main.cpp

C-Media8738/8768声卡驱动开发源码

/*
Copyright (c) 2006-2007 dogbert <[e-mail]>
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "main.h"


void PrintLastError(LPCSTR function)
{
	LPVOID	lpMsgBuf;
	DWORD   errorid = GetLastError();

	FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM, NULL, errorid, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR) &lpMsgBuf, 0, NULL );
	MessageBox(NULL, (LPCSTR)lpMsgBuf, function, MB_ICONEXCLAMATION | MB_OK);
	LocalFree(lpMsgBuf);
}

BOOL generateTestSignal(double amplitude, int Channels, int SamplesPerSec, SHORT** buffer)
{
	int    i, o2, o3, o4, o5;
	bool   Left,Right,BackLeft,BackRight,Center,Sub, CenterLeft, CenterRight;
	short  value;
	double x = SPEAKER_FREQUENCY*2*3.141592654/SamplesPerSec;
	double y = BASS_FREQUENCY*2*3.141592654/SamplesPerSec;

	Left        = (SendMessage(GetDlgItem(hWndChild[0], IDC_LEFT), BM_GETCHECK, 0, 0) == BST_CHECKED);
	Right       = (SendMessage(GetDlgItem(hWndChild[0], IDC_RIGHT), BM_GETCHECK, 0, 0) == BST_CHECKED);
	BackLeft    = (SendMessage(GetDlgItem(hWndChild[0], IDC_BLEFT), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 2);
	BackRight   = (SendMessage(GetDlgItem(hWndChild[0], IDC_BRIGHT), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 2);
	Center      = (SendMessage(GetDlgItem(hWndChild[0], IDC_CENTER), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 4);
	Sub         = (SendMessage(GetDlgItem(hWndChild[0], IDC_SUB), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 4);
	CenterLeft  = (SendMessage(GetDlgItem(hWndChild[0], IDC_CLEFT), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 6);
	CenterRight = (SendMessage(GetDlgItem(hWndChild[0], IDC_CRIGHT), BM_GETCHECK, 0, 0) == BST_CHECKED) && (currentChannelCount > 6);

	if (!(Left || Right || BackLeft || BackRight || Center || Sub || CenterLeft || CenterRight)) {
		return FALSE;
	}

	if (currentChannelCount > 4) {
		o2 = 4; o3 = 5;
		o4 = 2; o5 = 3;
	} else {
		o2 = 2; o3 = 3;
		o4 = 4; o5 = 5;
	}

	(*buffer) = (SHORT*)LocalAlloc(LPTR, SamplesPerSec*sizeof(SHORT)*Channels);
	ZeroMemory((*buffer), SamplesPerSec*sizeof(SHORT)*Channels);

	for (i=0;i<SamplesPerSec;i++) {
		value = (SHORT)(cos(i*x)*amplitude*32767.0);
		if (Left) {
			(*buffer)[(i*Channels)+0] = value;
		}
		if (Right) {
			(*buffer)[(i*Channels)+1] = value;
		}
		if (BackLeft) {
			(*buffer)[(i*Channels)+o2] = value;
		}
		if (BackRight) {
			(*buffer)[(i*Channels)+o3] = value;
		}
		if (Center) {
			(*buffer)[(i*Channels)+o4] = value;
		}
		if (Sub) {
			(*buffer)[(i*Channels)+o5] = (SHORT)(cos(i*y)*amplitude*32767.0);
		}
		if (CenterLeft) {
			(*buffer)[(i*Channels)+6] = value;
		}
		if (CenterRight) {
			(*buffer)[(i*Channels)+7] = value;
		}
	}
	return TRUE;
}

BOOL stopTestTone(void)
{
	if (hWave == NULL) {
		return FALSE;
	}

	if (waveOutReset(hWave) != MMSYSERR_NOERROR) {
		PrintLastError("waveOutReset()");
		return FALSE;
	}
	if (waveOutClose(hWave) != MMSYSERR_NOERROR) {
		PrintLastError("waveOutClose()");
		return FALSE;
	}
	hWave = NULL;
	LocalFree(pwh.lpData);
	return TRUE;
}

UINT findWaveDeviceID()
{
	WAVEOUTCAPS  woc;
	UINT         i, numDev;

	numDev = waveOutGetNumDevs();
	for (i=0;i<numDev;i++) {
	    if (!waveOutGetDevCaps(i, &woc, sizeof(WAVEOUTCAPS))) {
			if ((CompareString(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, woc.szPname, -1, TEXT("CMI8738/8768 Wave"), -1) == CSTR_EQUAL) ||
			    (CompareString(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, woc.szPname, -1, TEXT("Speakers (CMI8738/8768 Audio De"), -1) == CSTR_EQUAL)) {
				return i;
			}
    	}
	}
	return WAVE_MAPPER;
}

BOOL playTestTone()
{
	SHORT*               buffer;
#if 1
	WAVEFORMATEXTENSIBLE wfx;

	ZeroMemory(&wfx, sizeof(WAVEFORMATEXTENSIBLE));
	wfx.Format.wFormatTag           = WAVE_FORMAT_EXTENSIBLE;
	wfx.Format.nChannels            = (WORD)currentChannelCount;
	wfx.Format.nSamplesPerSec       = SAMPLE_RATE;
	wfx.Format.wBitsPerSample       = 16;
	wfx.Format.nBlockAlign          = (wfx.Format.wBitsPerSample >> 3) * wfx.Format.nChannels;
	wfx.Format.nAvgBytesPerSec      = SAMPLE_RATE * (wfx.Format.wBitsPerSample >> 3) * wfx.Format.nChannels;
	wfx.Format.cbSize               = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
	wfx.Samples.wValidBitsPerSample = wfx.Format.wBitsPerSample ;
	wfx.SubFormat                   = KSDATAFORMAT_SUBTYPE_PCM;
#else
	WAVEFORMATEX         wfx;
	wfx.wFormatTag      = WAVE_FORMAT_PCM;
	wfx.wBitsPerSample  = 16;
	wfx.nChannels       = (WORD)currentChannelCount;
	wfx.nSamplesPerSec  = SAMPLE_RATE;
	wfx.nAvgBytesPerSec = SAMPLE_RATE * (wfx.wBitsPerSample >> 3) * wfx.nChannels;
	wfx.nBlockAlign     = (wfx.wBitsPerSample >> 3) * wfx.nChannels;
	wfx.cbSize          = 0;
#endif

	if (waveOutOpen(&hWave, findWaveDeviceID(), (WAVEFORMATEX*)&(wfx), 0, 0, CALLBACK_NULL) != MMSYSERR_NOERROR) {
		PrintLastError("waveOutOpen()");
		return FALSE;
	}

	if (!generateTestSignal(SPEAKER_AMPLITUDE, currentChannelCount, SAMPLE_RATE, &buffer)) {
		return FALSE;
	}

	ZeroMemory(&pwh, sizeof(pwh));
	pwh.lpData         = (LPSTR)buffer;
	pwh.dwBufferLength = SAMPLE_RATE*sizeof(SHORT)*currentChannelCount;
	pwh.dwFlags        = WHDR_BEGINLOOP | WHDR_ENDLOOP;
	pwh.dwLoops        = 0xFFFFFFFF;
	if (waveOutPrepareHeader(hWave, &pwh, sizeof(pwh)) != MMSYSERR_NOERROR) {
		LocalFree(buffer);
		PrintLastError("waveOutPrepareHeader()");
		return FALSE;
	}

 	if (waveOutReset(hWave) != MMSYSERR_NOERROR) {
		LocalFree(buffer);
		PrintLastError("waveOutReset()");
		return FALSE;
	}
	if (waveOutWrite(hWave, &pwh, sizeof(WAVEHDR)) != MMSYSERR_NOERROR) {
		LocalFree(buffer);
		PrintLastError("waveOutWrite()");
		return FALSE;
	}

	return TRUE;
}


BOOL CALLBACK DSEnumProc(LPGUID lpGUID, LPCTSTR lpszDesc, LPCTSTR lpszDrvName, LPVOID lpContext)
{
	LPGUID* pGUID = (LPGUID*)lpContext;

	if (pGUID == NULL) {
		return FALSE;
	}
	if ((*pGUID) != NULL) {
		return TRUE;
	}

	if (lpGUID != NULL) {
		// XP, 2k
	    if ((CompareString(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, lpszDrvName, -1, TEXT("cmipci.sys"), -1) == CSTR_EQUAL) &&
		  (CompareString(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, lpszDesc, -1, TEXT("CMI8738/8768 Wave"), -1) == CSTR_EQUAL)) {
			(*pGUID) = (LPGUID)LocalAlloc(LPTR, sizeof(GUID));
			memcpy((*pGUID), lpGUID, sizeof(GUID));
			return TRUE;
		}
		// Vista
		if (CompareString(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT), NORM_IGNORECASE, lpszDesc, -1, TEXT("Speakers (CMI8738/8768 Audio Device)"), -1) == CSTR_EQUAL) {
			(*pGUID) = (LPGUID)LocalAlloc(LPTR, sizeof(GUID));
			memcpy((*pGUID), lpGUID, sizeof(GUID));
			return TRUE;
		}
	}
	return TRUE;
}

BOOL getCurrentChannelConfig()
{
	IDirectSound8* ds;
	DWORD          speakerConfig;
	LPGUID         guid = NULL;

	DirectSoundEnumerate((LPDSENUMCALLBACK)DSEnumProc, (VOID*)&guid);

	if (DirectSoundCreate8(guid, &ds, NULL) != S_OK) {
		PrintLastError("DirectSoundCreate8()");
		return FALSE;
	}

	ds->Initialize(NULL);

	if (ds->GetSpeakerConfig(&speakerConfig) != S_OK) {
		PrintLastError("GetSpeakerConfig()");
		return FALSE;
	}

	if (ds) {
		ds->Release();
	}
	if (guid) {
		LocalFree(guid);
	}

	switch (DSSPEAKER_CONFIG(speakerConfig)) {
		case DSSPEAKER_STEREO:  currentChannelCount = 2; return TRUE;
		case DSSPEAKER_QUAD:    currentChannelCount = 4; return TRUE;
		case DSSPEAKER_5POINT1: currentChannelCount = 6; return TRUE;
		case DSSPEAKER_7POINT1: currentChannelCount = 8; return TRUE;
	}

	return FALSE;
}

BOOL setCurrentChannelConfig()
{
	IDirectSound8* ds;
	DWORD          speakerConfig;
	LPGUID         guid = NULL;

	DirectSoundEnumerate((LPDSENUMCALLBACK)DSEnumProc, (VOID*)&guid);

	if (DirectSoundCreate8(guid, &ds, NULL) != S_OK) {
		PrintLastError("DirectSoundCreate8()");
		return FALSE;
	}


	ds->Initialize(NULL);

	switch (currentChannelCount) {
		case 2: speakerConfig = DSSPEAKER_STEREO;  break;
		case 4: speakerConfig = DSSPEAKER_QUAD;    break;
		case 6: speakerConfig = DSSPEAKER_5POINT1; break;
		case 8: speakerConfig = DSSPEAKER_7POINT1; break;
	}

	if (ds->SetSpeakerConfig(speakerConfig) != S_OK) {
		PrintLastError("SetSpeakerConfig()");
		return FALSE;
	}

	if (ds) {
		ds->Release();
	}
	if (guid) {
		LocalFree(guid);
	}


	return FALSE;
}

BOOL getDeviceInfo(const GUID* category, CMIDEV* pDev)
{
	TCHAR  szServiceName[128];
	int    nIndex = 0;

	pDev->Info = SetupDiGetClassDevs(category, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
	if (pDev->Info == INVALID_HANDLE_VALUE) {
		PrintLastError("SetupDiGetClassDevs()");
		return FALSE;
	}

	pDev->InfoData.cbSize = sizeof(SP_DEVINFO_DATA);

	while (SetupDiEnumDeviceInfo(pDev->Info, nIndex, &(pDev->InfoData))) {
		if (!SetupDiGetDeviceRegistryProperty(pDev->Info, &(pDev->InfoData), SPDRP_SERVICE, NULL, (PBYTE)szServiceName, sizeof(szServiceName), NULL)) {
			PrintLastError("SetupDiGetDeviceRegistryProperty()");
			SetupDiDestroyDeviceInfoList(pDev->Info);
	    	pDev->Info = NULL;
			return FALSE;