417 lines
7.8 KiB
C++
417 lines
7.8 KiB
C++
#include "..\easy2d.h"
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#include <mmsystem.h>
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#pragma comment(lib , "winmm.lib")
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#include <Digitalv.h>
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#include <map>
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////////////////////////////////////////////////////////////////////
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// MciPlayer
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////////////////////////////////////////////////////////////////////
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class MciPlayer
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{
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public:
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MciPlayer();
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~MciPlayer();
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void close();
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void open(tstring pFileName, UINT uId);
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void play(bool bLoop = false);
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void pause();
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void resume();
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void stop();
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void rewind();
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void setVolume(float volume);
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bool isPlaying();
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UINT getSoundID();
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private:
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void _sendCommand(int nCommand, DWORD_PTR param1 = 0, DWORD_PTR parma2 = 0);
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MCIDEVICEID m_dev;
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UINT m_nSoundID;
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bool m_bPlaying;
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bool m_bLoop;
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tstring m_sExt;
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};
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MciPlayer::MciPlayer() :
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m_dev(0L),
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m_nSoundID(0),
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m_bPlaying(false),
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m_bLoop(false),
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m_sExt(_T(""))
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{
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}
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MciPlayer::~MciPlayer()
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{
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close(); // 关闭播放器
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}
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void MciPlayer::open(tstring pFileName, UINT uId)
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{
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// 忽略不存在的文件
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if (pFileName.empty() || !PathFileExists(pFileName.c_str())) return;
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// 获取文件后缀名
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m_sExt = FileUtils::getFileExtension(pFileName);
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// 停止当前音乐
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close();
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// 设置 MCI_OPEN_PARMS 参数
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MCI_OPEN_PARMS mciOpen = { 0 };
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mciOpen.lpstrDeviceType = (LPCTSTR)MCI_ALL_DEVICE_ID;
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mciOpen.lpstrElementName = pFileName.c_str();
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// 打开这个文件
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MCIERROR mciError;
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mciError = mciSendCommand(0, MCI_OPEN, MCI_OPEN_ELEMENT, reinterpret_cast<DWORD_PTR>(&mciOpen));
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// 出现错误时，忽略这次操作
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if (mciError) return;
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// 保存设备等信息
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m_dev = mciOpen.wDeviceID;
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m_nSoundID = uId;
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m_bPlaying = false;
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}
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void MciPlayer::play(bool bLoop)
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{
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// 设备为空时，忽略这次操作
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if (!m_dev)
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{
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return;
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}
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// 设置播放参数
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MCI_PLAY_PARMS mciPlay = { 0 };
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MCIERROR s_mciError;
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// 播放声音
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s_mciError = mciSendCommand(m_dev, MCI_PLAY, MCI_FROM | (bLoop ? MCI_DGV_PLAY_REPEAT : 0), reinterpret_cast<DWORD_PTR>(&mciPlay));
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// 未出错时，置 m_bPlaying 为 true
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if (!s_mciError)
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{
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m_bPlaying = true;
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m_bLoop = bLoop;
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}
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}
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void MciPlayer::close()
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{
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// 停止音乐
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if (m_bPlaying)
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{
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stop();
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}
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// 关闭设备
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if (m_dev)
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{
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_sendCommand(MCI_CLOSE);
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}
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// 恢复默认属性
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m_dev = 0;
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m_bPlaying = false;
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}
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void MciPlayer::pause()
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{
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// 暂停音乐
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_sendCommand(MCI_PAUSE);
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m_bPlaying = false;
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}
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void MciPlayer::resume()
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{
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// 继续音乐
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if (m_sExt == _T(".mid"))
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{
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// midi 不支持 MCI_RESUME 参数，应使用 MCI_FROM 设置播放起始位置
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// 获取 MCI 状态
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MCI_STATUS_PARMS mciStatusParms;
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mciStatusParms.dwItem = MCI_STATUS_POSITION;
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_sendCommand(MCI_STATUS, MCI_STATUS_ITEM, reinterpret_cast<DWORD_PTR>(&mciStatusParms));
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// 设置播放起始位置，并开始播放
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MCI_PLAY_PARMS mciPlayParms;
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mciPlayParms.dwFrom = mciStatusParms.dwReturn;
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_sendCommand(MCI_PLAY, MCI_FROM, reinterpret_cast<DWORD_PTR>(&mciPlayParms));
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}
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else
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{
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// 继续播放音乐
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_sendCommand(MCI_RESUME);
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m_bPlaying = true;
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}
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}
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void MciPlayer::stop()
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{
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// 停止音乐
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_sendCommand(MCI_STOP);
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m_bPlaying = false;
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}
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void MciPlayer::rewind()
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{
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// 设备为空时，忽略这次操作
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if (!m_dev)
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{
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return;
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}
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// 重置播放位置
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mciSendCommand(m_dev, MCI_SEEK, MCI_SEEK_TO_START, 0);
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// 播放音乐
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MCI_PLAY_PARMS mciPlay = { 0 };
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m_bPlaying = mciSendCommand(m_dev, MCI_PLAY, (m_bLoop ? MCI_DGV_PLAY_REPEAT : 0), reinterpret_cast<DWORD_PTR>(&mciPlay)) ? false : true;
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}
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void MciPlayer::setVolume(float volume)
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{
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volume = min(max(volume, 0), 1);
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MCI_DGV_SETAUDIO_PARMS mciSetAudioPara = { 0 };
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mciSetAudioPara.dwItem = MCI_DGV_SETAUDIO_VOLUME;
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mciSetAudioPara.dwValue = DWORD(1000 * volume);
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mciSendCommand(m_dev, MCI_SETAUDIO, MCI_DGV_SETAUDIO_VALUE | MCI_DGV_SETAUDIO_ITEM, (DWORD)(LPVOID)&mciSetAudioPara);
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}
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bool MciPlayer::isPlaying()
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{
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return m_bPlaying;
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}
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UINT MciPlayer::getSoundID()
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{
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return m_nSoundID;
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}
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void MciPlayer::_sendCommand(int nCommand, DWORD_PTR param1, DWORD_PTR parma2)
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{
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// 空设备时忽略这次操作
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if (!m_dev)
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{
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return;
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}
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// 向当前设备发送操作
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mciSendCommand(m_dev, nCommand, param1, parma2);
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}
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////////////////////////////////////////////////////////////////////
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// MusicUtils
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////////////////////////////////////////////////////////////////////
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typedef std::map<unsigned int, MciPlayer *> MusicList;
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typedef std::pair<unsigned int, MciPlayer *> Music;
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static unsigned int _Hash(tstring key);
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static MusicList& getMciPlayerList()
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{
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static MusicList s_List;
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return s_List;
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}
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static MciPlayer& getBgMciPlayer()
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{
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static MciPlayer s_Music;
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return s_Music;
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}
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void MusicUtils::end()
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{
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// 停止背景音乐
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getBgMciPlayer().close();
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// 停止其他所有音乐
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for (auto& iter : getMciPlayerList())
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{
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SAFE_DELETE(iter.second);
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}
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// 清空音乐列表
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getMciPlayerList().clear();
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return;
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}
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void MusicUtils::setVolume(float volume)
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{
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// 设置背景音乐音量
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getBgMciPlayer().setVolume(volume);
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// 设置其他音乐音量
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for (auto& iter : getMciPlayerList())
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{
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iter.second->setVolume(volume);
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}
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}
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void MusicUtils::setVolume(tstring pszFilePath, float volume)
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{
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unsigned int nRet = ::_Hash(pszFilePath);
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MusicList::iterator p = getMciPlayerList().find(nRet);
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if (p != getMciPlayerList().end())
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{
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p->second->setVolume(volume);
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}
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}
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void MusicUtils::playBackgroundMusic(tstring pszFilePath, bool bLoop)
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{
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if (pszFilePath.empty())
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{
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return;
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}
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getBgMciPlayer().open(pszFilePath, ::_Hash(pszFilePath));
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getBgMciPlayer().play(bLoop);
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}
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void MusicUtils::stopBackgroundMusic(bool bReleaseData)
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{
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if (bReleaseData)
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{
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getBgMciPlayer().close();
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}
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else
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{
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getBgMciPlayer().stop();
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}
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}
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void MusicUtils::pauseBackgroundMusic()
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{
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getBgMciPlayer().pause();
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}
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void MusicUtils::resumeBackgroundMusic()
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{
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getBgMciPlayer().resume();
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}
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void MusicUtils::rewindBackgroundMusic()
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{
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getBgMciPlayer().rewind();
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}
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bool MusicUtils::isBackgroundMusicPlaying()
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{
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return getBgMciPlayer().isPlaying();
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}
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void MusicUtils::setBackgroundMusicVolume(float volume)
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{
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getBgMciPlayer().setVolume(volume);
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}
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unsigned int MusicUtils::playMusic(tstring pszFilePath, bool bLoop)
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{
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unsigned int nRet = ::_Hash(pszFilePath);
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preloadMusic(pszFilePath);
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MusicList::iterator p = getMciPlayerList().find(nRet);
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if (p != getMciPlayerList().end())
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{
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p->second->play(bLoop);
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}
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return nRet;
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}
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void MusicUtils::stopMusic(unsigned int nSoundId)
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{
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MusicList::iterator p = getMciPlayerList().find(nSoundId);
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if (p != getMciPlayerList().end())
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{
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p->second->stop();
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}
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}
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void MusicUtils::preloadMusic(tstring pszFilePath)
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{
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if (pszFilePath.empty()) return;
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int nRet = ::_Hash(pszFilePath);
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if (getMciPlayerList().end() != getMciPlayerList().find(nRet)) return;
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getMciPlayerList().insert(Music(nRet, new MciPlayer()));
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MciPlayer * pPlayer = getMciPlayerList()[nRet];
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pPlayer->open(pszFilePath, nRet);
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if (nRet == pPlayer->getSoundID()) return;
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delete pPlayer;
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getMciPlayerList().erase(nRet);
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nRet = 0;
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}
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void MusicUtils::pauseMusic(unsigned int nSoundId)
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{
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MusicList::iterator p = getMciPlayerList().find(nSoundId);
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if (p != getMciPlayerList().end())
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{
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p->second->pause();
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}
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}
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void MusicUtils::pauseAllMusics()
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{
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for (auto& iter : getMciPlayerList())
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{
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iter.second->pause();
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}
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}
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void MusicUtils::resumeMusic(unsigned int nSoundId)
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{
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MusicList::iterator p = getMciPlayerList().find(nSoundId);
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if (p != getMciPlayerList().end())
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{
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p->second->resume();
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}
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}
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void MusicUtils::resumeAllMusics()
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{
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for (auto& iter : getMciPlayerList())
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{
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iter.second->resume();
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}
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}
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void MusicUtils::stopAllMusics()
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{
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for (auto& iter : getMciPlayerList())
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{
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iter.second->stop();
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}
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}
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void MusicUtils::unloadMusic(LPCTSTR pszFilePath)
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{
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unsigned int nID = ::_Hash(pszFilePath);
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MusicList::iterator p = getMciPlayerList().find(nID);
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if (p != getMciPlayerList().end())
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{
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SAFE_DELETE(p->second);
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getMciPlayerList().erase(nID);
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}
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}
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unsigned int _Hash(tstring key)
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{
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unsigned int len = unsigned(key.size());
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unsigned int hash = 0;
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for (unsigned i = 0; i < len; i++)
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{
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hash *= 16777619;
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hash ^= (unsigned int)(unsigned char)toupper(key[i]);
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}
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return (hash);
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} |