}
bool AudioClip::pause()
{
	std::string cmd;
	cmd = "pause " + alias;
	if ((cmd) == false)
		return false;
	return true;
}
bool AudioClip::unpause()
{
	std::string cmd;
	cmd = "resume " + alias;
	if ((cmd) == false)
		return false;
	return true;
}
int AudioClip::milliseconds()
{
	return length_ms;
}

 


 代码就这么多，在你的代码中这样做就可以播放了 

 

 

#include"audio_clip.h"
int main()
{
	AudioClip ac;
	("D:/****.mp3");
	();
	system("pause");
}
 


 


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