466 lines
9.4 KiB
C++
466 lines
9.4 KiB
C++
#include "..\Easy2d.h"
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/* 注：MusicUtils 类完全仿照 Cocos2dx 中的 SimpleAudioEngine 实现 */
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#include <mmsystem.h>
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#pragma comment(lib , "winmm.lib")
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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(UINT uTimes = 1);
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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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bool IsPlaying();
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UINT GetSoundID();
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private:
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friend LRESULT WINAPI _SoundPlayProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
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void _SendGenericCommand(int nCommand, DWORD_PTR param1 = 0, DWORD_PTR parma2 = 0);
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HWND _wnd;
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MCIDEVICEID _dev;
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UINT _soundID;
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UINT _times;
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bool _playing;
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tstring strExt;
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};
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#define WIN_CLASS_NAME "Easy2dCallbackWnd"
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static HINSTANCE s_hInstance;
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static MCIERROR s_mciError;
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LRESULT WINAPI _SoundPlayProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
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MciPlayer::MciPlayer()
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: _wnd(NULL)
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, _dev(0L)
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, _soundID(0)
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, _times(0)
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, _playing(false)
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, strExt(_T(""))
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{
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if (!s_hInstance)
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{
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s_hInstance = GetModuleHandle(NULL); // Grab An Instance For Our Window
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WNDCLASS wc; // Windows Class Structure
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// Redraw On Size, And Own DC For Window.
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wc.style = 0;
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wc.lpfnWndProc = _SoundPlayProc; // WndProc Handles Messages
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wc.cbClsExtra = 0; // No Extra Window Data
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wc.cbWndExtra = 0; // No Extra Window Data
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wc.hInstance = s_hInstance; // Set The Instance
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wc.hIcon = 0; // Load The Default Icon
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wc.hCursor = LoadCursor(NULL, IDC_ARROW); // Load The Arrow Pointer
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wc.hbrBackground = NULL; // No Background Required For GL
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wc.lpszMenuName = NULL; // We Don't Want A Menu
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wc.lpszClassName = _T(WIN_CLASS_NAME); // Set The Class Name
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if (!RegisterClass(&wc) // Register Our Class
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&& GetLastError() != 1410) // Class is Already Existent
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{
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return;
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}
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}
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_wnd = CreateWindowEx(
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WS_EX_APPWINDOW, // Extended Style For The Window
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_T(WIN_CLASS_NAME), // Class Name
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NULL, // Window Title
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WS_POPUPWINDOW, // Defined Window Style
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0, 0, // Window Position
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0, 0, // Window Width And Height
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NULL, // No Parent Window
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NULL, // No Menu
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s_hInstance, // Instance
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NULL); // No Param
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if (_wnd)
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{
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SetWindowLongPtr(_wnd, GWLP_USERDATA, (LONG_PTR)this);
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}
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}
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MciPlayer::~MciPlayer()
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{
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Close();
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DestroyWindow(_wnd);
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}
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void MciPlayer::Open(tstring pFileName, UINT uId)
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{
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if (pFileName.empty() || !_wnd) return;
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int nLen = (int)pFileName.size();
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if (!nLen) return;
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strExt = FileUtils::getFileExtension(pFileName);
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Close();
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MCI_OPEN_PARMS mciOpen = { 0 };
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MCIERROR mciError;
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mciOpen.lpstrDeviceType = (LPCTSTR)MCI_ALL_DEVICE_ID;
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mciOpen.lpstrElementName = pFileName.c_str();
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mciError = mciSendCommand(0, MCI_OPEN, MCI_OPEN_ELEMENT, reinterpret_cast<DWORD_PTR>(&mciOpen));
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if (mciError) return;
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_dev = mciOpen.wDeviceID;
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_soundID = uId;
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_playing = false;
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}
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void MciPlayer::Play(UINT uTimes /* = 1 */)
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{
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if (!_dev)
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{
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return;
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}
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MCI_PLAY_PARMS mciPlay = { 0 };
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mciPlay.dwCallback = reinterpret_cast<DWORD_PTR>(_wnd);
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s_mciError = mciSendCommand(_dev, MCI_PLAY, MCI_FROM | MCI_NOTIFY, reinterpret_cast<DWORD_PTR>(&mciPlay));
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if (!s_mciError)
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{
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_playing = true;
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_times = uTimes;
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}
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}
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void MciPlayer::Close()
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{
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if (_playing)
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{
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Stop();
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}
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if (_dev)
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{
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_SendGenericCommand(MCI_CLOSE);
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}
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_dev = 0;
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_playing = false;
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}
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void MciPlayer::Pause()
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{
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_SendGenericCommand(MCI_PAUSE);
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_playing = false;
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}
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void MciPlayer::Resume()
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{
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if (strExt == _T(".mid"))
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{
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// midi not support MCI_RESUME, should get the position and use MCI_FROM
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MCI_STATUS_PARMS mciStatusParms;
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MCI_PLAY_PARMS mciPlayParms;
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mciStatusParms.dwItem = MCI_STATUS_POSITION;
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_SendGenericCommand(MCI_STATUS, MCI_STATUS_ITEM, reinterpret_cast<DWORD_PTR>(&mciStatusParms)); // MCI_STATUS
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mciPlayParms.dwFrom = mciStatusParms.dwReturn; // get position
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_SendGenericCommand(MCI_PLAY, MCI_FROM, reinterpret_cast<DWORD_PTR>(&mciPlayParms)); // MCI_FROM
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}
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else
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{
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_SendGenericCommand(MCI_RESUME);
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_playing = true;
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}
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}
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void MciPlayer::Stop()
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{
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_SendGenericCommand(MCI_STOP);
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_playing = false;
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_times = 0;
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}
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void MciPlayer::Rewind()
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{
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if (!_dev)
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{
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return;
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}
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mciSendCommand(_dev, MCI_SEEK, MCI_SEEK_TO_START, 0);
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MCI_PLAY_PARMS mciPlay = { 0 };
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mciPlay.dwCallback = reinterpret_cast<DWORD_PTR>(_wnd);
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_playing = mciSendCommand(_dev, MCI_PLAY, MCI_NOTIFY, reinterpret_cast<DWORD_PTR>(&mciPlay)) ? false : true;
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}
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bool MciPlayer::IsPlaying()
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{
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return _playing;
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}
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UINT MciPlayer::GetSoundID()
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{
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return _soundID;
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}
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void MciPlayer::_SendGenericCommand(int nCommand, DWORD_PTR param1 /*= 0*/, DWORD_PTR parma2 /*= 0*/)
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{
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if (!_dev)
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{
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return;
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}
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mciSendCommand(_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& sharedList()
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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& sharedMusic()
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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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sharedMusic().Close();
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for (auto& iter : sharedList())
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{
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SAFE_DELETE(iter.second);
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}
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sharedList().clear();
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return;
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}
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//////////////////////////////////////////////////////////////////////////
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// BackgroundMusic
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//////////////////////////////////////////////////////////////////////////
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/*
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void MusicUtils::setVolume(float volume)
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{
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if (volume < 0 || volume > 1) return;
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waveOutSetVolume(NULL, DWORD(volume * 65535));
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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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sharedMusic().Open(pszFilePath, ::_Hash(pszFilePath));
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sharedMusic().Play((bLoop) ? -1 : 1);
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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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sharedMusic().Close();
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}
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else
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{
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sharedMusic().Stop();
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}
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}
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void MusicUtils::pauseBackgroundMusic()
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{
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sharedMusic().Pause();
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}
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void MusicUtils::resumeBackgroundMusic()
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{
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sharedMusic().Resume();
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}
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void MusicUtils::rewindBackgroundMusic()
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{
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sharedMusic().Rewind();
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}
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bool MusicUtils::isBackgroundMusicPlaying()
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{
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return sharedMusic().IsPlaying();
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}
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//////////////////////////////////////////////////////////////////////////
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// effect function
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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 = sharedList().find(nRet);
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if (p != sharedList().end())
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{
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p->second->Play((bLoop) ? -1 : 1);
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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 = sharedList().find(nSoundId);
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if (p != sharedList().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 (sharedList().end() != sharedList().find(nRet)) return;
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sharedList().insert(Music(nRet, new MciPlayer()));
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MciPlayer * pPlayer = sharedList()[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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sharedList().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 = sharedList().find(nSoundId);
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if (p != sharedList().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 : sharedList())
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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 = sharedList().find(nSoundId);
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if (p != sharedList().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 : sharedList())
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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 : sharedList())
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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 = sharedList().find(nID);
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if (p != sharedList().end())
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{
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SAFE_DELETE(p->second);
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sharedList().erase(nID);
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}
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}
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//////////////////////////////////////////////////////////////////////////
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// static function
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//////////////////////////////////////////////////////////////////////////
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LRESULT WINAPI _SoundPlayProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
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{
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MciPlayer * pPlayer = NULL;
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if (MM_MCINOTIFY == Msg
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&& MCI_NOTIFY_SUCCESSFUL == wParam
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&& (pPlayer = (MciPlayer *)GetWindowLongPtr(hWnd, GWLP_USERDATA)))
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{
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if (pPlayer->_times)
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{
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--pPlayer->_times;
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}
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if (pPlayer->_times)
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{
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mciSendCommand(lParam, MCI_SEEK, MCI_SEEK_TO_START, 0);
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MCI_PLAY_PARMS mciPlay = { 0 };
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mciPlay.dwCallback = reinterpret_cast<DWORD_PTR>(hWnd);
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mciSendCommand(lParam, MCI_PLAY, MCI_NOTIFY, reinterpret_cast<DWORD_PTR>(&mciPlay));
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}
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else
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{
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pPlayer->_playing = false;
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}
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return 0;
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}
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return DefWindowProc(hWnd, Msg, wParam, lParam);
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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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} |