抽时间赶工完成的播放器,实现很简洁,功能简单。播放功能实现源码class MCIPlayer: 

#pragma once

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

#include <Digitalv.h>

class MCIPlayer
{
public:
MCIPlayer();
~MCIPlayer(void);

// 播放
void Play(LPCTSTR lpAudioFile, DWORD* pAudioLen = NULL);
// 暂停
void Pause();
// 继续
void Resume();
// 停止
void Stop();
// 播放时间
DWORD GetAudioLength(LPCTSTR lpAudioFile);
// 音量
void SetVolume(DWORD dwVolume); // volume: 0-1000

private:
MCIDEVICEID m_idDevPlay;
};


 

#include "StdAfx.h"
#include "MCIPlayer.h"


MCIPlayer::MCIPlayer()
: m_idDevPlay(0)
{
}

MCIPlayer::~MCIPlayer(void)
{
}

void MCIPlayer::Play(LPCTSTR lpAudioFile, DWORD* pAudioLen)
{
ATLASSERT(0 == m_idDevPlay);
// 打开设备及文件
MCI_OPEN_PARMS mciOpen;
mciOpen.lpstrElementName = lpAudioFile;
MCIERROR err = mciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_ELEMENT, (DWORD_PTR)&mciOpen);

if (err != 0)
{
return;
}

m_idDevPlay = mciOpen.wDeviceID;

if (pAudioLen)
{
MCI_STATUS_PARMS mciStatus;
mciStatus.dwItem = MCI_STATUS_LENGTH;
mciSendCommand(mciOpen.wDeviceID, MCI_STATUS, MCI_STATUS_ITEM, (DWORD_PTR)&mciStatus);
*pAudioLen = mciStatus.dwReturn;
}
// 播放
MCI_PLAY_PARMS mciPlay;
mciSendCommand(mciOpen.wDeviceID, MCI_PLAY, 0, (DWORD_PTR)&mciPlay);
}

void MCIPlayer::Pause()
{
ATLASSERT(m_idDevPlay);

MCI_GENERIC_PARMS mciPause;
mciSendCommand(m_idDevPlay, MCI_PAUSE, 0, (DWORD_PTR)&mciPause);
}

void MCIPlayer::Resume()
{
ATLASSERT(m_idDevPlay);

MCI_GENERIC_PARMS mciPause;
mciSendCommand(m_idDevPlay, MCI_RESUME, 0, (DWORD_PTR)&mciPause);
}

void MCIPlayer::Stop()
{
ATLASSERT(m_idDevPlay);

MCI_GENERIC_PARMS mciStop;
mciSendCommand(m_idDevPlay, MCI_STOP, 0, (DWORD_PTR)&mciStop);
mciSendCommand(m_idDevPlay, MCI_CLOSE, 0, NULL);
m_idDevPlay = 0;
}

DWORD MCIPlayer::GetAudioLength(LPCTSTR lpAudioFile)
{
// 打开设备及文件
MCI_OPEN_PARMS mciOpen;
mciOpen.lpstrElementName = lpAudioFile;
MCIERROR err = mciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_ELEMENT, (DWORD_PTR)&mciOpen);
// 文件解析失败
if (err != 0)
{
return 0;
}
// 获取文件播放的总长度信息
MCI_STATUS_PARMS mciStatus;
mciStatus.dwItem = MCI_STATUS_LENGTH;
mciSendCommand(mciOpen.wDeviceID, MCI_STATUS, MCI_STATUS_ITEM, (DWORD_PTR)&mciStatus);
mciSendCommand(mciOpen.wDeviceID, MCI_CLOSE, 0, NULL);

return mciStatus.dwReturn;
}

void MCIPlayer::SetVolume( DWORD dwVolume )
{
ATLASSERT(m_idDevPlay);
ATLASSERT(dwVolume <= 1000);

MCI_DGV_SETAUDIO_PARMS mciSetAudio;
mciSetAudio.dwItem = MCI_DGV_SETAUDIO_VOLUME;
mciSetAudio.dwValue = dwVolume; // Volume(0-1000)
mciSendCommand(m_idDevPlay, MCI_SETAUDIO, MCI_DGV_SETAUDIO_VALUE | MCI_DGV_SETAUDIO_ITEM, (DWORD_PTR)&mciSetAudio);
}

界面框架使用WTL,完整源码附上:

    https://files.cnblogs.com/asight/AudioPlayer.zip
给个截图:

 

 

 

 

posted on 2012-01-05 12:38  asight  阅读(2084)  评论(4编辑  收藏  举报