wavemain.cpp
资源名称:SMDK2440.rar [点击查看]
上传用户:qiulin1960
上传日期:2013-10-16
资源大小:2844k
文件大小:19k
源码类别:
Windows CE
开发平台:
Windows_Unix
- // -----------------------------------------------------------------------------
- //
- // THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
- // ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
- // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
- // PARTICULAR PURPOSE.
- // Copyright (c) 1995-2000 Microsoft Corporation. All rights reserved.
- //
- // -----------------------------------------------------------------------------
- #include "wavemain.h"
- /*
- #ifdef DEBUG
- DBGPARAM dpCurSettings = {
- TEXT("WaveDriver"), {
- TEXT("Test") // 0
- ,TEXT("Params") // 1
- ,TEXT("Verbose") // 2
- ,TEXT("Interrupt") // 3
- ,TEXT("WODM") // 4
- ,TEXT("WIDM") // 5
- ,TEXT("PDD") // 6
- ,TEXT("MDD") // 7
- ,TEXT("Regs") // 8
- ,TEXT("Misc") // 9
- ,TEXT("Init") // 10
- ,TEXT("IOcontrol") // 11
- ,TEXT("Alloc") // 12
- ,TEXT("Function") // 13
- ,TEXT("Warning") // 14
- ,TEXT("Error") // 15
- }
- ,
- (1 << 15) // Errors
- | (1 << 14) // Warnings
- };
- #endif
- */
- BOOL CALLBACK DllMain(HANDLE hDLL,
- DWORD dwReason,
- LPVOID lpvReserved)
- {
- if ( dwReason==DLL_PROCESS_ATTACH )
- {
- DEBUGREGISTER((HMODULE)hDLL);
- }
- return TRUE;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @topic WAV Device Interface | Implements the WAVEDEV.DLL device
- // interface. These functions are required for the device to
- // be loaded by DEVICE.EXE.
- //
- // @xref <nl>
- // <f WAV_Init>, <nl>
- // <f WAV_Deinit>, <nl>
- // <f WAV_Open>, <nl>
- // <f WAV_Close>, <nl>
- // <f WAV_Read>, <nl>
- // <f WAV_Write>, <nl>
- // <f WAV_Seek>, <nl>
- // <f WAV_PowerUp>, <nl>
- // <f WAV_PowerDown>, <nl>
- // <f WAV_IOControl> <nl>
- //
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @topic Designing a Waveform Audio Driver |
- // A waveform audio driver is responsible for processing messages
- // from the Wave API Manager (WAVEAPI.DLL) to playback and record
- // waveform audio. Waveform audio drivers are implemented as
- // dynamic link libraries that are loaded by DEVICE.EXE The
- // default waveform audio driver is named WAVEDEV.DLL (see figure).
- // The messages passed to the audio driver are similar to those
- // passed to a user-mode Windows NT audio driver (such as mmdrv.dll).
- //
- // <bmp blk1_bmp>
- //
- // Like all device drivers loaded by DEVICE.EXE, the waveform
- // audio driver must export the standard device functions,
- // XXX_Init, XXX_Deinit, XXX_IoControl, etc (see
- // <t WAV Device Interface>). The Waveform Audio Drivers
- // have a device prefix of "WAV".
- //
- // Driver loading and unloading is handled by DEVICE.EXE and
- // WAVEAPI.DLL. Calls are made to <f WAV_Init> and <f WAV_Deinit>.
- // When the driver is opened by WAVEAPI.DLL calls are made to
- // <f WAV_Open> and <f WAV_Close>. On system power up and power down
- // calls are made to <f WAV_PowerUp> and <f WAV_PowerDown>. All
- // other communication between WAVEAPI.DLL and WAVEDEV.DLL is
- // done by calls to <f WAV_IOControl>. The other WAV_xxx functions
- // are not used.
- //
- // @xref <nl>
- // <t Designing a Waveform Audio PDD> <nl>
- // <t WAV Device Interface> <nl>
- // <t Wave Input Driver Messages> <nl>
- // <t Wave Output Driver Messages> <nl>
- //
- // -----------------------------------------------------------------------------
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func PVOID | WAV_Init | Device initialization routine
- //
- // @parm DWORD | dwInfo | info passed to RegisterDevice
- //
- // @rdesc Returns a DWORD which will be passed to Open & Deinit or NULL if
- // unable to initialize the device.
- //
- // -----------------------------------------------------------------------------
- DWORD WAV_Init(DWORD Index)
- {
- return (DWORD)HardwareContext::CreateHWContext(Index);
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func PVOID | WAV_Deinit | Device deinitialization routine
- //
- // @parm DWORD | dwData | value returned from WAV_Init call
- //
- // @rdesc Returns TRUE for success, FALSE for failure.
- //
- // -----------------------------------------------------------------------------
- BOOL WAV_Deinit(DWORD dwData)
- {
- return g_pHWContext->Deinit();
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func PVOID | WAV_Open | Device open routine
- //
- // @parm DWORD | dwData | Value returned from WAV_Init call (ignored)
- //
- // @parm DWORD | dwAccess | Requested access (combination of GENERIC_READ
- // and GENERIC_WRITE) (ignored)
- //
- // @parm DWORD | dwShareMode | Requested share mode (combination of
- // FILE_SHARE_READ and FILE_SHARE_WRITE) (ignored)
- //
- // @rdesc Returns a DWORD which will be passed to Read, Write, etc or NULL if
- // unable to open device.
- //
- // -----------------------------------------------------------------------------
- DWORD WAV_Open( DWORD dwData,
- DWORD dwAccess,
- DWORD dwShareMode)
- {
- return 4;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func BOOL | WAV_Close | Device close routine
- //
- // @parm DWORD | dwOpenData | Value returned from WAV_Open call
- //
- // @rdesc Returns TRUE for success, FALSE for failure
- //
- // -----------------------------------------------------------------------------
- BOOL WAV_Close(DWORD dwData)
- {
- return TRUE;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func DWORD | WAV_Read | Device read routine
- //
- // @parm DWORD | dwOpenData | Value returned from WAV_Open call (ignored)
- //
- // @parm LPVOID | pBuf | Buffer to receive data (ignored)
- //
- // @parm DWORD | len | Maximum length to read (ignored)
- //
- // @rdesc Returns 0 always. WAV_Read should never get called and does
- // nothing. Required DEVICE.EXE function, but all data communication
- // is handled by <f WAV_IOControl>.
- //
- // -----------------------------------------------------------------------------
- DWORD WAV_Read(DWORD dwData,
- LPVOID pBuf,
- DWORD Len)
- {
- // Return length read
- return 0;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func DWORD | WAV_Write | Device write routine
- //
- // @parm DWORD | dwOpenData | Value returned from WAV_Open call (ignored)
- //
- // @parm LPCVOID | pBuf | Buffer containing data (ignored)
- //
- // @parm DWORD | len | Maximum length to write (ignored)
- //
- // @rdesc Returns 0 always. WAV_Write should never get called and does
- // nothing. Required DEVICE.EXE function, but all data communication
- // is handled by <f WAV_IOControl>.
- //
- // -----------------------------------------------------------------------------
- DWORD WAV_Write(DWORD dwData,
- LPCVOID pBuf,
- DWORD Len)
- {
- // return number of bytes written (or -1 for error)
- return 0;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func DWORD | WAV_Seek | Device seek routine
- //
- // @parm DWORD | dwOpenData | Value returned from WAV_Open call (ignored)
- //
- // @parm long | pos | Position to seek to (relative to type) (ignored)
- //
- // @parm DWORD | type | FILE_BEGIN, FILE_CURRENT, or FILE_END (ignored)
- //
- // @rdesc Returns -1 always. WAV_Seek should never get called and does
- // nothing. Required DEVICE.EXE function, but all data communication
- // is handled by <f WAV_IOControl>.
- //
- // -----------------------------------------------------------------------------
- DWORD WAV_Seek(DWORD dwData,
- long pos,
- DWORD type)
- {
- // return an error
- return (DWORD)-1;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func void | WAV_PowerUp | Device powerup routine
- //
- // @comm Called to restore device from suspend mode. Cannot call any
- // routines aside from those in the dll in this call.
- //
- // -----------------------------------------------------------------------------
- VOID WAV_PowerUp(VOID)
- {
- g_pHWContext->PowerUp();
- return;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func void | WAV_PowerDown | Device powerdown routine
- //
- // @comm Called to suspend device. Cannot call any routines aside from
- // those in the dll in this call.
- //
- // -----------------------------------------------------------------------------
- VOID WAV_PowerDown(VOID)
- {
- g_pHWContext->PowerDown();
- return;
- }
- BOOL HandleWaveMessage(PMMDRV_MESSAGE_PARAMS pParams, DWORD *pdwResult)
- {
- // set the error code to be no error first
- SetLastError(MMSYSERR_NOERROR);
- UINT uMsg = pParams->uMsg;
- UINT uDeviceId = pParams->uDeviceId;
- DWORD dwParam1 = pParams->dwParam1;
- DWORD dwParam2 = pParams->dwParam2;
- DWORD dwUser = pParams->dwUser;
- StreamContext *pStreamContext = (StreamContext *)dwUser;
- DWORD dwRet;
- g_pHWContext->Lock();
- switch (uMsg)
- {
- case WODM_GETNUMDEVS:
- {
- dwRet = g_pHWContext->GetNumOutputDevices();
- break;
- }
- case WIDM_GETNUMDEVS:
- {
- dwRet = g_pHWContext->GetNumInputDevices();
- break;
- }
- case WODM_GETDEVCAPS:
- {
- DeviceContext *pDeviceContext;
- UINT NumDevs = g_pHWContext->GetNumOutputDevices();
- if (pStreamContext)
- {
- pDeviceContext=pStreamContext->GetDeviceContext();
- }
- else
- {
- pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- }
- dwRet = pDeviceContext->GetDevCaps((PVOID)dwParam1,dwParam2);
- break;
- }
- case WIDM_GETDEVCAPS:
- {
- DeviceContext *pDeviceContext;
- UINT NumDevs = g_pHWContext->GetNumInputDevices();
- if (pStreamContext)
- {
- pDeviceContext=pStreamContext->GetDeviceContext();
- }
- else
- {
- pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
- }
- dwRet = pDeviceContext->GetDevCaps((PVOID)dwParam1,dwParam2);
- break;
- }
- case WODM_GETEXTDEVCAPS:
- {
- DeviceContext *pDeviceContext;
- UINT NumDevs = g_pHWContext->GetNumOutputDevices();
- if (pStreamContext)
- {
- pDeviceContext=pStreamContext->GetDeviceContext();
- }
- else
- {
- pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- }
- dwRet = pDeviceContext->GetExtDevCaps((PVOID)dwParam1,dwParam2);
- break;
- }
- case WODM_OPEN:
- {
- // DEBUGMSG(1, (TEXT("WODM_OPENrn"));
- DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
- break;
- }
- case WIDM_OPEN:
- {
- // DEBUGMSG(1, (TEXT("WIDM_OPENrn"));
- DeviceContext *pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
- dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
- break;
- }
- case WODM_CLOSE:
- case WIDM_CLOSE:
- {
- // DEBUGMSG(1, (TEXT("WIDM_CLOSE/WODM_CLOSErn"));
- dwRet = pStreamContext->Close();
- // Release stream context here, rather than inside StreamContext::Close, so that if someone
- // (like CMidiStream) has subclassed Close there's no chance that the object will get released
- // out from under them.
- if (dwRet==MMSYSERR_NOERROR)
- {
- pStreamContext->Release();
- }
- break;
- }
- case WODM_RESTART:
- case WIDM_START:
- {
- dwRet = pStreamContext->Run();
- break;
- }
- case WODM_PAUSE:
- case WIDM_STOP:
- {
- dwRet = pStreamContext->Stop();
- break;
- }
- case WODM_GETPOS:
- case WIDM_GETPOS:
- {
- dwRet = pStreamContext->GetPos((PMMTIME)dwParam1);
- break;
- }
- case WODM_RESET:
- case WIDM_RESET:
- {
- dwRet = pStreamContext->Reset();
- break;
- }
- case WODM_WRITE:
- case WIDM_ADDBUFFER:
- {
- // DEBUGMSG(1, (TEXT("WODM_WRITE/WIDM_ADDBUFFER, Buffer=0x%xrn"),dwParam1);
- dwRet = pStreamContext->QueueBuffer((LPWAVEHDR)dwParam1);
- break;
- }
- case WODM_GETVOLUME:
- {
- PULONG pdwGain = (PULONG)dwParam1;
- UINT NumDevs = g_pHWContext->GetNumOutputDevices();
- if (pStreamContext)
- {
- *pdwGain = pStreamContext->GetGain();
- }
- else
- {
- DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- *pdwGain = pDeviceContext->GetGain();
- }
- dwRet = MMSYSERR_NOERROR;
- break;
- }
- case WODM_SETVOLUME:
- {
- UINT NumDevs = g_pHWContext->GetNumOutputDevices();
- LONG dwGain = dwParam1;
- if (pStreamContext)
- {
- dwRet = pStreamContext->SetGain(dwGain);
- }
- else
- {
- DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- dwRet = pDeviceContext->SetGain(dwGain);
- }
- break;
- }
- case WODM_BREAKLOOP:
- {
- dwRet = pStreamContext->BreakLoop();
- break;
- }
- case WODM_SETPLAYBACKRATE:
- {
- WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
- dwRet = pWaveStream->SetRate(dwParam1);
- break;
- }
- case WODM_GETPLAYBACKRATE:
- {
- WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
- dwRet = pWaveStream->GetRate((DWORD *)dwParam1);
- break;
- }
- case MM_WOM_SETSECONDARYGAINCLASS:
- {
- dwRet = pStreamContext->SetSecondaryGainClass(dwParam1);
- break;
- }
- case MM_WOM_SETSECONDARYGAINLIMIT:
- {
- DeviceContext *pDeviceContext;
- if (pStreamContext)
- {
- pDeviceContext = pStreamContext->GetDeviceContext();
- }
- else
- {
- pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
- }
- dwRet = pDeviceContext->SetSecondaryGainLimit(dwParam1,dwParam2);
- break;
- }
- /*
- case MM_WOM_FORCESPEAKER:
- {
- if (pStreamContext)
- {
- dwRet = pStreamContext->ForceSpeaker((BOOL)dwParam1);
- }
- else
- {
- dwRet = g_pHWContext->ForceSpeaker((BOOL)dwParam1);
- }
- break;
- }
- */
- case MM_MOM_MIDIMESSAGE:
- {
- CMidiStream *pMidiStream = (CMidiStream *)dwUser;
- dwRet = pMidiStream->MidiMessage(dwParam1);
- break;
- }
- case WODM_GETPITCH:
- case WODM_SETPITCH:
- case WODM_PREPARE:
- case WODM_UNPREPARE:
- case WIDM_PREPARE:
- case WIDM_UNPREPARE:
- default:
- dwRet = MMSYSERR_NOTSUPPORTED;
- }
- g_pHWContext->Unlock();
- // Pass the return code back via pBufOut
- if (pdwResult)
- {
- *pdwResult = dwRet;
- }
- return TRUE;
- }
- // -----------------------------------------------------------------------------
- //
- // @doc WDEV_EXT
- //
- // @func BOOL | WAV_IOControl | Device IO control routine
- //
- // @parm DWORD | dwOpenData | Value returned from WAV_Open call
- //
- // @parm DWORD | dwCode |
- // IO control code for the function to be performed. WAV_IOControl only
- // supports one IOCTL value (IOCTL_WAV_MESSAGE)
- //
- // @parm PBYTE | pBufIn |
- // Pointer to the input parameter structure (<t MMDRV_MESSAGE_PARAMS>).
- //
- // @parm DWORD | dwLenIn |
- // Size in bytes of input parameter structure (sizeof(<t MMDRV_MESSAGE_PARAMS>)).
- //
- // @parm PBYTE | pBufOut | Pointer to the return value (DWORD).
- //
- // @parm DWORD | dwLenOut | Size of the return value variable (sizeof(DWORD)).
- //
- // @parm PDWORD | pdwActualOut | Unused
- //
- // @rdesc Returns TRUE for success, FALSE for failure
- //
- // @xref <t Wave Input Driver Messages> (WIDM_XXX) <nl>
- // <t Wave Output Driver Messages> (WODM_XXX)
- //
- // -----------------------------------------------------------------------------
- BOOL WAV_IOControl(DWORD dwOpenData,
- DWORD dwCode,
- PBYTE pBufIn,
- DWORD dwLenIn,
- PBYTE pBufOut,
- DWORD dwLenOut,
- PDWORD pdwActualOut)
- {
- _try
- {
- switch (dwCode)
- {
- case IOCTL_WAV_MESSAGE:
- return HandleWaveMessage((PMMDRV_MESSAGE_PARAMS)pBufIn, (DWORD *)pBufOut);
- default:
- return g_pHWContext->IOControl(dwOpenData, dwCode, pBufIn, dwLenIn, pBufOut, dwLenOut, pdwActualOut);
- }
- }
- _except (GetExceptionCode() == STATUS_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
- {
- RETAILMSG(1, (TEXT("EXCEPTION IN WAV_IOControl!!!!rn")));
- SetLastError(E_FAIL);
- }
- return FALSE;
- }